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Note: This page contains sample records for the topic "zinc oxide upper" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
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1

Precursors of copper/zinc oxide catalysts  

Science Journals Connector (OSTI)

Recent results on hydroxycarbonate precursors of copper/zinc oxide catalysts for methanol synthesis are reinterpreted, taking into account earlier work on these systems.

M.S. Spencer

2

Process for preparing zinc oxide-based sorbents  

DOE Patents [OSTI]

The disclosure relates to zinc oxide-based sorbents, and processes for preparing and using them. The sorbents are preferably used to remove one or more reduced sulfur species from gas streams. The sorbents comprise an active zinc component, optionally in combination with one or more promoter components and/or one or more substantially inert components. The active zinc component is a two phase material, consisting essentially of a zinc oxide (ZnO) phase and a zinc aluminate (ZnAl.sub.2O.sub.4) phase. Each of the two phases is characterized by a relatively small crystallite size of typically less than about 500 Angstroms. Preferably the sorbents are prepared by converting a precursor mixture, comprising a precipitated zinc oxide precursor and a precipitated aluminum oxide precursor, to the two-phase, active zinc oxide containing component.

Gangwal, Santosh Kumar (Cary, NC); Turk, Brian Scott (Durham, NC); Gupta, Raghubir Prasad (Durham, NC)

2011-06-07T23:59:59.000Z

3

Recent developments in zinc oxide target chemistry  

SciTech Connect (OSTI)

Zinc oxide targets irradiated with high energy protons at the Los Alamos Meson Physics Facility (LAMPF) contain a number of radioactive spallation products in quantities large enough to warrant recovery. This paper describes methods for recovering {sup 7}Be, {sup 46}Sc, and {sup 48}V from such targets and offers suggestions on possible ways to recover additional isotopes. The proposed methods are based on traditional precipitation and ion exchange techniques, are readily adaptable to hot cell use, and produce no hazardous waste components. The products are obtained in moderate to high yields and have excellent radiopurity.

Heaton, R.C.; Taylor, W.A.; Phillips, D.R.; Jamriska, D.J. Sr.; Garcia, J.B.

1994-04-01T23:59:59.000Z

4

Zinc oxide thin film acoustic sensor  

SciTech Connect (OSTI)

This paper reports the implementation of (750 nm) thickness of Zinc Oxide (ZnO) thin film for the piezoelectric pressure sensors. The film was prepared and deposited employing the spray pyrolysis technique. XRD results show that the growth preferred orientation is the (002) plane. A polycrystalline thin film (close to mono crystallite like) was obtained. Depending on the Scanning Electron Microscopy photogram, the film homogeneity and thickness were shown. The resonance frequency measured (about 19 kHz) and the damping coefficient was calculated and its value was found to be about (2.5538), the thin film be haves as homogeneous for under and over damped. The thin film pressure sensing was approximately exponentially related with frequency, the thin film was observed to has a good response for mechanical stresses also it is a good material for the piezoelectric properties.

Mohammed, Ali Jasim; Salih, Wafaa Mahdi; Hassan, Marwa Abdul Muhsien; Nusseif, Asmaa Deiaa; Kadhum, Haider Abdullah [Department of Physics , College of Science, Al-Mustansiriyah University, Baghdad (Iraq); Mansour, Hazim Louis [Department of Physics , College of Education, Al-Mustansiriyah University, Baghdad (Iraq)

2013-12-16T23:59:59.000Z

5

Synthesis and Characterization of Zinc Oxide Nanoparticles for Ethanol Detection  

Science Journals Connector (OSTI)

Pure phase, zinc oxide (ZnO) nanoparticles were synthesized at lower temperature by microwave assisted auto combustion synthesis method. As-synthesized particles had sizes ~50 nm with spherical shape. Gas respons...

Sachin Tyagi; Sarita Devi; Ashok K. Paul

2014-01-01T23:59:59.000Z

6

Nano zinc oxide for UV protection of textiles  

Science Journals Connector (OSTI)

This paper describes the effect on the fading of dyed polyester fabrics in artificial sunlight, when the Ultra Violet (UV) component of the radiation was blocked by coating the fabric with zinc oxide nanoparticles, dispersed in an acrylic polymer. Zinc oxide is photoactive and generates superoxide and hydroxyl radicals (Reactive Oxygen Species; ROS) when irradiated with UV in the presence of oxygen and water. The results for the four dyes studied show that different dye chromophores interact differently with ROS. Selection of dyes with anti oxidant properties or addition of other anti oxidants may reduce the adverse effects of ROS.

Lu Sun; John A. Rippon; Peter G. Cookson; Xungai Wang; Ken King; Olga Koulaeva; Reno Beltrame

2008-01-01T23:59:59.000Z

7

Zinc sorption by iron oxides and soil samples  

E-Print Network [OSTI]

(Head of Department) May 1989 ABSTRACT Zinc Sorption by Iron Oxides and Soil Samples. (May 1989) Markku Juhani Yli-Halla, M. S. University of Helsinki, Finland Chair of Advisory Committee: Dr. Richard H. Loeppert Zn sorption by synthetic Fe oxide... and soil samples was studied. The purpose was to examine the effect of crystallinity and adsorbed silica on Zn adsorption by synthetic Fe oxide using goethite and ferrihydrite as test materials. Zn sorption by acid soil samples from Finland and a...

Yli-Halla, Markku Juhani

1989-01-01T23:59:59.000Z

8

Amorphous hafnium-indium-zinc oxide semiconductor thin film transistors  

Science Journals Connector (OSTI)

We reported on the performance and electrical properties of co-sputtering-processed amorphous hafnium-indium-zinc oxide (?-HfIZO) thin film transistors (TFTs). Co-sputtering-processed ?-HfIZO thin films have shown an amorphous phase in nature. ...

Sheng-Po Chang; San-Syong Shih

2012-01-01T23:59:59.000Z

9

Nanocomposite electrical generator based on piezoelectric zinc oxide nanowires  

E-Print Network [OSTI]

Nanocomposite electrical generator based on piezoelectric zinc oxide nanowires K. Momeni, G. M October 2010; published online 1 December 2010 A nanocomposite electrical generator composed of an array system and loading configuration can generate up to 160% more electric potential than the values reported

Endres. William J.

10

Combinatorial study of zinc tin oxide thin-film transistors  

SciTech Connect (OSTI)

Groups of thin-film transistors using a zinc tin oxide semiconductor layer have been fabricated via a combinatorial rf sputtering technique. The ZnO:SnO{sub 2} ratio of the film varies as a function of position on the sample, from pure ZnO to SnO{sub 2}, allowing for a study of zinc tin oxide transistor performance as a function of channel stoichiometry. The devices were found to have mobilities ranging from 2 to 12 cm{sup 2}/V s, with two peaks in mobility in devices at ZnO fractions of 0.80{+-}0.03 and 0.25{+-}0.05, and on/off ratios as high as 10{sup 7}. Transistors composed predominantly of SnO{sub 2} were found to exhibit light sensitivity which affected both the on/off ratios and threshold voltages of these devices.

McDowell, M. G.; Sanderson, R. J.; Hill, I. G. [Dalhousie University, Department of Physics, Halifax, Nova Scotia B3H 3J5 (Canada)

2008-01-07T23:59:59.000Z

11

Zinc-oxide-based sorbents and processes for preparing and using same  

DOE Patents [OSTI]

Zinc oxide-based sorbents, and processes for preparing and using them are provided. The sorbents are preferably used to remove one or more reduced sulfur species from gas streams. The sorbents comprise an active zinc component, optionally in combination with one or more promoter components and/or one or more substantially inert components. The active zinc component is a two phase material, consisting essentially of a zinc oxide (ZnO) phase and a zinc aluminate (ZnAl.sub.2O.sub.4) phase. Each of the two phases is characterized by a relatively small crystallite size of typically less than about 500 Angstroms. Preferably the sorbents are prepared by converting a precursor mixture, comprising a precipitated zinc oxide precursor and a precipitated aluminum oxide precursor, to the two-phase, active zinc oxide containing component.

Gangwal, Santosh Kumar (Cary, NC); Turk, Brian Scott (Durham, NC); Gupta, Raghubir Prasael (Durham, NC)

2010-03-23T23:59:59.000Z

12

Zinc oxide nanoparticle-polymeric thin films for dynamic strain sensing  

E-Print Network [OSTI]

010-4940-3 Zinc oxide nanoparticle-polymeric thin ?lms forcharacterized by a unique nanoparticle weight fraction; theinvestigate the effects of nanoparticle weight fractions on

Loh, Kenneth J.; Chang, Donghee

2011-01-01T23:59:59.000Z

13

The insert of zinc oxide thin film in indium tin oxide anode for organic electroluminescence devices q  

E-Print Network [OSTI]

structure including a trans- parent anode, an organic active layer, and a metallic cathode. It has recently zinc oxide films have been actively investigated as alternate materials to ITO because zinc oxide consisted of Al as a cathode, Al2O3 as an electro transport layer, Alq3 as a luminously layer, TPD as a hole

Boo, Jin-Hyo

14

Zinc oxide nanoparticles as novel alpha-amylase inhibitors  

Science Journals Connector (OSTI)

Amylase inhibitors also known as starch blockers contain substances that prevent dietary starches from being absorbed by the body via inhibiting breakdown of complex sugars to simpler ones. In this sense these materials are projected as having potential applications in diabetes control. In this context we report on zinc oxide nanoparticles as possible alpha-amylase inhibitors. Zinc oxide nanoparticles have been synthesized using soft-chemistry approach and 1-thioglycerol was used as a surfactant to yield polycrystalline nanoparticles of size ? 18 ? nm stabilized in wurtzite structure. Conjugation study and structural characterization have been done using x-ray diffraction technique Fourier transform infrared spectroscopy UV-visible spectroscopy and transmission electron microscopy. Cytotoxicity studies on human fibrosarcoma (HT-1080) and skin carcinoma (A-431) cell lines as well as mouse primary fibroblast cells demonstrate that up to a dose of 20 ? ? g / ml ZnOnanoparticles are nontoxic to the cells. We report for the first time the alpha-amylase inhibitory activity of ZnOnanoparticles wherein an optimum dose of 20 ? ? g / ml was sufficient to exhibit 49% glucose inhibition at neutral p H and 35 ? ° C temperature. This inhibitory activity was similar to that obtained with acarbose (a standard alpha-amylase inhibitor) thereby projecting ZnOnanoparticles as novel alpha-amylase inhibitors.

Sandip Dhobale; Trupti Thite; S. L. Laware; C. V. Rode; Soumya J. Koppikar; Ruchika-Kaul Ghanekar; S. N. Kale

2008-01-01T23:59:59.000Z

15

Precursors of the copper-zinc oxide methanol synthesis catalysts  

Science Journals Connector (OSTI)

The coprecipitated hydroxycarbonate precursor of the methanol synthesis and shift reaction catalyst based on 30 at.% copper and 70 at.% zinc oxide, which was previously reported to be a mixture of hydrozincite Zn5(CO3)2(OH)6 and rosasite (Cu,Zn)2(CO3)(OH)2 (R. G. Herman, K. Klier, G. W. Simmons, B. P. Finn, J. B. Bulko, and T. P. Kobylinski, J. Catal. 56, 407, 1979) or a single-phase hydrozincite (G. Petrini, F. Montino, A. Bossi, and G. Gaybassi, in “Studies in Surface Science and Catalysis. Preparation of Catalysis III” (G. Poncelet, P. Grange, and P. A. Jacobs, Eds.), Vol. 16, p. 735. Elsevier, The Netherlands, 1983), is herein shown to be a single-phase aurichalcite (Cu0.3Zn0.7)5(CO3)2(OH)6. The orthorhombic B2212 aurichalcite is crystallograpically distinct from the monoclinic \\{C2m\\} hydrozincite, although these two compounds have the same ratio of metal ions to carbonate and hydroxyl anions. Both aurichalcite and hydrozincite are chemically and structurally distinct from the monoclinic \\{P21a\\} rosasite. The earlier erroneous assignments are attributed to the structural similarity of the three hydroxycarbonates in question. An energy-dispersive characteristic X-ray emission analysis of individual particles in the scanning transmission electron microscope reveals a uniform distribution of copper and zinc at the analytical concentration CuZn = 3070. Precursors with less than 30% copper consist of mixtures of aurichalcite and hydrozincite.

P.B. Himelfarb; G.W. Simmons; K. Klier; R.G. Herman

1985-01-01T23:59:59.000Z

16

Effect of morphology and solvent on two-photon absorption of nano zinc oxide  

SciTech Connect (OSTI)

Highlights: ? ZnO nanospheres and triangular structures synthesis by novel precipitation technique. ? The effect of precursor concentration on the size and shape of nano ZnO. ? Open aperture Z-scan measurements of the ZnO nanoparticle dispersions. ? Nanospheres exhibit higher two photon absorption coefficient than triangular nanostructures. ? Nanospheres dispersed in water exhibit higher two photon absorption coefficient than its dispersion in 2-propanol. - Abstract: In this paper, we report the effect of morphology and solvent on the two-photon absorption of nano zinc oxide. Zinc oxide nanoparticles in two different morphologies like nanospheres and triangular nanostructures are synthesized by novel precipitation technique and their two-photon absorption coefficient is measured using open aperture Z-scan technique. Experimental results show that the zinc oxide nanospheres exhibit higher two-photon absorption coefficient than the zinc oxide triangular nanostructures. The zinc oxide nanospheres dispersed in water exhibit higher two-photon absorption coefficient than that of its dispersion in 2-propanol. The zinc oxide nanospheres dispersed in water shows a decrease in two-photon absorption coefficient with an increase in on-axis irradiance. The result confirms the dependence of shape and solvent on the two-photon absorption of nano zinc oxide.

Kavitha, M.K. [Department of Chemistry, Indian Institute of Space Science and Technology, Valiamala, Thiruvananthapuram 695547, Kerala (India); Haripadmam, P.C.; Gopinath, Pramod; Krishnan, Bindu [Department of Physics, Indian Institute of Space Science and Technology, Valiamala, Thiruvananthapuram 695547, Kerala (India); John, Honey, E-mail: honey@iist.ac.in [Department of Chemistry, Indian Institute of Space Science and Technology, Valiamala, Thiruvananthapuram 695547, Kerala (India)

2013-05-15T23:59:59.000Z

17

E-Print Network 3.0 - aluminum-doped zinc oxide Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

for the first time at 800 Torr... reserved. Keywords: Transparent-conducting oxide (TCO); AlZnO; PECVD 1. Introduction Aluminum-doped zinc... PECVD for the deposition of ......

18

Ordered Nucleation Sites for the Growth of Zinc Oxide Nanofibers  

SciTech Connect (OSTI)

Organic photovoltaics (OPVs) offer a promising route to low cost photovoltaic (PV) technology that can be inexpensively manufactured on a large scale for use in power generation and commercial products. Solar power conversion efficiencies of laboratory scale OPV devices have recently reached ~5%; however, projected efficiencies of at least 10% will be required for commercialization. An analogous approach that has arisen recently that can potentially increase efficiencies employs metal oxide semiconductors as the electron acceptor, creating a hybrid organic-inorganic device. This approach offers the advantage that the conduction band of the oxide can be tuned in a systematic way through doping, thus potentially achieving higher photovoltages in the device. Additionally, nanostructures of these materials can be easily grown from precursor solutions, providing a technique to precisely control the nanoscale geometry. This work focuses on using ZnO, which is known to have high electron mobility (>100 cm2/Vs), as the electron acceptor. Nanofibers of ZnO can be grown from precursors such as zinc acetate or zinc nitrate to form arrays of nanofibers into which a conjugated polymer can be intercalated to form a composite PV device. The morphology of the nanofiber array is critical to the performance of the device, but current methods of nanofiber growth from a flat, polycrystalline nucleation layer allow for little morphological control. To overcome this limitation, we have created ordered arrays of ZnO nucleation sites with controllable size and spacing. Toluene solutions of diblock copolymer micelles with ZnCl2 incorporated into the micellar cores were spin-coated onto glass substrates and etched with an O2 plasma to yield hexagonally ordered arrays of ZnO nanoparticles that functioned as nucleation sites. Changing the concentration of ZnCl2 and the molecular weight and ratio of the diblock copolymer resulted in systematic variation in the size and spacing of the nucleation sites. Thermal anneal treatment provided further modification of the nucleation layer, from which ZnO nanofibers were successfully grown from solution, although at present it is not known if the geometry of the as-grown ZnO nanofibers precisely reflects that of the underlying nucleation layer. This work provides a simple and useful method for potentially controlling the nucleation of ZnO nanofibers to be used in hybrid ZnO/organic nanocomposite PV devices.

Wang, J.; Ginley, D.S.; Shaheen, S.

2006-01-01T23:59:59.000Z

19

Mixed sulphide–oxide lead and zinc ores: Problems and solutions  

Science Journals Connector (OSTI)

Mixed sulphide–oxide lead and zinc ores are most often found in the transition, and occasionally in the oxidised, zones of lead–zinc ore-bodies. They are of great importance because there are numerous unexploited or abandoned reserves of these ores in the world. However they present difficulties for conventional mineral processing due to complex mineralogy. In this paper, the specific problems associated with these types of ores are described and methods for solving these problems, combining economic and technical considerations, are discussed. The results of experiments carried out at laboratory scale are presented, in which the dissolution of mixed ore in sulphuric acid without oxidising agents was investigated. The results show the feasibility of zinc recovery from mixed sulphide–oxide lead and zinc ores, which underlines the potential of this approach. We also propose a conceptual flow diagram for the hydrometallurgical processing of these ores.

S. Moradi; A.J. Monhemius

2011-01-01T23:59:59.000Z

20

Optoelectronics Devices Based on Zinc Oxide Thin Films and Nanostructures  

E-Print Network [OSTI]

is promising for UV optoelectronics, such as photodetectors,for future ZnO optoelectronics. References Ü. Özgür, Ya. I.OF THE DISSERTATION Optoelectronics Devices Based on Zinc

Chu, Sheng

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "zinc oxide upper" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

Co-sputtered Aluminum Doped Zinc Oxide Thin Film as Transparent Anode for Organic Light-emitting Diodes  

E-Print Network [OSTI]

Co-sputtered Aluminum Doped Zinc Oxide Thin Film as Transparent Anode for Organic Light and Technology, Clear Water Bay, Kowloon, Hong Kong, China ABSTRACT Aluminum doped zinc oxide (AZO that MTDATA matches better with AZO than CuPc, which served as hole injection layer. Keywords: Aluminum doped

22

Zinc-catalyzed copolymerization of carbon dioxide and propylene oxide  

E-Print Network [OSTI]

dioxide has recently been paid attention in the field of extraction, separation, and reaction medium, its aptitude for both a reaction solvent and a reactant was examined in zinc glutarate-catalyzed reactions. As a result, it was proved that supercritical...

Katsurao, Takumi

1994-01-01T23:59:59.000Z

23

Investigation of zinc oxide doped with metal impurities for use as thin film conductive phosphors  

E-Print Network [OSTI]

of a viable flat panel display, low voltage, conductive phosphors which emit blue, red, and green light will be required for the field emission technology. This thesis examines zinc oxide (ZnO) based thin ( ) phosphors for such an application. ZnO is a...

Evatt, Steven R.

1994-01-01T23:59:59.000Z

24

Processing and Characterization of P-Type Doped Zinc Oxide Thin Films  

E-Print Network [OSTI]

Applications of zinc oxide (ZnO) for optoelectronic devices, including light emitting diodes, semiconductor lasers, and solar cells have not yet been realized due to the lack of high-quality p-type ZnO. In the research presented herein, pulsed laser...

Myers, Michelle Anne

2013-03-18T23:59:59.000Z

25

STRAIN SENSING WITH PIEZOELECTRIC ZINC OXIDE THIN FILMS FOR VIBRATION SUPPRESSION IN HARD DISK DRIVES  

E-Print Network [OSTI]

was successfully obtained while the suspension was flying on a disk as in normal drive operation. PreliminarySTRAIN SENSING WITH PIEZOELECTRIC ZINC OXIDE THIN FILMS FOR VIBRATION SUPPRESSION IN HARD DISK This paper describes the integration of thin film ZnO strain sensors onto hard disk drive suspensions

Horowitz, Roberto

26

Solarthermal and Solar Quasi-Electrolytic Processing and Separations:? Zinc from Zinc Oxide as an Example  

Science Journals Connector (OSTI)

8 Carbonaceous material has been steam reformed in a solar furnace in an endothermic process9 which stores solar energy as an enhanced heating value of the products, hydrogen and/or synthesis gas, without having to burn any of the feedstocks to provide the energy needed to reform them, and methane has been reformed with carbon dioxide by Levy et al.10 to produce synthesis gas and store solar energy in a study aimed at developing a technique for transporting solar heat from the Negev to industrial regions. ... Inasmuch as CO and CO2 are gases, as long as only solid ZnO and C are initially present in a closed container, the solids can react to produce zinc and the appropriate equilibrium mixture of CO, CO2, and zinc vapor in contact with the solid reactants until the sum of the partial pressures of the gaseous components reaches the temperature-dependent unique “saturation pressure” of a ZnO?C mixture. ... A rapid quench would not be needed, though one might choose to cool the product gas quickly by expanding it through a nozzle or turbine rather than in a heat exchanger, to make economic use of its sensible enthalpy. ...

Edward A. Fletcher

1999-04-30T23:59:59.000Z

27

Cadmium Zinc Oxide Based Optoelectronics Materials and Devices  

E-Print Network [OSTI]

201907. [45] 2010 Optoelectronics Market Report. Databeans,candidate of wide bandgap optoelectronics applications, ZnOZinc Oxide Based Optoelectronics Materials and Devices A

Li, Lin

2011-01-01T23:59:59.000Z

28

Improved Stability Of Amorphous Zinc Tin Oxide Thin Film Transistors...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Instruments: Ultra-high Vacuum, Low-temperature Scanning Probe Microscope Instrument, or UHV LT SPM Tags: oxides ultra-high vacuum UHV VT SPM atomic-resolution imaging structural...

29

Oxidation of zinc in alkaline solutions studied by electrochemical impedance spectroscopy  

SciTech Connect (OSTI)

Electrochemical dissolution and passivation reactions of zinc have been studied in 1.0 M KOH solutions by electrochemical impedance spectroscopy. Equivalent circuits have been worked out by simulating the impedance data and using the results to model the dissolution and passivation reactions. A Tafel plot constructed from the charge-transfer resistances provides an exchange current of 0.11 A/cm{sup 2} and an {alpha} value of 0.36 for zinc oxidation. The maximum rate of zinc oxidation is observed at about {minus}1.30 V vs. the Hg/HgO reference electrode as judged from the charge-transfer resistance minimum obtained from impedance measurements. A negative polarization resistance with a reverse semicircle on the Nyquist plot illustrates the transition process from an active to passive potential region at {minus}1.10 V. At high anodic over-potentials, the zinc electrode behaved as a semiconductor electrode due to a compact ZnO passive film formed on the electrode surface.

Cai, M.; Park, S.M. [Univ. of New Mexico, Albuquerque, NM (United States). Dept. of Chemistry

1996-12-01T23:59:59.000Z

30

Power dissipation characteristics of zinc-oxide arresters for HVDC systems  

SciTech Connect (OSTI)

Zinc-oxide arresters without series gaps have been used for HVDC systems. The voltage wave shapes applied to HVDC arresters are not a simple sinusoidal shape, so that the leakage current contains high frequency components. The power dissipation characteristics of a thyristor valve arrester were measured using a 1/25 prorated arrester section with a 5kV/500kW thyristor bridge. High frequency power dissipation characteristics of zinc-oxide elements were measured and it was shown that the high frequency power dissipation of the thyristor valve arrester was larger than that of an AC system arrester. Consideration of the equivalent continuous operating voltage for the performance test of an HVDC arrester are presented.

Horiuchi, S.; Ichikawa, F. (Tokyo Electric Power Co., Inc., Tokyo (JP)); Mizukoshi, A. (Hitachi Research Lab., Hitachi Ltd. (JP)); Kurita, K.; Shirakawa, S. (Kokubu Works Hitachi Ltd., Ibaraki (JP))

1988-10-01T23:59:59.000Z

31

Inkjet printed ambipolar transistors and inverters based on carbon nanotube/zinc tin oxide heterostructures  

SciTech Connect (OSTI)

We report ambipolar field-effect transistors (FETs) consisting of inkjet printed semiconductor bilayer heterostructures utilizing semiconducting single-walled carbon nanotubes (SWCNTs) and amorphous zinc tin oxide (ZTO). The bilayer structure allows for electron transport to occur principally in the amorphous oxide layer and hole transport to occur exclusively in the SWCNT layer. This results in balanced electron and hole mobilities exceeding 2 cm{sup 2} V{sup ?1} s{sup ?1} at low operating voltages (<5?V) in air. We further show that the SWCNT-ZTO hybrid ambipolar FETs can be integrated into functional inverter circuits that display high peak gain (>10). This work provides a pathway for realizing solution processable, inkjet printable, large area electronic devices, and systems based on SWCNT-amorphous oxide heterostructures.

Kim, Bongjun; Jang, Seonpil; Dodabalapur, Ananth, E-mail: ananth.dodabalapur@engr.utexas.edu [Microelectronics Research Center, The University of Texas at Austin, Austin, Texas 78758 (United States); Department of Electrical and Computer Engineering, The University of Texas at Austin, Austin, Texas 78712 (United States); Geier, Michael L.; Prabhumirashi, Pradyumna L. [Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208 (United States); Hersam, Mark C. [Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208 (United States); Department of Chemistry, Northwestern University, Evanston, Illinois 60208 (United States); Department of Medicine, Northwestern University, Evanston, Illinois 60208 (United States)

2014-02-10T23:59:59.000Z

32

Polythiophene-based charge dissipation layer for electron beam lithography of zinc oxide and gallium nitride  

Science Journals Connector (OSTI)

The ability of thin polythiophene layers to dissipate accumulated charge in the electron beam lithography (EBL) of wide bandgap semiconductors such as zinc oxide and gallium nitride is demonstrated. A quick and inexpensive processing method is demonstrated for EBL exposure of dense and high-resolution patterns in a hydrogen silsesquioxane (HSQ) negative-tone resistdeposited on bulk ZnO samples and with GaN/AlN on sapphire substrates. For the former experimental results are given for three different cases: where no charge dissipation layer was used as well as cases where 40-nm-thick Al and 100-nm-thick conductive polymer layers were used on the top of the HSQ resist. For the latter material EBL exposure was investigated for pure HSQ and for HSQ with a thin conductive polymer layer on top. Based on the scanning electron microscope observations of the resulting photonic crystal(PhC) pattern conventional Al and the proposed polymer approach were compared. Good agreement between these results is reported while the new method considerably simplifies sample processing. Spin-coatable conducting polymer may be easily removed due to its solubility in water which makes it a perfect solution for the processing of amphoteric oxide samples i.e. zinc oxide. Gallium nitride processing also benefits from polymer dissipation layer usage due to extended exposure range and the avoidance of dense pattern overexposure in HSQ.

R. Dylewicz; S. Lis; R. M. De La Rue; F. Rahman

2010-01-01T23:59:59.000Z

33

Preparation of surface modified zinc oxide nanoparticle with high capacity dye removal ability  

SciTech Connect (OSTI)

Highlights: ? Amine-functionalized zinc oxide nanoparticle (AFZON) was synthesized. ? Isotherm and kinetics data followed Langmuir isotherm and pseudo-second order kinetic model, respectively. ? Q{sub 0} of ZON for AB25, DR23 and DR31 was 20, 12 and 15 mg/g, respectively. ? Q{sub 0} of AFZON for AB25, DR23 and DR31 was 1250, 1000 and 1429 mg/g, respectively. ? AFZON was regenerated at pH 12. -- Abstract: In this paper, the surface modification of zinc oxide nanoparticle (ZON) by amine functionalization was studied to prepare high capacity adsorbent. Dye removal ability of amine-functionalized zinc oxide nanoparticle (AFZON) and zinc oxide nanoparticle (ZON) was also investigated. The physical characteristics of AFZON were studied using Fourier transform infrared (FTIR), scanning electron microscopy (SEM) and X-ray diffraction (XRD). Acid Blue 25 (AB25), Direct Red 23 (DR23) and Direct Red 31 (DR31) were used as model compounds. The effect of operational parameters such as dye concentration, adsorbent dosage, pH and salt on dye removal was evaluated. The isotherm and kinetic of dye adsorption were studied. The maximum dye adsorption capacity (Q{sub 0}) was 20 mg/g AB25, 12 mg/g DR23 and 15 mg/g DR31 for ZON and 1250 mg/g AB25, 1000 mg/g DR23 and 1429 mg/g DR31 for AFZON. It was found that dye adsorption followed Langmuir isotherm. Adsorption kinetic of dyes was found to conform to pseudo-second order kinetics. Dye desorption tests (adsorbent regeneration) showed that the maximum dye release of 90% AB25, 86% for DR23 and 90% for DR31 were achieved in aqueous solution at pH 12. Based on the data of the present investigation, it can be concluded that the AFZON being an adsorbent with high dye adsorption capacity might be a suitable alternative to remove dyes from colored aqueous solutions.

Mahmoodi, Niyaz Mohammad, E-mail: nm_mahmoodi@yahoo.com [Department of Environmental Research, Institute for Color Science and Technology, Tehran (Iran, Islamic Republic of); Najafi, Farhood [Department of Resin and Additives, Institute for Color Science and Technology, Tehran (Iran, Islamic Republic of)] [Department of Resin and Additives, Institute for Color Science and Technology, Tehran (Iran, Islamic Republic of)

2012-07-15T23:59:59.000Z

34

Growth mechanism of atomic layer deposition of zinc oxide: A density functional theory approach  

SciTech Connect (OSTI)

Atomic layer deposition of zinc oxide (ZnO) using diethylzinc (DEZ) and water is studied using density functional theory. The reaction pathways between the precursors and ZnO surface sites are discussed. Both reactions proceed by the formation of intermediate complexes on the surface. The Gibbs free energy of the formation of these complexes is positive at temperatures above ?120?°C and ?200?°C for DEZ and water half-reactions, respectively. Spectroscopic ellipsometry results show that the growth per cycle changes at approximately the same temperatures.

Afshar, Amir; Cadien, Kenneth C., E-mail: kcadien@ualberta.ca [Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta T6G 2V4 (Canada)

2013-12-16T23:59:59.000Z

35

Structural and optical properties of zinc oxide film using RF-sputtering technique  

SciTech Connect (OSTI)

This paper reports the fabrication of zinc oxide (ZnO) film using RF-sputtering technique. Determination of the structural properties using High Resolution X-ray Diffraction (HRXRD) confirmed that ZnO film deposited on silicon (Si) substrate has a high quality. This result is in line with the Scanning Electron Microscopy (SEM) and Atomic Force Microscopy (AFM) which were used to image the morphology of the film, in which a rough surface was demonstrated. Photoluminescence (PL) emission is included to study the optical properties of ZnO film that shows two PL peak in the UV region at 371 nm and in visible region at 530 nm respectively.

Hashim, A. J.; Jaafar, M. S.; Ghazai, Alaa J. [Nano-Optoelectronics Research and Technology Laboratory, School of Physics, Universiti Sains Malaysia, 11800 Pinang (Malaysia); Physics Department, Science College, Thi-Qar University (Iraq)

2012-11-27T23:59:59.000Z

36

Dual operation characteristics of resistance random access memory in indium-gallium-zinc-oxide thin film transistors  

SciTech Connect (OSTI)

In this study, indium-gallium-zinc-oxide thin film transistors can be operated either as transistors or resistance random access memory devices. Before the forming process, current-voltage curve transfer characteristics are observed, and resistance switching characteristics are measured after a forming process. These resistance switching characteristics exhibit two behaviors, and are dominated by different mechanisms. The mode 1 resistance switching behavior is due to oxygen vacancies, while mode 2 is dominated by the formation of an oxygen-rich layer. Furthermore, an easy approach is proposed to reduce power consumption when using these resistance random access memory devices with the amorphous indium-gallium-zinc-oxide thin film transistor.

Yang, Jyun-Bao; Chen, Yu-Ting; Chu, Ann-Kuo [Department of Photonics, National Sun Yat-Sen University, Kaohsiung, Taiwan (China); Chang, Ting-Chang, E-mail: tcchang@mail.phys.nsysu.edu.tw [Department of Photonics, National Sun Yat-Sen University, Kaohsiung, Taiwan (China); Department of Physics, National Sun Yat-Sen University, Kaohsiung, Taiwan (China); Advanced Optoelectronics Technology Center, National Cheng Kung University, Taiwan (China); Huang, Jheng-Jie; Chen, Yu-Chun; Tseng, Hsueh-Chih [Department of Physics, National Sun Yat-Sen University, Kaohsiung, Taiwan (China); Sze, Simon M. [Department of Physics, National Sun Yat-Sen University, Kaohsiung, Taiwan (China); Department of Electronics Engineering, National Chiao Tung University, Hsinchu, Taiwan (China)

2014-04-14T23:59:59.000Z

37

Origin of deep subgap states in amorphous indium gallium zinc oxide: Chemically disordered coordination of oxygen  

SciTech Connect (OSTI)

The origin of the deep subgap states in amorphous indium gallium zinc oxide (a-IGZO), whether intrinsic to the amorphous structure or not, has serious implications for the development of p-type transparent amorphous oxide semiconductors. We report that the deep subgap feature in a-IGZO originates from local variations in the oxygen coordination and not from oxygen vacancies. This is shown by the positive correlation between oxygen composition and subgap intensity as observed with X-ray photoelectron spectroscopy. We also demonstrate that the subgap feature is not intrinsic to the amorphous phase because the deep subgap feature can be removed by low-temperature annealing in a reducing environment. Atomistic calculations of a-IGZO reveal that the subgap state originates from certain oxygen environments associated with the disorder. Specifically, the subgap states originate from oxygen environments with a lower coordination number and/or a larger metal-oxygen separation.

Sallis, S.; Williams, D. S. [Materials Science and Engineering, Binghamton University, Binghamton, New York 13902 (United States); Butler, K. T.; Walsh, A. [Center for Sustainable Technologies and Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY (United Kingdom); Quackenbush, N. F. [Department of Physics, Applied Physics, and Astronomy, Binghamton University, Binghamton, New York 13902 (United States); Junda, M.; Podraza, N. J. [Department of Physics and Astronomy, University of Toledo, Toledo, Ohio 43606 (United States); Fischer, D. A.; Woicik, J. C. [Materials Science and Engineering Laboratory, National Institute of Standards and Technology, Gaithersburg, Maryland 20899 (United States); White, B. E.; Piper, L. F. J., E-mail: lpiper@binghamton.edu [Department of Physics, Applied Physics, and Astronomy, Binghamton University, Binghamton, New York 13902 (United States); Materials Science and Engineering, Binghamton University, Binghamton, New York 13902 (United States)

2014-06-09T23:59:59.000Z

38

Hydrogen plasma treatment for improved conductivity in amorphous aluminum doped zinc tin oxide thin films  

SciTech Connect (OSTI)

Improving the conductivity of earth-abundant transparent conductive oxides (TCOs) remains an important challenge that will facilitate the replacement of indium-based TCOs. Here, we show that a hydrogen (H{sub 2})-plasma post-deposition treatment improves the conductivity of amorphous aluminum-doped zinc tin oxide while retaining its low optical absorption. We found that the H{sub 2}-plasma treatment performed at a substrate temperature of 50?°C reduces the resistivity of the films by 57% and increases the absorptance by only 2%. Additionally, the low substrate temperature delays the known formation of tin particles with the plasma and it allows the application of the process to temperature-sensitive substrates.

Morales-Masis, M., E-mail: monica.moralesmasis@epfl.ch; Ding, L.; Dauzou, F. [Photovoltaics and Thin-Film Electronics Laboratory (PVLab), Institute of Microengineering (IMT), Ecole Polytechnique Fédérale de Lausanne - EPFL, Rue de la Maladière 71b, CH-2002 Neuchatel (Switzerland); Jeangros, Q. [Interdisciplinary Centre for Electron Microscopy, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne (Switzerland); Hessler-Wyser, A. [Photovoltaics and Thin-Film Electronics Laboratory (PVLab), Institute of Microengineering (IMT), Ecole Polytechnique Fédérale de Lausanne - EPFL, Rue de la Maladière 71b, CH-2002 Neuchatel (Switzerland); Interdisciplinary Centre for Electron Microscopy, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne (Switzerland); Nicolay, S. [Centre Suisse d’Electronique et de Microtechnique (CSEM) SA, Rue Jaquet-Droz 1, CH-2002 Neuchatel (Switzerland); Ballif, C. [Photovoltaics and Thin-Film Electronics Laboratory (PVLab), Institute of Microengineering (IMT), Ecole Polytechnique Fédérale de Lausanne - EPFL, Rue de la Maladière 71b, CH-2002 Neuchatel (Switzerland); Centre Suisse d’Electronique et de Microtechnique (CSEM) SA, Rue Jaquet-Droz 1, CH-2002 Neuchatel (Switzerland)

2014-09-01T23:59:59.000Z

39

Efficient indium-tin-oxide free inverted organic solar cells based on aluminum-doped zinc oxide cathode and low-temperature aqueous solution processed zinc oxide electron extraction layer  

SciTech Connect (OSTI)

Indium-tin-oxide (ITO) free inverted organic solar cells (IOSCs) based on aluminum-doped zinc oxide (AZO) cathode, low-temperature aqueous solution processed zinc oxide (ZnO) electron extraction layer, and poly(3-hexylthiophene-2, 5-diyl):[6, 6]-phenyl C{sub 61} butyric acid methyl ester blend were realized in this work. The resulted IOSC with ZnO annealed at 150?°C shows the superior power conversion efficiency (PCE) of 3.01%, if decreasing the ZnO annealing temperature to 100?°C, the obtained IOSC also shows a PCE of 2.76%, and no light soaking issue is observed. It is found that this ZnO film not only acts as an effective buffer layer but also slightly improves the optical transmittance of AZO substrates. Further, despite the relatively inferior air-stability, these un-encapsulated AZO/ZnO IOSCs show comparable PCEs to the referenced ITO/ZnO IOSCs, which demonstrates that the AZO cathode is a potential alternative to ITO in IOSCs. Meanwhile, this simple ZnO process is compatible with large area deposition and plastic substrates, and is promising to be widely used in IOSCs and other relative fields.

Chen, Dazheng; Zhang, Chunfu, E-mail: cfzhang@xidian.edu.cn; Wang, Zhizhe; Zhang, Jincheng; Tang, Shi; Wei, Wei; Sun, Li; Hao, Yue, E-mail: yhao@xidian.edu.cn [State Key Discipline Laboratory of Wide Band Gap Semiconductor Technology, School of Microelectronics, Xidian University, No. 2 South Taibai Road, Xi'an 710071 (China)

2014-06-16T23:59:59.000Z

40

Electroluminescence from isolated defects in zinc oxide, towards electrically triggered single photon sources at room temperature  

E-Print Network [OSTI]

Single photon sources are required for a wide range of applications in quantum information science, quantum cryptography and quantum communications. However, so far majority of room temperature emitters are only excited optically, which limits their proper integration into scalable devices. In this work, we overcome this limitation and present room temperature electrically triggered light emission from localized defects in zinc oxide (ZnO) nanoparticles and thin films. The devices emit at the red spectral range and show excellent rectifying behavior. The emission is stable over an extensive period of time, providing an important prerequisite for practical devices. Our results open up possibilities to build new ZnO based quantum integrated devices that incorporate solid-state single photon sources for quantum information technologies.

Choi, Sumin; Gentle, Angus; Ton-That, Cuong; Phillips, Matthew R; Aharonovich, Igor

2015-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "zinc oxide upper" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

Synthesis and characterization of copper doped zinc oxide nanoparticles and its application in energy conversion  

Science Journals Connector (OSTI)

Abstract Solar cells, in general, perform under light source of solar influx, while the heat energy of solar radiation remains unutilized. Using an aqueous suspension of copper doped zinc oxide nanoparticles in specially-designed electrochemical cells we have observed significant voltage (maximum 632.0 mV) and storage duration (?47 h) upon thermal excitation. The cells exhibit reasonable energy conversion efficiency (maximum 1.36%). These cells generate voltage even at room temperature (?30 °C) and the voltage increases gradually with increasing temperature. When the platinum foil separating the two compartments of the electrochemical cell is replaced by a planar lipid membrane, all the parameters e.g., thermovoltage, storage capacity and the energy conversion efficiency increase significantly.

Poonam Bandyopadhyay; Anindita Dey; Ruma Basu; Sukhen Das; Papiya Nandy

2014-01-01T23:59:59.000Z

42

Recovery of manganese oxides from spent alkaline and zinc–carbon batteries. An application as catalysts for VOCs elimination  

SciTech Connect (OSTI)

Highlights: • Manganese oxides were synthesized using spent batteries as raw materials. • Spent alkaline and zinc–carbon size AA batteries were used. • A biohydrometallurgical process was employed to bio-lixiviate batteries. • Manganese oxides were active in the oxidation of VOCs (ethanol and heptane). - Abstract: Manganese, in the form of oxide, was recovered from spent alkaline and zinc–carbon batteries employing a biohydrometallurgy process, using a pilot plant consisting in: an air-lift bioreactor (containing an acid-reducing medium produced by an Acidithiobacillus thiooxidans bacteria immobilized on elemental sulfur); a leaching reactor (were battery powder is mixed with the acid-reducing medium) and a recovery reactor. Two different manganese oxides were recovered from the leachate liquor: one of them by electrolysis (EMO) and the other by a chemical precipitation with KMnO{sub 4} solution (CMO). The non-leached solid residue was also studied (RMO). The solids were compared with a MnO{sub x} synthesized in our laboratory. The characterization by XRD, FTIR and XPS reveal the presence of Mn{sub 2}O{sub 3} in the EMO and the CMO samples, together with some Mn{sup 4+} cations. In the solid not extracted by acidic leaching (RMO) the main phase detected was Mn{sub 3}O{sub 4}. The catalytic performance of the oxides was studied in the complete oxidation of ethanol and heptane. Complete conversion of ethanol occurs at 200 °C, while heptane requires more than 400 °C. The CMO has the highest oxide selectivity to CO{sub 2}. The results show that manganese oxides obtained using spent alkaline and zinc–carbon batteries as raw materials, have an interesting performance as catalysts for elimination of VOCs.

Gallegos, María V., E-mail: plapimu@yahoo.com.ar [Pla.Pi.Mu-Planta Piloto Multipropósito, (CICPBA-UNLP) Cno. Centenario y 505, M.B. Gonnet, Buenos Aires (Argentina); Falco, Lorena R., E-mail: mlfalco@quimica.unlp.edu.ar [Pla.Pi.Mu-Planta Piloto Multipropósito, (CICPBA-UNLP) Cno. Centenario y 505, M.B. Gonnet, Buenos Aires (Argentina); Peluso, Miguel A., E-mail: apelu@quimica.unlp.edu.ar [Centro de Investigación y Desarrollo en Ciencias Aplicadas, “Dr. J. Ronco” CINDECA (CONICET CCT La Plata), 47 N°257, La Plata, Buenos Aires (Argentina); Sambeth, Jorge E., E-mail: sambeth@quimica.unlp.edu.ar [Centro de Investigación y Desarrollo en Ciencias Aplicadas, “Dr. J. Ronco” CINDECA (CONICET CCT La Plata), 47 N°257, La Plata, Buenos Aires (Argentina); Thomas, Horacio J. [Pla.Pi.Mu-Planta Piloto Multipropósito, (CICPBA-UNLP) Cno. Centenario y 505, M.B. Gonnet, Buenos Aires (Argentina)

2013-06-15T23:59:59.000Z

43

Effect of various zinc oxide nanoparticles in membrane photocatalytic reactor for Congo red dye treatment  

Science Journals Connector (OSTI)

Abstract The utilisation of titanium dioxide (TiO2) in a coupling system membrane photocatalytic reactor (MPR) has been widely investigated. However, there have been very few studies regarding the zinc oxide (ZnO) photocatalyst in MPR, although it has been shown to provide better efficiency than TiO2 in certain cases, mainly for dye photodegradation. In this study, the influence of ZnO nanoparticles in MPR has been investigated for Congo red (CR) dye treatment. Four types of ZnO were synthesised via the precipitation of oxalic acid and zinc acetate solutions. The X-ray diffractometry (XRD) and transmission electron microscopy (TEM) results showed that precipitation is a valuable method for producing the smallest particle size (7–30 nm) of ZnO without any agglomerations, especially under stirring conditions in the presence of PVP (ZnO-PVP-St). As expected, the ZnO-PVP-St presented the great potential in MPR in terms of the highest photodegradation efficiency and lesser membrane flux decline, which was supported by the FESEM results. From the EDX analysis, it was confirmed that the small amount of ZnO-PVP-St did not pass through the membrane pores to the final stream. It was believed that the other remaining ZnO was reused in the photocatalytic reactor, for the continuous process of MPR. Due to the effective surface area of ZnO-PVP-St and adsorption of UV light, the optimum photocatalyst loading for the system was 0.3 g L?1 under 20 mg L?1 dye concentration and pH 7 of the initial CR dye solution.

Nur Hanis Hayati Hairom; Abdul Wahab Mohammad; Abdul Amir Hassan Kadhum

2014-01-01T23:59:59.000Z

44

Modeling with Hybrid Density Functional Theory the Electronic Band Alignment at the Zinc Oxide–Anatase Interface  

Science Journals Connector (OSTI)

Modeling with Hybrid Density Functional Theory the Electronic Band Alignment at the Zinc Oxide–Anatase Interface ... This work was pursued with financial help from national project FOTOMAT (Grant No. MAT2009-14625), regional project NUMANCIA-2 (Grant No. S2009ENE-1477), and COST action 540 PHONASUM and used the CTI computing infrastructure of the CSIC; to all of them thanks are given here. ...

José C. Conesa

2012-08-13T23:59:59.000Z

45

Use of a Rapid Cytotoxicity Screening Approach To Engineer a Safer Zinc Oxide Nanoparticle through Iron Doping  

Science Journals Connector (OSTI)

Use of a Rapid Cytotoxicity Screening Approach To Engineer a Safer Zinc Oxide Nanoparticle through Iron Doping ... § IWT Foundation Institute of Materials Science, Department of Production Engineering, University of Bremen, Germany ... While there is a lot of debate of what constitutes appropriate safety screening methods, one approach is to use the assessment of cellular injury pathways to collect knowledge about hazardous material properties that could lead to harm to humans and the environment. ...

Saji George; Suman Pokhrel; Tian Xia; Benjamin Gilbert; Zhaoxia Ji; Marco Schowalter; Andreas Rosenauer; Robert Damoiseaux; Kenneth A. Bradley; Lutz Mädler; André E. Nel

2009-12-31T23:59:59.000Z

46

Highly Attrition Resistant Zinc Oxide-Based Sorbents for H2S Removal by Spray Drying Technique  

SciTech Connect (OSTI)

Primary issues for the fluidized-bed/transport reactor process are high attrition resistant sorbent, its high sorption capacity and regenerability, durability, and cost. The overall objective of this project is the development of a superior attrition resistant zinc oxide-based sorbent for hot gas cleanup in integrated coal gasification combined cycle (IGCC). Sorbents applicable to a fluidized-bed hot gas desulfurization process must have a high attrition resistance to withstand the fast solid circulation between a desulfurizer and a regenerator, fast kinetic reactions, and high sulfur sorption capacity. The oxidative regeneration of zinc-based sorbent usually initiated at greater than 600 C with highly exothermic nature causing deactivation of sorbent as well as complication of sulfidation process by side reaction. Focusing on solving the sorbent attrition and regenerability of zinc oxide-based sorbent, we have adapted multi-binder matrices and direct incorporation of regeneration promoter. The sorbent forming was done with a spray drying technique that is easily scalable to commercial quantity.

Ryu, C.K.; Lee, J.B.; Ahn, D.H.; Kim, J.J.; Yi, C.K.

2002-09-19T23:59:59.000Z

47

Synthesis and photocatalytic applications of nano-sized zinc-doped mesoporous titanium oxide  

SciTech Connect (OSTI)

Graphical abstract: Nano-sized mesoporous titanium oxide (T0) and zinc-doped nano-sized mesoporous titanium oxides (TA–TD) were synthesized by a simple method and characterized by different techniques. All materials have been studied in the photocatalytic degradation of methylene blue under UV light, observing that the decrease in the band gap of the materials seems to have a positive influence in the photocatalytic activity. Display Omitted Highlights: ? Nano-sized mesoporous TiO{sub 2} and Zn-doped TiO{sub 2} have been synthesized and characterized. ? Band gap of the Zn-doped TiO{sub 2} decreases when the Zn amount increases. ? Materials consist of porous particles (10–20 nm). ? The photocatalytic degradation of MB has been studied for these materials. ? A decrease in the band gap of the materials enhances the photocatalytic activity. -- Abstract: The synthesis of nano-sized mesoporous titanium oxide (T0) is described by an easy synthetic method which consists of the reaction of titanium tetraisopropoxide and a solution of HNO{sub 3} in water (pH 2.0) and the subsequent elimination of the volatiles by simple distillation. On the other hand, zinc-doped mesoporous titanium oxides (TA–TD) were synthesized using the same method but adding increasing amounts of Zn(NO{sub 3}){sub 2} to give materials which contain between 0.12 and 6.17 wt.% Zn. Upon the calcinations of all the obtained materials, characterization has been carried out by using N{sub 2} adsorption–desorption isotherms, powder X-ray diffraction, X-ray fluorescence, UV–vis spectrometry, solid state {sup 47,49}Ti NMR spectroscopy and transmission electronic microscopy (TEM). The results show that all these materials are mesoporous, with BET surfaces between 54 and 121 m{sup 2}/g and similar pore diameters between 6.4 and 9.1 nm. XRD studies show that these materials mainly consist of anatase and very small amounts of brookite. TEM technique shows the small particle sizes of the corresponding materials (from 10 to 20 nm) and the porous structure of parallel and straight channels for T0, TA, TB and TC while the order in the porosity of the system is lost in TD. In addition, studies of the Kubelka-Munk function show that the band gap energy of the synthesized materials decreases with the increase of the Zn amount of the material from 3.24 (for T0) to 2.91 eV (for TD). All the studied materials have been studied in the photocatalytic degradation of methylene blue (MB) under UV light, observing that the decrease in the band gap of the materials seems to have a positive influence in the photocatalytic activity.

Sánchez-Muñoz, Sergio; Pérez-Quintanilla, Damián [Departamento de Química Inorgánica y Analítica, E.S.C.E.T., Universidad Rey Juan Carlos, C/Tulipán s/n, 28933, Móstoles (Madrid) (Spain)] [Departamento de Química Inorgánica y Analítica, E.S.C.E.T., Universidad Rey Juan Carlos, C/Tulipán s/n, 28933, Móstoles (Madrid) (Spain); Gómez-Ruiz, Santiago, E-mail: santiago.gomez@urjc.es [Departamento de Química Inorgánica y Analítica, E.S.C.E.T., Universidad Rey Juan Carlos, C/Tulipán s/n, 28933, Móstoles (Madrid) (Spain)] [Departamento de Química Inorgánica y Analítica, E.S.C.E.T., Universidad Rey Juan Carlos, C/Tulipán s/n, 28933, Móstoles (Madrid) (Spain)

2013-02-15T23:59:59.000Z

48

Alkyl Surface Treatments of Planar Zinc Oxide in Hybrid Organic/Inorganic Solar Cells  

SciTech Connect (OSTI)

Hybrid organic/inorganic solar cells have not lived up to their potential because of poor interface properties. Interfacial molecular layers provide a way of adjusting these devices to improve their performance. We have studied a prototypical system involving poly(3-hexylthiophene) (P3HT) on planar zinc oxide (ZnO) films that have been modified with two types of molecules having identical 18-carbon alkyl chain termination and different surface attachments: octadecanethiol (ODT) and octadecyltriethoxysilane (OTES). We examined the functionalized surfaces using water contact angle measurements, Kelvin probe measurements, infrared absorbance spectroscopy, and atomic force microscopy. These have shown that OTES forms disordered incomplete monolayers, while ODT is prone to develop multilayered islands. Both treatments enhance polymer ordering. However, inverted solar cell devices fabricated with these treated interfaces performed very differently. ODT improves the short circuit current (J{sub SC}), open circuit voltage (V{sub OC}), and power conversion efficiency ({eta}), while these parameters all decrease in devices constructed from OTES-treated ZnO. The differences in V{sub OC} are related to modifications of the surface dipole associated with deposition of the two types of alkyl molecules, while changes in J{sub SC} are attributed to a balance between charge transfer blocking caused by the saturated hydrocarbon and the improved hole mobility in the polymer.

Allen, C. G.; Baker, D. J.; Brenner, T. M.; Weigand, C. C.; Albin, J. M.; Steirer, K. X.; Olson, D. C.; Ladam, C.; Ginley, D. S.; Collins, R. T.; Furtak, T. E.

2012-04-26T23:59:59.000Z

49

Influence of zinc oxide nanoparticles in the nanofiltration of hazardous Congo red dyes  

Science Journals Connector (OSTI)

Abstract Zinc oxide (ZnO) nanoparticles were produced via a simple and green precipitation method under stirring conditions (ZnO-St) and under ultrasonic radiation (ZnO-Us). The nanoparticles properties were characterised with X-ray fluorescence (XRF), X-ray diffractometry (XRD) and transmission electron microscopy (TEM); and compared with commercial ZnO and no ZnO. Their influence in the nanofiltration (NF) of hazardous Congo red dyes was studied in order to provide the fundamental understanding in the interacting effect of ZnO and NF membranes. The membrane performances were significantly improved after the addition of ZnO in the dye solution in descending order as follows: ZnO-Us > ZnO-St > commercial ZnO > no ZnO. It is believed that the preparation method, agglomerations and the morphology of nanoparticles influence their interaction with dye molecules and membrane surfaces. Membrane characterisations using contact angle, X-ray fluorescence (XRF), Field Emission Scanning electron microscopy (FESEM) and Energy Dispersive X-ray Analysis (EDX) confirmed that ZnO nanoparticles have great potential for fouling mitigation in industrial NF application.

Nur Hanis Hayati Hairom; Abdul Wahab Mohammad; Abdul Amir Hassan Kadhum

2015-01-01T23:59:59.000Z

50

Production of zinc pellets  

DOE Patents [OSTI]

Uniform zinc pellets are formed for use in batteries having a stationary or moving slurry zinc particle electrode. The process involves the cathodic deposition of zinc in a finely divided morphology from battery reaction product onto a non-adhering electrode substrate. The mossy zinc is removed from the electrode substrate by the action of gravity, entrainment in a flowing electrolyte, or by mechanical action. The finely divided zinc particles are collected and pressed into pellets by a mechanical device such as an extruder, a roller and chopper, or a punch and die. The pure zinc pellets are returned to the zinc battery in a pumped slurry and have uniform size, density and reactivity. Applications include zinc-air fuel batteries, zinc-ferricyanide storage batteries, and zinc-nickel-oxide secondary batteries.

Cooper, John F. (Oakland, CA)

1996-01-01T23:59:59.000Z

51

Production of zinc pellets  

DOE Patents [OSTI]

Uniform zinc pellets are formed for use in batteries having a stationary or moving slurry zinc particle electrode. The process involves the cathodic deposition of zinc in a finely divided morphology from battery reaction product onto a non-adhering electrode substrate. The mossy zinc is removed from the electrode substrate by the action of gravity, entrainment in a flowing electrolyte, or by mechanical action. The finely divided zinc particles are collected and pressed into pellets by a mechanical device such as an extruder, a roller and chopper, or a punch and die. The pure zinc pellets are returned to the zinc battery in a pumped slurry and have uniform size, density and reactivity. Applications include zinc-air fuel batteries, zinc-ferricyanide storage batteries, and zinc-nickel-oxide secondary batteries. 6 figs.

Cooper, J.F.

1996-11-26T23:59:59.000Z

52

Zinc oxide nanoparticles and monocytes: Impact of size, charge and solubility on activation status  

SciTech Connect (OSTI)

Zinc oxide (ZnO) particle induced cytotoxicity was dependent on size, charge and solubility, factors which at sublethal concentrations may influence the activation of the human monocytic cell line THP1. ZnO nanoparticles (NP; average diameter 70 nm) were more toxic than the bulk form (< 44 ?m mesh) and a positive charge enhanced cytotoxicity of the NP despite their relatively high dissolution. A positive charge of the particles has been shown in other studies to have an influence on cell viability. Centrifugal filtration using a cut off of 5 kDa and Zn element analysis by atomic absorption spectroscopy confirmed that exposure of the ZnO particles and NP to 10% foetal bovine serum resulted in a strong association of the Zn{sup 2+} ion with protein. This association with protein may influence interaction of the ZnO particles and NP with THP1 cells. After 24 h exposure to the ZnO particles and NP at sublethal concentrations there was little effect on immunological markers of inflammation such as HLA DR and CD14, although they may induce a modest increase in the adhesion molecule CD11b. The cytokine TNF? is normally associated with proinflammatory immune responses but was not induced by the ZnO particles and NP. There was also no effect on LPS stimulated TNF? production. These results suggest that ZnO particles and NP do not have a classical proinflammatory effect on THP1 cells. -- Highlights: ? ZnO is cytotoxic to THP-1 monocytes. ? ZnO nanoparticles are more toxic than the bulk form. ? Positive charge enhances ZnO nanoparticle cytotoxicity. ? Sublethal doses of ZnO particles do not induce classical proinflammatory markers.

Prach, Morag [Edinburgh Napier University, School of Life, Sport and Social Science, Edinburgh (United Kingdom)] [Edinburgh Napier University, School of Life, Sport and Social Science, Edinburgh (United Kingdom); Stone, Vicki [Heriot-Watt University, School of Life Sciences, Edinburgh (United Kingdom)] [Heriot-Watt University, School of Life Sciences, Edinburgh (United Kingdom); Proudfoot, Lorna, E-mail: l.proudfoot@napier.ac.uk [Edinburgh Napier University, School of Life, Sport and Social Science, Edinburgh (United Kingdom)] [Edinburgh Napier University, School of Life, Sport and Social Science, Edinburgh (United Kingdom)

2013-01-01T23:59:59.000Z

53

Zinc oxyfluoride transparent conductor  

DOE Patents [OSTI]

Transparent, electrically conductive and infrared-reflective films of zinc oxyfluoride are produced by chemical vapor deposition from vapor mixtures of zinc, oxygen and fluorine-containing compounds. The substitution of fluorine for some of the oxygen in zinc oxide results in dramatic increases in the electrical conductivity. For example, diethyl zinc, ethyl alcohol and hexafluoropropene vapors are reacted over a glass surface at 400.degree. C. to form a visibly transparent, electrically conductive, infrared reflective and ultraviolet absorptive film of zinc oxyfluoride. Such films are useful in liquid crystal display devices, solar cells, electrochromic absorbers and reflectors, energy-conserving heat mirrors, and antistatic coatings.

Gordon, Roy G. (Cambridge, MA)

1991-02-05T23:59:59.000Z

54

Characterization of hydrogen dissociation over aluminium-doped zinc oxide using an efficient massively parallel framework for QM/MM calculations  

Science Journals Connector (OSTI)

...evaluations, the new methods result in a two-level...dissociation of a hydrogen molecule over a...physisorbed atomic hydrogen. parallelization...catalysis|zinc oxide|hydrogen dissociation| 1...electronics, energy production, conversion and...user. The QM/MM method (Warshel Levitt...

2011-01-01T23:59:59.000Z

55

Observation and simulation of hard x ray photoelectron diffraction to determine polarity of polycrystalline zinc oxide films with rotation domains  

SciTech Connect (OSTI)

X ray photoelectron diffraction (XPD) patterns of polar zinc oxide (ZnO) surfaces were investigated experimentally using hard x rays and monochromatized Cr K{alpha} radiation and theoretically using a cluster model approach and a dynamical Bloch wave approach. We focused on photoelectrons emitted from the Zn 2p{sub 3/2} and O 1s orbitals in the analysis. The obtained XPD patterns for the (0001) and (0001) surfaces of a ZnO single crystal were distinct for a given emitter and polarity. Polarity determination of c-axis-textured polycrystalline ZnO thin films was also achieved with the concept of XPD, even though the in-plane orientation of the columnar ZnO grains was random.

Williams, Jesse R.; Adachi, Yutaka; Ohashi, Naoki [International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044 (Japan); NIMS Saint-Gobain Research Center of Excellence for Advanced Materials, NIMS, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047 (Japan); Pis, Igor [Synchrotron X-ray Station at SPring-8, NIMS, SPring-8, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198 (Japan); Department of Surface and Plasma Science, Faculty of Mathematics and Physics, Charles University, V Holesovickach 2, Prague 8 18000 (Czech Republic); Kobata, Masaaki [Synchrotron X-ray Station at SPring-8, NIMS, SPring-8, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198 (Japan); Winkelmann, Aimo [Max-Planck-Institut fuer Mikrostrukturphysik, Weinberg 2, D-06120 Halle (Saale) (Germany); Matsushita, Tomohiro [Japan Synchrotron Radiation Research Institute (JASRI), SPring-8, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148 (Japan); Kobayashi, Keisuke [Synchrotron X-ray Station at SPring-8, NIMS, SPring-8, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198 (Japan); Hiroshima Synchrotron Radiation Center, Hiroshima University, 2-313 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-0046 (Japan)

2012-02-01T23:59:59.000Z

56

The properties of aluminum-doped zinc oxide thin films prepared by rf-magnetron sputtering from nanopowder targets  

Science Journals Connector (OSTI)

Aluminum-doped zinc oxide (ZnO:Al) films were deposited onto glass substrates by rf-magnetron sputtering at ambient temperature using, for the first time, doped nanocrystalline powder synthesized by the sol–gel method. The effects of aluminum on structural, electrical, morphological and optical properties were investigated. The films showed a hexagonal wurtzite structure and high preferential orientation in the (002) crystallographic direction. Scanning electron microscopy (SEM) and atomic force microscopy (AFM) were used to study the films morphology. The obtained samples have a typical columnar structure and a very smooth surface. The optical transmittance spectra showed transmittance higher than 90% within the visible wavelength region. A minimum resistivity of 5.436 · 10? 5 ? cm at room temperature was obtained for the 3.0 at.% Al-doped film.

Z. Ben Ayadi; L. El Mir; K. Djessas; S. Alaya

2008-01-01T23:59:59.000Z

57

Surface reactivity and oxygen migration in amorphous indium-gallium-zinc oxide films annealed in humid atmosphere  

SciTech Connect (OSTI)

An isotope tracer study, i.e., {sup 18}O/{sup 16}O exchange using {sup 18}O{sub 2} and H{sub 2}{sup 18}O, was performed to determine how post-deposition annealing (PDA) affected surface reactivity and oxygen diffusivity of amorphous indium–gallium–zinc oxide (a-IGZO) films. The oxygen tracer diffusivity was very high in the bulk even at low temperatures, e.g., 200?°C, regardless of PDA and exchange conditions. In contrast, the isotope exchange rate, dominated by surface reactivity, was much lower for {sup 18}O{sub 2} than for H{sub 2}{sup 18}O. PDA in a humid atmosphere at 400?°C further suppressed the reactivity of O{sub 2} at the a-IGZO film surface, which is attributable to –OH-terminated surface formation.

Watanabe, Ken, E-mail: Watanabe.Ken@nims.go.jp [International Center for Young Scientists (ICYS-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba 305-0044 (Japan)] [International Center for Young Scientists (ICYS-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba 305-0044 (Japan); Lee, Dong-Hee [Optical and Electronic Materials Unit, NIMS, 1-1 Namiki, Tsukuba 305-0044 (Japan) [Optical and Electronic Materials Unit, NIMS, 1-1 Namiki, Tsukuba 305-0044 (Japan); Materials and Structures Laboratory (MSL), Tokyo Institute of Technology, Mailbox R3-4, 4259 Nagatsuta, Midori-ku, Yokohama 226-0026 (Japan); Sakaguchi, Isao; Haneda, Hajime [Optical and Electronic Materials Unit, NIMS, 1-1 Namiki, Tsukuba 305-0044 (Japan)] [Optical and Electronic Materials Unit, NIMS, 1-1 Namiki, Tsukuba 305-0044 (Japan); Nomura, Kenji [Frontier Research Center, Tokyo Institute of Technology, Mailbox S2-13, 4259 Nagatsuta, Midori-ku, Yokohama 226-0026 (Japan)] [Frontier Research Center, Tokyo Institute of Technology, Mailbox S2-13, 4259 Nagatsuta, Midori-ku, Yokohama 226-0026 (Japan); Kamiya, Toshio [Materials and Structures Laboratory (MSL), Tokyo Institute of Technology, Mailbox R3-4, 4259 Nagatsuta, Midori-ku, Yokohama 226-0026 (Japan) [Materials and Structures Laboratory (MSL), Tokyo Institute of Technology, Mailbox R3-4, 4259 Nagatsuta, Midori-ku, Yokohama 226-0026 (Japan); Materials Research Center for Element Strategy (MCES), Mailbox S2-13, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-0026 (Japan); Hosono, Hideo [Materials and Structures Laboratory (MSL), Tokyo Institute of Technology, Mailbox R3-4, 4259 Nagatsuta, Midori-ku, Yokohama 226-0026 (Japan) [Materials and Structures Laboratory (MSL), Tokyo Institute of Technology, Mailbox R3-4, 4259 Nagatsuta, Midori-ku, Yokohama 226-0026 (Japan); Frontier Research Center, Tokyo Institute of Technology, Mailbox S2-13, 4259 Nagatsuta, Midori-ku, Yokohama 226-0026 (Japan); Materials Research Center for Element Strategy (MCES), Mailbox S2-13, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-0026 (Japan); Ohashi, Naoki, E-mail: Ohashi.Naoki@nims.go.jp [Optical and Electronic Materials Unit, NIMS, 1-1 Namiki, Tsukuba 305-0044 (Japan) [Optical and Electronic Materials Unit, NIMS, 1-1 Namiki, Tsukuba 305-0044 (Japan); Materials Research Center for Element Strategy (MCES), Mailbox S2-13, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-0026 (Japan)

2013-11-11T23:59:59.000Z

58

Synthesis of zinc oxide particles coated multiwalled carbon nanotubes: Dielectric properties, electromagnetic interference shielding and microwave absorption  

SciTech Connect (OSTI)

Graphical abstract: A resistor–capacitor model could well describe the relationships between the structure and the dielectric properties, electromagnetic interference shielding and microwave-absorption of the composites in the frequency range of 2–18 GHz. The resonant behavior associated with the multiwalled carbon nanotubes/zinc oxide (MWCNTs/ZnO) interface greatly broadens the absorption band. Highlights: ? ZnO-immobilized on multiwalled carbon nanotubes (MWCNTs/ZnO) have resonant behavior. ? A resistor–capacitor model describes the relation between the structure and properties. ? The composite with 40 wt% MWCNTs/ZnO has good electromagnetic interference shielding. ? Two different types of absorption peaks are found in the MWCNTs/ZnO composites. ? The existence of MWCNTs/ZnO interface broadens the absorption band. -- Abstract: Zinc oxide (ZnO) nanoparticles were coated on the surfaces of multiwalled carbon nanotubes (MWCNTs). High resolution transmission electron microscopy images show that the wurtzite ZnO immobilized on the MWCNTs is single-crystalline with a preferential [0 0 0 2] growth direction. A capacitor was generated by the interface of ZnO and MWCNTs, and a resistor–capacitor model could well describe the relationships between the structure and the dielectric properties, electromagnetic interference shielding and microwave-absorption of the composites in the frequency range of 2–18 GHz. The network built by ZnO-immobilized MWCNTs could contribute to the improvement of electrical properties. Resonant peaks associated with the capacitor formed by the interface were observed in the microwave absorption spectra, which suggest that reflection–loss peaks greatly broadens the absorption bandwidth.

Song, Wei-Li [School of Material Science and Engineering, Beijing Institute of Technology, Beijing 100081 (China)] [School of Material Science and Engineering, Beijing Institute of Technology, Beijing 100081 (China); Cao, Mao-Sheng, E-mail: caomaosheng@bit.edu.cn [School of Material Science and Engineering, Beijing Institute of Technology, Beijing 100081 (China)] [School of Material Science and Engineering, Beijing Institute of Technology, Beijing 100081 (China); Wen, Bo; Hou, Zhi-Ling; Cheng, Jin [School of Material Science and Engineering, Beijing Institute of Technology, Beijing 100081 (China)] [School of Material Science and Engineering, Beijing Institute of Technology, Beijing 100081 (China); Yuan, Jie, E-mail: yuanjie4000@sina.com [School of Information Engineering, Central University for Nationality, Beijing 100081 (China)] [School of Information Engineering, Central University for Nationality, Beijing 100081 (China)

2012-07-15T23:59:59.000Z

59

E-Print Network 3.0 - al-doped zinc oxide Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

magnetic semiconductors 3,4. In particular, transpar- ent conductive oxide (TCO) electrodes using Al-doped... - electronic devices, we investigated aluminum-doped...

60

Oxidation state of manganese in zinc pyrophosphate: Probed by luminescence and EPR studies  

SciTech Connect (OSTI)

Zn{sub 2}P{sub 2}O{sub 7}: Mn was synthesized by wet chemical route and characterized by X-ray diffraction (XRD), photoluminescence (PL) and electron paramagnetic resonance (EPR) techniques. Photoluminescence spectrum shows two bands, one at 500 nm (green emission), which is attributed to the {sup 4}T{sub 1}({sup 4}G)-{sup 6}A{sub 1}({sup 6}S) transition of Mn{sup 2+} and other centered at 686 nm (red emission) is attributed to the electronic transition between {sup 2}E and {sup 4}A{sub 2} of Mn{sup 4+} accompanied with vibronic transitions. EPR spectroscopic studies also confirmed the presence of both Mn2+ and Mn4+ ions in zinc pyrophosphate with difference in the number of fine transitions and g values (Mn{sub 4+}, S=3/2, three fine transitions and g < 2.00; Mn{sup 2+} S=5/2, five fine transitions and g=2.00).Mn{sup 2+} is attributed to presence of Mn at 6-ccordinated Zn{sup 2+} site whereas Mn{sup 4+} is due to presence substitution of Mn{sup 4+} at Zn{sup 2+} site thereby invoking charge compensation by presence of interstitial oxygen ions around Mn{sup 4+} ion or due to substitution of manganese at distorted 5-coordinated zinc site.

Gupta, Santosh K., E-mail: santoshg@barc.gov.in; Kadam, R. M., E-mail: santoshg@barc.gov.in; Natarajan, V., E-mail: santoshg@barc.gov.in; Godbole, S. V., E-mail: santoshg@barc.gov.in [Radiochemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085 (India)

2014-04-24T23:59:59.000Z

Note: This page contains sample records for the topic "zinc oxide upper" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

Ultrathin amorphous zinc-tin-oxide buffer layer for enhancing heterojunction interface quality in  

E-Print Network [OSTI]

-abundant, non-toxic, and air-stable materials represent a promising class of photovoltaic (PV) devices for cost-effective manufacturing. Earth- abundant metal-oxide semiconductors comprise an attractive set of materials for photovoltaic applications, given their auspicious optoelec- tronic properties and chemical

62

Method for the regeneration of spent molten zinc chloride  

DOE Patents [OSTI]

In a process for regenerating spent molten zinc chloride which has been used in the hydrocracking of coal or ash-containing polynuclear aromatic hydrocarbonaceous materials derived therefrom and which contains zinc chloride, zinc oxide, zinc oxide complexes and ash-containing carbonaceous residue, by incinerating the spent molten zinc chloride to vaporize the zinc chloride for subsequent condensation to produce a purified molten zinc chloride: an improvement comprising the use of clay in the incineration zone to suppress the vaporization of metals other than zinc. Optionally water is used in conjunction with the clay to further suppress the vaporization of metals other than zinc.

Zielke, Clyde W. (McMurray, PA); Rosenhoover, William A. (Pittsburgh, PA)

1981-01-01T23:59:59.000Z

63

Indium doped zinc oxide nanowire thin films for antireflection and solar absorber coating applications  

SciTech Connect (OSTI)

Indium doped ZnO nanowire thin films were prepared by thermal oxidation of Zn-In metal bilayer films at 500°C. The ZnO:In nanowires are 20-100 nm in diameter and several tens of microns long. X-ray diffraction patterns confirm the formation of oxide and indicate that the films are polycrystalline, both in the as deposited and annealed states. The transmission which is <2% for the as deposited Zn-In films increases to >90% for the ZnO:In nanowire films. Significantly, the reflectance for the as deposited films is < 10% in the region between 200 to 1500 nm and < 2% for the nanowire films. Thus, the as deposited films can be used solar absorber coatings while the nanowire films are useful for antireflection applications. The growth of nanowires by this technique is attractive since it does not involve very high temperatures and the use of catalysts.

Shaik, Ummar Pasha [ACRHEM, University of Hyderabad, Hyderabad-500046 (India); Krishna, M. Ghanashyam, E-mail: mgksp@uohyd.ac.in [ACRHEM and School of Physics, University of Hyderabad, Hyderabad-500046 (India)

2014-04-24T23:59:59.000Z

64

Inert anode containing oxides of nickel, iron and zinc useful for the electrolytic production of metals  

DOE Patents [OSTI]

An inert anode for the electrolytic production of metals such as aluminum is disclosed. The inert anode includes a ceramic oxide material preferably made from NiO, Fe.sub.2 O.sub.3 and ZnO. The inert anode composition may comprise the following mole fractions of NiO, Fe.sub.2 O.sub.3 and ZnO: 0.2 to 0.99 NiO; 0.0001 to 0.8 Fe.sub.2 O.sub.3 ; and 0.0001 to 0.3 ZnO. The inert anode may optionally include other oxides and/or at least one metal phase, such as Cu, Ag, Pd, Pt, Au, Rh, Ru, Ir and/or Os. The Ni--Fe--Co--O ceramic material exhibits very low solubility in Hall cell baths used to produce aluminum.

Ray, Siba P. (Murrysville, PA); Weirauch, Jr., Douglas A. (Murrysville, PA); Liu, Xinghua (Monroeville, PA)

2002-01-01T23:59:59.000Z

65

Design and synthesis of novel functionalized sensors for the biological imaging of zinc(II) and nitric oxide  

E-Print Network [OSTI]

CHAPTER 1: Fluorescent Sensors for the Biological sensing of Zinc(II) A variety of fluorescent techniques have been developed for the in vivo sensing of Zn2+. This chapter presents a brief overview of techniques used to ...

Won, Annie C., 1983-

2005-01-01T23:59:59.000Z

66

Chapter 9 - Zinc and Residue Recycling  

Science Journals Connector (OSTI)

Abstract Annual global production of zinc is more than 13 million tons. More than 50% of this amount is used for galvanizing while the rest is mainly split into brass production, zinc-based alloys, semi manufacturers and zinc compounds such as zinc oxide and zinc sulfate. For the zinc and steel industries, recycling of zinc-coated steel provides an important new source of raw material. Historically, the generation of zinc-rich dusts from steel recycling was a source of loss from the life-cycle (landfill); however, technologies today provide incentive for steel recyclers to minimize waste. Thus, the recycling loop is endless—both zinc and steel can be recycled again and again without losing any of their physical or chemical properties. Depending on the composition of the scrap being recycled, it can either be remelted or returned to the refining process. This chapter describes the main processes for zinc recycling from different scraps and residues.

Jürgen Antrekowitsch; Stefan Steinlechner; Alois Unger; Gernot Rösler; Christoph Pichler; Rene Rumpold

2014-01-01T23:59:59.000Z

67

Influence of admixtures of free naphthenic acids in zinc and cadmium salts on their activity in catalytic oxidation of isopropylbenzene  

SciTech Connect (OSTI)

It is confirmed that free naphthenic acids have a weak promoting effect on compounds of constant-valence metals. Free naphthenic acids have an activating effect only when present in 1.5-fold excess relative to the concentration of zinc or cadmium salt. The difference in catalytic activity of the naphthenates studied is due to the difference in the complex-forming properties of their cations.

Kozlov, S.K.; Potekhin, V.M.

1986-02-10T23:59:59.000Z

68

Effect of Short-Term Resuspension Events on the Oxidation of Cadmium, Lead, and Zinc Sulfide Phases in Anoxic Estuarine Sediments  

Science Journals Connector (OSTI)

Effect of Short-Term Resuspension Events on the Oxidation of Cadmium, Lead, and Zinc Sulfide Phases in Anoxic Estuarine Sediments ... Simulated resuspension experiments were performed for periods of 0?24 h on the three unmodified sediments as well as on preparations of the model metal sulfide phases, CdS, FeS, PbS, or ZnS (70 ?mol), that were resuspended for 24 h in seawater in both the absence and the presence of each sediment (1 g dry wt). ... For experiments where the model sulfides were resuspended in seawater (24 h) in the presence of sediments or added following the resuspension of sedi ments in seawater but prior to AVS analysis, recoveries of CdS and ZnS were generally 5?13% lower than in the absence of sediment (Table 2). ...

Stuart L. Simpson; Simon C. Apte; Graeme E. Batley

2000-09-15T23:59:59.000Z

69

Recovery of iron, carbon and zinc from steel plant waste oxides using the AISI-DOE postcombustion smelting technology  

SciTech Connect (OSTI)

This report describes a process to recover steel plant waste oxides to be used in the production of hot metal. The process flowsheet used at the pilot plant. Coal/coke breeze and iron ore pellets/waste oxides are charged into the smelting reactor. The waste oxides are either agglomerated into briquettes (1 inch) using a binder or micro-agglomerated into pellets (1/4 inch) without the use of a binder. The iron oxides dissolve in the slag and are reduced by carbon to produce molten iron. The gangue oxides present in the raw materials report to the slag. Coal charged to the smelter is both the fuel as well as the reductant. Carbon present in the waste oxides is also used as the fuel/reductant resulting in a decrease in the coal requirement. Oxygen is top blown through a central, water-cooled, dual circuit lance. Nitrogen is injected through tuyeres at the bottom of the reactor for stirring purposes. The hot metal and slag produced in the smelting reactor are tapped at regular intervals through a single taphole using a mudgun and drill system. The energy requirements of the process are provided by (i) the combustion of carbon to carbon monoxide, referred to as primary combustion and (ii) the combustion of CO and H{sub 2} to CO{sub 2} and H{sub 2}O, known as postcombustion.

Sarma, B. [Praxair, Inc., Tarrytown, NY (United States); Downing, K.B. [Fluor Daniel, Greenville, SC (United States); Aukrust, E.

1996-09-01T23:59:59.000Z

70

Thermo-physical and structural studies of sodium zinc borovanadate glasses in the region of high concentration of modifier oxides  

SciTech Connect (OSTI)

Highlights: ? Highly modified sodium zinc borovanadate glasses. ? Structural model for borovanadate glasses. ? Network forming tendency of ZnO in borovanadate glasses. ? Fragility can be limited to NBO concentration in borovanadate glasses. -- Abstract: This paper reports investigation of Na{sub 2}O and ZnO modified borovanadate glasses in the highly modified regime of compositions. These glasses have been prepared by microwave route. Ultraviolet (UV) and visible, infrared (IR), Magic Angle Spinning Nuclear Magnetic Resonance (MAS NMR) and Electron Paramagnetic Resonance (EPR) spectroscopies have been used to characterize the speciation in the glasses. Together with the variation of properties such as molar volume and glass transition temperatures, spectroscopic data indicate that at high levels of modification, ZnO tends to behave like network former. It is proposed that the observed variation of all the properties can be reasonably well understood with a structural model. The model considers that the modification and speciation in glasses are strongly determined by the hierarchy of group electronegativities. Further, it is proposed that the width of the transitions of glasses obtained under same condition reflects the fragility of the glasses. An empirical expression has been suggested to quantify fragility on the basis of width of the transition regions.

Chethana, B.K. [Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560 012 (India)] [Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560 012 (India); Reddy, C. Narayana [Maharani's Science College for Women, Bangalore 560 001 (India)] [Maharani's Science College for Women, Bangalore 560 001 (India); Rao, K.J., E-mail: kalyajrao@yahoo.co.in [Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560 012 (India)

2012-07-15T23:59:59.000Z

71

The silicon/zinc oxide interface in amorphous silicon-based thin-film solar cells: Understanding an empirically optimized contact  

SciTech Connect (OSTI)

The electronic structure of the interface between the boron-doped oxygenated amorphous silicon 'window layer' (a-SiO{sub x}:H(B)) and aluminum-doped zinc oxide (ZnO:Al) was investigated using hard x-ray photoelectron spectroscopy and compared to that of the boron-doped microcrystalline silicon ({mu}c-Si:H(B))/ZnO:Al interface. The corresponding valence band offsets have been determined to be (-2.87 {+-} 0.27) eV and (-3.37 {+-} 0.27) eV, respectively. A lower tunnel junction barrier height at the {mu}c-Si:H(B)/ZnO:Al interface compared to that at the a-SiO{sub x}:H(B)/ZnO:Al interface is found and linked to the higher device performances in cells where a {mu}c-Si:H(B) buffer between the a-Si:H p-i-n absorber stack and the ZnO:Al contact is employed.

Gerlach, D.; Wilks, R. G.; Wimmer, M.; Felix, R.; Gorgoi, M.; Lips, K.; Rech, B. [Helmholtz-Zentrum Berlin fuer Materialien und Energie GmbH, Hahn-Meitner-Platz 1, D-14109 Berlin (Germany); Wippler, D.; Mueck, A.; Meier, M.; Huepkes, J. [Institut fuer Energie- und Klimaforschung, Forschungszentrum Juelich GmbH, Wilhelm-Johnen-Strasse, D-52428 Juelich (Germany); Lozac'h, M.; Ueda, S.; Sumiya, M. [National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044 (Japan); Yoshikawa, H. [Synchrotron X-ray Station at SPring-8, NIMS, Kouto 1-1-1, Sayo-cho, Sayo-gun, Hyogo 679-5148 (Japan); Kobayashi, K. [Quantum Beam Science Directorate, Japan Atomic Energy Agency, Kouto 1-1-1, SPring-8, Sayo-cho, Sayo-gun, Hyogo 679-5148 (Japan); Baer, M. [Helmholtz-Zentrum Berlin fuer Materialien und Energie GmbH, Hahn-Meitner-Platz 1, D-14109 Berlin (Germany); Institut fuer Physik und Chemie, Brandenburgische Technische Universitaet Cottbus, Konrad-Wachsmann-Allee 1, D-03046 Cottbus (Germany)

2013-07-08T23:59:59.000Z

72

Improved zinc electrode and rechargeable zinc-air battery  

DOE Patents [OSTI]

The invention comprises an improved rechargeable zinc-air cell/battery having recirculating alkaline electrolyte and a zinc electrode comprising a porous foam support material which carries the active zinc electrode material. 5 figs.

Ross, P.N. Jr.

1988-06-21T23:59:59.000Z

73

Zinc phosphate conversion coatings  

DOE Patents [OSTI]

Zinc phosphate conversion coatings for producing metals which exhibit enhanced corrosion prevention characteristics are prepared by the addition of a transition-metal-compound promoter comprising a manganese, iron, cobalt, nickel, or copper compound and an electrolyte such as polyacrylic acid, polymethacrylic acid, polyitaconic acid and poly-L-glutamic acid to a phosphating solution. These coatings are further improved by the incorporation of Fe ions. Thermal treatment of zinc phosphate coatings to generate .alpha.-phase anhydrous zinc phosphate improves the corrosion prevention qualities of the resulting coated metal.

Sugama, Toshifumi (Wading River, NY)

1997-01-01T23:59:59.000Z

74

Zinc phosphate conversion coatings  

DOE Patents [OSTI]

Zinc phosphate conversion coatings for producing metals which exhibit enhanced corrosion prevention characteristics are prepared by the addition of a transition-metal-compound promoter comprising a manganese, iron, cobalt, nickel, or copper compound and an electrolyte such as polyacrylic acid, polymethacrylic acid, polyitaconic acid and poly-L-glutamic acid to a phosphating solution. These coatings are further improved by the incorporation of Fe ions. Thermal treatment of zinc phosphate coatings to generate {alpha}-phase anhydrous zinc phosphate improves the corrosion prevention qualities of the resulting coated metal. 33 figs.

Sugama, T.

1997-02-18T23:59:59.000Z

75

upper (hydroelectric) development  

Science Journals Connector (OSTI)

upper (hydroelectric) development, upper (hydroelectric) station, upstream (hydroelectric) development, upstream (hydroelectric) station ? Oberstufe f, oberes Wasserkraftwerk n, Oberliegerkraftwerk

2014-08-01T23:59:59.000Z

76

Photovoltaic cells employing zinc phosphide  

DOE Patents [OSTI]

A photovoltaic cell having a zinc phosphide absorber. The zinc phosphide can be a single or multiple crystal slice or a thin polycrystalline film. The cell can be a Schottky barrier, heterojunction or homojunction device. Methods for synthesizing and crystallizing zinc phosphide are disclosed as well as a method for forming thin films.

Barnett, Allen M. (Newark, DE); Catalano, Anthony W. (Wilmington, DE); Dalal, Vikram L. (Newark, DE); Masi, James V. (Wilbraham, MA); Meakin, John D. (Newark, DE); Hall, Robert B. (Newark, DE)

1984-01-01T23:59:59.000Z

77

Doping in Zinc Oxide Thin Films  

E-Print Network [OSTI]

potential applications in optoelectronics and spintronics.applications in optoelectronics, such as light emitting

Yang, Zheng

2009-01-01T23:59:59.000Z

78

Nitrogen doped zinc oxide thin film  

SciTech Connect (OSTI)

To summarize, polycrystalline ZnO thin films were grown by reactive sputtering. Nitrogen was introduced into the films by reactive sputtering in an NO{sub 2} plasma or by N{sup +} implantation. All ZnO films grown show n-type conductivity. In unintentionally doped ZnO films, the n-type conductivities are attributed to Zn{sub i}, a native shallow donor. In NO{sub 2}-grown ZnO films, the n-type conductivity is attributed to (N{sub 2}){sub O}, a shallow double donor. In NO{sub 2}-grown ZnO films, 0.3 atomic % nitrogen was found to exist in the form of N{sub 2}O and N{sub 2}. Upon annealing, N{sub 2}O decomposes into N{sub 2} and O{sub 2}. In furnace-annealed samples N{sub 2} redistributes diffusively and forms gaseous N{sub 2} bubbles in the films. Unintentionally doped ZnO films were grown at different oxygen partial pressures. Zni was found to form even at oxygen-rich condition and led to n-type conductivity. N{sup +} implantation into unintentionally doped ZnO film deteriorates the crystallinity and optical properties and leads to higher electron concentration. The free electrons in the implanted films are attributed to the defects introduced by implantation and formation of (N{sub 2}){sub O} and Zni. Although today there is still no reliable means to produce good quality, stable p-type ZnO material, ZnO remains an attractive material with potential for high performance short wavelength optoelectronic devices. One may argue that gallium nitride was in a similar situation a decade ago. Although we did not obtain any p-type conductivity, we hope our research will provide a valuable reference to the literature.

Li, Sonny X.

2003-12-15T23:59:59.000Z

79

Zinc sulfide liquefaction catalyst  

DOE Patents [OSTI]

A process for the liquefaction of carbonaceous material, such as coal, is set forth wherein coal is liquefied in a catalytic solvent refining reaction wherein an activated zinc sulfide catalyst is utilized which is activated by hydrogenation in a coal derived process solvent in the absence of coal.

Garg, Diwakar (Macungie, PA)

1984-01-01T23:59:59.000Z

80

Zinc sorption to biogenic hexagonal-birnessite particles within a hydrated bacterial biofilm  

E-Print Network [OSTI]

Zinc sorption to biogenic hexagonal-birnessite particles within a hydrated bacterial biofilm Brandy oxides found in streams, wetlands, soils, and aquifers. We investigated the mecha- nisms of Zn sorption experiments were conducted at pH 6.9 to characterize Zn sorption to this biogenic Mn oxide, and to determine

Note: This page contains sample records for the topic "zinc oxide upper" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

It's Elemental - The Element Zinc  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Copper Copper Previous Element (Copper) The Periodic Table of Elements Next Element (Gallium) Gallium The Element Zinc [Click for Isotope Data] 30 Zn Zinc 65.38 Atomic Number: 30 Atomic Weight: 65.38 Melting Point: 692.68 K (419.53°C or 787.15°F) Boiling Point: 1180 K (907°C or 1665°F) Density: 7.134 grams per cubic centimeter Phase at Room Temperature: Solid Element Classification: Metal Period Number: 4 Group Number: 12 Group Name: none What's in a name? From the German word zink. Say what? Zinc is pronounced as ZINK. History and Uses: Although zinc compounds have been used for at least 2,500 years in the production of brass, zinc wasn't recognized as a distinct element until much later. Metallic zinc was first produced in India sometime in the 1400s by heating the mineral calamine (ZnCO3) with wool. Zinc was rediscovered by

82

The Upper Atmosphere Observatory  

Science Journals Connector (OSTI)

...with *the plasma frethe progress...explorcreated an even larger number of...the upper atmosphere and ionosphere...the upper atmosphere. For this...ionospheric plasma motion simul-taneously...field is large, the horizontal...resolved. The atmospheric gravity waves...simul-taneously at a large number of...two regions plasma drifts separated...

J. V. Evans

1972-05-05T23:59:59.000Z

83

Lead, zinc, and strontium in limestone cap rock from Tatum salt dome, Mississippi  

SciTech Connect (OSTI)

Limestone cap rock at Tatum salt dome, Mississippi, contains disseminated pyrite, sphalerite, and galena, and disseminated to massive amounts of strontianite (SrCO/sub 3/) and celestite (SrSO/sub 4/). Sulfide minerals are locally present in bitumen-rich areas of the upper, massive portion of the limestone cap rock, whereas strontium minerals are disseminated throughout this zone. However, sulfide and strontium minerals are most abundant in the lower banded portion of the limestone cap rock, which consists of alternating subhorizontal light and dark-colored bands. The dark bands are composed of calcite of variable grain size, sulfides, quartz, dolomite, albite, and up to 1% bitumen that apparently formed by the biodegradation of crude oil. Lighter bands are composed of variable amounts of coarsely crystalline, euhedral calcite, strontianite, and celestite resulting in strontium (Sr) contents of up to 30% locally. Banded limestone cap rock at Tatum dome formed at the top of the actively dissolving anhydrite zone by a combination of sulfate reduction and oxidation of liquid hydrocarbons by bacteria to cause the precipitation of calcite and sulfide minerals and the accumulation of insoluble residue from the anhydrite (quartz, albite, dolomite). Lead and zinc in the sulfide minerals could have been derived from the dissolving anhydrite, but the abundance of Sr minerals present requires an external source. Present-day oil field brines in central Mississippi contain up to 3000 ppm Sr, and basin brines of similar composition apparently contributed Sr to the cap-rock environment during formation.

Saunders, J.A.

1988-09-01T23:59:59.000Z

84

(Data in thousand metric tons of zinc content unless otherwise noted) Domestic Production and Use: The value of zinc mined in 2013, based on zinc contained in concentrate, was about  

E-Print Network [OSTI]

materials included galvanizing residues and crude zinc oxide processed from electric arc furnace dust. Import Sources (2009­12): Ore and concentrate: Peru, 76%; Ireland, 8%; Mexico, 8%; Canada, 7%; and other, 1%. Metal: Canada, 72%; Mexico, 13%; Peru, 7%; Spain, 2%; and other, 6%. Waste and scrap: Canada, 65

85

Fluidizable zinc titanate materials with high chemical reactivity and attrition resistance  

DOE Patents [OSTI]

Highly durable and chemically reactive zinc titanate materials are prepared in a particle size range of 50 to 400 .mu.m suitable for a fluidized-bed reactor for removing reduced sulfur species in a gaseous form by granulating a mixture of fine zinc oxide and titanium oxide with inorganic and organic binders and by optional additions of small amounts of activators such as CoO and MoO.sub.3 ; and then indurating it at 800.degree. to 900.degree. C. for a time sufficient to produce attrition-resistant granules.

Gupta, Raghubir P. (Durham, NC); Gangwal, Santosh K. (Durham, NC); Jain, Suresh C. (Morgantown, WV)

1993-01-01T23:59:59.000Z

86

A Low Temperature Fully Lithographic Process For Metal–Oxide Field-Effect Transistors  

E-Print Network [OSTI]

We report a low temperature ( ~ 100à °C) lithographic method for fabricating hybrid metal oxide/organic field-effect transistors (FETs) that combine a zinc-indium-oxide (ZIO) semiconductor channel and organic, parylene, ...

Sodini, Charles G.

87

Speciation and bioavailability of zinc in amended sediments  

SciTech Connect (OSTI)

The speciation and bioavailability of zinc (Zn) in smelter-contaminated sediments were investigated as a function of phosphate (apatite) and organic amendment loading rate. Zinc species identified in preamendment sediment were zinc hydroxide-like phases, sphalerite, and zinc sorbed to an iron oxide via X-ray adsorption near edge structure (XANES) spectroscopy. Four months after adding the amendments to the contaminated sediment, hopeite, a Zn phosphate mineral, was identified indicating phosphate was binding and sequestering available Zn and Zn pore water concentrations were decreased at levels of 90% or more. Laboratory experiments indicate organic amendments exhibit a limited effect and may hinder sequestration of pore water Zn when mixed with apatite. The acute toxicity of the sediment Zn was evaluated with Hyalella azteca, and bioaccumulation of Zn with Lumbriculus variegates. The survivability of H. azteca increased as a function of phosphate (apatite) loading rate. In contaminated sediment without apatite, no specimens of H. azteca survived. The bioaccumulation of Zn in L. variegates also followed a trend of decreased bioaccumulation with increased phosphate loading in the contaminated sediment. The research supports an association between Zn speciation and bioavailability.

Williams, Aaron G.B.; Scheckel, Kirk G.; McDermott, Gregory; Gratson, David; Neptune, Dean; Ryan, James A.

2011-12-09T23:59:59.000Z

88

Nanowire-based All Oxide Solar Cells  

SciTech Connect (OSTI)

We present an all-oxide solar cell fabricated from vertically oriented zinc oxide nanowires and cuprous oxide nanoparticles. Our solar cell consists of vertically oriented n-type zinc oxide nanowires, surrounded by a film constructed from p-type cuprous oxide nanoparticles. Our solution-based synthesis of inexpensive and environmentally benign oxide materials in a solar cell would allow for the facile production of large-scale photovoltaic devices. We found that the solar cell performance is enhanced with the addition of an intermediate oxide insulating layer between the nanowires and the nanoparticles. This observation of the important dependence of the shunt resistance on the photovoltaic performance is widely applicable to any nanowire solar cell constructed with the nanowire array in direct contact with one electrode.

Yang*, Benjamin D. Yuhas and Peidong; Yang, Peidong

2008-12-07T23:59:59.000Z

89

Summary and assessment of METC zinc ferrite hot coal gas desulfurization test program, final report: Volume 2, Appendices  

SciTech Connect (OSTI)

The Morgantown Energy Technology Center (METC) has conducted a test program to develop a zinc ferrite-based high temperature desulfurization process which could be applied to fuel gas entering downstream components such as molten carbonate fuel cells or gas turbines. As a result of prior METC work with iron oxide and zinc oxide sorbents, zinc ferrite evolved as a candidate with the potential for high capacity, low equilibrium levels of H/sub 2/S, and structural stability after multiple regenerations. The program consisted of laboratory-scale testing with a two-inch diameter reactor and simulated fixed-bed gasifier gas; bench-scale testing with a six-inch diameter reactor and actual gas from the METC 42-inch fixed bed gasifier; as well as laboratory-scale testing of zinc ferrite with simulated fluidized bed gasifier gas. Data from sidestream testing are presented. 18 refs.

Underkoffler, V.S.

1986-12-01T23:59:59.000Z

90

Effects of Zinc Deficiency on Cellular Processes and Morphology in Ehrlich Ascites Tumor Cells  

Science Journals Connector (OSTI)

...nmol/mg after a 1 hr incubation as...drinking zinc (80 and 160 @.sg/mb...is required to rebate this observation...electron transport and State 3 oxidative...0 5 0 50 100 500 Zn ng atoms/mg...with cells for 1 hr prior to addition...values of 0.105 and 0.110 @.ig...

Leon A. Saryan; Daniel T. Minkel; Patricia J. Dolhun; Barbara L. Calhoun; Susan Wielgus; Marilyn Schaller; and David H. Petering

1979-07-01T23:59:59.000Z

91

The Upper Atmosphere Observatory  

Science Journals Connector (OSTI)

...DATA, JOURNAL OF ATMOSPHERIC AND TERRESTRIAL...IN NEAR-EARTH PLASMA, SPACE SCIENCE...INVESTIGATION OF WHISTLING ATMOSPHERICS, PHILOSOPHICAL...TRANSPOLAR EXOSPHERIC PLASMA .1. PLASMASPHERE...dynamics of the upper atmosphere. For this purpose...the ionospheric plasma motion simul-taneously...

J. V. Evans

1972-05-05T23:59:59.000Z

92

Response of zinc, iron and copper status parameters to supplementation with zinc or zinc and iron in women  

SciTech Connect (OSTI)

Supplementation with zinc at levels available over-the-counter may compromise iron or copper status. This study examined the effects of zinc(50mg/day) or zinc and iron(50 mg each/day) on 18 women aged 25-40. Subjects were matched on initial levels of serum ferritin(SF) and erythrocyte superoxide dismutase(ESOD) and randomly assigned to Group Z (zinc) or F-Z (iron and zinc). The following were measured pretreatment and after 6 and 10 weeks treatment: serum zinc (BZ), salivary sediment zinc (SSZ), hemoglobin (Hgb), hematocrit (Hct), SF, serum ceruloplasmin (Cp) and ESOD. Effects of treatment and weeks of treatment on changes from initial blood and saliva levels were analyzed using AOV. BZ increased (P=0.0144) and ESOD decreased (P=0.0001) with weeks of treatment. Differences due to treatment are presented. No effects were noted on Hgb, Hct or Cp. Intakes of zinc supplements at about 4X RDA appear to decrease copper(ESOD) and iron(SF) status. Use of iron w/zinc may be protective for FE but not Cu, and may compromise zinc (SSZ) status.

Yadrick, K.; Kenney, M.A.; Winterfeldt, E.

1986-03-05T23:59:59.000Z

93

Analysis of Zinc 65 Contamination after Vacuum Thermal Process  

SciTech Connect (OSTI)

Radioactive contamination with a gamma energy emission consistent with {sup 65}Zn was detected in a glovebox following a vacuum thermal process. The contaminated components were removed from the glovebox and subjected to examination. Selected analytical techniques were used to determine the nature of the precursor material, i.e., oxide or metallic, the relative transferability of the deposit and its nature. The deposit was determined to be borne from natural zinc and was further determined to be deposited as a metallic material from vapor.

Korinko, Paul S.; Tosten, Michael H.

2013-01-01T23:59:59.000Z

94

Upper East Fork Poplar Creek  

Broader source: Energy.gov [DOE]

This document explains the cleanup activities and any use limitations for the land surrounding the Upper East Fork Poplar Creek.

95

Morphology control of zinc regeneration for zinc–air fuel cell and battery  

Science Journals Connector (OSTI)

Abstract Morphology control is crucial both for zinc–air batteries and for zinc–air fuel cells during zinc regeneration. Zinc dendrite should be avoided in zinc–air batteries and zinc pellets are yearned to be formed for zinc–air fuel cells. This paper is mainly to analyze the mechanism of shape change and to control the zinc morphology during charge. A numerical three-dimensional model for zinc regeneration is established with COMSOL software on the basis of ionic transport theory and electrode reaction electrochemistry, and some experiments of zinc regeneration are carried out. The deposition process is qualitatively analyzed by the kinetics Monte Carlo method to study the morphological change from the electrocrystallization point of view. Morphological evolution of deposited zinc under different conditions of direct currents and pulse currents is also investigated by simulation. The simulation shows that parametric variables of the flowing electrolyte, the surface roughness and the structure of the electrode, the charging current and mode affect morphological evolution. The uniform morphology of deposited zinc is attained at low current, pulsating current or hydrodynamic electrolyte, and granular morphology is obtained by means of an electrode of discrete columnar structure in combination with high current and flowing electrolyte.

Keliang Wang; Pucheng Pei; Ze Ma; Huachi Xu; Pengcheng Li; Xizhong Wang

2014-01-01T23:59:59.000Z

96

Zinc Treatment Effects on Corrosion Behavior of 304 Stainless Steel in High Temperature, Hydrogenated Water  

SciTech Connect (OSTI)

Trace levels of soluble zinc(II) ions (30 ppb) maintained in mildly alkaline, hydrogenated water at 260 C were found to lower the corrosion rate of austenitic stainless steel (UNS S30400) by about a factor of five, relative to a non-zinc baseline test after 10,000 hr. Characterizations of the corrosion oxide layer via grazing incidence X-ray diffraction and X-ray photoelectron spectroscopy in combination with argon ion milling and target factor analysis, confirmed the presence of two spinel oxide phases and minor amounts of recrystallized nickel. Based on the distribution of the three oxidized alloying constituents (Fe, Cr, Ni) with respect to depth and oxidation state, it was concluded that: (a) corrosion occurs in a non-selective manner, but approximately 30% of the oxidized iron is released to the water, and (b) the two spinel oxides exist as a ferrite-based outer layer (Ni{sub 0.1}Zn{sub 0.6}Fe{sub 0.3})(Fe{sub 0.95}Cr{sub 0.05}){sub 2}O{sub 4} on top of a chromite-based inner layer (Ni{sub 0.1}Zn{sub 0.2}Fe{sub 0.7})(Fe{sub 0.4}Cr{sub 0.6}){sub 2}O{sub 4}. These results suggest that immiscibility in the Fe{sub 3}O{sub 4}-ZnFe{sub 2}O{sub 4} binary may play a role in controlling the zinc content of the outer layer. On the other hand, the lower corrosion rate caused by zinc additions is believed to be a consequence of corrosion oxide film stabilization due to the substitution reaction equilibrium: z Zn{sup 2+}(aq) + FeCr{sub 2}O{sub 4}(s) {approx} z Fe{sup 2+}(aq) + (Zn{sub z}Fe{sub 1-z})Cr{sub 2}O{sub 4}(s). The liquid-solid distribution coefficient for the reaction, defined by the ratio of total zinc to iron ion concentrations in solution divided by the Zn(II)/Fe(II) ratio in the solid, z/(1-z), was found to be 0.184. This interpretation is consistent with the benefits of zinc treatment being concentration dependent.

S.E. Ziemniak; M. Hanson

2001-03-20T23:59:59.000Z

97

(Data in thousand metric tons of zinc content, unless otherwise noted) Domestic Production and Use: The value of zinc mined in 1997, based on contained zinc recoverable from  

E-Print Network [OSTI]

190 ZINC (Data in thousand metric tons of zinc content, unless otherwise noted) Domestic Production by the agriculture, chemical, paint, and rubber industries. Major coproducts of zinc mining and smelting: 1993 1994 1995 1996 1997e Production: Mine, recoverable 488 570 614 600 6071 Primary slab zinc 240 217

98

(Data in thousand metric tons of zinc content, unless otherwise noted) Domestic Production and Use: The value of zinc mined in 2001, based on contained zinc recoverable from  

E-Print Network [OSTI]

188 ZINC (Data in thousand metric tons of zinc content, unless otherwise noted) Domestic Production-fourths of production. Three primary and 12 large- and medium-sized secondary smelters refined zinc metal of commercial principally by the agriculture, chemical, paint, and rubber industries. Major coproducts of zinc mining

99

(Data in thousand metric tons of zinc content, unless otherwise noted) Domestic Production and Use: The value of zinc mined in 2002, based on contained zinc recoverable from  

E-Print Network [OSTI]

190 ZINC (Data in thousand metric tons of zinc content, unless otherwise noted) Domestic Production% of production. Two primary and 13 large- and medium-sized secondary smelters refined zinc metal of commercial principally by the agriculture, chemical, paint, and rubber industries. Major coproducts of zinc mining

100

(Data in thousand metric tons of zinc content, unless otherwise noted) Domestic Production and Use: The value of zinc mined in 1999, based on contained zinc recoverable from  

E-Print Network [OSTI]

190 ZINC (Data in thousand metric tons of zinc content, unless otherwise noted) Domestic Production by the agriculture, chemical, paint, and rubber industries. Major coproducts of zinc mining and smelting: 1995 1996 1997 1998 1999e Production: Mine, recoverable1 614 600 605 722 775 Primary slab zinc 232 226

Note: This page contains sample records for the topic "zinc oxide upper" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

(Data in thousand metric tons of zinc content, unless otherwise noted) Domestic Production and Use: The value of zinc mined in 1998, based on contained zinc recoverable from  

E-Print Network [OSTI]

192 ZINC (Data in thousand metric tons of zinc content, unless otherwise noted) Domestic Production principally by the agriculture, chemical, paint, and rubber industries. Major coproducts of zinc mining--United States: 1994 1995 1996 1997 1998e Production: Mine, recoverable 570 614 598 605 6551 Primary slab zinc

102

Regulation of Zinc Transport in the Choroid Plexus  

E-Print Network [OSTI]

expression by prolactin. These data indicate there is a coordinated regulation of MT-1 and zinc transporters during extracellular zinc depletion or supplementation....

Aquino, Mayra

2014-07-21T23:59:59.000Z

103

THE SYNTHESIS OF MONOCLINIC ZINC DIPHOSPHIDE SINGLE CRYSTALS  

E-Print Network [OSTI]

General Phosphorous Deposit . . . . . . . . . . . . . . . .Ampules Zinc Diphosphide C. Phosphorous Sesquizinc Mechanismi 43, 114 The Zinc-Phosphorous System, L. A. Bitjutskaya, B.

Mowles, Thomas Andrew

2011-01-01T23:59:59.000Z

104

Original article Improvement of zinc intestinal absorption  

E-Print Network [OSTI]

Original article Improvement of zinc intestinal absorption and reduction of zinc/iron interaction of caseins, improves its absorption and could prevent inhibition by other nutrients such as iron (Fe). The absorption of Zn (100 Ilmol/L) bound to the 1-25 CN ((3-CN(1-25)) of (3-casein, or as ZnS04 was studied using

Boyer, Edmond

105

Rational Design of Zinc Phosphide Heterojunction Photovoltaics  

E-Print Network [OSTI]

Rational Design of Zinc Phosphide Heterojunction Photovoltaics Thesis by Jeffrey Paul Bosco would meet me with the same energy and enthusiasm regarding the topic of zinc phosphide photovoltaics to the field of earth-abundant photovoltaics has been indispensable to my work. Greg also made a great mentor

Winfree, Erik

106

Upper Los Alamos Canyon Cleanup  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Upper Los Alamos Canyon Cleanup Upper Los Alamos Canyon Cleanup Upper Los Alamos Canyon Cleanup The Upper Los Alamos Canyon Project involves cleaning up hazardous materials left over from some of the Laboratory's earliest activities. Contact Environmental Communication & Public Involvement P.O. Box 1663 MS M996 Los Alamos, NM 87545 (505) 667-0216 Email Located along Los Alamos Canyon from 7th Street to the Pajarito Ski Hill, the Upper Los Alamos Canyon Project involves examining sites in present and former Laboratory technical areas to see if any further environmental cleanup actions are needed. If not, the Laboratory can apply to have these sites removed permanently from LANL's Hazardous Waste Permit, meaning that no further actions are needed at those sites. Among the 115 sites included in the Upper LA Canyon Project, 54 have been

107

Upper Los Alamos Canyon Cleanup  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

septic tanks, sanitary and industrial waste lines, storm drains, incinerators, transformer sites, and areas in which soil has been contaminated. The Upper Los Alamos Canyon...

108

Defects in Divided Zinc?Copper Aluminate Spinels:? Structural Features and Optical Absorption Properties  

Science Journals Connector (OSTI)

Defects in Divided Zinc?Copper Aluminate Spinels:? Structural Features and Optical Absorption Properties† ... XRD-powder data refinements (Rietveld method) have demonstrated that both compound series crystallize in the spinel structure (Fd3?m) and exhibit similar inversion rates. ... 8 This is the case of CuAlO2 composition adopting the delafossite-type structure9and which can be considered as a p-type transparent conductive oxide (TCO). ...

Anne Le Nestour; Manuel Gaudon; Gérard Villeneuve; Marco Daturi; Ronn Andriessen; Alain Demourgues

2007-04-07T23:59:59.000Z

109

Rechargeable zinc cell with alkaline electrolyte which inhibits shape change in zinc electrode  

DOE Patents [OSTI]

An improved rechargeable zinc cell is described comprising a zinc electrode and another electrode such as, for example, a nickel-containing electrode, and having an electrolyte containing KOH and a combination of KF and K[sub 2]CO[sub 3] salts which inhibits shape change in the zinc electrode, i.e., the zinc electrode exhibits low shape change, resulting in an improved capacity retention of the cell over an number of charge-discharge cycles, while still maintaining high discharge rate characteristics. 8 figures.

Adler, T.C.; McLarnon, F.R.; Cairns, E.J.

1994-04-12T23:59:59.000Z

110

Synthesis and Characterization of Functional Nanostructured Zinc Oxide Thin Films  

E-Print Network [OSTI]

.1149/1.2357098, copyright The Electrochemical Society 65 #12;66 reduced environmental impact and a minimum undesirable inter-temperature thin film growth technique has been developed to fabricate a new generation of smart and functional and structural requirements of their applications in gas sensors and solar cells. The rapid photothermal

Chow, Lee

111

Persistent ion beam induced conductivity in zinc oxide nanowires  

SciTech Connect (OSTI)

We report persistently increased conduction in ZnO nanowires irradiated by ion beam with various ion energies and species. This effect is shown to be related to the already known persistent photo conduction in ZnO and dubbed persistent ion beam induced conduction. Both effects show similar excitation efficiency, decay rates, and chemical sensitivity. Persistent ion beam induced conduction will potentially allow countable (i.e., single dopant) implantation in ZnO nanostructures and other materials showing persistent photo conduction.

Johannes, Andreas; Niepelt, Raphael; Gnauck, Martin; Ronning, Carsten [Institute of Solid State Physics, Friedrich-Schiller-University Jena, Max-Wien-Platz 1, 07743 Jena (Germany)

2011-12-19T23:59:59.000Z

112

Aluminum-doped Zinc Oxide Nanoink - Energy Innovation Portal  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

cells, photochromic windows, chemical sensors, and biosensors. Description The optoelectronic properties of AZO nanocrystals can be tuned by controlling their aluminum content....

113

Zinc Oxide Based Nonvolatile Memories and Random Lasers  

E-Print Network [OSTI]

2013). [41] 2010 Optoelectronics Market Report. Databeans,studied. The ZnO based optoelectronics devices are studiedmethods [7]. For many optoelectronics and microelectronics

Huang, Jian

2013-01-01T23:59:59.000Z

114

Zinc Oxide and Nitride Nanowire Based Light Emitting Diodes  

E-Print Network [OSTI]

of incandescent light bulb, fluorescent lamp, and blue lightof incandescent light bulb, fluorescent lamp, and blue lightincandescent bulb and is on the same order as fluorescent

Lai, Elaine Michelle

2009-01-01T23:59:59.000Z

115

Properties and sensor performance of zinc oxide thin films  

E-Print Network [OSTI]

Reactively sputtered ZnO thin film gas sensors were fabricated onto Si wafers. The atmosphere dependent electrical response of the ZnO micro arrays was examined. The effects of processing conditions on the properties and ...

Min, Yongki, 1965-

2003-01-01T23:59:59.000Z

116

Zinc Oxide and Nitride Nanowire Based Light Emitting Diodes  

E-Print Network [OSTI]

only be able to find incandescent lightbulbs and fluorescent10: Output spectra of incandescent light bulb, fluorescentemission spectra. The incandescent light bulb for example

Lai, Elaine Michelle

2009-01-01T23:59:59.000Z

117

Third order nonlinear optical properties of bismuth zinc borate glasses  

SciTech Connect (OSTI)

Third order nonlinear optical characterization of bismuth zinc borate glasses are reported here using different laser pulse durations. Bismuth zinc borate glasses with compositions xBi{sub 2}O{sub 3}-30ZnO-(70-x) B{sub 2}O{sub 3} (where x?=?30, 35, 40, and 45?mol. %) have been prepared by melt quenching method. These glasses were characterized by Raman, UV-Vis absorption, and Z scan measurements. Raman and UV-Vis spectroscopic results indicate that non-bridging oxygens increase with increase of bismuth content in the glass. Nonlinear absorption and refraction behavior in the nanosecond (ns), picosecond (ps), and femtosecond (fs) time domains were studied in detail. Strong reverse saturable absorption due to dominant two-photon absorption (TPA) was observed with both ps and fs excitations. In the case of ns pulse excitations, TPA and free-carrier absorption processes contribute for the nonlinear absorption. Two-photon absorption coefficient (?) and the absorption cross section due to free carriers (?{sub e}) are estimated by theoretical fit of the open aperture Z-scan measurements and found to be dependent on the amount of bismuth oxide in the glass composition. In both ns and fs regimes the sign and magnitude of the third order nonlinearity are evaluated, and the optical limiting characteristics are also reported.

Shanmugavelu, B.; Ravi Kanth Kumar, V. V., E-mail: ravi.phy@pondiuni.edu.in [Department of Physics, Pondicherry University, Puducherry 605 014 (India); Kuladeep, R.; Narayana Rao, D. [School of Physics, University of Hyderabad, Hyderabad 500046, Andhra Pradesh (India)

2013-12-28T23:59:59.000Z

118

Extracellular Proteins Promote Zinc Sulfide Aggregation  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Extracellular Proteins Promote Zinc Sulfide Aggregation Print Extracellular Proteins Promote Zinc Sulfide Aggregation Print Researchers from the ALS, Berkeley Lab's National Center for Electron Microscopy (NCEM), and Lawrence Livermore National Laboratory analyzed biofilm samples rich in zinc sulfide and dominated by sulfate-reducing bacteria, which were collected from lead-zinc mine waters. The researchers were curious about the relationship of the organic material and metals, particularly how organics affect mobility, and its potential for bioremediation. It is known that some organics promote aggregation. Amine-bearing molecules, for example, can organize sulfide nanoparticles into semiconductor nanowires. The research team used a series of imaging techniques and detectors to analyze aggregates of biogenic zinc sulfide nanocrystals in the biofilms. Their examination yielded excellent results and some surprises. They were able to prove that natural organic matter promotes dense aggregation of the zinc sulfide nanocrystals into much larger spheroids and that the organic matter is preserved in nanometer-scale pores in the spheroids. What was not expected was the presence of proteins in the spheroids, making them a key component in aggregation and an example of extracellular biomineralization.

119

Extracellular Proteins Promote Zinc Sulfide Aggregation  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Extracellular Proteins Promote Extracellular Proteins Promote Zinc Sulfide Aggregation Extracellular Proteins Promote Zinc Sulfide Aggregation Print Wednesday, 26 September 2007 00:00 Researchers from the ALS, Berkeley Lab's National Center for Electron Microscopy (NCEM), and Lawrence Livermore National Laboratory analyzed biofilm samples rich in zinc sulfide and dominated by sulfate-reducing bacteria, which were collected from lead-zinc mine waters. The researchers were curious about the relationship of the organic material and metals, particularly how organics affect mobility, and its potential for bioremediation. It is known that some organics promote aggregation. Amine-bearing molecules, for example, can organize sulfide nanoparticles into semiconductor nanowires. The research team used a series of imaging techniques and detectors to analyze aggregates of biogenic zinc sulfide nanocrystals in the biofilms. Their examination yielded excellent results and some surprises. They were able to prove that natural organic matter promotes dense aggregation of the zinc sulfide nanocrystals into much larger spheroids and that the organic matter is preserved in nanometer-scale pores in the spheroids. What was not expected was the presence of proteins in the spheroids, making them a key component in aggregation and an example of extracellular biomineralization.

120

Extracellular Proteins Promote Zinc Sulfide Aggregation  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Extracellular Proteins Promote Zinc Sulfide Aggregation Print Extracellular Proteins Promote Zinc Sulfide Aggregation Print Researchers from the ALS, Berkeley Lab's National Center for Electron Microscopy (NCEM), and Lawrence Livermore National Laboratory analyzed biofilm samples rich in zinc sulfide and dominated by sulfate-reducing bacteria, which were collected from lead-zinc mine waters. The researchers were curious about the relationship of the organic material and metals, particularly how organics affect mobility, and its potential for bioremediation. It is known that some organics promote aggregation. Amine-bearing molecules, for example, can organize sulfide nanoparticles into semiconductor nanowires. The research team used a series of imaging techniques and detectors to analyze aggregates of biogenic zinc sulfide nanocrystals in the biofilms. Their examination yielded excellent results and some surprises. They were able to prove that natural organic matter promotes dense aggregation of the zinc sulfide nanocrystals into much larger spheroids and that the organic matter is preserved in nanometer-scale pores in the spheroids. What was not expected was the presence of proteins in the spheroids, making them a key component in aggregation and an example of extracellular biomineralization.

Note: This page contains sample records for the topic "zinc oxide upper" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

Costs of chronic waterborne zinc exposure and the consequences of zinc acclimation on the gill/zinc interactions of rainbow trout in hard and soft water  

SciTech Connect (OSTI)

Juvenile rainbow trout were exposed to zinc in both moderately hard water and soft water for 30 d. Only the 450 {micro}g/L zinc-exposed fish experienced significant mortality. Zinc exposure caused no effect on growth rate, but growth affected tissue zinc levels. Whole body zinc levels were elevated, but gill sand liver showed no consistent increases relative to controls over the 30 d. Therefore, tissue zinc residues were not a good indicator of chronic zinc exposure. After the 30-d exposure, physiological function tests were performed. Zinc was 5.4 times more toxic in soft water. All zinc-exposed trout had acclimated to the metal, as seen by an increase in the LC50 of 2.2 to 3.9 times over that seen in control fish. Physiological costs related to acclimation appeared to be few. Zinc exposure had no effect on whole body Ca{sup 2+} or Na{sup +} levels, on resting or routine metabolic rates, or on fixed velocity sprint performance. However, critical swimming speed (U{sub Crit}) was significantly reduced in zinc-exposed fish, an effect that persisted in zinc-free water. Using radioisotopic techniques to distinguish new zinc incorporation, the gills were found to possess two zinc pools: a fast turnover pool and a slow turnover pool. The fast pool was much larger in soft water than in hard water, but at most it accounted for < 3.5% of the zinc content of the gills. The size of the slow pool was unknown, but its loading rate was faster in soft water. Chronic zinc exposure was found to increase the size of the fast pool and to increase the loading rate of the slow pool.

Alsop, D.H.; McGeer, J.C.; McDonald, D.G.; Wood, C.M. [McMaster Univ., Hamilton, Ontario (Canada). Dept. of Biology

1999-05-01T23:59:59.000Z

122

Zinc and Health: Current Status and Future Directions Zinc Transport in the Brain: Routes of Zinc Influx and Efflux in Neurons1,2  

E-Print Network [OSTI]

homeostasis. J. Nutr. 130: 1484S--1487S, 2000. KEY WORDS: zinc ion transport heavy metal ions trace and that mediate extracellular zinc toxicity and (3) a plasma membrane transporter potentially present in all elements metal transporters rat Large amounts of zinc are present in the brain, yet very little

123

(Data in thousand metric tons of zinc content unless otherwise noted) Domestic Production and Use: The value of zinc mined in 2006, based on contained zinc recoverable from  

E-Print Network [OSTI]

186 ZINC (Data in thousand metric tons of zinc content unless otherwise noted) Domestic Production accounted for about 80% of total U.S. production. Two primary and 12 large- and medium-sized secondary, and rubber industries. Major coproducts of zinc mining and smelting, in order of decreasing tonnage, were

124

(Data in thousand metric tons of zinc content unless otherwise noted) Domestic Production and Use: The value of zinc mined in 2004, based on contained zinc recoverable from  

E-Print Network [OSTI]

188 ZINC (Data in thousand metric tons of zinc content unless otherwise noted) Domestic Production% of total U.S. production. Two primary and 12 large- and medium-sized secondary smelters refined zinc metal were used principally by the agriculture, chemical, paint, and rubber industries. Major coproducts

125

(Data in thousand metric tons of zinc content, unless otherwise noted) Domestic Production and Use: The value of zinc mined in 2003, based on contained zinc recoverable from  

E-Print Network [OSTI]

188 ZINC (Data in thousand metric tons of zinc content, unless otherwise noted) Domestic Production three-fourths of total U.S. production. Two primary and 12 large- and medium-sized secondary smelters uses. Zinc compounds and dust were used principally by the agriculture, chemical, paint, and rubber

126

(Data in thousand metric tons of zinc content unless otherwise noted) Domestic Production and Use: The value of zinc mined in 2005, based on contained zinc recoverable from  

E-Print Network [OSTI]

190 ZINC (Data in thousand metric tons of zinc content unless otherwise noted) Domestic Production accounted for 86% of total U.S. production. Two primary and 12 large- and medium-sized secondary smelters uses. Zinc compounds and dust were used principally by the agriculture, chemical, paint, and rubber

127

Hydrometallurgical process for recovering iron sulfate and zinc sulfate from baghouse dust  

DOE Patents [OSTI]

A process for recovering zinc-rich and iron-rich fractions from the baghouse dust that is generated in various metallurgical operations, especially in steel-making and other iron-making plants, comprises the steps of leaching the dust by hot concentrated sulfuric acid so as to generate dissolved zinc sulfate and a precipitate of iron sulfate, separating the precipitate from the acid by filtration and washing with a volatile liquid, such as methanol or acetone, and collecting the filtered acid and the washings into a filtrate fraction. The volatile liquid may be recovered by distillation, and the zinc may be removed from the filtrate by alternative methods, one of which involves addition of a sufficient amount of water to precipitate hydrated zinc sulfate at 10 C, separation of the precipitate from sulfuric acid by filtration, and evaporation of water to regenerate concentrated sulfuric acid. The recovery of iron may also be effected in alternative ways, one of which involves roasting the ferric sulfate to yield ferric oxide and sulfur trioxide, which can be reconverted to concentrated sulfuric acid by hydration. The overall process should not generate any significant waste stream. 1 figure.

Zaromb, S.; Lawson, D.B.

1994-02-15T23:59:59.000Z

128

Lithium metal reduction of plutonium oxide to produce plutonium metal  

DOE Patents [OSTI]

A method is described for the chemical reduction of plutonium oxides to plutonium metal by the use of pure lithium metal. Lithium metal is used to reduce plutonium oxide to alpha plutonium metal (alpha-Pu). The lithium oxide by-product is reclaimed by sublimation and converted to the chloride salt, and after electrolysis, is removed as lithium metal. Zinc may be used as a solvent metal to improve thermodynamics of the reduction reaction at lower temperatures. Lithium metal reduction enables plutonium oxide reduction without the production of huge quantities of CaO--CaCl.sub.2 residues normally produced in conventional direct oxide reduction processes.

Coops, Melvin S. (Livermore, CA)

1992-01-01T23:59:59.000Z

129

Targeted sensors for investigating mobile Zinc in biology  

E-Print Network [OSTI]

Chapter 1. Sensing Strategies for Detection of Mobile Zinc. Mobile zinc plays important physiological roles in areas such as the hippocampus, prostate, and pancreas. A better understanding of the distribution of intracellular ...

Chyan, Wen, S.B. Massachusetts Institute of Technology

2013-01-01T23:59:59.000Z

130

Characterization of a plasma membrane zinc transporter in rat brain  

E-Print Network [OSTI]

Ireland Ltd. Keywords: Ion transport; Membrane vesicles; Excitotoxicity; Zinc homeostasis; TransitionCharacterization of a plasma membrane zinc transporter in rat brain Robert A. Colvin* Department transport in the brain. This report provides convincing evidence of a zinc transporter in plasma membrane

131

Regenerative zinc/air and zinc/ferricyanide batteries for stationary power applications  

SciTech Connect (OSTI)

The authors report a novel configuration for a zinc-particle, packed-bed anode in which an open structure of high hydraulic permeability is maintained indefinitely in a cell with closely spaced walls by the formation of particle bridges and associated gaps. The configuration minimizes electrolyte pumping costs, allows rapid refueling and partial recharge, and provides for 100% zinc consumption. This approach benefits zinc/air fuel batteries by allowing nearly continuous operation and fuel recycle without commercial infrastructure; it benefits Zn/[Fe(CN){sub 6}]{sup {minus}3} batteries by eliminating shape-change and polarization problems found with planar anodes.

Cooper, J.F.; Keene, L.E.; Noring, J.; Maimoni, A.; Peterman, K.

1994-05-01T23:59:59.000Z

132

Solid oxide fuel cell with monolithic core  

DOE Patents [OSTI]

A solid oxide fuel cell in which fuel and oxidant gases undergo an electrochemical reaction to produce an electrical output includes a monolithic core comprised of a corrugated conductive sheet disposed between upper and lower generally flat sheets. The corrugated sheet includes a plurality of spaced, parallel, elongated slots which form a series of closed, linear, first upper and second lower gas flow channels with the upper and lower sheets within which a fuel gas and an oxidant gas respectively flow. Facing ends of the fuel cell are generally V-shaped and provide for fuel and oxidant gas inlet and outlet flow, respectively, and include inlet and outlet gas flow channels which are continuous with the aforementioned upper fuel gas and lower oxidant gas flow channels. The upper and lower flat sheets and the intermediate corrugated sheet are preferably comprised of ceramic materials and are securely coupled together such as by assembly in the green state and sintering together during firing at high temperatures. A potential difference across the fuel cell, or across a stacked array of similar fuel cells, is generated when an oxidant gas such as air and a fuel such as hydrogen gas is directed through the fuel cell at high temperatures, e.g., between 700 C and 1,100 C. 8 figs.

McPheeters, C.C.; Mrazek, F.C.

1988-08-02T23:59:59.000Z

133

Solid oxide fuel cell with monolithic core  

DOE Patents [OSTI]

A solid oxide fuel cell in which fuel and oxidant gases undergo an electrochemical reaction to produce an electrical output includes a monolithic core comprised of a corrugated conductive sheet disposed between upper and lower generally flat sheets. The corrugated sheet includes a plurality of spaced, parallel, elongated slots which form a series of closed, linear, first upper and second lower gas flow channels with the upper and lower sheets within which a fuel gas and an oxidant gas respectively flow. Facing ends of the fuel cell are generally V-shaped and provide for fuel and oxidant gas inlet and outlet flow, respectively, and include inlet and outlet gas flow channels which are continuous with the aforementioned upper fuel gas and lower oxidant gas flow channels. The upper and lower flat sheets and the intermediate corrugated sheet are preferably comprised of ceramic materials and are securely coupled together such as by assembly in the green state and sintering together during firing at high temperatures. A potential difference across the fuel cell, or across a stacked array of similar fuel cells, is generated when an oxidant gas such as air and a fuel such as hydrogen gas is directed through the fuel cell at high temperatures, e.g., between 700.degree. C. and 1100.degree. C.

McPheeters, Charles C. (Plainfield, IL); Mrazek, Franklin C. (Hickory Hills, IL)

1988-01-01T23:59:59.000Z

134

A preliminary study of zinc-catalyzed polycarbonate production  

E-Print Network [OSTI]

Company. Adipic acid was pruchased fron MCB Manufacturing Chemists, Inc. 12 2. Synthesized Reagents a. Zinc Adipate from Zinc metal lb. 4 g (0. 251 mol) of zinc filings were dissolved in 50 mL of concentrated hydrochloric acid, generating a solution... Figure 12. Two identical catalytic runs using the same batch of Strem catalyst A comparison between the zinc glutarate and zinc adipate catalyst was then made by comparing the rates of production of the polymer and the cyclic carbonate. The rates...

Griffith, Amy Elizabeth

1992-01-01T23:59:59.000Z

135

Zinc ?2-Glycoprotein: A Multidisciplinary Protein  

Science Journals Connector (OSTI)

...in the seminal fluid (18). Hale et al. (44) determined the...Electrophoresis 2007;28:1989-96. 44 Hale LP, Price DT, Sanchez LM...quality index, ATP utilization, gas exchange, and ionic balance...Diabetes 2003;52:2175-81. 136 Hale LP. Zinc alpha-2-glycoprotein...

Md. Imtaiyaz Hassan; Abdul Waheed; Savita Yadav; Tej P. Singh; and Faizan Ahmad

2008-06-01T23:59:59.000Z

136

Defect-induced magnetism and transport phenomena in epitaxial oxides  

E-Print Network [OSTI]

that the transition metal dopants (i.e. Mn) have no influence on the ferromagnetic nature of the zinc oxide, but that localised magnetic moments on intrinsic defects are in fact responsible for the ferromagnetic behaviour. A relation between strain (related to defect...

Schoofs, Frank

2012-07-03T23:59:59.000Z

137

(Data in thousand metric tons of zinc content unless otherwise noted) Domestic Production and Use: The value of zinc mined in 2012, based on zinc contained in concentrate, was about  

E-Print Network [OSTI]

188 ZINC (Data in thousand metric tons of zinc content unless otherwise noted) Domestic Production uses. Zinc compounds and dust were used principally by the agricultural, chemical, paint, and rubber industries. Salient Statistics--United States: 2008 2009 2010 2011 2012 e Production: Mine, zinc in ore

138

(Data in thousand metric tons of zinc content unless otherwise noted) Domestic Production and Use: The value of zinc mined in 2010, based on zinc contained in concentrate, was about  

E-Print Network [OSTI]

188 ZINC (Data in thousand metric tons of zinc content unless otherwise noted) Domestic Production uses. Zinc compounds and dust were used principally by the agriculture, chemical, paint, and rubber, and germanium. Salient Statistics--United States: 2006 2007 2008 2009 2010 e Production: Mine, zinc in ore

139

(Data in thousand metric tons of zinc content unless otherwise noted) Domestic Production and Use: The value of zinc mined in 2011, based on zinc contained in concentrate, was about  

E-Print Network [OSTI]

188 ZINC (Data in thousand metric tons of zinc content unless otherwise noted) Domestic Production uses. Zinc compounds and dust were used principally by the agriculture, chemical, paint, and rubber industries. Salient Statistics--United States: 2007 2008 2009 2010 2011 e Production: Mine, zinc in ore

140

(Data in thousand metric tons of zinc content unless otherwise noted) Domestic Production and Use: The value of zinc mined in 2007, based on zinc contained in concentrate, was about  

E-Print Network [OSTI]

190 ZINC (Data in thousand metric tons of zinc content unless otherwise noted) Domestic Production U.S. production. One primary and 12 large- and medium-sized secondary smelters refined zinc metal by the agriculture, chemical, paint, and rubber industries. Major coproducts of zinc mining and smelting, in order

Note: This page contains sample records for the topic "zinc oxide upper" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

(Data in thousand metric tons of zinc content unless otherwise noted) Domestic Production and Use: The value of zinc mined in 2009, based on zinc contained in concentrate, was about  

E-Print Network [OSTI]

184 ZINC (Data in thousand metric tons of zinc content unless otherwise noted) Domestic Production uses. Zinc compounds and dust were used principally by the agriculture, chemical, paint, and rubber, and germanium. Salient Statistics--United States: 2005 2006 2007 2008 2009e Production: Mine, zinc in ore

142

(Data in thousand metric tons of zinc content, unless otherwise noted) Domestic Production and Use: The value of zinc mined in 2000, based on contained zinc recoverable from  

E-Print Network [OSTI]

186 ZINC (Data in thousand metric tons of zinc content, unless otherwise noted) Domestic Production three-fourths of production. Three primary and 12 large- and medium-sized secondary smelters refined compounds and dust were used principally by the agriculture, chemical, paint, and rubber industries. Major

143

Cation Defects and Conductivity in Transparent Oxides  

SciTech Connect (OSTI)

High quality doped zinc oxide and mixed transition metal spinel oxide films have been deposited by means of sputter deposition from metal and metal oxide targets, and by spin casting from aqueous or alcoholic precursor solutions. Deposition conditions and post-deposition processing are found to alter cation oxidation states and their distributions in both oxide materials resulting in marked changes to both optical transmission and electrical response. For ZnO, partial reduction of the neat or doped material by hydrogen treatment of the heated film or by electrochemical processing renders the oxide n-type conducting. Continued reduction was found to diminish conductivity. In contrast, oxidation of the infrared transparent p-type spinel conductors typified by NiCo2O4 was found to increase conductivity. The disparate behavior of these two materials is caused in part by the sign of the charge carrier and by the existence of two different charge transport mechanisms that are identified as free carrier conduction and polaron hopping. While much work has been reported concerning structure/property relationships in the free carrier conducting oxides, there is a significantly smaller body of information on transparent polaron conductors. In this paper, we identify key parameters that promote conductivity in mixed metal spinel oxides and compare their behavior with that of the free carrier TCO’s.

Exarhos, Gregory J.; Windisch, Charles F.; Ferris, Kim F.; Owings, Robert R.

2007-10-24T23:59:59.000Z

144

Fluorescent chemosensors for exploring zinc metalloneurochemistry and detecting mercury in aqueous solution  

E-Print Network [OSTI]

Chapter 1. An Introduction to Zinc Metalloneurochemistry and Zinc Detection in Biology. This chapter presents an overview of zinc neurophysiology and pathology, which provides motivation for the design of new tools and ...

Nolan, Elizabeth M. (Elizabeth Marie), 1978-

2006-01-01T23:59:59.000Z

145

E-Print Network 3.0 - acids determines zinc Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

zinc transporter in rat brain Summary: as 15% of brain zinc is sequestered in synap- tic vesicles 3 associated with excitatory amino acid... .41 mM EGTA. Zinc65 caught on...

146

Commercial Pecans: Controlling Rosette, Diseases and Zinc Deficiency  

E-Print Network [OSTI]

Pecan losses from diseases and insufficient zinc nutrition can be prevented by following effective grove management practices. Descriptions of diseases and recommendations for controls are included....

Lee, Thomas A.; Krausz, Joseph P.

2006-04-13T23:59:59.000Z

147

Peel, Kate, Dominik Weiss, and Laura Sigg. Zinc isotope ...  

Science Journals Connector (OSTI)

Zinc isotope composition of settling particles as a proxy for biogeochemical processes in lakes: Insights from the eutrophic Lake Greifen, Switzerland. Kate Peel ...

2009-07-03T23:59:59.000Z

148

Effect of pH, phosphorus, and water-extractable zinc of soil on plant growth and zinc absorption  

E-Print Network [OSTI]

EFFECT OF pH~ PHOSPHORilS, AND WATER-EXTRACTABLE ZINC OF SOIL ON PLANT GROWTH AND ZINC ABSORPT1ON A Thesis Najafali Karimian Submitted to the Graduate College cf Texas ARM University in partial fulfillment of the requirement for the degree... of MASTER OF SCIENCE December 1970 Major Sub ject: Soil Chemistry EFFECT OF pH, PHOSPHORUS, AND WATER-EXTRACTABLE ZINC OF SOIL ON PLANT GROWTH AND ZINC ABSORPTION A Thesis by NajafaIi Karimian Approved as to sty1e and content by: Chairman Committee...

Karimian, Najafali

2012-06-07T23:59:59.000Z

149

E-Print Network 3.0 - artificial zinc finger Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

for creating designer zinc finger Summary: Heterodimeric DNA methyltransferases as a platform for creating designer zinc finger... hypomethylation. The end-to-end fusion of...

150

E-Print Network 3.0 - air zinc increases Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Forms of Zinc in a Smelter- Summary: , and the application of sewage sludge and agrochemicals, soils are increasingly contaminated with zinc. In Switzerland... 2-64 GEOLOGICAL...

151

Metal Oxides  

Science Journals Connector (OSTI)

Metal oxides are the class of materials having the widest application in gas sensors. This chapter presents information related to the application of various metal oxides in gas sensors designed on different p...

Ghenadii Korotcenkov

2013-01-01T23:59:59.000Z

152

Glutamine and zinc methionine supplementation to dairy calves  

E-Print Network [OSTI]

into 4 treatment groups with 5 animals each. The calves were fed milk-replacer diets supplemented with 0 or 1% L-glutamine, 1% glycine, or zinc methionine (40 ppm zinc) for a 45-day-period. Next, calves were subjected to intravenous administration...

Simon, Robin Renee

1999-01-01T23:59:59.000Z

153

COPPER AND ZINC DEFICIENCIES TREATMENT BY INTRAMUSCULAR INJECTIONS IN SHEEP  

E-Print Network [OSTI]

COPPER AND ZINC DEFICIENCIES TREATMENT BY INTRAMUSCULAR INJECTIONS IN SHEEP M. LAMAND Claudine LAB in the injection site. Copper per os dosing is efficient for treating deficient animals (Lamand et al., 1969 consuming. Therefore we tried to per- fect a copper and zinc deficiency treatment allowing the injection

Paris-Sud XI, Université de

154

Polarization and corrosion of electrogalvanized steel - evaluation of zinc coatings obtained from waste-derived zinc electrolytes  

SciTech Connect (OSTI)

The corrosion of electrogalvanized 1070 steel wire has been investigated in molar quiescent ammonium chloride and ammonium sulfate under near-neutral conditions. Zinc coatings obtained from waste-derived electrolytes were evaluated vs. coatings from relatively pure zinc electrolytes. The waste source of zinc was brass smelter flue dust. Corrosion rates were measured by Tafel line extrapolation and the polarization resistance technique. Values of the Tafel slopes and the corrosion currents were also compared with those for pure zinc (99.999%). Corrosion rates were found to be affected by the medium employed, pH, and bimetal diameter reduction (drawing). Drawn electrogalvanized stee displays higher values of the Tafel slopes than do the as-plated samples. The Tafel slopes are different from thos obtained on pure zinc. This is assumed to be due to inhomogeneous surface features obtained from additive adsorption (during plating) and residual lubricants used in the drawing process as well as surface structure. The corrosion rates of electrogalvanized samples plated in the waste-derived zinc electrolytes were similar to the corrosion rates of samples plated in relatively pure zinc electrolytes. Therefore, wastes are a potential source of zinc for electrogalvanizing.

Dattilo, M.

1985-11-01T23:59:59.000Z

155

Radar Measurement of the Upper Atmosphere  

Science Journals Connector (OSTI)

...of the Upper Atmosphere James C. G...two decades large radars have...of the upper atmosphere. These radars...ionospheric plasma, all as functions...ionospheric plasma by detection...is wasted. Atmospheric radar scientists...305 m and an area of 73,000...frequency of 430 MHz. The radar...

James C. G. Walker

1979-10-12T23:59:59.000Z

156

Upper White River Watershed Alliance Upper White River Watershed Alliance (UWRWA)  

E-Print Network [OSTI]

Upper White River Watershed Alliance Upper White River Watershed Alliance (UWRWA) P.O. Box 2065 integrity of the White River ecosystem. To successfully accomplish the vision of UWRWA, a 16-county was formed. It exists to improve and protect water quality on a watershed basis in the larger Upper White

157

Electrochemical synthesis and characterization of zinc oxalate nanoparticles  

SciTech Connect (OSTI)

Highlights: ? Synthesis of zinc oxalate nanoparticles via electrolysis of a zinc plate anode in sodium oxalate solutions. ? Design of a Taguchi orthogonal array to identify the optimal experimental conditions. ? Controlling the size and shape of particles via applied voltage and oxalate concentration. ? Characterization of zinc oxalate nanoparticles by SEM, UV–vis, FT-IR and TG–DTA. - Abstract: A rapid, clean and simple electrodeposition method was designed for the synthesis of zinc oxalate nanoparticles. Zinc oxalate nanoparticles in different size and shapes were electrodeposited by electrolysis of a zinc plate anode in sodium oxalate aqueous solutions. It was found that the size and shape of the product could be tuned by electrolysis voltage, oxalate ion concentration, and stirring rate of electrolyte solution. A Taguchi orthogonal array design was designed to identify the optimal experimental conditions. The morphological characterization of the product was carried out by scanning electron microscopy. UV–vis and FT-IR spectroscopies were also used to characterize the electrodeposited nanoparticles. The TG–DTA studies of the nanoparticles indicated that the main thermal degradation occurs in two steps over a temperature range of 350–430 °C. In contrast to the existing methods, the present study describes a process which can be easily scaled up for the production of nano-sized zinc oxalate powder.

Shamsipur, Mojtaba, E-mail: mshamsipur@yahoo.com [Department of Chemistry, Razi University, Kermanshah (Iran, Islamic Republic of); Roushani, Mahmoud [Department of Chemistry, Razi University, Kermanshah (Iran, Islamic Republic of); Department of Chemistry, Ilam University, Ilam (Iran, Islamic Republic of); Pourmortazavi, Seied Mahdi [Faculty of Material and Manufacturing Technologies, Malek Ashtar University of Technology, Tehran (Iran, Islamic Republic of)

2013-03-15T23:59:59.000Z

158

Electrical Properties of Tungsten Oxide Films  

Science Journals Connector (OSTI)

... appear that the mechanism of electron emission with oxide films is different from that with roughened electrodes. This would be the case for short gaps if the electrons were drawn ... located on the upper surface of the film, as envisaged by Paetov1, while with roughened electrodes it is possible that photo-ionization can take place throughout the gap due to ...

F. LLEWELLYN JONES

1946-03-23T23:59:59.000Z

159

Testing of a refuelable zinc/air bus battery  

SciTech Connect (OSTI)

We report tests of a refuelable zinc/air battery of modular, bipolar-cell design, intended for fleet electric busses and vans. The stack consists of twelve 250-cm{sup 2} cells built of two units: (1) a copper-clad glass-reinforced epoxy board supporting anode and cathode current collectors, and (2) polymer frame providing for air- and electrolyte distribution and zinc fuel storage. The stack was refueled in 4 min. by a hydraulic transfer of zinc particles entrained in solution flow.

Cooper, J.F.; Fleming, D.; Koopman, R.; Hargrove, D.; Maimoni, A.; Peterman, K.

1995-02-22T23:59:59.000Z

160

A Simple Oxygen Detector Using Zinc–Air Battery  

Science Journals Connector (OSTI)

Elementary/Middle School Science; High School/Introductory Chemistry; Demonstrations; Hands-On Learning/Manipulatives; Gases; Laboratory Equipment/Apparatus ... Therefore, Faraday’s law can be confirmed by measuring the change in the volume of O2 consumed or the gained mass of the zinc–air battery with increasing quantity of electricity in a circuit using the zinc–air battery as the power source. ... (2-4) At the operating voltage of the zinc–air battery (1.4 V), the electric current in a circuit, with a small resistance, linearly changes with respect to the atmospheric O2 concentration. ...

Yoong Kin Hooi; Masayoshi Nakano; Nobuyoshi Koga

2013-12-24T23:59:59.000Z

Note: This page contains sample records for the topic "zinc oxide upper" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

Dispenser Printed Zinc Microbattery with an Ionic Liquid Gel Electrolyte  

E-Print Network [OSTI]

thin-film rechargeable batteries. Materials Science andMicroscopic Nickel-Zinc Batteries for Use in AutonomousM, and RJ Brodd. “What Are Batteries, Fuel Cells, and

Ho, Christine Chihfan

2010-01-01T23:59:59.000Z

162

The effects of alcohol use on zinc status  

E-Print Network [OSTI]

Alcohol consumption has been shown to have adverse affects on bone growth and maintenance, although the mechanism has not been elucidated. The objective of this research was to look at the relationship between zinc and alcohol as a possible...

Chapman, Lisa Louise

1998-01-01T23:59:59.000Z

163

AN INVENTORY OF PHOTOGRAPHS OF ZINC ELECTRODEPOSITED FROM ACID ELECTROLYTES  

E-Print Network [OSTI]

Electrical circuit diagram Experimental apparatus Limiting current plaT7~us, 0.05 Levich plot (i vs. :;Electrical Circuit Diagrams Striated Zinc Deposit (GOULD, Inc. Photograph) Typical Striated Deposits Striation Length vs.

Faltemier, J.L.

2011-01-01T23:59:59.000Z

164

Upper Scioto Valley School | Open Energy Information  

Open Energy Info (EERE)

Valley School Valley School Jump to: navigation, search Name Upper Scioto Valley School Facility Upper Scioto Valley School Sector Wind energy Facility Type Community Wind Facility Status In Service Owner Upper Scioto Valley Schools Energy Purchaser Upper Scioto Valley Schools Location McGuffey OH Coordinates 40.691542°, -83.786353° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":40.691542,"lon":-83.786353,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

165

Tensor rank : some lower and upper bounds  

E-Print Network [OSTI]

The results of Strassen [25] and Raz [19] show that good enough tensor rank lower bounds have implications for algebraic circuit/formula lower bounds. We explore tensor rank lower and upper bounds, focusing on explicit ...

Forbes, Michael Andrew

2011-01-01T23:59:59.000Z

166

ON COMPUTING UPPER LIMITS TO SOURCE INTENSITIES  

SciTech Connect (OSTI)

A common problem in astrophysics is determining how bright a source could be and still not be detected in an observation. Despite the simplicity with which the problem can be stated, the solution involves complicated statistical issues that require careful analysis. In contrast to the more familiar confidence bound, this concept has never been formally analyzed, leading to a great variety of often ad hoc solutions. Here we formulate and describe the problem in a self-consistent manner. Detection significance is usually defined by the acceptable proportion of false positives (background fluctuations that are claimed as detections, or Type I error), and we invoke the complementary concept of false negatives (real sources that go undetected, or Type II error), based on the statistical power of a test, to compute an upper limit to the detectable source intensity. To determine the minimum intensity that a source must have for it to be detected, we first define a detection threshold and then compute the probabilities of detecting sources of various intensities at the given threshold. The intensity that corresponds to the specified Type II error probability defines that minimum intensity and is identified as the upper limit. Thus, an upper limit is a characteristic of the detection procedure rather than the strength of any particular source. It should not be confused with confidence intervals or other estimates of source intensity. This is particularly important given the large number of catalogs that are being generated from increasingly sensitive surveys. We discuss, with examples, the differences between these upper limits and confidence bounds. Both measures are useful quantities that should be reported in order to extract the most science from catalogs, though they answer different statistical questions: an upper bound describes an inference range on the source intensity, while an upper limit calibrates the detection process. We provide a recipe for computing upper limits that applies to all detection algorithms.

Kashyap, Vinay L.; Siemiginowska, Aneta [Smithsonian Astrophysical Observatory, 60 Garden Street, Cambridge, MA 02138 (United States); Van Dyk, David A.; Xu Jin [Department of Statistics, University of California, Irvine, CA 92697-1250 (United States); Connors, Alanna [Eureka Scientific, 2452 Delmer Street, Suite 100, Oakland, CA 94602-3017 (United States); Freeman, Peter E. [Department of Statistics, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, PA 15213 (United States); Zezas, Andreas, E-mail: vkashyap@cfa.harvard.ed, E-mail: asiemiginowska@cfa.harvard.ed, E-mail: dvd@ics.uci.ed, E-mail: jinx@ics.uci.ed, E-mail: aconnors@eurekabayes.co, E-mail: pfreeman@cmu.ed, E-mail: azezas@cfa.harvard.ed [Physics Department, University of Crete, P.O. Box 2208, GR-710 03, Heraklion, Crete (Greece)

2010-08-10T23:59:59.000Z

167

E-Print Network 3.0 - ahmtp1 zinc transporters Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

jxberr025 Summary: ) RESEARCH PAPER Poplar maintains zinc homeostasis with heavy metal genes HMA4 and PCS1 Joshua P. Adams1... necessary heavy metals like zinc (Zn) while...

168

Exploring the Zinc Metallome of Cultured Cortical Neurons Using Synchroton Radiation X-Ray Fluorescence Microscopy  

Science Journals Connector (OSTI)

Zinc is abundant in the brain, and dysregulation of zinc ion homeostasis has been implicated in Alzheimer’s disease pathology and neuronal death after brain ischemia. Many studies have established that cytosol...

Robert A. Colvin PhD; Christian J. Stork; Yang V. Li; Barry Lai

2012-01-01T23:59:59.000Z

169

Formation of Biomimetic Porous Calcium Phosphate Coatings on Surfaces of Polyethylene/Zinc Stearate Blends  

E-Print Network [OSTI]

Formation of Biomimetic Porous Calcium Phosphate Coatings on Surfaces of Polyethylene/Zinc Stearate phosphate coating, polyethylene Abstract Studies were undertaken investigating improvements presented in this paper concentrated on adding zinc stearate to polyethylene. Important potential benefits

Drelich, Jaroslaw W.

170

Ratiometric and intensity-based zinc sensors built on rhodol and rhodamine platforms  

E-Print Network [OSTI]

A xanthene-forming condensation reaction yields rhodol and rhodamine dyes carrying a zinc-binding ligand that includes the aniline-type nitrogen donor of the fluorophores. Upon zinc coordination in neutral aqueous solution, ...

Tomat, Elisa

171

Upper San Juan Basin Biological Assessment  

E-Print Network [OSTI]

the biological assessment. The Colorado Natural Heritage Program began its research by updating its BiologicalUpper San Juan Basin Biological Assessment Colorado State University 8002 Campus Delivery Fort Collins, CO 80523-8002 June 2003 Colorado Natural Heritage Program #12;Southwest Land Alliance Pagosa

172

Enhanced durability of high-temperature desulfurization sorbents for moving-bed applications. Option 2 Program: Development and testing of zinc titanate sorbents  

SciTech Connect (OSTI)

One of the most advantageous configurations of the integrated gasification combined cycle (IGCC) power system is coupling it with a hot gas cleanup for the more efficient production of electric power in an environmentally acceptable manner. In conventional gasification cleanup systems, closely heat exchangers are necessary to cool down the fuel gases for cleaning, sometimes as low as 200--300{degree}F, and to reheat the gases prior to injection into the turbine. The result is significant losses in efficiency for the overall power cycle. High-temperature coal gas cleanup in the IGCC system can be operated near 1000{degree}F or higher, i.e., at conditions compatible with the gasifier and turbine components, resulting is a more efficient overall system. GE is developing a moving-bed, high-temperature desulfurization system for IGCC power systems in which mixed-metal oxides are currently being used as desulfurization sorbents. The objective of this contract is to identify and test fabrication methods and sorbent chemical compositions that enhance the long-term chemical reactivity and mechanical durability of zinc ferrite and other novel sorbents for moving-bed, high-temperature desulfurization of coal-derived gases. Zinc ferrite was studied under the base program of this contract. In the next phase of this program novel sorbents, particularly zinc titanate-based sorbents, are being studied under the remaining optional programs. This topical report summarizes only the work performed under the Option 2 program. In the course of carrying out the program, more than 25 zinc titanate formulations have been prepared and characterized to identify formulations exhibiting enhanced properties over the baseline zinc titanate formulation selected by the US Department of Energy.

Ayala, R.E.

1993-04-01T23:59:59.000Z

173

Zinc finger point mutations within the WT1 gene in Wilms tumor patients  

Science Journals Connector (OSTI)

...Genetics Zinc finger point mutations within the WTI gene in Wilms tumor patients (zinc finger...1992 ABSTRACT A proposed Wilms tumor gene, WTI, which encodes a zinc ringer protein...amino acid change. To our knowl- edge, a WTI gene missense mutation has not been detected...

M H Little; J Prosser; A Condie; P J Smith; V Van Heyningen; N D Hastie

1992-01-01T23:59:59.000Z

174

Separation and Purification Technology 40 (2004) 251257 Copper and zinc sorption by treated oil shale ash  

E-Print Network [OSTI]

Jordanian oil shale ash was used as an adsorbent for the removal of copper and zinc from aqueous solution.V. All rights reserved. Keywords: Oil shale; Ash; Adsorption; Copper and zinc removal 1. IntroductionSeparation and Purification Technology 40 (2004) 251­257 Copper and zinc sorption by treated oil

Shawabkeh, Reyad A.

175

HIGH-CURRENT ZINC-AIR MICROBATTERY BASED ON A MICROMACHINED MULTILAYER LATERAL METALLIC SCAFFOLD  

E-Print Network [OSTI]

HIGH-CURRENT ZINC-AIR MICROBATTERY BASED ON A MICROMACHINED MULTILAYER LATERAL METALLIC SCAFFOLD A, characterized, and compared with commercially available zinc-air batteries. A single layer initial structure maximum energy density [1]. Zinc-air batteries are good candidates for the previously mentioned microscale

176

Optical waveguides in SBN by zinc vapor diffusion  

E-Print Network [OSTI]

at 600'C for a 12. 5 i1m Wide 1000'C Zinc Vapor Diffused SBN:60 Waveguide Measured at X = 0. 81 pm. IV. SBN:60 Amplitude Modulator Results . . . . . V. SBN:60 Mach-Zehnder Interferometer Results. . . . VI. Voltage-Length Product Comparison...: (a) extraordinary (TM), (b) 1. 5 x ordinary (TE). 12. Surface damage on SBN:60 diffused at 1000'C with an SiOz diffusion mask. 13. Zinc in-diffusion in SBN:60 25 . . . . . 26 . . . . . 27 . . . . . 28 29 14. Barium out-diffuison in SBN:60...

Quinn, Jeffrey Dale

1991-01-01T23:59:59.000Z

177

Oxidation of Propane by Doped Nickel Oxides  

Science Journals Connector (OSTI)

... present study, however, indicate that in the absence of excess oxygen, direct oxidation of propane by the oxide lattice can occur.

D. W. McKEE

1964-04-11T23:59:59.000Z

178

Low Cost Fabrication of Oxide Dispersion Strengthened Materials  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Low Cost Fabrication of Oxide Dispersion Low Cost Fabrication of Oxide Dispersion Strengthened Materials Background To obtain significant increases in the efficiency of coal fired power plants, steam pressure and temperature must be increased beyond current technology to advanced ultra-supercritical (A-USC) conditions -temperatures and pressures up to 760 degrees Celsius (°C) and 35 megapascals (MPa). The upper bounds of operating pressure and temperature are limited by the properties of the current set

179

RNA binding by the Wilms tumor suppressor zinc finger proteins  

Science Journals Connector (OSTI)

...November 5, 1995) ABSTRACT The Wilms tumor suppressor gene WTI is implicated in the ontogeny of genito-urinary abnormalities, including Denys-Drash syndrome and Wilms tumor of the kidney. WTI encodes Kruppel-type zinc finger proteins that can regulate...

A Caricasole; A Duarte; S H Larsson; N D Hastie; M Little; G Holmes; I Todorov; A Ward

1996-01-01T23:59:59.000Z

180

Sedimentary parameters of upper Barataria Bay, Louisiana  

E-Print Network [OSTI]

upon oonditions of sedimentation is exerted by currents set in motion 'by oceanic tides. Tidal activity causes sediment to be introduced into the upper bay and controls its distribution. A modifying influence i. s exerted by the influx of fresh... Classification and Distribution of Sediment Types Anomalous Areas CONDITIONS OF SEDIMENTATION Bathymetry Signifioance of Parameter Distribution Patterns Marginal areas Central bay Marginal embayments . ~ Environments of Deposition . CONCLUSIONS...

Siegert, Rudolf B

2012-06-07T23:59:59.000Z

Note: This page contains sample records for the topic "zinc oxide upper" from the National Library of EnergyBeta (NLEBeta).
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181

Transient fluctuations of intracellular zinc ions in cell proliferation  

SciTech Connect (OSTI)

Zinc is essential for cell proliferation, differentiation, and viability. When zinc becomes limited for cultured cells, DNA synthesis ceases and the cell cycle is arrested. The molecular mechanisms of actions of zinc are believed to involve changes in the availability of zinc(II) ions (Zn{sup 2+}). By employing a fluorescent Zn{sup 2+} probe, FluoZin-3 acetoxymethyl ester, intracellular Zn{sup 2+} concentrations were measured in undifferentiated and in nerve growth factor (NGF)-differentiated rat pheochromocytoma (PC12) cells. Intracellular Zn{sup 2+} concentrations are pico- to nanomolar in PC12 cells and are higher in the differentiated than in the undifferentiated cells. When following cellular Zn{sup 2+} concentrations for 48 h after the removal of serum, a condition that is known to cause cell cycle arrest, Zn{sup 2+} concentrations decrease after 30 min but, remarkably, increase after 1 h, and then decrease again to about one half of the initial concentration. Cell proliferation, measured by an MTT [3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide] assay, decreases after both serum starvation and zinc chelation. Two peaks of Zn{sup 2+} concentrations occur within one cell cycle: one early in the G1 phase and the other in the late G1/S phase. Thus, fluctuations of intracellular Zn{sup 2+} concentrations and established modulation of phosphorylation signaling, via an inhibition of protein tyrosine phosphatases at commensurately low Zn{sup 2+} concentrations, suggest a role for Zn{sup 2+} in the control of the cell cycle. Interventions targeted at these picomolar Zn{sup 2+} fluctuations may be a way of controlling cell growth in hyperplasia, neoplasia, and diseases associated with aberrant differentiation.

Li, Yuan [Division of Human Nutrition, Department of Preventive Medicine and Community Health, The University of Texas Medical Branch, Galveston, TX 77555 (United States)] [Division of Human Nutrition, Department of Preventive Medicine and Community Health, The University of Texas Medical Branch, Galveston, TX 77555 (United States); Maret, Wolfgang, E-mail: womaret@utmb.edu [Division of Human Nutrition, Department of Preventive Medicine and Community Health, The University of Texas Medical Branch, Galveston, TX 77555 (United States) [Division of Human Nutrition, Department of Preventive Medicine and Community Health, The University of Texas Medical Branch, Galveston, TX 77555 (United States); Department of Anesthesiology, The University of Texas Medical Branch, Galveston, TX 77555 (United States)

2009-08-15T23:59:59.000Z

182

Application of Developed APCVD Transparent Conducting Oxides and Undercoat Technologies for Economical OLED Lighting  

SciTech Connect (OSTI)

Economics is a key factor for application of organic light emitting diodes (OLED) in general lighting relative to OLED flat panel displays that can handle high cost materials such as indium tin oxide (ITO) or Indium zinc oxide (IZO) as the transparent conducting oxide (TCO) on display glass. However, for OLED lighting to penetrate into general illumination, economics and sustainable materials are critical. The issues with ITO have been documented at the DOE SSL R&D and Manufacturing workshops for the last 5 years and the issue is being exaserbated by export controls from China (one of the major sources of elemental indium). Therefore, ITO is not sustainable because of the fluctuating costs and the United States (US) dependency on other nations such as China. Numerous alternatives to ITO/IZO are being evaluated such as Ag nanoparticles/nanowires, carbon nanotubes, graphene, and other metal oxides. Of these other metal oxides, doped zinc oxide has attracted a lot of attention over the last 10 years. The volume of zinc mined is a factor of 80,000 greater than indium and the US has significant volumes of zinc mined domestically, resulting in the ability for the US to be self-sufficient for this element that can be used in optoelectonic applications. The costs of elemental zinc is over 2 orders of magnitude less than indium, reflecting the relative abundance and availablility of the elements. Arkema Inc. and an international primary glass manufacturing company, which is located in the United States, have developed doped zinc oxide technology for solar control windows. The genesis of this DOE SSL project was to determine if doped zinc oxide technology can be taken from the commodity based window market and translate the technology to OLED lighting. Thus, Arkema Inc. sought out experts, Philips Lighting, Pacific Northwest National Laboratories (PNNL) and National Renewable Research Laboratories (NREL), in OLED devices and brought them into the project. This project had a clear focus on economics and the work plan focused both on doped ZnO process and OLED device structure that would be consistent with the new TCO. The team successfully made 6 inch OLEDs with a serial construction. More process development is required to optimize commercial OLED structures. Feasibility was demonstrated on two different light extraction technologies: 1/4 lambda refractive index matching and high-low-high band pass filter. Process development was also completed on the key precursors for the TCO, which are ready for pilot-plant scale-up. Subsequently, Arkema has developed a cost of ownership model that is consistent with DOE SSL R&D Manufacturing targets as outlined in the DOE SSL R&D Manufacturing 2010 report. The overall outcome of this project was the demonstration that doped zinc oxide can be used for OLED devices without a drop-off in performance while gaining the economic and sustainable benefits of a more readily available TCO. The broad impact of this project, is the facilitation of OLED lighting market penetration into general illumination, resulting in significant energy savings, decreased greenhouse emissions, with no environmental impact issues such as mercury found in Fluorescent technology.

Gary Silverman; Bluhm, Martin; Coffey, James; Korotkov, Roman; Polsz, Craig; Salemi, Alexandre; Smith, Robert; Smith, Ryan; Stricker, Jeff; Xu,Chen; Shirazi, Jasmine; Papakonstantopulous, George; Carson, Steve Philips Lighting GmbH Goldman, Claudia; Hartmann, Sören; Jessen, Frank; Krogmann, Bianca; Rickers, Christoph; Ruske, Manfred, Schwab, Holger; Bertram, Dietrich

2011-01-02T23:59:59.000Z

183

Application of Developed APCVD Transparent Conducting Oxides and Undercoat Technologies for Economical OLED Lighting  

SciTech Connect (OSTI)

Economics is a key factor for application of organic light emitting diodes (OLED) in general lighting relative to OLED flat panel displays that can handle high cost materials such as indium tin oxide (ITO) or Indium zinc oxide (IZO) as the transparent conducting oxide (TCO) on display glass. However, for OLED lighting to penetrate into general illumination, economics and sustainable materials are critical. The issues with ITO have been documented at the DOE SSL R&D and Manufacturing workshops for the last 5 years and the issue is being exacerbated by export controls from China (one of the major sources of elemental indium). Therefore, ITO is not sustainable because of the fluctuating costs and the United States (US) dependency on other nations such as China. Numerous alternatives to ITO/IZO are being evaluated such as Ag nanoparticles/nanowires, carbon nanotubes, graphene, and other metal oxides. Of these other metal oxides, doped zinc oxide has attracted a lot of attention over the last 10 years. The volume of zinc mined is a factor of 80,000 greater than indium and the US has significant volumes of zinc mined domestically, resulting in the ability for the US to be self-sufficient for this element that can be used in optoelectronic applications. The costs of elemental zinc is over 2 orders of magnitude less than indium, reflecting the relative abundance and availability of the elements. Arkema Inc. and an international primary glass manufacturing company, which is located in the United States, have developed doped zinc oxide technology for solar control windows. The genesis of this DOE SSL project was to determine if doped zinc oxide technology can be taken from the commodity based window market and translate the technology to OLED lighting. Thus, Arkema Inc. sought out experts, Philips Lighting, Pacific Northwest National Laboratories (PNNL) and National Renewable Research Laboratories (NREL), in OLED devices and brought them into the project. This project had a clear focus on economics and the work plan focused both on doped ZnO process and OLED device structure that would be consistent with the new TCO. The team successfully made 6 inch OLEDs with a serial construction. More process development is required to optimize commercial OLED structures. Feasibility was demonstrated on two different light extraction technologies: 1/4 lambda refractive index matching and high-low-high band pass filter. Process development was also completed on the key precursors for the TCO, which are ready for pilot-plant scale-up. Subsequently, Arkema has developed a cost of ownership model that is consistent with DOE SSL R&D Manufacturing targets as outlined in the DOE SSL R&D Manufacturing 2010 report. The overall outcome of this project was the demonstration that doped zinc oxide can be used for OLED devices without a drop-off in performance while gaining the economic and sustainable benefits of a more readily available TCO. The broad impact of this project, is the facilitation of OLED lighting market penetration into general illumination, resulting in significant energy savings, decreased greenhouse emissions, with no environmental impact issues such as mercury found in Fluorescent technology. The primary objective of this project was to develop a commercially viable process for 'Substrates' (Substrate/ undercoat/ TCO topcoat) to be used in production of OLED devices (lamps/luminaries/modules). This project focused on using Arkema's recently developed doped ZnO technology for the Fenestration industry and applying the technology to the OLED lighting industry. The secondary objective was the use of undercoat technology to improve light extraction from the OLED device. In optical fields and window applications, technology has been developed to mitigate reflection losses by selecting appropriate thicknesses and refractive indices of coatings applied either below or above the functional layer of interest. This technology has been proven and implemented in the fenestration industry for more than 15 years. Successful completion of

Martin Bluhm; James Coffey; Roman Korotkov; Craig Polsz; Alexandre Salemi; Robert Smith; Ryan Smith; Jeff Stricker; Chen Xu; Jasmine Shirazi; George Papakonstantopulous; Steve Carson; Claudia Goldman; Soren Hartmann; Frank Jessen; Bianca Krogmann; Christoph Rickers; Manfred Ruske; Holger Schwab; Dietrich Bertram

2011-01-02T23:59:59.000Z

184

A quantum cascade laser fabricated using planar native-oxide layers C. D. Farmera)  

E-Print Network [OSTI]

of quantum cascade lasers. The native oxide of the Al0.48In0.52As upper cladding layer was formed and usedA quantum cascade laser fabricated using planar native-oxide layers C. D. Farmera) Department to provide electrical and optical confinement for lasers operating at 5 m. Initial results include 1.4 W peak

185

Dispersion relation for magnetosonic waves within the upper atmospheric plasma  

Science Journals Connector (OSTI)

The dispersion relation for magnetosonic waves within the upper atmospheric plasma has been derived. The result can be...

S. S. De; Bithika Ghosh; Manasi Mal; B. Ghosh

1990-01-01T23:59:59.000Z

186

Upper bounds on the photon mass  

SciTech Connect (OSTI)

The effects of a nonzero photon rest mass can be incorporated into electromagnetism in a simple way using the Proca equations. In this vein, two interesting implications regarding the possible existence of a massive photon in nature, i.e., tiny alterations in the known values of both the anomalous magnetic moment of the electron and the gravitational deflection of electromagnetic radiation, are utilized to set upper limits on its mass. The bounds obtained are not as stringent as those recently found; nonetheless, they are comparable to other existing bounds and bring new elements to the issue of restricting the photon mass.

Accioly, Antonio [Laboratorio de Fisica Experimental (LAFEX), Centro Brasileiro de Pesquisas Fisicas (CBPF), Rua Dr. Xavier Sigaud 150, Urca, 22290-180, Rio de Janeiro, RJ (Brazil); Group of Field Theory from First Principles, Sao Paulo State University (UNESP), Rua Dr. Bento Teobaldo Ferraz 271, Bl. II-Barra Funda, 01140-070 Sao Paulo, SP (Brazil); Instituto de Fisica Teorica (IFT), Sao Paulo State University (UNESP), Rua Dr. Bento Teobaldo Ferraz 271, Bl. II-Barra Funda, 01140-070 Sao Paulo, SP (Brazil); Helayeel-Neto, Jose [Laboratorio de Fisica Experimental (LAFEX), Centro Brasileiro de Pesquisas Fisicas (CBPF), Rua Dr. Xavier Sigaud 150, Urca, 22290-180, Rio de Janeiro, RJ (Brazil); Group of Field Theory from First Principles, Sao Paulo State University (UNESP), Rua Dr. Bento Teobaldo Ferraz 271, Bl. II-Barra Funda, 01140-070 Sao Paulo, SP (Brazil); Scatena, Eslley [Instituto de Fisica Teorica (IFT), Sao Paulo State University (UNESP), Rua Dr. Bento Teobaldo Ferraz 271, Bl. II-Barra Funda, 01140-070 Sao Paulo, SP (Brazil); Group of Field Theory from First Principles, Sao Paulo State University (UNESP), Rua Dr. Bento Teobaldo Ferraz 271, Bl. II-Barra Funda, 01140-070 Sao Paulo, SP (Brazil)

2010-09-15T23:59:59.000Z

187

Upper Cumberland EMC - Energy Efficiency Rebate Programs | Department of  

Broader source: Energy.gov (indexed) [DOE]

Upper Cumberland EMC - Energy Efficiency Rebate Programs Upper Cumberland EMC - Energy Efficiency Rebate Programs Upper Cumberland EMC - Energy Efficiency Rebate Programs < Back Eligibility Commercial Construction Residential Savings Category Heating & Cooling Home Weatherization Construction Commercial Weatherization Commercial Heating & Cooling Design & Remodeling Heat Pumps Appliances & Electronics Water Heating Program Info State Tennessee Program Type Utility Rebate Program Rebate Amount Residential Heat Pump: $150 per unit Commercial Heat Pump: $150 per three tons Water Heater: $100 Provider Upper Cumberland Electric Membership Corporation Upper Cumberland Electric Membership Corporation (UCEMC), in collaboration with the Tennessee Valley Authority, offers incentives for its customers to purchase and install energy efficient equipment through the Energy Right

188

Bulk and Surface Structures of Palladium-Modified Copper?Zinc Oxides ex Hydroxycarbonate Precursors  

Science Journals Connector (OSTI)

The lower Na concentration used during the synthesis of the materials CZ and PCZ-SP favors the development of an aurichalcite phase, a structure in which the Cu and Zn are atomically dispersed in a hydroxycarbonate matrix. ... 2-4 This procedure leads to the formation of several mixed metal hydroxycarbonates such as aurichalcite, (Cu,Zn)5(CO3)2(OH)6, zincian?malachite (or rosasite), (Cu,Zn)2(OH)2CO3, and a Cu?Zn hydrotalcite-like phase (Cu,Zn)6Al2(OH)16CO3·4H2O. ... The XRD pattern provides evidence for the presence of both hydrozincite and aurichalcite phases. ...

I. Melián-Cabrera; M. López Granados; J. L. G. Fierro

2002-03-27T23:59:59.000Z

189

Growth Mechanisms of Vertically-aligned Carbon, Boron Nitride, and Zinc Oxide Nanotubes  

SciTech Connect (OSTI)

Nanotubes are one-dimensional nanomaterials with all atoms located near the surface. This article provides a brief review on the possible growth mechanisms of a series of inorganic nanotubes, in particular, vertically-aligned (VA) carbon nanotubes (CNTs), boron nitride nanotubes (BNNTs), and ZnO nanotubes (ZnO NTs).

Yap, Yoke Khin [Department of Physics, Michigan Technological University, 118 Fisher Hall, 1400 Townsend Drive, Houghton, MI 49931 (United States)

2009-07-07T23:59:59.000Z

190

Physica B 340342 (2003) 221224 Infrared spectroscopy of hydrogen in annealed zinc oxide  

E-Print Network [OSTI]

be an important element in the growth and processing of n-type ZnO. In addition to hydrogen donors, hydrogen with a Bomem DA8 vacuum Fourier transform spectrometer (FTIR) with a KBr beamsplitter. The measurements.1016/j.physb.2003.09.023 #12;1 3 atm D2 along with a ZnO powder paste (allowed to dry under vacuum) made

McCluskey, Matthew

191

Theoretical model for methanol formation from CO and H/sub 2/ on zinc oxide surfaces  

SciTech Connect (OSTI)

Models are developed for the polar (0001) and nonpolar (1010) surfaces of ZnO in order to consider methanol formation from adsorbed carbon monoxide and hydrogen atoms. The heats of adsorption of H/sub x/CO and OH/sub x/CO (x = 0-3) species involved in methanol formation are computed to determine the enthalpy changes of reaction. Reaction sequences involving formyl or formate intermediates are considered. The reaction mechanism is catalyzed by the Cu/sup +/ to proceed through a methoxy intermediate on Cu/sup +//ZnO with a lower of the energy pathway. The ZnO surfaces are poor donors and function primarily as acceptors of electron density from CO. The donor role of Cu/sup +/ is demonstrated on the polar surface by increasing the heat of adsorption of acceptor adspecies and decreasing the heat of adsorption of donor adspecies. 22 references, 8 figures, 4 tables.

Baetzold, R.C.

1985-09-12T23:59:59.000Z

192

Design of Zinc Oxide Based Solid-State Excitonic Solar Cell with Improved Efficiency  

E-Print Network [OSTI]

Excitonic photovoltaic devices, including organic, hybrid organic/inorganic, and dye-sensitized solar cells, are attractive alternatives to conventional inorganic solar cells due to their potential for low cost and low temperature solution...

Lee, Tao Hua

2012-02-14T23:59:59.000Z

193

Zinc Oxide Nanomaterials as Amylase Inhibitors and for Water Pollution Control  

Science Journals Connector (OSTI)

These agents inhibit alpha amylases. Alpha amylases are major digestive enzymes in animals/humans which play key role in breaking down long-chain carbohydrates polysaccharide starch, a major sugar obtained from d...

Rohini Kitture; Sandip Dhobale; S. N. Kale

2014-01-01T23:59:59.000Z

194

Searching Room Temperature Ferromagnetism in Wide Gap Semiconductors Fe-doped Strontium Titanate and Zinc Oxide  

E-Print Network [OSTI]

Scientic findings in the very beginning of the millennium are taking us a step further in the new paradigm of technology: spintronics. Upgrading charge-based electronics with the additional degree of freedom of the carriers spin-state, spintronics opens a path to the birth of a new generation of devices with the potential advantages of non-volatility and higher processing speed, integration densities and power efficiency. A decisive step towards this new age lies on the attribution of magnetic properties to semiconductors, the building block of today's electronics, that is, the realization of ferromagnetic semiconductors (FS) with critical temperatures above room temperature. Unfruitful search for intrinsic RT FS lead to the concept of Dilute(d) Magnetic Semiconductors (DMS): ordinary semiconductor materials where 3 d transition metals randomly substitute a few percent of the matrix cations and, by some long-range mechanism, order ferromagnetically. The times are of intense research activity and the last few ...

Pereira, LMC; Wahl, U

195

Motexafin Gadolinium and Zinc Induce Oxidative Stress Responses and Apoptosis in B-Cell Lymphoma Lines  

Science Journals Connector (OSTI)

...001 1.1 0.403 1.3 0.104 3.6 0.012 4763 NF1 Neurofibromin 1 1.7 0.000 1.4 0.001 1.2 0.154 1.4 0.001 9975 NR1D2 Nuclear receptor subfamily 1, group D, member 2 3.7 0.001 1.2 0.163 1.2 0.157 2.8 0.000 8554 PIAS1 Protein...

Philip S. Lecane; Mazen W. Karaman; Mint Sirisawad; Louie Naumovski; Richard A. Miller; Joseph G. Hacia; Darren Magda

2005-12-15T23:59:59.000Z

196

Zinc Oxide Nanowires Low-Temperature Wafer-Scale Production of  

E-Print Network [OSTI]

- tions in solar energy conversion, light emission, and other promising areas. Solution approaches to Zn and provide a continuous pathway for carrier transport, an important feature for future electronic devices

Yang, Peidong

197

Preparation and characterization of indium zinc oxide thin films by electron beam evaporation technique  

SciTech Connect (OSTI)

In this work, the preparation of In{sub 2}O{sub 3}-ZnO thin films by electron beam evaporation technique on glass substrates is reported. Optical and electrical properties of these films were investigated. The effect of dopant amount and annealing temperature on the optical and electrical properties of In{sub 2}O{sub 3}-ZnO thin films was also studied. Different amount of ZnO was used as dopant and the films were annealed at different temperature. The results showed that the most crystalline, transparent and uniform films with lowest resistivity were obtained using 25 wt% of ZnO annealed at 500 {sup o}C.

Keshavarzi, Reza [Chemistry Department, Catalysis Division, University of Isfahan, Isfahan 81746-73441 (Iran, Islamic Republic of)] [Chemistry Department, Catalysis Division, University of Isfahan, Isfahan 81746-73441 (Iran, Islamic Republic of); Mirkhani, Valiollah, E-mail: mirkhani@sci.ui.ac.ir [Chemistry Department, Catalysis Division, University of Isfahan, Isfahan 81746-73441 (Iran, Islamic Republic of)] [Chemistry Department, Catalysis Division, University of Isfahan, Isfahan 81746-73441 (Iran, Islamic Republic of); Moghadam, Majid, E-mail: moghadamm@sci.ui.ac.ir [Chemistry Department, Catalysis Division, University of Isfahan, Isfahan 81746-73441 (Iran, Islamic Republic of) [Chemistry Department, Catalysis Division, University of Isfahan, Isfahan 81746-73441 (Iran, Islamic Republic of); Department of Nanotechnology Engineering, University of Isfahan, Isfahan 81746-73441 (Iran, Islamic Republic of); Tangestaninejad, Shahram; Mohammadpoor-Baltork, Iraj [Chemistry Department, Catalysis Division, University of Isfahan, Isfahan 81746-73441 (Iran, Islamic Republic of)] [Chemistry Department, Catalysis Division, University of Isfahan, Isfahan 81746-73441 (Iran, Islamic Republic of); Fallah, Hamid Reza; Dastjerdi, Mohammad Javad Vahid; Modayemzadeh, Hamed Reza [Department of Physics, University of Isfahan, Isfahan 81746-73441 (Iran, Islamic Republic of)] [Department of Physics, University of Isfahan, Isfahan 81746-73441 (Iran, Islamic Republic of)

2011-04-15T23:59:59.000Z

198

Zinc levels in hair of pre-adolescent females  

E-Print Network [OSTI]

. , and. Hart, E. B. (1934) Am. J. Physiol. ~10 , 146 10. Tucker, H. F. , and Salmon, W. D. (1955) Proc. Soc. Exp. Biol. Med. 88, 613 11. Keilin, D. , and. Mann, T. (1939) Nature (London) 144, 442 12. Orten, J. M. (1966) in Zinc Metabolism (Prasad. A... TABLE A-2 Standard Curve II ? 1974 Samples Zinc ml fo abs o ti on 10X scale 0. 25 0. 50 0 75 1. 0 25 0. 40 0. 9 1. 35 1. 75 3. &5 7 ' 5 10. 0 6. 9 20. 0 extrapolated 7. 0 g. O O 4 50 )0 3. 0 I. O 2. 0 4. 0 6. 0 8. 0 IO. O 12. 0 I...

Earp, Cheryl Fricke

1978-01-01T23:59:59.000Z

199

Asphalt Oxidation Kinetics and Pavement Oxidation Modeling  

E-Print Network [OSTI]

Most paved roads in the United States are surfaced with asphalt. These asphalt pavements suffer from fatigue cracking and thermal cracking, aggravated by the oxidation and hardening of asphalt. This negative impact of asphalt oxidation on pavement...

Jin, Xin

2012-07-16T23:59:59.000Z

200

Characterization of polyacrylic acid modified zinc phosphate crystal conversion coatings  

SciTech Connect (OSTI)

Raman spectroscopy and atomic force microscopy have been used to investigate the composition and surface structure of polyacrylic acid modified zinc phosphate crystal conversion coatings on steel. Zinc phosphate coatings are used extensively to provide corrosion protection and to improve adherence of top coatings to steel. Within the last few years it has been demonstrated that addition of high molecular weight polyacrylic acid (PAA) to the phosphating bath can significantly improve both resistance to corrosion and topcoat adherence. It has been reported that the addition of PAA reduces the size of crystallites, which leads to greater film ductility, and therefore to fewer sites for corrosive attack, and that organic molecular segments from the PAA are incorporated into the surface structure and provide additional adhesive bonding with polymeric topcoats. In this work Raman spectra show the compositions of both unmodified and PAA modified films to be zinc phosphate dihydrate, Zn[sub 3](PO[sub 4])[sub 2] [times] 2H[sub 2]O. Atomic force microscopy (AFM) was used to measure the morphologies of single crystallite surfaces. Morphologies of the unmodified and modified films obtained by AFM are in general quite similar, but subtle differences are apparent.

Wragg, J.L.; Chamberlain, J.E.; Chann, L.; White, H.W. (Univ. of Missouri, Columbia, MO (United States). Dept. of Physics and Astronomy); Sugama, T. (Brookhaven National Lab., Upton, NY (United States). Energy Efficiency and Conservation Div.); Manalis, S. (Digital Instruments, Inc., Santa Barbara, CA (United States))

1993-11-05T23:59:59.000Z

Note: This page contains sample records for the topic "zinc oxide upper" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

The effect of dietary zinc on the hypothalamo-adenohypophyseal-thyroid axis of male broiler chickens  

E-Print Network [OSTI]

and nonpregnant women consume a diet that contains 15 mg zinc per day (25). Intake of zinc in the United States typically ranges from 8-12 mg per day (2). Thus, some scientists have concluded that the recommended dietary allowance (RDA) for zinc is too high... cell response to available testosterone (12). Basal serum levels of LH and FSH did not differ among the treatment groups, however, zinc-deficient rats had a significantly enhanced gonadotropin (FSH and LH) response compared with all three control...

Dean, Carlton E.

1990-01-01T23:59:59.000Z

202

Flexographically Printed Rechargeable Zinc-based Battery for Grid Energy Storage  

E-Print Network [OSTI]

Integration with photovoltaic cells: Research on integrationpower harvesting using photovoltaic cells for lower-powerof printable photovoltaic cell, zinc-based battery as well

Wang, Zuoqian

2013-01-01T23:59:59.000Z

203

E-Print Network 3.0 - ambient air zinc Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Summary: nanoparticles have a range of potential applications in electronic, optoelectronic and spintronic devices. Zinc... , reflection and electrical properties of the...

204

STUDIES OF MICROMORPHOLOGY AND CURRENT EFFICIENCY OF ZINC ELECTRODEPOSITED FROM FLOWING CHLORIDE ELECTROLYTES  

E-Print Network [OSTI]

zinc and chloride by atomic absorption by the spectroscopy.College The atomic absorption spectroscopy was performed ofrandom error is about atomic absorption spectroscopy. Many

Mc Vay, L.

2011-01-01T23:59:59.000Z

205

Upper Peninsula Power Co | Open Energy Information  

Open Energy Info (EERE)

Peninsula Power Co Peninsula Power Co Jump to: navigation, search Name Upper Peninsula Power Co Place Michigan Utility Id 19578 Utility Location Yes Ownership I NERC Location RFC NERC RFC Yes Operates Generating Plant Yes Activity Generation Yes Activity Buying Transmission Yes Activity Distribution Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] Energy Information Administration Form 826[2] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png A-1 - Residential Seasonal Service Power Supply Service Residential A-1 - Residential Service Seasonal Residential A-2 - Residential Service Seasonal Residential Capacity Buyback Rider CP-IB

206

Thermo-Oxidation of Tokamak Carbon Dust  

SciTech Connect (OSTI)

The oxidation of dust and flakes collected from the DIII-D tokamak, and various commercial dust specimens, has been measured at 350 ºC and 2.0 kPa O2 pressure. Following an initial small mass loss, most of the commercial dust specimens showed very little effect due to O2 exposure. Similarly, dust collected from underneath DIII-D tiles, which is thought to comprise largely Grafoil™ particulates, also showed little susceptibility to oxidation at this temperature. However, oxidation of the dust collected from tile surfaces has led to ~ 18% mass loss after 8 hours; thereafter, little change in mass was observed. This suggests that the surface dust includes some components of different composition and/or structure – possibly fragments of codeposited layers. The oxidation of codeposit flakes scraped form DIII-D upper divertor tiles showed an initial 25% loss in mass due to heating in vacuum, and the gradual loss of 30-38% mass during the subsequent 24 hours exposure to O2. This behavior is significantly different from that observed for the oxidation of thinner DIII-D codeposit specimens which were still adhered to tile surfaces, and this is thought to be related to the low deuterium content (D/C ~ 0.03 – 0.04) of the flakes.

J.W. Davis; B.W.N. Fitzpatrick; J.P. Sharpe; A.A. Haasz

2008-04-01T23:59:59.000Z

207

ITP Mining: Energy and Environmental Profile of the U.S. Mining Industry: Chapter 6: Lead and Zinc  

Broader source: Energy.gov (indexed) [DOE]

6 6 Lead and Zinc Lead and zinc ores are usually found together with gold and silver. A lead-zinc ore may also contain lead sulfide, zinc sulfide, iron sulfide, iron carbonate, and quartz. When zinc and lead sulfides are present in profitable amounts they are regarded as ore minerals. The remaining rock and minerals are called gangue. Forms of Lead and Zinc Ore The two principal minerals containing lead and zinc are galena and sphalerite. These two minerals are frequently found together along with other sulfide minerals, but one or the other may be predominant. Galena may contain small amounts of impurities including the precious metal silver, usually in the form of a sulfide. When silver is present in sufficient quantities, galena is regarded as a silver ore and called argentiferous galena. Sphalerite is zinc sulfide, but

208

Effect of zinc salt on transport, structural, and thermal properties of PEG-based polymer electrolytes for battery application  

Science Journals Connector (OSTI)

Solid polymer polyethylene glycol (PEG)-based electrolytes composed with zinc acetate Zn(CH3COO)2...have been prepared by using solution blending. We proposed a scheme of PEG–zinc acetate for battery application....

Anji Reddy Polu; Ranveer Kumar; Girish M. Joshi

2014-05-01T23:59:59.000Z

209

Characterization of a geothermal system in the Upper Arkansas...  

Open Energy Info (EERE)

Paper: Characterization of a geothermal system in the Upper Arkansas Valley Authors T. Blum, K. van Wijk, L. Liberty, M. Batzle, R. Krahenbuhl, A. Revil and R. Reynolds...

210

Upper crustal structure of an obliquely extending orogen, central...  

Open Energy Info (EERE)

eastern California Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Proceedings: Upper crustal structure of an obliquely extending orogen, central...

211

Schlumberger soundings in the Upper Raft River and Raft River...  

Open Energy Info (EERE)

Schlumberger soundings in the Upper Raft River and Raft River Valleys, Idaho and Utah Abstract In 1975, the U.S. Geological Survey made seventy Schlumberger resistivity...

212

July 2012 | ucsf global health sciences stuDent Policy brief | scaling uP oral rehyDration salts anD zinc Scaling up oral rehydration salts and zinc to  

E-Print Network [OSTI]

and zinc in Bangladesh, Nepal, and Tanzania.5 The Scaling Up of Zinc for Young Children (SUZY) Project.wpro.who.int/ internet/resources.ashx/CHD/docs/ENAcute_Diarrhoea_reprint.pdf. 3. Every Woman, Every Child. Zinc- hood diarrhoea in Bangladesh:

Klein, Ophir

213

(Data in thousand metric tons of zinc content, unless noted) Domestic Production and Use: The value of zinc mined in 1995 was about $700 million. Essentially all came from  

E-Print Network [OSTI]

188 ZINC (Data in thousand metric tons of zinc content, unless noted) Domestic Production and Use were used principally by the agricultural, chemical, paint, and rubber industries. Major coproducts--United States: 1991 1992 1993 1994 1995e Production: Mine, recoverable 518 523 488 570 600 Primary slab zinc 253

214

(Data in thousand metric tons of zinc content, unless otherwise noted) Domestic Production and Use: The value of zinc mined in 1996 was about $800 million. Essentially all came from  

E-Print Network [OSTI]

190 ZINC (Data in thousand metric tons of zinc content, unless otherwise noted) Domestic Production were used principally by the agricultural, chemical, paint, and rubber industries. Major coproducts--United States: 1992 1993 1994 1995 1996e Production: Mine, recoverable 523 488 570 614 6201 Primary slab zinc

215

Zinc and Magnesium in Human Prostate Gland: Normal, Hyperplastic, and Neoplastic  

Science Journals Connector (OSTI)

...hyperplastic gland. In addition, there was a marked...through a mixed-bed ion-exchange resin. All zinc and magnesium...plastic gland. In addition, there was a marked...S. Histochemi cal Demonstration of Zinc in the Dorsolateral...

Ferenc Györkey; Kyung-Whan Min; James A. Huff; and Phyllis Györkey

1967-08-01T23:59:59.000Z

216

pH dependence and compartmentalization of zinc transported across plasma membrane of rat cortical neurons  

E-Print Network [OSTI]

pH dependence and compartmentalization of zinc transported across plasma membrane of rat corticalH dependence and compartmental- ization of zinc transported across plasma membrane of rat cortical neurons. Am; ion transport; transition elements; primary culture IT IS KNOWN THAT Zn2 can enter neurons by two

217

MAGNESIUM AND ZINC BLOOD LEVELS IN MICE SENSITIVE TO AUDIOGENIC SEIZURES  

E-Print Network [OSTI]

MAGNESIUM AND ZINC BLOOD LEVELS IN MICE SENSITIVE TO AUDIOGENIC SEIZURES J.G. HENROTTE G. FRANCK., 1973 ; Durlach, 1976). Thus, it seemed of interest to study the zinc and magnesium levels in the blood the animals contained 2 % of a mineral mixture composed of magnesium hydroxide (13.8 %), Ca diphosphate (70

Paris-Sud XI, Université de

218

Integrated Solar Upper Stage (ISUS) mission trades  

SciTech Connect (OSTI)

Solar thermal propulsion and propulsion/power systems were recently identified as key technologies in the Operational Effectiveness and Cost Comparison Study (OECS) sponsored by Phillips Laboratory (PL). These technologies were found to be pervasively cost effective with short transfer times and very good performance across a wide range of missions. The on-going Integrated Solar Upper Stage (ISUS) Program sponsored by PL represents development of a solar thermal propulsion/power (bimodal) system. As part of this effort, mission trades are being conducted to further define the ISUS system for geosynchronous equatorial orbit (GEO), high Earth orbit (HEO-Molniya class), and mid Earth orbit (MEO-GPS class) missions. These trades will consider launch vehicles ranging in size from a LLV3 to an Atlas IIAS that insert the ISUS into low Earth orbit (LEO). These trades will be used to define the ISUS system for the planned Engine Ground Demonstration, a space demonstration mission, and as a future operational system.

Frye, P. [Rockwell Aerospace, Canoga Park, CA (United States). Rocketdyne Div.

1996-12-31T23:59:59.000Z

219

Effects of zinc on Salmonella in the layer house environments and laying hens, and the ability of zinc to induce molt in laying hens  

E-Print Network [OSTI]

environments, and its ability to induce a molt in single comb white leghorn hens. In part, the antibacterial properties of zinc may reduce environmental contamination in a poultry house by interrupting airborne routes. The first phase involved detecting...

Park, Shinyoung

2005-02-17T23:59:59.000Z

220

The Interactions of Zinc Thiolate Complexes and Exogenous Metal Species: Investigations of Thiolate Bridging and Metal Exchange  

E-Print Network [OSTI]

formation and zinc displacement. To study such possible interactions between zinc finger proteins and platinum-bound DNA, the ZnN2S2 dimeric complex, N,N?-bis(2- mercaptoethyl)-1,4-diazacycloheptane zinc (II), [Zn-1?]2, has been examined for Znbound thiolate...

Almaraz, Elky

2010-07-14T23:59:59.000Z

Note: This page contains sample records for the topic "zinc oxide upper" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

Oxidation of propylene over copper oxide catalysts  

E-Print Network [OSTI]

to the study of propylene oxidation. Dunlop (17) reported that small quantities of iron compounds substantially enhanced the catalytic activity of chromia-alumina catalysts with respect to propylene oxidation, Woodharn (72) has suggested that under... between 360 C and 430oC the rate of propane oxidation decreases as the teznperature is increased, and the rate of conversion to olefins, especially propylene, becomes progressively greater. Above 430 C the proportion of propane converted to ethylene in...

Billingsley, David Stuart

2012-06-07T23:59:59.000Z

222

Diversity in the upper management of leading Texas contractors  

E-Print Network [OSTI]

of the overall sample, Gender, Position, or Ethnicity categories. It was found that the Ethnic make up of upper management is not representative of the Ethnic make up of the Texas or national construction workforces, while the Gender make up of upper management...

Lawrence, Anne Nicole

2003-01-01T23:59:59.000Z

223

Managing Upper extremity Fx's Sweden 10-Managing Pediatric  

E-Print Network [OSTI]

Managing Upper extremity Fx's Sweden 10- 05 1 Managing Pediatric Fractures Andrew Pennock, M extremity Fx's Sweden 10- 05 2 Children Are Not Miniature Adults! · Open Growth Plates · Remodeling is Changing "Citius, Altius, Fortius" - Faster, Higher, Stronger #12;Managing Upper extremity Fx's Sweden 10

Squire, Larry R.

224

Induced Positron Annihiliation Investigation of Cadmium Zinc Telluride Crystal Microstructures  

SciTech Connect (OSTI)

Cadmium-Zinc-Telluride (CZT) crystals are used in semiconductor radiation detectors for the detection of x-ray and gamma radiation. However, production of detector grade crystals is difficult as small variations in compositional uniformity and primarily the zinc content can significantly affect the ability of the CZT crystal to function as a radiation detector. Currently there are no known nondestructive methods that can be used to identify detector grade crystals. The current test method is to fabricate and test the detector to determine if the crystal is sufficiently uniform and of the correct composition to be considered a detector grade crystal. Consequently, nondestructive detection methods are needed to identify detector grade crystals prior to the fabrication process. The purpose of this feasibility study was to perform a preliminary assessment of the ability of several new, nondestructive technologies based on Induced Positron Annihilation (IPA) to determine if detector grade CZT crystals can be identified. Results of measurements performed on specimens from Fisk University and EV Products, Inc. indicate that both the near surface Distributed Source Positron Annihilation (up to 3 mm penetration) and the volumetric Photon Induced Positron Annihilation methods may be suitable for determining CZT crystal quality. Further work on CZT crystals with a broader range of compositions and detector characteristics is needed to provide a well defined, calibrated, method for assessing CZT crystal quality.

D. W. Akers

2005-06-01T23:59:59.000Z

225

Solid Oxide Fuel Cells  

Science Journals Connector (OSTI)

A Solid Oxide Fuel Cell (SOFC) is typically composed of two porous electrodes, interposed between an electrolyte made of a particular solid oxide ceramic material. The system originates from the work of Nernst...

Nigel M. Sammes; Roberto Bove; Jakub Pusz

2006-01-01T23:59:59.000Z

226

Paleotectonic controls on deposition of upper Upper Jurassic La Casita Formation, east-central Chihuahua, Mexico  

SciTech Connect (OSTI)

Surface mapping of the basal Mesozoic La Casita Formation (upper Upper Jurassic) in east-central Chihuahua, Mexico, indicates initial Mesozoic sedimentation occurred in a segmented, interconnected subbasin of the Chihuahua trough. La Casite Formation (1200 m thick) is a tectonostratigraphic unit resting with angular unconformity on the Lower Permian Plomosas Formation. It consists primarily of siliciclastic material with sporadic interbedded limestones. The dominant lithofacies, approximately 1000 m thick, consists of turbiditic sandstone units (10-20 m) alternating with thicker, monotonous shale sequences. In the mapped area (approximately 30 km/sup 2/), flute cast measurements indicate flows from both the northeast (N20/degree/E) and southwest (S58/degree/W). Turbiditic sandstone units appear to pinch out and/or interfinger as they extend from the north and south into the central portion of the area. The initial opening of the Chihuahua trough is often associated with Late Jurassic block faulting, related to development of the ancestral Gulf of Mexico. Synrift depositional sequences of a similar age have been described in southern Coahuila, northern Zacatecas, and western Chiapas, Mexico. The subbasin (graben ) examined here may be ascribed a paleoposition near the western edge of the early Chihuahua trough. The western boundary of the early trough may have comprised a series of these subbasins, forming a cuspate or serrated coastline. Late Jurassic ammonites recovered from this and other localities along the length of the Chihuahua trough suggest that the subbasins were interconnected by means of an eastern continuous seaway.

Roberts, D.C.

1989-03-01T23:59:59.000Z

227

The magnetic properties of the iron-rich, iron-nickel-zinc alloys  

E-Print Network [OSTI]

this density. The samples were again sealed in steel jackets with a 12 small amount of zinc to maintain the vapor pressure high enough to al- low the impregnated zinc to remain in the samples. The jacketed speci- 0 mens were heated to 1000 C for two hours.... This curve indicated that the coercive force is strongly affected by the zinc content of the al- loy. Fig, 12 is a plot of hardness against nickel content. The 10 w/o Zn al'loys gave the greatest hardness with low nickel content. As the nickel content...

Gupton, Paul Stephen

1961-01-01T23:59:59.000Z

228

Zn Sorption Mechanisms onto Sheathed Leptothrix Discophora and the Impact of the Nanoparticulate Biogenic Mn Oxide Coating  

SciTech Connect (OSTI)

Zinc sorption on sheathed Leptothrix discophora bacterium, the isolated extracellular polymeric substances (EPS) sheath, and Mn oxide-coated bacteria was investigated with macroscopic and spectroscopic techniques. Complexation with L. discophora was dominated by the outer membrane phosphoryl groups of the phospholipid bilayer while sorption to isolated EPS was dominated by carboxyl groups. Precipitation of nanoparticulate Mn oxide coatings on the cell surface increased site capacity by over twenty times with significant increase in metal sorption. XAS analysis of Zn sorption in the coated system showed Mn oxide phase contributions of 18 to 43% through mononuclear inner-sphere complexes. The coordination environments in coprecipitation samples were identical to those of sorption samples, indicating that, even in coprecipitation, Zn is not incorporated into the Mn oxide structure. Rather, through enzymatic oxidation by L. discophora, Mn(II) is oxidized and precipitated onto the biofilm providing a large surface for metal sequestration. The nanoparticulate Mn oxide coating exhibited significant microporosity (75%) suggesting contributions from intraparticle diffusion. Transient studies conducted over 7 months revealed a 170% increase in Zn loading. However, the intraparticle diffusivity of 10{sup -19} cm{sup 2} s{sup -1} is two orders of magnitude smaller than that for abiotic Mn oxide which we attribute to morphological changes such as reduced pore sizes in the nanoparticulate oxide. Our results demonstrate that the cell-bound Mn oxide particles can sorb significant amounts of Zn over long periods of time representing an important surface for sequestration of metal contaminants.

Boonfueng, T.; Axe, L; Yee, N; Hahn, D; Ndiba, P

2009-01-01T23:59:59.000Z

229

Zinc oxysulfide ternary alloy nanocrystals: A bandgap modulated photocatalyst  

SciTech Connect (OSTI)

Herein, we report a green economic route for the synthesis of a series of Zinc Oxysulfide (ZOS) (ZnO{sub 1-x}S{sub x}; 0 {<=} x {>=} 1; x = Sulfur) alloys nanoparticles. The crystallographic features of ZnO, ZOS, and ZnS confirmed by X-Ray Diffraction and validated by Transmission Electron Microscopy reveal the variation of lattice spacing in binary and ternary compositions with homogenous elemental distribution. The photocatalytic analysis of ZOS (0.4) is performed and compared with Degussa P25 to ascertain its photocatalytic activity against methyl orange under irradiation of 365 nm UV-Vis light. A bandgap of 2.7 eV for ZOS (0.4) aptly establishes its prospects for sunlight driven photocatalysis.

Pandey, Shiv K. [Department of Chemistry, MN National Institute of Technology, Allahabad (India) [Department of Chemistry, MN National Institute of Technology, Allahabad (India); Nanotechnology Application Centre, University of Allahabad, Allahabad (India); Pandey, Shipra; Pandey, Avinash C. [Nanotechnology Application Centre, University of Allahabad, Allahabad (India)] [Nanotechnology Application Centre, University of Allahabad, Allahabad (India); Mehrotra, G. K. [Department of Chemistry, MN National Institute of Technology, Allahabad (India)] [Department of Chemistry, MN National Institute of Technology, Allahabad (India)

2013-06-10T23:59:59.000Z

230

Study on thermal annealing of cadmium zinc telluride (CZT) crystals  

SciTech Connect (OSTI)

Cadmium Zinc Telluride (CZT) has attracted increasing interest with its promising potential as a room-temperature nuclear-radiation-detector material. However, different defects in CZT crystals, especially Te inclusions and dislocations, can degrade the performance of CZT detectors. Post-growth annealing is a good approach potentially to eliminate the deleterious influence of these defects. At Brookhaven National Laboratory (BNL), we built up different facilities for investigating post-growth annealing of CZT. Here, we report our latest experimental results. Cd-vapor annealing reduces the density of Te inclusions, while large temperature gradient promotes the migration of small-size Te inclusions. Simultaneously, the annealing lowers the density of dislocations. However, only-Cd-vapor annealing decreases the resistivity, possibly reflecting the introduction of extra Cd in the lattice. Subsequent Te-vapor annealing is needed to ensure the recovery of the resistivity after removing the Te inclusions.

Yang, G.; Bolotnikov, A.E.; Fochuk, P.M.; Camarda, G.S.; Cui, Y.; Hossain, A.; Kim, K.; Horace, J.; McCall, B.; Gul, R.; Xu, L.; Kopach, O.V.; and James, R.B.

2010-08-01T23:59:59.000Z

231

Upper Hot Creek Ranch Geothermal Area | Open Energy Information  

Open Energy Info (EERE)

Upper Hot Creek Ranch Geothermal Area Upper Hot Creek Ranch Geothermal Area (Redirected from Upper Hot Creek Ranch Area) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Geothermal Resource Area: Upper Hot Creek Ranch Geothermal Area Contents 1 Area Overview 2 History and Infrastructure 3 Regulatory and Environmental Issues 4 Exploration History 5 Well Field Description 6 Geology of the Area 7 Geofluid Geochemistry 8 NEPA-Related Analyses (0) 9 Exploration Activities (2) 10 References Area Overview Geothermal Area Profile Location: Nevada Exploration Region: Northern Basin and Range Geothermal Region GEA Development Phase: 2008 USGS Resource Estimate Mean Reservoir Temp: Estimated Reservoir Volume: Mean Capacity: Click "Edit With Form" above to add content History and Infrastructure

232

Upper bound analysis for drag anchors in soft clay  

E-Print Network [OSTI]

This study presents an upper bound plastic limit analysis for predicting drag anchor trajectory and load capacity. The shank and fluke of the anchor are idealized as simple plates. The failure mechanism involves the motion of the anchor about a...

Kim, Byoung Min

2007-04-25T23:59:59.000Z

233

Wave-forced resuspension of upper Chesapeake Bay muds  

Science Journals Connector (OSTI)

Moored instruments were used to make observations of near bottom currents, waves, temperature, salinity, and turbidity at shallow (3.5 m and 5.5 m depth) dredged sediment disposal sites in upper Chesapeake Bay du...

Lawrence P. Sanford

1994-03-01T23:59:59.000Z

234

Buoyancy of the continental upper mantle Robyn K. Kelly  

E-Print Network [OSTI]

Buoyancy of the continental upper mantle Robyn K. Kelly Department of Geology and Geophysics, MIT). Received 21 June 2002; Revised 11 October 2002; Accepted 15 October 2002; Published 18 February 2003. Kelly

235

Upper-tropospheric moistening in response to anthropogenic warming  

Science Journals Connector (OSTI)

Upper-tropospheric moistening in response to anthropogenic warming 10.1073/pnas.1409659111 Eui-Seok Chung Brian Soden B. J. Sohn Lei Shi aRosenstiel School of Marine and Atmospheric Science, University of Miami, Miami...

Eui-Seok Chung; Brian Soden; B. J. Sohn; Lei Shi

2014-01-01T23:59:59.000Z

236

Improvable upper bounds to the piezoelectric polaron ground state energy  

E-Print Network [OSTI]

It was shown that an infinite sequence of improving non-increasing upper bounds to the ground state energy (GSE) of a slow-moving piezoeletric polaron can be devised.

A. V. Soldatov

2014-12-31T23:59:59.000Z

237

Infiltration in the Upper Río Chagres Basin, Panama  

Science Journals Connector (OSTI)

Annual runoff hydrographs recorded by the Panama Canal Authority in the upper Río Chagres...Curve Number’ (CN) methodology. Specifically, variation curve of the CN was analyzed using rainfall and runoff observati...

Lucas E. Calvo; Fred L. Ogden; Jan M.H. Hendrickx

2005-01-01T23:59:59.000Z

238

Characterization of Sea Turtle Nesting on the Upper Texas Coast  

E-Print Network [OSTI]

Nearly annual record Kemp’s ridley sea turtle (Lepidochelys kempii) nesting activity on the upper Texas coast (UTC; defined as beaches from Sabine Pass to Matagorda Peninsula), where scientifically verifiable nesting commenced in 2002, has occurred...

Hughes, Christi Lynn

2014-05-06T23:59:59.000Z

239

Single-Crystalline Branched Zinc Phosphide Nanostructures: Synthesis,  

E-Print Network [OSTI]

optoelectronic devices, including solar cells, flat panel displays, and light emitting diodes (LEDs). Most of the optoelectronic devices having a TC are fabricated on indium tin oxide (ITO) coated substrates because

Wang, Zhong L.

240

Zinc surface complexes on birnessite: A density functional theory study  

E-Print Network [OSTI]

of plane- wave electronic structure calculations of bulkJ. (2006) Electronic Structure Calculations for Solids andelectronic, and magnetic properties of Mn oxides, a spin-polarization treatment is essential in performing DFT calculations (

Kwon, Kideok D.

2009-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "zinc oxide upper" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

An upper bound for the proton temperature anisotrophy  

SciTech Connect (OSTI)

This tutorial describes recent research concerning the upper bound on the hot proton temperature anisotropy imposed by wave-particle scattering due to enhanced fluctuations from the electromagnetic proton cyclotron anisotropy instability. This upper bound, which has been observed in both the magnetosheath and the outer magnetosphere, represents a limited closure relation for the equations of anisotropic magnetohydrodynamics. Such a closure relation has the potential to improve the predictive capability of large-scale anisotropic models of the magnetosphere.

Gary, S.P.

1994-11-01T23:59:59.000Z

242

Comparison of the Catalytic Oxidation Reaction on Graphene Oxide and Reduced Graphene Oxide  

E-Print Network [OSTI]

Comparison of the Catalytic Oxidation Reaction on Graphene Oxide and Reduced Graphene Oxide Laboratory (PAL), Pohang 790-784, Republic of Korea ABSTRACT: The capacities of graphene oxide (GO) and reduced graphene oxide (rGO) films grown on silicon substrate to cause the aniline to azobenzene oxidation

Kim, Sehun

243

Performance Enhancement of a Graphene-Zinc Phosphide Solar Cell Using the Electric Field-Effect  

E-Print Network [OSTI]

Performance Enhancement of a Graphene-Zinc Phosphide Solar Cell Using the Electric Field, University of California, Berkeley, California 94720, United States Material Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States § Department of Applied Physics

Javey, Ali

244

Understanding Zinc Quantification with Existing and Advanced Ditopic Fluorescent Zinpyr Sensors  

E-Print Network [OSTI]

Treatment of aqueous zinc solutions with incremental additions of a ditopic fluorescent sensor of the Zinpyr family, based on pyridine/pyrazine-containing metal recognition units, affords a fluorescence titration curve ...

Buccella, Daniela

245

Ribosomal Zinc Finger Proteins: The Structure and the Function of Yeast YL37a  

Science Journals Connector (OSTI)

Zinc finger motifs are common in ribosomal proteins: they are widely distributed in nature, having been found amongst the proteins of both subunits of the ribosomes of all species examined in the three kingdom...

John Dresios; Yuen-Ling Chan; Ira G. Wool

2005-01-01T23:59:59.000Z

246

Comparison of Nanocomposites Prepared from Sodium, Zinc, and Lithium Ionomers of Ethylene/Methacrylic Acid Copolymers  

Science Journals Connector (OSTI)

Morphology and mechanical properties of nanocomposites prepared by melt mixing a montmorillonite-based organoclay with lithium, sodium, and zinc ionomers of poly(ethylene-co-methacrylic acid) are presented here. The effect of the type of neutralizing ...

Rhutesh K. Shah; D. R. Paul

2006-03-31T23:59:59.000Z

247

Dependence of the activation energy of vacancy formation on the zinc content in alpha brasses  

Science Journals Connector (OSTI)

Observations on quenched-in resistivity in alpha brasses showed an apparent decrease in the activation energy of vacancy formation with increasing zinc content from a value of 0·85 eV ... up to a concentration of...

R. Kamel; T. H. Youssef

1968-01-01T23:59:59.000Z

248

Spin-dependent electron transport in zinc- and manganese-doped adenine molecules  

SciTech Connect (OSTI)

The spin-dependent electron transport properties of zinc- and manganese-doped adenine molecules connected to zigzag graphene leads are studied in the zero bias regime using the non-equilibrium Green's function method. The conductance of the adenine molecule increased and became spin-dependent when a zinc or manganese atom was doped into the molecules. The effects of a transverse electric field on the spin-polarization of the transmitted electrons were investigated and the spin-polarization was controlled by changing the transverse electric field. Under the presence of a transverse electric field, both the zinc- and manganese-doped adenine molecules acted as spin-filters. The maximum spin-polarization of the manganese-doped adenine molecule was greater than the molecule doped with zinc.

Simchi, Hamidreza, E-mail: simchi@iust.ac.ir [Department of Physics, Iran University of Science and Technology, Narmak, Tehran 16844 (Iran, Islamic Republic of); Semiconductor Technology Center, Tehran 16844 (Iran, Islamic Republic of); Esmaeilzadeh, Mahdi, E-mail: mahdi@iust.ac.ir; Mazidabadi, Hossein [Department of Physics, Iran University of Science and Technology, Narmak, Tehran 16844 (Iran, Islamic Republic of)

2014-01-28T23:59:59.000Z

249

CATALYTIC LIQUEFACTION BY ZINC CHLORIDE MELTS AT PRE-PYROLYSIS TEMPERATURE  

E-Print Network [OSTI]

3% Zn and 14% CH oH (50 g coal 9 300 g melt) Atomic TempVermeulen, "High-Yield Coal Conversion in a Zinc Chloride/H. Shinn, and T. Vermeulen, "Coal Lic;uefaction Catalysis by

Vermeulen, T.

2012-01-01T23:59:59.000Z

250

Beyond Density: Measuring Neighborhood Form in New England's Upper Connecticut River Valley  

E-Print Network [OSTI]

in New England’s Upper Connecticut River Valley by Peterin New England’s Upper Connecticut River Valley by Peterof New England’s Upper Connecticut River Valley encompassing

Owens, Peter Marshall

2005-01-01T23:59:59.000Z

251

Oxidation Resistant Graphite Studies  

SciTech Connect (OSTI)

The Very High Temperature Reactor (VHTR) Graphite Research and Development Program is investigating doped nuclear graphite grades exhibiting oxidation resistance. During a oxygen ingress accident the oxidation rates of the high temperature graphite core region would be extremely high resulting in significant structural damage to the core. Reducing the oxidation rate of the graphite core material would reduce the structural effects and keep the core integrity intact during any air-ingress accident. Oxidation testing of graphite doped with oxidation resistant material is being conducted to determine the extent of oxidation rate reduction. Nuclear grade graphite doped with varying levels of Boron-Carbide (B4C) was oxidized in air at nominal 740°C at 10/90% (air/He) and 100% air. The oxidation rates of the boronated and unboronated graphite grade were compared. With increasing boron-carbide content (up to 6 vol%) the oxidation rate was observed to have a 20 fold reduction from unboronated graphite. Visual inspection and uniformity of oxidation across the surface of the specimens were conducted. Future work to determine the remaining mechanical strength as well as graphite grades with SiC doped material are discussed.

W. Windes; R. Smith

2014-07-01T23:59:59.000Z

252

C:\Documents and Settings\burris\My Documents\My Files\Eco-SSLs\Contaminant Specific Documents\Zinc\June 2007\Eco-SSL for Zinc  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Zinc Zinc Interim Final OSWER Directive 9285.7-73 U.S. Environmental Protection Agency Office of Solid Waste and Emergency Response 1200 Pennsylvania Avenue, N.W. Washington, DC 20460 June 2007 This page intentionally left blank i TABLE OF CONTENTS 1.0 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 2.0 SUMMARY OF ECO-SSLs FOR ZINC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 3.0 ECO-SSL FOR TERRESTRIAL PLANTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 4.0 ECO-SSL FOR SOIL INVERTEBRATES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 5.0 ECO-SSL FOR AVIAN WILDLIFE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 5.1 Avian TRV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 5.2 Estimation of Dose and Calculation of the Eco-SSL . . . . . . . . . . . . . . . . . . . . . . . 14 6.0 ECO-SSL FOR MAMMALIAN WILDLIFE .

253

The effect of phosphorus and zinc on mineral nutrition and growth of flax plants  

E-Print Network [OSTI]

THE EFFECT OF PHOSPHORUS AND ZINC ON NINERAL NUTRITICN AND GROWTH OF FLAX PLANTS A THESIS PAUL B. I'IATOCHA, JR. Submitted to the Graduate College of the Texas AkN University in partial fulfillment oi' the requirements for the degree... of PASTER QF SCIENCE January 1967 Najor Subject: Agronomy THE EFFECT OF PHOSPHORUS AND ZINC GN MINERAL NUTRITION AND GROMTH OF FLAX PLANTS A Thesis PAUL B. MATOCHA, JR. Approved as to style and content by: (Chairman of Committee) ~v...

Matocha, Paul B

1967-01-01T23:59:59.000Z

254

Benthic Assemblage Variability in the Upper San Francisco Estuary: A 27-Year Retrospective  

E-Print Network [OSTI]

and sediments along a salinity gradient in the upper Forthalong estuarine salinity gradients. Journal of Marinestations located along a salinity gradient in the upper San

Peterson, Heather A; Vayssieres, Marc

2010-01-01T23:59:59.000Z

255

METAL OXIDE NANOPARTICLES  

SciTech Connect (OSTI)

This chapter covers the fundamental science, synthesis, characterization, physicochemical properties and applications of oxide nanomaterials. Explains fundamental aspects that determine the growth and behavior of these systems, briefly examines synthetic procedures using bottom-up and top-down fabrication technologies, discusses the sophisticated experimental techniques and state of the art theory results used to characterize the physico-chemical properties of oxide solids and describe the current knowledge concerning key oxide materials with important technological applications.

FERNANDEZ-GARCIA,M.; RODGRIGUEZ, J.A.

2007-10-01T23:59:59.000Z

256

Improved irradiances for use in ocean heating, primary production, and photo-oxidation calculations  

E-Print Network [OSTI]

computed by a radiative transfer code that can be used to convert above-surface values in either energy- plankton affect upper-ocean thermal structure via absorption of solar irradiance at visible wavelengthsImproved irradiances for use in ocean heating, primary production, and photo-oxidation calculations

Boss, Emmanuel S.

257

Retaining the 3D Framework of Zinc Sponge Anodes upon Deep Discharge in Zn–Air Cells  

Science Journals Connector (OSTI)

zinc; zinc?air; batteries; morphology; energy; three-dimensional architecture ... Zinc-based batteries offer many appealing characteristics, including low-cost components, water-based electrolytes, and high energy density, yet their broader applicability has been limited by suboptimal performance of the Zn anode, which undergoes complex chemical and electrochemical reactions during operation. ... discharge depth-of-discharge specific capacityaverage dischargespecific energy Rcell,initialc Rcell,post?dischargec ...

Joseph F. Parker; Eric S. Nelson; Matthew D. Wattendorf; Christopher N. Chervin; Jeffrey W. Long; Debra R. Rolison

2014-10-28T23:59:59.000Z

258

Structural basis for the selective nuclear import of the C2H2 zinc-finger protein Snail by importin  

Science Journals Connector (OSTI)

The X-ray structure of the complex of the nuclear transporter importin with the zinc-finger-type transcription regulator Snail1 is reported.

Choi, S.

2014-03-19T23:59:59.000Z

259

Upper Hot Creek Ranch Geothermal Area | Open Energy Information  

Open Energy Info (EERE)

Upper Hot Creek Ranch Geothermal Area Upper Hot Creek Ranch Geothermal Area Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Geothermal Resource Area: Upper Hot Creek Ranch Geothermal Area Contents 1 Area Overview 2 History and Infrastructure 3 Regulatory and Environmental Issues 4 Exploration History 5 Well Field Description 6 Geology of the Area 7 Geofluid Geochemistry 8 NEPA-Related Analyses (0) 9 Exploration Activities (2) 10 References Area Overview Geothermal Area Profile Location: Nevada Exploration Region: Northern Basin and Range Geothermal Region GEA Development Phase: 2008 USGS Resource Estimate Mean Reservoir Temp: Estimated Reservoir Volume: Mean Capacity: Click "Edit With Form" above to add content History and Infrastructure Operating Power Plants: 0 No geothermal plants listed.

260

Stabilized chromium oxide film  

DOE Patents [OSTI]

Stabilized air-oxidized chromium films deposited on high-power klystron ceramic windows and sleeves having a thickness between 20 and 150.ANG. are useful in lowering secondary electron emission yield and in avoiding multipactoring and window failure due to overheating. The ceramic substrate for the film is chosen from alumina, sapphire or beryllium oxide.

Garwin, Edward L. (Los Altos, CA); Nyaiesh, Ali R. (Palo Alto, CA)

1988-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "zinc oxide upper" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

Stabilized chromium oxide film  

DOE Patents [OSTI]

Stabilized air-oxidized chromium films deposited on high-power klystron ceramic windows and sleeves having a thickness between 20 and 150A are useful in lowering secondary electron emission yield and in avoiding multipactoring and window failure due to overheating. The ceramic substrate for the film is chosen from alumina, sapphire or beryllium oxide.

Nyaiesh, A.R.; Garwin, E.L.

1986-08-04T23:59:59.000Z

262

Ethylene Oxide Explosions  

Science Journals Connector (OSTI)

... THE occasional occurrence of ethylene oxide explosions during the fumigation of dried fruit has led us to undertake a detailed ... yielded results somewhat like those for acetaldehyde1,2.. Cool flames can be initiated in ethylene oxide – air mixtures in the neighbourhood of 330° C. at atmospheric pressure. ...

J. H. BURGOYNE; F. A. BURDEN

1948-07-31T23:59:59.000Z

263

Ambient temperature cadmium zinc telluride radiation detector and amplifier circuit  

DOE Patents [OSTI]

A low noise, low power consumption, compact, ambient temperature signal amplifier for a Cadmium Zinc Telluride (CZT) radiation detector. The amplifier can be used within a larger system (e.g., including a multi-channel analyzer) to allow isotopic analysis of radionuclides in the field. In one embodiment, the circuit stages of the low power, low noise amplifier are constructed using integrated circuit (IC) amplifiers , rather than discrete components, and include a very low noise, high gain, high bandwidth dual part preamplification stage, an amplification stage, and an filter stage. The low noise, low power consumption, compact, ambient temperature amplifier enables the CZT detector to achieve both the efficiency required to determine the presence of radio nuclides and the resolution necessary to perform isotopic analysis to perform nuclear material identification. The present low noise, low power, compact, ambient temperature amplifier enables a CZT detector to achieve resolution of less than 3% full width at half maximum at 122 keV for a Cobalt-57 isotope source. By using IC circuits and using only a single 12 volt supply and ground, the novel amplifier provides significant power savings and is well suited for prolonged portable in-field use and does not require heavy, bulky power supply components.

McQuaid, James H. (Livermore, CA); Lavietes, Anthony D. (Hayward, CA)

1998-05-29T23:59:59.000Z

264

Degradation characteristics of air cathode in zinc air fuel cells  

Science Journals Connector (OSTI)

Abstract The zinc air fuel cell (ZAFC) is a promising candidate for electrical energy storage and electric vehicle propulsion. However, its limited durability has become a major obstacle for its successful commercialization. In this study, 2-cell stacks, 25 cm² cells and three-electrode half-cells are constructed to experimentally investigate the degradation characteristics of the air cathode. The results of electrochemical tests reveal that the peak power density for the 25 cm2 cell with a new air cathode is 454 mW cm?2, which is twice as the value of the used air cathode. The electrochemical impedance analysis shows that both the charge transfer resistance and the mass transfer resistance of the used air cathodes have increased, suggesting that the catalyst surface area and gas diffusion coefficient have decreased significantly. Additionally, the microstructure and morphology of the catalytic layer (CL) and gas diffusion layer (GDL) are characterized by scanning electron microscopes (SEM). SEM results confirm that the micropores in CL and GDL of the used air cathode are seriously clogged, and many catalyst particles are lost. Therefore, the performance degradation is mainly due to the clogging of micropores and loss of catalyst particles. Furthermore, hypotheses of degradation mechanism and mitigation strategies for GDL and CL are discussed briefly.

Ze Ma; Pucheng Pei; Keliang Wang; Xizhong Wang; Huachi Xu; Yongfeng Liu; Guanlin peng

2015-01-01T23:59:59.000Z

265

Ambient temperature cadmium zinc telluride radiation detector and amplifier circuit  

DOE Patents [OSTI]

A low noise, low power consumption, compact, ambient temperature signal amplifier for a Cadmium Zinc Telluride (CZT) radiation detector is disclosed. The amplifier can be used within a larger system (e.g., including a multi-channel analyzer) to allow isotopic analysis of radionuclides in the field. In one embodiment, the circuit stages of the low power, low noise amplifier are constructed using integrated circuit (IC) amplifiers , rather than discrete components, and include a very low noise, high gain, high bandwidth dual part preamplification stage, an amplification stage, and an filter stage. The low noise, low power consumption, compact, ambient temperature amplifier enables the CZT detector to achieve both the efficiency required to determine the presence of radionuclides and the resolution necessary to perform isotopic analysis to perform nuclear material identification. The present low noise, low power, compact, ambient temperature amplifier enables a CZT detector to achieve resolution of less than 3% full width at half maximum at 122 keV for a Cobalt-57 isotope source. By using IC circuits and using only a single 12 volt supply and ground, the novel amplifier provides significant power savings and is well suited for prolonged portable in-field use and does not require heavy, bulky power supply components. 9 figs.

McQuaid, J.H.; Lavietes, A.D.

1998-05-26T23:59:59.000Z

266

Adhesion properties of polyelectrolyte-chemisorbed zinc phosphate conversion coatings  

SciTech Connect (OSTI)

It has been reported that when mild carbon cold-rolled steels are immersed in the Zn/sub 3/(PO/sub 4/)/sub 2/ . 2H/sub 2/O-H/sub 3/PO/sub 4/-H/sub 2/O solution systems, the surface microfeatures of crystalline zinc phosphate (Zn . Ph) conversion coating deposited on the steel substrate surface were characterized by large rectangular-like crystal arrays of insoluble Zn . Ph hydrate. Deformation failures of layers having low stiffness characteristics appear to be directly related to the development of micropores and fissures which reduce the effectiveness of the corrosion-resistant coatings. Thus, it is necessary to increase the flexural modulus of the layers in order to restrain the physical deformation failures of the crystalline precoats. The brittle characteristics of the Zn . Ph can be modified by the introduction of the polyacrylic acid (PAA) macromolecules into the phosphating solutions. The incorporation of PAA, which is generally expressed as a polyelectrolyte macromolecule, was shown to form a highly dense fine crystal topography, suggesting that the crystal formation results in an improvement in the stiffness and ductility characteristics of the normally brittle Zn . Ph layers. Accordingly, emphasis of the present paper is given to the finding as to how the molecular structures and functional species of polyelectrolytes act to suppress crystal growth of Zn . Ph and improve interfacial bond durability of Zn . Ph-to-polymeric adhesive joints. 2 refs., 5 figs.

Sugama, T.

1986-10-01T23:59:59.000Z

267

Oxidative Degradation of Monoethanolamine  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Oxidative Degradation of Monoethanolamine Oxidative Degradation of Monoethanolamine Susan Chi Gary T. Rochelle* (gtr@che.utexas.edu, 512-471-7230) The University of Texas at Austin Department of Chemical Engineering Austin, Texas 78712 Prepared for presentation at the First National Conference on Carbon Sequestration, Washington, DC, May 14-17, 2001 Abstract Oxidative degradation of monoethanolamine (MEA) was studied under typical absorber condition of 55°C. The rate of evolution of NH 3 , which was indicative of the overall rate of degradation, was measured continuously in a batch system sparged with air. Dissolved iron from 0.0001 mM to 1 mM yields oxidation rates from 0.37 to 2 mM/hr in MEA solutions loaded with 0.4 mole CO 2 / mole MEA. Ethylenediaminetetraacetic acid (EDTA) and N,N-bis(2- hydroxyethyl)glycine effectively decrease the rate of oxidation in the presence of iron by 40 to

268

MODELING THE FATE AND TRANSPORT OF ATRAZINE IN THE UPPER CHESAPEAKE BAY  

E-Print Network [OSTI]

for agrochemicals in the Upper Chesapeake Bay. Keywords: Chesapeake Bay, hydrodynamic model, atrazine, photolysis

Frei, Allan

269

Phase-Transfer-Catalyzed Oxidations  

Science Journals Connector (OSTI)

Phase-transfer catalysis (PTC) offers many excellent opportunities for conducting oxidation reactions using inexpensive primary oxidants such as oxygen, sodium hypochlorite, hydrogen peroxide, electrooxidation...

Charles M. Starks; Charles L. Liotta; Marc E. Halpern

1994-01-01T23:59:59.000Z

270

Threshold concentrations in zinc-doped lithium niobate crystals and their structural conditionality  

SciTech Connect (OSTI)

On the basis of precise X-ray diffraction study of lithium niobate single crystals of congruent composition and four zinc-doped (at 2.8, 5.2, 7.6, and 8.2 mol %) crystals, structural conditionality of the threshold concentrations of the dopant has been established. At these concentrations, the mechanism of zinc incorporation into crystal changes. As the zinc concentration increases, this element first substitutes excess niobium, localized in lithium positions, with a simultaneous decrease in the number of vacancies in these positions. Then zinc substitutes lithium with formation of new lithium vacancies. When a certain limit on the number of vacancies is reached, zinc begins to substitute niobium in its main positions. This process is naturally accompanied by a decrease in the number of vacancies to their complete disappearance and formation of a self-compensating crystal. The character of the dependence of the crystal physical properties on the dopant concentration changes specifically when the impurity concentration passes through the threshold values.

Chernaya, T. S.; Volk, T. R.; Verin, I. A.; Simonov, V. I., E-mail: simonov@ns.crys.ras.ru [Russian Academy of Sciences, Shubnikov Institute of Crystallography (Russian Federation)

2008-07-15T23:59:59.000Z

271

Regenerative catalytic oxidation  

SciTech Connect (OSTI)

Currently Regenerative Thermal Oxidizers (R.T.O.`s) are an accepted technology for the control of volatile organic compounds (VOC`s) and hazardous air pollutants (HAP`s). This control technology, when introduced, offered substantial reductions in operating costs, especially auxiliary fuel requirements when compared to existing control technologies such as recuperative thermal and recuperative catalytic oxidizers. While these savings still exist, there is a demand for control of new and/or hybrid technologies, one of which is Regenerative Catalytic Oxidizers (R.C.O.`s). This paper will explore the development of regenerative catalytic oxidation from the theoretical stage through pilot testing through a commercial installation. The operating cost of R.C.O.`s will be compared to R.T.O.`s to verify the savings that are achievable through the use of regenerative catalytic oxidation. In the development of this technology, which is a combination of two (2) existing technologies, R.T.O.`s and catalysis, a second hybrid technology was explored and pilot tested. This is a combination R.C.O. for VOC and HAP control and simultaneous SCR (Selective Catalytic Reduction) for NOx (Oxides of Nitrogen) control. Based on the pilot and full scale testing, both regenerative catalytic oxidizers and systems which combine R.C.O. with SCR for both VOC and NOx reduction are economically viable and are in fact commercially available. 6 figs., 2 tabs.

Gribbon, S.T. [Engelhard Process Emission Systems, South Lyon, MI (United States)

1996-12-31T23:59:59.000Z

272

NETL: Ambient Monitoring - Upper Ohio River Valley Project  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Upper Ohio River Valley Project Upper Ohio River Valley Project In cooperation with key stakeholders including EPA, local and state environmental agencies, industry, and academia, the U.S. Department of Energy (DOE) has established the Upper Ohio River Valley Project (UORVP), a network for monitoring and characterizing PM2.5 in the Upper Ohio River Valley. This region was chosen because it has a high density of coal-fired electric utilities, heavy industries (e.g. coke and steel making), light industry, and transportation emission sources. It is also ideally situated to serve as a platform for the study of interstate pollution transport issues. This region, with its unique topography (hills and river valleys) as well as a good mix of urban and rural areas, has a high population of elderly who are susceptible to health impacts of fine particulate as well as other related environmental issues (e.g., acid rain, Hg deposition, ozone). A world-class medical research/university system is also located in the region, which will facilitate the subsequent use of the air quality data in studies of PM2.5 health effects.

273

LARGE ABUNDANCES OF POLYCYCLIC AROMATIC HYDROCARBONS IN TITAN'S UPPER ATMOSPHERE  

SciTech Connect (OSTI)

In this paper, we analyze the strong unidentified emission near 3.28 {mu}m in Titan's upper daytime atmosphere recently discovered by Dinelli et al. We have studied it by using the NASA Ames PAH IR Spectroscopic Database. The polycyclic aromatic hydrocarbons (PAHs), after absorbing UV solar radiation, are able to emit strongly near 3.3 {mu}m. By using current models for the redistribution of the absorbed UV energy, we have explained the observed spectral feature and have derived the vertical distribution of PAH abundances in Titan's upper atmosphere. PAHs have been found to be present in large concentrations, about (2-3) Multiplication-Sign 10{sup 4} particles cm{sup -3}. The identified PAHs have 9-96 carbons, with a concentration-weighted average of 34 carbons. The mean mass is {approx}430 u; the mean area is about 0.53 nm{sup 2}; they are formed by 10-11 rings on average, and about one-third of them contain nitrogen atoms. Recently, benzene together with light aromatic species as well as small concentrations of heavy positive and negative ions have been detected in Titan's upper atmosphere. We suggest that the large concentrations of PAHs found here are the neutral counterpart of those positive and negative ions, which hence supports the theory that the origin of Titan main haze layer is located in the upper atmosphere.

Lopez-Puertas, M.; Funke, B.; Garcia-Comas, M. [Instituto de Astrofisica de Andalucia (CSIC), E-18080 Granada (Spain); Dinelli, B. M. [ISAC-CNR, I-40129 Bologna (Italy); Adriani, A.; D'Aversa, E. [IAPS-INAF, I-00133 Rome (Italy); Moriconi, M. L. [ISAC-CNR, I-00133 Rome (Italy); Boersma, C.; Allamandola, L. J., E-mail: puertas@iaa.es [NASA Ames Research Center, Moffett Field, CA 94035-1000 (United States)

2013-06-20T23:59:59.000Z

274

Upper Midwest Food, Fuel and Fiber Network Tour  

E-Print Network [OSTI]

2nd Annual Upper Midwest Food, Fuel and Fiber Network Tour Aug. 31 ­ Sept. 2, 2010 #12;Tuesday, fuel, and fiber research. 8:15 p.m. Adjourn to University Plaza Hotel www.uphwl.com #12;Wednesday.m. Controlled Sub-Surface Drainage Dr. Eileen Kladivko, Department of Agronomy 2:00 p.m. Algae Wheel (Sewage

275

Scales and Effects of Fluid Flow in the Upper Crust  

Science Journals Connector (OSTI)

...subsurface reservoirs. The tapping of these reservoirs is the basis...drives the rock cycle and...and a soil porosity of 25...variations in permeability focus or...fracture porosity ofigneous rocks. Fluids...oil reservoirs. ModifiedUpper...can modify permeability and topography...

Lawrence M. Cathles III

1990-04-20T23:59:59.000Z

276

Remark on the coherent information saturating its upper bound  

E-Print Network [OSTI]

Coherent information is a useful concept in quantum information theory. It connects with other notions in data processing. In this short remark, we discuss the coherent information saturating its upper bound. A necessary and sufficient condition for this saturation is derived.

Lin Zhang

2012-08-25T23:59:59.000Z

277

An unexpected cooling effect in Saturn's upper atmosphere  

Science Journals Connector (OSTI)

... The upper atmospheres of the four Solar System giant planets exhibit high temperatures that cannot be explained by the absorption of sunlight ... the absorption of sunlight. In the case of Saturn the temperatures predicted by models of solar heating are ?200?K, compared to temperatures of ?400?K observed independently in ...

C. G. A. Smith; A. D. Aylward; G. H. Millward; S. Miller; L. E. Moore

2007-01-25T23:59:59.000Z

278

Scales and Effects of Fluid Flow in the Upper Crust  

Science Journals Connector (OSTI)

...of these reservoirs is the basis...drives the rock cycle and...and a soil porosity of 25...variations in permeability focus or...Mesozoic sandstones, siltstones...fracture porosity ofigneous rocks. Fluids...oil reservoirs. ModifiedUpper...can modify permeability and topography...and water quality), and at...fracture porosity and permeability...

Lawrence M. Cathles III

1990-04-20T23:59:59.000Z

279

Scales and Effects of Fluid Flow in the Upper Crust  

Science Journals Connector (OSTI)

...of these reservoirs is the basis...drives the rock cycle and...and a soil porosity of 25...variations in permeability focus or...fracture porosity ofigneous rocks. Fluids...oil reservoirs. ModifiedUpper...can modify permeability and topography...and water quality), and at...fracture porosity and permeability...

Lawrence M. Cathles III

1990-04-20T23:59:59.000Z

280

Methane-derived hydrocarbons produced under upper-mantle conditions  

SciTech Connect (OSTI)

There is widespread evidence that petroleum originates from biological processes. Whether hydrocarbons can also be produced from abiogenic precursor molecules under the high-pressure, high-temperature conditions characteristic of the upper mantle remains an open question. It has been proposed that hydrocarbons generated in the upper mantle could be transported through deep faults to shallower regions in the Earth's crust, and contribute to petroleum reserves. Here we use in situ Raman spectroscopy in laser-heated diamond anvil cells to monitor the chemical reactivity of methane and ethane under upper-mantle conditions. We show that when methane is exposed to pressures higher than 2 GPa, and to temperatures in the range of 1,000-1,500 K, it partially reacts to form saturated hydrocarbons containing 2-4 carbons (ethane, propane and butane) and molecular hydrogen and graphite. Conversely, exposure of ethane to similar conditions results in the production of methane, suggesting that the synthesis of saturated hydrocarbons is reversible. Our results support the suggestion that hydrocarbons heavier than methane can be produced by abiogenic processes in the upper mantle.

Kolesnikov, Anton; Kutcherov, Vladimir G.; Goncharov, Alexander F.; (CIW); (RITS)

2009-08-13T23:59:59.000Z

Note: This page contains sample records for the topic "zinc oxide upper" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

Simulating Sustainability: Conjunctive Land and Water Management in the Upper  

E-Print Network [OSTI]

Simulating Sustainability: Conjunctive Land and Water Management in the Upper Santa Cruz River Water Issue: Introduction and Context This research project addresses a chronic water management issue in Arizona: management and allocation of water supplies in areas undergoing rapid growth and land use changes

Fay, Noah

282

A zinc-air battery and flywheel zero emission vehicle  

SciTech Connect (OSTI)

In response to the 1990 Clean Air Act, the California Air Resources Board (CARB) developed a compliance plan known as the Low Emission Vehicle Program. An integral part of that program was a sales mandate to the top seven automobile manufacturers requiring the percentage of Zero Emission Vehicles (ZEVs) sold in California to be 2% in 1998, 5% in 2001 and 10% by 2003. Currently available ZEV technology will probably not meet customer demand for range and moderate cost. A potential option to meet the CARB mandate is to use two Lawrence Livermore National Laboratory (LLNL) technologies, namely, zinc-air refuelable batteries (ZARBs) and electromechanical batteries (EMBs, i. e., flywheels) to develop a ZEV with a 384 kilometer (240 mile) urban range. This vehicle uses a 40 kW, 70 kWh ZARB for energy storage combined with a 102 kW, 0.5 kWh EMB for power peaking. These technologies are sufficiently near-term and cost-effective to plausibly be in production by the 1999-2001 time frame for stationary and initial vehicular applications. Unlike many other ZEVs currently being developed by industry, our proposed ZEV has range, acceleration, and size consistent with larger conventional passenger vehicles available today. Our life-cycle cost projections for this technology are lower than for Pb-acid battery ZEVs. We have used our Hybrid Vehicle Evaluation Code (HVEC) to simulate the performance of the vehicle and to size the various components. The use of conservative subsystem performance parameters and the resulting vehicle performance are discussed in detail.

Tokarz, F.; Smith, J.R.; Cooper, J.; Bender, D.; Aceves, S.

1995-10-03T23:59:59.000Z

283

SOLID OXIDE PLANAR AND TUBULAR SOLID OXIDE FUEL  

E-Print Network [OSTI]

SOLID OXIDE PLANAR AND TUBULAR SOLID OXIDE FUEL CELLS Dynamic Simulation Approach Modular Approach · Parallel planes: PSOFC · Other: combustor, reformer Solid Oxide Fuel Cell Electrochemistry Cell Reactions · Slow pressure transients #12;Fuel Cell Assumptions · H2 electrochemically oxidized only · CO consumed

Mease, Kenneth D.

284

One-Step Synthesis of Graphene/Polypyrrole Nanofiber Composites as Cathode Material for a Biocompatible Zinc/Polymer Battery  

Science Journals Connector (OSTI)

One-Step Synthesis of Graphene/Polypyrrole Nanofiber Composites as Cathode Material for a Biocompatible Zinc/Polymer Battery ... Miniature or flexible aqueous metal–air batteries are currently considered to be one of the most promising candidates for powering mIMDs, which mainly include the zinc–air battery system and the magnesium–air battery system. ...

Sha Li; Kewei Shu; Chen Zhao; Caiyun Wang; Zaiping Guo; Gordon Wallace; Hua Kun Liu

2014-09-08T23:59:59.000Z

285

Contribution of calcium-conducting channels to the transport of zinc ions Alexandre Bouron 1,2,3  

E-Print Network [OSTI]

1 Contribution of calcium-conducting channels to the transport of zinc ions Alexandre Bouron 1. The mechanisms controlling its transport through the plasma membrane are far from being completely understood in the cellular uptake of zinc. These ion channels are currently described as systems dedicated to the transport

286

Zinc Deficiency Linked to Increased Risk of Less-Common Form of Esophageal  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

National Cancer Institute National Cancer Institute Journal of the NCI X-ray Microscopy Group Zinc Deficiency Linked to Increased Risk of Less-Common Form of Esophageal Cancer Researchers at the National Cancer Institute (NCI), part of the National Institutes of Health, using x-ray fluorescence spectroscopy at X-ray Operations and Research beamline 2-BM at the U.S. Department of Energy's Advanced Photon Source have found that zinc deficiency in humans is associated with an increased risk of developing esophageal squamous cell carcinoma, an often-fatal form of esophageal cancer that has about 7,000 cases a year. NCI researchers used a novel approach to measure the concentration of zinc and other elements directly in the esophageal tissue. Their results, appearing in the February 15, 2005, Journal of the National

287

Syngas Oxidation Mechanism  

Science Journals Connector (OSTI)

A comprehensive analysis of synthesis gas (syngas) oxidation kinetics in wide ranges of temperature ... on the basis of the reaction mechanism of syngas ignition and combustion in air. A vast set of experimental ...

A. M. Starik; N. S. Titova; A. S. Sharipov…

2010-09-01T23:59:59.000Z

288

Selenium, Cadmium, Copper, and Zinc Concentrations in Sediments and Mullet (Mugil cephalus) from the Southern Basin of Lake Macquarie, NSW, Australia  

E-Print Network [OSTI]

Selenium, Cadmium, Copper, and Zinc Concentrations in Sediments and Mullet (Mugil cephalus) from. Selenium, cadmium, copper, and zinc concentrations were measured in sediments and the tissues of mullet­19; cadmium, 14­42; copper, 1.5­3.6; zinc, 0.77­2.2 times background). Selenium, cadmium, and copper in Lake

Canberra, University of

289

Controlled CO preferential oxidation  

DOE Patents [OSTI]

Method is described for controlling the supply of air to a PROX (PReferential OXidation for CO cleanup) reactor for the preferential oxidation in the presence of hydrogen wherein the concentration of the hydrogen entering and exiting the PROX reactor is monitored, the difference there between correlated to the amount of air needed to minimize such difference, and based thereon the air supply to the PROX reactor adjusted to provide such amount and minimize such difference. 2 figs.

Meltser, M.A.; Hoch, M.M.

1997-06-10T23:59:59.000Z

290

The mass transfer and kinetics for zinc deposition from bromide media  

E-Print Network [OSTI]

Bro, I. 0 MNctBr 7. 0 5. 0 5 E 40 3. 0 2. 0 I. O 4 8 12 16 20 24 I/~ Vw (RAD/S) Figure 8. Limiting currents for zinc deposition as a function of the square root of rotational speed. 34 Table 1. Analysis of the Zn Diffusion Coefficient +2...THE MASS TRANSFER AND KINETICS FOR ZINC DEPOSITION FROM BROMIDE MEDIA A Thesis by MARK ALAN EDMUND Approved as to style and content by: (Chairman of Comnittee) (Member (Member) (Member) (Head of Department) May 1980 1385319 ABSTRACT...

Edmund, Mark Alan

1980-01-01T23:59:59.000Z

291

Humectants To Augment Current From Metallized Zinc Cathodic Protection Systems on Concrete  

SciTech Connect (OSTI)

Cathodic protection (CP) systems using thermal-sprayed zinc anodes are employed to mitigate the corrosion process in reinforced concrete structures. However, the performance of the anodes is improved by moisture at the anode-concrete interface. Research was conducted to investigate the effect of hydrophilic chemical additives, humectants, on the electrical performance and service life of zinc anodes. Lithium bromide and lithium nitrate were identified as feasible humectants with lithium bromide performing better under galvanic CP and lithium nitrate performing better under impressed current CP. Both humectants improved the electrical operating characteristics of the anode and increased the service life by up to three years.

Holcomb, Gordon R.; Covino Jr., Bernard S.; Cramer, Stephen D.; Russell, James H. Russell; Bullard, Sophie J.; Collins, W. Keith; Bennett, Jack E. (J.E. Bennett Consulting, Inc.); Soltesz, Steven M. (ODOT); Laylor, H. Martin (ODOT)

2002-12-01T23:59:59.000Z

292

Characteristics of polyacrylic acid-complexed zinc phosphate conversion films deposited on metal surfaces  

SciTech Connect (OSTI)

When water-soluble polyacrylic acid (PAA) macromolecules having MW 90,000 to 250,000 are introduced into zinc phosphating liquids, significant improvements in the properties of conventional crystalline zinc phosphate conversion films deposited on carbon steel surfaces can be obtained. The improvements include the controllability of the crystal dimensions, the degree of crystallinity, and the coating weight. The conversion complex formation plays an essential role in increasing the ductility of the normally brittle conventional crystal films. Furthermore, the thickness (20 to 40 A) and surface roughness of the thin PAA overlayer significantly acts to enhance the adhesive force at the interface between organic polymer topcoats and the complex coating.

Sugama, T.; Kukacka, L.E.; Carciello, N.

1984-01-01T23:59:59.000Z

293

The pH dependence of dihydroorotic acid synthesis catalyzed by zinc and cobalt dihydroorotase  

E-Print Network [OSTI]

THE pH DEPENDENCE (P DIHYDROGRCTIC ACID SYNTHESIS CATALYZED BY ZINC AND COBALT DIHYDROORC1IASE A Thesis by RITA ROY CHOUDHJRY ~roved style and content: ( zrrren af Ccmittee) (Manter ) ( ) ( of Iepsrt~t) Ann~st I984 The pH Dependence... of Dihydroorotic Acid Synthesis Catalyzed by Zinc and Cobalt Dihydroorotase. (August 1984 ) Rita Roy Choudhury, N. Sc, University of Banbay Chairman af Advisory Ccmitee: Dr. E. G. Sander Dihydroorotase (1-5, 6 dihydroorotate mnidohydrolase E. C. 3. 5. 2. 3...

Roy Choudhury, Rita

1984-01-01T23:59:59.000Z

294

Modeling of Diesel Oxidation Catalyst  

Science Journals Connector (OSTI)

Modeling of Diesel Oxidation Catalyst ... Optimization of hydrocarbon (HC) oxidation over a diesel oxidation catalyst (DOC) requires consideration of (i) HC gas diffusion into the catalyst layer, (ii) HC gas adsorption and desorption from catalyst sites, and (iii) kinetics of the oxidation reaction. ... Mutagenicity of Diesel Engine Exhaust Is Eliminated in the Gas Phase by an Oxidation Catalyst but Only Slightly Reduced in the Particle Phase ...

Yasushi Tanaka; Takashi Hihara; Makoto Nagata; Naoto Azuma; Akifumi Ueno

2005-09-30T23:59:59.000Z

295

Upper Cumberland E M C | Open Energy Information  

Open Energy Info (EERE)

Upper Cumberland E M C Upper Cumberland E M C Place Tennessee Utility Id 19574 Utility Location Yes Ownership C NERC Location SERC NERC SERC Yes Activity Distribution Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] Energy Information Administration Form 826[2] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png Commercial GSA 1 Commercial Commercial GSA 2 Commercial Commercial GSA 3 Commercial Industrial GSA 1 Industrial Industrial GSA 2 Industrial Industrial GSA 3 Industrial Residential Residential outdoor light(Mercury 175 Watt) Lighting outdoor light(Mercury 400 Watt) Lighting outdoor light(Metal Halide 1000 watt FL) Lighting outdoor light(Metal Halide 250 watt FL) Lighting

296

EIS-0408: Upper Great Plains Wind Energy Programmatic EIS  

Broader source: Energy.gov [DOE]

This EIS, being prepared jointly by DOE's Western Area Power Administration and the Department of the Interior’s Fish and Wildlife Service, will evaluate the environmental impacts of wind energy development in Iowa, Minnesota, Montana, Nebraska, North Dakota, and South Dakota – Western’s Upper Great Plains customer service region. Western will use the EIS to implement a comprehensive regional program to manage interconnection requests for wind energy projects.

297

Diagenetic history of Missourian (Upper Pennsylvanian) Chanute Shale, Cherokee Shelf, midcontinent U. S. A  

SciTech Connect (OSTI)

The Chanute (Ch) Shale consists of two sandstone bodies deposited in fluvial deltaic complexes separated by a shale unit and a coal. The lower Ch is characterized by very fine-to-medium-grained sandstone that fill channels at its base, while the upper Ch includes silt-to-fine-grained sandstone bodies. Petrographic analyses of both units show that they consist of quartz arenites, subarkose, sublitharenite, feldspathic litharenites, litharenites and wackes of the same compositions. Silica-supersaturated waters in the meteoric regime cemented the Ch sands creating thin and discontinuous overgrowths on detrital quartz grains. Early calcite cement precipitated afterwards, inhibiting further silica cementation and shielding feldspars and other liable grains from extensive dissolution. A change in the composition of the meteoric waters caused calcite dissolution leaving patches of cement. As Ch sands entered the compactional regime, saline and alkaline waters dissolved quartz grains and overgrowths as well as other liable grains no longer shielded by the early carbonate cement. The absence of cements and continued compaction resulted in concave-convex and sutured contacts. Dissolution and alteration of feldspars, alteration of micas to clays, and chloritization of biotite and clays continued in the compactional regime. Acidified waters released from organic matter and coal altered micas and feldspars to kaolinite and other clays, releasing Fe, Mg, and Ca necessary for late precipitation of ankerite, dolomite, and calcite cements. Extensive clay and Fe oxide coatings formed, filling embayments on the etched grains. During subsequent Pennsylvanian low sea level stands, ground water dissolved most carbonate cements, creating secondary porosity. Porosity was further enhanced on the outcrop belt during weathering, leaving higher total Fe oxide content on surface samples compared to core samples.

Fernandez, S.; Brenner, R.L. (Univ. of Iowa, Iowa City, IA (United States). Dept. of Geology)

1992-01-01T23:59:59.000Z

298

Zinc Oxide Modified with Benzylphosphonic Acids as Transparent Electrodes in Regular and Inverted Organic Solar Cell Structures  

E-Print Network [OSTI]

An approach is presented to modify the WF of solution-processed sol-gel derived ZnOover an exceptionally wide range of more than 2.3 eV. This approach relies on the formation of dense and homogeneous self-assembled monolayers based on phosphonic acids with different dipole moments. This allows us to apply ZnO as charge selective bottom electrodes in either regular or inverted solar cell structures, using P3HT:PCBM as the active layer. These devices compete with or even exceed the performance of the reference cell on ITO/PEDOT:PSS. Our finding challenges the current view that bottom electrodes in inverted solar cells need to be electron-blocking for good device performance.

Ilja Lange; Sina Reiter; Juliane Kniepert; Fortunato Piersimoni; Michael Paetzel; Jana Hildebrandt; Thomas Brenner; Stefan Hecht; Dieter Neher

2015-02-05T23:59:59.000Z

299

Quantitative Determination of Deuterium Atom Concentration in Zinc Oxide Thin Films by Time-of-Flight Secondary Ion Mass Spectrometry  

SciTech Connect (OSTI)

ZnO is a wide-gap semiconductor with very interesting electronic properties.[1,2] Therefore, it has been extensively studied for many years. It has been found that even low centrations of hydrogen in ZnO film can considerably change its electronic behavior.[3-5] Quite a few papers have discussed this issue but it has not been fully understood. Lack of experimental data, especially quantitative data on hydrogen concentration in ZnO samples is an important reason. Dynamic SIMS is the best technique to determine concentration of hydrogen atoms in materials.[6-9] However, it is a very specific technique and the entation is mostly available in semiconductor industry. ToF-SIMS is a more versatile instrument and it is more available in universities and research institutes. Background hydrogen interference has been known to be a serious problem in quantifying hydrogen atoms in solid samples. Although SIMS is an ultra-high vacuum (UHV) technique, there are still some residual gases existing in vacuum chambers during analysis. Most of them are H2, H2O or CH4, which lead to a background that greatly interferes quantitative detection of hydrogen. Therefore, deuterium atoms have been intentionally introduced into the system to avoid this problem. Standard samples are very important for SIMS quantitative analysis. A common method to prepare such kind of standard samples is ion-implanting. Therefore, a set of standard D-ZnO samples were prepared by ion-implanting in our work. In this paper, we report using ToF-SIMS to quantitatively determine the concentration of deuterium atoms in a number of high-quality epitaxial ZnO films, with a set of standard samples as references. We are especially interested in the detection limit of deuterium concentration in ZnO. In addition, hydrogen background interference was also investigated.

Zhu, Zihua; Shutthanandan, V.; Li, Yuanjie; Chambers, Scott A.

2009-03-01T23:59:59.000Z

300

175 MeV Au{sup +13} ion irradiation induced structural and morphological modifications in zinc oxide thin films  

SciTech Connect (OSTI)

Thin films of ZnO were deposited, on Si substrates, using the RF-sputtering technique and irradiated by the 175 MeV Au{sup +13} beams. The structural changes were investigated by x-ray diffraction (XRD) measurements. The particle size found to increase with the increasing ion fluence up to 1 Multiplication-Sign 10{sup 12} ion/cm{sup 2}. At highest irradiation fluence of 5 Multiplication-Sign 10{sup 12} ion/cm{sup 2} the average particle size decreases. The Raman spectroscopy measurements were performed to understand the local phonon mode of the samples. The surface morphology of the as-deposited and irradiated thin films is measured by the Atomic Force Microscopy (AFM).

Singh, Devendra [Materials Science Research Laboratory, Department of Physics, S. V. College, Aligarh 202001, UP (India); Sharma, Aditya [Materials Science Research Laboratory, Department of Physics, S. V. College, Aligarh 202001, UP (India) and Department of Applied Sciences and Humanities, Krishna Institute of Engineering and Technology, Ghaziabad-201206, U.P. (India); Varshney, Mayora; Verma, K. D. [Materials Science Research Laboratory, Department of Physics, S. V. College, Aligarh 202001, UP (India) and Department of Applied Sciences and Humanities, Krishna Institute of Engineering and Technolog (India); Kumar, Shalendra [School of Nano and Advanced Materials Engineering, Changwon National University, 9 Sarim-dong, Changwon- 641-773 (Korea, Republic of)

2013-02-05T23:59:59.000Z

Note: This page contains sample records for the topic "zinc oxide upper" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

ENS'07 Paris, France, 3-4 December 2007 ZINC OXIDE NANORODS AS AN INTRACELLULAR pH SENSOR  

E-Print Network [OSTI]

electrochemical probe is one which offers high sensitivity and real-time detection. pH sensor miniaturization towards the electrode surface, thereby providing an improved signal to noise ratio, faster response time to detect and monitor real changes in cell behavior using changes in the electrochemical potential

Paris-Sud XI, Université de

302

Phytoextraction of Zinc by Oat (Avena sativa), Barley (Hordeum vulgare), and Indian Mustard (Brassica juncea)  

Science Journals Connector (OSTI)

Phytoextraction of Zinc by Oat (Avena sativa), Barley (Hordeum vulgare), and Indian Mustard (Brassica juncea) ... When the point is reached where barley fails to maintain a high rate of Zn removal, chelate addition could then be used with B. juncea to solubilize residual Zn that had previously been unavailable for uptake. ...

Stephen D. Ebbs; Leon V. Kochian

1998-01-27T23:59:59.000Z

303

ON THE CORROSION RESISTANCE OF POROUS ELECTROPLATED ZINC COATINGS IN DIFFERENT CORROSIVE MEDIA  

E-Print Network [OSTI]

1 ON THE CORROSION RESISTANCE OF POROUS ELECTROPLATED ZINC COATINGS IN DIFFERENT CORROSIVE MEDIA Y(0)546457272. e-mail : fpedraza@univ-lr.fr Abstract The corrosion resistance of an electroplated (EP) Zn coating corrosive media (NaCl, NaOH and rain water). Four different faradaic relaxation processes were clearly

Paris-Sud XI, Université de

304

Events associated with restoration by zinc of meiosis in apomictic Saccharomyces cerevisiae.  

Science Journals Connector (OSTI)

...was not detected in A-P conditions. blance to those reported to accompany heat shock...imperfectly ordered zinc-induced tubulin sheets using cross-correlation and real space...meiotic systems. International Atomic Energy Agency, Vienna. 27. Moens, P. B...

C A Bilinski; J J Miller; S C Girvitz

1983-09-01T23:59:59.000Z

305

Intercombination lines of the zinc isoelectronic sequence for Z = 50–70  

Science Journals Connector (OSTI)

The intercombination lines of the zinc sequence corresponding to the transition 4s4p 3P1?4s2 1S0 have been observed for xenon, lanthanum, neodymium, europium, gadolinium, and ytterbium in the Princeton Large Torus tokamak discharges.

E. Hinnov; P. Beiersdorfer; R. Bell; J. Stevens; S. Suckewer; S. von Goeler; A. Wouters; D. Dietrich; M. Gerassimenko; E. Silver

1987-06-01T23:59:59.000Z

306

Kinetics of Zinc/ Arsenate Co-Sorption at the Goethite-Water Interface. (5827)  

E-Print Network [OSTI]

of aging time. Arsenate and zinc formed adamite-like and koettigite-like surface precipitates on goethite and was cyclic for the adamite and koettigite-like surface precipitates reflecting the concentric and plane-layered structures of adamite and koettigite, respectively. Speaker Information: Markus Grafe, University of Delaware

Sparks, Donald L.

307

The effect of zinc methionine or copper lysine on stocker calves grazing oat pastures  

E-Print Network [OSTI]

Fourty eight Hereford and Angus stocker steers (average weight 259.7 kg) were placed in twelve, five acre, pastures (four steers per pasture) planted with oat forage for a 91 d grazing trial to determine the effect of supplementing zinc methionine...

Griffeth, Laura Ann

1993-01-01T23:59:59.000Z

308

Zinc and mechanical prowess in the jaws of Nereis, a marine worm  

E-Print Network [OSTI]

Zinc and mechanical prowess in the jaws of Nereis, a marine worm Helga C. Lichtenegger* , Thomas of the marine polychaete worm Nereis sp. High copper levels in the polychaete worm Glycera dibranchiata recently and mechanical properties such as fracture toughness, wear resistance, and hardness (1). Invertebrate jaws

Lichtenegger, Helga C.

309

Zinc in the sediments, water and biota of Lake Burley Griffin, Canberra  

E-Print Network [OSTI]

polluted by heavy metals, especially zinc. Benthic invertebrates have been shown to be depauperate in biomass and diversity and this has been attributed to heavy metal pollution (Weatherley et al., 0048) and water (0.018 :I: 0.002 mgikg) with those before remedial works were performed in 1974to control a metal

Canberra, University of

310

Zinc-dependent Interaction between Dishevelled and the Drosophila Wnt Antagonist Naked Cuticle*  

E-Print Network [OSTI]

development, the naked cuticle (nkd) gene attenuates wingless/Wnt signaling through a negative feedback loop mechanism. Fly and vertebrate Nkd proteins contain a putative calcium-binding EF- hand motif, the EFX domain of the chelating agent EDTA abolished the in vitro Nkd-Dsh interaction. Surprisingly zinc, but not calcium

Quake, Stephen R.

311

Fluorophore-linked zinc(II)dipicolylamine coordination complexes as sensors for  

E-Print Network [OSTI]

Fluorophore-linked zinc(II)dipicolylamine coordination complexes as sensors for phosphatidylserine with an attached NBD fluorophore are synthesized and evaluated as fluorescent sensors. The sensors do not respond in the presence of anionic vesicles. A sensor with two Zn2C ­DPA units and a hydrophilic tris(ethyleneoxy) linker

Smith, Bradley D.

312

Sequence-specific modification of mitochondrial DNA using a chimeric zinc finger methylase  

Science Journals Connector (OSTI)

...fingers F1, F2, and F3 are listed below with a single-letter code. The fingers F1, F2, and F3 are represented by {alpha}-helix and two {beta}-strands stabilized by a zinc ion...tag-specific primer containing additionally NES sequence from NS2 protein of Minute virus of mice (VDEMTKKFGTLTIHDTEK) and BamHI...

Michal Minczuk; Monika A. Papworth; Paulina Kolasinska; Michael P. Murphy; Aaron Klug

2006-01-01T23:59:59.000Z

313

Engineering a DNA-cleaving DNAzyme and PCR into a simple sensor for zinc ion detection  

Science Journals Connector (OSTI)

The development of a simple sensor (9NL27-Zn) based on DNAzyme and PCR and aimed at the detection of low concentrations of zinc (II) ions is described. A specific Zn(II)-dependent DNAzyme (9NL27) with DNA-clea...

Jiacui Xu; Yanhong Sun; Yongjie Sheng; Yanqun Fei…

2014-05-01T23:59:59.000Z

314

Deprotonative metallation of ferrocenes using mixed lithium-zinc and lithium-cadmium combinations  

E-Print Network [OSTI]

). It is pertinent to mention that lithium bases were previously used to deprotonate the acetal 3, albeit at lower1 Deprotonative metallation of ferrocenes using mixed lithium-zinc and lithium-cadmium combinations on the web Xth XXXXXXXXX 200X DOI: 10.1039/b000000x A mixed lithium-cadmium amide and a combination

Boyer, Edmond

315

Computational Investigation of Irreversible Inactivation of the Zinc-Dependent Protease Carboxypeptidase A  

E-Print Network [OSTI]

- + CH3Cl SN2 reaction fragment. Point charge models representing the active site reproduced energetics from full MO calculations at 12.0 Ã? separation between the zinc and the central carbon of the SN2 of this structure led to the barrierless SN2 displacement of the iodide of the inhibitor by Glu-270, assisted

Schlegel, H. Bernhard

316

Thermally Oxidized Silicon  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Anneli Munkholm (Lumileds Lighting) and Sean Brennan (SSRL) Anneli Munkholm (Lumileds Lighting) and Sean Brennan (SSRL) Illustration of the silicon positions near the Si-SiO2 interface for a 4° miscut projected onto the ( ) plane. The silicon atoms in the substrate are blue and those in the oxide are red. The small black spots represent the translated silicon positions in the absence of static disorder. The silicon atoms in the oxide have been randomly assigned a magnitude and direction based on the static disorder value at that position in the lattice. The outline of four silicon unit cells is shown in black, whereas the outline of four expanded lattice cells in the oxide is shown in blue One of the most studied devices of modern technology is the field-effect transistor, which is the basis for most integrated circuits. At its heart

317

Oxidative Tritium Decontamination System  

SciTech Connect (OSTI)

The Princeton Plasma Physics Laboratory, Tritium Systems Group has developed and fabricated an Oxidative Tritium Decontamination System (OTDS), which is designed to reduce tritium surface contamination on various components and items. The system is configured to introduce gaseous ozone into a reaction chamber containing tritiated items that require a reduction in tritium surface contamination. Tritium surface contamination (on components and items in the reaction chamber) is removed by chemically reacting elemental tritium to tritium oxide via oxidation, while purging the reaction chamber effluent to a gas holding tank or negative pressure HVAC system. Implementing specific concentrations of ozone along with catalytic parameters, the system is able to significantly reduce surface tritium contamination on an assortment of expendable and non-expendable items. This paper will present the results of various experimentation involving employment of this system.

Charles A. Gentile; John J. Parker; Gregory L. Guttadora; Lloyd P. Ciebiera

2002-02-11T23:59:59.000Z

318

Methanol partial oxidation reformer  

DOE Patents [OSTI]

A partial oxidation reformer comprising a longitudinally extending chamber having a methanol, water and an air inlet and an outlet. An igniter mechanism is near the inlets for igniting a mixture of methanol and air, while a partial oxidation catalyst in the chamber is spaced from the inlets and converts methanol and oxygen to carbon dioxide and hydrogen. Controlling the oxygen to methanol mole ratio provides continuous slightly exothermic partial oxidation reactions of methanol and air producing hydrogen gas. The liquid is preferably injected in droplets having diameters less than 100 micrometers. The reformer is useful in a propulsion system for a vehicle which supplies a hydrogen-containing gas to the negative electrode of a fuel cell.

Ahmed, Shabbir (Bolingbrook, IL); Kumar, Romesh (Naperville, IL); Krumpelt, Michael (Naperville, IL)

1999-01-01T23:59:59.000Z

319

Methanol partial oxidation reformer  

DOE Patents [OSTI]

A partial oxidation reformer comprising a longitudinally extending chamber having a methanol, water and an air inlet and an outlet. An igniter mechanism is near the inlets for igniting a mixture of methanol and air, while a partial oxidation catalyst in the chamber is spaced from the inlets and converts methanol and oxygen to carbon dioxide and hydrogen. Controlling the oxygen to methanol mole ratio provides continuous slightly exothermic partial oxidation reactions of methanol and air producing hydrogen gas. The liquid is preferably injected in droplets having diameters less than 100 micrometers. The reformer is useful in a propulsion system for a vehicle which supplies a hydrogen-containing gas to the negative electrode of a fuel cell.

Ahmed, Shabbir (Bolingbrook, IL); Kumar, Romesh (Naperville, IL); Krumpelt, Michael (Naperville, IL)

2001-01-01T23:59:59.000Z

320

Methanol partial oxidation reformer  

DOE Patents [OSTI]

A partial oxidation reformer is described comprising a longitudinally extending chamber having a methanol, water and an air inlet and an outlet. An igniter mechanism is near the inlets for igniting a mixture of methanol and air, while a partial oxidation catalyst in the chamber is spaced from the inlets and converts methanol and oxygen to carbon dioxide and hydrogen. Controlling the oxygen to methanol mole ratio provides continuous slightly exothermic partial oxidation reactions of methanol and air producing hydrogen gas. The liquid is preferably injected in droplets having diameters less than 100 micrometers. The reformer is useful in a propulsion system for a vehicle which supplies a hydrogen-containing gas to the negative electrode of a fuel cell. 7 figs.

Ahmed, S.; Kumar, R.; Krumpelt, M.

1999-08-17T23:59:59.000Z

Note: This page contains sample records for the topic "zinc oxide upper" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

Methanol partial oxidation reformer  

DOE Patents [OSTI]

A partial oxidation reformer is described comprising a longitudinally extending chamber having a methanol, water and an air inlet and an outlet. An igniter mechanism is near the inlets for igniting a mixture of methanol and air, while a partial oxidation catalyst in the chamber is spaced from the inlets and converts methanol and oxygen to carbon dioxide and hydrogen. Controlling the oxygen to methanol mole ratio provides continuous slightly exothermic partial oxidation reactions of methanol and air producing hydrogen gas. The liquid is preferably injected in droplets having diameters less than 100 micrometers. The reformer is useful in a propulsion system for a vehicle which supplies a hydrogen-containing gas to the negative electrode of a fuel cell. 7 figs.

Ahmed, S.; Kumar, R.; Krumpelt, M.

1999-08-24T23:59:59.000Z

322

E-Print Network 3.0 - amputated upper limb Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

daily tasks 7-9. Currently, rotation of upper-limb prostheses... of a small permanent magnet into the distal residual bone of an upper-limb amputee 9. The magnet...

323

Response of upper ocean currents to typhoons at two ADCP moorings west of the Luzon Strait  

Science Journals Connector (OSTI)

We deployed two ADCP mooring systems west of the Luzon Strait in August 2008, and measured the upper ocean currents at high frequency. Two typhoons passed over ... , we studied the response of the upper ocean to ...

Fei Chen ??; Yan Du ??; Li Yan ??…

2010-09-01T23:59:59.000Z

324

A Note on Amphibians and Reptiles in the Upper Río Chagres Basin, Panama  

Science Journals Connector (OSTI)

Twenty-nine amphibians and six reptiles were recorded at a site in the upper Río Chagres basin at the confluence of the Río Chagrecito with the upper Río Chagres. Most of them are assumed to be the common spec...

Roberta Ibáñez D.

2005-01-01T23:59:59.000Z

325

Tetraalklylammonium polyoxoanionic oxidation catalysts  

DOE Patents [OSTI]

Alkanes are catalytically oxidized in air or oxygen using iron-substituted polyoxoanions (POAs) of the formula: H{sub e{minus}z}[(n-C{sub 4}H{sub 9}){sub 4}N]{sub z}(XM{sub 11}M{prime}O{sub 39}){sup {minus}e}. The M{prime} (e.g., iron(III)/iron(II)) reduction potential of the POAs is affected by selection of the central atom X and the framework metal M, and by the number of tetrabutyl-ammonium groups. Decreased Fe(III)/Fe(II) reduction potential has been found to correlate to increased oxidation activity.

Ellis, P.E.; Lyons, J.E.; Myers, H.K. Jr.; Shaikh, S.N.

1998-10-06T23:59:59.000Z

326

Tetraalykylammonium polyoxoanionic oxidation catalysts  

DOE Patents [OSTI]

Alkanes are catalytically oxidized in air or oxygen using iron-substituted polyoxoanions (POAs) of the formula: H.sub.e-z ›(n-C.sub.4 H.sub.9).sub.4 N!.sub.z (XM.sub.11 M'O.sub.39).sup.-e The M' (e.g., iron(III)/iron(II)) reduction potential of the POAs is affected by selection of the central atom X and the framework metal M, and by the number of tetrabutyl-ammonium groups. Decreased Fe(III)/Fe(II) reduction potential has been found to correlate to increased oxidation activity.

Ellis, Paul E. (Downingtown, PA); Lyons, James E. (Wallingford, PA); Myers, Jr., Harry K. (Cochranville, PA); Shaikh, Shahid N. (Media, PA)

1998-01-01T23:59:59.000Z

327

Electrochemical Quartz Crystal Microbalance Studies of Electron Addition at Nanocrystalline Tin Oxide/Water and Zinc Oxide/Water Interfaces: Evidence for  

E-Print Network [OSTI]

with previous results for titanium dioxide in nonaqueous electrolytes, suggest that charge-compensating cation that electron addition to the nanocrys- talline titanium dioxide/nonaqueous electrolyte interface is accompanied quantitatively by the intercalation of charge- compensating alkali metal cations or by adsorption of larger

328

A Porphyrin-Stabilized Iridium Oxide Water Oxidation Catalyst  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

A Porphyrin-Stabilized Iridium Oxide Water Oxidation Catalyst Authors: Sherman, B. D., Pillai, S., Kodis, G., Bergkamp, J., Mallouk, T. E., Gust, D., Moore, T. A., and Moore, A. L....

329

Free energy, enthalpy, and entropy changes for the transference of zinc chloride from enthylene glycol to water solutions  

E-Print Network [OSTI]

in ethylene glycol is coupled with a silver-silver chloride half-cell, also containing zinc chloride dissolved in ethylene glycol, and if a similar cell with zinc chloride in aqueous solution are put back to back by use of a common amalgam reservoir...FREE ENERGY, ENTlDKPY, AND ENTROPY CHANGES FOR THE TRANCE OF ZINC CHLORIDE FROM ETHYLENE GLYCOL TO WATER SOLUTIONS A Thesis JOHN NICHOLAS'8 LOMONTE Submitted to the Graduate School of' the Agricultural and. Mechanical College of' Texas...

Lomonte, John Nicholas

1960-01-01T23:59:59.000Z

330

Oxidative Reforming of Biodiesel Over Molybdenum (IV) Oxide  

E-Print Network [OSTI]

as potential feedstock in solid oxide fuel cells. Petroleum based fuels become scarcer daily, and biodiesel for use in solid oxide fuel cells. This cutting edge area of research continues to be important as energy prove useful for solid oxide fuel cells. METHODS Commercial molybdenum dioxide was used for all tests

Collins, Gary S.

331

Highly oxidized superconductors  

DOE Patents [OSTI]

Novel superconducting materials in the form of compounds, structures or phases are formed by performing otherwise known synthesis in a highly oxidizing atmosphere rather than that created by molecular oxygen at atmospheric pressure or below. This leads to the successful synthesis of novel superconducting compounds which are thermodynamically stable at the conditions under which they are formed. 16 figs.

Morris, D.E.

1994-09-20T23:59:59.000Z

332

Geology of the Upper Schep Creek area, Mason County, Texas  

E-Print Network [OSTI]

of the Llano uplift in Central Texas. The location and shape of tbe area are shown in Figure l. As the nano inplies, the upper part of Schep creek, as well as ths west branch of Panther Creek, &re within the area, ACCESSIBILITY Accessibility by road... is oausod by two internittont streans that aro deeply inoised into this plateau. The west branob of Panther Creek, which is the eastern nest stress, has developed a network of very short steep lateral oanyons in the areas of resistant Iinestone outorops...

Marshall, Hollis Dale

2012-06-07T23:59:59.000Z

333

Upper limits on charm-changing neutral-current interactions  

E-Print Network [OSTI]

parallel decays can be computed with NII =N„e(l+l )8(c l X), where N„ is the number of cc events, e(1+I ) is the detection efficiency for parallel decays, and 8(c l X) is the average semileptonic branching ratio of the charmed hadrons in the continuum...VOLUME 60, NUMBER 16 PHYSICAL REVIEW LETTERS 18 APRIL 1988 Upper Limits on Charm-Changing Neutral-Current Interactions P. Haas, ' M. Hempstead, ' T. Jensen, ' D. R. Johnson, ' H. Kagan, ' R. Kass, ' P. Baringer, R. L. McIlwain, D. H. Miller, C. R...

Baringer, Philip S.

1988-04-18T23:59:59.000Z

334

Staged membrane oxidation reactor system  

DOE Patents [OSTI]

Ion transport membrane oxidation system comprising (a) two or more membrane oxidation stages, each stage comprising a reactant zone, an oxidant zone, one or more ion transport membranes separating the reactant zone from the oxidant zone, a reactant gas inlet region, a reactant gas outlet region, an oxidant gas inlet region, and an oxidant gas outlet region; (b) an interstage reactant gas flow path disposed between each pair of membrane oxidation stages and adapted to place the reactant gas outlet region of a first stage of the pair in flow communication with the reactant gas inlet region of a second stage of the pair; and (c) one or more reactant interstage feed gas lines, each line being in flow communication with any interstage reactant gas flow path or with the reactant zone of any membrane oxidation stage receiving interstage reactant gas.

Repasky, John Michael; Carolan, Michael Francis; Stein, VanEric Edward; Chen, Christopher Ming-Poh

2012-09-11T23:59:59.000Z

335

Staged membrane oxidation reactor system  

DOE Patents [OSTI]

Ion transport membrane oxidation system comprising (a) two or more membrane oxidation stages, each stage comprising a reactant zone, an oxidant zone, one or more ion transport membranes separating the reactant zone from the oxidant zone, a reactant gas inlet region, a reactant gas outlet region, an oxidant gas inlet region, and an oxidant gas outlet region; (b) an interstage reactant gas flow path disposed between each pair of membrane oxidation stages and adapted to place the reactant gas outlet region of a first stage of the pair in flow communication with the reactant gas inlet region of a second stage of the pair; and (c) one or more reactant interstage feed gas lines, each line being in flow communication with any interstage reactant gas flow path or with the reactant zone of any membrane oxidation stage receiving interstage reactant gas.

Repasky, John Michael; Carolan, Michael Francis; Stein, VanEric Edward; Chen, Christopher Ming-Poh

2014-05-20T23:59:59.000Z

336

Staged membrane oxidation reactor system  

DOE Patents [OSTI]

Ion transport membrane oxidation system comprising (a) two or more membrane oxidation stages, each stage comprising a reactant zone, an oxidant zone, one or more ion transport membranes separating the reactant zone from the oxidant zone, a reactant gas inlet region, a reactant gas outlet region, an oxidant gas inlet region, and an oxidant gas outlet region; (b) an interstage reactant gas flow path disposed between each pair of membrane oxidation stages and adapted to place the reactant gas outlet region of a first stage of the pair in flow communication with the reactant gas inlet region of a second stage of the pair; and (c) one or more reactant interstage feed gas lines, each line being in flow communication with any interstage reactant gas flow path or with the reactant zone of any membrane oxidation stage receiving interstage reactant gas.

Repasky, John Michael; Carolan, Michael Francis; Stein, VanEric Edward; Chen, Christopher Ming-Poh

2013-04-16T23:59:59.000Z

337

Anode shroud for off-gas capture and removal from electrolytic oxide reduction system  

DOE Patents [OSTI]

An electrolytic oxide reduction system according to a non-limiting embodiment of the present invention may include a plurality of anode assemblies and an anode shroud for each of the anode assemblies. The anode shroud may be used to dilute, cool, and/or remove off-gas from the electrolytic oxide reduction system. The anode shroud may include a body portion having a tapered upper section that includes an apex. The body portion may have an inner wall that defines an off-gas collection cavity. A chimney structure may extend from the apex of the upper section and be connected to the off-gas collection cavity of the body portion. The chimney structure may include an inner tube within an outer tube. Accordingly, a sweep gas/cooling gas may be supplied down the annular space between the inner and outer tubes, while the off-gas may be removed through an exit path defined by the inner tube.

Bailey, James L.; Barnes, Laurel A.; Wiedmeyer, Stanley G.; Williamson, Mark A.; Willit, James L.

2014-07-08T23:59:59.000Z

338

Ultrafast Graphene Oxide Humidity Sensors  

Science Journals Connector (OSTI)

Ultrafast Graphene Oxide Humidity Sensors ... Graphene oxide can be exploited in humidity and temperature sensors with a number of convenient features such as flexibility, transparency and suitability for large-scale manufacturing. ... Here we show that the two-dimensional nature of graphene oxide and its superpermeability to water combine to enable humidity sensors with unprecedented response speed (?30 ms response and recovery times). ...

Stefano Borini; Richard White; Di Wei; Michael Astley; Samiul Haque; Elisabetta Spigone; Nadine Harris; Jani Kivioja; Tapani Ryhänen

2013-11-09T23:59:59.000Z

339

Doped palladium containing oxidation catalysts  

DOE Patents [OSTI]

A supported oxidation catalyst includes a support having a metal oxide or metal salt, and mixed metal particles thereon. The mixed metal particles include first particles including a palladium compound, and second particles including a precious metal group (PMG) metal or PMG metal compound, wherein the PMG metal is not palladium. The oxidation catalyst may also be used as a gas sensor.

Mohajeri, Nahid

2014-02-18T23:59:59.000Z

340

Combined upper limit for SM Higgs at the Tevatron  

SciTech Connect (OSTI)

We combine results from CDF and D0 on direct searches for a standard model (SM) Higgs boson (H) in p{bar p} collisions at the Fermilab Tevatron at {radical}s = 1.96 TeV. Compared to the previous Higgs Tevatron combination, more data and new channels (WH {yields} {tau}{nu}b{bar b}, VH {yields} {tau}{tau}b{bar b}/jj{tau}{tau}, VH {yields} jjb{bar b}, t{bar t}H {yields} t{bar t}b{bar b}) have been added. Most previously used channels have been reanalyzed to gain sensitivity. We use the latest parton distribution functions and gg {yields} H theoretical cross sections when comparing our limits to the SM predictions. With 2.0-3.6 fb{sup -1} of data analyzed at CDF, and 0.9-4.2 fb{sup -1} at D0, the 95%C.L. upper limits on Higgs boson production are a factor of 2.5 (0.86) times the SM cross section for a Higgs boson mass of m{sub H} = 115 (165) GeV/c{sup 2}. Based on simulation, the corresponding median expected upper limits are 2.4 (1.1). The mass range excluded at 95% C.L. for a SM Higgs has been extended to 160 < m{sub H} < 170 GeV/c{sup 2}.

Penning, Bjorn; /Fermilab

2009-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "zinc oxide upper" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

Natural and synthetic double-stranded DNA binding studies of macrocyclic tetraamine zinc(II) complexes appended with polyaromatic groups  

Science Journals Connector (OSTI)

...?The characteristic binding mode of zinc(II) complexes of macrocyclic tetraamines (1,4,7,10-tetraazacyclododecane, cyclen) appended with one or two arylmethyl group(s) [(4-quinolyl)methyl-, 1,7-bis(4-quinolyl)...

Emiko Kikuta; Naomi Katsube; E. Kimura

1999-08-01T23:59:59.000Z

342

Influence of Activation (Reduction) Conditions on the Catalytic Activity of Copper-Zinc Catalysts of NTK-10 Series  

Science Journals Connector (OSTI)

X-ray phase analysis and the temperature-programmed reduction method were applied to study the activation (reduction) of copper-zinc catalysts of the NTK-10 series. The catalytic activity of catalysts reduced ...

P. D. Androsov; I. A. Mamaeva; E. Z. Golosman

2004-07-01T23:59:59.000Z

343

Graphene and Graphene Oxide: Biofunctionalization and Applications...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

and Graphene Oxide: Biofunctionalization and Applications in Biotechnology. Graphene and Graphene Oxide: Biofunctionalization and Applications in Biotechnology. Abstract: Graphene...

344

Open-tube method for diffusion of zinc into GaAs  

SciTech Connect (OSTI)

Highly reproducible zinc diffusions from 0.03 to 1.5 /mu/m have been made into GaAs using a CVD zinc-doped silica source capped with phosphosilicate glass. This structure permitted the use of an open-tube, flowing inert gas diffusion system. Diffusions were made from 400/degree/ to 700/degree/C, with surface hole concentrations from 0.1 to 1.0*10/sup 20/ cm/sup -3/, and junction depths from 300A to 1.5 /mu/m. The diffusion coefficient and the hole concentration obtained by this technique are very close to those obtained by sealed ampul techniques using a Zn/sub 3/A/sub 2/ source. However, this open-tube system is more convenient to use, and gives highly reproducible results. 13 refs.

Field, R.J.; Ghandhi, S.K.

1982-07-01T23:59:59.000Z

345

Zinc and cadmium residues in striped bass from Cherokee, Norris, and Watts Bar reservoirs  

SciTech Connect (OSTI)

Zinc and cadmium concentrations in muscle, liver, and kidney were measured in striped bass (Morone saxatilis) from Cherokee, Norris, and Watts Bar reservoirs in East Tennessee to determine if these metals had contributed to fish kills observed in Cherokee during the 1970's. The range of mean concentrations of zinc from collections of Cherokee striped bass (muscle 11-14, liver 98-106, kidney 88-105 mg Zn/kg dry weight) were comparable to ranges in fish from Norris and Watts Bar (muscle 12-13, liver 83-132, kidney 96-108 mg/kg dry weight). With the exception of concentrations in the kidneys of one collection, cadmium residues from Cherokee striped bass (muscle 0.02-0.09, liver 0.3-0.7, kidney 0.2-4.0 mg Cd/kg dry weight) were also similar to residues from Norris and Watts Bar fish (muscle 0.05-0.13, liver 0.3-2.1, kidney 0.3-0.5 mg Cd/kg dry weight). There were significant differences in tissue residues among seasons (summer 1979, spring 1980, summer 1980) in Cherokee Reservoir, as well as significant differences among the three reservoirs (Cherokee, Norris, Watts Bar) during the same season (spring 1980). All concentrations, however, were well below those reported for fish exposed to the maximum non-harmful concentrations of zinc and the lowest potentially harmful concentration of cadmium and moreover, were within the range typically reported for fish tissues. It is, therefore, believed that in at least the last two years, zinc and cadmium in the tissues of striped bass from Cherokee Reservoir have not been harmful to the fish.

Tisa, M.S.; Strange, R.J.

1981-10-01T23:59:59.000Z

346

Ab initio study of phase transition of boron nitride between zinc-blende and rhombohedral structures  

SciTech Connect (OSTI)

Boron nitride has polymorphs such as zinc-blende (c-BN), wurtzite (w-BN), rhombohedral (r-BN), and graphite-like (h-BN) forms. We simulate the direct conversion of r-BN to c-BN through electronic excitation. In our calculation, the conversion is made possible by increasing the hole concentration to over 0.06/atom. This conversion should be experimentally possible by hole-doping via an electric double layer transistor (EDLT) or capacitor.

Nishida, S.; Funashima, H.; Sato, K.; Katayama-Yoshida, H. [Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka 560-8531 (Japan)

2013-12-04T23:59:59.000Z

347

Upper crustal structure of an obliquely extending orogen, central Coso  

Open Energy Info (EERE)

structure of an obliquely extending orogen, central Coso structure of an obliquely extending orogen, central Coso Range, eastern California Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Proceedings: Upper crustal structure of an obliquely extending orogen, central Coso Range, eastern California Details Activities (1) Areas (1) Regions (0) Abstract: The Coso Range is an extensional domain in a releasing stepover between major dextral strike-slip faults along the southeastern margin of the Sierra Nevada Microplate. New multifold seismic reflection data from the Coso geothermal field in the central Coso Range image reflectors that resemble suites of structural and magmatic features exposed in many exhumed metamorphic core complexes (MCC). The Coso Wash Fault, a Holocene-active normal fault that is a locus of surface geothermal activity, is imaged as a

348

Upper Marlboro, Maryland: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Marlboro, Maryland: Energy Resources Marlboro, Maryland: Energy Resources (Redirected from Upper Marlboro, MD) Jump to: navigation, search Equivalent URI DBpedia Coordinates 38.8159473°, -76.7496909° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":38.8159473,"lon":-76.7496909,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

349

Upper crustal faulting in an obliquely extending orogen, structural control  

Open Energy Info (EERE)

faulting in an obliquely extending orogen, structural control faulting in an obliquely extending orogen, structural control on permeability and production in the Coso Geothermal Field, eastern California Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Proceedings: Upper crustal faulting in an obliquely extending orogen, structural control on permeability and production in the Coso Geothermal Field, eastern California Details Activities (1) Areas (1) Regions (0) Abstract: New multifold seismic reflection data from the Coso geothermal field in the central Coso Range, eastern California, image brittle faults and other structures in a zone of localized crustal extension between two major strike-slip faults. The Coso Wash fault, a Quaternary-active normal fault that is a locus of surface geothermal activity, is well-imaged as a

350

Integrated solar upper stage (ISUS) space demonstration design  

Science Journals Connector (OSTI)

High temperature solar thermal propulsion/power systems will enable the placement of higher power satellite systems launched from smaller less expensive launch vehicles. The on-going Integrated Solar Upper Stage (ISUS) Program sponsored by Phillips Laboratory is one such solar thermal system. A system test of an engine ground test configuration of ISUS is planned for Spring 1997. The next step in the development of the ISUS system will be a flight demonstration mission. This paper details the conceptual designs for two potential ISUS space demonstration configurations. These designs were developed with a design-to-cost philosophy for a LEO (low Earth orbit) to GEO (geosynchronous equatorial orbit) and LEO to HEEO (highly elliptical Earth orbit) flight demonstration missions. Design considerations included packaging within the selected launch vehicle fairings (Pegasus XL and SSLV Taurus) system performance propellant selection ( H 2 CH 4 or NH 3 ) and 100–150 watts of power production using thermionic diodes.

Patrick Frye

1997-01-01T23:59:59.000Z

351

Low-energy Coulomb excitation of neutron-rich zinc isotopes  

SciTech Connect (OSTI)

At the radioactive ion beam facility REX-ISOLDE, neutron-rich zinc isotopes were investigated using low-energy Coulomb excitation. These experiments have resulted in B(E2,2{sub 1}{sup +}{yields}0{sub 1}{sup +}) values in {sup 74-80}Zn, B(E2,4{sub 1}{sup +}{yields}2{sub 1}{sup +}) values in {sup 74,76}Zn and the determination of the energy of the first excited 2{sub 1}{sup +} states in {sup 78,80}Zn. The zinc isotopes were produced by high-energy proton- (A=74,76,80) and neutron- (A=78) induced fission of {sup 238}U, combined with selective laser ionization and mass separation. The isobaric beam was postaccelerated by the REX linear accelerator and Coulomb excitation was induced on a thin secondary target, which was surrounded by the MINIBALL germanium detector array. In this work, it is shown how the selective laser ionization can be used to deal with the considerable isobaric beam contamination and how a reliable normalization of the experiment can be achieved. The results for zinc isotopes and the N=50 isotones are compared to collective model predictions and state-of-the-art large-scale shell-model calculations, including a recent empirical residual interaction constructed to describe the present experimental data up to 2004 in this region of the nuclear chart.

Walle, J. van de [Instituut voor Kern-en Stralingsfysica, K. U. Leuven, Leuven (Belgium); ISOLDE, CERN, Geneva (Switzerland); Aksouh, F. [Instituut voor Kern-en Stralingsfysica, K. U. Leuven, Leuven (Belgium); CEA Saclay, DAPNIA/SPhN, Gif-sur-Yvette (France); Behrens, T.; Gernhauser, R.; Kroell, T.; Kruecken, R. [Physik Department E12, Technische Universitaet Muenchen, Garching (Germany); Bildstein, V. [Physik Department E12, Technische Universitaet Muenchen, Garching (Germany); Max-Planck-Institut fuer Kernphysik, Heidelberg (Germany); Blazhev, A.; Eberth, J.; Jolie, J.; Reiter, P.; Warr, N.; Weisshaar, D. [Institut fuer Kernphysik, Universitaet Koeln, Koeln (Germany); Cederkaell, J.; Delahaye, P.; Fedosseev, V. N.; Franchoo, S.; Marsh, B. A.; Sieber, T.; Voulot, D. [ISOLDE, CERN, Geneva (Switzerland)] (and others)

2009-01-15T23:59:59.000Z

352

Cadmium and zinc concentrations in the potable water of the Eastern Province of Saudi Arabia  

SciTech Connect (OSTI)

The effects of acute cadmium poisoning on humans are very serious. Among them are hypertension, cardiovascular disorders, kidney damage and destruction of red blood cells and testicular tissues. It is believed that much of the physiological action of cadmium is due to its replacement of zinc in some enzymes thereby impairing its catalytic activity. Previous studies on rats indicated that the dietary level of zinc can influence susceptibility to cadmium. The Eastern Province of the Kingdom of Saudi Arabia is undergoing extensive industrialization, crude oil exploration, production, processing and exportation. All of these are sources of trace heavy metal pollution. It is inhabited by a population where private and public water wells, particularly in the rural areas, are in most cases the major source of potable water. This paper deals with the determination of cadmium and zinc concentration in the potable water of the Eastern Province in order to generate baseline data to enable the medically qualified members of the research team to study the possible relationship between these two ions and cardiovascular morbidity in the population consuming this water.

Mustafa, H.T.; Hassan, H.M.A.; Abo-Melha, A.; Rihan, T.I.

1988-03-01T23:59:59.000Z

353

Cadmium-free junction fabrication process for CuInSe.sub.2 thin film solar cells  

DOE Patents [OSTI]

The present invention provides an economical, simple, dry and controllable semiconductor layer junction forming process to make cadmium free high efficiency photovoltaic cells having a first layer comprised primarily of copper indium diselenide having a thin doped copper indium diselenide n-type region, generated by thermal diffusion with a group II(b) element such as zinc, and a halide, such as chlorine, and a second layer comprised of a conventional zinc oxide bilayer. A photovoltaic device according the present invention includes a first thin film layer of semiconductor material formed primarily from copper indium diselenide. Doping of the copper indium diselenide with zinc chloride is accomplished using either a zinc chloride solution or a solid zinc chloride material. Thermal diffusion of zinc chloride into the copper indium diselenide upper region creates the thin n-type copper indium diselenide surface. A second thin film layer of semiconductor material comprising zinc oxide is then applied in two layers. The first layer comprises a thin layer of high resistivity zinc oxide. The second relatively thick layer of zinc oxide is doped to exhibit low resistivity.

Ramanathan, Kannan V. (Lakewood, CA); Contreras, Miguel A. (Golden, CA); Bhattacharya, Raghu N. (Littleton, CA); Keane, James (Lakewood, CA); Noufi, Rommel (Golden, CA)

1999-01-01T23:59:59.000Z

354

Oxidation resistant alloys, method for producing oxidation resistant alloys  

DOE Patents [OSTI]

A method for producing oxidation-resistant austenitic alloys for use at temperatures below 800.degree. C. comprising of: providing an alloy comprising, by weight %: 14-18% chromium, 15-18% nickel, 1-3% manganese, 1-2% molybdenum, 2-4% silicon, 0% aluminum and the balance being iron; heating the alloy to 800.degree. C. for between 175-250 hours prior to use in order to form a continuous silicon oxide film and another oxide film. The method provides a means of producing stainless steels with superior oxidation resistance at temperatures above 700.degree. C. at a low cost

Dunning, John S. (Corvallis, OR); Alman, David E. (Salem, OR)

2002-11-05T23:59:59.000Z

355

Oxidation resistant alloys, method for producing oxidation resistant alloys  

DOE Patents [OSTI]

A method for producing oxidation-resistant austenitic alloys for use at temperatures below 800 C. comprising of: providing an alloy comprising, by weight %: 14-18% chromium, 15-18% nickel, 1-3% manganese, 1-2% molybdenum, 2-4% silicon, 0% aluminum and the balance being iron; heating the alloy to 800 C. for between 175-250 hours prior to use in order to form a continuous silicon oxide film and another oxide film. The method provides a means of producing stainless steels with superior oxidation resistance at temperatures above 700 C. at a low cost

Dunning, John S.; Alman, David E.

2002-11-05T23:59:59.000Z

356

Zinc isotope systematics in snow and ice accretions in Central European mountains  

Science Journals Connector (OSTI)

Abstract Zinc (Zn) pollution negatively affects human and ecosystem health. We quantified atmospheric Zn inputs at six remote mountain-top locations in the Czech Republic (Central Europe), and used ?66Zn isotope ratios to identify Zn from different pollution sources. The study sites were located at an elevation of approximately 1000 m near the state borders with Germany and Poland. During two winter seasons (2009–2010), over 400 samples of vertical deposition (snow) and horizontal deposition (ice accretions) were collected. Zinc pollution levels were generally low. Zinc concentrations in snow and ice accretions were less than twice as high in the east, compared to the west. Across the sites, over 90% of Zn was present in a weak-acid soluble form. Zinc concentrations were 5 times higher in ice accretions, which formed from small droplets originating in the basal cloud layer, rich in pollutants, than in snow. In contrast, droplets resulting in snow formation were larger and scavenged less pollution due to their smaller surface area. ?66Zn of Pribram sphalerite (west) and smelter-derived fly ash (west) were low, ? 0.23 and ? 0.47‰, respectively. Olkusz sphalerite (east) had a higher ?66Zn of 0.02‰. ?66Zn of snow ranged from ? 0.60 to 0.68‰. Ice accretions had ?66Zn between ? 0.67 and 0.14‰. At the three eastern sites, ?66Zn of ice accretions was lower than ?66Zn of snow, suggesting the presence of volatilized smelter-derived or coal-burning derived Zn. ?66Zn of ice accretions at two of the three western sites was higher than ?66Zn of snow. Different ?66Zn values of snow and ice accretions from the same site reflected different pollution sources, which may have been situated at different distances from the receptor site. ?66Zn of the soluble Zn fraction was higher than ?66Zn of the insoluble Zn fraction, possibly also indicating a different origin of these two Zn fractions. Zinc isotope heterogeneity in the atmosphere of remote areas indicates that ?66Zn can be a useful tool in pollution provenance studies.

Petra Voldrichova; Vladislav Chrastny; Adela Sipkova; Juraj Farkas; Martin Novak; Marketa Stepanova; Michael Krachler; Frantisek Veselovsky; Vladimir Blaha; Eva Prechova; Arnost Komarek; Leona Bohdalkova; Jan Curik; Jitka Mikova; Lucie Erbanova; Petra Pacherova

2014-01-01T23:59:59.000Z

357

Coalbed gases and hydrocarbon source rock potential of upper Carboniferous coal-bearing strata in upper Silesian Coal Basin, Poland  

SciTech Connect (OSTI)

The Upper Silesian Coal Basin (USCB) is one of the major Upper Carboniferous coal basins in the world. Its coalbed gas reserves to the depths of 1,000 m are estimated to be about 350 billion cubic meters (about 12.4 TCF). Coalbed gases in the USCB are variable in both molecular and stable isotope composition [{delta}{sup 13}C(CH{sub 4}), {delta}D(CH{sub 4}), {delta}{sup 13}C(C{sub 2}H{sub 6}), {delta}{sup 13}C(C{sub 3}H{sub 8}), {delta}{sup 13}C(CO{sub 2})]. Such variability suggests the effects of both primary reactions operating during the generation of gases and secondary processes such as mixing and migration. Coalbed gases are mostly thermogenic methane in which depth-related isotopic fractionation has resulted from migration but not from mixing with the microbial one. The stable carbon isotope composition indicates that the carbon dioxide, ethane and higher gaseous hydrocarbons were generated during the bituminous coal stage of the coalification process. The main stage of coalbed gas generation occurred during the Variscan orogeny, and generation was completed after the Leonian and Asturian phases of this orogeny. The coals and carbonaceous shales have high gas generation potential but low potential for generation and expulsion of oil compared to the known Type III source rocks elsewhere. In general, the carbonaceous shales have slightly higher potential for oil generation, but probably would not be able to exceed expulsion thresholds necessary to expel economic quantities of oil.

Kotarba, M.J.J. [Univ. of Mining and metallurgy, Cracow (Poland); Clayton, J.L.; Rice, D.D. [Geological Survey, Denver, CO (United States)

1996-12-31T23:59:59.000Z

358

SALINITY MANAGEMENT IN THE UPPER COLORADO RIVER BASIN: MODELING, MONITORING, AND COST-EQUITY CHALLENGES.  

E-Print Network [OSTI]

?? Salinity issues in the Upper Colorado River Basin have been a serious concern to the western United States and northern Mexico. The Colorado River… (more)

Keum, Jongho

2014-01-01T23:59:59.000Z

359

Analytic model of upper tropospheric clouds in the tropical Hadley cell  

Science Journals Connector (OSTI)

We have developed a two-dimensional analytic model that describes the behavior of upper tropospheric clouds in the tropical Hadley cell. The behavior of the model is...

Kyoko K. Tanaka; Tetsuo Yamamoto; Sei-ichiro Watanabe…

2008-03-01T23:59:59.000Z

360

E-Print Network 3.0 - anisotropic upper critical Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

30 A two-dimensional hybrid method for modeling seismic wave propagation in anisotropic media Summary: upper mantle. We calculated the synthetics for a series of laterally...

Note: This page contains sample records for the topic "zinc oxide upper" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

Molecular Fluorescence accompanying the Twilight Injection of Triethylborane into the Upper Atmosphere  

Science Journals Connector (OSTI)

... fluorescence spectrum, and at the same time to obtain data on the upper atmospheric \\vind from the motion of the released material.

J. M. HOFFMAN; M. A. PALMER; L. B. SMITH

1967-09-09T23:59:59.000Z

362

Enhanced Thermal Conductivity Oxide Fuels  

SciTech Connect (OSTI)

the purpose of this project was to investigate the feasibility of increasing the thermal conductivity of oxide fuels by adding small fractions of a high conductivity solid phase.

Alvin Solomon; Shripad Revankar; J. Kevin McCoy

2006-01-17T23:59:59.000Z

363

Anodic oxidation of zircaloy-2  

Science Journals Connector (OSTI)

The anodic polarization of zircaloy-2 in different electrolytic baths has been investigated in order to obtain thick oxide films with properties suitable for wear applications.

A. Conte; A. Borello; A. Cabrini

1976-07-01T23:59:59.000Z

364

Carbon and oxygen isotope halos in the host limestone, El Mochito Zn-Pb-(Ag) skarn massive sulfide-oxide deposit, Honduras  

Science Journals Connector (OSTI)

...sulfide-oxide deposit, Honduras Rodrigo Vazquez Torsten W. Vennemann...deposit, Honduras Vazquez Rodrigo Author University of Michigan...Valanginian Barriasien Todos Santos Fm, Upper Jurassic Middle...Yojoa Nueva Main I 4000 Todos Santos Fm. Faults 6000 8000 10000...

Rodrigo Vazquez; Torsten W. Vennemann; Stephen E. Kesler; Norman Russell

365

Operation of staged membrane oxidation reactor systems  

SciTech Connect (OSTI)

A method of operating a multi-stage ion transport membrane oxidation system. The method comprises providing a multi-stage ion transport membrane oxidation system with at least a first membrane oxidation stage and a second membrane oxidation stage, operating the ion transport membrane oxidation system at operating conditions including a characteristic temperature of the first membrane oxidation stage and a characteristic temperature of the second membrane oxidation stage; and controlling the production capacity and/or the product quality by changing the characteristic temperature of the first membrane oxidation stage and/or changing the characteristic temperature of the second membrane oxidation stage.

Repasky, John Michael

2012-10-16T23:59:59.000Z

366

Catalytic wet oxidation of phenolic wastes  

E-Print Network [OSTI]

Possible catalyst deactivation problems High capital, low operating Supercritical water oxidation (SCWO) Feasible only at high organic concentra- tions High Fast reaction, complete oxidation Severe reaction conditions, canosion problems... of milder reaction conditions and is much less energy intensive. Thus, catalytic wet oxidation would be an alternative to solvent extraction, supercritical water oxidation, homogeneous oxidation, and incineration. It should also be feasible at low...

Thomas, Brook James

1995-01-01T23:59:59.000Z

367

Low Temperature Constrained Sintering of Cerium Gadolinium Oxide Films for Solid Oxide Fuel Cell Applications  

E-Print Network [OSTI]

Temperature Solid Oxide Fuel Cells, In: S.C. Singhal and M.solidoxide.html, Tubular Solid Oxide Fuel Cell Technology,Oxide Films for Solid Oxide Fuel Cell Applications by Jason

Nicholas, Jason.D.

2007-01-01T23:59:59.000Z

368

Upper Division Hot Spring Geothermal Area | Open Energy Information  

Open Energy Info (EERE)

Division Hot Spring Geothermal Area Division Hot Spring Geothermal Area Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Geothermal Resource Area: Upper Division Hot Spring Geothermal Area Contents 1 Area Overview 2 History and Infrastructure 3 Regulatory and Environmental Issues 4 Exploration History 5 Well Field Description 6 Geology of the Area 7 Geofluid Geochemistry 8 NEPA-Related Analyses (0) 9 Exploration Activities (0) 10 References Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"TERRAIN","zoom":6,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"500px","height":"300px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":66.35744679,"lon":-156.7663995,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

369

Thermionic converters for an Integrated Solar Upper Stage (ISUS)  

SciTech Connect (OSTI)

The Integrated Solar Upper Stage (ISUS) is a solar bimodal system which combines thermal propulsion and electric power generation in a single integrated system. A thermionic converter was designed and fabricated for the ISUS system. The ISUS thermionic energy converters differ from previous designs, due to the significant changes in operating temperature prior to and during an eclipse, with the emitter temperature increasing from 1,900 K to 2,200 K, and then back again. A complete thermal and electrical model was developed for a planar diode to determine optimum operating dimensions and parameters. The model includes an overall energy balance for the diode, and changes the interelectrode gap spacing due to thermal expansion of the parts as the emitter and/or collector temperatures change. Cesium pressure can be chosen from an external liquid reservoir, an integral reservoir using cesium intercalated into graphite attached to the collector heat pipe, or optimum cesium pressure. With optimum cesium pressure, the maximum efficiency increases from 14% to 16% as the emitter temperature increases from 1,900 K to 2,200 K. The improvement in efficiency is only 2% as the emitter temperature is increased. Optimum efficiency requires an external, actively controlled liquid reservoir.

Anderson, W.G.; Horner-Richardson, K. [Thermacore, Inc., Lancaster, PA (United States)

1996-12-31T23:59:59.000Z

370

Solar wind energy dissipation in the upper atmosphere  

Science Journals Connector (OSTI)

The dissipation of solar wind energy makes an important contribution to the energy budget of the earth's upper atmosphere. Heating and momentum transfer by this energy source generate a permanent disturbance zone in the polar region which is characterized by an increase in the temperature and pressure, strong vertical and horizontal winds, and significant changes in the density structure. Heavier gases like Ar, O2 and N2 are enhanced, He depleted, and O moderately enhanced or depleted depending on the altitude. The extension and latitudinal structure of this disturbance zone sensitively depend on a number of parameters including the level of magnetic activity, the season, local, universal and storm time, and solar activity. The same parameters also determine the magnitude of the perturbation. Changes outside the disturbance zone are relatively small and are characterized by an increase of all gas constituents. Whereas present models do provide a first order description, more sophisticated algorithms are needed for a satisfactory representation of the disturbance effects.

G.W. Prölss

1983-01-01T23:59:59.000Z

371

Sorption of lithium from a geothermal brine by pelletized mixed aluminum-lithium hydrous oxides  

SciTech Connect (OSTI)

An inorganic ion exchanger was evaluated by the Bureau of Mines for recovering lithium from geothermal brines. The ion exchanger or sorbent was mixed hydrous oxide of aluminum and lithium that had been dried at 100 C. The dried precipitate was pelletized with a sodium silicate binder to improve flow rates in sorption tests. The sorbent was loaded to 2 mg Li/g of pellets and sorption from the solution was independent of the concentrations of Ca, Fe, Mn, and Zn. Manganese and zinc were sorbed by the pellets but did not suppress lithium sorption. Lithium was desorbed with water, but none of the washing solutions investigated removed entrained brine without stripping lithium. The complex nature of the sorption mechanisms is discussed.

Schultze, L.E.; Bauer, D.J.

1985-01-01T23:59:59.000Z

372

Metal oxide films on metal  

DOE Patents [OSTI]

A structure including a thin film of a conductive alkaline earth metal oxide selected from the group consisting of strontium ruthenium trioxide, calcium ruthenium trioxide, barium ruthenium trioxide, lanthanum-strontium cobalt oxide or mixed alkaline earth ruthenium trioxides thereof upon a thin film of a noble metal such as platinum is provided.

Wu, Xin D. (Los Alamos, NM); Tiwari, Prabhat (Los Alamos, NM)

1995-01-01T23:59:59.000Z

373

Ethylene Oxide for Soil Sterilization  

Science Journals Connector (OSTI)

... , this method may be time-consuming, and in view of the physical properties of ethylene oxide (solubility in water and boiling point 12-5 C.) it was considered ... consists of making up an aqueous solution to supply 2 or 4 c.c. of ethylene oxide in a given amount of water, using pre-chilled glassware and water. The ...

R. E. ROSE; R. W. BAILEY

1952-04-26T23:59:59.000Z

374

Ultra Supercritical Steamside Oxidation  

SciTech Connect (OSTI)

Ultra supercritical (USC) power plants offer the promise of higher efficiencies and lower emissions, which are goals of the U.S. Department of Energy's Advanced Power Systems Initiatives. Most current coal power plants in the U.S. operate at a maximum steam temperature of 538 C. However, new supercritical plants worldwide are being brought into service with steam temperatures of up to 620 C. Current Advanced Power Systems goals include coal generation at 60% efficiency, which require steam temperatures of up to 760 C. This research examines the steamside oxidation of advanced alloys for use in USC systems, with emphasis placed on alloys for high- and intermediate-pressure turbine sections. Initial results of this research are presented.

Holcomb, Gordon R.; Cramer, Stephen D.; Covino, Bernard S., Jr.; Bullard, Sophie J.; Ziomek-Moroz, Malgorzata

2005-01-01T23:59:59.000Z

375

What can the Upper Colorado basin expect this winter? Klaus Wolter  

E-Print Network [OSTI]

. Upper Colorado basin appears marginal at best! #12;What are typical impacts in Western U.S.? FebWhat can the Upper Colorado basin expect this winter? Klaus Wolter NOAA-Earth System Research Lab & University of Colorado at Boulder-CIRES · ENSO: current situation, typical impacts, and outlook · What about

376

Cognitive Issues in Upper-Division Electricity & Magnetism Steven J. Pollock  

E-Print Network [OSTI]

interventions ­at the upper division. Keywords: physics education research, course reform, electricityCognitive Issues in Upper-Division Electricity & Magnetism Steven J. Pollock and Stephanie V. Chasteen* * Science Education Initiative, University of Colorado, Boulder, CO 80309, USA Department

Colorado at Boulder, University of

377

Observations on student difficulties with mathematics in upper-division electricity and magnetism  

E-Print Network [OSTI]

Observations on student difficulties with mathematics in upper-division electricity and magnetism Rachel E. Pepper, Stephanie V. Chasteen, Steven J. Pollock, and Katherine K. Perkins Science Education 2011; published 27 March 2012) We discuss common difficulties in upper-division electricity

Colorado at Boulder, University of

378

Crustal and upper mantle structure of southernmost South America inferred from regional waveform inversion  

E-Print Network [OSTI]

Crustal and upper mantle structure of southernmost South America inferred from regional waveform; published 24 January 2003. [1] We determine the crustal and upper mantle structure of southern South America Information Related to Geographic Region: South America; KEYWORDS: niching genetic algorithm, regional

379

Upper Permian vertebrates and their sedimentological context in the South Urals, Russia  

E-Print Network [OSTI]

Upper Permian vertebrates and their sedimentological context in the South Urals, Russia Valentin P,* a Geological Institute of Saratov University, Ulitsa Moskovskaya, 161, Saratov 410075, Russia b Department in the Upper Permian of the Southern Urals area of European Russia. The first sites were found in the 1940s

Benton, Michael

380

Global empirical wind model for the upper mesosphere/lower thermosphere. I. Prevailing wind  

E-Print Network [OSTI]

Global empirical wind model for the upper mesosphere/lower thermosphere. I. Prevailing wind Y. I. An updated empirical climatic zonally aver- aged prevailing wind model for the upper mesosphere/ lower of monthly mean winds from meteor radar and MF radar measurements at more than 40 stations, well distributed

Paris-Sud XI, Université de

Note: This page contains sample records for the topic "zinc oxide upper" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

A modified algorithm for computing the upper-bound reliabilty of computer networks  

Science Journals Connector (OSTI)

This paper presents a modified algorithm to node elimination process for computing the upper-bound reliability of two-terminal networks. The algorithm has two technique; nodes removal and decomposition technique. The first technique is a modified algorithm ... Keywords: Computer networks, Network reliability, Networks decomposition, Nodes removal, The upper bound reliability

Y. B. Mahdy, A. Younes, M. A. Soliman, M. H. Abdellha

2005-01-01T23:59:59.000Z

382

Long-Term Sediment Generation Rates for the Upper Rio Chagres Basin: Implications for Panama  

E-Print Network [OSTI]

Chapter 19 Long-Term Sediment Generation Rates for the Upper Rio Chagres Basin: Implications: We measured in situ-produced cosmogenic 10 Be in 17 sand-sized sediment samples (0.25 to 0.85 mm) to estimate the rate and distribution of sediment generation in the upper Chagres watershed over the last 10

Nichols, Kyle K.

383

HYDROTHERMAL ACTIVITY AND CARBON-DIOXIDE DISCHARGE AT SHRUB AND UPPER KLAWASI MUD VOLCANOES,  

E-Print Network [OSTI]

HYDROTHERMAL ACTIVITY AND CARBON-DIOXIDE DISCHARGE AT SHRUB AND UPPER KLAWASI MUD VOLCANOES and July 1973 at Shrub and Upper Klawasi mud volcanoes 8 ii #12;HYDROTHERMAL ACTIVITY AND CARBON. Map of diffuse carbon dioxide flow from soils near the summit of Shrub mud volcano 9 TABLES 1

384

Variation of the Thermohaline Structure in the Western Equatorial Pacific Upper Ocean  

E-Print Network [OSTI]

Variation of the Thermohaline Structure in the Western Equatorial Pacific Upper Ocean;Abstract Processes which control the upper ocean thermohaline structure in the western equa- torial Pacific forcing data have indicated that the thick isothermal layer in the western equatorial Pacific is found

Luther, Douglas S.

385

Reduced Order Modeling of the Upper Tropical Pacific Ocean Model Using Proper Orthogonal Decomposition  

E-Print Network [OSTI]

Reduced Order Modeling of the Upper Tropical Pacific Ocean Model Using Proper Orthogonal of a large-scale upper ocean circulation in the tropic Pacific domain. We construct different POD models-scale seasonal variability of the tropic Pacific obtained by the original model is well captured by a low

Aluffi, Paolo

386

Nanostructured Solid Oxide Fuel Cell Electrodes  

E-Print Network [OSTI]

post-Doping of Solid Oxide Fuel Cell Cathodes,? P.h.D.and V. I. Birss, in Solid Oxide Fuel Cells (SOFC IX), S. C.Nanostructured Solid Oxide Fuel Cell Electrodes By Tal Zvi

Sholklapper, Tal Zvi

2007-01-01T23:59:59.000Z

387

Detection of oxidation in human serum lipoproteins  

E-Print Network [OSTI]

A method for the oxidation of lipoproteins in vitro was developed using the free radical initiator, 2,2?-azobis-(2-amidinopropane) dihydrochloride (AAPH). Following in vitro oxidation, the susceptibility to oxidation of the serum samples...

Myers, Christine Lee

2006-04-12T23:59:59.000Z

388

River Sediment Analysis by Slurry Sampling FAAS: Determination of Copper, Zinc and Lead Flvia L. Alves, Solange Cadore, Wilson F. Jardim and Marco A. Z. Arruda*  

E-Print Network [OSTI]

Article River Sediment Analysis by Slurry Sampling FAAS: Determination of Copper, Zinc and Lead sediment analysis was developed. Using this procedure, copper, zinc and lead were determined. The influence of the nitric acid concentration on the slurry preparation, as well as the sediment particle size

Jardim, Wilson de Figueiredo

389

Geothermometry At Upper Hot Creek Ranch Area (Benoit & Blackwell, 2006) |  

Open Energy Info (EERE)

Geothermometry At Upper Hot Creek Ranch Area (Benoit & Blackwell, 2006) Geothermometry At Upper Hot Creek Ranch Area (Benoit & Blackwell, 2006) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Geothermometry At Upper Hot Creek Ranch Area (Benoit & Blackwell, 2006) Exploration Activity Details Location Upper Hot Creek Ranch Area Exploration Technique Geothermometry Activity Date Usefulness useful DOE-funding Unknown Notes Ten water samples were collected for chemical analysis and interpretation. Analyses of three samples of the UHCR thermal give predicted subsurface temperatures ranging from 317 to 334 oF from the Na-K-Ca, silica (quartz), and Na-Li geothermometers. The fact that all three thermometers closely agree gives the predictions added credibility. References Dick Benoit, David Blackwell (2006) Exploration Of The Upper Hot

390

EIS-0408: Upper Great Plains Programmatic Wind EIS | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

8: Upper Great Plains Programmatic Wind EIS 8: Upper Great Plains Programmatic Wind EIS EIS-0408: Upper Great Plains Programmatic Wind EIS Summary This EIS, being prepared jointly by DOE's Western Area Power Administration and the Department of the Interior's Fish and Wildlife Service, will evaluate the environmental impacts of wind energy development in Iowa, Minnesota, Montana, Nebraska, North Dakota, and South Dakota - Western's Upper Great Plains customer service region. Western will use the EIS to implement a comprehensive regional program to manage interconnection requests for wind energy projects. Public Comment Opportunities None available at this time. Documents Available for Download March 22, 2013 EIS-0408: Draft Programmatic Environmental Impact Statement Upper Great Plains Programmatic Wind EIS

391

GAISUS-1 thermionic converter for the integrated solar upper stage  

SciTech Connect (OSTI)

The Integrated Solar Upper Stage (ISUS) system is a compact orbital transfer vehicle which generates thrust to boost payloads from LEO to higher orbits. It does this by collecting and concentrating solar flux into a sensible thermal storage, graphite receiver which is used to heat hydrogen propellant to temperatures of up to 2500 K. The ISUS receiver also radiates heat into an array of thermionic converters which produce electrical power. The GAISUS-1 thermionic converter is a first generation planar converter designed to produce electrical power when coupled with the ISUS receiver. GAISUS-1 will deliver over 31 W{sub e} at 1900 K. A wrought Re hotshoe accepts radiant heat from the receiver. The back side of the hotshoe forms the emitting surface of the converter. Special attention was paid to optimize the electrical and thermal losses experienced through the sleeve. Triple and single sleeve geometries were thermally modeled and evaluated, resulting in the selection of a single sleeve design. A high temperature metal/ceramic seal isolates the emitter sleeve from the collector. A Nb collector is used and is an integral part of a Nb/Na heat pipe. The heat pipe transports reject heat from the collector surface to a thermal radiator (condenser) portion of the heat pipe. The converter utilizes an integral graphite Cs reservoir. This type of reservoir automatically produces a rise in Cs pressure in response to a rise in emitter/collector temperatures. This Cs pressure feedback mechanism insures adequate Cs coverage of the emitter over a broad range of operating conditions (temperatures).

Begg, L.L.; Heffernan, T.F.; Horner, M.H. [General Atomics, San Diego, CA (United States)

1997-12-31T23:59:59.000Z

392

Evaluating Radiative Closure in the Middle-to-Upper Troposhere  

SciTech Connect (OSTI)

This project had two general objectives. The first is the characterization and improvement of the radiative transfer parameterization in strongly absorbing water vapor bands, as these strongly absorbing bands dictate the clear sky radiative heating rate. The second is the characterization and improvement of the radiative transfer in cirrus clouds, with emphasis on ensuring that the parameterization of the radiative transfer is consistent and accurate across the spectrum. Both of these objectives are important for understanding the radiative processes in the mid-to-upper troposphere. The research on this project primarily involved analysis of data from the First and Second Radiative Heating in Underexplored Bands Campaigns, RHUBC-I and II. This included a climate model sensitivity study using results from RHUBC-I. The RHUBC experiments are ARM-funded activities that directly address the objectives of this research project. A secondary effort was also conducted that investigated the trends in the long-term (~14 year) dataset collected by the Atmospheric Emitted Radiance Interferometer (AERI) at the ARM Southern Great Plains site. This work, which was primarily done by a post-doc at the University of Wisconsin �������¢���������������� Madison under Dr. Turner�������¢����������������s direction, uses the only NIST-traceable instrument at the ARM site that has a well-documented calibration and uncertainty performance to investigate long-term trends in the downwelling longwave radiance above this site.

Tobin, David C; Turner, David D; Knuteson, Robert O

2013-01-02T23:59:59.000Z

393

Diagenesis of upper Cretaceous Teapot sandstones, Powder River basin, Wyoming  

SciTech Connect (OSTI)

The Upper Cretaceous Teapot sandstones of Well Draw field, Converse County, Wyoming, are turbidite fan deposits bounded stratigraphically by marine shales. They presently occur from 6360 to 7200 ft (1920 to 2195 m), dipping to the northwest. Cored samples selected from nonbioturbated A bedsets show that the sandstones are fine to very fine-grained feldspathic litharenites. Major authigenic minerals include carbonate cement, quartz overgrowths, and clay minerals. The clay minerals originated either as alteration rims on detrital silicates or as precipitated from pore fluids. Alteration rims typically consist of illite, smectite, mixed layer illite/smectite, and lesser chlorite. Feldspars are altered to kaolinite. Precipitated clays occur as thin, unoriented, grain coating chlorite and kaolinite; pore lining mixed layer illite/smectite and lesser chlorite oriented with (001) normal to the pore wall; and unoriented, poorly crystalline, pore filling chlorite. The diagenetic sequence is: compaction and limited quartz overgrowth development; complete calcite cementation and precipitation of grain-coating clays; dissolution of carbonate cement; precipitation of pore lining and later pore filling clays; and development of second stage quartz overgrowths. Development of silicate alteration rims occurred throughout the diagenetic history. Dissolution of carbonate cement produced the majority of present-day porosity; however, this secondary porosity was reduced by precipitation of clays minerals. In the downdip sandstones, hydrodynamic flow and an increase in the abundance of detrital labile grains have caused an increased abundance of clay mineral precipitates, reducing the reservoir potential. The pore fluids which controlled sandstones diagenesis were likely provided by dewatering and diagenesis of enclosing shales.

Conner, S.P.; Tieh, T.T.

1984-04-01T23:59:59.000Z

394

Synthesis of Mixed Copper?Zinc Basic Carbonates and Zn-Doped Tenorite by Homogeneous Alkalinization  

Science Journals Connector (OSTI)

In the range 0.50 ? XZn > 0.30, on the other hand, only aurichalcite forms; the final solid composition is essentially that of the starting solution. ... Mixtures of aurichalcite, zincian?malachites and Zn-doped tenorite, in varying proportions, form at intermediate XZn values. ... 18-21These procedures, in which coprecipitation takes place at very large supersaturations, usually give rise to mixed copper?zinc hydroxycarbonate phases, mainly aurichalcite and zincian?malachites;22-26subsequent thermal decomposition, which leads to what is believed to be a fine CuO?ZnO interdispersion, followed by reduction yields the final catalysts. ...

Galo J. de A. A. Soler-Illia; Roberto J. Candal; Alberto E. Regazzoni; Miguel A. Blesa

1997-01-16T23:59:59.000Z

395

Optical transitions in semiconductor superlattices with zinc-blende structure in the k?p approximation  

Science Journals Connector (OSTI)

Transition-matrix elements for superlattices consisting of materials with the zinc-blende structure are presented in analytical form in the k?p approximation including the ?6, ?7, and ?8 bands. The resulting selection rules for cases where the magnetic field is absent, and where the magnetic field is applied perpendicular to the superlattice layers, are discussed. The results can be used for type-I, -II, and -III superlattices. They can also be used for other systems, such as a single quantum well.

H. Luo and J. K. Furdyna

1990-03-15T23:59:59.000Z

396

A model for the anodic dissolution of zinc in alkaline electrolyte  

SciTech Connect (OSTI)

The authors propose a three-step mechanism to describe the kinetics of the initial dissolution of zinc in alkaline electrolyte. The rate-determining step is postulated to be a reversible reaction where a monovalent zine hydroxide is converted to a soluble zincate. The surface reactions are assumed to occur on activated sites, where Langmuir adsorption is assumed. The reaction scheme is shown to be consistent with experimental quantities such as Tafel slope and reaction order for data obtained near room temperature in approximately 1N hydroxide electrolyte. The thermodynamic consistency of each elementary step is demonstrated from an analysis of available free energy data.

Chang, Y.C.; Prentice, G.

1984-07-01T23:59:59.000Z

397

New manganese catalyst for light alkane oxidation  

DOE Patents [OSTI]

Aluminophosphates containing manganese in the structural framework are employed for the oxidation of alkanes, for example the vapor phase oxidation of methane to methanol.

Durante, Vincent A. (West Chester, PA); Lyons, James E. (Wallingford, PA); Walker, Darrell W. (Visalia, CA); Marcus, Bonita K. (Radnor, PA)

1994-01-01T23:59:59.000Z

398

Narrow spectral linewidth of single zinc-blende GaN/AlN self-assembled quantum dots  

SciTech Connect (OSTI)

We study by microphotoluminescence the optical properties of single self-assembled zinc-blende GaN/AlN quantum dots grown by plasma-assisted molecular beam epitaxy. As opposed to previous reports, the high quality of such zinc-blende GaN quantum dots allows us to evidence a weak acoustic phonon sideband as well as a limited spectral diffusion. As a result, we report on resolution-limited quantum dot linewidths as narrow as 500 ± 50 ?eV. We finally confirm the fast radiative lifetime and high-temperature operation of such quantum dots.

Sergent, S. [Institute for Nano Quantum Information Electronics, The University of Tokyo, 4-6-1 Komaba, Meguro, Tokyo 153-8505 (Japan)] [Institute for Nano Quantum Information Electronics, The University of Tokyo, 4-6-1 Komaba, Meguro, Tokyo 153-8505 (Japan); Kako, S. [Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro, Tokyo 153-8505 (Japan)] [Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro, Tokyo 153-8505 (Japan); Bürger, M.; As, D. J. [Department Physik, Universität Paderborn, Warburger Str. 100, 33098 Paderborn (Germany)] [Department Physik, Universität Paderborn, Warburger Str. 100, 33098 Paderborn (Germany); Arakawa, Y. [Institute for Nano Quantum Information Electronics, The University of Tokyo, 4-6-1 Komaba, Meguro, Tokyo 153-8505 (Japan) [Institute for Nano Quantum Information Electronics, The University of Tokyo, 4-6-1 Komaba, Meguro, Tokyo 153-8505 (Japan); Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro, Tokyo 153-8505 (Japan)

2013-10-07T23:59:59.000Z

399

Primary and Secondary Three Dimensional Microbatteries  

E-Print Network [OSTI]

Batteries A zinc air battery generates electricity by simultaneously oxidizing zinc metal andzinc-air batteries. Restructuring the active zinc metal into

Cirigliano, Nicolas

2013-01-01T23:59:59.000Z

400

Growth and characterisation of epitaxially ordered zinc aluminate domains on c-sapphire  

Science Journals Connector (OSTI)

Epitaxially ordered zinc aluminate domains with sub-micron dimensions are formed on bare c-sapphire substrates using a vapour phase method (with vapour generated by carbothermal reduction of ZnO) at various temperatures and growth durations. A zinc aluminate (ZnAl2O4) layer is formed by reaction of the source materials (Zn and O) with the substrate. We observe crystallites with a well-defined epitaxial relationship on the sapphire substrate in addition to polycrystalline material. The epitaxially oriented deposit displays the form of characteristically twinned (singly or multiply) grains of sub-micron dimensions with three variants, consistent with the c-sapphire substrate symmetry. Scanning electron microscopy and transmission electron microscopy studies show that the formation of these grains is associated with the presence of extended defects in the sapphire substrate. Epitaxially ordered grains formed at higher temperatures show a change in the nature of the twin boundaries and epitaxial relations as a function of growth time, attributed to the effects of annealing during growth.

J. Grabowska; R.T. Rajendra Kumar; E. McGlynn; K.K. Nanda; S.B. Newcomb; P.J. McNally; L. O'Reilly; J.-P. Mosnier; M.O. Henry

2008-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "zinc oxide upper" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

A zinc complex of heparan sulfate destabilises lysozyme and alters its conformation  

SciTech Connect (OSTI)

Highlights: Black-Right-Pointing-Pointer Zinc-heparan sulfate complex destabilises lysozyme, a model amyloid protein. Black-Right-Pointing-Pointer Addition of zinc, without heparan sulfate, stabilises lysozyme. Black-Right-Pointing-Pointer Heparan sulfate cation complexes provide alternative protein folding routes. -- Abstract: The naturally occurring anionic cell surface polysaccharide heparan sulfate is involved in key biological activities and is implicated in amyloid formation. Following addition of Zn-heparan sulfate, hen lysozyme, a model amyloid forming protein, resembled {beta}-rich amyloid by far UV circular dichroism (increased {beta}-sheet: +25%), with a significantly reduced melting temperature (from 68 to 58 Degree-Sign C) by fluorescence shift assay. Secondary structure stability of the Zn-heparan sulfate complex with lysozyme was also distinct from that with heparan sulfate, under stronger denaturation conditions using synchrotron radiation circular dichroism. Changing the cation associated with heparan sulfate is sufficient to alter the conformation and stability of complexes formed between heparan sulfate and lysozyme, substantially reducing the stability of the protein. Complexes of heparan sulfate and cations, such as Zn, which are abundant in the brain, may provide alternative folding routes for proteins.

Hughes, Ashley J. [Institute of Integrative Biology, University of Liverpool, Liverpool L69 7ZB (United Kingdom) [Institute of Integrative Biology, University of Liverpool, Liverpool L69 7ZB (United Kingdom); Diamond Light Source Ltd., Diamond House, Didcot, Oxfordshire OX11 0DE (United Kingdom); Hussain, Rohanah [Diamond Light Source Ltd., Diamond House, Didcot, Oxfordshire OX11 0DE (United Kingdom)] [Diamond Light Source Ltd., Diamond House, Didcot, Oxfordshire OX11 0DE (United Kingdom); Cosentino, Cesare; Guerrini, Marco [Istituto di Chimica e Biochimica 'G. Ronzoni', Via G. Colombo 81, Milano 20133 (Italy)] [Istituto di Chimica e Biochimica 'G. Ronzoni', Via G. Colombo 81, Milano 20133 (Italy); Siligardi, Giuliano [Diamond Light Source Ltd., Diamond House, Didcot, Oxfordshire OX11 0DE (United Kingdom)] [Diamond Light Source Ltd., Diamond House, Didcot, Oxfordshire OX11 0DE (United Kingdom); Yates, Edwin A., E-mail: eayates@liv.ac.uk [Institute of Integrative Biology, University of Liverpool, Liverpool L69 7ZB (United Kingdom); Rudd, Timothy R., E-mail: trudd@liv.ac.uk [Institute of Integrative Biology, University of Liverpool, Liverpool L69 7ZB (United Kingdom); Istituto di Chimica e Biochimica 'G. Ronzoni', Via G. Colombo 81, Milano 20133 (Italy)

2012-09-07T23:59:59.000Z

402

Studies on the development of mossy zinc electrodeposits from flowing alkaline electrolytes  

SciTech Connect (OSTI)

The initiation and characteristics of mossy zinc electrodeposits have been investigated. Batteries with zinc electrodes are candidates for electric vehicle applications; however, this electrode is prone to form non-compact deposits that contribute to capacity loss and battery failure. Moss is deposited when the current density is far from the limiting current. This morphology first appears only after the bulk deposit is approximately 1 {mu}m thick. In this investigation, the effects of flow rate (Re=0--4000), current density (0--50 mA/cm{sup 2}), concentration of the electroactive species (0.25 and 0.5 M), and the concentration of supporting electrolyte (3, 6, and 12 M) on the initiation of moss were examined. The rotating concentric cylinder electrode was employed for most of the experiments; and a flow channel was used to study the development of morphology. After the experiment, the deposit was characterized using microscopic, x-ray diffraction, and profilometric techniques. 94 refs., 72 figs.

Mc Vay, L.

1991-07-01T23:59:59.000Z

403

Structure, adhesion, and stability of metal/oxide and oxide/oxide interfaces  

SciTech Connect (OSTI)

Studies of structural, electronic, and chemical properties of metal/oxide and oxide/oxide interfaces were performed on well-defined interfaces that created by depositing ultra-thin potassium and aluminum films and their oxides onto single crystal TiO[sub 2] and NiO surfaces. Work focused on determining the structure, growth mechanisms, and morphologies of metal and oxide films as they are deposited an single crystal oxide surfaces using RHEED and atomic force microscopy probing electronic structure, bonding and chemical interactions at the interfaces using x-ray and uv photoelectron spectroscopies (XPS, UPS) and Auger electron spectroscopy (AES), and understanding factors affecting stability and reactivity of the interface regions including the role of defects and impurities. Results indicate that kinetic effects have an important influence on interface structure and composition, and they also show that defects in the oxide substrate induce new electronic states at the interface which play a major role in cation-anion bonding and interface interactions. The results establish a link between electronic and chemical bonding properties and the interface structure and morphology, which is required to successfully manipulate the interfacial properties of advanced ceramic materials.

Lad, R.J.

1992-11-01T23:59:59.000Z

404

Single crystal oxide and oxide/oxide eutectic fibres for high temperature composites  

Science Journals Connector (OSTI)

The utilisation of fibre-reinforced metal, intermetallic and ceramic matrix composites (CMCs) in gas turbine engines offers the potential of improved fuel efficiency, higher operating temperature and greater thrust to weight ratio. The development of ceramic fibres with high strength, excellent strength retention at elevated temperatures and good creep resistance is essential to the successful implementation of composites in various high temperature components. Several single crystal oxide and oxide/oxide eutectic fibres have been developed to meet the demanding performance requirements. Recent progress made on developing these fibers will be discussed.

J.-M. Yang

2001-01-01T23:59:59.000Z

405

The catalytic oxidation of propane  

E-Print Network [OSTI]

THE CATALYTIC OXIDATION OP PROPANE A Thesis By Charles Frederick Sandersont * * June 1949 Approval as to style and content recommended: Head of the Department of Chemical Engineering THE CATALYTICi OXIDATTON OF PROPANE A Thesis By Charles... Frederick ;Sandersonit * June 1949 THE CATALYTIC OXIDATION OP PROPANE A Thesis Submitted to the Faculty of the Agricultural and Mechanical College of Texas in Partial Fulfillment of the Requirements for the Degree of Doctor of Philosophy Major...

Sanderson, Charles Frederick

2013-10-04T23:59:59.000Z

406

Molecular cloning and characterization of a gene encoding RING zinc finger ankyrin protein from drought-tolerant Artemisia desertorum  

Science Journals Connector (OSTI)

A RING zinc finger ankyrin protein gene, designated AdZFP1, was isolated from drought-tolerant Artemisia desertorum Spreng by mRNA differential display and RACE. Its cDNA was 1723 bp and encoded a putative protei...

Xiuhong Yang; Chao Sun; Yuanlei Hu; Zhongping Lin

2008-03-01T23:59:59.000Z

407

Lab-on-a-Chip Sensor with Evaporated Bismuth Film Electrode for Anodic Stripping Voltammetry of Zinc  

E-Print Network [OSTI]

Lab-on-a-Chip Sensor with Evaporated Bismuth Film Electrode for Anodic Stripping Voltammetry voltammetry, Zinc, Lab-on-a-chip sensor, Dopamine, Evaporated Bi film electrode DOI: 10.1002/elan.201300349 1 negative potential window. Most importantly, it is much less toxic than mercury and is environmentally

Papautsky, Ian

408

Genomic analysis, cytokine expression, and microRNA profiling reveal biomarkers of human dietary zinc depletion and homeostasis  

Science Journals Connector (OSTI)

...phenol-chloroform extraction, and were treated with Turbo DNA-free reagents (Ambion) to...zinc-responsive genes by PRIMA of the EXPANDER 5.2 software suite (5). PANTHER version...cor-relation metric was conducted with the EXPANDER software. Real-time quantitative...

Moon-Suhn Ryu; Bobbi Langkamp-Henken; Shou-Mei Chang; Meena N. Shankar; Robert J. Cousins

2011-01-01T23:59:59.000Z

409

X-ray absorption spectroscopy of the cubic and hexagonal polytypes of zinc sulfide B. Gilbert,1,  

E-Print Network [OSTI]

X-ray absorption spectroscopy of the cubic and hexagonal polytypes of zinc sulfide B. Gilbert,1 Received 18 June 2002; published 26 December 2002 We investigate the sensitivity of x-ray absorption. Experimental spectra and multiple-scattering calculations are reported at the major absorption edges

Haskel, Daniel

410

Metal contamination of soils and crops affected by the Chenzhou lead/zinc mine spill (Hunan, China)  

E-Print Network [OSTI]

Metal contamination of soils and crops affected by the Chenzhou lead/zinc mine spill (Hunan, China Avenue Edouard Belin, 31400 Toulouse, France b Department of Environmental Science, Hunan Agricultural polluted with As, Cd, Zn, Pb and Cu. The contamination levels were in the order of GYBNSZYNJTC showing

Mailhes, Corinne

411

Ordered zinc-vacancy induced Zn0.75Ox nanophase structure Yong Ding, Rusen Yang, Zhong Lin Wang *  

E-Print Network [OSTI]

Ordered zinc-vacancy induced Zn0.75Ox nanophase structure Yong Ding, Rusen Yang, Zhong Lin Wang induced by Zn-vacancy has been discovered to grow on wurtzite ZnO nanobelts. The superstructure grows parameters of ZnO. The superstructured phase is resulted from high-density Zn vacancies orderly distributed

Wang, Zhong L.

412

Rapid thermal oxidation of silicon in mixtures of oxygen and nitrous oxide  

SciTech Connect (OSTI)

Oxidation in nitrous oxide by conventional hot wall furnace processing and by rapid thermal oxidation (RTO) has been a subject of much interest in recent years. RTO is a fundamentally different process than furnace oxidation, however, and the full effects of this type of processing on the oxidation kinetics are not well understood. Oxidation of silicon by RTO at a variety of pressures, temperatures, and oxidation gas mixtures has been studied. Although at lower temperatures (< 850 C) the atmospheric pressure oxidation rate in nitrous oxide is very close to that in oxygen, at higher temperatures the oxidation rate in nitrous oxide is much lower than that in oxygen. At lower pressures in a RTO process, the oxidation rate in nitrous oxide is higher than that in oxygen. The effect of the nitrogen incorporated in the oxide acting as a diffusion barrier has been proposed as the mechanism of temperature dependence for atmospheric pressure oxidation in nitrous oxide. This does not explain the effects seen at lower pressure,s however, The authors propose that some of the intermediate species produced in the decomposition of nitrous oxide into molecular nitrogen, molecular oxygen, and nitric oxide play a role in the initial stages of oxidation by RTO in nitrous oxide.

Grant, J.M.; Karim, Z. [Sharp Microelectronics Technology, Inc., Camas, WA (United States)

1996-12-01T23:59:59.000Z

413

In situ reduction and oxidation of nickel from solid oxide fuel cells in a Titan ETEM  

E-Print Network [OSTI]

In situ reduction and oxidation of nickel from solid oxide fuel cells in a Titan ETEM A. Faes1. C. Singhal, K. Kendall, High Temperature Solid Oxide Fuel Cell - Fundamentals, Design, Denmark antonin.faes@epfl.ch Keywords: In situ ETEM, nickel oxide, reduction, RedOx, SOFC Solid Oxide Fuel

Dunin-Borkowski, Rafal E.

414

The edited version has been published in 2004 in N. Hopkins & R. Saad (eds), Upper Egypt, Identity and Change, Cairo,  

E-Print Network [OSTI]

The edited version has been published in 2004 in N. Hopkins & R. Saad (eds), Upper Egypt, Identity tendency, at least since the early 20th c., to describe Upper Egypt (hereafter as-Sa'îd) as a specific these questions and were always stressing "How unknown and unfamiliar and neglected Upper Egypt was for the State

Paris-Sud XI, Université de

415

Influence Of Upper Air Conditions On The Patagonia Icefields L. A. Rasmussen, H. Conway, C. F. Raymond  

E-Print Network [OSTI]

Influence Of Upper Air Conditions On The Patagonia Icefields L. A. Rasmussen, H. Conway, C. F, Second Fig ABSTRACT. Upper-air conditions archived in the NCEP-NCAR Reanalysis have been used cannot be determined, so the investigation is limited to examining relative changes in those upper air

Rasmussen, L.A.

416

Upper mantle structure of South America from joint inversion of waveforms and fundamental mode group velocities of Rayleigh waves  

E-Print Network [OSTI]

Upper mantle structure of South America from joint inversion of waveforms and fundamental mode tomographic S wave velocity model for the upper mantle beneath South America is presented. We developed three-dimensional (3-D) upper mantle S velocity model and a Moho depth model for South America, which

van der Lee, Suzan

417

Transparent conducting oxides and production thereof  

SciTech Connect (OSTI)

Transparent conducting oxides and production thereof are disclosed. An exemplary method of producing a transparent conducting oxide (TCO) material may comprise: providing a TCO target doped with either a high-permittivity oxide or a low-permittivity oxide in a process chamber. The method may also comprise depositing a metal oxide on the target in the process chamber to form a thin film having enhanced optical properties without substantially decreasing electrical quality.

Gessert, Timothy A.; Yoshida, Yuki; Coutts, Timothy J.

2014-06-10T23:59:59.000Z

418

Transparent conducting oxides and production thereof  

SciTech Connect (OSTI)

Transparent conducting oxides and production thereof are disclosed. An exemplary method of producing a transparent conducting oxide (TCO) material may comprise: providing a TCO target (110) doped with either a high-permittivity oxide or a low-permittivity oxide in a process chamber (100). The method may also comprise depositing a metal oxide on the target (110) to form a thin film having enhanced optical properties without substantially decreasing electrical quality.

Gessert, Timothy A; Yoshida, Yuki; Coutts, Timothy J

2014-05-27T23:59:59.000Z

419

Exploration Of The Upper Hot Creek Ranch Geothermal Resource, Nye County,  

Open Energy Info (EERE)

Of The Upper Hot Creek Ranch Geothermal Resource, Nye County, Of The Upper Hot Creek Ranch Geothermal Resource, Nye County, Nevada Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Report: Exploration Of The Upper Hot Creek Ranch Geothermal Resource, Nye County, Nevada Details Activities (2) Areas (1) Regions (0) Abstract: The Upper Hot Creek Ranch (UHCR) geothermal system had seen no significant exploration activity prior to initiation of this GRED III project. Geochemical geothermometers calculated from previously available but questionable quality analyses of the UHCR hot spring waters indicated possible subsurface temperatures of +320 oF. A complex Quaternary and Holocene faulting pattern associated with a six mile step over of the Hot Creek Range near the UHCR also indicated that this area was worthy of some

420

Microsoft Word - Upper Jocko River Final Draft CX 7-15-2013.docx  

Broader source: Energy.gov (indexed) [DOE]

Upper Jocko River Property funding Upper Jocko River Property funding Fish and Wildlife Project No. and Contract No.: 2002-003-00, BPA-007168 Categorical Exclusion Applied (from Subpart D, 10 C.F.R. Part 1021): B1.25 Real property transfers for cultural resources protection, habitat preservation, and wildlife management Location: Township 16 North, Range 19 West, Section 10, Lake County, MT Proposed by: Bonneville Power Administration (BPA) Description of the Proposed Action: BPA proposes to fund the Salish and Kootenai Tribes for the purchase of 5 acres of property, referred to as the Upper Jocko River Land Acqusition in Lake County, MT. The Salish and Kootenai Tribes will own and manage the Upper Jocko River property for fish and wildlife conservation purposes and BPA will receive a conservation

Note: This page contains sample records for the topic "zinc oxide upper" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

Schlumberger soundings in the Upper Raft River and Raft River Valleys,  

Open Energy Info (EERE)

soundings in the Upper Raft River and Raft River Valleys, soundings in the Upper Raft River and Raft River Valleys, Idaho and Utah Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Report: Schlumberger soundings in the Upper Raft River and Raft River Valleys, Idaho and Utah Details Activities (1) Areas (1) Regions (0) Abstract: In 1975, the U.S. Geological Survey made seventy Schlumberger resistivity soundings in the Upper Raft River Valley and in parts of the Raft River Valley. These soundings complement the seventy-nine soundings made previously in the Raft River Valley (Zohdy and others, 1975) and bring the total number of soundings to 149. This work was done as part of a hydrogeologic study of the area. The location, number, and azimuth of all 149 Schlumberger sounding stations are presented. The location of the new

422

E-Print Network 3.0 - ares-i upper stage Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

2008 Summary: stage engine would be added to Ares I-Y. For the Upper Stage (US), the production line at MSFC would... engines), eliminating Ares I-Y flight test, accelerating...

423

Upper Missouri G&T El Coop Inc | Open Energy Information  

Open Energy Info (EERE)

El Coop Inc Jump to: navigation, search Name: Upper Missouri G&T El Coop Inc Place: Montana References: EIA Form EIA-861 Final Data File for 2010 - File1a1 EIA Form 861 Data...

424

A palaeomagnetic study of the Upper Mesozoic succession in Northern Tunisia  

Science Journals Connector (OSTI)

......Carolina 29208, USA Geologisches Institut, Karlsruhe, FRG Marathon Oil Company, Casper, Wyoming, USA The Upper Mesozoic section...GeologischesInstitut, Karlsruhe, FRG M. E. Smithwick Marathon ail Conzpany, Casper, Wyoming, USA Received 1980April......

A. E. M. Nairn; T. J. Schmitt; M. E. Smithwick

1981-04-01T23:59:59.000Z

425

Upper bounds of the rates of decay for solutions of the Boussinesq equations  

Science Journals Connector (OSTI)

In this paper, upper bounds of the L 2-decay rate for the Boussinesq equations are considered. Using the L 2...decay rate of solutions for the heat equation, and assuming that the ...

Ying Liu

2011-01-01T23:59:59.000Z

426

Sedimentology of Upper Cretaceous Cody-Parkman Delta, Southwestern Powder River Basin, Wyoming  

Science Journals Connector (OSTI)

...1959). Some pillows moved downslope to pile up like box cars behind a stalled locomotive so that an occasional pillow slid...south-central New York (Sorauf, 1965), Upper Cretaceous Panther Sandstone of central Utah (Howard and Lohrengel, 1969...

427

Geochemical and rheological constraints on the dynamics of the oceanic upper mantle  

E-Print Network [OSTI]

I provide constraints on mantle convection through observations of the rheology and composition of the oceanic upper mantle. Convection cannot be directly observed, yet is a fundamental part of the plate tectonic cycle. ...

Warren, Jessica Mendelsohn

2007-01-01T23:59:59.000Z

428

Attribution and Characteristics of Wet and Dry Seasons in the Upper Colorado River Basin  

Science Journals Connector (OSTI)

Previous research has shown that the temperature and precipitation variability in the Upper Colorado River Basin (UCRB) is correlated with large-scale climate variability (i.e., El Niño - Southern Oscillation [ENSO] and Pacific Decadal Oscillation ...

Rebecca A. Bolinger; Christian D. Kummerow; Nolan J. Doesken

429

Pressure solution and microfracturing in primary oil migration, upper cretaceous Austin Chalk, Texas Gulf Coast  

E-Print Network [OSTI]

The Upper Cretaceous Austin Chalk is a well known source rock and fractured reservoir. Production is mainly from fractures, and the mechanism by which oil migrates from the matrix into the fractures is not well understood. Microfracturing due...

Chanchani, Jitesh

2012-06-07T23:59:59.000Z

430

Origin of gaseous hydrocarbons from Upper Cretaceous and Tertiary strata in the Piceance basin, western Colorado  

E-Print Network [OSTI]

Natural gas samples were collected for geochemical analyses from Upper Cretaceous and Tertiary strata of the Piceance basin in western Colorado to: 1) determine the origin of gases (i.e., microbial versus thermogenic), 2) determine the thermogenic...

Katz, David Jonathan

2012-06-07T23:59:59.000Z

431

Development of North Atlantic Tropical Disturbances Near Upper-Level Potential Vorticity Streamers  

Science Journals Connector (OSTI)

Tropical cyclone (TC) development near upper-level potential vorticity (PV) streamers in the North Atlantic is studied from synoptic climatology, composite, and case study perspectives. Midlatitude anticyclonic wave breaking is instrumental in ...

Thomas J. Galarneau; Jr.; Ron McTaggart-Cowan; Lance F. Bosart; Christopher A. Davis

432

Sr isotope chemostratigraphy of Upper Jurassic carbonate rocks in the Demerdzhi Plateau (Crimean Mountains)  

Science Journals Connector (OSTI)

The first Sr chemostratigraphic data are obtained for the Upper Jurassic carbonate sections in the Demerdzhi Plateau of the Crimean Mountains. The oncoid, microbial, and organogenic-detrital limestone varietie...

S. V. Rud’ko; A. B. Kuznetsov; V. K. Piskunov

2014-09-01T23:59:59.000Z

433

Processes Coupling the Upper and Deep Ocean on the Continental Slope D. Randolph Watts  

E-Print Network [OSTI]

Processes Coupling the Upper and Deep Ocean on the Continental Slope D. Randolph Watts Graduate-pronged approach has required a combination of expertise from R. Watts, G. Sutyrin, and I. Ginis (who have

Rhode Island, University of

434

Processes Coupling the Upper and Deep Ocean on the Continental Slope D. Randolph Watts  

E-Print Network [OSTI]

Processes Coupling the Upper and Deep Ocean on the Continental Slope D. Randolph Watts Graduate of expertise from R. Watts, G. Sutyrin, and I. Ginis (who have a coordinated ONR-supported study at URI

Rhode Island, University of

435

The skull of Postosuchus kirkpatricki (Archosauria: Paracrocodyliformes) from the Upper Triassic of the United States  

E-Print Network [OSTI]

9000) were obscured by plaster, wire mesh, and paint duringskull were covered by the plaster and paint used in theHoltz 1994). When plaster was removed from the upper

Weinbaum, Jonathan C.

2011-01-01T23:59:59.000Z

436

An early history of pure shear in the upper plate of the raft...  

Open Energy Info (EERE)

early history of pure shear in the upper plate of the raft river metamorphic core complex- black pine mountains, southern Idaho Jump to: navigation, search OpenEI Reference...

437

Surface currents and equatorial thermocline in a coupled upper ocean-atmosphere GCM  

Science Journals Connector (OSTI)

The Oregon State University coupled upper ocean-atmosphere GCM is evaluated in terms of the simulated winds, ocean currents and thermocline depth variations. Although the zonal ... a factor of about three and the...

Kenneth R Sperber; Sultan Hameed; W Gates Lawrence

1992-04-01T23:59:59.000Z

438

Tree Species Composition and Beta Diversity in the Upper Río Chagres Basin, Panama  

Science Journals Connector (OSTI)

Tree species composition at two sites in the upper Río Chagres basin of central Panama was evaluated using rapid inventory methods. At ... inventories were compared to 81 others within the Panama Canal Watershed,...

Rolando Pérez; Salomón Aguilar; Agustín Somoza; Richard Condit…

2005-01-01T23:59:59.000Z

439

Development of an upper extremity motor function rehabilitation system and an assessment system  

Science Journals Connector (OSTI)

This paper presents a novel upper extremity motor function rehabilitation system and an assessment system. The rehabilitation system is an active rehabilitation that can be manipulated by patients through a haptic device and an inertia sensor to perform a tracking task in virtual environment with coordination training of bilateral upper extremity. The design of system aims to augment patients' force exerted by their upper extremity and the ability of force control, namely, dexterity. The structure of rehabilitation system is compact and the inertia of the haptic device's stylus is very small (only 45 g), which makes the system suitable for home-rehabilitation. Simultaneously, in order to assess the effect of rehabilitation, an assessment system has been developed using a 6-axis force sensor. The proposed rehabilitation system is testified experimentally for the upper limbs' rehabilitation training.

Zhibin Song; Shuxiang Guo; Yili Fu

2011-01-01T23:59:59.000Z

440

An Approach to the Detection of Long-Term Trends in Upper Stratospheric Ozone from Space  

Science Journals Connector (OSTI)

A central problem in the detection of long-term trends in upper stratospheric ozone from orbiting remote sensors involves the separation of instrument drifts from true geophysical changes. Periodic flights of a Solar Backscatter Ultraviolet ...

John E. Frederick; Xufeng Niu; Ernest Hilsenrath

1990-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "zinc oxide upper" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

Upper-Ocean Processes under the Stratus Cloud Deck in the Southeast Pacific Ocean  

Science Journals Connector (OSTI)

The annual mean heat budget of the upper ocean beneath the stratocumulus/stratus cloud deck in the southeast Pacific is estimated using Simple Ocean Data Assimilation (SODA) and an eddy-resolving Hybrid Coordinate Ocean Model (HYCOM). Both are ...

Yangxing Zheng; George N. Kiladis; Toshiaki Shinoda; E. Joseph Metzger; Harley E. Hurlburt; Jialin Lin; Benjamin S. Giese

2010-01-01T23:59:59.000Z

442

Effects of horizontal mixing on the upper ocean temperature in the equatorial Pacific Ocean  

Science Journals Connector (OSTI)

The influence of horizontal mixing on the thermal structure of the equatorial Pacific Ocean is examined based on a sigma coordinate ... on the upper thermal structure in the equatorial Pacific Ocean, while their ...

Chuanjiang Huang; Fangli Qiao

2012-01-01T23:59:59.000Z

443

Evolution of upper mantle beneath East Asia and the Tibetan Plateau from P-wave tomography  

E-Print Network [OSTI]

The main objective of the research presented in this thesis is to improve our understanding for the evolution of the upper mantle beneath East Asia and the Tibetan Plateau through high resolution P-wave tomography. The ...

Li, Chang, Ph.D.

2007-01-01T23:59:59.000Z

444

Local foehn effects in the upper Isar Valley, part 1: Observations  

Science Journals Connector (OSTI)

An unusually strong nocturnal downvalley wind can be regularly observed in the upper ... located over Central Europe or when ambient southerly winds are present. Due to the structure of the local topography, this...

Matthias Hornsteiner

2005-04-01T23:59:59.000Z

445

Local foehn effects in the upper Isar Valley, Part 2: numerical simulations  

Science Journals Connector (OSTI)

The local wind system in the upper Isar Valley (Bavarian ... near Mittenwald has the peculiarity that regularly strong foehn-like nocturnal flows occur, mainly during clear ... its properties are similar to the c...

M. Hornsteiner; G. Zängl

2006-01-01T23:59:59.000Z

446

Carbon dioxide and methane emissions from interfluvial wetlands in the upper Negro River basin, Brazil  

Science Journals Connector (OSTI)

Extensive interfluvial wetlands occur in the upper Negro River basin (Brazil) and contain a mosaic of vegetation dominated by emergent grasses and sedges with patches of shrubs and palms. To characterize the rele...

Lauren Belger; Bruce R. Forsberg; John M. Melack

2011-09-01T23:59:59.000Z

447

A Groundwater Dynamic Simulation Model: Application to the Upper San Pedro Basin  

E-Print Network [OSTI]

A Groundwater Dynamic Simulation Model: Application to the Upper San Pedro Basin Report Prepared by using tools such as tracers to determine groundwater travel times and this dynamic simulation modeling

Fay, Noah

448

Density Perturbations in the Upper Atmosphere Caused by the Dissipation of Solar Wind Energy  

Science Journals Connector (OSTI)

The upper atmosphere constitutes the outer region of the terrestrial gas envelope above about 100 km altitude. The energy budget of this outer gas layer is partly controlled by the dissipation of solar wind energy

Gerd W. Prölss

2011-03-01T23:59:59.000Z

449

Low-Cost Label-Free Electrical Detection of Artificial DNA Nanostructures Using Solution-Processed Oxide Thin-Film Transistors  

Science Journals Connector (OSTI)

As stabilizers, monoethanolamine (MEA) and acetic acid (CH3COOH) were dropped to ameliorate the solubility of the precursors and make a homogeneous IGZO solution, respectively. ... Prepared DNA-covered mica sheet was attached onto the metal puck using instant glue and 5 ?L of DX solution, 30 ?L of 1 × TAE/Mg2+ buffer was dropped onto the mica and 10 ?L of 1 × TAE/Mg2+ buffer was mounted onto the AFM tip (A NP-S oxide-sharpened silicon nitride tip). ... The original influence of water on the back-channel of sol-gel derived amorphous indium-gallium-zinc-oxide thin film transistors was studied in various relative humidity environments. ...

Si Joon Kim; Joohye Jung; Keun Woo Lee; Doo Hyun Yoon; Tae Soo Jung; Sreekantha Reddy Dugasani; Sung Ha Park; Hyun Jae Kim

2013-09-27T23:59:59.000Z

450

Development of Zinc/Bromine Batteries for Load-Leveling Applications: Phase 1 Final Report  

SciTech Connect (OSTI)

The Zinc/Bromine Load-Leveling Battery Development contract (No. 40-8965) was partitioned at the outset into two phases of equal length. Phase 1 started in September 1990 and continued through December 1991. In Phase 1, zinc/bromine battery technology was to be advanced to the point that it would be clear that the technology was viable and would be an appropriate choice for electric utilities wishing to establish stationary energy-storage facilities. Criteria were established that addressed most of the concerns that had been observed in the previous development efforts. The performances of 8-cell and 100-cell laboratory batteries demonstrated that the criteria were met or exceeded. In Phase 2, 100-kWh batteries will be built and demonstrated, and a conceptual design for a load-leveling plant will be presented. At the same time, work will continue to identify improved assembly techniques and operating conditions. This report details the results of the efforts carried out in Phase 1. The highlights are: (1) Four 1-kWh stacks achieved over 100 cycles, One l-kWh stack achieved over 200 cycles, One 1-kWh stack achieved over 300 cycles; (2) Less than 10% degradation in performance occurred in the four stacks that achieved over 100 cycles; (3) The battery used for the zinc loading investigation exhibited virtually no loss in performance for loadings up to 130 mAh/cm{sup 2}; (4) Charge-current densities of 50 ma/cm{sup 2} have been achieved in minicells; (5) Fourteen consecutive no-strip cycles have been conducted on the stack with 300+ cycles; (6) A mass and energy balance spreadsheet that describes battery operation was completed; (7) Materials research has continued to provide improvements in the electrode, activation layer, and separator; and (8) A battery made of two 50-cell stacks (15 kWh) was produced and delivered to Sandia National Laboratories (SNL) for testing. The most critical development was the ability to assemble a battery stack that remained leak free. The task of sealing the battery stack using vibration welding has undergone significant improvement resulting in a viable production process. Through several design iterations, a solid technology base for larger battery stack designs was established. Internal stack stresses can now be modeled, in addition to fluid velocity and fluid pressure distribution, through the use of a finite element analysis computer program. Additionally, the Johnson Controls Battery Group, Inc. (JCBGI) proprietary FORTRAN model has been improved significantly, enabling accurate performance predictions. This modeling was used to improve the integrity and performance of the battery stacks, and should be instrumental in reducing the turnaround time from concept to assembly.

Eidler, Phillip

1999-07-01T23:59:59.000Z

451

Depositional environment and reservoir morphology of the Upper Wilcox sandstones, Katy gas field, Waller County, Texas  

E-Print Network [OSTI]

" Wilcox oil and gas fields Page Structure map on the top of the Wilcox Group, Katy gas field, Wailer County, Texas. Contour interval is 100 feet. Nap shows location of wells in the field which penetrate the'IJpper Wilcox" section. Cores are from... Sedimentary structures of the Upper Wilcox sandstones in Humble W-35, Katy gas field, Mailer County, Texas 18 Shale character, deformational features, and sedimentary structures of the Upper Wilcox sand- stones in Humble W-35, Katy gas field, Mailer...

DePaul, Gilbert John

2012-06-07T23:59:59.000Z

452

Prediction of reservoir properties using diagenetic analysis of a template unit: example from Upper Cretaceous sandstones in Powder River basin, Wyoming  

SciTech Connect (OSTI)

Depositional and postdepositional histories of the Parkman formation in the Powder River basin, Wyoming, were studied in detail and compared with other Upper Cretaceous lenticular sandstone units of the Teapot, Sussex, and Shannon sandstones. Petrographic analysis was done using light, cathodoluminescent, scanning, scanning transmission, and backscattered microscopic techniques. X-ray microanalysis was done using energy and wavelength-dispersive spectroscopy systems. The primary diagenetic events observed in these Upper Cretaceous sandstones include ductile-grain deformation and original porosity reduction; formation of authigenic chlorite, kaolinite, illite, and smectite; quartz overgrowths; formation of authigenic feldspar; alteration of feldspar; carbonate cementation; and pyrite and iron oxide precipitation. The major effects upon reservoir properties include: porosity and permeability reduction due to formation of authigenic clays, quartz, and carbonate cement; and early formation of chlorite coatings preventing complete destruction of porosity by quartz overgrowths. Diagenetic alternations appear to be strongly influenced by depositional facies and chemistries of original interstitial waters. However, sources for authigenic silica and clays were predominantly exogenic, although some authigenic minerals had endogenic sources such as feldspar alteration to clay minerals. Authigenic minerals that have exogenic sources appear to have precipitated from fluids generated during diagenesis of the surrounding mud rocks. For this reason, major diagenetic trends in these lenticular sandstones are similar. A diagenetic model developed from the results of analysis of the Parkman formation was successfully used to predict reservoir properties in the Teapot, Sussex, and Shannon sandstones.

Dogan, A.U.; Brenner, R.L.

1987-05-01T23:59:59.000Z

453

Solid oxide electrochemical reactor science.  

SciTech Connect (OSTI)

Solid-oxide electrochemical cells are an exciting new technology. Development of solid-oxide cells (SOCs) has advanced considerable in recent years and continues to progress rapidly. This thesis studies several aspects of SOCs and contributes useful information to their continued development. This LDRD involved a collaboration between Sandia and the Colorado School of Mines (CSM) ins solid-oxide electrochemical reactors targeted at solid oxide electrolyzer cells (SOEC), which are the reverse of solid-oxide fuel cells (SOFC). SOECs complement Sandia's efforts in thermochemical production of alternative fuels. An SOEC technology would co-electrolyze carbon dioxide (CO{sub 2}) with steam at temperatures around 800 C to form synthesis gas (H{sub 2} and CO), which forms the building blocks for a petrochemical substitutes that can be used to power vehicles or in distributed energy platforms. The effort described here concentrates on research concerning catalytic chemistry, charge-transfer chemistry, and optimal cell-architecture. technical scope included computational modeling, materials development, and experimental evaluation. The project engaged the Colorado Fuel Cell Center at CSM through the support of a graduate student (Connor Moyer) at CSM and his advisors (Profs. Robert Kee and Neal Sullivan) in collaboration with Sandia.

Sullivan, Neal P. (Colorado School of Mines, Golden, CO); Stechel, Ellen Beth; Moyer, Connor J. (Colorado School of Mines, Golden, CO); Ambrosini, Andrea; Key, Robert J. (Colorado School of Mines, Golden, CO)

2010-09-01T23:59:59.000Z

454

Internal Electric Field Behavior of Cadmium Zinc Telluride Radiation Detectors Under High Carrier Injection  

SciTech Connect (OSTI)

The behavior of the internal electric-field of nuclear-radiation detectors substantially affects the detector's performance. We investigated the distribution of the internal field in cadmium zinc telluride (CZT) detectors under high carrier injection. We noted the build-up of a space charge region near the cathode that produces a built-in field opposing the applied field. Its presence entails the collapse of the electric field in the rest of detector, other than the portion near the cathode. Such a space-charge region originates from serious hole-trapping in CZT. The device's operating temperature greatly affects the width of the space-charge region. With increasing temperature from 5 C to 35 C, its width expanded from about 1/6 to 1/2 of the total depth of the detector.

Yang, G.; Bolotnikov, A.E.; Camarda, G.S.; Cui, Y.; Hossain, A.; Kim, K.H.; Gul, R.; and James, R.B.

2010-10-26T23:59:59.000Z

455

Speciation of Selenium, Arsenic, and Zinc in Class C Fly Ash  

SciTech Connect (OSTI)

A major environmental concern associated with coal fly ash is the mobilization of trace elements that may contaminate water. To better evaluate proper use of fly ash, determine appropriate disposal methods, and monitor postdisposal conditions, it is important to understand the speciation of trace elements in fly ash and their possible environmental impact. The speciation of selenium, arsenic, and zinc was determined in five representative Class C fly ash samples from combustion of sub-bituminous Powder River Basin coal using synchrotron-based X-ray absorption spectroscopy to provide an improved understanding of the mechanisms of trace element association with the fly ash. Selenium in all fly ash samples occurs predominantly as Se(IV), with the exception of one sample, in which there was a minor amount of Se(0). Se(0) is likely associated with the high content of unburned coal in the sample. Arsenic exists in the fly ash as a single phase most consistent with calcium pyroarsenate. In contrast, zinc occurs as two distinct species in the silicate glass matrix of the fly ash. This work demonstrates that residual carbon in fly ash may reduce potential Se mobility in the environment by retaining it as less soluble elemental Se instead of Se(IV). Further, this work suggests that As and Zn in Class C fly ash will display substantially different release and mobilization behaviors in aquatic environments. While As release will primarily depend upon the dissolution and hydrolysis of calcium pyroarsenate, Zn release will be controlled by the dissolution of alkaline aluminosilicate glass in the ash.

Luo, Yun; Giammar, Daniel E.; Huhmann, Brittany L.; Catalano, Jeffrey G. (WU)

2011-11-17T23:59:59.000Z

456

The Pro-Antioxidant Role of Zinc Supplementation in Cadmium-Treated Choroid Plexus  

E-Print Network [OSTI]

Cadmium (Cd) is a toxic heavy metal with no known physiological function in higher order animals. Previous studies in primary cultures of neonatal rat choroid plexus (CP) epithelial cells indicated Cd induced oxidative stress and stimulated apical...

Francis Stuart, Samantha D.

2014-05-06T23:59:59.000Z

457

Oxidants, Antioxidants and Cell Signaling  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Oxidants, Antioxidants and Cell Signaling Oxidants, Antioxidants and Cell Signaling Speaker(s): Chandan K. Sen Date: February 17, 1998 - 12:00pm Location: 90-3148 Seminar Host/Point of Contact: Richard Sextro Reactive oxygen species represent a common mediator of environmental stress such as during physical exercise, ozone exposure, UV radiation and xenobiotic (pollutant) metabolism. Antioxidant defense systems protect against the ravages of such reactive species. In contrast to the conventional idea that reactive oxygen is mostly a trigger for oxidative damage of biological structures, now we know that low physiologically relevant concentration of reactive oxygen species can regulate a variety of key molecular mechanisms that may be linked with important processes such as immune response, cell-cell adhesion, cell proliferation, inflammation,

458

Graphite Oxidation Thermodynamics/Reactions  

SciTech Connect (OSTI)

The vulnerability of graphite-matrix spent nuclear fuel to oxidation by the ambient atmosphere if the fuel canister is breached was evaluated. Thermochemical and kinetic data over the anticipated range of storage temperatures (200 to 400 C) were used to calculate the times required for a total carbon mass loss of 1 mgcm-2 from a fuel specimen. At 200 C, the time required to produce even this small loss is large, 900,000 yr. However, at 400 C the time required is only 1.9 yr. The rate of oxidation at 200 C is negligible, and the rate even at 400 C is so small as to be of no practical consequence. Therefore, oxidation of the spent nuclear fuel upon a loss of canister integrity is not anticipated to be a concern based upon the results of this study.

Propp, W.A.

1998-09-01T23:59:59.000Z

459

Aromatic-radical oxidation chemistry  

SciTech Connect (OSTI)

The research effort has focussed on discovering an explanation for the anomalously high CO{sub 2} concentrations observed early in the reaction sequence of the oxidation of cyclopentadiene. To explain this observation, a number of plausible mechanisms have been developed which now await experimental verification. One experimental technique for verifying mechanisms is to probe the reacting system by perturbing the radical concentrations. Two forms of chemical perturbation of the oxidation of cyclopentadiene were begun during this past year--the addition of NO{sub 2} and CO to the reacting mixture.

Glassman, I.; Brezinsky, K. [Princeton Univ., NJ (United States)

1993-12-01T23:59:59.000Z

460

Solid oxide fuel cell generator  

DOE Patents [OSTI]

A solid oxide fuel cell generator has a pair of spaced apart tubesheets in a housing. At least two intermediate barrier walls are between the tubesheets and define a generator chamber between two intermediate buffer chambers. An array of fuel cells have tubes with open ends engaging the tubesheets. Tubular, axially elongated electrochemical cells are supported on the tubes in the generator chamber. Fuel gas and oxidant gas are preheated in the intermediate chambers by the gases flowing on the other side of the tubes. Gas leakage around the tubes through the tubesheets is permitted. The buffer chambers reentrain the leaked fuel gas for reintroduction to the generator chamber.

Draper, Robert (Churchill Boro, PA); George, Raymond A. (Pittsburgh, PA); Shockling, Larry A. (Plum Borough, PA)

1993-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "zinc oxide upper" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

Sequence analysis of a zinc-finger gene for the examination of paternal lineages and introgressive hybridization in North American deer  

E-Print Network [OSTI]

By direct sequence analysis of the mammalian zinc-finger Y (Zfy) gene, interspecific and intraspecific variations were documented in a Y-chromosomal locus in North American deer. The evolutionary history of paternal lineages was distinctly different...

Cathey, James Cleveland

2012-06-07T23:59:59.000Z

462

Assessment of water resources in lead-zinc mined areas in Cherokee County, Kansas, and adjacent areas  

SciTech Connect (OSTI)

A study was conducted to evaluate water resources problems related to abandoned lead and zinc mines in Cherokee County, Kansas, and adjacent areas in Missouri and Oklahoma. Past mining activities have caused changes in the geohydrology of the area. Discharge of mine-contaminated groundwater to Tar Creek occurs in Oklahoma from drill holes and shafts where the potentiometric surface of the shallow aquifer is above the land surface. Pumping of the deep aquifer has resulted in a potential for downward movement of water from the shallow aquifer. Water from mines in the eastern area contained dissolved solids concentrations of < 500 mg/L a median pH of 3.9, sulfate concentrations that ranged between 98 and 290 mg/L, and median concentrations for zinc of 37,600 micrograms/L (ug/L) for lead of 240 ug/L, for cadmium of 180 ug/L, for iron of 70 ug/L, for manganese of 240 ug/L, and for silica of 15 mg/L. Water from mines in the western area contained dissolved solids concentrations of generally > 500 mg/L, a median pH of 6.8, sulfate concentrations that ranged between 170 and 2,150 mg/L, and median concentrations for zinc of 3,200 ug/L for lead of 0 ug/L. No conclusive evidence of lateral migration of water from the mines into domestic well water supplies in the shallow aquifer was found in the study area in Kansas. Effects of abandoned lead and zinc mines on tributaries of the Spring River in the eastern area are most severe in Short Creek. Drainage from tailings cause large concentrations of sulfate, zinc, and cadmium in Tar Creek in Kansas. Compared with four other major streams in the western area in Kansas, Tar Creek contained the largest low flow concentrations of sulfate (910 mg/L), zinc (5,800 ug/L), and cadmium (40 ug/L). 45 refs., 23 figs., 26 tabs.

Spruill, T.B.

1987-01-01T23:59:59.000Z

463

Ultrafast Infrared Heating Laser Pulse-Induced Micellization Kinetics of Poly(ethylene oxide)-Poly(propylene oxide)-Poly(ethylene oxide) in  

E-Print Network [OSTI]

Ultrafast Infrared Heating Laser Pulse-Induced Micellization Kinetics of Poly(ethylene oxide)-Poly(propylene oxide)-Poly(ethylene oxide) in Water Xiaodong Ye, Yijie Lu, Shilin Liu,*, Guangzhao Zhang, and Chi Wu-induced micellization of poly(ethylene oxide)-b-poly(propylene oxide)-b-poly(ethylene oxide) (Pluronic PE10300) triblock

Liu, Shilin

464

Influence of Ionic Surfactants on the Aggregation of Poly(Ethylene Oxide)-Poly(Propylene Oxide)-Poly(Ethylene Oxide) Block Copolymers Studied by Differential Scanning and  

E-Print Network [OSTI]

Influence of Ionic Surfactants on the Aggregation of Poly(Ethylene Oxide)-Poly(Propylene Oxide)-Poly(Ethylene copolymers of poly(ethylene oxide) and poly(propylene oxide), EOnPOmEOn, and the ionic surfactants sodium the aggregates of all three polymers. Introduction Water-soluble poly(ethylene oxide)-poly(propylene oxide)- poly(ethylene

Loh, Watson

465

Using CrAIN Multilayer Coatings to Improve Oxidation Resistance...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Coatings to Improve Oxidation Resistance of Steel Interconnects for Solid Oxide Fuel Cell Stacks. Using CrAIN Multilayer Coatings to Improve Oxidation Resistance of Steel...

466

Computational Modeling of Graphene Oxide Exfoliation and Lithium Storage Characteristics.  

E-Print Network [OSTI]

??Graphene oxide is a two dimensional material obtained by adsorption of oxygen or oxygen-containing groups on graphene. Stacked layers of graphene oxide constitute graphite oxide.… (more)

Mortezaee, Reza

2013-01-01T23:59:59.000Z

467

Solid oxide steam electrolysis for high temperature hydrogen production .  

E-Print Network [OSTI]

??This study has focused on solid oxide electrolyser cells for high temperature steam electrolysis. Solid oxide electrolysis is the reverse operation of solid oxide fuel… (more)

Eccleston, Kelcey L.

2007-01-01T23:59:59.000Z

468

Structure, adhesion, and stability of metal/oxide and oxide/oxide interfaces  

SciTech Connect (OSTI)

During the past six months, we have begun our studies of the fundamental properties of metal/oxide and oxide/oxide heterogeneous interfaces which are being prepared by epitaxial growth of ultra-thin-films on single crystal TiO{sub 2} and NiO surfaces. A new ultra-high vacuum film growth chamber was assembled and coupled to an existing surface analysis chamber; a sample transfer system, metal deposition sources, and a RHEED systems with microchannel plate detection were constructed and implemented. Atomic Force Microscopy was used to characterize and refine the preparation procedures for the single crystal surfaces. The electronic structure of stoichiometric, oxygen-deficient, and potassium-covered TiO{sub 2} (110) surfaces was investigated. Preliminary results on the Al/TiO{sub 2} (110) system have been obtained. Two graduate students have begun thesis research on the project. 6 figs.

Lad, R.J.

1991-01-01T23:59:59.000Z

469

The distribution of copper, manganese, zinc, and iron in antarctic waters and the relation of the concentrations of these metals to biological primary productivity  

E-Print Network [OSTI]

THE DISTRIBUTION OF COPPER, MANGANESE, ZINC, AND IRON IN ANTARCTIC WATERS AND THE RELATION OF THE CONCENTRATIONS OF THESE METALS TO BIOLOGICAL PRIMARY PRODUCTIVITY A Thesis By MARTIN EDWARD ARHELGER Submitted to the Graduate College... of the Texas A& 1 University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE August I967 Major Subj ect: CHEMICAL OCEANOGRAPHY THE DISTRIBUTION OF COPPER, MANGANESE, ZINC, AND IRON IN ANTARCTIC WATERS AND THE RELATION...

Arhelger, Martin Edward

1967-01-01T23:59:59.000Z

470

Effects of protein or zinc deficiency on cellular immunity in vaccinated and non-vaccinated guinea pigs with experimentally induced pulmonary listeriosis  

E-Print Network [OSTI]

EFFECTS OF PROTEIN OR ZINC DEFICIENCY ON CELLULAR IMMUNITY IN VACCINATED AND NON-VACCINATED GUINEA PIGS WITH EXPERIMENTALLY INDUCED PULMONARY LISTERIOS I 8 A Thesi s by LEZLEE HELAINE GRAHAM COGHLAN Submitted to the Graduate College of Texas... animals were vaccinated on day 23, and all received aerosol challenge on day 33 and were killed 4 days later. Both zinc and protein deficiency resulted in animals that were clinically abnormal in growth patterns, hematology, ability to mount a delayed...

Coghlan, Lezlee Helaine Graham

1984-01-01T23:59:59.000Z

471

Effects of bacitracin methylene disalicylate, bacitracin zinc, and virginiamycin in combination with new coccidiostats on the performance of commercial broiler chickens  

E-Print Network [OSTI]

EFFECTS OF BACITRACIN METHYLENE DISALICYLATE, BACITRACIN ZINC, AND VIRGINIAMYCIN IN COMBINATION WITH NEW COCCIDIOSTATS ON THE PERFORMANCE OF COMMERCIAL BROILER CHICKENS A Thesis by KWADWO OFORI BEKOE Submitted to the Office of Graduate... Studies Texas A&M University In partial fulfilment of the requirements for the degree of MASTER OF SCIENCE August 1988 Major Subject: Poultry Science EFFECTS OF BACITRACIN METHYLENE DISALICYLATE, BACITRACIN ZINC, AND VIRGINIAMYCIN IN COMBINATION...

Ofori Bekoe, Kwadwo

1988-01-01T23:59:59.000Z

472

31P NMR study of the interaction of a commercial succinimide-type lubricating oil dispersant with zinc(II) bis(O,O'-di-iso-butyldithiophosphate)  

Science Journals Connector (OSTI)

31P nuclear magnetic resonance (NMR) spectroscopy has been employed to study the interactions between zinc(II) bis(O,O?-di-iso-butyldithiophosphate) and a commercial poly(isobutenyl)succinimide polyamine dispersant at both ambient and subambient (213–293 K) temperatures. The major species in solutions containing high N:Zn ratios is a complex between the two components in which only two nitrogen atoms of the polyamine dispersant are bonded to the zinc.

Philip G. Harrison; Paul Brown; James McManus

1992-01-01T23:59:59.000Z

473

The Role of Phosphorus and Soot on the Deactivation of Diesel Oxidation Catalysts  

SciTech Connect (OSTI)

The deactivation of diesel oxidation catalysts (DOCs) by soot contamination and lube-oil derived phosphorus poisoning is investigated. Pt/CeO2/-Al2O3 DOCs aged using three different protocols developed by the authors and six high mileage field-returned DOCs of similar formulation are evaluated for THC and CO oxidation performance using a bench-flow reactor. Collectively, these catalysts exhibit a variety of phosphorus and soot morphologies contributing to performance deactivation. To isolate and examine the contribution of each deactivation mechanism, performance evaluations are carried out for each DOC ''as received'' and after removal of surface carbon in a high-temperature oxidizing environment. In such a manner the deactivation contribution of soot contamination is de-convoluted from that of phosphorus poisoning. It will be shown that this is accomplished while preserving phosphorus (and to a lesser degree sulfur, calcium and zinc) chemistries and concentrations within the washcoat. Washcoat contaminant information and materials changes are characterized using electron-probe microanalysis (EPMA), X-ray diffraction (XRD), scanning electron microscopy and energy dispersive spectroscopy (SEM-EDS), BET surface area, oxygen storage capacity (OSC), X-ray fluorescence (XRF) and inductively coupled plasma (ICP) analysis, from which the relative severity of each mechanism can be quantified. Results show that soot contamination from diesel exhaust severely degrades THC and CO oxidation performance by acting as a catalyst surface diffusion barrier. This results in a considerable increase of light-off temperatures. In contrast, phosphorus poisoning, which is considered a significant deactivation mechanism in three-way catalysts, is shown to have minimal effect on DOC oxidation performance for the conditions studied here. Material changes include the formation of both Ce(III-IV) and aluminum phosphates which do not significantly hinder the THC and CO oxidation in lean exhaust. In addition, thermal aging and sulfur poisoning are shown to produce minimal contributions to the overall deactivation. Consequently, performance of aged DOCs after soot removal is observed to be comparable to that of a fresh catalyst under our testing conditions.

Eaton, Scott J [ORNL; Nguyen, Ke [University of Tennessee, Knoxville (UTK); Bunting, Bruce G [ORNL; Toops, Todd J [ORNL

2009-01-01T23:59:59.000Z

474

Clinical Reality of Measuring Upper-Limb Ability in Neurologic Conditions: A Systematic Review  

Science Journals Connector (OSTI)

Connell LA, Tyson SF. Clinical reality of measuring upper-limb ability in neurologic conditions: a systematic review. Objective To review the psychometric properties and clinical utility of upper-limb measurement tools in people with neurologic conditions to provide recommendations for practice. Data Sources MEDLINE, CINAHL, EMBASE, PEDro, and AMED. Study Selection Independent reviewers searched, selected, and extracted data from articles that assessed reliability, validity, ability to detect change, and clinical utility of measures of the upper limb in adult neurologic conditions. Data Extraction Measures with good psychometrics and 8 or higher (out of 10) clinical utility scores were recommended. Data Synthesis The searches identified 31 measures of the upper limb. However, only 2 measures fulfilled all of the psychometric and clinical utility criteria; the Box and Block Test and the Action Research Arm Test. Conclusions The Box and Block and the Action Research Arm Tests produce robust data and are feasible for use in clinical practice. Future development of new or existing measures should ensure the construct and content validity of the measure is clearly identified, standardized guidelines are easily available, and ensure that it is individualized and contemporary. Attention to measures of upper-limb activity for people who are unable to grip objects is also needed.

Louise A. Connell; Sarah F. Tyson

2012-01-01T23:59:59.000Z

475

Depositional facies of hydrocarbon reservoirs of upper Cherokee Group, Anadarko basin  

SciTech Connect (OSTI)

The Desmoinesian upper Cherokee Group sequence in the Anadarko basin is the subsurface equivalent of the Cabaniss Group of eastern Oklahoma. This sequence includes the Pink limestone, Skinner sandstone, Verdigris limestone, and Prue sandstone intervals. The upper Skinner sandstone, which has not been well documented, is an important hydrocarbon-producing reservoir in the Anadarko basin. The Skinner sandstone is represented by channel, delta-front-prodelta, and shallow marine facies. Channel facies consist of a primary elongate trend extending 40 mi southeast-northwest across Custer and Roger Mills Counties, Oklahoma. Several small secondary channels trending northeast-southwest were also observed. Active channel-fill sequences in the primary trend exceed 100 ft in thickness and represent the major producing reservoir of the upper Skinner sandstone. Delta-front-prodelta sequences are dominated by shale and interbedded sandstone-shale units. Shallow marine facies consist of massive coarsening-upward units that reach 300 ft in thickness. This facies belt is broad and slightly elongated, approximately 12 mi wide by 20 mi long, and trends northeast-southwest somewhat normal to channel facies orientation. Lithologically, the upper Skinner channel sandstone is feldspathic litharenite with abundant feldspar and quartz overgrowth. Both primary and secondary porosity were observed in the upper Skinner sandstone. Secondary porosity evolved mainly from dissolution of feldspar and lithic fragments. However, extensive cementation in the shallow marine facies has reduced porosity to negligible amounts and consequently reduced reservoir quality.

Puckette, J.O.; Al-Shaieb, Z. (Oklahoma State Univ., Stillwater (USA))

1989-08-01T23:59:59.000Z

476

Shut-down dose rate analyses for the ITER electron cyclotron-heating upper launcher  

Science Journals Connector (OSTI)

Abstract The electron cyclotron resonance heating upper launcher (ECHUL) is going to be installed in the upper port of the ITER tokamak thermonuclear fusion reactor for plasma mode stabilization (neoclassical tearing modes and the sawtooth instability). The paper reports the latest neutronic modeling and analyses which have been performed for the ITER reference front steering launcher design. It focuses on the port accessibility after reactor shut-down for which dose rate (SDDR) distributions on a fine regular mesh grid were calculated. The results are compared to those obtained for the ITER Dummy Upper Port. The calculations showed that the heterogeneous ECHUL design gives rise to enhanced radiation streaming as compared to the homogenous dummy upper port. Therefore the used launcher geometry was upgraded to a more recent development stage. The inter-comparison shows a significant improvement of the launchers shielding properties but also the necessity to further upgrade the shielding performance. Furthermore, the analysis for the homogenous dummy upper port, which represents optimal shielding inside the launcher, demonstrates that the shielding upgrade also needs to include the launcher's environment.

Bastian Weinhorst; Arkady Serikov; Ulrich Fischer; Lei Lu; Peter Spaeh; Dirk Strauss

2014-01-01T23:59:59.000Z

477

Perovskite catalysts for oxidative coupling  

DOE Patents [OSTI]

Perovskites of the structure A.sub.2 B.sub.2 C.sub.3 O.sub.10 are useful as catalysts for the oxidative coupling of lower alkane to heavier hydrocarbons. A is alkali metal; B is lanthanide or lanthanum, cerium, neodymium, samarium, praseodymium, gadolinium or dysprosium; and C is titanium.

Campbell, Kenneth D. (Charleston, WV)

1991-01-01T23:59:59.000Z

478

Perovskite catalysts for oxidative coupling  

DOE Patents [OSTI]

Perovskites of the structure A[sub 2]B[sub 2]C[sub 3]O[sub 10] are useful as catalysts for the oxidative coupling of lower alkane to heavier hydrocarbons. A is alkali metal; B is lanthanide or lanthanum, cerium, neodymium, samarium, praseodymium, gadolinium or dysprosium; and C is titanium.

Campbell, K.D.

1991-06-25T23:59:59.000Z

479

Solid oxide fuel cell generator  

DOE Patents [OSTI]

A solid oxide fuel cell generator has a plenum containing at least two rows of spaced apart, annular, axially elongated fuel cells. An electrical conductor extending between adjacent rows of fuel cells connects the fuel cells of one row in parallel with each other and in series with the fuel cells of the adjacent row. 5 figures.

Di Croce, A.M.; Draper, R.

1993-11-02T23:59:59.000Z

480

Oxidation kinetics of aluminum diboride  

SciTech Connect (OSTI)

The oxidation characteristics of aluminum diboride (AlB{sub 2}) and a physical mixture of its constituent elements (Al+2B) were studied in dry air and pure oxygen using thermal gravimetric analysis to obtain non-mechanistic kinetic parameters. Heating in air at a constant linear heating rate of 10 °C/min showed a marked difference between Al+2B and AlB{sub 2} in the onset of oxidation and final conversion fraction, with AlB{sub 2} beginning to oxidize at higher temperatures but reaching nearly complete conversion by 1500 °C. Kinetic parameters were obtained in both air and oxygen using a model-free isothermal method at temperatures between 500 and 1000 °C. Activation energies were found to decrease, in general, with increasing conversion for AlB{sub 2} and Al+2B in both air and oxygen. AlB{sub 2} exhibited O{sub 2}-pressure-independent oxidation behavior at low conversions, while the activation energies of Al+2B were higher in O{sub 2} than in air. Differences in the composition and morphology between oxidized Al+2B and AlB{sub 2} suggested that Al{sub 2}O{sub 3}–B{sub 2}O{sub 3} interactions slowed Al+2B oxidation by converting Al{sub 2}O{sub 3} on aluminum particles into a Al{sub 4}B{sub 2}O{sub 9} shell, while the same Al{sub 4}B{sub 2}O{sub 9} developed a needle-like morphology in AlB{sub 2} that reduced oxygen diffusion distances and increased conversion. The model-free kinetic analysis was critical for interpreting the complex, multistep oxidation behavior for which a single mechanism could not be assigned. At low temperatures, moisture increased the oxidation rate of Al+2B and AlB{sub 2}, but both appear to be resistant to oxidation in cool, dry environments. - Graphical abstract: Isothermal kinetic data for AlB{sub 2} in air, showing a constantly decreasing activation energy with increasing conversion. Model-free analysis allowed for the calculation of global kinetic parameters despite many simultaneous mechanisms occurring concurrently. (a) Time–temperature plots, (b) conversion as a function of time, (c) Arrhenius plots used to calculate activation energies, and (d) activation energy as a function of conversion. Display Omitted - Highlights: • First reported kinetic parameters for AlB{sub 2} and Al+2B oxidation in air and O{sub 2}. • Possible mechanism of enhanced boron combustion presented. • Moisture sensitivity shown to be problematic for AlB{sub 2}, less for Al+2B.

Whittaker, Michael L., E-mail: michaelwhittaker2016@u.northwestern.edu [Department of Materials Science and Engineering, University of Utah, 122S. Central Campus Drive, Salt Lake City, UT 84112 (United States); Sohn, H.Y. [Department of Metallurgical Engineering, University of Utah, 135S 1460 E, Rm 00412, Salt Lake City, UT 84112 (United States); Cutler, Raymond A. [Ceramatec, Inc., 2425S. 900W., Salt Lake City, UT 84119 (United States)

2013-11-15T23:59:59.000Z

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481

Role of Nitrous Oxide in Ambulatory Anaesthesia  

Science Journals Connector (OSTI)

As the oldest anaesthetic still in routine use, the continued role of nitrous oxide is frequently questioned. There are a few well-defined situations in which nitrous oxide is contraindicated or undesirable; i...

Sarah Billingham; Ian Smith

2014-12-01T23:59:59.000Z

482

Complex oxides useful for thermoelectric energy conversion  

DOE Patents [OSTI]

The invention provides for a thermoelectric system comprising a substrate comprising a first complex oxide, wherein the substrate is optionally embedded with a second complex oxide. The thermoelectric system can be used for thermoelectric power generation or thermoelectric cooling.

Majumdar, Arunava (Orinda, CA); Ramesh, Ramamoorthy (Moraga, CA); Yu, Choongho (College Station, TX); Scullin, Matthew L. (Berkeley, CA); Huijben, Mark (Enschede, NL)

2012-07-17T23:59:59.000Z

483

Rare Iron Oxide in Ancient Chinese Pottery  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Rare Iron Oxide in Ancient Chinese Pottery Rare Iron Oxide in Ancient Chinese Pottery Print Friday, 26 September 2014 14:37 Jian ware (or Tenmoku) ceramic bowls, famous for their...

484

NANO - "Green" metal oxides ... | ornl.gov  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

NANO - "Green" metal oxides ... Water and nano-sized particles isolated from trees, plants and algae are the ingredients of a new recipe for low-cost metal oxides that are widely...

485

Vapor phase modifiers for oxidative coupling  

DOE Patents [OSTI]

Volatilized metal compounds retard vapor phase alkane conversion reactions in oxidative coupling processes that convert lower alkanes to higher hydrocarbons.

Warren, Barbara K. (Charleston, WV)

1991-01-01T23:59:59.000Z

486

High quality oxide films on substrates  

DOE Patents [OSTI]

A method is described for providing an oxide film of a material on the surface of a substrate using a reactive deposition of the material onto the substrate surface in the presence of a solid or liquid layer of an oxidizing gas. The oxidizing gas is provided on the substrate surface in an amount sufficient to dissipate the latent heat of condensation occurring during deposition as well as creating a favorable oxidizing environment for the material. 4 figures.

Ruckman, M.W.; Strongin, M.; Gao, Y.L.

1994-02-01T23:59:59.000Z

487

An early history of pure shear in the upper plate of the raft river  

Open Energy Info (EERE)

early history of pure shear in the upper plate of the raft river early history of pure shear in the upper plate of the raft river metamorphic core complex- black pine mountains, southern Idaho Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: An early history of pure shear in the upper plate of the raft river metamorphic core complex- black pine mountains, southern Idaho Details Activities (1) Areas (1) Regions (0) Abstract: Although commonly obscured by simple shear, pure shear fabrics occur locally within many metamorphic core complexes. The cover rocks to the Raft River metamorphic core complex exposed within the Black Pine Mountains display an early coaxial strain history which developed prior to the formation of low-angle fault-bounded allochthons. At higher structural levels this is documented by pressure shadows with straight sutures, and

488

An Integrated Geophysical Analysis Of The Upper Crust Of The Southern Kenya  

Open Energy Info (EERE)

Upper Crust Of The Southern Kenya Upper Crust Of The Southern Kenya Rift Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: An Integrated Geophysical Analysis Of The Upper Crust Of The Southern Kenya Rift Details Activities (0) Areas (0) Regions (0) Abstract: Previous interpretations of seismic data collected by the Kenya Rift International Seismic Project (KRISP) experiments indicate the presence of crustal thickening within the rift valley area beneath the Kenya dome, an uplift centred on the southern part of the Kenya rift. North of the dome, these interpretations show thinning of the crust and an increase in crustal extension. To the south near the Kenya/Tanzania border, crustal thinning associated with the rift is modest. Our study was aimed at further investigating crustal structure from this dome southwards via a

489

A Case Study Of The Influx Of Upper Mantle Fluids Into The Crust | Open  

Open Energy Info (EERE)

Influx Of Upper Mantle Fluids Into The Crust Influx Of Upper Mantle Fluids Into The Crust Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: A Case Study Of The Influx Of Upper Mantle Fluids Into The Crust Details Activities (0) Areas (0) Regions (0) Abstract: Geochemical and geophysical investigations in the Bohai Gulf and adjacent areas, China, indicate that uplift of the high-conductivity layer in the lithosphere coincides with the area of high heat flow. In this area are distributed abundant oil and gas fields in a Tertiary fault basin and also large quantities of basaltic rocks. Gas fields, mostly CO2 bearing, occur at the basin margins, where a widespread alkaline olivine basalt has high contents of gold. Geochemical prospecting of the surface (soil and soil gas) in the area indicates that there is an anomaly zone of

490

Understanding the importance of natural neuromotor strategy in upper extremity neuroprosthetic control  

Science Journals Connector (OSTI)

A key challenge in upper extremity neuroprosthetics is variable levels of skill and inconsistent functional recovery. We examine the feasibility and benefits of using natural neuromotor strategies through the design and development of a proof-of-concept model for a feed-forward upper extremity neuroprosthetic controller. Developed using Artificial Neural Networks, the model is able to extract and classify neural correlates of movement intention from multiple brain regions that correspond to functional movements. This is unique compared to contemporary controllers that record from limited physiological sources or require learning of new strategies. Functional MRI (fMRI) data from healthy subjects (N = 13) were used to develop the model, and a separate group (N = 4) of subjects were used for validation. Results indicate that the model is able to accurately (81%) predict hand movement strictly from the neural correlates of movement intention. Information from this study is applicable to the development of upper extremity technology aided interventions.

Dominic E. Nathan; Robert W. Prost; Stephen J. Guastello; Dean C. Jeutter

2014-01-01T23:59:59.000Z

491

An Upper Limit to the Mass of rho1 Cnc's Radial Velocity Companion  

E-Print Network [OSTI]

Doppler spectroscopy of rho1 Cnc has detected evidence of a companion with an orbital period of 14.65 days and a minimum mass of 0.88 Jupiter masses. Astrometric observations performed with the Hubble Space Telescope Fine Guidance Sensor 1r using a novel new observing technique have placed an upper limit on the astrometric reflex motion of rho1 Cnc in a time period of only one month. These observations detected no reflex motion induced by the 14.65 day period radial velocity companion, allowing us to place a 3-sigma upper limit of \\~0.3 milliarcseconds on the semi-major axis of this motion, ruling out the preliminary Hipparcos value of 1.15 milliarcseconds. The corresponding upper limit on the true mass of the companion is ~30 Mj, confirming that it is a sub-stellar object.

Melissa A. McGrath; Edmund Nelan; David C. Black; George Gatewood; Keith Noll; Al Schultz; Stephen Lubow; Inwoo Han; Tomasz F. Stepinski; Thomas Targett

2001-12-03T23:59:59.000Z

492

Oxidative Transformation of Triclosan and Chlorophene by  

E-Print Network [OSTI]

Oxidative Transformation of Triclosan and Chlorophene by Manganese Oxides H U I C H U N Z H A N G of Technology, Atlanta, Georgia 30332 The antibacterial agents triclosan (5-chloro-2-(2,4- dichlorophenoxy(-MnO2 andMnOOH)yielding MnII ions. Both the initial reaction rate and adsorption of triclosan to oxide

Huang, Ching-Hua

493

Nitrous oxide emissions from wastewater treatment processes  

Science Journals Connector (OSTI)

...specific ammonia oxidation rate. Symbols represent...Research Council (ARC) for funding this...correlated to its ammonia oxidation rate. 51 Arp, D...1146/annurev.micro.61.080706.093449...1146/annurev.micro.61.080706.093449...2004 Anaerobic oxidation of inorganic nitrogen...

2012-01-01T23:59:59.000Z

494

REVERSIBLE SOLID OXIDE CELLS Mogens Mogensen1  

E-Print Network [OSTI]

The reversibility of solid oxide fuel cells (SOFC), i.e. that they could also work in the solid oxide electrolyser1 REVERSIBLE SOLID OXIDE CELLS Mogens Mogensen1 , Søren Højgaard Jensen1,2 , Anne Hauch1,3 , Ib Chorkendorff2 and Torben Jacobsen3 1 Fuel Cell and Solid State Chemistry Department Risø National Laboratory

495

Solid Oxide Electrolysis Cells Performance and Durability  

E-Print Network [OSTI]

Title: Solid Oxide Electrolysis Cells ­ Performance and Durability Department: Fuel Cells and SolidSolid Oxide Electrolysis Cells ­ Performance and Durability Anne Hauch Risø-PhD-37(EN) Risø : Images from transmission electron microscopy investigation of the H2 electrode for the solid oxide cell

496

Photo-oxides of Carcinogenic Hydrocarbons  

Science Journals Connector (OSTI)

... are involved in the biological action of carcinogenic hydrocarbons, we have attempted to isolate the photo-oxides of some of these hydrocarbons. Such ... -oxides of some of these hydrocarbons. Such photo-oxides would naturally be insoluble in water and hence would represent merely one stage in ...

J. W. COOK; R. MARTIN; E. M. F. ROE

1939-06-17T23:59:59.000Z

497

Dense high temperature ceramic oxide superconductors  

DOE Patents [OSTI]

Dense superconducting ceramic oxide articles of manufacture and methods for producing these articles are described. Generally these articles are produced by first processing these superconducting oxides by ceramic processing techniques to optimize materials properties, followed by reestablishing the superconducting state in a desired portion of the ceramic oxide composite.

Landingham, Richard L. (Livermore, CA)

1993-01-01T23:59:59.000Z

498

ORIGINAL ARTICLE Sulfur oxidizers dominate carbon fixation  

E-Print Network [OSTI]

). Methylotrophs and iron oxidizers were also active in plume waters and expressed key proteins for methane by bacteria (especially, alpha-, gamma- and epsilon-proteobacteria) that likely participate in the oxidationORIGINAL ARTICLE Sulfur oxidizers dominate carbon fixation at a biogeochemical hot spot in the dark

Hansell, Dennis

499

Nanotube Fabrication byNanotube Fabrication by Anodic Aluminum Oxide,Anodic Aluminum Oxide,  

E-Print Network [OSTI]

Nanotube Fabrication byNanotube Fabrication by Anodic Aluminum Oxide,Anodic Aluminum Oxide, Self-regulating phenomena in materials science: Self-assembly of nanopores during anodic oxidation of aluminum (AAO) Self combined anodic aluminum oxide (AAO) nanostructures with atomic layer deposition (ALD) to fabricate

Rubloff, Gary W.

500

ZnO Nanorod Arrays for Organic Solar Cells  

Science Journals Connector (OSTI)

We report on the synthesis and characterization of vapor phase grown zinc oxide nanorod arrays on sputtered aluminum-doped zinc oxide substrates. These arrays can serve as...

Conradt, Jonas; Thiele, Cornelius; Reinhard, Manuel; Lösch, Oliver; Sartor, Janos; Maier-Flaig, Florian; Schneider, Reinhard; Fotouhi, Mohammad; Pfundstein, Peter; Zibat, Volker; Colsmann, Alexander; Gerthsen, Dagmar; Lemmer, Uli; Kalt, Heinz