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1

Enhancement of magnetoresistance using CoFe/Ru/CoFe synthetic ferrimagnetic pinned layer in BiFeO{sub 3} based spin-valves  

SciTech Connect

SrTiO{sub 3} (100) sub/BiFeO{sub 3}/CoFe/Ru/CoFe/Cu/CoFe/Ta structure was prepared by a combination of chemical solution deposition and sputtering method, and followed by a systematical investigation for the structural, magnetic and magnetoresistance properties at room temperature (RT) as a function of CoFe and Ru thicknesses. It was revealed that introduction of synthetic CoFe/Ru/CoFe as a pinning layer increased the giant magentoresistance (MR) ratio to 8.3% at RT. This enhancement of MR ratio might be attributed to (i) the increase of pinning field, and (ii) suppression of the influence of the surface roughness of BiFeO{sub 3} by inserting the synthetic CoFe/Ru/CoFe layer.

Naganuma, Hiroshi; Kubota, Miho; Inami, Nobuhito; Kawada, Yuki; Oogane, Mikihiko; Ando, Yasuo [Department of Applied Physics, Graduate School of Engineering, Tohoku University, 6-6-05 Aoba Aramaki Aoba-ku, Sendai 980-8579 (Japan); Bae, In-Tae [Small Scale Systems Integration and Packaging Center, State University of New York at Binghamton, Binghamton, New York 13902 (United States); Miyazaki, Takamichi [Tohoku University, Department of Instrumental Analysis, 6-6-11 Aoba, Aramaki, Aoba, Sendai 980-8579 (Japan); Mizukami, Shigemi [WPI Advanced Institute for Materials Research, Tohoku University, Katahira 2-1-1, Aoba-ku, Sendai 980-8577 (Japan); Han, X. F. [Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190 (China)

2012-08-13T23:59:59.000Z

2

Spin-torque diode spectrum of ferromagnetically coupled (FeB/CoFe)/Ru/(CoFe/FeB) synthetic free layer  

SciTech Connect

We investigated systematically the spin torque diode spectrum of a ferromagnetically coupled (FeB/CoFe)/Ru/(CoFe/FeB) synthetic free layer in an MgO-based magnetic tunnel junction. In the spectra, we observed single peaks shifted to higher frequency with increasing the in-plane magnetic fields, as expected from the ferromagnetic resonance of the FeB/CoFe adjacent to the MgO tunnel barrier. On the other hand, under the perpendicular fields, we observed several peaks below 6 GHz and around 10 GHz, which were rather insensitive to the field. These behaviors are different from our simple calculation taking account the interlayer coupling, suggesting that the excitation of magnetizations occurs in a complicated manner for the synthetic free layers.

Bang, Do; Taniguchi, Tomohiro; Kubota, Hitoshi; Yorozu, Takehiko; Imamura, Hiroshi; Yakushiji, Kay; Fukushima, Akio; Yuasa, Shinji; Ando, Koji [National Institute of Advanced Industrial Science and Technology (AIST), Central 2, Umezono 1-1-1, Tsukuba, Ibaraki 305-8568 (Japan)

2012-04-01T23:59:59.000Z

3

What Controls the Phase Diagram and Superconductivity in Ru-Substituted BaFe2As2?  

SciTech Connect

We use high resolution angle-resolved photoemission to study the electronic structure of the iron based high-temperature superconductors Ba(Fe{sub 1-x}Ru{sub x}){sub 2}As{sub 2} as a function of Ru concentration. We find that substitution of Ru for Fe is isoelectronic, i.e., it does not change the value of the chemical potential. More interestingly, there are no measured, significant changes in the shape of the Fermi surface or in the Fermi velocity over a wide range of substitution levels (0 < x < 0.55). Given that the suppression of the antiferromagnetic and structural phase is associated with the emergence of the superconducting state, Ru substitution must achieve this via a mechanism that does not involve changes of the Fermi surface. We speculate that this mechanism relies on magnetic dilution which leads to the reduction of the effective Stoner enhancement.

Dhaka, R. S.; Liu, Chang; Fernandes, R.M.; Jiang, Riu; Strehlow, C.P.; Kondo, Takeshi; Thaler, A.; Schmalian, Joerg; Bud-ko, S.J.; Canfield, P.C.; Kaminski, A.

2011-12-23T23:59:59.000Z

4

Frustration by competing interactions in the highly-distorted double perovskites La2NaB'O6 (B' = Ru, Os)  

Science Conference Proceedings (OSTI)

The usual classical behaviour of S = 3/2, B-site ordered double perovskites generally results in simple, commensurate magnetic ground states. In contrast, heat capacity and neutron powder diffraction measurements for the S = 3/2 systems La2NaB'O6 (B = Ru, Os) reveal an incommensurate magnetic ground state for La2NaRuO6 and a drastically suppressed ordered moment for La2NaOsO6. This behaviour is attributed to the large monoclinic structural distortions of these double perovskites. The distortions have the effect of weakening the nearest neighbour superexchange interactions, presumably to an energy scale that is comparable to the next nearest neighbour superexchange. The exotic ground states in these materials can then arise from a competition between these two types of antiferromagnetic interactions, providing a novel mechanism for achieving frustration in the double perovskite family.

Aczel, Adam A [ORNL; Bugaris, Dan [University of South Carolina; Li, Ling [University of Tennessee, Knoxville (UTK); Yan, Jiaqiang [ORNL; Dela Cruz, Clarina R [ORNL; Zur Loye, Hans-Conrad [University of South Carolina; Nagler, Stephen E [ORNL

2013-01-01T23:59:59.000Z

5

Microstructure and ordering parameter studies in multilayer [FePt(x)/Os]{sub n} films  

SciTech Connect

The microstructure, ordering parameter, and magnetic properties of multilayer [FePt(x)/Os]{sub n} films on glass substrate by dc-magnetron sputtering (with x being thickness in nm; Os with a fixed thickness 5 nm; n being the number of layers) have been studied as a function of the annealing temperatures between 300 and 900 deg. C. The grain size of multilayer films can be controlled by annealing temperature and thickness of the FePt layer with Os space layer. The coercivity as a function of the annealing temperature for samples with n = 1 and pure FePt behaves roughly saturated after annealing above 700 deg. C. However, for samples with n > 4 the value of H{sub c} seems still increasing with increasing annealing temperature between 600 and 900 deg. C, and the ordering parameter decreases with increasing the number of Os layers. Our experimental results are reasonably well to describe the effect of strain-assisted transformation.

Chiang, D. P. [Division of Natural Science, Ming Hsin University of Sci. and Techn., Hsinchu 304, Taiwan (China); Department of Materials Engineering, Tatung University, Taipei 104, Taiwan (China); Chen, S. Y.; Chen, Y. Y. [Institute of Physics, Academia Sinica, Taipei 115, Taiwan (China); Yao, Y. D. [Institute of Applied Science and Engineering, Fu Jen University, Taipei 242, Taiwan (China); Ouyang, H. [Department of Materials Sci. and Engn., Tsing Hua University, Hsinchu 300, Taiwan (China); Yu, C. C. [Department of Applied Physics, National University of Kaohsiung, Kaohsiung 811, Taiwan (China); Lin, H. M. [Department of Materials Engineering, Tatung University, Taipei 104, Taiwan (China)

2011-04-01T23:59:59.000Z

6

Structural and physical properties of layered oxy-arsenides LnRuAsO (Ln=La, Nd, Sm, Gd)  

Science Conference Proceedings (OSTI)

Polycrystalline samples of LaRuAsO, NdRuAsO, SmRuAsO, and GdRuAsO have been synthesized and studied using powder x-ray diffraction, electrical transport, magnetization, and heat capacity measurements. Variations in structural properties across the series reveal a trend toward more ideal tetrahedral coordination around Ru as the size of the rare earth element is reduced. The lattice parameters of these Ru compounds show a more anisotropic response to variation in Ln than their Fe analogs, and significant anisotropy in thermal expansion is also observed. Transport measurements show metallic behavior, and carrier concentrations near 10{sup 21}-10{sup 22} electrons per cm{sup 3} are inferred from simple analysis of Hall effect measurements. Anomalies in resistivity, magnetization, and heat capacity indicate antiferromagnetic ordering of rare earth moments at 5 K for GdRuAsO, 4.5 K for SmRuAsO, and heat capacity of LaRuAsO, NdRuAsO, SmRuAsO, and GdRuAsO. Highlights: Black-Right-Pointing-Pointer Experimental investigation of LaRuAsO, NdRuAsO, SmRuAsO, and GdRuAsO. Black-Right-Pointing-Pointer Anisotropic lattice response to changing Ln radius and temperature. Black-Right-Pointing-Pointer Ru coordination becomes more ideal as Ln radius is reduced. Black-Right-Pointing-Pointer Transport measurements reveal metallic conduction dominated by electrons. Black-Right-Pointing-Pointer Magnetic measurements indicate antiferromagnetic ordering Nd, Sm, and Gd moments.

McGuire, Michael A., E-mail: McGuireMA@ornl.gov [Oak Ridge National Laboratory, Oak Ridge, TN 37831 (United States); May, Andrew F.; Sales, Brian C. [Oak Ridge National Laboratory, Oak Ridge, TN 37831 (United States)

2012-07-15T23:59:59.000Z

7

Crystallographic and magnetic phase transitions in the layered ruthenium oxy-arsenides TbRuAsO and DyRuAsO  

Science Conference Proceedings (OSTI)

The crystallographic and physical properties of TbRuAsO and DyRuAsO at and below room temperature are reported, including full structure refinements from powder X-ray diffraction data and measured electrical and thermal transport properties, magnetic susceptibility, and heat capacity. Both compounds are isostructural to LaFeAsO (ZrCuSiAs-type, P4/nmm) at room temperature. However, DyRuAsO undergoes a symmetry-lowering crystallographic phase transition near 25 K, and adopts an orthorhombic structure (Pmmn) below this temperature. This structural distortion is unlike those observed in the analogous Fe compounds. Magnetic phase transitions are observed in both compounds which suggest antiferromagnetic ordering of lanthanide moments occurs near 7.0 K in TbRuAsO and 10.5 K in DyRuAsO. The nature of the structural distortion as well as thermal conductivity and heat capacity behaviors indicate strong coupling between the magnetism and the lattice. The behaviors of both materials show magnetic ordering of small moments on Ru may occur at low temperatures.

McGuire, Michael A [ORNL; May, Andrew F [ORNL; Sales, Brian C [ORNL

2012-01-01T23:59:59.000Z

8

ZeptoOS // Documentation  

NLE Websites -- All DOE Office Websites (Extended Search)

Documentation Visit the ZeptoOS Documentation Wiki for a complete ZeptoOS documentation, including a list of features, requirements, limitations, and changes from previous...

9

ZeptoOS  

NLE Websites -- All DOE Office Websites (Extended Search)

Overview ZeptoOS logo ZeptoOS is a research project studying operating systems for petascale architectures with 10,000 to 1 million CPUs. Operating systems and run-time software...

10

ZeptoOS // Downloads  

NLE Websites -- All DOE Office Websites (Extended Search)

Downloads ZeptoOS Version 2.0 Release Name Size ZeptoOS-2.0-V1R3M0.tar.bz2 155M ZeptoOS-2.0-V1R3M0.tar.bz2.md5sum.txt 61 ZeptoOS-2.0-V1R3M0.tar.bz2.sha1sum.txt 69 Selfish Detour...

11

ZeptoOS // Links  

NLE Websites -- All DOE Office Websites (Extended Search)

Links ZeptoOS-specific resources: Subversion repository Kernel GIT repository Bug tracking system Blue Gene resources: ALCF: Argonne Leadership Computing Facility Blue Gene...

12

Graphene Growth by Metal Etching on Ru (0001)  

E-Print Network (OSTI)

of step etching during graphene growth, such as in Fig. 3,adsorption of water on graphene structures will be describedRu(0001) Figure 5. a b c graphene Ru d Figure 6. Figure 7. a

Loginova, Elena

2010-01-01T23:59:59.000Z

13

Project RU LlSON COPY ON-SITE RADIOLOGICAL PROGRAMS DURING REENTRY DISILLING THROUGH PRODUCTION TESTING  

Office of Legacy Management (LM)

RU LlSON RU LlSON COPY ON-SITE RADIOLOGICAL PROGRAMS DURING REENTRY DISILLING THROUGH PRODUCTION TESTING FINAL REPOAT EBERLlNE INSTRUMENT CORPORATION Santa Fe, New Mexico Date Published - December 1973 PREPARED FOR THE U. S. ATOMIC ENERGY COMMISSION N E V A D A OPERATIONS OFFICE UNDER CONTRACT NO. AT(26-11-294 DISCLAIMER Portions of this document may be illegible in electronic image products. Images are produced from the best available original document. Project RULISON ON-S1l'E RADIOLOGICAL PROGRAMS D U R I N G R E E N T R Y D R I L L I N G THROUGH PRODUCTION TESTING \ F I N A L REPORT EBERLINE INSTRUMENT CORPORATION . Santa Fe, New Mexico 1 Date Published - December 1973 NEVADA OPERATIONS OFFICE . UNDER CONTRACT NO. AT(26-11-294 NOTICE ~~~~ This report was prepared as an account of work sponsored by the United

14

Exchange bias of spin valve structure with a top-pinned Co{sub 40}Fe{sub 40}B{sub 20}/IrMn  

SciTech Connect

We have investigated the exchange bias of a directly top-pinned Co{sub 40}Fe{sub 40}B{sub 20}/IrMn structure. An exchange bias was realized on the as-deposited samples, in which Co{sub 40}Fe{sub 40}B{sub 20} exhibits a fully amorphous structure. A current-in-plane giant magnetoresistance effect was demonstrated on simple Ru/CoFeB/Cu/CoFeB/IrMn/Ru stacks prior to and after annealing. The amorphous CoFeB layer partially crystallized from the interface with a Cu spacer layer after annealed at 280 deg. C.

You, C. Y.; Furubayashi, T.; Takahashi, Y. K. [National Institute for Materials Science, 1-2-1 Sengen, Tsukuba 305-0047 (Japan); Goripati, H. S. [Graduate School of Pure and Applied Sciences, University of Tsukuba, Tsukuba 305-8571 Japan (Japan); Hono, K. [National Institute for Materials Science, 1-2-1 Sengen, Tsukuba 305-0047 (Japan); Graduate School of Pure and Applied Sciences, University of Tsukuba, Tsukuba 305-8571 (Japan)

2008-07-07T23:59:59.000Z

15

Graphene on Ru(0001): Evidence for two graphene band structures  

Science Conference Proceedings (OSTI)

High-resolution photoemission illustrates that the band structure of graphene on Ru(0001) exhibits a well-defined splitting. This splitting is largest with the graphene directly on the Ru(0001) substrate, whereas with a chemisorbed oxygen spacer layer between the graphene and the metal substrate, this splitting is considerably reduced. This splitting is attributed to a combination of chemical interactions between graphene and Ru(0001) and to screening of the former by the latter, not spin-orbit coupling.

Katsiev K.; Vescovo E.; Losovyj, Y.; Zhou, Z.; Liu, L.; Dowben, P.A.; Goodman, D.W.

2012-05-03T23:59:59.000Z

16

Graphene on Ru(0001): Evidence for two graphene band structures  

Science Conference Proceedings (OSTI)

High-resolution photoemission illustrates that the band structure of graphene on Ru(0001) exhibits a well-defined splitting. This splitting is largest with the graphene directly on the Ru(0001) substrate, whereas with a chemisorbed oxygen spacer layer between the graphene and the metal substrate, this splitting is considerably reduced. This splitting is attributed to a combination of chemical interactions between graphene and Ru(0001) and to screening of the former by the latter, not spin-orbit coupling.

Katsiev, Khabibulakh; Losovyj, Yaroslav; Zhou, Zihao; Vescovo, E; Liu, L.; Dowben, P. A.; Goodman, D. Wayne

2012-01-01T23:59:59.000Z

17

Segregation of Ru to Edge Dislocations in Uranium Dioxide  

Science Conference Proceedings (OSTI)

Presentation Title, Segregation of Ru to Edge Dislocations in Uranium Dioxide. Author(s), Anuj Goyal, Bowen Deng, Minki Hong, Aleksandr Chernatynskiy, ...

18

Graphene Growth by Metal Etching on Ru (0001)  

Science Conference Proceedings (OSTI)

Low-energy electron microscopy (LEEM) reveals a new mode of graphene growth on Ru(0001) in which Ru atoms from a step edge are injected under a growing graphene sheet. The injected atoms can form under-graphene islands, or incorporate into the topmost Ru layer, thereby increasing its density and forming dislocation networks. Density functional calculations imply that Ru islands nucleated between the graphene layer and the substrate are energetically stable; scanning tunneling microscopy (STM) reveals that dislocation networks exist near step edges.

Loginova, Elena; Maier, Sabine; Stass, Ingeborg; Bartelt, Norman; Feibelman, Peter; Salmeron, Miquel; McCarty, Kevin

2009-09-14T23:59:59.000Z

19

Methanol oxidation on PtRu electrodes. Influence of surface structure and Pt-Ru atom distribution  

Science Conference Proceedings (OSTI)

The activities of different types of PtRu catalysts for methanol oxidation are compared. Materials used were: UHV-cleaned PtRu alloys, UHV-evaporated Ru onto Pt(111) as well as adsorbed Ru on Pt(111) prepared with and without additional reduction by hydrogen. Differences in the catalytic activity are observed to depend on the preparation procedure of the catalysts. The dependence of the respective catalytic activities upon the surface composition is reported. UHV-STM data for Pt(111)/Ru show the formation of two- and three-dimensional structures depending on surface coverage. A molecular insight on the electrochemical reaction is given via in situ infrared spectroscopy. Analysis of the data indicates that the most probable rate-determining step is the reaction of adsorbed CO with Ru oxide.

Iwasita, T.; Hoster, H.; John-Anacker, A.; Lin, W.F.; Vielstich, W.

2000-01-25T23:59:59.000Z

20

ZeptoOS // Contact Us  

NLE Websites -- All DOE Office Websites (Extended Search)

Contact Us Project Management The ZeptoOS project makes use of the Trac system. Contact Information Thank you for your interest in this project. We are always looking forward to...

Note: This page contains sample records for the topic "fe ru os" 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

Up-Hill ET in (NH3)5Ru(III)-Modified Ferrocytochrome c  

NLE Websites -- All DOE Office Websites (Extended Search)

Up-Hill Electron Transfer in Pentaammineruthenium(III)-Modified Up-Hill Electron Transfer in Pentaammineruthenium(III)-Modified Ferrocytochrome c: Rates, Thermodynamics, and the Mediating Role of the Ruthenium Moiety Ji Sun, James F. Wishart, and Stephan S. Isied Inorg. Chem. 34, 3998-4000 (1995) Abstract: At moderate to high ionic strengths (>0.1 M), Co(oxalate)33- oxidizes native cytochrome c very slowly, however it undergoes a rapid reaction with pendant ruthenium complexes covalently attached to the surface of the protein. Under these conditions, the rate of the thermodynamically unfavorable (up-hill) FeII-to-RuIII electron transfer process in pentaammineruthenium-modified horse-heart cytochrome c can be revealed using sufficiently high Co(oxalate) 33- concentrations. Rate measurements performed over a wide range of CoIII concentrations confirm the proposed

22

Time-Resolved FT-IR Spectroscopy of CO Hydrogenation over Supported Ru Catalyst at 700K  

E-Print Network (OSTI)

H. In-Situ Spectroscopy of Catalysts 2004, 32-46. Basu, P. ;over Supported Ru Catalyst at 700 K Walter Wasylenko andAl 2 O 3 -supported, Ru catalyst (Aldrich, 5% Ru, Degussa

Wasylenko, Walter; Frei, Heinz

2008-01-01T23:59:59.000Z

23

Stopping the growth of particles to silica-supported mono-nuclear Ru hydride surface species by tuning silica with surface silanes  

E-Print Network (OSTI)

chemical grafting of Ru(COD)(COT) through a covalent Ru-Siof a pentane solution of Ru(COD)(COT) under 3 bars of H 2 inhigh temperatures of grafted Ru(COD)(COT), leading to stable

Berthoud, Romain

2009-01-01T23:59:59.000Z

24

High Pressure Pulse Radiolysis-Reduction Cyt c by Ru(II) Complexes  

NLE Websites -- All DOE Office Websites (Extended Search)

The DV values for intramolecular electron transfer in (NH3)5RuII-His33 horse heart ferricytochrome c and (NH3)5RuII-His39 Candida krusei ferricytochrome c are -17.7 ...

25

Surface?modified RuO2?based thick film resistors using Nd:YAG laser  

Science Conference Proceedings (OSTI)

An RuO2?based thick film resistor (TFR) is a cermet?type resistor which consists of RuO2 particles and glass. Paste containing organic vehicles is printed onto an insulating substrate

E. Gofuku; T. Ogama; H. Takasago

1989-01-01T23:59:59.000Z

26

Complex of transferrin with ruthenium for medical applications. [Ru 97, Ru 103  

DOE Patents (OSTI)

A novel Ruthenium-transferrin complex, prepared by reacting iron-free human transferrin dissolved in a sodium acetate solution at pH 7 with ruthenium by heating at about 40/sup 0/C for about 2 hours, and purifying said complex by means of gel chromatography with pH 7 sodium acetate as eluent. The mono- or di-metal complex produced can be used in nuclear medicine in the diagnosis and/or treatment of tumors and abscesses. Comparitive results with Ga-67-citrate, which is the most widely used tumor-localizing agent in nuclear medicine, indicate increased sensitivity of detection and greater tumor uptake with the Ru-transferrin complex.

Richards, P.; Srivastava, S.C.; Meinken, G.E.

1980-11-03T23:59:59.000Z

27

PtRu/C electrocatalysts prepared using gamma and electron beam irradiation for methanol electrooxidation  

Science Conference Proceedings (OSTI)

PtRu/C electrocatalysts (carbon-supported PtRu nanoparticles) were prepared in a single step submitting water/2-propanol mixtures containing Pt(IV) and Ru(III) ions and the carbon support to gamma and electron beam irradiation. The electrocatalysts were ...

Dionisio F. Silva, Adriana N. Geraldes, Eddy S. Pino, Almir Oliveira Neto, Marcelo Linardi, Estevam V. Spinacé

2012-01-01T23:59:59.000Z

28

Design and Application of RuBee-Based Telemedicine Data Acquisition System  

Science Conference Proceedings (OSTI)

Telemedicine can be defined as the delivery of health care and sharing of medical knowledge over a distance using telecommunication. This paper introduced the new technology of RuBee, RuBee fills the drawback of RFID tags which have no network and cannot ... Keywords: RuBee, Telemedicine system, electronic patient record, emergency telemedicine

Xiaohua Yu; Xiangling Xia; Xuhui Chen

2011-05-01T23:59:59.000Z

29

Verifying security invariants in ExpressOS  

Science Conference Proceedings (OSTI)

Security for applications running on mobile devices is important. In this paper we present ExpressOS, a new OS for enabling high-assurance applications to run on commodity mobile devices securely. Our main contributions are a new OS architecture and ... Keywords: automatic theorem proving, microkernel, mobile security, programming by con- tracts

Haohui Mai; Edgar Pek; Hui Xue; Samuel Talmadge King; Parthasarathy Madhusudan

2013-04-01T23:59:59.000Z

30

Structure and Electrocatalysis of Sputtered RuPt Thin-film Electrodes  

DOE Green Energy (OSTI)

The structural and electrochemical properties of RuPt thin-film electrodes fabricated by RF magnetron sputtering have been investigated. Grazing incidence X-ray diffraction data show a transition from a face-centered-cubic (fcc) to hexagonal-cubic-packed (hcp) structure as Ru percentage increases. The transition occurs gradually between 32-58% Ru, which is significantly different from the bulk RuPt phase diagram. The catalytic activity of the thin-film electrodes for methanol oxidation shows a broad peak near 40-60% Ru, consistent with previous reports. The relationship between catalytic activity and film structure is discussed and contrasted with previous investigations.

Kim, T-W

2005-02-02T23:59:59.000Z

31

The interactions of water and perfluorodiethyl ether on Ru(100)  

DOE Green Energy (OSTI)

We have studied the interactions of water and perfluorodiethyl ether on Ru(100) in order to model the effects of surface structure and humidity on the bonding and decomposition of perfluoroalkyl ether lubricants with metal surfaces. In order to understand the interactions on Ru(100), we have first investigated the interactions of each of these adsorbates alone on the clean surface. The interactions of water with Ru(100) have been studied using both thermal desorption spectroscopy (TDS) and electron energy loss spectroscopy (EELS). From these studies we conclude that a small amount of water dissociates on this surface (5--10% of a monolayer), but water is adsorbed in a predominantly molecular form on this surface with an increasing degree of hydrogen-bonding with increasing coverage. The effects of hydrogen and oxygen coadsorption on the interactions of water with this surface have also been studied using TDS. Finally, the interactions of coadsorbed water and perfluorodiethyl ether on Ru(100) have been investigated using TDS.

Leavitt, P.

1990-09-21T23:59:59.000Z

32

Carbon-Supported bimetallic Pd-Fe catalysts for vapor-phase hydrodeoxygenation of guaiacol  

Science Conference Proceedings (OSTI)

Abstract Carbon supported metal catalysts (Cu/C, Fe/C, Pd/C, Pt/C, PdFe/C and Ru/C) have been prepared, characterized and tested for vapor-phase hydrodeoxygenation (HDO) of guaiacol (GUA) at atmospheric pressure. Phenol was the major intermediate on all catalysts. Over the noble metal catalysts saturation of the aromatic ring was the major pathway observed at low temperature (250 °C), forming predominantly cyclohexanone and cyclohexanol. Substantial ring opening reaction was observed on Pt/C and Ru/C at higher reaction temperatures (e.g., 350 °C). Base metal catalysts, especially Fe/C, were found to exhibit high HDO activity without ring-saturation or ring-opening with the main products being benzene, phenol along with small amounts of cresol, toluene and trimethylbenzene (TMB). A substantial enhancement in HDO activity was observed on the PdFe/C catalysts. Compared with Fe/C, the yield to oxygen-free aromatic products (i.e., benzene/toluene/TMB) on PdFe/C increased by a factor of four at 350 °C, and by approximately a factor of two (83.2% versus 43.3%) at 450 °C. The enhanced activity of PdFe/C is attributed to the formation of PdFe alloy as evidenced by STEM, EDS and TPR.

Sun, Junming; Karim, Ayman M.; Zhang, He; Kovarik, Libor; Li, Xiaohong S.; Hensley, Alyssa; McEwen, Jean-Sabin; Wang, Yong

2013-10-01T23:59:59.000Z

33

FE Blog  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

blog Office of Fossil Energy Forrestal Building 1000 blog Office of Fossil Energy Forrestal Building 1000 Independence Avenue, SW Washington, DC 20585202-586-6503 en Alert! Industry and Academia - The Energy Department Seeks Your Novel Ideas for Advanced Energy Systems http://energy.gov/fe/articles/alert-industry-and-academia-energy-department-seeks-your-novel-ideas-advanced-energy fe/articles/alert-industry-and-academia-energy-department-seeks-your-novel-ideas-advanced-energy" class="title-link">Alert! Industry and Academia - The Energy Department Seeks Your Novel Ideas for Advanced Energy Systems

34

Mac OS X Installation Notes for EXPGUI  

Science Conference Proceedings (OSTI)

... of the following steps: On the finder window for the ... Proceed through the windows by pressing Continue (note ... Mac OS X books that cover this subject ...

35

{sup 45}Sc Solid State NMR studies of the silicides ScTSi (T=Co, Ni, Cu, Ru, Rh, Pd, Ir, Pt)  

SciTech Connect

The silicides ScTSi (T=Fe, Co, Ni, Cu, Ru, Rh, Pd, Ir, Pt) were synthesized by arc-melting and characterized by X-ray powder diffraction. The structures of ScCoSi, ScRuSi, ScPdSi, and ScIrSi were refined from single crystal diffractometer data. These silicides crystallize with the TiNiSi type, space group Pnma. No systematic influences of the {sup 45}Sc isotropic magnetic shift and nuclear electric quadrupolar coupling parameters on various structural distortion parameters calculated from the crystal structure data can be detected. {sup 45}Sc MAS-NMR data suggest systematic trends in the local electronic structure probed by the scandium atoms: both the electric field gradients and the isotropic magnetic shifts relative to a 0.2 M aqueous Sc(NO{sub 3}){sub 3} solution decrease with increasing valence electron concentration and within each T group the isotropic magnetic shift decreases monotonically with increasing atomic number. The {sup 45}Sc nuclear electric quadrupolar coupling constants are generally well reproduced by quantum mechanical electric field gradient calculations using the WIEN2k code. Highlights: Black-Right-Pointing-Pointer Arc-melting synthesis of silicides ScTSi. Black-Right-Pointing-Pointer Single crystal X-ray data of ScCoSi, ScRuSi, ScPdSi, and ScIrSi. Black-Right-Pointing-Pointer {sup 45}Sc solid state NMR of silicides ScTSi.

Harmening, Thomas [Institut fuer Anorganische und Analytische Chemie and NRW Graduate School of Chemistry, Universitaet Muenster, Corrensstrasse 30, D-48149 Muenster (Germany); Eckert, Hellmut, E-mail: eckerth@uni-muenster.de [Institut fuer Physikalische Chemie, Universitaet Muenster, Corrensstrasse 30, D-48149 Muenster (Germany); Fehse, Constanze M. [Institut fuer Physikalische Chemie, Universitaet Muenster, Corrensstrasse 30, D-48149 Muenster (Germany); Sebastian, C. Peter, E-mail: sebastiancp@jncasr.ac.in [New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore 560064 (India); Poettgen, Rainer, E-mail: pottgen@uni-muenster.de [Institut fuer Anorganische und Analytische Chemie and NRW Graduate School of Chemistry, Universitaet Muenster, Corrensstrasse 30, D-48149 Muenster (Germany)

2011-12-15T23:59:59.000Z

36

Optimized code restructuring of OS/2 executables  

Science Conference Proceedings (OSTI)

This paper describes the design and algorithms of FDPR/2 (Feedback Directed Program Restructuring of OS/2 executables), a general-purpose tool that can be used to instrument, profile, and restructure/optimize OS/2 executables for the tel x86 architecture. ...

Jyh-Herng Chow; Yong-fong Lee; Kalyan Muthukumar; Vivek Sarkar; Mauricio Serrano; Iris Garcia; John Hsu; Shauchi Ong; Honesty Young

1995-11-01T23:59:59.000Z

37

Synthesis of Ru/multiwalled carbon nanotubes by microemulsion for electrochemical supercapacitor  

Science Conference Proceedings (OSTI)

An efficient way to decorate multiwalled carbon nanotubes with Ru had been developed. In this method, Ru nanoparticles were prepared by water-in-oil reverse microemulsion, and the produced Ru anchored on MWCNTs. Transmission electron microscopy (TEM) result showed that RuO{sub 2} nanoparticles had the uniform size distribution after electrochemical oxidation. Energy dispersive X-rays (EDX) spectra elucidated the presence of ruthenium oxide in the as-prepared composites after electrochemical oxidation. Cyclic voltammetry result demonstrated that a specific capacitance of deposited ruthenium oxide electrode was significantly greater than that of the pristine MWCNTs electrode in the same medium.

Yan Shancheng; Qu Peng; Wang Haitao; Tian Tian [State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Si Pai Lou 2, Nanjing 210096 (China); Xiao Zhongdang [State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Si Pai Lou 2, Nanjing 210096 (China)], E-mail: zdxiao@seu.edu.cn

2008-10-02T23:59:59.000Z

38

A tentative classification of the bya ru can kings of Zhang zhung  

E-Print Network (OSTI)

grags text 1 p. 22 lines 4-5). They comprised a white turban pierced with eagle feathers, and skins of white lynx, white wolf and stag gzig gung gsum (“tiger, leopard and another kind of wild cat”). Tibetan Studies in honor of Samten Karmay 390 le... wore a radiant jewelled bya ru (rin chen ’od kyi bya ru), another one emitting a rainbow radiance (gzha’ tshon ’od kyi bya ru), and the third a crown made of mother- of-pearl (un chen dung gis bya ru—un chen seemingly refers to a kind of mother...

Vitali, Roberto

2008-01-01T23:59:59.000Z

39

Oxygen adsorption on the Ru(10¯10) surface: Anomalous coverage dependence  

E-Print Network (OSTI)

Oxygen adsorption onto Ru(10¯10) results in the formation of two ordered overlayers, i.e. a c(2×4)-2O and a (2×1)pg-2O phase, which were analyzed by low-energy electron diffraction (LEED) and density functional theory (DFT) calculation. In addition, the vibrational properties of these overlayers were studied by high-resolution electron loss spectroscopy. In both phases, oxygen occupies the threefold coordinated hcp site along the densely packed rows on an otherwise unreconstructed surface, i.e. the O atoms are attached to two atoms in the first Ru layer Ru(1) and to one Ru atom in the second layer Ru(2), forming zigzag chains along the troughs. While in the low-coverage c(2×4)-O phase, the bond lengths of O to Ru(1) and Ru(2) are 2.08 ?A and 2.03 ?A, respectively, corresponding bond lengths in the high-coverage (2×1)-2O phase are 2.01 ?A and 2.04 ?A(LEED). Although the adsorption energy decreases by 220 meV with O coverage (DFT calculations), we observe experimentally a shortening of the Ru(1)-O bond length with O coverage. This effect could not be reconciled with the present DFT-GGA calculations. The ?(Ru-O) stretch mode is found at 67 meV [c(2×4)-2O] and 64 meV [(2×1)pg-2O]. I.

S. Schwegmann; A. P. Seitsonen; V. De Renzi; H. Dietrich; H. Bludau; M. Gierer; H. Over; K. Jacobi; M. Scheffler; G. Ertl

1997-01-01T23:59:59.000Z

40

OsComp Systems | Open Energy Information  

Open Energy Info (EERE)

OsComp Systems OsComp Systems Jump to: navigation, search Logo: OsComp Systems Name OsComp Systems Address 337 Summer St. Place Boston, Massachusetts Zip 02210 Sector Efficiency Product Compression technology Year founded 2010 Number of employees 1-10 Coordinates 42.3491263°, -71.0481592° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":42.3491263,"lon":-71.0481592,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

Note: This page contains sample records for the topic "fe ru os" 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

Mac OS X Installation Notes for EXPGUI  

Science Conference Proceedings (OSTI)

... The Tcl/Tk Starkit. ... Thanks to Paul Kienzle of the NCNR DAVE project for providing the "all in one file" (starkit) version of Tcl/Tk for OS X. ...

42

A formally verified OS kernel. now what?  

Science Conference Proceedings (OSTI)

Last year, the L4.verified project produced a formal, machine-checked Isabelle/HOL proof that the C code of the seL4 OS microkernel correctly implements its abstract implementation. In my presentation I will summarise the proof together with its main ...

Gerwin Klein

2010-07-01T23:59:59.000Z

43

Intramolecular ET in Ru-Modified MnCyt c  

NLE Websites -- All DOE Office Websites (Extended Search)

Tetraammine(L)ruthenium(III)-Modified Tetraammine(L)ruthenium(III)-Modified Manganocytochromes c Ji Sun and James F. Wishart Inorg. Chem. 37, 1124-1126 (1998) [Find paper at ACS Publications] or use ACS Articles on Request Abstract: Manganese-substituted horse heart cytochrome c was prepared by replacing the iron in the heme group according to established methods. The resulting manganicytochrome c was subsequently modified at histidine-33 with three ruthenium complexes trans-(NH3)4(L)Ru-His33, where L = NH3, pyridine or isonicotinamide. Proof of correct derivatization was obtained by atomic absorption analysis of manganese and ruthenium, differential pulse voltammetry and electrospray mass spectroscopy. Manganese(II)-to-ruthenium(III) intramolecular electron transfer rates were measured as a function of temperature by pulse radiolysis, using oxidation

44

Efficient Generation of the LF Excited State of Tris-(bpy)-Ru(II)  

NLE Websites -- All DOE Office Websites (Extended Search)

Generation of the Ligand Field Excited State of Generation of the Ligand Field Excited State of Tris-(2,2'-bipyridine)-ruthenium(II) through Sequential Two-Photon Capture by [Ru(bpy)3]2+ or Electron Capture by [Ru(bpy)3]3+ David W. Thompson, James F. Wishart, Bruce S. Brunschwig and Norman Sutin J. Phys. Chem. A, 105, 8117-8122 (2001) [Find paper at ACS Publications] Abstract: The relaxation dynamics and product distribution resulting from the decay of high lying excited states generated via sequential two-photon capture by [Ru(bpy)3]2+ or electron capture by [Ru(bpy)3]3+ have been investigated by flash photolysis and pulse radiolysis techniques. In comparison to the decay dynamics for monophotonic excitation, dramatically different relaxation dynamics have been observed. High-power flash excitation yields

45

diff -ruN oommf12a4pre-20100719/app/mmdisp/scripts ...  

Science Conference Proceedings (OSTI)

diff -ruN oommf12a4pre-20100719/app/mmdisp/scripts/mmdisp.tcl oommf12a4pre-20100719bis/app/mmdisp/scripts/mmdisp.tcl --- oommf12a4pre ...

2011-10-16T23:59:59.000Z

46

The structure of mixed H2O-OH monolayer films on Ru(0001)  

E-Print Network (OSTI)

to study the structures produced by water on Ru(0001) atexposure to water at 180 K produced a higher coverage ofThis produced a strong modification in the water film

Tatarkhanov, M.

2008-01-01T23:59:59.000Z

47

Cooperative application/OS DRAM fault recovery.  

Science Conference Proceedings (OSTI)

Exascale systems will present considerable fault-tolerance challenges to applications and system software. These systems are expected to suffer several hard and soft errors per day. Unfortunately, many fault-tolerance methods in use, such as rollback recovery, are unsuitable for many expected errors, for example DRAM failures. As a result, applications will need to address these resilience challenges to more effectively utilize future systems. In this paper, we describe work on a cross-layer application/OS framework to handle uncorrected memory errors. We illustrate the use of this framework through its integration with a new fault-tolerant iterative solver within the Trilinos library, and present initial convergence results.

Ferreira, Kurt Brian; Bridges, Patrick G. (University of New Mexico, Albuquerque, NM); Heroux, Michael Allen; Hoemmen, Mark; Brightwell, Ronald Brian

2012-05-01T23:59:59.000Z

48

In situ Ru K-edge x-ray absorption fine structure studies of electroprecipitated ruthenium dioxide films with relevance to supercapacitor applications.  

SciTech Connect

Modifications in electronic and structural aspects of RuO{sub 2} films electroprecipitated onto Au electrodes induced by changes in the applied potential have been examined in situ in aqueous 0.50 M H{sub 2}SO{sub 4} by Ru K-edge X-ray absorption spectroscopy (XAS). The Fourier transform of the k{sup 3}-weighted extended X-ray absorption fine structure (EXAFS), k{sup 3}x(k), for the film polarized at +1.20V vs RHE is characterized by two shells attributed to Ru-O and Ru-Ru interactions with average distances of 1.94(1) and 3.12(2) {angstrom}, respectively, in agreement with results obtained ex situ for Ru{sup 4+} in hydrous RuO{sub 2} by other groups. In contrast, films in the reduced state, i.e., +0.40 V vs RHE, yielded only a single shell ascribed to a Ru-O interaction at 2.02(1) {angstrom} with no evidence for a distant Ru-Ru shell. The long Ru-O distance is in agreement with that reported earlier for the hydrous Ru{sup 3+} ion [Ru-(OH{sub 2}){sub 6}]{sup 3+} in the solid state. Moreover, the difference between the average Ru-O bond lengths for the reduced and oxidized films is consistent with the difference in the ionic radii of Ru{sup 3+} and Ru{sup 4+}. On this basis it has been suggested that films in the reduced state contain Ru{sup 3+} sites, consistent with the electrochemical results, in a phase with apparently less order beyond the Ru-O coordination sphere than for hydrous RuO{sub 2}.

Mo, Y.; Antonio, M. R.; Stefan, I. C.; Scherson, D. A.; Chemistry; Case Western Reserve Univ.

2000-10-26T23:59:59.000Z

49

Advanced Development of Certified OS Kernels  

E-Print Network (OSTI)

Operating System (OS) kernels form the bedrock of all system software—they can have the greatest impact on the resilience, extensibility, and security of today’s computing hosts. A single kernel bug can easily wreck the entire system’s integrity and protection. We propose to apply new advances in certified software [86] to the development of a novel OS kernel. Our certified kernel will offer safe and application-specific extensibility [8], provable security properties with information flow control, and accountability and recovery from hardware or application failures. Our certified kernel builds on proof-carrying code concepts [74], where a binary executable includes a rigorous machine-checkable proof that the software is free of bugs with respect to specific requirements. Unlike traditional verification systems, our certified software approach uses an expressive general-purpose meta-logic and machine-checkable proofs to support modular reasoning about sophisticated invariants. The rich meta-logic enables us to verify all kinds of low-level

Zhong Shao (pi; Bryan Ford (co-pi

2010-01-01T23:59:59.000Z

50

Schottky barrier height behavior of Pt-Ru alloy contacts on single-crystal n-ZnO  

SciTech Connect

We investigated the Schottky barrier height (SBH) behavior of binary alloy Schottky contacts on n-type zinc oxide (n-ZnO) single crystals. Pt-Ru alloy electrodes were deposited on the Zn-polar and O-polar faces of ZnO substrates by combinatorial ion-beam deposition under identical conditions. The crystal structures of the Pt-Ru alloy film changed from the Pt phase (cubic structure) to the Ru phase (hexagonal structure) in the Pt-Ru alloy phase diagram with decreasing Pt content. The SBH, determined from current-voltage measurements, decreased with decreasing Pt content, indicating that the SBH behavior also followed the Pt-Ru alloy phase diagram. The alloy electrodes on the Zn-polar face showed better Schottky properties than those on the O-polar face. Hard x-ray photoelectron spectroscopy revealed a difference in the interface oxidization of the Pt-Ru alloy: the interface of the O-polar face and Pt-Ru mixed phase with poor crystallinity had a more oxidized layer than that of the Zn-polar face. As a result of this oxidization, the O-polar face, Pt-Ru mixed, and Ru phases showed poor Schottky properties.

Nagata, T.; Haemori, M.; Hayakawa, R.; Yoshitake, M.; Chikyow, T. [Advanced Electronic Materials Center, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044 (Japan); Volk, J. [Research Institute for Technical Physics and Materials Science, H-1121 Budapest, Konkoly Thege Miklos ut 29-33 (Hungary); Yamashita, Y. [Advanced Electronic Materials Center, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044 (Japan); NIMS Beamline Station at SPring-8, National Institute for Materials Science, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148 (Japan); Yoshikawa, H.; Ueda, S.; Kobayashi, K. [NIMS Beamline Station at SPring-8, National Institute for Materials Science, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148 (Japan)

2010-05-15T23:59:59.000Z

51

Astrophysical S-Factors and Reaction Rates of Threshold (p, n)-Reactions on {sup 99-102}Ru  

Science Conference Proceedings (OSTI)

Astrophysical S-factors of (p, n) reactions on {sup 99}Ru, {sup 100}Ru, {sup 101}Ru, and {sup 102}Ru were derived from the sum of experimental isomeric and ground states cross sections measured in the incident proton energy range of 5-9 MeV. They were compared with Hauser-Feshbach statistical model predictions of the NON-SMOKER code. Good agreement was found in the majority of cases. Reaction rates were derived up to 8.7 GK stellar temperature by combining experiment and theory.

Skakun, Ye. [Kharkiv Institute of Physics and Technology, Academicheskaja str., 1, 61108 Kharkiv (Ukraine); Rauscher, T. [Department of Physics, University of Basel, Klingelbergstr, 82, CH-4056 Basel (Switzerland)

2010-08-12T23:59:59.000Z

52

Inside Mac OS X Lion Troubleshooting: Real Solutions for Mac OS X Users, 1st edition  

Science Conference Proceedings (OSTI)

Despite Mac OS X's ease-of-use, Mac users frequently encounter frustrating problems with their systems. And, when they do, they frequently have to resort to online forums (if they can get online), or trek to the Apple Store and wait for a "Genius" to ...

Matt Washchuk

2012-04-01T23:59:59.000Z

53

First search for double-beta decay of 184Os and 192Os  

E-Print Network (OSTI)

A search for double-beta decay of osmium has been realized for the first time with the help of an ultra-low background HPGe gamma detector at the underground Gran Sasso National Laboratories of the INFN (Italy). After 2741 h of data taking with a 173 g ultra-pure osmium sample limits on double-beta processes in 184Os have been established at the level of T_{1/2} about 10^{14}-10^{17} yr. Possible resonant double-electron captures in 184Os were searched for with a sensitivity T_{1/2} about 10^{16} yr. A half-life limit T_{1/2} > 5.3 10^{19} yr was set for the double-beta decay of 192Os to the first excited level of 192Pt. The radiopurity of the osmium sample has been investigated and radionuclides 137Cs, 185Os and 207Bi were detected in the sample, while activities of 40K, 60Co, 226Ra and 232Th were limited at the mBq/kg level.

P. Belli; R. Bernabei; F. Cappella; R. Cerulli; F. A. Danevich; S. d'Angelo; A. Di Marco; A. Incicchitti; G. P. Kovtun; N. G. Kovtun; M. Laubenstein; D. V. Poda; O. G. Polischuk; A. P. Shcherban; V. I. Tretyak

2013-01-15T23:59:59.000Z

54

Cu-Fe  

Science Conference Proceedings (OSTI)

... Ternary Fe-Cu-Ni many-body potential to model reactor pressure vessel ... alloy, This file was provided by Giovanni Bonny (Nuclear Materials Science ...

2013-07-06T23:59:59.000Z

55

Direct Observation of the Kinetically Relevant Site of CO Hydrogenation on Supported Ru Catalyst at 700 K by Time-Resolved FT-IR Spectroscopy  

E-Print Network (OSTI)

In- Situ Spectroscopy of Catalysts; B.M. Weckhuysen, Ed. ;CO Hydrogenation on Supported Ru Catalyst at 700 K by Time-K. 1. Introduction Supported Ru catalysts are among the most

Wasylenko, Walter

2008-01-01T23:59:59.000Z

56

IBM-1 description of the fission products $^{108,110,112}$Ru  

E-Print Network (OSTI)

IBM-1} calculations for the fission products $^{108,110,112}$Ru have been carried out. The even-even isotopes of Ru can be described as transitional nuclei situated between the U(5) (spherical vibrator) and SO(6) ($\\gamma$-unstable rotor) symmetries of the Interacting Boson Model. At first, a Hamiltonian with only one- and two-body terms has been used. Excitation energies and $B$(E2) ratios of gamma transitions have been calculated. A satisfactory agreement has been obtained, with the exception of the odd-even staggering in the quasi-$\\gamma$ bands of $^{110,112}$Ru. The observed pattern is rather similar to the one for a rigid triaxial rotor. A calculation based on a Hamiltonian with three-body terms was able to remove this discrepancy. The relation between the IBM and the triaxial rotor model was also examined.

I. Stefanescu; A. Gelberg; J. Jolie; P. Van Isacker; P. Von Brentano; Y. X. Luo; S. J. Zhu; J. O. Rasmussen; J. H. Hamilton; A. V. Ramayya; X. L. Che

2007-06-12T23:59:59.000Z

57

IBM-1 description of the fission products $^{108,110,112}$Ru  

E-Print Network (OSTI)

IBM-1} calculations for the fission products $^{108,110,112}$Ru have been carried out. The even-even isotopes of Ru can be described as transitional nuclei situated between the U(5) (spherical vibrator) and SO(6) ($\\gamma$-unstable rotor) symmetries of the Interacting Boson Model. At first, a Hamiltonian with only one- and two-body terms has been used. Excitation energies and $B$(E2) ratios of gamma transitions have been calculated. A satisfactory agreement has been obtained, with the exception of the odd-even staggering in the quasi-$\\gamma$ bands of $^{110,112}$Ru. The observed pattern is rather similar to the one for a rigid triaxial rotor. A calculation based on a Hamiltonian with three-body terms was able to remove this discrepancy. The relation between the IBM and the triaxial rotor model was also examined.

Stefanescu, I; Jolie, J; Van Isacker, P; Von Brentano, P; Luo, Y X; Zhu, S J; Rasmussen, J O; Hamilton, J H; Ramayya, A V; Che, X L

2007-01-01T23:59:59.000Z

58

Role of hydrous ruthenium oxide in Pt-Ru direct methanol fuel cell anode electrocatalysts: The importance of mixed electron/proton conductivity  

Science Conference Proceedings (OSTI)

Pt-Ru is the favored anode catalyst for the oxidation of methanol in direct methanol fuel cells (DMFCs). The nanoscale Pt-Ru blacks are accepted to be bimetallic alloys as based on their X-ray diffraction patterns. These bulk and surface analyses show that although practical Pt-Ru blacks have diffraction patterns consistent with an alloy assignment, they are primarily a mix of Pt metal and Ru oxides plus some Pt oxides and only small amounts of Ru metal. Thermogravimetric analysis and X-ray photoelectron spectroscopy of as-received Pt-Ru electrocatalysts indicate that DMFC materials contain substantial amounts of hydrous ruthenium oxide (RuO{sub x}H{sub y}). A potential misidentification of nanoscale Pt-Ru blacks arises because RuO{sub x}H{sub y} is amorphous and cannot be discerned by X-ray diffraction. Hydrous ruthenium oxide is a mixed proton and electron conductor and innately expresses Ru-OH speciation. These properties are of key importance in the mechanism of methanol oxidation, in particular, Ru-OH is a critical component of the bifunctional mechanism proposed for direct methanol oxidation in that it is the oxygen-transfer species that oxidatively dissociates {single_bond}C{triple_bond}O fragments from the Pt surface. The catalysts and membrane-electrode assemblies of DMFCs should not be processed at or exposed to temperatures >150 C, as such conditions deleteriously lower the proton conductivity of hydrous ruthenium oxide and thus affect the ability of the Ru component of the electrocatalyst to dissociate water. With this analytical understanding of the true nature of practical nanoscale Pt-Ru electrocatalysts, the authors can now recommend that hydrous ruthenium oxide, rather than Ru metal or anhydrous RuO{sub 2}, is the preferred Ru speciation in these catalysts.

Rolison, D.R.; Hagans, P.L.; Swider, K.E.; Long, J.W. [Naval Research Lab., Washington, DC (United States). Surface Chemistry Branch

1999-02-02T23:59:59.000Z

59

Voltammetric characterization of ruthenium oxide-based aerogels and other RuO{sub 2} solids: The nature of capacitance in nanostructured materials  

Science Conference Proceedings (OSTI)

Ruthenium dioxide is an important electrode material for applications in electrocatalysis and power sources. High surface areas are achieved in hydrous RuO{sub 2} precipitates and in mixed ruthenium oxide-titanium oxide, (Ru-Ti)O{sub x}, aerogels ( in which nanoscale domains are networked to form a highly porous structure). The electrochemical properties of (Ru-Ti)O{sub x} aerogels, RuO{sub 2}, and hydrous RuO{sub 2} are examined by direct pressing of sub-milligram quantities of the solid onto the surface of a conductive carbon/wax composite. Voltammetric measurements in acidic electrolyte confirm a pseudocapacitive response for all the RuO{sub x}-based materials. Despite an improvement in BET surface area, as compared with other RuO{sub 2} materials, the (Ru-Ti)O{sub x} aerogel displays a low specific capacitance, which correlated to the high degree of crystallinity of the aerogel. Nanocrystallites of rutile RuO{sub 2}, formed during thermal treatment of the sol-gel Ru/Ti precursors, deleteriously affect the specific capacitance of the material; however, all RuO{sub x} domains in the aerogel are voltammetrically addressable. The influence of proton-donating species on the observed capacitance for the (Ru-Ti)O{sub x} aerogel is evident from the dependence of the voltammetric charge in acidic electrolyte on the potential scan rate.

Long, J.W.; Swider, K.E.; Merzbacher, C.I.; Rolison, D.R. [Naval Research Lab., Washington, DC (United States)

1999-02-02T23:59:59.000Z

60

Special Chemical Properties of RuOx Nanowires in RuOx/TiO2(110): Dissociation of Water and Hydrogen Production  

Science Conference Proceedings (OSTI)

Recently, there has been a strong interest in understanding the role of mixed-metal oxides in catalysts used for the production of hydrogen through the splitting of water. Here, we investigate the structural and chemical properties of RuO{sub x}/TiO{sub 2}(110) surfaces employing scanning tunneling microscopy, photoemission, and density functional calculations. Ruthenium oxide forms unique wirelike structures on top of TiO{sub 2}(110) which are very reactive toward water dissociation, being able to cleave O-H bonds at a temperature as low as 200 K. The calculated barrier for the dissociation of water on RuO{sub 2} nanowires is benchmarks for studying this reaction.

Rodriguez J. A.; Kundu, S.; Vidal, A.B.; Yang, F.; Ramírez, P.J.; Senanayake, S.D.; Stacchiola, D.; Evans, J.; Liu, P.

2012-02-23T23:59:59.000Z

Note: This page contains sample records for the topic "fe ru os" 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

NiW and NiRu Bimetallic Catalysts for Ethylene Steam Reforming: Alternative Mechanisms for Sulfur Resistance  

SciTech Connect

Previous investigations of Ni-based catalysts for the steam reforming of hydrocarbons have indicated that the addition of a second metal can reduce the effects of sulfur poisoning. Two systems that have previously shown promise for such applications, NiW and NiRu, are considered here for the steam reforming of ethylene, a key component of biomass derived tars. Monometallic and bimetallic Al{sub 2}O{sub 3}-supported Ni and W catalysts were employed for ethylene steam reforming in the presence and absence of sulfur. The NiW catalysts were less active than Ni in the absence of sulfur, but were more active in the presence of 50 ppm H{sub 2}S. The mechanism for the W-induced improvements in sulfur resistance appears to be different from that for Ru in NiRu. To probe reasons for the sulfur resistance of NiRu, the adsorption of S and C{sub 2}H{sub 4} on several bimetallic NiRu alloy surfaces ranging from 11 to 33 % Ru was studied using density functional theory (DFT). The DFT studies reveal that sulfur adsorption is generally favored on hollow sites containing Ru. Ethylene preferentially adsorbs atop the Ru atom in all the NiRu (111) alloys investigated. By comparing trends across the various bimetallic models considered, sulfur adsorption was observed to be correlated with the density of occupied states near the Fermi level while C{sub 2}H{sub 4} adsorption was correlated with the number of unoccupied states in the d-band. The diverging mechanisms for S and C{sub 2}H{sub 4} adsorption allow for bimetallic surfaces such as NiRu that enhance ethylene binding without accompanying increases in sulfur binding energy. In contrast, bimetallics such as NiSn and NiW appear to decrease the affinity of the surface for both the reagent and the poison.

Rangan, M.; Yung, M. M.; Medlin, J. W.

2012-06-01T23:59:59.000Z

62

Special Chemical Properties of RuOx Nanowires in RuOx/TiO2(110): Dissociation of Water and Hydrogen Production  

DOE Green Energy (OSTI)

Recently, there has been a strong interest in understanding the role of mixed-metal oxides in catalysts used for the production of hydrogen through the splitting of water. Here, we investigate the structural and chemical properties of RuO{sub x}/TiO{sub 2}(110) surfaces employing scanning tunneling microscopy, photoemission, and density functional calculations. Ruthenium oxide forms unique wirelike structures on top of TiO{sub 2}(110) which are very reactive toward water dissociation, being able to cleave O-H bonds at a temperature as low as 200 K. The calculated barrier for the dissociation of water on RuO{sub 2} nanowires is <0.05 eV. The presence of easily formable O vacancies in the ruthenium oxide nanowires facilitates the dissociation of water. Furthermore, RuO{sub x}/TiO{sub 2} (110) surfaces are able to catalyze the production of hydrogen through the water-gas shift reaction (H{sub 2}O + CO {yields} H{sub 2} + CO{sub 2}), exhibiting an activity that compares well with the activity found for extended surfaces of copper typically used as benchmarks for studying this reaction.

Rodriguez J. A.; Kundu, S.; Vidal, A.B.; Yang, F.; Ramírez, P.J.; Senanayake, S.D.; Stacchiola, D.; Evans, J.; Liu, P.

2012-02-23T23:59:59.000Z

63

MgO-Supported Cluster Catalysts with Pt-Ru Interactions Prepared from Pt3Ru6(CO)21(u3-H)(u-H)3  

Science Conference Proceedings (OSTI)

Bimetallic MgO-supported catalysts were prepared by adsorption of Pt{sub 3}Ru{sub 6}(CO){sub 21}({mu}{sub 3}-H)({mu}-H){sub 3} on porous MgO. Characterization of the supported clusters by infrared (IR) spectroscopy showed that the adsorbed species were still in the form of metal carbonyls. The supported clusters were decarbonylated by treatment in flowing helium at 300 C, as shown by IR and extended X-ray absorption fine structure (EXAFS) data, and the resulting supported PtRu clusters were shown by EXAFS spectroscopy to have metal frames that retained Pt-Ru bonds but were slightly restructured relative to those of the precursor; the average cluster size was almost unchanged as a result of the decarbonylation. These are among the smallest reported bimetallic clusters of group-8 metals. The decarbonylated sample catalyzed ethylene hydrogenation with an activity similar to that reported previously for {gamma}-Al{sub 2}O{sub 3}-supported clusters prepared in nearly the same way and having nearly the same structure. Both samples were also active for n-butane hydrogenolysis, with the MgO-supported catalyst being more active than the {gamma}-Al{sub 2}O{sub 3}-supported catalyst.

Chotisuwan,S.; Wittapyakun, J.; Lobo-Lapidus, R.; Gates, B.

2007-01-01T23:59:59.000Z

64

Chains of centered metal clusters with a novel range of distortions: Pr[sub 3]I[sub 3]Ru, Y[sub 3]I[sub 3]Ru, and Y[sub 3]I[sub 3]Ir  

SciTech Connect

The phases R[sub 3]I[sub 3]Ru (R = La, Pr, Gd, Y, Er) and R[sub 3]I[sub 3]Ir (R = Gd, Y) are obtained from the reactions of R, RI[sub 3], and Ru or Ir for 3-4 weeks in sealed Ta tubing at 850-975C, depending on the system. The title phases have been characterized by single-crystal X-ray means at room temperature. The first phase contains quasi-infinite double chains of edge-sharing Pr[sub 6](Ru) octahedra that are sheathed and interbridged by iodine. An evidently continuous distortion of these chains parallels the a/b axial ratio (in the order listed in the first sentence) such that metal octahedra are no longer obvious in Y[sub 3]I[sub 3]Ir; rather chains of trans-edge-sharing square pyramidal Y[sub 4]Ir units bonded base-to-base are more apt. Increased R-R, R-interstitial, and interstitial-interstitial bonding appears to parallel the degree of distortion. Magnetic data for La[sub 3]I[sub 3]Ru and Pr[sub 3]I[sub 3]Ru and the results of extended Hueckel band calculations on Pr[sub 3]I[sub 3]Ru are reported. Polar covalent Pr-Ru interactions and at least a quasi-closed shell configuration are emphasized by the latter.

Payne, M.W.; Dorhout, P.K.; Kim, Sungjin; Hughbanks, T.R.; Corbett, J.D. (Iowa State Univ., Ames (United States) Texas A and M Univ., College Station (United States))

1992-04-15T23:59:59.000Z

65

BIG RU N INDIANA LAKESHORE RUN E LUMBER CIT Y WARSAW JOHNST  

U.S. Energy Information Administration (EIA) Indexed Site

RU RU N INDIANA LAKESHORE RUN E LUMBER CIT Y WARSAW JOHNST OWN BU RNSIDE MILLSTONE FROSTBUR G JUN EAU PLU MVILLE CHERRY HILL KAN E BOSWELL MAR ION CENT ER CREEKSIDE SALTSBUR G POINT N BLAIR SVILL E COU NCIL RU N SIGEL LEWISVILLE BEAR C REEK AR MBRUST OHIOPYLE HALLT ON BR OOKVILLE MAR KTON NOL O RAT HMEL COR SICA MAR CHAND SMIC KSBU RG HOWE APOLLO SEVEN SPRIN GS YAT ESBORO MCNEES LUCIND A GEORGE PIN EY LEEPER TIMBLIN WILL ET FERGUSON CLIMAX PANIC DAVY HILL TIDIOUT E GRAMPIAN SLIGO ROC KVI LLE MAYFIELD VANDERGRIF T GIRT Y SAY NEW SALEM WET MOR E COWANSHAN NOC K ST ILLWAT ER ELD ERS RIDGE BLAIR CARROLLT OWN BU RNIN G WELL COOKPORT MCCREA FU RNACE RIDGWAY NEW ALEXANDR IA IRISH RU N WILC OX PLU M CREEK PADDYTOWN KEATING HOR TON GUF FEY WH ITESBURG BET ULA SMELTZ ER ODONN ELL DECAT UR W HAZELHU RST ST RONGSTOWN COL EGROVE SH EFFIELD WERT Z H OLLOW RED HILL ULYSSES PLATT SVIL LE BR ANCH W LATR OBE LEID Y TRIU

66

ANDREI MANOLESCU, ASSOCIATE PROFESSOR SCOOL OF SCIENCE AND ENGINEERING | RU LECTURE MARATHON  

E-Print Network (OSTI)

ANDREI MANOLESCU, ASSOCIATE PROFESSOR SCOOL OF SCIENCE AND ENGINEERING | RU LECTURE MARATHON: , Schrödinger equation: , ( ) , Hamiltonian (energy) operator: ( ) ( , ) 2 r t i r t H t r t t H t U r t m = = - + r r r h h r Example: The quantum well #12;Open quantum dots in contact with leads Unknown wave

Karlsson, Brynjar

67

Improvement security for RuBee radio-WiMAX mesh networks  

Science Conference Proceedings (OSTI)

Next generation communication standard integrate various access networks technology to become mesh networks. One of air interface standard is metropolitan area wireless broadband service. IEEE 802.16 is the basis for Worldwide Interoperability for Microwave ... Keywords: AAA, RuBee (IEEE 1902.1), WiMAX, gateway access point, group identity key

Tin-Yu Wu; Jhong-Ci Wu; Wei-Fang Weng

2008-09-01T23:59:59.000Z

68

The effect of Ru and Sn additions to Pt on the electrocatalysis of methanol oxidation: An in situ XAS investigation  

DOE Green Energy (OSTI)

Elements such as Ru and Sn used as ad-atoms or as alloying elements are known to enhance methanol oxidation reaction (MOR). Ru, both as alloying element as well as upd deposited on Pt/C is widely acknowledged for enhancing MOR. Sn on the other hand is more controversial, with evidence indicating enhancements for MOR when present as upd layer and marginally effective when present as an alloying element. In situ XAS is used to investigate some of these inconsistencies in the electrocatalysis of MOR. Results indicate that alloying Sn with Pt (Pt{sub 3}Sn primary phase) causes partial filling of the Pt 5 d-band vacancies and increase in the Pt-Pt bond distances which is directly opposite to a similar situation with Ru. Upd Sn however does not perturb Pt structurally or electronically. Ru and Sn (both as alloying element and as upd ad-layer) are associated with oxygenated species, the nature and strength of the Ru. and Sn - oxygen interactions are potential dependent. Hence alloying with Sn renders Pt surface unfavorable for methanol adsorption in contrast to alloying with Ru. Both Ru and Sn however promote MOR via their ability to nucleate oxygenated species on their surface at lower potentials as compared to pure Pt.

Mukerjee, S.; McBreen, J.

1997-07-01T23:59:59.000Z

69

Structural and magnetic properties and superconductivity in Ba(Fe{sub 1-x}TM{sub x}){sub 2}As{sub 2}  

SciTech Connect

We studied the effects on structural and magnetic phase transitions and the emergence of superconductivity in transition metal substituted BaFe{sub 2}As{sub 2}. We grew four series of Ba(Fe{sub 1-x}TM{sub x}){sub 2}As{sub 2} (TM=Ru, Mn, Co+Cr and Co+Mn) and characterized them by crystallographic, magnetic and transport measurements. We also subjected Ba(Fe{sub 1-x}Cr{sub x}){sub 2}As{sub 2} and Ba(Fe{sub 1-x}Co{sub x}){sub 2}As{sub 2} to heat treatment to explore what changes might be induced.

Thaler, Alexander

2012-07-23T23:59:59.000Z

70

Oblique-incidence sputtering of Ru intermediate layer for decoupling of intergranular exchange in perpendicular recording media  

SciTech Connect

During the Ru deposition process for granular type perpendicular magnetic recording media, both a reduction in the Ru intermediate layer thickness and lowering of sputtering gas pressure were successfully achieved by focusing on a self-shadowing effect. Oblique-incidence sputtering with a 60 deg. incident angle under an Ar gas pressure of 0.6 Pa yielded (1) columnar Ru grains with a growth direction of 30 deg. from the film normal, (2) c-plane sheet texture by epitaxial growth on the Pt underlayer, and (3) a flat envelope of the surface and a deep gap at grain boundaries. This change in the Ru structure significantly contributes to reducing exchange coupling among magnetic grains, especially in the initial growth region in an overlying granular medium.

Saito, Shin; Inoue, Ken [Department of Electronic Engineering, Graduate School of Engineering, Tohoku University, 6-6-05, Aoba, Aramaki, Aoba-ku, Sendai 980-8579 Japan (Japan); Takahashi, Migaku [Department of Electronic Engineering, Graduate School of Engineering, Tohoku University, 6-6-05, Aoba, Aramaki, Aoba-ku, Sendai 980-8579 (Japan); Center for Nanobioengineering and Spintronics, Chungnam National University, 220, Gung-Dong, Yuseong-Gu., Daejeon, 305-764 (Korea, Republic of)

2011-04-01T23:59:59.000Z

71

Chemical Effect of Dry and Wet Cleaning of the Ru Protective Layer of the Extreme ultraviolet (EUV) Lithography Reflector  

E-Print Network (OSTI)

Park, Physical Chemistry Chemical Y.B. He, et al. , JournalChemical Effect of Dry and Wet Cleaning of the Ru ProtectiveBerkeley, California 94720 Chemical Sciences Division,

Belau, Leonid

2010-01-01T23:59:59.000Z

72

XPS and FTIR study of Ru/Al{sub 2}O{sub 3} and Ru/TiO{sub 2} catalysts: Reduction characteristics and interaction with a methane-oxygen mixture  

SciTech Connect

The oxidation state of alumina- and titania-supported Ru catalysts has been investigated as a function of reduction temperature, as well as by following the interaction with a methane-oxygen mixture at 773 and 973 K, employing XPS and FTIR techniques. It is found that the chemical behavior of Ru depends strongly on the material on which it is supported. Over Al{sub 2}O{sub 3}, ruthenium is incompletely reduced by treatment with hydrogen at 573 and 823 K, while oxidized Ru species are also detected following exposure of the catalyst to a methane-oxygen mixture at 773 and 973 K. In contrast, over TiO{sub 2}, ruthenium is more easily reduced and is stabilized in its reduced state following hydrogen treatment at 823 K. During treatment with the methane-oxygen mixture, no reoxidation of Ru occurs. The interaction between Ru and TiO{sub 2}, which inhibits the oxidation of ruthenium under conditions of partial oxidation of methane, is related to the unique ability of the Ru/TiO{sub 2} catalyst to promote the direct route of synthesis gas formation.

Elmasides, C.; Kondarides, D.I.; Verykios, X.E. [Univ. of Patras (Greece). Dept. of Chemical Engineering; Gruenert, W. [Ruhr-Universitaet Bochum (Germany). Lehrstuhl fuer Technische Chemie

1999-06-24T23:59:59.000Z

73

FE Clean Coal News  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

clean-coal-news Office of Fossil Energy Forrestal clean-coal-news Office of Fossil Energy Forrestal Building 1000 Independence Avenue, SW Washington, DC 20585202-586-6503 en NETL Innovations Recognized with R&D 100 Awards http://energy.gov/fe/articles/netl-innovations-recognized-rd-100-awards fe/articles/netl-innovations-recognized-rd-100-awards" class="title-link">NETL Innovations Recognized with R&D 100 Awards

74

Low-energy structure of the even-A {sup 96-104}Ru isotopes via g-factor measurements  

SciTech Connect

The transient-field-perturbed angular correlation technique was used with Coulomb excitation in inverse kinematics to perform a systematic measurement of the g factors of the first excited 2{sub 1}{sup +} states in the stable even-A isotopes {sup 96-104}Ru. The measurements have been made relative to one another under matched kinematic conditions and include a measurement of g(2{sub 1}{sup +})=+0.47(3) in {sup 96}Ru.

Taylor, M. J.; Bentley, M. A. [Department of Physics, University of York, York YO10 5DD (United Kingdom); Guerdal, G.; Kumbartzki, G.; Benczer-Koller, N.; Sharon, Y. Y. [Department of Physics and Astronomy, Rutgers University, New Brunswick, New Jersey 08903 (United States); Stuchbery, A. E. [Department of Nuclear Physics, RSPE, Australian National University, Canberra, Australian Capital Territory 0200 (Australia); Berant, Z. [Wright Nuclear Structure Laboratory, Yale University, New Haven, Connecticut 06520 (United States); Nuclear Research Center Negev, Beer-Sheva 84190 (Israel); Casperson, R. J.; Casten, R. F.; Heinz, A.; Ilie, G.; McCutchan, E. A.; Qian, J.; Werner, V.; Williams, E.; Winkler, R. [Wright Nuclear Structure Laboratory, Yale University, New Haven, Connecticut 06520 (United States); Luettke, R. [Wright Nuclear Structure Laboratory, Yale University, New Haven, Connecticut 06520 (United States); Technical University Darmstadt, Darmstadt 64277 (Germany); Shoraka, B. [Department of Physics, University of Surrey, Guildford GU2 7XH (United Kingdom); Wright Nuclear Structure Laboratory, Yale University, New Haven, Connecticut 06520 (United States)

2011-04-15T23:59:59.000Z

75

FE Speeches and Testimony  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

speeches-and-testimony Office of Fossil Energy speeches-and-testimony Office of Fossil Energy Forrestal Building 1000 Independence Avenue, SW Washington, DC 20585202-586-6503 en DOE's Coal Research and Development http://energy.gov/fe/articles/does-coal-research-and-development-0 fe/articles/does-coal-research-and-development-0" class="title-link">DOE's Coal Research and Development

76

Santa Fe, New Mexico  

NLE Websites -- All DOE Office Websites (Extended Search)

Fe, New Mexico Fe, New Mexico May 29-31, 2013 Se q u e n c i n g , F i n i s h i n g , A n a ly s i s i n t h e F u t u r e M e e t i ng 8 t h A nn u a l 2013 SFAF Meeting Page 1 Contents Agenda Overview......................................... 3 May 29 th Agenda.................................. 11 Speaker Presentations (May 29 th ).................. 13 Meet and Greet Party w/ Food & Beverages... 39 Poster Session............................................ 41 May 30 th Agenda................................. 97 Speaker Presentations (May 30

77

Ru L[subscript 2,3] XANES theoretical simulation with DFT: A test of the core-hole treatment  

SciTech Connect

Density functional theory (DFT)-based relativistic calculations were performed to model the Ru L-edge X-ray absorption near edge structure (XANES) spectra of the hexaammineruthenium complex [Ru(NH{sub 3}){sub 6}]{sup 3+} and 'blue dimer' water oxidation catalyst, cis,cis- [(bpy){sub 2}(H{sub 2}O)Ru{sup III}ORu{sup III}(OH{sub 2})(bpy){sub 2}]{sup 4+} (bpy is 2,2-bipyridine). Two computational approaches were compared: simulations without the core-hole and by modeling of the core-hole within the Z+1 approximation. Good agreement between calculated and experimental XANES spectra is achieved without including the core-hole. Simulations with algorithms beyond the Z+1 approximation were only possible in a framework of the scalar relativistic treatment. Time-dependent DFT (TD-DFT) was used to compute the Ru L-edge spectrum for [Ru(NH{sub 3}){sub 6}]{sup 3+} model compound. Three different core-hole treatments were compared in a real-space full multiple scattering XANES modeling within the Green function formalism (implemented in the FEFF9.5 package) for the [Ru(Mebimpy)(bpm)(H{sub 2}O)]{sup 2+} complex. The latter approaches worked well in cases where spin-orbit treatment of relativistic effects is not required.

Alperovich, Igor; Moonshiram, Dooshaye; Soldatov, Alexander; Pushkar, Yulia (SFU-Russia); (Purdue)

2012-10-09T23:59:59.000Z

78

Assessing a Spectroelectrochemical Sensor's Performance for Detecting [Ru(bpy)3]2+ in Natural and Treated Water  

Science Conference Proceedings (OSTI)

A spectroelectrochemical sensor that combines three modes of selectivity in a single device was evaluated in natural and treated water samples using tris-(2,2’-bipyridyl) ruthenium(II) dichloride hexahydrate, [Ru(bpy)3]2+, as a model analyte. The sensor was an optically transparent indium tin oxide (ITO) electrode coated with a thin film of partially sulfonated polystyrene-block-poly(ethylene-ran-butylene)-block-polystyrene (SSEBS). As the potential of the ITO electrode was cycled from +0.7 to +1.3 V, the analyte changed from the colored [Ru(bpy)3]2+ complex to colorless [Ru(bpy)3]3+ complex and the change in absorbance at 450 nm was used as the optical signal for quantification. Calibration curves were obtained for [Ru(bpy)3]2+ in natural well water, river water and treated tap water with detection limits of 108, 139 and 264 nM, respectively. A standard addition method was developed to determine an *unknown* spike addition concentration of [Ru(bpy)3]2+ in well water. The spectroelectrochemical sensor determined the concentration of [Ru(bpy)3]2+ spiked into a sample of Hanford well water to be 0.39*0.03 mM versus the actual concentration of 0.40 mM.

Abu, Eme A.; Bryan, Samuel A.; Seliskar, Carl J.; Heineman, William R.

2012-07-01T23:59:59.000Z

79

Hydrogen adsorption on Ru(001) studied by Scanning TunnelingMicroscopy  

SciTech Connect

The adsorption of hydrogen on Ru(001) was studied by scanning tunneling microscopy at temperatures around 50 K. Hydrogen was found to adsorb dissociatively forming different ordered structures as a function of coverage. In order of increasing coverage {theta} in monolayers (ML) these were ({radical}3 x {radical}3)r30{sup o} at {theta} = 0.3 ML; (2 x 1) at {theta} = 0.50 ML, (2 x 2)-3H at {theta} = 0.75, and (1 x 1) at {theta} = 1.00. Some of these structures were observed to coexist at intermediate coverage values. Close to saturation of 1 ML, H-vacancies (unoccupied three fold fcc hollow Ru sites) were observed either as single entities or forming transient aggregations. These vacancies diffuse and aggregate to form active sites for the dissociative adsorption of hydrogen.

Tatarkhanov, Mous; Rose, Franck; Fomin, Evgeny; Ogletree, D.Frank; Salmeron, Miquel

2008-01-18T23:59:59.000Z

80

Upper limit on spontaneous supercurrents in Sr2RuO4  

SciTech Connect

It is widely believed that the perovskite Sr{sub 2}RuO{sub 4} is an unconventional superconductor with broken time reversal symmetry. It has been predicted that superconductors with broken time reversal symmetry should have spontaneously generated supercurrents at edges and domain walls. We have done careful imaging of the magnetic fields above Sr{sub 2}RuO{sub 4} single crystals using scanning Hall bar and SQUID microscopies, and see no evidence for such spontaneously generated supercurrents. We use the results from our magnetic imaging to place upper limits on the spontaneously generated supercurrents at edges and domain walls as a function of domain size. For a single domain, this upper limit is below the predicted signal by two orders of magnitude. We speculate on the causes and implications of the lack of large spontaneous supercurrents in this very interesting superconducting system.

Chung, Suk Bum

2010-04-05T23:59:59.000Z

Note: This page contains sample records for the topic "fe ru os" from the National Library of EnergyBeta (NLEBeta).
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81

Volume Profile for Intramolecular ET in Ru-Modified Cytochrome c  

NLE Websites -- All DOE Office Websites (Extended Search)

for for Intramolecular Electron-Transfer Reactions: Tetraammine-ruthenium(ligand) Complexes of Cytochrome c Ji Sun, Chang Su, Martin Meier, Stephan S. Isied, James F. Wishart, and Rudi van Eldik Inorg. Chem. 37, 6129-6135 (1998) [Find paper at ACS Publications] Abstract: The kinetics and thermodynamics of a series of reversible intramolecular electron-transfer reactions in systems of the type trans-(NH3)4(L)Ru(His33)-Cyt c(hh) and trans-(NH3)4(L)Ru(His39)-Cyt c(Ck), where L represents NH3, isonicotinamide, 4-ethylpyridine, 3,5-lutidine and pyridine, were studied as a function of pressure in order to construct the first complete volume profiles for such processes. The volume profiles demonstrate a significant partial molar volume increase associated with the

82

Methanol electro-oxidation on unsupported Pt-Ru alloys at different temperatures  

Science Conference Proceedings (OSTI)

A wide compositional range of unsupported platinum-ruthenium alloy catalysts were prepared by thermal decomposition of the chlorides and chloroacids. The electrocatalysts were characterized by cyclic voltammetry, X-ray diffraction, and energy-dispersive X-ray spectroscopy. The BET surface area of the electrocatalysts increases with increasing Ru content up to {approximately}70 atomic percent (a/o) and then reaches a plateau value. Electrodes fabricated from the electrocatalysts were also evaluated as anodes for methanol electro-oxidation in sulfuric acid over a range of temperatures. Unlike the situation for pure Pt, Ru is inactive for methanol electro-oxidation at 25 C but becomes active at higher temperatures. The peak current observed during an anodic potential scan gradually shifts to more cathodic potentials with increasing temperature. When a comparison is made on the basis of electrode geometric surface area, a {approximately}50 a/o ruthenium electrocatalyst provides the highest activity for methanol electro-oxidation at both 25 and 60C. The methanol electro-oxidation rate is 0.5 orders with respect to methanol concentration (between 0.1 and 2 M) for the Pt-Ru ({approximately}50:50) electrode.

Chu, D.; Gilman, S. [Army Research Lab., Fort Monmouth, NJ (United States). Physical Sciences Directorate

1996-05-01T23:59:59.000Z

83

Metal-and hydrogen-bonding competition during water absorption on Pd(111) and Ru(0001)  

SciTech Connect

The initial stages of water adsorption on the Pd(111) and Ru(0001) surfaces have been investigated experimentally by Scanning Tunneling Microscopy in the temperature range between 40 K and 130 K, and theoretically with Density Functional Theory (DFT) total energy calculations and STM image simulations. Below 125 K water dissociation does not occur at any appreciable rate and only molecular films are formed. Film growth starts by the formation of flat hexamer clusters where the molecules bind to the metal substrate through the O-lone pair while making H-bonds with neighboring molecules. As coverage increases, larger networks of linked hexagons are formed with a honeycomb structure, which requires a fraction of the water molecules to have their molecular plane perpendicular to the metal surface with reduced water-metal interaction. Energy minimization favors the growth of networks with limited width. As additional water molecules adsorb on the surface they attach to the periphery of existing islands, where they interact only weakly with the metal substrate. These molecules hop along the periphery of the clusters at intermediate temperatures. At higher temperatures they bind to the metal to continue the honeycomb growth. The water-Ru interaction is significantly stronger than the water-Pd interaction, which is consistent with the greater degree of hydrogen-bonded network formation and reduced water-metal bonding observed on Pd relative to Ru.

Tatarkhanov, Mouslim; Ogletree, D. Frank; Rose, Franck; Mitsui, Toshiyuki; Fomin, Evgeny; Rose, Mark; Cerda, Jorge I.; Salmeron, Miquel

2009-09-03T23:59:59.000Z

84

Water Induced Surface Reconstruction of the Oxygen (2x1) covered Ru(0001)  

DOE Green Energy (OSTI)

Low temperature scanning tunneling microscopy (STM) and density functional theory (DFT) were used to study the adsorption of water on a Ru(0001) surface covered with half monolayer of oxygen. The oxygen atoms occupy hcp sites in an ordered structure with (2x1) periodicity. DFT predicts that water is weakly bound to the unmodified surface, 86 meV compared to the ~;;200 meV water-water H-bond. Instead, we found that water adsorption causes a shift of half of the oxygen atoms from hcp sites to fcc sites, creating a honeycomb structure where water molecules bind strongly to the exposed Ru atoms. The energy cost of reconstructing the oxygen overlayer, around 230 meV per displaced oxygen atom, is more than compensated by the larger adsorption energy of water on the newly exposed Ru atoms. Water forms hydrogen bonds with the fcc O atoms in a (4x2) superstructure due to alternating orientations of the molecules. Heating to 185 K results in the complete desorption of the water layer, leaving behind the oxygen honeycomb structure, which is metastable relative to the original (2x1). This stable structure is not recovered until after heating to temperatures close to 260K.

Maier, Sabine; Cabrera-Sanfelix, Pepa; Stass, Ingeborg; Sanchez-Portal, Daniel; Arnau, Andres; Salmeron, Miquel

2010-08-06T23:59:59.000Z

85

Water adsorption on O(2x2)/Ru(0001) from STM experiments andfirst-principles calculations  

DOE Green Energy (OSTI)

We present a combined theoretical and experimental study of water adsorption on Ru(0001) pre-covered with 0.25 monolayers (ML) of oxygen forming a (2 x 2) structure. Several structures were analyzed by means of Density Functional Theory calculations for which STM simulations were performed and compared with experimental data. Up to 0.25 monolayers the molecules bind to the exposed Ru atoms of the 2 x 2 unit cell via the lone pair orbitals. The molecular plane is almost parallel to the surface with its H atoms pointing towards the chemisorbed O atoms of the 2 x 2 unit cell forming hydrogen bonds. The existence of these additional hydrogen bonds increases the adsorption energy of the water molecule to approximately 616 meV, which is {approx}220 meV more stable than on the clean Ru(0001) surface with a similar configuration. The binding energy shows only a weak dependence on water coverage, with a shallow minimum for a row structure at 0.125 ML. This is consistent with the STM experiments that show a tendency of the molecules to form linear rows at intermediate coverage. Our calculations also suggest the possible formation of water dimers near 0.25 ML.

Cabrera-Sanfelix, P.; Sanchez-Portal, D.; Mugarza, A.; Shimizu,T.K.; Salmeron, M.; Arnau, A.

2007-10-15T23:59:59.000Z

86

The nature and alternate rates of the ribulose 1,5-bisphosphate (RuBP) carboxylase/oxygenase (Rubisco) oxygenation intermediate  

SciTech Connect

Mutant ribulose 1,5-bisphosphate (RuBP) were employed to investigate the partitioning of carbon flow between photosynthesis or photorespiration. Previous functional and structural studies implicate active site Lys329 and Glu48 or R. rubrum RuBp in promoting addition of CO2 to the RuBP-enediol. Two novel O2-dependent side products generated by the K329A and E49Q mutants provided insight into RuBP oxygenase intermediate and roles of Lys329 and Glu48 in oxygenation.

Harpel, M.R.; Chen, Yuh-Ru; Hartman, F.C.

1995-12-31T23:59:59.000Z

87

FE Petroleum Reserves News  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

petroleum-reserves-news Office of Fossil Energy petroleum-reserves-news Office of Fossil Energy Forrestal Building 1000 Independence Avenue, SW Washington, DC 20585202-586-6503 en President Requests $638.0 Million for Fossil Energy Programs http://energy.gov/fe/articles/president-requests-6380-million-fossil-energy-programs fe/articles/president-requests-6380-million-fossil-energy-programs" class="title-link">President Requests $638.0 Million for Fossil Energy Programs

88

A dynamic aspect-oriented system for OS kernels  

Science Conference Proceedings (OSTI)

We propose a dynamic aspect-oriented system for operating system (OS) kernels written in the C language. Unlike other similar systems, our system named KLASY allows the users to pointcut not only function calls but also member accesses to structures. ... Keywords: Linux, aspect-oriented programming, dynamic AOP, operating system, profiling and debugging

Yoshisato Yanagisawa; Kenichi Kourai; Shigeru Chiba

2006-10-01T23:59:59.000Z

89

STATISTICAL EVALUATION OF PROCESSING DATA FROM THE RH RU HG MATRIX STUDY  

DOE Green Energy (OSTI)

An evaluation of the statistical significance of Rh, Ru, and Hg on DWPF Sludge Receipt and Adjustment Tank (SRAT) cycle catalytic hydrogen generation and process chemistry was conducted by the Savannah River National Laboratory (SRNL) using a full-factorial experimental design. This test design can identify significant interactions between these three species in addition to individual effects. Statistical modeling of data from the Rh-Ru-Hg matrix study has been completed. Preliminary data and conclusions were given in an earlier report. This final report concludes the work on the Rh-Ru-Hg matrix study. Modeling results are summarized below. Rhodium was found to: Promote increased total hydrogen mass; Promote an increase in the maximum hydrogen generation rate; Promote an increase in the hydrogen generation rate shortly after acid addition; Shorten the elapsed time between acid addition and the maximum hydrogen generation rate; Increase formate loss; Inhibit NO{sub 2} and total NO{sub x} off-gas species formation; and Reduce nitrite-to-nitrate conversion. Ruthenium was found to: Promote increased total hydrogen mass; Promote an increase in the maximum hydrogen generation rate; Promote an increase in the hydrogen generation rate in the second half of the SRAT cycle; Promote an increase in total CO{sub 2} generated; Increase formate loss; Promote NO{sub 2} and total NO{sub x} off-gas species formation; and Reduce nitrite-to-nitrate conversion. Mercury was found to: Inhibit total hydrogen mass produced; Promote an increase in total CO{sub 2} generated; Promote NO{sub 2} off-gas species formation; and Inhibit total NO{sub x} off-gas species formation. Results confirmed qualitative observations that Rh was activating before Ru for hydrogen generation. An interaction between Rh and Ru was present in the model for the total hydrogen generated during the SRAT, perhaps because the total combined contributions from two separate episodes of hydrogen generation. The first episode was dominated by Rh and the second by Ru. Consequently, the linear statistical model was asked to explain more than one phenomenon and included more terms. Mercury did not significantly impact hydrogen generated by either Rh or Ru in models in this study (all tests had Hg {ge} 0.5 wt% in total solids), whereas tests in Sludge Batches 3 and 4 (SB3 and SB4) with and without Hg showed a very significant negative impact from adding Hg. The conclusion is that once a small quantity of Hg is present, the primary inhibiting effect of Hg is in place, and hydrogen generation is relatively insensitive to further increases in total Hg. Any secondary Hg effects were difficult to quantify and model. Mercury was found to be statistically significant, however, as an inhibiting factor for hydrogen generation when modeling was based on the logarithm of the hydrogen generation rate. Only limited statistical evidence was found for non-linearity and quadratic dependence of other SRAT process measures, such as formate loss or total NO{sub x} generation, on the three matrix variables. The interaction term for Ru with Hg, however, appeared in models for total CO{sub 2}, total NO{sub 2}, and total moles of nitrogen-derived off-gas species. A single interaction between Ru and Hg during nitrite destruction could explain all three of these effects in the observed responses. Catalytic decomposition of nitrite ion by formic acid produces CO{sub 2} plus either NO or N{sub 2}O. The vast majority of the NO produced is converted to NO{sub 2}, and NO{sub 2} is the major fraction of the total moles of nitrogen in the off-gas species. Future experimental work related to catalytic hydrogen generation control is expected with regard to minimizing formic acid use through alternative reductants as well as in pursuing mesoporous media for sequestering the catalytically active noble metals to inhibit catalytic hydrogen generation. Two alternative stoichiometric acid equations are also under development. A summary document is in draft form that provides an overview of progress made in understanding ca

Koopman, D

2009-04-17T23:59:59.000Z

90

Structure and Reactions of Carbon and Hydrogen on Ru(0001): A Scanning Tunneling Microscopy Study  

DOE Green Energy (OSTI)

The interaction between carbon and hydrogen atoms on a Ru(0001) surface was studied using scanning tunneling microscopy (STM), Density Functional Theory (DFT) and STM image calculations. Formation of CH species by reaction between adsorbed H and C was observed to occur readily at 100 K. When the coverage of H increased new complexes of the form CH+nH (n = 1, 2 and 3) were observed. These complexes, never observed before, might be precursors for further hydrogenation reactions. DFT analysis reveals that a considerable energy barrier exists for the CH+H {yields} CH{sub 2} reaction.

Shimizu, Tomoko K.; Mugarza, Aitor; Cerda, Jorge; Salmeron, Miquel

2008-09-09T23:59:59.000Z

91

Observation of ferromagnetic resonance in strontium ruthenate (SrRuO3)  

SciTech Connect

We report the observation of ferromagnetic resonance (FMR) in SrRuO3 using the time-resolved magnetooptical Kerr effect. The FMR oscillations in the time-domain appear in response to a sudden, optically induced change in the direction of easy-axis anistropy. The high FMR frequency, 250 GHz, and large Gilbert damping parameter, alpha ~;; 1, are consistent with strong spin-orbit coupling. We find that the parameters associated with the magnetization dynamics, including alpha, have a non-monotonic temperature dependence, suggestive of a link to the anomalous Hall effect.

Langner, Matthew C.; Kantner, Colleen L.S.; Chu, Y.H.; Martin, Lane M.; Yu, Pu; Ramesh, R.; Orenstein, Joe

2008-12-03T23:59:59.000Z

92

Characterization and electrocatalytic properties of titanium-based Ru0.3Co0.7-xCex mixed oxide electrodes for oxygen evolution in alkaline solution  

Science Conference Proceedings (OSTI)

Ti-supported RuO2-Co3O4-CeO2 (Ru0.3Co0.7-xCex oxide, 0 ? x ? 0.7) electrodes were prepared by sol-gel process. The phase structure, surface ...

Hongjun Wu; Qin Ruan; Li Li; Baohui Wang

2011-01-01T23:59:59.000Z

93

V-137: Apple Mac OS X update for Java | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

7: Apple Mac OS X update for Java V-137: Apple Mac OS X update for Java April 18, 2013 - 6:00am Addthis PROBLEM: Apple Mac OS X update for Java PLATFORM: Mac OS X 10.6, OS X Lion...

94

The structure of mixed H2O-OH monolayer films on Ru(0001)  

Science Conference Proceedings (OSTI)

Scanning tunneling microscopy (STM) and x-ray absorption spectroscopy (XAS) have been used to study the structures produced by water on Ru(0001) at temperatures above 140 K. It was found that while undissociated water layers are metastable below 140 K, heating above this temperature produces drastic transformations whereby a fraction of the water molecules partially dissociate and form mixed H{sub 2}O-OH structures. XPS and XAS revealed the presence of hydroxyl groups with their O-H bond essentially parallel to the surface. STM images show that the mixed H{sub 2}O-OH structures consist of long narrow stripes aligned with the three crystallographic directions perpendicular to the close-packed atomic rows of the Ru(0001) substrate. The internal structure of the stripes is a honeycomb network of H-bonded water and hydroxyl species. We found that the metastable low temperature molecular phase can also be converted to a mixed H{sub 2}O-OH phase through excitation by the tunneling electrons when their energy is 0.5 eV or higher above the Fermi level. Structural models based on the STM images were used for Density Functional Theory optimizations of the stripe geometry. The optimized geometry was then utilized to calculate STM images for comparison with the experiment.

Tatarkhanov, M.; Fomin, E.; Salmeron, M.; Andersson, K.; Ogasawara, H.; Pettersson, L.G.M.; Nilsson, A.; Cerda, J.I.

2008-10-20T23:59:59.000Z

95

The Structure of Mixed H(2)O-OH Monolayer Films on Ru (0001)  

Science Conference Proceedings (OSTI)

Scanning tunneling microscopy (STM) and x-ray absorption spectroscopy (XAS) have been used to study the structures produced by water on Ru(0001) at temperatures above 140 K. It was found that while undissociated water layers are metastable below 140 K, heating above this temperature produces drastic transformations, whereby a fraction of the water molecules partially dissociate and form mixed H{sub 2}O-OH structures. X-ray photoelectron spectroscopy and XAS revealed the presence of hydroxyl groups with their O-H bond essentially parallel to the surface. STM images show that the mixed H{sub 2}O-OH structures consist of long narrow stripes aligned with the three crystallographic directions perpendicular to the close-packed atomic rows of the Ru(0001) substrate. The internal structure of the stripes is a honeycomb network of H-bonded water and hydroxyl species. We found that the metastable low temperature molecular phase can also be converted to a mixed H{sub 2}O-OH phase through excitation by the tunneling electrons when their energy is 0.5 eV or higher above the Fermi level. Structural models based on the STM images were used for density functional theory optimizations of the stripe geometry. The optimized geometry was then utilized to calculate STM images for comparison with the experiment.

Tatarkhanov, M.; Fomin, E.; Salmeron, M.; Andersson, K.; Ogasawara, H.; Pettersson, L.G.M.; Nilsson, A.; Cerda, J.I.

2009-05-26T23:59:59.000Z

96

FE Transition Deliverables  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Transition Deliverables Transition Deliverables To: Cynthia Quarterman From: Charles Roy, FE-3 Date: 12/04/08 Re: On 12/03/08 Cynthia Quarterman requested a list of major projects with quick starts and job creation from Vic Der. Attached is a hard copy of this document. An electronic version of this document will be submitted to Cynthia Quarterman through the Office of Management. If there are any questions, please contact Charles Roy at 202-586-8977. ,^ (^// Cc~y Major Projects with Quick Starts & Jobs Creation Office of Clean Coal Summary of Projects and Job Creation The following table outlines the near-term possibilities for projects that capture and sequester carbon from coal-based systems. The potential jobs associated with these activities are listed along with likely construction and operation dates. Since the funding

97

DE-FE0000833  

NLE Websites -- All DOE Office Websites (Extended Search)

An Integrated Water Treatment Technology Solution for An Integrated Water Treatment Technology Solution for Sustainable Water Resource Management in the Marcellus Shale DE-FE0000833 Final Scientific / Technical Report Report Date: June 30, 2011 Team Members: Altela, Inc. Argonne National Laboratory BLX, Inc. CWM Environmental, Inc. Point of Contact: Matthew Bruff Altela, Inc. Phone: 303-993-1951 Facsimile: 303-993-1955 Email: matthew.bruff@altelainc.com DISCLAIMER: "This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereto, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus,

98

Dependence of Electronic Structure of SrRuO3 and the Degree of Correlation on Cation Off-Stoichiometry  

Science Conference Proceedings (OSTI)

We have grown and studied high quality SrRuO{sub 3} films grown by MBE as well as PLD. By changing the oxygen activity during deposition we were able to make SrRuO{sub 3} samples that were stoichiometric (low oxygen activity) or with ruthenium vacancies (high oxygen activity). Samples with strontium vacancies were found impossible to produce since the ruthenium would precipitate out as RuO{sub 2}. The volume of the unit cell of SrRuO{sub 3} becomes larger as more ruthenium vacancies are introduced. The residual resistivity ratio (RRR) and room temperature resistivity were found to systematically depend on the volume of the unit cell and therefore on the amount of ruthenium vacancies. The RRR varied from {approx}30 for stoichiometric samples to less than two for samples that were very ruthenium poor. The room temperature resistivity varied from 190 {micro}{Omega} cm for stoichoimetric samples to over 300 {micro}{Omega} cm for very ruthenium poor samples. UPS spectra show a shift of weight from the coherent peak to the incoherent peak around the Fermi level when samples have more ruthenium vacancies. Core level XPS spectra of the ruthenium 3d lines show a strong screened part in the case of stoichiometric samples. This screened part disappears when ruthenium vacancies are introduced. Both the UPS and the XPS results are consistent with the view that correlation increases as the amount of ruthenium vacancies increase.

Siemons, W.

2011-08-19T23:59:59.000Z

99

T-658: Java for Mac OS X 10.6 Update 5 & Java for Mac OS X 10.5 Update 10 |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

8: Java for Mac OS X 10.6 Update 5 & Java for Mac OS X 10.5 8: Java for Mac OS X 10.6 Update 5 & Java for Mac OS X 10.5 Update 10 T-658: Java for Mac OS X 10.6 Update 5 & Java for Mac OS X 10.5 Update 10 June 30, 2011 - 3:22pm Addthis PROBLEM: Java for Mac OS X 10.6 Update 5 & Java for Mac OS X 10.5 Update 10 PLATFORM: Mac OS X v10.5.8, Mac OS X Server v10.5.8, Mac OS X v10.6.6 and later, Mac OS X Server v10.6.6 and later ABSTRACT: Multiple vulnerabilities exist in Java 1.6.0_24, the most serious of which may allow an untrusted Java applet to execute arbitrary code outside the Java sandbox. Visiting a web page containing a maliciously crafted untrusted Java applet may lead to arbitrary code execution with the privileges of the current user. These issues are addressed by updating to Java version 1.6.0_26. Further information is available via the Java

100

Pt3Ru6 Clusters Supported on gamma-Al2O3: Synthesis from Pt3Ru6(Cu)21(u3-H)(u-H)3, Structural Characterization, and Catalysis of Ethylene Hydrogenation and n-Butane Hydrogenolysis  

SciTech Connect

The supported clusters Pt-Ru/{gamma}-Al{sub 2}O{sub 3} were prepared by adsorption of the bimetallic precursor Pt{sub 3}Ru{sub 6}(Cu){sub 21}({mu}{sub 3}-H)({mu}-H){sub 3} from CH{sub 2}Cl{sub 2} solution onto {gamma}-Al{sub 2}O{sub 3} followed by decarbonylation in He at 300 C. The resultant supported clusters were characterized by infrared (IR) and extended X-ray absorption fine structure (EXAFS) spectroscopies and as catalysts for ethylene hydrogenation and n-butane hydrogenolysis. After adsorption, the {nu}{sub CO} peaks characterizing the precursor shifted to lower wavenumbers, and some of the hydroxyl bands of the support disappeared or changed, indicating that the CO ligands of the precursor interacted with support hydroxyl groups. The EXAFS results show that the metal core of the precursor remained essentially unchanged upon adsorption, but there were distortions of the metal core indicated by changes in the metal-metal distances. After decarbonylation of the supported clusters, the EXAFS data indicated that Pt and Ru atoms interacted with support oxygen atoms and that about half of the Pt-Ru bonds were maintained, with the composition of the metal frame remaining almost unchanged. The decarbonylated supported bimetallic clusters reported here are the first having essentially the same metal core composition as that of a precursor metal carbonyl, and they appear to be the best-defined supported bimetallic clusters. The material was found to be an active catalyst for ethylene hydrogenation and n-butane hydrogenolysis under conditions mild enough to prevent substantial cluster disruption.

Chotisuwan,S.; Wittayakun, J.; Gates, B.

2006-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "fe ru os" 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

Photophysical Studies of Ru(II)tris(2,2;#8242;-bipyridine) Confined within a Zn(II)?Trimesic Acid Polyhedral Metal?Organic Framework  

Science Conference Proceedings (OSTI)

The ability to confine photoactive catalysts within metal-organic framework (MOF) materials affords the opportunity to expand the functional diversity of these materials into solar based applications. Here, the confinement of Ru(II)tris(2,2'-bipyridine) (RuBpy) by a MOF material derived from Zn(II) ions and trimesic acid (hereafter, USF2) is examined. Although the encapsulated RuBpy could not be crystallographically resolved within the MOF framework, the photophysical properties of the complex are characteristic of confinement including extended triplet metal-to-ligand ({sup 3}MLCT) lifetime ({tau}{sub ethanol} = 614 ns and {tau}{sub USF2} = 1.2 {micro}s at 25 C) and a slight hypsochromic shift in the steady-state emission spectrum relative to RuBpy in ethanol. The extended lifetime is attributed to a deactivation of a nonradiative {sup 3}dd that is antibonding with respect to the Ru(II)-bipyridine due to a confined molecular environment. These results represent one of the first examples of RuBpy encapsulation and photophysical characterization within a polyhedral MOF material.

Larsen, Randy W.; Wojtas, Lukasz (USF)

2012-10-25T23:59:59.000Z

102

Suhr 7900.955 L*E+ru Pkzza. S. Iv.. Washington, D.C. 20024-i  

Office of Legacy Management (LM)

Suhr 7900.955 L*E+ru Pkzza. S. Iv.. Washington, D.C. 20024-i Suhr 7900.955 L*E+ru Pkzza. S. Iv.. Washington, D.C. 20024-i 7117~03.8J.cdy.4 23 September 19E M r. Andrew Wallo, III, NE-23 Division of Facility & Site Decommissioning Projects U.S. Department of Energy Germantown, Maryland 20545 Dear M r. Wallo: ELIMINATION RECOMMENDATION -- COLLEGES AND UN11 The attached elimination recommendation was prepar with your suggestion during our meeting on 22 September includes 26 colleges and universities identified.in Enc Aerospace letter subject: Status of Actions - F&RAP ! 27 May 1987; three institutions (Tufts College, Univerr and the University of Washington) currently identified list of sites under consideration; and six institution: tified during a search of Hanford records. The attached was prepared to document the eliminai

103

Effect of crystallinity and nonstoichiometric region on dielectric properties of SrTiO{sub 3} films formed on Ru  

Science Conference Proceedings (OSTI)

The dielectric constant depending on the film thickness for SrTiO{sub 3} films formed on Ru was investigated after an annealing step at 600 deg. C, which shows that the dielectric constant increased abruptly with the film thickness up to 20 nm and then increased slightly, remaining relatively constant at a value of about 65. The abrupt increase was due to the crystallinity of SrTiO{sub 3} films. On the other hand, the slight increase was related to the existence of nonstoichiometric region near the interface of SrTiO{sub 3} film and Ru, which was intermixed with SrTiO{sub 3} and Ti-O phases having an equivalent oxide thickness over 0.32 nm.

Kim, Ja-Yong; Ahn, Ji-Hoon; Kang, Sang-Won; Kim, Jin-Hyock; Roh, Jae-Sung [Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, 373-1, Guseong-dong, Yuseong-gu, Daejeon 305-701 (Korea, Republic of); Hynix Semiconductor Incorporated, San 136-1, Ami-ri, Bubal-eub, Icheon-si, Kyoungki-do 467-701 (Korea, Republic of)

2007-08-27T23:59:59.000Z

104

Electromagnetic properties of the first 2{sub 1}{sup +} excited states in {sup 100,102,104}Ru  

Science Conference Proceedings (OSTI)

Measurements of Coulomb excitation probabilities of the first 2{sub 1}{sup +} state of {sup 100,102,104}Ru were carried out using back-scattered ions of {sup 4}He and {sup 16}O. The static quadrupole moments Q{sub 2{sub 1}{sup +}} and the reduced transition probabilities B(E2;0{sub 1}{sup +}{r_arrow}2{sub 1}{sup +}) have been determined using the reorientation effect. The quadrupole moments Q{sub 2{sub 1}{sup +}} deduced for the positive sign of the 2{sub 2}{sup +} interference term are {minus}0.54{plus_minus}0.07 eb, {minus}0.64{plus_minus}0.05 eb, {minus}0.62{plus_minus}0.08 eb for {sup 100}Ru, {sup 102}Ru, and {sup 104}Ru, respectively. The reduced transition probabilities B(E2;0{sub 1}{sup +}{r_arrow}2{sub 1}{sup +}) are 0.493{plus_minus}0.003 e{sup 2}b{sup 2}, 0.614{plus_minus}0.004 e{sup 2}b{sup 2}, and 0.809{plus_minus}0.006 e{sup 2}b{sup 2}, respectively. A compilation of the available experimental results for the reduced eletric quadrupole transition probability B(E2;0{sub 1}{sup +}{r_arrow}2{sub 1}{sup +}) and for the static quadrupole moments Q{sub 2{sub 1}{sup +}} for the even ruthenium stable isotopes (96{le}A{le}104) are presented. {copyright} {ital 1998} {ital The American Physical Society}

Hirata, J.H.; Salem-Vasconcelos, S.; Bechara, M.J.; Gomes, L.C.; Dietzsch, O. [Instituto de Fisica, Universidade de Sao Paulo, Caixa Postal 66318, Sao Paulo, SP 05315-970 (Brazil)] [Instituto de Fisica, Universidade de Sao Paulo, Caixa Postal 66318, Sao Paulo, SP 05315-970 (Brazil)

1998-01-01T23:59:59.000Z

105

Effective thermal boundary resistance from thermal decoupling of magnons and phonons in SrRuO3 thin films  

SciTech Connect

We use the time-resolved magneto-optical Kerr effect (TRMOKE) to measure the local temperature and heat flow dynamics in ferromagnetic SrRuO3 thin films. After heating by a pump pulse, the film temperature decays exponentially, indicating that the heat flow out of the film is limited by the film/substrate interface. We show that this behavior is consistent with an effective boundary resistance resulting from disequilibrium between the spin and phonon temperatures in the film.

Langner, M.C.; Kantner, C.L.S.; Chu, Y.H.; Martin, L.M.; Yu, P.; Ramesh, R.; Orenstein, J.

2010-01-20T23:59:59.000Z

106

Fe-rich FeSiBPCu Nano-crystalline Soft Magnetic Alloys ...  

Science Conference Proceedings (OSTI)

Symposium, Magnetic Materials for Energy Applications IV ... Fe-rich FeSiBPCu Nano-crystalline Soft Magnetic Alloys Contributable To Energy-saving. Author(s)  ...

107

T-603: Mac OS X Includes Some Invalid Comodo Certificates | Department of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

03: Mac OS X Includes Some Invalid Comodo Certificates 03: Mac OS X Includes Some Invalid Comodo Certificates T-603: Mac OS X Includes Some Invalid Comodo Certificates April 15, 2011 - 1:46am Addthis PROBLEM: Mac OS X Includes Some Invalid Comodo Certificates PLATFORM: For Mac OS X Server v10.5.8, Mac OS X v10.5.8, Mac OS X v10.6.7 and Mac OS X Server v10.6.7 ABSTRACT: The operating system includes some invalid certificates. The vulnerability is due to the invalid certificates and not the operating system itself. Other browsers, applications, and operating systems are affected. reference LINKS: SecurityTracker Alert ID: 1025362 APPLE-SA-2011-04-14-4 Security Update 2011-002 Apple Support Downloads IMPACT ASSESSMENT: High Discussion: A partner of Comodo with Registration Authority capabilities suffered an internal security breach and the attacker caused seven certificates to be

108

T-529: Apple Mac OS PackageKit Distribution Script Remote Code...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

January 6, 2011 - 2:53pm Addthis PROBLEM: Apple Mac OS PackageKit Distribution Script Remote Code Execution Vulnerability PLATFORM: Apple Mac OS X Server 10.6 - 10.6.5, Apple...

109

Microsoft Word - Fe-S_Clusters  

NLE Websites -- All DOE Office Websites (Extended Search)

structure of an intermediate form of FeFe- hydrogenase (HydA EFG ) from the green algae Chlamydomonas reinhardtii expressed in Escherichia coli in a genetic background devoid...

110

V-054: IBM WebSphere Application Server for z/OS Arbitrary Command  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

4: IBM WebSphere Application Server for z/OS Arbitrary Command 4: IBM WebSphere Application Server for z/OS Arbitrary Command Execution Vulnerability V-054: IBM WebSphere Application Server for z/OS Arbitrary Command Execution Vulnerability December 25, 2012 - 12:08am Addthis PROBLEM: IBM WebSphere Application Server for z/OS Arbitrary Command Execution Vulnerability PLATFORM: IBM HTTP Server for z/OS Version 5.3 ABSTRACT: A vulnerability was reported in the IBM HTTP Server component 5.3 in IBM WebSphere Application Server (WAS) for z/OS REFERENCE LINKS: Security vulnerability Reference #:1620945 Xforce: 80684 Secunia Advisory SA51656 CVE-2012-5955 IMPACT ASSESSMENT: High DISCUSSION: A vulnerability has been reported in IBM WebSphere Application Server for z/OS, which can be exploited by malicious people to compromise a vulnerable

111

T-721:Mac OS X Directory Services Lets Local Users View User Password  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

21:Mac OS X Directory Services Lets Local Users View User 21:Mac OS X Directory Services Lets Local Users View User Password Hashes T-721:Mac OS X Directory Services Lets Local Users View User Password Hashes September 20, 2011 - 8:45am Addthis PROBLEM: Mac OS X Directory Services Lets Local Users View User Password Hashes. PLATFORM: Mac OS X Lion (10.7) ABSTRACT: A local user can view user password hashes. reference LINKS: SecurityTracker Alert ID: 1026067 Apple Support Downloads Apple Security Updates Apple OS X Lion v10.7.1 Update IMPACT ASSESSMENT: Medium Discussion: A vulnerability was reported in Mac OS X. A local user can view user password hashes. A local user can invoke the following Directory Services command line command to view the password hash for the target user: dscl localhost -read /Search/Users/[target user] A local user can change their

112

U-121: Apple iOS Bugs Let Remote Users Execute Arbitrary Code, Conduct  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

21: Apple iOS Bugs Let Remote Users Execute Arbitrary Code, 21: Apple iOS Bugs Let Remote Users Execute Arbitrary Code, Conduct Cross-Site Scripting Attacks, and Obtain Potentially Sensitive Information U-121: Apple iOS Bugs Let Remote Users Execute Arbitrary Code, Conduct Cross-Site Scripting Attacks, and Obtain Potentially Sensitive Information March 9, 2012 - 7:00am Addthis PROBLEM: Apple iOS Bugs Let Remote Users Execute Arbitrary Code, Conduct Cross-Site Scripting Attacks, and Obtain Potentially Sensitive Information PLATFORM: Apple iOS Version(s): prior to 5.1 ABSTRACT: Multiple vulnerabilities were reported in Apple iOS. reference LINKS: SecurityTracker Alert ID: 1026774 Apple Security Updates About the security content of iOS 5.1 Software Update CVE-2012-0641, CVE-2012-0642, CVE-2012-0643, CVE-2011-3453, CVE-2012-0644,

113

T-529: Apple Mac OS PackageKit Distribution Script Remote Code Execution  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

29: Apple Mac OS PackageKit Distribution Script Remote Code 29: Apple Mac OS PackageKit Distribution Script Remote Code Execution Vulnerability T-529: Apple Mac OS PackageKit Distribution Script Remote Code Execution Vulnerability January 6, 2011 - 2:53pm Addthis PROBLEM: Apple Mac OS PackageKit Distribution Script Remote Code Execution Vulnerability PLATFORM: Apple Mac OS X Server 10.6 - 10.6.5, Apple Mac OS X 10.6 - 10.6.5 Vulnerable Platforms Details ABSTRACT: A format string issue exists in PackageKit's handling of distribution scripts. A man-in-the-middle attacker may be able to cause an unexpected application termination or arbitrary code execution when Software Update checks for new updates. This issue is addressed through improved validation of distribution scripts. This issue does not affect systems prior to Mac OS

114

Zn-Doped RuO2 Electrocatalyts for Selective Oxygen Evolution: Relationship Between Local Structure and Electrocatalytic Behavior in Chloride Containing Media  

SciTech Connect

Nanocrystalline electrocatalytically active materials of chemical composition Ru{sub 1-x}Zn{sub x}O{sub 2} (0 < x < 0.3) were synthesized by freeze-drying technique. The diffraction patterns of the prepared samples corresponded to single-phase rutile type oxides.Local structure of the Ru{sub 1-x}Zn{sub x}O{sub 2} based on refinement of Ru K and Zn K edge EXAFS functions shows clustering of the Zn ions in the blocks with ilmenite structure intergrowing with Ru-rich rutile blocks. Ru{sub 1-x}Zn{sub x}O{sub 2} oxides are selective catalysts for anodic oxygen evolution. The selectivity toward oxygen evolution in the presence of chlorides is affected by the actual Zn content and can be ascribed to structural hindrance of the formation of the surface peroxo group based active sites for chlorine evolution. The selectivity toward oxygen evolution in presence of chlorides is accompanied by the drop of the total activity, which gets more pronounced with increasing Zn content.

V Petrykin; K Macounova; J Franc; O Shlyakhtin; M Klementova; S Mukerjee; p Krtil

2011-12-31T23:59:59.000Z

115

Isotopic tracer studies of Fischer-Tropsch Synthesis over Ru/TiO sub 2 catalysts  

DOE Green Energy (OSTI)

Fischer-Tropsch synthesis is a process in which CO and H{sub 2} react to give predominantly liquid hydrocarbons. The reaction can be considered a special type of polymerization in which the monomer is produced in situ, and chain growth occurs by a sequence of independently repeated additions of the monomer to the growing chain. A investigation has been conducted to study the CO hydrogenation reaction in order to better understand catalyst deactivation and the elementary surface processes involved in chain growth. Isotopic tracers are used in conjunction with transient-response techniques in this study of Fischer-Tropsch synthesis over Ru/TiO{sub 2} catalysts. Experiments are conducted at a total pressure of 1 atmosphere, reaction temperatures of 453--498 K and D{sub 2}/CO (or H{sub 2}/CO) ratios of 2--5. Synthesis products are analyzed by gas chromatography or isotope-ratio gas chromatography-mass spectrometry. Rate constants for chain initiation, propagation and termination are evaluated under steady-state reaction conditions by using transients in isotopic composition. The activation energy for chain termination is much higher than that for propagation, accounting for the observed decrease in the chain growth parameter are also estimated. Coverages by reaction intermediates are also estimated. When small amounts of {sup 12}C-labelled ethylene are added to {sup 13}CO/H{sub 2} synthesis gas, ethylene acts as the sole chain initiator. Ethylene-derived carbon also accounts for 45% of the C{sub 1} monomer pool. 102 refs., 29 figs., 11 tabs.

Krishna, K.R.

1992-01-01T23:59:59.000Z

116

Isotopic tracer studies of Fischer-Tropsch Synthesis over Ru/TiO{sub 2} catalysts  

DOE Green Energy (OSTI)

Fischer-Tropsch synthesis is a process in which CO and H{sub 2} react to give predominantly liquid hydrocarbons. The reaction can be considered a special type of polymerization in which the monomer is produced in situ, and chain growth occurs by a sequence of independently repeated additions of the monomer to the growing chain. A investigation has been conducted to study the CO hydrogenation reaction in order to better understand catalyst deactivation and the elementary surface processes involved in chain growth. Isotopic tracers are used in conjunction with transient-response techniques in this study of Fischer-Tropsch synthesis over Ru/TiO{sub 2} catalysts. Experiments are conducted at a total pressure of 1 atmosphere, reaction temperatures of 453--498 K and D{sub 2}/CO (or H{sub 2}/CO) ratios of 2--5. Synthesis products are analyzed by gas chromatography or isotope-ratio gas chromatography-mass spectrometry. Rate constants for chain initiation, propagation and termination are evaluated under steady-state reaction conditions by using transients in isotopic composition. The activation energy for chain termination is much higher than that for propagation, accounting for the observed decrease in the chain growth parameter are also estimated. Coverages by reaction intermediates are also estimated. When small amounts of {sup 12}C-labelled ethylene are added to {sup 13}CO/H{sub 2} synthesis gas, ethylene acts as the sole chain initiator. Ethylene-derived carbon also accounts for 45% of the C{sub 1} monomer pool. 102 refs., 29 figs., 11 tabs.

Krishna, K.R.

1992-01-01T23:59:59.000Z

117

FE Press Releases and Techlines  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

fe/techlines Office of Fossil Energy Forrestal Building fe/techlines Office of Fossil Energy Forrestal Building 1000 Independence Avenue, SW Washington, DC 20585202-586-6503 en Energy Department Authorizes Additional Volume at Proposed Freeport LNG Facility to Export Liquefied Natural Gas http://energy.gov/articles/energy-department-authorizes-additional-volume-proposed-freeport-lng-facility-export Energy Department Authorizes Additional Volume at Proposed Freeport LNG Facility to Export Liquefied Natural Gas

118

Charge transport and magnetization profile at the interface between the correlated metal CaRuO{sub3} and the antiferromagnetic insulator CaMnO{sub3}.;  

Science Conference Proceedings (OSTI)

A combination of spectroscopic probes was used to develop a detailed experimental description of the transport and magnetic properties of superlattices composed of the paramagnetic metal CaRuO{sub 3} and the antiferromagnetic insulator CaMnO{sub 3}. The charge-carrier density and Ru valence state in the superlattices are not significantly different from those of bulk CaRuO{sub 3}. The small charge transfer across the interface implied by these observations confirms predictions derived from density-functional calculations. However, a ferromagnetic polarization due to canted Mn spins penetrates 3-4 unit cells into CaMnO{sub 3}, far exceeding the corresponding predictions. The discrepancy may indicate the formation of magnetic polarons at the interface.

Freeland, J. W.; Chakhalian, J.; Boris, A. V.; Tonnerre, J-M.; Kavich, JJ.; Yordanov, P.; Grenier,S.; Zschack, P.; Karapetrova, E.; Popovich, P.; Lee, H. N.; Keimer, B. (X-Ray Science Division); ( PSC-USR); (Univ. of Arkansas); (Max Planck Inst. for Solid State Research); (Loughborough Univ.); (CNRS and Univ. Joseph Fourier); (Univ. of Illinois); (ORNL)

2010-01-01T23:59:59.000Z

119

Preparation and electrical properties of xCaRuO{sub 3}/(1 - x)CaTiO{sub 3} perovskite composites  

SciTech Connect

CaRuO{sub 3}-CaTiO{sub 3} ceramic composites were prepared by sintering for short times for potential applications in the areas of electronic ceramics. Scanning electron microscopy and energy dispersive X-ray analysis showed two separate phases, CaRuO{sub 3} and CaTiO{sub 3} in the composite. Conductivity data, measured by the four-probe method, showed that the composites have high electrical conductivity when x {>=} 0.19 in xCaRuO{sub 3}-(1 - x)CaTiO{sub 3} composites. Furthermore, the nanoparticle of calcium ruthenate prepared by reverse micelle synthesis was used to be conductive agent for the composite. The result shows that the use of nano-sized calcium ruthenate enabled higher electrical conductivity to be maintained down to x = 0.09.

Jiao, Shuqiang, E-mail: sj332@cam.ac.uk [Department of Materials Science and Metallurgy, University of Cambridge, Pembroke Street, Cambridge CB2 3QZ (United Kingdom); Kumar, Krishnankutty-Nair P.; Kilby, Kamal Tripuraneni [Department of Materials Science and Metallurgy, University of Cambridge, Pembroke Street, Cambridge CB2 3QZ (United Kingdom); Fray, Derek J., E-mail: djf25@cam.ac.uk [Department of Materials Science and Metallurgy, University of Cambridge, Pembroke Street, Cambridge CB2 3QZ (United Kingdom)

2009-08-05T23:59:59.000Z

120

On the differences in the reaction mechanism for CO and CO/H{sub 2} electrooxidation on PtRu and PtSn alloy electrodes  

DOE Green Energy (OSTI)

Electrooxidation kinetics of mixtures of carbon monoxide and hydrogen were studied on well-characterized surfaces of Pt and alloys of PtRu and PtSn in 0.5 M H{sub 2}SO{sub 4} at room temperature and 60 C. The alloy electrode surfaces were prepared in UHV by sputter/anneal cycles and their surface compositions were determined via low energy ion scattering. Subsequently, the electrodes were transferred contamination-free from UHV into a rotating disk electrode (RDE) configuration in a conventional electrochemical cell and their activity was measured both by CO stripping voltammetry and under the continuous flow of CO and CO/H{sub 2} gas mixtures in RDE-experiments. The overpotential for the continuous oxidation of pure CO on PtSn electrodes with a Sn surface composition of x{sub Sn,s} {approximately} 0.2 is significantly smaller than on PtRu alloys (x{sub Ru,s} {approximately} 0.5) and on pure Pt. The reaction order with respect to solution phase CO is negative on PtRu alloys due to the competition between OH{sub ads} nucleation and CO adsorption on Ru surface atoms. Owing to the lack of CO adsorption on OH{sub ads}-providing Sn surface atoms, the reaction order with respect to CO is positive on PtSn electrodes. Therefore, the activity enhancement of PtSn electrodes versus PtRu and Pt electrodes is most pronounced in pure CO and decreases with the CO concentration in CO/N{sub 2} and CO/H{sub 2} mixtures.

Gasteiger, H.A. [Univ. Ulm (Germany). Abteilung Oberflaechenchemie und Katalyse; Markovic, N.M.; Ross, P.N. Jr. [Lawrence Berkeley National Lab., CA (United States)

1997-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "fe ru os" 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

V-069: BlackBerry Tablet OS Adobe Flash Player and Samba Multiple  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

9: BlackBerry Tablet OS Adobe Flash Player and Samba Multiple 9: BlackBerry Tablet OS Adobe Flash Player and Samba Multiple Vulnerabilities V-069: BlackBerry Tablet OS Adobe Flash Player and Samba Multiple Vulnerabilities January 15, 2013 - 4:00am Addthis PROBLEM: BlackBerry Tablet OS Adobe Flash Player and Samba Multiple Vulnerabilities PLATFORM: BlackBerry Tablet Software versions 2.1.0.1032 and prior. ABSTRACT: Multiple vulnerabilities have been reported in BlackBerry Tablet OS REFERENCE LINKS: BlackBerry Knowledge Base Article ID: KB32019 BlackBerry Knowledge Base Article ID: KB32189 Secunia Advisory SA51830 CVE-2012-1182 CVE-2012-1535 CVE-2012-2034 CVE-2012-2037 CVE-2012-4163 CVE-2012-4165 CVE-2012-4166 CVE-2012-4167 IMPACT ASSESSMENT: High DISCUSSION: Multiple vulnerabilities have been reported in BlackBerry Tablet OS, which

122

V-015: Apple iOS Bugs Let Remote Users Execute Arbitrary Code, Local Users  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

5: Apple iOS Bugs Let Remote Users Execute Arbitrary Code, 5: Apple iOS Bugs Let Remote Users Execute Arbitrary Code, Local Users Bypass the Screen Lock, and Applications Obtain Kernel Address Information V-015: Apple iOS Bugs Let Remote Users Execute Arbitrary Code, Local Users Bypass the Screen Lock, and Applications Obtain Kernel Address Information November 2, 2012 - 6:00am Addthis PROBLEM: Apple iOS Bugs Let Remote Users Execute Arbitrary Code, Local Users Bypass the Screen Lock, and Applications Obtain Kernel Address Information PLATFORM: Apple iOS prior to 6.0.1 ABSTRACT: Three vulnerabilities were reported in Apple iOS. REFERENCE LINKS: Apple Article: HT5567 SecurityTracker Alert ID: 1027716 Bugtraq ID: 56363 CVE-2012-3748 CVE-2012-3749 CVE-2012-3750 IMPACT ASSESSMENT: High DISCUSSION: A remote user can create specially crafted HTML that, when loaded by the

123

T-676: Apple iOS Certificate Chain Validation Flaw Lets Certain Remote  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

6: Apple iOS Certificate Chain Validation Flaw Lets Certain 6: Apple iOS Certificate Chain Validation Flaw Lets Certain Remote Users Access or Modify SSL/TLS Sessions T-676: Apple iOS Certificate Chain Validation Flaw Lets Certain Remote Users Access or Modify SSL/TLS Sessions July 26, 2011 - 1:06am Addthis PROBLEM: A vulnerability was reported in Apple iOS. A remote user with the ability to conduct a man-in-the-middle attack can access or modify SSL/TLS sessions. PLATFORM: iOS 4.2.5 through 4.2.9 for iPhone 4 (CDMA) iOS 3.0 through 4.3.4 for iPhone 3GS and iPhone 4 (GSM) iOS 3.1 through 4.3.4 for iPod touch (3rd generation) and later iOS 3.2 through 4.3.4 for iPad ABSTRACT: Apple iOS Certificate Chain Validation Flaw Lets Certain Remote Users Access or Modify SSL/TLS Sessions. reference LINKS: SecurityTracker Alert ID: 1025837

124

V-080: Apple iOS Multiple Vulnerabilities | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

0: Apple iOS Multiple Vulnerabilities 0: Apple iOS Multiple Vulnerabilities V-080: Apple iOS Multiple Vulnerabilities January 30, 2013 - 12:56am Addthis PROBLEM: Apple iOS Multiple Vulnerabilities PLATFORM: Apple iOS 6.x for iPhone 3GS and later Apple iOS for iPad 6.x Apple iOS for iPod touch 6.x ABSTRACT: Two security issues and multiple vulnerabilities have been reported in Apple iOS REFERENCE LINKS: Article: HT5642 APPLE-SA-2013-01-28-1 iOS 6.1 Software Update Secunia Advisory SA52002 CVE-2011-3058 CVE-2012-2619 CVE-2012-2824 CVE-2012-2857 CVE-2012-2889 CVE-2012-3606 CVE-2012-3607 CVE-2012-3621 CVE-2012-3632 CVE-2012-3687 CVE-2012-3701 CVE-2013-0948 CVE-2013-0949 CVE-2013-0950 CVE-2013-0951 CVE-2013-0952 CVE-2013-0953 CVE-2013-0954 CVE-2013-0955 CVE-2013-0956 CVE-2013-0958 CVE-2013-0959 CVE-2013-0962 CVE-2013-0963 CVE-2013-0964

125

T-676: Apple iOS Certificate Chain Validation Flaw Lets Certain Remote  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

76: Apple iOS Certificate Chain Validation Flaw Lets Certain 76: Apple iOS Certificate Chain Validation Flaw Lets Certain Remote Users Access or Modify SSL/TLS Sessions T-676: Apple iOS Certificate Chain Validation Flaw Lets Certain Remote Users Access or Modify SSL/TLS Sessions July 26, 2011 - 1:06am Addthis PROBLEM: A vulnerability was reported in Apple iOS. A remote user with the ability to conduct a man-in-the-middle attack can access or modify SSL/TLS sessions. PLATFORM: iOS 4.2.5 through 4.2.9 for iPhone 4 (CDMA) iOS 3.0 through 4.3.4 for iPhone 3GS and iPhone 4 (GSM) iOS 3.1 through 4.3.4 for iPod touch (3rd generation) and later iOS 3.2 through 4.3.4 for iPad ABSTRACT: Apple iOS Certificate Chain Validation Flaw Lets Certain Remote Users Access or Modify SSL/TLS Sessions. reference LINKS: SecurityTracker Alert ID: 1025837

126

Inactivation of OsIRX10 leads to decreased xylan content in ...  

Inactivation of OsIRX10 leads to decreased xylan content in rice culm cell walls and improved ... We subjected destarched AIR samples to hot water ...

127

User Interfaces in iOS and Windows Phone: a comparison.  

E-Print Network (OSTI)

??This term paper contains a comparison between iOS and Windows Phone, regarding especially the user interface. Chapter 1 deals with a brief description of the… (more)

Gandin, Silvia

2013-01-01T23:59:59.000Z

128

Interactions of hydrogen with alkali promoted Ru/SiO{sub 2} catalysts: A proton NMR study  

DOE Green Energy (OSTI)

Role of H spillover to the silica support was studied using chemisorption; a strongly bound component of spilled over H was found in the silica support which interfered with accurate measurements of active metal sites via volumetric strong H chemisorption. The volumetric chemisorption technique was modified so that measurement times were reduced from 12--36 h to 1 h. The active Ru surface was characterized means of changes in proton spin counts and NMR Knight shifts vs alkali loading. Na, K blocked the active surface of Ru metal, but Cs was pushed off by H chemisorption. The alkali promoters restricted H mobility on both metal surface and at the metal support interfaces; this is consistent with effects on Fischer-Tropsch synthesis. {sup 1}H NMR was used to study the effect of the active metal and promoter on support hydroxyl groups. The OH group density in the silica support decreased with metal and/or promoter loading, but not on a one-to-one basis; the exchange efficiency of the hydroxyls decreased with atomic size of the alkali metal. An additional downfield proton resonance was detected which was assigned to the alkali hydroxide species in the support.

Ozbay, U.D.

1994-05-10T23:59:59.000Z

129

Fe  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

An Assessment of Analytical An Assessment of Analytical Capabilities, Services, and Tools for Demand Response Prepared for the National Forum on the National Action Plan on Demand Response: Estimation Tools and Methods Working Group AUTHORS: Andrew Satchwell and Charles Goldman-Lawrence Berkeley National Laboratory Hossein Haeri and Mark Lesiw-The Cadmus Group, Inc. National Forum of the National Action Plan on Demand Response An Assessment of Analytical Capabilities, Services, and Tools for Demand Response was developed to fulfill part of the Implementation Proposal for The National Action Plan on Demand Response, a report to Congress jointly issued by the U.S. Department of Energy (DOE) and the Federal Energy Regulatory Commission (FERC) in June 2011. Part of that implementation proposal called for a "National Forum" on demand response to be

130

Fe  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Progress Progress Energy Carolinas-Bob Donaldson Prepared for the National Forum on the National Action Plan on Demand Response: Program Design and Implementation Working Group AUTHOR: Dan Delurey-Association for Demand Response and Smart Grid National Forum of the National Action Plan on Demand Response Case Study Interview: Progress Energy Carolinas-Bob Donaldson was developed to fulfill part of the Implementation Proposal for The National Action Plan on Demand Response, a report to Congress jointly issued by the U.S. Department of Energy (DOE) and the Federal Energy Regulatory Commission (FERC) in June 2011. Part of that implementation proposal called for a "National Forum" on demand response to be conducted by DOE and FERC. Given the rapid development of the demand response industry, DOE and FERC decided

131

Fe  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Con Con Edison-Col Smart Prepared for the National Forum on the National Action Plan on Demand Response: Program Design and Implementation Working Group AUTHOR: Dan Delurey-Association for Demand Response and Smart Grid National Forum of the National Action Plan on Demand Response Case Study Interview: Con Edison-Col Smart was developed to fulfill part of the Implementation Proposal for The National Action Plan on Demand Response, a report to Congress jointly issued by the U.S. Department of Energy (DOE) and the Federal Energy Regulatory Commission (FERC) in June 2011. Part of that implementation proposal called for a "National Forum" on demand response to be conducted by DOE and FERC. Given the rapid development of the demand response industry, DOE and FERC decided

132

Fe  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Gulf Gulf Power-David Eggart Prepared for the National Forum on the National Action Plan on Demand Response: Program Design and Implementation Working Group AUTHOR: Dan Delurey-Association for Demand Response and Smart Grid National Forum of the National Action Plan on Demand Response Case Study Interview: Gulf Power-David Eggart was developed to fulfill part of the Implementation Proposal for The National Action Plan on Demand Response, a report to Congress jointly issued by the U.S. Department of Energy (DOE) and the Federal Energy Regulatory Commission (FERC) in June 2011. Part of that implementation proposal called for a "National Forum" on demand response to be conducted by DOE and FERC. Given the rapid development of the demand response industry, DOE and FERC decided

133

Fe  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

PJM PJM Interconnection-Pete Langbein Prepared for the National Forum on the National Action Plan on Demand Response: Program Design and Implementation Working Group AUTHOR: Dan Delurey-Association for Demand Response and Smart Grid National Forum of the National Action Plan on Demand Response Case Study Interview: PJM Interconnection-Pete Langbein was developed to fulfill part of the Implementation Proposal for The National Action Plan on Demand Response, a report to Congress jointly issued by the U.S. Department of Energy (DOE) and the Federal Energy Regulatory Commission (FERC) in June 2011. Part of that implementation proposal called for a "National Forum" on demand response to be conducted by DOE and FERC. Given the rapid development of the demand response industry, DOE and FERC decided

134

Fe  

NLE Websites -- All DOE Office Websites (Extended Search)

An Assessment of Analytical An Assessment of Analytical Capabilities, Services, and Tools for Demand Response Prepared for the National Forum on the National Action Plan on Demand Response: Estimation Tools and Methods Working Group AUTHORS: Andrew Satchwell and Charles Goldman-Lawrence Berkeley National Laboratory Hossein Haeri and Mark Lesiw-The Cadmus Group, Inc. National Forum of the National Action Plan on Demand Response An Assessment of Analytical Capabilities, Services, and Tools for Demand Response was developed to fulfill part of the Implementation Proposal for The National Action Plan on Demand Response, a report to Congress jointly issued by the U.S. Department of Energy (DOE) and the Federal Energy Regulatory Commission (FERC) in June 2011. Part of that implementation proposal called for a "National Forum" on demand response to be

135

Fe  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Southern Southern California Edison-Paul Kasick Prepared for the National Forum on the National Action Plan on Demand Response: Program Design and Implementation Working Group AUTHOR: Dan Delurey-Association for Demand Response and Smart Grid National Forum of the National Action Plan on Demand Response Case Study Interview: Southern California Edison-Paul Kasick was developed to fulfill part of the Implementation Proposal for The National Action Plan on Demand Response, a report to Congress jointly issued by the U.S. Department of Energy (DOE) and the Federal Energy Regulatory Commission (FERC) in June 2011. Part of that implementation proposal called for a "National Forum" on demand response to be conducted by DOE and FERC. Given the rapid development of the demand response industry, DOE and FERC decided

136

Fe  

NLE Websites -- All DOE Office Websites (Extended Search)

program focus on the distribution system. Then there's also NYPA, which is the New York Power Authority, which supplies energy to all of the state government buildings, and they...

137

Fe  

NLE Websites -- All DOE Office Websites (Extended Search)

and they can do something different during an event day. For those customers that aren't home or don't have any usage during that period of time, PTR is really not going to be a...

138

Fe  

NLE Websites -- All DOE Office Websites (Extended Search)

think we all wanted to start with this belief that every single interval for every single home would have a well-qualified usage figure, and that we could grab that data and bill...

139

Fe  

NLE Websites -- All DOE Office Websites (Extended Search)

Working Group AUTHOR: Dan Delurey-Association for Demand Response and Smart Grid National Forum of the National Action Plan on Demand Response Case Study Interview: PJM...

140

Fe  

NLE Websites -- All DOE Office Websites (Extended Search)

Working Group AUTHOR: Dan Delurey-Association for Demand Response and Smart Grid National Forum of the National Action Plan on Demand Response Case Study Interview:...

Note: This page contains sample records for the topic "fe ru os" 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

Fe  

NLE Websites -- All DOE Office Websites (Extended Search)

on Demand Response, a report to Congress jointly issued by the U.S. Department of Energy (DOE) and the Federal Energy Regulatory Commission (FERC) in June 2011. Part of that...

142

Fe  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Reliant Reliant Energy-Bill Harmon Prepared for the National Forum on the National Action Plan on Demand Response: Program Design and Implementation Working Group AUTHOR: Dan Delurey-Association for Demand Response and Smart Grid National Forum of the National Action Plan on Demand Response Case Study Interview: Reliant Energy-Bill Harmon was developed to fulfill part of the Implementation Proposal for The National Action Plan on Demand Response, a report to Congress jointly issued by the U.S. Department of Energy (DOE) and the Federal Energy Regulatory Commission (FERC) in June 2011. Part of that implementation proposal called for a "National Forum" on demand response to be conducted by DOE and FERC. Given the rapid development of the demand response industry, DOE and FERC decided

143

Fe  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

A Framework for Evaluating the A Framework for Evaluating the Cost-Effectiveness of Demand Response Prepared for the National Forum on the National Action Plan on Demand Response: Cost-effectiveness Working Group AUTHORS: Tim Woolf & Erin Malone-Synapse Energy Economics Lisa Schwartz & John Shenot-Regulatory Assistance Project National Forum of the National Action Plan on Demand Response A Framework for Evaluating the Cost-Effectiveness of Demand Response was developed to fulfill part of the Implementation Proposal for The National Action Plan on Demand Response, a report to Congress jointly issued by the U.S. Department of Energy (DOE) and the Federal Energy Regulatory Commission (FERC) in June 2011. Part of that implementation proposal called for a "National Forum" on demand response to be

144

Fe  

NLE Websites -- All DOE Office Websites (Extended Search)

Gulf Power-David Eggart Prepared for the National Forum on the National Action Plan on Demand Response: Program Design and Implementation Working Group AUTHOR: Dan...

145

Underwater Explosive Shock Consolidation of Nanocomposite Pr2Fe14B/-Fe Magnetic Powders  

E-Print Network (OSTI)

PR O O FS Underwater Explosive Shock Consolidation of Nanocomposite Pr2Fe14B/-Fe Magnetic Powders; Accepted January 6, 2005) Keywords: explosive compaction, underwater shock wave, nanocomposites, magnetic

Liu, J. Ping

146

Stabilization of Chromium-Based Slags with FeS2 and FeSO4  

Science Conference Proceedings (OSTI)

Selective Recovery of Gold from E-wastes by Using Cellulosic Wastes · Stabilization of Chromium-Based Slags with FeS2 and FeSO4 · Sulphide Precipitation ...

147

Coupled Fe(II)-Fe(III) Electron and Atom Exchange as a Mechanism for  

E-Print Network (OSTI)

Coupled Fe(II)-Fe(III) Electron and Atom Exchange as a Mechanism for Fe Isotope Fractionation I C E . R O D E N , A N D B R I A N L . B E A R D Department of Geology and Geophysics, University (DIR) is an important pathway for carbon oxidation in anoxic sediments, and iron isotopes may

Roden, Eric E.

148

U-036: Apple iOS Bugs Let Remote Users Execute Arbitrary Code | Department  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

6: Apple iOS Bugs Let Remote Users Execute Arbitrary Code 6: Apple iOS Bugs Let Remote Users Execute Arbitrary Code U-036: Apple iOS Bugs Let Remote Users Execute Arbitrary Code November 15, 2011 - 8:00am Addthis PROBLEM: Apple iOS Bugs Let Remote Users Execute Arbitrary Code and Obtain Information and Let Local Users Bypass Authentication. PLATFORM: iOS 3.0 through 5.0 for iPhone 3GS iPhone 4 and iPhone 4S iOS 3.1 through 5.0 for iPod touch (3rd generation) and later iOS 3.2 through 5.0 for iPad, iOS 4.3 through 5.0 for iPad 2 ABSTRACT: A remote user can create content that, when loaded by the target user, will execute arbitrary code on or obtain potentially sensitive information from the target user's system. reference LINKS: Apple Security Article: HT5052 Apple Product Security SecurityTracker Alert ID: 1026311 IMPACT ASSESSMENT:

149

T-634: Apple Mac OS X MacDefender Fake Antivirus Malicious Software |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

34: Apple Mac OS X MacDefender Fake Antivirus Malicious Software 34: Apple Mac OS X MacDefender Fake Antivirus Malicious Software T-634: Apple Mac OS X MacDefender Fake Antivirus Malicious Software June 1, 2011 - 3:35pm Addthis PROBLEM: Apple Mac OS X versions 10.4, 10.5, and 10.6 are the targets of a new campaign of phishing attacks that aim to infect systems with a fake antivirus application called MacDefender. PLATFORM: Mac OS X 10.4, Mac OS X 10.6, Mac OS X 10.5 ABSTRACT: Apple Mac OS X users could infect their systems after visiting a malicious web page. Reports suggest that the Apple Safari web browser could allow automatic download and execution of the JavaScript-based malware because of an incorrectly set security option in Safari. reference LINKS: Security Article: HT4650 IntelliShield ID: 23239 Apple Insider Article

150

Collaborative Sharing of Windows between MacOS X, the X Window System and Windows  

E-Print Network (OSTI)

Collaborative Sharing of Windows between MacOS X, the X Window System and Windows Daniel Stødle This paper investigates how one best can share windows between many different computers in a collaborative application. We present an architecture of a system allowing windows on MacOS X to be shared with computers

Bjørndalen, John Markus

151

U-107: Cisco NX-OS IP Packet Processing Flaw Lets Remote Users Deny Service  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

07: Cisco NX-OS IP Packet Processing Flaw Lets Remote Users Deny 07: Cisco NX-OS IP Packet Processing Flaw Lets Remote Users Deny Service U-107: Cisco NX-OS IP Packet Processing Flaw Lets Remote Users Deny Service February 21, 2012 - 6:00am Addthis PROBLEM: A vulnerability was reported in Cisco NX-OS. A remote user can cause denial of service conditions. PLATFORM: Nexus 1000v, 5000, and 7000 Series Switches ABSTRACT: A remote user can send a specially crafted IP packet to cause the target device to reload. reference LINKS: Cisco Advisory SecurityTracker Alert ID:1026692 CVE-2012-0352 IMPACT ASSESSMENT: Medium Discussion: A vulnerability was reported in Cisco NX-OS. A remote user can cause denial of service conditions. A remote user can send a specially crafted IP packet to cause the target device to reload. The vulnerability occurs when the device attepts to obtain Layer 4 (e.g.,

152

V-191: Apple Mac OS X Multiple Vulnerabilities | Department of Energy  

NLE Websites -- All DOE Office Websites (Extended Search)

1: Apple Mac OS X Multiple Vulnerabilities 1: Apple Mac OS X Multiple Vulnerabilities V-191: Apple Mac OS X Multiple Vulnerabilities July 3, 2013 - 6:00am Addthis PROBLEM: Apple has issued a security update for Mac OS X PLATFORM: Apple Macintosh OS X ABSTRACT: The vulnerabilities are caused due to a bundled version of QuickTime REFERENCE LINKS: Secunia Advisory SA54049 APPLE-SA-2013-07-02-1 Security Update 2013-003 CVE-2013-1018 CVE-2013-1019 CVE-2013-1022 IMPACT ASSESSMENT: High DISCUSSION: A boundary error when parsing compressed data within H.264 encoded movie files can be exploited to cause a buffer overflow A boundary error when handling the Sorenson Video 3 "mdat" section within a MOV file can be exploited to cause a buffer overflow A boundary error when handling "mvhd" atoms can be exploited to cause a

153

V-191: Apple Mac OS X Multiple Vulnerabilities | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

1: Apple Mac OS X Multiple Vulnerabilities 1: Apple Mac OS X Multiple Vulnerabilities V-191: Apple Mac OS X Multiple Vulnerabilities July 3, 2013 - 6:00am Addthis PROBLEM: Apple has issued a security update for Mac OS X PLATFORM: Apple Macintosh OS X ABSTRACT: The vulnerabilities are caused due to a bundled version of QuickTime REFERENCE LINKS: Secunia Advisory SA54049 APPLE-SA-2013-07-02-1 Security Update 2013-003 CVE-2013-1018 CVE-2013-1019 CVE-2013-1022 IMPACT ASSESSMENT: High DISCUSSION: A boundary error when parsing compressed data within H.264 encoded movie files can be exploited to cause a buffer overflow A boundary error when handling the Sorenson Video 3 "mdat" section within a MOV file can be exploited to cause a buffer overflow A boundary error when handling "mvhd" atoms can be exploited to cause a

154

U-228: BlackBerry Tablet OS Flash Player Multiple Vulnerabilities |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

8: BlackBerry Tablet OS Flash Player Multiple Vulnerabilities 8: BlackBerry Tablet OS Flash Player Multiple Vulnerabilities U-228: BlackBerry Tablet OS Flash Player Multiple Vulnerabilities August 6, 2012 - 7:00am Addthis PROBLEM: BlackBerry Tablet OS Flash Player Multiple Vulnerabilities PLATFORM: Adobe Flash Player versions included with BlackBerry PlayBook tablet software versions 2.0.1.358 and earlier. ABSTRACT: Vulnerabilities in Adobe Flash Player version included with the BlackBerry PlayBook tablet software reference LINKS: BlackBerry Article ID: KB31675 Secunia Advisory SA50164 CVE-2012-0752 CVE-2012-0753 CVE-2012-0754 CVE-2012-0755 CVE-2012-0756 CVE-2012-0767 CVE-2012-0768 CVE-2012-0769 CVE-2012-0773 CVE-2012-0779 IMPACT ASSESSMENT: High Discussion: Multiple vulnerabilities have been reported in BlackBerry Tablet OS, which

155

Modulation of the Folding Energy Landscape of Cytochrome c with Salt Shi Zhong, Denis L. Rousseau,* and Syun-Ru Yeh*  

E-Print Network (OSTI)

,* and Syun-Ru Yeh* Department of Physiology and Biophysics, Albert Einstein College of Medicine, Bronx, New chain is unfolded. The Met80 ligand can be replaced either by a solvent water molecule, leading to a water-His bound state (HW), or by His26/33, leading to a bis-His state (HH).1,2,4,7 Under acidic

Yeh, Syun-Ru

156

Giant magnetoresistive structures based on CrO{sub 2} with epitaxial RuO{sub 2} as the spacer layer  

Science Conference Proceedings (OSTI)

Epitaxial ruthenium dioxide (RuO{sub 2})/chromium dioxide(CrO{sub 2}) thin film heterostructures have been grown on (100)-TiO{sub 2} substrates by chemical vapor deposition. Both current-in-plane (CIP) and current-perpendicular-to-plane (CPP) giant magnetoresistive stacks were fabricated with either Co or another epitaxial CrO{sub 2} layer as the top electrode. The Cr{sub 2}O{sub 3} barrier, which forms naturally on CrO{sub 2} surfaces, is no longer present after the RuO{sub 2} deposition, resulting in a highly conductive interface that has a resistance at least four orders of magnitude lower. However, only very limited magnetoresistance (MR) was observed. Such low MR is due to the appearance of a chemically and magnetically disordered layer at the CrO{sub 2} and RuO{sub 2} interfaces when Cr{sub 2}O{sub 3} is transformed into rutile structures during its intermixing with RuO{sub 2}.

Miao, G.X.; Gupta, A.; Sims, H.; Butler, W.H.; Ghosh, S.; Xiao Gang [Physics Department, Brown University, Providence, Rhode Island 02912 (United States); Center for Materials for Information Technology, University of Alabama, Tuscaloosa, Alabama 35487 (United States); Department of Electrical and Computer Engineering, University of Illinois, Chicago, Illinois 60607 (United States); Physics Department, Brown University, Providence, Rhode Island 02912 (United States)

2005-05-15T23:59:59.000Z

157

Excited State Dynamics of Two New Ru(II) Cyclometallated Dyes: Relation to Cells for Solar Energy Conversion and Comparison to  

E-Print Network (OSTI)

Excited State Dynamics of Two New Ru(II) Cyclometallated Dyes: Relation to Cells for Solar Energy, are reported. Related complexes have been used as efficient dyes in dye- sensitized solar cells (DSSCs of ruthenium dyes used in DSSCs to lower energies, it is evident from this work, that for cyclometallated phpy

Turro, Claudia

158

InP:Fe Photoconducting device  

SciTech Connect

A photoconducting device fabricated from Fe-doped, semi-insulating InP crystals exhibits an exponential decay transient with decay time inversely related to Fe concentration. Photoconductive gain as high as 5 is demonstrated in photoconducting devices with AuGe and AuSn contacts. Response times from 150 to 1000 picoseconds can be achieved.

Hammond, Robert B. (Los Alamos, NM); Paulter, Nicholas G. (Albuquerque, NM); Wagner, Ronald S. (Los Alamos, NM)

1984-01-01T23:59:59.000Z

159

Support Defined Novel Catalyst for Enhanced Fischer-Tropsch Activity.  

E-Print Network (OSTI)

??Four distinct Fisher-Tropsch catalysts were prepared through the incipient wetness technique. These catalysts were Fe-Zn-Ru/alumina, Fe-Zn-Ru/K/alumina, Fe-Zn-Ru/silica, and Fe-Zn-Ru/K/silica. The physical characterization of the catalysts… (more)

Lievers, Ashley Ann

2009-01-01T23:59:59.000Z

160

U-264: Apple OS X Lets Remote Users Execute Arbitrary Code and Local Users  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

4: Apple OS X Lets Remote Users Execute Arbitrary Code and 4: Apple OS X Lets Remote Users Execute Arbitrary Code and Local Users Gain Elevated Privileges U-264: Apple OS X Lets Remote Users Execute Arbitrary Code and Local Users Gain Elevated Privileges September 20, 2012 - 6:00am Addthis U-264: Apple OS X Lets Remote Users Execute Arbitrary Code and Local Users Gain Elevated Privileges September 20, 2012 - 6:00am PROBLEM: Apple OS X Lets Remote Users Execute Arbitrary Code and Local Users Gain Elevated Privileges PLATFORM: Apple OS X ABSTRACT: Several vulnerabilities were reported in Apple OS X. reference LINKS: Apple Security Article: HT5501 SecurityTracker Alert ID: 1027551 CVE-2012-0650 CVE-2012-3716 CVE-2012-3718 CVE-2012-3719 CVE-2012-3720 CVE-2012-3721 CVE-2012-3722 CVE-2012-3723 IMPACT ASSESSMENT: Medium Discussion: If the DirectoryService Proxy is used, a remote user can trigger a buffer

Note: This page contains sample records for the topic "fe ru os" 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

V-165: Cisco WebEx for iOS Certificate Validation Flaw Lets Remote Users  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

65: Cisco WebEx for iOS Certificate Validation Flaw Lets Remote 65: Cisco WebEx for iOS Certificate Validation Flaw Lets Remote Users Spoof the Server V-165: Cisco WebEx for iOS Certificate Validation Flaw Lets Remote Users Spoof the Server May 28, 2013 - 12:46am Addthis PROBLEM: Cisco WebEx for iOS Certificate Validation Flaw Lets Remote Users Spoof the Server PLATFORM: Cisco WebEx for iOS 4.1, Other versions may also be affected. ABSTRACT: A vulnerability was reported in Cisco WebEx for iOS. REFERENCE LINKS: Cisco SecurityTracker Alert ID: 1028592 Secunia Advisory SA51412 CVE-2012-6399 IMPACT ASSESSMENT: Medium DISCUSSION: A security issue in Cisco WebEx for iOS can be exploited by malicious people to conduct spoofing attacks. The security issue is caused due to the application not properly verifying the server SSL certificate. This can be exploited to e.g. spoof the server

162

U-264: Apple OS X Lets Remote Users Execute Arbitrary Code and Local Users  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

4: Apple OS X Lets Remote Users Execute Arbitrary Code and 4: Apple OS X Lets Remote Users Execute Arbitrary Code and Local Users Gain Elevated Privileges U-264: Apple OS X Lets Remote Users Execute Arbitrary Code and Local Users Gain Elevated Privileges September 20, 2012 - 6:00am Addthis U-264: Apple OS X Lets Remote Users Execute Arbitrary Code and Local Users Gain Elevated Privileges September 20, 2012 - 6:00am PROBLEM: Apple OS X Lets Remote Users Execute Arbitrary Code and Local Users Gain Elevated Privileges PLATFORM: Apple OS X ABSTRACT: Several vulnerabilities were reported in Apple OS X. reference LINKS: Apple Security Article: HT5501 SecurityTracker Alert ID: 1027551 CVE-2012-0650 CVE-2012-3716 CVE-2012-3718 CVE-2012-3719 CVE-2012-3720 CVE-2012-3721 CVE-2012-3722 CVE-2012-3723 IMPACT ASSESSMENT: Medium Discussion: If the DirectoryService Proxy is used, a remote user can trigger a buffer

163

Determination of the spin-flip time in ferromagnetic SrRuO3 from time-resolved Kerr measurements  

SciTech Connect

We report time-resolved Kerr effect measurements of magnetization dynamics in ferromagnetic SrRuO{sub 3}. We observe that the demagnetization time slows substantially at temperatures within 15K of the Curie temperature, which is {approx} 150K. We analyze the data with a phenomenological model that relates the demagnetization time to the spin flip time. In agreement with our observations the model yields a demagnetization time that is inversely proportional to T-T{sub c}. We also make a direct comparison of the spin flip rate and the Gilbert damping coefficient showing that their ratio very close to k{sub B}T{sub c}, indicating a common origin for these phenomena.

Kantner, C.L.S.; Langner, M.C.; Siemons, W.; Blok, J.L.; Koster, G.; Rijnders, A.J.H.M.; Ramesh, R.; Orenstein, J.

2010-07-30T23:59:59.000Z

164

Annual Planning Summaries: Fossil Energy (FE) | Department of...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Fossil Energy (FE) Annual Planning Summaries: Fossil Energy (FE) Document(s) Available For Download January 31, 2012 2012 Annual Planning Summary for Fossil Energy, National Energy...

165

Re^Os evidence for replacement of ancient mantle lithosphere beneath the North China craton  

E-Print Network (OSTI)

^Os data for peridotite xenoliths carried in Paleozoic kimberlites and Tertiary alkali basalts confirm, coupled with the presence of cold, refractory mantle xenoliths carried in kimberlite pipes that erupt

Mcdonough, William F.

166

Phase transformation of Mg-Fe alloys  

SciTech Connect

An Mg-Fe alloy system prepared through mechanical alloying (MA) was structurally analyzed. MA can produce single-phase bcc alloys using Mg concentrations up to about 15 mol %. Use of conventional average structure analysis and x-ray pair-distribution function method enabled the long-range and short-range order structures of the Mg-Fe alloys to be bridged. The substituted Mg atoms were randomly arranged in the low-Mg composition but started to have an order structure. The partially ordered Mg-Fe alloy undergoes an austenitic (cubic) to martensitic (orthorhombic) phase change, as increasing Mg composition.

Yoneda, Yasuhiro [Synchrotron Radiation Research Unit, Japan Atomic Energy Agency, 1-1-1 Kouto, Sayo-cho Sayo-gun, Hyogo 679-5148 (Japan); Abe, Hiroshi; Ohshima, Takeshi [Department of Material development, Japan Atomic Energy Agency, 1233 Watanuki, Takasaki, Gunma 370-1292 (Japan); Uchida, Hirohisa [Department of Applied Physics, Graduate and Undergraduate Schools of Engineering, Tokai University, 1117 Kitakaname, Hiratsuka, Kanagawa 259-1292 (Japan)

2010-05-15T23:59:59.000Z

167

V-158: BlackBerry Tablet OS Flash Player Multiple Vulnerabilities |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

8: BlackBerry Tablet OS Flash Player Multiple Vulnerabilities 8: BlackBerry Tablet OS Flash Player Multiple Vulnerabilities V-158: BlackBerry Tablet OS Flash Player Multiple Vulnerabilities May 17, 2013 - 6:00am Addthis PROBLEM: Multiple vulnerabilities have been reported in BlackBerry Tablet OS PLATFORM: BlackBerry Tablet OS 2.x ABSTRACT: Multiple vulnerabilities have been reported in BlackBerry Tablet OS, which can be exploited by malicious people to bypass certain security restrictions and compromise a user's system. REFERENCE LINKS: Secunia Advisory SA53453 Blackberry Security Advisory KB34161 CVE-2012-5248 CVE-2012-5249 CVE-2012-5250 CVE-2012-5251 CVE-2012-5252 CVE-2012-5253 CVE-2012-5254 CVE-2012-5255 CVE-2012-5256 CVE-2012-5257 CVE-2012-5258 CVE-2012-5259 CVE-2012-5260 CVE-2012-5261 CVE-2012-5262 CVE-2012-5263 CVE-2012-5264 CVE-2012-5265

168

Isonitrile radionuclide complexes for labelling and imaging agents  

DOE Patents (OSTI)

A coordination complex of an isonitrile ligand and radionuclide such as Tc, Ru, Co, Pt, Fe, Os, Ir, W, Re, Cr, Mo, Mn, Ni, Rh, Pd, Nb and Ta, is useful as a diagnostic agent for labelling liposomes or vesicles, and selected living cells containing lipid membranes, such as blood clots, myocardial tissue, gall bladder tissue, etc.

Jones, Alun G. (Newton Centre, MA); Davison, Alan (Needham, MA); Abrams, Michael J. (Allston, MA)

1984-06-04T23:59:59.000Z

169

FE - Fossil Energy - Energy Conservation Plan  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

(1) (1) Office of Fossil Energy Energy Conservation Plan The Office of Fossil Energy (FE) strongly supports the implementation of strategies to reduce energy consumption in the Headquarters buildings. FE engaged its employees by sending an office-wide email soliciting input for this plan; the ideas were then compiled into this document. The focus of this plan is on how FE employees can change their behavior to reduce energy consumption. This plan purposefully excludes measures that would require any significant capital investment. The measures outlined below in each category can be implemented without much effort and with minimal cost and will reduce the energy used by Fossil Energy employees in the Forrestal and Germantown buildings. FE recognizes that transparency is a key element of a successful energy conservation

170

Through its Clean Coal Research Program, FE  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

its inception as part of DOE in 1977, FE's its inception as part of DOE in 1977, FE's R&D mission has continued to evolve to reflect the nation's key energy supply, security and environmental needs. Coal represents 93 percent of total U.S. fossil fuel reserves and is the largest single source (45 percent) of electricity generation, both currently and projected for the foreseeable future. It also is among the most carbon- intensive energy resources. Continuing the legacy of previous successes in the Clean Coal Technology Development Program, FE R&D today is focusing on ways to continue using this vital source of energy while minimizing atmospheric CO 2 emissions. Through its Clean Coal Research Program, FE is in the forefront of global efforts to develop and

171

Facile Synthesis of a-Fe2O3 Nanorods Derived from a-FeOOH ...  

Science Conference Proceedings (OSTI)

Symposium, Nanostructured Materials for Rechargeable Batteries and Supercapacitors II. Presentation Title, Facile Synthesis of a-Fe2O3 Nanorods Derived ...

172

LaFeCoSi- and GdFeAl-Based Composites with Enhanced ...  

Science Conference Proceedings (OSTI)

Symposium, Magnetic Materials for Energy Applications -III ... Performance and Endurance of Nd-Fe-B Sintered Magnets in E-Motor Application Conditions.

173

The Office of Fossil Energy's (FE) Clean  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Office of Fossil Energy's (FE) Clean Office of Fossil Energy's (FE) Clean Coal Technology Demonstration Program (1986-1993) laid the foundation for effective technologies now in use that have helped significantly lower emissions of sulfur dioxide (SO 2 ), nitrogen oxides (NO x ) and airborne particulates (PM 10 ). The program forged cost-sharing partnerships between the U.S. Department of Energy, industry, universities and technology suppliers and users.

174

Decontamination & Decommissioning/ Facilities Engineering (D&D/FE) |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Decontamination & Decommissioning/ Facilities Engineering (D&D/FE) Decontamination & Decommissioning/ Facilities Engineering (D&D/FE) Decontamination & Decommissioning/ Facilities Engineering (D&D/FE) Decontamination & Decommissioning/ Facilities Engineering (D&D/FE) Decontamination & Decommissioning/ Facilities Engineering (D&D/FE) Decontamination & Decommissioning/ Facilities Engineering (D&D/FE) Decontamination & Decommissioning/ Facilities Engineering (D&D/FE) As the DOE complex sites prepare for closure, a large number of buildings and facilities must be deactivated and decommissioned. These facilities contain many complex systems (e.g. ventilation), miles of contaminated pipelines, glove boxes, and unique processing equipment that require labor intensive deactivation and decommissioning methods. Although

175

T-585: Mac OS X v10.6.7 Security Update 2011-001 | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

85: Mac OS X v10.6.7 Security Update 2011-001 85: Mac OS X v10.6.7 Security Update 2011-001 T-585: Mac OS X v10.6.7 Security Update 2011-001 March 22, 2011 - 2:02pm Addthis PROBLEM: Mac OS X v10.6.7 Security Update 2011-001 PLATFORM: Mac OS X 10.3, Mac OS X 10.4, Mac OS X 10.6, Mac OS X 10.5.(Affected Software and Download Locations) ABSTRACT: Mac OS Update: Mac OS 10.6.7 fixes multiple vulnerabilities in the following release. This update can be installed on non-startup volumes, but you should only do this if the current startup volume has already been updated to Mac OS X Server v10.6.7. The simplest way to avoid issues from an improper installation is to start up from the volume that you wish to update. reference LINKS: APPLE-SA-2011-03-21-1 Mac OS X v10.6.7 About the Mac OS X Server v10.6.7 Update Apple security updates

176

U-165: Apple iOS Bugs Let Remote Users Execute Arbitrary Code and Spoof  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

5: Apple iOS Bugs Let Remote Users Execute Arbitrary Code and 5: Apple iOS Bugs Let Remote Users Execute Arbitrary Code and Spoof Address Bar URLs U-165: Apple iOS Bugs Let Remote Users Execute Arbitrary Code and Spoof Address Bar URLs May 9, 2012 - 7:00am Addthis PROBLEM: Apple iOS Bugs Let Remote Users Execute Arbitrary Code and Spoof Address Bar URLs PLATFORM: prior to 5.1.1; iPhone 3GS, iPhone 4, iPhone 4S, iPod touch (3rd generation) and later, iPad, iPad 2 ABSTRACT: Two vulnerabilities were reported in Apple iOS. A remote user can cause arbitrary code to be executed on the target user's system. A remote user can spoof the address bar URL. reference LINKS: SecurityTracker Alert ID: 1027028 CVE-2012-0672 CVE-2012-0674 IMPACT ASSESSMENT: Medium Discussion: A remote user can create a specially crafted file that, when loaded by the

177

U-165: Apple iOS Bugs Let Remote Users Execute Arbitrary Code and Spoof  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

5: Apple iOS Bugs Let Remote Users Execute Arbitrary Code and 5: Apple iOS Bugs Let Remote Users Execute Arbitrary Code and Spoof Address Bar URLs U-165: Apple iOS Bugs Let Remote Users Execute Arbitrary Code and Spoof Address Bar URLs May 9, 2012 - 7:00am Addthis PROBLEM: Apple iOS Bugs Let Remote Users Execute Arbitrary Code and Spoof Address Bar URLs PLATFORM: prior to 5.1.1; iPhone 3GS, iPhone 4, iPhone 4S, iPod touch (3rd generation) and later, iPad, iPad 2 ABSTRACT: Two vulnerabilities were reported in Apple iOS. A remote user can cause arbitrary code to be executed on the target user's system. A remote user can spoof the address bar URL. reference LINKS: SecurityTracker Alert ID: 1027028 CVE-2012-0672 CVE-2012-0674 IMPACT ASSESSMENT: Medium Discussion: A remote user can create a specially crafted file that, when loaded by the

178

V-115: Apple iOS Bugs Let Local Users Gain Elevated Privileges | Department  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

5: Apple iOS Bugs Let Local Users Gain Elevated Privileges 5: Apple iOS Bugs Let Local Users Gain Elevated Privileges V-115: Apple iOS Bugs Let Local Users Gain Elevated Privileges March 20, 2013 - 12:08am Addthis PROBLEM: Apple iOS Bugs Let Local Users Gain Elevated Privileges PLATFORM: Version(s): prior to 6.1.3 ABSTRACT: Several vulnerabilities were reported in Apple iOS REFERENCE LINKS: Apple security Article: HT1222 SecurityTracker Alert ID: 1028314 CVE-2013-0977 CVE-2013-0978 CVE-2013-0979 CVE-2013-0981 IMPACT ASSESSMENT: High DISCUSSION: A local user can exploit a flaw in the handling of Mach-O executable files with overlapping segments to execute unsigned code on the target system [CVE-2013-0977]. A local user can exploit a flaw in the ARM prefetch abort handling to determine the address of structures in the kernel [CVE-2013-0978].

179

OS X Exploits and Defense: Own it...Just Like Windows or Linux!  

Science Conference Proceedings (OSTI)

Threats to Macintosh's OS X operating system are increasing in sophistication and number. Whether it is the exploitation of an increasing number of holes, use of rootkits for post compromise concealment or distributed denial of service, knowing how the ... Keywords: Security

Paul Baccas; Kevin Finisterre; Larry H.; David Harley; Gary Porteus; Chris Hurley; Johnny Long

2008-04-01T23:59:59.000Z

180

An agent-based workflow system for enterprise based on FIPA-OS framework  

Science Conference Proceedings (OSTI)

The paper describes what we have learned from implementing a multi-agent architecture used to support enterprise notions and principles for intelligent systems design. In the last couple of years, agent-based management systems have been widely used ... Keywords: FIPA-OS, Multi-agent system, Workflow management

Yao Jung Yang; Tien-Wen Sung; Chuni Wu; Hsiang-Yang Chen

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "fe ru os" from the National Library of EnergyBeta (NLEBeta).
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181

Hobbes: composition and virtualization as the foundations of an extreme-scale OS/R  

Science Conference Proceedings (OSTI)

This paper describes our vision for Hobbes, an operating system and runtime (OS/R) framework for extreme-scale systems. The Hobbes design explicitly supports application composition, which is emerging as a key approach for applications to address scalability ... Keywords: application composition, operating system, supercomputing, virtualization

Ron Brightwell, Ron Oldfield, Arthur B. Maccabe, David E. Bernholdt

2013-06-01T23:59:59.000Z

182

ThermOS: system support for dynamic thermal management of chip multi-processors  

Science Conference Proceedings (OSTI)

Constraining the temperature of computing systems has become a dominant aspect in the design of integrated circuits. The supply voltage decrease has lost its pace even though the feature size is shrinking constantly. This results in an increased number ... Keywords: CMP, DTM, OS, chip multi-processor, chip-multiprocessor, dynamic thermal management, multi-core, multicore, operating system

Filippo Sironi, Martina Maggio, Riccardo Cattaneo, Giovanni Francesco Del Nero, Donatella Sciuto, Marco Domenico Santambrogio

2013-10-01T23:59:59.000Z

183

Android and iOS users' differences concerning security and privacy  

Science Conference Proceedings (OSTI)

We compare Android and iOS users according to their demographic differences, security and privacy awareness, and reported behavior when installing apps. We present an exploratory study based on an online survey with more than 700 German students and ... Keywords: android, ios, iphone, personal data, privacy awareness, security awareness, smartphone

Zinaida Benenson; Freya Gassmann; Lena Reinfelder

2013-04-01T23:59:59.000Z

184

FE Clean Energy Group | Open Energy Information  

Open Energy Info (EERE)

FE Clean Energy Group FE Clean Energy Group Jump to: navigation, search Name FE Clean Energy Group Place Darien, Connecticut Zip 6820 Sector Efficiency Product A Private Equity Fund Manager which specializes in investments in energy efficiency and emissions reductions in emerging markets. Coordinates 42.60182°, -88.713134° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":42.60182,"lon":-88.713134,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

185

Non-stoichiometric Fe{sub x}WN{sub 2}: Leaching of Fe from layer-structured FeWN{sub 2}  

SciTech Connect

Non-stoichiometric Fe{sub x}WN{sub 2} (x{approx}0.72) was synthesized via leaching of Fe from layer-structured stoichiometric FeWN{sub 2} by soaking in sulfuric acid at ca. 50 deg. C. The synthesized products were characterized by powder X-ray diffraction (pXRD), secondary electron microscopy (SEM), energy dispersive X-ray analysis (EDX) and magnetic measurements. Non-stoichiometric Fe{sub x}WN{sub 2} has the same symmetry unit cell as stoichiometric FeWN{sub 2} (P6{sub 3}/mmc), but the lattice parameters change: the a-axis expands by 0.16% while the c-axis decreases by 1.5%. Polycrystalline powder of Fe{sub x}WN{sub 2} showed similar morphologies as those of FeWN{sub 2}. The calculated electronic structure of stoichiometric FeWN{sub 2} shows a more ionic-bonding character between Fe and N than that between W and N, which presumably allows for the partial Fe leaching from between the W-N prismatic layers. The magnetic susceptibility of Fe{sub x}WN{sub 2} smoothly decreases with increasing temperature from 3 to 300 K, unlike the broad maximum seen near 27 K in stoichiometric FeWN{sub 2}. - Graphical abstract: Non-stoichiometric Fe{sub x}WN{sub 2} (x{approx}0.72) was synthesized via leaching of Fe from layer-structured stoichiometric FeWN{sub 2} by soaking in sulfuric acid at ca. 50 deg. C.

Miura, Akira; Wen Xiaodong [Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853-1301 (United States); Abe, Hideki [National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047 NIMS (Japan); Yau, Grace [Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853-1301 (United States); DiSalvo, Francis J., E-mail: fjd3@cornell.ed [Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853-1301 (United States)

2010-02-15T23:59:59.000Z

186

Membrane separation advances in FE hydrogen program  

Science Conference Proceedings (OSTI)

Since its inception in Fiscal Year 2003 the US Office of Fossil Energy (FE) Hydrogen from Coal Program has sponsored more than 60 projects and made advances in the science of separating out pure hydrogen from syngas produced through coal gasification. The Program is focusing on advanced hydrogen separation technologies, which include membranes, and combining the WGS reaction and hydrogen separation in a single operation known as process intensification. The article explains the technologies and describes some key FE membrane projects. More details are available from http://www.fossil.energy.gov. 1 fig.

NONE

2007-12-31T23:59:59.000Z

187

Microsoft Word - RMOTC FE EERE release  

NLE Websites -- All DOE Office Websites (Extended Search)

October 9, 2009 The Rocky Mountain Oilfield Testing Center (RMOTC) is providing the following information on local activities: Geothermal Research Initiative at RMOTC (Casper, WY) - The Rocky Mountain Oilfield Testing Center (RMOTC) announces its involvement in a new collaboration between the U.S. Department of Energy's offices of Fossil Energy (FE) and Energy Efficiency and Renewable Energy's (EERE) to demonstrate low-temperature geothermal electrical power generation systems using oilfield fluids produced at the Naval Petroleum Reserve #3 (NPR-3) near Midwest, Wyo. RMOTC, part of FE's Office of Oil and Natural Gas, will work directly with EERE's Geothermal

188

Optimization of Ti addition in Fe for Fe-Ti-N thin films  

Science Conference Proceedings (OSTI)

In this work we studied the magnetic and structural properties of Fe{sub 1-x}Ti{sub x}(x=0, 0.02, 0.05, 0.07) thin films prepared with dc-magnetron sputtering. It was found that the inter-atomic spacing increases as the amount of Ti is increased indicating that Ti is getting dissolved substitutionally in Fe lattice. We found that the addition of 5% Ti is best suited for its usage in Fe-Ti-N alloys.

Tayal, Akhil; Gupta, Mukul; Gupta, Ajay; Stahn, Jochen; Horisberger, M. [UGC-DAE Consortium for Scientific Research, University Campus, Khandwa Road, Indore, 452001 (India); Laboratory for Neutron Scattering, Paul Scherrer Institut, CH-5232 Villigen PSI (Switzerland); Laboratory for Developments and Methods, Paul Scherrer Institut, CH-5232 Villigen PSI (Switzerland)

2012-06-05T23:59:59.000Z

189

Oxygen-Induced Symmetrization and Structural Coherency in Fe/MgO/Fe(001) Magnetic Tunnel Junctions  

Science Conference Proceedings (OSTI)

We present x-ray diffraction experiments and multiple-scattering calculations on the structure and transport properties of a Fe/MgO/Fe(001) magnetic tunnel junction (MTJ). Coherent growth of the top Fe electrode on the MgO spacer is observed only for Fe deposition in ambient oxygen atmosphere leading to a coherent and symmetric MTJ structure characterized by FeO layers at both Fe/MgO interfaces. This goes in parallel with calculations indicating large positive tunnel magnetoresistance (TMR) values in such symmetric junctions. The results have important implications for achieving giant TMR values.

Tusche, C.; Meyerheim, H.L.; Ernst, A.; Henk, J.; Bruno, P.; Kirschner, J. [Max-Planck-Institut fuer Mikrostrukturphysik, Weinberg 2, D-06120 Halle (Germany); Jedrecy, N. [Institut des NanoSciences de Paris, Universites Paris 6 et 7, et CNRS-UMR 7588, 4 place Jussieu, F-75252 Paris Cedex 05 (France); Renaud, G. [CEA-Grenoble, 17 rue des Martyrs, F-38054 Grenoble (France)

2005-10-21T23:59:59.000Z

190

Adsorption and decomposition of Ru{sub 3}(CO){sub 9}(CH{sub 3}CN){sub 3} at platinum surfaces: An X-ray photoelectron spectroscopy and Fourier transform-infrared spectroscopy study  

Science Conference Proceedings (OSTI)

The direct methanol fuel cell (DMFC) is an attractive power source for mobile applications due to the high-energy density of methanol, the portability and ease of distribution of liquid rather than gaseous fuel, and elimination of the need for a bulky, power-consuming fuel reformer. There are several factors limiting the power output of polymer electrolyte DMFCs. One of the major factors is the slow kinetics of the methanol electrooxidation reaction on the conventional platinum catalyst material. A CH{sub 3}CN-modified triruthenium carbonyl cluster, Ru{sub 3}(CO){sub 9}(CH{sub 3}CN){sub 3}(I), has been adsorbed on platinum and platinum oxide surfaces from dichloromethane solutions. The modified surface has been characterized by X-ray photoelectron spectroscopy (XPS) and polarized grazing angle Fourier transform-infrared (FT-IR) microscopy. The proposed mechanism for the adsorption of I involves the chemisorption of the metal cluster at the platinum surface by losing the acetonitrile ligand. The original cluster, Ru{sub 3}(CO){sub 12}, could not be adsorbed under the same experimental conditions used for cluster I. The cluster-modified surface was treated with hydrogen for the reduction of the cluster to its metallic state on the Pt surface. This was done at different temperatures. The XPS results show the formation of a complex Ru-RuO{sub 2}-RuO{sub 3}/Pt surface.

Fachini, E.R.; Cabrera, C.R. [Univ. of Puerto Rico, San Juan (Puerto Rico). Dept. of Chemistry

1999-02-02T23:59:59.000Z

191

FE annual Report Bioprocessing of Fossil Fuels  

E-Print Network (OSTI)

FE annual Report July 2004 Bioprocessing of Fossil Fuels Abhijeet Borole, Life Sciences Division The overall objective of this research program is to develop novel technologies for processing fossil fuels energy-efficient. Processes based on oxidative as well as reductive reactions are being investigated

192

Crystal fields, disorder, and antiferromagnetic short-range order in (Yb0.24Sn0.76)Ru  

Science Conference Proceedings (OSTI)

We report extensive measurements on a new compound (Yb{sub 0.24}Sn{sub 0.76})Ru that crystallizes in the cubic CsCl structure. Valence-band photoemission (PES) and L{sub 3} x-ray absorption show no divalent component in the 4f configuration of Yb. Inelastic neutron scattering (INS) indicates that the eight-fold degenerate J-multiplet of Yb{sup 3+} is split by the crystalline electric field (CEF) into a {Lambda}{sub 7}-doublet ground state and a {Lambda}{sub 8} quartet at an excitation energy 20 meV. The magnetic susceptibility can be fit very well by this CEF scheme under the assumption that a {Lambda}{sub 6}-excited state resides at 32 meV; however, the {Lambda}{sub 8}/{Lambda}{sub 6} transition expected at 12 meV was not observed in the INS. The resistivity follows a Bloch-Grueneisen law shunted by a parallel resistor, as is typical of systems subject to phonon scattering with no apparent magnetic scattering. All of these properties can be understood as representing simple local moment behavior of the trivalent Yb ion. At 1 K there is a peak in specific heat that is too broad to represent a magnetic-phase transition, consistent with absence of magnetic reflections in neutron diffraction. On the other hand this peak also is too narrow to represent the Kondo effect in the {Lambda}{sub 7}-doublet ground state. On the basis of the field dependence of the specific heat, we argue that antiferromagnetic (AF) short-range order (SRO) (possibly coexisting with Kondo physics) occurs at low temperatures. The long-range magnetic order is suppressed because the Yb site occupancy is below the percolation threshold for this disordered compound.

Klimczuk, T [Los Alamos National Lab and European Commission, JRC; Wang, Cuihuan [ORNL; Lawrence, J. M. [University of California, Irvine; Xu, Q. [University of Antwerp; Durakiewicz, T. [Los Alamos National Laboratory (LANL); Ronning, F [Los Alamos National Laboratory (LANL); Llobet, A [Los Alamos National Laboratory (LANL); Trouw, F. [Los Alamos National Laboratory (LANL); Kurita, N [Los Alamos National Laboratory (LANL); Tokiwa, Y [Los Alamos National Laboratory (LANL); Lee, Han-oh [Los Alamos National Laboratory (LANL); Booth, C. H. [Lawrence Berkeley National Laboratory (LBNL); Gardner, J. S. [National Institute of Standards and Technology (NIST); Bauer, E. D. [Los Alamos National Laboratory (LANL); Joyce, J. J. [Los Alamos National Laboratory (LANL); Zandbergen, H. W. [Oak Ridge National Laboratory (ORNL); Movshovich, R [Los Alamos National Laboratory (LANL); Cava, R J [Princeton University; Thompson, J. D. [Los Alamos National Laboratory (LANL)

2011-01-01T23:59:59.000Z

193

T-621: Citrix XenServer Lets Local Administrative Users on the Guest OS  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

21: Citrix XenServer Lets Local Administrative Users on the 21: Citrix XenServer Lets Local Administrative Users on the Guest OS Deny Service T-621: Citrix XenServer Lets Local Administrative Users on the Guest OS Deny Service May 12, 2011 - 3:00pm Addthis PROBLEM: A vulnerability was reported in Citrix XenServer. A local administrative user on the guest operating system can cause denial of service conditions. PLATFORM: Citrix XenServer 5.6 Feature Pack 1 and prior ABSTRACT: A local administrative user on a guest operating system can interrupt the normal operation of the target hypervisor. reference LINKS: Document ID: CTX129208 SecurityTracker Alert ID: 1025524 Document ID: CTX129103 Document ID: CTX129102 Document ID: CTX128844 Document ID: CTX129101 Document ID: CTX129100 Citrix Support IMPACT ASSESSMENT Medium Discussion:

194

2011 Annual Planning Summary for Fossil Energy (FE)  

Energy.gov (U.S. Department of Energy (DOE))

The ongoing and projected Environmental Assessments and Environmental Impact Statements for 2011 and 2012 within Fossil Energy (FE).

195

Phototrophic Fe(II) Oxidation Promotes Organic Carbon Acquisition  

E-Print Network (OSTI)

Anoxygenic phototrophic Fe(II) oxidation is usually considered to be a lithoautotrophic metabolism that contributes to primary production in Fe-based ecosystems. In this study, we employed Rhodobacter capsulatus SB1003 as a model organism to test the hypothesis that phototrophic Fe(II) oxidation can be coupled to organic carbon acquisition. R. capsulatus SB1003 oxidized Fe(II) under anoxic conditions in a light-dependent manner, but it failed to grow lithoautotrophically on soluble Fe(II). When the strain was provided with Fe(II)-citrate, however, growth was observed that was dependent upon microbially catalyzed Fe(II) oxidation, resulting in the formation of Fe(III)-citrate. Subsequent photochemical breakdown of Fe(III)-citrate yielded acetoacetic acid that supported growth in the light but not the dark. The deletion of genes (RRC00247 and RRC00248) that encode homologs of atoA and atoD, required for acetoacetic acid utilization, severely impaired the ability of R. capsulatus SB1003 to grow on Fe(II)-citrate. The growth yield achieved by R. capsulatus SB1003 in the presence of citrate cannot be explained by lithoautotrophic growth on Fe(II) enabled by indirect effects of the ligand [such as altering the thermodynamics of Fe(II) oxidation or preventing cell encrustation]. Together, these results demonstrate that R. capsulatus SB1003 grows photoheterotrophically on Fe(II)-citrate. Nitrilotriacetic acid also supported light-dependent growth on Fe(II), suggesting that Fe(II) oxidation may be a general mechanism whereby some Fe(II)-oxidizing bacteria mine otherwise inaccessible organic carbon sources.

Rhodobacter Capsulatus Sb; Nicky C. Caiazza; Douglas P. Lies; Dianne K. Newman

2006-01-01T23:59:59.000Z

196

P e d r o R os a s DYNAMIC INFLUENCES OF WIND  

E-Print Network (OSTI)

P e d r o R os a s DYNAMIC INFLUENCES OF WIND POWER ON THE POWER SYSTEM P h D t h e s is S e c t i-91184-16-9 #12;DYNAMIC INFLUENCES OF WIND POWER ON THE POWER SYSTEM By Pedro Rosas Thesis submitted to �rsted Institute, Risø National Laboratory & Brazilian Wind Energy Centre Denmark, March 2003 iii #12;iv #12

197

PNNL OS3700 Tritium Monitoring System Software and Hardware Operations Manual, Revision 0  

SciTech Connect

The PNNL OS3700 Tritium Monitoring System Software and Hardware Operations Manual describes herein how to install and operate the software and hardware on a personal computer in conjunction with the Berthold LB110 flow-through proportional counter detector system. Included are operational details for the software functions, how to read and use the drop-down menus, how to understand readings and calculations, and how to access the database tables.

Barnett, J M.; Duchsherer, Cheryl J.; Sisk, Daniel R.; Carrell, Dorothy M.; Douglas, David D.; Carter, Gregory L.

2005-11-09T23:59:59.000Z

198

PNNL OS3300 Alpha/Beta Monitoring System Software and Hardware Operations Manual, Revision 0  

SciTech Connect

This Pacific Northwest National Laboratory (PNNL) OS3300 Alpha/Beta Monitoring System Software and Hardware Operations Manual describes how to install and operate the software and hardware on a personal computer in conjunction with the EG&G Berthold LB150D continuous air monitor. Included are operational details for the software functions, how to read and use the drop-down menus, how to understand readings and calculations, and how to access the database tables.

Barnett, J. M.; Duchsherer, Cheryl J.; Sisk, Daniel R.; Carter, Gregory L.; Douglas, David D.; Carrell, Dorothy M.

2006-01-25T23:59:59.000Z

199

Probing The Electronic Structure of the Di-iron Subsite of[Fe] -hydrogenase: A Photoelectron Spectroscopic Study of Fe(I)- Fe(I) Model Complexes  

Science Conference Proceedings (OSTI)

The electronic structures of a series of Fe(I)-Fe(I) model complexes of the di-iron subsite of[Fe]-hydrogenase,[(mu- PDT)Fe-2(CO)(4)(CN)(2)](2-) (1),[Fe- 2(CO)(4)(MeSCH2C(Me)(CH2S)(2))(CN)(2)](2-) (II),[Fe- 2(CO)(4)(PhCH2SCH2C(Me)-(CH2S)(2))(CN)(2)](2-) (III),[Fe- 2(CO)(4)(PhCH2SCH2C(Me) (CH2S)(2))(CN)](-) (IV), and[Fe- 2(CO)(4)(MeSCH2C(Me)(CH2S)(2))(CN)](-) (V), were investigated in the gas phase using photodetachment photoelectron spectroscopy. The adiabatic electron detachment energy (ADE) of each species and the intramolecular Coulomb repulsion for the doubly charged species were obtained. The ADEs correspond to the intrinsic redox potentials (in vacuo) of reactions involving the Fe(I)-Fe(I)/Fe(I)-Fe(II) couples in these compounds. The photoelectron spectra were understood and qualitatively assigned by comparing with that of Fe-2(CO)(6)S- 2, which has been well studied previously and exhibits similar valence spectral features as I-V. A''normal level scheme'' is suggested for the electronic structure of these low spin di- iron compounds, in which all occupied 3d levels lie above all occupied ligand levels. We also observed subtle differences in the electronic structures of the five di-iron complexes due to the slightly different ligand environments.

Yang, Xin; Razavet, Mathieu; Wang, Xue B.; Pickett, Chris J.; Wang, Lai S.

2003-06-12T23:59:59.000Z

200

Direct Observation of Coexistence of Ferromagnetism and Superconductivity in RuSr2(Gd0.7Ce0.3)2Cu2O10  

E-Print Network (OSTI)

Recent reports of the detecting of ferromagnetism and superconductivity in ruthenium-cuprates have aroused great interest. Unfortunately, whether the two antagonistic phenomena coexist in the same space in the compounds remains unresolved. By employing the magneto-optical-imaging technique, ferromagnetism and superconductivity were indeed directly observed to coexist in the same space in RuSr2(Gd0.7Ce0.3)2Cu2O10 within the experimental resolution of ? 10 µm. The observation sets a length scale limit for models proposed to account for the competition between ferromagnetism and superconductivity, especially d-wave superconductivity, in this interesting class of compounds.

unknown authors

2008-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "fe ru os" 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

FE Petroleum Reserves News | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Petroleum Reserves News Petroleum Reserves News FE Petroleum Reserves News RSS April 10, 2013 President Requests $638.0 Million for Fossil Energy Programs President Obama's FY 2014 budget seeks $638.0 million for the Office of Fossil Energy (FE) to advance technologies related to the reliable, efficient, affordable and environmentally sound use of fossil fuels as well as manage the Strategic Petroleum Reserve and Northeast Home Heating Oil Reserve to provide strategic and economic security against disruptions in U.S. oil supplies. November 9, 2012 Energy Department Provides Additional Emergency Fuel Loan to Department of Defense as Part of Hurricane Sandy and Nor'easter Recovery As part of the government-wide response and recovery effort for Hurricane Sandy and the Nor'easter, the Energy Department is providing the

202

Model of Fe Nanostripes on Cu(111)  

Science Conference Proceedings (OSTI)

Magnetization as a function of temperature calculated with Monte Carlo techniques is compared to experimental results of Fe stripes grown on vicinal Cu(111) surfaces. The stripes are step decorations grown with molecular beam epitaxy (MBE), are 1-2 monolayers thick, and display perpendicular magnetization. The atomic parameters are determined from fully relativistic electronic structure calculations. The moments are found to be 2.57 {micro}{sub B}, with some variation due to film thickness, and uniaxial anisotropy of 40 {micro}Ry/atom for Fe atoms facing vacuum. The Heisenberg model extended to include crystalline anisotropy as well as dipole-dipole interactions is considered for two different values of the exchange constant: J = 20 and 2 meV. Under a large applied field (4000 G), the calculated saturation magnetization falls slowly from 507 emu/cm{sup 3} with an increase in temperature until it falls rapidly around 600 K, after which a more modest falloff with an increase in temperature is observed. For larger J the rapid change occurs for higher temperatures. The importance of disorder in the height and width of the stripes is investigated by generating stripe geometries with a model that incorporates nucleation and growth of Fe particles at step edges under the constraint of constant deposition from MBE. The primary effect of disorder in the stripes is to reduce the saturated magnetization at lower temperatures.

Brown, G. [Florida State University; Lee, H. K. [University of Georgia, Athens, GA; Schulthess, Thomas C [ORNL; Ujfalussy, Balazs [ORNL; Stocks, George Malcolm [ORNL; Butler, William H [ORNL; Landau, David P [ORNL; Pierce, John Philip [ORNL; Shen, Jian [ORNL; Kirschner, Jurgen M [ORNL

2002-01-01T23:59:59.000Z

203

Incorporation of oxidized uranium into Fe (hydr)oxides during Fe(II) catalyzed remineralization  

SciTech Connect

The form of solid phase U after Fe(II) induced anaerobic remineralization of ferrihydrite in the presence of aqueous and absorbed U(VI) was investigated under both abiotic batch and biotic flow conditions. Experiments were conducted with synthetic ground waters containing 0.168 mM U(VI), 3.8 mM carbonate, and 3.0 mM Ca{sup 2+}. In spite of the high solubility of U(VI) under these conditions, appreciable removal of U(VI) from solution was observed in both the abiotic and biotic systems. The majority of the removed U was determined to be substituted as oxidized U (U(VI) or U(V)) into the octahedral position of the goethite and magnetite formed during ferrihydrite remineralization. It is estimated that between 3% and 6% of octahedral Fe(III) centers in the new Fe minerals were occupied by U(VI). This site specific substitution is distinct from the non-specific U co-precipitation processes in which uranyl compounds, e.g. uranyl hydroxide or carbonate, are entrapped with newly formed Fe oxides. The prevalence of site specific U incorporation under both abiotic and biotic conditions and the fact that the produced solids were shown to be resistant to both extraction (30 mM KHCO{sub 3}) and oxidation (air for 5 days) suggest the potential importance of sequestration in Fe oxides as a stable and immobile form of U in the environment.

Nico, Peter S.; Stewart, Brandy D.; Fendorf, Scott

2009-07-01T23:59:59.000Z

204

Activation of the S-H Group in Fe(µ2-SH)Fe Clusters: S-H Bond Strengths and Free Radical Reactivity of the Fe(µ2-SH)Fe Cluster  

DOE Green Energy (OSTI)

Absolute rate constants were determined for the abstraction of hydrogen atom from (OC)3Fe(?-SH)2Fe(CO)3 (Fe2S2H2) and (OC)3Fe(?-SCH3)(?-SH)Fe(CO)3 (Fe2S2MeH) by benzyl radical in benzene. From the temperature dependent rate data for Fe2S2H2, ?H‡ and ?S‡ were determined to be 2.03 ? 0.56 kcal/mol and 19.3 ? 1.7 cal/mol K, respectively, giving kabs = 1.2 ? 107 M 1 s 1 at 25?C. For Fe2S2MeH, ?H‡ and ?S‡ were determined to be 1.97 ? 0.46 kcal/mol and 18.1 ? 1.5 cal/mol K, respectively, giving kabs = 2.3 ? 107 M 1 s 1 at 25?C. Temperature dependent rate data are also reported for hydrogen atom abstraction by benzyl radical from thiophenol (?H‡ = 3.62 ? 0.43 kcal/mol, ?S‡ = 21.7 ? 1.3 cal/mol K) and H2S (?H‡ = 5.13 ? 0.99 kcal/mol, ?S‡ = 24.8 ? 3.2 cal/mol K), giving kabs at 25?C of 2.5 ? 105 and 4.2 ? 103 M 1 s 1, respectively. DFT calculations predict S-H bond strengths of 73.1 and 73.2 kcal/mol for Fe2S2H2 and Fe2S2MeH, respectively. Free energy and NMR chemical shift calculations confirm the NMR assignments and populations of Fe2S2H2 and Fe2S2MeH isomers. Derived radicals Fe2S2H• and Fe2S2Me• exhibit singly occupied HOMOs with unpaired spin density distributed between the two Fe atoms, a bridging sulfur, and d?-bonding between Fe centers. The S-H solution bond dissociation free energy (SBDFE) of Fe2S2MeH was found to be 69.4 ± 1.7 kcal/mol by determination of its pKa (16.0 ± 0.4) and the potential for the oxidation of the anion, Fe2S2Me- of 0.26 ± 0.05 V vs. ferrocene in acetonitrile (corrected for dimerization of Fe2S2Me•). This SBDFE for Fe2S2MeH corresponds to a gas phase bond dissociation enthalpy (BDE) of 74.2 kcal/mol, in satisfactory agreement with the DFT value of 73.2 kcal/mol. Replacement of the Fe-Fe bond in Fe2S2MeH with bridging ?-S (Fe2S3MeH) or ?-CO (Fe2S2(CO)MeH) groups leads to (DFT) BDEs of 72.8 and 66.2 kcal/mol, the latter indicating dramatic effects of choice of bridge structure on S-H bond strengths. These results provide a model for the reactivity of hydrosulfido sites of low-valent heterogeneous FeS catalysts. This work was supported by the US Department of Energy's Office of Basic Energy Sciences, Chemical Sciences program. Pacific Northwest National Laboratory is operated by Battelle for the US Department of Energy.

Franz, James A.; Lee, Suh-Jane; Bowden, Thomas A.; Alnajjar, Mikhail S.; Appel, Aaron M.; Birnbaum, Jerome C.; Bitterwolf, Thomas E.; Dupuis, Michel

2009-10-28T23:59:59.000Z

205

Ru!fsa!!  

Office of Legacy Management (LM)

prejmt . Rufsa sgI51k ains . : r l u s e l i c c u at c r t ; JIIIIU:,ILIIII UII ENGINEERING 'IITH NUCLEAR EXPLOSIVES . . (4th Plovjshare Symposium) . .. ......

206

Dpon ru Paean 1  

E-Print Network (OSTI)

Description (to be used in archive entry) The lyrics state, "Sheep wool is smooth in the fourth lunar month, the time when adults are happy. Female yaks are full of milk in the fifth lunar month, the time when singers are happy. Horses are in good shape...

Gcod pa don 'grub

207

U-232: Xen p2m_teardown() Bug Lets Local Guest OS Users Deny Service on the  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

32: Xen p2m_teardown() Bug Lets Local Guest OS Users Deny 32: Xen p2m_teardown() Bug Lets Local Guest OS Users Deny Service on the Host OS U-232: Xen p2m_teardown() Bug Lets Local Guest OS Users Deny Service on the Host OS August 10, 2012 - 7:00am Addthis PROBLEM: Xen p2m_teardown() Bug Lets Local Guest OS Users Deny Service on the Host OS PLATFORM: This vulnerability effects only Xen 4.0 and 4.1. Xen 3.4 and earlier and xen-unstable are not vulnerable. ABSTRACT: A vulnerability was reported in Xen. A local user on a guest operating system can cause denial of service conditions on the host. reference LINKS: Xen Security Announcements SecurityTracker Alert ID: 1027365 seclists.org CVE-2012-3433 IMPACT ASSESSMENT: Medium Discussion: An HVM guest is able to manipulate its physical address space such that tearing down the guest takes an extended period amount of time searching

208

U-232: Xen p2m_teardown() Bug Lets Local Guest OS Users Deny Service on the  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

32: Xen p2m_teardown() Bug Lets Local Guest OS Users Deny 32: Xen p2m_teardown() Bug Lets Local Guest OS Users Deny Service on the Host OS U-232: Xen p2m_teardown() Bug Lets Local Guest OS Users Deny Service on the Host OS August 10, 2012 - 7:00am Addthis PROBLEM: Xen p2m_teardown() Bug Lets Local Guest OS Users Deny Service on the Host OS PLATFORM: This vulnerability effects only Xen 4.0 and 4.1. Xen 3.4 and earlier and xen-unstable are not vulnerable. ABSTRACT: A vulnerability was reported in Xen. A local user on a guest operating system can cause denial of service conditions on the host. reference LINKS: Xen Security Announcements SecurityTracker Alert ID: 1027365 seclists.org CVE-2012-3433 IMPACT ASSESSMENT: Medium Discussion: An HVM guest is able to manipulate its physical address space such that tearing down the guest takes an extended period amount of time searching

209

T-632: Google Chrome OS before R12 0.12.433.38 Beta Update | Department of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

32: Google Chrome OS before R12 0.12.433.38 Beta Update 32: Google Chrome OS before R12 0.12.433.38 Beta Update T-632: Google Chrome OS before R12 0.12.433.38 Beta Update May 31, 2011 - 2:00pm Addthis PROBLEM: Unspecified vulnerability in the dbugs package in Google Chrome OS before R12 0.12.433.38 Beta has unknown impact and attack vectors. The Chrome OS Beta channel has announced an updated to R12 release 0.12.433.38 features of Chrome 12 Beta include, new trackpad, new flash player and several stability and functional improvements over the previous releases. PLATFORM: Products Affected By CVE-2011-2171: Google Chrome OS (Previous Releases) ABSTRACT: CVE-2011-2171 addresses unspecified vulnerabilities in the dbugs package of Google Chrome OS. Prior versions of Google Chrome can be fixed by updating to the current release. Information and content related to this CVE was

210

Atomistic Modeling of Screw Dislocation Mobility in Alpha-Fe  

Science Conference Proceedings (OSTI)

Register as a New User ... Presentation Title, Atomistic Modeling of Screw Dislocation Mobility in Alpha-Fe. Author(s), Neeraj S. Thirumalai, Peter Gordon, Ju Li, ...

211

Development of Ni-Fe Hydrogenation Catalyst from D. Gigas ...  

Development of Ni-Fe Hydrogenation Catalyst from D. Gigas Hydrogenase Note: The technology described above is an early stage opportunity. Licensing rights to this ...

212

Microstructural Characterization of Fe-Mn-C Ternary Alloy under ...  

Science Conference Proceedings (OSTI)

Mercury Oxidation and Capture over SCR Catalysts in Simulated Coal Combustion Flue Gas · Microstructural Characterization of Fe-Mn-C Ternary Alloy under ...

213

Microsoft Word - FE PSRP 08-19-09 _3_.doc  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

PSRP Name: Fossil Energy Research & Development (R&D) PSRP Lead Program Office andor LaboratorySite Office: Office of Fossil Energy (FE)National Energy Technology Laboratory...

214

Novel Approaches to Microstructural Characterisation in NdFeB ...  

Science Conference Proceedings (OSTI)

Application of Nd-Fe-B Magnets to the Megawatt Scale Generator for the Wind Turbine · Bonded Magnetocaloric Powders for the Refrigeration Application.

215

Electrochemical Performance of LiFeMnPO4  

Science Conference Proceedings (OSTI)

Symposium, Energy Storage: Materials, Systems, and Applications. Presentation Title, Electrochemical Performance of LiFeMnPO4: A Comparison of Synthesis ...

216

Controlling Composition at the Individual FePt Nanoparticle Level  

Science Conference Proceedings (OSTI)

CNT Based Thermoelectric Devices for Energy Harvesting · Controlling Composition at the Individual FePt Nanoparticle Level · Corrosion Rates and Mechanical ...

217

Localized Phase Transformation in Amorphous Fe-Si-B Ribbons ...  

Science Conference Proceedings (OSTI)

Abstract Scope, Fe-based amorphous alloys are used in modern transformers to reduce the core losses as they exhibit excellent permeability and increased ...

218

C50 Mill Scale for Synthesis of Fe–Ni and Fe–Ni–Co Alloys through ...  

Science Conference Proceedings (OSTI)

D14 Gold Nanoparticles in Red Ruby Glasses Used for Decoration in Thailand · D15 Soft Magnetic Properties of Nanocrystalline Fe-based P/M Cores Mixed ...

219

Delocalized Molecular Orbitals of the [6Fe-6S] Cluster of the...  

NLE Websites -- All DOE Office Websites (Extended Search)

Delocalized Molecular Orbitals of the 6Fe-6S Cluster of the FeFe-Hydrogenase Hydrogenases catalyze the stoichiometrically simple (H2 2 H+ + 2 e-), but energetically difficult...

220

FE Clean Coal News | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Clean Coal News Clean Coal News FE Clean Coal News RSS February 9, 2009 DOE Award Results in Several Patents, Potential Increased Coal Recovery A $13 million cooperative effort with the Office of Fossil Energy's National Energy Technology Laboratory (NETL) over the past seven years has resulted in the successful demonstration of a novel technology that addresses a problem plaguing coal operators and environmentalists alike: separating fine coal particles from water and their ultimate use as a significant energy resource. February 5, 2009 SECA Fuel Cell Program Moves Two Key Projects Into Next Phase The U.S. Department of Energy has selected two projects for continuation within the Department's Solid State Energy Conversion Alliance (SECA) Program research portfolio. February 3, 2009

Note: This page contains sample records for the topic "fe ru os" 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

FE Speeches and Testimony | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Speeches and Testimony Speeches and Testimony FE Speeches and Testimony RSS July 25, 2013 DOE's Coal Research and Development Statement of Christopher Smith, Acting Assistant Secretary for Fossil Energy, before the House Committee on Science, Space and Technology Subcommittee on Energy June 18, 2013 DOE's Program Regulating Liquefied Natural Gas Export Applications Statement of Christopher Smith, Acting Assistant Secretary for Fossil Energy, before the House Committee on Energy and Commerce Subcommittees on Energy and Power April 26, 2013 DOE's Shale Gas and Hydraulic Fracturing Research Statement of Guido DeHoratiis Acting Deputy Assistant Secretary for Oil and Natural Gas before the House Committee on Science, Space, and Technology Subcommittees on Energy and Environment March 19, 2013

222

FE Petroleum Reserves News | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Petroleum Reserves News Petroleum Reserves News FE Petroleum Reserves News RSS March 14, 2011 DOE Seeks Commercial Storage for Northeast Home Heating Oil Reserve The Department of Energy, through its agent, DLA Energy, has issued a solicitation for new contracts to store two million barrels of ultra low sulfur distillate for the Northeast Home Heating Oil Reserve in New York Harbor and New England. February 10, 2011 DOE Completes Sale of Northeast Home Heating Oil Stocks The U.S. Department of Energy today has awarded contracts to four companies who successfully bid for the purchase of 1,000,000 barrels of heating oil from the Northeast Home Heating Oil Reserve storage sites in Groton and New Haven, CT. February 3, 2011 DOE Accepts Bids for Northeast Home Heating Oil Stocks The U.S. Department of Energy (DOE) today has awarded contracts to three

223

FE Categorical Exclusions | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Categorical Exclusions Categorical Exclusions FE Categorical Exclusions RSS October 13, 2011 CX-007099: Categorical Exclusion Determination Slipstream Pilot-Scale Demonstration of a Novel Amine-Based Post-Combustion Technology for Carbon Dioxide Capture CX(s) Applied: A9, A11 Date: 10/13/2011 Location(s): Germany, Other Location, California, New Jersey, Pennsylvania Office(s): Fossil Energy, National Energy Technology Laboratory October 12, 2011 CX-007108: Categorical Exclusion Determination Energy-Saving Opportunities in Water Treatment and Distribution CX(s) Applied: B3.6 Date: 10/12/2011 Location(s): Grand Forks, Grand Forks County, North Dakota Office(s): Fossil Energy, National Energy Technology Laboratory October 12, 2011 CX-007107: Categorical Exclusion Determination Development of Novel Carbon Sorbents for Carbon Dioxide Capture

224

FE Categorical Exclusions | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Categorical Exclusions Categorical Exclusions FE Categorical Exclusions RSS February 6, 2013 CX-009797: Categorical Exclusion Determination Eni USA Gas Marketing, LLC CX(s) Applied: B5.7 Date: 02/06/2013 Location(s): Louisiana Offices(s): Fossil Energy January 15, 2013 CX-009796: Categorical Exclusion Determination Sempra Liquid Natural Gas Marketing, LLC CX(s) Applied: B5.7 Date: 01/15/2013 Location(s): Louisiana Offices(s): Fossil Energy January 15, 2013 CX-009533: Categorical Exclusion Determination Sempra LNG Marketing, Inc. CX(s) Applied: B5.7 Date: 01/15/2013 Location(s): California, Louisiana Offices(s): Fossil Energy November 29, 2012 CX-009523: Categorical Exclusion Determination Chevron U.S.A. Inc. CX(s) Applied: B5.7 Date: 11/29/2012 Location(s): Louisiana, California Offices(s): Fossil Energy

225

[FeFe]-Hydrogenase-Catalyzed H2 Production in a Photoelectrochemical Biofuel Cell  

SciTech Connect

The Clostridium acetobutylicum [FeFe]-hydrogenase HydA has been investigated as a hydrogen production catalyst in a photoelectrochemical biofuel cell. Hydrogenase was adsorbed to pyrolytic graphite edge and carbon felt electrodes. Cyclic voltammograms of the immobilized hydrogenase films reveal cathodic proton reduction and anodic hydrogen oxidation, with a catalytic bias toward hydrogen evolution. When corrected for the electrochemically active surface area, the cathodic current densities are similar for both carbon electrodes, and 40% of those obtained with a platinum electrode. The high surface area carbon felt/hydrogenase electrode was subsequently used as the cathode in a photoelectrochemical biofuel cell. Under illumination, this device is able to oxidize a biofuel substrate and reduce protons to hydrogen. Similar photocurrents and hydrogen production rates were observed in the photoelectrochemical biofuel cell using either hydrogenase or platinum cathodes.

Hambourger, M.; Gervaldo, M.; Svedruzic, D.; King, P. W.; Gust, D.; Ghirardi, M.; Moore, A. L.; Moore, T. A.

2008-01-01T23:59:59.000Z

226

Data:764ba1e6-bb46-40fe-855e-f9602f6db2ec | Open Energy Information  

Open Energy Info (EERE)

ba1e6-bb46-40fe-855e-f9602f6db2ec ba1e6-bb46-40fe-855e-f9602f6db2ec No revision has been approved for this page. It is currently under review by our subject matter experts. Jump to: navigation, search Loading... 1. Basic Information 2. Demand 3. Energy << Previous 1 2 3 Next >> Basic Information Utility name: Lee County Electric Coop, Inc Effective date: 2008/07/01 End date if known: Rate name: OS-2 Traffic Signal Electric Service Sector: Lighting Description: This schedule is applicable to all electric service used exclu-sively for traffic signals and other traffic control devices where the traffic signal system and the circuit necessary to connect to the Lee County Electric Cooperative, Inc.'s existing distribution facilities are installed, owned, and maintained by the customer.

227

Microstrucutre of HRE Grain Boundary Diffusion Processed Nd-Fe-B ...  

Science Conference Proceedings (OSTI)

Symposium, Magnetic Materials for Energy Applications IV ... Fe-rich FeSiBPCu Nano-crystalline Soft Magnetic Alloys Contributable To Energy-saving.

228

Synthesis of Sm-Fe-N Hard Magnets by Reactive Mechanical Milling  

Science Conference Proceedings (OSTI)

In this study, we have performed reactive mechanical milling on Sm2Fe17 alloy under hydrogen atmosphere. After reactive mechanical milling, the Sm2Fe17 ...

229

Magnetic Depth Profiling of Al 2 O 3 /Fe/Si Structure using NG ...  

Science Conference Proceedings (OSTI)

... Transistor (Spin-FET). MRAM. Tunnel Magnetoresistance. Hard Disk. Giant Magnetoresistance. Al 2 O 3 /Fe/Si Structure. Al 2 O 3. Fe. Si. ...

2006-08-09T23:59:59.000Z

230

Strength anomaly in B2 FeAl single crystals  

Science Conference Proceedings (OSTI)

Strength and deformation microstructure of B2 Fe-39 and 48%Al single crystals (composition given in atomic percent), which were fully annealed to remove frozen-in vacancies, have been investigated at temperatures between room temperature and 1073K. The hardness of as-homogenized Fe-48Al is higher than that of as-homogenized Fe-39Al while after additional annealing at 698K the hardness of Fe-48Al becomes lower than that of Fe-39Al. Fe-39Al single crystals slowly cooled after homogenizing at a high temperature were deformed in compression as a function of temperature and crystal orientation. A peak of yield strength appears around 0.5T{sub m} (T{sub m} = melting temperature). The orientation dependence of the critical resolved shear stress does not obey Schmid`s law even at room temperature and is quite different from that of b.c.c. metals and B2 intermetallics at low temperatures. At the peak temperature slip transition from -type to -type is found to occur macroscopically and microscopically, while it is observed in TEM that some of the [111] dislocations decompose into [101] and [010] on the (1096I) plane below the peak temperature. The physical sources for the positive temperature dependence of yield stress of B2 FeAl are discussed based on the obtained results.

Yoshimi, K.; Hanada, S.; Yoo, M.H. [Oak Ridge National Lab., TN (United States); Matsumoto, N. [Tohoku Univ. (Japan). Graduate School

1994-12-31T23:59:59.000Z

231

Structurally-driven metal-insulator transition in Ca{sub 2}Ru{sub 1-x}Cr{sub x}O{sub 4} (0{<=}x<0.14): A single crystal X-ray diffraction study  

Science Conference Proceedings (OSTI)

Correlation between structure and transport properties are investigated in high-quality single-crystals of Ca{sub 2}Ru{sub 1-x}Cr{sub x}O{sub 4} with 013.5% and the system behaves as an insulator. Such a large, sharp metal-insulator transition and tuneable transition temperature may have potential applications in electronic devices. -- Graphical abstract: The metal-insulator transition temperature (T{sub MI}) was drastically reduced by Cr doping, and is closely related to the distortion of structure. Display Omitted Research highlights: {yields} The metal-insulator transition temperature (T{sub MI}) was drastically reduced by doping Cr into Ca{sub 2}RuO{sub 4} single crystal. {yields} Detailed single crystal structural analysis provided important insight into this structurally-driven metal-insulator transition. {yields} Negative Volume Thermal Expansion (NVTE) was observed with increasing temperature.

Qi, T.F., E-mail: tqi2@uky.ed [Center for Advanced Materials, University of Kentucky, Lexington, KY 40506 (United States); Department of Physics and Astronomy, University of Kentucky, Lexington, KY 40506 (United States); Ge, M. [Center for Advanced Materials, University of Kentucky, Lexington, KY 40506 (United States); High Magnetic Field Laboratory, University of Science and Technology of China, Hefei, Anhui 230026 (China); Korneta, O.B. [Center for Advanced Materials, University of Kentucky, Lexington, KY 40506 (United States); Department of Physics and Astronomy, University of Kentucky, Lexington, KY 40506 (United States); Parkin, S. [Center for Advanced Materials, University of Kentucky, Lexington, KY 40506 (United States); Department of Chemistry, University of Kentucky, Lexington, KY 40506 (United States); De Long, L.E.; Cao, G. [Center for Advanced Materials, University of Kentucky, Lexington, KY 40506 (United States); Department of Physics and Astronomy, University of Kentucky, Lexington, KY 40506 (United States)

2011-04-15T23:59:59.000Z

232

Accelerated decarburization of Fe-C metal alloys  

DOE Patents (OSTI)

A process is described for improving the rate of metal production and FeO utilization in a steelmaking process or a process combining iron-making and steelmaking in a single reactor that uses or generates Fe-C metal alloy droplets submerged in an FeO-containing slag. The process involves discharging a charge build-up (electron accumulation) in the slag at the slag-metal alloy interface by means of an electron conductor connected between the metal alloy droplets and a gas at a gas-slag interface, said gas having an oxygen partial pressure of at least about 0.01 atmosphere. 2 figs.

Pal, U.B.; Sadoway, D.R.

1997-05-27T23:59:59.000Z

233

Fischer-Tropsch Synthesis: Influence of CO Conversion on Selectivities H2/CO Usage Ratios and Catalyst Stability for a 0.27 percent Ru 25 percent Co/Al2O3 using a Slurry Phase Reactor  

SciTech Connect

The effect of CO conversion on hydrocarbon selectivities (i.e., CH{sub 4}, C{sub 5+}, olefin and paraffin), H{sub 2}/CO usage ratios, CO{sub 2} selectivity, and catalyst stability over a wide range of CO conversion (12-94%) on 0.27%Ru-25%Co/Al{sub 2}O{sub 3} catalyst was studied under the conditions of 220 C, 1.5 MPa, H{sub 2}/CO feed ratio of 2.1 and gas space velocities of 0.3-15 NL/g-cat/h in a 1-L continuously stirred tank reactor (CSTR). Catalyst samples were withdrawn from the CSTR at different CO conversion levels, and Co phases (Co, CoO) in the slurry samples were characterized by XANES, and in the case of the fresh catalysts, EXAFS as well. Ru was responsible for increasing the extent of Co reduction, thus boosting the active site density. At 1%Ru loading, EXAFS indicates that coordination of Ru at the atomic level was virtually solely with Co. It was found that the selectivities to CH{sub 4}, C{sub 5+}, and CO{sub 2} on the Co catalyst are functions of CO conversion. At high CO conversions, i.e. above 80%, CH{sub 4} selectivity experienced a change in the trend, and began to increase, and CO{sub 2} selectivity experienced a rapid increase. H{sub 2}/CO usage ratio and olefin content were found to decrease with increasing CO conversion in the range of 12-94%. The observed results are consistent with water reoxidation of Co during FTS at high conversion. XANES spectroscopy of used catalyst samples displayed spectra consistent with the presence of more CoO at higher CO conversion levels.

W Ma; G Jacobs; Y Ji; T Bhatelia; D Bukur; S Khalid; B Davis

2011-12-31T23:59:59.000Z

234

Energetic ion bombarded Fe/Al multilayers  

SciTech Connect

The utility of ion-assisted deposition is investigated to explore the possibility of counteracting the deficiency of back-reflected current of Ar neutrals in the case of lighter elements such as Al. A range of energetically ion bombarded Fe/Al multilayers sputtered with applied surface bias of 0, -200, or -400 V were deposited onto Si(111) substrates in an argon atmosphere of 4 mTorr using a computer controlled dc magnetron sputtering system. Grazing incidence reflectivity and rocking curve scans by synchrotron x rays of wavelength of 1.38 A were used to investigate the structures of the interfaces produced. Substantial evidence has been gathered to suggest the gradual suppression of interfacial mixing and reduction in interfacial roughness with increases of applied bias. The densification of the Al microstructure was noticeable and may be a consequence of resputtering attributable to the induced ion bombardment. The average interfacial roughnesses were calculated for the 0, -200, and -400 V samples to be 7{+-}0.5, 6{+-}0.5, and 5{+-}0.5 A respectfully demonstrating a 30% improvement in interface quality. Data from rocking curve scans point to improved long-range correlated roughness in energetically deposited samples. The computational code based on the recursive algorithm developed by Parratt [Phys. Rev. 95, 359 (1954)] was successful in the simulation of the specular reflectivity curves.

Al-Busaidy, M.S.; Crapper, M.D. [College Science, Physics Department, Sultan Qaboos University, P.O. Box 36, Al-Khod 123 (Oman); Department of Physics, Loughborough University, Loughborough (United Kingdom)

2006-05-15T23:59:59.000Z

235

FE DOCKET NO. 11-59-LNG | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

FE DOCKET NO. 11-59-LNG FE DOCKET NO. 11-59-LNG FE DOCKET NO. 11-59-LNG ORDER NO. 3324 CONDITIONALLY GRANTING LONG-TERM MULTI-CONTRACT AUTHORIZATION TO EXPORT LIQUEFIED NATURAL GAS BY VESSEL FROM THE LAKE CHARLES TERMINAL TO NON-FREE TRADE AGREEMENT NATIONS Based on a review of the complete record and for the reasons set forth below, DOE/FE has concluded that the opponents of the Lake Charles Exports, LLC (LCE) Application have not demonstrated that the requested authorization will be inconsistent with the public interest. As described below, we find that the exports proposed in this Application are likely to yield net economic benefits to the United States. Accordingly, for this and other reasons set forth below, we are conditionally granting the LCE Application, subject to satisfactory completion of environmental review and

236

Multi-Time Scaling Crystal Plasticity FE Models Dwell Fatigue ...  

Science Conference Proceedings (OSTI)

First Principles Modeling of Shape Memory Alloy Magnetic Refrigeration Materials ... of Lithium Battery Materials LiMPO4 (M = Mn, Fe, Co, and Ni): A Comparative ... Forming-Crush Simulation Optimization Using Internal State Variable Model.

237

Santa Fe Community College offers new welding program  

NLE Websites -- All DOE Office Websites (Extended Search)

The U.S. Department of Labor expects the need for welders, cutters, solderers, and brass workers to increase by 15% by 2020. "We believe that Santa Fe Community College needs...

238

Multiferroic Properties in AlFeO 3 Ceramics  

Science Conference Proceedings (OSTI)

... in an oxygen flow to obtain the single phase AlFeO3 samples. ... Ceramic-polymer 0-3 Composites-optimized Selection of Materials for the High Frequency Applications ... Composites for Biodegradable Separator Membrane.

239

Fast neutron Damage Studies on NdFeB Materials  

E-Print Network (OSTI)

High-Level Dosimeters used in the SLAC Photon andNeutron Fields”, SLAC-PUB-8517, 2002. [7] G. Gross, J.SLAC-PUB-11219 May2005 Fast Neutron Damage Studies on NdFeB

2005-01-01T23:59:59.000Z

240

High Bs-FeSiBPCu Nanocrystalline Soft Magnetic Alloys ...  

Science Conference Proceedings (OSTI)

The new FeSiBPCu nanocrystalline materials with lower materials cost due to absence of rare-metals are expected to not only contribute to energy-saving and  ...

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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
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241

Grain Boundary Micromagnetism Characterization of Nd-Fe-B ...  

Science Conference Proceedings (OSTI)

Symposium, Magnetic Materials for Energy Applications -III. Presentation Title ... Advances in Rare-earth Free Permanent Magnets · Anisotropic ... Performance and Endurance of Nd-Fe-B Sintered Magnets in E-Motor Application Conditions.

242

Feasibility of band gap engineering of pyrite FeS?  

E-Print Network (OSTI)

We use first-principles computations to investigate whether the band gap of pyrite FeS? can be increased by alloying in order to make it a more effective photovoltaic material. In addition to the isostructural compounds ...

Sun, Ruoshi

243

Hydrogen-Vacancy Interactions in Fe-C Alloys  

E-Print Network (OSTI)

Energetics and concentrations of hydrogen-containing point defect clusters (PDCs) in Fe-C alloys are calculated and cast into a PDC dominance diagram. Because of the strong binding effects of iron vacancies on the stability ...

Yip, Sidney

244

Electrochemical Model of the Fe/V Redox Flow Battery  

Science Conference Proceedings (OSTI)

This paper presents a mathematical model for the new Fe/V redox flow battery chemistry. The model is designed to be useful for stack development and cost analysis purposes.

Stephenson, David E.; Kim, Soowhan; Chen, Feng; Thomsen, Edwin C.; Viswanathan, Vilayanur V.; Wang, Wei; Sprenkle, Vincent L.

2012-11-05T23:59:59.000Z

245

Electrochemically Preparing of Ni-Fe Alloys in Molten Sodium ...  

Science Conference Proceedings (OSTI)

A Pilot-plant Scale Test of Coal-based Rotary Kiln Direct Reduction of Laterite Ore for Fe-Ni Production · A Pilot-plant Scale Test on DRI Preparation from ...

246

FE DOCKET NO. 10-161-LNG | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

FE DOCKET NO. 10-161-LNG FE DOCKET NO. 10-161-LNG FE DOCKET NO. 10-161-LNG ORDER CONDITIONALLY GRANTING LONG-TERM MULTI-CONTRACT AUTHORIZATION TO EXPORT LIQUEFIED NATURAL GAS BY VESSEL FROM THE FREEPORT LNG TERMINAL ON QUINTANA ISLAND, TEXAS TO NON-FREE TRADE AGREEMENT NATIONS Based on a review of the complete record and for the reasons set forth below, DOE/FE has concluded that the opponents of the FLEX Application have not demonstrated that the requested authorization would be inconsistent with the public interest. As further described below, we find that the exports proposed in this Application are likely to yield net economic benefits to the United States. We further find that granting the requested authorization is unlikely to affect adversely the availability of natural gas supplies to domestic consumers or result in natural gas price increases

247

Iron Corrosion Observations: Pu(VI)-Fe Reduction Studies  

Science Conference Proceedings (OSTI)

Iron and Pu Reduction: (1) Very different appearances in iron reaction products were noted depending on pH, brine and initial iron phase; (2) Plutonium was associated with the Fe phases; (3) Green rust was often noted at the higher pH; (4) XANES established the green rust to be an Fe2/3 phase with a bromide center; and (5) This green rust phase was linked to Pu as Pu(IV).

Reed, Donald T. [Los Alamos National Laboratory; Swanson, Juliet S. [Los Alamos National Laboratory; Richmann, Michael K. [Los Alamos National Laboratory; Lucchini, Jean-Francois [Los Alamos National Laboratory; Borkowski, Marian [Los Alamos National Laboratory

2012-09-11T23:59:59.000Z

248

Demonstration of Security Benefits of Renewable Generation at FE Warren Air Force Base  

DOE Green Energy (OSTI)

Report detailing field demonstration of security benefits of renewable generation at FE Warren Air Force Base.

Warwick, William M.; Myers, Kurt; Seifert, Gary

2010-12-31T23:59:59.000Z

249

MAS NMR Study of the Metastable Solid Solution Found in the LiFePO4...  

NLE Websites -- All DOE Office Websites (Extended Search)

MAS NMR Study of the Metastable Solid Solution Found in the LiFePO4FePO4 Sustem Title MAS NMR Study of the Metastable Solid Solution Found in the LiFePO4FePO4 Sustem Publication...

250

Infrared [Fe II] and Dust Emissions from Supernova Remnants  

E-Print Network (OSTI)

Supernova remnants (SNRs) are strong thermal emitters of infrared radiation. The most prominent lines in the near-infrared spectra of SNRs are [Fe II] lines. The [Fe II] lines are from shocked dense atomic gases, so they trace SNRs in dense environments. After briefly reviewing the physics of the [Fe II] emission in SNR shocks, I describe the observational results which show that there are two groups of SNRs bright in [Fe II] emission: middle-aged SNRs interacting with molecular clouds and young core-collapse SNRs in dense circumstellar medium. The SNRs belonging to the former group are also bright in near-infrared H$_2$ emission, indicating that both atomic and molecular shocks are pervasive in these SNRs. The SNRs belonging to the latter group have relatively small radii in general, implying that most of them are likely the remnants of SN IIL/b or SN IIn that had strong mass loss before the explosion. I also comment on the "[Fe II]-H$_2$ reversal" in SNRs and on using the [Fe II]-line luminosity as an indic...

Koo, Bon-Chul

2013-01-01T23:59:59.000Z

251

Oxide Melt Solution Calorimetry of Fe2+ -bearing Oxides and Application to the Magnetite - Maghemite (Fe3O4-Fe8/3O4) system  

Science Conference Proceedings (OSTI)

A consistent methodology for obtaining enthalpy of formation of Fe{sup 2+}-containing binary and multicomponent oxides using high temperature oxide melt solution calorimetry has been developed. The enthalpies of wuestite (FeO) and magnetite (Fe{sub 3}O{sub 4}) oxidation to hematite (Fe{sub 2}O{sub 3}) were measured using oxidative drop solution calorimetry in which the final product is dissolved ferric oxide. Two methods were applied: drop solution calorimetry at 1073 K in lead borate solvent and at 973 K in sodium molybdate, each under both oxygen flowing over and bubbling through the solvent, giving consistent results in agreement with literature values. The enthalpies of formation of all three iron oxides from the elements were obtained using a thermodynamic cycle involving the directly measured oxidative dissolution enthalpy of iron metal in sodium molybdate at 973 K and gave excellent consistency with literature data. The methodology was then applied to the magnetite - maghemite system. The enthalpy of mixing of the Fe{sub 3}O{sub 4}-Fe{sub 8/3}O{sub 4} spinel solid solution is exothermic and, 2 represented by a subregular (Margules) formalism, {Delta}H{sub mix} = x(1-x)(-63.36 {+-} 8.60(1-x) + 17.65 {+-} 6.40x) kJ/mol, where x is the mole fraction of magnetite. The entropies of mixing of the solid solution were calculated for different assumptions about the distribution of cations, charges, and vacancies in these defect spinels. The different models lead to only small differences in the entropy of mixing. Calculated free energies of mixing show no evidence for a solvus in the magnetite - maghemite system.

Lilova, Kristina I.; Xu, Fen; Rosso, Kevin M.; Pearce, Carolyn I.; Kamali, Saeed; Navrotsky, Alexandra

2012-01-01T23:59:59.000Z

252

Role of structural Fe in nontronite NAu-1 and dissolved Fe(II) in redox transformations of arsenic and antimony  

SciTech Connect

Oxidation state is a major factor affecting the mobility of arsenic (As) and antimony (Sb) in soil and aquatic systems. Metal (hydr)oxides and clay minerals are effective sorbents, and may also promote redox reactions on their surfaces via direct or indirect facilitation of electron transfer. Iron substituted for Al in the octahedral sites of aluminosilicate clay minerals has the potential to be in variable oxidation states and is a key constituent of electron transfer reactions in clay minerals. This experimental work was conducted to determine whether structural Fe in clays can affect the oxidation state of As and Sb adsorbed at the clay surface. Another goal of our study was to compare the reactivity of clay structural Fe(II) with systems containing Fe(II) present in dissolved/adsorbed forms. The experimental systems included batch reactors with various concentrations of As(III), Sb(III), As(V), or Sb(V) equilibrated with oxidized (NAu-1) or partially reduced (NAu-1-Red) nontronite, hydrous aluminum oxide (HAO) and kaolinite (KGa-1b) suspensions under oxic and anoxic conditions. The reaction times ranged from 0.5 to 720 h, and pH was constrained at 5.5 (for As) and at 5.5 or 8.0 (for Sb). The oxidation state of As and Sb in the liquid phase was determined by liquid chromatography in line with an inductively coupled plasma mass spectrometer, and in the solid phase by X-ray absorption spectroscopy. Our findings show that structural Fe(II) in NAu-1-Red was not able to reduce As(V)/Sb(V) under the conditions examined, but reduction was seen when aqueous Fe(II) was present in the systems with kaolinite (KGa-1b) and nontronite (NAu-1). The ability of the structural Fe in nontronite clay NAu-1 to promote oxidation of As(III)/Sb(III) was greatly affected by its oxidation state: if all structural Fe was in the oxidized Fe(III) form, no oxidation was observed; however, when the clay was partially reduced ({approx}20% of structural Fe was reduced to Fe(II)), NAu-1-Red promoted the most extensive oxidation under both oxic and anoxic conditions. Electron balance considerations suggest that structural Fe(III) in the NAu-1-Red was the sole oxidant in the anoxic setup, while dissolved O{sub 2} also contributes in oxic conditions. Long-term batch experiments revealed the complex dynamics of As aqueous speciation in anoxic and oxic systems when reduced arsenic was initially added: rapid disappearance of As(III) was observed due to oxidation to As(V) followed by a slow increase of aqueous As(III). This behavior is explained by two reactions: fast initial oxidation of As(III) by structural Fe(III) (anoxic) or Fe(III) and dissolved O2 (oxic) followed by the slow reduction of As(V) by dissolved Fe(II). The resulting re-mobilization of As due to As(V) reduction by aqueous Fe(II) occurs on time scales on the order of days. These reactions are likely significant in a natural soil or aquifer environment with seasonal cycling or slightly reducing conditions with an abundance of clay minerals and dissolved Fe(II).

Ilgen, Anastasia G.; Foster, Andrea L.; Trainor, Thomas P. (Alaska Fairbanks); (USGS)

2012-11-01T23:59:59.000Z

253

First principles calculation of finite temperature magnetism in Fe and Fe3C  

SciTech Connect

Density functional calculations have proven to be a useful tool in the study of ground state properties of many materials. The investigation of finite temperature magnetism, on the other hand, has to rely usually on the usage of empirical models that allow the large number of evaluations of the systems Hamiltonian that are required to obtain the phase space sampling needed to obtain the free energy, specific heat, magnetization, susceptibility, and other quantities as function of temperature. We have demonstrated a solution to this problem that harnesses the computational power of today s large massively parallel computers by combining a classical Wang Landau Monte-Carlo calculation [F. Wang and D. P. Landau, Phys. Rev. Lett. 86, 2050 (2001)] with our first principles multiple scattering electronic structure code [Y. Wang et al., Phys. Rev. Lett. 75, 2867 (1995)] that allows the energy calculation of constrained magnetic states [M. Eisenbach et al., Proceedings of the Conference on High Performance Computing, Networking, Storage and Analysis (ACM, New York, 2009)]. We present our calculations of finite temperature properties of Fe and Fe3C using this approach and we find the Curie temperatures to be 980 and 425K, respectively. VC2011 American Institute of Physics. [doi:10.1063/1.3562218

Eisenbach, Markus [ORNL; Nicholson, Don M [ORNL; Rusanu, Aurelian [ORNL; Brown, Greg [ORNL

2011-01-01T23:59:59.000Z

254

Heterogeneous Reduction of PuO2 with Fe(II): Importance of the Fe(III) Reaction Product  

Science Conference Proceedings (OSTI)

Abstract Heterogeneous reduction of actinides in higher and more soluble oxidation states to lower more insoluble oxidation states by reductants such as Fe(II) has been the subject of intensive study for more than two decades. However, Fe(II)-induced reduction of sparingly soluble Pu(IV) to the more soluble lower oxidation state Pu(III) has been much less studied even though such reactions can potentially increase the mobility of Pu in the subsurface. Thermodynamic calculations are presented that show how differences in the free energy of various possible solid-phase Fe(III) reaction products can greatly influence aqueous Pu(III) concentrations resulting from reduction of PuO2(am) by Fe(II). We present the first experimental evidence that reduction of PuO2(am) to Pu(III) by Fe(II) was enhanced when the Fe(III) mineral goethite was spiked into the reaction. The effect of goethite on reduction of Pu(IV) was demonstrated by measuring the time-dependence of total aqueous Pu concentration, its oxidation state, and system pe/pH. We also re-evaluated established protocols for determining Pu(III) [(Pu(III) + Pu(IV)) - Pu(IV)] by using thenoyltrifluoroacetone (TTA) in toluene extractions; the study showed that it is important to eliminate dissolved oxygen from the TTA solutions for accurate determinations. More broadly, this study highlights the importance of the Fe(III) reaction product in actinide reduction rate and extent by Fe(II).

Felmy, Andrew R.; Moore, Dean A.; Rosso, Kevin M.; Qafoku, Odeta; Rai, Dhanpat; Buck, Edgar C.; Ilton, Eugene S.

2011-05-01T23:59:59.000Z

255

Composition-Mediated Order-Disorder Transformation in FePt Nanoparticles  

SciTech Connect

Thumbnail image of graphical abstract Heat-treated alloy FePt nanoparticles transform into L10 FePt and mixed L10/L12 FePt3 intermetallic phases. Enrichment in Pt in some nanoparticles, rather than intrinsic thermodynamic effects, drives phase segregation. FePt nanoparticles of uniform, equimolar composition are expected to transform into phase-pure, highly ordered L10 FePt nanoparticles.

Johnston-Peck, Aaron C [ORNL; Cullen, David A [ORNL; Tracy, Joseph B [North Carolina State University

2013-01-01T23:59:59.000Z

256

Spectroscopic Elucidation of First Steps of Supported Bimetallic Cluster Formation  

DOE Green Energy (OSTI)

Initial steps of bimetallic Ru-Os cluster formation on MgO in the presence of H{sub 2} are analyzed by EXAFS and IR spectroscopy. Ru-Os bond formation takes place after decarbonylation of Ru{sub 3} clusters and subsequently, at higher temperatures, of Os{sub 3} clusters to generate coordinative unsaturation.

Kulkarni, A.; Gates, B.C.; (UCD)

2009-12-23T23:59:59.000Z

257

Mtr Extracellular Electron Transfer Pathways in Fe(III)-reducing or Fe(II)-oxidizing Bacteria: A Genomic Perspective  

Science Conference Proceedings (OSTI)

Originally discovered in the dissimilatory metal-reducing bacterium Shewanella oneidensis MR-1 (MR-1), the Mtr (i.e., metal-reducing) pathway exists in all characterized strains of metal-reducing Shewanella. The protein components identified to date for the Mtr pathway of MR-1 include four multi-heme c-type cytochromes (c-Cyts), CymA, MtrA, MtrC and OmcA, and a porin-like, outer membrane protein MtrB. They are strategically positioned along the width of the MR-1 cell envelope to mediate electron transfer from the quinone/quinol pool in the inner-membrane to the Fe(III)-containing minerals external to the bacterial cells. A survey of microbial genomes revealed homologues of the Mtr pathway in other dissimilatory Fe(III)-reducing bacteria, including Aeromonas hydrophila, Ferrimonas balearica and Rhodoferax ferrireducens, and in the Fe(II)-oxidizing bacteria Dechloromonas aromatica RCB, Gallionella capsiferriformans ES-2 and Sideroxydans lithotrophicus ES-1. The widespread distribution of Mtr pathways in Fe(III)-reducing or Fe(II)-oxidizing bacteria emphasizes the importance of this type of extracellular electron transfer pathway in microbial redox transformation of Fe. Their distribution in these two different functional groups of bacteria also emphasizes the bi-directional nature of electron transfer reactions carried out by the Mtr pathways. The characteristics of the Mtr pathways may be shared by other pathways used by microorganisms for exchanging electrons with their extracellular environments.

Shi, Liang; Rosso, Kevin M.; Zachara, John M.; Fredrickson, Jim K.

2012-12-01T23:59:59.000Z

258

Campbell penetration depth in Fe-based superconductors  

Science Conference Proceedings (OSTI)

A 'true' critical current density, j{sub c}, as opposite to commonly measured relaxed persistent (Bean) current, j{sub B}, was extracted from the Campbell penetration depth, {lambda}{sub c}(T,H) measured in single crystals of LiFeAs, and optimally electron-doped Ba(Fe{sub 0.954}Ni{sub 0.046}){sub 2}As{sub 2} (FeNi122). In LiFeAs, the effective pinning potential is nonparabolic, which follows from the magnetic field - dependent Labusch parameter {alpha}. At the equilibrium (upon field - cooling), {alpha}(H) is non-monotonic, but it is monotonic at a finite gradient of the vortex density. This behavior leads to a faster magnetic relaxation at the lower fields and provides a natural dynamic explanation for the fishtail (second peak) effect. We also find the evidence for strong pinning at the lower fields.The inferred field dependence of the pinning potential is consistent with the evolution from strong pinning, through collective pinning, and eventually to a disordered vortex lattice. The value of j{sub c}(2 K) {approx_equal} 1.22 x 10{sup 6} A/cm{sup 2} provide an upper estimate of the current carrying capability of LiFeAs. Overall, vortex behavior of almost isotropic, fully-gapped LiFeAs is very similar to highly anisotropic d-wave cuprate superconductors, the similarity that requires further studies in order to understand unconventional superconductivity in cuprates and pnictides. In addition to LiFeAs, we also report the magnetic penetration depth in BaFe{sub 2}As{sub 2} based superconductors including irradiation of FeNi122. In unirradiated FeNi122, the maximum critical current value is, j{sub c}(2K) {approx_equal} 3.3 x 10{sup 6} A/cm{sup 2}. The magnetic-dependent feature was observed near the transition temperature in FeTe{sub 0.53}Se{sub 0.47} and irradiated FeNi122. Because of this feature, further studies are required in order to properly calibrate the Campbell penetration depth. Finally, we detected the crossing between the magnetic penetration depth and London penetration depth in optimally hold-doped Ba{sub 0.6}K{sub 0.4}Fe{sub 2}As{sub 2} (BaK122) and isovalent doped BaFe{sub 2}(As{sub 0.7}P{sub 0.3}){sub 2} (BaP122). These phenomena probably coincide with anomalous Meissner effect reported in pnicitde superconductors [Prozorov et al. (2010b)] however more studies are needed in order to clarify this.

Prommapan, Plegchart

2011-08-15T23:59:59.000Z

259

Dual and Triple Ion-Beam Irradiations of Fe, Fe(Cr) and Fe(Cr)-ODS Final Report: IAEA SMoRE CRP  

DOE Green Energy (OSTI)

Structures of nanoparticles in Fe-16Cr-4.5Al-0.3Ti-2W-0.37Y2O3 (K3) and Fe-20Cr-4.5Al-0.34Ti-0.5Y2O3 (MA956) oxide dispersion strengthened (ODS) ferritic steels produced by mechanical alloying (MA) and followed by hot extrusion have been studied using high-resolution transmission electron microscopy (HRTEM) techniques to gain insight about the formation mechanism of nanoparticles in MA/ODS steels. The observations of Y-Al-O complex-oxide nanoparticles in both ODS steels imply that decomposition of Y2O3 in association with internal oxidation of Al occurred during mechanical alloying. While the majority of oxide nanoparticles formed in both steels is Y4Al2O9, a few oxide particles of YAlO3 are also occasionally observed. These results reveal that Ti (0.3 wt %) plays an insignificant role in forming oxide nanoparticles in the presence of Al (4.5 wt %). HRTEM observations of crystalline nanoparticles larger than {approx}2 nm and amorphous or disordered cluster domains smaller than {approx}2 nm provide an insight into the formation mechanism of oxide nanoparticle in MA/ODS steels, which we believe from our observations involves a solid-state amorphous precursor followed by recrystallization. Dual ion-beam irradiations using He{sup +} + Fe{sup +8} ions were employed to gain more detailed insight about the role of nanoparticles in suppressing radiation-induced swelling. This is elaborated through TEM examinations of cavity distributions in ion-irradiated Fe-14Cr and K3-ODS ferritic steels. HRTEM observations of helium-filled cavities (helium bubbles) preferably trapped at nanoscale oxide particles and clusters in ion-irradiated K3-ODS are presented. Finally, we describe the results from triple ion-beam irradiations using H{sup +} + He{sup +} + Fe{sup +8} ions to emulate fusion first wall radiation effects. Preliminary work is reported that confirms the existence of significant hydrogen synergistic effects described earlier by Tanaka et al., for Fe(Cr) and by Wakai et al., for F82H reduced activation ferritic martensitic (RAF/M) steel. These previous results combined with our data suggest a complex new 'catalytic' mechanism whereby H interacts with the steady state population of defects and the embryonic cavities so as to accelerated cavity (void) growth in both Fe(Cr) and under special conditions in ODS steels.

Fluss, M J; Hsiung, L L; Marian, J

2011-11-20T23:59:59.000Z

260

Microporous Separators for Fe/V Redox Flow Batteries  

Science Conference Proceedings (OSTI)

The Fe/V redox flow battery has demonstrated promising performance that is advantageous over other redox flow battery systems. The less oxidative nature of the Fe(III) species enables use of hydrocarbon - based ion exchange membranes or separators. Daramic(reg. sign) microporous polyethylene separators were tested on Fe/V flow cells using the sulphuric/chloric mixed acid - supporting electrolytes. Among them, Daramic(reg. sign) C exhibited good flow cell cycling performance with satisfactory repeatability over a broad temperature range of 5 - 50 degrees C. Energy efficiency (EE) of C remains above 67% at current densities of 50 - 80 cm{sup -2} in the temperature range from room temperature to 50 degrees C. The capacity decay problem could be circumvented through hydraulic pressure balancing by applying different pump rates to the positive and negative electrolytes. Stable capacity and energy were obtained over 40 cycles at room temperature and 40 degrees C. These results manifest that the extremely low-cost separators ($10/cm2) are applicable in the Fe/V flow battery system at an acceptable sacrifice of energy efficiency. This stands for a remarkable breakthrough in significant reduction of the capital cost of the Fe/V flow battery system, and is promising to promote its market penetration in grid stabilization and renewable integration.

Wei, Xiaoliang; Li, Liyu; Luo, Qingtao; Nie, Zimin; Wang, Wei; Li, Bin; Xia, Guanguang; Miller, Eric; Chambers, Jeff; Yang, Zhenguo

2012-06-28T23:59:59.000Z

Note: This page contains sample records for the topic "fe ru os" 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

Alternative Fuels Data Center: Santa Fe Metro Fleet Runs on Natural Gas  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Santa Fe Metro Fleet Santa Fe Metro Fleet Runs on Natural Gas to someone by E-mail Share Alternative Fuels Data Center: Santa Fe Metro Fleet Runs on Natural Gas on Facebook Tweet about Alternative Fuels Data Center: Santa Fe Metro Fleet Runs on Natural Gas on Twitter Bookmark Alternative Fuels Data Center: Santa Fe Metro Fleet Runs on Natural Gas on Google Bookmark Alternative Fuels Data Center: Santa Fe Metro Fleet Runs on Natural Gas on Delicious Rank Alternative Fuels Data Center: Santa Fe Metro Fleet Runs on Natural Gas on Digg Find More places to share Alternative Fuels Data Center: Santa Fe Metro Fleet Runs on Natural Gas on AddThis.com... June 8, 2010 Santa Fe Metro Fleet Runs on Natural Gas " CNG buses are reliable, have cleaner-burning engines, offer increased oil life, and have lower fuel costs than diesel.

262

Fe-doped InN layers grown by molecular beam epitaxy  

Science Conference Proceedings (OSTI)

Iron(Fe)-doped InN (InN:Fe) layers have been grown by molecular beam epitaxy. It is found that Fe-doping leads to drastic increase of residual electron concentration, which is different from the semi-insulating property of Fe-doped GaN. However, this heavy n-type doping cannot be fully explained by doped Fe-concentration ([Fe]). Further analysis shows that more unintentionally doped impurities such as hydrogen and oxygen are incorporated with increasing [Fe] and the surface is degraded with high density pits, which probably are the main reasons for electron generation and mobility reduction. Photoluminescence of InN is gradually quenched by Fe-doping. This work shows that Fe-doping is one of good choices to control electron density in InN.

Wang Xinqiang; Liu Shitao; Ma Dingyu; Zheng Xiantong; Chen Guang; Xu Fujun; Tang Ning; Shen Bo [State Key Laboratory of Artificial Microstructure and Mesoscopic Physics, School of Physics, Peking University, Beijing 100871 (China); Zhang Peng; Cao Xingzhong; Wang Baoyi [State Key Laboratory of Nuclear Analysis Techniques, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049 (China); Huang Sen; Chen, Kevin J. [Department of Electronic and Computer Engineering, Hong Kong University of Science and Technology (Hong Kong); Zhou Shengqiang [Institute of Ion Beam Physics and Materials Research, Helmholtz-Zentrum Dresden-Rossendorf (HZDR), 01314 Dresden (Germany); Yoshikawa, Akihiko [Center for SMART Green Innovation Research, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522 (Japan)

2012-10-22T23:59:59.000Z

263

Crystal fields, disorder, and antiferromagnetic short-range order in (Yb{sub 0.24}Sn{sub 0.76})Ru  

SciTech Connect

We report extensive measurements on a new compound (Yb{sub 0.24}Sn{sub 0.76})Ru that crystallizes in the cubic CsCl structure. Valence band photoemission and L{sub 3} x-ray absorption show no divalent component in the 4f configuration of Yb. Inelastic neutron scattering (INS) indicates that the eight-fold degenerate J-multiplet of Yb{sup 3+} is split by the crystalline electric field (CEF) into a ?{sub 7} doublet ground state and a ?{sub 8} quartet at an excitation energy 20 meV. The magnetic susceptibility can be fit very well by this CEF scheme under the assumption that a ?{sub 6} excited state resides at 32 meV; however, the ?{sub 8}/?{sub 6} transition expected at 12 meV was not observed in the INS. The resistivity follows a Bloch-Grüneisen law shunted by a parallel resistor, as is typical of systems subject to phonon scattering with no apparent magnetic scattering. All of these properties can be understood as representing simple local moment behavior of the trivalent Yb ion. At 1 K, there is a peak in specific heat that is too broad to represent a magnetic phase transition, consistent with absence of magnetic reflections in neutron diffraction. On the other hand, this peak also is too narrow to represent the Kondo effect in the ?{sub 7} ground state doublet. On the basis of the field-dependence of the specific heat, we argue that antiferromagnetic shortrange order (possibly co-existing with Kondo physics) occurs at low temperatures. The long-range magnetic order is suppressed because the Yb site occupancy is below the percolation threshold for this disordered compound.

Klimczuk, T.; Wang, C. H.; Lawrence, J. M.; Xu, Q.; Durakiewicz, T.; Ronning, F.; Llobet, A.; Trouw, F.; Kurita, N.; Tokiwa, Y.; Lee, Han-oh; Booth, C. H.; Gardner, J. S.; Bauer, E. D.; Joyce, J. J.; Zandbergen, H. W.; Movshovich, R.; Cava, R. J.; Thompson, J. D.

2011-07-18T23:59:59.000Z

264

Kinetics and mechanisms of the reactions of alkyl radicals with oxygen and with complexes of Co(III), Ru(III), and Ni(III)  

Science Conference Proceedings (OSTI)

The kinetics of the reactions of C{sub 2}H{sub 5} radical with Co(NH{sub 3}){sub 5}X{sup 2+}, Ru(NH{sub 3}){sub 5}X{sup 2+}, and Co(dmgH){sub 2} (X) (Y) (X = Br, Cl, N{sub 3}, SCN; Y = H{sub 2}O, CH{sub 3}CN) complexes were studied using laser flash photolysis of ethylcobalt complexes. The kinetics were obtained by the kinetic probe method. Some relative rate constants were also determined by a competition method based on ethyl halide product ratios. The kinetics of colligation reactions of a series of alkyl radicals with {beta}-Ni(cyclam){sup 2+} were studied using flaser flash photolysis of alkylcobalt complexes. Again, the kinetics were obtained by employing the kinetic probe competition method. The kinetics of the unimolecular homolysis of a series of RNi(cyclam)H{sub 2}O{sup 2+} were studied. Activation parameters were obtained for the unimolecular homolysis of C{sub 2}H{sub 5}Ni(cyclam)H{sub 2}O{sup 2+}. Kinetic and thermodynamic data obtained from these reactions were compared with those for the {sigma}-bonded organometallic complexes. The kinetics of the unimolecular homolysis of a series of RNi(cyclam)H{sub 2}O{sup 2+} complexes were studied by monitoring the formation of the oxygen insertion product RO{sub 2}Ni(cyclam)H{sub 2}O{sup 2+}. The higher rate constants for the reactions of alkyl radicals with oxygen in solution, as compared with those measured in the gas phase, were discussed. 30 refs.

Kelley, D.

1990-10-08T23:59:59.000Z

265

Los Alamos National Security invests in Santa Fe Community College  

NLE Websites -- All DOE Office Websites (Extended Search)

Santa Fe Community College Foundation Santa Fe Community College Foundation Los Alamos National Security invests in Santa Fe Community College Foundation The new center is an educational and training facility for alternative energy and green jobs. July 16, 2009 Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable energy sources, to plasma physics and new materials. Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable energy sources, to plasma physics and new materials. Contact Steve Sandoval

266

AgFe Management Ltd | Open Energy Information  

Open Energy Info (EERE)

AgFe Management Ltd AgFe Management Ltd Jump to: navigation, search Name AgFe Management Ltd Place London, England, United Kingdom Zip W11 1QF Product London-based, Financial Asset Management and Advisory firm. Coordinates 51.506325°, -0.127144° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":51.506325,"lon":-0.127144,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

267

Visiting With Santa Fe Small Business Owners | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Visiting With Santa Fe Small Business Owners Visiting With Santa Fe Small Business Owners Visiting With Santa Fe Small Business Owners May 10, 2012 - 9:02am Addthis Dot Harris Dot Harris The Honorable Dot Harris, Director, Office of Economic Impact and Diversity You've got to do your homework in order to contract with the federal government. Whether you are a large or small business owner, learning the ins and outs of government contracting takes dedication, perseverance, and taking advantage of opportunities to meet face-to-face with procurement experts and other businesses. That's where our Small Business Roundtables, Business Opportunity Sessions, conference booths, and Regional Small Business Summits come in. We want to meet directly with small business owners, managers, and staffers, to hear what you need to learn from us to make the contracting

268

FE Implementation of the Recovery Act | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

FE Implementation of the Recovery Act FE Implementation of the Recovery Act FE Implementation of the Recovery Act The American Recovery and Reinvestment Act of 2009 (Recovery Act) was signed into law by President Obama on February 17th, 2009. It is an unprecedented effort to jumpstart our economy, create or save millions of jobs, and put a down payment on addressing long-neglected challenges so our country can thrive in the 21st century. As the centerpiece of the President's commitment to transparency and accountability, this site will feature projections for how, when, and where the Office of Fossil Energy funds will be spent. The Office of Fossil Energy has received $3.4 billion from the Recovery Act. Initiatives will focus on research, development and deployment of technologies to use coal more cleanly and efficiently. Investments will go

269

Santa Fe, New Mexico: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Fe, New Mexico: Energy Resources Fe, New Mexico: Energy Resources (Redirected from Santa Fe, NM) Jump to: navigation, search Equivalent URI DBpedia Coordinates 35.6869752°, -105.937799° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":35.6869752,"lon":-105.937799,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

270

U.S. DOE FE Fuel Cell Program  

NLE Websites -- All DOE Office Websites (Extended Search)

FE Fuel Cell Program FE Fuel Cell Program DOE Hydrogen and Fuel Cells Coordination Meeting June 2, 2003 Sam Biondo, 35910 FY 2001 Actual FY 2002 Actual FY 2003 Enacted* FY 2004 Budget Description Fossil Energy (FE) Fule Cells Distributed Generation System s Innovative Systems Concepts 3,789 26,484 33,779 23,500 Continue to develop and test six SECA industry team concept designs for prototype low -to-high temperature, $400/kW systems and continue the supporting SECA Core Technology program. Fuel Cell Systems Development 30,172 13,147 9,935 6,000 Conduct re-directed program on advanced systems development and testing. These advanced systems include zero emission and hybrid systems. Also includes various stack designs under SECA and adaptation of SECA for syngas and diesel. Vision 21 Hybrid

271

Growth sequence and interface formation in the Fe/MgO/Fe(001) tunnel junction analyzed by surface x-ray diffraction  

Science Conference Proceedings (OSTI)

We present a surface x-ray diffraction study of the interface geometric structure in the Fe/MgO/Fe(001) magnetic tunnel junction (MTJ). While the lower MgO/Fe(001) interface is characterized by a substoichiometric FeO{sub x} (x=0.6{+-}0.1) layer in agreement with previous studies, growth of Fe on the MgO spacer and the upper Fe/MgO interface structure strongly depends on the preparation method. If 0.4 monolayers of Fe are initially deposited in ambient oxygen atmosphere (p=10{sup -7} mbar) followed by Fe deposition under ultrahigh-vacuum (UHV) conditions, structural coherence across the trilayer junction is observed. In this case, substoichiometric FeO{sub x} layers are present at both Fe/MgO interfaces corresponding to a symmetric MTJ structure. In contrast, lattice registry is not preserved if Fe deposition is carried out solely under UHV conditions. Our results might have important implications for the preparation of magnetic tunnel junctions optimized to achieve giant tunneling-magnetoresistance amplitudes.

Tusche, C.; Meyerheim, H. L.; Kirschner, J. [Max-Planck-Institut fuer Mikrostrukturphysik, Weinberg 2, D-06120 Halle (Germany); Jedrecy, N. [Institut des NanoSciences de Paris, Universites Paris 6 et 7 et CNRS-UMR 7588, 4 place Jussieu, F-75252 Paris Cedex 05 (France); Renaud, G. [CEA-Grenoble, 17 rue des Martyrs, F-38054 Grenoble (France)

2006-11-15T23:59:59.000Z

272

Fe/Al2O3 C2H4 Hata mm/10 min  

E-Print Network (OSTI)

Fe/Al2O3 C2H4 () () () () () () () * () 1. (SWNT) SWNT (CVD) (CNT)[1] Hata mm/10 min SWNT (Super Growth)[2]Al2O3 Fe C2H4 SWNT Fe/Al2O3 C2H4 CVD SWNT CNT CNT 2 SiO2 Al2O3 20 (RBM) 1350 cm-1 (D-Band)Fe G/D RBM Fe SWNT Al 15 nm Fe 0.6 nm CVD TEM Fig. 3 3 nm SWNT

Maruyama, Shigeo

273

Studies on transition metals and alloy Fischer-Tropsch catalysts, their electronic and bulk properties. (I: Fe/MnO; II: Fe/TiO/sub 2/; III: Fe/Mord. ). Final report, July 1, 1982-September 30, 1983  

DOE Green Energy (OSTI)

The objectives were: (1) to characterize samples D1, 10% FeO/90% MnO, and D2, 48% FeO/52% MnO, under varying conditions of reduction (at 250/sup 0/C or 350/sup 0/C in H/sub 2/) and of syngas reaction 1:1 of CO:H/sub 2/ at 290/sup 0/C) and in some cases use CO only for reduction and to identify species by Moessbauer Spectroscopy and Magnetization (sigma/sub s) measurement; (2) similarly, to see if there is any metal (oxide)/support (Mordenite) interaction by the same techniques. The characterization was carried out with above techniques and the kinetic results for syngas were obtained on the above systems mostly at PETC. During reduction of Fe-oxide/Mn-oxide an intermediate Mn-ferrite phase was detected. After reduction, species such as Fe/sup 0/+Fe/sup 3 +/+Fe/sup 2 +/ in varying total proportions (45% at 290/sup 0/C and Fe/sup 0/+Fe/sup 2 +/ 75% were found at 350/sup 0/C). Syngas conversion showed Fe-carbides (Fe/sub 2/C/sub 2/+Fe/sub 3/C) depending on the reaction conditions, and the composition of D/sub 1/ and D/sub 2/. With the fresh ..gamma..-Fe/sub 2/O/sub 3/ (identified by Moessbauer) on Mordenites with varying ratios of SiO/sub 2//Al/sub 2/O/sub 3/, a decrease in (sigma/sub s/) was found with lowering of the ratios from 60 to 17. At 17% ratio (sigma/sub s/) was smallest and the change in the isomer shift was maximum, which established an interaction with the Broensted cities. 24 figures.

Mulay, L.N.

1983-11-01T23:59:59.000Z

274

The Development of low cost LiFePO4-based high power lithium...  

NLE Websites -- All DOE Office Websites (Extended Search)

Development of low cost LiFePO4-based high power lithium-ion batteries Title The Development of low cost LiFePO4-based high power lithium-ion batteries Publication Type Journal...

275

Comparative Modeling of Li-Ion Cell and LiFePO4 - Programmaster ...  

Science Conference Proceedings (OSTI)

Presentation Title, Comparative Modeling of Li-Ion Cell and LiFePO4 Cell for Automotive ... The cathode active material of a LiFePO4 cell is assumed to undergo ...

276

EA-1188: Chevron U.S.A., Inc. and Santa Fe Energy Resources,...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

88: Chevron U.S.A., Inc. and Santa Fe Energy Resources, Inc. Midway Valley 3D Seismic Project, Kern County, California EA-1188: Chevron U.S.A., Inc. and Santa Fe Energy Resources,...

277

Electron Microscopy Study of the LiFEPO4 to FePo4 Phase Transition  

NLE Websites -- All DOE Office Websites (Extended Search)

Electron Microscopy Study of the LiFEPO4 to FePo4 Phase Transition Title Electron Microscopy Study of the LiFEPO4 to FePo4 Phase Transition Publication Type Journal Article Year of...

278

CoNiFe Alloy Powder Synthesis by High Energy Milling  

Science Conference Proceedings (OSTI)

CoNiFe alloy powder was synthesized by high energy milling of mixtures of Co, Ni and Fe powder as a bulk processing method for producing powder. A milling ...

279

Dilute magnetic semiconductor Cu2FeSnS4 nanocrystals with a novel zincblende structure  

Science Conference Proceedings (OSTI)

Diluted magnetic semiconductor Cu2FeSnS4 nanocrystals with a novel zincblende structure have been successfully synthesized by a hot-injection approach. Cu+, Fe2+, and Sn4+ ions occupy the same position in the ...

Xiaolu Liang; Xianhua Wei; Daocheng Pan

2012-01-01T23:59:59.000Z

280

Influence of lithium on nanosized films of Fe2O3  

Science Conference Proceedings (OSTI)

We have investigated nanosized thin films of ?-Fe2O3 (hematite) and ?-Fe2O3 with addition of Li, by the impedance spectroscopy (IS), the Raman spectroscopy, scanning electron microscopy (SEM), and ...

A. Turkovi?; M. Ivanda; M. Bitenc; Z. Crnjak Orel

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "fe ru os" 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

Microsoft PowerPoint - DE-FE0002402_UTEP_Choudhuri.pptx  

NLE Websites -- All DOE Office Websites (Extended Search)

Project DE-FE0002402 Project DE FE0002402 Title: Investigation on Flame Characteristics and Burner Operability Issues of Oxy-Fuel Combustion p y y University of Texas El Paso y...

282

N2s2 chelating agents as cys-x-cys biomimics for fe(no) and fe(no)2 complexes  

E-Print Network (OSTI)

Nitric oxide plays an important role in many biological functions. A metallo derivative in biological systems is a protein-bound dinitrosyl iron complex (DNIC), which results from iron-sulfur cluster degradation in the presence of excess NO. Through model complexes I have examined the fundamental properties of a dithiolato-Fe(NO)2 complex, bismercaptoethandiazacyclooctane iron dinitrosyl or (H+bme-daco)Fe(NO)2 as a biomimic of dicysteinate coordination of [Fe(NO)2]. This complex was prepared and fully characterized in my studies. The DNIC moiety is in its oxidized state, {Fe(NO)2}9. Through reaction studies, monitored by IR spectroscopy (H+N2S2)Fe(NO)2 (N2S2 = bme-dach. Bme-pda) has been shown to transfer NO to FeIII in (TPP)FeCl (TPP = meso-tetraphenylporphyrin) as NO-. The remaining mononitrosyl converts into complex (N2S2)Fe(NO). The (N2S2)Fe(NO) complexes (N2S2 = bme-daco, bme*-daco, bme-dach) were prepared by direct reaction of dimeric [(N2S2)Fe]2 and NO gas. The analogous (N2S2)Co(NO) complex (N2S2 = bme-dach) has also been prepared. The series of square pyramidal (N2S2)M(NO) have been studied by cyclic voltammetry and ?(NO) IR spectroscopy.

Chiang, Chao-Yi

2003-05-01T23:59:59.000Z

283

Equation of state and phase diagram of FeO  

Science Conference Proceedings (OSTI)

Wuestite, Fe{sub 1-x}O, is an important component in the mineralogy of Earth's lower mantle and may also be a component in the core. Therefore the high pressure, high temperature behavior of FeO, including its phase diagram and equation of state, is essential knowledge for understanding the properties and evolution of Earth's deep interior. We performed X-ray diffraction measurements using a laser-heated diamond anvil cell to achieve simultaneous high pressures and temperatures. Wuestite was mixed with iron metal, which served as our pressure standard, under the assumption that negligible oxygen dissolved into the iron. Our data show a positive slope for the subsolidus phase boundary between the B1 and B8 structures, indicating that the B1 phase is stable at the P-T conditions of the lower mantle and core. We have determined the thermal equation of state of B1 FeO to 156 GPa and 3100 K, finding an isothermal bulk modulus K{sub 0} = 149.4 {+-} 1.0 GPa and its pressure derivative K'{sub 0} = 3.60 {+-} 0.4. This implies that 7.7 {+-} 1.1 wt.% oxygen is required in the outer core to match the seismologically-determined density, under the simplifying assumption of a purely Fe-O outer core.

Fischer, Rebecca A.; Campbell, Andrew J.; Shofner, Gregory A.; Lord, Oliver T.; Dera, Przemyslaw; Prakapenka, Vitali B. (Bristol); (Maryland); (UC)

2012-04-11T23:59:59.000Z

284

Dielectronic recombination of Fe^{13+}: benchmarking the M-shell  

E-Print Network (OSTI)

We have carried-out a series of multi-configuration Breit-Pauli AUTOSTRUCTURE calculations for the dielectronic recombination of Fe^{13+}. We present a detailed comparison of the results with the high-energy resolution measurements reported recently from the Heidelberg Test Storage Ring by Schmidt et al. Many Rydberg series contribute significantly from this initial 3s^2 3p M-shell ion, resulting in a complex recombination `spectrum'. While there is much close agreement between theory and experiment, differences of typically 50% in the summed resonance strengths over 0.1-10 eV result in the experimentally based total Maxwellian recombination rate coefficient being a factor of 1.52-1.38 larger than theory over 10^4-10^5 K, which is a typical temperature range of peak abundance for Fe^{13+} in a photoionized plasma. Nevertheless, this theoretical recombination rate coefficient is an order of magnitude larger than that used by modellers to-date. This may help explain the discrepancy between the iron M-shell ionization balance predicted by photoionization modelling codes such as ION and CLOUDY and that deduced from the iron M-shell unresolved-transition-array absorption feature observed in the X-ray spectrum of many active galactic nuclei. Similar data are required for Fe^{8+} through Fe^{12+} to remove the question mark hanging over the atomic data though.

N. R. Badnell

2006-07-18T23:59:59.000Z

285

New extended atomic data in cool star model atmospheres - Using Kurucz's new iron data in MAFAGS-OS models  

E-Print Network (OSTI)

Context. Cool star model atmospheres are a common tool for the investigation of stellar masses, ages and elemental abundance composition. Theoretical atmospheric models strongly depend on the atomic data used when calculating them. Aims. We present the changes in flux and temperature stratification when changing from iron data computed by R.L. Kurucz in the mid 90s to the Kurucz 2009 iron computations. Methods. MAFAGS-OS opacity sampling atmospheres were recomputed with Kurucz 2009 iron atomic data as implemented in the VALD database by Ryabchikova. Temperature stratification and emergent flux distribution of the new version, called MAFAGS-OS9, is compared to the former version and to solar flux measurements. Results. Using the Kurucz line lists converted into the VALD format and new bound-free opacities for Mg i and Al i leads to changes in the solar temperature stratification by not more than 28 K. At the same time, the calculated solar flux distribution shows significantly better agreement between observat...

Grupp, F; Tan, K

2009-01-01T23:59:59.000Z

286

High strength-high conductivity Cu-Fe composites produced by powder compaction/mechanical reduction  

DOE Patents (OSTI)

A particulate mixture of Cu and Fe is compacted and mechanically reduced to form an ''in-situ'' Cu-Fe composite having high strength and high conductivity. Compaction and mechanical reduction of the particulate mixture are carried out at a temperature and time at temperature selected to avoid dissolution of Fe into the Cu matrix particulates to a harmful extent that substantially degrades the conductivity of the Cu-Fe composite. 5 figures.

Verhoeven, J.D.; Spitzig, W.A.; Gibson, E.D.; Anderson, I.E.

1991-08-27T23:59:59.000Z

287

Novel La(Fe,Si) 13 -Based Composites for Magnetic Refrigeration  

Science Conference Proceedings (OSTI)

Nanocomposite Alloy Design for High Frequency Power Conversion Applications · Novel La(Fe,Si)13-Based Composites for Magnetic Refrigeration.

288

Magnetocaloric Effect in GdFeCo-Based Melt-Spun Ribbons  

Science Conference Proceedings (OSTI)

Nanocomposite Alloy Design for High Frequency Power Conversion Applications · Novel La(Fe,Si)13-Based Composites for Magnetic Refrigeration.

289

High strength-high conductivity Cu--Fe composites produced by powder compaction/mechanical reduction  

DOE Patents (OSTI)

A particulate mixture of Cu and Fe is compacted and mechanically reduced to form an "in-situ" Cu-Fe composite having high strength and high conductivity. Compaction and mechanical reduction of the particulate mixture are carried out at a temperature and time at temperature selected to avoid dissolution of Fe into the Cu matrix particulates to a harmful extent that substantially degrades the conductivity of the Cu-Fe composite.

Verhoeven, John D. (Ames, IA); Spitzig, William A. (Ames, IA); Gibson, Edwin D. (Ames, IA); Anderson, Iver E. (Ames, IA)

1991-08-27T23:59:59.000Z

290

Microstructure evaluation for Dy-free Nd-Fe-B sintered magnets with high coercivity  

Science Conference Proceedings (OSTI)

Nd-Fe-B sinteredmagnets are used for motors of hybrid or electric vehicles due to their high energy products. Dy is added to Nd-Fe-B sinteredmagnets to work in a high temperature environment. Although the addition of Dy decreases the magnetization of Nd-Fe-B magnets

R. Goto; M. Matsuura; S. Sugimoto; N. Tezuka; Y. Une; M. Sagawa

2012-01-01T23:59:59.000Z

291

State Laboratary Contacts OS  

Science Conference Proceedings (OSTI)

... South Dakota. Mailing Address South Dakota Div. of Commercial Inspection & Reg 118 W. Capitol Pierre, SD 57501. Shipping Address Div. ...

2013-06-17T23:59:59.000Z

292

ZeptoOS // Publications  

NLE Websites -- All DOE Office Websites (Extended Search)

Publications K. Yoshii, H. Naik, C. Yu, and P. Beckman, Extending and Benchmarking the Big Memory Implementation on Blue GeneP Linux, In "Proceedings of the 1st Int. Workshop on...

293

ZeptoOS // Projects  

NLE Websites -- All DOE Office Websites (Extended Search)

for, e.g., real-time data streaming. The Selfish Benchmark Suite Massively parallel computers use compute node operating systems that are either special purpose light-weight...

294

ZeptoOS // Team  

NLE Websites -- All DOE Office Websites (Extended Search)

Team Core Team Pete Beckman Pete Beckman Kamil Harish Kamil Iskra Kazutomo Yoshii Harish Naik Collaborators Rusty Lusk Susan Coghlan Rusty Lusk Susan Coghlan Aroon Nataraj Al...

295

Fe K-edge X-ray resonant magnetic scattering from Ba(Fe1?xCox)2As2 superconductors  

SciTech Connect

We present an X-ray resonant magnetic scattering study at the Fe-K absorption edge of the BaFe2As2 compound. The energy spectrum of the resonant scattering, together with our calculation using the full-potential linear-augmented plane wave method with a local density functional suggests that the observed resonant scattering arises from electric dipole (E1) transitions. We discuss the role of Fe K-edge X-ray resonant magnetic scattering in understanding the relationship between the structure and the antiferromagnetic transition in the doped Ba(Fe1?xCox)2As2 superconductors.

Kim, Min Gyu; Kreyssig, Andreas; Lee, Yongbin; McQueeney, Robert J.; Harmon, Bruce N.; Goldman, Alan I.

2012-06-15T23:59:59.000Z

296

Growth Diagram and Magnetic Properties of Hexagonal LuFe2O4 Thin Films  

Science Conference Proceedings (OSTI)

A growth diagram of Lu-Fe-O compounds on an MgO (111) substrate using pulsed laser deposition is constructed according to the experimental data. The LuFe2O4 phase can only be grown in a small range of temperature and O2 pressure conditions. Fundamental understanding of the growth mechanism of Lu-Fe-O compound films are gained in terms of the thermal chemistry at the surface. Superparamagnetism is observed in a film of LuFe2O4 clusters separated by the hexagonal LuFeO3 phase and structural defects.

Wang, Wenbin [ORNL; Gai, Zheng [ORNL; Chi, Miaofang [ORNL; Fowlkes, Jason Davidson [ORNL; Yi, Jieyu [ORNL; Zhu, Leyi [Argonne National Laboratory (ANL); Cheng, Xuemei [Bryn Mawr College; Keavney, David [Argonne National Laboratory (ANL); Snijders, Paul C [ORNL; Ward, Thomas Z [ORNL; Shen, Jian [ORNL; Xu, Xiaoshan [ORNL

2012-01-01T23:59:59.000Z

297

VISÃES DO ORIENTE EM EÃA DE QUEIRÃS: uma anÃlise comparatista entre os âRelatos de viagemâ e A relÃquia.  

E-Print Network (OSTI)

??Esta dissertaÃÃo tem como objetivo estudar, em perspectiva comparatista, as obras de EÃa de QueirÃs os âRelatos de viagemâ â O Egito, A Palestina e… (more)

Rosana Carvalho da Silva Ghignath

2008-01-01T23:59:59.000Z

298

Eldorado at Santa Fe, New Mexico: Energy Resources | Open Energy  

Open Energy Info (EERE)

Santa Fe, New Mexico: Energy Resources Santa Fe, New Mexico: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 35.526365°, -105.93424° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":35.526365,"lon":-105.93424,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

299

Reactive gas atomization processing for Fe-based ODS alloys  

Science Conference Proceedings (OSTI)

Gas atomization reaction synthesis was employed as a simplified method for processing oxide dispersion forming precursor Fe-based powders (e.g., Fe-Cr-Y-Hf). During this process a reactive atomization gas (i.e., Ar-O{sub 2}) was used to oxidize the powder surfaces during primary break-up and rapid solidification of the molten alloy. This resulted in envelopment of the powders by an ultra-thin (t dispersion strengthened microstructures were engineered from different powder particle size ranges, illustrating microstructural control as a function of particle solidification rate. Additionally, preliminary thermal-mechanical processing was used to develop a fine scale dislocation substructure for ultimate strengthening of the alloy.

Rieken, J.R.; Anderson, I.E.; Kramer, M.J.; Odette, G.R.; Stergarc, E.; Haney, E.

2011-08-08T23:59:59.000Z

300

Fe/V Redox Flow Battery Electrolyte Investigation and Optimization  

Science Conference Proceedings (OSTI)

Recently invented Fe/V redox flow battery (IVBs) system has attracted more and more attentions due to its long-term cycling stability. In this paper, the factors (such as compositions, state of charge (SOC) and temperatures) influencing the stability of electrolytes in both positive and negative half-cells were investigated by an extensive matrix study. Thus an optimized electrolyte, which can be operated in the temperature ranges from -5oC to 50oC without any precipitations, was identified. The Fe/V flow cells using the optimized electrolytes and low-cost membranes exhibited satisfactory cycling performances at different temperatures. The efficiencies, capacities and energy densities of flow batteries with varying temperatures were discussed in detail.

Li, Bin; Li, Liyu; Wang, Wei; Nie, Zimin; Chen, Baowei; Wei, Xiaoliang; Luo, Qingtao; Yang, Zhenguo; Sprenkle, Vincent L.

2013-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "fe ru os" 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
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301

Reaction-based reactive transport modeling of Fe(III)  

Science Conference Proceedings (OSTI)

This research project (started Fall 2004) was funded by a grant to Argonne National Laboratory, The Pennsylvania State University, and The University of Alabama in the Integrative Studies Element of the NABIR Program (DE-FG04-ER63914/63915/63196). Dr. Eric Roden, formerly at The University of Alabama, is now at the University of Wisconsin, Madison. Our project focuses on the development of a mechanistic understanding and quantitative models of coupled Fe(III)/U(VI) reduction in FRC Area 2 sediments. This work builds on our previous studies of microbial Fe(III) and U(VI) reduction, and is directly aligned with the Scheibe et al. NABIR FRC Field Project at Area 2.

Kemner, K.M.; Kelly, S.D.; Burgos, Bill; Roden, Eric

2006-06-01T23:59:59.000Z

302

Santa Fe Springs, California: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Fe Springs, California: Energy Resources Fe Springs, California: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 33.9472359°, -118.0853451° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":33.9472359,"lon":-118.0853451,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

303

Microsoft PowerPoint - Kickoff Meeting DE-FE0002112  

NLE Websites -- All DOE Office Websites (Extended Search)

Project Project DE FE0002112 Project DE-FE0002112 Title: Measurements of 222 Rn, 220 Rn, and CO 2 Emissions in Natural CO 2 Fields in Wyoming: MVA Techniques for in Natural CO 2 Fields in Wyoming: MVA Techniques for Determining Gas Transport and Caprock Integrity University of Wyoming University of Wyoming Presenters: Drs. John Kaszuba and Ken Sims Department of Geology & Geophysics p gy p y February 24-26, 2011 Project Participants Project Participants * Faculty/PIs: John Kaszuba & Ken Sims Faculty/PIs: John Kaszuba & Ken Sims * Graduate Students (MS): Ti M l - Tim Moloney - Allison Pluda * Undergraduate students: - Virginia Marcon - Matt Carberry - Katelynd Faler Introduction * Background - Natural CO 2 analogues coincide with mapped areas of elevated gamma background radioactivity that

304

Melting and casting of FeAl-based cast alloy  

SciTech Connect

The FeAl-based intermetallic alloys are of great interest because of their low density, low raw material cost, and excellent resistance to high-temperature oxidation, sulfidation, carburization, and molten salts. The applications based on these unique properties of FeAl require methods to melt and cast these alloys into complex-shaped castings and centrifugal cast tubes. This paper addresses the melting-related issues and the effect of chemistry on the microstructure and hardness of castings. It is concluded that the use of the Exo-Melt{trademark} process for melting and the proper selection of the aluminum melt stock can result in porosity-free castings. The FeAl alloys can be melted and cast from the virgin and revert stock. A large variation in carbon content of the alloys is possible before the precipitation of graphite flakes occurs. Titanium is a very potent addition to refine the grain size of castings. A range of complex sand castings and two different sizes of centrifugal cast tubes of the alloy have already been cast.

Sikka, V.K. [Oak Ridge National Lab., TN (United States); Wilkening, D. [Columbia Falls Aluminum Co., Columbia Falls, MT (United States); Liebetrau, J.; Mackey, B. [AFFCO, L.L.C., Anaconda, MT (United States)

1998-11-01T23:59:59.000Z

305

Non-collinearity of the magnetic structure of TbFe 10 V 2 J.M. Cadogan  

E-Print Network (OSTI)

for Molecular Sciences, National Research Council, Chalk River Laboratories, Ontario, Canada K0J 1J0 K. Suzuki, the R(Fe; M) 12 compounds pro- vide much useful information on the crystal-#12;eld interac- tions at the R 3+ ion, the R{Fe and Fe{Fe exchange inter- actions and the complex interplay between the crystal

Ryan, Dominic

306

Isolation and microbial reduction of Fe(III) phyllosilicates from subsurface sediments  

Science Conference Proceedings (OSTI)

Fe(III)-bearing phyllosilicates can be important sources of Fe(III) for dissimilatory microbial iron reduction in clay-rich anoxic soils and sediments. The goal of this research was to isolate Fe(III) phyllosilicate phases, and if possible, Fe(III) oxide phases, from a weathered shale saprolite sediment in order to permit experimentation with each phase in isolation. Physical partitioning by density gradient centrifugation did not adequately separate phyllosilicate and Fe(III) oxide phases (primarily nanoparticulate goethite). Hence we examined the ability of chemical extraction methods to remove Fe(III) oxides without significantly altering the properties of the phyllosilicates. XRD analysis showed that extraction with oxalate alone or oxalate in the presence of added Fe(II) altered the structure of Fe-bearing phyllosilicates in the saprolite. In contrast, citrate-bicarbonate-dithionite (CBD) extraction at room temperature and 80C led to minimal alteration of phyllosilicate structures. Reoxidation of CDB-extracted sediment with H2O2 restored phyllosilicate structure (i.e. d-spacing) and redox speciation to conditions similar to that in the pristine sediment. The extent of microbial (Geobacter sulfurreducens) reduction of Fe(III) phyllosilicates isolated by CDB extraction (ca. 16 %) was comparable to what took place in pristine sediments as determined by Mossbauer spectroscopy (ca. 18 % reduction). These results suggest that materials isolated by CDB extraction and H2O2 reoxidation are appropriate targets for detailed studies of natural soil/sediment Fe(III) phyllosilicate reduction.

Wu, Tao; Shelobolina, Evgenya S.; Xu, Huifang; Konishi, Hiromi; Kukkadapu, Ravi K.; Roden, Eric E.

2012-10-12T23:59:59.000Z

307

Thermoelastic properties of ReB[subscript 2] at high pressures and temperatures and comparison with Pt, Os, and Re  

Science Conference Proceedings (OSTI)

We have measured the phase stability and thermoelastic equation of state of ultrahard rhenium diboride at pressures up to 30 GPa and temperatures up to 2500 K using a laser heated diamond anvil cell in conjunction with synchrotron X-ray diffraction. ReB{sub 2} is shown to be stable throughout this pressure and temperature region. The ratio of the c-axis to the a-axis provides a monitor of the annealing of plastic stresses during compression. We show that ReB{sub 2} has a small thermal anisotropy but a large mechanical anisotropy. Combining this new data set with previously existing results from a large volume press yields a thermoelastic equation of state with a Grueneisen parameter of 2.4 (0.08) and a q of 2.7. A comparison of ReB{sub 2} with other high electron density incompressible metals - Os, Re, and Pt - shows that ReB{sub 2} has the lowest thermal pressure and the highest bulk modulus.

Kavner, Abby; Armentrout, Matthew M.; Rainey, Emma S.G.; Xie, Miao; Weaver, Beth E.; Tolbert, Sarah H.; Kaner, Richard B. (UCLA)

2012-01-20T23:59:59.000Z

308

Microsoft Word - FE STRATEGIC HUMAN CAPITAL MGMT PLAN082006-AB.doc  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Strategic Human Capital Management Plan September 2006 OFFICE OF FOSSIL ENERGY GOAL The Office of Fossil Energy (FE) will insure the adequate, efficient, and environmentally sound production, storage, and use of fossil fuels to meet our Nation's energy needs. FE HUMAN RESOURCES VISION FE's human capital vision is to be an employer of choice with a diverse, well-trained, and motivated workforce that will excel. The FE Human Capital Management Plan (HCMP) describes our mission and objectives, vision, human capital strategies and implementing framework, as well as a number of ongoing and new initiatives. We are implementing an integrated human capital system that plans and executes FE-wide human capital activities. INTRODUCTION FE views its human capital resources as its most important asset. Without a highly qualified and

309

Surface Geometric and Electronic Structures of BaFe2As2(001)  

SciTech Connect

BaFe{sub 2}As{sub 2} exhibits properties that are characteristic of the parent compounds of the newly discovered iron (Fe)-based high-T{sub c} superconductors. By combining real-space imaging of scanning tunneling microscopy and spectroscopy (STM+STS) with momentum-space quantitative low-energy electron diffraction (LEED), we have identified the surface plane of cleaved BaFe{sub 2}As{sub 2} crystals as the As terminated Fe-As layer - the plane where superconductivity occurs. LEED and STM+STS data on the BaFe{sub 2}As{sub 2}(001) surface indicate an ordered arsenic (As) terminated metallic surface without reconstruction or lattice distortion. It is surprising that STM images the different Fe-As orbitals associated with the orthorhombic structure, but not the As atoms in the surface plane.

Nascimento, V. B. [University of Tennessee, Knoxville (UTK); Li, Ang [University of Houston, Houston; Jayasundara, Dilushan [University of Houston, Houston; Xuan, Yi [University of Houston, Houston; O'Neal, Jared [University of Houston, Houston; Pan, Shuheng [University of Houston, Houston; Chien, T. Y. [University of Tennessee, Knoxville (UTK); Hu, Biao [University of Tennessee, Knoxville (UTK); He, X. B. [Louisiana State University; Li, Guorong [University of Tennessee, Knoxville (UTK); Sefat, A. S. [Oak Ridge National Laboratory (ORNL); McGuire, Michael A [ORNL; Sales, Brian C [ORNL; Mandrus, David [ORNL; Pan, Minghu [ORNL; Zhang, Jiandi [Louisiana State University; Jin, R. [Louisiana State University; Plummer, E. Ward [Louisiana State University

2009-01-01T23:59:59.000Z

310

Columnar grain growth of FePt(L1{sub 0}) thin films  

SciTech Connect

An experimental approach for obtaining perpendicular FePt-SiOx thin films with a large height to diameter ratio FePt(L1{sub 0}) columnar grains is presented in this work. The microstructure for FePt-SiOx composite thin films as a function of oxide volume fraction, substrate temperature, and film thickness is studied by plan view and cross section TEM. The relations between processing, microstructure, epitaxial texture, and magnetic properties are discussed. By tuning the thickness of the magnetic layer and the volume fraction of oxide in the film at a sputtering temperature of 410 deg. C, a 16 nm thick perpendicular FePt film with {approx}8 nm diameter of FePt grains was obtained. The height to diameter ratio of the FePt grains was as large as 2. Ordering at lower temperature can be achieved by introducing a Ag sacrificial layer.

Yang En; Ho Hoan [Data Storage Systems Center, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213 (United States); Laughlin, David E. [Data Storage Systems Center, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213 (United States); ALCOA Professor of Physical Metallurgy, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213 (United States); Zhu Jiangang [Data Storage Systems Center, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213 (United States); ABB Professor of Engineering, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213 (United States)

2012-04-01T23:59:59.000Z

311

Dielectric relaxations and dielectric response in multiferroic BiFeO{sub 3} ceramics  

SciTech Connect

Single-phase multiferroic BiFeO{sub 3} ceramics were fabricated using pure precipitation-prepared BiFeO{sub 3} powder. Dielectric response of BiFeO{sub 3} ceramics was investigated over a wide range of temperature and frequency. Our results reveal that the BiFeO{sub 3} ceramic sintered at 700 deg. C exhibited high dielectric permittivity, and three dielectric relaxations were observed. A Debye-type dielectric relaxation at low temperatures (-50 to 20 deg. C) is attributed to the carrier hopping process between Fe{sup 2+} and Fe{sup 3+}. The other two dielectric relaxations at the temperature ranges 30-130 deg. C and 140-200 deg. C could be due to the grain boundary effect and the defect ordering and/or the conductivity, respectively.

Hunpratub, Sitchai; Thongbai, Prasit; Maensiri, Santi [Department of Physics, Khon Kaen University, Khon Kaen 40002 (Thailand); Yamwong, Teerapon [National Metals and Materials Technology Center (MTEC), Thailand Science Park, Pathumthani 12120 (Thailand); Yimnirun, Rattikorn [Department of Physics, Faculty of Science, Chiang Mai University, Chiang Mai 50200 (Thailand)

2009-02-09T23:59:59.000Z

312

Large scale shell model calculations for even-even $^{62-66}$Fe isotopes  

E-Print Network (OSTI)

The recently measured experimental data of Legnaro National Laboratories on neutron rich even isotopes of $^{62-66}$Fe with A=62,64,66 have been interpreted in the framework of large scale shell model. Calculations have been performed with a newly derived effective interaction GXPF1A in full $\\it{fp}$ space without truncation. The experimental data is very well explained for $^{62}$Fe, satisfactorily reproduced for $^{64}$Fe and poorly fitted for $^{66}$Fe. The increasing collectivity reflected in experimental data when approaching N=40 is not reproduced in calculated values. This indicates that whereas the considered valence space is adequate for $^{62}$Fe, inclusion of higher orbits from $\\it{sdg}$ shell is required for describing $^{66}$Fe.

P. C. Srivastava; I. Mehrotra

2009-07-23T23:59:59.000Z

313

Inert anode containing oxides of nickel, iron and zinc useful for the electrolytic production of metals  

DOE Patents (OSTI)

An inert anode for the electrolytic production of metals such as aluminum is disclosed. The inert anode includes a ceramic oxide material preferably made from NiO, Fe.sub.2 O.sub.3 and ZnO. The inert anode composition may comprise the following mole fractions of NiO, Fe.sub.2 O.sub.3 and ZnO: 0.2 to 0.99 NiO; 0.0001 to 0.8 Fe.sub.2 O.sub.3 ; and 0.0001 to 0.3 ZnO. The inert anode may optionally include other oxides and/or at least one metal phase, such as Cu, Ag, Pd, Pt, Au, Rh, Ru, Ir and/or Os. The Ni--Fe--Co--O ceramic material exhibits very low solubility in Hall cell baths used to produce aluminum.

Ray, Siba P. (Murrysville, PA); Weirauch, Jr., Douglas A. (Murrysville, PA); Liu, Xinghua (Monroeville, PA)

2002-01-01T23:59:59.000Z

314

Inert anode containing oxides of nickel iron and cobalt useful for the electrolytic production of metals  

DOE Patents (OSTI)

An inert anode for the electrolytic production of metals such as aluminum is disclosed. The inert anode includes a ceramic oxide material preferably made from NiO, Fe.sub.2 O.sub.3 and CoO. The inert anode composition may comprise the following mole fractions of NiO, Fe.sub.2 O.sub.3 and CoO: 0.15 to 0.99 NiO; 0.0001 to 0.85 Fe.sub.2 O.sub.3 ; and 0.0001 to 0.45 CoO. The inert anode may optionally include other oxides and/or at least one metal phase, such as Cu, Ag, Pd, Pt, Au, Rh, Ru, Ir and/or Os. The Ni--Fe--Co--O ceramic material exhibits very low solubility in Hall cell baths used to produce aluminum.

Ray, Siba P. (Murrysville, PA); Liu, Xinghua (Monroeville, PA); Weirauch, Jr., Douglas A. (Murrysville, PA)

2002-01-01T23:59:59.000Z

315

Study of intergranular embrittlement in Fe-12Mn alloys  

Science Conference Proceedings (OSTI)

A high resolution scanning Auger microscopic study has been performed on the intergranular fracture surfaces of Fe-12Mn steels in the as-austenitized condition. Fracture mode below the ductile-brittle transition temperature was intergranular whenever the alloy was quenched from the austenite field. The intergranular fracture surface failed to reveal any consistent segregation of P, S, As, O, or N. The occasional appearance of S or O on the fracture surface was found to be due to a low density precipitation of MnS and MnO/sub 2/ along the prior austenite boundaries. An AES study with Ar/sup +/ ion-sputtering showed no evidence of manganese enrichment along the prior austenite boundaries, but a slight segregation of carbon which does not appear to be implicated in the tendency toward intergranular fracture. Addition of 0.002% B with a 1000/sup 0/C/1h/WQ treatment yielded a high Charpy impact energy at liquid nitrogen temperature, preventing the intergranular fracture. High resolution AES studies showed that 3 at. % B on the prior austenite grain boundaries is most effective in increasing the grain boundary cohesive strength in an Fe-12Mn alloy. Trace additions of Mg, Zr, or V had negligible effects on the intergranular embrittlement. A 450/sup 0/C temper of the boron-modified alloys was found to cause tempered martensite embrittlement, leading to intergranular fracture. The embrittling treatment of the Fe-12Mn alloys with and without boron additions raised the ductile-brittle transition by 150/sup 0/C. This tempered martensite embrittlement was found to be due to the Mn enrichment of the fracture surface to 32 at. % Mn in the boron-modified alloy and 38 at. % Mn in the unmodified alloy. The Mn-enriched region along the prior austenite grain boundaries upon further tempering is believed to cause nucleation of austenite and to change the chemistry of the intergranular fracture surfaces. 61 figures.

Lee, H.J.

1982-06-01T23:59:59.000Z

316

Site-specific electronic configurations of Fe 3d states by energy loss by channeled electrons  

SciTech Connect

Site-specific configurations of Fe 3d electrons in a spinel ferrite were investigated by electron energy loss spectroscopy under electron channeling conditions. Site-specific spectra were extracted by applying a multivariate curve resolution (MCR) technique to the data set. An electronic difference in the Fe sites caused by ligand field splitting of trivalent Fe was probed. This demonstrated the promise of site-specific valence and spin state analysis in spintronics applications of spinel ferrites.

Tatsumi, Kazuyoshi; Muto, Shunsuke; Nishida, Ikuo [Department of Materials, Physics, and Energy Engineering, Nagoya University, Chikusa, Nagoya 464-8603 (Japan); Rusz, Jan [Department of Physics and Astronomy, Uppsala University, Box 516, SE-75120 Uppsala (Sweden)

2010-05-17T23:59:59.000Z

317

Structure and magnetic properties of the cubic oxide fluoride BaFeO{sub 2}F  

SciTech Connect

Fluorination of the parent oxide, BaFeO{sub 3-{delta}}, with polyvinylidine fluoride gives rise to a cubic compound with a=4.0603(4) A at 298 K. {sup 57}Fe Moessbauer spectra confirmed that all the iron is present as Fe{sup 3+}. Neutron diffraction data showed complete occupancy of the anion sites, indicating a composition BaFeO{sub 2}F, with a large displacement of the iron off-site. The magnetic ordering temperature was determined as T{sub N}=645{+-}5 K. Neutron diffraction data at 4.2 K established G-type antiferromagnetism with a magnetic moment per Fe{sup 3+} ion of 3.95 {mu}{sub B}. However, magnetisation measurements indicated the presence of a weak ferromagnetic moment that is assigned to the canting of the antiferromagnetic structure. {sup 57}Fe Moessbauer spectra in the temperature range 10-300 K were fitted with a model of fluoride ion distribution that retains charge neutrality of the perovskite unit cell. - Graphical abstract: The cubic oxide fluoride of composition BaFeO{sub 2}F has been synthesised and characterised. Highlights: > Fluorination of BaFeO{sub 3-{delta}} with polyvinylidene fluoride gives a cubic oxide fluoride of composition BaFeO{sub 2}F. > BaFeO{sub 2}F adopts a canted antiferromagnetic structure and is different from the related phase of composition SrFeO{sub 2}F. > A model of fluoride ion distribution about iron in BaFeO{sub 2}F has been explored.

Berry, Frank J., E-mail: f.j.berry.1@bham.ac.uk [School of Chemistry, University of Birmingham, Edgbaston, Birmingham B15 2TT (United Kingdom) and Department of Chemistry, Open University, Walton Hall, Milton Keynes MK7 6AA (United Kingdom); Coomer, Fiona C.; Hancock, Cathryn [School of Chemistry, University of Birmingham, Edgbaston, Birmingham B15 2TT (United Kingdom); Helgason, Orn [Science Institute, University of Iceland, Dunhagi 3, IS-107 Reykjavik (Iceland); Moore, Elaine A. [Department of Chemistry, Open University, Walton Hall, Milton Keynes MK7 6AA (United Kingdom); Slater, Peter R.; Wright, Adrian J. [School of Chemistry, University of Birmingham, Edgbaston, Birmingham B15 2TT (United Kingdom); Thomas, Michael F. [Department of Physics, The University of Liverpool, Liverpool L69 3BX (United Kingdom)

2011-06-15T23:59:59.000Z

318

Li/FeS battery design for an electric van  

DOE Green Energy (OSTI)

Li-alloy/FeS battery designs, based upon a well-characterized 300-Ah cell developed by Westinghouse Oceanic Division have been developed for four electric vans currently under development by the US Department of Energy and the Electric Power Research Institute. Computerized cell models were developed to calculate power, energy, weight, and volume values for a cell while varying key design parameters. Battery specifications and vehicle performance are given for the Chrysler TE Van, GMC G-Van, Ford ETX-II, and the Eaton DSEP. 2 refs., 1 fig., 2 tabs.

Chilenskas, A.A.; Barlow, G.

1989-01-01T23:59:59.000Z

319

Improved oxidation sulfidation resistance of Fe-Cr-Ni alloys  

DOE Patents (OSTI)

High temperature resistance of Fe-Cr-Ni alloy compositions to oxidative and/or sulfidative conditions is provided by the incorporation of about 1 to 8 wt % of Zr or Nb and results in a two-phase composition having an alloy matrix as the first phase and a fine grained intermetallic composition as the second phase. The presence and location of the intermetallic composition between grains of the matrix provides mechanical strength, enhanced surface scale adhesion, and resistance to corrosive attack between grains of the alloy matrix at temperatures of 500 to 1000/sup 0/C.

Natesan, K.; Baxter, D.J.

1983-07-26T23:59:59.000Z

320

Measurement of the transport spin polarization of FeV using point-contact Andreev reflection  

SciTech Connect

The Fe1 xVx alloy system exhibits the lowest known Gilbert relaxation rate of any ferromagnetic metal or binary alloy with G1 435MHz at x1 427% V. Low relaxation rates are of particular interest in modern spin electronic applications involving spin torque. The transport spin polarization of a series of sputtered epitaxial Fe1 xVx samples was measured using point contact Andreev reflection. Values of the transport spin polarization agree well with those measured for pure Fe and are independent of composition. The results indicate that the substitution of up to 50% of V for Fe does not reduce the spin polarization in the alloy.

Bailey, William [Columbia University; Osofsky, Mike [Naval Research Laboratory, Washington, D.C.; Bussman, Konrad [Naval Research Laboratory, Washington, D.C.; Parker, David S [ORNL; Cheng, L [Columbia University

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "fe ru os" 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

Improvement of SOFC Electrodes through Catalyst Infiltration & Control of Cr Volatilization from FeCr Components  

DOE Green Energy (OSTI)

This presentation discusses the improvement of SOFC electrodes through catalyst infiltration and control of Cr volatilization from FeCr components.

Visco, S.J.; Jacobson, C.; Kurokawa, H.; Sholklapper, T.; Lu, C.; De Jonghe, L.

2005-01-28T23:59:59.000Z

322

Recovery and Refunctionalization of LiFePO4 Cathode from End-of ...  

Science Conference Proceedings (OSTI)

Symposium, Battery Recycling. Presentation Title, Recovery and Refunctionalization of LiFePO4 Cathode from End-of-Life Commercial Lithium Ion Batteries.

323

Coercivity Enhancement of NdFeB Sintered Magnet by Grain ...  

Science Conference Proceedings (OSTI)

... Institute for Rare metals (KIRAM) funded by Korea Institute of Industrial Technology(KITECH, Korea) ... Fe and Mn Based Materials for Magnetic Refrigeration.

324

Microsoft Word - DE-FE0010160 Q1 report.doc  

NLE Websites -- All DOE Office Websites (Extended Search)

Oil & Natural Gas Technology DOE Award No.: DE-FE0010160 Quarterly Research Performance Progress Report (Period ending 12312012) Advanced Hydrate Reservoir Modeling Using Rock...

325

Ce-Doped BiFeO3 Nanoparticles: Sol-Gel Synthesis and ...  

Science Conference Proceedings (OSTI)

... Epitaxial BiFeO3 Thin Films · Magnetoelastic/Piezoelectric Laminated Structures for Tunable Remote Contact-Less Magnetic Sensing and Energy Harvesting.

326

Disorder effects in half-metallic Sr 2 FeMoO 6 single crystals  

Science Conference Proceedings (OSTI)

Double perovskites such as Sr 2 FeMoO 6 (SFMO) have been predicted to be half-metallic (100% spin polarized). However

Raghava P. Panguluri; Sheng Xu; Yutaka Moritomo; I. V. Solovyev; B. Nadgorny

2009-01-01T23:59:59.000Z

327

He Ion Irradiation Damage in Fe/W Nanolayer Films - TMS  

Science Conference Proceedings (OSTI)

He Ion Irradiation Damage in Fe/VV N anolayer Films. Nan Li, X. Zhang. Department of Mechanical Engineering, Texas A&M University, College Station, ...

328

SF 6432-FE (02-01-13) Fixed Price Outside US  

NLE Websites -- All DOE Office Websites (Extended Search)

CORPORATION SF 6432-FE (072013) SECTION II STANDARD TERMS AND CONDITIONS FOR FIXED PRICE CONTRACTS OUTSIDE OF THE UNITED STATES OF AMERICA THE FOLLOWING CLAUSES APPLY TO...

329

Thermal and irradiation-induced phase separation in Fe-Ni based ...  

Science Conference Proceedings (OSTI)

magnetic, low-expansion Invar-type alloys and model austenitic Fe-Ni based alloys studied for ...... fast reactors such as the Fast Flux Test Facility (FFTF).

330

CORROSION OF Fe-10Al-Cr ALLOYS BY COAL CHAR  

E-Print Network (OSTI)

off-gas from a typical gasifier contains large percentagesIOAl-Cr alloys at coal-gasifier This FeS and CaS0 operating

Gordon, B.A.

2011-01-01T23:59:59.000Z

331

Formation of 1:13 Phase in La(Fe,Si)  

Science Conference Proceedings (OSTI)

Alloy Design and Powder Processing of Mn-Al Based Materials for Rare Earth ... Enhancement of the Refrigerant Capacity in Partially Crystallized Gd-Fe-Al-B ...

332

High Anisotropy and High Electrical Resistivity Nd-Fe-B/CaF2 ...  

Science Conference Proceedings (OSTI)

Alloy Design and Powder Processing of Mn-Al Based Materials for Rare Earth ... Enhancement of the Refrigerant Capacity in Partially Crystallized Gd-Fe-Al-B ...

333

Thermal Stability of HDDR-treated Nd-Fe-B-type Magnetic Powder  

Science Conference Proceedings (OSTI)

Alloy Design and Powder Processing of Mn-Al Based Materials for Rare Earth ... Enhancement of the Refrigerant Capacity in Partially Crystallized Gd-Fe-Al-B ...

334

H2: Coercivity and Grain Boundary Microstructure in Sintered Nd-Fe ...  

Science Conference Proceedings (OSTI)

Alloy Design and Powder Processing of Mn-Al Based Materials for Rare Earth ... Enhancement of the Refrigerant Capacity in Partially Crystallized Gd-Fe-Al-B ...

335

Microstructure, Magnetic and Electrical Resistance of NdFeB/NdF3 ...  

Science Conference Proceedings (OSTI)

Alloy Design and Powder Processing of Mn-Al Based Materials for Rare Earth ... Enhancement of the Refrigerant Capacity in Partially Crystallized Gd-Fe-Al-B ...

336

H20: Synthesis of Fe100-xNx Powders by Mechanical Alloying and ...  

Science Conference Proceedings (OSTI)

Alloy Design and Powder Processing of Mn-Al Based Materials for Rare Earth ... Enhancement of the Refrigerant Capacity in Partially Crystallized Gd-Fe-Al-B ...

337

Bulk La(Fe,Si) 13 -based Materials Prepared by SPS Process ...  

Science Conference Proceedings (OSTI)

Giant Low-Field Magnetocaloric Effect with Small Hysteresis Near Room ... Large Room Temperature Magnetoresistance in FeCo-SiN Granular Films · Magnetic ...

338

D21 Synthesis of Fe Stainless Steel Alloy NanopowderS by ...  

Science Conference Proceedings (OSTI)

D14 Gold Nanoparticles in Red Ruby Glasses Used for Decoration in Thailand · D15 Soft Magnetic Properties of Nanocrystalline Fe-based P/M Cores Mixed ...

339

C48 TiFe Alloy Prepared by Molten Salt Electrolysis Ilmenite  

Science Conference Proceedings (OSTI)

D14 Gold Nanoparticles in Red Ruby Glasses Used for Decoration in Thailand · D15 Soft Magnetic Properties of Nanocrystalline Fe-based P/M Cores Mixed ...

340

Fe and Al Abundances for 180 Red Giants in the Globular Cluster Omega Centauri (NGC 5139)  

E-Print Network (OSTI)

We present radial velocities, Fe, and Al abundances for 180 red giant branch (RGB) stars in the Galactic globular cluster Omega Centauri ($\\omega$ Cen). The majority of our data lie in the range 11.0$Al/Fe] ratios exhibit large star--to--star scatter for all populations, with the more than 1.0 dex range of [Al/Fe] decreasing for stars more metal--rich than [Fe/H]$\\sim$--1.4. The minimum [Al/Fe] abundance observed for all metallicity populations is [Al/Fe]$\\sim$+0.15. The maximum abundance of log $\\epsilon$(Al) is reached for stars with [Fe/H]$\\sim$--1.4 and does not increase further with stellar metallicity. We interpret these results as evidence for type II SNe providing the minimum [Al/Fe] ratio and a mass spectrum of intermediate mass asymptotic giant branch stars causing the majority of the [Al/Fe] scatter. These results seem to fit in the adopted scheme that star formation occurred in $\\omega$ Cen over $>$1 Gyr.

Christian I. Johnson; Catherine A. Pilachowski; Jennifer Simmerer; Dustin Schwenk

2008-04-16T23:59:59.000Z

Note: This page contains sample records for the topic "fe ru os" 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

Toward the Development of Dy-free High Coercivity Nd-Fe-B ...  

Science Conference Proceedings (OSTI)

... Nd-Fe-B Permanent Magnets · Unique Exchange Bias Induced by Antiferromagnetic Cr-oxide · ZnO-graphene Hybrid Quantum Dots Light Emitting Diode ...

342

Development of Heusler-type Fe 2 VAl alloys for thermoelectric ...  

Science Conference Proceedings (OSTI)

Abstract Scope, A Heusler alloy, Fe2VAl, is a promising candidate for thermoelectric power generation because of its high thermoelectric power ...

343

Phonon densities of states of face-centered-cubic Ni-Fe alloys  

Science Conference Proceedings (OSTI)

Inelastic neutron scattering and nuclear resonant inelastic x-ray scattering were used to determine the phonon densities of states of face-centered-cubic Ni-Fe alloys. Increasing Fe concentration results in an average softening of the phonon modes. Chemical ordering of the Ni0.72Fe0.28 alloy results in a reduction of the partial vibrational entropy of the Fe atoms but does not significantly change the partial vibrational entropy of the Ni atoms. Changes in the phonon densities of states with composition and chemical ordering are discussed and analyzed with a cluster expansion method.

Lucas, Matthew [United States Air Force Research Laboratory, Wright-Patterson Air Force Base] [United States Air Force Research Laboratory, Wright-Patterson Air Force Base; Mauger, L [California Institute of Technology, W. M. Keck Laboratory, Pasadena] [California Institute of Technology, W. M. Keck Laboratory, Pasadena; Munoz, Jorge A. [California Institute of Technology, Pasadena] [California Institute of Technology, Pasadena; Halevy, I [California Institute of Technology, Pasadena] [California Institute of Technology, Pasadena; Horwath, J [United States Air Force Research Laboratory, Wright-Patterson Air Force Base] [United States Air Force Research Laboratory, Wright-Patterson Air Force Base; Semiatin, S L [United States Air Force Research Laboratory, Wright-Patterson Air Force Base] [United States Air Force Research Laboratory, Wright-Patterson Air Force Base; Leontsev, S. O. [University of Kentucky, Lexington] [University of Kentucky, Lexington; Stone, Matthew B [ORNL] [ORNL; Abernathy, Douglas L [ORNL] [ORNL; Xiao, Yuming [Carnegie Institution of Washington] [Carnegie Institution of Washington; Chow, P [HPCAT Geophysical Lab, Argonne, IL] [HPCAT Geophysical Lab, Argonne, IL; Fultz, B. [California Institute of Technology, Pasadena] [California Institute of Technology, Pasadena

2013-01-01T23:59:59.000Z

344

Atomic structure and magnetic properties of Fe1-xCox alloys  

SciTech Connect

Using genetic algorithm with first-principle calculations, we searched for low-energy crystal structures of Fe1?xCox alloys. We found that Fe1?xCox alloys are highly configurationally degenerate with many additional off-stoichiometric stable structures to the well-known B2 structure. The average magnetic moment of Fe atom increases with concentration of Co in the alloy, while that of Co atom is almost constant, which are consistent with experiments and earlier studies. The magnetic moment of Fe atom is strongly dependent on the number of Co nearest neighbor and it increases with this number.

Nguyen, Manh Cuong; Zhao, Xin; Ji, Min; Wang, Cai-Zhuang; Harmon, Bruce; Ho, Kai-Ming

2012-03-09T23:59:59.000Z

345

Can Vanadium Be Substituted into LiFePO4  

DOE Green Energy (OSTI)

Vanadium is shown to substitute for iron in the olivine LiFePO{sub 4} up to at least 10 mol %, when the synthesis is carried out at 550 C. In the solid solution LiFe{sub 1-3y/2}V{sub y}PO{sub 4}, the a and b lattice parameters and cell volume decrease with increasing vanadium content, while the c lattice parameter increases slightly. However, when the synthesis is performed at 650 C, a NASICON phase, Li{sub 3}V{sub 2}(PO{sub 4}){sub 3}, is also formed, showing that solid solution is a function of the synthesis temperature. X-ray absorption near-edge structure indicates vanadium is in the 3+ oxidation state and in an octahedral environment. Magnetic studies reveal a shift of the antiferromagnetic ordering transition toward lower temperatures with increasing vanadium substitution, confirming solid solution formation. The addition of vanadium enhances the electrochemical performance of the materials especially at high current densities.

Omenya F.; Nam K.; Chernova N.A.; Upreti S.; Zavalij P.Y.; Nam K.-W.; Yang X.-Q.; Whittingham M.S.

2011-11-08T23:59:59.000Z

346

Reactive gas atomization processing for Fe-based ODS alloys  

SciTech Connect

Gas atomization reaction synthesis was employed as a simplified method for processing oxide dispersion forming precursor Fe-based powders (e.g., Fe–Cr–Y–Hf). During this process a reactive atomization gas (i.e., Ar–O2) was used to oxidize the powder surfaces during primary break-up and rapid solidification of the molten alloy. This resulted in envelopment of the powders by an ultra-thin (t < 50 nm) metastable Cr-enriched oxide shell that was used as a vehicle to transport oxygen into the consolidated microstructure. Subsequent elevated temperature heat treatment promoted thermodynamically driven oxygen exchange reactions between trapped films of Cr-enriched oxide and internal (Y, Hf)-enriched intermetallic precipitates, resulting in highly stable nano-metric mixed oxide dispersoids (i.e., Y–Hf–O) that were identified with X-ray diffraction. Transmission electron microscopy and atom probe tomography results also revealed that the size and distribution of the dispersoids were found to depend strongly on the original rapidly solidified microstructure. To exploit this, several oxide dispersion strengthened microstructures were engineered from different powder particle size ranges, illustrating microstructural control as a function of particle solidification rate. Additionally, preliminary thermal–mechanical processing was used to develop a fine scale dislocation substructure for ultimate strengthening of the alloy.

Rieken, Joel R [Ames Laboratory; Anderson, Iver E [Ames Laboratory; Kramer, Matthew J [Ames Laboratory; Odette, G R [University of California; Stergar, E [University of California; Haney, E [University of California

2011-08-24T23:59:59.000Z

347

Thermodynamic Modeling and Experimental Study of the Fe-Cr-Zr System  

Science Conference Proceedings (OSTI)

Wide applications of zircaloys, stainless steels and their interactions in nuclear reactors require the knowledge on phase stability and thermodynamic property of the Fe-Cr-Zr system. This knowledge is also important to develop new Zr-contained Fe-Cr ferritic steels. This work aims at developing thermodynamic models for describing phase stability and thermodynamic property of the Fe-Cr-Zr system using the Calphad approach coupled with experimental study. Thermodynamic descriptions of the Fe-Cr and Cr-Zr systems were either directly adopted or slightly modified from literature. The Fe-Zr system has been remodeled to accommodate recent ab-initio calculation of formation enthalpies of various Fe-Zr compounds. Reliable ternary experimental data and thermodynamic models were mainly available in the Zr-rich region. Therefore, selected ternary alloys located in the vicinity of the eutectic valley of (Fe,Cr,Zr) and (Fe,Cr)2Zr laves phase in the Fe-rich region have been experimentally investigated in this study. Microstructure has been examined by using scanning electron microscope, energy-dispersive Xray spectroscopy and X-ray diffraction. These experimental results, along with the literature data were then used to develop thermodynamic models for phases in the Fe-Cr-Zr system. Calculated phase equilibria and thermodynamic properties of the ternary system yield satisfactory agreements with available experimental data, which gives the confidence to use these models as building blocks for developing a Zr, Fe and Cr contained multicomponent thermodynamic database for broader applications in nuclear reactors.

Yang, Ying [ORNL; Tan, Lizhen [ORNL; Bei, Hongbin [ORNL; Busby, Jeremy T [ORNL

2013-01-01T23:59:59.000Z

348

A nuclear magnetic resonance probe of Fe-Al and Al20V2Eu intermetallics  

E-Print Network (OSTI)

Al-rich Fe-Al systems (FeAl2, Fe2 Al5 and Fe4Al13) and Al20V2Eu have complicated structures with quasicrystal-like features making these materials potentially of interest for magnetic behavior. However, there is not much work on these materials. To study the variety of magnetic properties, we use NMR, magnetic susceptibility, specific heat and other methods in this work. The microscopic electronic and magnetic properties of the Al-rich Fe-Al system and Al20V2Eu have been studied via 27Al NMR at temperatures between 4 and 500 K. The results of spin lattice relaxation rates reveal a pseudogap in Fe4Al13 and Fe2Al5 around the Fermi-level in the density of states. Besides, a square well gap with a width of 2 meV and center at Fermi energy was detected by specific heat measurements in Fe2Al5. Both Fe4 Al13 and Fe2Al5 are non-magnetic systems with dilute magnetic defects, while FeAl2 is a concentrated local magnetic moment system. In Al20V2Eu, a crossover was observed in NMR, magnetization and transport measurements. Above 40 K, Eu(2+) local magnetic moments dominate; below 40 K, a transition to a Kondo regime is observed, where the Kondo effect leads to the reduction of localized moments due to the formation of a spin-compensated Kondo cloud. With increasing magnetic field, f electrons participate more and more in excitations near the Fermi level and a heavy-Fermion state was observed through specific heat measurements at high magnetic field.

Chi, Ji

2007-08-01T23:59:59.000Z

349

Is there a future for semiconducting silicides? (invited)  

Science Conference Proceedings (OSTI)

Keywords: &bgr;FeSi2, Ru2Si3, electroluminescence, ion beam synthesis, semiconducting silicides, silicon-based light-emitting diode

Karen J. Reeson; Jane Sharpe; Milton Harry; Daniel Leong; Colin McKinty; Adrian Kewell; Manon Lourenço; Yan Ling Chen; G. Shao; Kevin P. Homewood

2000-01-01T23:59:59.000Z

350

Epitaxial growth of MgO and Fe/MgO/Fe magnetic tunnel junctions on (100)-Si by molecular beam epitaxy  

SciTech Connect

Epitaxial growth of MgO barrier on Si is of technological importance due to the symmetry filtering effect of the MgO barrier in conjunction with bcc-ferromagnets. We study the epitaxial growth of MgO on (100)-Si by molecular beam epitaxy. MgO matches Si with 4:3 cell ratio, which renders Fe to be 45 deg. rotated relative to Si, in sharp contrast to the direct epitaxial growth of Fe on Si. The compressive strains from Si lead to the formation of small angle grain boundaries in MgO below 5 nm, and also affect the transport characteristics of Fe/MgO/Fe magnetic tunnel junctions formed on top.

Miao, G. X.; Veenhuizen, M. J. van; Moodera, J. S. [Francis Bitter Magnet Laboratory, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States); Chang, J. Y. [Francis Bitter Magnet Laboratory, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States); Center for Spintronics Research, Korea Institute of Science and Technology, Seoul 136-791 (Korea, Republic of); Thiel, K.; Seibt, M.; Eilers, G.; Muenzenberg, M. [IV.Physikalisches Institut, Universitaet Goettingen, Goettingen 37073 (Germany)

2008-10-06T23:59:59.000Z

351

Effects of boron composition on tunneling magnetoresistance ratio and microstructure of CoFeB/MgO/CoFeB pseudo-spin-valve magnetic tunnel junctions  

SciTech Connect

The effect of B concentration on the tunneling magnetoresistance (TMR) of (Co{sub 25}Fe{sub 75}){sub 100-x}B{sub x}/MgO/(Co{sub 25}Fe{sub 75}){sub 100-x}B{sub x} (x = 22 and 33) pseudo-spin-valve (P-SV) magnetic tunnel junctions (MTJs) was investigated. The TMR ratios for optimally annealed MTJs with x = 22 and 33 were 340% and 170%, respectively, at room temperature. High resolution transmission electron microscopy (HRTEM) observation showed a weaker (001) texture in the MgO barrier in the MTJ with x = 33. The bottom electrode was not fully crystallized even with a considerable amount of B in the (Co{sub 25}Fe{sub 75}){sub 67}B{sub 33}, while good epitaxy was observed between (001) textured MgO and (Co{sub 25}Fe{sub 75}){sub 78}B{sub 22} electrodes.

Kodzuka, M. [Graduate School of Pure and Applied Sciences, University of Tsukuba, Tsukuba 305-0047 (Japan); Ohkubo, T. [National Institute for Materials Science, Tsukuba 305-0047 (Japan); Hono, K. [Graduate School of Pure and Applied Sciences, University of Tsukuba, Tsukuba 305-0047 (Japan); National Institute for Materials Science, Tsukuba 305-0047 (Japan); Ikeda, S.; Ohno, H. [Center for Spintronics Integrated Systems, Tohoku University, Sendai 980-8577 (Japan); Laboratory for Nanoelectronics and Spintronics, Research Institute of Electrical Communication, Tohoku University, Sendai 980-8577 (Japan); Gan, H. D. [Center for Spintronics Integrated Systems, Tohoku University, Sendai 980-8577 (Japan)

2012-02-15T23:59:59.000Z

352

Data:B6995793-7bbe-4717-8b8a-7fe99c1fe735 | Open Energy Information  

Open Energy Info (EERE)

3-7bbe-4717-8b8a-7fe99c1fe735 3-7bbe-4717-8b8a-7fe99c1fe735 No revision has been approved for this page. It is currently under review by our subject matter experts. Jump to: navigation, search Loading... 1. Basic Information 2. Demand 3. Energy << Previous 1 2 3 Next >> Basic Information Utility name: Arrowhead Electric Coop, Inc Effective date: 2012/07/17 End date if known: Rate name: Interruptable Heat/Water Sector: Description: This rate is applicable for customers who have General Service. Usage under this rate would be tracked by a 2nd meter. Source or reference: Illinois State University Archives Source Parent: Comments Applicability Demand (kW) Minimum (kW): Maximum (kW): History (months): Energy (kWh) Minimum (kWh): Maximum (kWh): History (months): Service Voltage Minimum (V): Maximum (V):

353

Thermodynamics of the Magnetite-Ulvöspinel (Fe3O4-Fe2TiO4) Solid Solution  

Science Conference Proceedings (OSTI)

The thermodynamics of mixing and its dependence on cation distribution in the Fe3O4– 14 Fe2TiO4 (magnetite-ulvöspinel) spinel solid solution were studied using high temperature oxide melt solution calorimetry and a range of structural and spectroscopic probes. The enthalpies of formation of ilmenite and ulvöspinel from the oxides and from the elements were obtained using oxidative drop solution calorimetry at 973 K in molten sodium molybdate. The enthalpy of mixing, determined from the fit to the measured enthalpies of drop solution calorimetry, is endothermic and represented by a quadratic formalism, ?Hmix = (22.60 ± 8.46)x(1–x) kJ/mol, where x is the mole fraction of ulvöspinel. The entropies of mixing are more complex than those for a regular solution and have been calculated based on average measured and theoretical cation distributions. Calculated free energies of mixing show evidence for a solvus at low temperature in good agreement with that observed experimentally.

Lilova, Kristina I.; Pearce, Carolyn I.; Gorski, Christopher A.; Rosso, Kevin M.; Navrotsky, Alexandra

2012-09-17T23:59:59.000Z

354

Assembly and Evolution of Complex Fe-S Clusters as Revealed by X-ray  

NLE Websites -- All DOE Office Websites (Extended Search)

Assembly and Evolution of Complex Fe-S Clusters Assembly and Evolution of Complex Fe-S Clusters as Revealed by X-ray Crystallography Complex Fe-S cluster-containing enzymes are ubiquitous in nature where they are involved in a number of fundamental reactions for life including carbon dioxide fixation, nitrogen fixation, and hydrogen metabolism. One of the more complex and unusual biological clusters is found in the [FeFe]-hydrogenase. The active-site H-cluster in these enzymes has a [4Fe-4S] subcluster bridged via a cysteine thiolate to a 2Fe subcluster, which in turn is coordinated by CO and CN- ligands and a bridging dithiolate ligand (1). The biologically unique CO and CN- ligands finely tune the 2Fe subcluster of the H-cluster making it able to efficiently catalyze the activation of molecular H2 through the reversible reaction H2 2H+ + 2e-. How this complex metallocluster is assembled in nature is intriguing and the precise mechanism by which various enzymes, scaffolds, and carriers carry out H-cluster maturation is unknown.

355

Substructuring FE-XFE approaches applied to three-dimensional crack propagation  

Science Conference Proceedings (OSTI)

Two substructuring methods are investigated in order to allow for the use of the eXtended Finite Element Method (X-FEM) within commercial finite element (FE) codes without need for modifying their kernel. The global FE problem is decomposed into two ... Keywords: FETI, Fracture mechanics, Substructuring methods, X-FEM

E. Wyart; M. Duflot; D. Coulon; P. Martiny; T. Pardoen; J. -F. Remacle; F. Lani

2008-06-01T23:59:59.000Z

356

Towards a scalable fully-implicit fully-coupled resistive MHD formulation with stabilized FE methods  

Science Conference Proceedings (OSTI)

This paper explores the development of a scalable, nonlinear, fully-implicit stabilized unstructured finite element (FE) capability for 2D incompressible (reduced) resistive MHD. The discussion considers the implementation of a stabilized FE formulation ... Keywords: Direct-to-steady-state, Fully-implicit, Large-scale parallel, Multilevel preconditioner, Newton-Krylov, Resistive MHD, Stabilized finite element

J. N. Shadid; R. P. Pawlowski; J. W. Banks; L. Chacón; P. T. Lin; R. S. Tuminaro

2010-10-01T23:59:59.000Z

357

Calibration of a FE model of masonry shear panels strengthened by metal sheathing  

Science Conference Proceedings (OSTI)

In order to calibrate advanced FE Model experimental tests on masonry wall panel specimens in shear as well as on some panels strengthened by ductile steel are used. Application of finite element material models to simulate the behavior of masonry is ... Keywords: FE model, innovative retrofitting techniques, masonry shear panels, material models

A. Dogariu; F. Campitiello

2010-04-01T23:59:59.000Z

358

Neural network based controller for Cr6+-Fe2+ batch reduction process  

Science Conference Proceedings (OSTI)

An automated pilot plant has been designed and commissioned to carry out online/real-time data acquisition and control for the Cr^6^+-Fe^2^+ reduction process. Simulated data from the Cr^6^+-Fe^2^+ model derived are validated with online data and laboratory ... Keywords: Batch system, Neural Networks, ORP, Redox process

Chew Chun Ming; M. A. Hussain; M. K. Aroua

2011-11-01T23:59:59.000Z

359

Large pyramid shaped single crystals of BiFeO{sub 3} by solvothermal synthesis method  

SciTech Connect

Synthesis parameters are optimized in order to grow single crystals of multiferroic BiFeO{sub 3}. 2 to 3 mm size pyramid (tetrahedron) shaped single crystals were successfully obtained by solvothermal method. Scanning electron microscopy with EDAX confirmed the phase formation. Raman scattering spectra of bulk BiFeO3 single crystals have been measured which match well with reported spectra.

Sornadurai, D.; Ravindran, T. R.; Paul, V. Thomas; Sastry, V. Sankara [Condensed Matter Physics Division, Materials Science Group, Physical Metallurgy Division, Metallurgy and Materials Group, Indira Gandhi Centre for Atomic Research, Kalpakkam, Tamil Nadu (India); Condensed Matter Physics Division, Materials Science Group (India)

2012-06-05T23:59:59.000Z

360

STORAGE RING CROSS-SECTION MEASUREMENTS FOR ELECTRON IMPACT SINGLE AND DOUBLE IONIZATION OF Fe{sup 9+} AND SINGLE IONIZATION OF Fe{sup 10+}  

SciTech Connect

We have measured electron impact ionization from the ground state of Fe{sup 9+} and Fe{sup 10+} over the relative electron-ion collision energy ranges 200-1900 eV and 250-1800 eV, respectively. The ions were confined in an ion storage ring long enough for essentially all metastable levels to radiatively relax to the ground state. For single ionization, we find a number of discrepancies between the existing theoretical cross sections and our results. The calculations appear to neglect some excitation-autoionization (EA) channels, particularly from n = 3 to n' excitations, which are important near threshold, and those from n = 2 {yields} 3 excitations, which contribute at about 650 eV. Conversely, at higher energies the calculations appear to overestimate the importance of EA channels due to excitation into levels where n {>=} 4. The resulting experimental rate coefficients agree with the most recent theory for Fe{sup 9+} to within 16% and for Fe{sup 10+} to within 19% at temperatures where these ions are predicted to form in collisional ionization equilibrium. We have also measured double ionization of Fe{sup 9+} forming Fe{sup 11+} in the energy range 450-3000 eV and found that although there is an appreciable cross section for direct double ionization, the dominant mechanism appears to be through direct ionization of an inner shell electron producing an excited state that subsequently stabilizes through autoionization.

Hahn, M.; Novotny, O.; Savin, D. W. [Columbia Astrophysics Laboratory, Columbia University, 550 West 120th Street, New York, NY 10027 (United States); Becker, A.; Grieser, M.; Krantz, C.; Wolf, A. [Max-Planck-Institut fuer Kernphysik, Saupfercheckweg 1, D-69117 Heidelberg (Germany); Lestinsky, M.; Repnow, R. [GSI Helmholtzzentrum fuer Schwerionenforschung, Planckstr. 1, D-64291 Darmstadt (Germany); Mueller, A.; Schippers, S.; Spruck, K. [Institut fuer Atom- und Molekuelphysik, Justus-Liebig-Universitaet Giessen, Leihgesterner Weg 217, D-35392 Giessen (Germany)

2012-11-20T23:59:59.000Z

Note: This page contains sample records for the topic "fe ru os" 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

Vast Energy Resource in Residual Oil Zones, FE Study Says | Department of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Vast Energy Resource in Residual Oil Zones, FE Study Says Vast Energy Resource in Residual Oil Zones, FE Study Says Vast Energy Resource in Residual Oil Zones, FE Study Says July 20, 2012 - 1:00pm Addthis Washington, DC - Billions of barrels of oil that could increase domestic supply, help reduce imports, and increase U.S. energy security may be potentially recoverable from residual oil zones, according to initial findings from a study supported by the U.S. Department of Energy's Office of Fossil Energy (FE). The recently completed study, conducted by researchers at the University of Texas-Permian Basin (UTPB), is one of several FE-supported research projects providing insight that will help tap this valuable-but-overlooked resource. Residual oil zones, called ROZs, are areas of immobile oil found below the oil-water contact of a reservoir. ROZs are similar to reservoirs in the

362

Dominion Cove Point LNG, LP - FE Dkt. No 11-128-LNG | Department of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Dominion Cove Point LNG, LP - FE Dkt. No 11-128-LNG Dominion Cove Point LNG, LP - FE Dkt. No 11-128-LNG Dominion Cove Point LNG, LP - FE Dkt. No 11-128-LNG ORDER CONDITIONALLY GRANTING LONG-TERM MULTI-CONTRACT AUTHORIZATION TO EXPORT LIQUEFIED NATURAL GAS BY VESSEL FROM THE COVE POINT LNG TERMINAL TO NON-FREE TRADE AGREEMENT NATIONS Based on a review of the complete record and for the reasons set forth below, DOE/FE has concluded that the opponents of the DCP Application have not demonstrated that the requested authorization will be inconsistent with the public interest and finds that the exports proposed in this Application are likely to yield net economic benefits to the United States. DOE/FE further finds that DCP's proposed exports on behalf of other entities should be conditionally authorized at a volumetric rate not to exceed the

363

Comments of the Northeast Power Coordinating Council FE Docket No. 99-1 |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

the Northeast Power Coordinating Council FE Docket No. the Northeast Power Coordinating Council FE Docket No. 99-1 Comments of the Northeast Power Coordinating Council FE Docket No. 99-1 On July 21, 1999 the Department of Energy, hereinafter "DOE" or the "Department" issued its Notice of Proposed Amendment to the Predidential Permits and Export Authorizations and Delegation and Assignment to the Federal Energy Regulatory Commission. Comments of the Northeast Power Coordinating Council FE Docket No. 99-1 More Documents & Publications Joint comments of consumers energy company and the detriot edison company on notice of proposed amendment. FE Docket No. 99-1 Motion to Intervene and Comments of Public Utility District No. 1 (Pend Oreille County, Washington) on PP 99-1 Notice of Intent to Amend

364

EA-1188: Chevron U.S.A., Inc. and Santa Fe Energy Resources, Inc. Midway  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

188: Chevron U.S.A., Inc. and Santa Fe Energy Resources, Inc. 188: Chevron U.S.A., Inc. and Santa Fe Energy Resources, Inc. Midway Valley 3D Seismic Project, Kern County, California EA-1188: Chevron U.S.A., Inc. and Santa Fe Energy Resources, Inc. Midway Valley 3D Seismic Project, Kern County, California SUMMARY This EA evaluates the environmental impacts for the proposed Midway Valley 3D Geophysical Exploration Project. Chevron U.S.A., Inc. and Santa Fe Energy Resources are proposing to conduct seismic investigations just southeast of the City of McKittrick and Derby Acres in the Buena Vista and Midway Valleys, Kern County, California. PUBLIC COMMENT OPPORTUNITIES None available at this time. DOCUMENTS AVAILABLE FOR DOWNLOAD January 13, 1999 EA-1188: Finding of No Significant Impact Chevron U.S.A., Inc. and Santa Fe Energy Resources, Inc. Midway Valley 3D

365

Ontario Power Generation Motion to Intervene & Comments in FE Docket No.  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Ontario Power Generation Motion to Intervene & Comments in FE Ontario Power Generation Motion to Intervene & Comments in FE Docket No. 99-1 Ontario Power Generation Motion to Intervene & Comments in FE Docket No. 99-1 Ontario Power Generation hereby moves to intervene in, and comments on, the DOE's proposed open access requirements for International Electric Transmission Facilities. Ontario Power Company Motion to Intervene & Comments in FE Docket No. 99-1 More Documents & Publications Motion to Intervene and Comments of Public Utility District No. 1 (Pend Oreille County, Washington) on PP 99-1 Notice of Intent to Amend Presidential Permit Motion to intervene and comments of the energy services group of Hydro-Quebec and H.Q. Energy Services (U.S.) Inc, on FE 99-1 Joint Motion to Intervene of Northern States Power Company (Minnesota) et

366

FePt-based exchange-coupled composite perpendicular recording media.  

Science Conference Proceedings (OSTI)

In order to demonstrate the strong and proper exchange coupling between bottom magnetic layer and capping magnetic layer in FePt-based exchange-coupled composite (ECC) perpendicular recording media, we have investigated the thermal stability, writability, degree of exchange coupling, and ECC gain factor of FePt-based ECC media as a function of the thickness of the capping FePt layer. With increasing the thickness of capping FePt layer, both thermal stability and media writability increase simultaneously as a result of the change from strong exchange coupling to proper exchange coupling. The proper exchange-coupled FePt ECC is a promising candidate for future high-density perpendicular recording.

Sun, C.; Stafford, D.; Acharya, R.; X-Ray Science Division; Western Digital Media

2010-06-01T23:59:59.000Z

367

Search for supernova {sup 60}Fe in the Earth's microfossil record  

Science Conference Proceedings (OSTI)

Approximately 2.8 Myr before the present our planet was subjected to the debris of a supernova explosion. The terrestrial proxy for this event was the discovery of live atoms of {sup 60}Fe in a deep-sea ferromanganese crust. The signature for this supernova event should also reside in magnetite (Fe{sub 3}O{sub 4}) microfossils produced by magnetotactic bacteria extant at the time of the Earth-supernova interaction, provided the bacteria preferentially uptake iron from fine-grained iron oxides and ferric hydroxides. Using empirically derived microfossil concentrations in a deep-sea drill core, we deduce a conservative estimate of the {sup 60}Fe fraction as {sup 60}Fe/Fe Almost-Equal-To 3.6 Multiplication-Sign 10{sup -15}. This value sits comfortably within the sensitivity limit of present accelerator mass spectrometry capabilities.

Bishop, S.; Ludwig, P.; Egli, R.; Faestermann, T.; Korschinek, G.; Rugel, G. [Technische Universitaet Muenchen, James Franck Str. 1, D-85748 Garching (Germany); Department of Earth and Environmental Sciences, Ludwig-Maximilians University, Theresienstrasse 41 80333 Munich (Germany); Technische Universitaet Muenchen, James Franck Str. 1, D-85748 Garching (Germany); Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstra. 400, D-01328 Dresden (Germany)

2012-11-12T23:59:59.000Z

368

Synthesis of LiFePO{sub 4} with fine particle by co-precipitation method  

SciTech Connect

LiFePO{sub 4} is a potential candidate for the cathode material of the lithium secondary batteries. A co-precipitation method was adopted to prepare LiFePO{sub 4} because it is simple and cheap. Nitrogen gas was needed to prevent oxidation of Fe{sup 2+} in the aqueous solution. The co-precipitated precursor shows the high reactivity with the reductive gas, and the single phase of LiFePO{sub 4} is successfully synthesized with the aid of carbon under less reductive conditions. LiFePO{sub 4} fine powder prepared by co-precipitation method shows high rate capability, impressive specific capacity and cycle property.

Park, K.S. [Texas Materials Institute, University of Texas at Austin, Austin, TX 78712 (United States)]. E-mail: gappa37@dreamwiz.com; Kang, K.T. [Department of Materials Science and Engineering, KAIST, Daejeon 305-701 (Korea, Republic of); Lee, S.B. [Department of Materials Science and Engineering, KAIST, Daejeon 305-701 (Korea, Republic of); Kim, G.Y. [Department of Materials Science and Engineering, KAIST, Daejeon 305-701 (Korea, Republic of); Park, Y.J. [Battery Technology Team, ETRI, Daejon 305-350 (Korea, Republic of); Kim, H.G. [Department of Materials Science and Engineering, KAIST, Daejeon 305-701 (Korea, Republic of)

2004-10-04T23:59:59.000Z

369

The FE-I4 Pixel Readout Chip and the IBL Module  

SciTech Connect

FE-I4 is the new ATLAS pixel readout chip for the upgraded ATLAS pixel detector. Designed in a CMOS 130 nm feature size process, the IC is able to withstand higher radiation levels compared to the present generation of ATLAS pixel Front-End FE-I3, and can also cope with higher hit rate. It is thus suitable for intermediate radii pixel detector layers in the High Luminosity LHC environment, but also for the inserted layer at 3.3 cm known as the 'Insertable B-Layer' project (IBL), at a shorter timescale. In this paper, an introduction to the FE-I4 will be given, focusing on test results from the first full size FE-I4A prototype which has been available since fall 2010. The IBL project will be introduced, with particular emphasis on the FE-I4-based module concept.

Barbero, Marlon; Arutinov, David; Backhaus, Malte; Fang, Xiao-Chao; Gonella, Laura; Hemperek, Tomasz; Karagounis, Michael; Hans, Kruger; Kruth, Andre; Wermes, Norbert; /Bonn U.; Breugnon, Patrick; Fougeron, Denis; Gensolen, Fabrice; Menouni, Mohsine; Rozanov, Alexander; /Marseille, CPPM; Beccherle, Roberto; Darbo, Giovanni; /INFN, Genoa; Caminada, Lea; Dube, Sourabh; Fleury, Julien; Gnani, Dario; /LBL, Berkeley /NIKHEF, Amsterdam /Gottingen U. /SLAC

2012-05-01T23:59:59.000Z

370

Recycling of LiFePO4 Batteries  

NLE Websites -- All DOE Office Websites (Extended Search)

8-11, 2011 8-11, 2011 Linda Gaines Center for Transportation Research Argonne National Laboratory Recycling of LiFePO 4 Batteries 7th International Symposium on Inorganic Phosphate Materials Phosphate Materials for Energy Storage We don't want to trade one crisis for another!  Battery material shortages are unlikely - We demonstrated that lithium demand can be met - Recycling mitigates potential scarcity  Life-cycle analysis checks for unforeseen impacts  We need to find something to do with the used materials - Safe - Economical 2 Battery materials could get used multiple times Initial Use Automotive power Secondary Use Utility storage Residential storage Power at remote location Refurbishment Rejuvenate (change electrolyte) Switch out bad module

371

Comparison of LiFePO4 from different sources  

DOE Green Energy (OSTI)

The lithium iron phosphate chemistry is plagued by the poor conductivity and slow diffusion in the solid phase. In order to alleviate these problems, various research groups have adopted different strategies including decreasing the particle sizes, increasing the carbon content, and adding dopants. In this study, we obtained LiFePO{sub 4} powders and/or electrodes from six different sources and used a combined model-experimental approach to compare the performance. Samples ranged from 0.4% to 15% ''in-situ'' carbon. In addition, particle sizes varied by as much as an order of magnitude between samples. The study detailed in this manuscript allows us to provide insight into the relative importance of the conductivity of the samples compared to the particle size, the impact of having a distribution in particle sizes, and ideas for making materials in order to maximize the power capability of this chemistry.

Striebel, Kathryn; Shim, Joongpyo; Srinivasan, Venkat; Newman, John

2004-06-21T23:59:59.000Z

372

Comparison of LiFePO4 from different sources  

DOE Green Energy (OSTI)

The lithium iron phosphate chemistry is plagued by the poor conductivity and slow lithium diffusion in the solid phase. In order to alleviate these problems, various research groups have adopted different strategies including decreasing the particle sizes, increasing the carbon content, and adding dopants. In this study we obtained LiFePO4 electrodes from six different sources and used a combined model-experimental approach to compare the performance. Samples ranged from one with no carbon coating to one with 15 percent coating. In addition, particle sizes varied by as much as a order of magnitude between samples. The study detailed in this manuscript allows us to provide insight into the relative importance of the conductivity of the samples compared to the particle size, the impact of dopant on performance and ideas for making materials in order to maximize the power capability of this chemistry.

Striebel, Kathryn; Shim, Joongpyo; Srinivasan, Venkat; Newman, John

2003-11-25T23:59:59.000Z

373

FE Press Releases and Techlines | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

July 9, 2013 July 9, 2013 NETL Innovations Recognized with R&D 100 Awards Two technologies advanced by the FE's National Energy Technology Laboratory in collaboration with strategic partners have been recognized by R&D Magazine as among the 100 most technologically significant products introduced into the commercial marketplace within the past year. June 17, 2013 An innovative airfoil manufacturing technology that promises to improve the performance of state-of-the-art gas turbines has been commercialized through research sponsored by the U.S. Department of Energy. Photo courtesy of Mikro Systems, Inc. DOE-Sponsored Research Improves Gas Turbine Performance Small Business Innovative Research Grants Achieve Commercialization Goals for Novel Gas Turbine Manufacturing Technology

374

FE Oil and Natural Gas News | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Oil and Natural Gas News Oil and Natural Gas News FE Oil and Natural Gas News RSS November 15, 2013 Energy Department Authorizes Additional Volume at Proposed Freeport LNG Facility to Export Liquefied Natural Gas The Department of Energy announced the conditional authorization for Freeport LNG Expansion, L.P. and FLNG Liquefaction, LLC to export liquefied natural gas to countries that do not have a Free Trade Agreement with the U.S. This is the fifth conditional authorization the Department has announced. August 23, 2013 DOE and the Bureau of Safety and Environmental Enforcement Sign Memorandum of Collaboration for Safe Offshore Energy Development The Department of Energy's (DOE) Office of Fossil Energy and The Bureau of Safety and Environmental Enforcement (BSEE) signed a Memorandum of

375

Microsoft Word - FE PSRP 08-19-09 _3_.doc  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

PSRP Name: Fossil Energy Research & Development (R&D) PSRP Name: Fossil Energy Research & Development (R&D) PSRP Lead Program Office and/or Laboratory/Site Office: Office of Fossil Energy (FE)/National Energy Technology Laboratory (NETL) PSRP Lead Manager: Victor K. Der Phone: (202) 586-6660 E-mail: victor.der@hq.doe.gov Address: 1000 Independence Avenue, SW; Washington DC 20585 Does this program align with an existing PART program? Y Does this program align with an existing CFDA program? N 1. Objectives Program Purpose The American Recovery and Reinvestment Act of 2009 (ARRA, or Recovery Act) provides an additional $3,400,000,000 for Fossil Energy Research and Development to develop and demonstrate CCS technology, in partnership with industry, and to transition this technology to

376

FE Carbon Capture and Storage News | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Carbon Capture and Storage News Carbon Capture and Storage News FE Carbon Capture and Storage News RSS November 7, 2013 Energy Department Invests to Drive Down Costs of Carbon Capture, Support Reductions in Greenhouse Gas Pollution 18 Innovative Carbon Capture Projects Will Help Make Fossil Energy Use Cleaner, Safer and More Sustainable as Part of the Obama Administration's Climate Action Plan August 15, 2013 Historically Black Colleges and Universities Receive Funds for Fossil Energy Research Five fossil energy-related projects that will help maintain the nation's energy portfolio while also providing educational and research training opportunities for tomorrow's scientists and engineers have been selected for funding by the U.S. Department of Energy (DOE). August 14, 2013 DOE Selects Ten Projects to Conduct Advanced Turbine Technology Research

377

FE Carbon Capture and Storage News | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Carbon Capture and Storage News Carbon Capture and Storage News FE Carbon Capture and Storage News RSS June 9, 2010 Award-Winning DOE Technology Scores Success in Carbon Storage Project The ability to detect and track the movement of carbon dioxide in underground geologic storage reservoirs -- an important component of carbon capture and storage technology -- has been successfully demonstrated at a U.S. Department of Energy New Mexico test site. April 20, 2010 Research Experience in Carbon Sequestration 2010 Now Accepting Applications Students and early career professionals can gain hands-on experience in areas related to carbon capture and storage by participating in the Research Experience in Carbon Sequestration program. March 15, 2010 Illinois CO2 Injection Project Moves Another Step Forward

378

Vacancy-driven anisotropic defect distribution in the battery-cathode material LiFePO4  

Science Conference Proceedings (OSTI)

Li-ion mobility in LiFePO{sub 4}, a key property for energy applications, is impeded by Fe antisite defects (Fe{sub Li}) that form in select b-axis channels. Here we combine first-principles calculations, statistical mechanics, and scanning transmission electron microscopy to identify the origin of the effect: Li vacancies (V{sub Li}) are confined in one-dimensional b-axis channels, shuttling between neighboring Fe{sub Li}. Segregation in select channels results in shorter Fe{sub Li}-Fe{sub Li} spans, whereby the energy is lowered by the V{sub Li}'s spending more time bound to end-point Fe{sub Li}'s. V{sub Li}-Fe{sub Li}-V{sub Li} complexes also form, accounting for observed electron energy loss spectroscopy features.

Lee, Jaekwang [Vanderbilt University; Zhou, Wu [Vanderbilt University; Idrobo Tapia, Juan C [ORNL; Pennycook, Stephen J [ORNL; Pantelides, Sokrates T. [Vanderbilt University; Biegalski, Michael D [ORNL

2011-01-01T23:59:59.000Z

379

Development of FeNiMoB thin film materials for microfabricated magnetoelastic sensors  

Science Conference Proceedings (OSTI)

Metglas{sup TM} 2826MB foils of 25-30 {mu}m thickness with the composition of Fe{sub 40}Ni{sub 38}Mo{sub 4}B{sub 18} have been used for magnetoelastic sensors in various applications over many years. This work is directed at the investigation of {approx}3 {mu}m thick iron-nickel-molybdenum-boron (FeNiMoB) thin films that are intended for integrated microsystems. The films are deposited on Si substrate by co-sputtering of iron-nickel (FeNi), molybdenum (Mo), and boron (B) targets. The results show that dopants of Mo and B can significantly change the microstructure and magnetic properties of FeNi materials. When FeNi is doped with only Mo its crystal structure changes from polycrystalline to amorphous with the increase of dopant concentration; the transition point is found at about 10 at. % of Mo content. A significant change in anisotropic magnetic properties of FeNi is also observed as the Mo dopant level increases. The coercivity of FeNi films doped with Mo decreases to a value less than one third of the value without dopant. Doping the FeNi with B together with Mo considerably decreases the value of coercivity and the out-of-plane magnetic anisotropy properties, and it also greatly changes the microstructure of the material. In addition, doping B to FeNiMo remarkably reduces the remanence of the material. The film material that is fabricated using an optimized process is magnetically as soft as amorphous Metglas{sup TM} 2826MB with a coercivity of less than 40 Am{sup -1}. The findings of this study provide us a better understanding of the effects of the compositions and microstructure of FeNiMoB thin film materials on their magnetic properties.

Liang Cai; Gooneratne, Chinthaka; Cha, Dongkyu; Chen Long; Kosel, Jurgen [Computer Electrical and Mathematical Sciences and Engineering, King Abdullah University of Science and Technology, 4700 KAUST, Thuwal 23955 (Saudi Arabia); Gianchandani, Yogesh [Department of Electrical Engineering and Computer Science, 1301 Beal Ave., University of Michigan, Ann Arbor, Michigan 48109 (United States)

2012-12-01T23:59:59.000Z

380

Synthesis and magnetic properties of the double layer perovskite CeBaFe2O5+w  

E-Print Network (OSTI)

Synthesis and magnetic properties of the double layer perovskite CeBaFe2O5+w R. L. de Almeida,1 O The synthesis, crystallographic structure, and magnetic properties of polycrystalline single-phase samples of CeBaFe results on the successful prepara- tion and characterization of polycrystalline CeBaFe2O5+w samples. Ideal

de Lima, Oscar Ferreira

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381

Evolutionary Significance of an Algal Gene Encoding an [FeFe]-Hydrogenase with F-Domain Homology and Hydrogenase Activity in Chlorella Variabilis NC64A  

SciTech Connect

[FeFe]-hydrogenases (HYDA) link the production of molecular H{sub 2} to anaerobic metabolism in many green algae. Similar to Chlamydomonas reinhardtii, Chlorella variabilis NC64A (Trebouxiophyceae, Chlorophyta) exhibits [FeFe]-hydrogenase (HYDA) activity during anoxia. In contrast to C. reinhardtii and other chlorophycean algae, which contain hydrogenases with only the HYDA active site (H-cluster), C. variabilis NC64A is the only known green alga containing HYDA genes encoding accessory FeS cluster-binding domains (F-cluster). cDNA sequencing confirmed the presence of F-cluster HYDA1 mRNA transcripts, and identified deviations from the in silico splicing models. We show that HYDA activity in C. variabilis NC64A is coupled to anoxic photosynthetic electron transport (PSII linked, as well as PSII-independent) and dark fermentation. We also show that the in vivo H{sub 2}-photoproduction activity observed is as O2 sensitive as in C. reinhardtii. The two C. variabilis NC64A HYDA sequences are similar to homologs found in more deeply branching bacteria (Thermotogales), diatoms, and heterotrophic flagellates, suggesting that an F-cluster HYDA is the ancestral enzyme in algae. Phylogenetic analysis indicates that the algal HYDA H-cluster domains are monophyletic, suggesting that they share a common origin, and evolved from a single ancestral F-cluster HYDA. Furthermore, phylogenetic reconstruction indicates that the multiple algal HYDA paralogs are the result of gene duplication events that occurred independently within each algal lineage. Collectively, comparative genomic, physiological, and phylogenetic analyses of the C. variabilis NC64A hydrogenase has provided new insights into the molecular evolution and diversity of algal [FeFe]-hydrogenases.

Meuser, J. E.; Boyd, E. S.; Ananyev, G.; Karns, D.; Radakovits, R.; Murthy, U. M. N.; Ghirardi, M. L.; Dismukes, G. C.; Peters, J. W.; Posewitz, M. C.

2011-10-01T23:59:59.000Z

382

GRAIN BOUNDARY STRENGTHENING PROPERTIES OF TUNGSTEN ALLOYS  

SciTech Connect

Density functional theory was employed to investigate grain boundary (GB) properties of W alloys. A range of substitutional solutes across the Periodic Table was investigated to understand the behavior of different electronic orbitals in changing the GB cleavage energy in the ?27a[110]{525} GB. A number of transition metals were predicted to enhance the GB cohesion. This includes Ru, Re, Os, Ir, V, Cr, Mn, Fe, Co, Ti, Hf, Ta and Nb. While lanthanides, s and p elements were tended to cause GB embrittlement.

Setyawan, Wahyu; Kurtz, Richard J.

2012-10-10T23:59:59.000Z

383

Force Field Development and Molecular Dynamics of [NiFe] Hydrogenase  

Science Conference Proceedings (OSTI)

Classical molecular force-field parameters describing the structure and motion of metal clusters in [NiFe] hydrogenase enzymes can be used to compare the dynamics and thermodynamics of [NiFe] under different oxidation, protonation, and ligation circumstances. Using density functional theory (DFT) calculations of small model clusters representative of the active site and the proximal, medial, and distal Fe/S metal centers and their attached protein side chains, we have calculated classical force-field parameters for [NiFe] in reduced and oxidized states, including internal coordinates, force constants, and atom-centered charges. Derived force constants revealed that cysteinate ligands bound to the metal ions are more flexible in the Ni-B active site, which has a bridging hydroxide ligand, than in the Ni-C active site, which has a bridging hydride. Ten nanosecond all-atom, explicit-solvent MD simulations of [NiFe] hydrogenase in oxidized and reduced catalytic states established the stability of the derived force-field parameters in terms of C{alpha} and metal cluster fluctuations. Average active site structures from the protein MD simulations are consistent with [NiFe] structures from the Protein Data Bank, suggesting that the derived force-field parameters are transferrable to other hydrogenases beyond the structure used for testing. A comparison of experimental H{sub 2}-production rates demonstrated a relationship between cysteinate side chain rotation and activity, justifying the use of a fully dynamic model of [NiFe] metal cluster motion.

Smith, Dayle MA; Xiong, Yijia; Straatsma, TP; Rosso, Kevin M.; Squier, Thomas C.

2012-05-09T23:59:59.000Z

384

F.E. Warren Air Force Base Wind Farm | Open Energy Information  

Open Energy Info (EERE)

F.E. Warren Air Force Base Wind Farm F.E. Warren Air Force Base Wind Farm Jump to: navigation, search Name F.E. Warren Air Force Base Wind Farm Facility F.E. Warren Air Force Base Sector Wind energy Facility Type Community Wind Facility Status In Service Owner F.E. Warren Air Force Base Developer F.E. Warren Air Force Base Energy Purchaser F.E. Warren Air Force Base Location Near Cheyenne WY Coordinates 41.175569°, -104.880778° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":41.175569,"lon":-104.880778,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

385

Crystal structures of mixed-conducting oxides present in the Sr-Fe-Co-O system.  

DOE Green Energy (OSTI)

The potential applications of mixed-conducting ceramic oxides include solid-oxide fuel cells, rechargeable batteries, gas sensors and oxygen-permeable membranes. Several perovskite-derived mixed Sr-Fe-Co oxides show not only high electrical-conductivity but also appreciable oxygen-permeability at elevated temperatures. For example, dense ceramic membranes of SrFeCo{sub 0.5}O{sub 3{minus}{delta}} can be used to separate oxygen from air without the need for external electrical circuitry. The separated oxygen can be directly used for the partial oxidation of methane to produce syngas. Quantitative phase analysis of the SrFeCo{sub 0.5}O{sub 3{minus}{delta}} material has revealed that it is predominantly composed of two Sr-Fe-Co-O systems, Sr{sub 4}Fe{sub 6{minus}x}Co{sub x}O{sub 13} and SrFe{sub 1{minus}x}Co{sub x}O{sub 3{minus}{delta}}. Here we report preliminary structural findings on the SrFe{sub 1{minus}x}Co{sub x}O{sub 3{minus}{delta}} (0 {le} x {le} 0.3) system.

Hodges, J. P.; Jorgensen, J. D.; Miler, D. J.; Ma, B.; Balachandran, U.; Richardson, J. W., Jr.

1998-01-14T23:59:59.000Z

386

Interaction of H2S with alpha-Fe2O3(0001) Surface  

SciTech Connect

The atomic-scale structural changes in an {alpha}-Fe2O3 (hematite) (0 0 0 1) surface induced by sulfidation and subsequent oxidation processes were studied by X-ray photoemission spectroscopy, LEED, and X-ray standing wave (XSW) measurements. Annealing the {alpha}-Fe2O3(0 0 0 1) with a H2S partial pressure of 1 x 10-7 Torr produced iron sulfides on the surface as the sulfur atoms reacted with the substrate Fe ions. The oxidation state of the substrate Fe changed from 3+ to 2+ as a result of the sulfidation. The XSW measured distance of the sulfur atomic-layer from the unrelaxed substrate oxygen layer was 3.16 Angstroms. The sulfide phase consisted of three surface domains identified by LEED. Formation of the two-dimensional FeS2 phase with structural parameters consistent with an outermost layer of (1 1 1) pyrite has been proposed. Atomic oxygen exposure oxidized the surface sulfide to a sulfate (SO{sup 2-}{sub 4}) and regenerated the {alpha}-Fe2O3(0 0 0 1) substrate, which was indicated by a (1 x 1) LEED pattern and the re-oxidization of Fe to 3+.

Kim,C.; Escuadro, A.; Bedzyk, M.

2007-01-01T23:59:59.000Z

387

Electrochemical performance of Sol-Gel synthesized LiFePO{sub 4} in lithium batteries  

DOE Green Energy (OSTI)

LiFePO{sub 4}, Li{sub 0.98}Mg{sub 0.01}FePO{sub 4}, and Li{sub 0.96}Ti{sub 0.01}FePO{sub 4} were synthesized via a sol-gel method, using a variety of processing conditions. For comparison, LiFePO{sub 4} was also synthesized from iron acetate by a solid state method. The electrochemical performance of these materials in lithium cells was evaluated and correlated to mean primary particle size and residual carbon structure in the LiFePO{sub 4} samples, as determined by Raman microprobe spectroscopy. For materials with mean agglomerate sizes below 20 {micro}m, an association between structure and crystallinity of the residual carbon and improved utilization was observed. Addition of small amounts of organic compounds or polymers during processing results in carbon coatings with higher graphitization ratios and better electronic properties on the LiFePO{sub 4} samples and improves cell performance in some cases, even though total carbon contents remain very low (<2%). In contrast, no performance enhancement was seen for samples doped with Mg or Ti. These results suggest that it should be possible to design high power LiFePO{sub 4} electrodes without unduly compromising energy density by optimizing the carbon coating on the particles.

Hu, Yaoqin; Doeff, Marca M.; Kostecki, Robert; Finones, Rita

2003-06-16T23:59:59.000Z

388

Heterogeneous Reduction of U6+ by Structural Fe2+ From Theory and Experiment  

SciTech Connect

Computational and experimental studies were performed to explore heterogeneous reduction of U6+ by structural Fe2+ at magnetite (Fe3O4) surfaces. Molecular Fe-Fe-U models representing a uranyl species adsorbed in a biatomic bidentate fashion to an iron surface group were constructed. Various possible charge distributions in this model surface complex were evaluated in terms of their relative stabilities and electron exchange rates using ab initio molecular orbital methods. Freshly-cleaved, single crystals of magnetite with different initial Fe2+/Fe3+ ratios were exposed to uranyl-nitrate solution (pH ~ 4) for 90 hours. X ray photoelectron spectroscopy and electron microscopy indicated the presence of a mixed U6+/U5+ precipitate heterogeneously nucleated and grown on stoichiometric magnetite surfaces, but only the presence of sorbed U6+ and no precipitate on sub-stoichiometric magnetite surfaces. Calculated electron transfer rates indicate that sequential multi-electron uranium reduction is not kinetically limited by conductive electron resupply to the adsorption site. Both theory and experiment point to local structural Fe2+ density and sterically accessible uranium coordination environments as key controls on uranium reduction extent and rate. Uranium incorporation in solid phases where its coordination is constrained to the 6-fold uranate type should widen the stability field of U5+ relative to U6+. If uranium cannot acquire 8 fold coordination then reduction may proceed to U5+ but not necessarily U4+.

Skomurski, Frances N.; Ilton, Eugene S.; Engelhard, Mark H.; Arey, Bruce W.; Rosso, Kevin M.

2011-11-15T23:59:59.000Z

389

Magnetic ordering in tetragonal FeS: Evidence for strong itinerant spin fluctuations  

DOE Green Energy (OSTI)

Mackinawite is a naturally occurring layer-type FeS mineral important in biogeochemical cycles and, more recently, in the development of microbial fuel cells. Conflicting results have been published as to the magnetic properties of this mineral, with Moessbauer spectroscopy indicating no magnetic ordering down to 4.2 K but density functional theory (DFT) predicting an antiferromagnetic ground state, similar to the Fe-based high-temperature superconductors with which it is isostructural and for which it is known that magnetism is suppressed by strong itinerant spin fluctuations. We investigated this latter possibility for mackinawite using photoemission spectroscopy, near-edge x-ray absorption fine structure spectroscopy, and DFT computations. Our Fe 3{sub s} core-level photoemission spectrum of mackinawite showed a clear exchange-energy splitting (2.9 eV) consistent with a 1 {micro}{sub B} magnetic moment on the Fe ions, while the Fe L-edge x-ray absorption spectrum indicated rather delocalized Fe 3{sub d} electrons in mackinawite similar to those in Fe metal. Our DFT computations demonstrated that the ground state of mackinawite is single-stripe antiferromagnetic, with an Fe magnetic moment (2.7 {micro}{sub B}) that is significantly larger than the experimental estimate and has a strong dependence on the S height and lattice parameters. All of these trends signal the existence of strong itinerant spin fluctuations. If spin fluctuations prove to be mediators of electron pairing, we conjecture that mackinawite may be one of the simplest Fe-based superconductors.

Kwon, K.D.; Refson, K.; Bone, S.; Qiao, R.; Yang, W.; Liu, Z.; Sposito, G.

2010-11-01T23:59:59.000Z

390

NdBaFe{sub 2}O{sub 5+w} and steric effect of Nd on valence mixing and ordering of Fe  

Science Conference Proceedings (OSTI)

NdBaFe{sub 2}O{sub 5} above and below Verwey transition is studied by synchrotron X-ray powder diffraction and Moessbauer spectroscopy and compared with GdBaFe{sub 2}O{sub 5} that adopts a higher-symmetry charge-ordered structure typical of the Sm-Ho variants of the title phase. Differences are investigated by Moessbauer spectroscopy accounting for iron valence states at their local magnetic and ionic environments. In the charge-ordered state, the orientation of the electric-field gradient (EFG) versus the internal magnetic field (B) agrees with experiment only when contribution from charges of the ordered d{sub xz} orbitals of Fe{sup 2+} is included, proving thus the orbital ordering. The EFG magnitude indicates that only some 60% of the orbital order occurring in the Sm-Ho variants is achieved in NdBaFe{sub 2}O{sub 5}. The consequent diminishing of the orbit contribution (of opposite sign) to the field B at the Fe{sup 2+} nucleus explains why B is larger than for the Sm-Ho variants. The decreased orbital ordering in NdBaFe{sub 2}O{sub 5} causes a corresponding decrease in charge ordering, which is achieved by decreasing both the amount of the charge-ordered iron states in the sample and their fractional valence separation as seen by the Moessbauer isomer shift. The charge ordering in NdBaFe{sub 2}O{sub 5+w} is more easily suppressed by the oxygen nonstoichiometry (w) than in the Sm-Ho variants. Also the valence mixing into Fe{sup 2.5+} is destabilized by the large size of Nd. The orientation of the EFG around this valence-mixed iron can only be accounted for when the valence-mixing electron is included in the electrostatic ligand field. This proves that the valence mixing occurs between the two iron atoms facing each other across the structural plane of the rare-earth atoms. -- Graphical Abstract: Moessbauer spectrum detects ordering of d{sub xz} orbitals of Fe{sup II}O{sub 5} via the electric-field gradient (EFG) of the orbital, which makes the main component of the total EFG parallel with the magnetic moment B. Display Omitted

Linden, J. [Department of Physics, AAbo Akademi, FI-20500 Turku (Finland); Karen, P., E-mail: pavel.karen@kjemi.uio.n [Department of Chemistry, University of Oslo, P.O.Box 1033, Blindern, N-0315 Oslo (Norway)

2010-11-15T23:59:59.000Z

391

Bond mobility mechanism in grain boundary embrittlement: First-principles tensile tests of Fe with a P-segregated {Sigma}3 grain boundary  

Science Conference Proceedings (OSTI)

First-principles simulated tensile tests have been performed on Fe with a P-segregated grain boundary to investigate the nature of the bond mobility mechanism in grain boundary embrittlement. The first site for bond breaking was the Fe-P bond, despite its high charge density. This is because the Fe-P bond exhibited the covalentlike characteristics of a localized bonding and the mobility of electrons was reduced. The breaking of the Fe-P bond accelerated the breaking of the Fe-Fe bond around the Fe-P bond because the Fe-P bond breaking affected the electron density of states of the Fe-Fe bond. Thus, P segregation enhanced the grain boundary embrittlement in Fe.

Yuasa, Motohiro; Mabuchi, Mamoru [Department of Energy Science and Technology, Graduate School of Energy Science, Kyoto University, Yoshidahonmachi, Sakyo-ku, Kyoto 606-8501 (Japan)

2010-09-01T23:59:59.000Z

392

Ni spin switching induced by magnetic frustration in FeMn/Ni/Cu(001)  

SciTech Connect

Epitaxially grown FeMn/Ni/Cu(001) films are investigated by Photoemission Electron Microscopy and Magneto-Optic Kerr Effect. We find that as the FeMn overlayer changes from paramagnetic to antiferromagnetic state, it could switch the ferromagnetic Ni spin direction from out-of-plane to in-plane direction of the film. This phenomenon reveals a new mechanism of creating magnetic anisotropy and is attributed to the out-of-plane spin frustration at the FeMn-Ni interface.

Wu, J.; Choi, J.; Scholl, A.; Doran, A.; Arenholz, E.; Hwang, Chanyong; Qiu, Z. Q.

2009-03-08T23:59:59.000Z

393

Magnetism and transport properties of epitaxial Fe-Ga thin films on GaAs(001)  

SciTech Connect

Epitaxial Fe-Ga thin films in disordered bcc {alpha}-Fe crystal structure (A2) have been grown on GaAs(001) by molecular beam epitaxy. The saturated magnetization (M{sub S}) decreased from 1371 to 1105 kA/m with increasing Ga concentration from 10.5 to 24.3 % at room temperature. The lattice parameter increased with the increase in Ga content because of the larger atomic radius of Ga atom than that of Fe. The increase in carrier density with Ga content caused in lower resistivity.

Duong Anh Tuan; Shin, Yooleemi; Cho, Sunglae [Department of Physics, University of Ulsan, Ulsan 680-749 (Korea, Republic of); Dang Duc Dung [Department of Physics, University of Ulsan, Ulsan 680-749 (Korea, Republic of); Department of General Physics, School of Engineering Physics, Ha Noi University of Science and Technology, 1 Dai Co Viet road, Ha Noi (Viet Nam); Vo Thanh Son [Centers for Nanobioenineering and Spintronics, Chungnam National University, Daejon 350-746 (Korea, Republic of)

2012-04-01T23:59:59.000Z

394

In situ high temperature crystallization study of sputter deposited amorphous W-Fe-C films  

Science Conference Proceedings (OSTI)

The structural behavior of amorphous W[sub 46]Fe[sub 13]C[sub 41] and W[sub 36]Fe[sub 31]C[sub 33] films produced by sputtering have been studied in situ during annealing up to [approximately] 950 C by means of hot stage transmission electron microscopy. Differential thermal analysis and X-ray diffraction were used as complementary experimental techniques. The results are presented and correlated with the equilibrium phases anticipated from the W-Fe-C ternary phase diagram and with previous studied on similar films deposited and annealed onto substrates.

Trindade, B.; Vieira, M.T. (Univ. de Coimbra (Portugal). Dept. de Engenharia Mecanica); Grosse, E.B. (National Superieure des Mines de Nancy (France). Lab. de Sciences et Genie des Surfaces)

1995-01-01T23:59:59.000Z

395

Effect of conductive additives in LiFePO4 cathode for lithium-ion batteries  

DOE Green Energy (OSTI)

The electrochemical properties of LiFePO4 cathodes with different carbon contents were studied to find out the role of carbon as conductive additive. LiFePO4 cathodes containing from 0 percent to 12 percent of conductive additive (carbon black or mixture of carbon black and graphite) were cycled at different C rates. The capacity of LiFePO4 cathode increased, as conductive additive content increased. Carbon increased the utilization of active material and the electrical conductivity of electrode, but decreased volumetric capacity of electrode.

Shim, J.; Guerfi, A.; Zaghib, K.; Striebel, K.A.

2003-11-25T23:59:59.000Z

396

Electronic structure of phospho-olivines LixFePO4 (x=0,1) fromsoft-x-ray-absorption and -emission spectroscopies  

Science Conference Proceedings (OSTI)

The electronic structure of the phospho-olivine LixFePO4 wasstudied using soft-x-ray-absorption (XAS) and emission spectroscopies.Characteristic changes in the valence and conduction bands are observedupon delithation of LiFePO4 into FePO4. In LiFePO4, the Fe-3d states arelocalized with little overlap with the O-2p states. Delithiation ofLiFePO4 gives stronger hybridization between Fe-3d states and O-2p statesleading to delocalization of the O-2p states. The Fe L-edge absorptionspectra yield "fingerprints" of the different valence states of Fe inLiFePO4 and FePO4. Resonant soft-x-ray-emission spectroscopy at the Fe Ledge shows strong contributions from resonant inelastic soft x-rayscattering (RIXS), which is described using an ionic picture of the Fe-3dstates. Together the Fe L-edge XAS and RIXS study reveals a bondingcharacter of the Fe 3d-O2p orbitals in FePO4 in contrast to a nonbondingcharacter in LiFePO4.

Augustsson, A.; Zhuang, G.V.; Butorin, S.M.; Osorio-Guillen,J.M.; Dong, C.L.; Ahuja, R.; Chang, C.L.; Ross, P.N.; Nordgren, J.; Guo,J.-H.

2005-07-17T23:59:59.000Z

397

Structure of epitaxial (Fe,N) codoped rutile TiO2 thin films by x-ray absorption  

Science Conference Proceedings (OSTI)

Homoepitaxial thin films of Fe:TiO2 and (Fe,N):TiO2 were deposited on rutile(110) by molecular beam epitaxy. X-ray absorption near edge spectroscopy (XANES) spectra were collected at the Ti L-edge, Fe L-edge, O K-edge, N K-edge, and Ti K-edge. No evidence of structural disorder associated with a high concentration of oxygen vacancies is observed. Substitution of Fe for Ti could not be confirmed, although secondary phase Fe2O3 and metallic Fe can be ruled out. The similarity of the N K-edge spectra to O, and the presence of a strong x-ray linear dichroism (XLD) signal for the N K-edge, indicates that N is substitutional for O in the rutile lattice, and is not present as a secondary phase such as TiN. Simulations of the XANES spectra qualitatively confirm substitution, although N appears to be present in more than one local environment. Neither Fe:TiO2 nor (Fe,N):TiO2 exhibit intrinsic room temperature ferromagnetism, despite the presence of mixed valence Fe(II)/Fe(III) in the reduced (Fe,N):TiO2 film.

Kaspar, Tiffany C.; Ney, A.; Mangham, Andrew N.; Heald, Steve M.; Joly, Yves; Ney, V.; Wilhelm, F.; Rogalev, A.; Yakou, Flora; Chambers, Scott A.

2012-07-23T23:59:59.000Z

398

Determination of the Fe magnetic anisotropies and the CoO frozen spins in epitaxial CoO/Fe/Ag(001)  

SciTech Connect

CoO/Fe/Ag(001) films were grown epitaxially and studied by X-ray Magnetic Circular Dichroism (XMCD) and X-ray Magnetic Linear Dichroism (XMLD). After field cooling along the Fe[100] axis to 80 K, exchange bias, uniaxial anisotropy, and 4-fold anisotropy of the films were determined by hysteresis loop and XMCD measurements by rotating the Fe magnetization within the film plane. The CoO frozen spins were determined by XMLD measurement as a function of CoO thickness.We find that among the exchange bias, uniaxial anisotropy, and 4-fold anisotropy, only the uniaxial magnetic anisotropy follows thickness dependence of the CoO frozen spins.

Meng, J. Li, Y.; Park, J. S.; Jenkins, C. A.; Arenholz, E.; Scholl, A.; Tan, A.; Son, H.; Zhao, H. W.; Hwang, Chanyong; Qiu, Z. Q.

2011-04-28T23:59:59.000Z

399

Spin-resolved photoelectron spectroscopy of Fe3O4  

SciTech Connect

The existence of a new class of magnetic materials displaying metallic character for one electron spin population and insulating character for the other was first populated by DeGroot et al. in 1983 based on theoretical band structure calculations of the ferromagnetic Heusler alloy NiMnSb. Since then such half metallic materials, which by definition possess 100% electron polarization at the Fermi energy, have attracted considerable theoretical, experimental, and technological interest as potential pure spin sources for use in spintronic devices. In addition to Heusler alloys (e.g. NiMnSb, PtMnSb), half metallic character has also been predicted to occur in a wide range of manganites (e.g. La1-xCaxMnO3, La1-x-SrxMnO3), metallic oxides (e.g. Fe3O4, CrO2) and CMR systems. However, such predictions have proven to be extremely difficult to confirm experimentally. Possible reasons for this include the theoretical limitations arising from the complex crystallographic structure of many such materials and limitations in applying the single electron picture to materials where strong electron correlation may be present; this is compounded by experimental difficulties posed by their structural complexity and issues such as surface contamination, segregation, and reconstruction.

Morton, Simon; Waddill, Dan; Kim, S H.; Schuller, I K.; Chambers, Scott A.; Tobin, James G.

2002-08-01T23:59:59.000Z

400

The hydrogen embrittlement of Ni-Cr-Fe alloys  

Science Conference Proceedings (OSTI)

It has been proposed that the stress corrosion cracking (SCC) of nickel-based alloys in low-temperature hydrogenated water is due to hydrogen embrittlement. The purpose of this work was to investigate the role of chromium on hydrogen embrittlement of Ni-Cr-Fe alloys and thus develop a better understanding of the low-temperature SCC phenomenon. The effect of chromium on the hydrogen embrittlement was examined using tensile tests followed by material evaluation via scanning electron microscopy and light optical microscopy. Four alloys were prepared with chromium contents ranging from 6 wt. percent to 35 wt. percent. In the noncharged condition, ductility, as measured by the percent elongation or reduction in area, increased as the alloy chromium content increased. Hydrogen appeared to have only minor effects on the mechanical properties of the low chromium alloys. The addition of hydrogen had a marked effect on the ductility of the higher chromium alloys. In the 26% chromium alloy, the elongation to failure was reduced from 53% to 14% with a change in fracture mode from ductile dimple to intergranular failure. A maximum in embrittlement was observed in the 26% Cr alloy. The maximum in embrittlement coincided with the minimum in stacking-fault energy. It is proposed that the increased hydrogen embrittlement in the high-chromium alloys is due to increased slip planarity caused by the low stacking-fault energy. Slip planarity did not appear to affect the fracture of the noncharged specimens.

Symons, D.M.

1996-12-31T23:59:59.000Z

Note: This page contains sample records for the topic "fe ru os" 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.


401

Stellar pollution and [Fe/H] in the Hyades  

E-Print Network (OSTI)

The Hyades open cluster presents a unique laboratory for planet formation and stellar pollution studies because all of the stars have essentially the same age and were born from the same cloud of gas. Furthermore, with an age of roughly 650 Myr most of the intermediate and low mass stars are on the main sequence. Given these assumptions, the accretion of metal rich material onto the surface of a star during and shortly after the formation of planetary systems should be evident via the enhanced metallicity of the star. Building on previous work, stellar evolution models which include the effects of stellar pollution are applied to the Hyades. The results of several Monte Carlo simulations, in which the amount of accreted material is drawn at random from a Gaussian distribution with standard deviation equal to half the mean, are presented. An effective temperature-[Fe/H] relation is produced and compared to recent observations. The theoretical predictions presented in this letter will be useful in future searches for evidence of stellar pollution due to planet formation. It is concluded that stellar pollution effects at the mean level of >=2 Earth masses of iron are ruled out by current observational data.

Aaron Dotter; Brian Chaboyer

2003-08-15T23:59:59.000Z

402

XPS study of Ni-Fe manganite thermistor material  

SciTech Connect

The resistivity of the as-fabricated thermistor material, nickel-iron-manganite, changes during initial aging in the temperature range of 150-300{degrees}C before becoming stable. X-ray photoelectron spectroscopy (XPS) was used to determine if any valency change or chemical shift of the cations or oxygen occurred after aging. The goal of the study was to identify any ionic changes that might affect thermistor stability. The only observed changes in 2p{sub 3/2} peaks due to aging were those related to Ni ions; the same peaks for Mn, Fe, and O remained unchanged. The changes in the Ni 2p{sub 3/2} peak may be related to: (a) the migration of Ni{sup 2+} ions from octahedral to tetrahedral sites, (b) subtle changes in the energy states of Ni{sup 2+} which promoted a more stable ionic structure, and/or (c) the presence of Ni{sup 3+} ions, some of which revert back to Ni{sup 2+}.

Braski, D.N. [Oak Ridge National Lab., TN (United States); Osborne, N.R. [Univ. of Dayton Research Institute, OH (United States); Zurbuchen, J.M. [Yellow Springs Instruments, Inc., OH (United States)

1995-03-01T23:59:59.000Z

403

OFFICE OF FOSSIL ENERGY (FE) PROGRAMS ARE FOCUSED ON ACTIVITIES RELATED TO THE RELIABLE, EFFICIENT, AFFORDABLE  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

OFFICE OF FOSSIL ENERGY (FE) PROGRAMS ARE FOCUSED ON OFFICE OF FOSSIL ENERGY (FE) PROGRAMS ARE FOCUSED ON ACTIVITIES RELATED TO THE RELIABLE, EFFICIENT, AFFORDABLE AND ENVIRONMENTALLY SOUND USE OF FOSSIL FUELS, AND ENHANC- ING U.S. ECONOMIC, ENVIRONMENTAL AND ENERGY SECURITY. FE MANAGES DOE'S FOSSIL ENERGY RESEARCH AND DEVELOPMENT (FER&D) PROGRAM, WHICH INCLUDES THE CLEAN COAL POWER INITIATIVE (CCPI); CARBON CAPTURE AND STORAGE (CCS) AND POWER SYSTEMS PROGRAM; ADVANCED ENERGY SYSTEMS; THE CROSSCUTTING RESEARCH ACTIVITY; AND NATURAL GAS TECHNOLOGIES R&D PROGRAM. IN ADDITION, FE OPERATES THE STRATEGIC PETROLEUM RESERVE (SPR), THE NORTHEAST HOME HEATING OIL RESERVE, NAVAL PETROLEUM AND OIL SHALE RESERVES (NPOSR) AND ELK HILLS SCHOOL LANDS FUND. EACH OF THESE ACTIVITIES IS IN A SEPARATE APPROPRIATIONS ACCOUNT. A DESCRIPTION OF MAJOR

404

164 Characteristics of Al0.3CoCrFeNiCx High Entropy Alloys  

Science Conference Proceedings (OSTI)

... of LiMnxFe1-xPO4 Glass and Glass-Ceramics for Lithium Ion Battery .... and Comparing the Inhibition Effect of Chromate, Bromate and Molybdate on the ...

405

FE-Docket No. 99-1: Petition to intervene of Calpine Power Services Company  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

FE-Docket No. 99-1: Petition to intervene of Calpine Power Services FE-Docket No. 99-1: Petition to intervene of Calpine Power Services Company FE-Docket No. 99-1: Petition to intervene of Calpine Power Services Company Proposed open access requirement for international electric transmission facilities and delegation to the federal energy regulatory commission. Enclosed for filing are an original and fifteen copies of the petition to intervene of power service company in the above-captioned proceeding. FE-Docket No. 99-1: Petition to intervene of Calpine Power Services Company More Documents & Publications Application for Presidential Permit OE Docket No. PP-371 Northern Pass: Comments from Campton Conservation Commission Application for presidential permit OE Docket No. PP-230-4 International Transmission Company: Petition to Intervene Out of Time and Comments of

406

FE Teams Earn Secretary of Energy Achievement Awards | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

FE Teams Earn Secretary of Energy Achievement Awards FE Teams Earn Secretary of Energy Achievement Awards FE Teams Earn Secretary of Energy Achievement Awards October 4, 2012 - 1:00pm Addthis Washington, DC - Secretary of Energy Steven Chu today honored two Office of Fossil Energy (FE) groups - the National Energy Technology Laboratory's (NETL) Coronary Stents Team and the Strategic Petroleum Reserve's (SPR) 2011 Drawdown Team - with Secretary of Energy Achievement Awards for exceptional performance in carrying out the Department's mission. Small coronary stents made with a unique platinum-chromium alloy developed by NETL and Boston Scientific can open blocked arteries and save lives.The NETL team was honored for work in formulating a unique platinum-chromium alloy used for new generation coronary stents, which are used to

407

CORROSION OF Fe-10Al-Cr ALLOYS BY COAL CHAR  

E-Print Network (OSTI)

Potent.ials Encountered in Coal Conversion Systems", NASA TNof Illinois #6 ash and coal char. Figure 1. Cross sectionsof Fe-lOAl-Cr Alloys by Coal Char B. A. Gordon and V.

Gordon, B.A.

2011-01-01T23:59:59.000Z

408

The Structural Disorder and Lattice Stability of (Ba,Sr)(Co,Fe)O3 Complex Perovskites  

Science Conference Proceedings (OSTI)

The structural disorder and lattice stability of complex perovskite (Ba,Sr)(Co,Fe)O3, a promising cathode material for solid oxide fuel cells and oxygen permeation membranes, is explored by means of first principles DFT calculations. It is predicted that Ba and Sr ions easily exchange their lattice positions (A-cation disorder) similarly to Co and Fe ions (B-cation disorder). The cation antisite defects (exchange of A- and B-type cations) have a relatively high formation energy. The BSCF is predicted to exist in an equilibrium mixture of several phases and can decompose exothermically into the Ba- and Co-rich hexagonal (Ba,Sr)CoO3 and Sr- and Fe-rich cubic (Ba,Sr)FeO3 perovskites.

S.N.Rashkeev

2011-05-01T23:59:59.000Z

409

Absence of long-range chemical ordering in equimolar FeCoCrNi  

Science Conference Proceedings (OSTI)

Equimolar FeCoCrNi alloys have been the topic of recent research as 'high-entropy alloys,' where the name is derived from the high configurational entropy of mixing for a random solid solution. Despite their name, no systematic study of ordering in this alloy system has been performed to date. Here, we present results from anomalous x-ray scattering and neutron scattering on quenched and annealed samples. An alloy of FeNi{sub 3} was prepared in the same manner to act as a control. Evidence of long-range chemical ordering is clearly observed in the annealed FeNi{sub 3} sample from both experimental techniques. The FeCoCrNi sample given the same heat treatment lacks long-range chemical order.

Lucas, M. S. [Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433 (United States); UTC Inc., 1270 North Fairfield Road, Dayton, Ohio 45432 (United States); Wilks, G. B.; Senkov, O. N. [Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433 (United States); UES, Inc., 4401 Dayton-Xenia Rd., Dayton, Ohio 45432 (United States); Mauger, L.; Munoz, J. A. [California Institute of Technology, W. M. Keck Laboratory 138-78, Pasadena, California 91125 (United States); Michel, E. [Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433 (United States); Wright State University, Dayton, Ohio 45435 (United States); Horwath, J.; Semiatin, S. L. [Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433 (United States); Stone, M. B.; Abernathy, D. L. [Oak Ridge National Laboratory, 1, Bethel Valley Road, Oak Ridge, Tennessee 37831 (United States); Karapetrova, E. [Argonne National Laboratory, Argonne, Illinois 60439 (United States)

2012-06-18T23:59:59.000Z

410

Coherency Strain and the Kinetics of Phase Separation in LiFePO [subscript 4  

E-Print Network (OSTI)

A theoretical investigation of the effects of elastic coherency strain on the thermodynamics, kinetics, and morphology of intercalation in single LiFePO4 nanoparticles yields new insights into this important battery material. ...

Cogswell, Daniel A.

411

Fabrication and Characterization of Oriented Fe-Y2Ti2O7 Interfaces  

Science Conference Proceedings (OSTI)

... created by electron beam deposition of Fe on {111} Y2Ti2O7 bulk single crystal surfaces. ... Characterizing Complex Metal-oxide Interfaces via Virtual Diffraction ... Microstructurally Explicit Study of Trasport Phenomena in Uranium Oxide.

412

Impurity-Point Defect Interaction in Fe-Cr Alloys: Size Effects versus ...  

Science Conference Proceedings (OSTI)

May 1, 2007 ... Impurity-Point Defect Interaction in Fe-Cr Alloys: Size Effects versus Magnetic Behaviour by D. Nguyen-Manh, M.Y. Lavrentiev and S.L. ...

413

Clustering and Short-Range Orer in Fe-Cr Alloys: A Monte Carlo Study  

Science Conference Proceedings (OSTI)

May 1, 2007 ... Clustering and Short-Range Orer in Fe-Cr Alloys: A Monte Carlo Study by Mikhail Lavrentiev, Duc Nguyen-Manh, Sergei Dudarev, Ralf Drautz, ...

414

Intrinsic stoichiometry and oxygen-induced p-type conductivity of pyrite FeS2  

E-Print Network (OSTI)

The stoichiometry and ubiquitous observation of p-type conductivity of synthetic pyrite FeS[subscript 2] thin films are investigated via first-principles computations of native (vacancies, interstitials, antisites) and ...

Sun, Ruoshi

415

Microsoft PowerPoint - Repasky_Review_Meeting_Final_DE-FE0001858...  

NLE Websites -- All DOE Office Websites (Extended Search)

Meeting 2011 Yearly Review Meeting Project DE-FE0001858 Title: Development of a 1 x N Fiber Optic Sensor Array for Carbon Sequestration Site Monitoring Montana State University...

416

L10-FePt Media for Next-Generation Data Storage Devices  

E-Print Network (OSTI)

MgO/Fe 55 Pt 45 (no Ar milling, no Ta). The second set ofPt 45 , with substrate Ar-ion milling performed before filmdeposition (with Ar milling, no Ta). The third set of

Fernandez, Robert Anthony

2010-01-01T23:59:59.000Z

417

Effect of Cryogenic Milling on the Properties of Fe-14Cr ODS Powder  

Science Conference Proceedings (OSTI)

Generally, ODS steel is produced by high energy ball milling process in order to ... The mixture of Fe and Y2O3 powder was ball milled for 10 hours at room ...

418

Synthesis, characterization, and microwave-absorbing properties of polypyrrole/MnFe2O4 nanocomposite  

Science Conference Proceedings (OSTI)

Conductive polypyrrole (PPy)-manganese ferrite (MnFe2O4) nanocomposites with core-shell structure were synthesized by in situ polymerization in the presence of dodecyl benzene sulfonic acid (DBSA) as the surfactant and dopant and ...

Seyed Hossein Hosseini; Ahmad Asadnia

2012-01-01T23:59:59.000Z

419

Molecular dynamics simulation of displacement cascades in FeCr alloys  

E-Print Network (OSTI)

Molecular dynamics simulation of displacement cascades in Fe­Cr alloys L. Malerba a,*, D. Terentyev by displacement cascades in the relevant material. Molecular dynamics (MD) is well known to be the simulation tool

420

Brittle fracture in Nd{sub 2}Fe{sub 14}B intermetallic magnets  

Science Conference Proceedings (OSTI)

Efforts to understand and improve the fracture toughness of Nd{sub 2}Fe{sub 14}B permanent magnets require an understanding of the fracture process itself. Cleavage plane orientations in Nd{sub 2}Fe{sub 14}B were identified by X-ray diffraction and found to be rather random. Cleavage fracture surfaces often exhibited smooth curvatures with no evidence for cleavage steps. The small grain sizes of less than 100 nm in Magnequench MQ material preclude an easy assessment of the fracture mode by scanning electron microscopy. Auger electron spectroscopy showed that much of the surface is covered with a 1 nm thick layer of a neodymium-rich phase presumably the 70Nd-30Fe eutectic phase suggesting that the hard Nd{sub 2}Fe{sub 14}B grains do not cleave but instead failure is at or in the grain boundary phase.

Horton, J.A.; Heatherly, L.; Specht, E.D. [Oak Ridge National Lab., TN (United States). Metals and Ceramics Div.; Li, D.; Herchenroeder, J.W. [Magnequench International, Inc., Anderson, IN (United States); Canfield, P.C. [Ames Lab., IA (United States)]|[Iowa State Univ., Ames, IA (United States). Dept. of Physics and Astronomy

1998-02-01T23:59:59.000Z

Note: This page contains sample records for the topic "fe ru os" 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.


421

Graphene Modified LiFePO4 Cathode Materials for High Power Lithium ion Batteries  

Science Conference Proceedings (OSTI)

Graphene-modified LiFePO{sub 4} composite has been developed as a Li-ion battery cathode material with excellent high-rate capability and cycling stability. The composite was prepared with LiFePO{sub 4} nanoparticles and graphene oxide nanosheets by spray-drying and annealing processes. The LiFePO{sub 4} primary nanoparticles embedded in micro-sized spherical secondary particles were wrapped homogeneously and loosely with a graphene 3D network. Such a special nanostructure facilitated electron migration throughout the secondary particles, while the presence of abundant voids between the LiFePO{sub 4} nanoparticles and graphene sheets was beneficial for Li{sup +} diffusion. The composite cathode material could deliver a capacity of 70 mAh g{sup -1} at 60C discharge rate and showed a capacity decay rate of <15% when cycled under 10C charging and 20C discharging for 1000 times.

Zhou, X.; Wang, F.; Zhu, Y.; Liu, Z.

2011-01-24T23:59:59.000Z

422

Mechanical properties of highly oriented FeSe0.5Te0.5 superconductor  

Science Conference Proceedings (OSTI)

We have synthesized highly oriented samples of the superconducting compound FeSe0.5Te0.5 and investigated its mechanical properties. These samples were characterized by scanning electron microscopy(SEM) with energy-dispersive analysis

Jorge Luiz Pimentel Júnior; Paulo Pureur; Cristiano Santos Lopes; Francisco Carlos Serbena; Carlos Eugênio Foerster; Simone Aparecida da Silva; Alcione Roberto Jurelo; Adilson Luiz Chinelatto

2012-01-01T23:59:59.000Z

423

Pressure tuning of competing magnetic interactions in intermetallic CeFe2  

Science Conference Proceedings (OSTI)

We use high-pressure magnetic x-ray diffraction and numerical simulation to determine the low-temperature magnetic phase diagram of stoichiometric CeFe2. Near 1.5 GPa we find a transition from ferromagnetism to antiferromagnetism, accompanied by a rhombohedral distortion of the cubic Laves crystal lattice. By comparing pressure and chemical substitution we find that the phase transition is controlled by a shift of magnetic frustration from the Ce-Ce to the Fe-Fe sublattice. Notably the dominant Ce-Fe magnetic interaction, which sets the temperature scale for the onset of long-range order, remains satisfied throughout the phase diagram but does not determine the magnetic ground state. Our results illustrate the complexity of a system with multiple competing magnetic energy scales and lead to a general model for magnetism in cubic Laves phase intermetallic compounds.

Wang, Jiyang; Feng, Yejun; Jaramillo, R.; van Wezel, Jasper; Canfield, Paul C.; Rosenbaum, T.F.

2012-07-20T23:59:59.000Z

424

Single crystal growth and superconductivity of Ca(Fe1-xCox)2As2  

SciTech Connect

We report the single crystal growth of Ca(Fe1-xCox)2As2 (0 <= x <= 0.082) from Sn flux. The temperature-composition phase diagram is mapped out based on the magnetic susceptibility and electrical transport measurements. Phase diagram of Ca(Fe1-xCox)2As2 is qualitatively different from those of Sr and Ba, it could be due to both the charge doping and structural tuning effects associated with Co substitution.

Hu, Rongwei; Ran, Sheng; Budko, Serguei; Straszheim, Warren E.; Canfield, Paul C.

2012-05-18T23:59:59.000Z

425

Heat treatment of NiCrFe alloy to optimize resistance to intergrannular stress corrosion  

DOE Patents (OSTI)

A process of producing a NiCrFe alloy having a high resistance to stress corrosion cracking comprising heating a NiCrFe alloy to a temperature sufficient to enable the carbon present in the alloy body in the form of carbide deposits to enter into solution, rapidly cool the alloy body, and heat the cooled body to a temperature between 1100.degree. to 1500.degree. F. for about 1 to 30 hours.

Steeves, Arthur F. (Schenectady, NY); Bibb, Albert E. (Clifton Park, NY)

1984-01-01T23:59:59.000Z

426

Suppression of Phase Separation in LiFePO4 Nanoparticles During Battery Discharge  

E-Print Network (OSTI)

Using a novel electrochemical phase-field model, we question the common belief that LixFePO4 nanoparticles separate into Li-rich and Li-poor phases during battery discharge. For small currents, spinodal decomposition or nucleation leads to moving phase boundaries. Above a critical current density (in the Tafel regime), the spinodal disappears, and particles fill homogeneously, which may explain the superior rate capability and long cycle life of nano-LiFePO4 cathodes.

Bai, Peng; Bazant, Martin Z

2011-01-01T23:59:59.000Z

427

MAGNETO-CHEMICAL CHARACTER STUDIES OF NOVEL FE CATALYSTS FOR COAL LIQUEFACTION  

SciTech Connect

Co-precipitation is the major method proposed for synthesis of molybdenum oxide supported Fe, Fe/Co, and Fe/Cu catalysts. However, many variables may effect the particle size and surface properties of the synthesized catalysts, such as pH of molybdate solution, precipitation temperature and pH, Fe/Mo atomic ratio, pH of the washing solution, aging of the freshly prepared samples, and the length and temperature of calcination. In this period, we have been working on precipitation between iron(III) nitrate solution and ammonium para-molybdate solution under controlled pH condition, and with different Me/Fe atomic ratio. The effect of aging time on the property of the samples was also studied. The samples with the ratio of Fe/MoO{sub 3}: 6.5%, 20%, 26%, and 30% were prepared using above mentioned method. The samples with 6.5% and 26% were characterized with thermal analysis, infrared spectroscopy, magnetization, Moessbauer and X-ray diffraction before and after calcination at 400 C. FTIR was examined on precipitate, calacined and reduced samples as well as CO adsorbed and desorbed samples. Magnetization Studies were made on precipitated, calacined, and reduced samples. Their synthesis and characterization are presented in this report.

Murty A. Akundi

1997-10-01T23:59:59.000Z

428

Phase stabilization and characterization of nanocrystalline Fe-doped Cu{sub 2}O  

SciTech Connect

Oxide-based ferromagnetic semiconductors are currently being explored for spin-based electronics (Spintronics) applications. Specimens of 1 and 2% Fe-doped Cu{sub 2}O were prepared by varying the parameters of chemical co-precipitation technique. XRD analysis confirmed the cubic structure of Cu{sub 2}O. Single-phase structure was obtained for the 1% Fe-doped Cu{sub 2}O, whereas for the 2% Fe-doped Cu{sub 2}O material, secondary phases were present (either CuO or Fe{sub 3}O{sub 4}). The morphology and composition were characterized by SEM and EDAX. Measurements made by vibrating sample magnetometry (VSM) indicated paramagnetic behavior at 300 K and diamagnetic behavior at 77 K for the 1% Fe-doped Cu{sub 2}O. Diffuse reflectance (DRS) measurements indicated that a red shift in the band gap of Cu{sub 2}O occurs on doping with Fe.

Joseph, D. Paul; David, T. Premkumar; Raja, S. Philip [Materials Science Centre, Department of Nuclear Physics, University of Madras, Guindy Campus, Chennai-600 025 (India); Venkateswaran, C. [Materials Science Centre, Department of Nuclear Physics, University of Madras, Guindy Campus, Chennai-600 025 (India)], E-mail: cvunom@hotmail.com

2008-08-15T23:59:59.000Z

429

Preservation of Fe(II) by Carbon-Rich Matrices in Hydrothermal Plumes  

NLE Websites -- All DOE Office Websites (Extended Search)

Preservation of Fe(II) by Carbon-Rich Matrices in Hydrothermal Plumes Print Preservation of Fe(II) by Carbon-Rich Matrices in Hydrothermal Plumes Print Despite the considerable amount of iron that enters the oceans from the continents and from hydrothermal vents at mid-ocean ridges on the seafloor, there are large regions of the global ocean where iron availability is so low that it limits life. Oceanographers have long explained this anomaly by assuming that the iron in the sea is primarily incorporated as Fe(III) into inorganic minerals that lack both the mobility to circulate over long distance and bioavailability to sea life as an essential nutrient. Now, a collaboration led by researchers from the Woods Hole Oceanographic Institution has reported that the hydrothermal plumes emerging from the vents actually contain iron in both Fe(II) and Fe(III) oxidation states associated with organic material from nearby flora and fauna. The collaboration suggests that the organic matrices prevent oxidation and precipitation of the Fe(II), perhaps increasing both its circulation through the world's oceans and its bioavailability as a deep-sea nutrient.

430

Preservation of Fe(II) by Carbon-Rich Matrices in Hydrothermal Plumes  

NLE Websites -- All DOE Office Websites (Extended Search)

Preservation of Fe(II) by Carbon-Rich Matrices in Hydrothermal Plumes Print Preservation of Fe(II) by Carbon-Rich Matrices in Hydrothermal Plumes Print Despite the considerable amount of iron that enters the oceans from the continents and from hydrothermal vents at mid-ocean ridges on the seafloor, there are large regions of the global ocean where iron availability is so low that it limits life. Oceanographers have long explained this anomaly by assuming that the iron in the sea is primarily incorporated as Fe(III) into inorganic minerals that lack both the mobility to circulate over long distance and bioavailability to sea life as an essential nutrient. Now, a collaboration led by researchers from the Woods Hole Oceanographic Institution has reported that the hydrothermal plumes emerging from the vents actually contain iron in both Fe(II) and Fe(III) oxidation states associated with organic material from nearby flora and fauna. The collaboration suggests that the organic matrices prevent oxidation and precipitation of the Fe(II), perhaps increasing both its circulation through the world's oceans and its bioavailability as a deep-sea nutrient.

431

Optimization of LiFePO4 Nanoparticle Suspensions with Polyethyleneimine for Aqueous Processing  

SciTech Connect

Addition of dispersants to aqueous based lithium-ion battery electrode formulations containing LiFePO{sub 4} is critical to obtaining a stable suspension. The resulting colloidal suspensions enable dramatically improved coating deposition when processing electrodes. This research examines the colloidal chemistry modifications based on polyethyleneimine (PEI) addition and dispersion characterization required to produce high quality electrode formulations and coatings for LiFePO{sub 4} active cathode material. The isoelectric point, a key parameter in characterizing colloidal dispersion stability, of LiFePO{sub 4} and super P C45 were determined to be pH = 4.3 and 3.4, respectively. PEI, a cationic surfactant, was found to be an effective dispersant. It is demonstrated that 1.0 wt % and 0.5 wt % PEI were required to stabilize the LiFePO{sub 4} and super P C45 suspension, respectively. LiFePO{sub 4} cathode suspensions with 1.5 wt % PEI demonstrated the best dispersibility of all components, as evidenced by viscosity and agglomerate size of the suspensions and elemental distribution within dry cathodes. The addition of PEI significantly improved the LiFePO{sub 4} performance.

Li, Jianlin [ORNL; Armstrong, Beth L [ORNL; Kiggans, Jim [ORNL; Daniel, Claus [ORNL; Wood III, David L [ORNL

2012-01-01T23:59:59.000Z

432

Reaction-Based Reactive Transport Modeling of Fe(III) and U(V) Reduction  

SciTech Connect

Our new research project (started Fall 2004) was funded by a grant to The Pennsylvania State University, University of Central Florida, and The University of Alabama in the Integrative Studies Element of the NABIR Program (DE-FG04-ER63914/63915/63196). Our previous NABIR project (DE-FG02-01ER63180/63181/63182, funded within the Biotransformation Element) focused on (1) microbial reduction of Fe(III) and U(VI) individually, and concomitantly in natural sediments, (2) Fe(III) oxide surface chemistry, specifically with respect to reactions with Fe(II) and U(VI), (3) the influence of humic substances on Fe(III) and U(VI) bioreduction, and on U(VI) complexation, and (4) the development of reaction-based reactive transport biogeochemical models to numerically simulate our experimental results. The new project focuses on the development of a mechanistic understanding and quantitative models of coupled Fe(III)/U(VI) reduction in FRC Area 2 sediments. This work builds on our previous studies of microbial Fe(III) and U(VI) reduction, and is directly aligned with the Scheibe et al. NABIR FRC Field Project at Area 2.

Burgos, William D.; Roden, Eric E.; Yeh, Gour-Tsyh

2005-06-01T23:59:59.000Z

433

Electronic structure and vibrational entropies of fcc Au-Fe alloys  

SciTech Connect

Phonon density of states (DOS) curves were measured on alloys of face-centered-cubic (fcc) Au-Fe using nuclear resonant inelastic x-ray scattering (NRIXS) and inelastic neutron scattering (INS). The NRIXS and INS results were combined to obtain the total phonon DOS and the partial phonon DOS curves of Au and Fe atoms. The 57Fe partial phonon DOS of the dilute alloy Au0.97 57Fe0.03 shows a localized mode centered 4.3% above the cutoff energy of the phonons in pure Au. The Mannheim model for impurity modes accurately reproduced this partial phonon DOS using the fcc Au phonon DOS with a ratio of host-host to impurity-host force constants of 1.55. First-principles calculations validated the assumption of first-nearest-neighbor forces in the Mannheim model and gave a similar ratio of force constants. The high energy local mode broadens with increasing Fe composition, but this has a small effect on the composition dependence of the vibrational entropy. The main effect on the vibrational entropy of alloying comes from a stiffening of the Au partial phonon DOS with Fe concentration. This stiffening is attributed to two main effects: 1) an increase in electron density in the free-electron-like states, and 2) stronger sd-hybridization. These two effects are comparable in magnitude.

Munoz, Jorge A. [California Institute of Technology, Pasadena] [California Institute of Technology, Pasadena; Lucas, Matthew [United States Air Force Research Laboratory, Wright-Patterson Air Force Base] [United States Air Force Research Laboratory, Wright-Patterson Air Force Base; Mauger, L [California Institute of Technology, W. M. Keck Laboratory, Pasadena] [California Institute of Technology, W. M. Keck Laboratory, Pasadena; Halevy, I [California Institute of Technology, Pasadena] [California Institute of Technology, Pasadena; Horwath, J [United States Air Force Research Laboratory, Wright-Patterson Air Force Base] [United States Air Force Research Laboratory, Wright-Patterson Air Force Base; Semiatin, S L [United States Air Force Research Laboratory, Wright-Patterson Air Force Base] [United States Air Force Research Laboratory, Wright-Patterson Air Force Base; Xiao, Yuming [Carnegie Institution of Washington] [Carnegie Institution of Washington; Stone, Matthew B [ORNL] [ORNL; Abernathy, Douglas L [ORNL] [ORNL; Fultz, B. [California Institute of Technology, Pasadena] [California Institute of Technology, Pasadena

2013-01-01T23:59:59.000Z

434

A New Fe/V Redox Flow Battery Using Sulfuric/Chloric Mixed Acid Supporting Electrolyte  

SciTech Connect

A redox flow battery using Fe2+/Fe3+ and V2+/V3+ redox couples in chloric/sulphuric mixed acid supporting electrolyte was investigated for potential stationary energy storage applications. The Fe/V redox flow cell using mixed reactant solutions operated within a voltage window of 0.5-1.35 V with a nearly 100% utilization ratio and demonstrated stable cycling over 100 cycles with energy efficiency > 80% and no capacity fading at room temperature. A 25% improvement in the discharge energy density of the Fe/V cell was achieved compared with the previous reported Fe/V cell using pure chloride acid supporting electrolyte. Stable performance was also achieved in the temperature range between 0 C and 50 C as well as using microporous separator as the membrane. The improved electrochemical performance at room temperature makes the Fe/V redox flow battery a promising option as a stationary energy storage device to enable renewable integration and stabilization of the electrical grid.

Wang, Wei; Nie, Zimin; Chen, Baowei; Chen, Feng; Luo, Qingtao; Wei, Xiaoliang; Xia, Guanguang; Skyllas-Kazacos, Maria; Li, Liyu; Yang, Zhenguo

2012-04-01T23:59:59.000Z

435

Magnetic properties of (Sm,Y){sub 5}Fe{sub 17} melt-spun ribbons  

SciTech Connect

An investigation of the synthesis of the (Sm{sub 1-x}Y{sub x}){sub 5}Fe{sub 17} (x = 0 to 0.5) phase and its magnetic properties is presented. (Sm{sub 1-x}Y{sub x}){sub 5}Fe{sub 17} (x = 0 to 0.5) melt-spun ribbons that fully or mainly consisted of the amorphous phase and which showed low coercivity were prepared. Heat treatment of the melt-spun ribbons resulted in the formation of the (Sm,Y){sub 5}Fe{sub 17} phase. The highest remanence, 50 emu/g, was achieved in the annealed (Sm{sub 0.7}Y{sub 0.3}){sub 5}Fe{sub 17} melt-spun ribbon. However,the annealed (Sm{sub 1-x}Y{sub x}){sub 5}Fe{sub 17} (x = 0.4 to 0.5) melt-spun ribbons did not contain the (Sm,Y){sub 5}Fe{sub 17} phase and showed low coercivity values.

Saito, Tetsuji [Department of Mechanical Science and Engineering, Chiba Institute of Technology, 2-17-1 Tsudanuma, Narashino, Chiba 275-0016 (Japan); Nishio-Hamane, Daisuke [Institute for Solid State Physics, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8581 (Japan)

2011-04-01T23:59:59.000Z

436

Microbial Reductive Transformation of Phyllosilicate Fe(III) and U(VI) in Fluvial Subsurface Sediments  

SciTech Connect

The microbial reduction of Fe(III) and U(VI) were investigated in shallow aquifer sediments collected from subsurface Pleistocene flood deposits near the Hanford Reach of the Columbia River in Washington State. Increases in 0.5 N HCl-extractable Fe(II) were observed in incubated sediments and 57Fe Mössbauer spectroscopy revealed that Fe(III) associated with phyllosilicates and pyroxene was reduced to Fe(II). Aqueous uranium(VI) concentrations decreased in incubated Hanford sediments with the rate and extent being greater in sediment amended with organic carbon. X-ray absorption spectroscopy of bioreduced sediments indicated that 67-77% of the U signal was U(VI), probably as an adsorbed species associated with a new or modified reactive mineral phase. Phylotypes within the Deltaproteobacteria were more common in Hanford sediments incubated with U(VI) than without and in U(VI)-free incubations, members of the Clostridiales were dominant with sulfate-reducing phylotypes more common in the sulfate-amended sediments. These results demonstrate the potential for anaerobic reduction phyllosilicate Fe(III) and sulfate in Hanford unconfined aquifer sediments and biotransformations involving reduction and adsorption leading to decreased aqueous U concentrations.

Lee, Ji-Hoon; Fredrickson, Jim K.; Kukkadapu, Ravi K.; Boyanov, Maxim I.; Kemner, Kenneth M.; Lin, Xueju; Kennedy, David W.; Bjornstad, Bruce N.; Konopka, Allan; Moore, Dean A.; Resch, Charles T.; Phillips, Jerry L.

2012-04-14T23:59:59.000Z

437

Dihydroptychantol A, a macrocyclic bisbibenzyl derivative, induces autophagy and following apoptosis associated with p53 pathway in human osteosarcoma U2OS cells  

SciTech Connect

Dihydroptychantol A (DHA), a novel macrocyclic bisbibenzyl compound extracted from liverwort Asterella angusta, has antifungal and multi-drug resistance reversal properties. Here, the chemically synthesized DHA was employed to test its anti-cancer activities in human osteosarcoma U2OS cells. Our results demonstrated that DHA induced autophagy followed by apoptotic cell death accompanied with G{sub 2}/M-phase cell cycle arrest in U2OS cells. DHA-induced autophagy was morphologically characterized by the formation of double membrane-bound autophagic vacuoles recognizable at the ultrastructural level. DHA also increased the levels of LC3-II, a marker of autophagy. Surprisingly, DHA-mediated apoptotic cell death was potentiated by the autophagy inhibitor 3-methyladenine, suggesting that autophagy may play a protective role that impedes the eventual cell death. Furthermore, p53 was shown to be involved in DHA-meditated autophagy and apoptosis. In this connection, DHA increased nuclear expression of p53, induced p53 phosphorylation, and upregulated p53 target gene p21{sup Waf1/Cip1}. In contrast, cytoplasmic p53 was reduced by DHA, which contributed to the stimulation of autophagy. In relation to the cell cycle, DHA decreased the expression of cyclin B{sub 1}, a cyclin required for progression through the G{sub 2}/M phase. Taken together, DHA induces G{sub 2}/M-phase cell cycle arrest and apoptosis in U2OS cells. DHA-induced apoptosis was preceded by the induction of protective autophagy. DHA-mediated autophagy and apoptosis are associated with the cytoplasmic and nuclear functions of p53.

Li Xia [School of Pharmaceutical Sciences, Shandong University, Jinan 250012 (China); School of Ocean, Shandong University, Weihai 264209 (China); Wu, William K.K. [Institute of Digestive Diseases, LKS Institute of Health Sciences and Department of Medicine and Therapeutics, Chinese University of Hong Kong (Hong Kong); Sun Bin [School of Pharmaceutical Sciences, Shandong University, Jinan 250012 (China); Cui Min; Liu Shanshan [School of Ocean, Shandong University, Weihai 264209 (China); Gao Jian [School of Pharmaceutical Sciences, Shandong University, Jinan 250012 (China); Lou Hongxiang, E-mail: louhongxiang@sdu.edu.cn [School of Pharmaceutical Sciences, Shandong University, Jinan 250012 (China)

2011-03-01T23:59:59.000Z

438

Reductive dechlorination of chlorinated aliphatic hydrocarbons by Fe(ii) in degradative solidification/stabilization  

E-Print Network (OSTI)

This dissertation examines the applicability of the iron-based degradative solidification/stabilization (DS/S-Fe(II)) to various chlorinated aliphatic hydrocarbons (CAHs) that are common chemicals of concern at contaminated sites. The research focuses on the transformation of 1,1,1-trichloroethane (1,1,1-TCA), 1,1,2,2-tetrachloro-ethane (1,1,2,2-TetCA) and 1,2-dichloroehtane (1,2-DCA) by Fe(II) in cement slurries. It also investigates the degradation of 1,1,1-TCA by a mixture of Fe(II), cement and three iron-bearing phyllosilicates. Transformation of 1,1,1-TCA and 1,1,2,2-TetCA by Fe(II) in 10% cement slurries was characterized using batch reactors. Dechlorination kinetics of 1,1,1-TCA and TCE* (TCE that was produced by transformation of 1,1,2,2-TetCA) was strongly dependent on Fe(II) dose, pH and initial target organic concentration. Degradation of target organics in DS/S-Fe(II) process was generally described by a pseudo-first-order rate law. However, saturation relationships between the rate constants and Fe(II) dose or between the initial degradation rates and target organic concentration were observed. These behaviors were properly described by a modified Langmuir-Hinshelwood kinetic model. This supports the working hypothesis of this research that reductive dechlorination of chlorinated ethanes occurs on the surface of active solids formed in mixtures of Fe(II) and cement. Transformation products for 1,1,1-TCA and 1,1,2,2-TetCA in mixtures of Fe(II) and cement were identified. The major product of the degradation of 1,1,1-TCA was 1,1-DCA, which indicates that the reaction followed a hydrogenolysis pathway. However, a small amount of ethane was also observed. TCE* was rapidly produced by degradation of 1,1,2,2-TetCA and is expected to undergo �²-elimination to produce acetylene. Dechlorination of 1,1,1-TCA in suspension of Fe(II), cement and three soil minerals (biotite, vermiculite, montmorillonite) was characterized using batch reactors. A first-order rate model was generally used to describe the dechlorination kinetics of 1,1,1-TCA in this heterogeneous system. The rate constants for 1,1,1-TCA in mixtures of Fe(II), cement and soil minerals were influenced by soil mineral types, Fe(II) dose and the mass ratio of cement to soil mineral. It was demonstrated that structural Fe(II) and surface-bound Fe(II) in the soil minerals affect dechlorination kinetics and the effects vary with mineral types. Furthermore, it suggests that the reductant formed from Fe(II) and cement hydration components is also effective in systems that include soil minerals.

Jung, Bahng Mi

2005-12-01T23:59:59.000Z

439

Tailoring Fe-Base Alloys for Intermediate Temperature SOFC Interconnect Application  

DOE Green Energy (OSTI)

This report summarized the research efforts and major conclusions for our SECA Phase I and II project focused on Cr-free or low Cr Fe-Ni based alloy development for intermediate temperature solid oxide fuel cell (SOFC) interconnect application. Electrical conductivity measurement on bulk (Fe,Ni){sub 3}O{sub 4} coupons indicated that this spinel phase possessed a higher electrical conductivity than Cr{sub 1.5}Mn{sub 1.5}O{sub 4} spinel and Cr{sub 2}O{sub 3}, which was consistent with the low area specific resistance (ASR) of the oxide scale formed on these Fe-Ni based alloys. For Cr-free Fe-Ni binary alloys, although the increase in Ni content in the alloys improved the oxidation resistance, and the Fe-Ni binary alloys exhibited adequate CTE and oxide scale ASR, their oxidation resistance needs to be further improved. Systematic alloy design efforts have led to the identification of one low-Cr (6wt.%) Fe-Ni-Co based alloy which formed a protective, electrically-conductive Cr{sub 2}O{sub 3} inner layer underneath a Cr-free, highly conductive spinel outer layer. This low-Cr, Fe-Ni-Co alloy has demonstrated a good CTE match with other cell components; high oxidation resistance comparable to that of Crofer; low oxide scale ASR with the formation of electrically-insulating phases in the oxide scale; no scale spallation during thermal cycling; adequate compatibility with cathode materials; and comparable mechanical properties with Crofer. The existence of the Cr-free (Fe,Co,Ni){sub 3}O{sub 4} outer layer effectively reduced the Cr evaporation and in transpiration testing resulted in a 6-fold decrease in Cr evaporation as compared to a state-of-the-art ferritic interconnect alloy. In-cell testing using an anode supported cell with a configuration of Alloy/Pt/LSM/YSZ/Ni+YSZ indicates that the formation of the Cr-free spinel layer via thermal oxidation was effective in blocking the Cr migration and thus improving the cell performance stability. Electroplating of the Fe-Ni-Co alloys as precursor to synthesize a protective spinel layer on commercial ferritic steels has been initiated to facilitate the utilization of the Cr-free spinel as a surface seal to block Cr evaporation. It is suggested that low-cost Fe-Ni-Co alloy coating on commercial ferritic steels might be the best approach to completely eliminate the Cr poisoning problem in SOFC stacks, while maintaining the relatively low overall cost of the interconnect component.

J.H. Zhu; M.P. Brady; H.U. Anderson

2007-12-31T23:59:59.000Z

440

Data:E471fe65-077f-4bee-b8a8-ae0e946770fe | Open Energy Information  

Open Energy Info (EERE)

fe65-077f-4bee-b8a8-ae0e946770fe fe65-077f-4bee-b8a8-ae0e946770fe No revision has been approved for this page. It is currently under review by our subject matter experts. Jump to: navigation, search Loading... 1. Basic Information 2. Demand 3. Energy << Previous 1 2 3 Next >> Basic Information Utility name: Pontotoc Electric Power Assn Effective date: 2013/07/01 End date if known: Rate name: Security Light HPS 100 W 40' pole Sector: Lighting Description: Source or reference: http://www.sitemason.com/files/fjDo1q/May%202012.pdf Source Parent: Comments Applicability Demand (kW) Minimum (kW): Maximum (kW): History (months): Energy (kWh) Minimum (kWh): Maximum (kWh): History (months): Service Voltage Minimum (V): Maximum (V): Character of Service Voltage Category: Phase Wiring: << Previous 1 2 3

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441

Data:B400dafc-8277-4c64-b21b-887fe880a1fe | Open Energy Information  

Open Energy Info (EERE)

dafc-8277-4c64-b21b-887fe880a1fe dafc-8277-4c64-b21b-887fe880a1fe No revision has been approved for this page. It is currently under review by our subject matter experts. Jump to: navigation, search Loading... 1. Basic Information 2. Demand 3. Energy << Previous 1 2 3 Next >> Basic Information Utility name: City of Elkhorn, Wisconsin (Utility Company) Effective date: 2012/07/01 End date if known: Rate name: Cp-1TOD; Small Power Optional Time-of-Day Service-Transformer Ownership Discount and Primary Metering Discount-20kW or less-Net Energy Billing) Sector: Commercial Description: This rate schedule is optional to all Cp-1 customers. Customers that wish to be served on this rate schedule must apply to the utility for service. Once an optional customer begins service on this rate schedule, the customer shall remain on the rate for a minimum of one year. Any customer choosing to be served on this rate schedule waives all rights to billing adjustments arising from a claim that the bill for service would be less on another rate schedule than under this rate schedule.

442

Data:E44a8d9f-e0fe-4a81-a139-8493f21d7229 | Open Energy Information  

Open Energy Info (EERE)

d9f-e0fe-4a81-a139-8493f21d7229 d9f-e0fe-4a81-a139-8493f21d7229 No revision has been approved for this page. It is currently under review by our subject matter experts. Jump to: navigation, search Loading... 1. Basic Information 2. Demand 3. Energy << Previous 1 2 3 Next >> Basic Information Utility name: Flint Electric Membership Corp Effective date: 2007/04/01 End date if known: Rate name: Outdoor Lighting GUS Shoebox HPS 1000 W Sector: Lighting Description: POLE CHARGES Type, Charge 30' Wood $205.00 35' Wood $220.00 16' Aluminum (Brushed) $250.00 16' Fiberglass (Black) $300.00 16' Fiberglass (Acorn, Black) $800.00 30' Steel & Sub Base $1325.00 30' Fiberglass with 6' Arm $625.00 30' Fiberglass with 2 - 6' Arm $725.00 Source or reference: http://www.flintenergies.com/myHome/residentialRates/covenantStreetLighting.aspx

443

Data:916c47bc-b7fe-42e1-b7e2-7660fe4dd49b | Open Energy Information  

Open Energy Info (EERE)

c47bc-b7fe-42e1-b7e2-7660fe4dd49b c47bc-b7fe-42e1-b7e2-7660fe4dd49b No revision has been approved for this page. It is currently under review by our subject matter experts. Jump to: navigation, search Loading... 1. Basic Information 2. Demand 3. Energy << Previous 1 2 3 Next >> Basic Information Utility name: City of Marshfield, Wisconsin (Utility Company) Effective date: 2012/02/01 End date if known: Rate name: Cp-1 Small Power Service between 50kW and 200kW Demand Primary Metering Discount Sector: Industrial Description: Power Cost Adjustment Clause - All metered rates shall be subject to a positive or negative power cost adjustment charge equivalent to the amount by which the current cost of power (per kilowatt-hour of sales) is greater or lesser than the base cost of power purchased (per kilowatt-hour of sales). The base cost of power (U) is $0.0515 per kilowatt-hour.

444

Data:33db466d-20e7-4d4c-8fe8-57fe6694f5fd | Open Energy Information  

Open Energy Info (EERE)

db466d-20e7-4d4c-8fe8-57fe6694f5fd db466d-20e7-4d4c-8fe8-57fe6694f5fd No revision has been approved for this page. It is currently under review by our subject matter experts. Jump to: navigation, search Loading... 1. Basic Information 2. Demand 3. Energy << Previous 1 2 3 Next >> Basic Information Utility name: Kenergy Corp Effective date: 2011/09/01 End date if known: Rate name: Fuel Adjustment Rider Sector: Description: APPLICABLE In all territory served. FUEL ADJUSTMENT RATE SECTION 1 BILLINGS TO CUSTOMERS SERVED FROM NON-DEDICATED DELIVERY POINTS Billings computed pursuant to rate schedules to which this section is applicable shall be adjusted based on the following formula where all references to costs and revenues will exclude amounts associated with customers served from Dedicated Delivery Points. The fuel adjustment rate applicable to KWH sold in the current month under each rate to which this section applies shall be based upon the fallowing formula: F= ((WFAC-O+U)/(P(m) x L)) - F(b)

445

Data:F77ed989-582c-4fe5-8fe9-fb07a47b1ee4 | Open Energy Information  

Open Energy Info (EERE)

89-582c-4fe5-8fe9-fb07a47b1ee4 89-582c-4fe5-8fe9-fb07a47b1ee4 No revision has been approved for this page. It is currently under review by our subject matter experts. Jump to: navigation, search Loading... 1. Basic Information 2. Demand 3. Energy << Previous 1 2 3 Next >> Basic Information Utility name: City of Bountiful, Utah (Utility Company) Effective date: 2011/07/01 End date if known: Rate name: Residential-Beacon light fee, per lamp, per month Sector: Lighting Description: This schedule is for services and products rendered to Customers by BCLP. Source or reference: http://www.bountifulutah.gov/WorkArea/showcontent.aspx?id=6138 Source Parent: Comments Applicability Demand (kW) Minimum (kW): Maximum (kW): History (months): Energy (kWh) Minimum (kWh): Maximum (kWh): History (months):

446

Data:6e1a44be-83a1-4d87-9fe5-fe4db372e495 | Open Energy Information  

Open Energy Info (EERE)

a44be-83a1-4d87-9fe5-fe4db372e495 a44be-83a1-4d87-9fe5-fe4db372e495 No revision has been approved for this page. It is currently under review by our subject matter experts. Jump to: navigation, search Loading... 1. Basic Information 2. Demand 3. Energy << Previous 1 2 3 Next >> Basic Information Utility name: Salt River Electric Coop Corp Effective date: 2011/06/01 End date if known: Rate name: Large Power 500 kW - 999 kW Sector: Industrial Description: Source or reference: www.srelectric.com Source Parent: Comments Applicability Demand (kW) Minimum (kW): Maximum (kW): History (months): Energy (kWh) Minimum (kWh): Maximum (kWh): History (months): Service Voltage Minimum (V): Maximum (V): Character of Service Voltage Category: Phase Wiring: << Previous 1 2 3 Next >> << Previous 1 2 3 Next >>

447

A First-principles Study onA First-principles Study on Fe Substituted CrFe Substituted Cr2323CC66  

E-Print Network (OSTI)

halpy of FeCr22C6. #12;Creep Resistant Steel Steam Power Plant Efficiency ~42 % Goal Efficiency 45 common power plant steels (MTDAT A, SGTE database, 565 °C) [Bhadeshia, 2001] M23C6 in Power Plant Steels by the all-electron full potential linearized a ugmented plane-wave method (FLAPW) within the generalized g

Cambridge, University of

448

Proceedings of the joint contractors meeting: FE/EE Advanced Turbine Systems conference FE fuel cells and coal-fired heat engines conference  

SciTech Connect

The joint contractors meeting: FE/EE Advanced Turbine Systems conference FEE fuel cells and coal-fired heat engines conference; was sponsored by the US Department of Energy Office of Fossil Energy and held at the Morgantown Energy Technology Center, P.O. Box 880, Morgantown, West Virginia 26507-0880, August 3--5, 1993. Individual papers have been entered separately.

Geiling, D.W. [ed.

1993-08-01T23:59:59.000Z

449

Data:F8baf3fe-77ac-4e88-81fe-07693c8def83 | Open Energy Information  

Open Energy Info (EERE)

baf3fe-77ac-4e88-81fe-07693c8def83 baf3fe-77ac-4e88-81fe-07693c8def83 No revision has been approved for this page. It is currently under review by our subject matter experts. Jump to: navigation, search Loading... 1. Basic Information 2. Demand 3. Energy << Previous 1 2 3 Next >> Basic Information Utility name: Indiana Michigan Power Co (Michigan) Effective date: 2013/04/01 End date if known: Rate name: COGEN/SPP - Cogeneration and/or Small Power Production Service Sector: Description: Monthly Charges for Delivery from the Company to the Customer (1) Supplemental Service Available to the customer to supplement its COGEN/SPP source of power supply which will enable either or both sources of supply to be utilized for all or any part of the customer's total requirements. Charges for energy, and demand where applicable, to serve the customer's net or total load shall be determined according to the rate schedule appropriate for the customer. Option 1 and Option 2 customers with COGEN/SPP facilities having a total design capacity of more than 10 kW shall be served under demand-metered rate schedules.

450

Phase Diagram of KxFe2-ySe2-zSz and the Suppression of its Superconducting State by an Fe2-Se=S Tetrahedron Distortion  

Science Conference Proceedings (OSTI)

We report structurally tuned superconductivity in a K{sub x}Fe{sub 2-y}Se{sub 2-z}S{sub z} (0 {le} z {le} 2) phase diagram. Superconducting T{sub c} is suppressed as S is incorporated into the lattice, eventually vanishing at 80% of S. The magnetic and conductivity properties can be related to stoichiometry on a poorly occupied Fe1 site and the local environment of a nearly fully occupied Fe2 site. The decreasing T{sub c} coincides with the increasing Fe1 occupancy and the overall increase in Fe stoichiometry from z = 0 to z = 2. Our results indicate that the irregularity of the Fe2-Se/S tetrahedron is an important controlling parameter that can be used to tune the ground state in the new superconductor family.

Lei H.; Abeykoon, M.; Bozin, E.S.; Wang, K.; Warren, J.B.; Petrovic, C.

2011-09-19T23:59:59.000Z

451

Phase Diagram of KxFe2-ySe2-zSz and the Suppression of its Superconducting State by an Fe2-Se/S Tetrahedron Distortion  

SciTech Connect

We report structurally tuned superconductivity in a K{sub x}Fe{sub 2-y}Se{sub 2-z}S{sub z} (0 {le} z {le} 2) phase diagram. Superconducting T{sub c} is suppressed as S is incorporated into the lattice, eventually vanishing at 80% of S. The magnetic and conductivity properties can be related to stoichiometry on a poorly occupied Fe1 site and the local environment of a nearly fully occupied Fe2 site. The decreasing T{sub c} coincides with the increasing Fe1 occupancy and the overall increase in Fe stoichiometry from z = 0 to z = 2. Our results indicate that the irregularity of the Fe2-Se/S tetrahedron is an important controlling parameter that can be used to tune the ground state in the new superconductor family.

H Lei; M Abeykoon; E Bozin; K Wang; J Warren; C Petrovic

2011-12-31T23:59:59.000Z

452

Corrosion Behavior of NiCrFe Alloy 600 in High Temperature, Hydrogenated Water  

SciTech Connect

The corrosion behavior of Alloy 600 (UNS N06600) is investigated in hydrogenated water at 260 C. The corrosion kinetics are observed to be parabolic, the parabolic rate constant being determined by chemical descaling to be 0.055 mg dm{sup -2} hr{sup -1/2}. A combination of scanning and transmission electron microscopy, supplemented by energy dispersive X-ray spectroscopy and grazing incidence X-ray diffraction, are used to identify the oxide phases present (i.e., spinel) and to characterize their morphology and thickness. Two oxide layers are identified: an outer, ferrite-rich layer and an inner, chromite-rich layer. X-ray photoelectron spectroscopy with argon ion milling and target factor analysis is applied to determine spinel stoichiometry; the inner layer is (Ni{sub 0.7}Fe{sub 0.3})(Fe{sub 0.3}Cr{sub 0.7}){sub 2}O{sub 4}, while the outer layer is (Ni{sub 0.9}Fe{sub 0.1})(Fe{sub 0.85}Cr{sub 0.15}){sub 2}O{sub 4}. The distribution of trivalent iron and chromium cations in the inner and outer oxide layers is essentially the same as that found previously in stainless steel corrosion oxides, thus confirming their invariant nature as solvi in the immiscible spinel binary Fe{sub 3}O{sub 4}-FeCr{sub 2}O{sub 4} (or NiFe{sub 2}O{sub 4}-NiCr{sub 2}O{sub 4}). Although oxidation occurred non-selectively, excess quantities of nickel(II) oxide were not found. Instead, the excess nickel was accounted for as recrystallized nickel metal in the inner layer, as additional nickel ferrite in the outer layer, formed by pickup of iron ions from the aqueous phase, and by selective release to the aqueous phase.

SE Ziemniak; ME Hanson

2004-11-02T23:59:59.000Z

453

Stripe-to-bubble transition of magnetic domains at the spin reorientation of (Fe/Ni)/Cu/Ni/Cu(001)  

Science Conference Proceedings (OSTI)

Magnetic domain evolution at the spin reorientation transition (SRT) of (Fe/Ni)/Cu/Ni/Cu(001) is investigated using photoemission electron microscopy. While the (Fe/Ni) layer exhibits the SRT, the interlayer coupling of the perpendicularly magnetized Ni layer to the (Fe/Ni) layer serves as a virtual perpendicular magnetic field exerted on the (Fe/Ni) layer. We find that the perpendicular virtual magnetic field breaks the up-down symmetry of the (Fe/Ni) stripe domains to induce a net magnetization in the normal direction of the film. Moreover, as the virtual magnetic field increases to exceed a critical field, the stripe domain phase evolves into a bubble domain phase. Although the critical field depends on the Fe film thickness, we show that the area fraction of the minority domain exhibits a universal value that determines the stripe-to-bubble phase transition.

Wu, J.; Choi, J.; Won, C.; Wu, Y. Z.; Scholl, A.; Doran, A.; Hwang, Chanyong; Qiu, Z.

2010-06-09T23:59:59.000Z

454

p-type conduction induced by N-doping in {alpha}-Fe{sub 2}O{sub 3}  

Science Conference Proceedings (OSTI)

A p-type N-doped {alpha}-Fe{sub 2}O{sub 3} was developed by magnetron sputtering of a Fe{sub 2}O{sub 3} target in a plasma containing N{sub 2} and Ar followed by postannealing. Photoelectrochemical measurement under visible light irradiation (>410 nm) showed that N-Fe{sub 2}O{sub 3} exhibits a typical cathodic photocurrent originated from the p-type conduction. X-ray photoemission spectroscopy indicated that the atomic N incorporated substitutionally at O sites was responsible for the p-type conduction. The concentration of acceptors was very close to that for Zn-doped Fe{sub 2}O{sub 3}, a typical p-type {alpha}-Fe{sub 2}O{sub 3}. This finding would stimulate further research on p-type Fe{sub 2}O{sub 3} for solar fuel generation, etc.

Morikawa, Takeshi; Kitazumi, Kousuke; Takahashi, Naoko; Arai, Takeo; Kajino, Tsutomu [Toyota Central Research and Development Laboratories, Inc., Nagakute, Aichi 480-1192 (Japan)

2011-06-13T23:59:59.000Z

455

Purification and Characterization of [NiFe]-Hydrogenase of Shewanella oneidensis MR-1  

SciTech Connect

The ?-proteobacterium Shewanella oneidensis MR-1 possesses a periplasmic [NiFe]-hydrogenase (MR-1 [NiFe]-H2ase) that was implicated in both H2 production and oxidation as well as technetium [Tc(VII)] reduction. To characterize the roles of MR-1 [NiFe]-H2ase in these proposed reactions, the genes encoding both subunits of MR-1 [NiFe]-H2ase were cloned into a protein expression vector. The resulting plasmid was transformed into a MR-1 mutant deficient in H2 formation. Expression of MR-1 [NiFe]-H2ase in trans restored the mutant’s ability to produce H2 at 37% of that for wild type. Following expression, MR-1 [NiFe]-H2ase was purified to near homogeneity. The purified MR-1 [NiFe]-H2ase could couple H2 oxidation to reduction of Tc(VII) and methyl viologen directly. Change of the buffers used affected MR-1 [NiFe]-H2ase-mediated Tc(VII) but not methyl viologen reductions. Under the conditions tested, Tc(VII) reduction was complete in Tris buffer but not in HEPES buffer. The reduced Tc(IV) was soluble in Tris buffer but insoluble in HEPES buffer. Transmission electron microscopy analysis revealed that Tc(IV) precipitates formed in HEPES buffer were packed with crystallites. Although X-ray absorption near-edge spectroscopy measurements confirmed that the reduction products found in both buffers were Tc(IV), extended X-ray adsorption fine-structure measurements revealed that these products were very different. While the product in Tris buffer could not be determined, the Tc(IV) product in HEPES buffer was very similar to Tc(IV)O2•nH2O. These results shows for the first time that MR-1 [NiFe]-H2ase is a bidirectional enzyme that catalyzes both H2 formation and oxidation as well as Tc(VII) reduction directly by coupling H2 oxidation.

Shi, Liang; Belchik, Sara M.; Plymale, Andrew E.; Heald, Steve M.; Dohnalkova, Alice; Sybirna, Kateryna; Bottin, Herve; Squier, Thomas C.; Zachara, John M.; Fredrickson, Jim K.

2011-08-02T23:59:59.000Z

456

Immobilization of 99-Technetium (VII) by Fe(II)-Goethite and Limited Reoxidation  

Science Conference Proceedings (OSTI)

Synthesized goethite was successfully used with addition of Fe(II) to sequester Tc present in both deionized water and simulated off-gas scrubber waste solutions. Pertechnetate concentration in solution decreased immediately when the pH was raised above 7 by addition of sodium hydroxide. Removal of Tc(VII) from solution occurred most likely as a result of heterogeneous surface-catalyzed reduction to Tc(IV) and subsequent co-precipitation onto the goethite. The final Tc-bearing solid was identified as goethite-dominated Fe(III)-(oxy)hydroxide based on XRD analysis, confirming the widespread observation of its characteristic acicular habit by TEM/SEM images. Analysis of the solid precipitate by XAFS showed that the dominant oxidation state of Tc was Tc(IV) and was in octahedral coordination with Tc-O, Fe-O, and Tc-Fe bond distances that are consistent with direct substitution of Tc for Fe in the goethite structure. In some experiments the final Tc-goethite product was subsequently armored with additional layers of freshly precipitated goethite. Successful incorporation of Tc(IV) within the goethite mineral lattice and subsequent goethite armoring can limit re-oxidation of Tc(IV) and its subsequent release from Tc-goethite waste forms, even when the final product is placed in oxidizing environments that typify shallow waste burial facilities.

Um, Wooyong; Chang, Hyun-Shik; Icenhower, Jonathan P.; Lukens, Wayne W.; Serne, R. Jeffrey; Qafoku, Nikolla; Westsik, Joseph H.; Buck, Edgar C.; Steven, Smith C.

2011-05-04T23:59:59.000Z

457

Stability of uranium incorporated into Fe(hydr)oxides under fluctuating redox conditions  

SciTech Connect

Reaction pathways resulting in uranium bearing solids that are stable (i.e., having limited solubility) under both aerobic and anaerobic conditions will limit dissolved concentrations and migration of this toxin. Here we examine the sorption mechanism and propensity for release of uranium reacted with Fe (hydr)oxides under cyclic oxidizing and reducing conditions. Upon reaction of ferrihydrite with Fe(II) under conditions where aqueous Ca-UO{sub 2}-CO{sub 3} species predominate (3 mM Ca and 3.8 mM CO{sub 3}-total), dissolved uranium concentrations decrease from 0.16 mM to below detection limit (BDL) after 5 to 15 d, depending on the Fe(II) concentration. In systems undergoing 3 successive redox cycles (15 d of reduction followed by 5 d of oxidation) and a pulsed decrease to 0.15 mM CO{sub 3}-total, dissolved uranium concentrations varied depending on the Fe(II) concentration during the initial and subsequent reduction phases - U concentrations resulting during the oxic 'rebound' varied inversely with the Fe(II) concentration during the reduction cycle. Uranium removed from solution remains in the oxidized form and is found both adsorbed on and incorporated into the structure of newly formed goethite and magnetite. Our 15 results reveal that the fate of uranium is dependent on anaerobic/aerobic conditions, aqueous uranium speciation, and the fate of iron.

Stewart, B.D.; Nico, P.S.; Fendorf, S.

2009-04-01T23:59:59.000Z

458

On Deep-Ocean Fe-60 as a Fossil of a Near-Earth Supernova  

E-Print Network (OSTI)

Live $^{60}$Fe has recently been reported in a deep-ocean ferromanganese crust. Analysis of the isotopic ratios in the sample suggests that the measured $^{60}$Fe abundance exceeds the levels generated by terrestrial and cosmogenic sources, and it has been proposed that the excess of $^{60}$Fe is a signature of a supernova that exploded near the earth several Myr ago. In this paper, we consider the possible background sources, and confirm that the measured $^{60}$Fe is significantly higher than all known backgrounds, in contrast with the reported abundance of live $^{53}$Mn. We discuss scenarios in which the data are consistent with a supernova event at a distance $D \\sim 30$ pc and an epoch $t_{\\rm SN} \\sim 5$ Myr ago. We propose tests that could confirm or refute the interpretation of the $^{60}$Fe discovery, including searches for $^{10}$Be, $^{129}$I and $^{146}$Sm. Such a nearby supernova event might have had some impact on the earth's biosphere, principally by enhancing the cosmic-ray flux. This might have damaged the earth's ozone layer, enhancing the penetration of solar ultraviolet radiation. In this connection, we comment on the Middle Miocene and Pliocene mini-extinction events. We also speculate on the possibility of a supernova-induced "cosmic-ray winter," if cosmic rays play a significant role in seeding cloud formation.

Brian D. Fields; John Ellis

1998-11-29T23:59:59.000Z

459

Fe/Si(001) Ferromagnetic Layers: Reactivity, Local Atomic Structure and Magnetism  

SciTech Connect

Ultrathin ferromagnetic Fe layers on Si(001) have recently been synthesized using the molecular beam epitaxy (MBE) technique, and their structural and magnetic properties, as well as their interface reactivity have been investigated. The study was undertaken as function of the amount of Fe deposited and of substrate temperature. The interface reactivity was characterized by Auger electron spectroscopy (AES). The surface structure was characterized by low-energy electron diffraction (LEED). The magnetism was investigated by magneto-optical Kerr effect (MOKE). A higher deposition temperature stabilizes a better surface ordering, but it also enhances Fe and Si interdiffusion and it therefore decreases the magnetism. Despite the rapid disappearance of the long range order with Fe deposition at room temperature, the material exhibits a significant uniaxial in-plane magnetic anisotropy. For the Fe deposition performed at high temperature (500 deg. C), a weak ferromagnetism is still observed, with saturation magnetization of about 10% of the value obtained previously. MOKE studies allowed inferring the main properties of the distinct formed layers.

Lungu, G. A.; Costescu, R. M.; Husanu, M. A.; Gheorghe, N. G. [National Institute of Materials Physics, Atomistilor 105bis, 077125 Magurele-Ilfov (Romania)

2011-10-03T23:59:59.000Z

460

Development of a new graded-porosity FeAl alloy by elemental reactive synthesis  

SciTech Connect

A new graded-porosity FeAl alloy can be fabricated through Fe and Al elemental reactive synthesis. FeAl alloy w