Sample records for gro bdwt wo

  1. GroSolar | Open Energy Information

    Open Energy Info (EERE)

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  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. A HYBRID MAGNETICALLY/THERMALLY DRIVEN WIND IN THE BLACK HOLE GRO J1655–40?

    E-Print Network [OSTI]

    Homan, Jeroen

    During its 2005 outburst, GRO J1655-40 was observed twice with the Chandra High Energy Transmission Grating Spectrometer; the second observation revealed a spectrum rich with ionized absorption lines from elements ranging ...

  5. BeppoSAX observations of GRO J1744-28

    E-Print Network [OSTI]

    Doroshenko, R; Doroshenko, V; Suleimanov, V; Piraino, S

    2015-01-01T23:59:59.000Z

    We present an analysis of BeppoSAX observations of the unique transient bursting X-ray pulsar GRO J1744-28. The observations took place in March 1997 during the decay phase of the outburst. We find that the persistent broadband X-ray continuum of the source is consistent with a cutoff power law typical for the accreting pulsars. We also detect the fluorescence iron line at 6.7 keV and an absorption feature at ~4.5 keV, which we interpret as a cyclotron line. The corresponding magnetic field strength in the line forming region is ~3.7 x 10^11 G. Neither line is detected in the spectra of the bursts. However, additional soft thermal component with kT ~2 keV was required to describe the burst spectrum. We briefly discuss the nature of this component and argue that among other possibilities it might be connected with thermonuclear flashes at the neutron star surface which accompany the accretion-powered bursts in the source.

  6. 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.

  7. 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

  8. Exploring the structural dynamics of the E. coli chaperonin GroEL using translation-libration-screw crystallographic refinement of intermediate states

    SciTech Connect (OSTI)

    Chaudhry, Charu; Horwich, Arthur L.; Brunger, Axel T.; Adams, Paul D.

    2004-08-12T23:59:59.000Z

    Large rigid-body domain movements are critical to GroEL-mediated protein folding, especially apical domain elevation and twist associated with the formation of a folding chamber upon binding ATP and co-chaperonin GroES. Here, we have modeled the anisotropic displacements of GroEL domains from various crystallized states, unliganded GroEL, ATP?S-bound, ADP-AlFx/GroES-bound, and ADP/GroES bound, using translation-libration-screw (TLS) analysis. Remarkably, the TLS results show that the inherent motions of unliganded GroEL, a polypeptide-accepting state, are biased along the transition pathway that leads to the folding-active state. In the ADP-AlFx/GroES-bound folding-active state the dynamic modes of the apical domains become reoriented and coupled to the motions of bound GroES. The ADP/GroES complex exhibits these same motions, but they are increased in magnitude, potentially reflecting the decreased stability of the complex after nucleotide hydrolysis. Our results have allowed the visualization of the anisotropic molecular motions that link the static conformations previously observed by X-ray crystallography. Application of the same analyses to other macromolecules where rigid body motions occur may give insight into the large scale dynamics critical for function and thus has the potential to extend our fundamental understanding of molecular machines.

  9. 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...

  10. 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...

  11. 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.

  12. 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...

  13. GroSolar formerly Global Resource Options Inc | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual Siteof Energy 2,AUDIT REPORTEnergyFarms A SUKHydrogen CompanyGroSolar formerly Global

  14. 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

  15. The remarkable timing properties of a `hypersoft' state in GRO J1655-40

    E-Print Network [OSTI]

    Uttley, Philip

    2015-01-01T23:59:59.000Z

    We report the identification and study of an unusual soft state of the black hole low-mass X-ray binary GRO J1655-40, observed during its 2005 outburst by the Rossi X-ray Timing Explorer. Chandra X-ray grating observations have revealed a high mass-outflow accretion disc wind in this state, and we show that the broadband X-ray spectrum is remarkably similar to that observed in the so-called `hypersoft' state of the high mass X-ray binary Cyg X-3, which possesses a strong stellar wind from a Wolf-Rayet secondary. The power-spectral density (PSD) of GRO J1655-40 shows a bending power-law shape, similar to that of canonical soft states albeit with larger fractional rms. However, the characteristic bend-frequency of the PSD is strongly correlated with the X-ray flux, such that the bend-frequency increases by two decades for less than a factor 2 increase in flux. The strong evolution of PSD bend-frequency for very little change in flux or X-ray spectral shape seems to rule out the suppression of high-frequency var...

  16. Spectral Evolution of the Continuum and Disc Line in Dipping in GRO J1655-40

    E-Print Network [OSTI]

    M. Balucinska-Church

    2001-01-22T23:59:59.000Z

    The discovery is reported of emission features in the X-ray spectrum of GRO J1655-40 obtained using Rossi-XTE on 1997, Feb 26. The features have been fitted firstly by two Gaussian lines, which in four spectra have average energies of 5.85+/-0.08 keV and 7.32+/-0.13 keV, strongly suggestive that these are the red- and blueshifted wings of an iron disc line from material with velocity ~0.33 c. The blue wing is apparently less bright than expected for a disc line subject to Doppler boosting, however, known absorption in the spectrum of GRO J1655-40 at energies between ~7 and 8 keV can reduce the apparent brightness of the blue wing. The spectra have also been fitted well using the full relativistic disc line model of Laor, plus an absorption line. This gives a restframe energy between 6.4 and 6.8 keV indicating that the line is from highly ionized iron K_alpha. The Laor model also shows that the line originates at radii extending from ~10 Schwarzschild radii (r_S) outwards. The line is direct evidence for the black hole nature of the compact object. The continuum is well described by dominant disc blackbody emission plus Comptonized emission. During dipping, spectral evolution is well modelled by allowing progressive covering of the disc blackbody and simple absorption of the Comptonized emission showing that the thermal emission is more extended. Acceptable fits are only obtained by including the disc line in the covering term, indicating that it originates in the same inner disc region as the thermal continuum. Dip ingress times and durations are used to provide the radius of the disc blackbody emitter as 170-370 r_S, and the radius of the absorber.

  17. 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...

  18. Discovery of a 450 Hz QPO from the Microquasar GRO J1655-40 with RXTE

    E-Print Network [OSTI]

    Tod E. Strohmayer

    2001-04-30T23:59:59.000Z

    We report the discovery with the proportional counter array (PCA) onboard the Rossi X-ray Timing Explorer (RXTE) of a 450 Hz quasiperiodic oscillation (QPO) in the hard X-ray flux from the galactic microquasar GRO J1655-40. This is the highest frequency QPO modulation seen to date from a black hole. The QPO is detected only in the hard X-ray band above 13 keV. It is both strong and narrow, with a typical rms amplitude of 4.5 % in the 13 - 27 keV range, and a width of 40 Hz (FWHM). For two observations in which we detect the 450 Hz QPO a previously known 300 Hz QPO is also observed in the 2 - 13 keV band. We show that these two QPO sometimes appear simultaneously, thus demonstrating the first detection of a pair of high frequency QPO in a black hole system. Prior to this, pairs of high frequency QPO have only been detected in neutron star systems. GRO J1655-40 is one of only a handful of black hole systems with a good dynamical mass constraint. For a non-rotating black hole with mass between 5.5 - 7.9 solar masses, the innermost stable circular orbit (ISCO) ranges from 45 - 70 km. For any mass in this range the radius at which the orbital frequency reaches 450 Hz is less than the ISCO radius, indicating that if the modulation is caused by Kepler motion, the black hole must have appreciable spin. If the QPO frequency is set by the orbital frequency of matter at the ISCO then for this mass range the dimensionless angular momentum lies between 0.15 < j < 0.5. Moreover, if the modulation is caused by oscillation modes in the disk or Lense-Thirring precession, then this would also require a rapidly rotating hole. We briefly discuss the implications of our findings for models of X-ray variability in black holes and neutron stars.

  19. Thermonuclear Burning on the Accreting X-Ray Pulsar GRO J1744-28

    E-Print Network [OSTI]

    Lars Bildsten; Edward F. Brown

    1996-09-23T23:59:59.000Z

    We investigate the thermal stability of nuclear burning on the accreting X-ray pulsar GRO J1744-28. The neutron star's dipolar magnetic field is thermonuclear instabilities are unlikely causes of the hourly bursts seen at very high accretion rates. We then discuss how the stability of the thermonuclear burning depends on both the global accretion rate and the neutron star's magnetic field strength. We emphasize that the appearance of the instability (i.e., whether it looks like a Type I X-ray burst or a flare lasting a few minutes) will yield crucial information on the neutron star's surface magnetic field and the role of magnetic fields in convection. We suggest that a thermal instability in the accretion disk is the origin of the long (~300 days) outburst and that the recurrence time of these outbursts is >50 years. We also discuss the nature of the binary and point out that a velocity measurement of the stellar companion (most likely a Roche-lobe filling giant with m_K>17) will constrain the neutron star mass.

  20. 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

  1. 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...

  2. 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

  3. 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.

  4. Bodo Bauer, Rdiger Berlich, Daniel Bischof, Michael Burghart, Roland Dyroff, Christian Egle, Karl Eichwalder, Stefan Fent, Werner Fink, Klaus Franken, Fritz Ganter, Jrgen Geck, Carsten Gro,

    E-Print Network [OSTI]

    Bremen, Universität

    Bodo Bauer, Rüdiger Berlich, Daniel Bischof, Michael Burghart, Roland Dyroff, Christian Egle, Karl Eichwalder, Stefan Fent, Werner Fink, Klaus Franken, Fritz Ganter, Jürgen Geck, Carsten Gro�, Rolf Strattner, Jörg Strebel, Steve Tomlin, Klaus G. Wagner, Thorsten Wandersmann, Udo Weber, Michael Weyrauch

  5. 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.

  6. 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.

  7. 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.

  8. 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.

  9. 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}.

  10. 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}.

  11. Propagating Oscillatory Shock Model for QPOS in GRO J1655-40 During the March 2005 Outburst

    E-Print Network [OSTI]

    Sandip K. Chakrabarti; A. Nandi; D. Debnath; R. Sarkar; B. G. Datta

    2005-08-01T23:59:59.000Z

    GRO 1655-40, a well known black hole candidate, showed renewed X-ray activity in March 2005 after being dormant for almost eight years. It showed very prominent quasi-periodic oscillations. We analysed the data of two observations in this {\\it Rapid Communication}, one taken on March 2nd, 2005 and the other taken on the March 11th, 2005. On March 2nd, 2005 the shock was weak and the QPO was seen in roughly all energies. On March 11th, 2005 the power density spectra showed that quasi-periodic oscillations (QPOs) were exhibited in harder X-rays. On the first day, the QPO was seen at 0.13Hz and on the second day, the QPO was seen at $\\sim 6.5$Hz with a spectral break at $\\sim 0.1$Hz. We analysed the QPOs for the period 25th Feb. 2005 to 12th of March, 2005 and showed that the frequency of QPO increased monotonically from 0.088Hz to 15.01Hz. This agrees well if the oscillating shock is assumed to propagate with a constant velocity. On several days we also noticed the presence of very high frequency QPOs and for the first time we detected QPOs in the 600-700Hz range, the highest frequency range so far reported for any black hole candidate.

  12. 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

  13. 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.

  14. 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.

  15. 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.

  16. 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 +].

  17. 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$\

  18. 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.

  19. 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.

  20. 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.

  1. 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.

  2. 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.

  3. 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 $\\alpha$...

  4. 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.

  5. 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.

  6. 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.

  7. 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.

  8. 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.

  9. 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

  10. 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.

  11. 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.

  12. 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...

  13. 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.

  14. 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

  15. 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

  16. 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

  17. 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

  18. 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.

  19. 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.

  20. 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.

  1. 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...

  2. 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.

  3. 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.

  4. 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)

  5. 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.

  6. 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

  7. 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

  8. 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 ...

  9. 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

  10. 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.

  11. 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 ...

  12. 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.

  13. 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.

  14. 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.

  15. 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

  16. 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\

  17. 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.

  18. 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.

  19. 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.

  20. 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.

  1. 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,

  2. inside shuttle sign wo date

    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

  3. 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)

  4. 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...

  5. 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

  6. On the development of a GroEL based platform for identifying pharmacological chaperones

    E-Print Network [OSTI]

    Naik, Subhashchandra

    2013-05-31T23:59:59.000Z

    1 CHAPTER 1: ON THE NEED FOR A PLATFORM FOR IDENTIFYING PHARMACOLOGICAL CHAPERONES 1.1 Protein misfolding and proteostasis. 1.1.1 Protein folding and misfolding. a Protein folding and function. Proteins are crucial for all essential life... years. Some of the initial studies in the field of protein folding were performed by Linus Pauling and E.J. Corey, who first discovered that polypeptides form secondary structure elements such as alpha helices and beta sheets (1). Later, Christian...

  7. A Short Biography of 'Gro-mgon Chos-rgyal 'Phags-pa

    E-Print Network [OSTI]

    Densapa, Tashi

    entered Sgo-mang college (gra-tshang) of 'Bras-spungs monastery and received instruction from Mkhan-chen Sanga-rgyas Rdo-rje. He completed his Dge-bshes degree at Ne'u-tog. When he returned to A-mdo, he made great improvements at Bkra-shis 'khyil... in 1720. On the ninth month. of the Iron-Mouse year, he was brought to Lhasa and enthroned in the Potala. Then in the second month of the Iron-Sheep year (1751), the Seventh Dalai Lama assumed full spiritual and temporal powers over Tibet. For details...

  8. Structure of water layers on hydrogen-covered Pt electrodes Tanglaw Roman and Axel Gro

    E-Print Network [OSTI]

    Ulm, Universität

    - gies in energy conversion and storage. At the same time, modern electrochemistry becomes increasingly of Theoretical Chemistry, Ulm University, D-89069 Ulm, Germany The structure of water layers above hydrogen of Theoretical Chemistry Ulm University D-89069 Ulm/Germany Tel.: +49 (0)731 50 22810 Fax: +49 (0)731 50 22819

  9. Chesapeake Solar LLC a groSolar company | 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 Siteof Energy 2,AUDIT REPORTEnergy Offshore Place: SpainGuajirugroSolar company Jump to:

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

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    Manstein, Dietmar J.

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

  11. 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...

  12. 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...

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

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    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

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

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    Güting, Ralf Hartmut

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

  15. 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...

  16. 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...

  17. 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...

  18. Real-WoRld Technology TesTs

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    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...

  19. 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.

  20. 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...

  1. 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

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    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

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    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

  4. 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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    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

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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 IndustryExceptional

  7. 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

  8. 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.

  9. 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

  10. 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.

  11. 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.

  12. 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

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    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

  14. 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

  15. 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

  16. 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

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    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

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    E-Print Network [OSTI]

    Wu, Yih-Min

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

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

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    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

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    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

  1. 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

  2. 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

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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 Asked Questions forCheneyNovember S. DEPARTMENTtheStatus of the Mixed2505 WCRRF

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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 Asked Questions forCheneyNovember S. DEPARTMENTtheStatus of the Mixed2505 WCRRFSection

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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 Asked Questions forCheneyNovember S. DEPARTMENTtheStatus of the Mixed2505 WCRRFSection7

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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 Asked Questions forCheneyNovember S. DEPARTMENTtheStatus of the Mixed2505

  7. 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

  8. 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

  9. 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

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    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

  11. 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,

  12. B y M E R E D I T H F R A N C O M The ground shakes. The gro-

    E-Print Network [OSTI]

    Seamons, Kent E.

    explained the proper procedure for safety dur- ing an earthquake has three steps: drop, cover and hold, the Wasatch fault is a series of over- lapping faults running from Malad City, Idaho, through Salt Lake City probability of a large earthquake on the Wasatch fault in the next 50 years. "It's possible we'll live and die

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    Ferreira, Márcia M. C.

    MODELOS PARA PREVIS�O DE NOTAS DE AVALIA��O SENSORIAL DE BEBIDA DE CAF� ARÁBICA COM BASE NA atributos sensoriais com base no perfil cromatográfico dos voláteis de grãos de café arábica torrado as ferramentas empregadas na análise dos dados. As notas previstas pelos modelos gerados para acidez, amargor

  14. 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

  15. 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...

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

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    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

  18. The Periplasmic Cavity of LacY Mutant Cys154 -> Gly: How Open Is Open?

    E-Print Network [OSTI]

    Jiang, X; Driessen, AJM; Feringa, BL; Kaback, HR

    2013-01-01T23:59:59.000Z

    GroEL-GroES- mediated protein folding. Chem. Rev. 106, 1917–of chaperone-mediated protein folding in the cytosol. Nat.that impair membrane protein folding and generate a membrane

  19. YidC protein, a molecular chaperone for LacY protein folding via the SecYEG protein machinery

    E-Print Network [OSTI]

    Zhu, L; Kaback, HR; Dalbey, RE

    2013-01-01T23:59:59.000Z

    GroEL-GroES- mediated protein folding. Chem. Rev. 106, 1917–of chaperone-mediated protein folding in the cytosol. Nat.that impair membrane protein folding and generate a membrane

  20. adolescents reporting high: Topics by E-print Network

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

    ARA Gro G520T Egrett high altitude research aircraft with three BAT probes. NOAA ARL Monthly Activity Report Geosciences Websites Summary: The ARA Gro G520T Egrett high...

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

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    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

  2. 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...

  3. 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...

  4. 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...

  5. http://tti.tamu.edu > Variable message signs > Traffic actuated controllers > Traffic signals > Flashing traffic signals > Lane use control signals > Road markings > Rumble strips > Warrants (Traffic control devices) > Gro

    E-Print Network [OSTI]

    agencies and private- sector companies on the design, construction, testing and evaluation of highway railings > Transportation corridors > Streambeds > Pipelin Street lighting > Freeways > Highways > Arterial > Light emitting diodes > Portable equipment > Construction equipment > Roadbuilding machinery

  6. 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

  7. 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

  8. 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

  9. 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

  10. 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...

  11. 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...

  12. 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

  13. 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

  14. 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

  15. 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...

  16. Moletular Strucl,urt and Life (Ed. b1' f. Klogoku and T. Nishimura), pp. 207 276, Japan Sci. Soc. Prrs, Toklo/CRC Prus, Boca Raton (1992)

    E-Print Network [OSTI]

    1992-01-01T23:59:59.000Z

    a t ATGACTCAT, althour permits strains to gro\\r DNA-binding exp binds more efficientlYtc protein. GCN4 binds

  17. als teil des: Topics by E-print Network

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

    1990: TBL prgt Begriff "World Wide Web" - Beginn eines gro?en Hypertext Zachmann, Gabriel 4 Whitehead's Ausdehnungslehre Die Kapitel II und III im Teil IV von...

  18. anlagentechnischen grundlagen des: Topics by E-print Network

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

    1990: TBL prgt Begriff "World Wide Web" - Beginn eines gro?en Hypertext Zachmann, Gabriel 8 STRUKTURELLE GRUNDLAGEN UND MECHANIK VON ZYTOGELEN Biology and Medicine...

  19. Thomas Hebbeker Der Tanz der

    E-Print Network [OSTI]

    Hebbeker, Thomas

    von Tycho Brahe) Newton , 1684: Periode groÃ?e Halbachse gemeinsame Zentralmasse 32 ~ aP 2 2 a mM Gam

  20. A stoichiometric model of Escherichia coli 's macromolecular synthesis machinery and its integration with metabolism

    E-Print Network [OSTI]

    Thiele, Ines

    2009-01-01T23:59:59.000Z

    Protein Folding. . . . . . . . . . . . . . . . . . . . . . . . . . .of chaperonin-dependent protein folding in Escherichia coli.Chaperonin-mediated protein folding at the surface of groEL

  1. 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

  2. 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 -...

  3. 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...

  4. 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

  5. Formal Verification and In-Situ Test of Analog and Mixed-Signal Circuits

    E-Print Network [OSTI]

    Yin, Leyi 1983-

    2012-08-15T23:59:59.000Z

    many new in-situ test schemes in a mixed-signal environment. First, a novel two-level structure of GRO-PVDL is proposed for on-chip jitter testing of high-speed high-resolution applications with a gated ring oscillator (GRO) at the first level...

  6. 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

  7. 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

  8. 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

  9. 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

  10. 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

  11. 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

  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

    ) 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...

  13. 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

  14. Survey of large protein complexes D. vulgaris reveals great structural diversity

    E-Print Network [OSTI]

    Han, B.-G.

    2010-01-01T23:59:59.000Z

    GroEL, DVU1976); 14. Riboflavin synthase (DVU1198, DVU1200).S9. Purification of riboflavin synthase. Fractions from thearrow in A shows the riboflavin synthase and in B shows

  15. Tha rgyas Wedding Song 4

    E-Print Network [OSTI]

    Sgrol ma lha skyid

    This collection contains two biographical songs, three dancing songs, three folk songs, one speech, seven weddings songs, and two welcoming songs collected in Tha rgyas Village, Rtsa zhol Township, Mol gro gung dkar County, Lhasa City, Tibet...

  16. Tha rgyas Biography 1

    E-Print Network [OSTI]

    Sgrol ma lha skyid

    This collection contains two biographical songs, three dancing songs, three folk songs, one speech, seven weddings songs, and two welcoming songs collected in Tha rgyas Village, Rtsa zhol Township, Mol gro gung dkar County, Lhasa City, Tibet...

  17. Tha rgyas Wedding Song 2

    E-Print Network [OSTI]

    Sgrol ma lha skyid

    This collection contains two biographical songs, three dancing songs, three folk songs, one speech, seven weddings songs, and two welcoming songs collected in Tha rgyas Village, Rtsa zhol Township, Mol gro gung dkar County, Lhasa City, Tibet...

  18. Tha rgyas Dancing Song 2

    E-Print Network [OSTI]

    Sgrol ma lha skyid

    This collection contains two biographical songs, three dancing songs, three folk songs, one speech, seven weddings songs, and two welcoming songs collected in Tha rgyas Village, Rtsa zhol Township, Mol gro gung dkar County, Lhasa City, Tibet...

  19. Tha rgyas Dancing Song 3

    E-Print Network [OSTI]

    Sgrol ma lha skyid

    This collection contains two biographical songs, three dancing songs, three folk songs, one speech, seven weddings songs, and two welcoming songs collected in Tha rgyas Village, Rtsa zhol Township, Mol gro gung dkar County, Lhasa City, Tibet...

  20. Tha rgyas Dancing Song 1

    E-Print Network [OSTI]

    Sgrol ma lha skyid

    This collection contains two biographical songs, three dancing songs, three folk songs, one speech, seven weddings songs, and two welcoming songs collected in Tha rgyas Village, Rtsa zhol Township, Mol gro gung dkar County, Lhasa City, Tibet...

  1. Tha rgyas Folk Song 1

    E-Print Network [OSTI]

    Sgrol ma lha skyid

    This collection contains two biographical songs, three dancing songs, three folk songs, one speech, seven weddings songs, and two welcoming songs collected in Tha rgyas Village, Rtsa zhol Township, Mol gro gung dkar County, Lhasa City, Tibet...

  2. Tha rgyas Biography 2

    E-Print Network [OSTI]

    Sgrol ma lha skyid

    This collection contains two biographical songs, three dancing songs, three folk songs, one speech, seven weddings songs, and two welcoming songs collected in Tha rgyas Village, Rtsa zhol Township, Mol gro gung dkar County, Lhasa City, Tibet...

  3. Tha rgyas Welcoming Song 2

    E-Print Network [OSTI]

    Sgrol ma lha skyid

    This collection contains two biographical songs, three dancing songs, three folk songs, one speech, seven weddings songs, and two welcoming songs collected in Tha rgyas Village, Rtsa zhol Township, Mol gro gung dkar County, Lhasa City, Tibet...

  4. Tha rgyas Folk Song 3

    E-Print Network [OSTI]

    Sgrol ma lha skyid

    This collection contains two biographical songs, three dancing songs, three folk songs, one speech, seven weddings songs, and two welcoming songs collected in Tha rgyas Village, Rtsa zhol Township, Mol gro gung dkar County, Lhasa City, Tibet...

  5. (Dept. of Urban & Regional Planning) WICCI Science Council

    E-Print Network [OSTI]

    Sheridan, Jennifer

    Jim LaGro UW-Madison (Dept. of Urban & Regional Planning) WICCI Science Council October 28, 2011 Unlimited Wisconsin Citizen-Based Monitoring Network Wisconsin Environmental Initiative Wisconsin River

  6. aunapuu lle pechter: Topics by E-print Network

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

    USerS groUp WorkShop LLE Review, Volume 124 205 The Second Omega, with significant NNSA support already allocated for studentpostdoctoral travel expenses. 12;The Second...

  7. 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

  8. 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

  9. 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...

  10. 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....

  11. 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...

  12. 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...

  13. 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

  14. 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.

  15. 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...

  16. 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

  17. 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

  18. 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...

  19. 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.

  20. 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...

  1. 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

  2. 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

  3. 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).

  4. Medieninformation Kommunikation und Medien

    E-Print Network [OSTI]

    Hoffmann, Rolf

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

  5. 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...

  6. 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.

  7. 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

  8. 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

  9. 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. ...

  10. Export is the default pathway for soluble unfolded polypeptides that accumulate during expression in Escherichia coli

    SciTech Connect (OSTI)

    Scotto-Lavino, E.; Freimuth, P.; Bai, M.; Zhang, Y.-B.

    2011-09-01T23:59:59.000Z

    Several E. coli endogenous, cytoplasmic proteins that are known clients of the chaperonin GroEL were overexpressed to examine the fate of accumulated unfolded polypeptides. Substantial fractions of about half of the proteins formed insoluble aggregates, consistent with the hypothesis that these proteins were produced at rates or in amounts that exceeded the protein-folding capacity of GroEL. In addition, large fractions of three overexpressed GroEL client proteins were localized in an extra-cytoplasmic, osmotically-sensitive compartment, suggesting they had initially accumulated in the cytoplasm as soluble unfolded polypeptides and thus were able to access a protein export pathway. Consistent with this model, an intrinsically unfoldable, hydrophilic, non-secretory polypeptide was quantitatively exported from the E. coli cytoplasm into an osmotically-sensitive compartment. Our results support the conclusion that a soluble, unfolded conformation alone may be sufficient to direct non-secretory polypeptides into a protein export pathway for signal peptide-independent translocation across the inner membrane, and that export rather than degradation by cytoplasmic proteases is the preferred fate for newly-synthesized, soluble, unfolded polypeptides that accumulate in the cytoplasm. The stable folded conformation of exported GroEL client proteins further suggests that the requirement for GroEL may be conditional on protein folding in the molecularly-crowded environment of the cytoplasm.

  11. 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.

  12. 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.

  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; 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

  14. 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...

  15. 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...

  16. 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...

  17. 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...

  18. 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 ...

  19. 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

  20. 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

  1. 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...

  2. 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...

  3. 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...

  4. 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.

  5. 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

  6. 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

  7. 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

  8. 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...

  9. 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

  10. 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...

  11. 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...

  12. 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

  13. 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

  14. 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...

  15. 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

  16. 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.

  17. 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

  18. 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

  19. 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

  20. 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...

  1. 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

  2. Shelling Percentage in Grain Sorghum.

    E-Print Network [OSTI]

    Conner, A. B. (Arthur Benjamin)

    1922-01-01T23:59:59.000Z

    . REINHARD, B. S., Entomolo~ist L. R. \\\\'atson, A. M., Apiculturist C. S. RUDE, B. S , EntornoIo~isf A. H. ALEX, B. S., Queen Breeder \\V P. TRICE. B. S., Assrstant Entomologist AGRONOMY A. B. CONNER R. S Chief- Crops . A. H. ~Ernrc,; B. s:: ~gro...

  3. Visiting a farm farmers' mar

    E-Print Network [OSTI]

    in wash produc you remove t spoil faster. Wash all pro thoroughly w running wate f the peel the moistur e before plac the coating c duce with cool, er, even ormation: xas.com the Garden Gro grams: Food Saf xas A&M AgriLife n, dry, well t: bananas, toes, and store in the tarines, the ags

  4. Water Resources Research Center Annual Technical Report

    E-Print Network [OSTI]

    Water Resources Research Center Annual Technical Report FY 1999 Introduction PROGRAM REPORT FLORIDA WATER RESOURCES RESEARCH CENTER FEDERAL GRANT NO. 1434-HQ-96-GRO2663 PERIOD: March 1, 1999 - February 29, 2000 The Water Resources Research Center (WRRC) was re-established as a separate entity from

  5. Evaluation of the Dairy/Yeast Prebiotic, Grobiotic-A, in the Diet of Juvenile Nile Tilapia, Oreochromis niloticus

    E-Print Network [OSTI]

    Peredo, Anjelica

    2012-02-14T23:59:59.000Z

    Two different feeding trials were conducted to evaluate the effects of dietary supplementation with the dairy/yeast prebiotic GroBiotic-A (GBA) to Nile tilapia diets. A nutritionally complete basal diet was supplemented with GBA at either 1 or 2...

  6. Isotopic and microbial indicators of sewage pollution from Stone Town, Zanzibar, Tanzania

    E-Print Network [OSTI]

    Harvell, Catherine Drew

    , such as Enterococcus (ENT) and Escherichia coli, as used by the USEPA (Gro, Washington, DC, USA c Institute of Marine Sciences, University of Dar es Salaam, Zanzibar, Tanzania a r t i c pro- vided by marine ecosystems, (Harvell et al., 2004; Pastorok and Bilyard, 1985

  7. 2. Klausur Kontinuumsmechanik -WS11/12, Prof. Dr. rer. nat. V. Popov Losungshinweise Seite 1 (a) p(y) = W gy (1)

    E-Print Network [OSTI]

    Berlin,Technische Universität

    W gbR2 (8) N = Fy + G = 1 + 2 W gbR2 (9) Der Grenzfall tritt ein, wenn beide Seiten gleich groÃ? - sinh l cosh l (37) Resonanz tritt auf wenn cos l = 0, z.B. l = 2 R = EI A 2l 2 (38) Aufgabe 4 (a) QD

  8. he College of Architecture and Design and the School of Art + Design are meeting the growing

    E-Print Network [OSTI]

    Bieber, Michael

    nonprofit group. The PREtty Fab house in Jersey City (left top row), designed by Assistant Professor Richard Goldman. The PREtty Fab house in Jersey City, designed by Assistant Professor Richard Garber, Nicole-on roles in designing the of the house at GRO. The geometry of the economical 1,600 square foot residence

  9. The effects of in vitro and greenhouse irradiance, fertility, and media on the growth of a hybrid Phalaenopsis orchid

    E-Print Network [OSTI]

    Konow, Elise Ann

    1998-01-01T23:59:59.000Z

    , 2ON-8.6-P-16.6K], DynaGro, and Wilder's, was applied to Phalaenopsis Atien Kaala 'TSC 22' plants grown in either fir bark alone or 70% fir bark and 3 0% Canadian sphagnum peat (bark/peat). Plants grown in the fir bark medium with 2ON-2.2P-I 5.8K...

  10. Solubilization and functional analysis of the lambda holin

    E-Print Network [OSTI]

    Deaton, John Franklin

    2004-11-15T23:59:59.000Z

    -translationally into liposomes. This work will investigate the behavior of GroEL towards membrane proteins. The first of two membrane proteins studied in this respect is Bacteriorhodopsin (BR), a membrane proton pump, from H. halibium. The second is the105aa S protein, a...

  11. My Level of Please comp

    E-Print Network [OSTI]

    Pfeifer, Holger

    a 973150 22 0 1 te orientation p .uniulm.de/io/ tation W Sep I want to s Pla Cla I want to si Pla Cla I want to si Intercultura City Tour (G Library Tou Movie I: " Movie III: I asses & Exam gn up for the acement Test asses & Exam gn up only fo al Training (Gro Group B) ur

  12. Operational Arome New Arome version in test Radar observation Report 2009

    E-Print Network [OSTI]

    Ribes, Aurélien

    , a new version of our Earth-System model has been prepared to guarantee our contributions to the upcoming 5th IPCC report. Consultations with IPSL have started to share a larger part of the Earth System modelling infrastructure. Re- search has largely contributed to the gro- wing offer of Météo

  13. Long-term ice sheetclimate interactions under anthropogenic greenhouse forcing simulated with a complex Earth System Model

    E-Print Network [OSTI]

    Winguth, Arne

    with a complex Earth System Model Miren Vizcai´no Æ Uwe Mikolajewicz Æ Matthias Gro¨ger Æ Ernst Maier-Reimer Æ-millennia simulations have been performed with a complex Earth System Model (ESM) for different anthropogenic climate climate change Á Meridional overturning circulation Á Earth system modelling Á Sea level 1 Introduction

  14. HORTICULTURAL ENTOMOLOGY Tactics for Management of Thrips (Thysanoptera: Thripidae) and

    E-Print Network [OSTI]

    Pappu, Hanu R.

    the use of reßective plastic mulch (Greenough et al. 1990, Stavisky et al. 2002, Reitz et al. 2003), host Springs, FL) and the metallic reßective plastic mulch RepelGro (ReßecTec Foils Inc., Lake Zurich, IL). We,andsilverormetallicreßectivemulch.Averagedoveralltests,theTSWV-resistanttomatoÔBHN444 on silver mulch treatment had the largest effect in terms of reducing thrips and spotted wilt

  15. Measurement of the coefficients of coupling between a critical reactor and a subcritical lattice

    E-Print Network [OSTI]

    Chandler, Ekillis Momon

    1966-01-01T23:59:59.000Z

    . D ' " Gro a ' "l i Ze gr 'Ol' "- SZZ Ce the -'= orp ion cro-s cctior '. grcpnit is loz!er tl n that or:later ~ I bo;h core positions . '. Slid . . ;. :zic. r!Ze s of gr, ?. e is the sa!ae~ Di t nne th -csness of cater is ciz z o" lit ~ viesJ ol...

  16. Isogeometric Simulation of Turbine Blades for Aircraft Engines David Gromann1

    E-Print Network [OSTI]

    Jüttler, Bert

    Isogeometric Simulation of Turbine Blades for Aircraft Engines David Gro�mann1 , Bert Jüttler2, in the challenging field of aircraft engines. We study the deformation of turbine blades under the assumption, manufacturing and repairing turbine engines for aircrafts. A challenging task in this field is the efficient

  17. Analyses of Commercial Fertilizers Sold during 1954-55.

    E-Print Network [OSTI]

    Fudge, J. F.

    1955-01-01T23:59:59.000Z

    Acres Texas Liquid Texas Longhorn Texaphos Tex-Hi Thorobred Tide Green Top Crop Top-0-Texas Top of the World Topper Umbaugh Uramite Uran v-C v-0 Versene Versen-01 Vertagreen Victory Vi goro Vito-Gro Vi t rea Walker's Water Feed...

  18. Analyses of Commercial Fertilizers Sold during 1955-56.

    E-Print Network [OSTI]

    Fudge, J. F.

    1956-01-01T23:59:59.000Z

    Longhorn Texaphos Tex-Hi Thorobred Tide Green Top Crop Top-0-Texas Top of the World Topper Tren Umbaugh Uramite Viking Ship v-C v-0 Versene Versen-01 Vertagreen Victory Vi goro Vito-Gro Vi trea W a1 ker's Water Feed Weber-King Wesco...

  19. JOURNAL DE PHYSIQUE Colloque C6, supplment au n6, Tome h5, juin 198<) page C6-103

    E-Print Network [OSTI]

    Boyer, Edmond

    - perature has been used to compute the properties of hot, dense stellar matter in beta equilibrium of a gro- wing interest. Two are the main reasons for its study. Firstly, high energy heavy ion reactions are obtained by minimising the Free energy of the content of a sphe rical cell of radius Re, imposing charge

  20. 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

  1. 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

  2. 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.

  3. 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.

  4. 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...

  5. Galactic Superluminal Sources

    E-Print Network [OSTI]

    B. A. Harmon

    1998-12-21T23:59:59.000Z

    A new class of X-ray sources was clearly established with the discovery of highly relativistic radio jets from the galactic sources GRS 1915+105 and GRO J1655-40. Both of these objects have given us a broader view of black holes and the formation of jets, yet they also show the complexity of the accretion environment near relativistic objects. The fast apparent motion of the jets, their luminosity and variability, their high energy spectrum, and approximate scaling to the behavior of active galactic nuclei, certainly warrant the description "microquasar". I present a review of the observational data on these sources, and discuss where we stand on a physical picture of GRS 1915+105 and GRO J1655-40 as taken from multi-wavelength studies. I also point out other galactic sources which share some of the properties of the microquasars, and what to look for as a high energy "signature" in future observations.

  6. Aggre gation ofth e ligh tm ode l In th e sim ulation runs th e canopy ve rsion ofLIGNUM is use d.LIGNUM -canopy sim ulate s a juve nile

    E-Print Network [OSTI]

    Kurth, Winfried

    by a gap, using a de taile d radiation m ode l.GRO GRA use s a h e m isph e ricalcove ring ratio be tw e e re ph i is th e inclination angle of th e incom ing radiation (W CR). Re sults Th e aggre gation .Sch m idt.BW INPro Program m zur Bestandesanalyse und Prognose.H andbuch zur Ve rsion 5.1.Nie de rsäch

  7. Relativity at Action or Gamma-Ray Bursts

    E-Print Network [OSTI]

    Tsvi Piran

    1996-07-08T23:59:59.000Z

    Gamma ray Bursts (GRBs) - short bursts of few hundred keV $\\gamma$-rays - have fascinated astronomers since their accidental discovery in the sixties. GRBs were ignored by most relativists who did not expect that they are associated with any relativistic phenomenon. The recent observations of the BATSE detector on the Compton GRO satellite have revolutionized our ideas on these bursts and the picture that emerges shows that GRBs are the most relativistic objects discovered so far.

  8. Do X-ray Binary Spectral State Transition Luminosities Vary?

    E-Print Network [OSTI]

    Thomas J. Maccarone

    2003-08-02T23:59:59.000Z

    We tabulate the luminosities of the soft-to-hard state transitions of all X-ray binaries for which there exist good X-ray flux measurements at the time of the transition, good distance estimates, and good mass estimates for the compact star. We show that the state transition luminosities are at about 1-4% of the Eddington rate, markedly smaller than those typically quoted in the literature, with a mean value of 2%. Only the black hole candidate GRO J~1655-40 and the neutron star systems Aql X-1 and 4U 1728-34 have measured state transition luminosities inconsistent with this value at the 1$\\sigma$ level. GRO J~1655-40, in particular, shows a state transition luminosity below the mean value for the other sources at the $4\\sigma$ level. This result, combined with the known inner disk inclination angle (the disk is nearly parallel to the line of sight) from GRO J~1655-40's relativistic jets suggest that the hard X-ray emitting region in GRO J~1655-40 can have a velocity of no more than about $\\beta=0.68$, with a most likely value of about $\\beta=0.52$, and a minimum speed of $\\beta=0.45$, assuming that the variations in state transition luminosities are solely due to relativistic beaming effects. The variance in the state transition luminosities suggests an emission region with a velocity of $\\sim0.2c$. The results are discussed in terms of different emission models for the low/hard state. We also discuss the implications for measuring the dimensionless viscosity parameter $\\alpha$. We also find that if its state transitions occur at typical luminosities, then GX 339-4 is likely to be at a distance of at least 7.6 kpc, much further than typically quoted estimates.

  9. Vascular Plant Survey of the Canyonlands Unit of the Big Thicket National Preserve, Tyler County, Texas

    E-Print Network [OSTI]

    Haile, Kelly

    2012-10-19T23:59:59.000Z

    list with scientific name, authority and all compared entities for each plant species can be found in Appendix E. T A B LE 2. Definitio n of co des use d to indic ate o rigi n, longevity, and seaso n of gro w... for all the plants collected can be found in Appendix A. Checklist of the Vascular Plants of the Canyonlands Unit of the Big Thicket National Preserve Pteridophyta ASPLENIACEAE Asplenium platyneuron (L.) B.S.P N P W BLECHNACEAE...

  10. 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.

  11. 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...

  12. 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.

  13. 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.

  14. Observation of solar high energy gamma and X-ray emission and solar energetic particles

    E-Print Network [OSTI]

    Struminsky, Alexei

    2015-01-01T23:59:59.000Z

    We considered 18 solar flares observed between June 2010 and July 2012, in which high energy >100 MeV {\\gamma}-emission was registered by the Large Area Telescope (LAT) aboard FermiGRO. We examined for these {\\gamma}-events soft X-ray observations by GOES, hard X-ray observations by the Anti-Coincidence Shield of the SPectrometer aboard INTEGRAL (ACS SPI) and the Gamma-Ray burst Monitor (GBM) aboard FermiGRO. Hard X-ray and {\\pi}0-decay {\\gamma}-ray emissions are used as tracers of electron and proton acceleration, respectively. Bursts of hard X-ray were observed by ACS SPI during impulsive phase of 13 events. Bursts of hard X-ray >100 keV were not found during time intervals, when prolonged hard {\\gamma}-emission was registered by LAT/FermiGRO. Those events showing prolonged high-energy gamma-ray emission not accompanied by >100 keV hard X-ray emission are interpreted as an indication of either different acceleration processes for protons and electrons or as the presence of a proton population accelerated du...

  15. 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...

  16. 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.

  17. 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.

  18. 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.

  19. 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...

  20. 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...

  1. 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

  2. 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.

  3. 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

  4. 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

  5. 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

  6. 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

  7. 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

  8. 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

  9. 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.

  10. .-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

  11. 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

  12. 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

  13. 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 ...

  14. 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.

  15. 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

  16. 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

  17. 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

  18. 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

  19. 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

  20. 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

  1. 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

  2. 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

  3. 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

  4. 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

  5. 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

  6. 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

  7. 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

  8. 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

  9. 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

  10. 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

  11. 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

  12. 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.

  13. 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.

  14. 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

  15. 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

  16. 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

  17. 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.

  18. 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

  19. 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

  20. 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

  1. 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

  2. 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...

  3. 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).

  4. 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

  5. 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

  6. 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

  7. 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

  8. 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

  9. 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

  10. 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

  11. 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)-...

  12. 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

  13. 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

  14. 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

  15. 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

  16. 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 ...

  17. 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

  18. Recreational conflict: an exploration of the role of tolerance

    E-Print Network [OSTI]

    Ivy, Mark Ian

    1990-01-01T23:59:59.000Z

    d I u \\ / tidy 4 GII(f Pf Mexico v erglodes City sea&s, ~hugo oskee 's 's Evergludes National Parts \\ I I I I e~ I ssy I Flamingo s rtoridd d ~ d Miami jar Key West Scale 1" = 20 miles Atlantic Ocean ~i. Map of South Florida 23... at campsite areas . . . . . . . . I 2 3 4 5 i. cleanliness of restroom f cilities. . . , , , . . . . . . I 2 3 4 5 type of csmpsit area' 1) beach site. 1 2 3 4 5 2) gro nd site ( ith o b ach ares) 2 3 4 5 3) chickee (r ised platform) 1 2 3 4 5 2. IP...

  19. Production and Management of Small Grains for Forage.

    E-Print Network [OSTI]

    Holt, E. C.; Norris, M. J.; Lancaster, J. A.

    1969-01-01T23:59:59.000Z

    . Rainfall excessive for maximum gro\\ytb may occur, especially in the coastal area. Reduced sunlight energy during the ~~inttr months apparently limits growth of small grain. Planting rates and methods do not seem to a1tt.r this response significantly... that the tillering ( zcteristic of small grains tends to comper For lower plant populations whether from 1( seeding rates or wider row spacings Treatment Pounds of Row spacing, Pounds of air-dry forage ~nches seed per acre per acre The growth of winter...

  20. Urinary kynurenic and xanthurenic acids of the dog before and after the injection of a convulsive dose of 1,1-dimethylhydrazine

    E-Print Network [OSTI]

    Dixon, Dock Franklin

    1965-01-01T23:59:59.000Z

    'ferent structures. Disloc=tion theory is not directly a plicable bec use it does not explcin why most of the whis!. ers h. ;ve in- cre'. sin- cross a=etio=el -recs fromi b se to ti . Dis- loc"tion theory predicts that t' e cross sectional area of a wh1sl:er s... History of 11hislcers Di sloe, "-, ti on Theory. Importance of ManGanous Oxide 'Ahisl-ers. . . . 11 I I . GRO". lTR ApJ3 . rstus, ExDerimcntsi F "occdure Results, Groirth Mechanism. III. OPTICAL 1 1CRCSCOIE STDDI:S Cl=-s. . ific"-tion ;. nd...

  1. Predicting spin of compact objects from their QPOs: A global QPO model

    E-Print Network [OSTI]

    Banibrata Mukhopadhyay

    2008-09-19T23:59:59.000Z

    We establish a unified model to explain Quasi-Periodic-Oscillation (QPO) observed from black hole and neutron star systems globally. This is based on the accreting systems thought to be damped harmonic oscillators with higher order nonlinearity. The model explains multiple properties parallelly independent of the nature of the compact object. It describes QPOs successfully for several compact sources. Based on it, we predict the spin frequency of the neutron star Sco X-1 and the specific angular momentum of black holes GRO J1655-40, GRS 1915+105.

  2. Grupo Alfonso Gallardo | 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 Siteof Energy 2,AUDIT REPORTEnergyFarms A SUKHydrogen CompanyGroSolar formerly

  3. Grupo Cobra | 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 Siteof Energy 2,AUDIT REPORTEnergyFarms A SUKHydrogen CompanyGroSolar formerlyCobra Jump

  4. Grupo Enerpal | 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 Siteof Energy 2,AUDIT REPORTEnergyFarms A SUKHydrogen CompanyGroSolar formerlyCobra

  5. Grupo Portocarrio S A | 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 Siteof Energy 2,AUDIT REPORTEnergyFarms A SUKHydrogen CompanyGroSolar

  6. Grupo Samca | 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 Siteof Energy 2,AUDIT REPORTEnergyFarms A SUKHydrogen CompanyGroSolarSamca Jump to:

  7. Grupo San Jose | 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 Siteof Energy 2,AUDIT REPORTEnergyFarms A SUKHydrogen CompanyGroSolarSamca Jump to:Jose

  8. GuangZhou ZhongKe HengYuan Energy Tenchnology Co Ltd ZKenergy | 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 being directedAnnual Siteof Energy 2,AUDIT REPORTEnergyFarms A SUKHydrogen CompanyGroSolarSamca Jump

  9. Guangdong Baolihua New Energy Corporation | 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 Siteof Energy 2,AUDIT REPORTEnergyFarms A SUKHydrogen CompanyGroSolarSamca JumpGuangdong

  10. Guangdong Fivestar Solar Energy | 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 Siteof Energy 2,AUDIT REPORTEnergyFarms A SUKHydrogen CompanyGroSolarSamca

  11. Guangdong Guohua New Energy Investment Co Ltd | 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 Siteof Energy 2,AUDIT REPORTEnergyFarms A SUKHydrogen CompanyGroSolarSamcaGuohua New

  12. Guangdong Mingyang Wind Power Technology Co Ltd | 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 Siteof Energy 2,AUDIT REPORTEnergyFarms A SUKHydrogen CompanyGroSolarSamcaGuohua

  13. Guangdong Yueneng Co Ltd | 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 Siteof Energy 2,AUDIT REPORTEnergyFarms A SUKHydrogen CompanyGroSolarSamcaGuohuaYueneng Co

  14. Guanghui New Energy Co Ltd | 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 Siteof Energy 2,AUDIT REPORTEnergyFarms A SUKHydrogen CompanyGroSolarSamcaGuohuaYueneng

  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. Control of the Pyrimidine biosynthetic pathway in different strains of Salmonella typhimurium

    E-Print Network [OSTI]

    Smith, Johnny Melven

    1974-01-01T23:59:59.000Z

    (2 (S121) 22 20 1. 1 1. 1 ~ able B. 1 r'si n Wrlo iype Levels of 0 I Case aq c B pacific fctiv'ty Specific Rc ivity Fold 0 repress'on LT2 (51) 119 17H u, i a, u. . ~l) 112 BB S+rains sere oro. . n on minimal media '. . ) S+raina were gro... ioe 3, 2 192 3. 0 a) 5tz'a '. ns w re crown nn minimal media:upplement d wi. "5 uraci 1, 5) 5t-sins growth were grown on 10 ug per ml of uracil and calle were harvested after had -e-, 'ad fc- 00 min. were grown on 50 uo per ml n u~ a . il and c...

  18. Towards 4U 1630-47: a black-hole soft X-ray transient odyssey

    E-Print Network [OSTI]

    Erik Kuulkers

    1998-08-12T23:59:59.000Z

    4U 1630-47 is a black-hole X-ray transient with one of the shortest recurrence times. Despite its regular outburst behaviour little is known about this source. Only recently has attention to this system increased. I discuss there the basic known (X-ray) properties of 4U 1630-47 and report on X-ray and radio observations obtained during its recent outburst, starting in 1998 February. These observations strengthen some of the similarities seen between 4U 1630-47 and the Galactic superluminal sources GRO J1655-40 and GRS 1915+105, and provide the first detection of 4U 1630-47 in the radio. Using an updated outburst ephemeris I predict the next outburst to occur about a week before Christmas 1999.

  19. Opto-thermal analysis of a lightweighted mirror for solar telescope

    E-Print Network [OSTI]

    Banyal, Ravinder K; Chatterjee, S

    2013-01-01T23:59:59.000Z

    In this paper, an opto-thermal analysis of a moderately heated lightweighted solar telescope mirror is carried out using 3D finite element analysis (FEA). A physically realistic heat transfer model is developed to account for the radiative heating and energy exchange of the mirror with surroundings. The numerical simulations show the non-uniform temperature distribution and associated thermo-elastic distortions of the mirror blank clearly mimicking the underlying discrete geometry of the lightweighted substrate. The computed mechanical deformation data is analyzed with surface polynomials and the optical quality of the mirror is evaluated with the help of a ray-tracing software. The thermal print-through distortions are further shown to contribute to optical figure changes and mid-spatial frequency errors of the mirror surface. A comparative study presented for three commonly used substrate materials, namely, Zerodur, Pyrex and Silicon Carbide (SiC) is relevant to vast area of large optics requirements in gro...

  20. The pneumatic conveyor as a continuous-flow mixer

    E-Print Network [OSTI]

    Stipe, Dennis Ray

    1964-01-01T23:59:59.000Z

    ~onyeyev, , Mct Shooing ti~ gnetal1a?? ' j ' 444K ?'= Qe~$eaeieetev" %g"4g-'-Re1(no e:GRo-' f'fen$f olfe' Qy:etiam ~eh" fN'M ~" tO !' . . . -. . . the -Yeno~et&4'. - 4 p::y -. '4 e, . s-. . ~:, :?- s=-~-. '. -, ' =i=, - -. 'll -'-', ' J 3~;~ Fi'". r...Sn', seems to. ccdtrc3 the re~qdired. %fr aloof ty Xt xcbst be. pcinte3-. oct that. ;the veloc. 'ties recorded "-, --, " --. . fxere, "are' air-'-veto'c&4es, :@n8 mct=;~iso'iif aT' velocith, s ~, ; A2so, ? it is gmbable, t&mt-' the min'~a~z. air vole...

  1. Progress with the real-time GRB coordinates distribution network (BACODINE)

    SciTech Connect (OSTI)

    Barthelmy, S. D.; Butterworth, P. S.; Cline, T. L.; Gehrels, N.; Fishman, G. J.; Kouveliotou, C.; Meegan, C.; Hurley, K. [USRA NASA-GSFC, Code 661, Greenbelt, Maryland 20771 (United States); STX NASA-GSFC, Code 661, Greenbelt, Maryland 20771 (United States); NASA-GSFC, Code 661, Greenbelt, Maryland 20771 (United States); NASA-MSFC, Code ES-81, Huntsville, Alabama 35812 (United States); UC Berkeley SSL, Berkeley, California 94720 (United States)

    1996-08-01T23:59:59.000Z

    The RA, Dec coordinates of gamma-ray burst (GRB) sources observed with BATSE on GRO are automatically determined and distributed in real time to members of the global scientific community. These data are now being used by 27 operations to enable searches for associated transients in a variety of other wavelength or energy regimes to identify the burst source objects. The minimum total delay time from the onset of a GRB to the receipt of its coordinates by distant experimenters can be under 4 sec, less than the duration of a typical GRB, and the maximum total delay is 7 sec, or longer, depending on the distribution method. Recent improvements to the BACODINE system and some future improvements are discussed. A summary of the follow-up observations made by the BACODINE sites is given.

  2. The Power of Space: The Acropolis, the Theatre of Dionysos, and Tragedy in the 5th Century BCE

    E-Print Network [OSTI]

    Bondari, Katrina

    2011-05-19T23:59:59.000Z

    :NRFNAhWHCRLWPD:PWNEFAPRF: WyPFOWLADBNABD:LW BDRFoWPFARuBRAOIW5BAWAC:WyELAW D:NEoFRnP5G:WAEWAC:WBFADPRF: W:O:WAE POWRLWAC:WHC:PAD:WEpWdREFOLELWACPAWD:LALWEFWAC: LEBACWLGEY:WEpWAC:WSNDEYEGRLWriGPA:Wbgh HCRLWLADBNABD:WPF WRALWGENPAREFWEFWAC:WLGEY:WEpWAC:WSNDEYEGRLWYRuB: Wy...:WLPAWEFWAC:WLGEY:WEpWAC:WslPervW FBNG:BLatCRG:WpBFNAREFRFoWPLWYPDAWEpWPWD:GRoREBLWYD:NRFNAhWlPURFoWsBLAWD:P WqPDURFW .PDGLEFvLWnPpEuralmanuimlidpIEu.a LuayudelteEralma Luptiua?iELetuEt?u?mWpEBF WAC: AC:PAD:vLWGENPAREFWRFWAC:WEU:DGPYW5:At::FWAC:WSNDEYEGRLWPF WAC:WdREFOLELWYD:NRFNAW b...

  3. On the Misalignment of Jets in Microquasars

    E-Print Network [OSTI]

    Thomas J. Maccarone

    2002-09-05T23:59:59.000Z

    We discuss the timescales for alignment of black hole and accretion disc spins in the context of binary systems. We show that for black holes that are formed with substantial angular momentum, the alignment timescales are likely to be at least a substantial fraction of the systems' lifetimes. This result explains the observed misalignment of the disc and the jet in the microquasar GRO J 1655-40 and in SAX J 1819-2525 as being likely due to the Bardeen-Petterson effect. We discuss the implications of these results on the mass estimate for GRS 1915+105, which has assumed the jet is perpendicular to the orbital plane of the system and may hence be an underestimate. We show that the timescales for the spin alignment in Cygnus X-3 are consistent with the likely misalignment of disc and jet in that system, and that this is suggested by the observational data.

  4. Interim Results from Alternative Fuel Truck Evaluation Project

    SciTech Connect (OSTI)

    Kevin L. Chandler; Paul Norton; Nigel Clark

    1999-05-03T23:59:59.000Z

    The objective of this project, which is supported by the U.S. Department of Energy (DOE) through the National Renewable Energy Laboratory (NREL), is to provide a comprehensive comparison of heavy-duty trucks operating on alternative fuels and diesel fuel. Data collection from up to eight sites is planned. Currently, the project has four sites: Raley's in Sacramento, CA (Kenworth, Cummins LlO-300G, liquefied natural gas - LNG); Pima Gro Systems, Inc. in Fontana, CA (White/GMC, Caterpillar 31768 Dual-Fuel, compressed natural gas - CNG); Waste Management in Washington, PA (Mack, Mack E7G, LNG); and United Parcel Service in Hartford, CT (Freightliner Custom Chassis, Cummins B5.9G, CNG). This paper summarizes current data collection and evaluation results from this project.

  5. The influence of temperatures and mechanical treatments on pre- and post-emergence growth of peach and plum seedlings

    E-Print Network [OSTI]

    Alsalih, Kamil Khidher

    1961-01-01T23:59:59.000Z

    , the possibility of variation between speoies SCAPI ICI ~ ~ IA NI A ~ ~ ~ 0 0 0 ~ ~ O IO Ch 33m R R CII CII CII ~ ~ A 4 SI S 0 0 0 '4l Q 4l Q s CII r 0 O ~ ~ as ~8 ~gA ICI IO 0 N Ill OE 0 CIA CIN Ch CO ~ ~ ~ t N ~ ~ 0 CCI ICI 0 0 0...W goeio4 oo ~. f As ooe ~ oero. eheea&eriheIL Q aeero%o areae ia i' piIaoale. Q4e oeaooivagg coal, 4 have hoea oaaee4 Q %he high O~erafeee, '()IIkaeee 4; ea4 0)? . gheee eee4lxlwge 4L4 aos groo ee sapL41p ehoa tirei Osaaeferro4 4e ~ gro hoaa? ?e 4L4...

  6. Structure of Glycerol Dehydratase Reactivase: A New Type of Molecular Chaperone

    SciTech Connect (OSTI)

    Liao, Der-Ing; Reiss, Lisa; Turner, Jr., Ivan; Dotson, Garry (Dupont)

    2010-03-08T23:59:59.000Z

    The function of glycerol dehydratase (GDH) reactivase is to remove damaged coenzyme B{sub 12} from GDH that has suffered mechanism-based inactivation. The structure of GDH reactivase from Klebsiella pneumoniae was determined at 2.4 {angstrom} resolution by the single isomorphous replacement with anomalous signal (SIR/AS) method. Each tetramer contains two elongated 63 kDa {alpha} subunits and two globular 14 kDa {beta} subunits. The {alpha} subunit contains structural features resembling both GroEL and Hsp70 groups of chaperones, and it appears chaperone like in its interactions with ATP. The fold of the {beta} subunit resembles that of the {beta} subunit of glycerol dehydratase, except that it lacks some coenzyme B12 binding elements. A hypothesis for the reactivation mechanism of reactivase is proposed based on these structural features.

  7. Global Analysis of Heat Shock Response in Desulfovibrio vulgaris Hildenborough.

    SciTech Connect (OSTI)

    Chhabra, S.R.; He, Q.; Huang, K.H.; Gaucher, S.P.; Alm, E.J.; He,Z.; Hadi, M.Z.; Hazen, T.C.; Wall, J.D.; Zhou, J.; Arkin, A.P.; Singh, A.K.

    2005-09-16T23:59:59.000Z

    Desulfovibrio vulgaris Hildenborough belongs to a class ofsulfate-reducing bacteria (SRB) and is found ubiquitously in nature.Given the importance of SRB-mediated reduction for bioremediation ofmetal ion contaminants, ongoing research on D. vulgaris has been in thedirection of elucidating regulatory mechanisms for this organism under avariety of stress conditions. This work presents a global view of thisorganism's response to elevated growth temperature using whole-celltranscriptomics and proteomics tools. Transcriptional response (1.7-foldchange or greater; Z>1.5) ranged from 1,135 genes at 15 min to 1,463genes at 120 min for a temperature up-shift of 13oC from a growthtemperature of 37oC for this organism and suggested both direct andindirect modes of heat sensing. Clusters of orthologous group categoriesthat were significantly affected included posttranslationalmodifications; protein turnover and chaperones (up-regulated); energyproduction and conversion (down-regulated), nucleotide transport,metabolism (down-regulated), and translation; ribosomal structure; andbiogenesis (down-regulated). Analysis of the genome sequence revealed thepresence of features of both negative and positive regulation whichincluded the CIRCE element and promoter sequences corresponding to thealternate sigma factors ?32 and ?54. While mechanisms of heat shockcontrol for some genes appeared to coincide with those established forEscherichia coli and Bacillus subtilis, the presence of unique controlschemes for several other genes was also evident. Analysis of proteinexpression levels using differential in-gel electrophoresis suggestedgood agreement with transcriptional profiles of several heat shockproteins, including DnaK (DVU0811), HtpG (DVU2643), HtrA (DVU1468), andAhpC (DVU2247). The proteomics study also suggested the possibility ofposttranslational modifications in the chaperones DnaK, AhpC, GroES(DVU1977), and GroEL (DVU1976) and also several periplasmic ABCtransporters.

  8. Dose, exposure time, and resolution in Serial X-ray Crystallography

    SciTech Connect (OSTI)

    Starodub, D; Rez, P; Hembree, G; Howells, M; Shapiro, D; Chapman, H N; Fromme, P; Schmidt, K; Weierstall, U; Doak, R B; Spence, J C

    2007-03-22T23:59:59.000Z

    Using detailed simulation and analytical models, the exposure time is estimated for serial crystallography, where hydrated laser-aligned proteins are sprayed across a continuous synchrotron beam. The resolution of X-ray diffraction microscopy is limited by the maximum dose that can be delivered prior to sample damage. In the proposed Serial Crystallography method, the damage problem is addressed by distributing the total dose over many identical hydrated macromolecules running continuously in a single-file train across a continuous X-ray beam, and resolution is then limited only by the available fluxes of molecules and X-rays. Orientation of the diffracting molecules is achieved by laser alignment. We evaluate the incident X-ray fluence (energy/area) required to obtain a given resolution from (1) an analytical model, giving the count rate at the maximum scattering angle for a model protein, (2) explicit simulation of diffraction patterns for a GroEL-GroES protein complex, and (3) the frequency cut off of the transfer function following iterative solution of the phase problem, and reconstruction of a density map in the projection approximation. These calculations include counting shot noise and multiple starts of the phasing algorithm. The results indicate the number of proteins needed within the beam at any instant for a given resolution and X-ray flux. We confirm an inverse fourth power dependence of exposure time on resolution, with important implications for all coherent X-ray imaging. We find that multiple single-file protein beams will be needed for sub-nanometer resolution on current third generation synchrotrons, but not on fourth generation designs, where reconstruction of secondary protein structure at a resolution of 7 {angstrom} should be possible with short (below 100 s) exposures.

  9. 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.

  10. 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.

  11. 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

  12. 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...

  13. 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...

  14. 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...

  15. 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\

  16. 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.

  17. 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...

  18. 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.

  19. 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...

  20. 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.

  1. 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...

  2. 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...

  3. 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...

  4. 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.

  5. 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...

  6. 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.

  7. 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...

  8. 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...

  9. 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...

  10. 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

  11. 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...

  12. 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...

  13. 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...

  14. 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...

  15. 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

  16. 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

  17. 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.

  18. 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.

  19. 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.

  20. 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.

  1. 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...

  2. 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.

  3. 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.

  4. 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.

  5. 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.

  6. 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...

  7. 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.

  8. 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.

  9. 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.

  10. 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.

  11. 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

  12. 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

  13. 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...

  14. 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

  15. 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...

  16. 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.

  17. 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.

  18. 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.

  19. 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...

  20. 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...

  1. 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.

  2. 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.

  3. 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.

  4. 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.

  5. 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].

  6. 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...

  7. 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.

  8. 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.

  9. 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.

  10. 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.

  11. 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.

  12. 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...

  13. 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...

  14. 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.

  15. 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.

  16. 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.

  17. 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...

  18. X-RED: A Satellite Mission Concept To Detect Early Universe Gamma Ray Bursts

    E-Print Network [OSTI]

    Krumpe, M; Cherix, M; Coffey, D; Deroo, P; Egger, G; Hasinger, G; Hoffmann, A I D; Lefever, K; Liermann, A; Lund, N; Parmar, A; Russo, P; Steiper, J; Strodl, T; Vilardell, F; Wahlin, R; Albrecht, Simon; Cherix, Marc; Coffey, Deirdre; Deroo, Pieter; Egger, Georg; Hasinger, Guenther; Hoffmann, Agnes I.D.; Krumpe, Mirko; Lefever, Karolien; Liermann, Adriane; Lund, Niels; Parmar, Arvind; Russo, Pedro; Steiper, Joerg; Strodl, Thomas; Vilardell, Francesc; Wahlin, Rurik

    2005-01-01T23:59:59.000Z

    Gamma ray bursts (GRBs) are the most energetic eruptions known in the Universe. Instruments such as Compton-GRO/BATSE and the GRB monitor on BeppoSAX have detected more than 2700 GRBs and, although observational confirmation is still required, it is now generally accepted that many of these bursts are associated with the collapse of rapidly spinning massive stars to form black holes. Consequently, since first generation stars are expected to be very massive, GRBs are likely to have occurred in significant numbers at early epochs. X-red is a space mission concept designed to detect these extremely high redshifted GRBs, in order to probe the nature of the first generation of stars and hence the time of reionisation of the early Universe. We demonstrate that the gamma and x-ray luminosities of typical GRBs render them detectable up to extremely high redshifts (z~10-30), but that current missions such as HETE2 and SWIFT operate outside the observational range for detection of high redshift GRB afterglows. Therefo...

  19. Multi-wavelength identification of high-energy sources

    E-Print Network [OSTI]

    Mignani, R P

    2009-01-01T23:59:59.000Z

    The nature of most of the ~300 high-energy gamma-ray sources discovered by the EGRET instrument aboard the Gamma-ray Observatory (GRO) between 1991 and 1999 is one of the greatest enigmas in high-energy astrophysics. While about half of the extragalactic sources have been optically identified with Active Galactic Nuclei (AGN), only a meagre 10% of the galactic sources have a reliable identification. This low success rate has mainly to be ascribed to the local crowding of potential optical counterparts and to the large gamma-ray error boxes (of the order of one degree in radius) which prevented a straightforward optical identification. Indeed, a multi-wavelength identification strategy, based on a systematic coverage of the gamma-ray error boxes, has been the only do-able approach. The situation is now greatly improving thanks to the observations performed by the Fermi Gamma-ray Space Telescope which, thanks to the LAT instrument, provides a factor of 50 improvement in sensitivity and a factor of 10 improvemen...

  20. Earth occultation technique with EGRET calorimeter data above 1 MeV

    SciTech Connect (OSTI)

    Dingus, Brenda L. [University of Utah, Salt Lake City, Utah 84112 (United States); Bertsch, D. L. [NASA/Goddard Space Flight Center, Greenbelt, Maryland 20771 (United States); Schneid, E. J. [Northrop-Grumman, Bethpage, New York 11714 (United States)

    1997-05-10T23:59:59.000Z

    The technique of earth occultation has produced many exciting results from the BATSE data. We examine the possibility of using this technique on the Total Absorption Shower Calorimeter (TASC) of EGRET. The TASC has an effective area of a few 1000 cm{sup 2} and is 8 radiation lengths deep. Spectra from 1-200 MeV are collected every 33 sec and the rate at 4 energies is monitored every 2 sec. The detector is unshielded and uncollimated so the background is large. The statistical error on the background measurements require several days of exposure to detect the Crab at the lowest energies. Longer exposures would be needed due to systematic errors in determining the background. However, the wide field of view (the effective area is nearly 1000 cm{sup 2} even through the back of the spacecraft) could be used to monitor variability and confirm fluxes of sources such as the black hole candidates, Cyg X-1 and GRO J0422+33.

  1. Kinematic Density Waves in Accretion Disks

    E-Print Network [OSTI]

    Svetlin Tassev; Edmund Bertschinger

    2008-10-14T23:59:59.000Z

    When thin accretion disks around black holes are perturbed, the main restoring force is gravity. If gas pressure, magnetic stresses, and radiation pressure are neglected, the disk remains thin as long as orbits do not intersect. Intersections would result in pressure forces which limit the growth of perturbations. We find that a discrete set of perturbations is possible for which orbits remain non-intersecting for arbitrarily long times. These modes define a discrete set of frequencies. We classify all long-lived perturbations for arbitrary potentials and show how their mode frequencies are related to pattern speeds computed from the azimuthal and epicyclic frequencies. We show that modes are concentrated near radii where the pattern speed has vanishing radial derivative. We explore these modes around Kerr black holes as a possible explanation for the high-frequency quasi-periodic oscillations of black hole binaries such as GRO J1655-40. The long-lived modes are shown to coincide with diskoseismic waves in the limit of small sound speed. While the waves have long lifetime, they have the wrong frequencies to explain the pairs of high-frequency quasi-periodic oscillations observed in black hole binaries.

  2. New mechanism for lightning initiation

    SciTech Connect (OSTI)

    Roussel-Dupre, R.; Buchwald, M.; Gurevich, A. [Lebedev Institute of Physical Sciences, Moscow (Russian Federation)] [and others

    1996-10-01T23:59:59.000Z

    This is the final report of a three-year, Laboratory-Directed Research and Development (LDRD) project at the Los Alamos National Laboratory (LANL). To distinguish radio-frequency (rf) signals generated by lightning from the electromagnetic pulse produced by a nuclear explosion, it is necessary to understand the fundamental nature of thunderstorm discharges. The recent debate surrounding the origin of transionospheric pulse pairs (TIPPs) detected by the BLACKBEARD experiment aboard the ALEXIS satellite illustrates this point. We have argued that TIPP events could originate from the upward propagating discharges recently identified by optical images taken from the ground, from airplanes, and from the space shuttle. In addition, the Gamma Ray Observatory (GRO) measurements of x-ray bursts originating from thunderstorms are almost certainly associated with these upward propagating discharges. When taken together, these three measurements point directly to the runaway electron mechanism as the source of the upward discharges. The primary goal of this research effort was to identify the specific role played by the runaway-air-breakdown mechanism in the general area of thunderstorm electricity and in so doing develop lightning models that predict the optical, rf, and x-ray emissions that are observable from space.

  3. 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.

  4. GRBs and Hypernova Explosions of Some Galactic Sources

    E-Print Network [OSTI]

    G. E. Brown; C. -H. Lee; E. Moreno Mendez

    2007-10-29T23:59:59.000Z

    Knowing the Kerr parameters we can make quantitative calculations of the rotational energy of black holes. We show that Nova Sco (GRO J1655 - 40), Il Lupi (4U 1543 - 47), XTE J1550 - 564 and GS 2023 + 338 are relics of gamma-ray burst (GRB) and Hypernova explosions. They had more than enough rotational energy to power themselves. In fact, they had so much energy that they would have disrupted the accretion disk of the black hole that powered them by the communicated rotational energy, so that the energy delivery was self limiting. The most important feature in producing high rotational energy in the binary is low donor (secondary star) mass. We suggest that V4641 Sgr (XTE J1819 - 254) and GRS 1915 + 105 underwent less energetic explosions; because of their large donor masses. These explosions were one or two orders of magnitude lower in energy than that of Nova Sco. Cyg X - 1 (1956 + 350) had an even less energetic explosion, because of an even larger donor mass. We find that in the evolution of the soft X-ray transient sources the donor (secondary star) is tidally locked with the helium star, which evolved from the giant, as the hydrogen envelope is stripped off in common envelope evolution. The tidal locking is transferred from the helium star to the black hole into which it falls. Depending on the mass of the donor, the black hole can be spun up to the angular momentum necessary to power the GRB and Hypernova explosion. The donor decouples, acting as a passive witness to the explosion which, for the given angular momentum, then proceeds as in the Woosley Collapsar model. High mass donors which tend to follow from low metallicity give long GRBs because their lower energy can be accepted by the central engine.

  5. X-RED: A Satellite Mission Concept To Detect Early Universe Gamma Ray Bursts

    E-Print Network [OSTI]

    Mirko Krumpe; Deirdre Coffey; Georg Egger; Francesc Vilardell; Karolien Lefever; Adriane Liermann; Agnes I. D. Hoffmann; Joerg Steiper; Marc Cherix; Simon Albrecht; Pedro Russo; Thomas Strodl; Rurik Wahlin; Pieter Deroo; Arvind Parmar; Niels Lund; Guenther Hasinger

    2005-11-10T23:59:59.000Z

    Gamma ray bursts (GRBs) are the most energetic eruptions known in the Universe. Instruments such as Compton-GRO/BATSE and the GRB monitor on BeppoSAX have detected more than 2700 GRBs and, although observational confirmation is still required, it is now generally accepted that many of these bursts are associated with the collapse of rapidly spinning massive stars to form black holes. Consequently, since first generation stars are expected to be very massive, GRBs are likely to have occurred in significant numbers at early epochs. X-red is a space mission concept designed to detect these extremely high redshifted GRBs, in order to probe the nature of the first generation of stars and hence the time of reionisation of the early Universe. We demonstrate that the gamma and x-ray luminosities of typical GRBs render them detectable up to extremely high redshifts (z~10-30), but that current missions such as HETE2 and SWIFT operate outside the observational range for detection of high redshift GRB afterglows. Therefore, to redress this, we present a complete mission design from the science case to the mission architecture and payload, the latter comprising three instruments, namely wide field x-ray cameras to detect high redshift gamma-rays, an x-ray focussing telescope to determine accurate coordinates and extract spectra, and an infrared spectrograph to observe the high redshift optical afterglow. The mission is expected to detect and identify for the first time GRBs with z > 10, thereby providing constraints on properties of the first generation of stars and the history of the early Universe.

  6. 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.

  7. 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.

  8. 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.

  9. 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.

  10. 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.

  11. 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.

  12. 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...

  13. 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.

  14. 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.

  15. 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.

  16. 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.

  17. 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

  18. 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.

  19. 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}.

  20. 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.

  1. 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...

  2. 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.

  3. 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)

  4. 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.

  5. 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.

  6. 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.

  7. 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.

  8. 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.

  9. 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.

  10. 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)

  11. 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.

  12. 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...

  13. 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.

  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.

    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.

  15. 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.

  16. 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 ...

  17. 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...

  18. 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.

  19. 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...

  20. 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.