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1

Training Opportunities! Sun, Shades, and Training!  

E-print Network

Training Opportunities! Sun, Shades, and Training! June 2014 A Work of Art Postal Plaza Gallery.m. to 4:00 p.m. The OSHA 10-hour General Industry Outreach Training Programs were developed by the OSHA Training Institute with the intent to assist employers in training and introducing employees to the basic

Veiga, Pedro Manuel Barbosa

2

Evaluation of overheating protection with sun-shading systems  

Microsoft Academic Search

Sun-shading systems have to provide thermal and visual comfort both reliably and economically. At the same time, they should prevent unwanted solar gains in summer and permit high solar gains in winter. This paper describes a method to assess the overheating protection offered by different types of sun-shading systems together with the associated control strategy.The objective of the new method

Tilmann E Kuhn; Christopher Bühler; Werner J Platzer

2001-01-01

3

Stomatal and photosynthetic responses during sun\\/shade transitions in subalpine plants: influence on water use efficiency  

Microsoft Academic Search

Different response patterns in net photosynthesis (A) leaf conductance (g) and water use efficiency (WUE= a\\/transpiration) in three subalpine plants occurred during experimental sun\\/shade transitions that simulated natural cloudcover. In Frasera speciosa Dougl., a large-leaved herb characteristic of open sites, g was relatively insensitive to transitions in irradiance and variations in A. However, large decreases in leaf temperature resulted in

A. K. Knapp; W. K. Smith

1987-01-01

4

Retractable Sun Shade  

NASA Technical Reports Server (NTRS)

Window-shade type spring roller contains blanket, taken up by rotating cylindrical frame and held by frame over area to be shaded. Blanket made of tough, opaque polyimide material. Readily unfurled by mechanism to protect space it encloses from Sun. Blanket forms arched canopy over space and allows full access to it from below. When shading not needed, retracted mechanism stores blanket compactly. Developed for protecting sensitive Space Shuttle payloads from direct sunlight while cargo-bay doors open. Adapted to shading of greenhouses, swimming pools, and boats.

Frank, A.; Derespinis, S. F.; Mockovciak, John, Jr.

1986-01-01

5

The role of the Jews in Venetian commerce  

E-print Network

Against the background of the Grand Canal in Venice, Alan Macfarlane describes some of the ways in which the Jewish merchants helped the Venetians overcome the prohibitions of lending money at interest....

Macfarlane, Alan

2004-08-05

6

Temporal dynamics of the Venetian blind effect.  

PubMed

When square wave gratings are viewed binocularly with lower luminance or contrast in one eye, the individual bars of the grating appear to rotate around a vertical axis (Venetian blind effect). The effect has typically been thought to occur due to retinal disparities that result from irradiation and, therefore, are entirely entoptic. If so, the visual system should process disparities from a luminance or contrast disparity and a geometric disparity at the same rate. Studies of motion-in-depth using geometric disparities have shown that the visual system is unable to process depth cues when those cues are oscillated at frequencies greater than 5 Hz. By changing contrast (experiments one and two) and geometric (experiment three) disparity cues over time, the present study measured the frequency at which both the perception of motion-in-depth and the perception of depth diminish. The perception of motion-in-depth from contrast disparities decreased near 1.1 Hz (experiments one and four) and the perception of depth from contrast disparities decreased near 1.3 Hz (experiments one, two and four); both of which are lower than the frequency where depth from a geometric disparity diminished (near 4.8 Hz in experiment three). The differences between the dynamics of depth from contrast and geometric disparities suggest that the perception arises from separate neural mechanisms. PMID:22406308

Dobias, Joshua Jay; Stine, Wm Wren

2012-05-01

7

Sun Part Sun Shade prairie gardening  

E-print Network

-long habitat for wildlife. Be sure to select plants that are appropriate for your soil, water, and light throughout this season. Having something in bloom all the time can be fun to look at, and creates season planting these Great Lakes native species to increase wildlife value in your yard: p These plants work best

Shyy, Wei

8

A system for optimizing interior daylight distribution using reflective Venetian blinds with independent blind angle control  

E-print Network

An operational algorithm for blind angle control is developed to optimize the daylighting performance of a system of reflective Venetian blinds. Numerical modeling and experiment confirm that independent control of alternating ...

McGuire, Molly E

2005-01-01

9

78 FR 40632 - Safety Zone; Venetian Fireworks; Kalamazoo Lake, Saugatuck, MI  

Federal Register 2010, 2011, 2012, 2013

...Safety Zone; Venetian Fireworks; Kalamazoo Lake, Saugatuck, MI AGENCY: Coast Guard...establishing a temporary safety zone on Kalamazoo Lake in Saugatuck, MI. This safety zone is...restrict vessels from a portion of Kalamazoo Lake due to a fireworks display. This...

2013-07-08

10

A simplified model of heat transfer at an indoor window glazing surface with a Venetian blind  

Microsoft Academic Search

In this article, a simplified model is developed to predict the radiative and convective heat transfer in a complex fenestration system consisting of a Venetian blind located adjacent to an indoor window glazing. Empirical correlations for natural convection in an asymmetrically heated channel and an isolated flat plate are used in this one-dimensional simplified model. In this simplified model, an

Derek Roeleveld; David Naylor; Pat Oosthuizen

2010-01-01

11

Extended Breeding Season in the Marbled Goby, Pomatoschistus Marmoratus (Teleostei: Gobiidae), in the Venetian Lagoon  

Microsoft Academic Search

Life cycle and reproductive biology of the marbled goby Pomatoschistus marmoratus was studied in the Venetian Lagoon. Lifespan was determined by reading otoliths. The maximum age recorded was 17 months juveniles occurred in samples from July to November. Nests were found in two different periods: from the middle of April to the middle of July and from the middle of

Carlotta Mazzoldi; Maria B. Rasotto

2001-01-01

12

Mechanism of variable structural colour in the neon tetra: quantitative evaluation of the Venetian blind model  

PubMed Central

The structural colour of the neon tetra is distinguishable from those of, e.g., butterfly wings and bird feathers, because it can change in response to the light intensity of the surrounding environment. This fact clearly indicates the variability of the colour-producing microstructures. It has been known that an iridophore of the neon tetra contains a few stacks of periodically arranged light-reflecting platelets, which can cause multilayer optical interference phenomena. As a mechanism of the colour variability, the Venetian blind model has been proposed, in which the light-reflecting platelets are assumed to be tilted during colour change, resulting in a variation in the spacing between the platelets. In order to quantitatively evaluate the validity of this model, we have performed a detailed optical study of a single stack of platelets inside an iridophore. In particular, we have prepared a new optical system that can simultaneously measure both the spectrum and direction of the reflected light, which are expected to be closely related to each other in the Venetian blind model. The experimental results and detailed analysis are found to quantitatively verify the model. PMID:20554565

Yoshioka, S.; Matsuhana, B.; Tanaka, S.; Inouye, Y.; Oshima, N.; Kinoshita, S.

2011-01-01

13

Hypogenic contribution to speleogenesis in a predominant epigenic karst system: A case study from the Venetian Alps, Italy  

E-print Network

the Venetian Alps, Italy Nicola Tisato a, , Francesco Sauro b , Stefano M. Bernasconi a , Rolf H.C. Bruijn University of Bologna, Istituto Italiano di Speleologia, Via Zamboni 67, 40126 Bologna, Italy a b s t r a c in north-east Italy. They are part of the same karst system and are developed in the Castelgomberto

Gilli, Adrian

14

Assessing transmissivity from specific capacity in an alluvial aquifer in the middle Venetian plain (NE Italy).  

PubMed

Defining aquifer permeability distribution accurately over large areas is often debated in hydrogeology. The operational efforts to calculate hydraulic conductivity with classical aquifer tests are significant; however, accurate knowledge of permeability areal distribution is fundamental both from a hydrogeological and a modeling standpoint. This paper presents an empirical relationship between the transmissivity (T) and the specific capacity (SC) values obtained from experimental aquifer and well tests. All experimental values were obtained from 50 mm wells in middle Venetian plain artesian gravel aquifers. Many other authors have presented empirical relationships between T and SC, but most are related to fissured/karst aquifers, and only a few concern alluvial porous aquifers. Analysis of the T vs. SC relationship standardized residuals shows that a linear relationship produces statistically significant normal residuals compared with an exponential relationship. PMID:23656943

Fabbri, Paolo; Piccinini, Leonardo

2013-01-01

15

Venetian ships and seafaring up to the nautical revolution: a study based on artistic representations of ships and boats before ca. 1450  

E-print Network

and boats were unquestionably vital to the Venetian Maritime Republic, and her ships were of extreme importance historically. Many details as to the nature of these watercraft, however, have yet to be well understood. What types of watercraft did... and boats were unquestionably vital to the Venetian Maritime Republic, and her ships were of extreme importance historically. Many details as to the nature of these watercraft, however, have yet to be well understood. What types of watercraft did...

Ray, Lillian Elizabeth

2012-06-07

16

Wetlands in the Venetian Po Plain (northeastern Italy) during the Last Glacial Maximum: Interplay between vegetation, hydrology and sedimentary environment  

Microsoft Academic Search

In the low Venetian plain (northeastern Italy) thick sequences of silt and sand layers alternate with common, thin layers of peat and organic silt; the organic layers in the topmost 30 m of the Late Pleistocene alluvial series span between 23,000 and 14,000 yr BP (radiocarbon dating), in an area measuring 100 km by 30 km. They indicate broad areas where wetlands developed. We

A. Miola; A. Bondesan; L. Corain; S. Favaretto; P. Mozzi; S. Piovan; I. Sostizzo

2006-01-01

17

How the venetian blind percept emerges from the laminar cortical dynamics of 3D vision  

PubMed Central

The 3D LAMINART model of 3D vision and figure-ground perception is used to explain and simulate a key example of the Venetian blind effect and to show how it is related to other well-known perceptual phenomena such as Panum's limiting case. The model proposes how lateral geniculate nucleus (LGN) and hierarchically organized laminar circuits in cortical areas V1, V2, and V4 interact to control processes of 3D boundary formation and surface filling-in that simulate many properties of 3D vision percepts, notably consciously seen surface percepts, which are predicted to arise when filled-in surface representations are integrated into surface-shroud resonances between visual and parietal cortex. Interactions between layers 4, 3B, and 2/3 in V1 and V2 carry out stereopsis and 3D boundary formation. Both binocular and monocular information combine to form 3D boundary and surface representations. Surface contour surface-to-boundary feedback from V2 thin stripes to V2 pale stripes combines computationally complementary boundary and surface formation properties, leading to a single consistent percept, while also eliminating redundant 3D boundaries, and triggering figure-ground perception. False binocular boundary matches are eliminated by Gestalt grouping properties during boundary formation. In particular, a disparity filter, which helps to solve the Correspondence Problem by eliminating false matches, is predicted to be realized as part of the boundary grouping process in layer 2/3 of cortical area V2. The model has been used to simulate the consciously seen 3D surface percepts in 18 psychophysical experiments. These percepts include the Venetian blind effect, Panum's limiting case, contrast variations of dichoptic masking and the correspondence problem, the effect of interocular contrast differences on stereoacuity, stereopsis with polarity-reversed stereograms, da Vinci stereopsis, and perceptual closure. These model mechanisms have also simulated properties of 3D neon color spreading, binocular rivalry, 3D Necker cube, and many examples of 3D figure-ground separation. PMID:25309467

Cao, Yongqiang; Grossberg, Stephen

2014-01-01

18

Geomorphological analysis of sinkhole and landslide hazard in a karst area of the Venetian Prealps- Italy  

NASA Astrophysics Data System (ADS)

In the pedemountain area of the Asiago Plateau (Venetian Prealps - NE Italy) sinkholes and landslides represent in many cases a complex response to karst processes. Field survey showed that both soil and bedrock are involved, mainly represented by colluvial-alluvial sediments and carbonate rocks. Preliminary observations also reveal the key role of piping and cave-collapse phenomena and the importance of human remedial measures. Within study area, these processes cause damage mainly to agricultural and pasture activities and expose peoples and farm animals to very high hazards. This work provides preliminary results of geomorphological analysis carried out to define sinkhole and landslide hazard and his connections with karst processes. During first phases of the research program, an inventory of interesting phenomena has been elaborated employing GIS technologies. The database has been constantly revised and enriched with new field measurements and thematic maps (i.e. geomorphological, geo-structural, hydrogeological, caves development maps). Specifically, field survey focused on the morphodynamic definition of instability elements allowing to recognize a wide range of morphotypes (mainly with regard to sinkholes) and polygenic morphologies (i.e. mixed sinkholes-landslides configurations). Geomorphological analysis also revealed specific evolutionary trends of instability processes; they could be useful employed to program more effective mitigation strategies.

Tiberi, Valentina

2010-05-01

19

Effective Energy Simulation and Optimal Design of Side-lit Buildings with Venetian Blinds  

NASA Astrophysics Data System (ADS)

Venetian blinds are popularly used in buildings to control the amount of incoming daylight for improving visual comfort and reducing heat gains in air-conditioning systems. Studies have shown that the proper design and operation of window systems could result in significant energy savings in both lighting and cooling. However, there is no convenient computer tool that allows effective and efficient optimization of the envelope of side-lit buildings with blinds now. Three computer tools, Adeline, DOE2 and EnergyPlus widely used for the above-mentioned purpose have been experimentally examined in this study. Results indicate that the two former tools give unacceptable accuracy due to unrealistic assumptions adopted while the last one may generate large errors in certain conditions. Moreover, current computer tools have to conduct hourly energy simulations, which are not necessary for life-cycle energy analysis and optimal design, to provide annual cooling loads. This is not computationally efficient, particularly not suitable for optimal designing a building at initial stage because the impacts of many design variations and optional features have to be evaluated. A methodology is therefore developed for efficient and effective thermal and daylighting simulations and optimal design of buildings with blinds. Based on geometric optics and radiosity method, a mathematical model is developed to reasonably simulate the daylighting behaviors of venetian blinds. Indoor illuminance at any reference point can be directly and efficiently computed. They have been validated with both experiments and simulations with Radiance. Validation results show that indoor illuminances computed by the new models agree well with the measured data, and the accuracy provided by them is equivalent to that of Radiance. The computational efficiency of the new models is much higher than that of Radiance as well as EnergyPlus. Two new methods are developed for the thermal simulation of buildings. A fast Fourier transform (FFT) method is presented to avoid the root-searching process in the inverse Laplace transform of multilayered walls. Generalized explicit FFT formulae for calculating the discrete Fourier transform (DFT) are developed for the first time. They can largely facilitate the implementation of FFT. The new method also provides a basis for generating the symbolic response factors. Validation simulations show that it can generate the response factors as accurate as the analytical solutions. The second method is for direct estimation of annual or seasonal cooling loads without the need for tedious hourly energy simulations. It is validated by hourly simulation results with DOE2. Then symbolic long-term cooling load can be created by combining the two methods with thermal network analysis. The symbolic long-term cooling load can keep the design parameters of interest as symbols, which is particularly useful for the optimal design and sensitivity analysis. The methodology is applied to an office building in Hong Kong for the optimal design of building envelope. Design variables such as window-to-wall ratio, building orientation, and glazing optical and thermal properties are included in the study. Results show that the selected design values could significantly impact the energy performance of windows, and the optimal design of side-lit buildings could greatly enhance energy savings. The application example also demonstrates that the developed methodology significantly facilitates the optimal building design and sensitivity analysis, and leads to high computational efficiency.

Cheng, Tian

20

Expression of 8-OHdG in Zosterisessor ophiocephalus from the Venetian lagoon, Italy  

PubMed Central

The aim of the present work was to evaluate the expression of 8-OHdG (8-hydroxy-2'-deoxyguanosine) in the benthic fish Zosterisessor ophiocephalus collected in two differently polluted sites of the Venetian lagoon (Porto Marghera and Caroman). We compared our data on 8-OHdG with those of CYP1A (Cytochrome P450, family 1, subfamily A, polypeptide 1), which is a well known biomarker for detoxification of contaminants. Immunohistochemistry with an antibody to 8-OHdG showed immunopositivity in nuclei of hepatocytes as well as in melanomacrophage centres of spleen and kidney, whereas an anti-CYP1A antibody exhibited positive immunostaining in the liver, kidney and ovary. The liver of males showed higher expression of both proteins than females. In animals from Porto Marghera site, the enzymatic assay for 8-OHdG exhibited higher levels in liver of males than in females. Western Blot analysis using the antibody anti-CYP1A recognized the presence of a band of about 60 kDa in the liver of males and females. Males exhibited a strong band, whereas in females the band showed a lower intensity. By using Real-Time PCR, the mRNA expression of CYP1A did not show any differences between males and females from each site, but it was at borderline significance level. Comparing the two sites, mRNA expression of CYP1A was significantly higher in the liver of both males and females from Porto Marghera than that of Caroman. The present data suggest that pollutants are bio-available as demonstrated by our biomarker analyses and may have a harmful effect on aquatic organisms such as Z. ophiocephalus. We report that the highest levels of hepatic 8-OHdG and CYP1A expression were detected in males, showing clear gender specificity. PMID:23549467

Negrato, E.; Vascellari, M.; Capolongo, F.; Binato, G.; Da Dalt, L.; Boscolo Papo, M.; Gioacchini, G.; Carnevali, O.; Bertotto, D.; Radaelli, G.; Pascoli, F.

2013-01-01

21

Laparoscopic repair of diastasis recti using the ‘Venetian blinds’ technique of plication with prosthetic reinforcement: a retrospective study  

Microsoft Academic Search

Background  Diastasis is a separation of the two recti due to various reasons, and can be measured as the ‘inter-recti distance’ (IRD).\\u000a Surgery for diastasis is controversial, while laparoscopic repair has rarely been reported. We describe our method of laparoscopic\\u000a plication—the ‘Venetian blinds’ technique combined with mesh reinforcement for patients with diastasis of the recti.\\u000a \\u000a \\u000a \\u000a Materials and methods  A total of 18

C. Palanivelu; M. Rangarajan; P. A. Jategaonkar; V. Amar; K. S. Gokul; B. Srikanth

2009-01-01

22

Photochemistry in Saturn’s Ring-Shadowed Atmosphere: Venetian Blinds, Atmospheric Molecules and Observations  

NASA Astrophysics Data System (ADS)

Cassini has been orbiting Saturn for over nine years. During this epoch, the ring shadow has moved from covering a relatively large portion of the northern hemisphere to covering a large swath south of the equator and continues to move southward. At Saturn Orbit Insertion in 2004, the ring plane was inclined by ~24 degrees relative to the Sun-Saturn vector. The projection of the B-ring onto Saturn reached as far as 40N along the central meridian 52N at the terminator). At its maximum extent, the ring shadow can reach as far as 48N/S 58N/S at the terminator). The net effect is that the intensity of both ultraviolet and visible sunlight penetrating into any particular latitude will vary depending on both Saturn’s axis relative to the Sun and the optical thickness of each ring system. In essence, the rings act like venetian blinds. Our previous work [1] examined the variation of the solar flux as a function of solar inclination, i.e. ~8 year season at Saturn. Here, we report on the impact of the oscillating ring shadow on the photolysis and production rates of hydrocarbons in Saturn’s stratosphere and upper troposphere, including acetylene, ethane, propane, and benzene. Beginning with methane, we investigate the impact on production and loss rates of the long-lived photochemical products leading to haze formation are examined at several latitudes over a Saturn year. Similarly, we assess its impact on phosphine abundance, a disequilibrium species whose presence in the upper troposphere is a tracer of convection processes in the deep atmosphere. Comparison to the corresponding rates for the clear atmosphere and for the case of Jupiter, where the variation of solar insolation due to tilt is known to be insignificant 3 degree inclination), will be presented. We will present our ongoing analysis of Cassini’s CIRS, UVIS, and VIMS datasets that provide an estimate of the evolving haze content of the northern hemisphere and we will begin to assess the implications for dynamical mixing. [1] Edgington, S.G., et al., 2012. Photochemistry in Saturn’s Ring Shadowed Atmosphere: Modeling, Observations, and Preliminary Analysis. Bull. American. Astron. Soc., 38, 499 (#11.23).

Edgington, Scott G.; Atreya, S. K.; Wilson, E. H.; Baines, K. H.; West, R. A.; Bjoraker, G. L.; Fletcher, L. N.; Momary, T.

2013-10-01

23

Photochemistry in Saturn's Ring-Shadowed Atmosphere: Of Venetian Blinds, Atmospheric Molecules and Observations  

NASA Astrophysics Data System (ADS)

Cassini has been orbiting Saturn for over nine years. During this epoch, the ring shadow has moved from covering a relatively large portion of the northern hemisphere to covering a large swath south of the equator and continues to move southward. At Saturn Orbit Insertion in 2004, the ring plane was inclined by ~24 degrees relative to the Sun-Saturn vector. The projection of the B-ring onto Saturn reached as far as 40N along the central meridian (~52N at the terminator). At its maximum extent, the ring shadow can reach as far as 48N/S (~58N/S at the terminator). The net effect is that the intensity of both ultraviolet and visible sunlight penetrating into any particular latitude will vary depending on both Saturn's axis relative to the Sun and the optical thickness of each ring system. In essence, the rings act like venetian blinds. Our previous work [1] examined the variation of the solar flux as a function of solar inclination, i.e. ~8 year season at Saturn. Here, we report on the impact of the oscillating ring shadow on the photolysis and production rates of hydrocarbons in Saturn's stratosphere and upper troposphere, including acetylene, ethane, propane, and benzene. Beginning with methane, we investigate the impact on production and loss rates of the long-lived photochemical products leading to haze formation are examined at several latitudes over a Saturn year. Similarly, we assess its impact on phosphine abundance, a disequilibrium species whose presence in the upper troposphere is a tracer of convection processes in the deep atmosphere. Comparison to the corresponding rates for the clear atmosphere and for the case of Jupiter, where the variation of solar insolation due to tilt is known to be insignificant (~3 degree inclination), will be presented. We will present our ongoing analysis of Cassini's CIRS, UVIS, and VIMS datasets that provide an estimate of the evolving haze content of the northern hemisphere and we will begin to assess the implications for dynamical mixing. [1] Edgington, S.G., et al., 2012. Photochemistry in Saturn's Ring Shadowed Atmosphere: Modeling, Observations, and Preliminary Analysis. Bull. American. Astron. Soc., 38, 499 (#11.23).

Edgington, S. G.; Atreya, S. K.; Wilson, E. H.; Baines, K. H.; West, R. A.; Bjoraker, G. L.; Fletcher, L. N.; Momary, T.

2013-12-01

24

Orbitally induced limestone\\/marlstone rhythms in the Albian—Cenomanian Cismon section (Venetian region, northern Italy): Sedimentology, calcareous and siliceous plankton distribution, elemental and isotope geochemistry  

Microsoft Academic Search

A multidisciplinary study of the upper Albian—Cenomanian portion of the Cismon section (Venetian region, northern Italy) was undertaken in order to characterize the cyclic alternations of carbonate-rich and carbonate-poor layers and to investigate their possible origin and cyclic patterns. Limestone semicouplets are characterized by abundant radiolarians and micarbs (micron-sized calcitic fragments), common planktonic foraminifera, strong bioturbation, good oxygenation as expressed

A. Bellanca; M. Claps; E. Erba; D. Masetti; R. Neri; I. Premoli Silva; F. Venezia

1996-01-01

25

Evidence of climatic changes in the Venetian Coastal Plain (Northern Italy) during the last 40,000 years  

NASA Astrophysics Data System (ADS)

Borehole ARS-S1 sampled sediments down to 40 m under the coastal city of Venice with the aim of reconstructing climatic variations during the last 40,000 years. Seven sedimentary facies belonging to continental and littoral depositional systems have been identified and dated. An age-depth model gives a mean sedimentation rate of 1.6 mm yr- 1 between 40 and 22.5 cal ka BP. A general change in sedimentation rate occurred around 29 cal ka BP, indicating an increased accumulation during the Last Glacial Maximum. The main climatic changes during the last 40,000 years have been identified through pollen analyses. From the deepest core depth to - 5 m the pollen sequence indicates a long glacial period characterized by open steppe vegetation with pine and low concentrations of arboreal pollen grains. Fluctuations of mountain elements and the occurrence of Quercetum elements indicate the presence of the main interstadials and interglacial phases of the Middle Weichselian-Holocene interval. This framework results from comparison with European palyno-chronostratigraphic records and Atlantic stadial and interstadial chronologies, and confirms the evolution of the Venetian Plain under global climatic pulses.

Donnici, Sandra; Serandrei-Barbero, Rossana; Canali, Giuseppe

2012-12-01

26

Solar passive ceiling system. Final report. [Passive solar heating system with venetian blind reflectors and latent heat storage in ceiling  

SciTech Connect

The construction of a 1200 square foot building, with full basement, built to be used as a branch library in a rural area is described. The primary heating source is a passive solar system consisting of a south facing window system. The system consists of: a set of windows located in the south facing wall only, composed of double glazed units; a set of reflectors mounted in each window which reflects sunlight up to the ceiling (the reflectors are similar to venetian blinds); a storage area in the ceiling which absorbs the heat from the reflected sunlight and stores it in foil salt pouches laid in the ceiling; and an automated curtain which automatically covers and uncovers the south facing window system. The system is totally passive and uses no blowers, pumps or other active types of heat distribution equipment. The building contains a basement which is normally not heated, and the north facing wall is bermed four feet high around the north side.

Schneider, A.R.

1980-01-01

27

The dilemma of gaps in carbonate stratigraphic sequences: A case history from the Jurassic of the Venetian Alps, Italy  

SciTech Connect

The Lower Ammonitico Rosso (L.A.R.) of the western Venetian Alps is a thin, red nodular limestone that overlies a thick Late Triassic to Middle Jurassic (Aalenian) shallow-water platform sequence. It is thought to represent a Middle Jurassic (Bajocian) drowning event whereby the Trento Platform became a submerged plateau. The L.A.R. is problematic in that it (1) is rich in ammonites and other pelagic fauna; (2) contains stromatolites, oncolites, and shallow-water sedimentary structures; and (3) directly overlies platform sediments that contain complex brecciated fabrics filled by cement and Bajocian-age sediment. These seemingly contradictory features have generated much debate as to the sequence stratigraphy of the Trento Platform. New evidence suggests that the L.A.R. was deposited in a shallow-water environment following a period of subaerial exposure. In an east-west transect from the platform edge to platform interior, a clear transition is exhibited from high- and low-energy open-marine facies to restricted lagoonal facies. High-energy open-marine facies include well-sorted skeletal- and peloidal-rich sands possessing low-angle to planar cross stratification and thin, fairly sorted ammonite- and belemnite-rich gravels. Sands include both shallow-water and pelagic fauna; gravels commonly contain ripup clasts from underlying sediments. Low-energy open-marine facies consist of buff colored wackestones and packstones that contain ammonites, belemnites, pelagic bivalves, and peloids. With respect to paleogeography, the abrupt transition from open-marine facies at the platform edge to lagoonal facies in the platform interior indicates that thrombolites, stromatolites, and oncolites accumulated in a shallow restricted environment.

Zempolich, W.G. (Johns Hopkins Univ., Baltimore, MD (United States))

1991-03-01

28

Adjustments in epidermal UV-transmittance of leaves in sun-shade transitions.  

PubMed

Epidermal UV transmittance (TUV ) and UV-absorbing compounds were measured in sun and shade leaves of Populus tremuloides and Vicia faba exposed to contrasting light environments under field conditions to evaluate UV acclimation potentials and regulatory roles of photosynthetically active radiation (PAR) and UV in UV-shielding. Within a natural canopy of P. tremuloides, TUV ranged from 4 to 98% and showed a strong nonlinear relationship with mid-day horizontal fluxes of PAR [photon flux density (PFD)?=?6-1830?µmol?m?² ?s?¹]; similar patterns were found for V. faba leaves that developed under a comparable PFD range. A series of field transfer experiments using neutral-density shade cloth and UV blocking/transmitting films indicated that PAR influenced TUV during leaf development to a greater degree than UV, and shade leaves of both species increased their UV-shielding when exposed to full sun; however, this required the presence of UV, with both UV-A and UV-B required for full acclimation. TUV of sun leaves of both species was largely unresponsive to shade either with or without UV. In most, but not all cases, changes in TUV were associated with alterations in the concentration of whole-leaf UV-absorbing compounds. These results suggest that, (1) moderate-to-high levels of PAR alone during leaf development can induce substantial UV-protection in field-grown plants, (2) mature shade leaves have the potential to adjust their UV-shielding which may reduce the detrimental effects of UV that could occur following sudden exposures to high light and (3) under field conditions, PAR and UV play different roles in regulating UV-shielding during and after leaf development. PMID:23330642

Barnes, Paul W; Kersting, Anna R; Flint, Stephan D; Beyschlag, Wolfram; Ryel, Ronald J

2013-10-01

29

BMT provides in-house specialists in green building project management  

E-print Network

environments using computer simulation. Sun Shading Study · Overshadowing · Sun Shading Device · Availability the LCA tools. Energy Simulation BMT can analyse the energy efficiency of buildings and provide advice on building envelop and services systems for more energy efficient development. Energy Use: Typical Building

30

Using a MODFLOW grid, generated with GMS, to solve a transport problem with TOUGH2 in complex geological environments: The intertidal deposits of the Venetian Lagoon  

NASA Astrophysics Data System (ADS)

The tides of the Venetian Lagoon generally vary between -0.5 and +0.7 m asl. Occasionally, they may reach a maximum of 1.5 m (acqua alta) and a minimum of -0.8 m asl (acqua bassa). Intertidal areas, called "barene," exist all along the coast of the Lagoon. These areas are characterized by canals that concentrate the flow of water (and the deposition of sands) during the rising and waning of the tides, and that inundate and drain the vegetated areas found between canals (where organic-rich clays are deposited). Therefore, since the area is subject to subsidence, in time, sand dykes (the original canals) become juxtaposed to clayey dykes (the original vegetated areas). In addition, the sands form a continuous hydrogeologic network within the clays, very similar to that of a vascular system that effectively drains the whole "barena" deposits. In order to be effective, measures for monitoring, confining, or remediating the transport of pollutants through this kind of environment must explicitly take into account the geologic complexity. The same complexity must be included in the numerical models that support remediation efforts. At the moment, there appears to be no off-the-shelf graphical interface that is able to manage such complexity for TOUGH2. To attempt to solve this problem we have used a calibrated USGS-MODFLOW model, of the barena of "Passo a Campalto" in the Venetian Lagoon, developed with the GMS graphical interface. The model is made of 42 layers, which, apart from the first layer, are 0.5 m thick; the first layer has the thickness distribution of a dump found on top of the barena deposit at Passo a Campalto. Each layer consists of 100×60 square cells, for a total of 252,000 cells, only about half of which are active. Using a FORTRAN routine, we translate this grid, with all the hydrogeologic boundary conditions, into a TOUGH2 input file, and we provide the additional necessary information for running a TOUGH2 simulation. The results are promising, in that we were able to produce TOUGH2 grids with very complex geology and to run the models with success. For visualization, the results can be imported back into GMS as 3D scatter point sets, or they can be plotted with any adequate plotting software such as MatLab. Developing conceptual and numerical models with an elaborate graphical interface such as GMS effectively allows setting up complex problems while concentrating on their physics.

Borgia, A.; Cattaneo, L.; Marconi, D.; Delcroix, C.; Rossi, E. L.; Clemente, G.; Amoroso, C. G.; Lo Re, F.; Tozzato, E.

2011-06-01

31

Middle Eocene Nummulites and their offshore re-deposition: A case study from the Middle Eocene of the Venetian area, northeastern Italy  

NASA Astrophysics Data System (ADS)

The Middle Eocene Calcari nummulitici formation from northeastern Italy, Venetian area, represents a shallow-marine carbonate ramp developed on the northern Tethyan margin. In the Monti Berici area, its main components are larger foraminifera and coralline red algal communities that constitute thick carbonate sedimentary successions. Middle ramp and proximal outer ramp environments are recognized using component relationships, biofacies and sedimentary features. The middle-ramp is characterized by larger flattened-lenticular Nummulites on palaeohighs between which rhodoliths formed. Larger Nummulites palaeohighs containing Nummulites millecaput, Nummulites crassus, Nummulites discorbinus and Nummulites cf. gizehensis developed more basin-wards. The following relatively quiet environments of basin-wards of the palaeohighs represent areas of maximum carbonate production. The transition between the distal middle- and the proximal outer-ramp settings is marked in the study area by a large erosional surface which is interpreted to have been formed as a result of an erosive channel body filled in by deposits re-sedimented from shallower depths. These off-shore re-sedimented channelized deposits, ascribed to the Shallow Benthic Zone SBZ 15, lying on hemipelagic marls (planktonic foraminiferal zone E9 (P11)) allow for a biostratigraphic correlation to the Late Lutetian. The studied deposits, represented by packstone to rudstones, were displaced whilst still unlithified. The Lutetian-Bartonian regression along with the local tectonic activity promoted the production of a high amount of biogenic shallow-water carbonates mainly produced in the Mossano middle-ramp settings. These prograded towards the basinal areas with high-sedimentation rate of carbonate deposits characterized by the larger Nummulites rudstones. Such high amounts of sediment led to sediment instability which potentially could be mobilized either by return currents due to occasional major storms or by earthquakes induced by tectonic activity. These will have led to the offshore re-deposition of the Nummulites sediments into deeper water setting via the observed channels. Since potential migration pathways are short, such distal re-sedimented channel-filled material surrounded by hemipelagic marls is optimally placed for the formation of potential subsurface oil reservoirs.

Bassi, Davide; Nebelsick, James H.; Puga-Bernabéu, Ángel; Luciani, Valeria

2013-11-01

32

Interactions between irradiance, nitrogen nutrition, and water stress in the sun-shade responses of Solanum dulcamara  

Microsoft Academic Search

When grown with adequate water and nitrogen (12 mM NO3-) four clones of Solanum dulcamara from sun or shade habitats in Europe showed similar potential for acclimation of photosynthesis to irradiance level during growth. When grown with limiting nitrogen (0.6 mM NO3-) all clones showed a low potential for acclimation of photosynthesis to irradiance during growth. If limiting nitrogen was

C. B. Osmond

1983-01-01

33

Daydreaming Devices  

E-print Network

Daydreaming Devices is a project on aspects of daydream and the design of convertible furniture within the context of art. This thesis addresses the concepts and the design of two daydreaming devices developed during my ...

Da Ponte, Ana Sofia Lopes

2008-01-01

34

Electrochromic devices  

DOEpatents

An electrochromic device is disclosed having a selective ion transport layer which separates an electrochemically active material from an electrolyte containing a redox active material. The devices are particularly useful as large area architectural and automotive glazings due to there reduced back reaction.

Allemand, Pierre M. (Tucson, AZ); Grimes, Randall F. (Ann Arbor, MI); Ingle, Andrew R. (Tucson, AZ); Cronin, John P. (Tucson, AZ); Kennedy, Steve R. (Tuscon, AZ); Agrawal, Anoop (Tucson, AZ); Boulton, Jonathan M. (Tucson, AZ)

2001-01-01

35

Gripping device  

NASA Technical Reports Server (NTRS)

This invention relates to a gripping device, and more particularly to one with a large moment carrying capability for handling long workpieces of various diameters and which can be particularly used as an end effector on a robotic arm.

Parma, George F. (inventor)

1989-01-01

36

Device Performance  

SciTech Connect

In the Device Performance group, within the National Center for Photovoltaic's Measurements and Characterization Division, we measure the performance of PV cells and modules with respect to standard reporting conditions--defined as a reference temperature (25 C), total irradiance (1000 Wm-2), and spectral irradiance distribution (IEC standard 60904-3). Typically, these are ''global'' reference conditions, but we can measure with respect to any reference set. To determine device performance, we conduct two general categories of measurements: spectral responsivity (SR) and current versus voltage (I-V). We usually perform these measurements using standard procedures, but we develop new procedures when required by new technologies. We also serve as an independent facility for verifying device performance for the entire PV community. We help the PV community solve its special measurement problems, giving advice on solar simulation, instrumentation for I-V measurements, reference cells, measurement procedures, and anomalous results. And we collaborate with researchers to analyze devices and materials.

Not Available

2006-06-01

37

Listening Devices  

NSDL National Science Digital Library

We've covered most of the basics of how sound is produced and transmitted, but we've left something out, and that's all the electronic devices we use to amplify sound, reproduce it, or get it from one place to another. How exactly does a CD player work? How does a phone work? And how exactly do those two listening devices we carry on either side of our head work? No, not headphones, even though it might seem that some kids do have those permanently attached. The item in question is our ears.

Robertson, William C.

2003-01-01

38

Detection device  

DOEpatents

The present invention is directed to a detection device comprising: (1) an entrance chamber, (2) a central chamber, and (3) an exit chamber. The central chamber includes an ionizing gas, anode, and means for connecting the anode with an external power supply and pulse counter.

Smith, Jay E. (Pittsburgh, PA)

1984-01-01

39

Detection device  

DOEpatents

The present invention is directed to a detection device comprising: (1) an entrance chamber; (2) a central chamber; and (3) an exit chamber. The central chamber includes an ionizing gas, anode, and means for connecting the anode with an external power supply and pulse counter.

Smith, J.E.

1981-02-27

40

Electrochemical device  

DOEpatents

A tunnel protected electrochemical device features channels fluidically communicating between manifold, tunnels and cells. The channels are designed to provide the most efficient use of auxiliary power. The channels have a greater hydraulic pressure drop and electrical resistance than the manifold. This will provide a design with the optimum auxiliary energy requirements.

Grimes, Patrick G. (Westfield, NJ); Einstein, Harry (Springfield, NJ); Bellows, Richard J. (Westfield, NJ)

1988-01-12

41

Antigravity device  

Microsoft Academic Search

An educational toy useful in demonstrating fundamental concepts regarding the laws of gravity is described. The device comprises a sphere 10 of radius r resting on top of sphere 12 of radius R. The center of gravity of sphere 10 is displaced from its geometrical center by distance D. The dimensions are so related that D((R+r)\\/r) is greater than r.

S. Palsingh

1975-01-01

42

Living Devices  

E-print Network

The physiological tradition of biological research analyzes biological systems using reduced descriptions much as an engineer uses a 'black box' description of an amplifier. Simple models have been used by physiologists for a very long time. Physiologists have successfully analyzed a broad range of biological systems using a 'device-oriented' approach similar to the approach an engineer would use to investigate her devices. The present generation views biology through the powerful lenses of structural and (molecular) dynamic analysis, understandably enough because of the beauty and power of the analysis, and the ease of using these structures with present freely available software. The problem is that these powerful lenses offer such magnification that the engineering approach cannot be seen. High magnification means limited field of view, because the (spatial) dynamic range cannot cover everything. The function of the structures and molecular dynamics cannot be seen in the work of many biologists, probably b...

Eisenberg, Bob

2012-01-01

43

Boring devices  

SciTech Connect

The improvement in the boring devices is adapted to cut grooves or cavities at the bottom of bored holes. It comprises a tool containing a diaphragm forming an expansion chamber to which a liquid under pressure can be supplied for radially displacing cutting elements set with diamonds between a retracted position and a projecting working position. The measurement of the variation of the volume of the liquid under pressure in a chamber enables the radial position of the elements to be known.

Suied, J. P.

1985-03-12

44

Mobile Device Guide Google Android based devices  

E-print Network

Mobile Device Guide ­ Google Android based devices CSUF Date Last Revised: 1/20/11 Page 1 of 3 Connecting to the Campus via Exchange Activesync Applies to ­ Google Android based devices only If you;Mobile Device Guide ­ Google Android based devices CSUF Date Last Revised: 1/20/11 Page 2 of 3 2. Under

de Lijser, Peter

45

Diversionary device  

DOEpatents

A diversionary device has a housing having at least one opening and containing a non-explosive propellant and a quantity of fine powder packed within the housing, with the powder being located between the propellant and the opening. When the propellant is activated, it has sufficient energy to propel the powder through the opening to produce a cloud of powder outside the housing. An igniter is also provided for igniting the cloud of powder to create a diversionary flash and bang, but at a low enough pressure to avoid injuring nearby people.

Grubelich, Mark C. (Albuquerque, NM)

2001-01-01

46

Electrospray device  

NASA Technical Reports Server (NTRS)

An electrospray device includes an electrospray emitter adapted to receive electrospray fluid; an extractor plate spaced from the electrospray emitter and having at least one aperture; and a power supply for applying a first voltage between the extractor plate and emitter for generating at least one Taylor cone emission through the aperture to create an electrospray plume from the electrospray fluid, the extractor plate as well as accelerator and shaping plates may include a porous, conductive medium for transporting and storing excess, accumulated electrospray fluid away from the aperture.

Demmons, Nathaniel (Inventor); Martin, Roy (Inventor); Hruby, Vladimir (Inventor); Roy, Thomas (Inventor); Spence, Douglas (Inventor); Ehrbar, Eric (Inventor); Zwahlen, Jurg (Inventor)

2011-01-01

47

Electroexplosive device  

NASA Technical Reports Server (NTRS)

An electroexplosive device is presented which employs a header having contact pins hermetically sealed with glass passing through from a connector end of the header to a cavity filled with a shunt layer of a new nonlinear resistive composition and a heat-sink layer of a new dielectric composition having good thermal conductivity and capacity. The nonlinear resistive layer and the heat-sink layer are prepared from materials by mixing with a low temperature polymerizing resin. The resin is dissolved in a suitable solvent and later evaporated. The resultant solid composite is ground into a powder, press formed into the header and cured (polymerized) at about 250 to 300 F.

Menichelli, V. J. (inventor)

1978-01-01

48

Electrochromic device  

DOEpatents

An electrochromic device includes a first substrate spaced from a second substrate. A first conductive member is formed over at least a portion of the first substrate. A first electrochromic material is formed over at least a portion of the first conductive member. The first electrochromic material includes an organic material. A second conductive member is formed over at least a portion of the second substrate. A second electrochromic material is formed over at least a portion of the second conductive member. The second electrochromic material includes an inorganic material. An ionic liquid is positioned between the first electrochromic material and the second electrochromic material.

Schwendemanm, Irina G. (Wexford, PA); Polcyn, Adam D. (Pittsburgh, PA); Finley, James J. (Pittsburgh, PA); Boykin, Cheri M. (Kingsport, TN); Knowles, Julianna M. (Apollo, PA)

2011-03-15

49

Remote Physical Device Fingerprinting  

Microsoft Academic Search

We introduce the area of remote physical device fingerprinting, or fingerprinting a physical device, as opposed to an operating system or class of devices, remotely, and without the finger- printed device's known cooperation. We accomplish this goal by exploiting small, microscopic deviations in device hardware: clock skews. Our techniques do not require any modification to the fingerprinted devices. Our techniques

Tadayoshi Kohno; Andre Broido; Kimberly C. Claffy

2005-01-01

50

EPICS GPIB device support  

Microsoft Academic Search

A GPIB device support module is used to provide access to the operating parameters of a GPIB device. GPIB devices may be accessed via National Instruments 1014 cards or via Bitbus Universal Gateways. GPIB devices typically have many parameters, each of which may be thought of in terms of the standard types of database records available in EPICS. It is

Winans

1993-01-01

51

Verifiably Secure Devices  

E-print Network

We put forward the notion of a verifiably secure device, in essence a stronger notion of secure computation, and achieve it in the ballot-box model. Verifiably secure devices1. Provide a perfect solution to the problem of ...

Lepinski, Matt

2007-12-05

52

Implantable Medical Devices  

MedlinePLUS

... A left ventricular assist device (LVAD) is a battery-operated, mechanical pump-type device that's surgically implanted. ... of the body and attached to the pump's battery and control system. LVADs are now portable and ...

53

Recent Medical Device Recalls  

MedlinePLUS

... is a Medical Device Recall? Recalls Database Safety Communications MedWatch: The FDA Safety Information and Adverse Event Reporting Program FDA 101: Product Recalls - From First Alert to Effectiveness Checks [ARCHIVED] Older Recalls 2011 Medical Device Recalls [ ...

54

Input devices for CCDs  

NASA Astrophysics Data System (ADS)

A systematic account of the physical and network-engineering aspects of the operation and design of input devices for CCDs is presented with emphasis on the maximum possibilities of such devices with respect to the injection of small signals into the CCD. A classification of input devices is given. It is shown that a unified approach to input devices as devices that are based on transistor structures makes it possible to identify the properties and limitations of all types of input devices for CCDs. Particular consideration is given to potentials and charges of MOS cells, methods of signal injection, the concentration of charge carriers in the source and gate, and the volt-ampere characteristics of input devices. Equivalent circuits, modes of operation, and electric circuits of input devices are also considered

Trishenkov, M. A.; Vinetskii, Iu. R.

1982-12-01

55

Bipolar thermoelectric devices  

E-print Network

The work presented here is a theoretical and experimental study of heat production and transport in bipolar electrical devices, with detailed treatment of thermoelectric effects. Both homojunction and heterojunction devices ...

Pipe, Kevin P. (Kevin Patrick), 1976-

2004-01-01

56

Multiported storage devices  

E-print Network

implement our device using kernel driver modules and by performing several modifications to the Linux kernel to accommodate the multiported storage device architecture. We also present experimental results showing the impact of our layered drivers on I...

Grande, Marcus Bryan

2012-06-07

57

Device Analyzer for Android  

E-print Network

Device Analyzer for Android Data Transfer Phone & Texts Apps Battery & Charging Bluetooth Location Wifi Computer Laboratory Participate! Transferreddata(inMB) Personal Analytics widely deployed Device Analyzer Why collectthis data? ·If you want to make informed choices when designing mobile devices

Cambridge, University of

58

Static Elimination Devices (Staticmaster)  

E-print Network

Static Elimination Devices (Staticmaster) Ionizer and Brush Fact Sheet If your lab utilizes static elimination devices such as Staticmaster anti-static ionizers or brushes, please take a moment to read the following information. Static elimination devices are designed to remove static in many different

Delgado, Mauricio

59

Articulating feedstock delivery device  

DOEpatents

A fully articulable feedstock delivery device that is designed to operate at pressure and temperature extremes. The device incorporates an articulating ball assembly which allows for more accurate delivery of the feedstock to a target location. The device is suitable for a variety of applications including, but not limited to, delivery of feedstock to a high-pressure reaction chamber or process zone.

Jordan, Kevin

2013-11-05

60

Selecting Devices for Aggregation  

Microsoft Academic Search

As intelligent devices become affordable and wireless in- frastructure becomes pervasive, the potential to combine, or aggregate, device functionality to provide a user with a better experience grows. Often, there will be multi- ple devices providing similar functionality that the user will have to choose from for the aggregation. This pa- per presents the design and prototype implementation of a

Rajnish Kumar; Vahe Poladian; Ira Greenberg; Alan Messer; Dejan S. Milojicic

2003-01-01

61

Portable data collection device  

DOEpatents

The present invention provides a portable data collection device that has a variety of sensors that are interchangeable with a variety of input ports in the device. The various sensors include a data identification feature that provides information to the device regarding the type of physical data produced by each sensor and therefore the type of sensor itself. The data identification feature enables the device to locate the input port where the sensor is connected and self adjust when a sensor is removed or replaced. The device is able to collect physical data, whether or not a function of a time. 7 figs.

French, P.D.

1996-06-11

62

Portable data collection device  

DOEpatents

The present invention provides a portable data collection device that has a variety of sensors that are interchangeable with a variety of input ports in the device. The various sensors include a data identification feature that provides information to the device regarding the type of physical data produced by each sensor and therefore the type of sensor itself. The data identification feature enables the device to locate the input port where the sensor is connected and self adjust when a sensor is removed or replaced. The device is able to collect physical data, whether or not a function of a time.

French, Patrick D. (Aurora, CO)

1996-01-01

63

Active cleaning technique device  

NASA Technical Reports Server (NTRS)

The objective of this program was to develop a laboratory demonstration model of an active cleaning technique (ACT) device. The principle of this device is based primarily on the technique for removing contaminants from optical surfaces. This active cleaning technique involves exposing contaminated surfaces to a plasma containing atomic oxygen or combinations of other reactive gases. The ACT device laboratory demonstration model incorporates, in addition to plasma cleaning, the means to operate the device as an ion source for sputtering experiments. The overall ACT device includes a plasma generation tube, an ion accelerator, a gas supply system, a RF power supply and a high voltage dc power supply.

Shannon, R. L.; Gillette, R. B.

1973-01-01

64

Smart portable rehabilitation devices  

PubMed Central

Background The majority of current portable orthotic devices and rehabilitative braces provide stability, apply precise pressure, or help maintain alignment of the joints with out the capability for real time monitoring of the patient's motions and forces and without the ability for real time adjustments of the applied forces and motions. Improved technology has allowed for advancements where these devices can be designed to apply a form of tension to resist motion of the joint. These devices induce quicker recovery and are more effective at restoring proper biomechanics and improving muscle function. However, their shortcoming is in their inability to be adjusted in real-time, which is the most ideal form of a device for rehabilitation. This introduces a second class of devices beyond passive orthotics. It is comprised of "active" or powered devices, and although more complicated in design, they are definitely the most versatile. An active or powered orthotic, usually employs some type of actuator(s). Methods In this paper we present several new advancements in the area of smart rehabilitation devices that have been developed by the Northeastern University Robotics and Mechatronics Laboratory. They are all compact, wearable and portable devices and boast re-programmable, real time computer controlled functions as the central theme behind their operation. The sensory information and computer control of the three described devices make for highly efficient and versatile systems that represent a whole new breed in wearable rehabilitation devices. Their applications range from active-assistive rehabilitation to resistance exercise and even have applications in gait training. The three devices described are: a transportable continuous passive motion elbow device, a wearable electro-rheological fluid based knee resistance device, and a wearable electrical stimulation and biofeedback knee device. Results Laboratory tests of the devices demonstrated that they were able to meet their design objectives. The prototypes of portable rehabilitation devices presented here did demonstrate that these concepts are capable of the performance their commercially available but non-portable counterparts exhibit. Conclusion Smart, portable devices with the ability for real time monitoring and adjustment open a new era in rehabilitation where the recovery process could be dramatically improved. PMID:16011801

Mavroidis, Constantinos; Nikitczuk, Jason; Weinberg, Brian; Danaher, Gil; Jensen, Katherine; Pelletier, Philip; Prugnarola, Jennifer; Stuart, Ryan; Arango, Roberto; Leahey, Matt; Pavone, Robert; Provo, Andrew; Yasevac, Dan

2005-01-01

65

Barrier breaching device  

DOEpatents

A barrier breaching device that is designed primarily for opening holes in interior walls of buildings uses detonating fuse for explosive force. The fuse acts as the ribs or spokes of an umbrella-like device that may be opened up to form a cone. The cone is placed against the wall so that detonating fuse that rings the base of the device and which is ignited by the spoke-like fuses serves to cut a circular hole in the wall.

Honodel, Charles A. (Tracy, CA)

1985-01-01

66

Inhaler devices for asthma.  

PubMed

Inhalation therapy is now the mainstay of treatment for asthma but for many patients such treatment is still not optimal. The delivered dose can vary widely between different delivery systems, and between patients, depending on how well they use a particular device. Many new inhaler devices are now available, and their competing promotional claims can confuse both prescribers and patients. In this article we review the devices marketed and discuss how to select the best one for a particular patient. PMID:10829349

2000-02-01

67

Barrier breaching device  

DOEpatents

A barrier breaching device that is designed primarily for opening holes in interior walls of buildings uses detonating fuse for explosive force. The fuse acts as the ribs or spokes of an umbrella-like device that may be opened up to form a cone. The cone is placed against the wall so that detonating fuse that rings the base of the device and which is ignited by the spoke-like fuses serves to cut a circular hole in the wall.

Honodel, C.A.

1983-06-01

68

Active multistable twisting device  

NASA Technical Reports Server (NTRS)

Two similarly shaped, such as rectangular, shells are attached to one another such that they form a resulting thin airfoil-like structure. The resulting device has at least two stable equilibrium shapes. The device can be transformed from one shape to another with a snap-through action. One or more actuators can be used to effect the snap-through; i.e., transform the device from one stable shape to another. Power to the actuators is needed only to transform the device from one shape to another.

Schultz, Marc R. (Inventor)

2008-01-01

69

EVA Exercise Device  

NASA Technical Reports Server (NTRS)

EVA (Extra Vehicular Activity) Exercise Device for evaluation and effectiveness of weightlessness on astronauts during long duration spaceflights at the NASA Ames Research Center, Mountain View, California.

1990-01-01

70

EVA Exercise Device  

NASA Technical Reports Server (NTRS)

The EVA (Extra Vehicular Activity) Exercise Device for evaluation and effectiveness of weightlessness on astronauts during long duration spaceflights, at the NASA Ames Research Center, Mountain View, California

1990-01-01

71

Interconnected semiconductor devices  

DOEpatents

Semiconductor layer and conductive layer formed on a flexible substrate, divided into individual devices and interconnected with one another in series by interconnection layers and penetrating terminals.

Grimmer, Derrick P. (White Bear Lake, MN); Paulson, Kenneth R. (North St. Paul, MN); Gilbert, James R. (St. Paul, MN)

1990-10-23

72

High efficiency photovoltaic device  

DOEpatents

An N-I-P type photovoltaic device includes a multi-layered body of N-doped semiconductor material which has an amorphous, N doped layer in contact with the amorphous body of intrinsic semiconductor material, and a microcrystalline, N doped layer overlying the amorphous, N doped material. A tandem device comprising stacked N-I-P cells may further include a second amorphous, N doped layer interposed between the microcrystalline, N doped layer and a microcrystalline P doped layer. Photovoltaic devices thus configured manifest improved performance, particularly when configured as tandem devices.

Guha, Subhendu (Troy, MI); Yang, Chi C. (Troy, MI); Xu, Xi Xiang (Findlay, OH)

1999-11-02

73

Mobile Device Management Android Device Enrollment  

E-print Network

to manage your device. c. Enter your password. #12;d. Accept the Terms and Conditions e. You have completed. 2. Get Touchdown from Google Play a. Open up the Google Play Store. b. Search for Touchdown. c. Use the application. #12;3. Get Citrix Mobile Connect from Google Play a. Open up the Google Play Store. b. Search

74

21 CFR 890.5525 - Iontophoresis device.  

Code of Federal Regulations, 2012 CFR

...DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES PHYSICAL MEDICINE DEVICES Physical Medicine Therapeutic Devices § 890.5525 Iontophoresis device. (a) Iontophoresis device intended for...

2012-04-01

75

21 CFR 890.5525 - Iontophoresis device.  

Code of Federal Regulations, 2011 CFR

...DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES PHYSICAL MEDICINE DEVICES Physical Medicine Therapeutic Devices § 890.5525 Iontophoresis device. (a) Iontophoresis device intended for...

2011-04-01

76

21 CFR 890.5525 - Iontophoresis device.  

Code of Federal Regulations, 2010 CFR

...DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES PHYSICAL MEDICINE DEVICES Physical Medicine Therapeutic Devices § 890.5525 Iontophoresis device. (a) Iontophoresis device intended for...

2010-04-01

77

21 CFR 890.5525 - Iontophoresis device.  

Code of Federal Regulations, 2013 CFR

...DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES PHYSICAL MEDICINE DEVICES Physical Medicine Therapeutic Devices § 890.5525 Iontophoresis device. (a) Iontophoresis device intended for...

2013-04-01

78

Unconventional Quantum Computing Devices  

E-print Network

This paper investigates a variety of unconventional quantum computation devices, including fermionic quantum computers and computers that exploit nonlinear quantum mechanics. It is shown that unconventional quantum computing devices can in principle compute some quantities more rapidly than `conventional' quantum computers.

Seth Lloyd

2000-03-31

79

EPICS GPIB device support  

SciTech Connect

A GPIB device support module is used to provide access to the operating parameters of a GPIB device. GPIB devices may be accessed via National Instruments 1014 cards or via Bitbus Universal Gateways. GPIB devices typically have many parameters, each of which may be thought of in terms of the standard types of database records available in EPICS. It is the job of the device support module designer to decide how the mapping of these parameters will be made to the available record types. Once this mapping is complete, the device support module may be written. The writing of the device support module consists primarily of the construction of a parameter table. This table is used to associate the database record types with the operating parameters of the GPIB instrument. Other aspects of module design include the handling of SRQ events and errors. SRQ events are made available to the device support module if so desired. The processing of an SRQ event is completely up to the designer of the module. They may be ignored, tied to event based record processing, or anything else the designer wishes. Error conditions may be handled in a similar fashion.

Winans, J.

1993-09-24

80

Devices and Educational Change  

ERIC Educational Resources Information Center

This paper uses Actor Network Theory to examine two cases of device-mediated educational change, one involving a computer-assisted interactive video module that provided a half-hour of instruction for a university course, the other an assistive communication device that proved a supposedly retarded pre-school child to be intelligent. The paper…

Nespor, Jan

2011-01-01

81

Microwave device investigations  

NASA Technical Reports Server (NTRS)

Materials, devices and novel schemes for generation, amplification and detection of microwave and millimeter wave energy are studied. Considered are: (1) Schottky-barrier microwave devices; (2) intermodulation products in IMPATT diode amplifiers; and (3) harmonic generation using Read diode varactors.

Choudhury, K. K. D.; Haddad, G. I.; Kwok, S. P.; Masnari, N. A.; Trew, R. J.

1972-01-01

82

Personalizing shared ubiquitous devices  

Microsoft Academic Search

Everywhere we go, we are surrounded by shared devices: TVs, stereos, and appliances in the home; copiers, fax machines, and projectors in the office; phones and vending machines in public. Because these devices don't know who we are, they provide the same user interface and functionality to everyone. This lack of personalization in the real world is reminiscent of the

David M. Hilbert; Jonathan Trevor

2004-01-01

83

Microfabricated drug delivery devices  

Microsoft Academic Search

We review newest developments in the design and fabrication of drug delivery devices based on micropatterned structures. Electronic devices have now reached a stage of dimensions comparable to those of biological macromolecules. This raises exciting possibilities for combining microelectronics and biotechnology to develop new technologies with unprecedented power and versatility. While molecular electronics use the unique self-assembly, switching and dynamic

J. Zachary Hilt; Nicholas A. Peppas

2005-01-01

84

Grey man devices  

E-print Network

The Vision Slaved to Walking Device i s one in a series of devices that are a result of the experimental ambulation series. The ability to see only when one's feet are moving allows for a distorted perspective of ones own ...

Sethi, Sanjit (Sanjit Singh), 1971-

2002-01-01

85

Metamaterial based microwave devices  

Microsoft Academic Search

W e studied metamaterial based microwave devices and investigated the effect of electrical size of the con- stituting elements on the device performance. First, we identify and characterize the suitable subwavelength resonators that are used to create metamaterials. We continued by demonstrating electrically small, metamaterial loaded monopole and patch antennas, miniaturized microwave absorbers, and flat metamaterial lenses with in- creased

K. B. Alici; F. Bilotti; L. Vegni; E. Ozbay

2009-01-01

86

Jini for Ubiquitous Devices  

Microsoft Academic Search

The objective of this work is to reduce the code size and runtime of Jini and Java so the entire system software stack fits in the limited ROM\\/RAM space of a ubiquitous device. Having identified the size bottleneck being the use of RMI and unnecessary functionalities in the context of ubiquitous devices, we 1) propose to exchange service description instead

Polly Huang; Vincent Lenders; Philipp Minnig; Mario Widmer

87

Ferrite devices and materials  

Microsoft Academic Search

The development and current status of microwave ferrite technology is reviewed in this paper. An introduction to the physics and fundamentals of key ferrite devices is provided, followed by a historical account of the development of ferrimagnetic spinel and garnet (YIG) materials. Key ferrite components, i.e., circulators and isolators, phase shifters, tunable filters, and nonlinear devices are also discussed separately

J. Douglas Adam; Lionel E. Davis; Gerald F. Dionne; Ernst F. Schloemann; Steven N. Stitzer

2002-01-01

88

Thermally activated trigger device  

Microsoft Academic Search

This patent describes a nuclear space reactor, a thermally activated trigger device for rendering the reactor subcritical upon reentry to the earth's atmosphere, the device comprising: a closed vessel, a piston slideably mounted in the vessel to divide it into first and second compartments, an inert gas contained within each of the compartments at substantially the same pressure, a connecting

R. B. Harty; T. L. Camaret

1988-01-01

89

Capillary interconnect device  

DOEpatents

An interconnecting device for connecting a plurality of first fluid-bearing conduits to a corresponding plurality of second fluid-bearing conduits thereby providing fluid communication between the first fluid-bearing conduits and the second fluid-bearing conduits. The device includes a manifold and one or two ferrule plates that are held by compressive axial forces.

Renzi, Ronald F

2013-11-19

90

Interactive gait training device \\  

Microsoft Academic Search

In this paper, we evaluated the effectiveness of Walk-Mate, which has been used mainly as a gait compensation device, as a gait rehabilitation training device by analyzing improvement in locomotion before, during and after rehabilitation in hemiparetic patients and comparing it with a previous gait training method. Walk-Mate generates a model walking rhythm in response to a user's locomotion in

Barbara Herzberger; Joachim Hermsdorfer; Yoshihiro Miyake; Ernst Poppel

2007-01-01

91

STORM INLET FILTRATION DEVICE  

EPA Science Inventory

Five field tests were conducted to evaluate the effectiveness of the Storm and Groundwater Enhancement Systems (SAGES) device for removing contaminants from stormwater. The SAGES device is a three-stage filtering system that could be used as a best management practices (BMP) retr...

92

Assistive Listening Devices  

ERIC Educational Resources Information Center

For most hard of hearing students, and for some who are deaf, hearing aids and related sound amplification devices are of great benefit in their communication and learning. Technology has more recently produced an additional array of electronic devices which benefit many hard of hearing students. This report will deal primarily with the relatively…

Warick, Ruth; Clark, Catherine; Dancer, Jesse; Sinclair, Stephen

1997-01-01

93

Self-actuated device  

DOEpatents

A self-actuated device, of particular use as a valve or an orifice for nuclear reactor fuel and blanket assemblies, in which a gas produced by a neutron induced nuclear reaction gradually accumulates as a function of neutron fluence. The gas pressure increase occasioned by such accumulation of gas is used to actuate the device.

Hecht, Samuel L. (Richland, WA)

1984-01-01

94

Device for cutting protrusions  

DOEpatents

An apparatus for clipping a protrusion of material is provided. The protrusion may, for example, be a bolt head, a nut, a rivet, a weld bead, or a temporary assembly alignment tab protruding from a substrate surface of assembled components. The apparatus typically includes a cleaver having a cleaving edge and a cutting blade having a cutting edge. Generally, a mounting structure configured to confine the cleaver and the cutting blade and permit a range of relative movement between the cleaving edge and the cutting edge is provided. Also typically included is a power device coupled to the cutting blade. The power device is configured to move the cutting edge toward the cleaving edge. In some embodiments the power device is activated by a momentary switch. A retraction device is also generally provided, where the retraction device is configured to move the cutting edge away from the cleaving edge.

Bzorgi, Fariborz M. (Knoxville, TN)

2011-07-05

95

Planar electrochemical device assembly  

DOEpatents

A pre-fabricated electrochemical device having a dense electrolyte disposed between an anode and a cathode preferably deposited as thin films is bonded to a porous electrically conductive support. A second porous electrically conductive support may be bonded to a counter electrode of the electrochemical device. Multiple electrochemical devices may be bonded in parallel to a single porous support, such as a perforated sheet to provide a planar array. Planar arrays may be arranged in a stacked interconnected array. A method of making a supported electrochemical device is disclosed wherein the method includes a step of bonding a pre-fabricated electrochemical device layer to an existing porous metal or porous metal alloy layer.

Jacobson; Craig P. (Lafayette, CA), Visco; Steven J. (Berkeley, CA), De Jonghe; Lutgard C. (Lafayette, CA)

2010-11-09

96

Optically detonated explosive device  

NASA Technical Reports Server (NTRS)

A technique and apparatus for optically detonating insensitive high explosives, is disclosed. An explosive device is formed by containing high explosive material in a house having a transparent window. A thin metallic film is provided on the interior surface of the window and maintained in contact with the high explosive. A laser pulse provided by a Q-switched laser is focussed on the window to vaporize the metallic film and thereby create a shock wave which detonates the high explosive. Explosive devices may be concurrently or sequentially detonated by employing a fiber optic bundle to transmit the laser pulse to each of the several individual explosive devices.

Yang, L. C.; Menichelli, V. J. (inventors)

1974-01-01

97

Automobile maneuvering device  

SciTech Connect

An automobile maneuvering device is described which consists of: a chassis comprising transport wheels for permitting movement of the device along the ground, a drive wheel operably rotatably connected to the chassis, and means for rotating the drive wheel, clamp means operably connected to the chassis and spaced from and opposed to the drive wheel, the chassis including means to move the clamp means to engage one portion of an automobile tire with the drive wheel engaged at another portion of the automobile tire, and means to actuate the rotating means, so that with rotation of the drive wheel the automobile tire is rotated and the automobile and device moved along the ground.

Ricciardi, R.

1987-08-18

98

Rain sampling device  

DOEpatents

The present invention constitutes a rain sampling device adapted for independent operation at locations remote from the user which allows rainfall to be sampled in accordance with any schedule desired by the user. The rain sampling device includes a mechanism for directing wet precipitation into a chamber, a chamber for temporarily holding the precipitation during the process of collection, a valve mechanism for controllably releasing samples of said precipitation from said chamber, a means for distributing the samples released from the holding chamber into vessels adapted for permanently retaining these samples, and an electrical mechanism for regulating the operation of the device.

Nelson, Danny A. (Richland, WA); Tomich, Stanley D. (Richland, WA); Glover, Donald W. (Prosser, WA); Allen, Errol V. (Benton City, WA); Hales, Jeremy M. (Kennewick, WA); Dana, Marshall T. (Richland, WA)

1991-01-01

99

Trigonometry via Mobile Device  

NSDL National Science Digital Library

Students investigate the relationships between angles and side lengths in right triangles with the help of materials found in the classroom and a mobile device. Using all or part of a meter stick or dowel and text books or other supplies, students build right triangles and measure the angles using a clinometer application on an Android® (phone or tablet) or iOS® device (iPhone® or iPad®). Then they are challenged to create a triangle with a given side length and one angle. The electronic device is used to measure the accuracy of their constructions.

Impart Ret Program

100

Rain sampling device  

DOEpatents

The present invention constitutes a rain sampling device adapted for independent operation at locations remote from the user which allows rainfall to be sampled in accordance with any schedule desired by the user. The rain sampling device includes a mechanism for directing wet precipitation into a chamber, a chamber for temporarily holding the precipitation during the process of collection, a valve mechanism for controllably releasing samples of the precipitation from the chamber, a means for distributing the samples released from the holding chamber into vessels adapted for permanently retaining these samples, and an electrical mechanism for regulating the operation of the device. 11 figures.

Nelson, D.A.; Tomich, S.D.; Glover, D.W.; Allen, E.V.; Hales, J.M.; Dana, M.T.

1991-05-14

101

Venetian treacle and the foundation of medicines regulation  

PubMed Central

Mithridatium and the related product Theriac were both regarded from the time of their original formulations in the 2nd Century BC and the 1st Century AD respectively, until the mid 18th Century as universal panaceas. Any failure of these products to achieve the desired therapeutic result was attributed to defective composition or manufacture. As a result measures were introduced to ensure the quality of ingredients used in these products composition, the establishment of standard formulations and assurance of the competence of the manufacturer. Manufacture frequently was required to take place in public. Doubts about the efficacy of these panaceas arose in the mid 18th century and concerns of the adverse nature of interactions between the numerous ingredients surfaced in Heberden's treatise of 1745, as result of which these products disappeared from Editions of The London Pharmacopoeia after 1746. Subsequently, arising from these concerns for safety and efficacy, a call was made in 1799 for the establishment of a Public Committee of eminent physicians to scrutinise all new products prior to their launch to an gullible public. The concepts developed in the history of Mithridatium form the basis of modern medicines regulation. PMID:15327592

Griffin, J P

2004-01-01

102

Alerts and Notices (Devices)  

MedlinePLUS

... 03/01/12 Safety tips for intense pulsed light therapy Ventilators 09/06/11 Take Precautions with Audible ... 01/11 "Smart" Infusion Pumps are Selectively Intelligent Phototherapy 02/23/11 Infant Phototherapy Light Enteral Devices ...

103

Quantum device development  

NASA Astrophysics Data System (ADS)

A research and development program on quantum transistors is described. Bipolar and unipolar resonant tunneling transistors were designed, fabricated, and characterized. These devices exhibit negative transconductance, and dc and microwave gain at room temperature. Recommendations are made for further work.

Frensley, W. R.; Luscombe, J. H.; Randall, J. N.; Reed, M. A.; Seabaugh, A.; Yang, C. H.; Diamond, S. K.; Bloom, D. M.

1990-07-01

104

Ferroelectric Light Control Device  

NASA Technical Reports Server (NTRS)

A light control device is formed by ferroelectric material and N electrodes positioned adjacent thereto to define an N-sided regular polygonal region or circular region there between where N is a multiple of four.

Park, Yeonjoon (Inventor); Choi, Sang H. (Inventor); King, Glen C. (Inventor); Kim, Jae-Woo (Inventor); Elliott, Jr., James R. (Inventor)

2008-01-01

105

Geometry and Cloaking Devices  

NASA Astrophysics Data System (ADS)

Recently, the application of geometry and conformal mappings to artificial materials (metamaterials) has attracted the attention in various research communities. These materials, characterized by a unique man-made structure, have unusual optical properties, which materials found in nature do not exhibit. By applying the geometry and conformal mappings theory to metamaterial science, it may be possible to realize so-called "Harry Potter cloaking device". Although such a device is still in the science fiction realm, several works have shown that by using such metamaterials it may be possible to control the direction of the electromagnetic field at will. We could then make an object hidden inside of a cloaking device. Here, we will explain how to design invisibility device using differential geometry and conformal mappings.

Ochiai, T.; Nacher, J. C.

2011-09-01

106

Tribal Training -- Sediment Devices  

USGS Multimedia Gallery

USGS Research Hydrologist Art Horowitz and USGS Oklahoma Water Science Center Hydrologic Technician Ernie Smith describe streambed sediment collection devices for a Tribal training class at the Canadian River, Norman, Oklahoma....

2010-10-01

107

Multimaterial multifunctional fiber devices  

E-print Network

Optical fibers and semiconductor devices differ significantly in their properties and their processing approaches. The latter require an assembly of metal, insulator and semiconductor materials into complex geometries with ...

Sorin, Fabien

2008-01-01

108

Multimaterial multifunctional fiber devices  

E-print Network

Recent discoveries have enabled the integration of metals, insulators and semiconductors structures into extended length of polymer fibers. The challenges and opportunities associated with this new class of fiber devices ...

Sorin, Fabien

109

Multimaterial rectifying device fibers  

E-print Network

Electronic and optoelectronic device processing is commonly thought to be incompatible with much simpler thermal drawing techniques used in optical fiber production. The incorporation of metals, polymer insulators, and ...

Orf, Nicholas D

2009-01-01

110

Device Development Process  

MedlinePLUS

... Public Meetings Comments on Current FDA Draft Guidances Listen to Webinars With FDA Experts About the Patient Representative Program MedWatch: The FDA Safety Information and Adverse Event Reporting Program Learn About Drug & Device Approval The Drug Development Process ...

111

Dielectrophoretically tunable optofluidic devices  

NASA Astrophysics Data System (ADS)

Tunable optofluidic devices exhibit some unique characteristics that are not achievable in conventional solid-state photonic devices. They provide exciting opportunities for emerging applications in imaging, information processing, sensing, optical communication, lab-on-a-chip and biomedical engineering. A dielectrophoresis effect is an important physical mechanism to realize tunable optofluidic devices. Via balancing the voltage-induced dielectric force and interfacial tension, the liquid interface can be dynamically manipulated and the optical output reconfigured or adaptively tuned in real time. Dielectrophoretically tunable optofluidic devices offer several attractive features, such as rapid prototyping, miniaturization, easy integration and low power consumption. In this review paper, we first explain the underlying operation principles and then review some recent progress in this field, covering the topics of adaptive lens, beam steering, iris, grating, optical switch/attenuator and single pixel display. Finally, the future perspectives are discussed.

Xu, Su; Ren, Hongwen; Wu, Shin-Tson

2013-12-01

112

Optical devices: A compilation  

NASA Technical Reports Server (NTRS)

Technological developments in the field of optics devices which have potential utility outside the aerospace community are described. Optical instrumentation, light generation and transmission, and laser techniques are among the topics covered. Patent information is given.

1976-01-01

113

Water-walking devices  

NASA Astrophysics Data System (ADS)

We report recent efforts in the design and construction of water-walking machines inspired by insects and spiders. The fundamental physical constraints on the size, proportion and dynamics of natural water-walkers are enumerated and used as design criteria for analogous mechanical devices. We report devices capable of rowing along the surface, leaping off the surface and climbing menisci by deforming the free surface. The most critical design constraint is that the devices be lightweight and non-wetting. Microscale manufacturing techniques and new man-made materials such as hydrophobic coatings and thermally actuated wires are implemented. Using high-speed cinematography and flow visualization, we compare the functionality and dynamics of our devices with those of their natural counterparts.

Hu, David L.; Prakash, Manu; Chan, Brian; Bush, John W. M.

2007-11-01

114

Water-walking devices  

NASA Astrophysics Data System (ADS)

We report recent efforts in the design and construction of water-walking machines inspired by insects and spiders. The fundamental physical constraints on the size, proportion and dynamics of natural water-walkers are enumerated and used as design criteria for analogous mechanical devices. We report devices capable of rowing along the surface, leaping off the surface and climbing menisci by deforming the free surface. The most critical design constraint is that the devices be lightweight and non-wetting. Microscale manufacturing techniques and new man-made materials such as hydrophobic coatings and thermally actuated wires are implemented. Using highspeed cinematography and flow visualization, we compare the functionality and dynamics of our devices with those of their natural counterparts.

Hu, David L.; Prakash, Manu; Chan, Brian; Bush, John W. M.

115

Development of electrochromic devices.  

PubMed

Electrochromic devices (ECD) are systems of considerable commercial interest due to their controllable transmission, absorption and/or reflectance. For instance, these devices are mainly applied to glare attenuation in automobile rearview mirrors and also in some smart windows that can regulate the solar gains of buildings. Other possible applications of ECDs include solar cells, small- and large-area flat panel displays, and frozen food monitoring and document authentication also are of great interest. Over the past 20 years almost 1000 patents and 1500 papers in journals and proceedings have been published with the key words "electrochromic windows". Most of these documents report on materials for electrochromic devices and only some of them about complete electrochromic devices. This paper describes the first patents and some of the recent ones on ECDs, whose development is possible due to the advances in nanotechnology. PMID:19958283

Pawlicka, A

2009-01-01

116

Thermoelectric materials and devices  

NASA Technical Reports Server (NTRS)

New thermoelectric materials comprise highly [111]-oriented twinned group IV alloys on the basal plane of trigonal substrates, which exhibit a high thermoelectric figure of merit and good material performance, and devices made with these materials.

Park, Yeonjoon (Inventor); Choi, Sang H. (Inventor); King, Glen C. (Inventor); Elliott, James R. (Inventor); Talcott, Noel A. (Inventor)

2011-01-01

117

Improvised Nuclear Device  

MedlinePLUS

... Improvised Nuclear Device (IND) is a type of nuclear weapon. When an IND explodes, it gives off four types of energy: a blast wave, intense light, heat, and radiation. The bomb dropped on Hiroshima, Japan, at the ...

118

Nanowire Thermoelectric Devices  

NASA Technical Reports Server (NTRS)

Nanowire thermoelectric devices, now under development, are intended to take miniaturization a step beyond the prior state of the art to exploit the potential advantages afforded by shrinking some device features to approximately molecular dimensions (of the order of 10 nm). The development of nanowire-based thermoelectric devices could lead to novel power-generating, cooling, and sensing devices that operate at relatively low currents and high voltages. Recent work on the theory of thermoelectric devices has led to the expectation that the performance of such a device could be enhanced if the diameter of the wires could be reduced to a point where quantum confinement effects increase charge-carrier mobility (thereby increasing the Seebeck coefficient) and reduce thermal conductivity. In addition, even in the absence of these effects, the large aspect ratios (length of the order of tens of microns diameter of the order of tens of nanometers) of nanowires would be conducive to the maintenance of large temperature differences at small heat fluxes. The predicted net effect of reducing diameters to the order of tens of nanometers would be to increase its efficiency by a factor of .3. Nanowires made of thermoelectric materials and devices that comprise arrays of such nanowires can be fabricated by electrochemical growth of the thermoelectric materials in templates that contain suitably dimensioned pores (10 to 100 nm in diameter and 1 to 100 microns long). The nanowires can then be contacted in bundles to form devices that look similar to conventional thermoelectric devices, except that a production version may contain nearly a billion elements (wires) per square centimeter, instead of fewer than a hundred as in a conventional bulk thermoelectric device or fewer than 100,000 as in a microdevice. It is not yet possible to form contacts with individual nanowires. Therefore, in fabricating a nanowire thermoelectric device, one forms contacts on nanowires in bundles of the order of 10-microns wide. The fill factor for the cross-section of a typical bundle is about 1/2. Nanowires have been grown in alumina templates with pore diameters of 100 and 40 nm.

Borshchevsky, Alexander; Fleurial, Jean-Pierre; Herman, Jennifer; Ryan, Margaret

2005-01-01

119

Semipermeable membrane devices  

SciTech Connect

In an effort to address the limitations of conventional underwater organic contaminant sampling methods, researchers at the National Fisheries Contaminant Research Center have developed and patented semi-permeable membrane devices (SPMD`s). These devices, consisting of a thin film of lipid enclosed in a flat, low density polyethylene tube, mimic the passive bioconcentration process of contaminant diffusion through biomembranes and the subsequent partitioning in an organism`s lipids.

Palowitch, A.W. [Oceaneering Advanced Technologies, Upper Marlboro, MD (United States)

1996-02-01

120

Cardiac assist device infections  

Microsoft Academic Search

Cardiac assist devices have emerged as an increasingly important option for circulatory support in patients with advanced\\u000a congestive heart failure. Infection has been the leading cause of death with use of ventricular assist devices for the past\\u000a 25 years, and continues to be a major cause of morbidity and mortality in this population. Infections may involve the internal\\u000a (blood-containing) components,

Shmuel Shoham; Leslie W. Miller

2009-01-01

121

Water-walking devices  

Microsoft Academic Search

We report recent efforts in the design and construction of water-walking machines inspired by insects and spiders. The fundamental\\u000a physical constraints on the size, proportion and dynamics of natural water-walkers are enumerated and used as design criteria\\u000a for analogous mechanical devices. We report devices capable of rowing along the surface, leaping off the surface and climbing\\u000a menisci by deforming the

David L. Hu; Manu Prakash; Brian Chan; John W. M. Bush

2007-01-01

122

Electromagnetic recording and playback device  

E-print Network

The purpose of this thesis is the design and manufacture of an electromagnetic recording and playback device. The device was designed to record information onto a steel wire which can replay the signal. The device is of ...

Chavez, Dylan, 1981-

2004-01-01

123

Devices for intradermal vaccination.  

PubMed

New insights in vaccine development, the need for safe, economic and efficient vaccine administration and the increasing mechanistic knowledge of immune responses induced by targeting the intradermal layers of the skin have all driven the engineering of devices for intradermal vaccination. In this review we highlight different delivery devices that make the epidermal and dermal layers of the skin accessible for vaccine administration. Depending on the device the desired vaccine can be applied either as a liquid formulation or as solid, powdered vaccine particles. The process of intradermal injection employs micron-sized needles that are inserted 1.5mm perpendicularly into the skin, and which inject approximately 100-200?l of a liquid vaccine formulation into the dermal skin layers. Tattoo devices, on the other hand, can be used to deliver liquid vaccine formulations into the dermal layer of the skin by the use of oscillating needles. Microneedle arrays are made of vaccine-coated solid microneedles or biodegradable microneedles. These are inserted into the dermal layers of the skin where either the vaccine coating is dissolved, or the microneedle itself dissolves in place. Jet-injectors operate by generating a high pressured stream, which flushes the liquid vaccine formulation into the deeper skin layers. Delivery devices using liquid vaccine formulations are advantageous, as established vaccine formulations can be used as provided without the need for reformulation. However, approaches that deliver vaccines in a solid form may also prove to be promising. One such method is the ballistic approach, in which solid vaccine particles or vaccine-coated gold particles are accelerated towards the skin by needle-free devices, so that the particles are deposited in the epidermal and dermal layers of the skin. These various delivery devices are explored in this review with regard to their delivery mechanism and ease of handling, their efficacy in clinical trials and their suitability for practical use. PMID:22100637

Kis, Elsa E; Winter, Gerhard; Myschik, Julia

2012-01-11

124

Photovoltaics Materials and Devices  

NASA Astrophysics Data System (ADS)

The current status of research and technology of photovoltaic materials and devices are reviewed briefly. The review includes a discussion of fundamental concepts underlying the operation of photovoltaics. Photovoltaic power sources are the best opportunity to provide energy for the world of tomorrow. The technology is changing rapidly and the price of power produced by photovoltaics is dropping while the industry is growing at 25% or more per year. Alternative renewable energy sources will provide some of our energy but photovoltaics are the most efficient at converting sunlight to useable power. A variety of technologies are available including those operating under unconcentrated and concentrated sunlight. Single junction devices are the most common, while multijunction designs are more efficient. Much of the progress in some technologies in recent years has been due primarily to a shift from single junction to multijunction devices. The performance of the devices can be understood based on conventional mathematical descriptions of diodes and the trapping and recombination of carriers. Novel technologies such as organic photovoltaics, nanoparticle devices, and photoelectrochemical cells are also under development, although these face significant obstacles. Production methods for conventional technologies include bulk crystal growth methods such as the Czochralski method and the more common thin film deposition methods are described.

Rockett, Angus

2007-11-01

125

Nonimaging radiant energy device  

DOEpatents

A nonimaging radiant energy device may include a hyperbolically shaped reflective element with a radiant energy inlet and a radiant energy outlet. A convex lens is provided at the radiant energy inlet and a concave lens is provided at the radiant energy outlet. Due to the provision of the lenses and the shape of the walls of the reflective element, the radiant energy incident at the radiant energy inlet within a predetermined angle of acceptance is emitted from the radiant energy outlet exclusively within an acute exit angle. In another embodiment, the radiant energy device may include two interconnected hyperbolically shaped reflective elements with a respective convex lens being provided at each aperture of the device.

Winston, Roland (Chicago, IL); Ning, Xiaohui (North Providence, RI)

1996-01-01

126

Nonimaging radiant energy device  

DOEpatents

A nonimaging radiant energy device may include a hyperbolically shaped reflective element with a radiant energy inlet and a radiant energy outlet. A convex lens is provided at the radiant energy inlet and a concave lens is provided at the radiant energy outlet. Due to the provision of the lenses and the shape of the walls of the reflective element, the radiant energy incident at the radiant energy inlet within a predetermined angle of acceptance is emitted from the radiant energy outlet exclusively within an acute exit angle. In another embodiment, the radiant energy device may include two interconnected hyperbolically shaped reflective elements with a respective convex lens being provided at each aperture of the device.

Winston, Roland (Chicago, IL); Ning, Xiaohui (North Providence, RI)

1993-01-01

127

Electrochromic optical switching device  

DOEpatents

An electrochromic cell is disclosed which comprises an electrochromic layer, a polymerizable organo-sulfur layer which comprises the counter electrode of the structure, and an ionically conductive electronically insulating material which comprises the separator between the electrodes. In a preferred embodiment, both the separator and the organo-sulfur electrode (in both its charged and uncharged states) are transparent either to visible light or to the entire solar spectrum. An electrochromic device is disclosed which comprises such electrodes and separator encased in glass plates on the inner surface of each of which is formed a transparent electrically conductive film in respective electrical contact with the electrodes which facilitates formation of an external electrical connection or contact to the electrodes of the device to permit electrical connection of the device to an external potential source. 3 figs.

Lampert, C.M.; Visco, S.J.

1992-08-25

128

Functional biomimetic optical devices  

NASA Astrophysics Data System (ADS)

The diversity of biological sensing and biocatalysis is astounding. A considerable effort has been directed at not only understanding the mechanism of these biological processes, but also how this activity can be maintained or duplicated in an artificial environment. We will present work on the formation of functional optical devices that convert biological responses into optical signals through changes in diffraction efficiency and reflection angle. By incorporating biomolecules into monomer systems that can be cured using a two-photon polymerization mechanism, greater spatial resolution and increased biological viability can be achieved. The polymer can be nanopatterned using ultrafast nonlinear holography to create a functional BioMEMS device. Additionally, we will discuss the characterization of the biomolecules and the processing of the gratings that incorporate these functional proteins. This approach is a first step towards the development of a hybrid organic-inorganic composite device.

Naik, Rajesh R.; Brott, Lawrence L.; Kirkpatrick, Sean M.; Stone, Morley O.

2001-11-01

129

Therapeutic Devices for Epilepsy  

PubMed Central

Therapeutic devices provide new options for treating drug-resistant epilepsy. These devices act by a variety of mechanisms to modulate neuronal activity. Only vagus nerve stimulation, which continues to develop new technology, is approved for use in the United States. Deep brain stimulation (DBS) of anterior thalamus for partial epilepsy recently was approved in Europe and several other countries. Responsive neurostimulation, which delivers stimuli to one or two seizure foci in response to a detected seizure, recently completed a successful multicenter trial. Several other trials of brain stimulation are in planning or underway. Transcutaneous magnetic stimulation (TMS) may provide a noninvasive method to stimulate cortex. Controlled studies of TMS split on efficacy, and may depend on whether a seizure focus is near a possible region for stimulation. Seizure detection devices in the form of “shake” detectors via portable accelerometers can provide notification of an ongoing tonic-clonic seizure, or peace of mind in the absence of notification. Prediction of seizures from various aspects of EEG is in early stages. Prediction appears to be possible in a subpopulation of people with refractory seizures and a clinical trial of an implantable prediction device is underway. Cooling of neocortex or hippocampus reversibly can attenuate epileptiform EEG activity and seizures, but engineering problems remain in its implementation. Optogenetics is a new technique that can control excitability of specific populations of neurons with light. Inhibition of epileptiform activity has been demonstrated in hippocampal slices, but use in humans will require more work. In general, devices provide useful palliation for otherwise uncontrollable seizures, but with a different risk profile than with most drugs. Optimizing the place of devices in therapy for epilepsy will require further development and clinical experience. PMID:22367987

Fisher, Robert S.

2011-01-01

130

Mobile Device Guide Apple iPhone Devices  

E-print Network

Mobile Device Guide ­ Apple iPhone Devices CSUF Date Last Revised: 1/20/11 Page 1 of 3 Connecting to the Campus via iPhone Exchange Client Applies to ­ Apple iPhone based devices only If you are alreadyPhone desktop. 1a. Expand `Mail, Contacts, Calendars' as shown. #12;Mobile Device Guide ­ Apple iPhone Devices

de Lijser, Peter

131

Electron Waveguide Devices  

NASA Astrophysics Data System (ADS)

This thesis explores a new frontier for electronic devices: the electron waveguide regime where the confining dimensions are made comparable to the electron wavelength and scattering is removed from the channel. Motivated by the possibility of implementing an "electron directional coupler", we study this new regime of electron transport with a novel device called a dual electron waveguide device. Such a device consists of three split-gates patterned on top of an AlGaAs/GaAs modulation-doped heterostructure. Under proper bias, two one-dimensional electron waveguides can be formed in close proximity of one another. The middle -gate which is used to control the interaction between the two waveguides is only 30 nm wide. The side-gates are used to control the number of occupied subbands in the two respective waveguides. Since these gates can be independently accessed, many different electron waveguide configurations can be implemented using this novel structure. In this thesis, we study the transport and tunneling characteristics of isolated electron waveguides, leaky electron waveguides and closely spaced electron waveguides using our novel device concept. In the tunneling spectroscopy experiments of leaky electron waveguides, we have dramatically uncovered the 1D subband structure of our electron waveguides. We have also observed for the first time 1D to 1D tunneling between two closely spaced electron waveguides. The resulting pattern in the 1D to 1D tunneling regime is consistent with the energy and momentum conservation laws in the tunneling process. In this thesis, we also investigate some of the more practical issues behind electron waveguide devices. We show how only a few local scatterers in the device can degrade the ideal electron waveguide features. We also show how the increased functionality of our dual electron waveguide devices can be used to implement an efficient analog-to-digital conversion architecture. (Copies available exclusively from MIT Libraries, Rm. 14-0551, Cambridge, MA 02139-4307. Ph. 617-253-5668; Fax 617-253-1690.).

Eugster, Cristopher Conrad

132

Precision alignment device  

DOEpatents

Apparatus for providing automatic alignment of beam devices having an associated structure for directing, collimating, focusing, reflecting, or otherwise modifying the main beam. A reference laser is attached to the structure enclosing the main beam producing apparatus and produces a reference beam substantially parallel to the main beam. Detector modules containing optical switching devices and optical detectors are positioned in the path of the reference beam and are effective to produce an electrical output indicative of the alignment of the main beam. This electrical output drives servomotor operated adjustment screws to adjust the position of elements of the structure associated with the main beam to maintain alignment of the main beam.

Jones, Nelson E. (Huntington Beach, CA)

1990-01-01

133

Adaptive Device Design  

NSDL National Science Digital Library

In this activity, learners explore the concept of how engineering has made possible the development of--and ongoing improvements to--adaptive devices that serve to help individuals with a wide range of physical challenges adapt to the world and participate fully in society. Learners investigate the engineering process to solve problems, and work in teams to improve the design of a current or proposed adaptive device. Learners start with eyeglasses, disassembling, examining component design and shape, and reassembling. Then, learners re-engineer the product seeking improvements to the current product.

Ieee

2014-05-22

134

Portable emittance measurement device  

SciTech Connect

In Institute for Theoretical and Experimental Physics (ITEP) the portable emittance measurements device is developed. It provides emittance measurements both with ''pepper-pot'' and ''two slits'' methods. Depending on the method of measurements, either slits or pepper-pot mask with scintillator are mounted on the two activators and are installed in two standard Balzer's cross chamber with CF-100 flanges. To match the angle resolution for measured beam, the length of the stainless steel pipe between two crosses changes is adjusted. The description of the device and results of emittance measurements at the ITEP ion source test bench are presented.

Liakin, D.; Seleznev, D.; Orlov, A.; Kuibeda, R.; Kropachev, G.; Kulevoy, T.; Yakushin, P. [Institute for Theoretical and Experimental Physics, Moscow 117218 (Russian Federation)

2010-02-15

135

Precision alignment device  

DOEpatents

Apparatus for providing automatic alignment of beam devices having an associated structure for directing, collimating, focusing, reflecting, or otherwise modifying the main beam. A reference laser is attached to the structure enclosing the main beam producing apparatus and produces a reference beam substantially parallel to the main beam. Detector modules containing optical switching devices and optical detectors are positioned in the path of the reference beam and are effective to produce an electrical output indicative of the alignment of the main beam. This electrical output drives servomotor operated adjustment screws to adjust the position of elements of the structure associated with the main beam to maintain alignment of the main beam. 5 figs.

Jones, N.E.

1988-03-10

136

Nanoscale Josephson Devices  

E-print Network

SQUID Superconducting Quantum Inference Device SV Spin-Valve TEM Transmission Electron Microscope UHV Ultra High Vacuum UV Ultra-Violet VSM Vibrating Sample Magnetometer xi List of Figures 1.1 Ginzburg-Landau free energy for a ferromagnet... . This technique was applied to a range of materials, including the study of c-axis Josephson junctions in the high temperature superconductor Tl2Ba2CaCu2O8, the fabrication of superconducting quantum interference devices with sub-micron loop areas, and GaN light...

Bell, Chris

137

Solar Innovator | Alta Devices  

SciTech Connect

Selected to participate in the Energy Department's SunShot Initiative, Alta Devices produces solar cells that convert sunlight into electricity at world record-breaking levels of efficiency. Through its innovative solar technology Alta is helping bring down the cost of solar. Learn more about the Energy Department's efforts to advance solar technology at energy.gov/solar .

Mattos, Laila; Le, Minh

2012-01-01

138

Radar augmentation device  

NASA Technical Reports Server (NTRS)

The radar augmentation device (RAD) serves to increase the radar response of a target body and thus expedite radar acquisition. The design and development of the RAD are discussed with particular emphasis on technical problems that were encountered and solved. Discussions of the mode of operation of the RAD and the ground test history are also included.

Riedel, J. K.

1972-01-01

139

Medical Device Reliability BIOMATERIALS  

E-print Network

of the U.S. healthcare industry, with annual sales exceeding $13 billion. In the past decade, nearly 3 Laboratory The iNEMI Medical Technology Integration Group, which includes NIST, has produced a number of documents that advance our long-term goal of better standards for medical device technology. These include

140

Stellarator and Heliotron Devices  

Microsoft Academic Search

Stellarators and tokamaks are the most advanced devices that have been developed for magnetic fusion applications. The two approaches have much in common; tokamaks have received the most attention because their axisymmetry justifies the use of simpler models and provides a more forgiving geometry. However, recent advances in treating more complicated three dimensional systems have made it possible to design

John L. Johnson

1999-01-01

141

Heater device control  

Microsoft Academic Search

This patent describes a heating device including a combustion chamber for burning a selected fuel; an outer casing surrounding a portion of the combustion chamber and defining a plenum chamber therebetween having an ambient air inlet and a heated air outlet to emit air from the plenum chamber after the air has been heated by contact with the combustion chamber;

1986-01-01

142

Human performance measuring device  

NASA Technical Reports Server (NTRS)

Complex coordinator, consisting of operator control console, recorder, subject display panel, and limb controls, measures human performance by testing perceptual and motor skills. Device measures psychophysiological functions in drug and environmental studies, and is applicable to early detection of psychophysiological body changes.

Michael, J.; Scow, J.

1970-01-01

143

Spring Type Dogging Device.  

National Technical Information Service (NTIS)

The patent application describes a clamping device for securing a workpiece such as an electronic package to a support such as a heat sink. A curved slot is machined around a central opening in the body of a configurated flat metal clamp having an extendi...

J. A. Rew

1976-01-01

144

Phononic crystal devices  

Microsoft Academic Search

Phononic crystals that have the ability to modify and control the thermal black body phonon distribution and the phonon component of heat transport in a solid. In particular, the thermal conductivity and heat capacity can be modified by altering the phonon density of states in a phononic crystal. The present invention is directed to phononic crystal devices and materials such

Ihab F. El-Kady; Roy H. Olsson

2012-01-01

145

Solar Innovator | Alta Devices  

ScienceCinema

Selected to participate in the Energy Department's SunShot Initiative, Alta Devices produces solar cells that convert sunlight into electricity at world record-breaking levels of efficiency. Through its innovative solar technology Alta is helping bring down the cost of solar. Learn more about the Energy Department's efforts to advance solar technology at energy.gov/solar .

Mattos, Laila; Le, Minh

2013-05-29

146

Programmable ubiquitous telerobotic devices  

NASA Astrophysics Data System (ADS)

We are investigating a field of research that we call ubiquitous telepresence, which involves the design and implementation of low-cost robotic devices that can be programmed and operated from anywhere on the Internet. These devices, which we call ubots, can be used for academic purposes (e.g., a biologist could remote conduct a population survey), commercial purposes (e.g., a house could be shown remotely by a real-estate agent), and for recreation and education (e.g., someone could tour a museum remotely). We anticipate that such devices will become increasingly common due to recent changes in hardware and software technology. In particular, current hardware technology enables such devices to be constructed very cheaply (less than $500), and current software and network technology allows highly portable code to be written and downloaded across the Internet. In this paper, we present our prototype system architecture, and the ubot implementation we have constructed based on it. The hardware technology we use is the handy board, a 6811-based controller board with digital and analog inputs and outputs. Our software includes a network layer based on TCP/IP and software layers written in Java. Our software enables users across the Internet to program the behavior of the vehicle and to receive image feedback from a camera mounted on it.

Doherty, Michael; Greene, Matthew; Keaton, David; Och, Christian; Seidl, Matthew L.; Waite, William; Zorn, Benjamin G.

1997-12-01

147

Solar energy device  

Microsoft Academic Search

A solar energy device is described for converting solar energy to a usable form of energy which includes a solar energy collector arranged adjacent a solar energy collector surface in sun energy transferring relation and tracking means to orient the face in perpendicular relationship to the sun rays.

1977-01-01

148

Portable laser device  

SciTech Connect

A device for producing a laser beam or discharge is disclosed. The device is constructed to be portable having a pistol grip. The laser beam is generated in the body or barrel of the device. A neodymium (Nd:yag) rod or similar material is within a xenon flash tube to which a voltage is applied. A photon emission source is provided at one end of the (Nd:yag) rod embodying a diode and a parabolic reflector system associated with a polarized mirror which is partly reflective and which in part transmits energy rays. A polarized optical mirror is provided at the opposite end of the (Nd:yag) rod. Activation of atoms within the rod is initiated within the contents of an optical or resonant cavity providing a means by which the necessary excitation of atoms within the optical active (Nd:yag) rod can be achieved in order to initiate an elevation in population and subsequent inversion of levels, near and over the threshold value necessary to generate a laser beam and the subsequent discharge of said beam. Heat dissipating means are provided including nylon phenolic quartz acrylic compound constructed to have a heat transfer gradient. Embedded in the compound is heat transfer means provided by longitudinally positioned microcoil heat pipes whereby the heat is transferred to the rear of the device. At the rear is positioned a heat dissipating cube formed by parallel plates with microcoil heat pipes between them. The evolution of heat is initiated by the transference of heat from the microcoiled heat pipes to the nylon phenolic quartz compound, which subsequently vaporizes as heat is absorbed by the compound, the vapor being released at various portal exits or microvents aft of the laser device.

Rosenberg, L.

1981-06-30

149

[Mechanical resuscitation assist devices].  

PubMed

In Germany 100,000-160,000 people suffer from out-of-hospital cardiac arrest (OHCA) annually. The incidence of cardiopulmonary resuscitation (CPR) after OHCA varies between emergency ambulance services but is in the range of 30-90 CPR attempts per 100,000 inhabitants per year. Basic life support (BLS) involving chest compressions and ventilation is the key measure of resuscitation. Rapid initiation and quality of BLS are the most critical factors for CPR success. Even healthcare professionals are not always able to ensure the quality of CPR measures. Consequently in recent years mechanical resuscitation devices have been developed to optimize chest compression and the resulting circulation. In this article the mechanical resuscitation devices currently available in Germany are discussed and evaluated scientifically in context with available literature. The ANIMAX CPR device should not be used outside controlled trials as no clinical results have so far been published. The same applies to the new device Corpuls CPR which will be available on the market in early 2014. Based on the current published data a general recommendation for the routine use of LUCAS™ and AutoPulse® CPR cannot be given. The preliminary data of the CIRC trial and the published data of the LINC trial revealed that mechanical CPR is apparently equivalent to good manual CPR. For the final assessment further publications of large randomized studies must be analyzed (e.g. the CIRC and PaRAMeDIC trials). However, case control studies, case series and small studies have already shown that in special situations and in some cases patients will benefit from the automatic mechanical resuscitation devices (LUCAS™, AutoPulse®). This applies especially to emergency services where standard CPR quality is far below average and for patients who require prolonged CPR under difficult circumstances. This might be true in cases of resuscitation due to hypothermia, intoxication and pulmonary embolism as well as for patients requiring transport or coronary intervention when cardiac arrest persists. Three prospective randomized studies and the resulting meta-analysis are available for active compression-decompression resuscitation (ACD-CPR) in combination with an impedance threshold device (ITD). These studies compared ACD-ITD-CPR to standard CPR and clearly demonstrated that ACD-ITD-CPR is superior to standard CPR concerning short and long-term survival with good neurological recovery after OHCA. PMID:24569931

Fischer, M; Breil, M; Ihli, M; Messelken, M; Rauch, S; Schewe, J-C

2014-03-01

150

Support and maneuvering device  

DOEpatents

A support and maneuvering device includes an elongated flexible inflatable enclosure having a fixed end and a movable end. The movable end is collapsible toward the fixed end to a contracted position when the enclosure is in a noninflated condition. Upon inflation, the movable end is movable away from the fixed end to an extended position. The movable end includes means for mounting an article such as a solar reflector thereon. The device also includes a plurality of position controlling means disposed about the movable end to effect adjusting movement of portions thereof by predetermined amounts and for controlling an angle at which the article disposed at the movable end is oriented. The plurality of position controlling means limits a suitable number degrees of freedom of the movable end for transmitting a steering motion thereto and for controlling the position thereof.

Wood, Richard L. (Arvada, CO)

1988-01-01

151

Light modulating device  

DOEpatents

In a device for transmitting light, means for controlling the transmissivity of the device, including a ceramic, reversibly electrochromic, crystalline element having a highly reflective state when injected with electrons and charge compensating ions and a highly transmissive state when the electrons and ions are removed, the crystalline element being characterized as having a reflectivity of at least 50% in the reflective state and not greater than 10% in the transmissive state, and means for modulating the crystalline element between the reflective and transmissive states by injecting ions into the crystalline element in response to an applied electrical current of a first polarity and removing the ions in response to an applied electrical current of a second polarity.

Rauh, R. David (Newton, MA); Goldner, Ronald B. (Lexington, MA)

1989-01-01

152

/Pt RRAM device  

NASA Astrophysics Data System (ADS)

The total ionizing dose (TID) effects of 60Co ? ray radiation on the resistive random access memory (RRAM) devices with the structure of Ag/AlO x /Pt were studied. The resistance in low resistance state (LRS), set voltage, and reset voltage are almost immune to radiation, whereas the initial resistance, resistance at high resistance state (HRS), and forming voltage were significantly impacted after radiation due to the radiation-induced holes. A novel hybrid filament model is proposed to explain the radiation effects, presuming that holes are co-operated with Ag ions to build filaments. In addition, the thermal coefficients of the resistivity in LRS can support this hybrid filament model. The Ag/AlO x /Pt RRAM devices exhibit radiation immunity to a TID up to 1 Mrad(Si) and are highly suitable for radiation-hard electronics applications.

Yuan, Fang; Zhang, Zhigang; Wang, Jer-Chyi; Pan, Liyang; Xu, Jun; Lai, Chao-Sung

2014-08-01

153

Urine collection device  

NASA Technical Reports Server (NTRS)

A urine collection device for females is described. It is comprised of a collection element defining a urine collection chamber and an inlet opening into the chamber and is adapted to be disposed in surrounding relation to the urethral opening of the user. A drainage conduit is connected to the collection element in communication with the chamber whereby the chamber and conduit together comprise a urine flow pathway for carrying urine generally away from the inlet. A first body of wicking material is mounted adjacent the collection element and extends at least partially into the flow pathway. The device preferably also comprise a vaginal insert element including a seal portion for preventing the entry of urine into the vagina.

Michaud, R. B. (inventor)

1981-01-01

154

Quick stop device  

DOEpatents

A quick stop device for abruptly interrupting the cutting of a workpiece by a cutter is disclosed. The quick stop device employs an outer housing connected to an inner workpiece holder by at least one shear pin. The outer housing includes an appropriate shank designed to be received in the spindle of a machine, such as a machine tool. A cutter, such as a drill bit, is mounted in a stationary position and the workpiece, mounted to the workpiece holder, is rotated during engagement with the cutter. A trigger system includes at least one spring loaded punch disposed for movement into engagement with the workpiece holder to abruptly stop rotation of the workpiece holder. This action shears the shear pin and permits continued rotation of the spindle and outer housing without substantially disturbing the chip root formed during cutting.

Hipwell, Roger L. (35 Hounds Ditch La., Duxbury, MA 02332); Hazelton, Andrew J. (3877 Army St., San Francisco, CA 94131)

1996-01-01

155

Principles of Semiconductor Devices  

NSDL National Science Digital Library

Home page of an online and interactive textbook, Principles of Semiconductor Devices., written by Bart J. Van Zeghbroeck, Ph.D., Professor in the Department of Electrical and Computer Engineering at the University of Colorado at Boulder. The goal of this text is to provide the basic principles of common semiconductor devices, with a special focus on Metal-Oxide-Semiconductor Field-Effect-Transistors (MOSFETs). A browser environment was chosen so that text, figures and equations can be linked for easy reference. A table of contents, a glossary, active figures and some study aids are integrated with the text with the intention to provide a more effective reference and learning environment. Chapter titles include: Semiconductor Fundamentals, Metal-Semiconductor Junctions, p-n Junctions, Bipolar Transistors, MOS Capacitors, and MOSFET.

Van Zeghbroeck, Bart J.

2011-06-13

156

Support and maneuvering device  

DOEpatents

A support and maneuvering device includes an elongated flexible inflatable enclosure having a fixed end and a movable end. The movable end is collapsible toward the fixed end to a contracted position when the enclosure is in a noninflated condition. Upon inflation, the movable end is movable away from the fixed end to an extended position. The movable end includes means for mounting an article such as a solar reflector thereon. The device also includes a plurality of position controlling means disposed about the movable end to effect adjusting movement of portions thereof by predetermined amounts and for controlling an angle at which the article disposed at the movable end is oriented. The plurality of position controlling means limits a suitable number degrees of freedom of the movable end for transmitting a steering motion thereto and for controlling the position thereof. 9 figs.

Wood, R.L.

1987-03-23

157

Regenerative braking device  

SciTech Connect

Disclosed are several embodiments of a regenerative braking device for an automotive vehicle. The device includes a plurality of rubber rollers (24, 26) mounted for rotation between an input shaft (14) connectable to the vehicle drivetrain and an output shaft (16) which is drivingly connected to the input shaft by a variable ratio transmission (20). When the transmission ratio is such that the input shaft rotates faster than the output shaft, the rubber rollers are torsionally stressed to accumulate energy, thereby slowing the vehicle. When the transmission ratio is such that the output shaft rotates faster than the input shaft, the rubber rollers are torsionally relaxed to deliver accumulated energy, thereby accelerating or driving the vehicle.

Hoppie, Lyle O. (Birmingham, MI)

1982-01-12

158

Light modulating device  

DOEpatents

In a device for transmitting light, means for controlling the transmissivity of the device, including a ceramic, reversibly electrochromic, crystalline element having a highly reflective state when injected with electrons and charge compensating ions and a highly transmissive state when the electrons and ions are removed, the crystalline element being characterized as having a reflectivity of at least 50% in the reflective state and not greater than 10% in the transmissive state, and means for modulating the crystalline element between the reflective and transmissive states by injecting ions into the crystalline element in response to an applied electrical current of a first polarity and removing the ions in response to an applied electrical current of a second polarity are disclosed. 1 fig.

Rauh, R.D.; Goldner, R.B.

1989-12-26

159

Air filtering device  

SciTech Connect

This patent describes a room air cleaning device. It comprises: a box housing having an air inlet and an air outlet provided therein; a vertical baffle coupled to the box housing opposite the air outlet and spaced form the box housing such that an air egress outlet is formed between the vertical baffle and the box housing; air cleansing means substantially disposed within the box housing and cleansing air passing into the inlet and out of the air egress outlet; a fan disposed within the box housing, the fan providing air movement through the air inlet and the air egress outlet; wherein air exits the room air cleaning device through the air egress outlet as a vertical plane of moving air; and wherein formation of the vertical plane of moving air contributes to the formation of a low pressure area drawing impure air toward the air inlet.

Backus, A.L.

1992-07-28

160

Thermal Remote Anemometer Device  

NASA Technical Reports Server (NTRS)

Thermal Remote Anemometer Device developed for remote, noncontacting, passive measurement of thermal properties of sample. Model heated locally by scanning laser beam and cooled by wind in tunnel. Thermal image of model analyzed to deduce pattern of airflow around model. For materials applications, system used for evaluation of thin films and determination of thermal diffusivity and adhesive-layer contact. For medical applications, measures perfusion through skin to characterize blood flow and used to determine viabilities of grafts and to characterize tissues.

Heyman, Joseph S.; Heath, D. Michele; Winfree, William P.; Miller, William E.; Welch, Christopher S.

1988-01-01

161

Stand alone ignition devices  

Microsoft Academic Search

Besides restoring traditional independence from outside power sources, stand-alone ignition devices for domestic gas appliances would reduce maintenance and installation costs. A comprehensive literature survey, along with a manufacturer evaluation, identified both new and state-of-the-art concepts for stand-alone systems. The survey's objective criteria included overall feasibility, applicability, reliability, cost\\/benefit ratio, environmental impact, and safety. The evaluation determined the best short-term

Topping

1981-01-01

162

Semiconductor device reliability  

Microsoft Academic Search

Recent advances in reliability (R) testing and analysis for semiconductor components are discussed in reviews and reports. Topics addressed include R models and failure mechanisms, failure analysis, optoelectronic R, compound-semiconductor R, high-speed-circuit R, R stress screening, and lifetime extrapolation and test standardization. Consideration is given to temperature and use-condition effects on LED degradation, screening and burn-in of electrooptic devices, R

A. Christou; B. A. Unger

1990-01-01

163

Temperature measuring device  

SciTech Connect

Systems and methods are described for a wireless instrumented silicon wafer that can measure temperatures at various points and transmit those temperature readings to an external receiver. The device has particular utility in the processing of semiconductor wafers, where it can be used to map thermal uniformity on hot plates, cold plates, spin bowl chucks, etc. without the inconvenience of wires or the inevitable thermal perturbations attendant with them.

Lauf, R.J.; Bible, D.W.; Sohns, C.W.

1999-10-19

164

Mechanical devices: A compilation  

NASA Technical Reports Server (NTRS)

A collection of new technology items that should be of interest to mechanical engineers, machinists, and others who design or work with mechanical devices was described. Section 1 contains articles on several new or modified tools, Section 2 describes a number of specialized mechanical systems, and the last section is devoted to valves, bearings, and other parts that might be used with larger systems. The last patent information available is also given.

1976-01-01

165

Alignment reference device  

DOEpatents

An alignment reference device provides a collimated laser beam that minimizes angular deviations therein. A laser beam source outputs the beam into a single mode optical fiber. The output end of the optical fiber acts as a source of radiant energy and is positioned at the focal point of a lens system where the focal point is positioned within the lens. The output beam reflects off a mirror back to the lens that produces a collimated beam.

Patton, Gail Y. (Sunnyvale, CA); Torgerson, Darrel D. (Palo Alto, CA)

1987-01-01

166

Digital radiography device  

Microsoft Academic Search

This patent describes an apparatus for taking a radiograph of a stationary patient comprising a moving fan beam of x-rays defined by an x-ray source and a moving prescatter collimator slit located between the x-ray source and the stationary patient, and at least one proximity type x-ray image intensifier device for the detection of the x-rays. The proximity type x-ray

1987-01-01

167

Residual gas analysis device  

DOEpatents

A system is provided for testing the hermeticity of a package, such as a microelectromechanical systems package containing a sealed gas volume, with a sampling device that has the capability to isolate the package and breach the gas seal connected to a pulse valve that can controllably transmit small volumes down to 2 nanoliters to a gas chamber for analysis using gas chromatography/mass spectroscopy diagnostics.

Thornberg, Steven M. (Peralta, NM)

2012-07-31

168

76 FR 8637 - Medical Devices; Medical Device Data Systems  

Federal Register 2010, 2011, 2012, 2013

...for purposes of the MDR system, establishment registration and device listing, reports...suggested that devices that comprise a virtual system--for example, a blood pressure...of enforcement discretion will not be permanent. The regulatory alternatives are...

2011-02-15

169

Double face sealing device  

NASA Technical Reports Server (NTRS)

A double face sealing device is disclosed for mounting between two surfaces to provide an air-tight and fluid-tight seal between a closure member bearing one of the surfaces and a structure or housing bearing the other surface which extends around the opening or hatchway to be closed. The double face sealing device includes a plurality of sections or segments mounted to one of the surfaces, each having a main body portion, a pair of outwardly extending and diverging, cantilever, spring arms, and a pair of inwardly extending and diverging, cantilever, spring arms, an elastomeric cover on the distal, free ends of the outwardly extending and diverging spring arms, and an elastomeric cover on the distal, free, ends of the outwardly extending and diverging spring arms, and an elastomeric cover on the distal, free ends of the inwardly extending and diverging spring arms. The double face sealing device has application or use in all environments requiring a seal, but is particularly useful to seal openings or hatchways between compartments of spacecraft or aircraft.

Weddendorf, Bruce (inventor)

1991-01-01

170

Devices of Wonder  

NSDL National Science Digital Library

The Getty Museum cleverly uses our new media toy, the World Wide Web, to showcase this exhibition of media devices from the past and present. Included are inventions that present visual information or optical illusions, such as Indonesian shadow puppets, magic lantern slides, pop-up books, thaumatropes, and anamorphic images. Both animated and non-animated versions are available, and there are tradeoffs with each. In the animated version, users can see each device in action, but it takes a little longer to simply get each device's name and information about how it works. For example, the animated thaumatrope works pretty well, since it is easy to see that it is a card with two images on the back and front that fuse when the card is spun on a string. It's a little harder to figure out how the choreutoscope works from starting with the animated version, although one gets to watch the skeleton dance. The non-animated version immediately informs us that this is a hand-cranked magic lantern slide.

2001-01-01

171

Multiple equilibrium laboratory devices  

NASA Astrophysics Data System (ADS)

Devices{* } will be demonstrated and videotapes played of a number of laboratory studies that exhibit multiple equilibrium. All devices have two competing effects driving the flow. In two of them, temperature and salinity oppose each other. In another, air and water compete. In a fourth, wave propagation is opposed by inertia. Connection with hypothesized ocean behavior will be made. {* } Whitehead, J. A. 2000 Stratified Convection with Multiple States. Ocean Modelling, 2, 109-121. Whitehead, J. A. W. Gregory Lawson and John Salzig. 2001 Multistate flow devices for geophysical fluid dynamics and climate. American Journal of Physics, 69 546-553. Whitehead, J. A. and P. G. Baines. 2000. Hydraulic Jump Location as a Multiple Equilibrium feature. 2000 Ocean Sciences Meeting, American Geophysical Union, San Antonio Texas, January 25, 2000. Abstract: EOS 80 #46 (Supplement), OS125. Whitehead, J. A. , M. L. E. Timmermans, W. Gregory Lawson, S. N. Bulgakov, A. M. Zatarian, J. F. A. Medina, and John Salzig, Laboratory studies of thermally and/or Salinity-driven flows with partial mixing: Part 1 Stommel transitions and multiple flow states. In preparation

Whitehead, J. A.

2001-12-01

172

The Columbus device  

NASA Astrophysics Data System (ADS)

The Columbus device [1] is proposed as one component of a spectrum of experiments needed to explore the physics of fusion burning plasmas. Columbus has a larger volume than Ignitor by about 50%, lower current densities in the magnet systems and capability to sustain longer plasma pulses. The machine preserves the ability to confine, under macroscopically stable conditions, plasmas with peak pressures exceeding 3 MPa, corresponding to ignition at central plasma densities around 10^21 nuclei/m^3 and to reach this regime by ohmic heating alone. The presence of an ICRH system will expand the capabilities of the device. In our opinion, a spectrum of ``Science First'' devices is the only viable path to an efficient fusion program development and plasma ignition is an important milestone to be achieved before undertaking the construction of a Demo reactor requiring minimization of the external heating power. The Iter design envisages that about one third of its heating power be supplied from the outside in order to maintain its plasma pressure at the desired values. The Columbus program is proposed as a U.S. counterpart to the Ignitor project conducted in Italy and to be complementary to it. The machine costs can be minimized by incorporating the main engineering solutions devised for Ignitor. [1] Coppi,B. and Salvetti,M.,``Highlights of the Columbus Concept'', M.I.T. Report, PTP02/06 (2002).

Salvetti, Matteo

2005-10-01

173

Thermophotovoltaic energy conversion device  

DOEpatents

A thermophotovoltaic device and a method for making the thermophotovoltaic device are disclosed. The device includes an n-type semiconductor material substrate having top and bottom surfaces, a tunnel junction formed on the top surface of the substrate, a region of active layers formed on top of the tunnel junction and a back surface reflector (BSR). The tunnel junction includes a layer of heavily doped n-type semiconductor material that is formed on the top surface of the substrate and a layer of heavily doped p-type semiconductor material formed on the n-type layer. An optional pseudomorphic layer can be formed between the n-type and p-type layers. A region of active layers is formed on top of the tunnel junction. This region includes a base layer of p-type semiconductor material and an emitter layer of n-type semiconductor material. An optional front surface window layer can be formed on top of the emitter layer. An optional interference filter can be formed on top of the emitter layer or the front surface window layer when it is used. 1 fig.

Charache, G.W.; Baldasaro, P.F.; Egley, J.L.

1998-05-19

174

Thermophotovoltaic energy conversion device  

DOEpatents

A thermophotovoltaic device and a method for making the thermophotovoltaic device. The device includes an n-type semiconductor material substrate having top and bottom surfaces, a tunnel junction formed on the top surface of the substrate, a region of active layers formed on top of the tunnel junction and a back surface reflector (BSR). The tunnel junction includes a layer of heavily doped n-type semiconductor material that is formed on the top surface of the substrate and a layer of heavily doped p-type semiconductor material formed on the n-type layer. An optional pseudomorphic layer can be formed between the n-type and p-type layers. A region of active layers is formed on top of the tunnel junction. This region includes a base layer of p-type semiconductor material and an emitter layer of n-type semiconductor material. An optional front surface window layer can be formed on top of the emitter layer. An optional interference filter can be formed on top of the emitter layer or the front surface window layer when it is used.

Charache, Greg W. (Clifton Park, NY); Baldasaro, Paul F. (Clifton Park, NY); Egley, James L. (Burnt Hills, NY)

1998-01-01

175

Barriers to medical device innovation  

PubMed Central

The US Food and Drug Administration (FDA) has defined a medical device as a health care product that does not achieve it’s purpose by chemical action or by being metabolized. This means that a vast number of products are considered medical devices. Such devices play an essential role in the practice of medicine. The FDA classifies medical devices in three classes, depending on the risk of the device. Since Class I and II devices have relatively simple requirements for getting to the market, this review will focus on “implantable devices”, which, in general, belong to Class III. The European Union and Canada use a slightly different classification system. While early generations of medical devices were introduced without much testing, either technical or clinical, the process of introducing a Class III medical device from concept to clinical practice has become strongly regulated and requires extensive technological and clinical testing. The modern era of implantable medical devices may be considered to have started in the 1920s with development of artificial hips. The implantable pacemaker was another milestone and pacemakers and cardioverters/defibrillators have since saved millions of lives and created commercial giants in the medical device industry. This review will include some examples of cardiovascular devices. Similar considerations apply to the total implantable device market, although clinical and technological applications obviously vary considerably. PMID:24966699

Bergsland, Jacob; Elle, Ole Jakob; Fosse, Erik

2014-01-01

176

Nanoscale Electronic Devices  

NASA Astrophysics Data System (ADS)

Continuous downscaling in microelectronics has pushed conventional CMOS technology to its physical limits, while Moore's Law has correctly predicted the trend for decades, each step forward is accompanied with unprecedented technological difficulties and near-exponential increase in cost. At the same time, however, demands for low-power, low-cost and high-speed devices have never diminished, instead, even more stringent requirements have been imposed on device performances. It is therefore crucial to explore alternative materials and device architectures in order to alleviate the pressure caused by downscaling. To this end, we investigated two different approaches: (1) InSb nanowire based field effect transistors (NWFETs) and (2) single walled carbon nanotube (SWCNT) -- peptide nucleic acid (PNA) --SWCNT conjugate. Two types of InSb nanowires were synthesized by template-assisted electrochemistry and chemical vapor deposition (CVD) respectively. In both cases, NWFETs were fabricated by electron beam lithography (EBL) and crystallinity was confirmed by transmission electron microscopy (TEM) and selected area diffraction (SAD) patterns. For electrochemistry nanowire, ambipolar conduction was observed with strong p-type conduction, the effect of thermal annealing on the conductivity was analyzed, a NWFET model that took into consideration the underlapped region in top-gated NWFET was proposed. Hole mobility in the channel was calculated to be 292.84 cm2V-1s -1 with a density of 1.5x1017/cm3. For CVD nanowire, the diameter was below 40nm with an average of 20nm. Vapor-liquid-solid (VLS) process was speculated to be the mechanism responsible for nanowire growth. The efficient gate control was manifested by high ION/I OFF ratio which was on the order of 106 and a small inverse subthreshold slope (<200 mV/decade). Scale analysis was used to successfully account for disparities observed among a number of sample devices. N-type conduction was found in all NWFETs with electron mobility between 110 cm2?V -1?s-1 and 169 cm2?V -1?s-1. In the approach of SWCNT-PNA-SWCNT conjugate, we chemically functionalized single walled carbon nanotubes to synthesize the conjugate and characterized its electrical properties. Negative differential resistance (NDR) was observed consistently at different temperatures and the mechanism was explained through the energy band diagram in which NDR effect was caused by misalignment between Fermi energy level at the source and resonance states in the potential well. The consistent NDR effect shows possible application for microelectronic devices.

Jing, Xiaoye

177

Medical Device Interoperability The lack of interoperability between medical devices  

E-print Network

to preventable medical errors and potentially serious inefficiencies that could otherwise be avoided. OverviewMedical Device Interoperability The lack of interoperability between medical devices can lead an accurate diagnostic and treatment discipline, medical devices are playing an ever-increasing role

178

16 CFR 1507.9 - Toy smoke devices and flitter devices.  

Code of Federal Regulations, 2010 CFR

...2 2010-01-01 2010-01-01 false Toy smoke devices and flitter devices. 1507...REGULATIONS FIREWORKS DEVICES § 1507.9 Toy smoke devices and flitter devices. (a) Toy smoke devices shall be so constructed...

2010-01-01

179

76 FR 45860 - In the Matter of Certain Electronic Devices, Including Wireless Communication Devices, Portable...  

Federal Register 2010, 2011, 2012, 2013

...Wireless Communication Devices, Portable Music and Data Processing Devices, and Tablet...wireless communication devices, portable music and data processing devices, and tablet...wireless communication devices, portable music and data processing devices, and...

2011-08-01

180

77 FR 60720 - Certain Electronic Devices, Including Wireless Commmunication Devices, Portable Music and Data...  

Federal Register 2010, 2011, 2012, 2013

...Devices, Including Wireless Commmunication Devices, Portable Music and Data Processing Devices, and Tablet Computers; Notice...devices, including wireless communication devices, portable music and data processing devices, and tablet computers,...

2012-10-04

181

77 FR 70464 - Certain Electronic Devices, Including Wireless Communication Devices, Portable Music and Data...  

Federal Register 2010, 2011, 2012, 2013

...Devices, Including Wireless Communication Devices, Portable Music and Data Processing Devices, and Tablet Computers; Notice...devices, including wireless communication devices, portable music and data processing devices, and tablet computers, by...

2012-11-26

182

78 FR 34669 - Certain Electronic Devices, Including Wireless Communication Devices, Portable Music and Data...  

Federal Register 2010, 2011, 2012, 2013

...Wireless Communication Devices, Portable Music and Data Processing Devices, and Tablet...wireless communication devices, portable music and data processing devices, and tablet...wireless communication devices, portable music and data processing devices, and...

2013-06-10

183

77 FR 51571 - Certain Wireless Communication Devices, Portable Music and Data Processing Devices, Computers...  

Federal Register 2010, 2011, 2012, 2013

...Wireless Communication Devices, Portable Music and Data Processing Devices, Computers...Wireless Communication Devices, Portable Music and Data Processing Devices, Computers...wireless communication devices, portable music and data processing devices,...

2012-08-24

184

77 FR 58576 - Certain Wireless Communication Devices, Portable Music and Data Processing Devices, Computers...  

Federal Register 2010, 2011, 2012, 2013

...Wireless Communication Devices, Portable Music and Data Processing Devices, Computers...wireless communication devices, portable music and data processing devices, computers...wireless communication devices, portable music and data processing devices,...

2012-09-21

185

78 FR 16865 - Certain Electronic Devices, Including Wireless Communication Devices, Portable Music and Data...  

Federal Register 2010, 2011, 2012, 2013

...Devices, Including Wireless Communication Devices, Portable Music and Data Processing Devices, and Tablet Computers; Investigations...devices, including wireless communication devices, portable music and data processing devices, and tablet computers, by...

2013-03-19

186

Reprocessing of Reusable Medical Devices  

MedlinePLUS

... acquiring such an infection from an inadequately reprocessed medical device is relatively low given the large number of such devices in use, although the potential for outbreaks of infection associated with their use remains an ...

187

Nonimaging radiant energy direction device  

DOEpatents

A raidant energy nonimaging light direction device is provided. The device includes an energy transducer and a reflective wall whose contour is particularly determined with respect to the geometrical vector flux of a field associated with the transducer.

Winston, Roland (Chicago, IL)

1980-01-01

188

Electronic Computers and Analog Devices.  

National Technical Information Service (NTIS)

The handbook presents a classification of electronic and analog computers and analog devices, including descriptions, basic technical features and fields of application of domestically-manufactured universal digital computers, digital control devices, dig...

V. I. Grubov, V. S. Kirdan

1971-01-01

189

Engine heating device. Final report  

Microsoft Academic Search

The engine heating device development project was supported by DOE grant No. DE-FG01-82CE15141. The engine heating device is a device which recovers waste engine exhaust heat and stores it for later use in rewarming the cold engine prior to starting. Heat is stored in the phase change and sensible heat capacity of a storage material. This device finds application in

1986-01-01

190

Improved Thermoelectric Devices: Advanced Semiconductor Materials for Thermoelectric Devices  

SciTech Connect

Broad Funding Opportunity Announcement Project: Phononic Devices is working to recapture waste heat and convert it into usable electric power. To do this, the company is using thermoelectric devices, which are made from advanced semiconductor materials that convert heat into electricity or actively remove heat for refrigeration and cooling purposes. Thermoelectric devices resemble computer chips, and they manage heat by manipulating the direction of electrons at the nanoscale. These devices aren’t new, but they are currently too inefficient and expensive for widespread use. Phononic Devices is using a high-performance, cost-effective thermoelectric design that will improve the device’s efficiency and enable electronics manufacturers to more easily integrate them into their products.

None

2009-12-11

191

Motorcycle towing device  

US Patent & Trademark Office Database

A motorcycle towing device includes a substantially vertical member and a substantially horizontal member being interconnected for supporting a motorcycle wheel. A support column is pivotably and releasably mounted on at least one of the members, such as with a removable hinge pin passing through holes in the support column and in brackets on the support column. A draw bar is connected to the support column for insertion into a receiver mounted on a vehicle and at least one shim is disposed between the draw bar and the receiver.

2009-05-26

192

Resistive Exercise Device  

NASA Technical Reports Server (NTRS)

An exercise device 10 is particularly well suited for use in low gravity environments, and includes a frame 12 with plurality of resistance elements 30,82 supported in parallel on the frame. A load transfer member 20 is moveable relative to the frame for transferring the applied force to the free end of each captured resistance element. Load selection template 14 is removably secured both to the load transfer member, and a plurality of capture mechanisms engage the free end of corresponding resistance elements. The force applying mechanism 53 may be a handle, harness or other user interface for applying a force to move the load transfer member.

Smith, Damon C. (Inventor)

2005-01-01

193

Oil reclamation device  

SciTech Connect

An oil reclamation device comprises a housing, filter, evaporator plate and heating assembly. The housing has a longitudinal axis and includes an oil inlet to receive oil to be reclaimed and an oil outlet to discharge reconditioned oil. The filter is disposed at one end of the housing to define a mechanical filtration zone which receives the oil from the oil inlet of the device. The evaporator plate is disposed within the housing adjacent the mechanical filtration zone. The heating assembly is disposed at the open end of the housing adjacent the evaporator plate to define an evaporation chamber therebetween. The evaporator plate includes upwardly projecting evaporation walls defining a plurality of curved vaporizing surfaces laterally displaced radially with respect to each other to form a fluid traveling surface therebetween. The heating assembly includes downwardly projecting heating walls defining a plurality of curved heating surfaces located between the curved vaporizing surfaces. The evaporation walls and the heating walls define a plurality of curved paths along the fluid traveling surface from the longitudinal axis of the housing outwardly along the evaporator plate. Evaporator plate includes passageways extending from the mechanical filtration zone to deliver substantially all of the oil being treated at a centermost portion of the evaporator plate. The evaporation walls and the heating walls provide a structural configuration effective to guide the oil from the centermost portion of the plate outwardly along the curved paths to the oil outlet of the housing.

Engel, G.C.

1980-10-14

194

Devices as destination therapy.  

PubMed

The use of circulatory support as destination therapy has been a goal for the treatment of endstage heart failure for several decades. Current investigations are evaluating several circulatory pumps with that particular objective. With continued modification of design, the current and future pumps will become more reliable and provide improved quality of life to patients in need of mechanical circulatory assistance. The new pumps on the horizon specifically address reliability, size, and cost, and are based on the centrifugal system. These devices use the Maglev (Magnetic Levitation) concept that allows for frictionless pumping, low thrombogenicity, minimal noise, and increased durability. Further research with this goal in mind and support from the federal government will be the key to the future use of circulatory assistance as destination therapy for heart failure patients. In addition, the cost-effectiveness of these devices will need to be maintained as the technology improves, as in any new technology that confronts a more intuitive option like the native heart. PMID:12790046

Kukuy, Eugene L; Oz, Mehmet C; Rose, Eric A; Naka, Yoshifumi

2003-02-01

195

Fluid flow monitoring device  

DOEpatents

A flow meter and temperature measuring device comprising a tube with a body centered therein for restricting flow and a sleeve at the upper end of the tube to carry several channels formed longitudinally in the sleeve to the appropriate axial location where they penetrate the tube to allow pressure measurements and temperature measurements with thermocouples. The high pressure measurement is made using a channel penetrating the tube away from the body and the low pressure measurement is made at a location at the widest part of the body. An end plug seals the end of the device and holes at its upper end allow fluid to pass from the interior of the tube into a plenum. The channels are made by cutting grooves in the sleeve, the grooves widened at the surface of the sleeve and then a strip of sleeve material is welded to the grooves closing the channels. Preferably the sleeve is packed with powdered graphite before cutting the grooves and welding the strips.

McKay, Mark D. (1426 Socastee Dr., North Augusta, SC 29841); Sweeney, Chad E. (3600 Westhampton Dr., Martinez, GA 30907-3036); Spangler, Jr., B. Samuel (2715 Margate Dr., Augusta, GA 30909)

1993-01-01

196

Microfluidic devices for bioapplications.  

PubMed

Harnessing the ability to precisely and reproducibly actuate fluids and manipulate bioparticles such as DNA, cells, and molecules at the microscale, microfluidics is a powerful tool that is currently revolutionizing chemical and biological analysis by replicating laboratory bench-top technology on a miniature chip-scale device, thus allowing assays to be carried out at a fraction of the time and cost while affording portability and field-use capability. Emerging from a decade of research and development in microfluidic technology are a wide range of promising laboratory and consumer biotechnological applications from microscale genetic and proteomic analysis kits, cell culture and manipulation platforms, biosensors, and pathogen detection systems to point-of-care diagnostic devices, high-throughput combinatorial drug screening platforms, schemes for targeted drug delivery and advanced therapeutics, and novel biomaterials synthesis for tissue engineering. The developments associated with these technological advances along with their respective applications to date are reviewed from a broad perspective and possible future directions that could arise from the current state of the art are discussed. PMID:21072867

Yeo, Leslie Y; Chang, Hsueh-Chia; Chan, Peggy P Y; Friend, James R

2011-01-01

197

Value contamination avoidance devices  

NASA Technical Reports Server (NTRS)

Mechanical redesign methods were used to minimize contamination damage of conventional fluid components and a contamination separator device was developed for long term reusable space vehicles. These were incorporated into an existing 50.8 mm poppet valve and tested for damage tolerance in a full size open loop flow system with gaseous and liquid nitrogen. Cyclic and steady flow conditions were tested with particles of 125 to 420 micrometers aluminum oxide dispersed in the test fluids. Nonflow life tests (100,000 cycles) were made with two valve configurations in gaseous hydrogen. The redesigned valve had an acceptable cycle life and improved tolerance to contamination damage when the primary sealing surfaces were coated with thin coatings of hard plastic (Teflon S and Kynar). Analytical studies and flow testing were completed of four different versions of the separator. overall separation efficiencies in the 55-90% range were measured with these non-optimum configurations.

Endicott, D. L.

1975-01-01

198

Linear encoding device  

NASA Technical Reports Server (NTRS)

A Linear Motion Encoding device for measuring the linear motion of a moving object is disclosed in which a light source is mounted on the moving object and a position sensitive detector such as an array photodetector is mounted on a nearby stationary object. The light source emits a light beam directed towards the array photodetector such that a light spot is created on the array. An analog-to-digital converter, connected to the array photodetector is used for reading the position of the spot on the array photodetector. A microprocessor and memory is connected to the analog-to-digital converter to hold and manipulate data provided by the analog-to-digital converter on the position of the spot and to compute the linear displacement of the moving object based upon the data from the analog-to-digital converter.

Leviton, Douglas B. (inventor)

1993-01-01

199

Multichannel optical sensing device  

DOEpatents

A multichannel optical sensing device is disclosed, for measuring the outr sky luminance or illuminance or the luminance or illuminance distribution in a room, comprising a plurality of light receptors, an optical shutter matrix including a plurality of liquid crystal optical shutter elements operable by electrical control signals between light transmitting and light stopping conditions, fiber optic elements connected between the receptors and the shutter elements, a microprocessor based programmable control unit for selectively supplying control signals to the optical shutter elements in a programmable sequence, a photodetector including an optical integrating spherical chamber having an input port for receiving the light from the shutter matrix and at least one detector element in the spherical chamber for producing output signals corresponding to the light, and output units for utilizing the output signals including a storage unit having a control connection to the microprocessor based programmable control unit for storing the output signals under the sequence control of the programmable control unit.

Selkowitz, Stephen E. (Piedmont, CA)

1990-01-01

200

Multichannel optical sensing device  

DOEpatents

A multichannel optical sensing device is disclosed, for measuring the outdoor sky luminance or illuminance or the luminance or illuminance distribution in a room, comprising a plurality of light receptors, an optical shutter matrix including a plurality of liquid crystal optical shutter elements operable by electrical control signals between light transmitting and light stopping conditions, fiber optical elements connected between the receptors and the shutter elements, a microprocessor based programmable control unit for selectively supplying control signals to the optical shutter elements in a programmable sequence, a photodetector including an optical integrating spherical chamber having an input port for receiving the light from the shutter matrix and at least one detector element in the spherical chamber for producing output signals corresponding to the light, and output units for utilizing the output signals including a storage unit having a control connection to the microprocessor based programmable control unit for storing the output signals under the sequence control of the programmable control unit.

Selkowitz, S.E.

1985-08-16

201

Fine particulate capture device  

NASA Technical Reports Server (NTRS)

To capture fine particulate matter in a gas such as air, a dielectric fluid is directed to the center of whichever face of a rotating disc is exposed to the air flow. The disc is comprised of two or more segments which bear opposite electrostatic potentials. As the dielectric fluid is centrifuged towards the periphery of the rotating disc, the fluid becomes charged to the same potential as the segment over which it is passing. Particulate matter is attracted to the charged segment and is captured by the fluid. The fluid then carries the captured particulate matter to a collection device such as a toroidal container disposed around the periphery of the disc. A grounded electrically-conductive ring may be disposed at the outer periphery of the disc to neutralize the captured particles and the fluid before they enter the container.

Peterson, V. S.; Siewert, R. D. (inventors)

1979-01-01

202

Air bag restraint device  

SciTech Connect

A rear-seat air bag restraint device is disclosed that prevents an individual, or individuals, from continuing violent actions while being transported in a patrol vehicle`s rear seat without requiring immediate physical contact by the law enforcement officer. The air bag is activated by a control switch in the front seat and inflates to independently restrict the amount of physical activity occurring in the rear seat of the vehicle while allowing the officer to safely stop the vehicle. The air bag can also provide the officer additional time to get backup personnel to aid him if the situation warrants it. The bag is inflated and maintains a constant pressure by an air pump. 8 figs.

Marts, D.J.; Richardson, J.G.

1995-10-17

203

Air bag restraint device  

DOEpatents

A rear-seat air bag restraint device is disclosed that prevents an individual, or individuals, from continuing violent actions while being transported in a patrol vehicle's rear seat without requiring immediate physical contact by the law enforcement officer. The air bag is activated by a control switch in the front seat and inflates to independently restrict the amount of physical activity occurring in the rear seat of the vehicle while allowing the officer to safely stop the vehicle. The air bag can also provide the officer additional time to get backup personnel to aid him if the situation warrants it. The bag is inflated and maintains a constant pressure by an air pump.

Marts, Donna J. (Idaho Falls, ID); Richardson, John G. (Idaho Falls, ID)

1995-01-01

204

Flywheel energy storage device  

SciTech Connect

An energy-storing flywheel device is described for a motor vehicle comprising: a rotary flywheel on a vertical shaft, the flywheel being releasably couplable to a drive means and being adapted to drive a driven mechanism; the shaft having a shaft axis; a bearing means for journally supporting the shaft, the flywheel including a rotatable magnetic ring structure supporting permanent magnets; and a spacing piece disposed between the rotatable magnetic ring structure and the shaft; and a magnetic supporting means for the rotatable magnetic ring structure. The magnetic supporting means comprises a stationary magnetic ring structure concentric about the shaft axis and below the rotary ring structure. The stationary magnetic ring structure supports permanent magnets.

Scheller, W.G.

1987-05-26

205

Capillary interconnect device  

DOEpatents

A manifold for connecting external capillaries to the inlet and/or outlet ports of a microfluidic device for high pressure applications is provided. The fluid connector for coupling at least one fluid conduit to a corresponding port of a substrate that includes: (i) a manifold comprising one or more channels extending therethrough wherein each channel is at least partially threaded, (ii) one or more threaded ferrules each defining a bore extending therethrough with each ferrule supporting a fluid conduit wherein each ferrule is threaded into a channel of the manifold, (iii) a substrate having one or more ports on its upper surface wherein the substrate is positioned below the manifold so that the one or more ports is aligned with the one or more channels of the manifold, and (iv) means for applying an axial compressive force to the substrate to couple the one or more ports of the substrate to a corresponding proximal end of a fluid conduit.

Renzi, Ronald F. (Tracy, CA)

2007-12-25

206

False color viewing device  

DOEpatents

A viewing device for observing objects in near-infrared false-color comprising a pair of goggles with one or more filters in the apertures, and pads that engage the face for blocking stray light from the sides so that all light reaching the user's eyes come through the filters. The filters attenuate most visible light and pass near-infrared (having wavelengths longer than approximately 700 nm) and a small amount of blue-green and blue-violet (having wavelengths in the 500 to 520 nm and shorter than 435 nm, respectively). The goggles are useful for looking at vegetation to identify different species and for determining the health of the vegetation, and to detect some forms of camouflage.

Kronberg, James W. (108 Independent Blvd., Aiken, SC 29801)

1992-01-01

207

Optical storage device  

NASA Technical Reports Server (NTRS)

A new holographic image storage device which uses four-wave mixing in two photorefractive crystals is described. Photorefractive crystals promise information storage densities on the order of 10(exp 9) to 10(exp 12) bits per cubic centimeter at real-time rates. Several studies in recent years have investigated the use of photorefractive crystals for storing holographic image information. However, all of the previous studies have focused on techniques for storing information in a single crystal. The disadvantage of using a single crystal is that the read process is destructive. Researchers have developed techniques for fixing the information in a crystal so that it may be read many times. However, when fixed, the information cannot be readily erased and overwritten with new information. It two photorefractive crystals are used, holographic image information may be stored dynamically. That is, the stored image information may be read out more than once, and it may be easily erased and overwritten with new image information.

Welch, Sharon S.

1991-01-01

208

Capacitance measuring device  

DOEpatents

A capacitance measuring circuit is provided in which an unknown capacitance is measured by comparing the charge stored in the unknown capacitor with that stored in a known capacitance. Equal and opposite voltages are repetitively simultaneously switched onto the capacitors through an electronic switch driven by a pulse generator to charge the capacitors during the ''on'' portion of the cycle. The stored charge is compared by summing discharge currents flowing through matched resistors at the input of a current sensor during the ''off'' portion of the switching cycle. The net current measured is thus proportional to the difference in value of the two capacitances. The circuit is capable of providing much needed accuracy and stability to a great variety of capacitance-based measurement devices at a relatively low cost.

Andrews, W.H. Jr.

1984-08-01

209

Sun tracking device  

SciTech Connect

The device comprises a declination adjustable solar ray directed assembly straddling the rim of a circular segment, hinged on the polar axis of an equatorial mount. The circular segment has a holding means for positioning it on the rim of a time dial placed on the equatorial mount. Shoes are attached to the solar directed assembly and ride on the rim of the circular segment, or shoes are attached to a support stand for the equatorial mount and ride on the rim of the equatorial mount. The support stand has a leveling base with two pairs of adjustable legs and pivoted feet providing stiffness in mutually perpendicular planes while allowing for tilting adjustment in alternate planes during the leveling operation.

Galvin, R.B.

1983-11-08

210

False color viewing device  

DOEpatents

A viewing device for observing objects in near-infrared false-color comprising a pair of goggles with one or more filters in the apertures, and pads that engage the face for blocking stray light from the sides so that all light reaching the user's eyes come through the filters. The filters attenuate most visible light and pass near-infrared (having wavelengths longer than approximately 700 nm) and a small amount of blue-green and blue-violet (having wavelengths in the 500 to 520 nm and shorter than 435 nm, respectively). The goggles are useful for looking at vegetation to identify different species and for determining the health of the vegetation, and to detect some forms of camouflage. 7 figs.

Kronberg, J.W.

1992-10-20

211

Corrosion of orthodontic devices.  

PubMed

A brief overview of the theory of corrosion and the formation of galvanic couples is presented, followed by a discussion of the metals and alloys used in the fabrication of orthodontic appliances and devices. Attention is paid to the factors that contribute to establishment of corrosion cells in the mouth. Although oral corrosion generally does not cause significant destruction of metal, it can elicit in patients adverse physiological responses such as local irritation and metal hypersensitivity. There are indications that orthodontic treatment may lower the incidence of nickel hypersensitivity. Destructive attack on orthodontic appliances does occur, however, when certain types of denture cleanser are used to clean appliances that contain soldered joints. PMID:9573881

von Fraunhofer, J A

1997-09-01

212

Intrauterine Contraceptive Devices  

PubMed Central

Although the ideal contraceptive has not been found, intrauterine contraceptive devices offer distinct advantages and provide adequate contraception. Unfortunately, they have side-effects, complications and failures. Their use is contraindicated in pregnancy, abnormalities of the uterine cavity, uterine hypoplasia, infection and abnormal uterine bleeding. Patients who have had an ectopic pregnancy, who are prone to endocarditis, who have allergies to copper, or who are taking anticoagulants also should not use IUCDs, Insertion is best performed during menstruation, and the patient should be seen in follow up to assess placement and any side-effects, including cramps, bleeding, vaginal discharge, or discomfort during intercourse. Pregnancy may occur when the IUCD is in place, and prompt diagnosis is mandatory. Depending on the type of IUCD used, replacement time varies from one to three years. PMID:21283376

Cardoso, Reynaldo

1983-01-01

213

Monitored separation device  

NASA Technical Reports Server (NTRS)

A device for separating and purifying useful quantities of particles comprises: a. an anolyte reservoir connected to an anode, the anolyte reservoir containing an electrophoresis buffer; b. a catholyte reservoir connected to a cathode, the catholyte reservoir also containing the electrophoresis buffer; c. a power supply connected to the anode and to the cathode; d. a column having a first end inserted into the anolyte reservoir, a second end inserted into the catholyte reservoir, and containing a separation medium; e. a light source; f. a first optical fiber having a first fiber end inserted into the separation medium, and having a second fiber end connected to the light source; g. a photo detector; h. a second optical fiber having a third fiber end inserted into the separation medium, and having a fourth fiber end connected to the photo detector; and i. an ion-exchange membrane in the anolyte reservoir.

Jackson, George William (Inventor); Willson, Richard Coale (Inventor); Fox, George Edward (Inventor)

2011-01-01

214

Tunable surface plasmon devices  

DOEpatents

A tunable extraordinary optical transmission (EOT) device wherein the tunability derives from controlled variation of the dielectric constant of a semiconducting material (semiconductor) in evanescent-field contact with a metallic array of sub-wavelength apertures. The surface plasmon resonance wavelength can be changed by changing the dielectric constant of the dielectric material. In embodiments of this invention, the dielectric material is a semiconducting material. The dielectric constant of the semiconducting material in the metal/semiconductor interfacial region is controllably adjusted by adjusting one or more of the semiconductor plasma frequency, the concentration and effective mass of free carriers, and the background high-frequency dielectric constant in the interfacial region. Thermal heating and/or voltage-gated carrier-concentration changes may be used to variably adjust the value of the semiconductor dielectric constant.

Shaner, Eric A. (Rio Rancho, NM); Wasserman, Daniel (Lowell, MA)

2011-08-30

215

False color viewing device  

DOEpatents

This invention consists of a viewing device for observing objects in near-infrared false-color comprising a pair of goggles with one or more filters in the apertures, and pads that engage the face for blocking stray light from the sides so that all light reaching, the user`s eyes come through the filters. The filters attenuate most visible light and pass near-infrared (having wavelengths longer than approximately 700 nm) and a small amount of blue-green and blue-violet (having wavelengths in the 500 to 520 nm and shorter than 435 nm, respectively). The goggles are useful for looking at vegetation to identify different species and for determining the health of the vegetation, and to detect some forms of camouflage.

Kronberg, J.W.

1991-05-08

216

Silicon Nanowire Devices  

NASA Astrophysics Data System (ADS)

Metal-catalyzed, self-assembled, one-dimensional semiconductor nanowires are being considered as possible device elements to augment and supplant conventional electronics and to extend the use of CMOS beyond the physical and economic limits of conventional technology. Such nanowires can create nanostructures without the complexity and cost of extremely fine scale lithography. The well-known and controllable properties of silicon make silicon nanowires especially attractive. Easy integration with conventional electronics will aid their acceptance and incorporation. For example, connections can be formed to both ends of a nanowire by growing it laterally from a vertical surface formed by etching the top silicon layer of a silicon-on-insulator structure into isolated electrodes. Field-effect structures are one class of devices that can be readily built in silicon nanowires. Because the ratio of surface to volume in a thin nanowire is high, conduction through the nanowire is very sensitive to surface conditions, making it effective as the channel of a field-effect transistor or as the transducing element of a gas or chemical sensor. As the nanowire diameter decreases, a greater fraction of the mobile charge can be modulated by a given external charge, increasing the sensitivity. Having the gate of a nanowire transistor completely surround the nanowire also enhances the sensitivity. For a field-effect sensor to be effective, the charge must be physically close to the nanowire so that the majority of the compensating charge is induced in the nanowire and so that ions in solution do not screen the charge. Because only induced charge is being sensed, a coating that selectively binds the target species should be added to the nanowire surface to distinguish between different species in the analyte. The nanowire work at Hewlett-Packard Laboratories was supported in part by the Defense Advanced Research Projects Agency.

Kamins, Theodore

2006-03-01

217

Arterial closure devices. A review.  

PubMed

The use of arterial closure devices in achieving haemostasis following arterial puncture has become increasingly popular. This review aims to provide an overview of the currently available closure devices, with an up-to-date summary of the supporting literature. The various devices have their advantages and disadvantages as well as differing mechanisms of actions. Technical aspects of deployment affect the learning curve and ease of use of individual devices. Some complications that arise are device specific where others are related to arterial punctures in general. When choosing a device, all these factors should be taken into account as well as differing clinical requirements and priorities. Most studies of arterial closure devices that are currently in use conclude that the safety profile of closure devices is comparable to manual compression. The literature does not show superiority of any particular device. Caution is advised in extrapolating evidence based on differing patient groups, as many of the study populations are heterogeneous. As physicians become more familiar with the use of closure devices, off-label applications of some devices have emerged, some of which need further evaluation. The ideal closure device should reduce complication rates compared to manual compression, be easy to use with a short learning curve, and have a high rate of deployment success. It should also be usable across a wide range of sheath sizes, not leave any permanent foreign body behind, reduce time to haemostasis and ambulation, allow immediate repuncture, improve patient comfort and be cost effective. In spite of the wide range of devices currently available there remains room for improvement. PMID:17989631

Madigan, J B; Ratnam, L A; Belli, A M

2007-10-01

218

Opportunistic, collaborative and synchronized, proximal device ecology  

E-print Network

CoSync is an on-device software framework for coordinating proximal consumer electronic devices in order to create a synchronized, opportunistic and collaborative device ecology. The CoSync device ecology combines multiple ...

Toledano, Eyal

2013-01-01

219

Vertical Interconnect for Organic Electronic Devices.  

National Technical Information Service (NTIS)

A device includes a plurality of organic electronic devices disposed on a substrate, wherein each of the organic electronic devices comprises a first electrode and a second electrode. Furthermore, the device includes an organic layer disposed between the ...

A. R. Duggal, C. M. A. Heller, D. F. Foust, J. Liu, T. J. Faircloth

2004-01-01

220

Stabilizing Semiconductor Devices With Hydrogen  

NASA Technical Reports Server (NTRS)

Damage by radiation healed rapidly. Feature provides continuous, rapid recovery of devices from degradation caused by hot electrons, photons, and ionizing radiation. Several candidate sites for palladium film catalysts, inserted during manufacture as integral parts of devices. Paladium films made by evaporation, sputtering, or chemical-vapor deposition. If additional storage required, thick layer of palladium plated on inside of package surrounding device. Hydrogen stored by exposing palladium to hydrogen gas just before package sealed hermetically.

Overhauser, Albert W.; Maserjian, Joseph

1989-01-01

221

CDC field mapping device - ''ROTOTRACK''  

SciTech Connect

A field mapping device for the magnet of the Collider Detector at Fermilab (CDF) was constructed. The device was used for extensive study of the CDF magnetic field distribution. The mechanical and electrical features of the device, as well as the data acquisition system and software, are described. The mechanical system was designed so that the errors on the position and angle of the probe were +-0.75 mm and +-1 mrad, respectively.

Yamada, R.; Hawtree, J.; Kaczar, K.; Leverence, R.; McGuire, K.; Newman-Holmes, C.; Schmidt, E.E.; Shallenberger, J.

1985-10-01

222

Solid State Devices: Course Materials  

NSDL National Science Digital Library

This course provided by eSyst describes solid state devices. An introduction explains the traditional view and systems view of this topic. The course includes numerous instructor presentations and student guides. Topics for these include power amplifier class comparison, device pathology, and the role of devices. A detailed course outline, student learning outcomes, and links to additional online resources are also provided. Users must create a free, quick login in order to download the materials.

2012-06-27

223

21 CFR 830.300 - Devices subject to device identification data submission requirements.  

...HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES UNIQUE DEVICE IDENTIFICATION Global Unique Device Identification Database § 830.300 Devices subject to device identification data submission requirements. (a) In general. The...

2014-04-01

224

Microbiopsy/precision cutting devices  

DOEpatents

Devices for performing tissue biopsy on a small scale (microbiopsy). By reducing the size of the biopsy tool and removing only a small amount of tissue or other material in a minimally invasive manner, the risks, costs, injury and patient discomfort associated with traditional biopsy procedures can be reduced. By using micromachining and precision machining capabilities, it is possible to fabricate small biopsy/cutting devices from silicon. These devices can be used in one of four ways 1) intravascularly, 2) extravascularly, 3) by vessel puncture, and 4) externally. Additionally, the devices may be used in precision surgical cutting.

Krulevitch, Peter A. (Pleasanton, CA); Lee, Abraham P. (Walnut Creek, CA); Northrup, M. Allen (Berkeley, CA); Benett, William J. (Livermore, CA)

1999-01-01

225

Microbiopsy/precision cutting devices  

DOEpatents

Devices are disclosed for performing tissue biopsy on a small scale (microbiopsy). By reducing the size of the biopsy tool and removing only a small amount of tissue or other material in a minimally invasive manner, the risks, costs, injury and patient discomfort associated with traditional biopsy procedures can be reduced. By using micromachining and precision machining capabilities, it is possible to fabricate small biopsy/cutting devices from silicon. These devices can be used in one of four ways (1) intravascularly, (2) extravascularly, (3) by vessel puncture, and (4) externally. Additionally, the devices may be used in precision surgical cutting. 6 figs.

Krulevitch, P.A.; Lee, A.P.; Northrup, M.A.; Benett, W.J.

1999-07-27

226

Implantable medical devices MRI safe.  

PubMed

Pacemakers, ICDs, neurostimulators like deep brain stimulator electrodes, spiral cord stimulators, insulin pumps, cochlear implants, retinal implants, hearing aids, electro cardio gram (ECG) leads, or devices in interventional MRI such as vascular guide wires or catheters are affected by MRI magnetic and electromagnetic fields. Design of MRI Safe medical devices requires computer modeling, bench testing, phantom testing, and animal studies. Implanted medical devices can be MRI unsafe, MRI conditional or MRI safe (see glossary). In the following paragraphs we will investigate how to design implanted medical devices MRI safe. PMID:23739365

Dal Molin, Renzo; Hecker, Bertrand

2013-01-01

227

Lightning protection devices for high frequencies equipments  

SciTech Connect

Contents: Mechanism of a Lightning Stroke from Antenna to Ground; Principles of Protection Devices for Feeders; Electrical Characteristics of H.F. Protection Devices; Calculation of H.F. Protection Devices; Catalogue Devices for High Frequency Protection; Some Measurement Results for Tees; Measurement Results for Decoupling Line Devices; Installation of High Frequency Devices.

Pierre, J.

1983-01-01

228

Chapter 11. Soft Semiconductor Devices Soft Semiconductor Devices  

E-print Network

Chapter 11. Soft Semiconductor Devices 11-1 Soft Semiconductor Devices Academic and Research Staff Staff Catherine Bourgeois Our group works with soft semiconductors. These are materials comprised of molecules held together by weak van der Waals bonds. In comparison, the atoms in conventional semiconductors

229

Cable load sensing device  

DOEpatents

Apparatus for sensing the magnitude of a load on a cable as the cable is employed to support the load includes a beam structure clamped to the cable so that a length of the cable lies along the beam structure. A spacer associated with the beam structure forces a slight curvature in a portion of the length of cable under a cable "no-load" condition so that the portion of the length of cable is spaced from the beam structure to define a cable curved portion. A strain gauge circuit including strain gauges is secured to the beam structure by welding. As the cable is employed to support a load the load causes the cable curved portion to exert a force normal to the cable through the spacer and on the beam structure to deform the beam structure as the cable curved portion attempts to straighten under the load. As this deformation takes place, the resistance of the strain gauges is set to a value proportional to the magnitude of the normal strain on the beam structure during such deformation. The magnitude of the normal strain is manipulated in a control device to generate a value equal to the magnitude or weight of the load supported by the cable.

Beus, Michael J. (Spokane, WA); McCoy, William G. (Spokane, WA)

1998-01-01

230

[Implantable ventricular assist device].  

PubMed

Implantable ventricular assist device( VAD) is the only evidence-based option to treat stage D heart failure patients with significant symptoms at rest in spite of maximum medical therapy, other than heart transplant. Implantable VADs available in Japan include Evaheart, DuraHeart both from Japan, Jarvik 2000 and HeartMate II both from United States. In Japanese settings, implantable VAD is indicated and insured only for patients who are supposed to have an indication for receiving heart transplant, which means "bridge to transplantation" use. And in Japan, implantable VAD can be implanted for patients less than 65 years old if it needs to be insured. In the University of Tokyo Hospital, the mid-term outcomes of 41 implantable VAD patients were acceptable with 2 hospital deaths, 2 remote deaths and oneyear survival rate at 88%.Considering the present Japanese situation with extreme shortage of organ donation, the extended application of implantable VADs as "Destination Therapy" is awaited, but quality of life of care-givers as well as patients themselves and sustainable follow-up system provided by healthcare professionals need to be warranted. PMID:25138935

Nawata, Kan; Kinoshita, Osamu; Kimura, Mitsutoshi; Ono, Minoru

2014-07-01

231

Cable load sensing device  

SciTech Connect

Apparatus for sensing the magnitude of a load on a cable as the cable is employed to support the load includes a beam structure clamped to the cable so that a length of the cable lies along the beam structure. A spacer associated with the beam structure forces a slight curvature in a portion of the length of cable under a cable no-load condition so that the portion of the length of cable is spaced from the beam structure to define a cable curved portion. A strain gauge circuit including strain gauges is secured to the beam structure by welding. As the cable is employed to support a load the load causes the cable curved portion to exert a force normal to the cable through the spacer and on the beam structure to deform the beam structure as the cable curved portion attempts to straighten under the load. As this deformation takes place, the resistance of the strain gauges is set to a value proportional to the magnitude of the normal strain on the beam structure during such deformation. The magnitude of the normal strain is manipulated in a control device to generate a value equal to the magnitude or weight of the load supported by the cable.

Beus, M.J.; McCoy, W.G.

1996-12-31

232

Highly Efficient Multilayer Thermoelectric Devices  

NASA Technical Reports Server (NTRS)

Multilayer thermoelectric devices now at the prototype stage of development exhibit a combination of desirable characteristics, including high figures of merit and high performance/cost ratios. These devices are capable of producing temperature differences of the order of 50 K in operation at or near room temperature. A solvent-free batch process for mass production of these state-of-the-art thermoelectric devices has also been developed. Like prior thermoelectric devices, the present ones have commercial potential mainly by virtue of their utility as means of controlled cooling (and/or, in some cases, heating) of sensors, integrated circuits, and temperature-critical components of scientific instruments. The advantages of thermoelectric devices for such uses include no need for circulating working fluids through or within the devices, generation of little if any noise, and high reliability. The disadvantages of prior thermoelectric devices include high power consumption and relatively low coefficients of performance. The present development program was undertaken in the hope of reducing the magnitudes of the aforementioned disadvantages and, especially, obtaining higher figures of merit for operation at and near room temperature. Accomplishments of the program thus far include development of an algorithm to estimate the heat extracted by, and the maximum temperature drop produced by, a thermoelectric device; solution of the problem of exchange of heat between a thermoelectric cooler and a water-cooled copper block; retrofitting of a vacuum chamber for depositing materials by sputtering; design of masks; and fabrication of multilayer thermoelectric devices of two different designs, denoted I and II. For both the I and II designs, the thicknesses of layers are of the order of nanometers. In devices of design I, nonconsecutive semiconductor layers are electrically connected in series. Devices of design II contain superlattices comprising alternating electron-acceptor (p)-doped and electron-donor (n)-doped, nanometer- thick semiconductor layers.

Boufelfel, Ali

2006-01-01

233

Ventricular assist devices in pediatrics  

PubMed Central

The implantation of a mechanical circulatory device for end-stage ventricular failure is a possible therapeutic approach in adult and pediatric cardiac surgery and cardiology. The aim of this article is to present mechanical circulatory assist devices used in infants and children with special emphasis on extracorporeal membrane oxygenation, Berlin Heart assist device, centrifugal pump and Medos assist device. The success of long-term support with implantable ventricular assist devices in adults and children has led to their increasing use as a bridge to transplantation in patients with otherwise non-treatable left ventricular failure, by transforming a terminal phase heart condition into a treatable cardiopathy. Such therapy allows rehabilitation of patients before elective cardiac transplantation (by removing contraindications to transplantation mainly represented by organ impairment) or acting as a bridge to recovery of the native left ventricular function (depending on underlying cardiac disease). Treatment may also involve permanent device implantation when cardiac transplantation is contraindicated. Indications for the implantation of assisted circulation include all states of cardiac failure that are reversible within a variable period of time or that require heart transplantation. This article will address the current status of ventricular assist devices by examining historical aspects of its development, current technical issues and clinical features of pediatric ventricular assist devices, including indications and contraindications for support. PMID:22368605

Fuchs, A; Netz, H

2001-01-01

234

Assessment of Lift Augmentation Devices.  

National Technical Information Service (NTIS)

Contents: Aerodynamics of mechanical high-lift devices; Aerodynamics of pneumatic high-lift devices; Aerodynamics of variable sweep; Fundamental aspects of flow separation under high-lift conditions; Some notes on two-dimensional high-lift tests in wind-t...

1971-01-01

235

Mathematical Modeling of Semiconductor Devices  

E-print Network

-emitting diodes (LED) used in displays and indication lambs and semiconductor lasers used in compact disk systems and development of semiconductor devices. Since the first semiconductor device (a germanium transistor) has been, laser printers, and eye surgery. · Flat-panel displays create an image by controlling light that eith

Jüngel, Ansgar

236

Adaptive Devices and the Computer.  

ERIC Educational Resources Information Center

Guidelines for selecting appropriate assistive devices which afford disabled individuals access to computers are presented. In general, the individual who is to use the computer must be evaluated first to ensure that the adaptive device makes the most efficient use of his/her muscle control, mobility, reflexes, etc. (CB)

Taber, Florence M.

1986-01-01

237

Evaluating Devices for Treating Epilepsy  

Microsoft Academic Search

Summary: Purpose: Research into new implantable devices for treating epilepsy is expanding rapidly. Pilot studies sug- gest sufficient safety and potential efficacy to justify proceed- ing with larger scale clinical trials. Understanding the chal- lenges presented by these trials, the testing and approval pro- cess for implantable devices, and how these differ from require- ments for antiepileptic drugs (AEDs) is

Brian Litt

2003-01-01

238

Jaw bite force measurement device.  

PubMed

We describe a cost-effective device that uses an off-the-shelf force transducer to measure patient bite force as a diagnostic aid in determining dental implant size, number of implants, and prosthetic design for restoring partial edentulism. The main advantages of the device are its accuracy, simplicity, modularity, ease of manufacturing, and low cost. PMID:20822470

Flanagan, Dennis; Ilies, Horea; O'Brien, Brendan; McManus, Anne; Larrow, Beau

2012-08-01

239

Overview of Device Regulatory Pathway  

E-print Network

Assisted Breathing Apparatus for Fire Protection This device will be used by firefighters and victims measurements � Market device to firefighters for use during the overhaul process, which involves significant exposure to toxic fumes as firefighters search for smoldering and hidden fire sources following

McGaughey, Alan

240

Triboluminescent tamper-indicating device  

DOEpatents

A tamper-indicating device is described. The device has a transparent or translucent cylindrical body that includes triboluminescent material, and an outer opaque layer that prevents ambient light from entering. A chamber in the body holds an undeveloped piece of photographic film bearing an image. The device is assembled from two body members. One of the body members includes a recess for storing film and an optical assembly that can be adjusted to prevent light from passing through the assembly and exposing the film. To use the device with a hasp, the body members are positioned on opposite sides of a hasp, inserted through the hasp, and attached. The optical assembly is then manipulated to allow any light generated from the triboluminescent materials during a tampering activity that damages the device to reach the film and destroy the image on the film.

Johnston, Roger G. (Los Alamos, NM); Garcia, Anthony R. E. (Espanola, NM)

2002-01-01

241

Compressed optimization of device architectures  

E-print Network

Recent advances in nanotechnology have enabled researchers to control individual quantum mechanical objects with unprecedented accuracy, opening the door for both quantum and extreme-scale conventional computing applications. As these devices become larger and more complex, the ability to design them for simple control becomes a daunting and computationally infeasible task. Here, motivated by ideas from compressed sensing, we introduce a protocol for Compressed Optimization of Device Architectures (CODA). It leads naturally to a metric for benchmarking device performance and optimizing device designs, and provides a scheme for automating the control of gate operations and reducing their complexity. Because CODA is both experimentally and computationally efficient, it is readily extensible to large systems. We demonstrate the CODA benchmarking and optimization protocols through simulations of up to eight quantum dots in devices that are currently being developed experimentally for quantum computation.

Adam Frees; John King Gamble; Daniel R. Ward; Robin Blume-Kohout; M. A. Eriksson; Mark Friesen; S. N. Coppersmith

2014-09-12

242

Impacting device for testing insulation  

NASA Technical Reports Server (NTRS)

An electro-mechanical impacting device for testing the bonding of foam insulation to metal is descirbed. The device lightly impacts foam insulation attached to metal to determine whether the insulation is properly bonded to the metal and to determine the quality of the bond. A force measuring device, preferably a load cell mounted on the impacting device, measures the force of the impact and the duration of the time the hammer head is actually in contact with the insulation. The impactor is designed in the form of a handgun having a driving spring which can propel a plunger forward to cause a hammer head to impact the insulation. The device utilizes a trigger mechanism which provides precise adjustements, allowing fireproof operation.

Redmon, J. W. (inventor)

1984-01-01

243

Automatic Mechetronic Wheel Light Device  

DOEpatents

A wheel lighting device for illuminating a wheel of a vehicle to increase safety and enhance aesthetics. The device produces the appearance of a "ring of light" on a vehicle's wheels as the vehicle moves. The "ring of light" can automatically change in color and/or brightness according to a vehicle's speed, acceleration, jerk, selection of transmission gears, and/or engine speed. The device provides auxiliary indicator lights by producing light in conjunction with a vehicle's turn signals, hazard lights, alarm systems, and etc. The device comprises a combination of mechanical and electronic components and can be placed on the outer or inner surface of a wheel or made integral to a wheel or wheel cover. The device can be configured for all vehicle types, and is electrically powered by a vehicle's electrical system and/or battery.

Khan, Mohammed John Fitzgerald (Silver Spring, MD)

2004-09-14

244

Handheld ultrasound array imaging device  

NASA Astrophysics Data System (ADS)

A handheld ultrasound imaging device, one that weighs less than five pounds, has been developed for diagnosing trauma in the combat battlefield as well as a variety of commercial mobile diagnostic applications. This handheld device consists of four component ASICs, each is designed using the state of the art microelectronics technologies. These ASICs are integrated with a convex array transducer to allow high quality imaging of soft tissues and blood flow in real time. The device is designed to be battery driven or ac powered with built-in image storage and cineloop playback capability. Design methodologies of a handheld device are fundamentally different to those of a cart-based system. As system architecture, signal and image processing algorithm as well as image control circuit and software in this device is deigned suitably for large-scale integration, the image performance of this device is designed to be adequate to the intent applications. To elongate the battery life, low power design rules and power management circuits are incorporated in the design of each component ASIC. The performance of the prototype device is currently being evaluated for various applications such as a primary image screening tool, fetal imaging in Obstetrics, foreign object detection and wound assessment for emergency care, etc.

Hwang, Juin-Jet; Quistgaard, Jens

1999-06-01

245

Control method for prosthetic devices  

NASA Technical Reports Server (NTRS)

A control system and method for prosthetic devices is provided. The control system comprises a transducer for receiving movement from a body part for generating a sensing signal associated with that movement. The sensing signal is processed by a linearizer for linearizing the sensing signal to be a linear function of the magnitude of the distance moved by the body part. The linearized sensing signal is normalized to be a function of the entire range of body part movement from the no-shrug position of the moveable body part. The normalized signal is divided into a plurality of discrete command signals. The discrete command signals are used by typical converter devices which are in operational association with the prosthetic device. The converter device uses the discrete command signals for driving the moveable portions of the prosthetic device and its sub-prosthesis. The method for controlling a prosthetic device associated with the present invention comprises the steps of receiving the movement from the body part, generating a sensing signal in association with the movement of the body part, linearizing the sensing signal to be a linear function of the magnitude of the distance moved by the body part, normalizing the linear signal to be a function of the entire range of the body part movement, dividing the normalized signal into a plurality of discrete command signals, and implementing the plurality of discrete command signals for driving the respective moveable prosthesis device and its sub-prosthesis.

Bozeman, Richard J., Jr. (inventor.)

1995-01-01

246

Electrically Variable Resistive Memory Devices  

NASA Technical Reports Server (NTRS)

Nonvolatile electronic memory devices that store data in the form of electrical- resistance values, and memory circuits based on such devices, have been invented. These devices and circuits exploit an electrically-variable-resistance phenomenon that occurs in thin films of certain oxides that exhibit the colossal magnetoresistive (CMR) effect. It is worth emphasizing that, as stated in the immediately preceding article, these devices function at room temperature and do not depend on externally applied magnetic fields. A device of this type is basically a thin film resistor: it consists of a thin film of a CMR material located between, and in contact with, two electrical conductors. The application of a short-duration, low-voltage current pulse via the terminals changes the electrical resistance of the film. The amount of the change in resistance depends on the size of the pulse. The direction of change (increase or decrease of resistance) depends on the polarity of the pulse. Hence, a datum can be written (or a prior datum overwritten) in the memory device by applying a pulse of size and polarity tailored to set the resistance at a value that represents a specific numerical value. To read the datum, one applies a smaller pulse - one that is large enough to enable accurate measurement of resistance, but small enough so as not to change the resistance. In writing, the resistance can be set to any value within the dynamic range of the CMR film. Typically, the value would be one of several discrete resistance values that represent logic levels or digits. Because the number of levels can exceed 2, a memory device of this type is not limited to binary data. Like other memory devices, devices of this type can be incorporated into a memory integrated circuit by laying them out on a substrate in rows and columns, along with row and column conductors for electrically addressing them individually or collectively.

Liu, Shangqing; Wu, Nai-Juan; Ignatiev, Alex; Charlson, E. J.

2010-01-01

247

Split ring containment attachment device  

DOEpatents

A containment attachment device 10 for operatively connecting a glovebag 200 to plastic sheeting 100 covering hazardous material. The device 10 includes an inner split ring member 20 connected on one end 22 to a middle ring member 30 wherein the free end 21 of the split ring member 20 is inserted through a slit 101 in the plastic sheeting 100 to captively engage a generally circular portion of the plastic sheeting 100. A collar potion 41 having an outer ring portion 42 is provided with fastening means 51 for securing the device 10 together wherein the glovebag 200 is operatively connected to the collar portion 41.

Sammel, Alfred G. (Pittsburgh, PA)

1996-01-01

248

Recent medical devices for tonsillectomy  

PubMed Central

The most frequent and probably the earliest described surgical intervention of ENT field is tonsillectomy. Various methods were described and devices were invented up to now in order to increase safety and decrease time consumption and complications. All new created devices promises lower intraoperative blood loss, intraoperative time, postoperative pain and bleeding. But with their widely use it is seen that they cannot fulfill what they promise. Debate also continues as to which technique yields the best outcome. This study reports a summary for common medical devices which were previously used in tonsillectomy. PMID:23930051

Sayin, I; Cingi, C

2012-01-01

249

Devices for collecting chemical compounds  

DOEpatents

A device for sampling chemical compounds from fixed surfaces and related methods are disclosed. The device may include a vacuum source, a chamber and a sorbent material. The device may utilize vacuum extraction to volatilize the chemical compounds from a fixed surface so that they may be sorbed by the sorbent material. The sorbent material may then be analyzed using conventional thermal desorption/gas chromatography/mass spectrometry (TD/GC/MS) instrumentation to determine presence of the chemical compounds. The methods may include detecting release and presence of one or more chemical compounds and determining the efficacy of decontamination. The device may be useful in collection and analysis of a variety of chemical compounds, such as residual chemical warfare agents, chemical attribution signatures and toxic industrial chemicals.

Scott, Jill R; Groenewold, Gary S

2013-12-24

250

Adv Med Tech/ Biomedical Devices  

E-print Network

Adv Med Tech/ Biomedical Devices Automotive/ Motorsports Aviation/ Aerospace Biotech Games Service Systems Sustainable Energy/ Green Technologies Value-Added Ag/ Local Foods Advantage decision to relocate to North Carolina very easy. Joe Berasi President Vescom America Henderson, NC From

Cavanagh, John

251

Fluidic-thermochromic display device  

NASA Technical Reports Server (NTRS)

Fluidic decoder and display device has low-power requirements for temperature control of thermochromic materials. An electro-to-fluid converter translates incoming electrical signals into pneumatics signal of sufficient power to operate the fluidic logic elements.

Grafstein, D.; Hilborn, E. H.

1968-01-01

252

Infrared microthermography of microfabricated devices.  

PubMed

We report a new experimental apparatus for infrared microthermography applicable to a wide class of samples including semitransparent ones and perforated devices. This setup is particularly well suited for the thermography of microfabricated devices. Traditionally, temperature calibration is performed using calibration hot plates, but this is not applicable to transmissive samples. In this work a custom designed miniature calibration oven in conjunction with spatial filtering is used to obtain accurate static and transient temperature maps of actively heated devices. The procedure does not require prior knowledge of the emissivity. Calibration and image processing algorithms are discussed and analyzed. We show that relatively inexpensive uncooled bolometer arrays can be a suitable detector choice in certain radiometric applications. As an example, we apply this method in the analysis of temperature profiles of an actively heated microfabricated preconcentrator device that incorporates a perforated membrane and is used in trace detection of illicit substances. PMID:17614631

Furstenberg, Robert; Kendziora, C A; Stepnowski, Stanley V; McGill, R Andrew

2007-06-01

253

Optical and optoelectronic fiber devices  

E-print Network

The ability to integrate materials with disparate electrical, thermal, and optical properties into a single fiber structure enabled the realization of fiber devices with diverse and complex functionalities. Amongst those, ...

Shapira, Ofer, Ph. D. Massachusetts Institute of Technology

2007-01-01

254

Prefilled devices for parenteral applications.  

PubMed

Current parenteral administration of drugs suffers from several drawbacks including the requirement of healthcare personnel to administer the drug, the risk of needle stick injuries that may result in the transmission of blood borne pathogens, and patient discomfort. Prefilled devices have emerged as powerful tools to improve parenteral administration of drugs. There are a number of clinical conditions including treatment of endocrine diseases, neurological disorders, autoimmune diseases and emergency medicine where prefilled devices have made major improvements to patient care. Prefilled devices have become an important set of tools for the medical practitioner due to their ease of use and safety, cost effectiveness and patient convenience. This review provides a comprehensive summary of existing prefilled devices, their current clinical uses and corresponding regulatory processes. PMID:24479422

Gurman, Pablo; Chi, Albert; Hood, Tiffany; Reina, Micaela; Rosen, Yitzhak; D'hers, Sebastian; Elman, Noel

2014-03-01

255

Thermoelectric Devices Advance Thermal Management  

NASA Technical Reports Server (NTRS)

Thermoelectric (TE) devices heat, cool, and generate electricity when a temperature differential is provided between the two module faces. In cooperation with NASA, Chico, California-based United States Thermoelectric Consortium Inc. (USTC) built a gas emissions analyzer (GEA) for combustion research. The GEA precipitated hydrocarbon particles, preventing contamination that would hinder precise rocket fuel analysis. The USTC research and design team uses patent-pending dimple, pin-fin, microchannel and microjet structures to develop and design heat dissipation devices on the mini-scale level, which not only guarantee high performance of products, but also scale device size from 1 centimeter to 10 centimeters. USTC continues to integrate the benefits of TE devices in its current line of thermal management solutions and has found the accessibility of NASA technical research to be a valuable, sustainable resource that has continued to positively influence its product design and manufacturing

2007-01-01

256

Cryogenic Magnetostrictive Materials and Devices  

NASA Astrophysics Data System (ADS)

Energen has patented KelvinAll™, the first material, to exhibit magnetostrictive properties from elevated temperatures to near absolute zero, opening up a new range of applications for magnetostrictive devices. Magnetostrictive materials change their shape in the presence of a magnetic field. This elongation is precise, predictable, reversible and repeatable thereby enabling practical electromechanical devices. KelvinAll has magnetostriction comparable to Terfenol-D at room temperature and its magnetostriction increases at cryogenic temperatures. Energen has developed and prototyped practical electromechanical devices using KelvinAll. These devices include tuners for superconducting radio frequency (SRF) cavities, components for magnetic refrigerators, flow control valves and precision translation stages some of which will be discussed in greater detail. Energen's KelvinAll products enhance performance, increase reliability and reduce development costs.

Joshi, C. H.; Mavanur, A.; Tai, C.-Y.; Han, Z.-X.; Rodenbush, A. J.; Wong, Y.

2004-06-01

257

Device Would Provide Controllable Buoyancy  

NASA Technical Reports Server (NTRS)

Proposed buoyant device attaches to object denser than water and adjusts to obtain neutral overall buoyancy. Conceived to aid training astronauts in handling "weightless" equipment in water tanks. Could be used to support marine environmental monitoring instrument at fixed predetermined depth. In marine salvage operation it holds parts at convenient depth before used or hoisted to surface. Device made in variety of sizes and shapes to suit objects to be supported. Could be equipped with such suitable attachment hardware as U-bolts, clamps, or cable ties. One or more such devices used to support object as necessary. Replaces plastic foam floats, which must be cut to size according to estimates of volume of foam that gives required amount of buoyancy. Device does not become waterlogged or release contaminating particles.

Macmartin, Malcolm J.

1995-01-01

258

Photonic crystal devices with quasiperiodicity  

Microsoft Academic Search

Photonic crystals with no perfect translational symmetries show unique light localization and propagation, which cannot be seen in normal photonic crystals. This paper presents microlasers and optical delay device based on this concept.

T. Baba; K. Nozaki; D. Mori

2004-01-01

259

Personal cooling air filtering device  

DOEpatents

A temperature modification system for modifying the temperature of fluids includes at least one thermally conductive carbon foam element, the carbon foam element having at least one flow channel for the passage of fluids. At least one temperature modification device is provided, the temperature modification device thermally connected to the carbon foam element and adapted to modify the temperature of the carbon foam to modify the temperature of fluids flowing through the flow channels. Thermoelectric and/or thermoionic elements can preferably be used as the temperature modification device. A method for the reversible temperature modification of fluids includes the steps of providing a temperature modification system including at least one thermally conductive carbon foam element having flow channels and at least one temperature modification device, and flowing a fluid through the flow channels.

Klett, James [Knoxville, TN; Conway, Bret [Denver, NC

2002-08-13

260

Nanogap device: Fabrication and applications  

NASA Astrophysics Data System (ADS)

A nanogap device as a platform for nanoscale electronic devices is presented. Integrated nanostructures on the platform have been used to functionalize the nanogap for biosensor and molecular electronics. Nanogap devices have great potential as a tool for investigating physical phenomena at the nanoscale in nanotechnology. In this dissertation, a laterally self-aligned nanogap device is presented and its feasibility is demonstrated with a nano ZnO dot light emitting diode (LED) and the growth of a metallic sharp tip forming a subnanometer gap suitable for single molecule attachment. For realizing a nanoscale device, a resolution of patterning is critical, and many studies have been performed to overcome this limitation. The creation of a sub nanoscale device is still a challenge. To surmount the challenge, novel processes including double layer etch mask and crystallographic axis alignment have been developed. The processes provide an effective way for making a suspended nanogap device consisting of two self-aligned sharp tips with conventional lithography and 3-D micromachining using anisotropic wet chemical Si etching. As conventional lithography is employed, the nanogap device is fabricated in a wafer scale and the processes assure the productivity and the repeatability. The anisotropic Si etching determines a final size of the nanogap, which is independent of the critical dimension of the lithography used. A nanoscale light emitting device is investigated. A nano ZnO dot is directly integrated on a silicon nanogap device by Zn thermal oxidation followed by Ni and Zn blanket evaporation instead of complex and time consuming processes for integrating nanostructure. The electrical properties of the fabricated LED device are analyzed for its current-voltage characteristic and metal-semiconductor-metal model. Furthermore, the electroluminescence spectrum of the emitted light is measured with a monochromator implemented with a CCD camera to understand the optical properties. The atomically sharp metallic tips are grown by metal ion migration induced by high electric field across a nanogap. To investigate the growth mechanism, in-situ TEM is conducted and the growing is monitored. The grown dendrite nanostructures show less than 1nm curvature of radius. These nanostructures may be compatible for studying the electrical properties of single molecule.

Han, Jun Hyun

261

Catalyst patterning for nanowire devices  

NASA Technical Reports Server (NTRS)

Nanowire devices may be provided that are based on carbon nanotubes or single-crystal semiconductor nanowires. The nanowire devices may be formed on a substrate. Catalyst sites may be formed on the substrate. The catalyst sites may be formed using lithography, thin metal layers that form individual catalyst sites when heated, collapsible porous catalyst-filled microscopic spheres, microscopic spheres that serve as masks for catalyst deposition, electrochemical deposition techniques, and catalyst inks. Nanowires may be grown from the catalyst sites.

Li, Jun (Inventor); Cassell, Alan M. (Inventor); Han, Jie (Inventor)

2004-01-01

262

Indirect Blood Pressure Measuring Device  

NASA Technical Reports Server (NTRS)

Design and performance of a blood pressure recording device for pediatric use are reported. A strain gage transducer with a copper-beryllium strip as force sensing element is used to monitor skin movements and to convert them into electrical signals proportional to those displacements. Experimental tests with this device in recording of force developed above the left femoral artery of a dog accurately produced a blood pressure curve.

Hum, L.; Cole, C. E.

1973-01-01

263

Superconducting tunnel phonon pumping device  

Microsoft Academic Search

The authors present preliminary results of an investigation of a Pb-I-Pb-I-Sn-I-Sn-I-Pb superconducting amplifying tunnel device. It was found experimentally that the I-V characteristic of the Sn-I-Sn-I-Pb detector structure is altered when a DC bias current is supplied to the Pb-I-Pb generator. The device has a voltage gain Gv up to 10 and a current gain Gl ranging from 0.2 to

E. M. Rudenko; I. P. Nevirkovets

1992-01-01

264

Photonic crystal based optoelectronic devices  

Microsoft Academic Search

The potential of photonic crystals as well as critical issues using different passive devices like straight and curved waveguides and filters are discussed. Examples of active photonic crystal based devices with different designs based either on a ridge waveguide with PhCs at the end facets or on full PhC approaches (PhCs used for lateral waveguiding as well as for end

A. Forchel; M. Kamp; S. Mahnkopf; J. Zimmermann; H. Scherer; R. Maerz

2004-01-01

265

CIRSE Vascular Closure Device Registry  

PubMed Central

Purpose Vascular closure devices are routinely used after many vascular interventional radiology procedures. However, there have been no major multicenter studies to assess the safety and effectiveness of the routine use of closure devices in interventional radiology. Methods The CIRSE registry of closure devices with an anchor and a plug started in January 2009 and ended in August 2009. A total of 1,107 patients were included in the registry. Results Deployment success was 97.2%. Deployment failure specified to access type was 8.8% [95% confidence interval (95% CI) 5.0–14.5] for antegrade access and 1.8% (95% CI 1.1–2.9) for retrograde access (P = 0.001). There was no difference in deployment failure related to local PVD at the access site. Calcification was a reason for deployment failure in only <0.5% of patients. Postdeployment bleeding occurred in 6.4%, and most these (51.5%) could be managed with light manual compression. During follow-up, other device-related complications were reported in 1.3%: seven false aneurysms, three hematoma >5.9 cm, and two vessel occlusions. Conclusion The conclusion of this registry of closure devices with an anchor and a plug is that the use of this device in interventional radiology procedures is safe, with a low incidence of serious access site complications. There seems to be no difference in complications between antegrade and retrograde access and other parameters. PMID:20981425

Muller-Hulsbeck, Stefan; Libicher, Martin; Atar, Eli; Trentmann, Jens; Goffette, Pierre; Borggrefe, Jan; Zelenak, Kamil; Hooijboer, Pieter; Belli, Anna-Maria

2010-01-01

266

CIRSE Vascular Closure Device Registry  

SciTech Connect

Purpose: Vascular closure devices are routinely used after many vascular interventional radiology procedures. However, there have been no major multicenter studies to assess the safety and effectiveness of the routine use of closure devices in interventional radiology. Methods: The CIRSE registry of closure devices with an anchor and a plug started in January 2009 and ended in August 2009. A total of 1,107 patients were included in the registry. Results: Deployment success was 97.2%. Deployment failure specified to access type was 8.8% [95% confidence interval (95% CI) 5.0-14.5] for antegrade access and 1.8% (95% CI 1.1-2.9) for retrograde access (P = 0.001). There was no difference in deployment failure related to local PVD at the access site. Calcification was a reason for deployment failure in only <0.5% of patients. Postdeployment bleeding occurred in 6.4%, and most these (51.5%) could be managed with light manual compression. During follow-up, other device-related complications were reported in 1.3%: seven false aneurysms, three hematoma >5.9 cm, and two vessel occlusions. Conclusion: The conclusion of this registry of closure devices with an anchor and a plug is that the use of this device in interventional radiology procedures is safe, with a low incidence of serious access site complications. There seems to be no difference in complications between antegrade and retrograde access and other parameters.

Reekers, Jim A., E-mail: j.a.reekers@amc.uva.nl [Academic Medical Center, Department of Radiology (Netherlands); Mueller-Huelsbeck, Stefan [Academic Hospitals, Department of Radiology (Germany); Libicher, Martin [University Clinics, Department of Radiology (Germany); Atar, Eli [Hasharon Hospital, Department of Radiology (Israel); Trentmann, Jens [University Clinics Schleswig-Holstein, Department of Radiology (Germany); Goffette, Pierre [University Clinics St. Luc, Department of Radiology (Belgium); Borggrefe, Jan [University Clinics Schleswig-Holstein, Department of Radiology (Germany); Zelenak, Kamil [University Hospital, Department of Radiology (Slovakia); Hooijboer, Pieter [Scheper Ziekenhuis, Department of Radiology (Netherlands); Belli, Anna-Maria [St. Georges Hospital, Department of Radiology (United Kingdom)

2011-02-15

267

76 FR 71983 - Gastroenterology and Urology Devices Panel of the Medical Devices Advisory Committee; Notice of...  

Federal Register 2010, 2011, 2012, 2013

...Docket No. FDA-2011-N-0002] Gastroenterology and Urology Devices Panel of the Medical Devices Advisory Committee; Notice...open to the public. Name of Committee: Gastroenterology and Urology Devices Panel of the Medical Devices Advisory Committee....

2011-11-21

268

77 FR 18829 - Gastroenterology and Urology Devices Panel of the Medical Devices Advisory Committee; Notice of...  

Federal Register 2010, 2011, 2012, 2013

...Docket No. FDA-2012-N-0001] Gastroenterology and Urology Devices Panel of the Medical Devices Advisory Committee; Notice...open to the public. Name of Committee: Gastroenterology and Urology Devices Panel of the Medical Devices Advisory Committee....

2012-03-28

269

75 FR 57968 - Gastroenterology and Urology Devices Panel of the Medical Devices Advisory Committee; Notice of...  

Federal Register 2010, 2011, 2012, 2013

...Docket No. FDA-2010-N-0001] Gastroenterology and Urology Devices Panel of the Medical Devices Advisory Committee; Notice...open to the public. Name of Committee: Gastroenterology and Urology Devices Panel of the Medical Devices Advisory Committee....

2010-09-23

270

78 FR 25747 - Gastroenterology and Urology Devices Panel of the Medical Devices Advisory Committee; Notice of...  

Federal Register 2010, 2011, 2012, 2013

...Docket No. FDA-2013-N-0001] Gastroenterology and Urology Devices Panel of the Medical Devices Advisory Committee; Notice...open to the public. Name of Committee: Gastroenterology and Urology Devices Panel of the Medical Devices Advisory Committee....

2013-05-02

271

77 FR 38826 - Certain Wireless Communication Devices, Portable Music and Data Processing Devices, Computers and...  

Federal Register 2010, 2011, 2012, 2013

...337-TA-745] Certain Wireless Communication Devices, Portable Music and Data Processing Devices, Computers and Components Thereof...importation of certain wireless communication devices, portable music and data processing devices, computers and components...

2012-06-29

272

78 FR 24775 - Certain Wireless Communication Devices, Portable Music and Data Processing Devices, Computers and...  

Federal Register 2010, 2011, 2012, 2013

...337-TA-745] Certain Wireless Communication Devices, Portable Music and Data Processing Devices, Computers and Components Thereof...importation of certain wireless communication devices, portable music and data processing devices, computers and components...

2013-04-26

273

77 FR 52759 - Certain Wireless Communication Devices, Portable Music and Data Processing Devices, Computers and...  

Federal Register 2010, 2011, 2012, 2013

...337-TA-745] Certain Wireless Communication Devices, Portable Music and Data Processing Devices, Computers and Components Thereof...importation of certain wireless communication devices, portable music and data processing devices, computers and components...

2012-08-30

274

78 FR 12785 - Certain Wireless Communication Devices, Portable Music and Data Processing Devices, Computers and...  

Federal Register 2010, 2011, 2012, 2013

...337-TA-745] Certain Wireless Communication Devices, Portable Music and Data Processing Devices, Computers and Components Thereof...importation of certain wireless communication devices, portable music and data processing devices, computers and components...

2013-02-25

275

76 FR 36548 - Circulatory System Devices Panel of the Medical Devices Advisory Committee; Notice of Meeting  

Federal Register 2010, 2011, 2012, 2013

...System Devices Panel of the Medical Devices Advisory Committee...System Devices Panel of the Medical Devices Advisory Committee...introducer, loader, dilator, balloon (used to pre-dilate the...Associate Commissioner for Special Medical Programs. [FR Doc....

2011-06-22

276

77 FR 25183 - Circulatory System Devices Panel of the Medical Devices Advisory Committee; Notice of Meeting  

Federal Register 2010, 2011, 2012, 2013

...System Devices Panel of the Medical Devices Advisory Committee...System Devices Panel of the Medical Devices Advisory Committee...introducer, loader, dilator, balloon (used to pre-dilate the...Associate Commissioner for Special Medical Programs. [FR Doc....

2012-04-27

277

78 FR 11612 - Medical Devices; Pediatric Uses of Devices; Requirement for Submission of Information on...  

Federal Register 2010, 2011, 2012, 2013

...FDA-2009-N-0458] RIN 0910-AG29 Medical Devices; Pediatric Uses of Devices...the regulations on premarket approval of medical devices to include requirements relating...Act requires persons who submit certain medical device applications to include, if...

2013-02-19

278

76 FR 55398 - Immunology Devices Panel of the Medical Devices Advisory Committee: Notice of Postponement of...  

Federal Register 2010, 2011, 2012, 2013

...Drug Administration [Docket No. FDA-2011-N-0002] Immunology Devices Panel of the Medical Devices Advisory Committee...Drug Administration (FDA) is postponing the meeting of the Immunology Devices Panel of the Medical Devices Advisory Committee...

2011-09-07

279

75 FR 81282 - Circulatory System Devices Panel of the Medical Devices Advisory Committee; Notice of Meeting  

Federal Register 2010, 2011, 2012, 2013

...Administration [Docket No. FDA-2010-N-0001] Circulatory System Devices Panel of the Medical Devices Advisory Committee...will be open to the public. Name of Committee: Circulatory System Devices Panel of the Medical Devices Advisory...

2010-12-27

280

76 FR 58019 - Circulatory System Devices Panel of the Medical Devices Advisory Committee; Notice of Meeting  

Federal Register 2010, 2011, 2012, 2013

...Administration [Docket No. FDA-2011-N-0002] Circulatory System Devices Panel of the Medical Devices Advisory Committee...will be open to the public. Name of Committee: Circulatory System Devices Panel of the Medical Devices Advisory...

2011-09-19

281

SLAC All Access: Vacuum Microwave Device Department  

ScienceCinema

The Vacuum Microwave Device Department (VMDD) builds the devices that make SLAC's particle accelerators go. These devices, called klystrons, generate intense waves of microwave energy that rocket subatomic particles up to nearly the speed of light.

Haase, Andy

2014-06-13

282

77 FR 72924 - Taxable Medical Devices  

Federal Register 2010, 2011, 2012, 2013

...that 21 CFR part 876 (Gastroenterology- Urology Devices) be removed from the list of...21 CFR part 876 (Gastroenterology--Urology Devices), 21 CFR part 878 (General...21 CFR part 876 (Gastroenterology--Urology Devices) and product code EXH. The...

2012-12-07

283

14 CFR 23.459 - Special devices.  

...Structure Ailerons and Special Devices § 23.459 Special devices. The loading for special devices using aerodynamic surfaces (such as slots and spoilers) must be determined from test data. Ground...

2014-01-01

284

14 CFR 23.459 - Special devices.  

Code of Federal Regulations, 2012 CFR

...Structure Ailerons and Special Devices § 23.459 Special devices. The loading for special devices using aerodynamic surfaces (such as slots and spoilers) must be determined from test data. Ground...

2012-01-01

285

78 FR 18233 - Medical Devices; Technical Amendment  

Federal Register 2010, 2011, 2012, 2013

...Docket No. FDA-2013-N-0011] Medical Devices; Technical Amendment AGENCY...Administration (FDA) is amending certain medical device regulations to correct minor errors...affecting certain regulations regarding medical devices. Publication of this...

2013-03-26

286

Other Products and Devices to Improve Hearing  

MedlinePLUS

... Products and Devices to Improve Hearing Links Other Products and Devices to Improve Hearing Assistive Listening Devices ... no hearing in one ear. Personal Sound Amplification Products Personal Sound Amplification Products (PSAPs), or sound amplifiers, ...

287

Electronic load for testing power generating devices  

NASA Technical Reports Server (NTRS)

Instrument tests various electric power generating devices by connecting the devices to the input of the load and comparing their outputs with a reference voltage. The load automatically adjusts until voltage output of the power generating device matches the reference.

Friedman, E. B.; Stepfer, G.

1968-01-01

288

77 FR 40735 - Unique Device Identification System  

Federal Register 2010, 2011, 2012, 2013

...Regulatory Hearing Before the Food and Drug Administration We...to clarify that the device history record is to include any UDI...already requires the device history record to include...inspection, that the device history record...

2012-07-10

289

Buying Medical Devices and Diagnostic Tests Online  

MedlinePLUS

... A to Z Index Follow FDA En Español Enter Search terms Home Food Drugs Medical Devices Radiation-Emitting Products ... been altered or updated since it was archived. Enter Search terms Medical Devices Home Medical Devices Resources for You ( ...

290

Control System for Prosthetic Devices  

NASA Technical Reports Server (NTRS)

A control system and method for prosthetic devices is provided. The control system comprises a transducer for receiving movement from a body part for generating a sensing signal associated with that of movement. The sensing signal is processed by a linearizer for linearizing the sensing signal to be a linear function of the magnitude of the distance moved by the body part. The linearized sensing signal is normalized to be a function of the entire range of body part movement from the no-shrug position of the moveable body part through the full-shrg position of the moveable body part. The normalized signal is divided into a plurality of discrete command signals. The discrete command signals are used by typical converter devices which are in operational association with the prosthetic device. The converter device uses the discrete command signals for driving the moveable portions of the prosthetic device and its sub-prosthesis. The method for controlling a prosthetic device associated with the present invention comprises the steps of receiving the movement from the body part, generating a sensing signal in association with the movement of the body part, linearizing the sensing signal to be a linear function of the magnitude of the distance moved by the body part, normalizing the linear signal to be a function of the entire range of the body part movement, dividing the normalized signal into a plurality of discrete command signals, and implementing the plurality of discrete command signals for driving the respective moveable prosthesis device and its sub-prosthesis.

Bozeman, Richard J. (Inventor)

1996-01-01

291

Survey of cryogenic semiconductor devices  

SciTech Connect

Improved reliability and electronic performance can be achieved in a system operated at cryogenic temperatures because of the reduction in mechanical insult and in disruptive effects of thermal energy on electronic devices. Continuing discoveries of new superconductors with ever increasing values of T{sub c} above that of liquid nitrogen temperature (LNT) have provided incentive for developing semiconductor electronic systems that may also operate in the superconductor`s liquid nitrogen bath. Because of the interest in high-temperature superconductor (HTS) devices, liquid nitrogen is the cryogen of choice and LNT is the temperature on which this review is focused. The purpose of this survey is to locate and assemble published information comparing the room temperature (298 K), performance of commercially available conventional and hybrid semiconductor device with their performance at LNT (77K), to help establish their candidacy as cryogenic electronic devices specifically for use at LNT. The approach to gathering information for this survey included the following activities. Periodicals and proceedings were searched for information on the behavior of semiconductor devices at LNT. Telephone calls were made to representatives of semiconductor industries, to semiconductor subcontractors, to university faculty members prominent for their research in the area of cryogenic semiconductors, and to representatives of the National Aeronautics and Space Administration (NASA) and NASA subcontractors. The sources and contacts are listed with their responses in the introduction, and a list of references appears at the end of the survey.

Talarico, L.J.; McKeever, J.W.

1996-04-01

292

Inducer Hydrodynamic Load Measurement Devices  

NASA Technical Reports Server (NTRS)

Marshall Space Flight Center (MSFC) has demonstrated two measurement devices for sensing and resolving the hydrodynamic loads on fluid machinery. The first - a derivative of the six-component wind tunnel balance - senses the forces and moments on the rotating device through a weakened shaft section instrumented with a series of strain gauges. This rotating balance was designed to directly measure the steady and unsteady hydrodynamic loads on an inducer, thereby defining both the amplitude and frequency content associated with operating in various cavitation modes. The second device - a high frequency response pressure transducer surface mounted on a rotating component - was merely an extension of existing technology for application in water. MSFC has recently completed experimental evaluations of both the rotating balance and surface-mount transducers in a water test loop. The measurement bandwidth of the rotating balance was severely limited by the relative flexibility of the device itself, resulting in an unexpectedly low structural bending mode and invalidating the higher-frequency response data. Despite these limitations, measurements confirmed that the integrated loads on the four-bladed inducer respond to both cavitation intensity and cavitation phenomena. Likewise, the surface-mount pressure transducers were subjected to a range of temperatures and flow conditions in a non-rotating environment to record bias shifts and transfer functions between the transducers and a reference device. The pressure transducer static performance was within manufacturer's specifications and dynamic response accurately followed that of the reference.

Skelley, Stephen E.; Zoladz, Thomas F.; Turner, Jim (Technical Monitor)

2002-01-01

293

Graphene based flexible electrochromic devices.  

PubMed

Graphene emerges as a viable material for optoelectronics because of its broad optical response and gate-tunable properties. For practical applications, however, single layer graphene has performance limits due to its small optical absorption defined by fundamental constants. Here, we demonstrated a new class of flexible electrochromic devices using multilayer graphene (MLG) which simultaneously offers all key requirements for practical applications; high-contrast optical modulation over a broad spectrum, good electrical conductivity and mechanical flexibility. Our method relies on electro-modulation of interband transition of MLG via intercalation of ions into the graphene layers. The electrical and optical characterizations reveal the key features of the intercalation process which yields broadband optical modulation up to 55 per cent in the visible and near-infrared. We illustrate the promises of the method by fabricating reflective/transmissive electrochromic devices and multi-pixel display devices. Simplicity of the device architecture and its compatibility with the roll-to-roll fabrication processes, would find wide range of applications including smart windows and display devices. We anticipate that this work provides a significant step in realization of graphene based optoelectronics. PMID:25270391

Polat, Emre O; Balc?, Osman; Kocabas, Coskun

2014-01-01

294

Novel optically variable color devices  

NASA Astrophysics Data System (ADS)

The recently introduced ROLICURE TM PEARL is a novel optically variable device (OVD) ideally suited for security applications. It may hold high resolution images, (micro-) text or graphical designs. Upon tilt or rotation high contrast positive/negative flips are observed. The optical effect of these devices is based on a proprietary technology of Rolic and includes light scattering at patterned anisotropic microstructures. Since these microstructures are non-periodic no rainbow colors are generated, making these devices easy to authenticate and clearly distinguishable from standard holograms. In this paper, we describe how to modify the optical appearance of our - a priori - colorless ROLICURE TM PEARL feature by addition of distinct color-shift thus further increasing its level of protection and meeting design requirements. This is accomplished by optical interference at additional dielectric and metallic layers in combination with the ROLICURE TM PEARL scattering microstructure. Various configurations are conceivable and have been realised in our labs. Depending on the nature of its dielectric layers red, green and blue colors are obtained and respective photospectra will be presented. While the optical appearance remains attractively bright, excellent color saturation is achievable. Independently from the color-shift which originates from changes of the optical path length under various viewing angles, the contrast inversion of the image is still present and is visualized when the device is tilted or rotated. In general, images of these security devices are easily recognizable within wide viewing angles without need of a point light source.

Stalder, Martin; Seils, Frank

2006-02-01

295

Scaling device for photographic images  

NASA Technical Reports Server (NTRS)

A scaling device projects a known optical pattern into the field of view of a camera, which can be employed as a reference scale in a resulting photograph of a remote object, for example. The device comprises an optical beam projector that projects two or more spaced, parallel optical beams onto a surface of a remotely located object to be photographed. The resulting beam spots or lines on the object are spaced from one another by a known, predetermined distance. As a result, the size of other objects or features in the photograph can be determined through comparison of their size to the known distance between the beam spots. Preferably, the device is a small, battery-powered device that can be attached to a camera and employs one or more laser light sources and associated optics to generate the parallel light beams. In a first embodiment of the invention, a single laser light source is employed, but multiple parallel beams are generated thereby through use of beam splitting optics. In another embodiment, multiple individual laser light sources are employed that are mounted in the device parallel to one another to generate the multiple parallel beams.

Rivera, Jorge E. (Inventor); Youngquist, Robert C. (Inventor); Cox, Robert B. (Inventor); Haskell, William D. (Inventor); Stevenson, Charles G. (Inventor)

2005-01-01

296

Inducer Hydrodynamic Load Measurement Devices  

NASA Technical Reports Server (NTRS)

Marshall Space Flight Center (MSFC) has demonstrated two measurement devices for sensing and resolving the hydrodynamic loads on fluid machinery. The first - a derivative of the six component wind tunnel balance - senses the forces and moments on the rotating device through a weakened shaft section instrumented with a series of strain gauges. This "rotating balance" was designed to directly measure the steady and unsteady hydrodynamic loads on an inducer, thereby defining both the amplitude and frequency content associated with operating in various cavitation modes. The second device - a high frequency response pressure transducer surface mounted on a rotating component - was merely an extension of existing technology for application in water. MSFC has recently completed experimental evaluations of both the rotating balance and surface-mount transducers in a water test loop. The measurement bandwidth of the rotating balance was severely limited by the relative flexibility of the device itself, resulting in an unexpectedly low structural bending mode and invalidating the higher frequency response data. Despite these limitations, measurements confirmed that the integrated loads on the four-bladed inducer respond to both cavitation intensity and cavitation phenomena. Likewise, the surface-mount pressure transducers were subjected to a range of temperatures and flow conditions in a non-rotating environment to record bias shifts and transfer functions between the transducers and a reference device. The pressure transducer static performance was within manufacturer's specifications and dynamic response accurately followed that of the reference.

Skelley, Stephen E.; Zoladz, Thomas F.

2002-01-01

297

Aerosol can waste disposal device  

DOEpatents

Disclosed is a device for removing gases and liquid from containers. The device punctures the bottom of a container for purposes of exhausting gases and liquid from the container without their escaping into the atmosphere. The device includes an inner cup or cylinder having a top portion with an open end for receiving a container and a bottom portion which may be fastened to a disposal or waste container in a substantially leak-proof manner. A piercing device is mounted in the lower portion of the inner cylinder for puncturing the can bottom placed in the inner cylinder. An outer cylinder having an open end and a closed end fits over the top portion of the inner cylinder in telescoping engagement. A force exerted on the closed end of the outer cylinder urges the bottom of a can in the inner cylinder into engagement with the piercing device in the bottom of the inner cylinder to form an opening in the can bottom, thereby permitting the contents of the can to enter the disposal container. 7 figures.

O'Brien, M.D.; Klapperick, R.L.; Bell, C.

1993-12-21

298

Graphene based flexible electrochromic devices  

NASA Astrophysics Data System (ADS)

Graphene emerges as a viable material for optoelectronics because of its broad optical response and gate-tunable properties. For practical applications, however, single layer graphene has performance limits due to its small optical absorption defined by fundamental constants. Here, we demonstrated a new class of flexible electrochromic devices using multilayer graphene (MLG) which simultaneously offers all key requirements for practical applications; high-contrast optical modulation over a broad spectrum, good electrical conductivity and mechanical flexibility. Our method relies on electro-modulation of interband transition of MLG via intercalation of ions into the graphene layers. The electrical and optical characterizations reveal the key features of the intercalation process which yields broadband optical modulation up to 55 per cent in the visible and near-infrared. We illustrate the promises of the method by fabricating reflective/transmissive electrochromic devices and multi-pixel display devices. Simplicity of the device architecture and its compatibility with the roll-to-roll fabrication processes, would find wide range of applications including smart windows and display devices. We anticipate that this work provides a significant step in realization of graphene based optoelectronics.

Polat, Emre O.; Balc?, Osman; Kocabas, Coskun

2014-10-01

299

Graphene based flexible electrochromic devices  

PubMed Central

Graphene emerges as a viable material for optoelectronics because of its broad optical response and gate-tunable properties. For practical applications, however, single layer graphene has performance limits due to its small optical absorption defined by fundamental constants. Here, we demonstrated a new class of flexible electrochromic devices using multilayer graphene (MLG) which simultaneously offers all key requirements for practical applications; high-contrast optical modulation over a broad spectrum, good electrical conductivity and mechanical flexibility. Our method relies on electro-modulation of interband transition of MLG via intercalation of ions into the graphene layers. The electrical and optical characterizations reveal the key features of the intercalation process which yields broadband optical modulation up to 55 per cent in the visible and near-infrared. We illustrate the promises of the method by fabricating reflective/transmissive electrochromic devices and multi-pixel display devices. Simplicity of the device architecture and its compatibility with the roll-to-roll fabrication processes, would find wide range of applications including smart windows and display devices. We anticipate that this work provides a significant step in realization of graphene based optoelectronics. PMID:25270391

Polat, Emre O.; Balc?, Osman; Kocabas, Coskun

2014-01-01

300

Event-recording devices with identification codes  

NASA Technical Reports Server (NTRS)

A recording device allows wireless interrogation to determine its identity and its state. The state indicates whether one or more physical or chemical events have taken place. In effect, the one or more physical or chemical events are recorded by the device. The identity of the device allows it to be distinguished from a number of similar devices. The recording device may be used in an array of devices that allows wireless probing by an interrogation unit. When probed, each device tells the interrogator who it is and what state it is in. The devices allow multiple use and the interrogator may use a logical reset to determine the state of each device. The interrogator can thus easily identify particular items in an array that have reached a particular condition. The device may record the status of each device in a database to maintain a history for each.

Watters, David G. (Inventor); Huestis, David L. (Inventor); Bahr, Alfred J. (Inventor); Vidmar, Robert J. (Inventor)

2003-01-01

301

Semiconductor-based, large-area, flexible, electronic devices  

DOEpatents

Novel articles and methods to fabricate the same resulting in flexible, large-area, triaxially textured, single-crystal or single-crystal-like, semiconductor-based, electronic devices are disclosed. Potential applications of resulting articles are in areas of photovoltaic devices, flat-panel displays, thermophotovoltaic devices, ferroelectric devices, light emitting diode devices, computer hard disc drive devices, magnetoresistance based devices, photoluminescence based devices, non-volatile memory devices, dielectric devices, thermoelectric devices and quantum dot laser devices.

Goyal, Amit (Knoxville, TN)

2011-03-15

302

Optical to optical interface device  

NASA Technical Reports Server (NTRS)

The development, fabrication, and testing of a preliminary model of an optical-to-optical (noncoherent-to-coherent) interface device for use in coherent optical parallel processing systems are described. The developed device demonstrates a capability for accepting as an input a scene illuminated by a noncoherent radiation source and providing as an output a coherent light beam spatially modulated to represent the original noncoherent scene. The converter device developed under this contract employs a Pockels readout optical modulator (PROM). This is a photosensitive electro-optic element which can sense and electrostatically store optical images. The stored images can be simultaneously or subsequently readout optically by utilizing the electrostatic storage pattern to control an electro-optic light modulating property of the PROM. The readout process is parallel as no scanning mechanism is required. The PROM provides the functions of optical image sensing, modulation, and storage in a single active material.

Oliver, D. S.; Vohl, P.; Nisenson, P.

1972-01-01

303

Metamaterial mirrors in optoelectronic devices.  

PubMed

The phase reversal that occurs when light is reflected from a metallic mirror produces a standing wave with reduced intensity near the reflective surface. This effect is highly undesirable in optoelectronic devices that use metal films as both electrical contacts and optical mirrors, because it dictates a minimum spacing between the metal and the underlying active semiconductor layers, therefore posing a fundamental limit to the overall thickness of the device. Here, we show that this challenge can be circumvented by using a metamaterial mirror whose reflection phase is tunable from that of a perfect electric mirror (? = ?) to that of a perfect magnetic mirror (? = 0). This tunability in reflection phase can also be exploited to optimize the standing wave profile in planar devices to maximize light-matter interaction. Specifically, we show that light absorption and photocurrent generation in a sub-100 nm active semiconductor layer of a model solar cell can be enhanced by ?20% over a broad spectral band. PMID:24952475

Esfandyarpour, Majid; Garnett, Erik C; Cui, Yi; McGehee, Michael D; Brongersma, Mark L

2014-07-01

304

Survey of hydrogen monitoring devices  

SciTech Connect

Presented are results of a survey of commercially available monitoring devices suitable for hydrogen detection in the secondary containment vessel of a nuclear power plant during the post postulated accident period. Available detectors were grouped into the following five classes: combustion, solid state, electrochemical, thermal conductivity, and absorption. The performance of most available sensors is likely to deteriorate when exposed to the postulated conditions which include moisture, which could be at high temperature, and radioactive noncondensibles. Of the commercial devices, those using metallic filament thermal conductivity detectors seem least susceptible to performance change. Absorption detectors are best suited for this monitoring task but the only available device is designed for pipeline corrosion assessment. Initiation of experimental study to assess apparent deficiencies of commercial detectors is recommended. Also recommended is an analytical/experimental effort to determine the optimum detector array for monitoring in the secondary containment vessels.

Lai, W.

1981-01-01

305

Spectral utilization in thermophotovoltaic devices  

SciTech Connect

Multilayer assemblies of epitaxially-grown, III-V semiconductor materials are being investigated for use in thermophotovoltaic (TPV) energy conversion applications. It has been observed that thick, highly-doped semiconductor layers within cell architectures dominate the parasitic free-carrier absorption (FCA) of devices at wavelengths above the bandgap of the semiconductor material. In this work, the wavelength-dependent, free-carrier absorption of p- and n-type InGaAs layers grown epitaxially onto semi-insulating (SI) InP substrates has been measured and related to the total absorption of long-wavelength photons in thermophotovoltaic devices. The optical responses of the TPV cells are then used in the calculation of spectral utilization factors and device efficiencies.

Clevenger, M.B.; Murray, C.S.

1997-12-31

306

Metamaterial mirrors in optoelectronic devices  

NASA Astrophysics Data System (ADS)

The phase reversal that occurs when light is reflected from a metallic mirror produces a standing wave with reduced intensity near the reflective surface. This effect is highly undesirable in optoelectronic devices that use metal films as both electrical contacts and optical mirrors, because it dictates a minimum spacing between the metal and the underlying active semiconductor layers, therefore posing a fundamental limit to the overall thickness of the device. Here, we show that this challenge can be circumvented by using a metamaterial mirror whose reflection phase is tunable from that of a perfect electric mirror (? = ?) to that of a perfect magnetic mirror (? = 0). This tunability in reflection phase can also be exploited to optimize the standing wave profile in planar devices to maximize light-matter interaction. Specifically, we show that light absorption and photocurrent generation in a sub-100 nm active semiconductor layer of a model solar cell can be enhanced by ~20% over a broad spectral band.

Esfandyarpour, Majid; Garnett, Erik C.; Cui, Yi; McGehee, Michael D.; Brongersma, Mark L.

2014-07-01

307

21 CFR 876.5310 - Nonimplanted, peripheral electrical continence device.  

Code of Federal Regulations, 2012 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Therapeutic Devices § 876.5310 Nonimplanted, peripheral electrical continence device. (a)...

2012-04-01

308

21 CFR 876.5320 - Nonimplanted electrical continence device.  

Code of Federal Regulations, 2013 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Therapeutic Devices § 876.5320 Nonimplanted electrical continence device. (a)...

2013-04-01

309

21 CFR 876.5320 - Nonimplanted electrical continence device.  

Code of Federal Regulations, 2012 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Therapeutic Devices § 876.5320 Nonimplanted electrical continence device. (a)...

2012-04-01

310

21 CFR 876.5020 - External penile rigidity devices.  

Code of Federal Regulations, 2011 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Therapeutic Devices § 876.5020 External penile rigidity devices. (a) Identification ....

2011-04-01

311

21 CFR 876.5020 - External penile rigidity devices.  

Code of Federal Regulations, 2012 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Therapeutic Devices § 876.5020 External penile rigidity devices. (a) Identification ....

2012-04-01

312

21 CFR 876.5270 - Implanted electrical urinary continence device.  

Code of Federal Regulations, 2011 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Therapeutic Devices § 876.5270 Implanted electrical urinary continence device. (a)...

2011-04-01

313

21 CFR 876.5310 - Nonimplanted, peripheral electrical continence device.  

Code of Federal Regulations, 2011 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Therapeutic Devices § 876.5310 Nonimplanted, peripheral electrical continence device. (a)...

2011-04-01

314

21 CFR 876.5310 - Nonimplanted, peripheral electrical continence device.  

Code of Federal Regulations, 2010 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Therapeutic Devices § 876.5310 Nonimplanted, peripheral electrical continence device. (a)...

2010-04-01

315

21 CFR 876.5320 - Nonimplanted electrical continence device.  

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Therapeutic Devices § 876.5320 Nonimplanted electrical continence device. (a)...

2014-04-01

316

21 CFR 876.5270 - Implanted electrical urinary continence device.  

Code of Federal Regulations, 2010 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Therapeutic Devices § 876.5270 Implanted electrical urinary continence device. (a)...

2010-04-01

317

21 CFR 876.5270 - Implanted electrical urinary continence device.  

Code of Federal Regulations, 2012 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Therapeutic Devices § 876.5270 Implanted electrical urinary continence device. (a)...

2012-04-01

318

21 CFR 876.5310 - Nonimplanted, peripheral electrical continence device.  

Code of Federal Regulations, 2013 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Therapeutic Devices § 876.5310 Nonimplanted, peripheral electrical continence device. (a)...

2013-04-01

319

21 CFR 876.5320 - Nonimplanted electrical continence device.  

Code of Federal Regulations, 2010 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Therapeutic Devices § 876.5320 Nonimplanted electrical continence device. (a)...

2010-04-01

320

21 CFR 876.5320 - Nonimplanted electrical continence device.  

Code of Federal Regulations, 2011 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Therapeutic Devices § 876.5320 Nonimplanted electrical continence device. (a)...

2011-04-01

321

21 CFR 876.5270 - Implanted electrical urinary continence device.  

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Therapeutic Devices § 876.5270 Implanted electrical urinary continence device. (a)...

2014-04-01

322

21 CFR 876.5310 - Nonimplanted, peripheral electrical continence device.  

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Therapeutic Devices § 876.5310 Nonimplanted, peripheral electrical continence device. (a)...

2014-04-01

323

21 CFR 876.5020 - External penile rigidity devices.  

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Therapeutic Devices § 876.5020 External penile rigidity devices. (a) Identification....

2014-04-01

324

21 CFR 876.5020 - External penile rigidity devices.  

Code of Federal Regulations, 2013 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Therapeutic Devices § 876.5020 External penile rigidity devices. (a) Identification ....

2013-04-01

325

21 CFR 876.5270 - Implanted electrical urinary continence device.  

Code of Federal Regulations, 2013 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Therapeutic Devices § 876.5270 Implanted electrical urinary continence device. (a)...

2013-04-01

326

21 CFR 876.5020 - External penile rigidity devices.  

Code of Federal Regulations, 2010 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Therapeutic Devices § 876.5020 External penile rigidity devices. (a) Identification ....

2010-04-01

327

21 CFR 890.5050 - Daily activity assist device.  

Code of Federal Regulations, 2011 CFR

...DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES PHYSICAL MEDICINE DEVICES Physical Medicine Therapeutic Devices § 890.5050 Daily activity assist device. (a) Identification. A...

2011-04-01

328

21 CFR 890.5050 - Daily activity assist device.  

...DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES PHYSICAL MEDICINE DEVICES Physical Medicine Therapeutic Devices § 890.5050 Daily activity assist device. (a) Identification. A...

2014-04-01

329

21 CFR 890.5050 - Daily activity assist device.  

Code of Federal Regulations, 2012 CFR

...DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES PHYSICAL MEDICINE DEVICES Physical Medicine Therapeutic Devices § 890.5050 Daily activity assist device. (a) Identification. A...

2012-04-01

330

21 CFR 890.5050 - Daily activity assist device.  

Code of Federal Regulations, 2013 CFR

...DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES PHYSICAL MEDICINE DEVICES Physical Medicine Therapeutic Devices § 890.5050 Daily activity assist device. (a) Identification. A...

2013-04-01

331

Artificial lifting device and method  

SciTech Connect

An artificial lifting device has a downhole valve which intermittently directs operating gas to the top of a collection chamber to promote the lifting of oil below the valve upwardly through an annulus defined between a cylindrical housing supporting the valve and an external cylindrical member through which the housing extends. Gas is alternately injected to the top of the chamber through an injection port and vented to the surface through a vent port. An exhaust conduit, separate from the source of pressurized gas running from the surface to the valve, communicates the vent port with the surface when the device is in the vent mode.

Blann, J.R.; Abercrombie, B.A.; West, R.C.

1984-01-24

332

Gas sensing with acoustic devices  

SciTech Connect

A survey is made of acoustic devices that are suitable as gas and vapor sensors. This survey focuses on attributes such as operating frequency, mass sensitivity, quality factor (Q), and their ability to be fabricated on a semiconductor substrate to allow integration with electronic circuitry. The treatment of the device surface with chemically-sensitive films to detect species of interest is discussed. Strategies for improving discrimination are described, including sensor arrays and species concentration and separation schemes. The advantages and disadvantages of integrating sensors with microelectronics are considered, along with the effect on sensitivity of scaling acoustic gas sensors to smaller size.

Martin, S.J.; Frye, G.C. [Sandia National Labs., Albuquerque, NM (United States); Spates, J.J. [Ktech Corp., Albuquerque, NM (United States); Butler, M.A. [Sandia National Labs., Albuquerque, NM (United States)

1996-12-31

333

Metamaterials for terahertz polarimetric devices  

SciTech Connect

We present experimental and numerical investigations of planar terahertz metamaterial structures designed to interact with the state of polarization. The dependence of metamaterial resonances on polarization results in unique amplitude and phase characteristics of the terahertz transmission, providing the basis for polarimetric terahertz devices. We highlight some potential applications for polarimetric devices and present simulations of a terahertz quarter-wave plate and a polarizing terahertz beam splitter. Although this work was performed at tcrahertz frequencies, it may find applications in other frequency ranges as well.

O'hara, John F [Los Alamos National Laboratory; Taylor, Antoinette J [Los Alamos National Laboratory; Smirnova, Evgenya [Los Alamos National Laboratory; Azad, Abul [Los Alamos National Laboratory; Chen, Hou-tong [Los Alamos National Laboratory; Peralta, Xomalin G [SNL; Brener, Igal [SNL

2008-01-01

334

Metamaterials for terahertz polarimetric devices  

SciTech Connect

We present experimental and numerical investigations of planar terahertz metamaterial structures designed to interact with the state of polarization. The dependence of metamaterial resonances on polarization results in unique amplitude and phase characteristics of the terahertz transmission, providing the basis for polarimetric terahertz devices. We highlight some potential applications for polarimetric devices and present simulations of a terahertz quarter-wave plate and a polarizing terahertz beam splitter. Although this work was performed at terahertz frequencies, it may find applications in other frequency ranges as well.

O'hara, John F [Los Alamos National Laboratory; Taylor, Antoinette J [Los Alamos National Laboratory; Smirnova, Evgenya [Los Alamos National Laboratory; Azad, Abul [Los Alamos National Laboratory

2008-01-01

335

Solid-State Device Theory  

NSDL National Science Digital Library

Written by Tony R. Kuphaldt, this chapter of All About Circuit's third volume on Semiconductors "will cover the physics behind the operation of semiconductor devices and show how these principles are applied in several different types of semiconductor devices." The chapter is divided up into fifteen sections, on topics from quantum physics to junction diodes to thyristors. Each section has clear illustrations and a concise, bulleted review of what was covered at the end, and the resource as a whole is excellent for use in applied physics classrooms.

Kuphaldt, Tony R.

2008-07-03

336

Beta ray flux measuring device  

DOEpatents

A beta ray flux measuring device in an activated member in-core instrumentation system for pressurized water reactors. The device includes collector rings positioned about an axis in the reactor's pressure boundary. Activated members such as hydroballs are positioned within respective ones of the collector rings. A response characteristic such as the current from or charge on a collector ring indicates the beta ray flux from the corresponding hydroball and is therefore a measure of the relative nuclear power level in the region of the reactor core corresponding to the specific exposed hydroball within the collector ring.

Impink, Jr., Albert J. (Murrysville, PA); Goldstein, Norman P. (Murrysville, PA)

1990-01-01

337

Surface-micromachined microfluidic devices  

DOEpatents

Microfluidic devices are disclosed which can be manufactured using surface-micromachining. These devices utilize an electroosmotic force or an electromagnetic field to generate a flow of a fluid in a microchannel that is lined, at least in part, with silicon nitride. Additional electrodes can be provided within or about the microchannel for separating particular constituents in the fluid during the flow based on charge state or magnetic moment. The fluid can also be pressurized in the channel. The present invention has many different applications including electrokinetic pumping, chemical and biochemical analysis (e.g. based on electrophoresis or chromatography), conducting chemical reactions on a microscopic scale, and forming hydraulic actuators.

Galambos, Paul C. (Albuquerque, NM); Okandan, Murat (Albuquerque, NM); Montague, Stephen (Albuquerque, NM); Smith, James H. (Redmond, WA); Paul, Phillip H. (Livermore, CA); Krygowski, Thomas W. (Cortlandt Manor, NY); Allen, James J. (Albuquerque, NM); Nichols, Christopher A. (Hauppauge, NY); Jakubczak, II, Jerome F. (Rio Rancho, NM)

2003-01-01

338

White organic light emitting devices  

NASA Astrophysics Data System (ADS)

The complexity of white organic light emitting devices (WOLEDs) stem from the fact that multiple dopants must typically be incorporated in devices such that broad emission over the visible range is achieved. Several structures are demonstrated that emit white light using electrophosphorescent dopants co-doped into a single emissive layer or into 'bands'. Also, a novel technique that uses emission from excimers and dimers is elucidated. Platinum and iridium electrophosphorescent dopants have the demonstrated ability to harness both singlet and triplet excitons, and thereby extend the theoretical limit of device internal quantum efficiency to 100%. Also, electrophosphorescent dopants are shown to be very effective at increasing the efficiency of fluorescent devices by non-radiatively transferring energy from the triplet manifold of the phosphor to the singlet manifold of the fluorophore via phosphor sensitized fluorescence. Co-doping a phosphor and a fluorophore into a single host matrix enables 100% triplet-to-singlet energy transfer, and simultaneous emission from both dopants generates white light. The long diffusion length of triplet excitons enables the design of devices with several juxtaposed emissive bands. The diffusion length of triplets is far greater than singlets, since they have several orders of magnitude smaller radiative decay rates than triplets. Assuming that triplet excitons form in a narrow region of a host and that excitons then diffuse throughout, blue, orange and red dopants are situated within the host such that excitons are partitioned among the dopants in order to produce white light from a combination of emission from all dopants. A single excimeric dopant is shown to produce emission over the entire visible spectrum, and its use enables the design and fabrication of white devices similar to the principles used for monochromic devices. The excimer state is studied in terms of its steady-state and transient photophysical processes, and its application in devices. Due to the similarity of ease with which WOLEDs with excimers are fabricated, p-i-n WOLEDs were studied in terms of improving power efficiency and increasing operational lifetime. P-i-n WOLEDs employing excimers have some of the highest reported power efficiencies, and future directions inserting this technology into commercial applications are discussed.

D'Andrade, Brian W.

339

Silicon carbide for power devices  

Microsoft Academic Search

An overview of the status of SiC technology for power devices is discussed. 4H-SiC is the most desirable SiC polytype for power devices because of its superior electron transport properties. Micropipe defect densities in 4H-SiC have been dramatically reduced, with 0.8 cm-2 being demonstrated on a 35 mm wafer. Interface trap densities of 1×1011 cm-2 eV-1 at the oxide\\/SiC interface

J. W. Palmour; R. Singh; R. C. Glass; O. Kordina

1997-01-01

340

Inertial impaction air sampling device  

DOEpatents

An inertial impactor is designed which is to be used in an air sampling device for collection of respirable size particles in ambient air. The device may include a graphite furnace as the impaction substrate in a small-size, portable, direct analysis structure that gives immediate results and is totally self-contained allowing for remote and/or personal sampling. The graphite furnace collects suspended particles transported through the housing by means of the air flow system, and these particles may be analyzed for elements, quantitatively and qualitatively, by atomic absorption spectrophotometry. 3 figs.

Dewhurst, K.H.

1990-05-22

341

Condensate-removal device for heat exchangers  

NASA Technical Reports Server (NTRS)

Device comprises array of perforated tubes manifolded together and connected to a vacuum suction device. Vacuum applied to these tubes pulls mixture of condensate and effluent gas through perforations and along length of tubes to discharge device. Discharge device may be a separator which separates water vapor from effluent air and allows recirculation of both of them.

Trusch, R. B.; Oconnor, E. W.

1973-01-01

342

Bolometric Device Based on Fluxoid Quantization  

NASA Technical Reports Server (NTRS)

The temperature dependence of fluxoid quantization in a superconducting loop. The sensitivity of the device is expected to surpass that of other superconducting- based bolometric devices, such as superconducting transition-edge sensors and superconducting nanowire devices. Just as important, the proposed device has advantages in sample fabrication.

Bonetti, Joseph A.; Kenyon, Matthew E.; Leduc, Henry G.; Day, Peter K.

2010-01-01

343

Handheld Devices for Ubiquitous Learning and Analyzing  

Microsoft Academic Search

Wireless handheld devices (WHDs) include but are not limited to cellphones, personal digital assistants and handheld gaming devices. Despite their differences, WHDs offer similar capabilities as they evolve technologically and become staples of American culture. Indeed, students and teachers are increasingly likely to own WHDs, offering educators and learners opportunities to harness the affordances such devices provide. The Handheld Devices

Edward Dieterle

344

The Simplicity Device: Your Personal Mobile Representative  

Microsoft Academic Search

In this paper we present the concept of a mobile phone acting as the user representative in the digital world. Such an enhanced mobile phone, which we call the Simplicity Device, can store relevant user data and communicate with other devices. Therefore, context-aware services and applications provided by the Simplicity Device or other devices can be tailored to the users

Giovanni Bartolomeo; Francesca Martire; Enrico Rukzio; Stefano Salsano; Nicola Blefari Melazzi; Chie Noda; John Hamard; Alexander De Luca

345

Providing device integration with OPC UA  

Microsoft Academic Search

OPC UA allows the company wide access and integration of information. One important part of this information system is the automation system and its automation devices. The important issue for presenting devices in such an enterprise system is standardization of device representation. This document provides a proposal on how to standardize the presentation of devices based on a comparison of

Thomas Hadlich

2006-01-01

346

OPC UA based Field Device Integration  

Microsoft Academic Search

Today the two technologies electronic device description language and field device tool exist for device integration. This paper describes a concept that integrates the advantages of both technologies into a single consistent concept. The new concept defines a model for device integration and a client-server architecture that makes use of the various advantages of OPC Unified Architecture. The authors validated

Daniel Grossmann; Klaus Bender; Benjamin Danzer

2008-01-01

347

Input Devices for Young Handicapped Children.  

ERIC Educational Resources Information Center

The versatility of the computer can be expanded considerably for young handicapped children by using input devices other than the typewriter-style keyboard. Input devices appropriate for young children can be classified into four categories: alternative keyboards, contact switches, speech input devices, and cursor control devices. Described are…

Morris, Karen

348

Towards Automatic Device Configuration in Smart Environments  

Microsoft Academic Search

As the number of mobile devices we carry grows, the job of managing those devices throughout the day becomes cumbersome. In addition, the ability to use mobile devices in unethical ways without being detected is becoming widespread (13-14). It is desirable for mobile devices to automatically configure themselves based on the context of the environment and user preferences for both

Kay Connelly; Ashraf Khalil

2003-01-01

349

Flexible molecular-scale electronic devices.  

PubMed

Flexible materials and devices could be exploited in light-emitting diodes, electronic circuits, memory devices, sensors, displays, solar cells and bioelectronic devices. Nanoscale elements such as thin films, nanowires, nanotubes and nanoparticles can also be incorporated into the active films of mechanically flexible devices. Large-area devices containing extremely thin films of molecular materials represent the ultimate scaling of flexible devices based on organic materials, but the influence of bending and twisting on the electrical and mechanical stability of such devices has never been examined. Here, we report the fabrication and characterization of two-terminal electronic devices based on self-assembled monolayers of alkyl or aromatic thiol molecules on flexible substrates. We find that the charge transport characteristics of the devices remain stable under severe bending conditions (radius ? 1 mm) and a large number of repetitive bending cycles (?1,000). The devices also remain reliable in various bending configurations, including twisted and helical structures. PMID:22659606

Park, Sungjun; Wang, Gunuk; Cho, Byungjin; Kim, Yonghun; Song, Sunghoon; Ji, Yongsung; Yoon, Myung-Han; Lee, Takhee

2012-07-01

350

Electromechanical Devices. Energy Technology Series.  

ERIC Educational Resources Information Center

This course in electromechanical devices is one of 16 courses in the Energy Technology Series developed for an Energy Conservation-and-Use Technology curriculum. Intended for use in two-year postsecondary institutions to prepare technicians for employment, the courses are also useful in industry for updating employees in company-sponsored training…

Center for Occupational Research and Development, Inc., Waco, TX.

351

Device for underwater cryogenic cutting  

SciTech Connect

An underwater cutting or penetrating device includes a source of liquid nitrogen for cooling a workpiece to a cryogenic temperature before impact by an explosively driven member. Attachment by magnet or clamp, and provision for confining the coolant by flexible gasket or boot are described.

Elkins, J.H.

1982-12-27

352

Wavelet library for constrained devices  

Microsoft Academic Search

The wavelet transform is a powerful tool for image and video processing, useful in a range of applications. This paper is concerned with the efficiency of a certain fast-wavelet-transform (FWT) implementation and several wavelet filters, more suitable for constrained devices. Such constraints are typically found on mobile (cell) phones or personal digital assistants (PDA). These constraints can be a combination

Johan Hendrik Ehlers; Sabah A. Jassim

2007-01-01

353

Semiconductor Devices Having Thermal Spacers.  

National Technical Information Service (NTIS)

A high power, high frequency semiconductor device has a plurality of unit cells connected in parallel. The unit cells each having a controlling electrode and first and second controlled electrodes. A thermal spacer divides at least one of the unit cells i...

S. T. Allen, J. W. Milligan

2004-01-01

354

Conducting Polymer Devices for Bioelectronics  

E-print Network

Conducting Polymer Devices for Bioelectronics Dion Khodagholy July 2012 tel-00847415,version1-23Jul materials, while their natural compatibility with mechanically flexible substrates suits the non-planar form factors often required for implants. More importantly, their ability to conduct ions in addition

Paris-Sud XI, Université de

355

Mobile Device Policy & Program Considerations  

E-print Network

their personal devices. However, formulating an enterprise mobility strategy that incorporates BYOD should & productivity. An understanding of end-user needs and customer service requirements will be essential. Organizations will have to consider these major factors in creating their mobility programs and policies: What

Fisher, Kathleen

356

Surface-Micromachined Microfluidic Devices  

DOEpatents

Microfluidic devices are disclosed which can be manufactured using surface-micromachining. These devices utilize an electroosmotic force or an electromagnetic field to generate a flow of a fluid in a microchannel that is lined, at least in part, with silicon nitride. Additional electrodes can be provided within or about the microchannel for separating particular constituents in the fluid during the flow based on charge state or magnetic moment. The fluid can also be pressurized in the channel. The present invention has many different applications including electrokinetic pumping, chemical and biochemical analysis (e.g. based on electrophoresis or chromatography), conducting chemical reactions on a microscopic scale, and forming hydraulic actuators. Microfluidic devices are disclosed which can be manufactured using surface-micromachining. These devices utilize an electroosmotic force or an electromagnetic field to generate a flow of a fluid in a microchannel that is lined, at least in part, with silicon nitride. Additional electrodes can be provided within or about the microchannel for separating particular constituents in the fluid during the flow based on charge state or magnetic moment. The fluid can also be pressurized in the channel. The present invention has many different applications including electrokinetic pumping, chemical and biochemical analysis (e.g. based on electrophoresis or chromatography), conducting chemical reactions on a microscopic scale, and forming hydraulic actuators.

Galambos, Paul C. (Albuquerque, NM); Okandan, Murat (Albuquerque, NM); Montague, Stephen (Albuquerque, NM); Smith, James H. (Redmond, WA); Paul, Phillip H. (Livermore, CA); Krygowski, Thomas W. (Coutlandt Manor, NY); Allen, James J. (Albuquerque, NM); Nichols, Christopher A. (Hauppauge, NY); Jakubczak, II, Jerome F. (Rio Rancho, NM)

2004-09-28

357

High performance thermoelectric nanocomposite device  

SciTech Connect

A thermoelectric device includes a nanocomposite material with nanowires of at least one thermoelectric material having a predetermined figure of merit, the nanowires being formed in a porous substrate having a low thermal conductivity and having an average pore diameter ranging from about 4 nm to about 300 nm.

Yang, Jihui (Lakeshore, CA); Snyder, Dexter D. (Birmingham, MI)

2011-10-25

358

Portable vacuum object handling device  

DOEpatents

The disclosure relates to a portable device adapted to handle objects which are not to be touched by hand. A piston and bore wall form a vacuum chamber communicating with an adaptor sealably engageable with an object to be lifted. The piston is manually moved and set to establish vacuum. A valve is manually actuatable to apply the vacuum to lift the object.

Anderson, Gordon H. (Los Alamos, NM)

1983-08-09

359

Mobile Devices in the Classroom  

ERIC Educational Resources Information Center

As cell phones--with ever-expanding possibilities of texting, Web browsing, and game playing--have multiplied in recent years among teenagers and even preteens, so have the concerns of teachers and administrators about the distractions these devices can cause. A survey of students and parents earlier this year by the group Common Sense Media found…

Schachter, Ron

2009-01-01

360

Innovative devices in biomedical electronics  

Microsoft Academic Search

In this paper we present our principal projects in biomedical electronics, especially applied to telemedicine. The designed systems are characterized by originality and by plainness of use, as they planned with a very high level of automation (so called ldquointelligentrdquo devices).

Alessandro Convertino; Agostino Giorgio; Savino Giusto; Roberto Marani; A. G. Perri

2008-01-01

361

In situ biofilm coupon device  

DOEpatents

An apparatus for characterization of in-situ microbial biofilm populations in subsurface groundwater. The device permits biofilm-forming microorganisms to adhere to packing material while emplaced in a groundwater strata, so that the packing material can be later analyzed for quantity and type of microorganisms, growth rate, and nutrient requirements.

Peyton, Brent M. (Kennewick, WA); Truex, Michael J. (Richland, WA)

1997-01-01

362

Energy conversion using thermoacoustic devices  

Microsoft Academic Search

Thermoacoustic engines offer the possibility for simple and efficient energy conversion devices. They can be prime movers where heat produces sound or heat pumps and refrigerators where sound pumps heat. An important element in such engines is the secondary thermodynamic medium, the stack which provide the phasing between heat transfer and pressure changes at acoustical frequencies. Other elements are a

O. G. Symko

1999-01-01

363

Native Language Literacy Screening Device.  

ERIC Educational Resources Information Center

The purpose the Native Language Literacy Screening Device (NLLSD) is to give English for Speakers of Other Languages (ESOL) practitioners a sense of the native language literacy levels of learners coming into their programs. This is worth knowing because when learners have had limited schooling in their first language instructional strategies used…

Hudson River Center for Program Development, Glenmont, NY.

364

Organic Memory Device Fabricated Through Solution Processing  

Microsoft Academic Search

Novel organic memory devices including nonvolatile and write-once-read-many-times memory devices are reported. These devices were fabricated through a simple solution processing technique. Programmable electrical bistability was observed on a device made from a polymer film containing metal nanoparticles capped with saturated alkanethiol and small conjugated organic compounds sandwiched between two metal electrodes. The pristine device, which was in a low-conductivity

Jianyong Ouyang; Chih-Wei Chu; Ricky Jia-Hung Tseng; ANKITA PRAKASH; Yang Yang

2005-01-01

365

Encapsulation methods for organic electrical devices  

DOEpatents

The disclosure provides methods and materials suitable for use as encapsulation barriers in electronic devices. In one embodiment, for example, there is provided an electroluminescent device or other electronic device encapsulated by alternating layers of a silicon-containing bonding material and a ceramic material. The encapsulation methods provide, for example, electronic devices with increased stability and shelf-life. The invention is useful, for example, in the field of microelectronic devices.

Blum, Yigal D.; Chu, William Siu-Keung; MacQueen, David Brent; Shi, Yijian

2013-06-18

366

Device-independent randomness amplification with a single device  

NASA Astrophysics Data System (ADS)

Expansion and amplification of weak randomness with untrusted quantum devices has recently become a very fruitful topic of research. Here we contribute with a procedure for amplifying a single weak random source using tri-partite GHZ-type entangled states. If the quality of the source reaches a fixed threshold R=log2?(10), perfect random bits can be produced. This technique can be used to extract randomness from sources that can't be extracted neither classically, nor by existing procedures developed for Santha-Vazirani sources. Our protocol works with a single fault-free device decomposable into three non-communicating parts, that is repeatedly reused throughout the amplification process.

Plesch, Martin; Pivoluska, Matej

2014-08-01

367

Measurement of bidirectional optical properties of complex shading devices  

SciTech Connect

A new method of predicting the solar heat gain through complex fenestration systems involving nonspecular layers such as shades or blinds has been examined in a project jointly sponsored by ASHRAE and DOE. In this method, a scanning radiometer is used to measure the bidirectional radiative transmittance and reflectance of each layer of a fenestration system. The properties of systems containing these layers are then built up computationally from the measured layer properties using a transmission/multiple-reflection calculation. The calculation produces the total directional-hemispherical transmittance of the fenestration system and the layer-by-layer absorptances. These properties are in turn combined with layer-specific measurements of the inward-flowing fractions of absorbed solar energy to produce the overall solar heat gain coefficient. This paper describes the method of measuring the spatially averaged bidirectional optical properties using an automated, large-sample gonioradiometer/photometer, termed a ``Scanning Radiometer.`` Property measurements are presented for one of the most optically complex systems in common use, a venetian blind. These measurements will form the basis for optical system calculations used to test the method of determining performance.

Klems, J.H.; Warner, J.L.

1995-01-01

368

Integrated optical devices for telecommunications  

NASA Astrophysics Data System (ADS)

Integrated optical devices have received a lot of interest in recent years. With electronic devices becoming smaller and smaller, semiconductor industries are facing significantly difficult problems. Photonic devices have unique characteristics which can avoid problems in electronic devices and they can achieve better performance. However, the development of integrated optical devices is needed to realize integrated optical circuits in the future. In this thesis, three aspects of integrated optical devices were studied for telecommunication applications. First, integrated isolators were fabricated. Dry etching and wet etching recipes have been developed for the well-known isolator material, yttrium iron garnet (Y3Fe5O 12), and ridge waveguides were patterned into YIG with different configurations. Integrated polarizers based on 2-D YIG photonic crystals (PCs) were also fabricated using a Focused Ion Beam (FIB). Second, an inexpensive method to fabricate 2-D PCs was developed using anodized aluminum oxide (AAO) as an etch mask. An approach to grow nanopores on top of various films/substrates was found. This approach involved growing aluminum films directly onto the substrate of choice, and then anodizing the film electrochemically. The next step was to use reactive ion etching (RIE) to transfer the newly obtained AAO pattern to the underlying films/substrates, and so make PCs, for example in ordered porous Si. The third project was to simulate 1-D and 2-D tunable electro-optic filters for telecommunications. Interfering thin-film structures were studied with Pb(Mg1/3Nb1/3)O3-PbTiO3(PMN-PT) as a 1-D tunable electro-optic layer. Design rules were developed and the performance of these filters was compared with the requirements in dense wavelength division multiplexing (DWDM). 2-D tunable electro-optic filters were also designed based on 2-D photonic crystals and Fabry-Perot structures. The design flow was demonstrated and some results were elaborated. These three projects have brought together various areas of integrated photonics which helped to expand the choices of future photonic engineers.

Qi, Xiaoyuan

369

Conduit purging device and method  

NASA Technical Reports Server (NTRS)

A device for purging gas comprises a conduit assembly defining an interior volume. The conduit assembly comprises a first conduit portion having an open first end and an open second end and a second conduit portion having an open first end and a closed second end. The open second end of the first conduit portion is disposed proximate to the open first end of the second conduit portion to define a weld region. The device further comprises a supply element supplying a gas to the interior volume at a substantially constant rate and a vent element venting the gas from the interior volume at a rate that maintains the gas in the interior volume within a pressure range suitable to hold a weld bead in the weld region in equilibrium during formation of a weld to join the first conduit portion and the second conduit portion.

Wilks, Michael T. (Inventor)

2011-01-01

370

Sonic crystal acoustic switch device.  

PubMed

This study reports a wave-controlled sonic crystal switch device that exhibits a destructive interference-based wave to wave reverse switching effect. By applying control waves, this acoustic device, composed of a two-dimensional square lattice sonic crystal block, reduces acoustic wave transmission from input to output. The finite difference time domain simulation and experimental results confirm the wave-to-wave reverse switching effect at the peak frequencies of the second band. The proposed sonic crystal switch prototype provides a contrast rate of 86% at 11.3 kHz frequency. This wave-to-wave switching effect is useful for controlling wave propagation for smart structure applications. PMID:23742444

Alagoz, Serkan; Alagoz, Baris Baykant

2013-06-01

371

Extraglottic airway devices: A review  

PubMed Central

Extraglottic airway devices (EAD) have become an integral part of anesthetic care since their introduction into clinical practice 25 years ago and have been used safely hundreds of millions of times, worldwide. They are an important first option for difficult ventilation during both in-hospital and out-of-hospital difficult airway management and can be utilized as a conduit for tracheal intubation either blindly or assisted by another technology (fiberoptic endoscopy, lightwand). Thus, the EAD may be the most versatile single airway technique in the airway management toolbox. However, despite their utility, knowledge regarding specific devices and the supporting data for their use is of paramount importance to patient's safety. In this review, number of commercially available EADs are discussed and the reported benefits and potential pitfalls are highlighted. PMID:24741502

Ramaiah, Ramesh; Das, Debasmita; Bhananker, Sanjay M; Joffe, Aaron M

2014-01-01

372

Energy Transfer in molecular devices  

E-print Network

Protein machines often exhibit long range interplay between different sites in order to achieve their biological tasks. We investigate and characterize the non--linear energy localization and the basic mechanisms of energy transfer in protein devices. By studying two different model protein machines, with different biological functions, we show that genuinely non--linear phenomena are responsible for energy transport between the different machine sites involved in the biological functions. The energy transfer turns out to be extremely efficient from an energetic point of view: by changing the energy initially provided to the model device, we identify a well defined range of energies where the time for the energy transport to occur is minimal and the amount of transferred energy is maximum. Furthermore, by introducing an implicit solvent, we show that the energy is localized on the internal residues of the protein structure, thus minimizing the dissipation.

Caraglio, M

2014-01-01

373

Variable ratio regenerative braking device  

DOEpatents

Disclosed is a regenerative braking device (10) for an automotive vehicle. The device includes an energy storage assembly (12) having a plurality of rubber rollers (26, 28) mounted for rotation between an input shaft (36) and an output shaft (42), clutches (38, 46) and brakes (40, 48) associated with each shaft, and a continuously variable transmission (22) connectable to a vehicle drivetrain and to the input and output shafts by the respective clutches. The rubber rollers are torsionally stressed to accumulate energy from the vehicle when the input shaft is clutched to the transmission while the brake on the output shaft is applied, and are torsionally relaxed to deliver energy to the vehicle when the output shaft is clutched to the transmission while the brake on the input shaft is applied. The transmission ratio is varied to control the rate of energy accumulation and delivery for a given rotational speed of the vehicle drivetrain.

Hoppie, Lyle O. (Birmingham, MI)

1981-12-15

374

Sensing device with whisker elements  

NASA Technical Reports Server (NTRS)

A sensing device includes an elongated whisker element having a flexible cantilever region and a base region where a change in moment or curvature is generated by bending of the cantilever region when it contacts an object. One or more sensor elements cooperatively associated with the whisker element provide one or more output signals that is/are representative of two orthogonal components of change in moment or curvature at the whisker base region to permit determination of object distance, fluid velocity profile, or object contour (shape) with accounting for lateral slip of the whisker element and frictional characteristics of the object. Multiple sensing devices can be arranged in arrays in a manner to sense object contour without or with adjustment for lateral slip.

Hartmann, Mitra J. (Inventor); Solomon, Joseph H. (Inventor)

2010-01-01

375

Insertion device calculations with mathematica  

SciTech Connect

The design of accelerator insertion devices such as wigglers and undulators has usually been aided by numerical modeling on digital computers, using code in high level languages like Fortran. In the present era, there are higher level programming environments like IDL{reg_sign}, MatLab{reg_sign}, and Mathematica{reg_sign} in which these calculations may be performed by writing much less code, and in which standard mathematical techniques are very easily used. The authors present a suite of standard insertion device modeling routines in Mathematica to illustrate the new techniques. These routines include a simple way to generate magnetic fields using blocks of CSEM materials, trajectory solutions from the Lorentz force equations for given magnetic fields, Bessel function calculations of radiation for wigglers and undulators and general radiation calculations for undulators.

Carr, R. [Stanford Synchrotron Radiation Lab., CA (United States); Lidia, S. [Univ. of California, Davis, CA (United States)

1995-02-01

376

Electroactive polymer actuator devices (EAPAD)  

NASA Astrophysics Data System (ADS)

Designing and building devices that utilize electroactive polymer actuators brings into sharp focus the performance required of these materials. Using the example of a "rehabilitation glove", it is shown that the performance of polypyrrole actuators fall short of that required. In particular, the need to simultaneously produce 5% actuator strain at a 5 MPa isotonic stress cannot be achieved with the actuators investigated in our laboratories to date. However, significant improvements in the performance under load have been achieved with the use of ionic liquid electrolytes. The use of new materials such as composites of conducting polymers and carbon nanotubes offers the possibility of further improvements in actuator performance. Finally, redesigning the glove actuator offers a compromise solution that allows existing actuators to be used in a prototype device.

Spinks, Geoffrey M.; Wallace, Gordon G.; Ding, Jie; Zhou, Dezhi; Xi, Binbin; Scott, Timothy R.; Truong, Van-Tan

2003-07-01

377

RFQ device for accelerating particles  

DOEpatents

A superconducting radio frequency quadrupole (RFQ) device includes four spaced elongated, linear, tubular rods disposed parallel to a charged particle beam axis, with each rod supported by two spaced tubular posts oriented radially with respect to the beam axis. The rod and post geometry of the device has four-fold rotation symmetry, lowers the frequency of the quadrupole mode below that of the dipole mode, and provides large dipole-quadrupole mode isolation to accommodate a range of mechanical tolerances. The simplicity of the geometry of the structure, which can be formed by joining eight simple T-sections, provides a high degree of mechanical stability, is insensitive to mechanical displacement, and is particularly adapted for fabrication with superconducting materials such as niobium.

Shepard, Kenneth W. (Park Ridge, IL); Delayen, Jean R. (Naperville, IL)

1995-01-01

378

Graphene Superconducting Quantum Interference Device  

NASA Astrophysics Data System (ADS)

Graphene can support Cooper pair transport when contacted with two superconducting electrodes, resulting in the well-known Josephson effect. By depositing aluminum/palladium electrodes in the geometry of a loop onto a single graphene sheet, we fabricate a two junction dc superconducting quantum interference device (SQUID). Not only an the supercurrent in this device be increased by moving the electrostatic gate away from the Dirac point, but it can also be modulated periodically by an applied magnetic field---a potentially powerful probe of electronic transport in graphene. We analyze the magnetic field modulation of the critical current with the asymmetric/inductive SQUID model of Fulton and Dynes and discuss the variation of the fitting parameters with gate voltage.

Girit, Ça?lar; Bouchiat, Vincent; Naaman, Ofer; Zhang, Yuanbo; Crommie, Michael; Zettl, Alex; Siddiqi, Irfan

2010-03-01

379

Microwave Photonic Devices and Systems  

Microsoft Academic Search

In this paper, we review our recent work on novel high-speed photonic InP components and their application in millimeter-wave (mm-wave) fiber-wireless systems. In detail, the paper is concerned with ultra broadband travelling-wave photomixers and photodetectors, high-speed waveguide modulators, as well as novel electroabsorption transceiver elements. Besides the basic device concepts and properties, the employment of the high-speed photonic components in

D. Jäger; R. Heinzelmann; A. Stöhr; D. Jaeger

380

Microfluidic Devices and Flow Rate  

NSDL National Science Digital Library

Students obtain a basic understanding of microfluidic devices, how they are developed and their uses in the medical field. After conducting the associated activity, they watch a video clip and learn about flow rate and how this relates to the speed at which medicine takes effect in the body. What they learn contributes to their ongoing objective to answer the challenge question presented in lesson 1 of this unit. They conclude by solving flow rate problems provided on a worksheet.

Vu Bioengineering Ret Program

381

Radio frequency coaxial feedthrough device  

DOEpatents

A radio frequency coaxial vacuum feedthrough is provided which utilizes a cylindrical ceramic vacuum break formed of an alumina ceramic. The cylinder is coaxially disposed and brazed between tapered coaxial conductors to form a vacuum sealed connection between a pressurized upstream coaxial transmission line and a utilization device located within a vacuum container. The feedthrough provides 50 ohm matched impedance RF feedthrough up to about 500 MHz at power levels in the multimegawatt range.

Owens, Thomas L. (Kingston, TN); Baity, Frederick W. (Oak Ridge, TN); Hoffman, Daniel J. (Oak Ridge, TN); Whealton, John H. (Oak Ridge, TN)

1987-01-01

382

PLATO: An Automatic Teaching Device  

Microsoft Academic Search

PLATO¿a teaching machine developed during the past nine months at the Coordinated Science Laboratory of the University of Illinois¿is a device for teaching a number of students individually by means of a single, central, high-speed general-purpose digital computer. Each student is provided with his own keyset and television display. The keyset enables the student to control the sequence of materials

D. Bitzer; P. Braunfeld; W. Lichtenberger

1961-01-01

383

Short notes on intrauterine devices.  

PubMed

The DATTA panelists emphasized the critical importance of patient selection when considering IUDs for contraception The IUD is an acceptable method of contraceptives, in a stable monogamous relationship, and not at risk for sexually transmittel diseases. Within these constraints, the panelists gave overwhelming support to the IUD as a safe and effective method of contraception. The minority opinion (two panelists) that these devices were not established for safety or effectiveness was based on concerns over possible infectious complications. PMID:2397950

1990-05-01

384

Hydrogen storage and supply device  

Microsoft Academic Search

A hydrogen storage and supply device in which a pressure vessel contains a hydride of the gross formula AB\\/sub n\\/H\\/sub m\\/, in which a is calcium or one or more of the rare earth metals with or without thorium, zirconium, or hafnium, B is nickel and\\/or cobalt, with or without iron and\\/or copper, n has a value between about 3

H. A. Bruning; J. H. N. van Vucht; F. F. Westendorp; H. Zijlstra

1983-01-01

385

Spectral utilization in thermophotovoltaic devices  

Microsoft Academic Search

Multilayer assemblies of epitaxially-grown, III-V semiconductor materials are being investigated for use in thermophotovoltaic (TPV) energy conversion applications. It has been observed that thick, highly-doped semiconductor layers within cell architectures dominate the parasitic free-carrier absorption (FCA) of devices at wavelengths above the bandgap of the semiconductor material. In this work, the wavelength-dependent, free-carrier absorption of p- and n-type InGaAs layers

M. B. Clevenger; C. S. Murray

1997-01-01

386

Encapsulant materials and associated devices  

DOEpatents

Compositions suitable for use as encapsulants are described. The inventive compositions include a high molecular weight polymeric material, a curing agent, an inorganic compound, and a coupling agent. Optional elements include adhesion promoting agents, colorants, antioxidants, and UV absorbers. The compositions have desirable diffusivity properties, making them suitable for use in devices in which a substantial blocking of moisture ingress is desired, such as photovoltaic (PV) modules.

Kempe, Michael D (Littleton, CO); Thapa, Prem (Lima, OH)

2011-03-08

387

Video Browsing on Handheld Devices  

NASA Astrophysics Data System (ADS)

Recent improvements in processing power, storage space, and video codec development enable users now to playback video on their handheld devices in a reasonable quality. However, given the form factor restrictions of such a mobile device, screen size still remains a natural limit and - as the term "handheld" implies - always will be a critical resource. This is not only true for video but any data that is processed on such devices. For this reason, developers have come up with new and innovative ways to deal with large documents in such limited scenarios. For example, if you look at the iPhone, innovative techniques such as flicking have been introduced to skim large lists of text (e.g. hundreds of entries in your music collection). Automatically adapting the zoom level to, for example, the width of table cells when double tapping on the screen enables reasonable browsing of web pages that have originally been designed for large, desktop PC sized screens. A multi touch interface allows you to easily zoom in and out of large text documents and images using two fingers. In the next section, we will illustrate that advanced techniques to browse large video files have been developed in the past years, as well. However, if you look at state-of-the-art video players on mobile devices, normally just simple, VCR like controls are supported (at least at the time of this writing) that only allow users to just start, stop, and pause video playback. If supported at all, browsing and navigation functionality is often restricted to simple skipping of chapters via two single buttons for backward and forward navigation and a small and thus not very sensitive timeline slider.

Hürst, Wolfgang

388

Portable vacuum object handling device  

DOEpatents

The disclosure relates to a portable device adapted to handle objects which are not to be touched by hand. A piston and bore wall form a vacuum chamber communicating with an adaptor sealably engageable with an object to be lifted. The piston is manually moved and set to establish vacuum. A valve is manually actuatable to apply the vacuum to lift the object. 1 fig.

Anderson, G.H.

1983-08-09

389

A rotating electrical transfer device  

NASA Technical Reports Server (NTRS)

The design, development, and performance characteristics of two roll ring configurations - a roll ring being a device used in transferring electrical energy across a continuously rotating or oscillating interface through one or more flexible rolling contacts, or flexures are described. Emphasis is placed on the design problems and solutions encountered during development in the areas of flexure fatigue, contact electroplating, electrical noise, and control of interface geometry. Also, the present status of each configuration is summarized.

Porter, R. S.

1985-01-01

390

Ion plated electronic tube device  

DOEpatents

An electronic tube and associated circuitry which is produced by ion plating techniques. The process is carried out in an automated process whereby both active and passive devices are produced at very low cost. The circuitry is extremely reliable and is capable of functioning in both high radiation and high temperature environments. The size of the electronic tubes produced are more than an order of magnitude smaller than conventional electronic tubes.

Meek, T.T.

1983-10-18

391

Encapsulant materials and associated devices  

DOEpatents

Compositions suitable for use as encapsulants are described. The inventive compositions include a high molecular weight polymeric material, a curing agent, an inorganic compound, and a coupling agent. Optional elements include adhesion promoting agents, colorants, antioxidants, and UV absorbers. The compositions have desirable diffusivity properties, making them suitable for use in devices in which a substantial blocking of moisture ingress is desired, such as photovoltaic (PV) modules.

Kempe, Michael D (Littleton, CO); Thapa, Prem (Lima, OH)

2012-05-22

392

Graphene field-effect devices  

Microsoft Academic Search

.   In this article, graphene is investigated with respect to its electronic properties when introduced into field effect devices\\u000a (FED). With the exception of manual graphene deposition, conventional top-down CMOS-compatible\\u000a processes are applied. Few and monolayer graphene sheets are\\u000a characterized by scanning electron microscopy, atomic force\\u000a microscopy and Raman spectroscopy. The electrical properties of\\u000a monolayer graphene sandwiched between two silicon

T. J. Echtermeyer; M. C. Lemme; J. Bolten; M. Baus; M. Ramsteiner; H. Kurz

2007-01-01

393

78 FR 60291 - Investigational Device Exemptions for Early Feasibility Medical Device Clinical Studies...  

Federal Register 2010, 2011, 2012, 2013

...Exemptions for Early Feasibility Medical Device Clinical Studies, Including Certain First...facilitate early feasibility studies of medical devices, using appropriate...practices for investigational medical device studies. Concurrent with the...

2013-10-01

394

75 FR 14170 - Medical Device Epidemiology Network: Developing Partnership Between the Center for Devices and...  

Federal Register 2010, 2011, 2012, 2013

...the methodology of studies for medical device performance...the performance of medical devices (including...comparative effectiveness studies). The centers participating...with an interest in medical device outcome and epidemiologic study methodology....

2010-03-24

395

77 FR 36951 - Gastroenterology-Urology Devices; Reclassification of Implanted Blood Access Devices  

Federal Register 2010, 2011, 2012, 2013

...FDA-2012-N-0303] Gastroenterology-Urology Devices; Reclassification of Implanted...January 23, 1981), the Gastroenterology-Urology Devices Panel recommended that both...follows: PART 876--GASTROENTEROLOGY--UROLOGY DEVICES 1. The authority citation...

2012-06-20

396

78 FR 38867 - Gastroenterology-Urology Devices; Reclassification of Implanted Blood Access Devices  

Federal Register 2010, 2011, 2012, 2013

...FDA-2012-N-0303] Gastroenterology-Urology Devices; Reclassification of Implanted...January 23, 1981), the Gastroenterology-Urology Devices Panel recommended that both implanted...follows: PART 876--GASTROENTEROLOGY-UROLOGY DEVICES 0 1. The authority citation...

2013-06-28

397

75 FR 70112 - Medical Devices; General and Plastic Surgery Devices; Classification of Non-Powered Suction...  

Federal Register 2010, 2011, 2012, 2013

...Medical Devices; General and Plastic Surgery Devices; Classification of Non-Powered...rulemaking? The Federal Food, Drug, and Cosmetic Act (FD&C Act) (21 U.S.C...PART 878--GENERAL AND PLASTIC SURGERY DEVICES 0 1. The authority...

2010-11-17

398

76 FR 6551 - Medical Devices; General and Plastic Surgery Devices; Classification of Contact Cooling System...  

Federal Register 2010, 2011, 2012, 2013

...Medical Devices; General and Plastic Surgery Devices; Classification of Contact...rulemaking? The Federal Food, Drug, and Cosmetic Act (the FD&C Act) (21 U.S...PART 878--GENERAL AND PLASTIC SURGERY DEVICES 0 1. The authority...

2011-02-07

399

76 FR 43119 - Medical Devices; General and Plastic Surgery Devices; Classification of the Focused Ultrasound...  

Federal Register 2010, 2011, 2012, 2013

...Medical Devices; General and Plastic Surgery Devices; Classification of the Focused...of the Federal Food, Drug, and Cosmetic Act (the FD&C Act) (21 U.S...PART 878--GENERAL AND PLASTIC SURGERY DEVICES 0 1. The authority...

2011-07-20

400

76 FR 20840 - Medical Devices; General and Plastic Surgery Devices; Classification of the Low Level Laser...  

Federal Register 2010, 2011, 2012, 2013

...Medical Devices; General and Plastic Surgery Devices; Classification of the Low...of the Federal Food, Drug, and Cosmetic Act (the FD&C Act) (21 U.S...PART 878--GENERAL AND PLASTIC SURGERY DEVICES 0 1. The authority...

2011-04-14

401

78 FR 68853 - International Medical Device Regulators Forum; Medical Device Single Audit Program International...  

Federal Register 2010, 2011, 2012, 2013

...Docket No. FDA-2013-N-1306] International Medical Device Regulators Forum; Medical Device Single Audit Program International Coalition...Administration (FDA) is announcing participation in the Medical Device Single Audit Program International...

2013-11-15

402

77 FR 9610 - Gastroenterology-Urology Devices; Reclassification of Sorbent Hemoperfusion Devices for the...  

Federal Register 2010, 2011, 2012, 2013

...Platelet loss and thrombocytopenia--The adsorption characteristics of the device may cause...substances. and drugs (e.g., adsorption of glucose, unspecific removal characteristics...device's lack of specificity--The adsorption characteristics of the device may...

2012-02-17

403

21 CFR 870.4075 - Endomyocardial biopsy device.  

Code of Federal Regulations, 2010 CFR

...2010-04-01 false Endomyocardial biopsy device. 870.4075 Section 870.4075...Devices § 870.4075 Endomyocardial biopsy device. (a) Identification. An endomyocardial biopsy device is a device used in a...

2010-04-01

404

21 CFR 892.1670 - Spot-film device.  

Code of Federal Regulations, 2013 CFR

... Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES RADIOLOGY DEVICES Diagnostic Devices § 892.1670 Spot-film device. (a) Identification. A spot-film device...

2013-04-01

405

21 CFR 892.1670 - Spot-film device.  

Code of Federal Regulations, 2012 CFR

... Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES RADIOLOGY DEVICES Diagnostic Devices § 892.1670 Spot-film device. (a) Identification. A spot-film device...

2012-04-01

406

21 CFR 892.1670 - Spot-film device.  

Code of Federal Regulations, 2011 CFR

... Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES RADIOLOGY DEVICES Diagnostic Devices § 892.1670 Spot-film device. (a) Identification. A spot-film device...

2011-04-01

407

21 CFR 892.1670 - Spot-film device.  

... Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES RADIOLOGY DEVICES Diagnostic Devices § 892.1670 Spot-film device. (a) Identification. A spot-film device...

2014-04-01

408

21 CFR 864.6160 - Manual blood cell counting device.  

Code of Federal Regulations, 2010 CFR

... 2010-04-01 false Manual blood cell counting device. 864.6160 Section...Hematology Devices § 864.6160 Manual blood cell counting device. (a) Identification. A manual blood cell counting device is a device used to...

2010-04-01

409

21 CFR 872.6010 - Abrasive device and accessories.  

Code of Federal Regulations, 2010 CFR

...2010-04-01 2010-04-01 false Abrasive device and accessories. 872.6010...Miscellaneous Devices § 872.6010 Abrasive device and accessories. (a) Identification. An abrasive device and accessories is a device...

2010-04-01

410

21 CFR 886.4360 - Ocular surgery irrigation device.  

...2014-04-01 false Ocular surgery irrigation device. 886.4360 Section 886...Devices § 886.4360 Ocular surgery irrigation device. (a) Identification. An ocular surgery irrigation device is a device intended to...

2014-04-01

411

21 CFR 886.4360 - Ocular surgery irrigation device.  

Code of Federal Regulations, 2012 CFR

...2012-04-01 false Ocular surgery irrigation device. 886.4360 Section 886...Devices § 886.4360 Ocular surgery irrigation device. (a) Identification. An ocular surgery irrigation device is a device intended to...

2012-04-01

412

21 CFR 886.4360 - Ocular surgery irrigation device.  

Code of Federal Regulations, 2011 CFR

...2011-04-01 false Ocular surgery irrigation device. 886.4360 Section 886...Devices § 886.4360 Ocular surgery irrigation device. (a) Identification. An ocular surgery irrigation device is a device intended to...

2011-04-01

413

21 CFR 886.4360 - Ocular surgery irrigation device.  

Code of Federal Regulations, 2013 CFR

...2013-04-01 false Ocular surgery irrigation device. 886.4360 Section 886...Devices § 886.4360 Ocular surgery irrigation device. (a) Identification. An ocular surgery irrigation device is a device intended to...

2013-04-01

414

High-frequency nanophotonic devices  

NASA Astrophysics Data System (ADS)

Recent results on GaAs-based high-speed mode-locked quantum dot (QD) lasers and optical amplifiers with an operation wavelength centered at 1290 nm are reviewed and their complex dependence on device and operating parameters is discussed on the basis of experimental data obtained with integrated fiber-based QD device modules. Hybrid and passive mode-locking of QD lasers with repetition frequencies between 5 and 80 GHz, sub-ps pulse widths, ultra-low timing jitter down to 190 fs, high output peak power beyond 1 W and suppression of Q-switching are reported, showing the large potential of this class of devices for O-band optical fiber applications. Results on cw and dynamical characterization of quantum dot semiconductor optical amplifiers are presented. QD amplifiers exhibit a close-to-ideal noise figure of 4 dB and demonstrate multi-wavelength amplification of three CWDM wavelengths simultaneously. Modelling of QD polarization dependence shows that it should be possible to achieve polarization insensitive SOAs using vertically coupled QD stacks. Amplification of ultra-fast 80 GHz optical combs and bit-error-free data signal amplification at 40 Gb/s with QD SOAs show the potential for their application in future 100 Gb Ethernet networks.

Bimberg, D.; Fiol, G.; Meuer, C.; Laemmlin, M.; Kuntz, M.

2007-02-01

415

Infrared emitting device and method  

DOEpatents

An infrared emitting device and method. The infrared emitting device comprises a III-V compound semiconductor substrate upon which are grown a quantum-well active region having a plurality of quantum-well layers formed of a ternary alloy comprising InAsSb sandwiched between barrier layers formed of a ternary alloy having a smaller lattice constant and a larger energy bandgap than the quantum-well layers. The quantum-well layers are preferably compressively strained to increase the threshold energy for Auger recombination; and a method is provided for determining the preferred thickness for the quantum-well layers. Embodiments of the present invention are described having at least one cladding layer to increase the optical and carrier confinement in the active region, and to provide for waveguiding of the light generated within the active region. Examples have been set forth showing embodiments of the present invention as surface- and edge-emitting light emitting diodes (LEDs), an optically-pumped semiconductor laser, and an electrically-injected semiconductor diode laser. The light emission from each of the infrared emitting devices of the present invention is in the midwave infrared region of the spectrum from about 2 to 6 microns.

Kurtz, Steven R. (Albuquerque, NM); Biefeld, Robert M. (Albuquerque, NM); Dawson, L. Ralph (Albuquerque, NM); Howard, Arnold J. (Albuquerque, NM); Baucom, Kevin C. (Albuquerque, NM)

1997-01-01

416

Numerical Modeling of Nanoelectronic Devices  

NASA Technical Reports Server (NTRS)

Nanoelectronic Modeling 3-D (NEMO 3-D) is a computer program for numerical modeling of the electronic structure properties of a semiconductor device that is embodied in a crystal containing as many as 16 million atoms in an arbitrary configuration and that has overall dimensions of the order of tens of nanometers. The underlying mathematical model represents the quantummechanical behavior of the device resolved to the atomistic level of granularity. The system of electrons in the device is represented by a sparse Hamiltonian matrix that contains hundreds of millions of terms. NEMO 3-D solves the matrix equation on a Beowulf-class cluster computer, by use of a parallel-processing matrix vector multiplication algorithm coupled to a Lanczos and/or Rayleigh-Ritz algorithm that solves for eigenvalues. In a recent update of NEMO 3-D, a new strain treatment, parameterized for bulk material properties of GaAs and InAs, was developed for two tight-binding submodels. The utility of the NEMO 3-D was demonstrated in an atomistic analysis of the effects of disorder in alloys and, in particular, in bulk In(x)Ga(l-x)As and in In0.6Ga0.4As quantum dots.

Klimeck, Gerhard; Oyafuso, Fabiano; Bowen, R. Chris; Boykin, Timothy

2003-01-01

417

Cotton-based Diagnostic Devices.  

PubMed

A good diagnostic procedure avoids wasting medical resources, is easy to use, resists contamination, and provides accurate information quickly to allow for rapid follow-up therapies. We developed a novel diagnostic procedure using a "cotton-based diagnostic device" capable of real-time detection, i.e., in vitro diagnostics (IVD), which avoids reagent contamination problems common to existing biomedical devices and achieves the abovementioned goals of economy, efficiency, ease of use, and speed. Our research reinforces the advantages of an easy-to-use, highly accurate diagnostic device created from an inexpensive and readily available U.S. FDA-approved material (i.e., cotton as flow channel and chromatography paper as reaction zone) that adopts a standard calibration curve method in a buffer system (i.e., nitrite, BSA, urobilinogen and uric acid assays) to accurately obtain semi-quantitative information and limit the cross-contamination common to multiple-use tools. Our system, which specifically targets urinalysis diagnostics and employs a multiple biomarker approach, requires no electricity, no professional training, and is exceptionally portable for use in remote or home settings. This could be particularly useful in less industrialized areas. PMID:25393975

Lin, Shang-Chi; Hsu, Min-Yen; Kuan, Chen-Meng; Wang, Hsi-Kai; Chang, Chia-Ling; Tseng, Fan-Gang; Cheng, Chao-Min

2014-01-01

418

Editorial: Photovoltaic Materials and Devices  

SciTech Connect

As the global energy needs grow, there is increasing interest in the generation of electricity by photovoltaics (PVs) devices or solar cells - devices that convert sunlight to electricity. Solar industry has seen an enormous growth during the last decade. The sale of PV modules has exceeded 27 GW in 2011, with significant contributions to the market share from all technologies. While the silicon technology continues to have the dominant share, the other thin film technologies (CdTe, CIGS, a-Si, and organic PV) are experiencing fast growth. Increased production of silicon modules has led to a very rapid reduction in their price and remains as benchmark for other technologies. The PV industry is in full gear to commercialize new automated equipment for solar cell and module production, instrumentation for process monitoring technologies, and for implementation of other cost-reduction approaches, and extensive research continues to be carried out in many laboratories to improve the efficiency of solar cells and modules without increasing the production costs. A large variety of solar cells, which differ in the material systems used, design, PV structure, and even the principle of PV conversion, are designed to date. This special issue contains peer-reviewed papers in the recent developments in research related to broad spectrum of photovoltaic materials and devices. It contains papers on many aspects of solar cells-the growth and deposition, characterization, and new material development.

Sopori, B.; Tan, T.; Rupnowski, P.

2012-01-01

419

A magnetorheological fluid locking device  

NASA Astrophysics Data System (ADS)

A magnetorheological fluid (MRF) device is designed to provide a static locking force caused by the operation of a controllable MRF valve. The intent is to introduce an MRF device which provides the locking force of a fifth wheel coupler while maintaining the "powerless" locking capability when required. A passive magnetic field supplied by a permanent magnet provides a powerless locking resistance force. The passively closed MRF valve provides sufficient reaction force to eliminate axial displacement to a pre-defined force value. Unlocking of the device is provided by means of an electromagnet which re-routes the magnetic field distribution along the MR valve, and minimizes the resistance. Three dimensional electromagnetic finite element analyses are performed to optimize the MRF lock valve performance. The MRF locking valve is fabricated and tested for installation on a truck fifth wheel application. An experimental setup, resembling actual working conditions, is designed and tests are conducted on vehicle interface schemes. The powerless-locking capacity and the unlocking process with minimal resistance are experimentally demonstrated.

Kavlicoglu, Barkan; Liu, Yanming

2011-04-01

420

Microencapsulation and Electrostatic Processing Device  

NASA Technical Reports Server (NTRS)

A microencapsulation and electrostatic processing (MEP) device is provided for forming microcapsules. In one embodiment, the device comprises a chamber having a filter which separates a first region in the chamber from a second region in the chamber. An aqueous solution is introduced into the first region through an inlet port, and a hydrocarbon/ polymer solution is introduced into the second region through another inlet port. The filter acts to stabilize the interface and suppress mixing between the two immiscible solutions as they are being introduced into their respective regions. After the solutions have been introduced and have become quiescent, the interface is gently separated from the filter. At this point, spontaneous formation of microcapsules at the interface may begin to occur, or some fluid motion may be provided to induce microcapsule formation. In any case, the fluid shear force at the interface is limited to less than 100 dynes/sq cm. This low-shear approach to microcapsule formation yields microcapsules with good sphericity and desirable size distribution. The MEP device is also capable of downstream processing of microcapsules, including rinsing, re-suspension in tertiary fluids, electrostatic deposition of ancillary coatings, and free-fluid electrophoretic separation of charged microcapsules.

Morrison, Dennis R. (Inventor); Mosier, Benjamin (Inventor); Cassanto, John M. (Inventor)

2001-01-01

421

High frequency carbon nanotube devices  

NASA Astrophysics Data System (ADS)

We investigate high frequency electrical and mechanical performances of carbon nanotube based devices. Using configurations with multiple single-wall nanotubes in parallel, we show that HF nanotube transistors with intrinsic cut-off frequencies as high as 30 GHz can be obtained on rigid substrates. Adapting our process to plastic substrates, we also obtained highly flexible HF transistors showing constant transconductances up to at least 6 GHz, as-measured cut-off frequencies as high as 1 GHz (5-8 GHz after de-embedding) and stable DC performances upon bending. We probed electromechanical properties of individual suspended carbon multiwall nanotubes by using a modified AFM. DC deflection measurements on different devices are in agreement with a continuum model prediction and consistent with a Young's modulus of 0.4 TPa. Preliminary HF measurements on a doubly clamped device showed a resonant frequency of 200MHz consistent with a Young's modulus of 0.43 TPa. This implies that built-in mechanical stress in the case of MWNTs is negligeable.

Goffman, M. F.; Chimot, N.; Mile, E.; Monteverde, M. C.; Bourgoin, J.-P.; Derycke, V.

2008-08-01

422

Design of electrospinning mesh devices  

NASA Astrophysics Data System (ADS)

This paper describes the features of new membranes that can act as local biomedical devices owing to their peculiar shape in the form of mesh structure. These materials are designed to provide significant effects to reduce local inflammations and improve the tissue regeneration. Lamellar Hydrotalcite loaded with Diclofenac Sodium (HTLc-DIK) was homogenously dispersed inside a polymeric matrix of Poly-caprolactone (PCL) to manufacture membranes by electrospinning technique. The experimental procedure and the criteria employed have shown to be extremely effective at increasing potentiality and related applications. The employed technique has proved to be very useful to manufacture polymeric fibers with diameters in the range of nano-micro scale. In this work a dedicated collector based on a proprietary technology of IME Technologies and Eindhoven University of Technology (TU/e) was used. It allowed to obtain devices with a macro shape of a 3D-mesh. Atomic Force Microscopy (AFM) highlights a very interesting texture of the electrospun fibers. They show a lamellar morphology that is only slightly modified by the inclusion of the interclay embedded in the devices to control the drug release phenomena.

Russo, Giuseppina; Peters, Gerrit W. M.; Solberg, Ramon H. M.; Vittoria, Vittoria

2012-07-01

423

Photoconductive nanocomposite polymers and devices  

NASA Astrophysics Data System (ADS)

Photoconductive conjugated polymers have attracted much research interest because of their potential for fabrication of flexible, large area, and low cost optoelectronic devices, such as photodetectors, photoelectrochemical cells, photoelectrochromic windows and displays, photovoltaic cells, and electrophotographic receptors. This research is exploring the synthesis of novel donor/acceptor nanocomposite polymers with enhanced photoconductive properties, characterization of the nanoscale morphology and photoelectronic properties of the bicomponent materials, investigation of their structure-property relationships, and the fabrication and evaluation of devices using the new nanocomposite polymers. A novel molecular self-assembly approach to the synthesis of binary nanocomposites of well-known conjugated polymers and organic semiconductors (e.g. metallophthalocyanine, titanium dioxide) has been developed. The nanoscale morphology of these nanocomposites can be regulated as a function of composition. Some examples of MPc nanocomposites include vanadium oxide phthalocyanine (VOTPPc), metal-free tetraphenoxyphthalocyanine (TPPc), lead phthalocyanine (PbPc), and titanium oxide plithalocyanine (TiOPc) in combination with the acceptor conjugated polymer poly(benzimidazobenzophenanthroline ladder) (BBL). Such a systematic variation of the central metal in MPc has facilitated the observation of various cooperative properties in MPc/BBL nanocomposites, including photo-induced electron transfer, unity quantum yield for charge separation, and substantial enhancement of photoconductivity. Due to the narrow absorption bands and spectral photosensitivity of current photoconductors, two different kinds of photoreceptors are made for commercial applications: visible photoreceptors for copiers and near-IR photoreceptors for diode laser jet printers. Bilayer electrophotographic receptor (EPR) devices fabricated from MPc/polymer nanocomposite thin films as the charge generation layer have excellent performance characteristics. The high photosensitivity, low dark decay, and broad spectra range (300--900 nm) of photosensitivity are very promising for the realization of EPR devices with dual applications in both photocopiers and laser jet printers. Photovoltaic devices of donor/acceptor nanocomposites of poly(p-phenylene vinylene) (PPV) with BBL and other polyquinolines have also been investigated to explore the factors governing polymer photovoltaics. Efficient solar cells were obtained through photoinduced charge separation at polymer-polymer interface and ohmic contact at polymer-metal interface.

Yi, Shujian

424

Release strategies for making transferable semiconductor structures, devices and device components  

DOEpatents

Provided are methods for making a device or device component by providing a multilayer structure having a plurality of functional layers and a plurality of release layers and releasing the functional layers from the multilayer structure by separating one or more of the release layers to generate a plurality of transferable structures. The transferable structures are printed onto a device substrate or device component supported by a device substrate. The methods and systems provide means for making high-quality and low-cost photovoltaic devices, transferable semiconductor structures, (opto-)electronic devices and device components.

Rogers, John A. (Champaign, IL); Nuzzo, Ralph G. (Champaign, IL); Meitl, Matthew (Raleigh, NC); Ko, Heung Cho (Urbana, IL); Yoon, Jongseung (Urbana, IL); Menard, Etienne (Durham, NC); Baca, Alfred J. (Urbana, IL)

2011-04-26

425

NFC SECURITY ON ANDROID DEVICES MATTHEW QUINLAN  

E-print Network

NFC SECURITY ON ANDROID DEVICES by MATTHEW QUINLAN Advisor DR. ELAARAG A senior research [proposal .................................................................................................. 13 4. NFC SECURITY ON ANDROID DEVICES ...................................................... 15 4............................................................................................ 20 5. FUZZING ANDROID'S NFC STACK................................................................ 23

ElAarag, Hala

426

Laser system to detonate explosive devices  

NASA Technical Reports Server (NTRS)

Detonating system is not affected by electromagnetic interference. System includes laser source, Q-switch, and optical fiber connected to explosive device. Fiber can be branched out and connected to several devices for simultaneous detonation.

Menichelli, V. J.; Yang, L. C.

1974-01-01

427

49 CFR 236.739 - Device, acknowledging.  

Code of Federal Regulations, 2010 CFR

...train stop or train control device, an automatic brake application can be forestalled, or by means of which, on a locomotive equipped with an automatic cab signal device, the sounding of the cab indicator can be...

2010-10-01

428

14 CFR 23.687 - Spring devices.  

Code of Federal Regulations, 2013 CFR

...devices. The reliability of any spring device used in the control system must be established by tests simulating service conditions unless failure of the spring will not cause flutter or unsafe flight...

2013-01-01

429

14 CFR 23.687 - Spring devices.  

Code of Federal Regulations, 2011 CFR

...devices. The reliability of any spring device used in the control system must be established by tests simulating service conditions unless failure of the spring will not cause flutter or unsafe flight...

2011-01-01

430

14 CFR 23.687 - Spring devices.  

Code of Federal Regulations, 2010 CFR

...devices. The reliability of any spring device used in the control system must be established by tests simulating service conditions unless failure of the spring will not cause flutter or unsafe flight...

2010-01-01

431

14 CFR 23.687 - Spring devices.  

Code of Federal Regulations, 2012 CFR

...devices. The reliability of any spring device used in the control system must be established by tests simulating service conditions unless failure of the spring will not cause flutter or unsafe flight...

2012-01-01

432

14 CFR 23.687 - Spring devices.  

...devices. The reliability of any spring device used in the control system must be established by tests simulating service conditions unless failure of the spring will not cause flutter or unsafe flight...

2014-01-01

433

Noninvasive Devices May Help Migraines, FDA Says  

MedlinePLUS

... page, please enable JavaScript. Noninvasive Devices May Help Migraines, FDA Says New treatments might aid those who ... 22, 2014 Related MedlinePlus Pages Medical Device Safety Migraine MONDAY, Sept. 22, 2014 (HealthDay News) -- Two new ...

434

78 FR 15878 - Taxable Medical Devices; Correction  

Federal Register 2010, 2011, 2012, 2013

...the blood glucose monitors under 21 CFR part 862 (Clinical Chemistry and Clinical Toxicology Devices) and product code...classifies the test strips under 21 CFR part 862 (Clinical Chemistry and Clinical Toxicology Devices) and product...

2013-03-13

435

14 CFR 25.459 - Special devices.  

Code of Federal Regulations, 2012 CFR

...AIRPLANES Structure Control Surface and System Loads § 25.459 Special devices. The loading for special devices using aerodynamic surfaces (such as slots, slats and spoilers) must be determined from test data. [Doc. No. 5066, 29 FR...

2012-01-01

436

14 CFR 25.459 - Special devices.  

...AIRPLANES Structure Control Surface and System Loads § 25.459 Special devices. The loading for special devices using aerodynamic surfaces (such as slots, slats and spoilers) must be determined from test data. [Doc. No. 5066, 29 FR...

2014-01-01

437

14 CFR 25.459 - Special devices.  

Code of Federal Regulations, 2010 CFR

...AIRPLANES Structure Control Surface and System Loads § 25.459 Special devices. The loading for special devices using aerodynamic surfaces (such as slots, slats and spoilers) must be determined from test data. [Doc. No. 5066, 29 FR...

2010-01-01

438

Rapid prototyping method for a microfluidics device  

E-print Network

The product design process can be described as a number of steps taken to turn an idea into a reality. One particular design process of creating a microfluidics device was studied and analyzed. A device containing channels ...

Klauber, Kameron L

2012-01-01

439

Remote possibly hazardous content container sampling device  

DOEpatents

The present invention relates to an apparatus capable of sampling enclosed containers, where the contents of the container is unknown. The invention includes a compressed air device capable of supplying air pressure, device for controlling the amount of air pressure applied, a pneumatic valve, a sampling device having a hollow, sampling insertion needle suspended therein and device to communicate fluid flow between the container and a containment vessel, pump or direct reading instrument.

Volz, David L. (59 La Paloma, Los Alamos, NM 87544)

1998-01-01

440

Synaptic electronics: materials, devices and applications  

NASA Astrophysics Data System (ADS)

In this paper, the recent progress of synaptic electronics is reviewed. The basics of biological synaptic plasticity and learning are described. The material properties and electrical switching characteristics of a variety of synaptic devices are discussed, with a focus on the use of synaptic devices for neuromorphic or brain-inspired computing. Performance metrics desirable for large-scale implementations of synaptic devices are illustrated. A review of recent work on targeted computing applications with synaptic devices is presented.

Kuzum, Duygu; Yu, Shimeng; Wong, H.-S. Philip

2013-09-01

441

A life-saving device for ships  

NASA Technical Reports Server (NTRS)

A life-saving device is described which can be used on either ships or airplanes. The device consists of an airtight container for passengers equipped with elements needed for survival (oxygen, food, medicines, etc.), an energy source, and a parachute. This device can be ejected from the plane or ship when an emergency arises.

Converti, P.

1985-01-01

442

Medical Devices and Systems PRECISE Center  

E-print Network

that are not likely to be met by research in your field alone? ­ Advances in medical devices domain requires12/16/2008 1 Medical Devices and Systems Insup Lee PRECISE Center Department Computer and Information Science University of Pennsylvania 12/15/08 CPS Information Day Medical Devices Containing

Rajkumar, Ragunathan "Raj"

443

Remote gaming on resource-constrained devices  

Microsoft Academic Search

Games have become important applications on mobile devices. A mobile gaming approach known as remote gaming is being developed to support games on low cost mobile devices. In the remote gaming approach, the responsibility of rendering a game and advancing the game play is put on remote servers instead of the resource constrained mobile devices. The games rendered on the

Waazim Reza; Hari Kalva; Richard Kaufman

2010-01-01

444

Fabrication of microfluidic devices using polydimethylsiloxane  

PubMed Central

Polydimethylsiloxane (PDMS) is nearly ubiquitous in microfluidic devices, being easy to work with, economical, and transparent. A detailed protocol is provided here for using PDMS in the fabrication of microfluidic devices to aid those interested in using the material in their work, with information on the many potential ways the material may be used for novel devices. PMID:20697575

Friend, James; Yeo, Leslie

2010-01-01

445

Rapid prototyping of functional microfabricated devices by  

E-print Network

Rapid prototyping of functional microfabricated devices by soft lithography D B WOLFE and G M of functional devices: #12;" f Rapid prototyping of functional microfabricated devices 77 . -2 1. They are rapid i cost facilitates the rapid prototyping of microdevices by soft lithography. ? The pattern

Prentiss, Mara

446

Encapsulation of optoelectronic devices for severe environments  

Microsoft Academic Search

A study of encapsulant systems used in packaging of optoelectronic devices was performed with major emphasis on LED displays. The study concentrated on the evaluation of the reliability of epoxy-encapsulated devices and on the development of a new encapsulant system that would provide extended life of the devices in severe environments, particularly long durations of temperature cycling. Test results demonstrate

S. J. Price; R. L. Johnson; J. F. Chapman

1976-01-01

447

Device Impact on User Mobile Infotainment Access  

Microsoft Academic Search

User considerations are paramount when it comes to take up of technologies, and even more so in the case of mobile devices, in which the success of a particular device often depends on its novelty appeal. However, relatively little work has been undertaken exploring how day-to-day tasks are affected when mediated by such access devices. This paper reports the results

T. Serif; G. Ghinea

448

A novel multiple blade ultrasonic cutting device  

Microsoft Academic Search

In ultrasonic devices consisting of serially coupled tuned components, components whose tuned length dimension is large compared to other dimensions, or components with profiles designed for high gain, the response of the device during operation is often characterised by modal interactions, and especially the excitation of combination resonances. The effects on ultrasonic devices are high noise levels, component failures and

Andrea Cardoni; Margaret Lucas; Matthew Cartmell; Fannon Lim

2004-01-01

449

INVERSE DOPING PROBLEMS FOR SEMICONDUCTOR DEVICES  

E-print Network

INVERSE DOPING PROBLEMS FOR SEMICONDUCTOR DEVICES Martin Burger #3; Institut f is devoted to a class of inverse problems arising in the test- ing of semiconductor devices, namely of semiconductor devices has developed well in the last #12;fty years, since Van Roosbroeck (cf.[20]) #12;rst

Markowich, Peter A.

450

MODULARIZATION OF WASTE WATER PURIFICATION DEVICE  

Microsoft Academic Search

Lots of housings (dwellings) are situated on the landscape where sewerage is often missing. An automatic water-cleaning device is needed for collecting and cleaning wastewater of one or group of houses. The productivity of the device has to be adjustable in quite large range. Simple assemble and easy maintenance of the device is needed. Development of biorotor type wastewater purification

Peeter Tars; Lembit Roosimölder

451

Commercial Magneto-Rheological Fluid Devices  

Microsoft Academic Search

Controllable magnetorheological (MR) fluid devices have reached the stage where they are in commercial production. Such devices are finding application in a variety of real world situations ranging from active vibration control to aerobic exercise equipment. Examples of several, commercial MR fluid devices are described and the comparative ability of MR and ER fluids to meet the needs of practical

D. M. Catanzarite; K. A. St. Clair

1996-01-01

452

Negative ions in inertial electrostatic confinement devices  

Microsoft Academic Search

The UW-Inertial Electrostatic Confinement (IEC) device is comprised of concentric, nearly transparent, spherical metallic grids within a cylindrical vacuum vessel. The central grid, which can be held at high negative potentials (~ -100 to -200 kV) is the device cathode, while the outer grid, held at ground potential, is the device anode. This configuration accelerates ions, created near the anode,

D. R. Boris; J. F. Santarius; G. L. Kulcinski

2009-01-01

453

Trends in Hardware Architecture for Mobile Devices  

Microsoft Academic Search

In the last ten years, two main factors have fueled the steady growth in sales of mobile computing and communication devices: a) the reduction of the footprint of the devices themselves, such as cellular handsets and small computers; and b) the success in developing low-power hardware which allows the devices to operate autonomously for hours or even days. In this

Margarita Esponda

454

Portable control device for networked mobile robots  

DOEpatents

A handheld control device provides a way for controlling one or multiple mobile robotic vehicles by incorporating a handheld computer with a radio board. The device and software use a personal data organizer as the handheld computer with an additional microprocessor and communication device on a radio board for use in controlling one robot or multiple networked robots.

Feddema, John T. (Albuquerque, NM); Byrne, Raymond H. (Albuquerque, NM); Bryan, Jon R. (Edgewood, NM); Harrington, John J. (Albuquerque, NM); Gladwell, T. Scott (Albuquerque, NM)

2002-01-01

455

Programmable Logic Devices (PLDs) Lesson Objectives  

E-print Network

Programmable Logic Devices (PLDs) Lesson Objectives: In this lesson you will be introduced to some types of Programmable Logic Devices (PLDs): PROM, PAL, PLA, CPLDs, FPGAs, etc. How to implement digital. that can be configured by the user to perform different functions is called a Programmable Logic Device

Bouhraoua, Abdelhafid

456

Dynamic avalanche in bipolar power devices  

Microsoft Academic Search

In bipolar power devices, remaining plasma is extracted during turn-off. In high-voltage devices, even at moderate conditions dynamic avalanche caused by the free carriers appears. Strong dynamic avalanche leads to filament formation. The effect must not be destructive as long as the filaments can move. Effects which are common in the bipolar devices GTO, GCT, IGBT and power diode are

Josef Lutz; Roman Baburske

457

Innovation and the medical devices Farady partnership.  

PubMed

Demand for development of new generation medical devices has led many governments to support medical-sector research. In the United Kingdom, the Medical Devices Faraday Partnership was created to establish a collaborative network that would enhance the transfer of good ideas into new products and processes. The services it offers medical device manufacturers are outlined here. PMID:15984545

Tavakoli, M; Dunkerton, S B

2005-06-01

458

Radiation-Hardness Data For Semiconductor Devices  

NASA Technical Reports Server (NTRS)

Document presents data on and analysis of radiation hardness of various semiconductor devices. Data specifies total-dose radiation tolerance of devices. Volume 1 of report covers diodes, bipolar transistors, field effect transistors, silicon controlled rectifiers and optical devices. Volume 2 covers integrated circuits. Volume 3 provides detailed analysis of data in volumes 1 and 2.

Price, W. E.; Nichols, D. K.; Brown, S. F.; Gauthier, M. K.; Martin, K. E.

1984-01-01

459

The design space of input devices  

Microsoft Academic Search

A bewildering variety of devices for communication from humans to computers now exists on the market. In order to make sense of this variety, and to aid in the design of new input devices, we propose a framework for describing and analyzing input devices. Following Mackinlay's semantic analysis of the design space for graphical presentations, our goal is to provide

Stuart K. Card; Jock D. Mackinlay; George G. Robertson

1990-01-01

460

Characterization of implantable microfabricated fluid delivery devices  

Microsoft Academic Search

The formal characterization of the performance of microfluidic delivery devices is crucial for reliable in vivo application. A comprehensive laboratory technique was developed and used to optimize, calibrate and validate microfabricated fluid delivery devices. In vivo experiments were carried out to verify the accuracy and reliability of the pressure driven devices. Acute guinea pig experiments were conducted to measure the

Ruben Rathnasingham; Daryl R. Kipke; Sanford C. Bledsoe; John D. McLaren

2004-01-01

461

Regulatory Requirements for Devices for the Handicapped.  

ERIC Educational Resources Information Center

This booklet explains in question/answer form the basic regulatory requirements established by the Food and Drug Administration (FDA) of the federal government concerning the manufacture, marketing and distribution of medical devices (including implantable devices and devices previously regulated as drugs) for persons with disabilities. Topics…

Stigi, John, Ed.; Rivera, Richard J., Ed.

462

Device Concepts in Semiconductor Spintronics  

NASA Astrophysics Data System (ADS)

Semiconductor spintronics has now reached a stage where the basic physical mechanisms controlling spin injection and detection are understood. Moreover, some critical technological issues involved in the growth and lithography of the magnetic semiconductors have been solved. This has allowed us to explore the physics of meanwhile quite complex spintronic devices. The lectures will start with an introduction to spin transport in metals and semiconductors. Building upon this, I will discuss various simple devices that demonstrate this basic physics in action. Subsequently, more advanced devices will be covered. For example, I will discuss resonant tunneling diodes (RTDs) fabricated from paramagnetic II-VI semiconductors that can be operated as a voltage controlled spin-switch. A quantum dot version of these RTDs exhibits, unexpectedly, remanent magnetism at zero external field, which we interpret as resulting from tunneling through a single magnetic polaron. In the ferromagnetic semiconductor (Ga, Mn)As we have observed a very large spin valve effect due to domain wall pinning at sub-10 nm sized constrictions. Furthermore, we have found a novel magnetoresistance effect in this material, dubbed tunnel anisotropic magnetoresistance (TAMR), which is due to the strongly (magneto-)anisotropic density of states in a ferromagnetic semiconductor. The effect leads to the observation of a spin valve-like behavior in tunnel structures containg a single ferromagnetic layer and also dominates the spin-valve signal obtained from structures containing two (Ga, Mn)As layers, where the effect may cause resistance changes of five orders of magnitude. Note from Publisher: This article contains the abstract only.

Molenkamp, Laurens W.

463

Electrostatically actuatable light modulating device  

DOEpatents

The electrostatically actuatable light modulator utilizes an opaque substrate plate patterned with an array of aperture cells, the cells comprised of physically positionable dielectric shutters and electrostatic actuators. With incorporation of a light source and a viewing screen, a projection display system is effected. Inclusion of a color filter array aligned with the aperture cells accomplishes a color display. The system is realized in terms of a silicon based manufacturing technology allowing fabrication of a high resolution capability in a physically small device which with the utilization of included magnification optics allows both large and small projection displays.

Koehler, Dale R. (1332 Wagontrain Dr., Albuquerque, NM 87123)

1991-01-01

464

Self Cooling/Heating Devices  

NASA Technical Reports Server (NTRS)

A NASA RTTC assisted International Thermal Packaging (ITP) in the identification of a NASA-developed synthetic polymer that can absorb 1,000 times its weight in water. The desiccant was used in the manufacture of a self-chilling can, a major innovation for packaging food and beverages. The refrigeration device is a small cylinder, fully incorporated into the can. When used in beverage containers, the top of the can is popped, the internal carbonization pressure is relieved, and the self-chilling reaction is induced. Company product line has been expanded to include two related products, and several licensing agreements have been signed.

1992-01-01

465

Protective laser beam viewing device  

DOEpatents

A protective laser beam viewing system or device including a camera selectively sensitive to laser light wavelengths and a viewing screen receiving images from the laser sensitive camera. According to a preferred embodiment of the invention, the camera is worn on the head of the user or incorporated into a goggle-type viewing display so that it is always aimed at the area of viewing interest to the user and the viewing screen is incorporated into a video display worn as goggles over the eyes of the user.

Neil, George R.; Jordan, Kevin Carl

2012-12-18

466

Designing a Robotic Surgical Device  

NSDL National Science Digital Library

Student teams create laparoscopic surgical robots designed to reduce the invasiveness of diagnosing endometriosis and investigate how the disease forms and spreads. Using a synthetic abdominal cavity simulator, students test and iterate their remotely controlled, camera-toting prototype devices, which must fit through small incisions, inspect the organs and tissue for disease, obtain biopsies, and monitor via ongoing wireless image-taking. Note: This activity is the core design project for a semester-long, three-credit high school engineering course. Refer to the associated curricular unit for preparatory lessons and activities.

Integrated Teaching And Learning Program

467

Radiation scanning and measuring device  

SciTech Connect

A scanning device for examining an object with gamma rays with shielding for protection from radiation and protection of the mechanism from heat by a cooling jacket formed by spaced plates around the object. The shielding is formed by a pair of shutter-halves forming a lead shutter with mechanism to move the shutter-halves toward and away from each other and one of the shutter-halves mounted on a rotating drum which also carries three gamma ray sources. Gamma ray detectors are mounted in a circle concentric and outside the circle of the sources.

Tatham, E. J.; Clymer, J. C.; Hoffman, C. D.; Kravits, R.

1985-04-16

468

Photopolymerized Electrolytes For Electrochromic Devices  

NASA Technical Reports Server (NTRS)

Thin ion-conducting electrolyte films for use in electrochromic devices now fabricated relatively easily and quickly with any of class of improved formulations containing ultraviolet-polymerizable components. Formulations are liquids in their monomeric forms and self-supporting, transparent solids in their polymeric forms. Thin solid electrolytes form quickly and easily between electrode-bearing substrates. Film thus polymerized acts not only as solid electrolyte but also as glue holding laminate together: feature simplifies fabrication by reducing need for sealants and additional mechanical supports.

Cogan, Stuart; Rauh, R. David

1994-01-01

469

Inertial impaction air sampling device  

DOEpatents

An inertial impactor to be used in an air sampling device for collection of respirable size particles in ambient air which may include a graphite furnace as the impaction substrate in a small-size, portable, direct analysis structure that gives immediate results and is totally self-contained allowing for remote and/or personal sampling. The graphite furnace collects suspended particles transported through the housing by means of the air flow system, and these particles may be analyzed for elements, quantitatively and qualitatively, by atomic absorption spectrophotometry.

Dewhurst, Katharine H. (13150 Wenonah SE. Apt. 727, Albuquerque, NM 87123)

1990-01-01

470

Electronically Controlled Continuous Culture Device  

PubMed Central

A photocell-controlled continuous culture device, a Nephelostat, is described that maintains a wide variety of cultures of microorganisms in balanced growth. This Nephelostat controls concentrations of bacteria within ±3% over a cell concentration range of 106 to 109 cells per ml. Growth rates are recorded so that changes in the growth rate are observed over small increments of time. Spontaneous and caffeine-induced mutation rates of two strains of Escherichia coli were compared under Nephelostat and chemostat conditions. Images Fig. 1 Fig. 3 Fig. 4 PMID:4877660

Eisler, William J.; Webb, Robert B.

1968-01-01

471

Fullerene Derived Molecular Electronic Devices  

NASA Technical Reports Server (NTRS)

The carbon Nanotube junctions have recently emerged as excellent candidates for use as the building blocks in the formation of nanoscale electronic devices. While the simple joint of two dissimilar tubes can be generated by the introduction of a pair of heptagon-pentagon defects in an otherwise perfect hexagonal grapheme sheet, more complex joints require other mechanisms. In this work we explore structural and electronic properties of complex 3-point junctions of carbon nanotubes using a generalized tight-binding molecular-dynamics scheme.

Menon, Madhu; Srivastava, Deepak; Saini, Subbash

1998-01-01

472

Inertial impaction air sampling device  

DOEpatents

An inertial impactor to be used in an air sampling device for collection of respirable size particles in ambient air which may include a graphite furnace as the impaction substrate in a small-size, portable, direct analysis structure that gives immediate results and is totally self-contained allowing for remote and/or personal sampling. The graphite furnace collects suspended particles transported through the housing by means of the air flow system, and these particles may be analyzed for elements, quantitatively and qualitatively, by atomic absorption spectrophotometry. 3 figs.

Dewhurst, K.H.

1987-12-10

473

Medical Device Industry Educatinon Cosortium  

NSDL National Science Digital Library

The Medical Device Industry Education Consortium (MDIEC) was formed to build a learning and innovation network to develop and deliver industry-endorsed solutions that address critical industry-defined technical education and training needs. St. Petersburg College (SPC) led a group of Eight Community Colleges and Fifteen Industry partners to co-found the consortium. A Department of Education (DOE) Grant funded the initial formation and curriculum development. SPC along with Anoka-Ramsey Community College in Minnesota and Edmonds Community College in Washington State was awarded a National Science Foundation (NSF) Grant to further MDIEC and develop curriculum in three critical training areas: quality systems, information management and clinical data management.

Sullivan, Michael

2009-07-14

474

Wavelet library for constrained devices  

NASA Astrophysics Data System (ADS)

The wavelet transform is a powerful tool for image and video processing, useful in a range of applications. This paper is concerned with the efficiency of a certain fast-wavelet-transform (FWT) implementation and several wavelet filters, more suitable for constrained devices. Such constraints are typically found on mobile (cell) phones or personal digital assistants (PDA). These constraints can be a combination of; limited memory, slow floating point operations (compared to integer operations, most often as a result of no hardware support) and limited local storage. Yet these devices are burdened with demanding tasks such as processing a live video or audio signal through on-board capturing sensors. In this paper we present a new wavelet software library, HeatWave, that can be used efficiently for image/video processing/analysis tasks on mobile phones and PDA's. We will demonstrate that HeatWave is suitable for realtime applications with fine control and range to suit transform demands. We shall present experimental results to substantiate these claims. Finally this library is intended to be of real use and applied, hence we considered several well known and common embedded operating system platform differences; such as a lack of common routines or functions, stack limitations, etc. This makes HeatWave suitable for a range of applications and research projects.

Ehlers, Johan Hendrik; Jassim, Sabah A.

2007-04-01

475

Pipe weld crown removal device  

DOEpatents

A device is provided for grinding down the crown of a pipe weld joining aligned pipe sections so that the weld is substantially flush with the pipe sections joined by the weld. The device includes a cage assembly comprising a pair of spaced cage rings adapted to be mounted for rotation on the respective pipe sections on opposite sides of the weld, a plurality of grinding wheels, supported by the cage assembly for grinding down the crown of the weld, and a plurality of support shafts, each extending longitudinally along the joined pipe sections, parallel thereto, for individually mounting respective grinding wheels. Each end of the support shafts is mounted for rotation in a bearing assembly housed within a radially directed opening in a corresponding one of the cage rings so as to provide radial movement of the associated shaft, and thus of the associated grinding wheel, towards and away from the weld. A first drive sprocket provides rotation of the cage assembly around the pipe sections while a second drive unit, driven by a common motor, provides rotation of the grinding wheels.

Sword, Charles K. (Pleasant Hills, PA); Sette, Primo J. (West Newton, PA)

1992-01-01

476

Automatic locking orthotic knee device  

NASA Technical Reports Server (NTRS)

An articulated tang in clevis joint for incorporation in newly manufactured conventional strap-on orthotic knee devices or for replacing such joints in conventional strap-on orthotic knee devices is discussed. The instant tang in clevis joint allows the user the freedom to extend and bend the knee normally when no load (weight) is applied to the knee and to automatically lock the knee when the user transfers weight to the knee, thus preventing a damaged knee from bending uncontrollably when weight is applied to the knee. The tang in clevis joint of the present invention includes first and second clevis plates, a tang assembly and a spacer plate secured between the clevis plates. Each clevis plate includes a bevelled serrated upper section. A bevelled shoe is secured to the tank in close proximity to the bevelled serrated upper section of the clevis plates. A coiled spring mounted within an oblong bore of the tang normally urges the shoes secured to the tang out of engagement with the serrated upper section of each clevic plate to allow rotation of the tang relative to the clevis plate. When weight is applied to the joint, the load compresses the coiled spring, the serrations on each clevis plate dig into the bevelled shoes secured to the tang to prevent relative movement between the tang and clevis plates. A shoulder is provided on the tang and the spacer plate to prevent overextension of the joint.

Weddendorf, Bruce C. (inventor)

1993-01-01

477

Passive fault current limiting device  

DOEpatents

A passive current limiting device and isolator is particularly adapted for use at high power levels for limiting excessive currents in a circuit in a fault condition such as an electrical short. The current limiting device comprises a magnetic core wound with two magnetically opposed, parallel connected coils of copper, a high temperature superconductor or other electrically conducting material, and a fault element connected in series with one of the coils. Under normal operating conditions, the magnetic flux density produced by the two coils cancel each other. Under a fault condition, the fault element is triggered to cause an imbalance in the magnetic flux density between the two coils which results in an increase in the impedance in the coils. While the fault element may be a separate current limiter, switch, fuse, bimetal strip or the like, it preferably is a superconductor current limiter conducting one-half of the current load compared to the same limiter wired to carry the total current of the circuit. The major voltage during a fault condition is in the coils wound on the common core in a preferred embodiment. 6 figs.

Evans, D.J.; Cha, Y.S.

1999-04-06

478

Passive fault current limiting device  

DOEpatents

A passive current limiting device and isolator is particularly adapted for use at high power levels for limiting excessive currents in a circuit in a fault condition such as an electrical short. The current limiting device comprises a magnetic core wound with two magnetically opposed, parallel connected coils of copper, a high temperature superconductor or other electrically conducting material, and a fault element connected in series with one of the coils. Under normal operating conditions, the magnetic flux density produced by the two coils cancel each other. Under a fault condition, the fault element is triggered to cause an imbalance in the magnetic flux density between the two coils which results in an increase in the impedance in the coils. While the fault element may be a separate current limiter, switch, fuse, bimetal strip or the like, it preferably is a superconductor current limiter conducting one-half of the current load compared to the same limiter wired to carry the total current of the circuit. The major voltage during a fault condition is in the coils wound on the common core in a preferred embodiment.

Evans, Daniel J. (Wheeling, IL); Cha, Yung S. (Darien, IL)

1999-01-01

479

Infrared emitting device and method  

DOEpatents

The infrared emitting device comprises a III-V compound semiconductor substrate upon which are grown a quantum-well active region having a plurality of quantum-well layers formed of a ternary alloy comprising InAsSb sandwiched between barrier layers formed of a ternary alloy having a smaller lattice constant and a larger energy bandgap than the quantum-well layers. The quantum-well layers are preferably compressively strained to increase the threshold energy for Auger recombination; and a method is provided for determining the preferred thickness for the quantum-well layers. Embodiments of the present invention are described having at least one cladding layer to increase the optical and carrier confinement in the active region, and to provide for waveguiding of the light generated within the active region. Examples have been set forth showing embodiments of the present invention as surface- and edge-emitting light emitting diodes (LEDs), an optically-pumped semiconductor laser, and an electrically-injected semiconductor diode laser. The light emission from each of the infrared emitting devices of the present invention is in the midwave infrared region of the spectrum from about 2 to 6 microns. 8 figs.

Kurtz, S.R.; Biefeld, R.M.; Dawson, L.R.; Howard, A.J.; Baucom, K.C.

1997-04-29

480

Chaotic Mixing in Microfluidic Devices  

NSDL National Science Digital Library

Microfluidic flows are normally low Reynolds number (Re) due to the very small length scales at which these devices are fabricated. This makes turbulent flow virtually impossible to achieve and the mixing of fluids is generally slow and diffusion controlled. Mixing can be greatly enhanced in the laminar flow regime by subjecting the fluid to chaotic flow kinematics. In chaotic advection, material lines undergo complex patterns of stretching and folding. Mixing is greatly enhanced both by the tendency of fluid particles to become homogeneously dispersed, and by a decrease in the length scale for diffusion between unlike components. In this work, mixing in microfluidic devices in which flow in the streamwise direction is perturbed by oscillatory transverse flow has been studied. Numerical simulation of the unsteady Navier-Stokes equations has been used to determine combinations of flow geometries and boundary conditions which lead to chaotic mixing regimes. The flows are shown to be chaotic by the computation of positive Lyapunov exponents and by visual inspection of particle scatter when material lines undergo stretching and folding. A number of cases that show promise for future experimental work will be shown.

Hughes, Nicholas

2005-01-01

481

Device for absorbing mechanical shock  

DOEpatents

This invention is a comparatively inexpensive but efficient shock-absorbing device having special application to the protection of shipping and storage cylinders. In a typical application, two of the devices are strapped to a cylinder to serve as saddle-type supports for the cylinder during storage and to protect the cylinder in the event it is dropped during lifting or lowering operations. In its preferred form, the invention includes a hardwood plank whose grain runs in the longitudinal direction. The basal portion of the plank is of solid cross-section, whereas the upper face of the plank is cut away to form a concave surface fittable against the sidewall of a storage cylinder. The concave surface is divided into a series of segments by transversely extending, throughgoing relief slots. A layer of elastomeric material is positioned on the concave face, the elastomer being extrudable into slots when pressed against the segments by a preselected pressure characteristic of a high-energy impact. The compressive, tensile, and shear properties of the hardwood and the elastomer are utilized in combination to provide a surprisingly high energy-absorption capability.

Newlon, Charles E. (Knoxville, TN)

1980-01-01

482

Automated internal pipe cutting device  

DOEpatents

The invention is a remotely controlled internal pipe cutting device primarily used for cutting pipes where the outside of the pipe is inaccessible at the line where the cut is to be made. The device includes an axial ram within a rotational cylinder which is enclosed in a housing. The housing is adapted for attachment to an open end of the pipe and for supporting the ram and cylinder in cantilever fashion within the pipe. A radially movable cutter, preferably a plasma arc torch, is attached to the distal end of the ram. A drive mechanism, containing motors and mechanical hardware for operating the ram and cylinder, is attached to the proximal end of the housing. The ram and cylinder provide for moving the cutter axially and circumferentially, and a cable assembly attached to a remote motor provide for the movement of the cutter radially, within the pipe. The control system can be adjusted and operated remotely to control the position and movement of the cutter to obtain the desired cut. The control system can also provide automatic standoff control for a plasma arc torch.

Godlewski, William J. (Clifton Park, NY); Haffke, Gary S. (Ballston Spa, NY); Purvis, Dale (Amsterdam, NY); Bashar, Ronald W. (Oakdale, CT); Jones, Stewart D. (Mechanicville, NY); Moretti, Jr., Henry (Cranston, RI); Pimentel, James (Warwick, RI)

2003-01-21

483

Polariton devices and quantum fluids  

NASA Astrophysics Data System (ADS)

Exciton-polaritons, composite particles resulting from the strong coupling between excitons and photons, have shown the capability to undergo condensation into a macroscopically coherent quantum state, demonstrating strong non-linearities and unique propagation properties. These strongly-coupled light-matter particles are promising candidates for the realization of semiconductor all-optical devices with fast time response and small energy consumption. Recently, quantum fluids of polaritons have been used to demonstrate the possibility to implement optical functionalities as spin switches, transistors or memories, but also to provide a channel for the transmission of information inside integrated circuits. In this context, the possibility to extend the range of light-matter interaction up to room temperature becomes of crucial importance. One of the most intriguing promises is to use organic Frenkel excitons, which, thanks to their huge oscillator strength, not only sustain the polariton picture at room temperature, but also bring the system into the unexplored regime of ultra-strong coupling. The combination of these materials with ad-hoc designed structures may allow the control of the propagation properties of polaritons, paving the way towards their implementation of the polariton functionalities in actual devices for opto-electronic applications.

Ballarini, D.; De Giorgi, M.; Lerario, G.; Cannavale, A.; Cancellieri, E.; Bramati, A.; Gigli, G.; Laussy, F.; Sanvitto, D.

2014-02-01

484

Chapter 9: Photovoltaic DevicesChapter 9: Photovoltaic Devices Solar energy spectrumSolar energy spectrum  

E-print Network

Chapter 9: Photovoltaic DevicesChapter 9: Photovoltaic Devices Solar energy spectrumSolar energy spectrum Photovoltaic device principlesPhotovoltaic device principles pn junction photovoltaic I-V characteristics Series and shunt resistanceSeries and shunt resistance Temperature effectse pe a u e e ec s Solar

Wang, Jianfang

485

Health Sciences Library Resources for Mobile Device Users Wireless Access for Mobile Devices  

E-print Network

1 Health Sciences Library Resources for Mobile Device Users Wireless Access for Mobile Devices to configure your mobile device; instructions are available at http://www.usask.ca/ict/services/network-services/wireless/index.php - Assistance with accessing University services (such as wireless) on mobile devices is available from the ICT

Peak, Derek

486

Flooding Data in a Cell: Is Cellular Multicast Better than Device-to-Device Communications?  

E-print Network

Flooding Data in a Cell: Is Cellular Multicast Better than Device-to-Device Communications? Filippo Communications & Security {filippo.rebecchi, marcelo.amorim}@lip6.fr vania.conan@thalesgroup.com ABSTRACT, providing device-to-device communications over an orthogonal channel increases the efficiency of multicast

Boyer, Edmond

487

77 FR 68788 - Neurological Devices Panel of the Medical Devices Advisory Committee; Notice of Meeting  

Federal Register 2010, 2011, 2012, 2013

...Neurological Devices Panel of the Medical Devices Advisory Committee...multilumen device with two balloons mounted near the distal tip...inflation of the individual balloons. The device is placed in the...patients who have failed maximal medical management. Of note,...

2012-11-16

488

77 FR 61768 - Neurological Devices Panel of the Medical Devices Advisory Committee; Notice of Meeting  

Federal Register 2010, 2011, 2012, 2013

...Neurological Devices Panel of the Medical Devices Advisory Committee...multi-lumen device with two balloons mounted near the distal tip...inflation of the individual balloons. The device is placed in the...patients who have failed maximal medical management. Of note,...

2012-10-11

489

Nanoscale resistive switching devices: mechanisms and modeling.  

PubMed

Resistive switching devices (also termed memristive devices or memristors) are two-terminal nonlinear dynamic electronic devices that can have broad applications in the fields of nonvolatile memory, reconfigurable logic, analog circuits, and neuromorphic computing. Current rapid advances in memristive devices in turn demand better understanding of the switching mechanism and the development of physics-based as well as simplified device models to guide future device designs and circuit-level applications. In this article, we review the physical processes behind resistive switching (memristive) phenomena and discuss the experimental and modeling efforts to explain these effects. In this article three categories of devices, in which the resistive switching effects are driven by cation migration, anion migration, and electronic effects, will be discussed. The fundamental driving forces and the stochastic nature of resistive switching will also be discussed. PMID:24057010

Yang, Yuchao; Lu, Wei

2013-11-01

490

21 CFR 862.1675 - Blood specimen collection device.  

Code of Federal Regulations, 2013 CFR

...ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES CLINICAL CHEMISTRY AND CLINICAL TOXICOLOGY DEVICES Clinical Chemistry Test Systems § 862.1675 Blood specimen collection device. (a)...

2013-04-01

491

21 CFR 862.1675 - Blood specimen collection device.  

...ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES CLINICAL CHEMISTRY AND CLINICAL TOXICOLOGY DEVICES Clinical Chemistry Test Systems § 862.1675 Blood specimen collection device. (a)...

2014-04-01

492

21 CFR 864.3400 - Device for sealing microsections.  

Code of Federal Regulations, 2012 CFR

...DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES HEMATOLOGY AND PATHOLOGY DEVICES Pathology Instrumentation and Accessories § 864.3400 Device for sealing microsections. (a)...

2012-04-01

493

21 CFR 864.3400 - Device for sealing microsections.  

Code of Federal Regulations, 2010 CFR

...DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES HEMATOLOGY AND PATHOLOGY DEVICES Pathology Instrumentation and Accessories § 864.3400 Device for sealing microsections. (a)...

2010-04-01

494

21 CFR 864.3400 - Device for sealing microsections.  

...DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES HEMATOLOGY AND PATHOLOGY DEVICES Pathology Instrumentation and Accessories § 864.3400 Device for sealing microsections. (a)...

2014-04-01

495

21 CFR 864.3400 - Device for sealing microsections.  

Code of Federal Regulations, 2011 CFR

...DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES HEMATOLOGY AND PATHOLOGY DEVICES Pathology Instrumentation and Accessories § 864.3400 Device for sealing microsections. (a)...

2011-04-01

496

21 CFR 864.3400 - Device for sealing microsections.  

Code of Federal Regulations, 2013 CFR

...DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES HEMATOLOGY AND PATHOLOGY DEVICES Pathology Instrumentation and Accessories § 864.3400 Device for sealing microsections. (a)...

2013-04-01

497

Cryogenic vacuumm RF feedthrough device  

DOEpatents

A cryogenic vacuum rf feedthrough device comprising: 1) a probe for insertion into a particle beam; 2) a coaxial cable comprising an inner conductor and an outer conductor, a dielectric/insulating layer surrounding the inner conductor, the latter being connected to the probe for the transmission of higher mode rf energy from the probe; and 3) a high thermal conductivity stub attached to the coaxial dielectric about and in thermal contact with the inner conductor which high thermal conductivity stub transmits heat generated in the vicinity of the probe efficiently and radially from the area of the probe and inner conductor all while maintaining useful rf transmission line characteristics between the inner and outer coaxial conductors.

Wu, Genfa (Yorktown, VA); Phillips, Harry Lawrence (Hayes, VA)

2008-12-30

498

Superconducting Quantum Interference Devices (SQUIDs)  

NSDL National Science Digital Library

Superconducting Quantum Interference Devices (SQUIDs) are sensitive probes that can detect small changes in the magnetic field. They take advantage of two important properties of superconductors, namely flux quantization and the Josephson effect. Furthermore, SQUIDs demonstrate quantum effects on the macroscopic scale, such as macroscopic wavefunctions, quantum interference and quantum mechanical tunneling. SQUID is a commercially available high temperature superconducting (HTS) DC SQUID magnetometer that will be used for our prototypical experiments. The objectives of this experiment are: 1. study the basic principles underlying SQUID applications, 2. observe zero resistance of superconductors and examine the superconducting phase transition, 3. observe the DC Josephson effect, 4. observe the periodically varying critical current in the resistive mode of the SQUID, 5. learn about the detection of extremely small magnetic fields by converting them into voltages and using a feedback loop, 6. measure the electrical characteristics of SQUID Josephson junctions and 7. build an ac/dc nano-voltmeter.

Khalid, Asma; Salman, Rabiya; Anwar, Muhammad S.

2012-02-13

499

Optomechanical devices, entanglement and teleportation  

E-print Network

In this thesis we study continuous variable systems, focusing on optomechanical devices where a laser field interacts with a macroscopic mechanical oscillator through radiation pressure. We consider the optimization problem of quantum teleportation by means of Gaussian local operations and we study the relation between the amount of entanglement shared by Alice and Bob and the maximum fidelity they can reach for the teleportation of coherent states. We also theoretically predict the possibility of creating a robust entaglement between a mechanical mode of a Fabry-Perot mirror and the Stokes sidband of the output field. We show that by driving two different optical modes supported by the cavity, a stable steady state is reachable in which the optomechanical entanglement is significantly improved.

Andrea Mari

2009-01-12

500

Field emitter array memory device  

NASA Astrophysics Data System (ADS)

A field emitter array memory device having two or more collector electrodes, an extraction electrode, at least one deflector electrode, and at least one electron field emitter is disclosed. The field emitter array memory circuit has bias voltages for collector electrodes, for at least one deflector electrode and for the extraction electrode. In a preferred embodiment of the invention, first and second input signal voltages selectively applied to first and second deflector electrodes selectively switch the flow of electrons emitted from an electron field emitter from a first collector electrode to a second collector electrode and vice versa. A latched memory output is also included. Electron flow from the electron field emitter to one of the first and second collector electrodes is maintained until a signal voltage is applied to a deflector electrode to cause the electron flow to deflect from one collector electrode to the other collector electrode.

Gray, Henry F.

1993-07-01