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Note: This page contains sample records for the topic "zinc oxide upper" from the National Library of EnergyBeta (NLEBeta).
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We encourage you to perform a real-time search of NLEBeta
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1

Characterization of Amorphous Zinc Tin Oxide Semiconductors....  

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

Amorphous Zinc Tin Oxide Semiconductors. Characterization of Amorphous Zinc Tin Oxide Semiconductors. Abstract: Amorphous zinc tin oxide (ZTO) was investigated to determine the...

2

Zinc oxide varistors and/or resistors  

DOE Patents [OSTI]

Varistors and/or resistors that includes doped zinc oxide gel microspheres. The doped zinc oxide gel microspheres preferably have from about 60 to about 95% by weight zinc oxide and from about 5 to about 40% by weight dopants based on the weight of the zinc oxide. The dopants are a plurality of dopants selected from silver salts, boron oxide, silicon oxide and hydrons oxides of aluminum, bismuth, cobalt, chromium, manganese, nickel, and antimony.

Arnold, Jr., Wesley D. (Oak Ridge, TN); Bond, Walter D. (Knoxville, TN); Lauf, Robert J. (Oak Ridge, TN)

1993-01-01T23:59:59.000Z

3

MICROSTRUCTURE-PROPERTY RELATIONSHIPS OF A ZINC OXIDE VARISTOR MATERIAL  

E-Print Network [OSTI]

RELATIONSHIPS OF A ZINC OXIDE VARISTOR MATERIAL Pamelaresistors, and zinc oxide varistors are semiconductorRELATIONSHIPS OF A ZINC OXIDE VARISTOR MATERIAL CONTENTS

Williama, Pamela Louise

2011-01-01T23:59:59.000Z

4

THE MICROSTRUCTURAL LOCATION OF THE INTERGRANULAR METAL OXIDE PHASE IN A ZINC OXIDE VARISTOR  

E-Print Network [OSTI]

OXIDE PHASE IN A ZINC OXIDE VARISTOR MICROSI'RUCTIJRALMETAL OXIDE PHASE IN A ZINC OXIDE VARISTOR David R. Clarke

Clarke, D. E

2011-01-01T23:59:59.000Z

5

THE MICROSTRUCTURAL LOCATION OF THE INTERGRANULAR METAL OXIDE PHASE IN A ZINC OXIDE VARISTOR  

E-Print Network [OSTI]

I• I ntroduct Ion Metal oxide varistors are ceramic semi-SECTION M METAL' OXIDE PHASE IN A ZINC OXIDE VARISTORTHE INTERGRANULAR METAL OXIDE PHASE IN A ZINC OXIDE VARISTOR

Clarke, D. E

2011-01-01T23:59:59.000Z

6

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

7

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

8

Kinetics of the reduction of the zinc oxide in zinc ferrite with iron  

SciTech Connect (OSTI)

Electric arc furnace (EAF) dust, which can be considered as a by-product of the steel recycling process, contains significant quantities of recoverable zinc and iron, as well as hazardous elements such as cadmium, lead and chromium, which can be leached by ground water. The zinc in the EAF dust is found almost entirely in the form of either zinc oxide or zinc ferrite, the latter accounting for 20 to 50 percent of the total zinc. It is important that an efficient process be developed which renders the dust inert, while reclaiming the valuable metals to off-set processing costs. During the conventional carbothermic reduction processes, iron is formed, and this iron can participate in the reduction of the zinc oxide in zinc ferrite. In the present work, the reduction of the zinc oxide in zinc ferrite by iron according to the following reaction: ZnO{sup {sm_bullet}}Fe{sub 2}O{sub (s.s.)} + 2 Fe{sub (s)} = Zn{sub (g)} + 4 FeO{sub (s)} was studied in an argon atmosphere using a thermogravimetric technique. First, a thermodynamic analysis was performed using the F*A*C*T computational system. Then, the effects of briquette aspect ratio (l/d), temperature, zinc ferrite particle size, amount of iron added, as well as additions such as lime, sodium chloride, and calcium fluoride were investigated.

Donald, J.R.; Pickles, C.A. [Queen`s Univ., Kingston, Ontario (Canada). Dept. of Materials and Metallurgical Engineering

1995-12-31T23:59:59.000Z

9

MICROSTRUCTURE-PROPERTY RELATIONSHIPS OF A ZINC OXIDE VARISTOR MATERIAL  

E-Print Network [OSTI]

varistor contains smaller amounts of a number of other metal oxideoxide based varistor material contain- ing cobalt and rare earth metals,VARISTOR MATERIAL Pamela Louise Williams ABSTRACT Zinc oxide ceramics containing barium, cobalt. and rare earth metal

Williama, Pamela Louise

2011-01-01T23:59:59.000Z

10

Formation of zinc oxide films using submicron zinc particle dispersions. |  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation ProposedUsing ZirconiaPolicyFeasibilityFieldMinds" Give formsingle-phase BaOEMSL zinc

11

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

12

J Am Cerom Soc 73 [lo] 3026-32 (19901 Electrical Properties of Individual Zinc Oxide  

E-Print Network [OSTI]

properties of single interfaces and grain boundaries. [Keywords: grain boundaries, zinc oxide, varistors semiconductor, zinc oxide (ZnO), which is used commercially as a varistor material. This is an excellentJ Am Cerom Soc 73 [lo] 3026-32 (19901 Electrical Properties of Individual Zinc Oxide Grain

Rohrer, Gregory S.

13

Size effects on varistor properties made from zinc oxide nanoparticles by low temperature spark plasma sintering  

E-Print Network [OSTI]

1 Size effects on varistor properties made from zinc oxide nanoparticles by low temperature spark of nanostructured varistors by Spark Plasma Sintering (SPS) are investigated, using 8 nm zinc oxide nanoparticles to 600°C. Keywords: Organometallic, Zinc oxide, Nanoparticles, Spark plasma sintering, Varistor hal

Paris-Sud XI, Université de

14

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.

15

The Electrical and Band-Gap Properties of Amorphous Zinc-Indium-Tin Oxide Thin Films  

E-Print Network [OSTI]

MRSEC The Electrical and Band-Gap Properties of Amorphous Zinc-Indium-Tin Oxide Thin Films D Science & Engineering Center For zinc-indium-tin oxide (ZITO) films, grown by pulsed-laser deposition was replaced by substitution with zinc and tin in equal molar proportions (co-substitution). All ZITO films

Shahriar, Selim

16

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

17

Rare earth doped zinc oxide varistors  

DOE Patents [OSTI]

A varistor includes a Bi-free, essentially homogeneous sintered body of a ceramic composition including, expressed as nominal weight %, 0.2-4.0% oxide of at least one rare earth element, 0.5-4.0% Co.sub.3 O.sub.4, 0.05-0.4% K.sub.2 O, 0.05-0.2% Cr.sub.2 O.sub.3, 0-0.2% CaO, 0.00005-0.01% Al.sub.2 O.sub.3, 0-2% MnO, 0-0.05% MgO, 0-0.5% TiO.sub.3, 0-0.2% SnO.sub.2, 0-0.02% B.sub.2 O.sub.3, balance ZnO.

McMillan, April D. (Knoxville, TN); Modine, Frank A. (Oak Ridge, TN); Lauf, Robert J. (Oak Ridge, TN); Alim, Mohammad A. (Medina, OH); Mahan, Gerald D. (Oak Ridge, TN); Bartkowiak, Miroslaw (Oak Ridge, TN)

1998-01-01T23:59:59.000Z

18

Rare earth doped zinc oxide varistors  

DOE Patents [OSTI]

A varistor includes a Bi-free, essentially homogeneous sintered body of a ceramic composition including, expressed as nominal weight %, 0.2--4.0% oxide of at least one rare earth element, 0.5--4.0% Co{sub 3}O{sub 4}, 0.05--0.4% K{sub 2}O, 0.05--0.2% Cr{sub 2}O{sub 3}, 0--0.2% CaO, 0.00005--0.01% Al{sub 2}O{sub 3}, 0--2% MnO, 0--0.05% MgO, 0--0.5% TiO{sub 3}, 0--0.2% SnO{sub 2}, 0--0.02% B{sub 2}O{sub 3}, balance ZnO. 4 figs.

McMillan, A.D.; Modine, F.A.; Lauf, R.J.; Alim, M.A.; Mahan, G.D.; Bartkowiak, M.

1998-12-29T23:59:59.000Z

19

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

20

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

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

Search Powered by Explorit Topic List Advanced Search Sample search results for: aluminum-doped zinc oxide Page: << < 1 2 3 4 5 > >> 1 Introduction Nanodevices are supposed to...

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

Biochemistry of mobile zinc and nitric oxide revealed by fluorescent sensors  

E-Print Network [OSTI]

Biological mobile zinc and nitric oxide (NO) are two prominent examples of inorganic compounds involved in numerous signaling pathways in living systems. In the past decade, a synergy of regulation, signaling, and translocation ...

Pluth, Michael D.

22

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

23

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

24

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

25

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

26

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

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

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

29

Pencil-like zinc oxide micro/nano-scale structures: Hydrothermal synthesis, optical and photocatalytic properties  

SciTech Connect (OSTI)

Graphical abstract: - Highlights: • Zinc oxide micro/nanopencils have been synthesized hydrothermally. • Photocatalytic activity has been evaluated by the degradation of methylene blue under UV light irradiation. • ZnO nanopencils exhibit much higher photocatalytic activity than the commercial ZnO. - Abstract: Zinc oxide micro/nanopencils have been successfully synthesized by hydrothermal process using zinc acetate and diamines as structure-directing agents. The morphology, the structure, the crystallinity and the composition of the materials were investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy and X-ray photoelectron spectroscopy (XPS). The optical properties of synthesized ZnO were investigated by UV–vis spectroscopy. The photocatalytic activity of the material has been evaluated by the degradation of methylene blue under UV irradiation. As a result, after the lapse of 150 min, around 82% bleaching was observed, with ZnO nanopencils yielding more photodegradation compared to that of commercial ZnO (61%)

Moulahi, A. [Laboratoire de Chimie de la Matière Condensée, IPEIT, Université de Tunis, 2 rue Jawaher Lel Nehru 1008, B. P. 229 Montfleury (Tunisia); Sediri, F., E-mail: faouzi.sediri@ipeit.rnu.tn [Laboratoire de Chimie de la Matière Condensée, IPEIT, Université de Tunis, 2 rue Jawaher Lel Nehru 1008, B. P. 229 Montfleury (Tunisia); Faculté des Sciences de Tunis, Université de Tunis El Manar, 2092 El Manar (Tunisia)

2013-10-15T23:59:59.000Z

30

Hot gas desulfurization with sorbents containing oxides of zinc, iron, vanadium and copper  

SciTech Connect (OSTI)

The main objective of this research is to evaluate the desulfurization performance of novel sorbents consisting of different combinations of zinc, iron, vanadium and copper oxides; and to develop a sorbent which can reduce H{sub 2}S levels to less than 1 ppmv, which can stabilize zinc, making operations above 650{degrees}C possible, and which can produce economically recoverable amounts of elemental sulfur during regeneration. This objective will be accomplished by evaluating the sorbent performance using fixed-bed and TGA experiments supported by sorbent characterization at various reaction extents. In the seventh quarter, the screening of the promoted sorbents in the packed bed reactor was continued. The results of this work were presented at the 1992 University Coal Research Contractors, Review Conference at Pittsburgh, PA.

Akyurtlu, A.; Akyurtlu, J.F.

1992-01-01T23:59:59.000Z

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

Surface nanostructuring by ion-induced localized plasma expansion in zinc oxide  

SciTech Connect (OSTI)

Creation of hillock-like nanostructures on the surface of zinc oxide single crystals by irradiation with slow highly charged ions is reported. At constant kinetic energy, the nanostructures were only observed after irradiation with ions of potential energies above a threshold between 19.1?keV and 23.3?keV. The size of the nanostructures increases as a function of potential energy. A plasma expansion approach is used to explain the nanostructures creation. The calculations showed that the surface nanostructures became taller with the increase of ionic temperature. The influence of charged cluster formation and the relevance of their polarity are discussed.

El-Said, A. S., E-mail: elsaid@kfupm.edu.sa, E-mail: a.s.el-said@hzdr.de [Physics Department, King Fahd University of Petroleum and Minerals, Dhahran 31261 (Saudi Arabia); Institute of Ion Beam Physics and Materials Research, Helmholtz-Zentrum Dresden-Rossendorf (HZDR), 01328 Dresden (Germany); Physics Department, Faculty of Science, Mansoura University, 35516 Mansoura (Egypt); Moslem, W. M. [Department of Physics, Faculty of Science, Port Said University, Port Said 42521 (Egypt); Centre for Theoretical Physics, British University in Egypt (BUE), El-Shorouk City, Cairo (Egypt); Djebli, M. [Theoretical Physics Laboratory, Faculty of Physics USTHB, B.P. 32 Bab Ezzour, 16079 Algiers (Algeria)

2014-06-09T23:59:59.000Z

33

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

34

Analysis of indium zinc oxide thin films by laser-induced breakdown spectroscopy  

SciTech Connect (OSTI)

We have performed spectroscopic analysis of the plasma generated by Nd:YAG ({lambda} = 266 nm) laser irradiation of thin indium zinc oxide films with variable In content deposited by combinatorial pulsed laser deposition on glass substrates. The samples were irradiated in 5 x 10{sup 4} Pa argon using laser pulses of 5 ns duration and 10 mJ energy. The plasma emission spectra were recorded with an Echelle spectrometer coupled to a gated detector with different delays with respect to the laser pulse. The relative concentrations of indium and zinc were evaluated by comparing the measured spectra to the spectral radiance computed for a plasma in local thermal equilibrium. Plasma temperature and electron density were deduced from the relative intensities and Stark broadening of spectral lines of atomic zinc. Analyses at different locations on the deposited thin films revealed that the In/(In + Zn) concentration ratio significantly varies over the sample surface, from 0.4 at the borders to about 0.5 in the center of the film. The results demonstrate that laser-induced breakdown spectroscopy allows for precise and fast characterization of thin films with variable composition.

Popescu, A. C. [LP3, CNRS - Universite Aix-Marseille, 163 Ave. de Luminy, Marseille 13288 (France); National Institute for Lasers, Plasma and Radiation Physics, Magurele, Ilfov 077125 (Romania); Beldjilali, S. [LP3, CNRS - Universite Aix-Marseille, 163 Ave. de Luminy, Marseille 13288 (France); LPPMCA, Universite des Sciences et de la Technologie d'Oran, BP 1505 El Mnaouer, Oran (Algeria); Socol, G.; Mihailescu, I. N. [National Institute for Lasers, Plasma and Radiation Physics, Magurele, Ilfov 077125 (Romania); Craciun, V. [National Institute for Lasers, Plasma and Radiation Physics, Magurele, Ilfov 077125 (Romania); MAIC, University of Florida, Gainesville, FL 32611 (United States); Hermann, J. [LP3, CNRS - Universite Aix-Marseille, 163 Ave. de Luminy, Marseille 13288 (France)

2011-10-15T23:59:59.000Z

35

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

36

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

37

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

38

Zinc Oxide Nanowire As an Electron-Extraction Layer for Broadband Polymer Photodetectors with an Inverted Device Structure  

E-Print Network [OSTI]

of the nanoscale morphology of the interpenetrating electron donor/acceptor networks, the detectivity of solutionZinc Oxide Nanowire As an Electron-Extraction Layer for Broadband Polymer Photodetectors,*, and Yong Cao§ Department of Polymer Engineering, College of Polymer Science and Polymer Engineering

Wang, Deli

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

High sensitive formaldehyde graphene gas sensor modified by atomic layer deposition zinc oxide films  

SciTech Connect (OSTI)

Zinc oxide (ZnO) thin films with various thicknesses were fabricated by Atomic Layer Deposition on Chemical Vapor Deposition grown graphene films and their response to formaldehyde has been investigated. It was found that 0.5?nm ZnO films modified graphene sensors showed high response to formaldehyde with the resistance change up to 52% at the concentration of 9 parts-per-million (ppm) at room temperature. Meanwhile, the detection limit could reach 180 parts-per-billion (ppb) and fast response of 36?s was also obtained. The high sensitivity could be attributed to the combining effect from the highly reactive, top mounted ZnO thin films, and high conductive graphene base network. The dependence of ZnO films surface morphology and its sensitivity on the ZnO films thickness was also investigated.

Mu, Haichuan; Zhang, Zhiqiang; Wang, Keke; Xie, Haifen, E-mail: hfxie@ecust.edu.cn [Department of Physics, School of Science, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237 (China); Zhao, Xiaojing; Liu, Feng [Department of Physics, Shanghai Normal University, 100 Guilin Road, Shanghai 200234 (China)

2014-07-21T23:59:59.000Z

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

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

44

X-ray Characterisation of Zinc Oxide (ZnO) Single Crystal Substrates  

SciTech Connect (OSTI)

Single crystal substrates of low defect density are paramount for fully realizing the numerous applications of zinc oxide (ZnO) wide bandgap semiconductors. While ZnO substrates are commercially available from various vendors, very little information is available on the structural properties of these substrates. Therefore, an extensive evaluation of available substrates would serve as a basis for the development of ZnO based devices and technologies. In this study, bulk ZnO single crystal substrates grown by different growth techniques have been characterised using synchrotron white beam X-ray topography and high resolution X-ray diffraction. The substrates exhibit a wide range of dislocation densities from as high as 10{sup 6} cm{sup -2} down to less than 1000 cm{sup -2} depending on the growth technique employed. The authors evaluation reveals that ZnO crystals grown by the hydrothermal technique possess the best structural quality with dislocation densities of 800-1000 cm{sup -2} and rocking curves with a full width half maximum of less than 12 arc seconds.

Dhanaraj, G.; Raghothamachar, B; Dudley, M

2010-01-01T23:59:59.000Z

45

Heat induced nanoforms of zinc oxide quantum dots and their characterization  

SciTech Connect (OSTI)

In our studies we observed heat induced phase transitions of Zinc oxide quantum dots at 60, 200, 360 and 400 Degree-Sign C, where all the transitions were irreversible except the transition at 60 Degree-Sign C which wasa reversible one. The phase transition at 60 Degree-Sign C indicated a heat induced conformational change which was supported here by studying polarizing micrographs of ZnO quantum dots thin film. The X-ray diffraction studies of the sample fired at different temperatures as indicated by the thermal analysis were performed in order to understand the changes occurred due to transitions. The study also indicated a new and simple approach to develop ZnO nanorods by just thermal decomposition of the ZnO quantum dots firing in furnace at 200 Degree-Sign C with 2h soaking. In order to have a proper insight of the structural changes we performed scanning electron microscopy. Optical characterization was done by UV-Vis and fluorescence spectrophotometer.

Dey, Anindita [Jadavpur University, Physics Department (India); Basu, Ruma [Jogamaya Devi College, Physics department (India); Das, Sukhen, E-mail: sukhendasju@gmail.com; Nandy, Papiya [Jadavpur University, Physics Department (India)

2012-02-15T23:59:59.000Z

46

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

47

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

48

Hot gas desulfurization with sorbents containing oxides of zinc, iron, vanadium and copper. Quarterly technical progress report, July 1992  

SciTech Connect (OSTI)

The main objective of this research is to evaluate the desulfurization performance of novel sorbents consisting of different combinations of zinc, iron, vanadium and copper oxides; and to develop a sorbent which can reduce H{sub 2}S levels to less than 1 ppmv, which can stabilize zinc, making operations above 650{degrees}C possible, and which can produce economically recoverable amounts of elemental sulfur during regeneration. This objective will be accomplished by evaluating the sorbent performance using fixed-bed and TGA experiments supported by sorbent characterization at various reaction extents. In the seventh quarter, the screening of the promoted sorbents in the packed bed reactor was continued. The results of this work were presented at the 1992 University Coal Research Contractors, Review Conference at Pittsburgh, PA.

Akyurtlu, A.; Akyurtlu, J.F.

1992-09-01T23:59:59.000Z

49

Nitric oxide reactions of bio-Inspired zinc and cobalt complexes  

E-Print Network [OSTI]

Chapter 1. Bioinorganic Chemistry of Nitric Oxide and of Some of Its Targets The redox-active nature of nitric oxide (NO) regulates the chemistry and roles of NO in biology. The interactions of NO with nitric oxide synthases, ...

Kozhukh, Julia, 1985-

2012-01-01T23:59:59.000Z

50

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

51

The effect of deposition power on the electrical properties of Al-doped zinc oxide thin films  

SciTech Connect (OSTI)

We investigated the effect on the electronic properties of aluminum (Al)-zinc oxide (ZnO) films by modulating the radio frequency sputtering power. Our experimental results show that increasing the sputtering power increases the Al doping concentration, decreases the resistivity, and also shifts the Zn 2p and O 1s to higher binding energy states. Our local-density approximation (LDA) and LDA+U calculations show that the shift in higher binding energy and resistivity decrease are due to an enhancement of the O 2p-Zn 3d coupling and the modification of the Zn 4s-O 2p interaction in ZnO induced by Al doping.

Chun, B. S.; Choi, Daniel S. [Department of Chemical and Materials Engineering, University of Idaho, Moscow, Idaho 83844-3024 (United States); Wu, H. C.; Shvets, I. V. [CRANN, School of Physics, Trinity College Dublin, Dublin 2 (Ireland); Abid, M. [IPMC, Ecole Polytechnique Federale de Lausanne, Station 3, CH-1015 Lausanne (Switzerland); King Abdullah Institute for Nanotechnology, King Saud University, Riyadh 11451 (Saudi Arabia); Chu, I. C. [Data and Storage R and D Laboratory, Seocho R and D Campus, LG Electronics, Seoul 137-130 (Korea, Republic of); Serrano-Guisan, S. [Physikalisch-Technische Bundesanstalt, Bundesallee 100, 38116 Braunschweig (Germany)

2010-08-23T23:59:59.000Z

52

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

53

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

54

Enhanced UV and suppressed defect related emission in yttrium doped zinc oxide  

SciTech Connect (OSTI)

Yttrium doped ZnO (YZO) synthesized through conventional solid state reaction method using ZnO and Y{sub 2}O{sub 3} as starting material. The formation of YZO compounds were confirmed by X-ray diffraction and Raman spectroscopy. Photoluminescence measurements revealed an enhanced ultra-violet (UV) and suppressed defect related emission in YZO which is due to reduction in the concentration of the defects related to oxygen interstitials (O{sub i}) and zinc vacancy (V{sub Zn}) of ZnO.

Sharma, Vikas; Vyas, Rishi; Sachdev, K. [Department of Physics, Malaviya National Institute of Technology, Jaipur - 302017 (India); Kumar, Parmod, E-mail: parmodphysics@gmail.com; Malik, Hitendra K. [Department of Physics, Indian Institute of Technology Delhi, New Delhi - 110016 (India); Rana, Geeta [Department of Physics, G. B. Pant University of Agriculture and Technology, Pantnagar - 263145 (India); Asokan, K. [Material Science Division, Inter University Accelerator Centre, New Delhi - 110067 (India)

2014-04-24T23:59:59.000Z

55

amorphous indium-gallium-zinc oxide: Topics by E-print Network  

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

Summary: alloy of composition correspond- ing to the metallic components of the superconduct- ing oxides respectivement. Abstract. - Previous quenching experiments on 2212...

56

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

57

Zinc Thiolate Reactivity toward Nitrogen Oxides: Insights into the Interaction of Zn[superscript 2+] with S-Nitrosothiols and Implications for Nitric Oxide Synthase  

E-Print Network [OSTI]

Zinc thiolate complexes containing N[subscript 2]S tridentate ligands were prepared to investigate their reactivity toward reactive nitrogen species, chemistry proposed to occur at the zinc tetracysteine thiolate site of ...

Kozhukh, Julia

58

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

59

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

60

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

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

Method of removing hydrogen sulfide from gases utilizing a zinc oxide sorbent and regenerating the sorbent  

DOE Patents [OSTI]

A spent solid sorbent resulting from the removal of hydrogen sulfide from a fuel gas flow is regenerated with a steam-air mixture. The mixture of steam and air may also include additional nitrogen or carbon dioxide. The gas mixture contacts the spent sorbent containing metal sulfide at a temperature above 500.degree. C. to regenerate the sulfide to metal oxide or carbonate. Various metal species including the period four transition metals and the lanthanides are suitable sorbents that may be regenerated by this method. In addition, the introduction of carbon dioxide gas permits carbonates such as those of strontium, barium and calcium to be regenerated. The steam permits regeneration of spent sorbent without formation of metal sulfate. Moreover, the regeneration will proceed with low oxygen concentrations and will occur without the increase in temperature to minimize the risk of sintering and densification of the sorbent.

Jalan, Vinod M. (Concord, MA); Frost, David G. (Maynard, MA)

1984-01-01T23:59:59.000Z

62

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

63

Vaporization of zinc from scrap  

SciTech Connect (OSTI)

The rate of zinc vaporization from galvanized scrap was measured using a thermogravimetric apparatus along with chemical analysis. It is found that the rate of zinc vaporization is very fast in nitrogen and carbon monoxide atmospheres at temperatures higher than 950 C. At lower temperature rate decreases with decreasing temperature and is controlled by the gas phase mass transport. The simultaneous oxidation and vaporization of zinc occurs when the samples were heated in carbon dioxide and air. The current experimental results indicate that almost all of the zinc from scrap vaporizes during the heating process in a very short period of time after the temperature reaches above 850 C.

Ozturk, B.; Fruehan, R.J. [Carnegie Mellon Univ., Pittsburgh, PA (United States)

1996-12-31T23:59:59.000Z

64

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

65

X-ray absorption spectroscopy elucidates the impact of structural disorder on electron mobility in amorphous zinc-tin-oxide thin films  

SciTech Connect (OSTI)

We investigate the correlation between the atomic structures of amorphous zinc-tin-oxide (a-ZTO) thin films grown by atomic layer deposition (ALD) and their electronic transport properties. We perform synchrotron-based X-ray absorption spectroscopy at the K-edges of Zn and Sn with varying [Zn]/[Sn] compositions in a-ZTO thin films. In extended X-ray absorption fine structure (EXAFS) measurements, signal attenuation from higher-order shells confirms the amorphous structure of a-ZTO thin films. Both quantitative EXAFS modeling and X-ray absorption near edge spectroscopy (XANES) reveal that structural disorder around Zn atoms increases with increasing [Sn]. Field- and Hall-effect mobilities are observed to decrease with increasing structural disorder around Zn atoms, suggesting that the degradation in electron mobility may be correlated with structural changes.

Siah, Sin Cheng, E-mail: siahsincheng@gmail.com, E-mail: buonassisi@mit.edu; Lee, Yun Seog; Buonassisi, Tonio, E-mail: siahsincheng@gmail.com, E-mail: buonassisi@mit.edu [Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States); Lee, Sang Woon; Gordon, Roy G. [Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138 (United States); Heo, Jaeyeong [Department of Materials Science and Engineering, Chonnam National University, Gwangju 500-757 (Korea, Republic of); Shibata, Tomohiro; Segre, Carlo U. [Physics Department and CSRRI, Illinois Institute of Technology, Chicago, Illinois 606016 (United States)

2014-06-16T23:59:59.000Z

66

Influence of growth temperature on electrical, optical, and plasmonic properties of aluminum:zinc oxide films grown by radio frequency magnetron sputtering  

SciTech Connect (OSTI)

We have investigated the responsible mechanism for the observation of metallic conductivity at room temperature and metal-semiconductor transition (MST) at lower temperatures for aluminum-doped zinc oxide (AZO) films. AZO films were grown on glass substrates by radio-frequency magnetron sputtering with varying substrate temperatures (T{sub s}). The films were found to be crystalline with the electrical resistivity close to 1.1 × 10{sup ?3} ? cm and transmittance more than 85% in the visible region. The saturated optical band gap of 3.76 eV was observed for the sample grown at T{sub s} of 400 °C, however, a slight decrease in the bandgap was noticed above 400 °C, which can be explained by Burstein–Moss effect. Temperature dependent resistivity measurements of these highly conducting and transparent films showed a MST at ?110 K. The observed metal-like and metal-semiconductor transitions are explained by taking into account the Mott phase transition and localization effects due to defects. All AZO films demonstrate crossover in permittivity from positive to negative and low loss in the near-infrared region, illustrating its applications for plasmonic metamaterials, including waveguides for near infrared telecommunication region. Based on the results presented in this study, the low electrical resistivity and high optical transmittance of AZO films suggested a possibility for the application in the flexible electronic devices, such as transparent conducting oxide film on LEDs, solar cells, and touch panels.

Dondapati, Hareesh; Santiago, Kevin; Pradhan, A. K. [Center for Materials Research, Norfolk State University, 700 Park Avenue, Norfolk, Virginia 23504 (United States)] [Center for Materials Research, Norfolk State University, 700 Park Avenue, Norfolk, Virginia 23504 (United States)

2013-10-14T23:59:59.000Z

67

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

68

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

69

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

70

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

71

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

72

Zinc electrode and rechargeable zinc-air battery  

DOE Patents [OSTI]

An improved zinc electrode is disclosed for a rechargeable zinc-air battery comprising an outer frame and a porous foam electrode support within the frame which is treated prior to the deposition of zinc thereon to inhibit the formation of zinc dendrites on the external surface thereof. The outer frame is provided with passageways for circulating an alkaline electrolyte through the treated zinc-coated porous foam. A novel rechargeable zinc-air battery system is also disclosed which utilizes the improved zinc electrode and further includes an alkaline electrolyte within said battery circulating through the passageways in the zinc electrode and an external electrolyte circulation means which has an electrolyte reservoir external to the battery case including filter means to filter solids out of the electrolyte as it circulates to the external reservoir and pump means for recirculating electrolyte from the external reservoir to the zinc electrode.

Ross, Jr., Philip N. (Kensington, CA)

1989-01-01T23:59:59.000Z

73

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

74

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

75

Solution grown antimony doped zinc oxide films  

E-Print Network [OSTI]

D,; Nanowire dye-sensitized solar cells, Nat. Mater. 2005,three-dimensional dye-sensitized solar cells, Angew. Chem.photoelectrode in dye- sensitized solar cells, Cryst. Growth

Riley, Conor T.

2012-01-01T23:59:59.000Z

76

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

77

Durable zinc ferrite sorbent pellets for hot coal gas desulfurization  

DOE Patents [OSTI]

Durable, porous sulfur sorbents useful in removing hydrogen sulfide from hot coal gas are prepared by water pelletizing a mixture of fine zinc oxide and fine iron oxide with inorganic and organic binders and small amounts of activators such as sodium carbonate and molybdenite; the pellets are dried and then indurated at a high temperature, e.g., 1800.degree. C., for a time sufficient to produce crush-resistant pellets.

Jha, Mahesh C. (Arvada, CO); Blandon, Antonio E. (Thornton, CO); Hepworth, Malcolm T. (Edina, MN)

1988-01-01T23:59:59.000Z

78

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

79

EURODISPLAY 2002 631 P-64: A Comparative Study of Metal Oxide Coated Indium-tin Oxide Anodes  

E-Print Network [OSTI]

EURODISPLAY 2002 631 P-64: A Comparative Study of Metal Oxide Coated Indium-tin Oxide Anodes and Technology Clear Water Bay, Kowloon, Hong Kong Abstract Indium-tin oxide anodes capped with certain oxides-emitting diodes (OLEDs). The oxides of tin, zinc, praseodymium, yttrium, gallium, terbium and titanium have been

80

Galvanostatic polarization of zinc microanodes in KOH electrolytes  

SciTech Connect (OSTI)

This report includes a critical review of the current literature on the anodic passivation of zinc electrodes, a description of supplementary experimental studies to extend the data to a low-current-density region and to provide a basis for evaluating conflicting results of published work, and a new interpretation of the anodic passivation mechanism. This work provides a starting point for understanding passivation phenomena in battery electrodes. The utilization of a zinc electrode in alkaline batteries depends on the ability of the electrode to remain active during the anodic dissolution process. This dissolution period is often terminated by the onset of passivation. Experiments were conducted on the effects of current density on passivation time of a small zinc anode (6.6 x 10/sup -3/ cm/sup 2/) in KOH at concentrations of 0.784, 2.92, 4.98 and 7.24M KOH as well as 7.24M KOH saturated with zinc oxide. It was concluded that there are two mechanisms for anodic passivation, one occurring at current densities below about 150 mA/cm/sup 2/ and another at higher current densities. Accordingly, in the overall mechanism, the total time to passivation includes the times to achieve the maximum zincate concentration as well as to form porous type I ZnO and compact type II ZnO. In Ni/Zn batteries under development for vehicle propulsion, the electrolyte is usually 30% KOH (7M) saturated with zinc oxide; and the zinc electrode is formed in-situ by electrodeposition of zinc onto the grid. For a current density of 20 mA/cm/sup 2/ in a Ni/Zn battery cycled at a 2-h rate and a zinc electrode with a porosity of 0.6 at the fully charged state, a current density of 338 mA/cm/sup 2/ was calculated to be that above which the passivation limits the utilization of the zinc electrode. 7 figures, 4 tables.

Liu, M.B.; Cook, G.M.; Yao, N.P.

1980-05-01T23:59:59.000Z

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.


81

E-Print Network 3.0 - antimony-doped tin oxide Sample Search...  

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

Summary: the physical and mechanical properties of silver and antimony doped PbTe thermoelectric materials Implications... catalyst based on palladium on zinc oxide...

82

Zinc recovery by ultrasound acid leaching of double kiln treated electric arc furnace dust  

SciTech Connect (OSTI)

The need to convert 70,000 tons a year of electric arc furnace (EAF) dust into an environmentally safe or recyclable product has encouraged studies to reclaim zinc from this waste material. Successful characterization of a double-kiln calcine, produced from EAF dust, has shown that the calcine pellets consisted mainly of zinc oxide plates with some iron oxide particles. Preliminary leaching tests using hydrochloric and sulfuric acids indicated that this calcine is suitable for selective ultrasound leaching of zinc. A factorially designed screening test using hydrochloric acid showed that ultrasound significantly lowered iron dissolution and increased zinc dissolution, thus enhancing the selective leaching of zinc. Ultrasound, temperature, air bubbling rate and acidity increased the sulfuric acid selectivity, while fluorosilicic acid was not selective. Reactor characterization through ultrasonic field measurements led to the selection of reactor and ultrasound bath, which were utilized to enhance the selectivity of a laboratory scale sulfuric acid leaching of a double-kiln treated electric arc furnace dust. Results indicated that ultrasonic leaching of this calcine is a satisfactory technique to selectively separate zinc from iron. After further iron removal by precipitation and cementation of nickel, it was possible to electrowin zinc from the leach liquor under common industrial conditions, with current efficiencies from 86% through 92% being observed. Calcine washing showed that a substantial chloride removal is possible, but fluoride ion in the electrolyte caused deposit sticking during electrowinning.

Barrera Godinez, J.A.

1989-01-01T23:59:59.000Z

83

EFFECT OF THERMAL PROCESSES ON COPPER-TIN ALLOYS FOR ZINC GETTERING  

SciTech Connect (OSTI)

A contamination mitigation plan was initiated to address the discovery of radioactive zinc‐65 in a glovebox. A near term solution was developed, installation of heated filters in the glovebox piping. This solution is effective at retaining the zinc in the currently contaminated area, but the gamma emitting contaminant is still present in a system designed for tritium beta. A project was initiated to develop a solution to contain the {sup 65}Zn in the furnace module. Copper and bronze (a Cu/Sn alloy) were found to be candidate materials to combine with zinc‐65 vapor, using thermodynamic calculations. A series of binary Cu/Sn alloys were developed (after determining that commercial alloys were unacceptable), that were found to be effective traps of zinc vapor. The task described in this report was undertaken to determine if the bronze substrates would retain their zinc gettering capability after being exposed to simulated extraction conditions with oxidizing and reducing gases. Pure copper and three bronze alloys were prepared, exposed to varying oxidation conditions from 250 to 450{degree}C, then exposed to varying reduction conditions in He-H{sub 2} from 250-450{degree}C, and finally exposed to zinc vapor at 350{degree}C for four hours. The samples were characterized using scanning electron microscopy, X-ray diffraction, differential thermal analysis, mass change, and visual observation. It was observed that the as fabricated samples and the reduced samples all retained their zinc gettering capacity while samples in the "as-oxidized" condition exhibited losses in zinc gettering capacity. Over the range of conditions tested, i.e., composition, oxidation temperature, and reduction temperature, no particular sample composition appeared better. Samples reduced at 350{degree}C exhibited the greatest zinc capacity, although there were some testing anomalies associated with these samples. This work clearly demonstrated that the zinc gettering was not adversely affected by exposure to simulated process conditions and a full scale lithium and zinc trap should be fabricated for testing in the Tritium Extraction Facility.

Korinko, P.; Golyski, M.

2013-11-01T23:59:59.000Z

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

Volatile organometallic complexes suitable for use in chemical vapor depositions on metal oxide films  

DOE Patents [OSTI]

Novel ligated compounds of tin, titanium, and zinc are useful as metal oxide CVD precursor compounds without the detriments of extreme reactivity yet maintaining the ability to produce high quality metal oxide coating by contact with heated substrates.

Giolando, Dean M.

2003-09-30T23:59:59.000Z

86

LOW TEMPERATURE VOC COMBUSTION OVER MANGANESE, COBALT AND ZINC ALPO4 MOLECULAR SIEVES  

SciTech Connect (OSTI)

The objective of this project was to prepare microporous aluminophosphates containing magnesium, manganese, cobalt and zinc (MeAPOs) and to evaluate their performance as oxidation catalysts for the removal of low levels of volatile organic compounds (VOCs) from gas streams. The tasks to be accomplished were as follows: (1) To develop reliable synthesis methods for metal aluminophosphates containing manganese, cobalt and zinc in their framework; (2) To characterize these materials for crystallinity, phase purity, the location and nature of the incorporated metal in the framework; and (3) To evaluate the materials for their catalytic activities in the oxidation of volatile organic environmental pollutants.

Rosemarie Szostak

2003-03-06T23:59:59.000Z

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

analog induces oxidative: Topics by E-print Network  

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

of the two N-terminal CXXC motifs. The zinc center of Trx2 Bardwell, James 40 Acrolein induces oxidative stress in brain mitochondria Jian Luo, Riyi Shi* Engineering...

90

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

91

Electrical transport behavior of nonstoichiometric magnesium-zinc ferrite  

SciTech Connect (OSTI)

This paper presents the direct current conductivity, alternate current conductivity and dielectric properties of nonstoichiometric magnesium-zinc ferrite below room temperature. The frequency exponent (s) of conductivity shows an anomalous temperature dependency. The magnitude of the temperature exponent (n) of dielectric permittivity strongly depends on frequency and its value decreases with increasing frequency. The grain boundary contribution is dominating over the grain contribution in conduction process and the temperature dependence of resistance due to grain and grain boundary contribution exhibits two activation regions. The ferrite shows positive alternating current magnetoconductivity. The solid state processing technique was used for the preparation of nanocrystalline ferrite powder from oxides of magnesium, zinc and iron. The X-ray diffraction methods were used in determining the structure and composition of obtained ferrite, while multimeter, impedance analyzer, liquid nitrogen cryostat and electromagnet were used in the study of conducting and dielectric properties of ferrite.

Ghatak, S. [Department of Physics, National Institute of Technology, Deemed University, Mahatma Gandhi Avenue, Durgapur 713209, West Bengal (India)] [Department of Physics, National Institute of Technology, Deemed University, Mahatma Gandhi Avenue, Durgapur 713209, West Bengal (India); Sinha, M. [Department of Physics, University of Burdwan, Golapbag, Burdwan 713104, West Bengal (India)] [Department of Physics, University of Burdwan, Golapbag, Burdwan 713104, West Bengal (India); Meikap, A.K., E-mail: meikapnitd@yahoo.com [Department of Physics, National Institute of Technology, Deemed University, Mahatma Gandhi Avenue, Durgapur 713209, West Bengal (India); Pradhan, S.K. [Department of Physics, University of Burdwan, Golapbag, Burdwan 713104, West Bengal (India)] [Department of Physics, University of Burdwan, Golapbag, Burdwan 713104, West Bengal (India)

2010-08-15T23:59:59.000Z

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

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

95

Summary and assessment of METC zinc ferrite hot coal gas desulfurization test program, final report: Volume 1  

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. Optimum operating parameters for zinc ferrite such as temperatures, gas compositions, and space velocities are discussed. From the test results, salient features of zinc ferrite were derived and discussed in regard to system implications, issues raised, and technical requirements. 47 refs., 53 figs., 41 tabs.

Underkoffler, V.S.

1986-12-01T23:59:59.000Z

96

The marine biogeochemistry of zinc isotopes  

E-Print Network [OSTI]

Zinc (Zn) stable isotopes can record information about important oceanographic processes. This thesis presents data on Zn isotopes in anthropogenic materials, hydrothermal fluids and minerals, cultured marine phytoplankton, ...

John, Seth G

2007-01-01T23:59:59.000Z

97

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

98

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

99

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

100

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

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

Zinc abundances of planetary nebulae  

E-Print Network [OSTI]

Zinc is a useful surrogate element for measuring Fe/H as, unlike iron, it is not depleted in the gas phase media. Zn/H and O/Zn ratios have been derived using the [Zn IV] emission line at 3.625um for a sample of nine Galactic planetary nebulae, seven of which are based upon new observations using the VLT. Based on photoionization models, O/O++ is the most reliable ionisation correction factor for zinc that can readily be determined from optical emission lines, with an estimated accuracy of 10% or better for all targets in our sample. The majority of the sample is found to be sub-solar in [Zn/H]. [O/Zn] in half of the sample is found to be consistent with Solar within uncertainties, whereas the remaining half are enhanced in [O/Zn]. [Zn/H] and [O/Zn] as functions of Galactocentric distance have been investigated and there is little evidence to support a trend in either case.

Smith, Christina L; Dinerstein, Harriet L

2014-01-01T23:59:59.000Z

102

EAF dust as an electrolytic zinc resource  

SciTech Connect (OSTI)

Two viable options are presently available to the electrolytic zinc producer to supplement the zinc production capability significantly by using electric arc furnace dust (EAFD) or leady ZnO products derived from EAFD: Integrated processing of the materials using the Modified Zincex Process and commingling the zinc sulfate solution from that process with the neutral solution from the calcine leaching circuit; Installing a completely separate circuit for treating the material using technologies such as the Modified Zincex or Esinex Processes. EAFD and halogen-bearing EAFD derived products are a zinc resource which is virtually untapped by new or existing electrolytic zinc producers and which offers them, with the advent of new technologies able to deal with halides, the opportunity to maintain or increase their zinc production from a relatively cheap, if not ``free``, and already mined zinc source. Such an approach would also provide the EAFD producer an alternative, perhaps lower cost, outlet for their material to the currently rather closely held EAFD processing industry.

Zunkel, A.D. [A.D. Zunkel Consultants Inc., Vancouver, WA (United States)

1995-12-31T23:59:59.000Z

103

ZINC MITIGATION INTERIM REPORT - THERMODYNAMIC STUDY  

SciTech Connect (OSTI)

An experimental program was initiated in order to develop and validate conditions that will effectively trap Zn vapors that are released during extraction. The proposed work is broken down into three tasks. The first task is to determine the effectiveness of various pore sizes of filter elements. The second task is to determine the effect of filter temperature on zinc vapor deposition. The final task is to determine whether the zinc vapors can be chemically bound. The approach for chemically binding the zinc vapors has two subtasks, the first is a review of literature and thermodynamic calculations and the second is an experimental approach using the best candidates. This report details the results of the thermodynamic calculations to determine feasibility of chemically binding the zinc vapors within the furnace module, specifically the lithium trap (1). A review of phase diagrams, literature, and thermodynamic calculations was conducted to determine if there are suitable materials to capture zinc vapor within the lithium trap of the extraction basket. While numerous elements exist that form compounds with zinc, many of these also form compounds with hydrogen or the water that is present in the TPBARs. This relatively comprehensive review of available data indicates that elemental cobalt and copper and molybdenum trioxide (MoO3) may have the requisite properties to capture zinc and yet not be adversely affected by the extraction gases and should be considered for testing.

Korinko, P.

2010-12-17T23:59:59.000Z

104

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

105

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

106

alumina zinc oxide: Topics by E-print Network  

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

Donald L. 420 Chemical Preparation of the Binary Compounds in the CalciaAlumina System by Self-Propagating Combustion Synthesis Materials Science Websites Summary: Chemical...

107

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

108

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

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

shifts, as opposed to charge injection into the dielectric or trapping due to oxygen vacancies. Citation: Rajachidambaram MS, A Pandey, S Vilayur Ganapathy, P Nachimuthu, S...

109

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

110

Durable Zinc Oxide-Based Regenerable Sorbents for Desulfurization  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation Proposed Newcatalyst phasesDataTranslocationDiurnalCommitteeDurable Fuel CellDurable

111

Characterization of Amorphous Zinc Tin Oxide Semiconductors. | EMSL  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation Proposed New Substation SitesStanding FriedelIron-Sulfur3-1 November8-1DerivedfromCu,Region

112

Aluminum-doped Zinc Oxide Nanoink - Energy Innovation Portal  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth (AOD)ProductssondeadjustsondeadjustAbout theOFFICE OFFuelsPropane TankWashingtonAlternativeSolar Photovoltaic

113

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...

114

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

115

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

116

(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]

accounted for 86% of total U.S. production. Two primary and 12 large- and medium-sized secondary smelters Production: Mine, zinc in ore1 842 780 768 739 760 Primary slab zinc 203 182 187 189 250 Secondary slab zinc a major price recovery that started in the third quarter of 2004 and picked up renewed momentum

117

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

118

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

119

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

120

Draft Inventory Upper Snake Province  

E-Print Network [OSTI]

Draft Inventory Upper Snake Province Submitted To The Northwest Power and Conservation Council Portland, Oregon Prepared by December 2004 #12;BOI043620012.DOC/KG ii Contents Section Page Inventory

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

Dispenser Printed Zinc Microbattery with an Ionic Liquid Gel Electrolyte  

E-Print Network [OSTI]

and zinc foil electrode. The EIS scans were recorded at theand zinc foil electrode. The EIS scans were recorded at the159 9.3.1 EIS Equivalent Electrical Circuit

Ho, Christine Chihfan

2010-01-01T23:59:59.000Z

122

Acid treatment removes zinc sulfide scale restriction  

SciTech Connect (OSTI)

This paper reports that removal of zinc sulfide (ZnS) scale with acid restored an offshore Louisiana well's production to original rates. The zinc sulfide scale was determined to be in the near well bore area. The selected acid had been proven to control iron sulfide (FeS) scales in sour wells without causing harm to surface production equipment, tubing, and other downhole hardware. The successful removal of the blockage re-established previous production rates with a 105% increase in flowing tubing pressure. On production for a number of months, a high rate, high-pressure offshore well was experiencing unusually rapid pressure and rate declines. A small sample of the restrictive material was obtained during the wire line operations. The well was subsequently shut in while a laboratory analysis determined that zinc sulfide was the major component of the obstruction.

Biggs, K. (Kerr McGee Corp., Lafayette, LA (US)); Allison, D. (Otis Engineering Corp., Lafayette, LA (US)); Ford, W.G.F. (Halliburton Co., Duncan, OK (United States))

1992-08-31T23:59:59.000Z

123

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

124

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

125

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

126

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

127

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

128

Reduction of spalling in mixed metal oxide desulfurization sorbents by addition of a large promoter metal oxide  

DOE Patents [OSTI]

Mixed metal oxide pellets for removing hydrogen sulfide from fuel gas mixes derived from coal are stabilized for operation over repeated cycles of desulfurization and regeneration reactions by addition of a large promoter metal oxide such as lanthanum trioxide. The pellets, which may be principally made up of a mixed metal oxide such as zinc titanate, exhibit physical stability and lack of spalling or decrepitation over repeated cycles without loss of reactivity. The lanthanum oxide is mixed with pellet-forming components in an amount of 1 to 10 weight percent.

Poston, James A. (Star City, WV)

1997-01-01T23:59:59.000Z

129

(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]

%. Three primary and eight secondary smelters refined zinc metal of commercial grade in 1999. Of zinc metal,500 Smelter primary, numbere 1,000 1,000 1,000 1,000 1,000 Net import reliance3 as a percent of apparent. The planned tripling of refinery capacity at the Clarksville, TN, smelter was suspended by Pasminco Ltd

130

Occupational hypersensitivity pneumonitis in a smelter exposed to zinc fumes  

SciTech Connect (OSTI)

A smelter exposed to zinc fumes reported severe recurrent episodes of cough, dyspnea and fever. Bronchoalveolar lavage showed a marked increase in lymphocytes count with predominance of CD8 T-lymphocytes. Presence of zinc in alveolar macrophages was assessed by analytic transmission electron microscopy. This is the first case of recurrent bronchoalveolitis related to zinc exposure in which the clinical picture and BAL results indicate a probable hypersensitivity pneumonitis.

Ameille, J.; Brechot, J.M.; Brochard, P.; Capron, F.; Dore, M.F. (Consultation de Pathologie Professionnelle, Hopital Raymond Poincare, Garches, (France))

1992-03-01T23:59:59.000Z

131

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

132

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

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

at the Camden Resource Recovery Facility) Summary: % .629 Cylinder 40% 14.26 Zinc-Air Batteries Zinc-air batteries are beginning to replace mercury-zinc... button batteries...

133

Flexographically Printed Rechargeable Zinc-based Battery for Grid Energy Storage  

E-Print Network [OSTI]

and rechargeable zinc-air battery,” U.S. Patent S. Müller,for the rechargeable zinc–air battery,” J Appl Electrochem,zinc-air. The four main types of commercially available rechargeable battery

Wang, Zuoqian

2013-01-01T23:59:59.000Z

134

A NEW CONCEPT IN AN ELECTRICALLY RECHARGEABLE ZINC-AIR ALKALINE BATTERY  

E-Print Network [OSTI]

Study of a New Zinc-Air Battery Concept Using Flowingdiagram of the zinc-air battery single cell prototype usedRECHARGEABLE ZINC-AIR ALKALINE BATTERY Philip N. Ross

Ross, P.N.

2010-01-01T23:59:59.000Z

135

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

136

EMSL - oxides  

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

oxides en Influence of Adsorption Site and Wavelength on the Photodesorption of NO from the (Fe,Cr)3O4(111) Mixed Oxide Surface. http:www.emsl.pnl.govemslwebpublications...

137

Upper Great Plains Home page  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary)morphinanInformation Desert Southwest RegionatSearchScheduledProductionCCEIResearch Upper Great Plains Service

138

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

1970-01-01T23:59:59.000Z

139

Methane oxidation over dual redox catalysts  

SciTech Connect (OSTI)

Catalytic oxidation of methane to partial oxidation products, primarily formaldehyde and C[sub 2] hydrocarbons, was found to be directed by the catalyst used. In this project, it was discovered that a moderate oxidative coupling catalyst for C[sub 2] hydrocarbons, zinc oxide, is modified by addition of small amounts of Cu and Fe dopants to yield fair yields of formaldehyde. A similar effect was observed with Cu/Sn/ZnO catalysts, and the presence of a redox Lewis acid, Fe[sup III] or Sn[sup IV], was found to be essential for the selectivity switch from C[sub 2] coupling products to formaldehyde. The principle of double doping with an oxygen activator (Cu) and the redox Lewis acid (Fe, Sn) was pursued further by synthesizing and testing the CuFe-ZSM-5 zeolite catalyst. The Cu[sup II](ion exchanged) Fe[sup III](framework)-ZSM-5 also displayed activity for formaldehyde synthesis, with space time yields exceeding 100 g/h-kg catalyst. However, the selectivity was low and earlier claims in the literature of selective oxidation of methane to methanol over CuFe-ZSM-5 were not reproduced. A new active and selective catalytic system (M=Sb,Bi,Sn)/SrO/La[sub 2]O[sub 3] has been discovered for potentially commercially attractive process for the conversion of methane to C[sub 2] hydrocarbons, (ii) a new principle has been demonstrated for selectivity switching from C[sub 2] hydrocarbon products to formaldehyde in methane oxidations over Cu,Fe-doped zinc oxide and ZSM-5, and (iii) a new approach has been initiated for using ultrafine metal dispersions for low temperature activation of methane for selective conversions. Item (iii) continues being supported by AMOCO while further developments related to items (i) and (ii) are the objective of our continued effort under the METC-AMOCO proposed joint program.

Klier, K.; Herman, R.G.; Sojka, Z.; DiCosimo, J.I.; DeTavernier, S.

1992-06-01T23:59:59.000Z

140

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

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

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

142

Extracellular Proteins Promote Zinc Sulfide Aggregation  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-Series toESnet4:Epitaxial Thin FilmEquipmentExtracellular Proteins Promote Zinc

143

Zinc Matrix Power Inc | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 NoPublic Utilities Address: 160 East 300 South Place:ReferenceEditWisconsin:YBR SolarZe-gen JumpZinc Matrix Power Inc

144

EFFECTIVENESS OF COPPER AND BRONZE FOR ZINC CAPTURE  

SciTech Connect (OSTI)

A series of experiments was conducted to determine the efficacy of using copper and bronze sheet and screen under high vacuum conditions to capture zinc vapor. The experiments were conducted in a parametric manner using a fixed zinc vaporization temperature (350°C) but varying the filter temperature from ambient to 550°C. Consistent with previous work, metallic zinc was deposited at low temperatures, but the deposit was non?adherent. At an intermediate temperature range (350?450°C), the deposit formed an alloy with both copper and bronze materials. At higher temperatures (> 500°C) the zinc did not deposit on the surfaces likely due to its high vapor pressure. Additional testing to optimize the zinc 'getter' chemistry and surface condition is warranted.

Korinko, P. S.

2012-11-02T23:59:59.000Z

145

High upper critical field in disordered niobium nitride superconductor  

SciTech Connect (OSTI)

Superconducting Niobium Nitride thin films have been deposited on glass, aluminum nitride buffered glass, and oxidized silicon substrates by reactive DC magnetron sputtering at ambient substrate temperatures. The crystal structure of these thin films has been determined to be cubic fcc B1 structure by Glancing Incidence X-Ray Diffraction analysis. The superconducting transition temperatures of the thin films were measured to be greater than 11.6?K with a maximum of 13.4?K. The negative temperature coefficient of resistance observed in these thin films indicates the presence of disorder. Magneto-resistance measurements have been carried out on these thin films patterned into standard four probe geometry upto a maximum magnetic field of 12?T for two films and upto 15?T for the other two films. The dependence of transition temperature on the applied field is analyzed to estimate the upper critical field. The upper critical field for most of the films was estimated to exceed 35?T, while one of the most disordered films had an estimated upper critical field greater than 70?T.

Baskaran, R., E-mail: baskaran@igcar.gov.in; Thanikai Arasu, A. V.; Amaladass, E. P.; Janawadkar, M. P. [Materials Science Group, IGCAR, Kalpakkam-603102 (India)

2014-10-28T23:59:59.000Z

146

2-64 GEOLOGICAL & ENVIRONMENTAL SCIENCES Chemical Forms of Zinc in a Smelter-  

E-Print Network [OSTI]

2-64 GEOLOGICAL & ENVIRONMENTAL SCIENCES Chemical Forms of Zinc in a Smelter- Contaminated Soil A to investigate the chemical forms of zinc in a strongly acidic soil near the historic zinc smelter at Palmerton the soil pH to neutral values. Consequently, the bare soils in the vicinity of a zinc smelter in France

Sparks, Donald L.

147

Upper Cumberland EMC- Energy Efficiency Rebate Programs  

Broader source: Energy.gov [DOE]

Upper Cumberland Electric Membership Corporation (UCEMC), in collaboration with the Tennessee Valley Authority, offers incentives for its customers to purchase and install energy efficient...

148

Preparation of anionic clay-birnessite manganese oxide composites by interlayer oxidation of oxalate ions by permanganate  

SciTech Connect (OSTI)

Oxalate intercalated anionic clay-like nickel zinc hydroxysalt was obtained starting from nickel zinc hydroxyacetate, Ni{sub 3}Zn{sub 2}(OH){sub 8}(OAc){sub 2}{center_dot}2H{sub 2}O, by anion exchange. The intercalated oxalate species was reacted with potassium permanganate in such a way that the layered manganese oxide formed was within the interlayer region of the anionic clay resulting in a layered composite in which the negative charges on the birnessite type manganese oxide layers compensate the positive charges on the anionic clay layers. Birnessite to anionic clay ratio could be varied by varying the reaction time or the amount of potassium permanganate used. - Graphical abstract: Nickel zinc hydroxyoxalate was reacted with potassium permanganate to get nickel zinc hydroxide birnessite composites in which the positive charges on the hydroxide layers are neutralized by the negative charges on birnessite layers. Highlights: Black-Right-Pointing-Pointer Anionic and cationic layered solid composites prepared. Black-Right-Pointing-Pointer Ni-Zn hydroxyoxalate reacted with KMnO{sub 4} to deposit MnO{sub 2} in the interlayer. Black-Right-Pointing-Pointer Birnessite layers coexist with anionic clay layers in the composites. Black-Right-Pointing-Pointer Birnessite/anionic clay ratio controlled by amount of KMnO{sub 4} used and reaction time.

Arulraj, James [Materials Research Group, Department of Chemistry, St. Joseph's College, 36 Langford Road, Bangalore 560 027 (India)] [Materials Research Group, Department of Chemistry, St. Joseph's College, 36 Langford Road, Bangalore 560 027 (India); Rajamathi, Michael, E-mail: mikerajamathi@rediffmail.com [Materials Research Group, Department of Chemistry, St. Joseph's College, 36 Langford Road, Bangalore 560 027 (India)] [Materials Research Group, Department of Chemistry, St. Joseph's College, 36 Langford Road, Bangalore 560 027 (India)

2013-02-15T23:59:59.000Z

149

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

150

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

151

Solder for oxide layer-building metals and alloys  

DOE Patents [OSTI]

A low temperature solder and method for soldering an oxide layer-building metal such as aluminum, titanium, tantalum or stainless steel. The comosition comprises tin and zinc; germanium as a wetting agent; preferably small amounts of copper and antimony; and a grit, such as silicon carbide. The grit abrades any oxide layer formed on the surface of the metal as the germanium penetrates beneath and loosens the oxide layer to provide good metal-to-metal contact. The germanium comprises less than aproximatley 10% by weight of the solder composition so that it provides sufficient wetting action but does not result in a melting temperature above approximately 300.degree. C. The method comprises the steps rubbing the solder against the metal surface so the grit in the solder abrades the surface while heating the surface until the solder begins to melt and the germanium penetrates the oxide layer, then brushing aside any oxide layer loosened by the solder.

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

1992-01-01T23:59:59.000Z

152

Solder for oxide layer-building metals and alloys  

DOE Patents [OSTI]

A low temperature solder and method for soldering an oxide layer-building metal such as aluminum, titanium, tantalum or stainless steel is disclosed. The composition comprises tin and zinc; germanium as a wetting agent; preferably small amounts of copper and antimony; and a grit, such as silicon carbide. The grit abrades any oxide layer formed on the surface of the metal as the germanium penetrates beneath and loosens the oxide layer to provide good metal-to-metal contact. The germanium comprises less than approximately 10% by weight of the solder composition so that it provides sufficient wetting action but does not result in a melting temperature above approximately 300 C. The method comprises the steps rubbing the solder against the metal surface so the grit in the solder abrades the surface while heating the surface until the solder begins to melt and the germanium penetrates the oxide layer, then brushing aside any oxide layer loosened by the solder.

Kronberg, J.W.

1992-09-15T23:59:59.000Z

153

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

154

AN INVENTORY OF PHOTOGRAPHS OF ZINC ELECTRODEPOSITED FROM ACID ELECTROLYTES  

E-Print Network [OSTI]

for publication AN INVENTORY OF PHOTOGRAPHS OF ZINCemployer. LBL-16601 AN INVENTORY OF PHOTOGRAPHS OF ZINCNo. DE-AC03-76SF00098 AN INVENTORY OF PHOTOGRAPHS OF ZINC

Faltemier, J.L.

2011-01-01T23:59:59.000Z

155

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

156

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

157

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

158

alkaline zinc electrode: Topics by E-print Network  

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

large fraction of power incident on a curved primary mirror using an on-axis secondary mirror Kik, Pieter 63 Adding Search to Zinc Reza Rafeh1 Computer Technologies and Information...

159

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

160

(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]

three-fourths of production. Three primary and 12 large- and medium-sized secondary smelters refined 92 Employment: Mine and mill, numbere 2,700 2,500 2,400 2,500 2,600 Smelter primary, numbere 1,000 1 production of zinc concentrate by about 3% in 2000. U.S. mine production greatly exceeded smelter capacity

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

(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]

-fourths of production. Three primary and 12 large- and medium-sized secondary smelters refined zinc metal of commercial,500 2,600 2,400 Smelter primary, numbere 1,000 1,000 1,000 1,000 900 Net import reliance3 greatly exceeded smelter capacity, necessitating exports of concentrate. More than one-third of all

162

Oxidation catalyst  

DOE Patents [OSTI]

The present invention generally relates to catalyst systems and methods for oxidation of carbon monoxide. The invention involves catalyst compositions which may be advantageously altered by, for example, modification of the catalyst surface to enhance catalyst performance. Catalyst systems of the present invention may be capable of performing the oxidation of carbon monoxide at relatively lower temperatures (e.g., 200 K and below) and at relatively higher reaction rates than known catalysts. Additionally, catalyst systems disclosed herein may be substantially lower in cost than current commercial catalysts. Such catalyst systems may be useful in, for example, catalytic converters, fuel cells, sensors, and the like.

Ceyer, Sylvia T. (Cambridge, MA); Lahr, David L. (Cambridge, MA)

2010-11-09T23:59:59.000Z

163

Chronic exposure of sheep to a zinc smelter in Peru  

SciTech Connect (OSTI)

Liver levels of arsenic, cadmium, copper, lead, manganese, and zinc were assessed in adult female sheep living in the vicinity of a zinc smelter in Peru. The study was conducted on a large sheep-raising cooperative divided into seven management units, operated under a standardized husbandry system. Soil samples were analyzed for the same metals at varying distances from the smelter. A gradient of concentration of heavy metals in soil was found between 1 and 56 km from the smelter. Soil concentrations for all metals except manganese decreased significantly with increasing distance from the smelter. The strongest correlations were found for copper, lead, and zinc (P less than 0.001). Topographic features and prevailing wind direction appeared to play a role in the dispersion of pollutants. Liver samples were obtained from 153 sheep on five units of the cooperative. The centers of the units sampled were between 13 and 56 km from the smelter. Hepatic concentrations of arsenic, lead, manganese, and zinc decreased significantly with increasing distance from the smelter. Liver arsenic and liver zinc were significantly related to soil concentrations. Liver levels of arsenic, cadmium, lead, and manganese in sheep from the cooperative were significantly higher than those detected in control sheep from southern Peru. Sheep populations may serve as biological monitors for heavy metal accumulation and environmental carcinogenesis.

Reif, J.S.; Ameghino, E.; Aaronson, M.J.

1989-06-01T23:59:59.000Z

164

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

165

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.

166

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

E-Print Network [OSTI]

`skeleton'. This scaffold consists of alternating copper and nickel layers supporting zinc as electrodeposited anode material. A proof-of-concept zinc-air microbattery based on this technology was developed

167

ZINC--2002 85.1 References that include a section mark () are found in the Internet  

E-Print Network [OSTI]

Conservation and Recovery Act (RCRA) that applies to recycling of hazardous secondary materials to make zinc for hazardous secondary materials that are legitimately recycled to make zinc micronutrient fertilizers

168

Possible Regulatory Role for the Histidine-Rich Loop in the Zinc...  

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

Regulatory Role for the Histidine-Rich Loop in the Zinc Transport Protein, ZnuA. Possible Regulatory Role for the Histidine-Rich Loop in the Zinc Transport Protein, ZnuA. Abstract:...

169

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...

170

Fuel additives and heat treatment effects on nanocrystalline zinc ferrite phase composition  

E-Print Network [OSTI]

Fuel additives and heat treatment effects on nanocrystalline zinc ferrite phase composition Ping Hu October 2010 Keywords: Zinc ferrite Fuel additive Heat treatment Phase composition a b s t r a c, carbamide and acrylic acid as fuel additives. Pure spinel zinc ferrite with the crystallite size of about 15

Volinsky, Alex A.

171

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.

172

Upper Snake Provincial Assessment May 2004 APPENDIX 4-1--UPPER SNAKE PROVINCE PROJECT INVENTORY  

E-Print Network [OSTI]

Upper Snake Provincial Assessment May 2004 1 APPENDIX 4-1--UPPER SNAKE PROVINCE PROJECT INVENTORY The purpose of the project inventory is to provide a generalized picture of the types of fish and wildlife team participants through the project inventory website or through direct submission. Additional

173

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

174

Secondary battery containing zinc electrode with modified separator and method  

DOE Patents [OSTI]

A battery containing a zinc electrode with a porous separator between the anode and cathode. The separator is a microporous substrate carrying therewith an organic solvent of benzene, toluene or xylene with a tertiary organic amine therein, wherein the tertiary amine has three carbon chains each containing from six to eight carbon atoms. The separator reduces the rate of zinc dentrite growth in the separator during battery operation prolonging battery life by preventing short circuits. A method of making the separator is also disclosed.

Poa, D.S.

1984-02-16T23:59:59.000Z

175

Methane oxidation over dual redox catalysts. Final report  

SciTech Connect (OSTI)

Catalytic oxidation of methane to partial oxidation products, primarily formaldehyde and C{sub 2} hydrocarbons, was found to be directed by the catalyst used. In this project, it was discovered that a moderate oxidative coupling catalyst for C{sub 2} hydrocarbons, zinc oxide, is modified by addition of small amounts of Cu and Fe dopants to yield fair yields of formaldehyde. A similar effect was observed with Cu/Sn/ZnO catalysts, and the presence of a redox Lewis acid, Fe{sup III} or Sn{sup IV}, was found to be essential for the selectivity switch from C{sub 2} coupling products to formaldehyde. The principle of double doping with an oxygen activator (Cu) and the redox Lewis acid (Fe, Sn) was pursued further by synthesizing and testing the CuFe-ZSM-5 zeolite catalyst. The Cu{sup II}(ion exchanged) Fe{sup III}(framework)-ZSM-5 also displayed activity for formaldehyde synthesis, with space time yields exceeding 100 g/h-kg catalyst. However, the selectivity was low and earlier claims in the literature of selective oxidation of methane to methanol over CuFe-ZSM-5 were not reproduced. A new active and selective catalytic system (M=Sb,Bi,Sn)/SrO/La{sub 2}O{sub 3} has been discovered for potentially commercially attractive process for the conversion of methane to C{sub 2} hydrocarbons, (ii) a new principle has been demonstrated for selectivity switching from C{sub 2} hydrocarbon products to formaldehyde in methane oxidations over Cu,Fe-doped zinc oxide and ZSM-5, and (iii) a new approach has been initiated for using ultrafine metal dispersions for low temperature activation of methane for selective conversions. Item (iii) continues being supported by AMOCO while further developments related to items (i) and (ii) are the objective of our continued effort under the METC-AMOCO proposed joint program.

Klier, K.; Herman, R.G.; Sojka, Z.; DiCosimo, J.I.; DeTavernier, S.

1992-06-01T23:59:59.000Z

176

POSTGRADUATE Upper Level, Otto Beit Building  

E-Print Network [OSTI]

FUNDING YOUR POSTGRADUATE STUDIES AT UCT Upper Level, Otto Beit Building University Avenue North, the Postgraduate Funding Office and Postgraduate Centre were established at the University of Cape Town to provide apply for funding from both the University and from as many other sources of support as possible

Jarrett, Thomas H.

177

Draft Management Plan Upper Snake Province  

E-Print Network [OSTI]

.......................................................................................4-5 Consistency with Idaho's Water Quality Management Plan...........................4-5 303(dDraft Management Plan Upper Snake Province Submitted To The Northwest Power and Conservation Quality Anti-Degradation Policy (39-3603) ............................................4-8 ESA and CWA

178

Zinc Speciation in a Smelter-Contaminated Soil Profile  

E-Print Network [OSTI]

Zinc Speciation in a Smelter-Contaminated Soil Profile Using Bulk and Microspectroscopic Techniques minerals may have been aerially deposited from the smelter operation. Microspec- troscopy detected also in increased trace metal concentrations and acidic pH values in topsoils in the vicinity of smelter facilities

Sparks, Donald L.

179

ZINC--2000 86.1 By Jozef Plachy  

E-Print Network [OSTI]

, U.S. mine production greatly exceeded smelter capacity (table 6), necessitating exports to the Trail smelter in Canada; the remaining two-thirds went mainly to Asian markets (table 14). Primary zinc metal production by the three primary smelters decreased by more than 5% in 2000 (tables 4, 6). Apparent

180

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

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.


181

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

182

Project Profile: High Performance Reduction/Oxidation Metal Oxides...  

Office of Environmental Management (EM)

High Performance ReductionOxidation Metal Oxides for Thermochemical Energy Storage Project Profile: High Performance ReductionOxidation Metal Oxides for Thermochemical Energy...

183

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

184

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

185

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

186

Anti-reflection zinc oxide nanocones for higher efficiency thin-film silicon solar cells  

E-Print Network [OSTI]

Thin film silicon solar cells, which are commonly made from microcrystalline silicon ([mu]c-Si) or amorphous silicon (a-Si), have been considered inexpensive alternatives to thick polycrystalline silicon (polysilicon) solar ...

Mailoa, Jonathan P

2012-01-01T23:59:59.000Z

187

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)

of Chemistry, Sungkyunkwan University Collection: Materials Science 42 216 Int. J. Nano and Biomaterials, Vol. 2, Nos. 12345, 2009 Copyright 2009 Inderscience...

188

Fixed bed testing of durable, steam resistant zinc oxide containing sorbents  

SciTech Connect (OSTI)

The US Department of Energy is currently developing Integrated Gasification combined Cycle (IGCC) systems for electrical power generation. It has been predicted that IGCC plants with hot gas cleanup will be superior to conventional pulverized coal-fired power plants in overall plant efficiency and environmental performance. Development of a suitable regenerable sorbent is a major barrier issue in the hot gas cleanup program for IGCC systems. This has been a challenging problem during the last 20 years, since many of the sorbents developed in the program could not retain their reactivity and physical integrity during repeated cycles of sulfidation and regeneration reactions. Two promising sorbents and (METC6), which were capable of sustaining their reactivity and physical integrity during repeated sulfidation/regeneration cycles, have been developed at the Morgantown Energy Technology Center (METC) during the past year. These sorbents were tested (sulfided) both in low-pressure (260 kPa/37.7 psia) and high-pressure (1034 kPa/150 psia) fixed-bed reactors at 538{degrees}C (1000{degrees}F) with simulated KRW coal gas. High-pressure testing was continued for 20 cycles with steam regeneration. There were no appreciable changes in sulfidation capacity of the sorbents during the 20-cycle testing. The crush strength of the sorbent actually improved after 20 cycles and there were no indications of spalling or any other physical deterioration of the sorbents. In testing to date, these sorbents exhibit better overall sulfur capture performance than the conventional sorbents.

Siriwardane, R.V.; Grimm, U.; Poston, J. [USDOE Morgantown Energy Technology Center, WV (United States); Monaco, S.J. [EG& G dTechnical Services of West Virginia, Inc., Morgantown, WV (United States)

1994-12-31T23:59:59.000Z

189

Urchin-inspired zinc oxide as building blocks for nanostructured solar cells  

E-Print Network [OSTI]

High surface area nanowire based architectures have been identified as important components for future optoelectronic nanodevices, solar cells, wettability coatings, gas sensors, and biofuel cells. Here we report on a novel urchin-inspired nanowire architecture: its interwoven three-dimensional, high-surface-area nanowire arrangement can be precisely controlled by using a low-cost and scalable synthesis based on a combination of nanosphere lithography, low-temperature atomic layer deposition, and electrodeposition. The performance of single-layer arrays of urchin-inspired ZnO nanowire building blocks competes to that of planar nanowire carpets. We illustrate this capability by fabricating fully-inorganic extremely thin absorber solar cells using CdSe as absorber and CuSCN as hole-collector material. The light diffusion of the urchin-inspired nanowire arrays was varied from 15% to 35%. Homogenous absorption in the wavelength range of 400-800 nm of up to 90% was obtained. Solar conversion efficiencies of ~ 1.33...

Elias, Jamil; Utke, Ivo; Erni, Rolf; Hosseini, Davood; Michler, Johann; Philippe, Laetitia

2012-01-01T23:59:59.000Z

190

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

191

Zinc oxide nanoparticle-polymeric thin films for dynamic strain sensing  

E-Print Network [OSTI]

onto poly(vinyl chloride) PVC Type I plates (McMaster- Carr)cm wide, and 0.3-cm thick PVC plate. It should be noted thatduring free vibration of the PVC cantilevered beam the CN-Y

Loh, Kenneth J.; Chang, Donghee

2011-01-01T23:59:59.000Z

192

Face-selective electrostatic control of hydrothermal zinc oxide nanowire synthesis  

E-Print Network [OSTI]

Rational control over the morphology and the functional properties of inorganic nanostructures has been a long-standing goal in the development of bottom-up device fabrication processes. We report that the geometry of ...

Joo, Jaebum

193

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

194

Improved Stability Of Amorphous Zinc Tin Oxide Thin Film Transistors Using  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation ProposedUsingFun withconfinementEtching.348 270 300 219 255Retrievals of Temperature

195

Upper internals arrangement for a pressurized water reactor  

DOE Patents [OSTI]

In a pressurized water reactor with all of the in-core instrumentation gaining access to the core through the reactor head, each fuel assembly in which the instrumentation is introduced is aligned with an upper internals instrumentation guide-way. In the elevations above the upper internals upper support assembly, the instrumentation is protected and aligned by upper mounted instrumentation columns that are part of the instrumentation guide-way and extend from the upper support assembly towards the reactor head in hue with a corresponding head penetration. The upper mounted instrumentation columns are supported laterally at one end by an upper guide tube and at the other end by the upper support plate.

Singleton, Norman R; Altman, David A; Yu, Ching; Rex, James A; Forsyth, David R

2013-07-09T23:59:59.000Z

196

An Integrated Geophysical Analysis Of The Upper Crust Of The...  

Open Energy Info (EERE)

Of The Upper Crust Of The Southern Kenya Rift Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: An Integrated Geophysical Analysis Of The Upper...

197

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

198

Structural and magnetic properties of chromium doped zinc ferrite  

SciTech Connect (OSTI)

Zinc chromium ferrites with chemical formula ZnCr{sub x}Fe{sub 2?x}O{sub 4} (x = 0.0, 0.2, 0.4, 0.6, 0.8, 1.0) were prepared by Sol - Gel technique. The structural as well as magnetic properties of the synthesized samples have been studied and reported here. The structural characterizations of the samples were analyzed by using X – Ray Diffraction (XRD), Fourier Transform Infrared Spectroscopy (FTIR), Scanning Electron Microscope (SEM), and Transmission Electron Microscope (TEM). The single phase spinel cubic structure of all the prepared samples was tested by XRD and FTIR. The particle size was observed to decrease from 18.636 nm to 6.125 nm by chromium doping and induced a tensile strain in all the zinc chromium mixed ferrites. The magnetic properties of few samples (x = 0.0, 0.4, 1.0) were investigated using Vibrating Sample Magnetometer (VSM)

Sebastian, Rintu Mary; Thankachan, Smitha; Xavier, Sheena; Mohammed, E. M., E-mail: emmohammed2005@gmail.com [Research Department of Physics, Maharaja's College, Ernakulam, Kerala (India); Joseph, Shaji [Department of Physic, St. Albert's College, Ernakulam, Kerala (India)

2014-01-28T23:59:59.000Z

199

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

200

Complexation effects in the electrodeposition of nickel-zinc alloys  

SciTech Connect (OSTI)

The nickel-zinc alloy electrodeposition system exhibits a phenomenon known as anomalous codeposition, where the less noble metal (Zn) deposits preferentially to the more noble metal (Ni). One explanation for this behavior is that zinc hydroxide adsorbs to the surface of the electrode and inhibits the electrodeposition of the nickel. This mechanism is being tested through the use of {open_quotes}selective{close_quotes} complexing agents for Ni{sup 2+} and Zn{sup 2+}. The complexation behavior of these ions with citrate, aspartate and pyrophosphate ions is being characterized by potentiometric titration and polarographic measurements. The effect of these complexants on the electrodeposition of the alloys is also being studied.

Melville, A.; Harris, T. [Univ. of Tulsa, OK (United States)

1995-12-01T23:59:59.000Z

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.


201

Natural Attenuation of Zinc Pollution in Smelter-Affected Soil  

E-Print Network [OSTI]

Natural Attenuation of Zinc Pollution in Smelter-Affected Soil M . V E S P A , M . L A N S O N structural character- ization of the two types of Zn-containing phyllosilicate in slightly basic smelter to the smelter and wind direction, is ferruginous with an average Fe/Al atomic ratio of 1.1 ( 0.5. The Zn2

202

Stray thermal influences in zinc fixed-point cells  

SciTech Connect (OSTI)

The influence of thermal effects is a major uncertainty contribution to the calibration of Standard Platinum Resistance Thermometers (SPRTs) in fixed-point cells. Axial heat losses strongly depend on the fixed-point temperature, constructional details of cells and SPRTs and the resulting heat transfer between cell, thermometer, furnace and environment. At the zinc point contributions by heat conduction and thermal radiation must be considered. Although the measurement of temperature gradients in the re-entrant well of a fixed-point cell provides very important information about the influence of axial heat losses, further investigations are required for a reliable estimate of the resulting uncertainty contribution. It is shown that specific modifications of a zinc fixed-point cell, following generally accepted principles, may result in systematic deviations of the measured fixed-point temperatures larger than typically stated in the uncertainty budget of National Metrology Institutes (NMIs). The underlying heat transport processes are investigated and the consequences for the construction of zinc cells are discussed.

Rudtsch, S.; Aulich, A.; Monte, C. [Physikalisch-Technische Bundesanstalt (PTB), Abbestr. 2-12, 10587 Berlin (Germany)] [Physikalisch-Technische Bundesanstalt (PTB), Abbestr. 2-12, 10587 Berlin (Germany)

2013-09-11T23:59:59.000Z

203

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

204

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...

205

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

206

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

207

Hydrocracking with molten zinc chloride catalyst containing 2-12% ferrous chloride  

DOE Patents [OSTI]

In a process for hydrocracking heavy aromatic polynuclear carbonaceous feedstocks to produce hydrocarbon fuels boiling below about 475.degree. C. by contacting the feedstocks with hydrogen in the presence of a molten zinc chloride catalyst and thereafter separating at least a major portion of the hydrocarbon fuels from the spent molten zinc chloride catalyst, an improvement comprising: adjusting the FeCl.sub.2 content of the molten zinc chloride to from about 2 to about 12 mol percent based on the mixture of ferrous chloride and molten zinc chloride.

Zielke, Clyde W. (McMurray, PA); Bagshaw, Gary H. (Library, PA)

1981-01-01T23:59:59.000Z

208

Photo-oxidation catalysts  

DOE Patents [OSTI]

Photo-oxidation catalysts and methods for cleaning a metal-based catalyst are disclosed. An exemplary catalyst system implementing a photo-oxidation catalyst may comprise a metal-based catalyst, and a photo-oxidation catalyst for cleaning the metal-based catalyst in the presence of light. The exposure to light enables the photo-oxidation catalyst to substantially oxidize absorbed contaminants and reduce accumulation of the contaminants on the metal-based catalyst. Applications are also disclosed.

Pitts, J. Roland (Lakewood, CO); Liu, Ping (Irvine, CA); Smith, R. Davis (Golden, CO)

2009-07-14T23:59:59.000Z

209

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

210

Tris(2-pyridylmethyl)amine (TPA) as a membrane-permeable chelator for interception of biological mobile zinc  

E-Print Network [OSTI]

We report the characterization of tris(2-pyridylmethyl)amine (TPA) as a membrane-permeable zinc chelator for intercepting biological mobile zinc. Compared to N,N,N?,N?-tetrakis(2-pyridylmethyl)ethylenediamine (TPEN), TPA ...

Huang, Zhen

211

Understanding nuclei in the upper sd - shell  

SciTech Connect (OSTI)

Nuclei in the upper-sd shell usually exhibit characteristics of spherical single particle excitations. In the recent years, employment of sophisticated techniques of gamma spectroscopy has led to observation of high spin states of several nuclei near A ? 40. In a few of them multiparticle, multihole rotational states coexist with states of single particle nature. We have studied a few nuclei in this mass region experimentally, using various campaigns of the Indian National Gamma Array setup. We have compared and combined our empirical observations with the large-scale shell model results to interpret the structure of these nuclei. Indication of population of states of large deformation has been found in our data. This gives us an opportunity to investigate the interplay of single particle and collective degrees of freedom in this mass region.

Sarkar, M. Saha; Bisoi, Abhijit; Ray, Sudatta [Nuclear Physics Division, Saha Institute of Nuclear Physics, Kolkata 700064 (India); Kshetri, Ritesh [Nuclear Physics Division, Saha Institute of Nuclear Physics, Kolkata 700064, India and Sidho-Kanho-Birsha University, Purulia - 723101 (India); Sarkar, S. [Indian Institute of Engineering Science and Technology, Shibpur, Howrah - 711103 (India)

2014-08-14T23:59:59.000Z

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

Oxidation of propylene over copper oxide catalysts  

E-Print Network [OSTI]

work on other phases of this project concerning cata- lytic oxidation of hydrocarbons has been described by Sanderson (59), Looney (34), Burns (11), Dunlop (17), Woodham (71), and Perkins (49). The early work of Sanderson indicated that chromia-alumina... and pro- moted chromia?alumina agents possessed the ability to catalyze the oxidation of propane by air. Subsequent work of Looney suggested that propylene was a primary product of this oxidation; hence most investigations since then have been confined...

Billingsley, David Stuart

1958-01-01T23:59:59.000Z

214

Cerium Oxide Coating for Oxidation Reduction  

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

Award In order to produce power more efficiently and cleanly, the next generation of power plant boilers, turbines, solid oxide fuel cells (SOFCs) and other essential...

215

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

216

Use of underpotential deposition of zinc to mitigate hydrogen absorption into Monel K500  

SciTech Connect (OSTI)

Polarization experiments and a potentiostatic pulse technique have been used to show that a monolayer coverage of zinc effectively inhibits the absorption of hydrogen into Monel K500. By depositing a monolayer of zinc on Monel K500 the hydrogen, evolution reaction and hydrogen ingress flux rate were reduced by 60%.

Zheng, G.; Popov, B.N.; White, R.E. (Univ. of South Carolina, Columbia, SC (United States). Dept. of Chemical Engineering)

1994-05-01T23:59:59.000Z

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

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

219

Chemical Vapor Deposited Zinc Sulfide. SPIE Press Monograph  

SciTech Connect (OSTI)

Zinc sulfide has shown unequaled utility for infrared windows that require a combination of long-wavelength infrared transparency, mechanical durability, and elevated-temperature performance. This book reviews the physical properties of chemical vapor deposited ZnS and their relationship to the CVD process that produced them. An in-depth look at the material microstructure is included, along with a discussion of the material's optical properties. Finally, because the CVD process itself is central to the development of this material, a brief history is presented.

McCloy, John S.; Tustison, Randal W.

2013-04-22T23:59:59.000Z

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

ZINC/AIR BATTERY R & D RESEARCH AND DEVELOPMENT OF BIFUNCTIONAL OXYGEN ELECTRODE TASKS I AND II  

E-Print Network [OSTI]

ED SCI ENCE DIVISION ZINC/AIR BATTERY R&D C-.J(~ur.1":! rfSAC03-76SF00098 LBL-22661 ZINC/AIR BATTERY R&D RESEARCH ANDanalysis of the zinc-air battery system at one of the

Klein, M.

2009-01-01T23:59:59.000Z

222

Thermal-sprayed zinc anodes for cathodic protection of steel-reinforced concrete bridges  

SciTech Connect (OSTI)

Thermal-sprayed zinc anodes are being used in Oregon in impressed current cathodic protection (ICCP) systems for reinforced concrete bridges. The U.S. Department of Energy, Albany Research Center, is collaborating with the Oregon Department of Transportation (ODOT) to evaluate the long-term performance and service life of these anodes. Laboratory studies were conducted on concrete slabs coated with 0.5 mm (20 mil) thick, thermal-sprayed zinc anodes. The slabs were electrochemically aged at an accelerated rate using an anode current density of 0.032 A/m2 (3mA/ft2). Half the slabs were preheated before thermal-spraying with zinc; the other half were unheated. Electrochemical aging resulted in the formation at the zinc-concrete interface of a thin, low pH zone (relative to cement paste) consisting primarily of ZnO and Zn(OH)2, and in a second zone of calcium and zinc aluminates and silicates formed by secondary mineralization. Both zones contained elevated concentrations of sulfate and chloride ions. The original bond strength of the zinc coating decreased due to the loss of mechanical bond to the concrete with the initial passage of electrical charge (aging). Additional charge led to an increase in bond strength to a maximum as the result of secondary mineralization of zinc dissolution products with the cement paste. Further charge led to a decrease in bond strength and ultimately coating disbondment as the interfacial reaction zones continued to thicken. This occurred at an effective service life of 27 years at the 0.0022 A/m2 (0.2 mA/ft2) current density typically used by ODOT in ICCP systems for coastal bridges. Zinc coating failure under tensile stress was primarily cohesive within the thickening reaction zones at the zinc-concrete interface. There was no difference between the bond strength of zinc coatings on preheated and unheated concrete surfaces after long service times.

Bullard, Sophie J.; Covino, Bernard S., Jr.; Cramer, Stephen D.; McGill, Galen E. (Oregon Dept. of Transportation)

1996-01-01T23:59:59.000Z

223

Crust and Upper Mantle P Wave Velocity Structure Beneath Valles...  

Open Energy Info (EERE)

Crust and Upper Mantle P Wave Velocity Structure Beneath Valles Caldera, New Mexico- Results from the Jemez Teleseismic Tomography Experiment Jump to: navigation, search OpenEI...

224

Upper crustal faulting in an obliquely extending orogen, structural...  

Open Energy Info (EERE)

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

225

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...

226

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

Open Energy Info (EERE)

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

227

Oxidation of coal and coal pyrite mechanisms and influence on surface characteristics  

SciTech Connect (OSTI)

During the ninth quarter, electrochemical experiments were done on electrodes prepared from Upper Freeport coal pyrite and Pittsburgh coal pyrite samples provided by the US Bureau of Mines, Pittsburgh Research Center, Pennsylvania. Scanning electron microscopy and energy dispersive X-ray analysis were done to characterize the morphology and composition of the surface of as-received coal, oxidized coal and coal pyrite. In addition, electrokinetic tests were done on Upper Freeport coal pyrite.

Doyle, F.M.

1992-01-01T23:59:59.000Z

228

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

229

EFFECT OF PORE SIZE ON TRAPPING ZINC VAPORS  

SciTech Connect (OSTI)

A series of experiments were conducted to determine the effect of pore size on pumping efficiency and zinc vapor trapping efficiency. A simple pumping efficiency test was conducted for all five pore diameters where it was observed that evacuation times were adversely affected by reducing the pore size below 5 {micro}m. Common test conditions for the zinc trapping efficiency experiments were used. These conditions resulted in some variability, to ascribe different efficiencies to the filter media. However, the data suggest that there is no significant difference in trapping efficiency for filter media with pores from 0.2 to 20 {micro}m with a thickness of 0.065-inch. Consequently, the 20 {micro}m pore filter media that is currently used at SRS is a suitable filter material for to utilize for future extractions. There is evidence that smaller pore filter will adversely affect the pumping times for the TEF and little evidence to suggest that a smaller pore diameters have significant impact on the trapping efficiency.

Korinko, P.

2010-12-17T23:59:59.000Z

230

Mineralogical characterization of steel industry hazardous waste and refractory sulfide ores for zinc and gold recovery processing  

SciTech Connect (OSTI)

The steel industry generates dust as a waste product from high temperature electric arc furnaces (EAF), which is a major step in processing scrap metal into steel. The Environmental Protection Agency (EPA) has classified EAF dust as KO61 hazardous waste, due to its lead, cadmium, and chromium content. The dust also contains valuable zinc, averaging 19%. Detailed mineralogical characterization show the zinc is present as crystals of franklinite-magnetite-jacobsite solid solutions in calcium-iron-silicate glass spheres and as zincite mostly as very small individual spheres. Much of the chromium is present in an insoluble form in solid solution in the iron spinels. This microscopic research is a valuable tool in determining treatment processes for the 600,000 tons of dust generated annually in the US. Refractory gold ores, pyrite and arsenopyrite, have been studied to determine additional, cost-effective methods of processing. One technique under investigation involves roasting sulfide mineral particles to hematite to create porosity through which a leach can permeate to recover the gold. Portlandite, Ca(OH)[sub 2], is added to the roast for retention of hazardous sulfur and arsenic. Modern microscopic and spectroscopic techniques, such electron spectroscopy for chemical analysis, cathodoluminescence microscopy, and electron microprobe, have been applied, as well as reflected light and dark field microscopy, and scanning electron microscopy to determine the mineralogy of the sulfur, arsenic, and iron phases, and the extent of porosity, permeability, and oxidation state of the ore particles at various roasting temperatures. It is concluded that mineralogical techniques can be effectively applied to the solution of environmental problems.

Hagni, A.M.; Hagni, R.D. (Univ. of Missouri, Rolla, MO (United States). Geology Geophysics Dept.)

1994-04-01T23:59:59.000Z

231

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

232

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.

233

Upper bounds for multiphase composites in any dimension  

E-Print Network [OSTI]

We prove a rigorous upper bound for the effective conductivity of an isotropic composite made of several isotropic components in any dimension. This upper bound coincides with the Hashin Shtrikman bound when the volume ratio of all phases but any two vanish.

Luis Silvestre

2010-10-12T23:59:59.000Z

234

GLIA 46:18–27 (2004) Potassium Attenuates Zinc-Induced Death of Cultured Cortical Astrocytes  

E-Print Network [OSTI]

zinc toxicity; neurons; astrocytes; intracellular zinc; depolarization; zinc accumulation Transient global ischemia induces CA1 hippocampal neuronal death without astrocyte death, perhaps mediated in part by the toxic translocation of zinc from presynaptic terminals to postsynaptic neurons. We tested the hypothesis that cellular depolarization, which occurs in the ischemic brain due to increased extracellular potassium and energy failure, might contribute to astrocyte resistance to zinc-induced death. We previously reported that neurons in mixed cortical neuronal-astrocyte cultures were more vulnerable to a 5–15-min exposure to Zn 2 ? than astrocytes in the same cultures. In the present report, we show that (1) neurons in isolation or in conjunction with astrocytes were 2–3-fold more sensitive to a 15-min nondepolarizing Zn 2 ? exposure than are glia; (2) KCl-induced depolarization attenuated glial vulnerability to zinc toxicity but potentiated neuronal vulnerability to zinc toxicity; (3) Zn 2 ?-induced glial death was attenuated by T-type Ca 2 ? channel blockade, as well as compounds that increase NAD ?

Christian T. Sheline; Toshihiro Takata; Howard Ying; Lorella M. T. Canzoniero; Aizhen Yang; Shan Ping Yu; Dennis; W. Choi; Key Words

235

Deposition of nanostructured photocatalytic zinc ferrite films using solution precursor plasma spraying  

SciTech Connect (OSTI)

Highlights: Black-Right-Pointing-Pointer Highly economic solution precursor route capable of producing films/coating even for mass scale production. Black-Right-Pointing-Pointer Pure spinel phase ZnFe{sub 2}O{sub 4} porous, immobilized films deposited in single step. Black-Right-Pointing-Pointer Parameter optimization yields access to nanostructuring in SPPS method. Black-Right-Pointing-Pointer The ecofriendly immobilized ferrite films were active under solar radiation. Black-Right-Pointing-Pointer Such magnetic system display advantage w.r.t. recyclability after photocatalyst extraction. -- Abstract: Deposition of pure spinel phase, photocatalytic zinc ferrite films on SS-304 substrates by solution precursor plasma spraying (SPPS) has been demonstrated for the first time. Deposition parameters such as precursor solution pH, concentration, film thickness, plasma power and gun-substrate distance were found to control physico-chemical properties of the film, with respect to their crystallinity, phase purity, and morphology. Alkaline precursor conditions (7 < pH {<=} 10) were found to favor oxide film formation. The nanostructured films produced under optimized conditions, with 500 mM solution at pH {approx} 8.0, yielded pure cubic phase ZnFe{sub 2}O{sub 4} film. Very high/low precursor concentrations yielded mixed phase, less adherent, and highly inhomogeneous thin films. Desired spinel phase was achieved in as-deposited condition under appropriately controlled spray conditions and exhibited a band gap of {approx}1.9 eV. The highly porous nature of the films favored its photocatalytic performance as indicated by methylene blue de-coloration under solar radiation. These immobilized films display good potential for visible light photocatalytic applications.

Dom, Rekha; Sivakumar, G.; Hebalkar, Neha Y.; Joshi, Shrikant V. [International Advanced Research Centre for Powder Metallurgy and New Materials, Balapur PO, Hyderabad 500 005, AP (India)] [International Advanced Research Centre for Powder Metallurgy and New Materials, Balapur PO, Hyderabad 500 005, AP (India); Borse, Pramod H., E-mail: phborse@arci.res.in [International Advanced Research Centre for Powder Metallurgy and New Materials, Balapur PO, Hyderabad 500 005, AP (India)

2012-03-15T23:59:59.000Z

236

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

237

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

238

Oxidation of coal and coal pyrite mechanisms and influence on surface characteristics. [Coal pyrite electrodes  

SciTech Connect (OSTI)

The objective of this research is to develop a mechanistic understanding of the oxidation of coal and coal pyrite, and to correlate the intrinsic physical and chemical properties of these minerals, along with changes resulting from oxidation, with those surface properties that influence the behavior in physical cleaning processes. The results will provide fundamental insight into oxidation, in terms of the bulk and surface chemistry, the microstructure, and the semiconductor properties of the pyrite. During the eighth quarter, wet chemical and dry oxidation tests were done on Upper Freeport coal from the Troutville [number sign]2 Mine, Clearfield County, Pennsylvania. In addition electrochemical experiments were done on electrodes prepared from Upper Freeport coal pyrite and Pittsburgh coal pyrite samples provided by the US Bureau of Mines, Pittsburgh Research Center, Pennsylvania.

Doyle, F.M.

1992-01-01T23:59:59.000Z

239

Development of Thin Section Zinc Die Casting Technology  

SciTech Connect (OSTI)

A new high fluidity zinc high pressure die casting alloy, termed the HF alloy, was developed during laboratory trials and proven in industrial production. The HF alloy permits castings to be achieved with section thicknesses of 0.3 mm or less. Technology transfer activities were conducted to develop usage of the HF high fluidity alloy. These included production of a brochure and a one-hour webinar on the HF alloy. The brochure was then sent to 1,184 product designers in the Interzinc database. There was excellent reception to this mailing, and from this initial contact 5 technology transfer seminars were conducted for 81 participants from 30 companies across a wide range of business sectors. Many of the successful applications to date involve high quality surface finishes. Design and manufacturing assistance was given for development of selected applications.

Goodwin, Frank [International Lead Zinc Research Org., Inc.] [International Lead Zinc Research Org., Inc.

2013-10-31T23:59:59.000Z

240

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

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

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.

242

Transient current distributions in porous zinc electrodes in KOH electrolyte  

SciTech Connect (OSTI)

A zero-resistance ammeter circuit with a 10-channel operational amplifier was used to measure the current distribution during a discharge of 10 to 100 mA with simulated zinc porous electrodes in 7.24 M KOH saturated with ZnO. The reaction distribution was found to be highly nonuniform, with 70 to 78% of the charge transfer reaction completed in a depth of 0.01 cm. The high nonuniformity of the initial reaction profile was believed to be due to low conductivity of the electrolyte in the electrode pores. The current distribution changes during passivation of the electrode were experimentally obtained. A mathematical model based upon a macroscope averaging technique was used to predict the time dependence of charge transfer reaction profiles. With mathematical model, current distributions and overpotentials were predicted as a function of time for the segmented zinc electrode discharged at a current of 10 to 100 mA; for these predictions, assumed values of both precipitation rate constants for porous ZnO and diffusion coefficients for hydroxide and zincate ions were used. A gradual decrease in the specific conductivity of the pore electrolyte to 20% of the initial value during discharge yields predictions of current distributions and overpotentials in good agreement with the experimental data. The extent of reduction in the specific conductivity of the pore electrolyte implies a supersaturation of zincate of four times chemical saturation, which was been observed experimentally.At high discharge current (25 to 100 mA), the passivation behavior of the electrode has been simulated. The results of the experiments and mathematical model show that the effective reaction penetration depth is less than 0.02 cm.

Liu, M.B.; Yamazaki, Y.; Cook, G.M.; Yao, N.P.

1981-02-01T23:59:59.000Z

243

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

244

Statistical Confirmation of a Stellar Upper Mass Limit  

E-Print Network [OSTI]

We derive the expectation value for the maximum stellar mass (m_max) in an ensemble of N stars, as a function of the IMF upper-mass cutoff (m_up) and N. We statistically demonstrate that the upper IMF of the local massive star census observed thus far in the Milky Way and Magellanic Clouds clearly exhibits a universal upper mass cutoff around 120 - 200 M_sun for a Salpeter IMF, although the result is more ambiguous for a steeper IMF.

M. S. Oey; C. J. Clarke

2005-01-07T23:59:59.000Z

245

Relating the biogeochemistries of zinc, cobalt, and phosphorus to phytoplankton activities in the sea  

E-Print Network [OSTI]

This thesis explores the potential of zinc, cobalt, and phosphorus to influence primary production in the subarctic North Pacific, the Bering Sea, and the North Atlantic Ocean. In the North Pacific and Bering Sea, total ...

Wisniewski, Rachel J. (Rachel Jane), 1978-

2006-01-01T23:59:59.000Z

246

E-Print Network 3.0 - arabidopsis tandem zinc Sample Search Results  

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

zinc Page: << < 1 2 3 4 5 > >> 1 Tandem gene arrays: a challenge for functional genomics Summary: % in poplar 26, and 35% in maize 3. Most tandem multipli- cations in...

247

A Novel Imaging Approach for Early Detection of Prostate Cancer Based on Endogenous Zinc Sensing  

E-Print Network [OSTI]

The early detection of prostate cancer is a life-saving event in patients harboring potentially aggressive disease. With the development of malignancy, there is a dramatic reduction in the zinc content of prostate tissue ...

Ghosh, Subrata K.

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

The role of zinc in the treatment of palm kernel cake toxicity in sheep  

E-Print Network [OSTI]

Malaysia, 43400 UPM Serdang, Selangor, Malaysia Palm kernel cake (PKC), a product of the oil palm industryThe role of zinc in the treatment of palm kernel cake toxicity in sheep M Hair-Bejo, AR Alimon, J

Paris-Sud XI, Université de

250

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

251

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

252

The synthesis and characterization of zinc(II) and copper(II) diphosphonatoalkanes  

E-Print Network [OSTI]

THE SYNTHESIS AND CHARACTERIZATION OF ZINC(II) AND COPPER(II) DIPHOSPHONATOALKANES A Thesis by DEIRDRE I. ARNOLD Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree... of MASTER OF SCIENCE August 2000 Major Subject: Chemistry THE SYNTHESIS AND CHARACTERIZATION OF ZINC(II) AND COPPER(II) DIPHOSPHONATOALKANES A Thesis by DEIRDRE I. ARNOLD Submitted to Texas ARM University in partial fulfillment of the requirements...

Arnold, Deirdre I.

2000-01-01T23:59:59.000Z

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

Barium oxide, calcium oxide, magnesia, and alkali oxide free glass  

DOE Patents [OSTI]

A glass composition consisting essentially of about 10-45 mole percent of SrO; about 35-75 mole percent SiO.sub.2; one or more compounds from the group of compounds consisting of La.sub.2O.sub.3, Al.sub.2O.sub.3, B.sub.2O.sub.3, and Ni; the La.sub.2O.sub.3 less than about 20 mole percent; the Al.sub.2O.sub.3 less than about 25 mole percent; the B.sub.2O.sub.3 less than about 15 mole percent; and the Ni less than about 5 mole percent. Preferably, the glass is substantially free of barium oxide, calcium oxide, magnesia, and alkali oxide. Preferably, the glass is used as a seal in a solid oxide fuel/electrolyzer cell (SOFC) stack. The SOFC stack comprises a plurality of SOFCs connected by one or more interconnect and manifold materials and sealed by the glass. Preferably, each SOFC comprises an anode, a cathode, and a solid electrolyte.

Lu, Peizhen Kathy; Mahapatra, Manoj Kumar

2013-09-24T23:59:59.000Z

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

Mixed oxide solid solutions  

DOE Patents [OSTI]

The present invention is a mixed oxide solid solution containing a tetravalent and a pentavalent cation that can be used as a support for a metal combustion catalyst. The invention is furthermore a combustion catalyst containing the mixed oxide solid solution and a method of making the mixed oxide solid solution. The tetravalent cation is zirconium(+4), hafnium(+4) or thorium(+4). In one embodiment, the pentavalent cation is tantalum(+5), niobium(+5) or bismuth(+5). Mixed oxide solid solutions of the present invention exhibit enhanced thermal stability, maintaining relatively high surface areas at high temperatures in the presence of water vapor.

Magno, Scott (Dublin, CA); Wang, Ruiping (Fremont, CA); Derouane, Eric (Liverpool, GB)

2003-01-01T23:59:59.000Z

257

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

258

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

259

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

260

Hydrology and Glaciers in the Upper Indus Basin  

E-Print Network [OSTI]

Examines the state of the science associated with the snow and ice hydrology in the Upper Indus Basin (IUB), reviewing the literature and data available on the present and projected role of glaciers, snow fields, and stream ...

Yu, Winston

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

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

262

Upper bounds on minimum distance of nonbinary quantum stabilizer codes  

E-Print Network [OSTI]

The most popular class of quantum error correcting codes is stabilizer codes. Binary quantum stabilizer codes have been well studied, and Calderbank, Rains, Shor and Sloane (July 1998) have constructed a table of upper bounds on the minimum distance...

Kumar, Santosh

2005-11-01T23:59:59.000Z

263

Sandia National Laboratories: Upper Rio Grande Simulation Model...  

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

Energy-Water Planning Upper Rio Grande Simulation Model (URGSiM) Contact Jesse Roach jdroach@sandia.gov (505) 284-9367 Last Updated: April 23, 2012 Go To Top ...

264

innovati nNREL Designs Promising New Oxides for Solar Cells  

E-Print Network [OSTI]

material. The upper TCO contact in a solar cell allows light to reach the absorber material below, whichinnovati nNREL Designs Promising New Oxides for Solar Cells High-efficiency, thin-film solar cells electricity but are 90% transparent to visible light. Scientists at the National Renewable Energy Laboratory

265

Geology, volcanology and geochemistry Drainage pattern and regional morphostructure at Melka Kunture (Upper Awash, Ethiopia) ........................83  

E-Print Network [OSTI]

at Melka Kunture (Upper Awash, Ethiopia) ........................83 Guillaume Bardin, Jean-Paul Raynal, Guy Kieffer Volcanic markers in coarse alluvium at Melka Kunture (Upper Awash, Ethiopia (Upper Awash, Ethiopia) ....................................................103 Gérard Poupeau, Guy

Paris-Sud XI, Université de

266

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

267

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

268

Reducible oxide based catalysts  

DOE Patents [OSTI]

A catalyst is disclosed herein. The catalyst includes a reducible oxide support and at least one noble metal fixed on the reducible oxide support. The noble metal(s) is loaded on the support at a substantially constant temperature and pH.

Thompson, Levi T.; Kim, Chang Hwan; Bej, Shyamal K.

2010-04-06T23:59:59.000Z

269

Oxidation of coal and coal pyrite mechanisms and influence on surface characteristics. Technical progress report, December 31, 1992  

SciTech Connect (OSTI)

During the ninth quarter, electrochemical experiments were done on electrodes prepared from Upper Freeport coal pyrite and Pittsburgh coal pyrite samples provided by the US Bureau of Mines, Pittsburgh Research Center, Pennsylvania. Scanning electron microscopy and energy dispersive X-ray analysis were done to characterize the morphology and composition of the surface of as-received coal, oxidized coal and coal pyrite. In addition, electrokinetic tests were done on Upper Freeport coal pyrite.

Doyle, F.M.

1992-12-31T23:59:59.000Z

270

Zinc Fertilization Plus Liming to Reduce Cadmium Uptake by Romaine Lettuce on Cd-Mineralized Lockwood Soil  

E-Print Network [OSTI]

by emissions from zinc smelters. Trace Subst. Environ.1999) who studied Zn-smelter or mine waste contaminated orgrowing Romaine lettuce on Zn-smelter contaminated soils in

Chaney, Rufus L; Green, Carrie E.; Ajwa, Husein A; Smith, Richard F

2009-01-01T23:59:59.000Z

271

The preparation of zinc silicate/ZnO particles and their use as an efficient UV absorber  

SciTech Connect (OSTI)

Highlights: {yields} We used innovative gel-route in order to prepare zinc silicate/ZnO nano-particles. {yields} Continuous reactor was efficient for synthesizing ZnO and zinc silicate/ZnO precursors. {yields} Introduction of Si into reaction mixture influenced on particle size and their photoactivity. {yields} Prepared particles are appropriate for UV absorbers in polymers. -- Abstract: The formation of zinc silicate/ZnO particles synthesized by a two-step method and their incorporation into PMMA is presented. In the first step a segmented-flow tubular reactor was used for the continuous room-temperature preparation of a zinc silicate/Zn(OH){sub 2} gel that was thermally treated after rinsing and drying in the second step. The same preparation procedure was also employed for the synthesis of pure ZnO and pure zinc silicate particles. It was found that the presence of the zinc silicate phase significantly influenced the final particle size, decreased the degree of crystallization and reduced the particles' UV absorption capabilities. The reduced photocatalytic activity of the zinc silicate/ZnO particles indicated that the majority of ZnO crystallites were formed inside the zinc silicate matrix. The nanocomposite prepared from zinc silicate/ZnO particles (0.04 wt.%) and PMMA showed high UV shielding and at the same time sufficient transmittance in the visible-light region.

Podbrscek, Peter [National Institute of Chemistry, Hajdrihova 19, SI 1000 Ljubljana (Slovenia)] [National Institute of Chemistry, Hajdrihova 19, SI 1000 Ljubljana (Slovenia); Drazic, Goran [Department for Nanostructured Materials, Jozef Stefan Institute, Jamova 39, SI 1000 Ljubljana (Slovenia)] [Department for Nanostructured Materials, Jozef Stefan Institute, Jamova 39, SI 1000 Ljubljana (Slovenia); Anzlovar, Alojz [National Institute of Chemistry, Hajdrihova 19, SI 1000 Ljubljana (Slovenia) [National Institute of Chemistry, Hajdrihova 19, SI 1000 Ljubljana (Slovenia); Center of Excellence for Polymer Materials and Technologies, Tehnoloski Park 24, 1000 Ljubljana (Slovenia); Orel, Zorica Crnjak, E-mail: zorica.crnjak.orel@ki.si [National Institute of Chemistry, Hajdrihova 19, SI 1000 Ljubljana (Slovenia); Center of Excellence for Polymer Materials and Technologies, Tehnoloski Park 24, 1000 Ljubljana (Slovenia)

2011-11-15T23:59:59.000Z

272

The Zinc Metalloregulatory Protein Synechococcus PCC7942 SmtB Binds a Single Zinc Ion per Monomer with High Affinity in a Tetrahedral Coordination Geometry  

E-Print Network [OSTI]

. Scott,§ and David P. Giedroc*, Department of Biochemistry and Biophysics, Center for AdVanced metallothionein that functions in the sequestra- tion and metabolism of zinc in Synechococcus (7). Smt-2-12 inverted repeat. Each half-site is characterized by a consensus 5-TGAA sequence to which SmtB binds (9

Scott, Robert A.

273

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

274

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

275

PROMOTED ZINC CHROMITE CATALYSTS FOR HIGHER ALCOHOL SYNTHESIS  

SciTech Connect (OSTI)

During this reporting period, a ''zinc chromite'' catalyst promoted with 6 wt.% cesium (Cs) was evaluated at the following conditions: Temperature--375 C; Total Pressure--6.8 MPa (1000 psig); Gas Hourly Space Velocity (GHSV) - 5000 standard liters/kg(cat)-hr, and; H{sub 2}/CO feed ratio--1.0 mole/mole. Decahydronaphthalene (DHN) was used as the slurry liquid. The experiment lasted for eight days of continuous operation. Although the experimental data once again did not exhibit the desired degree of consistency, the data did show that methanol was the primary reaction product. The slurry liquid did not decompose or alkylate to a measurable extent during the continuous 8-day experiment. There was a relatively significant loss of catalyst surface area during the experiment. Gas chromatography/mass spectrometry (GC/MS) analysis of various fractions of ''spent'' THQ was carried out. The fractions were prepared by silica gel liquid chromatography (LC). Chemical formuli and probable structures for each major compound were obtained. However, a higher degree of purification will be necessary to allow nuclear magnetic resonance (NMR) analysis to be used for definitive compound identification. A new Maxpro gas booster (DLE 15-75) was purchased because the existing Haskel gas booster once again developed a severe leak of carbon monoxide and hydrogen, and was judged to be unworthy of repair.

Ms. Xiaolei Sun; Professor George W. Roberts

2000-08-29T23:59:59.000Z

276

Studies of micromorphology and current efficiency of zinc electrodeposited from flowing chloride electrolytes  

SciTech Connect (OSTI)

Results of a study of the micromorphology and current efficiency of zinc electrodeposited from flowing, acidic chloride solutions are reported. The effects of six variables were examined: flow rate, current density, zinc and hydrogen ion concentration, concentrations of nickel, iron and cadmium impurity ions, and the nature of the substrate. The development of micromorphology was studied in-situ by means of videomicrography and ex-situ by means of scanning electron microscopy. This investigation focused on the formation of grooved deposits, which are found under a wide range of deposition conditions. The major conclusions of this study are: the most important variable determining whether grooved deposits form is the interfacial concentration; large protrusions orient themselves parallel to the flow direction with the orientation starting upstream and progressing downstream; large protrusions become ridges due to growth of the highest current density portions of the electrode under mass transport control. The current efficiency was measured using EDTA titration and weight measurements. The fraction of the current taken by zinc deposition increased with zinc concentration, ranging up to 100%, and decreased with pH. The efficiency of zinc deposition was affected by the flow rate and the substrate employed. Impurities lowered the current efficiency.

Mc Vay, L.; Muller, R.H.; Tobias, C.W.

1986-05-01T23:59:59.000Z

277

Oxidation of coal and coal pyrite mechanisms and influence on surface characteristics. Technical progress report, September 30, 1992  

SciTech Connect (OSTI)

The objective of this research is to develop a mechanistic understanding of the oxidation of coal and coal pyrite, and to correlate the intrinsic physical and chemical properties of these minerals, along with changes resulting from oxidation, with those surface properties that influence the behavior in physical cleaning processes. The results will provide fundamental insight into oxidation, in terms of the bulk and surface chemistry, the microstructure, and the semiconductor properties of the pyrite. During the eighth quarter, wet chemical and dry oxidation tests were done on Upper Freeport coal from the Troutville {number_sign}2 Mine, Clearfield County, Pennsylvania. In addition electrochemical experiments were done on electrodes prepared from Upper Freeport coal pyrite and Pittsburgh coal pyrite samples provided by the US Bureau of Mines, Pittsburgh Research Center, Pennsylvania.

Doyle, F.M.

1992-12-31T23:59:59.000Z

278

Oxidative Tritium Decontamination System  

DOE Patents [OSTI]

The Oxidative Tritium Decontamination System, OTDS, provides a method and apparatus for reduction of tritium surface contamination on various items. The OTDS employs ozone gas as oxidizing agent to convert elemental tritium to tritium oxide. Tritium oxide vapor and excess ozone gas is purged from the OTDS, for discharge to atmosphere or transport to further process. An effluent stream is subjected to a catalytic process for the decomposition of excess ozone to diatomic oxygen. One of two configurations of the OTDS is employed: dynamic apparatus equipped with agitation mechanism and large volumetric capacity for decontamination of light items, or static apparatus equipped with pressurization and evacuation capability for decontamination of heavier, delicate, and/or valuable items.

Gentile, Charles A. (Plainsboro, NJ), Guttadora, Gregory L. (Highland Park, NJ), Parker, John J. (Medford, NJ)

2006-02-07T23:59:59.000Z

279

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

280

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

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

ADVANCED OXIDATION PROCESS  

SciTech Connect (OSTI)

The removal of recalcitrant sulfur species, dibenzothiophene and its derivatives, from automotive fuels is an integral component in the development of cleaner burning and more efficient automobile engines. Oxidative desulfurization (ODS) wherein the dibenzothiophene derivative is converted to its corresponding sulfoxide and sulfone is an attractive approach to sulfur removal because the oxidized species are easily extracted or precipitated and filtered from the hydrocarbon phase. Fe-TAML{reg_sign} activators of hydrogen peroxide (TAML is Tetra-Amido-Macrocyclic-Ligand) catalytically convert dibenzothiophene and its derivatives rapidly and effectively at moderate temperatures (50-60 C) and ambient pressure to the corresponding sulfoxides and sulfones. The oxidation process can be performed in both aqueous systems containing alcohols such as methanol, ethanol, or t-butanol, and in a two-phase hydrocarbon/aqueous system containing tert-butanol or acetonitrile. In the biphasic system, essentially complete conversion of the DBT to its oxidized products can be achieved using slightly longer reaction times than in homogeneous solution. Among the key features of the technology are the mild reaction conditions, the very high selectivity where no over oxidation of the sulfur compounds occurs, the near stoichiometric use of hydrogen peroxide, the apparent lack of degradation of sensitive fuel components, and the ease of separation of oxidized products.

Dr. Colin P. Horwitz; Dr. Terrence J. Collins

2003-11-04T23:59:59.000Z

282

Upper Oceanic Energy Response to Tropical Cyclone Passage JOHN A. KNAFF AND MARK DEMARIA  

E-Print Network [OSTI]

Upper Oceanic Energy Response to Tropical Cyclone Passage JOHN A. KNAFF AND MARK DEMARIA NOAA is investigated using a 6-yr daily record of data-driven analyses of two measures of upper ocean energy content information and the upper ocean response. Upper oceanic energy decreases in these metrics are shown to persist

Schubert, Wayne H.

283

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

284

Research, development, and demonstration of nickel-zinc batteries for electric vehicle propulsion. Annual report for 1980  

SciTech Connect (OSTI)

Progress in the development of nickel-zinc batteries for electric vehicles is reported. Information is presented on nickel electrode preparation and testing; zinc electrode preparation with additives and test results; separator development and the evaluation of polymer-blend separator films; sealed Ni-Zn cells; and the optimization of electric vehicle-type Ni-Zn cells. (LCL)

Not Available

1981-03-01T23:59:59.000Z

285

Mineralogical signature of nonsulfide zinc ores at Accha (Peru): A key for recovery Maria Boni a,b,  

E-Print Network [OSTI]

Mineralogical signature of nonsulfide zinc ores at Accha (Peru): A key for recovery Maria Boni a 14 October 2009 Keywords: Nonsulfide zinc Mineralogy Petrography Processing Flowsheet The Accha deposit in Southern Peru is the first case in which an integrated study between mineralogy, petrography

Boni, Maria

286

Fatigue properties of die cast zinc alloys for automotive lock applications  

SciTech Connect (OSTI)

During the 1970’s many automotive lock systems were converted from zinc die casting alloys to engineering plastics for reasons of weight and cost. Recent increases in requirements for precision and security have caused automotive and other lock designers to reconsider zinc alloy die-castings for these applications. To enable this, there is a need for mechanical property data comparable to that of the plastics materials used in these applications. In this work, rotary bending fatigue tests were performed on Alloys 3, 5, ZA-8 and AcuZinc 5 using an R.R. Moore fatigue machine. Testing was performed at 30 Hz and was stopped at 1x107 cycles. The fatigue limit results were compared to data reported in the literature for higher number of cycles and faster rotations.

Schrems, Karol K.; Dogan, Omer N.; Goodwin, F.E. (International Lead and Zinc Research Organization, Research Triangle, NC)

2004-06-01T23:59:59.000Z

287

Deproto-metallation using mixed lithium-zinc and lithium-copper bases and computed CH acidity of 2-substituted quinolines  

E-Print Network [OSTI]

Deproto-metallation using mixed lithium-zinc and lithium-copper bases and computed CH acidity of 2 corresponding iodo derivatives or 2-chlorophenyl ketones using the lithium-zinc or the lithium using the lithium-zinc base. With 3-pyridyl, 2-furyl and 2-thienyl substituents, the reaction took place

Boyer, Edmond

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

Architecture of the upper Sego Sandstone, Book Cliffs, Utah  

E-Print Network [OSTI]

................................................................................................................... 22 SEDIMENTOLOGY.................................................................................................... 26 Marine Shale with Wavy Sandstones............................................................... 26 Highly... surfaces. The cross-section defines an 8.5 kilometer section that begins in Sego Canyon outside of Thompson Springs, Figure 12-Bedding diagram of major facies transitions with sedimentary logs overlain. SEDIMENTOLOGY Upper Sego Sandstone deposits can...

Birkhead, Stanley Scott

2006-04-12T23:59:59.000Z

290

Upper Snake Provincial Assessment May 2004 6. Participants and Affiliations  

E-Print Network [OSTI]

for the Upper Snake Provincial Assessment Idaho Department of Fish and Game: Gregg Servheen Jon Beals Lance Chad Colter Shoshone-Bannock Tribes Larry Dickerson US Fish and Wildlife Service John Fred Shoshone-Bannock Tribes Jim Fredericks Idaho Fish and Game Dan Garren Idaho Fish and Game Lauri Hanauska-Brown Idaho Fish

291

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

292

METHANE SOURCES AND SINKS IN UPPER OCEAN WATERS  

E-Print Network [OSTI]

METHANE SOURCES AND SINKS IN UPPER OCEAN WATERS A DISSERTATION SUBMITTED TO THE GRADUATE DIVISION the distribution of dissolved methane in ocean surface waters were investigated. Water column and sediment trap and Antarctic waters to the oliogotrophic ocean off Hawaii. The methane concentrations in most of the surface

Luther, Douglas S.

293

Transdichotomous algorithms without multiplication some upper and lower bounds  

E-Print Network [OSTI]

Trans­dichotomous algorithms without multiplication ­ some upper and lower bounds Andrej Brodnik 1 that on a RAM with addition, subtraction, bitwise Boolean operations and shifts, but no multiplication; 1g w of w­bit bit strings (or numbers between 0 and 2 w \\Gamma 1). An increasingly popular

Brodnik, Andrej "Andy"

294

PROPRITS MAGNTIQUES DU FERRITE DE ZINC (Fe2 O3.Zn O)  

E-Print Network [OSTI]

PROPRI�T�S MAGN�TIQUES DU FERRITE DE ZINC (Fe2 O3.Zn O) EN RELATION AVEC SA STRUCTURE Par CH. GUILLAUD et M. SAGE. Sommaire. - On a préparé des ferrites de zinc et étudié leurs propriétés magnétiques distribution des ions dans le réseau. Nous avons préparé ce ferrite par les méthodes classiques du mélange d

Paris-Sud XI, Université de

295

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

296

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

297

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

298

Cerium Oxide Coating for Oxidation Reduction  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation Proposed New Substation SitesStanding Friedel Waves,TheoryParliament'v0,MixturesCerium Oxide

299

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

300

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

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

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

302

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

303

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

304

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

305

Characteristics of yttrium oxide laser ceramics with additives  

SciTech Connect (OSTI)

Neodymium- or ytterbium-doped laser ceramics with a disordered crystal-field structure formed by introduction of iso- and heterovalent elements into yttrium oxide are studied. It is shown that these additives broaden the spectral band of laser transitions, which makes it possible to use ceramics as active laser media emitting ultrashort pulses. Lasing was obtained in several samples of this ceramics. At the same time, it is shown that addition of zirconium and hafnium stimulates the Foerster quenching of upper laser levels and pump levels. (extreme light fields and their applications)

Osipov, V V; Solomonov, V I; Orlov, A N; Shitov, V A; Maksimov, R N; Spirina, A V [Institute of Electrophysics, Ural Branch of the Russian Academy of Sciences, Ekaterinburg (Russian Federation)

2013-03-31T23:59:59.000Z

306

Molecular water oxidation catalyst  

DOE Patents [OSTI]

A dimeric composition of the formula: ##STR1## wherein L', L", L'", and L"" are each a bidentate ligand having at least one functional substituent, the ligand selected from bipyridine, phenanthroline, 2-phenylpyridine, bipyrimidine, and bipyrazyl and the functional substituent selected from carboxylic acid, ester, amide, halogenide, anhydride, acyl ketone, alkyl ketone, acid chloride, sulfonic acid, phosphonic acid, and nitro and nitroso groups. An electrochemical oxidation process for the production of the above functionally substituted bidentate ligand diaqua oxo-bridged ruthenium dimers and their use as water oxidation catalysts is described.

Gratzel, Michael (St. Sulpice, CH); Munavalli, Shekhar (Bel Air, MD); Pern, Fu-Jann (Lakewood, CO); Frank, Arthur J. (Lakewood, CO)

1993-01-01T23:59:59.000Z

307

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

308

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

309

Zinc ferrite nanoparticle as a magnetic catalyst: Synthesis and dye degradation  

SciTech Connect (OSTI)

Graphical abstract: Photocatalytic degradation of Reactive Red 198 and Reactive Red 120 by the synthesized zinc ferrite nanoparticle. - Highlights: • Magnetic zinc ferrite nanoparticle was synthesized and characterized. • Photocatalytic dye degradation by magnetic nanoparticle was studied. • Formate, acetate and oxalate were detected as dominant dye degradation aliphatic intermediates. • Nitrate and sulfate ions were detected as mineralization products of dyes. • Zinc ferrite nanoparticle was an effective magnetic photocatalyst to degrade dyes. - Abstract: In this paper, magnetic zinc ferrite (ZnFe{sub 2}O{sub 4}) nanoparticle was synthesized and its photocatalytic dye degradation ability from colored wastewater was studied. Reactive Red 198 (RR198) and Reactive Red 120 (RR120) were used as model dyes. The characteristics of ZnFe{sub 2}O{sub 4} were investigated using Fourier transform infrared (FTIR), X-ray diffraction (XRD) and scanning electron microscope (SEM). Photocatalytic dye degradation by ZnFe{sub 2}O{sub 4} was studied by UV–vis spectrophotometer and ion chromatography (IC). The effects of ZnFe{sub 2}O{sub 4} dosage, initial dye concentration and salt on dye degradation were evaluated. Formate, acetate and oxalate anions were detected as dominant aliphatic intermediate. Inorganic anions (nitrate and sulfate anions) were detected as dye mineralization products. The results indicated that ZnFe{sub 2}O{sub 4} could be used as a magnetic photocatalyst to degrade dyes from colored wastewater.

Mahmoodi, Niyaz Mohammad, E-mail: mahmoodi@icrc.ac.ir

2013-10-15T23:59:59.000Z

310

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

311

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

312

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.

313

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

314

Tire-Wear Particles as a Source of Zinc to the Environment  

E-Print Network [OSTI]

(11, 15), brake linings (11, 15, 16), and rubber tires (9, 12, 17). Tire-wear particles have been.S. Geological Survey, MS 430, 12201 Sunrise Valley Drive, Reston, Virginia 20192 Tire-tread material has a zinc (Zn) content of about 1 wt %. The quantity of tread material lost to road surfaces by abrasion has

315

Effects of Eutrophication on Concentrations and Speciation of Copper, Zinc, and Lead in West Falmouth Harbor  

E-Print Network [OSTI]

Effects of Eutrophication on Concentrations and Speciation of Copper, Zinc, and Lead in West anoxic conditions and high carbon content favor relatively stable forms of heavy metals, eutrophication suggest that conditions associated with eutrophication do increase heavy metal retention in West Falmouth

Vallino, Joseph J.

316

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.

317

Nanorodnanosheet hierarchically structured ZnO crystals on zinc foil as flexible photoanodes for  

E-Print Network [OSTI]

for dye-sensitized solar cells Rui Gao,ab Jianjun Tian,a Zhiqiang Liang,a Qifeng Zhang,a Liduo Wang method on zinc foil and used as flexible photoanodes in dye-sensitized solar cells (DSCs). Compared of the NR­NS hierarchical structures are discussed. 1 Introduction Dye-sensitized solar cells (DSCs

Cao, Guozhong

318

Modeling Zinc and Sodium Chloride Migration in Vadose Zone Soils Beneath Stormwater Infiltration Devices  

E-Print Network [OSTI]

be seen in the field. Based on model results, shallow groundwater will be rapidly and highly impactedModeling Zinc and Sodium Chloride Migration in Vadose Zone Soils Beneath Stormwater Infiltration device. Introduction Urbanization has increased the amount of impervious surfaces, leading to an increase

Clark, Shirley E.

319

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

320

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

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

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.

322

Nanostructured transition metal oxides useful for water oxidation catalysis  

DOE Patents [OSTI]

The present invention provides for a composition comprising a nanostructured transition metal oxide capable of oxidizing two H.sub.2O molecules to obtain four protons. In some embodiments of the invention, the composition further comprises a porous matrix wherein the nanocluster of the transition metal oxide is embedded on and/or in the porous matrix.

Frei, Heinz M; Jiao, Feng

2013-12-24T23:59:59.000Z

323

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: Individual simulation modules for each fuel cell type · Tubular SOFC · Planar SOFC · MCFC · PEM Reformer · Slow pressure transients #12;Fuel Cell Assumptions · H2 electrochemically oxidized only · CO consumed

Mease, Kenneth D.

324

Oxidative Reforming of Biodiesel Over Molybdenum (IV) Oxide  

E-Print Network [OSTI]

Oxidative Reforming of Biodiesel Over Molybdenum (IV) Oxide Jessica Whalen, Oscar Marin Flores, Su University INTRODUCTION Energy consumption continues to skyrocket worldwide. Biodiesel is a renewable fuel as potential feedstock in solid oxide fuel cells. Petroleum based fuels become scarcer daily, and biodiesel

Collins, Gary S.

325

Benefits of recycling galvanized steel scrap for recovery of high-quality steel and zinc metal  

SciTech Connect (OSTI)

Argonne National Laboratory (ANL) and Metal Recovery Industries, Inc. (MRII), in cost-sharing collaboration, have developed an electrolytic process to separate and recover steel and zinc from galvanized steel scrap. This work has been supported by the US DOE. An assessment of available dezinc technology was begun in 1987 which (1) screened process concepts for separating and recovering zinc and steel from galvanized ferrous scrap, (2) selected electrochemical stripping in hot caustic as the most promising process, (3) evaluated the technical and economic feasibility of the selected process on the basis of fundamental electrochemical studies, (4) experimentally verified the technical and economic feasibility of the process in a phased evaluation from bench-scale controlled experiments through batch tests of actual scrap up to six ton lots, and (5) concluded that the process has technical and economic merit and requires larger- scale evaluation in a continuous mode as the final phase of process development. This work has attracted worldwide interest. Preliminary economic analysis indicates that the cost of the recovered ferrous scrap would be about $150/ton (at a base cost of $110/ton for galvanized scrap), including credit for the co-product zinc. Concentrations of zinc, lead, cadmium and other coating constituents on loose scrap are reduced by a minimum of 98%, with zinc, in particular, reduced to below 0.1%. Removal efficiencies on baled scrap with bulk densities between 60 and 245 pounds per cubic foot range from 80 to 90%. About 1000 tons of galvanized scrap bales have been treated in batch operation at MRII in Hamilton, Ontario. A pilot plant for continuous treatment of 40 ton/day of loose scrap is being built by MRII in East Chicago, Indiana, with operation starting in early 1992. 9 refs.

Dudek, F.J.; Daniels, E.J. (Argonne National Lab., IL (United States)); Morgan, W.A. (Metal Recovery Industries, Inc., Hamilton, ON (Canada))

1991-11-04T23:59:59.000Z

326

Highly oxidized superconductors  

DOE Patents [OSTI]

Novel superconducting materials in the form of compounds, structures or phases are formed by performing otherwise known syntheses 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.

Morris, Donald E. (Kensington, CA)

1994-01-01T23:59:59.000Z

327

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

328

Optically transparent yttrium oxide  

SciTech Connect (OSTI)

A body is described comprising at least 99.9% yttrium oxide having a density of at least 99% of theoretically density, a sample of the body having a in-line transmission of at least 73%, over a wavelength range of 2-5 microns with the sample having a thickness of 0.375 inches.

Hartnett, T.; Greenberg, M.; Gentilman, R.L.

1988-08-02T23:59:59.000Z

329

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

330

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

331

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

332

Evaluation of novel reactive MgO activated slag binder for the immobilisation of lead and zinc  

E-Print Network [OSTI]

but also chemically react with the 39 heavy metals to form complex compounds or simply precipitate them due to the high pH of 40 the system (Spence and Shi, 2004). However, the production of PC is associated with 41 intensive energy use and is reported... in the presence of lead or zinc, which are commonly encountered heavy metals in the 48 contaminated soils and other wastes. In terms of strength development, Qian et al. (2003a, 49 2003b) studied zinc-doped waterglass activated slag (zinc/binder = 0.5 wt% and 2...

Jin, Fei; Al-Tabbaa, Abir

2014-08-12T23:59:59.000Z

333

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

334

REVIEW OF PLUTONIUM OXIDATION LITERATURE  

SciTech Connect (OSTI)

A brief review of plutonium oxidation literature was conducted. The purpose of the review was to ascertain the effect of oxidation conditions on oxide morphology to support the design and operation of the PDCF direct metal oxidation (DMO) furnace. The interest in the review was due to a new furnace design that resulted in oxide characteristics that are different than those of the original furnace. Very little of the published literature is directly relevant to the DMO furnace operation, which makes assimilation of the literature data with operating conditions and data a convoluted task. The oxidation behavior can be distilled into three regimes, a low temperature regime (RT to 350 C) with a relatively slow oxidation rate that is influenced by moisture, a moderate temperature regime (350-450 C) that is temperature dependent and relies on more or less conventional oxidation growth of a partially protective oxide scale, and high temperature oxidation (> 500 C) where the metal autocatalytically combusts and oxidizes. The particle sizes obtained from these three regimes vary with the finest being from the lowest temperature. It is surmised that the slow growth rate permits significant stress levels to be achieved that help break up the oxides. The intermediate temperatures result in a fairly compact scale that is partially protective and that grows to critical thickness prior to fracturing. The growth rate in this regime may be parabolic or paralinear, depending on the oxidation time and consequently the oxide thickness. The high temperature oxidation is invariant in quiescent or nearly quiescent conditions due to gas blanketing while it accelerates with temperature under flowing conditions. The oxide morphology will generally consist of fine particles (<15 {micro}m), moderately sized particles (15 < x < 250 {micro}m) and large particles (> 250 {micro}m). The particle size ratio is expected to be < 5%, 25%, and 70% for fine, medium and large particles, respectively, for metal temperatures in the 500-600 C range.

Korinko, P.

2009-11-12T23:59:59.000Z

335

4, 23012331, 2004 Nitrogen oxides  

E-Print Network [OSTI]

of nitrogen oxide (NO), nitrogen dioxide (NO2) and ozone (O3) were performed simul- taneously with aerosolACPD 4, 2301­2331, 2004 Nitrogen oxides measurements in an Amazon site A. M. Cordova et al. Title and Physics Discussions Nitrogen oxides measurements in an Amazon site and enhancements associated with a cold

Paris-Sud XI, Université de

336

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

337

THE FALLACY OF UPPER SNAKE FLOW AUGMENTATION THERE IS NO NEED TO DRAIN IDAHO FOR SALMON  

E-Print Network [OSTI]

APPENDIX 1 THE FALLACY OF UPPER SNAKE FLOW AUGMENTATION THERE IS NO NEED TO DRAIN IDAHO FOR SALMON.......................................................................................................................... 7 Historical Stream Flow Records........................................................................................................ 13 Fish Survival and Upper Snake Flow Augmentation

338

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

339

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...

340

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...

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

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

342

Upper Adjoints for Fast Interprocedural Variable Markus MullerOlm 1 and Helmut Seidl 2  

E-Print Network [OSTI]

Upper Adjoints for Fast Inter­procedural Variable Equalities Markus MË?uller­Olm 1 and Helmut Seidl

Müller-Olm, Markus

343

Models for the Configuration and Integrity of Partially Oxidized Fuel Rod Cladding at High Temperatures  

SciTech Connect (OSTI)

Models were designed to resolve deficiencies in the SCDAP/RELAP5/MOD3.2 calculations of the configuration and integrity of hot, partially oxidized cladding. These models are expected to improve the calculations of several important aspects of fuel rod behavior. First, an improved mapping was established from a compilation of PIE results from severe fuel damage tests of the configuration of melted metallic cladding that is retained by an oxide layer. The improved mapping accounts for the relocation of melted cladding in the circumferential direction. Then, rules based on PIE results were established for calculating the effect of cladding that has relocated from above on the oxidation and integrity of the lower intact cladding upon which it solidifies. Next, three different methods were identified for calculating the extent of dissolution of the oxidic part of the cladding due to its contact with the metallic part. The extent of dissolution effects the stress and thus the integrity of the oxidic part of the cladding. Then, an empirical equation was presented for calculating the stress in the oxidic part of the cladding and evaluating its integrity based on this calculated stress. This empirical equation replaces the current criterion for loss of integrity which is based on temperature and extent of oxidation. Finally, a new rule based on theoretical and experimental results was established for identifying the regions of a fuel rod with oxidation of both the inside and outside surfaces of the cladding. The implementation of these models is expected to eliminate the tendency of the SCDAP/RELAP5 code to overpredict the extent of oxidation of the upper part of fuel rods and to underpredict the extent of oxidation of the lower part of fuel rods and the part with a high concentration of relocated material. This report is a revision and reissue of the report entitled, Improvements in Modeling of Cladding Oxidation and Meltdown.

Siefken, L.J.

1999-01-01T23:59:59.000Z

344

Crystal growth, structure and characterizations of a new semiorganic nonlinear optical material-{beta}-Alanine zinc chloride  

SciTech Connect (OSTI)

The title compound, {beta}-alanine zinc chloride-a new semiorganic nonlinear optical crystal was grown by slow evaporation technique. Single crystals of {beta}-alanine zinc chloride have been subjected to X-ray diffraction analysis to determine the crystal structure. The powder X-ray diffractogram of the crystal has also been recorded. The amount of carbon, nitrogen and hydrogen in the crystals was also estimated. Fourier Transform Infrared and Raman spectral measurements have been carried out on the grown crystals in order to identify the functional groups. The presence of hydrogen and carbon in the {beta}-alanine zinc chloride was confirmed by using proton and carbon nuclear magnetic resonance spectral analyses. The percentage of zinc in the crystal was determined by atomic absorption spectroscopy. Optical behavior such as ultraviolet-vis-near infrared transmittance spectrum and second harmonic generation has been investigated. The mechanical strength and thermal behavior of the grown crystal have been analyzed.

Anbuchezhiyan, M. [Department of Physics, Valliammai Engineering College, S.R.M. Nagar, Kattankulathur, Chennai 603203 (India)] [Department of Physics, Valliammai Engineering College, S.R.M. Nagar, Kattankulathur, Chennai 603203 (India); Ponnusamy, S., E-mail: suruponnus@gmail.com [Centre for Material Science and Nano Devices, Department of Physics, SRM University, Kattankulathur, Kanchipuram, Chennai 603203 (India); Muthamizhchelvan, C. [Centre for Material Science and Nano Devices, Department of Physics, SRM University, Kattankulathur, Kanchipuram, Chennai 603203 (India)] [Centre for Material Science and Nano Devices, Department of Physics, SRM University, Kattankulathur, Kanchipuram, Chennai 603203 (India); Sivakumar, K. [Department of Physics, Anna University, Chennai 600 025 (India)] [Department of Physics, Anna University, Chennai 600 025 (India)

2010-08-15T23:59:59.000Z

345

SECTION 34 Table of Contents 34 Upper Columbia Management Plan..............................................................2  

E-Print Network [OSTI]

and formation of the Subbasin Work Teams and the process used to develop and adopt the management plan can34-1 SECTION 34 ­ Table of Contents 34 Upper Columbia Management Plan .........................................................................25 #12;34-2 34 Upper Columbia Management Plan The Upper Columbia Subbasin Management Plan

346

Upper Digestive Disorders Approved by the UHS Patient Education Committee 02/2012  

E-Print Network [OSTI]

Upper Digestive Disorders Approved by the UHS Patient Education Committee 02/2012 Revised 02/08/12 Page 1 of 2 Upper Digestive Tract Anatomy Esophagus: A long muscular tube in the chest area occurs in the duodenum. Upper Digestive Disorders Reflux with Esophagitis: The flowing back (or reflux

Yener, Aylin

347

Penetration of solar radiation in the upper ocean: A numerical model for oceanic and coastal waters  

E-Print Network [OSTI]

Penetration of solar radiation in the upper ocean: A numerical model for oceanic and coastal waters in the upper ocean, the vertical distribution of solar radiation (ESR) in the shortwave domain plays (2005), Penetration of solar radiation in the upper ocean: A numerical model for oceanic and coastal

Lee, Zhongping

348

Oxidative stress in pied flycatcher (Ficedula hypoleuca) nestlings from metal contaminated environments in northern Sweden  

SciTech Connect (OSTI)

Metals have been shown to induce oxidative stress in animals. One of the most metal polluted terrestrial environments in Sweden is the surroundings of a sulfide ore smelter plant located in the northern part of the country. Pied flycatcher nestlings (Ficedula hypoleuca) that grew up close to the industry had accumulated amounts of arsenic, cadmium, mercury, lead, iron and zinc in their liver tissue. The aim of this study was to investigate if pied flycatcher nestlings in the pollution gradient of the industry were affected by oxidative stress using antioxidant molecules and enzyme activities. The antioxidant assays were also evaluated in search for useful biomarkers in pied flycatchers. This study indicated that nestlings in metal contaminated areas showed signs of oxidative stress evidenced by up regulated hepatic antioxidant defense given as increased glutathione reductase (GR) and catalase (CAT) activities and slightly but not significantly elevated lipid peroxidation and glutathione-S-transferase (GST) activities. Stepwise linear regression indicated that lipid peroxidation and CAT activities were influenced mostly by iron, but iron and lead influenced the CAT activity to a higher degree. Positive relationships were found between GST and lead as well as GR activities and cadmium. We conclude that GR, CAT, GST activities and lipid peroxidation levels may function as useful biomarkers for oxidative stress in free-living pied flycatcher nestlings exposed to metal contaminated environments.

Berglund, A.M.M. [Department of Ecology and Environmental Science, Umea University, SE-901 87 Umea (Sweden)], E-mail: asa.berglund@emg.umu.se; Sturve, J.; Foerlin, L. [Department of Zoology, Goeteborg University, Box 463, SE-405 30 Gothenburg (Sweden); Nyholm, N.E.I. [Department of Ecology and Environmental Science, Umea University, SE-901 87 Umea (Sweden)

2007-11-15T23:59:59.000Z

349

Millisecond Oxidation of Alkanes  

Broader source: Energy.gov [DOE]

This factsheet describes a project whose goal is to commercialize a production process for propylene and acrylic acid from propane using a catalytic auto-thermal oxydehydrogenation process operating at short contact times. Auto-thermal oxidation for conversion of propane to propylene and acrylic acid promises energy savings of 20 trillion Btu per year by 2020. In addition to reducing energy consumption, this technology can reduce manufacturing costs by up to 25 percent, and reduce a variety of greenhouse gas emissions.

350

Mima mound grasslands of the upper coastal prairie of Texas  

E-Print Network [OSTI]

21 28 31 34 44 47 49 52 55 57 71 74 76 79 87 94 LlST OF TABLES Table Physical and chemical soil characteristics for topographic variations within 3 soil complexes of the upper Coastal Prairie, Texas Page 27 Average absolute... ~ ' ~ ~ ~ ~ ~ O O 8 z z O V) CO iU CC LU O D IZ 31 The landscape had less slope than on Aris-like stands. Intermounds on Crowley/Edna-like soils appear nearly level. Results of physical and chemical analysis were very similar to Aris-like soils...

Butler, Arlene Camille

1979-01-01T23:59:59.000Z

351

Biostratigraphy of the upper cretaceous Austin Group, Travis County, Texas  

E-Print Network [OSTI]

Formation is on the San Gabriel River at the Jonah-Hutto roadcrossing in Williamson County. At the type locality, the upper 35 feet of the Jonah is exposed; the lower 50 feet is exposed two-thirds of a mile upstream. 1he Jonah Formation ranges fr om 120... Forma- tion at Vinson Creek is 25 feet thick and the limestone beds are skeletal packstones. The thinning of the Jonah Formation is caused by the positive influence of the San Marcos Arch during deposition. 20 The contact between the Jonah Formation...

Harris, William Maurice

1982-01-01T23:59:59.000Z

352

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

353

Alcator C-Mod Upper Divertor Cryopump Quarterly Progress Report  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth (AOD)ProductssondeadjustsondeadjustAbout theOFFICE OF RESEARCH ANDCONTACTS GeorgeLand8 ResearchUpper Divertor

354

Metal accumulation in terrestrial pulmonates at a lead/zinc smelter site in Arnoldstein, Austria  

SciTech Connect (OSTI)

Recently,the suitability of terrestrial gastropods was reviewed as quantitative indicator organisms for environmental metal pollution. The peculiar metal accumulation capabilities in molluscs have been known in detail for decades, but {open_quotes}only few data are available for terrestrial pulmonates{close_quotes}. Furthermore, data are restricted to only a few species, and despite similarities in metabolic pathways, species-specific properties in metal-budget strategies exist. Information concerning the potential range of metal burden in these animals form the field are, therefore, of ecophysical relevance. Snails satisfy a basic demand as quantitative indicators of the bioavailable fraction of terrestrial metal pollution. In this study concentrations of lead, cadmium, copper and zinc were measured in tissues of 4 species of snails collected in the vicinity of a lead/zinc smelter with a long history of pollution. 23 refs., 3 figs., 1 tab.

Rabitsch, W.B. [Univ. of Vienna, Vienna (Austria)] [Univ. of Vienna, Vienna (Austria)

1996-05-01T23:59:59.000Z

355

Characterization of new corrosion resistant nickel-zinc-phosphorus alloys obtained by electrodeposition  

SciTech Connect (OSTI)

The authors discuss the electrodeposition of a family of NiZnP coatings studied at a rotating cylinder electrode by varying the temperature (45{sup 0}-80{sup 0}C) and the applied current density (0.03-0.95 A/cm/sup 2/). Two of the coatings were nickel-rich, two were zinc-rich, and a fifth coating had approximately equal amounts of Ni and Zn. The coatings were characterized using SEM/EDX and Auger depth profile techniques. A Ni-rich alloy with a supersaturated amount of zinc and the approximate composition 59Ni-39Zn-2P was obtained at all temperatures in the high speed electrodeposition current density range 0.6-1.0 A/cm/sup 2/. The supersaturated alloy could be deposited at current efficiencies higher than 80% at all temperatures. The corrosion rate of this coating was the lowest among the various NiZnP coatings.

Swathirajan, S.; Mikhail, Y.M. (Physical Chemistry Dept., General Motors Research Labs., Warren, MI (US))

1989-08-01T23:59:59.000Z

356

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

357

Oxidative stress and oxidative damage in chemical carcinogenesis  

SciTech Connect (OSTI)

Reactive oxygen species (ROS) are induced through a variety of endogenous and exogenous sources. Overwhelming of antioxidant and DNA repair mechanisms in the cell by ROS may result in oxidative stress and oxidative damage to the cell. This resulting oxidative stress can damage critical cellular macromolecules and/or modulate gene expression pathways. Cancer induction by chemical and physical agents involves a multi-step process. This process includes multiple molecular and cellular events to transform a normal cell to a malignant neoplastic cell. Oxidative damage resulting from ROS generation can participate in all stages of the cancer process. An association of ROS generation and human cancer induction has been shown. It appears that oxidative stress may both cause as well as modify the cancer process. Recently association between polymorphisms in oxidative DNA repair genes and antioxidant genes (single nucleotide polymorphisms) and human cancer susceptibility has been shown.

Klaunig, James E., E-mail: jklauni@indiana.edu; Wang Zemin; Pu Xinzhu; Zhou Shaoyu

2011-07-15T23:59:59.000Z

358

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

359

Visible and Infrared Optical Design for the ITER Upper Ports  

SciTech Connect (OSTI)

This document contains the results of an optical design scoping study of visible-light and infrared optics for the ITER upper ports, performed by LLNL under contract for the US ITER Project Office. ITER is an international collaboration to build a large fusion energy tokamak with a goal of demonstrating net fusion power for pulses much longer than the energy confinement time. At the time of this report, six of the ITER upper ports are planned to each to contain a camera system for recording visible and infrared light, as well as other diagnostics. the performance specifications for the temporal and spatial resolution of this system are shown in the Section II, Functional Specifications. They acknowledge a debt to Y. Corre and co-authors of the CEA Cadarache report ''ITER wide-angle viewing and thermographic and visible system''. Several of the concepts used in this design are derived from that CEA report. The infrared spatial resolution for optics of this design is diffraction-limited by the size of the entrance aperture, at lower resolution than listed in the ITER diagnostic specifications. The size of the entrance aperture is a trade-off between spatial resolution, optics size in the port, and the location of relay optics. The signal-to-noise ratio allows operation at the specified time resolutions.

Lasnier, C; Seppala, L; Morris, K; Groth, M; Fenstermacher, M; Allen, S; Synakowski, E; Ortiz, J

2007-03-01T23:59:59.000Z

360

Zinc ferrite nanoparticles as MRI contrast agentsw Carlos Ba rcena,a  

E-Print Network [OSTI]

Zinc ferrite nanoparticles as MRI contrast agentsw Carlos Ba´ rcena,a Amandeep K. Sra,a Girija S, a series of spinel-structured ferrites, MFe2O4 (M = Mn2+ , Fe2+ , Co2+ , Ni2+ ), were reported as novel MRI.e., Mn2+ occupies both A and B sites), whereas the other metal ferrites have an inverse spinel structure

Gao, Jinming

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

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

362

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

363

Interactions of Silicate Ions with Zinc(II) and Aluminum(III) in Alkaline Aqueous Solution  

E-Print Network [OSTI]

Interactions of Silicate Ions with Zinc(II) and Aluminum(III) in Alkaline Aqueous Solution Michel R 16, 2005 We present 29 Si, 27 Al, and 67 Zn NMR evidence to show that silicate ions in alkaline, with aluminate (Al(OH)4 - ). Zincate reacts with monomeric silicate at pH 14-15 to form [(HO)O2Si-O-Zn(OH)3

Sahai, Nita

364

Flexographically Printed Rechargeable Zinc-based Battery for Grid Energy Storage  

E-Print Network [OSTI]

corrosion resistant to an oxidizing potential and inexpensive, are widely used as the current collector for the cathode in lithium

Wang, Zuoqian

2013-01-01T23:59:59.000Z

365

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

366

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

367

ARM - Oxides of Nitrogen  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc Documentation RUC : XDCResearchWarmingMethane BackgroundFacilityOther Aircraft CampaignsOxides

368

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

369

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

370

Continuous lengths of oxide superconductors  

DOE Patents [OSTI]

A layered oxide superconductor prepared by depositing a superconductor precursor powder on a continuous length of a first substrate ribbon. A continuous length of a second substrate ribbon is overlaid on the first substrate ribbon. Sufficient pressure is applied to form a bound layered superconductor precursor powder between the first substrate ribbon and the second substrate ribbon. The layered superconductor precursor is then heat treated to establish the oxide superconducting phase. The layered oxide superconductor has a smooth interface between the substrate and the oxide superconductor.

Kroeger, Donald M. (Knoxville, TN); List, III, Frederick A. (Andersonville, TN)

2000-01-01T23:59:59.000Z

371

Buried oxide layer in silicon  

DOE Patents [OSTI]

A process for forming Silicon-On-Insulator is described incorporating the steps of ion implantation of oxygen into a silicon substrate at elevated temperature, ion implanting oxygen at a temperature below 200.degree. C. at a lower dose to form an amorphous silicon layer, and annealing steps to form a mixture of defective single crystal silicon and polycrystalline silicon or polycrystalline silicon alone and then silicon oxide from the amorphous silicon layer to form a continuous silicon oxide layer below the surface of the silicon substrate to provide an isolated superficial layer of silicon. The invention overcomes the problem of buried isolated islands of silicon oxide forming a discontinuous buried oxide layer.

Sadana, Devendra Kumar (Pleasantville, NY); Holland, Orin Wayne (Lenoir, TN)

2001-01-01T23:59:59.000Z

372

Free Energies of Dilute Bose gases: upper bound  

E-Print Network [OSTI]

We derive a upper bound on the free energy of a Bose gas system at density $\\rho$ and temperature $T$. In combination with the lower bound derived previously by Seiringer \\cite{RS1}, our result proves that in the low density limit, i.e., when $a^3\\rho\\ll 1$, where $a$ denotes the scattering length of the pair-interaction potential, the leading term of $\\Delta f$ the free energy difference per volume between interacting and ideal Bose gases is equal to $4\\pi a (2\\rho^2-[\\rho-\\rhoc]^2_+)$. Here, $\\rhoc(T)$ denotes the critical density for Bose-Einstein condensation (for the ideal gas), and $[\\cdot ]_+$ $=$ $\\max\\{\\cdot, 0\\}$ denotes the positive part.

Jun Yin

2010-12-19T23:59:59.000Z

373

Depositional environments of Pennsylvanian Upper Strawn Group in McCulloch and San Saba Counties, Texas  

SciTech Connect (OSTI)

Upper Strawn Group (Desmoinesean) represents a transition to fluvial facies from progradational deltaic facies. The lower part of the upper Strawn is composed mostly of horizontally bedded, fine-grained sandstones and shales of a distal delta-front origin. These sandstones and shales exhibit foreset bed dips of up to 15/sup 0/. In addition to the dipping foreset beds, the delta-front facies on occasion contain small listric normal faults, resulting from periodic higher rates of sedimentation. The middle parts of the upper Strawn consist predominantly of massive, fine to medium-grained, mature sandstones which represent distributary-mouth-bar deposits, as well as other proximal delta-front deposits such as distributary channels. The upper part of the upper Strawn consists of fluvial trough cross-bedded sandstones and chert-pebble conglomerates. These overlie the deltaic facies and indicate the final stages of upper Strawn deposition. The upper Strawn is overlain by the Adams Branch limestone and shales which represent marine transgression and subsequent shallow-marine deposition. The upper Strawn Group in McCulloch and San Saba Counties, Texas, represents continued filling of the Fort Worth basin during Desmoinesean time. The upper Strawn overlies the lower Strawn, an older, deeper water facies, in most parts of the study area. The upper Strawn overlies the Atokan age Marble Falls Limestone in an isolated section of the study area due to its position there on the Concho arch.

Jamieson, W.H. Jr.

1983-03-01T23:59:59.000Z

374

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

375

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.Tubular Solid Oxide Fuel Cell Technology, U.S. Department ofOxide Films for Solid Oxide Fuel Cell Applications by Jason

Nicholas, Jason.D.

2007-01-01T23:59:59.000Z

376

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

377

METHANE OXIDATION (AEROBIC) Helmut Brgmann  

E-Print Network [OSTI]

METHANE OXIDATION (AEROBIC) Helmut Bürgmann Eawag, Swiss Federal Institute of Aquatic Science and Technology, Kastanienbaum, Switzerland Synonyms Methanotrophy Definition Methane oxidation is a microbial metabolic process for energy generation and carbon assimilation from methane that is carried out by specific

Wehrli, Bernhard

378

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

379

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

380

P-31 / Schlott P-31: Nodule Formation on Indium-Oxide Tin-Oxide  

E-Print Network [OSTI]

P-31 / Schlott P-31: Nodule Formation on Indium-Oxide Tin-Oxide Sputtering Targets M. Schlott, M from indium-oxide tin-oxide (ITO) targets [1]. Unfor- tunately, black growths, or nodules, commonly isostatic pressing partly reduced powder mixtures of 90 wt.% indium-oxide and 10 wt.% tin-oxide [4

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

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

382

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...

383

Ethanol oxidation on metal oxide-supported platinum catalysts  

SciTech Connect (OSTI)

Ethanol is a renewable fuel that can be used as an additive to gasoline (or its substitute) with the advantage of octane enhancement and reduced carbon monoxide exhaust emissions. However, on Ethanol is a renewable fuel that can be used as an additive to gasoline (or its substitute) with the advantage of octane enhancement and reduced carbon monoxide exhaust emissions. However, on the standard three-way catalysts, the conversion of unburned ethanol is low because both ethanol and some of its partially oxidized derivatives are highly resistant to oxidation. A combination of first-principles density-functional theory (DFT) based calculations and in-situ diffuse reflectance infrared spectroscopy (DRIFTS) analysis was applied to uncover some of the fundamental phenomena associated with ethanol oxidation on Pt containing catalysts. In particular, the objective was to analyze the role of the oxide (i.e., ?-Al2O3 or SiO2) substrate on the ethanol oxidation activity. The results showed that Pt nanoparticles trap and accumulate oxygen at their surface and perimeter sites and play the role of “stoves” that burn ethanol molecules and their partially oxidized derivatives to the “final” products. The ?-Al2O3 surfaces provided higher mobility of the fragments of ethanol molecules than the SiO2 surface and hence increased the supply rate of these objects to the Pt particles. This will in turn produce a higher conversion rate of unburned ethanol.and some of its partially oxidized derivatives are highly resistant to oxidation. A combination of first-principles density-functional theory (DFT) based calculations and in-situ diffuse reflectance infrared spectroscopy (DRIFTS) analysis was applied to uncover some of the fundamental phenomena associated with ethanol oxidation on Pt containing catalysts. In particular, the objective was to analyze the role of the oxide (i.e., ?-Al2O3 or SiO2) substrate on the ethanol oxidation activity. The results showed that Pt nanoparticles trap and accumulate oxygen at their surface and perimeter sites and play the role of “stoves” that burn ethanol molecules and their partially oxidized derivatives to the “final” products. The ?-Al2O3 surfaces provided higher mobility of the fragments of ethanol molecules than the SiO2 surface and hence increased the supply rate of these objects to the Pt particles. This will in turn produce a higher conversion rate of unburned ethanol.

L. M. Petkovic 090468; Sergey N. Rashkeev; D. M. Ginosar

2009-09-01T23:59:59.000Z

384

Stratigraphic cyclicity and reservoir heterogeneity within upper San Andres and Grayburg strata (upper Permian-Guadalupian), Maljamar field, Se New Mexico  

E-Print Network [OSTI]

of upper San Andres strata. Cavernous porosity was later plugged with massive anhydrite, resulting in the degradation of reservoir quality. In the overlying Grayburg Formation, cycles consist of mixed sandstone and shallowwater carbonate facies...

Modica, Christopher James

1997-01-01T23:59:59.000Z

385

Chapter 6: Thallium-Oxide Superconductors  

SciTech Connect (OSTI)

This chapter has 2 sections titled: (1) Spray-Deposited, TI-Oxide Films, and (2) Electrodeposited Ti-Oxide Superconductors.

Bhattacharya, R. N.

2010-01-01T23:59:59.000Z

386

Precise Application of Transparent Conductive Oxide Coatings...  

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

Precise Application of Transparent Conductive Oxide Coatings for Flat Panel Displays and Photovoltaic Cells Technology available for licensing: New transparent conducting oxide...

387

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

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

doi:10.1016/j.gca.2005.05.019 Effects of in situ remediation on the speciation and bioavailability of zinc in a smelter  

E-Print Network [OSTI]

of zinc in a smelter contaminated soil M. NACHTEGAAL,1, * M. A. MARCUS,2 J. E. SONKE,3 J. VANGRONSVELD,4 K on the speciation of zinc (Zn) and its relation to the mobility and bioavailablity of this element in a smelter% to 50% of Zn was present in smelter related minerals (willemite, hemimorphite or gahnite), while 50

Sparks, Donald L.

390

Public health assessment for Sandoval Zinc Company, Sandoval, Marion County, Illinois, Region 5: CERCLIS number ILD053980454. Final report  

SciTech Connect (OSTI)

The Sandoval Zinc site occupies about 13 acres southeast of Sandoval in Marion County, Illinois. It is an abandoned primary and secondary zinc smelter that was next to a coal mining operation. Smelting waste may have been transported off the site and used as fill in Sandoval and other nearby communities. Airborne emissions occurred during regular operations and accidental fires. Surface water runoff transported wastes from the site into adjacent ditches, creeks, ponds, and farm properties. Overall, the Sandoval Zinc site poses no apparent public health hazard to most of the population in Sandoval. The site may be a public health hazard to preschool children with excessive hand-to-mouth activity exposed to residential surface soils with high levels of lead. However, blood sample results from children in a day care near the site did not show elevated levels of lead.

Not Available

1999-06-10T23:59:59.000Z

391

Excitations of {sup 1}P levels of zinc by electron impact on the ground state  

SciTech Connect (OSTI)

We present results of a joint theoretical and experimental investigation of electron scattering from the 4s{sup 2} {sup 1}S ground state of zinc. The 4s4p {sup 1}P{sup o} and 4s5p {sup 1}P{sup o} differential cross sections were measured at scattering angles between 10 degree sign and 150 degree sign and electron-energies of 15, 20, 25, 40, and 60 eV. Corresponding convergent close-coupling calculations have been performed and are compared with experiment.

Fursa, Dmitry V.; Bray, Igor [Centre for Atomic, Molecular and Surface Physics, Murdoch University, Perth 6150 (Australia); Panajotovic, R.; Sevic, D.; Pejcev, V.; Marinkovic, B.P. [Institute of Physics, Belgrade, P.O. Box 68, 11080 Belgrade (Serbia and Montenegro); Filipovic, D.M. [Institute of Physics, Belgrade, P.O. Box 68, 11080 Belgrade (Serbia and Montenegro); Faculty of Physics, University of Belgrade, 11001 Belgrade (Serbia and Montenegro)

2005-07-15T23:59:59.000Z

392

Photoelectrical, optical, and transport properties of poly (3-hexylthiophene)-zinc sulfide hybrid nanocomposites  

SciTech Connect (OSTI)

We have synthesized nanocomposites of poly (3-hexylthiophene) (P3HT) at 273?K and zinc sulfide (ZnS) nanoparticles at 353?K by the chemical route method. The synthesis of these nanocomposites is confirmed by UV-visible, high resolution transmission electron microscope, and Raman spectroscopy. We have measured photocurrent of P3HT using 50?W tungsten lamp. The photoconductivity increases with concentration of ZnS in P3HT-ZnS composite. Temperature dependent dc conductivity of P3HT and its nanocomposites have been thoroughly investigated in light of Mott's variable range hopping.

Singh, Beerandra; Kaur, Amarjeet, E-mail: amarkaur@physics.du.ac.in [Department of Physics and Astrophysics, University of Delhi, Delhi-110007 (India)

2014-08-14T23:59:59.000Z

393

Bitumen accumulation in Grosmont platform complex, Upper Devonian, Alberta, Canada  

SciTech Connect (OSTI)

The Upper Devonian Grosmont Formation, a broad carbonate platform complex in Alberta, Canada, contains an estimated 300 billion bbl of bitumen. It has been suggested that these vast reserves are related to Lower Cretaceous Athabasca oil sands. Detailed gas chromatographic-mass spectrometric studies of a wide range of biologic marker compounds confirm this suggestion. The Grosmont Formation contains bitumen of similar maturity and source to the Athabasca deposit, but it has been subjected to a greater degree of biodegradation and water washing, possibly as a result of its reservoir rock characteristics. The difference in the degree of biodegradation is manifested by the absence of bicyclic terpanes and by the reduced concentrations of the C/sub 30/ and the 22R epimers of the extended hopanes in the Grosmont bitumen. Also, the greater degree of water washing of the Grosmont bitumen is inferred from the observed distribution of the bicyclic, tricyclic, and tetracyclic terpenoid sulfides, which shows a characteristic loss of the lower molecular weight members in the carbonate bitumen. The correlation established here between the two deposits suggests that if the precursor oil has indeed undergone long-distance migration, the Paleozoic carbonates could have acted as a path for migration. Finally, the observed distribution of steranes in the Grosmont bitumen corresponds to the suggestion that the Mannville Group shales were not the major source rocks of the oil-sand and carbonate bitumen accumulations of northern Alberta. 11 figures, 6 tables.

Hoffmann, C.F.; Strausz, O.P.

1986-09-01T23:59:59.000Z

394

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

395

Selective catalytic reduction system and process for treating NOx emissions using a zinc or titanium promoted palladium-zirconium catalyst  

SciTech Connect (OSTI)

A process and system (18) for reducing NO.sub.x in a gas using hydrogen as a reducing agent is provided. The process comprises contacting the gas stream (29) with a catalyst system (38) comprising sulfated zirconia washcoat particles (41), palladium, a pre-sulfated zirconia binder (44), and a promoter (45) comprising at least one of titanium, zinc, or a mixture thereof. The presence of zinc or titanium increases the resistance of the catalyst system to a sulfur and water-containing gas stream.

Sobolevskiy, Anatoly (Orlando, FL); Rossin, Joseph A. (Columbus, OH); Knapke, Michael J. (Columbus, OH)

2011-08-02T23:59:59.000Z

396

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

397

Upper mantle structure beneath the Caribbean-South American plate boundary from surface wave tomography  

E-Print Network [OSTI]

Upper mantle structure beneath the Caribbean-South American plate boundary from surface wave velocity structure of the crust and upper mantle of the Caribbean-South American boundary region American continental lithosphere, the Venezuelan archipelago, and the Caribbean oceanic lithosphere

Niu, Fenglin

398

Simulations of water isotope abundances in the upper troposphere and lower stratosphere and implications  

E-Print Network [OSTI]

fractionation processes. The results indicate that water substance in the upper troposphere does not follow a Rayleigh distillation model due to the presence of condensed phase water. Stratospheric abundances and climate of the upper troposphere and lower stratosphere (UT/LS). It is broadly known that most of the air

Gettelman, Andrew

399

FLUCTUATION IN TRAP-NET CATCHES IN THE UPPER MISSISSIPPI RIVER  

E-Print Network [OSTI]

FLUCTUATION IN TRAP-NET CATCHES IN THE UPPER MISSISSIPPI RIVER if; Marine Biological LabofdiuryKay, Secretary Fish and Wildlife Service, Albert M. Day, Director FLUCTUATION IN TRAP NET CATCHES IN THE UPPER Gear used 3 Methods 5 Statistical considerations 5 Season trends in catch of trap nets 6 Black crappie

400

Novel 16-Channel Receive Coil Array for Accelerated Upper Airway MRI at 3 Tesla  

E-Print Network [OSTI]

Novel 16-Channel Receive Coil Array for Accelerated Upper Airway MRI at 3 Tesla Yoon-Chul Kim,1 a novel 16-channel 3 Tesla receive coil that is highly sensitive to the human upper airway and investigate on articulatory timing may illuminate the general question of how language-specific knowledge is related to motor

Southern California, University of

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

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

402

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.

403

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.

404

PID Admittance Control for an Upper Limb Exoskeleton Wen Yu, Jacob Rosen, Xiaoou Li  

E-Print Network [OSTI]

PID Admittance Control for an Upper Limb Exoskeleton Wen Yu, Jacob Rosen, Xiaoou Li Abstract PID control. Three force sensors in the upper-level send desired trajectories to the lower, a model-free PID type admittance control is applied, whose parameters can be designed by human impedance

Rosen, Jacob

405

Earth Planets Space, 64, 113120, 2012 Upper ionosphere of Mars is not axially symmetrical  

E-Print Network [OSTI]

Earth Planets Space, 64, 113­120, 2012 Upper ionosphere of Mars is not axially symmetrical E to the ionosphere providing momentum and energy transfer to the upper layers of the ionospheric plasma. While dependence rather closely follow the Chapman model (Gurnett et al., 2008; Morgan et al., 2008; Withers, 2009

Gurnett, Donald A.

406

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

407

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

408

Studio optics: Adapting interactive engagement pedagogy to upper-division physics  

E-Print Network [OSTI]

Studio optics: Adapting interactive engagement pedagogy to upper-division physics Christopher M describe the development and implementation of a Studio Optics course for upper-division physics majors course in optics at the junior-senior and first year graduate student level that incorporates the methods

Zollman, Dean

409

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

410

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

411

Nanostructured Metal Oxide Anodes (Presentation)  

SciTech Connect (OSTI)

This summarizes NREL's FY09 battery materials research activity in developing metal oxide nanostructured anodes to enable high-energy, durable and affordable li-ion batteries for HEVs and PHEVs.

Dillon, A. C.; Riley, L. A.; Lee, S.-H.; Kim, Y.-H.; Ban, C.; Gillaspie, D. T.; Pesaran, A.

2009-05-01T23:59:59.000Z

412

Thermal oxidation procedure PREPARATION........................................................................................................................................... 2  

E-Print Network [OSTI]

procedure - 2 - Preparation. The preparation procedure sets up the power, gas supplies, cooling water, (DI to check all the supplies. Cooling water Gas supplies Routing DI water for wet oxidation We start........................................................................................................................................... 2 Step 1 Turn on the cooling water

Hochberg, Michael

413

Oxides having high energy densities  

DOE Patents [OSTI]

Certain disclosed embodiments generally relate to oxide materials having relatively high energy and/or power densities. Various aspects of the embodiments are directed to oxide materials having a structure B.sub.i(M.sub.jY.sub.k)O.sub.2, for example, a structure Li.sub.j(Ni.sub.jY.sub.k)O.sub.2 such as Li(Ni.sub.0.5Mn.sub.0.5)O.sub.2. In this structure, Y represents one or more atoms, each independently selected from the group consisting of alkaline earth metals, transition metals, Group 14 elements, Group 15, or Group 16 elements. In some embodiments, such an oxide material may have an O3 crystal structure, and/or a layered structure such that the oxide comprises a plurality of first, repeating atomic planes comprising Li, and a plurality of second, repeating atomic planes comprising Ni and/or Y.

Ceder, Gerbrand; Kang, Kisuk

2013-09-10T23:59:59.000Z

414

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

415

Synthesis of nickel–zinc ferrite magnetic nanoparticle and dye degradation using photocatalytic ozonation  

SciTech Connect (OSTI)

Graphical abstract: Display Omitted Highlights: ? Nickel–zinc ferrite magnetic nanoparticle (NZFMN) was synthesized and characterized. ? Dye degradation by photocatalytic ozonation using NZFMN was studied. ? Formate, acetate and oxalate were detected as dominant dye degradation aliphatic intermediates. ? Nitrate, sulfate and chloride ions were detected as mineralization products of dyes. ? NZFMN was an effective magnetic nanocatalyst to degrade dyes. -- Abstract: In this paper, nickel–zinc ferrite magnetic nanoparticle (NZFMN) was synthesized and its dye degradation ability using photocatalytic ozonation was investigated. The NZFMN was characterized by X-ray diffraction (XRD), scanning electron microscopic (SEM), Fourier transforms infrared (FTIR) and alternative gradient force magnetometer (AGFM). Reactive Red 198 (RR198) and Direct Green 6 (DG6) were used as dye models. UV–vis and ion chromatography (IC) analyses were employed to study dye degradation. The effects of operational parameters on decolorization such as NZFMN dosage, dye concentration, salt and pH were studied. RR198 and DG6 were completely decolorized (100%) by photocatalytic ozonation using NZFMN. Formate, acetate and oxalate anions were detected as dominant aliphatic intermediates. Nitrate, sulfate and chloride ions were detected as mineralization products of dyes. Results showed that the photocatalytic ozonation using NZFMN was a very effective method for dye degradation.

Mahmoodi, Niyaz Mohammad, E-mail: mahmoodi@icrc.ac.ir [Department of Environmental Research, Institute for Color Science and Technology, Tehran (Iran, Islamic Republic of); Bashiri, Marziyeh; Moeen, Shirin Jebeli [Department of Environmental Research, Institute for Color Science and Technology, Tehran (Iran, Islamic Republic of)] [Department of Environmental Research, Institute for Color Science and Technology, Tehran (Iran, Islamic Republic of)

2012-12-15T23:59:59.000Z

416

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

417

Development of Zinc/Bromine Batteries for Load-Leveling Applications: Phase 2 Final Report  

SciTech Connect (OSTI)

This report documents Phase 2 of a project to design, develop, and test a zinc/bromine battery technology for use in utility energy storage applications. The project was co-funded by the U.S. Department of Energy Office of Power Technologies through Sandia National Laboratories. The viability of the zinc/bromine technology was demonstrated in Phase 1. In Phase 2, the technology developed during Phase 1 was scaled up to a size appropriate for the application. Batteries were increased in size from 8-cell, 1170-cm{sup 2} cell stacks (Phase 1) to 8- and then 60-cell, 2500-cm{sup 2} cell stacks in this phase. The 2500-cm{sup 2} series battery stacks were developed as the building block for large utility battery systems. Core technology research on electrolyte and separator materials and on manufacturing techniques, which began in Phase 1, continued to be investigated during Phase 2. Finally, the end product of this project was a 100-kWh prototype battery system to be installed and tested at an electric utility.

CLARK,NANCY H.; EIDLER,PHILLIP

1999-10-01T23:59:59.000Z

418

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

419

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

1949-01-01T23:59:59.000Z

420

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

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

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

422

Metal oxide nanostructures with hierarchical morphology  

DOE Patents [OSTI]

The present invention relates generally to metal oxide materials with varied symmetrical nanostructure morphologies. In particular, the present invention provides metal oxide materials comprising one or more metallic oxides with three-dimensionally ordered nanostructural morphologies, including hierarchical morphologies. The present invention also provides methods for producing such metal oxide materials.

Ren, Zhifeng (Newton, MA); Lao, Jing Yu (Saline, MI); Banerjee, Debasish (Ann Arbor, MI)

2007-11-13T23:59:59.000Z

423

Millisecond Oxidation of Alkanes  

SciTech Connect (OSTI)

This project was undertaken in response to the Department of Energy's call to research and develop technologies 'that will reduce energy consumption, enhance economic competitiveness, and reduce environmental impacts of the domestic chemical industry.' The current technology at the time for producing 140 billion pounds per year of propylene from naphtha and Liquified Petroleum Gas (LPG) relied on energy- and capital-intensive steam crackers and Fluidized Catalytic Cracking (FCC) units. The propylene is isolated from the product stream in a costly separation step and subsequently converted to acrylic acid and other derivatives in separate production facilities. This project proposed a Short Contact Time Reactor (SCTR)-based catalytic oxydehydrogenation process that could convert propane to propylene and acrylic acid in a cost-effective and energy-efficient fashion. Full implementation of this technology could lead to sizeable energy, economic and environmental benefits for the U. S. chemical industry by providing up to 45 trillion BTUs/year, cost savings of $1.8 billion/year and a combined 35 million pounds/year reduction in environmental pollutants such as COx, NOx, and SOx. Midway through the project term, the program directive changed, which approval from the DOE and its review panel, from direct propane oxidation to acrylic acid at millisecond contact times to a two-step process for making acrylic acid from propane. The first step was the primary focus, namely the conversion of propane to propylene in high yields assisted by the presence of CO2. The product stream from step one was then to be fed directly into a commercially practiced propylene-to-acrylic acid tandem reactor system.

Scott Han

2011-09-30T23:59:59.000Z

424

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

425

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

426

Research, development, and demonstration of nickel-zinc batteries for electric vehicle propulsion. Annual report for 1980  

SciTech Connect (OSTI)

Progress in developing nickel-zinc batteries for propelling electric vehicles is reported. Information is included on component design, battery fabrication, and module performance testing. Although full scale hardware performance has fallen short of the contract cycle life goals, significant progress has been made to warrant further development. (LCL)

Not Available

1981-03-01T23:59:59.000Z

427

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

428

SPERM FORMATION IN ZINC-DEFICIENT RATS Marie-Claire ORGEBIN-CRIST M. FREEMAN G. H. BARNEY  

E-Print Network [OSTI]

libitum from plastic bottles. Starting on the sixth day, the daily food intake of the pair-fed group supplemented with ZnS04. !H20 to provide an additional 30 p.p.m. of zinc. All animals were housed in plastic cages designed and made locally$. Diet was fed in plastic cups and deionized water was provided ad

Paris-Sud XI, Université de

429

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

430

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

431

Proof of concept of a zinc-silver battery for the extraction of energy from a concentration difference.  

E-Print Network [OSTI]

solution. The cyclic operation allows us to extract a surplus of energy, at the expense of the free energyProof of concept of a zinc-silver battery for the extraction of energy from a concentration power (SGP) is the production of renewable and clean power from naturally available water reservoirs

Carati, Andrea

432

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.

433

Spatially resolved characterization of biogenic manganese oxide production within a bacterial biofilm  

E-Print Network [OSTI]

copper, zinc, lead, and arsenic by iron and manganese oxyhydroxide coatings on plankton in lakes polluted with mine and smelter

Toner, Brandy; Fakra, Sirine; Villalobos, Mario; Warwick, Tony; Sposito, Garrison

2004-01-01T23:59:59.000Z

434

Prolactin receptor attenuation induces zinc pool redistribution through ZnT2 and decreases invasion in MDA-MB-453 breast cancer cells  

SciTech Connect (OSTI)

Prolactin receptor (PRL-R) activation regulates cell differentiation, proliferation, cell survival and motility of breast cells. Prolactin (PRL) and PRL-R over-expression are strongly implicated in breast cancer, particularly contributing to tumor growth and invasion in the more aggressive estrogen-receptor negative (ER?) disease. PRL-R antagonists have been suggested as potential therapeutic agents; however, mechanisms through which PRL-R antagonists exert their actions are not well-understood. Zinc (Zn) is a regulatory factor for over 10% of the proteome, regulating critical cell processes such as proliferation, cell signaling, transcription, apoptosis and autophagy. PRL-R signaling regulates Zn metabolism in breast cells. Herein we determined effects of PRL-R attenuation on cellular Zn metabolism and cell function in a model of ER-, PRL-R over-expressing breast cancer cells (MDA-MB-453). PRL-R attenuation post-transcriptionally increased ZnT2 abundance and redistributed intracellular Zn pools into lysosomes and mitochondria. ZnT2-mediated lysosomal Zn sequestration was associated with reduced matrix metalloproteinase 2 (MMP-2) activity and decreased invasion. ZnT2-mediated Zn accumulation in mitochondria was associated with increased mitochondrial oxidation. Our results suggest that PRL-R antagonism in PRL-R over-expressing breast cancer cells may reduce invasion through the redistribution of intracellular Zn pools critical for cellular function. - Highlights: • PRL-R attenuation increased ZnT2 expression. • PRL-R attenuation increased lysosomal and mitochondrial Zn accumulation. • PRL-R attenuation decreased MMP-2 and invasion. • PRL-R antagonists may modulate lysosomal and mitochondrial Zn pools.

Bostanci, Zeynep, E-mail: zbostanci@hmc.psu.edu [The Pennsylvania State University, Department of Nutritional Sciences, 209 Chandlee Lab, University Park, PA 16802 (United States); The Pennsylvania State University Milton S. Hershey Medical Center, Department of Surgery, 500 University Dr., Hershey, PA 17033 (United States); Alam, Samina, E-mail: sra116@psu.edu [The Pennsylvania State University, Department of Nutritional Sciences, 209 Chandlee Lab, University Park, PA 16802 (United States); The Pennsylvania State University Milton S. Hershey Medical Center, Department of Surgery, 500 University Dr., Hershey, PA 17033 (United States); Soybel, David I., E-mail: dsoybel@hmc.psu.edu [The Pennsylvania State University, Department of Nutritional Sciences, 209 Chandlee Lab, University Park, PA 16802 (United States); The Pennsylvania State University Milton S. Hershey Medical Center, Department of Surgery, 500 University Dr., Hershey, PA 17033 (United States); The Pennsylvania State University College of Medicine, Department of Cell and Molecular Physiology, 500 University Dr., Hershey, PA 17033 (United States); Kelleher, Shannon L., E-mail: slk39@psu.edu [The Pennsylvania State University, Department of Nutritional Sciences, 209 Chandlee Lab, University Park, PA 16802 (United States); The Pennsylvania State University Milton S. Hershey Medical Center, Department of Surgery, 500 University Dr., Hershey, PA 17033 (United States); The Pennsylvania State University College of Medicine, Department of Cell and Molecular Physiology, 500 University Dr., Hershey, PA 17033 (United States)

2014-02-15T23:59:59.000Z

435

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

436

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

437

Modeling of surface oxidation and oxidation induced damage in metal matrix composites  

E-Print Network [OSTI]

Surface oxidation in metal matrix composites (MMC's) is modeled by Fickian diffusion of oxygen in both the oxide layer and metal matrix. The oxidation process and the resulting immobilized oxygen at the interface is accounted for by the introduction...

Ma, Xinzheng

1995-01-01T23:59:59.000Z

438

Upper Higgs boson mass bounds from a chirally invariant lattice Higgs-Yukawa model  

E-Print Network [OSTI]

We establish the cutoff-dependent upper Higgs boson mass bound by means of direct lattice computations in the framework of a chirally invariant lattice Higgs-Yukawa model emulating the same chiral Yukawa coupling structure as in the Higgs-fermion sector of the Standard Model. As expected from the triviality picture of the Higgs sector, we observe the upper mass bound to decrease with rising cutoff parameter $\\Lambda$. Moreover, the strength of the fermionic contribution to the upper mass bound is explored by comparing to the corresponding analysis in the pure $\\Phi^4$-theory.

P. Gerhold; K. Jansen

2010-02-23T23:59:59.000Z

439

A comparative study of conventionally sintered and microwave sintered nickel zinc ferrite  

SciTech Connect (OSTI)

For the present work, nickel zinc ferrite having compositional formula Ni{sub 0.8}Zn{sub 0.2}Fe{sub 2}O{sub 4} was synthesized by conventional solid state method and sintered in conventional and microwave furnaces. Pellets were sintered with very short soaking time of 10 min at 1150 °C in microwave furnace whereas 4 hrs of soaking time was selected for conventional sintering at 1200 °C. Phase formation was confirmed by X-ray diffraction analysis technique. Scanning electron micrographs were taken for microstructural study. Dielectric properties were studied as a function of temperature. To study magnetic behavior, M-H hysteresis loops were recorded for both samples. It is observed that microwave sintered sample could obtain comparable properties to the conventionally sintered one in lesser soaking time at lower sintering temperature.

Rani, Rekha [Electroceramics Research Lab, GVM Girls College, Sonepat-131001, India and School of Physics and Materials Science, Thapar University, Patiala-147004 (India); Juneja, J. K. [Department of Physics, Hindu College, Sonepat-131001 (India); Raina, K. K. [School of Physics and Materials Science, Thapar University, Patiala-147004 (India); Kotnala, R. K. [National Physical Laboratory, New Delhi -110012 (India); Prakash, Chandra, E-mail: cprakash2014@gmail.com [Solid State Physics Laboratory, Timarpur, Delhi - 110054 (India)

2014-04-24T23:59:59.000Z

440

Magnetic and structural properties of nickel zinc ferrite nanoparticles synthesized at room temperature  

E-Print Network [OSTI]

oxide systems.11­13 Briefly, reverse micelles are water-in-oil emulsions in which the water. This ``excess'' of diamagnetic Zn can thus contribute to the overall decrease in magnetism. Further, this model

McHenry, Michael E.

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

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

442

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

443

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, R.; George, R.A.; Shockling, L.A.

1993-04-06T23:59:59.000Z

444

Hydrous metal oxide catalysts for oxidation of hydrocarbons  

SciTech Connect (OSTI)

This report describes work performed at Sandia under a CRADA with Shell Development of Houston, Texas aimed at developing hydrous metal oxide (HMO) catalysts for oxidation of hydrocarbons. Autoxidation as well as selective oxidation of 1-octene was studied in the presence of HMO catalysts based on known oxidation catalysts. The desired reactions were the conversion of olefin to epoxides, alcohols, and ketones, HMOs seem to inhibit autoxidation reactions, perhaps by reacting with peroxides or radicals. Attempts to use HMOs and metal loaded HMOs as epoxidation catalysts were unsuccessful, although their utility for this reaction was not entirely ruled out. Likewise, alcohol formation from olefins in the presence of HMO catalysts was not achieved. However, this work led to the discovery that acidified HMOs can lead to carbocation reactions of hydrocarbons such as cracking. An HMO catalyst containing Rh and Cu that promotes the reaction of {alpha}-olefins with oxygen to form methyl ketones was identified. Although the activity of the catalyst is relatively low and isomerization reactions of the olefin simultaneously occur, results indicate that these problems may be addressed by eliminating mass transfer limitations. Other suggestions for improving the catalyst are also made. 57 refs.

Miller, J.E.; Dosch, R.G.; McLaughlin, L.I. [Sandia National Labs., Albuquerque, NM (United States). Process Research Dept.

1993-07-01T23:59:59.000Z

445

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.

446

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

447

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

448

Improving simulations of the upper ocean by inclusion of surface waves in the MellorYamada turbulence scheme  

E-Print Network [OSTI]

mixing. Surface waves can enhance turbulence kinetic energy and mixing of the upper ocean via wave interaction on the MellorYamada scheme and upper ocean thermal structure are examined and compared with each scheme. The behaviors of the MellorYamada scheme, as well as the simulated upper ocean thermal structure

Ezer,Tal

449

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

450

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...

451

Demonstration Sites of Best Management Practices: A Manual for the Upper Etowah River Alliance  

E-Print Network [OSTI]

Demonstration Sites of Best Management Practices: A Manual for the Upper Etowah River Alliance and the Institute of Ecology #12;UERA BMPs Demonstation Sites Manual 2 of 2 Demonstration Sites of Best Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 iii. Best Management Practices

Rosemond, Amy Daum

452

E.2. Electronic Appendix -Food Web Elements of the Fraser River Upper River (above rkm 210)  

E-Print Network [OSTI]

1 E.2. Electronic Appendix - Food Web Elements of the Fraser River Basin Upper River (above rkm 210, but improvements at pulp mills and waste water treatment plant upgrades are thought to have improved water quality

453

INDIANA UNIVERSITY COMPUTER SCIENCE DEPARTMENT PROFESSIONAL MASTER'S DEGREE: UPPER LEVEL GRADUATION REQUIREMENTS WORKSHEET  

E-Print Network [OSTI]

INDIANA UNIVERSITY COMPUTER SCIENCE DEPARTMENT PROFESSIONAL MASTER'S DEGREE: UPPER LEVEL GRADUATION790) Q: (Qualifying exam + 2 approved graduate-level courses (1, 2 above)) Qualifying exam: _______________________ Date:_____ Grade:____ R, S, TH: (Master's research project, Master's software project, University

Indiana University

454

Microsoft Word - Upper Jocko River Final Draft CX 7-15-2013.docx  

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

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):...

455

Implementation Study of Energy Conservation Recommendations in the Upper Midwest Region  

E-Print Network [OSTI]

The South Dakota State University (SDSU) Industrial Energy Optimization Program (IEOP) and Energy Analysis and Diagnostic Center (EADC) program perform energy audits for industrial companies in the Upper Midwest region of the United States. Each...

Heisinger, K. P.; Bassett, K.; Twedt, M. P.

456

Concurrent tectonic and climatic changes recorded in upper Tortonian sediments from the Eastern Mediterranean  

E-Print Network [OSTI]

evolution in the eastern Mediterranean region. Concurrent tectonic and climatic changes in the MetochiaConcurrent tectonic and climatic changes recorded in upper Tortonian sediments from the Eastern climatic reconstructions reveal substantial changes, especially on the North African continent which

Utrecht, Universiteit

457

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...

458

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

459

Improved age control on early Homo fossils from the upper Burgi Member at Koobi Fora, Kenya  

E-Print Network [OSTI]

Improved age control on early Homo fossils from the upper Burgi Member at Koobi Fora, Kenya in Areas 105 and 131 on the Karari Ridge in the eastern Turkana Basin (Kenya). We identify the base

Utrecht, Universiteit

460

Improved age control on early Homo fossils from the upper Burgi Member at Koobi Fora, Kenya  

E-Print Network [OSTI]

1 Improved age control on early Homo fossils from the upper Burgi Member at Koobi Fora, Kenya in Areas 105 and 131 on the Karari Ridge in the eastern Turkana Basin (Kenya). We identify the base

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.


461

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

462

Effects of Tungsten Oxide Addition on the Electrochemical Performance...  

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

Tungsten Oxide Addition on the Electrochemical Performance of Nanoscale Tantalum Oxide-Based Electrocatalysts for Effects of Tungsten Oxide Addition on the Electrochemical...

463

Enhanced stability against bias-stress of metal-oxide thin film transistors deposited at elevated temperatures  

SciTech Connect (OSTI)

Transparent zinc-tin-oxide (ZTO) thin film transistors (TFTs) have been prepared by DC magnetron sputtering. Compared to reference devices with a channel deposited at room temperature and subsequently annealing at 400 deg. C, a substantially enhanced stability against bias stress is evidenced for devices with in-situ substrate heating during deposition (400 deg. C). A reduced density of sub-gap defect states in TFT channels prepared with in-situ substrate heating is found. Concomitantly, a reduced sensitivity to the adsorption of ambient gases is evidenced for the in-situ heated devices. This finding is of particular importance for an application as driver electronics for organic light emitting diode displays.

Fakhri, M.; Goerrn, P.; Riedl, T. [Institute of Electronic Devices, University of Wuppertal, Rainer-Gruenter-St. 21, 42119 Wuppertal (Germany); Weimann, T.; Hinze, P. [Physikalisch-Technische Bundesanstalt Braunschweig, Bundesallee 100, 38116 Braunschweig (Germany)

2011-09-19T23:59:59.000Z

464

Development of a multi-regime tribometer and investigation of zinc dialkyldithiophosphate tribofilm development in the presence of overbased calcium sulfonate  

E-Print Network [OSTI]

A custom tribometer was developed to investigate the production of nano-scale films from the anti-wear additive zinc dialkyldithiophosphate (ZDDP). The tribometer was designed to operate in various conditions of lubrication ...

Kariya, H. Arthur (Harumichi Arthur)

2009-01-01T23:59:59.000Z

465

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

466

Formulations for iron oxides dissolution  

DOE Patents [OSTI]

A mixture of a di- or polyphosphonic acid and a reductant wherein each is present in a sufficient amount to provide a synergistic effect with respect to the dissolution of metal oxides and optionally containing corrosion inhibitors and pH adjusting agents.

Horwitz, Earl P. (Argonne, IL); Chiarizia, Renato (Argonne, IL)

1992-01-01T23:59:59.000Z

467

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

468

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

469

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

470

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

471

NANO - "Green" metal oxides ... | ornl.gov  

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

"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 used in...

472

Genomic consequences of DNA oxidation by peroxynitrite  

E-Print Network [OSTI]

The radicals nitric oxide and superoxide are produced endogenously by activated macrophages and neutrophils and combine in a diffusion-limited reaction to form peroxynitrite, a powerful oxidizing and nitrating agent capable ...

Neeley, William Louis

2006-01-01T23:59:59.000Z

473

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

474

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

475

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

476

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

477

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, R.L.

1993-10-12T23:59:59.000Z

478

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.

479

Direct oxidation of hydrocarbons in a solid oxide fuel cell. I. Methane oxidation  

SciTech Connect (OSTI)

The performance of Cu cermets as anodes for the direct oxidation of CH{sub 4} in solid oxide fuel cells was examined. Mixtures of Cu and yttria-stabilized zirconia (YAZ) were found to give similar performance to Ni-YSZ cermets when H{sub 2} was used as the fuel, but did not deactivate in dry CH{sub 4}. While Cu-YSZ was essentially inert to methane, the addition of ceria to the anode gave rise to reasonable power densities and stable operation over a period of at least 3 days. Proof of direct oxidation of CH{sub 4} came from chemical analysis of the products leaving the cell. The major carbon-containing product was CO{sub 2}, with only traces of CO observed, and there was excellent agreement between the actual cell current and that predicted by the methane conversion. These results demonstrate that direct, electrocatalytic oxidation of dry methane is possible, with reasonable performance.

Park, S.; Craciun, R.; Vohs, J.M.; Gorte, R.J.

1999-10-01T23:59:59.000Z

480

Synthesizing photovoltaic thin films of high quality copper-zinc-tin alloy with at least one chalcogen species  

DOE Patents [OSTI]

A method for synthesizing a thin film of copper, zinc, tin, and a chalcogen species ("CZTCh" or "CZTSS") with well-controlled properties. The method includes depositing a thin film of precursor materials, e.g., approximately stoichiometric amounts of copper (Cu), zinc (Zn), tin (Sn), and a chalcogen species (Ch). The method then involves re-crystallizing and grain growth at higher temperatures, e.g., between about 725 and 925 degrees K, and annealing the precursor film at relatively lower temperatures, e.g., between 600 and 650 degrees K. The processing of the precursor film takes place in the presence of a quasi-equilibrium vapor, e.g., Sn and chalcogen species. The quasi-equilibrium vapor is used to maintain the precursor film in a quasi-equilibrium condition to reduce and even prevent decomposition of the CZTCh and is provided at a rate to balance desorption fluxes of Sn and chalcogens.

Teeter, Glenn; Du, Hui; Young, Matthew

2013-08-06T23:59:59.000Z

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.


481

MATERIALS AND MOLECULAR RESEARCH DIVISION ANNUAL REPORT 1979  

E-Print Network [OSTI]

of Voltage Barriers in Zinc Oxide Varistors," Appl. Phys.Relation- ships of a Zinc Oxide Varistor ! vlaterial," M.S.

Authors, Various

2013-01-01T23:59:59.000Z

482

Research, development, and demonstration of nickel-zinc batteries for electric-vehicle propulsion. Annual report for 1980  

SciTech Connect (OSTI)

Progress in work at Exide in three main development areas, i.e., battery design and development, nickel cathode study, and electrochemical studies is reported. Battery design and development concentrated on the optimization of design parameters, including electrode spacing, charging methods, electrolyte concentration, the design and fabrication of prototype cells and modules, and testing to verify these parameters. Initial experiments indicated that an interelectrode spacing of 2.5 mm was optimum when normal (D.C.) charging is used. It was during these experiments that a high rate charging technique was developed to deposit a dense active zinc which did not shed during vibration. A 4 cell - 300 Ah experimental module was built and sent to NBTL for testing. Initial testing on this module and a 300 Ah cell are reported. Experiments on electrolyte concentration indicate that higher concentrations of KOH (8M, 9M or 10M) are beneficial to capacity maintenance. Available nickel cathodes were evaluated for possible use in the VIBROCEL. These included pocket, sintered plaque impregnated, nickel plated steel wool impregnated, plastic bonded and CMG (multifoil) electrodes. These electrodes have Coulombic densities ranging from 70 Ah/Kg for pocket plates to 190 Ah/Kg for CMG electrodes. Detailed test data are presented for each type including rate capability, effect of zincate on performance, and capacity maintenance with cycling. Work on zinc deposition emphasized the special charging technique. This is a deposition using special waveforms of charging current, to deposit dense crystalline zinc on the anode substrate.

Not Available

1981-03-01T23:59:59.000Z

483

Deducing the Energetic Cost of Protein Folding in Zinc Finger Proteins Using Designed Metallopeptides  

SciTech Connect (OSTI)

Zinc finger transcription factors represent the largest single class of metalloproteins in the human genome. Binding of Zn(II) to their canonical Cys4, Cys3His1, or Cys2His2 sites results in metal-induced protein folding events required to achieve their proper structure for biological activity. The thermodynamic contribution of Zn(II) in each of these coordination spheres toward protein folding is poorly understood because of the coupled nature of the metal-ligand and protein-protein interactions. Using an unstructured peptide scaffold, GGG, we have employed fluorimetry, potentiometry, and calorimetry to determine the thermodynamics of Zn(II) binding to the Cys4, Cys3His1, and Cys2His2 ligand sets with minimal interference from protein folding effects. The data show that Zn(II) complexation is entropy driven and modulated by proton release. The formation constants for Zn(II)-GGG with a Cys4, Cys3His1, or Cys2His2 site are 5.6 x 1016, 1.5 x 1015, or 2.5 x 1013 M-1, respectively. Thus, the Zn(II)-Cys4, Zn(II)-Cys3His1, and Zn(II)-Cys2His2 interactions can provide up to 22.8, 20.7, and 18.3 kcal/mol, respectively, in driving force for protein stabilization, folding, and/or assembly at pH values above the ligand pKa values. While the contributions from the three coordination motifs differ by 4.5 kcal/mol in Zn(II) affinity at pH 9.0, they are equivalent at physiological pH, ?G = -16.8 kcal/mol or a Ka = 2.0 x 1012 M-1. Calorimetric data show that this is due to proton-based enthalpy-entropy compensation between the favorable entropic term from proton release and the unfavorable enthalpic term due to thiol deprotonation. Since protein folding effects have been minimized in the GGG scaffold, these peptides possess nearly the tightest Zn(II) affinities possible for their coordination motifs. The Zn(II) affinities in each coordination motif are compared between the GGG scaffold and natural zinc finger proteins to determine the free energy required to fold the latter. Several proteins have identical Zn(II) affinities to GGG. That is, little, if any, of their Zn(II) binding energy is required to fold the protein, whereas some have affinities weakened by up to 5.7 kcal/mol; i.e., the Zn(II) binding energy is being used to fold the protein.

Reddi,A.; Guzman, T.; Breece, r.; Tierney, D.; Gibney, B.

2007-01-01T23:59:59.000Z

484

Classification of oxide glasses: A polarizability approach  

SciTech Connect (OSTI)

A classification of binary oxide glasses has been proposed taking into account the values obtained on their refractive index-based oxide ion polarizability {alpha}{sub O2-}(n{sub 0}), optical basicity {lambda}(n{sub 0}), metallization criterion M(n{sub 0}), interaction parameter A(n{sub 0}), and ion's effective charges as well as O1s and metal binding energies determined by XPS. Four groups of oxide glasses have been established: glasses formed by two glass-forming acidic oxides; glasses formed by glass-forming acidic oxide and modifier's basic oxide; glasses formed by glass-forming acidic and conditional glass-forming basic oxide; glasses formed by two basic oxides. The role of electronic ion polarizability in chemical bonding of oxide glasses has been also estimated. Good agreement has been found with the previous results concerning classification of simple oxides. The results obtained probably provide good basis for prediction of type of bonding in oxide glasses on the basis of refractive index as well as for prediction of new nonlinear optical materials.

Dimitrov, Vesselin [Department of Silicate Technology, University of Chemical Technology and Metallurgy, 8 Kl. Ohridski Blvd., Sofia 1756 (Bulgaria); Komatsu, Takayuki [Department of Chemistry, The Nagaoka University of Technology, 1603-1 Kamitomioka-cho, Nagaoka-shi, Niigata-ken 940-2188 (Japan)]. E-mail: komatsu@chem.nagaokaut.ac.jp

2005-03-15T23:59:59.000Z

485

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

486

Coal combustion by wet oxidation  

SciTech Connect (OSTI)

The combustion of coal by wet oxidation was studied by the Center for Waste Management Programs, of Michigan Technological University. In wet oxidation a combustible material, such as coal, is reacted with oxygen in the presence of liquid water. The reaction is typically carried out in the range of 204/sup 0/C (400/sup 0/F) to 353/sup 0/C (650/sup 0/F) with sufficient pressure to maintain the water present in the liquid state, and provide the partial pressure of oxygen in the gas phase necessary to carry out the reaction. Experimental studies to explore the key reaction parameters of temperature, time, oxidant, catalyst, coal type, and mesh size were conducted by running batch tests in a one-gallon stirred autoclave. The factors exhibiting the greatest effect on the extent of reaction were temperature and residence time. The effect of temperature was studied from 204/sup 0/C (400/sup 0/F) to 260/sup 0/C (500/sup 0/F) with a residence time from 600 to 3600 seconds. From this data, the reaction activation energy of 2.7 x 10/sup 4/ calories per mole was determined for a high-volatile-A-Bituminous type coal. The reaction rate constant may be determined at any temperature from the activation energy using the Arrhenius equation. Additional data were generated on the effect of mesh size and different coal types. A sample of peat was also tested. Two catalysts were evaluated, and their effects on reaction rate presented in the report. In addition to the high temperature combustion, low temperature desulfurization is discussed. Desulfurization can improve low grade coal to be used in conventional combustion methods. It was found that 90% of the sulfur can be removed from the coal by wet oxidation with the carbon untouched. Further desulfurization studies are indicated.

Bettinger, J.A.; Lamparter, R.A.; McDowell, D.C.

1980-11-15T23:59:59.000Z

487

Comparative study of the reactions of metal oxides and carbonates with H{sub 2}S and SO{sub 2}. Final technical report, September 1990--February 1994  

SciTech Connect (OSTI)

The primary objective of this project had been the investigation of the effects of pore structure on the capacity of porous metal oxides for removal of gaseous pollutants from flue gases of power plants (SO{sub 2}) and hot coal gas (primarily H{sub 2}S). Porous calcines obtained from natural precursors (limestones and dolomites) and sorbents based on zinc oxide were used as model systems in our experimental studies, which included reactivity evolution experiments and pore structure characterization using a variety of methods. The key idea behind this project was to appropriately exploit the differences of the sulfidation and sulfation reactions (for instance, different molar volumes of solid products) to elucidate the dependence of the sorptive capacity of a porous sorbent on its physical microstructure. In order to be able to proceed faster and more productively on the analysis of the above defined problem, it was decided to employ in our studies solids whose reaction with SO{sub 2} (limestone calcines) or H{sub 2}S (sorbents based on zinc oxide) had been investigated in detail in past studies by our research group. Reactivity vs time or conversion vs time studies were conducted using thermogravimetry and fixed-bed and fluidized-bed reactors. The pore structure of partially reacted samples collected at selected time instants or conversion levels was analyzed by gas adsorption and mercury porosimetry. For better characterization of the pore structure of the solid samples, we also carried out intraparticle diffusivity measurements by the peak-broadening (chromatographic) method, using a system developed for this purpose in our laboratory. In the context of this part of the project, we also conducted a detailed theoretical investigation of the measurement of effective diffusivities in porous solids using the diffusion-cell method.

Sotirchos, S.V.

1994-03-01T23:59:59.000Z

488

Graphene oxide oxidizes stannous ions to synthesize tin sulfidegraphene nanocomposites with small crystal size for high performance lithium ion  

E-Print Network [OSTI]

Graphene oxide oxidizes stannous ions to synthesize tin sulfide­graphene nanocomposites with small September 2012 DOI: 10.1039/c2jm34864k This study reports a novel strategy of preparing graphene composites by employing graphene oxide as precursor and oxidizer. It is demonstrated that graphene oxide can oxidize

Cao, Guozhong

489

Properties of zinc oxide films grown on sapphire substrates using high-temperature H{sub 2}O generated by a catalytic reaction on platinum nanoparticles  

SciTech Connect (OSTI)

The authors investigated the characteristics of ZnO films grown on a-plane (11-20) sapphire substrates at 773–873?K using a reaction between dimethylzinc and high-temperature H{sub 2}O generated by a catalytic reaction on Pt nanoparticles. The growth rate was 0.02–0.07??m min{sup ?1}. The largest electron mobility and the smallest residual carrier concentration for the ZnO films were 169 cm{sup 2} V{sup ?1} s{sup ?1} and 1.6?×?10{sup 17}?cm{sup ?3}, respectively. X-ray diffraction patterns for the ZnO films exhibited intense (0002) and (0004) peaks associated with ZnO (0001) planes. The minimum full width at half maximum of the ?-rocking curve for ZnO (0002) was less than 0.1°. In a ZnO film with a high electron mobility, no rotational domains were identified using a ZnO (10-10) ? scan. From secondary ion mass spectroscopy, a hydrogen concentration of 3?×?10{sup 18}?cm{sup ?3} and a boron concentration of 2–5?×?10{sup 17}?cm{sup ?3} were determined. These were identified as extrinsic donor impurities.

Yasui, Kanji, E-mail: kyasui@vos.nagaokaut.ac.jp; Takeuchi, Tomohiko; Nagatomi, Eichi; Satomoto, Souichi; Miura, Hitoshi; Kato, Takahiro [Department of Electrical, Electronics and Information Engineering, Nagaoka University of Technology, Nagaoka, Niigata 940-2188 (Japan); Konya, Takayuki [Application Laboratory, Rigaku Corporation, Akishima, Tokyo 196-8666 (Japan)

2014-03-15T23:59:59.000Z

490

A thermalization energy analysis of the threshold voltage shift in amorphous indium gallium zinc oxide thin film transistors under simultaneous negative gate bias and illumination  

E-Print Network [OSTI]

of the display industry as it moves from liquid crystal to organic light emitting diode technology and with requirements for larger areas and higher resolutions. A number of alternative material systems to a-Si:H have emerged, including organic semiconductors...

Flewitt, Andrew J.; Powell, M.J.

2014-01-01T23:59:59.000Z

491

Zinc ferrite nanoparticles activate IL-1b, NFKB1, CCL21 and NOS2 signaling to induce mitochondrial dependent intrinsic apoptotic pathway in WISH cells  

SciTech Connect (OSTI)

The present study has demonstrated the translocation of zinc ferrite nanoparticles (ZnFe{sub 2}O{sub 4}-NPs) into the cytoplasm of human amnion epithelial (WISH) cells, and the ensuing cytotoxicity and genetic damage. The results suggested that in situ NPs induced oxidative stress, alterations in cellular membrane and DNA strand breaks. The [3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide] (MTT) and neutral red uptake (NRU) cytotoxicity assays indicated 64.48 ± 1.6% and 50.73 ± 2.1% reduction in cell viability with 100 ?g/ml of ZnFe{sub 2}O{sub 4}-NPs exposure. The treated WISH cells exhibited 1.2-fold higher ROS level with 0.9-fold decline in membrane potential (??m) and 7.4-fold higher DNA damage after 48 h of ZnFe{sub 2}O{sub 4}-NPs treatment. Real-time PCR (qPCR) analysis of p53, CASP 3 (caspase-3), and bax genes revealed 5.3, 1.6, and 14.9-fold upregulation, and 0.18-fold down regulation of bcl 2 gene vis-à-vis untreated control. RT{sup 2} Profiler™ PCR array data elucidated differential up-regulation of mRNA transcripts of IL-1b, NFKB1, NOS2 and CCL21 genes in the range of 1.5 to 3.7-folds. The flow cytometry based cell cycle analysis suggested the transfer of 15.2 ± 2.1% (p < 0.01) population of ZnFe{sub 2}O{sub 4}-NPs (100 ?g/ml) treated cells into apoptotic phase through intrinsic pathway. Over all, the data revealed the potential of ZnFe{sub 2}O{sub 4}-NPs to induce cellular and genetic toxicity in cells of placental origin. Thus, the significant ROS production, reduction in ??m, DNA damage, and activation of genes linked to inflammation, oxidative stress, proliferation, DNA damage and repair could serve as the predictive toxicity and stress markers for ecotoxicological assessment of ZnFe{sub 2}O{sub 4}-NPs induced cellular and genetic damage. - Highlights: • First report on the molecular toxicity of ZnFe{sub 2}O{sub 4}-NPs in cells of placental origin • WISH cells treated with ZnFe{sub 2}O{sub 4}-NPs exhibited cytoplasmic localization of NPs. • ZnFe{sub 2}O{sub 4}-NPs induce DNA damage and mitochondrial dysfunction in WISH cells. • ZnFe{sub 2}O{sub 4}-NPs activate inflammatory and oxidative stress signaling in WISH cells. • Elevation of p53, CASP 3, bax and bcl 2 genes affirms intrinsic apoptotic pathway.

Saquib, Quaiser; Al-Khedhairy, Abdulaziz A.; Ahmad, Javed; Siddiqui, Maqsood A.; Dwivedi, Sourabh; Khan, Shams T. [Department of Zoology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451 (Saudi Arabia); Chair for DNA Research, Department of Zoology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451 (Saudi Arabia); Musarrat, Javed, E-mail: musarratj1@yahoo.com [Chair for DNA Research, Department of Zoology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451 (Saudi Arabia); Department of Agricultural Microbiology, Faculty of Agricultural Sciences, Aligarh Muslim University, Aligarh 202002, U.P. (India)

2013-12-01T23:59:59.000Z

492

Depositional setting and sandstone diagenesis of the Upper Pennsylvanian (Missourian) Hepler Formation, Cherokee Shelf of the midcontinent  

SciTech Connect (OSTI)

The Hepler Formation marks the base of the Pleasanton Group which is recognized as the base of the Upper Pennsylvanian in southeastern Kansas. This formation consists of interstratified units of shales, siltstones, and sandstones, as well as a localized coal bed. These lithologies are interpreted as having formed in a prograting, fluvially-dominated deltaic sequence that was deposited as the Late Pennsylvanian sea temporarily withdrew from the Cherokee shelf. Hepler sandstone bodies in the study area are predominantly quartz arenites and sublitharenites. The diagenetic history of the Hepler consisted of alternating periods of authigenic mineral precipitation and dissolution of both detrital grains and cements. Petrographic observations indicate that silica cementation, in the form of quartz overgrowths, took place early in the paragenetic sequence. Changes in the meteoric water chemistry, resulted in partial quartz and feldspar dissolution, and alteration of feldspars to clays. Precipitation of carbonate into dissolution features was initiated by acidic surface waters (fluvial) followed by a sea level rise allowing carbonate-saturated marine waters to flush these sediments. Further burial and compaction destroyed much of remaining porosity and left concavo-convex contacts and sutured quartz grains. This was followed by anoxic conditions which allowed pyrite crystallization to take place. A subsequent fall in sea level exposed Hepler deposits once again to meteoric, low pH waters, resulting in carbonate dissolution. All observed porosity is secondary, formed by carbonate dissolution. Surface samples were subjected to weathering of iron-bearing components to iron-oxide, a product not observable in subsurface core samples.

Gilmer, M.H.; Brenner, R.L. (Univ. of Iowa, Iowa City, IA (United States). Dept. of Geology)

1992-01-01T23:59:59.000Z

493

METHODS OF PREVENTING THE SPREAD OF ZINC CONTAMINATION DURING VACUUM PROCESSING  

SciTech Connect (OSTI)

Radioactive zinc, {sup 65}Zn, was detected after a thermal vacuum process that extracted a desired product from articles out of a commercial light water reactor. While the facility is designed to handle radioactive materials, the location of the {sup 65}Zn was in an area that is not designed for gamma emitting contaminants. A series of experiments were conducted to entrain the contaminant in an easily replaceable trap within the process piping. The experiments were conducted with increasing levels of complexity. Initially a simple apparatus was developed to determine the effect of substrate temperature on the vapor capture, this was followed by experiments to determine the effect of filter pore size on pumping and trapping, finally the interactive effects of both pore size and temperature were evaluated. The testing was conducted on a system that used a roughing vacuum pump using model and prototypic materials. It was determined that heating the substrate to nominally 200°C resulted in effective trapping on the model as well as prototypic material.

Korinko, P.; Stoner, K.; Duncan, A.

2013-11-20T23:59:59.000Z

494

The heterogeneous partial oxidation of light alkanes  

E-Print Network [OSTI]

(cont.) With this approach, an upper bound on the yield for OCM was computed. Results showed that even with optimal surface chemistry, strict limits existed on the attainable yield. Surface energetics necessary for superior ...

Su, Yee San, 1977-

2004-01-01T23:59:59.000Z

495

Reduction of Human Defensin 5 Affords a High-Affinity Zinc-Chelating Peptide  

E-Print Network [OSTI]

Human defensin 5 (HD5) is a 32-residue cysteine-rich host-defense peptide that exhibits three disulfide bonds in the oxidized form (HD5[subscript ox]). It is abundant in small intestinal Paneth cells, which release HD5 ...

Zhang, Yunfei

496

Hydrochemistry and hydrogeologic conditions within the Hanford Site upper basalt confined aquifer system  

SciTech Connect (OSTI)

As part of the Hanford Site Ground-Water Surveillance Project, Flow System Characterization Task. Pacific Northwest Laboratory examines the potential for offsite migration of contamination within the upper basalt confined aquifer system for the US Department of Energy (DOE). As part of this activity, groundwater samples were collected over the past 2 years from selected wells completed in the upper Saddle Mountains Basalt. The hydrochemical and isotopic information obtained from these groundwater samples provides hydrologic information concerning the aquifer-flow system. Ideally, when combined with other hydrologic property information, hydrochemical and isotopic data can be used to evaluate the origin and source of groundwater, areal groundwater-flow patterns, residence and groundwater travel time, rock/groundwater reactions, and aquifer intercommunication for the upper basalt confined aquifer system. This report presents the first comprehensive Hanford Site-wide summary of hydrochemical properties for the upper basalt confined aquifer system. This report provides the hydrogeologic characteristics (Section 2.0) and hydrochemical properties (Section 3.0) for groundwater within this system. A detailed description of the range of the identified hydrochemical parameter subgroups for groundwater in the upper basalt confined aquifer system is also presented in Section 3.0. Evidence that is indicative of aquifer contamination/aquifer intercommunication and an assessment of the potential for offsite migration of contaminants in groundwater within the upper basalt aquifer is provided in Section 4.0. The references cited throughout the report are given in Section 5.0. Tables that summarize groundwater sample analysis results for individual test interval/well sites are included in the Appendix.

Spane, F.A. Jr.; Webber, W.D.

1995-09-01T23:59:59.000Z

497

Essays on the Upper Mississippi River and Illinois Waterway and U.S. grain market  

E-Print Network [OSTI]

navigation efficiency was initiated by the U.S. Army of Corps Engineers in 1993 (USACE, 1997). The Corps proposed to expand five 600- foot long locks (locks 20, 21, 22, 24, 25) on the Upper Mississippi River and locks Peoria and LaGrange on the Illinois... 1). Among the eight locks on the Illinois River, lock LaGrange had the highest average delay of 3.96 hours during the 1980 to 1999 period. Further, although the average delay time of delayed vessels at each lock on the lower portion of the Upper...

Yu, Tun-Hsiang

2005-08-29T23:59:59.000Z

498

Estimated Costs and Returns for Catfish Farms with Recirculating Ponds Along the Upper Texas Coast.  

E-Print Network [OSTI]

_TDOC ' Z TA24S.7 8873 NO.1704 - . , ., TEXAS A&M UNIVERSHY LIBRARY for Catfish Farms ' with Recirculating Ponds Along ? . . the Upper Texas Coast ~7'!K~fi~~~ation ? J. Charles Lee: Interim Director? The Texas A&M University System ? C...~J1ege Station, Texas :,. .,: (Blank Page in OrigiBal BuBetiol ' 1iJ. ~ ; :; . : . . / I Estimated Costs and Returns for Catfish Farms with Recirculating Ponds Along the Upper Texas Coast J.A.D. Lambregts, Marketing Manager for Niaid...

Lambregts, J.A.D.; Griffin, W.L.; Lacewell R.D.; Davis, J.T.; Clary, G.M.

1992-01-01T23:59:59.000Z

499

A preliminary study of the distribution of some copepods in upper Laguna Madre  

E-Print Network [OSTI]

LIBRARY a a at cniiEr~ nF TExas A PRELIMINARY STUDY OF THE DISTRIBUTION OF SOME COPEPODS IN UPPER LAGUNA MADRE John C. Henderson A Thesis Submitted to the Graduate School of the Agricultural and Mechanical College of Texas in partial... fulfillment of the requirements for the degree of MASTER OF SCIENCE Mlny, io(R Ma/or Sub)ect: Oceanography A PRELIMINARY STUDY OF THE DISTRIBUTION OF SOME COPEPODS IN UPPER LAGUNA MADRE A Thesis John C. Henderson Approved as to style and content by: C...

Henderson, John C

1958-01-01T23:59:59.000Z

500

Insect community structure and function in Upper Three Runs, Savannah River Site, South Carolina  

SciTech Connect (OSTI)

A project to document the insect species in the upper reaches of Upper Three Runs at the Savannah River site was recently completed. This research was supported by the US Department of Energy under the National Environmental Research Park Program. The work was performed by the Department of Entomology at Clemson University in clemson, SC, by John C. Morse (principal investigator), William R. English and their colleagues. The major output from this study was the dissertation of Dr. William R. English entitled ``Ecosystem Dynamics of a South Carolina Sandhills Stream.`` He investigated selected environmental resources and determined their dynamics and the dynamics of the aquatic invertebrate community structure in response to them.

Morse, J.C.; English, W.R. [Clemson Univ., SC (United States). Dept. of Entomology; Looney, B.B. [Westinghouse Savannah River Co., Aiken, SC (United States)

1993-07-08T23:59:59.000Z