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1

Identification and significance of accessory minerals from a bituminous coal  

USGS Publications Warehouse

A scanning electron microscope (SEM) has been used to study the in situ accessory minerals in polished blocks and pellets of petrographically analysed samples of the Waynesburg coal (hvb). Individual grains from the low-temperature ash (LTA) of the same coal were also studied. The visual resolution of the SEM permitted the detection of submicron mineral grains, which could then be analysed by the attached energy-dispersive system. Emphasis was placed on the highly reflective grains in the carbominerite bands. Among the most abundant accessory minerals observed were rutile, zircon, and rare-earth-bearing minerals. Small (1-5 ??m) particles of what may be authigenic iron-rich chromite and a nickel silicate form rims on quartz grains. The SEM also permits the observation of grain morphology and mineral intergrowths. These data are useful in determining authigenicity and diagenic alteration. Substances in density splits of LTA include authigenic, detrital, extraterrestrial magnetite, tourmaline, and evaporite (?) minerals, and a fluorine-bearing amphibole. This analytical approach allows the determination of specific sites for many of the trace elements in coals. In the Waynesburg coal, most of the chromium is in the iron-chromium rims, the fluorine is in the amphibole, and the rare-earth elements are in rare-earth-bearing minerals. The ability to relate trace-element data to specific minerals will aid in predicting the behaviour of elements in coal during combustion, liquefaction, gasification, weathering, and leaching processes. This ability also permits insight into the degree of mobility of these elements in coal and provides clues to sedimentological and diagenetic conditions. ?? 1978.

Finkelman, R.B.; Stanton, R.W.

1978-01-01

2

Evolution of the continental crust as recorded in accessory minerals  

NASA Astrophysics Data System (ADS)

Recent developments in precise in situ isotopic analysis by LA-ICPMS and SIMS allow correlating multiple isotopic systems within single grains of accessory minerals such as zircon and monazite. The combined isotope systematics have provided valuable insights into the evolution of the continental crust. Zircon, a common accessory phase in granitoids, can be precisely dated by the U-Pb system. Zircon Lu-Hf isotopic composition is a function of crustal residence time of the magmatic protolith, whereas the O isotopic composition is a sensitive record of reworking of mature sediments such as pelite. An integration of U-Pb, Lu-Hf and O isotopic data for detrital zircons from modern large rivers indicates that: (1) the preserved continental crust dominantly formed between 3.6 and 1.0 Ga, (2) the major mode of crustal development would change during the supercontinent cycle, i.e., the generation of juvenile crust during supercontinent fragmentation versus the stabilization of the generated crust via crustal remelting during supercontinent fragmentation, and (3) reworking of mature sediments increased abruptly at ca. 2.1 Ga. No granitoids are known to have survived since 4.03 Ga. Yet evidence of an even older evolved crust is provided by detrital zircons with ages up to 4.4 Ga from Mt. Narryer and Jack Hills metasedimentary rocks in the Yilgarn Craton, Western Australia. Recently, such Hadean zircons have been found from outside the Yilgarn Craton, indicating that the young Earth had widespread granitoid crust. In addition, another accessory phase, monazite, in the Mt. Narryer and Jack Hills metasedimentary rocks offers an unique opportunity to advance our knowledge of early crustal evolution. Monazite, a light rare earth element phosphate mineral, occurs as an igneous accessory phase particularly in low-Ca granitoids, in contrast to the occurrence of igneous zircon in a wide range of granitoids. U-Pb and Sm-Nd isotope systematic of monazite are analogous to U-Pb and Lu-Hf isotope systematics of zircon in that they define the timing of the crystallization and magmatic protolith formation (model age), respectively. The lack of monazites having >3.6 Ga crystallization ages as well as >4.0 Ga Nd model ages in the Mt. Narryer and Jack Hills metasedimentary rocks suggests that the source rocks of the Hadean detrital zircons are not low-Ca granitoids and therefore contained few monazites. Given that low-Ca granitoid magmas generated mainly by melting of pre-existing mid-lower crust, this finding may indicate minor intra-crustal melting and, by extension, crustal stabilization until ca. 3.6 Ga. This is consistent with the picture portrayed by the detrital zircons from modern rivers. Presumably, the hotter and rheologically weaker lithospheric mantle fostered many small plates and island arcs early in Earth's history, and the young arc crust was efficiently returned to the mantle via subduction. Accordingly, net growth of continental crust was essentially minor in early Earth's history despite high rates of crust generation.

Iizuka, Tsuyoshi

2013-04-01

3

Partition coefficients for rare earth elements in mafic minerals of high silica rhyolites: the importance of accessory mineral inclusions  

Microsoft Academic Search

REE concentrations of mafic mineral separates from high-silica rhyolites measured by INAA are high and variable compared to electron microprobe analyses of the minerals themselves. The mafic phases commonly contain inclusions or have adhering grains of accessory rare earth element (REE)-rich minerals. Optical and electron microscopic observation revealed discrete grains of chevkinite (rare earth titano-silicate) included within clinopyroxenes from the

P MICHAEL

1988-01-01

4

Partition coefficients for rare earth elements in mafic minerals of high silica rhyolites: the importance of accessory mineral inclusions  

SciTech Connect

REE concentrations of mafic mineral separates from high-silica rhyolites measured by INAA are high and variable compared to electron microprobe analyses of the minerals themselves. The mafic phases commonly contain inclusions or have adhering grains of accessory rare earth element (REE)-rich minerals. Optical and electron microscopic observation revealed discrete grains of chevkinite (rare earth titano-silicate) included within clinopyroxenes from the Sierra La Primavera (Mexico) rhyolite, and monazite grains adhering to ortho- and clinopyroxenes from the Bishop Tuff (California). During hand-picking of mineral separates, inclusions are only partly removed. As a result, the magnitude and variability of true mineral-melt partition coefficients for light REE have been overestimated. The true REE partition coefficients of La Primavera and Bishop Tuff pyroxenes obtained by microprobe are only slightly higher than they are in lower-silica rhyolites, and are not as variable as previously thought. The partitioning slope is positive, as in less silicic systems. The relative partitioning behavior of REE in high-silica rhyolites is dominated by crystal-chemical controls and not by liquid structural effects. When a partition coefficient is used for crystallization calculations, adhering phases and inclusions should be retained or the minor phases must be accounted for separately. Alternatively, a bulk distribution coefficient can be calculated using whole rock and glass compositions and the glass mode.

Michael, P.J.

1988-02-01

5

Partition coefficients for rare earth elements in mafic minerals of high silica rhyolites: The importance of accessory mineral inclusions  

NASA Astrophysics Data System (ADS)

REE concentrations of mafic mineral separates from high-silica rhyolites measured by INAA are high and variable compared to electron microprobe analyses of the minerals themselves. The mafic phases commonly contain inclusions or have adhering grains of accessory rare earth element (REE)-rich minerals. Optical and electron microscopic observation revealed discrete grains of chevkinite (rare earth titano-silicate) included within clinopyroxenes from the Sierra La Primavera (Mexico) rhyolite, and monazite grains adhering to ortho- and clinopyroxenes from the Bishop Tuff (California). During hand-picking of mineral separates, inclusions are only partly removed. As a result, the magnitude and variability of true mineral-melt partition coefficients for light REE have been overestimated. The true REE partition coefficients of La Primavera and Bishop Tuff pyroxenes obtained by microprobe are only slightly higher than they are in lower-silica rhyolites, and are not as variable as previously thought. The partitioning slope is positive, as in less silicic systems. The relative partitioning behavior of REE in high-silica rhyolites is dominated by crystal-chemical controls and not by liquid structural effects. When a partition coefficient is used for crystallization calculations, adhering phases and inclusions should be retained or the minor phases must be accounted for separately. Alternatively, a bulk distribution coefficient can be calculated using whole rock and glass compositions and the glass mode.

Michael, Peter J.

1988-02-01

6

Next steps in using accessory minerals to date the evolution of silicic magmas  

NASA Astrophysics Data System (ADS)

Over the past decade, 238U-230Th-206Pb isotopic dating of accessory minerals using the high spatial resolution and sensitivity of ion microprobe analysis has provided new insights into the longevity and thermochemical evolution of silicic magmas, but has also created new questions about the generation, differentiation, and construction of silicic magma chambers. An important conclusion from in situ dating is that accessory minerals such as zircon and allanite in silicic magmas may be 10's to 100's of thousands of years older than their age of eruption. Whether these relatively "old" crystals are derived from long-lived crystal-rich magma reservoirs or inherited due to remelting of frozen intrusions remains a difficult question to answer because long-lived centers of magmatism are characteristically dynamic and are open systems. Nevertheless, not all rhyolites from loci of repeated silicic magmatism carry a dominant "cargo" of antecrystic zircon (or other accessory minerals). Crystal-poor high-silica rhyolites from Coso volcanic field, eastern California, contain a bimodal population of young zircon that yield 238U-230Th ages concordant with their respective late Pleistocene 40Ar/39Ar eruption ages, and a population of Mesozoic zircon that are obvious xenocrysts derived from wallrocks. Rhyolites erupted from La Primavera caldera, Mexico, contain zircon and chevkinite that yield 238U-230Th ages that are within 10's of k.y. of their corresponding eruption ages between ca. 125-85 ka. Antecrysts from intrusions related to older episodes of rhyolitic magmatism appear absent or exceedingly rare. The relatively short timescales between crystallization and eruption suggest that these rhyolites, unlike otherwise similar rhyolites from other systems, were tapped shortly after highly effective differentiation and/or reheating. It is apparent that zircon ages alone are insufficient for resolving the thermochemical and differentiation histories of silicic magmas, and need to be keyed to crystal-scale variations in trace element and isotopic composition, and geothermometry, as well as the compositions and ages of associated major and other accessory phases. Combination of accessory mineral dating and geospeedomety may yield unique information because these methods resolve different aspects of magma evolution over long and short timescales. Zircon crystals from a ca. 260 ka post-collapse rhyolite at Yellowstone caldera yield U-Pb ages that are 10's to 100's of k.y. older than their eruption age, whereas diffusion profiles derived from relatively high temperature rims on sanidine and pyroxenes indicate 10's of k.y. residence since heating and rim growth. These contrasting timescales reflect different aspects of magma evolution. The range of zircon ages is likely to reflect a mixture of recycled crystal residue and renewed crystallization, which is supported by petrographic evidence for inherited plutonic cores in pyroxenes. This combined dating may provide a way to test whether any "old" crystals reflect freeze-thaw thermal cycles in the subvolcanic environment or protracted storage of magma in mushy or melt rich reservoirs.

Vazquez, J. A.

2011-12-01

7

Composition variations of accessory lamprophyllite in Lovozero massif: hidden layering of non-cumulus mineral.  

NASA Astrophysics Data System (ADS)

Composition variations of accessory lamprophyllite in Lovozero massif: hidden layering of non-cumulus mineral. Lovozero massif is a beautiful sample of layered agpaitic intrusion. Rhythmic modal layering is visible in mountainsides and drill-cores. Recently cryptic layering was found in composition of cumulus minerals: loparite (Kogarko et al., 2002), clinopyroxen (Kogarko, Williams, 2005, Zaitsev, Senin 2006) and eudialite (Kogarko, Williams, 2008). We studied chemical variation of lamprophyllite - a principal accessory mineral of eudialite lujavrites and porthyritic lujavrites of Lovozero massif. Three varieties of compositions discovered in rocks of Lovozero massif: Sr-lamprophyllite, contain <0.2 Ba and ~ 0.08 K(f.u), Ba-Sr lamprophyllite, contain 0.4-0.9 Ba and 0.10-0.20 K (f.u) and baritolamprophyllite, contain 1.4 and more f.u. Ba. Sr lamprophyllite is the most abounded. Sometimes it is corroded by the Ba-lamprophyllite. In crossection of eudialite lugavrite complex Fe content in Sr lamprophyllite increase and Ca content - decrease upward. In porphyritic lujavrites Sr lamprophyllite upward increase Mn content whereas Mg, Ca and Fe content decrease. Ba/Sr ratio does not show any tendency in both cases. Experimental study of lamprophyllite-nepheline diagram and melting of lamprophyllite group minerals show that paragenesys nepheline + lamprophyllite might exist below 833°C and lamprophyllite fractionation must increase Ba/Sr ratio in melt (Zaitsev et al., 2013). Lamprophyllite composition evolution inside one rock (namely from lamprophyllite to barytolamprophyllite) is in agreement with experimentally founded. From other hand, independence of Ba/Sr ration in lamprophyllite from the vertical position of sample shows that lamrophyllite wasn't cumulative mineral during crystallization of magma of Lovozero massif. From these data, features of lamprophyllite composition variations strictly locate they place in crystallization history as a crystallized from interstitial melt. Vertical variations of lamprophyllite composition is conform to variations of pyroxene composition: in clinopyroxen of differentiated and eudialite complex Na,Fe and Ti content increase upward and Ca, Mg - decrease (Kogarko Williams, 2005) in porphyritic lujavrites Na, Ti, Mn content increase and Ca, Mn - decrease (Zaitsev, Senin 2006). These patterns can be explained if we assume that at each level of the lamprophyllite crystallized from melt, equilibrated with pyroxene, formed primarily cumulative matrix of rocks. Thus, the composition of lamprophyllite changes systematically upwards because it inherits patterns composition of primary magmatic clinopyroxene.

Zaitsev, Victor; Kogarko, Lia

2014-05-01

8

Diffusion Behavior in Accessory Minerals: Bridging the Gap Between Experimental Data and Inferences From Natural Samples  

NASA Astrophysics Data System (ADS)

The past decade has seen a significant increase in the availability of data on diffusion in accessory minerals obtained through direct characterization of laboratory-induced diffusive uptake profiles by SIMS, RBS or NRA. Recent studies of this type yield diffusion constants that are highly systematic, internally consistent, and time-independent over the range of conditions and durations accessible in the laboratory. Although satisfying to the experimentalists, this consistency does not always carry over to observations of natural rocks: in the real world, isotopic measurements sometimes point to open-system behavior in cases where experimental data preclude isotope mobility by lattice diffusion (the converse may be true in rare cases). The apparent discrepancies between lab and nature do not necessarily call into question the validity of information from either realm. In fact, the differences in viewpoint often arise simply because practitioners on the two sides -- rock analysts on the one hand and experimentalists on the other -- ask different questions. In simple terms, metamorphic petrologists and isotope geochemists ask "What happened to this specific sample?"; experimentalists ask "What would happen to a hypothetical sample, given certain idealized conditions?" The philosophical differences implicit in these two questions can be bridged by better communication, which may lead eventually to better understanding of natural systems. Experimentalists seek to constrain diffusion in an idealized, strain- and defect-free lattice, because this is the "baseline" transport process and the only one that is truly characteristic of a specific atomic structure. Even if a specific accessory mineral grain contains diffusion-enhancing defects, bulk diffusion in that grain is still controlled at some length scale by the properties of the normal lattice. Without knowledge of lattice diffusion from laboratory experiments, progress in understanding bulk diffusion in nature will be limited, as will reconciliation of apparent discrepancies in closure behavior. Recent results from the experimental lab are shedding light on the properties and systematics of intra-crystalline diffusive "fast paths."

Watson, B.

2004-05-01

9

Consistent patterns of rare earth element distribution in accessory minerals from rocks of mafic-ultramafic complexes  

NASA Astrophysics Data System (ADS)

This paper summarizes analytical data accumulated in the world literature and other materials about the regularities of the REE distribution in minerals contained in ultramafic and mafic rocks as accessory phases. These minerals are tentatively divided into two groups. The first includes garnets, zircons, apatites and perovskites, which can accumulate increased amounts of REE in their structure. The second consists of minerals whose structure can accumulate only limited contents of these trace elements. These are chrome-spinels, ilmenites, and micas. These minerals, in respect of REE geochemistry, are studied to a varying degree because of the different levels of accumulations of these elements, different degrees of occurrence in rocks, tiny sizes of their grains and other reasons. The analytical database formed on their basis includes about 600 original analyses. The overwhelming majority of presently available data on REE geochemistry in accessory minerals from ultramafic and mafic rocks have been published only in the recent 15 years. The studies became possible due to the development and introduction of new highly sensible microprobe analyses allowing detection of REE and many other trace elements in minerals grains directly in thin sections. The greatest numbers of these analyses were performed for garnets and zircons, fewer for apatites, and the fewest for chrome-spinels, ilmenites, micas, and perovskites. In general, the regularities of REE distribution in these minerals from ultramafic and mafic rocks are less studied compared to the rock-forming minerals from ultramafic and mafic rocks. Among the analytical methods, which were used to study the REE composition of accessory minerals, the most efficient was the mass-spectrometry with inductively coupled plasma (ICP-MS).

Lesnov, Felix Petrovich

2013-03-01

10

Is the clogging process in Maqarin natural analogue controlled by accessory clay minerals? A reactive transport study with new data.  

NASA Astrophysics Data System (ADS)

The safety of nuclear waste repositories is based on the functionality of multiple natural and engineered barriers for very long time. The barrier system typically combines geochemically different materials that might interact with each other. One example is the long term alteration of sedimentary host rocks by the interaction with high pH pore water from cement materials used for tunnel support, seals and as backfill material. Within this context the Maqarin site in Jordan was investigated since more than 20 years as a natural analogue for rock alterations and pore clogging due to ingress of high pH solutions. In this work we examine the geochemical evolution of Maqarin marl rock in contact with a fracture through which a hyper-alkaline groundwater is circulating. The new reactive transport calculations were performed with the code OpenGeoSys-GEMS and utilize a state-of-the-art geochemical model for cement-clay interactions. The simulations reveal that the precipitation of ettringite, and to a smaller extent the precipitation of calcium-silicate-hydrate (CSH), is responsible for pore clogging in the rock matrix. Clogging of the pore space effectively seals the rock matrix on a centimeter scale after some hundreds of years and suppresses mass transfer of solutes from the fracture into the adjacent rock. In our Maqarin marl rock model typical clay minerals like kaolinite and illite are present in accessory mineral quantities only. A sensitivity analysis reveals that in this setup clay minerals are the main source for Al, necessary for the formation of ettringite-type solid solutions. It is thus the clay mineral content and the dissolution reactions that to a large degree control the spatial and temporal precipitation of ettringites and the associated pore clogging. Recently collected mineralogy and porosity data will be used to re-calibrate the model and to verify our improved findings that overall Maqarin system is controlled by accessory clay minerals.

Shao, H.; Kosakowski, G.; Berner, U.; Kulik, D.; Mäder, U.; Kolditz, O.

2012-04-01

11

Mineral Dissolution and Precipitation due to Carbon Dioxide-Water-Rock Interactions: The Significance of Accessory Minerals in Carbonate Reservoirs (Invited)  

NASA Astrophysics Data System (ADS)

Accessory minerals in carbonate reservoirs, and in the caprocks that seal these reservoirs, can provide insight into multiphase fluid (CO2 + H2O)-rock interactions and the behavior of CO2 that resides in these water-rock systems. Our program integrates field data, hydrothermal experiments, and geochemical modeling to evaluate CO2-water-rock reactions and processes in a variety of carbonate reservoirs in the Rocky Mountain region of the US. These studies provide insights into a wide range of geologic environments, including natural CO2 reservoirs, geologic carbon sequestration, engineered geothermal systems, enhanced oil and gas recovery, and unconventional hydrocarbon resources. One suite of experiments evaluates the Madison Limestone on the Moxa Arch, Southwest Wyoming, a sulfur-rich natural CO2 reservoir. Mineral textures and geochemical features developed in the experiments suggest that carbonate minerals which constitute the natural reservoir will initially dissolve in response to emplacement of CO2. Euhedral, bladed anhydrite concomitantly precipitates in response to injected CO2. Analogous anhydrite is observed in drill core, suggesting that secondary anhydrite in the natural reservoir may be related to emplacement of CO2 into the Madison Limestone. Carbonate minerals ultimately re-precipitate, and anhydrite dissolves, as the rock buffers the acidity and reasserts geochemical control. Another suite of experiments emulates injection of CO2 for enhanced oil recovery in the Desert Creek Limestone (Paradox Formation), Paradox Basin, Southeast Utah. Euhedral iron oxyhydroxides (hematite) precipitate at pH 4.5 to 5 and low Eh (approximately -0.1 V) as a consequence of water-rock reaction. Injection of CO2 decreases pH to approximately 3.5 and increases Eh by approximately 0.1 V, yielding secondary mineralization of euhedral pyrite instead of iron oxyhydroxides. Carbonate minerals also dissolve and ultimately re-precipitate, as determined by experiments in the Madison Limestone, but pyrite will persist and iron oxyhydroxides will not recrystallize.

Kaszuba, J. P.; Marcon, V.; Chopping, C.

2013-12-01

12

Accessory minerals and subduction zone metasomatism: a geochemical comparison of two me??langes (Washington and California, U.S.A.)  

USGS Publications Warehouse

The ability of a subducted slab or subducted sediment to contribute many incompatible trace elements to arc source regions may depend on the stabilities of accessory minerals within these rocks, which can only be studied indirectly. In contrast, the role of accessory minerals in lower-T and -P metasomatic processes within paleo-subduction zones can be studied directly in subduction-zone metamorphic terranes. The Gee Point-Iron Mountain locality of the Shuksan Metamorphic Suite, North Cascades, Washington State, is a high-T me??lange of metamafic blocks in a matrix of meta-ultramafic rocks. This me??lange is similar in geologic setting and petrology to the upper part of an unnamed amphibolite unit of the Catalina Schist, Santa Catalina Island, southern California. Both are interpreted as shear zones between mantle and slab rocks that formed during the early stages of subduction. Some garnet amphibolite blocks from the Gee Point-Iron Mountain locality display trace-element enrichments similar to those in counterparts from the Catalina Schist. Some Catalina blocks are highly enriched in Th, rare-earth elements (REE), the high-field-strength elements Ti, Nb, Ta, Zr and Hf (HFSE), U and Sr compared to mid-ocean ridge basalt (MORB), and to other garnet amphibolite blocks in the same unit. Textural and geochemical data indicate that accessory minerals of metamorphic origin control the enrichment of Th, REE and HFSE in blocks from both areas. The Mg-rich rinds around blocks and the meta-ultramafic matrix from both me??langes are highly enriched in a large number of trace elements compared to harzburgites, dunites and serpentinites. Evidence for recrystallization or formation of accessory minerals in the former rocks suggests that these minerals control some of the trace-element enrichments. Data from the Gee Point and Catalina me??langes suggest that the accessory minerals titanite, rutile, apatite, zircon and REE-rich epidote play a significant role in the enrichment of trace elements in both mafic and ultramafic rocks during subduction-related fluid-rock interaction. Mobilization of incompatible elements, and deposition of such elements in the accessory minerals of mafic and ultramafic rocks may be fairly common in fluid-rich metamorphic environments in subduction zones. ?? 1993.

Sorensen, S.S.; Grossman, J.N.

1993-01-01

13

The evolution of the Peach Spring Tuff magmatic system as revealed by accessory mineral textures and compositions  

NASA Astrophysics Data System (ADS)

The Peach Spring Tuff (PST), a large Miocene ignimbrite located in the southwestern USA, is distinctive in its abundance of U, Th, and REE concentrating accessory minerals (zircon, sphene, allanite, chevkinite). We have examined textures and compositions of these accessory minerals and magnetite, as well as glasses, in pumice clasts and fiamme from the PST outflow and intracaldera by a variety of methods. Textures of crystal populations were assessed qualitatively in thin sections and crystal separates, and quantitatively by differential absorption x-ray tomography (DAT) to obtain quantitative textural information (i.e. crystal size distributions, CSDs). We have also analyzed REE compositions of glasses by LA-ICPMS and zircon and sphene by SHRIMP-RG. Pumice clasts and fiamme from the outflow sheet and intracaldera deposits range in composition and crystal content, from relatively crystal-poor rhyolites to crystal-rich trachytes, with intracaldera fiamme on the less silicic end of this spectrum. REE trends in zircon and sphene grains reveal a simple fractionation history in rhyolites, but MREE enrichment in sphene edges in trachytes suggest final growth from a less evolved melt. Ti-in-zircon and Zr-in-sphene thermometry reveals lower temperature growth at edges of grains from rhyolites (down to ~730 °C), while edges from trachytes record warmer temperatures (up to ~980 °C). Trace element variations and estimated temperatures also suggest that zircon has a more protracted history of growth than other accessory phases. Textures are consistent with the geochemical results. Phenocrysts in rhyolites tend to be euhedral, while those from intracaldera trachytes display resorption features. Zircon and allanite+chevkinite size distributions in outflow pumice clasts and intracaldera fiamme generally display exponential CSDs, consistent with a simple growth and nucleation history. Sphene and magnetite size distributions in outflow samples are generally kinked, with large numbers of small (<100 µm) crystals, suggestive of enhanced nucleation due to rapid decompression. In intracaldera fiamme, the abundance of large sphene crystals (>200 µm) is considerably lower than what is found for the other accessory phases, and sphene CSDs have concave-down shapes for crystals <100 µm. These features are consistent with resorption. The lack of a concave-down section in zircon and allanite+chevkinite CSDs is likely due to comparatively slower growth rates of these phases. These results suggest that the PST was a zoned system affected by a late-stage heating event, which may have triggered eruption, followed by eruptive decompression. Timescales of crystallization calculated from magnetite size distributions suggest this decompression event occurred at most months to a year before eruption. One outflow pumice clast of trachyte composition follows compositional trends of intracaldera trachytes and textural trends of outflow rhyolites, suggesting that these events affected different regions of the chamber to different extents.

Pamukcu, A. S.; Gualda, G. A.; Miller, C. F.; Wooden, J. L.

2010-12-01

14

Uranium-rich accessory minerals in the peraluminous and perphosphorous Belvís de Monroy pluton (Iberian Variscan belt)  

NASA Astrophysics Data System (ADS)

The strongly peraluminous, perphosphorous (<0.85 wt% P2O5) and low-Ca granites from the Belvís de Monroy pluton contain the most U-rich monazite-(Ce) and xenotime known in igneous rocks. Along with these accessory minerals, P-rich zircon occurs, reaching uncommon compositions particularly in the more fractionated units of this zoned pluton. Monazite displays a wide compositional variation of UO2 (<23.13 wt%) and ThO2 (<19.58 wt%), positively correlated with Ca, Si, P, Y and REE. Xenotime shows a high UO2 content (2.37-13.34 wt%) with parallel increases of LREE, Ca and Si. Zircon contains comparatively much lower UO2 (<1.53 wt%) but high P2O5 (<14.91 wt%), Al2O3 (<6.96 wt%), FeO (<2.93 wt%) and CaO (<2.24 wt%) contents. The main mechanism of incorporating large U and Th amounts in studied monazite and U in xenotime is the cheralite-type [(Th,U)4+ + Ca2+ = 2(Y,REE)3+] substitution. Zircon requires several coupled mechanisms to charge balance the P substitution, resulting in non-stoichiometric compositions with low analytical totals. Compositional variations in the studied accessory phases indicate that the substitution mechanisms during crystal growth depend on the availability of non-formula elements. The strong P-rich character of the studied granites increases monazite crystallization, triggering a progressive impoverishment in Th and LREE in the residual melts, and consequently increasing extraordinarily the U content in monazite and xenotime. This is in marked contrast to other peraluminous (I-type or P-poor S-type) granite series. The P-rich and low-Ca peraluminous melt inhibits uraninite crystallization, so contributing to the U availability for monazite and xenotime.

Pérez-Soba, Cecilia; Villaseca, Carlos; Orejana, David; Jeffries, Teresa

2014-05-01

15

Using the potential of accessory minerals: detailed reconstruction of emplacement and crystallization sequence in the Southern Adamello Batholith, N. Italy  

NASA Astrophysics Data System (ADS)

Recent advances in U-Pb zircon geochronology have revealed the complexities of pluton construction, by multiple injections on 10-100 ka to Ma timescales (Michel et al., 2008, Schaltegger et al., 2009). Using high precision U-Pb dating we are potentially able to describe the duration and evolution of magmatic systems, their crystallization and emplacement within the crust. The potential exists to better understand these processes by detailed study of accessory minerals. The trace element and isotopic characteristics of accessory minerals makes them important information carriers for tracking changes in a magma through time. High precision U-Pb dating, using CA-ID-TIMS and employing the ET2535 tracer solution for <0.1% precision and accuracy on 206Pb/238U zircon and titanite dates, and trace element analyses of zircon and titanite, combined with Hf isotope analysis of zircon are presented for the investigation of a complex magmatic system. This study focuses on the Val Fredda Complex (VFC) in the southern tip of the 43 to 32 Ma Adamello batholith, N. Italy. The VFC displays complex relationships among mafic melts that were injected into solidifying felsic magmas. The mafic units crystallized potential autocrystic zircons over a duration of 100 ka, with the majority of zircons co-crystallizing with titanite. The TIMS-TEA method (Schoene et al., 2010) allows us to analyze trace elements on the same volume of zircon/titanite used for U-Pb dating. Mafic zircon and titanite trace elements (e.g., Eu/Eu* and Sr) suggest that these accessory minerals crystallized prior to plagioclase fractionation. Based on experiments (Ulmer et al., 1983) and the trace element data from this study, we suggest that the mafic zircons and titanites do not represent in situ crystallization and therefore are more likely antecrystic. Data from the VFC felsic units show more complex zircon populations, including xenocrystic, antecrystic and autocrystic zircons. These felsic units have apparent autocrystic zircon growth over 100 to 200 ka, with zircons co-crystallizing with titanites during the final 20 to 50 ka. While zircon/chondrite normalized REE patterns do not vary with differentiation, titanite REE patterns reveal changes with differentiation, mostly within the LREEs and Eu/Eu*. Based on trace element fractionation we suggest that felsic zircons and titanites crystallized in situ and represent autocrystic growth. The oldest autocrystic zircon may approximate the injection of the respective magma pulses into the host rock, whereas the youngest zircon and titanite indicate final crystallization at the solidus in a stagnant interstitial melt. We acknowledge funding of FNS in the frame of ProDoc Adamello 4-D. Michel et al., 2008, Geol. 36 : 459-462 ; Schaltegger et al., 2009, Earth Planet. Sci.Lett. 286: 208-218; Schoene et al., 2010, Geochim. Cosmochim. Acta 74, 7144-7159; Ulmer et al., 1983, Mem. Soc. Geol. It. 26 : 171-222

Broderick, C. A.; Schaltegger, U.; Frick, D.; Guenther, D.; Brack, P.

2011-12-01

16

Evolution of the Peach Spring Tuff (Southwest USA) magma body revealed by textures and compositions of accessory minerals  

NASA Astrophysics Data System (ADS)

The 18.5Ma Peach Spring Tuff (PST) is a large (?640 km3) supererupted ignimbrite characterized by 4-20% phenocrysts (primarily sanidine) with an unusual abundance of important REE-incorporating accessory minerals (zircon, sphene, allanite/chevkinite). Recent discovery of the source caldera near Oatman, AZ allows for a comparison of these minerals in the outflow sheet and the caldera. Differential absorption x-ray tomography is used to quantitatively assess textures of Zr- and Ce-rich phases (zircon, sphene and allanite) over a range of resolutions (2.5-17µm/voxel) and crystal sizes. Textural work is complemented by dissolution of small rock chips (~3-5g) in fluoroboric acid and handpicking of zircon and sphene. Electron microprobe, LA-ICPMS, and SHRIMP analysis assesses major and trace element compositions of these minerals. Tomography images reveal that outflow pumice is characterized by euhedral phenocrysts, while intracaldera pumice includes no euhedral sphene. Pumice clasts from the outflow sheet reveal a striking feature: large numbers of zircon and allanite crystals are found included in sphene, with few crystals of these phases found elsewhere. This is puzzling as there is no clear mechanism for sphene to collect zircon and allanite during crystallization. Crystal size distributions (CSD) show that sphene is generally larger than zircon and allanite. Given that Ti diffusion in silicate melts is 2-3 orders of magnitude faster than Zr diffusion, the growth rate of sphene is expected to be significantly faster than that of zircon. Consequently, the similar CSD slopes observed for zircon and sphene imply a much more protracted crystallization history for zircon. Zr-in-sphene temperatures recorded in outflow and intracaldera pumice reveal modest temperatures (720-810 C). Ti-in-zircon temperatures in intracaldera pumice reveal a much broader crystallization interval (810-950 C), with maximum temperatures notably higher that those recorded in sphene. Maximum Ti-in-zircon temperatures are recorded in thick crystal rims, suggesting a late-stage input of heat into the PST system. Mafic enclaves found in intracaldera rocks suggest an injection of mafic magma into the system was the source of this heat. Lack of high temperature rims on sphene may be due to resorption of sphene during heating, which is in agreement with the lack of euhedral sphene crystals in intracaldera pumice.

Pamukcu, A.; Gualda, G. A.; Miller, C. F.; Wooden, J.; Ferguson, C.

2009-12-01

17

PAC investigation on the Zr-rich region of the PZT phase diagram  

NASA Astrophysics Data System (ADS)

Previous studies using perturbed angular correlation (PAC) spectroscopy in the PbZr 1-xTi xO 3 (PZT) family of compounds show that whereas PbZrO 3 is characterized by a single probes site with a very well-defined hyperfine interaction, in PZT with x?0.1 the probes occupy two distributed sites. In this work, we investigate the Zr-rich region of the PZT phase diagram from x=0.02 up to x=0.08 using PAC in order to correlate the hyperfine parameters with the antiferroelectric-ferroelectric phase transition reported to occur at x=0.05. Two static electric quadrupole interactions, one of them fairly distributed, were detected over the whole Ti concentration range, and an abrupt change in the hyperfine parameters for 0.02< x<0.04 is observed. The behaviour of these parameters and the existence of two probe sites is discussed.

Alonso, R. E.; Ayala, A. P.; López García, A. R.; Eiras, J. A.

2007-02-01

18

Dating widespread tephras and their proximal equivalents by SIMS analysis of accessory mineral rims and by argon geochronology (Invited)  

NASA Astrophysics Data System (ADS)

Dating the deposition of regionally distributed ash beds whose vent-proximal equivalents are unknown, eroded, or buried by the products of younger eruptions may be challenging because the potassium-rich minerals necessary for high-precision argon geochronology are absent, too small, or altered. Where correlative proximal deposits can be identified, juvenile pyroclasts can be sampled to date their coarse-grained crystals. Zircon is the premier mineral for dating via the U-Pb system, and is commonly present in distal ash beds produced by eruption of silicic magma. However, zircon often yields ages older than eruption due to protracted crystallization in subvolcanic magma chambers, recycling of antecrysts, and/or inheritance. High-spatial resolution sampling of unpolished crystal faces on indium-mounted zircon and other accessory minerals via SIMS (ion microprobe) analysis provides U-Pb or 238U-230Th ages for the final few micrometers of rim crystallization, and represents an alternative technique for avoiding, or at least minimizing, the aforementioned problems. To explore the utility of this technique for dating distal tephras erupted from Quaternary volcanoes in the western United States, we performed U-Pb and U-Th dating of unpolished rims on zircon and allanite in tandem with sanidine 40Ar/39Ar dating for rhyolitic ash beds and proximal pyroclastic deposits or lava associated with a variety of Pleistocene eruptions. Tephra beds generated by late Pleistocene eruptions from Mono Craters, east-central California, are distributed over a significant area of the Great Basin, but their ages have been difficult to resolve due to contamination by sanidine xenocrysts and accidental lithic clasts. Rims on zircon and allanite from a regionally distributed tephra and its correlative rhyolite dome in the Mono Craters both yield U-Th isochron ages of ca. 21 ka, which are indistinguishable from the 40Ar/39Ar age for sanidine from the dome. A distinct tephra that erupted from Mono Craters during a pronounced geomagnetic excursion yields a zircon-allanite rim isochron age of ca. 42 ka [1], which matches the independent 40Ar/39Ar [2] and astronomical [3] age for the Laschamp Excursion. U-Pb dating of rims on zircon from proximal and distal Lava Creek Tuff, which erupted during the formation of Yellowstone caldera and blanketed much of the western United States, yields crystallization ages that match the 40Ar/39Ar age for associated sanidine. Postcaldera rhyolites that erupted within Yellowstone caldera between ca. 260 ka and ca. 70 ka exhibit similar concordance between U-Pb or U-Th ages for rims and their respective 40Ar/39Ar ages for sanidine, although variable amounts of crystal recycling are observed. Our results for various rhyolites indicate that high-spatial resolution dating of unpolished rims from zircon × allanite can effectively resolve eruption ages for distal tephras that elude dating by other techniques because of crystal recycling. [1] Vazquez and Lidzbarski, 2012, EPSL 357-358: 54, [2] Singer et al., 2009, EPSL 286: 80, [3] Channell et al., 2012, G-cubed 13: 1

Vazquez, J. A.; Calvert, A. T.; Matthews, N. E.; Till, C.; Stelten, M. E.; Cooper, K. M.; Marcaida, M.; Lidzbarski, M. I.; Coble, M. A.

2013-12-01

19

A new method fingerprinting magmatic processes using combined U/Pb ID-TIMS geochronology and accessory mineral geochemistry  

NASA Astrophysics Data System (ADS)

Zircon is commonly used as a recorder of magmatic processes because of its utility in geochronology and ability to retain primary growth information at prolonged magmatic conditions. Recent applications of U-Pb ID-TIMS geochronology have shown that precision on dates of single zircons are often far smaller than the time-scales of magmatic systems. The result is that dates on such grains record various processes occurring over an interval of time during the production, mobilisation, and emplacement of magmas. Combining age information with geochemical data from the same zircons has proved a useful tool, but thus far has been restricted to low-precision in situ dating techniques. Furthermore, these techniques have been unable to combine age data with trace element geochemistry on the same volume of zircon. We have developed a new technique that combines high-precision ID-TIMS dating with geochemical characterization on the exact same material. U and Pb are commonly separated from the other chemical constituents by ion exchange chemistry during sample preparation. We retain this fraction and analyse it using solution nebulization ICP-SFMS with matrix-matched external liquid calibration. We measured elements such as Zr, Hf, Y, Sc, and the REE, which are present in solution at between 10 and >105 ppt; Hf isotopes are subsequently measured on the same solution. Data obtained using this approach allow us to distinguish between models for melt generation, transport, and assembly of the ca. 40 Ma composite mafic to felsic Re di Castello pluton, Adamello batholith, northern Italy. Coupled with age uncertainties on single zircons as low as 10,000 years, zircon geochemistry preserves a rich record of fractional crystallization, crustal assimilation and magma mixing over timescales of <20,000 to >400,000 years. These data can also be used to distinguish between auto-, xeno-, and antecrystic zircon. Combined with field observation and U-Pb sphene thermochronology, we show that this pluton was assembled through the incremental intrusion of small magmatic pulses in the upper crust following the storage and modification of larger magma batches at depth. Application of our method to a wider range of U-Pb accessory minerals combined with analytical improvements will widen the breadth of its application and contribute to our understanding of magmatic processes as a function of time.

Schoene, B.; Schaltegger, U.; Latkoczy, C.; Günther, D.

2009-12-01

20

Anton R. Chakhmouradian Roger H. Mitchell The mineralogy of Ba-and Zr-rich alkaline pegmatites  

E-print Network

Anton R. Chakhmouradian á Roger H. Mitchell The mineralogy of Ba- and Zr-rich alkaline pegmatites pegmatites Received: 20 July 2000 / Accepted: 31 October 2001 / Published online: 9 January 2002 � Springer-Verlag 2002 Abstract At Gordon Butte (Crazy Mountains, Mon- tana), agpaitic nepheline±syenite pegmatites

Chakhmouradian, Anton

21

Heterogeneous nucleation of ?-type precipitates on nanoscale Zr-rich particles in a Mg-6Zn-0.5Cu-0.6Zr alloy  

PubMed Central

Zirconium (Zr) is an important alloying element to Mg-Zn-based alloy system. In this paper, we report the formation of the ?-type precipitates on the nanoscale Zr-rich particles in a Mg-6Zn-0.5Cu-0.6Zr alloy during ageing at 180°C. Scanning transmission electron microscopy examinations revealed that the nanoscale Zr-rich [0001]? rods/laths are dominant in the Zr-rich core regions of the as-quenched sample after a solution treatment at 430°C. More significantly, these Zr-rich particles served as favourable sites for heterogeneous nucleation of the Zn-rich ?-type phase during subsequent isothermal ageing at 180°C. This research provides a potential route to engineer precipitate microstructure for better strengthening effect in the Zr-containing Mg alloys. PMID:22682092

2012-01-01

22

Redistribution of rare earth elements, thorium, and uranium over accessory minerals in the course of amphibolite to granulite facies metamorphism: The role of apatite and monazite in orthogneisses from southwestern Norway  

Microsoft Academic Search

The amphibolite to granulite facies transition has been studied in a high-K calc-alkaline, hornblende-biotite, K-feldspar megacrystic augen gneiss series from the Rogaland-Vest-Agder (Rog-VA) sector of the Sveconorwegian province (southwest Norway). Hornblende begins to break down mainly to clinopyroxene at the Cpx-in isograd and biotite mainly to orthopyroxene at the Opx-in isograd (abbreviations for minerals following Kretz, 1983). The magmatic accessory

Bernard Bingen; Daniel Demaiffe; Jan Hertogen

1996-01-01

23

The Fast and the Slow, the High and the Low - Investigations of Pb and He Diffusion in Accessory Minerals and Implications for Geochronology (Invited)  

NASA Astrophysics Data System (ADS)

We have measured Pb diffusion in a range of accessory minerals over the past few decades, and have recently begun investigations of helium diffusion with a study of diffusion in apatite and zircon (Cherniak et al., 2009). In this work, we obtained the following Arrhenius relation for He diffusion in Durango fluorapatite: D = 2.10x10-6 exp( - 117 ± 6 kJ mol-1/RT) m2sec-1 In contrast to apatite, He diffusion in zircon exhibits marked anisotropy, with diffusion normal to c about two orders of magnitude slower than diffusion parallel to c. For He diffusion in zircon we determined these Arrhenius relations for diffusion normal and parallel to c: D?c = 2.3x10-7 exp(-146± 11 kJ mol-1/RT) 2sec-1 D?c = 1.7x10-5 exp(-148± 17 kJ mol-1/RT)m2sec-1 As a continuation of these efforts, we have characterized diffusion of helium in natural monazite and titanite. Polished slabs of these minerals were implanted with 100 keV 3He at a dose of 5x1015 3He/cm2. Implanted monazite and titanite were annealed in Pt capsules in 1-atm furnaces for times ranging from 15 minutes to 6 weeks at temperatures from 252-600°C. 3He distributions in the minerals were measured with Nuclear Reaction Analysis using the reaction 3He(d,p)4He. For diffusion normal to (100) we obtain the following Arrhenius relation for He diffusion in monazite: D = 1.6x10-7 exp(-150 ± 11 kJ mol-1/RT) m2sec-1. Over the investigated temperature range, diffusivities are similar to those measured by Boyce et al. (2005), and fall between the values measured by Farley (2007) for diffusion in synthetic CePO4, NdPO4, SmPO4, and GdPO4. He diffusion in monazite is similar to He diffusion in zircon normal to c, and about 4 orders of magnitude slower than He diffusion in apatite (Cherniak et al., 2009). For diffusion in titanite, we obtain the Arrhenius relation: D = 8.7x10-7 exp(-143 ± 7 kJ mol-1/RT) m2sec-1. He diffusivities for titanites from two different localities are comparable, and similar to those measured in the outgassing experiments of Shuster et al. (2003). He diffusion in titanite is intermediate between He diffusion parallel and normal to c in zircon, and about 3 orders of magnitude slower than He diffusion in apatite (Cherniak et al., 2009). In this presentation, we will consider these findings in light of other determinations of He diffusion and Pb diffusion in various accessory phases, and discuss the implications of these diffusivities in interpreting thermal histories. Since He diffusion is many orders of magnitude faster than Pb diffusion, geologic conditions under which these species will be retained or lost span a broad and disparate range, with applications from surface processes to those deep in the crust. Boyce, J.W., Hodges, K.V., Olszewski, W.J., Jercinovic, M.J.(2005) G3, 6, Q12004; Cherniak, D.J., Watson, E.B., Thomas, J.B. (2009) Chem. Geol. (submitted); Farley, K.A. (2007) GCA 71, 4015-4024, Shuster, D.L., Farley, K.A., Sisterson, J.M., Burnett, D.S.(2003) EPSL 217, 19-32.

Cherniak, D. J.; Watson, E. B.

2009-12-01

24

Tracking hydrothermal alteration and mineralization in rock-forming and accessory minerals from the Lyon Mountain Granite and related iron oxide apatite (IOA) ores from the Adirondack Mountains, New York State  

NASA Astrophysics Data System (ADS)

The Lyon Mountain granite (LMG) is located in the northeastern Adirondack Mountains in New York State and hosts several low-titanium iron oxide apatite (IOA) ore deposits. The ores are predominately hosted by perthite bearing granite, which has been extensively altered to albite and microcline granite by Na and K metasomatism. This alteration results in several distinct groups of rocks that are dominated by either K or Na addition and a group composed of mixed Na and K addition. The different groups of altered perthite also lie on a trend suggestive of addition of Fe to each, consistent with a secondary mineralization origin. Previous work showed that the host rocks of the IOA ores have zircon with ~1150 Ma cores and 1060-1050 Ma rims and whole grains. This study aims to further constrain the timing of LMG emplacement, subsequent hydrothermal alteration, and Fe mineralization through geochemical analysis of the major, minor, and accessory phases and geochronology of accessory phases. SIMS analyses of zircon from several of the IOA ores reveal at least two periods of growth after LMG magmatism, at 1039 +/- 4.4 Ma and 1016 +/- 7 Ma to 1000 +/- 9 Ma. In situ EMPA and LA-ICPMS trace element analyses of the zircon rims and cores reveal that in two samples the zircon rims are enriched in rare earth elements (REE) compared to their cores, potentially pointing to a hydrothermal origin. Apatite has unusually high REE and Y concentrations (some total REE2O3 > 20 wt. % oxide and up to 8 wt. % oxide Y2O3), as does titanite, which allowed for the in situ analysis of Sm-Nd in apatite and titanite by LA-MC-ICP-MS. Initial Nd isotopic composition of both ore and host rock apatite and host rock titanite are consistent with published Adirondack initial Nd whole rock data, suggesting a local source for REE in these ores. EMPA and LA-ICPMS trace-element analyses of the major rock-forming minerals indicate that the feldspar have undergone Na-metasomatism and are depleted in REEs, perhaps signifying the "local source" and the mechanism of the REE enrichment in the LMG apatite in the IOA ores and host rocks. In contrast, the minor- and trace-element compositions of the other major rock-forming minerals (e.g., clinopyroxene and fayalite) as well as the zircon, and fluorite in the LMG have average igneous granitic trace- and minor-element compositions. To better understand the timing and origin of these post ~1050 Ma events, U-Pb ID-TIMS dating of apatite and titanite, and in situ LA-MC-ICPMS Sm-Nd analysis were done on the ore and host rock samples. Apatite dates range from 1050 to 850 Ma and titanite dates range from ~1015 to 970 Ma. There is significant age variation within samples and within grains. Titanite does not have sufficient spread for accurate Sm-Nd isochron dating and two ore-apatite samples have homogenous initial Nd isotopic and Sm-Nd elemental ratios, precluding calculation of Sm-Nd dates. A third ore sample shows a large spread in Sm-Nd and yields a Sm-Nd isochron date of ~850 Ma, in close agreement with U-Pb apatite dates. The Sm-Nd isochron and U-Pb apatite dates may reflect cooling recorded in these minerals or a younger hydrothermal mineralization event.

Buchanan, A.; Hanchar, J. M.; Steele-MacInnis, M. J.; Crowley, J. L.; Valley, P. M.; Fisher, C. M.; Fedo, C.; Piccoli, P. M.; Fournelle, J.

2012-12-01

25

Rare-element granitic pegmatite of Miocene age emplaced in UHP rocks from Visole, Pohorje Mountains (Eastern Alps, Slovenia): accessory minerals, monazite and uraninite chemical dating  

NASA Astrophysics Data System (ADS)

The granitic pegmatite dike intruded the Cretaceous UHP rocks at Visole, near Slovenska Bistrica, in the Pohorje Mountains (Slovenia). The rock consists mainly of K-feldspar, albite and quartz, subordinate muscovite and biotite, while the accessory minerals include spessartine-almandine, zircon, ferrocolumbite, fluorapatite, monazite- (Ce), uraninite, and magnetite. Compositions of garnet (Sps48-49Alm45-46Grs + And3-4 Prp1.5-2), metamict zircon with 3.5 to 7.8 wt. % HfO2 [atom. 100Hf/(Hf + Zr) = 3.3-7.7] and ferrocolumbite [atom. Mn/(Mn + Fe) = 0.27-0.43, Ta/(Ta + Nb) = 0.03-0.46] indicate a relatively low to medium degree of magmatic fractionation, characteristic of the muscovite - rare-element class or beryl-columbite subtype of the rare-element class pegmatites. Monazite-(Ce) reveals elevated Th and U contents (?11 wt. % ThO2, ?5 wt. % UO2). The monazite-garnet geothermometer shows a possible precipitation temperature of ~495 ± 30 °C at P~4 to 5 kbar. Chemical U-Th-Pb dating of the monazite yielded a Miocene age (17.2 ± 1.8 Ma), whereas uraninite gave a younger (~14 Ma) age. These ages are comtemporaneous with the main crystallization and emplacement of the Pohorje pluton and adjacent volcanic rocks (20 to 15 Ma), providing the first documented evidence of Neogene granitic pegmatites in the Eastern Alps. Consequently, the Visole pegmatite belongs to the youngest rare-element granitic pegmatite populations in Europe, together with the Paleogene pegmatite occurrences along the Periadriatic (Insubric) Fault System in the Alps and in the Rhodope Massif, as well as the Late Miocene to Pliocene pegmatites in the Tuscany magmatic province (mainly on the Island of Elba).

Uher, Pavel; Janák, Marian; Kone?ný, Patrik; Vrabec, Mirijam

2014-04-01

26

Matching Accessories  

NSDL National Science Digital Library

Heterodimerization enhances the complexity of ligand recognition and diversity of signaling responses of heterotrimeric guanine nucleotide-binding protein-coupled receptors (GPCRs). Many accessory proteins (for ion channels or GPCRs) appear to associate with their partners relatively early in the process whereby proteins are transported to the cell surface; their roles in modulating function may have evolved out of simple proximity to a protein that once upon a time they either facilitated or accompanied through the maturation process. The receptor activity-modifying proteins (RAMPs) are a family of single-transmembrane accessory proteins that heterodimerize with GPCRs and, thereby, allow individual GPCRs to recognize multiple ligands and to activate various signaling pathways in response to ligand binding. The M10 family of major histocompatibility complex (MHC) class 1b proteins has recently been shown to associate with murine vomeronasal V2R receptors, as well as to escort them to the cell surface. The exact role of M10 in modulating V2R function (or vice versa) remains to be determined.

Steven M. Foord (Stevenage; Target Bioinformatics, GlaxoSmithKline Medicine Research Centre REV)

2003-07-08

27

Minerals  

MedlinePLUS

Minerals are important for your body to stay healthy. Your body uses minerals for many different jobs, including building bones, making ... regulating your heartbeat. There are two kinds of minerals: macrominerals and trace minerals. Macrominerals are minerals your ...

28

Investigation on F R(LT)– F R(HT) phase transition and pyroelectric properties of porous Zr-rich lead zirconate titante ceramics  

Microsoft Academic Search

The FR(LT)–FR(HT) phase transition and pyroelectric properties of porous Zr-rich lead zirconate ceramics were investigated. There was a relatively slight change of dielectric constant and a maximum peak of pyroelectric coefficient during FR(LT)–FR(HT) phase transition. The FR(LT)–FR(HT) and FR(HT)–PC phase transition temperature changed slightly with an increase in porosity The dielectric constant and pyroelectric coefficient at FR(LT)–FR(HT) phase transition temperature

Tao Zeng; Genshui Wang; Xianlin Dong; Hongliang He; Xuefeng Chen

2007-01-01

29

Minerals  

MedlinePLUS

... Aren't minerals something you find in the earth, like iron and quartz? Well, yes, but small ... how much of these minerals you need each day. Trace minerals includes iron, manganese, copper, iodine, zinc, ...

30

Minerals  

NSDL National Science Digital Library

This site provides an in-depth look at mineral properties and identification. An alphabetical listing of common minerals allows the user to see a picture and view physical properties of the particular mineral. Properties of minerals are explained, including cleavage, hardness, crystal form, and luster. There are also downloadable labs for crystal models and mineral data sheets. Dichotomous and hardness keys are given for easier mineral identification.

2007-12-12

31

Minerals  

NSDL National Science Digital Library

This interactive lesson on minerals starts with a definition of minerals and compares crystalline and amorphous minerals. The composition is discussed and a chart shows the relative amounts of elements in minerals. Next, there is a discussion of the characteristics by which minerals are identified including luster, color, streak, hardness, and cleavage and fracture along with special properties such as magnetism. The characteristics of calcite, talc, hematite, magnetite, and galena are then observed.

32

Minerals  

NSDL National Science Digital Library

This slide show provides students with basic information on mineralogy. It explains how the term "mineral" is defined, the properties that are used to identify minerals, their importance in daily life, and some general facts. For each identifying property, an example mineral and photograph are provided. Addresses to websites with additional information are also included.

Michael Passow

33

minerals  

NASA Astrophysics Data System (ADS)

Polarized electronic absorption spectra of colourless chalcocyanite, CuSO4, have been measured using microscope-spectrometric techniques. The spectra are characterized by a structured and clearly polarized band system in the near-infrared spectral range with components centred at 11,720, 10,545, 9,100, and 7,320 cm-1, which have been assigned to crystal field d- d transitions of Cu2+ cations in pseudo-tetragonally elongated CuO6 polyhedra with point symmetry C i (). The polarization behaviour is interpreted based on a D 2( C 2?) pseudo-symmetry. Crystal field calculations were performed for the actual triclinic point symmetry by applying the Superposition Model of crystal fields, as well as in terms of a `classic' pseudo-tetragonal crystal field approach yielding the parameters Dq (eq) = 910, Dt = 395, and Ds = 1,336 cm-1, corresponding to a cubically averaged Dq cub = 679 cm-1. A comparative survey on crystal fields in Cu2+ minerals shows that the low overall crystal field strength in chalcocyanite, combined with a comparatively weak pseudo-tetragonal splitting of energy levels, is responsible for its unique colourless appearance among oxygen-based Cu2+ minerals. The weak crystal field in CuSO4 can be related to the lower position of the SO4 2- anion compared to, e.g. the H2O molecule in the spectrochemical series of ligands.

Wildner, Manfred; Giester, Gerald; Kersten, Monika; Langer, Klaus

2014-10-01

34

Subunits of flagellar accessory tubules.  

PubMed

Many sperm flagella contain a central pair of singlet tubules surrounded by nine doublet tubules. Insect sperm flagella, however, usually contain in addition to the typical 9+2 arrangement of tubules, an additional row of nine singlet tubules which are called accessory tubules. Each of these accessory tubules in the Colorado potato beetle (Leptinotarsa decemlineata (Say)) contains a single central prototubule surrounded by an array of 15 or 16 peripheral prototubules. The number of prototubules in the accessory tubules of Leptinotarsa decemlineata was determined with an electron microscope and image details were reinforced by the rotation techniques of Markham. PMID:18631486

Shay, J W; Dobson, W J; Simmons, E E; Biesele, J J; Breland, O P

1969-01-01

35

14 CFR 23.1163 - Powerplant accessories.  

Code of Federal Regulations, 2011 CFR

...2) of this section, be sealed to prevent contamination of the engine oil system and the accessory system. ...mounting; and (3) Be sealed to prevent contamination of the gearbox oil system and the accessory system....

2011-01-01

36

14 CFR 23.1163 - Powerplant accessories.  

Code of Federal Regulations, 2013 CFR

...2) of this section, be sealed to prevent contamination of the engine oil system and the accessory system. ...mounting; and (3) Be sealed to prevent contamination of the gearbox oil system and the accessory system....

2013-01-01

37

14 CFR 23.1163 - Powerplant accessories.  

Code of Federal Regulations, 2010 CFR

...2) of this section, be sealed to prevent contamination of the engine oil system and the accessory system. ...mounting; and (3) Be sealed to prevent contamination of the gearbox oil system and the accessory system....

2010-01-01

38

14 CFR 23.1163 - Powerplant accessories.  

Code of Federal Regulations, 2012 CFR

...2) of this section, be sealed to prevent contamination of the engine oil system and the accessory system. ...mounting; and (3) Be sealed to prevent contamination of the gearbox oil system and the accessory system....

2012-01-01

39

14 CFR 23.1163 - Powerplant accessories.  

Code of Federal Regulations, 2014 CFR

...2) of this section, be sealed to prevent contamination of the engine oil system and the accessory system. ...mounting; and (3) Be sealed to prevent contamination of the gearbox oil system and the accessory system....

2014-01-01

40

21 CFR 890.3910 - Wheelchair accessory.  

Code of Federal Regulations, 2012 CFR

...ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES PHYSICAL MEDICINE DEVICES Physical Medicine Prosthetic Devices § 890.3910 Wheelchair accessory. (a) Identification. A wheelchair accessory is a device...

2012-04-01

41

21 CFR 890.3910 - Wheelchair accessory.  

Code of Federal Regulations, 2011 CFR

...ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES PHYSICAL MEDICINE DEVICES Physical Medicine Prosthetic Devices § 890.3910 Wheelchair accessory. (a) Identification. A wheelchair accessory is a device...

2011-04-01

42

47 CFR 15.27 - Special accessories.  

Code of Federal Regulations, 2010 CFR

...2010-10-01 2010-10-01 false Special accessories. 15.27 Section 15.27 Telecommunication...DEVICES General § 15.27 Special accessories. (a) Equipment marketed...equipment is marketed. Where special accessories, such as shielded cables...

2010-10-01

43

Teaching Techniques for Accessory Percussion  

ERIC Educational Resources Information Center

Everyone is familiar with the main percussion instruments of the contemporary orchestra: bass drum, snare drum, suspended cymbal, vibraphone, and timpani. But as source material broadens, so do the demands placed on the percussion section. Accessory, or auxiliary percussion, can make the difference between a typical rendition of a well-known piece…

Micallef, Ken

2007-01-01

44

news update Fashion Accessory Design  

E-print Network

news update let's talk Fashion Accessory Design Fashion Design Fashion Knitwear Design and Knitted in the fashion and textile industry. Through Texprint, Alice will receive mentoring and benefit from being and fashion fabrics. Following an exhibition in London, Alice will have her own stand at the Texprint Village

Evans, Paul

45

Modification of accessory molecule signaling  

Microsoft Academic Search

The concept of costimulation, the requirement for an independent accessory cellular activation signal that supplements the\\u000a signal delivered to a lymphocyte by antigen, has been a focal point of progress in understanding the regulation of the immune\\u000a system. While considerable attention has been directed to new developments related to the activation of cells of the innate\\u000a immune system through Toll-like

Mary K. Crow; Springer Semin

2006-01-01

46

21 CFR 878.4960 - Operating tables and accessories and operating chairs and accessories.  

Code of Federal Regulations, 2014 CFR

... FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GENERAL AND PLASTIC SURGERY DEVICES Surgical Devices § 878.4960 Operating tables and accessories and operating chairs and accessories....

2014-04-01

47

21 CFR 878.4960 - Operating tables and accessories and operating chairs and accessories.  

Code of Federal Regulations, 2012 CFR

... FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GENERAL AND PLASTIC SURGERY DEVICES Surgical Devices § 878.4960 Operating tables and accessories and operating chairs and accessories....

2012-04-01

48

21 CFR 878.4960 - Operating tables and accessories and operating chairs and accessories.  

Code of Federal Regulations, 2013 CFR

... FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GENERAL AND PLASTIC SURGERY DEVICES Surgical Devices § 878.4960 Operating tables and accessories and operating chairs and accessories....

2013-04-01

49

21 CFR 878.4960 - Operating tables and accessories and operating chairs and accessories.  

Code of Federal Regulations, 2011 CFR

... FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GENERAL AND PLASTIC SURGERY DEVICES Surgical Devices § 878.4960 Operating tables and accessories and operating chairs and accessories....

2011-04-01

50

21 CFR 890.5925 - Traction accessory.  

Code of Federal Regulations, 2011 CFR

...AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES PHYSICAL MEDICINE DEVICES Physical Medicine Therapeutic Devices § 890.5925 Traction accessory. (a) Identification. A...

2011-04-01

51

21 CFR 890.3910 - Wheelchair accessory.  

Code of Federal Regulations, 2014 CFR

...AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES PHYSICAL MEDICINE DEVICES Physical Medicine Prosthetic Devices § 890.3910 Wheelchair accessory. (a) Identification. A...

2014-04-01

52

21 CFR 890.5925 - Traction accessory.  

Code of Federal Regulations, 2013 CFR

...AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES PHYSICAL MEDICINE DEVICES Physical Medicine Therapeutic Devices § 890.5925 Traction accessory. (a) Identification. A...

2013-04-01

53

21 CFR 890.3910 - Wheelchair accessory.  

Code of Federal Regulations, 2010 CFR

...AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES PHYSICAL MEDICINE DEVICES Physical Medicine Prosthetic Devices § 890.3910 Wheelchair accessory. (a) Identification. A...

2010-04-01

54

21 CFR 890.5925 - Traction accessory.  

Code of Federal Regulations, 2014 CFR

...AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES PHYSICAL MEDICINE DEVICES Physical Medicine Therapeutic Devices § 890.5925 Traction accessory. (a) Identification. A...

2014-04-01

55

21 CFR 890.5925 - Traction accessory.  

Code of Federal Regulations, 2010 CFR

...AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES PHYSICAL MEDICINE DEVICES Physical Medicine Therapeutic Devices § 890.5925 Traction accessory. (a) Identification. A...

2010-04-01

56

21 CFR 890.5925 - Traction accessory.  

Code of Federal Regulations, 2012 CFR

...AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES PHYSICAL MEDICINE DEVICES Physical Medicine Therapeutic Devices § 890.5925 Traction accessory. (a) Identification. A...

2012-04-01

57

Engine starter and accessory drive system  

SciTech Connect

An engine starter and accessory drive system is described which consists of: an accessory drive means; a planetary gearset having a sun gear driveably connected to the accessory drive means, a ring gear, a carrier and planet pinions rotatably mounted on the carrier, fixed to the engine crankshaft, meshing with the sun gear and with the ring gear; means for holding the ring gear against rotation; and a starter motor and first clutch means for providing a one-way driving connection between the motor and the accessory drive means.

Stockton, T.R.

1986-10-07

58

Advanced Accessory Power Supply Topologies  

SciTech Connect

This Cooperative Research and Development Agreement (CRADA) began December 8, 2000 and ended September 30, 2009. The total funding provided by the Participant (General Motors Advanced Technology Vehicles [GM]) during the course of the CRADA totaled $1.2M enabling the Contractor (UT-Battelle, LLC [Oak Ridge National Laboratory, a.k.a. ORNL]) to contribute significantly to the joint project. The initial task was to work with GM on the feasibility of developing their conceptual approach of modifying major components of the existing traction inverter/drive to develop low cost, robust, accessory power. Two alternate methods for implementation were suggested by ORNL and both were proven successful through simulations and then extensive testing of prototypes designed and fabricated during the project. This validated the GM overall concept. Moreover, three joint U.S. patents were issued and subsequently licensed by GM. After successfully fulfilling the initial objective, the direction and duration of the CRADA was modified and GM provided funding for two additional tasks. The first new task was to provide the basic development for implementing a cascaded inverter technology into hybrid vehicles (including plug-in hybrid, fuel cell, and electric). The second new task was to continue the basic development for implementing inverter and converter topologies and new technology assessments for hybrid vehicle applications. Additionally, this task was to address the use of high temperature components in drive systems. Under this CRADA, ORNL conducted further research based on GM’s idea of using the motor magnetic core and windings to produce bidirectional accessory power supply that is nongalvanically coupled to the terminals of the high voltage dc-link battery of hybrid vehicles. In order not to interfere with the motor’s torque, ORNL suggested to use the zero-sequence, highfrequency harmonics carried by the main fundamental motor current for producing the accessory power. Two studies were conducted at ORNL. One was to put an additional winding in the motor slots to magnetically link with the high frequency of the controllable zero-sequence stator currents that do not produce any zero-sequence harmonic torques. The second approach was to utilize the corners of the square stator punching for the high-frequency transformers of the dc/dc inverter. Both approaches were successful. This CRADA validated the feasibility of GM’s desire to use the motor’s magnetic core and windings to produce bidirectional accessory power supply. Three joint U.S. patents with GM were issued to ORNL and GM by the U.S. Patent Office for the research results produced by this CRADA.

Marlino, L.D.

2010-06-15

59

21 CFR 872.3980 - Endosseous dental implant accessories.  

Code of Federal Regulations, 2014 CFR

... Endosseous dental implant accessories. 872...DEVICES DENTAL DEVICES Prosthetic Devices § 872.3980 Endosseous dental implant accessories. (a... Endosseous dental implant accessories are manually...of endosseous dental implants and abutments,...

2014-04-01

60

21 CFR 872.3980 - Endosseous dental implant accessories.  

Code of Federal Regulations, 2012 CFR

... Endosseous dental implant accessories. 872...DEVICES DENTAL DEVICES Prosthetic Devices § 872.3980 Endosseous dental implant accessories. (a... Endosseous dental implant accessories are manually...of endosseous dental implants and abutments,...

2012-04-01

61

21 CFR 872.3980 - Endosseous dental implant accessories.  

Code of Federal Regulations, 2010 CFR

... Endosseous dental implant accessories. 872...DEVICES DENTAL DEVICES Prosthetic Devices § 872.3980 Endosseous dental implant accessories. (a... Endosseous dental implant accessories are manually...of endosseous dental implants and abutments,...

2010-04-01

62

21 CFR 872.6300 - Rubber dam and accessories.  

Code of Federal Regulations, 2011 CFR

...2011-04-01 2011-04-01 false Rubber dam and accessories. 872.6300 Section 872...Miscellaneous Devices § 872.6300 Rubber dam and accessories. (a) Identification. A rubber dam and accessories is a device...

2011-04-01

63

21 CFR 872.6300 - Rubber dam and accessories.  

Code of Federal Regulations, 2014 CFR

...2014-04-01 2014-04-01 false Rubber dam and accessories. 872.6300 Section 872...Miscellaneous Devices § 872.6300 Rubber dam and accessories. (a) Identification. A rubber dam and accessories is a device...

2014-04-01

64

21 CFR 872.6300 - Rubber dam and accessories.  

Code of Federal Regulations, 2013 CFR

...2013-04-01 2013-04-01 false Rubber dam and accessories. 872.6300 Section 872...Miscellaneous Devices § 872.6300 Rubber dam and accessories. (a) Identification. A rubber dam and accessories is a device...

2013-04-01

65

21 CFR 872.6300 - Rubber dam and accessories.  

Code of Federal Regulations, 2012 CFR

...2012-04-01 2012-04-01 false Rubber dam and accessories. 872.6300 Section 872...Miscellaneous Devices § 872.6300 Rubber dam and accessories. (a) Identification. A rubber dam and accessories is a device...

2012-04-01

66

21 CFR 870.4200 - Cardiopulmonary bypass accessory equipment.  

Code of Federal Regulations, 2010 CFR

...2010-04-01 false Cardiopulmonary bypass accessory equipment. 870.4200 Section...870.4200 Cardiopulmonary bypass accessory equipment. (a) Identification. Cardiopulmonary bypass accessory equipment is a device that...

2010-04-01

67

21 CFR 884.4900 - Obstetric table and accessories.  

Code of Federal Regulations, 2010 CFR

...2010-04-01 false Obstetric table and accessories. 884.4900 Section 884.4900... § 884.4900 Obstetric table and accessories. (a) Identification. An...type of device may include the following accessories: patient equipment, support...

2010-04-01

68

14 CFR 121.251 - Engine accessory section diaphragm.  

Code of Federal Regulations, 2010 CFR

...2010-01-01 2010-01-01 false Engine accessory section diaphragm. 121.251 Section...Airworthiness Requirements § 121.251 Engine accessory section diaphragm. Unless equivalent...of the exhaust system from the engine accessory...

2010-01-01

69

49 CFR 393.3 - Additional equipment and accessories.  

Code of Federal Regulations, 2010 CFR

...false Additional equipment and accessories. 393.3 Section 393.3...SAFETY REGULATIONS PARTS AND ACCESSORIES NECESSARY FOR SAFE OPERATION...3 Additional equipment and accessories. Nothing contained in...

2010-10-01

70

21 CFR 868.5860 - Pressure tubing and accessories.  

Code of Federal Regulations, 2010 CFR

...2010-04-01 false Pressure tubing and accessories. 868.5860 Section 868.5860... § 868.5860 Pressure tubing and accessories. (a) Identification. Pressure tubing and accessories are flexible or rigid devices...

2010-04-01

71

21 CFR 872.4200 - Dental handpiece and accessories.  

Code of Federal Regulations, 2010 CFR

...2010-04-01 false Dental handpiece and accessories. 872.4200 Section 872.4200...872.4200 Dental handpiece and accessories. (a) Identification. A dental handpiece and accessories is an AC-powered,...

2010-04-01

72

14 CFR 125.149 - Engine accessory section diaphragm.  

Code of Federal Regulations, 2010 CFR

...2010-01-01 2010-01-01 false Engine accessory section diaphragm. 125.149 Section...Airworthiness Requirements § 125.149 Engine accessory section diaphragm. Unless equivalent...of the exhaust system from the engine accessory...

2010-01-01

73

21 CFR 884.2640 - Fetal phonocardiographic monitor and accessories.  

Code of Federal Regulations, 2010 CFR

...Fetal phonocardiographic monitor and accessories. 884.2640 Section 884.2640...Fetal phonocardiographic monitor and accessories. (a) Identification. A...type of device includes the following accessories: signal analysis and display...

2010-04-01

74

21 CFR 872.6250 - Dental chair and accessories.  

Code of Federal Regulations, 2010 CFR

...2010-04-01 false Dental chair and accessories. 872.6250 Section 872.6250...Devices § 872.6250 Dental chair and accessories. (a) Identification. A dental chair and accessories is a device, usually...

2010-04-01

75

21 CFR 872.4120 - Bone cutting instrument and accessories.  

Code of Federal Regulations, 2010 CFR

...false Bone cutting instrument and accessories. 872.4120 Section 872.4120...4120 Bone cutting instrument and accessories. (a) Identification. A bone cutting instrument and accessories is a metal device...

2010-04-01

76

49 CFR 192.147 - Flanges and flange accessories.  

Code of Federal Regulations, 2010 CFR

...2010-10-01 false Flanges and flange accessories. 192.147 Section 192.147 Transportation...Components § 192.147 Flanges and flange accessories. (a) Each flange or flange accessory (other than cast iron) must meet...

2010-10-01

77

21 CFR 884.4120 - Gynecologic electrocautery and accessories.  

Code of Federal Regulations, 2010 CFR

...false Gynecologic electrocautery and accessories. 884.4120 Section 884.4120...4120 Gynecologic electrocautery and accessories. (a) Identification. ...of device may include the following accessories: an electrical generator, a...

2010-04-01

78

Three Accessories for a Rotating Platform.  

ERIC Educational Resources Information Center

Describes three accessories developed to be used in conjunction with the rotating platform or turntable. Three demonstrations using these accessories are included. These demonstrations are: (a) conservation of angular momentum; (b) gravity-defying goblets; and (c) direct measurement of centripetal force. (HM)

Riley, James A.; Fryer, Oscar G.

1980-01-01

79

An accessory limb with an imperforate anus  

PubMed Central

Congenital accessory limbs are very rare anomalies with many causative factors. We describe the case of a 1-day-old female neonate-born to a healthy, 27-year-old mother-who presented with an accessory limb (foot) attached to the buttock and an imperforate anus. We also provide a review of the relevant literature. PMID:25317418

Park, Kun-Bo; Kim, Yeon-Mee; Park, Ji-Yong; Chung, Mi-Lim; Jung, Yu-Jin

2014-01-01

80

Gas turbine engine with convertible accessories  

NASA Technical Reports Server (NTRS)

Drive means for connecting a gas turbine engine to its accessories are so constructed as to allow the accessories to be selectively positioned to any one of several predetermined circumferential positions about the perimeter of the engine. This feature permits convenient mounting of the same engine upon vehicles demanding radically different engine mounting arrangements.

Sargisson, D. F.; Adamson, A. P. (inventors)

1978-01-01

81

Accessory liver lobes: anatomical description and clinical implications.  

PubMed

Accessory liver lobes are a rare condition and appear to be due to excessive development of the liver. The presence of an accessory hepatic lobe is often diagnosed incidentally and sometimes revealed if it develops torsion, especially in pedunculated forms. In most cases, the accessory lobe is located below the liver, i.e., infrahepatic. Riedel's lobe is the best-known example of an accessory lobe, corresponding to hypertrophy of segments V and VI. While accessories lobes can simulate tumors, there have also been reports of hepatocellular tumor(s) that developed in these accessory lobes. Based on a review of the literature, this update focuses on accessory hepatic lobes. PMID:25448768

Glenisson, M; Salloum, C; Lim, C; Lacaze, L; Malek, A; Enriquez, A; Compagnon, P; Laurent, A; Azoulay, D

2014-12-01

82

ORIGINAL PAPER Accessory mineral UThPb ages and 40  

E-print Network

Jorge A. Vazquez � Paul R. Renne � Axel K. Schmitt � Charles R. Bacon � Mary R. Reid Received: 16 August. J. I. Simon (&) Á P. R. Renne University of California, Berkeley & Berkeley Geochronology Center, Northridge, CA, USA A. K. Schmitt University of California, Los Angeles, Los Angeles, CA, USA C. R. Bacon

83

14 CFR 29.1163 - Powerplant accessories.  

Code of Federal Regulations, 2011 CFR

... (2) Use the provisions on the engine for mounting; and (3) Be sealed in such a way as to prevent contamination of the engine oil system and the accessory system. (b) Electrical equipment subject to arcing or sparking must be...

2011-01-01

84

14 CFR 27.1163 - Powerplant accessories.  

Code of Federal Regulations, 2013 CFR

... (2) Use the provisions on the engine for mounting; and (3) Be sealed in such a way as to prevent contamination of the engine oil system and the accessory system. (b) Unless other means are provided, torque limiting means...

2013-01-01

85

14 CFR 25.1163 - Powerplant accessories.  

Code of Federal Regulations, 2011 CFR

...engine involved; (2) Use the provisions on the engine for mounting; and (3) Be sealed to prevent contamination of the engine oil system and the accessory system. (b) Electrical equipment subject to arcing or sparking must be...

2011-01-01

86

14 CFR 29.1163 - Powerplant accessories.  

Code of Federal Regulations, 2014 CFR

... (2) Use the provisions on the engine for mounting; and (3) Be sealed in such a way as to prevent contamination of the engine oil system and the accessory system. (b) Electrical equipment subject to arcing or sparking must be...

2014-01-01

87

14 CFR 29.1163 - Powerplant accessories.  

Code of Federal Regulations, 2013 CFR

... (2) Use the provisions on the engine for mounting; and (3) Be sealed in such a way as to prevent contamination of the engine oil system and the accessory system. (b) Electrical equipment subject to arcing or sparking must be...

2013-01-01

88

14 CFR 29.1163 - Powerplant accessories.  

Code of Federal Regulations, 2012 CFR

... (2) Use the provisions on the engine for mounting; and (3) Be sealed in such a way as to prevent contamination of the engine oil system and the accessory system. (b) Electrical equipment subject to arcing or sparking must be...

2012-01-01

89

14 CFR 27.1163 - Powerplant accessories.  

Code of Federal Regulations, 2014 CFR

... (2) Use the provisions on the engine for mounting; and (3) Be sealed in such a way as to prevent contamination of the engine oil system and the accessory system. (b) Unless other means are provided, torque limiting means...

2014-01-01

90

14 CFR 25.1163 - Powerplant accessories.  

Code of Federal Regulations, 2010 CFR

...engine involved; (2) Use the provisions on the engine for mounting; and (3) Be sealed to prevent contamination of the engine oil system and the accessory system. (b) Electrical equipment subject to arcing or sparking must be...

2010-01-01

91

14 CFR 25.1163 - Powerplant accessories.  

Code of Federal Regulations, 2013 CFR

...engine involved; (2) Use the provisions on the engine for mounting; and (3) Be sealed to prevent contamination of the engine oil system and the accessory system. (b) Electrical equipment subject to arcing or sparking must be...

2013-01-01

92

14 CFR 27.1163 - Powerplant accessories.  

Code of Federal Regulations, 2011 CFR

... (2) Use the provisions on the engine for mounting; and (3) Be sealed in such a way as to prevent contamination of the engine oil system and the accessory system. (b) Unless other means are provided, torque limiting means...

2011-01-01

93

14 CFR 27.1163 - Powerplant accessories.  

Code of Federal Regulations, 2012 CFR

... (2) Use the provisions on the engine for mounting; and (3) Be sealed in such a way as to prevent contamination of the engine oil system and the accessory system. (b) Unless other means are provided, torque limiting means...

2012-01-01

94

14 CFR 25.1163 - Powerplant accessories.  

Code of Federal Regulations, 2014 CFR

...engine involved; (2) Use the provisions on the engine for mounting; and (3) Be sealed to prevent contamination of the engine oil system and the accessory system. (b) Electrical equipment subject to arcing or sparking must be...

2014-01-01

95

14 CFR 29.1163 - Powerplant accessories.  

Code of Federal Regulations, 2010 CFR

... (2) Use the provisions on the engine for mounting; and (3) Be sealed in such a way as to prevent contamination of the engine oil system and the accessory system. (b) Electrical equipment subject to arcing or sparking must be...

2010-01-01

96

14 CFR 27.1163 - Powerplant accessories.  

Code of Federal Regulations, 2010 CFR

... (2) Use the provisions on the engine for mounting; and (3) Be sealed in such a way as to prevent contamination of the engine oil system and the accessory system. (b) Unless other means are provided, torque limiting means...

2010-01-01

97

14 CFR 25.1163 - Powerplant accessories.  

Code of Federal Regulations, 2012 CFR

...engine involved; (2) Use the provisions on the engine for mounting; and (3) Be sealed to prevent contamination of the engine oil system and the accessory system. (b) Electrical equipment subject to arcing or sparking must be...

2012-01-01

98

Giant epithelial cyst of the accessory spleen  

Microsoft Academic Search

Splenic cysts are uncommon, and cysts derived from the accessory spleen are rare. We report a case of a huge splenic cyst\\u000a derived from the accessory spleen in the omentum, concomitant with multiple epithelial cysts of the primary spleen. Both serum\\u000a and cystic fluid concentrations of carbohydrate antigen (CA)19-9 were markedly elevated. A huge monolocular cyst occupied\\u000a the entire abdomen.

Masaki Mori; Taro Ishii; Toru Iida; Fumihiko Tanaka; Hajime Takikawa; Kota Okinaga

2003-01-01

99

Controlled Speed Accessory Drive demonstration program  

NASA Technical Reports Server (NTRS)

A Controlled Speed Accessory Drive System was examined in an effort to improve the fuel economy of passenger cars. Concept feasibility and the performance of a typical system during actual road driving conditions were demonstrated. The CSAD system is described as a mechanical device which limits engine accessory speeds, thereby reducing parasitic horsepower losses and improving overall vehicle fuel economy. Fuel consumption data were compiled for fleets of GSA vehicles. Various motor pool locations were selected, each representing different climatic conditions. On the basis of a total accumulated fleet usage of nearly three million miles, an overall fuel economy improvement of 6 percent to 7 percent was demonstrated. Coincident chassis dynamometer tests were accomplished on selected vehicles to establish the effect of different accessory drive systems on exhaust emissions, and to evaluate the magnitude of the mileage benefits which could be derived.

Hoehn, F. W.

1981-01-01

100

21 CFR 890.3025 - Prosthetic and orthotic accessory.  

Code of Federal Regulations, 2012 CFR

... 2012-04-01 2012-04-01 false Prosthetic and orthotic accessory. 890.3025 Section...PHYSICAL MEDICINE DEVICES Physical Medicine Prosthetic Devices § 890.3025 Prosthetic and orthotic accessory. (a)...

2012-04-01

101

21 CFR 890.3025 - Prosthetic and orthotic accessory.  

Code of Federal Regulations, 2014 CFR

... 2014-04-01 2014-04-01 false Prosthetic and orthotic accessory. 890.3025 Section...PHYSICAL MEDICINE DEVICES Physical Medicine Prosthetic Devices § 890.3025 Prosthetic and orthotic accessory. (a)...

2014-04-01

102

21 CFR 872.6010 - Abrasive device and accessories.  

Code of Federal Regulations, 2012 CFR

...accessories. (a) Identification. An abrasive device and accessories is a device constructed of various abrasives, such as diamond chips, that are glued to shellac-based paper. The device is intended to remove excessive restorative materials,...

2012-04-01

103

21 CFR 884.6120 - Assisted reproduction accessories.  

Code of Federal Regulations, 2013 CFR

...2013-04-01 2013-04-01 false Assisted reproduction accessories. 884.6120 Section...OBSTETRICAL AND GYNECOLOGICAL DEVICES Assisted Reproduction Devices § 884.6120 Assisted reproduction accessories. (a)...

2013-04-01

104

21 CFR 884.6120 - Assisted reproduction accessories.  

Code of Federal Regulations, 2012 CFR

...2012-04-01 2012-04-01 false Assisted reproduction accessories. 884.6120 Section...OBSTETRICAL AND GYNECOLOGICAL DEVICES Assisted Reproduction Devices § 884.6120 Assisted reproduction accessories. (a)...

2012-04-01

105

21 CFR 884.6120 - Assisted reproduction accessories.  

Code of Federal Regulations, 2014 CFR

...2014-04-01 2014-04-01 false Assisted reproduction accessories. 884.6120 Section...OBSTETRICAL AND GYNECOLOGICAL DEVICES Assisted Reproduction Devices § 884.6120 Assisted reproduction accessories. (a)...

2014-04-01

106

21 CFR 884.2960 - Obstetric ultrasonic transducer and accessories.  

Code of Federal Regulations, 2014 CFR

...2014-04-01 false Obstetric ultrasonic transducer and accessories. 884...Devices § 884.2960 Obstetric ultrasonic transducer and accessories. (a) Identification. An obstetric ultrasonic transducer is a device used to...

2014-04-01

107

21 CFR 884.2960 - Obstetric ultrasonic transducer and accessories.  

Code of Federal Regulations, 2013 CFR

...2013-04-01 false Obstetric ultrasonic transducer and accessories. 884...Devices § 884.2960 Obstetric ultrasonic transducer and accessories. (a) Identification. An obstetric ultrasonic transducer is a device used to...

2013-04-01

108

14 CFR 23.1192 - Engine accessory compartment diaphragm.  

Code of Federal Regulations, 2010 CFR

...accessory compartment diaphragm. 23.1192 Section 23.1192 Aeronautics and Space FEDERAL...accessory compartment diaphragm. For aircooled radial engines, the engine power section and all portions of the exhaust sytem...

2010-01-01

109

21 CFR 872.6640 - Dental operative unit and accessories.  

Code of Federal Regulations, 2014 CFR

...2014-04-01 2014-04-01 false Dental operative unit and accessories. 872...SERVICES (CONTINUED) MEDICAL DEVICES DENTAL DEVICES Miscellaneous Devices § 872.6640 Dental operative unit and accessories....

2014-04-01

110

21 CFR 872.6640 - Dental operative unit and accessories.  

Code of Federal Regulations, 2013 CFR

...2013-04-01 2013-04-01 false Dental operative unit and accessories. 872...SERVICES (CONTINUED) MEDICAL DEVICES DENTAL DEVICES Miscellaneous Devices § 872.6640 Dental operative unit and accessories....

2013-04-01

111

21 CFR 872.4920 - Dental electrosurgical unit and accessories.  

Code of Federal Regulations, 2014 CFR

... 2014-04-01 2014-04-01 false Dental electrosurgical unit and accessories. 872...SERVICES (CONTINUED) MEDICAL DEVICES DENTAL DEVICES Surgical Devices § 872.4920 Dental electrosurgical unit and accessories....

2014-04-01

112

21 CFR 872.6640 - Dental operative unit and accessories.  

Code of Federal Regulations, 2010 CFR

...2010-04-01 2010-04-01 false Dental operative unit and accessories. 872...SERVICES (CONTINUED) MEDICAL DEVICES DENTAL DEVICES Miscellaneous Devices § 872.6640 Dental operative unit and accessories....

2010-04-01

113

21 CFR 872.4920 - Dental electrosurgical unit and accessories.  

Code of Federal Regulations, 2011 CFR

... 2011-04-01 2011-04-01 false Dental electrosurgical unit and accessories. 872...SERVICES (CONTINUED) MEDICAL DEVICES DENTAL DEVICES Surgical Devices § 872.4920 Dental electrosurgical unit and accessories....

2011-04-01

114

21 CFR 872.4920 - Dental electrosurgical unit and accessories.  

Code of Federal Regulations, 2010 CFR

... 2010-04-01 2010-04-01 false Dental electrosurgical unit and accessories. 872...SERVICES (CONTINUED) MEDICAL DEVICES DENTAL DEVICES Surgical Devices § 872.4920 Dental electrosurgical unit and accessories....

2010-04-01

115

21 CFR 872.6640 - Dental operative unit and accessories.  

Code of Federal Regulations, 2011 CFR

...2011-04-01 2011-04-01 false Dental operative unit and accessories. 872...SERVICES (CONTINUED) MEDICAL DEVICES DENTAL DEVICES Miscellaneous Devices § 872.6640 Dental operative unit and accessories....

2011-04-01

116

21 CFR 872.4920 - Dental electrosurgical unit and accessories.  

Code of Federal Regulations, 2013 CFR

... 2013-04-01 2013-04-01 false Dental electrosurgical unit and accessories. 872...SERVICES (CONTINUED) MEDICAL DEVICES DENTAL DEVICES Surgical Devices § 872.4920 Dental electrosurgical unit and accessories....

2013-04-01

117

21 CFR 872.6640 - Dental operative unit and accessories.  

Code of Federal Regulations, 2012 CFR

...2012-04-01 2012-04-01 false Dental operative unit and accessories. 872...SERVICES (CONTINUED) MEDICAL DEVICES DENTAL DEVICES Miscellaneous Devices § 872.6640 Dental operative unit and accessories....

2012-04-01

118

21 CFR 872.4920 - Dental electrosurgical unit and accessories.  

Code of Federal Regulations, 2012 CFR

... 2012-04-01 2012-04-01 false Dental electrosurgical unit and accessories. 872...SERVICES (CONTINUED) MEDICAL DEVICES DENTAL DEVICES Surgical Devices § 872.4920 Dental electrosurgical unit and accessories....

2012-04-01

119

Reducing Exposure: Hands-free Kits and Other Accessories  

MedlinePLUS

... kits Hand-free kits may include audio or Bluetooth headsets and various types of body-worn accessories ... Other Accessories Interference with Pacemakers and Other Medical Devices Hearing Aids and Cell Phones Children and Cell ...

120

21 CFR 890.3025 - Prosthetic and orthotic accessory.  

Code of Federal Regulations, 2010 CFR

... 2010-04-01 2010-04-01 false Prosthetic and orthotic accessory. 890.3025 Section...PHYSICAL MEDICINE DEVICES Physical Medicine Prosthetic Devices § 890.3025 Prosthetic and orthotic accessory. (a)...

2010-04-01

121

19 CFR 10.537 - Accessories, spare parts, or tools.  

Code of Federal Regulations, 2010 CFR

...HOMELAND SECURITY; DEPARTMENT OF THE TREASURY ARTICLES CONDITIONALLY FREE, SUBJECT TO A REDUCED RATE, ETC. United States-Singapore Free Trade Agreement Rules of Origin § 10.537 Accessories, spare parts, or tools. Accessories,...

2010-04-01

122

21 CFR 884.1720 - Gynecologic laparoscope and accessories.  

Code of Federal Regulations, 2012 CFR

...2012-04-01 false Gynecologic laparoscope and accessories. 884.1720 ...Devices § 884.1720 Gynecologic laparoscope and accessories. (a) Identification. A gynecologic laparoscope is a device used to...

2012-04-01

123

21 CFR 884.1720 - Gynecologic laparoscope and accessories.  

Code of Federal Regulations, 2014 CFR

...2014-04-01 false Gynecologic laparoscope and accessories. 884.1720 ...Devices § 884.1720 Gynecologic laparoscope and accessories. (a) Identification. A gynecologic laparoscope is a device used to...

2014-04-01

124

21 CFR 872.6010 - Abrasive device and accessories.  

Code of Federal Regulations, 2011 CFR

...accessories. (a) Identification. An abrasive device and accessories is a device constructed of various abrasives, such as diamond chips, that are glued to shellac-based paper. The device is intended to remove excessive restorative materials,...

2011-04-01

125

21 CFR 872.6010 - Abrasive device and accessories.  

Code of Federal Regulations, 2014 CFR

...accessories. (a) Identification. An abrasive device and accessories is a device constructed of various abrasives, such as diamond chips, that are glued to shellac-based paper. The device is intended to remove excessive restorative materials,...

2014-04-01

126

21 CFR 884.1175 - Endometrial suction curette and accessories.  

Code of Federal Regulations, 2010 CFR

...2010-04-01 false Endometrial suction curette and accessories. 884.1175...Devices § 884.1175 Endometrial suction curette and accessories. (a) Identification. An endometrial suction curette is a device used to...

2010-04-01

127

19 CFR 10.456 - Accessories, spare parts or tools.  

Code of Federal Regulations, 2010 CFR

...HOMELAND SECURITY; DEPARTMENT OF THE TREASURY ARTICLES CONDITIONALLY FREE, SUBJECT TO A REDUCED RATE, ETC. United States-Chile Free Trade Agreement Rules of Origin § 10.456 Accessories, spare parts or tools. Accessories, spare parts...

2010-04-01

128

19 CFR 10.456 - Accessories, spare parts or tools.  

Code of Federal Regulations, 2012 CFR

...HOMELAND SECURITY; DEPARTMENT OF THE TREASURY ARTICLES CONDITIONALLY FREE, SUBJECT TO A REDUCED RATE, ETC. United States-Chile Free Trade Agreement Rules of Origin § 10.456 Accessories, spare parts or tools. Accessories, spare parts...

2012-04-01

129

19 CFR 10.456 - Accessories, spare parts or tools.  

Code of Federal Regulations, 2011 CFR

...HOMELAND SECURITY; DEPARTMENT OF THE TREASURY ARTICLES CONDITIONALLY FREE, SUBJECT TO A REDUCED RATE, ETC. United States-Chile Free Trade Agreement Rules of Origin § 10.456 Accessories, spare parts or tools. Accessories, spare parts...

2011-04-01

130

19 CFR 10.456 - Accessories, spare parts or tools.  

Code of Federal Regulations, 2013 CFR

...HOMELAND SECURITY; DEPARTMENT OF THE TREASURY ARTICLES CONDITIONALLY FREE, SUBJECT TO A REDUCED RATE, ETC. United States-Chile Free Trade Agreement Rules of Origin § 10.456 Accessories, spare parts or tools. Accessories, spare parts...

2013-04-01

131

19 CFR 10.456 - Accessories, spare parts or tools.  

Code of Federal Regulations, 2014 CFR

...HOMELAND SECURITY; DEPARTMENT OF THE TREASURY ARTICLES CONDITIONALLY FREE, SUBJECT TO A REDUCED RATE, ETC. United States-Chile Free Trade Agreement Rules of Origin § 10.456 Accessories, spare parts or tools. Accessories, spare parts...

2014-04-01

132

Detection of accessory spleens with indium 111-labeled autologous platelets  

Microsoft Academic Search

In two patients with recurrent immune thrombocytopenia, accessory splenic tissue was demonstrated by radionuclide imaging following administration of indium 111-labeled autologous platelets. In one of these patients, no accessory splenic tissue was seen on images obtained with technetium 99m sulfur colloid. This new technique provides a simple means for demonstrating accessory spleens and simultaneously evaluating the life-span of autologous platelets.

Harmon H. Davis; Ajit Varki; W. A. Heaton; B. A. Siegel

1980-01-01

133

Nonobstructing Accessory Mitral Valve Tissue and Ventricular Septal Defect  

Microsoft Academic Search

A 4-month-old boy with ventricular septal defect was found to have accessory mitral valve tissue attached to the anterior leaflet of the mitral valve. Operation was successfully performed to excise the accessory mitral tissue in the left ventricular outflow tract and close the ventricular septal defect. Most previously reported cases with accessory mitral valve tissue were associated with left ventricular

Hiroshi Izumoto; Kazuaki Ishihara; Masaaki Ogawa; Yutaka Fujii; Kotaro Oyama; Kohei Kawazoe

1996-01-01

134

49 CFR 390.17 - Additional equipment and accessories.  

Code of Federal Regulations, 2010 CFR

...2010-10-01 false Additional equipment and accessories. 390.17 Section 390.17 Transportation...390.17 Additional equipment and accessories. Nothing in this subchapter shall...prohibit the use of additional equipment and accessories, not inconsistent with or...

2010-10-01

135

14 CFR 25.1192 - Engine accessory section diaphragm.  

Code of Federal Regulations, 2010 CFR

...2010-01-01 2010-01-01 false Engine accessory section diaphragm. 25.1192 Section...Fire Protection § 25.1192 Engine accessory section diaphragm. For reciprocating...system must be isolated from the engine accessory compartment by a diaphragm that...

2010-01-01

136

21 CFR 878.4960 - Operating tables and accessories and operating chairs and accessories.  

Code of Federal Regulations, 2010 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GENERAL AND PLASTIC SURGERY DEVICES Surgical Devices § 878.4960 Operating tables and accessories and operating chairs and...

2010-04-01

137

21 CFR 878.4950 - Manual operating table and accessories and manual operating chair and accessories.  

Code of Federal Regulations, 2010 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GENERAL AND PLASTIC SURGERY DEVICES Surgical Devices § 878.4950 Manual operating table and accessories and manual operating chair...

2010-04-01

138

21 CFR 878.4950 - Manual operating table and accessories and manual operating chair and accessories.  

Code of Federal Regulations, 2013 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GENERAL AND PLASTIC SURGERY DEVICES Surgical Devices § 878.4950 Manual operating table and accessories and manual operating chair and...

2013-04-01

139

21 CFR 878.4950 - Manual operating table and accessories and manual operating chair and accessories.  

Code of Federal Regulations, 2014 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GENERAL AND PLASTIC SURGERY DEVICES Surgical Devices § 878.4950 Manual operating table and accessories and manual operating chair and...

2014-04-01

140

21 CFR 878.4950 - Manual operating table and accessories and manual operating chair and accessories.  

Code of Federal Regulations, 2012 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GENERAL AND PLASTIC SURGERY DEVICES Surgical Devices § 878.4950 Manual operating table and accessories and manual operating chair and...

2012-04-01

141

21 CFR 878.4950 - Manual operating table and accessories and manual operating chair and accessories.  

Code of Federal Regulations, 2011 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GENERAL AND PLASTIC SURGERY DEVICES Surgical Devices § 878.4950 Manual operating table and accessories and manual operating chair and...

2011-04-01

142

Magnetite composition in Ni-Cu-PGE deposits worldwide: application to mineral exploration  

E-print Network

Magnetite composition in Ni-Cu-PGE deposits worldwide: application to mineral exploration Emilie October 2013 Accepted 13 May 2014 Available online 21 May 2014 Keywords: Magnetite Ni Cu Sulfides Mineral in the exploration of ore deposits. Magnetite is a common accessory mineral in magmatic Ni­Cu­Platinum-Group Element

143

Tracminer: traction-enhancing mining equipment accessory  

Microsoft Academic Search

Explains how the Tracminer project aimed to provide a robust, low cost device to be mounted as an accessory on the motorized wheels of traction machines, in order to increase grip on loose soils. The main goal was to provide a device increasing by 30-40 per cent the traction capacity of the given machine in soft or marshy soil working

Manuel Armada; Mario Maza; Jean-Guy Fontaine; Pablo Gonzalez de Santos; Vasilios Papantoniou

1997-01-01

144

Home Economics Careers in Apparel and Accessories.  

ERIC Educational Resources Information Center

This course of study on careers in apparel and accessories is one of a series on home economics careers designed to assist teacher-coordinators in Texas in promotion and/or teaching home economics cooperative education programs. The course of study consists of (1) an overview and job description, (2) a job analysis, (3) a course outline, (4)…

Texas Education Agency, Austin. Dept. of Occupational Education and Technology.

145

Electronic Position Sensor for Power Operated Accessory  

DOEpatents

An electronic position sensor for use with a power operated vehicle accessory, such as a power liftgate. The position sensor includes an elongated resistive circuit that is mounted such that it is stationary and extends along the path of a track portion of the power operated accessory. The position sensor further includes a contact nub mounted to a link member that moves within the track portion such that the contact nub is slidingly biased against the elongated circuit. As the link member moves under the force of a motor-driven output gear, the contact nub slides along the surface of the resistive circuit, thereby affecting the overall resistance of the circuit. The position sensor uses the overall resistance to provide an electronic position signal to an ECU, wherein the signal is indicative of the absolute position of the power operated accessory. Accordingly, the electronic position sensor is capable of providing an electronic signal that enables the ECU to track the absolute position of the power operated accessory.

Haag, Ronald H.; Chia, Michael I.

2005-05-31

146

Department of Pharmacology Shared Equipment Centrifugation & Accessories  

E-print Network

Department of Pharmacology Shared Equipment Centrifugation & Accessories 1 Sorvall RC-5B High Speed Centrifuge (2-233) 2 Sorvall RC-5C+ High Speed Centrifuges (2-233) 1 Beckman LE80 Ultracentrifuge (2-233) 1 Thermo-Sorvall Discovery M150 Ultracentrifuge (2-270) 1 Eppendorf High Speed 581OR Tabletop Centrifuge (2

147

Algal Accessory Pigment Detection Using AVIRIS Image-Derived Spectral Radiance Data  

NASA Technical Reports Server (NTRS)

Visual and derivative analyses of AVIRIS spectral data can be used to detect algal accessory pigments in aquatic communities. This capability extends the use of remote sensing for the study of aquatic ecosystems by allowing detection of taxonomically significant pigment signatures which yield information about the type of algae present. Such information allows remote sensing-based assessment of aquatic ecosystem health, as in the detection of nuisance blooms of cyanobacteria or toxic blooms of dinoflagellates. Remote sensing of aquatic systems has traditionally focused on quantification of chlorophyll a, a photoreactive (and light-harvesting) pigment which is common to all algae as well as cyanobacteria (bluegreen algae). Due to the ubiquitousness of this pigment within algae, chl a is routinely measured to estimate algal biomass both during ground-truthing and using various airborne or satellite based sensors, including AVIRIS. Within the remote sensing and aquatic sciences communities, ongoing research has been performed to detect algal accessory pigments for assessment of algal population composition. This research is based on the fact that many algal accessory pigments are taxonomically significant, and all are spectrally unique. Aquatic scientists have been refining pigment analysis techniques, primarily high performance liquid chromatography, or HPLC, to detect specific pigments as a time-saving alternative to individual algal cell identifications and counts. Remote sensing scientists are investigating the use of pigment signatures to construct pigment libraries analogous to mineral spectral libraries used in geological remote sensing applications. The accessory pigment approach has been used successfully in remote sensing using data from the Thematic Mapper, low-altitude, multiple channel scanners, field spectroradiometers and the AVIRIS hyperspectral scanner. Due to spectral and spatial resolution capabilities, AVIRIS is the sensor of choice for such studies. We present here our results on detection of algal accessory pigments using AVIRIS data.

Richardson, Laurie L.; Ambrosia, Vincent G.

1996-01-01

148

Percutaneous laser balloon coagulation of accessory pathways  

NASA Astrophysics Data System (ADS)

Nonsurgical ablation techniques have been proposed to cease conduction through accessory pathways which electrically connect the atrium and ventricle. The intent of this research was to investigate further the potential use of laser energy, delivered via a balloon catheter in the canine coronary sinus to photocoagulate the myocardial fibers responsible for accessory pathway conduction. Based on histological evaluation of the lesions created in acute and chronic studies, the extent of coagulation necrosis is sufficient to ablate most pathways which lie adjacent to the coronary sinus. Results from surface temperature measurements using repetitive laser exposures suggest that optical and/or thermal changes occurring in the myocardium are of greater importance than those occurring in the adipose tissue. Since the laser balloon catheter is surrounded by various tissue types, a Monte Carlo model was developed to determine the distribution of light in the atrioventricular groove.

McMath, Linda P.; Schuger, Claudio D.; Crilley, Richard J.; Spears, J. Richard

1991-05-01

149

30 CFR 75.1106-5 - Maintenance and tests of liquefied and nonliquefied compressed gas cylinders; accessories and...  

Code of Federal Regulations, 2010 CFR

...nonliquefied compressed gas cylinders; accessories and equipment; requirements...nonliquefied compressed gas cylinders; accessories and equipment; requirements...gages, and other cylinder accessories shall be maintained in a...

2010-07-01

150

21 CFR 890.3025 - Prosthetic and orthotic accessory.  

Code of Federal Regulations, 2011 CFR

...AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES PHYSICAL MEDICINE DEVICES Physical Medicine Prosthetic Devices § 890.3025 Prosthetic and orthotic accessory. (a)...

2011-04-01

151

21 CFR 890.3025 - Prosthetic and orthotic accessory.  

Code of Federal Regulations, 2013 CFR

...AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES PHYSICAL MEDICINE DEVICES Physical Medicine Prosthetic Devices § 890.3025 Prosthetic and orthotic accessory. (a)...

2013-04-01

152

21 CFR 876.5130 - Urological catheter and accessories.  

Code of Federal Regulations, 2013 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Therapeutic Devices § 876.5130 Urological catheter and accessories. (a) Identification....

2013-04-01

153

21 CFR 876.4300 - Endoscopic electrosurgical unit and accessories.  

Code of Federal Regulations, 2010 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Surgical Devices § 876.4300 Endoscopic electrosurgical unit and accessories. (a)...

2010-04-01

154

21 CFR 876.1500 - Endoscope and accessories.  

Code of Federal Regulations, 2011 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Diagnostic Devices § 876.1500 Endoscope and accessories. (a) Identification. An...

2011-04-01

155

21 CFR 876.5130 - Urological catheter and accessories.  

Code of Federal Regulations, 2010 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Therapeutic Devices § 876.5130 Urological catheter and accessories. (a) Identification....

2010-04-01

156

21 CFR 876.4300 - Endoscopic electrosurgical unit and accessories.  

Code of Federal Regulations, 2012 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Surgical Devices § 876.4300 Endoscopic electrosurgical unit and accessories. (a)...

2012-04-01

157

21 CFR 876.5980 - Gastrointestinal tube and accessories.  

Code of Federal Regulations, 2014 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Therapeutic Devices § 876.5980 Gastrointestinal tube and accessories. (a)...

2014-04-01

158

21 CFR 876.5820 - Hemodialysis system and accessories.  

Code of Federal Regulations, 2014 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Therapeutic Devices § 876.5820 Hemodialysis system and accessories. (a) Identification....

2014-04-01

159

21 CFR 876.5980 - Gastrointestinal tube and accessories.  

Code of Federal Regulations, 2010 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Therapeutic Devices § 876.5980 Gastrointestinal tube and accessories. (a)...

2010-04-01

160

21 CFR 876.5980 - Gastrointestinal tube and accessories.  

Code of Federal Regulations, 2013 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Therapeutic Devices § 876.5980 Gastrointestinal tube and accessories. (a)...

2013-04-01

161

21 CFR 876.5130 - Urological catheter and accessories.  

Code of Federal Regulations, 2012 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Therapeutic Devices § 876.5130 Urological catheter and accessories. (a) Identification....

2012-04-01

162

21 CFR 876.5630 - Peritoneal dialysis system and accessories.  

Code of Federal Regulations, 2012 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Therapeutic Devices § 876.5630 Peritoneal dialysis system and accessories. (a)...

2012-04-01

163

21 CFR 876.5630 - Peritoneal dialysis system and accessories.  

Code of Federal Regulations, 2014 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Therapeutic Devices § 876.5630 Peritoneal dialysis system and accessories. (a)...

2014-04-01

164

21 CFR 876.5130 - Urological catheter and accessories.  

Code of Federal Regulations, 2014 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Therapeutic Devices § 876.5130 Urological catheter and accessories. (a) Identification....

2014-04-01

165

21 CFR 876.1500 - Endoscope and accessories.  

Code of Federal Regulations, 2012 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Diagnostic Devices § 876.1500 Endoscope and accessories. (a) Identification. An...

2012-04-01

166

21 CFR 876.5980 - Gastrointestinal tube and accessories.  

Code of Federal Regulations, 2012 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Therapeutic Devices § 876.5980 Gastrointestinal tube and accessories. (a)...

2012-04-01

167

21 CFR 876.5090 - Suprapubic urological catheter and accessories.  

Code of Federal Regulations, 2012 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Therapeutic Devices § 876.5090 Suprapubic urological catheter and accessories. (a)...

2012-04-01

168

21 CFR 876.5090 - Suprapubic urological catheter and accessories.  

Code of Federal Regulations, 2013 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Therapeutic Devices § 876.5090 Suprapubic urological catheter and accessories. (a)...

2013-04-01

169

21 CFR 876.1500 - Endoscope and accessories.  

Code of Federal Regulations, 2010 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Diagnostic Devices § 876.1500 Endoscope and accessories. (a) Identification. An...

2010-04-01

170

21 CFR 876.1500 - Endoscope and accessories.  

Code of Federal Regulations, 2014 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Diagnostic Devices § 876.1500 Endoscope and accessories. (a) Identification. An...

2014-04-01

171

21 CFR 876.4300 - Endoscopic electrosurgical unit and accessories.  

Code of Federal Regulations, 2013 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Surgical Devices § 876.4300 Endoscopic electrosurgical unit and accessories. (a)...

2013-04-01

172

21 CFR 876.4300 - Endoscopic electrosurgical unit and accessories.  

Code of Federal Regulations, 2014 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Surgical Devices § 876.4300 Endoscopic electrosurgical unit and accessories. (a)...

2014-04-01

173

21 CFR 876.1500 - Endoscope and accessories.  

Code of Federal Regulations, 2013 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Diagnostic Devices § 876.1500 Endoscope and accessories. (a) Identification. An...

2013-04-01

174

21 CFR 876.4300 - Endoscopic electrosurgical unit and accessories.  

Code of Federal Regulations, 2011 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Surgical Devices § 876.4300 Endoscopic electrosurgical unit and accessories. (a)...

2011-04-01

175

21 CFR 876.5820 - Hemodialysis system and accessories.  

Code of Federal Regulations, 2012 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Therapeutic Devices § 876.5820 Hemodialysis system and accessories. (a) Identification....

2012-04-01

176

21 CFR 876.5090 - Suprapubic urological catheter and accessories.  

Code of Federal Regulations, 2014 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Therapeutic Devices § 876.5090 Suprapubic urological catheter and accessories. (a)...

2014-04-01

177

21 CFR 876.5820 - Hemodialysis system and accessories.  

Code of Federal Regulations, 2013 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Therapeutic Devices § 876.5820 Hemodialysis system and accessories. (a) Identification....

2013-04-01

178

21 CFR 876.5980 - Gastrointestinal tube and accessories.  

Code of Federal Regulations, 2011 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Therapeutic Devices § 876.5980 Gastrointestinal tube and accessories. (a)...

2011-04-01

179

21 CFR 876.5820 - Hemodialysis system and accessories.  

Code of Federal Regulations, 2010 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Therapeutic Devices § 876.5820 Hemodialysis system and accessories. (a) Identification....

2010-04-01

180

21 CFR 876.5090 - Suprapubic urological catheter and accessories.  

Code of Federal Regulations, 2011 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Therapeutic Devices § 876.5090 Suprapubic urological catheter and accessories. (a)...

2011-04-01

181

21 CFR 876.5820 - Hemodialysis system and accessories.  

Code of Federal Regulations, 2011 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Therapeutic Devices § 876.5820 Hemodialysis system and accessories. (a) Identification....

2011-04-01

182

21 CFR 876.5630 - Peritoneal dialysis system and accessories.  

Code of Federal Regulations, 2010 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Therapeutic Devices § 876.5630 Peritoneal dialysis system and accessories. (a)...

2010-04-01

183

21 CFR 876.5130 - Urological catheter and accessories.  

Code of Federal Regulations, 2011 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Therapeutic Devices § 876.5130 Urological catheter and accessories. (a) Identification....

2011-04-01

184

76 FR 585 - In the Matter of Certain Handbags, Luggage, Accessories and Packaging Thereof; Notice of...  

Federal Register 2010, 2011, 2012, 2013, 2014

...In the Matter of Certain Handbags, Luggage, Accessories and Packaging Thereof...after importation of certain handbags. luggage, accessories and packaging thereof by...after importation of certain handbags, luggage, accessories and packaging thereof...

2011-01-05

185

49 CFR 178.255-7 - Protection of valves and accessories.  

Code of Federal Regulations, 2010 CFR

...2010-10-01 false Protection of valves and accessories. 178.255-7 Section 178.255-7...178.255-7 Protection of valves and accessories. (a) All valves, fittings, accessories, safety devices, gauging...

2010-10-01

186

Reviewing prescription spending and accessory usage.  

PubMed

This article aims to explore the role of the stoma nurse specialist in the community and how recent initiatives within the NHS have impacted on the roles in stoma care to react to the rising prescription costs in the specialty. The article will explore how the stoma care nurse conducted her prescription reviews within her own clinical commissioning group (CCG). The findings of the reviews will be highlighted by a small case history and a mini audit that reveals that some stoma patients may be using their stoma care accessories inappropriately, which may contribute to the rise in stoma prescription spending. To prevent the incorrect use of stoma appliances it may necessitate an annual review of ostomates (individuals who have a stoma), as the author's reviews revealed that inappropriate usage was particularly commonplace when a patient may have not been reviewed by a stoma care specialist for some considerable amount of time. Initial education of the ostomate and ongoing education of how stoma products work is essential to prevent the misuse of stoma appliances, particularly accessories, as the reviews revealed that often patients were not always aware of how their products worked in practice. PMID:24642774

Oxenham, Julie

187

Accessory and anomalous atrioventricular valvar tissue causing outflow tract obstruction  

Microsoft Academic Search

Objectives. The purpose of this study was to determine the effect of accessory or anomalous atrioventricular valvar apparatus on relief of outflow tract obstruction.Background. Outflow tract obstruction due to accessory tissue or anomalous attachments of the atrioventricular valvar apparatus is an unusual but well-recognized problem. In addition to obstruction, anomalous attachments of the atrioventricular valvar apparatus may interfere with procedures

Doff B. McElhinney; V. Mohan Reddy; Norman H. Silverman; Frank L. Hanley

1998-01-01

188

Simon Effect with and without Awareness of the Accessory Stimulus  

ERIC Educational Resources Information Center

The authors investigated whether a Simon effect could be observed in an accessory-stimulus Simon task when participants were unaware of the task-irrelevant accessory cue. In Experiment 1A a central visual target was accompanied by a suprathreshold visual lateral cue. A regular Simon effect (i.e., faster cue-response corresponding reaction times…

Treccani, Barbara; Umilta, Carlo; Tagliabue, Mariaelena

2006-01-01

189

21 CFR 884.6190 - Assisted reproductive microscopes and microscope accessories.  

Code of Federal Regulations, 2014 CFR

...AND GYNECOLOGICAL DEVICES Assisted Reproduction Devices § 884.6190 Assisted... (a) Identification. Assisted reproduction microscopes and microscope accessories...which are classified under assisted reproduction accessories) are optical...

2014-04-01

190

21 CFR 884.6190 - Assisted reproductive microscopes and microscope accessories.  

Code of Federal Regulations, 2010 CFR

...AND GYNECOLOGICAL DEVICES Assisted Reproduction Devices § 884.6190 Assisted... (a) Identification. Assisted reproduction microscopes and microscope accessories...which are classified under assisted reproduction accessories) are optical...

2010-04-01

191

21 CFR 884.6190 - Assisted reproductive microscopes and microscope accessories.  

Code of Federal Regulations, 2013 CFR

...AND GYNECOLOGICAL DEVICES Assisted Reproduction Devices § 884.6190 Assisted... (a) Identification. Assisted reproduction microscopes and microscope accessories...which are classified under assisted reproduction accessories) are optical...

2013-04-01

192

21 CFR 884.6190 - Assisted reproductive microscopes and microscope accessories.  

Code of Federal Regulations, 2011 CFR

...AND GYNECOLOGICAL DEVICES Assisted Reproduction Devices § 884.6190 Assisted... (a) Identification. Assisted reproduction microscopes and microscope accessories...which are classified under assisted reproduction accessories) are optical...

2011-04-01

193

21 CFR 884.6190 - Assisted reproductive microscopes and microscope accessories.  

Code of Federal Regulations, 2012 CFR

...AND GYNECOLOGICAL DEVICES Assisted Reproduction Devices § 884.6190 Assisted... (a) Identification. Assisted reproduction microscopes and microscope accessories...which are classified under assisted reproduction accessories) are optical...

2012-04-01

194

RECONNAISSANCE GEOLOGY OF PLACER DEPOSITS CONTAINING RADIOACTIVE MINERALS IN THE BEAR VALLEY DISTRICT, VALLEY COUNTY, IDAHO  

Microsoft Academic Search

A reconnaissance of the Bear Valley district was undertaken to provide a ; geologic interpretation of placer deposits drilled by the U. S. Bureau of Mines. ; The placer minerals are monazite and a group of uranium bearing rare earth ; columbates and tantalates here referred to loosely as radioactive blacks. The ; monazite is an accessory mineral in the

J. H. Mackin; D. L. Schmidt

1953-01-01

195

Ore Minerals  

NSDL National Science Digital Library

This three part lab introduces sulfides and other ore minerals. Part one - Ore Minerals: Students fill in a table giving the metal, formula, and mineral group of several ore minerals. Part two - Box of Rocks: Students examine trays of ore minerals and record their physical properties, composition, habit, occurence, economic value, and use and answer questions about color, luster, density, transparency, and availability. Part three - Famous Digs: Students answer a series of questions related to famous ore deposits.

Dexter Perkins

196

Accessory Gene Regulator Locus of Staphylococcus intermedius  

PubMed Central

The accessory gene regulator (agr) locus, a candidate system for the regulation of the production of virulence factors in Staphylococcus intermedius, has been characterized. Using PCR-based genome walking, we have obtained the first complete sequence (3,436 bp) of the accessory gene regulator (agr) gene in this organism. Sequence analysis of the agr gene has identified five open reading frames (ORFs), agrB, agrD, agrC, agrA, and hld. The translated ORF contained amino acid motifs characteristic of the response regulator and histidine protein kinase signal transducer of the classic two-component regulatory system. Sequencing of the agrD PCR products amplified from DNA from 20 different isolates has facilitated detection of genetic variation in the putative autoinducing peptide (AIP) within the agr gene of S. intermedius, revealing the presence of at least three agr specificity groups within this species. Classification of the agr gene from S. intermedius was supported by phylogenetic analysis. Real-time PCR also revealed that the effector molecule of the agr system, RNAIII, was regulated in an autocrine manner in S. intermedius and demonstrated positive correlation with the temporal gene expression patterns of luk and entC. Transcription of RNAIII was also dependent on self secreted cues. Cyclic self and nonself peptides were synthesized on the basis of the novel AIPs produced by S. intermedius, which lack the cysteine necessary to form the thiolactone ring in analogous peptides from Staphylococcus aureus and Staphylococcus epidermidis. Experiments with these synthetic cyclic peptides indicated that self peptides led to up-regulation of RNAIII—findings in support of the assumption that activation of the agr gene is initiated by growth- and species-specific factors generated during bacterial growth. PMID:16622233

Sung, Julia M. L.; Chantler, Peter D.; Lloyd, David H.

2006-01-01

197

21 CFR 874.4720 - Mediastinoscope and accessories.  

Code of Federal Regulations, 2010 CFR

...4720 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES EAR, NOSE, AND THROAT DEVICES Surgical Devices § 874.4720 Mediastinoscope and accessories. (a)...

2010-04-01

198

21 CFR 874.4720 - Mediastinoscope and accessories.  

Code of Federal Regulations, 2011 CFR

...4720 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES EAR, NOSE, AND THROAT DEVICES Surgical Devices § 874.4720 Mediastinoscope and accessories. (a)...

2011-04-01

199

21 CFR 874.4720 - Mediastinoscope and accessories.  

Code of Federal Regulations, 2013 CFR

...4720 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES EAR, NOSE, AND THROAT DEVICES Surgical Devices § 874.4720 Mediastinoscope and accessories. (a)...

2013-04-01

200

21 CFR 874.4720 - Mediastinoscope and accessories.  

Code of Federal Regulations, 2012 CFR

...4720 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES EAR, NOSE, AND THROAT DEVICES Surgical Devices § 874.4720 Mediastinoscope and accessories. (a)...

2012-04-01

201

21 CFR 874.4720 - Mediastinoscope and accessories.  

Code of Federal Regulations, 2014 CFR

...4720 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES EAR, NOSE, AND THROAT DEVICES Surgical Devices § 874.4720 Mediastinoscope and accessories. (a)...

2014-04-01

202

26 CFR 48.4161(a)-3 - Parts and accessories.  

Code of Federal Regulations, 2010 CFR

... Internal Revenue INTERNAL REVENUE SERVICE, DEPARTMENT OF THE TREASURY (CONTINUED) MISCELLANEOUS EXCISE TAXES MANUFACTURERS AND RETAILERS EXCISE TAXES Sporting Goods § 48.4161(a)-3 Parts and accessories. (a) In general. The tax attaches with respect to parts...

2010-04-01

203

21 CFR 884.2700 - Intrauterine pressure monitor and accessories.  

Code of Federal Regulations, 2010 CFR

...Gynecological Monitoring Devices § 884.2700 Intrauterine pressure monitor and accessories...a) Identification. An intrauterine pressure monitor is a device designed to detect and measure intrauterine and amniotic fluid...

2010-04-01

204

What next for accessory dwellings? : getting from bylaws to buildings  

E-print Network

Accessory dwellings-secondary, self-contained housing units on the same property as a primary residence, either attached to or detached from the main dwelling, and subordinate in size, location and appearance-are recognized ...

Stege, Elinor Hope

2009-01-01

205

21 CFR 884.4100 - Endoscopic electrocautery and accessories.  

Code of Federal Regulations, 2012 CFR

...Sterility Review Guidance 2/12/90 (K-90),” and (iii) “Guidance (‘Guidelines’) for Evaluation of Laproscopic Bipolar and Thermal Coagulators (and Accessories),” (2) International Electrotechnical Commission's IEC 60601-1-AM2...

2012-04-01

206

21 CFR 884.4100 - Endoscopic electrocautery and accessories.  

Code of Federal Regulations, 2013 CFR

...Sterility Review Guidance 2/12/90 (K-90),” and (iii) “Guidance (‘Guidelines’) for Evaluation of Laproscopic Bipolar and Thermal Coagulators (and Accessories),” (2) International Electrotechnical Commission's IEC 60601-1-AM2...

2013-04-01

207

21 CFR 884.4100 - Endoscopic electrocautery and accessories.  

Code of Federal Regulations, 2014 CFR

...Sterility Review Guidance 2/12/90 (K-90),” and (iii) “Guidance (‘Guidelines’) for Evaluation of Laproscopic Bipolar and Thermal Coagulators (and Accessories),” (2) International Electrotechnical Commission's IEC 60601-1-AM2...

2014-04-01

208

21 CFR 884.4100 - Endoscopic electrocautery and accessories.  

Code of Federal Regulations, 2010 CFR

...Sterility Review Guidance 2/12/90 (K-90),” and (iii) “Guidance (‘Guidelines’) for Evaluation of Laproscopic Bipolar and Thermal Coagulators (and Accessories),” (2) International Electrotechnical Commission's IEC 60601-1-AM2...

2010-04-01

209

21 CFR 884.4100 - Endoscopic electrocautery and accessories.  

Code of Federal Regulations, 2011 CFR

...Sterility Review Guidance 2/12/90 (K-90),” and (iii) “Guidance (‘Guidelines’) for Evaluation of Laproscopic Bipolar and Thermal Coagulators (and Accessories),” (2) International Electrotechnical Commission's IEC 60601-1-AM2...

2011-04-01

210

19 CFR 10.600 - Accessories, spare parts, or tools.  

Code of Federal Regulations, 2010 CFR

...DEPARTMENT OF THE TREASURY ARTICLES CONDITIONALLY FREE, SUBJECT TO A REDUCED RATE, ETC. Dominican Republic-Central America-United States Free Trade Agreement Rules of Origin § 10.600 Accessories, spare parts, or tools. (a)...

2010-04-01

211

21 CFR 876.5250 - Urine collector and accessories.  

Code of Federal Regulations, 2013 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Therapeutic Devices § 876.5250 Urine collector and accessories. (a) Identification. A...

2013-04-01

212

21 CFR 876.4890 - Urological table and accessories.  

Code of Federal Regulations, 2010 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Surgical Devices § 876.4890 Urological table and accessories. (a) Identification. A...

2010-04-01

213

21 CFR 876.5900 - Ostomy pouch and accessories.  

Code of Federal Regulations, 2013 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Therapeutic Devices § 876.5900 Ostomy pouch and accessories. (a) Identification. An...

2013-04-01

214

21 CFR 876.5250 - Urine collector and accessories.  

Code of Federal Regulations, 2014 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Therapeutic Devices § 876.5250 Urine collector and accessories. (a) Identification. A...

2014-04-01

215

21 CFR 876.4890 - Urological table and accessories.  

Code of Federal Regulations, 2014 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Surgical Devices § 876.4890 Urological table and accessories. (a) Identification. A...

2014-04-01

216

21 CFR 876.5900 - Ostomy pouch and accessories.  

Code of Federal Regulations, 2010 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Therapeutic Devices § 876.5900 Ostomy pouch and accessories. (a) Identification. An...

2010-04-01

217

21 CFR 876.5010 - Biliary catheter and accessories.  

Code of Federal Regulations, 2014 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Therapeutic Devices § 876.5010 Biliary catheter and accessories. (a) Identification. A...

2014-04-01

218

21 CFR 876.5250 - Urine collector and accessories.  

Code of Federal Regulations, 2010 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Therapeutic Devices § 876.5250 Urine collector and accessories. (a) Identification. A...

2010-04-01

219

21 CFR 876.5010 - Biliary catheter and accessories.  

Code of Federal Regulations, 2010 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Therapeutic Devices § 876.5010 Biliary catheter and accessories. (a) Identification. A...

2010-04-01

220

21 CFR 876.5010 - Biliary catheter and accessories.  

Code of Federal Regulations, 2013 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Therapeutic Devices § 876.5010 Biliary catheter and accessories. (a) Identification. A...

2013-04-01

221

21 CFR 876.4890 - Urological table and accessories.  

Code of Federal Regulations, 2011 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Surgical Devices § 876.4890 Urological table and accessories. (a) Identification. A...

2011-04-01

222

21 CFR 876.5250 - Urine collector and accessories.  

Code of Federal Regulations, 2012 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Therapeutic Devices § 876.5250 Urine collector and accessories. (a) Identification. A...

2012-04-01

223

21 CFR 876.5900 - Ostomy pouch and accessories.  

Code of Federal Regulations, 2012 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Therapeutic Devices § 876.5900 Ostomy pouch and accessories. (a) Identification. An...

2012-04-01

224

21 CFR 876.4890 - Urological table and accessories.  

Code of Federal Regulations, 2012 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Surgical Devices § 876.4890 Urological table and accessories. (a) Identification. A...

2012-04-01

225

21 CFR 876.5900 - Ostomy pouch and accessories.  

Code of Federal Regulations, 2011 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Therapeutic Devices § 876.5900 Ostomy pouch and accessories. (a) Identification. An...

2011-04-01

226

21 CFR 876.5900 - Ostomy pouch and accessories.  

Code of Federal Regulations, 2014 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Therapeutic Devices § 876.5900 Ostomy pouch and accessories. (a) Identification. An...

2014-04-01

227

21 CFR 876.4890 - Urological table and accessories.  

Code of Federal Regulations, 2013 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Surgical Devices § 876.4890 Urological table and accessories. (a) Identification. A...

2013-04-01

228

21 CFR 876.5540 - Blood access device and accessories.  

Code of Federal Regulations, 2013 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Therapeutic Devices § 876.5540 Blood access device and accessories. (a) Identification....

2013-04-01

229

21 CFR 876.5250 - Urine collector and accessories.  

Code of Federal Regulations, 2011 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Therapeutic Devices § 876.5250 Urine collector and accessories. (a) Identification. A...

2011-04-01

230

21 CFR 876.5540 - Blood access device and accessories.  

Code of Federal Regulations, 2010 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Therapeutic Devices § 876.5540 Blood access device and accessories. (a) Identification....

2010-04-01

231

21 CFR 878.1800 - Speculum and accessories.  

Code of Federal Regulations, 2010 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GENERAL AND PLASTIC SURGERY DEVICES Diagnostic Devices § 878.1800 Speculum and accessories. (a) Identification. A...

2010-04-01

232

21 CFR 878.4160 - Surgical camera and accessories.  

Code of Federal Regulations, 2010 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GENERAL AND PLASTIC SURGERY DEVICES Surgical Devices § 878.4160 Surgical camera and accessories. (a) Identification. A...

2010-04-01

233

19 CFR 10.1020 - Accessories, spare parts, or tools.  

Code of Federal Regulations, 2014 CFR

...HOMELAND SECURITY; DEPARTMENT OF THE TREASURY ARTICLES CONDITIONALLY FREE, SUBJECT TO A REDUCED RATE, ETC. United States-Korea Free Trade Agreement Rules of Origin § 10.1020 Accessories, spare parts, or tools. (a) General....

2014-04-01

234

21 CFR 872.3980 - Endosseous dental implant accessories.  

Code of Federal Regulations, 2013 CFR

... MEDICAL DEVICES DENTAL DEVICES Prosthetic Devices § 872.3980 Endosseous...abutments, aid in the fabrication of dental prosthetics, and be used as an accessory with...pieces used for fabrication of dental prosthetics, and trial abutments. (b)...

2013-04-01

235

21 CFR 872.3980 - Endosseous dental implant accessories.  

Code of Federal Regulations, 2011 CFR

... MEDICAL DEVICES DENTAL DEVICES Prosthetic Devices § 872.3980 Endosseous...abutments, aid in the fabrication of dental prosthetics, and be used as an accessory with...pieces used for fabrication of dental prosthetics, and trial abutments. (b)...

2011-04-01

236

21 CFR 886.1930 - Tonometer and accessories.  

Code of Federal Regulations, 2010 CFR

...flat disk to the cornea). Accessories for the device may include a tonometer calibrator or a tonograph recording system. The device is intended for use in the diagnosis of glaucoma. (b) Classification. Class...

2010-04-01

237

21 CFR 886.1930 - Tonometer and accessories.  

Code of Federal Regulations, 2014 CFR

...flat disk to the cornea). Accessories for the device may include a tonometer calibrator or a tonograph recording system. The device is intended for use in the diagnosis of glaucoma. (b) Classification. Class...

2014-04-01

238

21 CFR 886.1930 - Tonometer and accessories.  

Code of Federal Regulations, 2013 CFR

...flat disk to the cornea). Accessories for the device may include a tonometer calibrator or a tonograph recording system. The device is intended for use in the diagnosis of glaucoma. (b) Classification. Class...

2013-04-01

239

21 CFR 886.1930 - Tonometer and accessories.  

Code of Federal Regulations, 2012 CFR

...flat disk to the cornea). Accessories for the device may include a tonometer calibrator or a tonograph recording system. The device is intended for use in the diagnosis of glaucoma. (b) Classification. Class...

2012-04-01

240

21 CFR 884.2660 - Fetal ultrasonic monitor and accessories.  

Code of Federal Regulations, 2012 CFR

...time (e.g., perinatal monitoring during labor) or in an immediately perceptible form (e.g., use of the ultrasonic stethoscope). This generic type of device may include the following accessories: signal analysis and display equipment,...

2012-04-01

241

21 CFR 884.2660 - Fetal ultrasonic monitor and accessories.  

Code of Federal Regulations, 2014 CFR

...time (e.g., perinatal monitoring during labor) or in an immediately perceptible form (e.g., use of the ultrasonic stethoscope). This generic type of device may include the following accessories: signal analysis and display equipment,...

2014-04-01

242

21 CFR 878.3925 - Plastic surgery kit and accessories.  

Code of Federal Regulations, 2012 CFR

A plastic surgery kit and accessories is a device intended to be used to reconstruct maxillofacial deficiencies. The kit contains surgical instruments and materials used to make maxillofacial impressions before molding an external prosthesis. (b) Classification. Class I (general...

2012-04-01

243

21 CFR 878.3925 - Plastic surgery kit and accessories.  

Code of Federal Regulations, 2013 CFR

A plastic surgery kit and accessories is a device intended to be used to reconstruct maxillofacial deficiencies. The kit contains surgical instruments and materials used to make maxillofacial impressions before molding an external prosthesis. (b) Classification. Class I (general...

2013-04-01

244

21 CFR 878.3925 - Plastic surgery kit and accessories.  

Code of Federal Regulations, 2014 CFR

A plastic surgery kit and accessories is a device intended to be used to reconstruct maxillofacial deficiencies. The kit contains surgical instruments and materials used to make maxillofacial impressions before molding an external prosthesis. (b) Classification. Class I (general...

2014-04-01

245

21 CFR 878.3925 - Plastic surgery kit and accessories.  

Code of Federal Regulations, 2011 CFR

A plastic surgery kit and accessories is a device intended to be used to reconstruct maxillofacial deficiencies. The kit contains surgical instruments and materials used to make maxillofacial impressions before molding an external prosthesis. (b) Classification. Class I (general...

2011-04-01

246

21 CFR 878.3925 - Plastic surgery kit and accessories.  

Code of Federal Regulations, 2010 CFR

A plastic surgery kit and accessories is a device intended to be used to reconstruct maxillofacial deficiencies. The kit contains surgical instruments and materials used to make maxillofacial impressions before molding an external prosthesis. (b) Classification. Class I (general...

2010-04-01

247

21 CFR 872.5410 - Orthodontic appliance and accessories.  

Code of Federal Regulations, 2011 CFR

...appliance and accessories is a device intended for use in orthodontic treatment. The device is affixed to a tooth so that pressure can be exerted on the teeth. This device includes the preformed orthodontic band, orthodontic band material,...

2011-04-01

248

21 CFR 884.1640 - Culdoscope and accessories.  

Code of Federal Regulations, 2011 CFR

...instrument or device delivery system; do not have adapters, connectors, channels, or do not have portals for electrosurgical, laser, or other power sources. Such culdoscope accessory instruments include: lens cleaning brush, biopsy brush, clip...

2011-04-01

249

21 CFR 884.1690 - Hysteroscope and accessories.  

Code of Federal Regulations, 2013 CFR

...instrument or device delivery system; do not have adapters, connectors, channels, or do not have portals for electrosurgical, laser, or other power sources. Such hysteroscope accessory instruments include: lens cleaning brush, cannula (without...

2013-04-01

250

21 CFR 884.1640 - Culdoscope and accessories.  

Code of Federal Regulations, 2013 CFR

...instrument or device delivery system; do not have adapters, connectors, channels, or do not have portals for electrosurgical, laser, or other power sources. Such culdoscope accessory instruments include: lens cleaning brush, biopsy brush, clip...

2013-04-01

251

21 CFR 884.1690 - Hysteroscope and accessories.  

Code of Federal Regulations, 2014 CFR

...instrument or device delivery system; do not have adapters, connectors, channels, or do not have portals for electrosurgical, laser, or other power sources. Such hysteroscope accessory instruments include: lens cleaning brush, cannula (without...

2014-04-01

252

21 CFR 884.1690 - Hysteroscope and accessories.  

Code of Federal Regulations, 2012 CFR

...instrument or device delivery system; do not have adapters, connectors, channels, or do not have portals for electrosurgical, laser, or other power sources. Such hysteroscope accessory instruments include: lens cleaning brush, cannula (without...

2012-04-01

253

21 CFR 884.1720 - Gynecologic laparoscope and accessories.  

Code of Federal Regulations, 2013 CFR

...instrument or device delivery system, do not have adapters, connector channels, or do not have portals for electrosurgical, lasers, or other power sources. Such gynecologic laparosope accessory instruments include: the lens cleaning brush,...

2013-04-01

254

21 CFR 884.1690 - Hysteroscope and accessories.  

Code of Federal Regulations, 2010 CFR

...instrument or device delivery system; do not have adapters, connectors, channels, or do not have portals for electrosurgical, laser, or other power sources. Such hysteroscope accessory instruments include: lens cleaning brush, cannula (without...

2010-04-01

255

21 CFR 884.1720 - Gynecologic laparoscope and accessories.  

Code of Federal Regulations, 2010 CFR

...instrument or device delivery system, do not have adapters, connector channels, or do not have portals for electrosurgical, lasers, or other power sources. Such gynecologic laparosope accessory instruments include: the lens cleaning brush,...

2010-04-01

256

21 CFR 878.4700 - Surgical microscope and accessories.  

Code of Federal Regulations, 2013 CFR

...SERVICES (CONTINUED) MEDICAL DEVICES GENERAL AND PLASTIC SURGERY DEVICES Surgical Devices § 878.4700 Surgical microscope...accessories is an AC-powered device intended for use during surgery to provide a magnified view of the surgical field....

2013-04-01

257

21 CFR 878.4700 - Surgical microscope and accessories.  

Code of Federal Regulations, 2012 CFR

...SERVICES (CONTINUED) MEDICAL DEVICES GENERAL AND PLASTIC SURGERY DEVICES Surgical Devices § 878.4700 Surgical microscope...accessories is an AC-powered device intended for use during surgery to provide a magnified view of the surgical field....

2012-04-01

258

21 CFR 878.4370 - Surgical drape and drape accessories.  

Code of Federal Regulations, 2012 CFR

... FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GENERAL AND PLASTIC SURGERY DEVICES Surgical Devices § 878.4370 Surgical drape and drape accessories. (a) Identification. A...

2012-04-01

259

21 CFR 878.4370 - Surgical drape and drape accessories.  

Code of Federal Regulations, 2014 CFR

... FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GENERAL AND PLASTIC SURGERY DEVICES Surgical Devices § 878.4370 Surgical drape and drape accessories. (a) Identification. A...

2014-04-01

260

21 CFR 878.1800 - Speculum and accessories.  

Code of Federal Regulations, 2012 CFR

... FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GENERAL AND PLASTIC SURGERY DEVICES Diagnostic Devices § 878.1800 Speculum and accessories. (a) Identification. A speculum is a...

2012-04-01

261

21 CFR 878.1800 - Speculum and accessories.  

Code of Federal Regulations, 2011 CFR

... FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GENERAL AND PLASTIC SURGERY DEVICES Diagnostic Devices § 878.1800 Speculum and accessories. (a) Identification. A speculum is a...

2011-04-01

262

21 CFR 878.4370 - Surgical drape and drape accessories.  

Code of Federal Regulations, 2013 CFR

... FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GENERAL AND PLASTIC SURGERY DEVICES Surgical Devices § 878.4370 Surgical drape and drape accessories. (a) Identification. A...

2013-04-01

263

21 CFR 878.4160 - Surgical camera and accessories.  

Code of Federal Regulations, 2014 CFR

... FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GENERAL AND PLASTIC SURGERY DEVICES Surgical Devices § 878.4160 Surgical camera and accessories. (a) Identification. A surgical...

2014-04-01

264

21 CFR 878.4160 - Surgical camera and accessories.  

Code of Federal Regulations, 2011 CFR

... FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GENERAL AND PLASTIC SURGERY DEVICES Surgical Devices § 878.4160 Surgical camera and accessories. (a) Identification. A surgical...

2011-04-01

265

21 CFR 878.1800 - Speculum and accessories.  

Code of Federal Regulations, 2014 CFR

... FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GENERAL AND PLASTIC SURGERY DEVICES Diagnostic Devices § 878.1800 Speculum and accessories. (a) Identification. A speculum is a...

2014-04-01

266

21 CFR 878.4700 - Surgical microscope and accessories.  

Code of Federal Regulations, 2014 CFR

...SERVICES (CONTINUED) MEDICAL DEVICES GENERAL AND PLASTIC SURGERY DEVICES Surgical Devices § 878.4700 Surgical microscope...accessories is an AC-powered device intended for use during surgery to provide a magnified view of the surgical field....

2014-04-01

267

21 CFR 878.4160 - Surgical camera and accessories.  

Code of Federal Regulations, 2012 CFR

... FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GENERAL AND PLASTIC SURGERY DEVICES Surgical Devices § 878.4160 Surgical camera and accessories. (a) Identification. A surgical...

2012-04-01

268

21 CFR 878.1800 - Speculum and accessories.  

Code of Federal Regulations, 2013 CFR

... FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GENERAL AND PLASTIC SURGERY DEVICES Diagnostic Devices § 878.1800 Speculum and accessories. (a) Identification. A speculum is a...

2013-04-01

269

21 CFR 878.4370 - Surgical drape and drape accessories.  

Code of Federal Regulations, 2011 CFR

... FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GENERAL AND PLASTIC SURGERY DEVICES Surgical Devices § 878.4370 Surgical drape and drape accessories. (a) Identification. A...

2011-04-01

270

21 CFR 878.4160 - Surgical camera and accessories.  

Code of Federal Regulations, 2013 CFR

... FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GENERAL AND PLASTIC SURGERY DEVICES Surgical Devices § 878.4160 Surgical camera and accessories. (a) Identification. A surgical...

2013-04-01

271

Oxide minerals in lithic fragments from Luna 20 fines.  

NASA Technical Reports Server (NTRS)

One hundred seventy-six oxide mineral grains in the Luna 20 samples were analyzed by electron microprobe. Spinel is the most abundant oxide, occurring in troctolite fragments. Next most abundant is ilmenite, which occurs in all rock types except those containing spinel. Chromite also occurs in all rock types except those containing spinel. Minor amounts of ulvospinel, armalcolite, zirkelite, baddeleyite and an unidentified TiO2-rich phase were also found. Spinel grains are predominantly spinel-hercynite solid solutions, commonly with very minor chromite. The Fe/(Fe + Mg) ratio is generally lower than in spinel from Apollo 14 rocks. Chromites in non-mare rocks are similar to those from mare rocks. Ilmenite of mare origin is Mg-poor and Zr-rich compared to non-mare ilmenite; these elements may therefore be useful in determining the origin of ilmenite grains. Phase equilibria considerations suggest that spinel troctolite crystallized from a melt high in alumina; a likely candidate is the high-alumina basalt of Prinz et al. (1973).

Brett, R.; Gooley, R. C.; Dowty, E.; Prinz, M.; Keil, K.

1973-01-01

272

Mineral Classification  

NSDL National Science Digital Library

This problem set challenges students to determine the chemical classification of minerals based on their chemical formula (provided). For oxygen-bearing minerals, students must also provide the valences of the various cations.

273

Oscillatory-zoned crystals of pyrochlore-group minerals from the Guaniamo kimberlites, Venezuela  

NASA Astrophysics Data System (ADS)

Oscillatory-zoned crystals of pyrochlore-group minerals are found in the La Ceniza diamondiferous kimberlites, Guaniamo region, Venezuela. This is the first known occurrence of the pyrochlore-group minerals in kimberlites worldwide. The minerals occur in the kimberlite groundmass in association with olivine, zoned spinel, phlogopite, carbonates (dolomite, calcite, magnesite), apatite, tetraferriphlogopite, Fe-Ni-Cu-sulfides and serpentine. They form discrete octahedral crystals or intergrowths (up to 50 ?m) with a red-brown core and light brown rim. Individual zones in the cores are remarkably enriched in TiO 2 (up to 14.3 wt.%), Ta 2O 5 (up to 10.1 wt.%), ZrO 2 (up to 23.7 wt.%), ThO 2 (up to 22.3 wt.%) and UO 2 (up to 8.0 wt.%) at moderate Nb 2O 5 contents, whereas the outer regions contain significant CaO (up to 17.5 wt.%), Na 2O (up to 5.7 wt.%), Nb 2O 5 (up to 58.9 wt.%) and F (up to 4.6 wt.%), approaching the ideal formula (Na,Ca) 2Nb 2O 6F. Following the IMA recommendations and the "50% rule", the interior is classified as uranoan Zr-rich thoriobetafite/thoriopyrochlore or thorian Zr-rich betafite/pyrochlore, and the outer part as pyrochlore or thorian pyrochlore. Strong compositional zoning is consistent with two substitutions: 2(Th,U) 4+ + ? + (Ti,Zr) 4+ + O 2- ? 3Ca 2+ + Nb 5+ + (F,OH) - and 2(Th,U) 4+ + ? + 2(Ti,Zr) 4+ + O 2- ? 2Ca 2+ + Na + + 2Nb 5+ + (F,OH) -. The zoning patterns and the absence of perovskite indicate the dominant role of F among fluid components and relatively high alkalinity during crystallization of the silicate-carbonate groundmass of the La Ceniza kimberlite. The composition and zoning of the La Ceniza pyrochlore-group minerals are very specific, but in general strongly resemble those of some pyrochlores from carbonatites.

Sharygin, Victor V.; Sobolev, Nikolai V.; Channer, Dominic M. DeR.

2009-11-01

274

Choosing the correct accessory for each stoma type: an update.  

PubMed

There are many people with a stoma that report a good quality of life. However, for many, problems can be encountered that can directly affect them. The use of a stoma accessory, in addition to the stoma appliance, can often benefit people with a stoma in relation to treating sore skin or preventing appliances from leakage. This article focuses on some of the more common stoma accessories, including when and why they should be used. PMID:24037328

Burch, Jennie

275

Bidirectional cavopulmonary shunt: is accessory pulsatile flow, good or bad?  

Microsoft Academic Search

Objective: Evaluation of the effect and long-term outcome of accessory pulsatile blood flow versus classical bi-directional cavopulmonary connection (BCPC). Methods: Retrospective review of the medical and surgical records. Results: Two-hundred and five patients (119 boys, 86 girls) underwent BCPC from 1990 to 1996. Accessory pulsatile flow was present in 68%, flow being maintained through the pulmonary trunc in 46%, systemic-to-pulmonary

Henry J. C. M. van de Wal; Ruth Ouknine; Daniel Tamisier; Marilyne Lévy; Pascal R. Vouhé; Francine Leca

1999-01-01

276

Mineral Properties  

NSDL National Science Digital Library

You will learn about the properties that will help you identify minerals. If you closed your eyes and tasted different foods, you could probably determine what the foods are by noting properties such as saltiness or sweetness. You can also determine the identity of a mineral by noting different properties. Some properties that help us determine the identy of a mineral are: COLOR, ...

Mr. Wood

2010-11-14

277

Mineral Properties  

NSDL National Science Digital Library

This site from the Mineralogical Society of America describes the physical properties of minerals in terms that kids will understand. The site also includes the definition of a mineral, an identification chart, and links to descriptions of the physical properties used to identify minerals.

Mineralogy 4 Kids

278

Mineral Chart  

MedlinePLUS

... Healthy Weight: Your Personal Plan Dealing With Anger Mineral Chart KidsHealth > Teens > Miscellaneous > Mineral Chart Print A A A Text Size Type ... sources of calcium. You'll also find this mineral in broccoli and dark green, leafy vegetables. Soy ...

279

Rare accessory uraninite in a Sierran granite  

NASA Technical Reports Server (NTRS)

One grain of uraninite was found in a single thin-section of Sierran granite. Electron and ion microprobe analysis were used to determine the composition. Since the U-Pb age calculated for the uraninite does not differ greatly from the K-Ar age of the unit in which it occurs, it is suggested that the mineral is primary and not reworked from a preexisting rock. No uraninite has been detected in heavy mineral concentrates from other rocks of the local area.

Snetsinger, K. G.; Polkowski, G.

1977-01-01

280

Review of accessory tragus with highlights of its associated syndromes.  

PubMed

Accessory tragus is a developmental defect involving malformation of part of the external ear. It is a moderately rare congenital condition reported in 1858 by Birkett for the first time. Histological features of accessory tragus include a thin layer of stratum corneum with a rugated epidermis, presence of eccrine glands, and irregular spatial positioning of vellus hair follicles accompanied by sebaceous glands. Accessory tragus is commonly a limited deformity; however, it can be a sign of associated congenital syndromes. It has been shown to be associated with Goldenhar syndrome, Townes-Brocks syndrome, Treacher-Collins syndrome, VACTERL syndrome, and Wolf-Hirschhron syndrome. Surgical excision, the most common form of management of accessory tragus lesions, typically leads to a positive outcome. An extensive search was performed using pubmed.gov, Embase, MedLine, and Googlescholar.com using key words: accessory tragus, congenital malformations of ear, first branchial arch, and embryology. In this paper, we review the clinical and histological presentation, associated syndromes, management, and outcome of accessory tragus. PMID:25266223

Bahrani, Bahar; Khachemoune, Amor

2014-12-01

281

An unusual cause of subtalar pain and instability: accessory calcaneus.  

PubMed

We report on a 45-yr-old male sports instructor with chronic pain and instability of the ankle. He was a recreational basketball player, but because of repeated ankle sprains and chronic subtalar pain this activity became impossible. The radiologic findings were compatible with the diagnosis of accessory calcaneus. In an initial therapeutic approach the patient was treated conservatively with taping and physical therapy, but this failed to relieve the symptoms. Next, a ligamentoplasty was performed. The instability improved, but the pain remained the same. Finally the accessory calcaneus was resected and short term follow-up was unremarkable. Accessory calcaneus is an uncommon anatomical variation that may cause subtalar pain and instability. Resection of the accessory bone may be necessary to provide relief of symptoms. Accessory calcaneus can be well demonstrated on CT, SPECT-CT, and MR. MR and nuclear medicine can indicate instability of the accessory bone by showing bone marrow edema on MR or uptake on fusion imaging. PMID:23405487

Boulet, C; De Maeseneer, M; Everaert, H; Kichouh, M; De Mey, J; Shahabpour, M

2012-01-01

282

The accessory foramen ovale of the skull: an osteological study.  

PubMed

The sphenoid bone is known to have several foramina and the foramen ovale is one amongst them. The foramen ovale transmits the mandibular nerve, accessory meningeal artery, lesser petrosal nerve and the emissary veins. There have been past reports on the variations of the different foramina present in the skull but there are no reports on the variations of the skull foramina from any of the South-East Asian countries. The present study aims to highlight the presence of an accessory foramen ovale in the skull in Malaysian population. Both sides of fifteen adult skulls (n = 30) were taken for observation of any variations in the foramen ovale. We observed the presence of accessory foramen ovale on the left side of a single skull (3.33%). The minute accessory foramen ovale was located 0.1 cm medial to the normal foramen ovale. The anomalous accessory foramen ovale was circular in shape and measured 0.1 cm in diameter. Anatomical knowledge of the foramen ovale is important for all neurosurgical procedures involving the trigeminal nerve and administration of anaesthesia in the mandibular nerve. Interestingly, the percutaneous biopsy of the cavernous sinus is also performed through the foramen ovale. Prior knowledge of the presence of an accessory foramen ovale may be important for academic, anthropological, forensic and clinical purpose and the present study aims to highlight such. PMID:19795082

Abd Latiff, A; Das, S; Sulaiman, I Maatoq; Hlaing, K Pa Pa; Suhaimi, F Haji; Ghazalli, H; Othman, F

2009-01-01

283

Alternative delivery of male accessory gland products  

PubMed Central

To increase fertilization success, males transfer accessory gland products (Acps). Several species have evolved unconventional Acps transfer modes, meaning that Acps are transferred separately from the sperm. By surveying the sperm-free Acps transfer cases, we show that these animals have evolved a common strategy to deliver Acps: they all inject Acps directly through the partner’s body wall into the hemolymph. Our review of this mode of Acps transfer reveals another striking similarity: they all transfer sperm in packages or via the skin, which may leave little room for Acps transfer via the conventional route in seminal fluid. We synthesise the knowledge about the function, and the effects in the recipients, of the Acps found in the widely diverse taxa (including earthworms, sea slugs, terrestrial snails, scorpions and salamanders) that inject these substances. Despite the clearly independent evolution of the injection devices, these animals have evolved a common alternative strategy to get their partners to accept and/or use their sperm. Most importantly, the evolution of the injection devices for the delivery of Acps highlights how the latter are pivotal for male reproductive success and, hence, strongly influence sexual selection. PMID:24708537

2014-01-01

284

Alternative delivery of male accessory gland products.  

PubMed

To increase fertilization success, males transfer accessory gland products (Acps). Several species have evolved unconventional Acps transfer modes, meaning that Acps are transferred separately from the sperm. By surveying the sperm-free Acps transfer cases, we show that these animals have evolved a common strategy to deliver Acps: they all inject Acps directly through the partner's body wall into the hemolymph. Our review of this mode of Acps transfer reveals another striking similarity: they all transfer sperm in packages or via the skin, which may leave little room for Acps transfer via the conventional route in seminal fluid. We synthesise the knowledge about the function, and the effects in the recipients, of the Acps found in the widely diverse taxa (including earthworms, sea slugs, terrestrial snails, scorpions and salamanders) that inject these substances. Despite the clearly independent evolution of the injection devices, these animals have evolved a common alternative strategy to get their partners to accept and/or use their sperm. Most importantly, the evolution of the injection devices for the delivery of Acps highlights how the latter are pivotal for male reproductive success and, hence, strongly influence sexual selection. PMID:24708537

Zizzari, Z Valentina; Smolders, Irene; Koene, Joris M

2014-01-01

285

Mineral Identification  

NSDL National Science Digital Library

Imagine you are hiking with your family and this shiney looking crystal catches your eye. You bring it home and no one in your family is able to tell you what it is. How do you find out? First you need to practice. Identifying minerals. Click on the following link. Identify all five minerals. On your peice of paper tell me their Name Color Luster Cleavage/Fracture Hardness Glenco simple mineral identification Now try and identify 7 real minerals using a virtual key. Answer the following questions What properties do you use to identify the mineral? Which ...

rmesser

2010-11-16

286

Mineral Identification  

NSDL National Science Digital Library

This lesson discusses the question 'What is a mineral?' in the context of the guessing game 'Animal, Vegetable, or Mineral?'. It introduces a definition of the term, discusses the criteria used in the definition, and presents the common physical properties used in mineral identification. The lesson includes an activity in which students observe and record the physical properties of ten specimens and attempt to identify them using an online reference for practice.

John Pratte

287

The extensive set of accessory Pseudomonas aeruginosa genomic components.  

PubMed

Up to 20% of the chromosomal Pseudomonas aeruginosa DNA belong to the so-called accessory genome. Its elements are specific for subgroups or even single strains and are likely acquired by horizontal gene transfer (HGT). Similarities of the accessory genomic elements to DNA from other bacterial species, mainly the DNA of ?- and ?-proteobacteria, indicate a role of interspecies HGT. In this study, we analysed the expression of the accessory genome in 150 clinical P. aeruginosa isolates as uncovered by transcriptome sequencing and the presence of accessory genes in eleven additional isolates. Remarkably, despite the large number of P. aeruginosa strains that have been sequenced to date, we found new strain-specific compositions of accessory genomic elements and a high portion (10-20%) of genes without P. aeruginosa homologues. Although some genes were detected to be expressed/present in several isolates, individual patterns regarding the genes, their functions and the possible origin of the DNA were widespread among the tested strains. Our results demonstrate the unaltered potential to discover new traits within the P. aeruginosa population and underline that the P. aeruginosa pangenome is likely to increase with increasing sequence information. PMID:24766399

Pohl, Sarah; Klockgether, Jens; Eckweiler, Denitsa; Khaledi, Ariane; Schniederjans, Monika; Chouvarine, Philippe; Tümmler, Burkhard; Häussler, Susanne

2014-07-01

288

Stoma appliances and accessories: getting it right for the patient.  

PubMed

This article will examine some of the appliances and accessories that can be used to care for a stoma. There are three types of stoma that can be surgically formed and each will be discussed. Furthermore, there will be brief explanations of why stomas might be formed and what the output from each stoma type will be. Complications are associated with stomas, such as sore skin, which is commonly seen within the first few months after the stoma is formed. This important topic is examined and some of the accessories that can be used to treat these issues will be explored. To aid the reader to undertake their own research on the topic, the websites from some of the stoma manufacturers are included. These websites contain more details about appliances, accessories and information for people with a stoma that can be of benefit to nurses too. PMID:25251316

Burch, Jennie

2014-09-24

289

Mineral Densities  

NSDL National Science Digital Library

Students are given cubic cell edge dimensions and asked to calculate mineral densities and vice versa. The final question of this homework assignment provides students with a mineral density and unit cell edge length in order to determine the number of formula units per cell.

290

Mineral Identification  

NSDL National Science Digital Library

In this activity, students use written and online materials to answer a set of questions on the general properties and identification of minerals. They will learn about physical properties such as color, hardness, and cleavage; special properties such as fluorescence and effervescence; and complete a chart listing properties for a selection of minerals. Links to the necessary information are provided.

Michael Passow

291

Mineral Hunt  

NSDL National Science Digital Library

In this activity, learners search for various kinds of items made from minerals around their home or school, including toothpaste, wall paint, kitty litter, and bricks. The PDF contains a check off list as well as recommended sites for more information on minerals.

Lawrence Hall of Science

2010-01-01

292

Mystery Minerals  

NSDL National Science Digital Library

In this activity, students will discover that minerals have specific characteristics that help to identify them. They will learn that minerals are formed by inorganic processes, are crystalline solids with an internal orderly arrangement of atoms, have specific chemical compositions, and have specific physical and chemical characteristics. They will also learn that minerals are commonly identified by the physical properties they possess, such as hardness, color, crystal shape, specific gravity, and streak. In addition, they will discover some other useful properties such as reaction with hydrochloric acid or a characteristic taste. They should also understand that color is not always a useful property for identifying minerals because it can vary. The students will also develop listening and observational skills and learn the uses of a few common minerals.

Susan Morgan

293

An Accessory Peroneocalcaneus Internus Muscle with MRI and US Correlation  

PubMed Central

The peroneocalcaneus internus (PCI) is a rare accessory muscle of the medial ankle with typical MRI anatomic features allowing differentiation from the more common accessory flexor digitorum longus muscle. To our knowledge, there have been no previously published sonographic images of the peroneocalcaneus internus. A PCI is typically an incidental, asymptomatic finding, but knowledge of the entity may avoid confusion when initially encountered by diagnostic ultrasound. We review the anatomic imaging features which allow for a confident imaging diagnosis and the clinical relevance of this anomaly. PMID:23378873

Howe, Benjamin Matthew; Murthy, Naveen Srinivasa

2012-01-01

294

Osteochondrosis of the accessory ossification centre of the medial malleolus.  

PubMed

We report a case of a painful accessory ossification centre of the medial malleolus in an 11-year-old girl who was not involved in sports activities. The patient was treated conservatively, with complete clinical and radiographic healing of the medial malleolus 6 months after the first presentation. We ruled out the uncommon pathological conditions causing chronic pain in the medial malleolus during skeletal growth, such as traction apophysitis of the medial malleolus, osteochondrosis, osteochondritis or avascular necrosis of the distal tibial epiphysis. We speculate that this painful condition may be classified as an osteochondrosis of the accessory ossification centre of the medial malleolus. PMID:25438106

Farsetti, Pasquale; Dragoni, Massimiliano; Potenza, Vito; Caterini, Roberto

2015-01-01

295

Inadequate detection of accessory spleens and splenosis with laparoscopic splenectomy  

Microsoft Academic Search

Background: The ultimate goal of surgery for hematological disorders is the complete removal of both the spleen and accessory spleens\\u000a in order to avoid recurrence of the disease. Whereas splenectomy by open surgery provides excellent results, the validity\\u000a of laparoscopic splenectomy in this regard remains unknown.\\u000a \\u000a \\u000a \\u000a \\u000a Objective: The purpose of this study was to evaluate the detection of accessory spleens

J.-F. Gigot; F. Jamar; A. Ferrant; B. E. van Beers; B. Lengele; S. Pauwels; J. Pringot; P.-J. Kestens; P. Gianello; R. Detry

1998-01-01

296

77 FR 5420 - Airworthiness Directives; Aeronautical Accessories Inc. High Landing Gear Aft Crosstube Assembly  

Federal Register 2010, 2011, 2012, 2013, 2014

...Aeronautical Accessories Inc. High Landing Gear Aft Crosstube Assembly AGENCY: Federal...Accessories Inc. (AAI) High Landing Gear Aft Crosstube Assembly (aft crosstube...of a crosstube, collapse of the landing gear, and subsequent loss of control of...

2012-02-03

297

77 FR 67261 - Airworthiness Directives; Aeronautical Accessories, Inc., High Landing Gear Forward Crosstube...  

Federal Register 2010, 2011, 2012, 2013, 2014

...Aeronautical Accessories, Inc., High Landing Gear Forward Crosstube Assembly AGENCY: Federal...Accessories, Inc. (AAI) high landing gear forward crosstube assemblies (crosstubes...of a crosstube, collapse of the landing gear, and subsequent loss of control of...

2012-11-09

298

77 FR 37768 - Airworthiness Directives; Aeronautical Accessories, Inc., High Landing Gear Aft Crosstube Assembly  

Federal Register 2010, 2011, 2012, 2013, 2014

...Aeronautical Accessories, Inc., High Landing Gear Aft Crosstube Assembly AGENCY: Federal...Accessories, Inc. (AAI), High Landing Gear Aft Crosstube Assembly (aft crosstube...of a crosstube, collapse of the landing gear, and subsequent loss of control of...

2012-06-25

299

77 FR 27663 - Airworthiness Directives; Aeronautical Accessories, Inc. High Landing Gear Forward Crosstube...  

Federal Register 2010, 2011, 2012, 2013, 2014

...Aeronautical Accessories, Inc. High Landing Gear Forward Crosstube Assembly AGENCY: Federal...Accessories, Inc. (AAI) high landing gear forward crosstube assemblies (crosstubes...of a crosstube, collapse of the landing gear, and subsequent loss of control of...

2012-05-11

300

22 CFR 121.8 - End-items, components, accessories, attachments, parts, firmware, software, and systems.  

Code of Federal Regulations, 2014 CFR

...accessories, attachments, parts, firmware, software, and systems. 121.8 Section 121...accessories, attachments, parts, firmware, software, and systems. (a) An end-item...is not limited to circuits into which software has been programmed. (f)...

2014-04-01

301

22 CFR 121.8 - End-items, components, accessories, attachments, parts, firmware, software and systems.  

Code of Federal Regulations, 2013 CFR

...accessories, attachments, parts, firmware, software and systems. 121.8 Section 121...accessories, attachments, parts, firmware, software and systems. (a) An end-item...is not limited to circuits into which software has been programmed. (f)...

2013-04-01

302

22 CFR 121.8 - End-items, components, accessories, attachments, parts, firmware, software and systems.  

Code of Federal Regulations, 2011 CFR

...accessories, attachments, parts, firmware, software and systems. 121.8 Section 121...accessories, attachments, parts, firmware, software and systems. (a) An end-item...is not limited to circuits into which software has been programmed. (f)...

2011-04-01

303

22 CFR 121.8 - End-items, components, accessories, attachments, parts, firmware, software and systems.  

Code of Federal Regulations, 2010 CFR

...accessories, attachments, parts, firmware, software and systems. 121.8 Section 121...accessories, attachments, parts, firmware, software and systems. (a) An end-item...is not limited to circuits into which software has been programmed. (f)...

2010-04-01

304

22 CFR 121.8 - End-items, components, accessories, attachments, parts, firmware, software and systems.  

Code of Federal Regulations, 2012 CFR

...accessories, attachments, parts, firmware, software and systems. 121.8 Section 121...accessories, attachments, parts, firmware, software and systems. (a) An end-item...is not limited to circuits into which software has been programmed. (f)...

2012-04-01

305

21 CFR 884.4150 - Bipolar endoscopic coagulator-cutter and accessories.  

Code of Federal Regulations, 2013 CFR

...2013-04-01 2013-04-01 false Bipolar endoscopic coagulator-cutter and accessories...Gynecological Surgical Devices § 884.4150 Bipolar endoscopic coagulator-cutter and accessories. (a) Identification. A bipolar endoscopic...

2013-04-01

306

21 CFR 884.4150 - Bipolar endoscopic coagulator-cutter and accessories.  

Code of Federal Regulations, 2011 CFR

...2011-04-01 2011-04-01 false Bipolar endoscopic coagulator-cutter and accessories...Gynecological Surgical Devices § 884.4150 Bipolar endoscopic coagulator-cutter and accessories. (a) Identification. A bipolar endoscopic...

2011-04-01

307

21 CFR 884.4150 - Bipolar endoscopic coagulator-cutter and accessories.  

Code of Federal Regulations, 2010 CFR

...2010-04-01 2010-04-01 false Bipolar endoscopic coagulator-cutter and accessories...Gynecological Surgical Devices § 884.4150 Bipolar endoscopic coagulator-cutter and accessories. (a) Identification. A bipolar endoscopic...

2010-04-01

308

21 CFR 884.4150 - Bipolar endoscopic coagulator-cutter and accessories.  

Code of Federal Regulations, 2014 CFR

...2014-04-01 2014-04-01 false Bipolar endoscopic coagulator-cutter and accessories...Gynecological Surgical Devices § 884.4150 Bipolar endoscopic coagulator-cutter and accessories. (a) Identification. A bipolar endoscopic...

2014-04-01

309

21 CFR 884.4150 - Bipolar endoscopic coagulator-cutter and accessories.  

Code of Federal Regulations, 2012 CFR

...2012-04-01 2012-04-01 false Bipolar endoscopic coagulator-cutter and accessories...Gynecological Surgical Devices § 884.4150 Bipolar endoscopic coagulator-cutter and accessories. (a) Identification. A bipolar endoscopic...

2012-04-01

310

77 FR 22802 - Certain Handbags, Luggage, Accessories, and Packaging Thereof; Determination Not To Review an...  

Federal Register 2010, 2011, 2012, 2013, 2014

...COMMISSION [Investigation No. 337-TA-754] Certain Handbags, Luggage, Accessories, and Packaging Thereof; Determination Not To...within the United States after importation of certain handbags, luggage, accessories, and packaging thereof by reason of...

2012-04-17

311

76 FR 24522 - In the Matter of Certain Handbags, Luggage, Accessories, and Packaging Thereof; Notice of...  

Federal Register 2010, 2011, 2012, 2013, 2014

...Investigation No. 337-TA-754] In the Matter of Certain Handbags, Luggage, Accessories, and Packaging Thereof; Notice of Commission...within the United States after importation of certain handbags, luggage, accessories, and packaging thereof by reason of...

2011-05-02

312

41 CFR 101-39.304 - Modification or installation of accessory equipment.  

Code of Federal Regulations, 2011 CFR

...GSA Interagency Fleet Management System Vehicles § 101-39...installation of accessory equipment. The modification of a GSA Interagency Fleet Management System (IFMS) vehicle...installation of accessory equipment on these...

2011-07-01

313

41 CFR 101-39.304 - Modification or installation of accessory equipment.  

Code of Federal Regulations, 2014 CFR

...GSA Interagency Fleet Management System Vehicles § 101-39...installation of accessory equipment. The modification of a GSA Interagency Fleet Management System (IFMS) vehicle...installation of accessory equipment on these...

2014-07-01

314

41 CFR 101-39.304 - Modification or installation of accessory equipment.  

Code of Federal Regulations, 2010 CFR

...GSA Interagency Fleet Management System Vehicles § 101-39...installation of accessory equipment. The modification of a GSA Interagency Fleet Management System (IFMS) vehicle...installation of accessory equipment on these...

2010-07-01

315

41 CFR 101-39.304 - Modification or installation of accessory equipment.  

Code of Federal Regulations, 2013 CFR

...GSA Interagency Fleet Management System Vehicles § 101-39...installation of accessory equipment. The modification of a GSA Interagency Fleet Management System (IFMS) vehicle...installation of accessory equipment on these...

2013-07-01

316

41 CFR 101-39.304 - Modification or installation of accessory equipment.  

Code of Federal Regulations, 2012 CFR

...GSA Interagency Fleet Management System Vehicles § 101-39...installation of accessory equipment. The modification of a GSA Interagency Fleet Management System (IFMS) vehicle...installation of accessory equipment on these...

2012-07-01

317

21 CFR 884.1300 - Uterotubal carbon dioxide insufflator and accessories.  

Code of Federal Regulations, 2013 CFR

...2013-04-01 false Uterotubal carbon dioxide insufflator and accessories...Devices § 884.1300 Uterotubal carbon dioxide insufflator and accessories...Identification. A uterotubal carbon dioxide insufflator and...

2013-04-01

318

21 CFR 884.1300 - Uterotubal carbon dioxide insufflator and accessories.  

Code of Federal Regulations, 2010 CFR

...2010-04-01 false Uterotubal carbon dioxide insufflator and accessories...Devices § 884.1300 Uterotubal carbon dioxide insufflator and accessories...Identification. A uterotubal carbon dioxide insufflator and...

2010-04-01

319

21 CFR 884.1300 - Uterotubal carbon dioxide insufflator and accessories.  

Code of Federal Regulations, 2011 CFR

...2011-04-01 false Uterotubal carbon dioxide insufflator and accessories...Devices § 884.1300 Uterotubal carbon dioxide insufflator and accessories...Identification. A uterotubal carbon dioxide insufflator and...

2011-04-01

320

21 CFR 884.1300 - Uterotubal carbon dioxide insufflator and accessories.  

Code of Federal Regulations, 2012 CFR

...2012-04-01 false Uterotubal carbon dioxide insufflator and accessories...Devices § 884.1300 Uterotubal carbon dioxide insufflator and accessories...Identification. A uterotubal carbon dioxide insufflator and...

2012-04-01

321

21 CFR 884.1300 - Uterotubal carbon dioxide insufflator and accessories.  

Code of Federal Regulations, 2014 CFR

...2014-04-01 false Uterotubal carbon dioxide insufflator and accessories...Devices § 884.1300 Uterotubal carbon dioxide insufflator and accessories...Identification. A uterotubal carbon dioxide insufflator and...

2014-04-01

322

75 FR 10327 - Advance Accessory Systems, Shelbyville, MI; Notice of Termination of Certification  

Federal Register 2010, 2011, 2012, 2013, 2014

...and Training Administration [TA-W-71,233] Advance Accessory Systems, Shelbyville, MI; Notice of Termination of Certification...to a worker petition filed on behalf of workers at Advance Accessory Systems, Shelbyville, Michigan. The petitioning group...

2010-03-05

323

Accessory lobes of the liver: A report of 3 cases and review of the literature  

PubMed Central

Summary This article is about 3 cases of accessory lobes of the liver. Case One involved a pedunculated accessory lobe of the liver (ALL), Case Two involved a true ectopic liver, and Case Three involved a sessile accessory lobe of the liver. All 3 cases were diagnosed by computed tomography (CT) or magnetic resonance imaging (MRI) and confirmed by surgical and histological examination. The pertinent literature on accessory lobes of the liver is also reviewed. PMID:25343077

Wang, Chenglin; Cheng, Lin; Zhang, Ziqin; Xie, Tingting; Ding, Heyu; Deng, Qianhua; Yuan, Zhidong

2012-01-01

324

Accessory Veins in Nonmaturing Autogenous Arteriovenous Fistulae: Analysis of Anatomic Features and Impact on Fistula Maturation.  

PubMed

The appropriate management of nonmaturing arteriovenous (AV) fistulae continues to be a controversial issue. While coil embolization of accessory side-branch veins can be performed to encourage maturation of nonmaturing AV fistulae, the true efficacy and optimal patient population are not well understood. Fistulagrams performed on nonmaturing AV fistulae were retrospectively reviewed in 145 patients (86 males, median age 63 years) for the presence of accessory veins. Fistula and accessory vein measurements were obtained, as were rates of eventual fistula maturation after accessory vein coil embolization. Of 145 nonmaturing fistulae, 49 (34%) had a stenosis without any accessory veins, 76 (52%) had a stenosis and one or more accessory veins, and 20 (14%) had an accessory vein without concurrent stenosis. Eighteen AV fistulae had one or more accessory veins without coexisting stenosis. Nine fistulae had a caliber decrease immediately downstream from the accessory vein. Coil embolization of dominant accessory veins with a caliber decrease immediately downstream (n = 6) resulted in a 100% eventual fistula maturation rate versus 67% for fistulae without this configuration (n = 6, p = 0.15). Accessory vein size was not correlated with maturation rates (p = 0.51). The majority of nonmaturing fistulae with accessory veins had a coexisting stenosis. Higher maturation rates may result with selected anatomic parameters, although additional studies with more robust sample sizes are needed prior to definitive conclusions. PMID:25482275

Engstrom, Bjorn I; Grimm, Lars J; Ronald, James; Smith, Tony P; Kim, Charles Y

2014-12-01

325

26 CFR 48.4062(b)-1 - Rebuilt parts or accessories sold on an exchange basis.  

Code of Federal Regulations, 2010 CFR

...2010-04-01 true Rebuilt parts or accessories sold on an exchange basis. 48...4062(b)-1 Rebuilt parts or accessories sold on an exchange basis. The sale price of a rebuilt part or accessory on which the tax is to be...

2010-04-01

326

75 FR 67634 - Parts and Accessories Necessary for Safe Operation: Antilock Brake Systems  

Federal Register 2010, 2011, 2012, 2013, 2014

...FMCSA-2010-0186] RIN-2126-AB27 Parts and Accessories Necessary for Safe Operation: Antilock...direct final rule titled ``Parts and Accessories Necessary for Safe Operation: Antilock...direct final rule entitled ``Parts and Accessories Necessary for Safe Operation:...

2010-11-03

327

26 CFR 48.4062(a)-1 - Specific parts or accessories.  

Code of Federal Regulations, 2010 CFR

...2010-04-01 true Specific parts or accessories. 48.4062(a)-1 Section 48...4062(a)-1 Specific parts or accessories. Spark plugs, storage batteries...a), are considered parts of, or accessories for, such articles whether or not...

2010-04-01

328

Accessory proteins of SARS-CoV and other coronaviruses.  

PubMed

The huge RNA genome of SARS coronavirus comprises a number of open reading frames that code for a total of eight accessory proteins. Although none of these are essential for virus replication, some appear to have a role in virus pathogenesis. Notably, some SARS-CoV accessory proteins have been shown to modulate the interferon signaling pathways and the production of pro-inflammatory cytokines. The structural information on these proteins is also limited, with only two (p7a and p9b) having their structures determined by X-ray crystallography. This review makes an attempt to summarize the published knowledge on SARS-CoV accessory proteins, with an emphasis on their involvement in virus-host interaction. The accessory proteins of other coronaviruses are also briefly discussed. This paper forms part of a series of invited articles in Antiviral Research on "From SARS to MERS: 10 years of research on highly pathogenic human coronaviruses" (see Introduction by Hilgenfeld and Peiris (2013)). PMID:24995382

Liu, Ding Xiang; Fung, To Sing; Chong, Kelvin Kian-Long; Shukla, Aditi; Hilgenfeld, Rolf

2014-09-01

329

The sea lamprey has a primordial accessory olfactory system  

PubMed Central

Background A dual olfactory system, represented by two anatomically distinct but spatially proximate chemosensory epithelia that project to separate areas of the forebrain, is known in several classes of tetrapods. Lungfish are the earliest evolving vertebrates known to have this dual system, comprising a main olfactory and a vomeronasal system (VNO). Lampreys, a group of jawless vertebrates, have a single nasal capsule containing two anatomically distinct epithelia, the main (MOE) and the accessory olfactory epithelia (AOE). We speculated that lamprey AOE projects to specific telencephalic regions as a precursor to the tetrapod vomeronasal system. Results To test this hypothesis, we characterized the neural circuits and molecular profiles of the accessory olfactory epithelium in the sea lamprey (Petromyzon marinus). Neural tract-tracing revealed direct and reciprocal connections with the dorsomedial telencephalic neuropil (DTN) which in turn projects directly to the dorsal pallium and the rostral hypothalamus. High-throughput sequencing demonstrated that the main and the accessory olfactory epithelia have virtually identical profiles of expressed genes. Real time quantitative PCR confirmed expression of representatives of all 3 chemoreceptor gene families identified in the sea lamprey genome. Conclusion Anatomical and molecular evidence shows that the sea lamprey has a primordial accessory olfactory system that may serve a chemosensory function. PMID:23957559

2013-01-01

330

Encoding Pheromonal Signals in the Accessory Olfactory Bulb of  

E-print Network

Encoding Pheromonal Signals in the Accessory Olfactory Bulb of Behaving Mice Minmin Luo,1 * Michale S. Fee,2 Lawrence C. Katz1 Many mammalian species rely on pheromones--semiochemicals produced how the central nervous system integrates the complex repertoire of pheromones, we recorded from

Fee, Michale S.

331

Accessory cells in the immune defense of the dental pulp.  

PubMed

This communication focuses on the participation of accessory cells in the initial recognition and processing of antigenic substances in the dental pulp. Immunohistochemical analyses have demonstrated the presence of two types of accessory cells--one with a dendritic morphology located in the periphery of the pulp and one with a macrophage-like appearance located more centrally. Functional studies in vitro have provided evidence for the dendritic cells being the most significant of the two cells regarding their capacity to induce T-cell proliferation. Studies on ontogeny have revealed that the appearance of pulp accessory cells is delayed compared to other peripheral tissues. In experimentally induced pulp lesions a rapid increase of cells with morphologic and phenotypic features similar to normally occurring accessory cells was found. These data demonstrate that the dental pulp contains the necessary cellular constituents to mount an immunologic defense reaction. Future studies should focus on elucidating possible interactions between these immune cells and the neurovascular system of the pulp. PMID:1508890

Jontell, M; Bergenholtz, G

1992-01-01

332

RESEARCH Open Access Are accessory hearing structures linked to inner  

E-print Network

RESEARCH Open Access Are accessory hearing structures linked to inner ear morphology? Insights from, the connection between anterior swim bladder extensions and the inner ears enhances sound transmission coincide with differences in inner ear morphology and thus compared Steatocranus tinanti (vestigial swim

Ladich, Friedrich

333

Evolutionary dynamics of the accessory genome of Listeria monocytogenes.  

PubMed

Listeria monocytogenes, a foodborne bacterial pathogen, is comprised of four phylogenetic lineages that vary with regard to their serotypes and distribution among sources. In order to characterize lineage-specific genomic diversity within L. monocytogenes, we sequenced the genomes of eight strains from several lineages and serotypes, and characterized the accessory genome, which was hypothesized to contribute to phenotypic differences across lineages. The eight L. monocytogenes genomes sequenced range in size from 2.85-3.14 Mb, encode 2,822-3,187 genes, and include the first publicly available sequenced representatives of serotypes 1/2c, 3a and 4c. Mapping of the distribution of accessory genes revealed two distinct regions of the L. monocytogenes chromosome: an accessory-rich region in the first 65° adjacent to the origin of replication and a more stable region in the remaining 295°. This pattern of genome organization is distinct from that of related bacteria Staphylococcus aureus and Bacillus cereus. The accessory genome of all lineages is enriched for cell surface-related genes and phosphotransferase systems, and transcriptional regulators, highlighting the selective pressures faced by contemporary strains from their hosts, other microbes, and their environment. Phylogenetic analysis of O-antigen genes and gene clusters predicts that serotype 4 was ancestral in L. monocytogenes and serotype 1/2 associated gene clusters were putatively introduced through horizontal gene transfer in the ancestral population of L. monocytogenes lineage I and II. PMID:23825666

den Bakker, Henk C; Desjardins, Christopher A; Griggs, Allison D; Peters, Joseph E; Zeng, Qiandong; Young, Sarah K; Kodira, Chinnappa D; Yandava, Chandri; Hepburn, Theresa A; Haas, Brian J; Birren, Bruce W; Wiedmann, Martin

2013-01-01

334

Cancer of the accessory breast--a case report.  

PubMed

Breast neoplasm may develop in ectopically located glandular tissue. This paper presents an interesting and rare case of a 50-year-old female who despite regular mammography screening examination developed an invasive accessory breast cancer. Clinical examination revealed a 2 cm - tumour localized 4 cm below the left inframammary fold. The lesion was immobile, the skin and the atrophic nipple were retracted, the tumour infiltrated the thoracic wall. Oligobiopsy and additional examinations showed an invasive stage IIIB ductal breast cancer (Bloom II, G-2). The receptor status was: ER(+), PGR(+), HER2(-). The increased level of cancer antigen 15.3 was found. The patient was submitted to pre-operative chemotherapy. She also underwent surgery and subsequently post-operative chemotherapy and radiotherapy. On the basis of the presented case, it could be concluded that the accessory mammary glands are out of the image of screening breast examinations. Accessory breast cancer is usually diagnosed by clinical examination and ultrasonography. Preventive resection of accessory breast in women at high risk of developing breast cancer can be considered as the treatment of choice in most patients. PMID:19808163

Madej, B; Balak, B; Winkler, I; Burdan, F

2009-01-01

335

Two speed accessory transmission with optional neutral mode  

Microsoft Academic Search

An underdrive accessory transmission associated with an engine is described comprising: a planetary gear set comprising a sun gear having an integrally formed shaft planet gears positioned about and drivingly engaging the sun gear, a planet gear carrier, and a ring gear positioned about and drivingly engaging the planet gears, wherein the ring gear provides rotational input to the transmission

Sivalingam

1987-01-01

336

Clay Minerals  

SciTech Connect

Clay minerals are important components of the environment and are involved or implicated in processes such as the uptake of pollutants and the release of nutrients and as potential platforms for a number of chemical reactions. Owing to their small particle sizes (typically, on the order of microns or smaller) and mixing with a variety of other minerals and soil components, advanced characterization methods are needed to study their structures, dynamics, and reactivities. In this article, we describe the use of solid-state NMR methods to characterize the structures and chemistries of clay minerals. Early one-pulse magic-angle spinning (MAS) NMR studies of 27Al and 29Si have now been enhanced and extended with new studies utilizing advanced methodologies (such as Multiple Quantum MAS) as well as studies of less-sensitive nuclei. In additional work, the issue of reactivity of clay minerals has been addressed, including studies of reactive surface area in the environment. Utilizations of NMR-sensitive nuclides within the clay minerals themselves, and in molecules that react with speci?c sites on the clay mineral surfaces, have aided in understanding the reactivity of these complex aluminosilicate systems.

Mueller, Karl T.; Sanders, Rebecca L.; Washton, Nancy M.

2014-03-14

337

The ubiquitous nature of accessory calcite in granitoid rocks: Implications for weathering, solute evolution, and petrogenesis  

USGS Publications Warehouse

Calcite is frequently cited as a source of excess Ca, Sr and alkalinity in solutes discharging from silicate terrains yet, no previous effort has been made to assess systematically the overall abundance, composition and petrogenesis of accessory calcite in granitoid rocks. This study addresses this issue by analyzing a worldwide distribution of more than 100 granitoid rocks. Calcite is found to be universally present in a concentration range between 0.028 to 18.8 g kg-1 (mean = 2.52 g kg-1). Calcite occurrences include small to large isolated anhedral grains, fracture and cavity infillings, and sericitized cores of plagioclase. No correlation exists between the amount of calcite present and major rock oxide compositions, including CaO. Ion microprobe analyses of in situ calcite grains indicate relatively low Sr (120 to 660 ppm), negligible Rb and 87Sr/86Sr ratios equal to or higher than those of coexisting plagioclase. Solutes, including Ca and alkalinity produced by batch leaching of the granitoid rocks (5% CO2 in DI water for 75 d at 25??C), are dominated by the dissolution of calcite relative to silicate minerals. The correlation of these parameters with higher calcite concentrations decreases as leachates approach thermodynamic saturation. In longer term column experiments (1.5 yr), reactive calcite becomes exhausted, solute Ca and Sr become controlled by feldspar dissolution and 87Sr/ 86Sr by biotite oxidation. Some accessory calcite in granitoid rocks is related to intrusion into carbonate wall rock or produced by later hydrothermal alteration. However, the ubiquitous occurrence of calcite also suggests formation during late stage (subsolidus) magmatic processes. This conclusion is supported by petrographic observations and 87Sr/86Sr analyses. A review of thermodynamic data indicates that at moderate pressures and reasonable CO2 fugacities, calcite is a stable phase at temperatures of 400 to 700??C. Copyright ?? 2005 Elsevier Ltd.

White, A.F.; Schulz, M.S.; Lowenstern, J. B.; Vivit, D.V.; Bullen, T.D.

2005-01-01

338

Spinal accessory nerve schwannomas masquerading as a fourth ventricular lesion.  

PubMed

Schwannomas are benign lesions that arise from the nerve sheath of cranial nerves. The most common schwannomas arise from the 8(th) cranial nerve (the vestibulo-cochlear nerve) followed by trigeminal and facial nerves and then from glossopharyngeal, vagus, and spinal accessory nerves. Schwannomas involving the oculomotor, trochlear, abducens and hypoglossal nerves are very rare. We report a very unusual spinal accessory nerve schwannoma which occupied the fourth ventricle and extended inferiorly to the upper cervical canal. The radiological features have been detailed. The diagnostic dilemma was due to its midline posterior location mimicking a fourth ventricular lesion like medulloblastoma and ependymoma. Total excision is the ideal treatment for these tumors. A brief review of literature with tabulations of the variants has been listed. PMID:25552867

Krishnan, Shyam Sundar; Bojja, Sivaram; Vasudevan, Madabhushi Chakravarthy

2015-01-01

339

Case of combined paratracheal air cyst and accessory cardiac bronchus.  

PubMed

Paratracheal air cyst (PTAC) is rather frequently detected on thoracic multi-detector computed tomography (MDCT) in daily practice. Accessory cardiac bronchus (ACB) is a rare anomaly; however, the incidence rate is increasing with the use of recent high quality MDCT scanners. We report a case of combined PTAC and ACB that was incidentally detected by MDCT. Three dimensional CT images revealed anatomical details. PMID:25027253

Ichikawa, Tamaki; Ono, Shun; Mori, Naoko; Sekiguchi, Tatsuya; Koizumi, Jun; Imai, Yutaka

2014-07-01

340

Accessory ossicles and sesamoid bones: recognition and treatment.  

PubMed

Accessory ossicles and sesamoid bones are normal variants of bone development. In foot and ankle X-rays these bones can appear similar to, or can obscure, fractures, which makes the X-rays difficult to interpret. This article illustrates and describes some of the more common ossicles and sesamoid bones, and provides a brief description of the management of the patients with foot or ankle pain whose X-rays are inconclusive. PMID:25746889

Summers, Anthony

2015-03-01

341

Industrial Minerals  

ERIC Educational Resources Information Center

The past year is seen as not particularly good for industrial minerals and for industry in general. Environmental concerns continued to trouble the industry with unacceptable asbestos concentrations and chlorofluorocarbon effects on ozone. A halting U.S. economy also affected industrial progress. (MA)

Bradbury, James C.

1978-01-01

342

Hypoxia exaggerates inspiratory accessory muscle deoxygenation during hyperpnoea.  

PubMed

The purpose of this study was to elucidate inspiratory accessory muscle deoxygenation and myoelectric activity during isolated volitional hyperpnoea under hypoxic conditions. Subjects performed voluntary isocapnic hyperpnoea (tidal volume=30-40% of forced vital capacity, breathing frequency=60breaths/min) in normoxia [inspired gas fraction ( [Formula: see text] )=0.21] and hypoxia ( [Formula: see text] ). Muscle deoxyhemoglobin/myoglobin (Deoxy-Hb/Mb) and muscle oxygen saturation ( [Formula: see text] ) using near-infrared spectroscopy and surface electromyography were measured from sternocleidomastoid (SCM) and intercostal (IC) muscles. During hyperpnoea, increases in Deoxy-Hb/Mb and reductions of [Formula: see text] in the SCM and IC muscles were larger (P<0.05) in hypoxia than those in normoxia. Under hypoxic conditions, the electromyogram increases from the SCM and IC muscles during hyperpnoea were greater than that under the normoxic conditions. These results suggest that inspiratory accessory muscle deoxygenation during isolated hyperpnoea is exaggerated in hypoxia compared with normoxia and that hypoxia has a significant impact on inspiratory accessory muscle activation. PMID:25747385

Katayama, Keisho; Suzuki, Yasuhiro; Hoshikawa, Masako; Ohya, Toshiyuki; Oriishi, Marie; Itoh, Yuka; Ishida, Koji

2015-06-01

343

The first find of kimberlitic accessory minerals in mafic-ultramafic dikes in Spitsbergen  

Microsoft Academic Search

Since the discovery of diamond in kimberlites, the interest of geologists in these specific rocks has not faded away. The term “kimberlite” was proposed at the end of XIX century by H. Luis for diamondiferous rocks (volcanic peridotite with the porphyritic basaltic texture) from the Kimberley district in South Africa. The majority of researchers believe that kimberlite is a hypabyssal

A. N. Evdokimov; M. Yu. Burnaeva; E. S. Radina; A. N. Sirotkin

2006-01-01

344

U, Th, Pb and REE abundances and Pb 207/Pb 206 ages of individual minerals in returned lunar material by ion microprobe mass analysis.  

NASA Technical Reports Server (NTRS)

Results of ion microprobe analyses of Apollo 11, 12 and 14 material, showing that U, Th, Pb and REE are concentrated in accessory minerals such as apatite, whitlockite, zircon, baddeleyite, zirkelite, and tranquillityite. Th/U ratios are found to vary by over a factor of 40 in these minerals. K, Ba, Rb and Sr have been localized in a K rich, U and Th poor glass phase that is commonly associated with the U and Th bearing accessory minerals. Li is observed to be fairly evenly distributed between the various accessory phases. The phosphates have been found to have REE abundance patterns (normalized to the chondrite abundances) that are fairly flat, while the Zr bearing minerals have patterns that rise steeply, by factors of ten or more, from La to Gd. All the accessory minerals have large negative Eu anomalies. Radiometric age dates (Pb 207/Pb 206) of the individual U and Th bearing minerals compare favorably with the Pb 207/Pb 206 age of the bulk rocks.

Andersen, C. A.; Hinthorne, J. R.

1972-01-01

345

Pb-207/Pb-206 ages of individual mineral phases in Luna 20 material by ion microprobe mass analysis.  

NASA Technical Reports Server (NTRS)

Ion microprobe analyses of returned lunar material have helped to demonstrate that U, Th, and radiogenic Pb are concentrated in small accessory mineral phases. It is possible to measure the isotopic composition of this Pb and obtain a radiometric Pb-207/Pb-206 age for the mineral. The ages so derived compare favorably with crystallization ages determined by conventional methods. A grain mount (22003,2/6) of Luna 20 material was searched for such accessory mineral phases, and two were found. One of these phases give an age of 4.12 plus or minus 0.04 b.y. and the other an age of 4.42 plus or minus 0.11 b.y. Ages of minerals dated by the ion probe in Apollo samples 14310 and 15555 are given for comparison. Data on the upper limit for Pb concentration in the outermost surface layers of free lunar soil particles are also given.

Andersen, C. A.; Hinthorne, J. R.

1973-01-01

346

Vitamins and Minerals  

MedlinePLUS

... Select a Language: Fact Sheet 801 Vitamins and Minerals WHY ARE VITAMINS AND MINERALS IMPORTANT? WHAT ARE ANTIOXIDANTS? HOW MUCH DO I ... HARMFUL? FOR MORE INFORMATION WHY ARE VITAMINS AND MINERALS IMPORTANT? Vitamins and minerals are sometimes called micronutrients. ...

347

Vitamins and Minerals  

MedlinePLUS

... of a good thing? What Are Vitamins and Minerals? Vitamins and minerals make people's bodies work properly. ... of them each day. What Do Vitamins and Minerals Do? Vitamins and minerals boost the immune system, ...

348

Mineral bioprocessing  

SciTech Connect

In the last 25 years, the introduction of biotechnological methods in hydrometallurgy has created new opportunities and challenges for the mineral processing industry. This was especially true for the production of metal values from mining wastes and low-and-complex-grade mineral resources, which were considered economically not amenable for processing by conventional extraction methods. Using bio-assisted heap, dump and in-situ leaching technologies, copper and uranium extractions gained their first industrial applications. The precious metal industries were the next to adopt the bio-preoxidation technique in the extraction of gold from refractory sulfide-bearing ores and concentrates. A variety of other bioleaching opportunities exist for nickel, cobalt, cadmium and zinc sulfide leaching. Recently developed bioremediation methods and biosorption technologies have shown a good potential for industrial applications to remove trace heavy metal and radionuclide concentrations from contaminated soils, and mining and processing effluents.

Torma, A.E.

1993-05-01

349

Mineral Commodities  

NSDL National Science Digital Library

This exercise introduces mineral commodities (elements). Students consider the elements aluminum, iron, copper, nickel, zinc, uranium, lead, gold, mercury and tin and match them with their definintions in a table. Then they use minable grade (minable weight percent) and normal crustal abundance (crustal weight percent) to calculate the concentration factor for several commodities to determine their economic minability. Students then graph their calculations and explain their trend.

Dexter Perkins

350

Rocks and Minerals  

NSDL National Science Digital Library

Rock Cycle Mineralogy 4 Kids Mineralogy 4 kids : rockin Internet site : the best place to learn about rocks and minerals Rock Cycle Map Rocks and Minerals Rocks and Minerals Pictures Rocks and Minerals Slide Show Rocks and Minerals Slide Show Earth Science Earth Science Uses for Minerals Metamorphic Rock Forming Sedimentary Rocks Observation ...

richrigby

2010-02-23

351

21 CFR 876.4730 - Manual gastroenterology-urology surgical instrument and accessories.  

Code of Federal Regulations, 2010 CFR

... false Manual gastroenterology-urology surgical instrument and accessories...MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Surgical Devices § 876.4730 Manual gastroenterology-urology surgical instrument and...

2010-04-01

352

21 CFR 876.4730 - Manual gastroenterology-urology surgical instrument and accessories.  

Code of Federal Regulations, 2011 CFR

... false Manual gastroenterology-urology surgical instrument and accessories...MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Surgical Devices § 876.4730 Manual gastroenterology-urology surgical instrument and...

2011-04-01

353

21 CFR 876.4730 - Manual gastroenterology-urology surgical instrument and accessories.  

Code of Federal Regulations, 2013 CFR

... false Manual gastroenterology-urology surgical instrument and accessories...MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Surgical Devices § 876.4730 Manual gastroenterology-urology surgical instrument and...

2013-04-01

354

21 CFR 876.4730 - Manual gastroenterology-urology surgical instrument and accessories.  

Code of Federal Regulations, 2014 CFR

... false Manual gastroenterology-urology surgical instrument and accessories...MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Surgical Devices § 876.4730 Manual gastroenterology-urology surgical instrument and...

2014-04-01

355

21 CFR 876.4730 - Manual gastroenterology-urology surgical instrument and accessories.  

Code of Federal Regulations, 2012 CFR

... false Manual gastroenterology-urology surgical instrument and accessories...MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Surgical Devices § 876.4730 Manual gastroenterology-urology surgical instrument and...

2012-04-01

356

Thermomechanical milling of accessory lithics in volcanic conduits  

NASA Astrophysics Data System (ADS)

Accessory lithic clasts recovered from pyroclastic deposits commonly result from the failure of conduit wall rocks, and represent an underutilized resource for constraining conduit processes during explosive volcanic eruptions. The morphological features of lithic clasts provide distinctive 'textural fingerprints' of processes that have reshaped them during transport in the conduit. Here, we present the first study focused on accessory lithic clast morphology and show how the shapes and surfaces of these accessory pyroclasts can inform on conduit processes. We use two main types of accessory lithic clasts from pyroclastic fallout deposits of the 2360 B.P. subplinian eruption of Mount Meager, British Columbia, as a case study: (i) rough and subangular dacite clasts, and (ii) variably rounded and smoothed monzogranite clasts. The quantitative morphological data collected on these lithics include: mass, volume, density, 2-D image analysis of convexity (C), and 3-D laser scans for sphericity (?) and smoothness (S). Shaping and comminution (i.e. milling) of clasts within the conduit are ascribed to three processes: (1) disruptive fragmentation due to high-energy impacts between clasts or between clasts and conduit walls, (2) ash-blasting of clasts suspended within the volcanic flux, and (3) thermal effects. We use a simplified conduit eruption model to predict ash-blasting velocities and lithic residence times as a function of clast size and source depth, thereby constraining the lithic milling processes. The extent of shape and surface modification (i.e. rounding and honing) is directly proportional to clast residence times within the conduit prior to evacuation. We postulate that the shallow-seated dacite clasts remain subangular and rough due to short (<2 min) residence times, whereas monzogranite clasts are much more rounded and smoothed due to deeper source depths and consequently longer residence times (up to ˜1 h). Larger monzogranite clasts are smoother than smaller clasts due to longer residence times and to greater differential velocities within the ash-laden jet. Lastly, our model residence times and mass loss estimates for rounded clasts are used to estimate minimum attrition rates due to volcanic ash-blasting within the conduit (e.g., 12 cm3?s-1 for 25 cm clasts, sourced at 2500 m depth).

Campbell, Michelle E.; Russell, James K.; Porritt, Lucy A.

2013-09-01

357

Antagonism of Innate Immunity by Paramyxovirus Accessory Proteins  

PubMed Central

Paramyxovirinae, a subfamily of Paramyxoviridae, are negative strand RNA viruses comprised of many important human and animal pathogens, which share a high degree of genetic and structural homology. The accessory proteins expressed from the P/V/C gene are major factors in the pathogenicity of the viruses, because of their ability to abrogate various facets of type I interferon (IFN) induction and signaling. Most of the paramyxoviruses exhibit a commonality in their ability to antagonize innate immunity by blocking IFN induction and the Jak/STAT pathway. However, the manner in which the accessory proteins inhibit the pathway differs among viruses. Similarly, there are variations in the capability of the viruses to counteract intracellular detectors (RNA helicases, mda-5 and RIG-I). Furthermore, a functional specificity in the antagonism of the IFN response has been reported, suggesting that specificity in the circumvention of innate immunity restricts viral host range. Available evidence indicates that paramyxoviruses employ specific strategies to antagonize the IFN response of their specific hosts, which is one of the major factors that determine viral pathogenicity and host range. PMID:21994561

Chambers, Raychel; Takimoto, Toru

2009-01-01

358

Transesophageal echocardiographic diagnosis of thrombus in accessory lobes of the left atrial appendage.  

PubMed

Fifty-four percent of left atrial appendages have two lobes. The number ranges from one to four lobes. We describe three patients with accessory lobes of the left atrial appendage studied with multiplanar transesophageal echocardiography (TEE). In one patient there was evidence of thrombi in the accessory lobe. PMID:11107207

Vargas-Barrón, J; Espinola-Zavaleta, N; Roldán, F J; Romero-Cárdenas, A; Keirns, C; Vázquez-Antona, C

2000-10-01

359

Changes in the accessory group of hypothalamic neurosecretory cells after stimulation of the supraoptic nucleus  

Microsoft Academic Search

Changes in the accessory group of neurosecretory cells in cats were studied in acute experiments under chloralose anesthesia. Unilateral stimulation of the supraoptic nucleus, leading to vasoconstriction, caused activation of cells of the accessory group on the side of stimulation and an increase in size of the nucleolus. Cells of the paraventricular nucleus were unchanged whereas cells of the supraoptic

E. A. Borisova

1977-01-01

360

Functional morphology of the accessory neurosecretory cells of the cat hypothalamus  

Microsoft Academic Search

Accessory groups of neurosecretory cells were studied by staining serial paraffin sections of the hypothalamus by Gomori's method after stimulation of the supraoptic (SON) and postoptic (PON) nuclei, the preoptic region of the hypothalamus, the cervical sympathetic nerve (CSN) and afferent fibers of the vagus nerve in acute experiments on cats. Four paired accessory groups in the rostral hypothalamus were

E. A. Borisova

1978-01-01

361

Electrical recordings from the accessory olfactory bulb in VNO-AOB ex vivo preparations.  

PubMed

Electrical recordings from individual accessory olfactory bulb neurons allow exploration of the functional properties of this important pheromonal processing circuit. Several approaches to performing such recordings have been used. Here, we describe ex vivo methods that we have found useful for recording from accessory olfactory bulb neurons using simple extracellular glass electrodes. PMID:24014366

Meeks, Julian P; Holy, Timothy E

2013-01-01

362

WagTag: A Dog Collar Accessory for Monitoring Canine Activity Levels  

E-print Network

accessories with such apps are now emerging for the pet market. In this paper we describe WagTag, an accessory with the development of this device, especially with respect to aesthetics, durability, and functionality, and also@cis.fordham.edu Ashwin Nathan Healthy Pet Technologies Cincinnati, OH, 45202 winash@gmail.com JB Kropp Healthy Pet

Weiss, Gary

363

Expression of accessory molecules and cytokines in acute EAE in marmoset monkeys ( Callithrix jacchus)  

Microsoft Academic Search

Accessory molecules and cytokines are involved in the immunopathogenesis of multiple sclerosis (MS) and experimental autoimmune encephalomyelitis (EAE) in rodent models, and are potential targets for immunotherapy. Evaluation of such experimental therapies requires appropriate animal models. Therefore, we analysed the expression of selected accessory molecules and cytokines in the brain of marmoset monkeys (Callithrix jacchus) with acute EAE, a newly

Jon D Laman; Marjan van Meurs; Marc M Schellekens; Mark de Boer; Bert Melchers; Luca Massacesi; Hans Lassmann; Eric Claassen; Bert A't Hart

1998-01-01

364

Ten-year Experience of Radiofrequency Catheter Ablation of Accessory Pathways in Children and Young Adults  

Microsoft Academic Search

Transcatheter radiofrequency ablation of supraventricular tachycardia was first introduced in 1987. The procedure is now well-accepted as primary treatment for supraventricular tachycardia in paediatric patients. In this report we describe our experience of radiofrequency ablation of accessory pathway mediated supraventricular tachycardia in the past 10 years. From 1994 to 2005, 121 procedures of radiofrequency ablation of accessory pathway were performed

KT WONG; TC YUNG; KS LUN; KYY FAN; AKT CHAU

365

Successful Accessory Renal Artery Denervation in a Patient with Resistant Hypertension  

PubMed Central

Renal sympathetic denervation is safe and effective in patients with resistant hypertension. In all of the studies of renal artery denervation, patients with accessory renal arteries are excluded. So there is not any data regarding renal sympathetic denervation applied to the accessory renal arteries. We present a young female patient with resistant hypertension despite use of five different antihypertensive drugs. The patient had a well developed (diameter >4 mm) left renal accessory. We believe that if we omitted the well developed accessory renal artery, we would not have maintained adequate blood pressure control. Thus, we applied radiofrequency ablation to both renal arteries and left accessory artery. Immediately after the procedure, the patient's blood pressure was reduced to 110/60 mmHg and this effect was continued during the first month of follow-up. PMID:24949184

Atas, Halil; Durmus, Erdal; Sunbul, Murat; Mutlu, Bulent

2014-01-01

366

26 CFR 48.4061(a)-4 - Parts or accessories sold on or in connection with chasis, bodies, etc.  

Code of Federal Regulations, 2010 CFR

...2010-04-01 2010-04-01 true Parts or accessories sold on or in connection with chasis...Items § 48.4061(a)-4 Parts or accessories sold on or in connection with chasis...The tax attaches in respect of parts or accessories for articles specified in...

2010-04-01

367

Minerals and Fossils  

NSDL National Science Digital Library

This site is dedicated to rock and mineral collecting. It contains information for worldwide mineral and fossil collectors with articles, mineral photos, videos, a search engine and free classified ads.

mineraltown.com

368

Mineral Sands Down Under  

NSDL National Science Digital Library

This resource describes what mineral sands are, and discusses the heavy, dark-colored minerals that they contain (rutile, ilmenite, zircon, monazite). A map shows locations of mineral sands deposits in Australia.

369

New Minerals and Science.  

ERIC Educational Resources Information Center

Defines geodiversity, compares it to biodiversity, and discusses the mineral classification system. Charts the discovery of new minerals in Australia over time and focuses on uses of these minerals in technological advances. (DDR)

Birch, William D.

1997-01-01

370

Vitamins and Minerals  

MedlinePLUS

... and Minerals Vitamins are organic substances (made by plants or animals), minerals are inorganic elements that come ... earth; soil and water and are absorbed by plants. Animals and humans absorb minerals from the plants ...

371

Properties of Minerals  

NSDL National Science Digital Library

Students examine a number of key mineral properties and how they are displayed by different minerals. Mineral properties examined include crystal habit, cleavage, parting, fracture, hardness, tenacity, specific gravity, luster, color, and streak.

Dexter Perkins

372

Mineral spirits poisoning  

MedlinePLUS

Mineral spirits are liquid chemicals used to thin paint and as a degreaser. Mineral spirits poisoning occurs ... Mineral spirits ( Stoddard solvent ) Some paints Some floor and ... fluids White spirits Note: This list may not be all-inclusive.

373

Geomorphic mapping of floodplain accessory channels with implications for floodplain morphodynamics  

NASA Astrophysics Data System (ADS)

Floodplain morphology plays a key role in routing of floodwaters, sediment transport during floods, and the mechanics of the main channel. High-resolution topographic data (e.g., LiDAR) reveal a wealth of previously unappreciated geomorphic floodplain features. Using 1.5-m LiDAR data from Indiana, we found that the floodplains of Indiana rivers often contain a large number of secondary accessory channels. Accessory channels are subordinate to the main channel and are only active during flood stage, which is confirmed by Landsat images of inundated floodplains. Individual accessory channels are linear to sinuous, having widths ranging from 15 to 35% of the main channel, and lengths ranging from 500 to 3500 meters. On the White River, for example, the accessory channels account for ~25% of the floodplain area and these accessory channels are numerous and wide enough that during a ~10-year flood they conveyed all the flood discharge, leaving the inter-channel areas dry. To assess the pervasiveness of floodplain accessory channels, we inventoried all the floodplains of Indiana rivers having channel widths greater than 20 m. We constrained the mapping to the modern floodplains of each river, avoiding terraced floodplains related to the last glacial maximum. In total, we mapped 1100 km2 of floodplain; 55% of that area showed evidence for floodplain accessory channels. Moreover, there is a high concentration of floodplains exhibiting floodplain accessory channels in south-central Indiana occurring along the transition from glacial till into bedrock. Our preliminary hypothesis for the formation of floodplain accessory channels is that the channels form by connecting preexisting topographic lows, such as abandoned meander loops. Geomorphic mapping of a 7-km stretch of the floodplain along the White River reveals that the concave portions of accessory channels are associated with scroll-bar topography and abandoned meander loops from the main channel. In fact, 73% of the accessory channels annexed abandoned meander loops. Based on this, we conclude that accessory channels are associated with meandering rivers because frequent meander-loop cutoffs of the main channel create preexisting conduits that are then linked together during floods. These long coherent down-valley accessory channels have important implications for the morphodynamics of floodplains and flood-wave propagation.

David, S. R.; Edmonds, D. A.; Letsinger, S. L.; Hajek, E. A.

2013-12-01

374

Equilibrium composition of products of melting of main minerals involved in the composition of basalt  

Microsoft Academic Search

Using the method of thermodynamic simulation, the equilibrium composition of products of heating of plagioclases, pyroxenes,\\u000a peridots, and magnetite is determined in a temperature range of 1000–1400°C in inert, oxidizing, and reducing atmospheres.\\u000a The possibility of controlling the products of melting and crystallization of the above minerals is shown, and the behavior\\u000a of a series of accessory metals (Ti, Mn,

I. Z. Babievskaya; S. V. Fomichev; V. A. Krenev

2009-01-01

375

An investigation of accessory chromosomes in Panicum Coloratum L  

E-print Network

eros n CQQIC roe;". Q- Qer ? ' QCC(ssi rico Qs ((CI rc t1ra Or(gli(QI diP loM strain Tha addition of ona or Cua accaaaagy. cbronoscnaa uao u~A- ly ~ Ca ~ ~~~ pollen -fertility- yksmh ho~~- 'cnd vtrzzs Xt M relatively conclusive thoL accealsorias... of the closes, whole inflorescences were collected end the pollen mother ceDs were en- ~ cytoloSical, ly to determine ohromosoms number and the presence or absence of accessories. ~ the follawinS sprinS each of the closes was space-isolated a&L othec tg 1 o...

Burson, Byron Lynn

1965-01-01

376

[An epidermoid cyst derived from an intrapancreatic accessory spleen].  

PubMed

A 43-year-old female patient had high levels of CA19-9 marker; an abdominal ultrasound revealed a cyst. Further investigations with computed tomography (CT), magnetic resonance imaging, and endoscopic ultrasound CT identified a multilocular cystic lesion on the pancreatic tail. An abnormal wall was noted, and different signal strengths were measured in each cyst. Thus, a mucinous cystic tumor was diagnosed, and distal pancreatectomy combined with splenectomy was performed. During the surgery, we identified a multilocular pancreatic cyst with internal bleeding at its distal end. The lesion was ultimately diagnosed as an epidermoid cyst of an intrapancreatic accessory spleen. This diagnosis was based on the histological observation that the vascular construction of the cystic wall was equivalent to that of the spleen, and that its internal tissue was covered by squamous epithelium. PMID:24598102

Shinohara, Fumi; Furukawa, Yoshinari; Itsuki, Hiroshi; Sakano, Ayaka; Hananoki, Mutsumi; Kurushima, Hitoshi; Matsumoto, Nori; Yamamoto, Masahiro; Fujihara, Megumu

2014-03-01

377

Early vertebrate origin of melanocortin 2 receptor accessory proteins (MRAPs).  

PubMed

The melanocortin 2 receptor (MC2R) accessory proteins, MRAP, along with its homolog, MRAP2, are two among a growing number of G protein-coupled receptor accessory proteins that have been identified in recent years. These proteins interact directly with MC2R and are essential for trafficking of this receptor from the endoplasmic reticulum to the cell surface, where it mediates the effects of ACTH. lthough earlier studies have identified MRAP and MRAP2 subtypes in distant species, an overall evolutionary analysis of these families is still missing. Here, we performed a comprehensive evolutionary analysis of the MRAP and MRAP2 homologs based on whole genome sequences. We systematically mined and analyzed the genomes of metazoans to identify these genes. Overall, we identified 70 sequences of MRAP and MRAP2 from 44 species belonging to several vertebrate lineages, including at least 40 new sequences previously not reported in the literature. Herein, we provide evidence that MRAP2 is likely to be the ancestor of the MRAP family because MRAP2-like protein, but not MRAP, was identified in Petromyzon marinus (sea lamprey), which belong to an ancient basal vertebrate lineage. Later in vertebrate evolution, MRAP2 duplicated and gave rise to MRAP in an event before the emergence of actinopterygii (ray-finned fishes). However, we observed losses of MRAP in sarcopterygii (lobe-finned fish), amphibians and reptiles while both subtypes are present in chicken and most mammals studied. Synteny analysis showed a conserved synteny within same lineages and an inversion of gene order between lineages. An evolutionary rate shift analysis indicated that these genes were under high purifying selection. Overall, this study provides a comprehensive analysis of the evolution and gene repertoire of MRAP and MRAP2. PMID:23370304

Valsalan, Ravisankar; Krishnan, Arunkumar; Almén, Markus Sällman; Fredriksson, Robert; Schiöth, Helgi B

2013-07-01

378

Dermoscopy of accessory nipples in authors’ own study  

PubMed Central

Introduction The accessory nipple (AN) is characterised by its network-like structures, which may suggest the diagnosis of a melanocytic lesion. The knowledge about additional dermoscopic features of AN may greatly minimise the risk of unnecessary surgical excisions. Aim To analyse and present different clinical and dermoscopic forms, in which the AN may appear. Material and methods Ninety AN with dermoscopic features were evaluated in the study, detected in 14 patients between the years 2008 and 2014. Results The most common dermoscopic features of the AN were central, scar-like areas (15/19) and peripheral network-like structures (12/19). A number of cleft-like appearances (8/19) and central network-like structures (7/19) had also been observed. Moreover, among the dermoscopic features, white cobblestone-like structures (7/19), a central round dimpling with a plug (6/19) and fisheye-like structures resembling comedo-like openings (9/19) have all also been noted. There is a statistical significance in the occurrence of white cobblestone-like structures with central network-like structures (Fisher's exact test p = 0.0449). The presence of peripheral network-like structures with the occurrence of central scar-like areas was statistically highly significant (p = 0.0091). The central round dimpling was never observed alongside any central network-like structures in any of the lesions (p = 0.0436). Conclusions Accessory nipples are most commonly characterised by the occurrence of a peripheral network-like structure accompanied by the presence of a scar-like area. PMID:25097482

Szymszal, Jan; Silny, Wojciech

2014-01-01

379

Accessory and stimulating properties of dendritic cells and macrophages isolated from various rat tissues  

PubMed Central

Single cell suspensions of rat lymphoid and nonlymphoid tissues were fractionated on discontinuous gradients of bovine serum albumin into high density and low density subfractions. In general, accessory activity required for responses of periodate-treated T lymphocytes was recovered only in a low density population containing a small percent of the total fractionated cells from lymph nodes, spleen, liver, skin, and peritoneal exudates. Further purification always led to an increase of both accessory activity and number of dendritic cells present in nonrosetting and nonadherent populations. After purification, a high recovery of the total accessory activity was found in fractions that contained a high percentage of dendritic cells resulting in a more than 1,000-fold enrichment in accessory activity per cell. No other fraction obtained during the purification contained significant accessory activity. In all cases, macrophage-enriched populations lacked accessory cell activity. With the exception of peritoneal exudate cell preparations, which contained an inhibitory cell, the level of accessory activity in a given population was always found to be a function of the number of dendritic cells present. Dendritic cells from all sources were nonadherent, nonphagocytic, radio- resistant, and nonspecific esterase negative. They expressed Ia antigens and lacked Fc receptors. Both epidermal and lymph node dendritic cells contain Birbeck granules, subcellular structures previously described only for Langerhans cells. Accessory activity requires viable dendritic cells but is unaffected by 1,000 rad of ?-irradiation. However, ultraviolet irradiation abolished the activity of accessory cells. The cells that responded to periodate were IgG-negative T cells, whereas IgG-positive B cells could not be stimulated under the same conditions. Only periodate-treated T cells and dendritic cells were needed for responses to occur; removal of virtually all macrophages from these purified preparations had no effect. Dendritic cells were also required as stimulators in mixed leukocyte cultures, whereas macrophages, even though Ia positive, were inert. PMID:6211498

Klinkert, WEF; LaBadie, JH; Bowers, WE

1982-01-01

380

MINERAL FACILITIES MAPPING PROJECT  

E-print Network

MINERAL FACILITIES MAPPING PROJECT Yadira Soto-Viruet Supervisor: David Menzie, Yolanda Fong-Sam Minerals Information Team (MIT) USGS Summer Internship 2009 U.S. Department of the Interior U.S. Geological Minerals Information Team (MIT): Annually reports on the minerals facilities of more than 180 countries

Gilbes, Fernando

381

Mineral Scavenger Hunt  

NSDL National Science Digital Library

In this activity, learners participate in a scavenger hunt, searching for and recognizing minerals and products that contain minerals. They make note of their finds on a Mineral Scavenger Hunt checklist. Learners search for the materials in their classroom, at home, or even in stores. This resource includes discussion questions to encourage learner reflection about how minerals play a role in daily life.

National Museum of Natural History

2010-01-01

382

Introduction to Minerals  

NSDL National Science Digital Library

This activity can be used as the introduction for a unit on mineral or crystal structure. It requires the students to create shapes cooperatively and put them together. This is analogous to individual crystals forming or to minerals forming. They will understand that minerals are made up of structures in certain patterns, and that these structures determine some of the properties of the minerals.

383

Calculating a Mineral's Density  

NSDL National Science Digital Library

Students will use the Density=Mass/Volume formula to calculate the density of an unknown mineral. By using water displacement and a triple beam balance students will collect measurements of volume and mass for an unknown mineral. With this data, they will calculate the mineral's density then identify the mineral based on calculated density.

Andrea Distelhurst

2011-10-05

384

Earth's Mineral Evolution  

E-print Network

Earth's Mineral Evolution :: Astrobiology Magazine - earth science - evol...rth science evolution Extreme Life Mars Life Outer Planets Earth's Mineral Evolution Summary (Nov 14, 2008): New research. Display Options: Earth's Mineral Evolution Based on a CIW news release Mineral Kingdom Has Co

Downs, Robert T.

385

Minerals 4 Kids  

NSDL National Science Digital Library

Minerals 4 Kids contains four Web-based activities offered for K-12 Education by the Mineralogical Society of America (MSA). These activities are entitled: Minerals in Your House, Mineral Groups, Mineral Properties, and All About Crystals. Also included are links to Mineral Games, the Rock Cycle diagram that leads to descriptions of the three rock types, and Ask-A-Mineralogist that enables the user to submit a mineralogical question. Many of these activities are linked to other mineralogy-related Web sites. Minerals in Your House is designed to introduce the concept of how minerals are present in common household items found in the bedroom, bathroom, living room, and kitchen. Mineral Groups introduces mineral classification according to chemical composition. The learner can explore each of the seven major chemical groups and several minor chemical groups. Mineral Properties introduces learners to the physical properties of minerals such as hardness, cleavage, streak, color, luster, specific gravity, as well as other miscellaneous properties (i.e., magnetic, effervescence, striations, etc.). Mineral Properties, additionally, contains a five-step Mineral Identification process that uses the physical properties to narrow down a mineral's identity that, ultimately, leads to a Mineral Identification Chart. All About Crystals enables the learner to become familiar with symmetry, crystal symmetry, crystal chemistry, and crystal forms. This activity includes online 3-D models, an activity that enables the user to draw and explore symmetry patterns, a variety of detailed descriptions with figures, and an extensive vocabulary

Nancy McMillan

386

21 CFR 874.4710 - Esophagoscope (flexible or rigid) and accessories.  

Code of Federal Regulations, 2011 CFR

...4710 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES EAR, NOSE, AND THROAT DEVICES Surgical Devices § 874.4710 Esophagoscope (flexible or rigid) and accessories....

2011-04-01

387

21 CFR 874.4760 - Nasopharyngoscope (flexible or rigid) and accessories.  

Code of Federal Regulations, 2010 CFR

...4760 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES EAR, NOSE, AND THROAT DEVICES Surgical Devices § 874.4760 Nasopharyngoscope (flexible or rigid) and accessories....

2010-04-01

388

21 CFR 874.4760 - Nasopharyngoscope (flexible or rigid) and accessories.  

Code of Federal Regulations, 2012 CFR

...4760 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES EAR, NOSE, AND THROAT DEVICES Surgical Devices § 874.4760 Nasopharyngoscope (flexible or rigid) and accessories....

2012-04-01

389

21 CFR 874.4760 - Nasopharyngoscope (flexible or rigid) and accessories.  

Code of Federal Regulations, 2011 CFR

...4760 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES EAR, NOSE, AND THROAT DEVICES Surgical Devices § 874.4760 Nasopharyngoscope (flexible or rigid) and accessories....

2011-04-01

390

21 CFR 874.4680 - Bronchoscope (flexible or rigid) and accessories.  

Code of Federal Regulations, 2012 CFR

...4680 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES EAR, NOSE, AND THROAT DEVICES Surgical Devices § 874.4680 Bronchoscope (flexible or rigid) and accessories....

2012-04-01

391

21 CFR 874.4760 - Nasopharyngoscope (flexible or rigid) and accessories.  

Code of Federal Regulations, 2013 CFR

...4760 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES EAR, NOSE, AND THROAT DEVICES Surgical Devices § 874.4760 Nasopharyngoscope (flexible or rigid) and accessories....

2013-04-01

392

26 CFR 48.4061(b)-3 - Rebuilt, reconditioned, or repaired parts or accessories.  

Code of Federal Regulations, 2011 CFR

...of worn parts) of automobile parts or accessories, such as fuel pumps, water pumps, carburetors, distributors, shock absorbers, windshield-wiper motors, brake shoes, clutch disks, voltage regulators, and other parts or...

2011-04-01

393

26 CFR 48.4061(b)-3 - Rebuilt, reconditioned, or repaired parts or accessories.  

Code of Federal Regulations, 2010 CFR

...of worn parts) of automobile parts or accessories, such as fuel pumps, water pumps, carburetors, distributors, shock absorbers, windshield-wiper motors, brake shoes, clutch disks, voltage regulators, and other parts or...

2010-04-01

394

26 CFR 48.4061(b)-3 - Rebuilt, reconditioned, or repaired parts or accessories.  

Code of Federal Regulations, 2012 CFR

...of worn parts) of automobile parts or accessories, such as fuel pumps, water pumps, carburetors, distributors, shock absorbers, windshield-wiper motors, brake shoes, clutch disks, voltage regulators, and other parts or...

2012-04-01

395

26 CFR 48.4061(b)-3 - Rebuilt, reconditioned, or repaired parts or accessories.  

Code of Federal Regulations, 2013 CFR

...of worn parts) of automobile parts or accessories, such as fuel pumps, water pumps, carburetors, distributors, shock absorbers, windshield-wiper motors, brake shoes, clutch disks, voltage regulators, and other parts or...

2013-04-01

396

21 CFR 874.4680 - Bronchoscope (flexible or rigid) and accessories.  

Code of Federal Regulations, 2011 CFR

...4680 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES EAR, NOSE, AND THROAT DEVICES Surgical Devices § 874.4680 Bronchoscope (flexible or rigid) and accessories....

2011-04-01

397

21 CFR 874.4680 - Bronchoscope (flexible or rigid) and accessories.  

Code of Federal Regulations, 2013 CFR

...4680 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES EAR, NOSE, AND THROAT DEVICES Surgical Devices § 874.4680 Bronchoscope (flexible or rigid) and accessories....

2013-04-01

398

21 CFR 874.4760 - Nasopharyngoscope (flexible or rigid) and accessories.  

Code of Federal Regulations, 2014 CFR

...4760 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES EAR, NOSE, AND THROAT DEVICES Surgical Devices § 874.4760 Nasopharyngoscope (flexible or rigid) and accessories....

2014-04-01

399

21 CFR 874.4680 - Bronchoscope (flexible or rigid) and accessories.  

Code of Federal Regulations, 2010 CFR

...4680 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES EAR, NOSE, AND THROAT DEVICES Surgical Devices § 874.4680 Bronchoscope (flexible or rigid) and accessories....

2010-04-01

400

21 CFR 874.4710 - Esophagoscope (flexible or rigid) and accessories.  

Code of Federal Regulations, 2014 CFR

...4710 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES EAR, NOSE, AND THROAT DEVICES Surgical Devices § 874.4710 Esophagoscope (flexible or rigid) and accessories....

2014-04-01

401

21 CFR 874.4710 - Esophagoscope (flexible or rigid) and accessories.  

Code of Federal Regulations, 2013 CFR

...4710 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES EAR, NOSE, AND THROAT DEVICES Surgical Devices § 874.4710 Esophagoscope (flexible or rigid) and accessories....

2013-04-01

402

21 CFR 874.4710 - Esophagoscope (flexible or rigid) and accessories.  

Code of Federal Regulations, 2012 CFR

...4710 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES EAR, NOSE, AND THROAT DEVICES Surgical Devices § 874.4710 Esophagoscope (flexible or rigid) and accessories....

2012-04-01

403

21 CFR 882.4300 - Manual cranial drills, burrs, trephines, and their accessories  

Code of Federal Regulations, 2014 CFR

...cranial drills, burrs, trephines, and their accessories are bone cutting and drilling instruments that are used without a power source on a patient's skull. (b) Classification. Class II (performance...

2014-04-01

404

21 CFR 882.4300 - Manual cranial drills, burrs, trephines, and their accessories  

Code of Federal Regulations, 2013 CFR

...cranial drills, burrs, trephines, and their accessories are bone cutting and drilling instruments that are used without a power source on a patient's skull. (b) Classification. Class II (performance...

2013-04-01

405

21 CFR 882.4300 - Manual cranial drills, burrs, trephines, and their accessories  

Code of Federal Regulations, 2012 CFR

...cranial drills, burrs, trephines, and their accessories are bone cutting and drilling instruments that are used without a power source on a patient's skull. (b) Classification. Class II (performance...

2012-04-01

406

26 CFR 48.4062(a)-1 - Specific parts or accessories.  

Code of Federal Regulations, 2013 CFR

...EXCISE TAXES MANUFACTURERS AND RETAILERS EXCISE TAXES Motor Vehicles, Tires, Tubes, Tread Rubber, and Taxable Fuel Automotive and Related Items § 48.4062(a)-1 Specific parts or accessories. Spark plugs, storage batteries, leaf...

2013-04-01

407

26 CFR 48.4062(b)-1 - Rebuilt parts or accessories sold on an exchange basis.  

Code of Federal Regulations, 2011 CFR

...EXCISE TAXES MANUFACTURERS AND RETAILERS EXCISE TAXES Motor Vehicles, Tires, Tubes, Tread Rubber, and Taxable Fuel Automotive and Related Items § 48.4062(b)-1 Rebuilt parts or accessories sold on an exchange basis. The sale price...

2011-04-01

408

26 CFR 48.4062(b)-1 - Rebuilt parts or accessories sold on an exchange basis.  

Code of Federal Regulations, 2013 CFR

...EXCISE TAXES MANUFACTURERS AND RETAILERS EXCISE TAXES Motor Vehicles, Tires, Tubes, Tread Rubber, and Taxable Fuel Automotive and Related Items § 48.4062(b)-1 Rebuilt parts or accessories sold on an exchange basis. The sale price...

2013-04-01

409

26 CFR 48.4062(a)-1 - Specific parts or accessories.  

Code of Federal Regulations, 2012 CFR

...EXCISE TAXES MANUFACTURERS AND RETAILERS EXCISE TAXES Motor Vehicles, Tires, Tubes, Tread Rubber, and Taxable Fuel Automotive and Related Items § 48.4062(a)-1 Specific parts or accessories. Spark plugs, storage batteries, leaf...

2012-04-01

410

26 CFR 48.4062(b)-1 - Rebuilt parts or accessories sold on an exchange basis.  

Code of Federal Regulations, 2012 CFR

...EXCISE TAXES MANUFACTURERS AND RETAILERS EXCISE TAXES Motor Vehicles, Tires, Tubes, Tread Rubber, and Taxable Fuel Automotive and Related Items § 48.4062(b)-1 Rebuilt parts or accessories sold on an exchange basis. The sale price...

2012-04-01

411

26 CFR 48.4062(a)-1 - Specific parts or accessories.  

Code of Federal Regulations, 2011 CFR

...EXCISE TAXES MANUFACTURERS AND RETAILERS EXCISE TAXES Motor Vehicles, Tires, Tubes, Tread Rubber, and Taxable Fuel Automotive and Related Items § 48.4062(a)-1 Specific parts or accessories. Spark plugs, storage batteries, leaf...

2011-04-01

412

One nose, one brain: contribution of the main and accessory olfactory system to chemosensation.  

PubMed

The accessory olfactory system is present in most tetrapods. It is involved in the perception of chemical stimuli, being implicated also in the detection of pheromones. However, it is sensitive also to some common odorant molecules, which have no clear implication in intraspecific chemical communication. The accessory olfactory system may complement the main olfactory system and may contribute different perceptual features to the construction of a unitary representation, which merges the different chemosensory qualities. Crosstalk between the main and accessory olfactory systems occurs at different levels of central processing, in brain areas where the inputs from the two systems converge. Interestingly, centrifugal projections from more caudal brain areas are deeply involved in modulating both main and accessory sensory processing. A high degree of interaction between the two systems may be conceived and partial overlapping appears to occur in many functions. Therefore, the central chemosensory projections merge inputs from different organs to obtain a complex chemosensory picture. PMID:23162438

Mucignat-Caretta, Carla; Redaelli, Marco; Caretta, Antonio

2012-01-01

413

21 CFR 876.5880 - Isolated kidney perfusion and transport system and accessories.  

Code of Federal Regulations, 2013 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Therapeutic Devices § 876.5880 Isolated kidney perfusion and transport system and accessories. (a)...

2013-04-01

414

21 CFR 876.5880 - Isolated kidney perfusion and transport system and accessories.  

Code of Federal Regulations, 2014 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Therapeutic Devices § 876.5880 Isolated kidney perfusion and transport system and accessories. (a)...

2014-04-01

415

21 CFR 876.5880 - Isolated kidney perfusion and transport system and accessories.  

Code of Federal Regulations, 2010 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Therapeutic Devices § 876.5880 Isolated kidney perfusion and transport system and accessories. (a)...

2010-04-01

416

21 CFR 876.5880 - Isolated kidney perfusion and transport system and accessories.  

Code of Federal Regulations, 2012 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Therapeutic Devices § 876.5880 Isolated kidney perfusion and transport system and accessories. (a)...

2012-04-01

417

21 CFR 876.5880 - Isolated kidney perfusion and transport system and accessories.  

Code of Federal Regulations, 2011 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GASTROENTEROLOGY-UROLOGY DEVICES Therapeutic Devices § 876.5880 Isolated kidney perfusion and transport system and accessories. (a)...

2011-04-01

418

21 CFR 878.4400 - Electrosurgical cutting and coagulation device and accessories.  

Code of Federal Regulations, 2010 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GENERAL AND PLASTIC SURGERY DEVICES Surgical Devices § 878.4400 Electrosurgical cutting and coagulation device and accessories....

2010-04-01

419

21 CFR 878.4200 - Introduction/drainage catheter and accessories.  

Code of Federal Regulations, 2010 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GENERAL AND PLASTIC SURGERY DEVICES Surgical Devices § 878.4200 Introduction/drainage catheter and accessories. (a)...

2010-04-01

420

21 CFR 878.4820 - Surgical instrument motors and accessories/attachments.  

Code of Federal Regulations, 2010 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GENERAL AND PLASTIC SURGERY DEVICES Surgical Devices § 878.4820 Surgical instrument motors and accessories/attachments. (a)...

2010-04-01

421

21 CFR 888.3030 - Single/multiple component metallic bone fixation appliances and accessories.  

Code of Federal Regulations, 2010 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES ORTHOPEDIC DEVICES Prosthetic Devices § 888.3030 Single/multiple component metallic bone fixation appliances and accessories. (a)...

2010-04-01

422

21 CFR 888.3030 - Single/multiple component metallic bone fixation appliances and accessories.  

Code of Federal Regulations, 2012 CFR

...FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES ORTHOPEDIC DEVICES Prosthetic Devices § 888.3030 Single/multiple component metallic bone fixation appliances and accessories. (a)...

2012-04-01

423

21 CFR 882.4300 - Manual cranial drills, burrs, trephines, and their accessories  

Code of Federal Regulations, 2010 CFR

...cranial drills, burrs, trephines, and their accessories are bone cutting and drilling instruments that are used without a power source on a patient's skull. (b) Classification. Class II (performance...

2010-04-01

424

21 CFR 882.4300 - Manual cranial drills, burrs, trephines, and their accessories  

Code of Federal Regulations, 2011 CFR

...cranial drills, burrs, trephines, and their accessories are bone cutting and drilling instruments that are used without a power source on a patient's skull. (b) Classification. Class II (performance...

2011-04-01

425

21 CFR 878.4820 - Surgical instrument motors and accessories/attachments.  

Code of Federal Regulations, 2012 CFR

... FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GENERAL AND PLASTIC SURGERY DEVICES Surgical Devices § 878.4820 Surgical instrument motors and accessories/attachments. (a)...

2012-04-01

426

21 CFR 878.4200 - Introduction/drainage catheter and accessories.  

Code of Federal Regulations, 2013 CFR

... FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GENERAL AND PLASTIC SURGERY DEVICES Surgical Devices § 878.4200 Introduction/drainage catheter and accessories. (a)...

2013-04-01

427

21 CFR 878.4200 - Introduction/drainage catheter and accessories.  

Code of Federal Regulations, 2011 CFR

... FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GENERAL AND PLASTIC SURGERY DEVICES Surgical Devices § 878.4200 Introduction/drainage catheter and accessories. (a)...

2011-04-01

428

21 CFR 878.4400 - Electrosurgical cutting and coagulation device and accessories.  

Code of Federal Regulations, 2012 CFR

... FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GENERAL AND PLASTIC SURGERY DEVICES Surgical Devices § 878.4400 Electrosurgical cutting and coagulation device and accessories. (a)...

2012-04-01

429

21 CFR 878.4820 - Surgical instrument motors and accessories/attachments.  

Code of Federal Regulations, 2013 CFR

... FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GENERAL AND PLASTIC SURGERY DEVICES Surgical Devices § 878.4820 Surgical instrument motors and accessories/attachments. (a)...

2013-04-01

430

21 CFR 878.4200 - Introduction/drainage catheter and accessories.  

Code of Federal Regulations, 2012 CFR

... FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GENERAL AND PLASTIC SURGERY DEVICES Surgical Devices § 878.4200 Introduction/drainage catheter and accessories. (a)...

2012-04-01

431

21 CFR 878.4400 - Electrosurgical cutting and coagulation device and accessories.  

Code of Federal Regulations, 2013 CFR

... FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GENERAL AND PLASTIC SURGERY DEVICES Surgical Devices § 878.4400 Electrosurgical cutting and coagulation device and accessories. (a)...

2013-04-01

432

21 CFR 878.4400 - Electrosurgical cutting and coagulation device and accessories.  

Code of Federal Regulations, 2014 CFR

... FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GENERAL AND PLASTIC SURGERY DEVICES Surgical Devices § 878.4400 Electrosurgical cutting and coagulation device and accessories. (a)...

2014-04-01

433

21 CFR 878.4820 - Surgical instrument motors and accessories/attachments.  

Code of Federal Regulations, 2011 CFR

... FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GENERAL AND PLASTIC SURGERY DEVICES Surgical Devices § 878.4820 Surgical instrument motors and accessories/attachments. (a)...

2011-04-01

434

21 CFR 878.4400 - Electrosurgical cutting and coagulation device and accessories.  

Code of Federal Regulations, 2011 CFR

... FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GENERAL AND PLASTIC SURGERY DEVICES Surgical Devices § 878.4400 Electrosurgical cutting and coagulation device and accessories. (a)...

2011-04-01

435

21 CFR 878.4200 - Introduction/drainage catheter and accessories.  

Code of Federal Regulations, 2014 CFR

... FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GENERAL AND PLASTIC SURGERY DEVICES Surgical Devices § 878.4200 Introduction/drainage catheter and accessories. (a)...

2014-04-01

436

21 CFR 878.4820 - Surgical instrument motors and accessories/attachments.  

Code of Federal Regulations, 2014 CFR

... FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GENERAL AND PLASTIC SURGERY DEVICES Surgical Devices § 878.4820 Surgical instrument motors and accessories/attachments. (a)...

2014-04-01

437

Identification of Fiber Orientation in Left Free-Wall Accessory Pathways: Implication for Radiofrequency Ablation  

Microsoft Academic Search

Previous reports on the anatomic discordance between atrial andventricular insertion sites of left free-wall accessory pathways werelimited and their findings were controversial. The purpose of this studywas to explore the fiber orientation and related electrophysiologiccharacteristics of left free-wall accessory pathways. The study populationcomprised 96 consecutive patients with a single left free-wall accessorypathway (33 manifest and 63 concealed pathways), who underwentelectrophysiologic

Ching-Tai Tai; Shih-Ann Chen; Chern-En Chiang; Shih-Huang Lee; Zu-Chi Wen; Yi-Jen Chen; Wen-Chung Yu; Jin-Long Huang; Mau-Song Chang

1997-01-01

438

Functional synapse formation between cultured rat accessory olfactory bulb neurons and vomeronasal pockets.  

PubMed

To investigate the interaction between vomeronasal receptor neurons and accessory olfactory bulb neurons during pheromonal signal processing and specific synapse formation, partially dissociated rat vomeronasal receptor neurons were co-cultured with accessory olfactory bulb neurons. Between 7 and 14 days in co-culture, a few bundles of fibers from a spherical structure, termed the vomeronasal pocket, of cultured vomeronasal receptor neurons extended to the accessory olfactory bulb neurons. An optical recording of the intracellular Ca(2+) concentration was used to monitor the synaptic activation of cultured accessory olfactory bulb neurons. Electrical stimulation of the vomeronasal pocket between 7 and 14 days in co-culture had no effects on most of the cultured neurons tested, although it occasionally evoked weak responses in a small number of neurons. In contrast, vomeronasal pocket stimulation after 21 days in co-culture evoked clear calcium transients in a substantial number of cultured accessory olfactory bulb neurons. These responses of accessory olfactory bulb neurons were reversibly suppressed by the application of 6-cyano-7-nitroquinoxaline-2,3-dione; the calcium transients disappeared in most of the neurons and were diminished in the others. The application of d-2-amino-5-phosphonopentanoic acid partially affected the calcium transients, but blocked spontaneous calcium increases, which were observed repeatedly in accessory olfactory bulb-alone cultures. The application of both 6-cyano-7-nitroquinoxaline-2,3-dione and d-2-amino-5-phosphonopentanoic acid completely blocked the evoked calcium transients. These results suggest that functional glutamatergic synapses between vomeronasal receptor neurons and accessory olfactory bulb neurons were formed at around 21 days in co-culture. PMID:16677769

Muramoto, K; Huang, G-Z; Taniguchi, M; Kaba, H

2006-08-11

439

Bidirectional cavopulmonary shunt: is accessory pulsatile flow, good or bad?q  

Microsoft Academic Search

Objective: Evaluation of the effect and long-term outcome of accessory pulsatile blood flow versus classical bi-directional cavopulmonary connection (BCPC). Methods: Retrospective review of the medical and surgical records. Results: Two-hundred and five patients (119 boys, 86 girls) underwent BCPC from 1990 to 1996. Accessory pulsatile flow was present in 68%, flow being maintained through the pulmonary trunc in 46%, systemic-to-pulmonary

Henry J. C. M. van de Wal; Ruth Ouknine; Daniel Tamisier; Marilyne Levy; Pascal R. Vouhe; Francine Leca

2010-01-01

440

Hair follicle nevi and accessory tragi: variable quantity of adipose tissue in connective tissue framework.  

PubMed

Controversy exists about the histologic differences between hair follicle nevi and accessory tragi. We examined 10 congenital lesions histologically, possible diagnoses of which were hair follicle nevi or accessory tragi. Two specimens out of the 10 had tiny, mature hair follicles surrounded by thick fibrous root sheaths, a few fat cells, and no cartilage. The subcutaneous fat cells of their bases were segmented by a connective tissue framework. They had histologic features of hair follicle nevi. One specimen had cartilage and abundant fat cells with a connective tissue framework in the nodule, as well as a conglomeration of numerous well-differentiated hair follicles. It possessed both elements of a hair follicle nevus and an accessory tragus. Seven specimens had abundant subcutaneous fat and showed a prominent connective tissue framework. These were typical accessory tragi. The present study suggests that the number of fat cells in the nodule or papule differs between these two conditions. All the lesions studied revealed a connective tissue framework in the subcutaneous fat. Histologic features of both hair follicle nevi and accessory tragi can coexist in a single lesion. Hair follicle nevi may represent incomplete accessory tragi with scant fat cells. PMID:9436838

Ban, M; Kamiya, H; Yamada, T; Kitajima, Y

1997-01-01

441

Macaque accessory optic system: II. Connections with the pretectum  

SciTech Connect

Connections of the accessory optic system (AOS) with the pretectum are described in the macaque monkey. Injections of tritiated amino acids in the pretectum demonstrate a major contralateral projection to the dorsal (DTN), lateral (LTN), and medial (MTN) terminal nuclei of the AOS and a sparser projection to the ipsilateral LTN. Injections of retrograde tracers, Fast Blue (FB), or wheat germ agglutinin horseradish peroxidase (WGA-HRP) plus nonconjugated horseradish peroxidase (HRP) in the LTN show that the pretectal-LTN projection originates from two nuclei. The main source of pretectal efferents to the LTN is from the pretectal olivary nucleus (OPN) and is entirely contralateral. This projection, which appears unique to primates, originates from the large multipolar cells of the OPN. In addition to this projection, the nucleus of the optic tract (NOT) projects to the ipsilateral LTN, as in nonprimates. Injection of WGA-HRP in the pretectum shows a reciprocal predominantely ipsilateral projection from the LTN to the pretectum. Retinas were observed after injection of FB in the LTN. The retinal ganglion cells projecting to the AOS are mainly distributed near the fovea and in the nasal region of the contralateral eye, suggesting a nasotemporal pattern of decussation. The demonstration of a direct connection between LTN and OPN forces to a reconsideration of the functional role of the AOS. Previous descriptions of luminance responsive cells in the LTN support a possible participation of this nucleus in the control of the pupillary light reflex.

Baleydier, C.; Magnin, M.; Cooper, H.M. (Vision et Motricite, Bron (France))

1990-12-08

442

Comparative morphology of the accessory olfactory bulb in bats.  

PubMed Central

Bouin-perfused brains of 148 bats (76 species, 48 genera, 8 families) were examined in serial sections for the presence of an accessory olfactory bulb. A moderate to well developed AOB was identified in 26 species. However, absence of an AOB in a particular species does not preclude its presence in some other species of that genus. Descriptions and measurements of the AOBs of each species are reported. The unmyelinated vomeronasal nerve enters the bulb medially and posteriorly. The glomeruli, variable in diameter, appear better circumscribed than previously described. Mitral cells often form thick layers, up to five cells deep, which sometimes reach the dorsolateral surface of the bulb formation. Both external and internal plexiform layers are thin. The latter, however is seen only in a few species. The internal granular layer, reaching the ventricular ependyma in some species, is a prominent component of the bulb. The pars dorsalis of the lateral olfactory tract usually courses between the mitral and internal granular layers. The chiropteran AOB does not differ in significant detail from that of insectivores, primates and other mammals. The occurrence of a functional vomeronasal system in the frugivorous, nectarivorous, and sanguivorous Phyllosotomatidae points to a primary functional role of this system in feeding strategy, at least in bats. Images Fig. 1 Fig. 2 Fig. 3 Fig. 4 Fig. 5 Fig. 6 Fig. 7 Fig. 8 Fig. 9 Fig. 10 Fig. 11 Fig. 12 Fig. 13 Fig. 14 PMID:7400042

Frahm, H D; Bhatnagar, K P

1980-01-01

443

Multivariate proteomic profiling identifies novel accessory proteins of coated vesicles  

PubMed Central

Despite recent advances in mass spectrometry, proteomic characterization of transport vesicles remains challenging. Here, we describe a multivariate proteomics approach to analyzing clathrin-coated vesicles (CCVs) from HeLa cells. siRNA knockdown of coat components and different fractionation protocols were used to obtain modified coated vesicle-enriched fractions, which were compared by stable isotope labeling of amino acids in cell culture (SILAC)-based quantitative mass spectrometry. 10 datasets were combined through principal component analysis into a “profiling” cluster analysis. Overall, 136 CCV-associated proteins were predicted, including 36 new proteins. The method identified >93% of established CCV coat proteins and assigned >91% correctly to intracellular or endocytic CCVs. Furthermore, the profiling analysis extends to less well characterized types of coated vesicles, and we identify and characterize the first AP-4 accessory protein, which we have named tepsin. Finally, our data explain how sequestration of TACC3 in cytosolic clathrin cages causes the severe mitotic defects observed in auxilin-depleted cells. The profiling approach can be adapted to address related cell and systems biological questions. PMID:22472443

Antrobus, Robin; Hirst, Jennifer; Bhumbra, Gary S.; Kozik, Patrycja; Jackson, Lauren P.; Sahlender, Daniela A.

2012-01-01

444

Two speed accessory transmission with optional neutral mode  

SciTech Connect

An underdrive accessory transmission associated with an engine is described comprising: a planetary gear set comprising a sun gear having an integrally formed shaft planet gears positioned about and drivingly engaging the sun gear, a planet gear carrier, and a ring gear positioned about and drivingly engaging the planet gears, wherein the ring gear provides rotational input to the transmission from the engine; a fixed cover for the transmission; cone clutch slidably affixed on the shaft of the sun gear and being capable of axial movement along the shaft; means for sliding the cone clutch axially along the shaft of the sun gear; an output shaft, the planet gear carrier being affixed about the output shaft; and a one way clutch and support bearing being positioned between the sun gear and the output shaft. The clutch allows the output shaft to rotate only in the direction of engine rotation, wherein the cone clutch provides a direct drive from the engine to the output shaft when it is engaged with the ring gear, the cone clutch provides a neutral mode of operation when it is disengaged from both the ring gear and the transmission cover, and the cone clutch provides an underdrive to the output shaft when it is engaged with the cover.

Sivalingam, R.

1987-11-17

445

Mineral Spectroscopy Server  

NSDL National Science Digital Library

This server is primarily dedicated to providing information about color in minerals and access to data on mineral absorption in the visible, infrared, Raman and Mossbauer spectra. Both data coordinates and images of the spectra are available for selected minerals. Most data on the server were obtained in the Caltech mineral spectroscopy labs, but individuals throughout the world also contribute to this ever growing community resource. In addition to data files, the site provides an extensive list of references to papers on mineral optical spectroscopy. Citations are available sorted both by mineral name and by first authors of papers.

George Rossman

446

Ohio Mineral Resources Management  

NSDL National Science Digital Library

Provides information about Mineral Resources in Ohio and management. Mine safety, oil and gas, coal mining, industrial minerals, and abandoned mined lands are related subheadings for the site. Good for finding history, factual reports, programs, regulations and policies.

447

Bartering for Minerals.  

ERIC Educational Resources Information Center

Presents an activity in which students are assigned occupations that rely on specific minerals. To obtain the needed minerals, students learn how to trade services and commodities. Includes details on preparation, modeling behaviors, and printed materials. (DDR)

May, Kathie

2002-01-01

448

Sedimentary and Related Minerals  

NSDL National Science Digital Library

In this three-part exercise, students study hand samples and thin sections of sedimentary minerals and rocks. Part one - Box of Rocks: Students examine a tray of Halides, Carbonates, Borates, and Clays and record their physical properties, composition, habit, and occurence. They note chemical and physical similarities and differences of the minerals. Part two - Definitions: Define a list of terms relevent to the lab. Part three - Minerals in Thin Section: Observe sedimentary minerals in thin section and answer questions about them.

Dexter Perkins

449

Color in Minerals  

NSDL National Science Digital Library

Why do minerals have color? When is that color diagnostic, and when is it likely to fool you? Why is color important, and what can it tell us about the chemistry of minerals? This exercise will try to answer some of these questions, and to introduce students to the fascinating world of mineral spectroscopy, where chemistry meets mineralogy.

Darby Dyar

450

Minerals in our Environment  

NSDL National Science Digital Library

This downloadable poster (36 in. by 60 in.) describes how minerals are used in household substances and objects, listed by name, with numbers corresponding to locations in a typical house. For example, in the kitchen, appliances contain steel and copper, clay minerals are found in china, and table salt contains the mineral halite.

451

Mineral Properties Sheets  

NSDL National Science Digital Library

These sheets are designed to give students a framework for making observations of minerals in hand specimen and (for selected minerals) in thin section. I place most of the emphasis on the distinguishing properties, rather than requiring an exhaustive list. Students use hand specimen observation, thin section observation (for selected minerals) and references to complete the forms.

Dave Hirsch

452

Regulation of the epithelial sodium channel by accessory proteins.  

PubMed Central

The epithelial sodium channel (ENaC) is of fundamental importance in the control of sodium fluxes in epithelial cells. Modulation of sodium reabsorption through the distal nephron ENaC is an important component in the overall control of sodium balance, blood volume and thereby of blood pressure. This is clearly demonstrated by rare genetic disorders of sodium-channel activity (Liddle's syndrome and pseudohypoaldosteronism type 1), associated with contrasting effects on blood pressure. The mineralocorticoid aldosterone is a well-established modulator of sodium-channel activity. Considerable insight has now been gained into the intracellular signalling pathways linking aldosterone-mediated changes in gene transcription with changes in ion transport. Activating pathways include aldosterone-induced proteins and especially the serum- and glucocorticoid-inducible kinase (SGK) and the small G-protein, K-Ras 2A. Targeting of the ENaC for endocytosis and degradation is now emerging as a major mechanism for the down-regulation of channel activity. Several proteins acting in concert are an intrinsic part of this process but Nedd4 (neural precursor cell expressed developmentally down-regulated 4) is of central importance. Other mechanisms known to interact with ENaC and affect sodium transport include channel-activating protease 1 (CAP-1), a membrane-anchored protein, and the cystic fibrosis transmembrane regulator. The implications of research on accessory factors controlling ENaC activity are wide-ranging. Understanding cellular mechanisms controlling ENaC activity may provide a more detailed insight not only of ion-channel abnormalities in cystic fibrosis but also of the link between abnormal renal sodium transport and essential hypertension. PMID:12460120

Gormley, Kelly; Dong, Yanbin; Sagnella, Giuseppe A

2003-01-01

453

VPAC receptors: structure, molecular pharmacology and interaction with accessory proteins.  

PubMed

The vasoactive intestinal peptide (VIP) is a neuropeptide with wide distribution in both central and peripheral nervous systems, where it plays important regulatory role in many physiological processes. VIP displays a large biological functions including regulation of exocrine secretions, hormone release, fetal development, immune responses, etc. VIP appears to exert beneficial effect in neuro-degenerative and inflammatory diseases. The mechanism of action of VIP implicates two subtypes of receptors (VPAC1 and VPAC2), which are members of class B receptors belonging to the super-family of GPCR. This article reviews the current knowledge regarding the structure and molecular pharmacology of VPAC receptors. The structure-function relationship of VPAC1 receptor has been extensively studied, allowing to understand the molecular basis for receptor affinity, specificity, desensitization and coupling to adenylyl cyclase. Those studies have clearly demonstrated the crucial role of the N-terminal ectodomain (N-ted) of VPAC1 receptor in VIP recognition. By using different approaches including directed mutagenesis, photoaffinity labelling, NMR, molecular modelling and molecular dynamic simulation, it has been shown that the VIP molecule interacts with the N-ted of VPAC1 receptor, which is itself structured as a 'Sushi' domain. VPAC1 receptor also interacts with a few accessory proteins that play a role in cell signalling of receptors. Recent advances in the structural characterization of VPAC receptor and more generally of class B GPCRs will lead to the design of new molecules, which could have considerable interest for the treatment of inflammatory and neuro-degenerative diseases. PMID:21951273

Couvineau, Alain; Laburthe, Marc

2012-05-01

454

Differing phagocytic capacities of accessory and main olfactory ensheathing cells and the implication for olfactory glia transplantation therapies.  

PubMed

The rodent olfactory systems comprise the main olfactory system for the detection of odours and the accessory olfactory system which detects pheromones. In both systems, olfactory axon fascicles are ensheathed by olfactory glia, termed olfactory ensheathing cells (OECs), which are crucial for the growth and maintenance of the olfactory nerve. The growth-promoting and phagocytic characteristics of OECs make them potential candidates for neural repair therapies such as transplantation to repair the injured spinal cord. However, transplanting mixed populations of glia with unknown properties may lead to variations in outcomes for neural repair. As the phagocytic capacity of the accessory OECs has not yet been determined, we compared the phagocytic capacity of accessory and main OECs in vivo and in vitro. In normal healthy animals, the accessory OECs accumulated considerably less axon debris than main OECs in vivo. Analysis of freshly dissected OECs showed that accessory OECs contained 20% less fluorescent axon debris than main OECs. However, when assayed in vitro with exogenous axon debris added to the culture, the accessory OECs phagocytosed almost 20% more debris than main OECs. After surgical removal of one olfactory bulb which induced the degradation of main and accessory olfactory sensory axons, the accessory OECs responded by phagocytosing the axon debris. We conclude that while accessory OECs have the capacity to phagocytose axon debris, there are distinct differences in their phagocytic capacity compared to main OECs. These distinct differences may be of importance when preparing OECs for neural transplant repair therapies. PMID:25752729

Nazareth, Lynnmaria; Tello Velasquez, Johana; Lineburg, Katie E; Chehrehasa, Fatemeh; St John, James A; Ekberg, Jenny A K

2015-03-01

455

Metamorphic Rocks and Minerals  

NSDL National Science Digital Library

In this three-part exercise, students study hand samples and thin sections of important metamorphic rocks and minerals. Part one - Box of Rocks: Students examine trays of metamorphic rocks and minerals and record their physical properties, composition, and habit. They note chemical and physical similarities and differences and identify the rock samples and minerals they contain. Part two - Definitions: Define a list of terms relevent to the lab. Part three - Minerals in Thin Section: Observe minerals in thin section and answer questions about them.

Dexter Perkins

456

Post-splenectomy intrapancreatic accessory spleen mimicking endocrine tumor of the pancreas  

PubMed Central

INTRODUCTION Intrapancreatic accessory spleen is an uncommon congenital abnormality of the spleen with no indication for surgical intervention. Among the few cases reported, IPAS coexisted with a normal spleen. We here report the first case of IPAS arising a couple years after splenectomy with the appearance of an endocrine tumor of the pancreas. PRESENTATION OF CASE A 62-year-old female presented with a one-week history of left upper quadrant discomfort. She had splenectomy for the treatment of hypersplenism caused by cirrhotic portal hypertension two years before this admission. Her physical examination was unremarkable and laboratory data was within the normal range. Both the ultrasonography and magnetic resonance image revealed a small oval-shaped mass in the tail of her pancreas with the diameter 2 cm or less. A distal pancreatectomy was performed for the suspection of malignant neuroendocrine tumor of the pancreas. An intrapancreatic accessory spleen was confirmed by the pathologic examination. DISCUSSION Intrapancreatic accessory spleen is one kind of congenital ectopic spleen without indication for operative intervention. We present the case to support that intrapancreatic accessory spleen may enlarge through a compensatory mechanism, and raise the awareness of this intrapacreatic entity to avoid unnecessary surgical operation. CONCLUSION IPAS should be highly considered as a differential diagnosis while the lesion is no more than 2.5 cm in diameter and/or other accessory spleens show around the splenic hilum. PMID:25437661

Zhu, Hong-xu; Lou, Wen-hui; Kuang, Tian-tao; Wang, Dan-song

2014-01-01

457

Preliminary summary review of thorium-bearing mineral occurrences in Alaska  

USGS Publications Warehouse

Thorium-bearing minerals are known at 47 localities in Alaska. At these localities the thorium occurs as a major constituent or in minor amounts as an impurity in one or more of the following 12 minerals: allanite, columbite, ellsworthite, eschynite, gummite, monazite, orangite, parisite, thorianite, thorite, xenotime, and zircon. In addition other minerals, such as biotite and sphene, are radioactive and may contain thorium. Several unidentified columbate minerals with uranium or thorium and uranium as major constituents have been recognized at some localities. The distribution, by type of deposit, of the 57 thorium occurrences is as follows: lode - 3, lode and placer - 1, granitic rock - 3, granitic rock and related placer - 14, and placer - 26. Of the four lode occurrences only the radioactive veins at Salmon Bay in southeastern Alaska and the contact metamorphic deposit in the Nixon Fork area of central Alaska warrant further consideration, although insufficient data are available to determine whether these two deposits have commercial possibilities. The remaining occurrences of thorium-bearing minerals in Alaska are limited to placer deposits and disseminations of accessory minerals in granitic rocks. In most of these occurrences the thorium-bearing minerals occur in only trace amounts and consequently warrent little further consideration. More data are needed to determine the possibilities of byproduct recovery of thorium-bearing minerals from several of the gold and tin placers.

Bates, Robert G.; Wedow, Helmuth, Jr.

1952-01-01

458

Arthroscopic Bankart Repair: Accessory Posterior Portal With Slotted Cannula for Lowest Capsulolabral Access  

PubMed Central

We present a novel technique for safe establishment of the accessory posterior portal using a slotted cannula. Arthroscopic Bankart repair is a common procedure. A variety of arthroscopic techniques have been described in the literature, commonly using the posterior portal for visualization and the anterior portal with a working cannula. The accessory posterior portal enables elegant access to the lower part of the capsulolabral junction, a firmer grasp and mobilization of the tissue, quick and easy tool exchange using a slotted cannula, and clearer suture placement because of the flat, direct working angle. The skin incision is made small without the need for an arthroscopic cannula, and the portal location is in a relatively safe zone. The use of the accessory posterior portal along with a slotted cannula shortens the duration of the operative procedure and improves safety and performance. PMID:25126512

Tsvieli, Oren; Atoun, Ehud; Amar, Eyal; Levy, Ofer; Rath, Ehud

2014-01-01

459

Accessory Central Cusp in the Maxillary Second Primary Molars: A Rare Entity among the Rare  

PubMed Central

ABSTRACT% Central accessory cusp in primary molars is an extremely rare condition which is due to abnormal proliferation and folding of inner enamel epithelium during morphodifferentiation stage of tooth development. The extension of the pulp in the cuspal area is often the reason for early involvement of pulp by the caries process. Therefore, early diagnosis and treatment planning is necessary to maintain the integrity of primary dental arch. This article reports such a case of central accessory cusps involving maxillary second primary molars. How to cite this article: Chandra B, Das M. Accessory Central Cusp in the Maxillary Second Primary Molars: A Rare Entity among the Rare. Int J Clin Pediatr Dent 2014;7(3):202-205. PMID:25709302

Das, Monalisa

2014-01-01

460

Malignant Nerve Sheath Tumor of the Spinal Accessory Nerve: A Unique Presentation of a Rare Tumor  

PubMed Central

Background Malignant peripheral nerve sheath tumors (MPNSTs), sarcomas originating from tissues of mesenchymal origin, are rare in patients without a history of neurofibromatosis. Case Report We report a case of an MPNST of the spinal accessory nerve, unassociated with neurofibromatosis, which metastasized to the brain. The tumor, originating in the intrasternomastoid segment of the spinal accessory nerve, was removed. Two years later, the patient presented with focal neurological deficits. Radiographic findings revealed a well-defined 2.2×2.2×2.2 cm, homogeneously enhancing mass in the left parieto-occipital region of the brain surrounded by significant vasogenic edema and mass effect, culminating in a 1-cm midline shift to the right. The mass was surgically removed. The patient had nearly complete recovery of vision, speech, and memory. Conclusions To our knowledge, this is the first documented case of an MPNST arising from an extracranial segment of the spinal accessory nerve and metastasizing to the brain. PMID:22523517

Sheikh, Omair A.; Reaves, Ann; Kralick, Francis A.; Brooks, Ari; Musial, Rachel E.

2012-01-01

461

Analysis of pressure sensitive adhesive tape: I. Evaluation of infrared ATR accessory advances  

PubMed

Attenuated total reflection (ATR), also known as internal reflection spectroscopy (IRS), is a forensically accepted method for infrared (IR) analysis of pressure sensitive adhesive tapes. Advancements of ATR accessories in the last decade have provided the forensic examiner several ATR methods to choose from. These accessories offer a variety of ATR crystal choices with a variety of prices and capabilities. Four different types of pressure sensitive adhesive tapes including duct tape, electrical tape, packaging tape and office tape have been used to compare six different ATR methods. Each of the methods tested offers both benefits and limitaltions which must be considered for the type of sample to be analyze. The intent of this paper is to assist the reader in better understanding ATR techniques, the many differences among currently available ATR accessories and how the method is applied to the analysis of pressure sensitive adhesive tape. PMID:10641924

Merrill; Bartick

2000-01-01

462

Mamillo-accessory notch and foramen: distribution patterns and correlation with superior lumbar facet structure.  

PubMed

The mamillary (MP) and the accessory (AP) processes are two important anatomical landmarks in the lumbar vertebral morphology. These two processes form the mamillo-accessory notch (MAN) between them. In the living, the MP and the AP are connected together by the mamillo-accessory ligament (MAL). The medial branches of lumbar dorsal rami pass underneath the MAL. The MAL often undergoes varied degrees of ossification with diverse notching at the junction of these two processes, often with formation of a discrete foramen (MAF). Reports on the distribution of these notches (MAN) and foramina (MAF) are very few and most of them do not discuss such ossification in context of morphology of adjoining structures in the vertebrae. Lumbar vertebral and sacral specimens were screened for three different categories of narrowing at the mamillo-accessory junction: firstly >1/2 notch, secondly ¾ notch, and thirdly MAF and their distribution patterns were mapped along the lumbar spine. Transverse dimensions of superior facet articulating surfaces [length (a)] and widths of MPs [length (b)] were recorded. Relative widths of the MPs were calculated as index M (a/b). Results suggest associations between the degrees of assimilation of the MPs into the facet joints, the index M values, and the different types of mamillo-accessory junctional anatomy. This study may help to understand if MAN and MAF related dorsal rami entrapment neuropathies arise merely due to osteoarthritic ossification of the MAL or could also be accounted for by facet dimensions or degree of MP-facet fusions that abut close to the mamillo-accessory junctions. PMID:24889272

Mahato, N K

2014-12-01

463

Middle East Respiratory Syndrome Coronavirus Accessory Protein 4a Is a Type I Interferon Antagonist  

PubMed Central

Middle East respiratory syndrome coronavirus (MERS-CoV) causes severe acute respiratory infection with as yet unclear epidemiology. We previously showed that MERS-CoV counteracts parts of the innate immune response in human bronchiolar cells. Here we analyzed accessory proteins 3, 4a, 4b, and 5 for their abilities to inhibit the type I interferon response. Accessory protein 4a was found to block interferon induction at the level of melanoma differentiation-associated protein 5 (MDA5) activation presumably by direct interaction with double-stranded RNA. PMID:24027320

Niemeyer, Daniela; Zillinger, Thomas; Muth, Doreen; Zielecki, Florian; Horvath, Gabor; Suliman, Tasnim; Barchet, Winfried; Weber, Friedemann

2013-01-01

464

Accessory pancreatic lobe with gastric duplication cyst: diagnostic challenges of a rare congenital anomaly.  

PubMed

Reports of combined congenital abnormalities of gastric duplication cysts and accessory pancreatic lobes are rarely reported. Patients with such anomalies may require appropriate surgical intervention tailored to the individual patient for complete cure. A multimodality diagnostic approach using ultrasonography, CT and MRI is useful for appreciation of the relevant anatomy of the congenital abnormality and for proper surgical planning. We present a case of a gastric duplication cyst with accessory pancreatic lobe and ectopic pancreatic rest in a 5-year-old child presenting with symptoms of recurrent pancreatitis. PMID:25766439

Jain, Abhilasha S; Patel, Avani M; Jain, Sharad R; Thakkar, Ashok

2015-01-01

465

Ongoing pain and deformity after an excision of the accessory navicular.  

PubMed

Although a painful accessory navicula and a pes planus often coexist, they are not necessarily causally related, and each condition should be assessed and treated individually. A child or adolescent will notice the rubbing of an accessory navicula against footwear as the foot and boney swelling grows. The cause of persistent local pain such as inadequate bony resection, scar pain, irritation of the tibialis posterior tendon, and so forth should be sought and addressed; management will depend on the specific presentation and previous procedure performed. The cause of the ongoing pain should be investigated. PMID:25129360

Vaughan, Philip; Singh, Dishan

2014-09-01

466

Imaging diagnosis of accessory and cavitated uterine mass, a rare mullerian anomaly  

PubMed Central

Accessory and Cavitated Uterine Mass (ACUM) is a rare form of developmental Mullerian anomaly seen in young females, which presents as chronic recurrent pelvic pain and severe dysmenorrhea. It is an accessory cavity lying within an otherwise normal uterus. It is lined by functional endometrium and surrounded by myometrium-like smooth muscle cells; hence, it bears striking macroscopic and microscopic resemblance to the uterus. Hysterosalpingography (HSG), Ultrasonography (USG), and Magnetic Resonance Imaging (MRI) form the mainstay of diagnostic imaging. The entity is often under diagnosed; therefore, a high index of suspicion combined with HSG and MRI imaging can help in making an accurate diagnosis. PMID:25024530

Jain, Nishchint; Verma, Ritu

2014-01-01

467

Trehalase from the bean-shaped accessory glands and the spermatophore of the male mealworm beetle, Tenebrio molitor  

Microsoft Academic Search

InTenebrio molitor, male adults transfer sperm to the female via a spermatophore or sperm sac. The spermatophore is formed from secretions of the bean-shaped accessory glands (BAGs) and the tubular accessory glands (TAGs) of the male beetle. Trehalase is found in the adult BAGs. During the pupal stage, the activity in the BAGs was very low. After adult ecdysis, the

Toshinobu Yaginuma; George M. Happ

1988-01-01

468

American Strategic Minerals  

SciTech Connect

American Strategic Minerals brings together seven contributors in the fields of marine studies, mining engineering, earth sciences, and economics to discuss and analyze strategic minerals. The future demands of the United States upon limited sources of supply are examined and there is an analysis of alternative sources of strategic minerals from the seabed, including copper, nickel, manganese, and cobalt. The book contains an examination of the investments that the United States has made in developing countries that could affect both the national security and national economy of America in the years ahead. After a review of minerals policy in the United States, the conflicting interests that influence the President and Congress in making decisions about strategic minerals, and other dimensions of strategic minerals, are exposed to clarify both the facts and myths about supply and demand, security and danger, and high and low prices.

Mangone, G.

1984-01-01

469

Insights learned from pBTAi1, a 229-kb accessory plasmid from Bradyrhizobium sp. strain BTAi1 and prevalence of accessory plasmids in other Bradyrhizobium sp. strains  

Microsoft Academic Search

In silico, physiological and in planta analyses were used to characterize pBTAi1, a 229-kb accessory plasmid from Bradyrhizobium sp. strain BTAi1, and assess its potential ecological function under free-living and symbiotic growth conditions. Sequence analysis revealed the presence of an uptake hydrogenase system, a repABC family plasmid replication module and open reading frames encoding type IV secretion system, TraI and

Eddie J Cytryn; Siriluck Jitacksorn; Eric Giraud; Michael J Sadowsky

2008-01-01

470

Minerals Under the Microscope  

NSDL National Science Digital Library

This website provides an easy-to-understand introduction to the basics of optical mineralogy. Topics include the polarized light microscope, mineral shape and cleavage, relief, color and pleochroism, interference colors, extinction angles, twinning, opacity, vibration directions and mineral identification. The site features short, clear descriptions accompanied by photographs and drawings. This website would be useful as a concise introduction to the use of a petrographic microscope in identifying minerals.

Browning, Paul

471

Weathering of Minerals  

NSDL National Science Digital Library

Students determine the % change in mass of mineral samples that have been placed in a rock tumbler. They graph the relationship between the hardness of the mineral and the % change in mass. They then consider why some of the mineral samples do not conform the the relationship they graphed. They investigate the physical properties of the outliers and consider how the physical properties contributed to the rate of weathering, and what kind of weathering occured in the rock tumbler.

Wendy Van Norden

472

USGS: Mineral Resources Program  

NSDL National Science Digital Library

"The Mineral Resources Program funds science to provide and communicate current, impartial information on the occurrence, quality, quantity, and availability of mineral resources." This website divides the mineral resource information, project descriptions, and products for the United States into four main regional categories: Eastern, Central, Western, and Alaska. Researchers can discover new grant opportunities and can obtain access to the National Geochemical Survey's database. Students and educators can find statistics and information on how the United State's supply-and-demand for minerals and materials affects the economy, security, and environment.

473

Mineral Classification Exercise  

NSDL National Science Digital Library

This exercise is designed to help students think about the properties of minerals that are most useful for mineral classification and identification. Students are given a set of minerals and asked to come up with a hierarchical classification scheme (a "key") that can be used to identify different mineral species. They compare their results with the products of other groups. They test the various schemes by applying them to unknown samples. While doing this exercise, the students develop observational and interpretational skill. They also begin to think about the nature of classification systems.

Dexter Perkins

474

Reagan issues mineral policy  

NASA Astrophysics Data System (ADS)

The National Materials and Minerals Program plan and report that President Reagan sent to Congress on April 5 aims to ‘decrease America's minerals vulnerability’ while reducing future dependence on potentially unstable foreign sources of minerals. These goals would be accomplished by taking inventory of federal lands to determine mineral potential; by meeting the stockpile goals set by the Strategic and Critical Material Stockpiling Act; and by establishing a business and political climate that would encourage private-sector research and development on minerals.Now that the Administration has issued its plan, the Subcommittee on Mines and Mining of the House Committee on Interior and Insular Affairs will consider the National Minerals Security Act (NMSA), which was introduced 1 year ago by subcommittee chairman Jim Santini (D-Nev.) [Eos, May 19, 1981, p. 497]. The bill calls for establishing a three-member White-House-level council to coordinate the development of a national minerals policy; amending tax laws to assist the mining industry to make capital investments to locate and produce strategic materials; and creating a revolving fund for the sale and purchase of strategic minerals. In addition, the NMSA bill would allow the secretary of the interior to make previously withdrawn public lands available for mineral development. The subcommittee will hold a hearing on the Administration's plan on May 11. Interior Secretary James Watt has been invited to testify.

475

Minerals by Chemical Composition  

NSDL National Science Digital Library

This interactive periodic table displays a listing of minerals by element, sorted by percent of the element. Clicking on a symbol on the table leads users to information on the element (atomic mass and number, name origin, year of discovery, and a brief description), and to a table listing each mineral known to contain the element in decreasing order by percentage. Each mineral name in the table is linked to additional information on the mineral, such as formula and composition, images, crystallography, physical properties, and many others.

476

Increase in the number of tyrosine hydroxylase-containing neurons in a primary culture system of the rat accessory olfactory bulb by co-culture with vomeronasal pockets  

Microsoft Academic Search

Previously, we established a culture system of the accessory olfactory bulb in order to investigate the functional role of each accessory olfactory bulb neurons in pheromonal signal processing. In the present study, we developed a co-culture system of cultured accessory olfactory bulb neurons with partially dissociated cells of the vomeronasal organ. The dissociated cells of the vomeronasal organ form spherical

K Muramoto; T Osada; M Kato-Negishi; Y Kuroda; M Ichikawa

2003-01-01

477

Optical microscope-cathodoluminescence (OM-CL) imaging as a powerful tool to reveal internal textures of minerals  

NASA Astrophysics Data System (ADS)

Optical microscope-cathodoluminescence (OM-CL) microscopy is a modern luminescence technique with widespread applications in geosciences. Many rock-forming and accessory minerals show specific CL properties that can be successfully used in geoscience and materials science research. One of the most spectacular applications is the visualization of growth textures, alteration, and other internal textures in minerals that are not discernible with other analytical techniques. These results provide information about the real structure of minerals and materials and can be used for the reconstruction of geological processes of mineral formation and subsequent alteration. The information obtained from CL imaging in combination with spectral measurements of the CL emission allows for a more thorough understanding of structural states of solids and/or trace-element incorporation. Additional information can be obtained when luminescence studies are combined with other analytical techniques with high sensitivity and high spatial resolution.

Götze, Jens; Schertl, Hans-Peter; Neuser, Rolf D.; Kempe, Ulf; Hanchar, John M.

2013-06-01

478

PSC 424: Rocks and Minerals  

NSDL National Science Digital Library

This is a webpage designed to give students access to basic information about rocks and minerals. Rocks and Minerals Introduction Video Basic Definitions- Mineral: a solid inorganic substance of natural occurrence Rock: a mixture of minerals Ways to identify a mineral: Hardness Luster (metallic/nonmetallic) Streak Color Rock Song Three basic rock types: Igneous Metamorphic Sedimentary Rock Cycle Animation ...

Ms. Graham

2011-10-13

479

Male Accessory Gland Secretory Proteins in a Few Members of the Drosophila nasuta Subgroup  

Microsoft Academic Search

Male accessory gland secretory proteins in seven members of the Drosophila nasuta subgroup have been analyzed by SDS-PAGE. The study revealed remarkable simplicity in the patterns. The protein fractions, which migrate in three groups, could be categorized as “major” and “minor.” The number of major fractions varies from a maximum of eight to a minimum of four. Group I consists

K. Ravi Ram; S. R. Ramesh

2001-01-01

480

Adaptive Evolution of Recently Duplicated Accessory Gland Protein Genes in Desert Drosophila  

Microsoft Academic Search

The relationship between animal mating system variation and patterns of protein polymorphism and divergence is poorly understood. Drosophila provides an excellent system for addressing this issue, as there is abundant interspecific mating system variation. For example, compared toD.melanogaster subgroup species, repleta group species have higher remating rates, delayed sexual maturity, and several other interesting differences. We previously showed that accessory

Bradley J. Wagstaff; David J. Begun

2007-01-01

481

Hypoalgesic effect of a passive accessory mobilisation technique in patients with lateral ankle pain  

Microsoft Academic Search

A randomised, double blind, repeated measures study was conducted to investigate the initial effects of an accessory mobilisation technique applied to the ankle joint in 13 patients with a unilateral sub-acute ankle supination injury. Ankle dorsiflexion range of motion, pressure pain threshold, visual analogue scale rating of pain during functional activity and ankle functional scores were assessed before and after

Hwee Koon Yeo; Anthony Wright

2011-01-01

482

One-Stop Outpatient Management of Accessory Auricle in Children with Titanium Clip  

PubMed Central

Introduction. Literature on ideal management of accessory auricles is limited. Traditionally, accessory auricles are managed by paediatricians with suture ligation at the base of the accessory auricle to induce ischaemic necrosis (Mehmi et al, 2007). This method can be associated with complications and poor cosmesis thus leading to the vogue of surgical excision ( Frieden et al, 1995; Sebben, 1989). We present our experience in managing these lesions in children with the application of a titanium clip in a one-stop outpatient setting. Methods. Data was collected retrospectively through review of patient records and telephone questionnaire identifying outcomes from the parents' perspective. Results. Of 42 patients, 24 (57.1%) responded. Eleven (26.2%) underwent surgical excision, 6 (14.3%) had no intervention, and 1 (2.4%) was not contactable. All parents were happy with the outcome and would recommend this management to other parents. Twenty-three (96%) had no complications apart from a tiny residual nubbin, which was considered cosmetically acceptable. One child had a residual nubbin that grew in size requiring surgical excision at later stage. Conclusion. Management of accessory auricles by the application of a titanium clip in one-stop outpatient setting is safe, simple, quick, and well tolerated with no need for admission, anaesthesia, or followup due to the low complication rate. PMID:24800069

Laing, Tereze; Milroy, Catherine

2014-01-01

483

Activation of an anatomically distinct subpopulation of accessory olfactory bulb neurons by chemosensory stimulation  

Microsoft Academic Search

Chemosensory cues known as pheromones play a key role in rodent reproductive physiology and social interactions. Pheromone molecules are detected by receptor cells located in the vomeronasal organ and conveyed exclusively to the accessory olfactory bulb, and then to limbic and hypothalamic sites for integration with other factors modulating reproductive physiology. We report here that chemosensory cues from the female

C. A Dudley; R. L Moss

1999-01-01

484

An ephemeral pheromone of female house mice: Perception via the main and accessory olfactory systems  

Microsoft Academic Search

Two experiments examined the chemosensory modalities by which males detect an ephemeral sex pheromone in the freshly voided urine of female mice. Experiment 1 examined the interaction of deafferenting the accessory olfactory system (vomeronasal organ removal) and subsequent sexual experience upon ultrasonic vocalizations by male mice to freshly voided female urine. In general, sexually experienced males vocalized substantially more than

Maurice L. Sipos; Charles J. Wysocki; John G. Nyby; Linda Wysocki; Todd A. Nemura

1995-01-01

485

DETERMINING SEX IN POSTHATCHLING LOGGERHEAD SEA TURTLES USING MULTIPLE GONADAL AND ACCESSORY  

E-print Network

DETERMINING SEX IN POSTHATCHLING LOGGERHEAD SEA TURTLES USING MULTIPLE GONADAL AND ACCESSORY DUCT of the Environment and Earth Sciences, 135 Duke Marine Lab Road, Beaufort, NC 28516, USA ABSTRACT: The sex of young and heteromorphic sex chromosomes, yet internal dimorphic morphology is defined at hatching. We tested

Wyneken, Wyneken Jeanette

486

Detection of Accessory Renal Arteries with Virtual Vascular Endoscopy of the Aorta  

SciTech Connect

Purpose: To evaluate the diagnostic accuracy of virtual vascular endoscopy (VVE) in the detection of accessory renal arteries. Methods: We retrospectively reviewed the CT angiography data sets of 67 patients (29 male and 38 female; age range 17-72 years, mean age 53 years) imaged for the study of the renal arteries, and affected by renovascular hypertension. All patients also had intraarterial digital subtraction angiography (DSA). CT angiography data sets were processed to obtain maximum intensity projection (MIP) and surface-rendered VVE of the aorta. Axial images, MIP, and VVE were evaluated separately and in combination in the detection of accessory renal arteries. Their results in terms of sensitivity and specificity were then compared with DSA. Results: Axial images had a sensitivity of 88% and specificity of 94% for accessory renal artery detection, MIP had a sensitivity of 88% and specificity of 98%, and VVE had a sensitivity of 63% and a specificity of 88% (p < 0.05 vs DSA), but these increased to 88% and 98% respectively if endoscopic views were integrated with the other display techniques. Conclusion: VVE based on surface rendering does not add substantial benefits to CTY angiography; by contrast MIP is the most accurate display technique for the detection of accessory renal arteries.

Neri, Emanuele; Caramella, Davide; Bisogni, Cristina; Laiolo, Edoardo; Trincavelli, Francesco; Viviani, Adriano; Vignali, Claudio; Cioni, Roberto; Bartolozzi, Carlo [Diagnostic and Interventional Radiology, Department of Oncology, University of Pisa, Via Roma 67, I-56100 Pisa (Italy)

1999-01-15

487

Type II Endoleaks Involving an Accessory Renal Artery and the Inferior Mesenteric Artery  

SciTech Connect

Two patients are described with type II endoleaks involving an accessory renal artery and the inferior mesenteric artery. One patient was successfully embolized via the translumbar route. The other continues to be observed; the endoleak is expected to close spontaneously because both the inflow and outflow are significantly compromised.

Martin, E. C., E-mail: emartin@chpnet.org [St. Luke's-Roosevelt Hospital Center, Department of Radiology (United States); Todd, George J. [St. Luke's-Roosevelt Hospital Center, Department of Surgery (United States)

2011-02-15

488

Biosynthesis of Active Bacillus subtilis Urease in the Absence of Known Urease Accessory Proteins  

Microsoft Academic Search

Received 1 June 2005\\/Accepted 27 July 2005 Bacillus subtilis contains urease structural genes but lacks the accessory genes typically required for GTP- dependent incorporation of nickel. Nevertheless, B. subtilis was shown to possess a functional urease, and the recombinant enzyme conferred low levels of nickel-dependent activity to Escherichia coli. Additional investi- gations of the system lead to the suggestion that

Jong Kyong Kim; Scott B. Mulrooney; Robert P. Hausinger

2005-01-01

489

Sexual Selection on Accessory Glands, Genitalia and Protarsal Pads in the Whirligig Beetle Dineutus nigrior Roberts  

E-print Network

Sexual Selection on Accessory Glands, Genitalia and Protarsal Pads in the Whirligig Beetle Dineutus­male competition (e.g. Simmons & Tomkins 1996; Bean & Cook 2001; Kelly 2005; Kodric-Brown et al. 2006 selection the trait often exhibits positive allometry. Mating behavior in whirligig beetles consists

Schulte-Hostedde, Albrecht

490

Tetralogy of Fallot with restrictive ventricular septal defect by accessory tricuspid leaflet tissue  

PubMed Central

In tetralogy of Fallot septal defect is usually large because of malalignment of outlet septum, restrictive defect has been reported rarely. We present a case of tetralogy of Fallot with accessory tricuspid leaflet tissue restricting ventricular septal defect. The report includes echocardiographic and catheter images of this rare presentation of tetralogy of Fallot. PMID:22929828

Soni, Mahipat Raj; Bohara, Deepak A.; Mahajan, Ajay U.; Nathani, Pratap J.

2012-01-01

491

Differences in development and cellular composition between neuronal cultures of rat accessory and main olfactory bulbs  

Microsoft Academic Search

We previously established a primary culture system of the accessory olfactory bulb (AOB) to investigate the functional roles of individual types of neuron in pheromonal signal processing. However, the detailed characteristics of cultured AOB neurons were not yet apparent. In the present study, we address the cytological aspects of cultured AOB neurons using immunocytochemical staining methods. Cultured AOB neurons were

Kazuyo Muramoto; Midori Kato-Negishi; Yoichiro Kuroda; Hideto Kaba; Masumi Ichikawa

2004-01-01

492

Complementary use of computerized tomography and technetium scanning in the diagnosis of accessory spleen  

SciTech Connect

A patient with a previous splenectomy presented with acute gastrointestinal bleeding. He was found to have a benign gastric ulcer, esophagogastric varices, and a mass indenting the gastric fundus. Abdominal computerized tomography and technetium liver-spleen scanning established the diagnosis of an accessory spleen as cause for the mass effect. This diagnostic approach obviated the need for arteriography and exploratory laparotomy.

Joshi, S.N.; Wolverson, M.K.; Cusworth, R.B.; Nair, S.G.; Perrillo, R.P.

1980-11-01

493

Immunohistochemical characterisation of cholinergic nerve fibres supplying accessory genital glands in the pig  

Microsoft Academic Search

Our previous immunohistochemical investigations revealed three major populations of nerve fibres supplying the porcine accessory genital glands (AGG) including noradrenergic, non-noradrenergic putative cholin - ergic and sensory nerve terminals (Kaleczyc et al., 1997). However, it is still unclear whether the non-noradrenergic nerve fibres are cholinergic in nature. The knowledge of the population of cholinergic nerve fibres in mammalian AGG based

M. KLIMCZUK; J. KALECZYC; A. FRANKE-RADOWIECKA; K. CZAJA; P. PODLASZ; M. LAKOMY

2005-01-01

494

Digging into Minnesota Minerals.  

ERIC Educational Resources Information Center

This publication presents students with facts about geology and several learning activities. Topics covered include rocks and minerals, volcanoes and earthquakes, fossils, exploration geology, mining in Minnesota, environmental issues related to mining, mineral uses, mining history, and the geology of Minnesota's state parks. A geologic timetable…

Minnesota State Dept. of Natural Resources, St. Paul.

495

Mineral Image Index  

NSDL National Science Digital Library

This image gallery provides pictures of thousands of mineral specimens, arranged alphabetically. For each specimen, a thumbnail and a larger image are provided. Other information includes a brief description of the specimen being shown, scale bar (when available), locality data, and a link to additional information on the mineral.

496

Minerals Yearbook 1989: Boron  

Microsoft Academic Search

U.S. production and sales of boron minerals and chemicals decreased during the year. Domestically, glass fiber insulation was the largest use for borates, followed by sales to distributors, textile-grade glass fibers, and borosilicate glasses. California was the only domestic source of boron minerals. The United States continued to provide essentially all of its own supply while maintaining a strong position

Lyday

1990-01-01

497

Rocks & Mineral Solitaire  

NSDL National Science Digital Library

This site features a solitaire game designed to help students identify rocks and minerals. The card game would be used by the students after class discussions about rock/mineral categories and classifications. Several sets of the card game, managed by the teacher, would be available for the students. The cards could be used both during and after class.

Andrea J. Catania

498

The Miner's Canary  

ERIC Educational Resources Information Center

Miners used canaries as early warning signals: when a canary gasped for breath, the miners knew there was a problem with the atmosphere in the mine. The experience of people of color in higher education can be used similarly as a diagnostic tool.

Guinier, Lani

2005-01-01

499

Rocks and Minerals  

NSDL National Science Digital Library

This description of rocks and minerals includes representatives of all three major groups: igneous, sedimentary, and metamorphic. Users can access introductory information about the three major rock types and the minerals that form them. A simple rock classification chart is included, with embedded links to a glossary and more detailed material for advanced learners.

500

Minerals in Our Environment  

NSDL National Science Digital Library

This color poster shows how we use minerals in our everyday life. It depicts common household items (furniture, appliances, plumbing fixtures, personal products, etc.) which are keyed by number to short descriptions that provide information on the minerals used in the manufacture of these items.

Frank, Dave