669
669
Apr 30, 2009
04/09
by
Rickard, T. A. (Thomas Arthur), 1864- ed
texts
eye 669
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Book digitized by Google and uploaded to the Internet Archive by user tpb.
Topic: Sulfides
Source: http://books.google.com/books?id=2IoNAAAAYAAJ&oe=UTF-8
14
Topics: Smelting, Sulfides
CIHM Monograph Collection
172
172
May 23, 2013
05/13
by
Lang, W. R. (William Robert), 1870-1925; Carson, C. M. (Charles Macdonald), d. 1960; Mackintosh, J. C
texts
eye 172
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Cover title
Topics: Sulfides, Sulfures
CIHM Monograph Collection
205
205
May 23, 2013
05/13
by
Lang, W. R. (William Robert), 1870-1925; Carson, C. M. (Charles Macdonald), d. 1960
texts
eye 205
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Cover title
Topics: Sulfides, Sulfures
7
7.0
Mar 26, 2021
03/21
by
Jocelyn, P. C
texts
eye 7
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xiii, 404 p. 24 cm
Topics: Thiols, Sulfides
xiii, 116 leaves : 28 cm
Topics: Sulfides, Carbonyl compounds
Thesis (B.S.)--University of Illinois, 1911
Topics: Alloys, Sulfides, Theses
340
340
Jul 11, 2010
07/10
by
Kazmerski, L. L
texts
eye 340
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A group of ternary compound semiconductor (I-III-VI2) thin films for future applications in photovoltaic devices is proposed. The consideration of these materials (CuInSe2, CuInTe2 and especially CuInS2) for long range device development is emphasized. Much of the activity to date has been concerned with the growth and properties of CuInX2 films. X-ray and electron diffraction analyses, Hall mobility and coefficient, resistivity and carrier concentration variations with substrate and film...
Topics: SOLAR CELLS, SPUTTERING, THIN FILMS, CADMIUM SULFIDES, COPPER SULFIDES, PHOTOVOLTAIC CELLS,...
290
290
Jul 21, 2010
07/10
by
Bermudes, D
texts
eye 290
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The effects of light and O2 on glutathione production were determined. Results of light and dark studies under normal and reduced oxygen tensions were compared to determine the effect of reduction in oxygen tension on glutathione levels. The growth rate of Anacystis nidulans and concurrent production of glutathione is presented. The generation of time of Anacystis nidulans was approximately 12 hours. Results of light and dark incubation of Aphanothece halophytica dominated planktonic microbial...
Topics: ELECTRON TRANSFER, OXIDATION, PROTONS, SULFIDES, GROWTH, HYDROGEN, OXIDATION, PROTONS, SULFIDES,...
Bibliography: p. 19
Topics: Geology, Sulfides, Mines and mineral resources
4
4.0
Sep 21, 2021
09/21
by
Torchinskiĭ, I︠U︡. M. (I︠U︡riĭ Moiseevich)
texts
eye 4
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x, 275 p. 24 cm
Topics: Proteins, Thiols, Sulfides, Cystine, Sulfhydryl compounds
2 pages ; 20 cm
Topics: Tonsillitis -- drug therapy, Sulfides -- administration & dosage
427
427
Jul 11, 2010
07/10
by
Chang, C. A
texts
eye 427
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The previously developed technique of a sandwich coating for silicon crystallinity enhancement in silicon films deposited at low temperature is applied to graphite substrates. The measured increase in silicon crystallinity is comparable to that observed earlier using a quartz substrate. The distribution of aluminum in the silicon films is determined using Auger spectroscopic depth profiling. Carbon diffusion from the substrate into the silicon film is shown to be negligible at a substrate...
Topics: CADMIUM SULFIDES, COPPER SULFIDES, SOLAR CELLS, THIN FILMS, ENCAPSULATING, ENERGY CONVERSION...
395
395
Jul 11, 2010
07/10
by
Siekhaus, W. J.; Somorjai, G. A
texts
eye 395
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A surface potential model is developed to explain dopant effects on chemical vapor deposition. Auger analysis of the interaction between allotropic forms of carbon and silicon films has shown Si-C formation for all forms by glassy carbon. LEED intensity measurements have been used to determine the mean square displacement of surface atoms of silicon single crystals, and electron loss spectroscopy has shown the effect of structure and impurities on surface states located within the band gap. A...
Topics: CADMIUM SULFIDES, COPPER SULFIDES, ENERGY CONVERSION EFFICIENCY, SOLAR CELLS, ELECTRICAL...
The leather industry is suffering from the negative impact generated by the pollutionit causes to the environment. Nearly 70% of the pollution loads of BOD, COD, and Total Dissolved Solids (TDS) are generated from soaking, liming, deliming, pickling and tanning and retanning processes. There is an enormous pressure from the various pollution control bodies to regulate and minimize the amount of pollution generated from the leatherprocessing. The need for use of alternative to chemical methods...
Topics: Alkalinity, Acidity, COD, BOD, Tannerywastewater, Sulfides, Chlorides.
173
173
Jun 2, 2011
06/11
by
Kallman, T. R.; Meszaros, P.; Rees, M. J
texts
eye 173
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We present models for reprocessing of an intense flux of X-rays and gamma rays expected in the vicinity of gamma ray burst sources. We consider the transfer and reprocessing of the energetic photons into observable features in the X-ray band, notably the K lines of iron. Our models are based on the assumption that the gas is sufficiently dense to allow the microphysical processes to be in a steady state, thus allowing efficient line emission with modest reprocessing mass and elemental...
Topics: METAL FILMS, POLYCRYSTALS, VAPOR DEPOSITION, COPPER SULFIDES, INDIUM SULFIDES, CRYSTAL STRUCTURE,...
xv, 86 leaves : 28 cm
Topics: Vapor-liquid equilibrium, Carbonyl compounds, Sulfides, Propane
326
326
Jul 11, 2010
07/10
by
Chang, C. A
texts
eye 326
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A surface potential model is proposed to consistently explain the known dopant gas effects on silicon chemical vapor deposition. This model predicts that the effects of the same dopant gases on the diamond deposition rate using methane and carbon tetrachloride should be opposite and similar to those of silane, respectively. Available data are in agreement with this prediction.
Topics: SEMICONDUCTING FILMS, SOLAR CELLS, SPRAYED COATINGS, THIN FILMS, CADMIUM SULFIDES, COPPER SULFIDES,...
365
365
Jul 9, 2010
07/10
by
KLOSS, M
texts
eye 365
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THE DEVELOPMENT OF A WIND WHEEL FOR ELECTRIC POWER GENERATION IS DISCUSSED. THE INTERACTION BETWEEN THE WIND WHEEL AND THE GENERATOR IS ACCOMPLISHED WITH A POWER CONTROL DEVICE TO PREVENT OVERLOADING THE GENERATOR WHEN THE WIND VELOCITY INCREASES. THE SELF-CONTROLLED RUNNING WHEEL OF THE WIND MOTOR ADJUSTS THE BLADE ANGLE OF ATTACK TO COMPENSATE FOR THE WIND VELOCITY. THE GENERATOR MUST BE DIMENSIONED FOR THE GREATEST WIND INTENSITY IN ORDER TO ACCEPT THE ENTIRE WIND WHEEL POWER. THE WIND...
Topics: CADMIUM SULFIDES, REFLECTION, SCINTILLATION, LOW TEMPERATURE, SURFACE PROPERTIES
11 pages, 1 unnumbered folded leaf of plates ; 23 cm
Topics: Refrigeration -- methods, Ice, Sulfides, Ammonia, Equipment and Supplies
239
239
Jul 21, 2010
07/10
by
Caldwell, D.; Sundquist, A. R.; Lawrence, J.; Doyle, A. P
texts
eye 239
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To determine whether a bacterial film forms on sulfur minerals in situ, various sulfur containing and other minerals were incubated in Penitencia Creek. The rate of cell growth and attachment within the surface microenvironment of mineral surfaces was also determined. To determine whether surfaces enriched with soluble sulfur substrates (cysteine, glutathione, thioglycolate, sulfite, and thiosulfate) increased the rate of growth or attachment of natural communities, membrane enrichments were...
Topics: BACTERIA, OXIDATION, PHYSIOLOGY, SULFIDES, CYCLES, MORPHOLOGY, OXYGEN, SULFUR
74
74
Jul 14, 2016
07/16
by
Impact Journals
texts
eye 74
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Corrosion is derived from the Latin word “corrosus” meaning away. It can be defined as “the destruction or deterioration and consequent loss of metals through chemical or electrochemical attack by the environment”. The process of corrosion is the transformation of pure metal into its undesired metallic compounds. The life time of metal gets shortened by the corrosion process. Most metals [except noble metals] occur in the form of their compounds such as oxides, sulfides, carbonates,...
Topics: Corrosion Process, Sulfides, Carbonates, Chlorides, Furfuraldehyde, Salicylaldehyde, Anisaldehyde
A process has been devised for making ternary (specifically, CuInS2) nanocrystals for use as quantum dots (QDs) in a contemplated next generation of high-efficiency solar photovoltaic cells. The process parameters can be chosen to tailor the sizes (and, thus, the absorption and emission spectra) of the QDs.
Topics: NASA Technical Reports Server (NTRS), NANOCRYSTALS, QUANTUM DOTS, NANOFABRICATION, COPPER SULFIDES,...
376
376
Jul 21, 2010
07/10
by
Schmidt, T. M
texts
eye 376
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Reggiatoa and Thiothrix are genera of filamentous, colorless, sulfide oxidizing bacteria. These organisms are microaerophilic, oxidizing sulfide to sulfur in the presence of oxygen. The sulfur accumulates in intracellular sulfur globules - the outstanding morphological feature of these bacteria. Some strains are able to further oxidize the sulfur to sulfate aerobically or reduce the sulfur to sulfide anaerobically. This metabolic versatility makes these bacteria important links in aquatic...
Topics: MARINE ENVIRONMENTS, SEDIMENTS, SULFIDES, AQUEOUS SOLUTIONS, PH, REACTION KINETICS
The feasibility of a reactively sputtered thin film CdS - Cu2S solar cell is proven. Identification of the reactively sputtered Cu2S film is made by X-ray diffractometer and spectro-transmission measurements. Because of its simplicity, economical use of material, and high yield, the reactive sputtering process promises to be a low cost method for producing CdS - Cu2S solar cells.
Topics: NASA Technical Reports Server (NTRS), SOLAR CELLS, SPUTTERING, THIN FILMS, CADMIUM SULFIDES, COPPER...
A method for purification of KC1 by anion and cation exchange was developed. The crystalline product of the purification process and single crystals grown from this product were evaluated. This investigation shows that the method produces crystals superior to those currently available commercially. Optical data indicate the OH(-), Br(-), and I(-) concentration was reduced. Emission spectroscopy indicates the Na() con tent was significantly reduced. Electrical conductivity measurements indicate...
Topics: DTIC Archive, Fredericks, W J, STANFORD RESEARCH INST MENLO PARK CA, *CRYSTAL GROWTH, SYMPOSIA,...
The sulfate reducing bacteria, the first nonphotosynthetic anaerobic bacteria demonstrated to contain c type cytochromes, perform electron transfer coupled to phosphorylation. A new bioenergetic scheme for the formation of a proton gradient for growth of Desulfovibrio on organic substrates and sulfate involving vectors electron transfer and consistent with the cellular localization of enzymes and electron transfer components was proposed. Hydrogen is produced in the cytoplasm from organic...
Topics: NASA Technical Reports Server (NTRS), ELECTRON TRANSFER, GROWTH, HYDROGEN, OXIDATION, PROTONS,...
Abstract
Topics: DTIC Archive, Le Bihan, M T, LIBRARY OF CONGRESS WASHINGTON DC AEROSPACE TECHNOLOGY DIV, *ARSENIC...
Samples were prepared by melting the metals, followed by annealing to various temperatures. The result was a structurally weak material. Sputtered films on sapphire substrates were prepared and studied. The substrates give the films mechanical strength and permit easy attachment of electrical leads. Materials were characterized by X-ray diffraction, electron microscopy, electrical resistance vs. temperature, and critical current measurements. Some of the results on CuMo6S8 are presented.
Topics: NASA Technical Reports Server (NTRS), COPPER SULFIDES, MOLYBDENUM SULFIDES, SPUTTERING,...
General problems relating to the basic understanding of CdS/Cu2S solar cell operation, to material aspects of the cell and to manufacturing methods and cell engineering are discussed.
Topics: NASA Technical Reports Server (NTRS), CADMIUM SULFIDES, COPPER SULFIDES, ENERGY CONVERSION...
275
275
Jul 21, 2010
07/10
by
Yopp, J. H
texts
eye 275
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Organosulfur compounds are involved in osmoregulation and salinity tolerance in some cyanobacteria and photosynthetic eukaryotes. Glycinebetaine, the osmolyte of the halotolerant cyanobacterium, Aphanothece halophytica, requires the sulfonium compound. S-adenosyl-methionine (SAM) for its synthesis. Glutamate is the nitrogen source, SAM is the methyl carbon and serine the carbon backbone source of this unique osmolyte. Inhibitor studies suggest that photorespiration interacts with sulfur...
Topics: DEPOSITION, GEOCHEMISTRY, GEOLOGY, SULFATES, SULFIDES, CARBON CYCLE, OCEANS, ROCKS, SEDIMENTS
The development of very low cost long lived Cu2S/CdS thin film solar cells for large scale energy conversion is reported. Excellent evaporated metal grid patterns were obtained using a specially designed aperture mask. Vacuum evaporated gold and copper grids of 50 lines per inch and 1 micron thickness were adequate electrically for the fine mesh contacting grid. Real time roof top sunlight exposure tests of encapsulated CdS cells showed no loss in output after 5 months. Accelerated life testing...
Topics: NASA Technical Reports Server (NTRS), CADMIUM SULFIDES, COPPER SULFIDES, SOLAR CELLS, THIN FILMS,...
U.S. Forest Service Eastern Region
120
120
Feb 5, 2014
02/14
by
Deitschman, Glenn H; Neckers, J. W; Central States Forest Experiment Station (Columbus, Ohio)
texts
eye 120
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"November 1953."
Topics: Sulfides, Coal mines and mining, Strip mining, Plant-soil relationships
163
163
Jun 2, 2011
06/11
by
Wentz, Frank J
texts
eye 163
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During the three years of finding, we have carefully corrected for two sensor/platform problems, developed a physically based retrieval algorithm to calculate SST, wind speed, water vapor, cloud liquid water and rain rates, validated these variables, and demonstrated that satellite microwave radiometers can provide very accurate SST retrievals through clouds. Prior to this, there was doubt by some scientists that the technique of microwave SST retrieval from satellites is a viable option. We...
Topics: PYROLYSIS, POWDER (PARTICLES), SCANNING ELECTRON MICROSCOPY, SYNTHESIS (CHEMISTRY), NANOCRYSTALS,...
Heavily doped n-type single crystals of GaN were grown epitaxially by the vapor phase reaction of GaCl and NH3 on Sapphire substrates. GaN is a direct gap semiconductor with a bandgap of 3.25eV. It fluoresces efficiently in the visible as well as the UV. Single crystals of AlP were prepared by the disproportionation of gaseous AlI in the presence of PH3 either as freely nucleated whiskers or epitaxially on GaAs or Si substrates. Attempts to determine the mechanisms of the efficient Cu green...
Topics: DTIC Archive, Gershenzon, M, UNIVERSITY OF SOUTHERN CALIFORNIA LOS ANGELES ELECTRONIC SCIENCES LAB,...
1 folded sheet (4 pages) ; 22 cm
Topics: Otitis Externa -- drug therapy, Calcium Compounds -- therapeutic use, Sulfides -- therapeutic use
179
179
Sep 6, 2012
09/12
by
Pomroy, William H
texts
eye 179
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Includes bibliographical references
Topics: Mine fires, Combustion, Spontaneous, Fire detectors, Metal sulfides, Mines and mineral resources
442
442
Jul 21, 2010
07/10
by
Keith, T. G., Jr.; Afjeh, A. A.; Jeng, D. R.; White, J. A
texts
eye 442
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A description of a computer program entitled VORTEX that may be used to determine the aerodynamic performance of horizontal axis wind turbines is given. The computer code implements a vortex method from finite span wind theory and determines the induced velocity at the rotor disk by integrating the Biot-Savart law. It is assumed that the trailing helical vortex filaments form a wake of constant diameter (the rigid wake assumption) and travel downstream at the free stream velocity. The program...
Topics: BACTERIA, PHOTOSYNTHESIS, SALINITY, CAROTENE, MORPHOLOGY, PHOTOTROPISM, SULFIDES, CHARACTERIZATION,...
211
211
May 23, 2011
05/11
by
Lingle, Craig S.; Brenner, Anita C.; Zwally, H. Jay; DiMarzio, John P
texts
eye 211
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Mean changes in the surface elevation near the west margin of the Greenland ice sheet are measured using Seasat altimetry and altimetry from the Geosat Exact Repeat Mission (ERM). The Seasat data extend from early July through early October 1978. The ERM data extend from winter 1986-87 through fall 1988. Both seasonal and multi-year changes are measured using altimetry referenced to GEM T2 orbits. The possible effects of orbit error are minimized by adjusting the orbits into a common ocean...
Topics: ABSORPTION SPECTRA, CARBONYL COMPOUNDS, METHYL ALCOHOL, PROTOSTARS, MIE SCATTERING, SULFIDES,...
The optical and electronic properties of single crystal Cu2S-CdS photovoltaic cells were investigated. In these cells trapped charge near the interface which is manifested by a persistent increase in junction capacitance (the photocapacitance) plays a significant role in determining the carrier transport properties. It was found that the severe degradation in short-circuit current observed in heat-treated cells can be separated into two components: (1) a relatively small thermal component...
Topics: NASA Technical Reports Server (NTRS), CADMIUM SULFIDES, COPPER SULFIDES, ELECTRICAL PROPERTIES,...
304
304
Jul 21, 2010
07/10
by
Peterson, D. L
texts
eye 304
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Research is underway at the NASA Ames Research Center that is concerned with aspects of the nitrogen cycle in terrestrial ecosystems. An interdisciplinary research group is attempting to correlate nitrogen transformations, processes, and productivity with variables that can be remotely sensed. Recent NASA and other publications concerning biogeochemical cycling at global scales identify attributes of vegetation that could be related or explain the spatial variation in biologically functional...
Topics: CARBON DIOXIDE, GEOLOGY, MATHEMATICAL MODELS, RESERVOIRS, SULFUR, CARBON CYCLE, OXYGEN, SEDIMENTS,...
Photovoltaic cells may be used to convert sunlight directly into electrical energy and into low-grade heat to be used for large scale terrestrial solar energy conversion. Both forms of energy can be utilized if such cells are deployed in close proximity to the consumer (rooftop). CdS/Cu2S solar cells are an example of cells which may be produced inexpensively enough to become economically attractive. Cell parameters relevant for combined solar conversion are presented. Critical issues, such as...
Topics: DTIC Archive, Boer,Karl W, DELAWARE UNIV NEWARK INST OF ENERGY CONVERSION, *SOLAR CELLS, *SOLAR...
A chemical spray process for the production of thin film CdS-Cu2S solar cells is discussed that is projected to cost less than $60/kW in very large scale production. The average efficiency of these cells has been improved from less than 0.3% in 1971 about 4.5% at present. Further developments for the process are considered to raise the efficiency, and to attain long life stability.
Topics: NASA Technical Reports Server (NTRS), SEMICONDUCTING FILMS, SOLAR CELLS, SPRAYED COATINGS, THIN...
Parallel to the experimental investigations, theoretical studies have been developed and the dispersion relations calculated for some of the II-VI semiconductors compounds. The presence of foreign atoms leads to localized or resonants modes of vibration, which have been experimentally studied in many II- VI semiconductors compounds.
Topics: DTIC Archive, Balkanski, M, PARIS-6 UNIV (FRANCE) LAB DE PHYSIQUE DES SOLIDES, *INFRARED...
Polycrystalline CuInS2 films were deposited by aerosol-assisted chemical vapor deposition using both solid and liquid ternary single-source precursors (SSPs) which were prepared in-house. Films with either (112) or (204/220) preferred orientation, had a chalcopyrite structure, and (112)-oriented films contained more copper than (204/220)-oriented films. The preferred orientation of the film is likely related to the decomposition and reaction kinetics associated with the molecular structure of...
Topics: NASA Technical Reports Server (NTRS), METAL FILMS, POLYCRYSTALS, VAPOR DEPOSITION, COPPER SULFIDES,...
194
194
Jul 21, 2010
07/10
by
NON
texts
eye 194
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A synthetic aperture radar (SAR) employed for delta k measurement of ocean current from a spacecraft without the need for a narrow beam and long observation times. The SAR signal is compressed to provide image data for different sections of the chirp band width, equivalent to frequencies and a common area for the separate image fields is selected. The image for the selected area at each frequency is deconvolved to obtain the image signals for the different frequencies and the same area. A...
Topics: COLONIES, SEDIMENTS, SOILS, CULTURE TECHNIQUES, GROWTH, MICROORGANISMS, MINERALS, SULFIDES, CELLS...
214
214
May 23, 2011
05/11
by
Leighly, Karen; Kunieda, Hideyo; Awaki, Hisamitsu; Tsuruta, Sachik
texts
eye 214
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We present analyses of two Ginga observations and two observations from the ROSAT database of NGC 7469, focusing on the spectral variability observed on timescales of days and longer. During the 1988 Ginga observation, the hardness ratio (8-21 keV/3.4-5.7 keV) increased significantly as the total flux decreased by 30%. As the spectrum is well fit by the reflection model and since the spectra variability dominates the higher energy band, this could be explained by either a variation in the power...
Topics: DIMETHYL COMPOUNDS, RADICALS, DMSP SATELLITES, GRAZING, SULFIDES, BACTERIA, ENZYME ACTIVITY,...
viii, 147 leaves, [5] leaves of plates : 29 cm
Topics: Sulfides -- Ontario -- Timmins, Sulfide minerals -- Ontario -- Timmins, Mineralogy -- Ontario --...
145
145
May 31, 2011
05/11
by
NON
texts
eye 145
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COPAMS, Commonwealth of Pennsylvania Air Monitoring System, derives from technology involved in building unmanned spacecraft. The Nimbus spacecraft carried experimental sensors to measure temperature, pressure, ozone, and water vapor, and instruments for studying solar radiation and telemetry. The process which relayed these findings to Earth formed the basis for COPAMS. The COPAMS system consists of data acquisition units which measure and record pollution level, and sense wind speed and...
Topics: ATMOSPHERIC PRESSURE, ANNEALING, SCHOTTKY DIODES, EVAPORATION, SCANNING ELECTRON MICROSCOPY, GLASS,...
The most significant results of the Delaware team are summarized. The CdS/Cu2S band model is further developed, and the space charge region in CdS is analyzed. Field enhanced recombination seems to limit the field near the interface. This and possibly other field effects force continuity of both quasi-Fermi levels through the interface. The Cu2S predominantly determines the current; the CdS seems to determine the open circuit voltage behavior of the cell. (Author)
Topics: DTIC Archive, Boeer,K W, DELAWARE UNIV NEWARK INST OF ENERGY CONVERSION, *HETEROJUNCTIONS, *SOLAR...
