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1

OxCORT v4 Quick Guide Student Guide To OxCORT  

E-Print Network [OSTI]

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

Oxford, University of

2

Combustion Synthesis and Characterization of Nanocrystalline Tin and Tin Oxide (SnOx, x 02) Particles  

E-Print Network [OSTI]

Engineering, University of Michigan, Ann Arbor, Michigan 48109-2125 Nanocrystalline SnOx particles (x 0 solar cells,9 ­11 liquid crystal displays,10,11 photodetec- tors,6,11 and video touch screens,10 to name

Wooldridge, Margaret S.

3

Interfacial current-induced torques in Pt/Co/GdOx  

E-Print Network [OSTI]

Current-driven domain wall (DW) motion is investigated in Pt/Co/GdOx nanostrips with perpendicular magnetic anisotropy. Measurements of the propagation field and the energy barrier for thermally activated DW motion reveal ...

Emori, Satoru

4

Negative ion photodetachment spectroscopy of the Al3O2 , Al3O3 , Al4Ox , Al5Ox (x = 35), Al6O5 , and Al7O5 clusters  

E-Print Network [OSTI]

Negative ion photodetachment spectroscopy of the Al3O2 , Al3O3 , Al4Ox , Al5Ox (x = 3­5), Al6O5 , and Al7O5 clusters Giovanni Meloni, Michael J. Ferguson and Daniel M. Neumark Department of Chemistry as an Advance Article on the web 9th September 2003 The Al3O2 , Al3O3 , Al4Ox , Al5Ox (x ¼ 3­5), Al6O5 , and Al7

Neumark, Daniel M.

5

Overall photocatalytic water splitting with NiOxSrTiO3 a revised Troy K. Townsend,a  

E-Print Network [OSTI]

catalysts assumes water oxidation to occur at the early transition metal oxide and water reduction at NiOx­La : KTaO3, and many layered perovskites. Introduction Splitting water into hydrogen and oxygen gas usingOverall photocatalytic water splitting with NiOx­SrTiO3 ­ a revised mechanism Troy K. Townsend

Osterloh, Frank

6

Hole Selective MoOx Contact for Silicon Solar Cells Corsin Battaglia,,,  

E-Print Network [OSTI]

Hole Selective MoOx Contact for Silicon Solar Cells Corsin Battaglia,,, Xingtian Yin,,,§, Maxwell, University of California, Berkeley, California 94720, United States Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States § Electronic Materials Research

Javey, Ali

7

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

SciTech Connect (OSTI)

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.

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)

2013-10-15T23:59:59.000Z

8

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

SciTech Connect (OSTI)

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 ? = 0.501.00, where the films become GeO2. A detailed correlation between ?, n, k and stoichiometry in DC sputtered GeOx films is presented and discussed.

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

2014-03-18T23:59:59.000Z

9

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

E-Print Network [OSTI]

.enquiries@economics.ox.ac.uk . W: www.csae.ox.ac.uk 1 Climate Change, Green Growth and Aid Allocation to Poor Countries Stefan Dercon1 Abstract With serious impacts of climate change looming in a few decades, but current poverty to climate change, and remain focused on fighting current poverty reduction, including via economic growth

Oxford, University of

10

For more travel information, please visit-www.ox.ac.uk/visitors_friends/maps_and_directions/directions.html  

E-Print Network [OSTI]

will be Friday 18 January 2013. The Department offers a wide range of Graduate Studies Projects. A list of projects can be found on the Department web page: www.earth.ox.ac.uk/graduate_admissions/graduate_projects_2013-14. You may apply for an existing project, or propose your own. Applications are invited from

Henderson, Gideon

11

Ordered zinc-vacancy induced Zn0.75Ox nanophase structure Yong Ding, Rusen Yang, Zhong Lin Wang *  

E-Print Network [OSTI]

Ordered zinc-vacancy induced Zn0.75Ox nanophase structure Yong Ding, Rusen Yang, Zhong Lin Wang induced by Zn-vacancy has been discovered to grow on wurtzite ZnO nanobelts. The superstructure grows parameters of ZnO. The superstructured phase is resulted from high-density Zn vacancies orderly distributed

Wang, Zhong L.

12

Local stress-induced effects on AlGaAs/AlOx oxidation front shape  

SciTech Connect (OSTI)

The lateral oxidation of thick AlGaAs layers (>500?nm) is studied. An uncommon shape of the oxide tip is evidenced and attributed to the embedded stress distribution, inherent to the oxidation reaction. Experimental and numerical studies of the internal strain in oxidized Al{sub x}Ga{sub 1?x}As/GaAs structures were carried out by dark-field electron holography and finite element methods. A mapping of the strain distribution around the AlGaAs/oxide interface demonstrates the main role of internal stress on the shaping of the oxide front. These results demonstrate the high relevance of strain in oxide-confined III-V devices, in particular, with over-500-nm thick AlOx confinement layers.

Chouchane, F.; Almuneau, G., E-mail: almuneau@laas.fr; Arnoult, A.; Lacoste, G.; Fontaine, C. [CNRS, LAAS, 7 avenue du colonel Roche, F-31400 Toulouse (France); Univ de Toulouse, UPS, LAAS, F-31400 Toulouse (France); Cherkashin, N. [Univ de Toulouse, UPS, LAAS, F-31400 Toulouse (France); CNRS, CEMES, 29 Rue Jeanne Marvig, 31055 Toulouse Cedex 4 (France)

2014-07-28T23:59:59.000Z

13

NF-kB activity-dependent P-selectin involved in ox-LDL-induced foam cell formation in U937 cell  

SciTech Connect (OSTI)

Highlights: {yields} Ox-LDL induced foam cell formation in the human U937 promonocytic cell line in a dose- and time-dependent manner. {yields} Ox-LDL induced expression of P-selectin through degradation of IkBa and augment of NF-kB activity and protein level during macrophage-derived foam cell formation. {yields} P-selectin and NF-kB may be identified as pivotal regulators of ox-LDL-induced foam cell formation. {yields} Therapy based on the inhibition of P-selectin and NF-kB may complement conventional treatments to prevent atherosclerosis. -- Abstract: Oxidized low-density lipoprotein (ox-LDL) plays a critical role in regulation of atherosclerosis. However, little is known about the role of Nuclear factor kB (NF-kB) activity-dependent P-selectin in ox-LDL-induced foam cell formation during atherosclerosis. In this study, we first investigated ox-LDL induced foam cell formation in the human U937 promonocytic cell line in a dose- and time-dependent manner. Treatment of U937 cells with ox-LDL increased lipid accumulation as well as intracellular cholesterol content. Next, a comparative analysis of gene expression profiling using cDNA microarray and Real-time-PCR indicated that ox-LDL exposure induced, in three treated groups, an extremely marked increase in the mRNA level of P-selectin. Protein levels of P-selectin and its upstream regulators IkBa and NF-kB showed that NF-kB pathway is involved in the ox-LDL-induced foam cell formation. Finally, overexpression of NF-kB significantly accelerated, whereas, inhibition of NF-kB with siRNA remarkably attenuated ox-LDL-induced macrophage-derived foam cell formation. It was concluded that the activity of NF-kB is augmented during macrophage-derived foam cell formation. Activation of NF-kB increased, whereas, inhibition of NF-kB decreased ox-LDL-induced P-selectin expression and lipid accumulation in macrophages, suggesting ox-LDL induced expression of P-selectin through degradation of IkBa and activation of NF-kB in the regulation of foam cell formation.

Wang, Yi, E-mail: wangyi2004a@126.com [Department of Cardiology, Shanghai First People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200080 (China)] [Department of Cardiology, Shanghai First People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200080 (China); Wang, Xiang; Sun, Minghui; Zhang, Zhenyu; Cao, Heng; Chen, Xiaoqing [Department of Cardiology, Shanghai First People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200080 (China)] [Department of Cardiology, Shanghai First People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200080 (China)

2011-08-05T23:59:59.000Z

14

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

E-Print Network [OSTI]

by tetrachloroethylene (PCE) and 3.1-fold by trichloroethylene (TCE) at 100 µM. With the mutant P. stutzeri M1, which-oxidation activity induction by PCE and TCE was found; hence, PCE and TCE induce ToMO of P. stutzeri OX1-cresol). In addition, it was found that TCE and PCE do not di- rectly induce the tou pathway and that components other

Wood, Thomas K.

15

An investigation of the TiOxSiO2/Mo(112) interface M.S. Chen, D.W. Goodman *  

E-Print Network [OSTI]

Ox-covered SiO2(monolayer)/Mo(112) surface, SiO2 diffuses to the surface and is bonded via SiOTi linkages. SiO2 in this bond- ing configuration decomposes and desorbs more easily than from a Mo(112) surface energy loss spectroscopy (HREELS); Titanium oxides; Silica film; Mixed oxides; Surface structure

Goodman, Wayne

16

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

E-Print Network [OSTI]

of different materials on silicon solar wafers using inductively coupled plasma (ICP). One of the major features of the ICP technology is the high plasma density at low kinetic ion energy. These plasma on the SINGULAR production tool platform is discussed. A special focus will be placed on a-SiOxNy/SiNx and Al

17

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)

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.

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

2014-09-01T23:59:59.000Z

18

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

SciTech Connect (OSTI)

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.

Fang, Runchen; Yu, Shimeng, E-mail: shimengy@asu.edu [School of Computing, Informatics, and Decision Systems Engineering, Arizona State University, Tempe, Arizona 85281 (United States); School of Electrical, Computer, and Energy Engineering, Arizona State University, Tempe, Arizona 85287 (United States); Gonzalez Velo, Yago; Chen, Wenhao; Holbert, Keith E.; Kozicki, Michael N.; Barnaby, Hugh [School of Electrical, Computer, and Energy Engineering, Arizona State University, Tempe, Arizona 85287 (United States)

2014-05-05T23:59:59.000Z

19

Spatially-resolved EELS and EDS Analysis of HfOxNy Gate Dielectrics Deposited by MOCVD using [(C2H5)2N]4Hf with NO and O2  

E-Print Network [OSTI]

-resolved electron energy loss spectroscopy (EELS) and energy-dispersive spectrometry (EDS). HfOxNy gate dielectrics a replacement for SiO2 as the gate dielectric material. HfO2 is a promising candidate due to its high dielectric constant its stability on Si. However, crystallization temperatures of less than 500 °C and high impurity

Ng, Wai Tung

20

The structure of ordered Au films on TiOx M.S. Chen, K. Luo, D. Kumar, W.T. Wallace, C.-W. Yi, K.K. Gath, D.W. Goodman *  

E-Print Network [OSTI]

The structure of ordered Au films on TiOx M.S. Chen, K. Luo, D. Kumar, W.T. Wallace, C.-W. Yi, K.K-welded to the backside of the sample. The XPS data were collected using a Mg Ka source with an incident angle of 45

Goodman, Wayne

Note: This page contains sample records for the topic "ox yg enates" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

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

E-Print Network [OSTI]

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...

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

2003-02-01T23:59:59.000Z

22

Zurek-Kibble Mechanism for the Spontaneous Vortex Formation in Nb-Al/Al{sub ox}/Nb Josephson Tunnel Junctions: New Theory and Experiment  

SciTech Connect (OSTI)

New scaling behavior has been both predicted and observed in the spontaneous production of fluxons in quenched Nb-Al/Al{sub ox}/Nb annular Josephson tunnel junctions (JTJs) as a function of the quench time, {tau}{sub Q}. The probability f{sub 1} to trap a single defect during the normal-metal-superconductor phase transition clearly follows an allometric dependence on {tau}{sub Q} with a scaling exponent {sigma}=0.5, as predicted from the Zurek-Kibble mechanism for realistic JTJs formed by strongly coupled superconductors. This definitive experiment replaces one reported by us earlier, in which an idealized model was used that predicted {sigma}=0.25, commensurate with the then much poorer data. Our experiment remains the only condensed matter experiment to date to have measured a scaling exponent with any reliability.

Monaco, R. [Istituto di Cibernetica del C.N.R., 80078, Pozzuoli (Italy) and Unita INFM-Dipartimento di Fisica, Universita di Salerno, 84081 Baronissi (Italy); Mygind, J.; Aaroe, M. [Department of Physics, B309, Technical University of Denmark, DK-2800 Lyngby (Denmark); Rivers, R.J. [Blackett Laboratory, Imperial College London, London SW7 2AZ (United Kingdom); Koshelets, V.P. [Institute of Radio Engineering and Electronics, Russian Academy of Science, Mokhovaya 11, Building 7, 125009, Moscow (Russian Federation)

2006-05-12T23:59:59.000Z

23

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)

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.

Soldati, Analia L., E-mail: asoldati@cab.cnea.gov.ar [CONICET-CNEA Departamento de Caracterizacion de Materiales, Centro Atomico Bariloche, Av. Bustillo 9500, S.C. de Bariloche R8402AGP, Rio Negro (Argentina); Baque, Laura, E-mail: baque.laura@gmail.com [CONICET-CNEA Departamento de Caracterizacion de Materiales, Centro Atomico Bariloche, Av. Bustillo 9500, S.C. de Bariloche R8402AGP, Rio Negro (Argentina)] [CONICET-CNEA Departamento de Caracterizacion de Materiales, Centro Atomico Bariloche, Av. Bustillo 9500, S.C. de Bariloche R8402AGP, Rio Negro (Argentina); Napolitano, Federico, E-mail: napolitf@ib.cab.cnea.gov.ar [CONICET-CNEA Departamento de Caracterizacion de Materiales, Centro Atomico Bariloche, Av. Bustillo 9500, S.C. de Bariloche R8402AGP, Rio Negro (Argentina)] [CONICET-CNEA Departamento de Caracterizacion de Materiales, Centro Atomico Bariloche, Av. Bustillo 9500, S.C. de Bariloche R8402AGP, Rio Negro (Argentina); Serquis, Adriana, E-mail: aserquis@cab.cnea.gov.ar [CONICET-CNEA Departamento de Caracterizacion de Materiales, Centro Atomico Bariloche, Av. Bustillo 9500, S.C. de Bariloche R8402AGP, Rio Negro (Argentina)] [CONICET-CNEA Departamento de Caracterizacion de Materiales, Centro Atomico Bariloche, Av. Bustillo 9500, S.C. de Bariloche R8402AGP, Rio Negro (Argentina)

2013-02-15T23:59:59.000Z

24

Jules Verne LE DOCTEUR OX  

E-Print Network [OSTI]

'avenir. ..........................................................35 VII O les andante deviennent des allegro et les allegro des vivace

Har?El, Zvi

25

Jules Verne LE DOCTEUR OX  

E-Print Network [OSTI]

'avenir. ..........................................................36 VII O les andante deviennent des allegro et les allegro des vivace

Har?El, Zvi

26

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]

. 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...

Moore, Melanie 1989-

2012-11-26T23:59:59.000Z

27

www.careers.ox.ac.uk ENGINEERING &  

E-Print Network [OSTI]

Carpmaels & Ransford Cisco Systems Contact Singapore Costello Medical Consulting Double Negative Visual Consulting CoreFiling Limited Defence Science and Technology Laboratory (DSTL) Dehns Delcam plc EDF Energy Huddle Imagination Technologies IMC Financial Markets J A Kemp Jaguar Land Rover JCB Lloyd's Register

Melham, Tom

28

A study of insect resistance to chlorinated hydrocarbon insecticides--the effect of these compounds on oxidative metabolism  

E-Print Network [OSTI]

per Gra m of We ev il per Ho ur 19 Figure 3 - Oxygen Uptake of Untreated and Toxaphene Treated Pupae* Cu bi c Mi ll im et er s of Ox yg en per Gra m of We ev il per Ho ur 20 Figure 4 - Oxygen Uptake... ... 19 4 - Oxygen Uptake of Boll Weevil Pupae - Triton X-100 and Toxaphene Treated Pupae ....................................... 20 5 - One Day Old Adult Boll Weevils Reared on a Synthetic Diet - Oxygen Uptake of Untreated and Triton X-100 Treated...

Boyd, Vaughan Frank

1959-01-01T23:59:59.000Z

29

Low Cost SiOx-Graphite and Olivine Materials  

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

* Low energy * Poor cyclecalendar life Partners * V. Battaglia, V. Srinivasan (LBNL) * J. Goodenough (U. Texas) * P. Rotch (SNL) * C. Julien-A Mauger (U. Paris 6) Outline...

30

Low Cost SiOx-Graphite and Olivine Materials  

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

* Low energy * Poor cyclecalendar life Partners * V. Battaglia, V. Srinivasan (LBNL) * J. Goodenough (U. Texas) * P. Roth (SNL) * C. Julien-A. Mauger (U. Paris 6) * D. Wu...

31

SnOx Nanocrystallites Supported by Silica Nanostructures  

E-Print Network [OSTI]

, it has been possible to reduce a Ni(III) solution in an electroless process on the surface of the nanospheres producing a ferromagnetic crystalline nickel coating6 of variable thickness. These results.g., nickel, silver), as they result from ex-situ processes, does not lend itself readily to the creation

Wang, Zhong L.

32

Transient PrOx carbon monoxide measurement, control, and optimization  

SciTech Connect (OSTI)

Fuel processing systems for low temperature polymer electrolyte membrane (PEM) fuel cell systems require control of the carbon monoxide concentration to less than 100 ppm to 10 ppm in the anode feed. Conventional hydrocarbon fuel processors use a water-gas shift (WGS) reactor to react CO with water to form H2 and reduce the CO concentration. The CO conversion is limited by equilibrium at the outlet temperature of the WGS reactor. The WGS outlet CO concentration can range from over 1% to 2000 ppm depending on the system and its operating parameters. At these concentrations, CO poisons low temperature PEM fuel cells and the concentrations needs to be reduced further.

Inbody, M. A. (Michael A.); Borup, R. L. (Rodney L.); Tafoya, J. (Jose I.)

2002-01-01T23:59:59.000Z

33

OxCORT v4 Quick Guide Tutorial Reports  

E-Print Network [OSTI]

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

Oxford, University of

34

Tribological Properties of Self-assembled Monolayers on Au, SiOx and Si Surfaces  

SciTech Connect (OSTI)

Using interracial force microscopy (IFM), the tribological properties of self-assembled monolayer (SAM) on Si surfaces produced by a new chemical strategy are investigated and compared to those of classical SAM systems, which include alkanethiols on Au and alkylsilanes on SiO{sub x}. The new SAM films are prepared by depositing n-alkyl chains with OH-terminations onto Cl-terminated Si substrates. The chemical nature of the actual lubricating molecules, n-dodecyl, is kept constant in all three thin film systems for direct comparison and similarities and differences in tribological properties are observed. The adhesion strength is virtually identical for all three systems; however, frictional properties differ due to differences in film packing. Differences in the chemical bonds that attach the lubricant molecules to the substrate are also discussed as they influence variations in film wear and durability. It is demonstrated that the new SAM films are capable of controlling the friction and adhesion of Si surfaces as well as the classical SAMs in addition to providing a greater potential to be more reproducible and more durable.

KIM,HYUN I.; BOIADJIEV,V.; HOUSTON,JACK E.; ZHU,X.-Y; KIELY,J.D.

2000-07-20T23:59:59.000Z

35

Understanding of catalytic behaviors of TiO2/CuOx catalysts  

SciTech Connect (OSTI)

Aiming to reveal the catalysis at the metal-oxide and oxide-oxide interfaces,1,2 the water-gas shift reaction (WGS, CO + H2O and #61664; CO2 + H2) and CO oxidation (2CO + O2 and #61664; 2CO2) at the interface of the Cu(111) and Cu2O(111) supported TiO2 clusters were studied based on DFT calculations

Kim H. Y.; Liu, P.

2013-09-08T23:59:59.000Z

36

Synthesis and Characterization of Polymer-Coated Layered SiOx...  

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

component compatibility Partners * Jason Zhang (PNNL) * Gao Liu and Vince Battaglia (LBNL) * Nissan R&D Center (USA) 2 Overview Achieve high performance Si anode materials...

37

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

E-Print Network [OSTI]

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 ...

Song, Woon Ju

2011-01-01T23:59:59.000Z

38

The Role of NiOx Overlayers on Spontaneous Growth of NiSix Nanowires  

E-Print Network [OSTI]

implication as the general synthetic route for the spontaneous growth of metal-silicide nanowires in large CVD method employing the bilayers of transition metal and their oxides as the seed layers can provide scales. In the catalyst-assisted syntheses of one-dimensional nano- crystals, the metal catalytic

Jo, Moon-Ho

39

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

E-Print Network [OSTI]

of many biological processes Closed loop processes Batteries, DSSC, bio-tech Electrochemical balancing pressure (low p) Materials Novel nano-structured non- carbon electrodes Novel low cost discharging Materials that are robust in discharge reactions often fail under charging - e.g carbon Good

40

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

Note: This page contains sample records for the topic "ox yg enates" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

Adsorption and Reaction of C1-C3 Alcohols over CeOx(111) Thin Films  

SciTech Connect (OSTI)

This study reports the interaction of methanol, ethanol, 1-propanol, and 2-propanol with well-ordered CeO{sub 2}(111) thin film surfaces. All of the alcohols adsorb at low temperature by forming alkoxy and hydroxyl species on the surface. On fully oxidized CeO{sub 2}(111), recombination occurs between some of the alkoxys and hydroxyls, resulting in alcohol desorption near 220 K. At the same temperature, some of the surface hydroxyls disproportionate to produce water and the loss of lattice O. The remaining alkoxys react above 550 K. The primary alcohols favor dehydrogenation products (aldehydes). There is a net loss of O from the system, resulting in a reduction of the ceria. The secondary alcohol, 2-propanol, undergoes primarily dehydration, producing propene with no net change in the cerium oxidation state. Reduced CeO{sub x}(111) competes with the gaseous products for available O. Little or no water is produced. The reaction selectivity for the C{sub 2} and C{sub 3} alcohols shifts toward favoring dehydration products. The loss of O from the alcohols leads to oxidation of the reduced ceria. Compared with the oxidized surface, the alkene desorption shifts to lower temperature, whereas the aldehyde desorption shifts to higher temperature. This indicates that, on the reduced surface, it is easier to break the C-O bond but more difficult to break the O-substrate bond.

D Mullins; S Senanayake; T Chen

2011-12-31T23:59:59.000Z

42

Supplementary Material for: Application of Synchrotron Radiation for Measurement of Iron Red-ox  

E-Print Network [OSTI]

@engr.wisc.edu #12;Incandescent Light Bulb Spectrum Figure 1 Visible Light Fluorescent Light Bulb Spectrum #12;Figure 2 Visible Light Incandescent Light Bulb Spectrum #12;Figure 3 Unmodified XANES Spectrum February 14 of the incandescent lights used for aging the atmospheric aerosols. The units are in m / S / m2 / nm. Figure 3

Meskhidze, Nicholas

43

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

E-Print Network [OSTI]

profile in the Center Zone; they are arranged in a master/slave configuration and the temperature profile start. The wafers should have been RCA cleaned in TRL , less than 4 hours before you start the run and your process must be approved by PTC. 2) Load the wafers into the tube: - place the wafers

Reif, Rafael

44

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 Office of Inspector General Office0-72.pdfGeorgeDoesn't Happen toLeveragingLindseyLong-TermLosof

45

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 Rank EERE:YearRound-UpHeatMulti-Dimensionalthe10IO1OP001Long-Term Storage ofEnergy High Voltage Spinel10

46

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 Rank EERE:YearRound-UpHeatMulti-Dimensionalthe10IO1OP001Long-Term Storage ofEnergy High Voltage

47

Highly Dispersed and Active ReOx on Alumina-Modified SBA-15 Silica for  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation ProposedUsingFun withconfinement plasmas in theinPlastics -␤,of Energy2-Butanol

48

animal breeding studies: Topics by E-print Network  

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

an4 sold at enation o 21 2, Important mes'bors of the Allen family of Walking Horses Xxi& number of animals inbx'e4 to cash Important...

49

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

E-Print Network [OSTI]

.0%), YG 3 (33.8%), YG 4 (8.5%), and YG 5 (0.9%). Distribution of HCW was <272.2 kg (1.6%), 272.2 kg to 453.6 kg (95.1%), ?453.6 kg (3.3%). Monthly HCW means were: November 2010 (381.3 kg), January 2011 (375.9 kg), March 2011 (366.2 kg), May 2011 (357.9 kg...

Gray, Gatlan 1989-

2012-11-16T23:59:59.000Z

50

Asymptotic expansion for the solution of a penalized control ...  

E-Print Network [OSTI]

Multiplying equation (1) by yg and using Green's formula yields. ?. ? ...... suggested by Anton Schiela, in a personal communication, for the convex case.

2009-11-27T23:59:59.000Z

51

Probing the Reaction Intermediates for the Water-Gas Shift over Inverse CeOx/Au(111) Catalysts  

SciTech Connect (OSTI)

The water-gas shift (WGS) is an important reaction for the production of molecular H{sub 2} from CO and H{sub 2}O. An inverse CeO{sub x}/Au(1 1 1) catalyst exhibits a very good WGS activity, better than that of copper surfaces or Cu nanoparticles dispersed on a ZnO(0 0 0 {bar 1}) substrate which model current WGS industrial catalysts. In this work we report on intermediates likely to arise during the CO + H{sub 2}O reaction over CeO{sub x}/Au(1 1 1) using soft X-ray photoemission (sXPS) and near-edge X-ray absorption fine structure (NEXAFS). Several potential intermediates including formates (HCOO), carbonates (CO{sub 3}) and carboxylates (HOCO) are considered. Adsorption of HCOOH and CO{sub 2} is used to create both HCOO and CO{sub 3} on the CeO{sub x}/Au(1 1 1) surface, respectively. HCOO appears to have greater stability with desorption temperatures up to 600 K while CO{sub 3} only survives on the surface up to 300 K. On the CeO{sub x}/Au(1 1 1) catalysts, the presence of Ce{sup 3+} leads to the dissociation of H{sub 2}O to give OH groups. We demonstrate experimentally that the OH species are stable on the surface up to 600 K and interact with CO to yield weakly bound intermediates. When there is an abundance of Ce{sup 4+}, the OH concentration is diminished and the likely intermediates are carbonates. As the surface defects are increased and the Ce{sup 3+}/Ce{sup 4+} ratio grows, the OH concentration also grows and both carbonate and formate species are observed on the surface after dosing CO to H{sub 2}O/CeO{sub x}/Au(1 1 1). The addition of ceria nanoparticles to Au(1 1 1) is essential to generate an active WGS catalyst and to increase the production and stability of key reaction intermediates (OH, HCOO and CO{sub 3}).

Rodriguez, J.A.; Senanayake, S.D.; Stacchiola, D.; Evans, J.; Estrella, M.; Barrio-Pliego, L.; Prez, M.; Hrbek, J.

2010-05-04T23:59:59.000Z

52

Nanopattering in CeOx/Cu(111): A New Type of Surface Reconstruction and Enhancement of Catalytic Activity  

SciTech Connect (OSTI)

Our results indicate that small amounts of an oxide deposited on a stable metal surface can trigger a massive surface reconstruction under reaction conditions. In low-energy electron microscopy (LEEM) experiments, no reconstruction of Cu(111) is observed after chemisorbing oxygen or after reducing O/Cu(111) in a CO atmosphere. On the other hand, LEEM images taken in situ during the reduction of CeO{sub 2}/CuO{sub 1-x}/Cu(111) show a complex nonuniform transformation of the surface morphology. Ceria particles act as nucleation sites for the growth of copper microterraces once CuO{sub 1-x} is reduced. Can this reconstructed surface be used to enhance the catalytic activity of inverse oxide/metal catalysts? Indeed, CeO{sub x} on reconstructed Cu(111) is an extremely active catalyst for the water-gas shift process (CO + H{sub 2}O {yields} H{sub 2} + CO{sub 2}), with the Cu microterraces providing very efficient sites for the dissociation of water and subsequent reaction with CO.

Rodriguez J. A.; Senanayake, S.D.; Sadowski, J.; Evans, J.; Kundu, S.; Agnoli, S.; Yang, F.; Stacchiola, D.; Flege, J.I.; Hrbek, J.

2012-04-05T23:59:59.000Z

53

Probing the Reaction Intermediates for the Watergas Shift over Inverse CeOx / Au(1 1 1) Catalysts  

SciTech Connect (OSTI)

The water-gas shift (WGS) is an important reaction for the production of molecular H{sub 2} from CO and H{sub 2}O. An inverse CeO{sub x}/Au(1 1 1) catalyst exhibits a very good WGS activity, better than that of copper surfaces or Cu nanoparticles dispersed on a ZnO(0 0 0 {bar 1}) substrate which model current WGS industrial catalysts. In this work we report on intermediates likely to arise during the CO + H{sub 2}O reaction over CeO{sub x}/Au(1 1 1) using soft X-ray photoemission (sXPS) and near-edge X-ray absorption fine structure (NEXAFS). Several potential intermediates including formates (HCOO), carbonates (CO{sub 3}) and carboxylates (HOCO) are considered. Adsorption of HCOOH and CO{sub 2} is used to create both HCOO and CO{sub 3} on the CeO{sub x}/Au(1 1 1) surface, respectively. HCOO appears to have greater stability with desorption temperatures up to 600 K while CO{sub 3} only survives on the surface up to 300 K. On the CeO{sub x}/Au(1 1 1) catalysts, the presence of Ce{sup 3+} leads to the dissociation of H{sub 2}O to give OH groups. We demonstrate experimentally that the OH species are stable on the surface up to 600 K and interact with CO to yield weakly bound intermediates. When there is an abundance of Ce{sup 4+}, the OH concentration is diminished and the likely intermediates are carbonates. As the surface defects are increased and the Ce{sup 3+}/Ce{sup 4+} ratio grows, the OH concentration also grows and both carbonate and formate species are observed on the surface after dosing CO to H{sub 2}O/CeO{sub x}/Au(1 1 1). The addition of ceria nanoparticles to Au(1 1 1) is essential to generate an active WGS catalyst and to increase the production and stability of key reaction intermediates (OH, HCOO and CO{sub 3}).

Senanayake, S.; Stacchiola, D; Evans, J; Estrella, M; Barrio, L; Perez, M; Hrbek, J; Rodriguez, J

2010-01-01T23:59:59.000Z

54

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

E-Print Network [OSTI]

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 ...

Murray, Leslie Justin

2007-01-01T23:59:59.000Z

55

Nitrogen Doping and Thermal Stability in HfSiOxNy Studied by Photoemission and X-ray Absorption Spectroscopy  

SciTech Connect (OSTI)

We have investigated nitrogen-doping effects into HfSiO{sub x} films on Si and their thermal stability using synchrotron-radiation photoemission and x-ray absorption spectroscopy. N 1s core-level photoemission and N K-edge absorption spectra have revealed that chemical-bonding states of N-Si{sub 3-x}O{sub x} and interstitial N{sub 2}-gas-like features are clearly observed in as-grown HfSiO{sub x}N{sub y} film and they decrease upon ultrahigh vacuum (UHV) annealing due to a thermal instability, which can be related to the device performance. Annealing-temperature dependence in Hf 4f and Si 2p photoemission spectra suggests that the Hf-silicidation temperature is effectively increased by nitrogen doping into the HfSiO{sub x} although the interfacial SiO{sub 2} layer is selectively reduced. No change in valence-band spectra upon UHV annealing suggests that crystallization of the HfSiO{sub x}N{sub y} films is also hindered by nitrogen doping into the HfSiO{sub x}.

Toyoda, Satoshi; Okabayashi, Jun; Takahashi, Haruhiko; Oshima, Masaharu; /Tokyo U.; Lee, Dong-Ick; Sun, Shiyu; sun, Steven; Pianetta, Piero A.; /SLAC, SSRL; Ando, Takashi; Fukuda, Seiichi; /SONY, Atsugi

2005-12-14T23:59:59.000Z

56

Silicon heterojunction solar cell with passivated hole selective MoOx contact Corsin Battaglia,1,2  

E-Print Network [OSTI]

amorphous silicon layer (a-Si:H) as surface passivation layer.3,4 Carrier selectivity at the contacts is traditionally achieved by depos- iting a doped a-Si:H layer after passivation. With this approach record open coefficient combined with a high defect density, a-Si:H, even when only a few nanometers thin, leads to sig

Javey, Ali

57

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

E-Print Network [OSTI]

of sexual organs and development of ova) Oswald, ?. , ( 1939C), 467 (? does it exist in Jugoslavia) Oswald, ?., (1941A), 63-65 (key) Pavlovsky, ?. N. , (1956C), 366-376 Pavlovsky, ?. ?. , (1960A), 26-31 (functional morphology) Pavlovsky, ?. N... on bats (Desmo- dus rotundus murinus, Balantiopterix plicata" Macrotus mexicanus mexicanus, Natalus mexicanus, Tadarida brasiliensis brasiliensis) in Mexico) Holdenried, R. , Evans, F. C. & Longanecker, D. S. , (I95IA), 1-18 (Myotis yumanensis...

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

1974-01-01T23:59:59.000Z

58

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 RankCombustion |Energy Usage » SearchEnergyDepartmentScoping Study |4Solid-State TechnologiesEnergyof

59

Dung, diet, and the paleoenvironment of the extinct shrub-ox (Euceratherium collinum) on the Colorado Plateau, USA  

E-Print Network [OSTI]

) on the Colorado Plateau, USA Manny Kropf a,, Jim I. Mead a,c , R. Scott Anderson a,b a Laboratory of Quaternary; Scott, 1962; Martin and Wright, 1967; Nelson and Neas, 1980; Harris, 1985). Eu- ceratherium) and assumed by Mead and Agenbroad (1992) to belong to Euceratherium, indicate extinction as late as 11,500 14

Anderson, R. Scott

60

The Role of Cys2-His2 Zinc Finger Transcription Factors in Polyol Metabolism, Asexual Development and Fumonisin Biosynthesis in Fusarium verticillioides  

E-Print Network [OSTI]

of SDA1 were amplified with primer sets TF9-LF-F/ TF9- LF-R and TF9-RF-F/ TF9-RF-R, respectively. Then, partial HYG fragments designated HY (766 bp) and YG (924 bp) were amplified as previously described [82] with primer sets HYG/F-HY/R and YG/F-HYG/R..., respectively. In a 1:1 molar ratio, the 5? flanking region-YG fragment and the 3? flanking region-HY fragment were joined by PCR using primer sets TF-LF-F/YG-F and HY-R/TF9-RF-R, respectively. To complement the SDA1 deletion mutant (?sda1), the SDA1 gene...

Malapi-Wight, Martha Maria

2013-04-12T23:59:59.000Z

Note: This page contains sample records for the topic "ox yg enates" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

A comparative study of the complexation of Np(V) with N,N-dimethyl-3-oxa-glutaramic acid and related ligands: thermodynamics, optical properties and structural aspects  

E-Print Network [OSTI]

P. Zhang, J. Wang and L. Rao, Solv. Extr. Ion Exch. 2005, Y.G. Modolo, C. Madic and F. Testard, Solv. Extr. Ion Exch. H.T. Yaita and S. Tachimori, Solv. Extr. Ion Exch. 2004, 22,

Rao, Linfeng

2010-01-01T23:59:59.000Z

62

Developmental Science 9:3 (2006), pp 237269 2006 The Authors. Journal compilation 2006 Blackwell Publishing Ltd., 9600 Garsington Road, Oxford OX4 2DQ, UK and  

E-Print Network [OSTI]

impairments in dyslexia: a multiple case study of dyslexic children Sarah White,1 Elizabeth Milne,2,3 Stuart that characterizes dyslexia. Twenty-three children with dyslexia were compared to 22 control children, matched impairments. Introduction A classical account of the phonological theory of dyslexia assumes

Hansen, Peter

63

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

E-Print Network [OSTI]

, Whiteside C, Coleman PD, et al. (2010) Epigenetic changes in Alz- heimers disease: Decrements in DNAmethylation. Neurobiol Aging 31: 20252037. doi: 10.1016/j. neurobiolaging.2008.12.005 PMID: 19117641 15. Rudenko A, Dawlaty MM, Seo J, Cheng AW, Meng J, et... , Whiteside C, Coleman PD, et al. (2010) Epigenetic changes in Alz- heimers disease: Decrements in DNAmethylation. Neurobiol Aging 31: 20252037. doi: 10.1016/j. neurobiolaging.2008.12.005 PMID: 19117641 15. Rudenko A, Dawlaty MM, Seo J, Cheng AW, Meng J, et...

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

2015-02-23T23:59:59.000Z

64

Energy Level Alignment in PCDTBT:PC70BM Solar Cells: Solution Processed NiOx for Improved Hole Collection and Efficiency  

SciTech Connect (OSTI)

Solution-based NiO{sub x} outperforms PEDOT:PSS in device performance and stability when used as a hole-collection layer in bulk-heterojunction (BHJ) solar cells formed with poly[N-9'-heptadecanyl-2,7-carbazole-alt-5,5-(4',7'-di-2-thienyl-2',1',3'-benzothiadiazole)] (PCDTBT) and PC70BM. The origin of the enhancement is clarified by studying the interfacial energy level alignment between PCDTBT or the 1:4 blended heterojunctions and PEDOT:PSS or NiO{sub x} using ultraviolet and inverse photoemission spectroscopies. The 1.6 eV electronic gap of PEDOT:PSS and energy level alignment with the BHJ result in poor hole selectivity of PEDOT:PSS and allows electron recombination at the PEDOT:PSS/BHJ interface. Conversely, the large band gap (3.7 eV) of NiO{sub x} and interfacial dipole (0.6 eV) with the organic active layer leads to a hole-selective interface. This interfacial dipole yields enhanced electron blocking properties by increasing the barrier to electron injection. The presence of such a strong dipole is predicted to further promote hole collection from the organic layer into the oxide, resulting in increased fill factor and short circuit current. An overall decrease in recombination is manifested in an increase in open circuit voltage and power conversion efficiency of the device on NiO{sub x} versus PEDOT:PSS interlayers.

Ratcliff, E. L.; Meyer, J.; Steirer, K. X.; Armstrong, N. R.; Olson, D.; Kahn, A.

2012-05-01T23:59:59.000Z

65

CO Oxidation on Inverse CeOx/Cu(111) Catalysts: High Catalytic Activity and Ceria-Promoted Dissociation of O2  

SciTech Connect (OSTI)

A Cu(111) surface displays a low activity for the oxidation of carbon monoxide (2CO + O{sub 2} {yields} 2CO{sub 2}). Depending on the temperature, background pressure of O{sub 2}, and the exposure time, one can get chemisorbed O on Cu(111) or a layer of Cu{sub 2}O that may be deficient in oxygen. The addition of ceria nanoparticles (NPs) to Cu(111) substantially enhances interactions with the O{sub 2} molecule and facilitates the oxidation of the copper substrate. In images of scanning tunneling microscopy, ceria NPs exhibit two overlapping honeycomb-type moire structures, with the larger ones (H{sub 1}) having a periodicity of 4.2 nm and the smaller ones (H{sub 2}) having a periodicity of 1.20 nm. After annealing CeO{sub 2}/Cu(111) in O{sub 2} at elevated temperatures (600-700 K), a new phase of a Cu{sub 2}O{sub 1+x} surface oxide appears and propagates from the ceria NPs. The ceria is not only active for O{sub 2} dissociation, but provides a much faster channel for oxidation than the step edges of Cu(111). Exposure to CO at 550-750 K led to a partial reduction of the ceria NPs and the removal of the copper oxide layer. The CeO{sub x}/Cu(111) systems have activities for the 2CO + O{sub 2} {yields} 2CO{sub 2} reaction that are comparable or larger than those reported for surfaces of expensive noble metals such as Rh(111), Pd(110), and Pt(100). Density-functional calculations show that the supported ceria NPs are able to catalyze the oxidation of CO due to their special electronic and chemical properties. The configuration of the inverse oxide/metal catalyst opens new interesting routes for applications in catalysis.

F Yang; J Graciani; J Evans; P Liu; J Hrbek; J Fdez. Sanz; J Rodriguez

2011-12-31T23:59:59.000Z

66

Analysis of Substrate Access to Active Sites in Bacterial Multicomponent Monooxygenase Hydroxylases: X-Ray Crystal Structure of Xenon-Pressurized Phenol Hydroxylase from Pseudomonas Sp Ox1  

E-Print Network [OSTI]

In all structurally characterized bacterial multicomponent monooxygenase (BMM) hydroxylase proteins, a series of hydrophobic cavities in the ?-subunit trace a conserved path from the protein exterior to the carboxylate-bridged ...

McCormick, Michael S.

67

BULLETIN OF THE UNITED STATES FISII COMMISSION. 361 I II.--lSE"POKT OX?OPERATIONS A T TIIE BHAV-JIATCMJNG S'TATJON  

E-Print Network [OSTI]

.GRABILL, Siqc?*idetukictof Battery Station. [Abstract.] The first run of shad was perceived on April 18, and 35 of the season in the batch- ing-house.

68

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

E-Print Network [OSTI]

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

Popov, Branko N.

69

PERPoI@UHcE HoDPz.LnIG OF PAufuLH.l ox4PtJTER ARamTEcluREs  

E-Print Network [OSTI]

of Computing, Imperial College, London SW'7232 Abstract In this paper we describe two types of complex server

Imperial College, London

70

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

E-Print Network [OSTI]

report the use of ReaxFF to study the activation and conversion of propene to acrolein by various metal acrolein. The propene reations on V2O5 occur at lower temperatures than on Bi2O3 or Bi2Mo3O12. The results-metal­ oxide (MMO) catalysts, accounts for the majority of the 8 billion pounds of acrolein produced annually

van Duin, Adri

71

Deep-Sea Research, Vol. 36, No . 4, pp .483-495, 1989 . 11198-11149/89 $3.00 + OX  

E-Print Network [OSTI]

Britain . O 1989 Pergamon Press pie . RAPID RESPONSE PAPER Closing the microbial loop : dissolved carbon of dissolved organic carbon (DOC) from phyto- plankton to bacteria is through the byproducts of animal THE importance of the microbial loop in aquatic food webs today is little disputed . Recent measurements based

Jumars, Pete

72

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

E-Print Network [OSTI]

, Olivia D'Aoust , Olivier Sterck§ May 2014 Abstract We aim at understanding the triggers of electoral, Electoral violence, Polarization, Demobilization, Burundi JEL Classification: D74, O11, O17, O55 We thank, Antonio Estache, James Fenske, Anke Hoeffler, Davy Paindaveine, Cyrus Samii and Philip Verwimp

Oxford, University of

73

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

E-Print Network [OSTI]

Kenzie and Woodruff (2008) (DMW henceforth). The authors find large returns to capital drops both in the form of cash

Oxford, University of

75

Characterization of a Peroxodiiron(III) Intermediate in the T201S Variant of Toluene/o-Xylene Monooxygenase Hydroxylase from Pseudomonas sp. OX1  

E-Print Network [OSTI]

We report the observation of a novel intermediate in the reaction of a reduced toluene/o-xylene monooxygenase hydroxylase (ToMOH[subscript red]) T201S variant, in the presence of a regulatory protein (ToMOD), with dioxygen. ...

Song, Woon Ju

76

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

E-Print Network [OSTI]

the adoption of com- munal palm harvesting (imachi nkwu) in response to commercialization of palm oil among result is that, if the price of palm oil rises above a certain threshold, commu- nal property in Nigeria, however, curtailed private rights over palm trees in response to the palm produce trade

Oxford, University of

77

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

E-Print Network [OSTI]

international tests, based on cross-sectional data on children in middle or secondary school, raise two, prior to school enrolment, with children in Vietnam at the upper end, children in Ethiopia at the lower, and with Peru and India in between. Differences between country samples grow in magnitude at later ages

Oxford, University of

78

Supplementary Text S1. KD was calculated for binding of HMGB1a to CP-and OX-DNA in the TGGA, AGGC and CGGA  

E-Print Network [OSTI]

in relaxation MD and 2 ps in production MD; constant temperature, using weak-coupling algorithm, at 300 K, heat of the atoms. Besides the atomic partial charges, other force field parameters of the Pt-GG adducts were referenced from AMBER parm99 force field parameters or from previous work by Yao et al(2). and Scheeff et al

Dokholyan, Nikolay V.

79

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

E-Print Network [OSTI]

commodities. A sustained increase in the price of renewables (wool) reduces inequality whreas the same for non-renewable that one of the key empirical foundations of the Engerman and Sokoloff argument is that inequality in Latin America was higher than North America. Perhaps, but what about Europe? Williamson (2010) and Milanovic et

Oxford, University of

80

Guide prepared by Student Information email: student.information@admin.ox.ac.uk Information correct as of August 2013 Opening a bank account in Oxford  

E-Print Network [OSTI]

. A summary of the facilities offered by the five main UK banks; Santander, LloydsTSB, HSBC, Nat West

Oxford, University of

Note: This page contains sample records for the topic "ox yg enates" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

The Binding of Oxidized Low Density Lipoprotein to Mouse CD36 Is Mediated in Part by Oxidized Phospholipids That Are Associated  

E-Print Network [OSTI]

Friedman¶ , Edward A. Dennis, Joseph L. Witztum, Daniel Steinberg, and Oswald Quehenberger** From ( 50%) both by the reconstituted apoB from OxLDL and by microemulsions prepared from OxLDL lipids and by demonstrating reciprocal inhibition, i.e. apoB from OxLDL inhibited the binding of the OxLDL lipids and vice

Dennis, Edward A.

82

200410 28 29 1999 9 21 1 47  

E-Print Network [OSTI]

. Am., 91, 5. Chen, W. S., Y.G. Chen, Shih, R.C., Liu, T.K., Huang, N.W., Lin, C.C., Sung, S.H., Lee, K.G., Chen, W.S., Wang, Y., Lo, P.W., Lee, J.C., and Liu, T.K. (2002) Geomorphic evidence for prior-154 2001 21 1 19-36 Chen, W.S., Huang, B.S., Chen, Y.G., Lee, Y.H., Yang, C.N., Lo, C.H., Chang, H

Chen, Wen-Shan

83

Gold, Copper, and Platinum Nanoparticles Dispersed on CeOx/TiO2(110) Surfaces: High Water-Gas Shift Activity and the Nature of the Mixed-Metal Oxide at the Nanometer Level  

SciTech Connect (OSTI)

At small coverages of ceria on TiO{sub 2}(110), the CeO{sub x} nanoparticles have an unusual coordination mode. Scanning tunneling microscopy and density-functional calculations point to the presence of Ce{sub 2}O{sub 3} dimers, which form diagonal arrays that have specific orientations of 0, 24, and 42{sup o} with respect to the [1 -1 0] direction of the titania substrate. At high coverages of ceria on TiO{sub 2}(110), the surface exhibits two types of terraces. In one type, the morphology is not very different from that observed at low ceria coverage. However, in the second type of terrace, there is a compact array of ceria particles with structures that do not match the structures of CeO{sub 2}(111) or CeO{sub 2}(110). The titania substrate imposes on the ceria nanoparticles nontypical coordination modes, enhancing their chemical reactivity. This phenomenon leads to a larger dispersion of supported metal nanoparticles (M = Au, Cu, Pt) and makes possible the direct participation of the oxide in catalytic reactions. The M/CeO{sub x}/TiO{sub 2}(110) surfaces display an extremely high catalytic activity for the water-gas shift reaction that follows the sequence Au/CeO{sub x}/TiO{sub 2}(110) < Cu/CeO{sub x}/TiO{sub 2}(110) < Pt/CeO{sub x}/TiO{sub 2}(110). For low coverages of Cu and CeO{sub x}, Cu/CeO{sub x}/TiO{sub 2}(110) is 8-12 times more active than Cu(111) or Cu/ZnO industrial catalysts. In the M/CeO{sub x}/TiO{sub 2}(110) systems, there is a strong coupling of the chemical properties of the admetal and the mixed-metal oxide: The adsorption and dissociation of water probably take place on the oxide, CO adsorbs on the admetal nanoparticles, and all subsequent reaction steps occur at the oxide-admetal interface. The high catalytic activity of the M/CeO{sub x}/TiO{sub 2}(110) surfaces reflects the unique properties of the mixed-metal oxide at the nanometer level.

Park, J.; Graciani, J; Evans, J; Stacchiola, D; Senanayake, S; Barrio, L; Liu, P; Fdez. Sanz, J; Hrbek, J; Rodriguez, J

2010-01-01T23:59:59.000Z

84

CeO2 and CuOx Interactions and the Controlled Assembly of CeO2(111) and CeO2(100) Nanoparticles on an Oxidized Cu(111)Substrate  

SciTech Connect (OSTI)

The catalytic performance of ceria-based heterogeneous catalysts in many chemical transformations (water-gas shift reaction, CO oxidation, alcohol synthesis from CO/CO{sub 2} hydrogenation, etc.) is affected by the surface structure of the ceria. To control the performance of ceria-containing inverse catalysts, we devised a method to grow ceria nanoparticles (NPs) exposing exclusively either (111) or (100) surfaces and characterized their surface structures by scanning tunneling microscopy. When cerium is vapor-deposited on Cu(111) in a background of molecular O{sub 2}, only CeO{sub 2}(111) NPs grow. However, if the surface of Cu(111) is preoxidized with O{sub 2} or NO{sub 2} to form a rectangular copper oxide phase, probably Cu{sub 4}O{sub 3}(001), CeO{sub 2}(100) NPs grow on the oxide template instead. These experimental findings are interpreted using results of density functional calculations. The (100) surface of bulk ceria reconstructs to preserve charge neutrality. This is not necessary for CeO{sub 2}(100) NPs grown on Cu{sub 4}O{sub 3}(001), where the topmost oxygen layer of Cu{sub 4}O{sub 3} is shared with the interfacial layer of cerium. After the CeO{sub 2}(100)/CuO{sub x}/Cu(111) surfaces were exposed to CO, the copper oxide was reduced but the shape of the CeO{sub 2}(100) NPs remained intact. This opens the door for diverse applications in catalysis.

Rodriguez J. A.; Yang F.; Choi Y.M.; Agnoli S.; Liu P.; Stacchiola D.; Hrbek J.

2011-11-24T23:59:59.000Z

85

Gold, Copper and Platinum Nanoparticles Dispersed on CeOx/TiO2(110) Surfaces: High Water-Gas Shift Activity and the Nature of the Mixed-Metal Oxide at the Nanometer Level  

SciTech Connect (OSTI)

At small coverages of ceria on TiO{sub 2}(110), the CeO{sub x} nanoparticles have an unusual coordination mode. Scanning tunneling microscopy and density-functional calculations point to the presence of Ce{sub 2}O{sub 3} dimers, which form diagonal arrays that have specific orientations of 0, 24, and 42{sup o} with respect to the [1 -1 0] direction of the titania substrate. At high coverages of ceria on TiO{sub 2}(110), the surface exhibits two types of terraces. In one type, the morphology is not very different from that observed at low ceria coverage. However, in the second type of terrace, there is a compact array of ceria particles with structures that do not match the structures of CeO{sub 2}(111) or CeO{sub 2}(110). The titania substrate imposes on the ceria nanoparticles nontypical coordination modes, enhancing their chemical reactivity. This phenomenon leads to a larger dispersion of supported metal nanoparticles (M = Au, Cu, Pt) and makes possible the direct participation of the oxide in catalytic reactions. The M/CeO{sub x}/TiO{sub 2}(110) surfaces display an extremely high catalytic activity for the water-gas shift reaction that follows the sequence Au/CeO{sub x}/TiO{sub 2}(110) < Cu/CeO{sub x}/TiO{sub 2}(110) < Pt/CeO{sub x}/TiO{sub 2}(110). For low coverages of Cu and CeO{sub x}, Cu/CeO{sub x}/TiO{sub 2}(110) is 8-12 times more active than Cu(111) or Cu/ZnO industrial catalysts. In the M/CeO{sub x}/TiO{sub 2}(110) systems, there is a strong coupling of the chemical properties of the admetal and the mixed-metal oxide: The adsorption and dissociation of water probably take place on the oxide, CO adsorbs on the admetal nanoparticles, and all subsequent reaction steps occur at the oxide-admetal interface. The high catalytic activity of the M/CeO{sub x}/TiO{sub 2}(110) surfaces reflects the unique properties of the mixed-metal oxide at the nanometer level.

Rodriguez, J.A.; Park, J.B.; Graciani, J.; Evans, J.; Stacchiola, D.; Senanayake, S.D.; Barrio, L.; Liu, P.; Sanz, J.F.; Hrbek, J.

2010-01-13T23:59:59.000Z

86

Tourism in Marine Environments, Vol. 7. No.1. pp. 39-41 1544-273X11O $60.00 + .00 Printed in the USA. All rights reserved. 001: 10.372711544273 lOX 12826772784874  

E-Print Network [OSTI]

Tourism in Marine Environments, Vol. 7. No.1. pp. 39-41 1544-273X11O $60.00 + .00 Printed. Corp. www.cognizantcommunication.com RESEARCH NOTE HOW EFFECTIVE ARE POSTED SIGNS TO REGULATE TOURISM, USA §UBoren Marine Mammal Consultants, Richmond, New Zealand Increased tourism has augmented

Acevedo, Alejandro

87

2007 The Authors. Journal compilation 2007 United Nations. Published by Blackwell Publishing Ltd., 9600 Garsington Road, Oxford, OX4 2DQ, UK and 350 Main Street, Malden MA 02148, USA.  

E-Print Network [OSTI]

and sanitation facilities compared to other developing areas of the world (UNESCO-WWAP, 2003). In Mali, a country by half the proportion of people without access to safe drinking water and sanitation by 2015 design considerations. In planning for water supply in poor communities in the developing world

Walter, M.Todd

88

Proceedings of the 2007 IEEE Swarm Intelligence Symposium (SIS 2007) Enhanced Learning in Fuzzy Simulation Models  

E-Print Network [OSTI]

their efficiency and accuracy of simulation. Recently, learning algorithms that employ Particle Swarm OptimizationProceedings of the 2007 IEEE Swarm Intelligence Symposium (SIS 2007) Enhanced Learning in Fuzzy Simulation Models Using Memetic Particle Swarm Optimization Y.G. Petalas13, K.E. Parsopoulos1'3, E

Parsopoulos, Konstantinos

89

E-Print Network 3.0 - archaea-specific chemotaxis proteins Sample...  

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

Thomas K. Wood Chemotaxis of Pseudomonas stutzeri OX1... was chemotactic toward toluene, PCE, TCE, cis-DCE, 1,1-DCE, and VC. Chemotaxis of P. stutzeri OX1 grown on o... of...

90

THE JACOBIAN OF A RIEMANN SURFACE Fix a compact ...  

E-Print Network [OSTI]

Given a divisor D = ? npp, recall that we can associate a sheaf OX(D). By ... compatible with restriction, and such that M is locally isomorphic to OX. The.

2013-11-30T23:59:59.000Z

91

Slide 1  

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

absorbance XES @ SSRL 6-2 Normalized intensity XAS @ SSRL 4-1 Film Composition (XRF) Site Occupancies (REXD) Calculated Mn Ox. States (REXD) Averaged Mn Ox. States (XANES)...

92

Volume 11, Number 12 11 December 2010  

E-Print Network [OSTI]

@earth.ox.ac.uk) J. Biggs COMET+, Department of Earth Sciences, University of Oxford, South Parks Road, Oxford OX1 3 December 2010. Ebmeier, S. K., J. Biggs, T. A. Mather, G. Wadge, and F. Amelung (2010), Steady downslope

Biggs, Juliet

93

Oxford Colleges On-line Reports for Tutorials  

E-Print Network [OSTI]

OxCORT Oxford Colleges On-line Reports for Tutorials Tutor Role Version 4.5 BSP Training TeamCORT..........................................................................5 Roles in OxCORT..................................................................................5 of Revision Class reports.......................................................8 Report states

Oxford, University of

94

School of Mathematical and Physical Sciences  

E-Print Network [OSTI]

and J. P. GILCHRIST (Schlumberger Oilfield UK Plc, Wyndyke Furlong, Abingdon OX14 1UJ, UK) Summary We

Langdon, Stephen

95

George Smith, Department of Materials,  

E-Print Network [OSTI]

George Smith, Department of Materials, Oxford University, Parks Road, Oxford OX1 3PH UK Email: george.smith@materials.ox.ac.uk URL: www.materials.ox.ac.uk The aims of the Department of Materials experienced one of the most successful years in its 46-year history, says head of department George Smith. Top

Paxton, Anthony T.

96

Catalytic Properties of Supported MoO3 Catalysts for Oxidative Dehydrogenation of Propane  

E-Print Network [OSTI]

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

Iglesia, Enrique

97

A study of some factors influencing citrate metabolism in streptococcus faecalis  

E-Print Network [OSTI]

. incubation time was 36 hours at 37 C. 34 Table 3 8urv of atural s Test Substanoe Growth Resyonse Citrate Present Per Cent Trvytone Peytone Beef Entreat Nutrient Broth Yeast Entraot (Deco) 0 The test substances were added to 10 ml of one yer cent... 1 mg mg 1 mg 10 yg yg 1? NBQ "@@ands"See" acid-hydrolyzed caaein (Rgl) ms enbs~, 2. " Ro5sttii and Snail tlS'46). 3. Salts B; contained l0 mg MSSO4. 7820, 0. 5 g liaC1, 0. 5 g FeSO4, 7H2Q, 0, 5 g MnSO4. 4H20, and 0. 5 g ascorbic acid per 250...

Boley, Robert Ben

1960-01-01T23:59:59.000Z

98

A clinical and serological study of experimental Babesia bigemina infections in calves  

E-Print Network [OSTI]

). - = negative, + O+ = 1 animal serologioally positive. = positive. 49 Fig. 17. Graphic comparison among immunoglobulins yG and yM and CF ti ters of calves inoculated with B. bfgemina. 50 CIC CIC / / / / \\ I ~ \\ ~ ~ s ~ I I I CIC I 0 0 CD... on the basis of rectal temperature, packed cell volume, hemoglobin, total and differential leukocyte count, per cent parasitemia (thi n and thick blood films), body weight, total serum protein, fibrinogen, complement fixation titer and immunoglobulins yM...

Pallota-Lapenta, Felipe

1977-01-01T23:59:59.000Z

99

Tectonophysics 320 (2000) 6982 www.elsevier.com/locate/tecto  

E-Print Network [OSTI]

of the Early Penglai Orogeny, Taiwan, as assessed by fission-track constraints T.-K. Liu a,*, Y.-G. Chen a, W.-S and the continental side.fax: +886-2-2365-7380. E-mail address: liutk@ccms.ntu.edu.tw (T.-K. Liu) The eastern Central reserved. PII: S0040-1951 ( 00 ) 00028-7 #12;70 T.-K. Liu et al. / Tectonophysics 320 (2000) 69­82 #12;71T

Chen, Wen-Shan

100

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

Note: This page contains sample records for the topic "ox yg enates" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

Differences in carbon economy among five grain sorghum culitvars  

E-Print Network [OSTI]

. Patterns of Carbon Flexes. . . . . . . . . . . . . . . . . . . Carbon Flux !otals Harvested Biomass. Parameters Yg and m. Effect of m on Crain Yield. Critical Review o, Expe!imencal Technique. . . IV CONCLUSIONS. 56 6 58 61 gl 64 70 73... the indication that the rate of respiration has two addit'. ve components, one proportional to the rate of photosynthesis and the other to the total functional biomass on the plant. De Wit, Brouwer and Penning oe Vries (1970) first introduced the idea...

Fernandez, Carlos Julio

1977-01-01T23:59:59.000Z

102

Comparison of sampling techniques for Heliothis species in cotton  

E-Print Network [OSTI]

December 19g& Najor Subject: Entomology COMPARISON OF SAMPLING TECHNIQUES FOR HELIOTHIS SPECIES IN COTTON A Thesis by MICHELLE LYNN WALTERS Approved as to style and content by: J. K. Walker, Jr. (Chairman of Committee) J. K. Olson (Member) A. E.... Percival (Member) 2 & F/yg. (Member) F, G. Maxwell (Head of Department) December 1986 ABSTRACT Comparison of Sampling Techniques for Heliothis Species in Cotton. (December 1986) Nichelle Lynn Walters, B. S. , Arizona State University; Chairman...

Walters, Michelle Lynn

1986-01-01T23:59:59.000Z

103

Changes in surface water regime and resources in  

E-Print Network [OSTI]

distribution in Mongolia, l/s sq.km*100 Converted from 1: 1000000 map to 0.5ox0.5o grid points Results (Continuation) Mean evapotranspiration, mm/year Converted from 1: 9000000 map to 0.5ox0.5o grid #12;3 Evaporation from open water surface, mm/year Converted from 1: 9000000 map to 0.5ox0.5o grid cells Ratio

104

application cryogenic monitoring: Topics by E-print Network  

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

... Only one 10-digit reference number should be allotted to any one applicant and only one M1 monitoring@admin.ox.ac.uk...

105

Measurements of reactive trace gases and variable O3 formation rates in some South Carolina biomass burning plumes  

E-Print Network [OSTI]

nitric ox- ide (NO), nitrogen dioxide (NO 2 ), ammonia (NHNitric Oxide (NO) Nitrogen Dioxide (NO 2 ) Nitrogen Oxides (Nitric Oxide (NO) Nitrogen Dioxide (NO 2 ) Nitrogen Oxides (

2013-01-01T23:59:59.000Z

106

Tunable Transmittance of Near-infrared and Visible Light in Reconstruc...  

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

composite, ITO NCs and NbOx, were selected for their different spectral-selective electrochromic properties. When electrochemically reduced, ITO NCs block near-infrared (NIR)...

107

E-Print Network 3.0 - aerogel thermal isolation Sample Search...  

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

Physics 3 Ris National Laboratory Materials Research Department Summary: Ox aerogels to nanocrystalline forms. The various samples are labeled according to their thermal...

108

E-Print Network 3.0 - arsenal production reactor Sample Search...  

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

Processing Based On Summary: Fabrication of Integrated Unit Operation of ACR Reactors Optimization of ACR Reactor Operation Production... of Continuous H2 Stream Shift and PrOx...

109

ACTINIDES-1981. ABSTRACTS  

E-Print Network [OSTI]

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

Authors, Various

2010-01-01T23:59:59.000Z

110

E-Print Network 3.0 - ames wet oxidation process Sample Search...  

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

25 run 32 ICL wet photo oxEtch-BOE ... Source: Culpepper, Martin L. - Department of Mechanical Engineering, Massachusetts Institute of Technology (MIT) Collection:...

111

Correlation Between Optical Properties And Chemical Composition...  

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

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

112

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]

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

Oxford, University of

113

The Enamovirus P0 protein is a silencing suppressor which inhibits local and systemic RNA silencing through AGO1 degradation  

SciTech Connect (OSTI)

The P0 protein of poleroviruses and P1 protein of sobemoviruses suppress the plant's RNA silencing machinery. Here we identified a silencing suppressor protein (SSP), P0{sup PE}, in the Enamovirus Pea enation mosaic virus-1 (PEMV-1) and showed that it and the P0s of poleroviruses Potato leaf roll virus and Cereal yellow dwarf virus have strong local and systemic SSP activity, while the P1 of Sobemovirus Southern bean mosaic virus supresses systemic silencing. The nuclear localized P0{sup PE} has no discernable sequence conservation with known SSPs, but proved to be a strong suppressor of local silencing and a moderate suppressor of systemic silencing. Like the P0s from poleroviruses, P0{sup PE} destabilizes AGO1 and this action is mediated by an F-box-like domain. Therefore, despite the lack of any sequence similarity, the poleroviral and enamoviral SSPs have a conserved mode of action upon the RNA silencing machinery.

Fusaro, Adriana F. [University of Sydney, NSW 2006 (Australia) [University of Sydney, NSW 2006 (Australia); CSIRO Plant Industry, Canberra, P.O. Box 1600, ACT 2601 (Australia); Correa, Regis L. [CSIRO Plant Industry, Canberra, P.O. Box 1600, ACT 2601 (Australia) [CSIRO Plant Industry, Canberra, P.O. Box 1600, ACT 2601 (Australia); Depto. de Virologia, IMPPG, UFRJ, 21941-902 (Brazil); Nakasugi, Kenlee; Jackson, Craig [University of Sydney, NSW 2006 (Australia)] [University of Sydney, NSW 2006 (Australia); Kawchuk, Lawrence [Research Centre, Agriculture and Agri-Food Canada, Lethbridge, AB T1J4B1 (Canada)] [Research Centre, Agriculture and Agri-Food Canada, Lethbridge, AB T1J4B1 (Canada); Vaslin, Maite F.S. [Depto. de Virologia, IMPPG, UFRJ, 21941-902 (Brazil)] [Depto. de Virologia, IMPPG, UFRJ, 21941-902 (Brazil); Waterhouse, Peter M., E-mail: peter.waterhouse@sydney.edu.au [University of Sydney, NSW 2006 (Australia); CSIRO Plant Industry, Canberra, P.O. Box 1600, ACT 2601 (Australia)

2012-05-10T23:59:59.000Z

114

Appl Microbiol Biotechnol (2005) 66: 696701 DOI 10.1007/s00253-004-1685-4  

E-Print Network [OSTI]

toward toluene, trichloro- ethylene (TCE), tetrachloroethylene (PCE), cis-1,2-di- chloroethylene (cis. stutzeri OX1 and P. putida F1 were chemotactic toward toluene, PCE, TCE, all DCEs, and VC. B. cepacia G4 was chemotactic toward toluene, PCE, TCE, cis-DCE, 1,1-DCE, and VC. Chemotaxis of P. stutzeri OX1 grown on o

Wood, Thomas K.

115

Research on Offshore Foundations: Papers at the International Symposium on Frontiers in  

E-Print Network [OSTI]

Research on Offshore Foundations: Papers at the International Symposium on Frontiers in Offshore@eng.ox.ac.uk http://www-civil.eng.ox.ac.uk/ #12;Research on Offshore Foundations: Papers at the International Symposium on Frontiers in Offshore Geotechnics Perth, Australia, 2005 G.T. Houlsby, C.M. Martin, B.W. Byrne

Byrne, Byron

116

Religion, Land and Politics: Shrines and Literacy in Punjab  

E-Print Network [OSTI]

.malik@qeh.ox.ac.uk Rinchan Ali Mirza Faculty of History University of Oxford rinchan.mirza@history.ox.ac.uk A B S T R A C a unique database covering the universe of shrines across Pakistani Punjab, we explore whether the presence to education: schooling differences across countries are grounded in history and political economy (Gallego

Bandyopadhyay, Antar

117

Solvent Interactions and Conformational Choice in a Core N-Glycan Segment: Gas Phase Conformation of the Central,  

E-Print Network [OSTI]

. Gamblin, Emilio J. Cocinero, Jann Frey, Romano T. Kroemer,# Antony J. Fairbanks, Benjamin G. Davis,*, and John P. Simons*, Department of Chemistry, UniVersity of Oxford, Physical and Theoretical Chemistry-mail: john.simons@chem.ox.ac.uk; Ben.Davis@chem.ox.ac.uk Abstract: The intrinsic conformational preferences

Davis, Ben G.

118

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

E-Print Network [OSTI]

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

De Sterck, Hans

119

Summer 2011 2 Oxford Philosophy Summer 2011 3Oxford Philosophy Summer 2011  

E-Print Network [OSTI]

Oxford Philosophy Summer 2011 #12;2 Oxford Philosophy Summer 2011 3Oxford Philosophy Summer 2011 Editors Design Photography Printing Contact us at: Oxford Philosophy Faculty of Philosophy University of Oxford 10 Merton Street Oxford OX1 4JJ UK email:news@philosophy.ox.ac.uk tel:+44 (0)1865 276928 fax:+44

Oxford, University of

120

BEHAVIOURAL AND BRAIN SCIENCES (2000) 23, 177-234 Printed in the United States of America  

E-Print Network [OSTI]

BEHAVIOURAL AND BRAIN SCIENCES (2000) 23, 177-234 Printed in the United States of America Précis of The Brain and Emotion Edmund T. Rolls Department of Experimental Psychology, University of Oxford, Oxford OX1 3UD, England. Edmund.Rolls@psy.ox.ac.uk Abstract: The topics treated in The Brain and Emotion

Rolls, Edmund T.

Note: This page contains sample records for the topic "ox yg enates" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

Geophys. J. Int. (2009) 176, 353367 doi: 10.1111/j.1365-246X.2008.03932.x GJIGeodesy,potentialfieldandappliedgeophysics  

E-Print Network [OSTI]

,potentialfieldandappliedgeophysics The postseismic response to the 2002 M 7.9 Denali Fault earthquake: constraints from InSAR 2003­2005 Juliet Biggs, OX1 3PR, UK. E-mail: Juliet.Biggs@earth.ox.ac.uk 2University of California, Berkeley, USA 3

Biggs, Juliet

122

Measurement of the Optical Proper-ties of Volcanic Ash  

E-Print Network [OSTI]

: ­ Scattering solar radiation. ­ Absorption in the infrared. For chemical reactions: ­ Particles become coatedMeasurement of the Optical Proper- ties of Volcanic Ash Daniel M. Peters and R. G. Grainger@atm.ox.ac.uk http://www.atm.ox.ac.uk 1 Abstract We have just commenced a laboratory project, the "Optical Properties

Oxford, University of

123

Atomic-Scale Detection of Organic Molecules Coupled to Single-Walled Carbon Nanotubes  

E-Print Network [OSTI]

Atomic-Scale Detection of Organic Molecules Coupled to Single-Walled Carbon Nanotubes Sung You Hong.green@chem.ox.ac.uk; ben.davis@chem.ox.ac.uk Functionalized carbon nanotubes (f-CNTs) bearing organic molecules functionalization of single-walled carbon nanotubes (SWNTs) can tailor critical proper- ties such as solubility

Davis, Ben G.

124

Communication www.rsc.org/chemcomm  

E-Print Network [OSTI]

Communication www.rsc.org/chemcomm CHEMCOMM Electron beam induced in situ clusterisation of 1D Zr-Borkowskib and Malcolm L. H. Green*a a Wolfson Catalysis Centre (Carbon Nanotechnology Group), Inorganic Chemistry Laboratory, University of Oxford, South Parks Road, Oxford, UK OX1 3QR. E-mail: malcolm.green@chem.ox.ac.uk b

Dunin-Borkowski, Rafal E.

125

15N2 formation and fast oxygen isotope exchange during pulsed...  

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

N2 formation and fast oxygen isotope exchange during pulsed 15N18O exposure of MnOxCeO2. 15N2 formation and fast oxygen isotope exchange during pulsed 15N18O exposure of MnOx...

126

Received 18 July 2001 Accepted 11 January 2002  

E-Print Network [OSTI]

of Solar Energy and Environmental Physics, Blaustein Institute for Desert Research, Ben Gurion University 38, D-01187 Dresden, Germany 2 Mathematical Institute, University of Oxford, Oxford OX1 3LB, UK 3, the transformation to a dormant state occurs as a result of * Author for correspondence (hardenberg@maths.ox.ac.uk

Meron, Ehud

127

AN ANISOTROPIC DIFFUSION APPROACH FOR EARLY DETECTION OF BREAST CANCER  

E-Print Network [OSTI]

AN ANISOTROPIC DIFFUSION APPROACH FOR EARLY DETECTION OF BREAST CANCER Marius George LINGURARU, Oxford OX2 7BZ, United Kingdom mglin@robots.ox.ac.uk Abstract: The prevalence of breast cancer must provide effective clinical methods to detect cancer and improve life expectancy. Considerable

Paris-Sud XI, Université de

128

Proc. Natl. Acad. Sci. USA Vol. 96, pp. 63476352, May 1999  

E-Print Network [OSTI]

, JOSEPH L. WITZTUM, AND DANIEL STEINBERG§ Departments of Medicine 0682 and Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093-0682 Contributed by Daniel (apoB) isolated from OxLDL, suggesting that macrophage recognition of OxLDL is primarily depen- dent

Dennis, Edward A.

129

UK Energy Research Centre Demand Reduction Theme, University of Oxford  

E-Print Network [OSTI]

UK Energy Research Centre Demand Reduction Theme, University of Oxford The Experience of Carbon Energy Research Centre ­ Demand Reduction Theme Environmental Change Institute Oxford University Centre 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

130

Attributes considered important by Central East Texas high school seniors when choosing a college  

E-Print Network [OSTI]

&HDO ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ 1 ~ ~ ~ ~ ~ ~ ~ ~ RRLATXfRSHIP BRTWRRf THR OCCUPATION OF THR HAIN WASRR RARNHR IN THR STUDRfT'8 HfNN AND HXS ATTITUDR TOWARD A OOLLRQR HAVZNO 1 HIOH AOAHNfXC RATINO ~ ~ r ~ ~ RELATIfgfSHXP BRTfNRf THR ERRSTXOR RATZNO OF Tlm OCCUPATION OF THR... &- Ralph F. !3erdies, "Ry' Son't They Go To Collegel, " CHQT% II Tggcm& icdh yg'dgRIINK pea the review of literatsre, it was evident that there has boca scan resesroh oosoernisg the question as to &ho goes to oolieg?, bcLt little wns hncna regardiag...

Uribe, Ernesto

1962-01-01T23:59:59.000Z

131

Enhancement of two-phase flow images obtained using dynamic neutron radiography  

E-Print Network [OSTI]

is set to make the system operate at 30 frames per second and hence lasts approximately 52. 3 p. s. From this we can derive an equation to give the time elapsed between any two points on any frame or pair of frames: Tv~ =[2(Fi Fi)+(fi fi)]Ty+~z(yz yg... AND ANALYSIS . Visualization Aids . . . . . . . . . . . . . . . . Contrast Enhancement. P seudocoloring . Filtering Methods. Median Filter Weighted Mean Filter . I . . . . 3 7. . 8 . 10 . . . . I 0 . 11 13 13 . 14 15 . 15 . 16 . 18 19 . 20...

Johns, Russell Craig

1995-01-01T23:59:59.000Z

132

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

E-Print Network [OSTI]

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...

Bondari, Katrina

2011-05-19T23:59:59.000Z

133

Ecology and geographic variation in Pieris protodice Boisduval and LeCont (Lepidoptera, Pieridae)  

E-Print Network [OSTI]

of tha Oeaos ~ Si storioal Raviss ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ o ~ ~ ~ ~ ~ Methods of Stadp . . Looal ietseology aad Behavior of ~ ygB~/gg with Coapsrisons to ~C Looal Popvlatioa Studios oa gQgQ ~gyes . Ooographio Variatioa io ~ Zg... Rorster an& Wehlfshrt (19'), werldng only en a&&&le Rarupean Lopi&optera, listed tho gasps ~ Schrank, with spentas )RR&R~R L. , ZgIR L. , ~ Mayer, RSRSRR Rhbner and Sayer, gag, L. ~ an& gRRNggg Oberth&r~ tho genus ~ yabricius, with the species Q~R L...

Abbott, Walter Patton

1957-01-01T23:59:59.000Z

134

On the theory of water level variations in lakes and seas induced by atmospheric disturbances  

E-Print Network [OSTI]

, Boundary Conditions: u. (o. q, t) = u- C~, gt) = ~ (W, - K, t) = 0 au. 8u [ Q ? (y-g t) = -+ ? (w, o, t) = ? ? ~ Wpl~ %+ R eQ? x~v Initial Conditions; u. (e?q, o) = q (W, o) = 0 Solution: The expressions %q = co+ 'La ~ exp Q~ J ?= ?in Iy z(g ??p... ~ = constant) ~Q ~ ~ b~ at o~ a+ + \\ 0 a at C. F || I. 11* tl*o ~Co 0o1 Ilsed: In general, the response of a given body of homo- geneous water to atmospheric pressure grad1ents and winds depends on the eddy viscos1ty of the weter, the Coriolis force...

Sparger, Carter Reece

1953-01-01T23:59:59.000Z

135

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

E-Print Network [OSTI]

- ~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...

Smith, Susan Marilyn Hartman

1977-01-01T23:59:59.000Z

136

A Manual of Methods for Baculovirus Vectors and Insect Cell Culture Procedures.  

E-Print Network [OSTI]

isolation .................. 33 4.5.1 Purification of extracellular virus DNA. . . . 33 4.5.2 Purification of total DNA from infected cells 35 4.6 Radiolabeling recombinant proteins. . . . . . . . . . 36 4 5 Preparation of insect cell culture media 5....1 Preparation of TNM-FH medium . 5.1.1 lOX Soluble amino acids .. 5.1.2 100X Insoluble amino acids 5.1.3 lOX Carbohydrates .... . 5.1.4 1000X Vitamins ..... . 5.1.5 Preparing 4 liters of IX medium 5.2 lOX Stocks: Preparation checklist. 5.3 Media...

Summers, Max D.; Smith, Gale E.

1987-01-01T23:59:59.000Z

137

PWR core design, neutronics evaluation and fuel cycle analysis for thorium-uranium breeding recycle  

SciTech Connect (OSTI)

This paper was focused on core design, neutronics evaluation and fuel cycle analysis for Thorium-Uranium Breeding Recycle in current PWRs, without any major change to the fuel lattice and the core internals, but substituting the UOX pellet with Thorium-based pellet. The fuel cycle analysis indicates that Thorium-Uranium Breeding Recycle is technically feasible in current PWRs. A 4-loop, 193-assembly PWR core utilizing 17 x 17 fuel assemblies (FAs) was taken as the model core. Two mixed cores were investigated respectively loaded with mixed reactor grade Plutonium-Thorium (PuThOX) FAs and mixed reactor grade {sup 233}U-Thorium (U{sub 3}ThOX) FAs on the basis of reference full Uranium oxide (UOX) equilibrium-cycle core. The UOX/PuThOX mixed core consists of 121 UOX FAs and 72 PuThOX FAs. The reactor grade {sup 233}U extracted from burnt PuThOX fuel was used to fabrication of U{sub 3}ThOX for starting Thorium-. Uranium breeding recycle. In UOX/U{sub 3}ThOX mixed core, the well designed U{sub 3}ThOX FAs with 1.94 w/o fissile uranium (mainly {sup 233}U) were located on the periphery of core as a blanket region. U{sub 3}ThOX FAs remained in-core for 6 cycles with the discharged burnup achieving 28 GWD/tHM. Compared with initially loading, the fissile material inventory in U{sub 3}ThOX fuel has increased by 7% via 1-year cooling after discharge. 157 UOX fuel assemblies were located in the inner of UOX/U{sub 3}ThOX mixed core refueling with 64 FAs at each cycle. The designed UOX/PuThOX and UOX/U{sub 3}ThOX mixed core satisfied related nuclear design criteria. The full core performance analyses have shown that mixed core with PuThOX loading has similar impacts as MOX on several neutronic characteristic parameters, such as reduced differential boron worth, higher critical boron concentration, more negative moderator temperature coefficient, reduced control rod worth, reduced shutdown margin, etc.; while mixed core with U{sub 3}ThOX loading on the periphery of core has no visible impacts on neutronic characteristics compared with reference full UOX core. The fuel cycle analysis has shown that {sup 233}U mono-recycling with U{sub 3}ThOX fuel could save 13% of natural uranium resource compared with UOX once through fuel cycle, slightly more than that of Plutonium single-recycling with MOX fuel. If {sup 233}U multi-recycling with U{sub 3}ThOX fuel is implemented, more natural uranium resource would be saved. (authors)

Bi, G.; Liu, C.; Si, S. [Shanghai Nuclear Engineering Research and Design Inst., No. 29, Hongcao Road, Shanghai, 200233 (China)

2012-07-01T23:59:59.000Z

138

al ruido industrial: Topics by E-print Network  

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

Summary: .5% absolute 2 compared to conventional aluminum back surface field (Al-BSF) solar cells. The main effect SINGULAR In the recent years, aluminum oxide (AlOx) layers...

139

E-Print Network 3.0 - approximate l-state solutions Sample Search...  

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

where C... 'o','x','+'. Omit C for a connected graph. APPROXIMATE SOLUTIONS The matlab commands eul, rk2, and rk4 can be used... to obtain approximate solutions of the ......

140

Thallium isotopes in early diagenetic pyrite A paleoredox proxy? Sune G. Nielsen a,b,  

E-Print Network [OSTI]

Thallium isotopes in early diagenetic pyrite ­ A paleoredox proxy? Sune G. Nielsen a,b, , Matt Goff of Oxford, South Parks Road, Oxford OX1 3AN, UK. Tel.: +44 1865272027. E-mail address: sune

Lee, Cin-Ty Aeolus

Note: This page contains sample records for the topic "ox yg enates" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

Probing warm dense lithium by inelastic X-ray scattering  

E-Print Network [OSTI]

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

Loss, Daniel

142

December, 2007 Dear Dr Harris,  

E-Print Network [OSTI]

) 1865 273 418 Email: r.bartolini1@physics.ox.ac.uk for Accelerator Science J A I John Adams Institute03th December, 2007 Dear Dr Harris, I am writing, as your constituent, to express my worries about

Crowther, Paul

143

Drift Chamber R&D K.T. McDonald  

E-Print Network [OSTI]

or electroless nickel? 2. Deflection of 1/32 segments of the endplates. 3. Prototype III, a 1/16 segment ox- ide. Inexpensive. The electroless nickel process can put a layer of nickel up to 0.0001 thick

McDonald, Kirk

144

TESTS OF HATCHERY FOODS FOR BLUEBACK SALMON 1951  

E-Print Network [OSTI]

>eooeoooooooooeooeoo XX 1"63, U*^ V XSCGrS^JTLG&X L/OnX'rOX oooaaeoooeop^^ooooooooooooooooooeoeeoe XX Air-Lift Dried at the Leavenworth Laboratory to develop adequate diets for the artificial propagation of salmon

145

physics | EMSL  

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

physics physics Leads No leads are available at this time. 15N2 formation and fast oxygen isotope exchange during pulsed 15N18O exposure of MnOxCeO2. Abstract: Pulsing 15N18O onto...

146

EMSL - physics  

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

physics en 15N2 formation and fast oxygen isotope exchange during pulsed 15N18O exposure of MnOxCeO2. http:www.emsl.pnl.govemslwebpublications15n2-formation-and-fast-oxygen-i...

147

Site Name: Granite Rock Date: 2005-2007, 2009  

E-Print Network [OSTI]

Site Name: Granite Rock Date: 2005-2007, 2009 Partners/Collaborators: CC&R Description: Work-native plants identified on Granite Rock site: Bristly Ox Tongue Picris echioides Bull Thistle Cirsium vulgare

McPhee-Shaw, Erika

148

I'hofochonistry and I'hotohiologv, Vol. 58, No. 3, pp. 438445, 1993 Printed in the LJnited States. All nghls reserved  

E-Print Network [OSTI]

produced by: ( 1 ) pretreatment with sodium dithionite and mcthyl viologen followed by laser illumination is dependent on the redox state of the reaction center. When the electron acceptor QA of PSIl is in the ox

Govindjee

149

E-Print Network 3.0 - air argon carbon Sample Search Results  

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

min-1 to convert the amorphous as-prepared Fe... : "260-ARG" denotes as-prepared FeOx aerogels heated under argon flow at 260 C and ... Source: Ris National Laboratory...

150

Full regularity of the free boundary in a Bernoulli-type problem in two ...  

E-Print Network [OSTI]

v0(x0 + x) = o(|x|). Assuming the contrary, let rj ? 0 and yj ? Brj (x0) be ..... ate quasilinear operator, Calc. Var. Partial Differential Equations (2005), 128, DOI:.

mrladmin

2006-06-29T23:59:59.000Z

151

RALTR97028 Solving the trustregion subproblem  

E-Print Network [OSTI]

programming methods. When the number of variables is large, the most widely­used strategy is to trace the path for Computation and Information Atlas Centre Rutherford Appleton Laboratory Oxfordshire OX11 0QX June 11, 1997

Mihajlovic, Milan D.

152

DC SQUID spectrometers for nuclear quadrupole and low-field nuclear magnetic resonance spectroscopy  

E-Print Network [OSTI]

in Figure 2.1(a). The Josephson junction is damped by aNb-NbOX-Pb (570 In) Josephson junctions. The process beginsto define the two Josephson junctions, 2pmx2~m in size. Then

TonThat, D.H.

2011-01-01T23:59:59.000Z

153

Functionalized Methionine Polypeptides And Their Self Assembly  

E-Print Network [OSTI]

1.1: Schematic showing the self-assembly of M Ox (rac-L) yas well as their self-assembly into micelles. Both poly((Polypeptides And Their Self Assembly A thesis submitted in

Higgins, Robin

2013-01-01T23:59:59.000Z

154

Andrew Turner, Raul Pampin and Adrian Puiu CCFE-PR(13)38  

E-Print Network [OSTI]

Pla 2, Torres Diagonal Litoral B3, 08019 Barcelona, Spain #12;. #12;Neutronics Analysis of the ITER In Science Centre, Abingdon, Oxon, OX14 3DB, UK 2 F4E Fusion for Energy, Josep Pla 2, Torres Diagonal Litoral

155

THE UNSTEADY FLOW OF A WEAKLY COMPRESSIBLE FLUID IN A THIN POROUS LAYER  

E-Print Network [OSTI]

, Reading RG6 6AX, UK Email: s.langdon@reading.ac.uk Schlumberger Oilfield UK Plc, Wyndyke Furlong, Abingdon, OX14 1UJ, UK Email: gbusswell@abingdon.oilfield.slb.com Email: pgilchrist@abingdon.oilfield

Langdon, Stephen

156

E-Print Network 3.0 - actinide system inconsistencies Sample...  

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

of actinide metals Summary: heats of actinide metals M. J. Mortimer Chemistry Division, AERE Harwell, Didcot, Oxon, OX11 ORA, G... 'volution de ces grandeurs ainsi que celle de...

157

E-Print Network 3.0 - actinides exposure review Sample Search...  

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

of actinide metals Summary: heats of actinide metals M. J. Mortimer Chemistry Division, AERE Harwell, Didcot, Oxon, OX11 ORA, G... 'volution de ces grandeurs ainsi que celle de...

158

E-Print Network 3.0 - actinide alloys Sample Search Results  

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

of actinide metals Summary: heats of actinide metals M. J. Mortimer Chemistry Division, AERE Harwell, Didcot, Oxon, OX11 ORA, G... 'volution de ces grandeurs ainsi que celle de...

159

ag thin films: Topics by E-print Network  

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

MgO, Ref. 21 Marcon, Marco 2 Multi-level surface enhanced Raman scattering using AgOx thin film Physics Websites Summary: by applying laser-direct writing (LDW) technique on...

160

10.1098/rsta.2003.1269 T&T Proof 03TA2005 5 September 2003  

E-Print Network [OSTI]

Science, University of Oxford, Oxford OX1 3PJ, UK Programming robots and other autonomous systems in the area of cinema post- production (Pollefeys et al. 2000), where analysis of a stored film sequence

Oxford, University of

Note: This page contains sample records for the topic "ox yg enates" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

To link to this article: DOI: 10.1088/0957-4484/23/1/015603 URL: http://dx.doi.org/10.1088/0957-4484/23/1/015603  

E-Print Network [OSTI]

) deposited beforehand by magnetron sputtering. The plasma during the growth of the encapsulation SiOx Cy matrix are of increasing interest in many application fields such as solar cells [1, 2], sensors [3, 4

Mailhes, Corinne

162

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

E-Print Network [OSTI]

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,

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

1996-01-01T23:59:59.000Z

163

Biodiversity at St Anne's College  

E-Print Network [OSTI]

Biodiversity at St Anne's College CAN I VISIT ST ANNE'S COLLEGE? Yes! St Anne's grounds, visit http://www.stannes.ox.ac.uk/about/findus HOW IS ST ANNE'S HELPING BIODIVERSITY? Helping wildlife

164

Consistency of the Geometric Brownian Motion Model of Stock Prices with Asymmetric Information.  

E-Print Network [OSTI]

Engineering Quadrangle Princeton, NJ 08544-5263 Albina Danilova OCIAM Mathematical Institute University address correspondence to danilova@maths.ox.ac.uk. 1 #12;tic calculus and probability theory

Carmona, Rene

165

Fast curve fitting using neural networks C. M. Bishop and C. M. Roach  

E-Print Network [OSTI]

Fast curve fitting using neural networks C. M. Bishop and C. M. Roach Citation: Rev. Sci. Instrum Kingdom C. M. Roach AEA Technology,Culham Laboratory, (Euratom/UkAEA Fusion Association)Oxon OX14 3DB

166

Summary of Swedish Experiences on CNG and "Clean" Diesel Buses  

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

diesel (i.e. Euro II) with ox cat CNG buses in 1992 (Gothenburg); later also biogas Retrofit particulate filters (i.e. CRT TM ) in mid 1990's Environmental zones in...

167

airway cell cultures: Topics by E-print Network  

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

..... . 5.1.5 Preparing 4 liters of IX medium 5.2 lOX Stocks: Preparation checklist. 5.3 Media... Summers, Max D.; Smith, Gale E. 1987-01-01 151 75 Prostaglandins of the A Series...

168

animal cell culture: Topics by E-print Network  

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

..... . 5.1.5 Preparing 4 liters of IX medium 5.2 lOX Stocks: Preparation checklist. 5.3 Media... Summers, Max D.; Smith, Gale E. 1987-01-01 149 75 Prostaglandins of the A Series...

169

attract insect vectors: Topics by E-print Network  

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

..... . 5.1.5 Preparing 4 liters of IX medium 5.2 lOX Stocks: Preparation checklist. 5.3 Media... Summers, Max D.; Smith, Gale E. 1987-01-01 13 The attraction of entomophagous...

170

arabidopsis cell culture: Topics by E-print Network  

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

..... . 5.1.5 Preparing 4 liters of IX medium 5.2 lOX Stocks: Preparation checklist. 5.3 Media... Summers, Max D.; Smith, Gale E. 1987-01-01 187 75 Prostaglandins of the A Series...

171

a549 cell cultures: Topics by E-print Network  

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

..... . 5.1.5 Preparing 4 liters of IX medium 5.2 lOX Stocks: Preparation checklist. 5.3 Media... Summers, Max D.; Smith, Gale E. 1987-01-01 123 75 Prostaglandins of the A Series...

172

animal cell cultures: Topics by E-print Network  

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

..... . 5.1.5 Preparing 4 liters of IX medium 5.2 lOX Stocks: Preparation checklist. 5.3 Media... Summers, Max D.; Smith, Gale E. 1987-01-01 149 75 Prostaglandins of the A Series...

173

Motion estimation using the differential epipolar equation Dep. Inteligencia Artificial  

E-Print Network [OSTI]

Science University of Oxford 19 Parks Rd, Oxford (UK) lourdes@robots.ox.ac.uk P. Bustos Dep. Inform of Oxford 19 Parks Rd, Oxford (UK) ian@robots.ox.ac.uk Abstract We consider the motion estimation problem of the projection equation (t)m(t) = P(t)X = [Q(t) | T(t)] X, viz: ( + t + O(t2 ))(m + mt + O(t2 )) = ([Q | T] + [ Q

Baumela, Luis

174

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

175

Performance of cholesterol oxidase sequestered within reverse micelles formed in supercritical carbon dioxide  

SciTech Connect (OSTI)

The authors report the first results on an enzyme-induced reaction within the water core of reverse micelles that have been formed in supercritical CO{sub 2} (scCO{sub 2}). By using a perfluoropolyether ammonium carboxylate (PFPE) surfactant, the authors form reverse micelles in scCO{sub 2} with water cores and the authors show that the oxidation of cholesterol by cholesterol oxidase (ChOx) obeys Michaelis-Menten kinetics. The results of their experiments also show that (1) the optimum ChOx activity occurs when the molar ratio of H{sub 2}O-to-PFPE (R) exceeds {approximately}12, (2) the rate constant describing the conversion of the ChOx-cholesterol complex to product ({kappa}{sub cat,app}) is similar to values reported using reverse micelle systems formed in liquid alkanes, (3) the equilibrium constant that describes the ChOx-cholesterol complex dissociation (K{sub m,app}) is optimal at high R values, (4) the best-case K{sub m,app} is {approximately}2-fold better than the value reported using reverse micelles formed in liquid alkanes, (5) there is little change in the ChOx {kappa}{sub cat,app} and K{sub m,app} as the authors adjust the CO{sub 2} pressure between 100 and 260 bar, and (6) the ChOx was active within the PFPE water pool for at least 5 h; however, after 8 or more hours within the PFPE water pool, ChOx became temporarily inactive.

Kane, M.A.; Baker, G.A.; Pandey, S.; Bright, F.V.

2000-05-30T23:59:59.000Z

176

The effect of some dissolved constituents on the redox potential of water  

E-Print Network [OSTI]

4Laa&Xs?4 esSygea ~ashS?tgasa, Xaa&41&t&Iy' b&fes? e&als1- Lag ths ieaLN~ Swa a?&mt&4 aa4 ih& yg aa4 ssLXXLeali s?&4Laga?eea ebs&La&4 fecss ih& So&be?a a?tee, The ebsyeeok to ih& esssyle bobble eaa i&&b&L Tb&eeqysa Li &&a fLXX&4 &a4 yose4it&4 ic... R IAI IS D o Ial 0 Sl Sl NUMERICAL VALUES INDICATE pH 0 Zg0 300 400 SOO 800 700 Eh, mv. 50 The s44itiea of tbe ferrio iea to the se4i~ ohlori4e solatiea iaoreases tbo re4cec yoteatial of the solntiea. At a yU valse of 7, 00 the re4oa...

Wales, Robert David

2012-06-07T23:59:59.000Z

177

Relationship of the electrochemical potential of porous media with hydrocarbon saturation  

E-Print Network [OSTI]

Nr Saturation fgw) Sampl ~ W o C a' 120 lO e K 8 0 4 8 12 16 20 24 26 32 36 40 mt . 02 N MgSO4 Figure 22 Conductintetrtc Titration Sarnp!e LP I 280 4l t2 e 40 e I% 8 0 4 8 t2 t6 20 24 28 32 36 ml . 02 N %0604 Figum 23 Cordu~gmetric Titration... gamp'e LP2 290 x 160 E C e e K 0 0 4 0 12 16 20 24 ml . 02N MgSO4 Figure 24 Conducttmetrlc Tltraticn Sample LP3 2SD( re O x 1 g Q e' 1 g A e K 0 4 8 12 16 20 24 28 32 36 40 ml . 02 N YgSQ4 Figure 25 Cond~imetric Titretlcn Sample SF1...

Ortiz, Isaias

2012-06-07T23:59:59.000Z

178

Effects of soil treatments supplemented with two rates of magnesium sulfate on the availability of soil nutrients and on the yield and chemical composition of coastal Bermuda grass  

E-Print Network [OSTI]

Wean PPM of P in Soil Samples Collected in 1949 from Coast, al Bermuda Grass Plots Receiving Qifferent Rates and Combinations of N, F205, and MgS04. 7H20 g Treatments P N0 P0 1 Mean P0 1 Pl Mean N2 p$ Mean M80 1. 3 (8) jZ' 3. 4 2. 3 (16...) Nagnesium (Y&g) N xP N xNg PxNg Nxpxlig Replications 95 1 1 1 1 2 2 1 2 4& 857. 64. ="-" 9, 702. 2 5'-'? 13. 02 10. 67 14 & 113. 50?' " 319. 44 1, 435. 03 3. 38 964. 72 103. 68 8 00 17. 78 . 02 , 02 25, 87 . 58 2. 63 . 01 1. 77...

Evatt, Nathan S

2012-06-07T23:59:59.000Z

179

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

SciTech Connect (OSTI)

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.

Voyles, Paul [University of Wisconsin, Madison] [University of Wisconsin, Madison

2013-07-24T23:59:59.000Z

180

High temperature crystalline superconductors from crystallized glasses  

DOE Patents [OSTI]

A method of preparing a high temperature superconductor from an amorphous phase. The method involves preparing a starting material of a composition of Bi.sub.2 Sr.sub.2 Ca.sub.3 Cu.sub.4 Ox or Bi.sub.2 Sr.sub.2 Ca.sub.4 Cu.sub.5 Ox, forming an amorphous phase of the composition and heat treating the amorphous phase for particular time and temperature ranges to achieve a single phase high temperature superconductor.

Shi, Donglu (Downers Grove, IL)

1992-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "ox yg enates" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

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

E-Print Network [OSTI]

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.

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

2011-01-01T23:59:59.000Z

182

The cholesterol and lecithin requirement of the marine shrimp, Penaeus vannamei Boone  

E-Print Network [OSTI]

. . . . . 40 B CALCULATED AND ESTIMATED PROTEIN, FAT, CARBOHYDRATE, WATER, AND ASH CONTENT OF DIETS USED IN THE STUDY. . . . 41 C LIST OF DISTRIBUTORS OF PURIFIED DIET INGREDIENTS. . . . 44 D COMPOSITION OF AIN MINERAL MIXTURE 76. . 45 E COMPOSITION... was tested using levels of O. OX, 0. 5X, 1. 0X, 2. 0X, and 4. 0X soy lecithin with the oil not removed, and levels of OX, 1X, 2X, 4X, and 8% refined soy lecithin. The tests for interaction between cholesterol and lecithin were designed as a factorial...

Emery, Ann Elaine

1987-01-01T23:59:59.000Z

183

A distributed converging overland flow model: 1. Mathematical solutions  

E-Print Network [OSTI]

MODEL The kinematic wave equations of continuity and momentum for a converging section are [Singh, 1974] 889 890 SHERMAN AND SINGH: FLOW MODELING, 1 X Fig. 1. Geometry of converging overland flow model. Oh O(uh) uh Ot q- Ox - q(x, t) q- L -- x (3...)' Q = uh = a(x,t)h n (4) where L is the length of the converging section (Figure 1). For a specified rainfall duration T, q(x, t) = 0 when t > T. We assume that n > 1. Eliminating u in (3) and (4), .we get Oh q_ na(x t)h \\"- Oh Ot ' Ox a(x, t...

Sherman, Bernard; Singh, Vijay P.

184

Direct costing  

E-Print Network [OSTI]

on? See aooounting profess ion is LLvilel upon whether the yrinoiy3Les oontainel in the oonoeyt are aoeeptab1 e f ox the above purposes . Xt is genemXXg oonoslel that ths 1RQ 8 of lirsot sos'C ing oan be he 1 pfs1 to ~on eat in oontro31ing oosts... withdrew' This emphasis on profit moment has continued& aud it is still of great importanoe. Xt has increased in oomyleaL~ during the time of the decreasing value ef the doKLar~ awk account- ants are 'still striviug i'ox' a more useful and a mors...

Browning, Donald Bullock

1960-01-01T23:59:59.000Z

185

A metadata approach for clinical data management in translational genomics studies in breast cancer  

E-Print Network [OSTI]

Laboratory, Wolfson Building, Parks Road, Oxford, OX1 3QD, UK Email: Irene Papatheodorou* - ivp21@cam.ac.uk; Charles Crichton - Charles.Crichton@comlab.ox.ac.uk; Lorna Morris - ljm59@cam.ac.uk; Peter Maccallum - peter.maccallum@cancer.org.uk; METABRIC Group... Description Framework (RDF) [3,4] and the Web Ontology Language (OWL) [5] are still very much under development, they are already being applied widely in business, government, and scientific contexts [6]. Two Cancer Informatics projects, caBIG [7-10] and Can...

Papatheodorou, Irene; Crichton, Charles; Morris, Lorna; Maccallum, Peter; METABRIC Group, Molecular Taxonomy of Breast Cancer International Consortium; Davies, Jim; Brenton, James D; Caldas, Carlos

2009-11-30T23:59:59.000Z

186

Implicit Surface Tension Formulation with a Lagrangian Surface mesh on an Eulerian Simulation Grid  

E-Print Network [OSTI]

Implicit Surface Tension Formulation with a Lagrangian Surface mesh on an Eulerian Simulation Grid framework for forces on a Lagrangian mesh to the case of surface tension force, which when treated explicitly leads to a tight t = O(x3/2 ) time step restriction. By applying surface tension as an implicit

Thrun, Sebastian

187

A New Incompressibility Discretization for a Hybrid Particle MAC Grid Representation with Surface Tension  

E-Print Network [OSTI]

implicit surface tension for our novel hybrid discretization, we demonstrate preliminary results for both. Surface tension forces exacerbate the situation by imposing a strict t = O(x3/2 ) time step restriction formulation of surface tension by looking at the changes of curvature over time. This was simplified in [26

Fedkiw, Ron

188

The cell cycle of Leishmania: morphogenetic events and their implications for parasite biologymmi_7479 647..662  

E-Print Network [OSTI]

The cell cycle of Leishmania: morphogenetic events and their implications for parasite biologymmi, University of Oxford, South Parks Road, Oxford OX1 3RE, UK. Summary The cell cycle is central have two main life cycle morphologies: the intracellular amastigote in the mammalian host

Schnaufer, Achim

189

Zirconium-doped tantalum oxide high-k gate dielectric films  

E-Print Network [OSTI]

A new high-k dielectric material, i.e., zirconium-doped tantalum oxide (Zr-doped TaOx), in the form of a sputter-deposited thin film with a thickness range of 5-100 nm, has been studied. Important applications of this new dielectric material include...

Tewg, Jun-Yen

2005-02-17T23:59:59.000Z

190

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

E-Print Network [OSTI]

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.

W. Yuan; J. Siebert; W. Brinkmann

1998-05-09T23:59:59.000Z

191

Density change and viscous flow during structural relaxation of plasma-enhanced chemical-vapor-deposited silicon oxide films  

E-Print Network [OSTI]

University, Boston, Massachusetts 02215 (Received 5 May 2004; accepted 12 July 2004) The structural varying from 1 to 40 m were studied, as certain demanding applications in microelectromechanical systems investigation of the mechanical response and property changes of the PECVD SiOx films in three distinct

192

Using Reconstructed Dust Climatology to Study the Impacts of Martian Dust Storms on Dynamics  

E-Print Network [OSTI]

Using Reconstructed Dust Climatology to Study the Impacts of Martian Dust Storms on Dynamics L@atm.ox.ac.uk) Abstract We have reconstructed the climatology of the dust on Mars using available retrievals and estimates) a reconstruction of the dust optical depth climatology based on weighted gridding for Martian years 24

Cambridge, University of

193

6, 93159349, 2006 Seasonality of O3  

E-Print Network [OSTI]

(nitrogen oxide (NO) + nitrogen dioxide (NO2)=NOx) oxidized to NOz (total reac- tive nitrogen (NOy (EN), defined as the net number of ozone molecules produced per molecule of nitrogen ox- ides.s.l. This dataset is a unique long-term data series of nitrogen levels in the free troposphere over Central Europe

Paris-Sud XI, Université de

194

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]

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

Goldschmidt, Christina

195

Standards Compliant Software Development Wolfgang Emmerich, Anthony Finkelstein  

E-Print Network [OSTI]

Standards Compliant Software Development Wolfgang Emmerich, Anthony Finkelstein Interoperable. Oxford Science Park Oxford OX4 4GA, UK 100010.3303@compuserve.com Abstract Software engineering standards determine practices that `compliant' software processes shall follow. Standards generally de ne practices

Finkelstein, Anthony

196

10.1261/rna.2753211Access the most recent version at doi: 2011 17: 1204-1212 originally published online May 24, 2011RNA  

E-Print Network [OSTI]

, Colorado 80309, USA 9 Department of Chemistry, Bowling Green State University, Bowling Green, Ohio 43403, USA 10 Department of Mathematics and Statistics, Bowling Green State University, Bowling Green, Ohio,6 CRAIG L. ZIRBEL,10 and ALAIN LAEDERACH4,11 1 Oxford e-Research Center, University of Oxford, OX1 3

Das, Rhiju

197

Evidence for catalytic water oxidation by a dimanganese tetrakis-Schiff base macrocycle  

E-Print Network [OSTI]

have been synthesized to mimic the structure of the Oxygen Evolving Complex (OEC), a Mn4OxCa cluster to the manganese centers by a l-carboxylato axial ligand in an analogous Schiff base complex [MnII 2LAc]+ lowers Mn(II) [17]. These macrocycles provided a planar N4O2 coordination environment for two metal centers

Dinolfo, Peter H.

198

Semiconducting chalcogenide buffer layer for oxide heteroepitaxy on Si,,001...  

E-Print Network [OSTI]

controlled laminar growth of a crystalline transition metal oxide on Si 001 without SiOx or silicide/or silicides at the Si/oxide interface. Subnanometer buffer layers can prevent interface reac- tions while, also enables flexible strain relief. We observe nei- ther oxide nor silicide formation at the buried Si

Olmstead, Marjorie

199

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

E-Print Network [OSTI]

of the building heating and cooling demands. In addition to generation, DG systems can include electric the system include lead-acid batteries, photovoltaic cells, solid ox- ide fuel cells, heat exchangers purchasing electricity from a centralized utility, a building owner can invest in an on-site system to supply

200

Spectroscopic characterization of monometallic and bimetallic model catalysts  

E-Print Network [OSTI]

is the characterization of the surface composition, morphology, and electronic/geometric structure of the following catalysts: Au/TiOx, Au-Pd/Mo(110), Au- Pd/SiO 2, Cu-Pd/Mo(110), and Sn/Pd(100). Structure-reactivity correlations during surface-alloy formation...

Luo, Kai

2009-06-02T23:59:59.000Z

Note: This page contains sample records for the topic "ox yg enates" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

Uncertainties of predictions from parton distributions. 2. Theoretical errors.  

E-Print Network [OSTI]

,1 a Institute for Particle Physics Phenomenology, University of Durham, DH1 3LE, UK b Rutherford Appleton Laboratory, Chilton, Didcot, Oxon, OX11 0QX, UK c Cavendish Laboratory, University of Cambridge, Madingley Road, Cambridge, CB3 0HE, UK Abstract...

Martin, A D; Roberts, R G; Stirling, W James; Thorne, Robert S

202

Fuel Cell Reformer Emissions TIAX, LLC 1601 S. De Anza Blvd  

E-Print Network [OSTI]

, without a fuel cell. Fuel Processor (FP) PrOx Some water is condensed in this area and dropped out to help condition gases for the fuel cell (exact location of the condenser is proprietary). Exhaust Acurex Particulate Filter To Nuvera CEMs (CO, NOx, THC) Steam To Nuvera GC (H2,, O2,, N2,, CH4, CO, CO2) To TIAX CEMs

203

Research on fusion neutron sources M. P. Gryaznevich  

E-Print Network [OSTI]

proportional to plasma volume) can be large enough so that the plasma can be sufficiently hot for thermal, OXON, OX133DB UK Abstract. The use of fusion devices as powerful neutron sources has been discussed for decades. Whereas the successful route to a commercial fusion power reactor demands steady state stable

204

Journal of Nuclear Materials, Volumes 367-370, 2007, 1586-1589 Designing Optimised Experiments for the International Fusion  

E-Print Network [OSTI]

Journal of Nuclear Materials, Volumes 367-370, 2007, 1586-1589 Designing Optimised Experiments for the International Fusion Materials Irradiation Facility R. Kemp1 G.A. Cottrell2 and H.K.D.H. Bhadesia1 1 Department EURATOM/UKAEA Fusion Association, Culham Science Centre, Abingdon, Oxon., OX14 3DB, UK Abstract

Cambridge, University of

205

Criteria for improving the sensitivity of the twin T bridge as a nuclear magnetic resonance detector  

E-Print Network [OSTI]

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...

Hoffman, William Low

1956-01-01T23:59:59.000Z

206

Dynamic Sensitivity of ATP-sensitive K Channels to ATP* Received for publication, March 16, 2001, and in revised form, April 17, 2001  

E-Print Network [OSTI]

Dynamic Sensitivity of ATP-sensitive K Channels to ATP* Received for publication, March 16, 2001, Oxford OX1 3PT, United Kingdom ATP and MgADP regulate KATP channel activity and hence potentially couple-cell activity can be observed with widely varying apparent submembrane [ATP] ([ATP]sub). Meta- bolic inhibition

Pike, Linda J.

207

Comparison of Thyristor-Rectifier with Hybrid Filter and Chopper-Rectifier for High-Power, High-Current Application  

E-Print Network [OSTI]

performance, efficiency, size and cost for an industrial load with given sys- tem specifications. 1 and chemical industries [1]-[6]. Chemical electrolysis is used in metal refining (from impure stock) and metal winning (from ore) [2]. Hydrogen, chlorine, sodium hydroxide, sodium chlorate, ox- ygen and adiponitrile

Paderborn, Universität

208

How do communication systems emerge? Thomas C. Scott-Phillips1,*, Richard A. Blythe2, Andy Gardner3,4  

E-Print Network [OSTI]

How do communication systems emerge? Thomas C. Scott-Phillips1,*, Richard A. Blythe2, Andy Gardner3, Oxford OX1 3BJ, UK Communication involves a pair of behaviours--a signal and a response--that are functionally interdepen- dent. Consequently, the emergence of communication involves a chicken-and-egg problem

West, Stuart

209

J. R. Harrison, G. M. Fishpool and A. Kirk CCFE-PR(13)33  

E-Print Network [OSTI]

, Abingdon, Oxon, OX14 3DB, UK. Copy of Paper submitted to Journal of Nuclear Materials, Vol.438, Supplement ENERGY AUTHORITY The following article appeared in Journal of Nuclear Materials, Vol.438, Supplement deposition, Scaling law *Corresponding Author Address: EURATOM/CCFE Fusion Association, Culham Science Centre

210

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

E-Print Network [OSTI]

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

Zhang, Yunfei

211

ACCELERATOR TUBES H. R. McK. HYDER  

E-Print Network [OSTI]

ACCELERATOR TUBES H. R. McK. HYDER Nuclear Physics Laboratory, University of Oxford, Oxford OX1 3RH The characteristics and performance of accelerator tubes required by the new generation of large tandem accelerators conclusions are drawn about future progress and developments. ACCELERATOR TUBES AND INSULATORS. 1

Paris-Sud XI, Université de

212

BRASENOSE COLLEGE 8-HOUR STIPENDIARY LECTURERSHIP IN PHILOSOPHY  

E-Print Network [OSTI]

BRASENOSE COLLEGE OXFORD 8-HOUR STIPENDIARY LECTURERSHIP IN PHILOSOPHY FURTHER PARTICULARS in Philosophy at Brasenose College, Oxford. The post is tenable from 1 October 2013 (finishing date: 31st information about the College can be found at www.bnc.ox.ac.uk. Brasenose has a strong tradition in Philosophy

Oxford, University of

213

Vinpocetine attenuates lipid accumulation and atherosclerosis formation  

SciTech Connect (OSTI)

Highlights: Vinpocetine attenuates hyperlipidemia-induced atherosclerosis in a mouse model. Vinpocetine antagonizes ox-LDL uptake and accumulation in macrophages. Vinpocetine blocks the induction of ox-LDL receptor LOX-1 in vitro and in vivo. -- Abstract: Atherosclerosis, the major cause of myocardial infarction and stroke, is a chronic arterial disease characterized by lipid deposition and inflammation in the vessel wall. Cholesterol, in low-density lipoprotein (LDL), plays a critical role in the pathogenesis of atherosclerosis. Vinpocetine, a derivative of the alkaloid vincamine, has long been used as a cerebral blood flow enhancer for treating cognitive impairment. Recent study indicated that vinpocetine is a potent anti-inflammatory agent. However, its role in the pathogenesis of atherosclerosis remains unexplored. In the present study, we show that vinpocetine significantly reduced atherosclerotic lesion formation in ApoE knockout mice fed with a high-fat diet. In cultured murine macrophage RAW264.7 cells, vinpocetine markedly attenuated oxidized LDL (ox-LDL) uptake and foam cell formation. Moreover, vinpocetine greatly blocked the induction of ox-LDL receptor 1 (LOX-1) in cultured macrophages as well as in the LOX-1 level in atherosclerotic lesions. Taken together, our data reveal a novel role of vinpocetine in reduction of pathogenesis of atherosclerosis, at least partially through suppressing LOX-1 signaling pathway. Given the excellent safety profile of vinpocetine, this study suggests vinpocetine may be a therapeutic candidate for treating atherosclerosis.

Cai, Yujun [Aab Cardiovascular Research Institute, Department of Medicine, University of Rochester, 601 Elmwood Ave, Rochester, NY 14642 (United States)] [Aab Cardiovascular Research Institute, Department of Medicine, University of Rochester, 601 Elmwood Ave, Rochester, NY 14642 (United States); Li, Jian-Dong [Center for Inflammation, Immunity and Infection, and Department of Biology, Georgia State University, Atlanta, GA 30303 (United States)] [Center for Inflammation, Immunity and Infection, and Department of Biology, Georgia State University, Atlanta, GA 30303 (United States); Yan, Chen, E-mail: Chen_Yan@urmc.rochester.edu [Aab Cardiovascular Research Institute, Department of Medicine, University of Rochester, 601 Elmwood Ave, Rochester, NY 14642 (United States)] [Aab Cardiovascular Research Institute, Department of Medicine, University of Rochester, 601 Elmwood Ave, Rochester, NY 14642 (United States)

2013-05-10T23:59:59.000Z

214

THE MOTION OF SUPERCONDUCTING VORTICES IN THIN FILMS OF VARYING THICKNESS  

E-Print Network [OSTI]

with superconductor/vacuum interfaces is considered. A vortex is #12;rst shown to intersect such an interface normallyTHE MOTION OF SUPERCONDUCTING VORTICES IN THIN FILMS OF VARYING THICKNESS S.J. CHAPMAN #3; D.R. HERON y MATHEMATICAL INSTITUTE OXFORD OX1 3LB UK Abstract. The interaction of superconducting vortices

Chapman, Jon

215

Species-specific responses of Late Quaternary megafauna to climate and humans  

E-Print Network [OSTI]

Pleistocene musk ox (Ovibos moschatus) population dynamics. P Nat Acad Sci. 2010; 107:5675 5680. 11. Stiller M, et al. Withering away25,000 years of genetic decline preceded cave bear extinction. Mol Biol Evol. 2010; 27:975978. [PubMed: 20335279] 12. Barnes...

Lorenzen, Eline D.; Nogué s-Bravo, David; Orlando, Ludovic; Weinstock, Jaco; Binladen, Jonas; Marske, Katharine A.; Ugan, Andrew; Borregaard, Michael K.; Gilbert, M. Thomas P.; Nielsen, Rasmus; Ho, Simon Y. W.; Goegel, Ted; Graf, Kelly E.; Byers, David; Stenderup, Jesper T.; Rasmussen, Morten; Campos, Paula F.; Leonard, Jennifer A.; Koepfli, Klaus-Peter; Froese, Duane; Zazula, Grant; Stafford, Thomas W. Jr.; Aaris-Sø rensen, Kim; Batra, Persaram; Haywood, Alan M.; Singarayer, Joy S.; Valdes, Paul J.; Boeskorov, Gennady; Burns, James A.; Davydov, Sergey P.; Haile, James; Jenkins, Dennis L.; Kosintsev, Pavel; Kuznetsova, Tatyana; Lai, Xulong; Martin, Larry D.; McDonald, H. Gregory; Mol, Dick; Meldgaard, Morten; Munch, Kasper; Stephan, Elisabeth; Sablin, Mikhail; Sommer, Robert S.; Sipko, Taras; Scott, Eric; Suchard, Marc A.; Tikhonov, Alexei; Willerslev, Rane; Wayne, Robert K.; Cooper, Alan; Hofreiter, Michael; Sher, Andrei; Shapiro, Beth; Rahbek, Carsten; Willerslev, Eske

2014-11-17T23:59:59.000Z

216

Generating Structurally Complex Test Cases by Data Mutation: A Case Study of Testing an Automated Modelling Tool  

E-Print Network [OSTI]

- 1 - Generating Structurally Complex Test Cases by Data Mutation: A Case Study of Testing Brookes University, Oxford OX33 1HX, UK Email: hzhu@brookes.ac.uk ABSTRACT Generation of adequate test cases is difficult and expensive, especially for testing software systems whose input is structurally

Zhu, Hong

217

Discrete Gene Regulatory Networks (dGRNs): A novel approach to configuring sensor networks  

E-Print Network [OSTI]

and speed (sensor variables). The question is: how is this best done? A centralized optimization approach.lastname@comlab.ox.ac.uk Abstract--The operation of a sensor network is determined by a large number of parameters) it is general-purpose, and can be applied to a variety of parameter tuning problems; and 2) it generates

Jeavons, Peter

218

pH Effects on the structure of biogenic Mn-oxides Mengqiang Zhu, mzhu@UDel.Edu1  

E-Print Network [OSTI]

metals. In this study, pH effects were investigated in CaCl2 and NaCl solutions at pH 6, 7 and 8 for 48. The structure of BioMnOx preformed at pH 8 in a CaCl2 solution was not modified by lower pHs of the CaCl2

Sparks, Donald L.

219

Andy Bullock and Mike Acreman Hydrology and Earth System Sciences, 7(3), 358389 (2003) EGU  

E-Print Network [OSTI]

Andy Bullock and Mike Acreman 358 Hydrology and Earth System Sciences, 7(3), 358389 (2003) © EGU The role of wetlands in the hydrological cycle Andy Bullock1 and Mike Acreman2 1 Independent Consultant, Ledbury, Herefordshire, HR8 2DX, UK 2 Centre for Ecology and Hydrology, Wallingford, Oxon. OX10 8BB, UK

Paris-Sud XI, Université de

220

Applying MODFLOW to wet grassland in-field habitats: a case study from the Pevensey Levels, UK Hydrology and Earth System Sciences, 7(1), 4355 (2003) EGU  

E-Print Network [OSTI]

Hydrology and Earth System Sciences, 7(1), 43­55 (2003) © EGU Applying MODFLOW to wet grassland in and Hydrology, Wallingford, OX10 8BB, UK Email for corresponding author: rbb@ceh.ac.uk Abstract Historical drainage improvements have created complex hydrological regimes in many low-lying, wet coastal grassland

Paris-Sud XI, Université de

Note: This page contains sample records for the topic "ox yg enates" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

Integration of spatial datasets to suppor t the review of hydrometric networks and the identification of representative catchments Hydrology and Earth System Sciences, 8(6), 11031117 (2004) EGU  

E-Print Network [OSTI]

and the identification of representative catchments 1103 Hydrology and Earth System Sciences, 8(6), 11031117 (2004) © EGU of representative catchments C.L.R. Laize Centre for Ecology and Hydrology, Wallingford, Oxfordshire OX10 8BB, UK E into account the reduction in hydrological uncertainty brought about by the data added since the last network

Boyer, Edmond

222

Recession-based hydrological models for estimating low flows in ungauged catchments in the Himalayas Hydrology and Earth System Sciences, 8(5), 891902 (2004) EGU  

E-Print Network [OSTI]

Recession-based hydrological models for estimating low flows in ungauged catchments in the Himalayas 891 Hydrology and Earth System Sciences, 8(5), 891902 (2004) © EGU Recession-based hydrological.R. Young1 and S.R. Kansakar2 1 Centre for Ecology and Hydrology,Wallingford, Oxfordshire, OX10 8BB, UK 2

Paris-Sud XI, Université de

223

A review of "Sir John Harington and the Book as Gift." by Jason Scott-Warren  

E-Print Network [OSTI]

all be grateful for the delicacy, wisdom, and insight with which he has treated this troubling topic. Jason Scott-Warren. Sir John Harington and the Book as Gift. Ox- ford and New York: Oxford University Press, 2001. xii + 273 pp. Review by EUGENE D...

Eugene D. Hill

2002-01-01T23:59:59.000Z

224

GLOBETROTTER THE QUEEN'S COLLEGE  

E-Print Network [OSTI]

. Further plans are in progress and we have commissioned a sustainability audit. The College is very proudGLOBETROTTER THE QUEEN'S COLLEGE JUNE 2012 Old Members' Office · The Queen's College · Oxford · OX1 next week for a Queen's College reunion event, details as follows: Venue: ZUMA Level 5 & 6

Capdeboscq, Yves

225

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

E-Print Network [OSTI]

of the doped films were explained by their compositions and bond structures. The Hf-doped TaOx film is a potential high-k gate dielectric for future MOS transistors. A 5 ?? tantalum nitride (TaNx) interface layer has been inserted between the Hf-doped Ta...

Lu, Jiang

2007-04-25T23:59:59.000Z

226

BIOINFORMATICS APPLICATIONS NOTE Vol. 27 no. 8 2011, pages 11701171  

E-Print Network [OSTI]

of Oxford, Oxford OX1 3QU, UK Associate Editor: Olga Troyanskaya ABSTRACT Motivation: The importance of biologically realistic stochastic simulations urgently requires development of efficient software. We present a new software tool STOCHSIMGPU that exploits graphics processing units (GPUs) for parallel stochastic

Maini, Philip K.

227

PORTIONS OF THIS REPORT ARE ILLEGIBLE. It -/ -' has been reoror(uced from the best available  

E-Print Network [OSTI]

Energy Division Oak Ridge National Laboratory Oak Ridge, Tennessee 37830 RiiE CpV 'e048;3 tcOX se. Minturn, Ph.D. Edmund A. Nephew, M.S. Oak Ridge National Laboratory Oak Ridge, Tennessee ABSTRACT in a program managed by the Oak Ridge National Laboratory, ORNL, in Oak Ridge, Tennessee. As part

Oak Ridge National Laboratory

228

Phytoplankton Photosynthesis  

E-Print Network [OSTI]

Phytoplankton Photosynthesis RedOx Reactions Some more history Quantum Yields Photosynthetic Units Physical Structure The Z-Scheme The Calvin-Benson Cycle Measuring Photosynthesis #12) Heat 3) Photosynthesis So in our new terms, the QUANTUM YIELD of photosynthesis goes up as the quantum

Kudela, Raphael M.

229

College of Arts & Science http://artsandscience.usask.ca/  

E-Print Network [OSTI]

College of Arts & Science http://artsandscience.usask.ca/ Department of Music TERM POSITION. For more information about the Department of Music visit http://www.usask.ca/music/. The University College of Arts and Science 28 Campus Drive Saskatoon, SK S7N OX1 (306) 966-8352 gerald.langner@usask.ca

Saskatchewan, University of

230

Growth of Ag icosahedral nanocrystals on a SrTiO3,,001... support Fabien Silly and Martin R. Castella  

E-Print Network [OSTI]

. Castella Department of Materials, University of Oxford, Parks Road, Oxford OX1 3PH, United Kingdom Received identification of the supported shape of the icosahedral form. 2005 American Institute of Physics. DOI: 10 positions. Therefore, for sufficiently small particles with a large surface area-to-volume ratio, multiply

Castell, Martin

231

Parallel Computation In Econometrics: A Simplified Approach Jurgen A. Doornik  

E-Print Network [OSTI]

Parallel Computation In Econometrics: A Simplified Approach Jurgen A. Doornik , Neil Shephard Parallel computation has a long history in econometric computing, but is not at all wide spread. We believe optimization; Econometrics; High-performance computing; Matrix-programming language; Monte Carlo; MPI; Ox

Wolfe, Patrick J.

232

Theoretical Population Biology 74 (2008) 233250 Contents lists available at ScienceDirect  

E-Print Network [OSTI]

reserved. 1. Introduction The impact of environmental variation on genetic polymor- phism has beenDirect Theoretical Population Biology journal homepage: www.elsevier.com/locate/tpb Environmental variation, University of Oxford, Oxford OX1 3TG, United Kingdom a r t i c l e i n f o Article history: Received 27

Taylor, Jay

233

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]

BIOMASS BURNING IN THE AMAZON: LINKS BETWEEN BURNING, SCIAMACHY TRACE GASES, AND AEROSOL, OX1 3PU, UK 2: Science and Technology Facilities Council Rutherford Appleton Laboratory, Harwell://www.iup.uni-bremen.de/sciamachy/ · ESA (A)ATSR World Fire Atlas: http://dup.esrin.esa.it/ionia/wfa/index.asp · MODIS Fire and Thermal

Oxford, University of

234

Page 260 Courses: Biology (BIOL) Sonoma State University 2012-2013 Catalog BIOL 307 Human nutrItIOn (3)  

E-Print Network [OSTI]

, environmental, societal and psychosocial aspects of sexually transmitted diseases. Satisfies GE, category B3 course in beginning chemistry. BIOL 308 EnvIrOnmEntaL tOxIcOLOgy (3) Lecture, 3 hours. Information needed to formulate a philosophy of chemical use: the nature of the interaction of toxicants and living organisms

Ravikumar, B.

235

Journal of Chromatography A, 1042 (2004) 113121 Simultaneous determination of fluoroquinolone, sulfonamide, and  

E-Print Network [OSTI]

chromatography­electrospray mass spectrometry Jay E. Renew, Ching-Hua Huang School of Civil and Environmental Large quantities of antibiotics are administered to hu- mans and animals to treat diseases wastewater effluents. On the other hand, abiotic degradation including photolysis [14­17] and chemical ox

Huang, Ching-Hua

236

WILLIAM DONALD HAMILTON 1 August 1936 --7 March 2000  

E-Print Network [OSTI]

WILLIAM DONALD HAMILTON 1 August 1936 -- 7 March 2000 Biogr. Mems Fell. R. Soc. Lond. 50, 109­132 (2004) #12;#12;WILLIAM DONALD HAMILTON 1 August 1936 -- 7 March 2000 Elected FRS 1980 BY ALAN GRAFEN Department of Zoology, South Parks Road, Oxford OX1 3PS, UK INTRODUCTION William Donald Hamilton was born

Grafen, Alan

237

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]

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

Goddard III, William A.

238

5 Subgroups of p -bounded groups  

E-Print Network [OSTI]

valuated modules which come from (onite) hung trees. There are inonite-rank indecomposable). As pa + ph 2 B(n + 2), we may assume that pa 2 B(n + 2) by induction on the order of a + h. As va = k values. 2 Finite valuated trees By a tree we will mean a valuated tree with values in !. To ox

Richman, Fred

239

A. La Rosa Lecture Notes APPLIED OPTICS  

E-Print Network [OSTI]

variation of the electric field of the incident radiation Since the corresponding Poynting vector is given ox , which will depend on the electric field amplitude of the incident radiation. So, we need to find electrical charge emits radiation; the latter is camouflaged in the parameter . Note 2: Equation (11

240

Cell, Vol. 71, 107-I 18, October 2, 1992, Copyright 0 1992 by Cell Press The Structure of Human M  

E-Print Network [OSTI]

ox- ygen-mediated free radical damage, has been deter- mined. Within each subunit, both the N tetrameric in- terfaces that stabilize the active sites. Structurally al- tered polymorphic variants with reduced activity, such as tetrameric interface mutant Me-58 to Thr, may pro- duce not only an early

Borgstahl, Gloria

Note: This page contains sample records for the topic "ox yg enates" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

ORNL/HTSPC-20 ORNL SUPERCONDUCTING TECHNOLOGY PROGRAM  

E-Print Network [OSTI]

........................................................................... vi Section 1: Wire Development ORNL ­ AMSC CRADA to develop RABiTS/MOD based 2G wire ........................................ 1-1 ORNL ­ SuperPower CRADA to develop IBAD/MOCVD based 2G wire ............................... 1-7 ORNL ­ MetOx CRADA to characterize All-MOCVD 2G wire.............................................. 1

242

MYUNGHWAN PARK 6200 Westchester Park Drive, APT 1510, College Park, Maryland 20740  

E-Print Network [OSTI]

RuOx, M. Park Page 1/5 #12; Developed a low power voltage regulator for energy harvesting power system. Assisted in integration of the energy harvesting power system of battery, voltage regulator effect of microwave CMOS circuits. Built numerical and Berkeley Short-channel IGFET(BSIM) model

Lathrop, Daniel P.

243

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

E-Print Network [OSTI]

Sensors and Actuators B 118 (2006) 135­141 Low temperature indium oxide gas sensors M. Sucheaa rights reserved. Keywords: Metal oxide thin films; InOx; Gas sensors; Ozone 1. Introduction The interest's attractive for many areas such as transparent electrodes for solar cells and flat panel displays

244

Biodiversity Toolkit Why we DON'T DIG PEAT  

E-Print Network [OSTI]

Biodiversity Toolkit Peat free Why we DON'T DIG PEAT The collegiate University is working to help the environment and wildlife by phasing out its use of products containing peat, such as compost and soil improver.admin.ox.ac.uk/estates/environment/biodiversity Cut your carbon emissions Wildlife living in peat bogs includes foxes, Irish hares, pygmy shrews, red

Melham, Tom

245

Rev. sci. tech. Off. int. Epiz., 2008, 27 (2), 00-00 Predicted climate changes for the years to come  

E-Print Network [OSTI]

Rev. sci. tech. Off. int. Epiz., 2008, 27 (2), 00-00 Predicted climate changes for the years 3PU, United Kingdom. E-mail: stoned@atm.ox.ac.uk (2) Tyndall Centre for Climate Change Research community to produce predictions of future climate change. Predictions for the next few decades

246

Active control of the resistive wall mode with power saturation Li Li, Yue Liu, and Yueqiang Liu  

E-Print Network [OSTI]

Active control of the resistive wall mode with power saturation Li Li, Yue Liu, and Yueqiang Liu://pop.aip.org/about/rights_and_permissions #12;Active control of the resistive wall mode with power saturation Li Li,1,a) Yue Liu,1 and Yueqiang, 116024, People's Republic of China 2 Euratom/CCFE Fusion Association, Culham Science Centre, Abingdon OX

247

Lab Process AreaWhere CORAL Name It is: It does: Maker/Model Units per:(self-run) if staff EBL e-beam write24-041 Elionix 125 keV, hi-res e-beam writer Elionix F-125 7 hr 7  

E-Print Network [OSTI]

Lab Process AreaWhere CORAL Name It is: It does: Maker/Model Units per:(self-run) if staff EBL e, bakes 8 hr 12 EML photo photo coater-EML spinner coats PR Solitec 8 hr 12 EML metrologyhall dektak EML diffusion Resonetics rm OxidationTube tube furnace wet & dry ox, anneals, bakesLindberg 8 hr 12

Culpepper, Martin L.

248

Asymmetric radiative damping of low shear toroidal Alfvn eigenmodes R. M. Nyqvist and S. E. Sharapov  

E-Print Network [OSTI]

by the American Institute of Physics. Related Articles Influence of electromagnetic radiation on the power balance, Sweden 2 EURATOM/CCFE Fusion Association, Culham Science Centre, Abingdon OX14 3DB, United Kingdom of toroidicity-induced Alfven eigenmodes (TAEs) in tokamaks, caused by coupling to the kinetic Alfven wave (KAW

249

Correspondence Non-codingRNA  

E-Print Network [OSTI]

and is eliminated." Henry Harris University of Oxford, UK. henry.harris@path.ox.ac.uk Oil-palm concerns in Brazilian protection (APPs). One proposal is that plantations of oil palm (Elaeis guineensis), which are rapidly. Trends Ecol. Evol. 23, 538­545; 2008) shows that oil-palm plantations have a considerable impact

Lees, Alexander

250

Topics in Computational Biology Iceland 2.6.9-6.6.9  

E-Print Network [OSTI]

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

Goldschmidt, Christina

251

Astronomical Data Analysis Software and Systems XVI D1.1 ASP Conference Series, Vol. XXX, 2006  

E-Print Network [OSTI]

with other environments, like the VO, and co­operating with specialised tools is clearly desirable, so we, Chilton, Didcot, Oxfordshire, OX11 0QX, UK Tim Jenness, Jamie Leech & Frossie Economou Joint Astronomy the PLASTIC protocol has been used to inter­operate with VO­enabled applications. 1. Introduction The JAC, has

Taylor, Mark

252

ATOMIC-LAYER-DEPOSITED ALUMINUM OXIDE FOR THE SURFACE PASSIVATION OF HIGH-EFFICIENCY SILICON SOLAR CELLS  

E-Print Network [OSTI]

ATOMIC-LAYER-DEPOSITED ALUMINUM OXIDE FOR THE SURFACE PASSIVATION OF HIGH-EFFICIENCY SILICON SOLAR to those measured on reference cells passivated by an aluminum-annealed thermal SiO2, while those of the Al of aluminum ox- ide (Al2O3) grown by atomic layer deposition (ALD) pro- vide an excellent level of sur

253

Genet. Sel. Evol. 33 (2001) 417432 417 INRA, EDP Sciences, 2001  

E-Print Network [OSTI]

Genetics Unit, University of Agricultural Sciences and Veterinary Medicine, 3400 Cluj Napoca, Romania b International Group, Fyfield Wick, OX13 5NA, UK d Agricultural Research Station of Turda, Romania (Received 7 and the phenotype of the breed. These breeds are part of a conservation programme in Romania and marker information

Boyer, Edmond

254

Instructions for use Role of Cerium Oxide in the Enhancement of Activity for the Oxygen  

E-Print Network [OSTI]

activity for various fuel cell reactions, such as the hydrogen oxidation reaction (HOR),4 oxygen reduction. Recently, CeOx has been also utilized as a cocatalyst with Pt catalyst for ORR in PEM fuel cells.17 at the Pt oxide formation potential. INTRODUCTION Fuel cells, especially polymer electrolyte membrane (PEM

Tsunogai, Urumu

255

UPWELLING IN THE COSTA RICA DOME BY KLAUS WYRTKI  

E-Print Network [OSTI]

. This current, the Costa Rica Coastal Current, and parts of the North Equatorial Current form a cyclonic circu'the horizontal circula~ion. The upwelling in the dome is caused by the cyclonic flow around the dome. When survey a deep-reaching" eddy transporting lOX 1018 cm.a/sec. "appeared to be separated and to drift north

256

Cavitation-induced ignition of cryogenic hydrogen-oxygen fluids V. V. Osipov,1,a  

E-Print Network [OSTI]

Cavitation-induced ignition of cryogenic hydrogen-oxygen fluids V. V. Osipov,1,a C. B. Muratov,2 E-ignite in the process of their sudden mixing. Here, we propose a cavitation-induced self-ignition mechanism that may a cavitation-induced self- ignition mechanism of cryogenic H2/Ox fluids. Cavitation is the formation

Muratov, Cyrill

257

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

E-Print Network [OSTI]

-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...

Kuehler, Eric Anthony

1995-01-01T23:59:59.000Z

258

Initial growth stages of titanium and barium oxide films on SrTiO3(001) Chen Wu, Karen Kruska, Martin R. Castell  

E-Print Network [OSTI]

used in catalysis [13], gas sensing [46] and solar energy conversion [79], while BaO finds, Martin R. Castell Department of Materials, University of Oxford, Parks Road, Oxford OX1 3PH, UK a b applications in- cluding high current density cathodes [1012], thermionic energy converters [13] and optical

Castell, Martin

259

2013 UNITED KINGDOM ATOMIC ENERGY AUTHORITY The following article appeared in Journal of Nuclear Materials, Vol.439, Issues 1-3, August  

E-Print Network [OSTI]

© 2013 UNITED KINGDOM ATOMIC ENERGY AUTHORITY The following article appeared in Journal of Nuclear temperatures, reaction path (i) (sinks) dominates and at a high dose rates and/or low irradiation temperature for Fusion Energy (CCFE) Abingdon, Oxfordshire OX14 3DB, UK Name: Christopher Hardie Address: Department

260

Synthesis, Structural Characterization, and Catalytic Properties of Tungsten-Exchanged Weiping Ding, George D. Meitzner, David O. Marler,| and Enrique Iglesia*  

E-Print Network [OSTI]

exchanged W/H-ZSM5. 1. Introduction Transition metal ions (e.g., Mo, W, V, Fe, Cr) loaded onto several between oxides or carbides of Mo and W. The synthesis of exchanged WOx precursors and their subsequent. They detected carbidic carbon on Mo/H-ZSM5 and showed that MoOx species reduce almost to Mo0 during reaction.10

Iglesia, Enrique

Note: This page contains sample records for the topic "ox yg enates" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

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

E-Print Network [OSTI]

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

Oxford, University of

262

CSP is expressive enough for A.W. Roscoe  

E-Print Network [OSTI]

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

Oxford, University of

263

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

E-Print Network [OSTI]

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

Oxford, University of

264

relatively recent trend in structure and bridge design is to incorporate materials that are significantly  

E-Print Network [OSTI]

(CFCC) of ISmm (0.6 in.) in diameter, produced by Tokyo Rope Mfg. Co., Ltd. ofJapan, were used to preten reinforced for shear using 15.2 mm diameter CFCC stirrups and lOx 5 mm (0.4 x 0.2 in.) Leadline bars

265

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

E-Print Network [OSTI]

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...

Slade, David

2010-03-29T23:59:59.000Z

266

Neurobiology of Disease Neuroinflammation Alters the Hippocampal Pattern of  

E-Print Network [OSTI]

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

Wenk, Gary

267

I.T. Chapman, A. Kirk, S. Saarelma, J.R. Harrison, R. Scannell and the MAST Team  

E-Print Network [OSTI]

/CCFE Fusion Association, Culham Science Centre, Abingdon, OX14 3DB, UK Copy of Paper submitted to Nuclear are outlined. The stability of the edge of MAST H-mode plasmas has been tested when lobe structures are present components [4]. In order to avoid damage to the vessel components in future tokamaks like ITER, a robust ELM

268

A410 Journal of The Electrochemical Society, 161 (3) A410-A415 (2014) 0013-4651/2014/161(3)/A410/6/$31.00 The Electrochemical Society  

E-Print Network [OSTI]

an asymmetric cell with an electric double-layer capacitor (EDLC) electrode and a red-ox battery electrode-infinite. Therefore, the full-cell specific capacitance (Ctot) of a hybrid capac- itor is dominated by the EDLC electrode. Usually EDLC electrodes are based on high surface area activated carbons (AC) and there- fore

Ceder, Gerbrand

2014-01-01T23:59:59.000Z

269

Determination of the Mechanism of Electrocatalytic Water Oxidation by a Dimanganese Tetrakis-Schiff Base Complex: Comparison of  

E-Print Network [OSTI]

scientists are now looking to plants to obtain model systems for the conversion of renewable solar energy There is an imperative need in the 21st century to develop fuels which are renewable, carbon-free, and clean. ManyOx cluster subject to much ongoing research.2,3 The study of transition metal complexes featuring

Dinolfo, Peter H.

270

[forthcoming in the second edition of Spinello R. and Tavani H. (eds.), Readings in Cyberethics (Boston: Jones and Bartlett)  

E-Print Network [OSTI]

, Faculty of Philosophy, Department of Computer Science, and Programme in Comparative Media Law and Policy, Oxford University. Address for correspondence: Wolfson College, Oxford, OX2 6UD, UK, luciano.floridi@philosophy codes of conduct, technical standards, usage regulations, and new legislation. The constant risk

Floridi, Luciano

271

Putah Creek Terrestrial Wildlife Monitoring Program  

E-Print Network [OSTI]

;#12;#12;#12;#12;#12;#12;#12;#12;#12;MAP EXHIBITS C1-36 Avian Focal Species Distribution Maps Putah Creek and Yolo-Sutter Bypass Sites, OX=Oxbow, DC=Dry Creek Confluence, WN=Winters Putah Creek Park, YH=Yolo Housing, LB=Center for Land

Todd, Brian

272

1529-6466/00/0052-0001$05.00 Introduction to U-series Geochemistry  

E-Print Network [OSTI]

Parks Road Oxford, OX1 3PR, United Kingdom 4 Department of Geology University of Illinois at Urbana of plate tectonic theory. These leaps in knowledge moved geology from its largely descriptive origins, with widespread application in disciplines as diverse as modern oceanography and igneous petrology. The uranium

Henderson, Gideon

273

algal cell cultures: Topics by E-print Network  

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

..... . 5.1.5 Preparing 4 liters of IX medium 5.2 lOX Stocks: Preparation checklist. 5.3 Media... Summers, Max D.; Smith, Gale E. 1987-01-01 First Page Previous Page 1 2 3 4 5 6 7...

274

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

E-Print Network [OSTI]

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

Iglesia, Enrique

275

Oil and Gas CDT Coupled flow of water and gas  

E-Print Network [OSTI]

Oil and Gas CDT Coupled flow of water and gas during hydraulic fracture in shale The University of Oxford http://www.earth.ox.ac.uk/people/profiles/academic/joec Key Words Shale gas, hydraulic fracture, groundwater contamination, transport in porous media Overview Recovery of natural gas from mudstone (shale

Henderson, Gideon

276

Information media used by cotton farmers in producing cotton in a ten-county area of North Central Texas  

E-Print Network [OSTI]

~~/%M~(~ ~ . , gP'Z'1$'+19'f. . W~jF ' ' ~Q. , "f Q9&'1+~ , gp @P '~ 8p ~~AC/. 9g"55!, QP y'4~3'6~ @1+ $4~ Q4~ f~'. t$, QM~gg8Z Z$;, '3'TOKgQg ppj7 8&, ", ~ Otp gC Q2~ Slp89p&Q, ~Q C$ pRH@p%Q~~ 1 ': ' I I l '$ '~CP1&p 4' . ~", I t 'C Fi... ' . 4~$AJ"1~9"~3'i7~ . . KK W:~1ivjg' ~ ~gg:yg grq-'gg~g gg +'~ ~~ y? ~g gg~' ~0@ @gal g~ QlfCL@CQ @AQ, ~'ALVJQ9 ~, QQS g1'~gi~i+1 5$ a J+S $+QgfQq ~~7$+Vl:g ( 'Vx'pi~i~('f8 &M~ ~':~'g8CM 4O ~M~ ~ 4i 3s K~-;JAy A"w&i?8POV 88%. p R &~lC 4'W~ Wo RQL...

Anwarul Karim, A. M

2012-06-07T23:59:59.000Z

277

Final Technical Report  

SciTech Connect (OSTI)

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.

Logan, Jesse, L; Witmer, Dennis, PhD

2012-07-29T23:59:59.000Z

278

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

E-Print Network [OSTI]

, we get Oh ( Xt)'-' h(x, t -T- At)-- h(x, t)-T- Ate- -T- 2 Ot-+ Ho , (3) where Hot denotes higher-order terms. Differentiating (2) with respect to t, we get 021, 0 ( h,,_, Oh ) Oo (x) , Oh a(x)nh\\"-' Oh + Oq(x, t) + - - _-- c-)- at (4) ot... Ox nh\\" Ot + oq,:x, t) l;1 at + - - c ot_] (5) Writing (5) in a compact form, we get I 0 h\\" h, Oa(x) h(x, t + Zt) -- h(x, t) + -- (x) Ox + q( , t) + (Z'Z r)J xt + ( xt)'-' h\\"-' [ 0 ( ) , (x) l} ? 0 (//- i )j + {Oq(x' t)-- a(x) 0...

Singh, Vijay P.

279

A nucleotide-level coarse-grained model of RNA  

E-Print Network [OSTI]

We present a new, nucleotide-level model for RNA, oxRNA, based on the coarse-graining methodology recently developed for the oxDNA model of DNA. The model is designed to reproduce structural, mechanical and thermodynamic properties of RNA, and the coarse-graining level aims to retain the relevant physics for RNA hybridization and the structure of single- and double-stranded RNA. In order to explore its strengths and weaknesses, we test the model in a range of nanotechnological and biological settings. Applications explored include the folding thermodynamics of a pseudoknot, the formation of a kissing loop complex, the structure of a hexagonal RNA nanoring, and the unzipping of a hairpin motif. We argue that the model can be used for efficient simulations of the structure of systems with thousands of base pairs, and for the assembly of systems of up to hundreds of base pairs. The source code implementing the model is released for public use.

ulc, Petr; Ouldridge, Thomas E; Doye, Jonathan P K; Louis, Ard A

2014-01-01T23:59:59.000Z

280

A nucleotide-level coarse-grained model of RNA  

E-Print Network [OSTI]

We present a new, nucleotide-level model for RNA, oxRNA, based on the coarse-graining methodology recently developed for the oxDNA model of DNA. The model is designed to reproduce structural, mechanical and thermodynamic properties of RNA, and the coarse-graining level aims to retain the relevant physics for RNA hybridization and the structure of single- and double-stranded RNA. In order to explore its strengths and weaknesses, we test the model in a range of nanotechnological and biological settings. Applications explored include the folding thermodynamics of a pseudoknot, the formation of a kissing loop complex, the structure of a hexagonal RNA nanoring, and the unzipping of a hairpin motif. We argue that the model can be used for efficient simulations of the structure of systems with thousands of base pairs, and for the assembly of systems of up to hundreds of base pairs. The source code implementing the model is released for public use.

Petr ulc; Flavio Romano; Thomas E. Ouldridge; Jonathan P. K. Doye; Ard A. Louis

2014-03-17T23:59:59.000Z

Note: This page contains sample records for the topic "ox yg enates" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

Plasma Surface Modification of Polymer Backsheets: Origins of Future Interfacial Barrier/Backsheet Failure  

SciTech Connect (OSTI)

Flexible polymer substrates coated with inorganic oxide moisture barriers are a potential replacement for glass backsheets in thin film PV modules. Silicon oxynitride (SiOxNy) deposited by PECVD on polyethylene terephthalate (PET) represents one potential new backsheet candidate. Barrier deposition runs at NREL have typically included a nitrogen-rich plasma pretreatment prior to actual barrier deposition with the intention of cleaning the PET surface as well as enhancing adhesion of the SiOxNy barrier film to PET; however, test coupons of PET/barrier/EVA/TPE failed after damp heat exposure. PET substrates exposed to plasma conditions similar to those used in pre-treatment were examined by X-ray photoelectron spectroscopy (XPS) to reveal new low molecular weight PET fragments are created which are volatile upon heating and water soluble. Failure analysis of the coupons determined that the moisture barrier is, in fact, transferred to the encapsulant side.

Pankow, J. W.; Glick, S. H.

2005-11-01T23:59:59.000Z

282

Geology of the Loyal Valley-West area, Mason County, Texas  

E-Print Network [OSTI]

Sandstone Member. Gap Mountain Limestone Member Lion Mountain Limestone Member . 31 A'ilberns Formation . 32 Welge Sandstone Mexnber. Morgan Creek Limestone Member . Point Peak Shale Member 33 36 San Saba Limestone Member . Ox dovician Systexn... Saadstone Member. 25 Weathered Surface of the Cap Mountain Limestone Member . VII. Sandstone Bed in the Cap Mountain Limestone Member 30 Contact Be~eon the Lion Mountain and Welge Members . IX. Weathered Morgan Creek Limestoae Member 38 Bioherms...

Kmiecik, Jerome Gregory

2012-06-07T23:59:59.000Z

283

SCRS/2004/062 Col. Vol. Sci. Pap. ICCAT, 57(2): 142-161 (2005) BIGEYE TUNA (THUNNUS OBESUS) BEHAVIOR  

E-Print Network [OSTI]

, and oxygen concentrations less than 1.5 ml O2 l-1 . In contrast, skipjack tuna (Katsuwonus pelamis'oxygène inférieures à 1,5 ml O2 l-1 . En revanche, le listao (Katsuwonus pelamis) et l'albacore (T. albacares oxígeno inferiores a 1,5 ml O2 l-1 . Por el contrario, el listado (Katsuwonus pelamis) y el rabil (T

Hawai'i at Manoa, University of

284

Regmi Research Series ,Year 10, December 1, 1978  

E-Print Network [OSTI]

::.t::.tel." to Us lof wyon~ trCi\\ts y a Si.lgh _: or lgh _: or <3rbltrarily . El1g~go.! in trc:Q.e and other aftQjr~U f~.jU .' :'c-~r own f r ____ .s ...,111 1 l~1 u~nd r,?;ports to Us abo~t "" "w ... ~'I c ii:uatlon . p r :Nailing th :~ro ." ~hL 7 t! . ox: Eaisakh...

Regmi, Mahesh C

1978-01-01T23:59:59.000Z

285

NA"IVE NONCOMMUTATIVE BLOWUPS AT ZERO-DIMENSIONAL SCHEMES: AN APPENDIX.  

E-Print Network [OSTI]

(X, I Lm ) OX ! I Lm ! 0, for some sheaf Km . The proof of [KRS , Proposition 4.12(2)] can (In Lmn)oe-! H0(X, I Lm ) (In Lmn)oe! I Lm (In* * Lmn)oe! 0. Since (In Lmn.5)shows that the induced map H0(X, I Lm ) H0(X, (In Lmn)oe) -! H0(X, I Lm (In

Rogalski, Daniel

286

The effect of selection on ventral feather tract and inferior space width in broiler type chickens  

E-Print Network [OSTI]

used in the selection index were chosen by characterizing and correlating the feathered and nonfeathered regions of the breast with other phenotypic characteristics of economic im- portance and then reducing the number of traits to those most highly... of sez, 'bx'eed ox conformation. An early covering of feathers over the keel bone appeared to serve as protec- tion, thereby reducing the incidence of breast blisters. Tunk and Savage (1956) reported similar results when they plucked feathers from...

Kiker, John Thomas

1970-01-01T23:59:59.000Z

287

Bodleian Libraries'Admissions Office Personal Details  

E-Print Network [OSTI]

and held securely in the University's shared Development and Alumni Relations System (DARS): DARS provides.alumni.ox.ac.uk/data_protection for information on the way in which your personal data are held and used in DARS. Some sensitive personal data may be held in DARS. If, at any time, you have any queries about the use of your personal data in DARS or wish

Oxford, University of

288

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

E-Print Network [OSTI]

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.... LABORATORY DISTRIBUTION COEFFICIENT INVESTIGATION . . Methods. Preliminary Evaluation Mechanism of Selenium Attenuation. Freundlich Isotherm. . Control Batch Tests Distribution Coefficient Dependence on Soil Type. . . . . Distribution Coefficient...

Green, Deborah Joan

1984-01-01T23:59:59.000Z

289

Science and Parliament Research Council secondments -an  

E-Print Network [OSTI]

Mather University of Oxford tamsinm@earth.ox.ac.uk #12;Talk outline · What parliament does · Science 6 4 1 4 Education, Science &Art 1 1 1 0 0 0 1 0 No Energy 5 7 7 5 No No No No No Environment 7 5 8 2 8 6 6 Northern Ireland Audit Office No No No No 24 16 10 12 5 European Documents No No No No 27 14

Mather, Tamsin A.

290

The effect of gaseous environments on selected microbiological and chemical attributes of broiler carcasses  

E-Print Network [OSTI]

by flushing the package container every twenty-four hours with the con- centration of carbon dioxide desired. Surface counts remained at relatively low levels throughout the storage period. A treatment of only initial flushing was superior to both... intermittent OX (air) and intermittent 60/ carbon dioxide with respect to microbiological growth. Moisture content of broiler carcasses was not affected by storage iv in the carbon dioxide environments. No differences in moisture con- tent were evident...

Hatley, Sandra Eugenia

1981-01-01T23:59:59.000Z

291

FRP FOR LARGE SPAN HIGHWAY BRIDGE IN CANADA Emile Shehata, Amr Abdelrahman, Gamil Tadros, and Sami Rizkalla  

E-Print Network [OSTI]

as shown in Fig. 1. 33.05 m 2.1 Materials FRP (Leadline) 33.0 Plan FRP (CFCC) 33.0 ~FRP 8 girders @ 1.8 m. Carbon fibre composite cables (CFCC) ofl5.2 mm diameter, produced by Tokyo Rope, Japan, were used for shear using 15.2 mm diameter CFCC stirrups and lOx 5 mm Leadline bars of rectangular cross section

292

A study of the reaction between mercury (II) iodide and organic amine hydroiodides  

E-Print Network [OSTI]

Value of E bis(dimethylammonium) tetreiodomercurate(XI)" 216 , 257 4. 5xl0 1. 6x10 0, 9xlO 4, 5x10 1. 8x10 l, lx10 2 ilxlO 1, 5xlO 4 e5xl0 . 1+8x10 . l. lxlO . bis(2-picolinium) tetraiodomercurate(XX) 216 - 261 505 5. 4x$0 2. 5x10 X. lxlO 2... 10 0~9xlO . . le6x10, loOx10 1. 8x10, 1o2xlO 5. 0x10, 1 i 6x10 1. 0x10 E216 E257, E50 j 5 ?2r10 1 i6xlO 1 iOx10 4e9x10 1 a7x10 1 eOx10 J4 1. 8x10 1. 2ilO 5 ilx10 1. 7x10 1 ilx10 ' Concentration . moles/liter lx10 ' 2xlO 4xIO Average Value...

Stevenson, John Harvey

1959-01-01T23:59:59.000Z

293

Omega-3 fatty acid oxidation products prevent vascular endothelial cell activation by coplanar polychlorinated biphenyls  

SciTech Connect (OSTI)

Coplanar polychlorinated biphenyls (PCBs) may facilitate development of atherosclerosis by stimulating pro-inflammatory pathways in the vascular endothelium. Nutrition, including fish oil-derived long-chain omega-3 fatty acids, such as docosahexaenoic acid (DHA, 22:6{omega}-3), can reduce inflammation and thus the risk of atherosclerosis. We tested the hypothesis that cyclopentenone metabolites produced by oxidation of DHA can protect against PCB-induced endothelial cell dysfunction. Oxidized DHA (oxDHA) was prepared by incubation of the fatty acid with the free radical generator 2,2-azo-bis(2-amidinopropane) dihydrochloride (AAPH). Cellular pretreatment with oxDHA prevented production of superoxide induced by PCB77, and subsequent activation of nuclear factor-{kappa}B (NF-{kappa}B). A{sub 4}/J{sub 4}-neuroprostanes (NPs) were identified and quantitated using HPLC ESI tandem mass spectrometry. Levels of these NPs were markedly increased after DHA oxidation with AAPH. The protective actions of oxDHA were reversed by treatment with sodium borohydride (NaBH{sub 4}), which concurrently abrogated A{sub 4}/J{sub 4}-NP formation. Up-regulation of monocyte chemoattractant protein-1 (MCP-1) by PCB77 was markedly reduced by oxDHA, but not by un-oxidized DHA. These protective effects were proportional to the abundance of A{sub 4}/J{sub 4} NPs in the oxidized DHA sample. Treatment of cells with oxidized eicosapentaenoic acid (EPA, 20:5{omega}-3) also reduced MCP-1 expression, but less than oxDHA. Treatment with DHA-derived cyclopentenones also increased DNA binding of NF-E2-related factor-2 (Nrf2) and downstream expression of NAD(P)H:quinone oxidoreductase (NQO1), similarly to the Nrf-2 activator sulforaphane. Furthermore, sulforaphane prevented PCB77-induced MCP-1 expression, suggesting that activation of Nrf-2 mediates the observed protection against PCB77 toxicity. Our data implicate A{sub 4}/J{sub 4}-NPs as mediators of omega-3 fatty acid-mediated protection against the endothelial toxicity of coplanar PCBs.

Majkova, Zuzana [Graduate Center for Toxicology, University of Kentucky, Lexington, KY 40536-0200 (United States); Layne, Joseph [Graduate Center for Nutritional Sciences, University of Kentucky, Lexington, KY 40536-0200 (United States); Sunkara, Manjula; Morris, Andrew J. [Division of Cardiovascular Medicine, The Gill Heart Institute, University of Kentucky, Lexington, KY 40536-0509 (United States); Toborek, Michal [Department of Neurosurgery, University of Kentucky, Lexington, KY 40536-0200 (United States); Hennig, Bernhard, E-mail: bhennig@email.uky.edu [Graduate Center for Toxicology, University of Kentucky, Lexington, KY 40536-0200 (United States); Graduate Center for Nutritional Sciences, University of Kentucky, Lexington, KY 40536-0200 (United States); Department of Animal and Food Sciences, University of Kentucky, Lexington, KY 40536-0200 (United States)

2011-02-15T23:59:59.000Z

294

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

SciTech Connect (OSTI)

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

Manna, Kuntal [Ames Laboratory

2012-12-17T23:59:59.000Z

295

The current factors in the selection of potential business executives from colleges  

E-Print Network [OSTI]

business executives from colleges? 2. What criteria are used to determine which college graduates possess these desirable factors? g. Who has the final responsibility for the selection of these potential business executives? Analysis of the material... Association dealing with the combined order of importance Paul Hencke, "Whet Makes An Executives", ~ti g~- ~ne, June, 1955, p. E4. 9 Joseph L. Krieger, P n le d obl f ec t. ve 7S egd~r h~i ~ Universal Printers, ox , ngton, rg a, 13 of both...

Wortham, Clarence Randolph, Jr

1962-01-01T23:59:59.000Z

296

Analysis of radio tracking data obtained by triangulation with special reference to ecology of collared peccary herds in South Texas, U.S.A.  

E-Print Network [OSTI]

within 30 minutes of each other were considered simultaneous. In effect, the assumptions being established are that locations within 30 minutes of each other are dependent while successive locations on an individual which are taken every 60 to 90... if the sampling interval was greater than 90 minutes. Collared peccaries travelled in herds and had a well-defined home range. Herds spent more time ()902) in dense chaparral habitat than in open mesquite habitat ((lOX). Herds had areas of intensive use which...

Ettestad, Paul Jonas

1984-01-01T23:59:59.000Z

297

Fractionation studies on the unidentified growth factor(s) in distillers dried solubles  

E-Print Network [OSTI]

. This was called "methyl aloohol soluble fraction of distillers dried solublesi The residue wss air drie4 and labeled "aetna 1 alcohol insoluble fraotion of distillers drie4 solubles". $. r fo m at nt ist e i o ubl s Five hundred gm of distillexs dried... fraction ox Ms- tillers Cried solubles (pH 1)"L "water soluole fr~ction of distillers dried solubles (PH '/)"L ~ "water soluble fxaction of dis~illers dried solubles (pH 11)". ur h r Pra tionatio f th Sate 8 lub e }raut of 9 still rs ed Soluo es a...

Dannenburg, Warren Nathaniel

1955-01-01T23:59:59.000Z

298

Hermeneutique des Tantra : les Six extremes (ou possibilites alternatives) (satkoti ; mtha' drug). A propos d'un exemple de pregnance des modeles exegetiques des sutra  

E-Print Network [OSTI]

prati- que des Anuttarayogatantra, ainsi que dassurer, linstar du sens cach une conti- nuit ncessaire du point de vue psychologique, didactique et sotriologique, entre stra et tantra (V. P. Arnes, Un exemple dapplication un tantra, du... on the oral transmission, Oxford, Ox- ford Univ. Press, 1963, p.48), chez les bKa brgyud pa et les rNying ma pa, on dis- tingue entre gnas lugs quil traduit par being in itself et yin lugs quil traduit par being this or that, ces deux aspects tant la...

Arenes, Pierre

2002-01-01T23:59:59.000Z

299

Revue dEtudes Tibtaines  

E-Print Network [OSTI]

prati- que des Anuttarayogatantra, ainsi que dassurer, linstar du sens cach une conti- nuit ncessaire du point de vue psychologique, didactique et sotriologique, entre stra et tantra (V. P. Arnes, Un exemple dapplication un tantra, du... on the oral transmission, Oxford, Ox- ford Univ. Press, 1963, p.48), chez les bKa brgyud pa et les rNying ma pa, on dis- tingue entre gnas lugs quil traduit par being in itself et yin lugs quil traduit par being this or that, ces deux aspects tant la...

Achard, Jean-Luc

2002-01-01T23:59:59.000Z

300

Phase control in the synthesis of yttrium oxide nano and micro-particles by flame spray pyrolysis  

E-Print Network [OSTI]

and Regulation The experiment uses hydrogen as the fuel gas and pure oxygen as a co-flow. Hydrogen (part no. HY 4.5, product grade-4.5 with 99.995% purity, supplier: Praxair) and Oxygen (part no. OX 2.6, product grade-2.6 with 99.6% purity, H 2 OPraxair) used are of industrial grade purity. Nitrogen (part no. NI 4.8, product grade-4.8 with 99.998% purity, supplier: Praxair) was used in the process to purge the supply lines with an inert gas to eliminate the potential hazard...

Mukundan, Mallika

2009-05-15T23:59:59.000Z

Note: This page contains sample records for the topic "ox yg enates" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

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

E-Print Network [OSTI]

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...

Suffel, Paul H

1952-01-01T23:59:59.000Z

302

Synergistic effects of 2-aminoethylisothiuronoium.Br.HBr (AET) and dimethyl sulfoxide (DMSO) in chemical radioprotection of mice  

E-Print Network [OSTI]

to irradi- ation& could confer a 7OX protection against a lethal dose of x-rays. It has been shown by Vos and Kaalen (18) and by Bridges (19) that DMSO can protect tissue culture cells and bacteria against the lethal effects of ionizing radiation. Gollan... addition of glutathione. Following the above work of Barron, Patt ef af. (7) found that the lethal effect of x-rays could be lessened by prior treatment with cysteine. This work stimu- lated a search for more potent chemicals which possessed the ability...

Frei, Melvin Ray

1968-01-01T23:59:59.000Z

303

SUPPORTING INFORMATION Growth of Manganese Oxide Nanostructures Alters the Layout of  

E-Print Network [OSTI]

0 0 0.8 1.5 2.6 log fadh(MnOx) (pN) 2.22 2.15 2.41 2.84 2.67 2.46 2.44 Source Degrees of Freedom Sum and McCabe, W. H. Freeman and Company, New York, 1998. R2 = 3052/3184 = 0.96 and adjusted R2 = 0. Freeman and Company, New York, 1998 * Large probabilities indicate that there is no linear relation

304

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

E-Print Network [OSTI]

of Parma viale G. P. Usberti 7/A , Parma 43124 , Italy Dr. F. Maccherozzi, Prof. S. S. Dhesi Diamond Light Source Chilton, Didcot , Oxfordshire OX11 0DE , UK Dr. N.-J. Steinke, Dr. R. Mansell, Prof. C. H. W. Barnes Cavendish Laboratory... , minimizing stray-fi eld energy. The IP component of magnetization lies perpendicular to this IP direction, along the same direction in adjacent stripes. In polycrystalline fi lms of negative-magnetostriction Ni, which show stripe domains above a critical...

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

2015-01-12T23:59:59.000Z

305

Ultra high vacuum broad band high power microwave window  

DOE Patents [OSTI]

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.

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

1997-01-01T23:59:59.000Z

306

Ultra high vacuum broad band high power microwave window  

DOE Patents [OSTI]

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.

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

1997-11-04T23:59:59.000Z

307

Model of calcareous deposit formation on cathodically protected steel in seawater: improvements and extensions  

E-Print Network [OSTI]

( ? ) g dm3 mol . dme conuersion factor ( ) g. cms (20) 16 Concentration of Major iona in Seawater of Various Salinitles . 1. 6 20- CII ' 15 oO j. :zto f o L o 0 . 0--- X -??)???&X e3-- X X X ? X- 10 20 30 40 Salinity('lg O s. 'o . 12 ~g... e of + 0 0. 6 o~ ox MCI ? tt ? Nt+ /~a- / ? + ? h/g+ ) ? o ? Ca2+ f ? x ? HXB. Fi8trre 6: Concentration of Major Iona in Seawater of Various Salinities and) At ? ? 49. 641 Ag = 67. 460 As ? 21. 028 Bt = ? 0. 077314 B2 = 0. 046580 Bs...

Blackburne, Patricia Nicole

2012-06-07T23:59:59.000Z

308

Moving mesh partial differential equations (MMPDEs) based upon the equidistribution principle  

E-Print Network [OSTI]

, ft Ot of fixed, Of Of Of Ox dt Ot fixed= Oz tfixed Ot fixed + fixed for an arbitrary function f f(z, t) f(z(, t), t). Suppose that a uniform mesh is given on the computational domain by (3) i -, 0, 1,...,n, where n is a certain positive integer...) satisfies the QSEP is completely determined from the initial mesh by this relationship. 3.2. (MMPDE2). The analysis for (MMPDE2) is similar to that of (MMPDE1). From a linear stability analysis, we have (49) 5x(, t) e-5 M(x(, 0), 0) 6x(, 0).M(x(,t),t) D ow...

Huang, Weizhang; Ren, Yuhe; Russell, Robert D.

1994-06-01T23:59:59.000Z

309

Final Report on CRADA ORNL05-0703  

SciTech Connect (OSTI)

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.

Christen, D.K.

2010-04-27T23:59:59.000Z

310

Coarse-graining DNA for simulations of DNA nanotechnology  

E-Print Network [OSTI]

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.

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

2013-01-01T23:59:59.000Z

311

Relationships between radar precipitation-echo patterns associated with midwestern tornadoes and their corresponding synoptic meteorological situations  

E-Print Network [OSTI]

~ 1 ~ 01 t ~ ~ 1 R3 11 ~ Stoee of 17 lee 1959001 ~ ~ ~ ~ 01 ~ ~ ~ ~ ~ ~ ~ ~ ~ 120 Stme of 1$ RewAer 195$0 ~ ~ ~ ~ 0 ~ ~ ~ ~ ~ ~ 1 ~ 13 ' Std@ Of 29 Std 19960 ~ ~ 1st ~ ~ ~ ~ ~ ~ ~ 1 ~ ~ ~ ~ ~ 140 84sox4 ooINe@log ~ Xse80... Rohoee ~4 in e Roxe ox Lace Coheeive 14neo ~ ~ ~ ~ ~ o ~ o ~ ~ ~ 1, Stoxaa of 2~3 Ayxil 1956? ~ ~ ~ ~ ~ ~ o ~ o ~ ~ ~ ~ ~ ~ Lo ~ ~ ~ ~ ~ o ~ ~ ~ ~ ~ ~ o ~ ~ ~ ~ ~ ~ o ~ ~ ~ ~ ~ ao ~ ~ TYPO 1I? Ti4eeRxee4 Sheet Rohosea ~ ~ ~ ~ oa ~ ~ ~ 1 ~ Stoxn of 17...

Packnett, Don Stevenson

1959-01-01T23:59:59.000Z

312

Polarisation independent phase modulation using a blue phase liquid crystal over silicon device  

E-Print Network [OSTI]

, Department of Engineering, University of Cambridge, 9 JJ Thomson Avenue, Cambridge, CB3 0FA, UK 2Department of Engineering Science University of Oxford, Parks Road, Oxford, OX1 3PJ, UK *Corresponding author: rmh61@cam.ac.uk Liquid crystal over silicon... together using 6 ?m spacer bead doped glue. The cell thickness was then measured using the Fabry-Perot interference technique with a spectrometer connected to the microscope (Ocean Optics USB 2000). The cell gap thickness was measured to be 6.4 0.1 ?m...

Hyman, Rachel M.; Lorenz, Alexander; Morris, Stephen M.; Wilkinson, Timothy D.

2014-10-10T23:59:59.000Z

313

Implementation of a microprocessor-based overcurrent relay / by Ernie Ward McWilliams  

E-Print Network [OSTI]

. Since th1s type of trans1ent is of short duration and a high frequency, it was decided to use a combination of a metal oxide var1stor and a passive low pass f1lter to provide the surge protect1on. A metal ox1de varistor (MOV) is a nonlinear... that the most effective method to reduce the effects of high frequency tran- sients 1s a combinat1on of enclosing the relay as much as is real1stically possible in a metallic shield, placing low pass f1lters at all signal 1n- puts to the relay, and designing...

McWilliams, Ernie Ward

1979-01-01T23:59:59.000Z

314

Analysis of insertion mutants in the Escherichia coli fertility factor F transfer genes: traY, traQ, trbA, trbB and artA  

E-Print Network [OSTI]

and donor strains carrying both a tra::kan insertion construct and either Flee or pOX38 43 6 Qualitative mating and bacteriophage sensitivity S R + R tests of Tc Km Lac Nal XK1200 transconjugants deri~ed from Flac/pKI238 donors 45 7 Qualitative mating... and bacteriophage sensitivity S R + R tests of Tc Km Lac Nal XK1200 transconjugants derived from Flac/pKI239 donors 47 8 Southern hybridization pattern of Flac and Fl N323 8-5 DNA p t*d ' 8 pK118 1 NNA 9 Quantitative mating and complementation tests Fl t tt238...

Kathir, Pushpa Rani

1989-01-01T23:59:59.000Z

315

Molecular composition of biogenic secondary organic aerosols using ultrahigh resolution mass spectrometry: comparing laboratory and field studies  

E-Print Network [OSTI]

of fluorineethene propene (FEP) Teflon foil with a volume of 3.91 m3. It was operated at 296 2 K using purified air at 0.11 mbar above atmospheric pressure. The experiments were performed at 6068 % relative humidity produced from bubbling puri- fied air... can possibly be used for parameterisation of OA at the boreal site. O / C ratios may not accurately describe the degree of ox- idation of organics, because other non-oxidative processes (e.g. hydration and dehydration) can also affect these pa...

Kourtchev, I.; Fuller, S. J.; Giorio, C.; Healy, R. M.; Wilson, E.; O'Connor, I.; Wenger, J. C.; McLeod, M.; Aalto, J.; Ruuskanen, T. M.; Maenhaut, W.; Jones, R.; Venables, D. S.; Sodeau, J. R.; Kulmala, M.; Kalberer, M.

2014-01-01T23:59:59.000Z

316

Molecular composition of biogenic secondary organic aerosols using ultrahigh-resolution mass spectrometry: comparing laboratory and field studies  

E-Print Network [OSTI]

of fluorineethene propene (FEP) Teflon foil with a volume of 3.91 m3. It was operated at 296 2 K using purified air at 0.11 mbar above atmospheric pressure. The experiments were performed at 6068 % relative humidity produced from bubbling puri- fied air... can possibly be used for parameterisation of OA at the boreal site. O / C ratios may not accurately describe the degree of ox- idation of organics, because other non-oxidative processes (e.g. hydration and dehydration) can also affect these pa...

Kourtchev, I.; Fuller, S. J.; Giorio, C.; Healy, R. M.; Wilson, E.; O'Connor, I.; Wenger, J. C.; McLeod, M.; Aalto, J.; Ruuskanen, T. M.; Maenhaut, W.; Jones, R.; Venables, D. S.; Sodeau, J. R.; Kulmala, M.; Kalberer, M.

2013-11-12T23:59:59.000Z

317

Molecular comparisons of Babesia odocoilei using the internal transcribed spacers of ribosomal RNA  

E-Print Network [OSTI]

.1. Continued. Isolate Name Host Geographic area Clinical Signs Description/References ITS Genbank Numbers SSU GenBank Numbers WTD MA White-tailed deer Massachusetts Normal Obtained from blood of free-ranging white-tailed deer NY Rein 1 Reindeer... New York Fatal, acute babesiosis Obtained from reindeer blood; first report of B. odocoilei in state of NY AY661504 NY Rein 2 Reindeer New York Fatal, acute babesiosis Obtained from reindeer blood AY661505 MN MO1 Musk Ox Apple Valley, Minnesota...

Schoelkopf, Lorien

2005-11-01T23:59:59.000Z

318

Spatial and temporal variability of plankton stocks from acoustic backscatter intensity and direct measurements in the northeastern Gulf of Mexico  

E-Print Network [OSTI]

OF FIGIJRES I'IGURE Page 1 Map of the DeSoto Canyon area of the Gulf of Mexii:o including locations of twelve moored ADCPs. . . . . . . . . . . . . . . . . . . . . . . . , . ?. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2 Cruise... series of SeaWiFS chlorophyll data at four ADCP mooring locations west of 87. 5' W . 59 23 Time series ot SeaWiFS chlorophyll data at four ADCP mooring locations east of 87. 5' W . . . 60 24 13ox and whisker plot showing the tv o-year average surface...

Scott, Rebecca Lee

2001-01-01T23:59:59.000Z

319

Guest Author-Professor Shigeyoshi Nagataki  

E-Print Network [OSTI]

CFCC In Japan n.. IonoeSi preSlrISSiod concrete bndge "S"lSI Carbon fiber CompoSite C,ble (CfCCl1dons used wer. CFCC. and !hi gird.....Cl1011 wal accomphshed by till Clmile'o'\\!f "8C\\lOn methodIt IYfNI 01 ubi,s. $Ox CFCC stnonds. wrtIt diarne\\1lr$ 04 12.5 nvn e&eh. we" ~ped fIIO one ndi-cal*. 80Ih

320

Elias Allen and the role of instruments in shaping the mathematical culture of seventeenth-century England  

E-Print Network [OSTI]

ht ~d . IS th nt Elias Allen and the Role of Instruments in Shaping the Mathematical Culture of Seventeentli-Century England ( RESTER KA THARINE HIGTON CLARE COLLEGE Dissertation submitted for the degree of Doctor of Philosophy Hester... -269, and Mark H. Curtis, OxJord alld Cambridge ill Trallsitio1l1558-1642 (Oxford, 1959), pp.227-260. I" J' I 18 The 'academic mathematicians' Let us begin with the ' academic mathematicians'. This is the group which has been accorded the most time...

Higton, Hester Katharine

1996-05-07T23:59:59.000Z

Note: This page contains sample records for the topic "ox yg enates" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

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

E-Print Network [OSTI]

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...

Bridges, Gary Wayne

1977-01-01T23:59:59.000Z

322

Reduction of the effect of preferred orientation in x-ray crystal powder samples  

E-Print Network [OSTI]

'kS ~ f}. FIGURE 3. BRAGG SCATTERING Yf Chs crystallites ars randomly oriented throughout the powdsx, the pattern zepresents a superposition of the individual patterns which would be obtained if a single crystal were irradiated in every possible... mesh screen, preferred orientation ean be x educed. 3 Particles small enough Co pass thxough Chs screen will of'ten have relatively unif'orm dimensions, but this method does not always eliminate preferred ox ientation, McCx eery9 and Hildsbz and7...

Nydegger, Raymond Russell

2012-06-07T23:59:59.000Z

323

Oxidative metabolism of glucose-6-phosphate by enzyme systems of bovine erythrocytes  

E-Print Network [OSTI]

of zed cells from normal human subjects, 80 per cent of Chs ox'iginal ensyme activity remained after 3 hours of incubation at 38 C. o In red cell lysates from certain mutant sub)acts, none of the enzyme activity was detectable after 3 hours..., therefore, to determine mors extensively cba stromal effecC on the oxidative activity of the re4 ceil lysstes with varying levels of tha NADP. Cell stroma were removed by centrifugation, and chs oxidative accivity of syscams containing the serena...

Brown, Harold Edward

2012-06-07T23:59:59.000Z

324

TREKisM Issue 31  

E-Print Network [OSTI]

OX) Canada Dr. Joan E. 8auman 4636 Candleglow br., St. Louis, MO 63129 Timmie Beuachamp P 0 80x 153, Dorfield Beach, FL 33441 Judith L. Bessai 1806 W. William Apt 3, Champaign, IL 61821 Joan Blummetti-Santapaga 168 Memphis Ave, Staten Is, NY..., M1W 1Z7 Patt Demetri 24600 Joy Rd, #2, Redford, MI 48239 .Madeleine Dessureault 6B4 Albert, Ottawa, ONT, K1R 6L3 Canada .Adrienne M. L. Deutsch 7000 Blvd. East #128C, Guttenburg NJ 07093 .Valerie DeVries 907 Fulton Ave, Winthrop Harbor, IL 60096...

1983-01-01T23:59:59.000Z

325

Visualizing Music  

E-Print Network [OSTI]

. Craig Hammack demonstrated super human levels of pat ience throughout this process and he lped me retain my focus. I would also like to thank my comrades in the Visualization Laboratory, they have expanded my horizons a n d given a g o o d ba lance... the unrounded, warm. Consonants were realized by their manner of articulation and if they were vo iced. For example, the frictive f is cerulean blue and frictive y is violet. The breaks or breaths in the text FIGURE 1: Ox; URSONATE, 2nd Half of the Fourth...

Haggerty, Mary Beth

1995-01-01T23:59:59.000Z

326

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)

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.

Ferrandon, M.; Kropf, A. J.; Krause, T.; Chemical Sciences and Engineering Division

2010-05-15T23:59:59.000Z

327

Hurst exponent of very long birth time series in XX century Romania. Social and religious aspects  

E-Print Network [OSTI]

The Hurst exponent of very long birth time series in Romania has been extracted from official daily records, i.e. over 97 years between 1905 and 2001 included. The series result from distinguishing between families located in urban (U) or rural (R) areas, and belonging (Ox) or not (NOx) to the orthodox religion. Four time series combining both criteria, (U,R) and (Ox, NOx), are also examined. A statistical information is given on these sub-populations measuring their XX-th century state as a snapshot. However, the main goal is to investigate whether the "daily" production of babies is purely noisy or is fluctuating according to some non trivial fractional Brownian motion, - in the four types of populations, characterized by either their habitat or their religious attitude, yet living within the same political regime. One of the goals was also to find whether combined criteria implied a different behavior. Moreover, we wish to observe whether some seasonal periodicity exists. The detrended fluctuation analysis...

Rotundo, G; Herteliu, C; Ileanu, B

2015-01-01T23:59:59.000Z

328

Electrical conductivity in oxygen-deficient phases of transition metal oxides from first-principles calculations.  

SciTech Connect (OSTI)

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.

Bondi, Robert James; Desjarlais, Michael Paul; Thompson, Aidan Patrick; Brennecka, Geoffrey L.; Marinella, Matthew

2013-09-01T23:59:59.000Z

329

Evidence Against BALS in the X-ray Bright QSO PG1416-129  

E-Print Network [OSTI]

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.

Paul J. Green; Thomas L. Aldcroft; Smita Mathur; Norbert Schartel

1997-02-24T23:59:59.000Z

330

A Full Year's Chandra Exposure on SDSS Quasars from the Chandra Multiwavelength Project  

E-Print Network [OSTI]

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.

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

2008-09-05T23:59:59.000Z

331

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

SciTech Connect (OSTI)

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.

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)

2014-09-15T23:59:59.000Z

332

An In-Situ XAS Study of the Structural Changes in a CuO-CeO2/Al2O3 Catalyst during Total Oxidation of Propane  

SciTech Connect (OSTI)

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.

Silversmith, Geert; Poelman, Hilde; Poelman, Dirk; Gryse, Roger de [Ghent University, Department of Solid State Sciences, Krijgslaan 281 S1, B-9000 Gent (Belgium); Olea, Maria; Balcaen, Veerle; Heynderickx, Philippe; Marin, Guy B. [Ghent University, Laboratorium voor Petrochemische Techniek, Krijgslaan 281 S5, B-9000 Gent (Belgium)

2007-02-02T23:59:59.000Z

333

Automated Fetal Heart Rate Analysis in Labor: Decelerations and Overshoots  

SciTech Connect (OSTI)

Electronic fetal heart rate (FHR) recording is a standard way of monitoring fetal health in labor. Decelerations and accelerations usually indicate fetal distress and normality respectively. But one type of acceleration may differ, namely an overshoot that may atypically reflect fetal stress. Here we describe a new method for detecting decelerations, accelerations and overshoots as part of a novel system for computerized FHR analysis (OxSyS). There was poor agreement between clinicians when identifying these FHR features visually, which precluded setting a gold standard of interpretation. We therefore introduced 'modified' Sensitivity (SE deg.) and 'modified' Positive Predictive Value (PPV deg.) as appropriate performance measures with which the algorithm was optimized. The relation between overshoots and fetal compromise in labor was studied in 15 cases and 15 controls. Overshoots showed promise as an indicator of fetal compromise. Unlike ordinary accelerations, overshoots cannot be considered to be reassuring features of fetal health.

Georgieva, A. E. [Nuffield Department of Obstetrics and Gynaecology, University of Oxford, Level 3 Women's Centre, John Radcliffe Hospital, Oxford OX3 9DU (United Kingdom); Institute of Biomedical Engineering, Department of Engineering Science, University of Oxford, Old Road Campus Research Building Oxford OX3 7DQ (United Kingdom); Payne, S. J. [Institute of Biomedical Engineering, Department of Engineering Science, University of Oxford, Old Road Campus Research Building Oxford OX3 7DQ (United Kingdom); Moulden, M.; Redman, C. W. G. [Nuffield Department of Obstetrics and Gynaecology, University of Oxford, Level 3 Women's Centre, John Radcliffe Hospital, Oxford OX3 9DU (United Kingdom)

2010-10-25T23:59:59.000Z

334

Development of Wind-and-React Bi-2212 Accelerator MagnetTechnology  

SciTech Connect (OSTI)

We report on the progress in our R&D program, targetedto develop the technology for the application of Bi2Sr2CaCu2Ox (Bi-2212)in accelerator magnets. The program uses subscale coils, wound frominsulated cables, to study suitable materials, heat treatmenthomogeneity, stability, and effects ofmagnetic field and thermal andelectro-magnetic loads. We have addressed material and reaction relatedissues and report onthe fabrication, heat treatment, and analysis ofsubscale Bi-2212 coils. Such coils can carry a current on the order of5000 A and generate, in various support structures, magnetic fields from2.6 to 9.9 T. Successful coils are therefore targeted towards a hybridNb3Sn-HTS magnet which will demonstrate the feasibility of Bi-2212 foraccelerator magnets, and open a new magnetic field realm, beyond what isachievable with Nb3Sn.

Godeke, A.; Cheng, D.; Dietderich, D.R.; English, C.D.; Felice,H.; Hannaford, C.R.; Prestemon, S.O.; Sabbi, G.; Scanlan, R.M.; Hikichi,Y.; Nishioka, J.; Hasegawa, T.

2007-08-28T23:59:59.000Z

335

ZnO/Sn:In2O3 and ZnO/CdTe band offsets for extremely thin absorber photovoltaics  

SciTech Connect (OSTI)

Band alignments were measured by x-ray photoelectron spectroscopy for thin films of ZnO on polycrystalline Sn:In2O3 (ITO) and single crystal CdTe. Hybrid density functional theory calculations of epitaxial zinc blende ZnO(001) on CdTe(001) were performed to compare with experiment. A conduction band offset of -0.6 eV was measured for ZnO/ITO, which is larger than desired for efficient electron injection. For ZnO/CdTe, the experimental conduction band offset of 0.25 eV is smaller than the calculated value of 0.67 eV, likely due to the TeOx layer at the ZnO/CdTe interface. The measured conduction band offset for ZnO/CdTe is favorable for photovoltaic devices.

Kaspar, Tiffany C.; Droubay, Timothy C.; Jaffe, John E.

2011-12-28T23:59:59.000Z

336

Investigations on the control of the sorghum midge: Contarinia sorghicola (Coquillett) by the use of insecticides and resistant varieties.  

E-Print Network [OSTI]

txaated fo& r Gogo cfear r&~ of hcnde h?d' el&&OX, . ' ad fX 9&3 tha h&agt ~ 4 00 ~ ~ ~ ~ ~ ~ 4 ~ 0 4 ~ 0 4 ~ 4 ~ 40 ~ ~ 0 ~ ~ ~ ~ ~ 4 ~ 4 ~ 3Q '&coul t&l of in-eeticide tr&fst:. ants far the control of the Serf&;hun oid, . -e an;. ;r&. . '& oor?huxf pl... on Cno Qntoae [!83' Q Gnd ilap e. ke lij60e bnn6Q On Cho av~ er;=, . 8 nnmbar Of aiQge that emerged frOm fiVO haaQO ~ ~ eo $1 , 1/a Coivehrison of 1g vnrietiea of grain' ooxppna CO at taa~w hp 'eho aorghun mid, ?"6 in Cho fielde Data h:-QOQ 'On a...

Doering, George William

2012-06-07T23:59:59.000Z

337

An investigation of the potential plant breeding value of a 30-chromosome hybrid of Sorghum halepense (L.) Pers. X Sorghum vulgare Pers  

E-Print Network [OSTI]

'Omo , '/ ! acne tvigloM lgbz M' 0o8 to Aete~lne ' the, feptlllty. ' . bf'the 'I'-csv". 'hilAg hexoplGNr I. . '- ' . , -'::;='(4) . To oEM'lB 8, ''--:29, cl~bso?8 plf-Gt'. 'wiM x'T1%zGB!6$ wh&cb: is et; leaw:-:eem$Mox-ti1e..., germination perroentggeg gxld tQ produoe mOX'8 abnormal gerhdllngg than thg' plants' with, xlc xshisomex h This exrp eotatioxl w& 8 baaed Cn the SSSIXmpticn that the plrsntg Wi. th -rhisomgg esssese I se shseseeo e ssslIIMne Ss s S ~lslsnss Sh h those...

Mahan, James Loyd

2012-06-07T23:59:59.000Z

338

A study of the relationship between recreational user-day visits and the physical and economic characteristics of Texas water impoundment areas  

E-Print Network [OSTI]

St MldixLg ~ccd f Or 0 OIDPO i 8011 Pu P0888 c C lawson hc18 grOuped tb888 R eas an@ ' aotiViticss into broad Cat8gOX'ice I distz "bLLtiQXL olobe3y' appr01xixIatss thst of' tbe total population. These arei1s are used prizIarlly ln the af'ter work...+ & ~9. n+ 0@@@sex'. Beex'a@4ken~ Pv@e easel An 0 Tea e? Texea Agz culturgal Expex'ix3ent Sea@icn& S@lleWm, 3L01$~ Celle@e S@atien, Tepee, 3. $64 ~3. awe, Balskgh . eed. Reea eh cn Ch e en mie Peli As egfs eg 0 ee Re eie . . ' @Per yx'esenee4& W...

Jones, Ronnie D

2012-06-07T23:59:59.000Z

339

A consumer panel test of Texas fortified red grapefruit juice  

E-Print Network [OSTI]

'. ?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... 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...

Price, Carter

1959-01-01T23:59:59.000Z

340

The language of Milton's Comus  

E-Print Network [OSTI]

To bottomless perdition? there to dweU. Xn kd~tine hains and penal Fire? Mho durst defie th? Qmnipotent to des ]I. L4-48). E Because it is highly inflected? Lati. n does not depend on word order tc be intelligible as must English? which therefore cannot... ?dim spot, " as Th3rsis does in Line $+ Her would he have thought of man as "Confin'd, and pestered in this pin-fold hex e. '4 ~ rr 0C e ox' o on, ed. Jaxms Hell Hanford ]Hew Toxk e oe W x'k ed? Doug as Bush (Boston o N~, ed fhyllis Bi Ti y ese e...

Barnett, Frank Washburn

2012-06-07T23:59:59.000Z

Note: This page contains sample records for the topic "ox yg enates" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

The Jefferson Lab Frozen Spin Target  

SciTech Connect (OSTI)

A frozen spin polarized target, constructed at Jefferson Lab for use inside a large acceptance spectrometer, is described. The target has been utilized for photoproduction measurements with polarized tagged photons of both longitudinal and circular polarization. Protons in TEMPO-doped butanol were dynamically polarized to approximately 90% outside the spectrometer at 5 T and 200-300 mK. Photoproduction data were acquired with the target inside the spectrometer at a frozen-spin temperature of approximately 30 mK with the polarization maintained by a thin, superconducting coil installed inside the target cryostat. A 0.56 T solenoid was used for longitudinal target polarization and a 0.50 T dipole for transverse polarization. Spin relaxation times as high as 4000 hours were observed. We also report polarization results for deuterated propanediol doped with the trityl radical OX063.

Christopher Keith, James Brock, Christopher Carlin, Sara Comer, David Kashy, Josephine McAndrew, David Meekins, Eugene Pasyuk, Joshua Pierce, Mikell Seely

2012-08-01T23:59:59.000Z

342

Computer determination of bacterial volume  

E-Print Network [OSTI]

~, ~ Computer A1". . v', tI'i. : 22 vz: LIST OP TABLES Table I. liean Cellular Volur" ~ nf:-63 i it". , easur ed usinr; Tji!0 (0+ i. u-'tj -o3a, Y e J An- lyzer Ta31e II, &'!ean Cellular Volu", . e of E-6ig Yieasured Uslnq TN 1705 ". 'i. ulti...CCNPU. "ZE D"1 '6 ~'1. '~A""1 iu'i iY EACTEl'. JAi V 'LUV, E 'l'he s i e HAUTE' *8, LIAY. QRJEEES SabFi i te(i 0 'l'ne Gx ala%'6?' c11 ege cf exas A%5: Universi+; pal' t la 1 f a 1 f 1 1 Pen 'h Qf 4' t1 e, '. e ll 'J 3 n e~ en' f ox' 't l i 6...

Griffis, David William

2012-06-07T23:59:59.000Z

343

Decoherence in a Josephson junction qubit  

E-Print Network [OSTI]

The zero-voltage state of a Josephson junction biased with constant current consists of a set of metastable quantum energy levels. We probe the spacings of these levels by using microwave spectroscopy to enhance the escape rate to the voltage state. The widths of the resonances give a measurement of the coherence time of the two states involved in the transitions. We observe a decoherence time shorter than that expected from dissipation alone in resonantly isolated 20 um x 5 um Al/AlOx/Al junctions at 60 mK. The data is well fit by a model including dephasing effects of both low-frequency current noise and the escape rate to the continuum voltage states. We discuss implications for quantum computation using current-biased Josephson junction qubits, including the minimum number of levels needed in the well to obtain an acceptable error limit per gate.

A. J. Berkley; H. Xu; M. A. Gubrud; R. C. Ramos; J. R. Anderson; C. J. Lobb; F. C. Wellstood

2003-03-01T23:59:59.000Z

344

Thermally integrated staged methanol reformer and method  

DOE Patents [OSTI]

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.

Skala, Glenn William (Churchville, NY); Hart-Predmore, David James (Rochester, NY); Pettit, William Henry (Rochester, NY); Borup, Rodney Lynn (East Rochester, NY)

2001-01-01T23:59:59.000Z

345

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]

'ai . ivy. -ioX~&ie6-'Xe;:: -', -. " -':. . ;;, ?, :;=-'--, -', :?. q =. ==-. -~Wm yekkvy~apbM kii4hok-'M4xeleiW-'~ ~:mC ? -' EXCOiCBCCk . $28 ) y, Sg. :C98BQ 5g 4 p3. @5$gRM hli4Z'838 C4X i&5 @tibet 4@BX, ~ B, QgDQ@p. ~ gyle~'ggq@ ~~ ~ ~~w ~ZQSi@B tkg..., giveri poet d4metyx 8't'j-eyeeMfe. te~~ ' . --, 'i~~'-", ~:4emn4a- ef::thj:Xe4ewmgt -eo ji of-;the ~4="'=, -=-" =- -:: ' t -~e' be9ijj eet'Retied~; bent M' oxygen. tempted heeezey cf. -'. oxL4k't'lQxl Qf', eR~sg llpectl'g 4epszl@exlt 'Qp55, ~e4...

Hinesly, Thomas Daniel

1956-01-01T23:59:59.000Z

346

Thermal-mechanical Properties of Epoxy-impregnated Bi-2212/Ag Composite  

SciTech Connect (OSTI)

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, Poissons 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.

Li, Pei; Wang, Yang; Godeke, Arno; Ye, Liyang; Flanagan, Gene; Shen, Tengming

2014-11-26T23:59:59.000Z

347

A distributed converging overland flow model: 2. Effect of infiltration  

E-Print Network [OSTI]

area; f is dependent on the depth of flow h in the following sense: f(x, t) >0 if h(x, t) >0 f(x, t) = 0 if h(x, t) = 0 We will assume further that q(x, t) > f(x, t) O< t < T 0 < x < L(1 - r) where q is the lateral inflow per unit area..., T is the duration of q, L is the length of the converging section, r is the degree of convergence, and x and t are space and time coordinates. Then the continuity and momentum equations are Oh O(uh) uh q- -- q(x, t) -- ](x, t) q- (1) Ot Ox L -- x Q = uh = a...

Sherman, Bernard; Singh, Vijay P.

348

Isobaric incompressibility of the isospin asymmetric nuclear matter  

E-Print Network [OSTI]

The isospin dependence of the saturation properties of asymmetric nuclear matter, particularly the incompressibility $K_\\infty (X) = K_\\infty + K_\\tau X^2 + O(X^4)$ at saturation density is systematically studied using density dependent M3Y interaction. The $K_\\tau$ characterizes the isospin dependence of the incompressibility at saturation density $\\rho_0$. The approximate expression $K_{asy} \\approx K_{sym}-6L$ is often used for $K_\\tau$ where $L$ and $K_{sym}$ represent, respectively, the slope and curvature parameters of the symmetry energy at $\\rho_0$. It can be expressed accurately as $K_\\tau=K_{sym}-6L-\\frac{Q_0}{K_\\infty}L$ where $Q_0$ is the third-order derivative parameter of symmetric nuclear matter at $\\rho_0$. The results of this addendum to Phys. Rev. C 80, 011305(R) (2009) indicate that the $Q_0$ contribution to $K_\\tau$ is not insignificant.

D. N. Basu; P. Roy Chowdhury; C. Samanta

2009-11-09T23:59:59.000Z

349

A critical study of the Boussinesq adaptation of Flamant's plane stress elasticity solution, utilizing the digital computer  

E-Print Network [OSTI]

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...

Moritz, Burt Edwin

1967-01-01T23:59:59.000Z

350

Bubble formation in reservoir fluids at low supersaturations  

E-Print Network [OSTI]

reservoir cox'e, oil and gca obtcfned directly from the Ranf;oly Field in Color: Co, &cod mounted the core in ' Gap'"cr afz'ilier to the coro tlountiflf' re' orted in this ~mr%, Tho oil:nd g:. a ~me reconMned:n the 1abora- tory uith u bubble point ox lg...;te rrd one ron thc c!;-ber ho using, vere coi. "ected to a c ~urce 'f 9. C, current crx'. tc s circuit br+, l. cr &Nicli rc:. iiyc'. ll c. illic-~ores to operate !Lon the v; lvc sto M. ached ti;e pl. ". te the electrical circuit vo 1~'. be closed ~nd...

Wieland, Denton R

1956-01-01T23:59:59.000Z

351

Improvement of wave form of automatic watt regulator  

E-Print Network [OSTI]

. k program was then devised which would add Z& to b55, solve 415, divide by d, and multiply by -pxZL. The data in Table I were determined in this manner. The curve in Figure 3 is a plot of these data. -1. 5X105+jp 0+ J 0 0+ j0 0+Jp 4. 45X10... +Jp 1. 5X10 -j6. 36X10' 0+$6. 36X10 0+jp 0+jp 0+$6. 36X10~ 2. 7X105-$6. 36X10~ 3. 62X10 +Jp 0+ J 0 0+Jp 0+ JO 0+Jp 1. 15X104-$8. 0X10 0+)B. OX105 0+Jp 0+JO -1. 5X105+Jp 0+ J 0 0+J0 0+Jp 1. 5X10 -j6. 36X10 0+~6. 36X10~ 0+ jp 0...

Vick, John Edward

1957-01-01T23:59:59.000Z

352

Comparison of the stress-strain relations of a real soil with those of a simulated soil under triaxial loading conditions  

E-Print Network [OSTI]

-- ?? ] ? '1'lie esu1 La it d ei: ei t or ne" sins otic sn-?e as "lc u:?Lion R. l 7 L et L: i'i, ", G l + 1l ) 3( -ii) 1 1+1?) I l(i-? -) 7 1/2 ai d 1 3 I ? Jtt, (JJ+nn )12 ' '1' " '('. -) 2"('-( '- . . : ? )2' '-!1- ?. . ? ', ? )'/' -1 I ?2 t?mdN) i (. +Ql... s. 'r Li!1-i' 11'ni&! SL!race &sere con&i'Lr&1ctcd l. lun tl&ese cat*i . Tylxl ('U1 carves ax'e s!'&0'is? 1!! Fl. g!&&)" e ~(ra(&sign rs vexe nnsalied. ), ?&San)&re 1oads and. co&net)pundlng (le:oxPsat iur . ". . gi 0!ais f 0!s I l. P L...

Lynch, Frank Lane

2012-06-07T23:59:59.000Z

353

An accounting system for the city of College Station  

E-Print Network [OSTI]

Ag, roval aa to stela and oontsnt rsoomnsndsd: Esnd of Ds?artmsnt of Accountin and Btntlatios Sr noh L. Amis@ ~us% 1940 Suha444e4, 4o 4he PaeuL4p Ot 4he kgrloeleorel aeC Rsehsatoal Coll, ege of vaNea Psrliel. Fail. lhaea4 ef 4he fhguireaenee... shown bp OX' OF COEEEQE STATIC E~~XV~Z ESTXr;Xi. . SC mam@ Glaeeiiioation o i 'Lal. l A tnei Yem Da, e Eetima m DalatlQ8 ol Yeech Form No XX ths short of sooounte ~ Sinos fn~ expenditures oen hest he estimated hp s careful study of past...

Axley, Branch L

1940-01-01T23:59:59.000Z

354

Module Design, Materials, and Packaging Research Team: Activities and Capabilities  

SciTech Connect (OSTI)

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.

McMahon, T. J.; del Cueto, J.; Glick, S.; Jorgensen, G.; Kempe, M.; Kennedy, C.; Pern, J.; Terwilliger, K

2005-01-01T23:59:59.000Z

355

Module Packaging Research and Reliability: Activities and Capabilities  

SciTech Connect (OSTI)

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.

McMahon, T. J.; delCueto, J.; Glick, S.; Jorgensen, G.; Kempe, M.; Pern, J.; Terwilliger, K.

2005-11-01T23:59:59.000Z

356

Bioactive glass coatings for orthopedic metallic implants  

SciTech Connect (OSTI)

The objective of this work is to develop bioactive glass coatings for metallic orthopedic implants. A new family of glasses in the SiO2-Na2O-K2O-CaO-MgO-P2O5 system has been synthesized and characterized. The glass properties (thermal expansion, softening and transformation temperatures, density and hardness) are in line with the predictions of established empirical models. The optimized firing conditions to fabricate coatings on Ti-based and Co-Cr alloys have been determined and related to the glass properties and the interfacial reactions. Excellent adhesion to alloys has been achieved through the formation of 100-200 nm thick interfacial layers (Ti5Si3 on Ti-based alloys and CrOx on Co-Cr). Finally, glass coatings, approximately 100 mu m thick, have been fabricated onto commercial Ti alloy-based dental implants.

Lopez-Esteban, Sonia; Saiz, Eduardo; Fujino, Sigheru; Oku, Takeo; Suganuma, Katsuaki; Tomsia, Antoni P.

2003-06-30T23:59:59.000Z

357

An accounting system for motor taxicab companies  

E-Print Network [OSTI]

gQ 4Qg~p~", . W l' 'I l. ~j I "'fYlATl Q~TQJQ Q;gtpl TQI'M Joe ". . M~tvxa . *. a~is , , ". itlPOV" ' " tel . ,' ~ 'z". . i' ":~&1 O'WtC", L" 1GGN "K!~20(3: Chairman ef Ccmmi&ee A'; AQCOD&F", Fi !'TZ. "~; M!& 'K)TOH TAX1CA3 C':"iP~u'KFJ Joe...~, '", 1"G;, *OZ, "&:. 0'i? . G?". . 'i, '""'. GS 99 "tX:". ;l', L t;Q "C:-"&':. ". uQ ?"2'NilHl 'ilO:. "'". p~ 'ZO "Ql':. "~~:j(F~)CQ. ~Hi'""LGQ :" OX". :% G"-%U . ACOl'QG PAGE n e Drcwe'~e %eat ter Bbeof Gash Weet~~t, end '. 'queutue Jeux~ Gush...

Morris, Joe Milton

1950-01-01T23:59:59.000Z

358

Investigation of forced and isothermal chemical vapor infiltrated SiC/SiC ceramic matrix composites. Final report  

SciTech Connect (OSTI)

Mechanical properties of two different layups for each of the forced CVI (41 specimens) and isothermal CVI (36 specimens) materials were investigated in air at room temperature (RT), 1000C, and at room temperature after thermal shock (RT/TS) and exposure to oxidation (RT/OX). The FCVI specimens had a nominal interfacial coating thickness of 0.3 {mu}m of pyrolytic carbon, while CVI specimens had a coating thickness of 0.1 {mu}m. Effect of reinforcement and interfacial bond on mechanical properties of composite were investigated. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) were employed to analyze the fiber-matrix interface and the toughening mechanisms in this ceramic composite system.

Sankar, J.; Kelkar, A.D.; Vaidyanathan, R. [North Carolina Agricultural and Technical State Univ., Greensboro, NC (United States). Dept. of Mechanical Engineering

1993-09-01T23:59:59.000Z

359

Heterotic Model Building: 16 Special Manifolds  

E-Print Network [OSTI]

We study heterotic model building on 16 specific Calabi-Yau manifolds constructed as hypersurfaces in toric four-folds. These 16 manifolds are the only ones among the more than half a billion manifolds in the Kreuzer-Skarke list with a non-trivial first fundamental group. We classify the line bundle models on these manifolds, both for SU(5) and SO(10) GUTs, which lead to consistent supersymmetric string vacua and have three chiral families. A total of about 29000 models is found, most of them corresponding to SO(10) GUTs. These models constitute a starting point for detailed heterotic model building on Calabi-Yau manifolds in the Kreuzer-Skarke list. The data for these models can be downloaded here: http://www-thphys.physics.ox.ac.uk/projects/CalabiYau/toricdata/index.html

Yang-Hui He; Seung-Joo Lee; Andre Lukas; Chuang Sun

2014-05-13T23:59:59.000Z

360

The osteology of Bufo woodhousi, with comparison to Bufo terrestris  

E-Print Network [OSTI]

. UP FikTR'VQXt ~ Oa ~ 4'is' ~ 1 ~ 4 ~ ~ aa 4 ~ ' ~te isa:4 44 , 68 gPVjMATXO GP PXAL' XXa ~ ~ ~ ~ i ~ ~ ~ ~ aa ~ eie ~ ~ 44 ~ 4 ~ o' ~ 411 ~ 1st 'PO KK4'aTZQH 'QP. , PCS X 4 ~ ~ 4 4 ~ 4 a ~ ' ~ 4 4 4 ~ i 4 4' s ~ ~ 1 ~ i1 ta'4 14 4 4 i ~ ' AT/N 4j.... gg~ (p1. 76) ss coaaeoteg frees Sage+, ets eke ~ieger, . (M9lL) ~bo chs onLy Qx~icm ~ bo %ho snthox ef Vis, -~ of ~o ~lie - +~g cacI~~~g-. ~ ~ ) (p1. ZQ~ ~. gQ- sng 43). ? ciai?sy ~ Qo g~ge ~ontancv (~ en@ %OX) offices ~e, ~csea of the ~an ana...

Baldauf, Richard John

2012-06-07T23:59:59.000Z

Note: This page contains sample records for the topic "ox yg enates" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

Comparison of photelectochemical water oxidation activity of a synthetic photocatalyst system with Photosystem II  

E-Print Network [OSTI]

to literature procedures (Scheme 2a).7a,9 MesoITO was loaded onto an ITO-coated glass slide (VisionTek Systems Ltd) by spreading ITO nanoparticles (Aldrich; size; 27 m2 g#1;1 surface area; 90% In2O3 and 10% SnO2) with a geometric surface area... ;2) TOFd (s#1;1) Stability, t1/2 e (min) IPCEmax f (%) APCEmax f (%) mesoITO|PSII 0.60 0.2 0.3 0.03 #5;4 0.125 0.70 nanoWO3|TiO2|NiOx 0.64 0.7 500 8 #4; 10 #1;4 #5;240 50 80 a MesoITO|PSII was employed as working electrode in a pH 6.5 MES solution. NanoWO3...

Lai, Yi-Hsuan; Kato, Masaru; Mersch, Dirk; Reisner, Erwin

2014-06-12T23:59:59.000Z

362

A resonance-fluorescence measurement of the lifetime of the 1.013 MeV level in ?Al using Compton-scattered gamma rays  

E-Print Network [OSTI]

:; 0"". ;. ;. i F V. l'i~ 'i:1. '! VR'-'"" 6-" 8 4 g / 5 Q3': 86 f: 4" ""'8 t:!" ~ %" '-" 8 Z ' '!'. :. ~', l (' -'&);; ", y ge & p g ja ~y-. g~~~)", $y P tt". "I i!J ':ii:itS S !" QSC ", '*O' "" OI ts'". PGt'I "t f f S!. S i C h ' CO ISDVCS SVO... "88888 f t)' O 888 L&SSTA 84 Eb8 81881K. "li9 SOS' 898188 88818 27 ' !i888888 O S8i85 Gf EKQ CQPPSX COKiP COD 8C8 8 88. f8~8 888l8 g;1. 25 RSS88888 i 8HG 818 CS 548 88888188 Of h8 18C3 i. SiSi 88tl 08 CSOSLk~S P~GKKk9 X'BJS fOX' 548 Sj. QZ18f"m SOC1...

Peticolas, John Davis

1967-01-01T23:59:59.000Z

363

A Chandra Survey of Broad Absorption Line Quasars  

E-Print Network [OSTI]

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.

Paul J. Green; Thomas L. Aldcroft; Smita Mathur; Belinda J. Wilkes; Martin Elvis

2001-05-21T23:59:59.000Z

364

Plate-Based Fuel Processing System Final Report  

SciTech Connect (OSTI)

On-board reforming of liquid fuels into hydrogen is an enabling technology that could accelerate consumer usage of fuel cell powered vehicles. The technology would leverage the convenience of the existing gasoline fueling infrastructure while taking advantage of the fuel cell efficiency and low emissions. Commercial acceptance of on-board reforming faces several obstacles that include: (1) startup time, (2) transient response, and (3) system complexity (size, weight and cost). These obstacles are being addressed in a variety of projects through development, integration and optimization of existing fuel processing system designs. In this project, CESI investigated steam reforming (SR), water-gas-shift (WGS) and preferential oxidation (PrOx) catalysts while developing plate reactor designs and hardware where the catalytic function is integrated into a primary surface heat exchanger. The plate reactor approach has several advantages. The separation of the reforming and combustion streams permits the reforming reaction to be conducted at a higher pressure than the combustion reaction, thereby avoiding costly gas compression for combustion. The separation of the two streams also prevents the dilution of the reformate stream by the combustion air. The advantages of the plate reactor are not limited to steam reforming applications. In a WGS or PrOx reaction, the non-catalytic side of the plate would act as a heat exchanger to remove the heat generated by the exothermic WGS or PrOx reactions. This would maintain the catalyst under nearly isothermal conditions whereby the catalyst would operate at its optimal temperature. Furthermore, the plate design approach results in a low pressure drop, rapid transient capable and attrition-resistant reactor. These qualities are valued in any application, be it on-board or stationary fuel processing, since they reduce parasitic losses, increase over-all system efficiency and help perpetuate catalyst durability. In this program, CESI took the initial steam reforming plate-reactor concept and advanced it towards an integrated fuel processing system. A substantial amount of modeling was performed to guide the catalyst development and prototype hardware design and fabrication efforts. The plate-reactor mechanical design was studied in detail to establish design guidelines which would help the plate reactor survive the stresses of repeated thermal cycles (from start-ups and shut-downs). Integrated system performance modeling was performed to predict system efficiencies and determine the parameters with the most significant impact on efficiency. In conjunction with the modeling effort, a significant effort was directed towards catalyst development. CESI developed a highly active, sulfur tolerant, coke resistant, precious metal based reforming catalyst. CESI also developed its own non-precious metal based water-gas shift catalyst and demonstrated the catalysts durability over several thousands of hours of testing. CESI also developed a unique preferential oxidation catalyst capable of reducing 1% CO to < 10 ppm CO over a 35 C operating window through a single pass plate-based reactor. Finally, CESI combined the modeling results and steam reforming catalyst development efforts into prototype hardware. The first generation 3kW(e) prototype was fabricated from existing heat-exchanger plates to expedite the fabrication process. This prototype demonstrated steady state operation ranging from 5 to 100% load conditions. The prototype also demonstrated a 20:1 turndown ratio, 10:1 load transient operation and rapid start-up capability.

Carlos Faz; Helen Liu; Jacques Nicole; David Yee

2005-12-22T23:59:59.000Z

365

Hydroxylation of p-substituted phenols by tyrosinase: Further insight into the mechanism of tyrosinase activity  

SciTech Connect (OSTI)

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.

Munoz-Munoz, Jose Luis [GENZ - Grupo de Investigacion Enzimologia, Departamento de Bioquimica y Biologia Molecular-A, Facultad de Biologia, Campus Internacional de Excelencia Campus Mare Nostrum, Universidad de Murcia, E-30100 Espinardo, Murcia (Spain)] [GENZ - Grupo de Investigacion Enzimologia, Departamento de Bioquimica y Biologia Molecular-A, Facultad de Biologia, Campus Internacional de Excelencia Campus Mare Nostrum, Universidad de Murcia, E-30100 Espinardo, Murcia (Spain); Berna, Jose [Grupo de Quimica Organica Sintetica, Departamento de Quimica Organica, Facultad de Quimica Campus Internacional de Excelencia Campus Mare Nostrum, Universidad de Murcia (Spain)] [Grupo de Quimica Organica Sintetica, Departamento de Quimica Organica, Facultad de Quimica Campus Internacional de Excelencia Campus Mare Nostrum, Universidad de Murcia (Spain); Garcia-Molina, Maria del Mar; Garcia-Molina, Francisco [GENZ - Grupo de Investigacion Enzimologia, Departamento de Bioquimica y Biologia Molecular-A, Facultad de Biologia, Campus Internacional de Excelencia Campus Mare Nostrum, Universidad de Murcia, E-30100 Espinardo, Murcia (Spain)] [GENZ - Grupo de Investigacion Enzimologia, Departamento de Bioquimica y Biologia Molecular-A, Facultad de Biologia, Campus Internacional de Excelencia Campus Mare Nostrum, Universidad de Murcia, E-30100 Espinardo, Murcia (Spain); Garcia-Ruiz, Pedro Antonio [QCPAI - Grupo de Quimica de Carbohidratos, Polimeros y Aditivos Industriales, Departamento de Quimica Organica, Facultad de Quimica Campus Internacional de Excelencia Campus Mare Nostrum, Universidad de Murcia (Spain)] [QCPAI - Grupo de Quimica de Carbohidratos, Polimeros y Aditivos Industriales, Departamento de Quimica Organica, Facultad de Quimica Campus Internacional de Excelencia Campus Mare Nostrum, Universidad de Murcia (Spain); Varon, Ramon [Departamento de Quimica-Fisica, Escuela de Ingenieros Industriales de Albacete, Universidad de Castilla la Mancha, Avda. Espana s/n. Campus Universitario, E-02071 Albacete (Spain)] [Departamento de Quimica-Fisica, Escuela de Ingenieros Industriales de Albacete, Universidad de Castilla la Mancha, Avda. Espana s/n. Campus Universitario, E-02071 Albacete (Spain); and others

2012-07-27T23:59:59.000Z

366

The Superconductors That Magnets Really Want: What Stands in the Way?  

ScienceCinema (OSTI)

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.

David Larbalestier

2010-01-08T23:59:59.000Z

367

A novel nanostructured composite formed by interaction of copper octa(3-aminopropyl)octasilsesquioxane with azide ligands: Preparation, characterization and a voltammetric application  

SciTech Connect (OSTI)

This study presents the preparation, characterization and application of copper octa(3-aminopropyl)octasilsesquioxane following its subsequent reaction with azide ions (ASCA). The precursor (AC) and the novel compound (ASCA) were characterized by Fourier transform infrared spectra (FTIR), nuclear magnetic resonance (NMR), electron paramagnetic resonance (EPR), scanning electronic microscopy (SEM), X-ray diffraction (XRD), Thermogravimetric analyses and voltammetric technique. The cyclic voltammogram of the modified graphite paste electrode with ASCA (GPE-ASCA), showed one redox couple with formal potential (E{sub 1/2}{sup ox}) = 0.30 V and an irreversible process at 1.1 V (vs. Ag/AgCl; NaCl 1.0 M; v=20mVs{sup -1}). The material is very sensitive to nitrite concentrations. The modified graphite paste electrode (GPE-ASCA) gives a linear range from 1.0 x 10{sup -4} to 4.0 x 10{sup -3} mol L{sup -1} for the determination of nitrite, with a detection limit of 2.1 x 10{sup -4} mol L{sup -1} and the amperometric sensitivity of 8.04 mA/mol L{sup -1}.

Ribeiro do Carmo, Devaney, E-mail: docarmo@dfq.feis.unesp.br [Faculdade de Engenharia de Ilha Solteira UNESP - Univ Estadual Paulista, Departamento de Fisica e Quimica, Av. Brasil Centro, 56 CEP 15385-000, Ilha Solteira, SP (Brazil); Paim, Leonardo Lataro [Instituto de Quimica de Araraquara UNESP - Univ Estadual Paulista, Rua Francisco Degni s/n, CEP 14801-970, Araraquara, SP (Brazil)] [Instituto de Quimica de Araraquara UNESP - Univ Estadual Paulista, Rua Francisco Degni s/n, CEP 14801-970, Araraquara, SP (Brazil); Metzker, Gustavo [Instituto de Quimica de Sao Carlos, Universidade de Sao Paulo, Av. Trabalhador Sao-carlense, 400, 13566-590 Sao Carlos, SP (Brazil)] [Instituto de Quimica de Sao Carlos, Universidade de Sao Paulo, Av. Trabalhador Sao-carlense, 400, 13566-590 Sao Carlos, SP (Brazil); Dias Filho, Newton Luiz [Faculdade de Engenharia de Ilha Solteira UNESP - Univ Estadual Paulista, Departamento de Fisica e Quimica, Av. Brasil Centro, 56 CEP 15385-000, Ilha Solteira, SP (Brazil)] [Faculdade de Engenharia de Ilha Solteira UNESP - Univ Estadual Paulista, Departamento de Fisica e Quimica, Av. Brasil Centro, 56 CEP 15385-000, Ilha Solteira, SP (Brazil); Stradiotto, Nelson Ramos [Instituto de Quimica de Araraquara UNESP - Univ Estadual Paulista, Rua Francisco Degni s/n, CEP 14801-970, Araraquara, SP (Brazil)] [Instituto de Quimica de Araraquara UNESP - Univ Estadual Paulista, Rua Francisco Degni s/n, CEP 14801-970, Araraquara, SP (Brazil)

2010-09-15T23:59:59.000Z

368

A comparison of yellow corn and three sorghum grains with different endosperm types for growing-finishing swine  

E-Print Network [OSTI]

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...'". '* '. ': &RC11 WBS i'"18'M88 vi t1'k 3, JiiX" XAig@ 8. B. f plat CA l'AEAGV8 f'OPi'~ gA Tl' i't&x LG1 tl', f. , ) If jl, t, , t t. ' I t lj '. ' ti. :1. . :t, :!Ill", t:I t. 'l. . flit: I ?I j 'I' lt "I' +tt l;Jk'. StttgltLII gr. 63. tt8 XG f. "4t. gj...

Copelin, Johnny Landon

1973-01-01T23:59:59.000Z

369

Electronic properties of quasi one-dimensional quantum wire models under equal coupling strength superpositions of Rashba and Dresselhaus spin-orbit interactions in the presence of an in-plane magnetic field  

SciTech Connect (OSTI)

In this paper one deals with the theoretical derivation of energy bands and of related wavefunctions characterizing quasi 1D semiconductor heterostructures, such as InAs quantum wire models. Such models get characterized this time by equal coupling strength superpositions of Rashba and Dresselhaus spin-orbit interactions of dimensionless magnitude a under the influence of in-plane magnetic fields of magnitude B. We found that the orientations of the field can be selected by virtue of symmetry requirements. For this purpose one resorts to spin conservations, but alternative conditions providing sensible simplifications of the energy-band formula can be reasonably accounted for. Besides the wavenumber k relying on the 1D electron, one deals with the spin-like s=1 factors in the front of the square root term of the energy. Having obtained the spinorial wavefunction, opens the way to the derivation of spin precession effects. For this purpose one resorts to the projections of the wavenumber operator on complementary spin states. Such projections are responsible for related displacements proceeding along the Ox-axis. This results in a 2D rotation matrix providing both the precession angle as well as the precession axis.

Papp, E. [Physics Department, West University of Timisoara, RO-300223, Timisoara (Romania); Micu, C.; Racolta, D. [Faculty of Science, North University of Baia Mare, RO-430122, Baia Mare (Romania)

2013-11-13T23:59:59.000Z

370

Tax decisions involving the cost method of inventory valuation  

E-Print Network [OSTI]

88 88 88 8 8 8&8~ ""llXXC t'OiM 8G 8 . i'%18 8 OO 802184 Q8PC O 88 8. OlX!f:"?:OT161'lt o2 f vl8?8ox'T 8884? v Pikl%88 6'M88 "h'. , ' o . ' 58818 8x'8 covv'"'oil&g 41'8888& b j' 88QOQ!''8811'""" 88 OV&X@880 O'XGl'f O8p 0:18 l'118i?8'lOll ~ll... A Thesis XVV~yG" V. 'I~j~l('3 'UA lML~1OUXGP~, '?. C 'K'~A i. :93'. , "3:, ' Ql Qkl ~ dQr' & "X6 @jib&(&P~. "-: Q3. Of. ' 'ci. , ": g3, "~~&G'~ Di~CCC ~P "&j&G~ Q 3 ~ f P j P ZB. jiPQC5 ~K';"POQQOP f f f ~ f f f f f. f f f XV . "?PIj"'1Q ?MG3...

McMenamy, Bobby Benton

2012-06-07T23:59:59.000Z

371

Spatially Interpolated Nonlinear Anodization in Synthetic Aperture Radar Imagery  

SciTech Connect (OSTI)

Spatially Interpolated Nonlinear Anodization in Synthetic Aperture Original formulation of spatially variant anodization for complex synthetic aperture radar (SAR) imagery oversampled at twice the Nyquist rate (2.OX). Here we report a spatially interpolating, noninteger-oversampled SVA sidelobe. The pixel's apparent IPR location is assessed by comparing its value to the sum of its value plus weighted comparable for exact interpolation. However, exact interpolation implies an ideal sine interpolator3 and large components may not be necessary. Note that P is the summation of IPR diagonal values. The value of a sine IPR on the diagonals is a sine-squared; values much less than cardinal direction (m, n) values. This implies that cardinal direction interpolation requires higher precision than diagonal interpolation. Consequently, we employed a smaller set. The spatially interpolated SVA used an 8-point/4-point sine interpolator described above. Table 1 shows the Table 1 results show a two-times speed-up using the 1.3x oversampled and spatially interpolated SVA over the Figure 1d. Detected results of 1.3x oversampled sine interpolated spatially variant

Eichel, Paul H.; Jakowatz, Jr., Charles V.; Yocky, David A.

1999-06-29T23:59:59.000Z

372

Interpretation of blazar SEDs based on broad band quasi-simultaneous observations  

E-Print Network [OSTI]

We study the quasi-simultaneous Spectral Energy Distributions (SED) of 48 LBAS blazars, collected within three months of the Fermi LAT Bright AGN Sample (LBAS) data taking period, combining Fermi and Swift data with radio NIR-Optical and hard-X/gamma-ray data. We have used these SEDs to characterize the peak position and intensity of both the low and the high-energy features of blazar spectra. The results have been used to derive empirical relationships that estimate the position of the two peaks from the broad-band colors (i.e. the radio to optical, alpha_ro, and optical to X-ray, alpha_ox, spectral slopes) and from the gamma-ray spectral index. Our data show that the synchrotron peak frequency is positioned between 10^(12.5) and 10^(14.5) Hz in broad-lined FSRQs and between 10^(13) and 10^(17) Hz in featureless BL Lacertae objects. We find that the gamma-ray spectral slope is strongly correlated with the synchrotron peak energy and with the X-ray spectral index, as expected at first order in synchrotron - i...

Raino', S; Colafrancesco, S; Giommi, P; Tramacere, A

2009-01-01T23:59:59.000Z

373

Logical foundation of theoretical physics  

E-Print Network [OSTI]

This is the logical foundation for for Relativity Theory, Probability Theory, and for Quantum Theory. Contents is the following: 1 Introduction. 2 Classical logic. 3 Time and space. 3.1 Recorders. 3.2 Time. 3.3 Space. 3.4 Relativity. 4. Probability. 4.1 B-functions. 4.2 Independent tests. 4.3 Function of probability. 4.4 Conditional probability. 4.5 Classical probability 4.6 B-functions and classical propositional logic. 4.7 Consistency of the probability function. 4.7.1 Nonstandard numbers. 4.7.2 Model. 5. Quantum theory. 5.1 Events and the moving equations. 5.2 Rotations of the x5Ox4 system and B-bosonn. 5.3 Masses. 5.4 The one-mass states, particles and antiparticles. 5.5 The two-masses states. 5.5.1 Neutrinno. 5.5.2 Electroweak transformations. 5.6 Rotations of the Cartesian coordinates system and quarrks. 5.7 Gustatory pentads. 5.8 Two events. 5.9 The dimension of physical space. 5.10 The events-probability interpretation of Quantum Theory. 6. Conclusion.

G. A. Quznetsov

2005-08-07T23:59:59.000Z

374

Pseudo-capacitor device for aqueous electrolytes  

DOE Patents [OSTI]

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

Prakash, J.; Thackeray, M.M.; Dees, D.W.; Vissers, D.R.; Myles, K.M.

1998-11-24T23:59:59.000Z

375

Complementarity problems for two pairs of charged bodies  

E-Print Network [OSTI]

We consider an interaction of charged bodies under the following simplified conditions: the distribution of charge over each body is stable; the interaction of bodies is governed by electrical forces only. Physically, these assumptions can be treated as the following decomposition of charges: the structure of each body is assumed to be stable due to inner forces (say, quantum forces [1]), which do not influence the interaction of the bodies; the bodies interact due to the classical electrical forces [2] only. In this model, the role of inner forces is to create a specific stable distribution of the charge over a body. We assume that the charge distribution over a body can be described by the density of the charge. In our model, the distribution of the charge is the property of a body and does not change in the process of the bodies' interaction. For the simplicity we assume that the bodies are similar in the sense of geometry, say, occupy domain $Q$ and have a preferable direction of interaction denoted by $Ox_3$.

A. A. Kolpakov; A. G. Kolpakov

2012-07-05T23:59:59.000Z

376

The Relation of the Phosphoric Acid of the Soil to Pot Experiments.  

E-Print Network [OSTI]

.6 62.4 56.1 67.2 50.0 Phosphoric Ac~d per Million of soil 3.9 6.0 9.9 17.6 12.5 KN Total gm. 16.9 28.8 33.1 57.2 45.4 Phos horic ~ciBper crop gm. .0178 .0323 .0384 .OX01 .0539 KN per crop gm. 8.5 14.4 16.6 28.6 22....87 17.36 15.38 11.92 18.97 31.01 31.75 22.12 Crop No. 2-Sorghum KN.. ............................. 7.71 9.99 11.17 11.86 11.25 8.23 14.14 26.21 18.98 20.18 Crop No. 3-Corn KN. ................................. 9.39 6.60 12.60 11.01 10.59 5.03 10...

Fraps, G. S. (George Stronach)

1920-01-01T23:59:59.000Z

377

Fabrication and measurements of hybrid Nb/Al Josephson junctions and flux qubits with pi-shifters  

E-Print Network [OSTI]

We describe fabrication and testing of composite flux qubits combining Nb- and Al-based superconducting circuit technology. This hybrid approach to making qubits allows for employing pi-phase shifters fabricated using well-established Nb-based technology of superconductor-ferromagnet-superconductor Josephson junctions. The important feature here is to obtain high interface transparency between Nb and Al layers without degrading sub-micron shadow mask. We achieve this by in-situ Ar etching using e-beam gun. Shadow-evaporated Al/AlOx/Al Josephson junctions with Nb bias pads show the expected current-voltage characteristics with reproducible critical currents. Using this technique, we fabricated composite Nb/Al flux qubits with Nb/CuNi/Nb pi-shifters and measured their magnetic field response. The observed offset between the field responses of the qubits with and without pi-junction is attributed to the pi phase shift. The reported approach can be used for implementing a variety of hybrid Nb/Al superconducting quantum circuits.

A. V. Shcherbakova; K. G. Fedorov; K. V. Shulga; V. V. Ryazanov; V. V. Bolginov; V. A Oboznov; S. V. Egorov; V. O. Shkolnikov; M. J. Wolf; D. Beckmann; A. V. Ustinov

2014-05-02T23:59:59.000Z

378

On the origin of the C IV Baldwin effect in AGN  

E-Print Network [OSTI]

The origin of the luminosity dependence of the equivalent width (EW) of broad emission lines in AGN (the Baldwin effect) is not firmly established yet. We explore this question for the broad C IV \\lambda 1549 line using the Boroson & Green sample of the 87 z < 0.5 Bright Quasar Survey (BQS) quasars. Useful UV spectra of the C IV region are available for 81 of the objects, which are used to explore the dependence of the C IV EW on various emission properties. We confirm earlier results on the strong correlations of the C IV EW with some of the emission parameters which define the Boroson & Green Eigenvector 1, and with the optical to X-ray slope \\alpha_ox. In addition, we find a strong correlation of the C IV EW with the relative accretion rate, L/L_Edd. Since L/L_Edd drives some of the Eigenvector 1 correlations, it may be the primary physical parameter which drives the Baldwin effect for C IV.

Alexei Baskin; Ari Laor

2004-03-16T23:59:59.000Z

379

DNA nanotechnology: understanding and optimisation through simulation  

E-Print Network [OSTI]

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.

Thomas E. Ouldridge

2014-11-07T23:59:59.000Z

380

A comparison of gasoline and LP-gas as a fuel for medium or small size farm tractors  

E-Print Network [OSTI]

Veriaue Krie@e eiah Qaapreeeien aetie OT Vs@8sl ~ QGZ'Bur'656k $8 baitlaa 62 94 j OT r&JRXiRRlr&Is a a o XXo IIXX'66K 6Z Type ar 'net ~n nil Qenevmpaian e i6 66 6 6 I 4" ue 1 k9 ir' ' i2 e'er'6 L~e~apek R aur'6 iRuUl pewGp (2 nil Znr 6 8 Vie & per'6 t'9... en) o a K~eiivexed Gee@ 6Z XP~G@6 in LIif. emnt +FGS!6 a o o s a o a a o a o a a o a a a a XWQ ~viXtax' QleL%9 aa a%ox'688 4K@ el@cs?e O~h~e89AR'6laxx ce ?x~ PyeQ 8? Zagga~ Boa@ az Qx'e pe~em+a e~v pxaxeeeax af kgxlaalCuxel I"aglnaexin~, Ap*"3...

Maher, Thomas Francis

1952-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "ox yg enates" from the National Library of EnergyBeta (NLEBeta).
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We encourage you to perform a real-time search of NLEBeta
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381

The role of loop stacking in the dynamics of DNA hairpin formation  

E-Print Network [OSTI]

We study the dynamics of DNA hairpin formation using oxDNA, a nucleotide-level coarse-grained model of DNA. In particular, we explore the effects of the loop stacking interactions and non-native base pairing on the hairpin closing times. We find a non-monotonic variation of the hairpin closing time with temperature, in agreement with the experimental work of Wallace et al. [Proc. Nat. Acad. Sci. USA 2001, 98, 5584-5589]. The hairpin closing process involves the formation of an initial nucleus of one or two bonds between the stems followed by a rapid zippering of the stem. At high temperatures, typically above the hairpin melting temperature, an effective negative activation enthalpy is observed because the nucleus has a lower enthalpy than the open state. By contrast, at low temperatures, the activation enthalpy becomes positive mainly due to the increasing energetic cost of bending a loop that becomes increasingly highly stacked as the temperature decreases. We show that stacking must be very strong to induce this experimentally observed behavior, and that the existence of just a few weak stacking points along the loop can substantially suppress it. Non-native base pairs are observed to have only a small effect, slightly accelerating hairpin formation.

Majid Mosayebi; Flavio Romano; Thomas E. Ouldridge; Ard A. Louis; Jonathan P. K. Doye

2014-10-05T23:59:59.000Z

382

Solar-to-Hydrogen Photovoltaic/Photoelectrochemical Devices Using Amorphous Silicon Carbide as the Photoelectrode  

SciTech Connect (OSTI)

We report the use of hydrogenated amorphous silicon carbide (a-SiC:H) prepared by plasma enhanced chemical vapor deposition (PECVD) as the photoelectrode in an integrated 'hybrid' photoelectrochemical (PEC) cell to produce hydrogen directly from water using sunlight. Results on the durability of hydrogenated amorphous silicon carbide (a-SiC:H) photoelectrodes in an electrolyte are presented. In a pH2 electrolyte, the a-SiC:H photoelectrode exhibits excellent stability for 100 hour test so far performed. A photocurrent onset shift (anodically) after a 24- or 100-hour durability test in electrolyte is observed, likely due to changes in the surface chemical structure of the a-SiC:H photoelectrode. It is also observed that a thin SiOx layer native to the air exposed surface of the a-SiC:H affects the photocurrent and the its onset shift. Finally, approaches for eliminating the external bias voltage and enhancing the solar-to-hydrogen efficiency in a PV/PEC hybrid structure to achieve {>=} 10% are presented.

Hu, J.; Zhu, F.; Matulionis, I.; Kunrath, A.; Deutsch, T.; Kuritzky, L.; Miller, E.; Madan, A.

2008-01-01T23:59:59.000Z

383

X-ray Properties of Intermediate-mass Black Holes in Active Galaxies  

E-Print Network [OSTI]

We present a pilot study of the X-ray properties of intermediate-mass (~10^5-10^6 M_sun) black holes in active galaxies using the Chandra X-ray telescope. Eight of the 10 active galaxies are detected with a significance of at least 3 sigma, with X-ray luminosities in the range L_(0.5-2 keV) ~ 10^41-10^43 ergs/s. The optical-to-X-ray flux ratios are consistent with expectations, given the known correlations between alpha_ox and ultraviolet luminosity, while a couple of objects appear to be anomalously X-ray weak. The range of 0.5--2 keV photon indices we measure, 1 X-ray spectral index. On the other hand, we do find evidence for a correlation between X-ray power-law slope and both X-ray luminosity and Eddington ratio, which may suggest that X-ray emission mechanisms weaken at high Eddington ratio. Such a weakening may explain the X-ray weakness of one of our most optically luminous objects.

Jenny E. Greene; Luis C. Ho

2006-08-02T23:59:59.000Z

384

The amphibians and reptiles of Luzon Island, Philippines, VIII: the herpetofauna of Cagayan and Isabela Provinces, northern Sierra Madre Mountain Range  

E-Print Network [OSTI]

id ac ty lu s p la ty ur us ( Sc hn ei de r, 17 92 ) O H em id ac ty lu s s te jn eg er i O ta & H ik id a, 1 98 9 N L ep id od ac ty lu s c f. lu gu br is ( D um r il & B ib ro n, 1 83 6) N N Lu pe ro sa ur us c f. ku bl i B ro w n, D... el ap hi s l uz on en si s L ev it on 1 96 1* N N D en dr el ap hi s m ar en ae V og el & v an R oo ije n, 2 00 8 N N D ry op hi op s p hi lip pi na B ou le ng er , 1 89 6 N N G on yo so m a ox yc ep ha lu m ( B oi e, 1 82 7) N N H ol og er...

Brown, Rafe M.; Siler, Cameron David; Oliveros, Carl Hirang; Welton, Luke J.; Rock, Ashley; Swab, John; Van Weerd, Merlijn; Van Beijnen, Jonah; Jose, Edgar; Rodriguez, Dominic; Jose, Edmund; Diesmos, Arvin C.

2013-07-02T23:59:59.000Z

385

SECA Coal-Based Systems - LGFCS  

SciTech Connect (OSTI)

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.

Goettler, Richard

2013-08-01T23:59:59.000Z

386

A series of Cd(II) complexes with {pi}-{pi} stacking and hydrogen bonding interactions: Structural diversities by varying the ligands  

SciTech Connect (OSTI)

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.

Wang Xiuli, E-mail: wangxiuli@bhu.edu.c [Faculty of Chemistry and Chemical Engineering, Bohai University, Jinzhou 121000 (China); Zhang Jinxia; Liu Guocheng; Lin Hongyan [Faculty of Chemistry and Chemical Engineering, Bohai University, Jinzhou 121000 (China)

2011-02-15T23:59:59.000Z

387

Unraveling the Active Site in Copper-ceria Systems for the Water Gas Shift Reaction: In-situ Characterization of an Inverse Powder CeO2-x/CuO-Cu Catalyst  

SciTech Connect (OSTI)

An inverse powder system composed of CeO{sub 2} nanoparticles dispersed over a CuO-Cu matrix is proposed as a novel catalyst for the water-gas shift reaction. This inverse CeO{sub 2}/CuO-Cu catalyst exhibits a higher activity than standard Cu/CeO{sub 2} catalysts. In situ synchrotron characterization techniques were employed to follow the structural changes of CeO{sub 2}/CuO-Cu under reaction conditions. Time-resolved X-ray diffraction experiments showed the transformation of CuO to metallic Cu via a Cu{sub 2}O intermediate. Short-order structural changes were followed by pair distribution function analysis and corroborated the results obtained by diffraction. Moreover, X-ray absorption spectroscopy also revealed oxidation state changes from Cu{sup 2+} to Cu{sup 0} and the partial reduction of CeOx nanoparticles. The activity data obtained by mass spectrometry revealed that hydrogen production starts once the copper has been fully reduced. The strong interaction of ceria and copper boosted the catalytic performance of the sample. The inverse catalyst was active at low temperatures, stable to several reaction runs and to redox cycles. These characteristics are highly valuable for mobile fuel cell applications. The active phases of the inverse CeO{sub 2}/CuO-Cu catalyst are partially reduced ceria nanoparticles strongly interacting with metallic copper. The nature and structure of the ceria nanoparticles are of critical importance because they are involved in processes related to water dissociation over the catalyst surface.

Rodriguez, J.A.; Barrio, L.; Estrella, M.; Zhou, G.; Wen, W.; Hanson, J.C.; Hungra, A.B.; Horns, A.; Fernndez-Garca, M.; Arturo Martnez-Arias, A.

2010-03-04T23:59:59.000Z

388

Geothermal Target Areas in Colorado as Identified by Remote Sensing Techniques  

SciTech Connect (OSTI)

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) WGS1984 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

Hussein, Khalid

2012-02-01T23:59:59.000Z

389

Synthesis and Evaluation of Cu-SAPO-34 Catalysts for Ammonia Selective Catalytic Reduction. 1. Aqueous Solution Ion Exchange  

SciTech Connect (OSTI)

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 DOEs 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.

Gao, Feng; Walter, Eric D.; Washton, Nancy M.; Szanyi, Janos; Peden, Charles HF

2013-09-06T23:59:59.000Z

390

Understanding the origin of high-rate intercalation pseudocapacitance in Nb2O5 crystals  

SciTech Connect (OSTI)

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.

Ganesh, Panchapakesan [ORNL] [ORNL; Kent, P. R. C. [University of Tennessee, Knoxville (UTK)] [University of Tennessee, Knoxville (UTK); Sumpter, Bobby G [ORNL] [ORNL; Lubimtsev, Andrew A [ORNL] [ORNL

2013-01-01T23:59:59.000Z

391

High-k dielectrics on (100) and (110) n-InAs: Physical and electrical characterizations  

SciTech Connect (OSTI)

Two high-k dielectric materials (Al{sub 2}O{sub 3} and HfO{sub 2}) were deposited on n-type (100) and (110) InAs surface orientations to investigate physical properties of the oxide/semiconductor interfaces and the interface trap density (D{sub it}). X-ray photoelectron spectroscopy analyses (XPS) for native oxides of (100) and (110) as-grown n-InAs epi wafers show an increase in As-oxide on the (100) surface and an increase in InOx on the (110) surface. In addition, XPS analyses of high-k (Al{sub 2}O{sub 3} and HfO{sub 2}) on n-InAs epi show that the intrinsic native oxide difference between (100) and (110) epi surfaces were eliminated by applying conventional in-situ pre-treatment (TriMethyAluminium (TMA)) before the high-k deposition. The capacitance-voltage (C-V) characterization of HfO{sub 2} and Al{sub 2}O{sub 3} MOSCAPs on both types of n-InAs surfaces shows very similar C-V curves. The interface trap density (D{sub it}) profiles show D{sub it} minima of 6.1 10{sup 12}/6.5 10{sup 12} and 6.6 10{sup 12}/7.3 10{sup 12} cm{sup ?2} eV{sup ?1} for Al{sub 2}O{sub 3} and HfO{sub 2}, respectively for (100) and (110) InAs surfaces. The similar interface trap density (D{sub it}) on (100) and (110) surface orientation were observed, which is beneficial to future InAs FinFET device with both (100) and (110) surface channel orientations present.

Wang, C. H., E-mail: chwangz@tsmc.com; Hsu, W. C. [Institute of Microelectronics, Department of Electrical Engineering, National Cheng Kung University, Tainan 701, Taiwan (China)] [Institute of Microelectronics, Department of Electrical Engineering, National Cheng Kung University, Tainan 701, Taiwan (China); Doornbos, G.; Astromskas, G.; Vellianitis, G.; Oxland, R.; Holland, M. C.; Passlack, M. [TSMC, Kapeldreef 75, 3001 Leuven (Belgium)] [TSMC, Kapeldreef 75, 3001 Leuven (Belgium); Huang, M. L.; Lin, C. H.; Hsieh, C. H.; Chang, Y. S.; Lee, T. L.; Chen, Y. Y.; Diaz, C. H. [TSMC, 168 Park Ave. 2, Hsinchu Science Park, Hsinchu, Taiwan 300 (China)] [TSMC, 168 Park Ave. 2, Hsinchu Science Park, Hsinchu, Taiwan 300 (China); Ramvall, P.; Lind, E.; Wernersson, L.-E. [Lund University, Box 118, 22100 Lund (Sweden)] [Lund University, Box 118, 22100 Lund (Sweden); Droopad, R. [Ingram School of Engineering, Texas State University, San Marcos, TX 78666 (United States)] [Ingram School of Engineering, Texas State University, San Marcos, TX 78666 (United States)

2014-04-15T23:59:59.000Z

392

Solid-State 55Mn NMR Spectroscopy of bis(?-oxo)dimanganese(IV) [Mn2O2(salpn)2], a Model for the Oxygen Evolving Complex in Photosystem II  

SciTech Connect (OSTI)

Given the obvious global energy needs, it has become imperative to develop a catalytic process for converting water to molecular oxygen and protons. Many have sought to understand the details of photosynthesis and in particular the water splitting reaction to help in the development of the appropriate catalysis.1-3 While the scientific community has made great strides towards this goal, it has fallen short at the critical stage of the determination of the structure associated with the oxygen evolving complex (OEC) within photosystem II (PSII).4,5 Despite the existence of x-ray structures of PSII,6-8 the best data we have for the structure of the OEC comes from models derived from EPR and EXAFS measurements.9-14 This experimental situation has led to collaborations with theoreticians to enable the development of models for the structure of the OEC where the experimental observables (EXAFS and magnetic resonance parameters) serve as constraints to the theoretical calculations. Of particular interest to this study is the observation of the S1 state of the Kok cycle15 where the core of the OEC can be described as a tetranuclear manganese cluster composed of Mn4OxCa. The simplest model for the OEC can be thought of as two Mn-pairs and a Ca2+ where each Mn-pair is antiferromagnetically coupled to its partner. We utilize the term "pair" to describe the Mn atoms within the OEC with the same oxidation state, which for the S1 state is (Mn2(III, III) and Mn2(IV, IV)).16 It is unclear as to the degree of interaction between the pairs as well as the role of the Ca2+. At cryogenic temperatures the S1 state of the OEC is diamagnetic and in principle amenable to solid-state NMR experiments.

Ellis, Paul D.; Sears, Jesse A.; Yang, Ping; Dupuis, Michel; Boron, Ted; Pecoraro, Vince; Stich, Troy; Britt, R. David; Lipton, Andrew S.

2010-12-01T23:59:59.000Z

393

Thermodynamics of Uranyl Minerals: Enthalpies of Formation of Uranyl Oxide Hydrates  

SciTech Connect (OSTI)

The enthalpies of formation of seven uranyl oxide hydrate phases and one uranate have been determined using high-temperature oxide melt solution calorimetry: [(UO{sub 2}){sub 4}O(OH){sub 6}](H{sub 2}O){sub 5}, metaschoepite; {beta}-UO{sub 2}(OH){sub 2}; CaUO{sub 4}; Ca(UO{sub 2}){sub 6}O{sub 4}(OH){sub 6}(H{sub 2}O){sub 8}, becquerelite; Ca(UO{sub 2}){sub 4}O{sub 3}(OH){sub 4}(H{sub 2}O){sub 2}; Na(UO{sub 2})O(OH), clarkeite; Na{sub 2}(UO{sub 2}){sub 6}O{sub 4}(OH){sub 6}(H{sub 2}O){sub 7}, the sodium analogue of compreignacite and Pb{sub 3}(UO{sub 2}){sub 8}O{sub 8}(OH){sub 6}(H{sub 2}O){sub 2}, curite. The enthalpy of formation from the binary oxides, {Delta}H{sub f-ox}, at 298 K was calculated for each compound from the respective drop solution enthalpy, {Delta}H{sub ds}. The standard enthalpies of formation from the elements, {Delta}H{sub f}{sup o}, at 298 K are -1791.0 {+-} 3.2, -1536.2 {+-} 2.8, -2002.0 {+-} 3.2, -11389.2 {+-} 13.5, -6653.1 {+-} 13.8, -1724.7 {+-} 5.1, -10936.4 {+-} 14.5 and -13163.2 {+-} 34.4 kJ mol{sup -1}, respectively. These values are useful in exploring the stability of uranyl oxide hydrates in auxiliary chemical systems, such as those expected in U-contaminated environments.

K. Kubatko; K. Helean; A. Navrotsky; P.C. Burns

2005-05-11T23:59:59.000Z

394

High temperature solar selective coatings  

DOE Patents [OSTI]

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.

Kennedy, Cheryl E

2014-11-25T23:59:59.000Z

395

The Relationship Between the High Energy Continuum and Emission Lines in QSOs: A Low-Redshift Sample  

E-Print Network [OSTI]

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.

Paul J. Green

1996-03-18T23:59:59.000Z

396

A Method to Increase Current Density in a Mono Element Internal Tin Processed Superconductor Utilizing Zr Oxide to Refine Grain Size  

SciTech Connect (OSTI)

The effect of Oxygen on (Nb1Zr)3Sn multifilament conductors manufactured by the Mono Element Internal Tin (MEIT) process was explored to improve the current density by refining the grain size. This followed work first done by General Electric on the Nb3Sn tape process. Techniques to fabricate the more difficult Nb1Zr composites are described and allowed fabrication of long lengths of .254 mm diameter wire from an 88.9 mm diameter billet. Oxygen was incorporated through the use of SnO2 mixed with tin powder and incorporated into the core. These were compared to samples with Ti+Sn and Cu+Sn cores. Heat treatments covered the range of 700 C to 1000 C. Current density vs. H, grain size, and reaction percentages are provided for the materials tested. The Oxygen gave superior results in the temperature range of 815-1000 C. It also stabilized the filament geometry of the array in comparison to the other additions at the higher temperatures. At 815 C a peak in layer Jc yielded values of 2537 A/mm2 at 12 T and 1353 A/mm2 at 15T, 8-22% and 30-73% greater respectively than 700 C values. Results with Oxygen at high temperature show the possibility of high speed continuous reaction of the composite versus the current batch or react in place methods. In general the Ti additions gave superior results at the lower reaction temperature. Future work is suggested to determine if the 815 C reaction temperature can lead to higher current density in high tin (Nb1Zr+Ox)3Sn conductors. A second technique incorporated oxygen directly into the Nb1Zr rods through heat treatment with Nb2O5 at 1100 C for 100 hours in vacuum prior to extrusion. The majority of the filaments reduced properly in the composite but some local variations in hardness led to breakage at smaller diameters.

Bruce A. Zeitlin, Eric Gregory

2008-04-07T23:59:59.000Z

397

Structural study of biotic and abiotic poorly-crystalline manganese oxides using atomic pair distribution function analysis  

SciTech Connect (OSTI)

Manganese (Mn) oxides are among the most reactive natural minerals and play an important role in elemental cycling in oceanic and terrestrial environments. A large portion of naturally-occurring Mn oxides tend to be poorly-crystalline and/or nanocrystalline, with not fully resolved crystal structures. In this study, the crystal structures of their synthetic analogs including acid birnessite (AcidBir), {delta}-MnO{sub 2}, polymeric MnO{sub 2} (PolyMnO{sub 2}) and a bacteriogenic Mn oxide (BioMnO{sub x}), have been revealed using atomic pair distribution function (PDF) analysis. Results unambiguously verify that these Mn oxides are layered materials. The best models that accurately allow simulation of pair distribution functions (PDFs) belong to the monoclinic C12/m1 space group with a disk-like shape. The single MnO{sub 6} layers in the average structures deviate significantly from hexagonal symmetry, in contrast to the results of previous studies based on X-ray diffraction analysis in reciprocal space. Manganese occupancies in MnO{sub 6} layers are estimated to be 0.936, 0.847, 0.930 and 0.935, for AcidBir, BioMnOx, {delta}-MnO{sub 2} and PolyMnO{sub 2}, respectively; however, occupancies of interlayer cations and water molecules cannot be accurately determined using the models in this study. The coherent scattering domains (CSDs) of PolyMnO{sub 2}, {delta}-MnO{sub 2} and BioMnO{sub x} are at the nanometer scale, comprising one to three MnO{sub 6} layers stacked with a high disorder in the crystallographic c-axis direction. Overall, the results of this study advance our understanding of the mineralogy of Mn oxide minerals in the environment.

Zhu, Mengqiang; Farrow, Christopher L.; Post, Jeffrey E.; Livi, Kenneth J.T.; Billinge, Simon J.L.; Ginder-Vogel, Matthew; Sparks, Donald L. (Delaware); (Columbia); (JHU); (Smithsonian)

2012-03-15T23:59:59.000Z

398

On the afterglow and host galaxy of GRB 021004: A comprehensivestudy with the Hubble Space Telescope1  

SciTech Connect (OSTI)

We report on Hubble Space Telescope (HST) observations of the late-time afterglow and host galaxy of GRB 021004 (z = 2.33).Although this gamma-ray burst (GRB) is one of the best observed so far in terms of sampling in the time domain, multi-wavelength coverage and polarimetric observations, there is large disagreement between different measurements and interpretations of this burst in the literature. We have observed the field of GRB 021004 with the HST at multiple epochs from 3 days until almost 10 months after the burst. With STI S prism and G430L spectroscopy we cover the spectral region from about 2000 Angstrom to 5700 Angstrom corresponding to 600 1700 Angstrom in the rest frame. From the limit on the flux recovery bluewards of the Lyman-limit we constrain the H I column density to be above 1 x 1018 cm-2 (5 sigma). Based on ACS and N ICMOS imaging we find that the afterglow evolved a chromatically within the errors (any variation must be less then 5 percent) during the period of HST observations. The color changes observed by other authors during the first four days must be related to a 'noisy' phenomenon superimposed on an afterglow component with a constant spectral shape. This also means that the cooling break has remained on the blue side of the optical part of the spectrum for at least two weeks after the explosion. The optical to X-ray slope OX is consistent with being the same at 1.4 and 52.4 days after the burst. This indicates that the cooling frequency is constant and hence, according to fireball models, that the circumburst medium has a constant density profile. The late-time slope of the light curve (alpha 2, F nu proportional to t-alpha2) is in the range 2 = 1.8-1.9, although inconsistent with a single power-law. This could be due to a late-time flattening caused by the transition to non-relativistic expansion or due to excess emission (a 'bump' in the light curve) about 7 days afterburst. The host galaxy is like most previously studied GRB hosts a (very) blue starburst galaxy with no evidence for dust and with strong Ly emission. The star-formation rate of the host is about 10 M solar mass yr-1 based on both the strength of the UV continuum and on the Ly alpha luminosity. The spectral energy distribution of the host implies an age in the range 30-100 Myr for the dominant stellar population.

Fynbo, J.P.U.; Gorosabel, J.; Smette, A.; Fruchter, A.; Hjorth,J.; Pedersen, K.; Levan, A.; Burud, I.; Sahu, K.; Vreeswijk, P.M.; Bergeron, E.; Kouveliotou1, C.; Tanvir, N.; Thorsett11, S.E.; Wijers,R.A.M.J.; Castro Ceron, J.M.; Castro-Tirado, A.; Garnavich, P.; Holland,S.T.; Jakobsson, P.; Moller, P.; Nugent, P.; Pian, E.; Rhoads, J.; Thomsen, B.; Watson, D.; Woosley, S.

2004-12-01T23:59:59.000Z

399

Recovery Act: Novel Oxygen Carriers for Coal-fueled Chemical Looping  

SciTech Connect (OSTI)

Chemical Looping Combustion (CLC) could totally negate the necessity of pure oxygen by using oxygen carriers for purification of CO{sub 2} stream during combustion. It splits the single fuel combustion reaction into two linked reactions using oxygen carriers. The two linked reactions are the oxidation of oxygen carriers in the air reactor using air, and the reduction of oxygen carriers in the fuel reactor using fuels (i.e. coal). Generally metal/metal oxides are used as oxygen carriers and operated in a cyclic mode. Chemical looping combustion significantly improves the energy conversion efficiency, in terms of the electricity generation, because it improves the reversibility of the fuel combustion process through two linked parallel processes, compared to the conventional combustion process, which is operated far away from its thermo-equilibrium. Under the current carbon-constraint environment, it has been a promising carbon capture technology in terms of fuel combustion for power generation. Its disadvantage is that it is less mature in terms of technological commercialization. In this DOE-funded project, accomplishment is made by developing a series of advanced copper-based oxygen carriers, with properties of the higher oxygen-transfer capability, a favorable thermodynamics to generate high purity of CO{sub 2}, the higher reactivity, the attrition-resistance, the thermal stability in red-ox cycles and the achievement of the auto-thermal heat balance. This will be achieved into three phases in three consecutive years. The selected oxygen carriers with final-determined formula were tested in a scaled-up 10kW coal-fueled chemical looping combustion facility. This scaled-up evaluation tests (2-day, 8-hour per day) indicated that, there was no tendency of agglomeration of copper-based oxygen carriers. Only trace-amount of coke or carbon deposits on the copper-based oxygen carriers in the fuel reactor. There was also no evidence to show the sulphidization of oxygen carriers in the system by using the high-sulfur-laden asphalt fuels. In all, the scaled-up test in 10 kW CLC facility demonstrated that the preparation method of copper-based oxygen carrier not only help to maintain its good reactivity, also largely minimize its agglomeration tendency.

Pan, Wei-Ping; Cao, Yan

2012-11-30T23:59:59.000Z

400

INVESTIGATING THE COMPLEX X-RAY SPECTRUM OF A BROAD-LINE 2MASS RED QUASAR: XMM-NEWTON OBSERVATION OF FTM 0830+3759  

SciTech Connect (OSTI)

We report results from a 50 ks XMM-Newton observation of the dust-reddened broad-line quasar FTM 0830+3759 (z = 0.413) selected from the Faint Images of the Radio Sky at Twenty cm/Two Micron All Sky Survey red quasar survey. For this active galactic nucleus (AGN), a very short 9 ks Chandra exposure had suggested a feature-rich X-ray spectrum and Hubble Space Telescope images revealed a very disturbed host galaxy morphology. Contrary to classical, optically selected quasars, the X-ray properties of red (i.e., with J - K{sub s} > 1.7 and R - K{sub s} > 4.0) broad-line quasars are still quite unexplored, although there is a growing consensus that, due to moderate obscuration, these objects can offer a unique view of spectral components typically swamped by the AGN light in normal, blue quasars. The XMM-Newton observation discussed here has definitely confirmed the complexity of the X-ray spectrum revealing the presence of a cold (or mildly ionized) absorber with N{sub H} {approx} 10{sup 22} cm{sup -2} along the line of sight to the nucleus and a Compton reflection component accompanied by an intense Fe Kalpha emission line in this quasar with a L{sub 2-10{sub keV}} {approx} 5 x 10{sup 44} erg s{sup -1}. A soft-excess component is also required by the data. The match between the column density derived by our spectral analysis and that expected on the basis of reddening due to the dust suggests the possibility that both absorptions occur in the same medium. FTM 0830+3759 is characterized by an extinction/absorption-corrected X-ray-to-optical flux ratio alpha{sub ox} = -2.3, which is steeper than expected on the basis of its UV luminosity. These findings indicate that the X-ray properties of FTM 0830+3759 differ from those typically observed for optically selected broad-line quasars with comparable hard X-ray luminosity.

Piconcelli, Enrico; Nicastro, Fabrizio; Fiore, Fabrizio [Osservatorio Astronomico di Roma (INAF), Via Frascati 33, I-00040 Monte Porzio Catone, Italy. (Italy); Vignali, Cristian [Dipartimento di Astronomia, Universita di Bologna, Via Ranzani 1, I-40127 Bologna (Italy); Bianchi, Stefano [Dipartimento di Fisica, Universita degli Studi Roma Tre, via della Vasca Navale 84, I-00146 Roma (Italy); Miniutti, Giovanni, E-mail: piconcelli@oa-roma.inaf.i [LAEX, Centro de Astrobiologia (CSIC-INTA) LAEFF, P.O. Box 78, E-28691 Villanueva de la Canada, Madrid (Spain)

2010-02-20T23:59:59.000Z

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401

CLaSPS: A NEW METHODOLOGY FOR KNOWLEDGE EXTRACTION FROM COMPLEX ASTRONOMICAL DATA SETS  

SciTech Connect (OSTI)

In this paper, we present the Clustering-Labels-Score Patterns Spotter (CLaSPS), a new methodology for the determination of correlations among astronomical observables in complex data sets, based on the application of distinct unsupervised clustering techniques. The novelty in CLaSPS is the criterion used for the selection of the optimal clusterings, based on a quantitative measure of the degree of correlation between the cluster memberships and the distribution of a set of observables, the labels, not employed for the clustering. CLaSPS has been primarily developed as a tool to tackle the challenging complexity of the multi-wavelength complex and massive astronomical data sets produced by the federation of the data from modern automated astronomical facilities. In this paper, we discuss the applications of CLaSPS to two simple astronomical data sets, both composed of extragalactic sources with photometric observations at different wavelengths from large area surveys. The first data set, CSC+, is composed of optical quasars spectroscopically selected in the Sloan Digital Sky Survey data, observed in the x-rays by Chandra and with multi-wavelength observations in the near-infrared, optical, and ultraviolet spectral intervals. One of the results of the application of CLaSPS to the CSC+ is the re-identification of a well-known correlation between the {alpha}{sub OX} parameter and the near-ultraviolet color, in a subset of CSC+ sources with relatively small values of the near-ultraviolet colors. The other data set consists of a sample of blazars for which photometric observations in the optical, mid-, and near-infrared are available, complemented for a subset of the sources, by Fermi {gamma}-ray data. The main results of the application of CLaSPS to such data sets have been the discovery of a strong correlation between the multi-wavelength color distribution of blazars and their optical spectral classification in BL Lac objects and flat-spectrum radio quasars, and a peculiar pattern followed by blazars in the WISE mid-infrared colors space. This pattern and its physical interpretation have been discussed in detail in other papers by one of the authors.

D'Abrusco, R.; Fabbiano, G.; Laurino, O. [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States); Djorgovski, G.; Donalek, C.; Longo, G. [Department of Astronomy, California Institute of Technology, MC 249-17 1200 East California Blvd, Pasadena, CA 91125 (United States)

2012-08-20T23:59:59.000Z

402

Summary of research on hydrogen production from fossil fuels conducted at NETL  

SciTech Connect (OSTI)

In this presentation we will summarize the work performed at NETL on the production of hydrogen via partial oxidation/dry reforming of methane and catalytic decomposition of hydrogen sulfide. We have determined that high pressure resulted in greater carbon formation on the reforming catalysts, lower methane and CO2 conversions, as well as a H2/CO ratio. The results also showed that Rh/alumina catalyst is the most resistant toward carbon deposition both at lower and at higher pressures. We studied the catalytic partial oxidation of methane over Ni-MgO solid solutions supported on metal foams and the results showed that the foam-supported catalysts reach near-equilibrium conversions of methane and H2/CO selectivities. The rates of carbon deposition differ greatly among the catalysts, varying from 0.24 mg C/g cat h for the dipped foams to 7.0 mg C/g cat h for the powder-coated foams, suggesting that the exposed Cr on all of the foam samples may interact with the Ni-MgO catalyst to kinetically limit carbon formation. Effects of sulfur poisoning on reforming catalysts were studies and pulse sulfidation of catalyst appeared to be reversible for some of the catalysts but not for all. Under pulse sulfidation conditions, the 0.5%Rh/alumina and NiMg2Ox-1100C (solid solution) catalysts were fully regenerated after reduction with hydrogen. Rh catalyst showed the best overall activity, less carbon deposition, both fresh and when it was exposed to pulses of H2S. Sulfidation under steady state conditions significantly reduced catalyst activity. Decomposition of hydrogen sulfide into hydrogen and sulfur was studied over several supported metal oxides and metal oxide catalysts at a temperature range of 650-850C. H2S conversions and effective activation energies were estimated using Arrhenius plots. The results of these studies will further our understanding of catalytic reactions and may help in developing better and robust catalysts for the production of hydrogen from fossil fuels

Shamsi, Abolghasem

2008-03-30T23:59:59.000Z

403

LOW-RESOLUTION SPECTROSCOPY OF GAMMA-RAY BURST OPTICAL AFTERGLOWS: BIASES IN THE SWIFT SAMPLE AND CHARACTERIZATION OF THE ABSORBERS  

SciTech Connect (OSTI)

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.

Fynbo, J. P. U.; Malesani, D.; Vreeswijk, P. M.; Hjorth, J.; Sollerman, J.; Thoene, C. C. [Dark Cosmology Centre, Niels Bohr Institute, University of Copenhagen, Juliane Maries Vej 30, DK-2100 Copenhagen Oe (Denmark); Jakobsson, P.; Bjoernsson, G.; De Cia, A. [Centre for Astrophysics and Cosmology, Science Institute, University of Iceland, Dunhagi 5, IS-107 ReykjavIk (Iceland); Prochaska, J. X. [Department of Astronomy and Astrophysics, UCO/Lick Observatory, University of California, 1156 High Street, Santa Cruz, CA 95064 (United States); Ledoux, C.; De Ugarte Postigo, A. [European Southern Observatory, Alonso de Cordova 3107, Vitacura, Casilla 19001, Santiago 19 (Chile); Nardini, M. [SISSA, Via Beirut 2/4, I-34014 Trieste (Italy); Wiersema, K. [Department of Physics and Astronomy, University of Leicester, University Road, Leicester, LE1 7RH (United Kingdom); Chen, H.-W. [Department of Astronomy and Astrophysics and Kavli Institute for Cosmological Physics, University of Chicago, Chicago, IL 60637 (United States); Bloom, J. S. [Department of Astronomy, University of California, Berkeley, CA 94720-3411 (United States); Castro-Tirado, A. J.; Gorosabel, J. [IAA-CSIC, P.O. Box 03004, E-18080 Granada (Spain); Christensen, L. [European Southern Observatory, Karl-Schwarzschildstrasse 2, D-85748 Garching (Germany); Fruchter, A. S. [Space Telescope Science Institute, Department of Physics and Astronomy, Johns Hopkins University, 3700 San Martin Drive, Baltimore, MD 21218 (United States)] (and others)

2009-12-01T23:59:59.000Z

404

WATER-GAS SHIFT WITH INTEGRATED HYDROGEN SEPARATION PROCESS  

SciTech Connect (OSTI)

Optimization of the water-gas shift (WGS) reaction system for hydrogen production for fuel cells is of particular interest to the energy industry. To this end, it is desirable to couple the WGS reaction to hydrogen separation using a semi-permeable membrane, with both processes carried out at high temperatures to improve reaction kinetics and permeation. Reduced equilibrium conversion of the WGS reaction at high temperatures is overcome by product H{sub 2} removal via the membrane. This project involves fundamental research and development of novel cerium oxide-based catalysts for the water-gas-shift reaction and the integration of these catalysts with Pd-alloy H{sub 2}-separation membranes supplying high purity hydrogen for fuel cell use. Conditions matching the requirements of coal gasifier-exit gas streams will be examined in the project. The first-year screening studies of WGS catalysts identified Cu-ceria as the most promising high-temperature shift catalyst for integration with H{sub 2}-selective membranes. Formulations containing iron oxide were found to deactivate in the presence of CO{sub 2}, and were thus eliminated from further consideration. Cu-containing ceria catalysts, on the other hand, showed high stability in CO{sub 2}-rich gases. This type gas will be present over much of the catalyst, as the membrane removes the hydrogen produced from the shift reaction. Several catalyst formulations were prepared, characterized and tested in the first year of study. Details from the catalyst development and testing work were given in our first annual technical report. Hydrogen permeation through Pd and Pd-alloy foils was investigated in a small membrane reactor constructed during the first year of the project. The effect of temperature on the hydrogen flux through pure Pd, Pd{sub 60}Cu{sub 40} and Pd{sub 75}Ag{sub 25} alloy membranes, each 25 {micro}m thick, was evaluated in the temperature range from 250 C to 500 C at upstream pressure of 4.4 atm and permeate hydrogen pressure of 1 atm. Flux decay was observed for the Pd-Cu membrane above 500 C. From 350-450 C, an average hydrogen flux value of 0.2 mol H{sub 2}/m{sup 2}/s was measured over this Pd-alloy membrane. These results are in good agreement with literature data. In this year's report, we discuss reaction rate measurements, optimization of catalyst kinetics by proper choice of dopant oxide (lanthana) in ceria, long-term stability studies, and H{sub 2} permeation data collected with unsupported flat, 10 {micro}m-thick Pd-Cu membranes over a wide temperature window and in various gas mixtures. The high-temperature shift catalyst composition was further improved, by proper selection of dopant type and amount. The formulation 10 at%Cu-Ce(30 at%La)Ox was the best; this was selected for further kinetic studies. WGS reaction rates were measured in a simulated coal-gas mixture. The stability of catalyst performance was examined in 40-hr long tests. A series of hydrogen permeation tests were conducted in a small flat-membrane reactor using the 10 m{micro}-thick Pd-Cu membranes. Small inhibitory effects of CO and CO{sub 2} were found at temperatures above 350 C, while H{sub 2}O vapor had no effect on hydrogen permeation. No carbon deposition took place during many hours of membrane operation. The reaction extent on the blank (catalyst-free) membrane was also negligible. A larger flat-membrane reactor will be used next year with the catalyst wash coated on screens close coupled with the Pd-Cu membrane.

Maria Flytzani-Stephanopoulos, PI; Jerry Meldon, Co-PI; Xiaomei Qi

2002-12-01T23:59:59.000Z

405

Laser conditioning study of KDP on the optical sciences laser using large area beams  

SciTech Connect (OSTI)

Considerable attention has been paid over the years to the problem of growing high purity KDP and KD*P to meet threshold requirements on succeeding generations of inertial confinement fusion lasers at LLNL. While damage thresholds for these materials have increased over time, the current National Ignition Facility (NIF) maximum fluence requirement (redline) for KD*P frequency triplers of 14.3 J/cm{sup 2} at 351 nm, 3 ns has not been reached without laser (pre)conditioning. It is reasonable to assume that, despite the rapid increase in damage thresholds for rapidly grown crystals, -a program of large scale conditioning of the 192 NIF triplers will be required. Small area ramp (R/1) tests on single sites indicate that KDP damage thresholds can be raised on average up to 1.5X the unconditioned values. Unpublished LLNL 3{omega} raster conditioning studies on KDP, however, have not conclusively shown that off-line conditioning is feasible for KD*P. Consequently, investigating the feasibility of on-line conditioning of NIF triplers at 3{omega} has become a high priority for the KDP damage group at LLNL. To investigate the feasibility of on-line conditioning we performed a series of experiments using the Optical Sciences Laser (OSL) on numerous samples of conventional and rapid growth KDP and KD*P. The experiment entailed exposing sites on each sample to a range of ramped shot (N/l) sequences starting at average fluences of -2 J/cm{sup 2} (in a 7 mm ``top hat`` beam @ 351 nm, 3 ns) up to peak fluences of approximately 13 J/cm{sup 2}. Test results indicated that the most effective conditioning procedure entailed a 7-8 shot ramp starting at 2 J/cm{sup 2} and ending at 12-13 J/cm{sup 2}. The pinpoint onset fluence for the 8/1 tests was 1.4 times that of the unconditioned site. Damage evolution appears to be exponential as a function of increasing fluence. When damage occurs after conditioning however, pinpoint density evolution exhibits a greater slope than less conditioned sites. The overall reduction in the total pinpoint number can be as high as 30OX. Despite laser conditioning , the pinpoint onset for the samples considered is below the NIF redline fluence of 14.3 J/cm{sup 2}. In addition, the exponential pinpoint evolution curves indicate that damage levels at NIF redline fluences will be on the order of 10{sup 4} pinpoints/mm{sup 2}. This suggests that there will be significant damage in NIP triplers, however, substantial damage has not been observed in the large Beamlet tripler (conventionally grown KD*P) under similar exposure conditions. By applying the OSL damage evolution curves to model NIF THG output spatial profiles it is possible to show damage in NIF triplers will be slight, consisting of isolated clusters with a few pinpoints at high fluence portions of the beam. This prediction has been verified by scatter mapping the 37 cm Beamlet tripler crystal. These results will be discussed in a future memo. These results indicate the feasibility of on-line conditioning for the NIF laser.

Runkel, M.; DeYoreo, J.; Sell, W.; Milam, D.

1997-12-20T23:59:59.000Z

406

The Integration of a Structural Water Gas Shift Catalyst with a Vanadium Alloy Hydrogen Transport Device  

SciTech Connect (OSTI)

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

Barton, Thomas; Argyle, Morris; Popa, Tiberiu

2009-06-30T23:59:59.000Z