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Sample records for ho chi minh

  1. Minh Le | Department of Energy

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

    Prior to his current role at the Energy Department, Minh spent his career in industry developing technologies and scaling new technologies to high volume manufacturing. Minh earned ...

  2. Shangri La County Minhe Hydroelectric Development Co Ltd | Open...

    Open Energy Info (EERE)

    Minhe Hydroelectric Development Co Ltd Jump to: navigation, search Name: Shangri-La County Minhe Hydroelectric Development Co., Ltd. Place: Yunnan Province, China Zip: 650051...

  3. 5 Questions about the SunShot Prize for Minh Le - Solar Program...

    Office of Environmental Management (EM)

    Questions about the SunShot Prize for Minh Le - Solar Program Manager at the U.S. Energy Department 5 ... that demonstrate non-hardware costs no higher than 1 per watt for ...

  4. 5 Questions about the SunShot Prize for Minh Le - Solar Program Manager

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

    at the U.S. Energy Department | Department of Energy Questions about the SunShot Prize for Minh Le - Solar Program Manager at the U.S. Energy Department 5 Questions about the SunShot Prize for Minh Le - Solar Program Manager at the U.S. Energy Department September 24, 2012 - 1:46pm Addthis The Energy Department launched the SunShot Prize competition, which offers cash awards for the top three teams that demonstrate non-hardware costs no higher than $1 per watt for small-scale photovoltaic

  5. Chi Mei Optoelectronics CMO | Open Energy Information

    Open Energy Info (EERE)

    search Name: Chi Mei Optoelectronics (CMO) Place: Taiwan Zip: 74147 Product: A LCD TV panels and LCD panel displays producer in Taiwan. References: Chi Mei...

  6. Chi-Nu Level 2 Review

    SciTech Connect (OSTI)

    Haight, Robert Cameron; Lee, Hye Young; Mosby, Shea Morgan; O'Donnell, John M.; Solomon, Clell Jeffrey Jr.; Taddeucci, Terry Nicholas; Fotiadis, Nikolaos; Devlin, Matthew James; Ullmann, John Leonard; Bredeweg, Todd Allen; Jandel, Marian; Nelson, Ronald Owen; Wender, Stephen Arthur; Neudecker, Denise; Rising, Michael Evan; White, Morgan Curtis; Wu, Ching-Yen; Bucher, Brian Michael; Buckner, Matthew Quinn; Henderson, Roger Alan

    2015-09-18

    This series of slides presents information on Chi-Nu measurements and analysis of prompt fission neutron spectra (PFNS) for neutron energy below 1 MeV for 235U. A key focus of the Chi-Nu measurement is to address the energy dependence of the low-energy emissions. The 235U PFNS evaluation is in progress. Chi-Nu delivered preliminary experimental data and input for part of the old experimental data base. The 239Pu PFNS evaluation is finalized and submitted for testing. Data from 252Cf spontaneous fission will also be obtained.

  7. Flight Path 15L - Chi-Nu

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

    L This flight path is primarily used for the Chi-Nu experiments at 22 meters and neutron detector development and calibration at 90 meters. Target 4 Flight Path 15L (Chi-Nu) Target 4 Flight Path 15L (4FP15L) utilizes the neutrons that are produced at an angle of 15-degrees to the incident proton beam from the spallation source. It is unique among the WNR flight paths in that it has two experimental locations available at distances of 22 and 90 meters from the spallation target. The rectangular

  8. Chi-Nu "Gate Review" (Conference) | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    Chi-Nu "Gate Review" Citation Details In-Document Search Title: Chi-Nu "Gate Review" You are accessing a document from the Department of Energy's (DOE) SciTech Connect. This...

  9. Flight Path 15L - About Chi-Nu

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

    About Target 4 Flight Path 15L (Chi-Nu) Target 4 Flight Path 15L (4FP15L) is primarily used for the Chi-Nu experiments at 22 meters and neutron detector development and calibration at 90 meters. The Chi-Nu experimental area is centered 22.50 meters from the spallation target. It has two arrays of neutron detectors which are not usually used concurrently. These arrays are used primarily for detecting prompt fission neutrons or neutrons from elastic or inelastic scattering. For produced neutrons

  10. Flight Path 15L - About Chi-Nu

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

    About Target 4 Flight Path 15L-A (20m) (Chi-Nu) Target 4 Flight Path 15L (4FP15L) is primarily used for the Chi-Nu experiments at 22 meters and neutron detector development and calibration at 90 meters. The Chi-Nu experimental area is centered 22.50 meters from the spallation target. It has two arrays of neutron detectors which are not usually used concurrently. These arrays are used primarily for detecting prompt fission neutrons or neutrons from elastic or inelastic scattering. For produced

  11. YoungHo Shin | Argonne National Laboratory

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

    Photo of YoungHo Shin YoungHo Shin Principal Process Development Engineer Telephone (630) 252-4861 E-mail yshin@anl.gov

  12. Ming-Yang Ho | Photosynthetic Antenna Research Center

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

    Ming-Yang Ho Ming-Yang Ho Ming-Yang Ho Graduate Student E-mail: mxh504@psu.edu Website: Pennsylvania State University Graduate Students...

  13. Microsoft Word - 3215504_1.DOC

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

    Hogan Lovells US LLP is a limited liability partnership registered in the District of Columbia. Hogan Lovells refers to the international legal practice comprising Hogan Lovells US LLP, Hogan Lovells International LLP, Hogan Lovells Worldwide Group (a Swiss Verein), and their affiliated businesses with offices in: Abu Dhabi Alicante Amsterdam Baltimore Beijing Berlin Boulder Brussels Caracas Colorado Springs Denver Dubai Dusseldorf Frankfurt Hamburg Hanoi Ho Chi Minh City Hong Kong Houston

  14. Inclusive. chi. (2 P ) production in. Upsilon. (3 S ) decay

    SciTech Connect (OSTI)

    Morrison, R.; Schmidt, D.; Procario, M.; Johnson, D.R.; Lingel, K.; Rankin, P.; Smith, J.G.; Alexander, J.; Artuso, M.; Bebek, C.; Berkelman, K.; Besson, D.; Browder, T.E.; Cassel, D.G.; Cheu, E.; Coffman, D.M.; Drell, P.S.; Ehrlich, R.; Galik, R.S.; Garcia-Sciveres, M.; Geiser, B.; Gittelman, B.; Gray, S.W.; Hartill, D.L.; Heltsley, B.K.; Honscheid, K.; Kandaswamy, J.; Katayama, N.; Kreinick, D.L.; Lewis, J.D.; Ludwig, G.S.; Masui, J.; Mevissen, J.; Mistry, N.B.; Nandi, S.; Ng, C.R.; Nordberg, E.; O'Grady, C.; Patterson, J.R.; Peterson, D.; Pisharody, M.; Riley, D.; Sapper, M.; Selen, M.; Worden, H.; Worris, M.; Avery, P.; Freyberger, A.; Rodriguez, J.; Yelton, J.; Kinoshita, K.; Pipkin, F.; Wilson, R.; Wolinski, J.; Xiao, D.; Sadoff, A.J.; Ammar, R.; Baringer, P.; Coppage, D.; Davis, R.; Haas, P.; Kelly, M.; Kwak, N.; Lam, H.; Ro, S.; Kubota, Y.; Nelson, J.K.; Perticone, D.; Poling, R.; Schrenk, S.; Alam, M.S.; Kim, I.J.; Nemati, B.; Romero, V.; Sun, C.R.; Wang, P.; Zoeller, M.M.; Cr

    1991-09-23

    Using the CsI calorimeter of the CLEO II detector, the spin triplet {chi}{sub {ital b}}(2{ital P}) states are observed in {Upsilon}(3{ital S}) radiative decays with much higher statistics than seen in previous experiments. The observed mass splittings are not described well by theoretical models, while the relative branching ratios agree with predictions that include relativistic corrections to the radiative transition rates.

  15. S3TEC Seminar - Dr. Cliff Ho, Sandia National Laboratories |...

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

    Dr. Cliff Ho, Sandia National Laboratories Seminar Wednesday Mar 2, 2016 12:00pm Location: 1-150 Speaker: Cliff Ho S3TEC welcomes Dr. Cliff Ho

  16. Electromagnetic Currents and Magnetic Moments in $\\chi$EFT

    SciTech Connect (OSTI)

    Saori Pastore, Luca Girlanda, Rocco Schiavilla, Michele Viviani, Robert Wiringa

    2009-09-01

    A two-nucleon potential and consistent electromagnetic currents are derived in chiral effective field theory ($\\chi$EFT) at, respectively, $Q^{\\, 2}$ (or N$^2$LO) and $e\\, Q$ (or N$^3$LO), where $Q$ generically denotes the low-momentum scale and $e$ is the electric charge. Dimensional regularization is used to renormalize the pion-loop corrections. A simple expression is derived for the magnetic dipole ($M1$) operator associated with pion loops, consisting of two terms, one of which is determined, uniquely, by the isospin-dependent part of the two-pion-exchange potential. This decomposition is also carried out for the $M1$ operator arising from contact currents, in which the unique term is determined by the contact potential. Finally, the low-energy constants (LEC's) entering the N$^2$LO potential are fixed by fits to the $np$ S- and P-wave phase shifts up to 100 MeV lab energies. Three additional LEC's are needed to completely specify the $M1$ operator at N$^3$L

  17. Measurement of sigma(chi(c2)B(chi(c2) ---> J / psi gamma) / sigma(chi(c1)B(chi(c1) ---> J / psi gamma) in p anti-p collisions at s**(1/2) = 1.96-TeV

    SciTech Connect (OSTI)

    Abulencia, A.; Adelman, J.; Affolder, T.; Akimoto, T.; Albrow, M.G.; Ambrose, D.; Amerio, S.; Amidei, D.; Anastassov, A.; Anikeev, K.; Annovi, A.; /Frascati /Comenius U.

    2007-03-01

    The authors measure the ratio of cross section times branching fraction, {sigma}{sub {chi}c2}{beta}({chi}{sub c2} {yields} J/{psi}{gamma})/{sigma}{sub {chi}c1}{beta}({chi}{sub c1} {yields} J/{psi}{gamma}), in 1.1 fb{sup -1} of p{bar p} collisions at {radical}s = 1.96 TeV. This measurement covers the kinematic range p{sub T} (J/{psi}) > 4.0 GeV/c, |{eta}(J/{psi})| < 1.0, and p{sub T}({gamma}) > 1.0 GeV/c. For events due to prompt processes, they find R{sub p} = 0.395 {+-} 0.016(stat.) {+-} 0.015(sys.). This result represents a significant improvement in precision over previous measurements of prompt {chi}{sub c1,2} hadroproduction.

  18. Proposed Training Plan to Improve Building Energy Efficiency in Vietnam

    SciTech Connect (OSTI)

    Yu, Sha; Evans, Meredydd

    2013-01-01

    Vietnam has experienced fast growth in energy consumption in the past decade, with annual growth rate of over 12 percent. This is accompanied by the fast increase in commercial energy use, driven by rapid industrialization, expansion of motorized transport, and increasing energy use in residential and commercial buildings. Meanwhile, Vietnam is experiencing rapid urbanization at a rate of 3.4 percent per year; and the majority of the growth centered in and near major cities such as Hanoi and Ho Chi Minh City. This has resulted in a construction boom in Vietnam.

  19. CERTIFIED MAIL RETURN RECEIPT REQUESTED Dr. Chi-Chang Kao Laboratory Director

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

    , 2014 CERTIFIED MAIL RETURN RECEIPT REQUESTED Dr. Chi-Chang Kao Laboratory Director SLAC National Accelerator Laboratory Stanford University 2575 Sand Hill Road Menlo Park, California 94025-7015 WEA-2014-05 Dear Dr. Kao: This letter refers to the Department of Energy's (DOE) investigation into the facts and circumstances associated with the implementation of worker safety and health program requirements related to laser and electron beam equipment at SLAC National Accelerator Laboratory (SLAC)

  20. Solenoid-free Plasma Start-up in NSTX using Transient CHI

    SciTech Connect (OSTI)

    Raman, R; Jarboe, T; Nelson, B; Mueller, D; Soukhanovskii, V A

    2009-01-05

    Experiments in NSTX have now demonstrated the coupling of toroidal plasmas produced by the technique of Coaxial Helicity Injection (CHI) to inductive sustainment and ramp-up of the toroidal plasma current. In these discharges, the central Ohmic transformer was used to apply an inductive loop voltage to discharges with a toroidal current of about 100 kA created by CHI. The coupled discharges have ramped up to >700 kA and transitioned into an H-mode demonstrating compatibility of this startup method with conventional operation. The electron temperature in the coupled discharges reached over 800 eV and the resulting plasma had low inductance, which is preferred for long-pulse high performance discharges. These results from NSTX in combination with the previously obtained record 160 kA non-inductively-generated startup currents in an ST or tokamak in NSTX demonstrate that CHI is a viable solenoid-free plasma startup method for future STs and tokamaks.

  1. Search for the Z_1(4050)^+ and Z_2(4250)^+ States in bar B^0 to chi_{c1} K^- pi^+ and B^+ to chi_{c1} K^0_S pi^+

    SciTech Connect (OSTI)

    Lees, J.P.; Poireau, V.; Tisserand, V.; /Annecy, LAPP; Garra Tico, J.; Grauges, E.; /Barcelona U., ECM; Martinelli, M.; /INFN, Bari /Bari U.; Milanes, D.A.; /INFN, Bari; Palano, A.; Pappagallo, M.; /INFN, Bari /Bari U.; Eigen, G.; Stugu, B.; /Bergen U.; Brown, D.N.; Kerth, L.T.; Kolomensky, Yu.G.; Lynch, G.; /UC, Berkeley; Koch, H.; Schroeder, T.; /Ruhr U., Bochum; Asgeirsson, D.J.; Hearty, C.; Mattison, T.S.; McKenna, J.A.; /British Columbia U. /Brunel U. /Novosibirsk, IYF /UC, Irvine /UC, Riverside /UC, Santa Barbara /UC, Santa Cruz /Caltech /Cincinnati U. /Colorado U. /Colorado State U. /Dortmund U. /Dresden, Tech. U. /Ecole Polytechnique /Edinburgh U. /INFN, Ferrara /Ferrara U. /INFN, Ferrara /Ferrara U. /INFN, Ferrara /Frascati /INFN, Genoa /Genoa U. /INFN, Genoa /INFN, Genoa /Genoa U. /INFN, Genoa /Indian Inst. Tech., Guwahati /Harvard U. /Harvey Mudd Coll. /Heidelberg U. /Humboldt U., Berlin /Imperial Coll., London /Iowa State U. /Iowa State U. /Johns Hopkins U. /Paris U., VI-VII /LLNL, Livermore /Liverpool U. /Queen Mary, U. of London /Royal Holloway, U. of London /Royal Holloway, U. of London /Louisville U. /Mainz U., Inst. Kernphys. /Manchester U. /Maryland U. /Massachusetts U., Amherst /MIT /McGill U. /INFN, Milan /Milan U. /Mississippi U. /Montreal U. /INFN, Naples /Naples U. /NIKHEF, Amsterdam /NIKHEF, Amsterdam /Notre Dame U. /Ohio State U. /Oregon U. /INFN, Padua /Padua U. /INFN, Padua /INFN, Padua /Padua U. /Paris U., VI-VII /INFN, Perugia /Perugia U. /INFN, Pisa /Pisa U. /INFN, Pisa /Pisa, Scuola Normale Superiore /INFN, Pisa /Pisa U. /INFN, Pisa /INFN, Pisa /Pisa U. /INFN, Pisa /Princeton U. /INFN, Rome /INFN, Rome /Rome U. /INFN, Rome /INFN, Rome /Rome U. /INFN, Rome /Rostock U. /Rutherford /DAPNIA, Saclay /SLAC /South Carolina U. /Southern Methodist U. /Stanford U., Phys. Dept. /SUNY, Albany /Tel Aviv U. /Tennessee U. /Texas Nuclear Corp., Austin /Texas U., Dallas /INFN, Turin /Turin U. /INFN, Trieste /Trieste U. /Valencia U. /Victoria U. /Warwick U. /Wisconsin U., Madison

    2012-04-10

    We search for the Z{sub 1}(4050){sup +} and Z{sub 2}(4250){sup +} states, reported by the Belle Collaboration, decaying to {chi}{sub c1}{pi}{sup +} in the decays {bar B}{sup 0} {yields} {chi}{sub c1}K{sup -}{pi}{sup +} and B{sup +} {yields} {chi}{sub c1}K{sub S}{sup 0}{pi}{sup +} where {chi}{sub c1} {yields} J/{psi}{gamma}. The data were collected with the BABAR detector at the SLAC PEP-II asymmetric-energy e{sup +}e{sup -} collider operating at center-of-mass energy 10.58 GeV, and correspond to an integrated luminosity of 429 fb{sup -1}. In this analysis, we model the background-subtracted, efficiency-corrected {chi}{sub c1}{pi}{sup +} mass distribution using the K{pi} mass distribution and the corresponding normalized K{pi} Legendre polynomial moments, and then test the need for the inclusion of resonant structures in the description of the {chi}{sub c1}{pi}{sup +} mass distribution. No evidence is found for the Z{sub 1}(4050){sup +} and Z{sub 2}(4250){sup +} resonances, and 90% confidence level upper limits on the branching fractions are reported for the corresponding B-meson decay modes.

  2. Precipitation of sigma and chi phases in ?-ferrite of Type 316FR weld metals

    SciTech Connect (OSTI)

    Chun, Eun Joon; Baba, Hayato; Nishimoto, Kazutoshi; Saida, Kazuyoshi

    2013-12-15

    The decomposition behavior and kinetics of ?-ferrite are examined using aging treatments between 873 and 1073 K for Type 316FR stainless steel weld metals with different solidification modes (316FR AF, 316FR FA). The dominant precipitates are sigma, chi, and secondary austenite nucleated at ?-ferrite/austenite interfaces or in the interior of the ferrite grains. These precipitates consume all the ferrite during isothermal aging in both 316FR AF and FA weld metals. Differences in the precipitation behavior (precipitation initiation time and precipitation speed) between weld metals can be explained by i) the degree of Cr and Mo microsegregation within ?-ferrite or austenite near ferrite and ii) the nucleation sites induced due to the solidification mode (AF or FA), such as the ferrite amount. For both weld materials, a JohnsonMehl-type equation can express the precipitation behavior of the sigma + chi phases and quantitatively predict the behavior at the service-exposure temperatures of a fast breed reactor. - Highlights: Precipitation of ? and ? phase in Type 316FR welds (two solidification modes) Different precipitation behaviors: precipitation initiation time and growth speed Johnson-Mehltype equation is the most applicable to the precipitation behaviors Precipitation behaviors are predicted under service conditions of FBRs.

  3. CONTRACT HO, AT(JO-l)-510

    Office of Legacy Management (LM)

    b I,: . 1 :{ - 7 ok-4 1% This document consists ofwpages. Eo.ZSIof2Scopies, Series 4. CONTRACT HO, AT(JO-l)-510 & F-J tlt-~3fjfTd1 / i /- /-&.;c-,' -.C.~ ATOMIC EKEBGY COMXISSIOB CONTRXTQR & ADDRESS: BRUSH BEBYLLIUM CCWANX/----y. 4301 Perkins Avenue Cleveland 3, Ohio SONTRACT EylR: BIESURCH, .DEVXLOPMEWl' AND PRODUCTIOH LOCATION: Cleveland, Ohio . $538250.00 AMOUET OF INITIAL COMJlISSIO19 OBLIGATIOB: Divisfon of Dlsburaement, U. S. Treasury Department, Bew York, E. Y. (Submit

  4. Transition form factors of P wave bottomonium {chi}{sub b0} (1P) into B{sub c} meson

    SciTech Connect (OSTI)

    Suengue, J. Y.; Azizi, K.; Sundu, H.

    2012-10-23

    Taking into account the two-gluon condensate contributions, the transition form factors enrolled to the low energy effective Hamiltonian describing the semileptonic {chi}{sub b0}{yields}B{sub c} Script-Small-L {nu},( Script-Small-L = (e,{mu},{tau})) decay channel are calculated within three-point QCD sum rules.

  5. Electromagnetic currents and magnetic moments in chiral effective field theory ({chi}EFT)

    SciTech Connect (OSTI)

    Pastore, S.; Girlanda, L.; Schiavilla, R.; Viviani, M.; Wiringa, R. B.

    2009-09-15

    A two-nucleon potential and consistent electromagnetic currents are derived in chiral effective field theory ({chi}EFT) at, respectively, Q{sup 2} (or N{sup 2}LO) and eQ (or N{sup 3}LO), where Q generically denotes the low-momentum scale and e is the electric charge. Dimensional regularization is used to renormalize the pion-loop corrections. A simple expression is derived for the magnetic dipole (M1) operator associated with pion loops, consisting of two terms, one of which is determined, uniquely, by the isospin-dependent part of the two-pion-exchange potential. This decomposition is also carried out for the M1 operator arising from contact currents, in which the unique term is determined by the contact potential. Finally, the low-energy constants entering the N{sup 2}LO potential are fixed by fits to the np S- and P-wave phase shifts up to 100 MeV laboratory energies.

  6. Theoretical rate coefficients for allyl + HO2 and allyloxy decomposition

    SciTech Connect (OSTI)

    Goldsmith, C. F.; Klippenstein, S. J.; Green, W. H.

    2011-01-01

    The kinetics of the allyl + HO{sub 2} bimolecular reaction, the thermal decomposition of C{sub 3}H{sub 5}OOH, and the unimolecular reactions of C{sub 3}H{sub 5}O are studied theoretically. High-level ab initio calculations of the C{sub 3}H{sub 5}OOH and C{sub 3}H{sub 5}O potential energy surfaces are coupled with RRKM master equation methods to compute the temperature- and pressure-dependence of the rate coefficients. Variable reaction coordinate transition state theory is used to characterize the barrierless transition states for the allyl + HO{sub 2} and C{sub 3}H{sub 5}O + OH reactions. The predicted rate coefficients for allyl + HO{sub 2} ? C{sub 3}H{sub 5}OOH ? products are in good agreement with experimental values. The calculations for allyl + HO{sub 2} ? C{sub 3}H{sub 6} + O{sub 2} underpredict the observed rate. The new rate coefficients suggest that the reaction of allyl + HO{sub 2} will promote chain-branching significantly more than previous models suggest.

  7. Isolation of 163Ho from dysprosium target material by HPLC for neutrino mass measurements

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

    Mocko, Veronika; Taylor, Wayne  A.; Nortier, Francois M.; Engle, Jonathan  W.; Barnhart, Todd  E.; Nickles, Robert  J.; Pollington, Anthony  D.; Kunde, Gerd  J.; Rabin, Michael  W.; Birnbaum, Eva  R.

    2015-04-29

    The rare earth isotope 163Ho is of interest for neutrino mass measurements. This report describes the isolation of 163Ho from a proton-irradiated dysprosium target and its purification. A Dy metal target was irradiated with 16 MeV protons for 10 h. After target dissolution, 163Ho was separated from the bulk Dy via cation-exchange high performance liquid chromatography using 70 mmol dm–3 α-hydroxyisobutyric acid as the mobile phase. Subsequent purification of the collected Ho fraction was performed to remove the α-hydroxyisobutyrate chelating agent and to concentrate the Ho in a low ionic strength aqueous matrix. The final solution was characterized by MC-ICP-MSmore » to determine the 163Ho/165Ho ratio, 163Ho and the residual Dy content. The HPLC purification process resulted in a decontamination factor 1.4E5 for Dy. As a result, the isolated Ho fraction contained 24.8 ±1.3 ng of 163Ho corresponding to holmium recovery of 72 ± 3%.« less

  8. In situ phase transformation of Laves phase from Chi-phase in Mo-containing Fe–Cr–Ni alloys

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

    Tan, L.; Yang, Y.

    2015-11-01

    For an in situ phase transformation of the Chi (χ) phase to the Laves phase we observed in a Fe–Cr–Ni–Mo model alloy. The morphology, composition, and crystal structure of the χ and Laves phases, and their orientation relationship with the matrix austenite phase were investigated. The resulted Laves phase has larger lattice mismatch with the matrix phase than the χ phase, leading to the increase of local strain fields and the formation of dislocations. Moreover, this finding is helpful to understand the precipitation behavior of the intermetallic phases in the Mo-containing austenitic stainless steels.

  9. Water exchange dynamics around H?O? and OH? ions

    SciTech Connect (OSTI)

    Roy, Santanu; Dang, Liem X.

    2015-05-01

    Proton transfer in water and other solvents is a complicated process and an active research area. Conformational changes of water hydrating a proton can have a significant influence on proton dynamics. A hydrated proton leads to H?O? that forms three hydrogen bonds with neighboring water molecules. In this letter, we report the first computer simulation of the dynamics of water exchanging between the first and second solvation shells of H?O?. Employing different rate theories for chemical reactions such as the transition state theory, the Grote-Hynes theory, the reactive flux method, and the Impey-Madden-McDonald method, we calculate the solvent exchange rates from molecular dynamics simulations that account for explicit polarization effects. In addition, we also study water exchanges around OH? and find that the corresponding time scale (~50 picoseconds [ps]) is much smaller than that for H?O? (~100 ps). Results from all the rate theories are computed and compared. This work was supported by the US Department of Energy, Office of Science, Office of Basic Energy Sciences, Division of Chemical Sciences, Geosciences, and Biosciences. The calculations were carried out using computer resources provided by the Office of Basic Energy Sciences.

  10. Theoretical study of reactions of HO{sub 2} in low-temperature oxidation of benzene

    SciTech Connect (OSTI)

    Altarawneh, Mohammednoor; Dlugogorski, Bogdan Z.; Kennedy, Eric M.; Mackie, John C.

    2010-07-15

    We have generated a set of thermodynamic and kinetic parameters for the reactions involving HO{sub 2} in the very early stages of benzene oxidation at low temperatures using density functional theory (DFT). In particular, we report the rate constants for the reactions of HO{sub 2} with benzene and phenyl. The calculated reaction rate constant for the abstraction of H-C{sub 6}H{sub 5} by HO{sub 2} is found to be in good agreement with the limited experimental values. HO{sub 2} addition to benzene is found to be more important than direct abstraction. We show that the reactions of HO{sub 2} with the phenyl radical generate the propagating radical OH in a highly exoergic reaction. The results presented herein should be useful in modeling the oxidation of aromatic compounds at low temperatures. (author)

  11. Itinerant and localized magnetization dynamics in antiferromagnetic Ho

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

    Rettig, L.; Dornes, C.; Thielemann-Kuhn, N.; Pontius, N.; Zabel, H.; Schlagel, D. L.; Lograsso, T. A.; Chollet, M.; Robert, A.; Sikorski, M.; et al

    2016-06-21

    Using femtosecond time-resolved resonant magnetic x-ray diffraction at the Ho L3 absorption edge, we investigate the demagnetization dynamics in antiferromagnetically ordered metallic Ho after femtosecond optical excitation. Here, tuning the x-ray energy to the electric dipole (E1, 2p → 5d) or quadrupole (E2, 2p → 4f) transition allows us to selectively and independently study the spin dynamics of the itinerant 5d and localized 4f electronic subsystems via the suppression of the magnetic (2 1 3–τ) satellite peak. We find demagnetization time scales very similar to ferromagnetic 4f systems, suggesting that the loss of magnetic order occurs via a similar spin-flipmore » process in both cases. The simultaneous demagnetization of both subsystems demonstrates strong intra-atomic 4f–5d exchange coupling. In addition, an ultrafast lattice contraction due to the release of magneto-striction leads to a transient shift of the magnetic satellite peak.« less

  12. Isolation of 163Ho from dysprosium target material by HPLC for neutrino mass measurements

    SciTech Connect (OSTI)

    Mocko, Veronika; Taylor, Wayne  A.; Nortier, Francois M.; Engle, Jonathan  W.; Barnhart, Todd  E.; Nickles, Robert  J.; Pollington, Anthony  D.; Kunde, Gerd  J.; Rabin, Michael  W.; Birnbaum, Eva  R.

    2015-04-29

    The rare earth isotope 163Ho is of interest for neutrino mass measurements. This report describes the isolation of 163Ho from a proton-irradiated dysprosium target and its purification. A Dy metal target was irradiated with 16 MeV protons for 10 h. After target dissolution, 163Ho was separated from the bulk Dy via cation-exchange high performance liquid chromatography using 70 mmol dm–3 α-hydroxyisobutyric acid as the mobile phase. Subsequent purification of the collected Ho fraction was performed to remove the α-hydroxyisobutyrate chelating agent and to concentrate the Ho in a low ionic strength aqueous matrix. The final solution was characterized by MC-ICP-MS to determine the 163Ho/165Ho ratio, 163Ho and the residual Dy content. The HPLC purification process resulted in a decontamination factor 1.4E5 for Dy. As a result, the isolated Ho fraction contained 24.8 ±1.3 ng of 163Ho corresponding to holmium recovery of 72 ± 3%.

  13. New Magnetic confirguration in paramagnetic phase of HoCo2 (Journal...

    Office of Scientific and Technical Information (OSTI)

    Journal Article: New Magnetic confirguration in paramagnetic phase of HoCo2 Citation ... OSTI Identifier: 1045775 Report Number(s): IS-J 7695 Journal ID: 0021-8979 DOE Contract ...

  14. The growth of Ho:YAG single crystals by Czochralski method and investigating the formed cores

    SciTech Connect (OSTI)

    Hasani Barbaran, J. Ghani Aragi, M. R.; Javaheri, I.; Baharvand, B.; Tabasi, M.; Layegh Ahan, R.; Jangjo, E.

    2015-12-15

    Ho:YAG single crystals were grown by Czochralski technique, and investigated by the X-ray diffraction (XRD) and optical methods. The crystals were cut and polished in order to observe and analyze their cores. It was found that the deviation of the cores formed in the Czochralski grown Ho:YAG single crystals are resulted from non-symmetrical status of thermal insulation around the Iridium crucible.

  15. Simultaneous, in situ measurements of OH and HO sub 2 in the stratosphere

    SciTech Connect (OSTI)

    Stimpfle, R.M.; Wennberg, P.O.; Lapson, L.B.; Anderson, J.G. )

    1990-10-01

    Stratospheric OH and HO{sub 2} radical densities have been measured between 36 and 23 using a balloon-born, in situ instrument launched from Palestine, TX on August 25, 1989. OH is detected using the laser-induced fluorescence technique (LIF) employing a Cu-vapor-laser pumped dye laser coupled with an enclosed-flow detection chamber. HO{sub 2} is detected nearly simultaneously by adding NO to the sample flow to convert ambient HO{sub 2} to OH. Observed OH and HO{sub 2} densities ranged from 8.0 {plus minus} 2.8 {times} 10{sup 6} and 1.4 {plus minus} 0.5 {times} 10{sup 7} molec cm{sup {minus}3}, respectively, at 36 km, to 1.4 {plus minus} 0.5 {times} 10{sup 6} and 3.0 {plus minus} 1.0 {times} 10{sup 6} at 23 km, where the uncertainty is {plus minus} 1{sigma}. The HO{sub 2} density exhibits a maximum in the 34-30 km region of 1.7 {plus minus} 0.6 {times} 10{sup 7}. The data were obtained over a solar zenith angle variation of 51{degree} at 36 km to 61{degree} at 23 km. O{sub 3} and H{sub 2}O densities also were measured simultaneously with separate instruments.

  16. Crystal structures and phase transitions in Ba{sub 2}HoTaO{sub 6}

    SciTech Connect (OSTI)

    Kennedy, Brendan J. Saines, Paul J.; Kubota, Yoshiki; Minakata, Chiharu; Hano, Hiroko; Kato, Kenichi; Takata, Masaki

    2007-11-06

    The structure of the cation-ordered double perovskite Ba{sub 2}HoTaO{sub 6} was examined using synchrotron X-ray powder diffraction at fine temperature intervals over the range of 90-300 K. Ba{sub 2}HoTaO{sub 6} has a cubic structure in space group Fm3-barm at room temperature. A proper ferroelastic phase transition to I4/m tetragonal symmetry occurs near approximately 260 K. Analysis of the spontaneous tetragonal strain versus temperature indicated that the phase transition is second order in nature.

  17. A Search for WIMP Dark Matter Using an Optimized Chi-square Technique on the Final Data from the Cryogenic Dark Matter Search Experiment (CDMS II)

    SciTech Connect (OSTI)

    Manungu Kiveni, Joseph

    2012-12-01

    This dissertation describes the results of a WIMP search using CDMS II data sets accumulated at the Soudan Underground Laboratory in Minnesota. Results from the original analysis of these data were published in 2009; two events were observed in the signal region with an expected leakage of 0.9 events. Further investigation revealed an issue with the ionization-pulse reconstruction algorithm leading to a software upgrade and a subsequent reanalysis of the data. As part of the reanalysis, I performed an advanced discrimination technique to better distinguish (potential) signal events from backgrounds using a 5-dimensional chi-square method. This dataanalysis technique combines the event information recorded for each WIMP-search event to derive a backgrounddiscrimination parameter capable of reducing the expected background to less than one event, while maintaining high efficiency for signal events. Furthermore, optimizing the cut positions of this 5-dimensional chi-square parameter for the 14 viable germanium detectors yields an improved expected sensitivity to WIMP interactions relative to previous CDMS results. This dissertation describes my improved (and optimized) discrimination technique and the results obtained from a blind application to the reanalyzed CDMS II WIMP-search data.

  18. Frustrated spin correlations in diluted spin ice Ho2-xLaxTi2O7

    SciTech Connect (OSTI)

    Ehlers, Georg; Ehlers, G.; Mamontov, E.; Zamponi, M.; Faraone, A.; Qiu, Y.; Cornelius, A.L.; Booth, C.H.; Kam, K.C.; Le Toquin, R.; Cheetham, A.K.; Gardner, J.S.

    2008-04-30

    We have studied the evolution of the structural properties as well as the static and dynamic spin correlations of spin ice Ho2Ti2O7, where Ho was partially replaced by non-magnetic La. The crystal structure of diluted samples Ho2-xLaxTi2O7 was characterized by x-ray and neutron diffraction and by Ho L-III-edge and Ti K-edge extended x-ray absorption fine structure (EXAFS) measurements. It is found that the pyrochlore structure remains intact until about x = 0.3, but a systematic increase in local disorder with increasing La concentration is observed in the EXAFS data, especially from the Ti K edge.Quasi-elastic neutron scattering and ac susceptibility measurements show that, in x<= 0.4 samples at temperatures above macroscopic freezing, the spin -spin correlations are short ranged and dynamic in nature. The main difference with pure spin ice in the dynamics is the appearance of a second, faster, relaxation process.

  19. Yu Ho (Ric) Wen > Postdoc - Archer Group > Researchers, Postdocs &

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

    Graduates > The Energy Materials Center at Cornell Yu Ho (Ric) Wen Postdoc - Archer Group yw563@cornell.edu Ric completed his PhD from National Chung Cheng University, Taiwan. His current research involves rheology and structure of tethered hybrid materials and their applications to lubricants

  20. Magnetic ordering in Ho{sub 2}Fe{sub 2}Si{sub 2}C

    SciTech Connect (OSTI)

    Susilo, R. A. Cadogan, J. M.; Cobas, R.; Hutchison, W. D.; Campbell, S. J.; Avdeev, M.

    2015-05-07

    We have used neutron diffraction and {sup 57}Fe Mössbauer spectroscopy, complemented by magnetisation and specific heat measurements, to examine the magnetic ordering of Ho{sub 2}Fe{sub 2}Si{sub 2}C. We have established that Ho{sub 2}Fe{sub 2}Si{sub 2}C orders antiferromagnetically below T{sub N} = 16(1) K with a magnetic structure involving ordering of the Ho sublattice along the b-axis with a propagation vector k=[0 0 1/2 ]. {sup 57}Fe Mössbauer spectra collected below T{sub N} show no evidence of a magnetic splitting, demonstrating the absence of long range magnetic ordering of the Fe sublattice. A small line broadening is observed in the {sup 57}Fe spectra below T{sub N}, which is due to a transferred hyperfine field—estimated to be around 0.3 T at 10 K—from the Ho sublattice.

  1. Analysis of emission spectra of Ho{sup 3+}:LFBCd glasses

    SciTech Connect (OSTI)

    Naresh, V. Buddhudu, S.

    2014-04-24

    In the present paper, we report on the absorption and emission properties of (0.1-1.5 mol %) Ho{sup 3+} doped LFBCd (Li{sub 2}O{sub ?}LiF{sub ?}B{sub 2}O{sub 3?}CdO) glasses prepared via melt quenching method. On exciting these glasses at (?{sub exci}) = 452 nm, two emissions at 556 nm ({sup 5}S{sub 2}?{sup 5}I{sub 8}; Green), 655 nm ({sup 5}F{sub 5}?{sup 5}I{sub 8}; Red) have been obtained. Upon exciting these glasses with a 980 nm diode laser, NIR emissions at 1195 nm ({sup 5}I{sub 6}?{sup 5}I{sub 8}), 1951 nm ({sup 5}I{sub 7}?{sup 5}I{sub 8}) have been measured for 1 mol % Ho{sup 3+}:LFBCd glass. For higher concentration beyond 1.0 mol %, emission quenching of Ho{sup 3+} glass has been noticed and which has successfully been explained in terms of an energy level diagram. From absorption cross-section data, stimulated emission cross-section has been evaluated by applying McCumber's theory and further cross-sectional gain has also been computed for the emissions at 1195 nm (?1.20 ?m) and 1951 nm (?2.0 ?m) of 1 mol % Ho{sup 3+}:LFBCd glass.

  2. Solid state phase equilibria and intermetallic compounds of the Al-Cr-Ho system

    SciTech Connect (OSTI)

    Pang, Mingjun; SAIC-GM-Wuling Automobile Co., Ltd., Liuzhou, Guangxi 545007 ; Zhan, Yongzhong; Du, Yong

    2013-02-15

    The solid state phase equilibria of the Al-Cr-Ho ternary system at 500 Degree-Sign C were experimentally investigated. The phase relations at 500 Degree-Sign C are governed by 14 three-phase regions, 29 two-phase regions and 15 single-phase regions. The existences of 10 binary compounds and 2 ternary phases have been confirmed. Al{sub 11}Cr{sub 2}, Al{sub 11}Cr{sub 4} and Al{sub 17}Ho{sub 2} were not found at 500 Degree-Sign C. Crystal structures of Al{sub 9}Cr{sub 4} and Al{sub 8}Cr{sub 4}Ho were determined by the Rietveld X-ray powder data refinement. Al{sub 9}Cr{sub 4} was found to exhibit cubic structure with space group I4-bar 3m (no. 217) and lattice parameters a=0.9107(5) nm. Al{sub 8}Cr{sub 4}Ho crystallizes in ThMn{sub 12} structure type with space group I4/mmm (no. 139) and lattice parameters a=0.8909(4) nm, c=0.5120(5) nm. It is concluded that the obtained Al{sub 4}Cr phase in this work should be {mu}-Al{sub 4}Cr by comparing with XRD pattern of the hexagonal {mu}-Al{sub 4}Mn compound. - Graphical abstract: The solid state phase equilibria of the Al-Cr-Ho ternary system at 500 Degree-Sign C. Highlights: Black-Right-Pointing-Pointer Al-Cr-Ho system has been investigated. Black-Right-Pointing-Pointer Al{sub 9}Cr{sub 4} has cubic structure with space group I4-bar 3m. Black-Right-Pointing-Pointer Al{sub 8}Cr{sub 4}Ho crystallizes in ThMn{sub 12} type with space group I4/mmm. Black-Right-Pointing-Pointer Al{sub 4}Cr phase is {mu}-type at 500 Degree-Sign C.

  3. The generalized second law of thermodynamics in Ho?ava-Lifshitz cosmology

    SciTech Connect (OSTI)

    Jamil, Mubasher; Saridakis, Emmanuel N.; Setare, M.R. E-mail: msaridak@phys.uoa.gr

    2010-11-01

    We investigate the validity of the generalized second law of thermodynamics in a universe governed by Ho?ava-Lifshitz gravity. Under the equilibrium assumption, that is in the late-time cosmological regime, we calculate separately the entropy time-variation for the matter fluid and, using the modified entropy relation, that of the apparent horizon itself. We find that under detailed balance the generalized second law is generally valid for flat and closed geometry and it is conditionally valid for an open universe, while beyond detailed balance it is only conditionally valid for all curvatures. Furthermore, we also follow the effective approach showing that it can lead to misleading results. The non-complete validity of the generalized second law could either provide a suggestion for its different application, or act as an additional problematic feature of Ho?ava-Lifshitz gravity.

  4. Holographic dark energy with varying gravitational constant in Ho?ava-Lifshitz cosmology

    SciTech Connect (OSTI)

    Setare, M.R.; Jamil, Mubasher E-mail: mjamil@camp.nust.edu.pk

    2010-02-01

    We investigate the holographic dark energy scenario with a varying gravitational constant in a flat background in the context of Ho?ava-Lifshitz gravity. We extract the exact differential equation determining the evolution of the dark energy density parameter, which includes G variation term. Also we discuss a cosmological implication of our work by evaluating the dark energy equation of state for low redshifts containing varying G corrections.

  5. Visualiser of two-micron laser radiation based on Ho:CaF{sub 2} crystals

    SciTech Connect (OSTI)

    Lyapin, A A; Ryabochkina, P A; Ushakov, S N; Fedorov, P P

    2014-06-30

    The anti-Stokes luminescence spectra of Ho:CaF{sub 2} crystals corresponding to the {sup 5}G{sub 4} ? {sup 5}I{sub 8}, {sup 5}G{sub 5} ? {sup 5}I{sub 8}, {sup 5}F{sub 3} ? {sup 5}I{sub 8}, {sup 5}F{sub 4}({sup 5}S{sub 2}) ? {sup 5}I{sub 8}, {sup 5}F{sub 5} ? {sup 5}I{sub 8}, {sup 5}S{sub 2} ? {sup 5}I{sub 7}, {sup 5}I{sub 4} ? {sup 5}I{sub 8}, {sup 5}I{sub 5} ? {sup 5}I{sub 8}, {sup 5}F{sub 5} ? {sup 5}I{sub 7}, {sup 5}F{sub 3} ? {sup 5}I{sub 6}, {sup 5}I{sub 6} ? {sup 5}I{sub 8}, {sup 5}F{sub 5} ? {sup 5}I{sub 6}, and {sup 5}I{sub 5} ? {sup 5}I{sub 7} transitions upon excitation of the {sup 5}I{sub 7} level of Ho{sup 3+} ions are studied. A method for visualisation of IR radiation in the two-micron range using Ho:CaF{sub 2} crystals is proposed. The energy efficiency of conversion of two-micron laser radiation to radiation in the red spectral range 620 690 nm by a 1 mol % HoF{sub 3}:CaF{sub 2} crystal is estimated to be no higher than 0.02%. (nonlinear optical phenomena)

  6. White light emitting Ho{sup 3+}-doped CdS nanocrystal ingrained glass nanocomposites

    SciTech Connect (OSTI)

    Dey, Chirantan; Karmakar, Basudeb; Goswami, Madhumita

    2015-02-23

    We report the generation of white light from Ho{sup 3+} ion doped CdS nanocrystal ingrained borosilicate glass nanocomposites prepared by the conventional melt-quench method. Near visible 405?nm diode laser excited white light emission is produced by tuning the blue emission from the Ho{sup 3+} ions, green band edge, and orange-red surface-state emissions of the nanocrystalline CdS, which are further controlled by the size of the nanocrystals. The absorption and emission spectra evidenced the excitation of Ho{sup 3+} ions by absorption of photons emitted by the CdS nanocrystals. The high color rendering index (CRI?=?8489) and befitting chromaticity coordinates (x?=?0.3080.309, y?=?0.3260.338) of white light emission, near visible harmless excitation wavelength (405?nm), and high absorbance values at excitation wavelength point out that these glass nanocomposites may serve as a prominent candidate for resin free high power white light emitting diodes.

  7. Cosmological QCD phase transition in steady non-equilibrium dissipative Ho?avaLifshitz early universe

    SciTech Connect (OSTI)

    Khodadi, M. Sepangi, H.R.

    2014-07-15

    We study the phase transition from quarkgluon plasma to hadrons in the early universe in the context of non-equilibrium thermodynamics. According to the standard model of cosmology, a phase transition associated with chiral symmetry breaking after the electro-weak transition has occurred when the universe was about 110?s old. We focus attention on such a phase transition in the presence of a viscous relativistic cosmological background fluid in the framework of non-detailed balance Ho?avaLifshitz cosmology within an effective model of QCD. We consider a flat FriedmannRobertsonWalker universe filled with a non-causal and a causal bulk viscous cosmological fluid respectively and investigate the effects of the running coupling constants of Ho?avaLifshitz gravity, ?, on the evolution of the physical quantities relevant to a description of the early universe, namely, the temperature T, scale factor a, deceleration parameter q and dimensionless ratio of the bulk viscosity coefficient to entropy density (?)/s . We assume that the bulk viscosity cosmological background fluid obeys the evolution equation of the steady truncated (Eckart) and full version of the IsraelStewart fluid, respectively. -- Highlights: In this paper we have studied quarkhadron phase transition in the early universe in the context of the Ho?avaLifshitz model. We use a flat FRW universe with the bulk viscosity cosmological background fluid obeying the evolution equation of the steady truncated (Eckart) and full version of the IsraelStewart fluid, respectively.

  8. A chi-square goodness-of-fit test for non-identically distributed random variables: with application to empirical Bayes

    SciTech Connect (OSTI)

    Conover, W.J.; Cox, D.D.; Martz, H.F.

    1997-12-01

    When using parametric empirical Bayes estimation methods for estimating the binomial or Poisson parameter, the validity of the assumed beta or gamma conjugate prior distribution is an important diagnostic consideration. Chi-square goodness-of-fit tests of the beta or gamma prior hypothesis are developed for use when the binomial sample sizes or Poisson exposure times vary. Nine examples illustrate the application of the methods, using real data from such diverse applications as the loss of feedwater flow rates in nuclear power plants, the probability of failure to run on demand and the failure rates of the high pressure coolant injection systems at US commercial boiling water reactors, the probability of failure to run on demand of emergency diesel generators in US commercial nuclear power plants, the rate of failure of aircraft air conditioners, baseball batting averages, the probability of testing positive for toxoplasmosis, and the probability of tumors in rats. The tests are easily applied in practice by means of corresponding Mathematica{reg_sign} computer programs which are provided.

  9. Sample dependence of giant magnetocaloric effect in a cluster-glass system Ho{sub 5}Pd{sub 2}

    SciTech Connect (OSTI)

    Toyoizumi, Saori Tamaki, Akira; Kitazawa, Hideaki; Mamiya, Hiroaki; Terada, Noriki; Tamura, Ryo; Dönni, Andreas; Kawamura, Yukihiko; Morita, Kengo

    2015-05-07

    In order to investigate the effect of vacancy on the magnetocaloric effect in Ho{sub 5}Pd{sub 2}, we have carried out X-ray diffraction, magnetization, and specific heat measurements in the rare-earth intermetallic compound Ho{sub 5+x}Pd{sub 2}(−0.4 ≤ x ≤ 0.4). The maximum magnetic entropy change −ΔS{sub m}{sup max}, the maximum adiabatic temperature change ΔT{sub ad}{sup max}, and the relative cooling power of Ho{sub 5+x}Pd{sub 2} take large values at x = 0−0.4 for the field change of 5 T. The paramagnetic Curie temperature θ{sub p} increases with an increase of x. This fact suggests that the enhancement of ferromagnetic coupling among the correlated spins leads to the increase of magnetocaloric effect.

  10. Negative-parity states and {beta} decays in odd Ho and Dy nuclei with A=151,153

    SciTech Connect (OSTI)

    Al-Khudair, Falih H.; Long Guilu; Sun Yang

    2008-03-15

    We investigated the negative-parity states and electromagnetic transitions in {sup 151,153}Ho and {sup 151,153}Dy within the framework of the interacting boson fermion model 2 (IBFM-2). Spin assignments for some states with uncertain spin are made based on this calculation. Calculated excitation energies, electromagnetic transitions, and branching ratios are compared with available experimental data and a good agreement is obtained. The model wave functions were used to study {beta} decays from Ho to Dy isotones, and the calculated logft values are close to the experimental data.

  11. AmeriFlux US-Ho2 Howland Forest (west tower)

    SciTech Connect (OSTI)

    Hollinger, David; Hollinger, David

    2016-01-01

    This is the AmeriFlux version of the carbon flux data for the site US-Ho2 Howland Forest (west tower). Site Description - Closed conifer forest, minimal disturbance. References: Fernandez et al. (1993), Canadian Journal of Soil Science 73 317-328. Hollinger et al. (1999), Global Change Biology 5: 891-902. Savage KE, Davidson EA (2001), Global Biogeochemical Cycles 15 337-350. Scott et al. (2004), Environmental Management, Vol. 33, Supplement 1, pp. S9-S22. Hollinger et al. (2004), Global Change Biology 10: 1689-1706.

  12. AmeriFlux US-Ho3 Howland Forest (harvest site)

    SciTech Connect (OSTI)

    Hollinger, David; Hollinger, David

    2016-01-01

    This is the AmeriFlux version of the carbon flux data for the site US-Ho3 Howland Forest (harvest site). Site Description - Closed conifer forest, minimal disturbance. References: Fernandez et al. (1993), Canadian Journal of Soil Science 73 317-328. Hollinger et al. (1999), Global Change Biology 5: 891-902. Savage KE, Davidson EA (2001), Global Biogeochemical Cycles 15 337-350. Scott et al. (2004), Environmental Management, Vol. 33, Supplement 1, pp. S9-S22. Hollinger et al. (2004), Global Change Biology 10: 1689-1706.

  13. AmeriFlux US-Ho1 Howland Forest (main tower)

    SciTech Connect (OSTI)

    Hollinger, David; Hollinger, David

    2016-01-01

    This is the AmeriFlux version of the carbon flux data for the site US-Ho1 Howland Forest (main tower). Site Description - Closed conifer forest, minimal disturbance. References: Fernandez et al. (1993), Canadian Journal of Soil Science 73 317-328. Hollinger et al. (1999), Global Change Biology 5: 891-902. Savage KE, Davidson EA (2001), Global Biogeochemical Cycles 15 337-350. Scott et al. (2004), Environmental Management, Vol. 33, Supplement 1, pp. S9-S22. Hollinger et al. (2004), Global Change Biology 10: 1689-1706.

  14. Observation of large magnetocaloric effect in HoRu{sub 2}Si{sub 2}

    SciTech Connect (OSTI)

    Paramanik, Tapas Das, Kalipada; Das, I.

    2014-02-28

    Detailed magnetic, magnetotransport, and magnetocaloric measurements on HoRu{sub 2}Si{sub 2} have been performed. In this Letter, we report presence of spin reorientation transition below paramagnetic to antiferromagnetic transition temperature (T{sub N} = 19 K). Large magnetic entropy change 9.1 J/kg K and large negative magnetoresistance ∼21% in a magnetic field of 5 T has been observed around T{sub N}, which is associated with field induced spin-flip metamagnetic transition.

  15. Mechanical behaviors and phase transition of Ho{sub 2}O{sub 3} nanocrystals under high pressure

    SciTech Connect (OSTI)

    Yan, Xiaozhi; Ren, Xiangting; He, Duanwei E-mail: yangwg@hpstar.ac.cn; Chen, Bin; Yang, Wenge E-mail: yangwg@hpstar.ac.cn

    2014-07-21

    Mechanical properties and phase transition often show quite large crystal size dependent behavior, especially at nanoscale under high pressure. Here, we have investigated Ho{sub 2}O{sub 3} nanocrystals with in-situ x-ray diffraction and Raman spectroscopy under high pressure up to 33.5 GPa. When compared to the structural transition routine cubic -> monoclinic -> hexagonal phase in bulk Ho{sub 2}O{sub 3} under high pressure, the nano-sized Ho{sub 2}O{sub 3} shows a much higher onset transition pressure from cubic to monoclinic structure and followed by a pressure-induced-amorphization under compression. The detailed analysis on the Q (Q = 2π/d) dependent bulk moduli reveals the nanosized Ho{sub 2}O{sub 3} particles consist of a clear higher compressible shell and a less compressible core. Insight into these phenomena shed lights on micro-mechanism studies of the mechanical behavior and phase evolution for nanomaterials under high pressure, in general.

  16. Magnetism of Ho1-xTbxAl₂ alloys: Critical dependence of a first-order transition on Tb concentration

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

    Khan, Mahmud; Mudryk, Ya.; Gschneidner, K. A.; Pecharsky, V. K.

    2011-12-27

    HoAl₂ exhibits a first-order spin reorientation transition at 20 K, which is manifested as a sharp peak in the heat capacity. When Ho is partially replaced by only 5% of Tb, the sharp heat-capacity peak in Ho1-xTbxAl₂ (x = 0.05) disappears, and then reappears again for x ≥ 0.07. For x = 0.05, the anomaly corresponding to the spin reorientation transition is barely seen in the heat capacity, but as x exceeds 0.07 the weak anomaly transforms to a sharp peak. The spin reorientation transition temperature increases to 29 K for x = 0.05, and as x increases further themore » transition shifts to lower temperature and returns to ~20 K for x = 0.25. The transition is no longer observed when x exceeds 0.60. Temperature-dependent x-ray powder-diffraction data confirm the first-order nature of the spin reorientation transition for the alloy with x = 0.40, and indicate that the compound retains the room-temperature cubic structure within the sensitivity of the technique. Experimental observations are discussed considering the easy magnetization directions of HoAl₂ and TbAl₂.« less

  17. Thermoelectric and Structural Characterization of Ba2Ho(Cu3-xCox)O6+y

    SciTech Connect (OSTI)

    Wong-Ng, W.; Li, Q.; Yang, Z.; Hu, Y.F.; Huang, Q.; Lowhorn, N.; Otani, M.; Kaduk, J.A.

    2009-03-18

    The search for thermoelectric materials for power generation and for solid-state cooling has led to increased interest of layered cobalt-containing oxides because of their thermal stability at high temperature and their desirable thermoelectric properties. This paper examines the effect of substitution of Co in the layered pervoskite Ba{sub 2}Ho(Cu{sub 3-x}Co{sub x})O{sub 6+y} (x = 0.3, 0.4, 0.5, 0.6, and 1.0). Structural analysis using the neutron Rietveld refinement technique reveals that when x {le} 0.4, Co substitutes mainly for Cu in the 'chain sites' of the Ba{sub 2}Ho(Cu{sub 3-x}Co{sub x})O{sub 6+y} structure. As x > 0.4, Co also enters in the Cu-O 'plane sites' as well. The thermoelectric properties of polycrystalline Ba{sub 2}Ho(Cu{sub 3-x}Co{sub x})O{sub 6+y} samples were studied in the temperature range of 10-390 K. In general, as the cobalt content x increases, the resistivity and Seebeck coefficient of these samples increase while the thermal conductivity decreases. Among the five Ba{sub 2}Ho(Cu{sub 3-x}Co{sub x})O{sub 6+y} compositions, the x = 0.4 member gives the highest figure of merit ZT of {approx} 0.02 at approximately 270 K.

  18. Ultraviolet and white photon avalanche upconversion in Ho{sup 3+}-doped nanophase glass ceramics

    SciTech Connect (OSTI)

    Lahoz, F.; Martin, I.R.; Calvilla-Quintero, J.M.

    2005-01-31

    Ho{sup 3+}-doped fluoride nanophase glass ceramics have been synthesized from silica-based oxyfluoride glass. An intense white emission light is observed by the naked eye under near infrared excitation at 750 nm. This visible upconversion is due to three strong emission bands in the primary color components, red, green, and blue. Besides, ultraviolet signals are also recorded upon the same excitation wavelength. The excitation mechanism of both the ultraviolet and the visible emissions is a photon avalanche process with a relatively low pump power threshold at about 20 mW. The total upconverted emission intensity has been estimated to increase by about a factor of 20 in the glass ceramic compared to the precursor glass, in which an avalanche type mechanism is not generated.

  19. Clifford Ho

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

    Clearance Adjudication The Office of Personnel and Facility Clearances and Classification (OPFCC) submits the clearance paperwork to the proper investigative agency, the Office of Personnel Management (OPM) or the Federal Bureau of Investigation (FBI). Upon receipt of the investigation, the paperwork is matched to the Personnel Security File and assigned to a Personnel Security Specialist, who will adjudicate the investigation, using the Presidential Adjudicative Guidelines. If security concerns

  20. Disorder from order among anisotropic next-nearest-neighbor Ising spin chains in SrHo2O4

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

    Wen, J. -J.; Tian, W.; Garlea, V. O.; Koohpayeh, S. M.; McQueen, T. M.; Li, H. -F.; Yan, J. -Q.; Rodriguez-Rivera, J. A.; Vaknin, D.; Broholm, C. L.

    2015-02-26

    In this study, we describe why Ising spin chains with competing interactions in SrHo2O4 segregate into ordered and disordered ensembles at low temperatures (T). Using elastic neutron scattering, magnetization, and specific heat measurements, the two distinct spin chains are inferred to have Néel (↑↓↑↓) and double-Néel (↑↑↓↓) ground states, respectively. Below TN = 0.68(2)K, the Néel chains develop three-dimensional long range order (LRO), which arrests further thermal equilibration of the double-Néel chains so they remain in a disordered incommensurate state for T below TS = 0.52(2)K. SrHo2O4 distills an important feature of incommensurate low dimensional magnetism: kinetically trapped topological defectsmore » in a quasi–d–dimensional spin system can preclude order in d + 1 dimensions.« less

  1. Spin structure and magnetic frustration in multiferroic RMn{sub 2}O{sub 5} (R=Tb,Ho,Dy)

    SciTech Connect (OSTI)

    Blake, G.R.; Chapon, L.C.; Radaelli, P.G.; Park, S.; Hur, N.; Cheong, S-W.; Rodriguez-Carvajal, J.

    2005-06-01

    We have studied the crystal and magnetic structures of the magnetoelectric materials RMn{sub 2}O{sub 5} (R=Tb,Ho,Dy) using neutron diffraction as a function of temperature. All three materials display incommensurate antiferromagnetic ordering below 40 K, becoming commensurate on further cooling. For R=Tb,Ho, a commensurate-incommensurate transition takes place at low temperatures. The commensurate magnetic structures have been solved and are discussed in terms of competing exchange interactions. The spin configuration within the ab plane is essentially the same for each system, and the radius of R determines the sign of the magnetic exchange between adjacent planes. The inherent magnetic frustration in these materials is lifted by a small lattice distortion, primarily involving shifts of the Mn{sup 3+} cations and giving rise to a canted antiferroelectric phase.

  2. Balancing structural distortions via competing 4f and itinerant interactions: A case of polymorphism in magnetocaloric HoCo2

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

    Mudryk, Y.; Paudyal, D.; Pathak, A. K.; Pecharsky, V. K.; Gschneidner, Jr., K. A.

    2016-04-13

    The nature of multiple magnetostructural transformations in HoCo2 has been studied by employing magnetic and specific heat measurements, temperature and magnetic field dependent X-ray powder diffraction, and first-principles calculations. Unexpected increase of magnetization observed below the spin-reorientation temperature (TSR) suggests that the low-temperature transition involves a reduction of Co moment. First principles calculations confirm that the paramagnetic cubic to ferrimagnetic tetragonal transformation at TC is assisted by itinerant electron metamagnetism, and that the reduction of Co moment in HoCo2 occurs in parallel with the ferrimagnetic tetragonal to the nearly ferromagnetic orthorhombic transformation at TSRvia the rearrangement of both 3d statesmore » of Co and 5d states of Ho. The ac magnetic susceptibility measurements show significant magnetic frustration below TC. Furthermore, in contrast to earlier reports neither ac nor dc magnetic susceptibilities show anomalies in the paramagnetic region obeying the Curie–Weiss law.« less

  3. TITLE AUTHORS SUBJECT SUBJECT RELATED DESCRIPTION PUBLISHER AVAILABILI...

    Office of Scientific and Technical Information (OSTI)

    Reduction of low potential electron acceptors requires the CbcL inner membrane cytochrome of Geobacter sulfurreducens Zacharoff Lori Chan Chi Ho ORCID Bond Daniel R Elsevier None...

  4. Reduction of low potential electron acceptors requires the CbcL...

    Office of Scientific and Technical Information (OSTI)

    Reduction of low potential electron acceptors requires the CbcL inner membrane cytochrome of Geobacter sulfurreducens Zacharoff, Lori; Chan, Chi Ho (ORCID:0000000265963436); Bond,...

  5. Ferromagnetic and paramagnetic magnetization of implanted GaN:Ho,Tb,Sm,Tm films

    SciTech Connect (OSTI)

    Maryško, M. Hejtmánek, J.; Laguta, V.; Sofer, Z.; Sedmidubský, D.; Šimek, P.; Veselý, M.; Mikulics, M.; Buchal, C.; Macková, A.; Malínský, P.; Wilhelm, R. A.

    2015-05-07

    The SQUID magnetic measurements were performed on the GaN films prepared by metal-organic vapour phase epitaxy and implanted by Tb{sup 3+}, Tm{sup 3+}, Sm{sup 3+}, and Ho{sup 3+} ions. The sapphire substrate was checked by the electron paramagnetic resonance method which showed a content of Cr{sup 3+} and Fe{sup 3+} impurities. The samples 5 × 5 mm{sup 2} were positioned in the classical straws and within an estimated accuracy of 10{sup −6 }emu, no ferromagnetic moment was detected in the temperature region of 2–300 K. The paramagnetic magnetization was studied for parallel and perpendicular orientation. In the case of GaN:Tb sample, at T = 2 K, a pronounced anisotropy with the easy axis perpendicular to the film was observed which can be explained by the lowest quasi-doublet state of the non-Kramers Tb{sup 3+} ion. The Weiss temperature deduced from the susceptibility data using the Curie-Weiss (C-W) law was found to depend substantially on the magnetic field.

  6. Electronic structure and 3d-4f exchange interactions in zircon-type RCrO{sub 4} oxides (R=Dy, Ho and Gd)

    SciTech Connect (OSTI)

    Ray, Avijeet Maitra, Tulika

    2015-06-24

    Using first principles density functional theory (DFT) calculations within GGA and GGA+U approximations we studied both ferromagnetic (FM) and antiferromagnetic (AFM) phases of zircon type RCrO{sub 4} (R= Dy, Ho, Gd) oxides. We estimated and compared the 3d-4f exchange interaction strengths J between the nearest neighbor R{sup 3+} and Cr{sup 5+} ions for R=Dy, Gd. Our results predict that DyCrO{sub 4}, GdCrO{sub 4} and HoCrO{sub 4} have ferromagnetic ground state which is consistent with experimental observations.

  7. Time-Resolved Quantitative Measurement of OH HO2 and CH2O in Fuel Oxidation Reactions by High Resolution IR Absorption Spectroscopy.

    SciTech Connect (OSTI)

    Huang, Haifeng; Rotavera, Brandon; Taatjes, Craig A.

    2014-08-01

    Combined with a Herriott-type multi-pass slow flow reactor, high-resolution differential direct absorption spectroscopy has been used to probe, in situ and quantitatively, hydroxyl (OH), hydroperoxy (HO 2 ) and formaldehyde (CH 2 O) molecules in fuel oxidation reactions in the reactor, with a time resolution of about 1 micro-second. While OH and CH 2 O are probed in the mid-infrared (MIR) region near 2870nm and 3574nm respectively, HO 2 can be probed in both regions: near-infrared (NIR) at 1509nm and MIR at 2870nm. Typical sensitivities are on the order of 10 10 - 10 11 molecule cm -3 for OH at 2870nm, 10 11 molecule cm -3 for HO 2 at 1509nm, and 10 11 molecule cm -3 for CH 2 O at 3574nm. Measurements of multiple important intermediates (OH and HO 2 ) and product (CH 2 O) facilitate to understand and further validate chemical mechanisms of fuel oxidation chemistry.

  8. Fragile singlet ground-state magnetism in the pyrochlore osmates R2Os2O7 ( R=Y and Ho)

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

    Zhao, Z. Y.; Calder, S.; Aczel, A. A.; McGuire, M. A.; Sales, B. C.; Mandrus, D. G.; Chen, G.; Trivedi, N.; Zhou, H. D.; Yan, J. -Q.

    2016-04-25

    The singlet ground state magnetism in pyrochlore osmates Y2Os2O7 and Ho2Os2O7 is studied by DC and AC susceptibility, specific heat, and neutron powder di raction measurements. Despite the expected non-magnetic singlet in the strong spin-orbit coupling (SOC) limit for Os4+ (5d4), Y2Os2O7 exhibits a spin-glass (SG) ground state below 4 K with weak magnetism, suggesting possible proximity to a quantum phase transition between the non-magnetic state in the strong SOC limit and the magnetic state in the strong superexchange limit. Ho2Os2O7 has the same structural distortion as occurs in Y2Os2O7. However, the Os sublattice in Ho2Os2O7 shows long- range magneticmore » ordering below 36 K. We find that the sharp difference of the magnetic ground state between Y2Os2O7 and Ho2Os2O7 signals the singlet ground state magnetism in R2 Os2 O7 is fragile and can be disturbed by the weak 4f—5d interactions.« less

  9. Building on and spinning off: Sandia National Labs` creation of sensors for Vietnam

    SciTech Connect (OSTI)

    Ullrich, R.

    1996-12-31

    This paper discusses Sandia National Laboratories` development of new technologies for use in the Vietnam War - specifically the seismic sensors deployed to detect troop and vehicle movement - first along the Ho Chi Minh Trail and later in perimeter defense for American military encampments in South Vietnam. Although the sensor story is a small one, it is interesting because it dovetails nicely with our understanding of the war in Vietnam and its frustrations; of the creation of new technologies for war and American enthusiasm for that technology; and of a technological military and the organizational research and a m am development structure created to support it. Within the defense establishment, the sensors were proposed within the context of a larger concept - that of a barrier to prevent the infiltration of troops and supplies from North Vietnam to the South. All of the discussion of the best way to fight in Vietnam is couched in the perception that this was a different kind of war than America was used to fighting. The emphasis was on countering the problems posed by guerrilla/revolutionary warfare and eventually by the apparent constraints of being involved in a military action, not an outright war. The American response was to find the right technology to do the job - to control the war by applying a technological tincture to its wounds and to make the war familiar and fightable on American terms. And, when doubts were raised about the effectiveness of applying existing technologies (namely, the bombing of North Vietnam and Laos), the doubters turned to new technologies. The sensors that were developed for use in Vietnam were a direct product of this sort of thinking - on the part of the engineers at Sandia who created the sensors, the civilian scientific advisors who recommended them, and, ultimately, the soldiers in the field who had to use them.

  10. Disorder from order among anisotropic next-nearest-neighbor Ising spin chains in SrHo2O4

    SciTech Connect (OSTI)

    Wen, J. -J.; Tian, W.; Garlea, V. O.; Koohpayeh, S. M.; McQueen, T. M.; Li, H. -F.; Yan, J. -Q.; Rodriguez-Rivera, J. A.; Vaknin, D.; Broholm, C. L.

    2015-02-26

    In this study, we describe why Ising spin chains with competing interactions in SrHo2O4 segregate into ordered and disordered ensembles at low temperatures (T). Using elastic neutron scattering, magnetization, and specific heat measurements, the two distinct spin chains are inferred to have Nel (????) and double-Nel (????) ground states, respectively. Below TN = 0.68(2)K, the Nel chains develop three-dimensional long range order (LRO), which arrests further thermal equilibration of the double-Nel chains so they remain in a disordered incommensurate state for T below TS = 0.52(2)K. SrHo2O4 distills an important feature of incommensurate low dimensional magnetism: kinetically trapped topological defects in a quasiddimensional spin system can preclude order in d + 1 dimensions.

  11. 3d-4f spin interaction and field-induced metamagnetism in RCrO{sub 4} (R?=?Ho, Gd, Lu) compounds

    SciTech Connect (OSTI)

    Midya, A.; Khan, N.; Bhoi, D.; Mandal, P.

    2014-05-07

    We observe that the zircon-type RCrO{sub 4} (R?=?Ho, Gd, Lu) compounds exhibit complicated magnetic properties and large magnetic entropy change due to the strong competition between ferromagnetic and antiferromagnetic interactions. For a field change of 7?T, the maximum values of entropy change and refrigerant capacity reach 28?J?kg{sup ?1}?K{sup ?1} and 740?J?kg{sup ?1}, respectively, for GdCrO{sub 4} whereas the corresponding values for HoCrO{sub 4} are 29?J?kg{sup ?1}?K{sup ?1} and 550?J?kg{sup ?1}. For GdCrO{sub 4} compound, the magnetic entropy change is quite large even at low temperatures well below the ferromagnetic transition.

  12. The fluorite-pyrochlore transformation of Ho{sub 2-y}Nd{sub y}Zr{sub 2}O{sub 7}

    SciTech Connect (OSTI)

    Clements, Richard; Hester, James R.; Kennedy, Brendan J.; Ling, Chris D.; Stampfl, Anton P.J.

    2011-08-15

    Twelve members of the Ho{sub 2-y}Nd{sub y}Zr{sub 2}O{sub 7} series, prepared using conventional solid state methods, have been characterised by neutron powder diffraction. Ho{sub 2}Zr{sub 2}O{sub 7} has a defect fluorite structure whereas Nd{sub 2}Zr{sub 2}O{sub 7} is found to adopt the ordered pyrochlore structure with the composition induced fluorite-pyrochlore transformation occurring near y=1. Rietveld analysis on the neutron data for all the compositions reveals an increase in lattice parameter as a function of y across the entire series, with a small discontinuity associated with the transformation. The neutron profile results suggest that domains of pyrochlore-type initially begin to form before crystallising into a separate phase, and therefore that anion and cation ordering processes are distinct. There is a strong correlation between the extent of disorder in the anion sublattice and the x-parameter of 48f oxygen. These results point the way to a better understanding of the stability observed in pyrochlore structures. - Graphical abstract: Neutron diffraction profiles for Nd{sub 2-y}Ho{sub y}Zr{sub 2}O{sub 7} type oxides reveal details of the transformation from the ordered pyrochlore structure (y=0) to the disordered fluorite structure (y=2). Highlights: > Structures of twelve members of the Ho{sub 2-y}Nd{sub y}Zr{sub 2}O{sub 7} series studied using neutron powder diffraction. > Domains of pyrochlore-type materials form at low doping levels. > Higher doping stabilises the pyrochlore. > Anion and cation ordering processes are distinct.

  13. Low temperature (550-700 K) oxidation pathways of cyclic ketones: Dominance of HO2-elimination channels yielding conjugated cyclic coproducts

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

    Scheer, Adam M.; Welz, Oliver; Vasu, Subith S.; Osborn, David L.; Taatjes, Craig A.

    2015-04-13

    The low-temperature oxidation of three cyclic ketones, cyclopentanone (CPO; C5H8O), cyclohexanone (CHO; C6H10 O), and 2-methyl-cyclopentanone (2-Me-CPO; CH3–C5H7 O), is studied between 550 and 700 K and at 4 or 8 Torr total pressure. Initial fuel radicals R are formedvia fast H-abstraction from the ketones by laser-photolytically generated chlorine atoms. Intermediates and products from the subsequent reactions of these radicals in the presence of excess O2 are probed with time and isomeric resolution using multiplexed photoionization mass spectrometry with tunable synchrotron ionizing radiation. For CPO and CHO the dominant product channel in the R + O2 reactions is chain-terminating HO2-eliminationmore » yielding the conjugated cyclic coproducts 2-cyclopentenone and 2-cyclohexenone, respectively. Results on oxidation of 2-Me-CPO also show a dominant contribution from HO2-elimination. Moreover, the photoionization spectrum of the co-product suggests formation of 2-methyl-2-cyclopentenone and/or 2-cyclohexenone, resulting from a rapid Dowd–Beckwith rearrangement, preceding addition to O2, of the initial (2-oxocyclopentyl)methyl radical to 3-oxocyclohexyl. Cyclic ethers, markers for hydroperoxyalkyl radicals (QOOH), key intermediates in chain-propagating and chain-branching low-temperature combustion pathways, are only minor products. The interpretation of the experimental results is supported by stationary point calculations on the potential energy surfaces of the associated R + O2 reactions at the CBS-QB3 level. Furthermore, the calculations indicate that HO2-elimination channels are energetically favored and product formation via QOOH is disfavored. Lastly, the prominence of chain-terminating pathways linked with HO2 formation in low-temperature oxidation of cyclic ketones suggests little low-temperature reactivity of these species as fuels in internal combustion engines.« less

  14. Measurements and modeling of HO2 formation in the reactions of n-C3H7 and i-C3H7 radicals with O2.

    SciTech Connect (OSTI)

    Taatjes, Craig A.; Estupinan, Edgar Garcia; Klippenstein, Stephen J.

    2004-08-01

    The formation of HO{sub 2} in the reactions of C{sub 2}H{sub 5}, n-C{sub 3}H{sub 7}, and i-C{sub 3}H{sub 7} radicals with O{sub 2} is investigated using the technique of laser photolysis/long-path frequency-modulation spectroscopy. The alkyl radicals are formed by 266 nm photolysis of alkyl iodides. The formation of HO{sub 2} from the subsequent reaction of the alkyl radicals with O{sub 2} is followed by infrared frequency-modulation spectroscopy. The concentration of I atoms is simultaneously monitored by direct absorption of a second laser probe on the spin?orbit transition. The measured profiles are compared to a kinetic model taken from time-resolved master-equation results based on previously published ab initio characterizations of the relevant stationary points on the potential-energy surface. The ab initio energies are adjusted to produce agreement with the present experimental data and with available literature studies. The isomer specificity of the present results enables refinement of the model for i-C{sub 3}H{sub 7} + O{sub 2} and improved agreement with experimental measurements of HO{sub 2} production in propane oxidation.

  15. Lasing characteristics of ZrO{sub 2}Y{sub 2}O{sub 3}Ho{sub 2}O{sub 3} crystal

    SciTech Connect (OSTI)

    Borik, M A; Lomonova, E E; Kulebyakin, A V; Ushakov, S N; Lyapin, A A; Ryabochkina, P A; Chabushkin, A N

    2013-09-30

    The spectral dependences of the gain cross section of the {sup 5}I{sub 8} ? {sup 5}I{sub 7}, {sup 5}I{sub 7} ? {sup 5}I{sub 8} transition of Ho{sup 3+} ions in the ZrO{sub 2} 13.6 mol % Y{sub 2}O{sub 3} 0.4 mol % Ho{sub 2}O{sub 3} crystal are calculated at different relative population inversions using the absorption and luminescence spectra of the {sup 5}I{sub 8} ? {sup 5}I{sub 7} and {sup 5}I{sub 7} ? {sup 5}I{sub 8} transitions of Ho{sup 3+} ions at T=''300'' K. Lasing of these crystals at the {sup 5}I{sub 7} ? {sup 5}I{sub 8} transition is obtained for the first time under pumping by a Tm : YLiF{sub 4} laser (?{sub p} = 1.905 ?m). The lasing wavelength is 2.17 ?m. (lasers)

  16. Photoluminescence properties of Ho{sup 3+} ion in lithium-fluoroborate glass containing different modifier oxides

    SciTech Connect (OSTI)

    Balakrishna, A. Rajesh, D. Ratnakaram, Y. C.

    2014-04-24

    Trivalent holmium (0.5 mol%) doped lithium fluoro-borate glasses with the chemical compositions 49.5Li{sub 2}B{sub 4}O{sub 7−}20BaF{sub 2−}10NaF−20MO (where M=Mg, Ca, Cd and Pb), 49.5Li{sub 2}B{sub 4}O{sub 7−}20BaF{sub 2−}10NaF−10MgO−10CaO and 49.5Li{sub 2}B{sub 4}O{sub 7−}20BaF{sub 2−}10NaF−10CdO−10PbO were synthesized and investigated their photoluminescence properties. The variation in chemical composition by varying modifier oxides causes changes in the structural spectroscopic behavior of Ho{sup 3+} ions. These changes are examined by UV-VIS- NIR and luminescence spectroscopic techniques. The visible luminescence spectra were obtained by exciting samples at 409 nm radiation.

  17. Low temperature (550-700 K) oxidation pathways of cyclic ketones: Dominance of HO2-elimination channels yielding conjugated cyclic coproducts

    SciTech Connect (OSTI)

    Scheer, Adam M.; Welz, Oliver; Vasu, Subith S.; Osborn, David L.; Taatjes, Craig A.

    2015-04-13

    The low-temperature oxidation of three cyclic ketones, cyclopentanone (CPO; C5H8O), cyclohexanone (CHO; C6H10 O), and 2-methyl-cyclopentanone (2-Me-CPO; CH3–C5H7 O), is studied between 550 and 700 K and at 4 or 8 Torr total pressure. Initial fuel radicals R are formedvia fast H-abstraction from the ketones by laser-photolytically generated chlorine atoms. Intermediates and products from the subsequent reactions of these radicals in the presence of excess O2 are probed with time and isomeric resolution using multiplexed photoionization mass spectrometry with tunable synchrotron ionizing radiation. For CPO and CHO the dominant product channel in the R + O2 reactions is chain-terminating HO2-elimination yielding the conjugated cyclic coproducts 2-cyclopentenone and 2-cyclohexenone, respectively. Results on oxidation of 2-Me-CPO also show a dominant contribution from HO2-elimination. Moreover, the photoionization spectrum of the co-product suggests formation of 2-methyl-2-cyclopentenone and/or 2-cyclohexenone, resulting from a rapid Dowd–Beckwith rearrangement, preceding addition to O2, of the initial (2-oxocyclopentyl)methyl radical to 3-oxocyclohexyl. Cyclic ethers, markers for hydroperoxyalkyl radicals (QOOH), key intermediates in chain-propagating and chain-branching low-temperature combustion pathways, are only minor products. The interpretation of the experimental results is supported by stationary point calculations on the potential energy surfaces of the associated R + O2 reactions at the CBS-QB3 level. Furthermore, the calculations indicate that HO2-elimination channels are energetically favored and product formation via QOOH is disfavored. Lastly, the prominence of chain-terminating pathways linked with HO2 formation in low-temperature oxidation of cyclic ketones suggests little low

  18. Reaction of HO{sub 2} with ClO: Flow tube studies of kinetics and product formation between 215 and 298 K

    SciTech Connect (OSTI)

    Knight, G.P.; Beiderhase, T.; Helleis, F.; Moortgat, G.K.; Crowley, J.N.

    2000-03-02

    Rate coefficients for the reaction between HO{sub 2} and ClO radicals were obtained using the discharge-flow/mass-spectrometry technique at total pressures of 1.1--1.7 Torr of He, and between 298 and 215 K. The room-temperature rate constant, determined using seven different combinations of HO{sub 2} and ClO precursors, was found to be (7.1 {+-} 1.8) x 10{sup {minus}12}({+-}2{sigma})cm{sup 3}s{sup {minus}1}. The temperature-dependent overall reaction rate coefficient is described by k{sub (3)} (298--215 K) = (7.1 {+-} 0.4) x 10{sup {minus}12} exp({minus}16 {+-} 17/T) cm{sub 3}s{sup {minus}1}. The previous observation of a strong negative temperature dependence in the title reaction below 298 K was not observed, resulting in a significantly lower rate coefficient at stratospheric temperatures. HOCl was the only product of the reaction, and an upper limit of 1% for the branching ratio for the formation of O{sub 3} and HCl was obtained at the low pressures of these experiments.

  19. Overcoming phase instability of RBaCo2O5+ (R = Y and Ho) by Sr substitution for application as cathodes in solid oxide fuel cells

    SciTech Connect (OSTI)

    Kim, Jung-Hyun; Young Nam, Kim; Bi, Zhonghe; Manthiram, Arumugam; Paranthaman, Mariappan Parans; Huq, Ashfia

    2013-01-01

    Phase instabilities of the RBaCo2O5+ (R = Y and Ho) layered-perovskites and their decompositions into RCoO3 and BaCoO3-z at 800 oC in air were investigated. This will restrict their high temperature applications such as cathodes in solid oxide fuel cell (SOFC). However, appropriate amount of Sr substitution ( 60 % for R = Y and 70 % for R = Ho) for Ba successfully stabilized the R(Ba1-xSrx)Co2O5+ phase at elevated temperatures. This can be explained by decreasing oxygen vacancies at R-O layer, decreasing R-O bonding length, and consequent improvement of structural integrity. In addition, the Sr substitution (x = 0.6 - 1.0) for Ba provided added benefit with respect to the chemical stability against Ce0.8Gd0.2O1.9 (GDC) electrolyte, which is a critical requirement for the cathodes in SOFC. Among the various compositions investigated, the Y(Ba0.3Sr0.7)Co2O5+ + GDC composite cathode delivered the optimum electrochemical performances with a stable phase demonstrating the potential as a cathode in SOFC.

  20. Synthesis, properties and phase transitions of pyrochlore- and fluorite-like Ln{sub 2}RMO{sub 7} (Ln = Sm, Ho; R = Lu, Sc; M = Nb, Ta)

    SciTech Connect (OSTI)

    Shlyakhtina, A.V.; Belov, D.A.; Pigalskiy, K.S.; Shchegolikhin, A.N.; Kolbanev, I.V.; Karyagina, O.K.

    2014-01-01

    Graphical abstract: Temperature dependences of bulk conductivity for Sm{sub 2}ScTaO{sub 7} pyrochlore prepared at (1) 1400 °C, 20 h; and (2) 1200 °C, 40 h. - Highlights: • The phase formation of Ln{sub 2}RMO{sub 7} (Ln = Sm, Ho; R = Lu, Sc; M = Nb, Ta) at 1200–1600 °C. • The bulk conductivity and magnetic susceptibility were measured. • The bulk conductivity of Sm{sub 2}ScTaO{sub 7} has oxygen ion type at T ≥ 750 °C. • The first-order structural phase transition was observed in Sm{sub 2}ScTaO{sub 7} at ∼650–700 °C. • This phase transformation is not typical for defect fluorites. - Abstract: We have studied the new compounds with fluorite-like (Ho{sub 2}RNbO{sub 7} (R = Lu, Sc)) and pyrochlore-like (Sm{sub 2}ScTaO{sub 7}) structure as potential oxide ion conductors. The phase formation process (from 1200 to 1600 °C) and physical properties (electrical, thermo mechanical, and magnetic) for these compounds were investigated. Among the niobate materials the highest bulk conductivity is offered by the fluorite-like Ho{sub 2}ScNbO{sub 7} synthesized at 1600 °C: 3.8 × 10{sup −5} S/cm at 750 °C, whereas in Sm system the highest bulk conductivity, 7.3 × 10{sup −6} S/cm at 750 °C, is offered by the pyrochlore Sm{sub 2}ScTaO{sub 7} synthesized at 1400 °C. In Sm{sub 2}ScTaO{sub 7} pyrochlore we have observed the first-order phase transformation at ∼650–700 °C is related to rearrangement process in the oxygen sublattice of the pyrochlore structure containing B-site cations in different valence state and actually is absent in the defect fluorites. The two holmium niobates show Curie–Weiss paramagnetic behavior, with the prevalence of antiferromagnetic coupling. The magnetic susceptibility of Sm{sub 2}ScTaO{sub 7} is a weak function of temperature, corresponding to Van Vleck paramagnetism.

  1. Experimental and theoretical rate constants for CH{sub 4} + O{sub 2} {yields} CH{sub 3} + HO{sub 2}

    SciTech Connect (OSTI)

    Srinivasan, N.K.; Michael, J.V.; Harding, L.B.; Klippenstein, S.J.

    2007-04-15

    In this study, rate constants for the primary initiation process in low to moderate temperature CH{sub 4} oxidation CH{sub 4} + O{sub 2} {yields} CH{sub 3} + HO{sub 2} have been measured in a reflected shock tube apparatus between 1655 and 1822 K using multipass absorption spectrometric detection of OH radicals at 308 nm. After rapid dissociation of HO{sub 2} yielding H atoms, which are instantaneously converted to OH by H + O{sub 2} {yields} OH + O, the temporal concentration of OH radicals was observed as the final product from the rate-controlling title reaction. The present work utilizes 18 optical passes corresponding to a total path length of 1.6 m. This configuration gives a signal to noise ratio of unity at {proportional_to}3 x 10{sup 12} radicals cm{sup -3}. Hence, kinetics experiments could be performed at conditions of low [CH{sub 4}]{sub 0} (60-70 ppm), thereby substantially reducing secondary chemistry. Possible implications of CH{sub 4} dissociation contributing to the OH formation rates were considered. The present experimental results agree with a priori variational transition state theoretical (VTST) calculations, k{sub th}=3.37 x 10{sup -19}T{sup 2.745} exp (-26,041K/T)cm{sup 3}molecule{sup -1} s{sup -1}, clearly showing overlap of experiment and theory, within experimental error. The new rate constant values obtained in this study are 8-10 times higher than the values used in the popular mechanisms GRI-Mech 3.0 and Leeds Methane Mechanism, version 1.5. (author)

  2. Syntheses, structure and rare earth metal photoluminescence of new and known isostructural A{sub 2}Mo{sub 4}Sb{sub 2}O{sub 18} (A=Ce, Pr, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu) compounds

    SciTech Connect (OSTI)

    Mohitkar, Shrikant A.; Kalpana, G.; Vidyasagar, K.

    2011-04-15

    Nine new A{sub 2}Mo{sub 4}Sb{sub 2}O{sub 18} (A=Ce, Pr, Eu, Tb, Ho, Er, Tm, Yb, Lu) compounds have been synthesized by solid-state reactions. They are isostructural with six reported analogues of yttrium and other lanthanides and the monoclinic unit cell parameters of all fifteen of them vary linearly with the size of A{sup 3+} ion. Single crystal X-ray structures of eight A{sub 2}Mo{sub 4}Sb{sub 2}O{sub 18} (A=Ce, Pr, Eu, Gd, Tb, Ho, Er, Tm) compounds have been determined. Neat A{sub 2}Mo{sub 4}Sb{sub 2}O{sub 18} (A=Pr, Sm, Eu, Tb, Dy, Ho, Er, Tm) compounds exhibit characteristic rare earth metal photoluminescence. -- Graphical abstract: Among the fifteen isostructural A{sub 2}Mo{sub 4}Sb{sub 2}O{sub 18} (A=rare earth metal) molybdoantimonites, eight (A=Pr, Sm, Eu, Tb, Dy, Ho, Er, Tm) compounds exhibit neat characteristic lanthanide photoluminescence in the 200-800 nm range at room temperature. Display Omitted Research highlights: {yields} Syntheses of nine new A{sub 2}Mo{sub 4}Sb{sub 2}O{sub 18} (A=Ce, Pr, Eu, Tb, Ho, Er, Tm, Yb, Lu) compounds. {yields} X-ray structures of eight A{sub 2}Mo{sub 4}Sb{sub 2}O{sub 18} (A=Ce, Pr, Eu, Gd, Tb, Ho, Er, Tm) compounds. {yields} Photoluminescence of neat A{sub 2}Mo{sub 4}Sb{sub 2}O{sub 18} (A=Pr, Sm, Eu, Tb, Dy, Ho, Er, Tm) compounds.

  3. Solar Startup Semprius to Create 250 Jobs in North Carolina at...

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

    Startup Semprius to Create 250 Jobs in North Carolina at Cutting-Edge Pilot Plant Solar ... Semprius Minh Le Minh Le Deputy Director, Solar Energy Technologies Office Energy ...

  4. The structure, thermal expansion and phase transition properties of Ho{sub 2}Mo{sub 3−x}W{sub x}O{sub 12} (x = 0, 1.0, 2.0) solid solutions

    SciTech Connect (OSTI)

    Liu, X.Z.; Hao, L.J.; Wu, M.M.; Ma, X.B.; Chen, D.F.; Liu, Y.T.

    2015-10-15

    Graphical abstract: A polymorph with Gd{sub 2}Mo{sub 3}O{sub 12}-type structure (space group: Pba2) for negative thermal expansion material Ho{sub 2}Mo{sub 3}O{sub 12} is observed above 700 °C, this polymorphism could be effectively supressed by W-substiution for Mo, the give the temperature dependence of Pba2 phase contents for Ho{sub 2}Mo{sub 3−x}W{sub x}O{sub 12} (x = 0.0, 1.0, 2.0). - Highlights: • The solid solution Ho{sub 2}Mo{sub 3−x}W{sub x}O{sub 12} was investigated by in situ X-ray diffraction. • It is found that the substitution slightly influence thermal expansion property. • A polymorph of Ho{sub 2}Mo{sub 3}O{sub 12} with Pba2 space group was observed above 700 °C. • The W-substitution for Mo effectively suppresses this transformation. - Abstract: Three solid solutions of Ho{sub 2}Mo{sub 3−x}W{sub x}O{sub 12}(x = 0, 1.0, 2.0) were prepared by solid state reaction method, the temperature dependent in-situ X-ray diffraction and thermal analysis were performed to investigate their structure and thermal expansion. All samples have orthorhombic structure(space group Pbcn# 60) with negative thermal expansion at the room temperature. the substitution of W for Mo enlarges the lattice constant and slightly influences the negative thermal expansion. An irreversible phase transformation to the Pba2 phase(Tb{sub 2}Mo{sub 3}O{sub 12} structure) was observed at high temperature for Mo-rich samples. This ploymorphism could be effectively suppressed by the W-substitution for Mo, this phenomenon could be explained by the lower electronegativity of W{sup 6+} than Mo{sup 6+}.

  5. Electric dipole moments of light nuclei from {chi}EFT

    SciTech Connect (OSTI)

    Higa, Renato

    2013-03-25

    I present recent calculations of EDMs of light nuclei using chiral effective field theory techniques. At leading-order, we argue that they can be expressed in terms of six CP-violating low-energy constants. With our expressions, eventual non-zero measurements of EDMs of deuteron, helion, and triton can be combined to disentangle the different sources of CP-violation.

  6. Chi-Nu "Gate Review" (Conference) | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    Authors: White, Morgan C. 1 ; Haight, Robert C. 1 ; Perdue, Brent A. 1 ; Wu, Ching-Yen 1 ; Talou, Patrick 1 ; Taddeucci, Terry N. 1 ; Neudecker, Denise 1 + Show ...

  7. Optical and magneto-optical properties of single crystals of RFe{sub 2} (R = Gd, Tb, Ho, and Lu) and GdCo{sub 2} intermetallic compounds

    SciTech Connect (OSTI)

    Lee, S.J.

    1999-02-12

    The author has studied the diagonal and off-diagonal optical conductivity of RFe{sub 2}(R = Gd, Tb, Ho, Lu) and GdCo{sub 2} single crystals grown by the flux method. Using spectroscopic ellipsometry the author has measured the dielectric function from 1.5 to 5.5 eV. The magneto-optical Kerr spectrometer at temperatures between 7 and 295 K and applied magnetic fields between 0.5 to 1.6 T. The apparatus and calibration method are described in detail. Using magneto-optical data and optical constants he derives the experimental value of the off-diagonal conductivity components. Theoretical calculations of optical conductivities and magneto-optical parameters were performed using the tight binding-linear muffin tin orbitals method within the local spin density approximation. He applied this TB-LMTO method to LuFe{sub 2}. The theoretical results obtained agree well with the experimental data. The oxidation effects on the diagonal part of the optical conductivity were considered using a three-phase model. The oxidation effects on the magneto-optical parameters were also considered by treating the oxide layer as a nonmagnetic thin transparent layer. These corrections change not only the magnitude but also the shape of the optical conductivity and the magneto-optical parameters.

  8. Magnetic structures of R5Ni2In4 and R 11Ni4In9 ( R = Tb and Ho): strong hierarchy in the temperature dependence of the magnetic ordering in the multiple rare-earth sublattices

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

    Ritter, C.; Provino, A.; Manfrinetti, P.; Pecharsky, V. K.; Gschneidner, K. A.; Dhar, S. K.

    2015-11-09

    The magnetic properties and magnetic structures of the R5Ni2In4 and the microfibrous R 11Ni4In9 compounds with R = Tb and Ho have been examined using magnetization, heat capacity, and neutron diffraction data. Rare earth atoms occupy three and five symmetrically inequivalent rare earth sites in R5Ni2In4 and R 11Ni4In9 compounds, respectively. As a result of the intra- and inter-magnetic sublattice interactions, the magnetic exchange interactions are different for various rare earth sites; this leads to a cascade of magnetic transitions with a strong hierarchy in the temperature dependence of the magnetic orderings.

  9. Optical amplification in disordered electrooptic Tm{sup 3+} and Ho{sup 3+} codoped lanthanum-modified lead zirconate titanate ceramics and study of spectroscopy and communication between cations

    SciTech Connect (OSTI)

    Zhao, Hua; Zhang, Kun; Xu, Long; Sun, Fankui; Zhang, Jingwen; Chen, Xuesheng; Li, Kewen K.

    2014-02-21

    Rare earth doped electro-optic (EO) ceramics of lanthanum-modified lead zirconate titanate (PLZT) are promising in building multifunctional optical devices, by taking advantage of both EO effect and optical activity. In this work, the combination of the measured spectra of absorption and photoluminescence, the fluorescent decay, the calculated Judd-Ofelt parameters, and measured single pass gain in Tm{sup 3+}, Ho{sup 3+} codoped PLZT ceramics have marked them out as promising gain media in building electrically controllable lasers/optical amplifiers and other multifunctional devices. Optical energy storage was also observed in the optical amplification dynamics.

  10. Temperature dependence of the radiation tolerance of nanocrystalline pyrochlores A2Ti2O7 (A = Gd, Ho and Lu)

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

    Wen, J.; Sun, C.; Dholabhai, P. P.; Xia, Y.; Tang, M.; Chen, D.; Yang, D. Y.; Li, Y. H.; Uberuaga, B. P.; Wang, Y. Q.

    2016-03-21

    A potentially enhanced radiation resistance of nanocrystalline materials, as a consequence of the high density of interfaces and surfaces, has attracted much attention both to understand the fundamental role of these defect sinks and to develop them for high-radiation environments. Here, irradiation response of nanocrystalline A2Ti2O7 (A = Gd, Ho and Lu) pyrochlore powders with grain sizes of 20–30 nm was investigated by 1-MeV Kr2+ ion bombardment. In situ transmission electron microscopy (TEM) revealed that the critical amorphization fluence for each nanocrystalline compound at room temperature was greater than that for their coarse-grained counterparts, indicating an enhanced amorphization resistance. Themore » effect of temperature on the irradiation response of one of these compounds, nanocrystalline Lu2Ti2O7, was further examined by performing ion irradiation at an elevated temperature range of 480–600 K. The critical amorphization temperature (Tc) was found to be noticeably higher in nanocrystalline Lu2Ti2O7 (610 K) than its coarse-grained counterpart (480 K), revealing that nanocrystalline Lu2Ti2O7 is less resistant to amorphization compared to its coarse-grained phase under high temperatures. We interpret these results with the aid of atomistic simulations. Molecular statics calculations find that cation antisite defects are less energetically costly to form near surfaces than in the bulk, suggesting that the nanocrystalline form of these materials is generally less susceptible to amorphization than coarse-grained counterparts at low temperatures where defect kinetics are negligible. In contrast, at high temperatures, the annealing efficiency of antisite defects by cation interstitials is significantly reduced due to the sink properties of the surfaces in the nanocrystalline pyrochlore, which contributes to the observed higher amorphization temperature in the nano-grained phase than in coarse-grained counterpart. Altogether, these results provide new

  11. Decay properties of long-lived isomers in the odd-odd N=81 nucleus {sup 146}Tb compared to the {sup 148}Ho and {sup 150}Tm nuclei

    SciTech Connect (OSTI)

    Kownacki, J.; Kisielinski, M.; Droste, Ch.; Morek, T.; Ruchowska, E.; Grodner, E.; Lieder, R. M.; Kowalczyk, M.; Wrzosek-Lipska, K.; Hadynska-KlePk, K.; Mierzejewski, J.; Andrzejewski, J.; Perkowski, J.; Napiorkowski, P. J.; Zielinska, M.; Kordyasz, A.; Srebrny, J.; Korman, A.

    2011-02-15

    Excited states of the {sup 146}Tb nucleus have been studied using {gamma}-ray and electron spectroscopy in off-beam and in-beam modes following {sup 112}Sn({sup 40}Ar,3n3p) reaction with the use of the OSIRIS-II, HPGe detector array and the conversion electron spectrometer. The multipolarity of the 343 keV transition deexciting the (7{sup -}) level in {sup 146}Tb shows mainly an E2 nature and the first excited state above the 23 s isomer is assigned as a (5{sup -},6{sup -}) state. The log ft values have been deduced for 11 {beta}{sup +}/EC transitions populating excited states in {sup 146}Gd. The systematic behavior of spins and parities of the long-lived levels at 0+x keV and the first excited states above them in the N=81 isotones {sup 146}Tb, {sup 148}Ho, and {sup 150}Tm is discussed.

  12. Magnetic structures of R5Ni2In4 and R11Ni4In9 ( R = Tb and Ho): Strong hierarchy in the temperature dependence of the magnetic ordering in the multiple rare-earth sublattices

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

    Ritter, C.; Provino, A.; Manfrinetti, P.; Pecharsky, V. K.; Gschneidner, Jr., K. A.; Dhar, S. K.

    2015-11-09

    In this study, the magnetic properties and magnetic structures of the R5Ni2In4 and the microfibrous R 11Ni4In9 compounds with R = Tb and Ho have been examined using magnetization, heat capacity, and neutron diffraction data. Rare earth atoms occupy three and five symmetrically inequivalent rare earth sites in R5Ni2In4 and R 11Ni4In9 compounds, respectively. As a result of the intra- and inter-magnetic sublattice interactions, the magnetic exchange interactions are different for various rare earth sites; this leads to a cascade of magnetic transitions with a strong hierarchy in the temperature dependence of the magnetic orderings.

  13. Band gap tuning and orbital mediated electron–phonon coupling in HoFe{sub 1−x}Cr{sub x}O{sub 3} (0 ≤ x ≤ 1)

    SciTech Connect (OSTI)

    Kotnana, Ganesh; Jammalamadaka, S. Narayana

    2015-09-28

    We report on the evidenced orbital mediated electron–phonon coupling and band gap tuning in HoFe{sub 1−x}Cr{sub x}O{sub 3} (0 ≤ x ≤ 1) compounds. From the room temperature Raman scattering, it is apparent that the electron-phonon coupling is sensitive to the presence of both the Fe and Cr at the B-site. Essentially, an A{sub g} like local oxygen breathing mode is activated due to the charge transfer between Fe{sup 3+} and Cr{sup 3+} at around 670 cm{sup −1}, this observation is explained on the basis of Franck-Condon mechanism. Optical absorption studies infer that there exists a direct band gap in the HoFe{sub 1−x}Cr{sub x}O{sub 3} (0 ≤ x ≤ 1) compounds. Decrease in band gap until x = 0.5 is ascribed to the broadening of the oxygen p-orbitals as a result of the induced spin disorder due to Fe{sup 3+} and Cr{sup 3+} at B-site. In contrast, the increase in band gap above x = 0.5 is explained on the basis of the reduction in the available unoccupied d-orbitals of Fe{sup 3+} at the conduction band. We believe that above results would be helpful for the development of the optoelectronic devices based on the ortho-ferrites.

  14. Magnetic properties and magnetocaloric effect in the RCu{sub 2}Si{sub 2} and RCu{sub 2}Ge{sub 2} (R = Ho, Er) compounds

    SciTech Connect (OSTI)

    Mo, Zhao-Jun; Shen, Jun E-mail: tangcc@hebut.edu.cn; Wu, Jian-Feng; Yan, Li-Qin; Wang, Li-Chen; Sun, Ji-rong; Shen, Bao-Gen; Gao, Xin-Qiang; Tang, Cheng-Chun E-mail: tangcc@hebut.edu.cn

    2014-02-21

    The magnetic properties and magnetocaloric effect (MCE) in RCu{sub 2}Si{sub 2} and RCu{sub 2}Ge{sub 2} (R = Ho, Er) compounds have been investigated. All these compounds possess an antiferromagnetic (AFM)-paramagnetic (PM) transition around their respective Neel temperatures. The RCu{sub 2}Si{sub 2} compounds undergo spin-glassy behavior above Neel temperature. Furthermore, a field-induced metamagnetic transition from AFM to ferromagnetic (FM) states is observed in these compounds. The calculated magnetic entropy changes show that all RCu{sub 2}Si{sub 2} and RCu{sub 2}Ge{sub 2} (R = Ho, Er) compounds, especially, ErCu{sub 2}Si{sub 2} exhibits large MCEs with no thermal hysteresis and magnetic hysteresis loss. The value of −ΔS{sub M}{sup max} reaches 22.8 J/Kg K for magnetic field changes from 0 to 5 T. In particular, for field changes of 1 and 2 T, the giant reversible magnetic entropy changes −ΔS{sub M}{sup max} are 8.3 and 15.8 J/kg K at 2.5 K, which is lower than the boiling point of helium. The low-field giant magnetic entropy change, together with ignorable thermal hysteresis and field hysteresis loss of ErCu{sub 2}Si{sub 2} compound is expected to have effective applications in low temperature magnetic refrigeration.

  15. Correlation between upconversion photoluminescence and dielectric response in Ba-substituted (Sr{sub 1?x}Ba{sub x}){sub 4}(La{sub 0.85}Ho{sub 0.025}Yb{sub 0.125}){sub 2}Ti{sub 4}Nb{sub 6}O{sub 30}

    SciTech Connect (OSTI)

    Wei, T.; Wang, X. D.; Zhao, C. Z.; Liu, M. F.; Liu, J. M.

    2014-06-30

    The filled tetragonal tungsten bronze (Sr{sub 1?x}Ba{sub x}){sub 4}(La{sub 0.85}Ho{sub 0.025}Yb{sub 0.125}){sub 2}Ti{sub 4}Nb{sub 6}O{sub 30} (SBLTNx: Ho-Yb) ceramics with different Ba substitution levels (x) are prepared. The upconversion photoluminescence (UC-PL) and dielectric permittivity are investigated. The substitution of Sr{sup 2+} ions at the A{sub 2}-sites by larger Ba{sup 2+} ions results in substantial variation of the UC-PL intensity as a function of substitution level x. Furthermore, the dielectric response to the substitution of Sr{sup 2+} by Ba{sup 2+} suggests a close correlation between the UC-PL intensity and dielectric permittivity. The origin for this correlation is discussed based on the random stress field (RSF) model.

  16. Synthesis of nanocrystalline REBO{sub 3} (RE=Y, Nd, Sm, Eu, Gd, Ho) and YBO{sub 3}:Eu using a borohydride-based solution precursor route

    SciTech Connect (OSTI)

    Henkes, Amanda E.; Schaak, Raymond E.

    2008-12-15

    A solution precursor route has been used to synthesize a series of nanocrystalline rare-earth borates. Amorphous precursor powders are precipitated during an aqueous reaction between RE{sup 3+} and NaBH{sub 4}, and the isolated powders can be annealed in air at 700 deg. C to form YBO{sub 3}, NdBO{sub 3}, SmBO{sub 3}, EuBO{sub 3}, GdBO{sub 3}, and HoBO{sub 3}. YBO{sub 3}:Eu formed using this strategy shows red-orange emission properties that are similar to high-quality nanocrystals prepared by other methods. The materials have been characterized by FTIR spectroscopy, powder XRD, SEM, DSC, UV-Vis fluorimetry, and TEM with EDS and element mapping. - Graphical abstract: Amorphous nanoscopic precursor powders are formed through the aqueous reaction of RE{sup 3+} with NaBH{sub 4}. Once isolated, the powders can be annealed at 700 deg. C in air to form a series of nanocrystalline REBO{sub 3} orthoborates. Nanocrystalline YBO{sub 3}:Eu formed using this strategy shows red-orange emission properties when excited with UV light.

  17. 3 Ways Solar Energy Programs Are Helping Achieve President Obama...

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

    Minh Le Minh Le Deputy Director, Solar Energy Technologies Office Since President Obama took office in 2009, U.S. solar energy capacity has grown more than twenty-fold. And solar ...

  18. 2014 SunShot Grand Challenge Summit Opening Session Photos |...

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

    Anaheim Mayor Tom Tait with SunShot Director Minh Le Credit: SunShot Initiative Date ... SunShot Grand Challenge Summit Opening Session SunShot Director Minh Le Credit: SunShot ...

  19. Syntheses and properties of a family of new compounds RE{sub 3}Sb{sub 3}Co{sub 2}O{sub 14} (RE=La, Pr, Nd, Sm–Ho) with an ordered pyrochlore structure

    SciTech Connect (OSTI)

    Li, Kuo; Hu, Yufei; Wang, Yingxia; Kamiyama, Takashi; Wang, Bingwu; Li, Zhaofei; Lin, Jianhua

    2014-09-15

    Isostructural compounds RE{sub 3}Sb{sub 3}Co{sub 2}O{sub 14} (RE=La, Pr, Nd, Sm–Ho) with an ordered pyrochlore structure were synthesized. The structure of La{sub 3}Sb{sub 3}Co{sub 2}O{sub 14} was solved ab initio based on powder XRD data, and refined by combining with high resolution neutron diffraction data. La{sub 3}Sb{sub 3}Co{sub 2}O{sub 14} crystallizes in the space group R-3m with the unit cell parameters a=7.52954(2) Å and c=17.59983(6) Å. The structures of other members in this family are confirmed by Rietveld refinement using powder X-ray diffraction data. The cations (RE, Sb and Co) in RE{sub 3}Sb{sub 3}Co{sub 2}O{sub 14} are orderly distributed, presenting as [RE{sub 3}Co][Sb{sub 3}Co]O{sub 14} formula, and giving rise to two distinctive Kagome lattices constructed by RE{sup 3+} and Sb{sup 5+}, respectively. Co{sup 2+} occupies 8-coordinated and 6-coordinated environments, showing low spin (S=1/2) and high spin (S=3/2) states respectively. The magnetic susceptibility and UV–visual spectroscopy supports the magnetic observation. TDDFT calculation was performed to interpret the electronic states. The compounds [RE{sub 3}Co][Sb{sub 3}Co]O{sub 14} provide a profound example in which the ideal 2D Kagome lattice is derived from the 3D pyrochlore-type structure by an ordered distribution of the metal cations. - Graphical abstract: La{sub 3}Sb{sub 3}Co{sub 2}O{sub 14} crystallizes in a pyrochlore related structure with an ordered distribution of cations, giving rise to two sets of ideal 2D Kagome lattices formed by La{sup 3+} or Sb{sup 5+} respectively. This rhombohedral pyrochlore is a tolerant structure for stable compounds composed by many light rare-earth and d-transition elements. Substituting Zn{sup 2+} or Mg{sup 2+} for Co{sup 2+} will provide a series of compounds useful for studying magnetic interactions in the rare-earth Kagome lattices. - Highlights: • Pyrochlore-type La{sub 3}Sb{sub 3}Co{sub 2}O{sub 14} shows an ordered distribution of

  20. Microsoft PowerPoint - Chi_2016_StaffScienceHiglight_NatComm...

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

    at critical annealing stages: the formation of a Pt-rich shell with a randomly alloyed core; the preferential nucleation of ordered domains associated with specific surface...

  1. Two-pseudoscalar-meson decay of {chi}{sub cJ} with twist-3 corrections...

    Office of Scientific and Technical Information (OSTI)

    After including the effects from the transverse momentum of light meson valence-quark state and Sudakov factors, the decay widths of the chisub cJ into pions or kaons are ...

  2. Hadronic decays of the X(3872) to {chi}{sub cJ} in effective...

    Office of Scientific and Technical Information (OSTI)

    Hadronic decays of the X(3872) to chisub cJ in effective field theory Citation Details In-Document Search Title: Hadronic decays of the X(3872) to chisub cJ in effective ...

  3. Magnetic structures of R5Ni2In4 and R11Ni4In9 ( R = Tb and Ho): Strong hierarchy in the temperature dependence of the magnetic ordering in the multiple rare-earth sublattices

    SciTech Connect (OSTI)

    Ritter, C.; Provino, A.; Manfrinetti, P.; Pecharsky, V. K.; Gschneidner, Jr., K. A.; Dhar, S. K.

    2015-11-09

    In this study, the magnetic properties and magnetic structures of the R5Ni2In4 and the microfibrous R 11Ni4In9 compounds with R = Tb and Ho have been examined using magnetization, heat capacity, and neutron diffraction data. Rare earth atoms occupy three and five symmetrically inequivalent rare earth sites in R5Ni2In4 and R 11Ni4In9 compounds, respectively. As a result of the intra- and inter-magnetic sublattice interactions, the magnetic exchange interactions are different for various rare earth sites; this leads to a cascade of magnetic transitions with a strong hierarchy in the temperature dependence of the magnetic orderings.

  4. Qinghai Ruifa Hydropower Co Ltd | Open Energy Information

    Open Energy Info (EERE)

    Ruifa Hydropower Co Ltd Jump to: navigation, search Name: Qinghai Ruifa Hydropower Co., Ltd Place: Minhe County, Qinghai Province, China Zip: 810800 Sector: Hydro Product:...

  5. PRESENTATION: OVERVIEW OF THE SUNSHOT INITIATIVE

    Broader source: Energy.gov [DOE]

    A briefing to the Secretary's Energy Advisory Board on the SunShot Initiative delivered by Minh Le, Director of the SunShot Initiative. 

  6. Mo{sub 2}NiB{sub 2}-type (Gd, Tb, Dy){sub 2}Ni{sub 2.35}Si{sub 0.65} and La{sub 2}Ni{sub 3}-type (Dy, Ho){sub 2}Ni{sub 2.5}Si{sub 0.5} compounds: Crystal structure and magnetic properties

    SciTech Connect (OSTI)

    Morozkin, A.V.; Isnard, O.; Nirmala, R.; Malik, S.K.

    2015-05-15

    The crystal structure of new Mo{sub 2}NiB{sub 2}-type (Gd, Tb, Dy){sub 2}Ni{sub 2.35}Si{sub 0.65} (Immm, No. 71, oI10) and La{sub 2}Ni{sub 3}-type (Dy, Ho){sub 2}Ni{sub 2.5}Si{sub 0.5} (Cmce No. 64, oC20) compounds has been established using powder X-ray diffraction studies. Magnetization measurements show that the Mo{sub 2}NiB{sub 2}-type Gd{sub 2}Ni{sub 2.35}Si{sub 0.65} undergoes a ferromagnetic transition at ~66 K, whereas isostructural Tb{sub 2}Ni{sub 2.35}Si{sub 0.65} shows an antiferromagnetic transition at ~52 K and a field-induced metamagnetic transition at low temperatures. Neutron diffraction study shows that, in zero applied field, Tb{sub 2}Ni{sub 2.35}Si{sub 0.65} exhibits c-axis antiferromagnetic order with propagation vector K=[1/2, 0, 1/2] below its magnetic ordering temperature and Tb magnetic moment reaches a value of 8.32(5) μ{sub B} at 2 K. The La{sub 2}Ni{sub 3}-type Dy{sub 2}Ni{sub 2.5}Si{sub 0.5} exhibits ferromagnetic like transition at ~42 K with coexisting antiferromagnetic interactions and field induced metamagnetic transition below ~17 K. The magnetocaloric effect of Gd{sub 2}Ni{sub 2.35}Si{sub 0.65}, Tb{sub 2}Ni{sub 2.35}Si{sub 0.65} and Dy{sub 2}Ni{sub 2.5}Si{sub 0.5} is calculated in terms of isothermal magnetic entropy change and it reaches a maximum value of −14.3 J/kg K, −5.3 J/kg K and −10.3 J/kg K for a field change of 50 kOe near 66 K, 52 K and 42 K, respectively. Low temperature magnetic ordering with enhanced anisotropic effects in Tb{sub 2}Ni{sub 2.35}Si{sub 0.65} and Dy{sub 2}Ni{sub 2.35}Si{sub 0.65} is accompanied by a positive magnetocaloric effect with isothermal magnetic entropy changes of +12.8 J/kg K and ~+9.9 J/kg K, respectively at 7 K for a field change of 50 kOe. - Graphical abstract: The (Gd, Tb, Dy){sub 2}Ni{sub 2.35}Si{sub 0.65} supplement the series of Mo{sub 2}NiB{sub 2}-type rare earth compounds, whereas the (Dy, Ho){sub 2}Ni{sub 2.5}Si{sub 0.5} supplement the series of La{sub 2}Ni{sub 3}-type rare

  7. Magnetic and magnetothermodynamic properties of Ho5Si4 (Conference...

    Office of Scientific and Technical Information (OSTI)

    For a field change (DeltaH) of 50 kOe, the maximum values of isothermal magnetic entropy ... of DeltaSsub M is estimated to be -12.6 J kgsup -1 Ksup -1 for DeltaH 50 kOe. ...

  8. Kick-Off Speakers

    Broader source: Energy.gov [DOE]

    The kick-off speakers at Monday's networking event are Minh Le, Director of the DOE SunShot Initiative, and Tom Tait, Mayor of the City of Anaheim.

  9. Tuesday Opening Address | Department of Energy

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

    0, 2014 12:30PM to 1:00PM PDT Pacific Ballroom Featuring Minh Le, Director of the SunShot Initiative, and Ramamoorthy Ramesh, Deputy Director for Science and Technology at Oak Ridge National Laboratory

  10. Three Military Bases Partner with Energy Department to Train...

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

    rapidly, and demand for highly skilled solar workers is on the rise," said Minh Le, director, SunShot Initiative. "This new solar energy job training program will help our...

  11. Isolation and bacterial expression of a sesquiterpene synthase CDNA clone from peppermint(mentha .chi. piperita, L.) that produces the aphid alarm pheromone (E)-.beta.-farnesene

    DOE Patents [OSTI]

    Croteau, Rodney Bruce; Wildung, Mark Raymond; Crock, John E.

    1999-01-01

    A cDNA encoding (E)-.beta.-farnesene synthase from peppermint (Mentha piperita) has been isolated and sequenced, and the corresponding amino acid sequence has been determined. Accordingly, an isolated DNA sequence (SEQ ID NO:1) is provided which codes for the expression of (E)-.beta.-farnesene synthase (SEQ ID NO:2), from peppermint (Mentha piperita). In other aspects, replicable recombinant cloning vehicles are provided which code for (E)-.beta.-farnesene synthase, or for a base sequence sufficiently complementary to at least a portion of (E)-.beta.-farnesene synthase DNA or RNA to enable hybridization therewith. In yet other aspects, modified host cells are provided that have been transformed, transfected, infected and/or injected with a recombinant cloning vehicle and/or DNA sequence encoding (E)-.beta.-farnesene synthase. Thus, systems and methods are provided for the recombinant expression of the aforementioned recombinant (E)-.beta.-farnesene synthase that may be used to facilitate its production, isolation and purification in significant amounts. Recombinant (E)-.beta.-farnesene synthase may be used to obtain expression or enhanced expression of (E)-.beta.-farnesene synthase in plants in order to enhance the production of (E)-.beta.-farnesene, or may be otherwise employed for the regulation or expression of (E)-.beta.-farnesene synthase, or the production of its product.

  12. Entrepreneurs Celebrated at White House Demo Day | Department of Energy

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

    Entrepreneurs Celebrated at White House Demo Day Entrepreneurs Celebrated at White House Demo Day August 4, 2015 - 1:50pm Addthis Entrepreneurs Celebrated at White House Demo Day Minh Le Minh Le Deputy Director, Solar Energy Technologies Office Today, President Obama is hosting the first-ever White House Demo Day, showcasing entrepreneurs who have launched innovative businesses across the country. The event will highlight a diverse set of entrepreneurs: people whose stories show why America

  13. SunShot Initiative Researcher Wins National Medal of Technology and

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

    Innovation | Department of Energy SunShot Initiative Researcher Wins National Medal of Technology and Innovation SunShot Initiative Researcher Wins National Medal of Technology and Innovation October 7, 2011 - 11:10am Addthis SunShot Initiative Researcher Wins National Medal of Technology and Innovation Minh Le Minh Le Deputy Director, Solar Energy Technologies Office Last week, President Obama recognized Dr. Rakesh Agrawal with the National Medal of Technology and Innovation -- the nation's

  14. White House Leadership Summit on Women, Climate and Energy | Department of

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

    Energy Dr. Siva Sivananthan at the Sivananthan Laboratories in Bolingbrook, Illinois. | Photo courtesy of Megan Strand, UIC Dr. Siva Sivananthan at the Sivananthan Laboratories in Bolingbrook, Illinois. | Photo courtesy of Megan Strand, UIC Minh Le Minh Le Deputy Director, Solar Energy Technologies Office What are the key facts? Dr. Sivananthan, a 2009 SunShot Incubator awardee, was recently recognized by the White House as part of the Immigrant Innovator Champions of Change initiative. Dr.

  15. Sung-Hou Kim, 1987 | U.S. DOE Office of Science (SC)

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

    Inspires Solar Energy Visionaries SunShot Incubator Inspires Solar Energy Visionaries January 16, 2013 - 12:43pm Addthis Minh Le Minh Le Deputy Director, Solar Energy Technologies Office What does this project do? In the latest round of SunShot Incubator, the Energy Department is investing $12 million to accelerate solar energy innovation. For more information and application requirements, check out the Funding Opportunity Announcement. It's the type of challenge bold pioneers eagerly embrace.

  16. New Energy Department Partnership Creates Solar Bridges to Energy Security

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

    | Department of Energy New Energy Department Partnership Creates Solar Bridges to Energy Security New Energy Department Partnership Creates Solar Bridges to Energy Security July 7, 2015 - 3:21pm Addthis New Energy Department Partnership Creates Solar Bridges to Energy Security Minh Le Minh Le Deputy Director, Solar Energy Technologies Office Solar energy is becoming more accessible to Americans as the SunShot Initiative's goals come closer to fruition. However, solar is not yet affordable

  17. SunShot Incubator Inspires Solar Energy Visionaries | Department of Energy

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

    SunShot Incubator Inspires Solar Energy Visionaries SunShot Incubator Inspires Solar Energy Visionaries January 16, 2013 - 12:43pm Addthis Minh Le Minh Le Deputy Director, Solar Energy Technologies Office What does this project do? In the latest round of SunShot Incubator, the Energy Department is investing $12 million to accelerate solar energy innovation. For more information and application requirements, check out the Funding Opportunity Announcement. It's the type of challenge bold pioneers

  18. Materials Data on Ho2CdS4 (SG:119) by Materials Project

    SciTech Connect (OSTI)

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  19. Materials Data on Cd(HO)2 (SG:8) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  20. Materials Data on Ho2CdSe4 (SG:227) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  1. Materials Data on Sr(HO)2 (SG:62) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  2. Materials Data on Ho3(SiCu)4 (SG:71) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  3. Materials Data on Ho(Al2Fe)4 (SG:139) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  4. Materials Data on HoAg2 (SG:139) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  5. Materials Data on HoInAg2 (SG:225) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2015-03-09

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  6. Materials Data on HoFe3 (SG:166) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  7. Materials Data on Ho(FeGe)2 (SG:139) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  8. Materials Data on KP(HO2)2 (SG:2) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  9. Materials Data on Gd(HO)3 (SG:176) by Materials Project

    SciTech Connect (OSTI)

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  10. Materials Data on Ho3ScO6 (SG:148) by Materials Project

    SciTech Connect (OSTI)

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  11. Materials Data on Ho6WO12 (SG:148) by Materials Project

    SciTech Connect (OSTI)

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  12. Materials Data on Ho3InN (SG:221) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  13. Materials Data on Al(HO)3 (SG:2) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  14. Materials Data on CoHO2 (SG:166) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  15. Materials Data on Cr2HO4 (SG:10) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2015-04-10

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  16. Materials Data on NbHO3 (SG:1) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  17. Materials Data on V(HO)2 (SG:58) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  18. Materials Data on Mg3(HO3)2 (SG:12) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  19. Materials Data on NaCoP2HO7 (SG:2) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  20. Materials Data on Na4Al3Si3HO13 (SG:161) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  1. Materials Data on Ca5P3HO13 (SG:173) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  2. Materials Data on Te(HO)6 (SG:14) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  3. Materials Data on MnHO2 (SG:14) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  4. Materials Data on TaHO3 (SG:141) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  5. (JS)_BL13 schedule S02-S03FY15HO3FINAL.xlsx

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

    16 17 18 19 20 21 22 Day Shift 6:00 3996 B Sandberg 3996 B Sandberg 3996 B Sandberg 3996 A Sandberg 3996 A Sandberg 3996 A Sandberg 3996 A Sandberg 3 0 4 Night Shift 18:00 8055 B Ogasawara 80055 B Ogasawara 8055 B Ogasawara 3996 B Sandberg 3996 B Sandberg 3996 A Sandberg 3996 A Sandberg 2 3 2 Feb 23 24 25 26 27 28 1 Day Shift 6:00 AP AP 4247 B Graves 4247 B Graves 4247 B Graves 4247 B Graves 4247 B Graves 5 0 0 Night Shift 18:00 AP AP 4180 C Li 4180 C Li 4180 C Li 4238 A Savikhin 4238 A Savikhin

  6. Materials Data on Ho10Ti6O27 (SG:8) by Materials Project

    SciTech Connect (OSTI)

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  7. Materials Data on BaHo2CuO5 (SG:62) by Materials Project

    SciTech Connect (OSTI)

    Kristin Persson

    2015-02-19

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  8. Materials Data on Ba2HoReO6 (SG:225) by Materials Project

    SciTech Connect (OSTI)

    Kristin Persson

    2015-03-24

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  9. Materials Data on P(HO)4 (SG:56) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  10. Materials Data on Ho(SiCu)2 (SG:139) by Materials Project

    SciTech Connect (OSTI)

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  11. Materials Data on HoIn5Rh (SG:123) by Materials Project

    SciTech Connect (OSTI)

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  12. Materials Data on Ho(BC)2 (SG:127) by Materials Project

    SciTech Connect (OSTI)

    Kristin Persson

    2015-03-08

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  13. Materials Data on Ho3CrB7 (SG:63) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2015-03-19

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  14. Materials Data on HoBPd3 (SG:221) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2015-02-09

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  15. Materials Data on B(HO)3 (SG:2) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  16. Materials Data on HoBRh3 (SG:221) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  17. The Ho-Ni-Ge system: Isothermal section and new rare-earth nickel...

    Office of Scientific and Technical Information (OSTI)

    ... Biology, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4M1 (Canada) Institute SPIN-CNR and Dipartimento di Chimica e Chimica Industriale, Universit di ...

  18. Materials Data on HoGaPd (SG:62) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2015-01-27

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  19. Materials Data on HoTlPd (SG:189) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2015-03-09

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  20. Materials Data on Ho2Pd2Pb (SG:127) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2015-03-19

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  1. Materials Data on HoSnPd2 (SG:225) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  2. Materials Data on Ho3(GePd)4 (SG:71) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  3. Materials Data on Ho2SO2 (SG:164) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  4. Materials Data on Ho2S3 (SG:122) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  5. Materials Data on Ho2Al3Si2 (SG:12) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  6. Materials Data on NaHoF4 (SG:141) by Materials Project

    SciTech Connect (OSTI)

    Kristin Persson

    2014-07-09

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  7. Materials Data on HoAu4 (SG:87) by Materials Project

    SciTech Connect (OSTI)

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  8. Materials Data on HoCu2 (SG:74) by Materials Project

    SciTech Connect (OSTI)

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  9. Materials Data on LaHO2 (SG:11) by Materials Project

    SciTech Connect (OSTI)

    Kristin Persson

    2014-07-09

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  10. Materials Data on P(HO)3 (SG:33) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  11. Stability of Hořava-Lifshitz black holes in the context of AdS...

    Office of Scientific and Technical Information (OSTI)

    Stability of Hoava-Lifshitz black holes in the context of AdSCFT Citation Details In-Document Search Title: Stability of Hoava-Lifshitz black holes in the context of AdSCFT ...

  12. Resistance-Based Ceramic Ho123 Ionic Conductor for Oxygen Gas...

    Office of Scientific and Technical Information (OSTI)

    The rod showed stable sensing characteristics with good electrical stability and reproducibility with higher sensitivity at low oxygen partial pressure. The sensing property is ...

  13. Materials Data on Ho2HgO4 (SG:12) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  14. Materials Data on HoHg (SG:221) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  15. Materials Data on CdP2(HO)4 (SG:15) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  16. Materials Data on KP(HO2)2 (SG:14) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  17. Materials Data on CuP2(HO)4 (SG:61) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  18. Materials Data on KP(HO2)2 (SG:43) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  19. Materials Data on NaP(HO2)2 (SG:14) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  20. Materials Data on NaZnP2HO7 (SG:2) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  1. Materials Data on Al2P3(HO3)3 (SG:176) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  2. Materials Data on KScBP2HO9 (SG:2) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  3. Materials Data on ZrP2(HO3)2 (SG:164) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  4. Materials Data on NaZn2P2HO8 (SG:2) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  5. Materials Data on KVBP2HO9 (SG:2) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  6. Materials Data on MgAl2P2(HO)18 (SG:2) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  7. Materials Data on RbScBP2HO9 (SG:2) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  8. Materials Data on CsMnP3HO10 (SG:5) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  9. Materials Data on RbGaBP2HO9 (SG:14) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  10. Materials Data on CaP2(HO2)4 (SG:2) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  11. Materials Data on RbZn2P2HO8 (SG:2) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  12. Materials Data on Sc2P3(HO3)3 (SG:176) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  13. Materials Data on SrP2(HO)4 (SG:15) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  14. Materials Data on BiP4HO12 (SG:2) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  15. Materials Data on Ga2P3(HO3)3 (SG:176) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  16. Materials Data on CaP2(HO)4 (SG:15) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  17. Materials Data on Fe2P3(HO3)3 (SG:176) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  18. Materials Data on RbP(HO)2 (SG:62) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  19. Materials Data on BaCoBP2HO9 (SG:2) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  20. Materials Data on CsGaP3HO10 (SG:5) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  1. Materials Data on MgFe2P2(HO)18 (SG:2) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  2. Materials Data on RbP(HO2)2 (SG:43) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  3. Materials Data on GaP3(HO5)2 (SG:14) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  4. Materials Data on RbMnP3HO10 (SG:15) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  5. Materials Data on MgP(HO)7 (SG:61) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  6. Materials Data on Mg3P2(HO)16 (SG:12) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  7. Materials Data on LiP(HO2)2 (SG:33) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  8. Materials Data on Ho10In20Ni9 (SG:129) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2015-03-20

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  9. Materials Data on HoInNi (SG:189) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2015-01-21

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  10. Materials Data on Ni(HO)2 (SG:164) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  11. Materials Data on Ho3(AlNi3)2 (SG:229) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2015-02-09

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  12. Materials Data on HoNiSn (SG:62) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2015-03-22

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  13. Materials Data on HoGa4Ni (SG:63) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2015-02-20

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  14. Materials Data on Ho(NiB)2 (SG:15) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  15. Materials Data on Al(HO)3 (SG:14) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  16. Materials Data on Li6Ho(BO3)3 (SG:14) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  17. Materials Data on Y(HO)3 (SG:176) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  18. Materials Data on Ho2Ge2Os (SG:12) by Materials Project

    SciTech Connect (OSTI)

    Kristin Persson

    2015-02-09

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  19. (JS)_BL13 schedule S02-S03FY15HO3FINAL.xlsx

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

    A Ogassawara 8855 A Ogassawara 3 3 0 Apr 6 7 8 9 10 11 12 Day Shift 6:00 AP AP 4281 A Cho 4281 A Cho 4281 A Cho 4281 A Cho 8073 A Ohldag 1 4 0 Night Shift 18:00 AP AP 4281 A Cho...

  20. Materials Data on Ho2SO2 (SG:164) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  1. Materials Data on Ho2Ru2O7 (SG:227) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2015-02-19

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  2. New GE Plant to Produce Thin Film PV Solar Panels Based on NREL Technology

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

    | Department of Energy GE Plant to Produce Thin Film PV Solar Panels Based on NREL Technology New GE Plant to Produce Thin Film PV Solar Panels Based on NREL Technology April 22, 2011 - 10:17am Addthis Photo courtesy of General Electric Photo courtesy of General Electric Minh Le Minh Le Deputy Director, Solar Energy Technologies Office Earlier this month, General Electric announced plans to enter the global marketplace for solar photovoltaic (PV) panels in a big way - and to do it, they will

  3. Integrated Biorefineries: Biofuels, Bioproducts, and Biopower | Department

    Energy Savers [EERE]

    | Department of Energy Solar Panel Maker Scales Up, Lowering Costs while Creating Jobs Innovative Solar Panel Maker Scales Up, Lowering Costs while Creating Jobs May 16, 2011 - 12:41pm Addthis The end of Abound Solar’s PV manufacturing line | Photo Courtesy of Abound Solar The end of Abound Solar's PV manufacturing line | Photo Courtesy of Abound Solar Minh Le Minh Le Deputy Director, Solar Energy Technologies Office It's one thing to call solar energy a "growth industry,"

  4. SunShot Grand Challenge Summit: Bright Outlook to Achieve SunShot Goal |

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

    Department of Energy Grand Challenge Summit: Bright Outlook to Achieve SunShot Goal SunShot Grand Challenge Summit: Bright Outlook to Achieve SunShot Goal May 30, 2014 - 2:15pm Addthis Watch the video above to learn more about the Energy Department's SunShot Initiative, a national collaborative effort to make solar energy cost-competitive with other forms of electricity. Minh Le Minh Le Deputy Director, Solar Energy Technologies Office Last week, hundreds of solar energy leaders gathered in

  5. Training Veterans to Work in the Rapidly Growing Solar Industry |

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

    Department of Energy Training Veterans to Work in the Rapidly Growing Solar Industry Training Veterans to Work in the Rapidly Growing Solar Industry June 26, 2015 - 12:40pm Addthis Training Veterans to Work in the Rapidly Growing Solar Industry Minh Le Minh Le Deputy Director, Solar Energy Technologies Office As the cost of solar energy continues to drop, it could become one of the cheapest electricity sources by 2030-and the solar job market will continue to flourish. In 2014, one out of

  6. Innovative Solar Panel Maker Scales Up, Lowering Costs while Creating Jobs

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

    | Department of Energy Solar Panel Maker Scales Up, Lowering Costs while Creating Jobs Innovative Solar Panel Maker Scales Up, Lowering Costs while Creating Jobs May 16, 2011 - 12:41pm Addthis The end of Abound Solar’s PV manufacturing line | Photo Courtesy of Abound Solar The end of Abound Solar's PV manufacturing line | Photo Courtesy of Abound Solar Minh Le Minh Le Deputy Director, Solar Energy Technologies Office It's one thing to call solar energy a "growth industry,"

  7. Francesca Poli | Princeton Plasma Physics Lab

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

    Energy Fourth Graders Power Their Classroom with Solar Energy Fourth Graders Power Their Classroom with Solar Energy June 23, 2013 - 7:00pm Addthis Watch as the students in Aaron Sebens' fourth grade class complete a project that goes above and beyond a normal day in school. Minh Le Minh Le Deputy Director, Solar Energy Technologies Office LEARN MORE Watch Aaron's students explain how their solar panels work. Find out the Top 6 Things You Didn't Know About Solar. A group of fourth graders in

  8. The Race to 7-Day Solar is On! | Department of Energy

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

    The Race to 7-Day Solar is On! The Race to 7-Day Solar is On! March 4, 2015 - 3:32pm Addthis Solar projects can be installed quickly, but red tape sometimes means lengthy delays. The Race to 7-Day Solar aims to change that. | Infographic by SunShot. Solar projects can be installed quickly, but red tape sometimes means lengthy delays. The Race to 7-Day Solar aims to change that. | Infographic by SunShot. Minh Le Minh Le Deputy Director, Solar Energy Technologies Office In the summer of 1969, the

  9. Fourth Graders Power Their Classroom with Solar Energy | Department of

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

    Energy Fourth Graders Power Their Classroom with Solar Energy Fourth Graders Power Their Classroom with Solar Energy June 23, 2013 - 7:00pm Addthis Watch as the students in Aaron Sebens' fourth grade class complete a project that goes above and beyond a normal day in school. Minh Le Minh Le Deputy Director, Solar Energy Technologies Office LEARN MORE Watch Aaron's students explain how their solar panels work. Find out the Top 6 Things You Didn't Know About Solar. A group of fourth graders in

  10. New White House Report Highlights Investments in the Future of Indian

    Energy Savers [EERE]

    | Department of Energy GE Plant to Produce Thin Film PV Solar Panels Based on NREL Technology New GE Plant to Produce Thin Film PV Solar Panels Based on NREL Technology April 22, 2011 - 10:17am Addthis Photo courtesy of General Electric Photo courtesy of General Electric Minh Le Minh Le Deputy Director, Solar Energy Technologies Office Earlier this month, General Electric announced plans to enter the global marketplace for solar photovoltaic (PV) panels in a big way - and to do it, they will

  11. 2014 SunShot Grand Challenge Summit Opening Session Photos | Department of

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

    Energy Opening Session Photos 2014 SunShot Grand Challenge Summit Opening Session Photos Addthis SunShot Grand Challenge Summit Opening Session 1 of 35 SunShot Grand Challenge Summit Opening Session Anaheim Mayor Tom Tait with SunShot Director Minh Le Credit: SunShot Initiative Date taken: 2014-05-19 16:01 SunShot Grand Challenge Summit Opening Session 2 of 35 SunShot Grand Challenge Summit Opening Session SunShot Director Minh Le Credit: SunShot Initiative Date taken: 2014-05-19 16:06

  12. The Rise and Fall of Core-Collapse Supernovae

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

    The Race to 7-Day Solar is On! The Race to 7-Day Solar is On! March 4, 2015 - 3:32pm Addthis Solar projects can be installed quickly, but red tape sometimes means lengthy delays. The Race to 7-Day Solar aims to change that. | Infographic by SunShot. Solar projects can be installed quickly, but red tape sometimes means lengthy delays. The Race to 7-Day Solar aims to change that. | Infographic by SunShot. Minh Le Minh Le Deputy Director, Solar Energy Technologies Office In the summer of 1969, the

  13. 1 in 78 New Jobs in America is a Solar Job | Department of Energy

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

    1 in 78 New Jobs in America is a Solar Job 1 in 78 New Jobs in America is a Solar Job January 15, 2015 - 1:07pm Addthis Watch the video above to find out how the Sunshot Initiative is powering America's solar industry workforce through the Solar Instructor Training Network. A new report by The Solar Foundation shows the solar industry is adding workers at a rate nearly 20 times faster than the overall economy. Minh Le Minh Le Deputy Director, Solar Energy Technologies Office Today marks an

  14. 3-16-12-signed-BAC-Final-EA-FONSI.pdf

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

    Climate Goals | Department of Energy 3 Ways Solar Energy Programs Are Helping Achieve President Obama's Climate Goals 3 Ways Solar Energy Programs Are Helping Achieve President Obama's Climate Goals September 8, 2015 - 12:36pm Addthis Minh Le Minh Le Deputy Director, Solar Energy Technologies Office Since President Obama took office in 2009, U.S. solar energy capacity has grown more than twenty-fold. And solar stands to grow even more -- with renewable energy capacity in the U.S. slated to

  15. SunShot Initiative 2014 Portfolio Overview

    Broader source: Energy.gov [DOE]

    These slides correspond to a presentation given by SunShot Initiative Director Minh Le at the 2014 SunShot Grand Challenge Summit and Peer Review in Anaheim, CA. This presentation is an overview of the SunShot Initiative's research portfolio.

  16. Leadership

    Broader source: Energy.gov [DOE]

    Minh Le is the Director of the Solar Energy Technologies Office within the U.S. Department of Energy (DOE), where he helps to manage and balance a roughly $1B multi-year portfolio of research, development, demonstration, and deployment programs to achieve the goals of the SunShot Initiative.

  17. Materials Data on CaAl4Si2(HO6)2 (SG:9) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  18. Materials Data on SrAl3P2(HO2)7 (SG:160) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  19. Thin films of the spin ice compound Ho{sub 2}Ti{sub 2}O{sub 7...

    Office of Scientific and Technical Information (OSTI)

    resulting from the interplay between geometrical frustration and ferromagnetic coupling. ... H. 2 ; Institute of Mechanics, Materials and Civil Engineering, Universit ...

  20. Magnetic structures of R5Ni2In4 and R11Ni4In9 ( R = Tb and Ho...

    Office of Scientific and Technical Information (OSTI)

    As a result of the intra- and inter-magnetic sublattice interactions, the magnetic ... Country of Publication: United States Language: English Word Cloud More Like This Free ...

  1. Materials Data on NaMn3P3(HO6)2 (SG:15) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  2. Materials Data on Co3AgP3(HO6)2 (SG:15) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  3. Materials Data on Ho4In(NiGe2)2 (SG:12) by Materials Project

    SciTech Connect (OSTI)

    Kristin Persson

    2014-11-02

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  4. High Level Computational Chemistry Approaches to the Prediction of Energetic Properties of Chemical Hydrogen Storage Systems

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

    Level Computational Chemistry Approaches to the Prediction of the Energetic Properties of Chemical Hydrogen Storage Systems David A. Dixon Chemistry, University of Alabama, Tuscaloosa, AL Cast: Myrna Hernandez-Matus, Daniel Grant, Jackson Switzer, Jacob Batson, Ronita Folkes, Minh Nguyen Anthony J. Arduengo & co-workers Maciej Gutowski (PNNL) Robert Ramsay Chair Fund Shelby Hall Funding provided in part by the Department of Energy, Office of Energy Efficiency and Renewable Energy under the

  5. Charmonium studies with the crystal ball

    SciTech Connect (OSTI)

    Oreglia, M.

    1980-06-01

    The Crystal Ball detector at SPEAR is used to analyze the decays psi' ..-->.. ..gamma gamma..psi and psi' ..-->.. ..gamma..chi,chi ..-->.. ..gamma gamma... Values are obtained for the branching ratios of psi' ..-->.. eta/..mu../sup 0/psi and psi' ..-->.. ..gamma..chi,chi ..-->.. ..gamma..psi. No evidence is found for a 2/sup 1/S/sub 0/(eta'c) state in the mass range 3129 ..-->.. 3644 MeV/c/sup 2/. Analysis of the angular distributions in the cascade chi decays yields spin and multipole assignments for the chi(3.51) and chi(3.55).

  6. The H2O2+OH ? HO2+H2O reaction in aqueous solution from a charge-dependent continuum model of solvation

    SciTech Connect (OSTI)

    Ginovska, Bojana; Camaioni, Donald M.; Dupuis, Michel

    2008-07-07

    We applied our recently developed protocol of the conductor-like continuum model of solvation to describe the title reaction in aqueous solution. The model has the unique feature of the molecular cavity being dependent on the atomic charges in the solute, and can be extended naturally to transition states and reaction pathways. It was used to calculate the reaction energetics and reaction rate in solution for the title reaction. The rate of reaction calculated using canonical variational transition state theory CVT in the context of the equilibrium solvation path (ESP) approximation, and including correction for tunneling through the small curvature approximation (SCT) was found to be 3.6 106 M-1 s-1, in very good agreement with experiment, These results suggest that the present protocol of the conductor-like continuum model of solvation with the charge-dependent cavity definition captures accurately the solvation effects at transition states and allows for quantitative estimates of reaction rates in solutions. This work was supported by the U.S. Department of Energy's (DOE) Office of Basic Energy Sciences, Chemical Sciences program. The Pacific Northwest National Laboratory is operated by Battelle for DOE.

  7. Anisotropic superconducting and normal state magnetic properties of single crystals of RNi*2*B*2*C compounds (R = Y, Gd, Dy, Ho, Er, and Tm)

    SciTech Connect (OSTI)

    Cho, B.

    1995-11-01

    The interaction of superconductivity with magnetism has been one of the most interesting and important phenomena in solid state physics since the 1950`s when small amounts of magnetic impurities were incorporated in superconductors. The discovery of the magnetic superconductors RNi{sub 2}B{sub 2}C (R = rare earth, Y) offers a new system to study this interaction. The wide ranges of superconducting transition (T{sub c}) and antiferromagnetic (AF) ordering temperatures (T{sub N}) (0 K {le} T{sub c} {le} 16 K, 0 K {le} T{sub N} {le} 20 K) give a good opportunity to observe a variety of interesting phenomena. Single crystals of high quality with appropriate size and mass are crucial in examining the anisotropic intrinsic properties. Single crystals have been grown successfully by an unusual high temperature flux method and characterized thoroughly by X-ray, electrical transport, magnetization, neutron scattering, scanning electron microscopy, and other measurements.

  8. This Week In Petroleum Summary Printer-Friendly Version

    Annual Energy Outlook [U.S. Energy Information Administration (EIA)]

    in U.S. light crude production, have changed the market equation. The reversal of Shell Oil's Houma to Houston (Ho-Ho) pipeline, which traditionally shipped offshore crude...

  9. Microsoft PowerPoint - Thomas Shaw.DOE rev3.pptx

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

    Marine Terminal Offshore Production HoHo Pipeline Linking World Energy Producers ..... 3 ... LOOP remains a critical piece of the US crude oil infrastructure, able to adapt to market ...

  10. Thomas L. Shaw, President LOOP LLC Before Public Meeting on the...

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

    ... key conduit between Gulf of Mexico producers and domestic refiners. Finally, LOOP also receives domestic crude oil from Texas at its Marine Terminal and through the Ho-Ho pipeline. ...

  11. Search for: All records | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    ... Acker, Michael G. (1) Blacklow, Stephen C. (1) Chan, Ho Man (1) Chopra, Rajiv (1) Clark, ... ; Fan, Lixin ; Stams, Travis ; Chan, Ho Man ; LaMarche, Matthew J. ; Chopra, Rajiv ; ...

  12. Sandia Engineer at Heliostat Field

    Broader source: Energy.gov [DOE]

    This photograph features Clifford Ho, an engineer at Sandia National Laboratories, who stands below Sandia's solar heliostat field. The Chinese Institute of Engineers-USA selected Ho as its Asian...

  13. Search for: All records | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    Chan, Ho Man" Name Name ORCID Search Authors Type: All BookMonograph ConferenceEvent ... Results Page 1 of 1 Search for: All records CreatorsAuthors contains: "Chan, Ho Man

  14. Euro Solar Parks Inc | Open Energy Information

    Open Energy Info (EERE)

    Parks Inc Jump to: navigation, search Name: Euro Solar Parks Inc Place: Ho-ho-Kus, New Jersey Zip: 7423 Sector: Solar Product: New Jersey-based solar developer focused on...

  15. Engineer, Sandia National Laboratories | National Nuclear Security

    National Nuclear Security Administration (NNSA)

    Administration | (NNSA) Engineer, Sandia National Laboratories Clifford Ho Clifford Ho February 2010 Asian American Engineer of the Year Clifford Ho, a Sandia engineer, has been selected by the Chinese Institute of Engineers - USA to receive the Asian American Engineer of the Year Award. The honor is presented each year to the nation's most outstanding Asian American engineers and scientists who make significant, lasting and global contributions to the nation. Ho was recognized for his

  16. Engineered Biosynthesis of Alternative Biodiesel Fuel - Energy Innovation

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

    Administration | (NNSA) Engineer, Sandia National Laboratories Clifford Ho Clifford Ho February 2010 Asian American Engineer of the Year Clifford Ho, a Sandia engineer, has been selected by the Chinese Institute of Engineers - USA to receive the Asian American Engineer of the Year Award. The honor is presented each year to the nation's most outstanding Asian American engineers and scientists who make significant, lasting and global contributions to the nation. Ho was recognized for his

  17. Silencing heme oxygenase-1 gene expression in retinal pigment epithelial cells inhibits proliferation, migration and tube formation of cocultured endothelial cells

    SciTech Connect (OSTI)

    Zhang, Wenjie; Zhang, Xiaomei; Lu, Hong; Matsukura, Makoto; Zhao, Jien; Shinohara, Makoto

    2013-05-10

    Highlights: •HO-1 is highly induced in RPE cells by hypoxia. •Inhibition of HO-1 activity and knockdown of HO-1 expression inhibit VEGF expression in RPE cells under hypoxia. •Knockdown of HO-1 in RPE cells inhibits angiogenesis of endothelial cells in vitro. -- Abstract: Heme oxygenase-1 (HO-1) plays an important role in the vasculature and in the angiogenesis of tumors, wounds and other environments. Retinal pigment epithelial (RPE) cells and choroidal endothelial cells (CECs) are the main cells involved in choroidal neovascularization (CNV), a process in which hypoxia plays an important role. Our aim was to evaluate the role of human RPE-cell HO-1 in the angiogenic activities of cocultured endothelial cells under hypoxia. Small interfering RNA (siRNA) for HO-1 was transfected into human RPE cell line ARPE-19, and zinc protoporphyrin (ZnPP) was used to inhibit HO-1 activity. Knockdown of HO-1 expression and inhibition of HO-1 activity resulted in potent reduction of the expression of vascular endothelial growth factor (VEGF) under hypoxia. Furthermore, knockdown of HO-1 suppressed the proliferation, migration and tube formation of cocultured endothelial cells. These findings indicated that HO-1 might have an angiogenic effect in CNV through modulation of VEGF expression and might be a potential target for treating CNV.

  18. UNITED STATES OF AMERICA DEPARTMENT OF ENERGY OFFICE OF FOSSIL...

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

    a wholly owned subsidiary of Crowley Holdings, Inc. (CHI). Carib states that CHI is a family- and employee-owned company. 6 B. Procedural History Carib filed the Application on...

  19. Search for: All records | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    ... Filter by Author Chen, Zhucheng (3) Henry, Lisa (2) Pak, Chi W. (2) Bogdan, Sven (1) ... Chi W. ; Liao, Yuxing ; Shi, Shuoyong ; Henry, Lisa ; Grishin, Nick V. ; Bogdan, Sven ; ...

  20. Light-Material Interactions in Energy Conversion - Energy Frontier Research

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

    Center (LMI-EFRC) Workshop Agenda 7:30-8:30am On-Site Registration and Check-In Cahill Lobby 8:30-9:00am Welcome and Introduction Harry Atwater, California Institute of Technology Hameetman Auditorium 9:00-9:40am The DOE SunShot Initiative: Revitalizing American Competitiveness in Solar Energy Minh Le, U.S. Department of Energy Hameetman Auditorium 9:40-10:20am Advancing Efficiency and Scale in Concentrating Photovoltaics Geoffrey Kinsey, Fraunhofer CSE Hameetman Auditorium 10:20-10:40am

  1. Energy Department Awards $92 Million for Genomics Research | U.S. DOE

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

    Department of Energy Energy Department Announces New Prize Challenge to Drive Down Solar Costs Energy Department Announces New Prize Challenge to Drive Down Solar Costs May 20, 2014 - 12:07pm Addthis SunShot Grand Challenge Summit Opening Session 1 of 35 SunShot Grand Challenge Summit Opening Session Anaheim Mayor Tom Tait with SunShot Director Minh Le Credit: SunShot Initiative Date taken: 2014-05-19 16:01 SunShot Grand Challenge Summit Opening Session 2 of 35 SunShot Grand Challenge Summit

  2. PowerPoint Presentation

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

    The Solar Energy Technologies Office Getting to Ubiquitous Solar Minh Le, Director Solar Energy Technologies Office energy.gov/sunshot energy.gov/sunshot SunShot Initiative SunShot Initiative 5 - 6¢/kwh without subsidy A 75% cost reduction by the end of the decade Price SunShot energy.gov/sunshot energy.gov/sunshot The Right Stuff * Half of the Federal Workforce * 10 times the number of PhDs/MBAs (some with decades of industrial experience) * FOAs awarded in half the time * Working with

  3. 2014 SunShot Initiative Portfolio Book: Introduction | Department of Energy

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

    2014 SunShot Initiative Portfolio Book: Introduction 2014 SunShot Initiative Portfolio Book: Introduction The 2014 SunShot Initiative Portfolio Book outlines the progress towards the goals outlined in the SunShot Vision Study. Contents include overviews of each of SunShot's five subprogram areas, as well as a description of every active project in the SunShot's project portfolio as of May 2014. This section includes a letter from Director Minh Le, as well as an introduction section offering an

  4. January 31, 2012 Agenda

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

    Board Meeting Agenda Department of Energy Room 1E-245 1000 Independence Avenue, SW Washington, DC 20585 January 31, 2012 8:30 AM-8:45 AM Welcome, Overview, Announcement of New Co-Chair Chairman William Perry 8:45 AM-9:45 AM Grand Challenges in Energy Secretary Steven Chu 9:45 AM-10:15 AM Renewable Energy and Energy Efficiency Finance Richard Kauffman 10:15 AM-11:00 AM SunShot Tech Team Ramamoorthy Ramesh, Minh Le, Rachel Tronstein 11:00 AM-11:30 AM Batteries Tech Team Dave Howell, Dave Danielson

  5. Sofalcone, a gastric mucosa protective agent, increases vascular endothelial growth factor via the Nrf2-heme-oxygenase-1 dependent pathway in gastric epithelial cells

    SciTech Connect (OSTI)

    Shibuya, Akiko; Onda, Kenji; Kawahara, Hirofumi; Uchiyama, Yuka; Nakayama, Hiroko; Omi, Takamasa; Nagaoka, Masayoshi; Matsui, Hirofumi; Hirano, Toshihiko

    2010-07-30

    Research highlights: {yields} Sofalcone increases HO-1 in gastric epithelial cells. {yields} The induction of HO-1 by sofalcone treatment follows the activation of Nrf2. {yields} The production of VEGF by sofalcone treatment is mediated by HO-1 induction. -- Abstract: Sofalcone, 2'-carboxymethoxy-4,4-bis(3-methyl-2-butenyloxy)chalcone, is an anti-ulcer agent that is classified as a gastric mucosa protective agent. Recent studies indicate heat shock proteins such as HSP32, also known as heme-oxygenase-1(HO-1), play important roles in protecting gastrointestinal tissues from several stresses. We have previously reported that sofalcone increases the expression of HO-1 in adipocytes and pre-adipocytes, although the effect of sofalcone on HO-1 induction in gastrointestinal tissues is not clear. In the current study, we investigated the effects of sofalcone on the expression of HO-1 and its functional role in rat gastric epithelial (RGM-1) cells. We found that sofalcone increased HO-1 expression in RGM-1 cells in both time- and concentration-dependent manners. The HO-1 induction was associated with the nuclear translocation of nuclear factor (erythroid-derived 2)-like 2 (Nrf2) in RGM-1 cells. We also observed that sofalcone increased vascular endothelial growth factor (VEGF) production in the culture medium. Treatment of RGM-1 cells with an HO-1 inhibitor (tin-protoporphyrin), or HO-1 siRNA inhibited sofalcone-induced VEGF production, suggesting that the effect of sofalcone on VEGF expression is mediated by the HO-1 pathway. These results suggest that the gastroprotective effects of sofalcone are partly exerted via Nrf2-HO-1 activation followed by VEGF production.

  6. Neutralino annihilation to qqg

    SciTech Connect (OSTI)

    Barger, Vernon; Shaughnessy, Gabe; Keung, W.-Y.; Logan, Heather E.

    2006-10-01

    We compute the cross section for {chi}{chi}{yields}qqg at order {alpha}{sub s}{sup 2}/M{sub q-}t{sub ilde}{sup 6} arising from interference between the tree-level and loop-induced processes. This interference term is the same order in {alpha}{sub s} as {chi}{chi}{yields}gg; for mass degenerate squarks M{sub q-tildeR}=M{sub q-}t{sub ildeL}=M{sub q-tilde} we find v{sub rel}{sigma}{sub int}=[-2m{sub {chi}}{sup 2}/3M{sub q-tilde}{sup 2}]v{sub rel}{sigma}({chi}{chi}= {yields}gg)

  7. Search for: All records | SciTech Connect

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    ... Daligault, Jerome Olivier (1) Friedrichsen, Paul (1) Garrett, Kerry (1) Gill, Nathanael Matthew (1) Harrison, Alan Kent (1) Heinonen, Robin Alrik (1) Ho, Andrew (1) Holgado, Aaron ...

  8. Pharmacologic Profile of the Adnectin BMS-962476, a Small Protein...

    Office of Scientific and Technical Information (OSTI)

    Daniel ; Low, Simon ; Russo, Katie ; DiBella, Rose ; Denhez, Fabienne ; Gao, Mian ; Myers, Joseph ; Duke, Gerald ; Witmer, Mark ; Miao, Bowman ; Ho, Siew P. ; Khan, Javed ; ...

  9. Powercom Co Ltd | Open Energy Information

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    Powercom Co Ltd Place: Chung Ho, Taipei, Taiwan Product: Manufacturers of Uninterruptible Power Supplies (UPS) and PV cells and modules. References: Powercom Co Ltd1 This article...

  10. ST. LCUIS ST. LallS JOKIN KFms Clrv S!. LrMS ST. Lcm

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    Ho. 30 !2121/87 smt6w cm ST. LCUIS ST. LallS JOKIN KFms Clrv S!. LrMS ST. Lcm

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    ... (IE) (United States) USDOE Office of Intelligence and Counterintelligence (IN) (United ... Frequency domain quantum optimal control under multiple constraints Shu, Chuan-Cun ; Ho, ...

  12. Spencer Chetnical Ccmpny

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    to unrestricted areas. " with: respect to air- borne radioactivity. . . ..i .' .' 2. ... 1960.. .:,: : . . . . .. .-Lc*. .Bxhawt. air fr&,'& ho&in- R&n 16 of. .) -Buildiof,702 ...

  13. PowerPoint Presentation

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    Nuclear Security Administration under contract DE-AC04-94AL85000. Looking Forward: Solar Market 2040 Energy Needs and Technologies Clifford K. Ho Sandia National...

  14. Controlling the Polarization of Light with Bilayer Subwavelength...

    Office of Scientific and Technical Information (OSTI)

    Title: Controlling the Polarization of Light with Bilayer Subwavelength Metallic Apertures Authors: Chan, Ho Bun 1 ; Marset, zsolt 2 ; Carr, D. W. 3 ; Bower, J. E. 4 ; ...

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    ... Michelle ; Xu, Xiang ; Durzynska, Izabela ; Fan, Lixin ; Stams, Travis ; Chan, Ho Man ; LaMarche, Matthew J. ; Chopra, Rajiv ; Wang, Ping ; et al April 2016 Structure of ...

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    ... carbonates from quantum chemistry Kent, Paul R. C. ; Ganesh, Panchapakesan ; Borodin, ... ; Qiao, Liang ; Ganesh, Panchapakesan ; Meyer, Tricia L. ; Lee, Ho Nyung ; Biegalski, ...

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    Crystallization and preliminary X-ray crystallographic studies of Drep-3, a DFF-related protein from Drosophila melanogaster Park, Hyun Ho ; Tookes, Hansel Emory ; Wua, Hao October ...

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    ... Crystallization and preliminary X-ray crystallographic studies of Drep-3, a DFF-related protein from Drosophila melanogaster Park, Hyun Ho ; Tookes, Hansel Emory ; Wua, Hao October ...

  19. News Item

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    7, 2015 Time: 11:00 am Speaker: Wilson Ho, UCI Title: Molecular FoundryALS Joint Seminar: Imaging Bonds and Chemical Interactions Location: Building 66 Auditorium Abstract: ...

  20. Bioaccumulation of hydroxylated polychlorinated biphenyls and pentachlorophenol in the serum of northern elephant seal pups (Mirounga angustirostris)

    SciTech Connect (OSTI)

    Louis, Caroline; Stas, Marie; Malarvannan, Govindan; Dirtu, Alin C.; Debier, Cathy

    2015-01-15

    Northern elephant seals (NES) (Mirounga angustirostris) from the Año Nuevo State Reserve (CA, USA) were sampled at 1-, 4-, 7- and 10-week post-weaning. Concentrations of hydroxylated polychlorinated biphenyls (HO-PCBs) and their parent PCBs were measured in the serum of each individual. The ΣHO-PCB concentrations in the serum increased significantly between early and late fast (from 282±20 to 529±31 pg/mL). This increase might result from a mobilisation of HO-PCBs transferred from the mother during gestation and/or lactation and stored in the pup's liver. Food deprivation has been shown to exacerbate biotransformation capacities in mammals, birds and fish. The HO-penta-CBs was the predominant homologue group, followed by HO-hexa-CBs and HO-hepta-CBs. No preferential pathway for the metabolism of HO-PCBs (HO-direct insertion or NIH-shift of a chlorine atom) could be evidenced. The concentrations of pentachlorophenol (PCP) in the serum of weaned NES increased from 103±7 pg/mL at early fast to 246±41 pg/mL at late fast, which is within the range of PCP concentrations usually encountered in marine mammals. - Highlights: • Σ HO-PCB concentrations in serum significantly increased between early and late fast. • The HO-penta-CBs were the predominant homologue group measured in serum. • No preferential pathway for the metabolism of HO-PCBs could be evidenced. • PCP concentrations in serum significantly increased between early and late fast.

  1. Comparison of the extended linear {sigma} model and chiral perturbation theory

    SciTech Connect (OSTI)

    Alvarez, W.P.; Kubodera, K.; Myhrer, F.

    2005-09-01

    The pion-nucleon-scattering amplitudes are calculated in tree approximation with the use of the extended linear sigma model (ELSM) as well as heavy-baryon chiral perturbation theory (HB{chi}PT), and the nonrelativistic forms of the ELSM results are compared with those of HB{chi}PT. We find that the amplitudes obtained in ELSM do not agree with those derived from the more fundamental effective approach, HB{chi}PT.

  2. Search for: All records | DOE PAGES

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    Filter Results Filter by Author Abernathy, Douglas L. (1) Arroyave, Raymundo (1) Bruno, ... Raymundo ; Singh, Navdeep ; Abernathy, Douglas L. ; Chi, Songxue Magnetocaloric (MC) ...

  3. Pressure, stress, and strain distribution in the double-stage...

    Office of Scientific and Technical Information (OSTI)

    Clemens ; Konopkova, Zuzana ; Liermannm , Hanns-Peter ; Crispin, Katherine L. ; Zhang, Chi ; Goncharov, Alexander F. 1 ; UST - China) 2 ; CIW) 2 ; UC) 2 ; Chinese Aca. ...

  4. Enel Green Power North America | Open Energy Information

    Open Energy Info (EERE)

    North America Jump to: navigation, search Name: Enel North America (formerly CHI Energy Inc) Place: Andover, Massachusetts Zip: 18100 Sector: Biomass, Geothermal energy, Wind...

  5. Commission to Review the Effectiveness of the National Energy...

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    and Jared Cohon 9:05 - 10:00 AM Laboratory Directors (Download Presentations) Chi-Chang Kao, SLAC National Accelerator Laboratory Paul Alivisatos, Lawrence Berkeley National ...

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    ... Array of titanium dioxide nanostructures for solar energy utilization Qiu, Xiaofeng ; Parans Paranthaman, Mariappan ; Chi, Miaofang ; Ivanov, Ilia N ; Zhang, Zhenyu An array of ...

  7. SSRL HEADLINES March 2012

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    Structural Molecular Biology at SSRL Chi-Chang Kao The goal of understanding biological ... Within this context, the SSRL Structural Molecular Biology (SMB) program is focused on ...

  8. Search for: All records | DOE PAGES

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    ; Abernathy, Douglas L. ; Chi, Songxue Magnetocaloric (MC) materials present an avenue for chemical-free, solid state refrigeration through cooling via adiabatic demagnetization. ...

  9. Slide 1

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    2 -glycolal O O H C Glycolaldehyde: Glyceraldehyde: Glucose: R H R CH 2 OH R C 4 H 9 O 4 -oxo- 2 -glyceral O O H C HO -oxo- 2 -glucose O O H C OH HO OH OH (d)...

  10. Heme oxygenase-1 protects endothelial cells from the toxicity of air pollutant chemicals

    SciTech Connect (OSTI)

    Lawal, Akeem O.; Zhang, Min; Dittmar, Michael; Lulla, Aaron; Araujo, Jesus A.

    2015-05-01

    Diesel exhaust particles (DEPs) are a major component of diesel emissions, responsible for a large portion of their toxicity. In this study, we examined the toxic effects of DEPs on endothelial cells and the role of DEP-induced heme oxygenase-1 (HO-1) expression. Human microvascular endothelial cells (HMECs) were treated with an organic extract of DEPs from an automobile engine (A-DEP) or a forklift engine (F-DEP) for 1 and 4 h. ROS generation, cell viability, lactate dehydrogenase leakage, expression of HO-1, inflammatory genes, cell adhesion molecules and unfolded protein respone (UPR) gene were assessed. HO-1 expression and/or activity were inhibited by siRNA or tin protoporphyrin (Sn PPIX) and enhanced by an expression plasmid or cobalt protoporphyrin (CoPPIX). Exposure to 25 μg/ml of A-DEP and F-DEP significantly induced ROS production, cellular toxicity and greater levels of inflammatory and cellular adhesion molecules but to a different degree. Inhibition of HO-1 enzymatic activity with SnPPIX and silencing of the HO-1 gene by siRNA enhanced DEP-induced ROS production, further decreased cell viability and increased expression of inflammatory and cell adhesion molecules. On the other hand, overexpression of the HO-1 gene by a pcDNA 3.1D/V5-HO-1 plasmid significantly mitigated ROS production, increased cell survival and decreased the expression of inflammatory genes. HO-1 expression protected HMECs from DEP-induced prooxidative and proinflammatory effects. Modulation of HO-1 expression could potentially serve as a therapeutic target in an attempt to inhibit the cardiovascular effects of ambient PM. - Highlights: • We examined the role of HO-1 expression on diesel exhaust particle (DEP) in endothelial cells. • DEPs exert cytotoxic and inflammatory effects on human microvascular endothelial cells (HMECs). • DEPs induce HO-1 expression in HMECs. • HO-1 protects against the oxidative stress induced by DEps. • HO-1 attenuates the proinflammatory effects

  11. Spectroscopic studies reveal that the heme regulatory motifs of heme oxygenase-2 are dynamically disordered and exhibit redox-dependent interaction with heme

    SciTech Connect (OSTI)

    Bagai, Ireena; Sarangi, Ritimukta; Fleischhacker, Angela S.; Sharma, Ajay; Hoffman, Brian M.; Zuiderweg, Erik R. P.; Ragsdale, Stephen W.

    2015-05-05

    Heme oxygenase (HO) catalyzes a key step in heme homeostasis: the O₂₋ and NADPH-cytochrome P450 reductase-dependent conversion of heme to biliverdin, Fe, and CO through a process in which the heme participates both as a prosthetic group and as a substrate. Mammals contain two isoforms of this enzyme, HO2 and HO1, which share the same α-helical fold forming the catalytic core and heme binding site, as well as a membrane spanning helix at their C-termini. However, unlike HO1, HO2 has an additional 30-residue N-terminus as well as two cysteine-proline sequences near the C-terminus that reside in heme regulatory motifs (HRMs). While the role of the additional N-terminal residues of HO2 is not yet understood, the HRMs have been proposed to reversibly form a thiol/disulfide redox switch that modulates the affinity of HO2 for ferric heme as a function of cellular redox poise. To further define the roles of the N- and C-terminal regions unique to HO2, we used multiple spectroscopic techniques to characterize these regions of the human HO2. Nuclear magnetic resonance spectroscopic experiments with HO2 demonstrate that, when the HRMs are in the oxidized state (HO2O), both the extra N-terminal and the C-terminal HRM-containing regions are disordered. However, protein NMR experiments illustrate that, under reducing conditions, the C-terminal region gains some structure as the Cys residues in the HRMs undergo reduction (HO2R) and, in experiments employing a diamagnetic protoporphyrin, suggest a redox-dependent interaction between the core and the HRM domains. Further, electron nuclear double resonance and X-ray absorption spectroscopic studies demonstrate that, upon reduction of the HRMs to the sulfhydryl form, a cysteine residue from the HRM region ligates to a ferric heme. Taken together with EPR measurements, which show the appearance of a new low-spin heme signal in reduced HO2, it appears that a cysteine residue(s) in the HRMs directly interacts

  12. Spectroscopic studies reveal that the heme regulatory motifs of heme oxygenase-2 are dynamically disordered and exhibit redox-dependent interaction with heme

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

    Bagai, Ireena; Sarangi, Ritimukta; Fleischhacker, Angela S.; Sharma, Ajay; Hoffman, Brian M.; Zuiderweg, Erik R. P.; Ragsdale, Stephen W.

    2015-05-05

    Heme oxygenase (HO) catalyzes a key step in heme homeostasis: the O₂₋ and NADPH-cytochrome P450 reductase-dependent conversion of heme to biliverdin, Fe, and CO through a process in which the heme participates both as a prosthetic group and as a substrate. Mammals contain two isoforms of this enzyme, HO2 and HO1, which share the same α-helical fold forming the catalytic core and heme binding site, as well as a membrane spanning helix at their C-termini. However, unlike HO1, HO2 has an additional 30-residue N-terminus as well as two cysteine-proline sequences near the C-terminus that reside in heme regulatory motifs (HRMs).more » While the role of the additional N-terminal residues of HO2 is not yet understood, the HRMs have been proposed to reversibly form a thiol/disulfide redox switch that modulates the affinity of HO2 for ferric heme as a function of cellular redox poise. To further define the roles of the N- and C-terminal regions unique to HO2, we used multiple spectroscopic techniques to characterize these regions of the human HO2. Nuclear magnetic resonance spectroscopic experiments with HO2 demonstrate that, when the HRMs are in the oxidized state (HO2O), both the extra N-terminal and the C-terminal HRM-containing regions are disordered. However, protein NMR experiments illustrate that, under reducing conditions, the C-terminal region gains some structure as the Cys residues in the HRMs undergo reduction (HO2R) and, in experiments employing a diamagnetic protoporphyrin, suggest a redox-dependent interaction between the core and the HRM domains. Further, electron nuclear double resonance and X-ray absorption spectroscopic studies demonstrate that, upon reduction of the HRMs to the sulfhydryl form, a cysteine residue from the HRM region ligates to a ferric heme. Taken together with EPR measurements, which show the appearance of a new low-spin heme signal in reduced HO2, it appears that a cysteine residue(s) in the HRMs directly interacts with a second

  13. Precision measurements of charmonium states formed in {anti p}p annihilation

    SciTech Connect (OSTI)

    Armstrong, T.A.; Bettoni, D. |; Bharadwaj, V.

    1991-08-01

    Fermilab experiment E-760 studies the resonant formation of Charmonium states in proton-antiproton interactions using a hydrogen gas-jet target in the antiproton Accumulator ring at Fermilab. Precision measurements of the mass and width of the Charmonium states, {chi}{sub 1}, {chi}{sub 2} and a new measurement of the {psi} mass are presented.

  14. SSRL HEADLINES August 2010

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    2 August, 2010 ____________________________________________________________________________ Contents of this Issue: Prof. Chi-Chang Kao Named Associate Laboratory Director for SSRL Science Highlight - Unusual Structure Found for an Organic Semiconductor Science Highlight - Topological Insulators Take Two Steps Forward New Solar Energy Conversion Process Discovered by Stanford/SLAC Engineers Could Revamp Solar Power Production SSRL Thanks Piero Pianetta, Welcomes Chi-Chang Kao Energy Secretary

  15. Heme oxygenase-1 induction alters chemokine regulation and ameliorates human immunodeficiency virus-type-1 infection in lipopolysaccharide-stimulated macrophages

    SciTech Connect (OSTI)

    Zhou, Zhao-Hua; Kumari, Namita; Nekhai, Sergei; Clouse, Kathleen A.; Wahl, Larry M.; Yamada, Kenneth M.; Dhawan, Subhash

    2013-06-07

    Highlights: Lipopolysaccharide stimulation of heme oxygenase-1 (HO-1) ameliorated HIV-1 infection of primary human macrophages. The partial protection by HO-1 against HIV infection was associated with induction of chemokines such as MIP1? and MIP1?. This mechanism explains lipopolysaccharide-stimulated HO-1-mediated inhibition of HIV-1 infection of macrophages. -- Abstract: We have elucidated a putative mechanism for the host resistance against HIV-1 infection of primary human monocyte-derived macrophages (MDM) stimulated with lipopolysaccharide (LPS). We show that LPS-activated MDM both inhibited HIV-1 entry into the cells and were refractory to post-entry productive viral replication. LPS-treated cells were virtually negative for mature virions as revealed by transmission electron microscopy. LPS activation of MDM markedly enhanced the expression of heme oxygenase-1 (HO-1), a potent inducible cytoprotective enzyme. Increased HO-1 expression was accompanied by elevated production of macrophage inflammatory chemokines (MIP1? and MIP1?) by LPS-activated MDM, significantly decreased surface chemokine receptor-5 (CCR-5) expression, and substantially reduced virus replication. Treatment of cells with HO-1 inhibitor SnPP IX (tin protoporphyrin IX) attenuated the LPS-mediated responses, HIV-1 replication and secretion of MIP1?, MIP1?, and LD78? chemokines with little change in surface CCR-5 expression. These results identify a novel role for HO-1 in the modulation of host immune response against HIV infection of MDM.

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    ... Jung, Jin-Ho (1) Kouris, Demitris A. (1) Lee, Chang Jun (1) Lu, Xun (1) Mi Changwen (1) ... x-rays Nguyen, Thanhhai ; Lu, Xun ; Lee, Chang Jun ; Jeon, Insu, E-mail: ...

  17. Summary of Decisions - July 23 - July 27, 2012 | Department of...

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    to the DOE or from hispast failures to obey the law. OHA Case No. PSH-12-0050 (Kent S. Woods, H.O.) Application for Exception On July 27, 2012, OHA issued a decision...

  18. Effects of pressure and distortion on superconductivity in Tl...

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    2CaCusubscript 2Osubscript 8+delta Authors: Zhang, Jian-Bo ; Struzhkin, Viktor V ; Yang, Wenge ; Mao, Ho-Kwang ; Lin, Hai-Qing ; Ma, Yong-Chang ; Wang, Nan-Lin ; Chen,...

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    Filter by Author An, Jeong Ho, E-mail: jhahn1us@skku.edu (1) Gao, Haiyan (1) Kim, Yu Jun (1) Ramasamy, Mohankandhasamy (1) Yi, Dong Kee, E-mail: vitalis@mju.ac.kr (1) Save Results ...

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    Grbel, Gerhard (1) Guo, Hongyu (1) Hernndez, Rebeca (1) Hernndez, Rebeca, E-mail: rhernandez@ictp.csic.es, E-mail: aurora.nogales@csic.es (1) Hwang, Ho-Ling (1) Ishikawa, ...

  1. Summary of Decisions - January 28, 2013 - February 1, 2013 |...

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    that he needed to continue in aftercare until March 2013. OHA Case No. PSH-12-0126 (Wade M. Boswell, H.O.) Addthis Related Articles Summary of Decisions - November 12, 2012 -...

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    Filter by Author Zhang, Rui (39) Smith, Richard D. (7) Zhang Rui (7) Chen, Xiao-Jia (5) Lin, Hai-Qing (5) Zhang, Rui-Qin (5) Mao, Ho-kwang (4) Moore, Ronald J. (4) Olvera de la ...

  3. Effect of Chemical Pressure on the Charge Density Wave Transition...

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    The charge density wave transition is investigated in the bilayer family of rare-earth tritelluride RTesub 3 compounds (RSm, Gd, Tb, Dy, Ho, Er, and Tm) via high-resolution ...

  4. Final Meeting Summary Page 1

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    DOE- ORPNorth Wind Andrea Prignano, WRPS Dieter Bohrmann, Ecology Rich Marshall, DOE-ORPNorth Wind Rachel Baron, HoANW (phone) Emy Laija, EPA Pedro de la Torrez, student...

  5. Staff > Researchers, Postdocs & Graduates > The Energy Materials...

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    List Image Yu Ho (Ric) Wen Postdoc - Archer Group yw563@cornell.edu List Image Joerg Werner Graduate Student - Wiesner Group jgw72@cornell.edu Page 2 of 2 Previous | Next ...

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    ... Ivanov, Ilia N (1) Jeong, Jae Hak (1) Kim, Gee-Man (1) Kim, Jeong Hwan (1) Kim, Jong Hoon ... Cheol Seong ; Kim, Jong Hoon ; Kim, Gee-Man ; Choi, Jae Ho ; Choi, Kang Joon ; Jeong, ...

  7. Treatments of Inhomogeneous Clouds in a GCM Column Radiation...

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    of fractal stratocumulus clouds. J. Atmos. Sci., 51, 2434 -2455. Chou, M.-D., M. J. Suarez, C.-H. Ho, M. M.-H. Yan, and K.-T. Lee, 1998: Parameterizations for cloud...

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    Huang, Li ; Ho, Kai -Ming ; et al Graphene, a single atomic layer of graphite, has been the focus of recent intensive studies due to its novel electronic and structural properties. ...

  9. Rare earth-iron magnetostrictive materials and devices using these materials

    DOE Patents [OSTI]

    Savage, Howard T.; Clark, Arthur E.; McMasters, O. Dale

    1981-12-29

    Grain-oriented polycrystalline or single crystal magnetostrictive materials n the general formula Tb.sub.x Dy.sub.1-x Fe.sub.2-w, Tb.sub.x Ho.sub.1-x Fe.sub.2-w, Sm.sub.x Dy.sub.1-x Fe.sub.x-w, Sm.sub.x Ho.sub.1-x Fe.sub.2-w, Tb.sub.x Ho.sub.y Dy.sub.z Fe.sub.2-w, or Sm.sub.x Ho.sub.y Dy.sub.z Fe.sub.2-w, wherein O.ltoreq.w.ltoreq.0.20, and x+y+z=1. X, y, and z are selected to maximize the magnetostrictive effect and the magnetomechanical coupling coefficient K.sub.33. These material may be used in magnetostrictive transducers, delay lines, variable frequency resonators, and filters.

  10. Quantum Dynamics of Elementary Reactions in the Gas Phase and...

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    a promising route for producing hydrogen from primary fuels is via steam reforming of methanol. Thus, future studies will concentrate on HO + CO --> H + CO2, which is also the...

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    ... CRC Press LLC, 2002. 18. H. Kimura, Chain-Scattering Approach to H-infinity Control, ... H.O. Kreiss, J. Lorenz, Initial-Boundary Value Problems and the Navier-Stokes Equations, ...

  12. City of Milford, Delaware (Utility Company) | Open Energy Information

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    of Milford Place: Delaware Phone Number: 302-422-1110 Website: www.cityofmilford.com23Elect Facebook: https:www.facebook.compagesCity-of-Milford-DE-River-Town-Art-Town-Ho...

  13. Casimir Forces On A Silicon Micromechanical Chip (Journal Article...

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    Authors: Zou, J. 1 ; Marset, zsolt 2 ; Rodriguez, A.W. 3 ; Reid, M. T.H. 4 ; McCauley, A. P. 4 ; Kravchenko, Ivan I 5 ; Bao, Y. 2 ; Johnson, S. G. 4 ; Chan, Ho Bun ...

  14. Optical transmission through double-layer, laterally shifted...

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    2 ; Chan, C. T. 2 ; Kravchenko, Ivan I 3 ; Bower, J. E. 4 ; Cirelli, R. A. 4 ; Klemens, F. 4 ; Mansfield, W. M. 4 ; Miner, J. F. 4 ; Pai, C. S. 4 ; Chan, Ho Bun ...

  15. A half wave retarder made of bilayer subwavelength metallic apertures...

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    Authors: Marset, zsolt 1 ; Chan, Ho Bun 2 ; Carr, D. W. 3 ; Cirelli, R. A. 4 ; Klemens, F. 4 ; Mansfield, W. M. 4 ; Miner, J. F. 4 ; Pai, C. S. 4 ; Kravchenko, Ivan ...

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    840 - 1140 West Pender St. Place: Vancouver, B.C. Zip: V6E 4G1 Sector: Geothermal energy Website: www.alternative-earth.comsHo References: Alternative Earth Website1...

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    (e.g., OH exposure, O3, HO2OH) to controlling factors (e.g., water vapor, external reactivity, UV irradiation), 2) develop simplified OH exposure estimation equations, 3) ...

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    ... Filter Results Filter by Subject Filter by Author Acker, Michael G. (1) Blacklow, Stephen C. (1) Chan, Ho Man (1) Chopra, Rajiv (1) Durzynska, Izabela (1) Fan, Lixin (1) Fodor, ...

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    ... a search of new technologies to take advantage of renewable energy such as solar and wind. ... The MV4-HO-TEMPO ARFB has an exceptionally high cell voltage, 1.25 V. Prototypes of the ...

  20. Cathode material for lithium batteries (Patent) | DOEPatents

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    The mixture is thermally treated to obtain the lithium molybdenum composite transition metal oxide cathode material. Inventors: Park, Sang-Ho ; Amine, Khalil Issue Date: 2015-01-13 ...

  1. B O N N E V I L L E P O W E R A D M I N I S T R A T I O N

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    Metal Halide 4 Series F: LEDSolid State Lighting 5 Series G: HO Linear Fluorescent Hi-Bay 8 Series H: Controls 9 Non-Standard Measures 9 THE BONNEVILLE POWER ADMINISTRATION...

  2. In Focus: Dented Diamonds, Carbon Cages, and Exceptional Potential...

    Office of Science (SC) Website

    This work, featured in the Office of Science's In Focus, was supported by the Energy Frontier Research in Extreme Environments (EFree) center, an EFRC led by Ho-kwang Mao at the ...

  3. Summary of Decisions - February 11, 2013 - February 15, 2013...

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

    OHA Case No. PSH-12-0135 (Wade M. Boswell, H.O.) On February 15, 2013, an OHA Hearing Officer issued a decision in which she concluded that an individual's security clearance ...

  4. July 2013 Most Viewed Documents for Fission And Nuclear Technologies...

    Office of Scientific and Technical Information (OSTI)

    286 Graphite design handbook Ho, F.H. (1988) 136 Behavior of spent nuclear fuel in water pool storage Johnson, A.B. Jr. (1977) 123 Stress analysis and evaluation of a ...

  5. September 2015 Most Viewed Documents for Fission And Nuclear...

    Office of Scientific and Technical Information (OSTI)

    Wilson, D.G. (1982) 107 Vapor-liquid equilibria for nitric acid-water and plutonium nitrate-nitric acid-water solutions Maimoni, A. (1980) 91 Graphite design handbook Ho, F.H. ...

  6. Configuration of ripple domains and their topological defects...

    Office of Scientific and Technical Information (OSTI)

    Authors: Park, Yeonggu 1 ; Choi, Jin Sik 2 ; Choi, Taekjib 3 ; Lee, Mi Jung 1 ; Jia, Quanxi 4 ; Park, Minwoo 1 ; Lee, Hoonkyung 1 ; Park, Bae Ho 1 + Show Author...

  7. Structural evolution of the Pb/Si(111) interface with metal overlayer...

    Office of Scientific and Technical Information (OSTI)

    overlayer thickness Authors: Souto-Casares, Jaime ; Chan, Tzu-Liang ; Chelikowsky, James R. ; Ho, Kai-Ming ; Wang, Cai-Zhuang ; Zhang, S. B. Publication Date: 2015-09-11 OSTI...

  8. Slide 1

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

    group of Dion Vlachos at the University of Delaware Choudhary, V.; Mushrif, S. H.; Ho, C.; Anderko, A.; Nikolakis, V.; Marinkovic, N. S.; Frenkel, A. I.; Sandler, S. I.; Vlachos,...

  9. A=9Be (66LA04)

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

    excited state is 4 times less (HO61G: see also (JA57)). Angular distributions for both groups show maxima in the forward hemisphere. It is suggested that the large cross section...

  10. Summary of Decisions - March 4, 2013 - March 8, 2013 | Department...

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

    Security Interview. OHA Case No. PSH-12-0133 (Kimberly Jenkins-Chapman, H.O.) On March 5, 2013, an OHA Hearing Officer issued a decision in which he determined that an individual's...

  11. Sandia Energy - EC Publications

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

    Ho, C, Iverson, B, Moss, T, Siegel, T year 2010 report-id SAND2010-3364C event ES2010 - Energy Sustainability location Phoenix, AZ Several studies predict an economic benefit of...

  12. Sandia Energy - EC Publications

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

    Solar Energy author Ho, C.K. and G.J. Kolb report-id SAND2009-3003C year 2009 event Energy Sustainability 2009 location San Francisco, CA A method for applying probabilistic...

  13. Multi-channel polarized thermal emitter (Patent) | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    by changing the mutual angle between the orientations of the two gratings. Authors: Lee, Jae-Hwang ; Ho, Kai-Ming ; Constant, Kristen P Publication Date: 2013-07-16 OSTI...

  14. July 2013 Most Viewed Documents for Fission And Nuclear Technologies...

    Office of Scientific and Technical Information (OSTI)

    July 2013 Most Viewed Documents for Fission And Nuclear Technologies Estimation of gas ... Ho, F.H. (1988) 136 Behavior of spent nuclear fuel in water pool storage Johnson, A.B. ...

  15. Title

    National Nuclear Security Administration (NNSA)

    ... Additional evaluations include Bradshaw and Smith (1994), Connor and Hill (1994), Ho et al (1991), Smith et al (1990 and 1991), and Wells et al (1990). For facilities with siting ...

  16. Agenda for Transitioning the Transportation Sector: Exploring...

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

    ... onal Laboratori natural gas and erent transport mental Science a e Public Affairs, s Manager, Ho scussion gen in direct co tion applicatio structure rollo ass of stations & uilt ...

  17. Section 26

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

    W. L. Smith, S. A. Ackerman, D. H. DeSlover, W. F. Feltz, S. Ho, R. O. Knuteson and H. E. ... Feltz, W. F., R. O. Knuteson, H. E. Revercomb, and W. L. Smith, 1997: Atmospheric emitted ...

  18. Optical Study of the Free Carrier Response of LaTiO3/SrTiO3 Superlatti...

    Office of Scientific and Technical Information (OSTI)

    Authors: Seo, S. S. A. 1 ; Choi, W. S. 1 ; Lee, Ho Nyung 2 ; Yu, L. 3 ; Kim, K. W. 3 ; Bernhard, C 3 ; Noh, Tae Won 1 + Show Author Affiliations Seoul National ...

  19. Configuration of ripple domains and their topological defects...

    Office of Scientific and Technical Information (OSTI)

    materials. Authors: Park, Yeonggu 1 ; Choi, Jin Sik 2 ; Choi, Taekjib 3 ; Lee, Mi Jung 1 ; Jia, Quanxi 4 ; Park, Minwoo 1 ; Lee, Hoonkyung 1 ; Park, Bae Ho 1 + Show...

  20. 슬라이드 1

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

    th Annual ARM Science Team Meeting, Norfolk, VA. 2008. 3. 10 Determination of aerosol single scattering albedo and radiative forcing from ground and space observations Earth System Science Interdisciplinary Center (ESSIC), Earth System Science Interdisciplinary Center (ESSIC), Univ. of Maryland (UMD) Univ. of Maryland (UMD) Kwon Kwon - - Ho Lee Ho Lee , Zhanqing Li , Zhanqing Li Contents Introduction 1 SSA retrieval 2 Applications 3 Summary 4 1 Contribution to The East-AIRE campaign Final

  1. In vitro biotransformation of tris(2-butoxyethyl) phosphate (TBOEP) in human liver and serum

    SciTech Connect (OSTI)

    Van den Eede, Nele; Erratico, Claudio; Exarchou, Vassiliki; Maho, Walid; Neels, Hugo; Covaci, Adrian

    2015-04-15

    Tris(2-butoxyethyl) phosphate (TBOEP) is a plasticizer present in indoor dust, reaching levels of several micrograms per gram. Such levels could lead to significant daily exposure of adults and children. Currently, no toxicokinetic data are available to estimate TBOEP clearance in humans after uptake and therefore, one objective of this study was to investigate intrinsic clearance of TBOEP by human liver microsome (HLM) and serum enzymes. Another objective was to generate information to identify and prioritize several metabolites of TBOEP for investigation of human exposure by biomonitoring. 1D and 2D-NMR methodologies were successfully applied on a mixture of the metabolites to confirm the structure of 3-HO-TBOEP (bis(2-butoxyethyl) 3-hydroxyl-2-butoxyethyl phosphate) and to tentatively assign structures to 1-HO-TBOEP and 2-HO-TBOEP. HO-TBOEP isomers and bis(2-butoxyethyl) phosphate (BBOEP), bis(2-butoxyethyl) hydroxyethyl phosphate (BBOEHEP) were further monitored by liquid chromatography–tandem mass spectrometry. Rates of formation of BBOEHEP and HO-TBOEP metabolites by liver enzymes were best described by the Michaelis–Menten model. Apparent K{sub m} values for BBOEHEP, 3-HO-TBOEP, and sum of 1- and 2-HO-TBOEP isomer formation were 152, 197 and 148 μM, respectively. Apparent V{sub max} values for the formation of BBOEHEP, 3-HO-TBOEP, and the sum of 1- and 2-HO-TBOEP isomers were 2560, 643, and 254 pmol/min/mg protein, respectively. No detectable formation of BBOEP occurred with liver or serum enzymes. Our findings indicate that intrinsic clearance of TBOEP is mainly catalyzed by oxidative enzymes in the liver and that its major in vitro metabolite is BBOEHEP. These findings can be applied in human biomonitoring studies and risk assessment. - Highlights: • First steps in the elucidation of TBOEP toxicokinetics • Quantification of TBOEP metabolites in human serum and liver microsomes • No detectable formation of BBOEP occurred with liver or serum

  2. Monodisperse and core-shell structured SiO{sub 2}-Lu{sub 2}O{sub 3}:Ln{sup 3+} (Ln=Eu, Tb, Dy, Sm, Er, Ho, and Tm) spherical particles: A facile synthesis and luminescent properties

    SciTech Connect (OSTI)

    Xu, Zhenhe; Feng, Bin; Bian, Shasha; Liu, Tao; Wang, Mingli; Gao, Yu; Sun, Di; Gao, Xin; Sun, Yaguang

    2012-12-15

    The core-shell structured SiO{sub 2}-Lu{sub 2}O{sub 3}:Ln{sup 3+} particles were realized by coating the Lu{sub 2}O{sub 3}:Ln{sup 3+} phosphors onto the surface of non-aggregated, monodisperse and spherical SiO{sub 2} particles by the Pechini sol-gel method. The as-synthesized products were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), energy-dispersive X-ray (EDX) spectra, scanning electron microscopy (SEM), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM), photolumiminescence (PL), and low-voltage cathodoluminescence (CL). The results indicate that the 800 Degree-Sign C annealed sample consists of crystalline Lu{sub 2}O{sub 3} shells and amorphous SiO{sub 2} cores, in spherical shape with a narrow size distribution. The as-obtained particles show strong light emission with different colors corresponding to different Ln{sup 3+} ions under ultraviolet-visible light excitation and low-voltage electron beams excitation, which have potential applications in fluorescent lamps and field emission displays. - Graphical Abstract: Representative SEM and TEM images of the core-shell structured SiO{sub 2}-Lu{sub 2}O{sub 3}:Eu{sup 3+} particles; CIE chromaticity diagram showing the emission colors for SiO{sub 2}-Lu{sub 2}O{sub 3}:Ln{sup 3+}; Multicolor emissions of SiO{sub 2}-Lu{sub 2}O{sub 3}:Ln{sup 3+} particles. Highlights: Black-Right-Pointing-Pointer The core-shell particles were realized by coating the phosphors onto the surface of SiO{sub 2} particles. Black-Right-Pointing-Pointer The sample consists of crystalline Lu{sub 2}O{sub 3} shells and amorphous SiO{sub 2} cores. Black-Right-Pointing-Pointer The particles show different light emission colors corresponding to Ln{sup 3+} ions. Black-Right-Pointing-Pointer They have potential applications in fluorescent lamps and field emission displays.

  3. Supporting Advanced Scientific Computing Research * Basic Energy...

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

    Peeringupgrades: * EQX-SJ:installedMX480onOct15 th * EQX-ASH:installedMX480onNov30 th * EQX-CHI:PendingMX480ins...

  4. Peering Connections

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

    System Number AS293 IRR Registry RADB AS-SET OBJECT AS-ESnet Exchange Points EQUINIX ASH 206.223.115.137 2001:504:0:2::293:1 EQUINIX ASH Multicast 206.223.135.143 EQUINIX CHI...

  5. SSRL HEADLINES January 2012

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

    SSRL Takes on the Frontiers of Materials Science Chi-Chang Kao As we at SSRL continue to refine our five-to-ten-year strategic plan, our materials science goals are becoming...

  6. Photon Science : SLAC National Accelerator Laboratory

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

    Affairs | Org Chart Photon Science Faculty Arthur I. Bienenstock * John Galayda Chi-Chang Kao Srinivas Raghu Gordon E. Brown, Jr. Siegfried Glenzer Young Lee David A. Reis Axel...

  7. Rietveld Refinement

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

    profile Chi-squared value 4.944 Progress so far Inverse Modeling Method 2 Fourier Method Data Model Refined Structure 40 60 80 100 120 140 160 0 1000 2000 3000 4000...

  8. Low Temperature Scaling of the Susceptibility of Ni Films

    SciTech Connect (OSTI)

    Song, X. H.; Zhang, Xiaoguang; Fan, J.; Jin, Y. R.; Su, S. K.; Zhang, D. L.

    2008-03-01

    Measurement of low field ac susceptibility of Ni thin films over the temperature range 5-300K reveals a surprising power law scaling. The temperature dependent part of the normalized susceptibility, $\\chi_\\parallel/M_S-\\chi_{\\rm rot}/M_S$, where $\\chi_\\parallel$ is the initial susceptibility for in-plane magnetization, $\\chi_{\\rm rot}$ is the domain rotation contribution, and $M_S$ is the saturation magnetization, scales with the nonlinear reduced temperature as $t^{-2}$ over the entire temperature range, where $t=(T-T_C)/(T+T_C)$ and $T_C$ is the Curie temperature. Thickness and reduced temperature dependences are completely decoupled. This result implies that domain wall motion does not contribute to the low field susceptibility.

  9. Search for: All records | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    Zhu, Leyi (6) Dagotto, Elbio R (5) Hu, Bin (5) Zhang, Xiaoguang (5) Chi, Miaofang (4) ... Paul C ; Ward, Thomas Zac ; Gai, Zheng ; Zhang, Xiaoguang ; Shen, Jian January 2014 ...

  10. Confined martensitic phase transformation kinetics and lattice...

    Office of Scientific and Technical Information (OSTI)

    Authors: Cong, Daoyong ; Rule, Kirrily Clair ; Li, Wen-Hsien ; Lee, Chi-Hung ; Zhang, Qinghua ; Wang, Haoliang ; Hao, Yulin ; Wang, Yandong ; Huang, E-Wen Search SciTech Connect ...

  11. Search for: All records | DOE PAGES

    Office of Scientific and Technical Information (OSTI)

    Filter Results Filter by Author Shi, Jing (4) Tang, Chi (4) Jiang, Zilong (3) Aldosary, Mohammed (2) Xu, Yadong (2) Chan, Kyle (1) Chang, Cui-Zu (1) Chang, Houchen (1) Garay, ...

  12. Strains for the production of flavonoids from glucose

    SciTech Connect (OSTI)

    Stephanopoulos, Gregory; Santos, Christine; Koffas, Mattheos

    2015-11-13

    The invention relates to the production of flavonoids and flavonoid precursors in cells through recombinant expression of tyrosine ammonia lyase (TAL), 4-coumarate:CoA ligase (4CL), chalcone synthase (CHS), and chalcone isomerase (CHI).

  13. U.S. Department of Energy

    Office of Environmental Management (EM)

    ... Phone: (404) 894-4960 Fax : (404) 894-9320 www.catea.org CHI Centers 10501 New Hampshire Avenue Silver Spring, MD 20903 Phone 1: (301) 445-3350 Phone 2: (301) 439-5366 Fax ...

  14. Search for: All records | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    ... October 2012 Equation of state for dark energy in f(T) gravity Bamba, Kazuharu ; Geng, Chao-Qiang ; Lee, Chung-Chi ; Luo, Ling-Wei, E-mail: bamba@kmi.nagoya-u.ac.jp, E-mail: ...

  15. Wave-function functionals for the density

    SciTech Connect (OSTI)

    Slamet, Marlina; Pan Xiaoyin; Sahni, Viraht

    2011-11-15

    We extend the idea of the constrained-search variational method for the construction of wave-function functionals {psi}[{chi}] of functions {chi}. The search is constrained to those functions {chi} such that {psi}[{chi}] reproduces the density {rho}(r) while simultaneously leading to an upper bound to the energy. The functionals are thereby normalized and automatically satisfy the electron-nucleus coalescence condition. The functionals {psi}[{chi}] are also constructed to satisfy the electron-electron coalescence condition. The method is applied to the ground state of the helium atom to construct functionals {psi}[{chi}] that reproduce the density as given by the Kinoshita correlated wave function. The expectation of single-particle operators W={Sigma}{sub i}r{sub i}{sup n}, n=-2,-1,1,2, W={Sigma}{sub i}{delta}(r{sub i}) are exact, as must be the case. The expectations of the kinetic energy operator W=-(1/2){Sigma}{sub i}{nabla}{sub i}{sup 2}, the two-particle operators W={Sigma}{sub n}u{sup n}, n=-2,-1,1,2, where u=|r{sub i}-r{sub j}|, and the energy are accurate. We note that the construction of such functionals {psi}[{chi}] is an application of the Levy-Lieb constrained-search definition of density functional theory. It is thereby possible to rigorously determine which functional {psi}[{chi}] is closer to the true wave function.

  16. Metal oxides of molybdenum of molybdenum or molybdenum and tungsten

    SciTech Connect (OSTI)

    Carcia, P.F.; McCarron, E.M.

    1988-06-28

    A method for preparing a composition of matter comprising ..beta..-Mo/sub 1-chi/W/sub chi/O/sub 3/, wherein 0less than or equal tochi<1.0, comprising spray-drying a solution of molybdic acid or molybdic and tungstic acids in appropriate concentrations and heating the resulting powder at a temperature of from about 275/sup 0/C to about 450/sup 0/C.

  17. Nesfatin-1 inhibits ovarian epithelial carcinoma cell proliferation in vitro

    SciTech Connect (OSTI)

    Xu, Yang; Pang, Xiaoyan; Dong, Mei; Wen, Fang Zhang, Yi

    2013-11-01

    Highlights: Nesfatin-1 inhibits the proliferation and growth of HO-8910 cells by G1 phase arrest. Nesfatin-1 enhances HO-8910 cell apoptosis. Nesfatin-1 inhibits HO-8910 cell proliferation via mTOR and RhoA/ROCK signaling pathway. The first report of nesfatin-1-mediated proliferation in ovarian epithelial carcinoma. -- Abstract: Nesfatin-1, an 82-amino-acid peptide derived from a 396-amino-acid precursor protein nucleobindin 2 (NUCB2), was originally identified in hypothalamic nuclei involved in the regulation of food intake. It was recently reported that nesfatin-1 is a novel depot specific adipokine preferentially produced by subcutaneous tissue, with obesity- and food deprivation-regulated expression. Although a relation between ovarian cancer mortality and obesity has been previously established, a role of nesfatin-1 in ovarian epithelial carcinoma remains unknown. The aim of the present study is to examine the effect of nesfatin-1 on ovary carcinoma cells proliferation. We found that nesfatin-1 inhibits the proliferation and growth of HO-8910 cells by G1 phase arrest, this inhibition could be abolished by nesfatin-1 neutralizing antibody. Nesfatin-1 enhances HO-8910 cell apoptosis, activation of mammalian target of rapamycin (mTOR) and RhoA/ROCK signaling pathway block the effects of nesfatin-1-induced apoptosis, therefore reverses the inhibition of HO-8910 cell proliferation by nesfatin-1. In conclusion, the present study demonstrated that nesfatin-1 can inhibit the proliferation in human ovarian epithelial carcinoma cell line HO-8910 cells through inducing apoptosis via mTOR and RhoA/ROCK signaling pathway. This study provides a novel regulatory signaling pathway of nesfatin-1-regulated ovarian epithelial carcinoma growth and may contribute to ovarian cancer prevention and therapy, especially in obese patients.

  18. Search for direct pair production of scalar top quarks in the single- and dilepton channels in proton-proton collisions at $$\\sqrt{s}$$ = 8 TeV

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

    Khachatryan, Vardan

    2016-07-01

    Results are reported from a search for the top squarkmore » $$ \\tilde{t}_1 $$, the lighter of the two supersymmetric partners of the top quark. The data sample corresponds to 19.7 fb$$^{-1}$$ of proton-proton collisions at $$\\sqrt{s} =$$ 8 TeV collected with the CMS detector at the LHC. The search targets $$ \\tilde{t}_1 \\to \\mathrm{b} \\tilde{\\chi}^{\\pm}_1$$ and $$ \\tilde{t}_1 \\to \\mathrm{t}^{(*)} \\tilde{\\chi}^0_1$$ decay modes, where $$\\tilde{\\chi}^{\\pm}_1$$ and $$\\tilde{\\chi}^0_1$$ are the lightest chargino and neutralino, respectively. The reconstructed final state consists of jets, b jets, missing transverse energy, and either one or two leptons. Leading backgrounds are determined from data. No significant excess in data is observed above the expectation from standard model processes. The results exclude a region of the two-dimensional plane of possible $$ \\tilde{t}_1 $$ and $$\\tilde{\\chi}^0_1 $$ masses. The highest excluded $$ \\tilde{t}_1 $$ and $$ \\tilde{\\chi}^0_1$$ masses are about 700 GeV and 250 GeV, respectively.« less

  19. Extended MHD Studies of Flow-Driven and Reconnecting Instabilities in Toroidal Plasmas

    SciTech Connect (OSTI)

    Ebrahimi, Fatima

    2014-04-30

    For steady-state reactor scenarios, inductive ohmic current drive alone is not sufficient. If helicity (a topological property which quantifies the knottedness of the magnetic field lines) is created and injected into a plasma configuration, the additional linkage of the magnetic fluxes can sustain the configuration indefinitely against resistive decay. Injection of magnetic helicity into the plasma is closely related to current drive. Various techniques such as DC and AC helicity injection can be used for steady-state current drive, which both rely on relaxation process for core current penetration. However, helicity injection has also been used for edge current drive and non-inductive startup current drive. A solenoid-free plasma startup method called coaxial helicity injection (CHI) has been investigated in the NSTX, and has shown to generate a closedflux equilibrium and produce a CHI-driven current well-coupled to the induction. We propose to perform nonlinear CHI simulations in NSTX, which will provide further insight into the viability of CHI as a startup current drive technique and its role in ultimate steady-state operation of fusion reactors. The goals of our proposed simulations are to understand the physics of current relaxation by CHI in relation to transport and mode dynamics, and to perform long term simulations when CHI is coupled to the induction.

  20. Non-coding RNAs and heme oxygenase-1 in vaccinia virus infection

    SciTech Connect (OSTI)

    Meseda, Clement A.; Srinivasan, Kumar; Wise, Jasen; Catalano, Jennifer; Yamada, Kenneth M.; Dhawan, Subhash

    2014-11-07

    Highlights: Heme oxygenase-1 (HO-1) induction inhibited vaccinia virus infection of macrophages. Reduced infectivity inversely correlated with increased expression of non-coding RNAs. The regulation of HO-1 and ncRNAs suggests a novel host defense response against vaccinia virus infection. - Abstract: Small nuclear RNAs (snRNAs) are <200 nucleotide non-coding uridylate-rich RNAs. Although the functions of many snRNAs remain undetermined, a population of snRNAs is produced during the early phase of infection of cells by vaccinia virus. In the present study, we demonstrate a direct correlation between expression of the cytoprotective enzyme heme oxygenase-1 (HO-1), suppression of selective snRNA expression, and inhibition of vaccinia virus infection of macrophages. Hemin induced HO-1 expression, completely reversed virus-induced host snRNA expression, and suppressed vaccinia virus infection. This involvement of specific virus-induced snRNAs and associated gene clusters suggests a novel HO-1-dependent host-defense pathway in poxvirus infection.

  1. Safety evaluation for packaging (onsite) nitrogen trailers propane tanks

    SciTech Connect (OSTI)

    Ferrell, P.C.

    1998-01-28

    The purpose of the Safety Evaluation for Packaging (SEP) is the evaluation and authorization of the onsite transport of propane tanks that are mounted on the Lockheed Martin Hanford Corporation Characterization Project`s nitrogen trailers. This SEP authorizes onsite transport of the nitrogen trailers, including the propane tanks, until May 31, 1998. The three nitrogen trailers (HO-64-4966, HO-64-4968, and HO-64-5170) are rated for 1,361 kg (30,000 lb) and are equipped with tandem axles and pintel hitches. Permanently mounted on each trailer is a 5,678 L (1,500 gal) cryogenic dewar that is filled with nitrogen, and a propane fired water bath vaporizer system, and a 454 L (1 20 gal) propane tank. The nitrogen trailer system is operated only when it is disconnected from the tow vehicle and is leveled and stabilized. When the trailers are transported, the propane tanks are isolated via closed supply valves.

  2. Rad-Hydro with a High-Order, Low-Order Method

    SciTech Connect (OSTI)

    Wollaber, Allan Benton; Park, HyeongKae; Lowrie, Robert Byron; Rauenzahn, Rick M.; Cleveland, Mathew Allen

    2015-08-04

    Moment-based acceleration via the development of high-order, low-order (HO-LO) algorithms has provided substantial accuracy and efficiency enhancements for solutions of the nonlinear, thermal radiative transfer equations by CCS-2 and T-3 staff members. Accuracy enhancements over traditional, linearized methods are obtained by solving a nonlinear, timeimplicit HO-LO system via a Jacobian-free Newton Krylov procedure. This also prevents the appearance of non-physical maximum principle violations (temperature spikes) associated with linearization. Efficiency enhancements are obtained in part by removing effective scattering from the linearized system. In this highlight, we summarize recent work in which we formally extended the HO-LO radiation algorithm to include operator-split radiation-hydrodynamics.

  3. A=9B (1979AJ01)

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

    9AJ01) (See Energy Level Diagrams for 9B) GENERAL: See also (1974AJ01) and Table 9.9 [Table of Energy Levels] (in PDF or PS). Model calculations: (1977HO1F, 1977OK01, 1978HO1E). Special levels: (1974IR04, 1975WI1E, 1976IR1B, 1978HO1E). Astrophysical questions: (1977SI1D). Pion reactions: (1974KA07). Other topics: (1974HA1C, 1974IR04, 1976IR1B). Ground state properties: (1975BE31, 1977OK01). 1. (a) 6Li(3He, n)8B Qm = -1.975 Eb = 16.603 (b) 6Li(3He, p)8Be Qm = 16.7878 (c) 6Li(3He, d)7Be Qm = 0.113

  4. Graduate Students | Photosynthetic Antenna Research Center

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

    Graduate Students Graduate Students Wu Zhiyuan Graduate Student Read more about Wu Zhiyuan Guy Mayneord Graduate Student Read more about Guy Mayneord Benjamin Wolf Graduate Student Read more about Benjamin Wolf Jeremy King Graduate Student Read more about Jeremy King Hui-Yuan Chen Graduate Student Read more about Hui-Yuan Chen Nathan Soulier Graduate Student Read more about Nathan Soulier Ming-Yang Ho Graduate Student Read more about Ming-Yang Ho Rui Liu Graduate Student Read more about Rui Liu

  5. Recent results at ultrahigh spin: Terminating states and beyond in mass 160 rare-earth nuclei

    SciTech Connect (OSTI)

    Paul, E. S.; Rees, J. M.; Hampson, P.; Riley, M. A.; Simpson, J.; Ayangeakaa, A. D.; Baron, J. S.; Carpenter, M. P.; Chiara, C. J.; Garg, U.; Hartley, D. J.; Hoffman, C. R.; Janssens, R. V. F.; Kondev, F. G.; Lauritsen, T.; Mason, P. J. R.; Matta, J.; Miller, S. L.; Nolan, P. J.; Ollier, J.; Petri, M.; Radford, D. C.; Revill, J. P.; Wang, X.; Zhu, S.; Ragnarsson, I.

    2015-01-01

    A classic region of band termination at high spin occurs in rare-earth nuclei with around ten valence nucleons above the 146Gd closed core. The results are presented here for such non-collective oblate (γ = 60°) terminating states in odd-Z 155Ho, odd–odd 156Ho, and even–even 156Er, where they are compared with neighboring nuclei. In addition to these particularly favoured states, the occurrence of collective triaxial strongly deformed (TSD) bands, bypassing the terminating states and extending to over 65ℏ, is reviewed.

  6. The generation of 4-hydroxynonenal, an electrophilic lipid peroxidation end product, in rabbit cornea organ cultures treated with UVB light and nitrogen mustard

    SciTech Connect (OSTI)

    Zheng, Ruijin; Po, Iris; Mishin, Vladimir; Black, Adrienne T.; Heck, Diane E.; Laskin, Debra L.; Sinko, Patrick J.; Gerecke, Donald R.; Gordon, Marion K.; Laskin, Jeffrey D.

    2013-10-15

    The cornea is highly sensitive to oxidative stress, a process that can lead to lipid peroxidation. Ultraviolet light B (UVB) and nitrogen mustard (mechlorethamine) are corneal toxicants known to induce oxidative stress. Using a rabbit air-lifted corneal organ culture model, the oxidative stress responses to these toxicants in the corneal epithelium was characterized. Treatment of the cornea with UVB (0.5 J/cm{sup 2}) or nitrogen mustard (100 nmol) resulted in the generation of 4-hydroxynonenal (4-HNE), a reactive lipid peroxidation end product. This was associated with increased expression of the antioxidant, heme oxygenase-1 (HO-1). In human corneal epithelial cells in culture, addition of 4-HNE or 9-nitrooleic acid, a reactive nitrolipid formed during nitrosative stress, caused a time-dependent induction of HO-1 mRNA and protein; maximal responses were evident after 10 h with 30 μM 4-HNE or 6 h with 10 μM 9-nitrooleic acid. 4-HNE and 9-nitrooleic acid were also found to activate Erk1/2, JNK and p38 MAP kinases, as well as phosphoinositide-3-kinase (PI3)/Akt. Inhibition of p38 blocked 4-HNE- and 9-nitrooleic acid-induced HO-1 expression. Inhibition of Erk1/2, and to a lesser extent, JNK and PI3K/Akt, suppressed only 4-HNE-induced HO-1, while inhibition of JNK and PI3K/Akt, but not Erk1/2, partly reduced 9-nitrooleic acid-induced HO-1. These data indicate that the actions of 4-HNE and 9-nitrooleic acid on corneal epithelial cells are distinct. The sensitivity of corneal epithelial cells to oxidative stress may be an important mechanism mediating tissue injury induced by UVB or nitrogen mustard. - Highlights: • UVB or nitrogen mustard causes rabbit corneal epithelial injury. • 4-Hydroxynonenal (4-HNE) was formed and heme oxygenase-1 (HO-1) was increased. • 4-HNE induced HO-1 mRNA and protein expression in human corneal epithelial cells. • The induction of HO-1 by 4-HNE was through MAP kinase activation.

  7. Hydrodesulfurization catalysis by Chevrel phase compounds

    DOE Patents [OSTI]

    McCarty, Kevin F.; Schrader, Glenn L.

    1985-12-24

    A process is disclosed for the hydrodesulfurization of sulfur-containing hydrocarbon fuel with reduced ternary molybdenum sulfides, known as Chevrel phase compounds. Chevrel phase compounds of the general composition M.sub.x Mo.sub.6 S.sub.8, with M being Ho, Pb, Sn, Ag, In, Cu, Fe, Ni, or Co, were found to have hydrodesulfurization activities comparable to model unpromoted and cobalt-promoted MoS.sub.2 catalysts. The most active catalysts were the "large" cation compounds (Ho, Pb, Sn), and the least active catalysts were the "small" cation compounds (Cu, Fe, Ni, Co.).

  8. Hydrodesulfurization catalyst by Chevrel phase compounds

    DOE Patents [OSTI]

    McCarty, K.F.; Schrader, G.L.

    1985-05-20

    A process is disclosed for the hydrodesulfurization of sulfur-containing hydrocarbon fuel with reduced ternary molybdenum sulfides, known as Chevrel phase compounds. Chevrel phase compounds of the general composition M/sub x/Mo/sub 6/S/sub 8/, with M being Ho, Pb, Sn, Ag, In, Cu, Fe, Ni, or Co, were found to have hydrodesulfurization activities comparable to model unpromoted and cobalt-promoted MoS/sub 2/ catalysts. The most active catalysts were the ''large'' cation compounds (Ho, Pb, Sn), and the least active catalysts were the ''small'' cation compounds (Cu, Fe, Ni, Co.).

  9. Photolysis of CH{sub 3}CHO at 248 nm: Evidence of triple fragmentation from primary quantum yield of CH{sub 3} and HCO radicals and H atoms

    SciTech Connect (OSTI)

    Morajkar, Pranay; Schoemaecker, Coralie; Fittschen, Christa; Bossolasco, Adriana

    2014-06-07

    Radical quantum yields have been measured following the 248 nm photolysis of acetaldehyde, CH{sub 3}CHO. HCO radical and H atom yields have been quantified by time resolved continuous wave Cavity Ring Down Spectroscopy in the near infrared following their conversion to HO{sub 2} radicals by reaction with O{sub 2}. The CH{sub 3} radical yield has been determined using the same technique following their conversion into CH{sub 3}O{sub 2}. Absolute yields have been deduced for HCO radicals and H atoms through fitting of time resolved HO{sub 2} profiles, obtained under various O{sub 2} concentrations, to a complex model, while the CH{sub 3} yield has been determined relative to the CH{sub 3} yield from 248 nm photolysis of CH{sub 3}I. Time resolved HO{sub 2} profiles under very low O{sub 2} concentrations suggest that another unknown HO{sub 2} forming reaction path exists in this reaction system besides the conversion of HCO radicals and H atoms by reaction with O{sub 2}. HO{sub 2} profiles can be well reproduced under a large range of experimental conditions with the following quantum yields: CH{sub 3}CHO?+?h?{sub 248nm} ? CH{sub 3}CHO{sup *}, CH{sub 3}CHO{sup *} ? CH{sub 3}?+?HCO??{sub 1a} = 0.125??0.03, CH{sub 3}CHO{sup *} ? CH{sub 3}?+?H?+?CO??{sub 1e} = 0.205??0.04, CH{sub 3}CHO{sup *}?{sup o{sub 2}}CH{sub 3}CO?+?HO{sub 2}??{sub 1f} = 0.07??0.01. The CH{sub 3}O{sub 2} quantum yield has been determined in separate experiments as ?{sub CH{sub 3}} = 0.33 0.03 and is in excellent agreement with the CH{sub 3} yields derived from the HO{sub 2} measurements considering that the triple fragmentation (R1e) is an important reaction path in the 248 nm photolysis of CH{sub 3}CHO. From arithmetic considerations taking into account the HO{sub 2} and CH{sub 3} measurements we deduce a remaining quantum yield for the molecular pathway: CH{sub 3}CHO{sup *} ? CH{sub 4}?+?CO??{sub 1b} = 0.6. All experiments can be consistently explained with absence of the formerly considered

  10. Recent results at ultrahigh spin: Terminating states and beyond in mass 160 rare-earth nuclei

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

    Paul, E. S.; Rees, J. M.; Hampson, P.; Riley, M. A.; Simpson, J.; Ayangeakaa, A. D.; Baron, J. S.; Carpenter, M. P.; Chiara, C. J.; Garg, U.; et al

    2015-01-01

    A classic region of band termination at high spin occurs in rare-earth nuclei with around ten valence nucleons above the 146Gd closed core. The results are presented here for such non-collective oblate (γ = 60°) terminating states in odd-Z 155Ho, odd–odd 156Ho, and even–even 156Er, where they are compared with neighboring nuclei. In addition to these particularly favoured states, the occurrence of collective triaxial strongly deformed (TSD) bands, bypassing the terminating states and extending to over 65ℏ, is reviewed.

  11. DOE Durability Working Group December 2014 Meeting Agenda

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

    DOE Durability Working Group Meeting Tuesday, December 16, 2014, 9:00 am to 4:00 pm Argonne National Laboratory Energy Sciences Building, Building 241, Room A323 Lemont, IL 8:45 am Arrive and get settled. 9:00 am Welcome and introductory comments Debbie Myers (Argonne), Rod Borup (LANL), Donna Ho (DOE), Co-chairs of Durability Working Group 9:05 am Summary presentation of durability needs from 2013and 2014 workshops Donna Ho (DOE) Summary of new results and discussion of missing component-level

  12. The dynamic shape factor of sodium chloride nanoparticles as regulated by drying rate

    SciTech Connect (OSTI)

    Wang, Z.; Lewis, E.; King, S. M.; Freney, E.; Rosenoern, T.; Smith, M.; Chen, Q.; Kuwata, M.; Poschl, U.; Wang, W.; Buseck, P. R.; Martin, S. T.

    2010-09-01

    The influence of drying rate on the dynamic shape factor {chi} of NaCl particles was investigated. The drying rate at the efflorescence relative humidity (ERH) of 45% was controlled in a laminar flow tube and varied from 5.5 {+-} 0.9 to 101 {+-} 3 RH s{sup -1} at ERH, where RH represents one percent unit of relative humidity. Dry particles having mobility diameters of 23-84 nm were studied, corresponding to aqueous particles of 37-129 nm at the RH (57%) prior to drying. At each mobility diameter and drying rate, the critical supersaturation of cloud-condensation activation was also measured. The mobility diameter and the critical supersaturation were combined in an analysis to determine the value of {chi}. The measured values varied from 1.02 to 1.26. For fixed particle diameter the {chi} value decreased with increasing drying rate. For fixed drying rate, a maximum occurred in {chi} between 35- and 40-nm dry mobility diameter, with a lower {chi} for both smaller and larger particles. The results of this study, in conjunction with the introduced apparatus for obtaining quantified drying rates, can allow the continued development of a more detailed understanding of the morphology of submicron salt particles, with the potential for the follow-on development of quantitative modeling of evaporation and crystal growth at these dimensions.

  13. Search for Supersymmetry Using Diphoton Events in p anti-p Collisions at a center of mass energy of 1.96-TeV

    SciTech Connect (OSTI)

    Lee, Eun Sin; /Texas A-M

    2010-05-01

    This dissertation presents the results of a search for supersymmetry in proton-antiproton collisions with a center of mass energy of 1.96 TeV studied with the Collider Detector at Fermilab. Our strategy is to select collisions with two photons in the final state that have the properties of being the decays of very massive supersymmetric particles. This includes looking for large total energy from the decayed particles as well as for the presence of particles that leave the detector without interacting. We find no events using 2.6 fb{sup -1} of data collected during the 2004-2008 collider run of the Fermilab Tevatron which is consistent with the background estimate of 1.4 {+-} 0.4 events. Since there is no evidence of new particles we set cross section limits in a gauge-mediated supersymmetry model with {tilde {chi}}{sub 1}{sup 0} {yields} {gamma}{tilde G}, where the {tilde {chi}}{sub 1}{sup 0} and {tilde G} are the lightest neutralino and the gravitino (the lightest supersymmetric particle), respectively. We set limits on models as a function of the {tilde {chi}}{sub 1}{sup 0} mass and lifetime, producing the world's most sensitive search for {tilde {chi}}{sub 1}{sup 0} by excluding masses up to 149 GeV/c{sup 2} for {tilde {chi}}{sub 1}{sup 0} lifetimes much less than 1 ns.

  14. Search for pair production of scalar bottom quarks in p anti-p collisions at s**(1/2) = 1.96-TeV

    SciTech Connect (OSTI)

    Abazov, V.M.; Abbott, B.; Abolins, M.; Acharya, B.S.; Adams, M.; Adams, T.; Agelou, M.; Ahn, S.H.; Ahsan, M.; Alexeev, G.D.; Alkhazov, G.; /Buenos Aires U. /Rio de Janeiro, CBPF /Rio de Janeiro State U. /Sao Paulo, IFT /Alberta U. /Simon Fraser U. /York U., Canada /McGill U. /Beijing, Inst. High Energy Phys. /Hefei, CUST /Andes U., Bogota

    2006-08-01

    A search for direct production of scalar bottom quarks ({bar b}) is performed with 310 pb{sup -1} of data collected by the D0 experiment in p{bar p} collisions at {radical}s = 1.96 TeV at the Fermilab Tevatron Collider. The topology analyzed consists of two b jets and an imbalance in transverse momentum due to undetected neutralinos ({tilde {chi}}{sub 1}{sup 0}), with {tilde {chi}}{sub 1}{sup 0} assumed to be the lightest supersymmetric particle. They find the data consistent with standard model expectations, and set a 95% C.L. exclusion domain in the (m{sub {tilde b}}, m{sub {tilde {chi}}}) mass plane, improving significantly upon the results from Run I of the Tevatron.

  15. Pions in the quark matter phase diagram

    SciTech Connect (OSTI)

    Zablocki, D.; Blaschke, D.; Anglani, R.

    2008-08-29

    The relationship between mesonic correlations and quantum condensates in the quark matter phase diagram is explored within a quantum field theoretical approach of the Nambu and Jona-Lasinio (NJL) type. Mean-field values in the scalar meson and diquark channels are order parameters signaling the occurrence of quark condensates, entailing chiral symmetry breaking ({chi}SB) and color superconductivity (2SC) in quark matter. We investigate the spectral properties of scalar and pseudoscalar meson excitations in the phase diagram in Gaussian approximation and show that outside the {chi}SB region where the pion is a zero-width bound state, there are two regions where it can be considered as a quasi-bound state with a lifetime exceeding that of a typical heavy-ion collision fireball: (A) the high-temperature {chi}SB crossover region at low densities and (B) the high-density color superconducting phase at temperatures below 100 MeV.

  16. Ion heating during magnetic relaxation in the helicity injected torus-II experiment

    SciTech Connect (OSTI)

    O'Neill, R.G.; Redd, A.J.; Hamp, W.T.; Smith, R.J.; Jarboe, T.R.

    2005-12-15

    Ion doppler spectroscopy (IDS) is applied to the helicity injected torus (HIT-II) spherical torus to measure impurity ion temperature and flows. [A. J. Redd et al., Phys. Plasmas 9, 2006 (2002)] The IDS instrument employs a 16-channel photomultiplier and can track temperature and velocity continuously through a discharge. Data for the coaxial helicity injection (CHI), transformer, and combined current drive configurations are presented. Ion temperatures for transformer-driven discharges are typically equal to or somewhat lower than electron temperatures measured by Thomson scattering. Internal reconnection events in transformer-driven discharges cause rapid ion heating. The CHI discharges exhibit anomalously high ion temperatures >250 eV, which are an order of magnitude higher than Thomson measurements, indicating ion heating through magnetic relaxation. The CHI discharges that exhibit current and poloidal flux buildup after bubble burst show sustained ion heating during current drive.

  17. Search for the pair production of scalar top quarks in the acoplanar charm jet final state in p anti-p collisions at s**(1/2) = 1.96-TeV

    SciTech Connect (OSTI)

    Abazov, V.M.; Abbott, B.; Abolins, M.; Acharya, B.S.; Adams, M.; Adams, T.; Aguilo, E.; Ahn, S.H.; Ahsan, M.; Alexeev, G.D.; Alkhazov, G.; /Buenos Aires U. /Rio de Janeiro, CBPF /Rio de Janeiro State U. /Sao Paulo, IFT /Alberta U. /Simon Fraser U. /York U., Canada /McGill U. /Hefei, CUST /Andes U., Bogota /Charles U.

    2006-11-01

    A search for the pair production of scalar top quarks, {bar t}, has been performed in 360 pb{sup -1} of data from p{bar p} collisions at a center-of-mass energy of 1.96 TeV, collected by the D0 detector at the Fermilab Tevatron collider. The {bar t} decay mode considered is {bar t} {yields} c{bar {chi}}{sub 1}{sup 0}, where {bar {chi}}{sub 1}{sup 0} is the lightest supersymmetric particle. The topology analyzed therefore consists of a pair of acoplanar heavy-flavor jets with missing transverse energy. The data show good agreement with the standard model expectation, and a 95% C.L. exclusion domain in the (m{sub {tilde t}}, m{sub {tilde {chi}}{sub 1}{sup 0}}) plane has been determined, extending the domain excluded by previous experiments.

  18. Central Exclusive Production at the Tevatron

    SciTech Connect (OSTI)

    Albrow, Michael

    2009-03-23

    In CDF we have observed several exclusive processes: {gamma}{gamma}{yields}e{sup +}e{sup -} and {mu}{sup +}{mu}{sup -}, {gamma}+IP{yields}J/{psi}, {psi}(2S) and IP+IP{yields}{chi}{sub c}. The cross sections agree with QED, HERA photoproduction data, and theoretical estimates of gg{yields}{chi}{sub c} with another gluon exchanged to screen the color. This observation of exclusive {chi}{sub c}, together with earlier observations of exclusive dijets and exclusive {gamma}{gamma} candidates, support some theoretical predictions for p+p{yields}p+SMH+p at the LHC. Exclusive dileptons offer the best means of precisely calibrating forward proton spectrometers.

  19. Central exclusive production at the Tevatron

    SciTech Connect (OSTI)

    Albrow, Michael G.; /Fermilab

    2008-12-01

    In CDF we have observed several exclusive processes: 2-photon {yields} e{sup +}e{sup -} and {mu}{sup +}{mu}{sup -}, photon+pomeron {yields} J/{psi} and {psi}(2S), and pomeron+pomeron {yields} {chi}{sub c}. The cross sections agree with QED, HERA photoproduction data, and theoretical estimates of gg {yields} {chi}{sub c} with another gluon exchanged to screen the color. This observation of exclusive {chi}{sub c}, together with earlier observations of exclusive dijets and exclusive 2-photon candidates, support some theoretical predictions for p+p {yields} p+H+p at the LHC. Exclusive dileptons offer the best means of precisely calibrating forward proton spectrometers.

  20. Modeling the efficient access of full-text information

    SciTech Connect (OSTI)

    Bernard, M.; Kero, R.; Korp, P.; McCusker-Whiting, M.; Tsur, S.; Dunlap, K.; Johnson, L.

    1996-05-01

    The title of this paper describes a research goal set by many offices within US DOE. This paper reviews efficient full-text searching techniques being developed to better understand and meet this goal. Classical computer human interaction (CHI) approaches provided by commercial information retrieval (IR) engines fail to contextualize information in ways that facilitate timely decision making. Use of advanced CHI techniques (eg, visualization) in combination with deductive database technology augment the weaknesses found in presentation capabilities of IR engines and are discussed. Various techniques employed in a Web-based prototype system currently under development are presented.

  1. SSRL HEADLINES August 2014

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

    - August 2014 View the Archives **Note for Outlook users: For easier reading, please click the bar at the top of this message that reads "This message was converted to plain text" and select "Display as HTML."** SLAC Director Chi-Chang Kao Announces Kelly Gaffney as New SSRL Director On Monday, August 18, 2014, SLAC Director Chi-Chang Kao announced: Kelly Gaffney "After a year-long international search for a new Director of the Stanford Synchrotron Radiation Lightsource

  2. Effect of solution annealing temperature on precipitation in 2205 duplex stainless steel

    SciTech Connect (OSTI)

    Kashiwar, A.; Vennela, N. Phani; Kamath, S.L.; Khatirkar, R.K.

    2012-12-15

    In the present study, effect of solution annealing temperature (1050 Degree-Sign C and 1100 Degree-Sign C) and isothermal ageing (700 Degree-Sign C: 15 min to 6 h) on the microstructural changes in 2205 duplex stainless steel has been investigated systematically. Scanning electron microscopy and X-ray diffraction were adopted to follow the microstructural evolution, while an energy dispersive spectrometer attached to scanning electron microscope was used to obtain localised chemical information of various phases. The ferritic matrix of the two phase 2205 duplex stainless steel ({approx} 45% ferrite and {approx} 55% austenite) undergoes a series of metallurgical transformations during ageing-formation of secondary austenite ({gamma}{sub 2}) and precipitation of Cr and Mo rich intermetallic (chi-{chi} and sigma-{sigma}) phases. For solution annealing at 1050 Degree-Sign C, significant amount of carbides were observed in the ferrite grains after 1 h of ageing at 700 Degree-Sign C. {chi} Phase precipitated after the precipitation of carbides-preferentially at the ferrite-ferrite and also at the ferrite-austenite boundaries. {sigma} Phase was not observed in significant quantity even after 6 h of ageing. The sequence of precipitation in samples solution annealed at 1050 Degree-Sign C was found to be carbides {yields} {chi} {yields} {sigma}. On the contrary, for samples solution annealed at 1100 Degree-Sign C, the precipitation of {chi} phase was negligible. {chi} Phase precipitated before {sigma} phase, preferentially along the ferrite-ferrite grain boundaries and was later consumed in the {sigma} phase precipitation. The {sigma} phase precipitated via the eutectoid transformation of ferrite to yield secondary austenite {gamma}{sub 2} and {sigma} phase in the ferrite and along the ferrite-austenite grain boundaries. An increase in the volume fraction of {gamma}{sub 2} and {sigma} phase with simultaneous decrease in the ferrite was evidenced with ageing. - Highlights

  3. Studies of phase transitions and quantum chaos relationships in extended Casten triangle of IBM-1

    SciTech Connect (OSTI)

    Proskurins, J.; Andrejevs, A.; Krasta, T.; Tambergs, J. [University of Latvia, Institute of Solid State Physics (Latvia)], E-mail: juris_tambergs@yahoo.com

    2006-07-15

    A precise solution of the classical energy functional E(N, {eta}, {chi}; {beta}) minimum problem with respect to deformation parameter {beta} is obtained for the simplified Casten version of the standard interacting boson model (IBM-1) Hamiltonian. The first-order phase transition lines as well as the critical points of X(5), -X(5), and E(5) symmetries are considered. The dynamical criteria of quantum chaos-the basis state fragmentation width and the wave function entropy - are studied for the ({eta}, {chi}) parameter space of the extended Casten triangle, and the possible relationships between these criteria and phase transition lines are discussed.

  4. A Novel, ;Double-Clamp; Binding Mode for Human Heme Oxygenase-1 Inhibition

    SciTech Connect (OSTI)

    Rahman, Mona N.; Vlahakis, Jason Z.; Vukomanovic, Dragic; Lee, Wallace; Szarek, Walter A.; Nakatsu, Kanji; Jia, Zongchao

    2012-08-01

    The development of heme oxygenase (HO) inhibitors is critical in dissecting and understanding the HO system and for potential therapeutic applications. We have established a program to design and optimize HO inhibitors using structure-activity relationships in conjunction with X-ray crystallographic analyses. One of our previous complex crystal structures revealed a putative secondary hydrophobic binding pocket which could be exploited for a new design strategy by introducing a functional group that would fit into this potential site. To test this hypothesis and gain further insights into the structural basis of inhibitor binding, we have synthesized and characterized 1-(1H-imidazol-1-yl)-4,4-diphenyl-2-butanone (QC-308). Using a carbon monoxide (CO) formation assay on rat spleen microsomes, the compound was found to be {approx}15 times more potent (IC{sub 50} = 0.27{+-}0.07 {mu}M) than its monophenyl analogue, which is already a potent compound in its own right (QC-65; IC{sub 50} = 4.0{+-}1.8 {mu}M). The crystal structure of hHO-1 with QC-308 revealed that the second phenyl group in the western region of the compound is indeed accommodated by a definitive secondary proximal hydrophobic pocket. Thus, the two phenyl moieties are each stabilized by distinct hydrophobic pockets. This 'double-clamp' binding offers additional inhibitor stabilization and provides a new route for improvement of human heme oxygenase inhibitors.

  5. Laminate articles on biaxially textured metal substrates (Patent...

    Office of Scientific and Technical Information (OSTI)

    O.sub.3 buffer layer over the substrate, wherein 0Ho, Er, Lu, Gd, Tb, Dy, Tm, and Yb. ...

  6. Evolution of Structure-Reactivity Correlations for the Hydrogen Abstraction Reaction by Hydroxyl Radical and Comparison with that by Chlorine Atom

    SciTech Connect (OSTI)

    Poutsma, Marvin L

    2013-01-01

    A structure-reactivity correlation for the reaction (HO + HCR3 HOH + CR3 ) has been formulated: log k298(per H) = 0.000630 rH2 0.151 rH 1.056 F 1.053 R 21.26 (r2 = 0.885; n = 70; mean unsigned deviation = 0.29 log units), where rH is the reaction enthalpy and F and R represent the dissection of Hammett s para constant into its field/inductive and resonance effects, and compared for the analogous case for Cl (ref 1). Although more exothermic, the dependence of HO on rH is somewhat greater than Cl . However the dependence on F and R is much less, suggestive of less charge separation in the transition state for the less electronegative HO . The range of k(OH) is significantly less than that of Cl , i.e., it is less dependent on substrate structure. Yet a cross-over exists such that k(Cl) > k(HO) predominates for more reactive cases whereas k(Cl) < k(OH) characterizes the less reactive. The Arrhenius parameters reveal that this cross-over results from a change in {E(Cl) E(OH)} from negative to positive. In contrast, whereas the A factors for both increase significantly as reactivity increases, {A(Cl) / A(OH)} always exceeds unity.

  7. 5He

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

    1974MAYI: 7Li(polarized p, t), E 43.8 MeV. 5He deduced levels. 1973TR04: 2H(, pd), (, dt), E 70 MeV. Deduced level-width. 5He deduced levels. 1974HO11: 2H(,...

  8. To' File CLASSIFICATION CANCF,LLED

    Office of Legacy Management (LM)

    diamtar by .lW deep on each end' of the slag. .Ibio will amble aocurnte cz&zing of .+.hc slu;E in th6. die, but,, LiftAr cnstdng, the pieoa v-ill ho-m expeod tubloy at encb ad. ...

  9. A=5He (1974AJ01)

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

    1970IR01, 1970RA1D, 1970ZO1A, 1971RA15, 1971WA08, 1972KA38, 1972LE1L, 1973HA49). Cluster calculations: (1965NE1B, 1966HO06, 1967BE1G, 1969ME1C, 1969WI1C, 1971LE1N, 1972DE30)....

  10. A=19O (72AJ02)

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

    EL68, GU68A, HA68H, HA68T, MO68A, FE69C, HO69U, KU69G, MA69N, TA70H, AR71L, WI71B). Cluster, collective and deformed models: (CH63A, FE65B, FE69C). Astrophysical questions:...

  11. Slide 1

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

    ER RI I W Wi in nt te er r S Su ur rf fa ac ce e G Gr re ee en nh ho ou us se e F Fl lu ux xe es s Greenhouse Gas Emission Band (cm -1 ) GL Flux (Wm 2 ) AERI Flux (Wm 2 ) CFC-11...

  12. I

    Office of Legacy Management (LM)

    PloaeO mnrlc all aanhlnore ' f4UC-350"~ The W papers &ould atidy be at the Chicago Offlae. > I ,.I few ' * ) ,. r ho1.r Wart Paper C.P. $23-g (e) cot W. B. Eodln.Chlcago Area ' o--- I

  13. Lightweight high performance ceramic material

    DOE Patents [OSTI]

    Nunn, Stephen D [Knoxville, TN

    2008-09-02

    A sintered ceramic composition includes at least 50 wt. % boron carbide and at least 0.01 wt. % of at least one element selected from the group consisting of Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy Ho, Er, Tm, Yb, and Lu, the sintered ceramic composition being characterized by a density of at least 90% of theoretical density.

  14. EERE Fiscal Year 2013 Website Annual Report

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

    Saver facebook 29 Videos 32 Widgets 35 WEB HOSTING AND CONTENT mANAGEmENT SYSTEmS 28 ... EErE total EnErGy SavEr nEWS Social mEdia multimEdia WEb HoStinG and contEnt manaGEmEnt ...

  15. Modulation of keratinocyte expression of antioxidants by 4-hydroxynonenal, a lipid peroxidation end product

    SciTech Connect (OSTI)

    Zheng, Ruijin; Heck, Diane E.; Mishin, Vladimir; Black, Adrienne T.; Shakarjian, Michael P.; Kong, Ah-Ng Tony; Laskin, Debra L.; Laskin, Jeffrey D.

    2014-03-01

    4-Hydroxynonenal (4-HNE) is a lipid peroxidation end product generated in response to oxidative stress in the skin. Keratinocytes contain an array of antioxidant enzymes which protect against oxidative stress. In these studies, we characterized 4-HNE-induced changes in antioxidant expression in mouse keratinocytes. Treatment of primary mouse keratinocytes and PAM 212 keratinocytes with 4-HNE increased mRNA expression for heme oxygenase-1 (HO-1), catalase, NADPH:quinone oxidoreductase (NQO1) and glutathione S-transferase (GST) A1-2, GSTA3 and GSTA4. In both cell types, HO-1 was the most sensitive, increasing 8698 fold within 6 h. Further characterization of the effects of 4-HNE on HO-1 demonstrated concentration- and time-dependent increases in mRNA and protein expression which were maximum after 6 h with 30 ?M. 4-HNE stimulated keratinocyte Erk1/2, JNK and p38 MAP kinases, as well as PI3 kinase. Inhibition of these enzymes suppressed 4-HNE-induced HO-1 mRNA and protein expression. 4-HNE also activated Nrf2 by inducing its translocation to the nucleus. 4-HNE was markedly less effective in inducing HO-1 mRNA and protein in keratinocytes from Nrf2 ?/? mice, when compared to wild type mice, indicating that Nrf2 also regulates 4-HNE-induced signaling. Western blot analysis of caveolar membrane fractions isolated by sucrose density centrifugation demonstrated that 4-HNE-induced HO-1 is localized in keratinocyte caveolae. Treatment of the cells with methyl-?-cyclodextrin, which disrupts caveolar structure, suppressed 4-HNE-induced HO-1. These findings indicate that 4-HNE modulates expression of antioxidant enzymes in keratinocytes, and that this can occur by different mechanisms. Changes in expression of keratinocyte antioxidants may be important in protecting the skin from oxidative stress. - Highlights: Lipid peroxidation generates 4-hydroxynonenal, a reactive aldehyde. 4-HNE induces antioxidant proteins in mouse keratinocytes. Induction of antioxidant proteins

  16. Neutron and Nuclear Science Publications

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

    Publications Recent publications related to neutron and nuclear science at LANSCE. Neutron and Nuclear Science Publications Chi-Nu Publications DANCE Publications GEANIE Publications ICE House and ICE II Publications (n,z) Publications Neutron Radiography Publications SPIDER Publications Target 2 Publications TPC Publications Links Publications/Media Neutron and Nuclear Science News Profiles Events at LANSCE LANL Research Libary

  17. Search for scalar bottom quarks and third-generation leptoquarks in p p-bar collisions at sqrt(s) = 1.96 TeV

    SciTech Connect (OSTI)

    Abazov, Victor Mukhamedovich; Abbott, Braden Keim; Abolins, Maris A.; Acharya, Bannanje Sripath; Adams, Mark Raymond; Adams, Todd; Aguilo, Ernest; Alexeev, Guennadi D.; Alkhazov, Georgiy D.; Alton, Andrew K.; Alverson, George O.; /Northeastern U. /Rio de Janeiro, CBPF

    2010-05-01

    We report the results of a search for pair production of scalar bottom quarks ({tilde b}{sub 1}) and scalar third-generation leptoquarks (LQ{sub 3}) in 5.2 fb{sup -1} of p{bar p} collisions at the D0 experiment of the Fermilab Tevatron Collider. Scalar bottom quarks are assumed to decay to a neutralino ({tilde {chi}}{sub 1}{sup 0}) and a b quark, and we set 95% C.L. lower limits on their production in the (m{sub {tilde b}{sub 1}}, m{sub {tilde {chi}}{sub 1}{sup 0}}) mass plane such as m{sub {tilde b}{sub 1}} > 247 GeV for m{sub {tilde {chi}}{sub 1}{sup 0}} = 0 and m{sub {tilde {chi}}{sub 1}{sup 0}} > 110 GeV for 160 < m{sub {tilde b}{sub 1}} < 200 GeV. The leptoquarks are assumed to decay to a tau neutrino and a b quark, and we set a 95% C.L. lower limit of 247 GeV on the mass of a charge-1/3 third-generation scalar leptoquark.

  18. Search for: All records | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    ... Guo, Peijun (1) Hao, Yulin (1) Hu, Yan (1) Kai, Ji-Jung (1) Lee, Chi-Hung (1) Leonardi, ... Tsai, Shuo-Cheng ; Huang, E-Wen ; Kai, Ji-Jung ; Chen, Fu-Rong ; NTHU-Taiwan) March 2013 ...

  19. ESnet Update

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

    Italy, UK, etc SNV JGI LBNL SLAC NERSC SNV SDN SDSC Equinix SNV A L B ORNL CHI MREN Netherlands StarTap Taiwan (TANet2, ASCC) NASA Ames AU AU S E A C H I - S L M A N L A N A b i l ...

  20. p

    U.S. Energy Information Administration (EIA) Indexed Site

    Har mon Jackso n Coman che Garvin Hal l Chi ldress Ste phens Tillman Mur ray Har deman Cotton Car ter Wilb arger 600' 8 0 0 ' 4 0 0 ' 1 0 0 ' 1 0 0 ' 4 0 0 ' 200' 1 0 0 ' 6 0 0 ' 2 ...

  1. Search for Pair Production of Supersymmetric Top Quarks in Dilepton Events at the Tevatron

    SciTech Connect (OSTI)

    Johnson, William Casey; /UC, Davis

    2010-05-01

    We search for pair production of the supersymmetric partner of the top quark, the stop quark {tilde t}{sub 1}, decaying to a b-quark and a chargino {tilde {chi}}{sub 1}{sup {+-}} with a subsequent decay into a neutralino {tilde {chi}}{sub 1}{sup 0}, lepton {ell}, and neutrino {nu}. Using 2.7 fb{sup -1} of {radical}s = 1.96 TeV p{bar p} collision data collected by the CDF II experiment, we reconstruct the mass of candidate stop events and fit the observed mass spectrum to a combination of standard model processes and stop signal. No evidence of {tilde t}{sub 1}{tilde {bar 1}}{sub 1} production is found, therefore we set 95% C.L. limits on the masses of the stop and the neutralino for several values of the chargino mass and the branching ratio {Beta} ({tilde {chi}}{sub 1}{sup {+-}} {yields} {tilde {chi}}{sub 1}{sup 0}{ell}{sup {+-}}{nu}).

  2. Search for pair production of scalar top quarks in jets and missing transverse energy channel with the D0 detector

    SciTech Connect (OSTI)

    Shamim, Mansoora; /Kansas State U.

    2008-05-01

    This dissertation describes a search for the pair production of scalar top quarks, {tilde t}{sub 1}, using a luminosity of 995 pb{sup -1} of data collected in p{bar p} collisions with the D0 detector at the Fermilab Tevatron Collider at a center-of-mass energy {radical}s = 1.96 TeV. Both scalar top quarks are assumed to decay into a charm quark and a neutralino, {tilde {chi}}{sub 1}{sup 0}, where {tilde {chi}}{sub 1}{sup 0} is the lightest supersymmetric particle. This leads to a final state with two acoplanar charm jets and missing transverse energy. The yield of such events in data is found to be consistent with the expectations from known standard model processes. Sets of {tilde t}{sub 1} and {tilde {chi}}{sub 1}{sup 0} masses are excluded at the 95% confidence level that substantially extend the domain excluded by previous searches. With the theoretical uncertainty on the {tilde t}{sub 1} pair production cross section taken into account, the largest limit for m{sub {tilde t}{sub 1}} is m{sub {tilde t}{sub 1}} > 150 GeV, for m{sub {tilde {chi}}{sub 1}{sup 0}} = 65 GeV.

  3. Project materials [Commercial High Performance Buildings Project

    SciTech Connect (OSTI)

    2001-01-01

    The Consortium for High Performance Buildings (ChiPB) is an outgrowth of DOE'S Commercial Whole Buildings Roadmapping initiatives. It is a team-driven public/private partnership that seeks to enable and demonstrate the benefit of buildings that are designed, built and operated to be energy efficient, environmentally sustainable, superior quality, and cost effective.

  4. LANSCE-NS thrust areas

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

    Neutron and Nuclear Science (WNR) Facility at LANSCE Semiconductor irradiations (ICE House, ICE II) High resolution gamma-ray measurements following nuclear reactions (GEANIE) Detector development Neutron radiography (FP05) Fission and neutron capture cross sections (TPC, DANCE) Fission fragment measurements (SPIDER) Fission neutron output spectrum measurements (Chi-nu) Neutron-induced Charged Particle Detection (n,z

  5. Susceptibility and Knight-shift anomalies in cuprate superconductors

    SciTech Connect (OSTI)

    Thoma, J.; Tewari, S.; Ruvalds, J.; Rieck, C.T.

    1995-06-01

    The unconventional temperature variation of the static susceptibility {chi}({ital T}) that has been discovered in various copper oxide superconductors is explained in terms of a model density of states that has a step shape at an energy threshold {ital E}{sub 0} along with a logarithmic Van Hove singularity at the same {ital E}{sub 0}. Calculations of {chi}({ital T}) and the Knight shift above the superconducting transition temperature {ital T}{sub {ital c}} yield good fits to the YBCO, BSCCO, and LSCO data by adjusting only the Fermi energy {mu} in correspondence to the oxygen or Sr content, respectively. When {mu} is right on or slightly below the Van Hove singularity, an upturn in {chi} occurs as the temperature {ital T} is lowered. By contrast, when {mu} is slightly above the threshold energy {ital E}{sub 0}, a downturn in {chi} is achieved as {ital T} is lowered. A correlation of these phenomena with experimental data provides insight into the proximity of the Van Hove singularity to {mu} in several cuprate superconductors. The YBCO and TBCO cuprates with the higher {ital T}{sub {ital c}} values exhibit a nearly constant susceptibility that suggests a Fermi energy well removed from the Van Hove singularity. The sensitivity of {ital T}{sub {ital c}} as well as the susceptibility to chemical changes may provide tests of electronic mechanisms of electron pairing as well as the BCS theory.

  6. Search for anomalous production of multi-lepton events in p anti-p collisions at s**(1/2) = 1.96-TeV

    SciTech Connect (OSTI)

    Abulencia, A.; Adelman, Jahred A.; Affolder, T.; Akimoto, T.; Albrow, M.G.; Ambrose, D.; Amerio, S.; Amidei, D.; Anastassov, A.; Anikeev, K.; Annovi, A.; /Taiwan, Inst. Phys. /Argonne /Barcelona, IFAE /Baylor U. /INFN, Bologna /Bologna U. /Brandeis U. /UC, Davis /UCLA /UC, San Diego /UC, Santa Barbara

    2007-01-01

    The authors report a search for the anomalous production of events with multiple charged leptons in p{bar p} collisions at {radical}s = 1.96 TeV using a data sample corresponding to an integrated luminosity of 346 pb{sup -1} collected by the CDF II detector at the Fermilab Tevatron. The search is divided into three-lepton and four-or-more-lepton data samples. They observe six events in the three-lepton sample and zero events in the {ge}4-lepton sample. Both numbers of events are consistent with standard model background expectations. Within the framework of an R-parity violating supergravity model, the results are interpreted as mass limits on the lightest neutralino ({bar {chi}}{sub 1}{sup 0}) and chargino ({bar {chi}}{sub 1}{sup {+-}}) particles. For one particular choice of model parameters, the limits are M({bar {chi}}{sub 1}{sup 0}) > 110 GeV/c{sup 2} and M({bar {chi}}{sub 1}{sup {+-}}) > 203 GeV/c{sup 2} at 95% confidence level; the variation of these mass limits with model parameters is presented.

  7. Search for r-parity violating supersymmetry in multilepton final states with the D0 detector

    SciTech Connect (OSTI)

    Kaefer, Daniela; /Aachen, Tech. Hochsch.

    2006-11-01

    Results obtained from a search for the trilepton signature {mu}{mu}{ell} (with {ell} = e, or {mu}) are combined with two complementary searches for the trilepton signatures ee{ell} and eer and interpreted in the framework of R-parity violating Supersymmetry. Pairwise, R-parity conserving production of the supersymmetric particles is assumed, followed by R-parity violating decays via an LL{bar E}-operator with one dominant coupling {lambda}{sub 122}. An LL{bar E}-operator couples two weak isospin doublet and one singlet (s)lepton fields and thus violates lepton number conservation. The data, collected with the D0 detector at the Fermilab proton-antiproton collider Tevatron, corresponds to an integrated luminosity of {integral} L dt = 360 {+-} 23 pb{sup -1}. No evident is observed, while 0.41 {+-} 0.11(stat) {+-} 0.07(sys) events are expected from Standard Model processes. The resulting 95% confidence level cross section limits on new physics producing a {mu}{mu}{ell} signature in the detector are of the order of 0.020 to 0.136 pb. They are interpreted in two different supersymmetry scenarios: the mSUGRA and the MSSM model. The corresponding lower limits on the masses of the lightest neutralino ({tilde {chi}}{sub 1}{sup 0}) and the lightest chargino ({tilde {chi}}{sub 1}{sup {+-}}) in case of the mSUGRA model are found to be in the range of: mSUGRA, {mu} > 0: M({tilde {chi}}{sub 1}{sup 0}) {approx}> 115-128 GeV and M({tilde {chi}}{sub 1}{sup {+-}}) {approx}> 215-241 GeV; mSUGRA, {mu} < 0: ({tilde {chi}}{sub 1}{sup 0}) {approx}> 101-114 GeV and M({tilde {chi}}{sub 1}{sup {+-}}) {approx}> 194-230 GeV, depending on the actual values of the model parameters: m{sub 0}, m{sub 1/2}, A{sub 0}, tan{beta}, and {mu}. The first and second parameters provide the boundary conditions for the masses of the supersymmetric spin-0 and spin-1/2 particles, respectively, while A{sub 0} gives the universal value for the trilinear couplings at the GUT scale. The parameter tan {beta} denotes

  8. Thermal aging modeling and validation on the Mo containing Fe-Cr-Ni alloys

    SciTech Connect (OSTI)

    Yang, Ying; Tan, Lizhen; Busby, Jeremy T.

    2015-04-01

    Thermodynamics of intermetallic phases in Fe-rich Fe-Cr-Ni-Mo alloys is critical knowledge to understand thermal aging effect on the phase stability of Mo-containing austenitic steels, which subsequently facilitates alloy design/improvement and degradation mitigation of these materials for reactor applications. Among the intermetallic phases, Chi (χ), Laves, and Sigma (σ) are often of concern because of their tendency to cause embrittlement of the materials. The focus of this study is thermal stability of the Chi and Laves phases as they were less studied compared to the Sigma phase. Coupled with thermodynamic modeling, thermal stability of intermetallic phases in Mo containing Fe-Cr-Ni alloys was investigated at 1000, 850 and 700 C for different annealing times. The morphologies, compositions and crystal structures of the precipitates of the intermetallic phases were carefully examined by scanning electron microscopy, electron probe microanalysis, X-ray diffraction, and transmission electron microscopy. Three key findings resulted from this study. First, the Chi phase is stable at high temperature, and with decreasing temperature it transforms into the Laves phase that is stable at low temperature. Secondly, Cr, Mo, Ni are soluble in both the Chi and Laves phases, with the solubility of Mo playing a major role in the relative stability of the intermetallic phases. Thirdly, in situ transformation from Chi phase to Laves phase was directly observed, which increased the local strain field, generated dislocations in the intermetallic phases, and altered the precipitate phase orientation relationship with the austenitic matrix. The thermodynamic models that were developed and validated were then applied to evaluating the effect of Mo on the thermal stability of intermetallic phases in type 316 and NF709 stainless steels.

  9. Search for the Trilepton Signal of the Minimal Supergravity Model in D0 Run II

    SciTech Connect (OSTI)

    Binder, Meta; /Munich U.

    2005-06-01

    A search for associated chargino neutralino pair production is performed in the trilepton decay channel q{bar q} {yields} {tilde {chi}}{sub 1}{sup {+-}} {tilde {chi}}{sub 2}{sup 0} {yields} {ell}{sup {+-}} {nu} {tilde {chi}}{sub 1}{sup 0} {mu}{sup {+-}} {mu}{sup {-+}} {tilde {chi}}{sub 1}{sup 0}, using data collected with the D0 detector at a center-of-mass energy of 1.96 TeV at the Fermilab Tevatron Collider. The data sample corresponds to an integrated luminosity of {approx}300 pb{sup -1}. A dedicated event selection is applied to all samples including the data sample and the Monte Carlo simulated samples for the Standard Model background and the Supersymmetry signal. Events with two muons plus an additional isolated track, replacing the requirement of a third charged lepton in the event, are analyzed. Additionally, selected events must have a large amount of missing transverse energy due to the neutrino and the two {tilde {chi}}{sub 1}{sup 0}. After all selection cuts are applied, 2 data events are found, with an expected number of background events of 1.75 {+-} 0.34 (stat.) {+-} 0.46 (syst.). No evidence for Supersymmetry is found and limits on the production cross section times leptonic branching fraction are set. When the presented analysis is considered in combination with three other decay channels, no evidence for Supersymmetry is found. Limits on the production cross section times leptonic branching fraction are set. A lower chargino mass limit of 117 GeV at 95% CL is then derived for the mSUGRA model in a region of parameter space with enhanced leptonic branching fractions.

  10. Impact of isoprene and HONO chemistry on ozone and OVOC formation in a semirural South Korean forest

    SciTech Connect (OSTI)

    Kim, S.; Kim, S. -Y.; Lee, M.; Shim, H.; Wolfe, G. M.; Guenther, A. B.; He, A.; Hong, Y.; Han, J.

    2015-04-29

    Rapid urbanization and economic development in East Asia in past decades has led to photochemical air pollution problems such as excess photochemical ozone and aerosol formation. Asian megacities such as Seoul, Tokyo, Shanghai, Guangzhou, and Beijing are surrounded by densely forested areas, and recent research has consistently demonstrated the importance of biogenic volatile organic compounds (VOCs) from vegetation in determining oxidation capacity in the suburban Asian megacity regions. Uncertainties in constraining tropospheric oxidation capacity, dominated by hydroxyl radical, undermine our ability to assess regional photochemical air pollution problems. We present an observational data set of CO, NOx, SO2, ozone, HONO, and VOCs (anthropogenic and biogenic) from Taehwa research forest (TRF) near the Seoul metropolitan area in early June 2012. The data show that TRF is influenced both by aged pollution and fresh biogenic volatile organic compound emissions. With the data set, we diagnose HOx (OH, HO2, and RO2) distributions calculated using the University of Washington chemical box model (UWCM v2.1) with near-explicit VOC oxidation mechanisms from MCM v3.2 (Master Chemical Mechanism). Uncertainty from unconstrained HONO sources and radical recycling processes highlighted in recent studies is examined using multiple model simulations with different model constraints. The results suggest that (1) different model simulation scenarios cause systematic differences in HOx distributions, especially OH levels (up to 2.5 times), and (2) radical destruction (HO2 + HO2 or HO2 + RO2) could be more efficient than radical recycling (RO2 + NO), especially in the afternoon. Implications of the uncertainties in radical chemistry are discussed with respect to ozone–VOC–NOx sensitivity and VOC oxidation product

  11. Magnetism and magnetocaloric effect in multicomponent Laves-phase compounds: Study and comparative analysis

    SciTech Connect (OSTI)

    Ćwik, J.

    2014-01-15

    This paper presents a review and results of comparative study of the influence of Gd on some physical properties of (R{sub 0.9}R′{sub 0.1}){sub 1−x}Gd{sub x}Co{sub 2} solid solutions with R=Dy, Ho and R′=Er, Ho and x varied from 0.05 to 0.15. Powder X-ray diffraction analysis performed at room temperature revealed that all studied solid solutions solidify with the formation of a Laves-phase MgCu{sub 2}-type structure (space group Fd−3m). The magnetization behavior and the magnetic transition are analyzed in terms of the Landau theory. The studies of magnetic properties and heat capacity showed that a relatively small Gd addition significantly increases T{sub C} of the compounds. The maximum percentage increase in T{sub C}, namely, ∼43% was observed for (Ho{sub 0.9}Er{sub 0.1}){sub 1−x}Gd{sub x}Co{sub 2}. However, the highest temperature was noted for the (Dy{sub 0.9}Ho{sub 0.1}){sub 0.85}Gd{sub 0.15}Co{sub 2} solid solution; it is T{sub C}=183.4 K. Below the ordering temperature, all samples are ferrimagnetically ordered; at high temperatures, they are Curie–Weiss paramagnets. Moreover, a small Gd addition eliminates the field-induced magnetic transition near T{sub C} and, as consequence, transforms the nature of magnetic transition from the first- to second-order. The magnetocaloric effect has been estimated in terms of both isothermal magnetic entropy and adiabatic temperature changes. The highest adiabatic temperature change ΔT{sub ad}=3 K and highest isothermal entropy change ΔS{sub mag}=12.1 J/kg K were observed for (Ho{sub 0.9}Er{sub 0.1}){sub 0.95}Gd{sub 0.05}Co{sub 2} at ∼90 K in magnetic fields of 2 T and 3 T, respectively. A decrease in the entropy change has been observed with increasing Gd content in all studied samples. The smallest values of ΔS{sub mag} were observed for the (Dy{sub 0.9}Ho{sub 0.1}){sub 1−x}Gd{sub x}Co{sub 2} solid solutions. Under an external field change of from 0 to 3 T, the maximum entropy change for (Dy{sub 0

  12. A=13C (1991AJ01)

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

    91AJ01) (See Energy Level Diagrams for 13C) GENERAL: See also (1986AJ01) and Table Prev. Table 13.4 preview 13.4 [Table of Energy Levels] (in PDF or PS) here. Nuclear models:(1985KW02, 1987KI1C, 1988MI1J, 1988WO04, 1989AM02, 1989PO1K, 1989WO1E, 1990FE01, 1990HO01, 1990VA01). Special states:(1984KO40, 1985GO1A, 1985RO1J, 1985SH24, 1986AN07, 1986XU02, 1987KI1C, 1988KW02, 1988MI1J, 1988RO1R, 1988ZH1B, 1989AM02, 1989OR02, 1989RO03, 1990HO01). Electromagnetic transitions and giant

  13. A=15B (1986AJ01)

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

    6AJ01) (See the Isobar Diagram for 15B) The Q-value of the 48Ca(18O, 51V)15B reaction is -21.768 ± 0.025 MeV, leading to an atomic mass excess of 28969.5 ± 25 keV for 15B (1983HO08) based on the masses of 18O, 48Ca and 51V in (1985WA02). Wapstra adopts 28970 ± 22 keV and we shall also. 15B is then stable with respect to 14B + n by 2.765 MeV. At E(18O) = 108 MeV, dσ/dΩ = 2.0 μb/sr at 5° (1983HO08). The β- decay of 15B has been reported: τ1/2 = 11 ± 1 msec. Upper limits have been set on

  14. A=15C (1986AJ01)

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

    6AJ01) (See Energy Level Diagrams for 15C) GENERAL: See also (1981AJ01) and Table 15.1 [Table of Energy Levels] (in PDF or PS) here. Model calculations:(1983ANZQ, 1984VA06). Electromagnetic transitions:(1980RI06). Complex reactions involving 15C:(1981GR08, 1983BE02, 1983EN04, 1983FR1A, 1983HO08, 1983MA06, 1983OL1A, 1983WI1A, 1984HI1A, 1984HO23). Pion capture and reactions:(1981OS04). Hypernuclei:(1981WA1J, 1982KA1D, 1983DO1B, 1983FE07, 1983KO1V, 1984AS1D). Other topics:(1984PO11). Ground state

  15. Thermal properties of holmium-implanted gold films for a neutrino mass experiment with cryogenic microcalorimeters

    SciTech Connect (OSTI)

    Prasai, K.; Yanardag, S. Basak; Galeazzi, M.; Uprety, Y.; Alves, E.; Rocha, J.; Bagliani, D.; Biasotti, M.; Gatti, F.; Gomes, M. Ribeiro

    2013-08-15

    In a microcalorimetric neutrino mass experiment using the radioactive decay of {sup 163}Ho, the radioactive material must be fully embedded in the microcalorimeter absorber. One option that is being investigated is to implant the radioactive isotope into a gold absorber, as gold is successfully used in other applications. However, knowing the thermal properties at the working temperature of microcalorimeters is critical for choosing the absorber material and for optimizing the detector performance. In particular, it is paramount to understand if implanting the radioactive material in gold changes its heat capacity. We used a bolometric technique to measure the heat capacity of gold films, implanted with various concentrations of holmium and erbium (a byproduct of the {sup 163}Ho fabrication), in the temperature range 70 mK–300 mK. Our results show that the specific heat capacity of the gold films is not affected by the implant, making this a viable option for a future microcalorimeter holmium experiment.

  16. Bagger-Lambert-Gustavsson-motivated Lagrangian formulation for the chiral two-form gauge field in D=6 and M5-branes

    SciTech Connect (OSTI)

    Pasti, Paolo; Tonin, Mario; Samsonov, Igor; Sorokin, Dmitri

    2009-10-15

    We reveal nonmanifest gauge and SO(1,5) Lorentz symmetries in the Lagrangian description of a six-dimensional free chiral field derived from the Bagger-Lambert-Gustavsson model in [P.-M. Ho and Y. Matsuo, J. High Energy Phys. 06 (2008) 105.] and make this formulation covariant with the use of a triplet of auxiliary scalar fields. We consider the coupling of this self-dual construction to gravity and its supersymmetrization. In the case of the nonlinear model of [P.-M. Ho, Y. Imamura, Y. Matsuo, and S. Shiba, J. High Energy Phys. 08 (2008) 014.] we solve the equations of motion of the gauge field, prove that its nonlinear field strength is self-dual and find a gauge-covariant form of the nonlinear action. Issues of the relation of this model to the known formulations of the M5-brane worldvolume theory are discussed.

  17. A=18F (1978AJ03)

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

    8AJ03) (See Energy Level Diagrams for 18F) GENERAL: See also (1972AJ02) and Table 18.10 [Table of Energy Levels] (in PDF or PS). Shell model: (1970FL1A, 1970SA1M, 1972EN03, 1972LE13, 1972PR08, 1973BA1Q, 1973CO03, 1973LA1D, 1973MA1K, 1973MC06, 1973SM1C, 1973VA05, 1974LO04, 1974WA17, 1975BA81, 1975GO1B, 1975SA1F, 1976DE13, 1976SA35, 1976SZ1A, 1977HA33, 1977HO1F, 1977SH11, 1977VA1E). Cluster, collective and deformed models: (1972LI1E, 1972NE1B, 1975GO08, 1975SA1F, 1976SA35, 1977HO1F).

  18. A=6Be (1984AJ01)

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

    4AJ01) (See Energy Level Diagrams for 6Be) GENERAL: See also (1979AJ01) and Table 6.6 [Table of Energy Levels] (in PDF or PS). Model calculations: (1979SH1C, 1981HO23, 1982DE42, 1982HO05, 1982KR1B, 1982NG01, 1982VO01, 1982DE16). Other topics: (1979KO1D, 1983BA3A, 1983NA03). 1. (a) 3He(3He, γ)6Be Qm = 11.489 (b) 3He(3He, p)5Li Qm = 10.90 Eb = 11.489 (c) 3He(3He, 2p)4He Qm = 12.8596 (d) 3He(3He, 3He)3He (e) 3He(3He, pd)3He Qm = -5.4936 (f) 3He(3He, 2p)2H2H Qm = -10.987 (g) 3He(3He, 3p)3H Qm =

  19. A=7Be (1988AJ01)

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

    8AJ01) (See Energy Level Diagrams for 7Be) GENERAL: See also (1984AJ01) and Table 7.7 [Table of Energy Levels] (in PDF or PS) here. Nuclear models: (1983BU1B, 1983FU1D, 1983HO22, 1983PA06, 1984BA53, 1984KA06, 1984WA02, 1985FI1E, 1986FI07, 1986KR12, 1986VA13). Special states: (1982PO12, 1983BU1B, 1983HO22, 1984FI20, 1984WA02, 1985FI1E, 1986FI07, 1986VA13, 1986XU02, 1988KW02). Electromagnetic transitions, giant resonances: (1984KA06, 1985FI1E, 1986FI07, 1986ME13). Astrophysical questions:

  20. Neutron activation analysis of NBS oyster tissue (SRM 1566) and IAEA animal bone (H-5)

    SciTech Connect (OSTI)

    Lepel, E.A.; Laul, J.C.

    1983-10-01

    Data have been presented for 35 elements determined by INAA for NBS oyster tissue (SRM 1566) and for 38 elements determined by INAA and RNAA for IAEA animal bone (H-5). The experimental data showed excellent agreement with published values wherever the comparison exists. Additional trace-element data in the ppb range have been presented for the elements Sc, Sb, Cs, La, Ce, Nd, Sm, Eu, Tb, Dy, Ho, Yb, Lu, Hf, Ta, W and Th in NBS oyster tissue. Also, additional trace-element data for IAEA animal bone (H-5) in the ppb range for the elements Al, Sc, Co, Rb, Cs, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Tm, Yb, lu, Hf, Ta and Th have been presented.

  1. SAND2010-3364C

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

    Copyright © 2010 by ASME Proceedings of ES2010 Energy Sustainability May 17-22, 2010, Phoenix, Arizona ES2010-90040 FREEZE-THAW TESTS OF TROUGH RECEIVERS EMPLOYING A MOLTEN SALT WORKING FLUID Gregory Kolb Sandia National Laboratories Albuquerque, NM, USA Clifford Ho Sandia National Laboratories Albuquerque, NM, USA Brian Iverson Sandia National Laboratories Albuquerque, NM, USA Timothy Moss Sandia National Laboratories Albuquerque, NM, USA Nathan Siegel Sandia National Laboratories Albuquerque,

  2. Publications-PHaSe-EFRC

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

    Publications Publications of 2014 Publications of 2013 Publications of 2012 Publications of 2011 Publications of 2010 Publications of 2009 2015 Last update 30 April 2015. Jung, Jae Woong; Liu, Feng;Russel, Thomas P.; Ho Jo, Won "Anthracene-Based Medium Bandgap Conjugated Polymers for High Performance Polymer Solar Cells Exceeding 8% PCE Without Additive and Annealing Process", Adv. Energy, Mater., [early view], (2015). DOI: 10.1002/aenm.201500065 Karak, Supravat; Page, Zachariah A;

  3. What are the Rare Earths? | The Ames Laboratory

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

    What are the Rare Earths? Rare-earth metals or elements typically include scandium (Sc-21), yttrium (Y-39) and the lanthanides: lanthanum (La-57), cerium (Ce-58), praseodymium (Pr-59), neodymium (Nd-60), promethium (Pm-61), samarium (Sm-62), europium (Eu-63), gadolinium (Gd-64), terbium (Tb-65), dysprosium (Dy-66), holmium (Ho-67), erbium (Er-68), thulium (Tm-69), ytterbium (Yb-70), and lutetium (Lu-71). When alloyed with other metals, the rare-earths can provide enhanced magnetic, strength and

  4. Carbon monoxide alleviates ethanol-induced oxidative damage and inflammatory stress through activating p38 MAPK pathway

    SciTech Connect (OSTI)

    Li, Yanyan; Gao, Chao; Shi, Yanru; Tang, Yuhan; Liu, Liang; Xiong, Ting; Du, Min; Xing, Mingyou; Liu, Liegang; Yao, Ping

    2013-11-15

    Stress-inducible protein heme oxygenase-1(HO-1) is well-appreciative to counteract oxidative damage and inflammatory stress involving the pathogenesis of alcoholic liver diseases (ALD). The potential role and signaling pathways of HO-1 metabolite carbon monoxide (CO), however, still remained unclear. To explore the precise mechanisms, ethanol-dosed adult male Balb/c mice (5.0 g/kg.bw.) or ethanol-incubated primary rat hepatocytes (100 mmol/L) were pretreated by tricarbonyldichlororuthenium (II) dimmer (CORM-2, 8 mg/kg for mice or 20 μmol/L for hepatocytes), as well as other pharmacological reagents. Our data showed that CO released from HO-1 induction by quercetin prevented ethanol-derived oxidative injury, which was abolished by CO scavenger hemoglobin. The protection was mimicked by CORM-2 with the attenuation of GSH depletion, SOD inactivation, MDA overproduction, and the leakage of AST, ALT or LDH in serum and culture medium induced by ethanol. Moreover, CORM-2 injection or incubation stimulated p38 phosphorylation and suppressed abnormal Tnfa and IL-6, accompanying the alleviation of redox imbalance induced by ethanol and aggravated by inflammatory factors. The protective role of CORM-2 was abolished by SB203580 (p38 inhibitor) but not by PD98059 (ERK inhibitor) or SP600125 (JNK inhibitor). Thus, HO-1 released CO prevented ethanol-elicited hepatic oxidative damage and inflammatory stress through activating p38 MAPK pathway, suggesting a potential therapeutic role of gaseous signal molecule on ALD induced by naturally occurring phytochemicals. - Highlights: • CO alleviated ethanol-derived liver oxidative and inflammatory stress in mice. • CO eased ethanol and inflammatory factor-induced oxidative damage in hepatocytes. • The p38 MAPK is a key signaling mechanism for the protective function of CO in ALD.

  5. Efficient holmium:yttrium lithium fluoride laser longitudinally pumped by a semiconductor laser array

    SciTech Connect (OSTI)

    Hemmati, H.

    1987-08-24

    Optical pumping of a holmium:yttrium lithium fluoride (Ho:YLF) crystal with a 790-nm continuous-wave diode-laser array has generated 56 mW of 2.1 ..mu..m laser radiation with an optical-to-optical conversion slope efficiency of 33% while the crystal temperature is held at 77 K. The lasing threshold occurs at 7 mW of input power, and laser operation continues up to a crystal temperature of 124 K.

  6. ARM - Publications: Science Team Meeting Documents

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

    Initial Cloud Properties Derived from GMS Over the Tropical Western Pacific Doelling, D.R., Ho, S.-P., Smith, W.L., Jr., Analytical Services and Materials, Inc.; Minnis, P., National Aeronautics and Space Administration-Langley Research Center Ninth Atmospheric Radiation Measurement (ARM) Science Team Meeting Satellite data are needed to provide measurements of the earth-atmosphere shortwave (SW) albedo, outgoing longwave radiation (OLR), and cloud and surface radiative properties for the

  7. kmh | The Ames Laboratory

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

    kmh Ames Laboratory Profile Kai-ming Ho Distinguished Professor Division of Materials Science & Engineering A502 Zaffarano Phone Number: 515-294-1960 Email Address: kmh@ameslab.gov Ames Laboratory Research Projects: Exploratory Development of Theoretical Methods Photonic Systems Structures and Dynamics in Condensed Systems Surface Structures Far-from-Equilibrium Education: Ph.D. Physics, University of California, Berkeley (thesis advisor: Marvin Cohen), 1978 B.Sc., B.Sc(Sp) University of

  8. JHYoon.pptx

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

    Polar Project & ACP SFA project. Presenter: Jin-Ho Yoon Pacific Northwest National Laboratory NERSC BER Requirements for 2017 September 11-12, 2012 Rockville, MD 1. Project Description ! PI: Philip J. Rasch ! Key Players: Ghan, Easter, Fan, Fast, Ganguly, Liu, Ma, Ovchinnikov, Qian, Singh, Smith, H. Wang, M. Wang, Yoon, Zaveri ! ~ FY13: "Improving the Characterization of Clouds, Aerosols and the Cryosphere in Climate Models" --- Polar project' (multi-lab projects with LALN, LLNL,

  9. New Light on Dark Energy (LBNL Science at the Theater)

    ScienceCinema (OSTI)

    Linder, Eric; Ho, Shirly; Aldering, Greg; Fraiknoi, Andrew

    2011-06-08

    A panel of Lab scientists ? including Eric Linder, Shirly Ho, and Greg Aldering ? along with Andrew Fraiknoi, the Bay Area's most popular astronomy explainer, gathered at the Berkeley Repertory Theatre on Monday, April 25, 2011, for a discussion about "New Light on Dark Energy." Topics will include hunting down Type 1a supernovae, measuring the universe using baryon oscillation, and whether dark energy is the true driver of the universe.

  10. REM Handling Procedures | The Ames Laboratory

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

    REM Handling Procedures Below are recommended handling procedures for the Rare Earth Metals. Keep in mind that these procedures are intended for very high purity metals, and alternative procedures may exist or be better suited to your facilities' capabilities. Please consult with your safety officer(s) before employing any of these procedures. The procedures are grouped by element: La, Ce, Pr & Nd Sc, Y, Gd, Tb, Dy, Ho, Er, Tm and Lu Sm & Yb Eu RECOMMENDED HANDLING PROCEDURES FOR: La,

  11. Probabilistic Analysis of Power Tower Systems to Achieve SunShot Goals

    Office of Scientific and Technical Information (OSTI)

    (Presentation). (Conference) | SciTech Connect Conference: Probabilistic Analysis of Power Tower Systems to Achieve SunShot Goals (Presentation). Citation Details In-Document Search Title: Probabilistic Analysis of Power Tower Systems to Achieve SunShot Goals (Presentation). Abstract not provided. Authors: Ho, Clifford Kuofei ; Mehos, Mark ; Turchi, Craig ; Wagner, Michael Publication Date: 2013-09-01 OSTI Identifier: 1110670 Report Number(s): SAND2013-7783C 474170 DOE Contract Number:

  12. Search for: All records | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    Chan, Ho Bun" Name Name ORCID Product Type: All Book/Monograph Conference/Event Journal Article Miscellaneous Patent Program Document Software Manual Technical Report Thesis/Dissertation Subject: Identifier Numbers: Site: All Alaska Power Administration, Juneau, Alaska (United States) Albany Research Center (ARC), Albany, OR (United States) Albuquerque Complex - NNSA Albuquerque Operations Office, Albuquerque, NM (United States) Amarillo National Resource Center for Plutonium, Amarillo, TX

  13. DNS/LES of Complex Turbulent Flows | Argonne Leadership Computing Facility

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

    Autoignition of a turbulent hydrogen jet injected into hot oxygen Autoignition of a turbulent hydrogen jet injected into hot oxygen. The green isocontours illustrate the turbulent structures in the fuel, the blue isocontours show the HO2 radical (an important precursor to autoignition), and the orange isosurfaces illustrate temperature. Credit: Rajapadiyan Asaithambi and Krishnan Mahesh, University of Minnesota DNS/LES of Complex Turbulent Flows PI Name: Krishnan Mahesh PI Email: mahesh@umn.edu

  14. Software Tools for Analysis of Concentrated Solar Power Technologies

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

    8-8053 Unlimited Release Printed December 2008 Software and Codes for Analysis of Concentrating Solar Power Technologies Clifford K. Ho Prepared by Sandia National Laboratories Albuquerque, New Mexico 87185 and Livermore, California 94550 Sandia is a multiprogram laboratory operated by Sandia Corporation, a Lockheed Martin Company, for the United States Department of Energy's National Nuclear Security Administration under Contract DE-AC04-94AL85000. Approved for public release; further

  15. Indian Country Energy and Infrastructure Working Group

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

    INDIAN COUNTRY ENERGY AND INFRASTRUCTURE WORKING GROUP ICEIWG APPROVED MEMBERS Blue Lake Rancheria  Jana Ganion, BLR Energy Director Confederated Tribes of the Warm Springs Reservation of Oregon  Chief Delvis Health  Jim Manion, General Manager, Warm Springs Power Ewiiaapaayp Band of Kumeyaay Indians  William Micklin, CEO Gila River Indian Community  Robert Stone, District 5 Community Councilman Ho-Chunk Nation  Representative Susan Waukon Mississippi Band of Choctaw Indians

  16. High-Temperature Falling-Particle Receiver

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

    conceptual drawing illustrates a high-temperature falling-particle receiver system that will achieve greater efficiencies and lower costs. Illustration from Sandia National Laboratories Project Leader: Dr. Cliff Ho ckho@sandia.gov Printed with a renewable-source ink on paper containing at least 50% wastepaper, including 10% post consumer waste. eere.energy.gov * energy.gov/sunshot DOE/GO-102012-3672 * September 2012 MOTIVATION Conventional central receiver technologies are limited to

  17. December 2015 Most Viewed Documents for Chemistry | OSTI, US Dept of Energy

    Office of Scientific and Technical Information (OSTI)

    Office of Scientific and Technical Information December 2015 Most Viewed Documents for Chemistry Electrical conductivity measurements of aqueous electrolyte solutions at high temperatures and high pressures Ho, P.C.; Palmer, D.A. (1995) 184 LITERATURE REVIEW OF BORIC ACID SOLUBILITY DATA Crapse, K.; Kyser, E. (2011) 140 Decomposition of calcium sulfate: a review of the literature. [62 refs] Swift, W M; Panek, A F; Smith, G W; Vogel, G J; Jonke, A A (1976) 130 Devices to improve the

  18. July 2013 Most Viewed Documents for Chemistry | OSTI, US Dept of Energy

    Office of Scientific and Technical Information (OSTI)

    Office of Scientific and Technical Information July 2013 Most Viewed Documents for Chemistry Lithium literature review: lithium's properties and interactions Jeppson, D.W.; Ballif, J.L.; Yuan, W.W.; Chou, B.E. (1978) 93 Flammability characteristics of combustible gases and vapors. [249 refs] Zabetakis, M.G. (1964) 68 Electrical conductivity measurements of aqueous electrolyte solutions at high temperatures and high pressures Ho, P.C.; Palmer, D.A. (1995) 61 Determination of NAD+ and NADH

  19. June 2014 Most Viewed Documents for Chemistry | OSTI, US Dept of Energy

    Office of Scientific and Technical Information (OSTI)

    Office of Scientific and Technical Information June 2014 Most Viewed Documents for Chemistry Flammability characteristics of combustible gases and vapors. [249 refs] Zabetakis, M.G. (1964) 41 Vapor-liquid equilibria for nitric acid-water and plutonium nitrate-nitric acid-water solutions Maimoni, A. (1980) 25 Electrical conductivity measurements of aqueous electrolyte solutions at high temperatures and high pressures Ho, P.C.; Palmer, D.A. (1995) 25 Efficient computation of volume of

  20. June 2015 Most Viewed Documents for Chemistry | OSTI, US Dept of Energy

    Office of Scientific and Technical Information (OSTI)

    Office of Scientific and Technical Information June 2015 Most Viewed Documents for Chemistry Electrical conductivity measurements of aqueous electrolyte solutions at high temperatures and high pressures Ho, P.C.; Palmer, D.A. (1995) 101 Vapor-liquid equilibria for nitric acid-water and plutonium nitrate-nitric acid-water solutions Maimoni, A. (1980) 97 Nuclear magnetic resonance measurement of ammonia diffusion in dense solid-liquid slurries. Revision 1 Bobroff, S.; Phillips, R.J. [Univ. of

  1. Most Viewed Documents - Chemistry | OSTI, US Dept of Energy Office of

    Office of Scientific and Technical Information (OSTI)

    Scientific and Technical Information - Chemistry Flammability characteristics of combustible gases and vapors. [249 refs] Zabetakis, M.G. (1964) Electrical conductivity measurements of aqueous electrolyte solutions at high temperatures and high pressures Ho, P.C.; Palmer, D.A. (1995) Aqueous electrolyte modeling in ASPEN PLUS{trademark} Bloomingburg, G.F. [Univ. of Tennessee, Knoxville, TN (United States). Dept. of Chemical Engineering]|[Oak Ridge National Lab., TN (United States)];

  2. Wave-function functionals

    SciTech Connect (OSTI)

    Pan Xiaoyin; Slamet, Marlina; Sahni, Viraht

    2010-04-15

    We extend our prior work on the construction of variational wave functions {psi} that are functionals of functions {chi}:{psi}={psi}[{chi}] rather than simply being functions. In this manner, the space of variations is expanded over those of traditional variational wave functions. In this article we perform the constrained search over the functions {chi} chosen such that the functional {psi}[{chi}] satisfies simultaneously the constraints of normalization and the exact expectation value of an arbitrary single- or two-particle Hermitian operator, while also leading to a rigorous upper bound to the energy. As such the wave function functional is accurate not only in the region of space in which the principal contributions to the energy arise but also in the other region of the space represented by the Hermitian operator. To demonstrate the efficacy of these ideas, we apply such a constrained search to the ground state of the negative ion of atomic hydrogen H{sup -}, the helium atom He, and its positive ions Li{sup +} and Be{sup 2+}. The operators W whose expectations are obtained exactly are the sum of the single-particle operators W={Sigma}{sub i}r{sub i}{sup n},n=-2,-1,1,2, W={Sigma}{sub i{delta}}(r{sub i}), W=-(1/2){Sigma}{sub i{nabla}i}{sup 2}, and the two-particle operators W={Sigma}{sub n}u{sup n},n=-2,-1,1,2, where u=|r{sub i}-r{sub j}|. Comparisons with the method of Lagrangian multipliers and of other constructions of wave-function functionals are made. Finally, we present further insights into the construction of wave-function functionals by studying a previously proposed construction of functionals {psi}[{chi}] that lead to the exact expectation of arbitrary Hermitian operators. We discover that analogous to the solutions of the Schroedinger equation, there exist {psi}[{chi}] that are unphysical in that they lead to singular values for the expectations. We also explain the origin of the singularity.

  3. Doping Experiments on Low-Dimensional Oxides and a Search for Unusual Magnetic Properties of MgAlB14

    SciTech Connect (OSTI)

    Julienne Marie Hill

    2002-12-31

    Doping experiments on La{sub 2}CuO{sub 4}, Sr{sub 2}CuO{sub 3} and SrCu{sub 2}(BO{sub 3}){sub 2} were performed with the intent of synthesizing new metallic low-=dimensional cuprate oxide compounds. Magnetic susceptibility {chi}(T) measurements on a polycrystalline La{sub 2}CuO{sub 4} sample chemically oxidized at room temperature in aqueous NaClO showed superconductivity with a superconducting transition temperature T{sub c} of 42.6 K and a Meissner fraction of 26%. They were unable to electrochemically oxidize La{sub 2}CuO{sub 4} in a nonaqueous solution of tetramethylammonium hydroxide (TMAOH) and methanol. Sr{sub 2}CuO{sub 3} was found to decompose upon exposure to air and water. Electron paramagnetic resonance, isothermal magnetization M(H), and {chi}(T) measurements on the primary decomposition product, Sr{sub 2}Cu(OH){sub 6}, were consistent with a nearly isolated, spin S = 1/2, local moment model for the Cu{sup +2} spins. From a fit of {chi}(T) by the Curie-Weiss law and of the M(H) isotherms by a modified Brillouin function, the weakly antiferromagnetic exchange interaction between adjacent Cu{sup +2} spins in Sr{sub 2}Cu(OH){sub 6} was found to be J/k{sub B} = 1.06(4) K. Doping studies on SrCu{sub 2}(BO{sub 3}){sub 2} were inconclusive. {chi}(T) measurements on an undoped polycrystalline sample of SrCu{sub 2}(BO{sub 3}){sub 2}, a sample treated with distilled water, and a sample treated with aqueous NaClO showed no qualitative differences between the samples. In addition, {chi}(T) and M(H, T) studies of the ultra-hard material MgAlB{sub 14} were carried out in search of superconductivity or ferromagnetism in this compound. {chi}(T) measurements on a powder sample revealed temperature-independent diamagnetism from 1.8 K up to room temperature with a Curie-Weiss impurity concentration equivalent to {approx} 1 mol% of spin-1/2 ions. In contrast, M(H, T) data on hot pressed samples showed evidence of ferromagnetic transitions above {approx} 330 K. Scanning

  4. A safety equipment list for rotary mode core sampling systems operation in single shell flammable gas tanks

    SciTech Connect (OSTI)

    SMALLEY, J.L.

    1999-05-18

    This document identifies all interim safety equipment to be used for rotary mode core sampling of single-shell flammable gas tanks utilizing Rotary Mode Core Sampling systems (RMCS). This document provides the safety equipment for RMCS trucks HO-68K-4600, HO-68K-4647, trucks three and four respectively, and associated equipment. It is not intended to replace or supersede WHC-SD-WM-SEL-023, (Kelly 1991), or WHC-SD-WM-SEL-032, (Corbett 1994), which classifies 80-68K-4344 and HO-68K-4345 respectively. The term ''safety equipment'' refers to safety class (SC) and safety significant (SS) equipment, where equipment refers to structures, systems and components (SSC's). The identification of safety equipment in this document is based on the credited design safety features and analysis contained in the Authorization Basis (AB) for rotary mode core sampling operations in single-shell flammable gas tanks. This is an interim safety classification since the AB is interim. This document will be updated to reflect the final RMCS equipment safety classification designations upon completion of a final AB which will be implemented with the release of the Final Safety Analysis Report (FSAR).

  5. Twofold enhancement of the hidden-order/large-moment antiferromagnetic phase boundary in the URu2-xFexSi₂ system

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

    Kanchanavatee, N.; Janoschek, M.; Baumbach, R. E.; Hamlin, J. J.; Zocco, D. A.; Huang, K.; Maple, M. B.

    2011-12-16

    Electrical resistivity, specific heat, and magnetization measurements on URu2-xFexSi₂ reveal a twofold enhancement of the “hidden-order” (HO)/large-moment antiferromagnetic (LMAFM) phase boundary T₀(x). The T₀(Pch) curve, obtained by converting x to “chemical pressure” Pch, is strikingly similar to the T₀(P) curve, where P is applied pressure, for URu₂Si₂ both exhibit a “kink” at 1.5 GPa and a maximum at ~7 GPa. This similarity suggests that the HO-LMAFM transition at 1.5 GPa in URu₂Si₂ occurs at x ≈ 0.2 (Pch≈1.5 GPa) in URu2-xFexSi₂. URu2-xFexSi₂ provides an opportunity for studying the HO and LMAFM phases with methods that probe the electronic structure [e.g.,more » scanning tunneling microscopy (STM), angle-resolved photoemission spectroscopy (ARPES), and point-contact spectroscopy (PCS)] but cannot be used under pressure.« less

  6. Acceptance test report for core sample trucks 3 and 4

    SciTech Connect (OSTI)

    Corbett, J.E.

    1996-04-10

    The purpose of this Acceptance Test Report is to provide documentation for the acceptance testing of the rotary mode core sample trucks 3 and 4, designated as HO-68K-4600 and HO-68K-4647, respectively. This report conforms to the guidelines established in WHC-IP-1026, ``Engineering Practice Guidelines,`` Appendix M, ``Acceptance Test Procedures and Reports.`` Rotary mode core sample trucks 3 and 4 were based upon the design of the second core sample truck (HO-68K-4345) which was constructed to implement rotary mode sampling of the waste tanks at Hanford. Successful completion of acceptance testing on June 30, 1995 verified that all design requirements were met. This report is divided into four sections, beginning with general information. Acceptance testing was performed on trucks 3 and 4 during the months of March through June, 1995. All testing was performed at the ``Rock Slinger`` test site in the 200 West area. The sequence of testing was determined by equipment availability, and the initial revision of the Acceptance Test Procedure (ATP) was used for both trucks. Testing was directed by ICF-KH, with the support of WHC Characterization Equipment Engineering and Characterization Project Operations. Testing was completed per the ATP without discrepancies or deviations, except as noted.

  7. Neutron and resonant x-ray scattering studies of RNi{sub 2}B{sub 2}C (R = rare earth) single crystals

    SciTech Connect (OSTI)

    Stassis, C.; Goldman, A.I. |

    1996-06-01

    This family of intermetallic compounds is ideal for the study of the interplay between superconductivity and magnetism since, in several of these compounds (Ho, Er, Tm, Dy), superconductivity coexists with magnetic ordering. The most important findings of the scattering studies are (a) in the Ho-compound, a complex magnetic structure characterized by two incommensurate wave vectors, {rvec k}{sub a} = 0.585 {rvec a}* and {rvec k}{sub c} = 0.915 {rvec c}*, exists in the vicinity of 5 K, where the almost reentrant behavior of this compound occurs; (b) an incommensurate magnetic structure with wave vector along {rvec a}*, close to the zone boundary, is observed in several of these compounds; and (c) pronounced soft-phonon behavior was observed for both the acoustic and first optical {Delta}{sub 4}[{xi}00] branches in the superconducting Lu and Ho compounds, a behavior characteristic of strongly coupled conventional superconductors. Furthermore, these phonon anomalies occur at wave vectors close to those of the incommensurate magnetically ordered structures observed in the magnetic compounds of this family. This observation suggests that both the magnetic ordering and phonon softening originate from common nesting features of the Fermi surfaces of these compounds. Band theoretical calculations are in qualitative agreement with these results.

  8. Characterization of Chitin and Chitosan Molecular Structure in Aqueous Solution

    SciTech Connect (OSTI)

    Franca, Eduardo D.; Lins, Roberto D.; Freitas, Luiz C.; Straatsma, t. P.

    2008-11-08

    Molecular dynamics simulations have been used to characterize the structure of chitin and chitosan fibers in aqueous solutions. Chitin fibers, whether isolated or in the form of a β-chitin nanoparticle, adopt the so-called 2-fold helix with Φ and φ values similar to its crystalline state. In solution, the intramolecular hydrogen bond HO3(n)•••O5(n+1) responsible for the 2-fold helical motif is stabilized by hydrogen bonds with water molecules in a well-defined orientation. On the other hand, chitosan can adopt five distinct helical motifs and its conformational equilibrium is highly dependent on pH. The hydrogen bond pattern and solvation around the O3 atom of insoluble chitosan (basic pH) are nearly identical to these quantities in chitin. Our findings suggest that the solubility and conformation of these polysaccharides are related to the stability of the intrachain HO3(n)•••O5(n+1) hydrogen bond, which is affect by the water exchange around the O3-HO3 hydroxyl group.

  9. Impact of isoprene and HONO chemistry on ozone and OVOC formation in a semirural South Korean forest

    SciTech Connect (OSTI)

    Kim, Saewung; Kim, So-Young; Lee, Meehye; Shim, Heeyoun; Wolfe, Glenn; Guenther, Alex B.; He, Amy; Hong, Youdeog; Han, Jinseok

    2014-01-01

    Rapid urbanization and economic development in East Asia in past decades has led to photochemical air pollution problems such as excess photochemical ozone and aerosol formation. Asian megacities such as Seoul, Tokyo, Shanghai, Gangzhou, and Beijing are surrounded by densely forested areas and recent research has consistently demonstrated the importance of biogenic volatile organic compounds from vegetation in determining oxidation capacity in the suburban Asian megacity regions. Uncertainties in constraining tropospheric oxidation capacity, dominated by hydroxyl radical concentrations, undermine our ability to assess regional photochemical air pollution problems. We present an observational dataset of CO, NOX, SO2, ozone, HONO, and VOCs (anthropogenic and biogenic) from Taehwa Research Forest (TRF) near the Seoul Metropolitan Area (SMA) in early June 2012. The data show that TRF is influenced both by aged pollution and fresh BVOC emissions. With the dataset, we diagnose HOx (OH, HO2, and RO2) distributions calculated with the University of Washington Chemical Box Model (UWCM v 2.1). Uncertainty from unconstrained HONO sources and radical recycling processes highlighted in recent studies is examined using multiple model simulations with different model constraints. The results suggest that 1) different model simulation scenarios cause systematic differences in HOX distributions especially OH levels (up to 2.5 times) and 2) radical destruction (HO2+HO2 or HO2+RO2) could be more efficient than radical recycling (HO2+NO) especially in the afternoon. Implications of the uncertainties in radical chemistry are discussed with respect to ozone-VOC-NOX sensitivity and oxidation product formation rates. Overall, the VOC limited regime in ozone photochemistry is predicted but the degree of sensitivity can significantly vary depending on the model scenarios. The model results also suggest that RO2 levels are positively correlated with OVOCs production that is not routinely

  10. Methyltrihydroborate complexes of the lanthanides and actinides

    SciTech Connect (OSTI)

    Shinomoto, R.S.

    1984-11-01

    Reaction of MC1/sub 4/ (M = Zr, Hf, U, Th, Np) with LiBH/sub 3/CH/sub 3/ in chlorobenzene produces volatile, hexane-soluble M(BH/sub 3/CH/sub 3/)/sub 4/. Crystal structures are monomeric, tetrahedral species. Lewis base adducts prepared include U(BH/sub 3/CH/sub 3/)/sub 4/.THT, Th(BH/sub 3/CH/sub 3/)/sub 4/.L (L = THF (tetrahydrofuran), THT (tetrahydrothiophene), SMe/sub 2/, OMe/sub 2/), U(BH/sub 3/CH/sub 3/)/sub 4/.2L (L = THF, pyridine, NH/sub 3/), Th(BH/sub 3/CH/sub 3/)/sub 4/.2L (L = THF, THT, py, NH/sub 3/), M(BH/sub 3/CH/sub 3/)/sub 4/.L-L (M = U, Th; L-L = dme (1,2-dimethoxyethane), bmte (bis(1,2-methylthio)ethane), tmed (N,N,N',N'-tetramethylethylenediamine), dmpe (1,2-dimethylphosphinoethane)) and Th(BH/sub 3/CH/sub 3/)/sub 4/.1/2 OEt/sub 2/. Reaction of MC1/sub 3/ (M = Ho, Yb, Lu) with LiBH/sub 3/CH/sub 3/ in diethyl ether produces volatile, toluene-soluble M(BH/sub 3/CH/sub 3/)/sub 3/.OEt/sub 2/. Other Lewis base adducts prepared from M(BH/sub 3/CH/sub 3/)/sub 3/.OEt/sub 2/ include Ho(BH/sub 3/CH/sub 3/)/sub 3/.L (L = THT, THF, py), Ho(BH/sub 3/CH/sub 3/)/sub 3/.2L (L = THT, THF, py), Ho(BH/sub 3/CH/sub 3/)/sub 3/.tmed, Ho(BH/sub 3/CH/sub 3/)/sub 3/.3/2 L-L (L-L = dmpe, bmte), Yb(BH/sub 3/CH/sub 3/)/sub 3/.3/2 dmpe, Yb(BH/sub 3/Ch/sub 3/).L (L = THF, dme), Yb(BH/sub 3/CH/sub 3/)/sub 3/.2THF, and Lu(BH/sub 3/CH/sub 3/)/sub 3/.THF. By structural criteria, the bonding in actinide and lanthanide methyltrihydroborate complexes is primarily ionic in character even though they display covalent-like physical properties. Spectroscopic measurements indicate that there is some degree of covalent bonding in U(BH/sub 3/CH/sub 3/)/sub 4/.

  11. Precise predictions for chargino and neutralino pair production in e{sup +}e{sup -} annihilation

    SciTech Connect (OSTI)

    Oeller, W.; Eberl, H.; Majerotto, W.

    2005-06-01

    We present a high precision calculation of chargino and neutralino pair production at e{sup +}e{sup -} colliders. Within the minimal supersymmetric standard model, the full one-loop and higher order QED corrections are included. Special care has been taken in the definition of the Lagrangian input parameters. Furthermore, the proper inclusion of QED corrections and the separation of weak and QED corrections are discussed. We show numerical results for total cross sections, as well as forward-backward and left-right asymmetries for the SPS1a' scenario as proposed in the SPA (supersymmetry parameter analysis) project. The complete corrections are about 10% and in some cases even larger, in particular, for {chi}-tilde{sub i}{sup 0}{chi}-tilde{sub j}{sup 0} production with sizable Higgsino components. These corrections have to be taken into account in a high precision analysis.

  12. Theorems on tessellations by polygons

    SciTech Connect (OSTI)

    Gerver, M L

    2003-06-30

    What general regularity manifests itself in the fact that a triangle, and in general any convex polygon, cannot be tessellated by non-convex quadrangles? Another question: it is known that for n>6 the plane cannot be tessellated by convex n-gons if their diameters are bounded, while the areas are separated from zero; can this fact be generalized for non-convex polygons? In the present paper we introduce the characteristic {chi}(M) of a polygon M. We answer the above questions in terms of {chi}(M) and then study tessellations of the plane by n-gons equivalent to M, that is, with the same sequence of angles greater than and smaller than {pi}.

  13. Two energy scales and slow crossover in YbAl3

    SciTech Connect (OSTI)

    Lawrence, J.M.; Ebihara, T.; Riseborough, P.S.; Booth, C.H.; Pagliuso, P.G.; Sarrao, J.L.; Thompson, J.D.

    2002-01-15

    We present results for YbAl{sub 3} which show that the susceptibility {chi}(T), 4f occupation number n{sub f}(T) and the entropy S(T) exhibit a slow crossover between the Fermi liquid and local moment regimes. In addition both {chi}(T) and the linear specific heat coefficient {gamma} = C/T exhibit low temperature peaks that imply that in addition to the Kondo scale (T{sub K} {approx} 500K) there is a second low temperature scale (T{sub coh} {approx} 50K) for the onset of coherence. We discuss these results in the context of Nozieres' exhaustion in the Anderson lattice.

  14. Nonlinear-optical and structural properties of nanocrystalline silicon carbide films

    SciTech Connect (OSTI)

    Brodyn, M. S.; Volkov, V. I. Lyakhovetskii, V. R.; Rudenko, V. I.; Puzilkov, V. M.; Semenov, A. V.

    2012-02-15

    The aim of this study is to investigate the nonlinearity of refraction in nanostructured silicon carbide films depending on their structural features (synthesis conditions for such films, substrate temperature during their deposition, concentration of the crystalline phase in the film, Si/C ratio of atomic concentrations in the film, and size of SiC nanocrystals formed in the film). The corresponding dependences are obtained, as well as the values of nonlinear-optical third-order susceptibility {chi}{sup (3)}({omega}; {omega}, -{omega}, {omega}) for various silicon polytypes (3C, 21R, and 27R) which exceed the value of {chi}{sup (3)} in bulk silicon carbide single crystals by four orders of magnitude.

  15. Color neutrality effects in the phase diagram of the Polyakov--Nambu--Jona-Lasinio model

    SciTech Connect (OSTI)

    Dumm, D. Gomez; Blaschke, D. B.; Grunfeld, A. G.; Scoccola, N. N.

    2008-12-01

    The phase diagram of a two-flavor Polyakov-loop Nambu-Jona-Lasinio model is analyzed imposing the constraint of color charge neutrality. The main effect of this constraint is a coexistence of the chiral symmetry breaking ({chi}SB) and two-flavor superconducting phases. Additional effects are a shrinking of the {chi}SB domain in the T-{mu} plane and a shift of the end point to lower temperatures, but their quantitative importance is shadowed by the intrinsic uncertainties of the model. The effects can be understood in view of the presence of a nonvanishing color chemical potential {mu}{sub 8}, which is introduced to compensate the color charge density {rho}{sub 8} induced by a background color gauge mean field {phi}{sub 3}. At low temperatures and large chemical potentials the model exhibits a quarkyonic phase, which gets additional support from the diquark condensation.

  16. Giant structures called plasmoids could simplify the design of future

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

    tokamaks | Princeton Plasma Physics Lab Giant structures called plasmoids could simplify the design of future tokamaks By Raphael Rosen June 2, 2015 Tweet Widget Google Plus One Share on Facebook Left: Plasmoid formation in simulation of NSTX plasma during CHI / Right: Fast-camera image of NSTX plasma shows two discrete plasmoid-like bubble structures. (Photo by Left: Fatima Ebrahimi, PPPL / Right: Nishino-san, Hiroshima University) Left: Plasmoid formation in simulation of NSTX plasma

  17. Giant structures called plasmoids could simplify the design of future

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

    tokamaks | Princeton Plasma Physics Lab Giant structures called plasmoids could simplify the design of future tokamaks By Raphael Rosen June 2, 2015 Tweet Widget Google Plus One Share on Facebook Left: Plasmoid formation in simulation of NSTX plasma during CHI / Right: Fast-camera image of NSTX plasma shows two discrete plasmoid-like bubble structures. (Photo by Left: Credit Fatima Ebrahimi, PPPL / Right: Credit Nishino-san, Hiroshima University) Left: Plasmoid formation in simulation of

  18. Microsoft PowerPoint - Cover-v1 [Compatibility Mode]

    National Nuclear Security Administration (NNSA)

    Advances in Matter Under Extreme Conditions HPCAT Workshop Report October 10-12, 2012 Office of Science Advances in Matter under Extreme Conditions HPCAT Workshop Report October 10-12, 2012 Organizing Committee: Thomas Duffy (Princeton University) David Funk (Los Alamos National Laboratory) Chi-chang Kao (SLAC National Accelerator Laboratory) Christian Mailhiot (Lawrence Livermore National Laboratory) Guoyin Shen (Carnegie Institution Washington) Choong-shik Yoo (Washington State University)

  19. SSRL HEADLINES February 2012

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

    Increasing Catalysis Capabilities at SSRL Chi-Chang Kao With each passing week, SSRL's five-to-ten year strategic goals are becoming increasingly well defined. Previous columns have presented our plans for Materials Science and Outreach and Support Efforts; in this column, we cover our goals for catalysis research at the light source. Catalysis is the essential mechanism for directing and accelerating chemical reactions. The development of efficient and selective catalysts is key to enabling use

  20. September 2013 Most Viewed Documents for Geosciences | OSTI, US Dept of

    Office of Scientific and Technical Information (OSTI)

    Energy Office of Scientific and Technical Information September 2013 Most Viewed Documents for Geosciences Fundamental Research on Percussion Drilling: Improved rock mechanics analysis, advanced simulation technology, and full-scale laboratory investigations Michael S. Bruno (2005) 35 Seismic design evaluation guidelines for buried piping for the DOE HLW Facilities Lin, Chi-Wen [Consultant, Martinez, CA (United States)]; Antaki, G. [Westinghouse Savannah River Co., Aiken, SC (United

  1. September 2015 Most Viewed Documents for Geosciences | OSTI, US Dept of

    Office of Scientific and Technical Information (OSTI)

    Energy Office of Scientific and Technical Information September 2015 Most Viewed Documents for Geosciences Drilling and coring methods that minimize the disturbance of cuttings, core, and rock formation in the unsaturated zone, Yucca Mountain, Nevada Hammermeister, D.P.; Blout, D.O.; McDaniel, J.C. (1985) 72 Seismic design evaluation guidelines for buried piping for the DOE HLW Facilities Lin, Chi-Wen [Consultant, Martinez, CA (United States)]; Antaki, G. [Westinghouse Savannah River Co.,

  2. Ab initio study of the linear and nonlinear optical properties of chalcopyrite CdGeAs{sub 2}

    SciTech Connect (OSTI)

    Yu You; Zhao Beijun; Zhu Shifu; Gao Tao; Hou Haijun; He Zhiyu

    2012-01-15

    We present an ab initio theoretical study of the electronic, linear and nonlinear optical properties of CdGeAs{sub 2} using a pseudopotential plane-wave method. Specifically, we evaluate the band structure, density of states, charge density, the dielectric function {epsilon}({omega}) and the second harmonic generation response susceptibility {chi}{sub 312}{sup (2)}(-2{omega};{omega},{omega}) over a large frequency range. As LDA underestimates the band gap, we have applied the GW approximation method to calculate the quasiparticle band structure and obtain an energy band gap in agreement with experiment. In this case the opening of the gap due to the GW correction can be used as scissor shift to calculate the linear and nonlinear optical properties. The intra- and inter-band contributions to the imaginary part of {chi}{sub 312}{sup (2)}(-2{omega};{omega},{omega}) are presented over a broad energy range. It is found that the small energy gap semiconductor CdGeAs{sub 2} has larger values of {epsilon}{sub 1}(0) and {chi}{sub 312}{sup (2)}(0) than other chalcopyrite structures. - Graphical abstract: Calculated total imaginary part of {chi}{sub 312}{sup (2)}(-2{omega};{omega},{omega}) spectra along with the intra-(2{omega})/(1{omega}) and inter-(2{omega})/(1{omega}) band contributions. Highlights: Black-Right-Pointing-Pointer We find that the charge density around the cation Cd of CdGeAs{sub 2} is spherical. Black-Right-Pointing-Pointer We do not have to rely on experimental gap to determine the self-energy. Black-Right-Pointing-Pointer It is the first time we have calculated the SHG susceptibility using pseudopotential plane-wave. Black-Right-Pointing-Pointer The SHG susceptibility beyond zero frequency was calculated.

  3. SSRL HEADLINES September 2010

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

    3 September, 2010 ____________________________________________________________________________ Contents of this Issue: Message from SSRL's New Director Chi-Chang Kao Science Highlight - Obtaining Higher Resolution X-ray Microscopy Images Depends on Reference Shape Science Highlight - Structural Basis for Recognition of a Receptor to Its Signal Protein and to a Viral Homologue Register Now for the LCLS/SSRL Users' Meeting & Workshops, Oct 17-21, 2010 Suncat: Working to Catalyze Energy

  4. Delta ferrite-containing austenitic stainless steel resistant to the formation of undesirable phases upon aging

    DOE Patents [OSTI]

    Leitnaker, James M.

    1981-01-01

    Austenitic stainless steel alloys containing delta ferrite, such as are used as weld deposits, are protected against the transformation of delta ferrite to sigma phase during aging by the presence of carbon plus nitrogen in a weight percent 0.015-0.030 times the volume percent ferrite present in the alloy. The formation of chi phase upon aging is controlled by controlling the Mo content.

  5. Delta ferrite-containing austenitic stainless steel resistant to the formation of undesirable phases upon aging

    DOE Patents [OSTI]

    Leitnaker, J.M.

    Austenitic stainless steel alloys containing delta ferrite, such as are used as weld deposits, are protected against the transformation of delta ferrite to sigma phase during aging by the presence of carbon plus nitrogen in a weight percent 0.015 to 0.030 times the volume percent ferrite present in the alloy. The formation of chi phase upon aging is controlled by controlling the Mo content.

  6. Dark Matter in Supersymmetric U(1){sub B-L} Model

    SciTech Connect (OSTI)

    Khalil, S.; Okada, H.

    2009-04-17

    We analyze the dark matter problem in the context of supersymmetric, U(1){sub B-L} model. In this model, the lightest neutalino can be B-L gaugino Z-tilde{sub B-L} or Higgsinos {chi}-tilde{sub 1,2} dominated. We examine the thermal relic abundance of these particles and discuss the prospects for their direct detection if they form part of our galactic halo.

  7. April 2013 Most Viewed Documents for Geosciences | OSTI, US Dept of Energy

    Office of Scientific and Technical Information (OSTI)

    Office of Scientific and Technical Information April 2013 Most Viewed Documents for Geosciences Sloshing analysis of viscous liquid storage tanks Uras, R.Z. (1995) 83 Seismic design evaluation guidelines for buried piping for the DOE HLW Facilities Lin, Chi-Wen [Consultant, Martinez, CA (United States)]; Antaki, G. [Westinghouse Savannah River Co., Aiken, SC (United States)]; Bandyopadhyay, K. [Brookhaven National Lab., Upton, NY (United States)]; Bush, S.H. [Review & Synthesis

  8. July 2013 Most Viewed Documents for Geosciences | OSTI, US Dept of Energy

    Office of Scientific and Technical Information (OSTI)

    Office of Scientific and Technical Information July 2013 Most Viewed Documents for Geosciences Seismic design evaluation guidelines for buried piping for the DOE HLW Facilities Lin, Chi-Wen [Consultant, Martinez, CA (United States)]; Antaki, G. [Westinghouse Savannah River Co., Aiken, SC (United States)]; Bandyopadhyay, K. [Brookhaven National Lab., Upton, NY (United States)]; Bush, S.H. [Review & Synthesis Association, Richland, WA (United States)]; Costantino, C. [City Univ. of New

  9. Thermal stability of intermetallic phases in Fe-rich Fe-Cr-Ni-Mo alloys

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

    Yang, Ying; Tan, Lizhen; Busby, Jeremy T.

    2015-06-12

    Understanding the stability of precipitate phases in the Fe-rich Fe-Cr-Ni-Mo alloys is critical to the alloy design and application of Mo-containing Austenitic steels. Coupled with thermodynamic modeling, stability of the chi and Laves phases in two Fe-Cr-Ni-Mo alloys were investigated at 1000, 850 and 700 °C for different annealing time. The morphologies, compositions and crystal structures of the matrix and precipitate phases were carefully examined by Scanning Electron Microscopy, Electron Probe Microanalysis, X-ray diffraction and Transmission Electron Microscopy. The two key findings resulted from this work. One is that the chi phase is stable at high temperature and transformed intomore » the Laves phase at low temperature. The other is that both the chi and Laves phases have large solubilites of Cr, Mo and Ni, among which the Mo solubility has a major role on the relative stability of the precipitate phases. The developed thermodynamic models were then applied to evaluating the Mo effect on the stability of precipitate phases in AISI 316 and NF709 alloys.« less

  10. Search for Heavy, Long-Lived Neutralinos that Decay to Photons at CDF II Using Photon Timing

    SciTech Connect (OSTI)

    Aaltonen, T.; Adelman, J.; Akimoto, T.; Albrow, M.G.; Alvarez Gonzalez, B.; Amerio, S.; Amidei, D.; Anastassov, A.; Annovi, A.; Antos, J.; Aoki, M.; /Illinois U., Urbana /Fermilab

    2008-04-01

    The authors present the results of the first hadron collider search for heavy, long-lived neutralinos that decay via {tilde {chi}}{sub 1}{sup 0} {yields} {gamma}{tilde G} in gauge-mediated supersymmetry breaking models. Using an integrated luminosity of 570 {+-} 34 pb{sup -1} of p{bar p} collisions at {radical}s = 1.96 TeV, they select {gamma}+jet+missing transverse energy candidate events based on the arrival time of a high-energy photon at the electromagnetic calorimeter as measured with a timing system that was recently installed on the CDF II detector. They find 2 events, consistent with the background estimate of 1.3 {+-} 0.7 events. While the search strategy does not rely on model-specific dynamics, they set cross section limits and place the world-best 95% C.L. lower limit on the {tilde {chi}}{sub 1}{sup 0} mass of 101 GeV/c{sup 2} at {tau}{sub {tilde {chi}}{sub 1}{sup 0}} = 5 ns.

  11. Solenoid-free Plasma Startup in NSTX using Coaxial Helicity Injection

    SciTech Connect (OSTI)

    Roger Raman; Thomas R. Jarboe; Michael G. Bell; Dennis Mueller; Brian A. Nelson; Benoit LeBlanc; Charles Bush; Masayoshi Nagata; Ted Biewer

    2005-01-03

    The favorable properties of the Spherical Torus (ST) arise from its very small aspect ratio. However, small aspect ratio devices have very restricted space for a substantial central solenoid. Thus methods for initiating the plasma current without relying on induction from a central solenoid are essential for the viability of the ST concept. Coaxial Helicity Injection (CHI) is a promising candidate for solenoid-free plasma startup in a ST. Recent experiments on the HIT-II ST at the University of Washington, have demonstrated the capability of a new method, referred to as transient CHI, to produce a high quality, closed-flux equilibrium that has then been coupled to induction, with a reduced requirement for transformer flux [R. Raman, T.R. Jarboe, B.A. Nelson, et al., Phys. Rev. Lett. 90 (February 2003) 075005-1]. An initial test of this method on the National Spherical Torus Experiment (NSTX) has produced about 140 kA of toroidal current. Modifications are now underway to improve capability for transient CHI in NSTX.

  12. TECHNOLOGY DEVELOPMENT FOR IRON AND COBALT FISCHER-TROPSCH CATALYSTS

    SciTech Connect (OSTI)

    Burtron H. Davis

    1999-04-30

    The impact of activation procedure on the phase composition of precipitated iron Fischer-Tropsch (FT) catalysts has been studied. Catalyst samples taken during activation and FT synthesis have been characterized by Moessbauer spectroscopy. Formation of iron carbide is necessary for high FT activity. Hydrogen activation of precipitated iron catalysts results in reduction to predominantly metallic iron and Fe{sub 3}O{sub 4}. Metallic iron is not stable under FT 3 4 conditions and is rapidly converted to {epsilon}{prime}-Fe{sub 2.2}C. Activation with carbon monoxide or syngas 2.2 with low hydrogen partial pressure reduces catalysts to {chi}-Fe{sub 5}C{sub 2} and a small amount of 5 2 superparamagnetic carbide. Exposure to FT conditions partially oxidizes iron carbide to Fe{sub 3}O{sub 4}; however, catalysts promoted with potassium or potassium and copper maintain a constant carbide content and activity after the initial oxidation. An unpromoted iron catalyst which was activated with carbon monoxide to produce 94% {chi}-Fe{sub 5}C{sub 2}, deactivated rapidly as the carbide was oxidized to Fe{sub 3}O{sub 4}. No difference in activity, stability or deactivation rate was found for {chi}-Fe{sub 5}C{sub 2} and {epsilon}{prime}-Fe{sub 2.2}C.

  13. Metrics of closed world of Friedmann, agitated by electric charge (towards a theory electromagnetic Friedmanns)

    SciTech Connect (OSTI)

    Markov, M.A.; Frolov, V.P.

    1986-06-10

    The generalization is considered of the well-known Tolman problem to the case of electrically charged dust-like matter of the central symmetrical system. The first integrals of the correspondent system of the Einstein-Maxwell equations are found. The problem is specificated in such a way that with the full charge of the system going to zero, the metrics of the closed Friedman world arises. Such a system is considered at the initial moment, that of maximal enlargement. With any nonvanishing but no-matter-how-small value of the electric charge, the metrics is unclosed. The metrics of the almost-Friedmanian part of the world allows the continuation through the narrow manhole (at the small charge) as the Nordstroem Reissner metrics with the parameters m/sub O/ sq rt (chi) = e/sub o/. The expression for the electric potential in the manhole phi/sub h/ = c-squared/sq rt chi does not depend upon the value of the electric charge. The radius of the manhole r/sub h/ = e/sub O/ sq. rt (chi)/ c-squared increases with the increase of the charge. The state of the manhole as given by the classical description appears as essentially unstable from the quantum-physics viewpoint. The production of various pairs in the enormous electric fields of the manhole gives rise to the polarisation of the latter up to effective charge Z < 137e irrespective of the initial (no matter how great) charge of the system.

  14. Thermal stability of intermetallic phases in Fe-rich Fe-Cr-Ni-Mo alloys

    SciTech Connect (OSTI)

    Yang, Ying; Tan, Lizhen; Busby, Jeremy T.

    2015-06-12

    Understanding the stability of precipitate phases in the Fe-rich Fe-Cr-Ni-Mo alloys is critical to the alloy design and application of Mo-containing Austenitic steels. Coupled with thermodynamic modeling, stability of the chi and Laves phases in two Fe-Cr-Ni-Mo alloys were investigated at 1000, 850 and 700 °C for different annealing time. The morphologies, compositions and crystal structures of the matrix and precipitate phases were carefully examined by Scanning Electron Microscopy, Electron Probe Microanalysis, X-ray diffraction and Transmission Electron Microscopy. The two key findings resulted from this work. One is that the chi phase is stable at high temperature and transformed into the Laves phase at low temperature. The other is that both the chi and Laves phases have large solubilites of Cr, Mo and Ni, among which the Mo solubility has a major role on the relative stability of the precipitate phases. The developed thermodynamic models were then applied to evaluating the Mo effect on the stability of precipitate phases in AISI 316 and NF709 alloys.

  15. Evidence for a Common Physical Description of Non-Fermi-Liquid Behavior in Chemically Substituted f -Electron Systems

    SciTech Connect (OSTI)

    de Andrade, M.C.; Chau, R.; Dickey, R.P.; Dilley, N.R.; Freeman, E.J.; Gajewski, D.A.; Maple, M.B. [Department of Physics and Institute for Pure and Applied Physical Sciences, University of California, San Diego, La Jolla, California 92093 (United States)] [Department of Physics and Institute for Pure and Applied Physical Sciences, University of California, San Diego, La Jolla, California 92093 (United States); Movshovich, R. [Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)] [Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States); Castro Neto, A.H.; Castilla, G. [Department of Physics, University of California, Riverside, California 92521 (United States)] [Department of Physics, University of California, Riverside, California 92521 (United States); Jones, B.A. [IBM Almaden Research Center, San Jose, California 95120-6099 (United States)] [IBM Almaden Research Center, San Jose, California 95120-6099 (United States)

    1998-12-01

    The non-Fermi-liquid (NFL) behavior observed in the low temperature specific heat C(T) and magnetic susceptibility {chi}(T) of many chemically substituted f -electron systems is analyzed within the context of a recently developed theory based on Griffiths{close_quote} singularities. Measurements of C(T) and {chi}(T) in the systems Th{sub 1{minus}x}U {sub x}Pd{sub 2}Al{sub 3} , Y{sub 1{minus}x}U {sub x}Pd{sub 3} , and UCu{sub 5{minus}x }M{sub x} (M=Pd,thinspPt ) are found to be consistent with C(T)/T{proportional_to}{chi}(T){proportional_to}T{sup {minus}1+{lambda}} predicted by this model with {lambda}{lt}1 in the NFL regime. These results suggest that the NFL properties observed in a wide variety of disordered f -electron systems can be described within the context of a common physical picture. {copyright} {ital 1998} {ital The American Physical Society}

  16. Spin-glass freezing above the ordering temperature for the Kondo ferromagnet CeNi{sub 0.4}Cu{sub 0.6}

    SciTech Connect (OSTI)

    Gomez Sal, J.C.; Garcia Soldevilla, J.; Blanco, J.A.; Espeso, J.I.; Rodriguez Fernandez, J.; Luis, F.; Bartolome, F.; Bartolome, J.

    1997-11-01

    The low-temperature magnetic and transport properties of the orthorhombic CeNi{sub 0.4}Cu{sub 0.6} compound have been determined from the analysis of specific heat, ac magnetic susceptibility, electrical resistivity, elastic and inelastic neutron scattering. These measurements present intriguing experimental results that could not be explained within the usual phenomenology of Ce-based compounds. C{sub p} and {chi}{sub ac} present anomalies around 1 K corresponding to ferromagnetic order as confirmed by neutron diffraction. The magnetic structure is collinear with very reduced moments, 0.6{mu}{sub B}/Ce lying in the b direction. Additionally, a clear Kondo behavior is observed with a Kondo temperature T{sub K}=1.9K estimated from quasielastic neutron scattering. Above the ordering temperature, further anomalies are observed in C{sub p} and {chi}{sub ac} that could not be explained as originating from crystal electric field or Kondo effects. From the frequency and field dependence of the {chi}{sub ac}, above T{sub c}, a spin-glass state with a freezing temperature T{sub f}=2K is proposed for this compound. This unusual magnetic behavior is discussed in terms of mixed (positive and negative) Ruderman-Kittel-Kasuya-Yosida interactions, randomness (structural disorder), large hybridization (Kondo effect), and strong magnetocrystalline anisotropy (crystal electric field effects). {copyright} {ital 1997} {ital The American Physical Society}

  17. Calculation of the heavy-hadron axial couplings g1, g2, and g3 using lattice QCD

    SciTech Connect (OSTI)

    Will Detmold, David Lin, Stefan Meinel

    2012-06-01

    In a recent paper [arXiv:1109.2480] we have reported on a lattice QCD calculation of the heavy-hadron axial couplings g{sub 1}, g{sub 2}, and g{sub 3}. These quantities are low-energy constants of heavy-hadron chiral perturbation theory (HH{chi}PT) and are related to the B*B{pi}, {Sigma}{sub b}*{Sigma}{sub b}{pi}, and {Sigma}{sub b}{sup (*)}{Lambda}{sub b}{pi} couplings. In the following, we discuss important details of the calculation and give further results. To determine the axial couplings, we explicitly match the matrix elements of the axial current in QCD with the corresponding matrix elements in HH{chi}PT. We construct the ratios of correlation functions used to calculate the matrix elements in lattice QCD, and study the contributions from excited states. We present the complete numerical results and discuss the data analysis in depth. In particular, we demonstrate the convergence of SU(4|2) HH{chi}PT for the axial current matrix elements at pion masses up to about 400 MeV and show the impact of the nonanalytic loop contributions. Finally, we present additional predictions for strong and radiative decay widths of charm and bottom baryons.

  18. Large-volume flux closure during plasmoid-mediated reconnection in coaxial helicity injection

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

    Ebrahimi, F.; Raman, R.

    2016-03-23

    A large-volume flux closure during transient coaxial helicity injection (CHI) in NSTX-U is demonstrated through resistive magnetohydrodynamics (MHD) simulations. Several major improvements, including the improved positioning of the divertor poloidal field coils, are projected to improve the CHI start-up phase in NSTX-U. Simulations in the NSTX-U configuration with constant in time coil currents show that with strong flux shaping the injected open field lines (injector flux) rapidly reconnect and form large volume of closed flux surfaces. This is achieved by driving parallel current in the injector flux coil and oppositely directed currents in the flux shaping coils to form amore » narrow injector flux footprint and push the injector flux into the vessel. As the helicity and plasma are injected into the device, the oppositely directed field lines in the injector region are forced to reconnect through a local Sweet-Parker type reconnection, or to spontaneously reconnect when the elongated current sheet becomes MHD unstable to form plasmoids. In these simulations for the first time, it is found that the closed flux is over 70% of the initial injector flux used to initiate the discharge. Furthermore, these results could work well for the application of transient CHI in devices that employ super conducting coils to generate and sustain the plasma equilibrium.« less

  19. Inclusive decays of {ital B} mesons to charmonium

    SciTech Connect (OSTI)

    Balest, R.; Cho, K.; Ford, W.T.; Johnson, D.R.; Lingel, K.; Lohner, M.; Rankin, P.; Smith, J.G.; Alexander, J.P.; Bebek, C.; Berkelman, K.; Bloom, K.; Browder, T.E.; Cassel, D.G.; Cho, H.A.; Coffman, D.M.; Crowcroft, D.S.; Drell, P.S.; Dumas, D.J.; Ehrlich, R.; Gaidarev, P.; Garcia-Sciveres, M.; Geiser, B.; Gittelman, B.; Gray, S.W.; Hartill, D.L.; Heltsley, B.K.; Henderson, S.; Jones, C.D.; Jones, S.L.; Kandaswamy, J.; Katayama, N.; Kim, P.C.; Kreinick, D.L.; Ludwig, G.S.; Masui, J.; Mevissen, J.; Mistry, N.B.; Ng, C.R.; Nordberg, E.; Patterson, J.R.; Peterson, D.; Riley, D.; Salman, S.; Sapper, M.; Wuerthwein, F.; Avery, P.; Freyberger, A.; Rodriguez, J.; Yang, S.; Yelton, J.; Cinabro, D.; Liu, T.; Saulnier, M.; Wilson, R.; Yamamoto, H.; Bergfeld, T.; Eisenstein, B.I.; Gollin, G.; Ong, B.; Palmer, M.; Selen, M.; Thaler, J.J.; Edwards, K.W.; Ogg, M.; Bellerive, A.; Britton, D.I.; Hyatt, E.R.F.; MacFarlane, D.B.; Patel, P.M.; Spaan, B.; Sadoff, A.J.; Ammar, R.; Baringer, P.; Bean, A.; Besson, D.; Coppage, D.; Copty, N.; Davis, R.; Hancock, N.; Kelly, M.; Kotov, S.; Kravchenko, I.; Kwak, N.; Lam, H.; Kubota, Y.; Lattery, M.; Momayezi, M.; Nelson, J.K.; Patton, S.; Poling, R.; Savinov, V.; Schrenk, S.; Wang, R.; Alam, M.S.; Kim, I.J.; Ling, Z.; Mahmood, A.H.; O`Neill, J.J.; Severini, H.; Sun, C.R.; Wappler, F.; Crawford, G.; Daubenmier, C.M.; Fulton, R.; Fujino, D.; Gan, K.K.; Honscheid, K.; Kagan, H.; Kass, R.; Lee, J.; Sung, M.; White, C.; Wolf, A.; Zoeller, M.M.; Butler, F.; Fu, X.; Nemati, B.; Ross, W.R.; Skubic, P.; Wood, M.; Bishai, M.; Fast, J.; Gerndt, E.; Hinson, J.W.; McIlwain, R.L.; Miao, T.; Miller, D.H.; Modesitt, M.; Payne, D.; Shibata, E.I.; Shipsey, I.P.J.; Wang, P.N.; Battle, M.; Ernst, J.; Gibbons, L.; Kwon, Y.; Roberts, S.; Thorndike, E.H.; Wang, C.H.; Dominick, J.; Lambrecht, M.; Sanghera, S.; Shelkov, V.; Skwarnicki, T.; Stroynowski, R.; Volobouev, I.; Wei, G.; Artuso, M.; Gao, M.; Goldberg, M.; He, D.; Horwitz, N.; Moneti, G.C.; (CLEO Collabor..

    1995-09-01

    We have used the CLEO-II detector at the Cornell Electron Storage Ringe (CESR) to study the inclusive production of charmonium mesons in a sample of 2.15 million {ital B{bar B}} events. We find inclusive branching fractions of (1.12{plus_minus}0.04{plus_minus}0.06)% for {ital B}{r_arrow}{ital J}/{psi}{ital X}, (0.34{plus_minus}0.04{plus_minus}0.03)% for {ital B}{r_arrow}{psi}{prime}{ital X}, and (0.40{plus_minus}0.06{plus_minus}0.04)% for {ital B}{r_arrow}{chi}{sub {ital c}1}{ital X}. We also find some evidence for the inclusive production of {chi}{sub {ital c}2}, and set an upper limit for the branching fraction of the inclusive decay {ital B}{r_arrow}{eta}{sub {ital c}}{ital X} of 0.9% at 90% confidence level. Momentum spectra for inclusive {ital J}/{psi}, {psi}{prime}, and {chi}{sub {ital c}1} production are presented. These measurements are compared to theoretical calculations.

  20. Thermal stability of intermetallic phases in Fe-rich Fe-Cr-Ni-Mo alloys

    SciTech Connect (OSTI)

    Yang, Ying; Tan, Lizhen; Busby, Jeremy T.

    2015-06-12

    Understanding the stability of precipitate phases in the Fe-rich Fe-Cr-Ni-Mo alloys is critical to the alloy design and application of Mo-containing Austenitic steels. Coupled with thermodynamic modeling, stability of the chi and Laves phases in two Fe-Cr-Ni-Mo alloys were investigated at 1000, 850 and 700 C for different annealing time. The morphologies, compositions and crystal structures of the matrix and precipitate phases were carefully examined by Scanning Electron Microscopy, Electron Probe Microanalysis, X-ray diffraction and Transmission Electron Microscopy. The two key findings resulted from this work. One is that the chi phase is stable at high temperature and transformed into the Laves phase at low temperature. The other is that both the chi and Laves phases have large solubilites of Cr, Mo and Ni, among which the Mo solubility has a major role on the relative stability of the precipitate phases. The developed thermodynamic models were then applied to evaluating the Mo effect on the stability of precipitate phases in AISI 316 and NF709 alloys.

  1. Montana Integrated Carbon to Liquids (ICTL) Demonstration Program

    SciTech Connect (OSTI)

    Fiato, Rocco; Sharma, Ramesh; Allen, Mark; Peyton, Brent; Macur, Richard; Cameron, Jemima

    2013-09-30

    Integrated carbon-to-liquids technology (ICTL) incorporates three basic processes for the conversion of a wide range of feedstocks to distillate liquid fuels: (1) Direct Microcatalytic Coal Liquefaction (MCL) is coupled with biomass liquefaction via (2) Catalytic Hydrodeoxygenation and Isomerization (CHI) of fatty acid methyl esters (FAME) or trigylceride fatty acids (TGFA) to produce liquid fuels, with process derived (3) CO{sub 2} Capture and Utilization (CCU) via algae production and use in BioFertilizer for added terrestrial sequestration of CO{sub 2}, or as a feedstock for MCL and/or CHI. This novel approach enables synthetic fuels production while simultaneously meeting EISA 2007 Section 526 targets, minimizing land use and water consumption, and providing cost competitive fuels at current day petroleum prices. ICTL was demonstrated with Montana Crow sub-bituminous coal in MCL pilot scale operations at the Energy and Environmental Research Center at the University of North Dakota (EERC), with related pilot scale CHI studies conducted at the University of Pittsburgh Applied Research Center (PARC). Coal-Biomass to Liquid (CBTL) Fuel samples were evaluated at the US Air Force Research Labs (AFRL) in Dayton and greenhouse tests of algae based BioFertilizer conducted at Montana State University (MSU). Econometric modeling studies were also conducted on the use of algae based BioFertilizer in a wheat-camelina crop rotation cycle. We find that the combined operation is not only able to help boost crop yields, but also to provide added crop yields and associated profits from TGFA (from crop production) for use an ICTL plant feedstock. This program demonstrated the overall viability of ICTL in pilot scale operations. Related work on the Life Cycle Assessment (LCA) of a Montana project indicated that CCU could be employed very effectively to reduce the overall carbon footprint of the MCL/CHI process. Plans are currently being made to conduct larger-scale process

  2. Lake Roosevelt Fisheries Evaluation Program; Meadow Creek vs. Lake Whatcom Stock Kokanee Salmon Investigations in Lake Roosevelt, 2001 Annual Report.

    SciTech Connect (OSTI)

    McLellan, Holly; Scholz, Allan

    2002-03-01

    Lake Roosevelt has been stocked with Lake Whatcom stock kokanee since 1989 with the primary objective of creating a self-sustaining recreational fishery. Due to low return numbers, it was hypothesized a stock of kokanee, native to the upper Columbia River, might perform better than the coastal Lake Whatcom strain. Kokanee from Meadow Creek, a tributary of Kootenay Lake, British Columbia were selected as an alternative stock. Matched pair releases of Lake Whatcom and Meadow Creek kokanee were made from Sherman Creek Hatchery in late June 2000 and repeated in 2001. Stock performance between Lake Whatcom and Meadow Creek kokanee was evaluated using three performance measures; (1) the number of returns to Sherman Creek, the primary egg collection facility, (2) the number of returns to other tributaries and (3) the number of returns to the creel. Kokanee were collected during five passes through the reservoir via electrofishing, which included 87 tributary mouths during the fall of 2000 and 2001. Chi-square analysis indicated age two Meadow Creek kokanee returned to Sherman Creek in significantly higher numbers when compared to the Whatcom stock in 2000 ({chi}{sup 2} = 736.6; d.f. = 1; P < 0.01) and 2001 ({chi}{sup 2} = 156.2; d.f. = 1; P < 0.01). Reservoir wide recoveries of age two kokanee had similar results in 2000 ({chi}{sup 2} = 735.3; d.f. = 1; P < 0.01) and 2001 ({chi}{sup 2} = 150.1; d.f. = 1; P < 0.01). Six Lake Whatcom and seven Meadow Creek three year olds were collected in 2001. The sample size of three year olds was too small for statistical analysis. No kokanee were collected during creel surveys in 2000, and two (age three kokanee) were collected in 2001. Neither of the hatchery kokanee collected were coded wire tagged, therefore stock could not be distinguished. After two years of monitoring, neither Meadow Creek or Lake Whatcom kokanee appear to be capable of providing a run of three-year-old spawners to sustain stocking efforts. The small number of

  3. Quantitative Monte Carlo-based holmium-166 SPECT reconstruction

    SciTech Connect (OSTI)

    Elschot, Mattijs; Smits, Maarten L. J.; Nijsen, Johannes F. W.; Lam, Marnix G. E. H.; Zonnenberg, Bernard A.; Bosch, Maurice A. A. J. van den; Jong, Hugo W. A. M. de; Viergever, Max A.

    2013-11-15

    Purpose: Quantitative imaging of the radionuclide distribution is of increasing interest for microsphere radioembolization (RE) of liver malignancies, to aid treatment planning and dosimetry. For this purpose, holmium-166 ({sup 166}Ho) microspheres have been developed, which can be visualized with a gamma camera. The objective of this work is to develop and evaluate a new reconstruction method for quantitative {sup 166}Ho SPECT, including Monte Carlo-based modeling of photon contributions from the full energy spectrum.Methods: A fast Monte Carlo (MC) simulator was developed for simulation of {sup 166}Ho projection images and incorporated in a statistical reconstruction algorithm (SPECT-fMC). Photon scatter and attenuation for all photons sampled from the full {sup 166}Ho energy spectrum were modeled during reconstruction by Monte Carlo simulations. The energy- and distance-dependent collimator-detector response was modeled using precalculated convolution kernels. Phantom experiments were performed to quantitatively evaluate image contrast, image noise, count errors, and activity recovery coefficients (ARCs) of SPECT-fMC in comparison with those of an energy window-based method for correction of down-scattered high-energy photons (SPECT-DSW) and a previously presented hybrid method that combines MC simulation of photopeak scatter with energy window-based estimation of down-scattered high-energy contributions (SPECT-ppMC+DSW). Additionally, the impact of SPECT-fMC on whole-body recovered activities (A{sup est}) and estimated radiation absorbed doses was evaluated using clinical SPECT data of six {sup 166}Ho RE patients.Results: At the same noise level, SPECT-fMC images showed substantially higher contrast than SPECT-DSW and SPECT-ppMC+DSW in spheres ≥17 mm in diameter. The count error was reduced from 29% (SPECT-DSW) and 25% (SPECT-ppMC+DSW) to 12% (SPECT-fMC). ARCs in five spherical volumes of 1.96–106.21 ml were improved from 32%–63% (SPECT-DSW) and 50%–80

  4. Argon metastable dynamics and lifetimes in a direct current microdischarge

    SciTech Connect (OSTI)

    Stefanovi?, Ilija; Kuschel, Thomas; Schrter, Sandra; Bke, Marc

    2014-09-21

    In this paper we study the properties of a pulsed dc microdischarge with the continuous flow of argon. Argon metastable lifetimes are measured by tunable diode laser absorption spectroscopy (TDLAS) and are compared with calculated values which yield information about excitation and de-excitation processes. By increasing the gas flow-rate about 5 times from 10 to 50 sccm, the Ar{sup m} lifetime increases from 1 to 5 ?s due to the reduction of metastable quenching with gas impurities. Optical emission spectroscopy reveals nitrogen and water molecules as the main gas impurities. The estimated N? density [N?]=0.1% is too low to explain the measured metastable lifetimes. Water impurity was found to be the main de-excitation source of argon metastable atoms due to high quenching coefficients. The water impurity level of [H?O]=0.15% to 1% is sufficient to bring calculated metastable lifetimes in line with experiments. The maximum value of water content in the discharge compared to the argon atoms is estimated to approximately 6%, due to the large surface to volume ratio of the microdischarge. The current pulse releases the water molecules from the electrode surface and they are either re-adsorbed in the time between 0.4 ms for [H?O]=1% and 2.6 ms for [H?O]=0.15% or pumped out of the discharge with the speed equal to the gas flow-rate. Depending on its partial pressure, the water impurity re-adsorption time is of the order of magnitude or less then the argon gas residence time.

  5. A correlation between altered O-GlcNAcylation, migration and with changes in E-cadherin levels in ovarian cancer cells

    SciTech Connect (OSTI)

    Jin, Feng-zhen; Yu, Chao; Zhao, De-zhang; Wu, Ming-jun; Yang, Zhu

    2013-06-10

    O-GlcNAcylation is a dynamic and reversible posttranslational modification of nuclear and cytoplasmic proteins. In recent years, the roles of O-GlcNAcylation in several human malignant tumors have been investigated, and O-GlcNAcylation was found to be linked to cellular features relevant to metastasis. In this study, we modeled four diverse ovarian cancer cells and investigated the effects of O-GlcNAcylation on ovarian cancer cell migration. We found that total O-GlcNAcylation level was elevated in HO-8910PM cells compared to OVCAR3 cells. Additionally, through altering the total O-GlcNAcylation level by OGT silencing or OGA inhibition, we found that the migration of OVCAR3 cells was dramatically enhanced by PUGNAc and Thiamet G treatment, and the migration ability of HO-8910PM cells was significantly inhibited by OGT silencing. Furthermore, we also found that the expression of E-cadherin, an O-GlcNAcylated protein in ovarian cancer cells, was reduced by OGA inhibition in OVCAR3 cells and elevated by OGT silencing in HO-8910PM cells. These results indicate that O-GlcNAcylation could enhance ovarian cancer cell migration and decrease the expression of E-cadherin. Our studies also suggest that O-GlcNAcylation might become another potential target for the therapy of ovarian cancer. -- Highlights: We examine the migration potential of diverse ovarian cancer cells. We examine the total O-GlcNAcylation level of diverse ovarian cancer cells. Increasing O-GlcNAcylation level will enhance the migration of ovarian cancer cells. Reducing O-GlcNAcylation level will inhibit the migration of ovarian cancer cells. The mechanism explains O-GlcNAcylation enhance ovarian cancer cell migration.

  6. Nuclear Data Sheets for A-142

    SciTech Connect (OSTI)

    Johnson, T.D.; Johnson,T.D.; Symochko,D.; Fadil,M.; Tuli,J.K.

    2011-08-01

    The 2000 Nuclear Data Sheets for A = 142 by J. K. Tuli, with literature cutoff date of February 4, 2000, has been revised. The evaluated experimental data are presented for 16 known nuclides of mass 142 (Ba, Ce, Cs, Dy, Eu, Gd, Ho, I, La, Nd, Pm, Pr, Sm, Tb, Te, Xe). Comparing to the previous evaluation (2000Tu01) significant changes were done to the level schemes of Gd, Cs, Ce and Nd. For all nuclides, the more recent Q values have been added.

  7. PPaAJ~f~-"'

    Office of Legacy Management (LM)

    - PgOPO6bt OF MURD . COls'iRACT AT(lI&1)-140~ FIlli ml3 (31EXIUL CON6'E'JCTICB :i:, cbp, ., ,,. ._. SBMOL: "' PPaAJ~f~-"' :: "' ~ .' ., .~ : c !. .: ..:.. ..~ : ,. r. :;: A?TiL.C?@!, " ' If. D&do& . . . . . .' .' :: ,,,, A&g.?% Tigs mwonodum raquosts mat a cmtnot with (ho chwloal Cmetructlm Cerp.. bo jinqmrod la aw~danao with inforwtla hemlaaf4.r se4 fstb. Ski? mebere&dw proadsa a empfste reaord oizthe aego4Aa4lws leadia~ $e'the'prop~d OcDtrrrot and alro

  8. SREL Reprint #3280

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

    0 Plutonium Immobilization and Remobilization by Soil Mineral and Organic Matter in the Far-Field of the Savannah River Site, U.S. Chen Xu1, Matthew Athon1, Yi-Fang Ho1, Hyun-Shik Chang2, Saijin Zhang1, Daniel I. Kaplan3, Kathleen A. Schwehr1, Nicole DiDonato4, Patrick G. Hatcher4, and Peter H. Santschi1 1Department of Marine Sciences, Texas A&M University, Building 3029, Galveston, TX 77553, USA 2Savannah River Ecology Laboratory, University of Georgia, P.O. Drawer E, Aiken,

  9. Cancer risk estimates from radiation therapy for heterotopic ossification prophylaxis after total hip arthroplasty

    SciTech Connect (OSTI)

    Mazonakis, Michalis; Berris, Theoharris; Damilakis, John; Lyraraki, Efrossyni

    2013-10-15

    Purpose: Heterotopic ossification (HO) is a frequent complication following total hip arthroplasty. This study was conducted to calculate the radiation dose to organs-at-risk and estimate the probability of cancer induction from radiotherapy for HO prophylaxis.Methods: Hip irradiation for HO with a 6 MV photon beam was simulated with the aid of a Monte Carlo model. A realistic humanoid phantom representing an average adult patient was implemented in Monte Carlo environment for dosimetric calculations. The average out-of-field radiation dose to stomach, liver, lung, prostate, bladder, thyroid, breast, uterus, and ovary was calculated. The organ-equivalent-dose to colon, that was partly included within the treatment field, was also determined. Organ dose calculations were carried out using three different field sizes. The dependence of organ doses upon the block insertion into primary beam for shielding colon and prosthesis was investigated. The lifetime attributable risk for cancer development was estimated using organ, age, and gender-specific risk coefficients.Results: For a typical target dose of 7 Gy, organ doses varied from 1.0 to 741.1 mGy by the field dimensions and organ location relative to the field edge. Blocked field irradiations resulted in a dose range of 1.4146.3 mGy. The most probable detriment from open field treatment of male patients was colon cancer with a high risk of 564.3 10{sup ?5} to 837.4 10{sup ?5} depending upon the organ dose magnitude and the patient's age. The corresponding colon cancer risk for female patients was (372.2541.0) 10{sup ?5}. The probability of bladder cancer development was more than 113.7 10{sup ?5} and 110.3 10{sup ?5} for males and females, respectively. The cancer risk range to other individual organs was reduced to (0.00368.5) 10{sup ?5}.Conclusions: The risk for cancer induction from radiation therapy for HO prophylaxis after total hip arthroplasty varies considerably by the treatment parameters

  10. Anaerobic dehalogenation of hydroxylated polychlorinated biphenyls by Desulfitobacterium dehalogenans

    SciTech Connect (OSTI)

    Wiegel, J.; Zhang, X.; Wu, Q.

    1999-05-01

    Ten years after reports on the existence of anaerobic dehalogenation of polychlorinated biphenyls (PCBs) in sediment slurries, the authors report here on the rapid reductive dehalogenation of para-hydroxylated PCBs (HO-PCBs), the excreted main metabolites of PCB in mammals, which can exhibit estrogenic and antiestrogenic activities in humans. The anaerobic bacterium Desulfitobacterium dehalogenans completely dehalogenates all flanking chlorines (chlorines in ortho position to the para-hydroxyl group) from congeners such as 3,3{prime},5,5{prime}-tetrachloro-4,4{prime}-dihydroxybiphenyl.

  11. The information-theoretical entropy of some quantum oscillators

    SciTech Connect (OSTI)

    Popov, D. Pop, N.; Popov, M.

    2014-11-24

    The Wehrl entropy or the 'classical' entropy associated with a quantum system is the entropy of the probability distribution in phase space, corresponding to the Husimi Q-function in terms of coherent states. In the present paper, we shall focus our attention on the examination of the Wehrl entropy for both the pure and the mixed (thermal) states of the pseudoharmonic oscillator (PHO). The choice of the PHO is interesting because this oscillator is an intermediate between the ideal one-dimensional harmonic oscillator (HO-1D) and the more practical anharmonicone.

  12. Devices capable of removing silicon and aluminum from gaseous atmospheres

    DOE Patents [OSTI]

    Spengler, Charles J.; Singh, Prabhakar

    1989-01-01

    An electrochemical device is made of a containment vessel (30) optional ceramic material within the containment vessel and including one or more electrochemical cells (10), the cells containing a porous exposed electrode (11) in contact with a solid electrolyte, where at least one of the exposed electrode, the containment vessel, and the optional ceramic material contains a deposit selected from metal oxide and metal salt capable of forming a metal oxide upon heating, where the metal is selected from the group consisting of Ce, Sm, Mg, Be, Ca, Sr, Ti, Zr, Hf, Y, La, Pr, Nb, Pm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Th, U, and their mixtures.

  13. September 2015 Most Viewed Documents for Chemistry | OSTI, US Dept of

    Office of Scientific and Technical Information (OSTI)

    Energy Office of Scientific and Technical Information September 2015 Most Viewed Documents for Chemistry Decomposition of calcium sulfate: a review of the literature. [62 refs] Swift, W M; Panek, A F; Smith, G W; Vogel, G J; Jonke, A A (1976) 122 Electrical conductivity measurements of aqueous electrolyte solutions at high temperatures and high pressures Ho, P.C.; Palmer, D.A. (1995) 116 Vapor-liquid equilibria for nitric acid-water and plutonium nitrate-nitric acid-water solutions Maimoni,

  14. collab-list-scientific.pptx

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

    Collaboration ! University of Bern, Switzerland: M. Auger, A. Ereditato, D. Goeldi, I. Kreslo, D. Lorca, M. Lüthi, C. Rudolf von Rohr, J. Sinclair, M. Weber Brookhaven: M. Bishai, H. Chen, J. Joshi, B. Kirby, Y. Li, M. Mooney, X. Qian, B. Viren, C. Zhang University of Cambridge: J. Jan de Vries, J. Marshall, L. Escudero Sanchez, M. Thomson, J. Weston University of Chicago: W.M. Foreman, J. Ho, D.W. Schmitz, J. Zennamo University of Cincinnati: R. Grosso, R.A. Johnson, J. St. John Columbia

  15. Identification of luminescent surface defect in SiC quantum dots

    SciTech Connect (OSTI)

    Dai, Dejian; Guo, Xiaoxiao; Fan, Jiyang

    2015-02-02

    The surface defect that results in the usually observed blue luminescence in the SiC quantum dots (QDs) remains unclear. We experimentally identify that the surface defect C=O (in COO) is responsible for this constant blue luminescence. The HOC=O [n{sub (OH)} ? ?*{sub (CO)}] interaction between the hydroxyl and carbonyl groups changes the energy levels of C=O and makes the light absorption/emission arise at around 326/438?nm. Another surface defect (SiSi) is identified and its light absorption contributes to both C=O-related luminescence and quantum-confinement luminescence of the SiC QDs.

  16. STATE OF NEVADA

    Office of Legacy Management (LM)

    ' , STATE OF NEVADA / j DEPARTME T'- OF_CONSERVATION AND NATURAL I;).c-.)}"",.~ Carson City View of spring discha rge in Hot Creek Ca nyon. WATER RESOU RCES - RECON NAISSANCE SERI ES REPORT 38 ... By F. Eugene Rush Geolog ist * . , and . _ . . , J * _. * * * .~ ~ u.a lieir rFt 0 M T H I S 0 f f J C .£ ~ - _ . PL E A S E WATER-RESOURCES APPRAISAL OF LITTLE FISH LAKE, HOT CREEK, EVJu6Ho.. \ . Prepared cooperatively by the Geological Survey, U.S. Department of the Interior MAY 1966

  17. / J8Y.17 I E(DE86008418)

    Office of Legacy Management (LM)

    /,, DOE/EIS-0109F / J8Y.17 I E(DE86008418) O&4 .48 FINAL Environmental Impact Statement Long-Term Management of the Existing Radioactive Wastes and Residues at the Niagara Falls Storage Site ( Se(42Ho- /,02.F7fro^' t^ K- A~-) April 1986 U. S. Department of Energy Washington, D.C. 20585 DOE/EIS-0109F (DE86008418) Distribution Category UC-70A FINAL ENVIRONMENTAL IMPACT STATEMENT LONG-TERM MANAGEMENT OF THE EXISTING RADIOACTIVE WASTES AND RESIDUES AT THE NIAGARA FALLS STORAGE SITE April 1986

  18. Heavy ion precompound phenomena: A glance at hard gamma and subthreshold pion production

    SciTech Connect (OSTI)

    Blann, M.; Remington, B.A.

    1987-08-01

    We test a relaxation model based on two body nucleon-nucleon scattering processes to interpret phenomena observed in heavy ion reactions. We use the Boltzmann master equation to accomplish this. By assuming that the projectile nucleons share the total excitation with equal a-priori probability of all configurations, we are able to reproduce several sets of neutron spectra from /sup 20/Ne and /sup 12/C induced reactions on /sup 165/Ho. With no additional free parameters our model successfully reproduces subthreshold pion production cross sections, high energy ..gamma..-ray spectra, and angular distributions of high energy ..gamma..-rays. 40 refs., 12 figs., 2 tabs.

  19. Graduate Students | Photosynthetic Antenna Research Center

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

    People / Graduate Students Graduate Students Sam Barnett Graduate Student E-mail: sbarnett1@sheffield.ac.uk Hui-Yuan Chen Graduate Student E-mail: chen.hui-yuan@wustl.edu Kaitlyn Faries Kaitlyn Faries Graduate Student E-mail: kaitlyn.faries@wustl.edu Phone: 314.935.6566 Kirsty Hacking Graduate Student E-mail: k.hacking.1@research.gla.ac.uk Ming-Yang Ho Graduate Student E-mail: mxh504@psu.edu Don Hood Graduate Student E-mail: dhood@wustl.edu Xia Huang Graduate Student E-mail:

  20. NdBaFe{sub 2}O{sub 5+w} and steric effect of Nd on valence mixing and ordering of Fe

    SciTech Connect (OSTI)

    Linden, J.; Karen, P.

    2010-11-15

    NdBaFe{sub 2}O{sub 5} above and below Verwey transition is studied by synchrotron X-ray powder diffraction and Moessbauer spectroscopy and compared with GdBaFe{sub 2}O{sub 5} that adopts a higher-symmetry charge-ordered structure typical of the Sm-Ho variants of the title phase. Differences are investigated by Moessbauer spectroscopy accounting for iron valence states at their local magnetic and ionic environments. In the charge-ordered state, the orientation of the electric-field gradient (EFG) versus the internal magnetic field (B) agrees with experiment only when contribution from charges of the ordered d{sub xz} orbitals of Fe{sup 2+} is included, proving thus the orbital ordering. The EFG magnitude indicates that only some 60% of the orbital order occurring in the Sm-Ho variants is achieved in NdBaFe{sub 2}O{sub 5}. The consequent diminishing of the orbit contribution (of opposite sign) to the field B at the Fe{sup 2+} nucleus explains why B is larger than for the Sm-Ho variants. The decreased orbital ordering in NdBaFe{sub 2}O{sub 5} causes a corresponding decrease in charge ordering, which is achieved by decreasing both the amount of the charge-ordered iron states in the sample and their fractional valence separation as seen by the Moessbauer isomer shift. The charge ordering in NdBaFe{sub 2}O{sub 5+w} is more easily suppressed by the oxygen nonstoichiometry (w) than in the Sm-Ho variants. Also the valence mixing into Fe{sup 2.5+} is destabilized by the large size of Nd. The orientation of the EFG around this valence-mixed iron can only be accounted for when the valence-mixing electron is included in the electrostatic ligand field. This proves that the valence mixing occurs between the two iron atoms facing each other across the structural plane of the rare-earth atoms. -- Graphical Abstract: Moessbauer spectrum detects ordering of d{sub xz} orbitals of Fe{sup II}O{sub 5} via the electric-field gradient (EFG) of the orbital, which makes the main component of