National Library of Energy BETA

Sample records for ox yg enates

  1. OxCORT v4 Quick Guide Student Guide To OxCORT

    E-Print Network [OSTI]

    Oxford, University of

    into the field below. Topic ­ To search for reports relating to a particular topic enter one or all the words roles: · Student role Topics · How To Access OxCORT pg 1 · Viewing Reports pg 2 - Searching for reportsCORT 1. Open your web browser (internet explorer, firefox or similar). 2. Enter the address www

  2. Complex catalytic behaviors of CuTiOx mixed-oxide during CO oxidation...

    Office of Scientific and Technical Information (OSTI)

    reactivity, and selectivity. Here, the activity and stability of the CuTiOx monolayer film supported on Cu(111), CuTiOxCu(111), during CO oxidation was explored using density...

  3. STANDARD OPERATING PROCEDURE FOR TUBE "B2-Ox-Alloy" furnace in TRL.

    E-Print Network [OSTI]

    Reif, Rafael

    STANDARD OPERATING PROCEDURE FOR TUBE "B2-Ox-Alloy" furnace in TRL. INTRODUCTION Tube "B2-Ox. Three Eurotherm temperature controllers provide a 20 inch long, flat profile in the Center Zone PROCEDURE. 1) "ENGAGE" the machine in CORAL for TRL tube "B2-Ox-Alloy"machine, before you start. Tube B2

  4. 11Physical mechanisms of enhanced conductivity in irradiated InOx nanocrystalline films

    E-Print Network [OSTI]

    Ovid'ko Ilya A.

    11Physical mechanisms of enhanced conductivity in irradiated InOx nanocrystalline films Study Center Co. Ltd. PHYSICAL MECHANISMS OF ENHANCED CONDUCTIVITY IN IRRADIATED InOx NANOCRYSTALLINE evolution in InOx nanocrystalline (nano-grained) films after UV light irradiation, and its dependence

  5. STANDARD OPERATING PROCEDURE FOR TUBE "A2-WetOxBond" furnace in TRL.

    E-Print Network [OSTI]

    Reif, Rafael

    STANDARD OPERATING PROCEDURE FOR TUBE "A2-WetOxBond" furnace in TRL. INTRODUCTION Tube "A2-Wet. Three Eurotherm temperature controllers provide a 20 inch long, flat profile in the Center Zone resistant gloves to handle those parts PROCEDURE. 1) "ENGAGE" the machine in CORAL for TRL tube "A2-WetOxBond"machine

  6. STANDARD OPERATING PROCEDURE FOR TUBE "B3-DryOx" furnace in TRL.

    E-Print Network [OSTI]

    Reif, Rafael

    STANDARD OPERATING PROCEDURE FOR TUBE "B3-DryOx" furnace in TRL. INTRODUCTION Tube "B3-Dry profile in the Center Zone; they are arranged in a master/slave configuration and the temperature profile to handle those parts PROCEDURE. 1) "ENGAGE" the machine in CORAL for TRL tube "B3-DryOx"machine, before you

  7. Department of Earth Sciences South Parks Road, Oxford OX1 3AN

    E-Print Network [OSTI]

    Henderson, Gideon

    Department of Earth Sciences South Parks Road, Oxford OX1 3AN If you are new to the Department offers two schemes which help parents save tax and national insurance on their childcare costs: Salary

  8. Director: Dr Nigel Bowles 1A South Parks Road, Oxford, OX1 3UB, United Kingdom

    E-Print Network [OSTI]

    Oxford, University of

    Director: Dr Nigel Bowles 1A South Parks Road, Oxford, OX1 3UB, United Kingdom +44 1865 282 705-First Century America: What Sustains the Ruckus? #12;Wednesday 29 April 17:00-18:30 Abortion in Context: Law

  9. Sensors and Actuators B 111112 (2005) 207212 Highly sensitive layered ZnO/LiNbO3 SAW device with InOx

    E-Print Network [OSTI]

    2005-01-01

    with InOx selective layer for NO2 and H2 gas sensing S.J. Ippolitoa,b,, S. Kandasamya, K. Kalantar and sensitivity, InOx layers of thickness 40 and 200 nm were employed. The sensor's performance was analyzed of the layered SAW structure with the DC sputtered InOx thin film. The surface of the layered SAW structure

  10. Submicron YBa2Cu3Ox ramp Josephson junctions Philippe V. Komissinski,a)

    E-Print Network [OSTI]

    Högberg, Björn

    into the submicron range, similar moves are likely in superconductor electronics. Smaller Josephson junctions with a high density of the superconducting critical current Jc permit, for ex- ample, rapid single flux on high-temperature superconductors, namely YBa2Cu3Ox YBCO , satisfy these conditions having high Ic

  11. Oxygen-induced bi-modal failure phenomenon in SiOx-based resistive switching memory

    E-Print Network [OSTI]

    Yu, Edward T.

    -pJ energy consumption,3 low cost, and robust reliability.4 A simple process with conventional CMOS Carlo simulation using bi-modal statistics to enable feature distribution modeling of failure modes are the critical requirements for commercial ReRAM products. Silicon oxide (SiOx) has been used as gate dielectrics

  12. STANDARD OPERATING PROCEDURE FOR TUBE "A1-GateOx" furnace in TRL.

    E-Print Network [OSTI]

    Reif, Rafael

    STANDARD OPERATING PROCEDURE FOR TUBE "A1-GateOx" furnace in TRL. INTRODUCTION Tube "A1-Gate. Three Eurotherm temperature controllers provide a 20 inch long, flat profile in the Center Zone the special heat resistant gloves to handle those parts PROCEDURE. 1) "ENGAGE" the machine in CORAL for TRL

  13. Complex catalytic behaviors of CuTiOx mixed-oxide during CO oxidation

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

    Kim, Hyun You; Liu, Ping

    2015-09-21

    Mixed metal oxides have attracted considerable attention in heterogeneous catalysis due to the unique stability, reactivity, and selectivity. Here, the activity and stability of the CuTiOx monolayer film supported on Cu(111), CuTiOx/Cu(111), during CO oxidation was explored using density functional theory (DFT). The unique structural frame of CuTiOx is able to stabilize and isolate a single Cu+ site on the terrace, which is previously proposed active for CO oxidation. Furthermore, it is not the case, where the reaction via both the Langmuir–Hinshelwood (LH) and the Mars-van Krevelen (M-vK) mechanisms are hindered on such single Cu+ site. Upon the formation ofmore »step-edges, the synergy among Cu?+ sites, TiOx matrix, and Cu(111) is able to catalyze the reaction well. Depending on temperatures and partial pressure of CO and O2, the surface structure varies, which determines the dominant mechanism. In accordance with our results, the Cu?+ ion alone does not work well for CO oxidation in the form of single sites, while the synergy among multiple active sites is necessary to facilitate the reaction.« less

  14. Kinetic simulation of the O-X conversion process in dense magnetized plasmas

    SciTech Connect (OSTI)

    Ali Asgarian, M. [Physics Department, Isfahan University of Technology, Isfahan (Iran, Islamic Republic of) [Physics Department, Isfahan University of Technology, Isfahan (Iran, Islamic Republic of); Department of Electrical and Computer Engineering, Michigan State University, Michigan 48824-1226 (United States); Verboncoeur, J. P. [Department of Electrical and Computer Engineering, Michigan State University, Michigan 48824-1226 (United States)] [Department of Electrical and Computer Engineering, Michigan State University, Michigan 48824-1226 (United States); Parvazian, A. [Physics Department, Isfahan University of Technology, Isfahan (Iran, Islamic Republic of)] [Physics Department, Isfahan University of Technology, Isfahan (Iran, Islamic Republic of); Trines, R. [STFC Rutherford Appleton Laboratory, Didcot (United Kingdom)] [STFC Rutherford Appleton Laboratory, Didcot (United Kingdom)

    2013-10-15

    One scheme for heating a dense magnetized plasma core, such as in a tokamak, involves launching an ordinary (O) electromagnetic wave at the low density edge. It is converted to a reflected extraordinary (X) electromagnetic wave under certain conditions, and then transformed into an electron Bernstein wave able to reach high density regions inaccessible to most other waves. The O-X mode conversion is important in heating and diagnostic processes in different devices such as tokamaks, stellarators, and some types of pinches. The goal of this study has been to demonstrate that the kinetic particle-in-cell (PIC) scheme is suitable for modeling the O-X conversion process as the first step toward a more complete simulation of O-X-B heating. The O-X process is considered and simulated with a kinetic particle model for parameters of the TJ-II stellarator using the PIC code, XOOPIC. This code is able to model the non-monotonic density and the magnetic profile of the TJ-II stellarator. It can also statistically represent the self-consistent distribution function of the plasma, which has not been possible in previous fluid models. By considering the electric and magnetic components of launched and reflected waves, the O-mode and X-mode waves can be detected, and the O-X conversion can be demonstrated. In this work, the optimum angle for conversion efficiency, as predicted by the previous theory and experimentally confirmed, is used. Via considering the power of the launched O-mode wave and the converted X-mode wave, the efficiency of 63% for O-X conversion for the optimum theoretical launch angle of 47{sup ?} is obtained, which is in good agreement with efficiencies computed via full-wave simulations.

  15. Abstract Pseudomonas stutzeri OX1 naphthalene-oxi-dation activity is induced 3.0-fold by tetrachloroethylene

    E-Print Network [OSTI]

    Wood, Thomas K.

    et al. 1998); P. stutzeri OX1 is an activated sludge isolate of a wastewater treatment plant (Baggi billion under the Safe Drinking Water Act. These compounds are the most common groundwater pollutants

  16. Pseudonovibos spiralis (Artiodactyla: Bovidae): new information on this enigmatic South-east Asian ox

    E-Print Network [OSTI]

    Timm, Robert M.; Brandt, John H.

    2001-02-01

    until recently. The first of these ‘newly discovered’ ungulates, the saola or Vu Quang ox, Pseudoryx nghetinhensis (Artiodactyla: Bovidae), was found along the Vietnam–Laos border, and is currently known from more than 20 localities in the Vu Quang... Nature Reserve in northern Vietnam and in adjacent Laos (Dung et al., 1993, 1994; Schaller & Rabinowitz, 1995). The large-antlered or giant muntjac, Megamuntiacus vuquangensis (Artiodactyla: Cervidae), was also recently discovered in the Vu Quang Nature...

  17. 28/07/2010 10:43Evolution's parent trap -University of Oxford Page 1 of 2http://www.ox.ac.uk/media/science_blog/100728.html

    E-Print Network [OSTI]

    Gardner, Andy

    28/07/2010 10:43Evolution's parent trap - University of Oxford Page 1 of 2http://www.ox.ac.uk/media/science_blog of these traits are related. I asked Andy about the costs and benefits of intensive parenting: OxSciBlog: What leave the #12;28/07/2010 10:43Evolution's parent trap - University of Oxford Page 2 of 2http://www.ox.ac.uk/media/science_blog

  18. Correlation Between Optical Properties And Chemical Composition Of Sputter-deposited Germanium Cxide (GeOx) Films

    SciTech Connect (OSTI)

    Murphy, Neil R.; Grant, J. T.; Sun, L.; Jones, J. G.; Jakubiak, R.; Shutthanandan, V.; Ramana, Chintalapalle V.

    2014-03-18

    Germanium oxide (GeOx) films were grown on (1 0 0) Si substrates by reactive Direct-Current (DC) magnetron sputter-deposition using an elemental Ge target. The effects of oxygen gas fraction, ? = O2/(Ar + O2), on the deposition rate, structure, chemical composition and optical properties of GeOx films have been investigated. The chemistry of the films exhibits an evolution from pure Ge to mixed Ge + GeO + GeO2 and then finally to GeO2 upon increasing ? from 0.00 to 1.00. Grazing incidence X-ray analysis indicates that the GeOx films grown were amorphous. The optical properties probed by spectroscopic ellipsometry indicate that the effect of ? is significant on the optical constants of the GeOx films. The measured index of refraction (n) at a wavelength (?) of 550 nm is 4.67 for films grown without any oxygen, indicating behavior characteristic of semiconducting Ge. The transition from germanium to mixed Ge + GeO + GeO2 composition is associated with a characteristic decrease in n (? = 550 nm) to 2.62 and occurs at ? = 0.25. Finally n drops to 1.60 for ? = 0.50–1.00, where the films become GeO2. A detailed correlation between ?, n, k and stoichiometry in DC sputtered GeOx films is presented and discussed.

  19. Nitrogen effects on crystallization kinetics of amorphous TiOxNy thin films

    SciTech Connect (OSTI)

    Hukari, Kyle; Dannenberg, Rand; Stach, E.A.

    2001-03-30

    The crystallization behavior of amorphous TiOxNy (x>>y) thin films was investigated by in-situ transmission electron microscopy. The Johnson-Mehl-Avrami-Kozolog (JMAK) theory is used to determine the Avrami exponent, activation energy, and the phase velocity pre-exponent. Addition of nitrogen inhibits diffusion, increasing the nucleation temperature, while decreasing the growth activation energy. Kinetic variables extracted from individual crystallites are compared to JMAK analysis of the fraction transformed and a change of 6 percent in the activation energy gives agreement between the methods. From diffraction patterns and index of refraction the crystallized phase was found to be predominantly anatase.

  20. Effect of filler metal composition on the strength of yttria stabilized zirconia joints brazed with Pd-Ag-CuOx

    SciTech Connect (OSTI)

    Darsell, Jens T.; Weil, K. Scott

    2008-09-08

    The Ag-CuOx system is of interest to be used to be used as an air braze filler metal for joining high temperature electrochemical devices. Previous work has shown that the melting temperatures can be increased by adding palladium to Ag-CuOx and it is expected that this may aid high temperature stability. This work compares the room temperature bend strength of joints made between yttria-stabilized zirconia (YSZ) air brazed using Ag-CuOx without palladium and with 5 and 15mol% palladium additions. It has been found that in general palladium decreases joint strength, especially in low copper oxide compositions filler metals. At high copper oxide contents, brittle fracture through both copper oxide rich phases and the YSZ limits joint strength.

  1. High critical currents in heavily doped (Gd,Y)Ba2Cu3Ox superconductor tapes

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

    Selvamanickam, V.; Gharahcheshmeh, M. Heydari; Xu, A.; Galstyan, E.; Delgado, L.; Cantoni, C.

    2015-01-20

    REBa2Cu3Ox superconductor tapes with moderate levels of dopants have been optimized for high critical current density in low magnetic fields at 77 K, but they do not exhibit exemplary performance in conditions of interest for practical applications, i.e., temperatures less than 50 K and fields of 2–30 T. Heavy doping of REBCO tapes has been avoided by researchers thus far due to deterioration in properties. Here, we report achievement of critical current densities (Jc) above 20 MA/cm2 at 30 K, 3 T in heavily doped (25 mol. % Zr-added) (Gd,Y)Ba2Cu3Ox superconductor tapes, which is more than three times higher thanmore »the Jc typically obtained in moderately doped tapes. Pinning force levels above 1000 GN/m3 have also been attained at 20 K. A composition map of lift factor in Jc (ratio of Jc at 30 K, 3 T to the Jc at 77 K, 0 T) has been developed which reveals the optimum film composition to obtain lift factors above six, which is thrice the typical value. A highly c-axis aligned BaZrO3 (BZO) nanocolumn defect density of nearly 7 × 1011 cm–2 as well as 2–3nm sized particles rich in Cu and Zr have been found in the high Jc films.« less

  2. Centre for the Study of African Economies Department of Economics . University of Oxford . Manor Road Building . Oxford OX1 3UQ

    E-Print Network [OSTI]

    Oxford, University of

    .enquiries@economics.ox.ac.uk . W: www.csae.ox.ac.uk 1 CSAE Working Paper WPS/2014 17 Growth, Inequality, and Poverty in Sub Saharan of income and inequality changes to poverty reduction for a large number of countries in sub Saharan Africa (SSA). The study begins by shedding light on SSA's progress on poverty. Next, it presents data on how

  3. Centre for the Study of African Economies Department of Economics . University of Oxford . Manor Road Building . Oxford OX1 3UQ

    E-Print Network [OSTI]

    Oxford, University of

    .enquiries@economics.ox.ac.uk . W: www.csae.ox.ac.uk CSAE Working Paper WPS/2014 18 Employment Creation, Poverty and the Structure the evidence is reviewed as to how far the more rapid growth of recent years has translated into poverty reduction and how these poverty measures link to job creation. There is evidence that the headcount measure

  4. Constructing Hierarchical Interfaces: TiO2-Supported PtFe-FeOx Nanowires for Room Temperature CO Oxidation

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

    Zhu, Huiyuan; Wu, Zili; Dong, Su; Veith, Gabriel M; Lu, Hanfeng; Zhang, Pengfei; Chai, Songhai; Dai, Sheng

    2015-08-05

    This is a report of a facile approach to constructing catalytic active hierarchical interfaces in one-dimensional (1D) nanostructure, exemplified by the synthesis of TiO2-supported PtFe–FeOx nanowires (NWs). The hierarchical interface, constituting atomic level interactions between PtFe and FeOx within each NW and the interactions between NWs and support (TiO2), enables CO oxidation with 100% conversion at room temperature. We identify the role of the two interfaces by probing the CO oxidation reaction with isotopic labeling experiments. Both the oxygen atoms (Os) in FeOx and TiO2 participate in the initial CO oxidation, facilitating the reaction through a redox pathway. Moreover, themore »intact 1D structure leads to the high stability of the catalyst. After 30 h in the reaction stream, the PtFe–FeOx/TiO2 catalyst exhibits no activity decay. These results provide a general approach and new insights into the construction of hierarchical interfaces for advanced catalysis.« less

  5. PROMPT PHOTONS AND DVCS AT HERA Rutherford Appleton Laboratory, Chilton, DIDCOT, Oxfordshire OX11 0QX, England

    E-Print Network [OSTI]

    PROMPT PHOTONS AND DVCS AT HERA J.C. HART Rutherford Appleton Laboratory, Chilton, DIDCOT, Oxfordshire OX11 0QX, England (on behalf of the ZEUS and H1 collaborations) A recent analysis of prompt­photon cross section at HERA by H1, is also reported. 1 Introduction The production of real photons in high

  6. *Corresponding author: Tel. +44 1865 283490 E-mail address: alan.cocks@eng.ox.ac.uk

    E-Print Network [OSTI]

    Fleck, Norman A.

    a Department of Engineering Science, University of Oxford, Parks Road, Oxford OX1 3PJ, UK b Cambridge University Engineering Department, Trumpington Street, Cambridge CB2 1PZ, UK c Siemens AG, Corporate-based gas turbines. The APS coating comprises an assembly of zirconia splats, with intervening cracks

  7. Multiple Roles of Component Proteins in Bacterial Multicomponent Monooxygenases: Phenol Hydroxylase and Toluene/o-Xylene Monooxygenase from Pseudomonas sp. OX1

    E-Print Network [OSTI]

    Tinberg, Christine E.

    Phenol hydroxylase (PH) and toluene/o-xylene monooxygenase (ToMO) from Pseudomonas sp. OX1 require three or four protein components to activate dioxygen for the oxidation of aromatic substrates at a carboxylate-bridged ...

  8. Zirconia-Supported MoOx Catalysts for the Selective Oxidation of Dimethyl Ether to Formaldehyde: Structure, Redox Properties, and Reaction Pathways

    E-Print Network [OSTI]

    Iglesia, Enrique

    Zirconia-Supported MoOx Catalysts for the Selective Oxidation of Dimethyl Ether to Formaldehyde* Department of Chemical Engineering, UniVersity of California at Berkeley, Berkeley, California 94720 Recei

  9. Highly dispersed SiOx/Al2O3 catalysts illuminate the reactivity of isolated silanol sites

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

    Mouat, Aidan R.; George, Cassandra; Kobayashi, Takeshi; Pruski, Marek; van?Duyne, Richard P.; Marks, Tobin J.; Stair, Peter C.

    2015-09-23

    The reaction of ?-alumina with tetraethylorthosilicate (TEOS) vapor at low temperatures selectively yields monomeric SiOx species on the alumina surface. These isolated (-AlO)3Si(OH) sites are characterized by PXRD, XPS, DRIFTS of adsorbed NH3, CO, and pyridine, and 29Si and 27Al DNP-enhanced solid-state NMR spectroscopy. The formation of isolated sites suggests that TEOS reacts preferentially at strong Lewis acid sites on the ?-Al2O3 surface, functionalizing the surface with “mild” Brønsted acid sites. As a result, for liquid-phase catalytic cyclohexanol dehydration, these SiOx sites exhibit up to 3.5-fold higher specific activity than the parent alumina with identical selectivity.

  10. 23/02/2009 16:02Slime cities & bacteria signals -University of Oxford Page 1 of 2http://www.ox.ac.uk/media/science_blog/090223.html

    E-Print Network [OSTI]

    West, Stuart

    23/02/2009 16:02Slime cities & bacteria signals - University of Oxford Page 1 of 2http://www.ox.ac.uk/media/science_blog in humans: OxSciBlog: What are the social interactions that go on between bacterial cells? Stuart West - University of Oxford Page 2 of 2http://www.ox.ac.uk/media/science_blog/090223.html signalling molecules

  11. Average and local crystal structures of (Ga1–xZnx)(N1–xOx) solid solution nanoparticles

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

    Feygenson, Mikhail; Neuefeind, Joerg C.; Tyson, Trevor A.; Schieber, Natalie; Han, Wei -Qiang

    2015-11-06

    We report the comprehensive study of the crystal structure of (Ga1–xZnx)(N1–xOx) solid solution nanoparticles by means of neutron and synchrotron x-ray scattering. In our study we used four different types of (Ga1–xZnx)(N1–xOx) nanoparticles, with diameters of 10–27 nm and x = 0.075–0.51, which show the narrow energy-band gaps from 2.21 to 2.61 eV. The Rietveld analysis of the neutron diffraction data revealed that the average crystal structure is the hexagonal wurtzite (space group P63mc), in agreement with previous reports on similar bulk materials. The pair-distribution function (PDF) analysis of the same data found that the local structure is more disorderedmore »than the average one. It is best described by the model with a lower symmetry space group P1, where atoms are quasirandomly distorted from their nominal positions in the hexagonal wurtzite lattice.« less

  12. 15/01/2015 20:50Economic games don't show altruism | University of Oxford Page 1 of 3http://www.ox.ac.uk/news/science-blog/economic-games-dont-show-altruism

    E-Print Network [OSTI]

    West, Stuart

    .ac.uk/news/science-blog/economic-games-dont-show-altruism Charvy Narain 15 Jan 2015 Economic games don't show altruism OXFORD SCIENCE BLOG (//WWW.OX.AC.UK/NEWS/SCIENCE-BLOG) Economic 'games (http what these results are likely to mean for the field. OxSciBlog: What do these economic games involve

  13. Development of the ReaxFF reactive force field for mechanistic studies of catalytic selective oxidation processes on BiMoOx

    E-Print Network [OSTI]

    van Duin, Adri

    our mechanistic understanding of catalytic hydrocarbon oxidation sufficiently to suggest modificationsDevelopment of the ReaxFF reactive force field for mechanistic studies of catalytic selective oxidation processes on BiMoOx William A. Goddard III*, Adri van Duin, Kimberly Chenoweth, Mu-Jeng Cheng

  14. Nature, Density, and Catalytic Role of Exposed Species on Dispersed VOx/CrOx/Al2O3 Shuwu Yang, Enrique Iglesia,* and Alexis T. Bell*

    E-Print Network [OSTI]

    Iglesia, Enrique

    6+ favored the primary combustion of propane, which led to low propene selectivity. Thus (ODH) of propane were examined and compared with those for CrOx and VOx dispersed on alumina. VOx for the oxidative dehydrogenation (ODH) of propane to propene,1-25 but reaction rates and selectivities remain too

  15. An experimental and theoretical investigation of the structure and reactivity of bilayered VOx/TiOx/SiO2 catalysts for methanol oxidation

    E-Print Network [OSTI]

    Bell, Alexis

    /TiOx/SiO2 catalysts for methanol oxidation William C. Vining, Anthony Goodrow, Jennifer Strunk, Alexis T Accepted 22 December 2009 Available online 2 February 2010 Keywords: Vanadia Silica Titania Methanol vanadia surface density (0.7 V/nm2 ), the turnover frequency for methanol oxidation to formaldehyde

  16. Centre for the Study of African Economies Department of Economics . University of Oxford . Manor Road Building . Oxford OX1 3UQ

    E-Print Network [OSTI]

    Oxford, University of

    Road Building . Oxford OX1 3UQ T: +44 (0)1865 271084 . F: +44 (0)1865 281447 . E: csae@cgdev.org. Address: Center for Global Development Europe, 54 Wilton Road, London SW1V 1DE Georgetown University success (Alden Wily, 2003; Deininger et al., 2008). As a result of sustained informal growth, unchecked

  17. ICP-PECVD PRODUCTION TOOL FOR INDUSTRIAL AlOX AND Si-BASED PASSIVATION LAYERS B.F.P. Roos1

    E-Print Network [OSTI]

    TECHNOLOGIES AG, Hanauer Landstrasse 103, D-63796 Kahl am Main, Germany 2 Institute for Solar Energy ResearchICP-PECVD PRODUCTION TOOL FOR INDUSTRIAL AlOX AND Si-BASED PASSIVATION LAYERS B.F.P. Roos1 , T Hamelin (ISFH), Am Ohrberg 1, D-31860 Emmerthal, Germany Correspondent author: bjoern

  18. In-Line-Test of Variability and Bit-Error-Rate of HfOx-Based Resistive Memory

    E-Print Network [OSTI]

    Ji, B L; Ye, Q; Gausepohl, S; Deora, S; Veksler, D; Vivekanand, S; Chong, H; Stamper, H; Burroughs, T; Johnson, C; Smalley, M; Bennett, S; Kaushik, V; Piccirillo, J; Rodgers, M; Passaro, M; Liehr, M

    2015-01-01

    Spatial and temporal variability of HfOx-based resistive random access memory (RRAM) are investigated for manufacturing and product designs. Manufacturing variability is characterized at different levels including lots, wafers, and chips. Bit-error-rate (BER) is proposed as a holistic parameter for the write cycle resistance statistics. Using the electrical in-line-test cycle data, a method is developed to derive BERs as functions of the design margin, to provide guidance for technology evaluation and product design. The proposed BER calculation can also be used in the off-line bench test and build-in-self-test (BIST) for adaptive error correction and for the other types of random access memories.

  19. Low pressure CO? hydrogenation to methanol over gold nanoparticles activated on a CeOx/TiO? interface

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

    Yang, Xiaofang; Boscoboinik, J. Anibal; Kattel, Shyam; Senanayake, Sanjaya D.; Nie, Xiaowa; Graciani, Jesus; Rodriguez, Jose A.; Liu, Ping; Stacchiola, Dario J.; Chen, Jingguang G.

    2015-07-28

    Capture and recycling of CO? into valuable chemicals such as alcohols could help mitigate its emissions into the atmosphere. Due to its inert nature, the activation of CO? is a critical step in improving the overall reaction kinetics during its chemical conversion. Although pure gold is an inert noble metal and cannot catalyze hydrogenation reactions, it can be activated when deposited as nanoparticles on the appropriate oxide support. In this combined experimental and theoretical study, it is shown that an electronic polarization at the metal–oxide interface of Au nanoparticles anchored and stabilized on a CeOx/TiO? substrate generates active centers formore »CO? adsorption and its low pressure hydrogenation, leading to a higher selectivity toward methanol. In conclusion, this study illustrates the importance of localized electronic properties and structure in catalysis for achieving higher alcohol selectivity from CO? hydrogenation.« less

  20. Hierarchical heterogeneity at the CeOx-TiO? interface: Electronic and geometric structural influence on the photocatalytic activity of oxide on oxide nanostructures

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

    Luo, Si [Brookhaven National Lab. (BNL), Upton, NY (United States); Nguyen-Phan, Thuy-Duong [Brookhaven National Lab. (BNL), Upton, NY (United States); Johnston-Peck, Aaron C. [Brookhaven National Lab. (BNL), Upton, NY (United States); Barrio, Laura [CSIC - Inst. de Catalisis y Petroleoquimica, Madrid (Spain); Sallis, Shawn [Binghamton Univ., NY (United States); Arena, Dario A. [Brookhaven National Lab. (BNL), Upton, NY (United States); Kundu, Shankhamala [Brookhaven National Lab. (BNL), Upton, NY (United States); Xu, Wenqian [Brookhaven National Lab. (BNL), Upton, NY (United States); Piper, Louis F. J. [Binghamton Univ., NY (United States); Stach, Eric A. [Brookhaven National Lab. (BNL), Upton, NY (United States); Polyansky, Dmitry E. [Brookhaven National Lab. (BNL), Upton, NY (United States); Fujita, Etsuko [Brookhaven National Lab. (BNL), Upton, NY (United States); Rodriguez, José A. [Brookhaven National Lab. (BNL), Upton, NY (United States); CSIC - Inst. de Catalisis y Petroleoquimica, Madrid (Spain); Senanayake, Sanjaya D. [Brookhaven National Lab. (BNL), Upton, NY (United States)

    2015-01-27

    Mixed oxide interfaces are critical for delivering active components of demanding catalytic processes such as the photo-catalytic splitting of water. We have studied CeOxTiO? catalysts with low ceria loadings of 1 wt%, 3 wt% and 6 wt% that were prepared with wet impregnation methods to favor a strong interaction between CeOx and TiO?. In these materials the interfaces between CeOx-TiO? have been sequentially loaded (1%, 3% and 6%), with and without Pt (0.5 wt%). The structure and properties of the catalysts were characterized using several X-ray and electron based techniques including XRD, XPS, UPS, NEXAFS, UV-Vis and HR-STEM/STEM-EELS, to unravel the local morphology, bulk structure, surface states and electronic structure. The combination of all these techniques allow us to analyze in a systematic way the complete structural and electronic properties that prevail at the CeOx-TiO? interface. Fluorite structured nano crystallites of ceria on anatase-structured titania were identified by both XRD and NEXAFS. A sequential increasing of the CeOx loading led to the formation of clusters, then plates and finally nano particles in a hierarchical manner on the TiO? support. The electronic structures of these catalysts indicate that the interaction between TiO? and CeO? is closely related to the local morphology of nanostructured CeO?. Ce³? cations were detected at the surface of CeO? and at the interface of the two oxides. In addition, the titania is perturbed by the interaction with ceria and also with Pt. The photocatalytic activity for the splitting of H?O using UV light was measured for these materials and correlated with our understanding of the electronic and structural properties. Optimal catalytic performance and photo response results were found for the 1 wt% CeOx-TiO? catalyst where low dimensional geometry of the ceria provided ideal electronic and geometrical properties. The structural and electronic properties of the interface were critical for the photocatalytic performance of this mixed-oxide nanocatalyst system.

  1. Hierarchical heterogeneity at the CeOx-TiO? interface: Electronic and geometric structural influence on the photocatalytic activity of oxide on oxide nanostructures

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

    None

    2015-01-13

    Mixed oxide interfaces are critical for delivering active components of demanding catalytic processes such as the photo-catalytic splitting of water. We have studied CeOxTiO? catalysts with low ceria loadings of 1 wt%, 3 wt% and 6 wt% that were prepared with wet impregnation methods to favor a strong interaction between CeOx and TiO?. In these materials the interfaces between CeOx-TiO? have been sequentially loaded (1%, 3% and 6%), with and without Pt (0.5 wt%). The structure and properties of the catalysts were characterized using several X-ray and electron based techniques including XRD, XPS, UPS, NEXAFS, UV-Vis and HR-STEM/STEM-EELS, to unravelmore »the local morphology, bulk structure, surface states and electronic structure. The combination of all these techniques allow us to analyze in a systematic way the complete structural and electronic properties that prevail at the CeOx-TiO? interface. Fluorite structured nano crystallites of ceria on anatase-structured titania were identified by both XRD and NEXAFS. A sequential increasing of the CeOx loading led to the formation of clusters, then plates and finally nano particles in a hierarchical manner on the TiO? support. The electronic structures of these catalysts indicate that the interaction between TiO? and CeO? is closely related to the local morphology of nanostructured CeO?. Ce³? cations were detected at the surface of CeO? and at the interface of the two oxides. In addition, the titania is perturbed by the interaction with ceria and also with Pt. The photocatalytic activity for the splitting of H?O using UV light was measured for these materials and correlated with our understanding of the electronic and structural properties. Optimal catalytic performance and photo response results were found for the 1 wt% CeOx-TiO? catalyst where low dimensional geometry of the ceria provided ideal electronic and geometrical properties. The structural and electronic properties of the interface were critical for the photocatalytic performance of this mixed-oxide nanocatalyst system.« less

  2. GeOx/Reduced Graphene Oxide Composite as an Anode for Li-ion Batteries: Enhanced Capacity via Reversible Utilization of Li2O along with Improved Rate Performance

    SciTech Connect (OSTI)

    Lv, Dongping; Gordin, Mikhail; Yi, Ran; Xu, Terrence (Tianren); Song, Jiangxuan; Jiang, Yingbing; Choi, Daiwon; Wang, Donghai

    2014-09-01

    A self-assembled GeOx/reduced graphene oxide (GeOx/RGO) composite, where GeOx nanoparticles were grown directly on reduced graphene oxide sheets, was synthesized via a facile one-step reduction approach and studied by X-ray diffraction, transmission electron microscopy, energy dispersive X-ray spectroscopy, electron energy loss spectroscopy elemental mapping, and other techniques. Electrochemical evaluation indicates that incorporation of reduced graphene oxide enhances both the rate capability and reversible capacity of GeOx, with the latter being due to the RGO enabling reversible utilization of Li2O. The composite delivers a high reversible capacity of 1600 mAhg-1 at a current density of 100 mAg-1, and still maintains a capacity of 410 mAhg-1 at a high current density of 20 Ag-1. Owing to the flexible reduced graphene oxide sheets enwrapping the GeOx particles, the cycling stability of the composite was also improved significantly. To further demonstrate its feasibility in practical applications, the synthesized GeOx/RGO composite anode was successfully paired with a high voltage LiNi0.5Mn1.5O4 cathode to form a full cell, which showed good cycling and rate performance.

  3. Accurate Measurement of 5-Methylcytosine and 5-Hydroxymethylcytosine in Human Cerebellum DNA by Oxidative Bisulfite on an Array (OxBS-Array)

    E-Print Network [OSTI]

    Field, Sarah F.; Beraldi, Dario; Bachman, Martin; Stewart, Sabrina K.; Beck, Stephan; Balasubramanian, Shankar

    2015-02-23

    , the average loss of material (as measured by Qubit after bisulfite treatment, according to the manufacturers specifications) for oxBS was 44% and for BS was 38%. The samples were then run on the Infinium 450K chip by Genome Services at the Department... to the manufacturers specifica- tions (http://www.zymoresearch.com/downloads/dl/file/id/126/e2026i.pdf). Analysis The raw idat files produced by the Illumina platform were analysed with the R/Bioconductor package minfi[25]. The applied normalization method...

  4. Total ionizing dose effect of ?-ray radiation on the switching characteristics and filament stability of HfOx resistive random access memory

    SciTech Connect (OSTI)

    Fang, Runchen; Yu, Shimeng; Gonzalez Velo, Yago; Chen, Wenhao; Holbert, Keith E.; Kozicki, Michael N.; Barnaby, Hugh

    2014-05-05

    The total ionizing dose (TID) effect of gamma-ray (?-ray) irradiation on HfOx based resistive random access memory was investigated by electrical and material characterizations. The memory states can sustain TID level ?5.2 Mrad (HfO{sub 2}) without significant change in the functionality or the switching characteristics under pulse cycling. However, the stability of the filament is weakened after irradiation as memory states are more vulnerable to flipping under the electrical stress. X-ray photoelectron spectroscopy was performed to ascertain the physical mechanism of the stability degradation, which is attributed to the Hf-O bond breaking by the high-energy ?-ray exposure.

  5. Microstructural evolutions in converting epitaxial Tl2Ba2CaCu2Ox thin films to epitaxial HgBa2CaCu2O6+delta thin films

    E-Print Network [OSTI]

    Wu, Judy; Siegal, M. P.; Xie, Y. Y.; Aytug, T.; Fang, L.

    2003-02-01

    Superconducting HgBa2CaCu2O6+delta (Hg-1212) thin films were obtained from Tl2Ba2CaCu2Ox (Tl-2212) precursor films using a cation-exchange process. In this process, Tl cations on the precursor lattice were thermally excited and then replaced with Hg...

  6. 28/05/2009 16:25Global links will breed more dangerous parasites -University of Oxford Page 1 of 2http://www.ox.ac.uk/media/news_stories/2009/090528_3.html

    E-Print Network [OSTI]

    West, Stuart

    28/05/2009 16:25Global links will breed more dangerous parasites - University of Oxford Page 1 of 2http://www.ox.ac.uk/media/news_stories/2009/090528_3.html Global links will breed more dangerous that as the world becomes more connected so natural selection will favour more dangerous parasites. The team, from

  7. 15N2 formation and fast oxygen isotope exchange during pulsed 15N18O exposure of MnOx/CeO2

    SciTech Connect (OSTI)

    Kwak, Ja Hun; Szanyi, Janos

    2014-12-23

    Pulsing 15N18O onto an annealed 1% Mn16Ox/Ce16O2 catalyst resulted in very fast oxygen isotope exchange and 15N2 formation at 295 K. In the 1st 15N18O pulse, due to the presence of large number of surface oxygen defects, extensive 15N218O and 15N2 formations were observed. In subsequent pulses oxygen isotope exchange dominated as a result of highly labile oxygen in the oxide. We gratefully acknowledge the US Department of Energy (DOE), Office of Energy Efficiency and Renewable Energy/Vehicle Technologies Program for the support of this work. The research described in this paper was performed at the Environmental Molecular Sciences Laboratory (EMSL), a national scientific user facility sponsored by the DOE’s Office of Biological and Environmental Research and located at Pacific Northwest National Laboratory (PNNL). PNNL is operated for the US DOE by Battelle.

  8. High Catalytic Activity of Au/CeOx/TiO2(110) Controlled by the Nature of the Mixed Metal Oxide at the Nanometer Level

    SciTech Connect (OSTI)

    Park, J.; Graciani, J; Evans, J; Stacchiola, D; Ma, S; Liu, P; Nambu, A; Sanz, J; Hrbek, J; et. al.

    2009-01-01

    Mixed-metal oxides play a very important role in many areas of chemistry, physics, materials science, and geochemistry. Recently, there has been a strong interest in understanding phenomena associated with the deposition of oxide nanoparticles on the surface of a second (host) oxide. Here, scanning tunneling microscopy, photoemission, and density-functional calculations are used to study the behavior of ceria nanoparticles deposited on a TiO2(110) surface. The titania substrate imposes nontypical coordination modes on the ceria nanoparticles. In the CeOx/TiO2(110) systems, the Ce cations adopt an structural geometry and an oxidation state (+3) that are quite different from those seen in bulk ceria or for ceria nanoparticles deposited on metal substrates. The increase in the stability of the Ce3+ oxidation state leads to an enhancement in the chemical and catalytic activity of the ceria nanoparticles. The codeposition of ceria and gold nanoparticles on a TiO2(110) substrate generates catalysts with an extremely high activity for the production of hydrogen through the water-gas shift reaction (H2O + CO ? H2 + CO2) or for the oxidation of carbon monoxide (2CO + O2 ? 2CO2). The enhanced stability of the Ce3+ state is an example of structural promotion in catalysis described here on the atomic level. The exploration of mixed-metal oxides at the nanometer level may open avenues for optimizing catalysts through stabilization of unconventional surface structures with special chemical activity.

  9. Biologically Guided Radiation Therapy (BGRT)Biologically Guided Radiation Therapy (BGRT) Relative Biologically EffectivenessRelative Biologically Effectivenessg yg y

    E-Print Network [OSTI]

    Stewart, Robert D.

    Self renewal and Differentiation101088 ss((fibrosis, ...)) NeoplasticNeoplastic Transformation and chromosomal aberrations)) ClonalClonal ExpansionExpansion 101077 ss 101088 ss #12;Purdue University School to aout Bragg peak (SOBP) due to a mixture of low, intermediate and high energy protonsmixture of low

  10. Cobalt-iron red-ox behavior in nanostructured La{sub 0.4}Sr{sub 0.6}Co{sub 0.8}Fe{sub 0.2}O{sub 3-{delta}} cathodes

    SciTech Connect (OSTI)

    Soldati, Analia L.; Baque, Laura; Napolitano, Federico; Serquis, Adriana

    2013-02-15

    Nano-sized La{sub 0.4}Sr{sub 0.6}Co{sub 0.8}Fe{sub 0.2}O{sub 3-{delta}} (LSCF) perovskite samples (prepared by a conventional acetate route and a novel acetate synthesis with HMTA additives), were tested simulating a red-ox cycle. The crystallography was studied by X-ray Powder Diffraction (XPD) and the changes in the oxidation state of the perovskite B-site were evaluated by synchrotron X-ray Absorption Near Edge Spectroscopy (XANES). After a reducing treatment, LSFC particles show the appearance of a new phase that coexists with the original one. The structural change is accompanied by a Co and Fe formal oxidation states decrease, although Fe remains always closer to 4+ and Co closer to 3+. The treatment produces a B-site valence average reduction from 3.52+ to 3.26+ and the formation of oxygen vacancies. A re-oxidation treatment under O{sub 2} rich atmosphere at 800 Degree-Sign C for 10 h shows that the change is reversible and independent of the two chemical methods used to synthesize the LSCF nano-particles. - Graphical abstract: XANES and XPD measurements in nanostructured LSCF before (black) and after (red/green) a red/ox cycle. Highlights: Black-Right-Pointing-Pointer Red-ox treatments in LSCF nano-particles cause a reversible reaction. Black-Right-Pointing-Pointer XPD analyses show that a new 'reduced' phase coexist with the oxidize one. Black-Right-Pointing-Pointer The B-site formal oxidation state decreases and the {delta} increases upon reduction. Black-Right-Pointing-Pointer Fe remains in a higher valence (closer to 4+) than Co (close to 3+). Black-Right-Pointing-Pointer The behavior seems to be independent of the synthesis method used.

  11. Nanoscale cation motion in TaOx, HfOx and TiOx memristive systems

    E-Print Network [OSTI]

    Yildiz, Bilge

    these memristive devices and formulating appropriate design rules. Based on distinct fundamental switchingRAM devices lies in their low power consumption, subnanose- cond switching times9 and a conceptual scalability,5, Bilge Yildiz4,5, Rainer Waser1,6 and Ilia Valov1,6 * A detailed understanding of the resistive switching

  12. National Beef Quality Audit-2011: In-Plant Survey of Targeted Carcass Characteristics Related to Quality, Quantity, Value, and Marketing of Fed Steers and Heifers 

    E-Print Network [OSTI]

    Moore, Melanie 1989-

    2012-11-26

    . Mean USDA YG traits were USDA YG (2.9), HCW (374.0 kg), AFT (1.3 cm), LM area (88.8 cm2), and KPH (2.3%); Frequencies of USDA YG distributions were YG 1 (12.4%), YG 2 (41.0%), YG 3 (36.3%), YG 4 (8.6%), and YG 5 (1.6%). Mean USDA QG traits were USDA QG...

  13. The language of Milton's Comus 

    E-Print Network [OSTI]

    Barnett, Frank Washburn

    1965-01-01

    the University Caxriex, " written in Milton's student days at Cambridge, is in marked contxast tc the epicx Here lies old ~b yg, Death hath broke his girt, And here alas, Sarah laid him in the dirt? Ox els the way being foul, twenty to one, Hots here stuck.... To appreciate the poem fully' of course? it would be necessary to share with ~The to c t i P t d e (Cambridge& 1938)g pe ~ Milcon and his classmaces cheir fsmiliaricy wich the old driver and the xouCe he Cx'avaled between the college and tendon. kkone...

  14. Preliminary results obtained with an apparatus for studying the effect of carbon dioxide on consumption of oxygen by respiring cotton roots 

    E-Print Network [OSTI]

    Hinesly, Thomas Daniel

    1956-01-01

    . ' diX'~ X'nsion. and 9ie xate of, oonsuaybion'of 'oxygen v@th the evolution, c4' . eax"%on-dioxide by biologiosX 'msp~5i'on+ . I Xnedegnste, Wainagsp poof' soil stPQotoxe ox" Xsx'gk s~. ~ nants . nf. : ~~, 'cteeoxXpoeable:ox genie xsxtex isis~ 'alan...'~', . ', , MC~1@Jtj@$48P. .WQ, : (Q2yg )' g' (Oyer'g6$' S~ O'QW~'6LBg, e x gsmteq . ovex' a}. 3, : yxxgi exx. eeIyep4Xoxx" amC. , eax, 'ben ', KMc lkheppPIon M RIXc~~Qlftiex'Bp;FBI x GQpfpBtex'q? ". ' ' jvytte5te'eAexxl~teC:, 6~@, 'Qie "4 eat''xxexxt 4aii...

  15. National Beef Quality Audit - 2011: Survey of Instrument Grading Assessments of Beef Carcass Characteristics 

    E-Print Network [OSTI]

    Gray, Gatlan 1989-

    2012-11-16

    attributes and trends from carcasses representing approximately 8.5% of the U.S. fed steer and heifer population. Mean yield traits were: YG (2.86), HCW (371.3 kg), FT (1.19 cm.), and LM area (88.39 cm^2). The YG distribution was YG 1 (15.7%), YG 2 (41...

  16. More details at: www.ox.ac.uk/funding

    E-Print Network [OSTI]

    Oxford, University of

    £20,001­£25,000 £3,000 £25,001­£30,000 £2,000 £30,001­£35,000 £1,500 £35,001­£40,000 £1,000 £40,001­c.£42,620 £500 c.£42,621 + £0 Oxford Bursary UK/EU undergraduates starting a course from October 2015 to £4,500 per year for UK and EU undergraduates from lower-income households starting in 2015­16.* www

  17. OxCORT v4 Quick Guide Tutorial Reports

    E-Print Network [OSTI]

    Wallace, Mark

    the appropriate option from the drop-down. 6. Select the appropriate Term and Year. 7. Enter the usernames into four further topics: · Search for reports pg 2 · To view or edit a report pg 2 · To complete a Tutorial will allow you to search for, view, edit, submit, delete, clone, print, email from, and export data from both

  18. Modelling Traceability in the Forestry Wood Supply Chain

    E-Print Network [OSTI]

    Modelling Traceability in the Forestry Wood Supply Chain Antti Sirkka University of Tampere TietoEnator Forest & Energy Oy Kalevantie 4, 33014 Tampere, Finland Häkiläpolku 3 A, 33101 Tampere, Finland antti

  19. Understanding orchestrated chemical reactions in toluene/o-xylene monooxygenase from pseudomonas sporium OX1

    E-Print Network [OSTI]

    Song, Woon Ju

    2011-01-01

    Chapter 1. Geometric and Functional Versatility of Carboxylate-Bridged Nonheme- Diiron Motifs: sMMO and ToMO. Several metalloenzymes utilize a carboxylate-bridged non-heme diiron motif for dioxygen activation. Despite their ...

  20. Thermodynamic evaluation of the CoOx-CrO1.5 system Introduction

    E-Print Network [OSTI]

    are of great interest in Solid Oxide Fuel Cell (SOFC) technology. This is due to limitations in performance Fuel Cells and Solid State Chemistry Department, Risø National Laboratory, DTU, Denmark * jonas, there is an uncertainty in the present optimization for this area. Fig. 4 shows the calculated temperature dependence

  1. Large voltage-induced modification of spin-orbit torques in Pt/Co/GdOx

    SciTech Connect (OSTI)

    Emori, Satoru Bauer, Uwe; Woo, Seonghoon; Beach, Geoffrey S. D.

    2014-12-01

    We report on large modifications of current-induced spin-orbit torques in a gated Pt/Co/Gd-oxide microstrip due to voltage-driven O{sup 2?} migration. The Slonczewski-like and field-like torques are quantified using a low-frequency harmonic technique based on the polar magneto-optical Kerr effect. Voltage-induced oxidation of Co enhances the Slonczewski-like torque by as much as an order of magnitude and simultaneously reduces the anisotropy energy barrier by a factor of ?5. Such magneto-ionic tuning of interfacial spin-orbit effects may significantly enhance the efficiency of magnetization switching and provide additional degrees of freedom in spintronic devices.

  2. Ancient DNA analyses exclude humans as the driving force behind late Pleistocene musk ox (Ovibos

    E-Print Network [OSTI]

    Suchard, Marc A.

    of Sciences, Moscow 119071, Russia; c Paleogenetics and Molecular Evolution, Institut de Génomique, France; d Zoological Institute, Russian Academy of Sciences, St. Petersburg 199034, Russia; e Department Institute of Plant and Animal Ecology, Urals Branch of the Russian Academy of Sciences, Ekaterinburg 620144

  3. Some lessons learned from 20 years in RedOx Flow Battery R&D

    E-Print Network [OSTI]

    industrials, VCs, DOE, DOD and EPA 33,000 ft. facility for laboratory, engineering, rapid prototyping Engineering Chemical Engineering, CFD, Stress, Heat, Current flow Rapid prototyping Pilot plant design membranes and membrane supports Materials testing and establishing QAS's Electrolytes Pumps, pipes

  4. Complex catalytic behaviors of CuTiOx mixed-oxide during CO oxidation

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfate Reducing BacteriaConnect Collider Tests ofO y (Journal Article) |

  5. Low Cost SiOx-Graphite and Olivine Materials | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankADVANCED MANUFACTURING OFFICE INDUSTRIALU.S.Leadership on CleanUpListSummaryDepartment10 DOE Vehicle

  6. Low Cost SiOx-Graphite and Olivine Materials | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankADVANCED MANUFACTURING OFFICE INDUSTRIALU.S.Leadership on CleanUpListSummaryDepartment10 DOE Vehicle09

  7. Low Cost SiOx-Graphite and High Voltage Spinel Cathode | Department of

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on DeliciousMathematicsEnergyInterested Parties - WAPA PublicLED1,400 Jobs |Inc. | Department of Energy

  8. A study of conception rates resulting from natural and artificial breeding of dairy cattle in Texas 

    E-Print Network [OSTI]

    Burleson, Richard Earl

    1952-01-01

    48 8 i, OO'~34 5" "3d '+~M"' OXAVXC8 p@X~KOf3PX $7 DAM" 'Q@Vjl4 M 4~PA USZV8'~B!. (p?' boX'4 8?tx '5 4x' cod 8 t"' ~abo -'igGY o". u~icczoo ""0?438 N&x'8 xbo xa8&'2t of a&i M~$ 88"V. -'Clog 18 P~I88X'8 . vbGXi K @ O~P? COOCOIVOB 8'h ''C3. lg tb..., . '-p88 '~- yg &8 fe8tgooe ~, , 4W ~ ~:eieeg+e4~ C~ Bn@ BSXO (/) 'i5'Ci& htMggio ef 88~4K+@X XOX8BM~ig X%~8@&8 elf 7&ki. ?a @OX@ f~Q6 i. boy Qg Tio@ CCzl4 QXTCQ'. VQ2 bg tb(9 f: X'85 8QLKiLCB 8)16 GpNg Oig pSX" COOQ bog CC%06$VRQ Q Xbo fXfQ~ 58...

  9. Lecture Notes 2. 1 Positive Dimensional Varieties

    E-Print Network [OSTI]

    's Nullstellensatz, we have that g = 0 strictly follows from h1, . . . , hn if and only if m 1 such that gm h1 such that gm h1, . . . , ht if and only if 1 h1, . . . , ht, 1 - yg k[x1, . . . , xn, y]. Proof. To prove the equivalence, on one hand, if gm h1, . . . , hn then 1 = ym gm + (1 - ym gm ) = ym gm + (1 - yg)(1 + yg

  10. Quantifying global contrail-cirrus Ismail, M R T (ismail@atm.ox.ac.uk) & Grainger, R G

    E-Print Network [OSTI]

    Oxford, University of

    . Input data Two sets are needed for contrail-cirrus coverage and subsequent microphysical modellingk data set [Eyers et al., 2004] which covers 2002 (Figure 2). - Physical parameters (temperature, humidity and pressure) are available from ECMWF ERA40 data sets (Figure 3). Figure 2. From the AERO2k

  11. Dioxygen activation and substrate hydroxylation by the hydroxylase component of toluene/O-xylene monooxygenase from pseudomonas sporium OX1

    E-Print Network [OSTI]

    Murray, Leslie Justin

    2007-01-01

    Non-heme carboxylate-bridged diiron centers in the hydroxylase components of the bacterial multicomponent monooxygenases activate dioxygen at structurally homologous active sites. Catalysis requires the management of four ...

  12. CAROLYN R. MNICHOWICZ P O B OX 6 06 M ENO MO N I E, WI 54 7 51

    E-Print Network [OSTI]

    Wu, Mingshen

    the Dunn County Criminal Justice Collaboration Council Review policies and practices and monitor need Development and Family Studies May, 2003 University Wisconsin Stout Menomonie, WI WORK EXPERIENCE September in corrections and court programming Criminal Justice Collaboration Council Evaluation Subcommittee Chair

  13. OxRAM-based Non Volatile Flip-Flop in 28nm FDSOI N. Jovanovi1,3,4

    E-Print Network [OSTI]

    Zakhor, Avideh

    -M. Portal2 , B. Nikoli3 , L. Naviner4 1 CEA, LETI, Minatec campus, Grenoble 38054, France, email: natalija

  14. Special Publication No. 3, Ticks And Tickborne Diseases, I. Genera And Species Of Ticks, Part 3. Genera O-X 

    E-Print Network [OSTI]

    Doss, Mildred A.; Farr, Marion M.; Roach, Katharine F.; Anastos, George

    1974-01-01

    OR NITHODOROS. - -Continued Nicolle, ?. & Anderson, ?. W. , (1926?), 197-198 (& relapsing fever) Nicolle, C. , and Anderson, C. W. , (1932D), 267-276 Nuttall, G. H. F. , (1908B), 385-403 Nuttall, G. H. F. , (1916A), 294-337 Nuttall, G. H. F., Warburton...

  15. Some Lessons Learned from 20 Years in RedOx Flow Battery R&d | Department

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankADVANCED MANUFACTURINGEnergy BillsNo.Hydrogen4EnergySolid State LightingDepartmentThe Creditof

  16. Weitere Kolloquiumstermine sind im WWW abrufbar. Fakultt II Informatik, Wirtschafts-und

    E-Print Network [OSTI]

    Damm, Werner

    materials ­InOx and ZnOx- and their compounds will be presented with respect of their optical, structural

  17. NOAAINMFS Developments u.s., Brazil Agree on Shrimp Conservation

    E-Print Network [OSTI]

    , formalizes an agreement ~ith Brazil under which the Brazilian Go\\ern- ment has, ~ith the United tateNOAAINMFS Developments u.s., Brazil Agree on Shrimp Conservation The Commerce Department'.., a with Brazil dealing ~ith the con enation of certain shrimp resources locateu off Brazil. The Act, igned

  18. Corso di Laurea in Ingegneria Meccanica Anno Accademico 2011/2012

    E-Print Network [OSTI]

    Demeio, Lucio

    di raggio R e centro C rotola senza strisciare sull'asse Ox del piano cartesiano O(x, y). Un'asta AB' asse Ox con vincolo liscio. Determinare per via geometrica il centro istantaneo di rotazione dell, presa come asse Ox di un sistema cartesiano nel piano verticale O(x, y). Due molle di costante elastica

  19. Report no. 01/15 Algorithm Developments for

    E-Print Network [OSTI]

    Pierce, Niles A.

    Laboratory, Oxford OX1 3QD Niles A. Pierce niles@caltech.edu Applied and Computational Mathematics University Computing Laboratory Numerical Analysis Group Wolfson Building Parks Road Oxford, England OX1 3QD@comlab.ox.ac.uk Mihai C. Duta mcd@comlab.ox.ac.uk Jens-Dominik Muller jdm@comlab.ox.ac.uk Oxford University Computing

  20. The Molecular and Physiological Basis for Temperature Mediated Regulation of Dwarfness in Tifdward Bermudagrass 

    E-Print Network [OSTI]

    Abernathy, Scott

    2014-04-03

    of gibberellins in conditional dwarfism, expression patterns for GA20ox1, GA20ox2, GA3ox, GA2oxa, GA2oxb and GAMyb were analyzed. Under optimal temperatures, GA20ox2 and GA3ox expression were higher and GA2oxa expression was lower in TD than NM. Similar...

  1. ABSTRACTS OF PAPERS PUBLISHED

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

    D.V. Shetty, S.J. Yennello, K. Wang, Y.G. Ma, Nucl. Phys. A837, 163 (2010). NIMROD-ISiS, A versatile tool for studying the Isotopic Degree of Freedom in Heavy Ion Collisions,...

  2. NMR Studies of DNA Oligomerers and Their Interactions with Minor Groove Binding Ligands

    E-Print Network [OSTI]

    Fagan, P.A.

    2010-01-01

    5178-5182. Gao, Y.G. , Sriram, M . , Denny, W.A. & Wang,Acids Res. 23, 1576-1583. Sriram, M . , van der Marel,Biochemistry 31, 11823-11834. Sriram, M . , Yang, D. , Gao,

  3. ENERGY & ENVIRONMENT DIVISION ANNUAL REPORT, 1977

    E-Print Network [OSTI]

    Budnitz, R.J.

    2011-01-01

    trace elements in coal fly ash (yg! g 20 unless otherwiseman- samples .g. , coal fly ash sludge pond residues), been1633, Trace Elements in Coal Fly Ash, and serves as an

  4. Journal of Power Sources 124 (2003) 197203 Electrochemical characterization of a polypyrrole/Co0.2CrOx composite

    E-Print Network [OSTI]

    Popov, Branko N.

    2003-01-01

    such as polypyrrole, polyaniline and polythiophene have attracted attention as electrodes in batteries and super capacitors [7,8]. Polyaniline and polypyrrole (PPy) have been used in lithium ion batteries [9,10]. Apart

  5. Transactions in GIS, 2004, 8(3): 351366 Blackwell Publishing Ltd. 2004. 9600 Garsington Road, Oxford OX4 2DQ, UK and

    E-Print Network [OSTI]

    Sengupta, Raja

    Transactions in GIS, 2004, 8(3): 351­366 © Blackwell Publishing Ltd. 2004. 9600 Garsington Road the incorporation of geographical and environmental modeling with GIS requires software support for storage GIS software. Two complementary approaches have been used to manage the spatial and temporal

  6. Transactions in GIS, 2005, 9(2): 223245 Blackwell Publishing Ltd. 2005. 9600 Garsington Road, Oxford OX4 2DQ, UK and

    E-Print Network [OSTI]

    Yuan, May

    Transactions in GIS, 2005, 9(2): 223­245 © Blackwell Publishing Ltd. 2005. 9600 Garsington Road of these snapshots can provide information about changes to the phenomena of interest. However, conventional GIS data that exhibit the spatiotemporal characteristics of interest can be identified in a GIS database. To this end

  7. Mechanistic insights of ethanol steam reforming over Ni-CeOx(111): The importance of hydroxyl groups for suppressing coke formation

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

    Liu, Zongyuan; Senanayake, Sanjaya D.; Duchon, Tomas; Wang, Huanru; Peterson, Erik W.; Zhou, Yinghui; Luo, Si; Zhou, Jing; Matolin, Vladimir; Stacchiola, Dario J.; et al

    2015-07-10

    We have studied the reaction of ethanol and water over Ni–CeO2-x(111) model surfaces to elucidate the mechanistic steps associated with the ethanol steam reforming (ESR) reaction. Our results provide insights about the importance of hydroxyl groups to the ESR reaction over Ni-based catalysts. Systematically, we have investigated the reaction of ethanol on Ni–CeO2-x(111) at varying Ce³? concentrations (CeO1.8–2.0) with absence/presence of water using a combination of soft X-ray photoelectron spectroscopy (sXPS) and temperature-programmed desorption (TPD). Consistent with previous reports, upon annealing, metallic Ni formed on reduced ceria while NiO was the main component on fully oxidized ceria. Ni? is themore »active phase leading to both the C–C and C–H cleavage of ethanol but is also responsible for carbon accumulation or coking. We have identified a Ni?C phase that formed prior to the formation of coke. At temperatures above 600K, the lattice oxygen from ceria and the hydroxyl groups from water interact cooperatively in the removal of coke, likely through a strong metal–support interaction between nickel and ceria that facilitates oxygen transfer.« less

  8. Developmental Science 9:5 (2006), pp 490497 2006 The Authors. Journal compilation 2006 Blackwell Publishing Ltd, 9600 Garsington Road, Oxford OX4 2DQ, UK and

    E-Print Network [OSTI]

    Handy, Todd C.

    2006-01-01

    readily. These results point to important differences in the perceptual reality of younger and older in a different way from adults, although it has historically been difficult to document the percep- tual reality of processing control (often referred to as `automatic' or unconscious versus `controlled' or conscious

  9. The influence of nano-architectured CeOx supports in RhPd/CeO? for the catalytic ethanol steam reforming reaction

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

    Divins, N. J.; Senanayake, S. D.; Casanovas, A.; Xu, W.; Trovarelli, A.; Llorca, J.

    2015-01-19

    The ethanol steam reforming (ESR) reaction has been tested over RhPd supported on polycrystalline ceria in comparison to structured supports composed of nanoshaped CeO? cubes and CeO? rods tailored towards the production of hydrogen. At 650-700 K the hydrogen yield follows the trend RhPd/CeO?-cubes > RhPd/CeO? -rods > RhPd/CeO?- polycrystalline, whereas at temperatures higher than 800 K the catalytic performance of all samples is similar and close to the thermodynamic equilibrium. The improved performance of RhPd/CeO?-cubes and RhPd/CeO? -rods for ESR at low temperature is mainly ascribed to higher water-gas shift activity and a strong interaction between the bimetallic -more »oxide support interaction. STEM analysis shows the existence of RhPd alloyed nanoparticles in all samples, with no apparent relationship between ESR performance and RhPd particle size. X-ray diffraction under operating conditions shows metal reorganization on {100} and {110} ceria crystallographic planes during catalyst activation and ESR, but not on {111} ceria crystallographic planes. The RhPd reconstructing and tuned activation over ceria nanocubes and nanorods is considered the main reason for better catalytic activity with respect to conventional catalysts based on polycrystalline ceria« less

  10. Centre for the Study of African Economies Department of Economics . University of Oxford . Manor Road Building . Oxford OX1 3UQ

    E-Print Network [OSTI]

    Oxford, University of

    a poverty trap (Marx et al., 2013). Living in a slum is not only an outcome of poverty, a growing body

  11. Effects of Al2O3 support modifications on MoOx and VOx catalysts for dimethyl ether oxidation to formaldehyde

    E-Print Network [OSTI]

    Iglesia, Enrique

    to formaldehyde Haichao Liu, Patricia Cheung and Enrique Iglesia* Department of Chemical Engineering, University from support modifications in oxidation catalysts. 1. Introduction Formaldehyde (HCHO) is produced via

  12. ORIGINAL PAPER Novel solgel preparation of (P2O5)0.4(CaO)0.25(Na2O)X

    E-Print Network [OSTI]

    Jones, Peter JS

    tissue engineering to improve tissue regeneration has fuelled the need for novel biomaterials having the implant; F. Foroutan · G. Palmer · G. J. Owens · J. C. Knowles (&) Division of Biomaterials and Tissue Engineering/Eastman Dental Institute, University College London, 256 Gray's Inn Road, London WC1X 8LD, UK e

  13. Abstract--We have successfully manufactured and tested prototypes of a mechanically stabilized Bi2Sr2Ca1Cu2Ox

    E-Print Network [OSTI]

    McIntyre, Peter

    testing of the first batch of cable that used an earlier generation of Bi-2212 wire and stainless steel of the test coil the partial melt, and finally annealing it. Furthermore, oxygen is released and reabsorbed

  14. Centre for the Study of African Economies Department of Economics . University of Oxford . Manor Road Building . Oxford OX1 3UQ

    E-Print Network [OSTI]

    Oxford, University of

    of this research was conducted during my stay at the National Team for the Acceleration of Poverty Reduction (TNP2K Working Paper WPS/2014-29 #12;1 Introduction Why do the poor stay poor? One explanation for poverty traps is the prevalence of con- spicuous consumption among the poor which hinders investments and savings (Neeman and Moav

  15. Centre for the Study of African Economies Department of Economics . University of Oxford . Manor Road Building . Oxford OX1 3UQ

    E-Print Network [OSTI]

    Oxford, University of

    accelerations on poverty and inequality in Indonesia using a new panel dataset covering 26 provinces over of the economy. We find that growth in non-mining significantly reduces poverty and inequality. In contrast, overall growth and growth in mining appears to have no effect on poverty and inequality. We also identify

  16. Centre for the Study of African Economies Department of Economics . University of Oxford . Manor Road Building . Oxford OX1 3UQ

    E-Print Network [OSTI]

    Oxford, University of

    Dercon1 Abstract With serious impacts of climate change looming in a few decades, but current poverty still high in the developing world, we ask how to spend development aid earmarked for the poor. Poverty deliver large scale poverty reduction? Can aid be used for effective poverty reduction now without

  17. Fractional distillation of natural gasoline by means of a modified Podbielniak apparatus 

    E-Print Network [OSTI]

    Toombs, Alfred John Lawrence

    1939-01-01

    in4ebte4 to the Humble Oil an4 Hefiaing Company for supplying hia with the samples of stabiline4 natural gasolines whish were analgas4 Isbre410t iea ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ 1 I. Deeeriytiaa ot Apyazebue . II. Proeedere . 1T... pxeotionation of a 84. 2 Roid Vapor Pxoeeuro Watuxal Gasoline, Coiuan Uheoaled ~ . ~ . ~ ~ . ~ . . ~ ~ . 50 VII. Data Obtained in tho prost%enation of a 84. 1 Eei4 Vapor Pressure Natural Gasoline, Caiman Cooled . . . . . . . . . 51 VXII Data Obtained...

  18. 215High performance gas sensing materials based on nanostructed metal oxide films Corresponding author: G. Kiriakidis, e-mail: kiriakid@iesl.forth.gr

    E-Print Network [OSTI]

    . Nanostructured InOx and ZnOx films and their sensing properties are presented with respect of their surface for O3 and bellow 80 ppb for NO2 . 1. INTRODUCTION Metal oxides such as InOx and ZnOx are very inter

  19. Cdric Fournet , George Danezis Markulf Kohlweiss, Zhengqin Luo

    E-Print Network [OSTI]

    Bernstein, Phil

    ;DemoPreview > ZQL.compile let setup (x, y) = let ox = sample() let oy = sample() let Cx = g^x * h^ox let Cy = g^y * h^oy let sigv = sign sk (concat (eltBytes Cx) (eltBytes Cy)) ((x, ox, Cx), (y, oy, Cy), sigv)) let prover ((x, ox, Cx), (y, oy, Cy), sigv)) = let r = 2*x ­ y let o = 2*ox - oy (Cx

  20. An economic evaluation of selected tenure arrangements for a representative farm in the northern high plains of Texas 

    E-Print Network [OSTI]

    Harwell, R. Lynn

    1970-01-01

    'frixfxttee) ~ ~~yg/J Jeff:axxy 1970 ABSTRACT An Economic Evaluation of Selected Tenure Arrangements For A Representative Farm in the Northern Sigh Plains of Texas. (January 1970) Richard Lynn Sarwell; B. B. S. , The University of Texas Directed by: Dr. J. S... thar three-fourths of the annual noisture falls during the growing season [27]. LLANO M E'yg ~VI P@ I CO HARFvvv EHERSAV tiooRF HolCHINsoN Study Area vs% Figure 1. Distribution of Hardlands Soils, Texas bligh Pla111S Souro: [57 J !!ind !mi...

  1. Federal regulation of false advertising and other deceptive practices directed at the consumer 

    E-Print Network [OSTI]

    Miner, George Edward

    1962-01-01

    'ininR to 2 osd aad 4ruR adulteratioa were en&a'ted in Cesaany in LR79 and ia prance ia LBB4. Ry 1921 siailar statutes ha4 been passe4 ia Austria, Switaerlan4, Sweden, Deenark, Italy, Russia, Japan, and the United States. Royal ordinances vere issued La..., in the opinion of sons leading physicians, a contributing factor to the proliferation of patent nedicines. The dispersed population that resulted in this westward usvenent sado the availability of conpe- tent nedical care difficult, if sot inpesdible...

  2. Tax Credits, Rebates & Savings | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDuke EnergyRenewable EnergyRiversideEnergy Trust ofStatePSEGFHA PowerSaverExistingSDG&ENational Grid (Electric)-

  3. Tax Credits, Rebates & Savings | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDuke EnergyRenewable EnergyRiversideEnergy Trust ofStatePSEGFHA PowerSaverExistingSDG&ENational Grid

  4. Tax Credits, Rebates & Savings | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDuke EnergyRenewable EnergyRiversideEnergy Trust ofStatePSEGFHA PowerSaverExistingSDG&ENational GridSCE-

  5. Tax Credits, Rebates & Savings | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDuke EnergyRenewable EnergyRiversideEnergy Trust ofStatePSEGFHA PowerSaverExistingSDG&ENational GridSCE-Alliant

  6. Tax Credits, Rebates & Savings | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDuke EnergyRenewable EnergyRiversideEnergy Trust ofStatePSEGFHA PowerSaverExistingSDG&ENational

  7. Tax Credits, Rebates & Savings | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDuke EnergyRenewable EnergyRiversideEnergy Trust ofStatePSEGFHA PowerSaverExistingSDG&ENationalBusiness Incentive

  8. Tax Credits, Rebates & Savings | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDuke EnergyRenewable EnergyRiversideEnergy Trust ofStatePSEGFHA PowerSaverExistingSDG&ENationalBusiness

  9. Tax Credits, Rebates & Savings | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDuke EnergyRenewable EnergyRiversideEnergy Trust ofStatePSEGFHA PowerSaverExistingSDG&ENationalBusinessEnergy

  10. Tax Credits, Rebates & Savings | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDuke EnergyRenewable EnergyRiversideEnergy Trust ofStatePSEGFHA PowerSaverExistingSDG&ENationalBusinessEnergyXcel

  11. A New EM Algorithm for Maximum Likelihood Estimation in Two-level Structural Equation Models with Arbitrary Sample Designs

    E-Print Network [OSTI]

    Jiajuan Liang; Peter Bentler

    2011-01-01

    The model can be expressed as ( Vgi 9i v v w i t h the basicis given by 5 V = cov I \\Vgi I , J S I , w and the between-value v . g g YgO q+(N Vgi N g Under the basic assumptions B

  12. Rapport de mission-EGYPTE Octobre 2009

    E-Print Network [OSTI]

    Charette, André

    Rapport de mission- EGYPTE Octobre 2009 Direction des relations internationales #12;Rapport de mission- EGYPTE Page 2 DRI (YG ­ 09/11/2009) Résumé Au début octobre 2009, la vice-rectrice aux relations 750 000 dans les instituts #12;Rapport de mission- EGYPTE Page 3 techniques et technologiques et 1 940

  13. Embedded in internationally recognized research Master and semester projects at the Paul Scherrer Institute

    E-Print Network [OSTI]

    Daraio, Chiara

    fuels Nuclear power as integral part of a sustainable energy supply Fusion technology Non.sns-online.ch/de/index_yg.html) Teaching reactor CROCUS at EPFLTokamak of CRPP-EPFL Your challenges: Supply nuclear fuel for a growing / interested in power engineering, nuclear physics, thermal fluid dynamics, material sciences and energetic

  14. Development of Ultra-low Platinum Alloy C th d C t l t f PEM F l C ll

    E-Print Network [OSTI]

    Development of Ultra-low Platinum Alloy C th d C t l t f PEM F l C ll Cathode Catalyst for PEM Objectives · Ultra-low loading Pt catalyysts for oxygen reduction reaction with higgh activityyand ggoodg yg Definition ­ In Developing Low Loading Platinum Catalysts · C l PCatalyst Perfformance ¾ Platinum

  15. ARTICLE IN PRESS UNCORRECTEDPROOF

    E-Print Network [OSTI]

    Politècnica de Catalunya, Universitat

    Stochastic optimization for a tip-tilt adaptive correcting system M.S. Zakynthinaki a, , Y.G. Saridakis b July 2002 Abstract We present computer simulations of a tip-tilt adaptive optics system, where. The system uses a simple measure of the light intensity that passes through a mask and is recorded

  16. Developmental Science 12:2 (2009), pp 264271 DOI: 10.1111/j.1467-7687.2008.00758.x 2008 The Authors. Journal compilation 2008 Blackwell Publishing Ltd, 9600 Garsington Road, Oxford OX4 2DQ, UK and

    E-Print Network [OSTI]

    Carpenter, M.alinda

    2009-01-01

    on the kitchen counter, I could mean almost anything. In terms of referent, I could be indicating the backpack still might mean almost anything from `it's time to do your home- work' to `try searching there for your intention or meaning; see Tomasello, Carpenter & Liszkowski, 2007, for more on these terms). Recent

  17. 7th International Conference on Fluvial Sedimentology, Lincoln, USA 2001 Semi-arid paleoflood and modern flood facies in central Australia

    E-Print Network [OSTI]

    Bourke, Mary C.

    7th International Conference on Fluvial Sedimentology, Lincoln, USA 2001 Semi-arid paleoflood, University of Oxford, OX13TB Mary.bourke@geog.ox.ac.uk The stratigraphy of desert fluvial systems is poorly

  18. C.F. Maggi, S. Saarelma, F.J. Casson, C. Challis, E. de la Luna, L. Frassinetti, C. Giroud, E. Joffrin, J. Simpson, M. Beurskens, I. Chapman, J. Hobirk,

    E-Print Network [OSTI]

    Centre, Abingdon OX14 3DB, UK 2 Asociacion CIEMAT, Madrid, Spain 3 Association VR, Fusion Plasma Physics14 3DB, UK 1 CCFE, Culham Science Centre, Abingdon OX14 3DB, UK 2 Asociacion CIEMAT, Madrid, Spain 3

  19. arXiv:astroph/0502379 DRAFT VERSION FEBRUARY 21, 2005

    E-Print Network [OSTI]

    Ness, Jan-Uwe

    LEONIS A. MAGGIO 1 , J.­U. NESS 2 Draft version February 21, 2005 ABSTRACT Direct comparison of high Physics, University of Oxford, 1 Keble Road, Oxford OX13NP; ness@thphys.ox.ac.uk like stellar flares

  20. RESEARCHARTICLE Copyright 2005 American Scientific Publishers

    E-Print Network [OSTI]

    - ated: a Rayleigh and a shear horizontal. A layer of InOx was deposited to provide a conductometric for higher concentrations. Keywords: SAW Gas Sensor, Layered, Conductometric, ZnO, InOx , NO2. 1

  1. PHYSICAL REVIEW B 85, 195141 (2012) Two-component Coulomb glass in insulators with a local attraction

    E-Print Network [OSTI]

    Müller, Markus

    2012-01-01

    incorporates survival of the localized pairs. A prominent material exhibiting the above phenomenology is InOx structure, it is widely believed that the carriers in InOx originate from oxygen vacancies, likely partially

  2. PHYSICS BEFORE AND AFTER EINSTEIN This page intentionally left blank

    E-Print Network [OSTI]

    Mamone Capria, Marco

    /Lavis Marketing 73 Lime Walk Headington Oxford OX3 7AD England fax: +44 1865 750079 Distributor in the USA

  3. In this thesis, our goal was to fabricate Josephson junction that can be stably processed at 300C or higher. With the purpose of integrating Josephson junction fabrication with current semiconductor circuit fabrication

    E-Print Network [OSTI]

    /Hf-HfOx/Nb superconductor tunnel Josephson junctions that can be grown or processed at elevated temperatures. Also elevated

  4. In Situ Transmission Electron Microscopy and Ion Irradiation of Ferritic Materials

    E-Print Network [OSTI]

    Motta, Arthur T.

    Department of Materials, University of Oxford, Oxford OX1 3PH, United Kingdom 3 Division of Materials, CIEMAT

  5. PREPARED FOR THE U.S. DEPARTMENT OF ENERGY, UNDER CONTRACT DE-AC02-76CH03073

    E-Print Network [OSTI]

    -001, Lisboa, Portugal 9 Association EURATOM-CIEMAT para Fusion, CIEMAT, Spain and EFDA CSU JET, Abingdon, OX14

  6. S.N. Gerasimov, P. Abreu, M. Baruzzo, V. Drozdov, A. Dvornova, J. Havlicek, T.C. Hender, O. Hronova, U. Kruezi, X. Li, T. Markovic, R. Pnek,

    E-Print Network [OSTI]

    , Culham Science Centre, Abingdon OX14 3DB, UK 2 Asociacion CIEMAT, Madrid, Spain 3 Association VR, Fusion

  7. # 2007 The Authors Journal compilation # 2007 Blackwell Publishing Ltd

    E-Print Network [OSTI]

    , Oxford OX3 0BP, UK 3 Istituto di Biologia e Biotecnologia Agraria-Consiglio Nazionale delle Ricerche, via

  8. From single-molecule magnetism to long-range ferromagnetism in Hpyr[Fe17O16(OH)12(py)12Br4]Br4

    E-Print Network [OSTI]

    Ryan, Dominic

    , Chalk River Laboratories, Chalk River, Canada K0J 1J0 5ISIS, Rutherford Appleton Laboratory, Didcot OX11

  9. Phase Fluctuations in a Strongly Disordered s-Wave NbN Superconductor Close to the Metal-Insulator Transition

    E-Print Network [OSTI]

    Raychaudhuri, Pratap

    insulating Bi films [4], finite high-frequency superfluid stiffness above Tc in amorphous InOx films [5

  10. T h e o p e n a c c e s s j o u r n a l f o r p h y s i c s New Journal of Physics

    E-Print Network [OSTI]

    Leonardo, Degiorgi

    and superconductivity [1, 2]. Thin highly disordered InOx films were first studied with dc transport and ac conductivity

  11. EPL, 102 (2013) 67008 www.epljournal.org doi: 10.1209/0295-5075/102/67008

    E-Print Network [OSTI]

    Müller, Markus

    2013-01-01

    in strongly disordered, superconducting InOx films [15,16] have shown that a magnetic field not only destroys

  12. Modelling InSb Czochralski Growth Tark Bouhennache1

    E-Print Network [OSTI]

    Stockie, John

    to ensure the reduction of any InOx compounds that may be produced. This addition of hydrogen necessitates

  13. Lightweight Location Verification in Air Traffic Surveillance Networks

    E-Print Network [OSTI]

    Lenders, Vincent

    of Oxford, UK martin.strohmeier@ cs.ox.ac.uk Vincent Lenders armasuisse, Switzerland vincent.lenders

  14. Preventing Lunchtime Attacks: Fighting Insider Threats With Eye Movement Biometrics

    E-Print Network [OSTI]

    Lenders, Vincent

    .rasmussen@cs.ox.ac.uk Vincent Lenders Armasuisse, Switzerland vincent.lenders@armasuisse.ch Ivan Martinovic University of Oxford

  15. Catalytic Properties of Supported MoO3 Catalysts for Oxidative Dehydrogenation of Propane

    E-Print Network [OSTI]

    Iglesia, Enrique

    Catalytic Properties of Supported MoO3 Catalysts for Oxidative Dehydrogenation of Propane Kaidong The effects of MoOx structure on propane oxidative dehydrogenation (ODH) rates and selectivity were examined with those obtained on MoOx/ZrO2. On MoOx/Al2O3 catalysts, propane turnover rate increased with increasing Mo

  16. Materials Science and Engineering Thesis Defense

    E-Print Network [OSTI]

    in organic solar cells with or without TiOx interlayer. The current-voltage characteristics were also tested 317 Enhanced Performance in Quantum Dot Solar Cell with TiOx and N2 Doped TiOx Interlayers Jialin Yu Advisor: G.E. Jabbour, T.L. Alford Abstract As the 3rd generation solar cell, quantum dot solar cells

  17. Catalysis Winter School 2012 Oxford University / Imperial College London / University College London

    E-Print Network [OSTI]

    Wallace, Mark

    . Simon Jones (Ox): Modified Palladium Nanoparticles for Hydrogen production from Formic acid 8. Thomas-borane (H3B.NMe2H) dehydrocoupling 2. Ed Emmett (Ox): Sulfonyl group incorporation using palladium catalysis and DABSO 3. Adam Healy (Ox): New insights into bio-catalytic hydrogen oxidation using electrochemistry

  18. Duality and Flat Base Change on Formal Schemes

    E-Print Network [OSTI]

    H0(X, OX /InOX ) is the J-adic completion of the noetherian B-algebra A0 := H0(X, OX ), and that the J-adic and I-adic topologies on A are the same; and then X is ...

  19. Sensors and Actuators B 118 (2006) 135141 Low temperature indium oxide gas sensors

    E-Print Network [OSTI]

    2006-01-01

    Available online 30 May 2006 Abstract InOx thin films were grown by dc magnetron sputtering. Structural size variation that determines the sensitivity of InOx films against ozone. © 2006 Elsevier B.V. All rights reserved. Keywords: Metal oxide thin films; InOx; Gas sensors; Ozone 1. Introduction The interest

  20. Electric field gating with ionic liquids Rajiv Misra, Mitchell McCarthy, and Arthur F. Hebarda

    E-Print Network [OSTI]

    Hebard, Arthur F.

    of 104 for thin conducting InOx films. The areal capacitances and field effect mobilities noticeably dielectrics and show that a significant field-gate effect on thin films of amor- phous composite InOx can material is a non- porous continuous thin metal film such as low carrier density InOx,10 then excess charge

  1. LinearTime ``branching

    E-Print Network [OSTI]

    Schmidt, David A.

    #28; head = f(c0; c0)g #28; tail = f(c0; c2); (c1; c1); (c1; c2)g I #6; (c0) = fitg I #6; (c1) = fg I #6; (c2) = fx; yg . c0 c1 c2 tail head y it tail tail x Rather than states, the nodes now represent on sets.) But here we have a relation, #28; C --- not a function --- to approximate. Dams noted that, #28

  2. Computer Science 236 Fall Sept. 23, 2010 Evening Section University of Toronto

    E-Print Network [OSTI]

    Penn, Gerald

    )@ A SOLN: Let B " ¡ ) be "C #"$D%E'0)1"$D%324)F5 HGIQP SR GTUPDV R GTUPDW R X . WTS B " ¡ ) §Y§©g£ 2 . WTS that B "$!) holds for all such that £ @ . BASE CASE: The base case is when 5 @ . Then ¡ 5 g 5E2 , and so: e "s2 § 24)6525 x 2%32 h 2 2 h ' y A 1 #12;INDUCTIVE HYPOTHESIS: Assume B "$D) . WTS

  3. Ris Energy Report 6 Energy efficiency policy 1 4 Energy efficiency policy

    E-Print Network [OSTI]

    Risø Energy Report 6 Energy efficiency policy 1 4 Energy efficiency policy JENs-PETER LYNOV, RIsø DTU; sVEND sVENDsEN, HENRIk M. TOMMERUP, bYg DTU; JøRN bORUP JENsEN, DANIsH ENERgY AssOCIATION 4.1 Introduction Figure 6 shows how energy efficiency improvements have reduced EU energy intensity during the past

  4. IEEE TRANSACTIONS ON PATTERN ANALYSIS AND MACHINE INTELLIGENCE, VOL. 25, NO. 8, AUGUST 2003 1027 [20] R.L. Kirby, "A Product Rule Relaxation Method," Technical Report 772,

    E-Print Network [OSTI]

    Peli, Eli

    , pp. 617-623, 1985. [28] A. Rosenfeld, R.A. Hummel, and S.W. Zucker, "Scene Labeling by Relaxation. 103-111, 1996. [44] S.W. Zucker, E.V. Krishnamurthy, and R.L. Haar, "Relaxation Processes for Scene. 41-48, 1978. [45] S.W. Zucker, Y.G. Leclerc, and J.L. Mohammed, "Continuous Relaxation and Local

  5. xsxsxsxsxsxsxsxsxsxsxsxsxsxsxsxsxsx Michigan State University ExtensionBulletin E-657Major RevisionNov. 1993

    E-Print Network [OSTI]

    xsxsxsxsxsxsxsxsxsxsxsxsxsxsxsxsxsx x Mx Ix Cx Hx Ix Gx Ax Nx x Vx Ex Nx Ix Sx Ox Nx Michigan StateBUTCHERxPREPARE/COOK/PRESERVE #12;xsxsxsxsxsxsxsxsxsxsxsxsxsxsxsxsxsx x Mx Ix Cx Hx Ix Gx Ax N x Vx Ex Nx Ix Sx Ox Nxx Mx Ix Cx Hx bulletin "You and Your Wild Game." #12;x Mx Ix Cx Hx Ix Gx Ax N x Vx Ex Nx Ix Sx Ox Nxx Mx Ix Cx Hx Ix Gx

  6. Competition between Superconductivity

    E-Print Network [OSTI]

    Fominov, Yakov

    #12;InOx films d = 20-25 nm V.F. Gantmakher et al., JETP 82, 951 (1996). #12;E. Bielejec, J. Ruan-driven superconductor-insulator transition has included many materials, e.g., Bi, MoSi, Ta, InOx, Be, TiN. The immediate transition into an insulator, was found so far only in InOx , Be, and TiN films. For Bi, MoSi, and Ta

  7. Texas A&M University Edward S. Bielejec

    E-Print Network [OSTI]

    Fominov, Yakov

    ? Material Rc (k) Bi on Ge 6.4 Pb on Ge 9.9 MoC 3.2 Pb 15 InOx 7.0 Ga on Si 6 Bi on Si 6 Pb on Si 6 Bi on Sb in: InOx films by Shahar et al. InOx films by Gantmakher et al. TiN films by Baturina et al. S S R

  8. ENERGY UTILIZATION AND ENVIRONMENTAL CONTROL TECHNOLOGIES IN THE COAL-ELECTRIC CYCLE

    E-Print Network [OSTI]

    Ferrell, G.C.

    2010-01-01

    1969. "Scrubber Survey: a Lime/Limestone Trend," ElectricalMills/Kwh Process Limestone Lime Magnesia Cat-Ox Sodium Tonsto Unsaturated Operation of Lime and Limestone Scrubbers,"

  9. ACTINIDES-1981. ABSTRACTS

    E-Print Network [OSTI]

    Authors, Various

    2010-01-01

    E. Jackson and M. H. Rand, Rpt. AERE-R-3636 (1963). A. Cox,Pologne) Chemistry Division AERE HARWELL Oldest (Oxon) OX

  10. OXCARREO x f o r d C e n t r e f o r t h e A n a l y s i s o f R e s o u r c e R i c h E c o n o m i e s

    E-Print Network [OSTI]

    Oxford, University of

    Vermeulen 15.45-16.00 Tea 16.00-16.45 "Crime and Fracking" Alex James (OxCarre) Discussant: Roberto Bonfatti

  11. 2014 Annual Merit Review, Vehicle Technologies Office - Cross...

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

    State University. Synthesis and Characterization of Polymer-Coated Layered SiOx-Graphene Nanocomposite Anodes (Energy Storage) 3-73 Doug DeVoto; National Renewable Energy...

  12. ALS IR News October 25, 2006

    E-Print Network [OSTI]

    ). And the reflection spectrum of an Al mirror clearly shows the strong AlOx absorptions from the very thin oxide layer

  13. Recent assembly of the Cerrado, a neotropical plant diversity hotspot, by in situ evolution of adaptations

    E-Print Network [OSTI]

    Saleska, Scott

    Parks Rd, Oxford, OX1 3RB, United Kingdom; bEmbrapa Recursos Gene´ticos e Biotecnologia, PqEB, Caixa

  14. JOURNAL DE PHYSIQUE IV Colloque C9, supplCment au Journal de Physique 111, Volume 3, dCcembre 1993

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    containing Si3N4particles, Lin et al. [4] ox- idized A1203-Sicwhisker composites, Korinko et al. [5] oxidized

  15. Temperature dependence of resistivity and Hall coefficient in strongly disordered NbN thin films Madhavi Chand,1 Archana Mishra,1,2 Y. M. Xiong,3 Anand Kamlapure,1 S. P. Chockalingam,1 John Jesudasan,1

    E-Print Network [OSTI]

    Adams, Philip W.

    in disordered InOx and TiN films2,3 close to the superconductor-insulator transition, unusual temperature

  16. PseudoGap Superconductivity near Localization Threshold

    E-Print Network [OSTI]

    Fominov, Yakov

    ) · Low carrier density ( around 1021 cm-3 at low temp.) Examples: InOx NbNx thick films or bulk (+ B

  17. Eur. Phys. J. B 81, 237244 (2011) DOI: 10.1140/epjb/e2011-20160-8

    E-Print Network [OSTI]

    Shepelyansky, Dima

    2011-01-01

    (SIT) in presence of disorder were started with InOx alloys [13­16] and later continued with other ma

  18. Alexander H. Stephens: reluctant secessionist and confederate leader 

    E-Print Network [OSTI]

    Owens, James Leggette

    1966-01-01

    Clvll 6 ar . As tria i'*listed 8 8 ~ or' or t. 12 Geor g- 8 P at ol"- I'8 cri 0 =. ':nned Scut'I 8 eactz Gn tc Tnie C0Iil i o. Ii~2 of i"'Gi 2nd 8 i 0 enT'-0:81- der*t=s rio:, dree iri looC, Stepdiers?ss 8 1 ri if 2-rt fiSine A?en=ca. i '. Ii...~tony dur-r. g tre decade I2fo e O'Tc Hsr Bet;2&r Iis " ' 2 de" or T-I2 Iioc enate f'ac sion ir. Georgia, Tep 8 i- oi 'IIT t . 2 dl-unlcna t 'iover2i i ln T' 0 S stT i. ia ti 2 2 tlon 0 A. ' ' La. . c irl PioQ ~ a, nic vsc elcctc 1 0 t. l ~ oiltgo...

  19. GlobAerosol project website: http://www.globaerosol.info -A twelve-year (1995-2007) aerosol dataset from ATSR-2, AATSR, SEVIRI and MERIS ORAC project website: http://www.atm.ox.ac.uk/project/ORAC/ -More information about the ORAC retrieval scheme

    E-Print Network [OSTI]

    Oxford, University of

    BRDF model parameters (over land) and ESA-DUE GlobColour data and ECMWF 10 m winds (over ocean dust (separate spherical, from OPAC, and non- spherical models) · Maritime clean (from OPAC) · Urban) are used as model inputs for the surface albedo. For each retrieval superpixel, the AATSR cloud flag

  20. Optimization of out-of-plane magnetized Co/Pt multilayers with resistive buffer layers

    E-Print Network [OSTI]

    Emori, Satoru

    Ta oxide (TaOx) is investigated as a resistive buffer layer for the growth of high-quality Co/Pt multilayers with perpendicular magnetic anisotropy (PMA). The Pt/(Co/Pt)3 films grown on TaOx buffer layers exhibit stronger ...

  1. Partial Training for a Lexicalized-Grammar Parser Stephen Clark

    E-Print Network [OSTI]

    Curran, James R.

    Laboratory Wolfson Building, Parks Road Oxford, OX1 3QD, UK stephen.clark@comlab.ox.ac.uk James R. Curran, resulting in high precision, yet incomplete and noisy data. The dependency parsing model of Clark and Curran, such as TAG (Chiang, 2000), CCG (Clark and Curran, 2004b; Hockenmaier, 2003), HPSG (Miyao et al., 2004

  2. Partial Training for a LexicalizedGrammar Parser Stephen Clark

    E-Print Network [OSTI]

    Curran, James R.

    Laboratory Wolfson Building, Parks Road Oxford, OX1 3QD, UK stephen.clark@comlab.ox.ac.uk James R. Curran, resulting in high precision, yet incomplete and noisy data. The dependency parsing model of Clark and Curran, such as TAG (Chiang, 2000), CCG (Clark and Curran, 2004b; Hockenmaier, 2003), HPSG (Miyao et al., 2004

  3. Transition metal oxide improves overall efficiency and maintains performance with inexpensive metals.

    E-Print Network [OSTI]

    that inserting a transition metal oxide (TMO) between the lead sulfide (PbS) quantum dot (QD) layer and the metalTransition metal oxide improves overall efficiency and maintains performance with inexpensive of performance. n-type TMOs consisting of molybdenum oxide (MoOx) and vanadium oxide (V2Ox) were used

  4. UK Energy Research Centre Demand Reduction Theme, University of Oxford

    E-Print Network [OSTI]

    for the Environment South Parks Road Oxford OX1 3QY www.eci.ox.ac.uk www.ukerc.ac.uk #12;UK Energy Research Centre 2 1 than carbon taxes or upstream measures would, but there is little evidence to substantiate

  5. British Geomorphological Research Group, Annual Meeting, Oxford, 2003. An analysis and classification of 'barchan' dunes on Mars.

    E-Print Network [OSTI]

    Bourke, Mary C.

    and classification of 'barchan' dunes on Mars. Bourke, M.C., and Balme, M. School of Geography and the Environment, University of Oxford, Oxford, OX1 3TB, UK. Mary.bourke@geog.ox.ac.uk Martian sand dunes have the potential and morphodynamics. Recognition of the characteristics of both recent and ancient dunes is the first step towards

  6. Non-convex flux functions and compound shock waves in sediment beds

    E-Print Network [OSTI]

    De Sterck, Hans

    Non-convex flux functions and compound shock waves in sediment beds Gert Bartholomeeusen1 , Hans De of Engineering Science, Parks Road, Oxford OX1 3PJ, UK gilliane.sills@eng.ox.ac.uk Summary. Sediment layers in sediment beds and the numerical modelling of the sedimentation process using an experimentally obtained

  7. Learning Object Categories from Google's Image Search L. Fei-Fei2

    E-Print Network [OSTI]

    Perona, Pietro

    Learning Object Categories from Google's Image Search R. Fergus1 L. Fei-Fei2 P. Perona2 A Institute of Technology Parks Road, Oxford MC 136­93, Pasadena OX1 3PJ, U.K. CA 91125, U.S.A. {fergus,az}@robots.ox.ac.uk {feifeili,perona}@vision.caltech.edu Abstract Current approaches to object category recognition require

  8. Report no. 00/04 An introduction to the adjoint approach to design

    E-Print Network [OSTI]

    Pierce, Niles A.

    Computing Laboratory Numerical Analysis Group Wolfson Building Parks Road Oxford, England OX1 3QD March University Computing Laboratory, Oxford, OX1 3QD, UK. Niles A. Pierce California Institute of Technology are an active area of research in computational uid dynamics, particularly for aeronautical applications

  9. arXiv:astro-ph/0502379v118Feb2005 DRAFT VERSION FEBRUARY 21, 2005

    E-Print Network [OSTI]

    Ness, Jan-Uwe

    . MAGGIO 1 , J.-U. NESS 2 Draft version February 21, 2005 ABSTRACT Direct comparison of high-resolution X Physics, University of Oxford, 1 Keble Road, Oxford OX1 3NP; ness@thphys.ox.ac.uk like stellar flares

  10. University of Oxford Energy Toolkit2011/12

    E-Print Network [OSTI]

    Melham, Tom

    's Carbon Management Strategy go to: www.admin.ox.ac.uk/estates/environment/energy/ carbonmanagementstrategyUniversity of Oxford Energy Toolkit2011/12 www.admin.ox.ac.uk/estates/environment/energy emissions through our carbon management strategy. It is now even more important that the University acts

  11. University of Oxford WELLCOME UNIT FOR THE HISTORY OF MEDICINE

    E-Print Network [OSTI]

    Wallace, Mark

    University of Oxford WELLCOME UNIT FOR THE HISTORY OF MEDICINE 45-47 BANBURY ROAD, OXFORD, OX2 6PE Banbury Road on Mondays at 2.15pm Coffee will be available from 2.00pm `Medicine, Leisure and the Arts' 1 Smith elise.smith@wuhmo.ox.ac.uk Wellcome Unit for the History of Medicine Details of all Wellcome Unit

  12. Bull Math Biol (2013) 75:12331237 DOI 10.1007/s11538-013-9873-y

    E-Print Network [OSTI]

    Maini, Philip K.

    2013-01-01

    the function of the tissue and contribute to, or mitigate, the disease. Mathematical modeling and simulation', Oxford OX1 3LB, UK e-mail: maini@maths.ox.ac.uk G. Niebur Tissue Mechanics Laboratory, Department and finite difference computational techniques implemented on powerful computer clusters, and the biological

  13. PHYSICAL REVIEW B 91, 054514 (2015) Slowing down of vortex motion at the Berezinskii-Kosterlitz-Thouless

    E-Print Network [OSTI]

    Raychaudhuri, Pratap

    2015-01-01

    of conventional superconductors as MoGe [7,8], InOx [9­11], and NbN [12­14] they are less evident in other cases long ranged. However, this also implies that in the case of conventional superconductors, like InOx

  14. SUPERCONDUCTING TRANSITION IN "BAD" METALS Field-induced ...

    E-Print Network [OSTI]

    Fominov, Yakov

    . (1998, 2000) InOx EXPERIMENTAL SUMMARY Materials Common features 1. Fan-shaped structure of R(T) curves.10 0.15 InOX TiN 1/Rmax (k -1 ) T ( K ) Lines y lnx follow from theory by Galitski and Larkin #12

  15. proteinsSTRUCTURE O FUNCTION O BIOINFORMATICS Solid-state NMR and simulation studies of

    E-Print Network [OSTI]

    Watts, Anthony

    , University of Oxford, Oxford OX1 3QU, United Kingdom 2 School of Applied Sciences, College of Science of Biochemistry, University of Oxford, Oxford OX1 3QU, United Kingdom. E-mail: anthony Frances Separovic,4 and Anthony Watts1 * 1 Biomembrane Structure Unit, Department of Biochemistry

  16. The effects of two situational variables on the self-confidence of males and females in achievement settings 

    E-Print Network [OSTI]

    Smith, Susan Marilyn Hartman

    1977-01-01

    - ~uivocal feedback on individuals' abilities, women do not have lower self-confidence than men. Feather and. Simon (1971) found no sex differences in conf1dence of passing a subsequent anagruns test when the subjects had been given feedback in the form oi..., 94 ) I ? 5. 28, yg . 01. A Scheffe's comparison of means revealed that subjects who were given clear feedback were significantly more conf1dent in same-sex competition (X= 4. 26) and less confident in oppos1te-sex competition (X= 2. 71), g g . 05...

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

    E-Print Network [OSTI]

    Bondari, Katrina

    2011-05-19

    ssssc?s?wct??c? HE POWRFWSAC:FLIW,D::N:IWAC:WSNDEYEGRLWLARGGWLRALWP5EU:WAC:WNRAOIWRALWDBRFLW PDARLARNPGGOWGRAWPAWFRoCAWAEWpBGGOW RLYGPOWRALWyOLA:DOWPF WyPoFRpRN:FN:WriGPA:WTghWSFOEF:W tPG2RFoWACDEBoCWAC:WSNDEYEGRLWNEyYG:0W BDRFoWAC:W POWNPFWp...::GWAC:WLAD:FoACWPF W YEt:DWEpWAC:WPFNR:FAWLENR:AOWACPAWNEFLADBNA: WLBNCWoGEDREBLWyEFBy:FALhW1EE2RFo FEDACWpDEyWAC:WYD:NRYRN:WEpWAC:WSNDEYEGRLWEF:WCPLWPWUR:tWEpWAC:WPFNR:FAWKEyPFWpEDByW PF W,D::2Wpolip IWPLWt:GGWPLWAC:WAEBDRLAOWD:LAPBDPFALIWNPp:LIWPF WLEBU...

  18. Variability in desert bighorn and Rambouillet sheep using restriction fragment length polymorphisms 

    E-Print Network [OSTI]

    Lyles, Ingrid Doodeheefver

    1989-01-01

    , was resuspended in Tris-EDTA, and the concentration of DNA in yg/ml was determined (Skow et al. 1988). 18 Table 1. Species identification. No. 1 2 3 4 6 7 DBHS NV/TX DBHS NV/TX DBHS NV/TX DBHS NV/TX DBHS NV/TX DBHS NV/TX Heparinized Blood.... Rambo. Calif. Rambo. Calif. Rambo. DNA extracted form DNA extracted form DNA extracted form DNA extracted form DNA extracted form UCB UCB UCB UCB UCB DBHS NV/TX: Desert Bighorn Sheep Nevada/Texas cross DBHS AZ/AZ: Desert Bighorn Sheep...

  19. Investigation of the possibility of trans-Pacific non-stop flight operation in the winter season 

    E-Print Network [OSTI]

    Heckroth, Lewis Carl

    1958-01-01

    is nothing nore than a nso applisation of ssilisg- ship prinsiplas. The ship captains of old bsd au snpirioaL hnoslodgs of Cha gasaraL wind ckreulatiuu sn4, ovau though ebs' hnsu lieeia Of cha acnoepllo&o pressure sgscsnsy chlYg scudiod INK% Ln... baste research nsehod nssd in ehts problon. ~~pain~. ke ghcefcfdggrgCegt %e&wmget~ 5 U1 ~W~Ra~oct=~e~~~M gobraaey-4N~~~=-%ae4s-=- ?, ? "="; ? =j I for ebis ptlse aeccdp. This roprsssses sn ontnesrrnpesd l7-dsp portod sanesisd tn the sddd1s s8...

  20. Double active shielded magnetic field gradient design with minimum inductance method 

    E-Print Network [OSTI]

    Wang, Xu

    1992-01-01

    ratio, m; may have 2i + 1 values, i, i ? 1, . . . . . . , ? i. For the hydrogen nucleus, the spin is &i, and p is 42. 58 MHz/Tesla. The Hamiltonian for this system in the lab frame can be written as H = H, yg+ H;?u (1. 1. 2) where = p' H, fy ? + V... As has been discussed before, some MRI techniques require fast switching of the gradient. However, in many MRI instruments today, the main static magnetic fields (around the order of 1 Tesla) are provided by superconducting inagnets. They have...

  1. A Streaming Ensemble Algorithm (SEA) for Large-Scale Classification

    E-Print Network [OSTI]

    Street, Nick

    @(¥¨Q#B§e¤¥Fwr#)(¥¨H#BE¢0Y¤#BE¡te!(¥&QE0¨E¡Q5¤¥h£¦P¤010¨¥1£¦£fBDu#Ae$#7(¦q E01P¤i#7(§)#@(xF¥¨E¡¤5a0&#@§e$#@Ei5B¡rw #¥¨i¡¤5sC¤E0YG¥1©e$#@5F¥1£t¥&#Bh01PQ£cF§¥¨(£e¤i#B0¨¥u#B¡B(H!¥¨(&S¢ ¢%'¥1¡ E¡901#B£¦¥1£aCQ¥¨(¥hb¥0

  2. A comparison of three deer survey techniques 

    E-Print Network [OSTI]

    Rakestraw, Danny Lee

    1995-01-01

    from rolling hills to steep washes. Upland Vgtt llgdo t day)i yg't (~P glg d 1* ), A't t tl (A~lo ~1' 'd ), d forbs. Shoreline areas, which were occasionally flooded, Hew Mexi, co AMIS - Anu. stad Nat, Reer. Area CACA - Carlsbad Caverns Nat. Park... suitable for normal vehicular travel were Walnut Canyon Road, Scenic Loop Road, and along the flats in the southern portion of the park. Several species of large mammals occurred on the park including mountain lion (/elis concolor), elk (~Cerv s ~lh...

  3. Contaminant and genotoxicity profiles of sediments and zebra mussels as indicators of chemical contamination in Hamilton Harbour

    SciTech Connect (OSTI)

    McCarry, B.E.; Allan, L.M.; Marvin, C.H.; Villella, J.; Bryant, D.W. [McMaster Univ., Hamilton, Ontario (Canada)

    1995-12-31

    Samples of bottom sediments, suspended sediments and Zebra mussels were collected from Hamilton Harbour, an embayment of western Lake Ontario. In addition, sediment samples were collected from creeks which flow into the Harbour. These sediment samples were extracted with dichloromethane and the organic extract was cleaned up prior to analysis for PAH and thia-arenes by GC-MS. These extracts were also subjected to genotoxicity bioassays (Ames assays) in two strains of Salmonella typhimurium (a TA98-like strain, YG1024-S9 and a TA100-like strain, YG1025 + S9). The sediment and Zebra mussels samples collected near sites of heavy coal tar contamination showed PAH, thia-arene and genotoxicity profiles that are very similar to the corresponding profiles for coal tar. These observations are consistent with the resuspension and distribution of coal tar-contaminated bottom sediments in the water column. The sediment samples collected in a major creek entering the Harbor and the sediment and Zebra mussels samples collected in Windemere Arm near the mouth of this creek showed very different chemical and genotoxicity profiles. Thus, the chemical and genotoxicity burdens on Hamilton Harbour posed by the resuspension of coal tar-contaminated sediments and the inputs from urban activity into a major creek and the Harbor can be differentiated.

  4. GLYCOBIOLOGY INSTITUTE PHONE LIST (as 12.10.11) Name Room No Tel: Office/Lab Supervisor Email

    E-Print Network [OSTI]

    T D Katherine.patzel@ccc.ox.ac.uk Perez Dan (D Phil Oct 13) 30.25 75831 Zitzmann N daniel.perez.D de Leon Raffaele27 June ­ 19 Aug 30.25 758

  5. Abstract A recombinant strain of Escherichia coli (JM109/pBZ1260) expressing constitutively toluene-o-

    E-Print Network [OSTI]

    Wood, Thomas K.

    compound. P. stutzeri OX1 was isolated from activated sludge of a wastewater treatment plant (Baggi et alCarty 1997). Both are regulated under the Safe Drinking Water Act to a maximum contaminant level of 5 parts

  6. Volatilizable Biogenic Organic Compounds (VBOCs) with two dimensional Gas Chromatography-Time of Flight Mass Spectrometry (GC × GC-TOFMS): sampling methods, VBOC complexity, and chromatographic retention data

    E-Print Network [OSTI]

    2012-01-01

    4 isoprene toluene- d 8 OxMT FB BFB ST MT t 1 (s) ? primarycedrene camphor linalool BFB t 1 (s) ? primary retentiontoluene-d8, bromofluorobenzene (BFB), and 1,2-DCB-d4 (1,2-

  7. Segregation of In to dislocations in InGaN

    E-Print Network [OSTI]

    Horton, Matthew K.; Rhode, Sneha; Sahonta, Suman-Lata; Kappers, Menno J.; Haigh, Sarah J.; Pennycook, Timothy J.; Humphreys, Colin J.; Dusane, Rajiv O.; Moram, Michelle A.

    2015-01-16

    Daresbury Laboratories, Warrington, WA4 4AD, UK. 5) Department of Materials, University of Oxford, Parks Road, Oxford OX1 3PH, UK 6) Dept. Metallurgical Engineering and Materials Science, Indian Institute of Technology Bombay, Mumbai, 400076, India...

  8. Proc. Indian Acad. Sci. (Math. Sci.) Vol. 113, No. 3, August 2003, pp. 113. Printed in India

    E-Print Network [OSTI]

    Fluckiger, Eva Bayer

    Research, Homi Bhambha Road, Mumbai 400 005, India UMR 7539 du CNRS, D´epartement de Math of the natural map Hi et (Ox, Z/2) Hi(F(X)), or equivalently its image unde

  9. Impacts of Oxygenated Gasoline Use on California Light-Duty Vehicle Emissions

    E-Print Network [OSTI]

    Kirchstetter, Thomas W.; Singer, Brett C.; Harley, Robert A.

    1996-01-01

    Addition of oxTgenates gasoline will not reduce ozone to (3)I. Y. remote sensing 1994 gasoline samples ranged from 0.7weight reported for liquid gasoline with an RVP Assoc. 1990,

  10. Mixed N-Heterocyclic Carbene-Bis(oxazolinyl)borato Rhodium and Iridium Complexes in Photochemical and Thermal Oxidative Addition Reactions

    SciTech Connect (OSTI)

    Xu, Songchen; Manna, Kuntal; Ellern, Arkady; Sadow, Aaron D

    2014-12-08

    In order to facilitate oxidative addition chemistry of fac-coordinated rhodium(I) and iridium(I) compounds, carbene–bis(oxazolinyl)phenylborate proligands have been synthesized and reacted with organometallic precursors. Two proligands, PhB(OxMe2)2(ImtBuH) (H[1]; OxMe2 = 4,4-dimethyl-2-oxazoline; ImtBuH = 1-tert-butylimidazole) and PhB(OxMe2)2(ImMesH) (H[2]; ImMesH = 1-mesitylimidazole), are deprotonated with potassium benzyl to generate K[1] and K[2], and these potassium compounds serve as reagents for the synthesis of a series of rhodium and iridium complexes. Cyclooctadiene and dicarbonyl compounds {PhB(OxMe2)2ImtBu}Rh(?4-C8H12) (3), {PhB(OxMe2)2ImMes}Rh(?4-C8H12) (4), {PhB(OxMe2)2ImMes}Rh(CO)2 (5), {PhB(OxMe2)2ImMes}Ir(?4-C8H12) (6), and {PhB(OxMe2)2ImMes}Ir(CO)2 (7) are synthesized along with ToMM(?4-C8H12) (M = Rh (8); M = Ir (9); ToM = tris(4,4-dimethyl-2-oxazolinyl)phenylborate). The spectroscopic and structural properties and reactivity of this series of compounds show electronic and steric effects of substituents on the imidazole (tert-butyl vs mesityl), effects of replacing an oxazoline in ToM with a carbene donor, and the influence of the donor ligand (CO vs C8H12). The reactions of K[2] and [M(?-Cl)(?2-C8H14)2]2 (M = Rh, Ir) provide {?4-PhB(OxMe2)2ImMes?CH2}Rh(?-H)(?-Cl)Rh(?2-C8H14)2 (10) and {PhB(OxMe2)2ImMes}IrH(?3-C8H13) (11). In the former compound, a spontaneous oxidative addition of a mesityl ortho-methyl to give a mixed-valent dirhodium species is observed, while the iridium compound forms a monometallic allyl hydride. Photochemical reactions of dicarbonyl compounds 5 and 7 result in C–H bond oxidative addition providing the compounds {?4-PhB(OxMe2)2ImMes?CH2}RhH(CO) (12) and {PhB(OxMe2)2ImMes}IrH(Ph)CO (13). In 12, oxidative addition results in cyclometalation of the mesityl ortho-methyl similar to 10, whereas the iridium compound reacts with the benzene solvent to give a rare crystallographically characterized cis-[Ir](H)(Ph) complex. Alternatively, the rhodium carbonyl 5 or iridium isocyanide {PhB(OxMe2)2ImMes}Ir(CO)CNtBu (15) reacts with PhSiH3 in the dark to form the silyl compound {PhB(OxMe2)2ImMes}RhH(SiH2Ph)CO (14) or {PhB(OxMe2)2ImMes}IrH(SiH2Ph)CNtBu (17). These examples demonstrate the enhanced thermal reactivity of {PhB(OxMe2)2ImMes}-supported iridium and rhodium carbonyl compounds in comparison to tris(oxazolinyl)borate, tris(pyrazolyl)borate, and cyclopentadienyl-supported compounds.

  11. FINITE SEMIGROUPS IMPOSING TRACTABLE CONSTRAINTS

    E-Print Network [OSTI]

    Bulatov, Andrei

    and Mechanics, Ural State University, 620083 Ekaterinburg, RUSSIA E-mail: Andrei.Bulatov@usu.ru PETER JEAVONS.Jeavons@comlab.ox.ac.uk MIKHAIL VOLKOV Department of Mathematics and Mechanics, Ural State University, 620083 Ekaterinburg, RUSSIA

  12. Environmental Public Voluntary Programs Reconsidered Thomas P. Lyon and John W. Maxwell

    E-Print Network [OSTI]

    Lyon, Thomas P.

    of taxes, subsidies, and command and control regulations to remedy environmental prob- lems. Recently by Blackwell Publishing. Inc., 350 Main Street, Malden, MA 02148, USA, and 9600 Garsington Road, Oxford, OX4 2

  13. 2014 Annual Merit Review, Vehicle Technologies Office - 03 Energy...

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

    3.50 3.17 3.33 Synthesis and Characterization of Polymer- Coated Layered SiOx-Graphene Nanocomposite Anodes Donghai Wang (Pennsylvania State University) 2-116 3.67 3.17...

  14. Experimental modeling of intergranular exchange coupling for perpendicular thin film media

    E-Print Network [OSTI]

    Laughlin, David E.

    does exist in the CoCrPt-oxide layer of present perpendicular thin film media, especially for media to quantitatively determine the ferromagnetic ex- change coupling through an oxide layer as a function of ox- ide

  15. Probing warm dense lithium by inelastic X-ray scattering

    E-Print Network [OSTI]

    Loss, Daniel

    of warm dense matter states has practical applications for controlled thermonuclear fusion, where, Rutherford Appleton Laboratory, Chilton, Didcot, OX11 0QX, UK 4 Centre for Fusion, Space and Astrophysics

  16. Interfaces in Driven Ising Models: Shear Enhances Confinement Thomas H. R. Smith,1

    E-Print Network [OSTI]

    Schmidt, Matthias

    , University of Oxford, 1 Keble Road, Oxford OX1 3NP, United Kingdom 4 Institute of Physical Chemistry, Polish in condensed matter physics [6­8]. Underlying is the idea of coarse graining in time [9], where a record

  17. Oxford Colleges On-line Reports for Tutorials

    E-Print Network [OSTI]

    Wallace, Mark

    OxCORT Oxford Colleges On-line Reports for Tutorials Tutorial Office Role Version 4.4 BSP Training Overview of Tutorial reports.................................................................11 Overview of Revision Class reports.....................................................12 Overview of payments

  18. Oxford Colleges On-line Reports for Tutorials

    E-Print Network [OSTI]

    Wallace, Mark

    OxCORT Oxford Colleges On-line Reports for Tutorials Organising or Personal Tutor Role Version 4 of Tutorial reports...................................................................8 Overview of Revision Class reports.......................................................8 Overview of payments

  19. Oxford Colleges On-line Reports for Tutorials

    E-Print Network [OSTI]

    Wallace, Mark

    OxCORT Oxford Colleges On-line Reports for Tutorials Senior Tutor Role Version 4.4 BSP Training of Tutorial reports...................................................................8 Overview of Revision Class reports.......................................................8 Overview of payments

  20. Oxford Colleges On-line Reports for Tutorials

    E-Print Network [OSTI]

    Wallace, Mark

    OxCORT Oxford Colleges On-line Reports for Tutorials Tutor Role Version 4.5 BSP Training Team Overview of Tutorial reports...................................................................8 Overview of Revision Class reports.......................................................8 Report states

  1. Evaluating two experimental approaches for measuring ecosystem carbon oxidation state and oxidative ratio

    E-Print Network [OSTI]

    Masiello, C. A; Gallagher, M. E; Randerson, J. T; Deco, R. M; Chadwick, O. A

    2008-01-01

    error on measurements (0.045 C ox units). Accuracy inOR units), with the most accurate measurements resultingmost accurate OR measurement technique (±0.011 OR units). 4.

  2. David Michael Patrick Mingos FRS Principal of St Edmund Hall from 1999-2009

    E-Print Network [OSTI]

    Wallace, Mark

    .mingos@seh.ox.ac.uk Home Telephone 01844 291557 Date of birth: 6th August 1944 Nationality British Marital Status: Married Xi'an Petroleum Institute, China 1995 Outstanding Paper Award International Microwave Power Institute

  3. Atmos. Chem. Phys., 14, 82558267, 2014 www.atmos-chem-phys.net/14/8255/2014/

    E-Print Network [OSTI]

    Pierce, Jeffrey

    of nitrogen ox- ides (NOx), sulfur dioxide (SO2), carbon dioxide (CO2) and Published by Copernicus. Particles in the atmosphere are of concern due to their toxic properties and effects on climate. In coastal

  4. QTL Study Design from an Information Perspective

    E-Print Network [OSTI]

    Sen, Saunak; Satagopan, Jaya; Churchill, Gary A.

    2005-01-01

    http://maxima.sourceforge.net). Both R and Maxima are freelyEN , AND G. C HURCHILL (2003) R/qtl: Qtl mapping in experi-Hall, London. C OX , D. AND N. R EID (2000) The theory of

  5. 1498 Biochemical Society Transactions (2014) Volume 42, part 6 Imaging tumour heterogeneity of the

    E-Print Network [OSTI]

    Coolen, ACC "Ton"

    2014-01-01

    , University of Oxford, Old Road Campus Research Building, Roosevelt Drive, Oxford OX3 7DQ, U.K. Biomaterials, Biomimetics and Biophotonics Division, King's College London Dental Institute, London SE1 9RT, U

  6. Mathematical Analysis of a Model of River Channel Formation J. I. DIAZ,1

    E-Print Network [OSTI]

    Díaz, Jesús Ildefonso

    to form, 1 Departamento de Matema´tica Aplicada, Universidad Complutense de Madrid, 28040 Madrid, Spain. E, Limerick, Ireland. E-mail: fowler@math.ox.ac.uk. 3 Departamento de Matema´tica Aplicada, E

  7. Supported Au-CuO Catalysts for Low Temperature CO Oxidation

    Broader source: Energy.gov [DOE]

    Catalytic properties of Au-CuOx/SiO2 are investigated in removing pollutants from simulated automotive exhaust to meet an increasing demand for high emissions control at low temperatures.

  8. Bol. SAO (1999) Vol. X No. 18-19 CUERVO et al.

    E-Print Network [OSTI]

    Cuervo, Andrés

    1999-01-01

    .salaman@zoo.ox.ac.uk Introducción Los crácidos son muy importantes en la dinámica de los bosques neotropicales; sus bajas densidades con el ánimo de localizar poblaciones de C. alber

  9. Journal of Theoretical Biology 244 (2007) 703713 Metabolic changes during carcinogenesis

    E-Print Network [OSTI]

    Maini, Philip K.

    2007-01-01

    for Integrative Systems Biology, Manchester Interdisciplina 85724-5067, USA c Oxford University Computing Laboratory, Wolfson Building, Parks Road, Oxford, OX1 3QD plays a crucial role during carcinogenesis. We develop a hybrid cellular automation approach

  10. Association between oxygen vacancies and trivalent dopants in crystalline and amorphous ZnO

    E-Print Network [OSTI]

    Muñoz Ramo, D.; Chroneos, A.; Rushton, M. J. D.; Bristowe, P. D.

    2014-03-31

    is correlated with the changes in structure of the amorphous cell, where an increasing number of InOx units become linked to each other and provide favoured pathways for the electron conduction. 4. CONCLUSIONS Several computational techniques are used...

  11. Bringing up OpenSky: A Large-scale ADS-B Sensor Network for Research

    E-Print Network [OSTI]

    Lenders, Vincent

    Strohmeier, Vincent Lenders, Ivan Martinovic, Matthias Wilhelm TU Kaiserslautern University of Oxford}@cs.uni-kl.de {martin.strohmeier, vincent.lenders@armasuisse.ch ivan.martinovic}@cs.ox.ac.uk Abstract

  12. Experimental Analysis of Attacks on Next Generation Air Traffic Communication

    E-Print Network [OSTI]

    Lenders, Vincent

    , Vincent Lenders2 , and Ivan Martinovic3 1 TU Kaiserslautern, Germany schaefer@cs.uni-kl.de 2 armasuisse, Switzerland vincent.lenders@armasuisse.ch 3 University of Oxford, UK ivan.martinovic@cs.ox.ac.uk Abstract

  13. Time-Homogeneous Diffusions with a Given Marginal at a Random Time

    E-Print Network [OSTI]

    on the occasion of his 60th birthday. e-mail: A.M.G.Cox@bath.ac.uk; web: www.maths.bath.ac.uk/mapamgc/ e-mail: D.Hobson@warwick.ac.uk; web: www.warwick.ac.uk/go/dhobson/ §e-mail: obloj@maths.ox.ac.uk; web: www.maths.ox.ac.uk/obloj/ 1 #12 Krein's spectral theory of strings. Both of the above proofs exploit deep known results. In the final

  14. Ellagic acid protects endothelial cells from oxidized low-density lipoprotein-induced apoptosis by modulating the PI3K/Akt/eNOS pathway

    SciTech Connect (OSTI)

    Ou, Hsiu-Chung [Department of Physical Therapy and Graduate Institute of Rehabilitation Science, China Medical University, Taichung, Taiwan (China); Lee, Wen-Jane [Department of Medical Research, Taichung Veterans General Hospital, Taichung, Taiwan (China); Tunghai University, Taichung, Taiwan (China); Lee, Shin-Da [Department of Physical Therapy and Graduate Institute of Rehabilitation Science, China Medical University, Taichung, Taiwan (China); Department of Healthcare Administration, Asia University, Taichung, Taiwan (China); Huang, Chih-Yang [Graduate Institute of Basic Medical Science, China Medical University, Taiwan (China); Department of Health and Nutrition Biotechnology, Asia University, Taichung, Taiwan (China); Chiu, Tsan-Hung [Department of Obstetrics and Gynecology, China Medical University Hospital, Taiwan (China); Tsai, Kun-Ling [Graduate Institute of Clinical Medical Science, China Medical University, Taichung, Taiwan (China); Hsu, Wen-Cheng [Department of Metabolism and Endocrinology, Tungs' Taichung MetroHarbor Hospital, Taichung, Taiwan (China); Sheu, Wayne Huey-Herng, E-mail: whhsheu@mail.cmu.edu.t [Department of Internal Medicine, Division of Endocrinology and Metabolism, Taichung Veterans General Hospital, Taichung, Taiwan (China); Department of Medicine, Chung Shan Medical University, Taichung, Taiwan (China); Institute of Medical Technology, National Chung-Hsing University, Taichung, Taiwan (China); College of Medicine, National Yang Ming University School of Medicine, Taipei, Taiwan (China)

    2010-10-15

    Endothelial apoptosis is a driving force in atherosclerosis development. Oxidized low-density lipoprotein (oxLDL) promotes inflammatory and thrombotic processes and is highly atherogenic, as it stimulates macrophage cholesterol accumulation and foam cell formation. Previous studies have shown that the phosphatidylinositol 3-kinase/Akt/endothelial nitric oxide synthase/nitric oxide (PI3K/Akt/eNOS/NO) pathway is involved in oxLDL-induced endothelial apoptosis. Ellagic acid, a natural polyphenol found in berries and nuts, has in recent years been the subject of intense research within the fields of cancer and inflammation. However, its protective effects against oxLDL-induced injury in vascular endothelial cells have not been clarified. In the present study, we investigated the anti-apoptotic effect of ellagic acid in human umbilical vein endothelial cells (HUVECs) exposed to oxLDL and explored the possible mechanisms. Our results showed that pretreatment with ellagic acid (5-20 {mu}M) significantly attenuated oxLDL-induced cytotoxicity, apoptotic features, and generation of reactive oxygen species (ROS). In addition, the anti-apoptotic effect of ellagic acid was partially inhibited by a PI3K inhibitor (wortmannin) and a specific eNOS inhibitor (cavtratin) but not by an ERK inhibitor (PD98059). In exploring the underlying mechanisms of ellagic acid action, we found that oxLDL decreased Akt and eNOS phosphorylation, which in turn activated NF-{kappa}B and downstream pro-apoptotic signaling events including calcium accumulation, destabilization of mitochondrial permeability, and disruption of the balance between pro- and anti-apoptotic Bcl-2 proteins. Those alterations induced by oxLDL, however, were attenuated by pretreatment with ellagic acid. The inhibition of oxLDL-induced endothelial apoptosis by ellagic acid is due at least in part to its anti-oxidant activity and its ability to modulate the PI3K/Akt/eNOS signaling pathway.

  15. Multi-stage, isothermal CO preferential oxidation reactor

    DOE Patents [OSTI]

    Skala, Glenn William (Churchville, NY); Brundage, Mark A. (Pittsford, NY); Borup, Rodney Lynn (East Rochester, NY); Pettit, William Henry (Rochester, NY); Stukey, Kevin (W. Henrietta, NY); Hart-Predmore, David James (Rochester, NY); Fairchok, Joel (Alexander, NY)

    2000-01-01

    A multi-stage, isothermal, carbon monoxide preferential oxidation (PrOx) reactor comprising a plurality of serially arranged, catalyzed heat exchangers, each separated from the next by a mixing chamber for homogenizing the gases exiting one heat exchanger and entering the next. In a preferred embodiment, at least some of the air used in the PrOx reaction is injected directly into the mixing chamber between the catalyzed heat exchangers.

  16. Direct Epoxidation of Propylene over Stabilized Cu+ Surface Sites on Ti Modified Cu2O

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

    Yang, X.; Kattel, S.; Xiong, K.; Mudiyanselage, K.; Rykov, S.; Senanayake, S. D.; Rodriguez, J. A.; Liu, P.; Stacchiola, D. J.; Chen, J. G.

    2015-07-17

    Direct propylene epoxidation by O2 is a challenging reaction because of the strong tendency for complete combustion. Results from the current study demonstrate the feasibility to tune the epoxidation selectivity by generating highly dispersed and stabilized Cu+ active sites in a TiCuOx mixed oxide. The TiCuOx surface anchors the key surface intermediate, oxametallacycle, leading to higher selectivity for epoxidation of propylene.

  17. Mild partial deoxygenation of esters catalyzed by an oxazolinylborate-coordinated rhodium silylene

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

    Xu, Songchen; Boschen, Jeffery S.; Biswas, Abhranil; Kobayashi, Takeshi; Pruski, Marek; Windus, Theresa L.; Sadow, Aaron D.

    2015-08-17

    An electrophilic, coordinatively unsaturated rhodium complex supported by borate-linked oxazoline, oxazoline-coordinated silylene, and N-heterocyclic carbene donors [{?³-N,Si,C-PhB(OxMe²)(OxMe²SiHPh)ImMes}Rh(H)CO][HB(C?F?)?] (2, OxMe² = 4,4-dimethyl-2-oxazoline; ImMes = 1-mesitylimidazole) is synthesized from the neutral rhodium silyl {PhB(OxMe²)?ImMes}RhH(SiH2Ph)CO (1) and B(C6F5)3. The unusual oxazoline-coordinated silylene structure in 2 is proposed to form by rearrangement of an unobserved isomeric cationic rhodium silylene species [{PhB(OxMe²)?ImMes}RhH(SiHPh)CO][HB(C?F?)?] generated by H abstraction. Complex 2 catalyzes reductions of organic carbonyl compounds with silanes to give hydrosilylation products or deoxygenation products. The pathway to these reactions is primarily influenced by the degree of substitution of the organosilane. Reactions with primary silanes give deoxygenationmore »of esters to ethers, amides to amines, and ketones and aldehydes to hydrocarbons, whereas tertiary silanes react to give 1,2-hydrosilylation of the carbonyl functionality. In contrast, the strong Lewis acid B(C?F?)? catalyzes the complete deoxygenation of carbonyl compounds to hydrocarbons with PhSiH? as the reducing agent.« less

  18. Intercorrelations of certain variables of the Lee-Thorpe Occupational Interest Inventory with certain variables measured by the How Well Do You Know Your Interests inventory 

    E-Print Network [OSTI]

    Thompson, Stephen Michael

    1970-01-01

    CQ IPTmRCQR'b'', , ATIQjl$ QP C R 'j)IN I'AR Lj il', I'P~ QR T', C I K', -". ". ICOSI Z GCC UPA IONAT. INTA'~ 4'HT INVI. 'is'TCR Y ITl Ci"''RTA IN 7j RIALD 3 11ZAE JRED 751 Thi' llQM 'r&'LD DO YG~J ~'Q&J YOUR I'?;TERFCI'S IIuViNTORY A Thesis... u si orj 2j' gl III &iFTPOD Sample . ~ GroIIP s Treat. :lent of Data $4 $6 IV. o4SUITS AND DISCUSSION HIP)LIOGP~I-'iP'. VITA. 57 60 LIST OF TABIEH Kaf e in ens Stand "i"d Dev atj on. and RenHe oz Subtests for Each Group: Jerikins...

  19. Fertilizer Statistics for Texas, 1926-1938. 

    E-Print Network [OSTI]

    Fraps, G. S. (George Stronach); Ogier, T. L. (Thomas Louis)

    1939-01-01

    4-84 8107 8758 6995 8384 6-10-7 4901 4671 5109 6009 ........... 6-8-4 4597 2920 6-12-6 3643 3664 4029 4766 Super- pllosphate, 18% 3516 2743 3408 3249 Soper- phosphate, 20VG 3377 2642 2517 1416 3-10-3 2961 4150 3500 3450 Sulphate of ammonia... 2548 1610 1588 1139 4-10-0 2137 2132 2040 1003 16-20-0 1606 1637 692 570 11-48-0 1585 1361 773 670 5-15-5 1525 1133 928 1420 Bone meal 1Y42 1095 1283 1232 6-9-3 1056 1221 751 598 Nitrate of soda. 15YG and 16r0 1048 1314 1080 1146 Lawn...

  20. Fourier series and convolution 

    E-Print Network [OSTI]

    Kleiner, Alexander Francis

    1966-01-01

    ' their con- volntion geh defined bp f fr geh(x) ~ ? J g(z-t)h(t) dt. o In 1937 Littlewood snd Palsy [2 ~ p. 110] abased that if fcL y for X?pc~, then there exist gcL snd hei, ecch Chat' f~sh. Tao pears later salem {5; yp. 198-14] entended this rssnlt...). That is (] e. ggn gi L, - aVCm. , --yceftiwe ing. SentfCCOOua'in. (O, r) ]. - ? -. Xn' ths ctheorem~ -ceasicfqr s fcunktion f-"'sech. ' that. fcL (ynlp. . Wa - ohtfkhc. the. &88lclt. fcIgab where gcc] and bcL ? (yg) . ? %le gree f of- thf s...

  1. Neddylation promotes ubiquitylation and release of Ku from DNA damage sites

    E-Print Network [OSTI]

    Brown, Jessica S.; Lukashchuk, Natalia; Sczaniecka-Clift, Matylda; Britton, Sébastien; le Sage, Carlos; Calsou, Patrick; Beli, Petra; Galanty, Yaron; Jackson, Stephen P.

    2015-04-23

    -Universite´ Paul Sabatier, .ac.uk (Y.G.), s.jackson@gurdon.cam.ac.uk (S.P.J.) commons.org/licenses/by/4.0/). DNA-PKcs, PAXX, and end-processing factors leading to repair by the DNA ligase IV/XRCC4/XLF complex (Davis and Chen, 2013; Grundy et al., 2014; Wang... , T., Chou, Y.C., Willems, A.R., Meyer-Schaller, N., Hecht, M.L., Tyers, M., Peter, M., and Sicheri, F. (2008). Dcn1 functions as a scaffold-type E3 ligase for cullin neddylation. Mol. Cell 29, 23–35. Li, T., Guan, J., Huang, Z., Hu, X., and Zheng, X...

  2. The use of radar data in the investigation of precipitation distributions and anomalous propagation 

    E-Print Network [OSTI]

    Truppi, Lawrence Ernest

    1957-01-01

    ~', ". 'f"' & 'P'3 ", , 3;CILflCIP. '. . I! l !lCI, XIII' . Qfif 30 fifCILVBIZ~Z. 'I ClI 'I V;YG VVff'3'P, dC ', 3". ff '&3Z SVXBI JO . =8: J1 2 'A V X 2%~ozbeq. eg goagqnS so&sg Enrnusl dONSIOS dO KKJSVN Jo eaxSap aqua uoJ eguaeegynbaz aqua Jo qua...Lxwnuep 30iV. '20S 3C P, ':IJGKI go eez3ap aqua cog egueurezynbez aqua go guantIIygIng Iaygmd uy sexed go a3aIIog Ieoyuaqoaff pua IamgInoyzqy aqua go Iooqog agenpezg a~ og peggILqng Icf BflHI 3 . ". fOif, fPJifWI ?C'I I'fO'fdC'Pif, "f1C...

  3. Final Report: Stability and Novel Properties of Magnetic Materials and Ferromagnet / Insulator Interfaces

    SciTech Connect (OSTI)

    Voyles, Paul

    2013-07-24

    We report investigations of the synthesis, structure, and properties of new materials for spintronic applications integrated onto silicon substrates. Our primary focus is materials with very high, negative, intrinsic spin polarization of the density of states at the Fermi level. We have developed a new synthesis method for Fe3O4 thin films through selective oxidation of Fe, resulting in smooth, low-defect density films. We have synthesized Fe4N films and shown that they preferentially oxidize to Fe3O4. When integrated into magnetic tunnel junctions consisting of Fe4N / AlOx / Fe, oxidation at the Fe4N / AlOx interface creates Fe3O4, leading to negative tunneling magnetoresistance (TMR). Oxidation of Fe in nominally symmetric CoFe / AlOx / CoFe also produces Fe3O4 and negative TMR under selected oxidation conditions.

  4. uuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu uuuuuuuuuuuuuuuuuuuuuu

    E-Print Network [OSTI]

    Mignotte, Max

    © q qr z p r x z x m n q x ~{ nx n r ox x ns u x z |~x © q p r x z x m n x n r ox n} pq x © p © © t ~x © · nx snt pm q x © poq © q x © q t ox m nx © o yt pm © © x yz x m n{ nt pm q x © spm np r o © x ! wm{ x · nx snt pm q tox snx q x © o yt pm © © { m © ~x © spm np r o © © x yz x m n

  5. Study of the simultaneous heat and mass transfer in two-dimensional porous media 

    E-Print Network [OSTI]

    Suh, Young Bae

    1988-01-01

    ? dimensional one, Eq. (3 ? 10), as 4(X, Fo & (Fo), , ) = P C?cos(nri '6 )ezp( ? n rr LuFo)+ & (0'r ), , & a= 1 (3 ? 10o) We turn our attention now to the concept of dryout in a porous medium, when the moisture profile has reached its steady ? state...@T(X, Y, Fo)) = O(X, Y, s) Boundar Condition 1: O(0, Y, s) = 1/s O(1, 1', $) = 0 O(X, O, s) = 0 O(X, l, s) = 0 A separa, tion of variables method yields 4 sinh ((1 ? X)gs +n rr /R ] O( X, Y, ) = P sin(nrr Y) (4 ? 4) . . ;. ~ j~+ The original...

  6. Graded index and randomly oriented core-shell silicon nanowires with broadband and wide angle antireflection for photovoltaic cell applications

    E-Print Network [OSTI]

    Pignalosa, P; Qiao, L; Tseng, M; Yi, Yasha

    2011-01-01

    Antireflection with broadband and wide angle properties is important for a wide range of applications on photovoltaic cells and display. The SiOx shell layer provides a natural antireflection from air to the Si core absorption layer. In this work, we have demonstrated the random core-shell silicon nanowires with both broadband (from 400nm to 900nm) and wide angle (from normal incidence to 60\\degree) antireflection characteristics within AM1.5 solar spectrum. The graded index structure from the randomly oriented core-shell (Air/SiOx/Si) nanowires may provide a potential avenue to realize a broadband and wide angle antireflection layer.

  7. Engineering exotic phases for topologically protected quantum computation by emulating quantum dimer models RID B-7826-2008 

    E-Print Network [OSTI]

    Albuquerque, A. Fabricio; Katzgraber, Helmut G.; Troyer, Matthias; Blatter, Gianni.

    2008-01-01

    1934. 5, Osgood, N ~ R "A Theory of Flexure for Beams uith Nonparallel Extreme Fibers. " Journal of ~Alied Eechanics3 Vol. VIS No. 13 (SePtemberp 1939). PP. A 122-126. 6. Saksena~ G. B. "Shear Stress in Tapering Beam. " Aircraft Engineer inE, Vol... derived in mgr tcnct on the theory of elastioity, ox ccrc ~ Y(p-q) ? 4-&x The plus or adnus sign is used depending on the angle 8 and ths shear Sheol groyono/ Figure 13 If 9 is batsmen the shear diagonal and Og, then Oj is aigsbraioa13y ~ than OX...

  8. Colour Invariant Head Pose Classification in Low Resolution Video

    E-Print Network [OSTI]

    Oxford, University of

    Colour Invariant Head Pose Classification in Low Resolution Video Ben Benfold and Ian Reid,ian}@robots.ox.ac.uk Abstract This paper presents an algorithm for the classification of head pose in low res- olution video, a pose estimation from a low resolution head image can be used to determine whether or not a close

  9. A Tool for Training and Assistance in Emergency Response Planning Gheorghe Tecuci, Mihai Boicu, Thomas Hajduk,

    E-Print Network [OSTI]

    Tecuci, Gheorghe

    that there is a liquid pouring from underneath the truck's trailer. When the light changes the truck turns is provided. A sample emergency situation is the following one. "While waiting for a light to change at the intersection of Braddock Road and Ox Road, the driver of a tanker truck is told by a passer

  10. [forthcoming in Library Trends] LIS as Applied Philosophy of Information: A Reappraisal

    E-Print Network [OSTI]

    Floridi, Luciano

    [forthcoming in Library Trends] Afterword LIS as Applied Philosophy of Information: A Reappraisal of Philosophy, Oxford University, Wolfson College, OX2 6UD, Oxford, UK Library information science (LIS) should layer where we deal with libraries, their contents and services. Compare this with the accountant

  11. The effects of ethylenediurea and sodium erythorbate on photosynthetic function of ozone-exposed loblolly pine seedlings 

    E-Print Network [OSTI]

    Kuehler, Eric Anthony

    1995-01-01

    -top chambers in east Texas for one growing season beginning in April 1994 while being exposed to either sub-ambient (CF), approximate ambient (NF), 1.5Y,, 2.OX, or 2.5X ambient ozone levels. Net photosynthesis (A), stomatal conductance (g), and chloroplast...

  12. Project 3 Integrative Genomics (IG) Objective: To give a presentation of about 40-90 minutes duration at the end of the week covering the

    E-Print Network [OSTI]

    Goldschmidt, Christina

    Project 3 ­ Integrative Genomics (IG) Objective: To give a presentation of about 40-90 minutes duration at the end of the week covering the key aspects of the integrative genomics, which is the combined) "Integrative Genomics and Functional Explanation" downloadable from http://www.stats.ox.ac.uk/research/genome

  13. Quantifying chaos in the atmosphere Richard Washington

    E-Print Network [OSTI]

    Washington, Richard

    , Mansfield Road, Oxford OX1 3TB, UK Abstract: The atmosphere is known to be forced by a variety of energy sources, including radiation and heat fluxes emanating from the boundary layer associated with sea as the competing champions controlling process in the physical world. With or without Einstein, there can

  14. Intro to mixed Hodge modules

    E-Print Network [OSTI]

    2011-08-15

    differential operators DX(U) on U consists of C-linear endomorphisms of. OX(U) defined .... characteristic variety of i+M is Tp. A submodule of a holonomic module is ..... 14. Donu Arapura. Exercise 3.4 An n dimensional nilpotent orbit of weight m consists of. • a filtered complex ... with the same asymptotic behaviour. Thus the ...

  15. Open Archive TOULOUSE Archive Ouverte (OATAO) OATAO is an open access repository that collects the work of Toulouse researchers and

    E-Print Network [OSTI]

    Mailhes, Corinne

    . On the other hand, titanium nitride has a good thermal and electrical conductivity and a high hardness. Ti coatings [2], electrically switchable windows [3], transparent IR window electrodes [4], effectiveOxNy Hard coatings Titanium oxynitride coatings were deposited on various substrates by an original

  16. Computing Laboratory QUANTITATIVE MULTI-OBJECTIVE

    E-Print Network [OSTI]

    Norman, Gethin

    , for ex- ample, energy usage or performance metrics. Quantitative properties of these models are expressed", "energy usage" or "number of messages successfully sent". Properties of PAs can be specified using well Oxford University Computing Laboratory, Parks Road, Oxford, OX1 3QD, UK 2 School of Computing Science

  17. Quantitative Multi-Objective Verification for Probabilistic Systems

    E-Print Network [OSTI]

    Oxford, University of

    as probabilistic automata, enriched with cost or reward structures that capture, for ex- ample, energy usage of system behaviour, for example "number of time steps", "energy usage" or "number of messages successfully, Parks Road, Oxford, OX1 3QD, UK 2 School of Computing Science, University of Glasgow, Glasgow, G12 8RZ

  18. Microstructure of cosputter-deposited metal-and oxide-MoS2 solid lubricant thin films

    E-Print Network [OSTI]

    Marks, Laurence D.

    Microstructure of cosputter-deposited metal- and oxide-MoS2 solid lubricant thin films M. R of cosputtering small amounts of Ni (3%, 9%) and SbOx (20%) on the final microstructure of MoS2 lubricant thin performance is discussed. I. INTRODUCTION Sputter-deposited films of MoS2 have been used as solid lubricants

  19. Melamine Structures on the Au(111) Surface Fabien Silly,*,, Adam Q. Shaw, Martin R. Castell, G. A. D. Briggs, Manuela Mura,

    E-Print Network [OSTI]

    Castell, Martin

    Versity of Oxford, Parks Road, Oxford OX1 3PH, U.K., Zernike Institute for AdVanced Materials, Rijksuni-assembly techniques may provide a solution to this and are, therefore, under intense investigation. The precise. Melamine molecules can form hydrogen bonds with each other, so that, depending on the particular

  20. Nuclear Physics B 561 1999 188240 www.elsevier.nlrlocaternpe

    E-Print Network [OSTI]

    Kaiser, David

    Nuclear Physics B 561 1999 188­240 www.elsevier.nlrlocaternpe Metric preheating Science B.V. All rights reserved. Z .PII: S0550-3213 99 00495-2 #12;( )B.A. Bassett et al.rNuclear Physics d a Department of Theoretical Physics, Oxford UniÕersity, Oxford OX1 3NP, UK b Department

  1. Evidence for Triplet Superconductivity in a Superconductor-Ferromagnet Spin Valve P. V. Leksin,1

    E-Print Network [OSTI]

    Fominov, Yakov

    Evidence for Triplet Superconductivity in a Superconductor-Ferromagnet Spin Valve P. V. Leksin,1 N on the mutual orientation of magnetizations of Fe1 and Fe2 layers in the spin valve system CoOx=Fe1=Cu=Fe2=Pb of the SC triplet spin valve theory gives direct evidence for the long-range triplet superconductivity

  2. Main Chamber Neutral Pressure in Alcator C-Mod and JET C S Pitcher, S K Erents*, W Fundamenski*, B LaBombard, B Lipschultz, G F Matthews*, G

    E-Print Network [OSTI]

    Pitcher, C. S.

    that the main plasma-wall interaction is at the target plates and that the gas resulting from this interaction, Abingdon, Oxon OX14 3DB,UK Main chamber gas can have a number of deleterious effects in divertor tokamaks. First, the gas-plasma interaction will generate neutrals which freely cross field lines and bombard

  3. NATURE BIOTECHNOLOGY VOL 18 JULY 2000 http://biotech.nature.com 775 Highly chlorinated compounds are refractory and threaten the envi-

    E-Print Network [OSTI]

    Wood, Thomas K.

    stutzeri OX1 was isolated from activated sludge of a wastewater treatment plant10 and grows on o is regulated under the Safe Drinking Water Act to a maximum contaminant level of 5 p.p.b. Bacterial degradation risk posed by soil and water contami- nated by PCE, the ability of a monooxygenase to degrade PCE aero

  4. Perpendicular local magnetization under voltage control in Ni films on ferroelectric BaTiO3 substrates

    E-Print Network [OSTI]

    Ghidini, Massimo; Maccherozzi, Francesco; Moya, Xavier; Phillips, Lee C.; Yan, Wenjing; Soussi, Jordane; Métallier, Nicolas; Vickers, Mary E.; Steinke, Nina -J.; Mansell, Rhodri; Barnes, Crispin H. W.; Dhesi, Sarnjeet S.; Mathur, Neil D.

    2015-01-12

    University of Cambridge Cambridge, CB3 0HE , UK Dr. N.-J. Steinke ISIS, Harwell Science and Innovation Campus Didcot , Oxfordshire, OX11 0QX , UK DOI: 10.1002/adma.201404799 and destroy an OOP anisotropy in large contiguous areas of Ni fi lms...

  5. Structural Evidence for a Ligand Coordination Switch in Liver Alcohol Dehydrogenase

    E-Print Network [OSTI]

    for Chemistry and Chemical Engineering, Lund UniVersity, P.O. Box 124, SE-22100 Lund, Sweden ReceiVed No the transfer of a hydride ion between a red-ox pair consisting of NAD(H)/NADP(H) and a great variety the MDRs, but the hydride transfer reaction between the zinc- bound substrate and the pyridine ring

  6. Topics in Computational Biology Iceland 2.6.9-6.6.9

    E-Print Network [OSTI]

    Goldschmidt, Christina

    Genomics: 1000 genomes, Integrative Genomics: Basic data types, Comparative Genomics: Signals, Comparative Biology: Networks, Integrative Data Analysis ­ Mapping, Metabolomics, Proteomics, Transcriptomics, Genomic can be found at http://www.stats.ox.ac.uk/genome/readingprojects. · Analysis projects, where all

  7. RESEARCH ARTICLE Living on the edge: quantifying the structure

    E-Print Network [OSTI]

    Malhi, Yadvinder

    House, Abingdon Road, Tubney, Abingdon OX13 5QL, UK E. M. Slade Spatial Foodweb Ecology Group microclimatic and biological changes at the forest edge. If we are to rigorously assess the ecological impacts estimates can be combined with ecological response functions, to allow us to generate biologically

  8. A HIERARCHY OF EMPIRICAL MODELS OF PLASMA PROFILES AND TRANSPORT

    E-Print Network [OSTI]

    average density, #22; n e (in 10 19 =m 3 ), the absorbed power, P (in MW), the e#11;ective ion charge, ZA HIERARCHY OF EMPIRICAL MODELS OF PLASMA PROFILES AND TRANSPORT Kaya Imre and Kurt S. Riedel New, Oxon, OX14 3EA, UK Abstract Two families of statistical models of increasing statistical complexity

  9. Oxygen Kinetic Isotope Effects upon Catalytic Water Oxidation by a Monomeric Ruthenium Complex

    E-Print Network [OSTI]

    Roth, Justine P.

    Alfredo M. Angeles-Boza and Justine P. Roth* Department of Chemistry, Johns Hopkins University, 3400 North experimental data. INTRODUCTION Progress toward establishing a hydrogen economy1 requires a greater of oxidant have confirmed that 1 equiv of O2 is evolved every time 4 equiv of oxidant [ox] and base [B

  10. ReaxFF Reactive Force Field for Molecular Dynamics Simulations of Hydrocarbon Kimberly Chenoweth, Adri C. T. van Duin, and William A. Goddard, III*

    E-Print Network [OSTI]

    Goddard III, William A.

    MoOx heterogeneous cata- lysts,22 fuel cells,23 crack propagation in silicon crystals,24 dissociation of H2 on Pt additional transition states and chemical reactivity of systems relevant to these reactions and optimizedFF potential obtained after parameter optimization, we performed a range of NVT-MD simulations on various

  11. MAIN CHAMBER NEUTRAL PRESSURE IN

    E-Print Network [OSTI]

    Pitcher, C. S.

    MAIN CHAMBER NEUTRAL PRESSURE IN ALCATOR C-MOD AND JET C S Pitcher, S K Erents*, W Fundamenski*, B on Controlled Fusion and Plasma Physics 18 ­ 22 June 1999, Madeira, Portugal MAIN CHAMBER NEUTRAL PRESSURE Science Centre, Abingdon, Oxon OX14 3DB,UK #12;(1) Introduction · main chamber gas can have a number

  12. MAIN CHAMBER NEUTRAL PRESSURE IN ALCATOR C-MOD AND JET C S Pitcher, S K Erents*, W Fundamenski*, B LaBombard, B Lipschultz, G F Matthews*,

    E-Print Network [OSTI]

    Pitcher, C. S.

    MAIN CHAMBER NEUTRAL PRESSURE IN ALCATOR C-MOD AND JET C S Pitcher, S K Erents*, W Fundamenski*, B *Euratom/UKAEA Fusion Association, Culham Science Centre, Abingdon, Oxon OX14 3DB,UK 1 Introduction Main chamber gas in a divertor tokamak arises due to recombination of plasma ions either directly in the main

  13. Time change Almut E. D. Veraart

    E-Print Network [OSTI]

    Time change Almut E. D. Veraart CREATES University of Aarhus Aarhus Denmark +45 8942 2142 averaart 272595 winkel@stats.ox.ac.uk TimeChange8.tex ­ LaTeX2e Abstract The mathematical concept of time­changing continuous­time stochastic pro- cesses can be regarded as one of the standard tools for building financial

  14. Room-temperature mid-infrared laser sensor for trace gas detection

    E-Print Network [OSTI]

    important atmospheric trace gases such as nitric oxide NO , carbon monoxide CO , nitrous ox- ide N2O , formaldehyde H2CO , methane CH4 , and sulfur dioxide SO2 . Applications that require such measurements include- bines high-speed, high-precision, remote sensing capabilities and convenient access to wavelengths

  15. Spectroscopic characterization of monometallic and bimetallic model catalysts 

    E-Print Network [OSTI]

    Luo, Kai

    2009-06-02

    is the characterization of the surface composition, morphology, and electronic/geometric structure of the following catalysts: Au/TiOx, Au-Pd/Mo(110), Au- Pd/SiO2, Cu-Pd/Mo(110), and Sn/Pd(100). Structure-reactivity correlations during surface-alloy formation...

  16. I I

    Office of Legacy Management (LM)

    - - --- --- -e-e. . 3.7' < 50 T rwi - --L-P--, I- -- ----- ' 18 -- ,'. ,r,wood*nl,or,orIcc. 50 V.tn IIICII rlitC*:. Vo-.l'kwd. Ilcw Jt.t:.,:y OX;?:;. f'l,.n ' b...

  17. Dislocation nucleation from near surface void under static tensile stress in Cu

    E-Print Network [OSTI]

    Nordlund, Kai

    development at CERN.10 Also, the design of the ITER fusion reactor will be modified to involve an all, Finland 2 EURATOM/CCFE Fusion Association, Culham Science Centre, Abingdon OX14 3DB, United Kingdom is one of the critical factors limiting the performance of the Compact Linear Collider currently under

  18. Kinetics and Mechanism of Ethane Oxidation to Acetic Acid on Catalysts Based on Mo-V-Nb Oxides

    E-Print Network [OSTI]

    Iglesia, Enrique

    Kinetics and Mechanism of Ethane Oxidation to Acetic Acid on Catalysts Based on Mo-V-Nb Oxides and isotopic studies showed that C-H bond activation in ethane by surfaces essentially saturated with lattice oxygens is the sole kinetically relevant step in ethane oxidation on Mo-V-NbOx mixed oxides

  19. UNCORRECTED 2 The ontological interpretation of informational privacy

    E-Print Network [OSTI]

    Floridi, Luciano

    inves- 53tigations, witness this special issue of Ethics and 54Information Technology; and there has and Information Ethics 5 Group, OUCL, Oxford University, Oxford, UK; Wolfson College, OX2 6UD, Oxford, UK 6 E the information flow within the space of information; (b) digital ICTs (information 11 and communication

  20. Two Approaches to the Philosophy of Information LUCIANO FLORIDI

    E-Print Network [OSTI]

    Floridi, Luciano

    turn and the ICT (Information and Communication Technologies) society have recently generated plenty and Information Ethics Group, Oxford University, Wolfson College, OX2 6UD, Oxford, UK; E-mail: lucianoTwo Approaches to the Philosophy of Information LUCIANO FLORIDI Dipartimento di Scienze

  1. CCFE-R(15)26-supplement February 2015

    E-Print Network [OSTI]

    CCFE-R(15)26-supplement February 2015 Mark R. Gilbert Jean-Christophe Sublet Robin A. Forrest PKA)26-supplement PKA distributions "This document is intended for publication in the open literature. It is made, Abingdon, Oxon, OX14 3DB, UK." CCFE Page 2 of 522 #12;CCFE-R(15)26-supplement PKA distributions

  2. MINERVA DATABASE Guidelines for Managing Intercollegiate Classes

    E-Print Network [OSTI]

    MINERVA DATABASE Guidelines for Managing Intercollegiate Classes The database can be accessed at http://minerva.maths.ox.ac.uk/ Minerva is a shared database run by the department for tutors, TAs enter reports on the attendance and marks of their students into the database. This should be done after

  3. STEVE RAYNER UNIVERSITY OF OXFORD

    E-Print Network [OSTI]

    STEVE RAYNER UNIVERSITY OF OXFORD James Martin Professor of Science and Civilization School Business School Professorial Fellow, Keble College 64 Banbury Road Oxford OX2 6PG +44 (0)1865 288938 steve.rayner BREAKTHROUGH INSTIUTE Senior Fellow #12;Steve Rayner ­ March 2012 2 CAREER SUMMARY Steve Rayner is James Martin

  4. An Integrated Electric Power Supply Chain and Fuel Market Network Framework: Theoretical Modeling with Empirical Analysis for New England

    E-Print Network [OSTI]

    Nagurney, Anna

    An Integrated Electric Power Supply Chain and Fuel Market Network Framework: Theoretical Modeling regions and multiple electricity markets under deregulation to quantify the interactions in electric power an oligopolistic electricity market model with a nitrogen ox- ide permit market, and provided examples based

  5. MNRAS 435, 27532763 (2013) doi:10.1093/mnras/stt1369 Advance Access publication 2013 September 21

    E-Print Network [OSTI]

    Baes, Maarten

    2013-01-01

    .26. For sources for which there is prior information that the H-ATLAS: estimating redshifts of Herschel sources from sub-mm fluxes E. A. Pearson,1, Keble Road, Oxford OX1 3RH, UK 17IRAM, Institut de Radio Astronomie Millimtrique, 300 rue de la Piscine

  6. Atmos. Chem. Phys., 9, 30493060, 2009 www.atmos-chem-phys.net/9/3049/2009/

    E-Print Network [OSTI]

    Meskhidze, Nicholas

    applying these measured yields to estimate SOA formation from primary emissions of diesel engines and wood from anthro- pogenic sources, such as diesel and gasoline engines, wood burning and cooking operations that primary emissions undergo ox- idation in the gas phase, leading to SOA formation. This opens

  7. Isotopic Tracer Studies of Reaction Pathways for Propane Oxidative Dehydrogenation on Molybdenum Oxide Catalysts

    E-Print Network [OSTI]

    Iglesia, Enrique

    Isotopic Tracer Studies of Reaction Pathways for Propane Oxidative Dehydrogenation on Molybdenum of propane over ZrO2-supported MoOx catalysts. Competitive reactions of C3H6 and CH3 13 CH2CH3 showed combustion of propene, or by direct combustion of propane. A mixture of C3H8 and C3D8 undergoes oxidative

  8. MassverfringochSeparationsteknik februari 2015 bo Akademi -kemiteknik -Vrme-och strmningsteknik

    E-Print Network [OSTI]

    Zevenhoven, Ron

    " 111 )()( )( )( h d hh TThTTh TT d TTh Th total total totalh Heat flux h" (W/m2), local*-c1) 1212 1 1 2 1 2 1 1 11 ccmkccm kk m N m c ck m c c kmk N ox xy A oy xy

  9. Catalyst Dynamics during Carbon Nanotube and Si Nanowire CVD S. Hofmann,*

    E-Print Network [OSTI]

    Dunin-Borkowski, Rafal E.

    with the substrate. This allows us to grow gas-flow aligned, mm-long lateral nanotube arrays. Microsc Microanal 14]. In both cases, Si nuclei form by phase separation before expanding and pushing the catalyst onto the tip. Appl. Phys. 94, 6005 (2003) Fig. 1 ETEM images of Ni catalyst nanoparticles on SiOx membrane at 615°C

  10. Does the optical-to-X-ray energy distribution of quasars depend on optical luminosity?

    E-Print Network [OSTI]

    W. Yuan; J. Siebert; W. Brinkmann

    1998-05-09

    We report on a detailed analysis of the correlation between the optical-UV (Lo) and X-ray (Lx) luminosities of quasars by means of Monte Carlo simulations, using a realistic luminosity function. We find, for a quasar population with an intrinsically constant, mean X-ray loudness alpha_ox, that the simulated alpha_ox - Lo relation can exhibit various `apparent' properties, including an increasing alpha_ox with Lo, similar to what has been found from observations. The determining factor for this behavior turns out to be the relative strength of the dispersions of the luminosities, i.e. their deviations from the mean spectral energy distribution at the optical and X-ray bands, such that a dispersion larger for the optical luminosity than for the X-ray luminosity tends to result in an apparent correlation. We suggest that the observed alpha_ox - Lo correlation can be attributed, at least to some extent, to such an effect, and is thus not an underlying physical property. The consequences of taking into account the luminosity dispersions in an analysis of the observed luminosity correlations is briefly discussed. We note that similar considerations might also apply for the Baldwin effect.

  11. Measuring catchment-scale chemical retardation using spectral analysis of reactive and passive chemical tracer time series

    E-Print Network [OSTI]

    Kirchner, James W.

    Measuring catchment-scale chemical retardation using spectral analysis of reactive and passive for Ecology and Hydrology, McLean Building, Wallingford, Oxon OX10 8BB, UK Received 28 August 2002; revised 14, carrying soluble substances with it. Some chemical constituents are non- reactive; these act as passive

  12. IOP PUBLISHING JOURNAL OF PHYSICS: CONDENSED MATTER J. Phys.: Condens. Matter 20 (2008) 494237 (10pp) doi:10.1088/0953-8984/20/49/494237

    E-Print Network [OSTI]

    Schmidt, Matthias

    2008-01-01

    IOP PUBLISHING JOURNAL OF PHYSICS: CONDENSED MATTER J. Phys.: Condens. Matter 20 (2008) 494237 (10 OX1 3NP, UK 5 Institute of Physical Chemistry, Polish Academy of Sciences, Department III, Kasprzaka contributed greatly to the emerging understanding of dynamic phenomena in condensed matter. Examples include

  13. THE HEPATITIS C VIRUS E2p7 LOCALIZATION AND TOPOLOGY IN A RECOMBINANT SYSTEM

    E-Print Network [OSTI]

    THE HEPATITIS C VIRUS E2p7 LOCALIZATION AND TOPOLOGY IN A RECOMBINANT SYSTEM COSTIN I. POPESCU,1, 2 Road, Oxford, OX1 3QU, United Kingdom (Received September 1, 2009) The Hepatitis C virus (HCV) genome cleavage at the E2/p7 site is not regulated by changes in p7 membrane topology. Key words: hepatitis C

  14. Report no. 01/14 Analysis of Adjoint Error Correction for

    E-Print Network [OSTI]

    Pierce, Niles A.

    Applied & Computational Mathematics, California Institute of Technology, Pasadena, CA 91125, USA. niles Michael B. Giles Oxford University Computing Laboratory, Oxford, UK. giles@comlab.ox.ac.uk Niles A. Pierce conditions and boundary functionals. Numerical illustrations are provided for both linear and nonlin- ear

  15. Adjoint Error Correction for Integral Outputs

    E-Print Network [OSTI]

    Pierce, Niles A.

    University Computing Laboratory, Oxford OX1 3QD, United Kingdom 2 Applied & Computational Mathematics problem gives the e#11;ect of numerical approximations on the output func- tional of interest and nonlinear di#11;erential equations, incor- porating a range of numerical examples illustrating the ability

  16. Science and Parliament Research Council secondments -an

    E-Print Network [OSTI]

    Mather, Tamsin A.

    Science and Parliament Research Council secondments - an opportunity for postgraduates Dr Tamsin Mather University of Oxford tamsinm@earth.ox.ac.uk #12;Talk outline · What parliament does · Science.g., POST, clerks #12;Science and Parliament 0% 1% 2% 3% 4% 5% 6% 7% 1988/891989/901990

  17. J. Phys. A Math. Gen. 26 (1993) 529-548. Printed in the UK Energy fluctuations in homogeneous nucleation theory

    E-Print Network [OSTI]

    Ford, Ian

    1993-01-01

    OX11ORA. UK Received 5 May 1992 Abstract. For the analysis of the release of fission product aerosols vary greatly depending on the type of accident. A model of the effect of carrier gas on the nucleation clusters induced by~callisionswith carrier gas molecules. The rate of nucleation is altered since

  18. The bacteriology of normal urine

    E-Print Network [OSTI]

    Milligan, Jay McDonald

    1917-01-01

    to thirty minutes. There were three tubes prepared in the above manner for each man for each examination. The tubes were labelled respectively Part"A", Part ?TB", Part "C". A solution ox mercuric bi-chioride was used to sterilise as wexi as possible...

  19. RESEARCH ARTICLE Open Access Conservation of ciliary proteins in plants with no

    E-Print Network [OSTI]

    Schnaufer, Achim

    Department of Plant Sciences, University of Oxford, South Parks Rd, Oxford OX1 3RB, UK Full list of authorRESEARCH ARTICLE Open Access Conservation of ciliary proteins in plants with no cilia Matthew E lineages, with at least two losses occurring within the land plants. Whereas all non-seed plants produce

  20. DOI 10.1007/s11081-013-9226-6 A mixed-integer nonlinear program for the optimal

    E-Print Network [OSTI]

    the system include lead-acid batteries, photovoltaic cells, solid ox- ide fuel cells, heat exchangers integer restrictions, and modeling the variable electric efficiency of the fuel cells and the variable power using non-renewable technologies such as reciprocating engines, microturbines, and fuel cells

  1. Evaluation of Plasma Resistant Hollow Fiber Membranes For Artificial Lungs

    E-Print Network [OSTI]

    Federspiel, William J.

    Evaluation of Plasma Resistant Hollow Fiber Membranes For Artificial Lungs HEIDE J. EASH,* HEATHER in artificial lungs (ox- ygenators) undergo plasma leakage (or wetting) in which blood plasma slowly fills2 gas permeance of a plasma resistant fiber imposes the greatest constraint upon artificial lung

  2. *Corresponding author: Email: rainer.volkamer@colorado.edu; British Journal of Environment & Climate Change

    E-Print Network [OSTI]

    author: Email: rainer.volkamer@colorado.edu; British Journal of Environment & Climate Change 3 is a source for both NO2 and Ox'. NO2 production Research Article #12;British Journal of Environment & Climate Change, 3(4): .........., 2013 is highest over the city (1.35 kg hr -1 km -2 NO2), and about 30 times

  3. Mixed Ionic/Electronic Conducting Ceramic Membranes for Oxygen-Assisted CO2 Reforming

    E-Print Network [OSTI]

    Slade, David

    2010-03-29

    Incorporating a SrFeCo0.5Ox (SFC) membrane into a CO2 reforming reactor doubles methane conversion with a powder Pt/ZrO2 catalyst. The deactivation of both Pt/ZrO2 and a Pt/CeZrO2 catalyst is also retarded substantially. Catalyst performance...

  4. The Princeton Companion to Mathematics This page intentionally left blank

    E-Print Network [OSTI]

    Zeilberger, Doron

    , Oxfordshire OX20 1TW All Rights Reserved Library of Congress Cataloging-in-Publication Data The Princeton, date­ III. Leader, Imre. QA11.2.P745 2008 510--dc22 2008020450 British Library Cataloging-in-Publication Expanders 196 III.25 The Exponential and Logarithmic Functions 199 III.26 The Fast Fourier Transform 202 III

  5. Hafnium-doped tantalum oxide high-k gate dielectric films for future CMOS technology 

    E-Print Network [OSTI]

    Lu, Jiang

    2007-04-25

    A novel high-k gate dielectric material, i.e., hafnium-doped tantalum oxide (Hf-doped TaOx), has been studied for the application of the future generation metal-oxidesemiconductor field effect transistor (MOSFET). The film's electrical, chemical...

  6. arXiv:astro-ph/0607601v228Jul2006 Mon. Not. R. Astron. Soc. 000, 000000 (0000) Printed 31 July 2006 (MN LATEX style file v2.2)

    E-Print Network [OSTI]

    Gomboc, Andreja

    for publication in MNRAS ABSTRACT We present a multiwavelength study of GRB 060108 - the 100th Gamma Ray Burst galaxy. Key words: gamma-rays:bursts c 0000 RAS #12;2 Oates et al. 1 INTRODUCTION Gamma ray bursts (GRBs the burst, from the optical to the X-ray range, is best fit by a simple power law, F - , with OX = 0

  7. Why are there large differences between models in global budgets of tropospheric ozone?

    E-Print Network [OSTI]

    Wu, Shiliang

    Why are there large differences between models in global budgets of tropospheric ozone? Shiliang Wu for tropospheric ozone. The ozone production rate in the troposphere, P(Ox), varies from 2300 to 5300 Tg yrÀ1 compounds (NMVOCs, mostly biogenic isoprene), and ozone influx from stratosphere-troposphere exchange (STE

  8. Multivariate High-Frequency-Based Volatility (HEAVY) Models Diaa Noureldin

    E-Print Network [OSTI]

    Wolfe, Patrick J.

    Multivariate High-Frequency-Based Volatility (HEAVY) Models Diaa Noureldin Department of Economics.sheppard@economics.ox.ac.uk February 18, 2011 Abstract This paper introduces a new class of multivariate volatility models multivariate GARCH models. We also discuss their covariance targeting speci...cation and provide closed

  9. The 22nd International Photovoltaic Science and Engineering Conference, November 05-09, 2012, Hangzhou, China Front side degradation of silicon solar cells by rear side laser

    E-Print Network [OSTI]

    with a 10 nm-thick AlOx layer deposited by atomic layer deposition. A SiNx layer covers the ALOx layer. This includes the handling of the thin layers without breakage and metallization techniques which allow for flat thick monocrystalline layers with a resistivity of 0.5 cm. While the 290 µm thick wafers are cut out

  10. 21.7 % EFFICIENT PERC SOLAR CELLS WITH ALOX TUNNELING LAYER , J.H.Petermann1

    E-Print Network [OSTI]

    , Appelstr. 2, 30167 Hanover, Germany ABSTRACT: A plasma-assisted atomic-layer-deposited aluminum oxide (Al. Keywords: contact, passivation, solar cell 1 INTRODUCTION Atomic-layer-deposited (ALD) aluminum oxide (Al-AlOx layer in a commercial ALD reactor (FlexALTM, Oxford Instruments) at 200 °C. The deposition of Al

  11. Full paper / Mmoire Self-assembly of hybrid solids consisting of 2D supramolecular

    E-Print Network [OSTI]

    Paik Suh, Myunghyun

    .P. Suh et al., C. R. Chimie 8 (2005). © 2005 Académie des sciences. Published by Elsevier SAS. All rights-0748/$ - see front matter © 2005 Académie des sciences. Published by Elsevier SAS. All rights reserved. doi:10; accepted 11 October 2004 Available online 22 April 2005 Abstract Hybrid compounds [NaCr(ox)3]2[Ni

  12. Measuring volcanic plume and ash properties from space R. G. GRAINGER1*, D. M. PETERS1, G. E. THOMAS1,

    E-Print Network [OSTI]

    Oxford, University of

    Measuring volcanic plume and ash properties from space R. G. GRAINGER1*, D. M. PETERS1, G. E *Corresponding author (e-mail: r.grainger@physics.ox.ac.uk) Abstract: The remote sensing of volcanic ash plumes of volcanic ash. To achieve this, a singular vector decomposition method has been developed for the MIPAS

  13. Kinetics and Mechanism of Dimethyl Ether Oxidation to Formaldehyde on Supported Molybdenum Oxide Domains

    E-Print Network [OSTI]

    Iglesia, Enrique

    Kinetics and Mechanism of Dimethyl Ether Oxidation to Formaldehyde on Supported Molybdenum Oxide to formaldehyde (HCHO) on MoOx/Al2O3. The reaction intermediates and elementary steps established a redox to alkenes and oxygenates too costly for practical implementation. Oxygenates, such as formaldehyde (HCHO

  14. Atmos. Chem. Phys., 12, 11351150, 2012 www.atmos-chem-phys.net/12/1135/2012/

    E-Print Network [OSTI]

    Meskhidze, Nicholas

    , resulting in primary and secondary products, including formaldehyde and methyl glyoxal. The model predicts. Several dramatic events were observed in which isoprene and its ox- idation products were detected in longer lifetimes for species that react with OH. Ozone and PAN production is minimal in this case

  15. In Situ Polarization Modulation Infrared Reflection Absorption Spectroscopic and Kinetic Investigations of Heterogeneous Catalytic Reactions 

    E-Print Network [OSTI]

    Cai, Yun

    2010-01-14

    below the temperature previously reported. Characterizations of highly catalytically active Au films have also been carried out. Electronic and chemical properties of (1 x 1)- and (1 x 3)-Au/TiOx/Mo(112) films are investigated by PM-IRAS using CO as a...

  16. High Frequency Characteristicsof NanocompositeThin Film "Supercapacitors" and their Suitability For EmbeddedDecoupling

    E-Print Network [OSTI]

    Swaminathan, Madhavan

    the world over the past decade. Currently popular ceramic-polymer composites can only provide limited on the top of the dielectrics. Though the nanostructured carbon black epoxy composites showed high dielectric to be only up to 1OX that of the base polymer matrix. The measured dielectric constant at GHz frequencies

  17. Improving the evidence base for forestry: a stakeholder approach to

    E-Print Network [OSTI]

    of society." (A consultation on developing a new strategy for the UK, Department for Innovation Universities-relevant research priorities Gill Petrokofsky Department of Plant Sciences, University of Oxford gillian.petrokofsky@plants.ox.ac.uk. Decision-making & public opinion 7. Biofuel, energy from biomass 8. Carbon sequestration, carbon cycle 9

  18. Fast Memory-Efficient Generalized Belief Propagation

    E-Print Network [OSTI]

    Kumar, M. Pawan

    of Computing Oxford Brookes University Oxford, UK, OX33 1HX {pkmudigonda,philiptorr}@brookes.ac.uk http://cms.brookes.ac.uk that bp con- verges to stationary points of Bethe approximation of the free energy. They also proposed. Vogiatzis et al. [7] suggest a coarse-to-fine strategy for bp by grouping together similar labels. However

  19. [The Journal of Geology, 2001, volume 109, p. 143153] 2001 by The University of Chicago. All rights reserved. 0022-1376/2001/10902-0001$01.00 The Hindu Kush Seismic Zone as a Paradigm for the Creation of

    E-Print Network [OSTI]

    Hacker, Bradley R.

    . Hacker,1 and Roger Bilham Department of Earth Sciences, Oxford University, Parks Road, Oxford OX1 3PR 1995b; Hacker et al. 1995). Ultra- high-pressure terrains are typically composed of mainly continental; Hacker et al. 2000). Temperatures of eclogites during UHP metamor- phism, assessed mostly via Fe

  20. Neurobiology of Disease Neuroinflammation Alters the Hippocampal Pattern of

    E-Print Network [OSTI]

    Wenk, Gary

    chronically infused with lipopolysaccharide (LPS) (0.25 g/h) into the fourth ventricle for 28 d. On day 29 and CA3 regions of LPS-infused rats, Arc and OX-6 (specific for major histocompatibility complex class II immunoreactivity) and elevated exploration-induced Arc expression compared with control-infused rats. In contrast

  1. Monatshefte fur Chemie (Chemical Monthly) 125: 167188 (1994) Fast Folding and Comparison of RNA

    E-Print Network [OSTI]

    Stadler, Peter F.

    1994-01-01

    Monatshefte f¨ur Chemie (Chemical Monthly) 125: 167­188 (1994) Fast Folding and Comparison of RNA¨ur Theoretische Chemie der Universit¨at Wien A­1090 Wien, Austria b Institut f¨ur Molekulare Biotechnologie D of Oxford South Parks Road, Oxford OX1 3PS, UK \\Lambda Mailing Address: Institut f¨ur Theoretische Chemie

  2. H Zhu, Validating Algebraic Class Testing in Final Algebra January 16, 2002 Validating Algebraic Class Testing in Final Algebra

    E-Print Network [OSTI]

    Zhu, Hong

    H Zhu, Validating Algebraic Class Testing in Final Algebra January 16, 2002 1 Validating Algebraic Class Testing in Final Algebra Hong Zhu Department of Computing, Oxford Brookes University Wheatley Campus, Oxford OX33 1HX, UK, Email: hzhu@brookes.ac.uk Abstract Algebraic class testing is an object

  3. FREE ACTIVITIES UNIVERSITY OF OXFORD MUSEUMS & COLLECTIONS

    E-Print Network [OSTI]

    Wallace, Mark

    ,Sun and Bank Hols 11am­4pm FREE ENTRY FOR CHILDREN FREE ENTRY FREE ENTRY FOR CHILDREN PITT RIVERS MUSEUM PITT.mhs.ox.ac.uk 01865 277280 OPEN Tuesday ­ Sunday 12 ­ 5pm FREE ENTRY FREE ENTRY FREE ENTRY FREE ENTRY Brilliant bugs for all · 10am-4pm Subject to availability Available from Information Point Every Sunday FAMILY FRIENDLY

  4. Peter Journey-Kilarney Photoaction Current Spectra of Polymer Solar Cells

    E-Print Network [OSTI]

    Carter, Sue

    that for TiOx the blending of the polymers enhances solar cell EQE. However, when TiO2 is used blend EQE fuels into electricity, this system has several major drawbacks. Centrally, fossil fuels are non, solar, wind, geothermal and hydroelectric are the most likely

  5. ECE 103 Solid State Electronics Master Exam 2012 Assume silicon, room temperature, complete ionization.

    E-Print Network [OSTI]

    Wang, Deli

    ECE 103 Solid State Electronics Master Exam 2012 Assume silicon, room temperature, complete ionization. (q=1.6×10-19 C, ox=3.9×8.85×10-14 F/cm, si=11.7×8.85×10-14 F/cm, kT/q=0.0259 V, Eg=1.12 e

  6. Constrained sintering of an air-plasma-sprayed thermal barrier coating A.C.F. Cocks a,*, N.A. Fleck b

    E-Print Network [OSTI]

    Fleck, Norman A.

    b a Department of Engineering Science, Parks Rd., Oxford OX1 3PJ, UK b Cambridge University Engineering Department, Trumpington St., Cambridge CB2 1PZ, UK Received 5 October 2009; received in revised of the zirconia. Recently, Fleck and Cocks [5] have developed a sintering model for APS material. They assumed

  7. Producing global maps of aircraft-induced cirrus via

    E-Print Network [OSTI]

    Oxford, University of

    Indian Institute of Technology, Kanpur, India * tahir@atm.ox.ac.uk Introduction We aim to quantify cirrus) are available from ECMWF ERA40 data sets. - Flight paths and fuel emission information can be found from aircraft inventories: TRADEOFF (see below) and AERO2k [Eyers et al., 2004]. Figure 1: Distance and fuel

  8. The TELRI tool catalogue: structure and prospects Tomaz Erjavec

    E-Print Network [OSTI]

    catalogues on the Web are the CTI's Guide to Digital Resources (http://info.ox.ac.uk/ctitext/resguide/) which of a tool catalogue and repository. The idea is similar to that of the ACL Natural Language Soft- ware The "Trans-European Language Resources In- frastructure", TELRI (http://www.telri.de/), is a pan

  9. Mixed-Conducting Oxygen Permeable Ceramic Membrane and its Application in the Production of Synthesis Gas

    E-Print Network [OSTI]

    Jiang, Qiying

    2010-04-28

    This study detailedly investigated the effects of the preparation parameters on the performance of Ba0.5Sr0.5Co0.8Fe0.2Ox (BSCF) membranes. In addition, the dominant step of the oxygen permeation through the BSCF membrane was determined. The results...

  10. Enhanced Sintering of Yttrium-Doped Barium Zirconate by Addition of ZnO

    E-Print Network [OSTI]

    Haile, Sossina M.

    þ CeO2 (1) This reactivity causes severe degradation of the electrolyte and precludes applications properties of doped barium zirconate have been examined. With the use of zinc ox- ide as a sintering aid, BaZr of the alkaline earth perovskite family,15,17 it has been more recently recognized that doped BaZrO3, in fact

  11. Zirconium-doped tantalum oxide high-k gate dielectric films 

    E-Print Network [OSTI]

    Tewg, Jun-Yen

    2005-02-17

    ) is unacceptable for many practical reasons. By replacing the SiO2 layer with a high dielectric constant material (high-k), many of the problems can be solved. In this study, a novel high-k dielectric thin film, i.e., TaOx doped with Zr, was deposited and studied...

  12. Green-Functions for Surface Physics 

    E-Print Network [OSTI]

    Allen, Roland E.

    1979-01-01

    oomLCer rotating fiats, eaoh of magnitude Hl, one rebating in hhe same Circe%, on as hho precession of& anvL one in the opposites Liireabion, The Cozgue, oQ P . Line to ths. roCstlng oom+oxLont in hhe cP~3@osi'te 6ireohlon has 8, hime average...

  13. FDR3 --A Modern Refinement Checker for CSP Thomas Gibson-Robinson, Philip Armstrong,

    E-Print Network [OSTI]

    Oxford, University of

    FDR3 -- A Modern Refinement Checker for CSP Thomas Gibson-Robinson, Philip Armstrong, Alexandre.roscoe}@cs.ox.ac.uk Abstract. FDR3 is a complete rewrite of the CSP refinement checker FDR2, incorporating a significant number describe the new algorithm that FDR3 uses to construct its internal representation of CSP processes

  14. FDR3 --A Modern Refinement Checker for CSP Thomas Gibson-Robinson, Philip Armstrong,

    E-Print Network [OSTI]

    Oxford, University of

    FDR3 -- A Modern Refinement Checker for CSP Thomas Gibson-Robinson, Philip Armstrong, Alexandre.roscoe}@cs.ox.ac.uk Abstract. FDR3 is a complete rewrite of the CSP refinement checker FDR2, incorporating a significant number describe the new algorithm that FDR3 uses to construct its in- ternal representation of CSP processes

  15. CSP is expressive enough for A.W. Roscoe

    E-Print Network [OSTI]

    Oxford, University of

    CSP is expressive enough for A.W. Roscoe Oxford University Computing Laboratory {Bill.Roscoe@comlab.ox.ac.uk} Abstract. Recent results show that Hoare's CSP, augmented by one additional operator, can express every operator whose operational semantics are expressible in a new notation and are therefore "CSP

  16. Synthesis and characterization of CrN/Mo2N multilayers and phases of Molybdenum nitride

    E-Print Network [OSTI]

    Marks, Laurence D.

    ; Nanolayers; Tool coatings 1. Introduction Hard coatings for cutting tools have been in use now for thirty for dry machining [7­10]. If tools (coatings) can effectively tolerate high temperatures or can helpOx and CrN/Mo2N multilayer films were deposited by reactive sputtering. Characterization of the coatings

  17. Experimental evidence for the interacting effects of forest edge, moisture and soil macrofauna on leaf litter decomposition

    E-Print Network [OSTI]

    Malhi, Yadvinder

    , Oxford OX2 7DE, UK d Centre for Ecology and Hydrology, Maclean Building, Crowmarsh Gifford, Wallingford radiation and wind at forest edges reduces soil moisture, which in turn affects leaf litter decomposition 12% today, and 75% of the patches are now less than 2 ha (Watts, 2006). Such small forests

  18. Procedia Computer Science 00 (2010) 18 Procedia Computer

    E-Print Network [OSTI]

    Brodlie, Ken

    2010-01-01

    School of Computing, University of Leeds, Leeds LS2 9JT, UK bNAG Ltd, Wilkinson House, Jordan Hill Road, Oxford OX2 7 paper begins with a historical review. Visualization systems have evolved in parallel with general approaches to visualization Corresponding author Email addresses: jason@comp.leeds.ac.uk (Jason Wood

  19. Advances in Quantitative Verification for Ubiquitous Computing

    E-Print Network [OSTI]

    Oxford, University of

    Advances in Quantitative Verification for Ubiquitous Computing Marta Kwiatkowska Department of Computer Science, University of Oxford, Oxford, OX1 3QD Abstract. Ubiquitous computing, where computers and correcting flaws in a number of ubiquitous computing applications. In this paper, we focus on three key

  20. Collaborative Sensing by Unmanned Aerial Vehicles W. T. Luke Teacy, Jing Nie,

    E-Print Network [OSTI]

    Martin, Ralph R.

    Collaborative Sensing by Unmanned Aerial Vehicles W. T. Luke Teacy, Jing Nie, Sally Mc.trigoni,stephen.cameron}@comlab.ox.ac.uk ABSTRACT In many military and civilian applications, Unmanned Aerial Vehicles (UAVs) provide, advances in airframe design and con- trol technology mean that using Unmanned Aerial Vehicles (UAVs

  1. Kheshbn No. 114- Fall 1989 - Journal

    E-Print Network [OSTI]

    1989-01-01

    T 13X2 0371 pX D112X ,T73 inOX ,p*71X? 3 *7Xm ,U7t3ni37*7X73par»» p-»» ps pay-ra« px /inox — jRttuwa vwx» — 'Varn pana

  2. [1987] On complete ideals in regular local rings.pdf

    E-Print Network [OSTI]

    m 6 X, m"I,., is the completion (InOX,,)"; and then we set. 1:1,. Let us check that this I is as asserted in (2.3). 5X = Proj S, where S is the graded a-algebra @100 ...

  3. Air Dominance in Sensor Networks: Guarding Sensor Motes using Selective Interference

    E-Print Network [OSTI]

    Lenders, Vincent

    Wilhelm, Ivan Martinovic, Jens B. Schmitt, and Vincent Lenders Abstract--Securing wireless sensor networks.martinovic@cs.ox.ac.uk Vincent Lenders is with armasuisse Science and Technology, armasuisse, 3602 Thun, Switzerland. E-mail: vincent.lenders@armasuisse.ch security services for frame protection, device authorization, key

  4. BIOMASS BURNING IN THE AMAZON: LINKS BETWEEN BURNING, SCIAMACHY TRACE GASES, AND AEROSOL AND SURFACE PROPERTIES FROM THE ORAC-AATSR RETRIEVAL

    E-Print Network [OSTI]

    Oxford, University of

    BIOMASS BURNING IN THE AMAZON: LINKS BETWEEN BURNING, SCIAMACHY TRACE GASES, AND AEROSOL@atm.ox.ac.uk AEROSOL AND GAS PROPERTIESSEASONALITY OF BURNING Biomass burning in the Amazon shows strong seasonal in aerosol optical depth (AOD) and effective radius, linked to biomass burning through detected fires. Use

  5. COMBINATORICS IN PURE MATHEMATICS Laszlo Lovasz

    E-Print Network [OSTI]

    Ziegler, Günter M.

    of Sciences Budapest, Hungary H-1053 Dominic J. A. Welsh Merton College Oxford OX1 4JD, United Kingdom G of a matrix. This Handbook contains several chapters showing how algebra, topology, probability theory etc of the ring and to prove fundamental algebraic properties of some classical projective varieties. Section 6

  6. 10.1101/gr.2227704Access the most recent version at doi: 2004 14: 1014-1024Genome Res.

    E-Print Network [OSTI]

    Schnaufer, Achim

    School of Pathology, University of Oxford, Oxford, OX1 3RE, United Kingdom; 2 School of Biological Sciences, University of Manchester, Manchester, M13 9PT, United Kingdom Most eukaryotic genomes contain, but remain largely absent from genome projects because of difficulties in cloning and sequence assembly

  7. 140853-2015-EN Member states -Supply contract -Prior Information Notice -Not applicable 1/2

    E-Print Network [OSTI]

    Crowther, Paul

    website: http://ted.europa.eu/udl?uri=TED:NOTICE:140853-2015:TEXT:EN:HTML United Kingdom-Didcot: Nuclear Procurement For the attention of: Sue Blake/Alison Roblin OX11 0DE Didcot UNITED KINGDOM Telephone: +44 Union funds The contract is related to a project and/or programme financed by European Union funds

  8. In situ reduction and oxidation of nickel from solid oxide fuel cells in a Titan ETEM

    E-Print Network [OSTI]

    Dunin-Borkowski, Rafal E.

    In situ reduction and oxidation of nickel from solid oxide fuel cells in a Titan ETEM A. Faes1. C. Singhal, K. Kendall, High Temperature Solid Oxide Fuel Cell - Fundamentals, Design, Denmark antonin.faes@epfl.ch Keywords: In situ ETEM, nickel oxide, reduction, RedOx, SOFC Solid Oxide Fuel

  9. BIOLOGY OF REPRODUCTION 72, 805813 (2005) Published online before print 1 December 2004.

    E-Print Network [OSTI]

    2005-01-01

    10.1095/biolreprod.104.036053 Alkylated Imino Sugars, Reversible Male Infertility-Inducing Agents, Do Not Affect the Genetic Integrity of Male Mouse Germ Cells During Short-Term Treatment Despite Induction of Biochemistry, University of Oxford, Oxford OX1 3QU, United Kingdom ABSTRACT Reversible infertility can

  10. Arsenic augments the uptake of oxidized LDL by upregulating the expression of lectin-like oxidized LDL receptor in mouse aortic endothelial cells

    SciTech Connect (OSTI)

    Hossain, Ekhtear; Ota, Akinobu; Karnan, Sivasundaram; Damdindorj, Lkhagvasuren; Takahashi, Miyuki; Konishi, Yuko; Konishi, Hiroyuki; Hosokawa, Yoshitaka

    2013-12-15

    Although chronic arsenic exposure is a well-known risk factor for cardiovascular diseases, including atherosclerosis, the molecular mechanism underlying arsenic-induced atherosclerosis remains obscure. Therefore, this study aimed to elucidate this molecular mechanism. We examined changes in the mRNA level of the lectin-like oxidized LDL (oxLDL) receptor (LOX-1) in a mouse aortic endothelial cell line, END-D, after sodium arsenite (SA) treatment. SA treatment significantly upregulated LOX-1 mRNA expression; this finding was also verified at the protein expression level. Flow cytometry and fluorescence microscopy analyses showed that the cellular uptake of fluorescence (Dil)-labeled oxLDL was significantly augmented with SA treatment. In addition, an anti-LOX-1 antibody completely abrogated the augmented uptake of Dil-oxLDL. We observed that SA increased the levels of the phosphorylated forms of nuclear factor of kappa light polypeptide gene enhancer in B cells (NF-?B)/p65. SA-induced upregulation of LOX-1 protein expression was clearly prevented by treatment with an antioxidant, N-acetylcysteine (NAC), or an NF-?B inhibitor, caffeic acid phenethylester (CAPE). Furthermore, SA-augmented uptake of Dil-oxLDL was also prevented by treatment with NAC or CAPE. Taken together, our results indicate that arsenic upregulates LOX-1 expression through the reactive oxygen species-mediated NF-?B signaling pathway, followed by augmented cellular oxLDL uptake, thus highlighting a critical role of the aberrant LOX-1 signaling pathway in the pathogenesis of arsenic-induced atherosclerosis. - Highlights: • Sodium arsenite (SA) increases LOX-1 expression in mouse aortic endothelial cells. • SA enhances cellular uptake of oxidized LDL in dose-dependent manner. • SA-induced ROS generation enhances phosphorylation of NF-?B. • SA upregulates LOX-1 expression through ROS-activated NF-?B signaling pathway.

  11. Hierarchical Heterogeneity at the CeO x –TiO 2 Interface: Electronic and Geometric Structural Influence on the Photocatalytic Activity of Oxide on Oxide Nanostructures

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

    Luo, Si; Nguyen-Phan, Thuy-Duong; Johnston-Peck, Aaron C.; Barrio, Laura; Sallis, Shawn; Arena, Dario A.; Kundu, Shankhamala; Xu, Wenqian; Piper, Louis F. J.; Stach, Eric A.; et al

    2015-01-13

    Mixed oxide interfaces are critical for delivering active components of demanding catalytic processes such as the photo-catalytic splitting of water. We have studied CeOxTiO? catalysts with low ceria loadings of 1 wt%, 3 wt% and 6 wt% that were prepared with wet impregnation methods to favor a strong interaction between CeOx and TiO?. In these materials the interfaces between CeOx-TiO? have been sequentially loaded (1%, 3% and 6%), with and without Pt (0.5 wt%). The structure and properties of the catalysts were characterized using several X-ray and electron based techniques including XRD, XPS, UPS, NEXAFS, UV-Vis and HR-STEM/STEM-EELS, to unravelmore »the local morphology, bulk structure, surface states and electronic structure. The combination of all these techniques allow us to analyze in a systematic way the complete structural and electronic properties that prevail at the CeOx-TiO? interface. Fluorite structured nano crystallites of ceria on anatase-structured titania were identified by both XRD and NEXAFS. A sequential increasing of the CeOx loading led to the formation of clusters, then plates and finally nano particles in a hierarchical manner on the TiO? support. The electronic structures of these catalysts indicate that the interaction between TiO? and CeO? is closely related to the local morphology of nanostructured CeO?. Ce³? cations were detected at the surface of CeO? and at the interface of the two oxides. In addition, the titania is perturbed by the interaction with ceria and also with Pt. The photocatalytic activity for the splitting of H?O using UV light was measured for these materials and correlated with our understanding of the electronic and structural properties. Optimal catalytic performance and photo response results were found for the 1 wt% CeOx-TiO? catalyst where low dimensional geometry of the ceria provided ideal electronic and geometrical properties. The structural and electronic properties of the interface were critical for the photocatalytic performance of this mixed-oxide nanocatalyst system.« less

  12. Farm and home television viewing habits and preferences of Caldwell County residents in 1955 

    E-Print Network [OSTI]

    Sloan, Jack Thomas

    1956-01-01

    . 8. $'~&i88 ~QyQX Mug 6aQ QS' @Q~ ~INSI WQeMg &8 "QQm m8 CIQVnWg" yxegXW:84 X8885 Que8 8 ~tsh s s s e s sac e e +a e as s ee a e ass s es s s sac ee s so ass L6 ye ~pm aak~S Qf X'QSPQeRQnt8 QMXQut3. g VI. QW~ +k, QSRK IMLC GQ'QEKCX"P 'PPQgP@B s e e... @585 VQGQQ p2824C' %848~@ XIQNS QQ~vN 'ygQQ prig&'g Q~A'1 ~ ~g@Qp ~ 4~gQ y Qpg ~AQ QA CRL@ @6~ Q ~8 Qf R53MQh9MS ~+~ ~~+~ pi~~~CQQS 5Z WQ 8@'5 Kk~p . -'P : C ' Gap C~~~CGP &QN, 28~ e~~, fyg . 44~%~@, KmN@6n, WQN Q. 0. . 'g ~ %eke RID Q. , SK5...

  13. Certain aspects of shear stresses in tapered cantilever beams as revealed through photoelasticity 

    E-Print Network [OSTI]

    Perry, John Vivian

    1954-01-01

    ~p~ + Yg JpJg)6 +P) + Ah o ~~gg~r~o ~ooy Cm) 8 Smaze FZFwrZnr7 dpcvpnp or ~ ~wSF/C' ~ooy cohFgws peur s g 8A'/sr g QT pp' oA' g+~ p' &g/s o+ &h4 I gP I 6'+o4 DEFdk'AWE' THF pdw7$ ISSPhtd AS/TAWS Jf 7 0/ A Q AAfo c' +Fsp~7/k wc y~ o ' APE/wc& r...-?-~~~) P' s p/vg ~ ( Op -~Pp) r ore mum's ZnW~rz srWArM i 4d& &WC+ g~ %jag p a( ( ) 8$ rNb w 7+F cpn/pg Fr gA' r1 y Eg 4rgTlp A/ = ~ L~ ? e(c ~ -?~~) ~ ?, (g mc?)7 rr 8 w~ ~I 9p 8p L~g 2 p~& p Hl/w~j ~& 3 ('~ ~~)~ 8 (' ~~) / ) 8g + dr PF4Fn...

  14. Final Technical Report

    SciTech Connect (OSTI)

    Logan, Jesse, L; Witmer, Dennis, PhD

    2012-07-29

    The overall goal of this project was to design, evaluate, and engineer a Vanadium Red-Ox Flow Battery's integration into an existing wind site and micro-grid environment to determine if it is possible to achieve a fifteen percent reduction of diesel fuel usage during periods of peak load and otherwise stabilize the grid in potential high wind penetration systems. The bulk of the work was done by modeling the existing hybrid wind-diesel system and the proposed system with added flow battery storage. The flow battery was changed from a Vanadium Red-Ox to a Zinc Bromine flow battery by a different manufacturer during the modeling process. Several complications arose, but modeling proved to be successful and is ongoing. The development of a modeling platform for flow battery energy storage is a key element in evaluating both economic benefits and dispatch strategies for high penetration in micro-grid wind-diesel systems.

  15. GENETIC MODIFICATION OF GIBBERELLIC ACID SIGNALING TO PROMOTE CARBON SEQUESTRATION IN TREE ROOTS AND STEMS

    SciTech Connect (OSTI)

    Busov, Victor

    2013-03-05

    Semidwarfism has been used extensively in row crops and horticulture to promote yield, reduce lodging, and improve harvest index, and it might have similar benefits for trees for short-rotation forestry or energy plantations, reclamation, phytoremediation, or other applications. We studied the effects of the dominant semidwarfism transgenes GA Insensitive (GAI) and Repressor of GAI-Like, which affect gibberellin (GA) action, and the GA catabolic gene, GA 2-oxidase, in nursery beds and in 2-year-old high-density stands of hybrid poplar (Populus tremula ? Populus alba). Twenty-nine traits were analyzed, including measures of growth, morphology, and physiology. Endogenous GA levels were modified in most transgenic events; GA(20) and GA(8), in particular, had strong inverse associations with tree height. Nearly all measured traits varied significantly among genotypes, and several traits interacted with planting density, including aboveground biomass, root-shoot ratio, root fraction, branch angle, and crown depth. Semidwarfism promoted biomass allocation to roots over shoots and substantially increased rooting efficiency with most genes tested. The increased root proportion and increased leaf chlorophyll levels were associated with changes in leaf carbon isotope discrimination, indicating altered water use efficiency. Semidwarf trees had dramatically reduced growth when in direct competition with wild-type trees, supporting the hypothesis that semidwarfism genes could be effective tools to mitigate the spread of exotic, hybrid, and transgenic plants in wild and feral populations. We modified gibberellin (GA) metabolism and signaling in transgenic poplars using dominant transgenes and studied their effects for 3 years under field conditions. The transgenes that we employed either reduced the bioactive GAs, or attenuated their signaling. The majority of transgenic trees had significant and in many cases dramatic changes in height, crown architecture, foliage morphology, flowering onset, floral structure, and vegetative phenology. Most transgenes elicited various levels of height reduction consistent with the roles of GA in elongation growth. Several other growth traits were proportionally reduced, including branch length, internode distance, and leaf length. In contrast to elongation growth, stem diameter growth was much less affected, suggesting that semi-dwarf trees in dense stands might provide high levels of biomass production and carbon sequestration. The severity of phenotypic effects was strongly correlated with transgene expression among independent transgenic events, but often in a non-linear manner, the form of which varied widely among constructs. The majority of semi-dwarfed, transgenic plants showed delayed bud flush and early bud set, and expression of a native GAI transgene accelerated first time flowering in the field. All of the phenotypic changes observed in multiple years were stable over the 3 years of field study. Our results suggest that transgenic modification of GA action may be useful for producing semi-dwarf trees with modified growth and morphology for horticulture and other uses. We studied the poplar C(19) gibberellin 2-oxidase (GA2ox) gene subfamily. We show that a set of paralogous gene pairs differentially regulate shoot and root development. ? PtGA2ox4 and its paralogous gene PtGA2ox5 are primarily expressed in aerial organs, and overexpression of PtGA2ox5 produced a strong dwarfing phenotype characteristic of GA deficiency. Suppression of PtGA2ox4 and PtGA2ox5 led to increased biomass growth, but had no effect on root development. By contrast, the PtGA2ox2 and PtGA2ox7 paralogous pair was predominantly expressed in roots, and when these two genes were RNAi-suppressed it led to a decrease of root biomass. ? The morphological changes in the transgenic plants were underpinned by tissue-specific increases in bioactive GAs that corresponded to the predominant native expression of the targeted paralogous gene pair. Although RNAi suppression of both paralogous pairs led to changes in wood developmen

  16. A study of the field of values of a matrix 

    E-Print Network [OSTI]

    Chynoweth, Linda

    1977-01-01

    axis 2 2 Proof. Note that F(B) = (a(x [ + ox x I I 2 ?, - a and semi- 2& o~x [ j ]xf = 1) Let x = r e ' and x I I 2 2 X(r , y) = a(x ( + o x x I I I 2 = r e ' where r ' 2 I 2 n)x[ ar2+or 2 I + r ' = 1 . Then 2 (1-r ') e I I 2 -o(l-r... ) where y = e - e . Consider X(r, y) for all y , say I 2 I 2 Cr . This Cr is a circle with center o&(2r - 1) and radius )o( r(1-r )I~ . Pick r so that C is the circle with maximum I r I radius. Ttiis occurs when r = ? . To find the maximum radius of I...

  17. Synthesis of Proteins with Homogenous Chemical and Posttranslational Modifications 

    E-Print Network [OSTI]

    Wu, Bo

    2014-06-19

    of 1,4 - di ox ane was added as t he ref eren ce s t andard (67.19 ppm for 1 3 C ) for ca rbon NM R s pect ra i n deut eri um ox i de , and a m i ni m al am ount of s odi um h ydrox i de pel l et was ad ded t o t he NM R s am pl e t o ai d i n... perat ur e for 30 m i n. The m i x t ure was t hen co ol ed i n an i ce ba t h, and s odi um boroh yd ri de (0.75 g, 19.8 m m ol ) was added port i o nwi s e. The m i x t ure was t hen s t i rred at room t em perat ur e overni ght , and w at er (10...

  18. Outfits - Company C - 4 

    E-Print Network [OSTI]

    Unknown

    2006-01-01

    salt (BEDT-TTF)4(H2O) Fe(C2O4)3?C6H5CN.................................................6 4 X-ray crystal structure of the molecular-metal ferromagnet (BEDT-TTF)3[MnCr(ox)3]?CH2Cl2..????????..??7 5 X-ray crystal structure...[Cr(C2O4)3]2}??????.??????????...19 xi FIGURE Page 16 Schematic drawing of the organocyanide acceptor HAT-(CN)6...

  19. Effects of burning on diet quality and associated production systems of cattle and goats in Acacia savannahs of Kenya 

    E-Print Network [OSTI]

    Mbui, Moses Kiruki

    1985-01-01

    . . . . . . . . . , . . . . . . . . . . . . . . . . 19 3 The study paddocks of pasture 2, showing vegetation sampling lines and treatment paddocks designated burn and unburn. . . . 20 4 Long term mean monthly rainfall for Makindu Meteorological Station and the monthly rainfall at Sheep and Goat... / oX / qO / / / / / / / Ol IA O a. 3. 2 I I I 3. 3 Fig. 3. The study paddocks of pasture 2, showing vegetation sampling. lines and treatment paddocks designated burn and unburn. 21 the periphery of NRRS, Kiboko, are the weather...

  20. The Establishment of Several Range Grasses Seeded in Burned and Unburned Slash of Ashe Junipe: (Juniperus Ashei Buchholz) 

    E-Print Network [OSTI]

    Bonnett, Norman Neal

    1960-01-01

    requirements fox' thi dejxee ef = ' MASTER OP SCXENCE Vmy, 1960 FJa)ox SubJect: RANGE MANAGRMINY THE ESTABLISHMENT OP SEVERAL RANGE GRASSES SEEDED XN BURNED AND UNBURNED SLASH OP ASHE JUNXPER (JUNIPERUS ASHEI BUCHHOLZ) NORMAN NEAL BONNETT Ajpproved aa... that fire prevented a rapid re- growth of Ashe )uniper. Naldrip (1984) also pointed out that burning the cedar slash greatly reduced the rate of cedar reinfestation (Figure 3). Four years following treatment in his experiments there were 447 cedar seed...

  1. Features in the primordial power spectrum? A frequentist analysis This article has been downloaded from IOPscience. Please scroll down to see the full text article.

    E-Print Network [OSTI]

    Souradeep, Tarun

    Road, Oxford, OX1 3NP, U.K. dIUCAA, Post Bag 4, Ganeshkhind, Pune 411 007, India E-mail: hamann to rigorous statistical testing, our results suggest that WMAP data are consistent with the assumption hypothesis 3 2.2 Statistic 3 2.3 Numerical implementation 3 3 Results 4 3.1 Real data 4 3.2 Simulated data 5

  2. Optomechanical conversion by mechanical turbines

    E-Print Network [OSTI]

    Kneževi?, Miloš; Warner, Mark

    2014-10-30

    has mov- ing parts gives it a disadvantage over conventional photo- voltaics, though rubber is highly durable and tough — for instance car tyres survive long use in harsh, abra- sive conditions. Another difficulty, that could perhaps be solved... ’effect du frottement dans l’equilibre,” Mem. Acad. Sci. , pp. 265 (1762). 7[14] L. R. G. Treloar, The Physics of Rubber Elasticity (Ox- ford University Press, Oxford, 2005). [15] M. Knez?evic´ and M. Warner, “Photoferroelectric solar to electrical conversion...

  3. Syntactic Features and Word Similarity for Supervised Metonymy Malvina Nissim

    E-Print Network [OSTI]

    Markert, Katja

    ).2 In (2), "Pakistan", the name of a location, refers to one of its national sports teams.3 (2) Pakistan://info.ox.ac.uk/bnc). #12;Scotland subj-of subj-of win lose context reduction Pakistan Scotland-subj-of-losePakistan-subj-of-win similarity semantic class head similarity role similarity Pakistan had won the World Cup lost in the semi

  4. 8 September Participants

    E-Print Network [OSTI]

    Crawley-Boevey, William

    Chesne (F) Duesseldorf chesne@uni­duesseldorf.de Anton Cox (UK) London A.G.Cox@city.ac.uk Steve Doty (US des@maths.ed.ac.uk James Shepherd (UK) Bristol james.shepherd@bris.ac.uk M. D. Staic (R) Bucharest. Erdmann, Oxford. erdmann@maths.ox.ac.uk , W. Crawley­Boevey, Leeds. w.crawley­boevey@leeds.ac.uk , C. Geiß

  5. Received 24 Oct 2014 | Accepted 16 Apr 2015 | Published 21 May 2015 Microscopic dynamics of synchronization

    E-Print Network [OSTI]

    Straube, Arthur V.

    of synchronization in driven colloids Michael P.N. Juniper1, Arthur V. Straube2, Rut Besseling3, Dirk G.A.L. Aarts1 for materials should be addressed to R.P.A.D. (email: roel.dullens@chem.ox.ac.uk). NATURE COMMUNICATIONS | 6. All rights reserved. #12;I n the natural world, little exists in a state of true equilibrium; in fact

  6. Biochem. J. (2013) 455, 107118 (Printed in Great Britain) doi:10.1042/BJ20130126 SUPPLEMENTARY ONLINE DATA

    E-Print Network [OSTI]

    Nizet, Victor

    2013-01-01

    stated below branches). For accession numbers, see Table S3. 1 To whom correspondence should be addressed, University of Oxford, Oxford OX1 3TA, U.K. 4 Present address: Waters Corporation, 34 Maple Street, Milford Top10 Invitrogen N/A BL21 pLysS Invitrogen N/A GAS (serotype) NZ131 (M49) ASM1812v1 ACI61688 3487

  7. JOURNAL OF GEOPHYSICAL RESEARCH, VOL. ???, XXXX, DOI:10.1029/, Quantifying irreversible mixing during baroclinic

    E-Print Network [OSTI]

    Peltier, W. Richard

    diffusivity Y. H. Yamazaki Atmospheric, Oceanic and Planetary Physics, University of Oxford, UK W. R. Peltier@atm.ox.ac.uk) W. R. Peltier, Department of Physics, University of Toronto, 60 St George Street, Toronto, Ontario, M5S 1A7, CANADA (peltier@atmosp.utoronto.ca) D R A F T January 14, 2004, 1:27pm D R A F T #12;X - 2

  8. Antibody landscapes after influenza virus infection or vaccination

    E-Print Network [OSTI]

    Fonville, J. M.; Wilks, S. H.; James, S. L.; Fox, A.; Ventresca, M.; Aban, M.; Xue, L.; Jones, T. C.; Le, N. M. H.; Pham, Q. T.; Tran, N. D.; Wong, Y.; Mosterin, A.; Katzelnick, L. C.; Labonte, D.; Le, T. T.; van der Net, G.; Skepner, E.; Russell, C. A.; Kaplan, T. D.; Rimmelzwaan, G. F.; Masurel, N.; de Jong, J. C.; Palache, A.; Beyer, W. E. P.; Le, Q. M.; Nguyen, T. H.; Wertheim, H. F. L.; Hurt, A. C.; Osterhaus, A. D. M. E.; Barr, I. G.; Fouchier, R. A. M.; Horby, P. W.; Smith, D. J.

    2014-11-21

    for Infection and Immunity, Melbourne VIC 3000, Australia. 18 6National Institute of Hygiene and Epidemiology, Hanoi, Vietnam. 19 7Oxford University Museum of Natural History, Oxford OX1 3PW, UK. 20 8Insect Biomechanics Group, Department of Zoology... *Correspondence to: dsmith@zoo.cam.ac.uk. 31 ‡ These authors contributed equally to this work. 32 †Professor Masurel is deceased 33 ? Current address: School of Industrial Engineering, Purdue University, West Lafayette, IN 47907 34 USA. 35 36 2 Abstract...

  9. Corso di Laurea in Ingegneria Meccanica Anno Accademico 2012/2013

    E-Print Network [OSTI]

    Demeio, Lucio

    O(x, y, z) indicato in figura (con l'asse z perpendicolare al piano della figura) e determinare le asse x (vedi figura), mentre l'asta ha l'estremo A saldato su un punto del disco a distanza d dal proiezione ortogonale D sull'asse x. x d y A C D R,M B O l,m Calcolare le configurazioni di equilibrio e

  10. Nutrient digestion in various segments of the gastrointestinal tract of ponies fed two, three or four meals per day 

    E-Print Network [OSTI]

    Brown, Kimberly Massey

    1987-01-01

    and postileal absorption of magnesium was 28. 5, 28. 8 and O. OX, respectively. ACKNQWLEDGEMENTS The author will always be grateful for having had the opportunity to work under the guidance of Dr. G. D. Potter, committee chairman. His expertise in equine... Absorption of Phosphorus Apparent Postileal Absorption of Phosphorus Apparent Absorption of Magnesium Apparent Total Tract Absorption of Magnesium Apparent Prececal Absorption of Magnesium Apparent Postileal Absorption of Magnesium 43 44 45 45 47...

  11. Catalytic Chemistry DOI: 10.1002/anie.200700593

    E-Print Network [OSTI]

    Iglesia, Enrique

    that the presence of TiO2 as a colloidal suspension during precipitation of Mo­V­Nb oxides leads to markedly higher of a colloidal suspension of pre- formed TiO2 (24% Mo0.61V0.31Nb0.08Ox/TiO2) gave ethene oxidation rates. Their high stability allowed their use as catalysts at relatively high temperatures (560 K), which led

  12. Atmos. Chem. Phys., 6, 23552366, 2006 www.atmos-chem-phys.net/6/2355/2006/

    E-Print Network [OSTI]

    Meskhidze, Nicholas

    reservoir molecules to photochemically active species and of the subsequent reformation of the reservoir.dufour@lmd.polytechnique.fr) by heterogeneous reactions into active chlorine molecules (ClOx=ClO+2Cl2O2+2Cl2) that drive catalytic ozone de. The reformation of HCl via the reaction of Cl and CH4 is slower than the for- mation of ClONO2. The strong

  13. 2.2.29. Demostrar que nx((n) -(n))2 Solucion: Para el resto de la prueba, p y q representan siempre un

    E-Print Network [OSTI]

    Cilleruelo, Javier

    2.2.29. Demostrar que nx((n) - (n))2 = O(x). Soluci´on: Para el resto de la prueba, p y q (n) = p|n 1, por tanto lo que queremos estimar es: nx ((n) - (n))2 = nx ( p|n 2 1)2 . Donde es un cantidad elevada al cuadrado, podemos poner eso como nx ((n) - (n))2 = nx ( p|n 2 1)( q|n 2 1). Reordenando

  14. Low gap amorphous GaN1-xAsx alloys grown on glass substrate K. M. Yu,1,a

    E-Print Network [OSTI]

    Wu, Junqiao

    absorption coefficient of 105 cm-1 for the amorphous GaN1-xAsx films suggests that relatively thin films-rich GaN1-xAsx Refs. 6­8 and dilute Te-rich ZnOxTe1-x.9 Recently, we overcame the miscibility gap of GaAs fit to the solar spectrum offering the opportunity to design high efficiency multijunction solar cells

  15. Phenotypic assortment in wild primate networks: implications for the dissemination of information

    E-Print Network [OSTI]

    Carter, Alecia J.; Lee, Alexander E. G.; Marshall, Harry H.; Ticó, Miquel Torrents; Cowlishaw, Guy

    2015-05-13

    re st ne igh bo ur pr ox im ity (n n) an dg ro om in g( gr oo m )a sso cia tio ns fo rf ou rp he no ty pic tra its ov er th ey ea rs 20 09 –2 01 4f or tw ot ro op so fb ab oo ns (J, L) .( n. a. re fe rs to ph en ot yp es wh ich we re no tm ea su re di...

  16. PUP.master.W.rev January 13, 2006 Annals of Mathematics Studies

    E-Print Network [OSTI]

    Rapoport, Michael

    , Oxford- shire OX20 1SY All Rights Reserved Library of Congress Cataloging-in-Publication Data Kudla Library Cataloging-in-Publication Data is available This book has been composed in Times Roman in LATEX-dimensional case 27 2.2 Pic(M), CH1 Z(M), and CH2 Z(M) 30 2.3 Green functions 31 2.4 Pic(M), CH 1 Z(M), and CH 2 Z

  17. Molecular Dynamics Simulation of GaAs Molecular Beam Epitaxy D. A. Murdick,1

    E-Print Network [OSTI]

    Wadley, Haydn

    of Virginia, Charlottesville, Virginia 22904, USA 2 Department of Materials, University of Oxford, Oxford OX1 3PH, UK ABSTRACT The vapor deposition of epitaxial GaAs and (Ga,Mn)As thin films during far-temperature growth of Ga0.94Mn0.06As and the Mn clustering trends in as-grown films. INTRODUCTION GaAs is widely used

  18. WIRELESS Eduroam Wireless Network for College Eduroam is a global wireless roaming consortium which gives members of education and research

    E-Print Network [OSTI]

    Capdeboscq, Yves

    WIRELESS Eduroam Wireless Network for College Eduroam is a global wireless roaming consortium://cat.eduroam.org (You can visit https://cat.eduroam.org whilst connected to the OWL wireless network without a password://register.it.ox.ac.uk/self/remote_access If you are already in Oxford you can get to this URL via the OWL wireless network 2. Once you have

  19. Studies on Toxic Substances of Locoweeds, Astragalus earlei and Others. 

    E-Print Network [OSTI]

    Wender, S. H. (Simon Harold); Fraps, G. S. (George Stronach)

    1944-01-01

    Alcohol-soluble phosphotungstate, locoed cats-Fig. 1 P-2 Alcohol-insoluble phosphotungstate, soluble in acetone, did not loco cats P Precipitated with silicotungstic acid, from alcohol-soluble phospho- tungstate-Fig. 2, SP Slightly physiologically... of locoism. NBA-Not pre- cipitated with silicotungstic acid, not ben- zoylated, not adsorbed with aluminam ox- ide, locoed cats. 1'2 BULLETIN NO. 650, TEXAS AGRICULTURAL EXPERIMENT STATION though not producing many of the typical symptoms of locoism...

  20. NAVAL POSTGRADUATE SCHOOL Monterey, California

    E-Print Network [OSTI]

    #12;Thesis F2lJ6 NAVAL POSTGRADUATE SCHOOL Monterey, California THESIS AN ANALYSIS OF HYPERSPECTRAL;DUDLEY K~OX LlRRARY NAVAL -0 SCHOOL MONTE"ev C.A ;:I3~~5101 #12;5. FlJNDING NUMBERS 8, PERFOR"TE IN SYSTEMS TF.CHNOLOGY (SPACE SYSTEMS OPERATJONS) from the NAVAL POSTGRADUATE SCHOOL J. . . . Matthew

  1. WellcomeHistoryISSUE 40 SPRING 2009 Feature article 2

    E-Print Network [OSTI]

    Rambaut, Andrew

    WellcomeHistoryISSUE 40 SPRING 2009 Feature article 2 Child mortality in Uruguay oxFord uNit 5 Wor and the people reSearcH reSourceS 18 Broadmoor Hospital archive booK revieWS 20 caleNdar 24 #12;2 Manchester unit: Radcliffe Square in Oxford. Line engraving after James Gibbs. See pages 5­15 on the Oxford Wellcome Unit

  2. Introducing improved structural properties and salt dependence into a coarse-grained model of DNA

    SciTech Connect (OSTI)

    Snodin, Benedict E. K. Mosayebi, Majid; Schreck, John S.; Romano, Flavio; Doye, Jonathan P. K.; Randisi, Ferdinando; Šulc, Petr; Ouldridge, Thomas E.; Tsukanov, Roman; Nir, Eyal; Louis, Ard A.

    2015-06-21

    We introduce an extended version of oxDNA, a coarse-grained model of deoxyribonucleic acid (DNA) designed to capture the thermodynamic, structural, and mechanical properties of single- and double-stranded DNA. By including explicit major and minor grooves and by slightly modifying the coaxial stacking and backbone-backbone interactions, we improve the ability of the model to treat large (kilobase-pair) structures, such as DNA origami, which are sensitive to these geometric features. Further, we extend the model, which was previously parameterised to just one salt concentration ([Na{sup +}] = 0.5M), so that it can be used for a range of salt concentrations including those corresponding to physiological conditions. Finally, we use new experimental data to parameterise the oxDNA potential so that consecutive adenine bases stack with a different strength to consecutive thymine bases, a feature which allows a more accurate treatment of systems where the flexibility of single-stranded regions is important. We illustrate the new possibilities opened up by the updated model, oxDNA2, by presenting results from simulations of the structure of large DNA objects and by using the model to investigate some salt-dependent properties of DNA.

  3. Hydrogenation of CO2 to methanol: Importance of metal–oxide and metal–carbide interfaces in the activation of CO2

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

    Rodriguez, José A.; Liu, Ping; Stacchiola, Dario J.; Senanayake, Sanjaya D.; White, Michael G.; Chen, Jingguang G.

    2015-09-30

    In this study, the high thermochemical stability of CO2 makes it very difficult to achieve the catalytic conversion of the molecule into alcohols or other hydrocarbon compounds, which can be used as fuels or the starting point for the generation of fine chemicals. Pure metals and bimetallic systems used for the CO2 ? CH3OH conversion usually bind CO2 too weakly and, thus, show low catalytic activity. Here, we discuss a series of recent studies that illustrate the advantages of metal–oxide and metal–carbide interfaces when aiming at the conversion of CO2 into methanol. CeOx/Cu(111), Cu/CeOx/TiO2(110), and Au/CeOx/TiO2(110) exhibit an activity formore »the CO2 ? CH3OH conversion that is 2–3 orders of magnitude higher than that of a benchmark Cu(111) catalyst. In the Cu–ceria and Au–ceria interfaces, the multifunctional combination of metal and oxide centers leads to complementary chemical properties that open active reaction pathways for methanol synthesis. Efficient catalysts are also generated after depositing Cu and Au on TiC(001). In these cases, strong metal–support interactions modify the electronic properties of the admetals and make them active for the binding of CO2 and its subsequent transformation into CH3OH at the metal–carbide interfaces.« less

  4. Introducing Improved Structural Properties and Salt Dependence into a Coarse-Grained Model of DNA

    E-Print Network [OSTI]

    Benedict E. K. Snodin; Ferdinando Randisi; Majid Mosayebi; Petr Sulc; John S. Schreck; Flavio Romano; Thomas E. Ouldridge; Roman Tsukanov; Eyal Nir; Ard A. Louis; Jonathan P. K. Doye

    2015-05-19

    We introduce an extended version of oxDNA, a coarse-grained model of DNA designed to capture the thermodynamic, structural and mechanical properties of single- and double-stranded DNA. By including explicit major and minor grooves, and by slightly modifying the coaxial stacking and backbone-backbone interactions, we improve the ability of the model to treat large (kilobase-pair) structures such as DNA origami which are sensitive to these geometric features. Further, we extend the model, which was previously parameterised to just one salt concentration ([Na$^+$]=0.5M), so that it can be used for a range of salt concentrations including those corresponding to physiological conditions. Finally, we use new experimental data to parameterise the oxDNA potential so that consecutive adenine bases stack with a different strength to consecutive thymine bases, a feature which allows a more accurate treatment of systems where the flexibility of single-stranded regions is important. We illustrate the new possibilities opened up by the updated model, oxDNA2, by presenting results from simulations of the structure of large DNA objects and by using the model to investigate some salt-dependent properties of DNA.

  5. High Temperature Strength of YSZ Joints Brazed with Palladium Silver Copper Oxide Filler Metals

    SciTech Connect (OSTI)

    Darsell, Jens T.; Weil, K. Scott

    2010-06-09

    The Ag-CuOx system is being investigated as potential filler metals for use in air brazing high-temperature electrochemical devices such as solid oxide fuel cells and gas concentrators. The current study examines the effects of palladium addition on the high temperature joint strength of specimens prepared from yttria stabilized zirconia (YSZ) bars brazed with the binary Ag-CuOx, and 15Pd-Ag-CuO. It was found that while the binary Ag-CuOx system exhibits stronger room temperature strength than the 15Pd system the strength is reduced to values equivalent of the 15Pd system at 800°C. The 15Pd system exhibits a lower ambient temperature strength that is retained at 800°C. In both systems the failure mechanism at high temperature appears to be peeling of the noble metal component from the oxide phases and tearing through the noble metal phase whereas sufficient adhesion is retained at lower temperatures to cause fracture of the YSZ substrate.

  6. Transition metal complexes of oxazolinylboranes and cyclopentadienyl-bis(oxazolinyl)borates: Catalysts for asymmetric olefin hydroamination and acceptorless alcohol decarbonylation

    SciTech Connect (OSTI)

    Manna, Kuntal [Ames Laboratory

    2012-12-17

    The research presented and discussed in this dissertation involves the synthesis of transition metal complexes of oxazolinylboranes and cyclopentadienyl-bis(oxazolinyl)borates, and their application in catalytic enantioselective olefin hydroamination and acceptorless alcohol decarbonylation. Neutral oxazolinylboranes are excellent synthetic intermediates for preparing new borate ligands and also developing organometallic complexes. Achiral and optically active bis(oxazolinyl)phenylboranes are synthesized by reaction of 2-lithio-2-oxazolide and 0.50 equiv of dichlorophenylborane. These bis(oxazolinyl)phenylboranes are oligomeric species in solid state resulting from the coordination of an oxazoline to the boron center of another borane monomer. The treatment of chiral bis(oxazolinyl)phenylboranes with sodium cyclopentadienide provide optically active cyclopentadienyl-bis(oxazolinyl)borates H[PhB(C{sub 5}H{sub 5})(Ox{sup R}){sub 2}] [Ox{sup R} = Ox{sup 4S-iPr,Me2}, Ox{sup 4R-iPr,Me2}, Ox{sup 4S-tBu]}. These optically active proligands react with an equivalent of M(NMe{sub 2}){sub 4} (M = Ti, Zr, Hf) to afford corresponding cyclopentadienyl-bis(oxazolinyl)borato group 4 complexes {PhB(C{sub 5}H{sub 4})(Ox{sup R}){sub 2}}M(NMe{sub 2}){sub 2} in high yields. These group 4 compounds catalyze cyclization of aminoalkenes at room temperature or below, providing pyrrolidine, piperidine, and azepane with enantiomeric excesses up to 99%. Our mechanistic investigations suggest a non-insertive mechanism involving concerted C?N/C?H bond formation in the turnover limiting step of the catalytic cycle. Among cyclopentadienyl-bis(oxazolinyl)borato group 4 catalysts, the zirconium complex {PhB(C{sub 5}H{sub 4})(Ox{sup 4S-iPr,Me2}){sub 2}}Zr(NMe{sub 2}){sub 2} ({S-2}Zr(NMe{sub 2}){sub 2}) displays highest activity and enantioselectivity. Interestingly, {S-2}Zr(NMe{sub 2}){sub 2} also desymmetrizes olefin moieties of achiral non-conjugated aminodienes and aminodiynes during cyclization. The cyclization of aminodienes catalyzed by {S-2}Zr(NMe{sub 2}){sub 2} affords diastereomeric mixture of cis and trans cylic amines with high diasteromeric ratios and excellent enantiomeric excesses. Similarly, the desymmetrization of alkyne moieties in {S-2}Zr(NMe{sub 2}){sub 2}-catalyzed cyclization of aminodiynes provides corresponding cyclic imines bearing quaternary stereocenters with enantiomeric excesses up to 93%. These stereoselective desymmetrization reactions are significantly affected by concentration of the substrate, temperature, and the presence of a noncyclizable primary amine. In addition, both the diastereomeric ratios and enantiomeric excesses of the products are markedly enhanced by N-deuteration of the substrates. Notably, the cationic zirconium-monoamide complex [{S-2}Zr(NMe{sub 2})][B(C{sub 6}F{sub 5}){sub 4}] obtained from neutral {S-2}Zr(NMe{sub 2}){sub 2} cyclizes primary aminopentenes providing pyrrolidines with S-configuration; whereas {S-2}Zr(NMe{sub 2}){sub 2} provides R-configured pyrrolidines. The yttrium complex {S-2}YCH{sub 2}SiMe{sub 3} also affords S-configured pyrrolidines by cyclization of aminopentenes, however the enantiomeric excesses of products are low. An alternative optically active yttrium complex {PhB(C{sub 5}H{sub 4})(Ox{sup 4S-tBu}){sub 2}}YCH{sub 2}SiMe{sub 3} ({S-3}YCH{sub 2}SiMe{sub 3}) is synthesized, which displays highly enantioselective in the cyclization of aminoalkenes at room temperature affording S-configured cyclic amines with enantiomeric excesses up to 96%. A noninsertive mechanism involving a six-membered transition state by a concerted C?N bond formation and N?H bond cleavage is proposed for {S-3}YCH{sub 2}SiMe{sub 3} system based on the kinetic, spectroscopic, and stereochemical features. In the end, a series of bis- and tris(oxazolinyl)borato iridium and rhodium complexes are synthesized with bis(oxazolinyl)phenylborane [PhB(Ox{sup Me2}){sub 2}]{sub n}, tris(oxazolinyl)borane [B(Ox{sup Me2}){sub 3}]n, and tris(4,4-dimethyl-2-oxazolinyl)phenylborate [To{sup M}]{sup ?}. All these new an

  7. Organic waste amendments effect on zinc fraction of two soils

    SciTech Connect (OSTI)

    Shuman, L.M.

    1999-10-01

    Organic soil amendments can ameliorate metal toxicity to plants by redistributing metals to less available fractions. The objective of this study was to determine the effects of organic amendments on Zn distribution among soil fractions. Two soils were amended with five organic waste materials (some of which contained Zn) or commercial humic acid with and without 400 mg kg{sup {minus}1} Zn, incubated, and fractionated using a sequential extraction technique. Where no Zn was added most of the metals were in the residual fraction. Commercial compost, poultry litter, and industrial sewage sludge increased Zn in the exchangeable (EXC), organic (OM), and manganese oxide (MnOx) fractions due to Zn in the materials. Spent mushroom compost (SMC) redistributed Zn from the EXC fraction to the MnOx fraction for the coarse-textured soil. Where Zn was added, most of the metal was in the EXC and OM fractions. The SMC and humic acid lowered Zn in the EXC fraction and increased Zn in the other fractions. Effects of the organic materials on Zn in soil fractions were more evident for the sandy soil dominated by quartz in the clay than for the finer-textured soil dominated by kaolinite in the clay-size fraction. It was concluded that organic materials high in Zn can increase Zn in the EXC, OM, and MnOx fractions where the soil is not contaminated and others such as SMC and HA can lower the potential availability of Zn in contaminated soils by redistributing it from the EXC to less soluble fractions.

  8. A distributed converging overland flow model: 3. Application to Natural Watersheds 

    E-Print Network [OSTI]

    Singh, Vijay P.

    1976-01-01

    I we noted that analytical solutions are not feasible for time-varying (complex) rainfall input. The most practical method is to utilize hybrid solutions. For a complete dis- cussion on hybrid solutions, see the work by Singh [1974, 1975a]. We... will only give numerical solutions here. The cou- pling of the continuity equation and the kinematic approxima- tion to the momentum equation [Singh, 1974] yields Oh _3_ na(x)h _ Oh h, Oo (x) a(x)h\\" ot + Ox - q(x' t) + ( ? - x) ( ) where h...

  9. History, Development, and Modern Applications of the Cyanide Process

    E-Print Network [OSTI]

    Cone, Victor M.

    1906-06-01

    of these metals are for­ med in an ore containing limestone or clay, double decomposition occurs with the production of sulphate of lime or alluminum, and ox­ ides or carbonates of the heavy metals, which are dissolved in the cyanide, thus: ZnSOytCaC03=ZnC05t... be removed by leaching with water, and then a solution of caus­ tic soda or lime is run in on the ore, and after standing some time is drained off and followed bv the cyanide solution. The insoluble basic salts are thus converted into ferric hydrate...

  10. The Radon-Penrose correspondence II: Line bundles and simple D-modules

    E-Print Network [OSTI]

    D'Agnolo, Andrea

    to the incidence relation in G1(Cn) Ã? Gp(Cn). We show in partic- ular that on such a space, simple modules along V+l. A filtration {Mk}kZ is called good if the Mk's are OX- coherent and, locally on X, Mk = 0 for k 0, and DX(l)Mk = Mk+l for any l 0 and for k 0. If M is endowed with a good filtration, we set: GM = OTX -1GDX -1 GM

  11. Laws restricting price-fixing and their enforcements 

    E-Print Network [OSTI]

    Johnston, Lon Don

    1962-01-01

    'aI;eescsesfh'k. . credo, yrXaa, ~ss, aoasrox cear @abide ebiHeias, ess. , alee greasily tha p'sxf'oxaaaca of vaxioui fanetioaa chat a frao aiiLsxpxisa mast':, acccep&sh. assaxiisg 'pxofit aagimisatioa as tha goal af ths ia8ivi&uik ox' firm~ it ia readily apparel...'elojsd. co. the "sncenb ' ' ' thbt ' in". Che eighteenth"-:CS4t'orf' egreemgint'p SCIOag, 'Sillerg 'tc 16@t. entpnt, ' divide Rect@Ca'. or' et~Be . fix prices were'conspiracies kn-rsptrsint'of credo for vbicb ia)ured''parties could claim dcnsgesi 1]ader...

  12. Development of Safe Methods for Canning Blackeye Peas at Home. 

    E-Print Network [OSTI]

    Crawford, Ellen G.; Sheppard, M. Patricia; Smith, Annie B.; Cover, Sylvia

    1948-01-01

    AGRICULTURAL AND MECHANICAL COLLEGE SYSTEM GIBB GILCHRIST, Chancellor The Cover Picture A load OF pint jars OF blackeye peas is being removed fro111 the canner. Three of the 16 jars were used for ireat penetration tests. The tliermocouple wires were... inserted in the jars by means of tlie flat type stuffing !,ox soldered to the lid. One jar ~\\~itll a tlrern~o- couple attached is on the table, another may be seen in the top layer in tlie canner and the third is in the bottonl layel- of tlie canner...

  13. On-Site Wastewater Treatment Systems: Spray Distribution System (Spanish) 

    E-Print Network [OSTI]

    Lesikar, Bruce J.; Enciso, Juan

    2002-04-18

    efluente de esta calidad: unidades de tratamiento aer?bico de Clase I, y filtros de arena intermi- tentes. Ambos son procesos de tratamiento aer?bicos (usan ox?geno). La Comisi?n para la Conservaci?n de los Recursos Naturales de Texas mantiene una lista de... las unidades de tratamiento aer?bico, Clase I, que han sido aprobadas para su uso en Texas. Los filtros de arena intermitentes deben dise?arse para ajustarse a las condiciones del sitio, y se aprueban seg?n el dise?o para su sitio. Otros tipos de...

  14. Coarse-graining DNA for simulations of DNA nanotechnology

    E-Print Network [OSTI]

    Jonathan P. K. Doye; Thomas E. Ouldridge; Ard A. Louis; Flavio Romano; Petr Sulc; Christian Matek; Benedict E. K. Snodin; Lorenzo Rovigatti; John S. Schreck; Ryan M. Harrison; William P. J. Smith

    2013-08-18

    To simulate long time and length scale processes involving DNA it is necessary to use a coarse-grained description. Here we provide an overview of different approaches to such coarse graining, focussing on those at the nucleotide level that allow the self-assembly processes associated with DNA nanotechnology to be studied. OxDNA, our recently-developed coarse-grained DNA model, is particularly suited to this task, and has opened up this field to systematic study by simulations. We illustrate some of the range of DNA nanotechnology systems to which the model is being applied, as well as the insights it can provide into fundamental biophysical properties of DNA.

  15. Coarse-graining DNA for simulations of DNA nanotechnology

    E-Print Network [OSTI]

    Doye, Jonathan P K; Louis, Ard A; Romano, Flavio; Sulc, Petr; Matek, Christian; Snodin, Benedict E K; Rovigatti, Lorenzo; Schreck, John S; Harrison, Ryan M; Smith, William P J

    2013-01-01

    To simulate long time and length scale processes involving DNA it is necessary to use a coarse-grained description. Here we provide an overview of different approaches to such coarse graining, focussing on those at the nucleotide level that allow the self-assembly processes associated with DNA nanotechnology to be studied. OxDNA, our recently-developed coarse-grained DNA model, is particularly suited to this task, and has opened up this field to systematic study by simulations. We illustrate some of the range of DNA nanotechnology systems to which the model is being applied, as well as the insights it can provide into fundamental biophysical properties of DNA.

  16. Polarized Neutron Reflectometry of Nickel Corrosion Inhibitors

    E-Print Network [OSTI]

    Wood, Mary. H.; Welbourn, Rebecca J. L.; Zarbakhsh, Ali; Gutfreund, Philipp; Clarke, Stuart M.

    2015-06-07

    period of 24 hours to ensure equilibration was attained. The solid was then separated by centrifugation, and the final concentration of the supernatant in each case measured using a Total Organic Carbon Analyser (Sievers InnovOx 3.00). PNR PNR... the reflectivity of the two aforementioned spin states without polarisation analysis. The beam footprint on the sample was fixed to (35 x 35) mm2 and the angular divergence of the incoming beam was ??/? = 3 % (FWHM). Two nickel-sputtered silicon substrates (from...

  17. Confirmation of accounts receivable by direct communication with debtors 

    E-Print Network [OSTI]

    Berry, Abner Wilkes

    1940-01-01

    stated in ite report that canditing pxooedure hae kept and oontinues to keep pace mith tbs growth snd development of industry. " The test of auditixe procedure haa in a4aost oVexy oaee besdx "XS it reaecnab3. SV" and cXS it praetieableV" Xn many Oaeee... auditere, in anewsx'in@ these questions, have considered ths client in reaohind; a deoision. Xn the verif'ication of accounts receivable and in other phases ox procedures of auditing, public aooonntents have recently felt definite limitations, Tzus te...

  18. A systematic survey for sex-linked cellular antigens in chickens 

    E-Print Network [OSTI]

    Evans, John Willard

    1951-01-01

    ), with absorbed' antieera AC7 indicatee that, the antigenic cotxponent detected may be 16. because the strong rcactionx obtained in the absorbed fioid Ac'f 'and reagent 36 correepoxuix axtd the txeo weak reactions shown by IN)If and II9997 probabIy' represent...XQCre OX the fi&iiIy~ '2'hero arc cover@I quectionabis weak reactions of. AC9 whtich dc not exact hand, the weak react" bnc ch w ~~', ttxc abaox'bcd AC7 flci c~er~ond , perfectiy wi'th tax pattern %Opec~' for, thill 8Ix aIIAI3Ak aegregatixxg...

  19. Measuring the Higgs boson mass in dileptonic W-boson decays at hadron colliders

    E-Print Network [OSTI]

    Barr, Alan; Gripaios, Ben; Lester, Christopher G.

    2009-01-01

    Ju l 2 00 9 Cavendish-HEP-09/04 Measuring the Higgs boson mass in dileptonic W -boson decays at hadron colliders Alan J. Barr,1, ? Ben Gripaios,2, † and Christopher G. Lester3, ‡ 1Denys Wilkinson Building, Keble Road, Oxford, OX1 3RH, United Kingdom 2... CERN PH-TH, Geneva 23, 1211 Switzerland 3Cavendish Laboratory, Dept of Physics, JJ Thomson Avenue, Cambridge, CB3 0HE, United Kingdom (Dated: July 22, 2009) It is expected that hadron collider measurements of the Higgs boson mass using the decay h ? W...

  20. Neuronal cicuits and reinforcement mechanisms underlying feeding behaviour

    E-Print Network [OSTI]

    Huang Cao, Zhen Fang

    2015-03-03

    Tomato appropriately marks LepRb neurons in the hypothalamus of LepRbTom animals. 55 Figure 3.2 LHALepRb neurons are LHAGABA LTS neurons 60 Figure 3.3 Glucose directly inhibits LHALepRb neurons 63 Figure 3.4 LHALepRb neurons are modulated by OX 65 Figure 3.5 ChR2... -releasing hormone DA: dopamine DIC: differential interference contrast DMH: dorsomedial nucleus of the hypothalamus DR: dorsal raphe DREADD: designer receptor exclusively activated by designer drugs DS: dorsal surface of the brain DT: diphtheria toxin DVC...

  1. Recycling asphaltic concrete with sulphur as a supplemental binder 

    E-Print Network [OSTI]

    Barnett, Robert William

    1976-01-01

    ) (275'F) Ring and Ball Softening Point Specific Gravity 0. 2 mm 1. 2 mm Too Hard 14. 7 cSt 15S'F 1. 04 D 5 [53] D 5 [53] D 2170 [54] D 2170 [54] D 36 [55] D 70 [56] a Extraction ? ASTM Designation: D 2172 [57] TABLE 2--Physical... properties of the recovered aggregate. Property Fine Aggregate a b Coarse Aggregate Specific Gravity Bu11% SSD 2. 59 2. 60 Specific Gravity Apparent Absorption 2. 65 1. 4X 2. 66 1. 2X Percent Passing No. 200 Sieve S. OX ASTM Designation: C 128...

  2. The Ecohydrological Implications of a Restored Rangeland in Central Texas 

    E-Print Network [OSTI]

    Haley, Patrick 1989-

    2012-04-22

    .stroh@anglia.ac.uk 3 Institute of Zoology, Poznan? University of Life Science, Wojska Polskiego 71C, 60-625 Poznan?, Poland 4 NERC Centre for Ecology and Hydrology, Maclean Building, Benson Lane, Crowmarsh Gifford, Wallingford OX10 8BB, U.K. ? 2010 Society... for Ecological Restoration International doi: 10.1111/j.1526-100X.2010.00740.x the intensive arable land use that is prevalent today. The remaining undrained habitat is now located within a few isolated nature reserves on the southern fringes of the original...

  3. Synthesis of iron oxides and the influence of organic acids on the resolubilization of iron minerals 

    E-Print Network [OSTI]

    Clarke, Eric Thacher

    1984-01-01

    to renew Fe in solution (Viets and Lindsay, 1973). Furthermore, a chelate test could be used to simulate the dissolution of oxide phases with high specific surface areas or poor crystallinity. Borggaard (1976) used EDTA buffered at pH 5. 2 and lower... and reducing agents, buffered in 1. 0 N NH4 acetate at pH 3. 5 and 4. 75, Dissolution rate in oxalic acid decreased in the following order: ferrihydrite, lep1docroc1te, and goeth1te. Rate of Fe ox1de dissolution 1n the presence of com- plexing and reducing...

  4. Ultra high vacuum broad band high power microwave window

    DOE Patents [OSTI]

    Nguyen-Tuong, Viet (Seaford, VA); Dylla, III, Henry Frederick (Yorktown, VA)

    1997-01-01

    An improved high vacuum microwave window has been developed that utilizes high density polyethylene coated on two sides with SiOx, SiNx, or a combination of the two. The resultant low dielectric and low loss tangent window creates a low outgassing, low permeation seal through which broad band, high power microwave energy may be passed. No matching device is necessary and the sealing technique is simple. The features of the window are broad band transmission, ultra-high vacuum compatibility with a simple sealing technique, low voltage standing wave ratio, high power transmission and low cost.

  5. 2.2.25. Hallar una formula asintotica para nx (n) donde (n) = Ahora, hallamos nx n. Usamos para ello la identidad de Abel, con

    E-Print Network [OSTI]

    Cilleruelo, Javier

    2.2.25. Hallar una f´ormula asint´otica para nx (n) donde (n) = d|n d. Soluci´on: nx (n) = nx d|n d = d,q dqx d = qx dx/q d Ahora, hallamos nx n. Usamos para ello la identidad de Abel, con a(n) = 1 (A(x) = x ), y f(x) = x. Entonces: nx n = x x - x 1 t dt = x2 + O(x) - x 1 tdt + x 1 {t}dt = = x2 - x2 2 + 1

  6. Uranium in the Oatman Creek granite of Central Texas and its economic potential 

    E-Print Network [OSTI]

    Conrad, Curtis Paul

    1982-01-01

    50 Fission track pattern corresponding to 5C showing uranium concentration 1n cracks which have been infilled with iron ox1de material. Note the extreme enrichment of uran1um in the large 1ron oxide mineral. 50 Photom1crograph 1n plane polarized...buted throughout the plagioclase grain along fractures cutt1ng perpendicular to the cleavage traces. 56 7C Fission track pattern corresponding to 7A showing uranium enr1chment 1n the fractures. 56 BA Photomicrograph in plane polar1zed light of a...

  7. Evaluation of ground-water quality impacts of lignite waste disposal at a Texas lignite mine 

    E-Print Network [OSTI]

    Green, Deborah Joan

    1984-01-01

    to be responsible for the high degree of selen1um attenuation 1s adsorption of the element by amorphous iron and alum1num ox1des and organic matter abundant in the clay soils of the study area. ACKNOWLEDGEMENTS I would like to thank the members of my thes1s... at the study site for a 1984, and c. comparison lines cations in the sludge ls anions in the sludge ls. concentration (mg/I) January 1983, b. June of contour map center 47 . 48 51 Figure 14 Log-log adsorption relat1on for preliminary evaluation...

  8. A study of the use of feed supplements for prevention of experimental bitterweed (Hymenoxys odorata) poisoning in sheep 

    E-Print Network [OSTI]

    Bridges, Gary Wayne

    1977-01-01

    in reducing the toxicity of bitterv!eed (~H&!en~ox s odorata). In each of four experiments, sheep were divided into four groups of two and were dosed with bitterweed equal in weight to 0. 1/, 0. 2/, 0. 4'i and 0. 8'/ of their body weight. The median lethal... as above and the LD50 was estimated to be 4. 0 + 0. 3 gm bitterweed per kilogrtln! of body weight. Sodium sulfate, administered to the lambs at a rate of 340 mg per kilogram of body v!eight prior to dosing with bitterv!eed, also affected the toxicity...

  9. Interviews of Dilmaya Gurung of Nepal, by Alan Macfarlane

    E-Print Network [OSTI]

    Macfarlane, Alan

    2015-03-05

    planning (Laproscopy). In Pokhara, Father Bhuwansing took me to hospital for treatment. After treatment, I stayed for 10 days in Pokhara and had an energy diet. The diet was provided by Father Bhuwansing. The diet was eggs, meat and ghee. Then I... the shrine both cow or ox dung can be used. After arranging everything for puja and finishing making the offering (prasad), the small pieces of clothes which were brought by mothers are hung and put on some red powder, and we wind thread around the shrine...

  10. Effectiveness and relative cost of chemical treatments for the control of post oak and blackjack oak 

    E-Print Network [OSTI]

    Suffel, Paul H

    1952-01-01

    that foliage treatment of sprout growth less than one year of age was ineffective. In evaluating liquids as carriers for hormone type herbicides, Waldrip (1$) observed that ~ster and oil/eater emulsions were less satisfactory than kerosene ox' diesel oil... T herbicides in Tables I ~ I I, I I I x and IV are of the isopxopyl ester type. Foliage spray treatments were made with the estexs of 2&~ and 2~4, 5-T in carriers of kerosene& Soluble Oil D~ and diesel oil. The spxay mixtures were applied to the entire...

  11. Final Report on CRADA ORNL05-0703

    SciTech Connect (OSTI)

    Christen, D.K.

    2010-04-27

    The work of this CRADA has been focused on the development of Rolling-Assisted Biaxially Textured Substrate (RABiTS)-based high-temperature superconducting (HTS) coated conductor technology that is in the pre-commercial development stage. Metal-Oxide Technologies, Inc. (MetOx) is a Houston-based small business that is developing and manufacturing second-generation (2G) HTS wire using an all-Metallo-Organic Chemical Vapor Deposition (MOCVD) process, including the buffer layers and HTS coating. Advances toward commercialization were enabled by coordinated interactions that facilitated the synthesis, characterization, and iterative optimization of prototype 2G wire segments.

  12. An analysis of intraseasonal demand for Texas winter carrots 

    E-Print Network [OSTI]

    Carlson, Chriss Heath

    1970-01-01

    AN ANALYSIS OF INTRASEASONAL DEMAND FOR TEXAS NINTER CARROTS A Thesis CHBISS HEATH CARLSON Submitted to the Graduate College of Texas ARM University in partial fulfi13ment ox the requirement for the degree of MASTER OF SCIENCE August 1970 Ma...]or Sub)ect: Agricultural Economics AN ANALYSIS OF IiVTRASEASONAL DEMAND FOR TEXAS HINTER CARROTS A Thesis by CHRISS HEATH CARLSOiV , Approved as to style and content by; Chairman of Commit Head. of Department, 'member Nember August l970...

  13. A Phylogenetic Analysis of Orlando Gibbons' Prelude in G

    E-Print Network [OSTI]

    Windram, Heather; Charlston, Terence; Howe, Christopher

    2014-01-01

    –83. 14 T. Roos and Y. Zou, ‘Analysis of textual variation by latent tree structures’, Proceedings of 2011 International Conference on Data Mining, eds. D. Cook, J. Pei, W. Wang, O. Zaïane and X. Wu, (2011), pp.567–76. 15 For a review of the field see C. J... .chch.ox.ac.uk/music/page.php?set=Mus.+89, page last updated 2010, accessed 7 August 2014); A. Woolley, English Keyboard Sources and their Context, c.1660–1720 (PhD diss., U. of Leeds, 2008), Appendix B, pp.228–76; A. Woolley, ‘Manuscript additions to a copy of John Playford’s Select...

  14. Reveille V - 13 

    E-Print Network [OSTI]

    Unknown

    2006-01-01

    questions. First, frow what aohools should students not offering vocational agrkoultux'e for entranse OX?41t be Sekeetedv Seeend, hOW ShOuld the 1nfluenua Of the 'v?xiation in native ability upon soholastio psrfox aanoe bs equate4 for the two sestions... is used fox' stu4ents not offering vocational agrioulture fox' entr?noe oredit). Croup refers to those in41v1duals falling in the sane payohologio?l test soore interval. 91Viaiun refera tO the SehOOl entered in the AgX'ieultural and Meohanioal College...

  15. A proposed system to automatically control audio sound-to-noise levels 

    E-Print Network [OSTI]

    Neinast, Gary Strickland

    1957-01-01

    for the degree oi' MASTER OP SCIENCE August 1957 Major Sub]eot'f Eleotrioal Engineering A PROPOSED SYSTEM TO AUTOMATICALLY CONTROL AUDIO SOUND-TO-NOISE LEVELS k Thesis QARY S. NEINAST Approved as to style and content by& islay a FBNR o 0 ee e epsx' ne... fxequency shown. This is the sero decibel level that 1s produced by a pure tone of 1000 cycles pex second at an intensity of . 0002 dynes per square centimeter. ~loudas . The Ieudaess of a sousd I ~ the asouut ef feeling ox sensation produced...

  16. Some effects of soil differences and past grazing use on the amount and composition of vegetation on the Texas Range Station 

    E-Print Network [OSTI]

    Thomas, Gerald W

    1951-01-01

    V. Species composition and, total density of vegetation in relation to soil series eo es creen ~ om os on Total a o grass e~ p ~ Soil Ve station Tobosa and Curly- oats Three- Other Sertee 1 Densit Ox'ass XXes uite Orama aen S oies Valera Oxona... data shoeing the average number of brush speoies per plot by soil series 0 Series Total Brush Ses uite trees Px iokl Pear ex rus 6 oies Valera Osona Tobosa Irion Bandall 6?90 10?07 10 ?19 2?51 2 ?27 5 ?57 4 ~ 13 3 ~ 15 2?ll 4 ?55 6...

  17. Structure of Extremely Nanosized and Confined In-O Species in Ordered Porous Materials

    E-Print Network [OSTI]

    J. M. Ramallo Lopez; M. Renteria; E. E. Miro; F. G. Requejo; A. Traverse

    2007-04-18

    Perturbed-angular correlation, x-ray absorption, and small-angle x-ray scattering spectroscopies were suitably combined to elucidate the local structure of highly diluted and dispersed InOx species confined in porous of ZSM5 zeolite. These novel approach allow us to determined the structure of extremely nanosized In-O species exchanged inside the 10-atom-ring channel of the zeolite, and to quantify the amount of In2O3 crystallites deposited onto the external zeolite surface.

  18. Ultra high vacuum broad band high power microwave window

    DOE Patents [OSTI]

    Nguyen-Tuong, V.; Dylla, H.F. III

    1997-11-04

    An improved high vacuum microwave window has been developed that utilizes high density polyethylene coated on two sides with SiOx, SiNx, or a combination of the two. The resultant low dielectric and low loss tangent window creates a low outgassing, low permeation seal through which broad band, high power microwave energy may be passed. No matching device is necessary and the sealing technique is simple. The features of the window are broad band transmission, ultra-high vacuum compatibility with a simple sealing technique, low voltage standing wave ratio, high power transmission and low cost. 5 figs.

  19. Cost-effective and highly sensitive cholesterol microsensors with fast response based on the enzyme-induced conductivity change of polyaniline

    SciTech Connect (OSTI)

    Fang, Kuan-Chung; Chu, Chia-Ho; Hsu, Chen-Pin; Kang, Yen-Wen; Fang, Jung-Ying; Chen, Chih-Chen; Li, Sheng-Shian; Andrew Yeh, J.; Yao, Da-Jeng; Wang, Yu-Lin, E-mail: ylwang@mx.nthu.edu.tw [Institute of Nanoengineering and Microsystems, National Tsing Hua University, Hsinchu 300, Taiwan (China); Hsu, Chia-Hsien [Division of Medical Engineering, National Health Research Institutes, MiaoLi, Taiwan (China); Huang, Yu-Fen [Department of Biomedical Engineering and Environmental Science, National Tsing Hua University, Hsinchu 300, Taiwan (China)

    2014-09-15

    In this study, a cost-effective and highly sensitive cholesterol microsensor, which is consisted of cholesterol oxidase (ChOx), horseradish peroxidase (HRP), and polyaniline (PANI), was developed based on the enzyme-induced conductivity change of PANI with fast response. Hydrogen peroxide is produced via the reaction between cholesterol and ChOx, which was immobilized in a dialysis membrane. The produced hydrogen peroxide can oxidize HRP, which can be reduced by oxidizing PANI, thus resulting in decreased conductivity of the polyaniline thin film. The reduced HRP can be oxidized again by hydrogen peroxide and the cycle of the oxidation/reduction continues until all hydrogen peroxide are reacted, leading to the high sensitivity of the sensor due to the signal contributed from all hydrogen peroxide molecules. Cholesterol was detected near the physiological concentrations ranging from 100?mg/dl to 400?mg/dl with the cholesterol microsensors. The results show linear relation between cholesterol concentration and the conductivity change of the PANI. The microsensor showed no response to cholesterol when the PANI was standalone without cholesterol oxidase immobilized, indicating that the enzymatic reaction is required for cholesterol detection. The simple process of the sensor fabrication allows the sensor to be cost-effective and disposable usage. This electronic cholesterol microsensor is promising for point-of-care health monitoring in cholesterol level with low cost and fast response.

  20. Fabrication and characterization of junctionless carbon nanotube field effect transistor for cholesterol detection

    SciTech Connect (OSTI)

    Barik, Md. Abdul, E-mail: abdulnpl@gmail.com; Dutta, Jiten Ch. [Department of Electronics and Communication Engineering, Tezpur University, Napaam, Tezpur, Assam 784028 (India)

    2014-08-04

    We have reported fabrication and characterization of polyaniline (PANI)/zinc oxide (ZnO) membrane-based junctionless carbon nanotube field effect transistor deposited on indium tin oxide glass plate for the detection of cholesterol (0.5–22.2?mM). Cholesterol oxidase (ChOx) has been immobilized on the PANI/ZnO membrane by physical adsorption technique. Electrical response has been recorded using digital multimeter (Agilent 3458A) in the presence of phosphate buffer saline of 50?mM, pH 7.0, and 0.9% NaCl contained in a glass pot. The results of response studies for cholesterol reveal linearity as 0.5–16.6?mM and improved sensitivity of 60?mV/decade in good agreement with Nernstian limit ?59.2?mV/decade. The life time of this sensor has been found up to 5 months and response time of 1?s. The limit of detection with regression coefficient (r) ? 0.998 and Michaelis-Menten constant (K{sub m}) were found to be ?0.25 and 1.4?mM, respectively, indicating high affinity of ChOx to cholesterol. The results obtained in this work show negligible interference with glucose and urea.

  1. Silicon Oxynitride Thin Film Barriers for PV Packaging (Poster)

    SciTech Connect (OSTI)

    del Cueto, J. A.; Glick, S. H.; Terwilliger, K. M.; Jorgensen, G. J.; Pankow, J. W.; Keyes, B. M.; Gedvilas, L. M.; Pern, F. J.

    2006-10-03

    Dielectric, adhesion-promoting, moisture barriers comprised of silicon oxynitride thin film materials (SiOxNy with various material stoichiometric compositions x,y) were applied to: 1) bare and pre-coated soda-lime silicate glass (coated with transparent conductive oxide SnO2:F and/or aluminum), and polymer substrates (polyethylene terephthalate, PET, or polyethylene napthalate, PEN); plus 2) pre- deposited photovoltaic (PV) cells and mini-modules consisting of amorphous silicon (a-Si) and copper indium gallium diselenide (CIGS) thin-film PV technologies. We used plasma enhanced chemical vapor deposition (PECVD) process with dilute silane, nitrogen, and nitrous oxide/oxygen gas mixtures in a low-power (< or = 10 milliW per cm2) RF discharge at ~ 0.2 Torr pressure, and low substrate temperatures < or = 100(degrees)C, over deposition areas ~ 1000 cm2. Barrier properties of the resulting PV cells and coated-glass packaging structures were studied with subsequent stressing in damp-heat exposure at 85(degrees)C/85% RH. Preliminary results on PV cells and coated glass indicate the palpable benefits of the barriers in mitigating moisture intrusion and degradation of the underlying structures using SiOxNy coatings with thicknesses in the range of 100-200 nm.

  2. A Full Year's Chandra Exposure on SDSS Quasars from the Chandra Multiwavelength Project

    E-Print Network [OSTI]

    Paul J. Green; T. L. Aldcroft; G. T. Richards; W. A. Barkhouse; A. Constantin; D. Haggard; M. Karovska; D. -W. Kim; M. Kim; A. Vikhlinin; A. Mossman; J. D. Silverman; S. F. Anderson; V. Kashyap; B. J. Wilkes; H. Tananbaum

    2008-09-05

    We study the spectral energy distributions and evolution of a large sample of optically selected quasars from the Sloan Digital Sky Survey (SDSS) that were observed in 323 Chandra images analyzed by the Chandra Multiwavelength Project (ChaMP). Our highest-confidence matched sample includes 1135 X-ray detected quasars in the redshift range 0.23 QSOs detected, we find no evidence for evolution out to z~5 for either the X-ray photon index Gamma or for the ratio of optical/UV to X-ray flux alpha_ox. About 10% of detected QSOs are obscured (Nh>1E22), but the fraction might reach ~1/3 if most non-detections are absorbed. We confirm a significant correlation between alpha_ox and optical luminosity, but it flattens or disappears for fainter AGN alone. Gamma hardens significantly both towards higher X-ray luminosity, and for relatively X-ray loud quasars. These trends may represent a relative increase in non-thermal X-ray emission, and our findings thereby strengthen analogies between Galactic black hole binaries and AGN.

  3. Evidence Against BALS in the X-ray Bright QSO PG1416-129

    E-Print Network [OSTI]

    Paul J. Green; Thomas L. Aldcroft; Smita Mathur; Norbert Schartel

    1997-02-24

    Recent results from the ROSAT All Sky Survey, and from deep ROSAT pointings reveal that broad absorption line quasars (BALQSOs) are weak in the soft X-ray bandpass (with optical-to-X-ray spectral slope alpha_{ox}>1.8) in comparison to QSOs with normal OUV spectra (mean alpha_{ox}=1.4). One glaring exception appeared to be the nearby BALQSO PG1416-129, which is a bright ROSAT source showing no evidence for intrinsic soft X-ray absorption. We present here our new HST FOS spectrum of PG1416-129, in which we find no evidence for BALs. We show that the features resulting in the original BAL classification, based on IUE spectra, were probably spurious. On the basis of UV, X-ray and optical evidence, we conclude that PG1416-129, is not now, and has never been a BALQSO. Our result suggests that weak soft X-ray emission is a defining characteristic of true BALQSOs. If BALQSOs indeed harbor normal intrinsic spectral energy distributions, their observed soft X-ray weakness is most likely the result of absorption. The ubiquitous occurrence of weak soft X-ray emission with UV absorption (BALs) thus suggests absorbers in each energy regime that are physically associated, if not identical.

  4. Bimetallic Ni-Rh catalysts with low amounts of Rh for the steam and autothermal reforming of n-butane for fuel-cell applications.

    SciTech Connect (OSTI)

    Ferrandon, M.; Kropf, A. J.; Krause, T.; Chemical Sciences and Engineering Division

    2010-05-15

    Mono-metallic nickel and rhodium catalysts and bimetallic Ni-Rh catalysts supported on La-Al{sub 2}O{sub 3}, CeZrO{sub 2} and CeMgOx were prepared and evaluated for catalyzing the steam and autothermal reforming of n-butane. The binary Ni-Rh supported on La-Al{sub 2}O{sub 3} catalysts with low weight loading of rhodium exhibited higher H{sub 2} yields than Ni or Rh alone. The Ni-Rh/CeZrO{sub 2} catalyst exhibited higher performance and no coke formation, compared to the same metals on other supports. A NiAl{sub 2}O{sub 4} spinel phase was obtained on all Ni and Ni-Rh catalysts supported on La-Al{sub 2}O{sub 3}. The presence of rhodium stabilized the spinel phase as well as NiOx species upon reforming while Ni alone was mostly reduced into metallic species. Extended X-ray absorption fine-structure analysis showed evidence of Ni-Rh alloy during preparation and even further after an accelerated aging at 900C in a H{sub 2}/H{sub 2}O atmosphere.

  5. An In-Situ XAS Study of the Structural Changes in a CuO-CeO2/Al2O3 Catalyst during Total Oxidation of Propane

    SciTech Connect (OSTI)

    Silversmith, Geert; Poelman, Hilde; Poelman, Dirk; Gryse, Roger de; Olea, Maria; Balcaen, Veerle; Heynderickx, Philippe; Marin, Guy B.

    2007-02-02

    A CuOx-CeOx/Al2O3 catalyst was studied with in-situ transmission Cu K XAS for the total oxidation of propane as model reaction for the catalytic elimination of volatile organic compounds. The local Cu structure was determined for the catalyst as such, after pre-oxidation and after reduction with propane. The catalyst as such has a local CuO structure. No structural effect was observed upon heating in He up to 600 deg. C or after pre-oxidation at 150 deg. C. A full reduction of the Cu2+ towards metallic Cu0 occurred, when propane was fed to the catalyst. The change in local Cu structure during propane reduction was followed with a time resolution of 1 min. The {chi}(k) scans appeared as linear combinations of start and end spectra, CuO and Cu structure, respectively. However, careful examination of the XANES edge spectra indicates the presence of a small amount of additional Cu1+ species.

  6. Piano-stool lutetium amido and imido compounds supported by a constrained bis(oxazoline)cyclopentadienyl ligand

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

    Lampland, Nicole L.; Zhu, Jing; Hovey, Megan; Jana, Barun; Ellern, Arkady; Sadow, Aaron D.

    2015-06-25

    {BoMCptet}Lu(CH2Ph)2 (1; BoMCptet = MeC(OxMe2 2C5Me4; OxMe2 = 4,4-dimethyl-2-oxazoline) was prepared in 95% yield from the reaction of BoMCptetH and Lu(CH2Ph)3THF3. Compound 1 reacts with 1 or 2 equiv of H2NCH2R (R = C6H5, 1-C10H7) to give the corresponding imido complexes [{BoMCptet}LuNCH2R]2 (R = C6H5 (2a), 1-C10H7 (2b)) or amido complexes {BoMCptet}Lu(NHCH2R)2 (R = C6H5 (3a), 1-C10H7 (3b)). When isolated, the imido species are insoluble in nonprotic organic solvents. Crystallographic characterization reveals dimeric [{BoMCptet}LuNCH2(1-C10H7)]2 in the solid state. The reaction of 1 and NH3B(C6F5)3 affords crystallographically characterized {BoMCptet}Lu{NHB(C6F5)2}C6F5. This species is proposed to form via a transient lutetium imido, whichmore »undergoes C6F5 migration to the lutetium center.« less

  7. Electrical conductivity in oxygen-deficient phases of transition metal oxides from first-principles calculations.

    SciTech Connect (OSTI)

    Bondi, Robert James; Desjarlais, Michael Paul; Thompson, Aidan Patrick; Brennecka, Geoffrey L.; Marinella, Matthew

    2013-09-01

    Density-functional theory calculations, ab-initio molecular dynamics, and the Kubo-Greenwood formula are applied to predict electrical conductivity in Ta2Ox (0x5) as a function of composition, phase, and temperature, where additional focus is given to various oxidation states of the O monovacancy (VOn; n=0,1+,2+). Our calculations of DC conductivity at 300K agree well with experimental measurements taken on Ta2Ox thin films and bulk Ta2O5 powder-sintered pellets, although simulation accuracy can be improved for the most insulating, stoichiometric compositions. Our conductivity calculations and further interrogation of the O-deficient Ta2O5 electronic structure provide further theoretical basis to substantiate VO0 as a donor dopant in Ta2O5 and other metal oxides. Furthermore, this dopant-like behavior appears specific to neutral VO cases in both Ta2O5 and TiO2 and was not observed in other oxidation states. This suggests that reduction and oxidation reactions may effectively act as donor activation and deactivation mechanisms, respectively, for VO0 in transition metal oxides.

  8. High-Performance Flexible Perovskite Solar Cells by Using a Combination of Ultrasonic Spray-Coating and Low Thermal Budget Photonic Curing

    SciTech Connect (OSTI)

    Sanjib, Das; Yang, Bin; Gu, Gong; Joshi, Pooran C; Ivanov, Ilia N; Rouleau, Christopher; Aytug, Tolga; Geohegan, David B; Xiao, Kai

    2015-01-01

    Realizing the commercialization of high-performance and robust perovskite solar cells urgently requires the development of economically scalable processing techniques. Here we report a high-throughput ultrasonic spray-coating (USC) process capable of fabricating perovskite film-based solar cells on glass substrates with power conversion efficiency (PCE) as high as 13.04%. Perovskite films with high uniformity, crystallinity, and surface coverage are obtained in a single step. Moreover, we report USC processing on TiOx/ITO-coated polyethylene terephthalate (PET) substrates to realize flexible perovskite solar cells with PCE as high as 8.02% that are robust under mechanical stress. In this case, an optical curing technique was used to achieve a highly-conductive TiOx layer on flexible PET substrates for the first time. The high device performance and reliability obtained by this combination of USC processing with optical curing appears very promising for roll-to-roll manufacturing of high-efficiency, flexible perovskite solar cells.

  9. A biotemplated nickel nanostructure: Synthesis, characterization and antibacterial activity

    SciTech Connect (OSTI)

    Ashtari, Khadijeh; Fasihi, Javad; Mollania, Nasrin; Khajeh, Khosro

    2014-02-01

    Highlights: • Nickel nanostructure-encapsulated bacteria were prepared using electroless deposition. • Bacterium surface was activated by red-ox reaction of its surface amino acids. • Interfacial changes at cell surfaces were investigated using fluorescence spectroscopy. • TEM and AFM depicted morphological changes. • Antibacterial activity of nanostructure was examined against different bacteria strains. - Abstract: Nickel nanostructure-encapsulated bacteria were prepared using the electroless deposition procedure and activation of bacterium cell surface by red-ox reaction of surface amino acids. The electroless deposition step occurred in the presence of Ni(II) and dimethyl amine boran (DMAB). Interfacial changes at bacteria cell surfaces during the coating process were investigated using fluorescence spectroscopy. Fluorescence of tryptophan residues was completely quenched after the deposition of nickel onto bacteria surfaces. Transmission electron microscopy (TEM) and atomic force microscopy (AFM) depicted morphological changes on the surface of the bacterium. It was found that the Ni coated nanostructure was mechanically stable after ultrasonication for 20 min. Significant increase in surface roughness of bacteria was also observed after deposition of Ni clusters. The amount of coated Ni on the bacteria surface was calculated as 36% w/w. The antibacterial activity of fabricated nanostructure in culture media was examined against three different bacteria strains; Escherichia coli, Bacillus subtilis and Xantomonas campestris. The minimum inhibitory concentrations (MIC) were determined as 500 mg/L, 350 mg/L and 200 mg/L against bacteria, respectively.

  10. Air Brazing: A New Method of Ceramic-Ceramic and Ceramic-Metal Joining

    SciTech Connect (OSTI)

    Weil, K. Scott; Darsell, Jens T.; Kim, Jin Yong

    2011-10-01

    A new method of ceramic-ceramic and ceramic-metal joining has emerged over the past several years. Referred to as air brazing, the technique was originally designed and developed for use in fabricating high-temperature solid-state electrochemical devices such as planar SOFCs and oxygen and hydrogen concentrators. The primary advantage of air brazing is that a predominantly metallic joint can be formed directly in air without need of an inert cover gas or the use of surface reactive fluxes. The resulting bond is hermetic, offers excellent room temperature strength, and is inherently resistant to oxidation at high temperature. The key to developing a successful filler metal composition for air brazing is to identify a metal oxide wetting agent that is mutually soluble in a molten noble metal solvent. One particular oxide-metal combination that appears readily suited for this purpose is CuOx-Ag, a system originally of interest in the development of silver clad cuprate-based superconductors. Studies of the equilibrium phases studies in this system indicate that there are two invariant points in the pseudobinary CuOx-Ag phase diagram around which new braze compositions can be developed: 1) a monotectic reaction at 969±1°C, where CuO and a Ag-rich liquid L1 coexist with a second CuOx-rich liquid phase L2 at a composition of xAg/(xAg + xCu) = 0.10±0.03 Ag and 2) a eutectic reaction at 942±1°C, where CuO and Ag coexist with L1 at a composition of xAg/(xAg + xCu) = 0.99±0.005. Specifically, near-eutectic Ag-CuO filler metal compositions have shown good promise in joining electrochemically active ceramics such as yttria-stabilized zirconia, lanthanum strontium manganite, and barium strontium cobalt ferrite, as well as alumina and magnesia. More recently it has been found that various ternary additions can further improve the wetting characteristics of these filler metals, increase their potential operating temperatures, and/or increase the resulting strength of the joint strength. Here we review the basic concept of air brazing and illustrate filler metal selection and design using the Ag-CuO system as an example.

  11. Investigation of crystalline and electronic band alignment properties of GaP/Ge(111) heterostructure

    SciTech Connect (OSTI)

    Dixit, V. K.; Kumar, Shailendra; Singh, S. D.; Khamari, S. K.; Kumar, R.; Tiwari, Pragya; Sharma, T. K.; Oak, S. M. [Raja Ramanna Centre for Advanced Technology, Indore, Madhya Pradesh 452013 (India); Phase, D. M. [UGC-DAE Consortium for Scientific Research, Khandwa Road, Indore, Madhya Pradesh 452001 (India)

    2014-03-03

    Gallium phosphide (GaP) epitaxial layer and nanostructures are grown on n-Ge(111) substrates using metal organic vapour phase epitaxy. It is confirmed by high resolution x-ray diffraction measurements that the layer is highly crystalline and oriented with the coexistence of two domains, i.e., GaP(111)A and GaP(111)B, with an angle of 60° between them due to the formation of a wurtzite monolayer at the interface. The valence band offset between GaP and Ge is 0.7?±?0.1?eV as determined from the valence band onsets and from Kraut's method. A band alignment diagram for GaP/Ge/GeOx is also constructed which can be used to design monolithic optoelectronic integrated circuits.

  12. A critical study of the Boussinesq adaptation of Flamant's plane stress elasticity solution, utilizing the digital computer 

    E-Print Network [OSTI]

    Moritz, Burt Edwin

    1967-01-01

    the method developed in this thesis. Input of External Load First a load P is applied to a semi-infinite plane A-B (See Fig. 3-2) which extends downward. The stresses at points of interest, these being the points that will be insi, de...(TSCt XBCI(4)=H H COX(TBCI TBC(lll H H 5(H(TSC( vectlz& z. s+H s(N(rect '/SCI(31 5 0+H 5(tt(TeC( 78(lth)-2. 5 tt ~ )lttttsCI tle CONTI(DE Xl 0 COIIPI/4. 1 0 (6 H- 0)/15. Dx 0 Col)t I/4 I XI IXI OX I/2 ~ oo 89 11 I h 12 I 26 13 I 40 14=1 70 Tec...

  13. Mr & Mrs Vernon Wright Scholarship 

    E-Print Network [OSTI]

    Unknown

    2011-08-17

    %e nriter niehee te onseeee l4e ayyeaeiatiea ta Sr~ C E, '%Cakier, l3eaa ef the Selac@ of VooationaX %ealCkg, nnser ehaee Liroetken thin thaeie hae baca yseyaxeL? far nie cdk anL haiggaX euggaehienem ta tha fialioehag naeihann of tha..., and eheulk bo xegaixed Co 4e aQ. ihe oyoxatione in +hie@ he hae not aXxoadg aoyd. sod ekLX3 ke a mQe, ee Sar ae yoeaLM?, the elsa5eNAa ~ he xeyaized to 4e aXX oX' the neck themlaLvee~ boeenee veoatdosaL egeiceLtavaX o4noatioa ~ tsisee to 4ew4oy beth mn...

  14. The influence of curing time on the keeping quality of Bermuda onions in refrigerated storage 

    E-Print Network [OSTI]

    Mack, Harry John

    1952-01-01

    , far "r~VQS. '~a'-'0SS 00 qQSS '0IG hQW0le Syrou" '. ". h'~j. '=OXS 0 ~ 'i u Gal t'i0x . -'i 0 . ') . . i 0 . ' ~ 'SX'G'. 'Gl ' 0 ' U. '. . ?'', ' GZ SUE SS ~ ~ 0 5: (', . ':. '. J0S". . SX' ' I Qadi J. S I 0 1 ~Sl0 0 . . ' i 1' ' L0'I 0 }'0 00 S...K'-"'K l&LQBRCZ~ QZ CYr". l1. "!C T 'f~~ O' F, 7;;Z FMPXITG KiAZZTZ 9P 9~'. . ~A Q~iXQ?Q D! PWiPIGERATED FL'BEAST A . ! b. s a J. s A/i:VO" 66 SS 0 Sv'V1G . . &'C1 QQt]t'ai'&t ~/ lV~ Gg:V 3 ":. riculI;ural aaJ ', . eol sr lo 1 Voile~a of i...

  15. Geology of the Pontotoc North-Northwest area San Saba County, Texas 

    E-Print Network [OSTI]

    Chauvin, Aaron Lawrence

    1962-01-01

    T wg ttt ua&4 86uTps? 'KB?&? 3'o 8??? uv. Bqttesesdez (we leod 'g ?yd) deut vy6oyoa6 e~ uo ByoqmKB cl'f p pttQ e8'f ?$8 e~ go tlQL 8 ~ 8+%? ~8 e~ go Bd'$ p puc' se~ g@ct u fe+clo og pgagg etlg wf 'Pasn 89th Bs'QdUIOD uo+crKlgg SedoosoiMGQB 3'lcpg...' 0;foo'r wcuogn fd Tg Bugs ZSAggg t79$trSdg pwr{xoH EgsnofhszQ G . o 8 xodsz snld ssgci" I 8 ssot~ . 8&Rs+ ~6zng sggygnpsgg xnou Mlop uo'fQ'HTQGQxs trs go~ p3+u~oug rrrogj ssgd tlp28 p:3xgni30'2 Gtg dr~ ox' uo 3$7rgtj s~gggss uQNxQQ go dnaz6 uo...

  16. Module Packaging Research and Reliability: Activities and Capabilities

    SciTech Connect (OSTI)

    McMahon, T. J.; delCueto, J.; Glick, S.; Jorgensen, G.; Kempe, M.; Pern, J.; Terwilliger, K.

    2005-11-01

    Our team activities are directed at improving PV module reliability by incorporating new, more effective, and less expensive packaging materials and techniques. New and existing materials or designs are evaluated before and during accelerated environmental exposure for the following properties: (1) Adhesion and cohesion: peel strength and lap shear. (2) Electrical conductivity: surface, bulk, interface and transients. (3) Water vapor transmission: solubility and diffusivity. (4) Accelerated weathering: ultraviolet, temperature, and damp heat tests. (5) Module and cell failure diagnostics: infrared imaging, individual cell shunt characterization, coring. (6) Fabrication improvements: SiOxNy barrier coatings and enhanced wet adhesion. (7) Numerical modeling: Moisture ingress/egress, module and cell performance, and cell-to-frame leakage current. (8) Rheological properties of polymer encapsulant and sheeting materials. Specific examples are described.

  17. Module Design, Materials, and Packaging Research Team: Activities and Capabilities

    SciTech Connect (OSTI)

    McMahon, T. J.; del Cueto, J.; Glick, S.; Jorgensen, G.; Kempe, M.; Kennedy, C.; Pern, J.; Terwilliger, K

    2005-01-01

    Our team activities are directed at improving PV module reliability by incorporating new, more effective, and less expensive packaging materials and techniques. New and existing materials or designs are evaluated before and during accelerated environmental exposure for the following properties: (1) Adhesion and cohesion: peel strength and lap shear. (2) Electrical conductivity: surface, bulk, interface and transients. (3) Water vapor transmission: solubility and diffusivity. (4) Accelerated weathering: ultraviolet, temperature, and damp heat tests. (5) Module and cell failure diagnostics: infrared imaging, individual cell shunt characterization, coring. (6) Fabrication improvements: SiOxNy barrier coatings and enhanced wet adhesion. (7) Numerical modeling: Moisture ingress/egress, module and cell performance, and cell-to-frame leakage current. (8) Rheological properties of polymer encapsulant and sheeting materials. Specific examples will be described.

  18. A critical analysis of the use of population data in allotting federal-grant funds for research and extension 

    E-Print Network [OSTI]

    Adkins, William Gray

    1953-01-01

    $9th IevBX' 9, st 69. 19+~~ HN egad 99sxegs ' ox' Oge Gx the fvzB mesn9xtg? 9g 9'eunQ 9n ether' acta ghieh IgevkCg g~4p hageg ef e92ggaNiny 89'Ce 19 lg base, yes get, -ee~!~MR@ beihcxoe, it vav38 Feve ie:xeeaei ~ sR"xva af g~w' gqN g~ PRgj @6@g... the phiieaegl~~a emr2 ~ ef stats sztsaaiea ss~ 8Kp8~t Btstienai a&'tietiea Qn ozpK43tn?88y 63?HQgssa ~M GQ~ eentsetai Msk a~~a ef re~ md sponsion seemgiiahxanhs, gl~shaQ tfntsrisis UR9eh QGGX %Jith ths Q~~catiev. Qf ~ fknKIs srs tad te anhgaet9va dicsvsaioaa...

  19. A comparison of gasoline and LP-gas as a fuel for medium or small size farm tractors 

    E-Print Network [OSTI]

    Maher, Thomas Francis

    1952-01-01

    I Gasoline Fuel Consumption at the same Compression Ratio With the LP Ieae CarburCtOr Set fOr KSXlrrilm Power s e o e ~ e o ~ ~ ~ ~ ~ a ~ ~ e o ~ a o 55 Comparison of LP-Gas ancI Gasoline li"uel Consumption 8 t ths Same CQslpressiQn iiaii3 with the LP...-Gas Carburetor set for Eoonongr at ceo%i Loado ~ a o ~ s o ~ a a Comparison of LP-Gas anJ Gasoline Fuel Consulsptiozl at the salas ComprsssiQn Ratio sith t. ;s LP-Gas Carburetor set for 94/a of I'aIa~ POWSr e ~ ~ o e o o o e e a e o e e Comparison, ox LP...

  20. Accounting methods for recognition of fixed asset underdepreciation 

    E-Print Network [OSTI]

    Hidell, Richard Robinson

    1948-01-01

    and rop~t, . ac crob3?n of a rishi?g "cost of livLnp" is not, co&xfincd to t&&e ind&i?i&h&al?1? t is al'o t1&c ?ara:&oust consiWration of business tod&t1. 0 incu trial conccxns it ia cK, da&ctx- not only by incrsas'1ng "&aterial and 3;&bor co ts, ?Mc...?ss of Qcti'3n ?Jhicll will enable tho ~ant nost efficiently to perfom thc tasks ossiAned to hin ~ &1 i-n&xxvlcdgo of t!. o xc&ont, of tho postwar incxv ocec in costs 1&ill !&ox~ in undcrst?ldtni ti&e serio Jensen of lQBGPO-&ont 58 Dl'ob3AK&8 of. dopn ci...

  1. Unidentified factors, antibiotics and arsenicals in the nutrition of mature fowl 

    E-Print Network [OSTI]

    Creech, Billy Gene

    1955-01-01

    arsenic 'ls suc. ~ ss 5-nitrv&-. :q'aro~- oherJI a "scenic aczu ~nu . ~roue. lic cia hive been s ~o, ;n to stinulate ?-ro'. tn xn civic~, and tne adorner hs' teen. z eg~or- . tt-, I:. te e ', j' vs c l, 1vn & n s 0 ' ox 'al lat, i 'Ltg anu j. ncresse... ?. ro::tn xn &uilots. I ' t: i oe ~rue, it . v, i ielt ars ni&;. c acid nr, nt also y. . oduce a stir. . lation in e, ?, . . ro uct n 'ines it, iro~uce- i icreases in chic. '". , roots. Gii'ii"'i'dfi I MK iiiiil'iGl L/L' U"idJL -. . U~. G' ' Vm Ui...

  2. A consumer panel test of Texas fortified red grapefruit juice 

    E-Print Network [OSTI]

    Price, Carter

    1959-01-01

    of 1'58. Two taste . !-n. lo . !ere us?i' ? an oxf crt fin& non-evi srt taste 2! nel. The iix?ort fan?!1 ?nnioted ci' cix i?ricul+ur 3 an' ' ech!inicfll ollege of TeXaa SmplOyc . ;!!lc !lad OX?O"S" VO t&. at(~?" eX; erf enCe O"8 were Cap ?le Of' c... '. ?ET iCTEi TIAL FCF T"XAS FOFTIFIN R&X 38 67 CiiAPTER X B IHL IOGRAP HY AH '-'IX GiiAFEFRUIT JUICE CO', ~LUCIO". '. S. 74 80 Figure ', ''o. Page l. 2 ~ 3. Relationship between Index of Fading, Visual Color, and Lycopene and Carotene pie...

  3. Comparison of growth texture in round Bi2212 and flat Bi2223 wires and its relation to high critical current density development

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

    Kametani, F.; Jiang, J.; Matras, M.; Abraimov, D.; Hellstrom, E. E.; Larbalestier, D. C.

    2015-02-10

    Why Bi?Sr?CaCu?Ox (Bi2212) allows high critical current density Jc in round wires rather than only in the anisotropic tape form demanded by all other high temperature superconductors is important for future magnet applications. Here we compare the local texture of state-of-the-art Bi2212 and Bi2223 ((Bi,Pb)?Sr?Ca?Cu?O??), finding that round wire Bi2212 generates a dominant a-axis growth texture that also enforces a local biaxial texture (FWHM more »perpendicular to the tape plane without any in-plane texture. Consistent with these observations, a marked, field-increasing, field-decreasing Jc(H) hysteresis characteristic of weak-linked systems appears in Bi2223 but is absent in Bi2212 round wire. Growth-induced texture on cooling from the melt step of the Bi2212 Jc optimization process appears to be the key step in generating this highly desirable microstructure.« less

  4. Thermal-mechanical Properties of Epoxy-impregnated Bi-2212/Ag Composite

    SciTech Connect (OSTI)

    Li, Pei [Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States); Wang, Yang [Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States); Godeke, Arno [Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); Ye, Liyang [North Carolina State Univ., Raleigh, NC (United States); Flanagan, Gene [Muons Inc., Batavia, IL (United States); Shen, Tengming [Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)

    2014-11-26

    Knowledge of the thermal-mechanical properties of epoxy/superconductor/insulation composite is important for designing, fabricating, and operating epoxy impregnated high field superconducting magnets near their ultimate potentials. We report measurements of the modulus of elasticity, Poisson’s ratio, and the coefficient of thermal contraction of epoxy-impregnated composite made from the state-of-the-art powder-in-tube multifilamentary Ag/Bi2Sr2CaCu2Ox round wire at room temperature and cryogenic temperatures. Stress-strain curves of samples made from single-strand and Rutherford cables were tested under both monotonic and cyclic compressive loads, with single strands insulated using a thin TiO2 insulation coating and the Rutherford cable insulated with a braided ceramic sleeve.

  5. Magnetic and Electronic Structure study of Fe/MgO/Fe/Co Multilayer Stack Deposited by E-Beam Evaporation

    E-Print Network [OSTI]

    Jitendra Pal Singh; Sanjeev Gautam; Braj Bhusan Singh; M. Raju; S. Chaudhary; D. Kabiraj; D. Kanjilal; Jenn-Min Lee; Jin-Ming Chen; K. Asokan; Keun Hwa Chae

    2013-05-13

    Present work investigates the magnetic and electronic structure of MgO/Fe/MgO/Fe/Co/Au multilayer stack grown on Si(100) substrates by electron beam evaporation method. X-ray diffraction study depicts polycrystalline nature of the multilayers. Results obtained from vibrating sample magnetometry (VSM) and near-edge X-ray absorption fine structure spectra (NEXAFS) at Fe & Co L- and Mg & O K-edges are applied to understand the magnetic and electronic properties of this stack and its interface properties. While the spectral features of Fe L-edge spectrum recorded by surface sensitive total electron yield (TEY) mode shows the formation of FeOx at the Fe/MgO interface, the bulk sensitive total fluorescence yield (TFY), shows Fe in metallic nature. Co L-edge spectrum reveals the presence of metallic nature of cobalt in both TEY and TFY modes. Above results are well correlated with X-ray reflectometry.

  6. The pneumatic conveyor as a continuous-flow mixer 

    E-Print Network [OSTI]

    Stipe, Dennis Ray

    1964-01-01

    =~+cpc', ' 'ag 4he . ':, '. , '- ?, . de~i"af xcixing caint' out -saxss af the . j&roblsms'. invo1vsd. end':;: ', x, k yx". ~abjures . fox tctisticall3 ts, ting the degree of mixing 'OWKainsdx 1 8 l5 0 H-A P, T E-r4' l, l I T i, QJIPs~~. IFZ SSF9- 'I...? -' '. - ". ': ";:: '-'. aawpagsbls 'fg~:. g'ox, ', &9/i-Was' gj8. tboiiaan4:-be~ d " 'Ibis'ex '-. , ::;. : gaddi~ fiedlot op? patloii- iequXths. :itbot-mm . feed; be:, pea +e'seed and placed before the an&'als io'a;uinL&zw nii. :. bey 'of opec'at'o~s, ' 'we byexattions ia' glw...

  7. Thermally integrated staged methanol reformer and method

    DOE Patents [OSTI]

    Skala, Glenn William (Churchville, NY); Hart-Predmore, David James (Rochester, NY); Pettit, William Henry (Rochester, NY); Borup, Rodney Lynn (East Rochester, NY)

    2001-01-01

    A thermally integrated two-stage methanol reformer including a heat exchanger and first and second reactors colocated in a common housing in which a gaseous heat transfer medium circulates to carry heat from the heat exchanger into the reactors. The heat transfer medium comprises principally hydrogen, carbon dioxide, methanol vapor and water vapor formed in a first stage reforming reaction. A small portion of the circulating heat transfer medium is drawn off and reacted in a second stage reforming reaction which substantially completes the reaction of the methanol and water remaining in the drawn-off portion. Preferably, a PrOx reactor will be included in the housing upstream of the heat exchanger to supplement the heat provided by the heat exchanger.

  8. A photoelastic study of the stresses at the junction of the curved and straight portions of a curved-end cantilever beam 

    E-Print Network [OSTI]

    Crump, Glendon Rowe

    1961-01-01

    . 2 1. 4 1. 6 Bat1. o r/a 1, 8 2. 0 F1gure 17. Coefficients ~ and g for b/a = 2 ' 0. 31 b A GO ' 60 20 (~) 0 20 -60 i0 1, 2 1, 3 1 ~ + Ratio r/a Figure 18. Coefficients ~ and /9 for b/a = 1. 5. 32 stress Oy, as determined... CEIAP TER V algCIISSTON AI1D CONCLUSZOZS After all calculations had been made, curves of Ox snd 0y vere drawn as a function oi g, vhere y is the distance II from the origin A to any point on tnc section in que tion~ and h = (b-a). These curves...

  9. CO oxidation on gold-supported iron oxides: New insights into strong oxide–metal interactions

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

    Yu, Liang; Liu, Yun; Yang, Fan; Evans, Jaime; Rodriguez, José A.; Liu, Ping

    2015-07-14

    Very active FeOx–Au catalysts for CO oxidation are obtained after depositing nanoparticles of FeO, Fe3O4, and Fe2O3 on a Au(111) substrate. Neither FeO nor Fe2O3 is stable under the reaction conditions. Under an environment of CO/O2, they undergo oxidation (FeO) or reduction (Fe2O3) to yield nanoparticles of Fe3O4 that are not formed in a bulk phase. Using a combined experimental and theoretical approach, we show a strong oxide–metal interaction (SOMI) between Fe3O4 nanostructures and Au(111), which gives the oxide special properties, allows the formation of an active phase, and provides a unique interface to facilitate a catalytic reaction. This workmore »highlights the important role that the SOMI can play in enhancing the catalytic performance of the oxide component in metal–oxide catalysts.« less

  10. Short time proton dynamics in bulk ice and in porous anode solid oxide fuel cell materials

    SciTech Connect (OSTI)

    Basoli, Francesco; Senesi, Roberto; Kolesnikov, Alexander I; Licoccia, Silvia

    2014-01-01

    Oxygen reduction and incorporation into solid electrolytes and the reverse reaction of oxygen evolution play a cru-cial role in Solid Oxide Fuel Cell (SOFC) applications. However a detailed un derstanding of the kinetics of the cor-responding reactions, i.e. on reaction mechanisms, rate limiting steps, reaction paths, electrocatalytic role of materials, is still missing. These include a thorough characterization of the binding potentials experienced by protons in the lattice. We report results of Inelastic Neutron Scattering (INS) measurements of the vibrational state of the protons in Ni- YSZ highly porous composites (75% to 90% ), a ceramic-metal material showing a high electrical conductivity and ther mal stability, which is known to be most effectively used as anodes for solid ox ide fuel cells. The results are compared with INS and Deep Inelastic Neutron Scattering (DINS) experiments on the proton binding states in bulk ice.

  11. Low-Luminosity Active Galactic Nuclei: Are They UV-Faint and Radio Loud?

    E-Print Network [OSTI]

    Dan Maoz

    2007-03-14

    Low-luminosity AGNs are perceived to be radio loud and devoid of a ``big blue bump'', indicating a transition from a radiatively efficient, geometrically thin, accretion disc in high-luminosity AGNs, to a geometrically thick, radiatively inefficient accretion flow at low luminosities and accretion rates. I revisit the issue of the spectral energy distributions (SEDs) of low-luminosity AGNs using recently published, high-angular-resolution data at radio, UV, and X-ray wavelengths, for a sample of 13 nearby galaxies with LINER nuclei. I show that, contrary to common wisdom, low-luminosity AGNs have significant nonstellar UV flux, and UV/X-ray luminosity ratios similar, on average, to those of Seyfert 1 nuclei ~10^4 times more luminous. The alpha_ox index that quantifies this ratio is in the range between -0.8 to -1.4, and is below the extrapolation to low luminosities of the relation between alpha_ ox and UV luminosity observed at higher luminosities. In terms of radio loudness, most of the LINERs are indeed radio loud (or sometimes even ``super radio loud'') based on their radio/UV luminosity ratios, when compared to the most luminous quasars. However, the entire distribution of radio loudness has been shown to shift to higher radio/UV ratios at low AGN luminosities. In the context of this global shift, some LINERs (the majority) can be considered radio quiet, and some (from among those with black hole masses >~10^8.5 M_sun) are radio loud. The SEDs of low-luminosity (~10^40 erg/s) AGNs are thus quite similar to those of Seyferts up to luminosities of ~10^44erg/s, and there is no evidence for a sharp change in the SEDs at the lowest luminosities. Thin AGN accretion discs may therefore persist at low accretion rates, in analogy to some recent findings for Galactic stellar-mass accreting black holes.

  12. A Chandra Survey of Broad Absorption Line Quasars

    E-Print Network [OSTI]

    Paul J. Green; Thomas L. Aldcroft; Smita Mathur; Belinda J. Wilkes; Martin Elvis

    2001-05-21

    We have carried out a survey with the Chandra X-ray Observatory of a sample of 10 optically bright broad absorption line (BAL) QSOs. Eight out of ten sources are detected. The 6 brightest X-ray sources have only high ionization BALs (hiBALs), while the 4 faintest all show low ionization BALs (loBALs). We perform a combined spectral fit for hiBAL QSOs to determine the mean spectral parameters of this sample. We derive an underlying best-fit power-law slope Gamma=1.8+/-0.35, consistent with the mean slope for radio-quiet quasars from ASCA, but BALQSOs require a (restframe) absorbing column of 6.5e22, with a partial covering fraction of 80%. Removing the absorption component from our best-fit spectral model yields a range of alphaOX from 1.55 to 2.28. All 6 hiBAL QSOs have de-absorbed X-ray emission consistent with non-BAL QSOs of similar luminosity. The spectral energy distributions of the hiBAL QSOs - both the underlying power-law slope and alphaOX provide the first conclusive evidence that BALQSOs have appeared to be X-ray weak because of intrinsic absorption, and that their underlying emission is consistent with non-BAL QSOs. By contrast, removal of the best-fit absorption column detected in the hiBAL QSOs still leaves the 4 loBAL QSOs as unusually X-ray faint for their optical luminosities.

  13. Serendipitous AGN in the XMM-Newton fields of Markarian 205 and QSO 0130-403

    E-Print Network [OSTI]

    K. L. Page; M. J. L. Turner; J. N. Reeves; P. T. O'Brien; S. Sembay

    2002-10-07

    The X-ray spectra of serendipitously observed AGN in the XMM-Newton fields of Mrk 205 and QSO 0130-403 are analysed. The sample consists of 23 objects, none of which is detected at radio frequencies, with a median X-ray luminosity of ~ 4 x 10^44 erg s^-1 and redshifts ranging from ~0.1 to just over 3. The mean photon index was found to be 1.89 +/- 0.04. In contrast to past ASCA and ROSAT observations of high-redshift radio-loud quasars, we find little evidence for excess intrinsic absorption in these radio-quiet objects, with only three sources requiring a column density in excess of the Galactic value. Comparing the measured spectral indices over the redshift range, we also find there is no X-ray spectral evolution of QSOs with time, up to redshift 3. Within the sample there is no evidence for evolution of the optical to X-ray spectral index, alpha-ox, with redshift, the mean value being -1.66 +/- 0.04. However, upon comparing the values from the Bright Quasar Survey at low redshift (z 4), a slight steepening of alpha-ox is noted for the more distant objects. In most of the sources there is no significant requirement for a soft excess, although a weak thermal component ( 3 keV, QSO rest frame) for the sample as a whole. This is consistent with the presence of a Compton reflection component in these radio-quiet AGN, with the scattering medium (such as an accretion disc or molecular torus) occupying a solid angle of 2 pi steradians to the X-ray source.

  14. Hydroxylation of p-substituted phenols by tyrosinase: Further insight into the mechanism of tyrosinase activity

    SciTech Connect (OSTI)

    Munoz-Munoz, Jose Luis; Berna, Jose; Garcia-Molina, Maria del Mar; Garcia-Molina, Francisco; Garcia-Ruiz, Pedro Antonio; Varon, Ramon [Departamento de Quimica-Fisica, Escuela de Ingenieros Industriales de Albacete, Universidad de Castilla la Mancha, Avda. Espana s and others

    2012-07-27

    Highlights: Black-Right-Pointing-Pointer The action the copper complexes and tyrosinase on phenols is equivalent. Black-Right-Pointing-Pointer Isotope effect showed that nucleophilic attack to copper atom may be the slower step. Black-Right-Pointing-Pointer The value of {rho} (Hammett constant) supports an electrophilic aromatic substitution. Black-Right-Pointing-Pointer Data obtained in steady state pH 7 conditions support the mechanism of Scheme 1SM. -- Abstract: A study of the monophenolase activity of tyrosinase by measuring the steady state rate with a group of p-substituted monophenols provides the following kinetic information: k{sub cat}{sup m} and the Michaelis constant, K{sub M}{sup m}. Analysis of these data taking into account chemical shifts of the carbon atom supporting the hydroxyl group ({delta}) and {sigma}{sub p}{sup +}, enables a mechanism to be proposed for the transformation of monophenols into o-diphenols, in which the first step is a nucleophilic attack on the copper atom on the form E{sub ox} (attack of the oxygen of the hydroxyl group of C-1 on the copper atom) followed by an electrophilic attack (attack of the hydroperoxide group on the ortho position with respect to the hydroxyl group of the benzene ring, electrophilic aromatic substitution with a reaction constant {rho} of -1.75). These steps show the same dependency on the electronic effect of the substituent groups in C-4. Furthermore, a study of a solvent deuterium isotope effect on the oxidation of monophenols by tyrosinase points to an appreciable isotopic effect. In a proton inventory study with a series of p-substituted phenols, the representation of k{sub cat}{sup f{sub n}}/k{sub cat}{sup f{sub 0}} against n (atom fractions of deuterium), where k{sub cat}{sup f{sub n}} is the catalytic constant for a molar fraction of deuterium (n) and k{sub cat}{sup f{sub 0}} is the corresponding kinetic parameter in a water solution, was linear for all substrates. These results indicate that only one of the proton transfer processes from the hydroxyl groups involved the catalytic cycle is responsible for the isotope effects. We suggest that this step is the proton transfer from the hydroxyl group of C-1 to the peroxide of the oxytyrosinase form (E{sub ox}). After the nucleophilic attack, the incorporation of the oxygen in the benzene ring occurs by means of an electrophilic aromatic substitution mechanism in which there is no isotopic effect.

  15. The Superconductors That Magnets Really Want: What Stands in the Way? (Superconductors for Accelerator Use: What Next and How Close is the Ideal Conductor?)

    ScienceCinema (OSTI)

    Larbalestier, David [National High Magnetic Field Laboratory] [Florida State University, Tallahassee, Florida, United States

    2010-01-08

    There are over 5000 superconducting materials but only about 5 have ever been useful for applications in magnets, while HEP, which has been so vital for the development of superconducting magnet technology has made virtually every magnet out of just one, the simple bcc alloy Nb-Ti with Tc of 9 K and upper critical field ~ 14T (at 2K). Significant demonstrations of the capability of the brittle intermetallic Nb3Sn have shown that fields of more than 15 T can be generated in dipole form. But Nb-Ti and Nb3Sn are staid, conventional superconductors, far from the cutting edge of superconducting science research where cuprates like YBa2Cu3O7-x and Bi2Sr2CaCu2Ox remain at the scientific forefront and in 2008 were joined by the recently discovered Fe-As pnictide superconductors. What could it mean to have materials for magnets with 10 times the Tc of Nb-Ti (90-120 K) and 3 or more times the critical field (100-240 T)? One enormous barrier is that higher Tc so far always means more complexity and a more localized superconducting interaction which is sensitive to local loss of superconductivity. The issue that has made the cuprate high temperature superconductors so hard to apply is that grain boundaries which form a 3D network in any practical wire form, easily acquire degraded superconducting properties. But conductors can now be made with extreme texture so that grain boundaries are minimized. Moreover almost practical conductors of Bi2Sr2CaCu2Ox and YBa2Cu3O7-x are now are in production and in late 2008 we were, at the Magnet Lab, able to make small solenoids operating at high current density in fields of 32 and almost 34 T respectively. Within the HEP community, there is enthusiasm to embrace HTS conductors for new very high field machines that could, like the Muon Collider, use fields of 30-50 T. In my talk I would like to explore the underlying science controlling such potential applications.

  16. Oxynitride Thin Film Barriers for PV Packaging

    SciTech Connect (OSTI)

    Glick, S. H.; delCueto, J. A.; Terwilliger, K. M.; Jorgensen, G. J.; Pankow, J. W.; Keyes, B. M.; Gedvilas, L. M.; Pern, F. J.

    2005-11-01

    Dielectric thin-film barrier and adhesion-promoting layers consisting of silicon oxynitride materials (SiOxNy, with various stoichiometry) were investigated. For process development, films were applied to glass (TCO, conductive SnO2:F; or soda-lime), polymer (PET, polyethylene terephthalate), aluminized soda-lime glass, or PV cell (a-Si, CIGS) substrates. Design strategy employed de-minimus hazard criteria to facilitate industrial adoption and reduce implementation costs for PV manufacturers or suppliers. A restricted process window was explored using dilute compressed gases (3% silane, 14% nitrous oxide, 23% oxygen) in nitrogen (or former mixtures, and 11.45% oxygen mix in helium and/or 99.999% helium dilution) with a worst-case flammable and non-corrosive hazard classification. Method employed low radio frequency (RF) power, less than or equal to 3 milliwatts per cm2, and low substrate temperatures, less than or equal to 100 deg C, over deposition areas less than or equal to 1000 cm2. Select material properties for barrier film thickness (profilometer), composition (XPS/FTIR), optical (refractive index, %T and %R), mechanical peel strength and WVTR barrier performance are presented.

  17. Manganese oxide/titania materials for removal of NOx and elemental mercury from flue gas

    SciTech Connect (OSTI)

    Lei Ji; Pavani M. Sreekanth; Panagiotis G. Smirniotis; Stephen W. Thiel; Neville G. Pinto [University of Cincinnati, Cincinnati, OH (United States). Department of Chemical & Materials Engineering

    2008-07-15

    A novel catalyst for low temperature selective catalytic reduction (SCR) using CO as reductant, MnOx supported on titania, has been shown to be effective for both elemental mercury capture and low temperature SCR. In low temperature (200{sup o}C) SCR trials using an industrially relevant space velocity (50 000 h{sup -1}) and oxygen concentration (2 vol %), nearly quantitative reduction of NOx was obtained using CO as the reductant. Fresh catalyst used as an adsorbent for elemental mercury from an inert atmosphere showed remarkable mercury capture capacity, as high as 17.4 mg/g at 200{sup o}C. The catalyst effectively captured elemental mercury after use in NOx reduction. Mercury capture efficiency was not affected by the presence of water vapor. Mercury capacity was reduced in the presence of SO{sub 2}. Manganese loading and bed temperature, which influence surface oxide composition, were found to be important factors for mercury capture. X-ray photoelectron spectroscopy (XPS) results reveal that the mercury is present in its oxidized form (HgO) in spent catalyst, indicating the participation of lattice oxygen of the catalyst in the reaction. These results suggest that a single-step process integrating low temperature SCR and mercury capture from flue gas might be feasible. 42 refs., 10 figs., 2 tabs.

  18. The Reddest DR3 SDSS/XMM Quasars

    E-Print Network [OSTI]

    Monica Young; Martin Elvis; Guido Risaliti

    2008-09-10

    We have cross-correlated the SDSS DR3 Schneider et al. (2005) quasar catalog with the XMM-Newton archive. Color and redshift selections (g - r > 0.5 and 0.9 z =10,500 km s^{-1}), moderately flat, but unabsorbed X-ray spectra =1.66+/-0.08), and low accretion rates (mdot/mdot_{Edd}} ~ 0.01). We suggest low accretion rates as a possible physical explanation for quasars with intrinsically red optical continua. We find that 8 of 17 quasars can be classified as dust-reddened. Three of these have upper-limits on the absorption column from X-ray spectral fits of N_H = 3-13 x 10^{22} cm^2, while the other five quasars must be absorbed by at least N_H = 10^{23} cm^2 in order to be consistent with a comparably selected alpha_{ox}-l_{uv} distribution. Two objects in the sample are unclassified.

  19. DNA nanotechnology: understanding and optimisation through simulation

    E-Print Network [OSTI]

    Thomas E. Ouldridge

    2014-11-07

    DNA nanotechnology promises to provide controllable self-assembly on the nanoscale, allowing for the design of static structures, dynamic machines and computational architectures. In this article I review the state-of-the art of DNA nanotechnology, highlighting the need for a more detailed understanding of the key processes, both in terms of theoretical modelling and experimental characterisation. I then consider coarse-grained models of DNA, mesoscale descriptions that have the potential to provide great insight into the operation of DNA nanotechnology if they are well designed. In particular, I discuss a number of nanotechnological systems that have been studied with oxDNA, a recently developed coarse-grained model, highlighting the subtle interplay of kinetic, thermodynamic and mechanical factors that can determine behaviour. Finally, new results highlighting the importance of mechanical tension in the operation of a two-footed walker are presented, demonstrating that recovery from an unintended `overstepped' configuration can be accelerated by three to four orders of magnitude by application of a moderate tension to the walker's track. More generally, the walker illustrates the possibility of biasing strand-displacement processes to affect the overall rate.

  20. Pseudo-capacitor device for aqueous electrolytes

    DOE Patents [OSTI]

    Prakash, J.; Thackeray, M.M.; Dees, D.W.; Vissers, D.R.; Myles, K.M.

    1998-11-24

    A pseudo-capacitor having a high energy storage capacity develops a double layer capacitance as well as a Faradaic or battery-like redox reaction, also referred to as pseudo-capacitance. The Faradaic reaction gives rise to a capacitance much greater than that of the typical ruthenate oxide ultracapacitor which develops only charge separation-based double layer capacitance. The capacitor employs a lead and/or bismuth/ruthenate and/or iridium system having the formula A{sub 2}[B{sub 2{minus}x}Pb{sub x}]O{sub 7{minus}y}, where A=Pb, Bi, and B=Ru, Ir, and O{<=}1 and O

  1. Broad Temperature Pinning Study of 15 mol.% Zr-Added (Gd, Y)-Ba-Cu-O MOCVD Coated Conductors

    SciTech Connect (OSTI)

    Xu, AX; Khatri, N; Liu, YH; Majkic, G; Galstyan, E; Selvamanickam, V; Chen, YM; Lei, CH; Abraimov, D; Hu, XB; Jaroszynski, J; Larbalestier, D

    2015-06-01

    BaZrO3 (BZO) nanocolumns have long been shown to be very effective for raising the pinning force F-p of REBa2Cu3Ox (REBCO, where RE = rare earth) films at high temperatures and recently at low temperatures too. We have successfully incorporated a high density of BZO nanorods into metal organic chemical vapor deposited (MOCVD) REBCO coated conductors via Zr addition. We found that, compared to the 7.5% Zr-added coated conductor, dense BZO nanorod arrays in the 15% Zr-added conductor are effective over the whole temperature range from 77 K down to 4.2 K. We attribute the substantially enhanced J(c) at 30 K to the weak uncorrelated pinning as well as the strong correlated pinning. Meanwhile, by tripling the REBCO layer thickness to similar to 2.8 mu m, the engineering critical current density J(e) at 30 K exceeds J(e) of optimized Nb-Ti wires at 4.2 K.

  2. A comparison of yellow corn and three sorghum grains with different endosperm types for growing-finishing swine 

    E-Print Network [OSTI]

    Copelin, Johnny Landon

    1973-01-01

    1, 1' SVI)'ill, I. . LC ~ f 0 't&Q &vX'", Cl'L~Bf. 6 CG33&. '&'f~ Qf 78?hf8 A6~&( Ull:i~(B~:83?6$~ LQ pc3f ~~'l kQ, tVI'fL1ltMRAf' Gf tt'8 769Vc). "8K&kli, "f~C fOX f 48 86gT68 6"' 51~%8 t. HRJ, VP S~ P?WbVCB (C48%?RSB Gf' CA&SMEf. t 'CS.... !!r. ' adv . nta?c . '. i fl cd . I'fr? c I ency foe & orn ovc- I li 1 v. !. i, , "c r I t (e -;, : @ha!sr rl I cr . . 1!. ini; he so nnn I;!-at. ! 'I. ? Ls r dail;: fc. i d . '. ", L: ?. r- c~d &1 1 ' Iv?cici (1 hi?lt(st for I I e N-v c!1 et! i...

  3. Uniform 2 nm gold nanoparticles supported on iron oxides as active catalysts for CO oxidation reaction: Structure-activity relationship

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

    Guo, Yu; Senanayake, Sanjaya; Gu, Dong; Jin, Zhao; Du, Pei -Pei; Si, Rui; Xu, Wen -Qian; Huang, Yu -Ying; Tao, Jing; Song, Qi -Sheng; et al

    2015-01-12

    Uniform Au nanoparticles (~2 nm) with narrow size-distribution (standard deviation: 0.5–0.6 nm) supported on both hydroxylated (Fe_OH) and dehydrated iron oxide (Fe_O) have been prepared by either deposition-precipitation (DP) or colloidal-deposition (CD) methods. Different structural and textural characterizations were applied to the dried, calcined and used gold-iron oxide samples. The transmission electron microscopy (TEM) and high-resolution TEM (HRTEM) described the high homogeneity in the supported Au nanoparticles. The ex-situ and in-situ X-ray absorption fine structure (XAFS) characterization monitored the electronic and short-range local structure of active gold species. The synchrotron-based in-situ X-ray diffraction (XRD), together with the corresponding temperature-programmed reductionmore »by hydrogen (H?-TPR), indicated a structural evolution of the iron-oxide supports, correlating to their reducibility. An inverse order of catalytic activity between DP (Au/Fe_OH Au/Fe_O) was observed. Effective gold-support interaction results in a high activity for gold nanoparticles, locally generated by the sintering of dispersed Au atoms on the oxide support in the DP synthesis, while a hydroxylated surface favors the reactivity of externally introduced Au nanoparticles on Fe_OH support for the CD approach. This work reveals why differences in the synthetic protocol translate to differences in the catalytic performance of Au/FeOx catalysts with very similar structural characteristics in CO oxidation.« less

  4. Acid Strength and Bifunctional Catalytic Behavior of Alloys Comprised of Noble Metals and Oxophilic Metal Promoters

    SciTech Connect (OSTI)

    Hibbitts, David D.; Tan, Qiaohua; Neurock, Matthew

    2014-06-01

    The promotion of metal catalysts with partially oxidized oxophilic MOx species, such as ReOx-promoted Rh, has been demonstrated to produce Brønsted acid sites that can promote hydrogenolysis of oxygenate intermediates such as those found in biomass-derived species. A wide variety of alloy compositions and structures are examined in this work to investigate strongly acidic promoters by using DFT-calculated deprotonation energies (DPE) as a measure of acid strength. Sites with the highest acid strength had DPE less than 1100 kJ mol-1, similar to DPE values of heteropolyacids or acid-containing zeolites, and were found on alloys composed of an oxophilic metal (such as Re or W) with a noble metal (such as Rh or Pt). NH3 adsorbs more strongly to sites with increasing acid strength and the activation barriers for acid-catalyzed ring opening of a furan ring decrease with increasing acid strength, which was also shown to be stronger for OH acid sites bound to multiple oxophilic metal atoms in a three-fold configuration rather than OH sites adsorbed in an atop configuration on one oxophilic metal, indicating that small MOx clusters may yield sites with the highest acid strength.

  5. Empirical links between XRB and AGN accretion using the complete z < 0.4 spectroscopic CSC/SDSS catalog

    SciTech Connect (OSTI)

    Trichas, Markos [EADS Astrium, Gunnels Wood Road, Stevenage, Hertfordshire SG1 2AS (United Kingdom); Green, Paul J.; Aldcroft, Tom; Sobolewska, Malgosia; Kim, Dong-Woo [Harvard-Smithsonian Center for Astrophysics, Cambridge, MA 02138 (United States); Constantin, Anca [Department of Physics and Astronomy, James Madison University, PHCH, Harrisonburg, VA 22807 (United States); Kalfountzou, Eleni [Center for Astrophysics, Science and Technology Research Institute, University of Hertfordshire, Hatfield AL10 9AB (United Kingdom); Hyde, Ashley K. [Astrophysics Group, Imperial College London, London SW7 2AZ (United Kingdom); Zhou, Hongyan [Center for Astrophysics, University of Science and Technology of China, Hefei 230026 (China); Haggard, Daryl [Center for Interdisciplinary Exploration and Research in Astrophysics, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208 (United States); Kelly, Brandon C., E-mail: markos.trichas@astrium.eads.net [Department of Physics, Broida Hall, University of California, Santa Barbara, CA 93107 (United States)

    2013-12-01

    Striking similarities have been seen between accretion signatures of Galactic X-ray binary (XRB) systems and active galactic nuclei (AGNs). XRB spectral states show a V-shaped correlation between X-ray spectral hardness and Eddington ratio as they vary, and some AGN samples reveal a similar trend, implying analogous processes at vastly larger masses and timescales. To further investigate the analogies, we have matched 617 sources from the Chandra Source Catalog to Sloan Digital Sky Survey spectroscopy, and uniformly measured both X-ray and optical spectral characteristics across a broad range of AGN and galaxy types. We provide useful tabulations of X-ray spectral slope for broad- and narrow-line AGNs, star-forming and passive galaxies, and composite systems, also updating relationships between optical (H? and [O III]) line emission and X-ray luminosity. We further fit broadband spectral energy distributions with a variety of templates to estimate bolometric luminosity. Our results confirm a significant trend in AGNs between X-ray spectral hardness and Eddington ratio expressed in X-ray luminosity, albeit with significant dispersion. The trend is not significant when expressed in the full bolometric or template-estimated AGN luminosity. We also confirm a relationship between the X-ray/optical spectral slope ?{sub ox} and Eddington ratio, but it may not follow the trend predicted by analogy with XRB accretion states.

  6. Ultrafast nanolaser device for detecting cancer in a single live cell.

    SciTech Connect (OSTI)

    Gourley, Paul Lee; McDonald, Anthony Eugene

    2007-11-01

    Emerging BioMicroNanotechnologies have the potential to provide accurate, realtime, high throughput screening of live tumor cells without invasive chemical reagents when coupled with ultrafast laser methods. These optically based methods are critical to advancing early detection, diagnosis, and treatment of disease. The first year goals of this project are to develop a laser-based imaging system integrated with an in- vitro, live-cell, micro-culture to study mammalian cells under controlled conditions. In the second year, the system will be used to elucidate the morphology and distribution of mitochondria in the normal cell respiration state and in the disease state for normal and disease states of the cell. In this work we designed and built an in-vitro, live-cell culture microsystem to study mammalian cells under controlled conditions of pH, temp, CO2, Ox, humidity, on engineered material surfaces. We demonstrated viability of cell culture in the microsystem by showing that cells retain healthy growth rates, exhibit normal morphology, and grow to confluence without blebbing or other adverse influences of the material surfaces. We also demonstrated the feasibility of integrating the culture microsystem with laser-imaging and performed nanolaser flow spectrocytometry to carry out analysis of the cells isolated mitochondria.

  7. The effect of Fe-Rh alloying on CO hydrogenation to C2+ oxygenates

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

    Palomino, Robert; Magee, Joseph W.; Llorca, Jordi; Senanayake, Sanjaya D.; White, Michael G.

    2015-05-20

    A combination of reactivity and structural studies using X-ray diffraction (XRD), pair distribution function (PDF), and transmission electron microscopy (TEM) was used to identify the active phases of Fe-modified Rh/TiO2 catalysts for the synthesis of ethanol and other C2+ oxygenates from CO hydrogenation. XRD and TEM confirm the existence of Fe–Rh alloys for catalyst with 1–7 wt% Fe and ~2 wt% Rh. Rietveld refinements show that FeRh alloy content increases with Fe loading up to ~4 wt%, beyond which segregation to metallic Fe becomes favored over alloy formation. Catalysts that contain Fe metal after reduction exhibit some carburization as evidencedmore »by the formation of small amounts of Fe3C during CO hydrogenation. Analysis of the total Fe content of the catalysts also suggests the presence of FeOx also increased under reaction conditions. Reactivity studies show that enhancement of ethanol selectivity with Fe loading is accompanied by a significant drop in CO conversion. Comparison of the XRD phase analyses with selectivity suggests that higher ethanol selectivity is correlated with the presence of Fe–Rh alloy phases. As a result, the interface between Fe and Rh serves to enhance the selectivity of ethanol, but suppresses the activity of the catalyst which is attributed to the blocking or modifying of Rh active sites.« less

  8. A series of Cd(II) complexes with {pi}-{pi} stacking and hydrogen bonding interactions: Structural diversities by varying the ligands

    SciTech Connect (OSTI)

    Wang Xiuli; Zhang Jinxia; Liu Guocheng; Lin Hongyan

    2011-02-15

    Seven new Cd(II) complexes consisting of different phenanthroline derivatives and organic acid ligands, formulated as [Cd(PIP){sub 2}(dnba){sub 2}] (1), [Cd(PIP)(ox)].H{sub 2}O (2), [Cd(PIP)(1,4-bdc)(H{sub 2}O)].4H{sub 2}O (3), [Cd(3-PIP){sub 2}(H{sub 2}O){sub 2}].4H{sub 2}O (4), [Cd{sub 2}(3-PIP){sub 4}(4,4'-bpdc)(H{sub 2}O){sub 2}].5H{sub 2}O (5), [Cd(3-PIP)(nip)(H{sub 2}O)].H{sub 2}O (6), [Cd{sub 2}(TIP){sub 4}(4,4'-bpdc)(H{sub 2}O){sub 2}].3H{sub 2}O (7) (PIP=2-phenylimidazo[4,5-f]1,10-phenanthroline, 3-PIP=2-(3-pyridyl)imidazo[4,5-f]1,10-phenanthroline, TIP=2-(2-thienyl)imidazo[4,5-f]1,10-phenanthroline, Hdnba=3,5-dinitrobenzoic acid, H{sub 2}ox=oxalic acid, 1,4-H{sub 2}bdc=benzene-1,4-dicarboxylic acid, 4,4'-H{sub 2}bpdc=biphenyl-4,4'-dicarboxylic acid, H{sub 2}nip=5-nitroisophthalic acid) have been synthesized under hydrothermal conditions. Complexes 1 and 4 possess mononuclear structures; complexes 5 and 7 are isostructural and have dinuclear structures; complexes 2 and 3 feature 1D chain structures; complex 6 contains 1D double chain, which are further extended to a 3D supramolecular structure by {pi}-{pi} stacking and hydrogen bonding interactions. The N-donor ligands with extended {pi}-system and organic acid ligands play a crucial role in the formation of the final supramolecular frameworks. Moreover, thermal properties and fluorescence of 1-7 are also investigated. -- Graphical abstract: Seven new supramolecular architectures have been successfully isolated under hydrothermal conditions by reactions of different phen derivatives and Cd(II) salts together with organic carboxylate anions auxiliary ligands. Display Omitted Research highlights: {yields} Complexes 1-7 are 0D or 1D polymeric structure, the {pi}-{pi} stacking and H-bonding interactions extend the complexes into 3D supramolecular network. To our knowledge, systematic study on {pi}-{pi} stacking and H-bonding interactions in cadmium(II) complexes are still limited. {yields} The structural differences among the title complexes indicate the importance of N-donor chelating ligands for the creation of molecular architectures. {yields} The thermal and fluorescence properties of title complexes have also been reported.

  9. SECA Coal-Based Systems - LGFCS

    SciTech Connect (OSTI)

    Goettler, Richard

    2013-08-01

    LGFCS is developing an integrated planar (IP) SOFC technology for mega-watt scale power generation including the potential for use in highly efficient, economically competitive central generation power plant facilities fuel by coal synthesis gas. This Department of Energy Solid-State Energy Conversion Alliance (SECA) program is aimed at achieving further cell and stack technical advancements and assessing the readiness of the LGFCS SOFC stack technology to be scaled to larger-scale demonstrations in subsequent phases. LGFCS is currently in Phase 2 of the program with the Phase 1 test carrying over for completion during Phase 2. Major technical results covering the initial Phase 2 budget period include: Metric Stack Testing: 1. The Phase I metric test is a ~7.6 kW block test (2 strips) in Canton that started in March 2012 and logged 2135 hours of testing prior to an event that required the test to be shutdown. The degradation rate through 2135 hours was 0.4%/1000 hours, well below the Phase I target of 2%/1000 hours and the Phase 2 target of 1.5%/1000 hours. 2. The initial Phase II metric test consisting of 5 strips (~19 kW) was started in May 2012. At the start of the test OCV was low and stack temperatures were out of range. Shutdown and inspection revealed localized structural damage to the strips. The strips were repaired and the test restarted October 11, 2012. 3. Root cause analysis of the Phase 1 and initial Phase 2 start-up failures concluded a localized short circuit across adjacent tubes/bundles caused localized heating and thermal stress fracture of substrates. Pre-reduction of strips rather than in-situ reduction within block test rigs now provides a critical quality check prior to block testing. The strip interconnect design has been modified to avoid short circuits. Stack Design: 1. Dense ceramic strip components were redesigned to achieve common components and a uniform design for all 12 bundles of a strip while meeting a flow uniformity of greater than 95% of the mean flow for all bundles. The prior design required unique bundle components and pressure drops specifications to achieve overall strip fuel flow uniformity. 2. Slow crack growth measurements in simulated fuel environments of the MgO-MgAl2O4 substrate by ORNL reveal favorable tolerance against slow crack growth. Evidence as well of a high stress intensity threshold below which crack growth would be avoided. These findings can have very positive implications on long-term structural reliability. More testing is required, including under actual reformate fuels, to gain a deeper understanding of such time dependent reliability mechanisms. 3. A next generation (Gen2) substrate from the LGFCS supplier has been qualified. The substrate incorporates cost reductions and quality improvements. Cell Developments: 1. Subscale testing of the epsilon technology under system relevant conditions surpassed 16,000 hours with a power degradation rate of <1%/1000 hours. Key degradation mechanisms have been identified: (1) MnOx accumulation near the cathode-electrolyte interface and cathode densification (2) metals migration across the anode-ACC bilayer and general microstructure coarsening at high temperatures and peak fuel utilizations and (3) metal migration into primary interconnect (lesser mechanism) 5 2. Alternate LSM cathodes show slightly lower ASR and lesser free MnOx and chromium contamination. Long-term durability screening of three alternate cathodes is being performed. 3. Single layer anodes show very significant improvement in microstructure stability after 5000 hours testing at aggressive conditions of 925C and bundle outlet, high utilization fuel. 4. New primary interconnect designs are being tested that achieve lower ASR. Modeling performed to further balance ASR and cost through optimized designs.

  10. The RGB Sample of Intermediate BL Lacs

    E-Print Network [OSTI]

    S. A. Laurent-Muehleisen; R. I. Kollgaard; E. D. Feigelson; W. Brinkmann; J. Siebert

    1999-05-12

    Combining newly identified and previously known BL Lacs from the RASS-Green Bank (RGB) catalog, we present a sample of 127 BL Lacs, the largest ever derived from a single uniform survey. A Complete sample of 33 objects brighter than O=18.0 mag is also presented. These samples are compared to other known BL Lac samples and are generally found to exhibit properties intermediate between those of the previously disparate classes of High and Low energy peaked BL Lacs (HBLs and LBLs, respectively). This result is most dramatic in the distribution of the X-ray to radio logarithmic flux ratios, where the RGB BL Lacs are shown to peak precisely where the sharp dichotomy between the two subclasses was previously seen. The alpha_ro vs alpha_ox diagram also shows the RGB sample smoothly bridges the gap between the previously distinct subclasses of LBLs and HBLs. We also find a weak, but statistically significant correlation between the composite X-ray spectral index alpha_xox and alpha_ro. This implies that the more LBL-like RGB BL Lacs have a secondary source of X-ray emission, possibly from an inverse Compton component. We also present both the X-ray and radio logN-logS distributions for which the competing HBL/LBL unification scenarios have differing predictions. The unknown effects of the triple flux limit inherent in the RGB Complete sample makes quantitative analysis uncertain, but the characteristics of the RGB sample compare well both with results obtained from previous samples and with general theoretical predictions based on a simple Monte Carlo simulation. Our analysis indicates that the unimodal distribution of BL Lac properties found in the RGB sample likely reliably reflect the underlying population, while the bimodal distribution found in earlier studies arose primarily from observational selection effects.

  11. The Relationship Between the High Energy Continuum and Emission Lines in QSOs: A Low-Redshift Sample

    E-Print Network [OSTI]

    Paul J. Green

    1996-03-18

    Quasar emission lines are sensitive to both the luminosity and shape of the quasars' high energy continuum - primarily in the soft X-ray and the (obscured) extreme ultraviolet. We initiate the first large-scale, multi-line investigation of correlations between the QSO soft X-ray continuum and UV line emission, using an IUE/Einstein sample. We characterize the distributions of line equivalent and velocity widths (EW and FWHM) of 85 QSOs in the IUE atlas of Lanzetta et al. (1993), using a new error analysis for objective, automated line measurements, and contrast measured line parameters to the QSO continuum spectral energy distributions (SEDs). We find significant correlations between EW and UV luminosity (e.g., the well-studied Baldwin effect) for Lya, CIV, HeII, and CIII. EW(CIII) and EW(HeII) show previously unreported correlations with Lx which for CIII appears to be primary. The line ratios CIII/Lya and HeII/Lya both show strongest dependence on Lx. EW(Lya) correlates strongly with spectral slopes \\alpha_{uv} and \\alpha_{ox}, but NOT with Lx. We argue that one simple geometrical interpretation of the Baldwin effect (BEff) as a result of a distribution of disk inclinations is not plausible. The BEff weakens or disappears when line emission is correctly compared to the luminosity in the continuum bandpass relevant to its production, which suggests that the BEff is due to a change in SED with luminosity. Our prediction that no BEff relative to X-ray luminosity should be found for FeII or MgII emission lines, will be tested in a later paper, extended to a wider redshift/luminosity range.

  12. A HEURISTIC PREDICTION OF THE COSMIC EVOLUTION OF THE CO-LUMINOSITY FUNCTIONS

    SciTech Connect (OSTI)

    Obreschkow, D.; Heywood, I.; Kloeckner, H.-R.; Rawlings, S.

    2009-09-10

    We predict the emission line luminosity functions (LFs) of the first 10 rotational transitions of {sup 12}C{sup 16}O in galaxies at redshift z = 0 to z = 10. This prediction relies on a recently presented simulation of the molecular cold gas content in {approx}3 x 10{sup 7} evolving galaxies based on the Millennium Simulation. We combine this simulation with a model for the conversion between molecular mass and CO-line intensities, which incorporates the following mechanisms: (1) molecular gas is heated by the cosmic microwave background (CMB), starbursts (SBs), and active galactic nuclei (AGNs); (2) molecular clouds in dense or inclined galaxies can overlap; (3) compact gas can attain a smooth distribution in the densest part of disks; (4) CO luminosities scale with metallicity changes between galaxies; and (5) CO luminosities are always detected against the CMB. We analyze the relative importance of these effects and predict the cosmic evolution of the CO-LFs. The most notable conclusion is that the detection of regular galaxies (i.e., no AGN, no massive SB) at high z {approx}> 7 in CO emission will be dramatically hindered by the weak contrast against the CMB, in contradiction to earlier claims that CMB heating will ease the detection of high-redshift CO. The full simulation of extragalactic CO lines and the predicted CO-LFs at any redshift can be accessed online (http://s-cubed.physics.ox.ac.uk/, go to {sup S3}-SAX) and they should be useful for the modeling of CO-line surveys with future telescopes, such as the Atacama Large Millimeter/submillimeter Array or the Square Kilometre Array.

  13. Synthesis and Evaluation of Cu-SAPO-34 Catalysts for Ammonia Selective Catalytic Reduction. 1. Aqueous Solution Ion Exchange

    SciTech Connect (OSTI)

    Gao, Feng; Walter, Eric D.; Washton, Nancy M.; Szanyi, Janos; Peden, Charles HF

    2013-09-06

    SAPO-34 molecular sieves are synthesized using various structure directing agents (SDAs). Cu-SAPO-34 catalysts are prepared via aqueous solution ion exchange. Catalysts are characterized with surface area/pore volume measurements, temperature programmed reduction (TPR), electron paramagnetic resonance (EPR) and nuclear magnetic resonance (NMR) spectroscopies. Catalytic properties are examined using standard ammonia selective catalytic reduction (NH3-SCR) and ammonia oxidation reactions. During solution ion exchange, different SAPO-34 samples undergo different extent of structural damage via irreversible hydrolysis. Si content within the samples (i.e., Al-O-Si bond density) and framework stress are key factors that affect irreversible hydrolysis. Even using very dilute Cu acetate solutions, it is not possible to generate Cu-SAPO-34 samples with only isolated Cu2+ ions. Small amounts of CuOx species always coexist with isolated Cu2+ ions. Highly active and selective Cu-SAPO-34 catalysts for NH3-SCR are readily generated using this synthesis protocol, even for SAPO-34 samples that degrade substantially during solution ion exchange. High-temperature aging is found to improve the catalytic performance. This is likely due to reduction of intracrystalline mass-transfer limitations via formation of additional porosity in the highly defective SAPO-34 particles formed after ion exchange. The authors gratefully acknowledge the US Department of Energy (DOE), Office of Energy Efficiency and Renewable Energy, Office of Vehicle Technologies for the support of this work. The research described in this paper was performed at the Environmental Molecular Sciences Laboratory (EMSL), a national scientific user facility sponsored by the DOE’s Office of Biological and Environmental Research and located at Pacific Northwest National Laboratory (PNNL). PNNL is operated for the US DOE by Battelle Memorial Institute under contract number DE-AC05-76RL01830.

  14. High temperature solar selective coatings

    DOE Patents [OSTI]

    Kennedy, Cheryl E

    2014-11-25

    Improved solar collectors (40) comprising glass tubing (42) attached to bellows (44) by airtight seals (56) enclose solar absorber tubes (50) inside an annular evacuated space (54. The exterior surfaces of the solar absorber tubes (50) are coated with improved solar selective coatings {48} which provide higher absorbance, lower emittance and resistance to atmospheric oxidation at elevated temperatures. The coatings are multilayered structures comprising solar absorbent layers (26) applied to the meta surface of the absorber tubes (50), typically stainless steel, topped with antireflective Savers (28) comprising at least two layers 30, 32) of refractory metal or metalloid oxides (such as titania and silica) with substantially differing indices of refraction in adjacent layers. Optionally, at least one layer of a noble metal such as platinum can be included between some of the layers. The absorbent layers cars include cermet materials comprising particles of metal compounds is a matrix, which can contain oxides of refractory metals or metalloids such as silicon. Reflective layers within the coating layers can comprise refractory metal silicides and related compounds characterized by the formulas TiSi. Ti.sub.3SiC.sub.2, TiAlSi, TiAN and similar compounds for Zr and Hf. The titania can be characterized by the formulas TiO.sub.2, Ti.sub.3O.sub.5. TiOx or TiO.sub.xN.sub.1-x with x 0 to 1. The silica can be at least one of SiO.sub.2, SiO.sub.2x or SiO.sub.2xN.sub.1-x with x=0 to 1.

  15. Potential of Ozone Formation by the Smog Mechanism to shield the surface of the Early Earth from UV radiation?

    E-Print Network [OSTI]

    John Lee Grenfell; Barbara Stracke; Beate Patzer; Ruth Titz; Heike Rauer

    2006-09-08

    We propose that the photochemical smog mechanism produced substantial ozone (O3) in the troposphere during the Proterozoic, which contributed to ultraviolet (UV) radiation shielding hence favoured the establishment of life. The smog mechanism is well-established and is associated with pollution hazes which sometimes cover modern cities. The mechanism proceeds via the oxidation of volatile organic compounds (VOCs) such as methane (CH4) in the presence of UV radiation and nitrogen oxides (NOx). It would have been particularly favoured during the Proterozoic given the high levels of CH4 (up to 1000 ppm) recently suggested. Proterozoic UV levels on the surface of the Earth were generally higher compared with today, which would also have favoured the mechanism. On the other hand, Proterozoic O2 required in the final step of the smog mechanism to form O3 was less abundant compared with present times. Further, results are sensitive to Proterozoic NOx concentrations, which are challenging to predict, since they depend on uncertain quantities such as NOx source emissions and OH concentrations. We review NOx sources during the Proterozoic and apply a photochemical box model having methane oxidation with NOx, HOx and Ox chemistry to estimate the O3 production from the smog mechanism. Runs suggest the smog mechanism during the Proterozoic can produce about double present day ozone columns for NOx levels of 1.53 10-9 by volume mixing ratio, which was attainable according to our NOx source analysis, with 1 per-cent present atmospheric levels (PALs) of O2. Clearly, forming ozone in the troposphere is a trade-off for survivability. On the one hand harmful UV is blocked, but on the other hand ozone is a respiratory irratant, which becomes fatal at concentrations exceeding about 1 ppmv.

  16. Dissecting the steps of CO2 reduction: 2. The interaction of CO and CO2 with Pd/?-Al2O3: an in situ FTIR study

    SciTech Connect (OSTI)

    Szanyi, Janos; Kwak, Ja Hun

    2014-08-07

    Alumina supported Pd catalysts with metal loadings of 0.5, 2.5 and 10 wt% were investigated by in situ FTIR spectroscopy in order to understand the nature of adsorbed species formed during their exposure to CO2 and CO. Exposing the annealed samples to CO2 at 295 K resulted in the formation of alumina support-bound surface species only: linear adsorbed CO2, bidentate carbonates and bicarbonates. Room temperature exposure of all three samples to CO produced IR features characteristic of both ionic and metallic Pd, as well as bands we observed upon CO2 adsorption (alumina support-bound species). Low temperature (100 K) adsorption of CO on the three samples provided information about the state of Pd after oxidation and reduction. Oxidized samples contained exclusively ionic Pd, while mostly metallic Pd was present in the reduced samples. Subsequent annealing of the CO-saturated samples revealed the facile (low temperature) reduction of PdOx species by adsorbed CO. This process was evidenced by the variations in IR bands characteristic of ionic and metallic Pd-bound CO, as well as by the appearance of IR bands associated with CO2 adsorption as a function of annealing temperature. Samples containing oxidized Pd species (oxidized, annealed or reduced) always produced CO2 upon their exposure to CO, while CO2-related surface entities were observed on samples having only fully reduced (metallic) Pd. Acknowledgements: The catalyst preparation was supported by a Laboratory Directed Research and Development (LDRD) project. This work was supported by the US Department of Energy Basic Energy Sciences, Division of Chemical Sciences, Geosciences & Biosciences. Pacific Northwest National Laboratory is operated by Battelle for the US Department of Energy. JHK also acknowledges the support of this work by the 2013 Research Fund of UNIST (Ulsan National Institute of Science and Technology, Ulsan, Korea).

  17. Geothermal Target Areas in Colorado as Identified by Remote Sensing Techniques

    SciTech Connect (OSTI)

    Hussein, Khalid

    2012-02-01

    Citation Information: Originator: Earth Science &Observation Center (ESOC), CIRES, University of Colorado at Boulder Publication Date: 2012 Title: Target Areas Edition: First Publication Information: Publication Place: Earth Science & Observation Center, Cooperative Institute for Research in Environmental Science, University of Colorado, Boulder, Colorado Publisher: Earth Science &Observation Center (ESOC), CIRES, University of Colorado at Boulder Description: This layer contains the areas identified as targets of potential geothermal activity. The Criteria used to identify the target areas include: hot/warm surface exposures modeled from ASTER/Landsat satellite imagery and geological characteristics, alteration mineral commonly associated with hot springs (clays, Si, and FeOx) modeled from ASTER and Landsat data, Coloradodo Geological Survey (CGS) known thermal hot springs/wells and heat-flow data points, Colorado deep-seated fault zones, weakened basement identified from isostatic gravity data, and Colorado sedimentary and topographic characteristics Spatial Domain: Extent: Top: 4546251.530446 m Left: 151398.567298 m Right: 502919.587395 m Bottom: 4095100.068903 m Contact Information: Contact Organization: Earth Science &Observation Center (ESOC), CIRES, University of Colorado at Boulder Contact Person: Khalid Hussein Address: CIRES, Ekeley Building Earth Science & Observation Center (ESOC) 216 UCB City: Boulder State: CO Postal Code: 80309-0216 Country: USA Contact Telephone: 303-492-6782 Spatial Reference Information: Coordinate System: Universal Transverse Mercator (UTM) WGS’1984 Zone 13N False Easting: 500000.00000000 False Northing: 0.00000000 Central Meridian: -105.00000000 Scale Factor: 0.99960000 Latitude of Origin: 0.00000000 Linear Unit: Meter Datum: World Geodetic System ’1984 (WGS ’1984) Prime Meridian: Greenwich Angular Unit: Degree Digital Form: Format Name: Shape file

  18. Understanding the origin of high-rate intercalation pseudocapacitance in Nb2O5 crystals

    SciTech Connect (OSTI)

    Ganesh, Panchapakesan; Kent, P. R. C.; Sumpter, Bobby G; Lubimtsev, Andrew A

    2013-01-01

    Pseudocapacitors aim to maintain the high power density of supercapacitors while increasing the energy density towards those of energy dense storage systems such as lithium ion batteries. Recently discovered intercalation pseudocapacitors (e.g. Nb2O5) are particularly interesting because their performance is seemingly not limited by surface reactions or structures, but instead determined by the bulk crystalline structure of the material. We study ordered polymorphs of Nb2O5 and detail the mechanism for the intrinsic high rates and energy density observed for this class of materials. We find that the intercalating atom (lithium) forms a solid solution adsorbing at specific sites in a network of quasi-2D NbOx faces with x {1.3, 1.67, or 2}, donating electrons locally to its neighboring atoms, reducing niobium. Open channels in the structure have low diffusion barriers for ions to migrate between these sites (Eb 0.28 0.44 eV) comparable to high-performance solid electrolytes. Using a combination of complementary theoretical methods we rationalize this effect in LixNb2O5 for a wide range of compositions (x) and at finite temperatures. Multiple adsorption sites per unit-cell with similar adsorption energies and local charge transfer result in high capacity and energy density, while the interconnected open channels lead to low cost diffusion pathways between these sites, resulting in high power density. The nano-porous structure exhibiting local chemistry in a crystalline framework is the origin of high-rate pseudocapacitance in this new class of intercalation pseudocapacitor materials. This new insight provides guidance for improving the performance of this family of materials.

  19. Ethane oxidative dehydrogenation pathways on vanadium oxide catalysts

    SciTech Connect (OSTI)

    Argyle, Morris; Chen, Kaidong; Bell, Alexis T.; Iglesia, Enrique

    2001-12-10

    Kinetic and isotopic tracer and exchange measurements were used to determine the identity and reversibility of elementary steps involved in ethane oxidative dehydrogenation (ODH) on VOx/Al2O3 and VOx/ZrO2. C2H6-C2D6-O2 and C2H6-D2O-O2 react to form alkenes and COx without concurrent formation of C2H6-xDx orC2H4-xDx isotopomers, suggesting that C-H bond cleavage in ethane and ethene is an irreversible and kinetically relevant step in ODH and combustion reactions. Primary ethane ODH reactions show normal kinetic isotopic effects (kC-H/kC-D 2.4); similar values were measured for ethane and ethene combustion(1.9 and 2.8, respectively). 16O2-18O2-C2H6 reactions on supported V16Ox domains led to the initial appearance of 16O from the lattice in H2O, CO, and CO2, consistent with the involvement of lattice oxygen in C-H bond activation steps. Isotopic contents are similar in H2O, CO, and CO2, suggesting that ODH and combustion reactions use similar lattice oxygen sites. No 16O-18O isotopomer s were detected during reactions of 16O2-18O2-C2H6 mixtures, as expected if dissociative O2 chemisorption steps were irreversible. The alkyl species formed in these steps desorb irreversibly as ethene and the resulting O-H groups recombine to form H2O and reduced V centers in reversible desorption steps. These reduced V centers reoxidize by irreversible dissociative chemisorption of O2. A pseudo-steady state analysis of these elementary steps together with these reversibility assumptions led to a rate expression that accurately describes the observed inhibition of ODH rates by water and the measured kinetic dependence of ODH rates on C2H6 and O2 pressures. This kinetic analysis suggests that surface oxygen, OH groups, and oxygen vacancies are the most abundant reactive intermediates during ethane ODH on active VOx domains.

  20. Ethane oxidative dehydrogenation pathways on vanadium oxide catalysts

    SciTech Connect (OSTI)

    Argyle, Morris; Chen, Kaidong; Bell, Alexis T.; Iglesia, Enrique

    2001-12-10

    Kinetic and isotopic tracer and exchange measurements were used to determine the identity and reversibility of elementary steps involved in ethane oxidative dehydrogenation (ODH) on VOx/Al2O3 and VOx/ZrO2. C2H6-C2D6-O2 and C2H6-D2O-O2 react to form alkenes and COx without concurrent formation of C2H6-xDx orC2H4-xDx isotopomers, suggesting that C-H bond cleavage in ethane and ethene is an irreversible and kinetically relevant step in ODH and combustion reactions. Primary ethane ODH reactions show normal kinetic isotopic effects (kC-H/kC-D) 2.4; similar values were measured for ethane and ethene combustion(1.9 and 2.8, respectively). 16O2-18O2-C2H6 reactions on supported V16Ox domains led to the initial appearance of 16O from the lattice in H2O, CO, and CO2, consistent with the involvement of lattice oxygen in C-H bond activation steps. Isotopic contents are similar in H2O, CO, and CO2, suggesting that ODH and combustion reactions use similar lattice oxygen sites. No 16O-18O isotopomer s were detected during reactions of 16O2-18O2-C2H6 mixtures, as expected if dissociative O2 chemisorption steps were irreversible. The alkyl species formed in these steps desorb irreversibly as ethene and the resulting O-H groups recombine to form H2O and reduced V centers in reversible desorption steps. These reduced V centers reoxidize by irreversible dissociative chemisorption of O2. A pseudo-steady state analysis of these elementary steps together with these reversibility assumptions led to a rate expression that accurately describes the observed inhibition of ODH rates by water and the measured kinetic dependence of ODH rates on C2H6 and O2 pressures. This kinetic analysis suggests that surface oxygen, OH groups, and oxygen vacancies are the most abundant reactive intermediates during ethane ODH on active VOx domains.

  1. Mixed metallic Ba(Co,Mn)X{sub 0.2-x}O{sub 3-{delta}} (X=F, Cl) hexagonal perovskites

    SciTech Connect (OSTI)

    Iorgulescu, Mihaela; Roussel, Pascal; Tancret, Nathalie; Renaut, Nicolas; Tiercelin, Nicolas; Mentre, Olivier

    2013-02-15

    We show here that the incorporation of Mn in Ba-Co-oxohalide, BaCoX{sub 0.2-x}O{sub 3-{delta}}, hexagonal perovskite stabilizes the 6H-form (stacking sequence (chhhch Prime ); c, h=[BaO{sub 3}] and h Prime =[BaOX] layers), with tetramers of face-sharing octahedra) rather than the trimeric 10H-form. On the contrary to previous results on the Fe incorporation in similar system leading to more reduced 10H-compounds, the Mn effect is to increase the mean (Co/Mn) valence better suited to the 6H form. We experienced a poor Mn/Co miscibility during our syntheses leading to great difficulties to isolate mixed Co/Mn single phase materials and/or weak reproducibility. Powder neutron diffraction data shows a mixed Mn/Co octahedral occupancy, while the tetrahedra are filled by Co{sup 3+} cations. Anionic vacancies were refined in the h Prime -[BaO{sub 1-z}X{sub 1-x}] layer and the next c-[BaO{sub 3-z}] layers, while the h-[BaO{sub 3}] layers are not oxygen deficient. Magnetic properties suggest that a part of Mn cations remain paramagnetic until low temperature, while isolated spin clusters (probably driven by AFM Co tetrahedral dimers) behave as low-dimensional AFM systems. Transport measurements reveal a transition from high-temperature metallic to low-temperature semi-conducting states that could occur from defect shallow donor upon the Mn for Co substitution. - Graphical abstract: The incorporation of Mn in Ba-Co-oxohalide, BaCoX{sub 0.2-x}O{sub 3-{delta}}, hexagonal perovskite stabilizes the 6H-form with tetrameric (Co,Mn){sub 4}O{sub 15} face sharing linear chains. This results from a oxidizing Mn effect and particular Mn/Co distribution. Highlights: Black-Right-Pointing-Pointer The incorporation of Mn in BaCoX{sub 0.2-x}O{sub 3-{delta}} (X=F,Cl) hexagonal perovskites stabilizes the 6H-form. Black-Right-Pointing-Pointer It contains tetrameric (Co,Mn){sub 4}O{sub 15} face sharing linear chains. Black-Right-Pointing-Pointer The preference for such chains better than trimeric ones is due to the Manganese oxidizing effect. Black-Right-Pointing-Pointer A particular Mn/Co distribution was evidenced. Black-Right-Pointing-Pointer Transport and magnetic properties drastically change during the Mn incorporation.

  2. Local Availability of mathematics and number scaling: Effects on quantum physics

    E-Print Network [OSTI]

    Paul Benioff

    2012-05-01

    Local availability of mathematics and number scaling provide an approach to a coherent theory of physics and mathematics. Local availability of mathematics assigns separate mathematical universes, U_{x}, to each space time point, x. The mathematics available to an observer, O_{x}, at x is contained in U_{x}. Number scaling is based on extending the choice freedom of vector space bases in gauge theories to choice freedom of underlying number systems. Scaling arises in the description, in U_{x}, of mathematical systems in U_{y}. If a_{y} or \\psi_{y} is a number or a quantum state in U_{y}, then the corresponding number or state in U_{x} is r_{y,x}a_{x} or r_{y,x}\\psi_{x}. Here a_{x} and \\psi_{x} are the same number and state in U_{x} as a_{y} and \\psi_{y} are in U_{y}. If y=x+\\hat{\\mu}dx is a neighbor point of x, then the scaling factor is r_{y,x}=\\exp(\\vec{A}(x)\\cdot\\hat{\\mu}dx) where \\vec{A} is a vector field, assumed here to be the gradient of a scalar field. The effects of scaling and local availability of mathematics on quantum theory show that scaling has two components, external and internal. External scaling is shown above for a_{y} and \\psi_{y}. Internal scaling occurs in expressions with integrals or derivatives over space or space time. An example is the replacement of the position expectation value, \\int\\psi^{*}(y)y\\psi(y)dy, by \\int_{x}r_{y,x}\\psi^{*}_{x}(y_{x})y_{x}\\psi_{x}(y_{x})dy_{x}. This is an integral in U_{x}. The good agreement between quantum theory and experiment shows that scaling is negligible in a space region, L, in which experiments and calculations can be done, and results compared. L includes the solar system, but the speed of light limits the size of L to a few light years. Outside of $L$, at cosmological distances, the limits on scaling are not present.

  3. HOx radical chemistry in oxidation flow reactors with low-pressure mercury lamps systematically examined by modeling

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

    Peng, Z.; Day, D. A.; Stark, H.; Li, R.; Palm, B. B.; Brune, W. H.; Jimenez, J. L.

    2015-04-20

    Oxidation flow reactors (OFRs) using OH produced from low-pressure Hg lamps at 254 nm (OFR254) or both 185 and 254 nm (OFR185) are commonly used in atmospheric chemistry and other fields. OFR254 requires the addition of externally formed O3 since OH is formed from O3 photolysis, while OFR185 does not since O2 can be photolyzed to produce O3 and OH can also be formed from H2O photolysis. In this study, we use a plug-flow kinetic model to investigate OFR properties under a very wide range of conditions applicable to both field and laboratory studies. We show that the radical chemistrymore »in OFRs can be characterized as a function of UV light intensity, H2O concentration, and total external OH reactivity (OHRext, e.g., from VOCs, NOx, and SO2). OH exposure is decreased by added external OH reactivity. OFR185 is especially sensitive to this effect at low UV intensity due to low primary OH production. OFR254 can be more resilient against OH suppression at high injected O3 (e.g., 70 ppm), as a larger primary OH source from O3, as well as enhanced recycling of HO2 to OH, make external perturbations to the radical chemistry less significant. However if the external OH reactivity in OFR254 is much larger than OH reactivity from injected O3, OH suppression can reach two orders of magnitude. For a typical input of 7 ppm O3 (OHRO3 = 10 s?1) ten-fold OH suppression is observed at OHRext ? 100 s?1, which is similar or lower than used in many laboratory studies. This finding may have important implications for the interpretation of past laboratory studies, as applying OHexp measurements acquired under different conditions could lead to over an order-of-magnitude error in the estimated OHexp. The uncertainties of key model outputs due to uncertainty in all rate constants and absorption cross-sections in the model are within ± 25% for OH exposure and within ± 60% for other parameters. These uncertainties are small relative to the dynamic range of outputs. Uncertainty analysis shows that most of the uncertainty is contributed by photolysis rates of O3, O2, and H2O and reactions of OH and HO2 with themselves or with some abundant species, i.e., O3 and H2O2. Using HOx-recycling vs. destructive external OH reactivity only leads to small changes in OHexp under most conditions. Changing the identity (rate constant) of external OH reactants can result in substantial changes in OHexp due to different reductions in OH suppression as the reactant is consumed. We also report two equations for estimating OH exposure in OFR254. We find that the equation estimating OHexp from measured O3 consumption performs better than an alternative equation that does not use it, and thus recommend measuring both input and output O3 concentrations in OFR254 experiments. This study contributes to establishing a firm and systematic understanding of the gas-phase HOx and Ox chemistry in these reactors, and enables better experiment planning and interpretation as well as improved design of future reactors.« less

  4. LOW-RESOLUTION SPECTROSCOPY OF GAMMA-RAY BURST OPTICAL AFTERGLOWS: BIASES IN THE SWIFT SAMPLE AND CHARACTERIZATION OF THE ABSORBERS

    SciTech Connect (OSTI)

    Fynbo, J. P. U.; Malesani, D.; Vreeswijk, P. M.; Hjorth, J.; Sollerman, J.; Thoene, C. C.; Jakobsson, P.; Bjoernsson, G.; De Cia, A.; Prochaska, J. X.; Nardini, M.; Chen, H.-W.; Bloom, J. S.; Castro-Tirado, A. J.; Gorosabel, J.; Christensen, L.; Fruchter, A. S.

    2009-12-01

    We present a sample of 77 optical afterglows (OAs) of Swift detected gamma-ray bursts (GRBs) for which spectroscopic follow-up observations have been secured. Our first objective is to measure the redshifts of the bursts. For the majority (90%) of the afterglows, the redshifts have been determined from the spectra. We provide line lists and equivalent widths (EWs) for all detected lines redward of Ly{alpha} covered by the spectra. In addition to the GRB absorption systems, these lists include line strengths for a total of 33 intervening absorption systems. We discuss to what extent the current sample of Swift bursts with OA spectroscopy is a biased subsample of all Swift detected GRBs. For that purpose we define an X-ray-selected statistical sample of Swift bursts with optimal conditions for ground-based follow-up from the period 2005 March to 2008 September; 146 bursts fulfill our sample criteria. We derive the redshift distribution for the statistical (X-ray selected) sample and conclude that less than 18% of Swift bursts can be at z > 7. We compare the high-energy properties (e.g., {gamma}-ray (15-350 keV) fluence and duration, X-ray flux, and excess absorption) for three subsamples of bursts in the statistical sample: (1) bursts with redshifts measured from OA spectroscopy; (2) bursts with detected optical and/or near-IR afterglow, but no afterglow-based redshift; and (3) bursts with no detection of the OA. The bursts in group (1) have slightly higher {gamma}-ray fluences and higher X-ray fluxes and significantly less excess X-ray absorption than bursts in the other two groups. In addition, the fractions of dark bursts, defined as bursts with an optical to X-ray slope {beta}{sub OX} < 0.5, is 14% in group (1), 38% in group (2), and >39% in group (3). For the full sample, the dark burst fraction is constrained to be in the range 25%-42%. From this we conclude that the sample of GRBs with OA spectroscopy is not representative for all Swift bursts, most likely due to a bias against the most dusty sight lines. This should be taken into account when determining, e.g., the redshift or metallicity distribution of GRBs and when using GRBs as a probe of star formation. Finally, we characterize GRB absorption systems as a class and compare them to QSO absorption systems, in particular the damped Ly{alpha} absorbers (DLAs). On average GRB absorbers are characterized by significantly stronger EWs for H I as well as for both low and high ionization metal lines than what is seen in intervening QSO absorbers. However, the distribution of line strengths is very broad and several GRB absorbers have lines with EWs well within the range spanned by QSO-DLAs. Based on the 33 z > 2 bursts in the sample, we place a 95% confidence upper limit of 7.5% on the mean escape fraction of ionizing photons from star-forming galaxies.

  5. HOx radical chemistry in oxidation flow reactors with low-pressure mercury lamps systematically examined by modeling

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

    Peng, Z.; Day, D. A.; Stark, H.; Li, R.; Lee-Taylor, J.; Palm, B. B.; Brune, W. H.; Jimenez, J. L.

    2015-11-20

    Oxidation flow reactors (OFRs) using OH produced from low-pressure Hg lamps at 254 nm (OFR254) or both 185 and 254 nm (OFR185) are commonly used in atmospheric chemistry and other fields. OFR254 requires the addition of externally formed O3 since OH is formed from O3 photolysis, while OFR185 does not since O2 can be photolyzed to produce O3, and OH can also be formed from H2O photolysis. In this study, we use a plug-flow kinetic model to investigate OFR properties under a very wide range of conditions applicable to both field and laboratory studies. We show that the radical chemistrymore »in OFRs can be characterized as a function of UV light intensity, H2O concentration, and total external OH reactivity (OHRext, e.g., from volatile organic compounds (VOCs), NOx, and SO2). OH exposure is decreased by added external OH reactivity. OFR185 is especially sensitive to this effect at low UV intensity due to low primary OH production. OFR254 can be more resilient against OH suppression at high injected O3 (e.g., 70 ppm), as a larger primary OH source from O3, as well as enhanced recycling of HO2 to OH, make external perturbations to the radical chemistry less significant. However if the external OH reactivity in OFR254 is much larger than OH reactivity from injected O3, OH suppression can reach 2 orders of magnitude. For a typical input of 7 ppm O3 (OHRO3 = 10 s?1), 10-fold OH suppression is observed at OHRext ~ 100 s?1, which is similar or lower than used in many laboratory studies. The range of modeled OH suppression for literature experiments is consistent with the measured values except for those with isoprene. The finding on OH suppression may have important implications for the interpretation of past laboratory studies, as applying OHexp measurements acquired under different conditions could lead to over a 1-order-of-magnitude error in the estimated OHexp. The uncertainties of key model outputs due to uncertainty in all rate constants and absorption cross-sections in the model are within ±25 % for OH exposure and within ±60 % for other parameters. These uncertainties are small relative to the dynamic range of outputs. Uncertainty analysis shows that most of the uncertainty is contributed by photolysis rates of O3, O2, and H2O and reactions of OH and HO2 with themselves or with some abundant species, i.e., O3 and H2O2. OHexp calculated from direct integration and estimated from SO2 decay in the model with laminar and measured residence time distributions (RTDs) are generally within a factor of 2 from the plug-flow OHexp. However, in the models with RTDs, OHexp estimated from SO2 is systematically lower than directly integrated OHexp in the case of significant SO2 consumption. We thus recommended using OHexp estimated from the decay of the species under study when possible, to obtain the most appropriate information on photochemical aging in the OFR. Using HOx-recycling vs. destructive external OH reactivity only leads to small changes in OHexp under most conditions. Changing the identity (rate constant) of external OH reactants can result in substantial changes in OHexp due to different reductions in OH suppression as the reactant is consumed. We also report two equations for estimating OH exposure in OFR254. We find that the equation estimating OHexp from measured O3 consumption performs better than an alternative equation that does not use it, and thus recommend measuring both input and output O3 concentrations in OFR254 experiments. This study contributes to establishing a firm and systematic understanding of the gas-phase HOx and Ox chemistry in these reactors, and enables better experiment planning and interpretation as well as improved design of future reactors.« less

  6. The Integration of a Structural Water Gas Shift Catalyst with a Vanadium Alloy Hydrogen Transport Device

    SciTech Connect (OSTI)

    Barton, Thomas; Argyle, Morris; Popa, Tiberiu

    2009-06-30

    This project is in response to a requirement for a system that combines water gas shift technology with separation technology for coal derived synthesis gas. The justification of such a system would be improved efficiency for the overall hydrogen production. By removing hydrogen from the synthesis gas stream, the water gas shift equilibrium would force more carbon monoxide to carbon dioxide and maximize the total hydrogen produced. Additional benefit would derive from the reduction in capital cost of plant by the removal of one step in the process by integrating water gas shift with the membrane separation device. The answer turns out to be that the integration of hydrogen separation and water gas shift catalysis is possible and desirable. There are no significant roadblocks to that combination of technologies. The problem becomes one of design and selection of materials to optimize, or at least maximize performance of the two integrated steps. A goal of the project was to investigate the effects of alloying elements on the performance of vanadium membranes with respect to hydrogen flux and fabricability. Vanadium was chosen as a compromise between performance and cost. It is clear that the vanadium alloys for this application can be produced, but the approach is not simple and the results inconsistent. For any future contracts, large single batches of alloy would be obtained and rolled with larger facilities to produce the most consistent thin foils possible. Brazing was identified as a very likely choice for sealing the membranes to structural components. As alloying was beneficial to hydrogen transport, it became important to identify where those alloying elements might be detrimental to brazing. Cataloging positive and negative alloying effects was a significant portion of the initial project work on vanadium alloying. A water gas shift catalyst with ceramic like structural characteristics was the second large goal of the project. Alumina was added as a component of conventional high temperature water gas shift iron oxide based catalysts. The catalysts contained Fe-Al-Cr-Cu-O and were synthesized by co-precipitation. A series of catalysts were prepared with 5 to 50 wt% Al2O3, with 8 wt% Cr2O3, 4 wt% CuO, and the balance Fe2O3. All of the catalysts were compared to a reference WGS catalyst (88 wt% FeOx, 8 wt% Cr2O3, and 4 wt% CuO) with no alumina. Alumina addition to conventional high temperature water gas shift catalysts at concentrations of approximately 15 wt% increased CO conversion rates and increase thermal stability. A series of high temperature water gas shift catalysts containing iron, chromia, and copper oxides were prepared with small amounts of added ceria in the system Fe-Cr-Cu-Ce-O. The catalysts were also tested kinetically under WGS conditions. 2-4 wt% ceria addition (at the expense of the iron oxide content) resulted in increased reaction rates (from 22-32% higher) compared to the reference catalyst. The project goal of a 10,000 liter per day WGS-membrane reactor was achieved by a device operating on coal derived syngas containing significant amounts of carbon monoxide and hydrogen sulfide. The membrane flux was equivalent to 52 scfh/ft2 based on a 600 psi syngas inlet pressure and corresponded to membranes costing $191 per square foot. Over 40 hours of iv exposure time to syngas has been achieved for a double membrane reactor. Two modules of the Chart reactor were tested under coal syngas for over 75 hours with a single module tested for 50 hours. The permeance values for the Chart membranes were similar to the REB reactor though total flux was reduced due to significantly thicker membranes. Overall testing of membrane reactors on coal derived syngas was over 115 hours for all reactors tested. Testing of the REB double membrane device exceeded 40 hours. Performance of the double membrane reactor has been similar to the results for the single reactor with good maintenance of flux even after these long exposures to hydrogen sulfide. Of special interest is that the flux is highest at the start of each e