Sample records for fdb fcns wo

  1. File:01-FD-b - LandUsePlanAmendmentProcess.pdf | 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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand JumpConceptual Model,DOEHazelPennsylvania:57427°,Ferry County,Glass Buttes- Transmission.pdf0FD-b -

  2. Strain Accommodation By Facile WO6 Octahedral Distortion and...

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

    to other BO6 octahedra in ABO3 structured perovskite oxides, the WO6 octahedra in tungsten trioxide (WO3) can withstand a much larger degree of distortion and tilting to...

  3. Hydrothermally grown nanostructured WO films and their electrochromic characteristics

    E-Print Network [OSTI]

    Demir, Hilmi Volkan

    Hydrothermally grown nanostructured WO 3 films and their electrochromic characteristics.1088/0022-3727/43/28/285501 Hydrothermally grown nanostructured WO3 films and their electrochromic characteristics Zhihui Jiao1 , Xiao Wei and their electrochromic characteristics. Plate-like monoclinic WO3 nanostructures were grown directly on fluorine

  4. Reactivity of Hydrogen and Methanol on (001) Surfaces of WO3, ReO3, WO3/ReO3 and ReO3/WO3

    SciTech Connect (OSTI)

    Ling, Sanliang; Mei, Donghai; Gutowski, Maciej S.

    2011-05-16T23:59:59.000Z

    Bulk tungsten trioxide (WO3) and rhenium trioxide (ReO3) share very similar structures but display different electronic properties. WO3 is a wide bandgap semiconductor while ReO3 is an electronic conductor. With the advanced molecular beam epitaxy techniques, it is possible to make heterostructures comprised of layers of WO3 and ReO3. These heterostructures might display reactivity different than pure WO3 and ReO3. The interactions of two probe molecules (hydrogen and methanol) with the (001) surfaces of WO3, ReO3, and two heterostructures ReO3/WO3 and WO3/ReO3 were investigated at the density functional theory level. Atomic hydrogen prefers to adsorb at the terminal O1C sites forming a surface hydroxyl on four surfaces. Dissociative adsorption of a hydrogen molecule at the O1C site leads to formation of a water molecule adsorbed at the surface M5C site. This is thermodynamically the most stable state. A thermodynamically less stable dissociative state involves two surface hydroxyl groups O1CH and O2CH. The interaction of molecular hydrogen and methanol with pure ReO3 is stronger than with pure WO3 and the strength of the interaction substantially changes on the WO3/ReO3 and ReO3/WO3 heterostructures. The reaction barriers for decomposition and recombination reactions are sensitive to the nature of heterostructure. The calculated adsorption energy of methanol on WO3(001) of -65.6 kJ/mol is consistent with the previous experimental estimation of -67 kJ/mol. This material is based upon work supported as part of the Center for Molecular Electrocatalysis, an Energy Frontier Research Center funded by the US Department of Energy, Office of Science, Office of Basic Energy Sciences.

  5. TriWo AG | 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 onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere IRaghuraji Agro IndustriesTown of Ladoga, Indiana (UtilityTri-State Electric Member Corp Jump to:TriWo AG Jump

  6. angles shakaku wo: Topics by E-print Network

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

    Nidia 2012-01-01 73 Affect of Viscosity and Droplet Diameter on water-in-oil (wo) Emulsions: An Experimental Study CiteSeer Summary: AbstractThe influence of viscosity on...

  7. Preparation and Characterization of Monodispersed WO3 Nanoclusters...

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

    early transition metal oxide system for catalysis studies—direct sublimation of tungsten trioxide on TiO2(110). Isolated monodispersed cyclic trimers, i.e., (WO3)3, can be...

  8. Radioactive contamination of ZnWO4 crystal scintillators

    E-Print Network [OSTI]

    P. Belli; R. Bernabei; F. Cappella; R. Cerulli; F. A. Danevich; A. M. Dubovik; S. d'Angelo; E. N. Galashov; B. V. Grinyov; A. Incicchitti; V. V. Kobychev; M. Laubenstein; L. L. Nagornaya; F. Nozzoli; D. V. Poda; R. B. Podviyanuk; O. G. Polischuk; D. Prosperi; V. N. Shlegel; V. I. Tretyak; I. A. Tupitsyna; Ya. V. Vasiliev; Yu. Ya. Vostretsov

    2010-09-05T23:59:59.000Z

    The radioactive contamination of ZnWO4 crystal scintillators has been measured deep underground at the Gran Sasso National Laboratory (LNGS) of the INFN in Italy with a total exposure 3197 kg x h. Monte Carlo simulation, time-amplitude and pulse-shape analyses of the data have been applied to estimate the radioactive contamination of the ZnWO4 samples. One of the ZnWO4 crystals has also been tested by ultra-low background gamma spectrometry. The radioactive contaminations of the ZnWO4 samples do not exceed 0.002 -- 0.8 mBq/kg (depending on the radionuclide), the total alpha activity is in the range: 0.2 - 2 mBq/kg. Particular radioactivity, beta active 65Zn and alpha active 180W, has been detected. The effect of the re-crystallization on the radiopurity of the ZnWO4 crystal has been studied. The radioactive contamination of samples of the ceramic details of the set-ups used in the crystals growth has been checked by low background gamma spectrometry. A project scheme on further improvement of the radiopurity level of the ZnWO4 crystal scintillators is briefly addressed.

  9. Radioactive contamination of ZnWO4 crystal scintillators

    E-Print Network [OSTI]

    Belli, P; Cappella, F; Cerulli, R; Danevich, F A; Dubovik, A M; d'Angelo, S; Galashov, E N; Grinyov, B V; Incicchitti, A; Kobychev, V V; Laubenstein, M; Nagornaya, L L; Nozzoli, F; Poda, D V; Podviyanuk, R B; Polischuk, O G; Prosperi, D; Shlegel, V N; Tretyak, V I; Tupitsyna, I A; Vasiliev, Ya V; Vostretsov, Yu Ya

    2010-01-01T23:59:59.000Z

    The radioactive contamination of ZnWO4 crystal scintillators has been measured deep underground at the Gran Sasso National Laboratory (LNGS) of the INFN in Italy with a total exposure 3197 kg x h. Monte Carlo simulation, time-amplitude and pulse-shape analyses of the data have been applied to estimate the radioactive contamination of the ZnWO4 samples. One of the ZnWO4 crystals has also been tested by ultra-low background gamma spectrometry. The radioactive contaminations of the ZnWO4 samples do not exceed 0.002 â?? 0.8 mBq/kg (depending on the radionuclide), the total alpha activity is in the range: 0.2 - 2 mBq/kg. Particular radioactivity, beta active 65Zn and alpha active 180W, has been detected. The effect of the re-crystallization on the radiopurity of the ZnWO4 crystal has been studied. The radioactive contamination of samples of the ceramic details of the set-ups used in the crystals growth has been checked by low background gamma spectrometry. A project scheme on further improvement of the radiopur...

  10. WoNeF : amlioration, extension et valuation d'une traduction franaise automatique de WordNet

    E-Print Network [OSTI]

    Boyer, Edmond

    evaluation method, demonstrating the validity of the approach. In addition to the main result called Wo

  11. Microsoft Word - EP-WCRR-WO-DOP-0233 Final 7-26-2012.doc

    Office of Environmental Management (EM)

    Request Document No .: -"Q, EP- WCRR- WO-DOP-0233 I Revision No.: 36 . Title: WCRRF Waste Characterization Glovebox Operations I Page 1 of -' Description of requested action...

  12. Titanium alkoxide induced BiOBrBi2WO6 mesoporous nanosheet composites with much enhanced

    E-Print Network [OSTI]

    Cao, Guozhong

    Titanium alkoxide induced BiOBr­Bi2WO6 mesoporous nanosheet composites with much enhanced for the preparation of BiOBr­Bi2WO6 mesoporous nanosheet composites (MNCs) in the presence of titanium isopropoxide, Ti(Oi Pr)4. High resolution transmission electron microscopy, X-ray diffraction, nitrogen adsorption

  13. Alkaline phosphatase, a biochemical marker of cellular differentiation of BeWo choriocarcinoma cell line

    E-Print Network [OSTI]

    Lu, Wei

    1997-01-01T23:59:59.000Z

    Cellular copper homeostasis depends on a Cu-ATPase enzyme in the membrane. Surprisingly, flask-grown BeWo cells do not display ATPase. We found Cu-ATPase is only expressed in differentiated cells such as Caco-2 cells. Since BeWo cells...

  14. Solar Energy Materials & Solar Cells 92 (2008) 821829 Modeling the optical properties of WO3 and WO3SiO2 thin films

    E-Print Network [OSTI]

    Thirumalai, Devarajan

    Solar Energy Materials & Solar Cells 92 (2008) 821­829 Modeling the optical properties of WO3 the optical response of the films in the near-UV and visible region: two interband transitions for energies E

  15. Strain Accommodation By Facile WO6 Octahedral Distortion and Tilting During WO3 Heteroepitaxy on SrTiO3(001)

    SciTech Connect (OSTI)

    Du, Yingge; Gu, Meng; Varga, Tamas; Wang, Chong M.; Bowden, Mark E.; Chambers, Scott A.

    2014-08-27T23:59:59.000Z

    In this paper, we show that compared to other BO6 octahedra in ABO3 structured perovskite oxides, the WO6 octahedra in tungsten trioxide (WO3) can withstand a much larger degree of distortion and tilting to accommodate interfacial strain, which in turn strongly impact the nucleation, structure, and defect formation during the epitaxial growth of WO3 on SrTiO3(001). A meta-stable tetragonal phase can be stabilized by epitaxy and a thickness dependent phase transition (tetragonal to monoclinic) is observed. In contrast to misfit dislocations to accommodate the interfacial stain, the facial WO6 octahedral distortion and tilting give rise to three types of planar defects that affect more than 15 monolayers from the interface. These atomically resolved, unusual interfacial defects may significantly alter the electronic, electrochromic, and mechanical properties of the epitaxial films.

  16. Effect of fluorine, nitrogen, and carbon impurities on the electronic and magnetic properties of WO{sub 3}

    SciTech Connect (OSTI)

    Shein, I. R.; Ivanovskii, A. L. [Russian Academy of Sciences, Institute of Solid State Chemistry (Russian Federation)

    2013-06-15T23:59:59.000Z

    Within electron density functional theory with the use of the Vienna ab-initio simulation package (VASP), the effect of the sp substitutional impurities of fluorine (n-type dopant), nitrogen, and carbon (p-type dopants) on the electronic and magnetic properties of tungsten trioxide WO{sub 3} is studied. It is established that these impurities induce the transformation of tungsten trioxide (nonmagnetic semiconductor) into nonmagnetic metal (WO{sub 3}:F), magnetic semimetal (WO{sub 3}:N), or magnetic metal (WO{sub 3}:C) states.

  17. Characterization of nanosized Al{sub 2}(WO{sub 4}){sub 3}

    SciTech Connect (OSTI)

    Nihtianova, D., E-mail: diana.nihtianova@gmail.com [Institute of Mineralogy and Crystallography, Bulgarian Academy of Sciences, Acad. Georgi Bonchev Str., bl. 107, 1113 Sofia (Bulgaria); Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, Acad. Georgi Bonchev Str., bl. 11, 1113 Sofia (Bulgaria); Velichkova, N., E-mail: veli4kov@svr.igic.bas.bg [Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, Acad. Georgi Bonchev Str., bl. 11, 1113 Sofia (Bulgaria); Nikolova, R., E-mail: rosica.pn@clmc.bas.bg [Institute of Mineralogy and Crystallography, Bulgarian Academy of Sciences, Acad. Georgi Bonchev Str., bl. 107, 1113 Sofia (Bulgaria); Koseva, I., E-mail: ikosseva@svr.igic.bas.bg [Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, Acad. Georgi Bonchev Str., bl. 11, 1113 Sofia (Bulgaria); Yordanova, A., E-mail: a.yordanova@svr.igic.bas.bg [Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, Acad. Georgi Bonchev Str., bl. 11, 1113 Sofia (Bulgaria); Nikolov, V., E-mail: vnikolov@svr.igic.bas.bg [Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, Acad. Georgi Bonchev Str., bl. 11, 1113 Sofia (Bulgaria)

    2011-11-15T23:59:59.000Z

    Graphical abstract: TEM method allows to detect small quantities of impurities not detectable by other methods. In our case impurities of W{sub 5}O{sub 14} are detected in Al{sub 2}(WO{sub 4}){sub 3} nanopowder. Highlights: {yields} Nanosized Al{sub 2}(WO{sub 4}){sub 3} by simple co-precipitation method. {yields} Spherical particles with mean size of 22 nm distributed between 10 and 40 nm at 630 {sup o}C. {yields} XRD, DTA and TEM confirm well defined products with perfect structure. {yields} TEM locality allows detection of impurities not detectable by XRD and DTA. -- Abstract: Nanosized aluminum tungstate Al{sub 2}(WO{sub 4}){sub 3} was prepared by co-precipitation reaction between Na{sub 2}WO{sub 4} and Al(NO{sub 3}){sub 3} aqueous solutions. The powder size and shape, as well as size distribution are estimated after different conditions of powder preparation. The purity of the final product was investigated by XRD and DTA analyses, using the single crystal powder as reference. Between the specimen and the reference no difference was detected. The crystal structure of Al{sub 2}(WO{sub 4}){sub 3} nanosized powder was confirmed by TEM (SAED, HRTEM). In additional, TEM locality allows to detect some W{sub 5}O{sub 14} impurities, which are not visible by conventional X-ray powder diffraction and thermal analyses.

  18. H.sub.2O doped WO.sub.3, ultra-fast, high-sensitivity hydrogen sensors

    DOE Patents [OSTI]

    Liu, Ping (Denver, CO); Tracy, C. Edwin (Golden, CO); Pitts, J. Roland (Lakewood, CO); Lee, Se-Hee (Lakewood, CO)

    2011-03-22T23:59:59.000Z

    An ultra-fast response, high sensitivity structure for optical detection of low concentrations of hydrogen gas, comprising: a substrate; a water-doped WO.sub.3 layer coated on the substrate; and a palladium layer coated on the water-doped WO.sub.3 layer.

  19. Robust ferroelectric state in multiferroic Mn 1 ? x Zn x WO 4

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Chaudhury, R. P.; Ye, F.; Fernandez-Baca, J. A.; Lorenz, B.; Wang, Y. Q.; Sun, Y. Y.; Mook, H. A.; Chu, C. W.

    2011-01-01T23:59:59.000Z

    We report on the remarkably robust ferroelectric state in the multiferroic compound Mn1-xZnxWO?. Substitution of the magnetic Mn²? with nonmagnetic Zn²? reduces the magnetic exchange and provides control of the various magnetic and multiferroic states of MnWO?. Only 5% of Zn substitution results in complete suppression of the frustrated collinear (paraelectric) low-temperature phase. The helical magnetic and ferroelectric phase develops as the ground state. The multiferroic state is stable up to a high level of substitution of more than 50%. The magnetic, thermodynamic, and dielectric properties, as well as the ferroelectric polarization of single crystals of Mn1-xZnxWO?, are studied for different substitutions up to x=0.5. The magnetic phases have been identified in single-crystal neutron-scattering experiments. The ferroelectric polarization scales with the neutron intensity of the incommensurate peak of the helical phase.

  20. Metal-insulator transition in Na{sub x}WO{sub 3}: Photoemission spectromicroscopy study

    SciTech Connect (OSTI)

    Paul, Sanhita, E-mail: raj@iiserkol.ac.in; Ghosh, Anirudha, E-mail: raj@iiserkol.ac.in; Raj, Satyabrata, E-mail: raj@iiserkol.ac.in [Department of Physical Sciences, Indian Institute of Science Education and Research - Kolkata, Mohanpur Campus, Nadia -741252, West Bengal (India)

    2014-04-24T23:59:59.000Z

    We have investigated the validity of percolation model, which is quite often invoked to explain the metal-insulator transition in sodium tungsten bronzes, Na{sub x}WO{sub 3} by photoelectron spectromicroscopy. The spatially resolved direct spectromicroscopic probing on both the insulating and metallic phases of high quality single crystals of Na{sub x}WO{sub 3} reveals the absence of any microscopic inhomogeneities embedded in the system within the experimental limit. Neither any metallic domains in the insulating host nor any insulating domains in the metallic host have been found to support the validity of percolation model to explain the metal-insulator transition in Na{sub x}WO{sub 3}.

  1. Photoluminescence in the Ca{sub x}Sr{sub 1-x}WO{sub 4} system at room temperature

    SciTech Connect (OSTI)

    Porto, S.L. [Laboratorio de Combustiveis e Materiais (LACOM/DQ/CCEN), Universidade Federal da Paraiba, Campus I, Cidade Universitaria, Joao Pessoa, PB, CEP 58059-900 (Brazil); Longo, E. [CMDMC/LIEC, Instituto de Quimica, UNESP-Araraquara, Rua Prof. Francisco Degni s/n, Araraquara, SP, CEP 14800-900 (Brazil); Pizani, P.S.; Boschi, T.M. [Departamento de Fisica, Universidade Federal de Sao Carlos, Sao Carlos, Rodovia Washington Luiz km 235, SP, CEP 13565-905 (Brazil); Simoes, L.G.P. [Centro Multidisciplinar de Desenvolvimento de Materiais Ceramicos (LIEC/DQ), Universidade Federal de Sao Carlos, Rodovia Washington Luiz km 235, Sao Carlos, SP, CEP 13565-905 (Brazil); Lima, S.J.G. [Laboratorio de Solidificacao Rapida, Departamento de Tecnologia Mecanica (LSR/DTM/CT), Universidade Federal da Paraiba, Campus I, Cidade Universitaria, Joao Pessoa, PB, CEP 58059-900 (Brazil); Ferreira, J.M. [Laboratorio de Combustiveis e Materiais (LACOM/DQ/CCEN), Universidade Federal da Paraiba, Campus I, Cidade Universitaria, Joao Pessoa, PB, CEP 58059-900 (Brazil); COAMA, Area de Meio Ambiente, Centro Federal de Educacao Tecnologica da Paraiba, Av. 1o de Maio 720, Jaguaribe, Joao Pessoa, PB, CEP 58015-430 (Brazil); Soledade, L.E.B.; Espinoza, J.W.M.; Cassia-Santos, M.R.; Maurera, M.A.M.A. [Laboratorio de Combustiveis e Materiais (LACOM/DQ/CCEN), Universidade Federal da Paraiba, Campus I, Cidade Universitaria, Joao Pessoa, PB, CEP 58059-900 (Brazil); Paskocimas, C.A. [Departamento de Engenharia Mecanica, Universidade Federal do Rio Grande do Norte, Natal, RN, CEP 59072-970 (Brazil); Santos, I.M.G. [Laboratorio de Combustiveis e Materiais (LACOM/DQ/CCEN), Universidade Federal da Paraiba, Campus I, Cidade Universitaria, Joao Pessoa, PB, CEP 58059-900 (Brazil)], E-mail: ieda@quimica.ufpb.br; Souza, A.G. [Laboratorio de Combustiveis e Materiais (LACOM/DQ/CCEN), Universidade Federal da Paraiba, Campus I, Cidade Universitaria, Joao Pessoa, PB, CEP 58059-900 (Brazil)

    2008-08-15T23:59:59.000Z

    In this work, a study was undertaken about the structural and photoluminescent properties, at room temperature, of powder samples from the Ca{sub x}Sr{sub 1-x}WO{sub 4} (x=0-1.0) system, synthesized by a soft chemical method and heat treated between 400 and 700 deg. C. The material was characterized using Infrared, UV-vis and Raman spectroscopy and XRD. The most intense PL emission was obtained for the sample calcined at 600 deg. C, which is neither highly disordered (400-500 deg. C), nor completely ordered (700 deg. C). Corroborating the role of disorder in the PL phenomenon, the most intense PL response was not observed for pure CaWO{sub 4} or SrWO{sub 4}, but for Ca{sub 0.6}Sr{sub 0.4}WO{sub 4}. The PL emission spectra could be separated into two Gaussian curves. The lower wavelength peak is placed around 530 nm, and the higher wavelength peak at about 690 nm. Similar results were reported in the literature for both CaWO{sub 4} and SrWO{sub 4}. - Graphical abstract: The structural and room temperature photoluminescence of Ca{sub x}Sr{sub 1-x}WO4 synthesized by a soft chemical method was studied. The most intense PL emission was obtained for the sample calcined at 600 deg. C, that is neither highly disordered (400-500 deg. C), nor completely ordered (700 deg. C). Corroborating the role of disorder in the PL phenomenon, the most intense PL response was not observed for pure CaWO{sub 4} or SrWO{sub 4}, but for Ca{sub 0.6}Sr{sub 0.4}WO{sub 4}.

  2. Network model of fluid flow in semi-solid aluminum alloys W.O. Dijkstra a

    E-Print Network [OSTI]

    Vuik, Kees

    Network model of fluid flow in semi-solid aluminum alloys W.O. Dijkstra a , C. Vuik b , L within a semi-solid aluminum alloy. The model consists of a set of connected channels representing; Fluid flow; Aluminum alloys; Permeability; Macrosegregation 1. Introduction Early simulations

  3. The a-WO{sub 3}/a-IrO{sub 2} electrochromic system

    SciTech Connect (OSTI)

    Cogan, S.F.; Rauh, R.D. [EIC Labs., Inc., Norwood, MA (United States)

    1990-12-31T23:59:59.000Z

    This article reviews the electrochemistry and optical switching performance of variable transmittance electrochromic devices based on the a-WO{sub 3}/a-IrO{sub 2} (a = amorphous) combination of electrochromic materials. The review concentrates on past research at EIC Laboratories on a-WO{sub 3}/a-IrO{sub 2} devices containing polymeric proton (H{sup +}) conductors with an ancillary discussion of devices using c-K{sub x}WO{sub 3+(x/2)} and the mixed oxide a-Mo{sub x}W{sub 1{minus}x}O{sub 3} as the primary electrochromic material. Approximately one half of the data presented has not been published previously, with the remaining data taken from articles in earlier SPIE volumes and the journal Solar Energy Materials. In recent years, there has been considerable interest in the development of electrochromic devices for control of solar throughput in building windows and for automotive applications. This review is concerned with complementary electrochromic windows based on cathodically coloring WO{sub 3} in combination with anodically coloring IrO{sub 2}. In the complementary configuration, both electrochromic materials participate in the coloration process, enhancing the efficiency of optical modulation while providing intrinsic charge-balance.

  4. An UV photochromic memory effect in proton-based WO{sub 3} electrochromic devices

    SciTech Connect (OSTI)

    Zhang Yong; Lee, S.-H. [Department of Mechanical Engineering, University of Colorado, Boulder, Colorado 80309 (United States); Mascarenhas, A.; Deb, S. K. [National Renewable Energy Laboratory, 1617 Cole Blvd., Golden, Colorado 80401 (United States)

    2008-11-17T23:59:59.000Z

    We report an UV photochromic memory effect on a standard proton-based WO{sub 3} electrochromic device. It exhibits two memory states, associated with the colored and bleached states of the device, respectively. Such an effect can be used to enhance device performance (increasing the dynamic range), re-energize commercial electrochromic devices, and develop memory devices.

  5. UV Photochromic Memory Effect in Proton-Based WO3 Electrochromic Devices

    SciTech Connect (OSTI)

    Zhang, Y.; Lee, S. H.; Mascarenhas, A.; Deb, S. K.

    2008-12-01T23:59:59.000Z

    We report an UV photochromic memory effect on a standard proton-based WO{sub 3} electrochromic device. It exhibits two memory states, associated with the colored and bleached states of the device, respectively. Such an effect can be used to enhance device performance (increasing the dynamic range), re-energize commercial electrochromic devices, and develop memory devices.

  6. The synthesis and structural characterization of Na[sub 3]WO[sub 3]N

    SciTech Connect (OSTI)

    Elder, S.H. (Cornell Univ., Ithaca, NY (United States) Institut des MJateriaux de Nantes, Nantes (France)); DiSalvo, F.J. (Cornell Univ., Ithaca, NY (United States)); Parise, J.B. (State Univ. of New York at Stony Brook, Stony Brook, NY (United States)); Hriljac, J.A. (Brookhaven National Lab., Upton, NY (United States)); Richardson, J.W. Jr. (Argonne National Lab., IL (United States))

    1994-01-01T23:59:59.000Z

    The authors report the discovery of a new ternary oxynitride, Na[sub 3]WO[sub 3]N. Na[sub 3]WO[sub 3]N is synthesized by exposing a eutectic melt consisting of 1/2Na[sub 2]O:1Na[sub 2]WO[sub 4] to a flow of ammonia gas at 695[degrees]C. The compound crystallizes in the acentric space group Pmn2[sub 1] with a = 7.2481(3) [angstrom], b = 6.2728(3) [angstrom], and c = 56493(2) [angstrom]. The structure was determined from synchrotron X-ray powder diffraction data and refined using the Rietveld analysis on neutron powder diffraction data. It is isostructural to the low temperature form of Li[sub 3]PO[sub 4] which can be derived from an ordered wurtzite structure-type with all the atoms having tetrahedral coordination. Alternatively, the structure can be described as being [open quotes]salt-like[close quotes] consisting of isolated (WO[sub 3]N)[sup [minus]3] tetrahedral polyanions separated by Na[sup +].

  7. Search for 2{\\beta} decay of 116Cd with the help of enriched 116CdWO4 crystal scintillators

    E-Print Network [OSTI]

    Poda, D V; Belli, P; Bernabei, R; Cappella, F; Caracciolo, V; Castellano, S; Chernyak, D M; Cerulli, R; Danevich, F A; d'Angelo, S; Incicchitti, A; Kobychev, V V; Konovalov, S I; Laubenstein, M; Podviyanuk, R B; Polischuk, O G; Shlegel, V N; Tretyak, V I; Umatov, V I; Vasiliev, Ya V

    2014-01-01T23:59:59.000Z

    Cadmium tungstate crystal scintillators enriched in $^{116}$Cd to 82% ($^{116}$CdWO$_4$, total mass of $\\approx$1.2 kg) are used to search for 2$\\beta$ decay of $^{116}$Cd deep underground at the Gran Sasso National Laboratory of the INFN (Italy). The radioactive contamination of the $^{116}$CdWO$_4$ crystals has been studied carefully to reconstruct the background of the detector. The measured half-life of $^{116}$Cd relatively to 2$\

  8. Preparation of hexagonal WO{sub 3} from hexagonal ammonium tungsten bronze for sensing NH{sub 3}

    SciTech Connect (OSTI)

    Szilagyi, Imre Miklos [Materials Structure and Modeling Research Group of the Hungarian Academy of Sciences, Budapest University of Technology and Economics, H-1111 Budapest, Szt. Gellert ter 4 (Hungary)], E-mail: imre.szilagyi@mail.bme.hu; Wang Lisheng; Gouma, Pelagia-Irene [Department of Materials Science and Engineering, 314 Old Engineering Building, SUNY, Stony Brook, NY 11794-2275 (United States); Balazsi, Csaba [Ceramics and Nanocomposites Laboratory, Research Institute for Technical Physics and Materials Science, H-1121 Budapest, Konkoly-Thege ut 29-33 (Hungary); Madarasz, Janos; Pokol, Gyoergy [Department of Inorganic and Analytical Chemistry, Budapest University of Technology and Economics, H-1111 Budapest, Szt. Gellert ter 4 (Hungary)

    2009-03-05T23:59:59.000Z

    Hexagonal tungsten oxide (h-WO{sub 3}) was prepared by annealing hexagonal ammonium tungsten bronze, (NH{sub 4}){sub 0.07}(NH{sub 3}){sub 0.04}(H{sub 2}O){sub 0.09}WO{sub 2.95}. The structure, composition and morphology of h-WO{sub 3} were studied by XRD, XPS, Raman, {sup 1}H MAS (magic angle spinning) NMR, scanning electron microscopy (SEM), and BET-N{sub 2} specific surface area measurement, while its thermal stability was investigated by in situ XRD. The h-WO{sub 3} sample was built up by 50-100 nm particles, had an average specific surface area of 8.3 m{sup 2}/g and was thermally stable up to 450 deg. C. Gas sensing tests showed that h-WO{sub 3} was sensitive to various levels (10-50 ppm) of NH{sub 3}, with the shortest response and recovery times (1.3 and 3.8 min, respectively) to 50 ppm NH{sub 3}. To this NH{sub 3} concentration, the sensor had significantly higher sensitivity than h-WO{sub 3} samples prepared by wet chemical methods.

  9. Synthesis, formation mechanism and sensing properties of WO{sub 3} hydrate nanowire netted-spheres

    SciTech Connect (OSTI)

    Yan, Aihua [State Key Laboratory of Material Processing and Die and Mould Technology, Huazhong University of Science and Technology, Wuhan 430074 (China)] [State Key Laboratory of Material Processing and Die and Mould Technology, Huazhong University of Science and Technology, Wuhan 430074 (China); Xie, Changsheng, E-mail: csxie@mail.hust.edu.cn [State Key Laboratory of Material Processing and Die and Mould Technology, Huazhong University of Science and Technology, Wuhan 430074 (China) [State Key Laboratory of Material Processing and Die and Mould Technology, Huazhong University of Science and Technology, Wuhan 430074 (China); Nanomaterial and Smart Sensor Research Laboratory, Department of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074 (China); Zeng, Dawen [State Key Laboratory of Material Processing and Die and Mould Technology, Huazhong University of Science and Technology, Wuhan 430074 (China)] [State Key Laboratory of Material Processing and Die and Mould Technology, Huazhong University of Science and Technology, Wuhan 430074 (China); Cai, Shuizhou; Hu, Mulin [Nanomaterial and Smart Sensor Research Laboratory, Department of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074 (China)] [Nanomaterial and Smart Sensor Research Laboratory, Department of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074 (China)

    2010-10-15T23:59:59.000Z

    Tungsten oxide hydrate nanowire netted-spheres were successfully synthesized in the glycol solution using a facile solvothermal approach. The nanowires with uniform diameter of 4-6 nm are actually a kind of tungsten oxide hydrate/surfactant hybrid materials. The influence of surfactant, solvent, time and temperature on tailoring morphology was investigated in detail. The possible formation process of WO{sub 3} hydrate nanowire netted-sphere was proposed. Sensing properties of such WO{sub 3} hydrate sensor show that the desirable sensing characteristics towards 100 ppm ammonia gas at 320 {sup o}C were obtained, such as rapid response (18.3 s), high sensitivity, good reproducibility and stability.

  10. Nanocrystalline Cs{sub x}WO{sub 3} particles: Effects of N{sub 2} annealing on microstructure and near-infrared shielding characteristics

    SciTech Connect (OSTI)

    Liu, Jing-Xiao, E-mail: drliu-shi@dlpu.edu.cn [School of Textile and Material Engineering, Dalian Polytechnic University, Dalian 116034 (China); Institute of Multidisciplinary Research for Advanced Material, Tohoku University, Sendai, 980-8577,Japan (Japan); Shi, Fei; Dong, Xiao-Li; Xu, Qiang [School of Textile and Material Engineering, Dalian Polytechnic University, Dalian 116034 (China); Yin, Shu; Sato, Tsugio [Institute of Multidisciplinary Research for Advanced Material, Tohoku University, Sendai, 980-8577,Japan (Japan)

    2013-10-15T23:59:59.000Z

    In order to further improve the near-infrared shielding properties of cesium tungsten bronze (Cs{sub x}WO{sub 3}) for solar filter applications, Cs{sub x}WO{sub 3} particles were prepared by solvothermal reaction method and the effects of nitrogen annealing on the microstructure and near-infrared shielding properties of Cs{sub x}WO{sub 3} were investigated. The obtained Cs{sub x}WO{sub 3} samples were characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, X-ray photoelectron spectroscopy and spectrophotometer. The results indicate that nanosheet-like Cs{sub x}WO{sub 3} particles with hexagonal structure began to transform into nanorods after annealed at temperature higher than 600 °C. The near-infrared shielding properties of Cs{sub x}WO{sub 3} particles could be further improved by N{sub 2} annealing at 500–700 °C. Particularly, the 500 °C-annealed Cs{sub x}WO{sub 3} samples in the N{sub 2} atmosphere showed best near-infrared shielding properties. It was suggested that the excellent near-infrared shielding ability of the 500 °C-annealed Cs{sub x}WO{sub 3} samples is correlated with its minimum O/W atomic ratio and most oxygen vacancies. Highlights: • N{sub 2} annealing could further improve the near-infrared (NIR) shielding of Cs{sub x}WO{sub 3}. • Effects of N{sub 2} annealing on microstructure and NIR shielding of Cs{sub x}WO{sub 3} were studied. • The 500 °C-N{sub 2}-annealed Cs{sub x}WO{sub 3} exhibited minimum O/W ratio and most oxygen vacancies. • The 500 °C-N{sub 2}-annealed Cs{sub x}WO{sub 3} particles exhibited best NIR shielding properties.

  11. Radiation hardness qualification of PbWO4 scintillation crystals for the CMS Electromagnetic Calorimeter

    E-Print Network [OSTI]

    The CMS Electromagnetic Calorimeter Group; P. Adzic; N. Almeida; D. Andelin; I. Anicin; Z. Antunovic; R. Arcidiacono; M. W. Arenton; E. Auffray; S. Argiro; A. Askew; S. Baccaro; S. Baffioni; M. Balazs; D. Bandurin; D. Barney; L. M. Barone; A. Bartoloni; C. Baty; S. Beauceron; K. W. Bell; C. Bernet; M. Besancon; B. Betev; R. Beuselinck; C. Biino; J. Blaha; P. Bloch; A. Borisevitch; A. Bornheim; J. Bourotte; R. M. Brown; M. Buehler; P. Busson; B. Camanzi; T. Camporesi; N. Cartiglia; F. Cavallari; A. Cecilia; P. Chang; Y. H. Chang; C. Charlot; E. A. Chen; W. T. Chen; Z. Chen; R. Chipaux; B. C. Choudhary; R. K. Choudhury; D. J. A. Cockerill; S. Conetti; S. Cooper; F. Cossutti; B. Cox; D. G. Cussans; I. Dafinei; D. R. Da Silva Di Calafiori; G. Daskalakis; A. David; K. Deiters; M. Dejardin; A. De Benedetti; G. Della Ricca; D. Del Re; D. Denegri; P. Depasse; J. Descamps; M. Diemoz; E. Di Marco; G. Dissertori; M. Dittmar; L. Djambazov; M. Djordjevic; L. Dobrzynski; A. Dolgopolov; S. Drndarevic; G. Drobychev; D. Dutta; M. Dzelalija; A. Elliott-Peisert; H. El Mamouni; I. Evangelou; B. Fabbro; J. L. Faure; J. Fay; A. Fedorov; F. Ferri; D. Franci; G. Franzoni; K. Freudenreich; W. Funk; S. Ganjour; S. Gascon; M. Gataullin; F. X. Gentit; A. Ghezzi; A. Givernaud; S. Gninenko; A. Go; B. Gobbo; N. Godinovic; N. Golubev; P. Govoni; N. Grant; P. Gras; M. Haguenauer; G. Hamel de Monchenault; M. Hansen; J. Haupt; H. F. Heath; B. Heltsley; W. Hintz; R. Hirosky; P. R. Hobson; A. Honma; G. W. S. Hou; Y. Hsiung; M. Huhtinen; B. Ille; Q. Ingram; A. Inyakin; P. Jarry; C. Jessop; D. Jovanovic; K. Kaadze; V. Kachanov; S. Kailas; S. K. Kataria; B. W. Kennedy; P. Kokkas; T. Kolberg; M. Korjik; N. Krasnikov; D. Krpic; Y. Kubota; C. M. Kuo; P. Kyberd; A. Kyriakis; M. Lebeau; P. Lecomte; P. Lecoq; A. Ledovskoy; M. Lethuillier; S. W. Lin; W. Lin; V. Litvine; E. Locci; E. Longo; D. Loukas; P. D. Luckey; W. Lustermann; Y. Ma; M. Malberti; J. Malclès; D. Maletic; N. Manthos; Y. Maravin; C. Marchica; N. Marinelli; A. Markou; C. Markou; M. Marone; V. Matveev; C. Mavrommatis; P. Meridiani; P. Milenovic; P. Miné; O. Missevitch; A. K. Mohanty; F. Moortgat; P. Musella; Y. Musienko; A. Nardulli; J. Nash; P. Nedelec; P. Negri; H. B. Newman; A. Nikitenko; F. Nessi-Tedaldi; M. M. Obertino; G. Organtini; T. Orimoto; M. Paganoni; P. Paganini; A. Palma; L. Pant; A. Papadakis; I. Papadakis; I. Papadopoulos; R. Paramatti; P. Parracho; N. Pastrone; J. R. Patterson; F. Pauss; J-P. Peigneux; E. Petrakou; D. G. Phillips II; P. Piroué; F. Ptochos; I. Puljak; A. Pullia; T. Punz; J. Puzovic; S. Ragazzi; S. Rahatlou; J. Rander; P. A. Razis; N. Redaelli; D. Renker; S. Reucroft; P. Ribeiro; C. Rogan; M. Ronquest; A. Rosowsky; C. Rovelli; P. Rumerio; R. Rusack; S. V. Rusakov; M. J. Ryan; L. Sala; R. Salerno; M. Schneegans; C. Seez; P. Sharp; C. H. Shepherd-Themistocleous; J. G. Shiu; R. K. Shivpuri; P. Shukla; C. Siamitros; D. Sillou; J. Silva; P. Silva; A. Singovsky; Y. Sirois; A. Sirunyan; V. J. Smith; F. Stöckli; J. Swain; T. Tabarelli de Fatis; M. Takahashi; V. Tancini; O. Teller; K. Theofilatos; C. Thiebaux; V. Timciuc; C. Timlin; M. Titov; A. Topkar; F. A. Triantis; S. Troshin; N. Tyurin; K. Ueno; A. Uzunian; J. Varela; P. Verrecchia; J. Veverka; T. Virdee; M. Wang; D. Wardrope; M. Weber; J. Weng; J. H. Williams; Y. Yang; I. Yaselli; R. Yohay; A. Zabi; S. Zelepoukine; J. Zhang; L. Y. Zhang; K. Zhu; R. Y. Zhu

    2009-12-22T23:59:59.000Z

    Ensuring the radiation hardness of PbWO4 crystals was one of the main priorities during the construction of the electromagnetic calorimeter of the CMS experiment at CERN. The production on an industrial scale of radiation hard crystals and their certification over a period of several years represented a difficult challenge both for CMS and for the crystal suppliers. The present article reviews the related scientific and technological problems encountered.

  12. Composite WO3/TiO2 nanostructures for high electrochromic activity.

    SciTech Connect (OSTI)

    Reyes, Karla Rosa; Stephens, Zachary Dan.; Robinson, David B.

    2013-05-01T23:59:59.000Z

    A composite material consisting of TiO2 nanotubes (NTs) with WO3 electrodeposited homogeneously on its surface has been fabricated, detached from its substrate, and attached to a fluorine-doped tin oxide film on glass for application to electrochromic (EC) reactions. A paste of TiO2 made from commercially available TiO2 nanoparticles creates an interface for the TiO2 NT film to attach to the FTO glass, which is conductive and does not cause solution-phase ions in an electrolyte to bind irreversibly with the material. The effect of NT length on the current density and the EC contrast of the material were studied. The EC redox reaction seen in this material is diffusion- limited, having relatively fast reaction rates at the electrode surface. The composite WO3/TiO2 nanostructures showed higher ion storage capacity, better stability, enhanced EC contrast and longer memory time compared with the pure WO3 and TiO2.

  13. Radiopurity of CaWO$_4$ Crystals for Direct Dark Matter Search with CRESST and EURECA

    E-Print Network [OSTI]

    Münster, A; Angloher, G; Bento, A; Bucci, C; Canonica, L; Erb, A; Feilitzsch, F v; Gorla, P; Gütlein, A; Hauff, D; Jochum, J; Kraus, H; Lanfranchi, J -C; Laubenstein, M; Loebell, J; Ortigoza, Y; Petricca, F; Potzel, W; Pröbst, F; Puimedon, J; Reindl, F; Roth, S; Rottler, K; Sailer, C; Schäffner, K; Schieck, J; Scholl, S; Schönert, S; Seidel, W; Stodolsky, L; Strandhagen, C; Strauss, R; Tanzke, A; Uffinger, M; Ulrich, A; Usherov, I; Wawoczny, S; Willers, M; Wüstrich, M; Zöller, A

    2014-01-01T23:59:59.000Z

    The direct dark matter search experiment CRESST uses scintillating CaWO$_4$ single crystals as targets for possible WIMP scatterings. An intrinsic radioactive contamination of the crystals as low as possible is crucial for the sensitivity of the detectors. In the past CaWO$_4$ crystals operated in CRESST were produced by institutes in Russia and the Ukraine. Since 2011 CaWO$_4$ crystals have also been grown at the crystal laboratory of the Technische Universit\\"at M\\"unchen (TUM) to better meet the requirements of CRESST and of the future tonne-scale multi-material experiment EURECA. The radiopurity of the raw materials and of first TUM-grown crystals was measured by ultra-low background $\\gamma$-spectrometry. Two TUM-grown crystals were also operated as low-temperature detectors at a test setup in the Gran Sasso underground laboratory. These measurements were used to determine the crystals' intrinsic $\\alpha$-activities which were compared to those of crystals produced at other institutes. The total $\\alpha$...

  14. Lattice and electronic contributions to the refractive index of CuWO{sub 4}

    SciTech Connect (OSTI)

    Ruiz-Fuertes, J., E-mail: ruiz-fuertes@kristall.uni-frankfurt.de [Geowissenschaften, Goethe-Universität, Altenhöferallee 1, 60438 Frankfurt am Main (Germany); Malta-Consolider Team, Departamento de Física Aplicada-ICMUV, Universitat de València, Dr. Moliner 50, 46100 Burjassot (Spain); Pellicer-Porres, J.; Segura, A. [Malta-Consolider Team, Departamento de Física Aplicada-ICMUV, Universitat de València, Dr. Moliner 50, 46100 Burjassot (Spain); Rodríguez-Hernández, P.; Muñoz, A. [Malta-Consolider Team Departamento de Física Fundamental II, Instituto de Materiales y Nanotecnología, Universidad de La Laguna, La Laguna, 38205 Tenerife (Spain)

    2014-09-14T23:59:59.000Z

    We report an investigation of the refractive index dispersion and anisotropy in CuWO{sub 4} by means of interference measurements in two extinction directions from mid infrared to the visible region of the energy spectrum. The analysis of the refractive index dispersion yields ?(?)?=?4.5(1) for light polarization parallel to the c-axis and ?(?)?=?5.3(1) with respect to the other extinction axis. In addition, we report reflectance measurements carried out from the far infrared to the near ultraviolet to study the lattice and electronic contributions to the refractive index of CuWO{sub 4}. We have determined the wavenumbers of nine infrared active lattice modes and compared them with previous ab initio calculations. The value of the Penn gap, 7?eV, as well as the origin of a structure observed at 4.4?eV in the reflectance spectrum, is discussed in the context of the CuWO{sub 4} electronic structure.

  15. Opportunities and Challenges in Science and Technology of WO3 for Electrochromic and Related Applications (Invited Paper)

    SciTech Connect (OSTI)

    Deb, S. K.

    2008-02-01T23:59:59.000Z

    Since the discovery of the electrochromic (EC) effect in transition metal oxides in the mid-1960s, intense research and development work spanning four decades has led to many exciting developments in the science and technology of this class of materials. Tungsten oxide (WO{sub 3}) has emerged as one of the key materials, not only for EC devices, but also for many other related applications. After many years of technology development efforts, WO{sub 3}-based EC 'smart windows' have finally emerged as a viable commercial product. In spite of enormous progress being made on the structural, electrical, and optical properties of amorphous and crystalline WO{sub 3}, a detailed understanding of the EC effect in this material still remains somewhat qualitative. Although theoretical models based on intervalence charge transfer and polaron formation have been widely accepted, these models are still unable to explain some of the experimental results on the coloration phenomena. The coloration in WO{sub 3} is a structure-sensitive phenomenon, and excess electrons can be either localized or delocalized. The presence of structural defects such as oxygen vacancies, impurities, and degree of disorder plays a crucial role in determining the coloration efficiency. Although significant progress has been made in recent years on the calculation of electronic structure and defect properties of both amorphous and crystalline WO{sub 3}, the structural complexity of the material presents many challenges and opportunities for theoretical computation. The unique ability to induce bistable optical and electrical properties in WO{sub 3} by a variety of excitation sources has led to many devices of significant technological interest. Some of the applications currently being pursued include the photoelectrochemical cell for solar energy conversion and storage; photoelectrochemical splitting of water to generate hydrogen; chemical and biological sensors based on the gasochromic effect; photo- and electrocatalysts for a variety of chemical reactions; demonstration of high-temperature (91 K) superconductivity in WO{sub 3} doped with H, Na, and K; synthesis of a new class of hybrid organic/inorganic (WO{sub 3}) materials; and application in ultra-high-resolution electron beam lithography. The emergence of nanostructured WO{sub 3} in recent years will undoubtedly provide new opportunities and significant impact to many of these technologies. This paper presents a brief overview of some of the key research issues the author believes will impact the science and technology of this exciting material.

  16. Electrochromic coloration efficiency of a-WO[sub 3[minus]y] thin films as a function of oxygen deficiency

    SciTech Connect (OSTI)

    Lee, S.; Cheong, H.M.; Tracy, C.E.; Mascarenhas, A.; Czanderna, A.W.; Deb, S.K. (National Renewable Energy Laboratory, Golden, Colorado 80401 (United States))

    1999-09-01T23:59:59.000Z

    We report on how electrochromic coloration is affected by oxygen deficient stoichiometries in sputtered amorphous tungsten oxide (a-WO[sub 3[minus]y]) films. The electrochromic coloration efficiency increases with increasing oxygen deficiency in (a-WO[sub 3[minus]y]) films. No coloration is observed in nearly stoichiometric WO[sub 3] films. Raman spectroscopic studies reveal that the number of W[sup 5+] states generated with lithium insertion increases with the oxygen deficiency. Furthermore, there are no Raman peaks resulting from W[sup 5+] states in lithiated a-WO[sub 3[minus]y] films with near perfect stoichiometry, which is consistent with the absence of electrochromic coloration in those films. We conclude that the coloration efficiency of a-WO[sub 3[minus]y] films depends on the number of the W[sup 5+] states generated by lithium insertion and that the oxygen deficiency plays an important role in generating the W[sup 5+] states with lithium insertion. [copyright] [ital 1999 American Institute of Physics.

  17. Preparation and characterization of spray deposited n-type WO{sub 3} thin films for electrochromic devices

    SciTech Connect (OSTI)

    Sivakumar, R.; Moses Ezhil Raj, A.; Subramanian, B.; Jayachandran, M.; Trivedi, D.C.; Sanjeeviraja, C

    2004-08-03T23:59:59.000Z

    The n-type tungsten oxide (WO{sub 3}) polycrystalline thin films have been prepared at an optimized substrate temperature of 250 deg. C by spray pyrolysis technique. Precursor solution of ammonium tungstate ((NH{sub 4}){sub 2}WO{sub 4}) was sprayed onto the well cleaned, pre-heated fluorine doped tin oxide coated (FTO) and glass substrates with a spray rate of 15 ml/min. The structural, surface morphological and optical properties of the as-deposited WO{sub 3} thin films were studied. Mott-Schottky (M-S) studies of WO{sub 3}/FTO electrodes were conducted in Na{sub 2}SO{sub 4} solution to identify their nature and extract semiconductor parameters. The electrochromic properties of the as-deposited and lithiated WO{sub 3}/FTO thin films were analyzed by employing them as working electrodes in three electrode electrochemical cell using an electrolyte containing LiClO{sub 4} in propylene carbonate (PC) solution.

  18. Electrical characterization of H{sub 2}S adsorption on hexagonal WO{sub 3} nanowire at room temperature

    SciTech Connect (OSTI)

    Liu, Binquan; Tang, Dongsheng, E-mail: dstang@hunnu.edu.cn; Zhou, Yong; Yin, Yanling; Peng, Yuehua; Zhou, Weichang; Qin, Zhu'ai; Zhang, Yong [Key Laboratory of Low-dimensional Quantum Structures and Quantum Control of Ministry of Education, College of Physics and Information Science, Hunan Normal University, Changsha 410081 (China)

    2014-10-28T23:59:59.000Z

    We have characterized the electrical transport properties of Au/WO{sub 3} nanowire/Au devices in ambient air and gaseous H{sub 2}S to investigate the adsorption kinetics of H{sub 2}S molecules on the surface of WO{sub 3} nanowire at room temperature. The WO{sub 3} nanowire devices exhibit increasing linear conductance and electrical hysteresis in H{sub 2}S. Furthermore, the contact type between Au electrode and WO{sub 3} nanowire can be converted from original ohmic/Schottky to Schottky/ohmic after being exposed to H{sub 2}S. These results suggest that adsorbed H{sub 2}S molecules are oxidized by holes to form hydrogen ions and S atoms, which will result in formation of hydrogen tungsten bronze and desorption of previously chemically adsorbed H{sub 2}O molecules. Adsorbed H{sub 2}S molecules can also oxidize previously adsorbed and ionized oxygen, which will release the electrons from the ionized oxygen and then weaken upward band bending at the surface of WO{sub 3} nanowire.

  19. Chemical Engineering Science, Vol. 45, No. 7, pp. 1719-1731.1990. ooo9-2509/90 53.00 + 0.00 Printed in Grca~ Britain. Q 1wo Pergamon Press plc

    E-Print Network [OSTI]

    Aksay, Ilhan A.

    in Grca~ Britain. Q 1wo Pergamon Press plc SIMULTANEOUS MOMENTUM, HEAT AND MASS TRANSFER WITH CHEMICAL

  20. In-situ observation of self-regulated switching behavior in WO{sub 3-x} based resistive switching devices

    SciTech Connect (OSTI)

    Hong, D. S.; Wang, W. X.; Chen, Y. S., E-mail: yschen@aphy.iphy.ac.cn; Sun, J. R.; Shen, B. G. [Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academic of Sciences, Beijing 100190 (China)

    2014-09-15T23:59:59.000Z

    The transmittance of tungsten oxides can be adjusted by oxygen vacancy (V{sub o}) concentration due to its electrochromic property. Here, we report an in-situ observation of resistive switching phenomenon in the oxygen-deficient WO{sub 3-x} planar devices. Besides directly identifying the formation/rupture of dark-colored conductive filaments in oxide layer, the stripe-like WO{sub 3-x} device demonstrated self-regulated switching behavior during the endurance testing, resulting in highly consistent switching parameters after a stabilizing process. For very high V{sub o}s mobility was demonstrated in the WO{sub 3-x} film by the pulse experiment, we suggested that the electric-field-induced homogeneous migration of V{sub o}s was the physical origin for such unique switching characteristics.

  1. Electron microscopy analyses and electrical properties of the layered Bi{sub 2}WO{sub 6} phase

    SciTech Connect (OSTI)

    Taoufyq, A. [Institut Matériaux Microélectronique et Nanosciences de Provence, IM2NP, UMR CNRS 7334, Université du Sud Toulon-Var, BP 20132, 83957, La Garde Cedex (France); Laboratoire Matériaux et Environnement LME, Faculté des Sciences, Université Ibn Zohr, BP 8106, Cité Dakhla, Agadir, Maroc (Morocco); Département d‘Études des Réacteurs, Laboratoire Dosimétrie Capteurs Instrumentation, CEA Cadarache (France); Société CESIGMA—Signals and Systems, 1576 Chemin de La Planquette, F 83 130 LA GARDE (France); Ait Ahsaine, H. [Laboratoire Matériaux et Environnement LME, Faculté des Sciences, Université Ibn Zohr, BP 8106, Cité Dakhla, Agadir, Maroc (Morocco); Patout, L. [Institut Matériaux Microélectronique et Nanosciences de Provence, IM2NP, UMR CNRS 7334, Université du Sud Toulon-Var, BP 20132, 83957, La Garde Cedex (France); Benlhachemi, A.; Ezahri, M. [Laboratoire Matériaux et Environnement LME, Faculté des Sciences, Université Ibn Zohr, BP 8106, Cité Dakhla, Agadir, Maroc (Morocco); and others

    2013-07-15T23:59:59.000Z

    The bismuth tungstate Bi{sub 2}WO{sub 6} was synthesized using a classical coprecipitation method followed by a calcination process at different temperatures. The samples were characterized by X-ray diffraction, simultaneous thermogravimetry and differential thermal analysis (TGA/DTA), scanning and transmission electron microscopy (SEM, TEM) analyses. The Rietveld analysis and electron diffraction clearly confirmed the Pca2{sub 1} non centrosymmetric space group previously proposed for this phase. The layers Bi{sub 2}O{sub 2}{sup 2+} and WO{sub 4}{sup 2?} have been directly evidenced from the HRTEM images. The electrical properties of Bi{sub 2}WO{sub 6} compacted pellets systems were determined from electrical impedance spectrometry (EIS) and direct current (DC) analyses, under air and argon, between 350 and 700 °C. The direct current analyses showed that the conduction observed from EIS analyses was mainly ionic in this temperature range, with a small electronic contribution. Electrical change above the transition temperature of 660 °C is observed under air and argon atmospheres. The strong conductivity increase observed under argon is interpreted in terms of formation of additional oxygen vacancies coupled with electron conduction. - Graphical abstract: High resolution transmission electron microscopy: inverse fast Fourier transform giving the layered structure of the Bi{sub 2}WO{sub 6} phase, with a representation of the cell dimensions (b and c vectors). The Bi{sub 2}O{sub 2}{sup 2+} and WO{sub 4}{sup 2?} sandwiches are visible in the IFFT image. - Highlights: • Using transmission electron microscopy, we visualize the layered structure of Bi{sub 2}WO{sub 6}. • Electrical analyses under argon gas show some increase in conductivity. • The phase transition at 660 °C is evidenced from electrical modification.

  2. Quasi-1D Hyperbranched WO3 Nanostructures for Low Voltage Photoelectrochemical Water-Splitting

    E-Print Network [OSTI]

    Balandeh, Mehrdad; Mezzetti, Alessandro; Tacca, Alessandra; Leonardi, Silvia; Marra, Gianluigi; Divitini, Giorgio; Ducati, Caterina; Meda, Laura; Di Fonzo, Fabio

    2015-02-02T23:59:59.000Z

    standard fuels. The production of hydrogen via solar energy stands as one of the most promising answers to the problem, especially given the recent development in the field of hydrogen- based fuel cells. Photoelectrochemical (PEC) water-splitting provides... ) efficiency.32 Photoanodes made by WO3 nanoparticles33,34 have been thoroughly studied and optimized, reaching photocurrents up to the range of 2.5 mA/cm2 with layers as thin as 2.5 ?m.35 Although well performing, nanoparticle films require a high applied...

  3. Effects of surface porosity on tungsten trioxide (WO{sub 3}) films' electrochromic performance

    SciTech Connect (OSTI)

    Lee, W.J.; Fang, Y.K.; Ho, J.J.; Hsieh, W.T.; Ting, S.F.; Huang, Daoyang; Ho, F.C.

    2000-02-01T23:59:59.000Z

    In this paper, the correlation between the electrochromic performance and the surface morphology of the tungsten trioxide (WO{sub 3}) thin films sputtered by dc reactive magnetron sputtering with widely varying target-substrate distances was investigated. It is found that the optical density change ({Delta}OD) of films is strongly affected by the target-substrate distance. The coloration efficiency (CE) at 633 nm was also found to be sensitive to the target-substrate distance, with 16 cm{sup 2}/C of film sputtered at 6 cm and 50 cm{sup 2}/C at 18 cm. X-ray diffraction showed that the crystal structure of films was amorphous. By using atomic force microscope to identify the surface porosity of the sputtered WO{sub 3} films, the authors found that the film at longer target-substrate distance was rough, porous, and having a cone-shaped columns morphology, this offering a good electrochromic performance for opto-switching applications.

  4. Interface electronic structures of organic light-emitting diodes with WO3 interlayer: A study by photoelectron spectroscopy

    E-Print Network [OSTI]

    Kim, Sehun

    Interface electronic structures of organic light-emitting diodes with WO3 interlayer: A study injec- tion and transport layers in an organic light-emitting diode (OLED) structure has been studied B.V. All rights reserved. 1. Introduction OLEDs (organic light-emitting diodes) are display de

  5. HomEToWN: Mumbai, India WoRK HiSToRY: The Coca-Cola

    E-Print Network [OSTI]

    Mather, Patrick T.

    HomEToWN: Mumbai, India WoRK HiSToRY: The Coca-Cola Company, India EDUCATioN: Bachelor's in food. "Working in the quality assurance and control department of The Coca-Cola Company made me realize how much

  6. Raman gain from waveguides inscribed in KGd,,WO4...2 by high repetition rate femtosecond laser

    E-Print Network [OSTI]

    -order nonlinear susceptibility, high ther- mal conductivity, and strong Raman conversion properties. KGW has potential for enhanced non- linear device performance through longer interaction lengths with high amorphous glasses8 and crystalline materials such as lithium niobate,9 quartz,10 Ti:sapphire,11 and KY WO4 2

  7. Macro-and Microscale Waterflooding Performances of Crudes which form w/o Emulsions upon Mixing with Brines

    E-Print Network [OSTI]

    Firoozabadi, Abbas

    Macro- and Microscale Waterflooding Performances of Crudes which form w/o Emulsions upon Mixing with Brines N. Rezaei and A. Firoozabadi*,, Reservoir Engineering Research Institute, 595 Lytton Avenue, Palo ABSTRACT: We study the micro- and macroscale waterflooding performances of unusual crudes which naturally

  8. RAPID/Roadmap/18-FD-b | Open Energy Information

    Open Energy Info (EERE)

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  1. RAPID/Roadmap/8-FD-b | Open Energy Information

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  2. Photoresponse in thin films of WO{sub 3} grown by pulsed laser deposition

    SciTech Connect (OSTI)

    Roy Moulik, Samik [Unit for Nanoscience, Department of Condensed Matter Physics and Material Sciences, S. N. Bose National Centre for Basic Sciences, Kolkata (India); ICON Analytical Equipment Pvt. Ltd., Kolkata (India); Samanta, Sudeshna; Ghosh, Barnali, E-mail: barnali@bose.res.in [Unit for Nanoscience, Department of Condensed Matter Physics and Material Sciences, S. N. Bose National Centre for Basic Sciences, Kolkata (India)

    2014-06-09T23:59:59.000Z

    We report, the photoresponse behaviour of Tungsten trioxide (WO{sub 3}) films of different surface morphology, grown by using pulsed laser deposition (PLD). The Growth parameters for PLD were changed for two substrates SiO{sub 2}/Si (SO) and SrTiO{sub 3} (STO), such a way which, result nanocrystalline film on SO and needle like structured film on STO. The photoresponse is greatly modified in these two films because of two different surface morphologies. The nanocrystalline film (film on SO) shows distinct photocurrent (PC) ON/OFF states when light was turned on/off, the enhancement of PC is ?27%. Whereas, the film with needle like structure (film on STO) exhibits significantly enhanced persistent photocurrent even in light off condition, in this case, the enhancement of PC???50% at room temperature at lowest wavelength (??=?360?nm) at a nominal bias voltage of 0.1 V.

  3. Exploration on anion ordering, optical properties and electronic structure in K{sub 3}WO{sub 3}F{sub 3} elpasolite

    SciTech Connect (OSTI)

    Atuchin, V.V. [Laboratory of Optical Materials and Structures, Institute of Semiconductor Physics, SB RAS, Novosibirsk 630090 (Russian Federation); Isaenko, L.I. [Laboratory of Crystal Growth, Institute of Geology and Mineralogy, SB RAS, Novosibirsk 630090 (Russian Federation); Kesler, V.G. [Laboratory of Physical Principles for Integrated Microelectronics, Institute of Semiconductor Physics, Novosibirsk 630090 (Russian Federation); Lin, Z.S., E-mail: zslin@mail.ipc.ac.cn [Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, P.O. Box 2711, Beijing 100190 (China); Molokeev, M.S. [Laboratory of Crystal Physics, Institute of Physics, SB RAS, Krasnoyarsk 660036 (Russian Federation); Yelisseyev, A.P.; Zhurkov, S.A. [Laboratory of Crystal Growth, Institute of Geology and Mineralogy, SB RAS, Novosibirsk 630090 (Russian Federation)

    2012-03-15T23:59:59.000Z

    Room-temperature modification of potassium oxyfluorotungstate, G2-K{sub 3}WO{sub 3}F{sub 3}, has been prepared by low-temperature chemical route and single crystal growth. Wide optical transparency range of 0.3-9.4 {mu}m and forbidden band gap E{sub g}=4.32 eV have been obtained for G2-K{sub 3}WO{sub 3}F{sub 3} crystal. Meanwhile, its electronic structure has been calculated with the first-principles calculations. The good agreement between the theorectical and experimental results have been achieved. Furthermore, G2-K{sub 3}WO{sub 3}F{sub 3} is predicted to possess the relatively large nonlinear optical coefficients. - Graphical abstract: Using the cm-size K{sub 3}WO{sub 3}F{sub 3} crystal (left upper), the transmission spectrum (right upper) and XPS valence electronic states (left lower) were measured, agreed with the ab initio results (right lower). Highlights: Black-Right-Pointing-Pointer The cm-size G2-K{sub 3}WO{sub 3}F{sub 3} single crystals are obtained. Black-Right-Pointing-Pointer Optical absorption edge and transmission range are defined for G2-K{sub 3}WO{sub 3}F{sub 3} crystal. Black-Right-Pointing-Pointer Crystal structures of all known K{sub 3}WO{sub 3}F{sub 3} polymorph modifications are determined. Black-Right-Pointing-Pointer Experimental electronic structure is consistent with the first-principles result. Black-Right-Pointing-Pointer G2-K{sub 3}WO{sub 3}F{sub 3} is predicted as a crystal with large NLO coefficients.

  4. Enhancement of methanol electrocatalytic oxidation on platinized WO{sub 3}–TiO{sub 2} composite electrode under visible light irradiation

    SciTech Connect (OSTI)

    Wang, Caiqin [College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123 (China); Xinjiang Key Laboratory of Electronic Information Materials and Devices, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi 830011 (China); Jiang, Fengxing [College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123 (China); Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science and Technology Normal University, Nanchang 330013 (China); Zhou, Rong [College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123 (China); Xinjiang Key Laboratory of Electronic Information Materials and Devices, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi 830011 (China); Du, Yukou, E-mail: duyk@suda.edu.cn [College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123 (China); Xinjiang Key Laboratory of Electronic Information Materials and Devices, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi 830011 (China); Yang, Ping [College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123 (China); Wang, Chuanyi, E-mail: cywang@ms.xjb.ac.cn [Xinjiang Key Laboratory of Electronic Information Materials and Devices, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi 830011 (China); Xu, Jingkun, E-mail: xujingkun@tsinghua.org.cn [Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science and Technology Normal University, Nanchang 330013 (China)

    2013-03-15T23:59:59.000Z

    Highlights: ? A ternary composite catalyst of Pt–WO{sub 3}–TiO{sub 2} has been synthesized. ? The introduction of WO{sub 3} extends its absorption edge to visible light region. ? The electrode displays high electrocatalytic activity. ? With visible light irradiation, its electrocatalytic activity increases 70%. - Abstract: A ternary composite catalyst of Pt–WO{sub 3}–TiO{sub 2} has been successfully prepared by a chemical method. The prepared composite was systematically characterized by UV–vis diffuse reflectance absorption spectra (DRS), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), and transmission electron microscopy (TEM). The electrocatalytic properties of Pt–WO{sub 3}–TiO{sub 2} for methanol oxidation in an alkaline medium were evaluated by the cyclic voltammetry (CV) and chronoamperometry (CA) with or without visible light irradiation. Compared with the pure TiO{sub 2}, the introduction of WO{sub 3} extends its absorption edge to visible light region. Under visible light illumination, the Pt–WO{sub 3}–TiO{sub 2} composite catalyst exhibits higher electrocatalytic activity toward methanol oxidation in comparison with its counterpart, the pure Pt–TiO{sub 2} catalyst.

  5. Carrier-mediated transport of valproic acid in BeWo cells, a human trophoblast cell line

    E-Print Network [OSTI]

    Utoguchi, Naoki; Audus, Kenneth L.

    2000-01-01T23:59:59.000Z

    et al., 1998), asymmetric transferrin transport (Van der Ende et al., 1990; Cerneus et al., 1993), asymmetric fatty acid transport (Liu et al., 1997), choline uptake (Eaton and Sooranna, 1998a), glucose modulation of arginine transport (Eaton... Costar Corporation for support of the Cellular and Molecular Biopharmaceutics Handling Laboratory. Utoguchi, N. and Audus, K.L. (2000) Carrier-mediated transport of valproic acid in BeWo cells, a human trophoblast cell line. Int. J. Pharm. 195, 115...

  6. Low-Temperature Ozone Exposure Technique to Modulate the Stoichiometry of WO(x) Nanorods and Optimize the Electrochromic Performance

    SciTech Connect (OSTI)

    Lin, F.; Li, C. P.; Chen, G.; Tenent, R. C.; Wolden, C. A.; Gillaspie, D. T.; Dillon, A. C.; Richards, R. M.; Engtrakul, C.

    2012-06-29T23:59:59.000Z

    A low-temperature ozone exposure technique was employed for the post-treatment of WO{sub x} nanorod thin films fabricated from hot-wire chemical vapor deposition (HWCVD) and ultrasonic spray deposition (USD) techniques. The resulting films were characterized with x-ray diffraction (XRD), transmission electron microscopy (TEM), Raman spectroscopy, UV-vis-NIR spectroscopy and x-ray photoelectron spectroscopy (XPS). The stoichiometry and surface crystallinity of the WO{sub x} thin films were subsequently modulated upon ozone exposure and thermal annealing without particle growth. The electrochromic performance was studied in a LiClO{sub 4}-propylene carbonate electrolyte, and the results suggest that the low-temperature ozone exposure technique is superior to the traditional high-temperature thermal annealing (employed to more fully oxidize the WO{sub x}). The optical modulation at 670 nm was improved from 35% for the as-deposited film to 57% for the film after ozone exposure at 150 C. The coloration efficiency was improved and the switching speed to the darkened state was significantly accelerated from 18.0 s for the as-deposited film to 11.8 s for the film after the ozone exposure. The process opens an avenue for low-temperature and cost-effective manufacturing of electrochromic films, especially on flexible polymer substrates.

  7. Novel microwave assisted sol–gel synthesis (MW-SGS) and electrochromic performance of petal like h-WO{sub 3} thin films

    SciTech Connect (OSTI)

    Kharade, Rohini R., E-mail: k_rohini@in.com [Materials Research Laboratory, Department of Chemistry, Shivaji University, Kolhapur 416004 (India); Patil, K.R. [Centre for Materials Characterization, National Chemical Laboratory, Pune, MH (India)] [Centre for Materials Characterization, National Chemical Laboratory, Pune, MH (India); Patil, P.S. [Thin Film Laboratory, Department of Physics, Shivaji University, Kolhapur 416004 (India)] [Thin Film Laboratory, Department of Physics, Shivaji University, Kolhapur 416004 (India); Bhosale, P.N., E-mail: p_n_bhosale@rediffmail.com [Materials Research Laboratory, Department of Chemistry, Shivaji University, Kolhapur 416004 (India)

    2012-07-15T23:59:59.000Z

    Graphical abstract: Electrochromic intercalation and deintercalation of Li{sup +} ions and electrons is facilitated by providing hexagonal tunnel, trigonal cavity and square window which allows easy and fast insertion and extraction of ions. Highlights: ? Novel two step MW-SGS is first time employed to prepare WO{sub 3} thin films. ? MW-SGS is simple and cost effective technique for preparation of nanostructures. ? Petal-like hexagonal WO{sub 3} nanodisks were successfully deposited. ? O/W ratio calculated by XPS studies is 2.89. ? Good electrochromic performance suggests practical usability of proposed technique. -- Abstract: Use of domestic microwave oven is first time employed for chemical deposition of nanocrystalline hexagonal WO{sub 3} (h-WO{sub 3}) thin films. Low cost precursors like sodium tungstate, hydrochloric acid, oxalic acid and potassium sulfate signifies cost effectiveness of this thin film fabrication route. Scanning electron microscopy images reveal formation of petal like nanodisks. A number of analytical techniques were used to characterize the WO{sub 3} petal like nanodisks, including X-ray diffraction (XRD), energy dispersive X-ray spectroscopy (EDX), X-ray photoelectron spectroscopy, FT-IR spectroscopy, Raman scattering spectroscopy, UV–visible spectrophotometry and cyclic voltammetry (CV). The X-ray photoelectron spectroscopic studies revealed 2.89 O/W atomic ratio. The electrical transport studies on WO{sub 3} thin films show semiconducting behavior with n-type semiconductivity. The value of determined coloration efficiency is 57.90 cm{sup 2}/C. The mechanism of Li{sup +} intercalation and deinercalation in h-WO{sub 3} matrix is proposed for enhanced electrochromism.

  8. An on sun parametric study of solar hydrogen production using WO{sub 3} photoanodes

    SciTech Connect (OSTI)

    Halford, Christopher K. [UNLV Center for Energy Research, 4505 S. Maryland Parkway, Las Vegas, NV 89154 (United States); Boehm, Robert F. [UNLV Center for Energy Research, 4505 S. Maryland Parkway, UNLV Box 454027, Las Vegas, NV 89154-4027 (United States)

    2011-01-15T23:59:59.000Z

    The solar production of hydrogen using photoactive electrodes is a topic receiving much attention in recent years. The use of thin metal oxide films as photoanodes allows the water splitting reaction to occur at a much lower applied voltage than would be necessary with a straight electrolysis process. The University of Nevada Las Vegas in collaboration with the UK based firm Hydrogen Solar and funded by the United States Department of Energy, has developed a prototype of this type of cell using a WO{sub 3} photoanode. An on-sun test facility has been constructed by the UNLV Center for Energy Research (CER) where a study is being conducted with regard to the effects various design parameters on the rate of hydrogen evolution. Parameters being studied include electrolyte temperature, electrolyte flow rate, electrolyte resistivity, applied voltage, and membrane to electrode spacing. The data collected is used in a parametric study of the cell performance. The results of this study are then used to establish general trends as to the effects of these parameters on the performance of the cells outside of a laboratory environment. (author)

  9. Synthesis and photoluminescence properties of NaLaMgWO{sub 6}:RE{sup 3+} (RE = Eu, Sm, Tb) phosphor for white LED application

    SciTech Connect (OSTI)

    Hou, Jingshan [College of Materials Science and Engineering, Dong Hua University, Shanghai 200051 (China) [College of Materials Science and Engineering, Dong Hua University, Shanghai 200051 (China); CAS Key Laboratory of Materials for Energy Conversion, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050 (China); College of Chemistry and Molecular Engineering, Peking University, Beijing 100871 (China); Yin, Xin [CAS Key Laboratory of Materials for Energy Conversion, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050 (China) [CAS Key Laboratory of Materials for Energy Conversion, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050 (China); College of Chemistry and Molecular Engineering, Peking University, Beijing 100871 (China); Huang, Fuqiang, E-mail: huangfq@mail.sic.ac.cn [CAS Key Laboratory of Materials for Energy Conversion, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050 (China) [CAS Key Laboratory of Materials for Energy Conversion, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050 (China); College of Chemistry and Molecular Engineering, Peking University, Beijing 100871 (China); Jiang, Weizhong, E-mail: jwzh@dhu.edu.cn [College of Materials Science and Engineering, Dong Hua University, Shanghai 200051 (China)] [College of Materials Science and Engineering, Dong Hua University, Shanghai 200051 (China)

    2012-06-15T23:59:59.000Z

    Highlights: ? NaLa{sub 1?x}MgWO{sub 6}:xRE{sup 3+} phosphors were synthesized by solid-state reaction method. ? Compared with Y{sub 2}O{sub 3}:Eu{sup 3+}, NaLaMgWO{sub 6}:Eu{sup 3+} performed better luminescence properties. ? The results demonstrated NaLaMgWO{sub 6} as a suitable host for RE{sup 3+}-doping. -- Abstract: Single phase of NaLa{sub 1?x}MgWO{sub 6}:xRE{sup 3+} (0 < x ?1) (RE = Eu, Sm, Tb) phosphors were prepared by solid-state reaction method. X-ray diffraction, scanning electron microscopy, the morphology energy-dispersive X-ray spectroscopy, UV–vis diffuse reflectance spectra and photoluminescence were used to characterize the samples. Under the light excitation, NaLaMgWO{sub 6}:Eu{sup 3+}, NaLaMgWO{sub 6}:Sm{sup 3+} and NaLaMgWO{sub 6}:Tb{sup 3+}, phosphors showed the characteristic emissions of Eu{sup 3+} ({sup 5}D{sub 0} ? {sup 7}F{sub 4,3,2,1}), Sm{sup 3+} ({sup 4}G{sub 5/2} ? {sup 6}H{sub 5/2,7/2,9/2}), and Tb{sup 3+} ({sup 5}D{sub 4} ? {sup 7}F{sub 6,5,4,3}), respectively. The intensity of the red emission for Na(La{sub 0.6}Eu{sub 0.4})MgWO{sub 6} is 2.5 times higher than that of (Y{sub 0.95}Eu{sub 0.05}){sub 2}O{sub 3} under blue light irradiation. The quantum efficiencies of the entitled phosphors excited under 394 nm and 464 nm are also investigated and compared with commercial phosphors Y{sub 2}O{sub 3}:Eu{sup 3+}, Sr{sub 2}Si{sub 5}N{sub 8}:Eu{sup 2+} and Y{sub 3}A{sub 5}G{sub 12}:Ce{sup 3+}. The results demonstrated NaLaMgWO{sub 6}:RE{sup 3+} phosphors as potential candidates for white light emitting diode pumped by UV or blue chip.

  10. Dynamic Asphaltene-Resin Exchange at the Oil/Water Interface: Time-Dependent W/O Emulsion Stability for Asphaltene/Resin

    E-Print Network [OSTI]

    Kilpatrick, Peter K.

    Dynamic Asphaltene-Resin Exchange at the Oil/Water Interface: Time-Dependent W/O Emulsion Stability for Asphaltene/Resin Model Oils Xiaoli Yang, Vincent J. Verruto, and Peter K. Kilpatrick* Department of Chemical was used to determine the time-dependent stability of water-in- oil emulsions in which asphaltenes

  11. Journal of The Electrochemical Society, 162 (1) H65-H71 (2015) H65 Enhancing Majority Carrier Transport in WO3 Water Oxidation

    E-Print Network [OSTI]

    Osterloh, Frank

    . By balancing electron/hole extraction with photon absorption in an optimized 30 nm WO3 particulate electrode reserved. Manuscript submitted October 9, 2014; revised manuscript received November 18, 2014. Published to chemical fuel by decomposing water into hydrogen and oxygen.1­9 Among inorganic materials that catalyze

  12. An experimental investigation of the urea-water decomposition and selective catalytic reduction (SCR) of nitric oxides with urea using V2O5-WO3-TiO2 catalyst. 

    E-Print Network [OSTI]

    Johar, Jasmeet Singh

    2005-11-01T23:59:59.000Z

    Two flow reactor studies, using an electrically heated laminar flow reactor over Vanadia based (V2O5-WO3/TiO2) honeycomb catalyst, were performed at 1 atm pressure and various temperatures. The experiments were conducted ...

  13. Probing structure-induced optical behavior in a new class of self-activated luminescent 0D/1D CaWO? metal oxide – CdSe nanocrystal composite heterostructures

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Han, Jinkyu; McBean, Coray; Wang, Lei; Hoy, Jessica; Jaye, Cherno; Liu, Haiqing; Li, Zhuo-Qun; Sfeir, Matthew Y.; Fischer, Daniel A.; Taylor, Gordon T.; et al

    2015-02-10T23:59:59.000Z

    In this report, we synthesize and characterize the structural and optical properties of novel heterostructures composed of (i) semiconducting nanocrystalline CdSe quantum dot (QDs) coupled with (ii) both one and zero-dimensional (1D and 0D) motifs of self-activated luminescence CaWO? metal oxides. Specifically, ~4 nm CdSe QDs have been anchored onto (i) high-aspect ratio 1D nanowires, measuring ~230 nm in diameter and ~3 ?m in length, as well as onto (ii) crystalline 0D nanoparticles (possessing an average diameter of ~ 80 nm) of CaWO? through the mediation of 3-mercaptopropionic acid (MPA) as a connecting linker. Composite formation was confirmed by complementarymore »electron microscopy and spectroscopy (i.e. IR and Raman) data. In terms of luminescent properties, our results show that our 1D and 0D heterostructures evince photoluminescence (PL) quenching and shortened PL lifetimes of CaWO? as compared with unbound CaWO?. We propose that a photo-induced electron transfer process occurs from CaWO? to CdSe QDs, a scenario which has been confirmed by NEXAFS measurements and which highlights a decrease in the number of unoccupied orbitals in the conduction bands of CdSe QDs. By contrast, the PL signature and lifetimes of MPA-capped CdSe QDs within these heterostructures do not exhibit noticeable changes as compared with unbound MPA-capped CdSe QDs. The striking difference in optical behavior between CaWO? nanostructures and CdSe QDs within our heterostructures can be correlated with the relative positions of their conduction and valence energy band levels. In addition, the PL quenching behaviors for CaWO? within the heterostructure configuration were examined by systematically varying (i) the quantities and coverage densities of CdSe QDs as well as (ii) the intrinsic morphology (and by extension, the inherent crystallite size) of CaWO? itself.« less

  14. Probing structure-induced optical behavior in a new class of self-activated luminescent 0D/1D CaWO? metal oxide – CdSe nanocrystal composite heterostructures

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Han, Jinkyu [Brookhaven National Lab. (BNL), Upton, NY (United States); McBean, Coray [State Univ. of New York at Stony Brook, Stony Brook, NY (United States); Wang, Lei [State Univ. of New York at Stony Brook, Stony Brook, NY (United States); Hoy, Jessica [State Univ. of New York at Stony Brook, Stony Brook, NY (United States); Jaye, Cherno [National Inst. of Standards and Technology (NIST), Gaithersburg, MD (United States); Liu, Haiqing [State Univ. of New York at Stony Brook, Stony Brook, NY (United States); Li, Zhuo-Qun [State Univ. of New York at Stony Brook, Stony Brook, NY (United States); Sfeir, Matthew Y. [Brookhaven National Lab. (BNL), Upton, NY (United States); Fischer, Daniel A. [National Inst. of Standards and Technology (NIST), Gaithersburg, MD (United States); Taylor, Gordon T. [State Univ. of New York at Stony Brook, Stony Brook, NY (United States); Misewich, James A. [Brookhaven National Lab. (BNL), Upton, NY (United States); Wong, Stanislaus S. [Brookhaven National Lab. (BNL), Upton, NY (United States); State Univ. of New York at Stony Brook, Stony Brook, NY (United States)

    2015-02-10T23:59:59.000Z

    In this report, we synthesize and characterize the structural and optical properties of novel heterostructures composed of (i) semiconducting nanocrystalline CdSe quantum dot (QDs) coupled with (ii) both one and zero-dimensional (1D and 0D) motifs of self-activated luminescence CaWO? metal oxides. Specifically, ~4 nm CdSe QDs have been anchored onto (i) high-aspect ratio 1D nanowires, measuring ~230 nm in diameter and ~3 ?m in length, as well as onto (ii) crystalline 0D nanoparticles (possessing an average diameter of ~ 80 nm) of CaWO? through the mediation of 3-mercaptopropionic acid (MPA) as a connecting linker. Composite formation was confirmed by complementary electron microscopy and spectroscopy (i.e. IR and Raman) data. In terms of luminescent properties, our results show that our 1D and 0D heterostructures evince photoluminescence (PL) quenching and shortened PL lifetimes of CaWO? as compared with unbound CaWO?. We propose that a photo-induced electron transfer process occurs from CaWO? to CdSe QDs, a scenario which has been confirmed by NEXAFS measurements and which highlights a decrease in the number of unoccupied orbitals in the conduction bands of CdSe QDs. By contrast, the PL signature and lifetimes of MPA-capped CdSe QDs within these heterostructures do not exhibit noticeable changes as compared with unbound MPA-capped CdSe QDs. The striking difference in optical behavior between CaWO? nanostructures and CdSe QDs within our heterostructures can be correlated with the relative positions of their conduction and valence energy band levels. In addition, the PL quenching behaviors for CaWO? within the heterostructure configuration were examined by systematically varying (i) the quantities and coverage densities of CdSe QDs as well as (ii) the intrinsic morphology (and by extension, the inherent crystallite size) of CaWO? itself.

  15. Low background detector with enriched 116CdWO4 crystal scintillators to search for double beta decay of 116Cd

    E-Print Network [OSTI]

    Barabash, A S; Bernabei, R; Boiko, R S; Cappella, F; Caracciolo, V; Chernyak, D M; Cerulli, R; Danevich, F A; Di Vacri, M L; Dossovitskiy, A E; Galashov, E N; Incicchitti, A; Kobychev, V V; Konovalov, S I; Kovtun, G P; Kudovbenko, V M; Laubenstein, M; Mikhlin, A L; Nisi, S; Poda, D V; Podviyanuk, R B; Polischuk, O G; Shcherban, A P; Shlegel, V N; Solopikhin, D A; Stenin, Yu G; Tretyak, V I; Umatov, V I; Vasiliev, Ya V; Virich, V D

    2011-01-01T23:59:59.000Z

    A cadmium tungstate crystal boule enriched in $^{116}$Cd to 82% with mass of 1868 g was grown by the low-thermal-gradient Czochralski technique. The isotopic composition of cadmium and the trace contamination of the crystal were estimated by High Resolution Inductively Coupled Plasma Mass-Spectrometry. The crystal scintillators produced from the boule were subjected to characterization that included measurements of transmittance and energy resolution. A low background scintillation detector with two $^{116}$CdWO$_4$ crystal scintillators (586 g and 589 g) was developed. The detector was running over 1727 h deep underground at the Gran Sasso National Laboratories of the INFN (Italy), which allowed to estimate the radioactive contamination of the enriched crystal scintillators. The radiopurity of a third $^{116}$CdWO$_4$ sample (326 g) was tested with the help of ultra-low background high purity germanium $\\gamma$ detector. Monte Carlo simulations of double $\\beta$ processes in $^{116}$Cd were used to estimate ...

  16. First test of a cryogenic scintillation module with a CaWO4 scintillator and a low-temperature photomultiplier down to 6 K

    E-Print Network [OSTI]

    H. Kraus; V. B. Mikhailik

    2010-04-12T23:59:59.000Z

    Future cryogenic experiments searching for rare events require reliable, efficient and robust techniques for the detection of photons at temperatures well below that to which low-temperature photomultipliers (PMT) were characterised. Motivated by this we investigated the feasibility of a low-temperature PMT for the detection of scintillation from crystalline scintillators at T = 6 K. The scintillation module was composed of a CaWO4 scintillator and a low-temperature PMT D745B from ET Enterprises. The PMT responsivity was studied at T=290, 77 and 6 K using gamma-quanta from 241Am (60 keV) and 57Co (122 and 136 keV) sources. We have shown that the low-temperature PMT retains its single photon counting ability even at cryogenic temperatures. At T = 6 K, the response of the PMT decreases to 51 +- 13 % and 27 +- 6 % when assessed in photon counting and pulse height mode, respectively. Due to the light yield increase of the CaWO4 scintillating crystal the overall responsivity of the scintillation modules CaWO4+PMT is 94 +- 15 % (photon counting) and 48 +- 8 % (pulse height) when cooling to T = 6 K. The dark count rate was found to be 20 s-1. The energy resolution of the module remains similar to that measured at room temperature using either detection mode. It is concluded that commercially available low-temperature PMT are well suited for detection of scintillation light at cryogenic temperatures.

  17. Preparation of magnetic Fe{sub 3}O{sub 4}/SiO{sub 2}/Bi{sub 2}WO{sub 6} microspheres and their application in photocatalysis

    SciTech Connect (OSTI)

    Chen, Su-Hua; Yin, Zhen [Key Laboratory of Jiangxi Province for Ecological Diagnosis-Remediation and Pollution Control, Nanchang Hangkong University, Nanchang 330063 (China)] [Key Laboratory of Jiangxi Province for Ecological Diagnosis-Remediation and Pollution Control, Nanchang Hangkong University, Nanchang 330063 (China); Luo, Sheng-Lian, E-mail: sllou@hnu.edu.cn [Key Laboratory of Jiangxi Province for Ecological Diagnosis-Remediation and Pollution Control, Nanchang Hangkong University, Nanchang 330063 (China)] [Key Laboratory of Jiangxi Province for Ecological Diagnosis-Remediation and Pollution Control, Nanchang Hangkong University, Nanchang 330063 (China); Au, Chak-Tong [Key Laboratory of Jiangxi Province for Ecological Diagnosis-Remediation and Pollution Control, Nanchang Hangkong University, Nanchang 330063 (China) [Key Laboratory of Jiangxi Province for Ecological Diagnosis-Remediation and Pollution Control, Nanchang Hangkong University, Nanchang 330063 (China); Department of Chemistry, Hong Kong Baptist University, Kowloon Tong, Hong Kong (China); Li, Xue-Jun [Key Laboratory of Jiangxi Province for Ecological Diagnosis-Remediation and Pollution Control, Nanchang Hangkong University, Nanchang 330063 (China)] [Key Laboratory of Jiangxi Province for Ecological Diagnosis-Remediation and Pollution Control, Nanchang Hangkong University, Nanchang 330063 (China)

    2013-02-15T23:59:59.000Z

    Graphical abstract: Display Omitted Highlights: ? We described the preparation and characterization of the Fe{sub 3}O{sub 4}/SiO{sub 2}/Bi{sub 2}WO{sub 6} magnetic microspheres composites. ? The photocatalytic activities of the composites were also investigated. ? With the combination of photocatalysts and Fe{sub 3}O{sub 4}/SiO{sub 2}, good stability and magnetic separability can be achieved. ? And to the best of our knowledge, this is the first report concerning Bi{sub 2}WO{sub 6} nanoparticles loaded on Fe{sub 3}O{sub 4}/SiO{sub 2} particles. -- Abstract: Magnetic Fe{sub 3}O{sub 4}/SiO{sub 2}/Bi{sub 2}WO{sub 6} microspheres with photocatalytic properties have been synthesized using a silica layer for “bonding” (adhering Bi{sub 2}WO{sub 6} to Fe{sub 3}O{sub 4}). The morphology, composition and magnetic properties of the Fe{sub 3}O{sub 4}/SiO{sub 2}/Bi{sub 2}WO{sub 6} composites were characterized by X-ray diffraction, transmission electron microscopy, Fourier transform infrared spectroscopy, vibrating sample magnetometry, and BET surface area analysis. The activity of the material in photocatalytic decoloration of aqueous rhodamine B (RhB) solution under visible light was evaluated. The results showed that Bi{sub 2}WO{sub 6} combined well with the magnetic Fe{sub 3}O{sub 4}/SiO{sub 2} nanoparticles. The Fe{sub 3}O{sub 4}/SiO{sub 2}/Bi{sub 2}WO{sub 6} composites were spherical in shape, having a mean size of 2 ?m. The spent catalyst could be recycled with only slight decline in catalytic activity. It is envisaged that the stability, reusability, and magnetic nature of the Fe{sub 3}O{sub 4}/SiO{sub 2}/Bi{sub 2}WO{sub 6} catalyst warrants its application in photocatalysis.

  18. Low background detector with enriched 116CdWO4 crystal scintillators to search for double beta decay of 116Cd

    E-Print Network [OSTI]

    A. S. Barabash; P. Belli; R. Bernabei; R. S. Boiko; F. Cappella; V. Caracciolo; D. M. Chernyak; R. Cerulli; F. A. Danevich; M. L. Di Vacri; A. E. Dossovitskiy; E. N. Galashov; A. Incicchitti; V. V. Kobychev; S. I. Konovalov; G. P. Kovtun; V. M. Kudovbenko; M. Laubenstein; A. L. Mikhlin; S. Nisi; D. V. Poda; R. B. Podviyanuk; O. G. Polischuk; A. P. Shcherban; V. N. Shlegel; D. A. Solopikhin; Yu. G. Stenin; V. I. Tretyak; V. I. Umatov; Ya. V. Vasiliev; V. D. Virich

    2011-08-13T23:59:59.000Z

    A cadmium tungstate crystal boule enriched in $^{116}$Cd to 82% with mass of 1868 g was grown by the low-thermal-gradient Czochralski technique. The isotopic composition of cadmium and the trace contamination of the crystal were estimated by High Resolution Inductively Coupled Plasma Mass-Spectrometry. The crystal scintillators produced from the boule were subjected to characterization that included measurements of transmittance and energy resolution. A low background scintillation detector with two $^{116}$CdWO$_4$ crystal scintillators (586 g and 589 g) was developed. The detector was running over 1727 h deep underground at the Gran Sasso National Laboratories of the INFN (Italy), which allowed to estimate the radioactive contamination of the enriched crystal scintillators. The radiopurity of a third $^{116}$CdWO$_4$ sample (326 g) was tested with the help of ultra-low background high purity germanium $\\gamma$ detector. Monte Carlo simulations of double $\\beta$ processes in $^{116}$Cd were used to estimate the sensitivity of an experiment to search for double $\\beta$ decay of $^{116}$Cd.

  19. 2/1/2014 Kleiner als ein Floh: Forscher bauen Mini-Windrad -WiWo Green http://green.wiwo.de/kleiner-als-ein-floh-us-forscher-bauen-mini-windrad/ 1/4

    E-Print Network [OSTI]

    Chiao, Jung-Chih

    2/1/2014 Kleiner als ein Floh: Forscher bauen Mini-Windrad - WiWo Green http://green.wiwo.de/kleiner-als-ein-floh-us-forscher-bauen-mini-windrad- Windrad Copyright: UT Arlington Windräder sind ein wichtiger Baustein in der von der Bundesregierung haben jetzt ein Windrad hergestellt, das aufgrund seiner Größe alle diese Sorgen beseitigen könnte. Denn

  20. File:05-FD-b - DrillingApplicationProcess.pdf | 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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealandORCEncroachment.pdf Jump to:-FD-a - DrillingPreApplicationProcess.pdf Jump to: navigation, search

  1. File:09-FD-b - EAProcess.pdf | 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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are8COaBulkTransmissionSitingProcess.pdf Jump to: navigation, search FileNEPAProcess.pdf Jump to: navigation,

  2. RAPID/Roadmap/3-FD-b (1) | 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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:Ezfeedflag JumpID-f < RAPID‎ | Roadmap Jump to: navigation, searche < (1)NV-a3e <1)

  3. RAPID/Roadmap/3-FD-b (2) | 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 onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere I GeothermalPotentialBiopowerSolidGenerationMethodInformatione < RAPID‎ |gWA-e <20b <e2) <

  4. Final results of an experiment to search for 2beta processes in zinc and tungsten with the help of radiopure ZnWO4 crystal scintillators

    E-Print Network [OSTI]

    P. Belli; R. Bernabei; F. Cappella; R. Cerulli; F. A. Danevich; S. d'Angelo; A. Incicchitti; V. V. Kobychev; D. V. Poda; V. I. Tretyak

    2011-10-18T23:59:59.000Z

    A search for the double beta decay of zinc and tungsten isotopes has been performed with the help of radiopure ZnWO4 crystal scintillators (0.1-0.7 kg) at the Gran Sasso National Laboratories of the INFN. The total exposure of the low background measurements is 0.529 kg yr. New improved half-life limits on the double beta decay modes of 64Zn, 70Zn, 180W, and 186W have been established at the level of 10^{18}-10^{21} yr. In particular, limits on double electron capture and electron capture with positron emission in 64Zn have been set: T_{1/2}(2\

  5. Search for double beta decay of Zinc and Tungsten with the help of low-background ZnWO4 crystal scintillators

    E-Print Network [OSTI]

    P. Belli; R. Bernabei; F. Cappella; R. Cerulli; F. A. Danevich; B. V. Grinyov; A. Incicchitti; V. V. Kobychev; V. M. Mokina; S. S. Nagorny; L. L. Nagornaya; S. Nisi; F. Nozzoli; D. V. Poda; D. Prosperi; V. I. Tretyak; S. S. Yurchenko

    2008-11-14T23:59:59.000Z

    Double beta processes in 64-Zn, 70-Zn, 180-W, and 186-W have been searched for with the help of large volume (0.1-0.7 kg) low background ZnWO4 crystal scintillators at the Gran Sasso National Laboratories of the INFN. Total time of measurements exceeds 10 thousands hours. New improved half-life limits on double electron capture and electron capture with positron emission in 64-Zn have been set, in particular (all the limits are at 90% C.L.): T1/2(0nu2EC)> 1.1e20 yr, T1/2(2nuECbeta+)>7.0e20 yr, and T1/2(0nuECbeta+)>4.3e20 yr. The different modes of double beta processes in 70-Zn, 180-W, and 186-W have been restricted at the level of 1e17-1e20 yr.

  6. Strain-induced orbital polarization and multiple phase transitions in Ba{sub 2}MnWO{sub 6} from first principles

    SciTech Connect (OSTI)

    Ju, Weiwei; Zhao, Bao; Yang, Zhongqin, E-mail: zyang@fudan.edu.cn [State Key Laboratory of Surface Physics and Key Laboratory for Computational Physical Sciences (MOE) and Department of Physics, Fudan University, Shanghai 200433 (China)] [State Key Laboratory of Surface Physics and Key Laboratory for Computational Physical Sciences (MOE) and Department of Physics, Fudan University, Shanghai 200433 (China)

    2013-11-28T23:59:59.000Z

    Electronic structures of double perovskite Ba{sub 2}MnWO{sub 6} with epitaxial strain are explored by using methods based on density functional theory. An in-plane compressive strain is found not only resulting in a semiconductor-metal transition (SMT), but also altering the magnetic structures, from different kinds of antiferromagnetic to ferromagnetic orders. Orbital polarization and different orbital occupancies of Mn d{sub z{sup 2}} and d{sub x{sup 2}?y{sup 2}} states, induced by the epitaxial strain, are employed to understand the SMT. The rich magnetic phase transitions are rationalized by a magnetic stabilization mechanism. Our results show that many technological applications may be carried out in the material with the control of epitaxial strain.

  7. First results of the experiment to search for double beta decay of 106Cd with 106CdWO4 crystal scintillator in coincidence with four crystals HPGe detector

    E-Print Network [OSTI]

    Tretyak, V I; Bernabei, R; Brudanin, V B; Cappella, F; Caracciolo, V; Cerulli, R; Chernyak, D M; Danevich, F A; d'Angelo, S; Incicchitti, A; Laubenstein, M; Mokina, V M; Poda, D V; Polischuk, O G; Podviyanuk, R B; Tupitsyna, I A

    2013-01-01T23:59:59.000Z

    An experiment to search for double beta processes in 106Cd by using cadmium tungstate crystal scintillator enriched in 106Cd (106CdWO4) in coincidence with the four crystals HPGe detector GeMulti is in progress at the STELLA facility of the Gran Sasso underground laboratory of INFN (Italy). The 106CdWO4 scintillator is viewed by a low-background photomultiplier tube through a lead tungstate crystal light-guide produced from deeply purified archaeological lead to suppress gamma quanta from the photomultiplier tube. Here we report the first results of the experiment after 3233 hours of the data taking. A few new improved limits on double beta processes in 106Cd are obtained, in particular T1/2(2nuECb+) > 8.4e20 yr at 90% C.L.

  8. An electrochromic window based on Li sub x WO sub 3 /(PEO) sub 8 LiCIO sub 4 /NiO

    SciTech Connect (OSTI)

    Passerini, S.; Scosati, B. (Dipartimento di Chimica, Universita' di Roma La Sapienza, (IT)); Gorenstein, A. (DFA/IFWG, UNICAMP, CP 6165, Campinas, SP (BR)); Anderson, A.M; Granqvist, C.G. (Dept. of Physics, Chalmers Univ. of Technology, Gothenburg (SW))

    1989-11-01T23:59:59.000Z

    Electrochromic materials are characterized by reversible but persistent changes of the optical properties when subjected to suitable electrochemical reactions. Electrochromism can be utilized in windows, most conveniently by exploiting all-solid-state multilayer coating backed by glass. The multilayer coating should comprise the following sequence of layers: a transparent and electrically conducting base layer, an electrochromic layer, and electrolyte, a conterelectrode, and a transparent conducting top layer. For window applications, the electrolyte should be transparent, and the conterelectrode must be either optically passive (colorless irrespective of its ionic content) or electrochromic in a sense that is complementary to the electrochromism of the electrochromic layer. The latter condition implies that if the electrochromic layer is cathodic (anodic), the counterelectrode must be anodic (cathodic). This paper reports preliminary data taken on samples with electrochromic layers based on tungsten oxide, WO{sub 3}, and nickel oxide, NiO, and an intermediate solid electrolyte of poly(ethylene oxide) doped with lithium perchlorate, (PEO){sub 8}LiClO{sub 4}, where 8 signifies the number of oxygen heteroatoms per lithium ion.

  9. Data:38ec5fdb-d150-4a75-bcba-6597e323101c | Open Energy Information

    Open Energy Info (EERE)

    consumers for all uses in the home, the capacity of any individual single phase motor served under this schedule is limited to 10 HP. Source or reference: ISU Documentation...

  10. Data:7d725892-041e-4625-b90b-8fdb94869df6 | Open Energy Information

    Open Energy Info (EERE)

    motors served under this schedule shall not exceed 10 horsepower. 3. Subject to power cost adjustment, tax adjustment and rate revision. 4. Usage by the Load control...

  11. Data:1946731f-1fdb-417f-83c5-d699e95c6364 | Open Energy Information

    Open Energy Info (EERE)

    Lighting Description: This rate will be applied to athletic field lighting only. Power Cost Adjustment Clause: Charge per all kWh varies monthly. Commitment to Community Program...

  12. Data:0864c109-7047-4687-86fd-b7532913e0eb | Open Energy Information

    Open Energy Info (EERE)

    subject matter experts. Jump to: navigation, search Loading... 1. Basic Information 2. Demand 3. Energy << Previous 1 2 3 Next >> Basic Information Utility name: City of...

  13. Data:7d60fdb0-b014-4889-8061-e473d0810742 | 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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualProperty EditCalifornia:PowerCER.pngRoofse-9a8a-5b28746dce7a No revision has

  14. inside shuttle sign wo date

    Office of Environmental Management (EM)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33Frequently20,000 Russian Nuclearand Characterization of aShiprock)ReportR1 Indianapolis,

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    Energy Savers [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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual Siteof Energy 2, 2015Visiting8.pdfand Characterization of aHome * Briefing3 AUDIT

  16. 25%Eu : KGd(WO{sub 4}){sub 2} laser crystal: spectroscopy and lasing on the {sup 5}D{sub 0}{yields}{sup 7}F{sub 4} transition

    SciTech Connect (OSTI)

    Bagaev, Sergei N; Dashkevich, V I; Orlovich, Valentin A; Vatnik, S M; Pavlyuk, A A; Yurkin, A M

    2011-03-31T23:59:59.000Z

    25%Eu : KGd(WO{sub 4}){sub 2} crystal is grown by a modified Czochralski method and its spectral and lasing properties are studied. Generation of stimulated emission in this crystal on the {sup 5}D{sub 0}{yields}{sup 7}F{sub 4} transition of the Eu{sup 3+} ion is obtained, as far as we know, for the first time. The laser operates at room temperature at a wavelength of {approx}703 nm under pumping into the {sup 7}F{sub 0}{yields}{sup 5}D{sub 1} absorption band of the europium ion by the second harmonic of a Q-switched Nd : KGW laser ({lambda}{sub pump}= 533.6 nm). With a 9.4-mm-long active element, the output energy in the free-running regime reached 244 {mu}J, while the optical efficiency was 1.5%. (lasers and active media)

  17. Data:283c6b29-20c3-4fdb-a853-231d46865a1d | Open Energy Information

    Open Energy Info (EERE)

    Information 2. Demand 3. Energy << Previous 1 2 3 Next >> Basic Information Utility name: K C Electric Association Effective date: 20140101 End date if known: Rate name: Oil Well...

  18. Data:Ea23816f-e2c6-4155-9eba-fdb5244fbf51 | Open Energy Information

    Open Energy Info (EERE)

    2002 North American Industry Classification System (NAICS) code 5181, or 2007 NAICS codes 5182, 522320, and 541214 Source or reference: http:www.jwemc.orgrateforms.aspx...

  19. Data:Fdb25b5a-4d4c-4cdd-b504-6226d98e734b | Open Energy Information

    Open Energy Info (EERE)

    by the City of Austin. Street Lighting unit burning time is limited to dusk to daylight (approximately 4,400 hrs. per year). CHARACTER OF SERVICE: 120240 Volts, AC, as...

  20. Data:3fdb68c2-4238-40c6-9138-dc4c86f670a5 | Open Energy Information

    Open Energy Info (EERE)

    Available to any customer on a first-come, first-served basis with on-site distributed generation capacity of 15 kW or less that is powered by renewable resources (e.g....

  1. Data:3478f2e3-fdb4-4e33-928e-ae982bc6b906 | Open Energy Information

    Open Energy Info (EERE)

    metered services and Part B-23 is primary metered customers who own their own transformers and distribution service facilities and have a peak demand less than 800 KW. Part...

  2. Data:982fa5fd-b44a-4196-8c97-39a136f8ea38 | Open Energy Information

    Open Energy Info (EERE)

    150W HPS - Expressway ) Sector: Lighting Description: Additional fees for poles and transformers may apply Source or reference: ISU Documentation Source Parent: Comments Applicable...

  3. Data:65a7c0c2-a202-4453-a22e-ca1fdb08a358 | Open Energy Information

    Open Energy Info (EERE)

    2. Demand 3. Energy << Previous 1 2 3 Next >> Basic Information Utility name: Consumers Energy Co Effective date: 20120608 End date if known: Rate name: GP-Dynamic Pricing...

  4. Data:0f468f93-07aa-4fdb-8b0b-b90559f5cad4 | Open Energy Information

    Open Energy Info (EERE)

    date: 20110315 End date if known: Rate name: MU-1 - a1b - 100 watt HPS Sector: Lighting Description: Lamps in enclosed fixtures, mounted on metal or fiberglass columns and...

  5. Data:61fdb651-9a0d-4449-901a-362cfa2cf1ab | Open Energy Information

    Open Energy Info (EERE)

    arm, street light type luminaire with lamp. Maintenance of the complete assembly and the cost of its electrical operation are included in this service. Any additional investment...

  6. Data:5914a046-c43f-4ff5-b2f6-e77edc25fdb2 | Open Energy Information

    Open Energy Info (EERE)

    the first 30 kwh or fraction thereof of consumption Source or reference: http:www.pepco.comresdocumentsDCRatesR.pdf Source Parent: Comments Applicability Demand (kW)...

  7. Data:7e173d10-c429-45fd-b46c-2ea652fe29af | 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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualProperty EditCalifornia:PowerCER.pngRoofse-9a8a-5b28746dce7a No revision

  8. Wo?ch nan sole?y

    E-Print Network [OSTI]

    Paultre, Carrie?; Ross, Jim D.; Freeman, Bryant C.

    2000-01-01T23:59:59.000Z

    yo ap pichkannen 1 pou 1 rakonte yo yon lot ti istwa. Jodi a, li resi ap fe yo kontan. Se sa k fe n ap mande tout moun pou yo rete tou dousman, san pale pou yo sa koute: W O C H N A N S O L E Y Chapit 1 Siklon David te fek ap mache sou kat (4...) mwa depi 1 te fin krabinen tout bagay net andeyo a. Se vre, moun gouvenman yo te fe sa yo te kapab pou manye soulaje mize pep la. Men, se pa tout moun ki te rive jwenn yon lasistans. Se konsa Melani pa t jwenn pesonn moun pou lonje men ba li. Se...

  9. NaWoTec | 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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual SiteofEvaluatingGroup |JilinLu anMicrogreenMoonNASA/AmesNS Solar05 JumpNYSEG Solutions

  10. Nations of Retailers: The Comparative Political Economy of Retail Trade

    E-Print Network [OSTI]

    Watson, Bartholomew Clark

    2011-01-01T23:59:59.000Z

    to worker ratio than Coop Danmark, which operates more smallcompetition is from Coop Danmark. The Danish Co-operativeFDB (Fællesforeningen for Danmarks Brugsforeninger or Danish

  11. ENHANCING THE COMPETENCY OF THE CORRECTIONAL NURSING WORKFORCE

    E-Print Network [OSTI]

    Oliver, Douglas L.

    School of Nursing Deborah Shelton, PhD, RN, NE-BC, CCHP, FAAN E. Jane Martin Professor Associate Dean Butler, MA University of Connecticut School of Nursing: Denise Panosky, DNP, RN, CNE, CCHP, FCNS Funded

  12. Wo finde ich Hilfe? Hilfetelefon Gewalt gegen Frauen.

    E-Print Network [OSTI]

    Manstein, Dietmar J.

    counsellors (exclusively women) can provide advice on all forms of violence against women. In doing so

  13. Real-WoRld Technology TesTs

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

    Electric submersible pumps (ESPs) are a versatile means of artificial lift used in oil and water wells. A drawback to an ESP installation is that it is a complex operation with...

  14. SNL Memohead (black tbird w/o macro)

    Office of Environmental Management (EM)

    New Mexico 87185-0836 date: : November 25, 2014 to: Distribution from: Jeffrey A. Smith, 1555 subject: Mechanical Modeling of a WIPP Drum Under Pressure. Executive Summary...

  15. Electrochromic Poly(DNTD)/WO3 Nanocomposite Films via Electorpolymerization

    E-Print Network [OSTI]

    Guo, John Zhanhu

    Laboratory (ICL), Dan F. Smith Department of Chemical Engineering, Lamar University, Beaumont, Texas 77710, United States Department of Chemistry and Biochemistry, Lamar University, Beaumont, Texas 77710, United

  16. Studieren, wo es am schnsten ist Herausgeber: Der Rektor

    E-Print Network [OSTI]

    Güting, Ralf Hartmut

    studieren Wir versorgen Sie in aller Welt mit Studienmaterial. Und in Österreich, der Schweiz und Ungarn

  17. SNL Memohead (black tbird w/o macro)

    Office of Environmental Management (EM)

    the question of "heavier-than-air" gases, an estimate of the composition of the off-gas products of the chemical reactions within drum 68660 were computed by Hobbs 13 based on...

  18. SNL Memohead (black tbird w/o macro)

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

    in transmission. Because high-concentration PV (HCPV) usually are mounted on a 2-axis solar tracker, for predictive modeling we assume that AOI is approximately 0, i.e., we...

  19. Characterization of Nanoporous WO3 Films Grown via Ballistic...

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

    on the preparation and characterization of high surface area, supported nanoporous tungsten oxide films prepared under different conditions on polished polycrystalline Ta and...

  20. Real-WoRld Technology TesTs

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

    is collected, then returned to the weir tank or disposed of. During the test process, hydraulic backwash of the filter cartridges occurred about every two minutes using 5% of...

  1. Pd/Ni-WO3 anodic double layer gasochromic device

    DOE Patents [OSTI]

    Lee, Se-Hee; Tracy, C. Edwin; Pitts, J. Roland; Liu, Ping

    2004-04-20T23:59:59.000Z

    An anodic double layer gasochromic sensor structure for optical detection of hydrogen in improved response time and with improved optical absorption real time constants, comprising: a glass substrate; a tungsten-doped nickel oxide layer coated on the glass substrate; and a palladium layer coated on the tungsten-doped nickel oxide layer.

  2. SNL Memohead (blue tbird w/o macro)

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Operated for the U.S. Department of Energy by Sandia Corporation Albuquerque, New Mexico 87185-1454 date: January 30, 2015 to: Distribution from: Michael Kaneshige (2554), MS-1454...

  3. Bureau of Land Management - WO-210 - Contact Information | Open Energy

    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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:EzfeedflagBiomassSustainable andBucoda, Washington:Information ResourceInformation

  4. SNL Memohead (blue tbird w/o macro)

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    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 DataDepartment of Energy Your Density Isn'tOrigin ofEnergy atLLC - FE DKT. 10-160-LNG - ORDER 2913| DepartmentSLIDESHOW:DesignSNL Begins

  5. SNL Memohead (black tbird w/o macro)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's PossibleRadiation Protection245C Unlimited ReleaseWelcome to theAbsorptionFinalSNAP:SN

  6. MESSAGE: WIA W/O CLOSING REF CLOSING REF

    Office of Legacy Management (LM)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilA groupTuba City, Arizona, DisposalFourthNrr-osams ADMIN551 - g 7635U:MESSAGE: WIA

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    Office of Environmental Management (EM)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33Frequently AskedEnergy SmallImplementing J-F-1 SECTION Jthe WindSolar Industry

  8. SNL Memohead (black tbird w/o macro)

    Office of Environmental Management (EM)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33Frequently AskedEnergy SmallImplementing J-F-1 SECTION Jthe WindSolar IndustryExceptional

  9. Styron 663 W/O Additives DatapointLabs Report # 7903: Styron 663 W/O Additives PAGE 1 OF 17

    E-Print Network [OSTI]

    Kostic, Milivoje M.

    application, not A6 1.230E-07 Tb good for this wide of a range Viscosity vs Shear Rate F nw tauw d1w d2w a1w a

  10. Optical properties of nanocrystalline WO{sub 3} and WO{sub 3-x} thin films prepared by DC magnetron sputtering

    SciTech Connect (OSTI)

    Johansson, Malin B., E-mail: majo4400@gmail.com; Niklasson, Gunnar A.; Österlund, Lars, E-mail: lars.osterlund@angstrom.uu.se [Division of Solid State Physics, Department of Engineering Sciences, The Ångström Laboratory, Uppsala University, P.O. Box 534, SE-75121 Uppsala (Sweden); Zietz, Burkhard [Division of Physical Chemistry, Department of Chemistry, The Ångström Laboratory, Uppsala University, P.O. Box 523, SE-75120 Uppsala (Sweden)

    2014-06-07T23:59:59.000Z

    The optical properties of tungsten trioxide thin films prepared by DC magnetron sputtering, with different oxygen vacancy (V{sub o}) concentration, have been studied by spectrophotometry and photoluminescence (PL) emission spectroscopy. Absorption and PL spectra show that the films exhibit similar band gap energies, E{sub g} ? 2.9?eV. The absorption spectra of the films show two pronounced absorption bands in the near-infrared region. One peak (P1) is located at approximately 0.7?eV, independent of V{sub o} concentration. A second peak (P2) shifts from 0.96?eV to 1.16?eV with decreasing V{sub o} concentration. Peak P1 is assigned to polaron absorption due to transitions between tungsten sites (W{sup 5+}???W{sup 6+}), or an optical transition from a neutral vacancy state to the conduction band, V{sub o}{sup 0}???W{sup 6+}. The origin of peak P2 is more uncertain but may involve +1 and +2 charged vacancy sites. The PL spectra show several emission bands in the range 2.07 to 3.10?eV in the more sub-stoichiometric and 2.40 to 3.02?eV in the less sub-stoichiometric films. The low energy emission bands agree well with calculated optical transition energies of oxygen vacancy sites, with dominant contribution from neutral and singly charged vacancies in the less sub-stoichiometric films, and additional contributions from doubly charged vacancy sites in the more sub-stoichiometric films.

  11. Journal Citation Reports JCRSCISSCIIF 15% Web of ScienceWoS

    E-Print Network [OSTI]

    Wu, Yih-Min

    . Browne / Peter D. Burbelo / Ploenchan Chetchotisakd / Yupin Suputtamongkol / Sasisopin Kiertiburanakul Campbell / Denise Hyde / Andres Brainsky / Dickens Theodore / the ELEVATE Study Group IF10 NEW ENGLAND Angkasekwinai / Boonmee Sathapatayavongs / Po-Ren Hsueh / Chi-Chang Shieh / Margaret R. Brown / Wanna

  12. CdWO4 crystal scintillators from enriched isotopes for double beta decay experiments

    E-Print Network [OSTI]

    D. V. Poda; A. S. Barabash; P. Belli; R. Bernabei; R. S. Boiko; V. B. Brudanin; F. Cappella; V. Caracciolo; S. Castellano; R. Cerulli; D. M. Chernyak; F. A. Danevich; S. d'Angelo; V. Ya. Degoda; M. L. Di Vacri; A. E. Dossovitskiy; E. N. Galashov; A. Incicchitti; V. V. Kobychev; S. I. Konovalov; G. P. Kovtun; M. Laubenstein; A. L. Mikhlin; V. M. Mokina; A. S. Nikolaiko; S. Nisi; R. B. Podviyanuk; O. G. Polischuk; A. P. Shcherban; V. N. Shlegel; D. A. Solopikhin; V. I. Tretyak; V. I. Umatov; Ya. V. Vasiliev; V. D. Virich

    2013-02-20T23:59:59.000Z

    Cadmium tungstate crystal scintillators enriched in 106Cd and 116Cd were developed. The produced scintillators exhibit good optical and scintillation properties, and a low level of radioactive contamination. Experiments to search for double beta decay of 106Cd and 116Cd are in progress at the Gran Sasso National Laboratories of the INFN (Italy). Prospects to further improve the radiopurity of the detectors by recrystallization are discussed.

  13. CdWO4 crystal scintillators from enriched isotopes for double beta decay experiments

    E-Print Network [OSTI]

    Poda, D V; Belli, P; Bernabei, R; Boiko, R S; Brudanin, V B; Cappella, F; Caracciolo, V; Castellano, S; Cerulli, R; Chernyak, D M; Danevich, F A; d'Angelo, S; Degoda, V Ya; Di Vacri, M L; Dossovitskiy, A E; Galashov, E N; Incicchitti, A; Kobychev, V V; Konovalov, S I; Kovtun, G P; Laubenstein, M; Mikhlin, A L; Mokina, V M; Nikolaiko, A S; Nisi, S; Podviyanuk, R B; Polischuk, O G; Shcherban, A P; Shlegel, V N; Solopikhin, D A; Tretyak, V I; Umatov, V I; Vasiliev, Ya V; Virich, V D

    2013-01-01T23:59:59.000Z

    Cadmium tungstate crystal scintillators enriched in 106Cd and 116Cd were developed. The produced scintillators exhibit good optical and scintillation properties, and a low level of radioactive contamination. Experiments to search for double beta decay of 106Cd and 116Cd are in progress at the Gran Sasso National Laboratories of the INFN (Italy). Prospects to further improve the radiopurity of the detectors by recrystallization are discussed.

  14. Journal Citation Reports JCRSCISSCIIF 15% Web of ScienceWoS

    E-Print Network [OSTI]

    Wu, Yih-Min

    Oncology Summit 2013 Department of Internal Medicine, NTU College of Medicine Hepatitis Research Center%IFIF 201421 2 #12;IF IF IF10 BMJ-BRITISH MEDICAL JOURNAL Volume: 347 Article Number: f6008 Amplification of HOXD-Harboring Chromosome Region Is Implicated in Mulitiple- Walled Carbon Nanotubes

  15. Journal Citation Reports JCRSCISSCIIF 15% Web of ScienceWoS

    E-Print Network [OSTI]

    Wu, Yih-Min

    'Byrne, Vera Hirsh, Tony Mok, Sarayut Lucien Geater, Sergey Orlov, Chun-Ming Tsai, Michael Boyer, Wu-Chou Su

  16. Informatica Propedeuse Voorjaar 2013-2014 week Datum Ma Di Wo Do Vr

    E-Print Network [OSTI]

    Emmerich, Michael

    /304,306/308 Bjr2 = bijeenkomst over jaar 2, aanvang 10.30 u. (B02) Db Databases Dr. M. Emmerich B02 Studsem (2e jr): 1e jrs zijn welkom wDb Werkgr. Databases Dr. M. Emmerich 302/304,306/308 Pointer workshop Leidsche Dr. M.M. Bonsangue B02, B02/B03 Studsem Studentenseminarium Dr. M. Emmerich/Dr. T. Stefanov 174 w

  17. Informatica en Wiskunde, Propedeuse, Voorjaar 2013-2014 week Datum Ma Di Wo Do Vr

    E-Print Network [OSTI]

    Emmerich, Michael

    .30 u. Db/wDb Databases Dr. M. Emmerich B02 Pointer workshop, Leidsche Flesch wDb Werkgroep Databases Dr. M. Emmerich 302/304,306/308 IKR Inleiding Kansrekening Dr. M.O. Heydenreich Studsem (2e jr): 1e jrs zijn welkom Lo/wLo Logica Dr. M.M. Bonsangue B02, B02/B03 Studsem Studentenseminarium Dr. M. Emmerich

  18. Journal Citation Reports JCRSCISSCIIF5%Web of ScienceWoS

    E-Print Network [OSTI]

    Wu, Yih-Min

    -Ching Yen, Yun National Taiwan University Hospital Canonical Nuclear Factor kappa B Pathway Links Carbamazepine- Induced Toxic Effects and HLA-B*1502 Screening in Taiwan NEW ENGLAND JOURNAL OF MEDICINE Volume;ENGINEERING, BIOMEDICAL259 MATERIALS SCIENCE, BIOMATERIALS1 25 Li-Ying Chien Jong-Kai Hsiao Szu-Chun Hsu Ming

  19. Schedule of mastercourses Computer Science, Spring 2013-2014 Di Wo Do Vr

    E-Print Network [OSTI]

    Emmerich, Michael

    . Arbab 405 AiDM Advances in Data Mining Dr. W.J. Kowalczyk 405 ESS Embedded Systems and Software Dr.Ir. T BMPN BMPN BMPN BMPN BMPN CMB CMB BMPN DiesvieringCCC ESS ESS CCC CCC ESS ESS ESS ESS ESS ESS ESS ESS CCC CCC CCC CCC CCC CCC CCC CCC CCC CCC Good Friday ESS ESS University ClosedAscension Day el cid week

  20. Journal Citation Reports JCRSCISSCIIF 15% Web of ScienceWoS

    E-Print Network [OSTI]

    Wu, Yih-Min

    Thrombosuction and Tirofiban Infusion (ITTI) trial Department of Internal Medicine, NTU Hospital Department

  1. RadioWoRld | radioworld.com Vol. 35, No. 8 March 23, 2011

    E-Print Network [OSTI]

    ItoR IN ChIEF t. Carter Ross latIN aMERICa EdItoR IN ChIEF Rogelio ocampo latIN aMERICa EdItoR Karina gerardiENt / SalES dIRECtoR Eric trabb ADVERTISING SALES REPRESENTATIVES US EaSt & latIN aMERICa: John Casey and subscription renewal, please visit radioworld.com and click on the "Subscription" button. to submit letters

  2. Journal Citation Reports JCRSCISSCIIF5%Web of ScienceWoS

    E-Print Network [OSTI]

    Wu, Yih-Min

    / Henriette Kirchner / Paul T. Pfluger / Vincent Bernard / Yu-yi Lin / Erin M. Bowers / Chandrani MukherjeeIF 5% IF #12;HEMATOLOGY261Wen-Chien Chou / Huai-Hsuan Huang / Hsin-An Hou / Chien- Yuan Chen / Jih

  3. ITO/PEDOT/acrylic at 100 C 3 /, w/o PEDOT: high /

    E-Print Network [OSTI]

    Fair, Richard

    ~ 10 hr 2 · hands-on: 3 hr 3 · manual sample transfer between instruments time wasted step hr mix, primers/probe 2 60 95 DM electrodes heater wash buffer 2 wash buffer 3 SecureSeal gasket Parylene

  4. Microsoft Word - EP-WCRR-WO-DOP-0233 Revision 35 Final 6-27-2012.doc

    Office of Environmental Management (EM)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33Frequently Asked Questions forCheneyNovember S. DEPARTMENTtheStatus of the Mixed2505 WCRRF Waste

  5. Microsoft Word - EP-WCRR-WO-DOP-0233 Final 7-26-2012.doc

    Office of Environmental Management (EM)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33Frequently Asked Questions forCheneyNovember S. DEPARTMENTtheStatus of the Mixed2505 WCRRF

  6. Microsoft Word - EP-WCRR-WO-DOP-0233 R28 final.doc

    Office of Environmental Management (EM)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33Frequently Asked Questions forCheneyNovember S. DEPARTMENTtheStatus of the Mixed2505 WCRRFSection

  7. Microsoft Word - EP-WCRR-WO-DOP-0233 R37 final.doc

    Office of Environmental Management (EM)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33Frequently Asked Questions forCheneyNovember S. DEPARTMENTtheStatus of the Mixed2505 WCRRFSection7

  8. Microsoft Word - EP-WCRR-WO-DOP-0233 R38 final.doc

    Office of Environmental Management (EM)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33Frequently Asked Questions forCheneyNovember S. DEPARTMENTtheStatus of the Mixed2505

  9. WO3 and HPA based system for ultra high stability Innovation for Our Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    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 DataDepartment of Energy Your DensityEnergy U.S.-China Electric Vehicle and03/02Report |to

  10. LLNV-WO1000-2009-0002-EA | 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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual SiteofEvaluatingGroup |Jilin Zhongdiantou NewKorea PartsLLNL Energy Flow Charts Jump

  11. LLNV-WO1000-2009-0034-CX | 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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual SiteofEvaluatingGroup |Jilin Zhongdiantou NewKorea PartsLLNL Energy Flow Charts

  12. Microsoft Word - 01-3199 Rev 6 Final w_o signature

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC)Integrated Codes |IsLove Your HomeOverviewCleanupShipping Form Instructions * HowWIPP

  13. DOI-BLM-NV-WO10-2014-0002-CX | 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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualProperty EditCalifornia:PowerCER.pngRoofs andCrops Ltd Jump1-EA Jump to: navigation,

  14. Using Heuristics to Solve the Dedicated Aircraft Recovery Problem ...

    E-Print Network [OSTI]

    2001-11-12T23:59:59.000Z

    Nov 12, 2001 ... *Email: mi chael@loeve . i nfo. FDB (Log ist ic Deve lop m ent), A lberts lund, Den ma rk t Email: k im @car m en.se. C a r m en Consu lt ing, ...

  15. Sensorless Control Method and Apparatus for A Motor Drive System http://www.wipo.int/pctdb/en/wo.jsp?IA=WO2005%2F008890&DISPLAY=STATUS

    E-Print Network [OSTI]

    Wu, Bin

    position and/or speed under variable types of loading conditions. A control system model (300) is generated that allows variable setting of an initial rotor position to generate estimated rotor position and speed controller (322), a current controller (324), and a variable load component (310). During operation, EKF

  16. Effect of Bisphenol A on Drug Efflux in BeWo, a Human Trophoblast-like Cell Line

    E-Print Network [OSTI]

    Audus, Kenneth L.; Jin, H.

    2005-01-01T23:59:59.000Z

    & Benet LZ P-glycoprotein (P-gp/MDR1)-mediated efflux of sex-steriod hormones and modulation of P-gp expression in vitro. Pharma Res 2004; 21:1284-1293. [35] Zampieri L, Bianchi P, Ruff P & Arbuthnot P Differential modulation by estradiol of P...

  17. Disperses leo em gua (o/w) ou gua em leo (w/o) Fase contnua / fase dispersa.

    E-Print Network [OSTI]

    Loh, Watson

    cristalinas Sistemas trifásicos : o + LC + w (Friberg) 3-fases #12;Emulsões de petróleo Asphaltene-resin colloidal aggregates formed by association of asphaltenes and resins add rigidity to the oil-water interface. Asphaltene-resin colloidal Aggregate Resin Molecule Amplified View of the Interface Aqueous phase #12;Com

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    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHighandSWPA / SPRA / USACE SWPAURTeC:8CO6 Figureand ProjectHEAT24,3

  19. c12) United States Patent (54) METHODS AND SYSTEMS FOR PROVIDING

    E-Print Network [OSTI]

    Shamos, Michael I.

    . Brizendine et al. wo wo wo FOREIGN PATENT DOCUMENTS W0-93/13488 A1 W0-94/04979 A1 W0-99/12103 A2 7/1993 3

  20. Correlation between surface chemistry, density and band gap in...

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

    of WO3 films. The XPS analyses indicate the formation of stoichiometric WO3 with tungsten existing in fully oxidized valence state (W6+). However, WO3 films grown at high...

  1. Waste Characterization, Reduction, and Repackaging Facility ...

    Office of Environmental Management (EM)

    Operations, EP-WCRR-WO-DOP-0233 Waste Characterization, Reduction, and Repackaging Facility (WCRRF) Waste Characterization Glovebox Operations, EP-WCRR-WO-DOP-0233 The documents...

  2. Nitrogen-incorporation induced changes in the microstructure...

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

    in the microstructure of nanocrystalline WO3 thin films. Abstract: Nitrogen doped tungsten oxide (WO3) films were grown by reactive magnetron sputter-deposition by varying the...

  3. Seismic Interstory Drift Demands in Steel Friction Damped Braced Buildings 

    E-Print Network [OSTI]

    Peternell Altamira, Luis E.

    2010-01-16T23:59:59.000Z

    ) ......................................................................................... 31 viii Page Figure 4.4: Coulomb and Viscous Friction block (TheMathWorks 2008) ...................... 33 Figure 4.5: SIMULINK model for verification of the SAP2000 friction damped brace model behavior... of the SAP2000 analytical model of the FDB .................................................... 33 Table 5.1: Peak interstory drift ratio of the different damper configurations subjected to the series of BSE-1 records...

  4. UIMC DEPARTMENT OF PATHOLOGY MEDICAL SERVICE PLAN Clinical Pathology Molecular Pathology Lab Patient Information Label

    E-Print Network [OSTI]

    Dai, Yang

    lymphoma 202.8__ Other lymphomas 204.00 Acute lymphoblastic leukemia, w/o mention of remission 205.00 Acute myeloid leukemia w/o mention of remission 205.01 Acute myeloid leukemia in remission 205.10 Chronic myelogenous leukemia, w/o mention of remission 206.00 Acute monocytic leukemia, w/o mention of remission 208

  5. www.kit.edu RESEARCH TO BUSINESS

    E-Print Network [OSTI]

    Stein, Oliver

    auf den Campus Ost ein. Wo kommt der Kraftstoff her? Ist der Verbrennungsmotor ein Auslaufmodell? Wie

  6. A Software Engineering Approach to Constraint Programming Systems Ka Boon Kevin Ng

    E-Print Network [OSTI]

    Henz, Martin

    Application Technologies Honeywell Automation and Control Solutions kevin.ng@honeywell.com Chiu Wo Choi Dept

  7. 1528 IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIOIJFS ml 40 wo 7, JULY 1992 Modal S-Matrix Design of Metal Finned Waveguide

    E-Print Network [OSTI]

    Bornemann, Jens

    received August 19, 199 1; revised January 25, 1992. J. Bomemann is with the Department of E. C. E., University of Victoria, P.O. Box 3055, Victoria, BC v8W3P6, Canada. F. Arndt is with the Microwave Department

  8. A T IT S A T IT S S C I E N C E SECURITY WO R ST B E S T A Special...

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

    unlike other industrialized nations, the U.S. saw a decline in the number of American students receiving science and engineering degrees. 3 From the 1950s until 1995, the...

  9. A T IT S A T IT S S C I E N C E SECURITY WO R ST B E S T A Special...

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

    Better Controls Needed over Weapons-Related Information and Technology." 1990 January: Secretary of Energy Advisory Board (SEAB) is chartered as the highest level...

  10. doped Y3Al5O12, NaBi(WO4)2 and LiNbO3 crystals as optical temperature sensors

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    the possible applications one should note temperature monitoring in highly corrosive media, electrical power ratio (ACR). Thus the capabilities of lithium niobate crystal doped with Yb3+ ions as a material for OTS

  11. doped Y3Al5O12, NaBi(WO4)2 and LiNbO3 crystals as optical temperature sensors

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    the possible applications one should note temperature monitoring in highly corrosive media, electrical power OTS based on absorption coefficient ratio (ACR). Thus the capabilities of lithium niobate crystal

  12. Mechanistic Aspects and Reaction Pathways for Oxidative Coupling of Methane on Mn/Na2WO4/SiO2 Catalysts

    E-Print Network [OSTI]

    Iglesia, Enrique

    required in indirect routes involving CH4 reforming and Fischer­Tropsch synthesis,3 while producing light

  13. Multidrug resistance-associated protein (MRP) isoforms and the breast cancer resistance protein (BCRP) mediate sulfate conjugate efflux out of BeWo cells

    E-Print Network [OSTI]

    Audus, Kenneth L.; Mitra, Pallabi

    2010-01-01T23:59:59.000Z

    the capacity of promoting elimination of drugs and natural substances by sulfation (Sodha and Schneider, 1984, Stanley et al., 2001). Since sulfate metabolites bear a negative charge at physiological pH it is likely that passive diffusion would... brush border membrane (St-Pierre et al., 2000, Azzaroli et al., 2007). MRP1 and MRP5 are expressed on both apical and basolateral membranes (St-Pierre et al., 2000, Atkinson et al., 2003, Meyer Zu Schwabedissen et al., 2005). The objective...

  14. The perceptual reality of synesthetic colors Thomas J. Palmeri*

    E-Print Network [OSTI]

    Blake, Randolph

    a battery of tasks to an individual who experiences the rare condition termed synesthesia, whereby anomalous An Initial Characterization of WO's Synesthesia. WO is an adult male who has experienced lexical sy

  15. affect gene activity: Topics by E-print Network

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

    the desired activity. Here we show that re-emulsification of wo emulsions gives water-in-oil-buffered saline; wo, water-in-oil; wow, water-in-oil-in- water. 0003-2697 -...

  16. Reflection High-Energy Electron Diffraction Beam-Induced Structural...

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

    Beam-Induced Structural and Property Changes on WO3 Thin Films. Reflection High-Energy Electron Diffraction Beam-Induced Structural and Property Changes on WO3 Thin...

  17. A Cognitive Approach to Mandarin Conditionals

    E-Print Network [OSTI]

    Yang, Fan-Pei

    2007-01-01T23:59:59.000Z

    open-guts le A_Particle ‘I have openly committed acts (of cheating)’ wo I yiw eiopen-guts le A_Particle ‘I have openly committed acts (of cheating)’ wo I yiw ei

  18. The Decidability of the Existential Theory of the Poset of Recursively Enumerable Degrees with Jump Relations

    E-Print Network [OSTI]

    Lempp, Steffen

    and Slaman [HaSl] (cf. [SlWo]), Jockusch and Soare (unpublished, cf. [Lr1]), Jockusch and Slaman [Jo

  19. Greg Pfister Affiliation: Free at Last!

    E-Print Network [OSTI]

    Space WoW Second Life IM service Amazon EC2, Google App Engine, Enomaly, Cassat (energy), Intuit Quick

  20. Preventing CO poisoning: Tracking the impact of legislative and

    E-Print Network [OSTI]

    · Exemptions for buildings w/o or non-adjacent: ­ Fossil fuel burning furnaces, boilers, water heaters

  1. Electric, Gas, and Electric/Gas Energy Options for Cold-Air HVAC Systems 

    E-Print Network [OSTI]

    Meckler, G.

    1989-01-01T23:59:59.000Z

    is distributed at 53" to 58OF from the central plant via integrated sprinkler piping. FICUs, illustrated in Figure 1, sensibly cool recirculated air as required, mix it with the 40°F ventilation air, and supply the mixed air at a constant volume. Figure 1.... Key: 80 1. Outside air enlaring enthalpy wheel, 91'FDE. 76'FWB. 2. Outside air leaving enlhalpy wheel. BI'FDB, 68qr. 3. Primary air leaving supply fan. 8SFDB. 68gr. 4. Primary air leaving ice cail. 4UFDB. 36qr.. sat. 5, Room condition. 7SFDE. 4O...

  2. File:01AKALandUseConsiderations.pdf | 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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand JumpConceptual Model,DOEHazelPennsylvania:57427°,Ferry County,Glass Buttes- Transmission.pdf0FD-b

  3. www.dol.gov/wb whygreenisyourcolorA Wo m a n 's G u i d e t o a S u s t a i n a b l e C a r e e r

    E-Print Network [OSTI]

    Gelfond, Michael

    Energy 18 Environmental Protection 19 Green Building and Energy Efficiency 20 Doing Your Own Research 22 #12;TABLE OF CONTENTS HOW TO USE THIS GUIDE GLOSSARY Why Green Is Your Color: A Woman's Guide Why Is Green Good for Women? Green Occupations Educating Yourself For a Green Career Finding Your

  4. S U NTM U L T R ATM 10 WO R K S T A T I O N THE POWERFUL, EXPANDABLE ULTRA SYSTE M THAT ' S E A SY TO A FFORD.

    E-Print Network [OSTI]

    MacAdam, Keith

    : +886-2-514-0567 THAILAND: +662-636-1555 TURKEY: +90-212-236-3300 UNITED ARAB EMIRATES: +971-4-366-333 UNITED KINGDOM: +44-1-276-20444 UNITED STATES: +1-800-821-4643 VENEZUELA: +58-2-286-1044 WORLDWIDE

  5. S U NTM U L T R ATM 6 0 WO R K S T A T I O N THE NEXT LEVEL IN MULTIPROCE S S ING WORKS TATION S.

    E-Print Network [OSTI]

    MacAdam, Keith

    -MHz PCI technology, and the 120-MHz, 1.9 GB/sec., crossbar-switch UPA interconnect delivers product line--which protects your investment. ·Modular design and 120-MHz,1.9 GB/sec. UPA interconnect: +370-729-8468 LUXEMBOURG: +352-49-11-33-1 MALAYSIA: +603-264-9988 MEXICO: +52-5-258-6100 NETHERLANDS

  6. An experimental investigation of the urea-water decomposition and selective catalytic reduction (SCR) of nitric oxides with urea using V2O5-WO3-TiO2 catalyst.

    E-Print Network [OSTI]

    Johar, Jasmeet Singh

    2005-11-01T23:59:59.000Z

    ) stream. The decomposition experiments were conducted with a number of oxygen (O2) compositions (0, 1, 10, and 15%) over the temperature range of 227oC to 477oC. The study showed ammonia (NH3), carbon-dioxide (CO2) and nitric oxide (NO) as the major...

  7. C O N T A C T S F O R C U R R E N T & F O R M E R WO R K E R S

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office511041clothAdvanced Materials Advanced. C o w l i t z C o . C l a r k C o . C l a r k C oi . .- 3 'i

  8. Representing the Continuum between Arguments and Adjuncts within Predicate-Frames

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    -list of verbs 2,560 49 % 4,761 46 % de-list of verbs 4,954 95 % 9,416 91 % 5,190 100 % 10,364 100 % Table 1 with the particle wo is considered as an argument. In the de-list, every complement marked with the particle de is considered as an adjunct. Count Arguments / adjuncts wo-list of examples 1,041,818 504,391 (wo) de-list

  9. A newsletter for commercial vegetable growers prepared by the Purdue University Cooperative Extension Service

    E-Print Network [OSTI]

    Ginzel, Matthew

    · agriculture takes center stage at Bio-econoMy event · ivga MeMBershiP reneWal aPPlication · 2007 MidWest Wo

  10. EMSL - microfabrication

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

    microfabrication en Reflection High-Energy Electron Diffraction Beam-Induced Structural and Property Changes on WO3 Thin Films. http:www.emsl.pnl.govemslwebpublications...

  11. microfabrication | EMSL

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

    microfabrication Leads No leads are available at this time. Reflection High-Energy Electron Diffraction Beam-Induced Structural and Property Changes on WO3 Thin Films....

  12. Data:29e29f7e-56af-45af-b079-9612617f0108 | Open Energy Information

    Open Energy Info (EERE)

    20140301 End date if known: Rate name: Time of Use Residential Service wo Electric Thermal Storage (rate 25 OFF) Sector: Residential Description: Any residential consumers...

  13. annular lipids deduced: Topics by E-print Network

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

    Open Access Theses and Dissertations Summary: ??The preparation and properties of water-in-oil (WO) emulsions stabilised solely by adsorbed surface-active solid lipid...

  14. N T Ex s E L Rabih Talhouk Graduate Council Chairperson 4386 rtalhouk@aub.edu.lb College Hall Room 432

    E-Print Network [OSTI]

    Shihadeh, Alan

    (2192/317) urex Hall (3244) Ne Wo en's Dor s (3362) Fire 5555 E er ency edical Assistance 7777 rotec

  15. Silicon nitride having a high tensile strength

    DOE Patents [OSTI]

    Pujari, Vimal K. (Northboro, MA); Tracey, Dennis M. (Medfield, MA); Foley, Michael R. (Oxford, MA); Paille, Norman I. (Oxford, MA); Pelletier, Paul J. (Sutton, MA); Sales, Lenny C. (Grafton, MA); Willkens, Craig A. (Worcester, MA); Yeckley, Russell L. (Latrobe, PA)

    1998-01-01T23:59:59.000Z

    A ceramic body comprising at least about 80 w/o silicon nitride and having a mean tensile strength of at least about 800 MPa.

  16. Solar | Department of Energy

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

    Soft costs now account for more than 60% of the total price of installing residential solar energy systems. wo...

  17. Physical properties of erbium implanted tungsten oxide films deposited by reactive dual magnetron sputtering

    E-Print Network [OSTI]

    Mohamed, Sodky H.; Anders, Andre

    2006-01-01T23:59:59.000Z

    of erbium implanted tungsten oxide films deposited byDual magnetron sputtering; tungsten oxide films; Er ionoptical waveguides [3,5]. Tungsten oxide (WO 3 ) thin films

  18. WPP, No. 49

    E-Print Network [OSTI]

    1980-01-01T23:59:59.000Z

    Houde, R. A. sounds. ' Huizinga, E. Néerlandaise (1967) 'APhonétique Experimentale. Huizinga, E. 'Uber die stello, woGebildet Wird. ' Archives Huizinga, E. and A. Moolenae-Bij1

  19. Physical properties and surface/interface analysis of nanocrystalline...

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

    and surfaceinterface analysis of nanocrystalline WO3 films grown under variable oxygen gas flow rates. Physical properties and surfaceinterface analysis of nanocrystalline...

  20. Preparation of tungsten oxide

    DOE Patents [OSTI]

    Bulian, Christopher J. (Yankton, SD); Dye, Robert C. (Los Alamos, NM); Son, Steven F. (Los Alamos, NM); Jorgensen, Betty S. (Jemez Springs, NM); Perry, W. Lee (Jemez Springs, NM)

    2009-09-22T23:59:59.000Z

    Tungsten trioxide hydrate (WO.sub.3.H.sub.2O) was prepared from a precursor solution of ammonium paratungstate in concentrated aqueous hydrochloric acid. The precursor solution was rapidly added to water, resulting in the crash precipitation of a yellow white powder identified as WO.sub.3.H.sub.2O nanosized platelets by x-ray diffraction and scanning electron microscopy. Annealing of the powder at 200.degree. C. provided cubic phase WO.sub.3 nanopowder, and at 400.degree. C. provided WO.sub.3 nanopowder as a mixture of monoclinic and orthorhombic phases.

  1. Data:42858d25-ff26-41da-819b-fa2bbe81d2e6 | Open Energy Information

    Open Energy Info (EERE)

    Minnesota Power Inc Effective date: 20130101 End date if known: Rate name: MUNICIPAL PUMPING WO DEMAND METER Sector: Commercial Description: To electric service supplied to a...

  2. PLEASE SCROLL DOWN FOR ARTICLE This article was downloaded by: [Kyusyhu University

    E-Print Network [OSTI]

    Weng, Lin

    -Killing form of g , (the inner poduct of the highest long root is t,wo.) then d ~ mg Z : J U ( m )J a ( n - m

  3. To build a photoelectrochemical (PEC) system that produces hydrogen fuel directly from water using sunlight as the energy source.

    E-Print Network [OSTI]

    -7 -6 -5 -4 -3 Fe 2 O 3 2.2 eV TiO 2 3.0 eV WO 3 2.8 eV ZnO 3.2 eV GaN 3.4 eV 0 -1 1 2 3 H 2O/O 2 H 2 #12;7 WO3 Bandgap versus Current AbsorptionWO3 Bandgap versus Current Absorption Because of its high Wavelength nm Global tilt W*m-2*nm-1WO3 Lowering Eg Increases absorption current Lowering Eg Increases

  4. On the possibility to search for double beta decay of initially unstable (alpha/beta radioactive) nuclei

    E-Print Network [OSTI]

    V. I. Tretyak; F. A. Danevich; S. S. Nagorny; Yu. G. Zdesenko

    2004-04-13T23:59:59.000Z

    Possibilities to search for double beta decay of alpha/beta unstable nuclei, many of which have higher energy release than "conventional" (beta stable) double beta decay candidates, are discussed. First experimental half-life limits on double beta decay of radioactive nuclides from U and Th families (trace contaminants of the CaWO_4, CdWO_4 and Gd_2SiO_5 scintillators) were established by reanalyzing the data of low-background measurements in the Solotvina Underground Laboratory with these detectors (1734 h with CaWO_4, 13316 h with CdWO_4, and 13949 h with Gd_2SiO_5 crystals).

  5. Medieninformation Kommunikation und Medien

    E-Print Network [OSTI]

    Hoffmann, Rolf

    Epiphyten, Prof. Dr. Günter Gerlach (München) Unterwegs in den �berschwemmungswäldern Süd-Venezuelas, wo man

  6. The genus Macroteleia Westwood in Middle Miocene amber from Peru (Hymenoptera, Platygastridae s.l., Scelioninae)

    E-Print Network [OSTI]

    Perrichot, Vincent; Antoine, Pierre-Olivier; Salas-Gismondi, Rodolfo; Flynn, John J.; Engel, Michael S.

    2014-06-17T23:59:59.000Z

    paleontology Genus Macroteleia Westwood, 1835 Macroteleia yaguarum Perrichot & Engel, sp. n. http://zoobank.org/8D3E135D-8273-4A15-A97D-BD4FDB0C76ED Figs 1–2 Type material. Holotype MUSM-A-2006-4a, female, in amber fragment from the Pebas Formation (Mollusc... | Received 29 May 2014 | Accepted 1 June 2014 | Published 17 Juny 2014 http://zoobank.org/6CD8F6A2-5D5E-4B25-AEB6-B0A4425EF2AB Citation: Perrichot V, Antoine P-O, Salas-Gismondi R, Flynn JJ, Engel MS (2014) The genus Macroteleia Westwood...

  7. Analysis of a proposed fuel freezing mechanism in a rod bundle 

    E-Print Network [OSTI]

    Nguyen-Wayne, David Loc

    1983-01-01T23:59:59.000Z

    void thermite fuel simulant (80 w/o UO2, 20 w/o Mo at about 3470 K, approximately 330 K superheat) and stainless steel walls. The main system variables in these tests were the initial wall temperatures and the fuel downward injection pressures...

  8. Silicon nitride ceramic having high fatigue life and high toughness

    DOE Patents [OSTI]

    Yeckley, Russell L. (Oakham, MA)

    1996-01-01T23:59:59.000Z

    A sintered silicon nitride ceramic comprising between about 0.6 mol % and about 3.2 mol % rare earth as rare earth oxide, and between about 85 w/o and about 95 w/o beta silicon nitride grains, wherein at least about 20% of the beta silicon nitride grains have a thickness of greater than about 1 micron.

  9. J. Electrochem. Soc., Vol. 140, No. 5, May 1993 9 The Electrochemical Society, Inc. 1471 assumed from the edge of the SiO2 conduction band corre-

    E-Print Network [OSTI]

    Economou, Demetre J.

    centers excited by hot electrons accelerated by the high field of about 22 MV/cm in the SiQ layer of pure water, citric acid [1.5 weight percent (w/o)], and am- monium citrate (1.5 w/o). The spectrum, wafer temperature, and etc

  10. Service Interruption Notices Between 06/06/14 and 07/05/14

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Strycharz Proj Phone: 5-2668 WO#: 14-017142-000 Shop/Crew: Air Conditioning Autoclaves Cold Water Cold/Crew: Air Conditioning Autoclaves Cold Water Cold Storage Compressed Air Computers Condenser Pumps Distilled Phone: 7-4768 WO#: Shop/Crew: Air Conditioning Autoclaves Cold Water Cold Storage Compressed Air

  11. Fabrication and characterization of nano-engineered membranes for oil-water separation

    E-Print Network [OSTI]

    Solomon, Brian R. (Brian Richmond)

    2013-01-01T23:59:59.000Z

    The focus of this thesis is the design and testing of membranes for separation of water-in- oil (w/o) emulsions. A polycarbonate membrane treated with octadecyltrichlorosilane (OTS) is used to filter a 3 wt% w/o emulsion. ...

  12. Electrochromic devices embodying W oxide/Ni oxide tandem films

    SciTech Connect (OSTI)

    Azens, A.; Vaivars, G.; Veszelei, M.; Kullman, L.; Granqvist, C. G.

    2001-06-15T23:59:59.000Z

    Six-layer electrochromic devices of indium tin oxide (ITO)/NiO{sub x}H{sub y}/WO{sub 3}/ZrP-electrolyte/WO{sub 3}/ITO were made by reactive dc magnetron sputtering and lamination. The WO{sub 3} layer between the acidic ZrP-based electrolyte and the NiO{sub x}H{sub y} layer served as optically passive protective layer. The optical inactivity of the protective layer could be understood from arguments based on electron density of states. {copyright} 2001 American Institute of Physics.

  13. Synthesis of compositionally-defined single-crystalline Eu³?-activated molybdate-tungstate solid solution composite nanowires and observation of charge transfer in a novel class of 1D CaMoO?-CaWO?: Eu³? – 0D CdS/CdSe QD nanoscale heterostructures

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Han, Jinkyi [Brookhaven National Lab. (BNL), Upton, NY (United States); McBean, Coray [State Univ. of Stony Brook, Stony Brook, NY (United States); Wang, Lei [State Univ. of Stony Brook, Stony Brook, NY (United States); Jaye, Cherno [National Inst. of Standards and Technology (NIST), Gaithersburg, MD (United States); Liu, Haiqing [State Univ. of Stony Brook, Stony Brook, NY (United States); Fischer, Daniel A. [National Inst. of Standards and Technology (NIST), Gaithersburg, MD (United States); Wong, Stanislaus S. [Brookhaven National Lab. (BNL), Upton, NY (United States); State Univ. of Stony Brook, Stony Brook, NY (United States)

    2015-02-19T23:59:59.000Z

    As a first step, we have synthesized and optically characterized a systematic series of one-dimensional (1D) single-crystalline Eu³?-activated alkaline-earth metal tungstate/molybdate solid solution composite CaW??xMoxO? (0 ? ‘x’ ? 1) nanowires of controllable chemical composition using a modified template-directed methodology under ambient room-temperature conditions. Extensive characterization of the resulting nanowires has been performed using X-ray diffraction, electron microscopy, and optical spectroscopy. The crystallite size and single crystallinity of as-prepared 1D CaW??xMoxO?: Eu³? (0 ? ‘x’ ? 1) solid solution composite nanowires increase with increasing Mo component (‘x’). We note a clear dependence of luminescence output upon nanowire chemical composition with our 1D CaW??xMoxO?: Eu³? (0 ? ‘x’ ? 1) evincing the highest photoluminescence (PL) output at ‘x’ = 0.8, amongst samples tested. Subsequently, coupled with either zero-dimensional (0D) CdS or CdSe quantum dots (QDs), we successfully synthesized and observed charge transfer processes in 1D CaW1-xMoxO4: Eu3+ (‘x’ = 0.8) – 0D QD composite nanoscale heterostructures. Our results show that CaW??xMoxO?: Eu³? (‘x’ = 0.8) nanowires give rise to PL quenching when CdSe QDs and CdS QDs are anchored onto the surfaces of 1D CaW??xMoxO?: Eu³? nanowires. The observed PL quenching is especially pronounced in CaW??xMoxO?: Eu³? (‘x’ = 0.8) – 0D CdSe QD heterostructures. Conversely, the PL output and lifetimes of CdSe and CdS QDs within these heterostructures are not noticeably altered as compared with unbound CdSe and CdS QDs. The difference in optical behavior between 1D Eu³? activated tungstate and molybdate solid solution nanowires and the semiconducting 0D QDs within our heterostructures can be correlated with the relative positions of their conduction and valence energy band levels. We propose that the PL quenching can be attributed to a photo-induced electron transfer process from CaW??xMoxO?: Eu³? (‘x’ = 0.8) to both CdSe and CdS QDs, an assertion supported by complementary NEXAFS measurements.

  14. Synthesis of compositionally-defined single-crystalline Eu³?-activated molybdate-tungstate solid solution composite nanowires and observation of charge transfer in a novel class of 1D CaMoO?-CaWO?: Eu³? – 0D CdS/CdSe QD nanoscale heterostructures

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Han, Jinkyi; McBean, Coray; Wang, Lei; Jaye, Cherno; Liu, Haiqing; Fischer, Daniel A.; Wong, Stanislaus S.

    2015-02-19T23:59:59.000Z

    As a first step, we have synthesized and optically characterized a systematic series of one-dimensional (1D) single-crystalline Eu³?-activated alkaline-earth metal tungstate/molybdate solid solution composite CaW??xMoxO? (0 ? ‘x’ ? 1) nanowires of controllable chemical composition using a modified template-directed methodology under ambient room-temperature conditions. Extensive characterization of the resulting nanowires has been performed using X-ray diffraction, electron microscopy, and optical spectroscopy. The crystallite size and single crystallinity of as-prepared 1D CaW??xMoxO?: Eu³? (0 ? ‘x’ ? 1) solid solution composite nanowires increase with increasing Mo component (‘x’). We note a clear dependence of luminescence output upon nanowire chemical composition withmore »our 1D CaW??xMoxO?: Eu³? (0 ? ‘x’ ? 1) evincing the highest photoluminescence (PL) output at ‘x’ = 0.8, amongst samples tested. Subsequently, coupled with either zero-dimensional (0D) CdS or CdSe quantum dots (QDs), we successfully synthesized and observed charge transfer processes in 1D CaW1-xMoxO4: Eu3+ (‘x’ = 0.8) – 0D QD composite nanoscale heterostructures. Our results show that CaW??xMoxO?: Eu³? (‘x’ = 0.8) nanowires give rise to PL quenching when CdSe QDs and CdS QDs are anchored onto the surfaces of 1D CaW??xMoxO?: Eu³? nanowires. The observed PL quenching is especially pronounced in CaW??xMoxO?: Eu³? (‘x’ = 0.8) – 0D CdSe QD heterostructures. Conversely, the PL output and lifetimes of CdSe and CdS QDs within these heterostructures are not noticeably altered as compared with unbound CdSe and CdS QDs. The difference in optical behavior between 1D Eu³? activated tungstate and molybdate solid solution nanowires and the semiconducting 0D QDs within our heterostructures can be correlated with the relative positions of their conduction and valence energy band levels. We propose that the PL quenching can be attributed to a photo-induced electron transfer process from CaW??xMoxO?: Eu³? (‘x’ = 0.8) to both CdSe and CdS QDs, an assertion supported by complementary NEXAFS measurements.« less

  15. Meteorological Tables for Determination of Precipitable Water, Temperatures and Pressures Aloft for a Saturated Pseudoadiabatic Atmosphere -- in the Metric System

    E-Print Network [OSTI]

    Eihle, W. O.; Powers, R. J.; Clark, R.A.

    TR-16 1968 Meteorological Tables for Determination of Precipitable Water, Temperatures and Pressures Aloft for a Saturated Pseudoadiabatic Atmosphere?in the Metric System W.O. Eihle R.J. Powers R.A. Clark...

  16. Building America Whole-House Solutions for New Homes: Rural Developmen...

    Energy Savers [EERE]

    HERS-8 homes (60 wo PV), with double-stud walls heavy insulation, low-load sealed-combustion gas space heaters, triple-pane windows, solar water heating, and PV. Rural...

  17. arbor project: Topics by E-print Network

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

    T P "'" 51166 2" "wo PAGE OF Because Rathbun, Julie A. 60 Proceedings of the 9th Conference on Computational Natural Language Learning (CoNLL), pages 165168, Ann Arbor, June...

  18. A MultiAir / MultiFuel Approach to Enhancing Engine System Efficiency

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

    at Chrysler * Test the multi-fuel engine at ANL, first with the surrogate engine (wo optics), then with the Alpha 1 engine (w optics) * Begin the design of the Alpha 2 engine 17...

  19. On irreducibility of standard modules for generic representations.pdf

    E-Print Network [OSTI]

    2003-12-09T23:59:59.000Z

    web), ~,~).f', f$ where s2' is the standard Whittaker functional on I(wo(v), W,,(Q)). By Proposition 7.3 of [23], Conjecture 1.1 is true and therefore the denominator ...

  20. Vector Quantization Codebook Generation Method

    E-Print Network [OSTI]

    Cockshott, P.; Lambert, R.B.; US patent 6438268 International Patent Application publication no wo 98/18262 Publication date 30 april 1998; Application no pct/gb97/02841 [More Details

    Cockshott,P. Lambert,R.B. US patent 6438268 International Patent Application publication no wo 98/18262 Publication date 30 april 1998; Application no pct/gb97/02841

  1. Charles Linder Research Interests and Activities

    E-Print Network [OSTI]

    Vardi, Amichay

    for the development of novel membranes for water purification and energy storage devices. The objective was to study "Ordered Ion Exchange Membranes". WO2004005380 20040115 ) 3) "Building DefectFree Nanostructured films

  2. airway diameter behavior: Topics by E-print Network

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

    of the interionic Boyer, Edmond 149 Affect of Viscosity and Droplet Diameter on water-in-oil (wo) Emulsions: An Experimental Study CiteSeer Summary: AbstractThe influence of...

  3. abdominal aortic diameter: Topics by E-print Network

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

    A. Diaferio; K. Dolag 2005-10-28 416 Affect of Viscosity and Droplet Diameter on water-in-oil (wo) Emulsions: An Experimental Study CiteSeer Summary: AbstractThe influence of...

  4. aqueous colloidal systems: Topics by E-print Network

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

    on a hydrophobic surface or in oil and then dried monodisperse water-in-oil (WO) emulsions. The waterphaseispumped from one end of the outer square capillary 122 Phase and...

  5. Silicon nitride having a high tensile strength

    DOE Patents [OSTI]

    Pujari, V.K.; Tracey, D.M.; Foley, M.R.; Paille, N.I.; Pelletier, P.J.; Sales, L.C.; Willkens, C.A.; Yeckley, R.L.

    1998-06-02T23:59:59.000Z

    A ceramic body is disclosed comprising at least about 80 w/o silicon nitride and having a mean tensile strength of at least about 800 MPa. 4 figs.

  6. Subscriber access provided by DUKE UNIV Nano Letters is published by the American Chemical Society. 1155 Sixteenth Street

    E-Print Network [OSTI]

    Liu, Jie

    electrochromic materials,4,5 and sensors.6,7 Moreover, investigation on properties of nanosized metal oxides and ferroelectricity in the host WO3 system.10 In addition, WOx is an excellent candidate for electrochromic materials4

  7. Electropolymerized Polyaniline Stabilized Tungsten Oxide Nanocomposite Films: Electrochromic Behavior and Electrochemical

    E-Print Network [OSTI]

    Guo, John Zhanhu

    Electropolymerized Polyaniline Stabilized Tungsten Oxide Nanocomposite Films: Electrochromic. The optical properties and electrochemical capacitive behaviors of the composite films for electrochromic (EC electrochromism at both positive and negative potentials arising from PANI and WO3, respectively. A coloration

  8. DYNAMIC BEHAVIOR OF FOUNDATIONS: AN EXPERIMENTAL STUDY IN A CENTRIFUGE

    E-Print Network [OSTI]

    Hushman, B.

    1984-01-01T23:59:59.000Z

    1975. Sco tt, R. F . , "Centrifuge Studies of Cyclic LateDynam i c Pile Tests by Centrifuge Mo deling ," Proc. 6th WoADVANCES IN GEOTECHNICAL CENTRIFUGE MODELING A symposium on

  9. Competitive Oxidation and Reduction of Aliphatic Alcohols over...

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

    bond to give alkoxy (RO ) bound to W(VI) centers and a proton (H+) attached to the terminal oxygen atom of a tungstyl group (WO). Two protons adsorbed onto the cluster readily...

  10. Structure-property Relationships in Pure and Doped Epitaxial Tungsten Trioxide Thin Films

    E-Print Network [OSTI]

    Structure-property Relationships in Pure and Doped Epitaxial Tungsten Trioxide Thin Films Principal-property relationships of well- defined epitaxial tungsten trioxide (WO3) films with and without dopants, and thereby

  11. Unreviewed Safety Question (USQ) Process Rev

    Office of Environmental Management (EM)

    EP-WCRR-WO-DOP-0233, R. 36 Date: 73012 Title: Processing Waste in the Waste Characterization Glovebox Summary - Based on the evaluation presented in this worksheet, the: D...

  12. Grazing value and management of tobosa grass (Hilaria mutica (Buckl.) Benth.) on the Texas Range Station near Barnhart

    E-Print Network [OSTI]

    Gonza?lez, Marti?n H

    1957-01-01T23:59:59.000Z

    the swot' af 1556s ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ A) Suaaary of plot data fran tbe 1956 belt treaseot survey showing anount of toboea by pastures. Oats represeat ?vorages of five plots on each of the wo no)or soil types . . . AP Analysis...

  13. HOUSEHOLD WILLINGNESS TO RECYCLE ELECTRONIC WASTE - An Application to California

    E-Print Network [OSTI]

    Saphores, Jean-Daniel M; Nixon, Hilary; Ogunseitan, Oladele A; Shapiro, Andrew A

    2006-01-01T23:59:59.000Z

    R. , & Schwer, R. (1998). Solid-waste recycling behavior andL. (1999). Reducing solid waste: Linking recycling toDwyer, W.O. (1995). Solid waste recovery: A review of

  14. Students' mental acts of anticipating in solving problems involving algebraic inequalities and equations

    E-Print Network [OSTI]

    Lim, Kien Hwa

    2006-01-01T23:59:59.000Z

    Raul, Jose, Chela, Vito, Karen, Ali, Elsa, Bella, Talia,Chela, Ali, Talia, Ida, Bella, Maria, Elsa, Karen, and Vito.Talia Jose Ali Raul Bella Chela Karen Less Sophisticated WoU

  15. Updated Costs (June 2011 Basis) for Selected Bituminous Baseline...

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

    Date:2011-Oct-17 Project: Bituminous Baseline Study Case: Case 1 GEE Radiant IGCC wo CO2 Plant Size: 622.1 MW,net Estimate Type: Conceptual Cost Base (Jun) 2011 (x1000) Acct...

  16. WPP, No. 66

    E-Print Network [OSTI]

    1987-01-01T23:59:59.000Z

    a tracing of the same. 1 00 Huizinga, E. Recherches sur unthe mouth nearly shut). Huizinga, E. Uber die stello, wo derbite block inserted. 1 02 Huizinga, E. and A. Moolenaar-Bijl

  17. Dynamics and Ecosystem threats of Bidirectional Cordgrass Hybridization in San Francisco Bay

    E-Print Network [OSTI]

    Strong, Donald R.; Ayres, D R

    2005-01-01T23:59:59.000Z

    native vegetation, in open mudflat. The upper level gardenssalinity of 28 ppt. The mudflat gardens maintained ambientmowed. Salinity (ppt) Date Mudflat Pickle'd w/o p'weed Fig.

  18. TRANSPORT PROPERTIES OF A CHAIN OF ANHARMONIC OSCILLATORS WITH RANDOM FLIP OF VELOCITIES

    E-Print Network [OSTI]

    TRANSPORT PROPERTIES OF A CHAIN OF ANHARMONIC OSCILLATORS WITH RANDOM FLIP OF VELOCITIES C into the hot reservoir, but it is impossible to extract energy for the cold reservoir. In other wo

  19. Ethical Issues in Research with "Vulnerable" and "HardtoReach"

    E-Print Network [OSTI]

    Illinois at Chicago, University of

    are interdependentinterdependent · One can be vulnerable w/o being harmed or d ( d i )wronged (and vice versa) #12;2 Ways women (Subpart B) ADDITIONAL SAFEGUARDS? · handicapped persons · Prisoners (Subpart C) · Children

  20. Climate regulation of fire emissions and deforestation in equatorial Asia

    E-Print Network [OSTI]

    2008-01-01T23:59:59.000Z

    different types of fire, with peat fires emitting up to fourof carbon released from peat and forest fires in IndonesiaM, Wo¨sten H, Page S (2006) PEAT-CO2: assessment of CO2

  1. Diesel Emission Control Technology in Review

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

    Euro 6 for large platforms wo deNOx possible. VW MinNOx, 6-08 Migrating from 1-stage turbo+ HP-EGR to 2-stage turbo+LP-EGR results in higher EGR (reduced NOx) without...

  2. MIN ET AL. VOL. 6 ' NO. 4 ' 35973603 ' 2012 www.acsnano.org

    E-Print Network [OSTI]

    Kim, Sehun

    to undesired termina- tion and poor biosensitivity. Hence, to achieve the precise production of biosensors location. In addition, via the use of a tungsten STM tip coated with a tungsten oxide (WO3) layer, we

  3. Inventory List Item Number Brief Description Price Preferred Vendor

    E-Print Network [OSTI]

    sodium salt $29.62 FISHE C0187 Boric Acid $10.65 VWRSC C0028 Chloroform $8.99 VWRSC C0048 Dextrose, Glucose $14.79 VWRSC C0004 DMEM high glucose, w/ NaHCO3, w/o L-glutamine, w/o sodium pyruvate$4.24 SIGMA C0005 DMEM high glucose, w/L-glutamine, w/NaHCO3, w/out sodium pyruvate$4.16 SIGMA C0024 DMEM, 4500 mg

  4. EndNote Online for Health: guide 1. Registering with EndNote Online p.1

    E-Print Network [OSTI]

    Rzepa, Henry S.

    of the WoS screen. Finally, enter the email and password details that you have set up. Agree to terms of use to proceed. ii. Search for articles in WoS e.g. either on a topic of your choice or enter biomechanic experience on the right-hand side of the screen. Then enter your email address twice as directed and click

  5. Photo-controllable thermoelectric properties with reversibility and photo-thermoelectric effects of tungsten trioxide accompanied by its photochromic phenomenon

    SciTech Connect (OSTI)

    Azuma, Chiori [Faculty of Engineering, University of Yamanashi, 4-3-11 Takeda, Kofu, Yamanashi 400-8511 (Japan); Kawano, Takuto [Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, 4-3-11 Takeda, Kofu, Yamanashi 400-8511 (Japan); Kakemoto, Hirofumi; Irie, Hiroshi, E-mail: hirie@yamanashi.ac.jp [Clean Energy Research Center, University of Yamanashi, 4-3-11 Takeda, Kofu, Yamanashi 400-8511 (Japan)

    2014-11-07T23:59:59.000Z

    The addition of photo-controllable properties to tungsten trioxide (WO{sub 3}) is of interest for developing practical applications of WO{sub 3} as well as for interpreting such phenomena from scientific viewpoints. Here, a sputtered crystalline WO{sub 3} thin film generated thermoelectric power due to ultraviolet (UV) light-induced band-gap excitation and was accompanied by a photochromic reaction resulting from generating W{sup 5+} ions. The thermoelectric properties (electrical conductivity (?) and Seebeck coefficient (S)) and coloration of WO{sub 3} could be reversibly switched by alternating the external stimulus between UV light irradiation and dark storage. After irradiating the film with UV light, ? increased, whereas the absolute value of S decreased, and the photochromic (coloration) reaction was detected. Notably, the opposite behavior was exhibited by WO{sub 3} after dark storage, and this reversible cycle could be repeated at least three times. Moreover, photo-thermoelectric effects (photo-conductive effect (photo-conductivity, ?{sub photo}) and photo-Seebeck effect (photo-Seebeck coefficient, S{sub photo})) were also detected in response to visible-light irradiation of the colored WO{sub 3} thin films. Under visible-light irradiation, ?{sub photo} and the absolute value of S{sub photo} increased and decreased, respectively. These effects are likely attributable to the excitation of electrons from the mid-gap visible light absorption band (W{sup 5+} state) to the conduction band of WO{sub 3}. Our findings demonstrate that the simultaneous, reversible switching of multiple properties of WO{sub 3} thin film is achieved by the application of an external stimulus and that this material exhibits photo-thermoelectric effects when irradiated with visible-light.

  6. Performance of scintillation materials at cryogenic temperatures

    E-Print Network [OSTI]

    V. B. Mikhailik; H. Kraus

    2010-01-29T23:59:59.000Z

    An increasing number of applications of scintillators at low temperatures, particularly in cryogenic experiments searching for rare events, has motivated the investigation of scintillation properties of materials over a wide temperature range. This paper provides an overview of the latest results on the study of luminescence, absorption and scintillation properties of materials selected for rare event searches so far. These include CaWO4, ZnWO4, CdWO4, MgWO4, CaMoO4, CdMoO4, Bi4Ge3O12, CaF2, MgF2, ZnSe and AL2O3-Ti. We discuss the progress achieved in research and development of these scintillators, both in material preparation and in the understanding of scintillation mechanisms, as well as the underlying physics. To understand the origin of the performance limitation of self-activated scintillators we employed a semi-empirical model of conversion of high energy radiation into light and made appropriate provision for effects of temperature and energy transfer. We conclude that the low-temperature value of the light yield of some modern scintillators, namely CaWO4, CdWO4 and Bi4Ge3O12, is close to the theoretical limit. Finally, we discuss the advantages and limitations of different materials with emphasis on their application as cryogenic phonon-scintillation detectors (CPSD) in rare event search experiments.

  7. Massive stars on the verge of exploding: the properties of oxygen sequence Wolf-Rayet stars

    E-Print Network [OSTI]

    Tramper, F; Sanyal, D; Sana, H; de Koter, A; Gräfener, G; Langer, N; Vink, J S; de Mink, S E; Kaper, L

    2015-01-01T23:59:59.000Z

    Context. Oxygen sequence Wolf-Rayet (WO) stars represent a very rare stage in the evolution of massive stars. Their spectra show strong emission lines of helium-burning products, in particular highly ionized carbon and oxygen. The properties of WO stars can be used to provide unique constraints on the (post-)helium burning evolution of massive stars, as well as their remaining lifetime and the expected properties of their supernovae. Aims. We aim to homogeneously analyse the currently known presumed-single WO stars to obtain the key stellar and outflow properties and to constrain their evolutionary state. Methods. We use the line-blanketed non-local thermal equilibrium atmosphere code cmfgen to model the X-Shooter spectra of the WO stars and deduce the atmospheric parameters. We calculate dedicated evolutionary models to determine the evolutionary state of the stars. Results. The WO stars have extremely high temperatures that range from 150 kK to 210 kK, and very low surface helium mass fractions that range f...

  8. Role of word-of-mouth for programs of voluntary vaccination: A game-theoretic approach

    E-Print Network [OSTI]

    Bhattacharyya, Samit; Breban, Romulus

    2015-01-01T23:59:59.000Z

    We propose a model describing the synergetic feedback between word-of-mouth (WoM) and epidemic dynamics controlled by voluntary vaccination. We combine a game-theoretic model for the spread of WoM and a compartmental model describing $SIR$ disease dynamics in the presence of a program of voluntary vaccination. We evaluate and compare two scenarios, depending on what WoM disseminates: (1) vaccine advertising, which may occur whether or not an epidemic is ongoing and (2) epidemic status, notably disease prevalence. Understanding the synergy between the two strategies could be particularly important for organizing voluntary vaccination campaigns. We find that, in the initial phase of an epidemic, vaccination uptake is determined more by vaccine advertising than the epidemic status. As the epidemic progresses, epidemic status become increasingly important for vaccination uptake, considerably accelerating vaccination uptake toward a stable vaccination coverage.

  9. Besedje stare kme?ke delovne šege na Koroškem – steljeraje

    E-Print Network [OSTI]

    Benko, Anja

    2010-01-01T23:59:59.000Z

    dolo?enem podro?ju s pomo?jo rok U? s?ta:rix ?ca:jtix, ?k? ?še ni b?w? ?n? ?c?:st pa ne e?l?:ktrike pa ?tuj k?m?:?ke mexani?za:cije ?ni:so poz?na:li, se je na ?pa:u?rex de?wa:wo u??s? na ?ro:ke. SSKJ + Plet. + delo || ?d?:wo -a s delanje, vezano na... ?lu:ksus. SSKJ – Plet. – paver || ?pa:w?r -ra m kmet U? s?ta:rix ?ca:jtix, ?k? ?še ni b?w? ?n? ?c?:st pa ne e?l?:ktrike pa ?tuj k?m?:?ke mexani?za:cije ?ni:so poz?na:li, se je na ?pa:u?rex de?wa:wo u??s? na ?ro:ke. [nem. der Bauer kmet] SSKJ + (nižje...

  10. Transmission spectra of an electrochromic window based on polyaniline, Prussian blue and tungsten oxide

    SciTech Connect (OSTI)

    Jelle, B.P.; Hagen, G. [Norwegian Inst. of Tech., Trondheim (Norway). Dept. of Applied Electrochemistry

    1993-12-01T23:59:59.000Z

    The demand for energy savings in buildings will increase in the coming years, as the world`s attention is drawn towards environmental aspects and energy economizing. Windows which are able to dynamically control the sun radiation throughput will play an important role. In this respect, the authors have studied two different electrochromic window configurations; one based on the two complementary electrochromic materials polyaniline (PANI) and tungsten oxide (WO{sub 3}), the other one with the electrochromic coating Prussian blue (PB) in addition to PANI and WO{sub 3}. The inclusion of PB enhances the transmission modulation. Integrating over the solar spectrum they find that the window based on PANI and WO{sub 3} is able to regulate 39% of the total solar energy, while with the inclusion of PB they manage to regulate as much as 50% of the sun radiation.

  11. Scandium separation from tungsten crucibles : preliminary investigation into the separation of scandium metal from tungsten metal crucibles using an acid soak process.

    SciTech Connect (OSTI)

    Boyle, Timothy J.; Hess, Ryan Falcone; Neville, Michael Luke; Howard, Panit Clifton

    2013-02-01T23:59:59.000Z

    The first step in an attempt to isolate Sco from a Wo crucible was explored by soaking the samples in a series of organic (HOAc) and inorganic (HCl, H2SO4, H3PO4, HNO3) acids. All samples, except the HOAc, yielded a powder. The weight loss suggests that HNO3 is the most efficient solvent; however, the powders were tentatively identified by PXRD and found to contain both W and Sc by-products. The higher weight loss may also indicate dissolution of the Wo crucible, which was further evidenced upon visual inspection of the crucible. The H3PO4 acid soak yielded the cleanest removal of Sc from the crucible. More work to understand the separation of the Sco from the Wo crucible is necessary but the acid routes appear to hold promise under not as of yet established criteria.

  12. Tweed, Twins, and Holes

    E-Print Network [OSTI]

    Salje, Ekhard K.H.

    2014-07-08T23:59:59.000Z

    " its profile of a twin boundary in a WO3?x layer on triclinic WO3. !b" is a line scan marked by the black line in !a". The effective twin angle at the surface is 1.19°. FIG. 3. !Color online" !a" Topography, !b" current, and !c" PFM amplitude images... their data to find ‘unusual’ twin boundaries with functionalities such as conductivity, transport, polarity and magnetism. Synthetic porous structure are shown in Fig.3 and contain similar functionalities near their extremely extended surfaces...

  13. Surface treatment and protection method for cadmium zinc telluride crystals

    DOE Patents [OSTI]

    Wright, Gomez W. (Nashville, TN); James, Ralph B. (Livermore, CA); Burger, Arnold (Nashville, TN); Chinn, Douglas A. (Livermore, CA)

    2003-01-01T23:59:59.000Z

    A method for treatment of the surface of a CdZnTe (CZT) crystal that provides a native dielectric coating to reduce surface leakage currents and thereby, improve the resolution of instruments incorporating detectors using CZT crystals. A two step process is disclosed, etching the surface of a CZT crystal with a solution of the conventional bromine/methanol etch treatment, and after attachment of electrical contacts, passivating the CZT crystal surface with a solution of 10 w/o NH.sub.4 F and 10 w/o H.sub.2 O.sub.2 in water.

  14. Ionizing Radiation Detector

    DOE Patents [OSTI]

    Wright, Gomez W. (Nashville, TN); James, Ralph B. (Livermore, CA); Burger, Arnold (Nashville, TN); Chinn, Douglas A. (Livermore, CA)

    2003-11-18T23:59:59.000Z

    A CdZnTe (CZT) crystal provided with a native CdO dielectric coating to reduce surface leakage currents and thereby, improve the resolution of instruments incorporating detectors using CZT crystals is disclosed. A two step process is provided for forming the dielectric coating which includes etching the surface of a CZT crystal with a solution of the conventional bromine/methanol etch treatment, and passivating the CZT crystal surface with a solution of 10 w/o NH.sub.4 F and 10 w/o H.sub.2 O.sub.2 in water after attaching electrical contacts to the crystal surface.

  15. Surface Treatment And Protection Method For Cadium Zinc Telluride Crystals

    DOE Patents [OSTI]

    Wright, Gomez W. (Nashville, TN); James, Ralph B. (Livermore, CA); Burger, Arnold (Nashville, TN); Chinn, Douglas A. (Livermore, CA)

    2006-02-21T23:59:59.000Z

    A method for treatment of the surface of a CdZnTe (CZT) crystal that provides a native dielectric coating to reduce surface leakage currents and thereby, improve the resolution of instruments incorporating detectors using CZT crystals. A two step process is disclosed, etching the surface of a CZT crystal with a solution of the conventional bromine/methanol etch treatment, and after attachment of electrical contacts, passivating the CZT crystal surface with a solution of 10 w/o NH4F and 10 w/o H2O2 in water.

  16. Pastaklan Vesla Issue 5

    E-Print Network [OSTI]

    Multiple Contributors

    1978-01-01T23:59:59.000Z

    Bo KclCendrick- .6, 1-0, 19 Allan Andress- 25t^L Ginnio Reynolds- 3^i 36, 4-3 No trades for other fanzines Kathy. Bushman.* 29 Peggy Barilla- 55, 56 Steve Barnes- 73, 84, 93 CAB - Bacovcr Horta Press Issue ;"*5 Rhubarb Publication.../\\ M A?TD TH5?T THERE'S. ? . 1 - ' > ?-^WW I II i,ijw" I Friends t We cano^up with this idea and we organized it and we bought the supplies and wo typed it and we glued it together and wo printed it and we collated7 w&at we printed and...

  17. Fission Product Impact Reduction via Protracted In-core Retention in Very High Temperature Reactor (VHTR) Transmutation Scenarios

    E-Print Network [OSTI]

    Alajo, Ayodeji Babatunde

    2011-08-08T23:59:59.000Z

    is performed, the spent fuel can be partitioned and separated into 3 streams: depleted uranium (to be recycled with plutonium in reactors), TRU and FP. The TRU content of spent fuel is potentially a useable material. TRU can be recycled in advanced reactors... percent depleted uranium and 1.1 percent higher actinides [25]. Based on the 4.6w/o fission product content, it can be estimated that 10GWd/MTU burnup corresponds to about 1.0w/o of fission products in the spent fuel. Given the burnup of U.S. legacy...

  18. DVR Rates Fiscal Year 2014 Division of Veterinary Resources

    E-Print Network [OSTI]

    Bandettini, Peter A.

    veterinarian. Acute and Intensive Care ­ 14/28 Complex Service Price Anesthesia Prep & Induction - Dog $107.04 Anesthesia Prep & Induction - Pig $90.04 Anesthesia Prep & Induction - Rabbit $42.37 Anesthesia Prep w/o Induction - Rabbit $14.50 Anesthesia Recovery - Standard $57.37 Anesthesia Recovery - Complex $172

  19. Chromatic instabilities in cesium-doped tungsten bronze nanoparticles

    SciTech Connect (OSTI)

    Adachi, Kenji, E-mail: kenji-adachi@ni.smm.co.jp; Ota, Yosuke; Tanaka, Hiroyuki; Okada, Mika; Oshimura, Nobumitsu; Tofuku, Atsushi [Ichikawa Research Laboratories, Sumitomo Metal Mining Co., Ltd., Ichikawa 272-8588 (Japan)

    2013-11-21T23:59:59.000Z

    Nanoparticles of alkali-doped tungsten bronzes are an excellent near-infrared shielding material, but exhibit slight chromatic instabilities typically upon applications of strong ultra-violet light or heating in humid environment, which acts detrimentally to long-life commercial applications. Origin of the chromatic instabilities in cesium-doped tungsten bronze has been investigated, and it has been found that the coloration and bleaching processes comprised electronic exchanges which accelerate or depress the polaron excitation and the localized surface plasmon resonance. Coloration on UV illumination is evidenced by electron diffraction as due to the formation of H{sub x}WO{sub 3}, which is considered to take place in the surface Cs-deficient WO{sub 3} region via the double charge injection mechanism. On the other hand, bleaching on heating in air and in humid environment is shown to accompany the extraction of Cs and electrons from Cs{sub 0.33}WO{sub 3} by X-ray photoelectron spectroscopy and X-ray diffraction analysis and is concluded to be an oxidation of Cs{sub 0.33}WO{sub 3} on the particle surface.

  20. FOOD PRESERVATION SERIES hOW TO STORE

    E-Print Network [OSTI]

    produce. Wash broccoli using cool running water. Do not use soap or detergent. Use a separate cutting cup low-sodium chicken broth WO1047 #12;how to prepare 2 cups nonfat milk 2 tablespoons cornstarch are tender. Mix milk, cornstarch, salt, pepper and thyme. Add mixture to vegetables, continue to cook

  1. Towards a Taxonomy for Web Observatories Web Science Institute

    E-Print Network [OSTI]

    Towards a Taxonomy for Web Observatories Ian Brown Web Science Institute University of Southampton University of Southampton Southampton, SO17 1BJ, UK +44 (0)23 8059 5000 wh@soton.ac.uk Lisa Harris Web.j.harris@soton.ac.uk ABSTRACT In this paper, we propose an initial structure to support a taxonomy for Web Observatories (WO

  2. Generation and growth rates of nonlinear distortions in a traveling wave tube John G. Wohlbier, Ian Dobson, and John H. Booske

    E-Print Network [OSTI]

    Dobson, Ian

    Generation and growth rates of nonlinear distortions in a traveling wave tube John G. Wo the generation of intermodulation frequencies and calculate their growth rates. The model describes the evolution rates is derived and compared to simulation results. DOI: 10.1103/PhysRevE.66.056504 PACS number s : 52

  3. OFC Review 2013 Software Defined Network (SDN)

    E-Print Network [OSTI]

    California at Davis, University of

    and transmission rate w/o hardware change Dedicated PCE to scale OpenFlow architectutre #12;Network ArchitectureOFC Review 2013 Software Defined Network (SDN) M. Farhan Habib May 10, 2013 Friday Group Meeting Networks Lab @ UCD #12;NTu3F: SDN in Today's Network #12;SDN: What and Why · Traditional distributed

  4. 5,688 people like Wiwo Green. Facebook social plugin

    E-Print Network [OSTI]

    Chiao, Jung-Chih

    :30 Kleiner als ein Floh: Forscher bauen Mini- Windrad Copyright: UT Arlington Windräder sind ein wichtiger amerikanischen University of Texas Arlington haben jetzt ein Windrad hergestellt, das aufgrund seiner Größe alle Werbepartner Page 1 of 4Kleiner als ein Floh: Forscher bauen Mini-Windrad - WiWo Green 2/1/2014http://green

  5. LERU Roadmap foR REsEaRch data

    E-Print Network [OSTI]

    Zürich, Universität

    LERU Roadmap foR REsEaRch data LERU REsEaRch data WoRking gRoUp University of Amsterdam, Responsibilities and Skills 28 7 Recommendations 31 #12;3 INTRODUCTION The LERU Roadmap for Research Data that LERU members need to act. In 2011, the LERU community of Chief Information Officers produced a Roadmap

  6. New Technique for the Measurement of the Scintillation Efficiency of Nuclear Recoils

    E-Print Network [OSTI]

    Jelena Ninkovic; Peter Christ; Godehard Angloher; Dieter Hauff; Partick Huff; Emilija Pantic; Federica Petricca; Franz Proebst; Wolfgang Seidel

    2006-04-05T23:59:59.000Z

    We present a new technique developed for the measurement of the scintillation efficiency of nuclear recoils in solid scintillators. Using this technique we measured the quenching of the scintillation efficiency for the various recoiling nuclei in CaWO4 crystals which are used in direct Dark Matter searches.

  7. .-4 Ijcie;we _SOi-ViCq h t U t . 9 Released upon receipt

    E-Print Network [OSTI]

    WINDS-- me task of docking o r undocking an airship--- the operations of putting the vessel into her' and they are found to be vary complox. logical officer of the U.S. naval airship %os Angel.ss, Liout. h m c i s WO

  8. The School of Music of the College of Arts and Sciences

    E-Print Network [OSTI]

    Grissino-Mayer, Henri D.

    No. 3 in C Major, WoO 36 Ludwig van Beethoven Allegro vivace (1770-1827) Adagio con espressione Rondo--Allegro Allegro (1833-1897) Intermezzo--Allegro ma non troppo Andante con moto Rondo alla Zingarese #12;PR EVIEW

  9. FOOD PRESERVATION SERIES RECOMMENDED VARIETIES

    E-Print Network [OSTI]

    that are not bruised or damaged. Bag fresh fruits separate from meat, poultry and seafood products. Wash hands before a separate cutting board for fruits, and keep away from raw meat, poultry and seafood Follow standardized. WO1043 #12;how to preserve FREEZING OF PEARS Select pears that are well ripened and firm

  10. Selective catalytic reduction (SCR) of nitric oxide (NO) with ammonia over vanadia-based and pillared interlayer clay-based catalysts 

    E-Print Network [OSTI]

    Oh, Hyuk Jin

    2004-09-30T23:59:59.000Z

    The selective catalytic reduction (SCR) of nitric oxide (NO) with ammonia over vanadia-based (V2O5-WO3/TiO2) and pillared interlayer clay-based (V2O5/Ti-PILC) monolithic honeycomb catalysts using a laboratory laminar-flow ...

  11. Activation Energy of Tantalum-Tungsten Oxide Thermite Reaction

    SciTech Connect (OSTI)

    Cervantes, O; Kuntz, J; Gash, A; Munir, Z

    2010-02-25T23:59:59.000Z

    The activation energy of a high melting temperature sol-gel (SG) derived tantalum-tungsten oxide thermite composite was determined using the Kissinger isoconversion method. The SG derived powder was consolidated using the High Pressure Spark Plasma Sintering (HPSPS) technique to 300 and 400 C to produce pellets with dimensions of 5 mm diameter by 1.5 mm height. A custom built ignition setup was developed to measure ignition temperatures at high heating rates (500-2000 C {center_dot} min{sup -1}). Such heating rates were required in order to ignite the thermite composite. Unlike the 400 C samples, results show that the samples consolidated to 300 C undergo an abrupt change in temperature response prior to ignition. This change in temperature response has been attributed to the crystallization of the amorphous WO{sub 3} in the SG derived Ta-WO{sub 3} thermite composite and not to a pre-ignition reaction between the constituents. Ignition temperatures for the Ta-WO{sub 3} thermite ranged from approximately 465-670 C. The activation energy of the SG derived Ta-WO{sup 3} thermite composite consolidated to 300 and 400 C were determined to be 37.787 {+-} 1.58 kJ {center_dot} mol{sup -1} and 57.381 {+-} 2.26 kJ {center_dot} mol{sup -1}, respectively.

  12. Exact three-dimensional spectral solution to surface-groundwater interactions with arbitrary surface topography

    E-Print Network [OSTI]

    surface topography Anders Wo¨rman,1 Aaron I. Packman,2 Lars Marklund,1 Judson W. Harvey,3 and Susa H. [1] It has been long known that land surface topography governs both groundwater flow patterns that the surface topography can be separated in a Fourier-series spectrum that provides an exact solution

  13. JULY 2009 | VOL. 52 | NO. 7 | communications of the acm 97 In apprenticeship learning, we assume that an expert is

    E-Print Network [OSTI]

    Ng, Andrew Y.

    platform and presents our experimental results. 2. ReLateD WoRK Although no prior works span our entire. Helicopters are widely regarded to be significantly harder to control than fixed-wing aircraft. (See, e and important test bed for learning and control algorithms. There is a considerable body of research concerning

  14. 1 Introduction chou,gaetano @cs.washington.edu

    E-Print Network [OSTI]

    Chou, Pai H.

    platform and presents our experimental results. 2. ReLateD WoRK Although no prior works span our entire. Helicopters are widely regarded to be significantly harder to control than fixed-wing aircraft. (See, e and important test bed for learning and control algorithms. There is a considerable body of research concerning

  15. The importance of phase in speech enhancement Kuldip Paliwal, Kamil Wojcicki

    E-Print Network [OSTI]

    The importance of phase in speech enhancement Kuldip Paliwal, Kamil Wo´jcicki , Benjamin Shannon 1 Available online 24 December 2010 Abstract Typical speech enhancement methods, based on the short in the enhancement process the quality of the resulting speech can be improved. For this we use analysis windows

  16. Squeezing particle-stabilized emulsions into biliquid foams equation of state

    E-Print Network [OSTI]

    Schofield, Andrew

    porous materials,14 and for shelf life.20 Here, we measure the equation of state of water-in-oil (w/o) PR emulsions via centrifugal compression and we interpret our results using a quantitative model adapted fromSqueezing particle-stabilized emulsions into biliquid foams ­ equation of state Louison Maurice

  17. PATENTES INTERNACIONAIS RECENTES ORDONEZ, Juan Carlos ; Ruiz, C. O. ; SOUZA, Jeferson vila ; Vargas, Jos

    E-Print Network [OSTI]

    Paraná, Universidade Federal do

    ;WO2012050608-A1 - Photo-bioreactor for growing algae e.g. microalgae within nutrient medium, comprises support frame, horizontal bioreactor tubes, gassing/degassing housings, pH sensor, temperature sensor, and pump for circulating nutrient medium. 2012, Estados Unidos. Patente: Privilégio de Inovação

  18. Reinforcement Learning in the brain Reading: Y Niv, Reinforcement learning in the brain, 2009.

    E-Print Network [OSTI]

    Seriès, Peggy

    basic types of animal conditioning animal learning) ow do these relate to RL? 20 Monday, 8 March 2010Reinforcement Learning in the brain · Reading: Y Niv, Reinforcement learning in the brain, 2009. wo Reinforcement learning and the brain: the problems we face all day · Decision making at all levels

  19. The Nature of Oxide Films on Tungsten in Acidic and Alkaline Solutions

    E-Print Network [OSTI]

    by the mass transport of a loosely bound WO3(H2O)x layer from the surface. Electrochemical impedance spectroscopy measurements found that W dissolution in acidic solution was associated with an adsorption, structure, and hydration as a function of solution pH and applied potential in situ, surface enhanced Raman

  20. SHORT REVIEW Butterfly genomics eclosing

    E-Print Network [OSTI]

    Beldade, Patrícia

    SHORT REVIEW Butterfly genomics eclosing P Beldade1 , WO McMillan2 and A Papanicolaou3 1 Section to an explosion of genomic data and the emergence of new research avenues. Evolutionary and ecological functional genomics, with its focus on the genes that affect ecological success and adaptation in natural populations

  1. Thin Solid Films 434 (2003) 5561 0040-6090/03/$ -see front matter 2003 Elsevier Science B.V. All rights reserved.

    E-Print Network [OSTI]

    Cao, Guozhong

    2003-01-01T23:59:59.000Z

    with excellent intrinsic photoluminescent properties. It is highly resistant to gamma radiation, has an almost formation of either tungsten oxide or cadmium oxide. Scanning electron microscopy analysis shows-crystal CdWO in4 fabricating micro- and nano-scale devices such as micro-electro-mechanical systems

  2. Engineering&Science MARCH-APRIL 1978

    E-Print Network [OSTI]

    Faraon, Andrei

    who believe in solar energy production. So it is #12;PLANT ENERGY COST YEAR 2WO PLANT STARTUP T 4 ENERGY COST, millsikwe hr I BASELOAD PLANTS STORAGE B A E R y I COAL NUCLEAR GROUND GROUND SOLAR PHOTOEngineering&Science MARCH-APRIL 1978 Solar Energy: True God or False Prophet? by BRUCE MURRAY 3olar

  3. Courses: Nursing (NURS) Page 357Sonoma State University 2014-2015 Catalog Nursing (NURS)

    E-Print Network [OSTI]

    Ravikumar, B.

    care system reform including nursing's expanded professional role in promoting health and mitigating, and Nursing majors only. nurS 303 MAternity & WoMen'S HeALtH CAre (6) Seminar, 4 hours; practicum, 2 hours to the principles of mental health and illness. Nursing care therapeutics with populations experienc- ing mental

  4. 1 / 2 0 0 7 M A X P L A N C K F O R S C H U N G 81 MEHR RECHENPOWER BEI DER GWDG UND IM RECHENZENTRUM GARCHING

    E-Print Network [OSTI]

    RECHENZENTRUM GARCHING Computer für komplexe Simulationen Sowohl das Rechenzentrum Garching als auch die Rechenzentrum Garching installiert die Max-Planck-Gesellschaft einen IBM-Supercomputer, der die Leistung des Garching, wo sich die neue Anlage befinden wird. Das Rechenzentrum Gar- ching ist das gemeinsame

  5. Z .Thin Solid Films 392 2001 231 235 Atmospheric pressure chemical vapor deposition of

    E-Print Network [OSTI]

    of electrochromic tungsten oxide films Roy G. Gordona,U , Sean Barryb , Jeffrey T. Bartona , Randy N.R. Broomhall oxide, WO , is a coloring layer commonly used in electrochromic windows and displays. Successful: Chemical vapor deposition; Tungsten; Oxides; Electrochromism 1. Introduction Tungsten oxide is a key

  6. The ProM framework: A new era in process mining tool support

    E-Print Network [OSTI]

    van der Aalst, Wil

    Intelligence" (BPI) both aca- demic (e.g., EMiT, Little Thumb, InWoLvE, Process Miner, and Min. The goal of process mining is to extract information about processes from transaction logs. It assumesThe ProM framework: A new era in process mining tool support B.F. van Dongen, A.K.A. de Medeiros, H

  7. A Meta Model for Process Mining Data B.F. van Dongen and W.M.P. van der Aalst

    E-Print Network [OSTI]

    van der Aalst, Wil

    for very different purposes. The term process mining refers to the techniques and tools to extract) and "Business Process Intelligence" (BPI) both academic (e.g., EMiT, Little Thumb, InWoLvE, Process Miner page for a more complete overview. The goal of process mining is to extract information about processes

  8. Single-Crystal Tungsten Oxide Nanosheets: Photochemical Water Oxidation in the Quantum Confinement Regime

    E-Print Network [OSTI]

    Osterloh, Frank

    Single-Crystal Tungsten Oxide Nanosheets: Photochemical Water Oxidation in the Quantum Confinement, catalysis, WO3, tungsten oxide, nanosheet, nanocrystal, quantum confinement, solar energy conversion INTRODUCTION Tungsten trioxide crystallizes in the ReO3 structure type and is an n-type semiconductor with a 2

  9. Study on the oxidation and reduction of tungsten surface for sub-50 nm patterning process

    SciTech Connect (OSTI)

    Kim, Jong Kyu; Nam, Seok Woo; Cho, Sung Il; Jhon, Myung S.; Min, Kyung Suk; Kim, Chan Kyu; Jung, Ho Bum; Yeom, Geun Young [Memory Division Semiconductor Business, Samsung Electronics, San No. 16 Banwol-Ri, Taean-Eup, Hwasung-City, Gyeonggi-Do 449-711, South Korea and Department of Advanced Materials Science and Engineering, Sungkyunkwan University, Suwon, Gyeonggi-do 440-746 (Korea, Republic of); Memory Division Semiconductor Business, Samsung Electronics, San No. 16 Banwol-Ri, Taean-Eup, Hwasung-City, Gyeonggi-Do 449-711 (Korea, Republic of); Department of Chemical Engineering and Data Storage Systems Center, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213 (United States); Department of Advanced Materials Science and Engineering, Sungkyunkwan University, Suwon, Gyeonggi-do 440-746 (Korea, Republic of)

    2012-11-15T23:59:59.000Z

    The oxidation characteristics of tungsten line pattern during the carbon-based mask-layer removal process using oxygen plasmas have been investigated for sub-50 nm patterning processes, in addition to the reduction characteristics of the WO{sub x} layer formed on the tungsten line surface using hydrogen plasmas. The surface oxidation of tungsten lines during the mask layer removal process could be minimized by using low-temperature (300 K) plasma processing for the removal of the carbon-based material. Using this technique, the thickness of WO{sub x} on the tungsten line could be decreased to 25% compared to results from high-temperature processing. The WO{sub x} layer could also be completely removed at a low temperature of 300 K using a hydrogen plasma by supplying bias power to the tungsten substrate to provide a activation energy for the reduction. When this oxidation and reduction technique was applied to actual 40-nm-CD device processing, the complete removal of WO{sub x} formed on the sidewall of tungsten line could be observed.

  10. Fabrication of functional nanomaterials using flame assisted spray pyrolysis

    SciTech Connect (OSTI)

    Purwanto, Agus, E-mail: aguspur@uns.ac.id [Chemical Engineering Department, Faculty of Engineering, Sebelas Maret University, Surakarta 632112 (Indonesia)

    2014-02-24T23:59:59.000Z

    Flame assisted spray pyrolysis (FASP) is a class of synthesis method for nanomaterials fabrication. The ability to control nanomaterials characteristics and easy to be-scaled up are the main features of FASP. The crystallinity and particles size of the prepared nanomaterials can be easily controlled by variation of fuel flow rate. The precursor concentration, carrier gas flow rate, and carrier gas can be also used to control the prepared nanomaterials. Energy related nanomaterials preparation uses as the example case in FASP application. These material are yttrium aluminum garnet (YAG:Ce) and tungsten oxide (WO{sub 3}). It needs strategies to produce these materials into nano-sized order. YAG:Ce nanoparticles only can be synthesized by FASP using the urea addition. The decomposition of urea under high temperature of flame promotes the breakage of YAG:Ce particles into nanoparticles. In the preparation of WO{sub 3}, the high temperature flame can be used to gasify WO{sub 3} solid material. As a result, WO{sub 3} nanoparticles can be prepared easily. Generally, to produce nanoparticles via FASP method, the boiling point of the material is important to determine the strategy which will be used.

  11. BLACK FRANCOPHONE LITERATURE VIDEOS Page 1 of 3 Last Updated 07/09/02

    E-Print Network [OSTI]

    Baskaran, Mark

    min.) BFL/5 - REPUBLIC OF CHAD (B/W) (English) (20 min.) BFL/6 - AFRICA: HISTORICAL HERITAGE of early Afric also emphasizes the rich cultural heritage of Afro-americans (color) (English) (9 min.) BFL - AFRICAN CONTINENT: AN INTRODUCTION This geographical, historical and cultural overview of the wo second

  12. Solid State Chemistry 1982, Proceedings of the Second European Conference, Veldhoven, The Netherlands, 7-9 June 1982, R. Mets&vu, H.J.M. Heijligers and

    E-Print Network [OSTI]

    Vertes, Akos

    in WO3 thin layers was measured optically using a 1 pm resolution power micro- densitometer of a microdensitometer. The analysing light was kept as low as possible to avoid photochromatic effect and thermal decom. This inadequancy could not be remedied even by assuming that the proportion of the two types of channel depended

  13. Diamond Detectors for Accurate Compton Polarimetry

    E-Print Network [OSTI]

    Martin, Jeff

    'd Operable for a variety of beam energies from 1.165 GeV ­ 11.0 GeV chicane must fit in Hall C Most design by UVa+JLab group #12; Photon Detector options 3x3 array of PbWO4 Monolithic CsI (undoped) Detectors

  14. Experimental research of double beta decay of atomic nuclei

    E-Print Network [OSTI]

    F. A. Danevich

    2011-12-26T23:59:59.000Z

    Results of several double beta decay experiments, performed with the help of low background crystal scintillators, are presented. In particular, the half-life value of the two-neutrino double beta decay of 116-Cd has been measured as 2.9 10^{19} yr, and the new half-life limit on the neutrinoless double beta decay of 116-Cd has been established as >1.7 10^{23} yr at 90%, which corresponds to a restriction on the neutrino mass neutrinoless double beta decay of 76-Ge [Mod. Phys. Lett. A 16 (2001) 2409] was analyzed. The demands of the future high sensitivity double beta decay experiments, aiming to observe the neutrinoless double beta decay or to advance restrictions on the neutrino mass to < 0.01 eV, were considered. Requirements for their sensitivity and discovery potential were formulated. Two projects of double beta experiments with a sensitivity on the level of 10^{26}-10^{27} yr (CAMEO and CARVEL projects) were discussed. Scintillation properties and radioactive contamination of CaWO4, ZnWO4, CdWO4, PbWO4, GSO(Ce), CeF3, yttrium-aluminum garnet doped with neodymium (YAG:Nd) crystal scintillators were studied. Applicability of these scintillators to search for double beta decay was discussed.

  15. 24 OCTOBER 2008 VOL 322 SCIENCE www.sciencemag.org540 PERSPECTIVES

    E-Print Network [OSTI]

    Falkowski, Paul G.

    24 OCTOBER 2008 VOL 322 SCIENCE www.sciencemag.org540 PERSPECTIVES Digital microfluidics can also (2008). 10.1126/science.1165719 T wo gases overwhelmingly dominate Earth's atmosphere: N2 and O2 is virtually inert and has an atmosphe

  16. Farming Captive Cervids in Michigan

    E-Print Network [OSTI]

    Farming Captive Cervids in Michigan: A Review of Social, Economic, Ecological and Agricultural Opportunities and Risks Information current as of 2001 s Research Report WO1026 Michigan Agricultural Experiment Station Michigan State University R E S E A R C H R E P O R T #12;2 Farming Captive Cervids in Michigan

  17. Exploring Interruption in HRI using Wizard of Oz Paul Saulnier, Ehud Sharlin, Saul Greenberg

    E-Print Network [OSTI]

    Greenberg, Saul

    experiments and should call for future research of interruption in human-robot interaction. II. DESCRIPTION of Oz (WoO) should interrupt humans in various social settings. While there is considerable work social HRI experiments as well as reflections on our future interruption HRI research Keywords

  18. Verh.Internat.Verein.Limnol 26 2385-2390 Stuttgart,Juni 1998 A new high-resolution method of measuring PAR profiles in

    E-Print Network [OSTI]

    Livingstone, David M.

    of tWo main processes:the vertical mo- tion of the algal cells through regions of different light intensity, and the modulation of incoming solar radiation within the atmosphere (e.g. by clouds), at the air, calibration and validation of dy- namic photosynthesis models. This paper describes a newly developed in situ

  19. Albritton Bell Tower - 39 

    E-Print Network [OSTI]

    Unknown

    2006-01-01T23:59:59.000Z

    The selective catalytic reduction (SCR) of nitric oxide (NO) with ammonia over vanadia-based (V2O5-WO3/TiO2) and pillared interlayer clay-based (V2O5/Ti-PILC) monolithic honeycomb catalysts using a laboratory laminar-flow reactor was investigated...

  20. Neutron Scattering Facility for Characterization of CRESST and EURECA Detectors at mK Temperatures

    E-Print Network [OSTI]

    J. -C. Lanfranchi; C. Ciemniak; C. Coppi; F. von Feilitzsch; A. Gütlein; H. Hagn; C. Isaila; J. Jochum; M. Kimmerle; S. Pfister; W. Potzel; W. Rau; S. Roth; K. Rottler; C. Sailer; S. Scholl; I. Usherov; W. Westphal

    2008-10-01T23:59:59.000Z

    CRESST (Cryogenic Rare Event Search with Superconducting Thermometers) is an experiment located at the Gran Sasso underground laboratory and aimed at the direct detection of dark matter in the form of WIMPs. The setup has just completed a one year commissioning run in 2007 and is presently starting a physics run with an increased target mass. Scintillating $\\mathrm{CaWO_4}$ single crystals, operated at temperatures of a few millikelvin, are used as target to detect the tiny nuclear recoil induced by a WIMP. The powerful background identification and rejection of $\\alpha$, e$^{-}$ and $\\gamma$ events is realized via the simultaneous measurement of a phonon and a scintillation signal generated in the $\\mathrm{CaWO_4}$ crystal. However, neutrons could still be misidentified as a WIMP signature. Therefore, a detailed understanding of the individual recoil behaviour in terms of phonon generation and scintillation light emission due to scattering on Ca, O or W nuclei, respectively, is mandatory. The only setup which allows to perform such measurements at the operating temperature of the CRESST detectors has been installed at the Maier-Leibnitz-Accelerator Laboratory in Garching and is presently being commissioned. The design of this neutron scattering facility is such that it can also be used for other target materials, e.g. $\\mathrm{ZnWO_4}$, $\\mathrm{PbWO_4}$ and others as foreseen in the framework of the future multitarget tonne-scale experiment EURECA (European Underground Rare Event Calorimeter Array).

  1. Page 1 | B.A. in Software and Information Systems | Academic Plan of Study Updated May 2014 B.A. in Software and Information Systems

    E-Print Network [OSTI]

    Raja, Anita

    at least 2.5, accumulation of at least 12 credit hours at UNC Charlotte, completion of ITIS 1212/L or ITCS): Advising holds in effect each semester. Advising required each semester. Assigned advisors available Education W/O Course Notes Fall Semester ITIS 1600 Computing Professionals 1 ITCS 1212+L Introduction

  2. Applied Catalysis B: Environmental 37 (2002) 2735 NOx reduction by urea under lean conditions over

    E-Print Network [OSTI]

    Gulari, Erdogan

    2002-01-01T23:59:59.000Z

    - tem, consisting of V2O5/TiO2/WO3 and an oxidizing catalyst, enabled the efficient use of the eutectic­gel preparation; Urea 1. Introduction Transition metals, such as Pt or Ag, on alumina were found to be active

  3. pubs.acs.org/ICPublished on Web 07/02/2009r 2009 American Chemical Society Inorg. Chem. 2009, 48, 72697279 7269

    E-Print Network [OSTI]

    Lawson, Catherine L.

    of semiconductors like TiO2 and WO3 as photocatalysts. These include wide bandgaps (3 eV), mismatches at 1.00 V (vs Ag/AgCl) under illumination by UV-visible light when suspended in a proton

  4. Tuning the Bias Sensing Layer: A New Way to Greatly Improve Metal-Oxide Gas Sensors Selectivity

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    layer of resistive Metal-Oxide (MOX) sensors toward gases have been investigated. The behavior of a WO3 is kept constant, it has been found that tuning the polarization of the MOX layer induces changes on its the selectivity of MOX sensors. Keywords : Gas Sensor, Metal Oxide, Temperature-modulated, Bias-modulated I

  5. Egyptian Journal of Natural History, 2007, Vol. 4 , pp 1 -9 Printed in Egypt. Egyptian British Biological Society (EBB Soc)

    E-Print Network [OSTI]

    Nottingham, University of

    Egyptian Journal of Natural History, 2007, Vol. 4 , pp 1 - 9 © Printed in Egypt. Egyptian British. Ampulicidae, Sphecidae & Crabronidae) of Egypt. Part 2: Checklist C. Giles Roche Lot 44, Taman Wong Wo Lo not been recorded from Egypt hitherto (Spilomena, Crossocerus, Lestica). Twenty-four species are recorded

  6. The Phonology and Morphosyntax of Kol

    E-Print Network [OSTI]

    Henson, Bonnie

    2007-01-01T23:59:59.000Z

    bweg (Alt. v. b e w e t. of bwe n. 5 / 6 . lo g . v. ta k ewithout permission. kukuma se bwe ko. kukuma se bw e ko ch3rd person (1 /2 ) J™ bwo S& bwe wo myo we mye dwo mwd dwe

  7. Suchen in Texten Naives Suchen

    E-Print Network [OSTI]

    Bremen, Universität

    = wj und c = wk f¨ur j BoyerSuchen in Texten Naives Suchen Verfahren von Knuth-Morris-Pratt Verfahren von Boyer (Alphabet) . F¨ur einen Text T n und ein Wort w m mit n >> m stellt sich die Frage: Wie oft / Wo kommt

  8. I,

    Office of Legacy Management (LM)

    cy. IA) 2A, 3A - 8. H. Brown (want. cy. :?A,sA) P. Mb. Balrrara (w'eac. cy. 4A) R. J. Smith, Jr. (w&o. cy. 5A) 4A- 6A - 6A - 7A - SA- SA - 1oA - 6. R. Gtistavson (+nc. cy; bA)-...

  9. In the Shadow of the Cell-Phone

    E-Print Network [OSTI]

    Hansen, Lone Koefoed

    2009-01-01T23:59:59.000Z

    K. Tracking himself, so the FBI won't have to. NJ.com, Newtracking_himself_so_t he_fbi_wo.html> Accessed 8 July 2009 [he was held back by the FBI in 2003 on suspicion of being a

  10. r XXXX American Chemical Society 929 dx.doi.org/10.1021/cs2001434 |ACS Catal. 2011, 1, 929936 RESEARCH ARTICLE

    E-Print Network [OSTI]

    Southern California, University of

    semiconducting photocata- lytic powders, including TiO2, ZnO, CdS, GaP, SiC, and WO3.1 In addition, Halmann photocell2 and oxide semiconductors in a photoche- mical solar collector.3 Hemminger and co fraction of solar photons (4%) can be used to drive this photocatalyst. The resulting low photocatalytic

  11. DIE GUSTAF-DALMAN-SAMMLUNG Pflanzen in Palstina

    E-Print Network [OSTI]

    Greifswald, Ernst-Moritz-Arndt-Universität

    Gilead, wo am wadi es-selihi mattblauer Reiherschnabel und purpurblaue Salbei mit violetten Blättchen an den Enden der Stengel, und am wadi er-rumemin die himmel- blaue Anchuchsa, die lilafarbene Rauke und ein Herbarbeleg, den Dalman auf einer Expedition von Jerusalem zum See Tiberias am wadi er

  12. Device Selection by a Personal Proxy Agent

    E-Print Network [OSTI]

    von Bochmann, Gregor

    Device Selection by a Personal Proxy Agent N. Hadibi, K. El-khatib, Eric Z. Zhang, Ken Chan, G. v user to access communication devices currently present in his Personal Area Network (PAN) Performs PreferencesDevice Capability An example Scenario: Connecting Alice and Bob w/o a Personal Proxy Internet Home

  13. Studies of epithermal neutrons in uranium, heavy water lattices

    E-Print Network [OSTI]

    D'Ardenne, Walter Herbert

    1964-01-01T23:59:59.000Z

    Measurements related to reactor physics parameters were made in three heavy water lattices. The three lattices studied consisted of 0.250-inch-diameter, 1.03 w/o U2 3 5 uranium fuel rods arranged in triangular arrays and ...

  14. Observations of short-circuiting flow paths within a free-surface wetland in Augusta, Georgia, U.S.A.

    E-Print Network [OSTI]

    Licciardi, Joseph M.

    constructed treatment wetland in Augusta, Georgia were used to quantify the size, distribution, velocity). In treatment wetlands, such heterogeneity nearly always results in reduced contaminant removal (WoObservations of short-circuiting flow paths within a free-surface wetland in Augusta, Georgia, U

  15. Assessment of U.S. Cap-and-Trade Proposals MIT Joint Program on the Science and Policy of Global Change Report 160

    E-Print Network [OSTI]

    .9 68.8 73.6 78.5 Including Shale Oil 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 9.7 19.6 Natural Gas 22.5 24.7 26 indicators) Bio Liquids Production in US (EJ) 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Net Bio Liquids Imports.7 13.4 15.2 17.0 18.5 Oil w/o CCS 0.3 0.3 0.3 0.3 0.4 0.4 0.4 0.5 0.5 0.6 Gas w/o CCS 2.1 2.5 3.1 3.9 3

  16. OTA based active filter design

    E-Print Network [OSTI]

    Ferrell, John Steven

    1983-01-01T23:59:59.000Z

    I gmZ IC3 ) gmlgmZ ~CZ+C C I (4. aS) comparing (4. 44) and (4. 45), it is seen that gm CZ+C3 ( 4. 46) gm1g!l!2 b ~cr+c& c& gtl!1 gm2 C C1C3 (4. 48) Since C is r. he numerator. wo and b is the denominator wo anti since both b and c...) . bince t'&Ie i no& t to pm3 ''s to tl e pcs iti ve ter i)inal nf &hc CT&& the :leno&nina& or term consists of tlie sun) ot gm an ' gi3. 1'hc &. xpected !1 of th ) s !ov pass expe&'i I&PI) tal cl &'oui't 1 s l/2 since g&tl =amg=&lr&'l. Cr iphic?!ly &t...

  17. Transporting of a Cell-Sized Phospholipid Vesicle Across Water/Oil Interface

    E-Print Network [OSTI]

    Hase, M; Hamada, T; Yoshikawa, K; Hase, Masahiko; Yamada, Ayako; Hamada, Tsutomu; Yoshikawa, Kenichi

    2006-01-01T23:59:59.000Z

    When a cell-sized water droplet, with a diameter of several tens of micro meter, is placed in oil containing phospholipids, a stable cell-sized vesicle is spontaneously formed as a water-in-oil phospholipid emulsion (W/O CE) with a phospholipid monolayer. We transferred the lipid vesicle thus formed in the oil phase to the water phase across the water/oil interface by micromanipulation, which suggests that the vesicle is transformed from a phospholipid monolayer as W/O CE into a bilayer. The lipid vesicle can then be transported back into the oil phase. This novel experimental procedure may be a useful tool for creating a model cellular system, which, together with a microreactor, is applicable as a micrometer-scale biochemical reaction field.

  18. Time-resolved studies on the dynamics of photoinduced formation of M(CO)/sub 4/(polypyridyl) (M = Mo, Cr, and W) complexes

    SciTech Connect (OSTI)

    Kalyanasundaram, K.

    1988-04-21T23:59:59.000Z

    The dynamics of photoinduced formation of M(CO)/sub 4/(LL) (M = Mo(O), Cr(O), and W(O) and LL = various polypyridyl ligands such as 5-chloro-1, 10-phen, 1,10-phen, 2,2'-bpy, and 4,4'-Me/sub 2/-2,2'-bpy) from M(CO)/sub 6/ and LL in benzene has been examined via pulsed laser photolysis techniques. The formation of the polypyridyl tetracarbonyl complex occurs in several steps, extending over a wide range of time scales (from a few nanoseconds to several milliseconds). Spectral evidence is presented for the formation of a pentacarbonyl monodentate polypyridine intermediate. The rate of formation of the complexes follows the order Mo(O) > Cr(O) > W(O). For a given metal carbonyl, the reactivity of various ligands follows the order 5-Clphen greater than or equal to phen > bpy greater than or equal to Me/sub 2/bpy.

  19. Oxygen plasma immersion ion implantation treatment to enhance data retention of tungsten nanocrystal nonvolatile memory

    SciTech Connect (OSTI)

    Wang, Jer-Chyi, E-mail: jcwang@mail.cgu.edu.tw; Chang, Wei-Cheng; Lai, Chao-Sung, E-mail: cslai@mail.cgu.edu.tw [Department of Electronic Engineering, Chang Gung University, Kweishan 333, Taoyuan, Taiwan (China); Chang, Li-Chun [Department of Material Engineering and Center for Thin Film Technologies and Applications, Ming Chi University of Technology, Taishan 24301, New Taipei City, Taiwan (China); Ai, Chi-Fong; Tsai, Wen-Fa [Institute of Nuclear Energy Research, Atomic Energy Council, Longtan 325, Taoyuan, Taiwan (China)

    2014-03-15T23:59:59.000Z

    Data retention characteristics of tungsten nanocrystal (W-NC) memory devices using an oxygen plasma immersion ion implantation (PIII) treatment are investigated. With an increase of oxygen PIII bias voltage and treatment time, the capacitance–voltage hysteresis memory window is increased but the data retention characteristics become degraded. High-resolution transmission electron microscopy images show that this poor data retention is a result of plasma damage on the tunneling oxide layer, which can be prevented by lowering the bias voltage to 7?kV. In addition, by using the elevated temperature retention measurement technique, the effective charge trapping level of the WO{sub 3} film surrounding the W-NCs can be extracted. This measurement reveals that a higher oxygen PIII bias voltage and treatment time induces more shallow traps within the WO{sub 3} film, degrading the retention behavior of the W-NC memory.

  20. A multicomponent smoking cessation program for couples

    E-Print Network [OSTI]

    Nottingham, Carolyn Robin

    1987-01-01T23:59:59.000Z

    A NULTICONPONENT SNOKING CESSATION PROGRAN FOR COUPLES A Thesis by CAROLYN ROBIN NOTTINGHAN Submitted to the Graduate College of Texas AAN University in partial fulfillment of the requirements for the degree of NASTER OF SCIENCE December... 1987 Najor Subject: Psychology A NULTICONPONENT SNOKING CESSATION PROGRAN FOR COUPLES A Thesis CARO(. YN ROBIN NOTTINGHAN Approved as to style and content by: fe Kern ( ir of Cinittee) Wendy Wo (Memb Ar ()r R e Steve Wore l (Head...

  1. Evaluation of the environmental influence on the improvement of two populations of maize (Zea mays L.) through mass selection

    E-Print Network [OSTI]

    Adal, Nagy Abou

    1982-01-01T23:59:59.000Z

    emphasis on *wo characters: resistance to the downey mildew and adaptation to the harsh local climatic conditions, especially drought. The experiment to evaluate the composites was con- ducted during the summer of 1981 on the university farm near...) and its correlation with the 17 evaporation as computed by Penman's formula (6, 77). They reached the conclusion that if the standardization of' the pan environment is carefully maintained (25) and if' strong, dry winds are not frequent (47), the use...

  2. The World of Dark Shadows Issue 6

    E-Print Network [OSTI]

    Multiple Contributors

    1976-01-01T23:59:59.000Z

    &'1.\\;;11.ou nOvl a"vout ·the eAasperation$ of' the day, and. engaged in friendly 2,0i:1Sip \\vi'th i'Iary Be~ton, \\vho worked at COllinwood. ;'iL:l.'Y Banton WoS!S c.\\ vdgualy pretty woman, with a tired tir. Shl.:3 ~1&C. boenin Co lli:ls,!?ort running...

  3. hal-00276736,version1-1May2008 Compressible Fluids

    E-Print Network [OSTI]

    Boyer, Edmond

    is represented by a continuous mapping of a reference three-dimensional space Do in the physical space Dt, z = (Z) where Wo is a four-dimensional reference space and W the physical time-space, z = t x of t: dx = vdt + FdX. 2 #12;2 Exterior derivative The covector C = vT has an inverse image Co in Do

  4. Aspects of structural and electronic disorder in network materials: approaches to simulation

    E-Print Network [OSTI]

    Walkingshaw, Andrew D

    2007-03-06T23:59:59.000Z

    -mechanical methods. I also introduce some recent developments in computer science and software engineering which have begun to be taken up in scientific circles. In Chapter 3, I present a study of charge doping in the electrochromic defect per- ovskite WO3. By using... is devoted to the prediction of diffusion behaviour in network minerals. A modified, improved derivative of one of the oldest transition- state search methods, the Intrinsic Reaction Coordinate method, is presented; we derive the fundamental mathematical...

  5. The effects of silicon doping on the performance of PMAN carbon anodes in Li-ion cells

    SciTech Connect (OSTI)

    Guidotti, R.A.; Johnson, B.J. [Sandia National Labs., Albuquerque, NM (United States); Even, W. Jr. [Sandia National Labs., Livermore, CA (United States)

    1996-05-01T23:59:59.000Z

    Carbons derived from polymethylacrylonitrile (PMAN) have been studied for use as intercalation anodes in Li-ion cells. The effect of Si doping upon the electrochemical performance of PMAN carbons was studied using tetravinylsilane (TVS) and tetramethysilane (TMS) as sources of Si during the formation of the PMAN precursors. The carbons were characterized by galvanostatic cycling, cyclic voltammetry, and complex impedance. The presence of 9 to 11 w/o Si in the PMAN lattice greatly increased the irreversible capacity of these materials.

  6. Depth Profile Analysis of New Materials in Hollow Cathode Discharge

    SciTech Connect (OSTI)

    Djulgerova, R.; Mihailov, V.; Gencheva, V.; Popova, L.; Panchev, B. [Institute of Solid State Physics - Bulgarian Academy of Sciences, 1784 Sofia (Bulgaria); Michaylova, V. [Technical University of Sofia, 1797 Sofia (Bulgaria); Szytula, A.; Gondek, L.; Dohnalik, T.M. [Smoluchowski Institute of Physics - Jagellonian University, 30-059 Cracow (Poland); Petrovic, Z.Lj. [Institute of Physics, 11080 Zemun, Belgrade (Serbia and Montenegro)

    2004-12-01T23:59:59.000Z

    In this review the possibility of hollow cathode discharge for depth profile analysis is demonstrated for several new materials: planar optical waveguides fabricated by Ag+-Na+ ion exchange process in glasses, SnO2 thin films for gas sensors modified by hexamethildisilazane after rapid thermal annealing, W- and WC- CVD layers deposited on Co-metalloceramics and WO3- CVD thin films deposited on glass. The results are compared with different standard techniques.

  7. Mechanical front wheel drive tractors: a field performance study

    E-Print Network [OSTI]

    Babacz, William Adam

    1986-01-01T23:59:59.000Z

    . . . . . . . . . . . . . . . . . . . . . . . . . Comparison of 2WD and NFWD Tractors . . . . . . . . . . . . . . . . . . Comparison of NFWD Tractors Operating in FWA and 2WO Modes III TRACTOR PERFORNANCE NONITORING SYSTEM Instrumentation System Rear Axle Torque . Front Axle Driveline Torque Front...-sized tractors and may be operated with the mechanical front wheel drive engaged in a front wheel assist (FWA) mode or disengaged in a two-wheel drive (2WD) mode. The advertised benefits of NFWD are increased traction and reduced fuel consumption. Agricultural...

  8. Structure determination of {alpha}-La{sub 6}W{sub 2}O{sub 15}

    SciTech Connect (OSTI)

    Chambrier, M-H., E-mail: marie-helene.chambier.etu@univ-lemans.f [Laboratoire des Oxydes et Fluorures, UMR-CNRS 6010, Universite du Maine, 72085 Le Mans Cedex 9 (France); Ibberson, R.M. [ISIS Facility, STFC-Rutherford Appleton Laboratory, Harwell Science and Innovation Campus, Didcot OX11 0QX (United Kingdom); Goutenoire, F., E-mail: francois.goutenoire@univ-lemans.f [Laboratoire des Oxydes et Fluorures, UMR-CNRS 6010, Universite du Maine, 72085 Le Mans Cedex 9 (France)

    2010-06-15T23:59:59.000Z

    The structure of the high temperature alpha form of La{sub 6}W{sub 2}O{sub 15} has been determined ab-initio from high temperature laboratory X-ray and neutron time-of-flight data. This tungstate crystallizes in the non-centrosymmetric orthorhombic space group (No. 20) C222{sub 1}, with Z=2, a=12.6250(2) A, b=9.1875(1) A, c=5.9688(1) A. The structure comprises [O{sub 2}La{sub 3}] infinite ribbons and is better described by the structural formula [O{sub 2}La{sub 3}]{sub 2}[WO{sub 5.5}]{sub 2}. Using this description we can understand the strong structural similarity of the present compound with compounds of the general composition BiM{sub 2}AO{sub 6} (M=Cu, Mg, Zn, Mn, Cd, Ca, Pb; A=P, As, V) described as [O{sub 2}M{sub 2}Bi][AO{sub 4}]. The [WO{sub 5.5}] entity implies oxygen disorder in the material. - Graphical abstract: Projection of the polyhedra around the tungsten atom. Atoms labelled in grey are occupied at 50%. Short oxygen-oxygen distances are marked. The polyhedra represents WO{sub 5.5} that is related to the structural unit W{sub 2}O{sub 11} unit. Alpha-La{sub 6}W{sub 2}O{sub 15} could be described as [O{sub 2}La{sub 3}]{sub 2}[WO{sub 5.5}]{sub 2}.

  9. JOURNAL DE PHYSIQUE Colloque C5, suppl6ment au n08, Tome 46, aoOt 1985 page C5-487

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    that at tensile strain rates from 10-4 to ~3000/son several grades of depleted uranium small differences OF QUENCHING RATE ON THE TEMPERATURE AND STRAIN-RATE S E N S I T I V I T Y OF URANIUM 2W/o MOLYBDENUM ALLOY G- anical properties of uranium and its alloys. In recent work (2), however, it has been shown

  10. Entomology 489 Field Entomology

    E-Print Network [OSTI]

    Behmer, Spencer T.

    glass-topped insect drawer (w/ foam bottom) 48.00 Storage glass-topped insect drawer (w/o foam bottom Petri dishes 0.00 2-dram glass vials with lids 0.00 Specimen large glass killing jar with lid 2.00 Killing small glass killing jar with lid 1.00 squeeze bottles with filp-top lids 3.00 box of Kimwipes 2

  11. 851 S.W. Sixth Avenue, Suite 1100 Steve Crow 503-222-5161 Portland, Oregon 97204-1348 Executive Director 800-452-5161

    E-Print Network [OSTI]

    and Conservation Council Power System Costs and CO2 Emissions: 2030 0 10 20 30 40 50 60 70 80 90 Carbon Risk $45 COTonsPerYear(GenBased) Cost w/ CO2 Tax Cost w/o CO2 Tax CO2 Emissions 2005 CO2 Emissions #12;4 Northwest Power;5 Northwest Power and Conservation Council Frequency Distribution of CO2 Emissions in Carbon Target Scenarios

  12. Whole-Organism Concentration Ratios for Plutonium in Wildlife from Past US Nuclear Research Data

    SciTech Connect (OSTI)

    johansen, M.; Kamboj; Kuhne, W.

    2012-07-26T23:59:59.000Z

    Whole-organism concentration ratios (CR{sub wo-media}) for plutonium (Pu) in wildlife were calculated using data from the broad range of organism types and environmental settings of the US nuclear research program. Original sources included site-specific reports and scientific journal articles typically from 1960s to 80s research. Most of the calculated CR{sub wo-media} values are new to existing data sets, and, for some wildlife categories, serve to fill gaps or add to sparse data including those for terrestrial reptile; freshwater bird, crustacean and zooplankton; and marine crustacean and zooplankton. Ratios of Pu concentration in the whole-organism to that in specific tissues and organs are provided here for a range of freshwater and marine fish. The CR{sub wo-media} values in fish living in liquid discharge ponds were two orders of magnitude higher than those for similar species living in lakes receiving Pu from atmospheric fallout, suggesting the physico-chemical form of the source Pu can dominate over other factors related to transfer, such as organism size and feeding behavior. Small rodent data indicated one to two order of magnitude increases when carcass, pelt, and gastrointestinal tract were included together in the whole-organism calculation compared to that for carcass alone. Only 4% of Pu resided in the carcass of small rodents compared to 75% in the gastrointestinal tract and 21% in the pelt.

  13. Process for making a titanium diboride-chromium diboride-yttrium titanium oxide ceramic composition

    DOE Patents [OSTI]

    Holcombe, Cressie E. (Knoxville, TN); Dykes, Norman L. (Oak Ridge, TN)

    1992-01-01T23:59:59.000Z

    A ceramic composition composition is described. The ceramic composition consists essentially of from about 84 to 96 w/o titanium diboride, from about 1 to 9 w/o chromium diboride, and from about 3 to aobut 15 w/o yttrium-titanium-oxide. A method of making the ceramic composition is also described. The method of making the ceramic composition comprises the following steps: Step 1--A consolidated body containing stoichiometric quantities of titanium diboride and chromium diboride is provided. Step 2--The consolidated body is enclosed in and in contact with a thermally insulated package of yttria granules having a thickness of at least 0.5 inches. Step 3--The consolidated body enclosed in the thermally insulated package of yttria granules is heated in a microwave oven with microwave energy to a temperature equal to or greater than 1,900 degrees centigrade to sinter and uniformly disperse yttria particles having a size range from about 1 to about 12 microns throughout the consolidated body forming a densified body consisting essentially of titanium diboride, chromium diboride, and yttrium-titanium-oxide. The resulting densified body has enhanced fracture toughness and hardness.

  14. Titanium diboride-chromium diboride-yttrium titanium oxide ceramic composition and a process for making the same

    DOE Patents [OSTI]

    Holcombe, Cressie E. (Knoxville, TN); Dykes, Norman L. (Oak Ridge, TN)

    1991-01-01T23:59:59.000Z

    A ceramic composition is described. The ceramic composition consists essentially of from about 84 to 96 w/o titanium diboride, from about 1 to 9 w/o chromium diboride, and from about 3 to about 15 w/o yttrium-titanium-oxide. A method of making the ceramic composition is also described. The method of making the ceramic composition comprises the following steps: Step 1--A consolidated body containing stoichiometric quantities of titanium diboride and chromium diboride is provided. Step 2--The consolidated body is enclosed in and in contact with a thermally insulated package of yttria granules having a thickness of at least 0.5 inches. Step 3--The consolidated body enclosed in the thermally insulated package of yttria granules is heated in a microwave oven with microwave energy to a temperature equal to or greater than 1,900 degrees centigrade to sinter and uniformly disperse yttria particles having a size range from about 1 to about 12 microns throughout the consolidated body forming a densified body consisting essentially of titanium diboride, chromium diboride, and yttrium-titanium-oxide. The resulting densified body has enhanced fracture toughness and hardness.

  15. Process for making a titanium diboride-chromium diboride-yttrium titanium oxide ceramic composition

    DOE Patents [OSTI]

    Holcombe, C.E.; Dykes, N.L.

    1992-04-28T23:59:59.000Z

    A ceramic composition is described. The ceramic composition consists essentially of from about 84 to 96 w/o titanium diboride, from about 1 to 9 w/o chromium diboride, and from about 3 to about 15 w/o yttrium-titanium-oxide. A method of making the ceramic composition is also described. The method of making the ceramic composition comprises the following steps: Step 1--A consolidated body containing stoichiometric quantities of titanium diboride and chromium diboride is provided. Step 2--The consolidated body is enclosed in and in contact with a thermally insulated package of yttria granules having a thickness of at least 0.5 inches. Step 3--The consolidated body enclosed in the thermally insulated package of yttria granules is heated in a microwave oven with microwave energy to a temperature equal to or greater than 1,900 degrees centigrade to sinter and uniformly disperse yttria particles having a size range from about 1 to about 12 microns throughout the consolidated body forming a densified body consisting essentially of titanium diboride, chromium diboride, and yttrium-titanium-oxide. The resulting densified body has enhanced fracture toughness and hardness. No Drawings

  16. Materials testing at the Hanna-IV and Hoe Creek-III in situ coal-gasification sites

    SciTech Connect (OSTI)

    Loop, R.B.; LaRue, D.M.

    1981-03-01T23:59:59.000Z

    Candidate structural alloys were exposed to the direct product gas stream during three different in situ coal gasification experiments at two sites. Physical appearance and chemical analysis indicate that the coating on the specimens following exposure is typical of condensed hydrocarbons, coal char, coal ash, and mineral particles from the overburden. Deposits on specimens from one test had a fairly high concentration of sulfur (about 8 w/o) while the others had very low sulfur concentrations (0.313 w/o and 0.014 w/o, respectively). Energy-dispersive x-ray spectra indicate that corrosion occurred principally by oxidation, with some sulfidation. Mean penetration rates expressed in millimetres/year were calculated from weight loss data. No material evaluated showed a truly unacceptable degradation. There was no consistent difference in the amount of material removed from specimens with or without welds. Specimens from one test experienced no consistent difference in material removal between different exposure angles; a consistent difference in material loss and dents from particle impact indicated that erosion may have occurred in the other two tests. There was no indication of carburization, decarburization, or severe localized attack in the form of pitting or intergranular corrosion on any of the specimens examined. Results obtained for the flame-sprayed 316 SS specimens and one of the Alonized specimens indicated that use of these processes may be questionable in this environment.

  17. Cation–cation interactions and cation exchange in a series of isostructural framework uranyl tungstates

    SciTech Connect (OSTI)

    Balboni, Enrica [Department of Civil and Environmental Engineering and Earth Sciences, University of Notre Dame, Notre Dame, IN 46556 (United States); Burns, Peter C., E-mail: pburns@nd.edu [Department of Civil and Environmental Engineering and Earth Sciences, University of Notre Dame, Notre Dame, IN 46556 (United States); Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN 46556 (United States)

    2014-05-01T23:59:59.000Z

    The isotypical compounds (UO{sub 2}){sub 3}(WO{sub 6})(H{sub 2}O){sub 5} (1), Ag(UO{sub 2}){sub 3}(WO{sub 6})(OH)(H{sub 2}O){sub 3} (2), K(UO{sub 2}){sub 3}(WO{sub 6})OH(H{sub 2}O){sub 4} (3), Rb(UO{sub 2}){sub 3}(WO{sub 6})(OH)(H{sub 2}O){sub 3.5} (4), and Cs(UO{sub 2}){sub 3}(WO{sub 6})OH(H{sub 2}O){sub 3} (5) were synthesized, characterized, and their structures determined. Each crystallizes in space group Cc. (1): a=12.979 (3), b=10.238 (2), c=11.302 (2), ?=102.044 (2); (2): a=13.148 (2), b=9.520 (1), c=11.083 (2), ?=101.568 (2); (3): a=13.111 (8), b=9.930 (6), c=11.242 (7), ?=101.024 (7); (4): a=12.940 (2), b=10.231 (2), c=11.259(2), ?=102.205 (2); (5): a=12.983 (3), b=10.191 (3), c=11.263 (4), ?=101.661 (4). Compounds 1–5 are a framework of uranyl and tungsten polyhedra containing cation–cation interactions. The framework has three symmetrically distinct U(VI) cations, one tungsten, sixteen to eighteen oxygen atoms, and in 2–5, one monovalent cation. Each atom occupies a general position. Each U(VI) cation is present as a typical (UO{sub 2}){sup 2+} uranyl ion in an overall pentagonal bipyramidal coordination environment. Each pentagonal bipyramid shares two equatorial edges with two other pentagonal bipyramids, forming a trimer. Trimers are connected into chains by edge-sharing with WO{sub 6} octahedra. Chains are linked through cation–cation interactions between two symmetrically independent uranyl ions. This yields a remarkably complex system of intersecting channels that extend along [0 0 1] and [?1 1 0]. The cation exchange properties of 2 and 3 were characterized at room temperature and at 140 °C. - Graphical abstract: Chains of uranium and tungsten polyhedra are connected into a three dimensional framework by cation–cation interactions occurring between two symmetrically independent uranyl pentagonal bipyramids. Monovalent cations present in channels within the structure can be exchanged by room temperature or mild hydrothermal treatments. The framework of these compounds is robust to cation exchange and heat. (yellow polyhedra=uranium pentagonal bipyramids; blue polyhedra=tungsten octahedral, purple balls=K; yellow balls=Na; grey balls=Tl). - Highlights: • Five isostructural uranyl tungstates compounds were synthesized hydrothermally. • The structures consist of a chains of uranium and tungstate polyhedral. • Chains are connected into a framework by cation–cation interactions. • Cation exchange does not alter the structural integrity of the compounds. • Cation exchange was successful at room temperature and mild hydrothermal conditions.

  18. Structural, thermal, optical properties and simulation of white light of titanium-tungstate-tellurite glasses doped with dysprosium

    SciTech Connect (OSTI)

    Jyothi, L. [School of Physics, University of Hyderabad, Hyderabad 500046 (India); Upender, G. [Glass Science and Technology Section, Glass Division, CSIR-CGCRI, Kolkata 700032 (India); Kuladeep, R. [School of Physics, University of Hyderabad, Hyderabad 500046 (India); Rao, D. Narayana, E-mail: dnrsp@uohyd.ernet.in [School of Physics, University of Hyderabad, Hyderabad 500046 (India)

    2014-02-01T23:59:59.000Z

    Graphical abstract: CIE coordinate diagram of different concentrations of the Dy{sup 3+}-doped TTWD glasses with coordinates in the white light region. - Highlights: • Radiative lifetime of {sup 4}F{sub 9/2} level of Dy{sup 3+} ions is longer in the tellurite glass. • Quantum efficiency is found to be high. • These glasses are suitable materials for generating white light. - Abstract: Structural, thermal, optical properties and simulation of white light of Dy{sup 3+}-doped tellurite glasses of composition TTWD: (75 ? x)TeO{sub 2} ? 10TiO{sub 2} ? 15WO{sub 3} ? xDy{sub 2}O{sub 3} (x = 0, 0.1, 0.5, 1.0 and 2.0 mol%) were investigated. Raman spectra revealed that the glass contains TeO{sub 4}, TeO{sub 3}, WO{sub 4} and WO{sub 6} units. Differential scanning calorimetry (DSC) measurements were carried out to measure the glass transition temperature of all the glasses. From the optical absorption spectra, luminescence spectra and using the Judd–Ofelt (JO) analysis, we estimated the radiative transition probabilities, emission cross-sections, branching ratios and radiative lifetimes. The decay curves at lower concentrations are exponential while they show a non-exponential behavior at higher concentrations (?0.5 mol%) due to energy transfer processes. The effective lifetime for the {sup 4}F{sub 9/2} level decreases with increase in Dy{sub 2}O{sub 3} concentration for the glasses under investigation. The non-exponential decay curves could fit well to the Inokuti–Hirayama (IH) model with S = 6, indicating that the nature of interaction responsible for energy transfer is of dipole–dipole type. Simulation of white light is examined with varying concentration and the results indicate that these glasses are suitable for white light emitting diode applications.

  19. THE INSTITUTE OF ELECTRONICS, INFORMATION AND COMMUNICATION ENGINEERS

    E-Print Network [OSTI]

    Takiguchi, Tetsuya

    -- #12;[1] [2], [3] [4] [5] 1-best sigmoid 3. 4. 5. 2. 1 Fig. 1 An image of the robot. " " 1 1 1 330 49 3. 1-best s (request, chat) -- 2 -- #12;1 Table 1 Abilities of the robot. CSP / W = (w1, · · · , wn) O = (o1, · · · , ot) (^s, ^W) = argmax (s,W) P(s, W|O) = argmax (s,W) P(O)-1 P(s, W, O) P(s, W, O) P(s, W

  20. Growth and Characterization of Epitaxial Oxide Thin Films

    E-Print Network [OSTI]

    Garg, Ashish

    out during past three years has been published as follows: 1. A. Garg, J. A. Leake, and Z. H. Barber, Epitaxial Growth of WO3 Films on SrTiO3 and R- Sapphire, J. Phys.: D, Appl. Phys., 33 (9), 1048 (2000) 2. A. Garg, S. Dunn, and Z. H. Barber, Growth... of these films by 3-D Stranski-Krastanov mode. However, these films did not exhibit any ferroelectric activity. Highly epitaxial (116)-oriented films were deposited on SrTiO3 (110) substrates. These films were also very smooth with root mean square (RMS...

  1. Anger camera image generation with microcomputers

    E-Print Network [OSTI]

    Williams, Karl Morgan

    1988-01-01T23:59:59.000Z

    ANGER CAMERA IMAGE GENERATJON WITH iMICR0C0MPJJTERS A Thesis R, 'RI. MGVGAN NIJ. J. IAPLS SubiniL', ti tc: tbe ' taNua - CnlILEr nf Hnivetui ty ;-'r' Lal . '. . '. 6i', i. -ent oL th: ie9uite. . ;List. )i Lhe 4 El'. : ol MASTER 09 SC ENCE May... that with the u e of an innovat ive 'nterfsce system and appropriate software, a microcomputer was a). le tc acquire, display, and analyze Anger came;a images. The interface board designed for this projec. includes A ? D convert. era, a wo page memory system...

  2. Relationship of endogenous abscisic acid to peach chilling requirement, bloom date and applied gibberellic acid

    E-Print Network [OSTI]

    Derickson, Gary Wayne

    1977-01-01T23:59:59.000Z

    and main- tenance (19, 20, 22, 2G, '. . ", , !6, 47, 56, . Promiz!ant American re ear h rs have been Brs. J. I'I. Corgsz!, F. 0 ~ Iicnnis Jr. , a!zd S. L'. Ste?bridge, Cozgazz's wo "k has insclv. d pear!zcs. EIe a!!d his co-wozk= 's . ve z: a- suzed...). 14 CHAPTER IV RESULTS Experjmental Error Estimates of experimental error are as follows: he average dif- fe ence; 1) among three duplicate flo. . -er. bud samples from the same tree on two dii'ferent dates was . 06 ug, 2) among 3 duplicate extr...

  3. Double beta decay of ^{64,70}Zn and ^{180,186}W isotopes

    E-Print Network [OSTI]

    D. V. Poda

    2011-12-05T23:59:59.000Z

    The results of the experimental investigations of double beta processes in Zinc and Tungsten isotopes with the help of middle volume (117 g, 168 g and 699 g) low-background ZnWO_4 crystal scintillators are presented. The experiment was carried out in the low-background "DAMA/R&D" set-up at the Gran Sasso National Laboratories of the INFN (Italy) at a depth of \\approx3600 m w.e. The total measurement time exceeds ten thousand hours. New improved half-life limits on double electron capture and electron capture with positron emission in ^{64}Zn have been set: T^{2\

  4. New experimental limits on the alpha decays of lead isotopes

    E-Print Network [OSTI]

    J. W. Beeman; F. Bellini; L. Cardani; N. Casali; S. Di Domizio; E. Fiorini; L. Gironi; S. S. Nagorny; S. Nisi; F. Orio; L. Pattavina; G. Pessina; G. Piperno; S. Pirro; E. Previtali; C. Rusconi; C. Tomei; M. Vignati

    2012-12-12T23:59:59.000Z

    For the first time a PbWO4 crystal was grown using ancient Roman lead and it was run as a cryogenic detector. Thanks to the simultaneous and independent read-out of heat and scintillation light, the detector was able to discriminate beta/gamma interactions with respect to alpha particles down to low energies. New more stringent limits on the alpha decays of the lead isotopes are presented. In particular a limit of T_{1/2} > 1.4*10^20 y at a 90% C.L. was evaluated for the alpha decay of 204Pb to 200Hg.

  5. Range Monitoring with Photo-points

    E-Print Network [OSTI]

    McGinty, Allan; White, Larry D.

    1998-08-31T23:59:59.000Z

    Hammer or post driverSpray paintCamera (35 mm preferred) or digital cameraFilm (100 ASA preferred) T wo 6-foot folding rulers or 3-by-3-foot PVC frame (for vertical plots)Farm or ranch map or aerial photographY ellow pad Felt marking penThree-ring binder... convenient frame can be made by two 6-foot folding carpenter ? s rulers folded at their 3-foot position and placed toface each other , collectively forming a square. PVC pipe joined with elbows also may be used. After placing the plot on the ground, mark...

  6. The effect of lithiation on the electrochromism of sol-gel derived niobium oxide films

    SciTech Connect (OSTI)

    Macek, M.; Orel, B.; Krasovec, U.O. [National Inst. of Chemistry, Ljubljana (Slovenia)

    1997-09-01T23:59:59.000Z

    Niobium oxide films are promising cathodic electrochromic materials that in certain aspects can compete with the more frequently studied WO{sub 3} films. The films reported here were prepared using the sol-gel route from a NbCl{sub 5} precursor. The electrochromic properties were pronounced for crystalline films heat-treated at 500 C exhibiting transmittance changes between the colored and bleached states of 60% in the ultraviolet (UV) and 80% in the visible and near-infrared spectral regions. The reversibility of electrochromic changes of thick niobium oxide films (d > 250 nm) was enhanced by lithiation.

  7. Rates of acidic hydrolysis of diptych boroxazolidines

    E-Print Network [OSTI]

    Psarras, Theodore George

    1961-01-01T23:59:59.000Z

    . tollootug this uruummt wo ouuslder the time rotuirud ibr the uhuugo of unior of tho indioutor as tho "half period" for tl? olouvugu of the Ph 5 uutivo bose, fhe soouud feature is ths 4eseudouoo of tho half period uLoa the initial mnoontvattuu uf ths... value of A' oould be daiived fraa the sagnitudo of the interseptum The free energy uf sstivation ms oaloulate4 frcwc tho values, ds' and &g', using tho relation (5i4) ~ Tbe values of ttoso aotivation psraaetora aro given in Tabje 5, 5, Ia tho last...

  8. New binding materials for metal hydride electrodes which permit good recyclability

    SciTech Connect (OSTI)

    Hara, T.; Yasuda, N. (Japan Synthetic Rubber Co., Ltd., Yokkaichi (Japan). Development Center); Takeuchi, Y. (Japan Synthetic Rubber Co., Ltd., Tokyo (Japan). Electronics Project Dept.); Sakai, T.; Uchiyama, A.; Miyamura, H.; Kuriyama, N.; Ishikawa, H. (Government Industrial Research Inst., Osaka (Japan))

    1993-09-01T23:59:59.000Z

    Thermoplastic elastomers such as styrene-butadiene-styrene block copolymer (SBS) and styrene-ethylene/butylene-styrene block copolymer (SEBS) were used successfully as binding materials for metal hydride (MH) electrodes of a nickel-metal hydride battery. These binding materials have a rubber-like nature and are soluble in organic solvents. It was easy to remove the alloy powder from a used electrode for recycling. The battery performance depended on both the kind and amount of binding materials. The best discharge capacity and rate capability were obtained for MH electrodes containing 2--5 weight percent (w/o) SEBS. The particle size distributions for the alloy were examined successfully.

  9. ROLES OF SULFOTRANSFERASE ENZYMES IN TRANS-PLACENTAL DISPOSITION

    E-Print Network [OSTI]

    Mitra, Pallabi

    2009-01-28T23:59:59.000Z

    activities in BeWo?????.55 2.3.3 Effect of inhibitors 2,6-dichloro-4-nitrophenol (DCNP) and NaCl?....58 2.3.4 Thermal stability?????????????????????.58 2.3.5 17?-estradiol and dehydroepiandrosterone sulfation activities in Be... connective tissue, and the fetal capillary endothelium (Figures 1.2.1 and 1.2.2). Figure 1.2.1 The mature human placenta showing the villous tree extending from the chorionic plate into the intervillous space where they are surrounded...

  10. Development of a fast neutron therapy beam placement film technique 

    E-Print Network [OSTI]

    Baron, Robert Layton

    1971-01-01T23:59:59.000Z

    by the fibro sarcoma. . . . . . . . . . . . . . . . . . ~ 31 32 39 40 Figure 10. This roentgenograph of subject OA276 shows the position of the Pb-covered stint used in skin-sparing experiments. 11. The head of Dog FOA276 shows good contrast between... was 9. 8 rads. 45 14. This screened placement film of Candy required only a 0. 88 rad dose on Kodak RP-14 film. 46 15. Dog FOA272 was the subject of this 0. 62 rad dose, CaWO screened placement film on Kodak RP-14 film. . . 47 4 16. This placement...

  11. The World of Dark Shadows Issue 26

    E-Print Network [OSTI]

    Multiple Contributors

    1980-01-01T23:59:59.000Z

    Stroka and Humbert Allen Astredo . Hope you enjoy the material feat . them, and the characters they created, as \\'Iel1 as the t~r~ng regular features. 0 er !Text issue is the special Joan Bennett/Dennis Pt.(Cont. pg. 43) 4. . a r~ck one, 5. EPITAPHS..., who enterest i n stealth, his nose behind him, his face turned backward, who loses that for which he came. " Run out, thou who comest in darkness, w~o enterest in stealth, her nose behind her, her face turned backward, who loses that for which she...

  12. Low-temperature processable amorphous In-W-O thin-film transistors with high mobility and stability

    SciTech Connect (OSTI)

    Kizu, Takio; Aikawa, Shinya; Mitoma, Nobuhiko; Shimizu, Maki; Gao, Xu; Lin, Meng-Fang; Tsukagoshi, Kazuhito, E-mail: TSUKAGOSHI.Kazuhito@nims.go.jp [International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044 (Japan); Nabatame, Toshihide [MANA Foundry and MANA Advanced Device Materials Group, National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044 (Japan)

    2014-04-14T23:59:59.000Z

    Thin-film transistors (TFTs) with a high stability and a high field-effect mobility have been achieved using W-doped indium oxide semiconductors in a low-temperature process (?150?°C). By incorporating WO{sub 3} into indium oxide, TFTs that were highly stable under a negative bias stress were reproducibly achieved without high-temperature annealing, and the degradation of the field-effect mobility was not pronounced. This may be due to the efficient suppression of the excess oxygen vacancies in the film by the high dissociation energy of the bond between oxygen and W atoms and to the different charge states of W ions.

  13. The hero's story: typology, biblical allusion, and persona in Alvar Nu?n?ez Cabeza de Vaca's Narrative

    E-Print Network [OSTI]

    Bell, Glenna Gail

    1991-01-01T23:59:59.000Z

    Vaca was able to combine components of both the classical 19 (warrior) hero and Christian (savior) hero to reveal himself as a Renaissance hero. In The Mi in dom of t Franciscans in the ~Ne W~o g, John Leddy Phelan observes that in Spain during... his Observants as a model; in 1517 the Observants became the Franciscan Order "when all the Conventual monasteries in Spain were closed" (45-46) . Phelan believes that "the methods of exegesis-- the typological interpretation of the Bible...

  14. Long cycle life solid-state solid polymer electrolyte cells

    SciTech Connect (OSTI)

    Sammells, A.F.

    1988-02-02T23:59:59.000Z

    This patent describes a rechargeable solid-state lithium conducting solid polymer electrolyte electrochemical cell comprising: a lithium intercalation compound negative electrode selected from the group consisting of: MoO/sub 2/; RuO/sub 2/; WO; OsO/sub 2/; IrO/sub 2/; and Mo1/2V1/2O/sub 2/; a lithium ion conducting solid polymer electrolyte comprising a lithium ion conducting supporting electrolyte complexed with a solid polymer contacting the negative electrode on one side; and a lithium intercalation compound positive electrode contacting the opposite side of the solid polymer electrolyte.

  15. A class of orthogonal polynomials in two variables 

    E-Print Network [OSTI]

    Jones, Robert Allen

    1962-01-01T23:59:59.000Z

    . 18 I I LFi(xFiNDHE PRODUCT POLYNONIALS IN TNO VARIABL7S 34 2. 1 FUNDAPfENTAI TREORENS AND D'EFINITIONS. . 2. 2 CONVERSENCE PROP'ERTIFS ~ BIBLIOQH(l'RY 1 N T R 0 D TJ 0 T I 0 N The first chapter of this presentation will serve to develop some.... The second chapter has its founda*ions in the first. That is, many of' the properties oi' the orthogonal polynomials in *wo varia'blas can be developed from t be proper*i. es of the orthogonal polynomia3. s 1n one variable. In this presentation "interval...

  16. The reproductive pattern of the swamp rabbit in Brazos County, Texas

    E-Print Network [OSTI]

    Hunt, Thomas Phillip

    1956-01-01T23:59:59.000Z

    nseminations, except the one attempted on doe Wo. 30, resulted in the does' display1ng distended teats by at, least the twent1eth day following insemination. This symptom may have appeared before the twentieth day, but in most cases earl1er ex- aminations... ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ p ~ ~ ~ ~ ~ ~ 19 3 ~ X-Iay of gravid doe at 37 days of gestation 20 4 ~ Representative embI yos and young desorlbed Table' 5 ~ ~ ~ ~ e ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ 37 5 ~ Doe Mo. 29 photographed in her cage a few hours after her first birth...

  17. Development of Methods for Safe Processing of Home Canned Meat.

    E-Print Network [OSTI]

    Turk, R. D. (Richard Duncan); Cover, Sylvia; Kerns, A. H. (Albert Harrison)

    1943-01-01T23:59:59.000Z

    100 minutes, with "flonling steam" 106 minutes. When steaming is done over a low flame on a gas or on a kerosene stove, the time required to obtain "flowing steam" may be as much as 2 or 3 hours. In such cases the time after "flowing steam" may... enough sealing I 1 I 1 Kerosene stow 22 Low gas flame 1 2 Time in hours 9 1 Tine in hours Chart 4. Heat penetration curves for Wo. 1 cans during heating before seallng kerosene stove and over low gas flame. 10 BULLETIN NO. 6.35, TEXAS...

  18. On the Alpha Activity of Natural Tungsten Isotopes

    E-Print Network [OSTI]

    F. A. Danevich A; A. Sh. Georgadze A; V. V. Kobychev A; S. S. Nagorny A; A. S. Nikolaiko A; W

    The indication for the ? decay of 180W with a half-life T ? 1/2 =1.1+0.8 ?0.4(stat)±0.3(syst)×1018 yr has been observed for the first time with the help of the super-low background 116CdWO4 crystal scintillators. In conservative approach the lower limit on half-life of 180W has been established as T ? 1/2 (180W) ? 0.7×1018 yr at 90 % C.L. Besides, new T ? 1/2 bounds were set for ? decay of

  19. Calculational procedure for multicomponent distillation columns with side-stream-strippers

    E-Print Network [OSTI]

    Dickey, Billy Ray

    1962-01-01T23:59:59.000Z

    On the basis of the compositions obtained, the temperature is caloulated for each plate by use of tha bubble point procedure. For the corrected profile, a new value of D must be assumed, and a value of D calculated while holding the "control component..."i& 1 yec ! o cc, 'cu!atc !, et corrvctec', d;otit! itc r itcs, (c ), ;rhich arc in com onent-material co . . cc und w!!o . v . :um e. u ls t!ie secor. fie. disti'1. ' e rate, &i-v 1 "~ ol quntions (1: i ind (19! . ay t ien ii used to c . " &&ul . te...

  20. Regional Production Economics for Ethylene and Propylene Derivatives

    E-Print Network [OSTI]

    McCormack, G.; Pavone, T.

    the significant p~oduction cost indices in each of 10 ~egions, and uses those indices to cal':ulate the production cost of majo~ ethylene and p~oPylene de~ivatives. The regions conside~ed a~e: B~azil, Weste~n Canada, China, Indonesia. Japan. Saudi A... 95 78 B5 7B 142 65 95 95 63 92 p~oduction costs is to dete~mine a ~ep~esentative plant capacity. SRI evaluated a va~iety of plants, with ~espect to actual capacities, and dete~mined the ~ep~esentative size of wo~ld competitive capacity...

  1. A generalization of Richardson's criterion of turbulence

    E-Print Network [OSTI]

    Dugstad, Ivar

    1956-01-01T23:59:59.000Z

    place in the t~ plane, then (&ee Fi~ux'e 1) Substitution of this into tl e procedin(. eouation for P . ives The nate at vrhi ch;rook is done by eddy ntrcsseo is r gqP f) err, (( l. g~) gz r xw w ?, (~z) r + () J~v t)( Jo: 0) i J 2l If we define F... . : hich this occurs car be deter- mined if wo evaluate (8+ C ? F) and (&- & j (H D) 2 LIBRARY A e ej CIILLEQE QF TEXAS 22 jj'-a)jest 0) =lp (az) ~j' j6+"&[~. ((~ ;?- )(' . ' ?( -5 -)- We can now distinguish between the following cases which...

  2. Latin American Theatre Review, Volume 06, Number 2: Front Matter

    E-Print Network [OSTI]

    1973-04-01T23:59:59.000Z

    LATIN AMERICAN THEATRE REVIEW a Journal devoted to the Theatre and Drama of Spanish and Portuguese America Editor (il.OR(,l. W. WoODYARI) Associate Editor JOHN S. BRIMIWOOD Assistant Editors WILLIAM R. BLUL RAYMOND D. SOUZA Ml... are available at $4.00 each. Please direct all correspondence to: Lditors, Latin Amernan Theatre Renew. The Center of Latin American Studies, The University of Kansas, Lawrence, Kansas 66U-H. 6/2 LATIN AMERICAN THEATRE REVIEW SPRING1973 Contents Esa luna...

  3. Triadelphia, West Virginia: Energy Resources | 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 onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere IRaghuraji Agro IndustriesTown of Ladoga, Indiana (UtilityTri-State Electric Member Corp Jump to:TriWo AG

  4. Tribal Energy Resource Agreements | 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 onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere IRaghuraji Agro IndustriesTown of Ladoga, Indiana (UtilityTri-State Electric Member Corp Jump to:TriWo

  5. Processing of Refractory Metal Alloys for JOYO Irradiations

    SciTech Connect (OSTI)

    RF Luther; ME Petrichek

    2006-02-21T23:59:59.000Z

    This is a summary of the refractory metal processing experienced by candidate Prometheus materiats as they were fabricated into specimens destined for testing within the JOYO test reactor, ex-reactor testing at Oak Ridge National Laboratory (ORNL), or testing within the NRPCT. The processing is described for each alloy from the point of inception to the point where processing was terminated due to the cancellation of Naval Reactor's involvement in the Prometheus Project. The alloys included three tantalum-base alloys (T-111, Ta-10W, and ASTAR-811C), a niobium-base alloy, (FS-85), and two molybdenum-rhenium alloys, one containing 44.5 w/o rhenium, and the other 47.5 w/o rhenium. Each of these alloys was either a primary candidate or back-up candidate for cladding and structural applications within the space reactor. Their production was intended to serve as a forerunner for large scale production ingots that were to be procured from commercial refractory metal vendors such as Wah Chang.

  6. Commissioning Run of the CRESST-II Dark Matter Search

    E-Print Network [OSTI]

    G. Angloher; M. Bauer; I. Bavykina; A. Bento; A. Brown; C. Bucci; C. Ciemniak; C. Coppi; G. Deuter; F. von Feilitzsch; D. Hauff; S. Henry; P. Huff; J. Imber; S. Ingleby; C. Isaila; J. Jochum; M. Kiefer; M. Kimmerle; H. Kraus; J. -C. Lanfranchi; R. F. Lang; B. Majorovits; M. Malek; R. McGowan; V. B. Mikhailik; E. Pantic; F. Petricca; S. Pfister; W. Potzel; F. Proebst; W. Rau; S. Roth; K. Rottler; C. Sailer; K. Schaeffner; J. Schmaler; S. Scholl; W. Seidel; L. Stodolsky; A. J. B. Tolhurst; I. Usherov; W. Westphal

    2009-02-16T23:59:59.000Z

    The CRESST cryogenic direct dark matter search at Gran Sasso, searching for WIMPs via nuclear recoil, has been upgraded to CRESST-II by several changes and improvements.We present the results of a commissioning run carried out in 2007. The basic element of CRESST-II is a detector module consisting of a large (~ 300 g) CaWO_4 crystal and a very sensitive smaller (~ 2 g) light detector to detect the scintillation light from the CaWO_4.Information from light-quenching factor studies allows the definition of a region of the energy-light yield plane which corresponds to tungsten recoils. A neutron test is reported which supports the principle of using the light yield to identify the recoiling nucleus. Data obtained with two detector modules for a total exposure of 48 kg-days are presented. Judging by the rate of events in the "all nuclear recoils" acceptance region the apparatus shows a factor ~ten improvement with respect to previous results, which we attribute principally to the presence of the neutron shield. In the "tungsten recoils" acceptance region three events are found, corresponding to a rate of 0.063 per kg-day. Standard assumptions on the dark matter flux, coherent or spin independent interactions,then yield a limit for WIMP-nucleon scattering of 4.8 \\times 10^{-7}pb, at M{WIMP} ~50 GeV.

  7. High sensitivity double beta decay study of 116-Cd and 100-Mo with the BOREXINO Counting Test Facility (CAMEO project)

    E-Print Network [OSTI]

    G. Bellini; B. Caccianiga; M. Chen; F. A. Danevich; M. G. Giammarchi; V. V. Kobychev; B. N. Kropivyansky; E. Meroni; L. Miramonti; A. S. Nikolayko; L. Oberauer; O. A. Ponkratenko; V. I. Tretyak; S. Yu. Zdesenko; Yu. G. Zdesenko

    2000-07-11T23:59:59.000Z

    The unique features (super-low background and large sensitive volume) of the CTF and BOREXINO set ups are used in the CAMEO project for a high sensitivity study of 100-Mo and 116-Cd neutrinoless double beta decay. Pilot measurements with 116-Cd and Monte Carlo simulations show that the sensitivity of the CAMEO experiment (in terms of the half-life limit for neutrinoless double beta decay) is (3-5) 10^24 yr with a 1 kg source of 100-Mo (116-Cd, 82-Se, and 150-Nd) and about 10^26 yr with 65 kg of enriched 116-CdWO_4 crystals placed in the liquid scintillator of the CTF. The last value corresponds to a limit on the neutrino mass of less than 0.06 eV. Similarly with 1000 kg of 116-CdWO_4 crystals located in the BOREXINO apparatus the neutrino mass limit can be pushed down to m_nu<0.02 eV.

  8. How isopolyanions self-assemble and condense into a 2D tungsten oxide crystal: HRTEM imaging of atomic arrangement in an intermediate new hexagonal phase

    SciTech Connect (OSTI)

    Chemseddine, A. [Helmholtz-Zentrum Berlin fuer Materialien und Energie GmbH, Solarenergieforschung SE4, Glienicker Str. 100, 14109 Berlin (Germany)], E-mail: chemseddine@hmi.de; Bloeck, U. [Helmholtz-Zentrum Berlin fuer Materialien und Energie GmbH, Solarenergieforschung SE4, Glienicker Str. 100, 14109 Berlin (Germany)

    2008-10-15T23:59:59.000Z

    The structure and structural evolution of tungstic acid solutions, sols and gels are investigated by high-resolution electron microscopy (HRTEM). Acidification of sodium tungstate solutions, through a proton exchange resin, is achieved in a way that ensures homogeneity in size and shape of intermediate polytungstic species. Gelation is shown to involve polycondensation followed by a self-assembling process of polytungstic building blocks leading to sheets with a layered hexagonal structure. Single layers of this new metastable phase are composed of three-, four- and six-membered rings of WO{sub 6} octahedra located in the same plane. This is the first time that a 2D oxide crystal is isolated and observed by direct atomic resolution. Further ageing and structural evolution leading to single sheets of 2D ReO{sub 3}-type structure is directly observed by HRTEM. Based on this atomic level imaging, a model for the formation of the oxide network structure involving a self-assembling process of tritungstic based polymeric chain is proposed. The presence of tritungstic groups and their packing in electrochromic WO{sub 3} films made by different techniques is discussed. - Graphical abstract: From the isopolyanion to the extended bulk tungsten oxide: HRTEM imaging.

  9. Low-Temperature Light Detectors with Neganov-Luke Amplification

    E-Print Network [OSTI]

    Isaila, C; Feilitzsch, F v; Gütlein, A; Kemmer, J; Lachenmaier, T; Lanfranchi, J -C; Pfister, S; Potzel, W; Roth, S; Sivers, M v; Strauss, R; Westphal, W; Wiest, F

    2011-01-01T23:59:59.000Z

    The simultaneous measurement of phonons and scintillation light induced by incident particles in a scintillating crystal such as CaWO4 is a powerful technique for the active rejection of background induced by gamma's and beta's as well as neutrons in direct Dark Matter searches. However, less than ~1% of the energy deposited in a CaWO4 crystal is detected as light. Thus, very sensitive light detectors are needed for an efficient event-by-event background discrimination. Due to the Neganov-Luke effect, the threshold of low-temperature light detectors based on semiconducting substrates can be improved significantly by drifting the photon-induced electron-hole pairs in an applied electric field. We present measurements with low-temperature light detectors based on this amplification mechanism. The Neganov-Luke effect makes it possible to improve the signal-to-noise ratio of our light detectors by a factor of ~9 corresponding to an energy threshold of ~21 eV. We also describe a method for an absolute energy calib...

  10. Crystalline mesoporous tungsten oxide nanoplate monoliths synthesized by directed soft template method for highly sensitive NO{sub 2} gas sensor applications

    SciTech Connect (OSTI)

    Hoa, Nguyen Duc, E-mail: ndhoa@itims.edu.vn [International Training Institute for Materials Science (ITIMS), Hanoi University of Science and Technology (HUST) (Viet Nam); Duy, Nguyen Van [International Training Institute for Materials Science (ITIMS), Hanoi University of Science and Technology (HUST) (Viet Nam)] [International Training Institute for Materials Science (ITIMS), Hanoi University of Science and Technology (HUST) (Viet Nam); Hieu, Nguyen Van, E-mail: hieu@itims.edu.vn [International Training Institute for Materials Science (ITIMS), Hanoi University of Science and Technology (HUST) (Viet Nam)

    2013-02-15T23:59:59.000Z

    Graphical abstract: Display Omitted Highlights: ? Mesoporous WO{sub 3} nanoplate monoliths were obtained by direct templating synthesis. ? Enable effective accession of the analytic molecules for the sensor applications. ? The WO{sub 3} sensor exhibited a high performance to NO{sub 2} gas at low temperature. -- Abstract: Controllable synthesis of nanostructured metal oxide semiconductors with nanocrystalline size, porous structure, and large specific surface area is one of the key issues for effective gas sensor applications. In this study, crystalline mesoporous tungsten oxide nanoplate-like monoliths with high specific surface areas were obtained through instant direct-templating synthesis for highly sensitive nitrogen dioxide (NO{sub 2}) sensor applications. The copolymer soft template was converted into a solid carbon framework by heat treatment in an inert gas prior to calcinations in air to sustain the mesoporous structure of tungsten oxide. The multidirectional mesoporous structures of tungsten oxide with small crystalline size, large specific surface area, and superior physical characteristics enabled the rapid and effective accession of analytic gas molecules. As a result, the sensor response was enhanced and the response and recovery times were reduced, in which the mesoporous tungsten oxide based gas sensor exhibited a superior response of 21,155% to 5 ppm NO{sub 2}. In addition, the developed sensor exhibited selective detection of low NO{sub 2} concentration in ammonia and ethanol at a low temperature of approximately 150 °C.

  11. Cells containing solvated electron lithium negative electrodes

    SciTech Connect (OSTI)

    Uribe, F.A.; Semkow, K.W.; Sammells, A.F. (Eltron Research, Incorporated, Aurora, IL (US))

    1989-12-01T23:59:59.000Z

    Preliminary work performed on a novel solvated electron lithium negative electrode which may have application in either high energy density secondary or reserve battery systems is discussed. The lithium electrode investigated consisted of lithium initially dissolved in liquid ammonia to give a solvated electron solution. Containment of this liquid negative active material from direct contact with a liquid nonaqueous electrolyte present in the cell positive electrode compartment was addressed via the use of a lithium intercalated electronically conducting ceramic membrane of the general composition Li{sub x}WO{sub 2}(0.1{lt}x{lt} 1.0). Secondary electrochemical cells having the general configuration Li,NH{sub 3}/Li{sub x}WO{sub 2}NAE/TiS{sub 2} using nonaqueous electrolytes (NAE) based upon both propylene carbonate and 2Me-THF. Depending upon initial lithium activity in the negative electrode compartments the cell possessed an initial open-circuit potential (OCP 3.44V). Both cells, which were operated at ambient pressure (low temperature) and ambient temperature (high pressure) showed evidence for electrochemical reversibility.

  12. Double {beta} experiments with the help of scintillation and HPGe detectors at Gran Sasso

    SciTech Connect (OSTI)

    Barabash, A.; Konovalov, S. I.; Umatov, V. I. [Institute of Theoretical and Experimental Physics, Moscow (Russian Federation); Belli, P.; D'Angelo, S.; Di Marco, A. [INFN, Sezione di Roma ''Tor Vergata'', Rome (Italy); Bernabei, R. [INFN, Sezione di Roma ''Tor Vergata '', Rome (Italy); Dipartimento di Fisica, Universita di Roma ''Tor Vergata'', Rome (Italy); Boiko, R. S.; Chernyak, D. M.; Danevich, F. A.; Kobychev, V. V.; Kropivyansky, B. N.; Kudovbenko, V. M.; Nagorny, S. S.; Podviyanuk, R. B.; Polischuk, O. G.; Tretyak, V. I.; Vyshnevskyi, I. M.; Yurchenko, S. S. [Institute for Nuclear Research, Kyiv (Ukraine); Brudanin, V. B. [Joint Institute for Nuclear Research, Dubna (Russian Federation); and others

    2011-12-16T23:59:59.000Z

    A search for double beta decay of {sup 64,70}Zn, {sup 180,186}W was carried out by using low background ZnWO{sub 4} crystal scintillators, while a CeCl{sub 3} scintillation detector was applied to investigate 2{beta} processes in {sup 136,138,142}Ce. A search for 2{beta} decay of {sup 96,104}Ru, {sup 156,158}Dy, {sup 190,198}Pt and study of 2{nu}2{beta} decay of {sup 100}Mo to the first excited 0{sup +} level of {sup 100}Ru were realized by ultra-low background HPGe {gamma} spectrometry. Moreover, CdWO{sub 4} crystal scintillators from enriched {sup 106}Cd and {sup 116}Cd isotopes were developed to search for 2{beta} decay of {sup 106}Cd and {sup 116}Cd. Finally, experiments aimed to investigate {sup 96,104}Ru and {sup 116}Cd are in progress and a new phase of the experiment to search for 2{beta} processes in {sup 106}Cd is in preparation.

  13. Low-Temperature Light Detectors: Neganov-Luke Amplification and Calibration

    E-Print Network [OSTI]

    C. Isaila; C. Ciemniak; F. v. Feilitzsch; A. Gütlein; J. Kemmer; T. Lachenmaier; J. -C. Lanfranchi; S. Pfister; W. Potzel; S. Roth; M. v. Sivers; R. Strauss; W. Westphal; F. Wiest

    2012-09-17T23:59:59.000Z

    The simultaneous measurement of phonons and scintillation light induced by incident particles in a scintillating crystal such as CaWO4 is a powerful technique for the active rejection of background induced by gamma's and beta's and even neutrons in direct Dark Matter searches. However, less than ~1% of the energy deposited in a CaWO4 crystal is detected as light. Thus, very sensitive light detectors are needed for an efficient event-by-event background discrimination. Due to the Neganov-Luke effect, the threshold of low-temperature light detectors based on semiconducting substrates can be improved significantly by drifting the photon-induced electron-hole pairs in an applied electric field. We present measurements with low-temperature light detectors based on this amplification mechanism. The Neganov-Luke effect makes it possible to improve the signal-to-noise ratio of our light detectors by a factor of ~9 corresponding to an energy threshold of ~21 eV. We also describe a method for an absolute energy calibration using a light-emitting diode.

  14. Oscillation and collective conveyor of water-in-oil droplets by microfluidic bolus flow

    E-Print Network [OSTI]

    Ohmura, Takuya; Kamei, Ken-ichiro; Maeda, Yusuke T

    2015-01-01T23:59:59.000Z

    Microfluidic techniques have been extensively developed to realize micro-total analysis systems in a small chip. For microanalysis, the trapping or arranging of objects in a line is a critical step. Physical effects such as inertial lift force have been utilized so far, however, hydrodynamic interaction in a many body system is yet to be explored despite its relevance to pattern formation. Here, we report water-in-oil (W/O) droplets can be transported with sequential order in the grid of one-dimensional array of another large W/O droplets. As each droplet comes close to an interspace of the large droplet array, while exhibiting persistent back-and-forth motion, it is conveyed at a velocity equal to the droplet array. The droplet also makes asymmetric orbit to and from the large droplet behind, suggesting vortex like stream was involved. We confirm the appearance of closed streamlines, which called bolus flow, in numerical simulation based on lattice Boltzmann method. The existence region of bolus flow account...

  15. Behavior of the electroless composite films plated from a Ni-P bath with metallic dispersion of Zr and Nb powders

    SciTech Connect (OSTI)

    Osaka, T.; Koiwa, I.; Usuda, M.; Arai, K.; Saito, I.

    1989-04-01T23:59:59.000Z

    An electroless Ni-Zr-P composite film and a Ni-Nb-P composite film were plated and their heat-treating behaviors were investigated. The addition of 20g dm/sup -3/ of metallic powder resulted in a composite film that contained 21.2 weight percent (w/o) of Zr. (13.8 atom percent (a/o)), or 4.8 w/o of Nb. (2.9 a/o), respectively. Both metallic powders were dispersed uniformly throughout the film. The metallic Ni formed by the crystallization on the Ni-P matrix diffused into the metallic powders, and the amorphous Ni-Zr and Ni-Nb phases were formed by heat-treatment at 500/sup 0/ or 300/sup 0/C. Some parts of the amorphous Ni-Zr phases and the metallic Ni phases combined to form intermetallic compounds by heat-treatment at 600/sup 0/C. The nickel-rich parts of the amorphous Ni-Nb phase were converted into a metastable Ni-Nb phase (zeta phase) or a Ni-Nb solid solution by heat-treatment at 700/sup 0/C. The longer heating time at 400/sup 0/C increased the amount of the Ni-Zr amorphous phase: however, it decreased the reactivity of the amorphous Ni-Zr phase. The same heat-treatment of 400/sup 0/C did not give the considerable change on the amorphous Ni-Nb phase.

  16. Kinetics of generation, relaxation, and accumulation of electronic excitations under two-photon interband picosecond absorption in tungstate and molibdate crystals

    SciTech Connect (OSTI)

    Lukanin, V. I.; Karasik, A. Ya., E-mail: karasik@lst.gpi.ru [Russian Academy of Sciences, Prokhorov General Physics Institute (Russian Federation)

    2013-08-15T23:59:59.000Z

    Under two-photon 523.5 nm interband picosecond laser excitation, we measured the kinetics of induced absorption in PbWO{sub 4}, ZnWO{sub 4}, and PbMoO{sub 4} crystals with 532 to 633 nm continuous probe radiation. We obtained real-time information about the dynamics of the generation, relaxation, and accumulations of electronic excitations over a wide time range (from picoseconds to hundreds of seconds) and the 77-300 K temperature range. For the studied crystals, exponential temperature-independent growth of the induced absorption (IA) with 60 ns rise time reflects the dynamics of the generation of electronic excitation. The kinetics of the IA exponential growth with temperature-dependent 3.5-11 {mu}s time constants reflect the dynamics of energy migration between neighboring tungstate (molibdate) ions to traps for the studied crystals. The multiexponential relaxation absorption kinetics strongly depend on temperature, and the relaxation decay time of induced absorption increased from tens to hundreds of milliseconds to seconds under crystal cooling from 300 to 77 K. We found that the increase in the laser pump repetition rate (0-10 Hz) leads to the accumulation of electronic excitations. Control of the repetition rate and the number of excitations allowed us to change the relaxation time of the induced absorption by more than two orders of magnitude. Due to accumulation of excitations at 77 K, the absorption relaxation time can exceed 100 s for PbWO{sub 4} and PbMoO{sub 4} crystals. In the initially transparent crystals, two-photon interband absorption (2PA) leads to crystals opacity at the 523 and 633 nm wavelengths. (An inverse optical transmission of the crystals exceeds 50-55 at a 50-100 GW/cm{sup 2} pump intensity.) Measured at {approx}1 mW probe radiation of 532 and 633 nm wavelengths, the induced absorption values are comparable with those obtained under two-photon absorption at {approx}5 kW pump power. An optical 2PA shutter for the visible spectral range is proposed with a variable shutting time from hundreds of microseconds to tens of seconds.

  17. Micro structural studies of PVA doped with metal oxide nanocomposites films

    SciTech Connect (OSTI)

    Kumar, N. B. Rithin [Dept. of Physics, Srinivas School of Engineering, Mangalore-575025, Karnataka (India); Crasta, Vincent, E-mail: vcrasta@yahoo.com; Viju, F. [Dept. of Physics, St. Joseph Engineering College, Vamanjoor, Mangalore-575028, Karnataka (India); Praveen, B. M. [Dept. of Chemistry, Srinivas School of Engineering, Mangalore-575025, Karnataka (India); Shreeprakash, B. [Dept. of Mechanical Engineering, Srinivas School of Engineering, Mangalore-575025, Karnataka (India)

    2014-04-24T23:59:59.000Z

    Nanostructured PVA polymer composites are of rapidly growing interest because of their sized-coupled properties. The present article deals with both ZnO and WO{sub 3} embedded in a polyvinyl alcohol (PVA) matrix using a solvent casting method. These films were characterized using FTIR, XRD, and SEM techniques. The FTIR spectra of the doped PVA shows shift in the bands, which can be understood on the basis of intra/inter molecular hydrogen bonding with the adjacent OH group of PVA. The phase homogeneity and morphology of the polymer composites have been analyzed using scanning electron microscope (SEM). The crystal structure and crystallinity of polymer nanocomposites were studied by X-ray diffraction technique (XRD). Thus due to the interaction of dopant and complex formation, the structural repositioning takes place and crystallinity of the nanocomposites decreases.

  18. Study of optical properties of Erbium doped Tellurite glass-polymer composite

    SciTech Connect (OSTI)

    Sushama, D., E-mail: sushasukumar@gmail.com [Research Awardee, LAMP, Dept. of Physics, Nit, Calicut, India and Dept. of Physics, M.S.M. College, Kayamkulam, Kerala (India)

    2014-10-15T23:59:59.000Z

    Chalcogenide glasses have wide applications in optical device technology. But it has some disadvantages like thermal instability. Among them Tellurite glasses exhibits high thermal Stability. Doping of rare earth elements into the Tellurite glasses improve its optical properties. To improve its mechanical properties composites of this Tellurite glasses with polymer are prepared. Bulk samples of Er{sub 2}O{sub 3} doped TeO{sub 2}?WO{sub 3}?La{sub 2}O{sub 3} Tellurite glasses are prepared from high purity oxide mixtures, melting in an alumina crucible in air atmosphere. Composites of this Tellurite glasses with polymer are prepared by powder mixing method and the thin films of these composites are prepared using polymer press. Variations in band gap of these composites are studied from the UV/Vis/NIR absorption.

  19. Light Dark Matter in the light of CRESST-II

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Kopp, Joachim; Schwetz, Thomas; Zupan, Jure

    2012-03-01T23:59:59.000Z

    Recently the CRESST collaboration has published the long anticipated results of their direct Dark Matter (DM) detection experiment with a CaWO4 target. The number of observed events exceeds known backgrounds at more than 4? significance, and this excess could potentially be due to DM scattering. We confront this interpretation with null results from other direct detection experiments for a number of theoretical models, and find that consistency is achieved in non-minimal models such as inelastic DM and isospin-violating DM. In both cases mild tension with constraints remain. The CRESST data can, however, not be reconciled with the null results andmore »with the positive signals from DAMA and CoGeNT simultaneously in any of the models we study.« less

  20. Impact of geometry on light collection efficiency of scintillation detectors for cryogenic rare event searches

    E-Print Network [OSTI]

    F. A. Danevich; V. V. Kobychev; R. V. Kobychev; H. Kraus; V. B. Mikhailik; V. M. Mokina; I. M. Solsky

    2014-04-30T23:59:59.000Z

    Simulations of photon propagation in scintillation detectors were performed with the aim to find the optimal scintillator geometry, surface treatment, and shape of external reflector in order to achieve maximum light collection efficiency for detector configurations that avoid direct optical coupling, a situation that is commonly found in cryogenic scintillating bolometers in experimental searches for double beta decay and dark matter. To evaluate the light collection efficiency of various geometrical configurations we used the ZEMAX ray-tracing software. It was found that scintillators in the shape of a triangular prism with an external mirror shaped as truncated cone gives the highest light collection efficiency. The results of the simulations were confirmed by carrying out measurements of the light collection efficiencies of CaWO4 crystal scintillators. A comparison of simulated and measured values of light output shows good agreement

  1. An analysis of the egg marketing practices of Texas producers

    E-Print Network [OSTI]

    Morgan, Quevedo Martin

    1949-01-01T23:59:59.000Z

    ~". as ~1 Fulfill. ~sat of th Rsq'Lt. o:~a for tbs De~ . f !baster of Sa:tense . 'h?'or 3xb, foot g Agx &scltural Eoonom9 es a DIG "i'd% J J U ~ ~ ~ t ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ % ~ ~ 4 ~ ~ ~ ~ ~ ~ ~ I? TAO '($Q~Q EBC4pp&o I '. M ~ ~ ~ ~ ~ ~ ~ ~ ~ e e... to PK' oaso? i PQQooa of thc De YA?Mt of ~g ' 8" ~t'vQ . 'c- ace', Sociolo g o" Tho 'gr 'eslt'a el anQ:@chaw cal Col'. - o of' Tc . . a C". r . 'A advice:ed hola 'a tho comtzeet;oa . " this vmacrl 4, ". . ". obt oi' matitmke "'" "~wo ~7m, 'rofc;, sor...

  2. Humidity-resistant ambient-temperature solid-electrolyte amperometric sensing apparatus

    DOE Patents [OSTI]

    Zaromb, S.

    1994-06-21T23:59:59.000Z

    Apparatus and methods for detecting selected chemical compounds in air or other gas streams at room or ambient temperature includes a liquid-free humidity-resistant amperometric sensor comprising a sensing electrode and a counter and reference electrode separated by a solid electrolyte. The sensing electrode preferably contains a noble metal, such as Pt black. The electrolyte is water-free, non-hygroscopic, and substantially water-insoluble, and has a room temperature ionic conductivity [>=]10[sup [minus]4] (ohm-cm)[sup [minus]1], and preferably [>=]0.01 (ohm-cm)[sup [minus]1]. The conductivity may be due predominantly to Ag[sup +] ions, as in Ag[sub 2]WO[sub 4], or to F[sup [minus

  3. Further fractionation studies on unidentified growth factors in distillers dried solubles

    E-Print Network [OSTI]

    Rozacky, Eugene Emil

    1955-01-01T23:59:59.000Z

    J. ?ro:&th f:&c oro. 'ev. ". ~1 labor. tor. i. ;. . ucv", utt . n?te. ' to 1. &cia:. o &'J m g' a ?. , uniko'&. '1 & iel "r3, i & f ' 0 "o . . r . & & n & ural eources ~ '&ovM . ZQ1 . Iau;9, . -'3) le . c &. '3, ? ' t 1e;r3 &9rt &. oo?f & f 3 'tor 1... "txzul . . te I '. : ?oro h of calo'wo Ci. N'' '. ' " ucott ( p r) o . . - ve ' Lh t orotic . cid lro. . ;c. e' chick -" i&. . &to in the ?'re. ence of:. .d ed aethio ine. ". wha, ua1 . :l . u e ( ' ) ro- : o'tod a ?o . "ibl: rcl:it ienahit& oi o-. ot...

  4. Light Dark Matter in the light of CRESST-II

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Kopp, Joachim; Schwetz, Thomas; Zupan, Jure

    2012-03-01T23:59:59.000Z

    Recently the CRESST collaboration has published the long anticipated results of their direct Dark Matter (DM) detection experiment with a CaWO4 target. The number of observed events exceeds known backgrounds at more than 4? significance, and this excess could potentially be due to DM scattering. We confront this interpretation with null results from other direct detection experiments for a number of theoretical models, and find that consistency is achieved in non-minimal models such as inelastic DM and isospin-violating DM. In both cases mild tension with constraints remain. The CRESST data can, however, not be reconciled with the null results and with the positive signals from DAMA and CoGeNT simultaneously in any of the models we study.

  5. Systems and methods for detecting x-rays

    DOE Patents [OSTI]

    Bross, Alan D.; Mellott, Kerry L.; Pla-Dalmau, Anna

    2006-05-02T23:59:59.000Z

    Systems and methods for detecting x-rays are disclosed herein. One or more x-ray-sensitive scintillators can be configured from a plurality of heavy element nano-sized particles and a plastic material, such as polystyrene. As will be explained in greater detail herein, the heavy element nano-sized particles (e.g., PbWO4) can be compounded into the plastic material with at least one dopant that permits the plastic material to scintillate. X-rays interact with the heavy element nano-sized particles to produce electrons that can deposit energy in the x-ray sensitive scintillator, which in turn can produce light.

  6. Hydrocracking and hydroisomerization of long-chain alkanes and polyolefins over metal-promoted anion-modified transition metal oxides

    SciTech Connect (OSTI)

    Venkatesh, Koppampatti R.; Hu, Jianli; Tierney, John W.; Wender, Irving

    1996-12-01T23:59:59.000Z

    A method is described for cracking a feedstock by contacting the feedstock with a metal-promoted anion-modified metal oxide catalyst in the presence of hydrogen gas. The metal oxide of the catalyst is one or more of ZrO{sub 2}, HfO{sub 2}, TiO{sub 2} and SnO{sub 2}, and the feedstock is principally chains of at least 20 carbon atoms. The metal-promoted anion-modified metal oxide catalyst contains one or more of Pt, Ni, Pd, Rh, Ir, Ru, (Mn and Fe) or mixtures of them present between about 0.2% to about 15% by weight of the catalyst. The metal-promoted anion-modified metal oxide catalyst contains one or more of SO{sub 4}, WO{sub 3}, or mixtures of them present between about 0.5% to about 20% by weight of the catalyst.

  7. Nepali Aawaz Volume 1, Issue 5, 23 November - 6 December 2005

    E-Print Network [OSTI]

    Shrestha, Kashish Das

    . bIf hgzlQm pTkfbg ug]{ xf] eg] xªsªdf t'?Gt} Ps nfv g]kfnL dlxnfn] sfd kfpg ;Sg] l:ylt /x]sf] cf]e/l;h g]lKnh ODKnf]Od]G6 P;f]l;P;g xªsªsf cWoIf uf]ljGb ;'Aaf atfpg'x'G5 . pxfF eGg'x'G5, æg]kfnL dlxnf sfdbf/sf] dfu xªsªdf 7"nf] 5, t/ ;fdfGo ;Lk... . The under- standing was reached in “haste" without consulting other 130 political parties and the government. The King would have no problem to go for Constituent Assembly election if “all political parties" demanded so. The government may take legal...

  8. The effect of GnRH on induction of follicular development and ovulation in anovulatory and ovulatory mares

    E-Print Network [OSTI]

    Hennington, Debra Louise

    1981-01-01T23:59:59.000Z

    6u[ge[nwt. gs uoy ajit. goagga qou si ynq saioads uaqqo po sa[ewag pue sauew ui uo[ge[nno age[nw[gs og g[asg[ Eq pasn uaaq os [e seq u[douq. opeuo5 o iuoiuouo uewnH asn s|. I 5u[wo[[og. unsoo uaq. go [[LM suo[ge[ -nno a[d[g[nw hei]g si goezq. xa... [iu[onpau iq Eouafoigga bu[paauq panoudwf u[douqopeuob otuoluoqo uewnH 'sauew oi[oEo ui uofqe[nno bufqe[enwfqs uog antqoayga X[46[4 si 004 'uanazoH 'sauew ue[no[L[og age[nwigs og sqdwagqe snouawnu aqua oq uoigippe u[ HLIug qgce sasuoq u( uocge...

  9. Optics and materials research for controlled radiant energy transfer in buildings

    SciTech Connect (OSTI)

    Goldner, R.D.; Haas, T.E.

    1991-01-01T23:59:59.000Z

    Activities to develop thin film variable reflectivity electrochromic windows have focused in five areas in 1991: (1) evaluating the irreversible incorporation of lithium in the counterelectrode material, sputtered indium oxide; (2) responding to evidence that protons substitute for mobile lithium ions in standard'' five-layer electrochromic window structures operating in room air; (3) understanding the electronic and ionic conduction mechanisms in sputtered amorphous lithium niobate, the ion conductor adopted for electrochromic window structures fabricated at Tufts; (4) responding to the discovery that cathodic coloring of the variable reflecting tungsten bronze (Li{sub x}WO{sub 3}) is constrained by interaction with the underlying ITO or SnO{sub 2} transparent conductor in conventional electrochromic window structures; and (5) life testing of electrochromic window prototypes.

  10. Optics and materials research for controlled radiant energy transfer in buildings. Annual project status report, January 1, 1991--December 31, 1991

    SciTech Connect (OSTI)

    Goldner, R.D.; Haas, T.E.

    1991-12-31T23:59:59.000Z

    Activities to develop thin film variable reflectivity electrochromic windows have focused in five areas in 1991: (1) evaluating the irreversible incorporation of lithium in the counterelectrode material, sputtered indium oxide; (2) responding to evidence that protons substitute for mobile lithium ions in ``standard`` five-layer electrochromic window structures operating in room air; (3) understanding the electronic and ionic conduction mechanisms in sputtered amorphous lithium niobate, the ion conductor adopted for electrochromic window structures fabricated at Tufts; (4) responding to the discovery that cathodic coloring of the variable reflecting tungsten bronze (Li{sub x}WO{sub 3}) is constrained by interaction with the underlying ITO or SnO{sub 2} transparent conductor in conventional electrochromic window structures; and (5) life testing of electrochromic window prototypes.

  11. The solution growth route and characterization of electrochromic tungsten oxide thin films

    SciTech Connect (OSTI)

    Todorovski, Toni [Institute of Chemistry, Faculty of Natural Sciences and Mathematics, Sts. Cyril and Methodius University, PO Box 162, Arhimedova 5, 1000 Skopje (Macedonia, The Former Yugoslav Republic of); Najdoski, Metodija [Institute of Chemistry, Faculty of Natural Sciences and Mathematics, Sts. Cyril and Methodius University, PO Box 162, Arhimedova 5, 1000 Skopje (Macedonia, The Former Yugoslav Republic of)], E-mail: metonajd@iunona.pmf.ukim.edu.mk

    2007-12-04T23:59:59.000Z

    Electrochromic tungsten oxide thin films were prepared by using an aqueous solution of Na{sub 2}WO{sub 4}.2H{sub 2}O and dimethyl sulfate. Various techniques were used for the characterization of the films such as X-ray diffraction, cyclic voltammetry, SEM analysis and VIS-spectroscopy. The thin film durability was tested in an aqueous solution of LiClO{sub 4} (0.1 mol/dm{sup 3}) for about 7000 cycles followed by cyclic voltammetry. No significant changes in the cyclic voltammograms were found, thus proving the high durability of the films. The optical transmittance spectra of coloured and bleached states showed significant change in the transmittance, which makes these films favorable for electrochromic devices.

  12. Application of a rapid graphical method for the design of electrochromic devices

    SciTech Connect (OSTI)

    Bullock, J.N.; Branz, H.M. [National Renewable Energy Lab., Golden, CO (United States)

    1995-12-31T23:59:59.000Z

    Recently, Rauh and Cogan presented a model for the thermodynamic equilibrium optical and electrical properties of electrochromic optical modulation devices. Such as empirically based, predictive model is very useful in the engineering design of practical electrochromic devices. The existing model, however, requires considerable computation to model the effects of changes in important device parameters such as layer thicknesses and total mobile ion charge. The authors present a simple, graphical technique for evaluating the equilibrium electrochemical interaction of two electrochromic layers at any applied voltage based on independent, empirical, back-EMF measurements of the materials. The technique allows extremely rapid evaluation of different candidate materials, layer thicknesses and total ion charges. They present the results of the model for a Li-based electrochromic devices employing WO and VO layers with an emphasis on design for low coloration voltage.

  13. Sol-gel deposited electrochromic coatings

    SciTech Connect (OSTI)

    Ozer, N.; Lampert, C.M.

    1995-06-01T23:59:59.000Z

    Electrochromic devices have increasing application in display devices, switchable mirrors and smart windows. A variety of vacuum deposition technologies have been used to make electrochromic devices. The sol- gel process offers an alternative approach to the synthesis of optical quality and low cost electrochromic device layers. This study summarizes the developments in sol-gel deposited electrochromic films. The sol-gel process involves the formation of oxide networks upon hydrolysis-condensation of alkoxide precursors. In this study we cover the sol-gel deposited oxides of WO[sub 3], V[sub 2]O[sub 5], TiO[sub 2], Nb[sub 2]O[sub 5], and NiO[sub x].

  14. How We Achieved a 41% Energy Reduction

    E-Print Network [OSTI]

    Maze, M. E.

    in this pape~. Abbott Labo~ato~ies is a wo~ldwide health ca~e company with 1984 sales in excess of $3.1 billion. Abbott employs some 34,000 people in 28 domestic and 44 inte~ational locations. ou~ ene~gy conse~vation p~og~am was sta~ted in 1973 du...~ing the A~ab oil emba~go, but the ene~gy conse~vation depa~tment was not fo~ed until 1977. This depa~tment consists of myself, 2 enginee~s, and a sec~eta~y, and we a~e the only people in the company devoting full time to ene~gy conse~vation. Each plant...

  15. Edge-states ferromagnetism of WS{sub 2} nanosheets

    SciTech Connect (OSTI)

    Huo, Nengjie; Li, Yan; Kang, Jun; Li, Renxiong; Xia, Qinglin; Li, Jingbo, E-mail: jbli@semi.ac.cn [State Key Laboratory for Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, P. O. Box 912, Beijing 100083 (China)

    2014-05-19T23:59:59.000Z

    The multilayer WS{sub 2} nanosheets prepared from WO{sub 3} nanowires exhibit strong ferromagnetic behavior with saturation magnetization (M{sub S}) of 0.0058?emu/g and coercive field (H{sub C}) of 92?Oe at room temperature. By decreasing the temperature down to 3?K the H{sub c} is increased up to 1115 Oe, revealing the existence of long-range magnetic ordering. Density functional theory spin-polarized calculations predict that strong ferromagnetic moments in WS{sub 2} nanosheets are attributed to the zigzag edge sulphur S and tungsten W atoms. Our findings also suggest that the WS{sub 2} nanosheets with a high density of edge spins could be used to fabricate spintronics devices, which are circuits utilizing the spin of the electron to process and store information.

  16. Array-type NH.sub.3 sensor

    DOE Patents [OSTI]

    West, David Lawrence; Montgomery, Frederick Charles; Armstrong, Timothy R; Warmack, Robert J

    2013-12-31T23:59:59.000Z

    An array-type sensor that senses NH.sub.3 includes non-Nernstian sensing elements constructed from metal and/or metal-oxide electrodes on an O.sub.2 ion conducting substrate. In one example sensor, one electrode may be made of platinum, another electrode may be made of manganese (III) oxide (Mn.sub.2O.sub.3), and another electrode may be made of tungsten trioxide (WO.sub.3). Some sensing elements may further include an electrode made of La.sub.0.6Sr.sub.0.4Co.sub.0.2Fe.sub0.8O.sub.3 and another electrode made of LaCr.sub.0.95.Mg.sub.0.05O.sub.3.

  17. Negative Thermal Expansion in ZrW{sub 2}O{sub 8}: Mechanisms, Rigid Unit Modes, and Neutron Total Scattering

    SciTech Connect (OSTI)

    Tucker, Matthew G. [Department of Earth Sciences, University of Cambridge, Downing Street, Cambridge CB2 3EQ (United Kingdom); ISIS Facility, Rutherford Appleton Laboratory, Chilton, Didcot, Oxon OX11 0QX (United Kingdom); Goodwin, Andrew L.; Dove, Martin T. [Department of Earth Sciences, University of Cambridge, Downing Street, Cambridge CB2 3EQ (United Kingdom); Keen, David A. [Physics Department, Oxford University, Clarendon Laboratory, Parks Road, Oxford OX1 3PU (United Kingdom); ISIS Facility, Rutherford Appleton Laboratory, Chilton, Didcot, Oxon OX11 0QX (United Kingdom); Wells, Stephen A. [Biological Physics, Bateman Physical Sciences Building, Arizona State University, Tempe, Arizona 85287-1504 (United States); Evans, John S.O. [Department of Chemistry, University Science Laboratories, South Road, Durham DH1 3LE (United Kingdom)

    2005-12-16T23:59:59.000Z

    The local structure of the low-temperature ordered phase of the negative thermal expansion (NTE) material ZrW{sub 2}O{sub 8} has been investigated by reverse Monte Carlo (RMC) modeling of neutron total scattering data. We obtain, for the first time, quantitative measurements of the extent to which the WO{sub 4} and ZrO{sub 6} polyhedra move as rigid units, and we show that these values are consistent with the predictions of rigid unit mode theory. We suggest that rigid unit modes are associated with the NTE. Our results do not support a recent interpretation of x-ray-absorption fine structure spectroscopy data in terms of a larger rigid structural component involving the Zr-O-W linkage.

  18. Upgrading of middle distillate fractions of syncrudes from athabasca oil sands

    SciTech Connect (OSTI)

    Wilson, M.F.; Kriz, J.F.

    1983-03-01T23:59:59.000Z

    Middle distillate fractions of syncrudes from Athabasca Oil Sands were evaluated for suitability as feedstocks in the catalytic conversion to diesel fuel meeting cetane number specifications. Hydrogenation of aromatic components to napthenes under severe conditions (380 to 400/sup 0/C, 2500 psig) using sulfided CoO/MoO/sub 3/ and NiO/WO/sub 3/ over ..cap alpha.. . Al/sub 2/O/sub 3/ in a previously described catalyst testing system. Reaction products were analyzed for aromatic carbon content using C/sup 13/ NMR spectroscopy and pseudo first order rate constants and activation energies (15.0 and 14.2 kcal 1 g-mole, respectively) were determined by regression analysis. At optimum conditions 97% aromatic conversion was obtained with the Ni-W catalyst. Product diesel fuel cetane number (42) was within specifications. Co-Mo catalyst was significantly less active.

  19. One-photon band gap engineering of borate glass doped with ZnO for photonics applications

    SciTech Connect (OSTI)

    Abdel-Baki, Manal [Glass Department, National Research Centre, Dokki 12311 Giza (Egypt); Abdel-Wahab, Fathy A.; El-Diasty, Fouad [Physics Department, Faculty of Science, Ain Shams University, Abbasia, 11566 Cairo (Egypt)

    2012-04-01T23:59:59.000Z

    Lithium tungsten borate glass of the composition (0.56-x)B{sub 2}O{sub 3}-0.4Li{sub 2}O-xZnO-0.04WO{sub 3} (0 {<=}x{<=} 0.1 mol. %) is prepared for photonics applications. The glass is doped with ZnO to tune the glass absorption characteristics in a wide spectrum range (200-2500 nm). Chemical bond approach, including chemical structure, electronegativity, bond ionicity, nearest-neighbor coordination, and other chemical bonding aspect, is used to analyze and to explain the obtained glass properties such as: transmittance, absorption, electronic structure parameters (bandgap, Fermi level, and Urbach exciton-phonon coupling), Wannier free excitons excitation (applying Elliott's model), and two-photon absorption coefficient as a result of replacement of B{sub 2}O{sub 3} by ZnO.

  20. The use of fishes in cages as biological monitors of the quality of water passing through a power plant

    E-Print Network [OSTI]

    Hammerschmidt, Paul C

    1973-01-01T23:59:59.000Z

    I I I \\ I 'I I I I I I 0 0 0 0 0 0 CC 0 Cl CCI (Wc!c() AXO O 3A1OSSIO CI (0 0 0 0 0 0 0 lO CC CO CC Cl QQI ~ WO/SOIIW Rrl(l!JOOQICOO 0 Ol O CO ICc 4 CC O 0 (O ) 3((!!lV83 W3j 0 R Cl W CI CC o I- Ch C' SO 4 IO 8 0 8...? O EU 8 () CC) CO IO '0 ( I 4 C) g (3 2 o CO (3 4 -~ G CO S) It) O (OI 4 0 (3 IO 4 p, I I 27 o a ao o o 0 0 0 0 0 0 0 0 0 a\\ I N ( WVH) ( N30AXO 03A105510 0 0 0 0 0 0 'O N 0 V 1V /SOHWN AAIAIAPOON00 0 N 000 I I I...

  1. The level of serum protein-bound iodine, its repeatability and relationship to rate of gain in immature beef cattle

    E-Print Network [OSTI]

    Green, George G.

    1958-01-01T23:59:59.000Z

    $dok*'h*df' fw0 Kxkufwokf' tl''x$x lm Wxyfs ow ;fdhof' m*'mo'',xwh lm hux dx\\*odx,xwh mld hux 0x$dxx lm SOtWOA Oa NrLcOMONre n*$*shi >?R? Kf3ld M*H3xkhs nDLKnc DCWALWLOD WrE cE.Ec Oa MEACK NAOWELDGTOCDS LOSLDEi LWM AENEnWnTLcLWe nDS AEcnWLODMrLN WO AnWE Oa... pnLD LD LKKnWCAE TEEa tnWWcE n Sossxdhfholw Tg pEOApE p: pAEED n;;dlJx0 fs hl shg'x fw0 klwhxwh HgP ?tufod,fw lm tl,,ohhxxV ?rxf0 lm Sx;fdh,xwhV n*$*shi >?R? ACKNOWLEDGMENTS Sincere appreciation is expressed to the following: Dr* H, 0 o Kunke...

  2. Direct Dark Matter Search with the CRESST-II Experiment

    E-Print Network [OSTI]

    ,

    2015-01-01T23:59:59.000Z

    The quest for the particle nature of dark matter is one of the big open questions of modern physics. The CRESST-II experiment, located at the Gran Sasso laboratory in Italy, is optimised for the detection of the elastic scattering of dark matter particles with ordinary matter. We present the result obtained with an improved detector setup with increased radiopurity and enhanced background rejection. The limit obtained in the so-called low mass region between one and three GeV/c2 is at the present among the best limits obtained for direct dark matter experiments. In addition we give an outlook of the future potential for direct dark matter detection using further improved CRESST CaWO4 cryogenic detectors.

  3. The ROSEBUD experiment at Canfranc: 2001 report

    E-Print Network [OSTI]

    S. Cebrian; N. Coron; G. Dambier; E. Garcia; I. G. Irastorza; J. Leblanc; P. de Marcillac; A. Morales; J. Morales; A. Ortiz de Solorzano; J. Puimedon; M. L. Sarsa; J. A. Villar

    2002-01-03T23:59:59.000Z

    The ROSEBUD experiment for Direct Dark Matter detection settled in 1999 in the Canfranc Underground Laboratory. The first phase of the experiment was dedicated to the understanding and reduction of the radioactive background following successive removals of the radioimpure materials. Sapphire (25g, 50g) and germanium (67g) absorbers were used. Thresholds respectively lower than 1keV and 450 eV were achieved on these detectors. The second phase of the experiment plans to use scintillating bolometers to discriminate between recoiling nuclei and electrons. Prototypes using commercial CaWO4 (54g) and BGO (46g) were designed for this purpose. While internal contamination was found and identified in both targets, neutron calibrations revealed their high discrimination power. A 6 keV threshold on the heat channel of the BGO bolometer points out the interest of such a novel material, for Dark Matter research on neutralinos having spin-dependent or spin-independent interactions.

  4. Tantalum-Tungsten Oxide Thermite Composite Prepared by Sol-Gel Synthesis and Spark Plasma Sintering

    SciTech Connect (OSTI)

    Cervantes, O; Kuntz, J; Gash, A; Munir, Z

    2009-02-13T23:59:59.000Z

    Energetic composite powders consisting of sol-gel derived nanostructured tungsten oxide were produced with various amounts of micrometer-scale tantalum fuel metal. Such energetic composite powders were ignition tested and results show that the powders are not sensitive to friction, spark and/or impact ignition. Initial consolidation experiments, using the High Pressure Spark Plasma Sintering (HPSPS) technique, on the sol-gel derived nanostructured tungsten oxide produced samples with higher relative density than can be achieved with commercially available tungsten oxide. The sol-gel derived nanostructured tungsten oxide with immobilized tantalum fuel metal (Ta - WO{sub 3}) energetic composite was consolidated to a density of 9.17 g.cm{sup -3} or 93% relative density. In addition those parts were consolidated without significant pre-reaction of the constituents, thus the sample retained its stored chemical energy.

  5. Effect of storage temperature on the quality of vacuum packed pecans

    E-Print Network [OSTI]

    Ahmed, Husain Salem Sayed

    1967-01-01T23:59:59.000Z

    I3 VI O O c (iD I-3 O 0 Vi H H H O O 0 O I' p GD 26 1. 80 1. 70 Wo l. 60 0 a$ 50 1. 40 l. $0 9 12 15 Days Fig. 6. ~osing samples, brought out of storage to different periods at room tempera- ture. 27 TABLE IV EFFECT...D ID et 0 (D 0 M ct ~ ID n 0 8 0' I ID V 0 0 CD V V! r V' n XII V (D (D S V P (D I (D I V n V 0 V (D C CfI (D dI 0 V ~II 0 I 0 I ' 5 n I Vf CP C C IV V V CD IV 0 CD (9 O & VI IO IV fV C % C CP 0 fV V I CD 0...

  6. Use of electrochromic materials in adaptive optics.

    SciTech Connect (OSTI)

    Kammler, Daniel R.; Sweatt, William C.; Verley, Jason C.; Yelton, William Graham

    2005-07-01T23:59:59.000Z

    Electrochromic (EC) materials are used in 'smart' windows that can be darkened by applying a voltage across an EC stack on the window. The associated change in refractive index (n) in the EC materials might allow their use in tunable or temperature-insensitive Fabry-Perot filters and transmissive-spatial-light-modulators (SLMs). The authors are conducting a preliminary evaluation of these materials in many applications, including target-in-the-loop systems. Data on tungsten oxide, WO{sub 3}, the workhorse EC material, indicate that it's possible to achieve modest changes in n with only slight increases in absorption between the visible and {approx}10 {micro}m. This might enable construction of a tunable Fabry-Perot filter consisting of an active EC layer (e.g. WO{sub 3}) and a proton conductor (e.g.Ta{sub 2}O{sub 5}) sandwiched between two gold electrodes. A SLM might be produced by replacing the gold with a transparent conductor (e.g. ITO). This SLM would allow broad-band operation like a micromirror array. Since it's a transmission element, simple optical designs like those in liquid-crystal systems would be possible. Our team has fabricated EC stacks and characterized their switching speed and optical properties (n, k). We plan to study the interplay between process parameters, film properties, and performance characteristics associated with the FP-filter and then extend what we learn to SLMs. Our goals are to understand whether the changes in absorption associated with changes in n are acceptable, and whether it's possible to design an EC-stack that's fast enough to be interesting. We'll present our preliminary findings regarding the potential viability of EC materials for target-in-the-loop applications.

  7. Electrochromic Devices Deposited on Low-Temperature Plastics by Plasma-Enhanced Chemical Vapor Deposition

    SciTech Connect (OSTI)

    Robbins, Joshua; Seman, Michael

    2005-09-20T23:59:59.000Z

    Electrochromic windows have been identified by the Basic energy Sciences Advisory committee as an important technology for the reduction of energy spent on heating and cooling in residential and commercial buildings. Electrochromic devices have the ability to reversibly alter their optical properties in response to a small electric field. By blocking ultraviolet and infrared radiation, while modulating the incoming visible radiation, electrochromics could reduce energy consumption by several Quads per year. This amounts to several percent of the total annual national energy expenditures. The purpose of this project was to demonstrate proof of concept for using plasma-enhanced chemical vapor deposition (PECVD) for depositing all five layers necessary for full electrochromic devices, as an alternative to sputtering techniques. The overall goal is to produce electrochromic devices on flexible polymer substrates using PECVD to significantly reduce the cost of the final product. We have successfully deposited all of the films necessary for a complete electrochromic devices using PECVD. The electrochromic layer, WO3, displayed excellent change in visible transmission with good switching times. The storage layer, V2O5, exhibited a high storage capacity and good clear state transmission. The electrolyte, Ta2O5, was shown to functional with good electrical resistivity to go along with the ability to transfer Li ions. There were issues with leakage over larger areas, which can be address with further process development. We developed a process to deposit ZnO:Ga with a sheet resistance of < 50 W/sq. with > 90% transmission. Although we were not able to deposit on polymers due to the temperatures required in combination with the inverted position of our substrates. Two types of full devices were produced. Devices with Ta2O5 were shown to be functional using small aluminum dots as the top contact. The polymer electrolyte devices were shown to have a clear state transmission of 69% and a darkened state transmission 11%. These un-optimized devices compared well with commercially available products, which have a stated clear transmission of 59% and dark transmission of 4%. The PECVD oxides have displayed advantages over films produced by sputtering. The first advantage is that deposition rates were significantly higher than typical sputtering rates. Rates of 100 nm/min were achieved for WO3, and rates of 50 nm/min produced quality V2O5 and Ta2O5 films. Faster rates will produce a significant reduction in cost due to higher throughput. Another advantage was that films were less dense than those produced by sputtering as reported in the literature. This leads to high diffusion coefficients and fast switching times. Also less dense films have been shown to produce larger contrast ratios in WO3 and larger storage capacity in V2O5. From the data collected in this category 1 project we have shown that PECVD is feasible and beneficial for the deposition of working layers for electrochromic devices. These results and the lessons learned can be applied toward deposition on polymers and equipment scale-up in future work.

  8. Production of hydrogen in non oxygen-evolving systems: co-produced hydrogen as a bonus in the photodegradation of organic pollutants and hydrogen sulfide

    SciTech Connect (OSTI)

    Sartoretti, C. Jorand; Ulmann, M.; Augustynski, J. (Electrochemistry Laboratory, Department of Chemistry, University of Geneva (CH)); Linkous, C.A. (Florida Solar Energy Center, University of Central Florida (US))

    2000-01-01T23:59:59.000Z

    This report was prepared as part of the documentation of Annex 10 (Photoproduction of Hydrogen) of the IEA Hydrogen Agreement. Subtask A of this Annex concerned photo-electrochemical hydrogen production, with an emphasis on direct water splitting. However, studies of non oxygen-evolving systems were also included in view of their interesting potential for combined hydrogen production and waste degradation. Annex 10 was operative from 1 March 1995 until 1 October 1998. One of the collaborative projects involved scientists from the Universities of Geneva and Bern, and the Federal Institute of Technology in Laussane, Switzerland. A device consisting of a photoelectrochemical cell (PEC) with a WO{sub 3} photoanode connected in series with a so-called Grazel cell (a dye sensitized liquid junction photovoltaic cell) was developed and studied in this project. Part of these studies concerned the combination of hydrogen production with degradation of organic pollutants, as described in Chapter 3 of this report. For completeness, a review of the state of the art of organic waste treatment is included in Chapter 2. Most of the work at the University of Geneva, under the supervision of Prof. J. Augustynski, was focused on the development and testing of efficient WO{sub 3} photoanodes for the photoelectrochemical degradation of organic waste solutions. Two types of WO{sub 3} anodes were developed: non transparent bulk photoanodes and non-particle-based transparent film photoanodes. Both types were tested for degradation and proved to be very efficient in dilute solutions. For instance, a solar-to-chemical energy conversion efficiency of 9% was obtained by operating the device in a 0.01M solution of methanol (as compared to about 4% obtained for direct water splitting with the same device). These organic compounds are oxidized to CO{sub 2} by the photocurrent produced by the photoanode. The advantages of this procedure over conventional electrolytic degradation are that much (an order of magnitude) less energy is required and that sunlight can be used directly. In the case of photoproduction of hydrogen, as compared to water splitting, feeding the anodic compartment of the PEC with an organic pollutant, instead of the usual supporting electrolyte, will bring about a substantial increase of the photocurrent at a given illumination. Thus, the replacement of the photo-oxidation of water by the photodegradation of organic waste will be accompanied by a gain in solar-to-chemical conversion efficiency and hence by a decrease in the cost of the photoproduced hydrogen. Taking into account the benefits and possible revenues obtainable by the waste degradation, this would seem to be a promising approach to the photoproduction of hydrogen. Hydrogen sulfide (H{sub 2}S) is another waste effluent requiring extensive treatment, especially in petroleum refineries. The so-called Claus process is normally used to convert the H{sub 2}S to elemental sulfur. A sulfur recovery process developed at the Florida Solar Energy Center is described briefly in Chapter 4 by Dr. C. Linkous as a typical example of the photoproduction of hydrogen in a non oxygen-evolving system. The encouraging results obtained in these investigations of photoelectrochemical hydrogen production combined with organic waste degradation, have prompted a decision to continue the work under the new IEA Hydrogen Agreement Annex 14, Photoelectrolytic Hydrogen Production.

  9. Distributed Fiber Optic Gas Sensing for Harsh Environment

    SciTech Connect (OSTI)

    Juntao Wu

    2008-03-14T23:59:59.000Z

    This report summarizes work to develop a novel distributed fiber-optic micro-sensor that is capable of detecting common fossil fuel gases in harsh environments. During the 32-month research and development (R&D) program, GE Global Research successfully synthesized sensing materials using two techniques: sol-gel based fiber surface coating and magnetron sputtering based fiber micro-sensor integration. Palladium nanocrystalline embedded silica matrix material (nc-Pd/Silica), nanocrystalline palladium oxides (nc-PdO{sub x}) and palladium alloy (nc-PdAuN{sub 1}), and nanocrystalline tungsten (nc-WO{sub x}) sensing materials were identified to have high sensitivity and selectivity to hydrogen; while the palladium doped and un-doped nanocrystalline tin oxide (nc-PdSnO{sub 2} and nc-SnO{sub 2}) materials were verified to have high sensitivity and selectivity to carbon monoxide. The fiber micro-sensor comprises an apodized long-period grating in a single-mode fiber, and the fiber grating cladding surface was functionalized by above sensing materials with a typical thickness ranging from a few tens of nanometers to a few hundred nanometers. GE found that the morphologies of such sensing nanomaterials are either nanoparticle film or nanoporous film with a typical size distribution from 5-10 nanometers. nc-PdO{sub x} and alloy sensing materials were found to be highly sensitive to hydrogen gas within the temperature range from ambient to 150 C, while nc-Pd/Silica and nc-WO{sub x} sensing materials were found to be suitable to be operated from 150 C to 500 C for hydrogen gas detection. The palladium doped and un-doped nc-SnO{sub 2} materials also demonstrated sensitivity to carbon monoxide gas at approximately 500 C. The prototyped fiber gas sensing system developed in this R&D program is based on wavelength-division-multiplexing technology in which each fiber sensor is identified according to its transmission spectra features within the guiding mode and cladding modes. The interaction between the sensing material and fossil fuel gas results in a refractive index change and optical absorption in the sensing layer. This induces mode coupling strength and boundary conditions changes and thereby shifts the central wavelengths of the guiding mode and cladding modes propagation. GE's experiments demonstrated that such an interaction between the fossil fuel gas and sensing material not only shifts the central wavelengths of the guide mode and cladding modes propagation, but also alters their power loss characteristics. The integrated fiber gas sensing system includes multiple fiber gas sensors, fiber Bragg grating-based temperature sensors, fiber optical interrogator, and signal processing software.

  10. Assessment of Possible Cycle Lengths for Fully Encapsulated Microstructure fueled light water reactor Concepts

    SciTech Connect (OSTI)

    R. Sonat Sen; Michael A. Pope; Abderrafi M. Ougouag; Kemal O. Pasamehmetoglu

    2013-02-01T23:59:59.000Z

    The use of TRISO-particle-based dispersion fuel within SiC matrix and cladding materials has the potential to allow the design of extremely safe LWRs with failure-proof fuel. This paper examines the feasibility of LWR-like cycle length for such fuel with the imposed constraint of strictly retaining the original geometry of the fuel pins and assemblies. The motivation for retaining the original geometry is to provide the ability to incorporate the fuel “as-is” into existing LWRs while retaining their thermal–hydraulic characteristics. Another mandatory constraint is use of low enriched uranium (at or below 20 w/o). The feasibility of using this fuel is assessed by looking at two factors: cycle lengths and fuel material failure rates. Other considerations (e.g., safety parameters such as reactivity coefficients, feedback, etc.) were not considered at this stage of the study. The study includes the examination of increases in the TRISO kernel sizes without changing the thickness of any of the coating layers. In addition, cases where the buffer layer thickness is allowed to vary are also considered. The study shows that a naïve use of UO2 (even up to 20 w/o enrichment) results in cycle lengths too short to be practical for existing LWR designs and operational demands. Increasing fissile inventory within the fuel compacts shows that acceptable cycle lengths can be achieved. The increase of fissile inventory can be accomplished through multiple means, including higher particle packing fraction, higher enrichment, larger fuel kernel sizes, and the use of higher density fuels (that contain a higher number of U atoms per unit volume). In this study, starting with the recognized highest packing fraction practically achievable (44%), combinations of the other means have been evaluated. The models demonstrate cycle lengths comparable to those of ordinary LWRs. As expected, TRISO particles with extremely large kernels are shown to fail under all considered scenarios. In contrast, the designs that do not depart too drastically from those of the nominal NGNP HTR fuel TRISO particles are shown to perform satisfactorily and display a high rates of survival under all considered scenarios.

  11. A tunable electrochromic fabry-perot filter for adaptive optics applications.

    SciTech Connect (OSTI)

    Blaich, Jonathan David; Kammler, Daniel R.; Ambrosini, Andrea; Sweatt, William C.; Verley, Jason C.; Heller, Edwin J.; Yelton, William Graham

    2006-10-01T23:59:59.000Z

    The potential for electrochromic (EC) materials to be incorporated into a Fabry-Perot (FP) filter to allow modest amounts of tuning was evaluated by both experimental methods and modeling. A combination of chemical vapor deposition (CVD), physical vapor deposition (PVD), and electrochemical methods was used to produce an ECFP film stack consisting of an EC WO{sub 3}/Ta{sub 2}O{sub 5}/NiO{sub x}H{sub y} film stack (with indium-tin-oxide electrodes) sandwiched between two Si{sub 3}N{sub 4}/SiO{sub 2} dielectric reflector stacks. A process to produce a NiO{sub x}H{sub y} charge storage layer that freed the EC stack from dependence on atmospheric humidity and allowed construction of this complex EC-FP stack was developed. The refractive index (n) and extinction coefficient (k) for each layer in the EC-FP film stack was measured between 300 and 1700 nm. A prototype EC-FP filter was produced that had a transmission at 500 nm of 36%, and a FWHM of 10 nm. A general modeling approach that takes into account the desired pass band location, pass band width, required transmission and EC optical constants in order to estimate the maximum tuning from an EC-FP filter was developed. Modeling shows that minor thickness changes in the prototype stack developed in this project should yield a filter with a transmission at 600 nm of 33% and a FWHM of 9.6 nm, which could be tuned to 598 nm with a FWHM of 12.1 nm and a transmission of 16%. Additional modeling shows that if the EC WO{sub 3} absorption centers were optimized, then a shift from 600 nm to 598 nm could be made with a FWHM of 11.3 nm and a transmission of 20%. If (at 600 nm) the FWHM is decreased to 1 nm and transmission maintained at a reasonable level (e.g. 30%), only fractions of a nm of tuning would be possible with the film stack considered in this study. These tradeoffs may improve at other wavelengths or with EC materials different than those considered here. Finally, based on our limited investigation and material set, the severe absorption associated with the refractive index change suggests that incorporating EC materials into phase correcting spatial light modulators (SLMS) would allow for only negligible phase correction before transmission losses became too severe. However, we would like to emphasize that other EC materials may allow sufficient phase correction with limited absorption, which could make this approach attractive.

  12. Efficient ternary sources of working-body vapors for thermionic converters

    SciTech Connect (OSTI)

    Kalandarishvili, A.G.; Kashiya, V.G.

    1994-11-01T23:59:59.000Z

    The results of experiments to determine the energy characteristics of a cylindrical thermionic converter (TC) are presented. The TC investigated had ternary working-body vapor sources based on multicomponent cesium systems with either bismuth oxide, vanadium oxide, or tungsten oxide additions. Sorption characteristics of the systems were first determined, and then the ternary source was operated as part of the TC. The kinetics of the interaction of cesium vapor with the oxides was studied gravimetrically at various collector temperatures. The cesium TC electrical power output was increased 40 to 60% with a Cs{sub 12}Bi{sub 2}O{sub 3} ternary source in the arc mode. A Cs{sub 3}V{sub 2}O{sub 5} system increased TC output power from 20 to 40%, depending on emitter temperature. For the two Cs{sub x}WO{sub 3} sources examined, power increased almost 50%. The ternary sources examined also extended the working temperature range of the TC. 18 refs., 5 figs.

  13. Intern experience at Arkansas Nuclear One Steam Electric Station: an internship report 

    E-Print Network [OSTI]

    Miller, William Bruce, 1953-

    2013-03-13T23:59:59.000Z

    Mt)n Bt,F)6 #10 U)nUWFGoLf iFLaFn MF ot Gitt.F R)eU)FFWU)e O. Mf aWtdF..Ut)2 hU)OLLf6 Mf Mt.o .U)GFWF oiO)4. OWF FVaWF..Fn ot Mf ,UdF6 AOoWUGUO6 dtW iFW 2 .DaatWo O)n aOoUF)GF oiWtDeitDo Mf .oDnUF.6 O)n ot Mf MtoiFW6 (W.2 EitMO. I2 (ULLFW6 dtW iFW Gt)oU... K?? ?h 0 ?( CT t.? 1u39 u33 TuK?2 K?? A CI u03 1u38 K?? C7 u23 1u24 K?? 1u54 u51 CP??? ?? A ?? 100003 ?? ?V u25 1u33 1u26 u02 1u34 ?? u36 S? ????? X S? ?? ,F??? ?? ,D 1 H 2 3 k 5 6 7 ? 9 10 1 1 5 12 13 ? 12 h...

  14. Final Project Report

    SciTech Connect (OSTI)

    Zhang, Jin [University of California Santa Cruz; Zhao, Yiping [University of Georgia at Athens

    2014-12-05T23:59:59.000Z

    In this entire project period from 2005-2014, we have made significant progress in developing novel nanostructures of metal oxides (MOs) for solar hydrogen generation based on photoelectrochemical (PEC). Materials investigated are focused on 1D and 0D MO nanostructures of TiO2, WO3, ZnO, and Fe2O3 in conjunction with quantum dot (QD) sensitization and chemical doping (N or H) to alter their electronic band structures for both visible light absorption and for facilitating interfacial charge transport. In addition, we have used plasmonic metal nanostructures to enhance the PEC performance by improving light absorption of QDs via enhanced scattering of the plamonic metal. Most importantly, we have discovered a multipronged strategy for improving PEC performance: using plasmonic metal nanostructure to enhance light absorption, QDs to improve charge transfer, and chemical doping to increase charge transport in metal oxides for PEC. The combination is critical for overall high efficiency of PEC. This strategy is developed and demonstrated for the first time to our best knowledge.

  15. Sunlight-Driven Hydrogen Formation by Membrane-Supported Photoelectrochemical Water Splitting

    SciTech Connect (OSTI)

    Lewis, Nathan S. [California Institute of Technology] [California Institute of Technology

    2014-03-26T23:59:59.000Z

    This report describes the significant advances in the development of the polymer-supported photoelectrochemical water-splitting system that was proposed under DOE grant number DE-FG02-05ER15754. We developed Si microwire-array photoelectrodes, demonstrated control over the material and light-absorption properties of the microwire-array photoelectrodes, developed inexpensive processes for synthesizing the arrays, and doped the arrays p-type for use as photocathodes. We also developed techniques for depositing metal-nanoparticle catalysts of the hydrogen-evolution reaction (HER) on the wire arrays, investigated the stability and catalytic performance of the nanoparticles, and demonstrated that Ni-Mo alloys are promising earth-abundant catalysts of the HER. We also developed methods that allow reuse of the single-crystalline Si substrates used for microwire growth and methods of embedding the microwire photocathodes in plastic to enable large-scale processing and deployment of the technology. Furthermore we developed techniques for controlling the structure of WO3 films, and demonstrated that structural control can improve the quantum yield of photoanodes. Thus, by the conclusion of this project, we demonstrated significant advances in the development of all components of a sunlight-driven membrane-supported photoelectrochemical water-splitting system. This final report provides descriptions of some of the scientific accomplishments that were achieved under the support of this project and also provides references to the peer-reviewed publications that resulted from this effort.

  16. Blue diode-pumped solid-state-laser based on ytterbium doped laser crystals operating on the resonance zero-phonon transition

    DOE Patents [OSTI]

    Krupke, William F. (Pleasanton, CA); Payne, Stephen A. (Castro Valley, CA); Marshall, Christopher D. (Livermore, CA)

    2001-01-01T23:59:59.000Z

    The invention provides an efficient, compact means of generating blue laser light at a wavelength near .about.493+/-3 nm, based on the use of a laser diode-pumped Yb-doped laser crystal emitting on its zero phonon line (ZPL) resonance transition at a wavelength near .about.986+/-6 nm, whose fundamental infrared output radiation is harmonically doubled into the blue spectral region. The invention is applied to the excitation of biofluorescent dyes (in the .about.490-496 nm spectral region) utilized in flow cytometry, immunoassay, DNA sequencing, and other biofluorescence instruments. The preferred host crystals have strong ZPL fluorecence (laser) transitions lying in the spectral range from .about.980 to .about.992 nm (so that when frequency-doubled, they produce output radiation in the spectral range from 490 to 496 nm). Alternate preferred Yb doped tungstate crystals, such as Yb:KY(WO.sub.4).sub.2, may be configured to lase on the resonant ZPL transition near 981 nm (in lieu of the normal 1025 nm transition). The laser light is then doubled in the blue at 490.5 nm.

  17. Synthesis of Metal Oxide Nanomaterials for Chemical Sensors by Molecular Beam Epitaxy

    SciTech Connect (OSTI)

    Nandasiri, Manjula I.; Kuchibhatla, Satyanarayana V N T; Thevuthasan, Suntharampillai

    2013-12-01T23:59:59.000Z

    Since the industrial revolution, detection and monitoring of toxic matter, chemical wastes, and air pollutants has become an important environmental issue. Thus, it leads to the development of chemical sensors for various environmental applications. The recent disastrous oil spills over the near-surface of ocean due to the offshore drilling emphasize the use of chemical sensors for prevention and monitoring of the processes that might lead to these mishaps.1, 2 Chemical sensors operated on a simple principle that the sensing platform undergoes a detectable change when exposed to the target substance to be sensed. Among all the types of chemical sensors, solid state gas sensors have attracted a great deal of attention due to their advantages such as high sensitivity, greater selectivity, portability, high stability and low cost.3, 4 Especially, semiconducting metal oxides such as SnO2, TiO2, and WO3 have been widely used as the active sensing platforms in solid state gas sensors.5 For the enhanced properties of solid state gas sensors, finding new sensing materials or development of existing materials will be needed. Thus, nanostructured materials such as nanotubes,6-8 nanowires,9-11 nanorods,12-15 nanobelts,16, 17 and nano-scale thin films18-23 have been synthesized and studied for chemical sensing applications.

  18. Ultra-stable Molecule-Surface Architectures at Metal Oxides: Structure, Bonding, and Electron-transfer Processes

    SciTech Connect (OSTI)

    Hamers, Robert John

    2013-12-07T23:59:59.000Z

    Research funded by this project focused on the development of improved strategies for functionalization of metal oxides to enhance charge?transfer processes relevant to solar energy conversion. Initial studies included Fe2O3, WO3, TiO2, SnO2, and ZnO as model oxide systems; these systems were chosen due to differences in metal oxidation state and chemical bonding types in these oxides. Later studies focused largely on SnO2 and ZnO, as these materials show particularly promising surface chemistry, have high electron mobility, and can be readily grown in both spherical nanoparticles and as elongated nanorods. New molecules were synthesized that allowed the direct chemical assembly of novel nanoparticle ?dyadic? structures in which two different oxide materials are chemically joined, leading to an interface that enhances the separation of of charge upon illumination. We demonstrated that such junctions enhance photocatalytic efficiency using model organic compounds. A separate effort focused on novel approaches to linking dye molecules to SnO2 and ZnO as a way to enhance solar conversion efficiency. A novel type of surface binding through

  19. Preparation of amorphous electrochromic tungsten oxide and molybdenum oxide by plasma enhanced chemical vapor deposition

    SciTech Connect (OSTI)

    Tracy, C.E.; Benson, D.K.

    1986-09-01T23:59:59.000Z

    Preliminary experiments have been performed to probe the feasibility of using plasma enhanced chemical vapor deposition (PE--CVD) to prepare electrochromic thin films of tungsten oxide and molybdenum oxide by plasma reaction of WF/sub 6/, W(CO)/sub 6/, and Mo(CO)/sub 6/ with oxygen. Thin films produced in a 300 W, electrodeless, radio-frequency (rf), capacitive discharge were found to be electrochromic when tested with either liquid or solid electrolytes. Optical spectroscopy was performed on two electrochromic coatings after Li/sup +/ ion insertion from a propylene carbonate liquid electrolyte. Broad absorption peaks at --900 nm for WO/sub 3/ and 600 nm for MoO/sub 3/ were observed. Optical results for PE--CVD MoO/sub 3/ films differ from those reported for evaporated MoO/sub 3/ films which have an absorption peak at --800 nm. The shorter wavelength absorption in the PE--CVD MoO/sub 3/ films offers the potential for fabricating electrochromic devices with higher contrast ratios and less color change. Optical emission spectroscopy, Auger, and x-ray diffraction analyses indicate these thin film deposits to be predominantly amorphous tungsten and molybdenum oxides.

  20. Uranyl fluoride luminescence in acidic aqueous solutions

    SciTech Connect (OSTI)

    Beitz, J.V.; Williams, C.W. [Argonne National Lab., IL (United States). Chemistry Div.

    1996-08-01T23:59:59.000Z

    Luminescence emission spectra and decay rates are reported for uranyl species in acidic aqueous solutions containing HF or added NaF. The longest luminescence lifetime, 0.269 {+-} 0.006 ms, was observed from uranyl in 1 M HF + 1 M HClO{sub 4} at 296 K and decreased with increasing temperature. Based on a luminescence dynamics model that assumes equilibrium among electronically excited uranyl fluoride species and free fluoride ion, this long lived uranyl luminescence in aqueous solution is attributed primarily to UO{sub 2}F{sub 2}. Studies on the effect of added LiNO{sub 3} or Na{sub 2}WO{sub 4}{center_dot}2H{sub 2}O showed relatively weak quenching of uranyl fluoride luminescence which suggests that high sensitivity determination of the UF{sub 6} content of WF{sub 6} gas should be feasible via uranyl luminescence analysis of hydrolyzed gas samples of impure WF{sub 6}.

  1. Wireless sensor systems for sense/decide/act/communicate.

    SciTech Connect (OSTI)

    Berry, Nina M.; Cushner, Adam; Baker, James A.; Davis, Jesse Zehring; Stark, Douglas P.; Ko, Teresa H.; Kyker, Ronald D.; Stinnett, Regan White; Pate, Ronald C.; Van Dyke, Colin; Kyckelhahn, Brian

    2003-12-01T23:59:59.000Z

    After 9/11, the United States (U.S.) was suddenly pushed into challenging situations they could no longer ignore as simple spectators. The War on Terrorism (WoT) was suddenly ignited and no one knows when this war will end. While the government is exploring many existing and potential technologies, the area of wireless Sensor networks (WSN) has emerged as a foundation for establish future national security. Unlike other technologies, WSN could provide virtual presence capabilities needed for precision awareness and response in military, intelligence, and homeland security applications. The Advance Concept Group (ACG) vision of Sense/Decide/Act/Communicate (SDAC) sensor system is an instantiation of the WSN concept that takes a 'systems of systems' view. Each sensing nodes will exhibit the ability to: Sense the environment around them, Decide as a collective what the situation of their environment is, Act in an intelligent and coordinated manner in response to this situational determination, and Communicate their actions amongst each other and to a human command. This LDRD report provides a review of the research and development done to bring the SDAC vision closer to reality.

  2. Coyote-prey interactions on an intensively managed south Texas ranch

    E-Print Network [OSTI]

    Drew, Gary Scott

    1988-01-01T23:59:59.000Z

    )dwes paZqStaM asaqq po1Jad SUTydwes qoea uyqqtg sqeos qqS))' Jo gnaws J 0 Jo he/ Ug sg )'nsa J Su/8 elq Su): p1'oAe oq pasn 8 aM Suj gqS'1 aM & s 11U, ' Qe os aqq go ZqSTaM fiJp aqua fiq payTdyq~w seM waqt poop uancS e uo spy( Ucd go quaoJad atU. '(bfi6...Tgtquapy aJaM geosysqcc(od OO( go yeqcq 8 pue ued wo 9c x Sg e U( paqnqyJqsgp lyuafia pue paxyw a JaM sguaquoo geog '(fg6 [ uasueH pue uosuqof 'f96 t xoG pue peJweq)) awe Jg quyod uyd-pL e Sursn paugwexa 8 JaM sqeos go squaZuo) 'adfiq fiaJd 8) Suts 8 go...

  3. WR Populations in Starbursts: WN and WC Subtypes and the Role of Binaries

    E-Print Network [OSTI]

    Daniel Schaerer; William D. Vacca

    1996-09-28T23:59:59.000Z

    We present the first results of a new set of population synthesis models, which utilize the latest stellar evolutionary tracks, recent non-LTE atmosphere models which include stellar winds, and observed line strengths in WR spectra to predict the relative strengths of various WN and WC/WO emission features in the spectra of starburst galaxies. Our results will be used to derive accurate numbers of WN and WC stars in starburst galaxies. We also analyze the frequency and the WN and WC content of WR-rich galaxies in low metallicity samples; the theoretical predictions are found to be in good agreement with the observed frequencies. We also discuss the possible role of massive close binaries in starburst regions. If the starburst regions are formed in relatively instantaneous bursts we argue that, given their young age as derived from emission lines equivalent widths, (1) in the majority of the observed WR galaxies massive close binaries have not contributed significantly to the WR population, and (2) nebular HeII 4686 emission is very unlikely due to massive X-ray binaries.

  4. New Models for Wolf-Rayet and O Star Populations in Young Starbursts

    E-Print Network [OSTI]

    Daniel Schaerer; William D. Vacca

    1997-11-12T23:59:59.000Z

    Using the latest stellar evolution models, theoretical stellar spectra, and a compilation of observed emission line strengths from Wolf-Rayet (WR) stars, we construct evolutionary synthesis models for young starbursts. We explicitly distinguish between the various WR subtypes (WN, WC, WO), and we treat O and Of stars separately. We provide detailed predictions of UV and optical emission line strengths for both the WR stellar lines and the major nebular hydrogen and helium emission lines, as a function of several input parameters related to the starburst episode. We also derive the theoretical frequency of WR-rich starbursts. We then discuss: nebular HeII 4686 emission, the contribution of WR stars to broad Balmer line emission, techniques used to derive the WR and O star content from integrated spectra, and explore the implications of the formation of WR stars through mass transfer in close binary systems in instantaneous bursts. The observational features predicted by our models allow a detailed quantitative determination of the massive star population in a starburst region (particularly in so-called "WR galaxies") from its integrated spectrum and provide a means of deriving the burst properties (e.g., duration, age) and the parameters of the initial mass function of young starbursts. (Abridged abstract)

  5. Optical indices of lithiated electrochromic oxides

    SciTech Connect (OSTI)

    Rubin, M.; Rottkay, K. von; Wen, S.J.; Ozer, N.; Slack, J.

    1996-09-01T23:59:59.000Z

    Optical indices have been determined for thin films of several electrochromic oxide materials. One of the most important materials in electrochromic devices, WO{sub 3}, was thoroughly characterized for a range of electrochromic states by sequential injection of Li ions. Another promising material, Li{sub 0.5}Ni{sub 0.5}O, was also studied in detail. Less detailed results are presented for three other common lithium-intercalating electrochromic electrode materials: V{sub 2}O{sub 5}, LiCoO{sub 2}, and CeO{sub 2}-TiO{sub 2}. The films were grown by sputtering, pulsed laser deposition (PLD) and sol-gel techniques. Measurements were made using a combination of variable-angle spectroscopy ellipsometry and spectroradiometry. The optical constants were then extracted using physical and spectral models appropriate to each material. Optical indices of the underlying transparent conductors, determined in separate studies, were fixed in the models of this work. The optical models frequently agree well with independent physical measurements of film structure, particularly surface roughness by atomic force microscopy. Inhomogeneity due to surface roughness, gradient composition, and phase separation are common in both the transparent conductors and electrochromics, resulting sometimes in particularly complex models for these materials. Complete sets of data are presented over the entire solar spectrum for a range of colored states. This data is suitable for prediction of additional optical properties such as oblique transmittance and design of complete electrochromic devices.

  6. Tungsten oxide-Prussian blue electrochromic system based on a proton-conducting polymer electrolyte

    SciTech Connect (OSTI)

    Ho, K.C.; Rukavina, T.G.; Greenberg, C.B. (PPG Industries, Inc., Pittsburgh, PA (United States). Glass Technology Center)

    1994-08-01T23:59:59.000Z

    A new solid-state electrochromic system is presented. It is transparent and is comprised of a tungsten oxide and Prussian blue (PB) thin film couple in combination with a proton-conducting, solid polymer electrolyte. This electrochromic system exhibits rapid and deep optical switching; characteristics of a complementary configuration, both electrochromic films color and bleach in phase. Complementary electrochromic cells with the tungsten oxide-PB couple have previously been based on Li[sup +] or K[sup +]-conducting electrolytes. A repetitively cycling cell has not previously been reported with a proton-conducting solid polymer electrolyte. The devices were operated at low applied voltages, +1.2 V to darken and [minus]0.6 V to bleach. Repeated reduction and oxidation of the current system over 20,000 cycles has been demonstrated, indicating a large number of switchings without great degradation or irreversible side reactions. The sustained, high overall coloration efficiency of the devices suggests the insertion/extraction of protons into and out of both WO[sub 3] and PB films. The effects of cell size and operating temperature on the switching response are discussed.

  7. Amorphous Nb/Fe-oxide ion-storage films for counter electrode applications in electrochromic devices

    SciTech Connect (OSTI)

    Orel, B.; Macek, M.; Lavrencic-Stangar, U. [National Inst. of Chemistry, Ljubljana (Slovenia); Pihlar, B. [Univ. of Ljubljana (Slovenia). Faculty of Chemistry

    1998-05-01T23:59:59.000Z

    The electrochromic properties of mixed Nb/Fe-oxide films with amorphous structure which were prepared via the sol-gel route were determined. Films with Nb/Fe molar concentration ratios 0.2:1, 0.4:1, and 1:1 exhibit ion-storage capacities up to 18 mC/cm{sup 2} depending on Nb/Fe molar ratio. Electrochromically films behave as optically passive electrodes with a coloration efficiency of nearly zero at {lambda} > 480 nm, while at shorter wavelengths a relatively strong anodic coloring was observed, yielding negative coloration efficiencies up to {minus}20 cm{sup 2}/C. Coloring/bleaching changes of films are correlated with the ex situ IR spectroscopic measurements of charged/discharged films showing distortions of the film structure with Li{sup +} ion insertion/extraction reactions. Electrochemical stability of Nb/Fe (0.4:1)-oxide films was tested up to 2,000 cycles in a sol-gel electrochromic device consisting of sol-gel-derived WO{sub 3} films and hybrid organic/inorganic ionic conductor with ionic conductivity of about 10{sup {minus}4} S/cm serving for lamination of the electrodes.

  8. Superior catalysts for selective catalytic reduction of nitric oxide. Annual technical report, September 30, 1993--September 29, 1994

    SciTech Connect (OSTI)

    Chen, J.P.; Hausladen, M.C.; Yang, R.T.

    1995-03-01T23:59:59.000Z

    A delaminated Fe{sub 2}O{sub 3}-pillared clay catalyst was prepared for the selective catalytic reduction (SCR) of NO by NH{sub 3} at above 300{degrees}C. The delaminated pillard clay was characterized by ICP-AES (Inductively Coupled Plasma-Atomic Emission Spectroscopy) chemical analysis, XRD (X-ray diffraction) structure and line broadening analyses, micropore size probing, and Moessbauer analysis. These analyses showed that the catalyst contained fragmented Fe{sub 2}O{sub 3}-pillared clay forming {open_quotes}house-of-cards{close_quotes} structure with dispersed Fe{sub 2}O{sub 3} particles approximately 170 {angstrom} in size. The SCR activity of the delaminated pillard clay was higher than the commercial-type V{sub 2}O{sub 5} + WO{sub 3}/TiO{sub 2} catalyst, and also higher than the undelaminated pillard clay and supported Fe{sub 2}O{sub 3} catalysts, under conditions with SO{sub 2}. Infrared measurements of adsorbed NH{sub 3} showed strong Bronsted acidity which was caused possibly by interactions between Fe{sub 2}O{sub 3} and clay.

  9. Superior catalysts for selective catalytic reduction of nitric oxide. Quarterly technical progress report, 1 April--30 June 1994

    SciTech Connect (OSTI)

    Chen, J.P.; Li, W.B.; Hausladen, M.C.; Kikkinides, E.S.; Yang, R.T.

    1994-09-01T23:59:59.000Z

    In the last Quarterly Technical Progress Report the authors reported the synthesis and (partial characterization) and SCR (Selective Catalytic Reduction of NO) activity for a delaminated Fe{sub 2}O{sub 3}-pillared clay (Fe{sub 2}O{sub 3}-PILC). The SCR activity for this PILC was substantially higher than that of the commercial-type V{sub 2}O{sub 5} + WO{sub 3}/TiO{sub 2} catalyst. During the past quarter, the authors first completed the characterization of the delaminated Fe{sub 2}O{sub 3}-PILC catalyst. Both physical characterization (micropore probing by adsorption and Moessbauer spectroscopy) and chemical characterization (by IR spectroscopy) were performed. Since the synthesis of this PILC sample was undertaken under a specific set of conditions and it is known that the PILC properties depend strongly on the synthesis conditions, they then proceeded to examine in a systematic manner the dependence of the catalytic properties of the PILC on its synthesis conditions. Four parameters in the synthesis were studied: Fe precursors, pH of the pillaring solution, concentration of the pillaring solution, and the starting clay. Finally, the effect of the Cr{sub 2}O{sub 3} promoter on the SCR activity of the pillar clay was studied. Results are reported.

  10. Intrazeolite metal carbonyl phototopotaxy: From Tungsten(VI) oxide quantum dots to a zero-dimensional semiconductor quantum supralattice

    SciTech Connect (OSTI)

    Ozin, G.A.; Oezkar, S. (Univ. of Toronto, Ontario (Canada))

    1990-09-20T23:59:59.000Z

    Attention is focused on the use of simple binary metal carbonyls for the nucleation, growth, and stabilization of intrazeolite semiconductor quantum nanostructures. The rationale for selecting this particular group of precursor molecules relates to their volatility, molecular dimensions, ease of purification, availability, and facile and quantitative conversion to the respective metal oxide materials with minimal contamination by carbon. In this study the intrazeolite photooxidation chemistry of {alpha}-cage encapsulated hexacarbonyltungsten(0) in Na{sub 56}Y and H{sub 56}Y, n(W(CO){sub 6})-Na{sub 56}Y(H{sub 56}Y), with O{sub 2} provides a novel synthetic pathway to {alpha}-cage-located tungsten(VI) oxide n(WO{sub 3})-Na{sub 56}Y(H{sub 56}Y) intrazeolite quantum dots and a zero-dimensional semiconductor quantum supralattice (where n = 0-32), which might find applications as new solid-state materials for use in quantum electronic and nonlinear optic devices.

  11. Fabrication of nanostructure by physical vapor deposition with glancing angle deposition technique and its applications

    SciTech Connect (OSTI)

    Horprathum, M., E-mail: mati.horprathum@nectec.or.th; Eiamchai, P., E-mail: mati.horprathum@nectec.or.th; Patthanasettakul, V.; Limwichean, S.; Nuntawong, N.; Chindaudom, P. [Optical Thin-Film Laboratory National Electronics and Computer Technology Center, Pathumthani, 12120 (Thailand); Kaewkhao, J. [Center of Excellence in Glass Technology and Materials Science (CEGM), Nakhon Pathom Rajabhat University, Nakhon Pathom 73000 (Thailand); Chananonnawathorn, C. [Department of Physics, Faculty of Science and Technology, Thammasat University, Pathumthani, 12121 (Thailand)

    2014-09-25T23:59:59.000Z

    A nanostructural thin film is one of the highly exploiting research areas particularly in applications in sensor, photocatalytic, and solar-cell technologies. In the past two decades, the integration of glancing-angle deposition (GLAD) technique to physical vapor deposition (PVD) process has gained significant attention for well-controlled multidimensional nanomorphologies because of fast, simple, cost-effective, and mass-production capability. The performance and functional properties of the coated thin films generally depend upon their nanostructural compositions, i.e., large aspect ratio, controllable porosity, and shape. Such structural platforms make the fabricated thin films very practical for several realistic applications. We therefore present morphological and nanostructural properties of various deposited materials, which included metals, i.e., silver (Ag), and oxide compounds, i.e., tungsten oxide (WO{sub 3}), titanium dioxide (TiO{sub 2}), and indium tin oxide (ITO). Different PVD techniques based on DC magnetron sputtering and electron-beam evaporation, both with the integrated GLAD component, were discussed. We further explore engineered nanostructures which enable controls of optical, electrical, and mechanical properties. These improvements led to several practical applications in surface-enhanced Raman, smart windows, gas sensors, self-cleaning materials and transparent conductive oxides (TCO)

  12. Long-cycle-life solid-state solid-polymer electrolyte cells. Final report. Report on Phase 1

    SciTech Connect (OSTI)

    Sammells, A.F.; Semkow, K.W.; Cook, R.L.

    1986-07-01T23:59:59.000Z

    Experimental work was directed toward determining the viability of two complementary solid-state electrochemical cells incorporating Na/sup +/ and Li/sup +/ conducting solid polymer electrolytes (SPE). SPEs used included those based upon poly(ethylene oxide), poly(ethylene oxide)/poly(ethylene glycol) mixtures, and polyphosphazenes. For Li/sup +/ conducting SPEs, LixWO/sub 2/ was used for the negative and TiS/sub 2/ for the positive electrode. In cells utilizing Na+ conducting SPEs, homogeneous matrix electrodes based upon transition-metal-doped B'-alumina were used for the positive and negative electrodes. Here transition metals were incorporated into immobile A1/sup 3 +/ lattice sites within the B'-alumina structure, where changed in electrochemical potential upon cell charge/discharge cycling occurred via redox electrochemistry involving the doped immobile transition-metal species. Secondary cells were found to have respective open-circuit potentials of 2.2 and 1.5V, high electrochemical reversibility, and theoretical energy densities of 175 and 178 Wh/kg.

  13. IMPROVING THE USER EXPERIENCE OF THE LAWRENCE TRANSIT SYSTEM: A FOCUS ON MAP USABILITY AND ROUTE PLANNING

    E-Print Network [OSTI]

    Berkman, Eric

    2009-07-21T23:59:59.000Z

    No rth wo od Ln Co lor ad o S t W 3rd StB irc h L n Ca lifo rn ia St W 2nd Ter W 3rd St N Mi nn es ota St Flo rid a S t Quail Cr ee k D r Na ism ith D r Flo rid a S t Mi nn es ota St W 7th St Illi no is St Ala ba ma St Ma ine St Mi ss ou ri St... r d Ct Oxford Ct W 13th St Jana Ct Eisenhower Pl Yo rks hir e D rB o n d Pl Sundown Ct Riverview Rd Saddlehorn Dr Ca ny on Dr G r a n d v i e w T e r Cla yto n C t Ca lifo rni a S t W 3rd Ter Mt H op e C tW 2nd St Hu rric ane Ln (P ) W 22 nd...

  14. Irradiation Experiment Conceptual Design Parameters for NBSR Fuel Conversion

    SciTech Connect (OSTI)

    Brown, N. R.; Brown, N. R.; Baek, J. S; Hanson, A. L.; Cuadra, A.; Cheng, L. Y.; Diamond, D. J.

    2014-04-30T23:59:59.000Z

    It has been proposed to convert the National Institute of Standards and Technology (NIST) research reactor, known as the NBSR, from high-enriched uranium (HEU) fuel to low-Enriched uranium (LEU) fuel. The motivation to convert the NBSR to LEU fuel is to reduce the risk of proliferation of special nuclear material. This report is a compilation of relevant information from recent studies related to the proposed conversion using a metal alloy of LEU with 10 w/o molybdenum. The objective is to inform the design of the mini-plate and full-size-Plate irradiation experiments that are being planned. This report provides relevant dimensions of the fuel elements, and the following parameters at steady state: average and maximum fission rate density and fission density, fuel temperature distribution for the plate with maximum local temperature, and two-dimensional heat flux profiles of fuel plates with high power densities. The latter profiles are given for plates in both the inner and outer core zones and for cores with both fresh and depleted shim arms (reactivity control devices). A summary of the methodology to obtain these results is presented. Fuel element tolerance assumptions and hot channel factors used in the safety analysis are also given.

  15. Irradiation Experiment Conceptual Design Parameters for NBSR Fuel Conversion

    SciTech Connect (OSTI)

    Brown N. R.; Brown,N.R.; Baek,J.S; Hanson, A.L.; Cuadra,A.; Cheng,L.Y.; Diamond, D.J.

    2013-03-31T23:59:59.000Z

    It has been proposed to convert the National Institute of Standards and Technology (NIST) research reactor, known as the NBSR, from high-enriched uranium (HEU) fuel to low-enriched uranium (LEU) fuel. The motivation to convert the NBSR to LEU fuel is to reduce the risk of proliferation of special nuclear material. This report is a compilation of relevant information from recent studies related to the proposed conversion using a metal alloy of LEU with 10 w/o molybdenum. The objective is to inform the design of the mini-plate and full-size plate irradiation experiments that are being planned. This report provides relevant dimensions of the fuel elements, and the following parameters at steady state: average and maximum fission rate density and fission density, fuel temperature distribution for the plate with maximum local temperature, and two-dimensional heat flux profiles of fuel plates with high power densities. . The latter profiles are given for plates in both the inner and outer core zones and for cores with both fresh and depleted shim arms (reactivity control devices). In addition, a summary of the methodology to obtain these results is presented.

  16. Transcriptional and functional studies of Human Endogenous Retrovirus envelope EnvP(b) and EnvV genes in human trophoblasts

    SciTech Connect (OSTI)

    Vargas, Amandine, E-mail: amandine.vargas@voila.fr; Thiery, Maxime, E-mail: thiery.maxime@courrier.uqam.ca; Lafond, Julie, E-mail: lafond.julie@uqam.ca; Barbeau, Benoit, E-mail: barbeau.benoit@uqam.ca

    2012-03-30T23:59:59.000Z

    HERV (Human Endogenous Retrovirus)-encoded envelope proteins are implicated in the development of the placenta. Indeed, Syncytin-1 and -2 play a crucial role in the fusion of human trophoblasts, a key step in placentation. Other studies have identified two other HERV env proteins, namely EnvP(b) and EnvV, both expressed in the placenta. In this study, we have fully characterized both env transcripts and their expression pattern and have assessed their implication in trophoblast fusion. Through RACE analyses, standard spliced transcripts were detected, while EnvV transcripts demonstrated alternative splicing at its 3 Prime end. Promoter activity and expression of both genes were induced in forskolin-stimulated BeWo cells and in primary trophoblasts. Although we have confirmed the fusogenic activity of EnvP(b), overexpression or silencing experiments revealed no impact of this protein on trophoblast fusion. Our results demonstrate that both env genes are expressed in human trophoblasts but are not required for syncytialization.

  17. A Warm Near-Infrared High-Resolution Spectrograph with Very High Throughput (WINERED)

    E-Print Network [OSTI]

    Kondo, Sohei; Kobayashi, Naoto; Yasui, Chikako; Mito, Hiroyuki; Fukue, Kei; Nakanishi, Kenshi; Kawanishi, Takafumi; Nakaoka, Tetsuya; Otsubo, Shogo; Kinoshita, Masaomi; Kitano, Ayaka; Hamano, Satoshi; Mizumoto, Misaki; Yamamoto, Ryo; Izumi, Natsuko; Matsunaga, Noriyuki; Kawakita, Hideyo

    2015-01-01T23:59:59.000Z

    WINERED is a newly built high-efficiency (throughput$ > 25-30\\%$) and high-resolution spectrograph customized for short NIR bands at 0.9-1.35 ${\\rm \\mu}$m. WINERED is equipped with ambient temperature optics and a cryogenic camera using a 1.7 ${\\rm \\mu}$m cut-off HgCdTe HAWAII-2RG array detector. WINERED has two grating modes: one with a conventional reflective echelle grating (R$\\sim$28,300), which covers 0.9-1.35 $\\mu$m simultaneously, the other with ZnSe or ZnS immersion grating (R$\\sim$100,000). We have completed the development of WINERED except for the immersion grating, and started engineering and science observations at the Nasmyth platform of the 1.3 m Araki Telescope at Koyama Astronomical Observatory of Kyoto-Sangyo University in Japan. We confirmed that the spectral resolution ($R\\sim$ 28,300) and the throughput ($>$ 40\\% w/o telescope/atmosphere/array QE) meet our specifications. We measured ambient thermal backgrounds (e.g., 0.06 ${\\rm [e^{-}/sec/pixel]}$ at 287 K), which are roughly consistent ...

  18. The structure of the carbon black flame 

    E-Print Network [OSTI]

    Anderson, W. Kermi

    1945-01-01T23:59:59.000Z

    Wbyo. a1y dWoAmv AcWdp PcWgy nS bomfHdyf AB AHovnvE W QyR mP EWS nSSHnvE Pomg W cWuW Rnb nv W oySRondRy6f SHbbcB mP Wno. a1y EWS AHovS lnR1 vm boy6gnqRHoy mP Wno Wvf R1y PcWgy AmHvfWonyS Woy fyRyognvyf AB R1y bmnvRS WR l1nd1 nvRyofnPPHSnmv mP EWS Wvf... RygbyoWRHoy gyWSHoygyvRS AHR. EnuyS vm nvPmogWRnmv WS Rm R1y SmHody mP R1y fWRW HSyf * mo R1y6 gyR1mf AB l1nd1 R1yB lyoy mARWnvyf. aygbyoWRHoyS oWvEnvE Pomg 0'wJN. Rm U'wwJN. lyoy oydmofyf. Iv EyvyoWc, nR gWB Ay SRWRyf R1WR R1mHE1 R1y inRh yo...

  19. Study of electrodeposited nickel-molybdenum, nickel-tungsten, cobalt-molybdenum, and cobalt-tungsten as hydrogen electrodes in alkaline water electrolysis

    SciTech Connect (OSTI)

    Fan, C.; Piron, D.L.; Sleb, A.; Paradis, P. (Ecole Polytechnique de Montreal, Quebec (Canada). Dept. de Metallurgie et de Genie des Materiaux)

    1994-02-01T23:59:59.000Z

    Electrodeposited nickel-molybdenum, nickel-tungsten, cobalt-molybdenum, and cobalt-tungsten were characterized for the hydrogen evolution reaction (HER) in the electrolysis of 30 w/o KOH alkaline water at 25 C. The rate-determining step (rds) of the HER was suggested based on the Tafel slope of polarization and the capacitance of electrode-solution interface determined by ac impedance measurement. The HER on the nickel- and cobalt-based codeposits was enhanced significantly compared with that o the electrolytic nickel and cobalt with comparable deposit loadings. The decrease in the HER overpotential was more pronounced on the molybdenum-containing codeposits, particularly on cobalt-molybdenum which also showed a high stability. The enhancement of the HER was attributed to both the synergetic composition and the increased active surface of the codeposits. The real electrocatalytic activity of te electrodes and the effect of their and the increased active surface of the codeposits. The real electrocatalytic activity of the electrodes and the effect of their surface increase were distinguished quantitatively. The linear relations between HER overpotential and surface roughness factor of the electrodes on a Y-log(X) plot were obtained experimentally and interpreted based on the Tafel law.

  20. TREKisM Issue 56

    E-Print Network [OSTI]

    1988-01-01T23:59:59.000Z

    '?~-~ / \\ ADMIRAL 1{JE'lR€ ALN10ST OUT Of HOT tJll{ 1tVD (9tl~- 'PRo8J..E:M5/VO-rHINq Bur FkOB~ /"'cfY/5. jP6CI(/HflT HftT )sN), ~J"/ GOINq 10 LJOR.I< 61HeR" \\, 13 Crossword BY Lynn Mostafa • ACROSS CLUES 2. Kruge 27. Pon Farr 3. Chekov's "Wessel" 29. Beauty IIke...OuR 6Cl Ii5) Bur 1iMr Hfff 15r/r qOltVq 10 (JOfwo S(01i~J)ItSN0 r. w'm lht4fd1' "~",sl~ _~I- 4...

  1. Tile and crystal calorimeter for KLOE-2 experiment

    E-Print Network [OSTI]

    F. Happacher; M. Martini; S. Miscetti; I. Sarra

    2009-06-05T23:59:59.000Z

    The upgrade of the DA$\\Phi$NE machine layout requires a modification of the size and position of the inner focusing quadrupoles of KLOE$^2$ thus asking for the realization of two new calorimeters covering the quadrupoles area. To improve the reconstruction of $K_L\\to 2\\pi^0$ events with photons hitting the quadrupoles, a tile calorimeter, QCALT, with high efficiency to low energy photons (20-300 MeV), time resolution of less than 1 ns and space resolution of few cm, is needed. We propose a tile calorimeter with a high granularity readout corresponding to about 2500 silicon photomultipliers (SiPM) of $1\\times 1$ mm$^2$ area. Moreover, the low polar angle regions need the realization of a dense crystal calorimeter with very high time resolution performances to extend the acceptance for multiphotons events. Best candidates for this calorimeter are LYSO crystals with APD readout or PbWO$_4$ crystals with large area SIPM readout.

  2. Direct encapsulation of water-soluble drug into silica microcapsules for sustained release applications

    SciTech Connect (OSTI)

    Wang Jiexin; Wang Zhihui [Key Lab for Nanomaterials, Ministry of Education, Beijing University of Chemical Technology, Beijing 100029 (China); Chen Jianfeng [Key Lab for Nanomaterials, Ministry of Education, Beijing University of Chemical Technology, Beijing 100029 (China); Research Center of the Ministry of Education for High Gravity Engineering and Technology, Beijing University of Chemical Technology, Beijing 100029 (China)], E-mail: chenjf@mail.buct.edu.cn; Yun, Jimmy [Nanomaterials Technology Pte. Ltd., 28 Ayer Rajah Crescent 03-03, Singapore 139959 (Singapore)

    2008-12-01T23:59:59.000Z

    Direct encapsulation of water-soluble drug into silica microcapsules was facilely achieved by a sol-gel process of tetraethoxysilane (TEOS) in W/O emulsion with hydrochloric acid (HCl) aqueous solution containing Tween 80 and drug as well as cyclohexane solution containing Span 80. Two water-soluble drugs of gentamicin sulphate (GS) and salbutamol sulphate (SS) were chosen as model drugs. The characterization of drug encapsulated silica microcapsules by scanning electronic microscopy (SEM), FTIR, thermogravimetry (TG) and N{sub 2} adsorption-desorption analyses indicated that drug was successfully entrapped into silica microcapsules. The as-prepared silica microcapsules were uniform spherical particles with hollow structure, good dispersion and a size of 5-10 {mu}m, and had a specific surface area of about 306 m{sup 2}/g. UV-vis and thermogravimetry (TG) analyses were performed to determine the amount of drug encapsulated in the microcapsules. The BJH pore size distribution (PSD) of silica microcapsules before and after removing drug was examined. In vitro release behavior of drug in simulated body fluid (SBF) revealed that such system exhibited excellent sustained release properties.

  3. The structure of the carbon black flame

    E-Print Network [OSTI]

    Anderson, W. Kermi

    1945-01-01T23:59:59.000Z

    BLACK FLAME A Dissertation By William Kermit Anderson THEHSR UCOF 120925 TNLKMDiserstsKa aony WHR1mo WdpvmlcyfEyS lnR1 R1WvpS 1nS nvfyARyfh vySS Rm R1y SyuyoWc nvfnunfHWcS Wvf fybWoRgyvRS l1m dmmbyoWRyf Rm gWpy R1nS lmop bmSSnAcy. xbydnWc R1Wvp...S Woy fHy Rm R1y PmccmlnvE gygAyoS mP R1y. SRWPP mP R1y TEondHcRHoWc Wvf tyd1WvndWc NmccyEy mP ayqWS. am eo. joyf D. :yvSyv Pmo Ryd1vndWc 1ycb Wvf Pmo vHgyomHS SHEEySRnmvS mP uWcHy. am eo. N. N. 9yfEyS Pmo PnvWvdnWc Wnf Wvf yqdych cyvR dmmbyo...

  4. Syracuse Univesity Test Report On Uptake Factor Resulting From A Dropped Storage Container - Phase II

    SciTech Connect (OSTI)

    Gao, Zhi; Zhang, Jianshun S.

    2012-01-01T23:59:59.000Z

    Under certain circumstances, powder from an accidently dropped container can become airborne and inhaled by people nearby such as those who are moving the containers. The inhaled fine particles can deposit on respiratory tracts and lungs, causing asthma, lung cancer, and other acute respiratory illnesses and chronic symptoms. The objective of this study was to develop a standard procedure to measure the airborne concentrations of different size particles within the vicinity of a dropped container where a significant portion of the contained powder is ejected. Tungsten oxide (WO{sub 3}) was selected in this study to represent relatively heavy powders (7.16 g/cm3 specific gravity for WO{sub 3}). A typical can with the outer dimensions of 4.25” diameter and 4.875” tall was used as the container. The powder was dropped in two different configurations: 1) contained within a can covered by a lid that has a 0.25” diameter hole, and 2) contained within a can without a lid. The packing volume of the powder was 51.4 in3 (842.7 cm{sup 3}) and the target mass was 1936 g. The tests were carried out in a full-scale stainless steel environmental chamber with an interior volume of 852 ft3 (24.1 m3). The chamber system includes an internal recirculation loop with a rectangular air diffuser and 10 variable frequency drive fans to provide a typical room air recirculation flow pattern. Two air filters were installed in the chamber air supply duct and return duct to achieve the required low background particle concentration. The initial chamber air conditions were set at 70°F (± 5°F) and 50% (± 10%) RH. A supporting frame and releasing device were designed and built to trigger consistently the dropping of the can. The particle sampling inlet was placed 5 ft above the floor and 6 inches laterally away from the can’s falling path. Concentrations of particles between 0.5 ?m and 20 ?m were recorded in units of mass and number of particles per unit volume. The data acquisition rate was once every 2 seconds during the first 2 hours. A test procedure was developed and verified. A total of thirty two drop tests were performed, eight in Phase I and twenty four in Phase II, covering variations in dropping height (8 ft or 4 ft from the floor), room air movement (0.25-0.30 m/s or 0.10-0.15 m/s near the ceiling), landing scenario (on a flat plate or a block), and lid condition (¼” lid hole or no lid). There were ten tests with flat plate and ¼” lid hole, ten tests with flat plate no lid and twelve tests with block no lid.

  5. Generation of hydrogen peroxide in a shorted fuel cell

    SciTech Connect (OSTI)

    Webb, S.P.; McIntyre, J.A. [Dow Chemical Company, Midland, MI (United States)

    1996-12-31T23:59:59.000Z

    Hydrogen peroxide is a {open_quotes}green{close_quotes} chemical with a well-assured future. As such, significant growth in demand is predicted for this material. To meet this growth, new technologies of manufacture are being contemplated to compete with the established Anthraquinone process. Some of these new methods seek the niche market of on-site generation of hydrogen peroxide. One good example of this is Dow`s caustic/peroxide generation scheme for the bleaching of paper pulp. Others rely on externally-supplied electrical power in an electrochemical reactor scheme, where peroxide may be generated additionally in neutral or acidic solution. It has long been realized that the chemical potential of the reactants themselves can be used in a controlled manner in an electrolytic cell. This is the basis of fuel cells (to generate electrical power) and has been extended to the synthesis of useful chemical species, either using solid polymer electrolytes or active oxygen transporting membranes. Use has also been made of the inherent chemical potential in H{sub 2}/O{sub 2} reactions to produce hydrogen peroxide. This reactor utilized a liquid phase cathode with dissolved air or oxygen to produce small concentrations of peroxide in a fixed volume. In fact, most schemes for the direct, electrochemical production of peroxide from hydrogen and oxygen yield low, millimolar peroxide concentrations. This paper describes the development of a scalable, segmented-flow, shorted fuel cell for the generation of greater than 1 w/o hydrogen peroxide. Three areas are of major importance in the development of a continuous, peroxide-forming reactor: the reactor design, catalyst choice and application, and the operating parameters for the reactor. The cathode catalyst is probably the single most important part. Operating parameters include such basics as temperature, pressure, gas flow rate, and liquid flow rate. Each of these topics will be discussed.

  6. Entry/Exit Port testing, test report

    SciTech Connect (OSTI)

    Winkelman, R.H.

    1993-05-01T23:59:59.000Z

    The Waste Receiving and Processing Module I (WRAP-1) facility must have the ability to allow 55-gallon drums to enter and exit glovebox enclosures. An Entry/Exit Port (Appendix 1, Figure 1), designed by United Engineers and Constructors (UE&C), is one method chosen for drum transfer. The Entry/Exit Port is to be used for entry of 55-gallon drums into both process entry gloveboxes, exit of 55-gallon drum waste pucks from the low-level waste (LLW) glovebox, and loadout of waste from the restricted waste management glovebox. The Entry/Exit Port relies on capture velocity air flow and a neoprene seal to provide alpha confinement when the Port is in the open and closed positions, respectively. Since the glovebox is in a slight vacuum, air flow is directed into the glovebox through the space between the overpack drum and glovebox floor. The air flow is to direct any airborne contamination into the glovebox. A neoprene seal is used to seal the Port door to the glovebox floor, thus maintaining confinement in the closed position. Entry/Exit Port testing took place February 17, 1993, through April 14, 1993, in the 305 building of Westinghouse Hanford Company. Testing was performed in accordance with the Entry/Exit Port Testing Test Plan, document number WHC-SD-WO26-TP-005. A prototype Entry/Exit Port built at the Hanford Site was tested using fluorescent paint pigment and smoke candles as simulant contaminants. This test report is an interim test report. Further developmental testing is required to test modifications made to the Port as the original design of the Port did not provide complete confinement during all stages of operation.

  7. Development of metal-coated ceramic anodes for molten carbonate fuel cells. Final report

    SciTech Connect (OSTI)

    Khandkar, A.C.; Elangovan, S.; Marianowski, L.G.

    1990-03-01T23:59:59.000Z

    This report documents the developmental efforts on metal coating of various ceramic substrates (LiAlO{sub 2}, SrTiO{sub 3}, and LiFeO{sub 2}) and the critical issues associated with fabricating anodes using metal-coated LiAlO{sub 2} substrates. Electroless Ni and Cu coating technology was developed to achieve complete metal coverage on LiAlO{sub 2} powder substrates. Metal coated SrTiO{sub 3} powders were fabricated into anodes by a process identical to that reported in the GE literature. Microstructural examination revealed that the grains of the ceramic had fused together, with the metal having dewetted from the surface of the ceramic. Alternate substrates that might allow for better wetting of the metal on the ceramic such as LiFeO{sub 2} and Li{sub 2}MnO{sub 3} were identified. Cu/Ni-coated (50:50 mol ratio, 50 w/o metal loading) LiFeO{sub 2} anodes were optimized to meet the MCFC anode specifications. Metal-coated gamma-LiAlO{sub 2} substrates were also developed. By using suitable chemical surface modification methods, the gamma-UAlO{sub 2} substrate surface may be modified to allow a stable metal coated anode to be fabricated. Creep testing of the metal coated ceramic anodes were conducted at IGT. It was determined that the predominant creep mechanism is due to particle rearrangement. The anode porosity, and mean pore size had significant effect on the creep of the anode. Lower porosity and pore size consistent with performance criteria are desired to reduce creep. Lower metal loading with uniformity of coverage will result in lower creep behavior of the anode. Of the two substrates evaluated, LiFeO{sub 2} in general exhibited lower creep which was attributed to superior metal adhesion.

  8. Development of metal-coated ceramic anodes for molten carbonate fuel cells

    SciTech Connect (OSTI)

    Khandkar, A.C.; Elangovan, S.; Marianowski, L.G.

    1990-03-01T23:59:59.000Z

    This report documents the developmental efforts on metal coating of various ceramic substrates (LiAlO{sub 2}, SrTiO{sub 3}, and LiFeO{sub 2}) and the critical issues associated with fabricating anodes using metal-coated LiAlO{sub 2} substrates. Electroless Ni and Cu coating technology was developed to achieve complete metal coverage on LiAlO{sub 2} powder substrates. Metal coated SrTiO{sub 3} powders were fabricated into anodes by a process identical to that reported in the GE literature. Microstructural examination revealed that the grains of the ceramic had fused together, with the metal having dewetted from the surface of the ceramic. Alternate substrates that might allow for better wetting of the metal on the ceramic such as LiFeO{sub 2} and Li{sub 2}MnO{sub 3} were identified. Cu/Ni-coated (50:50 mol ratio, 50 w/o metal loading) LiFeO{sub 2} anodes were optimized to meet the MCFC anode specifications. Metal-coated gamma-LiAlO{sub 2} substrates were also developed. By using suitable chemical surface modification methods, the gamma-UAlO{sub 2} substrate surface may be modified to allow a stable metal coated anode to be fabricated. Creep testing of the metal coated ceramic anodes were conducted at IGT. It was determined that the predominant creep mechanism is due to particle rearrangement. The anode porosity, and mean pore size had significant effect on the creep of the anode. Lower porosity and pore size consistent with performance criteria are desired to reduce creep. Lower metal loading with uniformity of coverage will result in lower creep behavior of the anode. Of the two substrates evaluated, LiFeO{sub 2} in general exhibited lower creep which was attributed to superior metal adhesion.

  9. Intercalation mechanisms and time dependencies of work parameters of electrochromic layers

    SciTech Connect (OSTI)

    Heckner, K.H.; Rothe, A. [Humboldt Univ., Berlin (Germany). Inst. of Physical and Theoretical Chemistry

    1994-12-31T23:59:59.000Z

    The phenomenon of electrochromism offers new routes for convenient devices of light modulation which can be exploited for the fabrication of several optical devices of technological importance. Electrochromic devices have a significant potential for the use as ``smart`` windows for the control of light transmission in response to the change in brightness of the environment, anti-glare rear view mirrors and sun roofs for automobiles, large area optical information displays and consumer sun glasses, just to cite the most relevant examples. This paper describes some essential properties of all-solid-state transmissive electrochromic devices based on a combination of polyaniline (PANI) and tungsten trioxide (WO{sub 3}) layers on ITO sandwiching a proton conducting polymeric layer. The single electrochromic layers were prepared by electrochemical deposition onto ITO/glass electrodes. Proton conducting polymeric electrolytes were prepared by mixing protonic acids with (poly)vinylalcohol. The fabricated all solid-state electrochromic devices exhibit electrochromic response times with color contrasts of about 50% in the range between 0.1 and 1 s, depending on the thickness of the single electrochromic layers, on the cell voltage, on the ion conductivity of the polymeric layer and on the electronic conductivity of the ITO layers. The observed color can be changed from transparent clear yellow to deep blue by applied voltages in the range between 0.5--2 V. The response time of the single investigated electrochromic layers is governed by the rate of proton transport within the layers. The response times of single PANI/ITO/glass half cells in acid aqueous electrolytes show asymmetric characteristics and can be less than 0.2 s.

  10. Urea-Functionalized M4L6 Cage Receptors: Self-Assembly, Dynamics, and Anion Recognition in Aqueous Solutions

    SciTech Connect (OSTI)

    Custelcean, Radu [ORNL; Bonnesen, Peter V [ORNL; Duncan, Nathan C [ORNL; Van Berkel, Gary J [ORNL; Hay, Benjamin [ORNL

    2012-01-01T23:59:59.000Z

    We present an extensive study of a novel class of de novo designed tetrahedral M{sub 4}L{sub 6} (M = Ni, Zn) cage receptors, wherein internal decoration of the cage cavities with urea anion-binding groups, via functionalization of the organic components L, led to selective encapsulation of tetrahedral oxoanions EO{sub 4}{sup -} (E = S, Se, Cr, Mo, W, n = 2; E = P, n = 3) from aqueous solutions, based on shape, size, and charge recognition. External functionalization with tBu groups led to enhanced solubility of the cages in aqueous methanol solutions, thereby allowing for their thorough characterization by multinuclear ({sup 1}H, {sup 13}C, {sup 77}Se) and diffusion NMR spectroscopies. Additional experimental characterization by electrospray ionization mass spectrometry, UV-vis spectroscopy, and single-crystal X-ray diffraction, as well as theoretical calculations, led to a detailed understanding of the cage structures, self-assembly, and anion encapsulation. We found that the cage self-assembly is templated by EO{sub 4}{sup -} oxoanions (n {ge} 2), and upon removal of the templating anion the tetrahedral M{sub 4}L{sub 6} cages rearrange into different coordination assemblies. The exchange selectivity among EO{sub 4}{sup -} oxoanions has been investigated with {sup 77}Se NMR spectroscopy using {sup 77}SeO{sub 4}{sup 2-} as an anionic probe, which found the following selectivity trend: PO{sub 4}{sup 3-} CrO{sub 4}{sup 2-} > SO{sub 4}{sup 2-} > SeO{sub 4}{sup 2-} > MoO{sub 4}{sup 2-} > WO{sub 4}{sup 2-}. In addition to the complementarity and flexibility of the cage receptor, a combination of factors have been found to contribute to the observed anion selectivity, including the anions charge, size, hydration, basicity, and hydrogen-bond acceptor abilities.

  11. Superior catalysts for selective catalytic reduction of nitric oxide. Quarterly technical progress report, 1 January 1994--31 March 1994

    SciTech Connect (OSTI)

    Chen, J.P.; Cheng, L.S.; Hausladen, M.C.; Kikkinides, E.S.; Yang, R.T.

    1994-05-01T23:59:59.000Z

    During the past quarter, progress has been made in four tasks as summarized below: Task 1: A delaminated Fe{sub 2}O{sub 3} pillared clay was synthesized and carefully characterized. The chemical composition was measured by ICP atomic emission spectrometry. The structural changes in the clay as well as the iron oxide particle sizes were characterized by X-ray diffraction techniques. Task 2: The Selective Catalytic Reduction (SCR, i.e., NO reduction with NH{sub 3}) activities of the delaminated pillared clay were tested and compared with four other most active SCR catalysts: a commercial V{sub 2}O{sub 5} + WO{sub 3}/TiO{sub 2} catalyst, a Fe{sub 2}O{sub 3}-pillared clay, and two supported Fe{sub 2}O{sub 3} catalysts (on Al{sub 2}O{sub 3} and TiO{sub 2}). The delaminated Fe{sub 2}O{sub 3} pillared clay exhibited the highest SCR activities. Catalyst stability test showed that the delaminated sample was also stable. Task 3: To further increase the SCR activity of the delaminated pillared clay, Cr{sub 2}O{sub 3} was doped as a promoter by incipient wetness. Task 4: Deactivation effects of SO{sub 2} and H{sub 2}O on the SCR activities of the delaminated Fe{sub 2}O{sub 3} pillared clay were studied, and compared with other SCR catalysts. The delaminated clay catalyst showed the least deactivation.

  12. Matrix photooxidation of the metal carbonyls M(CO)/sub 6/ (M = Cr, W) by the isoelectronic molecules carbon dioxide and nitrous oxide

    SciTech Connect (OSTI)

    Almond, M.J.; Downs, A.J.; Perutz, R.N.

    1985-01-30T23:59:59.000Z

    Photolysis of the hexacarbonyl molecules M(CO)/sub 6/ (M = Cr or W) in the presence of either CO/sub 2/ or N/sub 2/O has been explored by examining the IR, Raman, and UV-visible spectra of solid argon or methane matrices at ca. 20 K. Hence it has been established that the hexacarbonyl undergoes photooxidation at the hands of CO/sub 2/ or N/sub 2/O, the reaction proceeding in three stages. First, photolysis gives rise to a complex of the type XO-M(CO)/sub 5/ (X = OC or N/sub 2/), which is photochromic, being readily converted to Y-M(CO)/sub 5/ (Y = Ar, CH/sub 4/) and M(CO)/sup 6/ with the release of CO/sub 2/ or N/sub 2/O. Second, complexing activates the CO/sub 2/ or N/sub 2/O molecule to photodissociation at wavelengths far in excess of the normal thresholds, so that continued UV photolysis leads to oxidation of the metal carbonyl to oxo-metal carbonyl intermediates O/sub x/M(CO)/sub y/ containing M=O groups, e.g. trans-O/sub 2/W(CO)/sub 4/; there is simultaneous reduction of CO/sub 2/ to CO and of N/sub 2/O to N/sub 2/. In addition, Cr(CO)/sub 6/ but not W(CO)/sub 6/ gives what is believed to be a binuclear intermediate incorporating CO/sub 2/. Finally, after prolonged UV photolysis, oxidation of the metal carbonyls affords the binary metal oxide molecules CrO/sub 2/ and WO/sub 3/. 44 references, 6 figures, 3 tables.

  13. Methane coupling by membrane reactor. First quarterly report, 1997

    SciTech Connect (OSTI)

    Ma, Yi Hua

    1997-05-01T23:59:59.000Z

    The Mn-W-Na/SiO{sub 2} catalyst was studied by running the methane coupling reactions at different methane to oxygen ratios, temperatures and dilution gas flow rates. For methane to oxygen ratios less than 3, the C{sub 2} yield was almost the same; and C{sub 2} yield began to decrease as the methane to oxygen ratio was further increased. The optimal temperature observed was around 800{degrees}C, where the C{sub 2} yield reached a maximum value. Increasing the dilution gas (helium) flow rate resulted in higher C{sub 2} selectivity; however, after a certain dilution gas flow rate the C{sub 2} yield began to decrease due to a decrease in methane conversion as a result of the reduced contact time. The stability study of the catalyst showed that, after five successive run cycles, the C{sub 2} yield obtained decreased from 24% to 19% at 780 {degrees}C, and methane, oxygen and helium flow rates of 12.2, 4.1, and 44. 3 mm/min, respectively. XRD analysis showed that, after the reaction, the XRD peaks of the cristabolite and Na{sub 2}WO{sub 4} phases in the catalyst became smaller than those in the fresh catalyst, and that at least one new, unidentified phase was observed. Mn-W-Na/SiO{sub 2} catalyst was used as the methane oxidative coupling catalyst in a porous membrane reactor and its performance was compared with a packed reactor operated at similar conditions. Although the membrane reactor showed lower methane conversion at the same reaction conditions, it gave higher C{sub 2} selectivity and C{sub 2} yield at similar methane conversions.

  14. ASSESSMENT OF POSSIBLE CYCLE LENGTHS FOR FULLY-CERAMIC MICRO-ENCAPSULATED FUEL-BASED LIGHT WATER REACTOR CONCEPTS

    SciTech Connect (OSTI)

    R. Sonat Sen; Michael A. Pope; Abderrafi M. Ougouag; Kemal Pasamehmetoglu; Francesco Venneri

    2012-04-01T23:59:59.000Z

    The use of TRISO-particle-based dispersion fuel within SiC matrix and cladding materials has the potential to allow the design of extremely safe LWRs with failure-proof fuel. This paper examines the feasibility of LWR-like cycle length for such a low enriched uranium fuel with the imposed constraint of strictly retaining the original geometry of the fuel pins and assemblies. The motivation for retaining the original geometry is to provide the ability to incorporate the fuel 'as-is' into existing LWRs while retaining their thermal-hydraulic characteristics. The feasibility of using this fuel is assessed by looking at cycle lengths and fuel failure rates. Other considerations (e.g., safety parameters, etc.) were not considered at this stage of the study. The study includes the examination of different TRISO kernel diameters without changing the coating layer thicknesses. The study shows that a naive use of UO{sub 2} results in cycle lengths too short to be practical for existing LWR designs and operational demands. Increasing fissile inventory within the fuel compacts shows that acceptable cycle lengths can be achieved. In this study, starting with the recognized highest packing fraction practically achievable (44%), higher enrichment, larger fuel kernel sizes, and the use of higher density fuels have been evaluated. The models demonstrate cycle lengths comparable to those of ordinary LWRs. As expected, TRISO particles with extremely large kernels are shown to fail under all considered scenarios. In contrast, the designs that do not depart too drastically from those of the nominal NGNP HTR fuel TRISO particles are shown to perform satisfactorily and display a high rates of survival under all considered scenarios. Finally, it is recognized that relaxing the geometry constraint will result in satisfactory cycle lengths even using UO{sub 2}-loaded TRISO particles-based fuel with enrichment at or below 20 w/o.

  15. USING RECENT ADVANCES IN 2D SEISMIC TECHNOLOGY AND SURFACE GEOCHEMISTRY TO ECONOMICALLY REDEVELOP A SHALLOW SHELF CARBONATE RESERVOIR: VERNON FIELD, ISABELLA COUNTY, MI.

    SciTech Connect (OSTI)

    James R. Wood; T.J. Bornhorst; S.D. Chittichk; William B. Harrison; W. Quinlan

    2001-01-01T23:59:59.000Z

    The geochemical sampling team collected additional 148 samples at Vernon Field along 5 new traverses. Most of the locations were sampled for three types of analyses: microbial, iodine and enzyme leach; no results from the second batch of samples were available in time for this report. In addition to the sampling, a study was begun on the feasibility of collecting and analyzing hydrocarbon gases (C1-C8) directly. Although several companies offer these services, the cost ($200-300/sample w/o sampling fee) is high, on par with the cost of a 3D seismic survey, and may not include the raw data. However direct sampling of reservoir gases collecting in the soil appear to offer the best approach and should be included in this study. It would probably work well at Vernon Field. It may be possible to lower costs considerably; initial estimates of $20/sample for GCMS (Gas Chromatography--mass spectrometry) analysis are attractive and might induce to Michigan producers to include soil surveys in their routine field work-ups. A complete set of digital data was assembled for Vernon Field and nearby locations. The set consists of well locations, formation top picks, lithologies and scanned images of driller's reports and scout tickets. Well logs are still being located. The annual meeting for the Class Revisit work group is tentatively scheduled for the week of March 1-7 in Tampa, Fl. By that time all of the geochemical data will be available and final decisions regarding drilling can be made.

  16. Fe{sub 2.25}W{sub 0.75}O{sub 4}/reduced graphene oxide nanocomposites for novel bifunctional photocatalyst: One-pot synthesis, magnetically recyclable and enhanced photocatalytic property

    SciTech Connect (OSTI)

    Guo, Jinxue; Jiang, Bin; Zhang, Xiao, E-mail: zhx1213@126.com; Zhou, Xiaoyu; Hou, Wanguo

    2013-09-15T23:59:59.000Z

    Fe{sub 2.25}W{sub 0.75}O{sub 4}/reduced graphene oxide (RGO) composites were prepared for application of novel bifunctional photocatalyst via simple one-pot hydrothermal method, employing graphene oxide (GO), Na{sub 2}WO{sub 4}, FeSO{sub 4} and sodium dodecyl benzene sulfonate (SDBS) as the precursors. Transmission electron microscope (TEM) results indicate that the well-dispersed Fe{sub 2.25}W{sub 0.75}O{sub 4} nanoparticles were deposited on the surface of RGO sheets homogeneously. Magnetic characterization reveals that Fe{sub 2.25}W{sub 0.75}O{sub 4} and Fe{sub 2.25}W{sub 0.75}O{sub 4}/RGO show ferromagnetic behaviors. So this novel bifunctional photocatalyst could achieve magnetic separation and collection with the aid of external magnet. The composites exhibit enhanced photocatalytic performance on degradation of methyl orange (MO) compared with pure Fe{sub 2.25}W{sub 0.75}O{sub 4} under low-power ultraviolet light irradiation due to the introduction of RGO. Moreover, this hybrid catalyst possesses long-term excellent photocatalytic performance due to its good thermal stability. This bifunctional photocatalyst, which combines magnetic property and excellent photocatalytic activity, would be a perfect candidate in applications of catalytic elimination of environmental pollutants and other areas. - Graphical abstract: Magnetically recyclable Fe{sub 2.25}W{sub 0.75}O{sub 4}/reduced graphene oxide nanocomposites with enhanced photocatalytic property Display Omitted - Highlights: ?Fe{sub 2.25}W{sub 0.75}O{sub 4} growth, deposition and GO reduction occurred simultaneously. ?Composite possessed ferromagnetic and enhanced photocatalytic properties. ?Composite is utilized as a magnetically separable and high-efficient photocatalyst. ?Photocatalyst showed good photocatalytic and thermal stability during cyclic use.

  17. Deformation Behavior of Sub-micron and Micron Sized Alumina Particles in Compression.

    SciTech Connect (OSTI)

    Sarobol, Pylin; Chandross, Michael E.; Carroll, Jay; Mook, William; Boyce, Brad; Kotula, Paul G.; McKenzie, Bonnie B.; Bufford, Daniel Charles; Hall, Aaron Christopher.

    2014-09-01T23:59:59.000Z

    The ability to integrate ceramics with other materials has been limited due to high temperature (>800degC) ceramic processing. Recently, researchers demonstrated a novel process , aerosol deposition (AD), to fabricate ceramic films at room temperature (RT). In this process, sub - micro n sized ceramic particles are accelerated by pressurized gas, impacted on the substrate, plastically deformed, and form a dense film under vacuum. This AD process eliminates high temperature processing thereby enabling new coatings and device integration, in which ceramics can be deposited on metals, plastics, and glass. However, k nowledge in fundamental mechanisms for ceramic particle s to deform and form a dense ceramic film is still needed and is essential in advancing this novel RT technology. In this wo rk, a combination of experimentation and atomistic simulation was used to determine the deformation behavior of sub - micron sized ceramic particle s ; this is the first fundamental step needed to explain coating formation in the AD process . High purity, singl e crystal, alpha alumina particles with nominal size s of 0.3 um and 3.0 um were examined. Particle characterization, using transmission electron microscopy (TEM ), showed that the 0.3 u m particles were relatively defect - free single crystals whereas 3.0 u m p articles were highly defective single crystals or particles contained low angle grain boundaries. Sub - micron sized Al 2 O 3 particles exhibited ductile failure in compression. In situ compression experiments showed 0.3um particles deformed plastically, fractured, and became polycrystalline. Moreover, dislocation activit y was observed within the se particles during compression . These sub - micron sized Al 2 O 3 particles exhibited large accum ulated strain (2 - 3 times those of micron - sized particles) before first fracture. I n agreement with the findings from experimentation , a tomistic simulation s of nano - Al 2 O 3 particles showed dislocation slip and significant plastic deformation during compressi on . On the other hand, the micron sized Al 2 O 3 particles exhibited brittle f racture in compression. In situ compression experiments showed 3um Al 2 O 3 particles fractured into pieces without observable plastic deformation in compression. Particle deformation behaviors will be used to inform Al 2 O 3 coating deposition parameters and particle - particle bonding in the consolidated Al 2 O 3 coatings.

  18. Alternative Electrochemical Salt Waste Forms, Summary of FY2010 Results

    SciTech Connect (OSTI)

    Riley, Brian J.; Rieck, Bennett T.; Crum, Jarrod V.; Matyas, Josef; McCloy, John S.; Sundaram, S. K.; Vienna, John D.

    2010-08-01T23:59:59.000Z

    In FY2009, PNNL performed scoping studies to qualify two waste form candidates, tellurite (TeO2-based) glasses and halide minerals, for the electrochemical waste stream for further investigation. Both candidates showed promise with acceptable PCT release rates and effective incorporation of the 10% fission product waste stream. Both candidates received reprisal for FY2010 and were further investigated. At the beginning of FY2010, an in-depth literature review kicked off the tellurite glasses study. The review was aimed at ascertaining the state-of-the-art for chemical durability testing and mixed chloride incorporation for tellurite glasses. The literature review led the authors to 4 unique binary and 1 unique ternary systems for further investigation which include TeO2 plus the following: PbO, Al2O3-B2O3, WO3, P2O5, and ZnO. Each system was studied with and without a mixed chloride simulated electrochemical waste stream and the literature review provided the starting points for the baseline compositions as well as starting points for melting temperature, compatible crucible types, etc. The most promising glasses in each system were scaled up in production and were analyzed with the Product Consistency Test, a chemical durability test. Baseline and PCT glasses were analyzed to determine their state, i.e., amorphous, crystalline, phase separated, had undissolved material within the bulk, etc. Conclusions were made as well as the proposed direction for FY2011 plans. Sodalite was successfully synthesized by the sol-gel method. The vast majority of the dried sol-gel consisted of sodalite with small amounts of alumino-silicates and unreacted salt. Upon firing the powders made by sol-gel, the primary phase observed was sodalite with the addition of varying amounts of nepheline, carnegieite, lithium silicate, and lanthanide oxide. The amount of sodalite, nepheline, and carnegieite as well as the bulk density of the fired pellets varied with firing temperature, sol-gel process chemistry, and the amount of glass sintering aid added to the batch. As the firing temperature was increased from 850 C to 950 C, chloride volatility increased, the fraction of sodalite decreased, and the fractions nepheline and carnegieite increased. This indicates that the sodalite structure is not stable and begins to convert to nepheline and carnegieite under these conditions at 950 C. Density has opposite relationship with relation to firing temperature. The addition of a NBS-1, a glass sintering aid, had a positive effect on bulk density and increased the stability of the sodalite structure in a minimal way.

  19. Design of a boiling water reactor equilibrium core using thorium-uranium fuel

    SciTech Connect (OSTI)

    Francois, J-L.; Nunez-Carrera, A.; Espinosa-Paredes, G.; Martin-del-Campo, C.

    2004-10-06T23:59:59.000Z

    In this paper the design of a Boiling Water Reactor (BWR) equilibrium core using thorium is presented; a heterogeneous blanket-seed core arrangement concept was adopted. The design was developed in three steps: in the first step two different assemblies were designed based on the integrated blanket-seed concept, they are the blanket-dummy assembly and the blanket-seed assembly. The integrated blanketseed concept comes from the fact that the blanket and the seed rods are located in the same assembly, and are burned-out in a once-through cycle. In the second step, a core design was developed to achieve an equilibrium cycle of 365 effective full power days in a standard BWR with a reload of 104 fuel assemblies designed with an average 235U enrichment of 7.5 w/o in the seed sub-lattice. The main operating parameters, like power, linear heat generation rate and void distributions were obtained as well as the shutdown margin. It was observed that the analyzed parameters behave like those obtained in a standard BWR. The shutdown margin design criterion was fulfilled by addition of a burnable poison region in the assembly. In the third step an in-house code was developed to evaluate the thorium equilibrium core under transient conditions. A stability analysis was also performed. Regarding the stability analysis, five operational states were analyzed; four of them define the traditional instability region corner of the power-flow map and the fifth one is the operational state for the full power condition. The frequency and the boiling length were calculated for each operational state. The frequency of the analyzed operational states was similar to that reported for BWRs; these are close to the unstable region that occurs due to the density wave oscillation phenomena in some nuclear power plants. Four transient analyses were also performed: manual SCRAM, recirculation pumps trip, main steam isolation valves closure and loss of feed water. The results of these transients are similar to those obtained with the traditional UO2 nuclear fuel.

  20. Selective catalytic reduction of nitrogen oxides by ammonia over Fe{sup 3+}-exchanged TiO{sub 2}-pillared clay catalysts

    SciTech Connect (OSTI)

    Long, R.Q.; Yang, R.T. [Univ. of Michigan, Ann Arbor, MI (United States). Dept. of Chemical Engineering] [Univ. of Michigan, Ann Arbor, MI (United States). Dept. of Chemical Engineering

    1999-09-10T23:59:59.000Z

    Fe-exchanged TiO{sub 2}-pillared clay (PILC) catalysts were prepared and used for selective catalytic reduction (SCR) of NO{sub x} by ammonia. They were also characterized for surface area, pore size distribution, and by XRD, H{sub 2}-TPR, and FT-IR methods. The Fe-TiO{sub 2}-PILC catalysts showed high activities in the reduction of NO{sub x} by NH{sub 3} in the presence of excess oxygen. SO{sub 2} further increased the catalytic activities at above 350 C, whereas H{sub 2}O decreased the activity slightly. The catalysts were about twice as active as commercial-type V{sub 2}O{sub 5}-WO{sub 3}/TiO{sub 2} catalyst in the presence of H{sub 2}O and SO{sub 2}. Moreover, compared to the commercial catalyst, the Fe-TiO{sub 2}-PILC catalysts had higher N{sub 2}/N{sub 2}O product selectivities (e.g., 0--1% vs 9% N{sub 2}O at 400 C) and substantially lower activities (by 74--88%) for SO{sub 2} oxidation to SO{sub 3} under the same reaction conditions. The activity was further increased to over three times that of the vanadia-based catalyst when Ce was added. The high activity and low N{sub 2}O selectivity for the Fe-TiO{sub 2}-PILC catalysts were attributed to their low activity in the oxidation of ammonia, as compared with vanadia catalysts. XRD patterns of Fe-TiO{sub 2}-PILC were similar to those of TiO{sub 2}-PILC, showing no peaks due to iron oxide, even when the iron content reached 20.1%. The TPR results indicated that iron in the Fe-TiO{sub 2}-PILC catalysts with lower iron contents existed in the form of isolated Fe{sup 3+} ions. The activities of Fe-TiO{sub 2}-PILC catalysts were consistent with their surface acidities, which were identified by FT-IR of the NH{sub 3}-adsorbed samples. The enhancement of activities by H{sub 2}O + SO{sub 2} was attributed to the increase of surface acidity resulting from the formation of surface sulfate species of iron.

  1. OPTIMIZATION OF HETEROGENEOUS UTILIZATION OF THORIUM IN PWRS TO ENHANCE PROLIFERATION RESISTANCE AND REDUCE WASTE.

    SciTech Connect (OSTI)

    TODOSOW,M.; KAZIMI,M.

    2004-08-01T23:59:59.000Z

    Issues affecting the implementation, public perception and acceptance of nuclear power include: proliferation, radioactive waste, safety, and economics. The thorium cycle directly addresses the proliferation and waste issues, but optimization studies of core design and fuel management are needed to ensure that it fits within acceptable safety and economic margins. Typical pressurized water reactors, although loaded with uranium fuel, produce 225 to 275 kg of plutonium per gigawatt-year of operation. Although the spent fuel is highly radioactive, it nevertheless offers a potential proliferation pathway because the plutonium is relatively easy to separate, amounts to many critical masses, and does not present any significant intrinsic barrier to weapon assembly. Uranium 233, on the other hand, produced by the irradiation of thorium, although it too can be used in weapons, may be ''denatured'' by the addition of natural, depleted or low enriched uranium. Furthermore, it appears that the chemical behavior of thoria or thoria-urania fuel makes it a more stable medium for the geological disposal of the spent fuel. It is therefore particularly well suited for a once-through fuel cycle. The use of thorium as a fertile material in nuclear fuel has been of interest since the dawn of nuclear power technology due to its abundance and to potential neutronic advantages. Early projects include homogeneous mixtures of thorium and uranium oxides in the BORAX-IV, Indian Point I, and Elk River reactors, as well as heterogeneous mixtures in the Shippingport seed-blanket reactor. However these projects were developed under considerably different circumstances than those which prevail at present. The earlier applications preceded the current proscription, for non-proliferation purposes, of the use of uranium enriched to more than 20 w/o in {sup 235}U, and has in practice generally prohibited the use of uranium highly enriched in {sup 235}U. They were designed when the expected burnup of light water fuel was on the order of 25 MWD/kgU--about half the present day value--and when it was expected that the spent fuel would be recycled to recover its fissile content.

  2. RELAP5-3D Restart and Backup Verification Testing

    SciTech Connect (OSTI)

    Dr. George L Mesina

    2013-09-01T23:59:59.000Z

    Existing testing methodology for RELAP5-3D employs a set of test cases collected over two decades to test a variety of code features and run on a Linux or Windows platform. However, this set has numerous deficiencies in terms of code coverage, detail of comparison, running time, and testing fidelity of RELAP5-3D restart and backup capabilities. The test suite covers less than three quarters of the lines of code in the relap directory and just over half those in the environmental library. Even in terms of code features, many are not covered. Moreover, the test set runs many problems long past the point necessary to test the relevant features. It requires standard problems to run to completion. This is unnecessary for features can be tested in a short-running problem. For example, many trips and controls can be tested in the first few time steps, as can a number of fluid flow options. The testing system is also inaccurate. For the past decade, the diffem script has been the primary tool for checking that printouts from two different RELAP5-3D executables agree. This tool compares two output files to verify that all characters are the same except for those relating to date, time and a few other excluded items. The variable values printed on the output file are accurate to no more than eight decimal places. Therefore, calculations with errors in decimal places beyond those printed remain undetected. Finally, fidelity of restart is not tested except in the PVM sub-suite and backup is not specifically tested at all. When a restart is made from any midway point of the base-case transient, the restart must produce the same values. When a backup condition occurs, the code repeats advancements with the same time step. A perfect backup can be tested by forcing RELAP5 to perform a backup by falsely setting a backup condition flag at a user-specified-time. Comparison of the calculations of that run and those produced by the same input w/o the spurious condition should be identical. Backup testing is more difficult the other kinds of testing described above because it requires additional coding to implement. The testing system constructed and described in this document resolves all of these issues. A matrix of test features and short-running cases that exercise them is presented. A small information file that contains sufficient data to verify calculations to the last decimal place and bit is produced. This testing system is used to test base cases (called null testing) as well as restart and backup cases. The programming that implements these new capabilities is presented.

  3. Syracuse University Test Report On Uptake Factor Resulting From A Dropped Storage Container

    SciTech Connect (OSTI)

    Gao, Z.; Zhang, J. S.

    2010-09-01T23:59:59.000Z

    Under certain circumstances, powder from an accidently dropped container can become airborne and inhaled by people nearby such as those who are moving the containers. The inhaled fine particles can deposit on respiratory tracts and lungs, causing asthma, lung cancer, and other acute respiratory illnesses and chronic symptoms. The objective of this study was to develop a standard procedure to measure the airborne concentrations of different size particles within the vicinity of a dropped container where a significant portion of the contained powder is ejected. Tungsten oxide (WO{sub 3}) was selected in this study to represent relatively heavy powders (7.16 g/cm3 specific gravity for WO{sub 3}). A typical can with the outer dimensions of 4.25” diameter and 4.875” tall was used as the container. The powder was dropped in two different configurations: 1) contained within a can covered by a lid that has a 0.25” diameter hole, and 2) contained within a can without a lid. The packing volume of the powder was 51.4 in{sup 3} (842.7 cm{sup 3}) and the target mass was 1936 g. The tests were carried out in a full-scale stainless steel environmental chamber with an interior volume of 852 ft{sup 3} (24.1 m{sup 3}). The chamber system includes an internal recirculation loop with a rectangular air diffuser and 10 variable frequency drive fans to provide a typical room air recirculation flow pattern. Two air filters were installed in the chamber air supply duct and return duct to achieve the required low background particle concentration. The initial chamber air conditions were set at 70°F (± 5°F) and 50% (± 10%) RH. A supporting frame and releasing device were designed and built to trigger consistently the dropping of the can at a height of 8 feet from the bottom of the can to the impacting surface. The particle sampling inlet was placed 5 ft above the floor and 6 inches laterally away from the can’s falling path. Concentrations of particles between 0.5 ?m and 20 ?m were recorded in units of mass and number of particles per unit volume. The data acquisition rate was once every 2 seconds during the first 2 hours and every 20 seconds thereafter. A test procedure was developed and a total of nine drop tests were performed. In most cases (seven tests), the can tipped over after dropping. The can in Test 1 stayed upright. The can in Test 7 showed a special behavior: after the rebound, it turned upside down and stayed upright. Major findings are summarized below: ? The amount of spilled powder varied from 0.12 g to 252.35 g and the non-recovered powder varied from 0.11 g to 1.18 g. The corresponding percentage of the spilled powder ranged from 0.01% to 13%. ? The peak value of particle number concentration after the dropping of the can occurred at approximately 0.9 ?m particle size per measured data of individual channels. The peak value of particle mass concentration occurred in the range of 4.3 - 10 ?m particle size per grouped data calculated from the measured data with the exception of Test 4 where a different batch powder with unexpectedly different bulk density and particle size distribution. ? After the dropping of the can, the total airborne mass concentrations ranged from 0.03 to 0.35 mg/m{sup 3}, while the total airborne number concentrations ranged from 2 to 125 #/cm{sup 3} except for Test 4. The number concentration in Test 4 was 1 or 2 orders of magnitude less than those of other tests because the powder was from a different batch. However, its mass concentration was comparable to that in Test 7 because relatively more big airborne particles were detected in Test 4. In general, tests with lid (Test 5, 6, 7 and 8) had smaller concentrations than tests without lid (Test 0, 1, 2, and 3). The influence of lid was not as prominent as the powder (Test 4). However, this needs more tests for verification. ? The ratio of airborne mass to non-recovered mass ranged from 0.1% to 2%. This means that it is challenging to use this method to check the mass balance, while the uptake factor and associated inhalation exposur

  4. Targeted Technology Transfer to US Independents

    SciTech Connect (OSTI)

    E. Lance Cole

    2009-09-30T23:59:59.000Z

    The Petroleum Technology Transfer Council (PTTC) was established by domestic crude oil and natural gas producers, working in conjunction with the Independent Petroleum Association of America (IPAA), the U.S. Department of Energy (DOE) and selected universities, in 1994 as a national not-for-profit organization. Its goal is to transfer Exploration and Production (E&P) technology to the domestic upstream petroleum industry, in particular to the small independent operators. PTTC connects producers, technology providers and innovators, academia, and university/industry/government research and development (R&D) groups. From inception PTTC has received federal funding through DOE's oil and natural gas program managed by the National Energy Technology Laboratory (NETL). With higher funding available in its early years, PTTC was able to deliver well more than 100 workshops per year, drawing 6,000 or more attendees per year. Facing the reality of little or no federal funding in the 2006-2007 time frame, PTTC and the American Association of Petroleum Geologists (AAPG) worked together for PTTC to become a subsidiary organization of AAPG. This change brings additional organizational and financial resources to bear for PTTC's benefit. PTTC has now been 'powered by AAPG' for two full fiscal years. There is a clear sense that PTTC has stabilized and is strengthening its regional workshop and national technology transfer programs and is becoming more entrepreneurial in exploring technology transfer opportunities beyond its primary DOE contract. Quantitative accomplishments: PTTC has maintained its unique structure of a national organization working through Regional Lead Organizations (RLOs) to deliver local, affordable workshops. During the contract period PTTC consolidated from 10 to six regions efficiency and alignment with AAPG sections. The number of workshops delivered by its RLOs during the contract period is shown below. Combined attendance over the period was approximately 32,000, 70% of whom were repeat attendees. Participant feedback established that 40% of them said they had applied a technology they learned of through PTTC. Central/Eastern Gulf Univ. of Alabama, LSU Center for Energy Studies 77 Eastern West Virginia University, Illinois Geological Survey, W. Michigan Univ. 99 Midcontinent University of Kansas, University of Tulsa, Okla. Geological Survey (past) 123 Rocky Mountains Colorado School of Mines 147 Texas/SE New Mexico Bureau of Economic Geology, U. of Texas at Austin 85 West Coast Conservation Committee of California O&G Producers, Univ. So. Cal. (past) 54 At the national level HQ went from an office in Houston to a virtual office in the Tulsa, Okla. area with AAPG providing any physical assets required. There are no employees, rather several full time and several part time contractors. Since inception, PTTC has produced quarterly and mailed the 16-page Network News newsletter. It highlights new advances in technology and has a circulation of 19,000. It also produces the Tech Connections Column in The American Oil & Gas Reporter, with a circulation of 13,000. On an approximate three-week frequency, the electronic Email Tech Alert goes out to 9,000 readers. The national staff also maintains a central website with information of national interest and individual sections for each of the six regions. The national organization also provides legal and accounting services, coordinates the RLO activities, exhibits at at least major national and other meetings, supports the volunteer Board as it provides strategic direction, and is working to restore the Producer Advisory Groups to bolster the regional presence. Qualitative Value: Three qualitative factors confirm PTTC's value to the domestic O&G producing industry. First, AAPG was willing to step in and rescue PTTC, believing it was of significant interest to its domestic membership and of potential value internationally. Second, through a period of turmoil and now with participant fees dramatically increased, industry participants 'keep coming back' to wo

  5. Advanced Automotive Fuels Research, Development, and Commercialization Cluster (OH)

    SciTech Connect (OSTI)

    Linkous, Clovis; Hripko, Michael; Abraham, Martin; Balendiran, Ganesaratnam; Hunter, Allen; Lovelace-Cameron, Sherri; Mette, Howard; Price, Douglas; Walker, Gary; Wang, Ruigang

    2013-08-31T23:59:59.000Z

    Technical aspects of producing alternative fuels that may eventually supplement or replace conventional the petroleum-derived fuels that are presently used in vehicular transportation have been investigated. The work was centered around three projects: 1) deriving butanol as a fuel additive from bacterial action on sugars produced from decomposition of aqueous suspensions of wood cellulose under elevated temperature and pressure; 2) using highly ordered, openly structured molecules known as metal-organic framework (MOF) compounds as adsorbents for gas separations in fuel processing operations; and 3) developing a photocatalytic membrane for solar-driven water decomposition to generate pure hydrogen fuel. Several departments within the STEM College at YSU contributed to the effort: Chemistry, Biology, and Chemical Engineering. In the butanol project, sawdust was blended with water at variable pH and temperature (150 – 250{degrees}C), and heated inside a pressure vessel for specified periods of time. Analysis of the extracts showed a wide variety of compounds, including simple sugars that bacteria are known to thrive upon. Samples of the cellulose hydrolysate were fed to colonies of Clostridium beijerinckii, which are known to convert sugars to a mixture of compounds, principally butanol. While the bacteria were active toward additions of pure sugar solutions, the cellulose extract appeared to inhibit butanol production, and furthermore encouraged the Clostridium to become dormant. Proteomic analysis showed that the bacteria had changed their genetic code to where it was becoming sporulated, i.e., the bacteria were trying to go dormant. This finding may be an opportunity, as it may be possible to genetically engineer bacteria that resist the butanol-driven triggering mechanism to stop further fuel production. Another way of handling the cellulosic hydrolysates was to simply add the enzymes responsible for butanol synthesis to the hydrolytic extract ex-vivo. These enzymes are generally not available commercially, however, and those that are can be quite expensive. Accordingly, the genes responsible for enzyme synthesis were inserted into other microorganisms in order to accelerate enzyme production. This was demonstrated for two of the required enzymes in the overall series. In the MOF project, a number of new MOF compounds were synthesized and characterized, as well as some common MOFs well-known for their adsorption properties. Selectivity for specific gases such as CO{sub 2} and H{sub 2} was demonstrated, although it was seen that water vapor would frequently act as an interferent. This work underscored the need to test MOF compounds under real world conditions, i.e., room temperature and above instead of liquid N{sub 2} temperature, and testing adsorption using blends of gases instead of pure components. In the solar membrane project, thin films of CdTe and WO{sub 3} were applied to steel substrates and used as p-type and n-type semiconductors, respectively, in the production of H{sub 2} and O{sub 2}. Testing with {sup 2}H and {sup 18}O isotopically labeled water enabled substantiation of net water-splitting.

  6. PWR core design, neutronics evaluation and fuel cycle analysis for thorium-uranium breeding recycle

    SciTech Connect (OSTI)

    Bi, G.; Liu, C.; Si, S. [Shanghai Nuclear Engineering Research and Design Inst., No. 29, Hongcao Road, Shanghai, 200233 (China)

    2012-07-01T23:59:59.000Z

    This paper was focused on core design, neutronics evaluation and fuel cycle analysis for Thorium-Uranium Breeding Recycle in current PWRs, without any major change to the fuel lattice and the core internals, but substituting the UOX pellet with Thorium-based pellet. The fuel cycle analysis indicates that Thorium-Uranium Breeding Recycle is technically feasible in current PWRs. A 4-loop, 193-assembly PWR core utilizing 17 x 17 fuel assemblies (FAs) was taken as the model core. Two mixed cores were investigated respectively loaded with mixed reactor grade Plutonium-Thorium (PuThOX) FAs and mixed reactor grade {sup 233}U-Thorium (U{sub 3}ThOX) FAs on the basis of reference full Uranium oxide (UOX) equilibrium-cycle core. The UOX/PuThOX mixed core consists of 121 UOX FAs and 72 PuThOX FAs. The reactor grade {sup 233}U extracted from burnt PuThOX fuel was used to fabrication of U{sub 3}ThOX for starting Thorium-. Uranium breeding recycle. In UOX/U{sub 3}ThOX mixed core, the well designed U{sub 3}ThOX FAs with 1.94 w/o fissile uranium (mainly {sup 233}U) were located on the periphery of core as a blanket region. U{sub 3}ThOX FAs remained in-core for 6 cycles with the discharged burnup achieving 28 GWD/tHM. Compared with initially loading, the fissile material inventory in U{sub 3}ThOX fuel has increased by 7% via 1-year cooling after discharge. 157 UOX fuel assemblies were located in the inner of UOX/U{sub 3}ThOX mixed core refueling with 64 FAs at each cycle. The designed UOX/PuThOX and UOX/U{sub 3}ThOX mixed core satisfied related nuclear design criteria. The full core performance analyses have shown that mixed core with PuThOX loading has similar impacts as MOX on several neutronic characteristic parameters, such as reduced differential boron worth, higher critical boron concentration, more negative moderator temperature coefficient, reduced control rod worth, reduced shutdown margin, etc.; while mixed core with U{sub 3}ThOX loading on the periphery of core has no visible impacts on neutronic characteristics compared with reference full UOX core. The fuel cycle analysis has shown that {sup 233}U mono-recycling with U{sub 3}ThOX fuel could save 13% of natural uranium resource compared with UOX once through fuel cycle, slightly more than that of Plutonium single-recycling with MOX fuel. If {sup 233}U multi-recycling with U{sub 3}ThOX fuel is implemented, more natural uranium resource would be saved. (authors)

  7. Modular Hybrid Plasma Reactor for Low Cost Bulk Production of Nanomaterials

    SciTech Connect (OSTI)

    Peter C. Kong

    2011-12-01T23:59:59.000Z

    INL developed a bench scale modular hybrid plasma system for gas phase nanomaterials synthesis. The system was being optimized for WO3 nanoparticles production and scale model projection to a 300 kW pilot system. During the course of technology development many modifications had been done to the system to resolve technical issues that had surfaced and also to improve the performance. All project tasks had been completed except 2 optimization subtasks. These 2 subtasks, a 4-hour and an 8-hour continuous powder production runs at 1 lb/hr powder feeding rate, were unable to complete due to technical issues developed with the reactor system. The 4-hour run had been attempted twice and both times the run was terminated prematurely. The modular electrode for the plasma system was significantly redesigned to address the technical issues. Fabrication of the redesigned modular electrodes and additional components had been completed at the end of the project life. However, not enough resource was available to perform tests to evaluate the performance of the new modifications. More development work would be needed to resolve these problems prior to scaling. The technology demonstrated a surprising capability of synthesizing a single phase of meta-stable delta-Al2O3 from pure alpha-phase large Al2O3 powder. The formation of delta-Al2O3 was surprising because this phase is meta-stable and only formed between 973-1073 K, and delta-Al2O3 is very difficult to synthesize as a single phase. Besides the specific temperature window to form this phase, this meta-stable phase may have been stabilized by nanoparticle size formed in a high temperature plasma process. This technology may possess the capability to produce unusual meta-stable nanophase materials that would be otherwise difficult to produce by conventional methods. A 300 kW INL modular hybrid plasma pilot scale model reactor had been projected using the experimental data from PPG Industries 300 kW hot wall plasma reactor. The projected size of the INL 300 kW pilot model reactor would be about 15% that of the PPG 300 kW hot wall plasma reactor. Including the safety net factor the projected INL pilot reactor size would be 25-30% of the PPG 300 kW hot wall plasma pilot reactor. Due to the modularity of the INL plasma reactor and the energy cascading effect from the upstream plasma to the downstream plasma the energy utilization is more efficient in material processing. It is envisioning that the material through put range for the INL pilot reactor would be comparable to the PPG 300 kW pilot reactor but the energy consumption would be lower. The INL hybrid plasma technology is rather close to being optimized for scaling to a pilot system. More near term development work is still needed to complete the process optimization before pilot scaling.

  8. Oxidation of Mercury in Products of Coal Combustion

    SciTech Connect (OSTI)

    Peter Walsh; Giang Tong; Neeles Bhopatkar; Thomas Gale; George Blankenship; Conrad Ingram; Selasi Blavo Tesfamariam Mehreteab; Victor Banjoko; Yohannes Ghirmazion; Heng Ban; April Sibley

    2009-09-14T23:59:59.000Z

    Laboratory measurements of mercury oxidation during selective catalytic reduction (SCR) of nitric oxide, simulation of pilot-scale measurements of mercury oxidation and adsorption by unburned carbon and fly ash, and synthesis of new materials for simultaneous oxidation and adsorption of mercury, were performed in support of the development of technology for control of mercury emissions from coal-fired boilers and furnaces. Conversion of gas-phase mercury from the elemental state to water-soluble oxidized form (HgCl{sub 2}) enables removal of mercury during wet flue gas desulfurization. The increase in mercury oxidation in a monolithic V{sub 2}O{sub 5}-WO{sub 3}/TiO{sub 2} SCR catalyst with increasing HCl at low levels of HCl (< 10 ppmv) and decrease in mercury oxidation with increasing NH{sub 3}/NO ratio during SCR were consistent with results of previous work by others. The most significant finding of the present work was the inhibition of mercury oxidation in the presence of CO during SCR of NO at low levels of HCl. In the presence of 2 ppmv HCl, expected in combustion products from some Powder River Basin coals, an increase in CO from 0 to 50 ppmv reduced the extent of mercury oxidation from 24 {+-} 3 to 1 {+-} 4%. Further increase in CO to 100 ppmv completely suppressed mercury oxidation. In the presence of 11-12 ppmv HCl, increasing CO from 0 to {approx}120 ppmv reduced mercury oxidation from {approx}70% to 50%. Conversion of SO{sub 2} to sulfate also decreased with increasing NH{sub 3}/NO ratio, but the effects of HCl and CO in flue gas on SO{sub 2} oxidation were unclear. Oxidation and adsorption of mercury by unburned carbon and fly ash enables mercury removal in a particulate control device. A chemical kinetic mechanism consisting of nine homogeneous and heterogeneous reactions for mercury oxidation and removal was developed to interpret pilot-scale measurements of mercury oxidation and adsorption by unburned carbon and fly ash in experiments at pilot scale, burning bituminous coals (Gale, 2006) and blends of bituminous coals with Powder River Basin coal (Gale, 2005). The removal of mercury by fly ash and unburned carbon in the flue gas from combustion of the bituminous coals and blends was reproduced with satisfactory accuracy by the model. The enhancement of mercury capture in the presence of calcium (Gale, 2005) explained a synergistic effect of blending on mercury removal across the baghouse. The extent of mercury oxidation, on the other hand, was not so well described by the simulation, because of oversensitivity of the oxidation process in the model to the concentration of unburned carbon. Combined catalysts and sorbents for oxidation and removal of mercury from flue gas at low temperature were based on surfactant-templated silicas containing a transition metal and an organic functional group. The presence of both metal ions and organic groups within the pore structure of the materials is expected to impart to them the ability to simultaneously oxidize elemental mercury and adsorb the resulting oxidized mercury. Twelve mesoporous organosilicate catalysts/sorbents were synthesized, with and without metals (manganese, titanium, vanadium) and organic functional groups (aminopropyl, chloropropyl, mercaptopropyl). Measurement of mercury oxidation and adsorption by the candidate materials remains for future work.

  9. Photoelectrochemical Hydrogen Production

    SciTech Connect (OSTI)

    Hu, Jian

    2013-12-23T23:59:59.000Z

    The objectives of this project, covering two phases and an additional extension phase, were the development of thin film-based hybrid photovoltaic (PV)/photoelectrochemical (PEC) devices for solar-powered water splitting. The hybrid device, comprising a low-cost photoactive material integrated with amorphous silicon (a-Si:H or a-Si in short)-based solar cells as a driver, should be able to produce hydrogen with a 5% solar-to-hydrogen conversion efficiency (STH) and be durable for at least 500 hours. Three thin film material classes were studied and developed under this program: silicon-based compounds, copper chalcopyrite-based compounds, and metal oxides. With the silicon-based compounds, more specifically the amorphous silicon carbide (a-SiC), we achieved a STH efficiency of 3.7% when the photoelectrode was coupled to an a-Si tandem solar cell, and a STH efficiency of 6.1% when using a crystalline Si PV driver. The hybrid PV/a-SiC device tested under a current bias of -3~4 mA/cm{sup 2}, exhibited a durability of up to ~800 hours in 0.25 M H{sub 2}SO{sub 4} electrolyte. Other than the PV driver, the most critical element affecting the photocurrent (and hence the STH efficiency) of the hybrid PV/a-SiC device was the surface energetics at the a-SiC/electrolyte interface. Without surface modification, the photocurrent of the hybrid PEC device was ~1 mA/cm{sup 2} or lower due to a surface barrier that limits the extraction of photogenerated carriers. We conducted an extensive search for suitable surface modification techniques/materials, of which the deposition of low work function metal nanoparticles was the most successful. Metal nanoparticles of ruthenium (Ru), tungsten (W) or titanium (Ti) led to an anodic shift in the onset potential. We have also been able to develop hybrid devices of various configurations in a monolithic fashion and optimized the current matching via altering the energy bandgap and thickness of each constituent cell. As a result, the short-circuit photocurrent density of the hybrid device (measured in a 2-electrode configuration) increased significantly without assistance of any external bias, i.e. from ?1 mA/cm{sup 2} to ~5 mA/cm{sup 2}. With the copper chalcopyrite compounds, we have achieved a STH efficiency of 3.7% in a coplanar configuration with 3 a-Si solar cells and one CuGaSe{sub 2} photocathode. This material class exhibited good durability at a photocurrent density level of -4 mA/cm{sup 2} (“5% STH” equivalent) at a fixed potential (-0.45 VRHE). A poor band-edge alignment with the hydrogen evolution reaction (HER) potential was identified as the main limitation for high STH efficiency. Three new pathways have been identified to solve this issue. First, PV driver with bandgap lower than that of amorphous silicon were investigated. Crystalline silicon was identified as possible bottom cell. Mechanical stacks made with one Si solar cell and one CuGaSe{sub 2} photocathode were built. A 400 mV anodic shift was observed with the Si cell, leading to photocurrent density of -5 mA/cm{sup 2} at 0VRHE (compared to 0 mA/cm{sup 2} at the same potential without PV driver). We also investigated the use of p-n junctions to shift CuGaSe{sub 2} flatband potential anodically. Reactively sputtered zinc oxy-sulfide thin films was evaluated as n-type buffer and deposited on CuGaSe{sub 2}. Ruthenium nanoparticles were then added as HER catalyst. A 250 mV anodic shift was observed with the p-n junction, leading to photocurrent density at 0VRHE of -1.5 mA/cm{sup 2}. Combining this device with a Si solar cell in a mechanical stack configuration shifted the onset potential further (+400 mV anodically), leading to photocurrent density of -7 mA/cm{sup 2} at 0VRHE. Finally, we developed wide bandgap copper chalcopyrite thin film materials. We demonstrated that Se can be substituted with S using a simple annealing step. Photocurrent densities in the 5-6 mA/cm{sub 2} range were obtained with red 2.0eV CuInGaS{sub 2} photocathodes. With the metal oxide compounds, we have demonstrated that a WO{sub 3}-based hybrid p

  10. Principles of water oxidation and O2-based hydrocarbon transformation by multinuclear catalytic sites

    SciTech Connect (OSTI)

    Musaev, Djamaladdin G [Chemistry, Emory University; Hill, Craig L [Chemistry, Emory University; Morokuma, Keiji [Chemistry, Emory University

    2014-10-28T23:59:59.000Z

    Abstract The central thrust of this integrated experimental and computational research program was to obtain an atomistic-level understanding of the structural and dynamic factors underlying the design of catalysts for water oxidation and selective reductant-free O2-based transformations. The focus was on oxidatively robust polyoxometalate (POM) complexes in which a catalytic active site interacts with proximal metal centers in a synergistic manner. Thirty five publications in high-impact journals arose from this grant. I. Developing an oxidatively and hydrolytically stable and fast water oxidation catalyst (WOC), a central need in the production of green fuels using water as a reductant, has proven particularly challenging. During this grant period we have designed and investigated several carbon-free, molecular (homogenous), oxidatively and hydrolytically stable WOCs, including the Rb8K2[{Ru4O4(OH)2(H2O)4}(?-SiW10O36)2]·25H2O (1) and [Co4(H2O)2(?-PW9O34)2]10- (2). Although complex 1 is fast, oxidatively and hydrolytically stable WOC, Ru is neither abundant nor inexpensive. Therefore, development of a stable and fast carbon-free homogenous WOC, based on earth-abundant elements became our highest priority. In 2010, we reported the first such catalyst, complex 2. This complex is substantially faster than 1 and stable under homogeneous conditions. Recently, we have extended our efforts and reported a V2-analog of the complex 2, i.e. [Co4(H2O)2(?-VW9O34)2]10- (3), which shows an even greater stability and reactivity. We succeeded in: (a) immobilizing catalysts 1 and 2 on the surface of various electrodes, and (b) elucidating the mechanism of O2 formation and release from complex 1, as well as the Mn4O4L6 “cubane” cluster. We have shown that the direct O-O bond formation is the most likely pathway for O2 formation during water oxidation catalyzed by 1. II. Oxo transfer catalysts that contain two proximal and synergistically interacting redox active metal centers in the active site form another part of considerable interest of our grant because species with such sites [including methane monooxygenase (MMO) and more] are some of the most effective oxygenase catalysts known. Our team conducted the following research on ?-M2-Keggin complexes: (a) investigated stability of the trimer [{Fe3(OH)3(H2O)2}3(?-SiW10O36)3]15-, 4, in water, and developed the chemistry and catalysis of the di-iron centered POM, [?(1,2)-SiW10{Fe(OH)}2O38]6-, 5, in organic solvents (Figure 2). We also study the thermodynamic and structural stability of ?-M2-Keggin in aqueous media for different M’s (d-electron metals). We have defined two structural classes of POMs with proximally bound d-electron metal centers. We refer to these structural isomers of the {?-M2SiW10} family of POMs as “in-pocket” and “out-of pocket”. We have elucidated the factors controlling the structure and stability of the V, Fe, Ru, Tc, Mo and Rh derivatives of [(SiO4)M2(OH)2W10O32]4- using a range of computational tools. We have: (a) demonstrated that heteroatom X in these polyanions may function as an “internal switch” for defining the ground electronic states and, consequently, the reactivity of the ?-M2-Keggin POM complexes; (b) elucidated reactivity of divacant lacunary species and polyperoxotungstates (PPTs), {Xn+O4[WO(O2)2]4}n-, which could be degradation products of ?-M2-Keggin complexes in aqueous media; (c) elucidated the role of the POM ligand in stabilization of {Ru2} and {(Ru-oxo)2} fragments in the reactant and product of the reaction of {?-[(Xn+O4)Ru2(OH)2W10O32]}(8-n)- (where X = Si4+, P5+ and S6+) with O2, and (d) the mechanisms of olefin epoxidation catalyzed by these di-d-transition metal substituted and divacant lacunary ?-M2-Keggin complexes. III. Complementing the efforts presented above was the development of less time-consuming but reasonably accurate computational methods allowing one to explore more deeply large catalytic systems. We developed Reactive Force Field (ReaxFF) to study interaction of the targeted POMs with water, pro