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Sample records for near-face bed zone

  1. Zone heating for fluidized bed silane pyrolysis

    NASA Technical Reports Server (NTRS)

    Iya, Sridhar K. (Inventor)

    1987-01-01

    An improved heated fluidized bed reactor and method for the production of high purity polycrystalline silicon by silane pyrolysis wherein silicon seed particles are heated in an upper heating zone of the reactor and admixed with particles in a lower reaction zone, in which zone a silane-containing gas stream, having passed through a lower cooled gas distribution zone not conducive to silane pyrolysis, contacts the heated seed particles whereon the silane is heterogeneously reduced to silicon.

  2. Spectral zone selection methodology for pebble bed reactors

    SciTech Connect

    Ramatsemela Mphahlele; Abderrafi M. Ougouag; Kostadin N. Ivanov; Hans D. Gougar

    2011-01-01

    A methodology is developed for determining boundaries of spectral zones for pebble bed reactors. A spectral zone is defined as a region made up of a number of nodes whose characteristics are collectively similar and that are assigned the same few-group diffusion constants. The spectral zones are selected in such a manner that the difference (error) between the reference transport solution and the diffusion code solution takes a minimum value. This is achieved by choosing spectral zones through optimally minimizing this error. The objective function for the optimization algorithm is the total reaction rate error, which is defined as the sum of the leakage, absorption and fission reaction rates errors in each zone. The selection of these spectral zones is such that the core calculation results based on diffusion theory are within an acceptable tolerance as compared to a proper transport reference solution. Through this work, a consistent approach for identifying spectral zones that yield more accurate diffusion results is introduced.

  3. The elastic response of grounding zones over soft beds

    NASA Astrophysics Data System (ADS)

    Sayag, R.; Worster, M. G.

    2011-12-01

    The grounding line at the junction between a grounded sheet and a floating shelf is a free boundary that responds to processes in the ocean, the bed and the ice. Combining observations of the ice-surface elevation with scaling analysis, we show that the response of the ice near grounding lines can be dominated by elastic deformation. We use the theory of elastic sheet-shelf systems on elastic beds (Sayag and Worster, 2011, in press, Control ID 1191878) to relate between satellite observations of the break-in-slope and the Archimidean positions, to the elastic properties of ice and the grounding line position, and give theoretical bounds on these quantities in the limits of stiff and soft beds. Using satellite observations to estimate those bounds and comparing the theoretical predictions with laboratory measurements of the elastic modulus of ice, we find that a better agreement etween theory and observations is achieved assuming a stiff bed at some regions and a softer bed in others. In addition, we demonstrate that the grounding line position can vary substantially with respect to the interval between the break-in-slope and the Archimeadian positions, depending on the softness of the bed. Finally, we suggest an alternative explanation for the wedge structure of the bed near the grounding line reported in observational studies, through the deformation of soft beds under the action of the ice weight and buoyancy.

  4. Swash-zone velocity profiles and bed stress on a natural beach

    NASA Astrophysics Data System (ADS)

    Puleo, J. A.; Lanckriet, T.; Wang, P.

    2010-12-01

    The swash zone, where waves wash up and down the beach, is a difficult region of the nearshore to quantify velocity. Water depths in the swash zone can range from zero to over a meter and flows can be turbulent and bubble-laden. Swash flows are often assumed to be depth uniform partially because current meters typically cannot be placed closer than a few centimeters above the bed, although some previous field research has shown flow variability within elevations several centimeters above the bed. The swash-zone boundary layer, where flow momentum is transferred to the bed, must extend below elevations accessible to conventional current meters. Laser Doppler and video-based techniques have shown the shape of this boundary layer over smooth and rough impermeable and mobile granular beds in the laboratory, but to the author’s knowledge, the swash-zone boundary layer below 2-3 cm has never been measured on a natural beach. During August 16-19, 2010 a swash-zone study was conducted at several beaches in west-central Florida in an effort to measure the swash-zone boundary layer and bed shear stress. A new acoustic velocity profiling sensor, the Nortek Vectrino-II, has the capability to measure x, y and z velocity at 1mm increments over 30 bins at the finest setting. During the study 3 Vectrino-II’s were deployed with different profiling ranges in an effort to capture the boundary layer structure. Utilizing the velocity profile, bed stress is estimated using several different techniques including the “law of the wall” approach and nearbed velocity gradients. Preliminary results of the swash-zone boundary layer structure, friction velocity and bed stress as a function of swash phase will be discussed.

  5. The role of bed-parallel slip in the development of complex normal fault zones

    NASA Astrophysics Data System (ADS)

    Delogkos, Efstratios; Childs, Conrad; Manzocchi, Tom; Walsh, John J.; Pavlides, Spyros

    2017-04-01

    Normal faults exposed in Kardia lignite mine, Ptolemais Basin, NW Greece formed at the same time as bed-parallel slip-surfaces, so that while the normal faults grew they were intermittently offset by bed-parallel slip. Following offset by a bed-parallel slip-surface, further fault growth is accommodated by reactivation on one or both of the offset fault segments. Where one fault is reactivated the site of bed-parallel slip is a bypassed asperity. Where both faults are reactivated, they propagate past each other to form a volume between overlapping fault segments that displays many of the characteristics of relay zones, including elevated strains and transfer of displacement between segments. Unlike conventional relay zones, however, these structures contain either a repeated or a missing section of stratigraphy which has a thickness equal to the throw of the fault at the time of the bed-parallel slip event, and the displacement profiles along the relay-bounding fault segments have discrete steps at their intersections with bed-parallel slip-surfaces. With further increase in displacement, the overlapping fault segments connect to form a fault-bound lens. Conventional relay zones form during initial fault propagation, but with coeval bed-parallel slip, relay-like structures can form later in the growth of a fault. Geometrical restoration of cross-sections through selected faults shows that repeated bed-parallel slip events during fault growth can lead to complex internal fault zone structure that masks its origin. Bed-parallel slip, in this case, is attributed to flexural-slip arising from hanging-wall rollover associated with a basin-bounding fault outside the study area.

  6. A Survey of nearby, nearly face-on spiral galaxies

    NASA Astrophysics Data System (ADS)

    Garmire, Gordon

    2014-09-01

    This is a continuation of a survey of nearby, nearly face-on spiral galaxies. The main purpose is to search for evidence of collisions with small galaxies that show up in X-rays by the generation of hot shocked gas from the collision. Secondary objectives include study of the spatial distribution point sources in the galaxy and to detect evidence for a central massive blackhole.

  7. A Survey of nearby, nearly face-on spiral galaxies

    NASA Astrophysics Data System (ADS)

    Garmire, Gordon

    2014-09-01

    This is a continuation of a survey of nearby, nearly face-on spiral galaxies. The main purpose is to search for evidence of collisions with small galaxies that show up in X-rays by the generation of hot shocked gas from the collision. Secondary objectives include study of the spatial distribution point sources in the galaxy and to detect evidence for a central massive blackhole. These are alternate targets.

  8. Stable hydrogen production by methane steam reforming in a two zone fluidized bed reactor: Experimental assessment

    NASA Astrophysics Data System (ADS)

    Pérez-Moreno, L.; Soler, J.; Herguido, J.; Menéndez, M.

    2013-12-01

    The Two Zone Fluidized Bed Reactor concept is proposed for hydrogen production via the steam reforming of methane (SRM) including integrated catalyst regeneration. In order to study the effect of the contact mode, the oxidative SRM has been carried out over a Ni/Al2O3 catalyst using a fixed bed reactor (fBR), a conventional fluidized-bed reactor (FBR) and the proposed two-zone fluidized bed reactor (TZFBR). The technical feasibility of these reactors has been studied experimentally, investigating their performance (CH4 conversion, CO and H2 selectivity, and H2 global yield) and stability under different operating conditions. Coke generation in the process has been verified by several techniques. A stable performance was obtained in the TZFBR, where coke formation was counteracted with continuous catalyst regeneration. The viability of the TZFBR for carrying out this process with a valuable global yield to hydrogen is demonstrated.

  9. A preliminary report on a zone containing thick lignite beds, Denver Basin, Colorado

    USGS Publications Warehouse

    Soister, Paul E.

    1973-01-01

    A zone of lignite beds of Paleocene age in the Denver Formation (Upper Cretaceous and Paleocene) lies about 800-1,500 feet above the well-known and extensively mined coal beds of the Laramie Formation (Upper Cretaceous). The zone is a few hundred to as much as 500 feet thick. Where lignite beds lie within 1,000 feet of the surface, this zone underlies an area about 30 miles wide by about 75 miles long, stretching from just northeast of Denver to several miles south of Calhan. Fifteen mines were operated at various periods between 1874 and 1940 and probably produced a total of less than 100,000 tons of lignite, mostly for local use. From 1874 to 1974, several geologists have reported on this lignite zone or the enclosing beds, but no detailed reports have been written except for one by this writer. Drill holes are the main source of geologic data, owing to poor exposure. There are generally about 3 to 6 lignite beds, and they are mostly about 15 or 20 to a few tens of feet apart. Most or all beds typically contain numerous non-coal partings from a fraction of an inch to several inches thick, so that thickness of lignite beds should be stated as gross thickness and as net lignite thickness; net lignite thickness is generally from 70 to 90 percent of gross thickness. Many partings are composed of kaolin, but others are composed of other clay minerals, siltstone, and sandstone. The lignite beds range generally from 1 or 2 to several feet thick, and some are as much as 10-25 feet thick; the thickest known bed has a maximum thickness of 54.5 feet, with a net lignite thickness of 40 feet. Most lignite beds seem to have fair lateral continuity, and at least some beds are several miles in extent. The thickest known lignite bed was traced for at least 18 miles, from northwest to southeast of Watkins. The lignite is brownish-black to black, weathers, checks, and disintegrates rapidly, and even in drill cores from a few hundred feet in depth the lignite is easily broken by

  10. Effect of Local Slope on Bed Load Transport in the Surf Zone

    NASA Astrophysics Data System (ADS)

    Calantoni, J.; Drake, T. G.

    2001-12-01

    Energetics models for sediment transport in the surf zone do not account for gravity-induced transport that is not collinear with fluid motion. These models only allow for a single value of local bed slope to be specified in the cross-shore direction. While in theory, energetics models have predictive capability for both cross-shore and long-shore sediment transport they are typically only used to predict cross-shore transport in practice. A suite of three-dimensional discrete particle computer simulations of bed load transport was performed for a variety of flow conditions and a range of bed slopes (both parallel and perpendicular to the flow) common to the surf zone. In the case where the bed slope is perpendicular to the fluid motion, for example, cross-shore wave-generated oscillatory flow over a bed locally sloping long shore, the long shore component of the bed load transport rate is linearly related to the net cross-shore component for slopes up to 10 degrees. At higher long shore slopes, the long shore transport rate grows nonlinearly with the slope and can exceed the cross-shore rate at slopes approaching the angle of repose. Such transport has important implications for the modeling of smaller scale, three-dimensional bed features (from megaripples to rip channels). Previous modifications to the Bagnold/Bowen/Bailard energetics-based bed load transport formulae can be expanded to include the effects of an arbitrary local bed slope (by allowing for the input of both cross-shore and long shore local slopes) using a vector formulation that can be easily tested with velocity and bathymetry measurements commonly obtained in field experiments. Research supported by the Coastal Dynamics Program of the Office of Naval Research and the National Ocean Partnership Program. >http://www4.ncsu.edu/unity/users/j/joe/public/

  11. Coal resources of selected coal beds and zones in the Northern and Central Appalachian Basin

    USGS Publications Warehouse

    Ruppert, Leslie; Tewalt, Susan; Bragg, Linda

    2002-01-01

    The Appalachian Basin is one of the most important coal-producing regions in the world. Bituminous coal has been mined in the basin for the last three centuries, and the cumulative production is estimated at 34.5 billion short tons. Annual production in 1998 was about 452 million short tons; the basin's production is mostly in the northern (32 percent) and central (63 percent) coal regions. The coal is used primarily within the Eastern United States for electric power generation, but some of it is suitable for metallurgical uses. The U.S. Geological Survey (USGS) is completing a National Coal Resource Assessment of five coal-producing regions of the United States, including the Appalachian Basin. The USGS, in cooperation with the State geological surveys of Kentucky, Maryland, Ohio, Pennsylvania, Virginia, and West Virginia, has completed a digital coal resource assessment of five of the top-producing coal beds and coal zones in the northern and central Appalachian Basin coal regions -- the Pittsburgh coal bed, the Upper Freeport coal bed, the Fire Clay and Pond Creek coal zones, and the Pocahontas No. 3 coal bed. Of the 93 billion short tons of original coal in these units, about 66 billion short tons remain.

  12. Automated spectral zones selection methodology for diffusion theory data preparation for pebble bed reactor analysis

    NASA Astrophysics Data System (ADS)

    Mphahlele, Ramatsemela

    A methodology is developed for the determination of the optimum spectral zones in Pebble Bed Reactors (PBR). In this work a spectral zone is defined as a zone made up of a number of nodes whose characteristics are collectively similar and that are assigned the same few-group diffusion constants. In other words the spectral zones are the regions over which the few-group diffusion parameters are generated. The identification of spectral boundaries is treated as an optimization problem. It is solved by systematically and simultaneously repositioning all zone boundaries to achieve the global minimum error between the reference transport solution (MCNP) and the diffusion code solution (NEM). The objective function for the optimization algorithm is the total reaction rate error, which is defined as the sum of the leakage, absorption and fission reaction rates error in each zone. An iterative determination of group-dependent bucklings is incorporated into the methodology to properly account for spectral effects of neighboring zones. A preferred energy group structure has also been chosen. This optimization approach with the reference transport solution has proved to be accurate and consistent, however the computational effort required to complete the optimization process is significant. Thus a more practical methodology is also developed for the determination of the spectral zones in PBRs. The reactor physics characteristics of the spectral zones have been studied to understand the nature of the spectral zone boundaries. The practical tool involves the use of spectral indices based on few-group diffusion theory whole core calculations. With this methodology, there is no need to first have a reference transport solution. It is shown that the diffusion-theory coarse group fluxes and the effective multiplication factor computed using zones based on the practical index agrees within a narrow tolerance with those of the reference approach. Therefore the "practical" index

  13. Evaluation of center-cut separations applying simulated moving bed chromatography with 8 zones.

    PubMed

    Santos da Silva, Francisco Vitor; Seidel-Morgenstern, Andreas

    2016-07-22

    Different multi-column options to perform continuous chromatographic separations of ternary mixtures have been proposed in order to overcome limitations of batch chromatography. One attractive option is given by simulated moving bed chromatography (SMB) with 8 zones, a process that offers uninterrupted production, and, potentially, improved economy. As in other established ternary separation processes, the separation sequence is crucial for the performance of the process. This problem is addressed here by computing and comparing optimal performances of the two possibilities assuming linear adsorption isotherms. The conclusions are presented in a decision tree which can be used to guide the selection of system configuration and operation. Copyright © 2016 Elsevier B.V. All rights reserved.

  14. A Simplified Model for the Behavior of Large Biomass Particles in the Splashing Zone of a Bubbling Bed

    NASA Astrophysics Data System (ADS)

    Brink, Anders; Karlström, Oskar; Hupa, Mikko

    A model for the behavior of biomass particles in the splashing zone of a bubbling bed has been developed. The model is intended for use in CFD studies of bubbling beds, where it provides a way of modeling particle dispersion in the splashing zone. In the model, particles landing on the bed surface are assumed to reenter the splashing zone. Two initial velocities are used for the reentering particles: one represents particles landing on bursting bubbles and one for the emulsion phase. The fraction of the bed consisting of bubbles is calculated using standard expressions from the literature. The re-entering velocity of fuel particles from the bubbles is set such that the flight trajectory reaches the typical height of the splashing zone. The velocity from the emulsion phase is assumed to be of the order of the fluidization velocity. In both cases the initial direction of the trajectory is allowed to take random values. Using these simple assumptions an approximation of the logarithmic material distribution in the splashing zone is achieved.

  15. Delineating a shallow fault zone and dipping bed rock strata using multichannal analysis of surface waves with a land streamer

    USGS Publications Warehouse

    Ivanov, J.; Miller, R.D.; Lacombe, P.; Johnson, C.D.; Lane, J.W.

    2006-01-01

    The multichannel analysis of surface waves (MASW) seismic method was used to delineate a fault zone and gently dipping sedimentary bedrock at a site overlain by several meters of regolith. Seismic data were collected rapidly and inexpensively using a towed 30-channel land streamer and a rubberband-accelerated weight-drop seismic source. Data processed using the MASW method imaged the subsurface to a depth of about 20 m and allowed detection of the overburden, gross bedding features, and fault zone. The fault zone was characterized by a lower shear-wave velocity (Vs) than the competent bedrock, consistent with a large-scale fault, secondary fractures, and in-situ weathering. The MASW 2D Vs section was further interpreted to identify dipping beds consistent with local geologic mapping. Mapping of shallow-fault zones and dipping sedimentary rock substantially extends the applications of the MASW method. ?? 2006 Society of Exploration Geophysicists.

  16. Tiny Is Mighty: Seagrass Beds Have a Large Role in the Export of Organic Material in the Tropical Coastal Zone

    PubMed Central

    Gillis, Lucy G.; Ziegler, Alan D.; van Oevelen, Dick; Cathalot, Cecile; Herman, Peter M. J.; Wolters, Jan W.; Bouma, Tjeerd J.

    2014-01-01

    Ecosystems in the tropical coastal zone exchange particulate organic matter (POM) with adjacent systems, but differences in this function among ecosystems remain poorly quantified. Seagrass beds are often a relatively small section of this coastal zone, but have a potentially much larger ecological influence than suggested by their surface area. Using stable isotopes as tracers of oceanic, terrestrial, mangrove and seagrass sources, we investigated the origin of particulate organic matter in nine mangrove bays around the island of Phuket (Thailand). We used a linear mixing model based on bulk organic carbon, total nitrogen and δ13C and δ15N and found that oceanic sources dominated suspended particulate organic matter samples along the mangrove-seagrass-ocean gradient. Sediment trap samples showed contributions from four sources oceanic, mangrove forest/terrestrial and seagrass beds where oceanic had the strongest contribution and seagrass beds the smallest. Based on ecosystem area, however, the contribution of suspended particulate organic matter derived from seagrass beds was disproportionally high, relative to the entire area occupied by mangrove forests, the catchment area (terrestrial) and seagrass beds. The contribution from mangrove forests was approximately equal to their surface area, whereas terrestrial contributions to suspended organic matter under contributed compared to their relative catchment area. Interestingly, mangrove forest contribution at 0 m on the transects showed a positive relationship with the exposed frontal width of the mangrove, indicating that mangrove forest exposure to hydrodynamic energy may be a controlling factor in mangrove outwelling. However we found no relationship between seagrass bed contribution and any physical factors, which we measured. Our results indicate that although seagrass beds occupy a relatively small area of the coastal zone, their role in the export of organic matter is disproportional and should be

  17. Tiny is mighty: seagrass beds have a large role in the export of organic material in the tropical coastal zone.

    PubMed

    Gillis, Lucy G; Ziegler, Alan D; van Oevelen, Dick; Cathalot, Cecile; Herman, Peter M J; Wolters, Jan W; Bouma, Tjeerd J

    2014-01-01

    Ecosystems in the tropical coastal zone exchange particulate organic matter (POM) with adjacent systems, but differences in this function among ecosystems remain poorly quantified. Seagrass beds are often a relatively small section of this coastal zone, but have a potentially much larger ecological influence than suggested by their surface area. Using stable isotopes as tracers of oceanic, terrestrial, mangrove and seagrass sources, we investigated the origin of particulate organic matter in nine mangrove bays around the island of Phuket (Thailand). We used a linear mixing model based on bulk organic carbon, total nitrogen and δ13C and δ15N and found that oceanic sources dominated suspended particulate organic matter samples along the mangrove-seagrass-ocean gradient. Sediment trap samples showed contributions from four sources oceanic, mangrove forest/terrestrial and seagrass beds where oceanic had the strongest contribution and seagrass beds the smallest. Based on ecosystem area, however, the contribution of suspended particulate organic matter derived from seagrass beds was disproportionally high, relative to the entire area occupied by mangrove forests, the catchment area (terrestrial) and seagrass beds. The contribution from mangrove forests was approximately equal to their surface area, whereas terrestrial contributions to suspended organic matter under contributed compared to their relative catchment area. Interestingly, mangrove forest contribution at 0 m on the transects showed a positive relationship with the exposed frontal width of the mangrove, indicating that mangrove forest exposure to hydrodynamic energy may be a controlling factor in mangrove outwelling. However we found no relationship between seagrass bed contribution and any physical factors, which we measured. Our results indicate that although seagrass beds occupy a relatively small area of the coastal zone, their role in the export of organic matter is disproportional and should be

  18. Vertical structure of near-bed cross-shore flow velocities in the swash zone of a dissipative beach

    NASA Astrophysics Data System (ADS)

    Inch, Kris; Masselink, Gerd; Puleo, Jack A.; Russell, Paul; Conley, Daniel C.

    2015-06-01

    Cross-shore velocity profiles are measured at 0.001 m vertical resolution and at 100 Hz over the lower 0.02-0.07 m of the water column in the mid swash zone on a dissipative, macrotidal beach. Swash motion is predominantly at infragravity frequencies and forced by significant wave heights exceeding 1.5 m and peak wave periods over 15 s. Observations of long duration (> 14 s) swashes during two rising tides are used to quantify the vertical structure of cross-shore flow velocities and estimate corresponding bed shear stress and friction coefficients. Analysis is performed on an individual swash event to an elevation of 0.07 m and an ensemble event made up of 24 individual swash events to an elevation of 0.02 m. Cross-shore velocities exceed 2 m s-1 and are of a similar magnitude during both the uprush and the backwash. Changes in velocity with elevation indicate that the swash zone boundary layer extends to 0.07 m during the strongest flows and is well-represented by the logarithmic model applied to this elevation, except near flow reversal. Maximum bed shear stresses estimated using the logarithmic model are 22 N m-2 and 10 N m-2 for the individual event and ensemble event respectively and mean values are larger during the backwash than the uprush. Mean friction coefficients estimated from equating the logarithmic model and the quadratic drag law are 0.018 and 0.019 for the individual event and ensemble event respectively. Bed shear stress may be underestimated if the logarithmic model is fit to a velocity profile that is only part boundary layer, emphasising the need for high resolution velocity profiles close to the bed for accurate bed shear stress predictions in the swash zone.

  19. Identifying palaeo-ice-stream tributaries on hard beds: Mapping glacial bedforms and erosion zones in NW Scotland

    NASA Astrophysics Data System (ADS)

    Bradwell, Tom

    2013-11-01

    Ice streams are fed by tributaries that can extend deep into the heart of ice sheets. These tributaries are born at onset zones - the abrupt transitions from slow sheet flow to fast streaming flow that often occur at significant topographic steps on hard beds (bedrock-dominated beds). For this reason, tributary onset zones leave only a subtle erosional geomorphic signature in the landscape record that is rarely studied. This paper examines, in detail, the geomorphic signature of ice-sheet flow on a hard bed at the head of a palaeo-ice stream. We use field survey techniques to map glacial bedforms within an ~ 200-km2 area of hard crystalline bedrock in a landscape of ‘areal scour’ around Loch Laxford in NW Scotland. The bedrock bedforms range from plastically moulded (p-forms) and wholly abraded forms, to stoss-lee forms and plucked surfaces all on an outcrop scale (1-100 m). We devise a five-zone classification system to map (in a GIS) the presence, absence, and abundance of glacial erosional forms within 619 (500-m square) grid cells. We go on to use these erosional bedform zones, along with known glaciological relationships to interpret the spatial and altitudinal pattern of palaeo-ice sheet processes and glacier dynamics in this part of NW Scotland. Our interpretation highlights the strong vertical thermal zonation on mountains, and the spatial variations in ice rheology (softness), ice temperature and, by inference, ice velocity in troughs - intimately associated with the onset of ice streaming in tributaries. Consequently, we define the Laxfjord palaeo-ice-stream tributary - a feeder to the Minch palaeo-ice stream in NW Scotland. Finally, we suggest that this new mapping approach could be performed in other deglaciated hard-bed terrain to examine, more widely, the subtle erosional signatures preserved in areas traditionally thought to represent ice sheet ‘areal scour’.

  20. Effects of normobaric hypoxic bed rest on the thermal comfort zone.

    PubMed

    Ciuha, Ursa; Eiken, Ola; Mekjavic, Igor B

    2015-01-01

    Future Lunar and Mars habitats will maintain a hypobaric hypoxic environment to minimise the risk of decompression sickness during the preparation for extra-vehicular activity. This study was part of a larger study investigating the separate and combined effects of inactivity associated with reduced gravity and hypoxia, on the cardiovascular, musculoskeletal, neurohumoural, and thermoregulatory systems. Eleven healthy normothermic young male subjects participated in three trials conducted on separate occasions: (1) Normobaric hypoxic ambulatory confinement, (2) Normobaric hypoxic bedrest and (3) Normobaric normoxic bedrest. Normobaric hypoxia was achieved by reduction of the oxygen fraction in the air (FiO2 = 0.141 ± 0.004) within the facility, while the effects of reduced gravity were simulated by confining the subjects to a horizontal position in bed, with all daily routines performed in this position for 21 days. The present study investigated the effect of the interventions on behavioural temperature regulation. The characteristics of the thermal comfort zone (TCZ) were assessed by a water-perfused suit, with the subjects instructed to regulate the sinusoidally varying temperature of the suit within a range considered as thermally comfortable. Measurements were performed 5 days prior to the intervention (D-5), and on days 10 (D10) and 20 (D20) of the intervention. no statistically significant differences were found in any of the characteristics of the TCZ between the interventions (HAMB, HBR and NBR), or between different measurement days (D-5, D10, D20) within each intervention. rectal temperature remained stable, whereas skin temperature (Tsk) increased during all interventions throughout the one hour trial. no difference in Tsk between D-5, D10 and D20, and between HAMB, HBR and NBR were revealed. subjects perceived the regulated temperature as thermally comfortable, and neutral or warm. we conclude that regulation of thermal comfort is not compromised by

  1. Observations of wave-induced pore pressure gradients and bed level response on a surf zone sandbar

    NASA Astrophysics Data System (ADS)

    Anderson, Dylan; Cox, Dan; Mieras, Ryan; Puleo, Jack A.; Hsu, Tian-Jian

    2017-06-01

    Horizontal and vertical pressure gradients may be important physical mechanisms contributing to onshore sediment transport beneath steep, near-breaking waves in the surf zone. A barred beach was constructed in a large-scale laboratory wave flume with a fixed profile containing a mobile sediment layer on the crest of the sandbar. Horizontal and vertical pore pressure gradients were obtained by finite differences of measurements from an array of pressure transducers buried within the upper several centimeters of the bed. Colocated observations of erosion depth were made during asymmetric wave trials with wave heights between 0.10 and 0.98 m, consistently resulting in onshore sheet flow sediment transport. The pore pressure gradient vector within the bed exhibited temporal rotations during each wave cycle, directed predominantly upward under the trough and then rapidly rotating onshore and downward as the wavefront passed. The magnitude of the pore pressure gradient during each phase of rotation was correlated with local wave steepness and relative depth. Momentary bed failures as deep as 20 grain diameters were coincident with sharp increases in the onshore-directed pore pressure gradients, but occurred at horizontal pressure gradients less than theoretical critical values for initiation of the motion for compact beds. An expression combining the effects of both horizontal and vertical pore pressure gradients with bed shear stress and soil stability is used to determine that failure of the bed is initiated at nonnegligible values of both forces.Plain Language SummaryThe pressure gradient present within the seabed beneath breaking waves may be an important physical mechanism transporting sediment. A large-scale laboratory was used to replicate realistic surfzone conditions in controlled tests, allowing for horizontal and vertical pressure gradient magnitudes and the resulting sediment <span class="hlt">bed</span> response to be observed with</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/24581869','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/24581869"><span>A pseudo three-<span class="hlt">zone</span> simulated moving <span class="hlt">bed</span> with solvent gradient for quaternary separations.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Jiang, Chongwen; Huang, Fengmei; Wei, Feng</p> <p>2014-03-21</p> <p>In a SMB with solvent gradient, as the eluotropic strength of the liquid in <span class="hlt">zone</span> II (between the extract-port and feed-port) is higher than that in <span class="hlt">zone</span> III (between the feed-port and the raffinate-port), the solute can move forward in <span class="hlt">zone</span> II but backward in <span class="hlt">zone</span> III to be trapped in the two <span class="hlt">zones</span> consequently. On this basis, a pseudo-SMB was proposed to separate two medium retained solutes (B1 and B2) from a quaternary mixture by selectively trapping the two solutes. Once the columns in <span class="hlt">zones</span> II and III are saturated with the target solutes, the solvent dissolving the feed is introduced at the feed-port to remove the least retained solute (A) from the raffinate-port and the most retained solute (C) from the extract-port. The two target components trapped in <span class="hlt">zones</span> II and III are purified accordingly. At the same time, solute B1 would distribute in the columns of <span class="hlt">zone</span> III whereas solute B2 spread in the columns of <span class="hlt">zone</span> II if solute B2 had a stronger retention than solute B1. Thereby, the two medium retained solutes B1 and B2 could be recovered separately from the columns in <span class="hlt">zones</span> II and III. This scheme was validated by the successful separation of capsaicin (B1) and dihydrocapsaicin (B2) from a crude capsaicinoids.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/sir/2010/5152/','USGSPUBS'); return false;" href="https://pubs.usgs.gov/sir/2010/5152/"><span>Correlation chart of Pennsylvanian rocks in Alabama, Tennessee, Kentucky, Virginia, West Virginia, Ohio, Maryland, and Pennsylvania showing approximate position of coal <span class="hlt">beds</span>, coal <span class="hlt">zones</span>, and key stratigraphic units</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Ruppert, Leslie F.; Trippi, Michael H.; Slucher, Ernie R.</p> <p>2010-01-01</p> <p>This report contains a simplified provisional correlation chart that was compiled from both published and unpublished data in order to fill a need to visualize the currently accepted stratigraphic relations between Appalachian basin formations, coal <span class="hlt">beds</span> and coal <span class="hlt">zones</span>, and key stratigraphic units in the northern, central, and southern Appalachian basin coal regions of Alabama, Tennessee, Kentucky, Virginia, West Virginia, Ohio, Maryland, and Pennsylvania. Appalachian basin coal <span class="hlt">beds</span> and coal <span class="hlt">zones</span> were deposited in a variety of geologic settings throughout the Lower, Middle, and Upper Pennsylvanian and Pennsylvanian formations were defined on the presence or absence of economic coal <span class="hlt">beds</span> and coarse-grained sandstones that often are local or regionally discontinuous. The correlation chart illustrates how stratigraphic units (especially coal <span class="hlt">beds</span> and coal <span class="hlt">zones</span>) and their boundaries can differ between States and regions.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.gpo.gov/fdsys/pkg/FR-2010-05-21/pdf/2010-12287.pdf','FEDREG'); return false;" href="https://www.gpo.gov/fdsys/pkg/FR-2010-05-21/pdf/2010-12287.pdf"><span>75 FR 28554 - Foreign-Trade <span class="hlt">Zone</span> 50 Long Beach, California, Application for Subzone, Louisville <span class="hlt">Bedding</span> Company...</span></a></p> <p><a target="_blank" href="http://www.gpo.gov/fdsys/browse/collection.action?collectionCode=FR">Federal Register 2010, 2011, 2012, 2013, 2014</a></p> <p></p> <p>2010-05-21</p> <p>... finished household <span class="hlt">bedding</span> products would be entered for consumption from the proposed subzone classified..., Louisville <span class="hlt">Bedding</span> Company (Household <span class="hlt">Bedding</span> Products), Ontario, California An application has been... to manufacture household <span class="hlt">bedding</span> products, including mattress pads and pillows (up to 10 million...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://pubs.er.usgs.gov/publication/60690','USGSPUBS'); return false;" href="http://pubs.er.usgs.gov/publication/60690"><span>Revised correlation chart of coal <span class="hlt">beds</span>, coal <span class="hlt">zones</span>, and key stratigraphic units in the Pennsylvanian rocks of eastern Kentucky</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Rice, Charles L.; Hiett, John K.</p> <p>1994-01-01</p> <p>This report revises Miscellaneous Field Studies Map MF-1188 (Rice and Smith, 1980). Major revisions to the original correlation chart include formal naming of key marine units in Kentucky and replacement of informally named marine units incorrectly projected into Kentucky from adjacent states. Also included in the report is the proper correlation of some regionally recognized coal <span class="hlt">bed</span> names that have been incorrectly projected into Kentucky, particularly from Ohio and West Virginia. Besides these additions and corrections, minor changes have been made to the correlation chart, all of which are discussed below in detail. The Pennsylvania rocks of the eastern Kentucky coal field underlie an area of about 27,000 square kilometers (see index map). Largely because of the size and stratigra[hic complexity of the area, Huddle and others (1963, p. 31) divided the coal field into six coal-reserve districts. District boundaries utilize state and county line as well as geologic features, drainage areas, and coal producing areas. Their division is followed herein because, in general, each of the districts has a characteristic stratigraphic nomenclature, particularly with regard to coal <span class="hlt">bed</span> names. The six districts are the Princess, Licking River, Big Sandy, Hazard, Southwestern, and Upper Cumberland River district is divided into the Middlesboro and Harlan subdistricts. The correlation chart lists most of the stratigraphic units of Pennsylvanian age used in eastern Kentucky, and is concerned principally with coal <span class="hlt">bed</span> names used in publications since about 1950, especially all of the names of coal <span class="hlt">beds</span> for which resources and reserves have been calculated. Coal constitutes only a small percentage of the total Pennsylvanian-rock sequence, but is present in as many as 26 major coal <span class="hlt">zones</span> that have been prospected and mined extensively in all parts of the coal field since the early 1900's. Coal names listed in this chart represent coal <span class="hlt">beds</span> that have been mined commercially or</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/27260199','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/27260199"><span>Center-cut separation of intermediately adsorbing target component by 8-<span class="hlt">zone</span> simulated moving <span class="hlt">bed</span> chromatography with internal recycle.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Kiwala, Dawid; Mendrella, Jadwiga; Antos, Dorota; Seidel-Morgenstern, Andreas</p> <p>2016-07-01</p> <p>An 8-<span class="hlt">zone</span> simulated moving <span class="hlt">bed</span> chromatography with internal recycle (8ZSMB-IR) has been designed for center-cut separation, that is, for isolating an intermediately adsorbed component out of a multicomponent mixture. The system consists of two integrated subunits and operates in a fully continuous manner. In the first subunit the feed mixture is split into two fractions containing either a single component or a binary mixture. The binary mixture is recycled through the internal raffinate or extract port into the second subunit, where the target product is isolated. Additionally, the solvent is also recycled internally. For a case study, the separation of a ternary mixture of cycloketones as a model system under weakly non-linear isotherm conditions has been investigated. A few novel configurations of the 8ZSMB-IR unit including the arrangement of the internal recycle of extract, raffinate and solvent streams between two subunits have been examined with respect to various performance indicators for the process realization. The unit performed best with the developed configuration when the internal raffinate stream was recycled and the solvent recycling loop was closed between the last and the first <span class="hlt">zone</span> of the first subunit. That configuration has further been analyzed experimentally and numerically. On the basis of the results a strategy for determining reliable operating conditions for the 8ZSMB-IR process has been developed. The procedure exploited a model of the process dynamics, which was implemented to refine the isotherm coefficients and to quantify the mixing effect of the liquid stream inside the recycling loops. The upgraded model with the adjusted parameters has been validated based on experimental data and successfully applied for optimizing the operating conditions of the separation. Copyright © 2016 Elsevier B.V. All rights reserved.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2010RAA....10.1223G','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2010RAA....10.1223G"><span>Multiwavelength study of <span class="hlt">nearly</span> <span class="hlt">face</span>-on low surface brightness disk galaxies</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Gao, Dong; Liang, Yan-Chun; Liu, Shun-Fang; Zhong, Guo-Hu; Chen, Xiao-Yan; Yang, Yan-Bin; Hammer, Francois; Yang, Guo-Chao; Deng, Li-Cai; Hu, Jing-Yao</p> <p>2010-12-01</p> <p>We study the ages of a large sample (1802) of <span class="hlt">nearly</span> <span class="hlt">face</span>-on disk low surface brightness galaxies (LSBGs) using the evolutionary population synthesis (EPS) model PEGASE with an exponentially decreasing star formation rate to fit their multiwavelength spectral energy distributions (SEDs) from far-ultraviolet (FUV) to near-infrared (NIR). The derived ages of LSBGs are 1-5 Gyr for most of the sample no matter if constant or varying dust extinction is adopted, which are similar to most of the previous studies on smaller samples. This means that these LSBGs formed the majority of their stars quite recently. However, a small part of the sample (~2%-3%) has larger ages of 5-8 Gyr, meaning their major star forming process may have occurred earlier. At the same time, a large sample (5886) of high surface brightness galaxies (HSBGs) are selected and studied using the same method for comparisons. The derived ages are 1-5 Gyr for most of the sample (97%) as well. These results probably mean that these LSBGs have not much different star formation histories from their HSBGs counterparts. However, we should notice that the HSBGs are generally about 0.2 Gyr younger, which could mean that the HSBGs may have undergone more recent star forming activities than the LSBGs.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2010AGUFM.H21C1068U','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2010AGUFM.H21C1068U"><span>Application of in-situ passive samplers for the investigation of the impacts of vegetated river <span class="hlt">beds</span> on mineral N concentration gradients in the hyporheic <span class="hlt">zone</span></span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Ullah, S.; Zhang, H.; Heathwaite, L.; Lansdown, K.; Heppell, K.; Binley, A.; Trimmer, M.; Keenan, P.</p> <p>2010-12-01</p> <p>Conventional pore water sampling techniques have only a limitated capability to provide fine scale (cm or mm) depth resolution of chemical species associated with a ‘hotspot’ or a ‘hot event' in riverine hyporheic <span class="hlt">zones</span>. To overcome this limitation, in-situ passive samplers (diffusive equilibrium in thin films-DET) were deployed in hyporheic sediments (0-30 cm depth) both under vegetated <span class="hlt">beds</span> (dominated by Phragmites, spp.) and non-vegetated <span class="hlt">beds</span> of a groundwater-fed river in Cumbria, UK. The riverbed environment consisted of coarse gravels and sandstone, requiring development of a new methodology for inserting the DET probes. The objectives were two-fold; 1) to explore the feasibility of DET deployment in hyporheic sediments dominated by gravels, and 2) to assess the impacts of vegetated <span class="hlt">beds</span> on mineral N concentration gradients (cm scale resolution) to those under non-vegetated <span class="hlt">beds</span> of the riverbed. The challenge of deploying DET in gravel <span class="hlt">bed</span> sediments was met. Resulting information on fine scale gradients of mineral N and other redox sensitive species can improve our understanding of the dynamics of hyporheic mineral N species. According to the results, hyporheic sediments under vegetation exhibited significantly lower nitrate concentration gradients compared to non-vegetated hyporheic sediments. A dense piezometer network installed at the site showed that both locations possessed an upwelling potential at the time of DET deployment, and the amount of dissolved organic C was high in the hyporheic under reeds relative to the non-vegetated <span class="hlt">zones</span>. These preliminary results suggest that vegetated <span class="hlt">beds</span> in rivers could be effective in removing NO3 through denitrification and plant uptake besides rendering other ecosystem services such as habitat provision.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/896329','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/896329"><span>Effects of Fluctuating River flow on Groundwater/Surface Water Mixing in the Hyporheic <span class="hlt">Zone</span> of a Regulated, Large Cobble <span class="hlt">Bed</span> River</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Arntzen, Evan V.; Geist, David R.; Dresel, P. Evan</p> <p>2006-10-31</p> <p>Physicochemical relationships in the boundary <span class="hlt">zone</span> between groundwater and surface water (i.e., the hyporheic <span class="hlt">zone</span>) are controlled by surface water hydrology and the hydrogeologic properties of the riverbed. We studied how sediment permeability and river discharge altered the vertical hydraulic gradient (VHG) and water quality of the hyporheic <span class="hlt">zone</span> within the Hanford Reach of the Columbia River. The Columbia River at Hanford is a large, cobble-<span class="hlt">bed</span> river where water level fluctuates up to 2 m daily because of hydropower generation. Concomitant with recording river stage, continuous readings were made of water temperature, specific conductance, dissolved oxygen, and water level of the hyporheic <span class="hlt">zone</span>. The water level data were used to calculate VHG between the river and hyporheic <span class="hlt">zone</span>. Sediment permeability was estimated using slug tests conducted in piezometers installed into the river <span class="hlt">bed</span>. The response of water quality measurements and VHG to surface water fluctuations varied widely among study sites, ranging from no apparent response to co-variance with river discharge. At some sites, a hysteretic relationship between river discharge and VHG was indicated by a time lag in the response of VHG to changes in river stage. The magnitude, rate of change, and hysteresis of the VHG response varied the most at the least permeable location (hydraulic conductivity (K) = 2.9 x 10-4 cms-1), and the least at the most permeable location (K=8.0 x 10-3 cms-1). Our study provides empirical evidence that sediment properties and river discharge both control the water quality of the hyporheic <span class="hlt">zone</span>. Regulated rivers, like the Columbia River at Hanford, that undergo large, frequent discharge fluctuations represent an ideal environment to study hydrogeologic processes over relatively short time scales (i.e., days to weeks) that would require much longer periods of time to evaluate (i.e., months to years) in un-regulated systems.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/22333683','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/22333683"><span>Strategy of rearranging the port locations in a three-<span class="hlt">zone</span> simulated moving <span class="hlt">bed</span> chromatography for binary separation with linear isotherms.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Mun, Sungyong</p> <p>2012-03-23</p> <p>A three-<span class="hlt">zone</span> simulated moving <span class="hlt">bed</span> (SMB) chromatographic process for binary separation, which has been developed previously, was reported to have four ports that are located in the order of desorbent, extract, feed, and raffinate. To make a substantial improvement in the performance of such a three-<span class="hlt">zone</span> SMB process, the strategy of rearranging the port locations was proposed in this study within a linear isotherm region. The core of the proposed strategy is to transfer the location of the extract port from its classical position (i.e., the position between <span class="hlt">zones</span> I and II) to the <span class="hlt">zone</span> III outlet. Simultaneously, the feed and raffinate ports are transferred backwards by one <span class="hlt">zone</span>. Thus, the order of the proposed port locations follows the order of desorbent, feed, raffinate, and extract. The results from both equilibrium-theory analysis and detailed simulation proved that the proposed strategy was highly effective in improving the product purities or throughput of a three-<span class="hlt">zone</span> SMB process. Furthermore, it was found that such advantage of the proposed strategy became greater as the difference between the adsorption affinities of the feed components was larger.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=4021934','PMC'); return false;" href="https://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=4021934"><span>Pd-Ag Membrane Coupled to a Two-<span class="hlt">Zone</span> Fluidized <span class="hlt">Bed</span> Reactor (TZFBR) for Propane Dehydrogenation on a Pt-Sn/MgAl2O4 Catalyst</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pmc">PubMed Central</a></p> <p>Medrano, José-Antonio; Julián, Ignacio; Herguido, Javier; Menéndez, Miguel</p> <p>2013-01-01</p> <p>Several reactor configurations have been tested for catalytic propane dehydrogenation employing Pt-Sn/MgAl2O4 as a catalyst. Pd-Ag alloy membranes coupled to the multifunctional Two-<span class="hlt">Zone</span> Fluidized <span class="hlt">Bed</span> Reactor (TZFBR) provide an improvement in propane conversion by hydrogen removal from the reaction <span class="hlt">bed</span> through the inorganic membrane in addition to in situ catalyst regeneration. Twofold process intensification is thereby achieved when compared to the use of traditional fluidized <span class="hlt">bed</span> reactors (FBR), where coke formation and thermodynamic equilibrium represent important process limitations. Experiments were carried out at 500–575 °C and with catalyst mass to molar flow of fed propane ratios between 15.1 and 35.2 g min mmol−1, employing three different reactor configurations: FBR, TZFBR and TZFBR + Membrane (TZFBR + MB). The results in the FBR showed catalyst deactivation, which was faster at high temperatures. In contrast, by employing the TZFBR with the optimum regenerative agent flow (diluted oxygen), the process activity was sustained throughout the time on stream. The TZFBR + MB showed promising results in catalytic propane dehydrogenation, displacing the reaction towards higher propylene production and giving the best results among the different reactor configurations studied. Furthermore, the results obtained in this study were better than those reported on conventional reactors. PMID:24958620</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/24958620','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/24958620"><span>Pd-Ag Membrane Coupled to a Two-<span class="hlt">Zone</span> Fluidized <span class="hlt">Bed</span> Reactor (TZFBR) for Propane Dehydrogenation on a Pt-Sn/MgAl2O4 Catalyst.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Medrano, José-Antonio; Julián, Ignacio; Herguido, Javier; Menéndez, Miguel</p> <p>2013-05-14</p> <p>Several reactor configurations have been tested for catalytic propane dehydrogenation employing Pt-Sn/MgAl2O4 as a catalyst. Pd-Ag alloy membranes coupled to the multifunctional Two-<span class="hlt">Zone</span> Fluidized <span class="hlt">Bed</span> Reactor (TZFBR) provide an improvement in propane conversion by hydrogen removal from the reaction <span class="hlt">bed</span> through the inorganic membrane in addition to in situ catalyst regeneration. Twofold process intensification is thereby achieved when compared to the use of traditional fluidized <span class="hlt">bed</span> reactors (FBR), where coke formation and thermodynamic equilibrium represent important process limitations. Experiments were carried out at 500-575 °C and with catalyst mass to molar flow of fed propane ratios between 15.1 and 35.2 g min mmol-1, employing three different reactor configurations: FBR, TZFBR and TZFBR + Membrane (TZFBR + MB). The results in the FBR showed catalyst deactivation, which was faster at high temperatures. In contrast, by employing the TZFBR with the optimum regenerative agent flow (diluted oxygen), the process activity was sustained throughout the time on stream. The TZFBR + MB showed promising results in catalytic propane dehydrogenation, displacing the reaction towards higher propylene production and giving the best results among the different reactor configurations studied. Furthermore, the results obtained in this study were better than those reported on conventional reactors.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2001GeoJI.147..517S','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2001GeoJI.147..517S"><span>Evidence of the dominance of higher-mode surface waves in the lake-<span class="hlt">bed</span> <span class="hlt">zone</span> of the Valley of Mexico</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Shapiro, N. M.; Singh, S. K.; Almora, D.; Ayala, M.</p> <p>2001-12-01</p> <p>We compare ground motions recorded at the surface and in boreholes at five different locations of the lake-<span class="hlt">bed</span> <span class="hlt">zone</span> of the Valley of Mexico with theoretical dispersion curves and eigenfunctions calculated for the first two modes of Rayleigh and Love waves. We find that (1) the maximum in the horizontal-to-vertical displacement ratio, which occurs at the dominant frequency of the site (0.4Hz), corresponds to the higher mode rather than to the fundamental mode of the Rayleigh waves, (2) borehole records at depths from 0 to 100m show that the normalized vertical displacement does not decrease rapidly below the superficial clay layer, as should be the case for the fundamental mode, but remains ~ 0.8, and (3) the measured phase velocity at a period of about 2.5s (2.0+/-0.5kms-1 ) is too fast for the fundamental mode predicted for the known crustal velocity structure. These observations lead us to conclude that the wavefield in the lake-<span class="hlt">bed</span> <span class="hlt">zone</span> in Mexico City is dominated by higher-mode surface waves. This provides a plausible explanation for the long duration of the coda in the lake-<span class="hlt">bed</span> <span class="hlt">zone</span>. Although shear wave Q is very small (10-20) in the clay layer, the higher modes of surface waves do not propagate in the superficial clay layer but in the underlying structure where Q -values are likely to be relatively high. Thus, while the clay layer plays the passive role of amplifying the ground motion, its contribution in damping out the motion is insignificant. The results have two important practical implications. (1) The strain estimate from recorded ground velocity differs significantly for the fundamental mode as compared to the higher-mode surface waves. (2) If the ground motion is dominated by the fundamental mode, then knowledge of the superficial layer and the velocity contrast with the underlying structure is sufficient for understanding and modelling of the ground motion. If, however, the higher-mode surface waves dominate, then a detailed knowledge of the deeper</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/pp/1708/d2/pdf/pp1708_d2.pdf','USGSPUBS'); return false;" href="https://pubs.usgs.gov/pp/1708/d2/pdf/pp1708_d2.pdf"><span>Correlation chart of Pennsylvanian rocks in Alabama, Tennessee, Kentucky, Virginia, West Virginia, Ohio, Maryland, and Pennsylvania showing approximate position of coal <span class="hlt">beds</span>, coal <span class="hlt">zones</span>, and key stratigraphic units: Chapter D.2 in Coal and petroleum resources in the Appalachian basin: distribution, geologic framework, and geochemical character</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Ruppert, Leslie F.; Trippi, Michael H.; Slucher, Ernie R.; Ruppert, Leslie F.; Ryder, Robert T.</p> <p>2014-01-01</p> <p>Because of the many names used to identify individual coal <span class="hlt">beds</span> and coal <span class="hlt">zones</span> in the historic Appalachian basin coal-mining districts, coal <span class="hlt">bed</span> designations may differ even more than stratigraphic nomenclature. In eastern Kentucky, northwest of the Pine Mountain thrust fault on the Cumberland overthrust sheet, for example, coal <span class="hlt">beds</span> or coal <span class="hlt">zones</span> equivalent to the Lower Elkhorn coal <span class="hlt">zone</span> (within the Pikeville Formation) are identified also as the Eagle coal <span class="hlt">zone</span>, Pond Creek coal <span class="hlt">zone</span>, and Blue Gem coal <span class="hlt">bed</span> (fig. 1). Southeast of the Pine Mountain thrust fault, yet still in Kentucky, equivalent coals in this same interval are known as the Imboden and Rich Mountain. Moreover, this same interval of coal is identified as the Blue Gem coal in Tennessee, the Imboden coal <span class="hlt">bed</span> or Campbell Creek or Pond Creek coal <span class="hlt">zones</span> in Virginia, and the Eagle coal <span class="hlt">zone</span> in West Virginia.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2017IJEaS.106.1205F','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2017IJEaS.106.1205F"><span>Fusulinoids from the Bashkirian-Moscovian transition <span class="hlt">beds</span> of the Shahreza region in the Sanandaj-Sirjan <span class="hlt">Zone</span>, Iran</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Fassihi, Shirin; Sone, Masatoshi; Hairapetian, Vachik; Esfahani, Fariba Shirezadeh</p> <p>2017-06-01</p> <p>The presence of the Bashkirian-Moscovian (lower Pennsylvanian) sequence with mixed siliciclastics and fossil-rich carbonates has long been known from the Sanandaj-Sirjan <span class="hlt">Zone</span> in Iran. However, except for a few studies, its biostratigraphy was not previously investigated in detail. A fusulinoid fauna is recovered from newly measured section, which we named the Asad Abad II section. It is located near the Shahreza town in the Sanandaj-Sirjan <span class="hlt">Zone</span>. The most important fusulinoids of this assemblage are Aljutovella cf. aljutovica Rauser-Chernosouva, Tikhonovichiella tikhonovichi (Rauser-Chernosouva), and Profusulinella (Depratina) prisca (Deprat); they occur in association with species of Ozawainella, Staffellaeformis, and Pseudostaffella. This fauna overall represents a fauna of the latest Bashkirian-earliest Moscovian transition period in the Sanandaj-Sirjan <span class="hlt">Zone</span>. This new fusulinoid fauna shares some common species with the concurrent faunas of the Alborz, East Iran, and Central Iran. Furthermore, it can be easily compared with those of the Russian Platform, Southern and Northern Urals, and Central Taurides (Turkey). The four species of the current fauna, namely Eostaffella compressa Brazhnikova, E. primitiva (Dutkevich), Pseudostaffella timanica Rauser-Chernosouva, and Profusulinella postpararhombiformis Dzhenchuraeva are reported from Iran for the first time. This study also presents the first occurrence of the genera Aljutovella and Tikhonovichiella in the Sanandaj-Sirjan <span class="hlt">Zone</span> of Iran.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2016IJEaS.tmp..141F','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2016IJEaS.tmp..141F"><span>Fusulinoids from the Bashkirian-Moscovian transition <span class="hlt">beds</span> of the Shahreza region in the Sanandaj-Sirjan <span class="hlt">Zone</span>, Iran</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Fassihi, Shirin; Sone, Masatoshi; Hairapetian, Vachik; Esfahani, Fariba Shirezadeh</p> <p>2016-12-01</p> <p>The presence of the Bashkirian-Moscovian (lower Pennsylvanian) sequence with mixed siliciclastics and fossil-rich carbonates has long been known from the Sanandaj-Sirjan <span class="hlt">Zone</span> in Iran. However, except for a few studies, its biostratigraphy was not previously investigated in detail. A fusulinoid fauna is recovered from newly measured section, which we named the Asad Abad II section. It is located near the Shahreza town in the Sanandaj-Sirjan <span class="hlt">Zone</span>. The most important fusulinoids of this assemblage are Aljutovella cf. aljutovica Rauser-Chernosouva, Tikhonovichiella tikhonovichi (Rauser-Chernosouva), and Profusulinella (Depratina) prisca (Deprat); they occur in association with species of Ozawainella, Staffellaeformis, and Pseudostaffella. This fauna overall represents a fauna of the latest Bashkirian-earliest Moscovian transition period in the Sanandaj-Sirjan <span class="hlt">Zone</span>. This new fusulinoid fauna shares some common species with the concurrent faunas of the Alborz, East Iran, and Central Iran. Furthermore, it can be easily compared with those of the Russian Platform, Southern and Northern Urals, and Central Taurides (Turkey). The four species of the current fauna, namely Eostaffella compressa Brazhnikova, E. primitiva (Dutkevich), Pseudostaffella timanica Rauser-Chernosouva, and Profusulinella postpararhombiformis Dzhenchuraeva are reported from Iran for the first time. This study also presents the first occurrence of the genera Aljutovella and Tikhonovichiella in the Sanandaj-Sirjan <span class="hlt">Zone</span> of Iran.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2004AGUFM.H31D0422T','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2004AGUFM.H31D0422T"><span>The Cambric Ditch at the Nevada Test Site as a Long-term Vadose <span class="hlt">Zone</span> Test <span class="hlt">Bed</span></span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Tompson, A. F.; Hunt, J. R.; Hudson, G. B.</p> <p>2004-12-01</p> <p>Atomic weapons testing at the Nevada Test Site introduced many tracers for quantifying hydrologic transport processes in arid climates. The particular experiment at the Cambric site in Frenchman Flat represents an ongoing 29-year field test that could never be repeated and continues to offer opportunities for vadose <span class="hlt">zone</span> studies. The Cambric test released the energy yield equivalent of 0.75 kt of TNT when it was detonated 294 m below the land surface and 73 m below the water table in Frenchman Flat in May 1965. Beginning in 1975, groundwater was pumped steadily from a well located 91 m from the detonation point in order to elicit information on radionuclide migration. The pumping well effluent was monitored, discharged to an unlined ditch, and allowed to flow towards a dry lake 1.6 km away. Approximately one third of this flow was lost to infiltration. Over the next 16 years, pumped groundwater was shown to contain tritium, fission products (technetium-99, iodine-129) and activation products (chlorine-36), all of which can be used to trace water flow in the vadose <span class="hlt">zone</span>. Bromide was also added as an additional tracer into the ditch. Multi-year records exist for water migration in the shallow vadose <span class="hlt">zone</span> along with temperature profiles. Over the course of the pumping experiment, vegetation developed in and near the ditch, providing an additional pathway for water loss by transpiration and selective radionuclide transport. Significant water has not flowed in the ditch since 1991 and the site remains an ideal analog site for the studying drying in arid climates, the adaptability of vegetation under changing water conditions, and the use of helium-3 as a tracer of soil-atmosphere exchange and vadose <span class="hlt">zone</span> - groundwater interactions. In addition, there is evidence that tritiated water and chlorine-36 have infiltrated over 200 meters vertically in the vadose <span class="hlt">zone</span> and have become a source term for groundwater contamination. The Cambric Ditch remains as a field site ideally</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2012EGUGA..14.2955S','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2012EGUGA..14.2955S"><span>Distributed Temperature Sensing as a method to identify groundwater discharge <span class="hlt">zones</span> and in-stream sedimentation processes in soft-<span class="hlt">bedded</span> streams</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Sebok, E.; Duque, C.; Engesgaard, P.; Boegh, E.</p> <p>2012-04-01</p> <p>Fiber optic Distributed Temperature Sensing (DTS) has been shown to be a quick and useful tool to identify spatial variability in groundwater discharge to shallow streams with hard streambed bottoms. Scouring and sedimentation in soft-<span class="hlt">bedded</span> streams however, may cause the cable to float in the water column in some places and to be buried under sediments in other places. Here we report on a field investigation in a soft-<span class="hlt">bedded</span> stream using long-term DTS and <span class="hlt">bed</span> erosion monitoring in order to; (i) understand spatial variability in groundwater discharge, (ii) understand the effects of sediment <span class="hlt">bed</span> erosion processes on DTS, and (iii) to see if DTS can be exploited to measure erosion and sedimentation processes. The idea is that DTS only provides useful information regarding the location of groundwater discharge <span class="hlt">zones</span> within a short period of time after installation and when the cable is subsequently buried under sediment deposits, it is isolated from the stream temperature signal. By recording these temperature anomalies the spatial and temporal evolution of newly deposited sediments can be monitored. The long-term DTS study was carried out at a field site located along Holtum stream in Western Denmark. The 4 m wide stream has a soft sandy streambed, an average discharge of 1068 l/s and a depth of 0.7 m. Contrary to the traditional longitudinal layout, 750 meters of fiber optic cable was fixed to the streambed following a zig-zag pattern in a 70 meter long section providing for a high spatial resolution not only along, but also across the stream with an average 0.4 m distance between the cable rows. <span class="hlt">Zones</span> of groundwater discharge were identified on the basis of a 24h DTS survey on 13 October 2011, right after positioning the cable on the streambed surface. The discrete groundwater inflow points were shown as low temperature anomalies during the day and warm temperature anomalies during the night. Continuous streambed temperature data between 18 and 22 October 2011</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/pages/biblio/1262168-laser-powder-bed-fusion-additive-manufacturing-physics-complex-melt-flow-formation-mechanisms-pores-spatter-denudation-zones','SCIGOV-DOEP'); return false;" href="https://www.osti.gov/pages/biblio/1262168-laser-powder-bed-fusion-additive-manufacturing-physics-complex-melt-flow-formation-mechanisms-pores-spatter-denudation-zones"><span>Laser powder-<span class="hlt">bed</span> fusion additive manufacturing: Physics of complex melt flow and formation mechanisms of pores, spatter, and denudation <span class="hlt">zones</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/pages">DOE PAGES</a></p> <p>Khairallah, Saad A.; Anderson, Andrew T.; Rubenchik, Alexander; ...</p> <p>2016-02-23</p> <p>Our study demonstrates the significant effect of the recoil pressure and Marangoni convection in laser powder <span class="hlt">bed</span> fusion (L-PBF) of 316L stainless steel. A three-dimensional high fidelity powder-scale model reveals how the strong dynamical melt flow generates pore defects, material spattering (sparking), and denudation <span class="hlt">zones</span>. The melt track is divided into three sections: a topological depression, a transition and a tail region, each being the location of specific physical effects. The inclusion of laser ray-tracing energy deposition in the powder-scale model improves over traditional volumetric energy deposition. It enables partial particle melting, which impacts pore defects in the denudation <span class="hlt">zone</span>.more » Different pore formation mechanisms are observed at the edge of a scan track, at the melt pool bottom (during collapse of the pool depression), and at the end of the melt track (during laser power ramp down). Finally, we discuss remedies to these undesirable pores are discussed. The results are validated against the experiments and the sensitivity to laser absorptivity.« less</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/1262168','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/1262168"><span>Laser powder-<span class="hlt">bed</span> fusion additive manufacturing: Physics of complex melt flow and formation mechanisms of pores, spatter, and denudation <span class="hlt">zones</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Khairallah, Saad A.; Anderson, Andrew T.; Rubenchik, Alexander; King, Wayne E.</p> <p>2016-02-23</p> <p>Our study demonstrates the significant effect of the recoil pressure and Marangoni convection in laser powder <span class="hlt">bed</span> fusion (L-PBF) of 316L stainless steel. A three-dimensional high fidelity powder-scale model reveals how the strong dynamical melt flow generates pore defects, material spattering (sparking), and denudation <span class="hlt">zones</span>. The melt track is divided into three sections: a topological depression, a transition and a tail region, each being the location of specific physical effects. The inclusion of laser ray-tracing energy deposition in the powder-scale model improves over traditional volumetric energy deposition. It enables partial particle melting, which impacts pore defects in the denudation <span class="hlt">zone</span>. Different pore formation mechanisms are observed at the edge of a scan track, at the melt pool bottom (during collapse of the pool depression), and at the end of the melt track (during laser power ramp down). Finally, we discuss remedies to these undesirable pores are discussed. The results are validated against the experiments and the sensitivity to laser absorptivity.</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_1");'>1</a></li> <li class="active"><span>2</span></li> <li><a href="#" onclick='return showDiv("page_3");'>3</a></li> <li><a href="#" onclick='return showDiv("page_4");'>4</a></li> <li><a href="#" onclick='return showDiv("page_5");'>5</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_2 --> <div id="page_3" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_1");'>1</a></li> <li><a href="#" onclick='return showDiv("page_2");'>2</a></li> <li class="active"><span>3</span></li> <li><a href="#" onclick='return showDiv("page_4");'>4</a></li> <li><a href="#" onclick='return showDiv("page_5");'>5</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="41"> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2016JGRG..121.1086Z','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2016JGRG..121.1086Z"><span>Temperature effects on nitrogen cycling and nitrate removal-production efficiency in <span class="hlt">bed</span> form-induced hyporheic <span class="hlt">zones</span></span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Zheng, Lizhi; Cardenas, M. Bayani; Wang, Lichun</p> <p>2016-04-01</p> <p>Hyporheic flow in aquatic sediment controls solute and heat transport thereby mediating the fate of nutrients and contaminants, dissolved oxygen, and temperature in the hyporheic <span class="hlt">zone</span> (HZ). We conducted a series of numerical simulations of hyporheic processes within a dune with different uniform temperatures, coupling turbulent open channel fluid flow, porous fluid flow, and reactive solute transport to study the temperature dependence of nitrogen source/sink functionality and its efficiency. Two cases were considered: a polluted stream and a pristine stream. Sensitivity analysis was performed to investigate the influence of stream water [NO3-]/[NH4+]. The simulations showed that in both cases warmer temperatures resulted in shallower denitrification <span class="hlt">zones</span> and oxic-anoxic <span class="hlt">zone</span> boundaries, but the trend of net denitrification rate and nitrate removal or production efficiency of the HZ for these two cases differed. For both cases, at high [NO3-]/[NH4+], the HZ functioned as a NO3- sink with the nitrate removal efficiency increasing with temperature. But at low [NO3-]/[NH4+] for the polluted stream, the HZ is a NO3- sink at low temperature but then switches to a NO3- source at warmer temperatures. For the pristine stream case, the HZ was always a NO3- source, with the NO3- production efficiency increasing monotonically with temperature. In addition, although the interfacial fluid flux expectedly increased with increasing temperature due to decreasing fluid viscosity, the total nitrate flux into the HZ did not follow this trend. This is because when HZ nitrification is high, uniformly elevated [NO3-] lowers dispersive fluxes into the HZ. We found that there are numerous confounding and interacting factors that combined to lead to the final temperature dependence of N transformation reaction rates. Although the temperature effect on the rate constant can be considered as the dominant factor, simply using the Arrhenius equation to predict the reaction rate would lead to</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/24634401','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/24634401"><span>Experimental evaluation of the effect of a modified port-location mode on the performance of a three-<span class="hlt">zone</span> simulated moving-<span class="hlt">bed</span> process for the separation of valine and isoleucine.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Park, Chanhun; Nam, Hee-Geun; Kim, Pung-Ho; Mun, Sungyong</p> <p>2014-06-01</p> <p>The removal of isoleucine from valine has been a key issue in the stage of valine crystallization, which is the final step in the valine production process in industry. To address this issue, a three-<span class="hlt">zone</span> simulated moving-<span class="hlt">bed</span> (SMB) process for the separation of valine and isoleucine has been developed previously. However, the previous process, which was based on a classical port-location mode, had some limitations in throughput and valine product concentration. In this study, a three-<span class="hlt">zone</span> SMB process based on a modified port-location mode was applied to the separation of valine and isoleucine for the purpose of making a marked improvement in throughput and valine product concentration. Computer simulations and a lab-scale process experiment showed that the modified three-<span class="hlt">zone</span> SMB for valine separation led to >65% higher throughput and >160% higher valine concentration compared to the previous three-<span class="hlt">zone</span> SMB for the same separation.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2017AIPC.1826b0009S','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2017AIPC.1826b0009S"><span>Effect of rice husk ash mass on sustainability pyrolysis <span class="hlt">zone</span> of fixed <span class="hlt">bed</span> downdraft gasifier with capacity of 10 kg/hour</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Surjosatyo, Adi; Haq, Imaduddin; Dafiqurrohman, Hafif; Gibran, Felly Rihlat</p> <p>2017-03-01</p> <p>The formation of pyrolysis sustainability (Sustainable Pyrolysis) is the objective of the gasification process. Pyrolysis <span class="hlt">zone</span> in the gasification process is the result of the endothermic reaction that get heat from oxidation (combustion) of the fuel with oxygen, where cracking biomass rice husk result of such as charcoal, water vapor, steam tar, and gas - gas (CO, H 2, CH 4, CO 2 and N 2) and must be maintained at a pyrolysis temperature to obtain results plentiful gas (producer gas) or syngas (synthetic gas). Obtaining continuously syngas is indicated by flow rate (discharge) producer gas well and the consistency of the flame on the gas burner, it is highly influenced by the gasification process and the operation of the gasifier and the mass balance (mass balance) between the feeding rate of rice husk with the disposal of ash (ash removal). In experiments conducted is using fixed <span class="hlt">bed</span> gasifier type downdraft capacity of 10 kg/h. Besides setting the mass of rice husks into the gasifier and disposal arrangements rice husk ash may affect the sustainability of the pyrolysis process, but tar produced during the gasification process causes sticky rice husk ash in the plenum gasifier. Modifications disposal system rice husk ash can facilitate the arrangement of ash disposal then could control the temperature pyrolysis with pyrolysis at temperatures between 500-750 ° C. The experimental study was conducted to determine the effect of mass quantities of rice husk ash issued against sustainability pyrolysis temperature which is obtained at each time disposal of rice husk ash to produce 60-90 grams of ash issued. From some experimental phenomena is expected to be seen pyrolysis and its effect on the flow rate of syngas and the stability of the flame on the gas burner so that this research can find a correlation to obtain performance (performance) gasifier optimal.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.epa.gov/bedbugs','PESTICIDES'); return false;" href="https://www.epa.gov/bedbugs"><span><span class="hlt">Bed</span> Bugs</span></a></p> <p><a target="_blank" href="http://www.epa.gov/pesticides/search.htm">EPA Pesticide Factsheets</a></p> <p></p> <p></p> <p>Prevent, identify, and treat <span class="hlt">bed</span> bug infestations using EPA’s step-by-step guides, based on IPM principles. Find pesticides approved for <span class="hlt">bed</span> bug control, check out the information clearinghouse, and dispel <span class="hlt">bed</span> bug myths.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/25577850','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/25577850"><span><span class="hlt">Bed</span> bugs.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Foulke, Galen T; Anderson, Bryan E</p> <p>2014-09-01</p> <p>The term <span class="hlt">bed</span> bug is applied to 2 species of genus Cimex: lectularius describes the common or temperate <span class="hlt">bed</span> bug, and hemipterus its tropical cousin. Cimex lectularius is aptly named; its genus and species derive from the Latin words for bug and <span class="hlt">bed</span>, respectively. Though the tiny pest is receiving increased public attention and scrutiny, the <span class="hlt">bed</span> bug is hardly a new problem.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/24881495','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/24881495"><span>Enhanced performance of a three-<span class="hlt">zone</span> simulated moving <span class="hlt">bed</span> chromatography for separation of succinic acid and lactic acid by simultaneous use of port-location rearrangement and partial-feeding.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Mun, Sungyong</p> <p>2014-07-11</p> <p>The performance of a three-<span class="hlt">zone</span> simulated moving <span class="hlt">bed</span> (SMB) chromatographic process for separation of succinic acid and lactic acid has been improved to a certain extent in previous researches by applying either a partial-feeding (PF) or a port-location rearrangement (PR) to its operation. To make a further improvement, the strategy of applying both PF and PR simultaneously to the three-<span class="hlt">zone</span> SMB operation was proposed in this study. The results from both equilibrium-theory analysis and detailed simulation proved that the proposed strategy, which was called PF-PR in this article, had the benefit of a synergy between the individual merits of PF and PR in the three-<span class="hlt">zone</span> SMB performance. As a consequence, the PF-PR mode could surpass the PF and the PR modes by a wide margin and the classical mode by a dramatic margin in the aspects of separation performance and throughput.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.fs.usda.gov/treesearch/pubs/7858','TREESEARCH'); return false;" href="https://www.fs.usda.gov/treesearch/pubs/7858"><span>The dominance of dispersion in the evolution of <span class="hlt">bed</span> material waves in gravel-<span class="hlt">bed</span> rivers</span></a></p> <p><a target="_blank" href="http://www.fs.usda.gov/treesearch/">Treesearch</a></p> <p>Thomas E. Lisle; Yantao Cui; Gary Parker; James E. Pizzuto; Annjanette M. Dodd</p> <p>2001-01-01</p> <p>Abstract - <span class="hlt">Bed</span> material waves are temporary <span class="hlt">zones</span> of sediment accumulation created by large sediment inputs. Recent theoretical, experimental and field studies examine factors in fluencing dispersion and translation of <span class="hlt">bed</span> material waves in quasi-uniform, gravel-<span class="hlt">bed</span> channels. Exchanges of sediment between a channel and its floodplain are...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/20080004243','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/20080004243"><span>Fluidized <span class="hlt">bed</span> heating process and apparatus</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>McHale, Edward J. (Inventor)</p> <p>1981-01-01</p> <p>Capacitive electrical heating of a fluidized <span class="hlt">bed</span> enables the individual solid particles within the <span class="hlt">bed</span> to constitute the hottest portion thereof. This effect is achieved by applying an A. C. voltage potential between dielectric coated electrodes, one of which is advantageously the wall of the fluidized <span class="hlt">bed</span> rejection <span class="hlt">zone</span>, sufficient to create electrical currents in said particles so as to dissipate heat therein. In the decomposition of silane or halosilanes in a fluidized <span class="hlt">bed</span> reaction <span class="hlt">zone</span>, such heating enhances the desired deposition of silicon product on the surface of the seed particles within the fluidized <span class="hlt">bed</span> and minimizes undesired coating of silicon on the wall of the reaction <span class="hlt">zone</span> and the homogeneous formation of fine silicon powder within said <span class="hlt">zone</span>.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2015AGUFM.C51E..08K','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2015AGUFM.C51E..08K"><span>Direct Observations of Rapid Basal Melting and <span class="hlt">Bed</span> Topography in the Grounding <span class="hlt">Zones</span> of the Dotson and Crosson Ice Shelves, West Antarctica</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Khazendar, A.; Rignot, E. J.; Schroeder, D. M.; Seroussi, H. L.; Schodlok, M.; Scheuchl, B.; Sutterley, T. C.; Velicogna, I.</p> <p>2015-12-01</p> <p>Glaciological changes of the Dotson and Crosson ice shelves and their tributary glaciers of Smith, Pope and Kohler are among the most noticeable in the Amundsen Sea Embayment region of West Antarctica. Here, we present sounding radar and laser altimetry observations of two aspects that are indispensable for understanding those changes: basal melting and bedrock topography in the grounding <span class="hlt">zones</span>. We find that Smith Glacier in particular thinned by a remarkably fast 300-490 m between the years 2002 and 2009. Its grounding line has retreated far enough to be now at 2000 m below sea level in a previously identified trench. All three glacier grounding lines have already retreated down steeper parts of their bedrocks to flatter terrains, plausibly contributing to the reported slowing down in the acceleration of their ice volume discharges. The wider implications of the work emphasize the unprecedented perspectives that direct observation can offer of diverse grounding <span class="hlt">zone</span> structures and evolution scenarios.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2014AGUFMEP51C3536M','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2014AGUFMEP51C3536M"><span>Spatial Variation in <span class="hlt">Bed</span>-material Load as Captured by Dune-form Analysis and its Connection to Geomorphology of the Backwater <span class="hlt">Zone</span> on the Trinity River, East TX, USA</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Mason, J.; Smith, V. B.; Mohrig, D. C.</p> <p>2014-12-01</p> <p>Recent observations made in the Trinity River of East Texas reveal that systematic spatial changes in bedform geometry, coverage, and inferred activity correlate with documented shifts in the larger-scale geomorphology of the river. Acoustic imaging data was collected through the transition into the backwater <span class="hlt">zone</span>, or the reach of river where flow is affected by hydraulic readjustment between quasi-uniform flow further upstream and gradually varying flow towards the river mouth. Measurements collected immediately following a minor flood record spatial changes in bedforms with dune height systematically decreasing from roughly 0.4 m to 0.2 m and dune length decreasing from 13.4 m to 7.3 m, maintaining a constant value of 29 for the ripple index over a 6 km reach that covers 7 river bends. It appears that bedform height is depth-limited within the quasi-uniform flow, and gradually shifts to occupy a smaller fraction of the increasing flow depth within the backwater <span class="hlt">zone</span>. Over the same reach after a period of extended low river discharge, dune height decreases from 0.3 m to 0, while dune length decreases from 9.0 m to 4.4 m before dunes are completely absent. Ripple index stays relatively constant until the last two bends, a streamwise distance of 2 km, where it rapidly increases from a value of 30 to 44 in the 6th bend and then to infinity in the 7th most downstream bend. Accompanying the disappearance of the dune forms is a systematic reduction in the slopes of their lee faces until the <span class="hlt">bed</span> is completely flat. The location of these shifts in <span class="hlt">bed</span>-material load coincides nicely with and likely accounts for documented geomorphic changes to the river, including a reduction in point bar surface area and volume and a decrease in channel-bend migration rates (Smith, 2012). Results have obvious implications for understanding coastal fluvial geomorphology and can help elucidate relationships between bedforms, <span class="hlt">bed</span>-material load, point bars, and river bend kinematics.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/865180','DOE-PATENT-XML'); return false;" href="http://www.osti.gov/scitech/servlets/purl/865180"><span>Reversed flow fluidized-<span class="hlt">bed</span> combustion apparatus</span></a></p> <p><a target="_blank" href="http://www.osti.gov/doepatents">DOEpatents</a></p> <p>Shang, Jer-Yu; Mei, Joseph S.; Wilson, John S.</p> <p>1984-01-01</p> <p>The present invention is directed to a fluidized-<span class="hlt">bed</span> combustion apparatus provided with a U-shaped combustion <span class="hlt">zone</span>. A cyclone is disposed in the combustion <span class="hlt">zone</span> for recycling solid particulate material. The combustion <span class="hlt">zone</span> configuration and the recycling feature provide relatively long residence times and low freeboard heights to maximize combustion of combustible material, reduce nitrogen oxides, and enhance sulfur oxide reduction.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/864893','DOE-PATENT-XML'); return false;" href="http://www.osti.gov/scitech/servlets/purl/864893"><span>Fluidized <span class="hlt">bed</span> catalytic coal gasification process</span></a></p> <p><a target="_blank" href="http://www.osti.gov/doepatents">DOEpatents</a></p> <p>Euker, Jr., Charles A.; Wesselhoft, Robert D.; Dunkleman, John J.; Aquino, Dolores C.; Gouker, Toby R.</p> <p>1984-01-01</p> <p>Coal or similar carbonaceous solids impregnated with gasification catalyst constituents (16) are oxidized by contact with a gas containing between 2 volume percent and 21 volume percent oxygen at a temperature between 50.degree. C. and 250.degree. C. in an oxidation <span class="hlt">zone</span> (24) and the resultant oxidized, catalyst impregnated solids are then gasified in a fluidized <span class="hlt">bed</span> gasification <span class="hlt">zone</span> (44) at an elevated pressure. The oxidation of the catalyst impregnated solids under these conditions insures that the <span class="hlt">bed</span> density in the fluidized <span class="hlt">bed</span> gasification <span class="hlt">zone</span> will be relatively high even though the solids are gasified at elevated pressure and temperature.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.epa.gov/bedbugs/introduction-bed-bugs','NIH-MEDLINEPLUS'); return false;" href="https://www.epa.gov/bedbugs/introduction-bed-bugs"><span>Introduction to <span class="hlt">Bed</span> Bugs</span></a></p> <p><a target="_blank" href="http://medlineplus.gov/">MedlinePlus</a></p> <p></p> <p></p> <p>... preventing infestations, increased resistance of <span class="hlt">bed</span> bugs to pesticides, and ineffective pest control practices. The good news ... <span class="hlt">Bed</span> Bugs — Do-it-yourself <span class="hlt">Bed</span> Bug Control — Pesticides to Control <span class="hlt">Bed</span> Bugs <span class="hlt">Bed</span> Bug Information Clearinghouse ...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19820008601','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19820008601"><span>Solar heated fluidized <span class="hlt">bed</span> gasification system</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Qader, S. A. (Inventor)</p> <p>1981-01-01</p> <p>A solar-powered fluidized <span class="hlt">bed</span> gasification system for gasifying carbonaceous material is presented. The system includes a solar gasifier which is heated by fluidizing gas and steam. Energy to heat the gas and steam is supplied by a high heat capacity refractory honeycomb which surrounds the fluid <span class="hlt">bed</span> reactor <span class="hlt">zone</span>. The high heat capacity refractory honeycomb is heated by solar energy focused on the honeycomb by solar concentrator through solar window. The fluid <span class="hlt">bed</span> reaction <span class="hlt">zone</span> is also heated directly and uniformly by thermal contact of the high heat capacity ceramic honeycomb with the walls of the fluidized <span class="hlt">bed</span> reactor. Provisions are also made for recovering and recycling catalysts used in the gasification process. Back-up furnace is provided for start-up procedures and for supplying heat to the fluid <span class="hlt">bed</span> reaction <span class="hlt">zone</span> when adequate supplies of solar energy are not available.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/25742751','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/25742751"><span><span class="hlt">Bed</span> agglomeration characteristics of rice straw combustion in a vortexing fluidized-<span class="hlt">bed</span> combustor.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Duan, Feng; Chyang, Chien-Song; Zhang, Li-hui; Yin, Siang-Fong</p> <p>2015-05-01</p> <p>To investigate <span class="hlt">bed</span> agglomeration characteristics, the combustion of pelletized rice straw was conducted in a bench-scale vortexing fluidized <span class="hlt">bed</span>. Effects of <span class="hlt">bed</span> temperature, superficial velocity, secondary gas velocities, and mass blended ratio of coal on the defluidization time were investigated. The alkali concentrations in different sections of the <span class="hlt">bed</span> <span class="hlt">zone</span> were also studied. The <span class="hlt">bed</span> materials and agglomerates were analyzed using SEM/EDX to obtain the surface morphology and the compositions. The results revealed that the defluidization time is increased with superficial gas velocity and is decreased with <span class="hlt">bed</span> temperature. Eutectic composition with low melting point materials promote defluidization at high temperatures. Effect of the secondary gas velocity on the defluidization time indicates different trends at different <span class="hlt">bed</span> temperatures. The highest value of alkali concentration appears at upper bubbling <span class="hlt">zone</span>. Coal ash can avoid the existence of a certain eutectic composition, and increases its melting point. Copyright © 2015 Elsevier Ltd. All rights reserved.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/20080012362','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/20080012362"><span>Reactor for fluidized <span class="hlt">bed</span> silane decomposition</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Iya, Sridhar K. (Inventor)</p> <p>1989-01-01</p> <p>An improved heated fluidized <span class="hlt">bed</span> reactor and method for the production of high purity polycrystalline silicon by silane pyrolysis wherein silicon seed particles are heated in an upper heating <span class="hlt">zone</span> of the reactor and admixed with particles in a lower <span class="hlt">zone</span>, in which <span class="hlt">zone</span> a silane-containing gas stream, having passed through a lower cooled gas distribution <span class="hlt">zone</span> not conducive to silane pyrolysis, contacts the heated seed particles whereon the silane is heterogeneously reduced to silicon.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/27208988','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/27208988"><span>Effect of adsorbent particle size on the relative merits of a non-triangular and a triangular separation region in the optimal design of a three-<span class="hlt">zone</span> simulated moving <span class="hlt">bed</span> chromatography for binary separation with linear isotherms.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Mun, Sungyong</p> <p>2016-06-24</p> <p>The design approaches for a three-<span class="hlt">zone</span> simulated moving <span class="hlt">bed</span> (SMB) chromatography with linear isotherms can be classified into two categories, depending on whether the SMB design is based on a classical region (i.e., triangular region of the triangle theory) in the first quadrant (m2, m3) plane or on a non-triangular separation region in the third quadrant (m2, m3) plane. The SMBs based on the classical and the non-triangular design approaches, which are named here as (m(+))_SMB and (m(-))_SMB respectively, are compared in this study using the Pareto solutions from the simultaneous optimization of throughput and desorbent usage under the constraints on product purities and pressure drop. The results showed that the (m(-))_SMB approach led to significantly lower desorbent usage than the (m(+))_SMB approach, which was due to the fact that the flow-rate-ratios from the (m(-))_SMB approach are extremely lower than those from the (m(+))_SMB approach. This factor also enables the (m(-))_SMB to have a significantly lower pressure drop, thereby making its throughput less restricted by a pressure-drop constraint. Due to such advantage of the (m(-))_SMB, it can make a further substantial improvement in throughput by modulating its adsorbent particle size properly. This issue was investigated using a model separation system containing succinic acid and acetic acid. It was confirmed that if the adsorbent particle size corresponding to the boundary between a mass-transfer limiting region and a pressure-drop limiting region is adopted, the (m(-))_SMB can lead to 82% higher throughput and 73% lower desorbent usage than the (m(+))_SMB. Copyright © 2016 Elsevier B.V. All rights reserved.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/6958805','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/6958805"><span>Fluidized <span class="hlt">bed</span> for production of polycrystalline silicon</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Flagella, R.N.</p> <p>1992-08-18</p> <p>This patent describes a method for removing silicon powder particles from a reactor that produces polycrystalline silicon by the pyrolysis of a silane containing gas in a fluidized <span class="hlt">bed</span> reaction <span class="hlt">zone</span> of silicon seed particles. It comprises introducing the silane containing gas stream into the reaction <span class="hlt">zone</span> of fluidized silicon seed particles; heterogeneously decomposing the silane containing gas under conditions; collecting the silicon product particles from the collection <span class="hlt">zone</span>; and removing silicon powder particles from the reactor.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.youtube.com/watch?v=JpLjR-qwYUs','SCIGOVIMAGE-NASA'); return false;" href="http://www.youtube.com/watch?v=JpLjR-qwYUs"><span>Packed <span class="hlt">Bed</span> Reactor Experiment</span></a></p> <p><a target="_blank" href="https://images.nasa.gov/">NASA Image and Video Library</a></p> <p></p> <p></p> <p>The purpose of the Packed <span class="hlt">Bed</span> Reactor Experiment in low gravity is to determine how a mixture of gas and liquid flows through a packed <span class="hlt">bed</span> in reduced gravity. A packed <span class="hlt">bed</span> consists of a metal pipe ...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/863422','DOE-PATENT-XML'); return false;" href="http://www.osti.gov/scitech/servlets/purl/863422"><span>Fluid-<span class="hlt">bed</span> air-supply system</span></a></p> <p><a target="_blank" href="http://www.osti.gov/doepatents">DOEpatents</a></p> <p>Atabay, Keramettin</p> <p>1979-01-01</p> <p>The air-supply system for a fluidized-<span class="hlt">bed</span> furnace includes two air conduits for the same combustion <span class="hlt">zone</span>. The conduits feed separate sets of holes in a distributor plate through which fluidizing air flows to reach the <span class="hlt">bed</span>. During normal operation, only one conduit and set of holes is used, but the second conduit and set of holes is employed during start-up.</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_1");'>1</a></li> <li><a href="#" onclick='return showDiv("page_2");'>2</a></li> <li class="active"><span>3</span></li> <li><a href="#" onclick='return showDiv("page_4");'>4</a></li> <li><a href="#" onclick='return showDiv("page_5");'>5</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_3 --> <div id="page_4" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_2");'>2</a></li> <li><a href="#" onclick='return showDiv("page_3");'>3</a></li> <li class="active"><span>4</span></li> <li><a href="#" onclick='return showDiv("page_5");'>5</a></li> <li><a href="#" onclick='return showDiv("page_6");'>6</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="61"> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/863420','DOE-PATENT-XML'); return false;" href="http://www.osti.gov/scitech/servlets/purl/863420"><span>Fluid-<span class="hlt">bed</span> air-supply system</span></a></p> <p><a target="_blank" href="http://www.osti.gov/doepatents">DOEpatents</a></p> <p>Zielinski, Edward A.; Comparato, Joseph R.</p> <p>1979-01-01</p> <p>The air-supply system for a fluidized-<span class="hlt">bed</span> furnace includes two air conduits for the same combustion <span class="hlt">zone</span>. The conduits feed separate sets of holes in a distributor plate through which fluidizing air flows to reach the <span class="hlt">bed</span>. During normal operation, only one conduit and set of holes is used, but the second conduit and set of holes is employed during start-up.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/864099','DOE-PATENT-XML'); return false;" href="http://www.osti.gov/scitech/servlets/purl/864099"><span>Solids feed nozzle for fluidized <span class="hlt">bed</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/doepatents">DOEpatents</a></p> <p>Zielinski, Edward A.</p> <p>1982-01-01</p> <p>The vertical fuel pipe of a fluidized <span class="hlt">bed</span> extends up through the perforated support structure of the <span class="hlt">bed</span> to discharge granulated solid fuel into the expanded <span class="hlt">bed</span>. A cap, as a deflecting structure, is supported above the discharge of the fuel pipe and is shaped and arranged to divert the carrier fluid and granulated fuel into the combusting <span class="hlt">bed</span>. The diverter structure is spaced above the end of the fuel pipe and provided with a configuration on its underside to form a venturi section which generates a low pressure in the stream into which the granules of solid fuel are drawn to lengthen their residence time in the combustion <span class="hlt">zone</span> of the <span class="hlt">bed</span> adjacent the fuel pipe.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/863760','DOE-PATENT-XML'); return false;" href="http://www.osti.gov/scitech/servlets/purl/863760"><span>Pyrolysis reactor and fluidized <span class="hlt">bed</span> combustion chamber</span></a></p> <p><a target="_blank" href="http://www.osti.gov/doepatents">DOEpatents</a></p> <p>Green, Norman W.</p> <p>1981-01-06</p> <p>A solid carbonaceous material is pyrolyzed in a descending flow pyrolysis reactor in the presence of a particulate source of heat to yield a particulate carbon containing solid residue. The particulate source of heat is obtained by educting with a gaseous source of oxygen the particulate carbon containing solid residue from a fluidized <span class="hlt">bed</span> into a first combustion <span class="hlt">zone</span> coupled to a second combustion <span class="hlt">zone</span>. A source of oxygen is introduced into the second combustion <span class="hlt">zone</span> to oxidize carbon monoxide formed in the first combustion <span class="hlt">zone</span> to heat the solid residue to the temperature of the particulate source of heat.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/862839','DOE-PATENT-XML'); return false;" href="http://www.osti.gov/scitech/servlets/purl/862839"><span>Method for in situ gasification of a subterranean coal <span class="hlt">bed</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/doepatents">DOEpatents</a></p> <p>Shuck, Lowell Z.</p> <p>1977-05-31</p> <p>The method of the present invention relates to providing controlled directional bores in subterranean earth formations, especially coal <span class="hlt">beds</span> for facilitating in situ gasification operations. Boreholes penetrating the coal <span class="hlt">beds</span> are interconnected by laser-drilled bores disposed in various arrays at selected angles to the major permeability direction in the coal <span class="hlt">bed</span>. These laser-drilled bores are enlarged by fracturing prior to the gasification of the coal <span class="hlt">bed</span> to facilitate the establishing of combustion <span class="hlt">zones</span> of selected configurations in the coal <span class="hlt">bed</span> for maximizing the efficiency of the gasification operation.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/865798','DOE-PATENT-XML'); return false;" href="http://www.osti.gov/scitech/servlets/purl/865798"><span>Reducing mode circulating fluid <span class="hlt">bed</span> combustion</span></a></p> <p><a target="_blank" href="http://www.osti.gov/doepatents">DOEpatents</a></p> <p>Lin, Yung-Yi; Sadhukhan, Pasupati; Fraley, Lowell D.; Hsiao, Keh-Hsien</p> <p>1986-01-01</p> <p>A method for combustion of sulfur-containing fuel in a circulating fluid <span class="hlt">bed</span> combustion system wherein the fuel is burned in a primary combustion <span class="hlt">zone</span> under reducing conditions and sulfur captured as alkaline sulfide. The reducing gas formed is oxidized to combustion gas which is then separated from solids containing alkaline sulfide. The separated solids are then oxidized and recycled to the primary combustion <span class="hlt">zone</span>.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.gpo.gov/fdsys/pkg/CFR-2011-title7-vol15/pdf/CFR-2011-title7-vol15-sec2902-15.pdf','CFR2011'); return false;" href="https://www.gpo.gov/fdsys/pkg/CFR-2011-title7-vol15/pdf/CFR-2011-title7-vol15-sec2902-15.pdf"><span>7 CFR 2902.15 - <span class="hlt">Bedding</span>, <span class="hlt">bed</span> linens, and towels.</span></a></p> <p><a target="_blank" href="http://www.gpo.gov/fdsys/browse/collectionCfr.action?selectedYearFrom=2011&page.go=Go">Code of Federal Regulations, 2011 CFR</a></p> <p></p> <p>2011-01-01</p> <p>... 7 Agriculture 15 2011-01-01 2011-01-01 false <span class="hlt">Bedding</span>, <span class="hlt">bed</span> linens, and towels. 2902.15 Section 2902... PROCUREMENT Designated Items § 2902.15 <span class="hlt">Bedding</span>, <span class="hlt">bed</span> linens, and towels. (a) Definition. (1) <span class="hlt">Bedding</span> is that..., bedspreads, comforters, and quilts. (2) <span class="hlt">Bed</span> linens are woven cloth sheets and pillowcases used in <span class="hlt">bedding</span>....</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.gpo.gov/fdsys/pkg/CFR-2013-title7-vol15/pdf/CFR-2013-title7-vol15-sec3201-15.pdf','CFR2013'); return false;" href="https://www.gpo.gov/fdsys/pkg/CFR-2013-title7-vol15/pdf/CFR-2013-title7-vol15-sec3201-15.pdf"><span>7 CFR 3201.15 - <span class="hlt">Bedding</span>, <span class="hlt">bed</span> linens, and towels.</span></a></p> <p><a target="_blank" href="http://www.gpo.gov/fdsys/browse/collectionCfr.action?selectedYearFrom=2013&page.go=Go">Code of Federal Regulations, 2013 CFR</a></p> <p></p> <p>2013-01-01</p> <p>... 7 Agriculture 15 2013-01-01 2013-01-01 false <span class="hlt">Bedding</span>, <span class="hlt">bed</span> linens, and towels. 3201.15 Section 3201... PROCUREMENT Designated Items § 3201.15 <span class="hlt">Bedding</span>, <span class="hlt">bed</span> linens, and towels. (a) Definition. (1) <span class="hlt">Bedding</span> is that..., bedspreads, comforters, and quilts. (2) <span class="hlt">Bed</span> linens are woven cloth sheets and pillowcases used in <span class="hlt">bedding</span>....</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.gpo.gov/fdsys/pkg/CFR-2012-title7-vol15/pdf/CFR-2012-title7-vol15-sec3201-15.pdf','CFR2012'); return false;" href="https://www.gpo.gov/fdsys/pkg/CFR-2012-title7-vol15/pdf/CFR-2012-title7-vol15-sec3201-15.pdf"><span>7 CFR 3201.15 - <span class="hlt">Bedding</span>, <span class="hlt">bed</span> linens, and towels.</span></a></p> <p><a target="_blank" href="http://www.gpo.gov/fdsys/browse/collectionCfr.action?selectedYearFrom=2012&page.go=Go">Code of Federal Regulations, 2012 CFR</a></p> <p></p> <p>2012-01-01</p> <p>... 7 Agriculture 15 2012-01-01 2012-01-01 false <span class="hlt">Bedding</span>, <span class="hlt">bed</span> linens, and towels. 3201.15 Section 3201... PROCUREMENT Designated Items § 3201.15 <span class="hlt">Bedding</span>, <span class="hlt">bed</span> linens, and towels. (a) Definition. (1) <span class="hlt">Bedding</span> is that..., bedspreads, comforters, and quilts. (2) <span class="hlt">Bed</span> linens are woven cloth sheets and pillowcases used in <span class="hlt">bedding</span>....</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.gpo.gov/fdsys/pkg/CFR-2010-title7-vol15/pdf/CFR-2010-title7-vol15-sec2902-15.pdf','CFR'); return false;" href="https://www.gpo.gov/fdsys/pkg/CFR-2010-title7-vol15/pdf/CFR-2010-title7-vol15-sec2902-15.pdf"><span>7 CFR 2902.15 - <span class="hlt">Bedding</span>, <span class="hlt">bed</span> linens, and towels.</span></a></p> <p><a target="_blank" href="http://www.gpo.gov/fdsys/browse/collectionCfr.action?selectedYearFrom=2010&page.go=Go">Code of Federal Regulations, 2010 CFR</a></p> <p></p> <p>2010-01-01</p> <p>... 7 Agriculture 15 2010-01-01 2010-01-01 false <span class="hlt">Bedding</span>, <span class="hlt">bed</span> linens, and towels. 2902.15 Section 2902... PROCUREMENT Designated Items § 2902.15 <span class="hlt">Bedding</span>, <span class="hlt">bed</span> linens, and towels. (a) Definition. (1) <span class="hlt">Bedding</span> is that..., bedspreads, comforters, and quilts. (2) <span class="hlt">Bed</span> linens are woven cloth sheets and pillowcases used in <span class="hlt">bedding</span>....</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.gpo.gov/fdsys/pkg/CFR-2014-title7-vol15/pdf/CFR-2014-title7-vol15-sec3201-15.pdf','CFR2014'); return false;" href="https://www.gpo.gov/fdsys/pkg/CFR-2014-title7-vol15/pdf/CFR-2014-title7-vol15-sec3201-15.pdf"><span>7 CFR 3201.15 - <span class="hlt">Bedding</span>, <span class="hlt">bed</span> linens, and towels.</span></a></p> <p><a target="_blank" href="http://www.gpo.gov/fdsys/browse/collectionCfr.action?selectedYearFrom=2014&page.go=Go">Code of Federal Regulations, 2014 CFR</a></p> <p></p> <p>2014-01-01</p> <p>... 7 Agriculture 15 2014-01-01 2014-01-01 false <span class="hlt">Bedding</span>, <span class="hlt">bed</span> linens, and towels. 3201.15 Section 3201... PROCUREMENT Designated Items § 3201.15 <span class="hlt">Bedding</span>, <span class="hlt">bed</span> linens, and towels. (a) Definition. (1) <span class="hlt">Bedding</span> is that..., bedspreads, comforters, and quilts. (2) <span class="hlt">Bed</span> linens are woven cloth sheets and pillowcases used in <span class="hlt">bedding</span>....</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/864177','DOE-PATENT-XML'); return false;" href="http://www.osti.gov/scitech/servlets/purl/864177"><span>Hybrid fluidized <span class="hlt">bed</span> combuster</span></a></p> <p><a target="_blank" href="http://www.osti.gov/doepatents">DOEpatents</a></p> <p>Kantesaria, Prabhudas P.; Matthews, Francis T.</p> <p>1982-01-01</p> <p>A first atmospheric bubbling fluidized <span class="hlt">bed</span> furnace is combined with a second turbulent, circulating fluidized <span class="hlt">bed</span> furnace to produce heat efficiently from crushed solid fuel. The <span class="hlt">bed</span> of the second furnace receives the smaller sizes of crushed solid fuel, unreacted limestone from the first <span class="hlt">bed</span>, and elutriated solids extracted from the flu gases of the first <span class="hlt">bed</span>. The two-stage combustion of crushed solid fuel provides a system with an efficiency greater than available with use of a single furnace of a fluidized <span class="hlt">bed</span>.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/868588','DOE-PATENT-XML'); return false;" href="http://www.osti.gov/scitech/servlets/purl/868588"><span>Fluidized <span class="hlt">bed</span> selective pyrolysis of coal</span></a></p> <p><a target="_blank" href="http://www.osti.gov/doepatents">DOEpatents</a></p> <p>Shang, Jer Y.; Cha, Chang Y.; Merriam, Norman W.</p> <p>1992-01-01</p> <p>The present invention discloses a process for the pyrolysis of coal which comprises the effective utilization of two zonal inclined fluidized <span class="hlt">beds</span>, where said <span class="hlt">zones</span> can be selectively controlled as to temperature and heating rate. The first zonal inclined fluidized <span class="hlt">bed</span> serves as a dryer for crushed coal and additionally is controlled to selectively pyrolyze said coal producing substantially carbon dioxide for recycle use. The second zonal inclined fluidized <span class="hlt">bed</span> further pyrolyzes the coal to gaseous, liquid and char products under controlled temperature and heating rate <span class="hlt">zones</span> designed to economically integrate the product mix. The gas and liquid products are recovered from the gaseous effluent stream while the char which remains can be further treated or utilized in a subsequent process step.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/biblio/7279618','DOE-PATENT-XML'); return false;" href="http://www.osti.gov/scitech/biblio/7279618"><span>Fluidized <span class="hlt">bed</span> selective pyrolysis of coal</span></a></p> <p><a target="_blank" href="http://www.osti.gov/doepatents">DOEpatents</a></p> <p>Shang, J.Y.; Cha, C.Y.; Merriam, N.W.</p> <p>1992-12-15</p> <p>The present invention discloses a process for the pyrolysis of coal which comprises the effective utilization of two zonal inclined fluidized <span class="hlt">beds</span>, where said <span class="hlt">zones</span> can be selectively controlled as to temperature and heating rate. The first zonal inclined fluidized <span class="hlt">bed</span> serves as a dryer for crushed coal and additionally is controlled to selectively pyrolyze said coal producing substantially carbon dioxide for recycle use. The second zonal inclined fluidized <span class="hlt">bed</span> further pyrolyses the coal to gaseous, liquid and char products under controlled temperature and heating rate <span class="hlt">zones</span> designed to economically integrate the product mix. The gas and liquid products are recovered from the gaseous effluent stream while the char which remains can be further treated or utilized in a subsequent process step. 9 figs.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/6869469','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/6869469"><span><span class="hlt">Bed</span> material agglomeration during fluidized <span class="hlt">bed</span> combustion</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Brown, R.C.; Dawson, M.R.; Noble, S.</p> <p>1993-02-01</p> <p>The purpose of this project is to determine the physical and chemical reactions which led to the undesired agglomeration of <span class="hlt">bed</span> material during fluidized <span class="hlt">bed</span> combustion and to relate these reactions to specific causes. Survey of industrial-scale fluidized <span class="hlt">bed</span> combustors is being conducted to determine the occurrence of <span class="hlt">bed</span> agglomeration and the circumstances under which agglomeration took place. This task should be finished by the end of February. Samples of <span class="hlt">bed</span> material, agglomerate material, and boiler deposits are being requested from boiler operators as part of the survey. Once received, these sample will be analyzed to determine chemical and mineralogic composition. The bulk chemical determination will be performed using x-ray fluorescence and inductively coupled plasma-optical emission (ICP). Mineralogy will be detected by x-ray diffraction (XRD). Chemical and mineral reactions will be determined by scanning electron microscopy, optical microscopy, and electron microprobe.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.epa.gov/managing-pests-schools/bed-bugs-and-schools','PESTICIDES'); return false;" href="https://www.epa.gov/managing-pests-schools/bed-bugs-and-schools"><span><span class="hlt">Bed</span> Bugs and Schools</span></a></p> <p><a target="_blank" href="http://www.epa.gov/pesticides/search.htm">EPA Pesticide Factsheets</a></p> <p></p> <p></p> <p><span class="hlt">Bed</span> bugs have long been a pest – feeding on blood, causing itchy bites and generally irritating their human hosts. They are successful hitchhikers, and can move from an infested site to furniture, <span class="hlt">bedding</span>, baggage, boxes, and clothing.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://eric.ed.gov/?q=foot&pg=4&id=EJ938144','ERIC'); return false;" href="https://eric.ed.gov/?q=foot&pg=4&id=EJ938144"><span>Making a <span class="hlt">Bed</span></span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Wexler, Anthony; Stein, Sherman</p> <p>2005-01-01</p> <p>The origins of this paper lay in making <span class="hlt">beds</span> by putting pieces of plywood on a frame: If <span class="hlt">beds</span> need to be 4 feet 6 inches by 6 feet 3 inches, and plywood comes in 4-foot by 8-foot sheets, how should one cut the plywood to minimize waste (and have stable <span class="hlt">beds</span>)? The problem is of course generalized.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=foot&pg=4&id=EJ938144','ERIC'); return false;" href="http://eric.ed.gov/?q=foot&pg=4&id=EJ938144"><span>Making a <span class="hlt">Bed</span></span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Wexler, Anthony; Stein, Sherman</p> <p>2005-01-01</p> <p>The origins of this paper lay in making <span class="hlt">beds</span> by putting pieces of plywood on a frame: If <span class="hlt">beds</span> need to be 4 feet 6 inches by 6 feet 3 inches, and plywood comes in 4-foot by 8-foot sheets, how should one cut the plywood to minimize waste (and have stable <span class="hlt">beds</span>)? The problem is of course generalized.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19820003271','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19820003271"><span>Fluidized <span class="hlt">bed</span> coal combustion reactor</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Moynihan, P. I.; Young, D. L. (Inventor)</p> <p>1981-01-01</p> <p>A fluidized <span class="hlt">bed</span> coal reactor includes a combination nozzle-injector ash-removal unit formed by a grid of closely spaced open channels, each containing a worm screw conveyor, which function as continuous ash removal troughs. A pressurized air-coal mixture is introduced below the unit and is injected through the elongated nozzles formed by the spaces between the channels. The ash build-up in the troughs protects the worm screw conveyors as does the cooling action of the injected mixture. The ash layer and the pressure from the injectors support a fluidized flame combustion <span class="hlt">zone</span> above the grid which heats water in boiler tubes disposed within and/or above the combustion <span class="hlt">zone</span> and/or within the walls of the reactor.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2017WRR....53.3067S','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2017WRR....53.3067S"><span>A numerical investigation into the importance of <span class="hlt">bed</span> permeability on determining flow structures over river dunes</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Sinha, Sumit; Hardy, Richard J.; Blois, Gianluca; Best, James L.; Sambrook Smith, Gregory H.</p> <p>2017-04-01</p> <p>Although permeable sediments dominate the majority of natural environments past work concerning <span class="hlt">bed</span> form dynamics has considered the <span class="hlt">bed</span> to be impermeable, and has generally neglected flow between the hyporheic <span class="hlt">zone</span> and boundary layer. Herein, we present results detailing numerically modeled flow which allow the effects of <span class="hlt">bed</span> permeability on <span class="hlt">bed</span> form dynamics to be assessed. Simulation of an isolated impermeable <span class="hlt">bed</span> form over a permeable <span class="hlt">bed</span> shows that flow is forced into the <span class="hlt">bed</span> upstream of the dune and returns to the boundary layer at the leeside, in the form of returning jets that generate horseshoe-shaped vortices. The returning flow significantly influences the leeside flow, modifying the separation <span class="hlt">zone</span>, lifting the shear layer adjoining the separation <span class="hlt">zone</span> away from the <span class="hlt">bed</span>. Simulation of a permeable dune on a permeable <span class="hlt">bed</span> reveals even greater modifications as the flow through the dune negates the formation of any flow separation in the leeside. With two dunes placed in series the flow over the downstream dune is influenced by the developing boundary layer on the leeside of the upstream dune. For the permeable <span class="hlt">bed</span> case, the upwelling flow lifts the separated flow from the <span class="hlt">bed</span>, modifies the shear layer through the coalescence with vortices generated, and causes the shear layer to undulate rather than be parallel to the <span class="hlt">bed</span>. These results demonstrate the significant effect that <span class="hlt">bed</span> permeability has on the flow over <span class="hlt">bed</span> forms that may be critical in affecting the flux of water and nutrients.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.epa.gov/bedbugs/collaborative-strategy-bed-bugs','PESTICIDES'); return false;" href="https://www.epa.gov/bedbugs/collaborative-strategy-bed-bugs"><span>Collaborative Strategy on <span class="hlt">Bed</span> Bugs</span></a></p> <p><a target="_blank" href="http://www.epa.gov/pesticides/search.htm">EPA Pesticide Factsheets</a></p> <p></p> <p></p> <p>The Collaborative Strategy on <span class="hlt">Bed</span> Bugs was developed by the Federal <span class="hlt">Bed</span> Bug Workgroup to clarify the federal role in <span class="hlt">bed</span> bug control and highlight ways that government, community, academia and private industry can work together on <span class="hlt">bed</span> bug issues.</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_2");'>2</a></li> <li><a href="#" onclick='return showDiv("page_3");'>3</a></li> <li class="active"><span>4</span></li> <li><a href="#" onclick='return showDiv("page_5");'>5</a></li> <li><a href="#" onclick='return showDiv("page_6");'>6</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_4 --> <div id="page_5" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_3");'>3</a></li> <li><a href="#" onclick='return showDiv("page_4");'>4</a></li> <li class="active"><span>5</span></li> <li><a href="#" onclick='return showDiv("page_6");'>6</a></li> <li><a href="#" onclick='return showDiv("page_7");'>7</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="81"> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/865043','DOE-PATENT-XML'); return false;" href="http://www.osti.gov/scitech/servlets/purl/865043"><span>Ash <span class="hlt">bed</span> level control system for a fixed-<span class="hlt">bed</span> coal gasifier</span></a></p> <p><a target="_blank" href="http://www.osti.gov/doepatents">DOEpatents</a></p> <p>Fasching, George E.; Rotunda, John R.</p> <p>1984-01-01</p> <p>An ash level control system is provided which incorporates an ash level meter to automatically control the ash <span class="hlt">bed</span> level of a coal gasifier at a selected level. The ash level signal from the ash level meter is updated during each cycle that a <span class="hlt">bed</span> stirrer travels up and down through the extent of the ash <span class="hlt">bed</span> level. The ash level signal is derived from temperature measurements made by thermocouples carried by the stirrer as it passes through the ash <span class="hlt">bed</span> and into the fire <span class="hlt">zone</span> immediately above the ash <span class="hlt">bed</span>. The level signal is compared with selected threshold level signal to determine if the ash level is above or below the selected level once each stirrer cycle. A first counter is either incremented or decremented accordingly. The registered count of the first counter is preset in a down counter once each cycle and the preset count is counted down at a selected clock rate. A grate drive is activated to rotate a grate assembly supporting the ash <span class="hlt">bed</span> for a period equal to the count down period to maintain the selected ash <span class="hlt">bed</span> level. In order to avoid grate binding, the controller provides a short base operating duration time each stirrer cycle. If the ash <span class="hlt">bed</span> level drops below a selected low level or exceeds a selected high level, means are provided to notify the operator.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/6177140','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/6177140"><span>Fluidized <span class="hlt">bed</span> retorting of eastern oil shale</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Gaire, R.J.; Mazzella, G.</p> <p>1989-03-01</p> <p>This topical report summarizes the conceptual design of an integrated oil shale processing plant based on fluidized <span class="hlt">bed</span> retorting of eastern New Albany oil shale. This is the fourth design study conducted by Foster Wheeler; previous design cases employed the following technologies: Fluidized <span class="hlt">bed</span> rotating/combustion of Colorado Mahogany <span class="hlt">zone</span> shale. An FCC concept of fluidized <span class="hlt">bed</span> retorting/combustion of Colorado Mahogany <span class="hlt">zone</span> shale. Directly heated moving vertical-<span class="hlt">bed</span> process using Colorado Mahogany <span class="hlt">zone</span> shale. The conceptual design encompasses a grassroots facility which processes run-of-mine oil shale into a syncrude oil product and dispose of the spent shale solids. The plant has a nominal capacity of 50,000 barrels per day of syncrude product, produced from oil shale feed having a Fischer Assay of 15 gallons per ton. Design of the processing units was based on non-confidential published information and supplemental data from process licensors. Maximum use of process and cost information developed in the previous Foster Wheeler studies was employed. The integrated plant design is described in terms of the individual process units and plant support systems. The estimated total plant investment is detailed by plant section and estimates of the annual operating requirements and costs are provided. In addition, process design assumptions and uncertainties are documented and recommendations for process alternatives, which could improve the overall plant economics, are discussed. 12 refs., 17 figs., 52 tabs.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.epa.gov/emergency-response/safety-zones','PESTICIDES'); return false;" href="https://www.epa.gov/emergency-response/safety-zones"><span>Safety <span class="hlt">Zones</span></span></a></p> <p><a target="_blank" href="http://www.epa.gov/pesticides/search.htm">EPA Pesticide Factsheets</a></p> <p></p> <p></p> <p>These are established primarily to reduce the accidental spread of hazardous substances by workers or equipment from contaminated areas to clean areas. They include the exclusion (hot) <span class="hlt">zone</span>, contamination reduction (warm) <span class="hlt">zone</span>, and support (cold) <span class="hlt">zone</span>.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19780006176','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19780006176"><span>Fluidized <span class="hlt">bed</span> combustor modeling</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Horio, M.; Rengarajan, P.; Krishnan, R.; Wen, C. Y.</p> <p>1977-01-01</p> <p>A general mathematical model for the prediction of performance of a fluidized <span class="hlt">bed</span> coal combustor (FBC) is developed. The basic elements of the model consist of: (1) hydrodynamics of gas and solids in the combustor; (2) description of gas and solids contacting pattern; (3) kinetics of combustion; and (4) absorption of SO2 by limestone in the <span class="hlt">bed</span>. The model is capable of calculating the combustion efficiency, axial <span class="hlt">bed</span> temperature profile, carbon hold-up in the <span class="hlt">bed</span>, oxygen and SO2 concentrations in the bubble and emulsion phases, sulfur retention efficiency and particulate carry over by elutriation. The effects of <span class="hlt">bed</span> geometry, excess air, location of heat transfer coils in the <span class="hlt">bed</span>, calcium to sulfur ratio in the feeds, etc. are examined. The calculated results are compared with experimental data. Agreement between the calculated results and the observed data are satisfactory in most cases. Recommendations to enhance the accuracy of prediction of the model are suggested.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/25012157','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/25012157"><span>High frequency of potential entrapment gaps in <span class="hlt">beds</span> in an acute hospital.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Haugh, Jennifer; O Flatharta, Tomás; Griffin, Tomás P; O'Keeffe, Shaun T</p> <p>2014-11-01</p> <p>dimensional guidelines for bedrails have been developed to minimise the risk of patient entrapment within the <span class="hlt">bed</span>. We examined whether bedrails in a large Irish teaching hospital complied with these standards. survey of 60 accessible <span class="hlt">beds</span> in six hospital wards. a specialised cone and cylinder tool that mimics the size and weight of a small adult neck and head was used to determine gaps in the four <span class="hlt">zones</span> most associated with entrapment. the number of failures for each <span class="hlt">zone</span> was 15 <span class="hlt">beds</span> for <span class="hlt">zone</span> 1 (any space between the perimeters of the rail); 42 <span class="hlt">beds</span> for <span class="hlt">zone</span> 2 (the space under the rail); 41 <span class="hlt">beds</span> for <span class="hlt">zone</span> 3 (the space between the inside surface of the bedrail and the mattress) and 13 <span class="hlt">beds</span> for <span class="hlt">zone</span> 4 (the space between the mattress and rail at the end of the rail). Failures were more common with hydraulic adjusted than with electric profiling <span class="hlt">beds</span>. Mattresses that were the wrong size (usually too narrow) or too soft and bedrails that were loose or were poorly maintained accounted for many failures. many <span class="hlt">beds</span> used in our hospital did not comply with dimensional standards to minimise entrapment risks. This emphasises the need for careful selection of patients for whom bedrails are to be used as well as the need for monitoring and maintenance of <span class="hlt">bed</span> systems. © The Author 2014. Published by Oxford University Press on behalf of the British Geriatrics Society. All rights reserved. For Permissions, please email: journals.permissions@oup.com.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2012EOSTr..93R.150B','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2012EOSTr..93R.150B"><span>River <span class="hlt">bed</span> transport measurements show <span class="hlt">bed</span> dilation and contraction</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Balcerak, Ernie</p> <p>2012-04-01</p> <p>A new study of <span class="hlt">bed</span> load transport—the movement of the gravel or other grains on a stream bed—has turned up a previously undetected effect. Marquis and Roy used several different methods to monitor <span class="hlt">bed</span> load activity in a gravel <span class="hlt">bed</span> river, Beard Creek in Quebec, Canada. They examined streamfow, <span class="hlt">bed</span> load, and <span class="hlt">bed</span> morphology before, during, and after 20 food events. The researchers found that two of the methods—measuring changes in <span class="hlt">bed</span> topography between successive foods and surveying <span class="hlt">bed</span> activity—gave inconsistent results. Changes in elevation of the <span class="hlt">bed</span> did not always correspond to movement of <span class="hlt">bed</span> load.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2016Geomo.273..374H','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2016Geomo.273..374H"><span>Cross-channel patterns of <span class="hlt">bed</span> material transport in a poorly sorted sand-<span class="hlt">bed</span> channel</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Haschenburger, J. K.</p> <p>2016-11-01</p> <p>Understanding of sediment transport comes largely from studies conducted on well-sorted sand-<span class="hlt">bed</span> and poorly sorted gravel-<span class="hlt">bed</span> channels. The aim of this study is to evaluate cross-channel patterns of transport rate and grain size in a poorly sorted sand-<span class="hlt">bed</span> channel. Transport observations were collected from the San Antonio River using a Helley-Smith sampler during flows from 0.02 to 1.1 times bankfull capacity. Resulting transport rates and grain size distributions were pooled to describe eight sections across a channel transect that includes the lower bank and compared to local boundary material. Maximum transport rates are concentrated in the central <span class="hlt">zone</span> of the streambed regardless of flow level, but gravels and coarse sands are conveyed preferentially on one side of the <span class="hlt">bed</span>. Grain size distributions change relatively little with flow and approximate the local <span class="hlt">bed</span> material supply. The size distributions associated with smaller transport rates near the channel margin become finer and more closely approximate the size characteristics of bank material at higher flows. Results extend patterns of differential routing of grain sizes to channel banks and establish the relative fluxes between the <span class="hlt">bed</span> and bank environments. The small gravel content in poorly sorted sand <span class="hlt">beds</span> requires further attention because it can contribute to cross-channel variation in sediment fluxes, limit the development of sandy bedforms, and influence the quality of streambed habitat.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/5516335','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/5516335"><span>Solar heated fluidized <span class="hlt">bed</span> gasification system</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Frosch, R.A.; Qader, S.A.</p> <p>1981-09-22</p> <p>This solar-heated gasification system avoids the problems inherent in other solar processes (such as blackened solar-input windows and overheated <span class="hlt">zones</span> on the reactor walls) by heating the fluidizing gas and steam in a solar-heat absorption <span class="hlt">zone</span> before they enter the reactor. Energy to heat the gas and steam concentrates in high-heat-capacity refractory honeycomb that surrounds the fluidized-<span class="hlt">bed</span> reactor <span class="hlt">zone</span>. Solar concentrators focus the solar energy on the honeycomb through a solar window. The reaction <span class="hlt">zone</span> is also heated directly and uniformly by thermal contact of the ceramic honeycomb with the walls of the reactor. The reactor handles such solids as coal and biomass.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/866638','DOE-PATENT-XML'); return false;" href="http://www.osti.gov/scitech/servlets/purl/866638"><span>Fluidized <span class="hlt">bed</span> calciner apparatus</span></a></p> <p><a target="_blank" href="http://www.osti.gov/doepatents">DOEpatents</a></p> <p>Owen, Thomas J.; Klem, Jr., Michael J.; Cash, Robert J.</p> <p>1988-01-01</p> <p>An apparatus for remotely calcining a slurry or solution feed stream of toxic or hazardous material, such as ammonium diurante slurry or uranyl nitrate solution, is disclosed. The calcining apparatus includes a vertical substantially cylindrical inner shell disposed in a vertical substantially cylindrical outer shell, in which inner shell is disposed a fluidized <span class="hlt">bed</span> comprising the feed stream material to be calcined and spherical beads to aid in heat transfer. Extending through the outer and inner shells is a feed nozzle for delivering feed material or a cleaning chemical to the beads. Disposed in and extending across the lower portion of the inner shell and upstream of the fluidized <span class="hlt">bed</span> is a support member for supporting the fluidized <span class="hlt">bed</span>, the support member having uniform slots for directing uniform gas flow to the fluidized <span class="hlt">bed</span> from a fluidizing gas orifice disposed upstream of the support member. Disposed in the lower portion of the inner shell are a plurality of internal electric resistance heaters for heating the fluidized <span class="hlt">bed</span>. Disposed circumferentially about the outside length of the inner shell are a plurality of external heaters for heating the inner shell thereby heating the fluidized <span class="hlt">bed</span>. Further, connected to the internal and external heaters is a means for maintaining the fluidized <span class="hlt">bed</span> temperature to within plus or minus approximately 25.degree. C. of a predetermined <span class="hlt">bed</span> temperature. Disposed about the external heaters is the outer shell for providing radiative heat reflection back to the inner shell.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/6475288','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/6475288"><span>Fluidized-<span class="hlt">bed</span> boilers</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Makansi, J.; Schwieger, B.</p> <p>1982-08-01</p> <p>This report reviews the current state of atmospheric fluidized-<span class="hlt">bed</span> combustion. The fundamentals of fluidized-<span class="hlt">bed</span> combustion and design considerations are first discussed. Tables provide details of manufacturers, worldwide, and of the boilers now installed. Eight plants in various countries and burning a variety of fuels, are described more fully.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.cdc.gov/parasites/bedbugs/faqs.html','NIH-MEDLINEPLUS'); return false;" href="https://www.cdc.gov/parasites/bedbugs/faqs.html"><span><span class="hlt">Bed</span> Bugs FAQs</span></a></p> <p><a target="_blank" href="http://medlineplus.gov/">MedlinePlus</a></p> <p></p> <p></p> <p>... allow them to fit into the smallest of spaces and stay there for long periods of time, even without a blood meal. <span class="hlt">Bed</span> bugs are usually transported from place to place as people travel. The <span class="hlt">bed</span> bugs travel in the seams and ...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/865942','DOE-PATENT-XML'); return false;" href="http://www.osti.gov/scitech/servlets/purl/865942"><span>Fluidized <span class="hlt">bed</span> gasification of extracted coal</span></a></p> <p><a target="_blank" href="http://www.osti.gov/doepatents">DOEpatents</a></p> <p>Aquino, Dolores C.; DaPrato, Philip L.; Gouker, Toby R.; Knoer, Peter</p> <p>1986-01-01</p> <p>Coal or similar carbonaceous solids are extracted by contacting the solids in an extraction <span class="hlt">zone</span> (12) with an aqueous solution having a pH above 12.0 at a temperature between 65.degree. C. and 110.degree. C. for a period of time sufficient to remove bitumens from the coal into said aqueous solution and the extracted solids are then gasified at an elevated pressure and temperature in a fluidized <span class="hlt">bed</span> gasification <span class="hlt">zone</span> (60) wherein the density of the fluidized <span class="hlt">bed</span> is maintained at a value above 160 kg/m.sup.3. In a preferred embodiment of the invention, water is removed from the aqueous solution in order to redeposit the extracted bitumens onto the solids prior to the gasification step.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/biblio/5725176','DOE-PATENT-XML'); return false;" href="http://www.osti.gov/scitech/biblio/5725176"><span>Fluidized <span class="hlt">bed</span> gasification of extracted coal</span></a></p> <p><a target="_blank" href="http://www.osti.gov/doepatents">DOEpatents</a></p> <p>Aquino, D.C.; DaPrato, P.L.; Gouker, T.R.; Knoer, P.</p> <p>1984-07-06</p> <p>Coal or similar carbonaceous solids are extracted by contacting the solids in an extraction <span class="hlt">zone</span> with an aqueous solution having a pH above 12.0 at a temperature between 65/sup 0/C and 110/sup 0/C for a period of time sufficient to remove bitumens from the coal into said aqueous solution, and the extracted solids are then gasified at an elevated pressure and temperature in a fluidized <span class="hlt">bed</span> gasification <span class="hlt">zone</span> (60) wherein the density of the fluidized <span class="hlt">bed</span> is maintained at a value above 160 kg/m/sup 3/. In a preferred embodiment of the invention, water is removed from the aqueous solution in order to redeposit the extracted bitumens onto the solids prior to the gasification step. 2 figs., 1 tab.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.fs.usda.gov/treesearch/pubs/7840','TREESEARCH'); return false;" href="https://www.fs.usda.gov/treesearch/pubs/7840"><span>Particle size variations between <span class="hlt">bed</span> load and <span class="hlt">bed</span> material in natural gravel <span class="hlt">bed</span> channels</span></a></p> <p><a target="_blank" href="http://www.fs.usda.gov/treesearch/">Treesearch</a></p> <p>Thomas E. Lisle</p> <p>1995-01-01</p> <p>Abstract - Particle sizes of <span class="hlt">bed</span> load and <span class="hlt">bed</span> material that represent materials transported and stored over a period of years are used to investigate selective transport in 13 previously sampled, natural gravel <span class="hlt">bed</span> channels. The ratio (D*) of median particle size of <span class="hlt">bed</span> material to the transport- and frequency-weighted mean of median <span class="hlt">bed</span> load size decreases to unity...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.epa.gov/bedbugs/how-find-bed-bugs','NIH-MEDLINEPLUS'); return false;" href="https://www.epa.gov/bedbugs/how-find-bed-bugs"><span>How to Find <span class="hlt">Bed</span> Bugs</span></a></p> <p><a target="_blank" href="http://medlineplus.gov/">MedlinePlus</a></p> <p></p> <p></p> <p>... or mattresses caused by <span class="hlt">bed</span> bugs being crushed. Dark spots (about this size: •), which are <span class="hlt">bed</span> bug ... to ensure sustained heat reaches the bugs no matter where they are hiding. Common <span class="hlt">bed</span> bugs are ...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://pubs.er.usgs.gov/publication/70185129','USGSPUBS'); return false;" href="http://pubs.er.usgs.gov/publication/70185129"><span>Modeling hyporheic <span class="hlt">zone</span> processes</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Runkel, Robert L.; McKnight, Diane M.; Rajaram, Harihar</p> <p>2003-01-01</p> <p>Stream biogeochemistry is influenced by the physical and chemical processes that occur in the surrounding watershed. These processes include the mass loading of solutes from terrestrial and atmospheric sources, the physical transport of solutes within the watershed, and the transformation of solutes due to biogeochemical reactions. Research over the last two decades has identified the hyporheic <span class="hlt">zone</span> as an important part of the stream system in which these processes occur. The hyporheic <span class="hlt">zone</span> may be loosely defined as the porous areas of the stream <span class="hlt">bed</span> and stream bank in which stream water mixes with shallow groundwater. Exchange of water and solutes between the stream proper and the hyporheic <span class="hlt">zone</span> has many biogeochemical implications, due to differences in the chemical composition of surface and groundwater. For example, surface waters are typically oxidized environments with relatively high dissolved oxygen concentrations. In contrast, reducing conditions are often present in groundwater systems leading to low dissolved oxygen concentrations. Further, microbial oxidation of organic materials in groundwater leads to supersaturated concentrations of dissolved carbon dioxide relative to the atmosphere. Differences in surface and groundwater pH and temperature are also common. The hyporheic <span class="hlt">zone</span> is therefore a mixing <span class="hlt">zone</span> in which there are gradients in the concentrations of dissolved gasses, the concentrations of oxidized and reduced species, pH, and temperature. These gradients lead to biogeochemical reactions that ultimately affect stream water quality. Due to the complexity of these natural systems, modeling techniques are frequently employed to quantify process dynamics.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2014EGUGA..1610571R','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2014EGUGA..1610571R"><span>Influence of the bank vegetation on the river <span class="hlt">bed</span> variations</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Ruei Ke, Bo; Chan, Hsun-Chuan; Chen, You-Cheng</p> <p>2014-05-01</p> <p>In the natural rivers, woody vegetation commonly grows along the riverbank. When flood flows run through the woody vegetation <span class="hlt">zones</span>, the stream processes are markedly affected. This study experimentally discusses the characteristics of flow fields and the changes of river bedform while water flows through woody vegetation <span class="hlt">zones</span>. The experiments were produced in a flume with 20m long, 1m wide, and a fixed slope of 0.001. The woody vegetation was set in 10 square centimeters at one side of the flume. Experimental vegetation was simulated by the steel columns due to the stem of emergent woody vegetation near <span class="hlt">bed</span> is rigid. The experimental flow was steady and flow velocity was adopted to near the critical flow for the initiation of sediment motion. Uniform sand with a median size of 0.88 mm was used as the <span class="hlt">bed</span> sediment. The three dimensional flow fields of time-averaged velocity distributions and turbulent characteristics were measured by an Acoustic Doppler Velocimeter(ADV). The <span class="hlt">bed</span> morphology of equilibrium scour condition was measured by a Laser Distance Meter. The interactions between water flows and river <span class="hlt">bed</span> with vegetation ware investigated by observing the scour and deposition processes around the vegetation <span class="hlt">zone</span>. In addition, the flow fields at flat <span class="hlt">bed</span> and equilibrium scour conditions are measured separately. Furthermore, the influence of vegetation density on the flow and bedform was investigated by using the present experiment. When the flows passed through the vegetation <span class="hlt">zones</span>, the approaching flow was retarded by the vegetation <span class="hlt">zone</span> along the vegetation-bank side and accelerated in the main channel. The flow velocities also reduced downstream of the vegetation <span class="hlt">zones</span> and the water depths dropped significantly in the streamwise direction. It was observed that the levels of the sediment deposition decreased at downstream of the vegetation <span class="hlt">zones</span> as the vegetation density increased. Near the vegetation <span class="hlt">zone</span>, the size of the scour hole increased as the</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.fs.usda.gov/treesearch/pubs/41405','TREESEARCH'); return false;" href="https://www.fs.usda.gov/treesearch/pubs/41405"><span><span class="hlt">Zone</span> lines</span></a></p> <p><a target="_blank" href="http://www.fs.usda.gov/treesearch/">Treesearch</a></p> <p>Kevin T. Smith</p> <p>2001-01-01</p> <p><span class="hlt">Zone</span> lines are narrow, usually dark markings formed in decaying wood. <span class="hlt">Zone</span> lines are found most frequently in advanced white rot of hardwoods, although they occasionally are associated both with brown rot and with softwoods.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.epa.gov/bedbugs/bed-bug-tips','PESTICIDES'); return false;" href="https://www.epa.gov/bedbugs/bed-bug-tips"><span><span class="hlt">Bed</span> Bug Tips</span></a></p> <p><a target="_blank" href="http://www.epa.gov/pesticides/search.htm">EPA Pesticide Factsheets</a></p> <p></p> <p></p> <p>How to deal with <span class="hlt">bed</span> bugs in one printable page. Ten tips include ensuring correct insect identification, reducing clutter, understand integrated pest management, using mattress and box spring encasements, and heat treatment.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://medlineplus.gov/ency/patientinstructions/000581.htm','NIH-MEDLINEPLUS'); return false;" href="https://medlineplus.gov/ency/patientinstructions/000581.htm"><span><span class="hlt">Bed</span> rest during pregnancy</span></a></p> <p><a target="_blank" href="http://medlineplus.gov/">MedlinePlus</a></p> <p></p> <p></p> <p>... pregnancy problems, including: High blood pressure Premature or preterm changes in the cervix Problems with the placenta ... shown that being on <span class="hlt">bed</span> rest can prevent preterm birth or other pregnancy problems. And some complications ...</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_3");'>3</a></li> <li><a href="#" onclick='return showDiv("page_4");'>4</a></li> <li class="active"><span>5</span></li> <li><a href="#" onclick='return showDiv("page_6");'>6</a></li> <li><a href="#" onclick='return showDiv("page_7");'>7</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_5 --> <div id="page_6" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_4");'>4</a></li> <li><a href="#" onclick='return showDiv("page_5");'>5</a></li> <li class="active"><span>6</span></li> <li><a href="#" onclick='return showDiv("page_7");'>7</a></li> <li><a href="#" onclick='return showDiv("page_8");'>8</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="101"> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.epa.gov/bedbugs/bed-bug-information-clearinghouse','PESTICIDES'); return false;" href="https://www.epa.gov/bedbugs/bed-bug-information-clearinghouse"><span><span class="hlt">Bed</span> Bug Information Clearinghouse</span></a></p> <p><a target="_blank" href="http://www.epa.gov/pesticides/search.htm">EPA Pesticide Factsheets</a></p> <p></p> <p></p> <p>Its purpose is to help states, communities, and consumers in efforts to prevent and control <span class="hlt">bed</span> bug infestations. Currently includes only reviewed material from federal/state/local government agencies, extension services, and universities.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/5907302','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/5907302"><span>Particle fuel <span class="hlt">bed</span> tests</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Horn, F.L.; Powell, J.R.; Savino, J.M.</p> <p>1985-01-01</p> <p>Gas-cooled reactors, using packed <span class="hlt">beds</span> of small diameter coated fuel particles have been proposed for compact, high-power systems. The particulate fuel used in the tests was 800 microns in diameter, consisting of a thoria kernel coated with 200 microns of pyrocarbon. Typically, the <span class="hlt">bed</span> of fuel particles was contained in a ceramic cylinder with porous metallic frits at each end. A dc voltage was applied to the metallic frits and the resulting electric current heated the <span class="hlt">bed</span>. Heat was removed by passing coolant (helium or hydrogen) through the <span class="hlt">bed</span>. Candidate frit materials, rhenium, nickel, zirconium carbide, and zirconium oxide were unaffected, while tungsten and tungsten-rhenium lost weight and strength. Zirconium-carbide particles were tested at 2000 K in H/sub 2/ for 12 hours with no visible reaction or weight loss.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/862873','DOE-PATENT-XML'); return false;" href="http://www.osti.gov/scitech/servlets/purl/862873"><span>Tapered <span class="hlt">bed</span> bioreactor</span></a></p> <p><a target="_blank" href="http://www.osti.gov/doepatents">DOEpatents</a></p> <p>Scott, Charles D.; Hancher, Charles W.</p> <p>1977-01-01</p> <p>A vertically oriented conically shaped column is used as a fluidized <span class="hlt">bed</span> bioreactor wherein biologically catalyzed reactions are conducted in a continuous manner. The column utilizes a packing material a support having attached thereto a biologically active catalytic material.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/162167','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/162167"><span>Moving-<span class="hlt">bed</span> sorbents</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Ayala, R.E.; Gupta, R.P.; Chuck, T.</p> <p>1995-12-01</p> <p>The objective of this program is to develop mixed-metal oxide sorbent formulations that are suitable for moving-<span class="hlt">bed</span>, high-temperature, desulfurization of coal gas. Work continues on zinc titanates formulations and Z-sorb III sorbent.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://medlineplus.gov/languages/bedbugs.html','NIH-MEDLINEPLUS'); return false;" href="https://medlineplus.gov/languages/bedbugs.html"><span><span class="hlt">Bed</span> Bugs - Multiple Languages</span></a></p> <p><a target="_blank" href="http://medlineplus.gov/">MedlinePlus</a></p> <p></p> <p></p> <p>... Supplements Videos & Tools You Are Here: Home → Multiple Languages → All Health Topics → <span class="hlt">Bed</span> Bugs URL of this page: https://medlineplus.gov/languages/bedbugs.html Other topics A-Z Expand Section ...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.fda.gov/ForConsumers/ConsumerUpdates/ucm164366.htm','NIH-MEDLINEPLUS'); return false;" href="https://www.fda.gov/ForConsumers/ConsumerUpdates/ucm164366.htm"><span>Practice Hospital <span class="hlt">Bed</span> Safety</span></a></p> <p><a target="_blank" href="http://medlineplus.gov/">MedlinePlus</a></p> <p></p> <p></p> <p>... 1, 1985 and January 1, 2013, FDA received reports of 901 incidents of patients caught, trapped, entangled, or strangled in ... Use Todd says there have been very few reports of safety incidents with hospital <span class="hlt">beds</span> used in private residences. "This ...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/1325826','DOE-PATENT-XML'); return false;" href="http://www.osti.gov/scitech/servlets/purl/1325826"><span>Simulated moving <span class="hlt">bed</span> system for CO.sub.2 separation, and method of same</span></a></p> <p><a target="_blank" href="http://www.osti.gov/doepatents">DOEpatents</a></p> <p>Elliott, Jeannine Elizabeth; Copeland, Robert James; Lind, Jeff; Leta, Daniel P.; McCall, Patrick P.</p> <p>2016-09-20</p> <p>A system and method for separating and/or purification of CO.sub.2 gas from a CO.sub.2 feed stream is described. The system and method include a plurality of fixed sorbent <span class="hlt">beds</span>, adsorption <span class="hlt">zones</span> and desorption <span class="hlt">zones</span>, where the sorbent <span class="hlt">beds</span> are connected via valve and lines to create a simulated moving <span class="hlt">bed</span> system, where the sorbent <span class="hlt">beds</span> move from one adsorption position to another adsorption position, and then into one regeneration position to another regeneration position, and optionally back to an adsorption position. The system and method operate by concentration swing adsorption/desorption and by adsorptive/desorptive displacement.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/20130011183','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/20130011183"><span>Deleterious Thermal Effects Due To Randomized Flow Paths in Pebble <span class="hlt">Bed</span>, and Particle <span class="hlt">Bed</span> Style Reactors</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Moran, Robert P.</p> <p>2013-01-01</p> <p>A review of literature associated with Pebble <span class="hlt">Bed</span> and Particle <span class="hlt">Bed</span> reactor core research has revealed a systemic problem inherent to reactor core concepts which utilize randomized rather than structured coolant channel flow paths. For both the Pebble <span class="hlt">Bed</span> and Particle <span class="hlt">Bed</span> Reactor designs; case studies reveal that for indeterminate reasons, regions within the core would suffer from excessive heating leading to thermal runaway and localized fuel melting. A thermal Computational Fluid Dynamics model was utilized to verify that In both the Pebble <span class="hlt">Bed</span> and Particle <span class="hlt">Bed</span> Reactor concepts randomized coolant channel pathways combined with localized high temperature regions would work together to resist the flow of coolant diverting it away from where it is needed the most to cooler less resistive pathways where it is needed the least. In other words given the choice via randomized coolant pathways the reactor coolant will take the path of least resistance, and hot <span class="hlt">zones</span> offer the highest resistance. Having identified the relationship between randomized coolant channel pathways and localized fuel melting it is now safe to assume that other reactor concepts that utilize randomized coolant pathways such as the foam core reactor are also susceptible to this phenomenon.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://ntrs.nasa.gov/search.jsp?R=19900000574&hterms=matijevic&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D20%26Ntt%3Dmatijevic','NASA-TRS'); return false;" href="https://ntrs.nasa.gov/search.jsp?R=19900000574&hterms=matijevic&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D20%26Ntt%3Dmatijevic"><span>Test <span class="hlt">Bed</span> For Telerobots</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Matijevic, Jacob R.; Zimmerman, Wayne F.; Dolinsky, Shlomo</p> <p>1990-01-01</p> <p>Assembly of electromechanical and electronic equipment (including computers) constitutes test <span class="hlt">bed</span> for development of advanced robotic systems for remote manipulation. Combines features not found in commercial systems. Its architecture allows easy growth in complexity and level of automation. System national resource for validation of new telerobotic technology. Intended primarily for robots used in outer space, test <span class="hlt">bed</span> adapted to development of advanced terrestrial telerobotic systems for handling radioactive materials, dangerous chemicals, and explosives.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/15532858','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/15532858"><span><span class="hlt">Bed</span> exit alarms.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p></p> <p>2004-09-01</p> <p><span class="hlt">Bed</span>-exit alarms alert caregivers that a patient who should not get out of <span class="hlt">bed</span> unassisted is doing so. These alarms can help reduce the likelihood of falls and can promote speedy assistance to patients who have already fallen. But as we described in our May 2004 Guidance Article on <span class="hlt">bed</span>-exit alarms, they don't themselves prevent falls. They are only effective if used as part of an overall fall-prevention program and with a clear understanding of their limitations. This Evaluation examines the effectiveness of 16 <span class="hlt">bed</span>-exit alarms from seven suppliers. Our ratings focus primarily on each product's reliability in detecting <span class="hlt">bed</span>-exit events and alerting caregivers, its ability to minimize nuisance alarms (alarms that sound even though the patient isn't leaving the <span class="hlt">bed</span> or that sound while a caregiver is helping the patient to leave the <span class="hlt">bed</span>), and its resistance to deliberate or inadvertent tampering. Twelve of the products use pressure-sensor-activated alarms (mainly sensor pads placed on or under the mattress); three use a cord that can attach to the patient's garment, alarming if the cord is pulled loose from the control unit; and one is a position-sensitive alarm attached to a leg cuff. All the products reliably detect attempted or successful <span class="hlt">bed</span> exits. But they vary greatly in how effectively they alert staff, minimize nuisance alarms, and resist tampering. Ease of use and battery performance also vary for many units. Of the pressure-sensor units, three are rated Preferred. Those units meet most of our criteria and have no significant disadvantages. Five of the other pressure-sensor products are Acceptable, and the remaining four are Not Recommended. All three cord-activated alarms are rated Acceptable, as is the patient-worn alarm.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2007AcAau..60..234S','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2007AcAau..60..234S"><span><span class="hlt">Bed</span> rest and immunity</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Sonnenfeld, Gerald; Aviles, Hernan; Butel, Janet S.; Shearer, William T.; Niesel, David; Pandya, Utpal; Allen, Christopher; Ochs, Hans D.; Blancher, Antoine; Abbal, Michel</p> <p>2007-02-01</p> <p>Space flight has been shown to result in altered immune responses. The current study was designed to investigate this possibility by using the <span class="hlt">bed</span> rest model of some space flight conditions. A large number of women are included as subjects in the study. The hypothesis being tested is: 60 days head-down tilt <span class="hlt">bed</span> rest of humans will affect the immune system and resistance to infection. Blood, urine and saliva samples will be obtained from <span class="hlt">bed</span> rest subjects prior to, at intervals during, and after completion of 60 days of head-down tilt <span class="hlt">bed</span> rest. Leukocyte blastogenesis, cytokine production and virus reactivation will be assessed. The ability of the subjects to respond appropriately to immunization with the neoantigen bacteriophage φX-174 will also be determined. <span class="hlt">Bed</span> rest is being carried out at MEDES, Toulouse France, and the University of Texas Medical Branch, Galveston, TX. The studies to be carried out in France will also allow assessment of the effects of muscle/bone exercise and nutritional countermeasures on the immune system in addition to the effects of <span class="hlt">bed</span> rest.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/26096382','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/26096382"><span>Temporal Hyporheic <span class="hlt">Zone</span> Response to Water Table Fluctuations.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Malzone, Jonathan M; Anseeuw, Sierra K; Lowry, Christopher S; Allen-King, Richelle</p> <p>2016-03-01</p> <p>Expansion and contraction of the hyporheic <span class="hlt">zone</span> due to temporal hydrologic changes between stream and riparian aquifer influence the biogeochemical cycling capacity of streams. Theoretical studies have quantified the control of groundwater discharge on the depth of the hyporheic <span class="hlt">zone</span>; however, observations of temporal groundwater controls are limited. In this study, we develop the concept of groundwater-dominated differential hyporheic <span class="hlt">zone</span> expansion to explain the temporal control of groundwater discharge on the hyporheic <span class="hlt">zone</span> in a third-order stream reach flowing through glacially derived terrain typical of the Great Lakes region. We define groundwater-dominated differential expansion of the hyporheic <span class="hlt">zone</span> as: differing rates and magnitudes of hyporheic <span class="hlt">zone</span> expansion in response to seasonal vs. storm-related water table fluctuation. Specific conductance and vertical hydraulic gradient measurements were used to map changes in the hyporheic <span class="hlt">zone</span> during seasonal water table decline and storm events. Planar and riffle <span class="hlt">beds</span> were monitored in order to distinguish the cause of increasing hyporheic <span class="hlt">zone</span> depth. Planar <span class="hlt">bed</span> seasonal expansion of the hyporheic <span class="hlt">zone</span> was of a greater magnitude and longer in duration (weeks to months) than storm event expansion (hours to days). In contrast, the hyporheic <span class="hlt">zone</span> beneath the riffle <span class="hlt">bed</span> exhibited minimal expansion in response to seasonal groundwater decline compared to storm related expansion. Results indicated that fluctuation in the riparian water table controlled seasonal expansion of the hyporheic <span class="hlt">zone</span> along the planar <span class="hlt">bed</span>. This groundwater induced hyporheic <span class="hlt">zone</span> expansion could increase the potential for biogeochemical cycling and natural attenuation.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/940058','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/940058"><span>Pebble <span class="hlt">Bed</span> Reactor Dust Production Model</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Abderrafi M. Ougouag; Joshua J. Cogliati</p> <p>2008-09-01</p> <p>The operation of pebble <span class="hlt">bed</span> reactors, including fuel circulation, can generate graphite dust, which in turn could be a concern for internal components; and to the near field in the remote event of a break in the coolant circuits. The design of the reactor system must, therefore, take the dust into account and the operation must include contingencies for dust removal and for mitigation of potential releases. Such planning requires a proper assessment of the dust inventory. This paper presents a predictive model of dust generation in an operating pebble <span class="hlt">bed</span> with recirculating fuel. In this preliminary work the production model is based on the use of the assumption of proportionality between the dust production and the normal force and distance traveled. The model developed in this work uses the slip distances and the inter-pebble forces computed by the authors’ PEBBLES. The code, based on the discrete element method, simulates the relevant static and kinetic friction interactions between the pebbles as well as the recirculation of the pebbles through the reactor vessel. The interaction between pebbles and walls of the reactor vat is treated using the same approach. The amount of dust produced is proportional to the wear coefficient for adhesive wear (taken from literature) and to the slip volume, the product of the contact area and the slip distance. The paper will compare the predicted volume with the measured production rates. The simulation tallies the dust production based on the location of creation. Two peak production <span class="hlt">zones</span> from intra pebble forces are predicted within the <span class="hlt">bed</span>. The first <span class="hlt">zone</span> is located near the pebble inlet chute due to the speed of the dropping pebbles. The second peak <span class="hlt">zone</span> occurs lower in the reactor with increased pebble contact force due to the weight of supported pebbles. This paper presents the first use of a Discrete Element Method simulation of pebble <span class="hlt">bed</span> dust production.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/biblio/5385261','DOE-PATENT-XML'); return false;" href="http://www.osti.gov/scitech/biblio/5385261"><span>Fluidized-<span class="hlt">bed</span> catalytic coal-gasification process. [US patent; pretreatment to minimize agglomeration</span></a></p> <p><a target="_blank" href="http://www.osti.gov/doepatents">DOEpatents</a></p> <p>Euker, C.A. Jr.; Wesselhoft, R.D.; Dunkleman, J.J.; Aquino, D.C.; Gouker, T.R.</p> <p>1981-09-14</p> <p>Coal or similar carbonaceous solids impregnated with gasification catalyst constituents are oxidized by contact with a gas containing between 2 vol % and 21 vol % oxygen at a temperature between 50 and 250/sup 0/C in an oxidation <span class="hlt">zone</span> and the resultant oxidized, catalyst impregnated solids are then gasified in a fluidized <span class="hlt">bed</span> gasification <span class="hlt">zone</span> at an elevated pressure. The oxidation of the catalyst impregnated solids under these conditions insures that the <span class="hlt">bed</span> density in the fluidized <span class="hlt">bed</span> gasification <span class="hlt">zone</span> will be relatively high even though the solids are gasified at elevated pressure and temperature.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/863896','DOE-PATENT-XML'); return false;" href="http://www.osti.gov/scitech/servlets/purl/863896"><span>Coal-feeding mechanism for a fluidized <span class="hlt">bed</span> combustion chamber</span></a></p> <p><a target="_blank" href="http://www.osti.gov/doepatents">DOEpatents</a></p> <p>Gall, Robert L.</p> <p>1981-01-01</p> <p>The present invention is directed to a fuel-feeding mechanism for a fluidized <span class="hlt">bed</span> combustor. In accordance with the present invention a perforated conveyor belt is utilized in place of the fixed grid normally disposed at the lower end of the fluidized <span class="hlt">bed</span> combustion <span class="hlt">zone</span>. The conveyor belt is fed with fuel, e.g. coal, at one end thereof so that the air passing through the perforations dislodges the coal from the belt and feeds the coal into the fluidized <span class="hlt">zone</span> in a substantially uniform manner.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/6050121','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/6050121"><span>Coal-feeding mechanism for a fluidized <span class="hlt">bed</span> combustion chamber</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Gall, R. L.</p> <p>1981-06-02</p> <p>The present invention is directed to a fuel-feeding mechanism for a fluidized <span class="hlt">bed</span> combustor. In accordance with the present invention a perforated conveyor belt is utilized in place of the fixed grid normally disposed at the lower end of the fluidized <span class="hlt">bed</span> combustion <span class="hlt">zone</span>. The conveyor belt is fed with fuel, E.G. Coal, at one end thereof so that the air passing through the perforations dislodges the coal from the belt and feeds the coal into the fluidized <span class="hlt">zone</span> in a substantially uniform manner.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/864802','DOE-PATENT-XML'); return false;" href="http://www.osti.gov/scitech/servlets/purl/864802"><span>Control of <span class="hlt">bed</span> height in a fluidized <span class="hlt">bed</span> gasification system</span></a></p> <p><a target="_blank" href="http://www.osti.gov/doepatents">DOEpatents</a></p> <p>Mehta, Gautam I.; Rogers, Lynn M.</p> <p>1983-12-20</p> <p>In a fluidized <span class="hlt">bed</span> apparatus a method for controlling the height of the fdized <span class="hlt">bed</span>, taking into account variations in the density of the <span class="hlt">bed</span>. The method comprises taking simultaneous differential pressure measurements at different vertical elevations within the vessel, averaging the differential pressures, determining an average fluidized <span class="hlt">bed</span> density, then periodically calculating a weighting factor. The weighting factor is used in the determination of the actual <span class="hlt">bed</span> height which is used in controlling the fluidizing means.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/25160159','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/25160159"><span>Cross hospital <span class="hlt">bed</span> management system.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Abedian, S; Kazemi, H; Riazi, H; Bitaraf, E</p> <p>2014-01-01</p> <p>The lack of adequate numbers of hospital <span class="hlt">beds</span> to accommodate the injured is a main problem in public hospitals. For control of occupancy of <span class="hlt">bed</span>, we design a dynamic system that announces status of <span class="hlt">bed</span> when it change with admission or discharge of a patient. This system provide a wide network in country for <span class="hlt">bed</span> management, especially for ICU and CCU <span class="hlt">beds</span> that help us to distribute injured patient in the hospitals.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://ntrs.nasa.gov/search.jsp?R=19880033919&hterms=fouling&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D70%26Ntt%3Dfouling','NASA-TRS'); return false;" href="https://ntrs.nasa.gov/search.jsp?R=19880033919&hterms=fouling&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D70%26Ntt%3Dfouling"><span>Treatment <span class="hlt">bed</span> microbiological control</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Janauer, Gilbert E.; Fitzpatrick, Timothy W.; Kril, Michael B.; Wilber, Georgia A.; Sauer, Richard L.</p> <p>1987-01-01</p> <p>The effects of microbial fouling on treatment <span class="hlt">bed</span> (TB) performance are being studied. Fouling of activated carbon (AC) and ion exchange resins (IEX) by live and devitalized bacteria can cause decreased capacity for selected sorbates with AC and IEX TB. More data are needed on organic species removal in the trace region of solute sorption isotherms. TB colonization was prevented by nonclassical chemical disinfectant compositions (quaternary ammonium resins) applied in suitable configurations. Recently, the protection of carbon <span class="hlt">beds</span> via direct disinfectant impregnation has shown promise. Effects (of impregnation) upon <span class="hlt">bed</span> sorption/removal characteristics are to be studied with representative contaminants. The potential need to remove solutes added or produced during water disinfection and/or TB microbiological control must be investigated.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://ntrs.nasa.gov/search.jsp?R=19880033919&hterms=papers+bacteria&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D30%26Ntt%3Dpapers%2Bbacteria','NASA-TRS'); return false;" href="https://ntrs.nasa.gov/search.jsp?R=19880033919&hterms=papers+bacteria&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D30%26Ntt%3Dpapers%2Bbacteria"><span>Treatment <span class="hlt">bed</span> microbiological control</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Janauer, Gilbert E.; Fitzpatrick, Timothy W.; Kril, Michael B.; Wilber, Georgia A.; Sauer, Richard L.</p> <p>1987-01-01</p> <p>The effects of microbial fouling on treatment <span class="hlt">bed</span> (TB) performance are being studied. Fouling of activated carbon (AC) and ion exchange resins (IEX) by live and devitalized bacteria can cause decreased capacity for selected sorbates with AC and IEX TB. More data are needed on organic species removal in the trace region of solute sorption isotherms. TB colonization was prevented by nonclassical chemical disinfectant compositions (quaternary ammonium resins) applied in suitable configurations. Recently, the protection of carbon <span class="hlt">beds</span> via direct disinfectant impregnation has shown promise. Effects (of impregnation) upon <span class="hlt">bed</span> sorption/removal characteristics are to be studied with representative contaminants. The potential need to remove solutes added or produced during water disinfection and/or TB microbiological control must be investigated.</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_4");'>4</a></li> <li><a href="#" onclick='return showDiv("page_5");'>5</a></li> <li class="active"><span>6</span></li> <li><a href="#" onclick='return showDiv("page_7");'>7</a></li> <li><a href="#" onclick='return showDiv("page_8");'>8</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_6 --> <div id="page_7" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_5");'>5</a></li> <li><a href="#" onclick='return showDiv("page_6");'>6</a></li> <li class="active"><span>7</span></li> <li><a href="#" onclick='return showDiv("page_8");'>8</a></li> <li><a href="#" onclick='return showDiv("page_9");'>9</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="121"> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19830026793','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19830026793"><span>Fluidized <span class="hlt">bed</span> coal desulfurization</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Ravindram, M.</p> <p>1983-01-01</p> <p>Laboratory scale experiments were conducted on two high volatile bituminous coals in a bench scale batch fluidized <span class="hlt">bed</span> reactor. Chemical pretreatment and posttreatment of coals were tried as a means of enhancing desulfurization. Sequential chlorination and dechlorination cum hydrodesulfurization under modest conditions relative to the water slurry process were found to result in substantial sulfur reductions of about 80%. Sulfur forms as well as proximate and ultimate analyses of the processed coals are included. These studies indicate that a fluidized <span class="hlt">bed</span> reactor process has considerable potential for being developed into a simple and economic process for coal desulfurization.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/biblio/6929142','DOE-PATENT-XML'); return false;" href="http://www.osti.gov/scitech/biblio/6929142"><span>Staged fluidized <span class="hlt">bed</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/doepatents">DOEpatents</a></p> <p>Mallon, R.G.</p> <p>1983-05-13</p> <p>The invention relates to oil shale retorting and more particularly to staged fluidized <span class="hlt">bed</span> oil shale retorting. Method and apparatus are disclosed for narrowing the distribution of residence times of any size particle and equalizing the residence times of large and small particles in fluidized <span class="hlt">beds</span>. Particles are moved up one fluidized column and down a second fluidized column with the relative heights selected to equalize residence times of large and small particles. Additional pairs of columns are staged to narrow the distribution of residence times and provide complete processing of the material.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=5371163','PMC'); return false;" href="https://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=5371163"><span>The Safety of Hospital <span class="hlt">Beds</span></span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pmc">PubMed Central</a></p> <p>Gervais, Pierre; Pooler, Charlotte; Merryweather, Andrew; Doig, Alexa K.; Bloswick, Donald</p> <p>2015-01-01</p> <p>To explore the safety of the standard and the low hospital <span class="hlt">bed</span>, we report on a microanalysis of 15 patients’ ability to ingress, move about the <span class="hlt">bed</span>, and egress. The 15 participants were purposefully selected with various disabilities. <span class="hlt">Bed</span> conditions were randomized with side rails up or down and one low <span class="hlt">bed</span> with side rails down. We explored the patients’ use of the side rails, <span class="hlt">bed</span> height, ability to lift their legs onto the mattress, and ability to turn, egress, and walk back to the chair. The standard <span class="hlt">bed</span> was too high for some participants, both for ingress and egress. Side rails were used by most participants when entering, turning in <span class="hlt">bed</span>, and exiting. We recommend that side rails be reconsidered as a means to facilitate in-<span class="hlt">bed</span> movement, ingress, and egress. Furthermore, single deck height settings for all patients are not optimal. Low <span class="hlt">beds</span> as a safety measure must be re-evaluated. PMID:28462302</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/5817816','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/5817816"><span>Studies in a moving <span class="hlt">bed</span> pressure gasifier</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Krishnudu, T.; Madhusudhan, B.; Reddy, S.N.; Sastry, V.S.R.; Rao, K.S.; Vaidyeswaran, R.</p> <p>1989-04-01</p> <p>Sequential layer samples were collected from a moving <span class="hlt">bed</span> pressure gasification pilot plant operating at 2.0 MPa after it was quenched by cutting off the supply of oxygen and steam, and the samples were then analyzed. The studies were made with two low-rank coals. Based on the proximate and ultimate analyses and Gray-King assay, three <span class="hlt">zones</span> - fast devolatilization, slow devolatilization with gasification, and gasification - could be indicated in the gasifier. From a correlation obtained earlier between volatile matter content in the char and the temperature of low-temperature carbonization in a Lurgi Spuelgas type of reactor, the temperature profile in the gasifier was predicted using the volatile matter content in the sequential layer samples. About two-thirds of the total fuel <span class="hlt">bed</span> height of 3500 mm was for fast and slow devolatilizations and the rest for gasification.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://pubs.er.usgs.gov/publication/70028332','USGSPUBS'); return false;" href="http://pubs.er.usgs.gov/publication/70028332"><span>Acoustic <span class="hlt">bed</span> velocity and <span class="hlt">bed</span> load dynamics in a large sand <span class="hlt">bed</span> river</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Gaeuman, D.; Jacobson, R.B.</p> <p>2006-01-01</p> <p>Development of a practical technology for rapid quantification of <span class="hlt">bed</span> load transport in large rivers would represent a revolutionary advance for sediment monitoring and the investigation of fluvial dynamics. Measurement of <span class="hlt">bed</span> load motion with acoustic Doppler current profiles (ADCPs) has emerged as a promising approach for evaluating <span class="hlt">bed</span> load transport. However, a better understanding of how ADCP data relate to conditions near the stream <span class="hlt">bed</span> is necessary to make the method practical for quantitative applications. In this paper, we discuss the response of ADCP <span class="hlt">bed</span> velocity measurements, defined as the near-<span class="hlt">bed</span> sediment velocity detected by the instrument's bottom-tracking feature, to changing sediment-transporting conditions in the lower Missouri River. <span class="hlt">Bed</span> velocity represents a weighted average of backscatter from moving <span class="hlt">bed</span> load particles and spectral reflections from the immobile <span class="hlt">bed</span>. The ratio of <span class="hlt">bed</span> velocity to mean <span class="hlt">bed</span> load particle velocity depends on the concentration of the particles moving in the <span class="hlt">bed</span> load layer, the <span class="hlt">bed</span> load layer thickness, and the backscatter strength from a unit area of moving particles relative to the echo strength from a unit area of unobstructed <span class="hlt">bed</span>. A model based on existing <span class="hlt">bed</span> load transport theory predicted measured <span class="hlt">bed</span> velocities from hydraulic and grain size measurements with reasonable success. <span class="hlt">Bed</span> velocities become more variable and increase more rapidly with shear stress when the transport stage, defined as the ratio of skin friction to the critical shear stress for particle entrainment, exceeds a threshold of about 17. This transition in <span class="hlt">bed</span> velocity response appears to be associated with the appearance of longer, flatter <span class="hlt">bed</span> forms at high transport stages.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/7171734','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/7171734"><span>Distributor for multistage fluidized <span class="hlt">beds</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Wormser, A.</p> <p>1992-06-16</p> <p>This patent describes a multibed fluidized <span class="hlt">bed</span> system. It comprises a fluidized <span class="hlt">bed</span> vessel having a casing surrounding a first distributor and a second distributor downstream from the first distributor; a first <span class="hlt">bed</span> material placed on the first distributor and a second <span class="hlt">bed</span> material placed on the second distributor; each of the <span class="hlt">bed</span> materials having an angle of repose; and wherein the angle formed by the substantially straight elongated tubular passages and the upper surface is less than the angle of repose of the second <span class="hlt">bed</span> material.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/869456','DOE-PATENT-XML'); return false;" href="http://www.osti.gov/scitech/servlets/purl/869456"><span>Fluid <span class="hlt">bed</span> material transfer method</span></a></p> <p><a target="_blank" href="http://www.osti.gov/doepatents">DOEpatents</a></p> <p>Pinske, Jr., Edward E.</p> <p>1994-01-01</p> <p>A fluidized <span class="hlt">bed</span> apparatus comprising a pair of separated fluid <span class="hlt">bed</span> enclosures, each enclosing a fluid <span class="hlt">bed</span> carried on an air distributor plate supplied with fluidizing air from below the plate. At least one equalizing duct extending through sidewalls of both fluid <span class="hlt">bed</span> enclosures and flexibly engaged therewith to communicate the fluid <span class="hlt">beds</span> with each other. The equalizing duct being surrounded by insulation which is in turn encased by an outer duct having expansion means and being fixed between the sidewalls of the fluid <span class="hlt">bed</span> enclosures.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/biblio/7260369','DOE-PATENT-XML'); return false;" href="http://www.osti.gov/scitech/biblio/7260369"><span>Apparatus for controlling fluidized <span class="hlt">beds</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/doepatents">DOEpatents</a></p> <p>Rehmat, A.G.; Patel, J.G.</p> <p>1987-05-12</p> <p>An apparatus and process are disclosed for control and maintenance of fluidized <span class="hlt">beds</span> under non-steady state conditions. An ash removal conduit is provided for removing solid particulates from a fluidized <span class="hlt">bed</span> separate from an ash discharge conduit in the lower portion of the grate supporting such a <span class="hlt">bed</span>. The apparatus and process of this invention is particularly suitable for use in ash agglomerating fluidized <span class="hlt">beds</span> and provides control of the fluidized <span class="hlt">bed</span> before ash agglomeration is initiated and during upset conditions resulting in stable, sinter-free fluidized <span class="hlt">bed</span> maintenance. 2 figs.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/866246','DOE-PATENT-XML'); return false;" href="http://www.osti.gov/scitech/servlets/purl/866246"><span>Apparatus for controlling fluidized <span class="hlt">beds</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/doepatents">DOEpatents</a></p> <p>Rehmat, Amirali G.; Patel, Jitendra G.</p> <p>1987-05-12</p> <p>An apparatus and process for control and maintenance of fluidized <span class="hlt">beds</span> under non-steady state conditions. An ash removal conduit is provided for removing solid particulates from a fluidized <span class="hlt">bed</span> separate from an ash discharge conduit in the lower portion of the grate supporting such a <span class="hlt">bed</span>. The apparatus and process of this invention is particularly suitable for use in ash agglomerating fluidized <span class="hlt">beds</span> and provides control of the fluidized <span class="hlt">bed</span> before ash agglomeration is initiated and during upset conditions resulting in stable, sinter-free fluidized <span class="hlt">bed</span> maintenance.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/6568217','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/6568217"><span>Palynological studies of Middle Pennsylvanian coal <span class="hlt">beds</span> of the proposed Pennsylvania System stratotype in West Virginia</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Kosanke, R.M.</p> <p>1988-01-01</p> <p>One hundred and ninety-one segment samples from 27 coal <span class="hlt">beds</span> and adjacent strata occurring in the Kanawha Formation and Charleston Sandstone have been collected and examined in detail. More than 25,000 palynomorphs have been counted in order to establish a standard for the stratotype. Palynomorph abundance, assemblages, range <span class="hlt">zones</span>, and correlations are documented. Paleoecology, as evidenced by succession of salynomorphs within coal <span class="hlt">beds</span> and extinctions between coal <span class="hlt">beds</span>, is reported.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.epa.gov/bedbugs/bed-bug-myths','PESTICIDES'); return false;" href="https://www.epa.gov/bedbugs/bed-bug-myths"><span><span class="hlt">Bed</span> Bug Myths</span></a></p> <p><a target="_blank" href="http://www.epa.gov/pesticides/search.htm">EPA Pesticide Factsheets</a></p> <p></p> <p></p> <p>Learn the truth about <span class="hlt">bed</span> bugs, such as how easy they are to see with the naked eye, their preferred habitat, whether they transmit diseases, their public health effects, and whether pesticides are the best way to deal with an infestation.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/biblio/4182012','DOE-PATENT-XML'); return false;" href="http://www.osti.gov/scitech/biblio/4182012"><span>MULTISTAGE FLUIDIZED <span class="hlt">BED</span> REACTOR</span></a></p> <p><a target="_blank" href="http://www.osti.gov/doepatents">DOEpatents</a></p> <p>Jonke, A.A.; Graae, J.E.A.; Levitz, N.M.</p> <p>1959-11-01</p> <p>A multistage fluidized <span class="hlt">bed</span> reactor is described in which each of a number of stages is arranged with respect to an associated baffle so that a fluidizing gas flows upward and a granular solid downward through the stages and baffles, whereas the granular solid stopsflowing downward when the flow of fluidizing gas is shut off.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/20050207557','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/20050207557"><span>Deep Space Test <span class="hlt">Bed</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Milton, Martha E.</p> <p>2005-01-01</p> <p>This viewgraph presentation describes the Deep Space Test <span class="hlt">Bed</span> (DSTB), a balloon-borne device which can expose multiple payloads to the interplanetary Galactic Cosmic Ray environment on high altitude polar balloon flights. The DSTB is carried by National Scientific Balloon Facility (NSBF) Long Duration Balloons on polar flights so that its balloon-borne experiments can avoid geomagnetic cut-offs.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/864695','DOE-PATENT-XML'); return false;" href="http://www.osti.gov/scitech/servlets/purl/864695"><span>Coal hydrogenation and deashing in ebullated <span class="hlt">bed</span> catalytic reactor</span></a></p> <p><a target="_blank" href="http://www.osti.gov/doepatents">DOEpatents</a></p> <p>Huibers, Derk T. A.; Johanson, Edwin S.</p> <p>1983-01-01</p> <p>An improved process for hydrogenation of coal containing ash with agglomeration and removal of ash from an ebullated <span class="hlt">bed</span> catalytic reactor to produce deashed hydrocarbon liquid and gas products. In the process, a flowable coal-oil slurry is reacted with hydrogen in an ebullated catalyst <span class="hlt">bed</span> reaction <span class="hlt">zone</span> at elevated temperature and pressure conditions. The upward velocity and viscosity of the reactor liquid are controlled so that a substantial portion of the ash released from the coal is agglomerated to form larger particles in the upper portion of the reactor above the catalyst <span class="hlt">bed</span>, from which the agglomerated ash is separately withdrawn along with adhering reaction <span class="hlt">zone</span> liquid. The resulting hydrogenated hydrocarbon effluent material product is phase separated to remove vapor fractions, after which any ash remaining in the liquid fraction can be removed to produce substantially ash-free coal-derived liquid products.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.fs.usda.gov/treesearch/pubs/7861','TREESEARCH'); return false;" href="https://www.fs.usda.gov/treesearch/pubs/7861"><span>Fine <span class="hlt">bed</span> material in pools of natural gravel <span class="hlt">bed</span> channels</span></a></p> <p><a target="_blank" href="http://www.fs.usda.gov/treesearch/">Treesearch</a></p> <p>Thomas E. Lisle; Sue Hilton</p> <p>1999-01-01</p> <p>Abstract - Natural gravel <span class="hlt">bed</span> channels commonly contain a fine mode of sand and fine gravel that fills voids of the <span class="hlt">bed</span> framework of coarser gravel. If the supply of fine <span class="hlt">bed</span> material exceeds the storage capacity of framework voids, excess fine material forms surficial patches, which can be voluminous in pools during low flow. Data collected in 34 natural channels in...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.fs.usda.gov/treesearch/pubs/33571','TREESEARCH'); return false;" href="https://www.fs.usda.gov/treesearch/pubs/33571"><span><span class="hlt">Bed</span> load transport in gravel-<span class="hlt">bed</span> rivers</span></a></p> <p><a target="_blank" href="http://www.fs.usda.gov/treesearch/">Treesearch</a></p> <p>Jeffrey J. Barry</p> <p>2007-01-01</p> <p><span class="hlt">Bed</span> load transport is a fundamental physical process in alluvial rivers, building and maintaining a channel geometry that reflects both the quantity and timing of water and the volume and caliber of sediment delivered from the watershed. A variety of formulae have been developed to predict <span class="hlt">bed</span> load transport in gravel-<span class="hlt">bed</span> rivers, but testing of the equations in natural...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.epa.gov/bedbugs/bed-bug-clearinghouse-topic','PESTICIDES'); return false;" href="https://www.epa.gov/bedbugs/bed-bug-clearinghouse-topic"><span><span class="hlt">Bed</span> Bug Clearinghouse by Topic</span></a></p> <p><a target="_blank" href="http://www.epa.gov/pesticides/search.htm">EPA Pesticide Factsheets</a></p> <p></p> <p></p> <p>This information is intended to help states, communities, and consumers prevent and control <span class="hlt">bed</span> bug infestations. Topics include <span class="hlt">bed</span> bug biology and behavior, detection and monitoring, non-chemical techniques such as heat treatment, and pesticides.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2005JGRF..110.2007C','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2005JGRF..110.2007C"><span>Debris-<span class="hlt">bed</span> friction of hard-<span class="hlt">bedded</span> glaciers</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Cohen, D.; Iverson, N. R.; Hooyer, T. S.; Fischer, U. H.; Jackson, M.; Moore, P. L.</p> <p>2005-06-01</p> <p>Field measurements of debris-<span class="hlt">bed</span> friction on a smooth rock tablet at the <span class="hlt">bed</span> of Engabreen, a hard-<span class="hlt">bedded</span>, temperate glacier in northern Norway, indicated that basal ice containing 10% debris by volume exerted local shear traction of up to 500 kPa. The corresponding bulk friction coefficient between the dirty basal ice and the tablet was between 0.05 and 0.08. A model of friction in which nonrotating spherical rock particles are held in frictional contact with the <span class="hlt">bed</span> by <span class="hlt">bed</span>-normal ice flow can account for these measurements if the power law exponent for ice flowing past large clasts is 1. A small exponent (n < 2) is likely because stresses in ice are small and flow is transient. Numerical calculations of the <span class="hlt">bed</span>-normal drag force on a sphere in contact with a flat <span class="hlt">bed</span> using n = 1 show that this force can reach values several hundred times that on a sphere isolated from the <span class="hlt">bed</span>, thus drastically increasing frictional resistance. Various estimates of basal friction are obtained from this model. For example, the shear traction at the <span class="hlt">bed</span> of a glacier sliding at 20 m a-1 with a geothermally induced melt rate of 0.006 m a-1 and an effective pressure of 300 kPa can exceed 100 kPa. Debris-<span class="hlt">bed</span> friction can therefore be a major component of sliding resistance, contradicting the common assumption that debris-<span class="hlt">bed</span> friction is negligible.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2004AGUFM.C34A..03C','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2004AGUFM.C34A..03C"><span>Debris-<span class="hlt">Bed</span> Friction of Hard-<span class="hlt">Bedded</span> Glaciers</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Cohen, D.; Iverson, N. R.; Hooyer, T. S.; Fischer, U. H.; Jackson, M.; Moore, P. L.</p> <p>2004-12-01</p> <p>Field measurements of debris-<span class="hlt">bed</span> friction on a smooth rock tablet at the <span class="hlt">bed</span> of Engabreen, a hard-<span class="hlt">bedded</span>, temperate glacier in northern Norway, indicated that basal ice containing 10% debris by volume exerted local shear traction of up to 500~kPa. The corresponding bulk friction coefficient between the dirty basal ice and the tablet was between 0.05 and 0.08. A model of friction in which non-rotating spherical rock particles are held in frictional contact with the <span class="hlt">bed</span> by <span class="hlt">bed</span>-normal ice flow can account for these measurements if ice is Newtonian. Numerical calculations of the <span class="hlt">bed</span>-normal drag force on a sphere in contact with a flat <span class="hlt">bed</span> show that this force can reach values several hundred times that on a sphere isolated from the <span class="hlt">bed</span>, thus drastically increasing frictional resistance. Various estimates of basal friction are obtained from this model. For example, the shear traction at the <span class="hlt">bed</span> of a 200~m thick glacier sliding at 20~m a-1 with a geothermally induced melt rate of 0.006~m a-1 can exceed 100~kPa. Debris-<span class="hlt">bed</span> friction can, therefore, be a major component of sliding resistance, contradicting the common assumption that debris-<span class="hlt">bed</span> friction is negligible.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/6325839','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/6325839"><span>Fluidized-<span class="hlt">bed</span> combustion</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Botros, P E</p> <p>1990-04-01</p> <p>This report describes the activities of the Morgantown Energy Technology Center's research and development program in fluidized-<span class="hlt">bed</span> combustion from October 1, 1987, to September 30, 1989. The Department of Energy program involves atmospheric and pressurized systems. Demonstrations of industrial-scale atmospheric systems are being completed, and smaller boilers are being explored. These systems include vortex, multi-solid, spouted, dual-sided, air-cooled, pulsed, and waste-fired fluidized-<span class="hlt">beds</span>. Combustion of low-rank coal, components, and erosion are being studied. In pressurized combustion, first-generation, combined-cycle power plants are being tested, and second-generation, advanced-cycle systems are being designed and cost evaluated. Research in coal devolatilization, metal wastage, tube corrosion, and fluidization also supports this area. 52 refs., 24 figs., 3 tabs.</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_5");'>5</a></li> <li><a href="#" onclick='return showDiv("page_6");'>6</a></li> <li class="active"><span>7</span></li> <li><a href="#" onclick='return showDiv("page_8");'>8</a></li> <li><a href="#" onclick='return showDiv("page_9");'>9</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_7 --> <div id="page_8" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_6");'>6</a></li> <li><a href="#" onclick='return showDiv("page_7");'>7</a></li> <li class="active"><span>8</span></li> <li><a href="#" onclick='return showDiv("page_9");'>9</a></li> <li><a href="#" onclick='return showDiv("page_10");'>10</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="141"> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19800016271','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19800016271"><span>Test <span class="hlt">bed</span> concentrator mirrors</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Argoud, M. J.</p> <p>1980-01-01</p> <p>The test <span class="hlt">bed</span> concentrator (TBC) was des point focusing distributed receiver (PFDR) systems. The reflective surface of the concentrator was fabricated using mirror facet designs and techniques. The facets are made by bonding mirrored glass to spherically-conducted substrates. Several aspects of earlier work were reevaluated for application to the TBC: optimum glass block size, material selection, environmental test, optical characteristics, and reliability. A detailed explanation of tooling, substrate preparation, testing techniques, and mirror assembly is presented.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/1980fsdr.proc...41A','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/1980fsdr.proc...41A"><span>Test <span class="hlt">bed</span> concentrator mirrors</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Argoud, M. J.</p> <p>1980-05-01</p> <p>The test <span class="hlt">bed</span> concentrator (TBC) was des point focusing distributed receiver (PFDR) systems. The reflective surface of the concentrator was fabricated using mirror facet designs and techniques. The facets are made by bonding mirrored glass to spherically-conducted substrates. Several aspects of earlier work were reevaluated for application to the TBC: optimum glass block size, material selection, environmental test, optical characteristics, and reliability. A detailed explanation of tooling, substrate preparation, testing techniques, and mirror assembly is presented.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/5873026','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/5873026"><span>Fluidized-<span class="hlt">bed</span> boilers</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Makansi, J.; Schwieger, B.</p> <p>1982-08-01</p> <p>Discusses atmospheric fluidized-<span class="hlt">bed</span> (AFB) boilers with regard to designs available, manufacturers involved, and operating experience. Proven fuel flexibility and satisfactory SO/sub 2/ control without scrubbers make AFB boilers a viable option for industrial steam generation worldwide. Technical concepts on which AFB application is based are a departure from the more familiar methods of burning solid fuels. Behind US thrust for AFB development is the need to burn coal within pollution regulations.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19800016270','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19800016270"><span>Test <span class="hlt">Bed</span> Concentrator (TBC)</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Goldberg, V. R.</p> <p>1980-01-01</p> <p>A point focussing concentrator design adapted from an existing communications antenna for use in a solar test <span class="hlt">bed</span> application is described. The structure design, configured for use with JPL's spherical radius mirror panels, made no attempt toward optimization. The key objectives of stiffness, pointing accuracy, and timely delivery were exceeded. The system weight is approximately 16,000 Kg (36,000 lbs) and has a calculated 1 sigma system error of 0.03 degrees.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/6654215','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/6654215"><span>Combustion in fluidized <span class="hlt">beds</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Dry, F.J.; La Nauze, R.D. )</p> <p>1990-07-01</p> <p>Circulating fluidized-<span class="hlt">bed</span> (CFB) combustion systems have become popular since the late 1970s, and, given the current level of activity in the area,it is clear that this technology has a stable future in the boiler market. For standard coal combustion applications, competition is fierce with mature pulverized-fuel-based (PF) technology set to maintain a strong profile. CFB systems, however, can be more cost effective than PF systems when emission control is considered, and, as CFB technology matures, it is expected that an ever-increasing proportion of boiler installations will utilize the CFB concept. CFB systems have advantages in the combustion of low-grade fuels such as coal waste and biomass. In competition with conventional bubbling <span class="hlt">beds</span>, the CFB boiler often demonstrates superior carbon burn-out efficiency. The key to this combustion technique is the hydrodynamic behavior of the fluidized <span class="hlt">bed</span>. This article begins with a description of the fundamental fluid dynamic behavior of the CFB system. This is followed by an examination of the combustion process in such an environment and a discussion of the current status of the major CFB technologies.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.epa.gov/bedbugs/protecting-your-home-bed-bugs','NIH-MEDLINEPLUS'); return false;" href="https://www.epa.gov/bedbugs/protecting-your-home-bed-bugs"><span>Protecting Your Home from <span class="hlt">Bed</span> Bugs</span></a></p> <p><a target="_blank" href="http://medlineplus.gov/">MedlinePlus</a></p> <p></p> <p></p> <p>... <span class="hlt">Bed</span> Bugs — Do-it-yourself <span class="hlt">Bed</span> Bug Control — Pesticides to Control <span class="hlt">Bed</span> Bugs <span class="hlt">Bed</span> Bug Information Clearinghouse ... Living Health Land, Waste, and Cleanup Lead Mold Pesticides Radon Science Water A-Z Index Laws & Regulations ...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://ntrs.nasa.gov/search.jsp?R=20010096253&hterms=boy&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D50%26Ntt%3Dboy','NASA-TRS'); return false;" href="https://ntrs.nasa.gov/search.jsp?R=20010096253&hterms=boy&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D50%26Ntt%3Dboy"><span><span class="hlt">Bed</span> Rest Muscular Atrophy</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Greenleaf, John E.</p> <p>2000-01-01</p> <p>A major debilitating response from prolonged <span class="hlt">bed</span> rest (BR) is muscle atrophy, defined as a "decrease in size of a part of tissue after full development has been attained: a wasting away of tissue as from disuse, old age, injury or disease". Part of the complicated mechanism for the dizziness, increased body instability, and exaggerated gait in patients who arise immediately after BR may be a result of not only foot pain, but also of muscular atrophy and associated reduction in lower limb strength. Also, there seems to be a close association between muscle atrophy and bone atrophy. A discussion of many facets of the total BR homeostatic syndrome has been published. The old adage that use determines form which promotes function of bone (Wolff's law) also applies to those people exposed to prolonged BR (without exercise training) in whom muscle atrophy is a consistent finding. An extreme case involved a 16-year-old boy who was ordered to <span class="hlt">bed</span> by his mother in 1932: after 50 years in <span class="hlt">bed</span> he had "a lily-white frame with limbs as thin as the legs of a ladder-back chair". These findings emphasize the close relationship between muscle atrophy and bone atrophy. In addition to loss of muscle mass during deconditioning, there is a significant loss of muscle strength and a decrease in protein synthesis. Because the decreases in force (strength) are proportionately greater than those in fiber size or muscle cross-sectional area, other contributory factors must be involved; muscle fiber dehydration may be important.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/902748','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/902748"><span>Coal <span class="hlt">Bed</span> Methane Primer</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Dan Arthur; Bruce Langhus; Jon Seekins</p> <p>2005-05-25</p> <p>During the second half of the 1990's Coal <span class="hlt">Bed</span> Methane (CBM) production increased dramatically nationwide to represent a significant new source of income and natural gas for many independent and established producers. Matching these soaring production rates during this period was a heightened public awareness of environmental concerns. These concerns left unexplained and under-addressed have created a significant growth in public involvement generating literally thousands of unfocused project comments for various regional NEPA efforts resulting in the delayed development of public and fee lands. The accelerating interest in CBM development coupled to the growth in public involvement has prompted the conceptualization of this project for the development of a CBM Primer. The Primer is designed to serve as a summary document, which introduces and encapsulates information pertinent to the development of Coal <span class="hlt">Bed</span> Methane (CBM), including focused discussions of coal deposits, methane as a natural formed gas, split mineral estates, development techniques, operational issues, producing methods, applicable regulatory frameworks, land and resource management, mitigation measures, preparation of project plans, data availability, Indian Trust issues and relevant environmental technologies. An important aspect of gaining access to federal, state, tribal, or fee lands involves education of a broad array of stakeholders, including land and mineral owners, regulators, conservationists, tribal governments, special interest groups, and numerous others that could be impacted by the development of coal <span class="hlt">bed</span> methane. Perhaps the most crucial aspect of successfully developing CBM resources is stakeholder education. Currently, an inconsistent picture of CBM exists. There is a significant lack of understanding on the parts of nearly all stakeholders, including industry, government, special interest groups, and land owners. It is envisioned the Primer would being used by a variety of</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://ntrs.nasa.gov/search.jsp?R=20010096253&hterms=boy&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D40%26Ntt%3Dboy','NASA-TRS'); return false;" href="https://ntrs.nasa.gov/search.jsp?R=20010096253&hterms=boy&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D40%26Ntt%3Dboy"><span><span class="hlt">Bed</span> Rest Muscular Atrophy</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Greenleaf, John E.</p> <p>2000-01-01</p> <p>A major debilitating response from prolonged <span class="hlt">bed</span> rest (BR) is muscle atrophy, defined as a "decrease in size of a part of tissue after full development has been attained: a wasting away of tissue as from disuse, old age, injury or disease". Part of the complicated mechanism for the dizziness, increased body instability, and exaggerated gait in patients who arise immediately after BR may be a result of not only foot pain, but also of muscular atrophy and associated reduction in lower limb strength. Also, there seems to be a close association between muscle atrophy and bone atrophy. A discussion of many facets of the total BR homeostatic syndrome has been published. The old adage that use determines form which promotes function of bone (Wolff's law) also applies to those people exposed to prolonged BR (without exercise training) in whom muscle atrophy is a consistent finding. An extreme case involved a 16-year-old boy who was ordered to <span class="hlt">bed</span> by his mother in 1932: after 50 years in <span class="hlt">bed</span> he had "a lily-white frame with limbs as thin as the legs of a ladder-back chair". These findings emphasize the close relationship between muscle atrophy and bone atrophy. In addition to loss of muscle mass during deconditioning, there is a significant loss of muscle strength and a decrease in protein synthesis. Because the decreases in force (strength) are proportionately greater than those in fiber size or muscle cross-sectional area, other contributory factors must be involved; muscle fiber dehydration may be important.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19930017765','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19930017765"><span>Particle <span class="hlt">bed</span> reactor modeling</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Sapyta, Joe; Reid, Hank; Walton, Lew</p> <p>1993-01-01</p> <p>The topics are presented in viewgraph form and include the following: particle <span class="hlt">bed</span> reactor (PBR) core cross section; PBR bleed cycle; fuel and moderator flow paths; PBR modeling requirements; characteristics of PBR and nuclear thermal propulsion (NTP) modeling; challenges for PBR and NTP modeling; thermal hydraulic computer codes; capabilities for PBR/reactor application; thermal/hydralic codes; limitations; physical correlations; comparison of predicted friction factor and experimental data; frit pressure drop testing; cold frit mask factor; decay heat flow rate; startup transient simulation; and philosophy of systems modeling.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/870316','DOE-PATENT-XML'); return false;" href="http://www.osti.gov/scitech/servlets/purl/870316"><span>Biparticle fluidized <span class="hlt">bed</span> reactor</span></a></p> <p><a target="_blank" href="http://www.osti.gov/doepatents">DOEpatents</a></p> <p>Scott, Charles D.; Marasco, Joseph A.</p> <p>1996-01-01</p> <p>A fluidized <span class="hlt">bed</span> reactor system which utilizes a fluid phase, a retained fluidized primary particulate phase, and a migratory second particulate phase. The primary particulate phase is a particle such as a gel bead containing an immobilized biocatalyst. The secondary and tertiary particulate phases, continuously introduced and removed simultaneously in the cocurrent and countercurrent mode, act in a role such as a sorbent to continuously remove a product or by-product constituent from the fluid phase. Means for introducing and removing the sorbent phases include feed screw mechanisms and multivane slurry valves.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/biblio/201503','DOE-PATENT-XML'); return false;" href="http://www.osti.gov/scitech/biblio/201503"><span>Biparticle fluidized <span class="hlt">bed</span> reactor</span></a></p> <p><a target="_blank" href="http://www.osti.gov/doepatents">DOEpatents</a></p> <p>Scott, C.D.; Marasco, J.A.</p> <p>1996-02-27</p> <p>A fluidized <span class="hlt">bed</span> reactor system is described which utilizes a fluid phase, a retained fluidized primary particulate phase, and a migratory second particulate phase. The primary particulate phase is a particle such as a gel bead containing an immobilized biocatalyst. The secondary and tertiary particulate phases, continuously introduced and removed simultaneously in the cocurrent and countercurrent mode, act in a role such as a sorbent to continuously remove a product or by-product constituent from the fluid phase. Means for introducing and removing the sorbent phases include feed screw mechanisms and multivane slurry valves. 3 figs.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/biblio/46299','DOE-PATENT-XML'); return false;" href="http://www.osti.gov/scitech/biblio/46299"><span>Biparticle fluidized <span class="hlt">bed</span> reactor</span></a></p> <p><a target="_blank" href="http://www.osti.gov/doepatents">DOEpatents</a></p> <p>Scott, C.D.; Marasco, J.A.</p> <p>1995-04-25</p> <p>A fluidized <span class="hlt">bed</span> reactor system utilizes a fluid phase, a retained fluidized primary particulate phase, and a migratory second particulate phase. The primary particulate phase is a particle such as a gel bead containing an immobilized biocatalyst. The secondary particulate phase, continuously introduced and removed in either cocurrent or countercurrent mode, acts in a secondary role such as a sorbent to continuously remove a product or by-product constituent from the fluid phase. Introduction and removal of the sorbent phase is accomplished through the use of feed screw mechanisms and multivane slurry valves. 3 figs.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/869067','DOE-PATENT-XML'); return false;" href="http://www.osti.gov/scitech/servlets/purl/869067"><span>Biparticle fluidized <span class="hlt">bed</span> reactor</span></a></p> <p><a target="_blank" href="http://www.osti.gov/doepatents">DOEpatents</a></p> <p>Scott, Charles D.</p> <p>1993-01-01</p> <p>A fluidized <span class="hlt">bed</span> reactor system which utilizes a fluid phase, a retained fluidized primary particulate phase, and a migratory second particulate phase. The primary particulate phase is a particle such as a gel bead containing an immobilized biocatalyst. The secondary particulate phase, continuously introduced and removed in either cocurrent or countercurrent mode, acts in a secondary role such as a sorbent to continuously remove a product or by-product constituent from the fluid phase. Introduction and removal of the sorbent phase is accomplished through the use of feed screw mechanisms and multivane slurry valves.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/869848','DOE-PATENT-XML'); return false;" href="http://www.osti.gov/scitech/servlets/purl/869848"><span>Biparticle fluidized <span class="hlt">bed</span> reactor</span></a></p> <p><a target="_blank" href="http://www.osti.gov/doepatents">DOEpatents</a></p> <p>Scott, Charles D.; Marasco, Joseph A.</p> <p>1995-01-01</p> <p>A fluidized <span class="hlt">bed</span> reactor system utilizes a fluid phase, a retained fluidized primary particulate phase, and a migratory second particulate phase. The primary particulate phase is a particle such as a gel bead containing an immobilized biocatalyst. The secondary particulate phase, continuously introduced and removed in either cocurrent or countercurrent mode, acts in a secondary role such as a sorbent to continuously remove a product or by-product constituent from the fluid phase. Introduction and removal of the sorbent phase is accomplished through the use of feed screw mechanisms and multivane slurry valves.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/10185809','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/10185809"><span>Fluidized-<span class="hlt">bed</span> sorbents</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Gangwal, S.K.; Gupta, R.P.</p> <p>1994-10-01</p> <p>The objectives of this project are to identify and demonstrate methods for enhancing long-term chemical reactivity and attrition resistance of zinc oxide-based mixed metal-oxide sorbents for desulfurization of hot coal-derived gases in a high-temperature, high-pressure (HTHP) fluidized-<span class="hlt">bed</span> reactor. In this program, regenerable ZnO-based mixed metal-oxide sorbents are being developed and tested. These include zinc ferrite, zinc titanate, and Z-SORB sorbents. The Z-SORB sorbent is a proprietary sorbent developed by Phillips Petroleum Company (PPCo).</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/biblio/5320685','DOE-PATENT-XML'); return false;" href="http://www.osti.gov/scitech/biblio/5320685"><span>Biparticle fluidized <span class="hlt">bed</span> reactor</span></a></p> <p><a target="_blank" href="http://www.osti.gov/doepatents">DOEpatents</a></p> <p>Scott, C.D.</p> <p>1993-12-14</p> <p>A fluidized <span class="hlt">bed</span> reactor system which utilizes a fluid phase, a retained fluidized primary particulate phase, and a migratory second particulate phase is described. The primary particulate phase is a particle such as a gel bead containing an immobilized biocatalyst. The secondary particulate phase, continuously introduced and removed in either cocurrent or countercurrent mode, acts in a secondary role such as a sorbent to continuously remove a product or by-product constituent from the fluid phase. Introduction and removal of the sorbent phase is accomplished through the use of feed screw mechanisms and multivane slurry valves. 3 figures.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/21531488','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/21531488"><span>Infant's <span class="hlt">bed</span> climate and <span class="hlt">bedding</span> in the Japanese home.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Nakamura Ikeda, Rie; Fukai, Kiyoko; Okamoto Mizuno, Kazue</p> <p>2012-06-01</p> <p>to assess the <span class="hlt">bed</span> climate of infants in their homes in Japan. descriptive, exploratory, non-experimental research design. the data were collected at the participants' homes under normal circumstances. nineteen healthy infants between the ages of two and five months. Their mothers, who joined a parenting class organised by a maternity clinic in Okayama, Japan, consented to participate in this study. we visited the infants' homes and interviewed their mothers concerning the types and use of <span class="hlt">bedding</span>. The temperature and relative humidity of the <span class="hlt">bed</span> climate at the back and foot of the <span class="hlt">bedding</span>, and in the room were measured every minute for four consecutive days. Differences among the <span class="hlt">bed</span> climates measured during three seasons (spring, summer, and autumn) were assessed by one-way analysis of variance. The <span class="hlt">bed</span> temperature was higher for infants than for adults. No significant difference in temperature was noted among the three seasons. The <span class="hlt">bed</span> temperature was about 36.0°C when waterproof sheets and futon mattresses for children or adult were used. The average relative humidity of the <span class="hlt">bed</span> climate at the back was highest in summer, followed by that in spring and autumn; the differences were significant. The use of waterproof sheets and futon mattresses for children in summer increased the relative humidity to 80% or more. The use of infant <span class="hlt">beds</span>, sunoko drainboards, and cotton futon mattresses in summer was effective in reducing the <span class="hlt">bed</span> humidity. these results suggest that nurse-midwives should advise the parents on comfortable <span class="hlt">bed</span> climates for their infants, as well as how to select and use <span class="hlt">bedding</span> for them. Copyright © 2010 Elsevier Ltd. All rights reserved.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/864384','DOE-PATENT-XML'); return false;" href="http://www.osti.gov/scitech/servlets/purl/864384"><span><span class="hlt">Bed</span> drain cover assembly for a fluidized <span class="hlt">bed</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/doepatents">DOEpatents</a></p> <p>Comparato, Joseph R.; Jacobs, Martin</p> <p>1982-01-01</p> <p>A loose fitting movable cover plate (36), suitable for the severe service encountered in a fluidized <span class="hlt">bed</span> combustor (10), restricts the flow of solids into the combustor drain lines (30) during shutdown of the <span class="hlt">bed</span>. This cover makes it possible to empty spent solids from the <span class="hlt">bed</span> drain lines which would otherwise plug the piping between the drain and the downstream metering device. This enables use of multiple drain lines each with a separate metering device for the control of solids flow rate.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/355807','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/355807"><span>Modeling of devolatilization in circulating fluidized <span class="hlt">bed</span> combustion</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Stenseng, M.; Lin, W.; Johnsson, J.E.; Dam-Johansen, K.</p> <p>1997-12-31</p> <p>A mathematical model is developed to describe the devolatilization process in a circulating fluidized <span class="hlt">bed</span> combustor. The model is a combination of two submodels: single particle devolatilization and fluid dynamics. The single particle model includes the influence of both chemical kinetics and heat transfer on the rate of devolatilization. The results show a good agreement with literature data. The fluid dynamic model describes the main characteristics of a CFB: a dense <span class="hlt">zone</span> in the bottom, followed by a splash <span class="hlt">zone</span> and a dilute <span class="hlt">zone</span> with a core-annulus structure. Each <span class="hlt">zone</span> is modeled as a number of CSTR`s and the size and number of CSTR`s has been estimated from tracer experiments in an 80 MW{sub th} CFB boiler. It was not possible to evaluate the model against experimental data, but the dependence of particle size on the degree of devolatilization in the dense <span class="hlt">bed</span> agrees qualitative with the expected behavior. The mode4l shows that the devolatilization mainly occurs in the dense <span class="hlt">bed</span>.</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_6");'>6</a></li> <li><a href="#" onclick='return showDiv("page_7");'>7</a></li> <li class="active"><span>8</span></li> <li><a href="#" onclick='return showDiv("page_9");'>9</a></li> <li><a href="#" onclick='return showDiv("page_10");'>10</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_8 --> <div id="page_9" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_7");'>7</a></li> <li><a href="#" onclick='return showDiv("page_8");'>8</a></li> <li class="active"><span>9</span></li> <li><a href="#" onclick='return showDiv("page_10");'>10</a></li> <li><a href="#" onclick='return showDiv("page_11");'>11</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="161"> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/870341','DOE-PATENT-XML'); return false;" href="http://www.osti.gov/scitech/servlets/purl/870341"><span>Pressurized fluidized <span class="hlt">bed</span> reactor</span></a></p> <p><a target="_blank" href="http://www.osti.gov/doepatents">DOEpatents</a></p> <p>Isaksson, Juhani</p> <p>1996-01-01</p> <p>A pressurized fluid <span class="hlt">bed</span> reactor power plant includes a fluidized <span class="hlt">bed</span> reactor contained within a pressure vessel with a pressurized gas volume between the reactor and the vessel. A first conduit supplies primary gas from the gas volume to the reactor, passing outside the pressure vessel and then returning through the pressure vessel to the reactor, and pressurized gas is supplied from a compressor through a second conduit to the gas volume. A third conduit, comprising a hot gas discharge, carries gases from the reactor, through a filter, and ultimately to a turbine. During normal operation of the plant, pressurized gas is withdrawn from the gas volume through the first conduit and introduced into the reactor at a substantially continuously controlled rate as the primary gas to the reactor. In response to an operational disturbance of the plant, the flow of gas in the first, second, and third conduits is terminated, and thereafter the pressure in the gas volume and in the reactor is substantially simultaneously reduced by opening pressure relief valves in the first and third conduits, and optionally by passing air directly from the second conduit to the turbine.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/biblio/203877','DOE-PATENT-XML'); return false;" href="http://www.osti.gov/scitech/biblio/203877"><span>Pressurized fluidized <span class="hlt">bed</span> reactor</span></a></p> <p><a target="_blank" href="http://www.osti.gov/doepatents">DOEpatents</a></p> <p>Isaksson, J.</p> <p>1996-03-19</p> <p>A pressurized fluid <span class="hlt">bed</span> reactor power plant includes a fluidized <span class="hlt">bed</span> reactor contained within a pressure vessel with a pressurized gas volume between the reactor and the vessel. A first conduit supplies primary gas from the gas volume to the reactor, passing outside the pressure vessel and then returning through the pressure vessel to the reactor, and pressurized gas is supplied from a compressor through a second conduit to the gas volume. A third conduit, comprising a hot gas discharge, carries gases from the reactor, through a filter, and ultimately to a turbine. During normal operation of the plant, pressurized gas is withdrawn from the gas volume through the first conduit and introduced into the reactor at a substantially continuously controlled rate as the primary gas to the reactor. In response to an operational disturbance of the plant, the flow of gas in the first, second, and third conduits is terminated, and thereafter the pressure in the gas volume and in the reactor is substantially simultaneously reduced by opening pressure relief valves in the first and third conduits, and optionally by passing air directly from the second conduit to the turbine. 1 fig.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2017AnRFM..49..463V','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2017AnRFM..49..463V"><span>Impact on Granular <span class="hlt">Beds</span></span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>van der Meer, Devaraj</p> <p>2017-01-01</p> <p>The impact of an object on a granular solid is an ubiquitous phenomenon in nature, the scale of which ranges from the impact of a raindrop onto sand all the way to that of a large asteroid on a planet. Despite the obvious relevance of these impact events, the study of the underlying physics mechanisms that guide them is relatively young, with most work concentrated in the past decade. Upon impact, an object starts to interact with a granular <span class="hlt">bed</span> and experiences a drag force from the sand. This ultimately leads to phenomena such as crater formation and the creation of a transient cavity that upon collapse may cause a jet to appear from above the surface of the sand. This review provides an overview of research that targets these phenomena, from the perspective of the analogous but markedly different impact of an object on a liquid. It successively addresses the drag an object experiences inside a granular <span class="hlt">bed</span>, the expansion and collapse of the cavity created by the object leading to the formation of a jet, and the remarkable role played by the air that resides within the pores between the grains.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/863485','DOE-PATENT-XML'); return false;" href="http://www.osti.gov/scitech/servlets/purl/863485"><span>Fast fluidized <span class="hlt">bed</span> steam generator</span></a></p> <p><a target="_blank" href="http://www.osti.gov/doepatents">DOEpatents</a></p> <p>Bryers, Richard W.; Taylor, Thomas E.</p> <p>1980-01-01</p> <p>A steam generator in which a high-velocity, combustion-supporting gas is passed through a <span class="hlt">bed</span> of particulate material to provide a fluidized <span class="hlt">bed</span> having a dense-phase portion and an entrained-phase portion for the combustion of fuel material. A first set of heat transfer elements connected to a steam drum is vertically disposed above the dense-phase fluidized <span class="hlt">bed</span> to form a first flow circuit for heat transfer fluid which is heated primarily by the entrained-phase fluidized <span class="hlt">bed</span>. A second set of heat transfer elements connected to the steam drum and forming the wall structure of the furnace provides a second flow circuit for the heat transfer fluid, the lower portion of which is heated by the dense-phase fluidized <span class="hlt">bed</span> and the upper portion by the entrained-phase fluidized <span class="hlt">bed</span>.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/865138','DOE-PATENT-XML'); return false;" href="http://www.osti.gov/scitech/servlets/purl/865138"><span>Ash level meter for a fixed-<span class="hlt">bed</span> coal gasifier</span></a></p> <p><a target="_blank" href="http://www.osti.gov/doepatents">DOEpatents</a></p> <p>Fasching, George E.</p> <p>1984-01-01</p> <p>An ash level meter for a fixed-<span class="hlt">bed</span> coal gasifier is provided which utilizes the known ash level temperature profile to monitor the ash <span class="hlt">bed</span> level. A <span class="hlt">bed</span> stirrer which travels up and down through the extent of the <span class="hlt">bed</span> ash level is modified by installing thermocouples to measure the <span class="hlt">bed</span> temperature as the stirrer travels through the stirring cycle. The temperature measurement signals are transmitted to an electronic signal process system by an FM/FM telemetry system. The processing system uses the temperature signals together with an analog stirrer position signal, taken from a position transducer disposed to measure the stirrer position to compute the vertical location of the ash <span class="hlt">zone</span> upper boundary. The circuit determines the fraction of each total stirrer cycle time the stirrer-derived <span class="hlt">bed</span> temperature is below a selected set point, multiplies this fraction by the average stirrer signal level, multiplies this result by an appropriate constant and adds another constant such that a 1 to 5 volt signal from the processor corresponds to a 0 to 30 inch span of the ash upper boundary level. Three individual counters in the processor store clock counts that are representative of: (1) the time the stirrer temperature is below the set point (500.degree. F.), (2) the time duration of the corresponding stirrer travel cycle, and (3) the corresponding average stirrer vertical position. The inputs to all three counters are disconnected during any period that the stirrer is stopped, eliminating corruption of the measurement by stirrer stoppage.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/5877687','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/5877687"><span>Study of fluidized-<span class="hlt">bed</span> desulfurization with zinc ferrite</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Grindley, T</p> <p>1991-01-01</p> <p>Previous work established the technical feasibility of desulfurizing the hot product gases of coal gasification with fixed <span class="hlt">beds</span> of a regenerable zinc ferrite sorbent. This process, intended for integration with coal gasifiers and gas turbines, has been tested and studied in considerable detail in a process development unit. Though possessing the advantages of high-sulfur absorption at low-sulfur breakthrough and the lack of sorbent attrition characteristic of a stationary <span class="hlt">bed</span>, fixed <span class="hlt">beds</span> also have inherent disadvantages: susceptibility to plugging by particles and a large diluent requirement during regeneration to control the reaction <span class="hlt">zone</span> temperature. Therefore, METC conducted a scoping laboratory test program to determine the desulfurizing capability of fluid <span class="hlt">beds</span> of zinc ferrite. Results from this program are presented. The results generally demonstrated that fluid <span class="hlt">beds</span> of zinc ferrite have the potential to lower the H{sub 2}S level in hot gas from 10,000 to 10 ppmv. To achieve this at a high-sorbent sulfur loading would require two fluid-<span class="hlt">bed</span> stages. Sorbent attrition appears to be acceptably low. Planned future activities include tests at high pressure with both simulated gas and in a gasifier sidestream.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/863850','DOE-PATENT-XML'); return false;" href="http://www.osti.gov/scitech/servlets/purl/863850"><span>Fluidized <span class="hlt">bed</span> boiler feed system</span></a></p> <p><a target="_blank" href="http://www.osti.gov/doepatents">DOEpatents</a></p> <p>Jones, Brian C.</p> <p>1981-01-01</p> <p>A fluidized <span class="hlt">bed</span> boiler feed system for the combustion of pulverized coal. Coal is first screened to separate large from small particles. Large particles of coal are fed directly to the top of the fluidized <span class="hlt">bed</span> while fine particles are first mixed with recycled char, preheated, and then fed into the interior of the fluidized <span class="hlt">bed</span> to promote char burnout and to avoid elutriation and carryover.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://pubs.er.usgs.gov/publication/70027337','USGSPUBS'); return false;" href="http://pubs.er.usgs.gov/publication/70027337"><span>Debris-<span class="hlt">bed</span> friction of hard-<span class="hlt">bedded</span> glaciers</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Cohen, D.; Iverson, N.R.; Hooyer, T.S.; Fischer, U.H.; Jackson, M.; Moore, P.L.</p> <p>2005-01-01</p> <p>[1] Field measurements of debris-<span class="hlt">bed</span> friction on a smooth rock tablet at the <span class="hlt">bed</span> of Engabreen, a hard-<span class="hlt">bedded</span>, temperate glacier in northern Norway, indicated that basal ice containing 10% debris by volume exerted local shear traction of up to 500 kPa. The corresponding bulk friction coefficient between the dirty basal ice and the tablet was between 0.05 and 0.08. A model of friction in which nonrotating spherical rock particles are held in frictional contact with the <span class="hlt">bed</span> by <span class="hlt">bed</span>-normal ice flow can account for these measurements if the power law exponent for ice flowing past large clasts is 1. A small exponent (n < 2) is likely because stresses in ice are small and flow is transient. Numerical calculations of the <span class="hlt">bed</span>-normal drag force on a sphere in contact with a flat <span class="hlt">bed</span> using n = 1 show that this force can reach values several hundred times that on a sphere isolated from the <span class="hlt">bed</span>, thus drastically increasing frictional resistance. Various estimates of basal friction are obtained from this model. For example, the shear traction at the <span class="hlt">bed</span> of a glacier sliding at 20 m a-1 with a geothermally induced melt rate of 0.006 m a-1 and an effective pressure of 300 kPa can exceed 100 kPa. Debris-<span class="hlt">bed</span> friction can therefore be a major component of sliding resistance, contradicting the common assumption that debris-<span class="hlt">bed</span> friction is negligible. Copyright 2005 by the American Geophysical Union.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://pubs.er.usgs.gov/publication/70013282','USGSPUBS'); return false;" href="http://pubs.er.usgs.gov/publication/70013282"><span><span class="hlt">Bedding</span> types in Holocene tidal channel sequences, Knik Arm, Upper Cook Inlet, Alaska.</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Bartsch-Winkler, S.; Schmoll, H.R.</p> <p>1984-01-01</p> <p>Uplifted convoluted and horizontal to subhorizontal <span class="hlt">beds</span> of varying thickness in intertidal silt as old as 3280 +- 90 yr BP are exposed in the banks of tidal channels of unknown depth in the intertidal <span class="hlt">zone</span> in Knik Arm of Upper Cook Inlet. Internal discordances may occur both within convoluted <span class="hlt">beds</span> and between convoluted and horizontal to subhorizontal <span class="hlt">beds</span>. At the base of many convoluted <span class="hlt">beds</span>, there is a rapid gradation upward into laminae which are severely deformed; that is, in some places, the contortions appear to have originated along a single <span class="hlt">bedding</span> plane. Where the convoluted sequences are truncated by nearly horizontal sequences, the distortion must have resulted from syndepositional or postdepositional events prior to their burial by the overlying <span class="hlt">beds</span>. Various forms of gravitational and tidal processes caused the deformation of the Knik Arm deposits. -from Authors</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/867677','DOE-PATENT-XML'); return false;" href="http://www.osti.gov/scitech/servlets/purl/867677"><span>Method for packing chromatographic <span class="hlt">beds</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/doepatents">DOEpatents</a></p> <p>Freeman, David H.; Angeles, Rosalie M.; Keller, Suzanne</p> <p>1991-01-01</p> <p>Column chromatography <span class="hlt">beds</span> are packed through the application of static force. A slurry of the chromatography <span class="hlt">bed</span> material and a non-viscous liquid is filled into the column plugged at one end, and allowed to settle. The column is transferred to a centrifuge, and centrifuged for a brief period of time to achieve a predetermined packing level, at a range generally of 100-5,000 gravities. Thereafter, the plug is removed, other fixtures may be secured, and the liquid is allowed to flow out through the <span class="hlt">bed</span>. This results in an evenly packed <span class="hlt">bed</span>, with no channeling or preferential flow characteristics.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/871725','DOE-PATENT-XML'); return false;" href="http://www.osti.gov/scitech/servlets/purl/871725"><span>Fluidized <span class="hlt">bed</span> deposition of diamond</span></a></p> <p><a target="_blank" href="http://www.osti.gov/doepatents">DOEpatents</a></p> <p>Laia, Jr., Joseph R.; Carroll, David W.; Trkula, Mitchell; Anderson, Wallace E.; Valone, Steven M.</p> <p>1998-01-01</p> <p>A process for coating a substrate with diamond or diamond-like material including maintaining a substrate within a <span class="hlt">bed</span> of particles capable of being fluidized, the particles having substantially uniform dimensions and the substrate characterized as having different dimensions than the <span class="hlt">bed</span> particles, fluidizing the <span class="hlt">bed</span> of particles, and depositing a coating of diamond or diamond-like material upon the substrate by chemical vapor deposition of a carbon-containing precursor gas mixture, the precursor gas mixture introduced into the fluidized <span class="hlt">bed</span> under conditions resulting in excitation mechanisms sufficient to form the diamond coating.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2017EGUGA..1919335G','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2017EGUGA..1919335G"><span>Effects of <span class="hlt">bed</span> material grain-size distribution on <span class="hlt">bed</span> morphology at a river confluence - numerical study</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Ghobadian, Rasool; Đorđević, Dejana; Ghanbari, Sara</p> <p>2017-04-01</p> <p>River confluences play an important role in the drainage of a catchment and transport of sediments and pollutants within this area. Riverbed morphology at these important nodes of the river drainage network might be very complex as shown by numerous laboratory studies in movable <span class="hlt">bed</span> models and scarce bathymetric surveys in the field. Different parameters were varied in laboratory confluences to infer which of them control morphodynamic processes at the confluence. It was shown that the development of three characteristic morphological elements, i.e. a bar with an avalanche face at the entrance of a tributary channel to the confluence, a scour hole and a separation <span class="hlt">zone</span> bar in the confluence hydrodynamics <span class="hlt">zone</span>, depended on: 1) the confluence plan-view (symmetrical or asymmetrical), 2) the junction angle, 3) the channel width ratio, 4) discharge and momentum-flux ratios of the combining flows, 5) sediment loads supplied into one or both upstream channels and 6) the sediment size of the <span class="hlt">bed</span> material and of supplied sediments. However, most of studies were conducted with uniform sediments. There are only a few laboratory and numerical studies on the effect of <span class="hlt">bed</span> material gradation on the erosion and deposition patterns in the confluence hydrodynamics <span class="hlt">zone</span> (CHZ). This study, thus, focuses on effects that <span class="hlt">bed</span> material grain-size distribution (GSD) has on these patterns at a river confluence. A layout of a 60o laboratory confluence of two straight channels with channel width ratio BT/BR=0.71 (where BT and BR are widths of tributary and main channels, respectively) is chosen for this numerical study. The laboratory confluence was created to study sediment transport and <span class="hlt">bed</span> morphology at the confluence whose <span class="hlt">bed</span> is filled with uniform sediments of D = 1.95 mm size. The experimental data from this confluence are selected for validation of a 3D finite-volume based model SSIIM1 that is used in the present study. Effects of GSD are analysed for four materials having the same D</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://pubs.er.usgs.gov/publication/70174928','USGSPUBS'); return false;" href="http://pubs.er.usgs.gov/publication/70174928"><span>Variability of <span class="hlt">bed</span> drag on cohesive <span class="hlt">beds</span> under wave action</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Safak, Ilgar</p> <p>2016-01-01</p> <p>Drag force at the <span class="hlt">bed</span> acting on water flow is a major control on water circulation and sediment transport. <span class="hlt">Bed</span> drag has been thoroughly studied in sandy waters, but less so in muddy coastal waters. The variation of <span class="hlt">bed</span> drag on a muddy shelf is investigated here using field observations of currents, waves, and sediment concentration collected during moderate wind and wave events. To estimate bottom shear stress and the <span class="hlt">bed</span> drag coefficient, an indirect empirical method of logarithmic fitting to current velocity profiles (log-law), a bottom boundary layer model for combined wave-current flow, and a direct method that uses turbulent fluctuations of velocity are used. The overestimation by the log-law is significantly reduced by taking turbulence suppression due to sediment-induced stratification into account. The best agreement between the model and the direct estimates is obtained by using a hydraulic roughness of 10  m in the model. Direct estimate of <span class="hlt">bed</span> drag on the muddy <span class="hlt">bed</span> is found to have a decreasing trend with increasing current speed, and is estimated to be around 0.0025 in conditions where wave-induced flow is relatively weak. <span class="hlt">Bed</span> drag shows an increase (up to fourfold) with increasing wave energy. These findings can be used to test the <span class="hlt">bed</span> drag parameterizations in hydrodynamic and sediment transport models and the skills of these models in predicting flows in muddy environments.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/253866','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/253866"><span>Dynamic <span class="hlt">bed</span> reactor</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Stormo, K.E.</p> <p>1996-07-02</p> <p>A dynamic <span class="hlt">bed</span> reactor is disclosed in which a compressible open cell foam matrix is periodically compressed and expanded to move a liquid or fluid through the matrix. In preferred embodiments, the matrix contains an active material such as an enzyme, biological cell, chelating agent, oligonucleotide, adsorbent or other material that acts upon the liquid or fluid passing through the matrix. The active material may be physically immobilized in the matrix, or attached by covalent or ionic bonds. Microbeads, substantially all of which have diameters less than 50 microns, can be used to immobilize the active material in the matrix and further improve reactor efficiency. A particularly preferred matrix is made of open cell polyurethane foam, which adsorbs pollutants such as polychlorophenol or o-nitrophenol. The reactors of the present invention allow unidirectional non-laminar flow through the matrix, and promote intimate exposure of liquid reactants to active agents such as microorganisms immobilized in the matrix. 27 figs.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/870492','DOE-PATENT-XML'); return false;" href="http://www.osti.gov/scitech/servlets/purl/870492"><span>Dynamic <span class="hlt">bed</span> reactor</span></a></p> <p><a target="_blank" href="http://www.osti.gov/doepatents">DOEpatents</a></p> <p>Stormo, Keith E.</p> <p>1996-07-02</p> <p>A dynamic <span class="hlt">bed</span> reactor is disclosed in which a compressible open cell foam matrix is periodically compressed and expanded to move a liquid or fluid through the matrix. In preferred embodiments, the matrix contains an active material such as an enzyme, biological cell, chelating agent, oligonucleotide, adsorbent or other material that acts upon the liquid or fluid passing through the matrix. The active material may be physically immobilized in the matrix, or attached by covalent or ionic bonds. Microbeads, substantially all of which have diameters less than 50 microns, can be used to immobilize the active material in the matrix and further improve reactor efficiency. A particularly preferred matrix is made of open cell polyurethane foam, which adsorbs pollutants such as polychlorophenol or o-nitrophenol. The reactors of the present invention allow unidirectional non-laminar flow through the matrix, and promote intimate exposure of liquid reactants to active agents such as microorganisms immobilized in the matrix.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://pubs.er.usgs.gov/publication/70015526','USGSPUBS'); return false;" href="http://pubs.er.usgs.gov/publication/70015526"><span>Late Wisconsin landform distribution and glacier-<span class="hlt">bed</span> conditions in Wisconsin</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Attig, J.W.; Mickelson, D.M.; Clayton, L.</p> <p>1989-01-01</p> <p>The late Wisconsin Laurentide Ice Sheet advanced across permafrost and reached its maximum extent in Wisconsin between about 18,000 and 15,000 years ago. Deep permafrost persisted in southern Wisconsin until about 14,000 years ago and in northern Wisconsin until about 13,000 years ago. We suggest that during maximum glaciation a <span class="hlt">zone</span> about 5 km wide in the south and 20 km wide in the north along the margin of the late Wisconsin glacier was frozen to its <span class="hlt">bed</span>. Meltwater from farther behind the margin, where the <span class="hlt">bed</span> was at least locally thawed, cut a series of closely spaced tunnel channels through the frozen-<span class="hlt">bed</span> <span class="hlt">zone</span>. These channels most likely formed episodically, and they were the source for much of the meltwater-stream sediment deposited in broad outwash plains beyond the ice margin. Frozen-<span class="hlt">bed</span> conditions near the margin also likely contributed to increased upward shearing of sediment and the accumulation of thicl supraglacial sediment in northern areas. Up ice from the frozen-<span class="hlt">bed</span> <span class="hlt">zone</span> the glacier <span class="hlt">bed</span> was at least locally thawed in a <span class="hlt">zone</span> about 75 km wide. Extensive drumlin fields formed in the area of the <span class="hlt">bed</span> that was thawed. By about 13,000 years ago permafrost melted in northern Wisconsin and thawed-<span class="hlt">bed</span> conditions probably extended to the ice margin throughout Wisconsin and adjacent areas. After about 13,000 years ago in northern Wisconsin the glacier was sliding on its <span class="hlt">bed</span> and forming drumlins out to the ice margin, and thick supraglacial sediment no longer accumulated. ?? 1989.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2016JEPT...89..848G','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2016JEPT...89..848G"><span>Mathematical Model of Hydraulic Fracturing of a <span class="hlt">Bed</span></span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Goncharova, G. S.; Khramchenkov, M. G.</p> <p>2016-07-01</p> <p>A study has been made of the problem on the process of formation of a <span class="hlt">zone</span> of higher-than-average permeability with a moving boundary in an initially low-permeability porous medium (problem on hydraulic fracturing of a <span class="hlt">bed</span>) in a three-dimensional formulation. A characteristic feature of the three-dimensional problem was the taking into account the existence of two <span class="hlt">zones</span> (<span class="hlt">zone</span> with a regular permeability and the destruction <span class="hlt">zone</span>) in the porous medium, whose contact region was determined using the condition of mass balance on the moving boundary. Special features fundamental to the process of mass transfer in such filtration-inhomogeneous porous media have been revealed and analyzed.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/20140004376','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/20140004376"><span>LSP Composite Test <span class="hlt">Bed</span> Design</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Day, Arthur C.; Griess, Kenneth H.</p> <p>2013-01-01</p> <p>This document provides standalone information for the Lightning Strike Protection (LSP) Composite Substrate Test <span class="hlt">Bed</span> Design. A six-sheet drawing set is reproduced for reference, as is some additional descriptive information on suitable sensors and use of the test <span class="hlt">bed</span>.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/20170000219','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/20170000219"><span>SMART NAS Test <span class="hlt">Bed</span> Overview</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Palopo, Kee</p> <p>2016-01-01</p> <p>These slides presents an overview of SMART NAS Test <span class="hlt">Bed</span>. The test <span class="hlt">bed</span> is envisioned to be connected to operational systems and to allow a new concept and technology to be evaluated in its realistic environment. Its role as an accelerator of concepts and technologies development, its use-case-driven development approach, and its state are presented.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.epa.gov/bedbugs/effectiveness-bed-bug-pesticides','PESTICIDES'); return false;" href="https://www.epa.gov/bedbugs/effectiveness-bed-bug-pesticides"><span>Effectiveness of <span class="hlt">Bed</span> Bug Pesticides</span></a></p> <p><a target="_blank" href="http://www.epa.gov/pesticides/search.htm">EPA Pesticide Factsheets</a></p> <p></p> <p></p> <p>Before EPA allows a <span class="hlt">bed</span> bug claim on a label, the product must be supported by data showing it will kill <span class="hlt">bed</span> bugs when applied according to the label. Also take into accounts factors such as extent of infestation, site preparation, and insect life stages.</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_7");'>7</a></li> <li><a href="#" onclick='return showDiv("page_8");'>8</a></li> <li class="active"><span>9</span></li> <li><a href="#" onclick='return showDiv("page_10");'>10</a></li> <li><a href="#" onclick='return showDiv("page_11");'>11</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_9 --> <div id="page_10" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_8");'>8</a></li> <li><a href="#" onclick='return showDiv("page_9");'>9</a></li> <li class="active"><span>10</span></li> <li><a href="#" onclick='return showDiv("page_11");'>11</a></li> <li><a href="#" onclick='return showDiv("page_12");'>12</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="181"> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.epa.gov/bedbugs/bed-bug-laws-and-regulations','PESTICIDES'); return false;" href="https://www.epa.gov/bedbugs/bed-bug-laws-and-regulations"><span><span class="hlt">Bed</span> Bug Laws and Regulations</span></a></p> <p><a target="_blank" href="http://www.epa.gov/pesticides/search.htm">EPA Pesticide Factsheets</a></p> <p></p> <p></p> <p>21 states have some level of regulation with regard to <span class="hlt">bed</span> bugs. Most of these requirements focus on hotels and landlords or other property managers. The Department of Housing and Urban Development has guidance on controlling <span class="hlt">bed</span> bugs in public housing.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/868870','DOE-PATENT-XML'); return false;" href="http://www.osti.gov/scitech/servlets/purl/868870"><span>Grate assembly for fixed-<span class="hlt">bed</span> coal gasifier</span></a></p> <p><a target="_blank" href="http://www.osti.gov/doepatents">DOEpatents</a></p> <p>Notestein, John E.</p> <p>1993-01-01</p> <p>A grate assembly for a coal gasifier of a moving-<span class="hlt">bed</span> or fixed-<span class="hlt">bed</span> type is provided for crushing agglomerates of solid material such as clinkers, tailoring the radial distribution of reactant gases entering the gasification reaction <span class="hlt">zone</span>, and control of the radial distribution of downwardly moving solid velocities in the gasification and combustion <span class="hlt">zone</span>. The clinker crushing is provided by pinching clinkers between vertically oriented stationary bars and angled bars supported on the upper surface of a rotating conical grate. The distribution of the reactant gases is provided by the selective positioning of horizontally oriented passageways extending through the grate. The radial distribution of the solids is provided by mounting a vertically and generally radially extending scoop mechanism on the upper surface of the grate near the apex thereof.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/18767752','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/18767752"><span>Ability of <span class="hlt">bed</span> bug-detecting canines to locate live <span class="hlt">bed</span> bugs and viable <span class="hlt">bed</span> bug eggs.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Pfiester, Margie; Koehler, Philip G; Pereira, Roberto M</p> <p>2008-08-01</p> <p>The <span class="hlt">bed</span> bug, Cimex lectularius L., like other <span class="hlt">bed</span> bug species, is difficult to visually locate because it is cryptic. Detector dogs are useful for locating <span class="hlt">bed</span> bugs because they use olfaction rather than vision. Dogs were trained to detect the <span class="hlt">bed</span> bug (as few as one adult male or female) and viable <span class="hlt">bed</span> bug eggs (five, collected 5-6 d after feeding) by using a modified food and verbal reward system. Their efficacy was tested with <span class="hlt">bed</span> bugs and viable <span class="hlt">bed</span> bug eggs placed in vented polyvinyl chloride containers. Dogs were able to discriminate <span class="hlt">bed</span> bugs from Camponotus floridanus Buckley, Blattella germanica (L.), and Reticulitermes flavipes (Kollar), with a 97.5% positive indication rate (correct indication of <span class="hlt">bed</span> bugs when present) and 0% false positives (incorrect indication of <span class="hlt">bed</span> bugs when not present). Dogs also were able to discriminate live <span class="hlt">bed</span> bugs and viable <span class="hlt">bed</span> bug eggs from dead <span class="hlt">bed</span> bugs, cast skins, and feces, with a 95% positive indication rate and a 3% false positive rate on <span class="hlt">bed</span> bug feces. In a controlled experiment in hotel rooms, dogs were 98% accurate in locating live <span class="hlt">bed</span> bugs. A pseudoscent prepared from pentane extraction of <span class="hlt">bed</span> bugs was recognized by trained dogs as <span class="hlt">bed</span> bug scent (100% indication). The pseudoscent could be used to facilitate detector dog training and quality assurance programs. If trained properly, dogs can be used effectively to locate live <span class="hlt">bed</span> bugs and viable <span class="hlt">bed</span> bug eggs.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/828174','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/828174"><span>Novel Simulated moving <span class="hlt">bed</span> technologies</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Purdue University</p> <p>2003-12-30</p> <p>Cellulose and hemicellulose from plants and other biomass can be hydrolyzed to produce sugars (i.e. glucose and xylose). Once these sugars are separated from other impurities, they can serve as feedstock in fermentation to produce ethanol (as fuels), lactic acid, or other valuable chemicals. The need for producing fuels and chemicals from renewable biomass has become abundantly clear over the last decade. However, the cost of producing fermentable sugars from biomass hydrolyzate using existing technology is relatively high and has been a major obstacle. The objective of this project is to develop an efficient and economical simulated moving <span class="hlt">bed</span> (SMB) process to recover fermentable sugars from biomass hydrolyzate. Sulfuric acid can hydrolyze the cellulose and hemicellulose in biomass to sugars, but this process can generate byproducts such as acetic acid, and can lead to further degradation of the xylose to furfural and glucose to hydroxymethyl furfural (HMF). Also, lignin and other compounds in the biomass will degrade to various phenolic compounds. If the concentrations of these compounds exceed certain threshold levels, they will be toxic to the downstream fermentation, and will severely limit the usefulness of the derived sugars. Standard post-hydrolysis processing involves neutralization of sulfuric acid, usually with lime (calcium hydroxide). A study by Wooley et al.showed that the limed hydrolyzate gave a low ethanol yield in fermentation test (20% of theoretical yield compared to 77% of theoretical yield from fermentation of pure sugars). They showed that instead of adding lime, an ion exclusion chromatography process could be used to remove acids, as well as to isolate the sugars from the biomass hydrolyzate. In this project, we investigated the feasibility of developing an economical SMB process based on (1) a polymeric adsorbent, Dowex99, which was used by Wooley et al., (2) a second polymeric adsorbent, poly-4-vinyl pyridine (or PVP in short, Reilly</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.fs.usda.gov/treesearch/pubs/25043','TREESEARCH'); return false;" href="https://www.fs.usda.gov/treesearch/pubs/25043"><span>Dicamptodon tenebrosus larvae within hyporheic <span class="hlt">zones</span> of intermittent streams in California</span></a></p> <p><a target="_blank" href="http://www.fs.usda.gov/treesearch/">Treesearch</a></p> <p>David Feral; Michael A. Camann; Hartwell H. Welsh Jr.</p> <p>2005-01-01</p> <p>Lotic ecosystems are increasingly viewed as having three interactive spatial compartments, i.e., channel sediments, the hyporheic <span class="hlt">zone</span>, and flood plains or riparian areas (Cummins et al. 1983; Ward 1989). The hyporheic <span class="hlt">zone</span> is the sub-benthic habitat of interstitial spaces between substrate particles in the stream <span class="hlt">bed</span>, and is the transition <span class="hlt">zone</span> between surface flow...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://pubs.er.usgs.gov/publication/70019266','USGSPUBS'); return false;" href="http://pubs.er.usgs.gov/publication/70019266"><span>Occurrence and significance of Silurian K-bentonite <span class="hlt">beds</span> at Arisaig, Nova Scotia, eastern Canada</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Bergstrom, Stig M.; Huff, W.D.; Kolata, Dennis R.; Melchin, Michael J.</p> <p>1997-01-01</p> <p>The most extensive succession of K-bentonite <span class="hlt">beds</span> known in the Silurian of North America occurs at Arisaig on the northern coast of Nova Scotia. At least 40 ash <span class="hlt">beds</span> are present in the Llandoverian Ross Brook Formation and at least four in the early Ludlovian McAdam Brook Formation. Most of the <span class="hlt">beds</span> are thin (<5 cm), but one <span class="hlt">bed</span> (the Smith Brook K-bentonite <span class="hlt">bed</span>) in the late Llandoverian crenulata <span class="hlt">Zone</span> and another (the McAdam Brook K-bentonite <span class="hlt">bed</span>) in the early Ludlovian nilssoni <span class="hlt">Zone</span> each reach a thickness of 20 cm. New graptolite collections provide critical information on the biostratigraphic position of the K-bentonite <span class="hlt">beds</span> in the Ross Brook Formation. Geochemical data show that the Arisaig ash <span class="hlt">beds</span> represent calc-alkaline magmas from plate margin, subduction-related volcanic vents. Differences in K-bentonite stratigraphie distribution, combined with paleogeographic considerations, suggest that the volcanoes were located much farther to the south in the Iapetus than the source volcanoes of the British - Baltoscandian Llandoverian K-bentonites.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/864676','DOE-PATENT-XML'); return false;" href="http://www.osti.gov/scitech/servlets/purl/864676"><span>Method for using fast fluidized <span class="hlt">bed</span> dry bottom coal gasification</span></a></p> <p><a target="_blank" href="http://www.osti.gov/doepatents">DOEpatents</a></p> <p>Snell, George J.; Kydd, Paul H.</p> <p>1983-01-01</p> <p>Carbonaceous solid material such as coal is gasified in a fast fluidized <span class="hlt">bed</span> gasification system utilizing dual fluidized <span class="hlt">beds</span> of hot char. The coal in particulate form is introduced along with oxygen-containing gas and steam into the fast fluidized <span class="hlt">bed</span> gasification <span class="hlt">zone</span> of a gasifier assembly wherein the upward superficial gas velocity exceeds about 5.0 ft/sec and temperature is 1500.degree.-1850.degree. F. The resulting effluent gas and substantial char are passed through a primary cyclone separator, from which char solids are returned to the fluidized <span class="hlt">bed</span>. Gas from the primary cyclone separator is passed to a secondary cyclone separator, from which remaining fine char solids are returned through an injection nozzle together with additional steam and oxygen-containing gas to an oxidation <span class="hlt">zone</span> located at the bottom of the gasifier, wherein the upward gas velocity ranges from about 3-15 ft/sec and is maintained at 1600.degree.-200.degree. F. temperature. This gasification arrangement provides for increased utilization of the secondary char material to produce higher overall carbon conversion and product yields in the process.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/23519134','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/23519134"><span>Which <span class="hlt">bed</span> designs and patient characteristics increase <span class="hlt">bed</span> rail use?</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Hignett, Sue; Sands, Gina; Fray, Mike; Xanthopoulou, Penny; Healey, Frances; Griffiths, Paula</p> <p>2013-07-01</p> <p>the design and use of <span class="hlt">bed</span> rails has been contentious since the 1950s with benefits including safety, mobility support and access to <span class="hlt">bed</span> controls and disadvantages associated with entrapment and restraint. to explore which <span class="hlt">bed</span> designs and patient characteristics (mobility, cognitive status and age) influence the likelihood of rails being used on UK medical wards. the use of rails was surveyed overnight at 18 hospitals between July 2010 and February 2011. data were collected on 2,219 <span class="hlt">beds</span> with 1,799 included (occupied). Eighty-six percent had rails attached; 52% had raised rails (42% had all raised). Adjusted logistic regression results suggest a significantly increased likelihood of rail use for (i) electric profiling <span class="hlt">beds</span> and ultra low <span class="hlt">beds</span>; (ii) >80 years; (iii) described as having any level of confusion or mobility impairment. These variables together explained 55% of the variance in rail use. The most frequently mentioned reason for raising rails was 'to prevent falls from the <span class="hlt">bed</span>' (61%) especially for patients described as confused (75%). there were indications that rails were being used inappropriately (as a restraint) for both confused patients and those needing assistance to mobilise.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2010PhDT.......372M','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2010PhDT.......372M"><span>Modeling biomass gasification in circulating fluidized <span class="hlt">beds</span></span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Miao, Qi</p> <p></p> <p>In this thesis, the modeling of biomass gasification in circulating fluidized <span class="hlt">beds</span> was studied. The hydrodynamics of a circulating fluidized <span class="hlt">bed</span> operating on biomass particles were first investigated, both experimentally and numerically. Then a comprehensive mathematical model was presented to predict the overall performance of a 1.2 MWe biomass gasification and power generation plant. A sensitivity analysis was conducted to test its response to several gasifier operating conditions. The model was validated using the experimental results obtained from the plant and two other circulating fluidized <span class="hlt">bed</span> biomass gasifiers (CFBBGs). Finally, an ASPEN PLUS simulation model of biomass gasification was presented based on minimization of the Gibbs free energy of the reaction system at chemical equilibrium. Hydrodynamics plays a crucial role in defining the performance of gas-solid circulating fluidized <span class="hlt">beds</span> (CFBs). A 2-dimensional mathematical model was developed considering the hydrodynamic behavior of CFB gasifiers. In the modeling, the CFB riser was divided into two regions: a dense region at the bottom and a dilute region at the top of the riser. Kunii and Levenspiel (1991)'s model was adopted to express the vertical solids distribution with some other assumptions. Radial distributions of <span class="hlt">bed</span> voidage were taken into account in the upper <span class="hlt">zone</span> by using Zhang et al. (1991)'s correlation. For model validation purposes, a cold model CFB was employed, in which sawdust was transported with air as the fluidizing agent. A comprehensive mathematical model was developed to predict the overall performance of a 1.2 MWe biomass gasification and power generation demonstration plant in China. Hydrodynamics as well as chemical reaction kinetics were considered. The fluidized <span class="hlt">bed</span> riser was divided into two distinct sections: (a) a dense region at the bottom of the <span class="hlt">bed</span> where biomass undergoes mainly heterogeneous reactions and (b) a dilute region at the top where most of homogeneous</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://cfpub.epa.gov/oppref/bedbug/','NIH-MEDLINEPLUS'); return false;" href="https://cfpub.epa.gov/oppref/bedbug/"><span>EPA-Registered <span class="hlt">Bed</span> Bug Products</span></a></p> <p><a target="_blank" href="http://medlineplus.gov/">MedlinePlus</a></p> <p></p> <p></p> <p>... criteria. When Treatments Don't Work <span class="hlt">Bed</span> Bug Pesticide Alert Never use a pesticide indoors that is intended for outdoor use. It ... solve your <span class="hlt">bed</span> bug problem. Using the wrong pesticide or using it incorrectly to treat for <span class="hlt">bed</span> ...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/324792','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/324792"><span>Economic and environmental benefits of fluidized <span class="hlt">bed</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Maitland, J.</p> <p>1997-12-31</p> <p>The control of sulfur dioxide and nitrogen oxides within the process design, with little need for additional environmental controls external to the boiler, is a unique feature of the fluid <span class="hlt">bed</span> technology. CFB`s unparalleled ability to achieve low NOx emissions is possible due to its low combustion temperature and by the careful design of air admission to the combustion <span class="hlt">zones</span>. The addition of selected sorbents to capture sulfur dioxide within the boiler results in low SOx emissions and a dry waste product for ease of disposal. This paper will focus on the design and operating performance of CFBs from the environmental viewpoint. What factors affect emissions? What options are available? Case histories will be used to illustrate the proven track record of CFB in meeting specific emissions requirements for different plant sites.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/504594','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/504594"><span>Pulse enhanced fluidized <span class="hlt">bed</span> combustion</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Mueller, B.; Golan, L.; Toma, M.; Mansour, M.</p> <p>1996-12-31</p> <p>Various technologies are available for the combustion of high-sulfur, high-ash fuels, particularly coal. From performance, economic and environmental standpoints, fluidized <span class="hlt">bed</span> combustion (FBC) is the leading candidate for utilization of high sulfur coals. ThermoChem, Inc., and the South Carolina Energy Research and Development Center (SCERDC) are installing a hybrid fluidized <span class="hlt">bed</span> combustion system at Clemson University. This hybrid system, known as the Pulsed Atmospheric Fluidized <span class="hlt">Bed</span> Combustor (PAFBC), will augment the University`s steam system by providing 50--60,000 lbs/hr of saturated process steam. The PAFBC, developed by Manufacturing and Technology Conversion International, Inc., (MTCI), integrates a pulse combustor with a bubbling-<span class="hlt">bed</span>-type atmospheric fluidized <span class="hlt">bed</span> coal combustor. The pulse combustion system imparts an acoustic effect that enhances combustion efficiency, SO{sub 2} capture, low NO{sub x} emissions, and heat transfer efficiency in the fluidized <span class="hlt">bed</span>. These benefits of pulse combustion result in modestly sized PAFBC units with high throughput rates and lower costs when compared to conventional fluidized <span class="hlt">bed</span> units.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/7025427','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/7025427"><span>Particle pressures in fluidized <span class="hlt">beds</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Campbell, C.S.; Rahman, K.; Hu, X.; Jin, C.; Potapov, A.V.</p> <p>1992-01-01</p> <p>This is an experimental project to make detailed measurements of the particle pressures generated in fluidized <span class="hlt">beds</span>. The focus lies in two principle areas: (1) the particle pressure distribution around single bubbles rising in a two-dimensional gas-fluidized <span class="hlt">bed</span> and (2) the particle pressures measured in liquid-fluidized <span class="hlt">beds</span>. This first year has largely been to constructing the experiments The design of the particle pressure probe has been improved and tested. A two-dimensional gas-fluidized <span class="hlt">bed</span> has been constructed in order to measure the particle pressure generated around injected bubbles. The probe is also being adapted to work in a liquid fluidized <span class="hlt">bed</span>. Finally, a two-dimensional liquid fluidized <span class="hlt">bed</span> is also under construction. Preliminary measurements show that the majority of the particle pressures are generated in the wake of a bubble. However, the particle pressures generated in the liquid <span class="hlt">bed</span> appear to be extremely small. Finally, while not directly associated with the particle pressure studies, some NERSC supercomputer time was granted alongside this project. This is being used to make large scale computer simulation of the flow of granular materials in hoppers.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19820013376','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19820013376"><span>Avionics test <span class="hlt">bed</span> development plan</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Harris, L. H.; Parks, J. M.; Murdock, C. R.</p> <p>1981-01-01</p> <p>A development plan for a proposed avionics test <span class="hlt">bed</span> facility for the early investigation and evaluation of new concepts for the control of large space structures, orbiter attached flex body experiments, and orbiter enhancements is presented. A distributed data processing facility that utilizes the current laboratory resources for the test <span class="hlt">bed</span> development is outlined. Future studies required for implementation, the management system for project control, and the baseline system configuration are defined. A background analysis of the specific hardware system for the preliminary baseline avionics test <span class="hlt">bed</span> system is included.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2007WRR....43.7418Y','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2007WRR....43.7418Y"><span>Calculating <span class="hlt">bed</span> load transport in steep boulder <span class="hlt">bed</span> channels</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Yager, E. M.; Kirchner, J. W.; Dietrich, W. E.</p> <p>2007-07-01</p> <p>Steep, rough channels occupy a large fraction of the total channel length in mountainous regions. Most sediment mobilized on hillslopes must pass through these streams before reaching lower-gradient channels. Steep channels have wide grain size distributions that are composed of finer, more mobile sediment and large, rarely mobile grains. The large grains can bear a significant portion of the total shear stress and thereby reduce the stress available to move the finer sediment. Conventional <span class="hlt">bed</span> load transport equations often overpredict the sediment flux in steep channels by several orders of magnitude. We hypothesize that sediment transport equations overpredict the sediment flux because they do not (1) account for the stress borne by rarely mobile grains, (2) differentiate between highly and rarely mobile sediment, and (3) account for the limited availability of mobile sediment. Here we modify a conventional <span class="hlt">bed</span> load transport equation to include these three effects. We use measurements of the flow, <span class="hlt">bed</span> properties, and sediment flux in a small, steep flume to test this equation. We supply gravel at a constant rate through fields of regularly spaced immobile spheres and measure the <span class="hlt">bed</span> coverage by gravel and sphere protrusion (the percent of the sphere that protrudes above the gravel deposit). For a given sphere spacing, the proportion of the <span class="hlt">bed</span> covered by gravel increases and the sphere protrusion decreases with greater sediment supply. Thus <span class="hlt">bed</span> coverage and immobile grain protrusion may serve as proxies for sediment availability in steep, rough streams. Unlike most transport equations that we tested, our modified <span class="hlt">bed</span> load equation predicts sediment fluxes to within an order of magnitude of the measured values. Our results demonstrate that accurately predicting <span class="hlt">bed</span> load transport in steep, rough streams may require accounting for the effects of local sediment availability (coverage by mobile sediment) and drag due to rarely mobile particles.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/20030093614','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/20030093614"><span>Concentration and Velocity Gradients in Fluidized <span class="hlt">Beds</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>McClymer, James P.</p> <p>2003-01-01</p> <p>In this work we focus on the height dependence of particle concentration, average velocity components, fluctuations in these velocities and, with the flow turned off, the sedimentation velocity. The latter quantities are measured using Particle Imaging Velocimetry (PIV). The PIV technique uses a 1-megapixel camera to capture two time-displaced images of particles in the <span class="hlt">bed</span>. The depth of field of the imaging system is approximately 0.5 cm. The camera images a region with characteristic length of 2.6 cm for the small particles and 4.7 cm. for the large particles. The local direction of particle flow is determined by calculating the correlation function for sub-regions of 32 x 32 pixels. The velocity vector map is created from this correlation function using the time between images (we use 15 to 30 ms). The software is sensitive variations of 1/64th of a pixel. We produce velocity maps at various heights, each consisting of 3844 velocities. We break this map into three vertical <span class="hlt">zones</span> for increased height information. The concentration profile is measured using an expanded (1 cm diameter) linearly polarized HeNe Laser incident on the fluidized <span class="hlt">bed</span>. A COHU camera (gamma=1, AGC off) with a lens and a polarizer images the transmitted linearly polarized light to minimize the effects of multiply scattered light. The intensity profile (640 X 480 pixels) is well described by a Gaussian fit and the height of the Gaussian is used to characterize the concentration. This value is compared to the heights found for known concentrations. The sedimentation velocity is estimated using by imaging a region near the bottom of the <span class="hlt">bed</span> and using PIV to measure the velocity as a function of time. With a nearly uniform concentration profile, the time can be converted to height information. The stable fluidized <span class="hlt">beds</span> are made from large pseudo-monodisperse particles (silica spheres with radii (250-300) microns and (425-500) microns) dispersed in a glycerin/water mix. The Peclet number is</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2012JGRF..117.1014M','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2012JGRF..117.1014M"><span>Using multiple <span class="hlt">bed</span> load measurements: Toward the identification of <span class="hlt">bed</span> dilation and contraction in gravel-<span class="hlt">bed</span> rivers</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Marquis, G. A.; Roy, A. G.</p> <p>2012-02-01</p> <p>This study examines <span class="hlt">bed</span> load transport processes in a small gravel-<span class="hlt">bed</span> river (Béard Creek, Québec) using three complementary methods: <span class="hlt">bed</span> elevation changes between successive floods, <span class="hlt">bed</span> activity surveys using tags inserted into the <span class="hlt">bed</span>, and <span class="hlt">bed</span> load transport rates from <span class="hlt">bed</span> load traps. The analysis of 20 flood events capable of mobilizing <span class="hlt">bed</span> material led to the identification of divergent results among the methods. In particular, <span class="hlt">bed</span> elevation changes were not consistent with the <span class="hlt">bed</span> activity surveys. In many cases, <span class="hlt">bed</span> elevation changes were significant (1 to 2 times the D50) even if the <span class="hlt">bed</span> surface had not been activated during the flood, leading to the identification of processes of <span class="hlt">bed</span> dilation and contraction that occurred over 10% to 40% of the <span class="hlt">bed</span> surface. These dynamics of the river <span class="hlt">bed</span> prevent accurate derivation of <span class="hlt">bed</span> load transport rates from topographic changes, especially for low magnitude floods. This paper discusses the mechanisms that could explain the dilation and contraction of particles within the <span class="hlt">bed</span> and their implications in fluvial dynamics. <span class="hlt">Bed</span> contraction seems to be the result of the winnowing of the fine sediments under very low gravel transport. <span class="hlt">Bed</span> dilation seems to occur on patches of the <span class="hlt">bed</span> at the threshold of motion where various processes such as fine sediment infiltration lead to the maintenance of a larger sediment framework volume. Both processes are also influenced by flood history and the initial local <span class="hlt">bed</span> state and in turn may have a significant impact on sediment transport and morphological changes in gravel-<span class="hlt">bed</span> rivers.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.youtube.com/watch?v=f3RJHBBYPi0','SCIGOVIMAGE-NASA'); return false;" href="http://www.youtube.com/watch?v=f3RJHBBYPi0"><span>Flight Analogs (<span class="hlt">Bed</span> Rest Research)</span></a></p> <p><a target="_blank" href="https://images.nasa.gov/">NASA Image and Video Library</a></p> <p></p> <p></p> <p>Flight Analogs / <span class="hlt">Bed</span> Rest Research Projects provide NASA with a ground based research platform to complement space research. By mimicking the conditions of weightlessness in the human body here on ...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.epa.gov/bedbugs/bed-bug-clearinghouse-audience','PESTICIDES'); return false;" href="https://www.epa.gov/bedbugs/bed-bug-clearinghouse-audience"><span><span class="hlt">Bed</span> Bug Clearinghouse by Audience</span></a></p> <p><a target="_blank" href="http://www.epa.gov/pesticides/search.htm">EPA Pesticide Factsheets</a></p> <p></p> <p></p> <p>This information is intended to help states, communities, and consumers prevent and control <span class="hlt">bed</span> bug infestations. Find materials for emergency and health facilities, hotels, housing authorities, landlords, schools, pest management professionals, and more.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=4553452','PMC'); return false;" href="https://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=4553452"><span><span class="hlt">Bed</span> Bugs: The Australian Response</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pmc">PubMed Central</a></p> <p>Doggett, Stephen L.; Orton, Christopher J.; Lilly, David G.; Russell, Richard C.</p> <p>2011-01-01</p> <p>Australia has experienced a sudden and unexpected resurgence in <span class="hlt">bed</span> bug infestations from both Cimex lectularius L. and Cimex hemipterus F. A survey in 2006 revealed that infestations had increased across the nation by an average of 4,500% since the start of the decade. In response, a multi-disciplinary approach to combat the rise of this public health pest was implemented and involved the coordinated efforts of several organizations. The key components of the strategy included the introduction of a pest management standard ‘A Code of Practice for the Control of <span class="hlt">Bed</span> Bug Infestations in Australia’ that defines and promotes ‘best practice’ in <span class="hlt">bed</span> bug eradication, the development of a policy and procedural guide for accommodation providers, education of stakeholders in best management practices, and research. These strategies continue to evolve with developments that lead to improvements in ‘best practice’ while <span class="hlt">bed</span> bugs remain problematic in Australia. PMID:26467616</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_8");'>8</a></li> <li><a href="#" onclick='return showDiv("page_9");'>9</a></li> <li class="active"><span>10</span></li> <li><a href="#" onclick='return showDiv("page_11");'>11</a></li> <li><a href="#" onclick='return showDiv("page_12");'>12</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_10 --> <div id="page_11" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_9");'>9</a></li> <li><a href="#" onclick='return showDiv("page_10");'>10</a></li> <li class="active"><span>11</span></li> <li><a href="#" onclick='return showDiv("page_12");'>12</a></li> <li><a href="#" onclick='return showDiv("page_13");'>13</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="201"> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/26467616','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/26467616"><span><span class="hlt">Bed</span> Bugs: The Australian Response.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Doggett, Stephen L; Orton, Christopher J; Lilly, David G; Russell, Richard C</p> <p>2011-04-15</p> <p>Australia has experienced a sudden and unexpected resurgence in <span class="hlt">bed</span> bug infestations from both Cimex lectularius L. and Cimex hemipterus F. A survey in 2006 revealed that infestations had increased across the nation by an average of 4,500% since the start of the decade. In response, a multi-disciplinary approach to combat the rise of this public health pest was implemented and involved the coordinated efforts of several organizations. The key components of the strategy included the introduction of a pest management standard 'A Code of Practice for the Control of <span class="hlt">Bed</span> Bug Infestations in Australia' that defines and promotes 'best practice' in <span class="hlt">bed</span> bug eradication, the development of a policy and procedural guide for accommodation providers, education of stakeholders in best management practices, and research. These strategies continue to evolve with developments that lead to improvements in 'best practice' while <span class="hlt">bed</span> bugs remain problematic in Australia.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/6684522','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/6684522"><span>Pulsed atmospheric fluidized <span class="hlt">bed</span> combustion</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Not Available</p> <p>1992-10-01</p> <p>The design of the Pulsed Atmospheric Fluidized <span class="hlt">Bed</span> Combustor (PAFBC) as described in the Quarterly Report for the period April--June, 1992 was reviewed and minor modifications were included. The most important change made was in the coal/limestone preparation and feed system. Instead of procuring pre-sized coal for testing of the PAFBC, it was decided that the installation of a milling system would permit greater flexibility in the testing with respect to size distributions and combustion characteristics in the pulse combustor and the fluid <span class="hlt">bed</span>. Particle size separation for pulse combustor and fluid <span class="hlt">bed</span> will be performed by an air classifier. The modified process flow diagram for the coal/limestone handling system is presented in Figure 1. The modified process flow diagrams of the fluidized <span class="hlt">bed</span>/steam cycle and ash handling systems are presented in Figures 2 and 3, respectively.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.epa.gov/bedbugs/print-bed-bug-card','PESTICIDES'); return false;" href="https://www.epa.gov/bedbugs/print-bed-bug-card"><span>Print a <span class="hlt">Bed</span> Bug Card</span></a></p> <p><a target="_blank" href="http://www.epa.gov/pesticides/search.htm">EPA Pesticide Factsheets</a></p> <p></p> <p></p> <p>Two sets of business card-sized lists of tips for prevention of <span class="hlt">bed</span> bug infestations, one for general use around home, the other for travelers. Print a single card or a page of cards for distribution.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/23041813','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/23041813"><span><span class="hlt">Bed</span> bugs in healthcare settings.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Munoz-Price, L Silvia; Safdar, Nasia; Beier, John C; Doggett, Stephen L</p> <p>2012-11-01</p> <p>Infestations caused by <span class="hlt">bed</span> bugs have resurfaced during the past decade across all continents. Even though <span class="hlt">bed</span> bugs primarily cause skin manifestations in humans, a major stigma is placed upon people or institutions found to carry them. It is important for healthcare facilities to be prepared for this pest by implementing policies, carefully selecting materials used for hospital furniture, and educating providers on early identification and control.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.dtic.mil/docs/citations/ADA164883','DTIC-ST'); return false;" href="http://www.dtic.mil/docs/citations/ADA164883"><span>Dynamic Compaction of Porous <span class="hlt">Beds</span></span></a></p> <p><a target="_blank" href="http://www.dtic.mil/">DTIC Science & Technology</a></p> <p></p> <p>1985-12-26</p> <p>NSWVC TR 83-246 00 00 SDYNAMIC COMPACTION OF POROUS B3EDS BY H. W. SANDUSKY T. P. LIDDIARD RESEARCH AND TECHNOLOGY DEPARTMENT D I 26 DECEMBER 1985...RIOBA4313 11. TITLE (Include Security Classfication3 Dynamic Compaction of Porous <span class="hlt">Beds</span> 12. PERSONAL AUTHOR(S) Sandusky, H. W., and Liddiard, T. P. 13a... Porous <span class="hlt">Bed</span> Compaction Wave Velocity Oeflaaration-to-Detonation Transition Particle Velocity ABSTRACT (Continue on reverse if necessary and identify</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/7279454','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/7279454"><span>Operating characteristics of rotating <span class="hlt">beds</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Keyvani, M.; Gardner, N.C.</p> <p>1988-01-01</p> <p>Vapor-liquid contacting in high gravitational fields offers prospects for significant reductions in the physical size, capital, and operating costs of packed towers. Pressure drops, power requirements, mass transfer coefficients and liquid residence time distributions are reported for a rotating <span class="hlt">bed</span> separator. The <span class="hlt">beds</span> studied were rigid, foamed aluminum, with specific surface areas ranging from 650 to 3000 m{sup 2}/m{sup 2}. Gravitational fields were varied from 50 to 300g.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/864049','DOE-PATENT-XML'); return false;" href="http://www.osti.gov/scitech/servlets/purl/864049"><span>Fluidized <span class="hlt">bed</span> heat exchanger with water cooled air distributor and dust hopper</span></a></p> <p><a target="_blank" href="http://www.osti.gov/doepatents">DOEpatents</a></p> <p>Jukkola, Walfred W.; Leon, Albert M.; Van Dyk, Jr., Garritt C.; McCoy, Daniel E.; Fisher, Barry L.; Saiers, Timothy L.; Karstetter, Marlin E.</p> <p>1981-11-24</p> <p>A fluidized <span class="hlt">bed</span> heat exchanger is provided in which air is passed through a <span class="hlt">bed</span> of particulate material containing fuel. A steam-water natural circulation system is provided for heat exchange and the housing of the heat exchanger has a water-wall type construction. Vertical in-<span class="hlt">bed</span> heat exchange tubes are provided and the air distributor is water-cooled. A water-cooled dust hopper is provided in the housing to collect particulates from the combustion gases and separate the combustion <span class="hlt">zone</span> from a volume within said housing in which convection heat exchange tubes are provided to extract heat from the exiting combustion gases.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/1245523','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/1245523"><span>FY-2015 Methyl Iodide Deep-<span class="hlt">Bed</span> Adsorption Test Report</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Soelberg, Nicholas Ray; Watson, Tony Leroy</p> <p>2015-09-30</p> <p>Nuclear fission produces fission and activation products, including iodine-129, which could evolve into used fuel reprocessing facility off-gas systems, and could require off-gas control to limit air emissions to levels within acceptable emission limits. Deep-<span class="hlt">bed</span> methyl iodide adsorption testing has continued in Fiscal Year 2015 according to a multi-laboratory methyl iodide adsorption test plan. Updates to the deep-<span class="hlt">bed</span> test system have also been performed to enable the inclusion of evaporated HNO<sub>3</sub> and increased NO<sub>2</sub> concentrations in future tests. This report summarizes the result of those activities. Test results showed that iodine adsorption from gaseous methyl iodide using reduced silver zeolite (AgZ) resulted in initial iodine decontamination factors (DFs, ratios of uncontrolled and controlled total iodine levels) under 1,000 for the conditions of the long-duration test performed this year (45 ppm CH3I, 1,000 ppm each NO and NO<sub>2</sub>, very low H<sub>2</sub>O levels [3 ppm] in balance air). The mass transfer <span class="hlt">zone</span> depth exceeded the cumulative 5-inch depth of 4 <span class="hlt">bed</span> segments, which is deeper than the 2-4 inch depth estimated for the mass transfer <span class="hlt">zone</span> for adsorbing I<sub>2</sub> using AgZ in prior deep-<span class="hlt">bed</span> tests. The maximum iodine adsorption capacity for the AgZ under the conditions of this test was 6.2% (6.2 g adsorbed I per 100 g sorbent). The maximum Ag utilization was 51%. Additional deep-<span class="hlt">bed</span> testing and analyses are recommended to (a) expand the data base for methyl iodide adsorption and (b) provide more data for evaluating organic iodide reactions and reaction byproducts for different potential adsorption conditions.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://pubs.er.usgs.gov/publication/70031114','USGSPUBS'); return false;" href="http://pubs.er.usgs.gov/publication/70031114"><span>Quantifying fluid and <span class="hlt">bed</span> dynamics for characterizing benthic physical habitat in large rivers</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Gaeuman, D.; Jacobson, R.B.</p> <p>2007-01-01</p> <p>Sturgeon use benthic habitats in and adjacent to main channels where environmental conditions can include bedload sediment transport and high near-<span class="hlt">bed</span> flow velocities. <span class="hlt">Bed</span> velocity measurements obtained with acoustic Doppler instruments provide a means to assess the concentration and velocity of sediment moving near the streambed, and are thus indicative of the bedload sediment transport rate, the near-<span class="hlt">bed</span> flow velocity, and the stability of the substrate. Acoustic assessments of benthic conditions in the Missouri River were conducted at scales ranging from the stream reach to individual bedforms. Reach-scale results show that spatially-averaged <span class="hlt">bed</span> velocities in excess of 0.5 m s-1 frequently occur in the navigation channel. At the local scale, <span class="hlt">bed</span> velocities are highest near bedform crests, and lowest in the troughs. Low-velocity <span class="hlt">zones</span> can persist in areas with extremely high mean <span class="hlt">bed</span> velocities. Use of these low-velocity <span class="hlt">zones</span> may allow sturgeon to make use of portions of the channel where the average conditions near the <span class="hlt">bed</span> are severe. To obtain <span class="hlt">bed</span> velocity measurements of the highest possible quality, it is necessary to extract bottom-track and GPS velocity information from the raw ADCP data files on a ping-by-ping basis. However, <span class="hlt">bed</span> velocity measured from a point can also be estimated using a simplified method that is more easily implemented in the context of routine monitoring. The method requires only the transect distance and direction data displayed in standard ADCP data-logging software. <span class="hlt">Bed</span> velocity estimates obtained using this method are usually within 5-10% of estimates obtained from ping-by-ping processing. ?? 2007 Blackwell Verlag.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/21240426','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/21240426"><span>Effect of <span class="hlt">bed</span> pressure drop on performance of a CFB boiler</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Hairui Yang; Hai Zhang; Shi Yang; Guangxi Yue; Jun Su; Zhiping Fu</p> <p>2009-05-15</p> <p>The effect of <span class="hlt">bed</span> pressure drop and <span class="hlt">bed</span> inventory on the performances of a circulating fluidized <span class="hlt">bed</span> (CFB) boiler was studied. By using the state specification design theory, the fluidization state of the gas-solids flow in the furnace of conventional CFB boilers was reconstructed to operate at a much lower <span class="hlt">bed</span> pressure drop by reducing <span class="hlt">bed</span> inventory and control <span class="hlt">bed</span> quality. Through theoretical analysis, it was suggested that there would exist a theoretical optimal value of <span class="hlt">bed</span> pressure drop, around which the boiler operation can achieve the maximal combustion efficiency and with significant reduction of the wear of the heating surface and fan energy consumption. The analysis was validated by field tests carried out in a 75 t/h CFB boiler. At full boiler load, when <span class="hlt">bed</span> pressure drop was reduced from 7.3 to 3.2 kPa, the height of the dense <span class="hlt">zone</span> in the lower furnace decreased, but the solid suspension density profile in the upper furnace and solid flow rate were barely influenced. Consequently, the average heat transfer coefficient in the furnace was kept nearly the same and the furnace temperature increment was less than 17{sup o}C. It was also found that the carbon content in the fly ash decreased first with decreasing <span class="hlt">bed</span> pressure drop and then increased with further increasing <span class="hlt">bed</span> pressure drop. The turning point with minimal carbon content was referred to as the point with optimal <span class="hlt">bed</span> pressure drop. For this boiler, at the optimum point the <span class="hlt">bed</span> pressure was around 5.7 kPa with the overall excess air ratio of 1.06. When the boiler was operated around this optimal point, not only the combustion efficiency was improved, but also fan energy consumption and wear of heating surface were reduced. 23 refs., 6 figs., 4 tabs.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/862725','DOE-PATENT-XML'); return false;" href="http://www.osti.gov/scitech/servlets/purl/862725"><span>Rapid ignition of fluidized <span class="hlt">bed</span> boiler</span></a></p> <p><a target="_blank" href="http://www.osti.gov/doepatents">DOEpatents</a></p> <p>Osborn, Liman D.</p> <p>1976-12-14</p> <p>A fluidized <span class="hlt">bed</span> boiler is started up by directing into the static <span class="hlt">bed</span> of inert and carbonaceous granules a downwardly angled burner so that the hot gases cause spouting. Air is introduced into the <span class="hlt">bed</span> at a rate insufficient to fluidize the entire <span class="hlt">bed</span>. Three regions are now formed in the <span class="hlt">bed</span>, a region of lowest gas resistance, a fluidized region and a static region with a mobile region at the interface of the fluidized and static regions. Particles are transferred by the spouting action to form a conical heap with the carbonaceous granules concentrated at the top. The hot burner gases ignite the carbonaceous matter on the top of the <span class="hlt">bed</span> which becomes distributed in the <span class="hlt">bed</span> by the spouting action and <span class="hlt">bed</span> movement. Thereafter the rate of air introduction is increased to fluidize the entire <span class="hlt">bed</span>, the spouter/burner is shut off, and the entire fluidized <span class="hlt">bed</span> is ignited.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.fs.usda.gov/treesearch/pubs/23942','TREESEARCH'); return false;" href="https://www.fs.usda.gov/treesearch/pubs/23942"><span>A general power equation for predicting <span class="hlt">bed</span> load transport rates in gravel <span class="hlt">bed</span> rivers</span></a></p> <p><a target="_blank" href="http://www.fs.usda.gov/treesearch/">Treesearch</a></p> <p>Jeffrey J. Barry; John M. Buffington; John G. King</p> <p>2004-01-01</p> <p>A variety of formulae has been developed to predict <span class="hlt">bed</span> load transport in gravel <span class="hlt">bed</span> rivers, ranging from simple regressions to complex multiparameter formulations. The ability to test these formulae across numerous field sites has, until recently, been hampered by a paucity of <span class="hlt">bed</span> load transport data for gravel <span class="hlt">bed</span> rivers. We use 2104 <span class="hlt">bed</span> load transport observations...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/5087585','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/5087585"><span>Stratigraphic relationship between Odontogryphaea Thirsae <span class="hlt">beds</span> and big shale of Wilcox (Paleocene-Eocene) in Louisiana</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Glawe, L.N. )</p> <p>1989-09-01</p> <p>The relationship between <span class="hlt">beds</span> of the oyster Odontogryphaea thirsae, of the surface Wilcox Group exposures in the Sabine uplift area of northwestern Louisiana and the Big Shale, a well-known subsurface mapping unit in central Louisiana, has been unclear. In a paleontological study of 2,158 ft of continuous Wilcox core from Sabine Parish, planktonic foraminiferal biostratigraphic <span class="hlt">zones</span> were determined that include: Globorotalia angulata and G. pusilla (P3), G. Pseudomenardii (P4), and G. velascoensis (P5). The O. thirsae <span class="hlt">bed</span> was assigned to the G. Pseudomenardii <span class="hlt">zone</span>. Electrical-log cross sections were used to demonstrate (1) the correlation between the O. thirsae <span class="hlt">bed</span> in the core hole and the O. thirsae <span class="hlt">bed</span> exposed at the surface at Many, Louisiana, a distance of 6 mi and (2) the correlation between the base of the 10-ft thick shale beneath the O. thirsae <span class="hlt">bed</span> in the core hole and the base of the Big Shale as recognized in the central Louisiana subsurface. Based on its assigned biostratigraphic <span class="hlt">zone</span>, The O. thirsae <span class="hlt">bed</span> in the updip Wilcox core hole is equivalent, in part, to the Big Shale of the basinal Wilcox of east-central Louisiana, which previously has been included in the G. pseudomenardii <span class="hlt">zone</span>. Paleontological recognition of a thin marine unit 1 ft above the O. thirsae <span class="hlt">bed</span> in the core hole on the southern flank of the Sabine uplift provides documentation of the transgressive character of the Big Shale - O. thirsae sequence and is evidence of the TP 2.1 cycle in Louisiana.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19940008974','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19940008974"><span>Clinical physiology of <span class="hlt">bed</span> rest</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Greenleaf, John E.</p> <p>1993-01-01</p> <p>Maintenance of optimal health in humans requires the proper balance between exercise, rest, and sleep as well as time in the upright position. About one-third of a lifetime is spent sleeping; and it is no coincidence that sleeping is performed in the horizontal position, the position in which gravitational influence on the body is minimal. Although enforced <span class="hlt">bed</span> rest is necessary for the treatment of some ailments, in some cases it has probably been used unwisely. In addition to the lower hydrostatic pressure with the normally dependent regions of the cardiovascular system, body fuid compartments during <span class="hlt">bed</span> rest in the horizontal body position, and virtual elimination of compression on the long bones of the skeletal system during <span class="hlt">bed</span> rest (hypogravia), there is often reduction in energy metabolism due to the relative confinement (hypodynamia) and alteration of ambulatory circadian variations in metabolism, body temperature, and many hormonal systems. If patients are also moved to unfamiliar surroundings, they probably experience some feelings of anxiety and some sociopsychological problems. Adaptive physiological responses during <span class="hlt">bed</span> rest are normal for that environment. They are attempts by the body to reduce unnecessary energy expenditure, to optimize its function, and to enhance its survival potential. Many of the deconditioning responses begin within the first day or two of <span class="hlt">bed</span> rest; these early responses have prompted physicians to insist upon early resumption of the upright posture and ambulation of bedridden patients.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19890014150','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19890014150"><span>Space station propulsion test <span class="hlt">bed</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Briley, G. L.; Evans, S. A.</p> <p>1989-01-01</p> <p>A test <span class="hlt">bed</span> was fabricated to demonstrate hydrogen/oxygen propulsion technology readiness for the intital operating configuration (IOC) space station application. The test <span class="hlt">bed</span> propulsion module and computer control system were delivered in December 1985, but activation was delayed until mid-1986 while the propulsion system baseline for the station was reexamined. A new baseline was selected with hydrogen/oxygen thruster modules supplied with gas produced by electrolysis of waste water from the space shuttle and space station. As a result, an electrolysis module was designed, fabricated, and added to the test <span class="hlt">bed</span> to provide an end-to-end simulation of the baseline system. Subsequent testing of the test <span class="hlt">bed</span> propulsion and electrolysis modules provided an end-to-end demonstration of the complete space station propulsion system, including thruster hot firings using the oxygen and hydrogen generated from electrolysis of water. Complete autonomous control and operation of all test <span class="hlt">bed</span> components by the microprocessor control system designed and delivered during the program was demonstrated. The technical readiness of the system is now firmly established.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/5114771','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/5114771"><span>Model for boiling and dryout in particle <span class="hlt">beds</span>. [LMFBR</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Lipinski, R. J.</p> <p>1982-06-01</p> <p>Over the last ten years experiments and modeling of dryout in particle <span class="hlt">beds</span> have produced over fifty papers. Considering only volume-heated <span class="hlt">beds</span>, over 250 dryout measurements have been made, and are listed in this work. In addition, fifteen models to predict dryout have been produced and are discussed. A model is developed in this report for one-dimensional boiling and dryout in a porous medium. It is based on conservation laws for mass, momentum, and energy. The initial coupled differential equations are reduced to a single first-order differential equation with an algebraic equation for the upper boundary condition. The model includes the effects of both laminar and turbulent flow, two-phase friction, and capillary force. The boundary condition at the <span class="hlt">bed</span> bottom includes the possibility of inflowing liquid and either an adiabatic or a bottom-cooled support structure. The top of the <span class="hlt">bed</span> may be either channeled or subcooled. In the first case the channel length and the saturation at the base of the channels are predicted. In the latter case, a criterion for penetration of the subcooled <span class="hlt">zone</span> by channels is obtained.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2004JGRC..109.3050C','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2004JGRC..109.3050C"><span>Direct measurements of <span class="hlt">bed</span> stress under swash in the field</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Conley, Daniel C.; Griffin, John G.</p> <p>2004-03-01</p> <p>Utilizing flush mounted hot film anemometry, the <span class="hlt">bed</span> stress under swash was measured directly in a field experiment conducted on Barret Beach, Fire Island, New York. The theory, development, and calibration of the instrument package are discussed, and results from the field experiment are presented. Examples of <span class="hlt">bed</span> stress time series throughout a swash cycle are presented, and an ensemble averaged swash <span class="hlt">bed</span> stress cycle is calculated. Strong asymmetry is observed between the uprush and backwash phases of the swash flow. The maximum <span class="hlt">bed</span> shear stress exerted by the uprush is approximately double that of the backwash, while the duration of the backwash is 135% greater than that of the uprush. Friction coefficients in the swash <span class="hlt">zone</span> are observed to be similar in magnitude to those from steady flow, with the mean observed friction coefficient equal to 0.0037. Swash friction coefficients derived from the current measurements exhibit a Reynolds number dependence similar to that observed for other flows. A systematic difference between coefficients for uprush and backwash is suggested.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/865200','DOE-PATENT-XML'); return false;" href="http://www.osti.gov/scitech/servlets/purl/865200"><span>Staged cascade fluidized <span class="hlt">bed</span> combustor</span></a></p> <p><a target="_blank" href="http://www.osti.gov/doepatents">DOEpatents</a></p> <p>Cannon, Joseph N.; De Lucia, David E.; Jackson, William M.; Porter, James H.</p> <p>1984-01-01</p> <p>A fluid <span class="hlt">bed</span> combustor comprising a plurality of fluidized <span class="hlt">bed</span> stages interconnected by downcomers providing controlled solids transfer from stage to stage. Each stage is formed from a number of heat transfer tubes carried by a multiapertured web which passes fluidizing air to upper stages. The combustor cross section is tapered inwardly from the middle towards the top and bottom ends. Sorbent materials, as well as non-volatile solid fuels, are added to the top stages of the combustor, and volatile solid fuels are added at an intermediate stage.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2014WRR....50..986L','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2014WRR....50..986L"><span>Flow separation and shear stress over angle-of-repose <span class="hlt">bed</span> forms: A numerical investigation</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Lefebvre, Alice; Paarlberg, Andries J.; Winter, Christian</p> <p>2014-02-01</p> <p>Large asymmetric <span class="hlt">bed</span> forms commonly develop in rivers. The turbulence associated with flow separation that develops over their steep lee side is responsible for the form shear stress which can represent a substantial part of total shear stress in rivers. This paper uses the Delft3D modeling system to investigate the effects of <span class="hlt">bed</span> form geometry and forcing conditions on flow separation length and associated turbulence, and <span class="hlt">bed</span> form shear stress over angle-of-repose (30° lee side angle) <span class="hlt">bed</span> forms. The model was validated with lab measurements that showed sufficient agreement to be used for a systematic analysis. The influence of flow velocity, <span class="hlt">bed</span> roughness, relative height (<span class="hlt">bed</span> form height/water depth), and aspect ratio (<span class="hlt">bed</span> form height/length) on the variations of the normalized length of the flow separation <span class="hlt">zone</span>, the extent of the wake region (where the turbulent kinetic energy (TKE) was more than 70% of the maximum TKE), the average TKE within the wake region and the form shear stress were investigated. Form shear stress was found not to scale with the size of the flow separation <span class="hlt">zone</span> but to be related to the product of the normalized extent of the wake region (extent of the wake region/extent of water body above the <span class="hlt">bed</span> form) and the average TKE within the wake region. The results add to understanding of the hydrodynamics of <span class="hlt">bed</span> forms and may be used for the development of better parameterizations of small-scale processes for application in large-scale studies.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/216299','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/216299"><span><span class="hlt">Bed</span> material agglomeration during fluidized <span class="hlt">bed</span> combustion. Final report</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Brown, R.C.; Dawson, M.R.; Smeenk, J.L.</p> <p>1996-01-01</p> <p>The purpose of this project is to determine the physical and chemical reactions which lead to the undesired agglomeration of <span class="hlt">bed</span> material during fluidized <span class="hlt">bed</span> combustion of coal and to relate these reactions to specific causes. A survey of agglomeration and deposit formation in industrial fluidized <span class="hlt">bed</span> combustors (FBCs) indicate that at least five boilers were experiencing some form of <span class="hlt">bed</span> material agglomeration. Deposit formation was reported at nine sites with deposits most commonly at coal feed locations and in cyclones. Other deposit locations included side walls and return loops. Three general types of mineralogic reactions were observed to occur in the agglomerates and deposits. Although alkalies may play a role with some {open_quotes}high alkali{close_quotes} lignites, we found agglomeration was initiated due to fluxing reactions between iron (II) from pyrites and aluminosilicates from clays. This is indicated by the high amounts of iron, silica, and alumina in the agglomerates and the mineralogy of the agglomerates. Agglomeration likely originated in the dense phase of the FBC <span class="hlt">bed</span> within the volatile plume which forms when coal is introduced to the boiler. Secondary mineral reactions appear to occur after the agglomerates have formed and tend to strengthen the agglomerates. When calcium is present in high amounts, most of the minerals in the resulting deposits are in the melilite group (gehlenite, melilite, and akermanite) and pyroxene group (diopside and augite). During these solid-phase reactions, the temperature of formation of the melilite minerals can be lowered by a reduction of the partial pressure of CO{sub 2} (Diopside + Calcite {r_arrow}Akermanite).</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_9");'>9</a></li> <li><a href="#" onclick='return showDiv("page_10");'>10</a></li> <li class="active"><span>11</span></li> <li><a href="#" onclick='return showDiv("page_12");'>12</a></li> <li><a href="#" onclick='return showDiv("page_13");'>13</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_11 --> <div id="page_12" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_10");'>10</a></li> <li><a href="#" onclick='return showDiv("page_11");'>11</a></li> <li class="active"><span>12</span></li> <li><a href="#" onclick='return showDiv("page_13");'>13</a></li> <li><a href="#" onclick='return showDiv("page_14");'>14</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="221"> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/23752370','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/23752370"><span>Saturated and unsaturated flow through sloped compost filter <span class="hlt">beds</span> of different particle sizes.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Petrell, R J; Gumulia, Anastasia</p> <p>2013-01-01</p> <p>Little is known about the hydraulics of sloped compost <span class="hlt">beds</span> having active free and non-flowing <span class="hlt">zones</span>, and used for runoff erosion and volume control, and heavy metal removal. Water sorption tests on yard waste compost indicated that water transfer between the two <span class="hlt">zones</span> would be slow (6 hr for a 0.04 m rise). The free flowing <span class="hlt">zone</span> in ≈1 m long sloped (15°) <span class="hlt">beds</span> increased in depth (0.01-0.08 m) with decreasing particle size and increasing flow. Particle size and flow (0.08-0.3 L/s/m) affected <span class="hlt">bed</span> stability. Drainage volume increased with flow while drainage time remained fairly constant. Saturated flow occurred depending on the particle size above 0.02-0.165 L/s/m. Data indicate that sheet runoff from low intensity storms would most likely create unsaturated but stable <span class="hlt">bed</span> conditions. Concentrated flows as from downspouts would likely create saturated conditions and have to be managed to prevent washout. A model based on porous media theory indicated that flow regime under saturated flow is turbulent. Results can be used to design compost <span class="hlt">beds</span> for various runoff rates and to develop a heavy metal sorption model.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=3788588','PMC'); return false;" href="https://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=3788588"><span>Root Apex Transition <span class="hlt">Zone</span> As Oscillatory <span class="hlt">Zone</span></span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pmc">PubMed Central</a></p> <p>Baluška, František; Mancuso, Stefano</p> <p>2013-01-01</p> <p>Root apex of higher plants shows very high sensitivity to environmental stimuli. The root cap acts as the most prominent plant sensory organ; sensing diverse physical parameters such as gravity, light, humidity, oxygen, and critical inorganic nutrients. However, the motoric responses to these stimuli are accomplished in the elongation region. This spatial discrepancy was solved when we have discovered and characterized the transition <span class="hlt">zone</span> which is interpolated between the apical meristem and the subapical elongation <span class="hlt">zone</span>. Cells of this <span class="hlt">zone</span> are very active in the cytoskeletal rearrangements, endocytosis and endocytic vesicle recycling, as well as in electric activities. Here we discuss the oscillatory nature of the transition <span class="hlt">zone</span> which, together with several other features of this <span class="hlt">zone</span>, suggest that it acts as some kind of command center. In accordance with the early proposal of Charles and Francis Darwin, cells of this root <span class="hlt">zone</span> receive sensory information from the root cap and instruct the motoric responses of cells in the elongation <span class="hlt">zone</span>. PMID:24106493</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/865612','DOE-PATENT-XML'); return false;" href="http://www.osti.gov/scitech/servlets/purl/865612"><span>Apparatus and process for controlling fluidized <span class="hlt">beds</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/doepatents">DOEpatents</a></p> <p>Rehmat, Amirali G.; Patel, Jitendra G.</p> <p>1985-10-01</p> <p>An apparatus and process for control and maintenance of fluidized <span class="hlt">beds</span> under non-steady state conditions. An ash removal conduit is provided for removing solid particulates from a fluidized <span class="hlt">bed</span> separate from an ash discharge conduit in the lower portion of the grate supporting such a <span class="hlt">bed</span>. The apparatus and process of this invention is particularly suitable for use in ash agglomerating fluidized <span class="hlt">beds</span> and provides control of the fluidized <span class="hlt">bed</span> before ash agglomeration is initiated and during upset conditions resulting in stable, sinter-free fluidized <span class="hlt">bed</span> maintenance.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19890018331','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19890018331"><span>Development and refinement of test <span class="hlt">bed</span> simulations</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Dravid, Narayan V.; Miller, Dean R.; Patterson, Alex G.; Gombos, Frank J.</p> <p>1989-01-01</p> <p>Lewis Research Center of NASA, with support from Rocketdyne, was engaged in non-real time computer simulation effort for the Space Station Freedom Electric Power System (EPS) EASY5, a simulation package, is used as the primary tool for this activity. Early in the design of the EPS, two test <span class="hlt">beds</span> were set up at Lewis. The Integrated Test <span class="hlt">Bed</span> (ITB), that combines and upgrades these test <span class="hlt">beds</span>, is in the planning stage. The test <span class="hlt">beds</span> are designed to functionally represent many of the components of the EPS and their interconnections. The simulation effort is primarily directed towards these test <span class="hlt">beds</span>. Model verification is performed using test <span class="hlt">bed</span> data.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/349063','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/349063"><span>Advances in the optimization of moving <span class="hlt">bed</span> Sasol-Lurgi gasifiers</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Ranwell, P.; Greyvenstein, G.P.</p> <p>1998-12-31</p> <p>During the past ten years there have been significant advances in the development of the Sasol Lurgi gasifier. In 1987 some of the Mark IV Gasifiers in Sasolburg, South Africa were decommissioned and flushed with water, the coal and ash <span class="hlt">bed</span> were then excavated from the top, layer by layer, in order to examine the three dimensional profile of the ash <span class="hlt">bed</span> at the bottom of the gasifier. These excavations showed that the ash <span class="hlt">bed</span> and oxidation <span class="hlt">zone</span> have an axial symmetric ``W`` shape if viewed from the side. It was argued that this shape played an important role by influencing the stable operation of the gasifier. Most studies and modifications that followed were attempts to correct or adjust this particular shape to a more homogeneous and flat ash <span class="hlt">bed</span>. In this paper the mechanism that determines the three dimensional shape of the ash <span class="hlt">bed</span> were investigated. A computational fluid dynamic model was used to study the chemical reacting flow of gas in a packed coal <span class="hlt">bed</span>. With this model it was possible to determine the key parameters that influences the shape of the oxidation <span class="hlt">zone</span> and therefore the operation of the gasifier.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://ntrs.nasa.gov/search.jsp?R=19910000125&hterms=fat+loss&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D30%26Ntt%3Dfat%2Bloss','NASA-TRS'); return false;" href="https://ntrs.nasa.gov/search.jsp?R=19910000125&hterms=fat+loss&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D30%26Ntt%3Dfat%2Bloss"><span>Physiology Of Prolonged <span class="hlt">Bed</span> Rest</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Greenleaf, John E.</p> <p>1991-01-01</p> <p>Report describes physiological effects of prolonged <span class="hlt">bed</span> rest. Rest for periods of 24 hours or longer deconditions body to some extent; healing proceeds simultaneously with deconditioning. Report provides details on shifts in fluid electrolytes and loss of lean body mass, which comprises everything in body besides fat - that is, water, muscle, and bone. Based on published research.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.ars.usda.gov/research/publications/publication/?seqNo115=258077','TEKTRAN'); return false;" href="http://www.ars.usda.gov/research/publications/publication/?seqNo115=258077"><span>Laboratory rearing of <span class="hlt">bed</span> bugs</span></a></p> <p><a target="_blank" href="https://www.ars.usda.gov/research/publications/find-a-publication/">USDA-ARS?s Scientific Manuscript database</a></p> <p></p> <p></p> <p>The resurgence of <span class="hlt">bed</span> bugs Cimex lectularius L. in the United States and worldwide has resulted in an increase in research by university, government, and industry scientists directed at the biology and control of this blood-sucking pest. A need has subsequently arisen for producing sufficient biolog...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/6309245','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/6309245"><span>Electromechanics of packed granular <span class="hlt">beds</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Robinson, K.S.</p> <p>1982-01-01</p> <p>Strong, electrical, interparticle forces are induced by applied electric fields within packed <span class="hlt">beds</span> of dielectric particles. Proposed applications utilizing electropacked <span class="hlt">beds</span> (EPBs) or electrofluidized <span class="hlt">beds</span> (EFBs) include air filtration and gas clean-up, fine particle separation, commercial drying and coating processes, heat and mass transfer, and bulk <span class="hlt">bed</span> control. A new distributed circuit model of the electrical interparticle force is presented that identifies the role of surface roughness as determining the interparticle spacing. The dc steady state force is predicted to increase nearly linearly with the applied electric field and is theoretically independent of particle surface conductivity. The electric stress is found to vary nearly linearly with the applied electric field. Data are generally consistent with the theoretical contention that increased surface roughness decreases electromechanical effects. Surface conductivity variations of three to four times have no measurable effect on the dc steady state electric stress. The electric stress is insensitive to the dielectric properties of the interstitial gas eliminating Townsend discharge as a candidate for the nonlinear charge transport process thought to occur near interparticle contacts. The theoretical upper bound of the electric stress calculated using the distributed circuit model falls within the scatter of the data if a limit on the electric field in the interparticle gap which models nonlinear charge transport is in the range of 1 to 6 x 10/sup 7/ V/m. Estimates of the charge relaxation time using transient angle of repose experiments are somewhat smaller but comparable with theoretical values calculated by ignoring nonlinear charge transport.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://ntrs.nasa.gov/search.jsp?R=19910000125&hterms=Physiology&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D90%26Ntt%3DPhysiology','NASA-TRS'); return false;" href="https://ntrs.nasa.gov/search.jsp?R=19910000125&hterms=Physiology&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D90%26Ntt%3DPhysiology"><span>Physiology Of Prolonged <span class="hlt">Bed</span> Rest</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Greenleaf, John E.</p> <p>1991-01-01</p> <p>Report describes physiological effects of prolonged <span class="hlt">bed</span> rest. Rest for periods of 24 hours or longer deconditions body to some extent; healing proceeds simultaneously with deconditioning. Report provides details on shifts in fluid electrolytes and loss of lean body mass, which comprises everything in body besides fat - that is, water, muscle, and bone. Based on published research.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/864042','DOE-PATENT-XML'); return false;" href="http://www.osti.gov/scitech/servlets/purl/864042"><span>Char binder for fluidized <span class="hlt">beds</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/doepatents">DOEpatents</a></p> <p>Borio, Richard W.; Accortt, Joseph I.</p> <p>1981-01-01</p> <p>An arrangement that utilizes agglomerating coal as a binder to bond coal fines and recycled char into an agglomerate mass that will have suitable retention time when introduced into a fluidized <span class="hlt">bed</span> 14 for combustion. The simultaneous use of coal for a primary fuel and as a binder effects significant savings in the elimination of non-essential materials and processing steps.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/of/2002/ofr-02-0174/','USGSPUBS'); return false;" href="https://pubs.usgs.gov/of/2002/ofr-02-0174/"><span>Quality of economically extractable coal <span class="hlt">beds</span> in the Gillette coal field as compared with other Tertiary coal <span class="hlt">beds</span> in the Powder River basin, Wyoming and Montana</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Ellis, Margaret S.</p> <p>2002-01-01</p> <p>The Powder River Basin, and specifically the Gillette coal field, contains large quantities of economically extractable coal resources. These coal resources have low total sulfur content and ash yield, and most of the resources are subbituminous in rank. A recent U.S Geological Survey study of economically extractable coal in the Gillette coal field focused on five coal <span class="hlt">beds</span>, the Wyodak rider, Upper Wyodak, Canyon, Lower Wyodak-Werner, and Gates/Kennedy. This report compares the coal quality of these economically extractable coal <span class="hlt">beds</span> to coal in the Wyodak-Anderson coal <span class="hlt">zone</span> in the Powder River Basin and in the Gillette coal field (Flores and others, 1999) and other produced coal in the Gillette coal field (Glass, 2000). The Upper Wyodak, Canyon, and Lower Wyodak/Werner <span class="hlt">beds</span> are within the Wyodak-Anderson coal <span class="hlt">zone</span>. Compared with all coal in the Wyodak-Anderson coal <span class="hlt">zone</span>, both throughout the Powder River Basin and just within the Gillette coal field; the thick, persistent Upper Wyodak coal <span class="hlt">bed</span> in the Gillette coal field has higher mean gross calorific value (8,569 Btu/lb), lower mean ash yield (5.8 percent), and lower mean total sulfur content (0.46 percent).</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/263630','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/263630"><span>Heat exchanges between a fluidized <span class="hlt">bed</span> and small-sized bodies</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Teplitskii, Yu.S.</p> <p>1995-06-01</p> <p>On the basis of the two-<span class="hlt">zone</span> model, a procedure is developed for calculating the complex heat exchange of a probe of small dimensions (comparable with the diameter of the <span class="hlt">bed</span> particles). The procedure takes into account the influence of the fluidizing agent pressure.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://cfpub.epa.gov/si/si_public_record_report.cfm?dirEntryId=127042&keyword=Stewart&actType=&TIMSType=+&TIMSSubTypeID=&DEID=&epaNumber=&ntisID=&archiveStatus=Both&ombCat=Any&dateBeginCreated=&dateEndCreated=&dateBeginPublishedPresented=&dateEndPublishedPresented=&dateBeginUpdated=&dateEndUpdated=&dateBeginCompleted=&dateEndCompleted=&personID=&role=Any&journalID=&publisherID=&sortBy=revisionDate&count=50','EPA-EIMS'); return false;" href="http://cfpub.epa.gov/si/si_public_record_report.cfm?dirEntryId=127042&keyword=Stewart&actType=&TIMSType=+&TIMSSubTypeID=&DEID=&epaNumber=&ntisID=&archiveStatus=Both&ombCat=Any&dateBeginCreated=&dateEndCreated=&dateBeginPublishedPresented=&dateEndPublishedPresented=&dateBeginUpdated=&dateEndUpdated=&dateBeginCompleted=&dateEndCompleted=&personID=&role=Any&journalID=&publisherID=&sortBy=revisionDate&count=50"><span>DEVELOPMENT OF A METHODOLOGY FOR REGIONAL EVALUATION OF CONFINING <span class="hlt">BED</span> INTEGRITY</span></a></p> <p><a target="_blank" href="http://oaspub.epa.gov/eims/query.page">EPA Science Inventory</a></p> <p></p> <p></p> <p>For safe underground injection of liquid waste, confining formations must be thick, extensive, and have low permeability. Recognition of faults that extend from the potential injection <span class="hlt">zone</span> to underground sources of drinking water is critical for evaluation of confining-<span class="hlt">bed</span> integ...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://cfpub.epa.gov/si/si_public_record_report.cfm?dirEntryId=127042&keyword=Bases+AND+data+AND+management&actType=&TIMSType=+&TIMSSubTypeID=&DEID=&epaNumber=&ntisID=&archiveStatus=Both&ombCat=Any&dateBeginCreated=&dateEndCreated=&dateBeginPublishedPresented=&dateEndPublishedPresented=&dateBeginUpdated=&dateEndUpdated=&dateBeginCompleted=&dateEndCompleted=&personID=&role=Any&journalID=&publisherID=&sortBy=revisionDate&count=50&CFID=91057702&CFTOKEN=60083782','EPA-EIMS'); return false;" href="http://cfpub.epa.gov/si/si_public_record_report.cfm?dirEntryId=127042&keyword=Bases+AND+data+AND+management&actType=&TIMSType=+&TIMSSubTypeID=&DEID=&epaNumber=&ntisID=&archiveStatus=Both&ombCat=Any&dateBeginCreated=&dateEndCreated=&dateBeginPublishedPresented=&dateEndPublishedPresented=&dateBeginUpdated=&dateEndUpdated=&dateBeginCompleted=&dateEndCompleted=&personID=&role=Any&journalID=&publisherID=&sortBy=revisionDate&count=50&CFID=91057702&CFTOKEN=60083782"><span>DEVELOPMENT OF A METHODOLOGY FOR REGIONAL EVALUATION OF CONFINING <span class="hlt">BED</span> INTEGRITY</span></a></p> <p><a target="_blank" href="http://oaspub.epa.gov/eims/query.page">EPA Science Inventory</a></p> <p></p> <p></p> <p>For safe underground injection of liquid waste, confining formations must be thick, extensive, and have low permeability. Recognition of faults that extend from the potential injection <span class="hlt">zone</span> to underground sources of drinking water is critical for evaluation of confining-<span class="hlt">bed</span> integ...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://ntrs.nasa.gov/search.jsp?R=20060023367&hterms=cooperation+Interagency&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D20%26Ntt%3Dcooperation%2BInteragency','NASA-TRS'); return false;" href="https://ntrs.nasa.gov/search.jsp?R=20060023367&hterms=cooperation+Interagency&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D20%26Ntt%3Dcooperation%2BInteragency"><span>The NASA <span class="hlt">Bed</span> Rest Project</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Rhodes, Bradley; Meck, Janice</p> <p>2005-01-01</p> <p>NASA s National Vision for Space Exploration includes human travel beyond low earth orbit and the ultimate safe return of the crews. Crucial to fulfilling the vision is the successful and timely development of countermeasures for the adverse physiological effects on human systems caused by long term exposure to the microgravity environment. Limited access to in-flight resources for the foreseeable future increases NASA s reliance on ground-based analogs to simulate these effects of microgravity. The primary analog for human based research will be head-down <span class="hlt">bed</span> rest. By this approach NASA will be able to evaluate countermeasures in large sample sizes, perform preliminary evaluations of proposed in-flight protocols and assess the utility of individual or combined strategies before flight resources are requested. In response to this critical need, NASA has created the <span class="hlt">Bed</span> Rest Project at the Johnson Space Center. The Project establishes the infrastructure and processes to provide a long term capability for standardized domestic <span class="hlt">bed</span> rest studies and countermeasure development. The <span class="hlt">Bed</span> Rest Project design takes a comprehensive, interdisciplinary, integrated approach that reduces the resource overhead of one investigator for one campaign. In addition to integrating studies operationally relevant for exploration, the Project addresses other new Vision objectives, namely: 1) interagency cooperation with the NIH allows for Clinical Research Center (CRC) facility sharing to the benefit of both agencies, 2) collaboration with our International Partners expands countermeasure development opportunities for foreign and domestic investigators as well as promotes consistency in approach and results, 3) to the greatest degree possible, the Project also advances research by clinicians and academia alike to encourage return to earth benefits. This paper will describe the Project s top level goals, organization and relationship to other Exploration Vision Projects, implementation</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=2715933','PMC'); return false;" href="https://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=2715933"><span>Utility of Recycled <span class="hlt">Bedding</span> for Laboratory Rodents</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pmc">PubMed Central</a></p> <p>Miyamoto, Toru; Li, Zhixia; Kibushi, Tomomi; Okano, Shinya; Yamasaki, Nakamichi; Kasai, Noriyuki</p> <p>2009-01-01</p> <p>Animal facilities generate a large amount of used <span class="hlt">bedding</span> containing excrement as medical waste. We developed a recycling system for used <span class="hlt">bedding</span> that involves soft hydrothermal processing. In this study, we examined the effects of <span class="hlt">bedding</span> type on growth, hematologic and serum biochemical values, and organ weights of female and male mice reared on either recycled or fresh <span class="hlt">bedding</span> from 3 to 33 wk of age. Neither growth nor physiology differed between mice housed on recycled <span class="hlt">bedding</span> compared with fresh <span class="hlt">bedding</span>. When 14-wk-old mice were bred, litter size and total number of weaned pups showed no significant differences between animals raised on recycled or fresh <span class="hlt">bedding</span>. Because <span class="hlt">bedding</span> type influences the environment within cages and animal rooms, we evaluated particulate and ammonia data from cages and animal rooms. Values were significantly lower from cages and rooms that used recycled <span class="hlt">bedding</span> than from those using fresh <span class="hlt">bedding</span>, thus indicating that recycled <span class="hlt">bedding</span> has the potential to improve the environment within both cages and animal rooms. Overall, this study revealed that recycled <span class="hlt">bedding</span> is an excellent material for use in housing laboratory rodents. Specifically, recycled <span class="hlt">bedding</span> may reduce medical waste and maintain healthy environments within cages and animal rooms. PMID:19653951</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/10397887','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/10397887"><span>The influence of complex biological feedstock on the fluidization and <span class="hlt">bed</span> stability in expanded <span class="hlt">bed</span> adsorption</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Fernandez-Lahore; Kleef; Kula; Thommes</p> <p>1999-08-20</p> <p>The stability of expanded <span class="hlt">bed</span> adsorption systems (EBA) was studied in biomass containing culture broth by residence time distribution (RTD) experiments, using pulse inputs of fluorescent molecules as tracers. Different commercial adsorbents (Streamline DEAE, SP, Phenyl, Chelating, and AC) were tested at various biomass concentrations (2.5-12 %, wet weight) of whole (Saccharomyces cerevisiae) yeast, yeast cell homogenate, and Escherichia coli homogenate. Analyzing the RTD according to the PDE model (PDE: axially dispersed plug-flow exchanging mass with stagnant <span class="hlt">zones</span>) allowed the calculation of three parameters: the number of transfer units for mass exchange between mobile and stagnant fraction (N), the Peclet number for overall axial dispersion (P), and the mobile fraction of the liquid in axially dispersed plug flow (varphi). When fluidization was performed in particle-free buffer the normalized response signal (after perfect input pulse) was symmetric (N:0; P: 50-100; varphi: 1), thus, demonstrating the formation of a homogeneous fluidized (expanded) <span class="hlt">bed</span>. Upon application of suspended biomass the RTD was skewed, depending on the adsorbent used and the type and level of biomass present in the sample. This situation leads to three different characteristic pictures: the well-fluidized system (N: >/= 7-10; P: >/= 40; varphi: 0.80-0.90), the system exhibiting bottom channeling (N: < 1-2; P: >/= 40; varphi: 0.5-0.7) and, the system where extensive agglomeration develops (N: 4-7; P: 20-40; varphi: < 0.5). These results demonstrate that changes in the hydrodynamics of EBA already take place in the presence of moderate concentrations of biomass. Furthermore, those changes can be quantitatively described mainly in terms of the fraction of stagnant <span class="hlt">zones</span> in the system, which are formed due to the interaction of biomass and adsorbent. The technique described here can be used to evaluate a certain combination of adsorbent and biomass with regard to its suitability for</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/21916602','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/21916602"><span>Impact of different discharge patterns on <span class="hlt">bed</span> occupancy rate and <span class="hlt">bed</span> waiting time: a simulation approach.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Zhu, Zhecheng</p> <p>2011-01-01</p> <p><span class="hlt">Beds</span> are one of the most important resources in a healthcare system. How to manage <span class="hlt">beds</span> efficiently is an important indicator of the efficiency of the healthcare system. <span class="hlt">Bed</span> management is challenging to many healthcare service providers in many aspects. In recent years, population growth and aging society impose extra pressure on <span class="hlt">bed</span> requirement. There are usually two key performance indicators of a <span class="hlt">bed</span> management system: <span class="hlt">bed</span> occupancy rate and <span class="hlt">bed</span> waiting time. In this paper, different discharge patterns and their impacts on the <span class="hlt">bed</span> occupancy rate and <span class="hlt">bed</span> waiting time are studied. A discrete event simulation model is constructed to evaluate the existing discharge pattern in a Singapore regional hospital using actual hospital admission and discharge transaction data. Then different discharge patterns are tested in the same context. Simulation results show that a proper discharge pattern significantly smoothes the fluctuation of <span class="hlt">bed</span> occupancy rate and reduce the <span class="hlt">bed</span> waiting time.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.epa.gov/managing-pests-schools/bed-bug-guidance-school-nurses','PESTICIDES'); return false;" href="https://www.epa.gov/managing-pests-schools/bed-bug-guidance-school-nurses"><span><span class="hlt">Bed</span> Bug Guidance for School Nurses</span></a></p> <p><a target="_blank" href="http://www.epa.gov/pesticides/search.htm">EPA Pesticide Factsheets</a></p> <p></p> <p></p> <p>School nurses are often called upon to provide vital information to students, parents, teachers, and administrators. These tips on identifying, managing and preventing <span class="hlt">bed</span> bugs will help you to effectively respond if <span class="hlt">bed</span> bugs appear in your school.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://cfpub.epa.gov/si/si_public_record_report.cfm?dirEntryId=127735&keyword=Pyrolysis&actType=&TIMSType=+&TIMSSubTypeID=&DEID=&epaNumber=&ntisID=&archiveStatus=Both&ombCat=Any&dateBeginCreated=&dateEndCreated=&dateBeginPublishedPresented=&dateEndPublishedPresented=&dateBeginUpdated=&dateEndUpdated=&dateBeginCompleted=&dateEndCompleted=&personID=&role=Any&journalID=&publisherID=&sortBy=revisionDate&count=50','EPA-EIMS'); return false;" href="http://cfpub.epa.gov/si/si_public_record_report.cfm?dirEntryId=127735&keyword=Pyrolysis&actType=&TIMSType=+&TIMSSubTypeID=&DEID=&epaNumber=&ntisID=&archiveStatus=Both&ombCat=Any&dateBeginCreated=&dateEndCreated=&dateBeginPublishedPresented=&dateEndPublishedPresented=&dateBeginUpdated=&dateEndUpdated=&dateBeginCompleted=&dateEndCompleted=&personID=&role=Any&journalID=&publisherID=&sortBy=revisionDate&count=50"><span>EMERGING TECHNOLOGY BULLETIN: SPOUTED <span class="hlt">BED</span> REACTOR</span></a></p> <p><a target="_blank" href="http://oaspub.epa.gov/eims/query.page">EPA Science Inventory</a></p> <p></p> <p></p> <p>The Spouted <span class="hlt">Bed</span> Reactor (SBR) technology utilizes the unique attributes of the "spouting " fluidization regime, which can provide heat transfer rates comparable to traditional fluid <span class="hlt">beds</span>, while providing robust circulation of highly heterogeneous solids, concurrent with very agg...</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_10");'>10</a></li> <li><a href="#" onclick='return showDiv("page_11");'>11</a></li> <li class="active"><span>12</span></li> <li><a href="#" onclick='return showDiv("page_13");'>13</a></li> <li><a href="#" onclick='return showDiv("page_14");'>14</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_12 --> <div id="page_13" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_11");'>11</a></li> <li><a href="#" onclick='return showDiv("page_12");'>12</a></li> <li class="active"><span>13</span></li> <li><a href="#" onclick='return showDiv("page_14");'>14</a></li> <li><a href="#" onclick='return showDiv("page_15");'>15</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="241"> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.epa.gov/bedbugs/find-bed-bug-pesticide-product','PESTICIDES'); return false;" href="https://www.epa.gov/bedbugs/find-bed-bug-pesticide-product"><span>Find a <span class="hlt">Bed</span> Bug Pesticide Product</span></a></p> <p><a target="_blank" href="http://www.epa.gov/pesticides/search.htm">EPA Pesticide Factsheets</a></p> <p></p> <p></p> <p>Introduces the <span class="hlt">Bed</span> Bug Product Search Tool, to help consumers find EPA-registered pesticides for <span class="hlt">bed</span> bug infestation control. Inclusion in this database is not an endorsement. Always follow label directions carefully.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://cfpub.epa.gov/si/si_public_record_report.cfm?dirEntryId=127735&keyword=aggressive&actType=&TIMSType=+&TIMSSubTypeID=&DEID=&epaNumber=&ntisID=&archiveStatus=Both&ombCat=Any&dateBeginCreated=&dateEndCreated=&dateBeginPublishedPresented=&dateEndPublishedPresented=&dateBeginUpdated=&dateEndUpdated=&dateBeginCompleted=&dateEndCompleted=&personID=&role=Any&journalID=&publisherID=&sortBy=revisionDate&count=50&CFID=91058098&CFTOKEN=75572714','EPA-EIMS'); return false;" href="http://cfpub.epa.gov/si/si_public_record_report.cfm?dirEntryId=127735&keyword=aggressive&actType=&TIMSType=+&TIMSSubTypeID=&DEID=&epaNumber=&ntisID=&archiveStatus=Both&ombCat=Any&dateBeginCreated=&dateEndCreated=&dateBeginPublishedPresented=&dateEndPublishedPresented=&dateBeginUpdated=&dateEndUpdated=&dateBeginCompleted=&dateEndCompleted=&personID=&role=Any&journalID=&publisherID=&sortBy=revisionDate&count=50&CFID=91058098&CFTOKEN=75572714"><span>EMERGING TECHNOLOGY BULLETIN: SPOUTED <span class="hlt">BED</span> REACTOR</span></a></p> <p><a target="_blank" href="http://oaspub.epa.gov/eims/query.page">EPA Science Inventory</a></p> <p></p> <p></p> <p>The Spouted <span class="hlt">Bed</span> Reactor (SBR) technology utilizes the unique attributes of the "spouting " fluidization regime, which can provide heat transfer rates comparable to traditional fluid <span class="hlt">beds</span>, while providing robust circulation of highly heterogeneous solids, concurrent with very agg...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/20957820','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/20957820"><span>[Historical analysis of the hospital <span class="hlt">bed</span>].</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Fajardo-Ortiz, Guillermo; Fajardo-Dolci, Germán</p> <p>2010-01-01</p> <p>Until now the <span class="hlt">bed</span> has been the basic physical resource in hospitals. This type of furniture has served to study and treat patients, through out the centuries it has undergone changes in the materials they are made of dimensions, functionality, accessories, aesthetic, and design. The hospital <span class="hlt">bed</span> history is not well known, there are thousands of documents about the evolution of hospitals, but not enough is known about hospital <span class="hlt">beds</span>, a link between the past and the present. The medical, anthropological, technological, social, and economic dynamics and knowledge have produced a variety of <span class="hlt">beds</span> in general and hospital <span class="hlt">beds</span> in particular. From instinctive, rustic, poor and irregular "sites" that have differed in shape and size they had evolved into ergonomic equipment. The history of the hospital <span class="hlt">bed</span> reflects the culture, techniques and human thinking. Current hospital <span class="hlt">beds</span> include several types: for adults, for children, for labor, for intensive therapy, emergency purposes, census and non census <span class="hlt">beds</span> etc.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://medlineplus.gov/ency/patientinstructions/000429.htm','NIH-MEDLINEPLUS'); return false;" href="https://medlineplus.gov/ency/patientinstructions/000429.htm"><span>Pulling a patient up in <span class="hlt">bed</span></span></a></p> <p><a target="_blank" href="http://medlineplus.gov/">MedlinePlus</a></p> <p></p> <p></p> <p>Moving a patient in <span class="hlt">bed</span> ... takes at least 2 people to safely move a patient up in <span class="hlt">bed</span>. Friction from rubbing can ... A slide sheet is the best way to prevent friction. If you do not have one, you ...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.epa.gov/bedbugs/videos-webinars-blogs-related-bed-bugs','PESTICIDES'); return false;" href="https://www.epa.gov/bedbugs/videos-webinars-blogs-related-bed-bugs"><span>Videos, Webinars, Blogs Related to <span class="hlt">Bed</span> Bugs</span></a></p> <p><a target="_blank" href="http://www.epa.gov/pesticides/search.htm">EPA Pesticide Factsheets</a></p> <p></p> <p></p> <p>These tools provide practical insight on issues such as integrated pest management (IPM) for schools, <span class="hlt">bed</span> bug bites, how carpet beetles can help, <span class="hlt">bed</span> bugs as hitchhikers, and preventing and controlling infestations.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/18024738','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/18024738"><span>Bacillus cereus in free-stall <span class="hlt">bedding</span>.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Magnusson, M; Svensson, B; Kolstrup, C; Christiansson, A</p> <p>2007-12-01</p> <p>To increase the understanding of how different factors affect the bacterial growth in deep sawdust <span class="hlt">beds</span> for dairy cattle, the microbiological status of Bacillus cereus and coliforms in deep sawdust-<span class="hlt">bedded</span> free stalls was investigated over two 14-d periods on one farm. High counts of B. cereus and coliforms were found in the entire <span class="hlt">beds</span>. On average, 4.1 log(10) B. cereus spores, 5.5 log(10) B. cereus, and 6.7 log(10) coliforms per gram of <span class="hlt">bedding</span> could be found in the upper layers of the sawdust likely to be in contact with the cows' udders. The highest counts of B. cereus spores, B. cereus, and coliforms were found in the <span class="hlt">bedding</span> before fresh <span class="hlt">bedding</span> was added, and the lowest immediately afterwards. Different factors of importance for the growth of B. cereus in the <span class="hlt">bedding</span> material were explored in laboratory tests. These were found to be the type of <span class="hlt">bedding</span>, pH, and the type and availability of nutrients. Alternative <span class="hlt">bedding</span> material such as peat and mixtures of peat and sawdust inhibited the bacterial growth of B. cereus. The extent of growth of B. cereus in the sawdust was increased in a dose-dependent manner by the availability of feces. Urine added to different <span class="hlt">bedding</span> material raised the pH and also led to bacterial growth of B. cereus in the peat. In sawdust, a dry matter content greater than 70% was needed to lower the water activity to 0.95, which is needed to inhibit the growth of B. cereus. In an attempt to reduce the bacterial growth of B. cereus and coliforms in deep sawdust <span class="hlt">beds</span> on the farm, the effect of giving <span class="hlt">bedding</span> daily or a full replacement of the <span class="hlt">beds</span> was studied. The spore count of B. cereus in the back part of the free stalls before fresh <span class="hlt">bedding</span> was added was 0.9 log units lower in stalls given daily <span class="hlt">bedding</span> than in stalls given <span class="hlt">bedding</span> twice weekly. No effect on coliform counts was found. Replacement of the entire sawdust <span class="hlt">bedding</span> had an effect for a short period, but by 1 to 2 mo after replacement, the counts of B. cereus spores in the</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/1351104','DOE-PATENT-XML'); return false;" href="http://www.osti.gov/scitech/servlets/purl/1351104"><span>Providing plastic <span class="hlt">zone</span> extrusion</span></a></p> <p><a target="_blank" href="http://www.osti.gov/doepatents">DOEpatents</a></p> <p>Manchiraju, Venkata Kiran; Feng, Zhili; David, Stan A.; Yu, Zhenzhen</p> <p>2017-04-11</p> <p>Plastic <span class="hlt">zone</span> extrusion may be provided. First, a compressor may generate frictional heat in stock to place the stock in a plastic <span class="hlt">zone</span> of the stock. Then, a conveyer may receive the stock in its plastic <span class="hlt">zone</span> from the compressor and transport the stock in its plastic <span class="hlt">zone</span> from the compressor. Next, a die may receive the stock in its plastic <span class="hlt">zone</span> from the conveyer and extrude the stock to form a wire.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/868431','DOE-PATENT-XML'); return false;" href="http://www.osti.gov/scitech/servlets/purl/868431"><span>Two-stage fixed-<span class="hlt">bed</span> gasifier with selectable middle gas off-take point</span></a></p> <p><a target="_blank" href="http://www.osti.gov/doepatents">DOEpatents</a></p> <p>Strickland, Larry D.; Bissett, Larry A.</p> <p>1992-01-01</p> <p>A two-stage fixed <span class="hlt">bed</span> coal gasifier wherein an annular region is in registry with a gasification <span class="hlt">zone</span> underlying a devolatilization <span class="hlt">zone</span> for extracting a side stream of high temperature substantially tar-free gas from the gasifier. A vertically displaceable skirt means is positioned within the gasifier to define the lower portion of the annular region so that vertical displacement of the skirt means positions the inlet into the annular region in a selected location within or in close proximity to the gasification <span class="hlt">zone</span> for providing a positive control over the composition of the side stream gas.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.dtic.mil/docs/citations/AD1037432','DTIC-ST'); return false;" href="http://www.dtic.mil/docs/citations/AD1037432"><span>Landing <span class="hlt">Zone</span> and Drop <span class="hlt">Zone</span> Criteria</span></a></p> <p><a target="_blank" href="http://www.dtic.mil/">DTIC Science & Technology</a></p> <p></p> <p>2017-05-01</p> <p>Report Approved for public release; distribution is unlimited. Prepared for Army Terrestrial Environmental Modeling and Intelligence System (ARTEMIS...for the Army Terrestrial Environmental Model - ing and Intelligence System (ARTEMIS) program under Work Item 9K3D08 for the Geospatial Remote...Compatible Use <span class="hlt">Zone</span> APZ Accident Potential <span class="hlt">Zone</span> APZ-LZ Accident Potential Zone–Landing <span class="hlt">Zone</span> ARTEMIS Army Terrestrial Environmental Modeling and</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.gpo.gov/fdsys/pkg/CFR-2014-title21-vol8/pdf/CFR-2014-title21-vol8-sec868-5180.pdf','CFR2014'); return false;" href="https://www.gpo.gov/fdsys/pkg/CFR-2014-title21-vol8/pdf/CFR-2014-title21-vol8-sec868-5180.pdf"><span>21 CFR 868.5180 - Rocking <span class="hlt">bed</span>.</span></a></p> <p><a target="_blank" href="http://www.gpo.gov/fdsys/browse/collectionCfr.action?selectedYearFrom=2014&page.go=Go">Code of Federal Regulations, 2014 CFR</a></p> <p></p> <p>2014-04-01</p> <p>... 21 Food and Drugs 8 2014-04-01 2014-04-01 false Rocking <span class="hlt">bed</span>. 868.5180 Section 868.5180 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES ANESTHESIOLOGY DEVICES Therapeutic Devices § 868.5180 Rocking <span class="hlt">bed</span>. (a) Identification. A rocking <span class="hlt">bed</span> is a device...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.gpo.gov/fdsys/pkg/CFR-2012-title21-vol8/pdf/CFR-2012-title21-vol8-sec868-5180.pdf','CFR2012'); return false;" href="https://www.gpo.gov/fdsys/pkg/CFR-2012-title21-vol8/pdf/CFR-2012-title21-vol8-sec868-5180.pdf"><span>21 CFR 868.5180 - Rocking <span class="hlt">bed</span>.</span></a></p> <p><a target="_blank" href="http://www.gpo.gov/fdsys/browse/collectionCfr.action?selectedYearFrom=2012&page.go=Go">Code of Federal Regulations, 2012 CFR</a></p> <p></p> <p>2012-04-01</p> <p>... 21 Food and Drugs 8 2012-04-01 2012-04-01 false Rocking <span class="hlt">bed</span>. 868.5180 Section 868.5180 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES ANESTHESIOLOGY DEVICES Therapeutic Devices § 868.5180 Rocking <span class="hlt">bed</span>. (a) Identification. A rocking <span class="hlt">bed</span> is a device...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.gpo.gov/fdsys/pkg/CFR-2013-title21-vol8/pdf/CFR-2013-title21-vol8-sec868-5180.pdf','CFR2013'); return false;" href="https://www.gpo.gov/fdsys/pkg/CFR-2013-title21-vol8/pdf/CFR-2013-title21-vol8-sec868-5180.pdf"><span>21 CFR 868.5180 - Rocking <span class="hlt">bed</span>.</span></a></p> <p><a target="_blank" href="http://www.gpo.gov/fdsys/browse/collectionCfr.action?selectedYearFrom=2013&page.go=Go">Code of Federal Regulations, 2013 CFR</a></p> <p></p> <p>2013-04-01</p> <p>... 21 Food and Drugs 8 2013-04-01 2013-04-01 false Rocking <span class="hlt">bed</span>. 868.5180 Section 868.5180 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES ANESTHESIOLOGY DEVICES Therapeutic Devices § 868.5180 Rocking <span class="hlt">bed</span>. (a) Identification. A rocking <span class="hlt">bed</span> is a device...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19680000278','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19680000278"><span>Characteristics of fluidized-packed <span class="hlt">beds</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Gabor, J. D.; Mecham, W. J.</p> <p>1968-01-01</p> <p>Study of fluidized-packed <span class="hlt">bed</span> includes investigation of heat transfer, solids-gas mixing, and elutriation characteristics. A fluidized-packed <span class="hlt">bed</span> is a system involving the fluidization of small particles in the voids of a packed <span class="hlt">bed</span> of larger nonfluidized particles.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/biblio/87738','DOE-PATENT-XML'); return false;" href="http://www.osti.gov/scitech/biblio/87738"><span>Fluidization quality analyzer for fluidized <span class="hlt">beds</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/doepatents">DOEpatents</a></p> <p>Daw, C.S.; Hawk, J.A.</p> <p>1995-07-25</p> <p>A control loop and fluidization quality analyzer for a fluidized <span class="hlt">bed</span> utilizes time varying pressure drop measurements. A fast-response pressure transducer measures the overall <span class="hlt">bed</span> pressure drop, or over some segment of the <span class="hlt">bed</span>, and the pressure drop signal is processed to produce an output voltage which changes with the degree of fluidization turbulence. 9 figs.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/870000','DOE-PATENT-XML'); return false;" href="http://www.osti.gov/scitech/servlets/purl/870000"><span>Fluidization quality analyzer for fluidized <span class="hlt">beds</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/doepatents">DOEpatents</a></p> <p>Daw, C. Stuart; Hawk, James A.</p> <p>1995-01-01</p> <p>A control loop and fluidization quality analyzer for a fluidized <span class="hlt">bed</span> utilizes time varying pressure drop measurements. A fast-response pressure transducer measures the overall <span class="hlt">bed</span> pressure drop, or over some segment of the <span class="hlt">bed</span>, and the pressure drop signal is processed to produce an output voltage which changes with the degree of fluidization turbulence.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.gpo.gov/fdsys/pkg/CFR-2011-title21-vol8/pdf/CFR-2011-title21-vol8-sec868-5180.pdf','CFR2011'); return false;" href="https://www.gpo.gov/fdsys/pkg/CFR-2011-title21-vol8/pdf/CFR-2011-title21-vol8-sec868-5180.pdf"><span>21 CFR 868.5180 - Rocking <span class="hlt">bed</span>.</span></a></p> <p><a target="_blank" href="http://www.gpo.gov/fdsys/browse/collectionCfr.action?selectedYearFrom=2011&page.go=Go">Code of Federal Regulations, 2011 CFR</a></p> <p></p> <p>2011-04-01</p> <p>... 21 Food and Drugs 8 2011-04-01 2011-04-01 false Rocking <span class="hlt">bed</span>. 868.5180 Section 868.5180 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES ANESTHESIOLOGY DEVICES Therapeutic Devices § 868.5180 Rocking <span class="hlt">bed</span>. (a) Identification. A rocking <span class="hlt">bed</span> is a device...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=hotel&id=EJ982479','ERIC'); return false;" href="http://eric.ed.gov/?q=hotel&id=EJ982479"><span><span class="hlt">Bed</span> Bug Education for School Maintenance</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Henriksen, Missy</p> <p>2012-01-01</p> <p><span class="hlt">Bed</span> bugs are a growing problem, not only in homes and hotels, but also in schools and colleges. Facility administrators and staff need to understand the <span class="hlt">bed</span> bug resurgence and develop best practices to deal with an infestation. In this article, the author offers tips for preventing and treating <span class="hlt">bed</span> bugs in school and university settings.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://eric.ed.gov/?q=bed+AND+bug&id=EJ982479','ERIC'); return false;" href="https://eric.ed.gov/?q=bed+AND+bug&id=EJ982479"><span><span class="hlt">Bed</span> Bug Education for School Maintenance</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Henriksen, Missy</p> <p>2012-01-01</p> <p><span class="hlt">Bed</span> bugs are a growing problem, not only in homes and hotels, but also in schools and colleges. Facility administrators and staff need to understand the <span class="hlt">bed</span> bug resurgence and develop best practices to deal with an infestation. In this article, the author offers tips for preventing and treating <span class="hlt">bed</span> bugs in school and university settings.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2014RMRE...47...57L','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2014RMRE...47...57L"><span>Laboratory and In Situ Simulation Tests of the Excavation Damaged <span class="hlt">Zone</span> Around Galleries in Opalinus Clay</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Labiouse, Vincent; Vietor, Tim</p> <p>2014-01-01</p> <p>In the context of nuclear waste disposal in clay formations, laboratory and in situ simulation experiments were performed to study at reduced scale the excavation damaged <span class="hlt">zone</span> (EDZ) around tunnels in the indurated Opalinus Clay at Mont Terri, Switzerland. In the laboratory, thick-walled hollow cylindrical specimens were subjected to a mechanical unloading mimicking a gallery excavation. In samples cored parallel to <span class="hlt">bedding</span>, cracks sub-parallel to the <span class="hlt">bedding</span> planes open and lead to a buckling failure in two regions that extend from the borehole in the direction normal to <span class="hlt">bedding</span>. The behaviour is clearly anisotropic. On the other hand, in experiments performed on specimens cored perpendicular to <span class="hlt">bedding</span>, there is no indication of failure around the hole and the response of the hollow cylinder sample is mainly isotropic. The in situ experiment at Mont Terri which consisted in the overcoring of a resin-injected borehole that follows the <span class="hlt">bedding</span> strike of the Opalinus Clay showed a striking similarity between the induced damaged <span class="hlt">zone</span> and the fracture pattern observed in the hollow cylinder tests on samples cored parallel to <span class="hlt">bedding</span> and such a <span class="hlt">bedding</span> controlled "Excavation" Damaged <span class="hlt">Zone</span> is as well consistent with the distinct fracture patterns observed at Mont Terri depending on the orientation of holes/galleries with respect to the <span class="hlt">bedding</span> planes. Interestingly, the damaged <span class="hlt">zone</span> observed in the hollow cylinder tests on samples cored parallel to <span class="hlt">bedding</span> and in situ around URL galleries is found to develop in reverse directions in Boom Clay (Mol) and in Opalinus Clay (Mont Terri). This most probably results from different failure mechanisms, i.e. shear failure along conjugated planes in the plastic Boom Clay, but <span class="hlt">bedding</span> plane splitting and buckling in the indurated Opalinus Clay.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2016EGUGA..18.5417D','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2016EGUGA..18.5417D"><span>Oxygen consumption along <span class="hlt">bed</span> forms under losing and gaining streamflow conditions</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>De Falco, Natalie; Arnon, Shai; Boano, Fulvio</p> <p>2016-04-01</p> <p>Recent studies have demonstrated that <span class="hlt">bed</span> forms are the most significant geomorphological structure that drives hyporheic exchange and biogeochemical processes in stream networks. Other studies also demonstrated that due to the hyporheic flow patterns within <span class="hlt">bed</span> form, biogeochemical processes do not occur uniformly along and within the <span class="hlt">bed</span> forms. The objective of this work was to systematically evaluate how losing or gaining flow conditions affect oxygen consumption by biofilm along sandy <span class="hlt">bed</span> forms. We measured the effects of losing and gaining flow conditions on oxygen consumption by combining modeling and experiments in a novel laboratory flume system that enable the control of losing and gaining fluxes. Oxygen consumption was measured after growing a benthic biofilm fed with Sodium Benzoate (as a carbon source) and measuring the distribution of oxygen in the streambed with microelectrodes. The experimental results were analyzed using a novel code that calculates vertical profiles of reaction rates in the presence of hyporheic water fluxes. These experimental observations and modeling revealed that oxygen distribution varied along the <span class="hlt">bed</span> forms. The <span class="hlt">zone</span> of oxygen consumption (i.e. depth of penetration) was the largest at the upstream side of the <span class="hlt">bed</span> form and the smallest in the lee side (at the lowest part of the <span class="hlt">bed</span> form), regardless of the flow conditions. Also, the <span class="hlt">zone</span> of oxygen consumption was the largest under losing conditions, the smallest under gaining conditions, and in-between under neutral conditions. The distribution of oxygen consumption rates determined with our new model will be also discussed. Our preliminary results enable us to show the importance of the coupling between flow conditions and oxygen consumption along <span class="hlt">bed</span> forms and are expected to improve our understanding of nutrient cycling in streams.</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_11");'>11</a></li> <li><a href="#" onclick='return showDiv("page_12");'>12</a></li> <li class="active"><span>13</span></li> <li><a href="#" onclick='return showDiv("page_14");'>14</a></li> <li><a href="#" onclick='return showDiv("page_15");'>15</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_13 --> <div id="page_14" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_12");'>12</a></li> <li><a href="#" onclick='return showDiv("page_13");'>13</a></li> <li class="active"><span>14</span></li> <li><a href="#" onclick='return showDiv("page_15");'>15</a></li> <li><a href="#" onclick='return showDiv("page_16");'>16</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="261"> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/374619','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/374619"><span>Lignite air-steam gasification in the fluidized <span class="hlt">bed</span> of iron-containing slag catalysts</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Kuznetsov, B.N.; Shchipko, M.L.; Golovin, Yu.</p> <p>1995-12-01</p> <p>The influence of fluidized <span class="hlt">bed</span> of iron-containing slag particles on air-steam gasification of powdered Kansk-Achinsk lignite in entrained flow was studied in pilot installation with productivity about 60 kg per hour. Slag of Martin process and boiler slag were used as catalytic active materials until their complete mechanical attrition. Two following methods of catalytic gasification of lignite were compared: the partial gasification in stationary fluidized <span class="hlt">bed</span> of slag particles with degree of fuel conversion 40-70% and complete gasification in circulating <span class="hlt">bed</span> of slag particles. In the first case only the most reactive part of fuel is gasified with the simultaneously formation of porous carbon residue with good sorption ability. It was found the catalytic fluidized <span class="hlt">bed</span> improves heat transfer from combustion to reduction <span class="hlt">zone</span> of gas-generator and increases the rate of fuel conversion at the temperature range 900-1000{degrees}C. At these temperatures the degree of conversion is depended considerably on the duration time of fuel particles in the catalytic fluidized <span class="hlt">bed</span>. The influence of catalytic fluidized <span class="hlt">bed</span> height and velocity of reaction mixture on the temperature profiles in the gas-generator was studied. The optimal relationship was found between the fluidized <span class="hlt">bed</span> height and velocity of flow which makes possible to produce the gas with higher calorific value at maximum degree of fuel conversion.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/5974683','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/5974683"><span>Experimental study of large-scale pulsations of a fluidized <span class="hlt">bed</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Glinskii, V.A.; Protod'yakonov, I.O.; Chesnokov, Yu.G.</p> <p>1980-01-01</p> <p>In experimental investigations of the hydrodynamics of fluidized <span class="hlt">beds</span>, study of large- and small-scale pulsations of the most important characteristics of the fluidized <span class="hlt">bed</span>: voidage, hydraulic resistance, velocities of the gaseous and solid phases, etc., is of considerable interest. The character of these pulsations is determined by the heterogeneity of the structure of the fluidized <span class="hlt">bed</span>, due to the presence of channels, bubbles, stagnant <span class="hlt">zones</span>, and circulation currents. The object of the present work was experimental study of fluctuations of the height h of the surface of a fluidized <span class="hlt">bed</span>, with simultaneous recording of the corresponding fluctuations of the hydraulic resistance ..delta..P of the <span class="hlt">bed</span>. The existence of a direct connection between large-scale pulsations of the hydraulic resistance ..delta..P of the fluidized <span class="hlt">bed</span> and large-scale pulsations of the <span class="hlt">bed</span> height h is demonstrated in the paper. It is proved on this basis that large-scale pulsations of h and ..delta..P can be described by equations of the same type. The coefficients of the equation are determined from experimental data on pulsations, and its solutions for different fluidization regimes are analyzed.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/26076809','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/26076809"><span>Environmental challenges of identifying a patient <span class="hlt">zone</span> and the healthcare <span class="hlt">zone</span> in a crowded Vietnamese hospital.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Salmon, S; McLaws, M L</p> <p>2015-09-01</p> <p>The application of the World Health Organization (WHO) 'My five moments for hand hygiene' was designed for a healthcare environment with levels of <span class="hlt">bed</span> spacing and occupancy normally present in developed countries. However, overcrowded healthcare facilities in Vietnam and other challenged settings require strategies to adapt 'My five moments for hand hygiene' in order to meet their situational needs. To identify the environmental challenges to compliance with the 'My five moments' indications. Overt observation using the WHO hand hygiene audit tool was conducted in two clinical departments at a large teaching hospital in Vietnam. Clinical practice movements and the 'My five moments' indications were detailed diagrammatically. Sharing a <span class="hlt">bed</span> is widely practised outside the intensive care unit in this country, which makes visualizing a patient <span class="hlt">zone</span> according to the WHO instructions difficult. In addition, decreased spacing between shared <span class="hlt">beds</span> in overcrowded conditions results in the close proximity of patients to the shared healthcare <span class="hlt">zone</span>. These two barriers prevent attempts to apply the 'My five moments' correctly. Undertaking hand hygiene and conducting audits in accordance with the 'My five moments for hand hygiene' assumes a separation of patients and individual healthcare <span class="hlt">zones</span>. The barriers to applying 'My five moments' include the lack of distinct <span class="hlt">zones</span> between patients and their shared healthcare <span class="hlt">zone</span>, and amelioration requires resources beyond current chronic resource challenges. Until environmental resources can meet the western standards required for application of the 'Five moments' principle, healthcare workers urgently need detailed clarification of modifications that would empower them to comply. Copyright © 2015 The Healthcare Infection Society. Published by Elsevier Ltd. All rights reserved.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19820013377','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19820013377"><span>Avionics test <span class="hlt">bed</span> development plan</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Harris, L. H.; Parks, J. M.; Murdock, C. R.</p> <p>1981-01-01</p> <p>The plan is for a facility for the early investigation and evaluation of new concepts for the control of large space structures, orbiter attached flex body experiments, and orbiter enhancements. This plan outlines a distributed data processing facility that will utilize the current JSC laboratory resources for the test <span class="hlt">bed</span> development. The future studies required for implementation, the management system for project control, and the baseline system configuration are described.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/6963987','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/6963987"><span>Pulsed atmospheric fluidized <span class="hlt">bed</span> combustion</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Not Available</p> <p>1992-05-01</p> <p>During this first quarter, a lab-scale water-cooled pulse combustor was designed, fabricated, and integrated with old pilot-scale PAFBC test systems. Characterization tests on this pulse combustor firing different kinds of fuel -- natural gas, pulverized coal and fine coal -- were conducted (without fluidized <span class="hlt">bed</span> operation) for the purpose of finalizing PAFBC full-scale design. Steady-state tests were performed. Heat transfer performance and combustion efficiency of a coal-fired pulse combustor were evaluated.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2004AGUFM.H23G..03T','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2004AGUFM.H23G..03T"><span>Hyporheic Exchange in Gravel-<span class="hlt">Bed</span> Rivers with Pool-Riffle Morphology: A 3D Model</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Tonina, D.; Buffington, J. M.</p> <p>2004-12-01</p> <p>The hyporheic <span class="hlt">zone</span> is a saturated band of sediment that surrounds river flow and forms a linkage between the river and the aquifer. It is a rich ecotone where benthic, hyporheic, and groundwater species temporarily or permanently reside. Head gradients along the streambed draw river water into the hyporheic <span class="hlt">zone</span> and expel pore water into the stream. This process, known as hyporheic exchange, is important for delivering nutrients, oxygen and other solutes to the sediment, and for washing away waste products to support this ecotone. It is an essential component of the carbon and nitrogen cycles, and it controls in-stream contaminant transport. Although hyporheic exchange has been studied in sand-<span class="hlt">bed</span> rivers with two-dimensional dune morphology, few studies have been conducted for gravel-<span class="hlt">bed</span> rivers with three-dimensional pool-riffle geometry. The hyporheic <span class="hlt">zone</span> of gravel-<span class="hlt">bed</span> rivers is particularly important for salmonids, many of which are currently at risk world wide. Salmon and trout lay their eggs within the hyporheic <span class="hlt">zone</span> for incubation. After hatching, the alevins live in the gravel before emerging into the stream. The upwelling and downwelling hyporheic fluxes are intense in these streams due to the highly permeable sediment and strong head variations forced by shallow flow over high-amplitude <span class="hlt">bed</span> forms. Moreover, gravel-<span class="hlt">bed</span> rivers show a wide range of flow regimes that change seasonally and have strong effects on hyporheic exchange. To study this exchange, we used four sets of pool-riffle geometries in twelve recirculating flume experiments. We kept a constant <span class="hlt">bed</span>-form wavelength, but changed the <span class="hlt">bed</span>-form amplitude and imposed three discharges, covering a wide range of hydraulic and geometric characteristics. Hyporheic exchange was predicted from a three-dimensional model based on bedform-induced pumping transport, where the boundary head profile is the pressure head distribution at the sediment interface, measured with an array of mini-piezometers buried within</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/6426333','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/6426333"><span>Rivesville multicell fluidized <span class="hlt">bed</span> boiler</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Not Available</p> <p>1981-03-01</p> <p>One objective of the experimental MFB at Rivesville, WV, was the evaluation of alternate feed systems for injecting coal and limestone into a fluidized <span class="hlt">bed</span>. A continuous, uniform feed flow to the fluid <span class="hlt">bed</span> is essential in order to maintain stable operations. The feed system originally installed on the MFB was a gravity feed system with an air assist to help overcome the back pressure created by the fluid <span class="hlt">bed</span>. The system contained belt, vibrating, and rotary feeders which have been proven adequate in other material handling applications. This system, while usable, had several operational and feeding problems during the MFB testing. A major portion of these problems occurred because the coal and limestone feed control points - a belt feeder and rotary feeder, respectively - were pressurized in the air assist system. These control points were not designed for pressurized service. An alternate feed system which could accept feed from the two control points, split the feed into six equal parts and eliminate the problems of the pressurized system was sought. An alternate feed system designed and built by the Fuller Company was installed and tested at the Rivesville facility. Fuller feed systems were installed on the north and south side of C cell at the Rivesville facility. The systems were designed to handle 10,000 lb/hr of coal and limestone apiece. The systems were installed in late 1979 and evaluated from December 1979 to December 1980. During this time period, nearly 1000 h of operating time was accumulated on each system.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/10186361','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/10186361"><span>Scaling of pressurized fluidized <span class="hlt">beds</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Guralnik, S.; Glicksman, L.R.</p> <p>1994-10-01</p> <p>The project has two primary objectives. The first is to verify a set of hydrodynamic scaling relationships for commercial pressurized fluidized <span class="hlt">bed</span> combustors (PFBC). The second objective is to investigate solids mixing in pressurized bubbling fluidized <span class="hlt">beds</span>. American Electric Power`s (AEP) Tidd combined-cycle demonstration plant will provide time-varying pressure drop data to serve as the basis for the scaling verification. The verification will involve demonstrating that a properly scaled cold model and the Tidd PFBC exhibit hydrodynamically similar behavior. An important issue in PFBC design is the spacing of fuel feed ports. The feed spacing is dictated by the fuel distribution and the mixing characteristics within the <span class="hlt">bed</span>. After completing the scaling verification, the cold model will be used to study the characteristics of PFBCs. A thermal tracer technique will be utilized to study mixing both near the fuel feed region and in the far field. The results allow the coal feed and distributor to be designed for optimal heating.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://ntrs.nasa.gov/search.jsp?R=19850000544&hterms=LOOKING+DISTRIBUTOR&qs=N%3D0%26Ntk%3DAll%26Ntx%3Dmode%2Bmatchall%26Ntt%3DLOOKING%2BFOR%2BDISTRIBUTOR','NASA-TRS'); return false;" href="https://ntrs.nasa.gov/search.jsp?R=19850000544&hterms=LOOKING+DISTRIBUTOR&qs=N%3D0%26Ntk%3DAll%26Ntx%3Dmode%2Bmatchall%26Ntt%3DLOOKING%2BFOR%2BDISTRIBUTOR"><span>Agglomeration-Free Distributor for Fluidized <span class="hlt">Beds</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Ouyang, F.; Sinica, A.; Levenspiel, O.</p> <p>1986-01-01</p> <p>New gas distributor for fluidized <span class="hlt">beds</span> prevents hot particles from reacting on it and forming hard crust. In reduction of iron ore in fluidized <span class="hlt">bed</span>, ore particles do not sinter on distributor and perhaps clog it or otherwise interfere with gas flow. Distributor also relatively cool. In fluidized-<span class="hlt">bed</span> production of silicon, inflowing silane does not decompose until within <span class="hlt">bed</span> of hot silicon particles and deposits on them. Plates of spiral distributor arranged to direct incoming gas into spiral flow. Turbulence in flow reduces frequency of contact between fluidized-<span class="hlt">bed</span> particles and distributor.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://ntrs.nasa.gov/search.jsp?R=19850000544&hterms=levenspiel&qs=N%3D0%26Ntk%3DAll%26Ntx%3Dmode%2Bmatchall%26Ntt%3Dlevenspiel','NASA-TRS'); return false;" href="https://ntrs.nasa.gov/search.jsp?R=19850000544&hterms=levenspiel&qs=N%3D0%26Ntk%3DAll%26Ntx%3Dmode%2Bmatchall%26Ntt%3Dlevenspiel"><span>Agglomeration-Free Distributor for Fluidized <span class="hlt">Beds</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Ouyang, F.; Sinica, A.; Levenspiel, O.</p> <p>1986-01-01</p> <p>New gas distributor for fluidized <span class="hlt">beds</span> prevents hot particles from reacting on it and forming hard crust. In reduction of iron ore in fluidized <span class="hlt">bed</span>, ore particles do not sinter on distributor and perhaps clog it or otherwise interfere with gas flow. Distributor also relatively cool. In fluidized-<span class="hlt">bed</span> production of silicon, inflowing silane does not decompose until within <span class="hlt">bed</span> of hot silicon particles and deposits on them. Plates of spiral distributor arranged to direct incoming gas into spiral flow. Turbulence in flow reduces frequency of contact between fluidized-<span class="hlt">bed</span> particles and distributor.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/1213461','DOE-PATENT-XML'); return false;" href="http://www.osti.gov/scitech/servlets/purl/1213461"><span>Method and apparatus for a combination moving <span class="hlt">bed</span> thermal treatment reactor and moving <span class="hlt">bed</span> filter</span></a></p> <p><a target="_blank" href="http://www.osti.gov/doepatents">DOEpatents</a></p> <p>Badger, Phillip C.; Dunn, Jr., Kenneth J.</p> <p>2015-09-01</p> <p>A moving <span class="hlt">bed</span> gasification/thermal treatment reactor includes a geometry in which moving <span class="hlt">bed</span> reactor particles serve as both a moving <span class="hlt">bed</span> filter and a heat carrier to provide thermal energy for thermal treatment reactions, such that the moving <span class="hlt">bed</span> filter and the heat carrier are one and the same to remove solid particulates or droplets generated by thermal treatment processes or injected into the moving <span class="hlt">bed</span> filter from other sources.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/653302','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/653302"><span>Adsorption dynamics of a layered <span class="hlt">bed</span> PSA for H{sub 2} recovery from coke oven gas</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Yang, J.; Lee, C.H.</p> <p>1998-06-01</p> <p>The adsorption dynamics of a layered <span class="hlt">bed</span> packed with activated carbon and zeolite 5A were studied experimentally and theoretically through breakthrough experiments and two-<span class="hlt">bed</span> pressure swing adsorption (PSA) processes by using coke oven gas (56.4 vol.% H{sub 2}; 26.6 vol.% CH{sub 4}; 8.4 vol.% CO; 5.5 vol.% N{sub 2}; and 3.1 vol.% CO{sub 2}). The results of breakthrough curves of a layered <span class="hlt">bed</span> showed an intermediate behavior of those of zeolite-5A <span class="hlt">bed</span> and activated carbon <span class="hlt">bed</span>, because each concentration front propagates with its own wavefront velocity in each layer by a different adsorption equilibrium. Since a fast and dispersed mass-transfer <span class="hlt">zone</span> of CO in the zeolite layer of a layered <span class="hlt">bed</span> leads to a long leading front of the N{sub 2} wavefront, controlling the leading wavefront of the N{sub 2} plays a very important role in obtaining a high-purity product and in determining the optimum carbon ratio of a PSA process for H{sub 2} recovery from coke oven gas. The layered <span class="hlt">bed</span> PSA process was simulated in a simplified form of two single-adsorbent <span class="hlt">beds</span> linked in series. The dynamic model incorporating mass, energy, and momentum balances agreed well with the experimental data. Concentration profiles inside the adsorption <span class="hlt">bed</span> were also investigated.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/25529634','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/25529634"><span><span class="hlt">Bed</span> bug aggregation pheromone finally identified.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Gries, Regine; Britton, Robert; Holmes, Michael; Zhai, Huimin; Draper, Jason; Gries, Gerhard</p> <p>2015-01-19</p> <p><span class="hlt">Bed</span> bugs have become a global epidemic and current detection tools are poorly suited for routine surveillance. Despite intense research on <span class="hlt">bed</span> bug aggregation behavior and the aggregation pheromone, which could be used as a chemical lure, the complete composition of this pheromone has thus far proven elusive. Here, we report that the <span class="hlt">bed</span> bug aggregation pheromone comprises five volatile components (dimethyl disulfide, dimethyl trisulfide, (E)-2-hexenal, (E)-2-octenal, 2-hexanone), which attract <span class="hlt">bed</span> bugs to safe shelters, and one less-volatile component (histamine), which causes their arrestment upon contact. In infested premises, a blend of all six components is highly effective at luring <span class="hlt">bed</span> bugs into traps. The trapping of juvenile and adult <span class="hlt">bed</span> bugs, with or without recent blood meals, provides strong evidence that this unique pheromone bait could become an effective and inexpensive tool for <span class="hlt">bed</span> bug detection and potentially their control.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=3320350','PMC'); return false;" href="https://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=3320350"><span><span class="hlt">Bed</span> Bug Infestations in an Urban Environment</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pmc">PubMed Central</a></p> <p>Svoboda, Tomislav J.; De Jong, Iain J.; Kabasele, Karl J.; Gogosis, Evie</p> <p>2005-01-01</p> <p>Until recently, <span class="hlt">bed</span> bugs have been considered uncommon in the industrialized world. This study determined the extent of reemerging <span class="hlt">bed</span> bug infestations in homeless shelters and other locations in Toronto, Canada. Toronto Public Health documented complaints of <span class="hlt">bed</span> bug infestations from 46 locations in 2003, most commonly apartments (63%), shelters (15%), and rooming houses (11%). Pest control operators in Toronto (N = 34) reported treating <span class="hlt">bed</span> bug infestations at 847 locations in 2003, most commonly single-family dwellings (70%), apartments (18%), and shelters (8%). <span class="hlt">Bed</span> bug infestations were reported at 20 (31%) of 65 homeless shelters. At 1 affected shelter, 4% of residents reported having <span class="hlt">bed</span> bug bites. <span class="hlt">Bed</span> bug infestations can have an adverse effect on health and quality of life in the general population, particularly among homeless persons living in shelters. PMID:15829190</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19740011779','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19740011779"><span>Linear test <span class="hlt">bed</span>. Volume 1: Test <span class="hlt">bed</span> no. 1. [aerospike test <span class="hlt">bed</span> with segmented combustor</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p></p> <p>1972-01-01</p> <p>The Linear Test <span class="hlt">Bed</span> program was to design, fabricate, and evaluation test an advanced aerospike test <span class="hlt">bed</span> which employed the segmented combustor concept. The system is designated as a linear aerospike system and consists of a thrust chamber assembly, a power package, and a thrust frame. It was designed as an experimental system to demonstrate the feasibility of the linear aerospike-segmented combustor concept. The overall dimensions are 120 inches long by 120 inches wide by 96 inches in height. The propellants are liquid oxygen/liquid hydrogen. The system was designed to operate at 1200-psia chamber pressure, at a mixture ratio of 5.5. At the design conditions, the sea level thrust is 200,000 pounds. The complete program including concept selection, design, fabrication, component test, system test, supporting analysis and posttest hardware inspection is described.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2002HMR....56...44S','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2002HMR....56...44S"><span>Subtidal and intertidal mussel <span class="hlt">beds</span> ( Mytilus edulis L.) in the Wadden Sea: diversity differences of associated epifauna</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Saier, Bettina</p> <p>2002-04-01</p> <p>In 1997 and 1998, surveys were performed to compare species composition, abundance and diversity of non-attached epifauna (>1 mm) in low intertidal and adjacent shallow subtidal <span class="hlt">zones</span> of three mussel <span class="hlt">beds</span> ( Mytilus edulis L.) near the island of Sylt in the North Sea. The community structure was similar when compared within tidal <span class="hlt">zones</span>: no significant differences in species numbers and abundances were recorded between locations and between years. A comparison between tidal <span class="hlt">zones</span>, however, revealed higher diversity, species densities and total species numbers in the subtidal (per 1,000 cm2: H '=2.0±0.16; 12 ±1 species density; 22 species) than the intertidal <span class="hlt">zone</span> (per 1,000 cm2: H '=0.7±0.27; 6±2 species density; 19 species). Abundances significantly dropped with increasing submergence from 2,052 (±468) m-2 to 1,184 (±475) m-2. This was mainly due to significantly higher densities of both juvenile periwinkles, Littorina littorea, and crabs, Carcinus maenas, in intertidal mussel <span class="hlt">beds</span>. However, many less dominant species were significantly more abundant in subtidal mussel <span class="hlt">beds</span>. This study revealed that in the non-attached epifaunal community of mussel <span class="hlt">beds</span> the tidal level effect within metres was strong, whilst the spatial variability in a much wider (kilometre) range but the same tidal level was negligible. The high epifaunal diversity in the subtidal <span class="hlt">zone</span> suggests that the protective measures for mussel <span class="hlt">beds</span> against the effects of mussel fishery should be extended from the intertidal to the subtidal <span class="hlt">zone</span>, if the integrity of the mussel <span class="hlt">bed</span> community in the Wadden Sea National Park is to be maintained.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2000SPIE.4084..682P','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2000SPIE.4084..682P"><span>GPR study of <span class="hlt">bedding</span> planes, fractures, and cavities in limestone</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Pipan, M.; Baradello, L.; Forte, E.; Prizzon, A.</p> <p>2000-04-01</p> <p>We performed a multi-fold GPR study at a Cretaceous-Tertiary (K-T) outcrop in limestone layers of the Peri-Adriatic carbonatic platform, Italy). Primary objective of the study was imaging of the K-T contact and mapping of localized depth variations in a general framework of homoclinical limestone layers. A secondary objective was the study of faults, fractures and cavities of interest for engineering purposes. A combination of 2-D and 3-D multifold techniques was used to image and map structural and stratigraphic features. A 200 sqm grid was surveyed with 1 meter cross-line spacing and 5 cm in- line trace interval. The K-T contact is electromagnetically transparent, and it is actually deduced from paleontologic evidence. Due to the homoclinal trend, K-T topography is reconstructed from the <span class="hlt">bedding</span> planes bounding the contact. Fractures antithetic to <span class="hlt">bedding</span> planes are imaged by 2-D stack and migrated profiles. Part of the fractures can be considered small transtensional faults. The results obtained provide the first geophysical evidence of small-scale transtensive deformation in the area. Curvilinear radar reflector, intersecting the homoclinal <span class="hlt">bedding</span> planes, are imaged in faulted <span class="hlt">zones</span> and are possibly related to limestone buildups. A fractured rock volume develops into a cavity with average estimated section of a 4 sqm.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2011AGUFM.C23D0534C','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2011AGUFM.C23D0534C"><span>Origin of Subglacial Debris-<span class="hlt">bed</span> Friction</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Cohen, D. O.; Byers, J.; Iverson, N. R.</p> <p>2011-12-01</p> <p>Numerical models of glaciers sliding on hard <span class="hlt">beds</span> assume that basal flow resistance is controlled entirely by viscous drag on bedrock bumps. However, observations and measurements indicate that basal ice can contain large concentrations of rock debris that exert significant frictional resistance: for example, locally high shear stress (˜500 kPa) was measured below 200 m of ice on a smooth rock tablet at the <span class="hlt">bed</span> of Engabreen, Norway. This value of shear stress is an order of magnitude greater than estimated by leading theories. To better understand the origin of debris-<span class="hlt">bed</span> friction, we built a new laboratory apparatus that recorded the contact force between a clast and a hard <span class="hlt">bed</span> as a function of ice velocity toward the <span class="hlt">bed</span>. An independent experiment with the same apparatus in which the clast is isolated from the <span class="hlt">bed</span> was used to obtain the ice viscosity. After correcting for cavity formation and ice flow geometry, results indicate that the contact force between a clast and a hard <span class="hlt">bed</span> is about twice the drag force on the same clast estimated using Stokes's law. This value is insufficient to explain the high debris-<span class="hlt">bed</span> friction measured beneath Engabreen. An alternative explanation is that longitudinal ice extension caused by ice flowing over the rough topography near the smooth rock tablet increased the rate of ice convergence with the <span class="hlt">bed</span> by a factor of 5. Our measurements confirm that debris-<span class="hlt">bed</span> friction is controlled by contact forces caused by flow of ice towards the <span class="hlt">bed</span> due to basal melting and longitudinal ice extension. This form of frictional drag has yet to be included in models of ice flow. Inclusion of debris-<span class="hlt">bed</span> friction may prove important to properly estimating rates of basal sliding, energy dissipation and meltwater production at the <span class="hlt">bed</span>, and, more importantly, to quantifying the stick-slip behavior of hard-<span class="hlt">bedded</span> glaciers.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/of/1983/0726/report.pdf','USGSPUBS'); return false;" href="https://pubs.usgs.gov/of/1983/0726/report.pdf"><span>Distribution of bromine in <span class="hlt">bedded</span> halite in the Green River Formation, southwestern Wyoming</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Higley, D.K.</p> <p>1983-01-01</p> <p>The Wilkins Peak Member of the Eocene Green River Formation of southwestern Wyoming contains a series of halite-trona <span class="hlt">beds</span> deposited in ancestral Lake Gosiute. X-ray fluorescence analysis of 311) salt samples from 10 core holes revealed bromine contents ranging from 11 to 174 ppm. The average concentration, corrected to 100 percent sodium chloride, is approximately 80 ppm. The bromine content of most halite <span class="hlt">beds</span> increases from the base upward. Variations or 'spikes' in the bromine profile and reversals of the upward increase in bromine are evidenced within several salt <span class="hlt">beds</span>. Bromine of <span class="hlt">bed</span> 10 salt <span class="hlt">zones</span> exhibits a high degree of correlation laterally. No increase in bromine concentration for correlated salt <span class="hlt">zones</span> was noted from the basin margins to the depositional center in the northeastern part of the study area. A great disparity in salt thickness from the depositional center to the margins suggests stratified lake conditions in which denser, sodium-chloride-saturated bottom brines did not extend to the margins during part of the depositional history of <span class="hlt">bed</span> 10. Paleosalinity trends of Lake Gosiute determined from the bromine distribution include the following: (1) chemically stratified lake conditions with dense, highly saline bottom waters and a fresher water <span class="hlt">zone</span> above during much of the depositional history of the halites, (2) gradual evaporation of lake waters in a closed basin with resultant upward increase in salinity for most intervals studied, and (3) absence of lateral lake-bottom salinity gradients or postdepositional salt alteration as determined by the lateral constancy of bromine concentrations for correlated <span class="hlt">bed</span> 10 halite.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/1196557','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/1196557"><span>Phase 2 Methyl Iodide Deep-<span class="hlt">Bed</span> Adsorption Tests</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Soelberg, Nick; Watson, Tony</p> <p>2014-09-01</p> <p>Nuclear fission produces fission products (FPs) and activation products, including iodine-129, which could evolve into used fuel reprocessing facility off-gas systems, and could require off-gas control to limit air emissions to levels within acceptable emission limits. Research, demonstrations, and some reprocessing plant experience have indicated that diatomic iodine can be captured with efficiencies high enough to meet regulatory requirements. Research on the capture of organic iodides has also been performed, but to a lesser extent. Several questions remain open regarding the capture of iodine bound in organic compounds. Deep-<span class="hlt">bed</span> methyl iodide adsorption testing has progressed according to a multi-laboratory methyl iodide adsorption test plan. This report summarizes the second phase of methyl iodide adsorption work performed according to this test plan using the deep-<span class="hlt">bed</span> iodine adsorption test system at the Idaho National Laboratory (INL), performed during the second half of Fiscal Year (FY) 2014. Test results continue to show that methyl iodide adsorption using AgZ can achieve total iodine decontamination factors (DFs, ratios of uncontrolled and controlled total iodine levels) above 1,000, until breakthrough occurred. However, mass transfer <span class="hlt">zone</span> depths are deeper for methyl iodide adsorption compared to diatomic iodine (I2) adsorption. Methyl iodide DFs for the Ag Aerogel test adsorption efficiencies were less than 1,000, and the methyl iodide mass transfer <span class="hlt">zone</span> depth exceeded 8 inches. Additional deep-<span class="hlt">bed</span> testing and analyses are recommended to (a) expand the data base for methyl iodide adsorption under various conditions specified in the methyl iodide test plan, and (b) provide more data for evaluating organic iodide reactions and reaction byproducts for different potential adsorption conditions.</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_12");'>12</a></li> <li><a href="#" onclick='return showDiv("page_13");'>13</a></li> <li class="active"><span>14</span></li> <li><a href="#" onclick='return showDiv("page_15");'>15</a></li> <li><a href="#" onclick='return showDiv("page_16");'>16</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_14 --> <div id="page_15" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_13");'>13</a></li> <li><a href="#" onclick='return showDiv("page_14");'>14</a></li> <li class="active"><span>15</span></li> <li><a href="#" onclick='return showDiv("page_16");'>16</a></li> <li><a href="#" onclick='return showDiv("page_17");'>17</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="281"> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/28462302','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/28462302"><span>The Safety of Hospital <span class="hlt">Beds</span>: Ingress, Egress, and In-<span class="hlt">Bed</span> Mobility.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Morse, Janice M; Gervais, Pierre; Pooler, Charlotte; Merryweather, Andrew; Doig, Alexa K; Bloswick, Donald</p> <p>2015-01-01</p> <p>To explore the safety of the standard and the low hospital <span class="hlt">bed</span>, we report on a microanalysis of 15 patients' ability to ingress, move about the <span class="hlt">bed</span>, and egress. The 15 participants were purposefully selected with various disabilities. <span class="hlt">Bed</span> conditions were randomized with side rails up or down and one low <span class="hlt">bed</span> with side rails down. We explored the patients' use of the side rails, <span class="hlt">bed</span> height, ability to lift their legs onto the mattress, and ability to turn, egress, and walk back to the chair. The standard <span class="hlt">bed</span> was too high for some participants, both for ingress and egress. Side rails were used by most participants when entering, turning in <span class="hlt">bed</span>, and exiting. We recommend that side rails be reconsidered as a means to facilitate in-<span class="hlt">bed</span> movement, ingress, and egress. Furthermore, single deck height settings for all patients are not optimal. Low <span class="hlt">beds</span> as a safety measure must be re-evaluated.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/1042398','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/1042398"><span>Deep <span class="hlt">Bed</span> Iodine Sorbent Testing FY 2011 Report</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Nick Soelberg; Tony Watson</p> <p>2011-08-01</p> <p>Nuclear fission results in the production of fission products (FPs) and activation products that increasingly interfere with the fission process as their concentrations increase. Some of these fission and activation products tend to evolve in gaseous species during used nuclear fuel reprocessing. Analyses have shown that I129, due to its radioactivity, high potential mobility in the environment, and high longevity (half life of 15.7 million years), can require control efficiencies of up to 1,000x or higher to meet regulatory emission limits. Deep-<span class="hlt">bed</span> iodine sorption testing has been done to evaluate the performance of solid sorbents for capturing iodine in off-gas streams from nuclear fuel reprocessing plants. The objectives of the FY 2011 deep <span class="hlt">bed</span> iodine sorbent testing are: (1) Evaluate sorbents for iodine capture under various conditions of gas compositions and operating temperature (determine sorption efficiencies, capacities, and mass transfer <span class="hlt">zone</span> depths); and (2) Generate data for dynamic iodine sorption modeling. Three tests performed this fiscal year on silver zeolite light phase (AgZ-LP) sorbent are reported here. Additional tests are still in progress and can be reported in a revision of this report or a future report. Testing was somewhat delayed and limited this year due to initial activities to address some questions of prior testing, and due to a period of maintenance for the on-line GC. Each test consisted of (a) flowing a synthetic blend of gases designed to be similar to an aqueous dissolver off-gas stream over the sorbent contained in three separate <span class="hlt">bed</span> segments in series, (b) measuring each <span class="hlt">bed</span> inlet and outlet gas concentrations of iodine and methyl iodide (the two surrogates of iodine gas species considered most representative of iodine species expected in dissolver off-gas), (c) operating for a long enough time to achieve breakthrough of the iodine species from at least one (preferably the first two) <span class="hlt">bed</span> segments, and (d) post-test purging</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2008P%26SS...56..420M','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2008P%26SS...56..420M"><span>The Berlin emissivity database (<span class="hlt">BED</span>)</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Maturilli, A.; Helbert, J.; Moroz, L.</p> <p>2008-03-01</p> <p>Remote-sensing infrared spectroscopy is the principal field of investigation for planetary surfaces composition. Past, present and future missions to the solar system bodies include in their payload, instruments measuring the emerging radiation in the infrared range. Apart from measuring the reflected radiance, more and more spacecrafts are equipped with instruments measuring directly the emitted radiation from the planetary surface. The emitted radiation is not only a function of the composition of the material but also of its texture and especially the grain size distribution. For the interpretation of the measured data an emissivity spectral library of planetary analogue materials in grain size fractions appropriate for planetary surfaces is needed. The Berlin emissivity database (<span class="hlt">BED</span>) presented here is focused on relatively fine-grained size separates, providing thereby a realistic basis for the interpretation of thermal emission spectra of planetary regoliths. The <span class="hlt">BED</span> is therefore complimentary to existing thermal emission libraries, like the ASU library for example. <span class="hlt">BED</span> currently contains emissivity spectra of plagioclase and potassium feldspars, low Ca and high Ca pyroxenes, olivine, elemental sulfur, Martian analogue minerals and volcanic soils, and a lunar highland soil sample measured in the wavelength range from 7 to 22 μm as a function of particle size. For each sample we measured the spectra of four particle size separates ranging from <25 to 250 μm. The device we used is built at DLR (Berlin) and is coupled to a Fourier-transform infrared spectrometer Bruker IFS 88 purged with dry air and equipped with a nitrogen-cooled MCT detector. All spectra were acquired with a spectral resolution of 4 cm -1. We are currently working on upgrading our emissivity facility. A new spectrometer (Bruker VERTEX 80 V) and new detectors will allow us to measure the emissivity of samples in the wavelength range from 1 to 50 μm in a vacuum environment. This will be</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/5421546','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/5421546"><span>Fluidized <span class="hlt">bed</span> charcoal particle production system</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Sowards, N.K.</p> <p>1985-04-09</p> <p>A fluidized <span class="hlt">bed</span> charcoal particle production system, including apparatus and method, wherein pieces of combustible waste, such as sawdust, fragments of wood, etc., are continuously disposed within a fluidized <span class="hlt">bed</span> of a pyrolytic vessel. Preferably, the fluidized <span class="hlt">bed</span> is caused to reach operating temperatures by use of an external pre-heater. The fluidized <span class="hlt">bed</span> is situated above an air delivery system at the bottom of the vessel, which supports pyrolysis within the fluidized <span class="hlt">bed</span>. Charcoal particles are thus formed within the <span class="hlt">bed</span> from the combustible waste and are lifted from the <span class="hlt">bed</span> and placed in suspension above the <span class="hlt">bed</span> by forced air passing upwardly through the <span class="hlt">bed</span>. The suspended charcoal particles and the gaseous medium in which the particles are suspended are displaced from the vessel into a cyclone mechanism where the charcoal particles are separated. The separated charcoal particles are quenched with water to terminate all further charcoal oxidation. The remaining off-gas is burned and, preferably, the heat therefrom used to generate steam, kiln dry lumber, etc. Preferably, the <span class="hlt">bed</span> material is continuously recirculated and purified by removing tramp material.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19910011921','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19910011921"><span>Advanced expander test <span class="hlt">bed</span> program</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Masters, A. I.; Mitchell, J. C.</p> <p>1991-01-01</p> <p>The Advanced Expander Test <span class="hlt">Bed</span> (AETB) is a key element in NASA's Chemical Transfer Propulsion Program for development and demonstration of expander cycle oxygen/hydrogen engine technology component technology for the next space engine. The AETB will be used to validate the high-pressure expander cycle concept, investigate system interactions, and conduct investigations of advanced missions focused components and new health monitoring techniques. The split-expander cycle AETB will operate at combustion chamber pressures up to 1200 psia with propellant flow rates equivalent to 20,000 lbf vacuum thrust.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19920011029','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19920011029"><span>Advanced expander test <span class="hlt">bed</span> engine</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Mitchell, J. P.</p> <p>1992-01-01</p> <p>The Advanced Expander Test <span class="hlt">Bed</span> (AETB) is a key element in NASA's Space Chemical Engine Technology Program for development and demonstration of expander cycle oxygen/hydrogen engine and advanced component technologies applicable to space engines as well as launch vehicle upper stage engines. The AETB will be used to validate the high pressure expander cycle concept, study system interactions, and conduct studies of advanced mission focused components and new health monitoring techniques in an engine system environment. The split expander cycle AETB will operate at combustion chamber pressures up to 1200 psia with propellant flow rates equivalent to 20,000 lbf vacuum thrust.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2009AGUFMEP23B0638P','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2009AGUFMEP23B0638P"><span>MICROTURBULENCE IN GRAVEL <span class="hlt">BED</span> STREAMS</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Papanicolaou, T.; Tsakiris, A. G.; Kramer, C. M.</p> <p>2009-12-01</p> <p>The overarching objective of this investigation was to evaluate the role of relative submergence on the formation and evolution of cluster microforms in gravel <span class="hlt">bed</span> streams and its implications to bedload transport. Secondary objectives of this research included (1) a detailed analysis of mean flow measurements around a clast; and (2) a selected number of experimental runs where the mean flow characteristics are linked together with the <span class="hlt">bed</span> micro-topography observations around a clast. It is hypothesized that the relative submergence is an important parameter in defining the feedback processes between the flow and clasts, which governs the flow patterns around the clasts, thus directly affecting the depositional patterns of the incoming sediments. To examine the validity of the hypothesis and meet the objectives of this research, 19 detailed experimental runs were conducted in a tilting, water recirculating laboratory flume under well-controlled conditions. A fixed array of clast-obstacles were placed atop a well-packed <span class="hlt">bed</span> with uniform size glass beads. During the runs, multifractional spherical particles were fed upstream of the clast section at a predetermined rate. State-of-the-art techniques/instruments, such as imaging analysis software, Large Scale Particle Velocimeter (LSPIV) and an Acoustic Doppler Velocimetry (ADV) were employed to provide unique quantitative measurements for bedload fluxes, clast/clusters geomorphic patterns, and mean flow characteristics in the vicinity of the clusters. Different flow patterns were recorded for the high relative submergence (HRS) and low relative submergence (LRS) experimental runs. The ADV measurements provided improved insight about the governing flow mechanisms for the HRS runs. These mechanisms were described with flow upwelling at the center of the flume and downwelling occurring along the flume walls. Flow downwelling corresponded to an increase in the free surface velocity. Additionally, the visual observations</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19880019223','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19880019223"><span>Physiology of prolonged <span class="hlt">bed</span> rest</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Greenleaf, J. E.</p> <p>1988-01-01</p> <p><span class="hlt">Bed</span> rest has been a normal procedure used by physicians for centuries in the treatment of injury and disease. Exposure of patients to prolonged <span class="hlt">bed</span> rest in the horizontal position induces adaptive deconditioning responses. While deconditioning responses are appropriate for patients or test subjects in the horizontal position, they usually result in adverse physiological responses (fainting, muscular weakness) when the patient assume the upright posture. These deconditioning responses result from reduction in hydrostatic pressure within the cardiovascular system, virtual elimination of longitudinal pressure on the long bones, some decrease in total body metabolism, changes in diet, and perhaps psychological impact from the different environment. Almost every system in the body is affected. An early stimulus is the cephalic shift of fluid from the legs which increases atrial pressure and induces compensatory responses for fluid and electrolyte redistribution. Without countermeasures, deterioration in strength and muscle function occurs within 1 wk while increased calcium loss may continue for months. Research should also focus on drug and carbohydrate metabolism.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/5347013','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/5347013"><span>Pressurized fluidized-<span class="hlt">bed</span> combustion</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Not Available</p> <p>1980-10-01</p> <p>The US DOE pressurized fluidized <span class="hlt">bed</span> combustion (PFBC) research and development program is designed to develop the technology and data base required for the successful commercialization of the PFBC concept. A cooperative program with the US, West Germany, and the UK has resulted in the construction of the 25 MWe IEA-Grimethorpe combined-cycle pilot plant in England which will be tested in 1981. A 13 MWe coal-fired gas turbine (air cycle) at Curtis-Wright has been designed and construction scheduled. Start-up is planned to begin in early 1983. A 75 MWe pilot plant is planned for completion in 1986. Each of these PFBC combined-cycle programs is discussed. The current status of PFB technology may be summarized as follows: turbine erosion tolerance/hot gas cleanup issues have emerged as the barrier technology issues; promising turbine corrosion-resistant materials have been identified, but long-term exposure data is lacking; first-generation PFB combustor technology development is maturing at the PDU level; however, scale-up to larger size has not been demonstrated; and in-<span class="hlt">bed</span> heat exchanger materials have been identified, but long-term exposure data is lacking. The DOE-PFB development plan is directed at the resolution of these key technical issues. (LCL)</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=3700489','PMC'); return false;" href="https://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=3700489"><span>Suicide following an infestation of <span class="hlt">bed</span> bugs</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pmc">PubMed Central</a></p> <p>Burrows, Stephanie; Perron, Stéphane; Susser, Stephanie</p> <p>2013-01-01</p> <p>Patient: Male, 62 Final Diagnosis: Bipolar disorder Symptoms: Bordeline personality disorder Medication: — Clinical Procedure: <span class="hlt">Bed</span> bug infestation Specialty: Psychiatry Objective: Unusual clinical course Background: In the past decade, <span class="hlt">bed</span> bug infestations have been increasingly common in high income countries. Psychological consequences of these infestations are rarely examined in the scientific literature. Case Report: We present a case, based on a coroner’s investigation report, of a woman with previous psychiatric morbidity who jumped to her death following repeated <span class="hlt">bed</span> bug infestations in her apartment. Our case report shows that the <span class="hlt">bed</span> bug infestations were the likely trigger for the onset a negative psychological state that ultimately led to suicide. Conclusions: Given the recent surge in infestations, rapid action needs to be taken not only in an attempt to control and eradicate the <span class="hlt">bed</span> bugs but also to adequately care for those infested by <span class="hlt">bed</span> bugs. PMID:23826461</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/23826461','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/23826461"><span>Suicide following an infestation of <span class="hlt">bed</span> bugs.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Burrows, Stephanie; Perron, Stéphane; Susser, Stephanie</p> <p>2013-01-01</p> <p>Male, 62. Bipolar disorder. Bordeline personality disorder. - <span class="hlt">Bed</span> bug infestation. Psychiatry. Unusual clinical course. In the past decade, <span class="hlt">bed</span> bug infestations have been increasingly common in high income countries. Psychological consequences of these infestations are rarely examined in the scientific literature. We present a case, based on a coroner's investigation report, of a woman with previous psychiatric morbidity who jumped to her death following repeated <span class="hlt">bed</span> bug infestations in her apartment. Our case report shows that the <span class="hlt">bed</span> bug infestations were the likely trigger for the onset a negative psychological state that ultimately led to suicide. Given the recent surge in infestations, rapid action needs to be taken not only in an attempt to control and eradicate the <span class="hlt">bed</span> bugs but also to adequately care for those infested by <span class="hlt">bed</span> bugs.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/25571032','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/25571032"><span>Classifying <span class="hlt">bed</span> inclination using pressure images.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Baran Pouyan, M; Ostadabbas, S; Nourani, M; Pompeo, M</p> <p>2014-01-01</p> <p>Pressure ulcer is one of the most prevalent problems for <span class="hlt">bed</span>-bound patients in hospitals and nursing homes. Pressure ulcers are painful for patients and costly for healthcare systems. Accurate in-<span class="hlt">bed</span> posture analysis can significantly help in preventing pressure ulcers. Specifically, <span class="hlt">bed</span> inclination (back angle) is a factor contributing to pressure ulcer development. In this paper, an efficient methodology is proposed to classify <span class="hlt">bed</span> inclination. Our approach uses pressure values collected from a commercial pressure mat system. Then, by applying a number of image processing and machine learning techniques, the approximate degree of <span class="hlt">bed</span> is estimated and classified. The proposed algorithm was tested on 15 subjects with various sizes and weights. The experimental results indicate that our method predicts <span class="hlt">bed</span> inclination in three classes with 80.3% average accuracy.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/27693728','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/27693728"><span>Simulation of biomass-steam gasification in fluidized <span class="hlt">bed</span> reactors: Model setup, comparisons and preliminary predictions.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Yan, Linbo; Lim, C Jim; Yue, Guangxi; He, Boshu; Grace, John R</p> <p>2016-12-01</p> <p>A user-defined solver integrating the solid-gas surface reactions and the multi-phase particle-in-cell (MP-PIC) approach is built based on the OpenFOAM software. The solver is tested against experiments. Then, biomass-steam gasification in a dual fluidized <span class="hlt">bed</span> (DFB) gasifier is preliminarily predicted. It is found that the predictions agree well with the experimental results. The <span class="hlt">bed</span> material circulation loop in the DFB can form automatically and the <span class="hlt">bed</span> height is about 1m. The voidage gradually increases along the height of the <span class="hlt">bed</span> <span class="hlt">zone</span> in the bubbling fluidized <span class="hlt">bed</span> (BFB) of the DFB. The U-bend and cyclone can separate the syngas in the BFB and the flue gas in the circulating fluidized <span class="hlt">bed</span>. The concentration of the gasification products is relatively higher in the conical transition section, and the dry and nitrogen-free syngas at the BFB outlet is predicted to be composed of 55% H2, 20% CO, 20% CO2 and 5% CH4. Copyright © 2016 Elsevier Ltd. All rights reserved.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://pubs.er.usgs.gov/publication/70015609','USGSPUBS'); return false;" href="http://pubs.er.usgs.gov/publication/70015609"><span>Volcanic ash dispersed in the Wyodak-Anderson coal <span class="hlt">bed</span>, Powder River Basin, Wyoming</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Triplehorn, D.M.; Stanton, R.W.; Ruppert, L.F.; Crowley, S.S.</p> <p>1991-01-01</p> <p>Minerals derived from air-fall volcanic ash were found in two <span class="hlt">zones</span> in the upper Paleocene Wyodak-Anderson coal <span class="hlt">bed</span> of the Fort Union Formation in the Powder River Basin of Wyoming, and are the first reported evidence of such volcanic material in this thick (> 20 m) coal <span class="hlt">bed</span>. The volcanic minerals occur in <span class="hlt">zones</span> that are not visually obvious because they contain little or no clay. These <span class="hlt">zones</span> were located by geophysical logs of the boreholes and X-ray radiography of the cores. The <span class="hlt">zones</span> correspond to two of a series of incremental core samples of the coal <span class="hlt">bed</span> that have anomalous concentrations of Zr, Ba, Nb, Sr, and P2O5. Two suites of minerals were found in both of the high-density <span class="hlt">zones</span>. A primary suite (not authigenic) consists of silt-sized quartz grains, biotite, and minor zircon. A minor suite consists of authigenic minerals, including calcite, pyrite, kaolinite, quartz, anatase, barite, and an alumino-phosphate (crandallite?). The original volcanic ash is inferred to have consisted of silica glass containing phenocrysts of quartz, biotite, zircon, and possibly, associated feldspars, pyroxenes, and amphiboles. The glass, as well as the less stable minerals, probably dissolved relatively quickly and contributed to the minor authigenic mineral suite or was removed from the peat as a result of the prevailing hydrologic conditions present in a raised peat formation. This type of volcanic ash suggests that suggests that volcanic material could have rained on the peat; this fallout may have also had a fertilizing effect on the peat by providing nutrients essential for plant growth thus contributing to the thick accumulations of the Wyodak-Anderson <span class="hlt">bed</span>. Notwithstanding, the presence of these minerals provides evidence for the contribution by volcanic sources to the mineral content of coal, but not as tonsteins. ?? 1991.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2016AGUFM.H51L..04K','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2016AGUFM.H51L..04K"><span>Surface-subsurface turbulent interaction at the interface of a permeable <span class="hlt">bed</span>: physical modeling of coarse-gravel river <span class="hlt">bed</span></span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Kim, T.; Blois, G.; Best, J.; Christensen, K. T.</p> <p>2016-12-01</p> <p>Coarse-gravel river <span class="hlt">beds</span> posses a high degree of permeability. Flow interactions between surface and subsurface flow across the <span class="hlt">bed</span> interface is key to a number of natural processes occurring in the hyporheic <span class="hlt">zone</span>. In fact, it is increasingly recognized that these interactions drive mass, momentum and energy transport across the interface, and consequently control biogeochemical processes as well as stability of sediments. Yet, the flow physics in the vicinity of a permeable interface are still poorly understood. This is in part due to a lack of quantitative direct observations near and within the wall. The latter are particularly challenging to conduct in field survey. For this reason, in this work we conduct controlled experiments on a physical model of a gravel <span class="hlt">bed</span>. We consider an idealized permeable <span class="hlt">bed</span> and use Refractive index matching (RIM) technique coupled with particle image velocimetry (PIV) to minimize the optical aberration and light reflection at the solid-liquid interface and thus to accurately quantify such flow interactions. A number of idealized acrylic wall models, based on spheres, were considered herein. Two different porous structures, were used to vary the permeability: simple cubic and body centered tetragonal arrangements. Additionally, two different topographies (smooth vs cubically arranged hemispheres) were considered for each wall structure. Measurements in the streamwise and wall-normal (x-y) plane were performed at two spanwise locations, one of which is along the top of the roughness elements and the other is along the valley side between neighboring spheres. These flow measurements, covering one wavelength of the roughness element, enable us to utilize double-averaging method to extract statistically-significant velocity profiles. In this paper, a detailed analysis of the first and second order velocity statistics associated with the different wall models will be presented.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/23261378','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/23261378"><span>Evaluation of a clay-based acidic <span class="hlt">bedding</span> conditioner for dairy cattle <span class="hlt">bedding</span>.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Proietto, R L; Hinckley, L S; Fox, L K; Andrew, S M</p> <p>2013-02-01</p> <p>This study investigated the effects of a clay-based acidic <span class="hlt">bedding</span> conditioner on sawdust <span class="hlt">bedding</span> pH, dry matter (DM), environmental pathogen counts, and environmental bacterial counts on teat ends of lactating dairy cows. Sixteen lactating Holstein cows were paired based on parity, days in milk, milk yield, and milk somatic cell count, and were negative for the presence of an intramammary pathogen. Within each pair, cows were randomly assigned to 1 of 2 treatments with 3-wk periods in a crossover design. Treatment groups consisted of 9 freestalls per group <span class="hlt">bedded</span> with either untreated sawdust or sawdust with a clay-based acidic <span class="hlt">bedding</span> conditioner, added at 3- to 4-d intervals over each 21-d period. <span class="hlt">Bedding</span> and teat ends were aseptically sampled on d 0, 1, 2, 7, 14, and 21 for determination of environmental bacterial counts. At the same time points, <span class="hlt">bedding</span> was sampled for DM and pH determination. The bacteria identified in the <span class="hlt">bedding</span> material were total gram-negative bacteria, Streptococcus spp., and coliform bacteria. The bacteria identified on the teat ends were Streptococcus spp., coliform bacteria, and Klebsiella spp. Teat end score, milk somatic cell count, and intramammary pathogen presence were measured weekly. <span class="hlt">Bedding</span> and teat cleanliness, environmental high and low temperatures, and dew point data were collected daily. The <span class="hlt">bedding</span> conditioner reduced the pH, but not the DM, of the sawdust <span class="hlt">bedding</span> compared with untreated sawdust. Overall environmental bacterial counts in <span class="hlt">bedding</span> were lower for treated sawdust. Total bacterial counts in <span class="hlt">bedding</span> and on teat ends increased with time over both periods. Compared with untreated sawdust, the treated <span class="hlt">bedding</span> had lower counts of total gram-negative bacteria and streptococci, but not coliform counts. Teat end bacterial counts were lower for cows <span class="hlt">bedded</span> on treated sawdust for streptococci, coliforms, and Klebsiella spp. compared with cows <span class="hlt">bedded</span> on untreated sawdust. The clay-based acidic <span class="hlt">bedding</span> conditioner</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/867773','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/867773"><span>Battery using a metal particle <span class="hlt">bed</span> electrode</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Evans, James V.; Savaskan, Gultekin</p> <p>1991-01-01</p> <p>A zinc-air battery in a case including a zinc particle <span class="hlt">bed</span> supported adjacent the current feeder and diaphragm on a porous support plate which holds the particles but passes electrolyte solution. Electrolyte is recycled through a conduit between the support plate and top of the <span class="hlt">bed</span> by convective forces created by a density of differential caused by a higher concentration of high density discharge products in the interstices of the <span class="hlt">bed</span> than in the electrolyte recycle conduit.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/7279713','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/7279713"><span>Battery using a metal particle <span class="hlt">bed</span> electrode</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Evans, J.V.; Savaskan, G.</p> <p>1991-04-09</p> <p>A zinc-air battery in a case is described including a zinc particle <span class="hlt">bed</span> supported adjacent the current feeder and diaphragm on a porous support plate which holds the particles but passes electrolyte solution. Electrolyte is recycled through a conduit between the support plate and top of the <span class="hlt">bed</span> by convective forces created by a density of differential caused by a higher concentration of high density discharge products in the interstices of the <span class="hlt">bed</span> than in the electrolyte recycle conduit. 7 figures.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/863559','DOE-PATENT-XML'); return false;" href="http://www.osti.gov/scitech/servlets/purl/863559"><span>Gas distributor for fluidized <span class="hlt">bed</span> coal gasifier</span></a></p> <p><a target="_blank" href="http://www.osti.gov/doepatents">DOEpatents</a></p> <p>Worley, Arthur C.; Zboray, James A.</p> <p>1980-01-01</p> <p>A gas distributor for distributing high temperature reaction gases to a fluidized <span class="hlt">bed</span> of coal particles in a coal gasification process. The distributor includes a pipe with a refractory reinforced lining and a plurality of openings in the lining through which gas is fed into the <span class="hlt">bed</span>. These feed openings have an expanding tapered shape in the downstream or exhaust direction which aids in reducing the velocity of the gas jets as they enter the <span class="hlt">bed</span>.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://pubs.er.usgs.gov/publication/70020833','USGSPUBS'); return false;" href="http://pubs.er.usgs.gov/publication/70020833"><span>Fuel <span class="hlt">bed</span> characteristics of Sierra Nevada conifers</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>van Wagtendonk, J.W.; Benedict, J.M.; Sydoriak, W.M.</p> <p>1998-01-01</p> <p>A study of fuels in Sierra Nevada conifer forests showed that fuel <span class="hlt">bed</span> depth and fuel <span class="hlt">bed</span> weight significantly varied by tree species and developmental stage of the overstory. Specific values for depth and weight of woody, litter, and duff fuels are reported. There was a significant positive relationship between fuel <span class="hlt">bed</span> depth and weight. Estimates of woody fuel weight using the planar intercept method were significantly related to sampled values. These relationships can be used to estimate fuel weights in the field.</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_13");'>13</a></li> <li><a href="#" onclick='return showDiv("page_14");'>14</a></li> <li class="active"><span>15</span></li> <li><a href="#" onclick='return showDiv("page_16");'>16</a></li> <li><a href="#" onclick='return showDiv("page_17");'>17</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_15 --> <div id="page_16" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_14");'>14</a></li> <li><a href="#" onclick='return showDiv("page_15");'>15</a></li> <li class="active"><span>16</span></li> <li><a href="#" onclick='return showDiv("page_17");'>17</a></li> <li><a href="#" onclick='return showDiv("page_18");'>18</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="301"> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/1981aes.....2..903K','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/1981aes.....2..903K"><span>Solar energy assisted fluidized <span class="hlt">bed</span> fruit drying</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Kilkis, B.</p> <p></p> <p>The possibility of using the fluidized-<span class="hlt">bed</span> principle for solar drying of fruits economically and simply is explored. With the aid of computerized design methods, an optimized fluidized <span class="hlt">bed</span>/packed <span class="hlt">bed</span> combination was achieved, that in addition functions as a solar air heater. Based on this configuration, a novel aparatus was designed in Turkey for drying Turkish grapes. Comparisons with comparable systems are made.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.dtic.mil/docs/citations/ADA175762','DTIC-ST'); return false;" href="http://www.dtic.mil/docs/citations/ADA175762"><span>Fluidized <span class="hlt">Bed</span> Boiler Assessment for Navy Applications</span></a></p> <p><a target="_blank" href="http://www.dtic.mil/">DTIC Science & Technology</a></p> <p></p> <p>1986-11-01</p> <p>inertia and latent heat stored in the <span class="hlt">bed</span> material allow newly added fuel to ignite quickly and evenly; even wet or low-quality fuels can be burned...about 97% inert <span class="hlt">bed</span> material (e.g., sand) and 3% fuel. The upper <span class="hlt">bed</span> is composed of finely ground sulfur sorbent and is where desulfurization of...can be burned without the need of the expensive back-end desulfurization equipment. In fact, most FBC boilers can practically burn all combustible</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/1036788','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/1036788"><span>[Development of a "vortex <span class="hlt">bed</span>" drying apparatus].</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Bibileishvili, V I; Setti, D; Peri, C</p> <p>1976-01-01</p> <p>Fundamental parameters in dimensioning a "vortex <span class="hlt">bed</span>" drying apparatus are the pressure drop across the <span class="hlt">bed</span> and the higher and lower limit of fluidization velocity. The analysis of the Navier-Stokes equations brings to the following functional relations between dimensionless groups: (see journal). These relations define the fluidization conditions in a "vortex <span class="hlt">bed</span>" apparatus. Experimental tests carried out on a laboratory scale apparatus will provide us with the unknown constants for industrial scale extrapolation.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/1231134','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/1231134"><span>Updraft Fixed <span class="hlt">Bed</span> Gasification Aspen Plus Model</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p></p> <p>2007-09-27</p> <p>The updraft fixed <span class="hlt">bed</span> gasification model provides predictive modeling capabilities for updraft fixed <span class="hlt">bed</span> gasifiers, when devolatilization data is available. The fixed <span class="hlt">bed</span> model is constructed using Aspen Plus, process modeling software, coupled with a FORTRAN user kinetic subroutine. Current updraft gasification models created in Aspen Plus have limited predictive capabilities and must be "tuned" to reflect a generalized gas composition as specified in literature or by the gasifier manufacturer. This limits the applicability of the process model.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/864989','DOE-PATENT-XML'); return false;" href="http://www.osti.gov/scitech/servlets/purl/864989"><span>Combined fluidized <span class="hlt">bed</span> retort and combustor</span></a></p> <p><a target="_blank" href="http://www.osti.gov/doepatents">DOEpatents</a></p> <p>Shang, Jer-Yu; Notestein, John E.; Mei, Joseph S.; Zeng, Li-Wen</p> <p>1984-01-01</p> <p>The present invention is directed to a combined fluidized <span class="hlt">bed</span> retorting and combustion system particularly useful for extracting energy values from oil shale. The oil-shale retort and combustor are disposed side-by-side and in registry with one another through passageways in a partition therebetween. The passageways in the partition are submerged below the top of the respective fluid <span class="hlt">beds</span> to preclude admixing or the product gases from the two chambers. The solid oil shale or <span class="hlt">bed</span> material is transported through the chambers by inclining or slanting the fluidizing medium distributor so that the solid <span class="hlt">bed</span> material, when fluidized, moves in the direction of the downward slope of the distributor.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/864866','DOE-PATENT-XML'); return false;" href="http://www.osti.gov/scitech/servlets/purl/864866"><span>Packed fluidized <span class="hlt">bed</span> blanket for fusion reactor</span></a></p> <p><a target="_blank" href="http://www.osti.gov/doepatents">DOEpatents</a></p> <p>Chi, John W. H.</p> <p>1984-01-01</p> <p>A packed fluidized <span class="hlt">bed</span> blanket for a fusion reactor providing for efficient radiation absorption for energy recovery, efficient neutron absorption for nuclear transformations, ease of blanket removal, processing and replacement, and on-line fueling/refueling. The blanket of the reactor contains a <span class="hlt">bed</span> of stationary particles during reactor operation, cooled by a radial flow of coolant. During fueling/refueling, an axial flow is introduced into the <span class="hlt">bed</span> in stages at various axial locations to fluidize the <span class="hlt">bed</span>. When desired, the fluidization flow can be used to remove particles from the blanket.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://ntrs.nasa.gov/search.jsp?R=19930057349&hterms=ECLSS&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D40%26Ntt%3DECLSS','NASA-TRS'); return false;" href="https://ntrs.nasa.gov/search.jsp?R=19930057349&hterms=ECLSS&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D40%26Ntt%3DECLSS"><span>Conceptual design of ECLSS microgravity test <span class="hlt">beds</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Kolodney, Matt; Dall-Bauman, Liese</p> <p>1992-01-01</p> <p>Conceptual designs were prepared for Space Station Freedom ECLSS test <span class="hlt">beds</span> for both the Air Revitalization Subsystem (ARS) and the Water Recovery and Management Subsystem (WRMS), which will allow extended testing of equipment under microgravity conditions. The separate designs for the ARS and the WRMS include storage tanks, plumbing, and limited instrumentation that would be expected to be common to all air or water treatment equipment of interest. The <span class="hlt">beds</span> are designed to recycle process fluids to the greatest extent possible, thus minimizing the spacecraft/test <span class="hlt">bed</span> interface requirements. Schematic diagrams of both the ARS and the WRMS test <span class="hlt">beds</span> are included.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/6867057','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/6867057"><span>Correlating throughput and backmixing in fluidized <span class="hlt">beds</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Papa, G. ); Zenz, F.A. )</p> <p>1995-01-01</p> <p>The homogeneity of a fluidized <span class="hlt">bed</span>, usually regarded kinetically as a stirred tank reactor, can be altered to approach plug flow by properly designed internals that limit dense-phase mixing action. These internals can achieve desired temperature or concentration gradients along the <span class="hlt">bed</span> height. A new correlation has been developed that models throughput and backmixing for gas-liquid and gas-solid systems. Maximum performance is in the neighborhood of 75% to 80% of the ultimate throughput capacity. The paper discusses backmixing mechanisms in fluidized <span class="hlt">beds</span>; approaches to plug flow in fluidized <span class="hlt">beds</span>; limiting capacities of structured internals; and the optimum design for structured grid internals.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19750015819','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19750015819"><span>Fluidized <span class="hlt">bed</span> regenerators for Brayton cycles</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Nichols, L. D.</p> <p>1975-01-01</p> <p>A recuperator consisting of two fluidized <span class="hlt">bed</span> regenerators with circulating solid particles is considered for use in a Brayton cycle. These fluidized <span class="hlt">beds</span> offer the possibility of high temperature operation if ceramic particles are used. Calculations of the efficiency and size of fluidized <span class="hlt">bed</span> regenerators for typical values of operating parameters were made and compared to a shell and tube recuperator. The calculations indicate that the fluidized <span class="hlt">beds</span> will be more compact than the shell and tube as well as offering a high temperature operating capability.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/24007684','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/24007684"><span>Backfill-simulated moving <span class="hlt">bed</span> operation for improving the separation performance of simulated moving <span class="hlt">bed</span> chromatography.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Kim, Kyung-Min; Lee, Chang-Ha</p> <p>2013-10-11</p> <p>The Backfill-SMB (BF-SMB) strategy was designed to improve the separation performance of simulated moving <span class="hlt">bed</span> (SMB) chromatography. In the BF-SMB operation, a limited amount of products from raffinate and/or extract was re-fed to the SMB circuit as a backfill-feed. Two additional operating variables, backfill ratio (BR) and backfill length (BL), were suggested to determine the amount and injection length of backfill-feed. This strategy was applied to a four-<span class="hlt">zone</span> SMB with one column (1-1-1-1) and two columns (2-2-2-2) per <span class="hlt">zone</span> using a binary mixture with a nonlinear isotherm. Various BF-SMB operational methods were designed to supply backfill-feed to the feed node and/or intermediate node. The separation performances of conventional SMB and BF-SMB were compared in terms of purity, recovery, and eluent consumption. The BF-SMB successfully improved the separation performance of the conventional SMB because backfill-feed led to the rich condition of the main component at each product withdrawal node. Due to the 'TMB effect' caused by backfill-feed, the BF-SMB operation was more efficient in the 1-1-1-1 configuration than in the 2-2-2-2 configuration, showing maximum improvement of 5-7% purity and recovery from the performance of conventional SMB. In addition, partial recycling of eluent by backfill-feed resulted in a decrease in eluent consumption up to 10% even with improved purity and recovery in BF-SMB.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2014AGUFMEP43C3590F','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2014AGUFMEP43C3590F"><span>Different <span class="hlt">bed</span> surface and flow resistance characteristics for gravel and sand <span class="hlt">bed</span></span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Fan, N.; Yang, K.; Nie, R.; Liu, X.</p> <p>2014-12-01</p> <p><span class="hlt">Bed</span> forms affect both <span class="hlt">bed</span> load transport and flow resistance strongly and change their shapes and sizes depending on underlying grain size distribution and shear stress. A series of flume experiments were conducted at the Saint Anthony Falls Laboratory to study the effect of <span class="hlt">bed</span> form dynamics on flow turbulence and sediment transport with both gravel and sand as <span class="hlt">bed</span> material and different flow conditions. From the experimental data, the spectrum of <span class="hlt">bed</span> elevation time series, the PDFs of <span class="hlt">bed</span> elevation increments and the flow resistance characteristics are all analyzed. The wavelet-based spectral analysis shows that the slopes of the elevation spectrums are -2 and -3 for gravel and sand <span class="hlt">bed</span> surfaces, respectively. The slope -3 indicates that the surface is self-similar, in another words, the ratios of <span class="hlt">bed</span> form heights and lengths for different <span class="hlt">bed</span> forms are the same; however, the slope of -2 indicates that the surface is self-affine, and in such case (-2) the ratios of <span class="hlt">bed</span> form heights and lengths for different <span class="hlt">bed</span> forms are not correlated at all. We interpret that the relative size of grain and boundary layer affects the <span class="hlt">bed</span> form characteristics significantly, e.g., grain size of sand is of the same scale as the thickness of boundary layer, but both are much smaller than the grain size of gravel. Our results suggest that the PDFs of <span class="hlt">bed</span> elevation increments for both gravel and sand <span class="hlt">beds</span> can be fitted well with two-sided asymmetric exponential function. Furthermore, we show that the flow resistance (Darcy-Weisbach coefficients f) are much higher for sand <span class="hlt">bed</span> than gravel <span class="hlt">bed</span>, and the former is contributed by form drags, which is much larger than grain drags. For gravel <span class="hlt">bed</span>, f and the skewness of <span class="hlt">bed</span> elevation increments increases with flow discharge whereas for the sand <span class="hlt">bed</span>, both f and the skewness of <span class="hlt">bed</span> elevation increments decreases which corresponds to the transition in hydraulic conditions for dune to dynamic flat surface in our experiments. The analysis</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/961832','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/961832"><span>CERTS Microgrid Laboratory Test <span class="hlt">Bed</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Eto, Joe; Lasseter, Robert; Schenkman, Ben; Stevens, John; Klapp, Dave; Volkommer, Harry; Linton, Ed; Hurtado, Hector; Roy, Jean</p> <p>2009-06-18</p> <p>The objective of the CERTS Microgrid Test <span class="hlt">Bed</span> project was to enhance the ease of integrating energy sources into a microgrid. The project accomplished this objective by developing and demonstrating three advanced techniques, collectively referred to as the CERTS Microgrid concept, that significantly reduce the level of custom field engineering needed to operate microgrids consisting of generating sources less than 100kW. The techniques comprising the CERTS Microgrid concept are: 1) a method for effecting automatic and seamless transitions between grid-connected and islanded modes of operation, islanding the microgrid's load from a disturbance, thereby maintaining a higher level of service, without impacting the integrity of the utility's electrical power grid; 2) an approach to electrical protection within a limited source microgrid that does not depend on high fault currents; and 3) a method for microgrid control that achieves voltage and frequency stability under islanded conditions without requiring high-speed communications between sources. These techniques were demonstrated at a full-scale test <span class="hlt">bed</span> built near Columbus, Ohio and operated by American Electric Power. The testing fully confirmed earlier research that had been conducted initially through analytical simulations, then through laboratory emulations,and finally through factory acceptance testing of individual microgrid components. The islanding and resychronization method met all Institute of Electrical and Electronics Engineers Standard 1547 and power quality requirements. The electrical protection system was able to distinguish between normal and faulted operation. The controls were found to be robust under all conditions, including difficult motor starts and high impedance faults. The results from these tests are expected to lead to additional testing of enhancements to the basic techniques at the test <span class="hlt">bed</span> to improve the business case for microgrid technologies, as well to field demonstrations</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2012Geomo.141....1S','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2012Geomo.141....1S"><span><span class="hlt">Bed</span> aggradation in the lower reach of the Jia Dhansiri River, India</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Sarmah, Rana</p> <p>2012-03-01</p> <p>This study aims at estimating the rate of <span class="hlt">bed</span> aggradation of the Jia Dhansiri River in Assam, India. It is carried out using two methods: (1) measurement of channel cross section in the field, and (2) measurement of variously dated maps for the period 1995-2006. Following these two methods, data on parameters pertaining to <span class="hlt">bed</span> aggradation are generated and authenticated by comparison. Data on total <span class="hlt">bed</span> aggradation during 1995-2006 are extrapolated from cross section graphs and again verified with a model proposed in this paper based on average water level of base year and current year and total <span class="hlt">bed</span> aggradation. The rates of <span class="hlt">bed</span> aggradations are 5.27 cm/y at Dhansiri Khuti village, 5.09 cm/y at Barigain village, 5.27 cm/y at Bagishakash village, and 2.64 cm/y at Thalthali village. No degradation <span class="hlt">zones</span> are found in between during the study period except in minor magnitude and localized cases. If these rates of <span class="hlt">bed</span> aggradation are continued and no significant changes in the channel morphology occur, then the river <span class="hlt">bed</span> may merge with the low river bank after 11 years at Dhansiri Khuti village, 17 years at Barigaon village, 6 years at Bagishakash village, and 7 years at Thalthali village. The average channel aggradation during 11-years of period in the 16-km reach has estimated to be 3.65 cm/y. Again, if this rate is continued then the river <span class="hlt">bed</span> will overtop low banks of the 16-km reach after 16 years. At this situation the river may attain a state of geomorphic threshold which may be channel shift following vulnerable slope(s).</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/7170260','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/7170260"><span>Flue gas desulfurization by rotating <span class="hlt">beds</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Gardner, N.; Keyvani, M.; Coskundeniz, A.</p> <p>1992-01-01</p> <p>The operating and mass transfer characteristics of rotating foam metal <span class="hlt">beds</span> were studied to determine the potential for flue gas desulfurization. This is a final technical report on the work supported by DOE [number sign]FG22-87-PC79924. The report is divided into two sections, Part 1 deals primarily with the operating characteristics of rotating <span class="hlt">beds</span>, and Part 2 covers the mass transfer characteristics of S0[sub 2] absorption in water-lime slurries. Rotating foam metal <span class="hlt">beds</span> are in essence packed towers operated in high gravitational fields. The foam metal <span class="hlt">bed</span> is in the form of a cylindrical donut, or torus, and is rotated to produced the high centrifugal forces. The liquid phase enters the <span class="hlt">bed</span> at the inner surface of the torus and is pulled by the field through the <span class="hlt">bed</span>. Gas flows countercurrent to the liquid. The <span class="hlt">bed</span> packing can have a very large specific surface areas and not flood. Possible benefits include much smaller height of a transfer unit resulting in smaller equipment and supporting structures, reduced solvent inventory, faster response with improved process control, reduced pressure drop, and shorter startup and shut-down times. This work is concerned broadly with the operating characteristics of rotating <span class="hlt">beds</span>, the objectives being to (1) determine the pressure drop through the rotating <span class="hlt">bed</span>; (2) determine the power required to operate the <span class="hlt">beds</span>, (3) investigate the residence time distribution of the liquid phase in the <span class="hlt">beds</span>; and (4) determine the mass transfer coefficients of S0[sub 2] absorption. Three packings of differing specific surface areas were studied, with areas ranging from 656 to 2952 m[sub 2]/m[sub 3]. Liquid flow rates to 36 kg/s*m[sub 2], gas flow rate to 2.2 kg/s*m[sub 2], and gravitational fields to 300 g were covered in this study.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=4553422','PMC'); return false;" href="https://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=4553422"><span>Metabolic Resistance in <span class="hlt">Bed</span> Bugs</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pmc">PubMed Central</a></p> <p>Mamidala, Praveen; Jones, Susan C.; Mittapalli, Omprakash</p> <p>2011-01-01</p> <p>Blood-feeding insects have evolved resistance to various insecticides (organochlorines, pyrethroids, carbamates, etc.) through gene mutations and increased metabolism. <span class="hlt">Bed</span> bugs (Cimex lectularius) are hematophagous ectoparasites that are poised to become one of the major pests in households throughout the United States. Currently, C. lectularius has attained a high global impact status due to its sudden and rampant resurgence. Resistance to pesticides is one factor implicated in this phenomenon. Although much emphasis has been placed on target sensitivity, little to no knowledge is available on the role of key metabolic players (e.g., cytochrome P450s and glutathione S-transferases) towards pesticide resistance in C. lectularius. In this review, we discuss different modes of resistance (target sensitivity, penetration resistance, behavioral resistance, and metabolic resistance) with more emphasis on metabolic resistance. PMID:26467498</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/1130524','DOE-PATENT-XML'); return false;" href="http://www.osti.gov/scitech/servlets/purl/1130524"><span>Fluidized <span class="hlt">bed</span> heat treating system</span></a></p> <p><a target="_blank" href="http://www.osti.gov/doepatents">DOEpatents</a></p> <p>Ripley, Edward B; Pfennigwerth, Glenn L</p> <p>2014-05-06</p> <p>Systems for heat treating materials are presented. The systems typically involve a fluidized <span class="hlt">bed</span> that contains granulated heat treating material. In some embodiments a fluid, such as an inert gas, is flowed through the granulated heat treating medium, which homogenizes the temperature of the heat treating medium. In some embodiments the fluid may be heated in a heating vessel and flowed into the process chamber where the fluid is then flowed through the granulated heat treating medium. In some embodiments the heat treating material may be liquid or granulated heat treating material and the heat treating material may be circulated through a heating vessel into a process chamber where the heat treating material contacts the material to be heat treated. Microwave energy may be used to provide the source of heat for heat treating systems.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/26467498','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/26467498"><span>Metabolic Resistance in <span class="hlt">Bed</span> Bugs.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Mamidala, Praveen; Jones, Susan C; Mittapalli, Omprakash</p> <p>2011-03-18</p> <p>Blood-feeding insects have evolved resistance to various insecticides (organochlorines, pyrethroids, carbamates, etc.) through gene mutations and increased metabolism. <span class="hlt">Bed</span> bugs (Cimex lectularius) are hematophagous ectoparasites that are poised to become one of the major pests in households throughout the United States. Currently, C. lectularius has attained a high global impact status due to its sudden and rampant resurgence. Resistance to pesticides is one factor implicated in this phenomenon. Although much emphasis has been placed on target sensitivity, little to no knowledge is available on the role of key metabolic players (e.g., cytochrome P450s and glutathione S-transferases) towards pesticide resistance in C. lectularius. In this review, we discuss different modes of resistance (target sensitivity, penetration resistance, behavioral resistance, and metabolic resistance) with more emphasis on metabolic resistance.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/983806','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/983806"><span>CERTS Microgrid Laboratory Test <span class="hlt">Bed</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>ETO, J.; LASSETER, R.; SCHENKMAN, B.; STEVENS, J.; KLAPP, D.; VOLKOMMER, H.; LINTON, E.; HURTADO, H.; ROY, J.</p> <p>2010-06-08</p> <p>The objective of the CERTS Microgrid Test <span class="hlt">Bed</span> project was to enhance the ease of integrating energy sources into a microgrid. The project accomplished this objective by developing and demonstrating three advanced techniques, collectively referred to as the CERTS Microgrid concept, that significantly reduce the level of custom field engineering needed to operate microgrids consisting of generating sources less than 100kW. The techniques comprising the CERTS Microgrid concept are: 1 a method for effecting automatic and seamless transitions between grid-connected and islanded modes of operation, islanding the microgrid's load from a disturbance, thereby maintaining a higher level of service, without impacting the integrity of the utility's electrical power grid; 2 an approach to electrical protection within a limited source microgrid that does not depend on high fault currents; and 3 a method for microgrid control that achieves voltage and frequency stability under islanded conditions without requiring high-speed communications between sources.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19930010802','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19930010802"><span>Advanced expander test <span class="hlt">bed</span> program</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Riccardi, D. P.; Mitchell, J. C.</p> <p>1993-01-01</p> <p>The Advanced Expander Test <span class="hlt">Bed</span> (AETB) is a key element in NASA's Space Chemical Engine Technology Program for development and demonstration of expander cycle oxygen/hydrogen engine and advanced component technologies applicable to space engines as well as launch vehicle upper stage engines. The AETB will be used to validate the high-pressure expander cycle concept, investigate system interactions, and conduct investigations of advanced mission focused components and new health monitoring techniques in an engine system environment. The split expander cycle AETB will operate at combustion chamber pressures up to 1200 psia with propellant flow rates equivalent to 20,000 lbf vacuum thrust. Contract work began 27 Apr. 1990. During 1992, a major milestone was achieved with the review of the final design of the oxidizer turbopump in Sep. 1992.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/20040121116','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/20040121116"><span>The Virtual Test <span class="hlt">Bed</span> Project</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Rabelo, Luis</p> <p>2003-01-01</p> <p>This is a report of my activities as a NASA Fellow during the summer of 2003 at the NASA Kennedy Space Center (KSC). The core of these activities is the assigned project: the Virtual Test <span class="hlt">Bed</span> (VTB) from the Spaceport Engineering and Technology Directorate. The VTB Project has its foundations in the NASA Ames Research Center (ARC) Intelligent Launch & Range Operations program (ILRO). The objective of the VTB project is to develop a unique collaborative computing environment where simulation models can be hosted and integrated in a seamless fashion. This collaborative computing environment will have as emphasis operational models. This report will focus on the decisions about the different simulation modeling environments considered, simulation platform development, technology and operational models assessment, and computing infrastructure implementation.</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_14");'>14</a></li> <li><a href="#" onclick='return showDiv("page_15");'>15</a></li> <li class="active"><span>16</span></li> <li><a href="#" onclick='return showDiv("page_17");'>17</a></li> <li><a href="#" onclick='return showDiv("page_18");'>18</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_16 --> <div id="page_17" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_15");'>15</a></li> <li><a href="#" onclick='return showDiv("page_16");'>16</a></li> <li class="active"><span>17</span></li> <li><a href="#" onclick='return showDiv("page_18");'>18</a></li> <li><a href="#" onclick='return showDiv("page_19");'>19</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="321"> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/1231110','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/1231110"><span>Building Controls Virtual Test <span class="hlt">Bed</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Wetter, Michael; Haves, Philip; Coffey, Brian</p> <p>2008-04-01</p> <p>The Building Controls Virtual Test <span class="hlt">Bed</span> (BCVTB) is a modular software environment that is based on the Ptolemy II software environment. The BCVTB can be used for design and analysis of heterogenous systems, such as building energy and controls systems. Our additions to Ptolemy II allow users to Couple to Ptolemy II simulation software such as EnergyPlus, MATLAB/Simulink or Dymola for data exchange during run-time. Future versions of the BCVTS will also contain an interface to BACnet which is a communication protocol for building Control systems, and interfaces to digital/analog converters that allow communication with controls hardware. Through Ptolemy II, the BCVTB provides a graphical model building environment, synchronizes the exchanged data and visualizes the system evolution during run- time.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/1231110','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/1231110"><span>Building Controls Virtual Test <span class="hlt">Bed</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Wetter, Michael; Haves, Philip; Coffey, Brian</p> <p>2008-04-01</p> <p>The Building Controls Virtual Test <span class="hlt">Bed</span> (BCVTB) is a modular software environment that is based on the Ptolemy II software environment. The BCVTB can be used for design and analysis of heterogenous systems, such as building energy and controls systems. Our additions to Ptolemy II allow users to Couple to Ptolemy II simulation software such as EnergyPlus, MATLAB/Simulink or Dymola for data exchange during run-time. Future versions of the BCVTS will also contain an interface to BACnet which is a communication protocol for building Control systems, and interfaces to digital/analog converters that allow communication with controls hardware. Through Ptolemy II, the BCVTB provides a graphical model building environment, synchronizes the exchanged data and visualizes the system evolution during run- time.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.ars.usda.gov/research/publications/publication/?seqNo115=275205','TEKTRAN'); return false;" href="http://www.ars.usda.gov/research/publications/publication/?seqNo115=275205"><span>Effect of <span class="hlt">bedding</span> material on air quality of <span class="hlt">bedded</span> manure packs in livestock facilities</span></a></p> <p><a target="_blank" href="https://www.ars.usda.gov/research/publications/find-a-publication/">USDA-ARS?s Scientific Manuscript database</a></p> <p></p> <p></p> <p>Materials such as corn stover and wood chips are often used for <span class="hlt">bedding</span> in livestock facilities. <span class="hlt">Bedding</span> materials may affect air quality emissions from livestock facilities. The objective of this study was to determine how different <span class="hlt">bedding</span> materials affect air quality. Beef manure from cattle fe...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.fs.usda.gov/treesearch/pubs/32965','TREESEARCH'); return false;" href="https://www.fs.usda.gov/treesearch/pubs/32965"><span>Manual for computing <span class="hlt">bed</span> load transport using BAGS (Bedload Assessment for Gravel-<span class="hlt">bed</span> Streams) Software</span></a></p> <p><a target="_blank" href="http://www.fs.usda.gov/treesearch/">Treesearch</a></p> <p>John Pitlick; Yantao Cui; Peter Wilcock</p> <p>2009-01-01</p> <p>This manual provides background information and instructions on the use of a spreadsheet-based program for Bedload Assessment in Gravel-<span class="hlt">bed</span> Streams (BAGS). The program implements six <span class="hlt">bed</span> load transport equations developed specifically for gravel-<span class="hlt">bed</span> rivers. Transport capacities are calculated on the basis of field measurements of channel geometry, reach-average slope,...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/10159073','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/10159073"><span><span class="hlt">Bed</span> material agglomeration during fluidized <span class="hlt">bed</span> combustion. Technical progress report, January 1, 1994--March 31, 1994</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Brown, R.C.; Dawson, M.R.; Smeenk, J.L.</p> <p>1994-04-01</p> <p>Laboratory combustion tests conducted this quarter support the hypothesis that localized reducing conditions promote formation of agglomerates in the <span class="hlt">bed</span> of fluidized <span class="hlt">bed</span> boilers. These tests were designed to simulate localized reducing conditions found in commercial fluidized <span class="hlt">bed</span> combustors. Localized reducing conditions may occur from either poor lateral <span class="hlt">bed</span> mixing or oxygen-starved <span class="hlt">bed</span> conditions due to the coal feed configuration. It was found-that agglomeration can occur at lower theoretical air values while operating temperatures are within the range of fluidized <span class="hlt">bed</span> boilers. Cohesion of <span class="hlt">bed</span> particles appears to take place very rapidly when theoretical air in the <span class="hlt">bed</span> approaches 70%. These tests also indicate that <span class="hlt">bed</span> temperature, pressure drop, oxygen and carbon dioxide concentrations are affected by agglomeration. Agglomeration appears to result in: (1) An increase in the frequency of pressure fluctuations (<span class="hlt">bed</span> pressure drop). (2) An increase in the magnitude of pressure fluctuations (<span class="hlt">bed</span> pressure drop.) (3) A possible decrease in <span class="hlt">bed</span> pressure differential over time. In addition, there appears to be an increase in the amount of available oxygen and a decrease in CO{sub 2}. Agglomerates formed in the laboratory are being subjected to mineralogical analyses which will then be compared to similar analyses of agglomerates removed from commercial boilers.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/7151951','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/7151951"><span>Pulsed atmospheric fluidized <span class="hlt">bed</span> combustion</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Not Available</p> <p>1989-11-01</p> <p>In order to verify the technical feasibility of the MTCI Pulsed Atmospheric Fluidized <span class="hlt">Bed</span> Combustor technology, a laboratory-scale system was designed, built and tested. Important aspects of the operational and performance parameters of the system were established experimentally. A considerable amount of the effort was invested in the initial task of constructing an AFBC that would represent a reasonable baseline against which the performance of the PAFBC could be compared. A summary comparison of the performance and emissions data from the MTCI 2 ft {times} 2 ft facility (AFBC and PAFBC modes) with those from conventional BFBC (taller freeboard and recycle operation) and circulating fluidized <span class="hlt">bed</span> combustion (CFBC) units is given in Table ES-1. The comparison is for typical high-volatile bituminous coals and sorbents of average reactivity. The values indicated for BFBC and CFBC were based on published information. The AFBC unit that was designed to act as a baseline for the comparison was indeed representative of the larger units even at the smaller scale for which it was designed. The PAFBC mode exhibited superior performance in relation to the AFBC mode. The higher combustion efficiency translates into reduced coal consumption and lower system operating cost; the improvement in sulfur capture implies less sorbent requirement and waste generation and in turn lower operating cost; lower NO{sub x} and CO emissions mean ease of site permitting; and greater steam-generation rate translates into less heat exchange surface area and reduced capital cost. Also, the PAFBC performance generally surpasses those of conventional BFBC, is comparable to CFBC in combustion and NO{sub x} emissions, and is better than CFBC in sulfur capture and CO emissions even at the scaled-down size used for the experimental feasibility tests.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2002HMR....56...37B','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2002HMR....56...37B"><span>Predation on barnacles of intertidal and subtidal mussel <span class="hlt">beds</span> in the Wadden Sea</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Buschbaum, Christian</p> <p>2002-04-01</p> <p>Balanids are the numerically dominant epibionts on mussel <span class="hlt">beds</span> in the Wadden Sea. Near the island of Sylt (German Bight, North Sea), Semibalanus balanoides dominated intertidally and Balanus crenatus subtidally. Field experiments were conducted to test the effects of predation on the density of barnacle recruits. Subtidally, predator exclusion resulted in significantly increased abundances of B. crenatus, while predator exclusion had no significant effects on the density of S. balanoides intertidally. It is suggested that recruitment of B. crenatus to subtidal mussel <span class="hlt">beds</span> is strongly affected by adult shore crabs ( Carcinus maenas) and juvenile starfish ( Asterias rubens), whereas recruits of S. balanoides in the intertidal <span class="hlt">zone</span> are mainly influenced by grazing and bulldozing of the very abundant periwinkle Littorina littorea, which is rare subtidally. Thus, not only do the barnacle species differ between intertidal and subtidal mussel <span class="hlt">beds</span>, but the biotic control factors do so as well.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/1999HyPr...13..439A','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/1999HyPr...13..439A"><span>Water temperatures within spawning <span class="hlt">beds</span> in two chalk streams and implications for salmonid egg development</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Acornley, R. M.</p> <p>1999-02-01</p> <p>Water temperatures within brown trout (Salmo trutta L.) spawning gravels were measured in two Hampshire chalk streams from October 1995 to April 1996 inclusive. During the winter, mean intra-gravel water temperatures were higher than those in the stream, and increased with depth in the gravel <span class="hlt">bed</span>. The amplitude of diel fluctuations in water temperature decreased with depth in the gravel <span class="hlt">bed</span>, although diel fluctuations were still evident at a depth of 30 cm. Differences in intra-gravel temperature gradients between the two study sites were attributed to differences in the amplitude of stream water temperature fluctuations and there was no evidence that either of the study sites were located in <span class="hlt">zones</span> of upwelling groundwater. Published equations are used to predict, from temperature, the timing of important stages in the development of brown trout embryos (eyeing, hatching and emergence) for eggs spawned in the autumn and winter and buried at different depths in the gravel <span class="hlt">bed</span>.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.dtic.mil/docs/citations/ADA345624','DTIC-ST'); return false;" href="http://www.dtic.mil/docs/citations/ADA345624"><span>New Madrid Seismic <span class="hlt">Zone</span></span></a></p> <p><a target="_blank" href="http://www.dtic.mil/">DTIC Science & Technology</a></p> <p></p> <p>2007-11-02</p> <p>NEW MADRID SEISMIC <span class="hlt">ZONE</span> BY COLONEL J.DAVID NORWOOD United States Army DISTRIBUTION STATEMENT A...mCTBB l USAWC STRATEGY RESEARCH PROJECT New Madrid Seismic <span class="hlt">Zone</span> by J. David Norwood, COL, USA Michael A. Pearson, COL, USA Project Advisor The...ABSTRACT AUTHOR: J. David Norwood, Colonel, U.S. Army TITLE: New Madrid Seismic <span class="hlt">Zone</span> FORMAT: Strategy Research Project DATE: 22 April 1998 . PAGES:</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.epa.gov/bedbugs/print-bed-bug-card-single-cards','PESTICIDES'); return false;" href="https://www.epa.gov/bedbugs/print-bed-bug-card-single-cards"><span>Print a <span class="hlt">Bed</span> Bug Card - (Single Cards)</span></a></p> <p><a target="_blank" href="http://www.epa.gov/pesticides/search.htm">EPA Pesticide Factsheets</a></p> <p></p> <p></p> <p>Two sets of business-card-sized lists of tips for recognizing <span class="hlt">bed</span> bugs and the signs of an infestation, including a photo of <span class="hlt">bed</span> bugs to assist identification. One card is for general use around home or office, the other for travelers.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/20100004771','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/20100004771"><span>International Standardization of <span class="hlt">Bed</span> Rest Standard Measures</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Cromwell, Ronita L.</p> <p>2010-01-01</p> <p>This slide presentation gives an overview of the standardization of <span class="hlt">bed</span> rest measures. The International Countermeasures Working Group attempted to define and agree internationally on standard measurements for spaceflight based <span class="hlt">bed</span> rest studies. The group identified the experts amongst several stakeholder agencys. It included information on exercise, muscle, neurological, psychological, bone and cardiovascular measures.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.ars.usda.gov/research/publications/publication/?seqNo115=308359','TEKTRAN'); return false;" href="http://www.ars.usda.gov/research/publications/publication/?seqNo115=308359"><span>Erosion of sand from a gravel <span class="hlt">bed</span></span></a></p> <p><a target="_blank" href="https://www.ars.usda.gov/research/publications/find-a-publication/">USDA-ARS?s Scientific Manuscript database</a></p> <p></p> <p></p> <p>Cleaning of fine sediment out of gravel stream <span class="hlt">beds</span> has become an important method to restore impacted stream habitats. Introducing the increased flows needed to entrain fine sediments without eroding the coarser fractions of the <span class="hlt">bed</span> and potentially destroying its usefulness as a habitat requires c...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/656579','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/656579"><span>Particle pressures in fluidized <span class="hlt">beds</span>. Final report</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Campbell, C.S.; Rahman, K.; Jin, C.</p> <p>1996-09-01</p> <p>This project studies the particle pressure, which may be thought of as the force exerted by the particulate phase of a multiphase mixture, independently of that exerted by other phases. The project is divided into two parts, one concerning gas and the other liquid fluidized <span class="hlt">beds</span>. Previous work on gas fluidized <span class="hlt">beds</span> had suggested that the particle pressures are generated by bubbling action. Thus, for these gas fluidized <span class="hlt">bed</span> studies, the particle pressure is measured around single bubbles generated in 2-D fluidized <span class="hlt">beds</span>, using special probes developed especially for this purpose. Liquid <span class="hlt">beds</span> are immune from bubbling and the particle pressures proved too small to measure directly. However, the major interest in particle pressures in liquid <span class="hlt">beds</span> lies in their stabilizing effect that arises from the effective elasticity (the derivative of the particle pressure with respect to the void fraction), they impart to the <span class="hlt">bed</span>. So rather than directly measure the particle pressure, the authors inferred the values of the elasticity from measurements of instability growth in liquid <span class="hlt">beds</span>; the inference was made by first developing a generic stability model (one with all the normally modeled coefficients left undetermined) and then working backwards to determine the unknown coefficients, including the elasticity.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/762061','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/762061"><span>Particle Pressures in Fluidized <span class="hlt">Beds</span>. Final report</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Campbell, C.S.; Rahman, K.; Jin, C.</p> <p>1996-09-01</p> <p>This project studies the particle pressure, which may be thought of as the force exerted by the particulate phase of a multiphase mixture, independently of that exerted by other phases. The project is divided into two parts, one concerning gas and the other liquid fluidized <span class="hlt">beds</span>. Previous work on gas fluidized <span class="hlt">beds</span> had suggested that the particle pressures are generated by bubbling action. Thus, for these gas fluidized <span class="hlt">bed</span> studies, the particle pressure is measured around single bubbles generated in 2-D fluidized <span class="hlt">beds</span>, using special probes developed especially for this purpose. Liquid <span class="hlt">beds</span> are immune from bubbling and the particle pressures proved too small to measure directly. However, the major interest in particle pressures in liquid <span class="hlt">beds</span> lies in their stabilizing effect that arises from the effective elasticity (the derivative of the particle pressure with respect to the void fraction): they impart to the <span class="hlt">bed</span>. So rather than directly measure the particle pressure, we inferred the values of the elasticity from measurements of instability growth in liquid <span class="hlt">beds</span> the inference was made by first developing a generic stability model (one with all the normally modeled coefficients left undetermined)and then working backwards to determine the unknown coefficients, including the elasticity.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.ars.usda.gov/research/publications/publication/?seqNo115=239955','TEKTRAN'); return false;" href="http://www.ars.usda.gov/research/publications/publication/?seqNo115=239955"><span>Characteristics of Stratified <span class="hlt">Bedded</span> Pack Dairy Manure</span></a></p> <p><a target="_blank" href="https://www.ars.usda.gov/research/publications/find-a-publication/">USDA-ARS?s Scientific Manuscript database</a></p> <p></p> <p></p> <p>"Compost" dairy barns are a relatively new housing system that generates a deep (0.9 to 1.5 m), stratified <span class="hlt">bedded</span> pack (SBP) manure source. <span class="hlt">Bedding</span> composed of sawdust, wood chips, or crop residues accumulates as additions are made to maintain a dry surface. Surface drying is promoted by a combinati...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.fs.usda.gov/treesearch/pubs/4602','TREESEARCH'); return false;" href="https://www.fs.usda.gov/treesearch/pubs/4602"><span>Replication of Pine Needle Fuel <span class="hlt">Beds</span></span></a></p> <p><a target="_blank" href="http://www.fs.usda.gov/treesearch/">Treesearch</a></p> <p>John E. Deeming; Ernest R. Elliott</p> <p>1971-01-01</p> <p>A technique for building pine needle fuel <span class="hlt">beds</span> has been developed and tested which assures uniform rates of spread and independence of the builder. Five <span class="hlt">beds</span> were constructed by each of two technicians. They were burned under identical conditions and a comparison made of the time the fires took to spread 24 inches. A t-test showed that there was no difference between...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/26427264','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/26427264"><span>Prevalence, Knowledge, and Concern About <span class="hlt">Bed</span> Bugs.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Kaylor, Mary Beth; Wenning, Paul; Eddy, Christopher</p> <p>2015-01-01</p> <p>Recent research suggests that the resurgence of <span class="hlt">bed</span> bugs in the U.S. has occurred at an alarming rate. Assumptions have been made that socioeconomic status is not associated with the prevalence of <span class="hlt">bed</span> bug infestations. Little information is available at the local level, however, about the prevalence of <span class="hlt">bed</span> bugs in private homes. The authors' pilot study aimed to identify prevalence, knowledge, and concern about <span class="hlt">bed</span> bugs in one higher income village in Ohio utilizing survey methodology. Responses from 96 individuals who completed the Prevalence, Knowledge, and Concern About <span class="hlt">Bed</span> Bugs survey were utilized for analysis. The majority of the sample respondents were white and 95% reported that they owned their residence. Only 6% knew someone with <span class="hlt">bed</span> bugs. Additionally, 52% reported they were somewhat concerned about <span class="hlt">bed</span> bugs. About 46% reported that they had changed their behavior. For a higher income area, the prevalence was dissimilar to the rate reported in the general public (about 20%). This suggests that <span class="hlt">bed</span> bugs may be an environmental issue effecting low-income populations disproportionately. Further research is needed in areas of differing socioeconomic levels.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/22232375','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/22232375"><span><span class="hlt">Bed</span> bugs: clinical relevance and control options.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Doggett, Stephen L; Dwyer, Dominic E; Peñas, Pablo F; Russell, Richard C</p> <p>2012-01-01</p> <p>Since the late 1990s, <span class="hlt">bed</span> bugs of the species Cimex lectularius and Cimex hemipterus have undergone a worldwide resurgence. These <span class="hlt">bed</span> bugs are blood-sucking insects that readily bite humans. Cutaneous reactions may occur and can start out as small macular lesions that can develop into distinctive wheals of around 5 cm in diameter, which are accompanied by intense itching. Occasionally, bullous eruptions may result. If <span class="hlt">bed</span> bugs are numerous, the patient can present with widespread urticaria or eythematous rashes. Often, bites occur in lines along the limbs. Over 40 pathogens have been detected in <span class="hlt">bed</span> bugs, but there is no definitive evidence that they transmit any disease-causing organisms to humans. Anemia may result when <span class="hlt">bed</span> bugs are numerous, and their allergens can trigger asthmatic reactions. The misuse of chemicals and other technologies for controlling <span class="hlt">bed</span> bugs has the potential to have a deleterious impact on human health, while the insect itself can be the cause of significant psychological trauma. The control of <span class="hlt">bed</span> bugs is challenging and should encompass a multidisciplinary approach utilizing nonchemical means of control and the judicious use of insecticides. For accommodation providers, risk management procedures should be implemented to reduce the potential of <span class="hlt">bed</span> bug infestations.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=3255965','PMC'); return false;" href="https://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=3255965"><span><span class="hlt">Bed</span> Bugs: Clinical Relevance and Control Options</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pmc">PubMed Central</a></p> <p>Dwyer, Dominic E.; Peñas, Pablo F.; Russell, Richard C.</p> <p>2012-01-01</p> <p>Summary: Since the late 1990s, <span class="hlt">bed</span> bugs of the species Cimex lectularius and Cimex hemipterus have undergone a worldwide resurgence. These <span class="hlt">bed</span> bugs are blood-sucking insects that readily bite humans. Cutaneous reactions may occur and can start out as small macular lesions that can develop into distinctive wheals of around 5 cm in diameter, which are accompanied by intense itching. Occasionally, bullous eruptions may result. If <span class="hlt">bed</span> bugs are numerous, the patient can present with widespread urticaria or eythematous rashes. Often, bites occur in lines along the limbs. Over 40 pathogens have been detected in <span class="hlt">bed</span> bugs, but there is no definitive evidence that they transmit any disease-causing organisms to humans. Anemia may result when <span class="hlt">bed</span> bugs are numerous, and their allergens can trigger asthmatic reactions. The misuse of chemicals and other technologies for controlling <span class="hlt">bed</span> bugs has the potential to have a deleterious impact on human health, while the insect itself can be the cause of significant psychological trauma. The control of <span class="hlt">bed</span> bugs is challenging and should encompass a multidisciplinary approach utilizing nonchemical means of control and the judicious use of insecticides. For accommodation providers, risk management procedures should be implemented to reduce the potential of <span class="hlt">bed</span> bug infestations. PMID:22232375</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19770021637','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19770021637"><span>Modeling of fluidized <span class="hlt">bed</span> silicon deposition process</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Kim, K.; Hsu, G.; Lutwack, R.; PRATURI A. K.</p> <p>1977-01-01</p> <p>The model is intended for use as a means of improving fluidized <span class="hlt">bed</span> reactor design and for the formulation of the research program in support of the contracts of Silicon Material Task for the development of the fluidized <span class="hlt">bed</span> silicon deposition process. A computer program derived from the simple modeling is also described. Results of some sample calculations using the computer program are shown.</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_15");'>15</a></li> <li><a href="#" onclick='return showDiv("page_16");'>16</a></li> <li class="active"><span>17</span></li> <li><a href="#" onclick='return showDiv("page_18");'>18</a></li> <li><a href="#" onclick='return showDiv("page_19");'>19</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_17 --> <div id="page_18" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_16");'>16</a></li> <li><a href="#" onclick='return showDiv("page_17");'>17</a></li> <li class="active"><span>18</span></li> <li><a href="#" onclick='return showDiv("page_19");'>19</a></li> <li><a href="#" onclick='return showDiv("page_20");'>20</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="341"> <li> <p><a target="_blank" onclick="trackOutboundLink('https://images.nasa.gov/#/details-PIA19076.html','SCIGOVIMAGE-NASA'); return false;" href="https://images.nasa.gov/#/details-PIA19076.html"><span>Cross-<span class="hlt">Bedding</span> at Whale Rock</span></a></p> <p><a target="_blank" href="https://images.nasa.gov/">NASA Image and Video Library</a></p> <p></p> <p>2014-12-08</p> <p>This view from the NASA Curiosity Mars rover shows an example of cross-<span class="hlt">bedding</span> that results from water passing over a loose <span class="hlt">bed</span> of sediment. It was taken at a target called Whale Rock within the Pahrump Hills outcrop at the base of Mount Sharp.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/5851779','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/5851779"><span>Fluidized-<span class="hlt">bed</span> copper oxide process</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Shah, P.P.; Takahashi, G.S.; Leshock, D.G.</p> <p>1991-10-14</p> <p>The fluidized-<span class="hlt">bed</span> copper oxide process was developed to simultaneously remove sulfur dioxide and nitrogen oxide contaminants from the flue gas of coal-fired utility boilers. This dry and regenerable process uses a copper oxide sorbent in a fluidized-<span class="hlt">bed</span> reactor. Contaminants are removed without generating waste material. (VC)</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://pubs.er.usgs.gov/publication/70023848','USGSPUBS'); return false;" href="http://pubs.er.usgs.gov/publication/70023848"><span>Measurement of the <span class="hlt">bed</span> material of gravel-<span class="hlt">bed</span> rivers</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Milhous, R.T.; ,</p> <p>2002-01-01</p> <p>The measurement of the physical properties of a gravel-<span class="hlt">bed</span> river is important in the calculation of sediment transport and physical habitat values for aquatic animals. These properties are not always easy to measure. One recent report on flushing of fines from the Klamath River did not contain information on one location because the grain size distribution of the armour could not be measured on a dry river bar. The grain size distribution could have been measured using a barrel sampler and converting the measurements to the same as would have been measured if a dry bar existed at the site. In another recent paper the porosity was calculated from an average value relation from the literature. The results of that paper may be sensitive to the actual value of porosity. Using the bulk density sampling technique based on a water displacement process presented in this paper the porosity could have been calculated from the measured bulk density. The principle topics of this paper are the measurement of the size distribution of the armour, and measurement of the porosity of the substrate. The 'standard' method of sampling of the armour is to do a Wolman-type count of the armour on a dry section of the river <span class="hlt">bed</span>. When a dry bar does not exist the armour in an area of the wet streambed is to sample and the measurements transformed analytically to the same type of results that would have been obtained from the standard Wolman procedure. A comparison of the results for the San Miguel River in Colorado shows significant differences in the median size of the armour. The method use to determine the porosity is not 'high-tech' and there is a need improve knowledge of the porosity because of the importance of porosity in the aquatic ecosystem. The technique is to measure the in-situ volume of a substrate sample by measuring the volume of a frame over the substrate and then repeated the volume measurement after the sample is obtained from within the frame. The difference in the</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://pubs.er.usgs.gov/publication/70024666','USGSPUBS'); return false;" href="http://pubs.er.usgs.gov/publication/70024666"><span>Palynology of late Middle Pennsylvanian coal <span class="hlt">beds</span> in the Appalachian Basin</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Eble, C.F.</p> <p>2002-01-01</p> <p>Fossil spores and pollen have long been recognized as valuable tools for identifying and correlating coal <span class="hlt">beds</span>. This paper describes the palynology of late Middle Pennsylvanian coal <span class="hlt">beds</span> in the Appalachian Basin with emphasis on forms that assist both intra- and interbasinal coal <span class="hlt">bed</span> correlation. Stratigraphically important palynomorphs that originate in late Middle Pennsylvanian strata include Torispora securis, Murospora kosankei, Triquitrites minutus, Cadiospora magna, Mooreisporites inusitatus, and Schopfites dimorphus. Taxa that terminate in the late Middle Pennsylvanian include Radiizonates difformis, Densosporites annulatus, Dictyotriletes bireticulatus, Vestispora magna, and Savitrisporites nux. Species of Lycospora, Cirratriradites, Vestispora, and Thymospora, as well as Granasporites medius, Triquitrites sculptilis, and T. securis and their respective ranges slightly higher, in earliest Late Pennsylvanian age strata. Late Middle Pennsylvanian and earliest Late Pennsylvanian strata in the Appalachian Basin correlate with the Radiizonates difformis (RD), Mooreisporites inusitatus (MI), Schopfites colchesterensis-S. dimorphus (CP), and Lycospora granulata-Granasporites medius (GM) spore assemblage <span class="hlt">zones</span> of the Eastern Interior, or Illinois Basin. In the Western Interior Basin, these strata correlate with the middle-upper portion of the Torispora securis-Laevigatosporites globosus (SG) and lower half of the Thymospora pseudothiessenii-Schopfites dimorphus (PD) assemblage <span class="hlt">zones</span>. In western Europe, late Middle Pennsylvanian and earliest Late Pennsylvanian strata correlate with the middle-upper portion of the Torispora securis-T. laevigata (SL) and the middle part of the Thymospora obscura-T. thiessenii (OT) spore assemblage <span class="hlt">zones</span>. Allegheny Formation coal <span class="hlt">beds</span> also correlate with the Torispora securis (X) and Thymospora obscura (XI) spore assemblages, which were developed for coal <span class="hlt">beds</span> in Great Britain. ?? 2002 Elsevier Science B.V. All rights reserved.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/835770','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/835770"><span>Development and Testing of a Moving Granular <span class="hlt">Bed</span> Filter at the Taiwan Industrial Technology Research Institute</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Peng, C.Y.; Hsiau, S-S.; Lee, H-T.; Smid, J.; Wu, T-C.</p> <p>2002-09-18</p> <p>The main purpose of developing high temperature gas cleaning technologies are to clean the gas under high temperature in order to be cost effective and to improve energy efficiency. Moving granular <span class="hlt">bed</span> filters are technically and economically applicable for high temperature cleaning system because of low cost, possible to keep operation at a constant pressure drop, simple structure, easy in operation and maintenance, no high risk internals, and more tolerant to process thermal flow. Energy and Resource Laboratories, Taiwan Industrial Technology Research Institute (ERL/ITRI) has been developing a moving granular <span class="hlt">bed</span> filter (MGBF) for BIGCC(Biomass Integrated Gasification Combined Cycle) high temperature gas cleanup. The filter granules move downwards directed by louver-like guide plates and the hot gases penetrate the MGBF horizontally. Filtration mechanisms include collection of the dust cake over the <span class="hlt">bed</span> media surface and deep <span class="hlt">bed</span> filtration. Stagnant <span class="hlt">zones</span> of filter granules combining with the dusts always exist along the louver walls. Such stagnant <span class="hlt">zones</span> often corrode the louver-like guide plates, increase the system pressure drop and decrease the total reaction efficiency that may endanger MGBF operation. Series louver and inert structure research that modify the granular flow pattern have been designed to eliminate the formation of these stagnant <span class="hlt">zones</span>. By connecting to an auxiliary dust/<span class="hlt">bed</span> media separation system, MGBF can be operated continuously at a stable pressure drop with a stable high efficiency. There are several MGBF R&D activities in progress: (1) a 3-dimensional cold flow system for testing the MGBF filtration efficiency; (2) a high temperature gas cleanup experimental system that has been designed and installed; (3) a 2-dimensional flow pattern experimental system for approving design concepts.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2013AGUFMEP22B..04H','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2013AGUFMEP22B..04H"><span>Peering inside the granular <span class="hlt">bed</span>: illuminating feedbacks between <span class="hlt">bed</span>-load transport and <span class="hlt">bed</span>-structure evolution</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Houssais, M.; Jerolmack, D. J.; Martin, R. L.</p> <p>2013-12-01</p> <p>The threshold of motion is perhaps the most important quantity to determine for understanding rates of <span class="hlt">bed</span> load transport, however it is a moving target. Decades of research show that it changes in space and in time within a river, and is highly variable among different systems; however, these differences are not mechanistically understood. Recent researchers have proposed that the critical Shields stress is strongly dependent on the local configuration of the sediment <span class="hlt">bed</span> [Frey and Church, 2011]. Critical Shields stress has been observed to change following sediment-transporting flood events in natural rivers [e.g., Turowski et al., 2011], while small-scale laboratory experiments have produced declining <span class="hlt">bed</span> load transport rates associated with slow <span class="hlt">bed</span> compaction [Charru et al., 2004]. However, no direct measurements have been made of the evolving <span class="hlt">bed</span> structure under <span class="hlt">bed</span> load transport, so the connection between granular controls and the threshold of motion remains uncertain. A perspective we adopt is that granular effects determine the critical Shields stress, while the fluid supplies a distribution of driving stresses. In order to isolate the granular effect, we undertake laminar <span class="hlt">bed</span> load transport experiments using plastic beads sheared by a viscous oil in a small, annular flume. The fluid and beads are refractive index matched, and the fluid impregnated with a fluorescing powder. When illuminated with a planar laser sheet, we are able to image slices of the granular <span class="hlt">bed</span> while also tracking the overlying sediment transport. We present the first results showing how <span class="hlt">bed</span> load transport influences granular packing, and how changes in packing influence the threshold of motion to feed back on <span class="hlt">bed</span> load transport rates. This effect may account for much of the variability observed in the threshold of motion in natural streams, and by extension offers a plausible explanation for hysteresis in <span class="hlt">bed</span> load transport rates observed during floods. Charru, F., H. Mouilleron, and</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.fs.usda.gov/treesearch/pubs/33214','TREESEARCH'); return false;" href="https://www.fs.usda.gov/treesearch/pubs/33214"><span>Influence of hyporheic flow and geomorphology on temperature of a large, gravel-<span class="hlt">bed</span> river, Clackamas River, Oregon, USA</span></a></p> <p><a target="_blank" href="http://www.fs.usda.gov/treesearch/">Treesearch</a></p> <p>Vol. 22 Hydrological Processes</p> <p>2008-01-01</p> <p>The hyporheic <span class="hlt">zone</span> influences the thermal regime of rivers, buffering temperature by storing and releasing heat over a range of timesscales. We examined the relationship between hyporheic exchange and temperature along a 24-km reach of the lower Clackamas River, a large gravel-<span class="hlt">bed</span> river in northwestern Oregon (median discharge = 75·7 m3/s;...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.fs.usda.gov/treesearch/pubs/7860','TREESEARCH'); return false;" href="https://www.fs.usda.gov/treesearch/pubs/7860"><span>The volume of fine sediment in pools: An index of sediment supply in gravel-<span class="hlt">bed</span> streams</span></a></p> <p><a target="_blank" href="http://www.fs.usda.gov/treesearch/">Treesearch</a></p> <p>Thomas E. Lisle; Sue Hilton</p> <p>1992-01-01</p> <p>Abstract - During waning flood flows in gravel-<span class="hlt">bed</span> streams, fine-grained bedload sediment (sand and fine gravel) is commonly winnowed from <span class="hlt">zones</span> of high shear stress, such as riffles, and deposited in pools, where it mantles an underlying coarse layer. As sediment load increases, more fine sediment becomes availabe to fill pools. The volume of fine sediment in pools...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/23022822','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/23022822"><span>Does <span class="hlt">bedding</span> affect the airway and allergy?</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Siebers, R W; Crane, J</p> <p>2011-04-01</p> <p>Various cross-sectional and longitudinal studies have suggested that synthetic <span class="hlt">bedding</span> is associated with asthma, allergic rhinitis and eczema while feather <span class="hlt">bedding</span> seems to be protective. Synthetic <span class="hlt">bedding</span> items have higher house dust mite allergen levels than feather <span class="hlt">bedding</span> items. This is possibly the mechanism involved although fungal and bacterial proinflammatory compounds and volatile organic compounds may play a role. In this review we present and discuss the epidemiological evidence and suggest possible mechanisms. Primary intervention studies are required to show whether feather <span class="hlt">bedding</span> is protective for the development of childhood asthma and allergic diseases while secondary intervention studies are required to potentially reduce symptoms and medication use in subjects with established disease.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2017ThEng..64...46D','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2017ThEng..64...46D"><span>Air-based coal gasification in a two-chamber gas reactor with circulating fluidized <span class="hlt">bed</span></span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Dubinin, A. M.; Tuponogov, V. G.; Kagramanov, Y. A.</p> <p>2017-01-01</p> <p>During the <span class="hlt">bed</span> gasification of solid fuels, the process temperature in the reaction <span class="hlt">zone</span> is not high enough for reaching the maximum rate of the chemical efficiency factor of the gasification process. In order to increase the chemical efficiency factor, it is necessary to supply extra heat to the reaction <span class="hlt">zone</span> to increase the reaction temperature. In this article, coal gasification in a chamber with forced fluidized <span class="hlt">bed</span> is considered and it is proposed to supply extra heat with a circulating flow of an inert particulate heat transfer agent. Circulating inert particulate material is successively heated by coal combustion in a cone chamber with bubbling fluidized <span class="hlt">bed</span> and in a combustion chamber with a spherical nozzle that inhibits the forced fluidized <span class="hlt">bed</span>. After that, the heat transfer agent heated to 930-950°C enters first in a gasification chamber with bubbling <span class="hlt">bed</span> and then in a chamber with forced fluidized <span class="hlt">bed</span>, where it transfers the physical heat to the air fuel mixture. The experiments conducted with crushed Borodinsky coal and inert particulate heat transfer agent (electrocorundum) showed the temperature rise in a gasification chamber with from 760 to 870°C and the increase in the combustible component (CO) concentration in the gasification products by 5.5%. Based on the kinetic equations of the fuel combustion reactions and the CO2 reduction to CO and on the thermal balance equations of combustion and gasification chambers, the simulation model for the gas composition and the temperature rate calculated by the height of reaction chambers was developed. The experimental temperature rates and product gas compositions are in good agreement with the simulation results based on the proposed kinetic gasification model.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/23008871','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/23008871"><span><span class="hlt">Bed</span> bugs: they are back! The role of the school nurse in <span class="hlt">bed</span> bug management.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Sciscione, Patricia</p> <p>2012-09-01</p> <p>Recently there has been a resurgence of <span class="hlt">bed</span> bugs in all facets of our society. <span class="hlt">Bed</span> bugs have even been found in schools, causing unnecessary exclusion of students and unfounded hysteria. School nurses are again called upon to be front-line sources of information to quell the hysteria and confusion related to this unsavory condition. By arming themselves with the best evidence regarding proper identification of <span class="hlt">bed</span> bugs and their bites and information about integrated prevention measures to control transmission of infestations, school nurses can contribute to the control and management of <span class="hlt">bed</span> bugs and aid in the overall battle against this "new and improved" invasion of the <span class="hlt">bed</span> bugs.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/11424670','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/11424670"><span>Chemical, physical, and environmental properties of pelleted newspaper compared to wheat straw and wood shavings as <span class="hlt">bedding</span> for horses.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Ward, P L; Wohlt, J E; Katz, S E</p> <p>2001-06-01</p> <p>Two experiments were conducted comparing pelleted recycled newspaper (PN) to wheat straw (S) and kiln-dried pine wood shavings (WS) as an animal <span class="hlt">bedding</span> material. Adult horses housed 20 to 21 h/d in boxstalls served as the animal model for comparisons. In Exp. 1 eight boxstalls, each housing one horse, were each <span class="hlt">bedded</span> with two types of PN (0.32 and 0.64 x 2.54 cm), S, and WS over four 5-d periods (replicated 4 x 4 Latin square). Initial amounts of <span class="hlt">bedding</span> materials surpassed most commercial conditions, but stalls were cleaned daily of feces only and additional clean <span class="hlt">bedding</span> was added as needed to maintain animal cleanliness, thus challenging the <span class="hlt">bedding</span> properties of each material. In Exp. 2 nine boxstalls were <span class="hlt">bedded</span> with PN (0.32 x 2.54 cm), S, and WS over three 14-d periods (three 3 x 3 Latin squares) during summer and autumn. Feces and wet spots were removed daily and clean <span class="hlt">bedding</span> was added to reestablish working volume and simulate commercial conditions. In Exp. 1 and 2 daily additions of clean <span class="hlt">bedding</span> varied (P < 0.05) with material (S > WS > PN). The higher water-holding capacity of PN and WS contributed to fewer <span class="hlt">bedding</span> replacements. Usage of each material was greater (P < 0.05) during the autumn; PN had the greatest increase. Type of material and season also influenced <span class="hlt">bedding</span> environment. <span class="hlt">Bedding</span> pH increased (P < 0.05) with use and was highest in PN and lowest in S. Higher concentrations of breathable NH3 N were present in stalls <span class="hlt">bedded</span> with PN and during autumn. Higher pH of used PN and decreased ventilation due to closed doors and windows during autumn were contributing factors. Season, type of <span class="hlt">bedding</span>, and duration of its use affected (P < 0.05) numbers as well as species of microorganisms present in the breathing <span class="hlt">zone</span>, nasal cavity, and on the leg of the horse. Clean and used WS contained greater (P < 0.05) quantities of particle fines, but with 5 d of use, particle fines in PN also increased. Quantities of breathable dust during cleaning of stalls</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2015JSG....77..175D','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2015JSG....77..175D"><span>Cross-<span class="hlt">bedding</span> related anisotropy and its interplay with various boundary conditions in the formation and orientation of joints in an aeolian sandstone</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Deng, Shang; Cilona, Antonino; Morrow, Carolyn; Mapeli, Cesar; Liu, Chun; Lockner, David; Prasad, Manika; Aydin, Atilla</p> <p>2015-08-01</p> <p>Previous research revealed that the cross-<span class="hlt">bedding</span> related anisotropy in Jurassic aeolian Aztec Sandstone cropping out in the Valley of Fire State Park, Nevada, affects the orientation of compaction bands, also known as anti-cracks or closing mode structures. We hypothesize that cross-<span class="hlt">bedding</span> should have a similar influence on the orientation of the opening mode joints within the same rock at the same location. To test this hypothesis, we investigated the relationship between the orientation of cross-<span class="hlt">beds</span> and the orientation of different categories of joint sets including cross-<span class="hlt">bed</span> package confined joints and joint <span class="hlt">zones</span> in the Aztec Sandstone. The field data show that the cross-<span class="hlt">bed</span> package confined joints occur at high-angle to <span class="hlt">bedding</span> and trend roughly parallel to the dip direction of the cross-<span class="hlt">beds</span>. In comparison, the roughly N-S trending joint <span class="hlt">zones</span> appear not to be influenced by the cross-<span class="hlt">beds</span> in any significant way but frequently truncate against the dune boundaries. To characterize the anisotropy due to cross-<span class="hlt">bedding</span> in the Aztec Sandstone, we measured the P-wave velocities parallel and perpendicular to <span class="hlt">bedding</span> from 11 samples and determined an average P-wave anisotropy to be slightly larger than 13%. From these results, a model based on the generalized Hooke's law for anisotropic materials is used to analyze deformation of cross-<span class="hlt">bedded</span> sandstone as a transversely isotropic material. In the analysis, the dip angle of cross-<span class="hlt">beds</span> is assumed to be constant and the strike orientation varying from 0° to 359° in the east (x), north (y), and up (z) coordinate system. We find qualitative agreement between most of the model results and the observed field relations between cross-<span class="hlt">beds</span> and the corresponding joint sets. The results also suggest that uniaxial extension (εzz > εxx = εyy = 0) and axisymmetric extension (εxx = εyy < εzz and εxx = εyy > εzz) would amplify the influence of cross-<span class="hlt">bedding</span> associated anisotropy on the joint orientation whereas a</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2010AGUFMOS53C1398L','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2010AGUFMOS53C1398L"><span>Mechanisms of turbulence production and dissipation within an idealised permeable <span class="hlt">bed</span> revealed using endoscopic PIV</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Lead, J.; Sambrook Smith, G.; Best, J.; Hardy, R. J.; Blois, G.</p> <p>2010-12-01</p> <p>Porous media are encountered in a wide variety of geophysical systems such as subsurface reservoirs, non-cohesive sediment <span class="hlt">beds</span> and forests. As the <span class="hlt">bed</span> permeability and free flow velocity increase, the pore flow may become turbulent, resulting in the initiation of coherent flow structures within the pore space (non-Darcian flows). This situation is commonly found for cases that can be classified as ‘hybrid porous media’, i.e. those that possess a fluid-saturated porous media bounded by a free-stream flow. Many geophysical environments, such as gravel-<span class="hlt">bed</span> rivers and vegetation immersed within atmospheric boundary layers, can be classified as such. In these systems, turbulence penetrates from the free-stream domain and may extend to a significant portion of the porous domain. Thus for river <span class="hlt">beds</span> there will be a transition from a turbulent to a laminar regime (Goharzadeh et al. 2005) with depth within the <span class="hlt">bed</span>. Pore-space turbulence in such environments is significant as it controls pore-space mixing and governs the kinetics of the bio-chemical processes occurring within the hyporheic <span class="hlt">zone</span> as well as sediment infiltration. However, the nature of turbulence at the scale of the individual pore space, and the formation of pore-space coherent structures, remains largely unexplored due to the technical challenges of collecting data within a porous media. This paper details the initiation and evolution of coherent vortical structures within the individual pore spaces of a permeable <span class="hlt">bed</span> submerged by a free stream flow. Laboratory experiments were conducted using an idealised permeable <span class="hlt">bed</span> constructed by packing uniform size spheres (D = 0.04 m) in a cubic arrangement. The instantaneous structure of flow within the permeable <span class="hlt">bed</span> was obtained using a novel high-resolution E-PIV (Endoscopic Particle Image Velocimetry) technique that allowed visualisation of coherent vortices in the pore space, as well as investigation of their formative mechanisms and temporal evolution</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/862999','DOE-PATENT-XML'); return false;" href="http://www.osti.gov/scitech/servlets/purl/862999"><span>Method for loading resin <span class="hlt">beds</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/doepatents">DOEpatents</a></p> <p>Notz, Karl J.; Rainey, Robert H.; Greene, Charles W.; Shockley, William E.</p> <p>1978-01-01</p> <p>An improved method of preparing nuclear reactor fuel by carbonizing a uranium loaded cation exchange resin provided by contacting a H.sup.+ loaded resin with a uranyl nitrate solution deficient in nitrate, comprises providing the nitrate deficient solution by a method comprising the steps of reacting in a reaction <span class="hlt">zone</span> maintained between about 145.degree.-200.degree. C, a first aqueous component comprising a uranyl nitrate solution having a boiling point of at least 145.degree. C with a second aqueous component to provide a gaseous phase containing HNO.sub.3 and a reaction product comprising an aqueous uranyl nitrate solution deficient in nitrate.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2011JHyd..402..297G','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2011JHyd..402..297G"><span>An equation for <span class="hlt">bed</span>-load transport capacities in gravel-<span class="hlt">bed</span> rivers</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Gao, Peng</p> <p>2011-05-01</p> <p>SummaryDetailed hydraulic and sedimentary information is needed to accurately predict <span class="hlt">bed</span>-load transport rates in natural gravel-<span class="hlt">bed</span> rivers. Yet, being able to estimate maximum transport rates from simple measurements would greatly benefit various sediment-related river management practices. To this end, a new concept of <span class="hlt">bed</span>-load transport capacity for heterogeneous grains in gravel-<span class="hlt">bed</span> rivers was introduced as the maximum possible transport rate a gravel-<span class="hlt">bed</span> river can have for a given value of dimensionless shear stress, calculated using the median size of <span class="hlt">bed</span>-load grains. Flows that can transport <span class="hlt">bed</span> load at capacity may be identified by the criterion that the median size of <span class="hlt">bed</span>-load grains must be greater than or equal to that of the <span class="hlt">bed</span> substrate. Then, a single coefficient, power equation was developed to predict such capacities using <span class="hlt">bed</span>-load capacity data covering both low flows with an armor layer and high flows without it. The good performance of this empirical equation was confirmed by comparing its predictability with that of Mayer Peter and Muller's and Bagnold's <span class="hlt">bed</span>-load equations. Using an independent data compiled from six gravel-<span class="hlt">bed</span> rivers in Idaho, not only was the empirical equation validated but also the criterion for identifying the condition under which <span class="hlt">bed</span> load is transported at capacity was tested. In practice, the empirical equation can be used to estimate the maximum possible <span class="hlt">bed</span>-load transport rates during high flow events, which is useful for various sediment-related river managements.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19840005139','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19840005139"><span>Microgravity silicon <span class="hlt">zoning</span> investigation</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Kern, E. L.; Gill, G. L., Jr.</p> <p>1983-01-01</p> <p>A resistance heated zoner, suitable for early <span class="hlt">zoning</span> experiments with silicon, was designed and put into operation. The initial power usage and size was designed for an shown to be compatible with payload carriers contemplated for the Shuttle. This equipment will be used in the definition and development of flight experiments and apparatus for float <span class="hlt">zoning</span> silicon and other materials in microgravity.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19760010527','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19760010527"><span>Coastal <span class="hlt">zone</span> management</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Tilton, E. L., III</p> <p>1975-01-01</p> <p>A panel of federal and state representatives concerned with coastal <span class="hlt">zone</span> affairs discussed their problems in this area. In addition, several demonstrations of the application of remote sensing technology to coastal <span class="hlt">zone</span> management were described. These demonstrations were performed by several agencies in a variety of geographical areas.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2013EGUGA..1512192C','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2013EGUGA..1512192C"><span>Subduction of fracture <span class="hlt">zones</span></span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Constantin Manea, Vlad; Gerya, Taras; Manea, Marina; Zhu, Guizhi; Leeman, William</p> <p>2013-04-01</p> <p>Since Wilson proposed in 1965 the existence of a new class of faults on the ocean floor, namely transform faults, the geodynamic effects and importance of fracture <span class="hlt">zone</span> subduction is still little studied. It is known that oceanic plates are characterized by numerous fracture <span class="hlt">zones</span>, and some of them have the potential to transport into subduction <span class="hlt">zones</span> large volumes of water-rich serpentinite, providing a fertile water source for magma generated in subduction-related arc volcanoes. In most previous geodynamic studies, subducting plates are considered to be homogeneous, and there is no clear indication how the subduction of a fracture <span class="hlt">zone</span> influences the melting pattern in the mantle wedge and the slab-derived fluids distribution in the subarc mantle. Here we show that subduction of serpentinized fracture <span class="hlt">zones</span> plays a significant role in distribution of melt and fluids in the mantle wedge above the slab. Using high-resolution tree-dimensional coupled petrological-termomechanical simulations of subduction, we show that fluids, including melts and water, vary dramatically in the region where a serpentinized fracture <span class="hlt">zone</span> enters into subduction. Our models show that substantial hydration and partial melting tend to concentrate where fracture <span class="hlt">zones</span> are being subducted, creating favorable conditions for partially molten hydrous plumes to develop. These results are consistent with the along-arc variability in magma source compositions and processes in several regions, as the Aleutian Arc, the Cascades, the Southern Mexican Volcanic Arc, and the Andean Southern Volcanic <span class="hlt">Zone</span>.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.lymphoma.org/atf/cf/%7BAAF3B4E5-2C43-404C-AFE5-FD903C87B254%7D/LRF_FACTSHEET_MZL_2013.PDF','NIH-MEDLINEPLUS'); return false;" href="http://www.lymphoma.org/atf/cf/%7BAAF3B4E5-2C43-404C-AFE5-FD903C87B254%7D/LRF_FACTSHEET_MZL_2013.PDF"><span>Marginal <span class="hlt">Zone</span> Lymphoma</span></a></p> <p><a target="_blank" href="http://medlineplus.gov/">MedlinePlus</a></p> <p></p> <p></p> <p>... <span class="hlt">zone</span> lymphomas are a group of indolent (slow-growing) NHL B-cell lymphomas, which account for approximately 12 percent of all B-cell lymphomas. The median age for diagnosis is 65 years old. There are three types of marginal <span class="hlt">zone</span> lymphoma: ...</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_16");'>16</a></li> <li><a href="#" onclick='return showDiv("page_17");'>17</a></li> <li class="active"><span>18</span></li> <li><a href="#" onclick='return showDiv("page_19");'>19</a></li> <li><a href="#" onclick='return showDiv("page_20");'>20</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_18 --> <div id="page_19" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_17");'>17</a></li> <li><a href="#" onclick='return showDiv("page_18");'>18</a></li> <li class="active"><span>19</span></li> <li><a href="#" onclick='return showDiv("page_20");'>20</a></li> <li><a href="#" onclick='return showDiv("page_21");'>21</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="361"> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.fs.usda.gov/treesearch/pubs/21010','TREESEARCH'); return false;" href="https://www.fs.usda.gov/treesearch/pubs/21010"><span>Longleaf pine site <span class="hlt">zones</span></span></a></p> <p><a target="_blank" href="http://www.fs.usda.gov/treesearch/">Treesearch</a></p> <p>Phillip J. Craul; John S. Kush; William D. Boyer</p> <p>2005-01-01</p> <p>The authors delineate six major climatic areas of the longleaf pine (Pinus palustris Mill.) region. They subdivide these areas into 21 site <span class="hlt">zones</span>, each of which is deemed homogenous with respect to climate, physiography, and soils. The site <span class="hlt">zones</span> are mapped and their climate, physiography, and soils described. The authors recommend that plantings of...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://eric.ed.gov/?q=dead+AND+zones&id=EJ876139','ERIC'); return false;" href="http://eric.ed.gov/?q=dead+AND+zones&id=EJ876139"><span>Investigating Aquatic Dead <span class="hlt">Zones</span></span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Testa, Jeremy; Gurbisz, Cassie; Murray, Laura; Gray, William; Bosch, Jennifer; Burrell, Chris; Kemp, Michael</p> <p>2010-01-01</p> <p>This article features two engaging high school activities that include current scientific information, data, and authentic case studies. The activities address the physical, biological, and chemical processes that are associated with oxygen-depleted areas, or "dead <span class="hlt">zones</span>," in aquatic systems. Students can explore these dead <span class="hlt">zones</span> through both…</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.dtic.mil/docs/citations/ADA185640','DTIC-ST'); return false;" href="http://www.dtic.mil/docs/citations/ADA185640"><span>Urban Terrain <span class="hlt">Zone</span> Characteristics</span></a></p> <p><a target="_blank" href="http://www.dtic.mil/">DTIC Science & Technology</a></p> <p></p> <p>1987-09-01</p> <p>function . An example of the interaction of some of these can result in an exposed surface of decorative brick veneer on a framed stracture . Or, a...Classification System for HOUT Studies . . . . . . . . .- ..- . . . . . . 14 2. Urban Terrain <span class="hlt">Zones</span> Function /Morphology Relationship...By Function --All Cities Aggregated . . . . . . . . . . . . . . . . . . . 69 6. Building Types: Major Terrain <span class="hlt">Zones</span> . . . . ...... 103 7. Urban Terrain</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://eric.ed.gov/?q=Oxygen&pg=3&id=EJ876139','ERIC'); return false;" href="https://eric.ed.gov/?q=Oxygen&pg=3&id=EJ876139"><span>Investigating Aquatic Dead <span class="hlt">Zones</span></span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Testa, Jeremy; Gurbisz, Cassie; Murray, Laura; Gray, William; Bosch, Jennifer; Burrell, Chris; Kemp, Michael</p> <p>2010-01-01</p> <p>This article features two engaging high school activities that include current scientific information, data, and authentic case studies. The activities address the physical, biological, and chemical processes that are associated with oxygen-depleted areas, or "dead <span class="hlt">zones</span>," in aquatic systems. Students can explore these dead <span class="hlt">zones</span> through both…</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.fs.usda.gov/treesearch/pubs/41438','TREESEARCH'); return false;" href="https://www.fs.usda.gov/treesearch/pubs/41438"><span>California tree seed <span class="hlt">zones</span></span></a></p> <p><a target="_blank" href="http://www.fs.usda.gov/treesearch/">Treesearch</a></p> <p>John M. Buck; Ronald S. Adams; Jerrold Cone; M. Thompson Conkle; William J. Libby; Cecil J. Eden; Michel J. Knight</p> <p>1970-01-01</p> <p>California forest tree seed <span class="hlt">zones</span> were established originally by Fowells (1946), with revisions proposed by Roy (1963) and Schubert (1966). The Forest Tree Seed Committee of the Northern California Section, Society of American Foresters, has revised the original <span class="hlt">zones</span> and updated the recording system described in the earlier reports. Fowells' (1946) Research Note...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19810010617','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19810010617"><span>Float <span class="hlt">Zone</span> Workshop</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Naumann, R. J.</p> <p>1980-01-01</p> <p>A summary of the Analytical Float <span class="hlt">Zone</span> Experiment System (AFZES) concept is presented. The types of experiments considered for such a facility are discussed. Reports from various industrial producers and users of float <span class="hlt">zone</span> material are presented. Special emphasis is placed on state-of-the-art developments in low gravity manufacturing and their applications to space processing.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2016AGUFMEP41B0915Z','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2016AGUFMEP41B0915Z"><span>On different regime relations between <span class="hlt">bed</span> load transport and <span class="hlt">bed</span> topography</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Zhang, L.; Ma, H.; Fu, X.; Duan, J. G.</p> <p>2016-12-01</p> <p><span class="hlt">Bed</span> load transport is determined by the effective part of the total shear stress subtracting the form drag that arises from <span class="hlt">bed</span> topography. Wang et al. (2004) quantified the overall topographic roughness of the channel <span class="hlt">bed</span> with the parameter Sp and claimed that the increasing Sp corresponds with increasing flow resistance and decreasing <span class="hlt">bed</span> load transport rate due to increasing form drag and decreasing skin friction. However, the flume experiments for non-uniform sediment transport on steep slope at the University of Arizona show opposite results that <span class="hlt">bed</span> load transport increases with Sp. We investigate the physical reason of the contrasting results for the full understanding of the different regimes between <span class="hlt">bed</span> load transport and <span class="hlt">bed</span> topography. We develop the energy conveyance equation for water flow and <span class="hlt">bed</span> load transport and apply it to the development of the equilibrium relation between <span class="hlt">bed</span> load transport and energy dissipation due to the form drag. The energy theory for <span class="hlt">bed</span> load transport shows that since our flume experiments achieved the equilibrium transport state with water and sediment circulating supplying, the <span class="hlt">bed</span> topography Sp is determined by the flow and sediment grain size, and the <span class="hlt">bed</span> load transport is positively related to the energy dissipation rate which is thus positively related to Sp. However, in the field experiment of Wang et al. (2004), at first, the referenced Sp is determined by the most recent significant flood whereas the <span class="hlt">bed</span> load transport is always below the transport capacity with insufficient sediment supply. After one-time sediment feed, the <span class="hlt">bed</span> load transport rapidly varies from ephemeral full capacity state to sediment starving state. In this process, the removal of relative fine sediment results in the rapid increment of Sp from the instant equilibrium state to the referenced Sp whereas the coarsen <span class="hlt">bed</span> leads to decrement of <span class="hlt">bed</span> load transport. Eventually, the sediment starving state results in the increasing Sp and decreasing</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://pubs.er.usgs.gov/publication/70029251','USGSPUBS'); return false;" href="http://pubs.er.usgs.gov/publication/70029251"><span>Geochemistry, petrology, and palynology of the Pond Creek coal <span class="hlt">bed</span>, northern Pike and southern Martin counties, Kentucky</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Hower, J.C.; Ruppert, L.F.; Eble, C.F.; Clark, W.L.</p> <p>2005-01-01</p> <p>The geochemistry, petrology, and palynology of the Duckmantian-age Pond Creek coal <span class="hlt">bed</span> were investigated in northern Pike and southern Martin counties, eastern Kentucky. The coal <span class="hlt">bed</span> exhibits significant vertical variation in the investigated geochemical parameters, with many diagenetic overprints of the original geochemistry. Included in the range of geochemical signatures are the presence of elements, particularly TiO2 and Zr, suggesting the detrital influences at the time of deposition of a low-vitrinite durain; a high CaO <span class="hlt">zone</span> with elevated B/Be, both suggesting marine influence, in a lithotype in the middle of the coal <span class="hlt">bed</span>; and the postdepositional emplacement of pyrite in the uppermost lithotype. Individual lithotypes, each representing distinct depositional environments, all complicated to some degree by diagentic overprints, comprise the complex history of the coal <span class="hlt">bed</span>. ?? 2004 Elsevier B.V. All rights reserved.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2003QSRv...22.1361S','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2003QSRv...22.1361S"><span>Dating the Naisiusiu <span class="hlt">Beds</span>, Olduvai Gorge, by electron spin resonance</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Skinner, A. R.; Hay, R. L.; Masao, F.; Blackwell, B. A. B.</p> <p>2003-05-01</p> <p>The lower <span class="hlt">beds</span> at Olduvai Gorge are well known for containing early hominid fossils and Oldowan stone tools, and their ages have been established by 40Ar/ 39Ar dating and paleomagnetic stratigraphy. Ages are generally less certain for the upper deposits at Olduvai Gorge because of the scarcity of datable tuffs. The youngest archaeologically significant site at Olduvai is microlithic LSA, which lies in the type section of the Naisiusiu <span class="hlt">Beds</span>. The age for the site is controversial, with 14C dates of 17,000-17,550 (Hay, R.L., 1976 Geology of Olduvai Gorge, University of California Press, Berkeley) and >42,000 BP (Manega, P.C., 1993. Geochronology, geochemistry, and isotopic study of the Plio-Pleistocene Hominid sites and the Ngorongoro Volcanic Highland in Northern Tanzania. Unpublished Ph.D. Thesis, University of Colorado, Boulder, CO). The tuff <span class="hlt">bed</span> in the <span class="hlt">zone</span> with artifacts does not contain materials datable by 40Ar/ 39Ar, and some other dating method was needed. In the summer of 2001, five equid teeth were collected from the type Naisiusiu site. Another tooth had previously been collected. ESR ages have been determined for three teeth from the archaeological level and their ages cluster around 62±5 ka, assuming linear uranium uptake. Another tooth from a level without artifacts and believed to be significantly younger dated to 39±5 ka, again assuming LU. These dates are considerably older than previous estimates and suggest that the East African MSA/LSA transition occurred very early.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/20030062828','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/20030062828"><span>The Virtual Test <span class="hlt">Bed</span> Project</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Rabelo, Luis C.</p> <p>2002-01-01</p> <p>This is a report of my activities as a NASA Fellow during the summer of 2002 at the NASA Kennedy Space Center (KSC). The core of these activities is the assigned project: the Virtual Test <span class="hlt">Bed</span> (VTB) from the Spaceport Engineering and Technology Directorate. The VTB Project has its foundations in the NASA Ames Research Center (ARC) Intelligent Launch & Range Operations program. The objective of the VTB project is to develop a new and unique collaborative computing environment where simulation models can be hosted and integrated in a seamless fashion. This collaborative computing environment will be used to build a Virtual Range as well as a Virtual Spaceport. This project will work as a technology pipeline to research, develop, test and validate R&D efforts against real time operations without interfering with the actual operations or consuming the operational personnel s time. This report will also focus on the systems issues required to conceptualize and provide form to a systems architecture capable of handling the different demands.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/983805','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/983805"><span>CERTS Microgrid Laboratory Test <span class="hlt">Bed</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Lasseter, R. H.; Eto, J. H.; Schenkman, B.; Stevens, J.; Volkmmer, H.; Klapp, D.; Linton, E.; Hurtado, H.; Roy, J.</p> <p>2010-06-08</p> <p>CERTS Microgrid concept captures the emerging potential of distributed generation using a system approach. CERTS views generation and associated loads as a subsystem or a 'microgrid'. The sources can operate in parallel to the grid or can operate in island, providing UPS services. The system can disconnect from the utility during large events (i.e. faults, voltage collapses), but may also intentionally disconnect when the quality of power from the grid falls below certain standards. CERTS Microgrid concepts were demonstrated at a full-scale test <span class="hlt">bed</span> built near Columbus, Ohio and operated by American Electric Power. The testing fully confirmed earlier research that had been conducted initially through analytical simulations, then through laboratory emulations, and finally through factory acceptance testing of individual microgrid components. The islanding and resynchronization method met all Institute of Electrical and Electronics Engineers Standard 1547 and power quality requirements. The electrical protection system was able to distinguish between normal and faulted operation. The controls were found to be robust under all conditions, including difficult motor starts and high impedance faults.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19840012564','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19840012564"><span>Test <span class="hlt">bed</span> ion engine development</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Aston, G.; Deininger, W. D.</p> <p>1984-01-01</p> <p>A test <span class="hlt">bed</span> ion (TBI) engine was developed to serve as a tool in exploring the limits of electrostatic ion thruster performance. A description of three key ion engine components, the decoupled extraction and amplified current (DE-AC) accelerator system, field enhanced refractory metal (FERM) hollow cathode and divergent line cusp (DLC) discharge chamber, whose designs and operating philosophies differ markedly from conventional thruster technology is given. Significant program achievements were: (1) high current density DE-AC accelerator system operation at low electric field stress with indicated feasibility of a 60 mA/sq cm argon ion beam; (2) reliable FERM cathode start up times of 1 to 2 secs. and demonstrated 35 ampere emission levels; (3) DLC discharge chamber plasma potentials negative of anode potential; and (4) identification of an efficient high plasma density engine operating mode. Using the performance projections of this program and reasonable estimates of other parameter values, a 1.0 Newton thrust ion engine is identified as a realizable technology goal. Calculations show that such an engine, comparable in beam area to a J series 30 cm thruster, could, operating on Xe or Hg, have thruster efficiencies as high as 0.76 and 0.78 respectively, with a 100 eV/ion discharge loss.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/478157','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/478157"><span>Keeping tabs on seagrass <span class="hlt">beds</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Kuhl, D.E.; Sargent, F.J.; Leary, T.J.</p> <p>1997-06-01</p> <p>Seagrasses form the foundation of complex, fragile communities that include marine and estuarine animals, especially larval and juvenile fish, providing critical shelter and sustenance. Seagrasses also have a role in providing habitat for waterfowl, marine turtles and manimals. In addition, seagrasses improve water quality by stabilizing mobile sediments and converting some pollutants into plant biomass. The issue of propeller scarring or propeller dredging in seagrass <span class="hlt">beds</span> has received much attention since 1990. The scarring of seagrass results from personal watercraft. Heightened interest has instigated numerous monitoring and mapping projects on propeller scarring and regrowth characteristics within seagrasses. The study areas selected for this paper are located within Tampa Bay, Florida. Specifically, they are Shell Island and Miquel Bay. Spatial monitoring for the extent of seagrass scarring in the Tampa Bay region was conducted in two ways, a regional (general) approach and a site specific (detailed) approach. Regional monitoring assessed the status of seagrass in Tampa Bay and identified {open_quote}hot spots{close_quote}. After identifying {open_quote}hot spots{close_quote}, boat surveys were used to confirm or deny the initial assessment. This poster involves the design of a propeller scarring monitoring program using several methods: Hi8 video, digital cameras, film cameras, and differential GPS combined with Arcview. A pilot program to evaluate the adequacy of these monitoring devices and the recommendation of specific actions in areas of severe propeller scarring will be presented.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/27115446','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/27115446"><span>Condensation in Nanoporous Packed <span class="hlt">Beds</span>.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Ally, Javed; Molla, Shahnawaz; Mostowfi, Farshid</p> <p>2016-05-10</p> <p>In materials with tiny, nanometer-scale pores, liquid condensation is shifted from the bulk saturation pressure observed at larger scales. This effect is called capillary condensation and can block pores, which has major consequences in hydrocarbon production, as well as in fuel cells, catalysis, and powder adhesion. In this study, high pressure nanofluidic condensation studies are performed using propane and carbon dioxide in a colloidal crystal packed <span class="hlt">bed</span>. Direct visualization allows the extent of condensation to be observed, as well as inference of the pore geometry from Bragg diffraction. We show experimentally that capillary condensation depends on pore geometry and wettability because these factors determine the shape of the menisci that coalesce when pore filling occurs, contrary to the typical assumption that all pore structures can be modeled as cylindrical and perfectly wetting. We also observe capillary condensation at higher pressures than has been done previously, which is important because many applications involving this phenomenon occur well above atmospheric pressure, and there is little, if any, experimental validation of capillary condensation at such pressures, particularly with direct visualization.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/863989','DOE-PATENT-XML'); return false;" href="http://www.osti.gov/scitech/servlets/purl/863989"><span>Fluidized <span class="hlt">bed</span> combustor and tube construction therefor</span></a></p> <p><a target="_blank" href="http://www.osti.gov/doepatents">DOEpatents</a></p> <p>De Feo, Angelo; Hosek, William</p> <p>1981-01-01</p> <p>A fluidized <span class="hlt">bed</span> combustor comprises a reactor or a housing which has a windbox distributor plate adjacent the lower end thereof which contains a multiplicity of hole and air discharge nozzles for discharging air and coal into a fluidized <span class="hlt">bed</span> which is maintained above the distributor plate and below a take-off connection or flue to a cyclone separator in which some of the products of combustion are treated to remove the dust which is returned into the fluidized <span class="hlt">bed</span>. A windbox is spaced below the fluidized <span class="hlt">bed</span> and it has a plurality of tubes passing therethrough with the passage of combustion air and fluidizing air which passes through an air space so that fluidizing air is discharged into the reaction chamber fluidized <span class="hlt">bed</span> at the bottom thereof to maintain the <span class="hlt">bed</span> in a fluidized condition. A fluid, such as air, is passed through the tubes which extend through the windbox and provide a preheating of the combustion air and into an annular space between telescoped inner and outer tubes which comprise heat exchanger tubes or cooling tubes which extend upwardly through the distributor plate into the fluidized <span class="hlt">bed</span>. The heat exchanger tubes are advantageously arranged so that they may be exposed in groups within the reactor in a cluster which is arranged within holding rings.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/865097','DOE-PATENT-XML'); return false;" href="http://www.osti.gov/scitech/servlets/purl/865097"><span>Tube construction for fluidized <span class="hlt">bed</span> combustor</span></a></p> <p><a target="_blank" href="http://www.osti.gov/doepatents">DOEpatents</a></p> <p>De Feo, Angelo; Hosek, William</p> <p>1984-01-01</p> <p>A fluidized <span class="hlt">bed</span> combustor comprises a reactor or a housing which has a windbox distributor plate adjacent the lower end thereof which contains a multiplicity of hole and air discharge nozzles for discharging air and coal into a fluidized <span class="hlt">bed</span> which is maintained above the distributor plate and below a take-off connection or flue to a cyclone separator in which some of the products of combustion are treated to remove the dust which is returned into the fluidized <span class="hlt">bed</span>. A windbox is spaced below the fluidized <span class="hlt">bed</span> and it has a plurality of tubes passing therethrough with the passage of combustion air and fluidizing air which passes through an air space so that fluidizing air is discharged into the reaction chamber fluidized <span class="hlt">bed</span> at the bottom thereof to maintain the <span class="hlt">bed</span> in a fluidized condition. A fluid, such as air, is passed through the tubes which extend through the windbox and provide a preheating of the combustion air and into an annular space between telescoped inner and outer tubes which comprise heat exchanger tubes or cooling tubes which extend upwardly through the distributor plate into the fluidized <span class="hlt">bed</span>. The heat exchanger tubes are advantageously arranged so that they may be exposed in groups within the reactor in a cluster which is arranged within holding rings.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=5308437','PMC'); return false;" href="https://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=5308437"><span>Factors Associated With Infant <span class="hlt">Bed</span>-Sharing</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pmc">PubMed Central</a></p> <p>Heere, Megan; Moughan, Beth; Alfonsi, Joseph; Rodriguez, Jennifer; Aronoff, Stephen</p> <p>2017-01-01</p> <p>Objective: <span class="hlt">Bed</span>-sharing is associated with sudden infant death syndrome and accidental suffocation and strangulation in <span class="hlt">bed</span>. The purpose of this study was to identify risk factors for newborn <span class="hlt">bed</span>-sharing. Methods: Postpartum mothers from a university maternity service were contacted by phone to complete a survey. Demographic and environmental data were collected; newborn <span class="hlt">bed</span>-sharing and sleep environment were self-reported. Results: A total of 1261 mothers completed surveys; <span class="hlt">bed</span>-sharing was reported by 79 mothers (6.3%). Multivariate logistic regression identified referral to a nurse (odds ratio [OR] = 10; 95% confidence interval [CI] = 4.5-30) and sleep location “other” than a crib, bassinet, or Pack and Play (OR = 7.1; 95% CI = 1.9-25.9) as factors associated with an increased risk of <span class="hlt">bed</span>-sharing; formula feeding (OR = 0.4; 95% CI = 0.20-0.77) and crib sleeping (OR = 0.49; 95% CI = 0.26-0.86) reduced this risk. Conclusion: Infants with no identifiable places to sleep, significant health issues, and who are breastfed are more likely to <span class="hlt">bed</span>-share. Interventional studies should be directed at these factors. PMID:28229101</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/17018212','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/17018212"><span>Preference for <span class="hlt">bedding</span> material in Syrian hamsters.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Lanteigne, M; Reebs, S G</p> <p>2006-10-01</p> <p>This study aimed to determine whether Syrian (golden) hamsters, Mesocricetus auratus, prefer certain <span class="hlt">bedding</span> materials and whether <span class="hlt">bedding</span> material can affect paw condition, body weight gain and wheel-running activity. In a first experiment, 26 male hamsters had access to two connected cages, each cage containing a different <span class="hlt">bedding</span> material (either pine shavings, aspen shavings, corn cob or wood pellets). In a second experiment, 14 male hamsters had access to four connected cages that contained the different <span class="hlt">bedding</span> materials and also a piece of paper towel to serve as nest material. In a third experiment, 30 male hamsters were each placed in a single cage, 10 of them with pine shavings, 10 with aspen shavings and 10 with corn cob, and they were monitored for 50 days. Significant preferences in the first experiment were: pine shavings over aspen shavings, corn cob over wood pellets, pine shavings over corn cob and aspen shavings over wood pellets (aspen shavings versus corn cob was not tested). However, there was no significant preference expressed in the second experiment, suggesting that the general preference for shavings in the first experiment was based on <span class="hlt">bedding</span> material suitability as a nesting material. No significant effect of <span class="hlt">bedding</span> material on paw condition, body weight gain and wheel-running activity was detected. None of the four <span class="hlt">bedding</span> materials tested in this study can be judged to be inappropriate in the short term if nesting material is added to the cage and if the litter is changed regularly.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/25638338','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/25638338"><span>Modeling nitrate removal in a denitrification <span class="hlt">bed</span>.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Ghane, Ehsan; Fausey, Norman R; Brown, Larry C</p> <p>2015-03-15</p> <p>Denitrification <span class="hlt">beds</span> are promoted to reduce nitrate load in agricultural subsurface drainage water to alleviate the adverse environmental effects associated with nitrate pollution of surface water. In this system, drainage water flows through a trench filled with a carbon media where nitrate is transformed into nitrogen gas under anaerobic conditions. The main objectives of this study were to model a denitrification <span class="hlt">bed</span> treating drainage water and evaluate its adverse greenhouse gas emissions. Field experiments were conducted at an existing denitrification <span class="hlt">bed</span>. Evaluations showed very low greenhouse gas emissions (mean N2O emission of 0.12 μg N m(-2) min(-1)) from the denitrification <span class="hlt">bed</span> surface. Field experiments indicated that nitrate removal rate was described by Michaelis-Menten kinetics with the Michaelis-Menten constant of 7.2 mg N L(-1). We developed a novel denitrification <span class="hlt">bed</span> model based on the governing equations for water flow and nitrate removal kinetics. The model evaluation statistics showed satisfactory prediction of <span class="hlt">bed</span> outflow nitrate concentration during subsurface drainage flow. The model can be used to design denitrification <span class="hlt">beds</span> with efficient nitrate removal which in turn leads to enhanced drainage water quality.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/28140584','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/28140584"><span>Carbon Sequestration in Olivine and Basalt Powder Packed <span class="hlt">Beds</span>.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Xiong, Wei; Wells, Rachel K; Giammar, Daniel E</p> <p>2017-02-21</p> <p>Fractures and pores in basalt could provide substantial pore volume and surface area of reactive minerals for carbonate mineral formation in geologic carbon sequestration. In many fractures solute transport will be limited to diffusion, and opposing chemical gradients that form as a result of concentration differences can lead to spatial distribution of silicate mineral dissolution and carbonate mineral precipitation. Glass tubes packed with grains of olivine or basalt with different grain sizes and compositions were used to explore the identity and spatial distribution of carbonate minerals that form in dead-end one-dimensional diffusion-limited <span class="hlt">zones</span> that are connected to a larger reservoir of water in equilibrium with 100 bar CO2 at 100 °C. Magnesite formed in experiments with olivine, and Mg- and Ca-bearing siderite formed in experiments with flood basalt. The spatial distribution of carbonates varied between powder packed <span class="hlt">beds</span> with different powder sizes. Packed <span class="hlt">beds</span> of basalt powder with large specific surface areas sequestered more carbon per unit basalt mass than powder with low surface area. The spatial location and extent of carbonate mineral formation can influence the overall ability of fractured basalt to sequester carbon.</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_17");'>17</a></li> <li><a href="#" onclick='return showDiv("page_18");'>18</a></li> <li class="active"><span>19</span></li> <li><a href="#" onclick='return showDiv("page_20");'>20</a></li> <li><a href="#" onclick='return showDiv("page_21");'>21</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_19 --> <div id="page_20" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_18");'>18</a></li> <li><a href="#" onclick='return showDiv("page_19");'>19</a></li> <li class="active"><span>20</span></li> <li><a href="#" onclick='return showDiv("page_21");'>21</a></li> <li><a href="#" onclick='return showDiv("page_22");'>22</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="381"> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/1994HM.....48..243A','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/1994HM.....48..243A"><span>Effects of Fucus vesiculosus covering intertidal mussel <span class="hlt">beds</span> in the Wadden Sea</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Albrecht, A.; Reise, K.</p> <p>1994-06-01</p> <p>The brown alga Fucus vesiculosus forma mytili (Nienburg) Nienhuis covered about 70% of mussel <span class="hlt">bed</span> ( Mytilus edulis) surface area in the lower intertidal <span class="hlt">zone</span> of Königshafen, a sheltered sandy bay near the island of Sylt in the North Sea. Mean biomass in dense patches was 584 g ash-free dry weight m-2 in summer. On experimental mussel <span class="hlt">beds</span>, fucoid cover enhanced mud accumulation and decreased mussel density. The position of mussels underneath algal canopy was mainly endobenthic (87% of mussels with >1/3 of shell sunk into mud). In the absence of fucoids, mussels generated epibenthic garlands (81% of mussels with <1/3 of shell buried in mud). Mussel density underneath fucoid cover was 40 to 73% of mussel density without algae. On natural <span class="hlt">beds</span>, barnacles (Balanidae), periwinkles ( Littorina littorea) and crabs (particularly juveniles of Carcinus maenas) were significantly less abundant in the presence of fucoids, presumably because most of the mussels were covered with sediment, whereas in the absence of fucoids, epibenthic mussel clumps provided substratum as well as interstitial hiding places. The endobenthic macrofauna showed little difference between covered and uncovered mussel <span class="hlt">beds</span>. On the other hand, grazing herbivores — the flat periwinkle Littorina mariae, the isopod Jaera albifrons and the amphipods Gammarus spp. — were more abundant at equivalent sites with fucoid cover. The patchy growth of Fucus vesiculosus on mussel <span class="hlt">beds</span> in the intertidal Wadden Sea affects mussels and their epibionts negatively, but supports various herbivores and increases overall benthic diversity.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/20013366','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/20013366"><span>On flow induced kinetic diffusion and rotary kiln <span class="hlt">bed</span> burden heat transport</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Boateng, A.A.</p> <p>1997-07-01</p> <p>The cross-section of a partially-filled cylindrical kiln rotating on its horizontal axis and processing granular solids produces a shear <span class="hlt">zone</span> (active layer) at the free surface which grows with the kiln's rotational rate. The active layer, although relatively thin, compared with the rest of the <span class="hlt">bed</span> burden, drives all physical/chemical reactions. This is because of the high rate of surface renewal which, in turn, promotes heat exchange between the exposed surface and the higher temperature freeboard gas. Unlike packed <span class="hlt">beds</span>, particulate diffusion induced by the flow of granules, adds a significant component to the overall heat transfer in the <span class="hlt">bed</span>. Problem formulation and modeling of heat conduction using flow fields derived from experiments suggest that at slow kiln speeds the diffusion effect may not be recognized due to long term duration of particle contacts and hence packed-<span class="hlt">bed</span> heat conduction models may provide adequate characterization. However, at moderate and high kiln speeds particle collisions are short-termed and kinetic diffusion contributes to the effective thermal conductivity by as much as tenfold thereby resulting in a well-mixed conditions and a homogeneous <span class="hlt">bed</span> temperature. Industrial processing ramifications such as kiln speed control and product quality are discussed hereafter.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/6326512','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/6326512"><span>Experimental study of the stability of oscillatory-flow <span class="hlt">bed</span> phases</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Lambie, J.M.; Southard, J.B.</p> <p>1985-01-01</p> <p>Ripples generated by symmerical oscillatory flow in a closed duct were studied over a wide range of oscillation periods T and maximum orbital velocities U/sub m/. The characterizing variables of the flow were grouped into three (3) dimensionless parameters and graphed in a three-dimensional space that reveals the range of flow conditions necessary for a particular <span class="hlt">bed</span> phase. Hot water was used to achieve a Reynolds-Froude scale modeling that increased the effective size of the duct by a factor of about two (2), to almost 12 m long, 0.25 m wide, and 0.60 m deep. Seven <span class="hlt">bed</span> phases were observed: no movement, rolling-grain ripples, 2-D vortex ripples, 3-D vortex ripples, reversing-crest ripples, and planar <span class="hlt">bed</span>. The results define the hydraulic conditions for which the various <span class="hlt">bed</span> phases are stable. Rolling-grain ripples are a transitory <span class="hlt">bed</span> form for most flow conditions but have a distinct stability field at small U/sub m/ and T in fine sand. 2D vortex ripples, the most common <span class="hlt">bed</span> form in the range of natural flow conditions, develop in flow with moderate U/sub m/ and small to large T. 3D vortex ripples develop at relatively larger U/sub m/ and lower T and are stable up to upper-planar-<span class="hlt">bed</span> conditions; the transition from 2D to 3D vortex ripples lies in a broad <span class="hlt">zone</span> of U/sub m/ and T conditions. Reversing-crest ripples are formed by higher-energy flows than vortex ripples; T appears to be the dominant parameter in the formation with a lower boundary values of approximately 7 seconds.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2012SPIE.8524E..1FN','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2012SPIE.8524E..1FN"><span>Mapping Sargassum <span class="hlt">beds</span> off, ChonBuri Province, Thailand, using ALOS AVNI2 image</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Noiraksar, Thidarat; Komatsu, Teruhisa; Sawayama, Shuhei; Phauk, Sophany; Hayashizaki, Ken-ichi</p> <p>2012-10-01</p> <p>Sargassum species grow on rocks and dead corals and form dense seaweed <span class="hlt">beds</span>. Sargassum <span class="hlt">beds</span> play ecological roles such as CO2 uptake and O2 production through photosynthesis, spawning and nursery grounds of fish, feeding ground for sea urchins and abalones, and substrates for attached animals and plants on leaves and holdfasts. However, increasing human impacts and climate change decrease or degrade Sargassum <span class="hlt">beds</span> in ASEAN countries. It is necessary to grasp present spatial distributions of this habitat. Thailand, especially its coastal <span class="hlt">zone</span> along the Gulf of Thailand, is facing degradation of Sargassum <span class="hlt">beds</span> due to increase in industries and population. JAXA launched non-commercial satellite, ALOS, providing multiband images with ultra-high spatial resolution optical sensors (10 m), AVNIR2. Unfortunately, ALOS has terminated its mission in April 2011. However, JAXA has archived ALOS AVNIR2 images over the world. They are still useful for mapping coastal ecosystems. We examined capability of remote sensing with ALOS AVNIR2 to map Sargassum <span class="hlt">beds</span> in waters off Sattahip protected area as a natural park in Chon Buri Province, Thailand, threatened by degradation of water quality due to above-mentioned impacts. Ground truth data were obtained in February 2012 by using continual pictures taken by manta tow. Supervised classification could detect Sargassum <span class="hlt">beds</span> off Sattahip at about 70% user accuracy. It is estimated that error is caused by mixel effect of bottom substrates in a pixel with 10 x 10 m. Our results indicate that ALOS AVNIR2 images are useful for mapping Sargassum <span class="hlt">beds</span> in Southeast Asia.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2010pot..book..481S','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2010pot..book..481S"><span>Integrated Use of Fluidized <span class="hlt">Bed</span> Technology for Oil Production from Oil Shale</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Siirde, Andres; Martins, Ants</p> <p></p> <p>The plant unit which consists of a fluidized <span class="hlt">bed</span> retort and CFB furnace for burning the by-products of retorting (semicoke and semicoke gas) is presented in this paper. The oil shale retort consists of a fast fluidized <span class="hlt">bed</span> shaft, coarse semicoke bit, semicoke separation chamber and cyclone for the separation of fine semicoke particles. The crashed oil shale and hot ash from the CFB ash separator are fed concurrently into the fast fluidized <span class="hlt">bed</span> shaft. For fluidizing the mixture of oil shale and hot ash particles, the recycle semicoke gas is used. The pyrolysis of oil shale begins in fluidized <span class="hlt">bed</span> and is completed in the semicoke separation chamber. The coarse semicoke particles are separated from fluidized <span class="hlt">bed</span> directly while the medium size particles are separated from the gases in the semicoke separation chamber and the finest semicoke particles in the cyclone. All the fractions of semicoke from the fluidized <span class="hlt">bed</span> retort and semicoke gas from the oil fractionator are burnt in the CFB furnace. The semicoke ash is separated from flue gases in the CFB ash separator. A part of separated hot ash is fed into the fluidized <span class="hlt">bed</span> retort as a solid heat carrier material and the rest into the furnace through the ash cooler or separated from the process. The retention of sulphur dioxide formed during the semicoke and semicoke gas combustion, is guaranteed for about 99 % due to the high CaO content in the semicoke ash and convenient temperature (about 850°C) in the CFB furnace. The described plant unit is useful for retorting oil shale and other solid hydrocarbon-containing fuels. The advantages of the present retorting process and system are: improved oil yield, greater throughput, lower retorting time, avoidance of moving parts in the retorting <span class="hlt">zones</span>, reduced downtime, etc. A new plant unit for oil shale oil production has been elaborated and defended by the Estonian Utility Model EE 200700671 UI.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2013AIPC.1542.1043W','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2013AIPC.1542.1043W"><span>Free running droplets on packed powder <span class="hlt">beds</span></span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Whitby, Catherine P.; Bian, Xun; Sedev, Rossen</p> <p>2013-06-01</p> <p>We observed that water drops placed on horizontal <span class="hlt">beds</span> of fine molybdenite particles move freely over the <span class="hlt">bed</span> surface for about 1 second. The drops collect an irregular coating of unevenly distributed particles as they bounce and roll. We manipulated the distance that the drops travel, and hence the area of the droplet surface coated with particles, by varying the water surface tension and the kinetic energy of the initial droplet impact on the <span class="hlt">bed</span> surface. Our results highlight the role of contact angle hysteresis in particle encapsulation of liquid drops.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/5758351','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/5758351"><span>Investigation of fluidized-<span class="hlt">bed</span> biological denitrification</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Acox, T.A.</p> <p>1982-12-16</p> <p>The performance of the fluidized-<span class="hlt">bed</span> bioreactor was modelled for denitrification using a multiple linear regression. Reasonable accuracy was obtained; however, this type of analysis did not take into account the hydraulic characteristics of the fluidized-<span class="hlt">bed</span>. The Mulcahy and LaMotta computer program previously used to model a fluidized-<span class="hlt">bed</span> bioreactor cannot be used in this case due to the Michaelis-Menton constant k determined in this study, which was one to two orders of magnitude lower. With some additional bioreactor study and computer program modification, this may prove to be of some benefit.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/25591490','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/25591490"><span><span class="hlt">Bed</span> bug outbreak in a neonatal unit.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Bandyopadhyay, T; Kumar, A; Saili, A</p> <p>2015-10-01</p> <p>There has been a worldwide increase in <span class="hlt">bed</span> bug infestations over the last 10-15 years. A major stigma is placed upon the institutions found to be infested. We report our experience with an outbreak of the tropical <span class="hlt">bed</span> bug, Cimex hemipterus, in a neonatal unit. The outbreak not only affected the admitted newborns and mothers by causing a wide variety of rashes and inducing sleeplessness, but also impinged upon the health professionals and their families by producing similar symptomology. It is important for healthcare providers to be aware of, and for each healthcare facility to have, <span class="hlt">bed</span> bug prevention and control policies.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://ntrs.nasa.gov/search.jsp?R=19890059768&hterms=marx&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D40%26Ntt%3Dmarx','NASA-TRS'); return false;" href="https://ntrs.nasa.gov/search.jsp?R=19890059768&hterms=marx&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D40%26Ntt%3Dmarx"><span>NASA/MSFC nozzle test <span class="hlt">bed</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Crose, James G.; Mack, Thomas E.; Marx, Douglas A.; Goldberg, Benjamin; Shrader, John E.</p> <p>1989-01-01</p> <p>As part of an effort to improve the state-of-the-art in nozzle technology, a solid propulsion test <span class="hlt">bed</span> facility is being designed and will be located at Marshall Space Flight Center. The test <span class="hlt">bed</span> will consist of a plasma arc facility and several small scale rocket motor test facilities ranging in size from the ballistic environmental generator motor with a 1/2 in. diameter throat to the MNASA motor with a 9 and 1/2 in. diameter throat capability. The test <span class="hlt">bed</span> system will be used primarily to study materials behavior from the standpoint of char, erosion, and thermal stress phenomena.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2017JGRF..122..528G','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2017JGRF..122..528G"><span>Passive acoustic monitoring of <span class="hlt">bed</span> load discharge in a large gravel <span class="hlt">bed</span> river</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Geay, T.; Belleudy, P.; Gervaise, C.; Habersack, H.; Aigner, J.; Kreisler, A.; Seitz, H.; Laronne, J. B.</p> <p>2017-02-01</p> <p>Surrogate technologies to monitor <span class="hlt">bed</span> load discharge have been developed to supplement and ultimately take over traditional direct methods. Our research deals with passive acoustic monitoring of <span class="hlt">bed</span> load flux using a hydrophone continuously deployed near a river <span class="hlt">bed</span>. This passive acoustic technology senses any acoustic waves propagated in the river environment and particularly the sound due to interparticle collisions emitted during <span class="hlt">bed</span> load movement. A data set has been acquired in the large Alpine gravel-<span class="hlt">bedded</span> Drau River. Analysis of the short-term frequency response of acoustic signals allows us to determine the origin of recorded noises and to consider their frequency variations. Results are compared with ancillary field data of water depth and <span class="hlt">bed</span> load transport inferred from the signals of a geophone array. Hydrophone and geophone signals are well correlated. Thanks to the large network of deployed geophones, analysis of the spatial resolution of hydrophone measurements shows that the sensor is sensitive to <span class="hlt">bed</span> load motion not only locally but over distances of 5-10 m (10-20% of river width). Our results are promising in terms of the potential use of hydrophones for monitoring <span class="hlt">bed</span> load transport in large gravel <span class="hlt">bed</span> rivers: acoustic signals represent a large river <span class="hlt">bed</span> area, rather than being local; hydrophones can be installed in large floods; they can be deployed at a low cost and provide continuous monitoring at high temporal resolution.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/1010507','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/1010507"><span>A PROTOTYPE FOUR INCH SHORT HYDRIDE (FISH) <span class="hlt">BED</span> AS A REPLACEMENT TRITIUM STORAGE <span class="hlt">BED</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Klein, J.; Estochen, E.; Shanahan, K.; Heung, L.</p> <p>2011-02-23</p> <p>The Savannah River Site (SRS) tritium facilities have used 1st generation (Gen1) metal hydride storage <span class="hlt">bed</span> assemblies with process vessels (PVs) fabricated from 3 inch nominal pipe size (NPS) pipe to hold up to 12.6 kg of LaNi{sub 4.25}Al{sub 0.75} metal hydride for tritium gas absorption, storage, and desorption for over 15 years. The 2nd generation (Gen2) of the <span class="hlt">bed</span> design used the same NPS for the PV, but the added internal components produced a <span class="hlt">bed</span> nominally 1.2 m long, and presented a significant challenge for heater cartridge replacement in a footprint limited glove-box. A prototype 3rd generation (Gen3) metal hydride storage <span class="hlt">bed</span> has been designed and fabricated as a replacement candidate for the Gen2 storage <span class="hlt">bed</span>. The prototype Gen3 <span class="hlt">bed</span> uses a PV pipe diameter of 4 inch NPS so the <span class="hlt">bed</span> length can be reduced below 0.7 m to facilitate heater cartridge replacement. For the Gen3 prototype <span class="hlt">bed</span>, modeling results show increased absorption rates when using hydrides with lower absorption pressures. To improve absorption performance compared to the Gen2 <span class="hlt">beds</span>, a LaNi{sub 4.15}Al{sub 0.85} material was procured and processed to obtain the desired pressure-composition-temperature (PCT) properties. Other <span class="hlt">bed</span> design improvements are also presented.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/834248','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/834248"><span>In-<span class="hlt">Bed</span> Accountability Development for a Passively Cooled, Electrically Heated Hydride (PACE) <span class="hlt">Bed</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>KLEIN, JAMES</p> <p>2004-10-12</p> <p>A nominal 1500 STP-L PAssively Cooled, Electrically heated hydride (PACE) <span class="hlt">Bed</span> has been developed for implementation into a new Savannah River Site tritium project. The 1.2 meter (four-foot) long process vessel contains an internal ''U-tube'' for tritium In-<span class="hlt">Bed</span> Accountability (IBA) measurements. IBA will be performed on six, 12.6 kg production metal hydride storage <span class="hlt">beds</span>. IBA tests were done on a prototype <span class="hlt">bed</span> using electric heaters to simulate the radiolytic decay of tritium. Tests had gas flows from 10 to 100 SLPM through the U-tube or 100 SLPM through the <span class="hlt">bed</span>'s vacuum jacket. IBA inventory measurement errors at the 95 percent confidence level were calculated using the correlation of IBA gas temperature rise, or (hydride) <span class="hlt">bed</span> temperature rise above ambient temperature, versus simulated tritium inventory. Prototype <span class="hlt">bed</span> IBA inventory errors at 100 SLPM were the largest for gas flows through the vacuum jacket: 15.2 grams for the <span class="hlt">bed</span> temperature rise and 11.5 grams for the gas temperature rise. For a 100 SLPM U-tube flow, the inventory error was 2.5 grams using <span class="hlt">bed</span> temperature rise and 1.6 grams using gas temperature rise. For 50 to 100 SLPM U-tube flows, the IBA gas temperature rise inventory errors were nominally one to two grams that increased above four grams for flows less than 50 SLPM. For 50 to 100 SLPM U-tube flows, the IBA <span class="hlt">bed</span> temperature rise inventory errors were greater than the gas temperature rise errors, but similar errors were found for both methods at gas flows of 20, 30, and 40 SLPM. Electric heater IBA tests were done for six production hydride <span class="hlt">beds</span> using a 45 SLPM U-tube gas flow. Of the duplicate runs performed on these <span class="hlt">beds</span>, five of the six <span class="hlt">beds</span> produced IBA inventory errors of approximately three grams: consistent with results obtained in the laboratory prototype tests.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/20854179','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/20854179"><span>In-<span class="hlt">Bed</span> Accountability Development for a Passively Cooled, Electrically Heated Hydride (PACE) <span class="hlt">Bed</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Klein, J.E.</p> <p>2005-07-15</p> <p>A nominal 1500 STP-L PAssively Cooled, Electrically heated hydride (PACE) <span class="hlt">Bed</span> has been developed for implementation into a new Savannah River Site tritium project. The 1.2 meter (four-foot) long process vessel contains on internal 'U-tube' for tritium In-<span class="hlt">Bed</span> Accountability (IBA) measurements. IBA will be performed on six, 12.6 kg production metal hydride storage <span class="hlt">beds</span>.IBA tests were done on a prototype <span class="hlt">bed</span> using electric heaters to simulate the radiolytic decay of tritium. Tests had gas flows from 10 to 100 SLPM through the U-tube or 100 SLPM through the <span class="hlt">bed</span>'s vacuum jacket. IBA inventory measurement errors at the 95% confidence level were calculated using the correlation of IBA gas temperature rise, or (hydride) <span class="hlt">bed</span> temperature rise above ambient temperature, versus simulated tritium inventory.Prototype <span class="hlt">bed</span> IBA inventory errors at 100 SLPM were the largest for gas flows through the vacuum jacket: 15.2 grams for the <span class="hlt">bed</span> temperature rise and 11.5 grams for the gas temperature rise. For a 100 SLPM U-tube flow, the inventory error was 2.5 grams using <span class="hlt">bed</span> temperature rise and 1.6 grams using gas temperature rise. For 50 to 100 SLPM U-tube flows, the IBA gas temperature rise inventory errors were nominally one to two grams that increased above four grams for flows less than 50 SLPM. For 50 to 100 SLPM U-tube flows, the IBA <span class="hlt">bed</span> temperature rise inventory errors were greater than the gas temperature rise errors, but similar errors were found for both methods at gas flows of 20, 30, and 40 SLPM.Electric heater IBA tests were done for six production hydride <span class="hlt">beds</span> using a 45 SLPM U-tube gas flow. Of the duplicate runs performed on these <span class="hlt">beds</span>, five of the six <span class="hlt">beds</span> produced IBA inventory errors of approximately three grams: consistent with results obtained in the laboratory prototype tests.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/27644139','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/27644139"><span>Paediatric burn unit in Portugal: <span class="hlt">Beds</span> needed using a <span class="hlt">bed</span>-day approach.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Santos, João V; Viana, João; Amarante, José; Freitas, Alberto</p> <p>2017-03-01</p> <p>Despite the high burden of children with burns, there is not a paediatric burn unit (PBU) in Portugal. We aimed to estimate the Portuguese health care providing needs on paediatric burns. We performed a nation-wide retrospective study, between 2009 and 2013, among less than 16 years-old inpatients with burns that met the transfer criteria to a burn unit in Portugal. A <span class="hlt">bed</span>-day approach was used, targeting an occupancy rate of 70-75%, and possible locations were studied. The primary outcome was the number of <span class="hlt">beds</span> needed, and secondary outcomes were the overload and revenue for each possible number of <span class="hlt">beds</span> in a PBU. A total of 1155 children met the transfer criteria to a burn unit, representing a total of 17,371 <span class="hlt">bed</span>-days. Occupancy rates of 11-<span class="hlt">bed</span>, 12-<span class="hlt">bed</span>, 13-<span class="hlt">bed</span> and 14-<span class="hlt">bed</span> PBU were, respectively, 79.7%, 75.3%, 71.0% and 66.8%. The 13-<span class="hlt">bed</span> PBU scenario would represent an overload of 523 <span class="hlt">bed</span>-days, revenue of more than 5 million Euros and a ratio of 1 PBU <span class="hlt">bed</span> per 123,409 children. Using a groundbreaking approach, the optimal number of PBU <span class="hlt">beds</span> needed in Portugal is 13. However, as half of the patients who met burn transfer criteria are not transferred, this <span class="hlt">bed</span> number might be overestimated if this pattern maintains, despite the underestimation with our method approach. If a PBU is to be created the preferable location is Porto. Cost-effectiveness studies should be performed. Copyright © 2016 Elsevier Ltd and ISBI. All rights reserved.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/5920630','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/5920630"><span>Anomalous <span class="hlt">zones</span> (domal)</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Kupfer, D.H. )</p> <p>1990-09-01</p> <p>Each <span class="hlt">zone</span> contains several anomalous salt properties (anomalous features). <span class="hlt">Zones</span> cannot be characterized by any single property <span class="hlt">Zones</span> are highly variable, lenticular, and discontinuous in detail; however, once established, they commonly have a predictable trend. The individual anomalous features can occur alone (locally in pairs) over areas of various sizes and shapes. These alone occurrences are not anomalous <span class="hlt">zones</span>. Anomalous <span class="hlt">zones</span> may be of any origin, and origin is not part of the definition. Typical origins include: primary (sedimentary), external sheath <span class="hlt">zone</span>, separating two spines of salt, or caused by toroidal flow. The major importance of an anomalous <span class="hlt">zone</span> is that it consists of various anomalous features distributed discontinuously along the <span class="hlt">zone</span>. Thus, if three or more anomalous properties are observed together, one should look for others. The anomalous <span class="hlt">zones</span> observed in the Gulf Coast thus far are vertical, linear, and semicontinuous. Most are reasonably straight, but some bend sharply, end abruptly, or coalesce. Textures in salt involve grain size, color (white to dark gray), grain shape, or grain distribution of the salt. Typical anomalous textures are coarse-grain, poikiloblastic, and friability. A change in color is commonplace and seldom anomalous. Structural anomalous features, broadly defined, account for most of the rest of the anomalous features. Not uncommonly they cause mining problems. Among the structural anomalous features: INCLUSIONS: Sediments, hydrocarbons, brine, gases. Common gases are air (as N{sub 2}), CH-compounds, CO{sub 2}, and H{sub 2}S. STRUCTURES: Sheared salt, undue stabbing or jointing, voids (crystal-lined pockets), permeability, increased porosity COMPOSITION: High anhydrite content, visible anhydrite as grains or boudins, very black salt = disseminated impurities such as clay.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2013ESRv..127..171B','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2013ESRv..127..171B"><span>Fault <span class="hlt">zone</span> hydrogeology</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Bense, V. F.; Gleeson, T.; Loveless, S. E.; Bour, O.; Scibek, J.</p> <p>2013-12-01</p> <p>Deformation along faults in the shallow crust (< 1 km) introduces permeability heterogeneity and anisotropy, which has an important impact on processes such as regional groundwater flow, hydrocarbon migration, and hydrothermal fluid circulation. Fault <span class="hlt">zones</span> have the capacity to be hydraulic conduits connecting shallow and deep geological environments, but simultaneously the fault cores of many faults often form effective barriers to flow. The direct evaluation of the impact of faults to fluid flow patterns remains a challenge and requires a multidisciplinary research effort of structural geologists and hydrogeologists. However, we find that these disciplines often use different methods with little interaction between them. In this review, we document the current multi-disciplinary understanding of fault <span class="hlt">zone</span> hydrogeology. We discuss surface- and subsurface observations from diverse rock types from unlithified and lithified clastic sediments through to carbonate, crystalline, and volcanic rocks. For each rock type, we evaluate geological deformation mechanisms, hydrogeologic observations and conceptual models of fault <span class="hlt">zone</span> hydrogeology. Outcrop observations indicate that fault <span class="hlt">zones</span> commonly have a permeability structure suggesting they should act as complex conduit-barrier systems in which along-fault flow is encouraged and across-fault flow is impeded. Hydrogeological observations of fault <span class="hlt">zones</span> reported in the literature show a broad qualitative agreement with outcrop-based conceptual models of fault <span class="hlt">zone</span> hydrogeology. Nevertheless, the specific impact of a particular fault permeability structure on fault <span class="hlt">zone</span> hydrogeology can only be assessed when the hydrogeological context of the fault <span class="hlt">zone</span> is considered and not from outcrop observations alone. To gain a more integrated, comprehensive understanding of fault <span class="hlt">zone</span> hydrogeology, we foresee numerous synergistic opportunities and challenges for the discipline of structural geology and hydrogeology to co-evolve and</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/26436260','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/26436260"><span>Transport of through a Thick Vadose <span class="hlt">Zone</span>.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Arnaud, Emmanuelle; Best, Anna; Parker, Beth L; Aravena, Ramon; Dunfield, Kari</p> <p>2015-09-01</p> <p>Livestock manure applications on fields can be a source of contamination in water resources, including groundwater. Although fecal indicators like have often been detected in tile drainage systems, few studies have monitored groundwater at depth after manure treatments, especially at sites with a deep, heterogeneous vadose <span class="hlt">zone</span>. Our hypothesis was that microbial transport through a thick vadose <span class="hlt">zone</span> would be limited or nonexistent due to attenuation processes, subsurface thickness, and heterogeneity. This study tested this hypothesis by monitoring concentrations beneath a 12-m-thick vadose <span class="hlt">zone</span> of coarse, heterogeneous glacial sediments after surface application of liquid swine manure. was detected on all 23 sample dates over the 5-mo period (4 Apr. 2012-13 Aug. 2012), with particularly elevated concentrations 1 wk after application and lasting for 5 wk. Variable low-level concentrations before and after the elevated period suggest remobilization and delayed transport of microorganisms to the water table without additional loadings within the flow field. These findings suggest preferential flow pathways allowing deep infiltration of manure bacteria as well as a continued source of bacteria, with variable retention and travel times, over several months. Preferential flow pathways at this site include soil macropores, depression focused infiltration, and pathways related to subsurface heterogeneity and/or fracture flow through finer-grained diamict <span class="hlt">beds</span>. Further research is needed to confirm the relative contribution of sources, constrain travel times, and define specific transport pathways.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/26467615','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/26467615"><span><span class="hlt">Bed</span> Bug Infestations and Control Practices in China: Implications for Fighting the Global <span class="hlt">Bed</span> Bug Resurgence.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Wang, Changlu; Wen, Xiujun</p> <p>2011-04-11</p> <p>The <span class="hlt">bed</span> bug resurgence in North America, Europe, and Australia has elicited interest in investigating the causes of the widespread and increasing infestations and in developing more effective control strategies. In order to extend global perspectives on <span class="hlt">bed</span> bug management, we reviewed <span class="hlt">bed</span> bug literature in China by searching five Chinese language electronic databases. We conducted telephone interviews of staff from 77 Health and Epidemic Prevention Stations in six Chinese cities in November 2010. We also conducted telephone interviews of 68 pest control firms in two cities during March 2011. Two species of <span class="hlt">bed</span> bugs (Cimex lectularius L. and Cimex hemipterus (F.)) are known to occur in China. These were common urban pests before the early1980s. Nationwide "Four-Pest Elimination" campaigns (<span class="hlt">bed</span> bugs being one of the targeted pests) were implemented in China from 1960 to the early 1980s. These campaigns succeeded in the elimination of <span class="hlt">bed</span> bug infestations in most communities. Commonly used <span class="hlt">bed</span> bug control methods included applications of hot water, sealing of <span class="hlt">bed</span> bug harborages, physical removal, and applications of residual insecticides (mainly organophosphate sprays or dusts). Although international and domestic travel has increased rapidly in China over the past decade (2000-2010), there have only been sporadic new infestations reported in recent years. During 1999-2009, all documented <span class="hlt">bed</span> bug infestations were found in group living facilities (military dormitories, worker dormitories, and prisons), hotels, or trains. One city (Shenzhen city near Hong Kong) experienced significantly higher number of <span class="hlt">bed</span> bug infestations. This city is characterized by a high concentration of migratory factory workers. Current <span class="hlt">bed</span> bug control practices include educating residents, washing, reducing clutter, putting items under the hot sun in summer, and applying insecticides (pyrethroids or organophosphates). There have not been any studies or reports on <span class="hlt">bed</span> bug insecticide</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=4553451','PMC'); return false;" href="https://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=4553451"><span><span class="hlt">Bed</span> Bug Infestations and Control Practices in China: Implications for Fighting the Global <span class="hlt">Bed</span> Bug Resurgence</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pmc">PubMed Central</a></p> <p>Wang, Changlu; Wen, Xiujun</p> <p>2011-01-01</p> <p>The <span class="hlt">bed</span> bug resurgence in North America, Europe, and Australia has elicited interest in investigating the causes of the widespread and increasing infestations and in developing more effective control strategies. In order to extend global perspectives on <span class="hlt">bed</span> bug management, we reviewed <span class="hlt">bed</span> bug literature in China by searching five Chinese language electronic databases. We conducted telephone interviews of staff from 77 Health and Epidemic Prevention Stations in six Chinese cities in November 2010. We also conducted telephone interviews of 68 pest control firms in two cities during March 2011. Two species of <span class="hlt">bed</span> bugs (Cimex lectularius L. and Cimex hemipterus (F.)) are known to occur in China. These were common urban pests before the early1980s. Nationwide “Four-Pest Elimination” campaigns (<span class="hlt">bed</span> bugs being one of the targeted pests) were implemented in China from 1960 to the early 1980s. These campaigns succeeded in the elimination of <span class="hlt">bed</span> bug infestations in most communities. Commonly used <span class="hlt">bed</span> bug control methods included applications of hot water, sealing of <span class="hlt">bed</span> bug harborages, physical removal, and applications of residual insecticides (mainly organophosphate sprays or dusts). Although international and domestic travel has increased rapidly in China over the past decade (2000–2010), there have only been sporadic new infestations reported in recent years. During 1999–2009, all documented <span class="hlt">bed</span> bug infestations were found in group living facilities (military dormitories, worker dormitories, and prisons), hotels, or trains. One city (Shenzhen city near Hong Kong) experienced significantly higher number of <span class="hlt">bed</span> bug infestations. This city is characterized by a high concentration of migratory factory workers. Current <span class="hlt">bed</span> bug control practices include educating residents, washing, reducing clutter, putting items under the hot sun in summer, and applying insecticides (pyrethroids or organophosphates). There have not been any studies or reports on <span class="hlt">bed</span> bug insecticide</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.epa.gov/bedbugs/do-it-yourself-bed-bug-control','PESTICIDES'); return false;" href="https://www.epa.gov/bedbugs/do-it-yourself-bed-bug-control"><span>Do-it-yourself <span class="hlt">Bed</span> Bug Control</span></a></p> <p><a target="_blank" href="http://www.epa.gov/pesticides/search.htm">EPA Pesticide Factsheets</a></p> <p></p> <p></p> <p>Controlling <span class="hlt">bed</span> bugs is complex. Using an integrated pest management (IPM) approach incorporates both non-chemical and pesticide methods. Success depends on the extent of the infestation, clutter on site, and resident participation.</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_18");'>18</a></li> <li><a href="#" onclick='return showDiv("page_19");'>19</a></li> <li class="active"><span>20</span></li> <li><a href="#" onclick='return showDiv("page_21");'>21</a></li> <li><a href="#" onclick='return showDiv("page_22");'>22</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_20 --> <div id="page_21" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_19");'>19</a></li> <li><a href="#" onclick='return showDiv("page_20");'>20</a></li> <li class="active"><span>21</span></li> <li><a href="#" onclick='return showDiv("page_22");'>22</a></li> <li><a href="#" onclick='return showDiv("page_23");'>23</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="401"> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.epa.gov/bedbugs/bed-bug-clearinghouse-publications-other-languages','PESTICIDES'); return false;" href="https://www.epa.gov/bedbugs/bed-bug-clearinghouse-publications-other-languages"><span><span class="hlt">Bed</span> Bug Clearinghouse Publications in Other Languages</span></a></p> <p><a target="_blank" href="http://www.epa.gov/pesticides/search.htm">EPA Pesticide Factsheets</a></p> <p></p> <p></p> <p>This information is intended to help states, communities, and consumers prevent and control <span class="hlt">bed</span> bug infestations. These outreach materials are available in Spanish, Chinese, and French; and include action plans based on an IPM approach.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.epa.gov/bedbugs/bed-bug-clearinghouse-type-resource','PESTICIDES'); return false;" href="https://www.epa.gov/bedbugs/bed-bug-clearinghouse-type-resource"><span><span class="hlt">Bed</span> Bug Clearinghouse by Type of Resource</span></a></p> <p><a target="_blank" href="http://www.epa.gov/pesticides/search.htm">EPA Pesticide Factsheets</a></p> <p></p> <p></p> <p>This information is to help states, communities, and consumers prevent and control <span class="hlt">bed</span> bug infestations. These brochures, fact sheets, manuals, posters, checklists, videos, and more provide guidance such as hotel room inspection and pesticide safety.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/9531881','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/9531881"><span>Is <span class="hlt">bed</span> rest following embryo transfer necessary?</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Sharif, K; Afnan, M; Lashen, H; Elgendy, M; Morgan, C; Sinclair, L</p> <p>1998-03-01</p> <p>To evaluate the effect of no <span class="hlt">bed</span> rest following ET on the results of an IVF program. Historical cohort-control study. A University-based assisted conception unit. One thousand and nineteen (1019) IVF cycles were performed at our unit from June 1994 to August 1996. The historical control consisted of all the 19,697 IVF cycles reported in the United Kingdom national database from April 1994 to March 1995. No <span class="hlt">bed</span> rest following ET in our patients. Pregnancy rate (PR) and clinical PR per cycles started and per ET procedure. The clinical PR per ET was significantly higher in our patients than in the national data (30% versus 22.9%), as was the clinical PR per cycle (23.5% versus 18.6%). The implantation rate in our patients was 17.2%. The favorable PR in our patients despite no <span class="hlt">bed</span> rest following ET suggests the <span class="hlt">bed</span> rest is not necessary.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.epa.gov/bedbugs/bed-bugs-are-public-health-pests','PESTICIDES'); return false;" href="https://www.epa.gov/bedbugs/bed-bugs-are-public-health-pests"><span><span class="hlt">Bed</span> Bugs are Public Health Pests</span></a></p> <p><a target="_blank" href="http://www.epa.gov/pesticides/search.htm">EPA Pesticide Factsheets</a></p> <p></p> <p></p> <p>EPA and the Centers for Disease Control and Prevention (CDC) issued a joint statement on the public health impacts of <span class="hlt">bed</span> bugs, which are blood-sucking ectoparasites (external parasites). EPA also has a pesticide registration notice on this topic.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://medlineplus.gov/news/fullstory_166425.html','NIH-MEDLINEPLUS'); return false;" href="https://medlineplus.gov/news/fullstory_166425.html"><span><span class="hlt">Bed</span> Partner Often Fuels Loved One's Insomnia</span></a></p> <p><a target="_blank" href="http://medlineplus.gov/">MedlinePlus</a></p> <p></p> <p></p> <p>... had insomnia, the partner's suggested solutions -- including watching TV or going to <span class="hlt">bed</span> earlier -- often backfired. "It ... activities other than sleep, such as reading or TV-viewing. And more than one-third said they ...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/183067','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/183067"><span>Drying of solids in fluidized <span class="hlt">beds</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Kannan, C.S.; Thomas, P.P.; Varma, Y.B.G.</p> <p>1995-09-01</p> <p>Fluidized <span class="hlt">bed</span> drying is advantageously adopted in industrial practice for drying of granular solids such as grains, fertilizers, chemicals, and minerals either for long shelf life or to facilitate further processing or handling. Solids are dried in batch and in continuous fluidized <span class="hlt">beds</span> corresponding to cross-flow and countercurrent flow of phases covering a wide range in drying conditions. Materials that essentially dry with constant drying rate and then give a falling drying rate approximately linear with respect to solids moisture content (sand) as well as those with an extensive falling rate period with the subsequent falling rate being a curve with respect to the moisture content (mustard, ragi, poppy seeds) are chosen for the study. The performance of the continuous fluidized <span class="hlt">bed</span> driers is compared with that of batch fluidized <span class="hlt">bed</span> driers; the performance is predicted using batch kinetics, the residence time distribution of solids, and the contact efficiency between the phases.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/5077400','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/5077400"><span>Unique slider <span class="hlt">bed</span> eliminates problematic idler rollers</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Not Available</p> <p>1988-01-01</p> <p>Solidur Plastic's impact slide <span class="hlt">bed</span> is an innovative solution to problems with idler rollers. The unit provides increased conveyor efficiency and prolonged belt life. It also reduces costly downtime and maintenance needs by eliminating typical idler and conveyor belting problems.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/5732475','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/5732475"><span>D7 debris-<span class="hlt">bed</span> experiment. [LMFBR</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Mitchell, G W; Ottinger, C A; Lipinski, R J</p> <p>1983-08-01</p> <p>The D7 experiment investigated heat removal from a shallow, stratified <span class="hlt">bed</span> of UO/sub 2/ particulate in sodium. The particle diameters ranged from 0.1 to 1.0 mm, with the largest particles at the bottom. The <span class="hlt">bed</span> thickness was 74 mm and the average porosity was 41%. The incipient dryout power varied from 0.43 W/g to 0.25 W/g as the sodium subcooling (saturation temperature minus overlying pool temperature) was reduced from 390/sup 0/C to 170/sup 0/C. These powers were only slighlty above the incipient boiling powers. Such low dryout powers are believed due to the interaction of capillary force with <span class="hlt">bed</span> stratification. With a subccoling of 130/sup 0/C several sudden decreases in the saturation temperature occurred. These are believed due to channel formation, which causes a reduction in the capillary pressure in the <span class="hlt">bed</span>.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/50756','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/50756"><span>Development of fluidized <span class="hlt">bed</span> cement sintering technology</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Mukai, Katsuji</p> <p>1994-12-31</p> <p>In the new system presented in this paper, the cement clinker is sintered, not in a rotary kiln, but in two different furnaces: a spouted <span class="hlt">bed</span> kiln and a fluidized <span class="hlt">bed</span> kiln. The heat generated in the process of cooling the cement clinker is recovered by a fluidized <span class="hlt">bed</span> cooler and a packed <span class="hlt">bed</span> cooler, which are more efficient than the conventional coolers. Compared with the rotary kiln system, the new technology significantly reduces NO{sub x} emissions, appreciably cuts energy consumption, and reduces CO{sub 2} emissions as well. Thus, the new system is an efficient cement sintering system that is friendly to the global environment. In this paper, we describe this new technology as one of the applied technologies at an industrial level that is being developed in the Clean Coal Technology Project, and we present the results from test operations at our pilot plant.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/9653280','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/9653280"><span>The tendering process for <span class="hlt">beds</span> and mattresses.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Ballard, K; Baxter, H</p> <p>1998-04-01</p> <p>As increasing numbers of expensive, sophisticated <span class="hlt">bed</span> and mattress systems become available, more trusts are negotiating contracts for supply, maintenance and training. It is important that tissue viability nurses become involved in such decision-making.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://images.nasa.gov/#/details-PIA19069.html','SCIGOVIMAGE-NASA'); return false;" href="https://images.nasa.gov/#/details-PIA19069.html"><span><span class="hlt">Bedding</span> Pattern Interpreted as Martian Delta Deposition</span></a></p> <p><a target="_blank" href="https://images.nasa.gov/">NASA Image and Video Library</a></p> <p></p> <p>2014-12-08</p> <p>On March 25, 2014, view from the Mastcam on NASA Curiosity Mars rover looks southward at the Kimberley waypoint. Multiple sandstone <span class="hlt">beds</span> show systematic inclination to the south suggesting progressive build-out of delta sediments.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/1990vstn.nasa..107L','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/1990vstn.nasa..107L"><span>Ultra high temperature particle <span class="hlt">bed</span> reactor design</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Lazareth, Otto; Ludewig, Hans; Perkins, K.; Powell, J.</p> <p>1990-04-01</p> <p>A direct nuclear propulsion engine which could be used for a mission to Mars is designed. The main features of this reactor design are high values for I(sub sp) and very efficient cooling. This particle <span class="hlt">bed</span> reactor consists of 37 cylindrical fuel elements embedded in a cylinder of beryllium which acts as a moderator and reflector. The fuel consists of a packed <span class="hlt">bed</span> of spherical fissionable fuel particles. Gaseous H2 passes over the fuel <span class="hlt">bed</span>, removes the heat, and is exhausted out of the rocket. The design was found to be neutronically critical and to have tolerable heating rates. Therefore, this particle <span class="hlt">bed</span> reactor design is suitable as a propulsion unit for this mission.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/12515442','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/12515442"><span>Triadic <span class="hlt">bed</span>-sharing and infant temperature.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Ball, H L</p> <p>2002-09-01</p> <p>The effects on infants of sleeping with their parents is currently the subject of much debate. One concern regarding infants who sleep in their parents' <span class="hlt">bed</span> involves the possibility of overheating. Previous research reported a significantly greater core temperature of 0.1 degrees C among a cohort of <span class="hlt">bed</span>-sharing infants compared with a matched cohort of infants sleeping alone. This paper presents a preliminary analysis of the overnight rectal temperature of 12 of the 20 infants who were monitored sleeping alone and with their parents on separate nights at the University of Durham Parent-Infant Sleep Lab. No significant differences were found in all night rectal temperature, or temperature from 2 h after sleep onset between <span class="hlt">bed</span>-sharing and cot sleeping nights. These preliminary analyses suggest a night-time difference in rectal temperature between routine <span class="hlt">bed</span>-sharers and routine cot sleepers, however, these findings will be further explored in the full analyses for this study.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/5260480','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/5260480"><span>Design of fluidized-<span class="hlt">bed</span> fermentors</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Andrews, G.F.; Przezdziecki, J.</p> <p>1986-06-01</p> <p>Designing a fluidized-<span class="hlt">bed</span> bioreactor requires choosing the best support particle (if any). Effectiveness factors (proportional to reactor volumetric productivity) are derived for flocs, solid spherical supports, porous supports, and adsorbent supports. The derivation demonstrates a mathematical procedure for reducing the diffusion/uptake equations for many components (substrates and inhibitory products) to a single equation, and for identifying the limiting component. With solid supports there exists a film thickness that maximizes the effectiveness, and the design objective is to keep the film near this optimum throughout the <span class="hlt">bed</span>. This involves consideration of the effect of support particle density and film growth on <span class="hlt">bed</span> stratification. Other considerations in packing support particles are obtaining reasonable values for <span class="hlt">bed</span> height and diameter, minimizing mass transfer resistance between liquid and biomass, and preventing surface shear from stripping off the biomass. 20 references.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://ntrs.nasa.gov/search.jsp?R=19930000308&hterms=exercise+benefits&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D20%26Ntt%3Dexercise%2Bbenefits','NASA-TRS'); return false;" href="https://ntrs.nasa.gov/search.jsp?R=19930000308&hterms=exercise+benefits&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D20%26Ntt%3Dexercise%2Bbenefits"><span>Effects Of Exercise During <span class="hlt">Bed</span> Rest</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Greenleaf, John E.; Bernauer, Edmund M.</p> <p>1993-01-01</p> <p>Pair of reports adds to growing body of knowledge of physical deconditioning caused by prolonged <span class="hlt">bed</span> rest and effectiveness of various exercise regimens in preserving or restoring fitness. Major objective to determine what regimens to prescribe to astronauts before flight, during prolonged weightlessness, and immediately before returning to Earth. Knowledge also benefits patients confined by illness or injury. First report discusses experiment on effects of two types of periodic, intense, short-duration exercise during <span class="hlt">bed</span> rest. Experiment also discussed in documents "Effects Of Exercise During Prolonged <span class="hlt">Bed</span> Rest" (ARC-12190), and "Isotonic And Isokinetic Exercise During <span class="hlt">Bed</span> Rest" (ARC-12180). Second report reviews knowledge acquired with view toward development of protocols for exercise regimens.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.epa.gov/air-emissions-monitoring-knowledge-base/monitoring-control-technique-electrified-filter-bed','PESTICIDES'); return false;" href="https://www.epa.gov/air-emissions-monitoring-knowledge-base/monitoring-control-technique-electrified-filter-bed"><span>Monitoring by Control Technique - Electrified Filter <span class="hlt">Bed</span></span></a></p> <p><a target="_blank" href="http://www.epa.gov/pesticides/search.htm">EPA Pesticide Factsheets</a></p> <p></p> <p></p> <p>Stationary source emissions monitoring is required to demonstrate that a source is meeting the requirements in Federal or state rules. This page is about electrified filter <span class="hlt">bed</span> control techniques used to reduce pollutant emissions.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=4649753','PMC'); return false;" href="https://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=4649753"><span>Effect of <span class="hlt">Bed</span> Characters on the Direct Synthesis of Dimethyldichlorosilane in Fluidized <span class="hlt">Bed</span> Reactor</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pmc">PubMed Central</a></p> <p>Zhang, Pan; Duan, Ji H.; Chen, Guang H.; Wang, Wei W.</p> <p>2015-01-01</p> <p>This paper presents the numerical investigation of the effects of the general <span class="hlt">bed</span> characteristics such as superficial gas velocities, <span class="hlt">bed</span> temperature, <span class="hlt">bed</span> heights and particle size, on the direct synthesis in a 3D fluidized <span class="hlt">bed</span> reactor. A 3D model for the gas flow, heat transfer, and mass transfer was coupled to the direct synthesis reaction mechanism verified in the literature. The model was verified by comparing the simulated reaction rate and dimethyldichlorosilane (M2) selectivity with the experimental data in the open literature and real production data. Computed results indicate that superficial gas velocities, <span class="hlt">bed</span> temperature, <span class="hlt">bed</span> heights, and particle size have vital effect on the reaction rates and/or M2 selectivity. PMID:25742729</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/25863324','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/25863324"><span>Improved lignin pyrolysis for phenolics production in a bubbling <span class="hlt">bed</span> reactor--Effect of <span class="hlt">bed</span> materials.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Li, Dongbing; Briens, Cedric; Berruti, Franco</p> <p>2015-01-01</p> <p>Lignin pyrolysis was studied in a bubbling fluidized <span class="hlt">bed</span> reactor equipped with a fractional condensation train, using nitrogen as the fluidization gas. The effect of different <span class="hlt">bed</span> materials (silica sand, lignin char, activated lignin char, birch bark char, and foamed glass beads) on bio-oil yield and quality was investigated for a pyrolysis temperature of 550 °C. Results how that a <span class="hlt">bed</span> of activated lignin char is preferable to the commonly used silica sand: pyrolysis of Kraft lignin with a <span class="hlt">bed</span> of activated lignin char not only provides a pure char product, but also a higher dry bio-oil yield (with a relative increase of 43%), lower pyrolytic water production, and better bio-oil quality. The bio-oil obtained from Kraft lignin pyrolysis with a <span class="hlt">bed</span> of activated lignin char has a lower average molecular weight, less tar, more phenolics, and less acidity than when sand is used as <span class="hlt">bed</span> material.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/863945','DOE-PATENT-XML'); return false;" href="http://www.osti.gov/scitech/servlets/purl/863945"><span>Fluidized <span class="hlt">bed</span> injection assembly for coal gasification</span></a></p> <p><a target="_blank" href="http://www.osti.gov/doepatents">DOEpatents</a></p> <p>Cherish, Peter; Salvador, Louis A.</p> <p>1981-01-01</p> <p>A coaxial feed system for fluidized <span class="hlt">bed</span> coal gasification processes including an inner tube for injecting particulate combustibles into a transport gas, an inner annulus about the inner tube for injecting an oxidizing gas, and an outer annulus about the inner annulus for transporting a fluidizing and cooling gas. The combustibles and oxidizing gas are discharged vertically upward directly into the combustion jet, and the fluidizing and cooling gas is discharged in a downward radial direction into the <span class="hlt">bed</span> below the combustion jet.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19820010527','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19820010527"><span>Use of glow discharge in fluidized <span class="hlt">beds</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Wydeven, T.; Wood, P. C.; Ballou, E. V.; Spitze, L. A. (Inventor)</p> <p>1981-01-01</p> <p>Static charges and agglomerization of particles in a fluidized <span class="hlt">bed</span> systems are minimized by maintaining in at least part of the <span class="hlt">bed</span> a radio frequency glow discharge. This approach is eminently suitable for processes in which the conventional charge removing agents, i.e., moisture or conductive particle coatings, cannot be used. The technique is applied here to the disproportionation of calcium peroxide diperoxyhydrate to yield calcium superoxide, an exceptionally water and heat sensitive reaction.</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_19");'>19</a></li> <li><a href="#" onclick='return showDiv("page_20");'>20</a></li> <li class="active"><span>21</span></li> <li><a href="#" onclick='return showDiv("page_22");'>22</a></li> <li><a href="#" onclick='return showDiv("page_23");'>23</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_21 --> <div id="page_22" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_20");'>20</a></li> <li><a href="#" onclick='return showDiv("page_21");'>21</a></li> <li class="active"><span>22</span></li> <li><a href="#" onclick='return showDiv("page_23");'>23</a></li> <li><a href="#" onclick='return showDiv("page_24");'>24</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="421"> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2014WRR....50.6557G','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2014WRR....50.6557G"><span><span class="hlt">Bed</span> load fluctuations in a steep channel</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Ghilardi, Tamara; Franca, Mário J.; Schleiss, Anton J.</p> <p>2014-08-01</p> <p><span class="hlt">Bed</span> load transport rate fluctuations have been observed over time in steep rivers and flumes with wide grain size distributions even under constant sediment feeding and water discharge. The observed <span class="hlt">bed</span> load transport rate pulses are periodic and a consequence of grain sorting. Moreover, the presence of large, relatively immobile boulders, such as erratic stones, which are often present in mountain streams, has an impact on flow conditions. The detailed analysis of a 13 h laboratory experiment is presented in this paper. Boulders were randomly placed in a flume with a steep slope (6.7%), and water and sediment were constantly supplied to the flume. Along with the sediment transport and bulk mean flow velocity, the boulder protrusion, boulder surface, and number of hydraulic jumps, which are indicators of the channel morphology, were measured regularly during the experiment. Periodic <span class="hlt">bed</span> load transport rate pulses are clearly visible in the data collected during this long-duration experiment, along with correlated fluctuations in the flow velocity and <span class="hlt">bed</span> morphology. The links among the bulk velocity, the time evolution of the morphology variables, and the <span class="hlt">bed</span> load transport rate are analyzed via correlational analysis, showing that the fluctuations are strongly related. A phase analysis of all observed variables is performed, and the average shapes of the time cycles of the fluctuations are shown. Observations indicate that the detected periodic fluctuations correspond to different <span class="hlt">bed</span> states. Furthermore, the grain size distribution through the channel, which varies in time and space, clearly influences these <span class="hlt">bed</span> load transport rate pulses. Finally, known <span class="hlt">bed</span> load transport rate formulae are tested, showing that only the application of a drag shear stress allows a correct estimation of the time fluctuations.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19860017214','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19860017214"><span>Fluidized-<span class="hlt">bed</span> development at JPL</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Hsu, G.</p> <p>1986-01-01</p> <p>Silicon deposition on silicon seed particles by silane pyrolysis in a fluidized <span class="hlt">bed</span> reactor (FBR) was investigated as a low cost, high throughput method to produce high purity polysilicon for solar cell applications. The emphasis of the research is fundamental understanding of fluidized <span class="hlt">bed</span> silicon deposition. The mechanisms involved were modeled as a six-path process: heterogeneous deposition; homogeneous decomposition; coalescence; coagulation; scavenging; and chemical vapor deposition growth on fines.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19850022760','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19850022760"><span>Microgravity silicon <span class="hlt">zoning</span> investigation</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Kern, E. L.; Gill, G. L., Jr.</p> <p>1985-01-01</p> <p>The flow instabilities in floating <span class="hlt">zones</span> of silicon were investigated and methods for investigation of these instabilities in microgravity were defined. Three principal tasks were involved: (1) characterization of the float <span class="hlt">zone</span> in small diameter rods; (2) investigation of melt flow instabilities in circular melts in silicon disks; and (3) the development of a prototype of an apparatus that could be used in near term space experiments to investigate flow instabilities in a molten <span class="hlt">zone</span>. It is shown that in a resistance heated zoner with 4 to 7 mm diameter silicon rods that the critical Marangoni number is about 1480 compared to a predicted value of 14 indicative that viable space experiments might be performed. The prototype float <span class="hlt">zone</span> apparatus is built and specifications are prepared for a flight zoner should a decision be reached to proceed with a space flight experimental investigation.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://images.nasa.gov/#/details-s77e5094.html','SCIGOVIMAGE-NASA'); return false;" href="https://images.nasa.gov/#/details-s77e5094.html"><span>Commercial Float <span class="hlt">Zone</span> Furnace</span></a></p> <p><a target="_blank" href="https://images.nasa.gov/">NASA Image and Video Library</a></p> <p></p> <p>1996-05-25</p> <p>S77-E-5094 (25 May 1996) --- Astronaut Marc Garneau, mission specialist representing the Canadian Space Agency (CSA), stands at the Commercial Float <span class="hlt">Zone</span> Furnace (CFZF) in the Spacehab Module onboard the Earth-orbiting Space Shuttle Endeavour.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.epa.gov/soil-fumigants/buffer-zone-fact-sheets','PESTICIDES'); return false;" href="https://www.epa.gov/soil-fumigants/buffer-zone-fact-sheets"><span>Buffer <span class="hlt">Zone</span> Fact Sheets</span></a></p> <p><a target="_blank" href="http://www.epa.gov/pesticides/search.htm">EPA Pesticide Factsheets</a></p> <p></p> <p></p> <p>New requirements for buffer <span class="hlt">zones</span> and sign posting contribute to soil fumigant mitigation and protection for workers and bystanders. The buffer provides distance between the pesticide application site and bystanders, reducing exposure risk.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19730008828','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19730008828"><span>Theory of <span class="hlt">zone</span> radiometry</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Farmer, R. C.; Audeh, B. J.</p> <p>1973-01-01</p> <p>A spectroscopic instrumentation system was developed which was used to measure temperature and concentration distributions in axisymmetric and two dimensional combusting flows. This measurement technique is known as <span class="hlt">zone</span> radiometry.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://ntrs.nasa.gov/search.jsp?R=20000065651&hterms=Physiology&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D70%26Ntt%3DPhysiology','NASA-TRS'); return false;" href="https://ntrs.nasa.gov/search.jsp?R=20000065651&hterms=Physiology&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D70%26Ntt%3DPhysiology"><span>The Physiology of <span class="hlt">Bed</span> Rest. Chapter 39</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Fortney, Suzanne M.; Schneider, Victor S.; Greenleaf, John E.</p> <p>1996-01-01</p> <p>Prolonged rest in <span class="hlt">bed</span> has been utilized by physicians and other health-care workers to immobilize and confine patients for rehabilitation and restoration of health since time immemorial. The sitting or horizontal position is sought by the body to relieve the strain of the upright or vertical postures, for example during syncopal situations, bone fractures, muscle injuries, fatigue, and probably also to reduce energy expenditure. Most health-care personnel are aware that adaptive responses occurring during <span class="hlt">bed</span> rest proceed concomitantly with the healing process; signs and symptoms associated with the former should be differentiated from those of the latter. Not all illnesses and infirmities benefit from prolonged <span class="hlt">bed</span> rest. Considerations in prescribing <span class="hlt">bed</span> rest for patients-including duration, body position, mode and duration of exercise, light-dark cycles, temperature, and humidity-have not been investigated adequately. More recently, adaptive physiological responses have been measured in normal, healthy subjects in the horizontal or slightly head-down postures during prolonged <span class="hlt">bed</span> rest as analogs for the adaptive responses of astronauts exposed to the microgravity environment of outer and <span class="hlt">bed</span>-rest research.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/10155483','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/10155483"><span>Electrically enhanced fluidized <span class="hlt">bed</span> heat exchanger</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Lessor, D.L.; Robertus, R.J.; Roberts, G.L.</p> <p>1994-05-01</p> <p>The experiments have shown that a high level of electrical charging can be achieved in a fluidized <span class="hlt">bed</span> of two resistive particle types; that <span class="hlt">bed</span> stabilization rather than increased sensible heat transport dominates low frequency electric field effects on heat transfer with most <span class="hlt">bed</span> loadings; and, hence, that applying an oscillatory potential difference between tubes or rods in a fluidized <span class="hlt">bed</span> of two mutual contact-charging particle species gives reduced rather than improved heat transfer. Applying an oscillatory potential difference between rods in a <span class="hlt">bed</span> of quartz particles fluidized alone did give improved heat transfer, however. With no electric field applied, most fluidized mixes were found to give higher heat transfer rates than the average of the values when each of the two species was fluidized alone. The high level of charging observed in some mixed <span class="hlt">beds</span> may prove of interest for some air cleanup applications; the results show that simultaneous fluidization of pairs of bipolar charging materials of similar particle size is possible without excessive agglomeration. This would be important for air cleanup.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://ntrs.nasa.gov/search.jsp?R=20000065651&hterms=physiology&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DTitle%26N%3D0%26No%3D60%26Ntt%3Dphysiology','NASA-TRS'); return false;" href="https://ntrs.nasa.gov/search.jsp?R=20000065651&hterms=physiology&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DTitle%26N%3D0%26No%3D60%26Ntt%3Dphysiology"><span>The Physiology of <span class="hlt">Bed</span> Rest. Chapter 39</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Fortney, Suzanne M.; Schneider, Victor S.; Greenleaf, John E.</p> <p>1996-01-01</p> <p>Prolonged rest in <span class="hlt">bed</span> has been utilized by physicians and other health-care workers to immobilize and confine patients for rehabilitation and restoration of health since time immemorial. The sitting or horizontal position is sought by the body to relieve the strain of the upright or vertical postures, for example during syncopal situations, bone fractures, muscle injuries, fatigue, and probably also to reduce energy expenditure. Most health-care personnel are aware that adaptive responses occurring during <span class="hlt">bed</span> rest proceed concomitantly with the healing process; signs and symptoms associated with the former should be differentiated from those of the latter. Not all illnesses and infirmities benefit from prolonged <span class="hlt">bed</span> rest. Considerations in prescribing <span class="hlt">bed</span> rest for patients-including duration, body position, mode and duration of exercise, light-dark cycles, temperature, and humidity-have not been investigated adequately. More recently, adaptive physiological responses have been measured in normal, healthy subjects in the horizontal or slightly head-down postures during prolonged <span class="hlt">bed</span> rest as analogs for the adaptive responses of astronauts exposed to the microgravity environment of outer and <span class="hlt">bed</span>-rest research.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/fs/2000/0156/report.pdf','USGSPUBS'); return false;" href="https://pubs.usgs.gov/fs/2000/0156/report.pdf"><span>Water produced with coal-<span class="hlt">bed</span> methane</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>,</p> <p>2000-01-01</p> <p>Natural gas produced from coal <span class="hlt">beds</span> (coal-<span class="hlt">bed</span> methane, CBM) accounts for about 7.5 percent of the total natural gas production in the United States. Along with this gas, water is also brought to the surface. The amount of water produced from most CBM wells is relatively high compared to conventional natural gas wells because coal <span class="hlt">beds</span> contain many fractures and pores that can contain and transmit large volumes of water. In some areas, coal <span class="hlt">beds</span> may function as regional or local aquifers and important sources for ground water. The water in coal <span class="hlt">beds</span> contributes to pressure in the reservoir that keeps methane gas adsorbed to the surface of the coal. This water must be removed by pumping in order to lower the pressure in the reservoir and stimulate desorption of methane from the coal (fi g. 1). Over time, volumes of pumped water typically decrease and the production of gas increases as coal <span class="hlt">beds</span> near the well bore are dewatered.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/22764092','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/22764092"><span>Calculating the need for intensive care <span class="hlt">beds</span>.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Pearson, Gale A; Reynolds, Fiona; Stickley, John</p> <p>2012-11-01</p> <p>Prompted by high refused admission rates, we sought to model demand for our 20 <span class="hlt">bed</span> paediatric intensive care unit. We analysed activity (admissions) and demand (admissions plus refused admissions). The recommended method for calculating the required number of intensive care <span class="hlt">beds</span> assumes a Poisson distribution based upon the size of the local catchment population, the incidence of intensive care admission and the average length of stay. We compared it to the Monte Carlo method which would also include supra-regional referrals not otherwise accounted for but which, due to their complexity, tend to have a longer stay than average. For the new method we assigned data from randomly selected emergency admissions to the refused admissions. We then compared occupancy scenarios obtained by random sampling from the data with replacement. There was an increase in demand for intensive care over time. Therefore, in order to provide an up-to-date model, we restricted the final analysis to data from the two most recent years (2327 admissions and 324 refused admissions). The conventional method suggested 27 <span class="hlt">beds</span> covers 95% of the year. The Monte Carlo method showed 95% compliance with 34 <span class="hlt">beds</span>, with seasonal variation quantified as 30 <span class="hlt">beds</span> needed in the summer and 38 in the winter. Both approaches suggest that the high refused admission rate is due to insufficient capacity. The Monte Carlo analysis is based upon the total workload (including supra-regional referrals) and predicts a greater <span class="hlt">bed</span> requirement than the current recommended approach.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/of/2007/1437/l/','USGSPUBS'); return false;" href="https://pubs.usgs.gov/of/2007/1437/l/"><span>Cascadia Subduction <span class="hlt">Zone</span></span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Frankel, Arthur D.; Petersen, Mark D.</p> <p>2008-01-01</p> <p>The geometry and recurrence times of large earthquakes associated with the Cascadia Subduction <span class="hlt">Zone</span> (CSZ) were discussed and debated at a March 28-29, 2006 Pacific Northwest workshop for the USGS National Seismic Hazard Maps. The CSZ is modeled from Cape Mendocino in California to Vancouver Island in British Columbia. We include the same geometry and weighting scheme as was used in the 2002 model (Frankel and others, 2002) based on thermal constraints (Fig. 1; Fluck and others, 1997 and a reexamination by Wang et al., 2003, Fig. 11, eastern edge of intermediate shading). This scheme includes four possibilities for the lower (eastern) limit of seismic rupture: the base of elastic <span class="hlt">zone</span> (weight 0.1), the base of transition <span class="hlt">zone</span> (weight 0.2), the midpoint of the transition <span class="hlt">zone</span> (weight 0.2), and a model with a long north-south segment at 123.8? W in the southern and central portions of the CSZ, with a dogleg to the northwest in the northern portion of the <span class="hlt">zone</span> (weight 0.5). The latter model was derived from the approximate average longitude of the contour of the 30 km depth of the CSZ as modeled by Fluck et al. (1997). A global study of the maximum depth of thrust earthquakes on subduction <span class="hlt">zones</span> by Tichelaar and Ruff (1993) indicated maximum depths of about 40 km for most of the subduction <span class="hlt">zones</span> studied, although the Mexican subduction <span class="hlt">zone</span> had a maximum depth of about 25 km (R. LaForge, pers. comm., 2006). The recent inversion of GPS data by McCaffrey et al. (2007) shows a significant amount of coupling (a coupling factor of 0.2-0.3) as far east as 123.8? West in some portions of the CSZ. Both of these lines of evidence lend support to the model with a north-south segment at 123.8? W.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/1179216','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/1179216"><span>WTP Pretreatment Facility Potential Design Deficiencies--Sliding <span class="hlt">Bed</span> and Sliding <span class="hlt">Bed</span> Erosion Assessment</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Hansen, E. K.</p> <p>2015-05-06</p> <p>This assessment is based on readily available literature and discusses both Newtonian and non-Newtonian slurries with respect to sliding <span class="hlt">beds</span> and erosion due to sliding <span class="hlt">beds</span>. This report does not quantify the size of the sliding <span class="hlt">beds</span> or erosion rates due to sliding <span class="hlt">beds</span>, but only assesses if they could be present. This assessment addresses process pipelines in the Pretreatment (PT) facility and the high level waste (HLW) transfer lines leaving the PT facility to the HLW vitrification facility concentrate receipt vessel.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/1114762','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/1114762"><span>CFD-DEM study of effect of <span class="hlt">bed</span> thickness for bubbling fluidized <span class="hlt">beds</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Tingwen, Li; Gopalakrishnan, Pradeep; Garg, Rahul; Shahnam, Mehrdad</p> <p>2011-10-01</p> <p>The effect of <span class="hlt">bed</span> thickness in rectangular fluidized <span class="hlt">beds</span> is investigated through the CFD–DEM simulations of small-scale systems. Numerical results are compared for bubbling fluidized <span class="hlt">beds</span> of various <span class="hlt">bed</span> thicknesses with respect to particle packing, <span class="hlt">bed</span> expansion, bubble behavior, solids velocities, and particle kinetic energy. Good two-dimensional (2D) flow behavior is observed in the <span class="hlt">bed</span> having a thickness of up to 20 particle diameters. However, a strong three-dimensional (3D) flow behavior is observed in <span class="hlt">beds</span> with a thickness of 40 particle diameters, indicating the transition from 2D flow to 3D flow within the range of 20–40 particle diameters. Comparison of velocity profiles near the walls and at the center of the <span class="hlt">bed</span> shows significant impact of the front and back walls on the flow hydrodynamics of pseudo-2D fluidized <span class="hlt">beds</span>. Hence, for quantitative comparison with experiments in pseudo-2D columns, the effect of walls has to be accounted for in numerical simulations.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/25366326','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/25366326"><span>Hospital <span class="hlt">Bed</span> Type, the Electronic Medical Record, and Safe <span class="hlt">Bed</span> Elevation in the Intensive Care Setting.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Fitch, Zachary W; Duquaine, Damon; Ohkuma, Rika; Schneider, Eric B; Whitman, Glenn J R</p> <p>2016-01-01</p> <p>In mechanically ventilated patients, head of <span class="hlt">bed</span> (HOB) elevation above 30° decreases the risk of ventilator-associated pneumonia. The research team studied (a) compliance with proper HOB elevation in their cardiac surgical intensive care unit, (b) the accuracy of HOB angles recorded in the electronic medical record (EMR), and (c) the effect of <span class="hlt">bed</span> type on (a) and (b). Nurses were polled to discover how HOB angles were measured in practice. HOB angles were compliant in 80% of observations. Compliance was more frequent in <span class="hlt">beds</span> with side-of-<span class="hlt">bed</span> angle indicators (SBI) than <span class="hlt">beds</span> with under-<span class="hlt">bed</span> angle indicators (UBI; 88% vs 77%, P = .04). Charting in the EMR was accurate in 50% of SBI <span class="hlt">bed</span> observations but only 20% of UBI <span class="hlt">bed</span> observations (P < .0001). Sixty-seven percent of nurses used the SBI; 27% used the UBI; 6% used estimation alone. Though compliance was suboptimal, compliance and EMR accuracy were significantly associated with <span class="hlt">bed</span> type. Bedside indicators are underutilized. © The Author(s) 2014.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/26409356','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/26409356"><span>Effects of <span class="hlt">bed</span> height on the biomechanics of hospital <span class="hlt">bed</span> entry and egress.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Merryweather, Andrew S; Morse, Janice M; Doig, Alexa K; Godfrey, Nathan W; Gervais, Pierre; Bloswick, Donald S</p> <p>2015-01-01</p> <p>Although a significant proportion of patient falls in hospitals occur in the vicinity of the hospital <span class="hlt">bed</span>, little is known about the contribution of <span class="hlt">bed</span> height to fall risk. To compare lower extremity joint torques and angles during hospital <span class="hlt">bed</span> entry and egress at two <span class="hlt">bed</span> heights. Twelve adults (age > 55) were purposively selected and had variety of strength and mobility limitations. Biomechanical data for this pilot study were collected with three digital video cameras and processed to obtain estimates for joint torques and included angles. At the low <span class="hlt">bed</span> height, hip torque for <span class="hlt">bed</span> entry was significantly higher, and hip, knee, and ankle flexion angles were significantly smaller. The absence of significant differences in knee and ankle torques were the result of a compensation strategy that shifts the center of mass forward by flexing the torso during low <span class="hlt">bed</span> ingress. Torque data from the egress motion were similar, however 50% of participants were unable to rise from the low <span class="hlt">bed</span> without assistance. Healthcare providers should be aware that low <span class="hlt">bed</span> heights pose safety risks to the population for which they were designed-elderly persons at high risk for falling.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2011MinPe.103...49J','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2011MinPe.103...49J"><span>The origin of skarn <span class="hlt">beds</span>, Ryllshyttan Zn-Pb-Ag + magnetite deposit, Bergslagen, Sweden</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Jansson, Nils F.; Allen, Rodney L.</p> <p>2011-11-01</p> <p> component. Subsequently, the calcareous Fe formations were subjected to post-depositional alteration by hydrothermal fluids, locally yielding more manganoan and magnesian assemblages. The Mn-alteration is manifested by lateral gradations from epidote-grandite-clinopyroxene±magnetite rocks into significantly more Mn-rich quartz-spessartine rocks and massive andradite rocks over distances of less than 10 cm within individual skarn <span class="hlt">beds</span>. Magnesian alteration is manifested by the development of discordant <span class="hlt">zones</span> of pargasite para-amphibolites and formation of stratiform pargasite rocks texturally similar to the interlaminated grandite-epidote-ferroan diopside rocks. The latter increase in abundance towards the Ryllshyttan deposit and are associated with pre-metamorphic/pre-tectonic K-Mg-Fe±Si alteration (now biotite-phlogopite-garnet-cordierite-pargasite rocks) that is related to base metal mineralization. The <span class="hlt">zone</span> of Mn- and Mg-altered skarn <span class="hlt">beds</span> extends beyond the <span class="hlt">zone</span> of pervasive K-Mg-Fe±Si alteration around Ryllshyttan. This suggests that the skarn <span class="hlt">bed</span> progenitors, or their sedimentary contacts against rhyolitic ash-siltstones, acted as conduits to outflowing hydrothermal fluids. The chemical and mineralogical imprint, imposed on affected <span class="hlt">beds</span> by alteration, may serve as indicators of proximity to intense K-Mg-Fe±Si alteration envelopes around other base metal sulphide deposits in Bergslagen. The last recorded event comprised syn-tectonic veining of competent massive andradite skarn <span class="hlt">beds</span>. The veins contain quartz-albite-epidote-ferroan diopside-actinolite assemblages.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=2759645','PMC'); return false;" href="https://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=2759645"><span>Dentin Caries <span class="hlt">Zones</span></span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pmc">PubMed Central</a></p> <p>Pugach, M.K.; Strother, J.; Darling, C.L.; Fried, D.; Gansky, S.A.; Marshall, S.J.; Marshall, G.W.</p> <p>2009-01-01</p> <p>Caries Detector staining reveals 4 <span class="hlt">zones</span> in dentin containing caries lesions, but characteristics of each <span class="hlt">zone</span> are not well-defined. We therefore investigated the physical and microstructural properties of carious dentin in the 4 different <span class="hlt">zones</span> to determine important differences revealed by Caries Detector staining. Six arrested dentin caries lesions and 2 normal controls were Caries-Detector-stained, each <span class="hlt">zone</span> (pink, light pink, transparent, apparently normal) being analyzed by atomic force microscopy (AFM) imaging for microstructure, by AFM nano-indentation for mechanical properties, and by transverse digital microradiography (TMR) for mineral content. Microstructure changes, and nanomechanical properties and mineral content significantly decreased across <span class="hlt">zones</span>. Hydrated elastic modulus and mineral content from normal dentin to pink Caries-Detector-stained dentin ranged from 19.5 [10.6-25.3] GPa to 1.6 [0.0-5.0] GPa and from 42.9 [39.8-44.6] vol% to 12.4 [9.1-14.2] vol%, respectively. Even the most demineralized pink <span class="hlt">zone</span> contained considerable residual mineral. PMID:19131321</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2009QSRv...28..107S','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2009QSRv...28..107S"><span>Magnetic fabrics of the Douglas Till of the Superior lobe: exploring <span class="hlt">bed</span>-deformation kinematics</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Shumway, Jacqueline R.; Iverson, Neal R.</p> <p>2009-01-01</p> <p>The Superior lobe of the Laurentide ice sheet, during its last advance into northwestern Wisconsin, may have moved and transported sediment primarily through deep, widespread shear of its <span class="hlt">bed</span> to high strains (>100). To study the kinematics of this deformation, we measured the anisotropy of magnetic susceptibility of 3750 intact samples of its basal till—the Douglas member of the Miller Creek formation—collected from eight profiles at 0.2 m depth increments. A benchmark for interpretations was provided by results of ring-shear experiments conducted on the Douglas Till, which provided fabric characteristics for the case of horizontal simple shear. Orientations of maximum susceptibility ( k1) were controlled by preferred orientations of silt-sized magnetite grains and were similar to sand-grain orientations measured in thin sections. Strengths of fabrics formed by orientations of k1 indicate that most of the till sampled was deformed but to variable strains. Deformation averaged over the 20 km spanned by the study approximated horizontal simple shear. However, large differences in k1 fabric azimuths (>45°) over lateral distances of meters to tens of meters indicate highly heterogeneous <span class="hlt">bed</span> deformation, perhaps focused in anastomosing <span class="hlt">zones</span> with associated divergent and convergent till shear. This interpretation is supported by orientations of principal susceptibilities that imply, in many cases, either that shear planes were steeply dipping, particularly transverse to the shearing direction, or that there were major components of pure shear. Variations in k1 fabric azimuth with depth indicate that most of the till thickness did not shear simultaneously; rather, till accumulated at the <span class="hlt">bed</span> as shear direction changed in response to temporally shifting <span class="hlt">zones</span> of shallow deformation (<1 m). This heterogeneous, temporally variable deformation of the <span class="hlt">bed</span> differs from many applications of the <span class="hlt">bed</span>-deformation model but is consistent with subglacial measurements at modern</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/1981scrs.rept......','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/1981scrs.rept......"><span>Sealing considerations for repository shafts in <span class="hlt">bedded</span> and dome salt</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p></p> <p>1981-12-01</p> <p>The geologic and hydrologic data base is reviewed for penetration seal designs referenced to the Los Medanos <span class="hlt">bedded</span> salt site in New Mexico and to four candidate salt domes in the Gulf Interior. Experience with existing shafts highlights the importance, for shaft decommissioning as well as operation, of achieving an adequate seal at and immediately below the top of salt. Possible constuction procedures for repository shafts are reviewed, noting advantages and disadvantages with respect to repository sealing. At this stage, there does not appear to be a clear preference for excavation by drill and blast or by drilling. If conventional drill and blast methods are used, it may be necessary to grout in permeable <span class="hlt">zones</span> above the salt. An important consideration with respect to sealing is that grouting operations (or freezing should it be used) should not establish connections between the top of salt and waterbearing <span class="hlt">zones</span> higher in the stratigraphic section. Generally, it is concluded that Los Medanos and the dome salt sites are favorable candidate repository sites from the point of view of sealing.</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_20");'>20</a></li> <li><a href="#" onclick='return showDiv("page_21");'>21</a></li> <li class="active"><span>22</span></li> <li><a href="#" onclick='return showDiv("page_23");'>23</a></li> <li><a href="#" onclick='return showDiv("page_24");'>24</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_22 --> <div id="page_23" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_21");'>21</a></li> <li><a href="#" onclick='return showDiv("page_22");'>22</a></li> <li class="active"><span>23</span></li> <li><a href="#" onclick='return showDiv("page_24");'>24</a></li> <li><a href="#" onclick='return showDiv("page_25");'>25</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="441"> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/11083155','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/11083155"><span>Implications of an adjustable <span class="hlt">bed</span> height during standard nursing tasks on spinal motion, perceived exertion and muscular activity.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Caboor, D E; Verlinden, M O; Zinzen, E; Van Roy, P; Van Riel, M P; Clarys, J P</p> <p>2000-10-01</p> <p>Manual handling is a source of occupational stress, particularly for nursing personnel. High levels of biomechanical strain are associated with lifting and transferring patients, especially when the tasks are performed in flexed and twisted positions that induce an increased risk of functional and musculoskeletal problems. The use of adjustable <span class="hlt">beds</span> in nursing practice has been suggested as a means of influencing working postures and reducing the muscular demands on nurses. The purpose of this study was to investigate the effects on spinal motion, muscular activity and perceived exertion when nurses had the opportunity to adjust <span class="hlt">bed</span> height. The measures recorded during the conduct of standardized patient handling tasks were the changes in posture (inclination) and in shape (sagittal bending, side bending, axial rotation). Muscular activity was measured using surface electromyography. Perceived exertion was rated using the 15-graded Borg scale. The range of motion was not influenced by the adjustment of <span class="hlt">bed</span> height, but rather a shift of the time duration histogram was noticed in the direction of the erect, safer position. The time spent in the safe <span class="hlt">zone</span> of spinal motion near the erect position was significantly increased and was significantly decreased in the potential health-hazardous <span class="hlt">zones</span> of spinal motion in the extreme positions. No differences in muscular activity or in perceived exertion were found between the two <span class="hlt">bed</span> height conditions for any of the muscle groups. It was concluded that the quality of spinal motion is enhanced when the opportunity of adjusting the <span class="hlt">bed</span> height is offered.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2017JSG....97..118F','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2017JSG....97..118F"><span>Fault <span class="hlt">zone</span> processes in mechanically layered mudrock and chalk</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Ferrill, David A.; Evans, Mark A.; McGinnis, Ronald N.; Morris, Alan P.; Smart, Kevin J.; Wigginton, Sarah S.; Gulliver, Kirk D. H.; Lehrmann, Daniel; de Zoeten, Erich; Sickmann, Zach</p> <p>2017-04-01</p> <p>A 1.5 km long natural cliff outcrop of nearly horizontal Eagle Ford Formation in south Texas exposes northwest and southeast dipping normal faults with displacements of 0.01-7 m cutting mudrock, chalk, limestone, and volcanic ash. These faults provide analogs for both natural and hydraulically-induced deformation in the productive Eagle Ford Formation - a major unconventional oil and gas reservoir in south Texas, U.S.A. - and other mechanically layered hydrocarbon reservoirs. Fault dips are steep to vertical through chalk and limestone <span class="hlt">beds</span>, and moderate through mudrock and clay-rich ash, resulting in refracted fault profiles. Steeply dipping fault segments contain rhombohedral calcite veins that cross the fault <span class="hlt">zone</span> obliquely, parallel to shear segments in mudrock. The vertical dimensions of the calcite veins correspond to the thickness of offset competent <span class="hlt">beds</span> with which they are contiguous, and the slip parallel dimension is proportional to fault displacement. Failure surface characteristics, including mixed tensile and shear segments, indicate hybrid failure in chalk and limestone, whereas shear failure predominates in mudrock and ash <span class="hlt">beds</span> - these changes in failure mode contribute to variation in fault dip. Slip on the shear segments caused dilation of the steeper hybrid segments. Tabular sheets of calcite grew by repeated fault slip, dilation, and cementation. Fluid inclusion and stable isotope geochemistry analyses of fault <span class="hlt">zone</span> cements indicate episodic reactivation at 1.4-4.2 km depths. The results of these analyses document a dramatic <span class="hlt">bed</span>-scale lithologic control on fault <span class="hlt">zone</span> architecture that is directly relevant to the development of porosity and permeability anisotropy along faults.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/23025189','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/23025189"><span>Carbon dioxide fumigation for controlling <span class="hlt">bed</span> bugs.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Wang, Changlu; Lü, Lihua; Xu, Ming</p> <p>2012-09-01</p> <p>We investigated the potential of carbon dioxide (CO2) fumigation as a method for controlling <span class="hlt">bed</span> bugs, Cimex lectularius L. The effect of <span class="hlt">bed</span> bug developmental stage, temperature, and CO2 concentration on the minimum time to kill 100% of <span class="hlt">bed</span> bugs was determined. The minimum CO2 concentration lethal to all <span class="hlt">bed</span> bug stages was approximately 30% with 24 h exposure time at 25 degrees C. The minimum fumigation time required to kill 100% of eggs using 100% CO2 at 20, 25, and 30 degrees C were 3, 7, and 8 h, respectively; the minimum fumigation time to kill 100% of adult males/nymphs were 8, 13, and 14 h, respectively. The minimum time to kill 100% of adult males/nymphs using 50 and 70% CO2 at 25 degrees C were 18 and 16 h, respectively. We found that eggs were not completely killed after 24 h fumigation when the CO2 concentration was lower than 80%. Thus, <span class="hlt">bed</span> bug eggs were more susceptible to 100% CO2 fumigation than nymphs and adult males but more tolerant than nymphs and adult males with lower CO2 concentration (50-80%). There were no significant differences among nymphs, adult males, and adult females in their susceptibility to 100% CO2 fumigation. A 24 h fumigation in sealed 158 liter (42 gallon) heavy duty garbage bags filled 90% full with fabric materials and/or boxes and 1,350 g dry ice per bag was sufficient to kill all stages of <span class="hlt">bed</span> bugs hidden in the materials at room temperature (23-24 degrees C). Sealed heavy duty garbage bags maintained > or = 94% CO2 for at least 24 h. Custom-made double zipper plastic bags (122 x 183 cm) were also used to evaluate the effectiveness of CO2 fumigation for controlling <span class="hlt">bed</span> bugs. Each bag was filled with fabric and boxes to 50-90% full. <span class="hlt">Bed</span> bugs were hidden in various locations of each bag. CO2 was introduced into the bags through a CO2 cylinder. CO2 fumigation lasting 24-48 h was sufficient to kill all stages of <span class="hlt">bed</span> bugs at room temperature, depending on the quantity of materials placed in each bag and whether CO2 was</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.gpo.gov/fdsys/pkg/CFR-2010-title21-vol8/pdf/CFR-2010-title21-vol8-sec892-1350.pdf','CFR'); return false;" href="https://www.gpo.gov/fdsys/pkg/CFR-2010-title21-vol8/pdf/CFR-2010-title21-vol8-sec892-1350.pdf"><span>21 CFR 892.1350 - Nuclear scanning <span class="hlt">bed</span>.</span></a></p> <p><a target="_blank" href="http://www.gpo.gov/fdsys/browse/collectionCfr.action?selectedYearFrom=2010&page.go=Go">Code of Federal Regulations, 2010 CFR</a></p> <p></p> <p>2010-04-01</p> <p>... 21 Food and Drugs 8 2010-04-01 2010-04-01 false Nuclear scanning <span class="hlt">bed</span>. 892.1350 Section 892.1350...) MEDICAL DEVICES RADIOLOGY DEVICES Diagnostic Devices § 892.1350 Nuclear scanning <span class="hlt">bed</span>. (a) Identification. A nuclear scanning <span class="hlt">bed</span> is an adjustable <span class="hlt">bed</span> intended to support a patient during a nuclear...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.gpo.gov/fdsys/pkg/CFR-2013-title21-vol8/pdf/CFR-2013-title21-vol8-sec880-5110.pdf','CFR2013'); return false;" href="https://www.gpo.gov/fdsys/pkg/CFR-2013-title21-vol8/pdf/CFR-2013-title21-vol8-sec880-5110.pdf"><span>21 CFR 880.5110 - Hydraulic adjustable hospital <span class="hlt">bed</span>.</span></a></p> <p><a target="_blank" href="http://www.gpo.gov/fdsys/browse/collectionCfr.action?selectedYearFrom=2013&page.go=Go">Code of Federal Regulations, 2013 CFR</a></p> <p></p> <p>2013-04-01</p> <p>... 21 Food and Drugs 8 2013-04-01 2013-04-01 false Hydraulic adjustable hospital <span class="hlt">bed</span>. 880.5110... Therapeutic Devices § 880.5110 Hydraulic adjustable hospital <span class="hlt">bed</span>. (a) Identification. A hydraulic adjustable hospital <span class="hlt">bed</span> is a device intended for medical purposes that consists of a <span class="hlt">bed</span> with a hydraulic...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.gpo.gov/fdsys/pkg/CFR-2014-title21-vol8/pdf/CFR-2014-title21-vol8-sec880-5110.pdf','CFR2014'); return false;" href="https://www.gpo.gov/fdsys/pkg/CFR-2014-title21-vol8/pdf/CFR-2014-title21-vol8-sec880-5110.pdf"><span>21 CFR 880.5110 - Hydraulic adjustable hospital <span class="hlt">bed</span>.</span></a></p> <p><a target="_blank" href="http://www.gpo.gov/fdsys/browse/collectionCfr.action?selectedYearFrom=2014&page.go=Go">Code of Federal Regulations, 2014 CFR</a></p> <p></p> <p>2014-04-01</p> <p>... 21 Food and Drugs 8 2014-04-01 2014-04-01 false Hydraulic adjustable hospital <span class="hlt">bed</span>. 880.5110... Therapeutic Devices § 880.5110 Hydraulic adjustable hospital <span class="hlt">bed</span>. (a) Identification. A hydraulic adjustable hospital <span class="hlt">bed</span> is a device intended for medical purposes that consists of a <span class="hlt">bed</span> with a hydraulic...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.gpo.gov/fdsys/pkg/CFR-2011-title21-vol8/pdf/CFR-2011-title21-vol8-sec880-5110.pdf','CFR2011'); return false;" href="https://www.gpo.gov/fdsys/pkg/CFR-2011-title21-vol8/pdf/CFR-2011-title21-vol8-sec880-5110.pdf"><span>21 CFR 880.5110 - Hydraulic adjustable hospital <span class="hlt">bed</span>.</span></a></p> <p><a target="_blank" href="http://www.gpo.gov/fdsys/browse/collectionCfr.action?selectedYearFrom=2011&page.go=Go">Code of Federal Regulations, 2011 CFR</a></p> <p></p> <p>2011-04-01</p> <p>... 21 Food and Drugs 8 2011-04-01 2011-04-01 false Hydraulic adjustable hospital <span class="hlt">bed</span>. 880.5110... Therapeutic Devices § 880.5110 Hydraulic adjustable hospital <span class="hlt">bed</span>. (a) Identification. A hydraulic adjustable hospital <span class="hlt">bed</span> is a device intended for medical purposes that consists of a <span class="hlt">bed</span> with a hydraulic...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.gpo.gov/fdsys/pkg/CFR-2012-title21-vol8/pdf/CFR-2012-title21-vol8-sec880-5110.pdf','CFR2012'); return false;" href="https://www.gpo.gov/fdsys/pkg/CFR-2012-title21-vol8/pdf/CFR-2012-title21-vol8-sec880-5110.pdf"><span>21 CFR 880.5110 - Hydraulic adjustable hospital <span class="hlt">bed</span>.</span></a></p> <p><a target="_blank" href="http://www.gpo.gov/fdsys/browse/collectionCfr.action?selectedYearFrom=2012&page.go=Go">Code of Federal Regulations, 2012 CFR</a></p> <p></p> <p>2012-04-01</p> <p>... 21 Food and Drugs 8 2012-04-01 2012-04-01 false Hydraulic adjustable hospital <span class="hlt">bed</span>. 880.5110... Therapeutic Devices § 880.5110 Hydraulic adjustable hospital <span class="hlt">bed</span>. (a) Identification. A hydraulic adjustable hospital <span class="hlt">bed</span> is a device intended for medical purposes that consists of a <span class="hlt">bed</span> with a hydraulic...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.gpo.gov/fdsys/pkg/CFR-2010-title21-vol8/pdf/CFR-2010-title21-vol8-sec880-5120.pdf','CFR'); return false;" href="https://www.gpo.gov/fdsys/pkg/CFR-2010-title21-vol8/pdf/CFR-2010-title21-vol8-sec880-5120.pdf"><span>21 CFR 880.5120 - Manual adjustable hospital <span class="hlt">bed</span>.</span></a></p> <p><a target="_blank" href="http://www.gpo.gov/fdsys/browse/collectionCfr.action?selectedYearFrom=2010&page.go=Go">Code of Federal Regulations, 2010 CFR</a></p> <p></p> <p>2010-04-01</p> <p>... 21 Food and Drugs 8 2010-04-01 2010-04-01 false Manual adjustable hospital <span class="hlt">bed</span>. 880.5120 Section... Therapeutic Devices § 880.5120 Manual adjustable hospital <span class="hlt">bed</span>. (a) Identification. A manual adjustable hospital <span class="hlt">bed</span> is a device intended for medical purposes that consists of a <span class="hlt">bed</span> with a manual...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2015JAfES.111..156Z','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2015JAfES.111..156Z"><span>Identification of potential artificial groundwater recharge <span class="hlt">zones</span> in Northwestern Saudi Arabia using GIS and Boolean logic</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Zaidi, Faisal K.; Nazzal, Yousef; Ahmed, Izrar; Naeem, Muhammad; Jafri, Muhammad Kamran</p> <p>2015-11-01</p> <p>Identifying potential groundwater recharge <span class="hlt">zones</span> is a pre-requisite for any artificial recharge project. The present study focuses on identifying the potential <span class="hlt">zones</span> of Artificial Groundwater Recharge (AGR) in Northwestern Saudi Arabia. Parameters including slope, soil texture, vadose <span class="hlt">zone</span> thickness, groundwater quality (TDS) and type of water bearing formation were integrated in a GIS environment using Boolean logic. The results showed that 17.90% of the total studied area is suitable for AGR. The identified <span class="hlt">zones</span> were integrated with the land use/land cover map to avoid agricultural and inhabited lands which reduced the total potential area to 14.24%. Geomorphologically the wadi <span class="hlt">beds</span> are the most suitable sites for recharge. On the basis of the potential AGR <span class="hlt">zones</span> closeness to the available recharge water supply (rain water, desalinated sea water and treated waste water) the potential <span class="hlt">zones</span> were classified as Category A (high priority) and Category B (low priority).</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/23745429','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/23745429"><span>[Comparison of PAHs distribution in stabilized sludge by sludge drying <span class="hlt">bed</span> and reed <span class="hlt">bed</span>].</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Cui, Yu-Bo; Sun, Hong-Jie; Ran, Chun-Qiu; Li, Jin-Feng; Xie, Yao</p> <p>2013-03-01</p> <p>The difference in the removal efficiencies of polycyclic aromatic hydrocarbons (PAHs) in planted and unplanted sludge drying <span class="hlt">bed</span> was investigated. Pilot-scale sludge drying <span class="hlt">bed</span> and reed <span class="hlt">bed</span> had the same size of 3.0 m x 1.0 m x 1.3 m (L x W x H), and the <span class="hlt">bed</span> height consisted of a 65 cm media layer and a 65 cm super height. Both <span class="hlt">beds</span> had a ventilation pipe which was mounted on the drainage pipes. The experiment lasted for three years, and the first two years was the sludge loading period, and the third year was the natural stabilization period. In the first two years, a total thickness of 8.4 m of sludge was loaded and the average sludge loading rate was 41.3 kg x (m2 x a)(-1). After the three-year stabilization, the contents of the sixteen PAHs decreased with time in both the sludge drying <span class="hlt">bed</span> and the reed <span class="hlt">bed</span>. The total PAHs contents in the surface, middle and bottom sludge layers in the sludge drying <span class="hlt">bed</span> were 4.161, 3.543 and 3.118 mg x kg(-1) (DW), corresponding to 26.91%, 37.77% and 45.23% of removal; and the values in the reed <span class="hlt">bed</span> were 2.722, 1.648 and 1.218 mg x kg(-1) (DW), corresponding to 52.18%, 71.05% and 78.60% of removal. The average PAHs removal in the reed <span class="hlt">bed</span> was 29.86% higher than that in the sludge drying <span class="hlt">bed</span>. In the stabilized sludge, the removal of low-molecular-weight PAHs predominated. The results suggested that reed played a positive role in the removal of PAHs.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/21404868','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/21404868"><span>Effectiveness of <span class="hlt">bed</span> bug monitors for detecting and trapping <span class="hlt">bed</span> bugs in apartments.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Wang, Changlu; Tsai, Wan-Tien; Cooper, Richard; White, Jeffrey</p> <p>2011-02-01</p> <p><span class="hlt">Bed</span> bugs, Cimex lectularius L., are now considered a serious urban pest in the United States. Because they are small and difficult to find, there has been strong interest in developing and using monitoring tools to detect <span class="hlt">bed</span> bugs and evaluate the results of <span class="hlt">bed</span> bug control efforts. Several <span class="hlt">bed</span> bug monitoring devices were developed recently, but their effectiveness is unknown. We comparatively evaluated three active monitors that contain attractants: CDC3000, NightWatch, and a home-made dry ice trap. The Climbup Insect Interceptor, a passive monitor (without attractants), was used for estimating the <span class="hlt">bed</span> bug numbers before and after placing active monitors. The results of the Interceptors also were compared with the results of the active monitors. In occupied apartments, the relative effectiveness of the active monitors was: dry ice trap > CDC3000 > NightWatch. In lightly infested apartments, the Interceptor (operated for 7 d) trapped similar number of <span class="hlt">bed</span> bugs as the dry ice trap (operated for 1 d) and trapped more <span class="hlt">bed</span> bugs than CDC3000 and NightWatch (operated for 1 d). The Interceptor was also more effective than visual inspections in detecting the presence of small numbers of <span class="hlt">bed</span> bugs. CDC3000 and the dry ice trap operated for 1 d were equally as effective as the visual inspections for detecting very low level of infestations, whereas 1-d deployment of NightWatch detected significantly lower number of infestations compared with visual inspections. NightWatch was designed to be able to operate for several consecutive nights. When operated for four nights, NightWatch trapped similar number of <span class="hlt">bed</span> bugs as the Interceptors operated for 10 d after deployment of NightWatch. We conclude these monitors are effective tools in detecting early <span class="hlt">bed</span> bug infestations and evaluating the results of <span class="hlt">bed</span> bug control programs.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2003AGUFM.V42B0356B','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2003AGUFM.V42B0356B"><span>The Significance of Cross-<span class="hlt">Bedded</span> Surge Deposits</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Burgisser, A.; Gardner, J. E.</p> <p>2003-12-01</p> <p> of density because the force needed to rotate a clast at rest varies linearly with density but with the fourth power of the diameter. As a result, traction-dominated transport sorts clasts only by size, reinforcing the coarser end of the density sorting of the transport system by remobilizing and mixing finer grains while leaving the coarse fraction. Coarse-grain layers well sorted in density are thus composed of clasts traveling successively through the transport system and the traction <span class="hlt">bed</span>. Those coarse layers retain a memory of the large-scale transport system, whereas boundary layer processes control the sorting of the finer grain sizes. The general absence of density sorting within <span class="hlt">zones</span> in transition with massive deposit is consistent with an increasing control of traction-dominated transport across the transition. Dunes appear to form around a nucleus of clasts creating a small protrusion and grow layer by layer via accretion. This feedback growth indifferently produces prograde or retrograde dune crests. The cascading distribution of dunes suggests that the smaller dunes are built in response to the emplacement of a large dune. Consequently, dunes originate from local disturbances of the boundary layer that is rapidly attenuated downstream. If this cascading process is repeated, the original dune string is likely to be reworked into a complex array of dune forms. The shapes and sizes of dunes thus record little information on the large-scale dynamics of the surge.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2014AGUFM.C53B0303S','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2014AGUFM.C53B0303S"><span>Characterizing Englacial Attenuation and Grounding <span class="hlt">Zone</span> Geometry Using Airborne Radar Sounding</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Schroeder, D. M.; Grima, C.; Blankenship, D. D.</p> <p>2014-12-01</p> <p>The impact of warm ocean water on ice sheet retreat and stability is a one of the primary drivers and sources of uncertainty for the rate of global sea level rise. One critical but challenging observation required to understand and model this impact is the location and extent of grounding ice sheet <span class="hlt">zones</span>. However, existing surface topography based techniques do not directly detect the location where ocean water reaches (or breaches) grounded ice at the <span class="hlt">bed</span>, which can significantly affect ice sheet stability. The primary geophysical tool for directly observing the basal properties of ice sheets is airborne radar sounding. However, uncertainty in englacial attenuation from unknown ice temperature and chemistry can lead to erroneous interpretation of subglacial conditions from <span class="hlt">bed</span> echo strengths alone . Recently developed analysis techniques for radar sounding data have overcome this challenge by taking advantage of information in the angular distribution of <span class="hlt">bed</span> echo energy and joint modeling of radar returns and water routing. We have developed similar approaches to analyze the spatial pattern and character of echoes to address the problems of improved characterization of grounding <span class="hlt">zone</span> geometry and englacial attenuation. The spatial signal of the transition from an ice-<span class="hlt">bed</span> interface to an ice-ocean interface is an increase in <span class="hlt">bed</span> echo strength. However, rapidly changing attenuation near the grounding <span class="hlt">zone</span> prevents the unambiguous interpretation of this signal in typical echo strength profiles and violates the assumptions of existing empirical attenuation correction techniques. We present a technique that treat <span class="hlt">bed</span> echoes as continuous signals to take advantage of along-profile ice thickness and echo strength variations to constrain the spatial pattern of attenuation and detect the grounding <span class="hlt">zone</span> transition. The transition from an ice-<span class="hlt">bed</span> interface to an ice-ocean interface will also result in a change in the processes that determine basal interface morphology (e</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/19048091','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/19048091"><span>Simulating human space physiology with <span class="hlt">bed</span> rest.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Jost, P D</p> <p>2008-08-01</p> <p>In a recent review on <span class="hlt">bed</span> rest studies of the past 20 years, it was concluded that head-down <span class="hlt">bed</span> rest has proved its usefulness as a reliable simulation model for most physiological effects of spaceflight. Much of this research has been conducted to find countermeasures against the negative effects, which are associated with gravitational unloading. There have been partial successes in the prevention of, for example muscle wasting, cardio-vascular deconditioning, adverse metabolic changes, and bone demineralization. Reviews refer to bone-related measurements of the U.S. and Russian space programmes, as well as data from <span class="hlt">bed</span> rest analogues, and conclude that in spite of the wealth of knowledge obtained thus far, many questions remain regarding bone loss, bone recovery, and the factors affecting these skeletal processes. <span class="hlt">Bed</span> rest research has also direct relevance for medical science on Earth. Valuable data on physiology and early reversible pathological changes that are associated with a sedentary lifestyle on Earth can be obtained. A good example is the conclusion from a metabolic protocol implemented during the 2001/2002 90-day ESA/CNES/NASDA male <span class="hlt">bed</span> rest study. The results of that experiment on fatty acid oxidation suggest that Mediterranean diets should be recommended in recumbent patients. Some other unexpected results obtained during the ESA/NASA/CNES/CSA 60-day female <span class="hlt">bed</span> rest study WISE-2005 may well prompt the development of a treatment for certain cardiac diseases. A nutritional supplement that was designed to alleviate skeletal muscle atrophy turned out to preserve cardiac muscle mass. In order to optimise <span class="hlt">bed</span> rest research, a systematic and standardised approach will be beneficial. During the last years, serious efforts have been made towards such standardisation on an international level. It is expected that results from future studies, combined with in-flight validation, will provide the answers to many biomedical problems that currently limit safe</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/16046091','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/16046091"><span>DNA profiling of trace DNA recovered from <span class="hlt">bedding</span>.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Petricevic, Susan F; Bright, Jo-Anne; Cockerton, Sarah L</p> <p>2006-05-25</p> <p>Trace DNA is often detected on handled items and worn clothing examined in forensic laboratories. In this study, the potential transfer of trace DNA to <span class="hlt">bedding</span> by normal contact, when an individual sleeps in a <span class="hlt">bed</span>, is examined. Volunteers slept one night on a new, lower <span class="hlt">bed</span> sheet in their own <span class="hlt">bed</span> and one night in a <span class="hlt">bed</span> foreign to them. Samples from the sheets were collected and analysed by DNA profiling. The results indicate that the DNA profile of an individual can be obtained from <span class="hlt">bedding</span> after one night of sleeping in a <span class="hlt">bed</span>. The DNA profile of the owner of the <span class="hlt">bed</span> could also be detected in the foreign <span class="hlt">bed</span> experiments. Since mixed DNA profiles can be obtained from trace DNA on <span class="hlt">bedding</span>, caution should be exercised when drawing conclusions from DNA profiling results obtained from such samples. This transfer may have important repercussions in sexual assault investigations.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.fs.usda.gov/treesearch/pubs/7830','TREESEARCH'); return false;" href="https://www.fs.usda.gov/treesearch/pubs/7830"><span>Response of <span class="hlt">bed</span> mobility to sediment supply in natural gravel <span class="hlt">bed</span> channels: A detailed examination and evaluation of mobility parameters</span></a></p> <p><a target="_blank" href="http://www.fs.usda.gov/treesearch/">Treesearch</a></p> <p>T. E. Lisle; J. M. Nelson; B. L. Barkett; J. Pitlick; M. A. Madej</p> <p>1998-01-01</p> <p>Recent laboratory experiments have shown that <span class="hlt">bed</span> mobility in gravel <span class="hlt">bed</span> channels responds to changes in sediment supply, but detailed examinations of this adjustment in natural channels have been lacking, and practical methodologies to measure <span class="hlt">bed</span> mobility have not been tested. We examined six gravel-<span class="hlt">bed</span>, alternate-bar channels which have a wide range in annual...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/5495790','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/5495790"><span>Nature of natural gas in anomalously thick coal <span class="hlt">beds</span>, Powder River basin, Wyoming</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Rice, D.D.; Flores, R.M. )</p> <p>1989-09-01</p> <p>Anomalously thick coal <span class="hlt">beds</span> (as much as 250 ft thick) occur in the Paleocene Tongue River Member of the Fort Union Formation in the Powder River basin, Wyoming. These laterally discontinuous coal <span class="hlt">beds</span> were deposited in raised, ombrotrophic peat bogs of fluvial environments. The coal <span class="hlt">beds</span> include the Anderson-Canyon, Wyodak-Anderson, and Big George <span class="hlt">zones</span> in the Powder River-Recluse area, Gillette area, and central part of the basin, respectively. The coal resources in these areas are approximately 155 billion short tons. The average maceral composition of the coals is 88% huminite (vitrinite), 5% liptinite, and 7% inertinite. The coals vary in rank from subbituminous C to A (R{sub 0} values of 0.4 to 0.5%). Natural gas desorbed and produced from the coal <span class="hlt">beds</span> and adjacent sandstones is composed mainly of methane with lesser amounts of CO{sub 2} (less than 10%). The methane is isotopically light ({delta}{sup 13}C{sup 1} values of {minus}56.7 to {minus}60.9%). Based on the chemical and isotopic composition of the gases and on the low rank of the coals, the gases are interpreted to be microbial in origin: they were generated by anaerobic bacteria that broke down the coals at low temperatures, prior to the main phase of thermogenic methane generation by devolatilization. The adsorbed amounts of methane-rich microbial gas per unit of coal in the Powder River basin are relatively low compared to amounts of thermogenic coal-<span class="hlt">bed</span> gases from other basins. However, the total coal-<span class="hlt">bed</span> gas resource is considered to be large (as much as several trillion cubic feet) because of the vast coal resources.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.fs.usda.gov/treesearch/pubs/33562','TREESEARCH'); return false;" href="https://www.fs.usda.gov/treesearch/pubs/33562"><span>Correction to "A general power equation for predicting <span class="hlt">bed</span> load transport rates in gravel <span class="hlt">bed</span> rivers"</span></a></p> <p><a target="_blank" href="http://www.fs.usda.gov/treesearch/">Treesearch</a></p> <p>Jeffrey J. Barry; John M. Buffington; John G. King</p> <p>2007-01-01</p> <p>In the paper "A general power equation for predicting <span class="hlt">bed</span> load transport rates in gravel <span class="hlt">bed</span> rivers" by Jeffrey J. Barry et al. (Water Resources Research, 40, W10401, doi:10.1029/2004WR003190, 2004), the y axis for Figures 5 and 10 was incorrectly labeled and should have read "log10 (predicted transport) - log10 (observed transport)." In addition,...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2017MS%26E..197a2033B','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2017MS%26E..197a2033B"><span>Thermal Analysis of Fluidized <span class="hlt">Bed</span> and Fixed <span class="hlt">Bed</span> Latent Heat Thermal Storage System</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Beemkumar, N.; Karthikeyan, A.; Shiva Keshava Reddy, Kota; Rajesh, Kona; Anderson, A.</p> <p>2017-05-01</p> <p>Thermal energy storage technology is essential because its stores available energy at low cost. Objective of the work is to store the thermal energy in a most efficient method. This work is deal with thermal analysis of fluidized <span class="hlt">bed</span> and fixed <span class="hlt">bed</span> latent heat thermal storage (LHTS) system with different encapsulation materials (aluminium, brass and copper). D-Mannitol has been used as phase change material (PCM). Encapsulation material which is in orbicular shape with 4 inch diameter and 2 mm thickness orbicular shaped product is used. Therminol-66 is used as a heat transfer fluid (HTF). Arrangement of encapsulation material is done in two ways namely fluidized <span class="hlt">bed</span> and fixed <span class="hlt">bed</span> thermal storage system. Comparison was made between the performance of fixed <span class="hlt">bed</span> and fluidized <span class="hlt">bed</span> with different encapsulation material. It is observed that from the economical point of view aluminium in fluidized <span class="hlt">bed</span> LHTS System has highest efficiency than copper and brass. The thermal energy storage system can be analyzed with fixed <span class="hlt">bed</span> by varying mass flow rate of oil paves a way to find effective heat energy transfer.</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_21");'>21</a></li> <li><a href="#" onclick='return showDiv("page_22");'>22</a></li> <li class="active"><span>23</span></li> <li><a href="#" onclick='return showDiv("page_24");'>24</a></li> <li><a href="#" onclick='return showDiv("page_25");'>25</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_23 --> <div id="page_24" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_21");'>21</a></li> <li><a href="#" onclick='return showDiv("page_22");'>22</a></li> <li><a href="#" onclick='return showDiv("page_23");'>23</a></li> <li class="active"><span>24</span></li> <li><a href="#" onclick='return showDiv("page_25");'>25</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="461"> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2015AGUFMEP21A0890L','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2015AGUFMEP21A0890L"><span><span class="hlt">Bed</span> Stability and Debris Flow Erosion: A Dynamic "Shields Criterion" Associated with <span class="hlt">Bed</span> Structure</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Longjas, A.; Hill, K. M.</p> <p>2015-12-01</p> <p>Debris flows are mass movements that play an important role in transporting sediment from steep uplands to rivers at lower slopes. As the debris flow moves downstream, it entrains materials such as loose boulders, gravel, sand and mud deposited locally by shorter flows such as slides and rockfalls. To capture the conditions under which debris flows entrain <span class="hlt">bed</span> sediment, some models use something akin to the Shields' criterion and an excess shear stress of the flow. However, these models typically neglect granular-scale effects in the <span class="hlt">bed</span> which can modify the conditions under which a debris flow is erosional or depositional. For example, it is well known that repeated shearing causes denser packing in loose dry soils, which undoubtedly changes their resistance to shear. Here, we present laboratory flume experiments showing that the conditions for entrainment by debris flows is significantly dependent on the aging of an erodible <span class="hlt">bed</span> even for narrowly distributed spherical particles. We investigate this quantitatively using particle tracking measurements to quantify instantaneous erosion rates and the evolving <span class="hlt">bed</span> structure or "fabric". With progressive experiments we find a signature that emerges in the <span class="hlt">bed</span> fabric that is correlated with an increasing apparent "fragility" of the <span class="hlt">bed</span>. Specifically, a system that is originally depositional may become erosional after repeated debris flow events, and an erodible <span class="hlt">bed</span> becomes increasingly erodible with repeated flows. We hypothesize that related effects of <span class="hlt">bed</span> aging at the field scale may be partly responsible for the increasing destructiveness of secondary flows of landslides and debris flows.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2010pot..book..712K','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2010pot..book..712K"><span>Application of CaO-Based <span class="hlt">Bed</span> Material for Dual Fluidized <span class="hlt">Bed</span> Steam Biomass Gasification</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Koppatz, S.; Pfeifer, C.; Kreuzeder, A.; Soukup, G.; Hofbauer, H.</p> <p></p> <p>Gasification of biomass is a suitable option for decentralized energy supply based on renewable sources in the range of up to 50 MW fuel input. The paper presents the dual fluidized <span class="hlt">bed</span> (DFB) steam gasification process, which is applied to generate high quality and nitrogen-free product gas. Essential part of the DFB process is the <span class="hlt">bed</span> material used in the fluidized reactors, which has significant impact on the product gas quality. By the use of catalytically active <span class="hlt">bed</span> materials the performance of the overall process is increased, since the <span class="hlt">bed</span> material favors reactions of the steam gasification. In particular, tar reforming reactions are favored. Within the paper, the pilot plant based on the DFB process with 100kW fuel input at Vienna University of Technology, Austria is presented. Actual investigations with focus on CaO-based <span class="hlt">bed</span> materials (limestone) as well as with natural olivine as <span class="hlt">bed</span> material were carried out at the pilot plant. The application of CaO-based <span class="hlt">bed</span> material shows mainly decreased tar content in the product gas in contrast to experiments with olivine as <span class="hlt">bed</span> material. The paper presents the results of steam gasification experiments with limestone and olivine, whereby the product gas composition as well as the tar content and the tar composition are outlined.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=2862168','PMC'); return false;" href="https://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=2862168"><span>C. elegans <span class="hlt">BED</span> domain transcription factor <span class="hlt">BED</span>-3 controls lineage-specific cell proliferation during organogenesis</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pmc">PubMed Central</a></p> <p>Inoue, Takao; Sternberg, Paul W.</p> <p>2010-01-01</p> <p>The control of cell division is critical to organogenesis, but how this control is achieved is not fully understood. We found that mutations in <span class="hlt">bed</span>-3, encoding a <span class="hlt">BED</span> Zn-finger domain transcription factor, confer a phenotype where a specific set of cell divisions during vulval organogenesis is lost. Unlike general cell cycle regulators in C. elegans, the function of <span class="hlt">bed</span>-3 is restricted to specific lineages. Transcriptional reporters suggest that <span class="hlt">bed</span>-3 is expressed in a limited number of cell types including vulval cells whose divisions are affected in <span class="hlt">bed</span>-3 mutants. A <span class="hlt">bed</span>-3 mutation also affects the expression pattern of the cdh-3 cadherin gene in the vulva. The phenotype of <span class="hlt">bed</span>-3 mutants is similar to the phenotype caused by mutations in cog-1 (Nkx6), a component of a gene regulatory network controlling cell type specific gene expression in the vulval lineage. These results suggest that <span class="hlt">bed</span>-3 is a key component linking the gene regulatory network controlling cell-type specification to control of cell division during vulval organogenesis. PMID:20005870</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.fs.usda.gov/treesearch/pubs/23865','TREESEARCH'); return false;" href="https://www.fs.usda.gov/treesearch/pubs/23865"><span>Performance of <span class="hlt">bed</span> load transport equations in mountain gravel-<span class="hlt">bed</span> rivers: A re-analysis</span></a></p> <p><a target="_blank" href="http://www.fs.usda.gov/treesearch/">Treesearch</a></p> <p>Jeffrey J. Barry; John M. Buffington; John G. King; Peter Goodwin</p> <p>2006-01-01</p> <p>Our recent examination of <span class="hlt">bed</span> load transport data from mountain gravel-<span class="hlt">bed</span> rivers in the western United States shows that the data can be fit by a simple power function of discharge, with the coefficient being a function of drainage area (a surrogate for basin sediment supply) and the exponent being a function of supply-related channel armoring (transport capacity in...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/863447','DOE-PATENT-XML'); return false;" href="http://www.osti.gov/scitech/servlets/purl/863447"><span>Coal fired fluid <span class="hlt">bed</span> module for a single elevation style fluid <span class="hlt">bed</span> power plant</span></a></p> <p><a target="_blank" href="http://www.osti.gov/doepatents">DOEpatents</a></p> <p>Waryasz, Richard E.</p> <p>1979-01-01</p> <p>A fluidized <span class="hlt">bed</span> for the burning of pulverized fuel having a specific waterwall arrangement that comprises a structurally reinforced framework of wall tubes. The wall tubes are reversely bent from opposite sides and then bonded together to form tie rods that extend across the <span class="hlt">bed</span> to support the lateral walls thereof.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/20030066364','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/20030066364"><span>Monolithic Hydrogen Peroxide Catalyst <span class="hlt">Bed</span> Development</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Ponzo, J. B.</p> <p>2003-01-01</p> <p>With recent increased industry and government interest in rocket grade hydrogen peroxide as a viable propellant, significant effort has been expended to improve on earlier developments. This effort has been predominately centered in improving heterogeneous. typically catalyst <span class="hlt">beds</span>; and homogeneous catalysts, which are typically solutions of catalytic substances. Heterogeneous catalyst <span class="hlt">beds</span> have traditionally consisted of compressed wire screens plated with a catalytic substance, usually silver, and were used m many RCS applications (X-1, Mercury, and Centaur for example). Aerojet has devised a heterogeneous catalyst design that is monolithic (single piece), extremely compact, and has pressure drops equal to or less than traditional screen <span class="hlt">beds</span>. The design consists of a bonded stack of very thin, photoetched metal plates, silver coated. This design leads to a high surface area per unit volume and precise flow area, resulting in high, stable, and repeatable performance. Very high throughputs have been demonstrated with 90% hydrogen peroxide. (0.60 lbm/s/sq in at 1775-175 psia) with no flooding of the catalyst <span class="hlt">bed</span>. <span class="hlt">Bed</span> life of over 900 seconds has also been demonstrated at throughputs of 0.60 lbm/s/sq in across varying chamber pressures. The monolithic design also exhibits good starting performance, short break-in periods, and will easily scale to various sizes.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2008AGUFM.H53C1082H','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2008AGUFM.H53C1082H"><span>Grain Exchange Probabilities Within a Gravel <span class="hlt">Bed</span></span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Haschenburger, J.</p> <p>2008-12-01</p> <p>Sediment transfers in gravel-<span class="hlt">bed</span> rivers involve the vertical exchange of sediments during floods. These exchanges regulate the virtual velocity of sediment and <span class="hlt">bed</span> material texture. This study describes general tendencies in the vertical exchange of gravels within the substrate that result from multiple floods. Empirical observations come from Carnation Creek, a small gravel-<span class="hlt">bed</span> river with large woody debris located on the west coast of Vancouver Island, British Columbia. Frequent floods and the relatively limited armor layer facilitate streambed activity and relatively high bedload transport rates, typically under partial sediment transport conditions. Over 2000 magnetically tagged stones, ranging in size from 16 to 180 mm, were deployed on the <span class="hlt">bed</span> surface between 1991 and 1992. These tracers have been recovered 10 times over 12 flood seasons to quantify their vertical position in the streambed. For analysis, the <span class="hlt">bed</span> is divided into layers based on armor layer thickness. Once tracers are well mixed within the streambed, grains in the surface layer are most likely to be mixed into the subsurface, while subsurface grains are most likely to persist within the subsurface. Fractional exchange probabilities approach size independence when the most active depth of the substrate is considered. Overall these results highlight vertical mixing as an important process in the dispersion of gravels.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/20006755','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/20006755"><span>An innovative vibration fluidized <span class="hlt">bed</span> ash cooler</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Duan, Y.; Zhang, M.; Liu, A.; Yao, Z.; Tang, H.; Liu, Q.</p> <p>1999-07-01</p> <p>With the ever-increasing versatility, scaling up and commercialization of coal-fired fluidized <span class="hlt">bed</span> boiler technologies, it has become more and more important to improve the technique of draining <span class="hlt">bed</span> ash from bubbling or circulating fluidized <span class="hlt">bed</span> boilers. Choosing an ash cooler is a good way but highly stable and reliable system is hard to find for a massive ash flow rate having a broad particle size distributions. An innovative technique known as Vibration Fluidized <span class="hlt">Bed</span> Ash Cooler (VFBAC) is proposed in this paper. It can drain bottom ash at a high temperature from FB or CFB boilers continuously and controllably. In this device, air used for cooling can be used as combustion-aided air or coal spreading air. The hot ash is cooled by the air to a temperature which it can be transported easily and safely by conventional technology. Meanwhile, an industrial apparatus utilizing the new technology was manufactured and used in a 35 t/h bubbling FB boiler. For the purpose of detecting residence time distribution of wide-sieved <span class="hlt">bed</span> materials in this ash cooler systematically, advantage was taken of a new approach for physical quality discrimination. Investigations into the hydrodynamic characteristics of the gas-solid two-phase flows and theoretical analyses on hot operational performance were carried out. The results show that heat recovery efficiency of the ash cooler reaches 85% greater when operating at a ratio of air to ash of 1.5{approximately}2.5 Nm{sup 3}/kg.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/6987869','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/6987869"><span>The thermal conductivity of <span class="hlt">beds</span> of spheres</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>McElroy, D.L.; Weaver, F.J.; Shapiro, M.; Longest, A.W.; Yarbrough, D.W.</p> <p>1987-01-01</p> <p>The thermal conductivities (k) of <span class="hlt">beds</span> of solid and hollow microspheres were measured using two radial heat flow techniques. One technique provided k-data at 300 K for <span class="hlt">beds</span> with the void spaces between particles filled with argon, nitrogen, or helium from 5 kPa to 30 MPa. The other technique provided k-data with air at atmospheric pressure from 300 to 1000 K. The 300 K technique was used to study <span class="hlt">bed</span> systems with high k-values that can be varied by changing the gas type and gas pressure. Such systems can be used to control the operating temperature of an irradiation capsule. The systems studied included <span class="hlt">beds</span> of 500 ..mu..m dia solid Al/sub 2/O/sub 3/, the same Al/sub 2/O/sub 3/ spheres mixed with spheres of silica--alumina or with SiC shards, carbon spheres, and nickel spheres. Both techniques were used to determine the k-value of <span class="hlt">beds</span> of hollow spheres with solid shells of Al/sub 2/O/sub 3/, Al/sub 2/O/sub 3//center dot/7 w/o Cr/sub 2/O/sub 3/, and partially stabilized ZrO/sub 2/. The hollow microspheres had diameters from 2100 to 3500 ..mu..m and wall thicknesses from 80 to 160 ..mu..m. 12 refs., 7 figs., 4 tabs.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/6249277','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/6249277"><span>Paleokarstic phenomena of the Lower Ordovician red <span class="hlt">bed</span> sequences of the Arbuckle group, southern Oklahoma</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Musselman, J.L. )</p> <p>1991-06-01</p> <p>Oil and gas production has been reported recently from paleokarstic Arbuckle reservoirs in the Ardmore and Arkoma basin. The West Spring Creek and the Kindblade formations apparently exhibit karstic features. The most extensive surface exposure of these formations is on the southern flank of the Arbuckle anticline along Interstate 35 north of Ardmore, Oklahoma. The lithology is predominantly limestone, ranging from argillaceous mudstone to oolitic and/or bioclastic grainstones. However, minor amounts of sandstone were also observed.These lithologies are characteristic of various peritidal facies. Of particular interest in this outcrop are three distinct red <span class="hlt">bed</span> <span class="hlt">zones</span>. Although the <span class="hlt">zones</span> are part of the repetitive shallowing-upward cycles that characterize the West Spring Creek Formation, ample evidence suggests the red <span class="hlt">beds</span> represent subaerial exposure surfaces where karstification took place. Many of the thin <span class="hlt">bedded</span>, rubbly mudstones and wackestones actually represent varieties of breccia commonly associated with karst. Collapse and crackle breccia are most commonly observed. Small solution channels and other vugs are usually completely occluded by calcite cement. However, solution cavities or vugs with diameters larger than 10 cm (3.9 in.) are lined with drusy calcite. Hematite-impregnated sediment occurs as thinly laminated infilling of solution vugs and cavities and also acts as a cementing agent of collapse breccias. Preliminary evidence suggests that karstification processes were active during Arbuckle deposition.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/5846800','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/5846800"><span>Fracture analysis: Methods and applications to coal-<span class="hlt">bed</span> methane and Devonian shale</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Lottman-Craig, L. ); Malone, P. )</p> <p>1991-08-01</p> <p>When used exclusively, conventional remote sensing inadequately defines underground fracture systems for detailed study areas. A combination of mapping surface joint features and interpretation of remote sensing data provides an improved method of identifying ones of higher fracture intensity. Identification of these <span class="hlt">zones</span> defines optimal location and spacing of coal-<span class="hlt">bed</span> methane wells and interpretation of production trends. Although developed for the coal-<span class="hlt">bed</span> methane industry, this fracture analysis has other applications including the evaluation of Devonian shales. To consistently define linear features and joint patterns, a method has been developed to define them. The linear study consists of interpreting and classifying linears from a variety of remote sensing imagery, including low-altitude photos, SLAR, high altitude, and thematic mapper. The resulting fracture analysis uses data from both the joint field mapping program and the linear study. Detailed study of production trends vs. fracture <span class="hlt">zones</span> in the Oak Grove degas field of Alabama confirmed the importance of structure; wells connected to fracture systems yielded higher production. Although data obtained from the Oak Grove degas field established the existence of subsurface communication between seams via fracture systems, extensive field mapping reveals fracture avenues from subsurface coal seams to the surface. The evidence for this is continuous streams of methane bubbles observed in water in creek <span class="hlt">beds</span>.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/17849300','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/17849300"><span>Modeling and fixed <span class="hlt">bed</span> column adsorption of As(V) on laterite soil.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Maji, Sanjoy K; Pal, Anjali; Pal, Tarasankar; Adak, Asok</p> <p>2007-09-01</p> <p>Laterite soil, an abundant locally available natural adsorbent, has been evaluated for As(V) removal from aqueous solutions in column mode operation. The column studies were conducted using columns of 10, 20, 30 cm <span class="hlt">bed</span> depth with 2 cm internal diameter. Initial As(V) concentration was 0.5 mg/L and flow rate was 7.75 mL/min. Bohart and Adams sorption model was employed for the determination of different parameters like height of exchange <span class="hlt">zone</span>, adsorption rate, time required for exchange <span class="hlt">zone</span> to move, and the adsorption capacity. Effect of flow rate and initial concentration was studied. The adsorption capacity of the laterite soil for 0.5 mg/L of As(V) was found to be 62.32 mg/L, and the adsorption rate constant was 1.0911 L/mg h for the minimum <span class="hlt">bed</span> depth of 8.47 cm. The column was designed by the BDST model. Freundlich isotherm model was used to compare the theoretical and experimental breakthrough profile in the dynamic process. The <span class="hlt">bed</span> saturation obtained was 36-80%. Regeneration of the exhausted column was possible with 1M NaOH.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2016MeScT..27k5601J','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2016MeScT..27k5601J"><span>Measurement of powder <span class="hlt">bed</span> density in powder <span class="hlt">bed</span> fusion additive manufacturing processes</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Jacob, G.; Donmez, A.; Slotwinski, J.; Moylan, S.</p> <p>2016-11-01</p> <p>Many factors influence the performance of additive manufacturing (AM) processes, resulting in a high degree of variation in process outcomes. Therefore, quantifying these factors and their correlations to process outcomes are important challenges to overcome to enable widespread adoption of emerging AM technologies. In the powder <span class="hlt">bed</span> fusion AM process, the density of the powder layers in the powder <span class="hlt">bed</span> is a key influencing factor. This paper introduces a method to determine the powder <span class="hlt">bed</span> density (PBD) during the powder <span class="hlt">bed</span> fusion (PBF) process. A complete uncertainty analysis associated with the measurement method was also described. The resulting expanded measurement uncertainty, U PBD (k  =  2), was determined as 0.004 g · cm-3. It was shown that this expanded measurement uncertainty is about three orders of magnitude smaller than the typical powder <span class="hlt">bed</span> density. This method enables establishing correlations between the changes in PBD and the direction of motion of the powder recoating arm.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/10146316','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/10146316"><span><span class="hlt">Bed</span> material agglomeration during fluidized <span class="hlt">bed</span> combustion. Technical progress report, September 30, 1992--December 31, 1992</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Brown, R.C.; Dawson, M.R.; Noble, S.</p> <p>1993-02-01</p> <p>The purpose of this project is to determine the physical and chemical reactions which led to the undesired agglomeration of <span class="hlt">bed</span> material during fluidized <span class="hlt">bed</span> combustion and to relate these reactions to specific causes. Survey of industrial-scale fluidized <span class="hlt">bed</span> combustors is being conducted to determine the occurrence of <span class="hlt">bed</span> agglomeration and the circumstances under which agglomeration took place. This task should be finished by the end of February. Samples of <span class="hlt">bed</span> material, agglomerate material, and boiler deposits are being requested from boiler operators as part of the survey. Once received, these sample will be analyzed to determine chemical and mineralogic composition. The bulk chemical determination will be performed using x-ray fluorescence and inductively coupled plasma-optical emission (ICP). Mineralogy will be detected by x-ray diffraction (XRD). Chemical and mineral reactions will be determined by scanning electron microscopy, optical microscopy, and electron microprobe.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2017EGUGA..1915369B','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2017EGUGA..1915369B"><span>Hydrodynamics of concordant and discordant fixed <span class="hlt">bed</span> open-channel confluences</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Birjukova Canelas, Olga; Lage Ferreira, Rui Miguel; Heleno Cardoso, António</p> <p>2017-04-01</p> <p>The detailed characterization of the flow field in river confluences constitutes a relevant step towards the understanding of the hydro-morpho-dynamics of these key <span class="hlt">zones</span> of the fluvial system. With a few exceptions, existing works on this topic covered concordant <span class="hlt">bed</span> scenarios, meaning that both confluent channels had the same elevation. This laboratory study aims to contribute to a detailed three-dimensional characterization of the flow field at a fixed <span class="hlt">bed</span> confluence, as well as to shed light on how <span class="hlt">bed</span> elevation discordance modifies the flow patterns of the converging flows. While the junction angle and the discharge ratio were kept fixed, two scenarios were studied on the basis of detailed water level and 3D ADV measurements at the denser mesh ever. The internal flow structure of the concordant <span class="hlt">bed</span> scenario mostly complied with the classical conceptual models. A relevant difference concerns the size of the stagnation <span class="hlt">zone</span>, much smaller close to the <span class="hlt">bed</span> of the discordant <span class="hlt">bed</span> confluence. A more significant difference is a horizontal flow structure, not previously identified in the literature, characterized by strong streamwise mean vorticity and strong secondary motion. It is observed for the discordant <span class="hlt">bed</span> case, occurring along the inner wall of the main channel and downstream the junction corner. This structure is spatially well-correlated to a pronounced imbalance of cross-stream and vertical normal Reynolds stresses. This highlights the role of Reynolds stress anisotropy (RSA) that is generated in the shear layers than accompany the entrance of the tributary flow. Since this structure is not present in the concordant case, where RSA is also evident, it is argued that convective effects should also play a role in its formation, presumably due to deflection of the flow in the main channel by the tributary. The newly identified secondary motion should, thus, be a combination of Prandtĺs second kind and Prandtĺs first kind of secondary flow. The relative</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/864090','DOE-PATENT-XML'); return false;" href="http://www.osti.gov/scitech/servlets/purl/864090"><span>Particle withdrawal from fluidized <span class="hlt">bed</span> systems</span></a></p> <p><a target="_blank" href="http://www.osti.gov/doepatents">DOEpatents</a></p> <p>Salvador, Louis A.; Andermann, Ronald E.; Rath, Lawrence K.</p> <p>1982-01-01</p> <p>Method and apparatus for removing ash formed within, and accumulated at the lower portion of, a fluidized <span class="hlt">bed</span> coal gasification reactor vessel. A supplemental fluidizing gas, at a temperature substantially less than the average fluidized <span class="hlt">bed</span> combustion operating temperature, is injected into the vessel and upwardly through the ash so as to form a discrete thermal interface region between the fluidized <span class="hlt">bed</span> and the ash. The elevation of the interface region, which rises with ash accumulation, is monitored by a thermocouple and interrelated with a motor controlled outlet valve. When the interface rises above the temperature indicator, the valve opens to allow removal of some of the ash, and the valve is closed, or positioned at a minimum setting, when the interface drops to an elevation below that of the thermocouple.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=1065511','PMC'); return false;" href="https://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=1065511"><span>A multistage model of hospital <span class="hlt">bed</span> requirements.</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pmc">PubMed Central</a></p> <p>Pendergast, J F; Vogel, W B</p> <p>1988-01-01</p> <p>This article presents a model for projecting future hospital <span class="hlt">bed</span> requirements, based on clinical judgment and basic probability theory. Clinical judgment is used to define various categories of care, including a category for patients who are inappropriately hospitalized, for a large teaching hospital with a heavy indigent and psychiatric workload. Survey results and discharge abstract data are then used to calculate expected discharges and patient days for each clinical category. These expected discharges and patient days are converted into estimated <span class="hlt">bed</span> requirements using a simple deterministic equation. Results of this multistage model are compared with the results obtained from exercising the simple deterministic equation alone. Because the multistage model removes patients from the hospital if they are deemed inappropriately placed, this model results in the projection of 5.1 percent fewer hospital <span class="hlt">beds</span> than the simple deterministic equation alone. PMID:3403276</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/6799522','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/6799522"><span>SYNROC production using a fluid <span class="hlt">bed</span> calciner</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Ackerman, F.J.; Grens, J.Z.; Ryerson, F.J.; Hoenig, C.L.; Bazan, F.; Campbell, J.H.</p> <p>1982-09-27</p> <p>SYNROC is a titanate-based ceramic developed for immobilization of high-level nuclear reactor wastes in solid form. Fluid-<span class="hlt">bed</span> SYNROC production permits slurry drying, calcining and redox to be carried out in a single unit. We present results of studies from two fluid <span class="hlt">beds</span>; the Idaho Exxon internally-heated unit and the externally-heated unit constructed at Lawrence Livermore National laboratory. <span class="hlt">Bed</span> operation over a range of temperature, feed rate, fluidizing rate and redox conditions indicate that high density, uniform particle-size SYNROC powders are produced which facilitate the densification step and give HUP parts with dense, well-developed phases and good leaching characteristics. 3 figures, 3 tables.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19980227041','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19980227041"><span>FPGA Based Reconfigurable ATM Switch Test <span class="hlt">Bed</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Chu, Pong P.; Jones, Robert E.</p> <p>1998-01-01</p> <p>Various issues associated with "FPGA Based Reconfigurable ATM Switch Test <span class="hlt">Bed</span>" are presented in viewgraph form. Specific topics include: 1) Network performance evaluation; 2) traditional approaches; 3) software simulation; 4) hardware emulation; 5) test <span class="hlt">bed</span> highlights; 6) design environment; 7) test <span class="hlt">bed</span> architecture; 8) abstract sheared-memory switch; 9) detailed switch diagram; 10) traffic generator; 11) data collection circuit and user interface; 12) initial results; and 13) the following conclusions: Advances in FPGA make hardware emulation feasible for performance evaluation, hardware emulation can provide several orders of magnitude speed-up over software simulation; due to the complexity of hardware synthesis process, development in emulation is much more difficult than simulation and requires knowledge in both networks and digital design.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/832863','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/832863"><span>Control of a Circulating Fluidized <span class="hlt">Bed</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Shim, Hoowang; Rickards, Gretchen; Famouri, Parviz; Turton, Richard; Sams, W. Neal; Koduro, Praveen; Patankar, Amol; Davari, Assad; Lawson, Larry; Boyle, Edward J.</p> <p>2001-11-06</p> <p>Two methods for optimally controlling the operation of a circulating fluidized <span class="hlt">bed</span> are being investigated, neural network control and Kalman filter control. The neural network controls the solids circulation rate by adjusting the flow of move air in the non-mechanical valve. Presented is the method of training the neural network from data generated by the circulating fluidized <span class="hlt">bed</span> (CFB), the results of a sensitivity study indicating that adjusting the move air can control solids flow, and the results of controlling solids circulation rate. The Kalman filter approach uses a dynamic model and a measurement model of the standpipe section of the CFB. Presented are results showing that a Kalman filter can successfully find the standpipe <span class="hlt">bed</span> height.</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_21");'>21</a></li> <li><a href="#" onclick='return showDiv("page_22");'>22</a></li> <li><a href="#" onclick='return showDiv("page_23");'>23</a></li> <li class="active"><span>24</span></li> <li><a href="#" onclick='return showDiv("page_25");'>25</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_24 --> <div id="page_25" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_21");'>21</a></li> <li><a href="#" onclick='return showDiv("page_22");'>22</a></li> <li><a href="#" onclick='return showDiv("page_23");'>23</a></li> <li><a href="#" onclick='return showDiv("page_24");'>24</a></li> <li class="active"><span>25</span></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="481"> <li> <p><a target="_blank" onclick="trackOutboundLink('http://pubs.er.usgs.gov/publication/70013202','USGSPUBS'); return false;" href="http://pubs.er.usgs.gov/publication/70013202"><span>New approach to calibrating <span class="hlt">bed</span> load samplers</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Hubbell, D.W.; Stevens, H.H.; Skinner, J.V.; Beverage, J.P.</p> <p>1985-01-01</p> <p>Cyclic variations in <span class="hlt">bed</span> load discharge at a point, which are an inherent part of the process of <span class="hlt">bed</span> load movement, complicate calibration of <span class="hlt">bed</span> load samplers and preclude the use of average rates to define sampling efficiencies. Calibration curves, rather than efficiencies, are derived by two independent methods using data collected with prototype versions of the Helley‐Smith sampler in a large calibration facility capable of continuously measuring transport rates across a 9 ft (2.7 m) width. Results from both methods agree. Composite calibration curves, based on matching probability distribution functions of samples and measured rates from different hydraulic conditions (runs), are obtained for six different versions of the sampler. Sampled rates corrected by the calibration curves agree with measured rates for individual runs.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://pubs.er.usgs.gov/publication/70031356','USGSPUBS'); return false;" href="http://pubs.er.usgs.gov/publication/70031356"><span>Field assessment of alternative <span class="hlt">bed</span>-load transport estimators</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Gaeuman, G.; Jacobson, R.B.</p> <p>2007-01-01</p> <p>Measurement of near-<span class="hlt">bed</span> sediment velocities with acoustic Doppler current profilers (ADCPs) is an emerging approach for quantifying <span class="hlt">bed</span>-load sediment fluxes in rivers. Previous investigations of the technique have relied on conventional physical <span class="hlt">bed</span>-load sampling to provide reference transport information with which to validate the ADCP measurements. However, physical samples are subject to substantial errors, especially under field conditions in which surrogate methods are most needed. Comparisons between ADCP <span class="hlt">bed</span> velocity measurements with <span class="hlt">bed</span>-load transport rates estimated from <span class="hlt">bed</span>-form migration rates in the lower Missouri River show a strong correlation between the two surrogate measures over a wide range of mild to moderately intense sediment transporting conditions. The correlation between the ADCP measurements and physical <span class="hlt">bed</span>-load samples is comparatively poor, suggesting that physical <span class="hlt">bed</span>-load sampling is ineffective for ground-truthing alternative techniques in large sand-<span class="hlt">bed</span> rivers. <span class="hlt">Bed</span> velocities measured in this study became more variable with increasing <span class="hlt">bed</span>-form wavelength at higher shear stresses. Under these conditions, <span class="hlt">bed</span>-form dimensions greatly exceed the region of the <span class="hlt">bed</span> ensonified by the ADCP, and the magnitude of the acoustic measurements depends on instrument location with respect to <span class="hlt">bed</span>-form crests and troughs. Alternative algorithms for estimating <span class="hlt">bed</span>-load transport from paired longitudinal profiles of <span class="hlt">bed</span> topography were evaluated. An algorithm based on the routing of local erosion and deposition volumes that eliminates the need to identify individual <span class="hlt">bed</span> forms was found to give results similar to those of more conventional dune-tracking methods. This method is particularly useful in cases where complex <span class="hlt">bed</span>-form morphology makes delineation of individual <span class="hlt">bed</span> forms difficult. ?? 2007 ASCE.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/17706422','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/17706422"><span>Combustion characteristics of different parts of corn straw and NO formation in a fixed <span class="hlt">bed</span>.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Zhao, Wei; Li, Zhengqi; Wang, Dawei; Zhu, Qunyi; Sun, Rui; Meng, Baihong; Zhao, Guangbo</p> <p>2008-05-01</p> <p>Experiments with five samples of corn straw were carried out on a one-dimensional bench combustion test rig. The <span class="hlt">bed</span> temperature distribution and the mass loss of fuel and gas components such as O2, CO, CO2 and NO were measured in the <span class="hlt">bed</span>. The combustion of corn straw occurred in two stages, ignition front propagation and char oxidation. The average burning rate increased with an increase in the primary air flow until a critical point was reached, beyond which a further increase in the primary air flow resulted in a decreased burning rate. The mean concentration of NO reached a minimum value and then increased with increased primary air flow. The time taken for the drying front to reach the bottom of the <span class="hlt">bed</span> was 800 s, 700 s, and 500 s; the temperatures in the high <span class="hlt">bed</span> temperature <span class="hlt">zones</span> were 900-935 degrees C, 800-850 degrees C and 700-743 degrees C; and the maximum concentrations of NO were 725 ppmv, 1287 ppmv, and 2730 ppmv, for whole corn stalks, hollow corn stalks and flaked corn stalks, respectively. The maximum concentrations of CO and NO were quite different between samples. There was only one peak in the distribution of NO concentration for sample B, but there were two peaks for whole corn stalks and sample A.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/17897779','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/17897779"><span>Fixed <span class="hlt">bed</span> column study for heavy metal removal using phosphate treated rice husk.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Mohan, S; Sreelakshmi, G</p> <p>2008-05-01</p> <p>This paper reports the results of the study on the performance of low-cost adsorbent such as raw rice husk (RRH) and phosphate treated rice husk (PRH) in removing the heavy metals such as lead, copper, zinc and manganese. The adsorbent materials adopted were found to be an efficient media for the removal of heavy metals in continuous mode using fixed <span class="hlt">bed</span> column. The column studies were conducted with 10 mg/l of individual and combined metal solution with a flow rate of 20 ml/min with different <span class="hlt">bed</span> depths such as 10, 20 and 30 cm. The breakthrough time was also found to increase from 1.3 to 3.5 h for Pb(II), 4.0 to 9.0 h for Cu(II), 12.5 to 25.4h for Zn(II) and 3.0 to 11.3 h for Mn(II) with increase in <span class="hlt">bed</span> height from 10 to 30 cm for PRH. Different column design parameters like depth of exchange <span class="hlt">zone</span>, adsorption rate, adsorption capacity, etc. were calculated. It is found that the adsorption capacity and adsorption rate constant were increased and the minimum column <span class="hlt">bed</span> depth required was reduced when the rice husk is treated with phosphate, when compared with that of RRH.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://hdl.handle.net/2060/19940006719','NASA-TRS'); return false;" href="http://hdl.handle.net/2060/19940006719"><span>Exercise countermeasures for <span class="hlt">bed</span>-rest deconditioning</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Greenleaf, John (Editor)</p> <p>1993-01-01</p> <p>The purpose for this 30-day <span class="hlt">bed</span> rest study was to investigate the effects of short-term, high intensity isotonic and isokinetic exercise training on maintenance of working capacity (peak oxygen uptake), muscular strength and endurance, and on orthostatic tolerance, posture and gait. Other data were collected on muscle atrophy, bone mineralization and density, endocrine analyses concerning vasoactivity and fluid-electrolyte balance, muscle intermediary metabolism, and on performance and mood of the subjects. It was concluded that: The subjects maintained a relatively stable mood, high morale, and high esprit de corps throughout the study. Performance improved in nearly all tests in almost all the subjects. Isotonic training, as opposed to isokinetic exercise training, was associated more with decreasing levels of psychological tension, concentration, and motivation; and improvement in the quality of sleep. Working capacity (peak oxygen uptake) was maintained during <span class="hlt">bed</span> rest with isotonic exercise training; it was not maintained with isokinetic or no exercise training. In general, there was no significant decrease in strength or endurance of arm or leg muscles during <span class="hlt">bed</span> rest, in spite of some reduction in muscle size (atrophy) of some leg muscles. There was no effect of isotonic exercise training on orthostasis, since tilt-table tolerance was reduced similarly in all three groups following <span class="hlt">bed</span> rest. <span class="hlt">Bed</span> rest resulted in significant decreases of postural stability and self-selected step length, stride length, and walking velocity, which were not influenced by either exercise training regimen. Most pre-<span class="hlt">bed</span> rest responses were restored by the fourth day of recovery.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.osti.gov/scitech/biblio/22098535','SCIGOV-STC'); return false;" href="https://www.osti.gov/scitech/biblio/22098535"><span>Aperture modulated, translating <span class="hlt">bed</span> total body irradiation</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Hussain, Amjad; Villarreal-Barajas, Jose Eduardo; Dunscombe, Peter; Brown, Derek W.</p> <p>2011-02-15</p> <p>Purpose: Total body irradiation (TBI) techniques aim to deliver a uniform radiation dose to a patient with an irregular body contour and a heterogeneous density distribution to within {+-}10% of the prescribed dose. In the current article, the authors present a novel, aperture modulated, translating <span class="hlt">bed</span> TBI (AMTBI) technique that produces a high degree of dose uniformity throughout the entire patient. Methods: The radiation beam is dynamically shaped in two dimensions using a multileaf collimator (MLC). The irregular surface compensation algorithm in the Eclipse treatment planning system is used for fluence optimization, which is performed based on penetration depth and internal inhomogeneities. Two optimal fluence maps (AP and PA) are generated and beam apertures are created to deliver these optimal fluences. During treatment, the patient/phantom is translated on a motorized <span class="hlt">bed</span> close to the floor (source to <span class="hlt">bed</span> distance: 204.5 cm) under a stationary radiation beam with 0 deg. gantry angle. The <span class="hlt">bed</span> motion and dynamic beam apertures are synchronized. Results: The AMTBI technique produces a more homogeneous dose distribution than fixed open beam translating <span class="hlt">bed</span> TBI. In phantom studies, the dose deviation along the midline is reduced from 10% to less than 5% of the prescribed dose in the longitudinal direction. Dose to the lung is reduced by more than 15% compared to the unshielded fixed open beam technique. At the lateral body edges, the dose received from the open beam technique was 20% higher than that prescribed at umbilicus midplane. With AMTBI the dose deviation in this same region is reduced to less than 3% of the prescribed dose. Validation of the technique was performed using thermoluminescent dosimeters in a Rando phantom. Agreement between calculation and measurement was better than 3% in all cases. Conclusions: A novel, translating <span class="hlt">bed</span>, aperture modulated TBI technique that employs dynamically shaped MLC defined beams is shown to improve dose uniformity</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.osti.gov/scitech/servlets/purl/1169250','SCIGOV-STC'); return false;" href="http://www.osti.gov/scitech/servlets/purl/1169250"><span>Phase 1 Methyl Iodide Deep-<span class="hlt">Bed</span> Adsorption Tests</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Soelberg, Nick; Watson, Tony</p> <p>2014-08-22</p> <p> are soluble in NaOH scrubbing solution for iodine analysis. But when NOx and H2O are not present, then the majority of the uncaptured iodine exiting iodine-laden sorbent is in the form of methyl iodide. Methyl iodide adsorption efficiencies have been high enough so that initial DFs exceed 1,000 to 10,000. The methyl iodide mass transfer <span class="hlt">zone</span> depths are estimated at 4-8 inches, possibly deeper than mass transfer <span class="hlt">zone</span> depths estimated for I2 adsorption on AgZ. Additional deep-<span class="hlt">bed</span> testing and analyses are recommended to (a) expand the data base for methyl iodide adsorption under various conditions specified in the methyl iodide test plan, and (b) provide more data for evaluating organic iodide reactions and reaction byproducts for different potential adsorption conditions.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=4494331','PMC'); return false;" href="https://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=4494331"><span>Loading and Unloading Finishing Pigs: Effects of <span class="hlt">Bedding</span> Types, Ramp Angle, and <span class="hlt">Bedding</span> Moisture</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pmc">PubMed Central</a></p> <p>Garcia, Arlene; McGlone, John J.</p> <p>2014-01-01</p> <p>Simple Summary Current guidelines suggest the use of ramps below 20 degrees to load and unload pigs; however, they do not suggest the use of any specific <span class="hlt">bedding</span>. <span class="hlt">Bedding</span> types (nothing, feed, sand, wood shavings, and hay) were tested with finishing pigs (70–120 kg) to determine which was most effective in reducing slips, falls, and vocalizations at three ramp angles, two moisture levels, over two seasons. Slips, falls, and vocalizations were summed to establish a scoring system for the types of <span class="hlt">beddings</span>. Heart rate and the total time it took to load and unload pigs, increased as the slope increased. <span class="hlt">Bedding</span>, <span class="hlt">bedding</span> moisture, season, and ramp slope interacted to impact the total time it took for finishing pigs to load and unload the ramp. Selection of the best <span class="hlt">bedding</span> depends on ramp slope, season, and wetness of <span class="hlt">bedding</span>. Abstract The use of non-slip surfaces during loading and unloading of finishing pigs plays an important role in animal welfare and economics of the pork industry. Currently, the guidelines available only suggest the use of ramps with a slope below 20 degrees to load and unload pigs. However, the total time it takes to load and unload animals and slips, falls, and vocalizations are a welfare concern. Three ramp angles (0, 10 or 20 degrees), five <span class="hlt">bedding</span> materials (nothing, sand, feed, wood shavings or wheat straw hay), two moistures (dry or wet <span class="hlt">bedding</span>, >50% moisture) over two seasons (>23.9 °C summer, <23.9 °C winter) were assessed for slips/falls/vocalizations (n = 2400 pig observations) and analyzed with a scoring system. The use of <span class="hlt">bedding</span> during summer or winter played a role in the total time it took to load and unload the ramp (p < 0.05). <span class="hlt">Bedding</span>, <span class="hlt">bedding</span> moisture, season, and slope significantly interacted to impact the total time to load and unload finishing pigs (p < 0.05). Heart rate and the total time it took to load and unload the ramp increased as the slope of the ramp increased (p < 0.05). Heart rates were higher during the</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/sir/2010/5065/','USGSPUBS'); return false;" href="https://pubs.usgs.gov/sir/2010/5065/"><span>Channel Change and <span class="hlt">Bed</span>-Material Transport in the Lower Chetco River, Oregon</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Wallick, J. Rose; Anderson, Scott W.; Cannon, Charles; O'Connor, Jim E.</p> <p>2010-01-01</p> <p>The lower Chetco River is a wandering gravel-<span class="hlt">bed</span> river flanked by abundant and large gravel bars formed of coarse <span class="hlt">bed</span>-material sediment. Since the early twentieth century, the large gravel bars have been a source of commercial aggregate for which ongoing permitting and aquatic habitat concerns have motivated this assessment of historical channel change and sediment transport rates. Analysis of historical channel change and <span class="hlt">bed</span>-material transport rates for the lower 18 kilometers shows that the upper reaches of the study area are primarily transport <span class="hlt">zones</span>, with bar positions fixed by valley geometry and active bars mainly providing transient storage of <span class="hlt">bed</span> material. Downstream reaches, especially near the confluence of the North Fork Chetco River, are <span class="hlt">zones</span> of active sedimentation and channel migration. Multiple analyses, supported by direct measurements of bedload during winter 2008-09, indicate that since 1970 the mean annual flux of <span class="hlt">bed</span> material into the study reach has been about 40,000-100,000 cubic meters per year. Downstream tributary input of <span class="hlt">bed</span>-material sediment, probably averaging 5-30 percent of the influx coming into the study reach from upstream, is approximately balanced by <span class="hlt">bed</span>-material attrition by abrasion. Probably little <span class="hlt">bed</span> material leaves the lower river under natural conditions, with most net influx historically accumulating in wider and more dynamic reaches, especially near the North Fork Chetco River confluence, 8 kilometers upstream from the Pacific Ocean. The year-to-year flux, however, varies tremendously. Some years may have less than 3,000 cubic meters of <span class="hlt">bed</span> material entering the study area; by contrast, some high-flow years, such as 1982 and 1997, likely have more than 150,000 cubic meters entering the reach. For comparison, the estimated annual volume of gravel extracted from the lower Chetco River for commercial aggregate during 2000-2008 has ranged from 32,000 to 90,000 cubic meters and averaged about 59,000 cubic meters per year</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://pubs.usgs.gov/of/2009/1163/','USGSPUBS'); return false;" href="https://pubs.usgs.gov/of/2009/1163/"><span>Channel Change and <span class="hlt">Bed</span>-Material Transport in the Lower Chetco River, Oregon</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Wallick, J. Rose; Anderson, Scott W.; Cannon, Charles; O'Connor, Jim E.</p> <p>2009-01-01</p> <p>The lower Chetco River is a wandering gravel-<span class="hlt">bed</span> river flanked by abundant and large gravel bars formed of coarse <span class="hlt">bed</span>-material sediment. The large gravel bars have been a source of commercial aggregate since the early twentieth century for which ongoing permitting and aquatic habitat concerns have motivated this assessment of historical channel change and sediment transport rates. Analysis of historical channel change and <span class="hlt">bed</span>-material transport rates for the lower 18 kilometers show that the upper reaches of the study area are primarily transport <span class="hlt">zones</span>, with bar positions fixed by valley geometry and active bars mainly providing transient storage of <span class="hlt">bed</span> material. Downstream reaches, especially near the confluence of the North Fork Chetco River, have been <span class="hlt">zones</span> of active sedimentation and channel migration. Multiple analyses, supported by direct measurements of bedload during winter 2008-09, indicate that since 1970 the mean annual flux of <span class="hlt">bed</span> material into the study reach has been about 40,000-100,000 cubic meters per year. Downstream tributary input of <span class="hlt">bed</span>-material sediment, probably averaging 5-30 percent of the influx coming into the study reach from upstream, is approximately balanced by <span class="hlt">bed</span>-material attrition by abrasion. Probably very little <span class="hlt">bed</span> material leaves the lower river under natural conditions, with most of the net influx historically accumulating in wider and more dynamic reaches, especially near the North Fork Chetco River confluence, 8 kilometers upstream from the Pacific Ocean. The year-to-year flux, however, varies tremendously. Some years probably have less than 3,000 cubic meters of <span class="hlt">bed</span>-material entering the study area; by contrast, some high-flow years, such as 1982 and 1997, likely have more than 150,000 cubic meters entering the reach. For comparison, the estimated annual volume of gravel extracted from the lower Chetco River for commercial aggregate during 2000-2008 has ranged from 32,000 to 90,000 cubic meters and averaged about 59</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/11457776','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/11457776"><span>Cardiac atrophy after <span class="hlt">bed</span> rest and spaceflight.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Perhonen, M A; Franco, F; Lane, L D; Buckey, J C; Blomqvist, C G; Zerwekh, J E; Peshock, R M; Weatherall, P T; Levine, B D</p> <p>2001-08-01</p> <p>Cardiac muscle adapts well to changes in loading conditions. For example, left ventricular (LV) hypertrophy may be induced physiologically (via exercise training) or pathologically (via hypertension or valvular heart disease). If hypertension is treated, LV hypertrophy regresses, suggesting a sensitivity to LV work. However, whether physical inactivity in nonathletic populations causes adaptive changes in LV mass or even frank atrophy is not clear. We exposed previously sedentary men to 6 (n = 5) and 12 (n = 3) wk of horizontal <span class="hlt">bed</span> rest. LV and right ventricular (RV) mass and end-diastolic volume were measured using cine magnetic resonance imaging (MRI) at 2, 6, and 12 wk of <span class="hlt">bed</span> rest; five healthy men were also studied before and after at least 6 wk of routine daily activities as controls. In addition, four astronauts were exposed to the complete elimination of hydrostatic gradients during a spaceflight of 10 days. During <span class="hlt">bed</span> rest, LV mass decreased by 8.0 +/- 2.2% (P = 0.005) after 6 wk with an additional atrophy of 7.6 +/- 2.3% in the subjects who remained in <span class="hlt">bed</span> for 12 wk; there was no change in LV mass for the control subjects (153.0 +/- 12.2 vs. 153.4 +/- 12.1 g, P = 0.81). Mean wall thickness decreased (4 +/- 2.5%, P = 0.01) after 6 wk of <span class="hlt">bed</span> rest associated with the decrease in LV mass, suggesting a physiological remodeling with respect to altered load. LV end-diastolic volume decreased by 14 +/- 1.7% (P = 0.002) after 2 wk of <span class="hlt">bed</span> rest and changed minimally thereafter. After 6 wk of <span class="hlt">bed</span> rest, RV free wall mass decreased by 10 +/- 2.7% (P = 0.06) and RV end-diastolic volume by 16 +/- 7.9% (P = 0.06). After spaceflight, LV mass decreased by 12 +/- 6.9% (P = 0.07). In conclusion, cardiac atrophy occurs during prolonged (6 wk) horizontal <span class="hlt">bed</span> rest and may also occur after short-term spaceflight. We suggest that cardiac atrophy is due to a physiological adaptation to reduced myocardial load and work in real or simulated microgravity and demonstrates the plasticity</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2003ASAJ..114R2374F','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2003ASAJ..114R2374F"><span>Acoustic detectability of squid egg <span class="hlt">beds</span></span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Foote, Kenneth G.; Hanlon, Roger T.; Henry, Annette E.; Hochstaedter, Alfred; Kvitek, Rikk; Sullivan, Deidre; Yogozawa, Yuko</p> <p>2003-10-01</p> <p>Egg <span class="hlt">beds</span> of the market squid (Loligo opalescens) on the bottom of Monterey Bay seem to have been detected by means of sidescan sonar at 420 kHz. Evidence for this is presented in the form of sidescan sonar images and egg-<span class="hlt">bed</span> distribution maps from the same area, as prepared from camera surveys by scuba divers. The general detectability issue is also considered, with specific reference made to preliminary physical measurements performed on two egg capsules. [Work supported by Sea Grant.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://adsabs.harvard.edu/abs/2010PhyW...23d...6C','NASAADS'); return false;" href="http://adsabs.harvard.edu/abs/2010PhyW...23d...6C"><span>South Africa slashes pebble-<span class="hlt">bed</span> cash</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Cartlidge, Edwin</p> <p>2010-04-01</p> <p>A novel modular technology that promised to make nuclear power cheaper and safer has suffered a serious blow following withdrawal of support from the South African government. It decided not to renew funding for the pebble-<span class="hlt">bed</span> modular reactor beyond 31 March this year following a lack of interest from other investors and no customers for its product. The company developing the reactor concept - Pebble <span class="hlt">Bed</span> Modular Reactor Ltd (PBMR) - is to axe three-quarters of its roughly 800 staff and its chief executive has resigned.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://ntrs.nasa.gov/search.jsp?R=19930000275&hterms=alcohol&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D30%26Ntt%3Dalcohol','NASA-TRS'); return false;" href="https://ntrs.nasa.gov/search.jsp?R=19930000275&hterms=alcohol&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D30%26Ntt%3Dalcohol"><span>Enzymatic Catalytic <span class="hlt">Beds</span> For Oxidation Of Alcohols</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Jolly, Clifford D.; Schussel, Leonard J.</p> <p>1993-01-01</p> <p>Modules containing <span class="hlt">beds</span> of enzymatic material catalyzing oxidation of primary alcohols and some other organic compounds developed for use in wastewater-treatment systems of future spacecraft. Designed to be placed downstream of multifiltration modules, which contain filters and sorbent <span class="hlt">beds</span> removing most of non-alcoholic contaminants but fail to remove significant amounts of low-molecular-weight, polar, nonionic compounds like alcohols. Catalytic modules also used on Earth to oxidize primary alcohols and other compounds in wastewater streams and industrial process streams.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://ntrs.nasa.gov/search.jsp?R=20040112365&hterms=Cine&qs=N%3D0%26Ntk%3DAll%26Ntx%3Dmode%2Bmatchall%26Ntt%3DCine','NASA-TRS'); return false;" href="https://ntrs.nasa.gov/search.jsp?R=20040112365&hterms=Cine&qs=N%3D0%26Ntk%3DAll%26Ntx%3Dmode%2Bmatchall%26Ntt%3DCine"><span>Cardiac atrophy after <span class="hlt">bed</span> rest and spaceflight</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Perhonen, M. A.; Franco, F.; Lane, L. D.; Buckey, J. C.; Blomqvist, C. G.; Zerwekh, J. E.; Peshock, R. M.; Weatherall, P. T.; Levine, B. D.</p> <p>2001-01-01</p> <p>Cardiac muscle adapts well to changes in loading conditions. For example, left ventricular (LV) hypertrophy may be induced physiologically (via exercise training) or pathologically (via hypertension or valvular heart disease). If hypertension is treated, LV hypertrophy regresses, suggesting a sensitivity to LV work. However, whether physical inactivity in nonathletic populations causes adaptive changes in LV mass or even frank atrophy is not clear. We exposed previously sedentary men to 6 (n = 5) and 12 (n = 3) wk of horizontal <span class="hlt">bed</span> rest. LV and right ventricular (RV) mass and end-diastolic volume were measured using cine magnetic resonance imaging (MRI) at 2, 6, and 12 wk of <span class="hlt">bed</span> rest; five healthy men were also studied before and after at least 6 wk of routine daily activities as controls. In addition, four astronauts were exposed to the complete elimination of hydrostatic gradients during a spaceflight of 10 days. During <span class="hlt">bed</span> rest, LV mass decreased by 8.0 +/- 2.2% (P = 0.005) after 6 wk with an additional atrophy of 7.6 +/- 2.3% in the subjects who remained in <span class="hlt">bed</span> for 12 wk; there was no change in LV mass for the control subjects (153.0 +/- 12.2 vs. 153.4 +/- 12.1 g, P = 0.81). Mean wall thickness decreased (4 +/- 2.5%, P = 0.01) after 6 wk of <span class="hlt">bed</span> rest associated with the decrease in LV mass, suggesting a physiological remodeling with respect to altered load. LV end-diastolic volume decreased by 14 +/- 1.7% (P = 0.002) after 2 wk of <span class="hlt">bed</span> rest and changed minimally thereafter. After 6 wk of <span class="hlt">bed</span> rest, RV free wall mass decreased by 10 +/- 2.7% (P = 0.06) and RV end-diastolic volume by 16 +/- 7.9% (P = 0.06). After spaceflight, LV mass decreased by 12 +/- 6.9% (P = 0.07). In conclusion, cardiac atrophy occurs during prolonged (6 wk) horizontal <span class="hlt">bed</span> rest and may also occur after short-term spaceflight. We suggest that cardiac atrophy is due to a physiological adaptation to reduced myocardial load and work in real or simulated microgravity and demonstrates the plasticity</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://ntrs.nasa.gov/search.jsp?R=20040112365&hterms=cine&qs=N%3D0%26Ntk%3DAll%26Ntx%3Dmode%2Bmatchall%26Ntt%3Dcine','NASA-TRS'); return false;" href="https://ntrs.nasa.gov/search.jsp?R=20040112365&hterms=cine&qs=N%3D0%26Ntk%3DAll%26Ntx%3Dmode%2Bmatchall%26Ntt%3Dcine"><span>Cardiac atrophy after <span class="hlt">bed</span> rest and spaceflight</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Perhonen, M. A.; Franco, F.; Lane, L. D.; Buckey, J. C.; Blomqvist, C. G.; Zerwekh, J. E.; Peshock, R. M.; Weatherall, P. T.; Levine, B. D.</p> <p>2001-01-01</p> <p>Cardiac muscle adapts well to changes in loading conditions. For example, left ventricular (LV) hypertrophy may be induced physiologically (via exercise training) or pathologically (via hypertension or valvular heart disease). If hypertension is treated, LV hypertrophy regresses, suggesting a sensitivity to LV work. However, whether physical inactivity in nonathletic populations causes adaptive changes in LV mass or even frank atrophy is not clear. We exposed previously sedentary men to 6 (n = 5) and 12 (n = 3) wk of horizontal <span class="hlt">bed</span> rest. LV and right ventricular (RV) mass and end-diastolic volume were measured using cine magnetic resonance imaging (MRI) at 2, 6, and 12 wk of <span class="hlt">bed</span> rest; five healthy men were also studied before and after at least 6 wk of routine daily activities as controls. In addition, four astronauts were exposed to the complete elimination of hydrostatic gradients during a spaceflight of 10 days. During <span class="hlt">bed</span> rest, LV mass decreased by 8.0 +/- 2.2% (P = 0.005) after 6 wk with an additional atrophy of 7.6 +/- 2.3% in the subjects who remained in <span class="hlt">bed</span> for 12 wk; there was no change in LV mass for the control subjects (153.0 +/- 12.2 vs. 153.4 +/- 12.1 g, P = 0.81). Mean wall thickness decreased (4 +/- 2.5%, P = 0.01) after 6 wk of <span class="hlt">bed</span> rest associated with the decrease in LV mass, suggesting a physiological remodeling with respect to altered load. LV end-diastolic volume decreased by 14 +/- 1.7% (P = 0.002) after 2 wk of <span class="hlt">bed</span> rest and changed minimally thereafter. After 6 wk of <span class="hlt">bed</span> rest, RV free wall mass decreased by 10 +/- 2.7% (P = 0.06) and RV end-diastolic volume by 16 +/- 7.9% (P = 0.06). After spaceflight, LV mass decreased by 12 +/- 6.9% (P = 0.07). In conclusion, cardiac atrophy occurs during prolonged (6 wk) horizontal <span class="hlt">bed</span> rest and may also occur after short-term spaceflight. We suggest that cardiac atrophy is due to a physiological adaptation to reduced myocardial load and work in real or simulated microgravity and demonstrates the plasticity</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://pubs.er.usgs.gov/publication/1000990','USGSPUBS'); return false;" href="http://pubs.er.usgs.gov/publication/1000990"><span>Lake <span class="hlt">bed</span> classification using acoustic data</span></a></p> <p><a target="_blank" href="http://pubs.er.usgs.gov/pubs/index.jsp?view=adv">USGS Publications Warehouse</a></p> <p>Yin, Karen K.; Li, Xing; Bonde, John; Richards, Carl; Cholwek, Gary</p> <p>1998-01-01</p> <p>As part of our effort to identify the lake <span class="hlt">bed</span> surficial substrates using remote sensing data, this work designs pattern classifiers by multivariate statistical methods. Probability distribution of the preprocessed acoustic signal is analyzed first. A confidence region approach is then adopted to improve the design of the existing classifier. A technique for further isolation is proposed which minimizes the expected loss from misclassification. The devices constructed are applicable for real-time lake <span class="hlt">bed</span> categorization. A mimimax approach is suggested to treat more general cases where the a priori probability distribution of the substrate types is unknown. Comparison of the suggested methods with the traditional likelihood ratio tests is discussed.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('http://www.ars.usda.gov/research/publications/publication/?seqNo115=325323','TEKTRAN'); return false;" href="http://www.ars.usda.gov/research/publications/publication/?seqNo115=325323"><span>Arid <span class="hlt">Zone</span> Hydrology</span></a></p> <p><a target="_blank" href="https://www.ars.usda.gov/research/publications/find-a-publication/">USDA-ARS?s Scientific Manuscript database</a></p> <p></p> <p></p> <p>Arid <span class="hlt">zone</span> hydrology encompasses a wide range of topics and hydro-meteorological and ecological characteristics. Although arid and semi-arid watersheds perform the same functions as those in humid environments, their hydrology and sediment transport characteristics cannot be readily predicted by inf...</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://ntrs.nasa.gov/search.jsp?R=19860000596&hterms=Zoning&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D20%26Ntt%3DZoning','NASA-TRS'); return false;" href="https://ntrs.nasa.gov/search.jsp?R=19860000596&hterms=Zoning&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D20%26Ntt%3DZoning"><span>Microgravity Silicon <span class="hlt">Zoning</span> Investigation</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Kern, E. L.</p> <p>1985-01-01</p> <p>This research program is directed toward the understanding of the float <span class="hlt">zone</span> crystal growth process, the melt interactions which lead to crystal inhomogeneities, and the influence of microgravity on reducing these inhomogeneities. Silicon was selected as the model crystal because its inhomogeneities lead to known variations in device performance, and because the mechanisms involved in its growth are understood better than for other high temperature crystals. The objective of the program is to understand the growth mechanisms in float <span class="hlt">zone</span> growth and thereby determine the feasibility and advantages of float <span class="hlt">zone</span> growth of silicon under microgravity conditions. This will be done by characterizing the growth at g = 1, projecting the changes in melt flows due to microgravity, observing these in space growth and determining the effects on defective inhomogeneities. A Thin Rod Zoner was constructed as a laboratory prototype for flight growth of 5 mm diameter silicon crystals, which can be done within the power and cooling capabilities of shuttle flights. A new method of <span class="hlt">zoning</span> silicon, using resistance heating, has resulted in melting 5 mm diameter ingots.</p> </li> <li> <p><a target="_blank" onclick="trackOutboundLink('https://www.ncbi.nlm.nih.gov/pubmed/24137992','PUBMED'); return false;" href="https://www.ncbi.nlm.nih.gov/pubmed/24137992"><span>Flexible '<span class="hlt">zoning</span>' aids adaptability.</span></a></p> <p><a target="_blank" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Corben, Simon</p> <p>2013-09-01</p> <p>Simon Corben, business development director at Capita Symonds' Health team, examines how 'clever use of <span class="hlt">zoning</span>' when planning new healthcare facilities could improve hospital design, increase inherent flexibility, and reduce lifetime costs, and argues that a 'loose-fit, non-bespoke approach' to space planning will lead to 'more flexible buildings that are suitable for conversion to alternative uses'.</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_21");'>21</a></li> <li><a href="#" onclick='return showDiv("page_22");'>22</a></li> <li><a href="#" onclick='return showDiv("page_23");'>23</a></li> <li><a href="#" onclick='return showDiv("page_24");'>24</a></li> <li class="active"><span>25</span></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_25 --> <center> <div class="footer-extlink text-muted"><small>Some links on this page may take you to non-federal websites. 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