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1

Structure and properties of bimetallic Ru-Fe/Al/sub 2/O/sub 3/ catalysts  

SciTech Connect

The authors studied the influence of the composition of Ru-Fe-/Al/sub 2/O/sub 3/-catalysts on adsorption and interaction of carbon monoxide and hydrogen. Moessbauer investigations were conducted. According to x-ray photoelectron spectra (XPS) bimetallic Ru-Fe/Al/sub 2/O/sub 3/ catalysts contain ruthenium mainly in the form of Ru/sup 0/ (E/sub b/ = 280.8 eV). Adsorption of carbon monoxide, hydrogen, and CO + H/sub 2/ mixture was studied by microcalorimetric and thermal-desorption methods.

Zakumbaeva, G.D.; Shapovalova, L.B.; Omarov, Zh.T.; Kuanyshev, A.Sh.; Yaskevich, V.I.

1988-08-20T23:59:59.000Z

2

Tuning the magnetic and structural phase transitions of PrFeAsO via Fe/Ru spin dilution  

SciTech Connect

Neutron diffraction and muon spin relaxation measurements are used to obtain a detailed phase diagram of PrFe1{xRuxAsO. The isoelectronic substitution of Ru for Fe acts eectively as spin dilution, suppressing both the structural and magnetic phase transitions. The temperature, TS, of the tetragonal-orthorhombic structural phase transition decreases gradually as a function of x. Slightly below TS coherent precessions of the muon spin are observed corresponding to static magnetism, possibly re ecting a signicant magneto-elastic coupling in the FeAs layers. Short range order in both the Fe and Pr moments persists for higher levels of x. The static magnetic moments disappear at a concentration coincident with that expected for percolation of the J1 - J2 square lattice model.

Yiu, Yuen [ORNL; Bonfa, Pietro [University of Parma, Italy; Sanna, Samuele [Universita di Pavia, Italy; De Renzi, Roberto [University of Parma, Italy; Caretta, Pietro [Universita di Pavia, Italy; McGuire, Michael A [ORNL; Huq, Ashfia [ORNL; Nagler, Stephen E [ORNL

2014-01-01T23:59:59.000Z

3

Ordered vs. disordered perovskites; structural studies of Fe-doped SrIrO{sub 3} and SrRuO{sub 3}  

SciTech Connect

The structures of the two Fe containing perovskites Sr{sub 2}IrFeO{sub 6} and SrRu{sub 0.5}Fe{sub 0.5}O{sub 3} have been established using a combination of synchrotron and neutron diffraction methods. Sr{sub 2}IrFeO{sub 6} and SrRu{sub 0.5}Fe{sub 0.5}O{sub 3} are shown to be monoclinic I2/m and tetragonal I4/mcm respectively The former exhibits a rock-salt like ordering of the Fe and Ir cations and displays a sequence of phase transitions associated with the loss of the octahedral tilts upon heating; 12/m?I4/m?Fm3{sup ¯}m. The Fe and Ru cations are disordered in SrRu{sub 0.5}Fe{sub 0.5}O{sub 3} and this shows a single structural phase transition upon heating due to the loss of the in-phase tilts, viz. I4/mcm?Pm3{sup ¯}m. In both cases XANES measurements show partial oxidation of the Fe{sup 3+} to Fe{sup 4+}. The difference in the structures between the two is remarkable given the similar size of Ir{sup 5+} and Ru{sup 5+}, and this is reflected in their magnetic properties. - Graphical abstract: Sr{sub 2}IrFeO{sub 6} and SrRu{sub 0.5}Fe{sub 0.5}O{sub 3} are shown, using a combination of synchrotron and neutron diffraction, to be monoclinic I2/m with cation ordering and tetragonal I4/mcm with disordered Fe and Ir, respectively. Both undergo phase transitions upon heating due to the loss of the octahedral tilts. Display Omitted - Highlights: • Sr{sub 2}IrFeO{sub 6} shown to be monoclinic and shows the transitions upon heating I2/m?I4/m? Fm3{sup ¯}m. • SrRu{sub 0.5}Fe{sub 0.5}O{sub 3} is tetragonal and shows a single I4/mcm?Pm3m transition upon heating. • The Fe and Ru cations are disordered in SrRu{sub 0.5}Fe{sub 0.5}O{sub 3} but ordered in Sr{sub 2}FeIrO{sub 6}. • XANES measurements show partial oxidation of the Fe{sup 3+} to Fe{sup 4+}.

Qasim, Ilyas; Blanchard, Peter E.R.; Liu, Samuel; Tang, Chunguang [School of Chemistry, The University of Sydney, Sydney, NSW 2006 (Australia); Kennedy, Brendan J., E-mail: B.Kennedy@chem.usyd.edu.au [School of Chemistry, The University of Sydney, Sydney, NSW 2006 (Australia); Avdeev, Maxim [Australian Nuclear Science and Technology Organisation, Lucas Heights, NSW 2234 (Australia); Kimpton, Justin A. [Australian Synchrotron, 800 Blackburn Road, Clayton, Victoria 3168 (Australia)

2013-10-15T23:59:59.000Z

4

Commensurate-incommensurate magnetic phase transition in the Fe-doped bilayer ruthenate Ca3Ru2O7  

Science Journals Connector (OSTI)

Neutron diffraction studies have revealed an uncommon commensurate-incommensurate magnetic phase transition with decreasing temperature in the (?5%) Fe-doped bilayer ruthenate Ca3(Ru,Fe)2O7. An incommensurate phase formed of a cycloidal spiral spin structure coexists with a commensurate one below the phase transition at 42 K and persists down to the lowest temperature, accompanied by higher-order magnetic satellite peaks which indicate the formation of a magnetic soliton lattice. We ascribe these findings to the competing magnetic interactions in this system. This study demonstrates an effective approach to tune novel magnetic and electronic properties of ruthenates via 3d magnetic transition-metal substitution.

X. Ke; J. Peng; W. Tian; Tao Hong; M. Zhu; Z. Q. Mao

2014-06-23T23:59:59.000Z

5

Temperature-dependent magnetic Compton scattering study of spin moments in Ce(Fe0.94Ru0.06)2  

Science Journals Connector (OSTI)

We report on the study of spin moments in Ce(Fe0.94Ru0.06)2 using magnetic Compton scattering. The measurements on polycrystalline sample were carried out at SPring-8, Japan with 175 keV elliptically polarized synchrotron radiation at 70, 90, 120, 150, and 190 K in 2 T field. The temperature variation of the magnetic effect exhibits clearly the double magnetic transition, i.e., from antiferromagnetic to ferromagnetic and ferromagnetic to paramagnetic transition in agreement with the resistivity and magnetization studies on this material. A comparison of temperature-dependent spin moments in the present sample with Ce(Fe0.96Ru0.04)2 shows interesting features of spin momentum density.

B. K. Sharma; V. Purvia; B. L. Ahuja; M. Sharma; P. Chaddah; S. B. Roy; Y. Kakutani; A. Koizumi; T. Nagao; A. Omura; T. Kawai; N. Sakai

2005-10-10T23:59:59.000Z

6

Magnetic and orbital orders coupled to negative thermal expansion in Mott insulators Ca2Ru1?xMxO4 (M = Mn and Fe)  

Science Journals Connector (OSTI)

Ca2RuO4 is a structurally driven Mott insulator with a metal-insulator transition at TMI = 357K, followed by a well-separated antiferromagnetic order at TN = 110 K. Slightly substituting Ru with a 3d transition metal ion M effectively shifts TMI by weakening the orthorhombic distortion and induces either metamagnetism or magnetization reversal below TN. Moreover, M doping for Ru produces negative thermal expansion in Ca2Ru1?xMxO4 (M = Cr, Mn, Fe, or Cu); the lattice volume expands on cooling with a total volume expansion ratio, ?V/V, reaching as high as 1%. The onset of the negative thermal expansion closely tracks TMI and TN, sharply contrasting classic negative thermal expansion that shows no relevance to electronic properties. In addition, the observed negative thermal expansion occurs near room temperature and extends over a wide temperature interval up to 300 K. These findings underscore new physics driven by a complex interplay between orbital, spin, and lattice degrees of freedom.

T. F. Qi, O. B. Korneta, S. Parkin, Jiangping Hu, and G. Cao

2012-04-26T23:59:59.000Z

7

Dpon ru Paean 3  

E-Print Network (OSTI)

??????????? Tape No. / Track / Item No. Dpon ru Paean 3.WAV Length of track 00:03:15 Related tracks (include description/relationship if appropriate) Title of track The Sun Rises From Up There ???????? ?????????????????????????? Translation of title... Description (to be used in archive entry) The lyrics say, "The sun rising above the mountaintop is not the sun, it is the lama. The moon rising over the mid-slopes of the mountain is not the moon, it is the leader. The stars sparkling at the foot...

Gcod pa don 'grub

8

Quasielastic neutron scattering of -NH3 and -BH3 rotational dynamics...  

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

Quasielastic neutron scattering of -NH3 and -BH3 rotational dynamics in orthorhombic ammonia borane. Quasielastic neutron scattering of -NH3 and -BH3 rotational dynamics in...

9

The influence of transition metal ions on the catalytic performance of Ru particles during the liquid phase hydrogenation of benzene to cyclohexene  

Science Journals Connector (OSTI)

The influence of some transition metal ions including Fe2+, Ni2+, Cr3+, Mn2+, Zn2+, Cd2+...on the catalytic performance of Ru particles during the liquid phase partial hydrogenation of benzene to cyclohexene was ...

Yixin Qu; Chengxuan Fang; Chengyang Qian…

2014-04-01T23:59:59.000Z

10

Microsoft Word - BH-OM-1089 NEPA.docx  

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

BH-OM-1089 BH-OM-1089 Title: BH Fence Extension Modifications Description: Subcontractor shall shall provide all labor, materials, equipment, tools, fabrication, transportation, supervision, mobile lifting equipment, and rigging required to install BH fence modifications. Regulatory Requirements: NEPA Implementing Procedures (10 CFR 1021) 10 CFR 1021.410 (Application of Categorical Exclusions) (a) The actions listed in Appendices A and B of Subpart D are classes of actions that DOE has determined do not individually or cumulatively have a significant effect on the human environment (categorical exclusions). (b) To find that a proposal is categorically excluded, DOE shall determine the following: (1) The proposed action fits within a class of actions that is listed in Appendix A or B of Subpart D;

11

Microsoft Word - BH-09-038 NEPA.docx  

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

BH-09-038 BH-09-038 Title: Lower BH 36" Crude Oil Pipeline at the Needmore Diversion Channel Description: Subcontractor shall shall provide all labor, tools, materials (except GFE), equipment, and supervision required to lower the existing BH 36" crude oil pipeline at the Needmore Diversion Channel and to install a new block valve and valve station. Excavation for the installation of the new portion of the 36" crude oil line, backfill and removal of the decommissioned section of the existing 36" line will be the responsibility of Jefferson County Drainage District No. 6 under the direction of a Government Representative. Regulatory Requirements: NEPA Implementing Procedures (10 CFR 1021) 10 CFR 1021.410 (Application of Categorical Exclusions)

12

Glycerol Hydrogenolysis on Carbon-Supported PtRu and AuRu Bimetallic Catalysts  

SciTech Connect

Bimetallic PtRu and AuRu catalysts were prepared by a surface redox method in which Pt or Au was deposited onto the surface of carbon-supported Ru nanoparticles with an average diameter of 2-3 nm. Characterization by H2 chemisorption, analytical TEM, and X-ray absorption spectroscopy at the Ru K-edge, Pt LIII-edge, and Au LIII-edge confirmed that Pt and Au were successfully deposited onto Ru without disrupting the Ru particles. Depression of the ethane hydrogenolysis rate over Ru after addition of Au provided further evidence of successful deposition. The bimetallic particles were subsequently evaluated in the aqueous-phase hydrogenolysis of glycerol at 473 K and 40 bar H2 at neutral and elevated pH. Although monometallic Pt and Ru exhibited different activities and selectivities to products, the bimetallic PtRu catalyst functioned more like Ru. A similar result was obtained for the AuRu bimetallic catalyst. The PtRu catalyst appeared to be stable under the aqueous-phase reaction conditions, whereas the AuRu catalyst was altered by the harsh conditions. Gold appeared to migrate off the Ru and agglomerate on the carbon during the reaction in liquid water.

Maris,E.; Ketchie, W.; Murayama, M.; Davis, R.

2007-01-01T23:59:59.000Z

13

Lightest Isotope of Bh Produced Via the 209Bi(52Cr,n)260BhReaction  

SciTech Connect

The lightest isotope of Bh known was produced in the new {sup 209}Bi({sup 52}Cr,n){sup 260}Bh reaction at the Lawrence Berkeley National Laboratory's 88-Inch Cyclotron. Positive identification was made by observation of eight correlated alpha particle decay chains in the focal plane detector of the Berkeley Gas-Filled Separator. {sup 260}Bh decays with a 35{sub -9}{sup +19} ms half-life by alpha particle emission mainly by a group at 10.16 MeV. The measured cross section of 59{sub -20}{sup +29} pb is approximately a factor of four larger than compared to recent model predictions. The influences of the N = 152 and Z = 108 shells on alpha decay properties are discussed.

Nelson, Sarah L.; Gregorich, Kenneth E.; Dragojevic, Irena; Garcia, Mitch A.; Gates, Jacklyn M.; Sudowe, Ralf; Nitsche, Heino

2007-05-07T23:59:59.000Z

14

AL 3 (BH 261): a new globular cluster in the Galaxy  

E-Print Network (OSTI)

AL~3 (BH 261), previously classified as a faint open cluster candidate, is shown to be a new globular cluster in the Milky Way, by means of B, V and I Color-Magnitude Diagrams. The main feature of AL~3 is a prominent blue extended Horizontal Branch. Its Color-Magnitude Diagrams match those of the intermediate metallicity cluster M~5. The cluster is projected in a rich bulge field, also contaminated by the disk main sequence. The globular cluster is located in the Galactic bulge at a distance from the Sun d$_{\\odot}$ = 6.0$\\pm$0.5 kpc. The reddening is E(B-V)=0.36$\\pm$0.03 and the metallicity is estimated to be [Fe/H] $\\approx$ -1.3$\\pm$0.25. AL~3 is probably one of the least massive globular clusters of the Galaxy.

S. Ortolani; E. Bica; B. Barbuy

2006-06-29T23:59:59.000Z

15

Co-existing structures in 105Ru  

E-Print Network (OSTI)

New positive-parity states, having a band-like structure, were observed in 105Ru. The nucleus was produced in induced fission reaction and the prompt gamma-rays, emitted from the fragments, were detected by the EUROBALL III multi-detector array. The partial scheme of excited 105Ru levels is analyzed within the Triaxial-Rotor-plus-Particle approach.

S. Lalkovski; D. Ivanova; E. A. Stefanova; A. Korichi; P. Petkov; J. Kownacki; T. Kutsarova; A. Minkova; D. Bazzacco; M. Bergstrom; A. Gorgen; B. Herskind; H. Hubel; A. Jansen; S. Kisyov; T. L. Khoo; F. G. Kondev; A. Lopez-Martens; Zs. Podolyak; G. Schonwasser; O. Yordanov

2014-06-01T23:59:59.000Z

16

In-silico and in-vitro elucidation of BH3 binding specificity towards Bcl-2  

E-Print Network (OSTI)

Interactions between Bcl-2-like proteins and BH3 domains play a key role in the regulation of apoptosis. Despite the overall structural similarity of their interaction with helical BH3 domains, Bcl-2-like proteins exhibit ...

London, Nir

17

Graphene on Ru(0001) Moire Corrugation Studied by Scanning Tunneling Microscopy on Au/Graphene/Ru(0001) Heterostructures  

E-Print Network (OSTI)

Graphene on Ru(0001) Moire Corrugation Studied by Scanning Tunneling Microscopy on Au/Graphene on graphene/Ru(0001) were used to study the corrugation of the moire structure of graphene/Ru(0001 for the graphene/Ru(0001) moire is of structural nature rather than electronic. STM showed a large value

Ciobanu, Cristian

18

Microsoft Word - BH-MM-1024 NEPA.docx  

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

Title: Replace BH Circuit Breakers OCB-4009, 4010 and 4011 (Install) Description: Subcontractor shall provide all labor, supervision, tools, equipment, materials (except GFE) and transportation required to remove existing BH oil circuit breakers OCB-4009, 4010 and 4011 and install three new 138 kV SF 6 circuit breakers (supplied as government furnished equipment) on the existing foundations. Tasks include all electrical work and testing of equipment. Regulatory Requirements: NEPA Implementing Procedures (10 CFR 1021) 10 CFR 1021.410 (Application of Categorical Exclusions) (a) The actions listed in Appendices A and B of Subpart D are classes of actions that DOE has determined do not individually or cumulatively have a significant effect on the human environment

19

Microsoft Word - BH-09-038A NEPA.docx  

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

A A Title: Lower BH 36" Crude Oil Pipeline at the Needmore Diversion Channel GFE Description: Manufacturer/supplier shall provide 36" diameter pipe with fusion bonded epoxy coating, for crude oil service and store the pipe material until picked up by others. The manufacturer/supplier shall load materials onto Contractor supplied transportation. Installation of this Government Furnished Equiopment (GFE) will be performed by others under BH-09-038. Regulatory Requirements: NEPA Implementing Procedures (10 CFR 1021) 10 CFR 1021.410 (Application of Categorical Exclusions) (a) The actions listed in Appendices A and B of Subpart D are classes of actions that DOE has determined do not individually or cumulatively have a significant effect on the human environment

20

Non-Born-Oppenheimer calculations of the BH molecule  

SciTech Connect

Variational calculations employing explicitly correlated Gaussian basis functions have been performed for the ground state of the boron monohydride molecule (BH) and for the boron atom (B). Up to 2000 Gaussians were used for each system. The calculations did not assume the Born-Oppenheimer (BO) approximation. In the optimization of the wave function, we employed the analytical energy gradient with respect to the Gaussian exponential parameters. In addition to the total nonrelativistic energies, we computed scalar relativistic corrections (mass-velocity and Darwin). With those added to the total energies, we estimated the dissociation energy of BH. The non-BO wave functions were also used to compute some expectation values involving operators dependent on the interparticle distances.

Bubin, Sergiy; Stanke, Monika; Adamowicz, Ludwik

2009-07-30T23:59:59.000Z

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

Energiegesellschaft Nordost mBH e n o | Open Energy Information  

Open Energy Info (EERE)

Energiegesellschaft Nordost mBH e n o Energiegesellschaft Nordost mBH e n o Jump to: navigation, search Name Energiegesellschaft Nordost mBH (e.n.o.) Place Germany Sector Renewable Energy, Wind energy Product German based Construction Company specialising in the planning, financing, operation and management of renewable power projects particularly wind. References Energiegesellschaft Nordost mBH (e.n.o.)[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Energiegesellschaft Nordost mBH (e.n.o.) is a company located in Germany . References ↑ "Energiegesellschaft Nordost mBH (e.n.o.)" Retrieved from "http://en.openei.org/w/index.php?title=Energiegesellschaft_Nordost_mBH_e_n_o&oldid=344807

22

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

23

Thermochemistry of Lewis Adducts of BH3 and Nucleophilic Substitution of Triethylamine on NH3BH3 in Tetrahydrofuran  

SciTech Connect

The thermochemistry of the formation of Lewis adducts of BH3 in tetrahydrofuran (THF) solution and the gas phase and the kinetics of substitution on ammonia borane (AB) by triethylamine are reported. The dative bond energy of Lewis adducts were predicted using density functional theory at the B3LYP/DZVP2 and B3LYP/6-311+G** levels and correlated ab initio molecular orbital theories, including MP2, G3(MP2), and G3(MP2)B3LYP, and compared with available experimental data and CCSD(T)/CBS theory results. The analysis showed that the G3 methods using either the MP2 or B3LYP geometries reproduce the benchmark results usually to within ~1 kcal/mol. Energies calculated at the MP2/aug-cc-pVTZ level for geometries optimized at the B3LYP/DZVP2 or B3LYP/6-311+G** levels give dative bond energies 2-4 kcal/mol larger than benchmark values. The enthalpies for forming adducts in THF were determined by calorimetry and compared with the calculated energies for the gas phase reaction: THF:BH3 + L ? L:BH3 + THF. The formation of AB in THF was observed to yield significantly more heat than the reaction in gas phase, consistent with strong solvation of AB. Substitution of NEt3 on AB is an equilibrium process in THF solution (K ? 0.2 at 25 °C). The reaction obeys a reversible bimolecular kinetic rate law with the Arrhenius parameters: log A = 14.7 ± 1.1 and Ea = 28.1 ± 1.5 kcal/mol. Simulation of the mechanism using the SM8 continuum solvation model shows the reaction most likely proceeds primarily by a classical SN2 mechanism. Pacific Northwest National Laboratory is operated by Battelle for the USDOE.

Potter, Robert G.; Camaioni, Donald M.; Vasiliu, Monica; Dixon, David A.

2010-11-15T23:59:59.000Z

24

Ultralow platinum-loading PtPdRu@PtRuIr/C catalyst with excellent CO tolerance and high performance for the methanol oxidation reaction  

Science Journals Connector (OSTI)

Catalysts of Pd4%Pt10%Ru5%Ir2%/C, Pd4%@Pt10%Ru5%Ir2%/C, Pd4%Pt2%@Pt8%Ru5%Ir2%/C, and Pd4%Pt2%Ru2%@Pt8%Ru3%Ir2%/C were referred to as PDRI, D@PRI, PD@PRI, and PDR...

Yan-Ni Wu; Shi-Jun Liao; Hai-Fu Guo; Xiang-Ying Hao; Zhen-Xing Liang

2014-06-01T23:59:59.000Z

25

Complex SrRuO3?Pt and LaRuO3?Pt Catalysts for Direct Alcohol Fuel Cells  

Science Journals Connector (OSTI)

Complex SrRuO3?Pt and LaRuO3?Pt Catalysts for Direct Alcohol Fuel Cells ... While currently LaRuO3/Pt composition possesses the highest activity, optimization of perovskite structure (by doping from A and B sites) may lead even to more advanced catalysts. ...

Aidong Lan; Alexander S. Mukasyan

2008-07-02T23:59:59.000Z

26

Hydrogen Storage Properties of New Hydrogen-Rich BH3NH3-Metal...  

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

Storage Properties of New Hydrogen-Rich BH3NH3-Metal Hydride (TiH2, ZrH2, MgH2, andor CaH2) Composite Systems. Hydrogen Storage Properties of New Hydrogen-Rich BH3NH3-Metal...

27

Efficient chemical regeneration of LiBH4NH3 spent fuel for hydrogen storage  

Science Journals Connector (OSTI)

Abstract The absence of an efficient method for the regeneration of ammine metal borohydrides (M(BH4)nxNH3, AMBs) from their dehydrogenated products has hindered their potential application as hydrogen storage materials. In this paper, we demonstrate a high-yield chemical regeneration of LiBH4NH3 based on a three step process (digestion (H+ addition), reduction (H? addition), and ammonia complexation) at ambient temperature. Our results demonstrated that Li–B–N polymer was digested by methanol to form LiB(OCH3)4, which can be converted into LiBH4 by using LiAlH4 in the reduction process. The generation of LiBH4NH3 in ammonia complexion step was achieved by exposing the obtained LiBH4 in an ammonia atmosphere.

Yingbin Tan; Xiaowei Chen; Guanglin Xia; Xuebin Yu

2014-01-01T23:59:59.000Z

28

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

29

Lab Safety: RuO4Lab Safety: RuO4 Ruthenium tetroxide is a strong oxidizing agent and must be stored in the  

E-Print Network (OSTI)

Lab Safety: RuO4Lab Safety: RuO4 RuO4 Note: Ruthenium tetroxide is a strong oxidizing agent with sodium bisulfite solution to decompose RuO4 and then flush with plenty of water. #12;Lab Safety:Lab Safety: Reaction used to create RuO4 for staining: RuCl3 #12;Sodium hypochlorite: HARMFUL IF SWALLOWED

Cohen, Robert E.

30

Crystal structure and phonon instability of high-temperature ?-Ca(BH4)2  

Science Journals Connector (OSTI)

Ca(BH4)2 is an interesting candidate for high-density hydrogen storage since it contains a large amount of hydrogen by weight and volume, and has been shown to reversibly release and absorb hydrogen, albeit at moderately high temperatures. Ca(BH4)2 undergoes a polymorphic transformation around 400–440 K from a low-temperature ?-Ca(BH4)2 phase to a high-temperature ?-Ca(BH4)2 phase. The crystal structure of ?-Ca(BH4)2 has only recently been resolved, and its thermodynamic phase stability is still not well understood. Using a combined experimental and theoretical approach, we have independently determined the structure of ?-Ca(BH4)2 and assessed its thermodynamic stability in the quasiharmonic approximation. The space-group P42/m gives an excellent agreement between experiment and theory, confirming the result of a recent study [Buchter et al., J. Phys. Chem. B 112, 8042 (2008)]. Using density-functional theory (DFT), we obtained a value of 10.9 kJ/mol for the static total-energy difference between the ?-Ca(BH4)2 and the ?-Ca(BH4)2 phases at T=0?K (without vibrations). Using DFT linear-response calculations, we find that the [1212?] acoustic phonon branch of ?-Ca(BH4)2 is dynamically unstable on the Brillouin-zone boundary at the T=0?K lattice parameters predicted from static DFT calculations. This phonon branch is very sensitive to the lattice parameters and can be stabilized by including lattice expansion due to zero-point vibrational contributions in the quasiharmonic approximation. This expanded stable ?-Ca(BH4)2 structure has a room-temperature vibrational entropy that is 16?J/mol?K higher than that of the ?-Ca(BH4)2 phase, qualitatively consistent with the observed stabilization of the former at elevated temperatures. The main contribution to the entropy difference between the ?-Ca(BH4)2 and ?-Ca(BH4)2 phases comes from the low-frequency region dominated by translational and rotational phonon modes.

Young-Su Lee; Yoonyoung Kim; Young Whan Cho; Daniel Shapiro; Chris Wolverton; Vidvuds Ozoli?š

2009-03-13T23:59:59.000Z

31

Modeling and Optimization of Polymer based Bulk Heterojunction (BH) Solar cell * Biswajit Ray, Pradeep R. Nair, R. Edwin Garca1  

E-Print Network (OSTI)

of the morphology can double the efficiency of BH cells. 1. Introduction Polymer based organic solar cell remains/devices of organic cells to achievable efficiency. The cartoon of a BH solar cell in Fig. 1a illustrates four keyModeling and Optimization of Polymer based Bulk Heterojunction (BH) Solar cell * Biswajit Ray

Alam, Muhammad A.

32

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

SciTech Connect

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

33

RECORD OF CATEGORICAL EXCLUSION DETERMINATION Project 10 No. BH-MM-746  

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

BH-MM-746 BH-MM-746 Title: BH Anhydrite Pond Liner Replacement Description: Subcontractor shall provide all labor, tools, equipment, materials, consumables, services, insurance, transportation, storage and supervision required to replace the BH Anhydrite Pond Liner. Regulatory Requirements: NEPA Implementing Procedures (10 CFR 1021) 10 CFR 1021.410 (Application of Categorical Exclusions) (a) The actions listed in Appendices A and B of Subpart D are classes of actions that DOE has determined do not individually or cumulatively have a significant effect on the human environment (categorical exclusions). (b) To find that a proposal is categorically excluded, DOE shall determine the following: (1) The proposed action fits within a class of actions that is listed in Appendix A or B of Subpart D;

34

RECORD OF CATEGORICAL EXCLUSION DETERMINATION Project ID No. BH-DS-171  

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

DS-171 DS-171 Title: Use RW Surge Line to BH Anhydrite Pond for RWIS Recycle Description: DOE M&O Contractor will cap the existing recycle line at the BH raw water intake structure for repair work and install a valve in place of the existing surge relief valve to serve as a recycle valve to control flow from the BH raw water intake pumps. The raw water surge line will discharge to the BH anhydrite pond while repairs are being made to the recycle line. Regulatory Requirements: NEPA Implementing Procedures (10 CFR 1021) 10 CFR 1021.410 (Application of Categorical Exclusions) (a) The actions listed in Appendices A and B of Subpart 0 are classes of actions that DOE has determined do not individually or cumulatively have a significant effect on the human environment

35

A prospect for LiBH4 as on-board hydrogen storage  

Science Journals Connector (OSTI)

In contrast to the traditional metal hydrides, in which hydrogen storage involves the reversible hydrogen entering/exiting of the host hydride lattice, LiBH4 releases hydrogen via decomposition that produces segr...

Ivan Saldan

2011-10-01T23:59:59.000Z

36

Controlling the Decomposition Pathway of LiBH4 via Confinement in Highly Ordered Nanoporous Carbon  

Science Journals Connector (OSTI)

The wetting and decomposition behavior of LiBH4 has been investigated in the presence of highly ordered nanoporous hard carbon (NPC) with hexagonally packed 2 nm diameter columnar pores. Calorimetry, X-ray diffraction, and IR spectroscopy measurements ...

Xiangfeng Liu; David Peaslee; C. Z. Jost; E. H. Majzoub

2010-08-04T23:59:59.000Z

37

DO QUIESCENT AND ACTIVE GALAXIES HAVE DIFFERENT M{sub BH}-{sigma}{sub *} RELATIONS?  

SciTech Connect

To investigate the validity of the assumption that quiescent galaxies and active galaxies follow the same black hole mass (M{sub BH})-stellar velocity dispersion ({sigma}{sub *}) relation, as required for the calibration of M{sub BH} estimators for broad line active galactic nuclei (AGNs), we determine and compare the M{sub BH}-{sigma}{sub *} relations, respectively, for quiescent and active galaxies. For the quiescent galaxy sample, composed of 72 dynamical M{sub BH} measurements, we update {sigma}{sub *} for 28 galaxies using homogeneous H-band measurements that are corrected for galaxy rotation. For active galaxies, we collect 25 reverberation-mapped AGNs and improve {sigma}{sub *} measurement for two objects. Combining the two samples, we determine the virial factor f, first by scaling the active galaxy sample to the M{sub BH}-{sigma}{sub *} relation of quiescent galaxies, and second by simultaneously fitting the quiescent and active galaxy samples, as f=5.1{sub -1.1}{sup +1.5} and f=5.9{sub -1.5}{sup +2.1}, respectively. The M{sub BH}-{sigma}{sub *} relation of active galaxies appears to be shallower than that of quiescent galaxies. However, the discrepancy is caused by a difference in the accessible M{sub BH} distribution at given {sigma}{sub *}, primarily due to the difficulty of measuring reliable stellar velocity dispersion for the host galaxies of luminous AGNs. Accounting for the selection effects, we find that active and quiescent galaxies are consistent with following intrinsically the same M{sub BH}-{sigma}{sub *} relation.

Woo, Jong-Hak; Park, Daeseong; Kang, Wol-Rang [Astronomy Program, Department of Physics and Astronomy, Seoul National University, 1 Gwanak-ro Gwanak-gu, Seoul, 151-742 (Korea, Republic of); Schulze, Andreas [Kavli Institute for Astronomy and Astrophysics, Peking University, 100871 Beijing (China); Kim, Sang Chul [Korea Astronomy and Space Science Institute, Daejeon 305-348 (Korea, Republic of); Riechers, Dominik A., E-mail: woo@astro.snu.ac.kr [Astronomy Department, Cornell University, 220 Space Science Building, Ithaca, NY 14853 (United States)

2013-07-20T23:59:59.000Z

38

Multiple Pathways for Benzyl Alcohol Oxidation by Ru(V)?O3+ and Ru(IV)?O2+  

SciTech Connect

Significant rate enhancements are found for benzyl alcohol oxidation by the Ru{sup V}?O{sup 3+} form of the water oxidation catalyst [Ru(Mebimpy)(bpy)(OH{sub 2})]{sup 2+} [Mebimpy = 2,6-bis(1-methylbenzimidazol-2-yl)pyridine; bpy = 2,2?-bipyridine] compared to Ru{sup IV}?O{sup 2+} and for the Ru{sup IV}?O{sup 2+} form with added bases due to a new pathway involving concerted hydride proton transfer (HPT).

Paul, Amit; Hull, Jonathan F; Norris, Michael R; Chen, Zuofeng; Ess, Daniel H.; Concepcion, Javier J; Meyer, Thomas J.

2011-01-01T23:59:59.000Z

39

Multiple Pathways for Benzyl Alcohol Oxidation by RuV=O3+ and RuIV=O2+  

SciTech Connect

Significant rate enhancements are found for benzyl alcohol oxidation by the Ru{sup V}?O{sup 3+} form of the water oxidation catalyst [Ru(Mebimpy)(bpy)(OH{sub 2})]{sup 2+} [Mebimpy = 2,6-bis(1-methylbenzimidazol-2-yl)pyridine; bpy = 2,2?-bipyridine] compared to Ru{sup IV}?O{sup 2+} and for the Ru{sup IV}?O{sup 2+} form with added bases due to a new pathway, concerted hydride proton transfer (HPT).

Paul, Amit; Hull, Jonathan F; Norris, Michael R; Chen, Zuofeng; Ess, Daniel H; Concepcion, Javier J; Meyer, Thomas J

2011-01-01T23:59:59.000Z

40

EPR and IR studies of [Ru(NH?)?]³+-Y and [Ru(NH?)?N?]²+-Y type zeolites  

E-Print Network (OSTI)

EPR AND IR STUDIES OF [Ru(NH ) ] -Y 3 6 AND [Ru(NE ) N ] -Y TYPE ZEOLITES 2+ A Thesis by RAYMOND LEON LEUBNER Submitted to the Graduate College of Texas A&M University in partia1 fulfillment of the requirement for the degree of MASTER... OF SCIENCE December 1973 Major Subject: Chemistry EPR AND IR STUDIES OF [Ru(NH3) ] -Y 3+ AND [Ru(NH3) N ) -Y TYPE ZEOLITES 2+ 3&2 A Thesis by RAYMOND LEON LEUBNER Approved as to style and content by: (Chairman of Committ (Head of Department) (Memb...

Leubner, Raymond Leon

2012-06-07T23:59:59.000Z

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

Diruthenium Tetracarbonate Trianion, [RuII/III(O2 CO)4 3- Based Molecule Based Magnets: Three-Dmensional Network Structure and Two Dimensional Magnetic Ordering  

SciTech Connect

HxK1-xMII[Ru2(CO3)4](H2O)y(MeOH)z (M = Mn, Fe, Co, Ni, Mg) were synthesized from the reaction of MII and K3[Ru2(CO3)4] in water and are isomorphous with an orthorhombic three-dimensional network structures based on e3-CO32- linkages to Ru2 moieties forming layers and also to trans-MII(OH2)4 sites forming linked chains that connect the layers. They, as well as non-isomorphous M = Cu, magnetically order as canted ferrimagnets with Tc = 4.4 {+-} 1.0 K. The presence of S = 0 MII = Mg(II) has essentially no effect on Tc suggesting that the main magnetic pathway does not occur the through MII-based chains, but only via Ru2{center_dot}...Ru2 linkages that reside in layers. This is a rare example of a magnet based upon a second row transition metal.

Kennon, B.; Her, J; Stephens, P; Miller, J

2009-01-01T23:59:59.000Z

42

Atomistic modeling of the directed-assembly of bimetallic Pt-Ru nanoclusters on Ru(0001)-supported monolayer graphene  

E-Print Network (OSTI)

)-supported monolayer graphene Yong Han,1 Albert K. Engstfeld,2 R. Juergen Behm,2 and James W. Evans1,3,* 1 of Pt-Ru nanoclusters (NC's) by sequential deposition of Pt and Ru on a periodically rumpled graphene. The periodic variation of the adsorption energy across the graphene sheet directs the assembly of NC

Ulm, Universität

43

Photochemical Reactivity of RuII(?6-p-cymene) Flavonolato Compounds  

Science Journals Connector (OSTI)

Photoactivation is a promising approach for modulating the biological activity of RuII compounds. In this work, RuII flavonolato compounds, [Ru(?6-p-cymene)(L)(3-Hfl)]OTf (8; 3-Hfl = monoanion of 3-hydroxyflavone; L = solvent) and [Ru(?6-p-cymene)Cl(3-Hfl-...

Sushma L. Saraf; Trevor J. Fish; Abby D. Benninghoff; Ashley A. Buelt; Rhett C. Smith; Lisa M. Berreau

2014-11-04T23:59:59.000Z

44

RECORD OF CATEGORICAL EXCLUSION DETERMINATION Project ID No. BH-09-080  

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

Door Repairs Door Repairs Description: Subcontractor shall provide all materials, equipment, tools, transportation, supervision, labor, mobile lifting equipment, and rigging needed to repair the doors on BH Buildings 802 and 812. Tasks include replacing one damaged coiling steel door, one damaged pedestrian door and damaged building components on BH Building 802; and replacing two corroded pedestrian doors, their frames and hardware, and damaged building trim components on BH Building 812. Regulatory Requirements: NEPA Implementing Procedures (10 CFR 1021) 10 CFR 1021.410 (Application of Categorical Exclusions) (a) The actions listed in Appendices A and B of Subpart D are classes of actions that DOE has determined do not individually or cumulatively have a significant effect on the human environment

45

Fabrication of Graphene Embedded LiFePO4 Using a Catalyst Assisted Self Assembly Method as a Cathode Material for High Power Lithium-Ion Batteries  

Science Journals Connector (OSTI)

Tailoring Crystal Structure and Morphology of LiFePO4/C Cathode Materials Synthesized by Heterogeneous Growth on Nanostructured LiFePO4 Seed Crystals ... Enhancement of Electrochemical Activity of LiFePO4 (olivine) by Amphiphilic Ru-bipyridine Complex Anchored to a Carbon Nanotube ... properties have also been investigated after assembling coin cells with the CA-graphene/LiFePO4 composite as a cathode active material. ...

WonKeun Kim; WonHee Ryu; DongWook Han; SungJin Lim; JiYong Eom; HyukSang Kwon

2014-03-12T23:59:59.000Z

46

RECORD OF CATEGORICAL EXCLUSION DETERMINATION Project ID No. BH-MM-658  

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

658 658 Title: Rework BH 36" Crude Oil Pipeline Mainline Valves Description: Subcontractor shall furnish all labor, tools, materials, equipment and supervision required to rework the BH 36" crude oil pipeline mainline valves. Tasks include excavation of the valve stations, installation of vent valves, and rework of the crude oil pipeline mainline valves. Regulatory Requirements: NEPA Implementing Procedures (10 CFR 1021) 10 CFR 1021.410 (Application of Categorical Exclusions) (a) The actions listed in Appendices A and B of Subpart D are classes of actions that DOE has determined do not individually or cumulatively have a significant effect on the human environment

47

Novel Approach for Synthesis of Magnesium Borohydride, Mg(BH4)2  

Science Journals Connector (OSTI)

Mg(BH4)2 is a complex hydride with one of the highest hydrogen contents (? 15%) known yet. Several synthesis routes have been reported for it, all based on the metathesis reaction of MgCl2 with NaBH4 performed in a ball-mill or in suitable solvents. In the present study a new approach for synthesis of Mg(BH4)2 will be presented in which the more reactive MgBr2 is used instead of MgCl2. For this purpose a mixture of MgBr2 and NaBH4 (molar ratio: 1: 2 and 1:2.15) was ball-milled for 6, 12 and 18 h, respectively. Mg(BH4)2 was extracted from the reaction product (Mg(BH4)2 + NaBr) by Soxhlet with diethylether over a day. The remaining residue after solvent evaporation was dried in vacuum at 150°C for 24 h and 5 h at 190 °C. The intermediate and final products of the reactions were analyzed using XRD, DTA/TG, Mass and Vibrational Spectroscopy. The XRD diagrams of the mixture after ball milling showed only the characteristic reflections of NaBr and the patterns obtained after solvent extraction was in all cases consistent with ?- Mg(BH4)2. The additional weak MgBr2 reflections, decreased by increasing the ball milling time from 6 to 18 h. The DTA/TG coupled with MS revealed ?11% mass loss when the product was heated up to 600 °C. The result of MS detected that the exhaust gas is exclusively H2. Compared to MgCl2, the use of MgBr2 has two advantages: the reaction time is considerably shorter and the excess of MgBr2 can act as additive lowering the onset temperature for hydrogen release from 290 °C - for pure Mg(BH4)2 - to ? 220 °C.

Ali Bateni; Stephan Scherpe; Selcuk Acar; Mehmet Somer

2012-01-01T23:59:59.000Z

48

High density Ru nanocrystal deposition for nonvolatile memory applications  

E-Print Network (OSTI)

High density Ru nanocrystal deposition for nonvolatile memory applications Damon B. Farmer School density optimizes the charge storing capability of the floating layer, while a high degree of size

49

OBSERVATIONS IN REACTIVITY BETWEEN BH CONTAINING COMPOUNDS AND ORGANOMETALLIC REAGENTS: SYNTHESIS OF BORONIC ACIDS, BORONIC ESTERS, AND MAGNESIUM HYDRIDES  

E-Print Network (OSTI)

aryl bromides and H 2 BN(iPr) 2 Scheme 2.7. Hydroboration oftransfer hydride to BH 2 -N(iPr) 2 Scheme 2.10. Conversionchloride with BH 2 -N(iPr) 2 Scheme 3; Aqueous quench of p-

Clary, Jacob William

2012-01-01T23:59:59.000Z

50

Investigation of high temperature gaseous species by Knudsen cell mass spectrometry above the condensed systems Cu-Y-Ru-C, Ag-Y-Ru-C, and Au-Y- Ru-C  

E-Print Network (OSTI)

using the Third-law method. In addition, the molecules Cu , RuC, and YC were investigated using the Second-law method and the Third-law method. The reactions investigated are listed below: 2 Cu (g) = Cu 2 (g) 2 Ag (g) - Ag2 (g) Ru (g) + C (graphite...) = RuC (g) (g) + 2 C (graphite) YC (g) 2 Y (g) + Au (g) = YAu (g) Y (g) + Au (g) 2 Y (g) + Cu (g) YAu (g) + Au (g) = Ycu (g) Y (g) + Cu (g) YCu (g) + Cu (g) 2 Y (g) + Ru (g) YRu (g) Y (g) + RuC (g) YRu (g) + C (graphite) The reaction enthalpies...

Wilhite, Dale Wayne

2012-06-07T23:59:59.000Z

51

Ru/Ni/MgAl2O4 catalysts for steam reforming of methane: effects of Ru content on self-activation property  

Science Journals Connector (OSTI)

The effects of Ru on the self-reducibility of Ru-doped Ni/MgAl2O4 catalysts, which do not need pre-reduction treatment with H2, were investigated in the steam reforming of methane (SRM). The Ru-promoted Ni/MgAl2O

Seung-Chan Baek; Ki-Won Jun; Yun-Jo Lee; Jae Dong Kim…

2012-04-01T23:59:59.000Z

52

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

53

REVERSIBLE HYDROGEN STORAGE IN A LiBH{sub 4}-C{sub 60} NANOCOMPOSITE  

SciTech Connect

Reversible hydrogen storage in a LiBH{sub 4}:C{sub 60} nanocomposite (70:30 wt. %) synthesized by solvent-assisted mixing has been demonstrated. During the solvent-assisted mixing and nanocomposite formation, a chemical reaction occurs in which the C{sub 60} cages are significantly modified by polymerization as well as by hydrogenation (fullerane formation) in the presence of LiBH{sub 4}. We have determined that two distinct hydrogen desorption events are observed upon rehydrogenation of the material, which are attributed to the reversible formation of a fullerane (C{sub 60}H{sub x}) as well as a LiBH4 species. This system is unique in that the carbon species (C{sub 60}) actively participates in the hydrogen storage process which differs from the common practice of melt infiltration of high surface area carbon materials with LiBH{sub 4} (nanoconfinment effect). This nanocomposite demonstrated good reversible hydrogen storage properties as well as the ability to absorb hydrogen under mild conditions (pressures as low as 10 bar H{sub 2} or temperatures as low as 150?C). The nanocomposite was characterized by TGA-RGA, DSC, XRD, LDI-TOF-MS, FTIR, 1H NMR, and APPI MS.

Teprovich, J.; Zidan, R.; Peters, B.; Wheeler, J.

2013-08-06T23:59:59.000Z

54

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

55

Decomposition Behavior of Eutectic LiBH4–Mg(BH4)2 and Its Confinement Effects in Ordered Nanoporous Carbon  

Science Journals Connector (OSTI)

Safe and efficient hydrogen storage is the key challenge for the widespread commercialization of hydrogen-powered vehicles. ... (20) The desorption rate at 300 °C of nanoconfined LiBH4 in the carbon aerogel host was 50 times faster than the bulk sample and the dehydrided sample was rehydrided at 100 bar H2 and 400 °C, reduced from 350 bar H2 and 600 °C. ... It seems that currently none of the solid state storage materials can reach the required storage densities for a H-powered vehicle. ...

Xiangfeng Liu; David Peaslee; T. Patrick Sheehan; Eric H. Majzoub

2014-11-10T23:59:59.000Z

56

EXPLORING THE LOW-MASS END OF THE M{sub BH}-{sigma}{sub *} RELATION WITH ACTIVE GALAXIES  

SciTech Connect

We present new measurements of stellar velocity dispersions, using spectra obtained with the Keck Echellette Spectrograph and Imager (ESI) and the Magellan Echellette (MagE), for 76 Seyfert 1 galaxies from the recent catalog of Greene and Ho. These objects were selected from the Sloan Digital Sky Survey (SDSS) to have estimated black hole (BH) masses below 2 x 10{sup 6} M{sub sun}. Combining our results with previous ESI observations of similar objects, we obtain an expanded sample of 93 galaxies and examine the relation between BH mass and velocity dispersion (the M{sub BH}-{sigma}{sub *} relation) for active galaxies with low BH masses. The low-mass active galaxies tend to follow the extrapolation of the M{sub BH}-{sigma}{sub *} relation of inactive galaxies. Including results for active galaxies of higher BH mass from the literature, we find a zero point {alpha} = 7.68 {+-} 0.08 and slope of {beta} = 3.32 {+-} 0.22 for the M{sub BH}-{sigma}{sub *} relation (in the form log M{sub BH} = {alpha} + {beta}log ({sigma}{sub *}/200 km s{sup -1})), with intrinsic scatter of 0.46 {+-} 0.03 dex. This result is consistent, within the uncertainties, with the slope of the M{sub BH}-{sigma}{sub *} relation for reverberation-mapped active galaxies with BH masses from 10{sup 6} to 10{sup 9} M{sub sun}. For the subset of our sample having morphological information from Hubble Space Telescope images, we examine the slope of the M{sub BH}-{sigma}{sub *} relation separately for subsamples of barred and unbarred host galaxies, and find no significant evidence for a difference in slope. We do find a mild offset between low-inclination and high-inclination disk galaxies, such that more highly inclined galaxies tend to have larger {sigma}{sub *} at a given value of BH mass, presumably due to the contribution of disk rotation within the spectroscopic aperture. We also find that the velocity dispersion of the ionized gas, measured from narrow emission lines including [N II] {lambda}6583, [S II] {lambda}{lambda}6716, 6731, and the core of [O III] {lambda}5007 (with the blueshifted wing removed), trace the stellar velocity dispersion well for this large sample of low-mass Seyfert 1 galaxies.

Xiao Ting [Key Laboratory for Research in Galaxies and Cosmology, Department of Astronomy, University of Science and Technology of China, Chinese Academy of Sciences, Hefei, Anhui 230026 (China); Barth, Aaron J. [Department of Physics and Astronomy, University of California at Irvine, 4129 Frederick Reines Hall, Irvine, CA 92697-4575 (United States); Greene, Jenny E.; Ludwig, Randi R. [University of Texas at Austin, Department of Astronomy, 1 University Station, C1400, Austin, TX 78712-0259 (United States); Ho, Luis C. [The Observatories of the Carnegie Institution for Science, 813 Santa Barbara Street, Pasadena, CA 91101 (United States); Bentz, Misty C. [Department of Physics and Astronomy, Georgia State University, Astronomy Offices, One Park Place South SE, Suite 700, Atlanta, GA 30303 (United States); Jiang Yanfei, E-mail: xiaoting@mail.ustc.edu.cn, E-mail: barth@uci.edu, E-mail: jgreene@astro.as.utexas.edu, E-mail: lho@obs.carnegiescience.edu, E-mail: bentz@chara.gsu.edu, E-mail: yanfei@astro.princeton.edu [Department of Astrophysical Sciences, Princeton University, Princeton, NJ 08544 (United States)

2011-09-20T23:59:59.000Z

57

CO2 Reduction on Supported Ru/Al2O3 Catalysts: Cluster Size Dependence...  

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

CO2 Reduction on Supported RuAl2O3 Catalysts: Cluster Size Dependence of Product Selectivity. CO2 Reduction on Supported RuAl2O3 Catalysts: Cluster Size Dependence of Product...

58

Enhanced Magnetism in Epitaxial SrRuO3 Thin Films  

E-Print Network (OSTI)

Enhanced Magnetism in Epitaxial SrRuO 3 A. J. Grutter, 1, 2and their e?ects on magnetism. In this paper we demonstrateXMCD con?rmed that the magnetism originates from the Ru 4+

Grutter, A.J.

2010-01-01T23:59:59.000Z

59

RECORD OF CATEGORICAL EXCLUSION DETERMINATION Project ID No. BH-MM-761  

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

Title: Replace BH RWIS Oil Water Separator Tank with Concrete Tank Description: Subcontractor shall furnish all labor, tools, materials, equipment and supervision required to replace the BH RWIS oil water separator tank with a new concrete tank. Regulatory Requirements: NEPA Implementing Procedures (10 CFR 1021) 10 CFR 1021.410 (Application of Categorical Exclusions) (a) The actions listed in Appendices A and B of Subpart D are classes of actions that DOE has determined do not individually or cumulatively have a significant effect on the human environment (categorical exclusions). (b) To find that a proposal is categorically excluded, DOE shall determine the following: (1) The proposed action fits within a class of actions that is listed in Appendix A or B of Subpart D;

60

RECORD OF CATEGORICAL EXCLUSION DETERMINATION Project ID No. BH-10-028  

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

10-028 10-028 Title: Re-seal Polyurethane Overcoat on BH Substation Relay Building 814 Description: Subcontractor shall furnish all services, tools, equipment, supplies, transportation, facilities, labor, supervision, and materials needed to repair, clean, and re-coat the existing Polyurethane Foam Roofing System on the BH Substation relay Building 814. Regulatory Requirements: NEPA Implementing Procedures (10 CFR 1021) 10 CFR 1021.410 (Application of Categorical Exclusions) (a) The actions listed in Appendices A and B of Subpart D are classes of actions that DOE has determined do not individually or cumulatively have a significant effect on the human environment (categorical exclusions). (b) To find that a proposal is categorically excluded, DOE shall determine the following:

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

RECORD OF CATEGORICAL EXCLUSION DETERMINATION Project ID No. BH-OM-1012  

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

OM-1012 OM-1012 Title: BH Raw Water Brine Header Piping Inspection Description: Subcontractor shall provide all supervision, transportation, labor, materials and equipment required to locate, excavate, and inspect two locations of the BH Raw Water/Brine Site Piping Header. Inspections will be performed by Automated Ultrasonic Testing. All work will be done on Government property. Regulatory Requirements: NEPA Implementing Procedures (10 CFR 1021) 10 CFR 1021.410 (Application of Categorical Exclusions) (a) The actions listed in Appendices A and B of Subpart 0 are classes of actions that DOE has determined do not individually or cumulatively have a significant effect on the human environment (categorical exclusions). (b) To find that a proposal is categorically excluded, DOE shall determine the following:

62

Microsoft Word - BH-MM-1066,BM-MM-1067,WH-MM-1068.docx  

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

, BM-MM-1067, WH-MM-1068 , BM-MM-1067, WH-MM-1068 Title: Pumping System for 100 MBD Cavern Capacity Maintenance - BH, BM, WH Description: Subcontractor shall provide all labor, tools, materials, equipment, services, transportation, storage and supervision required to install new Variable Frequency Drive (VFD) buildings at the BH, BM, and WH SPR sites. The buildings will house the VFD electrical system used to control the operation of the site pumps. Tasks include excavation for all foundations; construction of concrete foundation, steel support structure, and precast concrete deck; and installation of GFE pre-fabricated metal building on concrete deck. Subcontractor shall evaluate and implement Green Building Design where applicable. Regulatory Requirements: NEPA Implementing Procedures (10 CFR 1021)

63

RECORD OF CATEGORICAL EXCLUSION DETERMINATION Project ID No. BH-MM-785  

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

85 85 Title: Install Temperature Monitoring on BH 36 inch Crude Oil Pipeline Description: Subcontractor shall shall provide all labor, materials, tools, equipment, and supervision required to install temperature monitoring instrumentation on the BH 36 inch crude oil pipeline at valve stations 8PL00-MOV-02, 8PL00-MOV-04, 8PL00-MOV-05, and 8PL00- MOV-15. Tasks include installation of thermocouples, transmitters, and cables. Regulatory Requirements: NEPA Implementing Procedures (10 CFR 1021) 10 CFR 1021.410 (Application of Categorical Exclusions) (a) The actions listed in Appendices A and B of Subpart D are classes of actions that DOE has determined do not individually or cumulatively have a significant effect on the human environment

64

Adsorption study of carbon oxides on reticulated vitreous carbon/RVC/plated with Ru electrode  

SciTech Connect

The adsorption of CO and CO2 on Ru/RVC and Ru/Pt electrodes has been studied by a potentiodynamic technique. It was shown that there are some differences between CO adsorption products on these two kinds of electrodes.CO2 adsorption on Ru electrode was not observed.

Czerwinski, A.

1987-04-01T23:59:59.000Z

65

Reaction Mechanisms in the Li3AlH6/LiBH4 and Al/LiBH4 Systems for Reversible Hydrogen Storage. Part 1: H capacity and Role of Al  

SciTech Connect

Lithium-based complex hydrides, including lithium aluminum hydrides (LiAlH4, Li3AlH6) and lithium borohydride (LiBH4), are some of the most attractive materials for hydrogen storage due to their high hydrogen contents. In the present work, we investigated the hydrogen storage properties of combined systems of Li3AlH6-LiBH4 and Al-LiBH4, both of which exhibit favorable hydrogen storage properties owing to the formation of AlB2 during dehydrogenation. TGA data showed that TiCl3-doped Li3AlH6/2LiBH4 and 0.5Al/LiBH4 release ~ 8.8 and ~ 8.4 wt.% H2, respectively, with ~ 3.8 and ~ 5.8 wt.% release after rehydrogenation of the dehydrogenation product. XRD results identified LiH and AlB2 phases in the dehydrogenated products, which has suggested a mechanism by which Al contributes to the remarkable improvement of the reversible storage properties of LiBH4 in terms of the temperature and pressure for H2 release/uptake.

Choi, Young Joon; Lu, Jun; Sohn, Hong Yong; Fang, Zhigang Zak

2011-04-07T23:59:59.000Z

66

OBSERVATIONS IN REACTIVITY BETWEEN BH CONTAINING COMPOUNDS AND ORGANOMETALLIC REAGENTS: SYNTHESIS OF BORONIC ACIDS, BORONIC ESTERS, AND MAGNESIUM HYDRIDES  

E-Print Network (OSTI)

Reaction of BH 3 :THF with magnesium hydride byproduct. A.It was also observed that magnesium hydride can partiallyACIDS, BORONIC ESTERS, AND MAGNESIUM HYDRIDES A dissertation

Clary, Jacob William

2012-01-01T23:59:59.000Z

67

Diruthenium Tetracarbonate Trianion, [RuII/III2(O2CO)4]3?, Based Molecule-Based Magnets: Three-Dimensional Network Structure and Two-Dimensional Magnetic Ordering  

SciTech Connect

HxK1-xMII[Ru2(CO3)4](H2O)y(MeOH)z (M = Mn, Fe, Co, Ni, Mg) were synthesized from the reaction of MII and K3[Ru2(CO3)4] in water and are isomorphous with an orthorhombic three-dimensional network structures based on e3-CO32- linkages to Ru2 moieties forming layers and also to trans-MII(OH2)4 sites forming linked chains that connect the layers. They, as well as non-isomorphous M = Cu, magnetically order as canted ferrimagnets with Tc = 4.4 {+-} 1.0 K. The presence of S = 0 MII = Mg(II) has essentially no effect on Tc suggesting that the main magnetic pathway does not occur the through MII-based chains, but only via Ru2{center_dot}...Ru2 linkages that reside in layers. This is a rare example of a magnet based upon a second row transition metal.

Novoa, J.; Stephens, P; Weerasekare, M; Shum, W; Miller, J

2009-01-01T23:59:59.000Z

68

Intramolecular electron transfer in mixed-valence complexes [(NH3)5Ru-L-Ru(NH3)5]5+ (L = N2, pyz, pym, 4,4?-bipy, bpa)  

Science Journals Connector (OSTI)

The dynamics of the intramolecular electron transfer from Ru(II) to Ru(III) in binuclear mixedvalence complexes [(NH3)5Ru-L- Ru(NH3)5]5+ (L = N2,pyz, bipy, pym, bpa) is analyzed by the semiempirical CINDO +...

O. V. Sizova; V. I. Baranovskii; A. I. Panin…

69

Intramolecular electron transfer in mixed-valence complexes [(NH3)5Ru-L-Ru(NH3)5]5+ (L = N2, pyz, pym, 4,4’-bipy, bpa)  

Science Journals Connector (OSTI)

The dynamics of the intramolecular electron transfer from Ru(II) to Ru(III) in binuclear mixed-valence complexes [NH3)5Ru -L-Ru(NH3)5]5+ (L = N2, pyz, bipy, pym, bpa) is analyzed by the semiempiri...

O. V. Sizova; V. I. Baranovskii; A. I. Panin…

2002-02-01T23:59:59.000Z

70

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

SciTech Connect

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

71

CO adsorption on ion-exchanged Ru zeolite catalysts  

SciTech Connect

CO adsorption on ion-exchanged Ru zeolite catalysts, studied by IR spectroscopy, revealed the existence of three types of ruthenium which adsorbed the carbon monoxide into three different states. The ruthenium types were atomically or highly dispersed ruthenium, ruthenium clusters which formed ruthenium carbonyl, and larger (> 1 nm) particles, probably on the outer zeolite surfaces.

Goodwin, J.G. (Univ. of Pittsburgh); Naccache, G.

1980-08-01T23:59:59.000Z

72

The Effects of RutheniumThe Effects of Ruthenium--Oxidation States onOxidation States on RuRu Dissolution inDissolution in PtRuPtRu ThinThin--Film ElectrodesFilm Electrodes  

E-Print Network (OSTI)

potential cycling causes Ru dissolution. - High anode potential may occur when fuel cell is turned off.g p y: - Methanol Oxidation M b D d ti- Membrane Degradation - Oxygen Reduction N d i ll i i h R di l i 3 Need

Park, Byungwoo

73

Adsorption of intact methanol on Ru,,0001... Pawel Gazdzicki,1  

E-Print Network (OSTI)

in applications such as the direct methanol fuel cell, where Ru/Pt alloys are used as catalysts for dehydration and hydrogen/ deuterium as suggested in the literature is therefore discarded. At very low coverages or by annealing a low coverage methanol layer, hydrogen bonding leads to cluster formation, as evidenced

74

The Chemistry of Trimethylamine on Ru(001) and O/Ru(001) B. F. Hallac and M. Asscher*  

E-Print Network (OSTI)

of Physical Chemistry and the Farkas Center for Light Induced Processes, The Hebrew UniVersity of Jerusalem of trimethylamine (TMA) has been studied over clean and oxygen-covered Ru(001) under UHV conditions, as a model dissociates upon surface heating, with hydrogen as the only evolving molecule following temperature

Asscher, Micha

75

Search for 2? decays of 96Ru and 104Ru by ultralow-background HPGe ? spectrometry at LNGS: Final results  

Science Journals Connector (OSTI)

An experiment to search for double-? decay processes in 96Ru and 104Ru, which are accompanied by ? rays, has been realized in the underground Gran Sasso National Laboratories of the I.N.F.N. (Italy). Ruthenium samples with masses of ?0.5–0.7 kg were measured with the help of ultralow-background high-purity Ge ?-ray spectrometry. After 2162 h of data taking the samples were deeply purified to reduce the internal contamination of 40K. The last part of the data has been accumulated over 5479 h. New improved half-life limits on 2?+/??+/2? processes in 96Ru have been established on the level of 1020 yr, in particular for decays to the ground state of 96Mo: T1/22?2?+?1.4×1020 yr, T1/22???+?8.0×1019 yr, and T1/20?2K?1.0×1021 yr (all limits are at 90% C.L.). The resonant neutrinoless double-electron captures to the 2700.2 and 2712.7 keV excited states of 96Mo are restricted as T1/20?KL?2.0×1020 yr and T1/20?2L?3.6×1020 yr, respectively. Various two-neutrino and neutrinoless 2? half-lives of 96Ru have been estimated in the framework of the quasiparticle random-phase approximation approach. In addition, the T1/2 limit for 0?2?? transitions of 104Ru to the first excited state of 104Pd has been set as ?6.5×1020 yr.

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

2013-03-06T23:59:59.000Z

76

Effect of MoS{sub 2} on hydrogenation storage properties of LiBH{sub 4}  

SciTech Connect

The hydrogen storage properties of LiBH{sub 4} ball milled with 20 wt% MoS{sub 2} have been investigated. It shows that the LiBH{sub 4} doped with MoS{sub 2} exhibits favorable hydrogenation and dehydrogenation properties in terms of decomposition temperature and hydriding/dehydriding reversibility. The sample with MoS{sub 2} starts to release hydrogen at 230 °C and has a decrease of 80 °C in contrast with pristine LiBH{sub 4}. Furthermore, for the second cycle, the LiBH{sub 4} with MoS{sub 2} maintains a reversible hydrogen storage capacity of about 8.0 wt% which is almost identical with the first cycle under 5 MPa at 550 °C. Analyzed by the XRD and the FTIR results, LiBH{sub 4} can be regenerated after re-hydrogenation under a relatively mild condition by adding MoS{sub 2}. The improvement of the hydrogenation and dehydrogenation properties mainly results from the formation of Li{sub 2}S and MoB{sub 2} during ball milling. -- Graphical abstract: Hydrogen absorption curves of LiBH{sub 4} doped with MoS{sub 2} for five cycles at 400 °C. Highlights: • The hydrogen absorption capacity is nearly the same for 5 cycles at 400 °C. • The sample with MoS{sub 2} starts to release hydrogen at 230 °C. • The coexistence of MoB{sub 2} and Li{sub 2}S catalyzes the decomposition of LiBH{sub 4}.

Liang, Dan [College of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004 (China); Han, Shumin, E-mail: hanshm@ysu.edu.cn [State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004 (China); College of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004 (China); Wang, Jiasheng [College of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004 (China); Zhang, Wei [State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004 (China); College of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004 (China); Zhao, Xin; Zhao, Ziyang [College of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004 (China)

2014-03-15T23:59:59.000Z

77

(Bh 1 2s) 1 / 58 http://ist.ksc.kwansei.ac.jp/tutimura/  

E-Print Network (OSTI)

&R (1978 G/) 7?%A%'%C%/$J$7 q ANSI C (C89, 1989 G/) 4X?t%W%m%H%?%$%W, void 7?, enum 7? q C99 (1999 G/) JC ANSI 5,3J=`5r!JBh 2 HG!K!W B.W. Kernighan, D.M. Ritchie Cx, @PED @25W K]Lu, 6&N)=PHG, 1989 G/. !J (Bh 1FALSE $OC $G$OD>@\\$OMQ0U$5$l$F$$$J$$ 3 ANSI C89 $J$i int 7?$rMQ$$$F #define FALSE 0 $J$I$H

Murota, Kazuo

78

Deliquescence of NaBH4 from Density Functional Theory and Experiments  

Science Journals Connector (OSTI)

Ping Li †, Lin Yu ‡, Michael A. Matthews ‡, Wissam A. Saidi †, and J. Karl Johnson *†§ ... We have used the DFT-TS approach as implemented within VASP by Al-Saidi et al.(43, 44) We have computed adsorption energies and geometries for several H2O/NaBH4(100) configurations using each of these functionals. ... Al-Saidi, W. A.; Voora, V. K.; Jordan, K. D.An Assessment of the vdW-TS Method for Extended Systems J. Chem. ...

Ping Li; Lin Yu; Michael A. Matthews; Wissam A. Saidi; J. Karl Johnson

2013-09-10T23:59:59.000Z

79

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

80

The alpha-cluster model applied to {sup 96}Ru  

SciTech Connect

The states of {sup 96}Ru are investigated in terms of the a alpha+ core structure. The ground state band of the alpha+{sup 92}Mo system is obtained through a local cluster-core potential which includes a fixed set of parameters employed in other mass regions. The calculated spectrum gives a good general description of the experimental {sup 96}Ru levels. The reduced alpha-widths, B(E2) transition rates and rms intercluster separations are determined for the members of the ground state band. The results show that the model can reproduce the order of magnitude of the experimental B(E2) values without the use of effective charges and indicate that the first members of the ground state band present a stronger alpha-cluster character. Predictions concerning a negative parity band of the alpha+{sup 92}Mo system are also shown.

Souza, M. A.; Miyake, H. [Institute of Physics, Universidade de Sao Paulo, Sao Paulo-SP (Brazil)

2010-05-21T23:59:59.000Z

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


81

High-temperature phases of SrRuO3  

Science Journals Connector (OSTI)

The crystal structure of SrRuO3 at high temperatures has been studied using powder neutron diffraction and the Rietveld method. It was determined that from 300 K to approximately 820 K the structure of SrRuO3 is orthorhombic (Pbnm). The material then undergoes a phase transition and becomes tetragonal (I4/mcm) between ?820 and 920 K. The high-temperature (>920 K) structure was found to be the standard cubic perovskite (Pm3m). From the neutron-diffraction data and the space group assignments, the orthorhombic to tetragonal phase transition must be first order, while the transition from the tetragonal to cubic phase is consistent with a second-order phase transition.

Brendan J. Kennedy and Brett A. Hunter

1998-07-01T23:59:59.000Z

82

Biased interface between solid ion conductor LiBH{sub 4} and lithium metal: A first principles molecular dynamics study  

SciTech Connect

We use first-principles molecular dynamics to study the electrochemical solid-solid interface between lithium metal and lithium electrolyte LiBH{sub 4}. An external bias is applied by using an effective screening medium. We observe large polarization in the LiBH{sub 4}, because the lithium cations in LiBH{sub 4} are shifted more on one side of the double-well potential of Li{sup +}. This results in a large potential drop in the interface region and a large double-layer capacity corresponding to ca. 70 ?F/cm{sup 2}. H-coordination to the Li atoms plays an important role in the charge-transfer reaction and ion transfer.

Ikeshoji, Tamio [Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Sendai 980-8577 (Japan) [Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Sendai 980-8577 (Japan); Nanosystem Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), AIST Tsukuba Central 2, 1-1-1 Umezono, Tsukuba 305-8568 (Japan); Ando, Yasunobu; Otani, Minoru; Tsuchida, Eiji [Nanosystem Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), AIST Tsukuba Central 2, 1-1-1 Umezono, Tsukuba 305-8568 (Japan)] [Nanosystem Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), AIST Tsukuba Central 2, 1-1-1 Umezono, Tsukuba 305-8568 (Japan); Takagi, Shigeyuki; Matsuo, Motoaki [Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Sendai 980-8577 (Japan)] [Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Sendai 980-8577 (Japan); Orimo, Shin-ichi [Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Sendai 980-8577 (Japan) [Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Sendai 980-8577 (Japan); WPI-Advanced Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Sendai 980-8577 (Japan)

2013-09-23T23:59:59.000Z

83

Dimerization Induced Deprotonation of Water on RuO2(110)  

SciTech Connect

RuO2 has proven to be indispensable as a co-catalyst in numerous systems designed for photocatalytic water splitting. In this study we have carried out a detailed mechanistic study of water behavior on the most stable RuO2 face, RuO2(110), by employing variable temperature scanning tunneling microscopy and density functional theory calculations. We show that water monomers adsorb molecularly on Ru sites, become mobile above 238 K, diffuse along the Ru rows and form water dimers. The onset for dimer diffusion is observed at ~277 K indicating significantly higher diffusion barrier than that for monomers. More importantly, we find that water dimers deprotonate readily to form Ru-bound H3O2 and bridging OH species. The observed behavior is compared and contrasted with that observed for water on isostructural rutile TiO2(110).

Mu, Rentao; Cantu Cantu, David; Lin, Xiao; Glezakou, Vassiliki Alexandra; Wang, Zhitao; Lyubinetsky, Igor; Rousseau, Roger J.; Dohnalek, Zdenek

2014-10-02T23:59:59.000Z

84

Elastic and chemical contributions to the stability of magnetic surface alloys on Ru(0001)  

Science Journals Connector (OSTI)

We have used density-functional theory to study the miscibility and magnetic properties of surface alloys. Our systems consist of a single pseudomorphic layer of MxN1?x on the Ru(0001) surface, where M=Fe or Co, and N=Pt, Au, Ag, Cd, or Pb. Several of the combinations studied by us display a preference for atomically mixed configurations over phase-segregated forms. We have also performed further ab initio calculations to obtain the parameters describing the elastic interactions between atoms in the alloy layer, including the effective atomic sizes at the surface. We find that while elastic interactions favor alloying for all the systems considered by us, in some cases chemical interactions disfavor atomic mixing. We show that a simple criterion (analogous to the Hume-Rothery first law for bulk alloys) need not necessarily work for strain-stabilized surface alloys because of the presence of additional elastic contributions to the alloy heat of formation that will tend to oppose phase segregation. We find that magnetic moments are significantly enhanced with respect to the bulk elements.

Madhura Marathe; Mighfar Imam; Shobhana Narasimhan

2009-02-11T23:59:59.000Z

85

The kinetics of CO poisoning in simulated reformate and effect of Ru island morphology on PtRu fuel cell catalysts as determined by operando XANES  

SciTech Connect

In situ X-ray absorption spectroscopy (XAS) measurements, including both X-ray absorption near edge spectroscopy (XANES) and extended X-ray absorption fine structure (EXAFS), were carried out on commercially produced Pt and PtRu bimetallic electrocatalysts as well as on a mechanically mixed PtRu bimetallic electrocatalyst in an operating fuel cell in H{sub 2} doped with 150 ppm CO. By use of the novel {Delta}XANES technique, the coverages of CO and ontop and n-fold H (overpotential deposited and underpotential deposited hydrogen) are obtained and compared for the three catalysts, and the results are correlated with PtRu cluster morphology. The mechanical mixing process used to create the bimetallic PtRu catalyst is found to maximize CO tolerance, although the PtRu commercial electrocatalyst exhibits an increased electronic effect, most probably due to the presence of Ru(O){sub x} islands at the catalyst surface. The mobility of the CO on both Ru and Pt is found to be sharply dependent on the CO coverage, decreasing dramatically beyond 0.4 fractional coverage.

Scott, F.; Roth, C; Ramaker, D

2007-01-01T23:59:59.000Z

86

RECORD OF CATEGORICAL EXCLUSION DETERMINATION Project ID No. BH-09-130  

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

130 130 Title: Replacement of BH Deep Anode Ground Bed Site for Cavern 114 Description: Subcontractor shall provide all materials, tools, equipment, supplies, transportation, facilities, labor, supervision, and services required for the installation of a deep anode ground bed site at BM Cavern 114. Regulatory Requirements: NEPA Implementing Procedures (10 CFR 1021) 10 CFR 1021.410 (Application of Categorical Exclusions) (a) The actions listed in Appendices A and B of Subpart D are classes of actions that DOE has determined do not individually or cumulatively have a significant effect on the human environment (categorical exclusions). (b) To find that a proposal is categorically excluded, DOE shall determine the following: (1) The proposed action fits within a class of actions that is listed in Appendix A or B of Subpart D;

87

A candidate LiBH4 for hydrogen storage: Crystal structures and reaction mechanisms of intermediate phases  

E-Print Network (OSTI)

A candidate LiBH4 for hydrogen storage: Crystal structures and reaction mechanisms of intermediate usable as a hydrogen storage material in a moderate temperature range, which is also important storage medium capable of releasing the Department of Energy target of 6.5 wt. % for a hydrogen fuel cell

Goddard III, William A.

88

Journal of Power Sources 165 (2007) 509516 Direct NaBH4/H2O2 fuel cells  

E-Print Network (OSTI)

Published by Elsevier B.V. Keywords: Fuel cell; Hydrogen peroxide; Regenerative fuel cell; Sodium) /hydrogen per- oxide (H2O2) fuel cell (FC) is under development jointly by the University of IllinoisJournal of Power Sources 165 (2007) 509­516 Direct NaBH4/H2O2 fuel cells George H. Mileya,e,, Nie

Carroll, David L.

89

Hydriding and dehydriding characteristics of LiBH{sub 4} and transition metals-added magnesium hydride  

SciTech Connect

Graphical abstract: Hydriding reaction curves under 12 bar H{sub 2}, and dehydriding reaction curves under 1.0 bar H{sub 2}, at 593 K at the 1st cycle for MgH{sub 2}–10Ni–2LiBH{sub 4}–2Ti and MgH{sub 2}. Highlights: ? Addition of Ni, LiBH{sub 4}, and Ti to MgH{sub 2} to increase reaction rates. ? Sample preparation by reactive mechanical grinding. ? At n = 2, the sample absorbed 4.05 wt% H for 60 min at 593 K under 12 bar H{sub 2}. ? Analysis of rate-controlling step for dehydriding of the sample at n = 3. - Abstract: In this study, MgH{sub 2} was used as a starting material instead of Mg. Ni, Ti, and LiBH{sub 4} with a high hydrogen-storage capacity of 18.4 wt% were added. A sample with a composition of MgH{sub 2}–10Ni–2LiBH{sub 4}–2Ti was prepared by reactive mechanical grinding. The activation of MgH{sub 2}–10Ni–2LiBH{sub 4}–2Ti was completed after the first hydriding–dehydrding cycle. The hydriding rate decreases as the temperature increases due to the decrease in the driving force for the hydriding reaction. At the 1st cycle, the sample desorbs 1.45 wt% H for 10 min, 2.54 wt% H for 20 min, 3.13 wt% H for 30 min, and 3.40 wt% H for 60 min at 593 K under 1.0 bar H{sub 2}. At the 2nd cycle, the sample absorbs 3.84 wt% H for 5 min, 3.96 wt% H for 10 min, and 4.05 wt% H for 60 min at 593 K under 12 bar H{sub 2}. MgH{sub 2}–10Ni–2LiBH{sub 4}–2Ti after reactive mechanical grinding contained MgH{sub 2}, Mg, Ni, TiH{sub 1.924}, and MgO phases. The reactive mechanical grinding of Mg with Ni, LiBH{sub 4}, and Ti is considered to create defects on the surface and in the interior of Mg (to facilitate nucleation), and to reduce the particle size of Mg (to shorten diffusion distances of hydrogen atoms). The formation of Mg{sub 2}Ni during hydriding–dehydriding cycling increases the hydriding and dehydriding rates of the sample.

Song, Myoung Youp, E-mail: songmy@jbnu.ac.kr [Division of Advanced Materials Engineering, Hydrogen and Fuel Cell Research Center, Engineering Research Institute, Chonbuk National University, 567 Baekje-daero, Deokjin-gu, Jeonju, 561-756 (Korea, Republic of); Kwak, Young Jun; Lee, Seong Ho [Department of Materials Engineering, Graduate School, Chonbuk National University, 567 Baekje-daero, Deokjin-gu, Jeonju, 561-756 (Korea, Republic of); Park, Hye Ryoung [Faculty of Applied Chemical Engineering, Chonnam National University, 300 Yongbongdong, Bukgu, Gwangju, 500-757 (Korea, Republic of)

2013-07-15T23:59:59.000Z

90

Magnetism and superconductivity in Sr YRu Cu O and magnetism in Ba GdRu Cu O  

Science Journals Connector (OSTI)

We report magnetization, surface resistance ( ), and electron spin resonance (ESR) for non-superconducting Ba2GdRu1-uCuuO6, and find that all three magnetic ions (Gd, Ru, and Cu...

H.A. Blackstead; John D. Dow; D.R. Harshman…

2000-06-01T23:59:59.000Z

91

Low leakage Ru-strontium titanate-Ru metal-insulator-metal capacitors for sub-20?nm technology node in dynamic random access memory  

SciTech Connect

Improved metal-insulator-metal capacitor (MIMCAP) stacks with strontium titanate (STO) as dielectric sandwiched between Ru as top and bottom electrode are shown. The Ru/STO/Ru stack demonstrates clearly its potential to reach sub-20?nm technology nodes for dynamic random access memory. Downscaling of the equivalent oxide thickness, leakage current density (J{sub g}) of the MIMCAPs, and physical thickness of the STO have been realized by control of the Sr/Ti ratio and grain size using a heterogeneous TiO{sub 2}/STO based nanolaminate stack deposition and a two-step crystallization anneal. Replacement of TiN with Ru as both top and bottom electrodes reduces the amount of electrically active defects and is essential to achieve a low leakage current in the MIM capacitor.

Popovici, M., E-mail: Mihaela.Ioana.Popovici@imec.be; Swerts, J.; Redolfi, A.; Kaczer, B.; Aoulaiche, M.; Radu, I.; Clima, S.; Everaert, J.-L.; Van Elshocht, S.; Jurczak, M. [Imec, Leuven 3001 (Belgium)

2014-02-24T23:59:59.000Z

92

Manipulating RuBisCO accumulation in the green alga, Chlamydomonas reinhardtii  

E-Print Network (OSTI)

Manipulating RuBisCO accumulation in the green alga, Chlamydomonas reinhardtii Xenie Johnson photosynthetic car- bon metabolism towards alternative pathways. Keywords RuBisCO � Chloroplast � RNA stability between green algae (Chlamydomonas X. Johnson (&) Centre National de la Recherche Scientifique, Unite

93

Dynamic Characterization of Graphene Growth and Etching by Oxygen on Ru(0001) by Photoemission Electron Microscopy  

E-Print Network (OSTI)

Dynamic Characterization of Graphene Growth and Etching by Oxygen on Ru(0001) by Photoemission of graphene on Ru(0001) was investigated by photoemission electron microscopy (PEEM) and scanning tunneling, we show that graphene overlayers with sizes ranging from nanometers to sub-millimeters have been

Bao, Xinhe

94

Low-temperature Hall effect in substituted Sr2RuO4  

Science Journals Connector (OSTI)

We report the results of a study of the Hall effect and magnetoresistance in single crystals of Sr2RuO4 in which Sr2+ has been substituted by La3+ (Sr2?yLayRuO4) or Ru4+ by Ti4+ (Sr2Ru1?xTixO4). For undoped Sr2RuO4, the purity is so high that the strong-field Hall coefficient can be measured for fields above 4T. The conventional weak-field Hall coefficient as a function of doping shows a sharp jump and sign change at y?0.01 that is unrelated to either a sharp change in Fermi-surface topography or a magnetic instability. The implications of these results are discussed.

Naoki Kikugawa; Andrew Peter Mackenzie; Christoph Bergemann; Yoshiteru Maeno

2004-11-03T23:59:59.000Z

95

Molecular structure of [CpRu(PPh3)2(tht)]BF4, tht=tetrahydrothiophene  

Science Journals Connector (OSTI)

The title compound [CpRu(PPh3)2(tht)]BF4,1, tht=tetrahydrothiophene, is obtained by the reaction of CpRu...3)2Cl, tht and AgBF4 in CH2Cl2 solution. Yellow crystals of [CpRu(PPh3)2(tht)]BF4 were grown by the slow ...

Yanjing Jiang; M. Draganjac; A. W. Cordes

1996-10-01T23:59:59.000Z

96

Syntrophic Effects in a Subsurface Clostridial Consortium on Fe(III)-(Oxyhydr)oxide Reduction and Secondary Mineralization  

SciTech Connect

In this study, we cultivated from subsurface sediments an anaerobic Clostridia 25 consortium that was composed of a fermentative Fe-reducer Clostridium species (designated as 26 strain FGH) and a novel sulfate-reducing bacterium belonging to the Clostridia family 27 Vellionellaceae (designated as strain RU4). In pure culture, Clostridium sp. strain FGH mediated 28 the reductive dissolution/transformation of iron oxides during growth on peptone. When 29 Clostridium sp. FGH was grown with strain RU4 on peptone, the rates of iron oxide reduction 30 were significantly higher. Iron reduction by the consortium was mediated by multiple 31 mechanisms, including biotic reduction by Clostridium sp. FGH and biotic/abiotic reactions 32 involving biogenic sulfide by strain RU4. The Clostridium sp. FGH produced hydrogen during 33 fermentation, and the presence of hydrogen inhibited growth and iron reduction activity. The 34 sulfate-reducing partner strain RU4 was stimulated by the presence of H2 gas and generated 35 reactive sulfide which promoted the chemical reduction of the iron oxides. Characterization of 36 Fe(II) mineral products showed the formation of magnetite during ferrihydrite reduction, and 37 the precipitation of iron sulfides during goethite and hematite reduction. The results suggest an 38 important pathway for iron reduction and secondary mineralization by fermentative sulfate-39 reducing microbial consortia is through syntrophy-driven biotic/abiotic reactions with biogenic 40 sulfide.

Shah, Madhavi; Lin, Chu-Ching; Kukkadapu, Ravi K.; Engelhard, Mark H.; Zhao, Xiuhong; Wang, Yangping; Barkay, Tamar; Yee, Nathan

2013-12-02T23:59:59.000Z

97

MAGIC observations of MWC 656, the only known Be/BH system  

E-Print Network (OSTI)

Context: MWC 656 has recently been established as the first observationally detected high-mass X-ray binary system containing a Be star and a black hole (BH). The system has been associated with a gamma-ray flaring event detected by the AGILE satellite in July 2010. Aims: Our aim is to evaluate if the MWC 656 gamma-ray emission extends to very high energy (VHE > 100 GeV) gamma rays. Methods. We have observed MWC 656 with the MAGIC telescopes for $\\sim$23 hours during two observation periods: between May and June 2012 and June 2013. During the last period, observations were performed contemporaneously with X-ray (XMM-Newton) and optical (STELLA) instruments. Results: We have not detected the MWC 656 binary system at TeV energies with the MAGIC Telescopes in either of the two campaigns carried out. Upper limits (ULs) to the integral flux above 300 GeV have been set, as well as differential ULs at a level of $\\sim$5\\% of the Crab Nebula flux. The results obtained from the MAGIC observations do not support persis...

,

2015-01-01T23:59:59.000Z

98

Role of the Li+ node in the Li-BH4 substructure of double-cation tetrahydroborates  

Science Journals Connector (OSTI)

The phase diagram of combined alkaline light-metal and heavy-metal borohydrides is explored and revealed to be surprisingly rich. The Li cation is revealed to be a versatile node, allowing for three- and fourfold connectivity in the same structure. Topologies of the Li-BH4 substructure range from isolated chains to three-dimensional frameworks as a function of Li content.

Schouwink, P.

2014-10-01T23:59:59.000Z

99

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

100

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

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

THE M {sub BH}-L {sub SPHEROID} RELATION AT HIGH AND LOW MASSES, THE QUADRATIC GROWTH OF BLACK HOLES, AND INTERMEDIATE-MASS BLACK HOLE CANDIDATES  

SciTech Connect

From a sample of 72 galaxies with reliable supermassive black hole masses M {sub bh}, we derive the M {sub bh}-(host spheroid luminosity, L) relation for (1) the subsample of 24 core-Sersic galaxies with partially depleted cores, and (2) the remaining subsample of 48 Sersic galaxies. Using K{sub s} -band Two Micron All Sky Survey data, we find the near-linear relation M {sub bh}{proportional_to}L {sup 1.10{+-}0.20} {sub K{sub s}} for the core-Sersic spheroids thought to be built in additive dry merger events, while we find the relation M {sub bh}{proportional_to}L {sup 2.73{+-}0.55}{sub K{sub s}} for the Sersic spheroids built from gas-rich processes. After converting literature B-band disk galaxy magnitudes into inclination- and dust-corrected bulge magnitudes, via a useful new equation presented herein, we obtain a similar result. Unlike with the M {sub bh}-(velocity dispersion) diagram, which is also updated here using the same galaxy sample, it remains unknown whether barred and non-barred Sersic galaxies are offset from each other in the M {sub bh}-L diagram. While black hole feedback has typically been invoked to explain what was previously thought to be a nearly constant M {sub bh}/M {sub Spheroid} mass ratio of {approx}0.2%, we advocate that the near-linear M {sub bh}-L and M {sub bh}-M {sub Spheroid} relations observed at high masses may have instead arisen largely from the additive dry merging of galaxies. We argue that feedback results in a dramatically different scaling relation, such that black hole mass scales roughly quadratically with the spheroid mass in Sersic galaxies. We therefore introduce a revised cold-gas 'quasar' mode feeding equation for semi-analytical models to reflect what we dub the quadratic growth of black holes in Sersic galaxies built amidst gas-rich processes. Finally, we use our new Sersic M {sub bh}-L equations to predict the masses of candidate intermediate mass black holes in almost 50 low-luminosity spheroids containing active galactic nuclei, finding many masses between that of stellar mass black holes and supermassive black holes.

Graham, Alister W.; Scott, Nicholas, E-mail: AGraham@swin.edu.au [Centre for Astrophysics and Supercomputing, Swinburne University of Technology, Hawthorn, Victoria 3122 (Australia)] [Centre for Astrophysics and Supercomputing, Swinburne University of Technology, Hawthorn, Victoria 3122 (Australia)

2013-02-20T23:59:59.000Z

102

Quantum effects in the diffusion of hydrogen on Ru(0001)  

E-Print Network (OSTI)

An understanding of hydrogen diffusion on metal surfaces is important, not just for its role in heterogeneous catalysis and hydrogen fuel cell technology, but also because it provides model systems where tunneling can be studied under well-defined conditions. Here we report helium spin-echo measurements of the atomic-scale motion of hydrogen on the Ru(0001) surface between 75 and 250 K. Quantum effects are evident at temperatures as high as 200 K, while below 120 K we observe a tunneling-dominated temperature independent jump rate of 1.9$\\times$10$^9$ s$^{-1}$, many orders of magnitude faster than previously seen. Quantum transition state theory calculations based on ab initio path-integral simulations reproduce the temperature dependence of the rate at higher temperatures and predict a crossover to tunneling-dominated diffusion at low temperatures, although the tunneling rate is under-estimated, highlighting the need for future experimental and theoretical studies of hydrogen diffusion on well-defined surfac...

McIntosh, Eliza M; Ellis, John; Michaelides, Angelos; Allison, William

2014-01-01T23:59:59.000Z

103

Studies on the sulfur poisoning of Ru-RuO{sub x}/TiO{sub 2} catalyst for the adsorption and methanation of carbon monoxide  

SciTech Connect

The effects of sulfur poisoning on the chemisorption and on the methanation of carbon monoxide over Ru/TiO{sub 2} catalyst were investigated by FTIR spectroscopy and volumetric gas adsorption measurements. The CS{sub 2} molecules are {eta}` bonded to Ru sites through one of the sulfur atoms and decompose to the constituent elements on thermal activation. Each S atom may deactivate 3 to 10 metal sites even at low coverages, the effect being more pronounced on the chemisorption of hydrogen. The deposited sulfur (and possibly carbon also) sterically hinders the formation of certain multicarbonyl and monocarbonyl species (vCO in 2055-2140 cm{sup -1} region), which otherwise transform to methane via surface methylene groups in the presence of chemisorbed hydrogen and are found to play an important role in the low-temperature methanation activity of the studied catalyst. The Ru-CO species giving rise to lower frequency vibrational bands are affected to a lesser extent. The presence of sulfur also results in the development of some new CO binding states which are weak and are identified with the CO and S coadsorbed at Ru sites of different oxidation states or of varying crystallographic nature. The CO adsorbed in these states is not reactive to hydrogen. 45 refs., 9 figs., 1 tab.

Kamble, V.S.; Londhe, V.P.; Gupta, N.M. [Bhambha Atomic Research centre, Bombay (India)] [and others] [Bhambha Atomic Research centre, Bombay (India); and others

1996-02-01T23:59:59.000Z

104

Masses of Fe-61 and Fe-62  

E-Print Network (OSTI)

. Cerny, Phys. Rev. C 9, 2067 (1974). E. R. F]ynn and J. D. Garrett, Phys. I ett. 42+, 49 (1972). ... less strongly than is the 'Be ground state. " The resolution in the present experiment was suf- ficient to cleanly resolve these two states. For IOO- 80- ~NI(a, Be) Fe e 5o beaN 'Fe s(0) IOO- 64N (IIB (3N)62F 8= IO' Ebeam = 9I MeV 60- V...

Cossairt, J. D.; Tribble, Robert E.; Kenefick, R. A.

1977-01-01T23:59:59.000Z

105

Influence of Electron Doping on Magnetic Order in CeRu2Al10  

SciTech Connect

The effect of electron doping by the substitution of Rh for Ru on unconventional magnetic order in CeRu2Al10 was investigated via neutron powder diffraction. In Ce(Ru1 xRhx)2Al10 with x = 0.05, 0.12, and 0.2, reorientation of the ordered moment from the c-axis as in pure CeRu2Al10 to the a-axis takes place in all samples, while the ordering vector q 0; 1; 0 remains unchanged within this concentration range. The moment reorientation is accompanied by an increase in its size by a factor of 2.4, from = 0.43 B at x = 0 to = 1.06, 1.04, and 1.02 B for x = 0.05, 0.12, and 0.2, respectively. The continuous decrease in the N el temperature T0(TN), despite an abrupt increase in , underlines the strong anisotropy in the exchange interaction in CeRu2Al10 and the fact that this anisotropy is easily suppressed by electron doping. 1.

Kobayashi, Riki [ORNL; Kaneko, Koji [Japan Atomic Energy Agency (JAEA); Saito, Kotaro [Tohoku University, Japan; Mignot, Jean-Michel [Laboratoire Leon Brillouin, France; Andre, Gilles [Laboratoire Leon Brillouin, France; Robert, Julien [Laboratoire Leon Brillouin, France; Wakimoto, Shuichi [Japan Atomic Energy Agency (JAEA); Matsuda, Masaaki [ORNL; Chi, Songxue [ORNL; Haga, Yoshinori [Japan Atomic Energy Agency (JAEA); Matsuda, Tatsuma [Japan Atomic Energy Agency (JAEA); Yamamoto, Etsuji [Japan Atomic Energy Agency (JAEA); Nishioka, Takashi [Kochi University; Tanida, Hiroshi [Hiroshima University, Japan; Sera, Masafumi [Hiroshima University, Japan

2014-01-01T23:59:59.000Z

106

Charge transfer switching in photoexcited Ru(II) porphyrins: A time-resolved resonance Raman and spectroelectrochemical study  

SciTech Connect

The charge transfer (CT) excited states of Ru(II)OEP(Py){sub 2} and Ru(II)TPP(Py){sub 2} (TPP=tetraphenylporphyrin, OEP=octaethylporphyrin, and Py=pyridine) have been investigated by nanosecond time-resolved resonance Raman(TR{sup 3}) spectroscopy. The spectra reveal unexpected differences between the two species. The TR{sup 3} spectrum of [Ru(II)TPP(Py){sub 2}]{sup *} resembles the resonance Raman (RR) spectrum of the RuTPP(Py){sub 2} radical anion. Both spectra show strong enhancement of nontotally symmetric modes, resulting from a Jahn-Teller distortion due to the e{sub g}{sup *} orbital degeneracy. The band frequencies are slightly higher in the CT state than in the radical anion, reflecting the effect of the Ru(II) oxidation. Thus, the TR{sup 3} spectral features support a {sup 3}(d{pi},{pi}{sup *}) excited state assignment, with an electron transferred from Ru(II) to the porphyrin. In contrast, the TR3 spectrum [Ru(II)OEP(Py){sub 2}]{sup *} does not resemble the RR spectra of the Ru(II)OEP radical anion. Rather, it contains totally symmetric modes, at frequencies close to those of Ru(II)OEP(Py){sub 2}. In addition, bound pyridine modes appear at 1208 and 1603 cm{sup -1} in the TR{sup 3} spectrum and they shift upon pyridine perdeuteration. These characteristics imply electron transfer from Ru(II) to bound pyridine, instead of porphyrin, for the CT state of Ru(II)OEP(Py){sub 2}. 38 refs., 11 figs., 4 tabs.

Vitols, S.E.; Kumble, R.; Blackwood, M.E. Jr.; Roman, J.S.; Spiro, T.G. [Princeton Univ., NJ (United States)] [Princeton Univ., NJ (United States)

1996-03-07T23:59:59.000Z

107

The Effects of Oxygen Plasma on the Chemical Composition and Morphology of the Ru Capping Layer of the Extreme Ultraviolet (EUV) Mask Blanks  

E-Print Network (OSTI)

P-5B-03 The effects of oxygen plasma on the chemicalRu) mask surface after oxygen plasma treatment using surfacein the subsurface oxygen concentration, Ru oxidation and

Belau, Leonid

2009-01-01T23:59:59.000Z

108

The influence of microstructure on magnetic properties of nanocrystalline Fe-Pt-Nb-B permanent magnet ribbons  

SciTech Connect

A FePt-based hard-magnetic nanocomposite of exchange spring type was prepared by isothermal annealing of melt-spun Fe{sub 52}Pt{sub 28}Nb{sub 2}B{sub 18} (atomic percent) ribbons. The relationship between microstructure and magnetic properties was investigated by qualitative and quantitative structural analysis based on the x-ray diffraction, transmission electron microscopy, and {sup 57}Fe Moessbauer spectrometry on one hand and the superconducting quantum interference device magnetometry on the other hand. The microstructure consists of L1{sub 0}-FePt hard-magnetic grains (15-45 nm in diameter) dispersed in a soft magnetic medium composed by A1 FePt, Fe{sub 2}B, and boron-rich (FeB)PtNb remainder phase. The ribbons annealed at 700 deg. C for 1 h exhibit promising hard-magnetic properties at room temperature: M{sub r}/M{sub s}=0.69; H{sub c}=820 kA/m and (BH){sub max}=70 kJ/m{sup 3}. Strong exchange coupling between hard and soft magnetic phases was demonstrated by a smooth demagnetizing curve and positive {delta}M-peak in the Henkel plot. The magnetic properties measured from 5 to 750 K reveals that the hard characteristics remains rather stable up to 550 K, indicating a good prospect for the use of these permanent magnets in a wide temperature range.

Randrianantoandro, N.; Greneche, J. M. [Laboratoire de Physique de l'Etat Condense, UMR CNRS 6087, Universite du Maine, 72085 Le Mans cedex 9 (France); Crisan, A. D. [Laboratoire de Physique de l'Etat Condense, UMR CNRS 6087, Universite du Maine, 72085 Le Mans cedex 9 (France); National Institute for Materials Physics, P.O. Box MG-7, 76900 Bucharest (Romania); Crisan, O. [National Institute for Materials Physics, P.O. Box MG-7, 76900 Bucharest (Romania); Marcin, J.; Kovac, J.; Hanko, J.; Skorvanek, I. [Institute of Experimental Physics, Slovak Academy of Sciences, 043 53 Kosice (Slovakia); Svec, P. [Institute of Physics, SAS, Dubravska cesta 9, 84228 Bratislava (Slovakia); Chrobak, A. [August Chelkowski Institute of Physics, University of Silesia, 40-007 Katowice (Poland)

2010-11-15T23:59:59.000Z

109

Exploring the structure and chemical activity of 2-D gold islands on graphene moire/Ru(0001)  

E-Print Network (OSTI)

Exploring the structure and chemical activity of 2-D gold islands on graphene moire/Ru(0001) Ye Xu May 2011 DOI: 10.1039/c1fd00030f Au deposited on Ru(0001)-supported extended, continuous graphene. These Au islands conform to the corrugation of the underlying graphene and display commensurate moire

Goodman, Wayne

110

Nitroxide-Labeled Ru(II) Polypyridyl Complexes as EPR Probes of Organized Systems. 3. Characterization of Starburst Dendrimers and Comparison to Photophysical Measurements  

E-Print Network (OSTI)

Nitroxide-Labeled Ru(II) Polypyridyl Complexes as EPR Probes of Organized Systems. 3- links, RuPT and RuPC8T, respectively, have been utilized as EPR probes to monitor the binding). Analysis of the EPR signals by spectral computation provided structural and dynamic parameters

Turro, Claudia

111

Charged pion production in $^{96}_{44}$Ru+$^{96}_{44}$Ru collisions at 400A and 1528A MeV  

E-Print Network (OSTI)

We present transverse momentum and rapidity spectra of charged pions in central Ru + Ru collisions at 400$A$ and 1528$A$ MeV. The data exhibit enhanced production at low transverse momenta compared to the expectations from the thermal model that includes the decay of $\\Delta(1232)$-resonances and thermal pions. Modification of the $\\Delta$-spectral function and the Coulomb interaction are necessary to describe the detailed shape of the transverse momentum spectra. Within the framework of the thermal model, the freeze-out radii of pions are similar at both beam energies. The IQMD model reproduces the shapes of the transverse momentum and rapidity spectra of pions, but the predicted absolute yields are larger than in the measurements, especially at lower beam energy.

B. Hong et al

2005-01-23T23:59:59.000Z

112

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

113

Control of silicidation in HfO2/Si,,100... interfaces Deok-Yong Cho, Kee-Shik Park, B.-H. Choi,a  

E-Print Network (OSTI)

like nitrogen.6,7 Among these, Hf-silicide is probably most detrimental since it is metallic and degrades the capacitor performance. Metal- lic Hf-silicide formation has been reported in the interfaceControl of silicidation in HfO2/Si,,100... interfaces Deok-Yong Cho, Kee-Shik Park, B.-H. Choi

Oh, Se-Jung

114

Reversal of cisplatin resistance with a BH3 mimetic, (?)-gossypol, in head and neck cancer cells: role of wild-type p53 and Bcl-xL  

Science Journals Connector (OSTI)

...National Center for Biotechnology Information website. Immunohistochemistry Cells were grown...identified by a computational structure-based search as a compound that binds to the BH3 binding...1003-9. 41 Wang X, Wang J, Wong SC, et al. Cytotoxic effect of gossypol...

Joshua A. Bauer; Douglas K. Trask; Bhavna Kumar; Gerrit Los; Jason Castro; Julia Shin-Jung Lee; Jianyong Chen; Shaomeng Wang; Carol R. Bradford; and Thomas E. Carey

2005-07-01T23:59:59.000Z

115

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

116

Learning outcomes MSc in Civil Engineering (Concrete Technology) RU-School of Science and Engineering 1  

E-Print Network (OSTI)

including fracture mechanics, high performance concrete including self-compacting concrete and durabilityLearning outcomes MSc in Civil Engineering (Concrete Technology) RU-School of Science and Engineering 1 MSc in Civil Engineering (Cycle 2, level 4) Specialisation: Concrete Technology MSc in Civil

Karlsson, Brynjar

117

cis,cis-[(bpy)2RuV Catalyzes Water Oxidation Formally  

E-Print Network (OSTI)

at room temperature (eq 1). In green plants, a tetramanganese cluster found in the Oxygen Evolving Complex at each of the Ru(V)-d3 centers were explored and we found that the high-spin states play an important opportunity for understanding how two transition metal centers work in concert to oxidize water. Such atomic

Baik, Mu-Hyun

118

Lattice gas model for CO electrooxidation on Pt-Ru bimetallic surfaces  

SciTech Connect

The authors propose a lattice gas model for the carbon monoxide oxidation on platinum-ruthenium electrode surfaces. The kinetic model includes the main mechanistic bifunctional features as they are generally agreed upon in the literature. The CO stripping voltammetry is solved by dynamic Monte Carlo simulations. For a randomly dispersed alloy of Ru and Pt, the model gives a satisfactory semiquantitative agreement with the experimental CO stripping results of Gasteiger et al. [Journal of Physical Chemistry 1994, 98, 617]. It is shown how the bifunctional mechanism cannot operate if CO is not mobile on the surface, and a simple Tafel-type experiment with a low concentration of active Pt-Ru sites is suggested to check quantitatively the Co mobility rate. On a surface with large Ru islands, the overpotential for CO oxidation increases, and two CO stripping peaks may appear if the CO mobility is sufficiently low. A mean-field model of the system reproduces the DMC results for high CO mobility but breaks down for a system with large Ru islands and a comparatively low CO surface diffusion constant.

Koper, M.T.M.; Jansen, A.P.J.; Santen, R.A. van [Schuit Inst. of Catalysis, Eindhoven (Netherlands). Lab. of Inorganic Chemistry and Catalysis] [Schuit Inst. of Catalysis, Eindhoven (Netherlands). Lab. of Inorganic Chemistry and Catalysis; Lukkien, J.J. [Eindhoven Univ. of Technology (Netherlands). Dept. of Mathematics and Computing Science] [Eindhoven Univ. of Technology (Netherlands). Dept. of Mathematics and Computing Science

1999-07-01T23:59:59.000Z

119

Role of Cs on Hydrodesulfurization Activity of RuS2 Catalysts Supported on a Mesoporous SBA-15 Type Material  

Science Journals Connector (OSTI)

Role of Cs on Hydrodesulfurization Activity of RuS2 Catalysts Supported on a Mesoporous SBA-15 Type Material ... Ruthenium(III) chloride, RuCl3·nH2O (? 41 wt % Ru, from Fluka); cesium hydroxide, CsOH (50 wt % solution, from Aldrich); and cesium chloride, CsCl (99.9% from Aldrich) were employed as ruthenium and cesium precursor salts, respectively. ... These liquid samples were kept in sealed vials and subsequently analyzed by gas chromatography (Shimadzu GC-14B, equipped with a flame ionization detector and a capillary column, TBR-14, coupled to an automatic Shimadzu AOC-20i injector). ...

A. Infantes-Molina; A. Romero-Pe?rez; V. Sa?nchez-Gonza?lez; B. Pawelec; J. L.G. Fierro; A. Jime?nez-Lo?pez; E. Rodri?guez-Castello?n

2011-02-03T23:59:59.000Z

120

Decay Properties of {sup 266}Bh and {sup 262}Db Produced in the {sup 248}Cm+{sup 23}Na Reaction - Further Confirmation of the {sup 278}113 Decay Chain  

SciTech Connect

Decay properties of an isotope {sup 266}Bh and its daughter nucleus {sup 262}Db produced by the {sup 248}Cm({sup 23}Na,5n) reaction were studied by using a gas-filled recoil separator coupled with a position-sensitive semiconductor detector. {sup 266}Bh was clearly identified from the correlation of the known nuclide, {sup 262}Db. The obtained decay properties of {sup 266}Bh and {sup 262}Db are consistent with those observed in the {sup 278}113 chain by RIKEN collaboration, which provided further confirmation of the discovery of {sup 278}113.

Morita, K.; Morimoto, K.; Kaji, D.; Haba, H.; Ozeki, K.; Kudou, Y.; Yoneda, A.; Ichikawa, T.; Katori, K.; Yoshida, A. [RIKEN Nishina Center, RIKEN, Wako, Saitama 351-0198 (Japan); Sato, N. [RIKEN Nishina Center, RIKEN, Wako, Saitama 351-0198 (Japan); Department of Physics, Tohoku University, Aoba-ku, Sendai 980-8578 (Japan); Sumita, T. [RIKEN Nishina Center, RIKEN, Wako, Saitama 351-0198 (Japan); Faculty of Science and Technology, Tokyo University of Science, Noda, Chiba 278-8510 (Japan); Fujimori, Y.; Tokanai, F. [Department of Physics, Yamagata University, Yamagata 990-8560 (Japan); Goto, S. [Center for Instrumental Analysis, Niigata University, Ikarashi, Nishi-ku, Niigata 950-2181 (Japan); Ideguchi, E. [Center for Nuclear Study, University of Tokyo, Wako, Saitama 351-0198 (Japan); Kasamatsu, Y.; Koura, H.; Tsukada, K. [Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195 (Japan); Komori, Y. [Department of Chemistry, Osaka University, Toyonaka, Osaka 560-0043 (Japan)

2010-06-01T23:59:59.000Z

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

Optical spectroscopy of RuC: 1800024000 cm1 Ned F. Lindholm, David A. Hales,a)  

E-Print Network (OSTI)

Optical spectroscopy of RuC: 18000�24000 cm�1 Ned F. Lindholm, David A. Hales,a) Linnea A. Ober. INTRODUCTION Transition metal monocarbide molecules have been the target of much scrutiny in recent years. Gas

Morse, Michael D.

122

Photoemission study of energy-band alignment for RuO{sub x}/HfO{sub 2}/Si system  

SciTech Connect

Conductive oxides RuO{sub x} as alternative electrode on high-{kappa} HfO{sub 2} gate dielectric have been fabricated by ultrahigh-vacuum sputtering and subsequently oxidized using oxygen plasma. The energy-band alignment for the RuO{sub x}/HfO{sub 2}/Si system and the oxidation-state dependence of barrier height for RuO{sub x} contacting to HfO{sub 2} dielectrics has been analyzed by x-ray photoemission spectroscopy. The valence- and conduction-band offsets of HfO{sub 2}/Si are determined to be 3.05{+-}0.1 and 1.48{+-}0.1 eV, respectively. The barrier heights for the RuO{sub x} contacting to HfO{sub 2} are oxidation-state dependent, in the range of 1.95-2.73 eV.

Li, Q.; Wang, S.J.; Li, K.B.; Huan, A.C.H.; Chai, J.W.; Pan, J.S.; Ong, C.K. [Department of Physics, National University of Singapore, Singapore 117542 (Singapore); Institute of Materials Research and Engineering, 3 Research Link, Singapore 117602 (Singapore); Data Storage Institute, DSI Building, 5 Engineering Drive 1, Singapore 117608 (Singapore); Institute of Materials Research and Engineering, 3 Research Link, Singapore 117602, Singapore and Department of Physics, National University of Singapore, Singapore 117542 (Singapore); Institute of Materials Research and Engineering, 3 Research Link, Singapore 117602 (Singapore); Department of Physics, National University of Singapore, Singapore 117542 (Singapore)

2004-12-20T23:59:59.000Z

123

Removal of 106Ru traces from NH4NO3 effluent generated during recycling of sintered depleted uranium fuel pellets  

Science Journals Connector (OSTI)

Feasibility of using fixed bed column of conventional ion exchangers/sorbent and chemical precipitation based processes have been examined for the effective removal of the very low levels of 106Ru activity from N...

D. Banerjee; M. A. Rao; S. Chinnaesakki…

2011-11-01T23:59:59.000Z

124

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

125

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

126

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

127

Enhanced oxygen evolution activity of IrO2 and RuO2 (100) surfaces  

SciTech Connect

The activities of the oxygen evolution reaction (OER) on IrO2 and RuO2 catalysts are among the highest known to date. However, the intrinsic OER activities of surfaces with defined crystallographic orientations are not well established experimentally. Here we report that the (100) surface of IrO2 and RuO2 is more active than the (110) surface that has been traditionally explored by density functional theory studies. The relation between the OER activity and density of coordinatively undersaturated metal sites exposed on each rutile crystallographic facet is discussed. The surface-orientation dependent activities can guide the design of high-surface-area catalysts with increased activity for electrolyzers, metal-air batteries, and photoelectrochemical water splitting applications.

Stoerzinger, Kelsey [Massachusetts Institute of Technology (MIT)] [Massachusetts Institute of Technology (MIT); Qiao, Liang [ORNL] [ORNL; Biegalski, Michael D [ORNL] [ORNL; Christen, Hans M [ORNL] [ORNL; Shao-Horn, Yang [Massachusetts Institute of Technology (MIT)] [Massachusetts Institute of Technology (MIT)

2014-01-01T23:59:59.000Z

128

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

129

RECORD OF CATEGORICAL EXCLUSION DETERMINATION Project ID No. BC-MM-1029, BH-MM-1030, BM-MM-1031, WH-MM-1032  

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

1029, BH-MM-1030, BM-MM-1031, WH-MM-1032 1029, BH-MM-1030, BM-MM-1031, WH-MM-1032 Title: Install Power Metering for SPR Site Buildings Description: Subcontractor shall provide all labor, tools, materials, equipment, and supervision required to install power metering at the four SPR sites. The meters will monitor energy consumption at the SPR site control, administrative, and maintenance buildings. Regulatory Requirements: NEPA Implementing Procedures (10 CFR 1021) 10 CFR 1021.410 (Application of Categorical Exclusions) (a) The actions listed in Appendices A and B of Subpart D are classes of actions that DOE has determined do not individually or cumulatively have a significant effect on the human environment (categorical exclusions). (b) To find that a proposal is categorically excluded, DOE shall determine the following:

130

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

131

High-spin structure and multiphonon {gamma} vibrations in very neutron-rich {sup 114}Ru  

SciTech Connect

High-spin levels of the neutron-rich {sup 114}Ru have been investigated by measuring the prompt {gamma} rays in the spontaneous fission of {sup 252}Cf. The ground-state band and one-phonon {gamma}-vibrational band have been extended up to 14{sup +} and 9{sup +}, respectively. Two levels are proposed as the members of a two-phonon {gamma}-vibrational band. A back bending (band crossing) has been observed in the ground-state band at ({h_bar}/2{pi}){omega}{approx_equal} 0.40 MeV. Using the triaxial deformation parameters, the cranked shell model calculations indicate that this back bending in {sup 114}Ru should originate from the alignment of a pair of h{sub 11/2} neutrons. Triaxial projected shell model calculations for the {gamma}-vibrational band structures of {sup 114}Ru are in good agreement with the experimental data. However, when using the oblate deformation parameters, both of the above-calculated results are not in agreement with the experimental data.

Yeoh, E. Y.; Wang, J. G.; Ding, H. B.; Gu, L.; Xu, Q.; Xiao, Z. G. [Department of Physics, Tsinghua University, Beijing 100084 (China); Zhu, S. J. [Department of Physics, Tsinghua University, Beijing 100084 (China); Department of Physics, Vanderbilt University, Nashville, Tennessee 37235 (United States); Hamilton, J. H.; Li, K.; Ramayya, A. V.; Hwang, J. K. [Department of Physics, Vanderbilt University, Nashville, Tennessee 37235 (United States); Liu, Y. X. [School of Science, Huzhou Teachers College, Huzhou 313000 (China); Liu, S. H. [Department of Physics, Vanderbilt University, Nashville, Tennessee 37235 (United States); UNIRIB/Oak Ridge Associated Universities, Oak Ridge, Tennessee 37831 (United States); Sun, Y. [Department of Physics, Shanghai Jiao Tong University, Shanghai 200240 (China); Sheikh, J. A.; Bhat, G. H. [Department of Physics, University of Kashmir, Srinagar 190 006 (India); Luo, Y. X. [Department of Physics, Vanderbilt University, Nashville, Tennessee 37235 (United States); Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States); Rasmussen, J. O.; Lee, I. Y. [Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States); Ma, W. C. [Department of Physics, Mississippi State University, Mississippi State, Mississippi 39762 (United States)

2011-05-15T23:59:59.000Z

132

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

SciTech Connect

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

133

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

SciTech Connect

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

134

Manipulating Magnetism: Ru-2(5+) Paddlewheels Devoid of Axial Interactions  

SciTech Connect

Variable-temperature magnetic and structural data of two pairs of diruthenium isomers, one pair having an axial ligand and the formula Ru-2(DArF)(4)Cl (where DArF is the anion of a diarylformamidine isomer and Ar = p-anisyl or m-anisyl) and the other one being essentially identical but devoid of axial ligands and having the formula [Ru-2(DArF)(4)]BF4, show that the axial ligand has a significant effect on the electronic structure of the diruthenium unit. Variable temperature crystallographic and magnetic data as well as density functional theory calculations unequivocally demonstrate the occurrence of pi interactions between the p orbitals of the chlorine ligand and the pi* orbitals in the Ru-2(5+) units. The magnetic and structural data are consistent with the existence of combined ligand sigma/metal sigma and ligand p pi/metal-d pi interactions. Electron paramagnetic resonance data show unambiguously that the unpaired electrons are in metal-based molecular orbitals.

Chiarella, Gina M [Texas A& M University; Cotton, F. A. [Texas A& M University; Murillo, Carlos A [Texas A& M University; Ventura, Karen [University of Texas at El Paso; Vilagran, Dino [University of Texas at El Paso; Wang, Xiaoping [ORNL

2014-01-01T23:59:59.000Z

135

CALIBRATING STELLAR VELOCITY DISPERSIONS BASED ON SPATIALLY RESOLVED H-BAND SPECTRA FOR IMPROVING THE M{sub BH}-{sigma}{sub *} RELATION  

SciTech Connect

To calibrate stellar velocity dispersion measurements from optical and near-IR stellar lines, and to improve the black hole mass (M{sub BH})-stellar velocity dispersion ({sigma}{sub *}) relation, we measure {sigma}{sub *} based on high-quality H-band spectra for a sample of 31 nearby galaxies, for which dynamical M{sub BH} is available in the literature. By comparing velocity dispersions measured from stellar lines in the H-band with those measured from optical stellar lines, we find no significant difference, suggesting that optical and near-IR stellar lines represent the same kinematics and that dust effect is negligible for early-type galaxies. Based on the spatially resolved rotation and velocity dispersion measurements along the major axis of each galaxy, we find that a rotating stellar disk is present for 80% of galaxies in the sample. For galaxies with a rotation component, {sigma}{sub *} measured from a single aperture spectrum can vary by up to {approx}20%, depending on the size of the adopted extraction aperture. To correct for the rotational broadening, we derive luminosity-weighted {sigma}{sub *} within the effective radius of each galaxy, providing uniformly measured velocity dispersions to improve the M{sub BH}-{sigma}{sub *} relation.

Kang, Wol-Rang; Woo, Jong-Hak; Park, Daeseong [Astronomy Program, Department of Physics and Astronomy, Seoul National University, 1 Gwanak-ro Gwanak-gu, Seoul, 151-742 (Korea, Republic of)] [Astronomy Program, Department of Physics and Astronomy, Seoul National University, 1 Gwanak-ro Gwanak-gu, Seoul, 151-742 (Korea, Republic of); Schulze, Andreas [Kavli Institute for Astronomy and Astrophysics, Peking University, 100871 Beijing (China)] [Kavli Institute for Astronomy and Astrophysics, Peking University, 100871 Beijing (China); Riechers, Dominik A. [Astronomy Department, Cornell University, 220 Space Science Building, Ithaca, NY 14853 (United States)] [Astronomy Department, Cornell University, 220 Space Science Building, Ithaca, NY 14853 (United States); Kim, Sang Chul [Korea Astronomy and Space Science Institute, Daejeon 305-348 (Korea, Republic of)] [Korea Astronomy and Space Science Institute, Daejeon 305-348 (Korea, Republic of); Smolcic, Vernesa, E-mail: woo@astro.snu.ac.kr [Physics Department, University of Zagreb, Bijenicka cesta 32, 10002 Zagreb (Croatia)] [Physics Department, University of Zagreb, Bijenicka cesta 32, 10002 Zagreb (Croatia)

2013-04-10T23:59:59.000Z

136

Thermal response of Ru electrodes in contact with SiO{sub 2} and Hf-based high-k gate dielectrics  

SciTech Connect

A systematic experimental evaluation of the thermal stability of Ru metal gate electrodes in direct contact with SiO{sub 2} and Hf-based dielectric layers was performed and correlated with electrical device measurements. The distinctly different interfacial reactions in the Ru/SiO{sub 2}, Ru/HfO{sub 2}, and Ru/HfSiO{sub x} film systems were observed through cross-sectional high-resolution transmission electron microscopy, high angle annular dark field scanning transmission electron microscopy with electron-energy-loss spectra, and energy dispersive x-ray spectra analysis. Ru interacted with SiO{sub 2}, but remained stable on HfO{sub 2} at 1000 deg. C. The onset of Ru/SiO{sub 2} interfacial interactions is identified via silicon substrate pitting possibly from Ru diffusion into the dielectric in samples exposed to a 900 deg. C/10-s anneal. The dependence of capacitor device degradation with decreasing SiO{sub 2} thickness suggests Ru diffuses through SiO{sub 2}, followed by an abrupt, rapid, nonuniform interaction of ruthenium silicide as Ru contacts the Si substrate. Local interdiffusion detected on Ru/HfSiO{sub x} samples may be due to phase separation of HfSiO{sub x} into HfO{sub 2} grains within a SiO{sub 2} matrix, suggesting that SiO{sub 2} provides a diffusion pathway for Ru. Detailed evidence consistent with a dual reaction mechanism for the Ru/SiO{sub 2} system at 1000 deg. C is presented.

Wen, H.-C.; Lysaght, P.; Alshareef, H.N.; Huffman, C.; Harris, H.R.; Choi, K.; Senzaki, Y.; Luan, H.; Majhi, P.; Lee, B.H.; Campin, M. J.; Foran, B.; Lian, G.D.; Kwong, D.-L. [SEMATECH, 2706 Montopolis Drive, Austin, Texas 78741(United States); University of Texas at Austin, Pickle Research Campus-Microelectronics and Engineering Research (PRC-MER) Building 2.606A/R9950, Austin, Texas 78712 (United States); SEMATECH, 2706 Montopolis Drive, Austin, Texas 78741 (United States); Advanced Technology Development Facility (ATDF) Inc., 2706 Montopolis Drive, Austin, Texas 78741 (United States); University of Texas at Austin, Pickle Research Campus-Microelectronics and Engineering Research (PRC-MER) Building 2.606A/R9950, Austin, Texas 78712 (United States)

2005-08-15T23:59:59.000Z

137

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

138

Measurements and calculations of metastable level lifetimes in Fe X, Fe XI, Fe XII, Fe XIII, and Fe XIV  

E-Print Network (OSTI)

Lifetimes of metastable levels in the ground term of Fe ions within the 3s(2)3p(k), k=1-5, isoelectronic sequences have been measured. These measurements were performed utilizing ions that were selected by mass to charge ratio while transported from...

Moehs, D. P.; Bhatti, M. I.; Church, David A.

2001-01-01T23:59:59.000Z

139

Features of the band structure and conduction mechanisms in the n-HfNiSn semiconductor heavily doped with Ru  

SciTech Connect

The crystal and electronic structure and energy and kinetic properties of the n-HfNiSn semiconductor heavily doped with a Ru acceptor impurity are investigated in the temperature and Ru concentration ranges T = 80–400 K and N{sub A}{sup Ru} ? 9.5 × 10{sup 19}?5.7 × 10{sup 20} cm{sup ?3} (x = 0–0.03), respectively. The mechanism of structural-defect generation is established, which changes the band gap and degree of compensation of the semiconductor and consists in the simultaneous concentration reduction and elimination of donor structural defects by means of the displacement of ?1% of Ni atoms from the Hf (4a) positions, the generation of acceptor structural defects upon the substitution of Ru atoms for Ni atoms in the 4c positions, and the generation of donor defects in the form of vacancies in the Sn (4b) positions. The calculated electronic structure of HfNi{sub 1?x}Ru{sub x}Sn is consistent with the experiment. The results obtained are discussed within the Shklovsky-Efros model for a heavily doped and compensated semiconductor.

Romaka, V. A., E-mail: vromaka@polynet.lviv.ua [National Academy of Sciences of Ukraine, Pidstrygach Institute for Applied Problems in Mechanics and Mathematics (Ukraine); Rogl, P. [Universität Wien, Institut für Physikalische Chemie (Austria); Romaka, V. V. [National University Lvivska Politekhnika (Ukraine); Stadnyk, Yu. V. [Ivan Franko National University of Lviv (Ukraine); Korzh, R. O.; Krayovskyy, V. Ya. [National University Lvivska Politekhnika (Ukraine); Horyn, A. M. [Ivan Franko National University of Lviv (Ukraine)

2014-12-15T23:59:59.000Z

140

Electronic and elastic properties of Sr2RuO4 with pressure effects by first principles calculation  

Science Journals Connector (OSTI)

Abstract In this work, electronic and elastic properties along with the pressure effects of the unconventional superconductor Sr2RuO4 are investigated by first principles calculation. Band structure calculation reveals that Sr2RuO4 is a weak metal. The characteristic of the band structure has also been analyzed. The calculated elastic constants reproduce the experimental data well. Analyses disclose that Sr2RuO4 is mechanically stable but anisotropic. The calculated Debye temperature 475.0 K is in good agreement with the experimental results. Surveys of the pressure effect on the lattice constants reveal that the a axis is less compressible than the c axis, as found in the experiment. Further investigations illustrate that Sr2RuO4 is mechanically stable up to 50 GPa till the elastic constant C44 fails to meet the mechanical stability criterion. The pressure-dependent elastic parameters are also investigated to know their behaviors under pressure. In addition, the bonding properties of Sr2RuO4 at 0 GPa and 50 GPa are analyzed to explain its elastic behavior under pressure.

Xi-Ping Hao; Hong-Ling Cui; Zhen-Long Lv; Guang-Fu Ji

2014-01-01T23:59:59.000Z

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141

Ultrafast Magnetization Dynamics of SrRuO3 Thin Films  

SciTech Connect

Itinerant ferromagnet SrRuO3 has drawn interest from physicists due to its unusual transport and magnetic properties as well as from engineers due to its low resistivity and good lattice-matching to other oxide materials. The exact electronic structure remains a mystery, as well as details of the interactions between magnetic and electron transport properties. This thesis describes the use of time-resolved magneto-optical Kerr spectroscopy to study the ferromagnetic resonance of SrRuO3 thin films, where the ferromagnetic resonance is initiated by a sudden change in the easy axis direction in response to a pump pulse. The rotation of the easy axis is induced by laser heating, taking advantage of a temperature-dependent easy axis direction in SrRuO3 thin films. By measuring the change in temperature of the magnetic system in response to the laser pulse, we find that the specific heat is dominated by magnons up to unusually high temperature, ~;;100 K, and thermal diffusion is limited by a boundary resistance between the film and the substrate that is not consistent with standard phonon reflection and scattering models. We observe a high FMR frequency, 250 GHz, and large Gilbert damping parameter, alpha ~;; 1, consistent with strong spin-orbit coupling. We observe a time-dependent change in the easy axis direction on a ps time-scale, and we find that parameters associated with the change in easy axis, as well as the damping parameter, have a non-monotonic temperature dependence similar to that observed in anomalous Hall measurements.

Langner, Matthew C

2009-05-19T23:59:59.000Z

142

Microsoft Word - ferromagnetism bh  

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

Revealing the Nature of Emergent Ferromagnetism at an Oxide Revealing the Nature of Emergent Ferromagnetism at an Oxide Heterointerface A fundamental feature of emergent materials such as oxide heterostructures is the interplay between charge, spin, orbital, and lattice degrees of freedom that induces a staggering vari- ety of exotic phenomena including colossal magnetoresistance, metal-insulator transition, magnetoelasticity, and others. Moreover, each degree of freedom is tunable via doping, which results in changes of valence state and local structure and, therefore, variations of the ordered phase. This remarkable tunability motivates extensive and ongoing research on heterostructures in order to investigate new phenomena [1-3] and exploit them in device applications [4, 5]. In oxide heterostructures, control mechanisms other than doping are

143

Microsoft Word - Sarangi bh  

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

MSIP of Korea through NRF (2013R1A1A2062737) and an ALCA project from JST from MEXT of Japan. Stanford Synchrotron Radiation Lightsource (SSRL) operations are funded by the U.S....

144

Reactions of Bis(tricarbido)mercurials and Dimetallaoctatetraynes with [Ru(CO)2(PPh3)3]:? Scission of a Csp?Csp Single Bond  

Science Journals Connector (OSTI)

The reactions of [L(CO)2WC6W(CO)2L] (L = HB(pz)3, HB(pz‘)3; pz = pyrazol-1-yl, pz‘ = dimethylpyrazol-1-yl) with [Ru(CO)2(PPh3)3] provide the bis(tricarbido) complexes [(Ph3P)2(CO)2Ru{C3W(CO)2L}2] via the adduct [(Ph3P)2(CO)2Ru{?2-L(CO)2WC6W(CO)2L}], which,...The reactions of [L(CO)2WC6W(CO)2L] (L = HB(pz)3, HB(pz‘)3; pz = pyrazol-1-yl, pz‘ = dimethylpyrazol-1-yl) with [Ru(CO)2(PPh3)3] provide the bis(tricarbido) complexes [(Ph3P)2(CO)2Ru{C3W(CO)2L}2] via the adduct [(Ph3P)2(CO)2Ru{?2- L(CO)2WC6W(CO)2L}], which, along with [(Ph3P)2(CO)2Ru{C3W(CO)2L}{HgC3W(CO)2L}], is observed as an intermediate in the reactions of [Ru(CO)2(PPh3)3] with [Hg{C3W(CO)2L}2] that also ultimately provide the bis(carbido) complex.

Rian D. Dewhurst; Anthony F. Hill; A. David Rae; Anthony C. Willis

2005-08-24T23:59:59.000Z

145

Crystal structure and magnetic properties of Pr- and Ti-substituted La{sub 2}RuO{sub 5}  

SciTech Connect

Highlights: • Synthesis of polycrystalline Pr and Ti co-substituted La{sub 2}RuO{sub 5} with soft chemistry. • Investigation of structure–property relationship of the dimerization transition. • Additive behavior of structural changes caused by either Pr or Ti substitution. • Additive behavior of ht-phase paramagnetism of Pr and Ti substitution. • Additive influence of Pr and Ti substitution on the dimerization transition. - Abstract: Polycrystalline samples of Pr- and Ti-substituted La{sub 2}RuO{sub 5} were prepared applying a soft-chemistry route based on the thermal decomposition of citrate-stabilized precursors. The simultaneous substitution on the La-sites by Pr and on the Ru-sites by Ti results in samples of the composition La{sub 2?x}Pr{sub x}Ru{sub 1?y}Ti{sub y}O{sub 5} with 0 ? x ? 0.75 and 0 ? y ? 0.4. The crystal structures of these compounds were analyzed by Rietveld refinement of powder X-ray diffraction patterns. For pure La{sub 2}RuO{sub 5} a structural transition from a monoclinic room-temperature modification to a triclinic low-temperature structure was found at 161 K. This structural change is linked to a low-temperature long-range ordered spin-singlet ground state formed by Ru{sup 4+} spin-moments. Both the structural transition and the formation of the singlet ground state become progressively suppressed with higher Ti contents, while the Pr substitution has only a minor influence on the dimerization. The behavior of the Curie–Weiss temperatures can be explained assuming two almost independent magnetic sublattices corresponding to the ruthenium and the rare-earth ions, respectively. For all investigated properties, i.e. crystal structure, magnetic susceptibilities, and dimerization temperature T{sub d}, a completely additive behavior of the effects of Pr-substitution and Ti-substitution is observed.

Riegg, S., E-mail: stefan.riegg@physik.uni-augsburg.de [Experimental Physics V, Center for Electronic Correlations and Magnetism, University of Augsburg, D-86159 Augsburg (Germany); Loidl, A. [Experimental Physics V, Center for Electronic Correlations and Magnetism, University of Augsburg, D-86159 Augsburg (Germany); Reller, A. [Resource Strategy, University of Augsburg, D-86159 Augsburg (Germany); Ebbinghaus, S.G. [Solid State Chemistry, Martin-Luther University Halle-Wittenberg, D-06099 Halle (Germany)

2013-11-15T23:59:59.000Z

146

Time-Resolved XAFS Spectroscopic Studies of B-H and N-H Oxidative Addition to Transition Metal Catalysts Relevant to Hydrogen Storage  

SciTech Connect

Successful catalytic dehydrogenation of aminoborane, H3NBH3, prompted questions as to the potential role of N-H oxidative addition in the mechanisms of these processes. N-H oxidative addition reactions are rare, and in all cases appear to involve initial dative bonding to the metal by the amine lone pairs followed by transfer of a proton to the basic metal. Aminoborane and its trimethylborane derivative block this mechanism and, in principle, should permit authentic N-H oxidative attrition to occur. Extensive experimental work failed to confirm this hypothesis. In all cases either B-H complexation or oxidative addition of solvent C-H bonds dominate the chemistry.

Bitterwolf, Thomas E. [University of Idaho

2014-12-09T23:59:59.000Z

147

Morphology of Carbon Supported Pt?Ru Electrocatalyst and the CO Tolerance of Anodes for PEM Fuel Cells  

Science Journals Connector (OSTI)

Thus, the development of CO-tolerant electrocatalysts is necessary before hydrogen?oxygen PEFCs can be widely applied. ... Figure 3 PEMFC single-cell CO tolerance test of (A) the commercial Pt?Ru/C catalyst, (B) the commercial 20% Pt/C catalyst, and (C) the YZU Pt?Ru/C catalyst under pure H2 (open symbols) and 100 ppm of CO in H2 for 60 min (filled symbols). ... This indicates that there is still a long distance to the development of a practical CO tolerant electrocatalyst. ...

Shawn D. Lin; Ting-Chou Hsiao; Jen-Ray Chang; Andrew S. Lin

1998-12-15T23:59:59.000Z

148

New-Concept CO-Tolerant Anode Catalysts Using a Rh Porphyrin-Deposited PtRu/C  

Science Journals Connector (OSTI)

We tried to counteract this problem using a CO oxidation electrocatalyst. ... In the development of a stationary proton exchange membrane fuel cell (PEMFC), CO in reformed gas remains a severe problem because it dramatically poisons the Pt anodes of PEMFC even at very low concentrations of less than 100 ppm. ... In the CO tolerance of conventional PtRu catalysts, this reaction has a less significant role than electronic effects of Ru on Pt.(39) Electrocatalysts that can oxidize CO at low potentials would be useful for the development of CO-tolerant anode catalysts for reformate gas. ...

Shin-ichi Yamazaki; Masaru Yao; Zyun Siroma; Tsutomu Ioroi; Kazuaki Yasuda

2010-11-16T23:59:59.000Z

149

Photoinduced Water Oxidation by a Tetraruthenium Polyoxometalate Catalyst: Ion-pairing and Primary Processes with Ru(bpy)32+ Photosensitizer  

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Photoinduced Water Oxidation by a Tetraruthenium Polyoxometalate Catalyst: Ion-pairing and Primary Processes with Ru(bpy)32+ Photosensitizer ... Two interrelated issues relevant to this behavior have been examined in detail: (i) the effects of ion pairing between the polyanionic catalyst and the cationic Ru(bpy)32+ sensitizer, and (ii) the kinetics of hole transfer from the oxidized sensitizer to the catalyst. ... This process competes appreciably with the primary photoreaction of the excited sensitizer with the sacrificial oxidant, even in high ionic strength media. ...

Mirco Natali; Michele Orlandi; Serena Berardi; Sebastiano Campagna; Marcella Bonchio; Andrea Sartorel; Franco Scandola

2012-06-11T23:59:59.000Z

150

Spin-gap opening accompanied by a strong magnetoelastic response in the S=1 magnetic dimer system Ba3BiRu2O9  

Science Journals Connector (OSTI)

Neutron diffraction, magnetization, resistivity, and heat-capacity measurements on the 6H-perovskite Ba3BiRu2O9 reveal simultaneous magnetic and structural dimerization driven by strong magnetoelastic coupling. An isostructural but strongly displacive first-order transition on cooling through T*=176 K is associated with a change in the nature of direct Ru–Ru bonds within Ru2O9 face-sharing octahedra. Above T*, Ba3BiRu2O9 is an S=1 magnetic dimer system with intradimer exchange interactions J0/kB=320 K and interdimer exchange interactions J?/kB=?160 K. Below T*, a spin-gapped state emerges with ??220 K. Ab initio calculations confirm antiferromagnetic exchange within dimers, but the transition is not accompanied by long-range magnetic order.

Wojciech Miiller; Maxim Avdeev; Qingdi Zhou; Andrew J. Studer; Brendan J. Kennedy; Gordon J. Kearley; Chris D. Ling

2011-12-15T23:59:59.000Z

151

Thermodynamics of the Magnetite-Ulvöspinel (Fe3O4-Fe2TiO4...  

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

the Magnetite-Ulvöspinel (Fe3O4-Fe2TiO4) Solid Solution. Thermodynamics of the Magnetite-Ulvöspinel (Fe3O4-Fe2TiO4) Solid Solution. Abstract: The thermodynamics of mixing...

152

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

SciTech Connect

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

153

Coadsorption of hydrogen and ethylene, and carbon monoxide and ethylene on the Ru(001) surface  

SciTech Connect

A detailed investigation of the coadsorption of ethylene with both preadsorbed hydrogen and preadsorbed carbon monoxide on the Ru(001) surface is reported here. Both preadsorbed hydrogen and carbon monoxide reduce the saturation coverage of subsequently chemisorbed ethylene. The coadsorption of hydrogen with ethylene results in detectable hydrogenation of ethylene to ethane below 250 K, whereas no self-hydrogenation of ethylene to ethane is observed. High-resolution electron energy loss spectra show that ethylene coadsorbed with either hydrogen or carbon monoxide decomposes to ethylidyne (CCH/sub 3/) and acetylide (CCH), as it does on the clean surface. Carbon monoxide preadsorption enhances the stability of the ethylidyne such that it decomposes at approximately 420 K, rather than 355 K as on the initially clean Ru(001) surface. Preadsorbed carbon monoxide also reduces the ratio of ethylidyne to acetylide that is formed from ethylene, compared to the ratio observed from an equivalent coverage of ethylene on the clean surface; hydrogen preadsorption, on the other hand, increases this ratio.

Hills, M.M.; Parmeter, J.E.; Weinberg, W.H.

1986-11-12T23:59:59.000Z

154

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,

155

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

156

Hydrogen production by methane steam reforming over Ru supported on Ni–Mg–Al mixed oxides prepared via hydrotalcite route  

Science Journals Connector (OSTI)

Abstract Catalytic performance of Ru/NixMg6?xAl2 800 800 mixed oxides, with x = 2, 4 and 6, x being the molar ratio, towards Methane Steam Reforming, was studied. NixMg6?xAl2 800 oxide, used as support, was prepared via hydrotalcite route. It was thermally stabilized at 800 °C, impregnated with 0.5 wt.% ruthenium using ruthenium (III) nitrosyl nitrate Ru(NO) (NO3)3 precursor and then calcined again at 800 °C under an air flow. Ruthenium impregnation significantly enhanced the reactivity of the oxides in Methane Steam Reforming. In fact, it was found, that even with a low ruthenium content (0.5 wt.%), ruthenium oxide particles are formed but are well dispersed over the surface of the oxide NixMg6?xAl2 800. Ru/Ni6Al2 800 800 showed better catalytic performances, towards Methane Steam Reforming, than ruthenium impregnated on the two other supports. Indeed, nickel content is higher in Ni6Al2 800 than in the other studied supports and therefore the probability of Ni–Ru interaction should be greater and consequently catalytic performances could be improved.

Mira Nawfal; Cédric Gennequin; Madona Labaki; Bilal Nsouli; Antoine Aboukaïs; Edmond Abi-Aad

2014-01-01T23:59:59.000Z

157

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

SciTech Connect

The authors report the chemical influence of cleaning of the Ru capping layer on the extreme ultraviolet (EUV) reflector surface. The cleaning of EUV reflector to remove the contamination particles has two requirements: to prevent corrosion and etching of the reflector surface and to maintain the reflectivity functionality of the reflector after the corrosive cleaning processes. Two main approaches for EUV reflector cleaning, wet chemical treatments [sulfuric acid and hydrogen peroxide mixture (SPM), ozonated water, and ozonated hydrogen peroxide] and dry cleaning (oxygen plasma and UV/ozone treatment), were tested. The changes in surface morphology and roughness were characterized using scanning electron microscopy and atomic force microscopy, while the surface etching and change of oxidation states were probed with x-ray photoelectron spectroscopy. Significant surface oxidation of the Ru capping layer was observed after oxygen plasma and UV/ozone treatment, while the oxidation is unnoticeable after SPM treatment. Based on these surface studies, the authors found that SPM treatment exhibits the minimal corrosive interactions with Ru capping layer. They address the molecular mechanism of corrosive gas and liquid-phase chemical interaction with the surface of Ru capping layer on the EUV reflector.

Belau, Leonid; Park, Jeong Y.; Liang, Ted; Seo, Hyungtak; Somorjai, Gabor A.

2009-04-10T23:59:59.000Z

158

Electronic structure of the Nowotny chimney-ladder silicide Ru{sub 2}Si{sub 3}  

SciTech Connect

We report {ital ab initio} calculations for the electronic structure of the Nowotny chimney-ladder silicide Ru{sub 2}Si{sub 3} in the orthorhombic low-temperature phase. We find Ru{sub 2}Si{sub 3} to be a semiconductor with a direct band gap of about 0.45 eV. Since this gap is a p-d gap, the oscillator strength for a direct transition is expected to be of sizable magnitude. Also, the calculated effective masses of hole and electron states suggest that Ru{sub 2}Si{sub 3} is a very promising material for various applications in semiconductor technology. The electronic structure is controlled by the hybridization of Si p states with Ru d states and shows similarities to the group-IV transition-metal disilicides (CrSi{sub 2}, MoSi{sub 2}, WSi{sub 2}) and to transition-metal-rich silicides. The calculations are based on the density-functional theory in local-density approximation and are performed by means of the full-potential linearized-augmented-plane-wave method. {copyright} {ital 1997} {ital The American Physical Society}

Wolf, W. [Institut fuer Physikalische Chemie der Universitaet Wien, Liechtensteinstrae 22a, A-1090 Wien (Austria)] [Institut fuer Physikalische Chemie der Universitaet Wien, Liechtensteinstrae 22a, A-1090 Wien (Austria); Bihlmayer, G.; Bluegel, S. [Institut fuer Festkoerperforschung, Forschungszentrum Juelich, D-52425 Juelich (Germany)] [Institut fuer Festkoerperforschung, Forschungszentrum Juelich, D-52425 Juelich (Germany)

1997-03-01T23:59:59.000Z

159

Journal of Power Sources 156 (2006) 345354 Development of PtRu-CeO2/C anode electrocatalyst for  

E-Print Network (OSTI)

Journal of Power Sources 156 (2006) 345­354 Development of PtRu-CeO2/C anode electrocatalyst a growing interest in the development of direct methanol fuel cells (DMFCs) because when compared oxidation reac- tion on the anode and the oxygen reduction reaction on the cathode remains as one

Zhao, Tianshou

160

WORLDVIEW THEORY AND THE CONCEPTUALISATION OF SPACE Marc Schfer, Rhodes University, Grahamstown, South Africa, M.Schafer@ru.ac.za  

E-Print Network (OSTI)

, Grahamstown, South Africa, M.Schafer@ru.ac.za Introduction The aim of this paper and presentation is to shareMathematicsin South Africa for example, sees space and shape within a context of social experiences. One and representexperienceswithshape,space,timeand motion, using all available senses" (Republic of South Africa, 1997). This apparent

Spagnolo, Filippo

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161

First-principles study of the role of solvent in the dissociation of water over a Pt-Ru alloy  

Science Journals Connector (OSTI)

Self-consistent gradient-corrected periodic density functional theoretical calculations are used to examine the effects of an aqueous environment on the dissociation of water over a Pt-Ru alloy. This reaction is thought to be one of the rate-limiting steps in oxidative removal of CO from the anode surface of both the direct methanol and reformate fuel cells. The reaction leads to the formation of surface hydroxyl (OH) intermediates that can subsequently oxidize adsorbed CO into CO2. We examine the energetics and mechanism for the dissociation of water over Pt66Ru33(111) in the presence of 23 water molecules (per 615 Å3 unit cell volume) that act as a solution phase and in the absence of solution (vapor phase). The reaction is endothermic by +53 kJ/mol and has an activation barrier of +105 kJ/mol when carried out in the vapor phase, but was found to be much less endothermic (+26 kJ/mol) and has a significantly lower activation barrier (+27 kJ/mol) when carried out in solution. In the vapor phase, the reaction occurs homolytically whereby the dissociation is activated by insertion of a Ru atom into the O-H bond of water. The products formed are adsorbed hydroxyl and hydrogen intermediates. In contrast, in solution, the dissociation occurs via a heterolytic path whereby the solvent molecules are directly involved in activating the O-H bond. The reaction leads to the formation of a hydroxyl intermediate that is bound to the alloy surface and a proton that is released into the solution phase. Ab initio molecular dynamics simulations were performed at 300 K to establish the sequence of elementary steps that can occur. The simulations show that water dissociates over Ru and that the hydroxyl intermediate that first forms over Ru rapidly diffuses along the metal surface, migrating over Pt as well as Ru sites. We believe that this evidence shows that diffusion occurs as the result of the proton transfer between the coadsorbed water and hydroxyl intermediates in an aqueous environment. This could have important consequences for CO oxidation in PEM fuel cells whereby the diffusion of CO and/or OH intermediates is important for the reaction at the edge of the Pt/Ru boundaries. The work reported herein applies at open-circuit potentials, but may also be appropriate at other potentials as well.

Sanket K. Desai and Matthew Neurock

2003-08-29T23:59:59.000Z

162

Chemical reactions of water molecules on Ru(0001) induced by selective excitation of vibrational modes  

SciTech Connect

Tunneling electrons in a scanning tunneling microscope were used to excite specific vibrational quantum states of adsorbed water and hydroxyl molecules on a Ru(0 0 0 1) surface. The excited molecules relaxed by transfer of energy to lower energy modes, resulting in diffusion, dissociation, desorption, and surface-tip transfer processes. Diffusion of H{sub 2}O molecules could be induced by excitation of the O-H stretch vibration mode at 445 meV. Isolated molecules required excitation of one single quantum while molecules bonded to a C atom required at least two quanta. Dissociation of single H{sub 2}O molecules into H and OH required electron energies of 1 eV or higher while dissociation of OH required at least 2 eV electrons. In contrast, water molecules forming part of a cluster could be dissociated with electron energies of 0.5 eV.

Mugarza, Aitor; Shimizu, Tomoko K.; Ogletree, D. Frank; Salmeron, Miquel

2009-05-07T23:59:59.000Z

163

Two neutrino double ? decay of 100Mo to the 2+ excited state of 100Ru  

Science Journals Connector (OSTI)

The two neutrino double ? decay of 100Mo for 0+?2+ transition is studied in the projected Hartree-Fock-Bogoliubov framework. In our earlier work, the reliability of the intrinsic wave functions has been established for 100Mo and 100Ru by obtaining an overall agreement between the available experimental data and theoretically calculated results for yrast spectra, reduced transition probabilities B(E2:0+?2+), quadrupole moments Q(2+), gyromagnetic factors g(2+), and double Gamow-Teller matrix element for 0+?0+ transition. In the present work, the half-life for 0+?2+ transition T1/22?(0+?2+) has been calculated using the same set of intrinsic wave functions.

K. Chaturvedi, B. M. Dixit, P. K. Rath, and P. K. Raina

2003-06-27T23:59:59.000Z

164

E-Print Network 3.0 - ansys fe procedure Sample Search Results  

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

FE-2,FE-4,FE- 6 Myco Procedure Review 18:45-19:10 . Daily Planning... of - connector on - pump behind panel 139 06:00-06:10 FE-2,FE-3,FE- 4, FE-5,FE-6 Morning Inspection ......

165

JOURNAL OF MAGNETIC RESONANCE 28,383-390 (1977) High-Resolution `H and llB NMR Studiesof 1,2-and 1,7-B&H,,  

E-Print Network (OSTI)

,7-B&H,, A. R. GARBER,G. M. BODNER,AND L. J. TODD Department of Chemistry,' Indiana University, Bloomington, Indiana 47401 AND A. R. SIEDLE~ Inorganic Chemistry Section, National Bureau of Standards by butyllithium and quenching by slow addition of D,O. The deuterated carboranes were purified by sublimation

Bodner, George M.

166

The Effects of Oxygen Plasma on the Chemical Composition and Morphology of the Ru Capping Layer of the Extreme Ultraviolet (EUV) Mask Blanks  

SciTech Connect

Contamination removal from extreme ultraviolet (EUV) mask surfaces is one of the most important aspects to improve reliability for the next generation of EUV lithography. We report chemical and morphological changes of the ruthenium (Ru) mask surface after oxygen plasma treatment using surface sensitive analytical methods: X-ray photoelectron spectroscopy (XPS), atomic force microscopy (AFM) and transmission electron microscopy (TEM). Chemical analysis of the EUV masks shows an increase in the subsurface oxygen concentration, Ru oxidation and surface roughness. XPS spectra at various photoelectron takeoff angles suggest that the EUV mask surface was covered with chemisorbed oxygen after oxygen plasma treatment. It is proposed that the Kirkendall effect is the most plausible mechanism that explains the Ru surface oxidation. The etching rate of the Ru capping layer by oxygen plasma was estimated to be 1.5 {+-} 0.2 {angstrom}/min, based on TEM cross sectional analysis.

Belau, Leonid; Park, Jeong Y.; Liang, Ted; Somorjai, Gabor A.

2008-06-07T23:59:59.000Z

167

The discovery of [Ru(NH3)5N2]2+: A case of serendipity and the scientific method  

Science Journals Connector (OSTI)

In this paper the author provides a personal account of the events leading up to the realization [Ru9NH3)5N2]2+ is a real species.

Caesar V. Senoff

1990-01-01T23:59:59.000Z

168

Fe and N diffusion in nitrogen-rich FeN measured using neutron reflectometry  

Science Journals Connector (OSTI)

Grazing incidence neutron reflectometry provides an opportunity to measure the depth ... interfaces can also be measured. In addition, neutrons have contrast among the isotopes, making it...57FeN]10 and [FeN/Fe15

Mukul Gupta; A. Gupta; A. Wildes; T. Gutberlet

2008-11-01T23:59:59.000Z

169

CO Coverage/Oxidation Correlated with PtRu Electroscatalyst Particle Morphology in 0.3 M Methanol by In Situ XAS  

SciTech Connect

In situ X-ray absorption spectroscopy (XAS) measurements, including both X-ray absorption near edge spectroscopy (XANES) and extended X-ray absorption fine structure (EXAFS) at the Pt L{sub 3} and Ru K edges, were carried out on three different carbon-supported PtRu electrocatalysts in an electrochemical cell in 1 M HClO{sub 4} with 0.3 M methanol. The CO and OH adsorbate coverage on Pt and Ru were determined as a function of the applied potential via the novel delta XANES technique, and the particle morphology was determined from the EXAFS and a modeling technique. Both the bifunctional and direct CO oxidation mechanisms, the latter enhanced by electronic ligand effects, were evident for all three electrocatalysts; however, the dominant mechanism depended critically on the particle size and morphology. Both the Ru island size and overall cluster size had a very large effect on the CO oxidation mechanism and activation of water, with the bifunctional mechanism dominating for more monodispersed Ru islands, and the direct surface ligand effect dominating in the presence of larger Ru islands.

Scott,F.; Mukerjee, S.; Ramaker, D.

2007-01-01T23:59:59.000Z

170

CO Coverage/Oxidation Correlated with PtRu Electrocatalyst Particle Morphology in 0.3 M Methanol by in situ XAS  

SciTech Connect

In situ X-ray absorption spectroscopy (XAS) measurements, including both X-ray absorption near edge spectroscopy (XANES) and extended X-ray absorption fine structure (EXAFS) at the Pt L{sub 3} and Ru K edges, were carried out on three different carbon-supported PtRu electrocatalysts in an electrochemical cell in 1 M HClO{sub 4} with 0.3 M methanol. The CO and OH adsorbate coverage on Pt and Ru were determined as a function of the applied potential via the novel delta XANES technique, and the particle morphology was determined from the EXAFS and a modeling technique. Both the bifunctional and direct CO oxidation mechanisms, the latter enhanced by electronic ligand effects, were evident for all three electrocatalysts; however, the dominant mechanism depended critically on the particle size and morphology. Both the Ru island size and overall cluster size had a very large effect on the CO oxidation mechanism and activation of water, with the bifunctional mechanism dominating for more monodispersed Ru islands, and the direct surface ligand effect dominating in the presence of larger Ru islands.

Scott, F.; Mukerjee, S; Ramaker, D

2007-01-01T23:59:59.000Z

171

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

SciTech Connect

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

172

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

173

/sup 13/C magic angle spinning NMR study of CO adsorption on Ru-exchanged zeolite Y  

SciTech Connect

Three types of adsorbed carbon monoxide are observed on Ru-Y zeolite by /sup 13/C magic angle spinning NMR: linear, bridged, and dicarbonyl CO. Samples exposed to CO at room temperature exhibit only linear and dicarbonyl species. At higher adsorption temperature bridged species are formed and a relative increase in dicarbonyl adsorption is observed. A smaller percentage of linear species is produced at high temperature. The electronic environments of linearly bonded CO are more diverse than those of bridging and dicarbonyl moieties. CO/sub 2/ is formed over Ru-Y zeolite upon initial exposure of the catalyst to CO at room temperature, apparently through reaction with unreduced metal oxide. 20 references, 2 figures, 1 table.

Shoemaker, R.K.; Apple, T.M.

1985-07-18T23:59:59.000Z

174

Rapport de mission Congo 2010 expedition / Boyekali Ebale Congo 2010 B. LE RU, IRD, UR 072 (BEI)  

E-Print Network (OSTI)

Rapport de mission « Congo 2010 expedition / Boyekali Ebale Congo 2010 » B. LE RU, IRD, UR 072 (BEI) 30 avril 2010-11 Juin 2010 Le contexte Le fleuve Congo représente 25% des réserves d'eau renouvelable conservation du bassin du fleuve Congo doit être mise en place afin d'identifier et de protéger les zones de

175

Impact of IrRu Oxygen Evolution Reaction Catalysts on Pt Nanostructured Thin Films under Start-Up/Shutdown Cycling  

SciTech Connect

Electron microscopy and X-ray photoelectron spectroscopy (XPS) methods have been utilized to study the role of oxygen evolution reaction (OER) catalysts in mitigating degradation arising from start-up/shutdown events. Pt nanostructured thin films (NSTF) were coated with a Ru0.1Ir0.9 OER catalyst at loadings ranging from 1 to 10 g/cm2 and submitted to 5,000 potential cycles within a membrane electrode assembly. Analysis of the as-deposited catalyst showed that Ir and Ru coating is primarily metallic, and further evidence is provided to support the previously reported interaction between Ru and the perylene-red support. Aberration-corrected scanning transmission electron microscopy and energy dispersive X-ray spectroscopy were used to observe the impact of the OER catalysts on Pt dissolution and migration through the membrane. Elemental mapping showed a high percentage of the Ir catalyst was maintained on the NSTF whisker surfaces following testing. The presence of the OER catalysts greatly reduced the smoothing of the Pt NSTF whiskers, which has been correlated with Pt dissolution and losses in electrochemically active surface area. The dissolution of both Ir and Pt led to the formation of IrPt nanoparticle clusters in the membrane close to the cathode, as well as the formation of a Pt band deeper in the membrane.

Cullen, David A [ORNL; More, Karren Leslie [ORNL; Atanasoska, Liliana [3M, Industrial Mineral Products Division; Atanasoski, Radoslav [3M, Industrial Mineral Products Division

2014-01-01T23:59:59.000Z

176

Aqueous-phase selective aerobic oxidation of 5-hydroxymethylfurfural on Ru/C in the presence of base  

Science Journals Connector (OSTI)

Abstract The aerobic oxidation of 5-hydroxymethylfurfural (HMF) was performed on an activated carbon-supported ruthenium (Ru/C) catalyst in water. The presence of Mg-Al hydrotalcite (HT, Mg/Al molar ratio = 3/1) as a base afforded higher selective oxidation of HMF to 5-formyl-2-furancarboxylic acid (FFCA) and 2,5-furandicarboxylic acid (FDCA) than with the bases MgO, Ca(OH)2 and NaOH owing to its appropriate strength of basicity. X-ray photoelectron spectroscopy characterization confirmed that metallic Ru0 species were the active sites for HMF oxidation. Isotopic tracer experiments conducted with 18O2 and 16O2 indicated that H2O rather than O2 provided the oxygen atom for the oxidation of HMF to FFCA and FDCA via hydration of the formyl group. These results and kinetic studies of the oxidation of HMF and 2,5-diformylfuran (DFF) led to the proposition that the aerobic oxidation of HMF to FFCA follows a Langmuir-Hinshelwood mechanism. The oxidation involved dissociative adsorption of HMF and O2 to form adsorbed alcoholate and atomic oxygen species followed by kinetically relevant abstraction of ?-H from the alcoholate species via the atomic oxygen species to adsorbed DFF species on the Ru surface, which then underwent hydration and oxidation to FFCA under basic conditions.

Jiahan Xie; Junfang Nie; Haichao Liu

2014-01-01T23:59:59.000Z

177

Thermodynamics of FeSi  

Science Journals Connector (OSTI)

We show that a simple model involving two narrow (?500 K) peaks in the density of states (DOS) at the edges of a narrow (?1000 K) gap can account for the observed anomalies in the magnetic susceptibility, specific heat, thermal expansion, and elastic response of FeSi. We also show that the resistivity of FeSi, including the metal-insulator ‘‘transition’’ at about 300 K, is well described by this model. Recent band-structure calculations, although predicting the correct value for the semiconducting gap, are unable to account for the narrow peaks in the DOS needed to explain the thermodynamics. We conclude that, given the available alternatives, a Kondo insulator description—involving an extreme renormalization of the noninteracting bands—is most appropriate for FeSi.

D. Mandrus; J. L. Sarrao; A. Migliori; J. D. Thompson; Z. Fisk

1995-02-15T23:59:59.000Z

178

EXAFS study on the morphology change of Ru catalyst by CO adsorption  

SciTech Connect

Great attention has recently been paid to the reconstruction of clean metal surface upon adsorption. Then a question naturally arise what happens to the small metal clusters in supported catalyst upon adsorption, which is the first step of catalytic reaction. Surface spectroscopic techniques like LEED are not available for small particles on the surface of supports, and mainly infrared absorption spectroscopy has provided information, rather indirectly, through the number of observed vibrations and the frequency shifts of adsorbed species such as CO. Recently Van't Blik et al. reported in a series of papers direct evidence of a structural change of Rh clusters supported in Al/sub 2/O/sub 3/ upon CO adsorption. They observed a drastic change in EXAFS (extended X-ray absorption fine structure) by the admission of CO. It was concluded that this change was caused by the disruption of the metal-metal bond, resulting in formation of Rh(CO)/sub 2/ species. As far as the authors know, this is the only example of straightforward evidence of morphology changes caused by adsorption, and it is not certain whether or not this phenomenon is general. In this communication they present another example of the morphology change upon adsorption for Ru supported on ..gamma..-Al/sub 2/O/sub 3/ and show this phenomenon is not limited to Rh.

Mizushima, T.; Tohji, K.; Udagawa, Y.

1988-06-22T23:59:59.000Z

179

Microsoft Word - FeV.doc  

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

this reason, Fe K-edge X-ray Absorption (XAS) spectroscopy was used, in conjunction with electronic structure calculations, to obtain further insight into the Fe(V) complex. The...

180

Second Harmonic Generation Studies of Fe(II) Interactions with...  

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

Second Harmonic Generation Studies of Fe(II) Interactions with Hematite (?-Fe2O3). Second Harmonic Generation Studies of Fe(II) Interactions with Hematite (?-Fe2O3)....

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181

TESTING OF THE FE WALKING ROBOT MAY 2006 1 Testing of the FE Walking Robot  

E-Print Network (OSTI)

TESTING OF THE FE WALKING ROBOT MAY 2006 1 Testing of the FE Walking Robot Elianna R Weyer, May and result of testing the FE walking robot during spring 2006. Improve- ments in code and launch technique. The author predicts that with continued optimization and testing, the FE walking robot can surpass

Ruina, Andy L.

182

55Fe in Pacific Ocean plankton  

Science Journals Connector (OSTI)

The specific activity of 55Fe in plankton increased from below detectable limits at 20°N to a maximum of 130 nCi/g Fe at 20°S and then decreased to 5 nCi/g Fe at 50°S. Along an east-west track near 15°S a peak of...

C. D. Jennings

183

Characterization of hematite (a-Fe2O3), goethite (a-FeOOH), greigite (Fe3S4), and pyrrhotite (Fe7S8) using first-order reversal  

E-Print Network (OSTI)

Characterization of hematite (a-Fe2O3), goethite (a-FeOOH), greigite (Fe3S4), and pyrrhotite (Fe7S8) synthetic aluminous hematite (a-Fe2-xAlxO3) and goethite (a-(FeAl)OOH) and natural greigite (Fe3S4) and pyrrhotite (Fe7S8) to constrain interpretation of FORC diagrams from natural samples. Hematite and goethite

Utrecht, Universiteit

184

Process and genes for expression and overexpression of active [FeFe] hydrogenases  

DOE Patents (OSTI)

A process for expression of active [FeFe]-hydrogenase in a host organism that does not contain either the structural gene(s) for [FeFe]-hydrogenases and/or homologues for the maturation genes HydE, HydF and HyG, comprising: cloning the structural hydrogenase gene(s) and/or the maturation genes HydE, HydF and HydG from an organisms that contains these genes into expression plasmids; transferring the plasmids into an organism that lacks a native [FeFe]-hydrogenase or that has a disrupted [FeFe]-hydrogenase and culturing it aerobically; and inducing anaerobiosis to provide [FeFe] hydrogenase biosynthesis and H?2#191 production.

Seibert, Michael; King, Paul W; Ghirardi, Maria Lucia; Posewitz, Matthew C; Smolinski, Sharon L

2014-09-16T23:59:59.000Z

185

Computed oscillator strengths and energy levels for Fe III, Fe IV, Fe V, and Fe VI with calculated wavelengths and wavelengths derived from established data  

Science Journals Connector (OSTI)

Calculated weighted oscillator strengths are tabulated for spectral lines of Fe III, Fe IV, Fe V, and Fe VI. The lines belong to transition arrays 3d6-3d54p and 3d54s-3d54p in Fe III, 3d5-3d44p and 3d44s-3d44p in Fe IV, 3d4-3d34p and 3d34s-3d34p in Fe V, and 3d3-3d24p and 3d24s-3d24p in Fe VI. For the calculations, Slater parameters are optimized on the basis of minimizing the discrepancies between observed and computed wavelengths. Configuration interaction was included among the 3dn, 3dn?14s, 3dn?24s2, 3dn?14d, and 3dn?15s even configurations and among the 3dn?14p, 3dn?24s4p, and 3dn?15p odd configurations, with 3p53dn+1 added for Fe VI. Calculated wavelengths are compared with observational data, and the compositions of energy levels are listed. This completes a series of similar computations for these complex configurations covering Fe I to Fe VI.

B.C. Fawcett

1989-01-01T23:59:59.000Z

186

USING Fe-PILC as catalyst  

Science Journals Connector (OSTI)

Fe pillared clays (Fe-PILCs) were synthesized and characterized by X-ray diffraction (XRD), surface area, thermogravimetric analysis (TGA) and 57Fe Mössbauer spectroscopy. Hydrodeporphyrinization (HDP) of vanadyl octaetil porphyrine (VOOEP) and hydrodesulfurization (HDS) of thiophene were used as catalytic tests. It was demonstrated that Fe-PILCs are very active catalysts for the HDP of VOOEP. After sulfidation of the Fe-PILC, some of the iron forms a bulk pyrrhotite-type iron sulfide (Fe1?xS) phase and the Fe-PILC structure is partially destroyed by the sulfiding procedure. About half of the iron remains forming a pillar structure. Both, the segregated iron sulfide and the iron in the pillars, are active for the decomposition of the VOOEP.

B.P. Embaid; Jose G. Biomorgi; F. Gonzalez-Jimenez; M. Josefina Pérez-Zurita; Carlos E. Scott

2011-01-01T23:59:59.000Z

187

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

188

Order?Disorder Transformation in RuBr3 and MoBr3:? A Two-Dimensional Ising Model  

Science Journals Connector (OSTI)

Order?Disorder Transformation in RuBr3 and MoBr3:? A Two-Dimensional Ising Model ... We suggest that an equal spanning of the metals in the columns, as proposed by previous authors for the hexagonal phase, is never realized in any compound with the TiI3 structure type and present a possible mechanism of the order?disorder phase transition in this class of compounds and discuss it within the frame of a two-dimensional Ising model. ... 5. Ising Model ...

Stefano Merlino; Luca Labella; Fabio Marchetti; Simone Toscani

2004-09-09T23:59:59.000Z

189

Negative Volume Thermal Expansion Via Orbital and Magnetic Orders in Ca2Ru1-xCrxO4(0  

Science Journals Connector (OSTI)

Ca2RuO4 undergoes a metal-insulator transition at TMI=357??K, followed by a well-separated transition to antiferromagnetic order at TN=110??K. Dilute Cr doping for Ru reduces the temperature of the orthorhombic distortion at TMI and induces ferromagnetic behavior at TC. The lattice volume V of Ca2Ru1-xCrxO4 (0

T. F. Qi, O. B. Korneta, S. Parkin, L. E. De Long, P. Schlottmann, and G. Cao

2010-10-22T23:59:59.000Z

190

Exotic magnetism on the quasi-FCC lattices of the d3 double perovskites La2NaB'O6 (B' = Ru, Os)  

SciTech Connect

We find evidence for long-range and short-range ($\\zeta$~$=$~70~\\AA~at 4~K) incommensurate magnetic order on the quasi-face-centered-cubic (FCC) lattices of the monoclinic double perovskites La$_2$NaRuO$_6$ and La$_2$NaOsO$_6$ respectively. Incommensurate magnetic order on the FCC lattice has not been predicted by mean field theory, but may arise via a delicate balance of inequivalent nearest neighbour and next nearest neighbour exchange interactions. In the Ru system with long-range order, inelastic neutron scattering also reveals a spin gap $\\Delta$~$\\sim$~2.75~meV. Magnetic anisotropy is generally minimized in the more familiar octahedrally-coordinated $3d^3$ systems, so the large gap observed for La$_2$NaRuO$_6$ may result from the significantly enhanced value of spin-orbit coupling in this $4d^3$ material.

Aczel, Adam A [ORNL] [ORNL; Baker, Peter J. [ISIS Facility, Rutherford Appleton Laboratory (ISIS)] [ISIS Facility, Rutherford Appleton Laboratory (ISIS); Bugaris, Dan [University of South Carolina] [University of South Carolina; Yeon, Jeongho [University of South Carolina, Columbia] [University of South Carolina, Columbia; Zur Loye, Hans-Conrad [University of South Carolina] [University of South Carolina; Guidi, T. [ISIS Facility, Rutherford Appleton Laboratory (ISIS)] [ISIS Facility, Rutherford Appleton Laboratory (ISIS); Adroja, D. T. [ISIS Facility, Rutherford Appleton Laboratory (ISIS)] [ISIS Facility, Rutherford Appleton Laboratory (ISIS)

2014-01-01T23:59:59.000Z

191

Adsorption of water on O(2x2)/Ru(0001): thermal stability and inhibition of dissociation by H2O-O bonding  

SciTech Connect

The effect of preadsorbed oxygen on the subsequent adsorption and reactions of water on Ru(0001) has been studied using low temperature scanning tunneling microscopy and DFT calculations. Experiments were carried out for O coverages close to 0.25 ML. It was found that no dissociation of water takes place up to the desorption temperature of {approx}180-230 K. DFT calculations show that intact water on O(2x2)/Ru(0001) is {approx} 0.49 eV more stable than the dissociation products, H and OH, at their preferred fcc and top adsorption sites.

Mugarza, Aitor; Shimizu, Tomoko; Cabrera-Sanfelix, Pepa; Sanchez-Portal, Daniel; Arnau, Andres; Salmeron, Miquel

2008-08-01T23:59:59.000Z

192

Efficient Solar to Chemical Conversion: 12% Efficient Photoassisted Electrolysis in the [p-type InP(Ru)]/HCl-KCl/Pt(Rh) Cell  

Science Journals Connector (OSTI)

The photoelectrochemical cell [p-type InP(Ru)]/HCl-KCl/Pt(Rh) converts 12% of the incident solar energy into two useful chemicals, hydrogen and chlorine, by photoassisted electrolysis of aqueous hydrochloric acid. At the threshold for electrolysis, the voltage required is reduced from 1.3 to 0.65 V. Hydrogen evolution takes place at microscopic islands of catalysts such as Rh, Ru, and Pt. The high efficiency of the cell derives from a thin surface oxide on InP, preventing carrier recombination, and from efficient transport of electrons to the catalyst.

Adam Heller and Richard G. Vadimsky

1981-04-27T23:59:59.000Z

193

Fe/Au Multilayers: Structure and Magnetoresistance  

SciTech Connect

We have measured the magnetoresistance (MR) in two sets of Fe/Au multilayers, with varying (1) Fe layer thickness, t{sub Fe} = 3-10 nm, and (2) Au layer thickness t{sub Au} = 5-15 nm, grown on Si substrates by sputtering. The multilayer interface structure and magnetic properties were studied by polarized neutron reflectometry (PNR). The study was undertaken to understand the correlation between structure of these multilayers and their magneto-transport properties.

Singh, Surendra; Basu, Saibal; Bhattacharya, D. [Solid State Physics Division, Bhabha Atomic Research Center, Mumbai 400085 (India); Prajapat, C. L. [Technical Physics Division, Bhabha Atomic Research Center, Mumbai 400085 (India); Gupta, M. [UGC-DAE Consortium for Scientific Research, University Campus, Khandwa Road, Indore 452 017 (India)

2011-07-15T23:59:59.000Z

194

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

195

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

196

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

197

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

198

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

199

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

200

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

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

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

202

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

203

Fe-V redox flow batteries  

DOE Patents (OSTI)

A redox flow battery having a supporting solution that includes Cl.sup.- anions is characterized by an anolyte having V.sup.2+ and V.sup.3+ in the supporting solution, a catholyte having Fe.sup.2+ and Fe.sup.3+ in the supporting solution, and a membrane separating the anolyte and the catholyte. The anolyte and catholyte can have V cations and Fe cations, respectively, or the anolyte and catholyte can each contain both V and Fe cations in a mixture. Furthermore, the supporting solution can contain a mixture of SO.sub.4.sup.2- and Cl.sup.- anions.

Li, Liyu; Kim, Soowhan; Yang, Zhenguo; Wang, Wei; Zhang, Jianlu; Chen, Baowei; Nie, Zimin; Xia, Guanguang

2014-07-08T23:59:59.000Z

204

fe0013723-UTA | netl.doe.gov  

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

Development of Nanoparticle-Stabilized Foams To Improve Performance of Water-less Hydraulic Fracturing Last Reviewed 1292014 DE-FE0013723 Goal The overall objective of this...

205

fe0024271-utaustin | netl.doe.gov  

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

Fracture Diagnostics Using Low Frequency Electromagnetic Induction and Electrically Conductive Proppants Last Reviewed January 2015 DE-FE0024271 Goal The goal of this project is to...

206

THE SPECTRUM OF Fe II  

SciTech Connect

The spectrum of singly ionized iron (Fe II) has been recorded using high-resolution Fourier transform (FT) and grating spectroscopy over the wavelength range 900 A to 5.5 {mu}m. The spectra were observed in high-current continuous and pulsed hollow cathode discharges using FT spectrometers at the Kitt Peak National Observatory, Tucson, AZ and Imperial College, London and with the 10.7 m Normal Incidence Spectrograph at the National Institute of Standards and Technology. Roughly 12,900 lines were classified using 1027 energy levels of Fe II that were optimized to measured wavenumbers. The wavenumber uncertainties of lines in the FT spectra range from 10{sup -4} cm{sup -1} for strong lines around 4 {mu}m to 0.05 cm{sup -1} for weaker lines around 1500 A. The wavelength uncertainty of lines in the grating spectra is 0.005 A. The ionization energy of (130,655.4 {+-} 0.4) cm{sup -1} was estimated from the 3d{sup 6}({sup 5}D)5g and 3d{sup 6}({sup 5}D)6h levels.

Nave, Gillian [National Institute of Standards and Technology, Gaithersburg, MD 20899-8422 (United States); Johansson, Sveneric, E-mail: gillian.nave@nist.gov [Lund Observatory, University of Lund, Box 43, SE-22100 Lund (Sweden)

2013-01-15T23:59:59.000Z

207

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

208

Address: 125252, Russia, Moscow, Zorge Street, 9, www.farmina.ru The status and development trends of the Russian HP market  

E-Print Network (OSTI)

#12;2 Address: 125252, Russia, Moscow, Zorge Street, 9, www.farmina.ru The status and development Shishov, Farmina, Russia E-mail:vv@shishov.net . ., , 10.2013 #12;3 Address: 125252, Russia . « » 2020 . 45 , (), [1]. #12;4 Address: 125252, Russia, Moscow, Zorge Street, 9, www

Oak Ridge National Laboratory

209

Electron Microscopy Study of Novel Ru Doped La0.8Sr0.2CrO3 as Anode Materials for Solid Oxide Fuel Cells (SOFCs)  

E-Print Network (OSTI)

Electron Microscopy Study of Novel Ru Doped La0.8Sr0.2CrO3 as Anode Materials for Solid Oxide Fuel of Materials Science and Engineering, Northwestern University, 2220 Campus Dr. Evanston, IL 60208 Solid Oxide Fuel Cells (SOFCs) have been the center of research activities with the goal of improving energy

Marks, Laurence D.

210

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

SciTech Connect

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

211

Giant dielectric response in Pb,,Zr,Ti...O3Pb2Ru2O6.5 all-ceramic percolative composite  

E-Print Network (OSTI)

Giant dielectric response in Pb,,Zr,Ti...O3­Pb2Ru2O6.5 all-ceramic percolative composite Vid Bobnar response of a composite comprising a conductive filler embedded in a dielectric matrix--the effective­9 and inorganic composites comprising metal particles dis- persed in a dielectric matrix10­14 have been developed

Bobnar, Vid

212

Julgoldite, the Fe+2?Fe+3 dominant pumpellyite: A new mineral from Långban, Sweden  

Science Journals Connector (OSTI)

Julgoldite, (Ca, Mn)2(Fe+2,Fe+3,Mg) (Fe+3, Al)2(SiO4)(Si2O7) (OH)2(H2O), is the Fe+2?Fe+3 member of the pumpellyite group occuring as a new fissure mineral from the ‘Amerika’ stope, Långban, Sweden. It occurs as black bladed crystals, H=412, cleavage a {100} good, streak and powder greenish-olive with a bluish tinge. The structure cell data indicate an isomorphous member of the pumpellyite group, with ?=3.602 gm/cc, a=8.92, b=6.09, c=19.37 A?, ?=97°30?, Z=4, space group A2/m.

Paul B Moore

1971-01-01T23:59:59.000Z

213

Low-Dimensional Water on Ru(0001)Model System for X-ray Absorption Spectroscopy Studies of Liquid Water  

SciTech Connect

We present an x-ray absorption spectroscopy results for fully broken to a complete H-bond network of water molecules on Ru(0001) by varying the morphology from isolated water molecules via two-dimensional clusters to a fully covered monolayer as probed by scanning tunneling microscopy. The sensitivity of x-ray absorption to the symmetry of H-bonding is further elucidated for the amino (-NH{sub 2}) group in glycine adsorbed on Cu(110) where the E-vector is parallel either to the NH donating an H-bond or to the non-H-bonded NH. The results give further evidence for the interpretation of the various spectral features of liquid water and for the general applicability of x-ray absorption spectroscopy to analyze H-bonded systems.

Nordlund, D

2012-02-14T23:59:59.000Z

214

Low-Dimensional Water on Ru(0001); Model System for X-ray Absorption Spectroscopy Studies of Liquid Water  

SciTech Connect

We present an x-ray absorption spectroscopy results for fully broken to a complete H-bond network of water molecules on Ru(0001) by varying the morphology from isolated water molecules via two-dimensional clusters to a fully covered monolayer as probed by scanning tunneling microscopy. The sensitivity of x-ray absorption to the symmetry of H-bonding is further elucidated for the amino (-NH{sub 2}) group in glycine adsorbed on Cu(110) where the E-vector is parallel either to the NH donating an H-bond or to the non-H-bonded NH. The results give further evidence for the interpretation of the various spectral features of liquid water and for the general applicability of x-ray absorption spectroscopy to analyze H-bonded systems.

Nordlund, D.; Ogasawara, H.; Andersson, K.J.; Tatarkhanov, M.; Salmeron, M.; Pettersson, L. G. M.; Nilsson, A.

2009-05-11T23:59:59.000Z

215

Purification and Characterization of [NiFe]-Hydrogenase of Shewanella...  

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

Purification and Characterization of NiFe-Hydrogenase of Shewanella oneidensis MR-1. Purification and Characterization of NiFe-Hydrogenase of Shewanella oneidensis MR-1....

216

Viscosity of liquid Fe at high pressure  

Science Journals Connector (OSTI)

Synchrotron x-ray radiography has been used to measure the viscosity of pure liquid Fe at high pressure and temperature in a large volume press. A probe sphere rising through liquid Fe at high pressure and temperature is imaged, in situ, allowing for the derivation of sample viscosity through a modified form of Stokes’ equation. The effect of pressure on viscosity is fit by the semi empirical framework for transport coefficients in liquid metals, providing experimental verification of constant viscosity at the pressure-dependent melting temperature of liquid Fe where no change in liquid structure occurs.

Michael D. Rutter; Richard A. Secco; Hongjian Liu; Takeyuki Uchida; Mark L. Rivers; Stephen R. Sutton; Yanbin Wang

2002-08-14T23:59:59.000Z

217

New isomeric form of the "M2(OC5H3NCl)4" core: a polar arrangement of the four 6-chloro-2-hydroxypyridinato (chp) ligands in a chlorodiruthenium(II,III) complex, Ru2Cl(chp)4  

Science Journals Connector (OSTI)

New isomeric form of the "M2(OC5H3NCl)4" core: a polar arrangement of the four 6-chloro-2-hydroxypyridinato (chp) ligands in a chlorodiruthenium(II,III) complex, Ru2Cl(chp)4 ...

Akhil R. Chakravarty; F. Albert Cotton; Derek A. Tocher

1985-04-01T23:59:59.000Z

218

The transport coefficients in (R1.5Ce0.5)RuSr2Cu2O10-5 (R=Gd,Eu) rutheno-cuprates  

E-Print Network (OSTI)

Page Table 1. The onset of superconductivity and the values for first and second superconducting temperatures, Tc and Tcg superconducting temperatures for Ru-1222(Eu) with different oxygen content..............................................61... Table 2. The onset of superconductivity, the values for first and second superconducting temperatures, Tc and Tcg determined from resistivity data and the superconducting temperatures TcS determined from thermopower data for Ru-1222(Gd) with different...

Anatska, Maryna Petrovna

2007-04-25T23:59:59.000Z

219

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

220

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

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

FE0001175_PTTC | netl.doe.gov  

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

Targeted Technology Transfer for Oil and Natural Gas Last Reviewed 1282014 DE-FE0001175 Goal The goal of this project is to conduct an encompassing suite of oil and natural gas...

222

fe0024314-swri | netl.doe.gov  

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

Novel Natural Gas Surface Process Equipment for Replacement of Water as Primary Hydraulic Fracturing Fluid Last Reviewed 1272015 DE-FE0024314 Goal The goal is to develop and...

223

FE Clean Coal News | Department of Energy  

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

Clean Coal News FE Clean Coal News RSS October 7, 2014 Funds Awarded to Historically Black Colleges and Universities for Fossil Energy Research The U.S. Department of Energy has...

224

Nitrate regulation of Fe reduction and transport by Fe-limited ...  

Science Journals Connector (OSTI)

ganic Fe concentration was estimated for illuminated media. (Sunda and Huntsman 1995) ...... in this regard (Raven and Smith 1976). Cells that metabolize. NO3.

2000-06-05T23:59:59.000Z

225

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.

226

A highly reactive and stable Ru/Co6?xMgxAl2 catalyst for hydrogen production via methane steam reforming  

Science Journals Connector (OSTI)

Abstract Hydrogen production by methane steam reforming is an important yet challenging process. A performing catalyst will favor the thermodynamic equilibrium while ensuring good hydrogen selectivity. We hereby report the synthesis of a ruthenium based catalyst on a cobalt, magnesium, and aluminum mixed oxides supports. An interaction between cobalt and ruthenium favors the formation of smaller, well dispersed cobalt/ruthenium oxide species. The Ru/Co6Al2 catalyst outmatches the widely used industrial Ru/Al2O3 catalyst. The catalyst is stable for 100 h on stream. After test characterization shows the formation of carbon and coke deposits at trace levels. However, this does not affect the catalytic performance of the catalysts making it good candidates for industrial applications.

Doris Homsi; Samer Aouad; Cédric Gennequin; Antoine Aboukaïs; Edmond Abi-Aad

2014-01-01T23:59:59.000Z

227

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

228

Magnetism of HgSe:Fe  

Science Journals Connector (OSTI)

The perpendicular and parallel components of the magnetization of the mixed valence system Hg1-xFexSe in the strongly dilute limit (xmagnetic fields up to 20 T. In this interesting semimagnetic semiconductor the overall magnetization is caused simultaneously by Fe3+ (Brillouin paramagnet), Fe2+ (van Vleck paramagnet), and free electrons (diamagnetic de Haas-van Alphen effect). Using a torque magnetometer the various contributions with their anisotropy are individually determined. For very low iron content (xmagnetic moment perpendicular to the magnetic field when applying the field in a nonsymmetric direction of the crystal. Using recent theoretical results on the energy-level diagram of Fe2+ in the Td symmetry of a HgSe host lattice we deduce a spin-orbit level splitting of 2 meV from our experimental data. In contrast to higher concentration samples, both the Brillouin paramagnetism of Fe3+ and the van Vleck paramagnetism of Fe2+ can be attributed to the sum from individual Fe donors with no obvious magnetic interaction between them. Finally, we also have measured de Haas-van Alphen oscillations of the conduction-band electrons with amplitudes of the same order as the paramagnetic background. From the measured crystal-field-induced anisotropy in the magnetic moment we deduce a Fermi-surface anisotropy of about 7%.

U. Zeitler; A. Wittlin; J. C. Maan; W. Dobrowolski; A. Mycielski

1996-12-01T23:59:59.000Z

229

Parametrized linear muffin-tin orbitals atomic-sphere approximation tight-binding scheme: The electronic structure of MoRu alloys  

Science Journals Connector (OSTI)

In this paper we use the recursion method and a linear muffin-tin orbital atomic-sphere approximation (LMTO-ASA) tight-binding (TB) Hamiltonian taken to first order in E-E?, to obtain the electronic structure of Mo-Ru compounds and amorphous clusters of Mo1-xRux for several values of x. It is well known that the LMTO-ASA-TB formalism treats s, p, and d orbitals in an equivalent manner. Therefore it allows the inclusion of important effects, such as the splitting of the center of the bands due to local environment and s-p-d hybridization. These effects are often neglected in the usual parametrized tight-binding Hamiltonians. The LMTO-ASA-TB Hamiltonian used here is parametrized in the sense that potential parameters for the pure metals were used in the calculations and the relative position of the bands in the binaries was adjusted by imposing approximate charge neutrality. But the parametrization is based on a solid theoretical background and no fitting to more exact first-principles calculations is needed. In this paper we show that for the Mo-Ru compounds, a simple parametrized LMTO-ASA-TB Hamiltonian produces good results, when compared to independent first-principles, self-consistent augmented-spherical-wave k-space calculations. We also use the parametrized LMTO-ASA-TB Hamiltonian to obtain the electronic structure of amorphous Mo1-xRux alloys for several values of x. We show that, for these alloys, the density of states at the Fermi level, N(EF), tends to decrease as the Ru concentration increases. This is in agreement with observed experimental tendencies. We note that when the splitting of band centers and s-p-d hybridization are neglected in the calculations, the trends are reversed, with N(EF) increasing as the Ru concentration increases. This illustrates the importance of taking these effects into account.

Sandra Ferreira; Jaime Duarte; Jr.; Sonia Frota-Pessa

1990-03-15T23:59:59.000Z

230

Surface magnetism of Fe(001)  

Science Journals Connector (OSTI)

Results of all-electron self-consistent semirelativistic full-potential linearized augmented-plane-wave local-density and local-spin-density studies are reported for a seven-layer Fe(001) thin film. The calculated work function for the ferromagnetic state is found to be in excellent agreement with experiment, whereas that calculated for the paramagnetic state is significantly worse (namely, 0.5 eV too large), indicating the importance of spin polarization on this electrostatic property. For both states, partial densities of states (projected by layer and by orbital angular momentum), surface states, and charge (and spin) densities are presented and their differences employed to discuss the origin of surface magnetism. No Friedel oscillation is found in the layer-by-layer charge density. The surface-layer magnetic moment is found to have been increased by 0.73?B from the center layer to 2.98?B/atom; a very small Friedel oscillation is obtained for the spin density, which indicates possible size effects in this seven-layer film. Layer-by-layer Fermi contact hyperfine fields are presented: While the core-polarization contributions are proportional to the magnetic moment, the conduction-electron contribution shows a pronounced Friedel oscillation in the central layer and, significantly, a change of sign and increase in the magnitude for the surface-layer contribution. The hyperfine field at the nucleus of the center-layer atoms is found to be in excellent agreement with experiment. The net result for the surface-layer atoms is a predicted decrease in magnitude of the total Fermi contact hyperfine field despite the large increase of their magnetic moments. The relevance of this prediction to experiment is discussed.

S. Ohnishi; A. J. Freeman; M. Weinert

1983-12-15T23:59:59.000Z

231

Electronic Properties of LiFePO4 and Li doped LiFePO4  

SciTech Connect

LiFePO{sub 4} has several potential advantages in comparison to the transition metal oxide cathode materials used in commercial lithium-ion batteries. However, its low intrinsic electronic conductivity ({approx} 10{sup -9} S/cm) is problematic. We report here a study by soft x-ray absorption/emission spectroscopy of the electronic properties of undoped LiFePO{sub 4} and Li-doped LiFePO{sub 4} in which Li{sup +} ions are substituted for Fe{sup 2+} ions in an attempt to increase the intrinsic electronic conductivity. The conductivities of the Li{sub 1+x}Fe{sub 1-x}PO{sub 4} samples were, however, essentially unchanged from that of the undoped LiFePO{sub 4}. Nonetheless, evidence for changing the electronic properties of LiFePO{sub 4} by doping with excess Li+ was observed by the XAS/XES spectroscopy. New pre-edge features the O-1s XAS spectrum of Li{sub 1.05}Fe{sub 0.95}PO4 is a direct indication that the charge compensation for substitution of Fe{sup 2+} by Li{sup +} resides in the unoccupied O-2p orbitals. A charge transfer (CT) excitation was also observed in the doped material implying that the unoccupied O-2p orbitals created by doping are strongly hybridized with unoccupied Fe-3d orbitals of neighboring sites. However, the strong covalent bonding within the (PO{sub 4}){sup 3-} anions and the large separation of the Fe cations means that the charge created by doping is not delocalized in the manner of electrons or holes in a semiconductor.

Allen, J.L.; Zhuang, G.V.; Ross, P.N.; Guo, J.-H.; Jow, T.R.

2006-05-31T23:59:59.000Z

232

Electronic Properties of LiFePO4 and Li doped LiFePO4  

SciTech Connect

The potential use of different iron phosphates as cathodematerials in lithium-ion batteries has recently been investigated.1 Oneof the promising candidates is LiFePO4. This compound has severaladvantages in comparison to the state-of-the-art cathode material incommercial rechargeable lithium batteries. Firstly, it has a hightheoretical capacity (170 mAh/g). Secondly, it occurs as mineraltriphylite in nature and is inexpensive, thermally stable, non-toxic andnon-hygroscopic. However, its low electronic conductivity (~;10-9 S/cm)results in low power capability. There has been intense worldwideresearch activity to find methods to increase the electronic conductivityof LiFePO4, including supervalent ion doping,2 introducingnon-carbonaceous network conduction3 and carbon coating, and theoptimization of the carbon coating on LiFePO4 particle surfaces.4Recently, the Li doped LiFePO4 (Li1+xFe1-xPO4) synthesized at ARL hasyield electronic conductivity increase up to 106.5 We studied electronicstructure of LiFePO4 and Li doped LiFePO4 by synchrotron based soft X-rayemission (XES) and X-ray absorption (XAS) spectroscopies. XAS probes theunoccupied partial density of states, while XES the occupied partialdensity of states. By combining XAS and XES measurements, we obtainedinformation on band gap and orbital character of both LiFePO4 and Lidoped LiFePO4. The occupied and unoccupied oxygen partial density ofstates (DOS) of LiFePO4 and 5 percent Li doped LiFePO4 are presented inFig. 1. Our experimental results clearly indicate that LiFePO4 has wideband gap (~; 4 eV). This value is much larger than what is predicted byDFT calculation. For 5 percent Li doped LiFePO4, a new doping state wascreated closer to the Fermi level, imparting p-type conductivity,consistent with thermopower measurement. Such observation substantiatesthe suggestion that high electronic conductivity in Li1.05Fe0.95 PO4 isdue to available number of charge carriers in the material. Furthermore,Hall effect measurement on Li doped sample confirmed presence of freecharge carriers, which are responsible for the observed electronicconductivity increase in Li doped LiFePO4. There is no evidence that Fe3+valence is created by doping with excessive Li+ in Li1.05Fe0.95PO4, asshown by Fe-edge XAS. (Fig.2) Instead, charge-carrier holes resideprimarily in unoccupied O 2p states, which compensate for the chargedeficiency from Li+ substitution for Fe2+. The increased conductivity inLi1.05Fe0.95PO4 is attributed to the new charge carriers (doped holes)and the strong electron correlation between O 2p and Fe 3dstates.

Zhuang, G.V.; Allen, J.L.; Ross, P.N.; Guo, J.-H.; Jow, T.R.

2005-06-28T23:59:59.000Z

233

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

E-Print Network (OSTI)

performance permanent magnets has focused attention on exchange-coupled nanocomposites because of their low to fabricate exchange-coupled Pr2Fe14B/-Fe nanocomposite bulk magnets, using explosively generated shock waves, ensured exchange coupling between the hard and soft phases, resulting in magnetic properties better than

Liu, J. Ping

234

Explosive shock processing of Pr2Fe14B/ Fe exchange-coupled nanocomposite bulk magnets  

E-Print Network (OSTI)

Explosive shock processing of Pr2Fe14B/ ­Fe exchange-coupled nanocomposite bulk magnets Z.Q. Jin between neigh- boring magnetic phases.1,2 The prerequisite for effective exchange coupling is a small are usually used to produce single-phase microcrystalline permanent magnets, are not favored in making bulk

Liu, J. Ping

235

Characterization of new Co and Ru on -WC catalysts for Fischer-Tropsch reaction. Influence of the carbide surface state.  

E-Print Network (OSTI)

[8]. Among the group VI transition metal carbides, the hexagonal tungsten carbide WC is a remarkable proceeds on supported transition metal catalysts, Co or Fe on oxide supports generally Al2O3 or SiO2 [1 of the carbide surface state. A. Griboval-Constant(1) *, J.-M. Giraudon(1) , I. Twagishema(1) , G. Leclercq(1

Paris-Sud XI, Université de

236

Characterization of new Co and Ru on -WC catalysts for Fischer-Tropsch reaction. Influence of the carbide surface state.  

E-Print Network (OSTI)

of the metallic particles [8]. Among the group VI transition metal carbides, the hexagonal tungsten carbide WC monoxide and hydrogen. FT synthesis proceeds on supported transition metal catalysts, Co or Fe on oxide of the carbide surface state. A. Griboval-Constant(1) *, J.-M. Giraudon(1) , I. Twagishema(1) , G. Leclercq(1

Paris-Sud XI, Université de

237

FeP precipitates in hydride?vapor phase epitaxially grown InP:Fe  

Science Journals Connector (OSTI)

Fe?doped InP was grown by hydride?vapor phase epitaxy.Doping levels up to 8×1018 cm?3 were determined by secondary ion mass spectrometry. Additionally performed photoluminescence measurements revealed a homogeneous distribution of electrically active Fe atoms. From microstructural investigations by analytical transmission electron microscopy spherical?shaped precipitates were detected in plan?view samples. These precipitates with diameters up to 13 nm are homogeneously arranged in the epilayer. For conglomerates of precipitates a distinct enrichment with Fe and P was measured by a comparative energy dispersive x?ray analysis. The lattice plane distances of the precipitates were deduced from the electron diffraction patterns and from high?resolution electron micrographs. A comparison with calculated values for different Fe–P alloys indicates that the precipitates consist mainly of orthorhombic FeP.

M. Luysberg; R. Göbel; H. Janning

1994-01-01T23:59:59.000Z

238

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":""}]}

239

The mechanical properties of FeAl  

SciTech Connect

Only in the last few years has progress been made in obtaining reproducible mechanical properties data for FeAl. Two sets of observations are the foundation of this progress. The first is that the large vacancy concentrations that exist in FeAl at high temperature are easily retained at low temperature and that these strongly affect the low-temperature mechanical properties. The second is that RT ductility is adversely affected by water vapor. Purpose of this paper is not to present a comprehensive overview of the mechanical properties of FeAl but rather to highlight our understanding of key phenomena and to show how an understanding of the factors which control the yield strength and fracture behavior has followed the discovery of the above two effects. 87 refs, 9 figs.

Baker, I. [Dartmouth Coll., Hanover, NH (United States); George, E.P. [Oak Ridge National Lab., TN (United States)

1996-12-31T23:59:59.000Z

240

Evidence for weak electronic correlations in Fe-pnictides  

SciTech Connect

Using x-ray absorption and resonant inelastic x-ray scattering, charge dynamics at and near the Fe L edges is investigated in Fe pnictide materials, and contrasted to that measured in other Fe compounds. It is shown that the XAS and RIXS spectra for 122 and 1111 Fe pnictides are each qualitatively similar to Fe metal. Cluster diagonalization, multiplet, and density-functional calculations show that Coulomb correlations are much smaller than in the cuprates, highlighting the role of Fe metallicity and strong covalency in these materials. Best agreement with experiment is obtained using Hubbard parameters U {approx}< 2eV and J {approx} 0.8eV.

Yang, W.L.

2010-04-29T23:59:59.000Z

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


241

Evidence for weak electronic correlations in Fe-Pnictides  

SciTech Connect

Using x-ray absorption and resonant inelastic x-ray scattering, charge dynamics at and near the Fe L edges is investigated in Fe pnictide materials, and contrasted tothat measured in other Fe compounds. It is shown that the XAS and RIXS spectra for 122 and 1111 Fe pnictides are each qualitatively similar to Fe metal. Cluster diagonalization, multiplet, and density-functional calculations show that Coulomb correlations are much smaller than in the cuprates, highlighting the role of Fe metallicity and strong covalency in these materials. Best agreement with experiment is obtained using Hubbard parameters U<~;; 2eV and J ~;; 0.8eV.

Yang, W. L.; Sorini, A. P.; Chen, C-C.; Moritz, B.; Lee, W.-S.; Vernay, F.; Olalde-Velasco, P.; Denlinger, J. D.; Delley, B.; Chu, J.-H.; Analytis, J.G.; Fisher, I. R.; Ren, Z. A.; Yang, J.; Lu, W.; Zhao, Z. X.; van den Brink, J.; Hussain, Z.; Shen, Z.-X.; Devereaux, T. P.

2009-06-11T23:59:59.000Z

242

The effect of Ta on the magnetic thickness of permalloy (Ni{sub 81}Fe{sub 19}) films  

SciTech Connect

The effect of Ta and Ta/Cu seed layers, and Ta and Cu cap layers on the effective magnetic thickness of ultrathin permalloy (Ni{sub 81}Fe{sub 19}) was investigated for MRAM applications. The films were deposited by Ion Beam Deposition. The magnetic moment of each as-deposited permalloy film was measured using a B-H looper and a SQUID magnetometer. The films were further annealed at either 525 K for 1/2 h or 600 K for 1 h to study the effect of thermally driven interdiffusion on the magnetic moment of the permalloy film. Our theoretical calculations showed that the presence of 12% intermixing at the interface reduces the Ni moments to zero. Experimentally, it was shown that the tantalum rather than the copper interfaces are primarily responsible for the magnetically dead layers. The Ta seed layer interface produces a loss of moment equivalent to a magnetically dead layer of thickness 0.6{+-}0.2 nm. The Ta metal in the cap layer results in a loss of moment equivalent to a dead layer of thickness 1.0{+-}0.2 nm. Upon annealing, thermally driven interdiffusion is concluded to have a strong effect on the Ta(seed)/ Ni{sub 81}Fe{sub 19} as-deposited interface, based on the doubling of the magnetically dead layer to 1.2{+-}0.2 nm. The Ni{sub 81}Fe{sub 19}/Ta(cap) as-deposited interface slightly increases its equivalent magnetically dead layer upon annealing to 1.2{+-}0.2 nm. As-deposited interfaces of Ta(seed)/permalloy and permalloy/Ta(cap) are not chemically equivalent and result in different magnetically dead layers, whereas after annealing to 600 K both interfaces attain comparable intermixing and magnetically dead layers. It was also shown that a half-hour anneal at the lower 525 K annealing temperature, which is closer to the actual processing temperature, results in only slight increase of the magnetically dead layer at both interfaces. (c) 2000 American Institute of Physics.

Kowalewski, M. [Metals and Ceramics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States)] [Metals and Ceramics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States); Butler, W. H. [Metals and Ceramics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States)] [Metals and Ceramics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States); Moghadam, N. [Metals and Ceramics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States)] [Metals and Ceramics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States); Stocks, G. M. [Metals and Ceramics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States)] [Metals and Ceramics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States); Schulthess, T. C. [Metals and Ceramics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States)] [Metals and Ceramics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States); Song, K. J. [Solid State Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States)] [Solid State Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States); Thompson, J. R. [Solid State Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States)] [Solid State Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States); Arrott, A. S. [Honeywell, Inc., MN14-3C15, 12001 State Highway 55, Plymouth, Minnesota 55441 (United States)] [Honeywell, Inc., MN14-3C15, 12001 State Highway 55, Plymouth, Minnesota 55441 (United States); Zhu, T. [Honeywell, Inc., MN14-3C15, 12001 State Highway 55, Plymouth, Minnesota 55441 (United States)] [Honeywell, Inc., MN14-3C15, 12001 State Highway 55, Plymouth, Minnesota 55441 (United States); Drewes, J. [Honeywell, Inc., MN14-3C15, 12001 State Highway 55, Plymouth, Minnesota 55441 (United States)] (and others) [Honeywell, Inc., MN14-3C15, 12001 State Highway 55, Plymouth, Minnesota 55441 (United States)

2000-05-01T23:59:59.000Z

243

Membrane separation advances in FE hydrogen program  

SciTech Connect

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

244

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

245

The effect of the exchange-correlation functional on H{sub 2} dissociation on Ru(0001)  

SciTech Connect

The specific reaction parameter (SRP) approach to density functional theory (DFT) has enabled a chemically accurate description of reactive scattering experiments for activated H{sub 2}–metal systems (H{sub 2} + Cu(111) and Cu(100)), but its application has not yet resulted in a similarly accurate description of non-activated or weakly activated H{sub 2}-metal systems. In this study, the effect of the choice of the exchange-correlation functional in DFT on the potential energy surface and dynamics of H{sub 2} dissociation on Ru(0001), a weakly activated system, is investigated. In total, full potential energy surfaces were calculated for over 20 different functionals. The functionals investigated include functionals incorporating an approximate description of the van der Waals dispersion in the correlation functional (vdW-DF and vdW-DF2 functionals), as well as the revTPSS meta-GGA. With two of the functionals investigated here, which include vdW-DF and vdW-DF2 correlation, it has been possible to accurately reproduce molecular beam experiments on sticking of H{sub 2} and D{sub 2}, as these functionals yield a reaction probability curve with an appropriate energy width. Diffraction probabilities computed with these two functionals are however too high compared to experimental diffraction probabilities, which are extrapolated from surface temperatures (T{sub s}) ? 500 K to 0 K using a Debye–Waller model. Further research is needed to establish whether this constitutes a failure of the two candidate SRP functionals or a failure of the Debye–Waller model, the use of which can perhaps in future be avoided by performing calculations that include the effect of surface atom displacement or motion, and thereby of the experimental T{sub s}.

Wijzenbroek, M.; Kroes, G. J. [Leiden Institute of Chemistry, Gorlaeus Laboratories, Leiden University, P.O. Box 9502, 2300 RA, Leiden (Netherlands)] [Leiden Institute of Chemistry, Gorlaeus Laboratories, Leiden University, P.O. Box 9502, 2300 RA, Leiden (Netherlands)

2014-02-28T23:59:59.000Z

246

Polarized neutron reflectometry of Fe/Cr/Gd superlattices  

Science Journals Connector (OSTI)

The magnetic structure of Fe/Cr/Gd superlattices is investigated using complementary methods of SQUID magnetometry and polarized neutron reflectometry. The complex magnetic behavior of the given...d (Fe) and 4f (...

M. V. Ryabukhina; E. A. Kravtsov…

2014-09-01T23:59:59.000Z

247

Magnetism of Fe/Pd superlattices  

Science Journals Connector (OSTI)

A series of Fe/Pd superlattices of varying numbers of atoms per layer were fabricated. Structural properties were characterized by x-ray diffraction. Magnetic properties were studied by Mössbauer spectroscopy and transport properties by electrical-conductivity measurements. All properties studied could be explained by structural characteristics, such as grain size and interdiffusion, without the need of invoking superlattice effects.

Ahmed Boufelfel; Roy M. Emrick; Charles M. Falco

1991-06-01T23:59:59.000Z

248

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).

249

Fe-vacancy order and superconductivity in tetragonal ?-Fe1-xSe  

Science Journals Connector (OSTI)

...K-W ( 2013 ) Recent advances in {beta} -FeSe1...superconductor . Science 332 ( 6036 ): 1410...superconductors . Science 277 ( 5329 ): 1067...by the National Science Council, the Academia...Asian Office of Aerospace Research and Development...

Ta-Kun Chen; Chung-Chieh Chang; Hsian-Hong Chang; Ai-Hua Fang; Chih-Han Wang; Wei-Hsiang Chao; Chuan-Ming Tseng; Yung-Chi Lee; Yu-Ruei Wu; Min-Hsueh Wen; Hsin-Yu Tang; Fu-Rong Chen; Ming-Jye Wang; Maw-Kuen Wu; Dirk Van Dyck

2014-01-01T23:59:59.000Z

250

E-Print Network 3.0 - amorfa base fe Sample Search Results  

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

to interpreting Fe redox cycling in nature based on Fe isotopes. Studies of Fe(II)-HFO interactions are difficult... .58 ( 0.14 (2) a Extrapolated Fe isotope compositions are...

251

“Covalent Hydration” Reactions in Model Monomeric Ru 2,2'-Bipyridine Complexes: Thermodynamic Favorability as a Function of Metal Oxidation and Overall Spin States  

SciTech Connect

Density functional theory (DFT) has been used to investigate the plausibility of water addition to the simple mononuclear ruthenium complexes, [(NH{sub 3}){sub 3}(bpy)Ru=O]{sup 2+}/{sup 3+} and [(NH{sub 3}){sub 3}(bpy)RuOH]{sup 3+}, in which the OH fragment adds to the 2,2{prime}-bipyridine (bpy) ligand. Activation of bpy toward water addition has frequently been postulated within the literature, although there exists little definitive experimental evidence for this type of 'covalent hydration'. In this study, we examine the energetic dependence of the reaction upon metal oxidation state, overall spin state of the complex, as well as selectivity for various positions on the bipyridine ring. The thermodynamic favorability is found to be highly dependent upon all three parameters, with free energies of reaction that span favorable and unfavorable regimes. Aqueous addition to [(NH{sub 3}){sub 3}(bpy)Ru=O]{sup 3+} was found to be highly favorable for the S = 1/2 state, while reduction of the formal oxidation state on the metal center makes the reaction highly unfavorable. Examination of both facial and meridional isomers reveals that when bipyridine occupies the position trans to the ruthenyl oxo atom, reactivity toward OH addition decreases and the site preferences are altered. The electronic structure and spectroscopic signatures (EPR parameters and simulated spectra) have been determined to aid in recognition of 'covalent hydration' in experimental systems. EPR parameters are found to uniquely characterize the position of the OH addition to the bpy as well as the overall spin state of the system.

Ozkanlar, Abdullah; Cape, Jonathan L.; Hurst, James K.; Clark, Aurora E.

2011-09-05T23:59:59.000Z

252

Design of FePd spring actuators Taishi Wada*  

E-Print Network (OSTI)

. The coil spring made by a FSMA is activated by the attractive magnetic force produced by electromagnets on the above principle by using polycrystalline FePd alloy. Since the stiffness of the FePd coil spring become actuation. Keywords: actuator, coil spring, FePd, wire, ferromagnetic shape memory alloy, superelasticity

Taya, Minoru

253

Corrosion performance of Fe-Cr-Al and Fe aluminide alloys in complex gas environments  

SciTech Connect

Alumina-forming structural alloys can offer superior resistance to corrosion in the presence of sulfur-containing environments, which are prevalent in coal-fired fossil energy systems. Further, Fe aluminides are being developed for use as structural materials and/or cladding alloys in these systems. Extensive development has been in progress on Fe{sub 3}Al-based alloys to improve their engineering ductility. In addition, surface coatings of Fe aluminide are being developed to impart corrosion resistance to structural alloys. This paper describes results from an ongoing program that is evaluating the corrosion performance of alumina-forming structural alloys, Fe-Al and Fe aluminide bulk alloys, and Fe aluminide coatings in environments typical of coal-gasification and combustion atmospheres. Experiments were conducted at 650-1000{degrees}C in simulated oxygen/sulfur gas mixtures. Other aspects of the program are corrosion evaluation of the aluminides in the presence of HCl-containing gases. Results are used to establish threshold Al levels in the alloys for development of protective alumina scales and to determine the modes of corrosion degradation that occur in the materials when they are exposed to S/Cl-containing gaseous environments.

Natesan, K. [Argonne National Lab., IL (United States); Johnson, R.N. [Pacific Northwest Lab., Richland, WA (United States)

1995-05-01T23:59:59.000Z

254

Deep eutectic solvents (DES) as green reaction media for the redox isomerization of allylic alcohols into carbonyl compounds catalyzed by the ruthenium complex [Ru(?3:?3-C10H16)Cl2(benzimidazole)  

Science Journals Connector (OSTI)

Abstract The bis-allyl Ru(IV) complex [Ru(?3:?3-C10H16)Cl2(benzimidazole)] (1c) is an active catalyst in the redox isomerization of allylic alcohols into saturated carbonyl compounds using, for the first time, Deep eutectic solvents (DES) as reaction media. A series of primary and secondary allylic alcohols could be isomerized into the corresponding carbonyl compounds in the absence of base. Although high activities and selectivities were reached at short reaction times and with low catalyst loadings (0.2 mol% in Ru) for monosubstituted allylic alcohols, for their disubstituted counterparts, high catalyst loading and longer reaction times were always required. It is important to note that the catalytic system: i) is active in a large-scale experiment, and ii) could be recycled up to four consecutive runs.

Cristian Vidal; Francisco J. Suárez; Joaquín García-Álvarez

2014-01-01T23:59:59.000Z

255

Formation and ferromagnetic properties of FeSi thin films  

SciTech Connect

In this work, the growth and ferromagnetic properties of {epsilon}-FeSi thin film on Si(100) substrate prepared by molecular beam epitaxy are reported. The inter-diffusion of Fe layer on Si(100) substrate at 600 Degree-Sign C results in polycrystalline {epsilon}-FeSi layer. The determined activation energy was 0.044 eV. The modified magnetism from paramagnetic in bulk to ferromagnetic states in {epsilon}-FeSi thin films was observed. The saturated magnetization and coercive field of {epsilon}-FeSi film are 4.6 emu/cm{sup 3} and 29 Oe at 300 K, respectively.

Shin, Yooleemi; Anh Tuan, Duong; Hwang, Younghun; Viet Cuong, Tran; Cho, Sunglae [Department of Physics, University of Ulsan, Ulsan 680-749 (Korea, Republic of)

2013-05-07T23:59:59.000Z

256

Reaction characteristics of Al/Fe2O3 nanocomposites  

Science Journals Connector (OSTI)

Al/Fe2O3 nonacomposites have explosive and high exothermic properties by thermite reaction. In this study, Al/Fe2O3 xerogel nanocomposites were prepared by sol–gel method and thermite reaction performance was compared with those prepared by physical mixing with sonication. Scanning electron microscopy (SEM) images of Al/Fe2O3 xerogel nanocomposites show that network structure of Fe2O3 gel covers Al nanoparticles efficiently and this indicates that improvement of thermite reaction performance due to close contact between a fuel and an oxidizer. Optimum mole ratio of Al/Fe was determined to be 2 by thermite reaction performance by differential scanning calorimetry (DSC) analysis. At Al/Fe ratio of 2, thermite reaction enthalpy of the Al/Fe2O3 xerogel nancomposite was 991.4 J/g, which was higher by a factor of four than that of the nanocomposite prepared by physical mixing.

Moon-Soo Shin; Jae-Kyeong Kim; Jun-Woo Kim; Carlos Alberto Mendes Moraes; Hyoun-Soo Kim; Kee-Kahb Koo

2012-01-01T23:59:59.000Z

257

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

258

SiO MASERS IN ASYMMETRIC MIRAS. IV. {chi} CYGNI, R AQUILAE, R LEO MINORIS, RU HERCULIS, U HERCULIS, AND U ORIONIS  

SciTech Connect

This is the fourth paper in a series of multi-epoch observations at 7 mm wavelength of the SiO masers in several asymptotic giant branch stars from a sample of Mira variable stars showing evidence of asymmetric structure in the infrared. These stars have been observed interferometrically in the infrared by IOTA and with VLBA measurements of the SiO masers. In this paper, we present the observations of {chi} Cygni ({chi} Cyg), R Aquilae (R Aql), R Leo Minoris (R LMi), RU Herculis (RU Her), U Herculis (U Her), and U Orionis (U Ori). Several radial features with velocity gradients were observed, all with velocities close to systemic furthest from the star and redshifted closer to the stellar surface. Systemic velocities are estimated for several of the stars. No compelling evidence of asymmetry is seen in the maser distributions. All maser rings are approximately twice the near-IR uniform disk diameter and are comparable in size to the extended molecular envelope when such measurements are available.

Cotton, W. D. [National Radio Astronomy Observatory, 520 Edgemont Road, Charlottesville, VA 22903-2475 (United States); Ragland, S. [W. M. Keck Observatory, 65-1120 Mamalahoa Hwy, Kamuela, HI 96743 (United States); Pluzhnik, E. A. [NASA-Ames Research Center, Moffett Field, CA 94035 (United States); Danchi, W. C. [NASA Goddard Space Flight Center, Exoplanets and Stellar Astrophysics, Code 667, Greenbelt, MD 20771 (United States); Traub, W. A. [Jet Propulsion Laboratory, California Institute of Technology, M/S 301-451, 4800 Oak Grove Dr., Pasadena, CA 91109 (United States); Willson, L. A. [Department of Physics and Astronomy, Iowa State University, Ames, IA 50014 (United States); Lacasse, M. G., E-mail: bcotton@nrao.ed [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States)

2010-06-15T23:59:59.000Z

259

Magnetic interlayer exchange coupling in epitaxial Fe/Si/Fe(001) studied by polarized neutron reflectometry  

Science Journals Connector (OSTI)

Polarized neutron reflectometry (PNR) has been used to investigate the magnetic interlayer coupling in a MBE-grown Fe/Si/Fe(001) sandwich at room temperature and at 10 K. Both the magnitude and orientation of the magnetic moments of the Fe layers are obtained from a rigorous analysis of the PNR data. Orthogonal configurations of the Fe magnetizations were observed, providing unambiguous evidence for the presence of a biquadratic term in the exchange coupling energy. The competition between the bilinear and biquadratic exchange couplings results in distinct orthogonal and antiparallel configurations of the Fe magnetizations at room temperature. A previously unresolved magnetic configuration in the room-temperature hysteresis curve was identified by the PNR measurements as a 180° spin-flop transition. The dominant role of the biquadratic coupling at low temperatures is evident from the orthogonal configuration of the magnetizations at remanence in the measurements at T=10 K. The magnetic configurations deduced by PNR are in good agreement with those obtained by fitting the magnetic hysteresis loops using a global energy minimum calculation.

R. W. E. van de Kruijs; M. Th. Rekveldt; H. Fredrikze; J. T. Kohlhepp; J. K. Ha; W. J. M. de Jonge

2002-01-24T23:59:59.000Z

260

Hydrogen Storage Properties of New Hydrogen-Rich BH3NH3-Metal Hydride (TiH2, ZrH2, MgH2, and/or CaH2) Composite Systems  

SciTech Connect

Ammonia borane (AB = NH3BH3) is one of the most attractive materials for chemical hydrogen storage due to its high hydrogen contents of 19.6 wt.%, however, impurity levels of borazine, ammonia and diborane in conjunction with foaming and exothermic hydrogen release calls for finding ways to mitigate the decomposition reactions. In this paper we present a solution by mixing AB with metal hydrides (TiH2, ZrH2, MgH2 and CaH2) which have endothermic hydrogen release in order to control the heat release and impurity levels from AB upon decomposition. The composite materials were prepared by mechanical ball milling, and their H2 release properties were characterized by thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). The formation of volatile products from decomposition side reactions, such as borazine (N3B3H6) was determined by mass spectrometry (MS). Sieverts type pressure-composition-temperature (PCT) gas-solid reaction instrument was adopted to observe the kinetics of the H2 release reactions of the combined systems and neat AB. In situ 11B MAS-NMR revealed a destabilized decomposition pathway. We found that by adding specific metal hydrides to AB we can eliminate the impurities and mitigate the heat release.

Choi, Young Joon; Xu, Yimin; Shaw, Wendy J.; Ronnebro, Ewa

2012-04-19T23:59:59.000Z

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

Proteome of Geobacter sulfurreducens grown with Fe(III) oxide or Fe(III) citrate as the electron acceptor.  

SciTech Connect

e(III) oxides are the most abundant source of reducible Fe(III) by microorganisms in most soils and sediments, yet few studies on the physiology of Fe(III)-reducing microorganisms during growth on Fe(III) oxide have been conducted because of the technical difficulties in working with cell growth and harvest in the presence of Fe(III) oxides. Geobacter sulfurreducens is a representative of the Geobacter species that predominate in a variety of subsurface environments in which Fe(III) oxide is important. In order to better understand the physiology of Geobacter species during growth on Fe(III) oxide, the proteome of G. sulfurreducens grown on Fe(III) oxide was compared with the proteome of cells grown with soluble Fe(III) citrate. Two-dimensional polyacrylamide gel electrophoresis (2-D PAGE) revealed 19 proteins that were more abundant during growth on Fe(III) oxide than on soluble Fe(III). These included proteins related to protein synthesis, electron transfer and energy production, oxidative stress, protein folding, outer membrane proteins, nitrogen metabolism and hypothetical proteins. Further analysis of the proteome with the accurate mass and time (AMT) tag method revealed additional proteins associated with growth on Fe(III) oxide. These included the outer-membrane c-type cytochrome, OmcS and OmcG, which genetic studies have suggested are required for Fe(III) oxide reduction. Furthermore, several other cytochromes, as yet unstudied, were detected to be significantly up regulated during growth on Fe(III) oxide and other proteins of unknown function were more abundant during growth on Fe(III) oxide than on soluble Fe(III). PilA, the structural protein for pili, which is required for Fe(III) oxide reduction, and other pilin-associated proteins were also more abundant during growth on Fe(III) oxide. Confirmation of the differential expression of proteins known to be important in Fe(III) oxide reduction was observed, and an additional number of previously unidentified proteins were found with significant abundance in the cells grown under conditions of Fe(III) oxide reduction.

Ding, Y-H R.; Hixson, Kim K.; Aklujkar, Ma; Lipton, Mary S.; Smith, Richard D.; Lovley, Derek R.; Mester, Tunde

2008-12-01T23:59:59.000Z

262

Ru!fsa!!  

Office of Legacy Management (LM)

T h i s a v e r a g e behavio? i s shn.vn 1qr t h e s o l i c l l i n e labe1.led "observed d n i a . l t .:: For comparison we sho:v t h e 1i11e 1abel.lecl l'40 k t...

263

Photo- and thermal-induced antiferromagnetic interlayer coupling in Fe/(Fe-Si) superlattices  

SciTech Connect

We have grown via sputtering, Fe - iron silicide superlattices that exhibit novel thermal and photomagnetic effects. For {approximately}15 {Angstrom} nominal thickness of the silicide layer the superlattices are antiferromagnetically (AF) coupled at room temperature. Upon cooling below 100K, they gradually revert to ferromagnetic alignment, but the AF coupling is restored at low temperature by exposure to visible light off sufficient intensity (> 10 mW/mm{sup 2}). These effects are due to charge carriers in the silicide spacer layer which, when thermally or photo-generated, are capable of communicating spin information between the Fe layers.

Mattson, J.E.; Fullerton, E.E.; Kumar, S.; Lee, S.R.; Sowers, C.H.; Grimsditch, M.; Bader, S.D. [Argonne National Lab., IL (United States); Parker, F.T. [California Univ., San Diego, La Jolla, CA (United States). Center for Magnetic Recording Research

1993-08-01T23:59:59.000Z

264

Fuel Cells Catalyst for Start-up and Shutdown Conditions: Electrochemical, XPS, and TEM Evaluation of Sputter-Deposited Ru, Ir, and Ti on Pt-Nano-Structured Thin Film (NSTF) Support  

SciTech Connect

Minute amounts of Ru, Ir and Ti (2 and 10 g/cm2) sputter-deposited over 3M Pt-coated nano-structured thin film (NSTF) substrate were evaluated as oxygen evolution reaction (OER) catalysts in a polymer electrolyte membrane (PEM) environment. The purpose of the study was to explore the suitability of these elements for modifying both the anode and the cathode catalysts in order to lower the overpotential for the oxidation of water during transient conditions. By keeping the electrode potential as close as possible to the thermodynamic potential for OER, other components in the fuel cell, such as platinum, the gas diffusion layer and the bipolar plates, will be less prone to degradation. While Ru and Ir were chosen due to their high OER activity in aqueous environment, Ti was also included due to its ability to stabilize the OER catalysts. The 3M Pt-NSTF was selected as a stable, carbon-free substrate. The surface chemistry and the morphology of OER catalysts on Pt-NSTF were examined by x-ray photoelectron spectroscopy (XPS) and scanning transmission electron microscopy (STEM). The OER catalytic activity of Ru and Ir in PEMs compares well with their behavior in aqueous environment. It was found that Ru is more active than Ir, that Ir is considerably more stable, while the mass activity of both is higher in comparison with similar OER catalyst.

Atanasoski, Radoslav [3M Industrial Mineral Products; Atanasoska, Liliana [3M Industrial Mineral Products; Cullen, David A [ORNL; Vernstrom, George [3M Industrial Mineral Products; More, Karren Leslie [ORNL; Haugen, Gregory [3M Industrial Mineral Products

2012-01-01T23:59:59.000Z

265

Superconductivity in LiFeO2Fe2Se2 with anti-PbO-type spacer layers  

Science Journals Connector (OSTI)

We report on a superconductor LiFeO2Fe2Se2 with Tc?43 K, synthesized via the hydrothermal method. The anti-PbO-type spacer layer of LiFeO2 has been successfully intercalated between the anti-PbO-type FeSe layer, which results in a high-Tc superconductivity in this iron selenide material. In this material, the LiFeO2 layer is electrically neutral and does not act as an electron donor, which is remarkably different from other heavily electron-doped intercalated FeSe-derived superconductors. Based on our results and previous reports on FeSe-based superconductors, we figure out a V-shaped anion height from the Fe layer dependence of Tc in the FeSe-derived superconductors, which is in contrast to the inverse V-shaped one for the FeAs-based superconductors. Our studies expand the categories of the iron-based superconductors and open a door in the quest for potential superconductors with various spacer layers, which is helpful for the study of the underlying physics in iron-based high-Tc superconductors.

X. F. Lu; N. Z. Wang; G. H. Zhang; X. G. Luo; Z. M. Ma; B. Lei; F. Q. Huang; X. H. Chen

2014-01-22T23:59:59.000Z

266

XANES study of Fe-implanted strontium titanate  

SciTech Connect

Properties of strontium titanate SrTiO{sub 3} (STO) depend to a great extent on the substitutional dopants and defects of crystal structure. The ion beam implantation method was used for doping STO (001) crystals with Fe at different doses. Implanted samples were then annealed at 350°C in oxygen to induce recrystallization and remove oxygen vacancies produced during ion implantation process. The effect of Fe doping and post-implantation annealing was studied by X-ray Absorption Near Edge Spectroscopy (XANES) method and Superconducting Quantum Interference Device (SQUID). XANES allowed to monitor the change in structure of STO crystals and in the local environment of Fe following the implantation and annealing steps. SQUID measurements revealed correlation between magnetic moment and Fe implantation dose. Ferromagnetic hysteresis was observed on selected Fe-implanted STO at 5 K. The observed magnetic properties can be correlated with the several Fe oxide phases in addition to the presence of O/Ti vacancies.

Lobacheva, O.; Goncharova, L. V.; Chavarha, M.; Sham, T. K. [Department of Physics and Astronomy, and Department of Chemistry, University of Western Ontario, London, ON N6A 5B7 (Canada)

2014-03-31T23:59:59.000Z

267

Investigation of the Fe1+xSb system  

Science Journals Connector (OSTI)

X-ray diffraction, bulk magnetization, and Fe57 Mössbauer spectroscopic measurements on Fe1+xSb system for various values of x (0.14?x?0.35) are reported. The x-ray data suggest that the ASTM (American Society for Testing and Materials) data file for Fe1+xSb should be modified. The lattice Néel temperatures obtained from magnetic susceptibility and Mössbauer spectroscopic measurements are in nice agreement with each other and decrease linearly with increase in x. The Néel temperatures for the ordering of interstitial Fe atoms are higher than 60 K and increase with x. The low-temperature Mössbauer spectra have been analyzed in terms of a Lorentzian distribution of the magnetic hyperfine field at lattice sites, a low-field site, and a relatively high-field interstitial site. Also included are comments on the low magnetic moment of Fe in Fe1+xSb.

R. Kumar; K. S. Harchand; Vishwamittar; K. Chandra; P. Jernberg; T. Ericsson; R. Wappling

1985-07-01T23:59:59.000Z

268

Magnetism of Mn layers on Fe(100)  

Science Journals Connector (OSTI)

The magnetic state of epitaxial overlayers of Mn grown on Fe(100) is studied using spin-polarized electron energy loss spectroscopy. Nonzero exchange asymmetries are found, demonstrating that the surface layer of the Mn overlayers has a net magnetic moment. The exchange asymmetry oscillates with a period of about two atomic layers as the Mn overlayer thickness is varied, proving that the Mn forms ferromagnetic (100) sheets and that the sheets align antiferromagnetically. The average Mn exchange splitting is found to be 2.9 eV, indicating a magnetic moment of the order 3?B.

T. G. Walker and H. Hopster

1993-08-01T23:59:59.000Z

269

DE-FE0012965 | netl.doe.gov  

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

Development of a Precombustion Carbon Dioxide Capture Process Using High Temperature Polybenzimidazole Hollow-Fiber Membrane Project No.: DE-FE0012965 SRI is conducting a...

270

Los Alamos National Security invests in Santa Fe Community College  

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

invests in Santa Fe Community College Foundation July 16, 2009 College plans Sustainable Technology Center Los Alamos, New Mexico, July 16, 2009-Representatives from Los Alamos...

271

Isolation and microbial reduction of Fe(III) phyllosilicates...  

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

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...

272

Building operator certification offered in Santa Fe next year  

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

The coursework is provided by the Santa Fe Community College's Center of Excellence in Green Building and Energy Efficiency. January 1, 2013 dummy image Read our archives....

273

FE Leaders Discuss African Energy Development | Department of...  

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

Discuss African Energy Development August 5, 2014 - 2:28pm Addthis FE's Christopher Smith spoke recently during the Africa Leaders Visit: Energy event in Houston. During...

274

Structure and Properties of Magnetic (Co, Fe, Fe{sub 3}C and Ni) Carbon Beads  

SciTech Connect

Nanoparticles exhibit unique physical properties due to the surface or quantum-size effects. Particular attention has been focused on magnetic nanoparticles and substantial progress has been done in this field. In this work magnetic composites, consisting of elementary metals or carbides nanocrystallites, stabilized in carbon matrix, were prepared by the procedure comprising formation of appropriate metal acrylamide complexes, followed by frontal polymerization and pyrolysis of the polymer at various temperatures. Application of frontal polymerization and further pyrolysis enables formation of composite beads consisting of Co, Fe, Fe{sub 3}C or Ni nanocrystallites stabilized in carbon matrix. It was found that the lowest pyrolysis temperature, which enables the production of metallic nanocrystallites, was 673 K for Co and Ni, and 773 K for Fe. The magnetic properties of the beads, percentage of the metallic component, their composition and shape depended on the pyrolysis temperature. Extracts on the basis of composites containing Fe{sub 3}C showed no cytotoxicity, whereas those containing Co and Ni exhibited negligible cytotoxicity up to concentrations of 6.25 mg/ml.

Leonowicz, Marcin; Izydorzak, Marta [Faculty of Materials Science and Engineering, Warsaw University of Technology, Woloska 141, 02-507 Warsaw (Poland); Pomogailo, Anatolii D.; Dzhardimalieva, Gulzhian I. [Institute of Chemical Physics RAS, Chernogolovka (Russian Federation)

2010-12-02T23:59:59.000Z

275

Surface species formed by the adsorption and dissociation of water molecules on Ru(0001) surface containing a small coverage of carbon atoms studied by scanning tunneling microscopy  

SciTech Connect

The adsorption and dissociation of water on a Ru(0001) surface containing a small amount ({le} 3 %) of carbon impurities was studied by scanning tunneling microscopy (STM). Various surface species are formed depending on the temperature. These include molecular H{sub 2}O, H{sub 2}O-C complexes, H, O, OH and CH. Clusters of either pure H{sub 2}O or mixed H{sub 2}O-OH species are also formed. Each of these species produces a characteristic contrast in the STM images and can be identified by experiment and by ab initio total energy calculations coupled with STM image simulations. Manipulation of individual species via excitation of vibrational modes with the tunneling electrons has been used as supporting evidence.

Dept of Materials Science and Engineering UCB; Dept of Applied Science and Technology, UCB; Institut de Ciencia de Materials de Barcelona, Barcelona, Spain; Instituto de Ciencia de Materiales de Madrid, Madrid, Spain; Department of Mechanical Engineering, Yale University; Salmeron, Miquel; Shimizu, Tomoko K.; Mugarza, Aitor; Cerda, Jorge I.; Heyde, Markus; Qi, Yabing; Schwarz, Udo D.; Ogletree, D. Frank; Salmeron, Miquel

2008-04-26T23:59:59.000Z

276

Optical properties of boron carbide near the boron K edge evaluated by soft-x-ray reflectometry from a Ru/B4C multilayer  

SciTech Connect

Soft-x-ray Bragg reflection from two Ru/B4C multilayers with 10 and 63 periods was used for independent determination of both real and imaginary parts of the refractive index n = 1 -{delta} + i{beta} close to the boron K edge ({approx}188 eV). Prior to soft x-ray measurements, the structural parameters of the multilayers were determined by x-ray reflectometry using hard x rays. For the 63-period sample, the optical properties based on the predictions made for elemental boron major deviations were found close to the K edge of boron for the 10-period sample explained by chemical bonding of boron to B4C and various boron oxides.

Ksenzov, Dmitriy; Panzner, Tobias; Schlemper, Christoph; Morawe, Christian; Pietsch, Ullrich

2009-12-10T23:59:59.000Z

277

Advances in Fe(VI) charge storage: Part I. Primary alkaline super-iron batteries  

Science Journals Connector (OSTI)

Recent advances in super-iron batteries, based on an unusual Fe(VI) cathodic charge storage, are presented. Fe(VI) cathodes that have been demonstrated in super-iron batteries include the synthesized Fe(VI) compound with three-electron cathodic charge capacity Na2FeO4, K2FeO4, Rb2FeO4, Cs2FeO4 (alkali Fe(VI) salts), alkali earth Fe(VI) salts BaFeO4, SrFeO4, and also a transition Fe(VI) salt Ag2FeO4 which exhibits a five-electron cathodic charge storage. This paper focus on the primary alkaline Fe(VI) charge storage in aqueous electrolyte systems. Primary alkaline super-iron batteries exhibit a higher capacity than conventional alkaline batteries. Configuration optimization, enhancement and mediation of Fe(VI) cathode charge transfer of primary Fe(VI) alkaline batteries are summarized. Composite Fe(VI)/Mn(IV or VII), Fe(VI)/Ag(II) and zirconia coating stabilized Fe(VI)/Ag(II) cathode alkaline batteries are also illustrated.

Xingwen Yu; Stuart Licht

2007-01-01T23:59:59.000Z

278

F.E. Math Review University of Utah  

E-Print Network (OSTI)

_materials/Download_FE_Supplied- Reference_Handbook.php or google "fe handbook" and click the first link) Fundamentals of EngineeringF.E. Math Review University of Utah © 2011 Dr. Stacy Morris Bamberg Fundamentals of Engineering/question · Examples today from 1001 Solved Engineering Fundamentals Problems ­ Michael R. Lindeburg PE (Professional

Provancher, William

279

Hydrogen decrepitation of sintered NdFeB magnets  

SciTech Connect

The kinetics of the hydrogen absorption and desorption behavior of a NdFeB sintered magnet is studied. Hydrogenation at temperatures above 200 C is used to crumble the Nd-enriched phase. The grains of Nd{sub 2}Fe{sub 14}B phase remain undamaged. Hydrogen desorption occurs in several stages and is complete at approximately 400 C.

Stiller, C.; Roth, S.; Binner, A. [Inst. fuer Festkoerper- und Werkstofforschung Dresden e.V. (Germany)] [Inst. fuer Festkoerper- und Werkstofforschung Dresden e.V. (Germany)

1994-03-01T23:59:59.000Z

280

Synthesis and Characterization of Ferroferriborate (Fe3BO5) Nanorods  

E-Print Network (OSTI)

a number of interesting properties, including its catalytic oxidation of ethyl acetate and methanol[5] and Fe3BO5 and GdBO3 particles produced from interface diffusion between Fe­Gd particle cores and B2O3/H3) could be used as a weak reducing agent for producing Au and Pd nanoparticles in the presence of oleyl

Wang, Zhong L.

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

Synthesis and properties of titanomagnetite (Fe3-xTixO4) nanoparticles...  

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

properties of titanomagnetite (Fe3-xTixO4) nanoparticles: A tunable solid-state Fe(IIIII) redox system. Synthesis and properties of titanomagnetite (Fe3-xTixO4) nanoparticles: A...

282

Graphene-wrapped Fe2O3 nanorings for Li ion battery anodes  

Science Journals Connector (OSTI)

Graphene-wrapped Fe2O3 nanorings (RGO/Fe2O3...) were synthesized by a facile approach, which assembled with graphene and the Fe2O3 nanorings precursor through the colloidal coagulation effect at room temperature....

Lili Wang; Qiushi Chen; Yongchun Zhu; Yitai Qian

2014-11-01T23:59:59.000Z

283

Cheniere Marketing, LLC - FE Dkt. No. 14-31-LNG (Re-export) ...  

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

Cheniere Marketing, LLC - FE Dkt. No. 14-31-LNG (Re-export) Cheniere Marketing, LLC - FE Dkt. No. 14-31-LNG (Re-export) The Office of Fossil Energy (FE) of the Department of Energy...

284

Microbial Reduction of Structural Fe(III) in Illite and Goethite...  

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

Structural Fe(III) in Illite and Goethite. Microbial Reduction of Structural Fe(III) in Illite and Goethite. Abstract: Microbial Reduction of Structural Fe(III) in Illite and...

285

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

286

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

287

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

288

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

289

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

290

Interface structures in FePtFe3Pt hard-soft exchange-coupled magnetic nanocomposites  

E-Print Network (OSTI)

Interface structures in FePtÃ?Fe3Pt hard-soft exchange-coupled magnetic nanocomposites Jing Li with sizes 10 nm. This ensures the effective exchange coupling of magnetically hard and soft phases. High magnetic materials, the performance of conventional bulk permanent magnetic ma- terials is limited by its

Liu, J. Ping

291

Enhanced coercivity in thermally processed ,,Nd,Dy...,,Fe,Co,Nb,B...5.5/ -Fe nanoscale multilayer magnets  

E-Print Network (OSTI)

and theoretical research has been done on exchange-coupled hard-soft1­14 permanent magnets. However, up to now, ex, the addition of the soft phase to the hard phase enhances the remanence but deteriorates the permanent-magnet,10 exchange-coupled -Fe/Nd­Fe­B multilayer magnets as investigated by Shindo et al.11 the Nd

Liu, J. Ping

292

Physica B 322 (2002) 236247 The electronic properties of FeCo, Ni3Mn and Ni3Fe  

E-Print Network (OSTI)

1. Introduction The Fe- and Mn-based transition metal (TM) alloys possess a number of unusual with the local-density functional method. It is shown that the value of the magnetic moment is insensitive- stant and magnetization of Fe­Co alloys depend non-monotonically on Co concentration, and change

Kim, Jai Sam

293

Rauchfuss Group Prep of Fe2S2(CO)6 Large Scale Synthesis of Fe2S2(CO)6.  

E-Print Network (OSTI)

Rauchfuss Group Prep of Fe2S2(CO)6 Large Scale Synthesis of Fe2S2(CO)6. A three neck, 5-liter round was filtered though a small plug of Celite to remove elemental sulfur. Solvent was removed, and the solid and reduced pressure. We do not recommend sublimation as a method of purification. IR (pentanes): 2084 (s

Rauchfuss, Thomas B.

294

Biostimulation of Iron Reduction and Subsequent Oxidation of Sediment Containing Fe-silicates and Fe-oxides: Effect of Redox Cycling on Fe(III) Bioreduction  

SciTech Connect

Microbial reduction of iron has been shown to be important in the transformation and remediation of contaminated sediments. Re-oxidation of microbially reduced iron may occur in sediments that experience oxidation-reduction cycling and can thus impact the extent of contaminant remediation. The purpose of this research was to quantify iron oxidation in a flow-through column filled with biologically-reduced sediment and to compare the iron phases in the re-oxidized sediment to both the pristine and biologically-reduced sediment. The sediment contained both Fe(III)-oxides (primarily goethite) and silicate Fe (illite/vermiculite) and was biologically reduced in phosphate buffered (PB) medium during a 497 day column experiment with acetate supplied as the electron donor. Long-term iron reduction resulted in partial reduction of silicate Fe(III) without any goethite reduction, based on Mössbauer spectroscopy measurements. This reduced sediment was treated with an oxygenated PB solution in a flow-through column resulting in the oxidation of 38% of the biogenic Fe(II). Additional batch experiments showed that the Fe(III) in the oxidized sediment was more quickly reduced compared to the pristine sediment, indicating that oxidation of the sediment not only regenerated Fe(III) but also enhanced iron reduction compared to the pristine sediment. Oxidation-reduction cycling may be a viable method to extend iron-reducing conditions during in-situ bioremediation.

Komlos, John; Kukkadapu, Ravi K.; Zachara, John M.; Jaffe, Peter R.

2007-07-01T23:59:59.000Z

295

Effect of Extent of Natural Subsurface Bioreduction on Fe-mineralogy...  

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

Extent of Natural Subsurface Bioreduction on Fe-mineralogy of Subsurface Sediments. Effect of Extent of Natural Subsurface Bioreduction on Fe-mineralogy of Subsurface Sediments....

296

Immobilization of 99-Technetium (VII) by Fe(II)-Goethite and...  

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

Immobilization of 99-Technetium (VII) by Fe(II)-Goethite and Limited Reoxidation. Immobilization of 99-Technetium (VII) by Fe(II)-Goethite and Limited Reoxidation. Abstract:...

297

Bioavailability of Fe(III) in Loess Sediments: An Important Source...  

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

Bioavailability of Fe(III) in Loess Sediments: An Important Source of Electron Acceptors. Bioavailability of Fe(III) in Loess Sediments: An Important Source of Electron Acceptors....

298

E-Print Network 3.0 - alloyed fe-mo powder Sample Search Results  

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

of Magnetism and Magnetic Materials 213 (2000) 111116 Magnetic properties of transition-metal-doped a-Fe Summary: automated powder dirac- tometer, and room temperature Fe...

299

Microsoft Word - PtxY bh  

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

of PEMFCs has been hampered by the need for a large amount of platinum catalyst at the cathode, where oxygen reduction takes place. Even with current state-of-the-art technology,...

300

Microsoft Word - ArtificialPhotosynthesis bh  

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

electrochemical cell setup for ambient- pressure XPS investigations of artificial photosynthesis process In Situ X-ray Photoelectron Spectroscopy of a Catalyst for Artificial...

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


301

Physical Properties of Intermetallic FE2VA1  

SciTech Connect

Fe{sub 2}VAl has recently been discovered to have a negative temperature coefficient of resistivity, moderately enhanced specific heat coefficient, and a large DOS at the Fermi level by photoemission. This triggered a round of heated research to understand the ground state of this material, both theoretically and experimentally. here they report a comprehensive characterization of Fe{sub 2}VAl. X-ray diffraction exhibited appreciable antisite disorder in all of our samples. FTIR spectroscopy measurements showed that the carrier density and scattering time had little sample-to-sample variation or temperature dependence for near-stoichiometric samples. FTIR and DC resistivity suggest that the transport properties of Fe{sub 2}VAl are influenced by both localized and delocalized carriers, with the former primarily responsible for the negative temperature coefficient of resistivity. Magnetization measurements reveal that near-stoichiometric samples have superparamagnetic clusters with at least two sizes of moments. X-ray photoemission from Fe core level showed localized magnetic moments on site-exchanged Fe. They conclude that in Fe{sub 2}VAl, antisite disorder causes significant modification to the semi-metallic band structure proposed by LDA calculations. With antisite disorder considered, they are now able to explain most of the physical properties of Fe{sub 2}VAl.

Ye Feng

2002-05-30T23:59:59.000Z

302

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

303

Catalysis of the reaction of methallyl chloride with CCl4 by some iron compounds or the system: Fe(CO)5-solvent  

Science Journals Connector (OSTI)

1. A study was made of the catalytic effect of Fe(CO)5, Fe2(CO)9, Fe(acetylacetonate)3, FeCl3,?-C3H5Fe(CO)3I, an...

R. D. Ismailov; A. E. Zolotarev…

1973-04-01T23:59:59.000Z

304

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

305

DE-FE0010195 | netl.doe.gov  

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

Development of a Scientific Plan for a Hydrate-Focused Marine Drilling, Logging and Coring Program Last Reviewed 272014 DE-FE0010195 Goal The primary goal of this research is to...

306

DE-FE0013755 | netl.doe.gov  

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

Pilot-Scale Silicone Process for Low-Cost Carbon Dioxide Capture Project No.: DE-FE0013755 General Electric is using a novel silicone solvent to capture CO2 with a continuous...

307

de-fe0013105 | netl.doe.gov  

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

Pilot Testing of a Highly Effective Pre-Combustion Sorbent-Based Carbon Capture System Project No.: DE-FE0013105 TDA is developing a new sorbent-based pre-combustion carbon capture...

308

DE-FE0012959 | netl.doe.gov  

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

Development of Mixed-Salt Technology for Carbon Dioxide Capture from Coal Power Plants Project No.: DE-FE0012959 SRI is testing a newly developed, low-cost, ammonia-based,...

309

DE-FE00013123 | netl.doe.gov  

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

Post-combustion CO2 Capture Project No.: DE-FE00013123 SRI is incorporating an advanced carbon capture sorbent-based process in a 1 MWe slipstream pilot plant that will reduce...

310

Fast neutron Damage Studies on NdFeB Materials  

E-Print Network (OSTI)

used in the SLAC Photon and Neutron Fields”, SLAC-PUB-8517,SLAC-PUB-11219 May2005 Fast Neutron Damage Studies on NdFeBrst mea- surements of fast neutron, stepped doses at the UC

2005-01-01T23:59:59.000Z

311

FWP04FE12 | netl.doe.gov  

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

Power Generation in Natural Gas Pipelines FWP04FE12 Goal: Los Alamos National Laboratory (LANL) will evaluate the concept of power generation from natural gas flow in a pipeline,...

312

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

313

Biomineralization Associated with Microbial Reduction of Fe3...  

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

used as the sole electron donor. The oxidation of FeS occurred only at pH 10, and goethite, lepidocrocite, and ferrihydrite formed as oxidation products. Although molecular...

314

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

315

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

SciTech Connect

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

316

Ru?Alkylidene Metathesis Catalysts Based on 1,3-Dimesityl-4,5,6,7-tetrahydro-1,3-diazepin-2-ylidenes: Synthesis, Structure, and Activity  

Science Journals Connector (OSTI)

V.) IOM, Permoserstrasse 15, D-04318 Leipzig, Germany, Institut für Allgemeine, Anorganische and Theoretische Chemie, Universität Innsbruck, Innrain 52 a, A-6020 Innsbruck, Austria, and Institut für Technische Chemie, Universität Leipzig, Linnéstrasse 3, D-04103 Leipzig, Germany ... Thus, the free carbene was generated by the use of KN(SiMe3)2 in n-hexane at room temperature and was subsequently reacted with the first-generation Grubbs?Hoveyda catalyst RuCl2(PCy3)(?CH-2-(2-PrO)C6H4) at 50 °C to yield complex 2 as a light yellow-green solid in 67% isolated yield (Scheme 1). ... GC?MS investigations were carried out on a Shimadzu GCMS-QP5050 with an AOC-20i Autosampler, using a SPB fused silica (Rxi-5MS) column (30 m × 0.25 mm × 0.25 ?m film thickness), and on a Shimadzu GCMS-QP2010S equipped with an AOC-20i Autosampler using a SPB fused silica (Rxi-5MS) column (30 m × 0.25 mm × 0.25 ?m film thickness), respectively. ...

P. Santhosh Kumar; Klaus Wurst; Michael R. Buchmeiser

2009-02-18T23:59:59.000Z

317

Deformation effects and neutrinoless positron ?? decay of Ru96, Pd102, Cd106, Xe124, Ba130, and Dy156 isotopes within a mechanism involving Majorana neutrino mass  

Science Journals Connector (OSTI)

The (?+?+)0? and (??+)0? modes of Ru96, Pd102, Cd106, Xe124, Ba130, and Dy156 isotopes are studied in the projected Hartree-Fock-Bogoliubov framework for the 0+?0+ transition. The reliability of the intrinsic wave functions required to study these decay modes has been established in our earlier works by obtaining an overall agreement between the theoretically calculated spectroscopic properties, namely yrast spectra, reduced B(E2:0+?2+) transition probabilities, quadrupole moments Q(2+) and gyromagnetic factors g(2+), and the available experimental data in the parent and daughter even-even nuclei. In the present work, the required nuclear transition matrix elements are calculated in the Majorana neutrino mass mechanism using the same set of intrinsic wave functions as used to study the two neutrino positron double-? decay modes. Limits on effective light neutrino mass ?m?? and effective heavy neutrino mass ?MN? are extracted from the observed limits on half-lives T1/20?(0+?0+) of (?+?+)0? and (??+)0? modes. We also investigate the effect of quadrupolar correlations vis-a-vis deformation on nuclear transition matrix elements (NTMEs) required to study the (?+?+)0? and (??+)0? modes.

P. K. Rath, R. Chandra, K. Chaturvedi, P. K. Raina, and J. G. Hirsch

2009-10-06T23:59:59.000Z

318

Atom probe: a direct technique for kinetic measurements. [Fe-24Cr; Fe-32Cr; Fe-28. 5Cr-10. 6Co  

SciTech Connect

The atom probe has been used to study the phase transformations occurring within the low-temperature miscibility gaps in Fe-Cr and Fe-Cr-Co alloys. The morphology of the two-phase microstructure resulting from phase separation deep within the miscibility gaps was found to be highly interconnected and charactristic of an isotropic spinodal reaction. The characteristic dimensions of the microstructure and the changes in composition were measured as a function of aging. The coarsening of the network structures could be fitted with a power law with time exponents that were significantly less than the classical Lifshitz-Slyozov-Wagner value of one-third.

Miller, M.K.; Brenner, S.S.; Camus, P.P.; Soffa, W.A.

1984-04-04T23:59:59.000Z

319

Crystal structure, magnetism and transport properties of Ce{sub 3}Ni{sub 25.75}Ru{sub 3.16}Al{sub 4.1}B{sub 10}  

SciTech Connect

Single crystals of Ce{sub 3}Ni{sub 25.75}Ru{sub 3.16}Al{sub 4.1}B{sub 10} were obtained from a process in which a polycrystalline sample of CeRu{sub 2}Al{sub 2}B was annealed in an excess of a Ni–In flux. The initial phase, CeRu{sub 2}Al{sub 2}B, does not recrystallize, instead, crystals of a new phase, Ce{sub 3}Ni{sub 25.75}Ru{sub 3.16}Al{sub 4.1}B{sub 10}, could be isolated once the flux was removed. The title compound crystallizes in the tetragonal space group P4/nmm (No. 129) with a=1139.02(8), c=801.68(6) pm (c/a=0.70) in the Nd{sub 3}Ni{sub 29}Si{sub 4}B{sub 10} structure type. Electrical resistivity measurements reveal metallic behavior with a minimum of 700 µ? cm and a small residual resistivity ratio of RRR=1.4 indicating a large amount of disorder scattering. The cerium atoms are either in the 4+ or an intermediate valence state with a valence fluctuation temperature far above room temperature. - Graphical abstract: Single crystals of Ce{sub 3}Ni{sub 25.75}Ru{sub 3.16}A{sub l4.1}B{sub 10} were obtained using a process in which a polycrystalline sample of CeRu{sub 2}Al{sub 2}B was annealed in an excess of a Ni–In flux. Electrical resistivity measurements reveal metallic behavior with a minimum of 700 ?? cm and a small residual resistivity ratio of RRR=1.4 indicating a large amount of disorder scattering. The cerium atoms are either in the 4+ or an intermediate valence state with a valence fluctuation temperature far above room temperature. Display Omitted - Highlights: • Flux synthesis of high quality single crystals of Ce{sub 3}Ni{sub 25.75}Ru{sub 3.16}Al{sub 4.1}B{sub 10} is presented along with the crystal structure, magnetic and transport properties. • The compound is isostructural to Nd{sub 3}Ni{sub 29}Si{sub 4}B{sub 10} but is first of this structure type showing mixed occupancies of d-elements. • This is an intermetallic phase with Ce in either the 4+ or an intermediate valence state. • The fact that this structure with mixed occupied transition metal sites exists suggests that more compounds of this type should be accessible and the physical properties tuned.

Janka, Oliver [Department of Chemistry, University of California, One Shields Ave, Davis, CA 95616 (United States); Baumbach, Ryan E.; Thompson, Joe D. [Los Alamos National Laboratory, Los Alamos, NM 87545 (United States); Bauer, Eric D., E-mail: edbauer@lanl.gov [Los Alamos National Laboratory, Los Alamos, NM 87545 (United States); Kauzlarich, Susan M., E-mail: smkauzlarich@ucdavis.edu [Department of Chemistry, University of California, One Shields Ave, Davis, CA 95616 (United States)

2013-09-15T23:59:59.000Z

320

MEASUREMENT OF THE Fe VIII-Fe XVI 3-3 EMISSION IN THE EXTREME ULTRAVIOLET AND COMPARISON WITH CHIANTI  

SciTech Connect

Laboratory measurements of the n = 3 to n = 3 emission from M-shell iron ions are presented and compared to synthetic spectra from the CHIANTI spectral model. The measurements cover the range 170-290 Angstrom-Sign and are made at an electron density of about 10{sup 11} cm{sup -3}. Emission from Fe VIII through Fe XVI has been identified. Excellent agreement with CHIANTI predictions is found for most lines. Twenty weaker features are noted in the laboratory data that are either absent in CHIANTI or have recently been added and correspond to lines that have not been verified by experimental measurements. A few of these lines may have already been observed (but not yet identified) in the Sun. The features are attributed to emission from various charge states of iron, notably Fe IX and Fe XIII, and two features have been identified as transitions in Fe VIII, i.e., the 3p{sup 6}3d {sup 2}D{sub 5/2}-3p {sup 5}3d{sup 2} {sup 2}P{sub 3/2} and the 3p {sup 6}3d {sup 2}D{sub 3/2}-3p {sup 5}3d{sup 2} {sup 2}P{sub 1/2} transitions at 225.25 {+-} 0.12 and 226.35 {+-} 0.10 Angstrom-Sign , respectively. Seven lines in Fe XI, Fe XII, and Fe XIII between 200 and 205 Angstrom-Sign are noted for which the wavelengths in the CHIANTI database disagree with those in the current database of the National Institute of Standards and Technology. Our measurements of five of these lines appear to agree with the assignments used in CHIANTI.

Beiersdorfer, P.; Lepson, J. K. [Space Sciences Laboratory, University of California, Berkeley, CA 96720 (United States)

2012-08-01T23:59:59.000Z

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

Campbell penetration depth in Fe-based superconductors  

SciTech Connect

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

322

Catalytic Properties of MnO, Fe2O3, and MnFe2O4 in the Steam Reforming of Ethanol  

Science Journals Connector (OSTI)

The catalytic activity of manganese ferrite MnFe2O4 and the oxides MnO and Fe2O3 in the steam reforming of ethanol (SRE) has been studied. The similarity...2O3 and MnFe2O4 has been established which may indicate ...

L. Yu. Dolgykh; I. L. Stolyarchuk; L. A. Staraya…

2014-09-01T23:59:59.000Z

323

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.

324

Heterogeneous reduction of Tc(VII) by Fe(II) at the solid–water interface  

Science Journals Connector (OSTI)

Experiments were performed herein to investigate the rates and products of heterogeneous reduction of Tc(VII) by Fe(II) adsorbed to hematite and goethite, and by Fe(II) associated with a dithionite–citrate–bicarbonate (DCB) reduced natural phyllosilicate mixture [structural, ion-exchangeable, and edge-complexed Fe(II)] containing vermiculite, illite, and muscovite. The heterogeneous reduction of Tc(VII) by Fe(II) adsorbed to the Fe(III) oxides increased with increasing pH and was coincident with a second event of Fe 2 + (aq) adsorption. The reaction was almost instantaneous above pH 7. In contrast, the reduction rates of Tc(VII) by DCB-reduced phyllosilicates were not sensitive to pH or to added Fe 2 + (aq) that adsorbed to the clay. The reduction kinetics were orders of magnitude slower than observed for the Fe(III) oxides, and appeared to be controlled by structural Fe(II). The following affinity series for heterogeneous Tc(VII) reduction by Fe(II) was suggested by the experimental results: aqueous Fe(II) ? adsorbed Fe(II) in phyllosilicates [ion-exchangeable and some edge-complexed Fe(II)] ? structural Fe(II) in phyllosilicates ? Fe(II) adsorbed on Fe(III) oxides. Tc-EXAFS spectroscopy revealed that the reduction products were virtually identical on hematite and goethite that were comprised primarily of sorbed octahedral TcO2 monomers and dimers with significant Fe(III) in the second coordination shell. The nature of heterogeneous Fe(III) resulting from the redox reaction was ambiguous as probed by Tc-EXAFS spectroscopy, although Mössbauer spectroscopy applied to an experiment with 56Fe-goethite with adsorbed 57Fe(II) implied that redox product Fe(III) was goethite-like. The Tc(IV) reduction product formed on the DCB-reduced phyllosilicates was different from the Fe(III) oxides, and was more similar to Tc(IV) oxyhydroxide in its second coordination shell. The heterogeneous reduction of Tc(VII) to less soluble forms by Fe(III) oxide-adsorbed Fe(II) and structural Fe(II) in phyllosilicates may be an important geochemical process that will proceed at very different rates and that will yield different surface species depending on subsurface pH and mineralogy.

T. Peretyazhko; J.M. Zachara; S.M. Heald; B.-H. Jeon; R.K. Kukkadapu; C. Liu; D. Moore; C.T. Resch

2008-01-01T23:59:59.000Z

325

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

SciTech Connect

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

326

Electron-Ion Recombination Rate Coefficients and Photoionization Cross Sections for Astrophysically Abundant Elements. V. Relativistic calculations for Fe XXIV and Fe XXV for X-ray modeling  

E-Print Network (OSTI)

Photoionization and recombination cross sections and rate coefficients are calculated for Li-like Fe XXIV and He-like Fe XXV using the Breit-Pauli R-matrix (BPRM) method. A complete set of total and level-specific parameters is obtained to enable X-ray photoionization and spectral modeling. The ab initio calculations for the unified (e + ion) recombination rate coefficients include both the non-resonant and the resonant recombination (radiative and di-electronic recombination, RR and DR, respectively) for (e + Fe XXV) -> Fe XXIV and (e + Fe XXVI) -> Fe XXV. The level specific rates are computed for all fine structure levels up to n = 10, enabling accurate computation of recombination-cascade matrices and effective rates for the X-ray lines. The total recombination rate coefficients for both Fe XXIV and Fe XXV differ considerably, by several factors, from the sum of RR and DR rates currently used to compute ionization fractions in astrophysical models. As the photoionization/recombination calculations are carried out using an identical eigenfunction expansion, the cross sections for both processes are theoretically self-consistent; the overall uncertainty is estimated to be about 10-20%. All data for Fe XXIV and Fe XXV (and also for H-like Fe XXVI, included for completeness) are available electronically.

Sultana N. Nahar; Anil K. Pradhan; Hong Lin Zhang

2000-08-01T23:59:59.000Z

327

Electronic Structure of CeFeAsO1-xFx (x=0, 0.11/x=0.12) compounds  

E-Print Network (OSTI)

structure of the high-temperature superconductor CeFeAsOthe Fe-based high temperature superconductor CeFeAsO 0.89 F

Bondino, F.

2011-01-01T23:59:59.000Z

328

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

329

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":""}]}

330

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

331

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

332

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":""}]}

333

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

334

Formation of FePt nanoparticles by organometallic synthesis  

SciTech Connect

Our interest in determining the mechanism of FePt nanoparticle formation has led to this study of the evolution of particle size and composition during synthesis. FePt nanoparticles were prepared by the simultaneous reduction of platinum acetylacetonate and thermal decomposition of iron pentacarbonyl. During the course of the reaction, samples were removed and the particle structure, size, and composition were determined using x-ray diffraction, transmission electron microscopy (TEM), and scanning electron microscopy-energy dispersive x-ray spectrometry. Early in the reaction the particles were Pt rich (greater than 95 at. % Pt) and as the reaction proceeded the Fe content increased to the target of 50%. The particle diameter increased from 3.1 to 4.6 nm during the reaction. Energy dispersive x-ray spectrometry measurements of individual particle compositions using a high resolution TEM showed a broad distribution of particle compositions with a standard deviation greater than 15% of the average composition.

Bagaria, H. G.; Johnson, D. T.; Srivastava, C.; Thompson, G. B.; Shamsuzzoha, M.; Nikles, D. E. [Department of Chemical and Biological Engineering, The University of Alabama, P.O. Box 870203, Tuscaloosa, Alabama 35487 and Center for Materials for Information Technology, The University of Alabama, P.O. Box 870209, Tuscaloosa, Alabama 35487 (United States); Department of Metallurgical and Materials Engineering, The University of Alabama, P.O. Box 870202, Tuscaloosa, Alabama 35487 and Center for Materials for Information Technology, The University of Alabama, P.O. Box 870209, Tuscaloosa, Alabama 35487 (United States); School of Mines and Energy Development, The University of Alabama, Tuscaloosa, Alabama 35487 (United States); Department of Chemistry, The University of Alabama, P.O. Box 870336, Tuscaloosa, Alabama 35487 and Center for Materials for Information Technology, The University of Alabama, P.O. Box 870209, Tuscaloosa, Alabama 35487 (United States)

2007-05-15T23:59:59.000Z

335

Bimetallic Fe-Ni Oxygen Carriers for Chemical Looping Combustion  

SciTech Connect

The relative abundance, low cost, and low toxicity of iron make Fe-based oxygen carriers of great interest for chemical looping combustion (CLC), an emerging technology for clean and efficient combustion of fossil and renewable fuels. However, Fe also shows much lower reactivity than other metals (such as Ni and Cu). Here, we demonstrate strong improvement of Fe-based carriers by alloying the metal phase with Ni. Through a combination of carrier synthesis and characterization with thermogravimetric and fixed-bed reactor studies, we demonstrate that the addition of Ni results in a significant enhancement in activity as well as an increase in selectivity for total oxidation. Furthermore, comparing alumina and ceria as support materials highlights the fact that reducible supports can result in a strong increase in oxygen carrier utilization.

Bhavsar, Saurabh; Veser, Goetz

2013-11-06T23:59:59.000Z

336

?-Fe2O3 versus ?-Fe2O3: Controlling the Phase of the Transformation Product of ?-Fe2O3 in the Fe2O3/SiO2 System  

Science Journals Connector (OSTI)

The phase composition of the iron oxide nanoparticles in the samples annealed at 1100 °C gradually shifts from nearly pure epsilon phase with a trace of maghemite for samples 0-1100 and 0C-1100 to a mixture of maghemite, ?-Fe2O3 and ?-Fe2O3 (Figure 4a,c). ... We cannot also exclude a possibility that the increasing content of maghemite is caused by a stabilization of the spinel structure by ferrous cations, which may be generated by a reaction of iron oxide with an incompletely oxidized sucrose at higher temperature. ... Because of its polymorphism, iron(III) oxide (ferric oxide, Fe2O3) is one of the most interesting and potentially useful phases of the iron oxides. ...

Petr Brázda; Jaroslav Kohout; Petr Bezdi?ka; TomᚠKmje?

2014-02-11T23:59:59.000Z

337

Magnetic spiral structures in La/Fe multilayers.  

SciTech Connect

The magnetic properties of La/Fe multilayers were tested by magneto-optical Kerr effect and polarized neutron reflectometry. The experiments indicated that above a layer thickness t{sub la} = 25{angstrom} the magnetic state of the virgin sample is represented by a spiral-like arrangement of magnetizations of subsequent Fe layers, whereas each Fe layer itself is ferromagnetic. Polarized neutron reflectometry shows that the helix has predominantly one chirality over the entire surface area of several cm{sup 2}. Tine magnetic spiral structure is imprinted during the growth process by rotating the sample in a small residual magnetic field. External magnetic field of 90 Oe are sufficient to erase the magnetic structure irreversibly.

Lohstroh, W.

1998-09-25T23:59:59.000Z

338

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

339

Lightest Isotope of Bh Produced Via the 209Bi(52Cr,n)260Bh Reaction  

E-Print Network (OSTI)

models. For many years, “cold fusion” reactions utilizingproduced via the new “cold fusion” reaction 209 Bi( 52 Cr,

2007-01-01T23:59:59.000Z

340

Catalytic Removal of N-Allyloxycarbonyl Groups Using the [CpRu(IV)(?-C3H5)(2-quinolinecarboxylato)]PF6 Complex. A New Efficient Deprotecting Method in Peptide Synthesis  

Science Journals Connector (OSTI)

A variety of amines including even sterically less demanding and highly nucleophilic secondary amines have been efficiently deprotected without decarboxylative N-allylation from the corresponding N-allyloxycarbonyl (N-AOC) compounds by using a catalytic amount of [CpRu(IV)(?-C3H5)(2-quinolinecarboxylato)]PF6 in the presence of 1 molar amount of trifluoromethanesulfonic acid, the general utility of which has been demonstrated by the efficient synthesis of a collagen protein unit tripeptide, Pro-Pro-Gly. ... 50 ... 15 ...

Shinji Tanaka; Hajime Saburi; Takanori Murase; Masahiro Yoshimura; Masato Kitamura

2006-05-13T23:59:59.000Z

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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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341

FE's Advanced Combustion R&D Seeks Innovative Ways to Lower Cost...  

Energy Savers (EERE)

FE's Advanced Combustion R&D Seeks Innovative Ways to Lower Cost of Capturing Carbon Emissions from Coal Fired Power Plants FE's Advanced Combustion R&D Seeks Innovative Ways to...

342

Effects of Laser Energy and Wavelength on the Analysis of LiFePO4...  

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

Laser Energy and Wavelength on the Analysis of LiFePO4 Using Laser Assisted Atom Probe Tomography. Effects of Laser Energy and Wavelength on the Analysis of LiFePO4 Using Laser...

343

CE FLNG, LLC - FE DKT. NO. 12-123-LNG - ORDER 3193 | Department...  

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

CE FLNG, LLC - FE DKT. NO. 12-123-LNG - ORDER 3193 CE FLNG, LLC - FE DKT. NO. 12-123-LNG - ORDER 3193 No reports submitted for this docket. More Documents & Publications...

344

SEMI-ANNUAL REPORTS FOR GOLDEN PASS PRODUCTS LLC - FE DKT. NO...  

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

GOLDEN PASS PRODUCTS LLC - FE DKT. NO. 12-88-LNG - ORDER 3147 SEMI-ANNUAL REPORTS FOR GOLDEN PASS PRODUCTS LLC - FE DKT. NO. 12-88-LNG - ORDER 3147 April 2013 October 2013 April...

345

Strom Inc, FE Dkt. No. 14-58-LNG | Department of Energy  

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

Strom Inc, FE Dkt. No. 14-58-LNG Strom Inc, FE Dkt. No. 14-58-LNG The Office of Fossil Energy gives notice of receipt of an Application filed April 18, 2014, by Strom, Inc....

346

SEMI-ANNUAL REPORTS FOR FREEPORT McMoran - FE DKT. NO. 13-26...  

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

McMoran - FE DKT. NO. 13-26-LNG - ORDER 3290 SEMI-ANNUAL REPORTS FOR FREEPORT McMoran - FE DKT. NO. 13-26-LNG - ORDER 3290 April 2014 More Documents & Publications SEMI-ANNUAL...

347

GULF LNG LIQUEFACTION COMPANY, LLC - FE DKT. NO. 12-47-LNG -...  

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

GULF LNG LIQUEFACTION COMPANY, LLC - FE DKT. NO. 12-47-LNG - ORDER 3104 GULF LNG LIQUEFACTION COMPANY, LLC - FE DKT. NO. 12-47-LNG - ORDER 3104 October 2012 April 2013 October 2013...

348

SEMI-ANNUAL REPORTS FOR GASFIN DEVELOPMENT USA, LLC - FE DKT...  

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

GASFIN DEVELOPMENT USA, LLC - FE DKT. NO. 13-06-LNG - ORDER 3253 SEMI-ANNUAL REPORTS FOR GASFIN DEVELOPMENT USA, LLC - FE DKT. NO. 13-06-LNG - ORDER 3253 April 2013 October 2013...

349

SEMI-ANNUAL REPORTS FOR SOUTHERN LNG COMPANY - FE DKT. NO. 12...  

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

SOUTHERN LNG COMPANY - FE DKT. NO. 12-54-LNG - ORDER 3106 SEMI-ANNUAL REPORTS FOR SOUTHERN LNG COMPANY - FE DKT. NO. 12-54-LNG - ORDER 3106 October 2012 April 2013 October 2013...

350

SEMI-ANNUAL REPORTS FOR Louisiana LNG Energy LLC - FE DKT. NO...  

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

Louisiana LNG Energy LLC - FE DKT. NO 14-19-LNG - ORDER 3482 SEMI-ANNUAL REPORTS FOR Louisiana LNG Energy LLC - FE DKT. NO 14-19-LNG - ORDER 3482 October 2014 More Documents &...

351

SEMI-ANNUAL REPORTS FOR LAKE CHARLES EXPORTS, LLC - FE DKT. NO...  

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

LAKE CHARLES EXPORTS, LLC - FE DKT. NO. 11-59-LNG - ORDER 3324 SEMI-ANNUAL REPORTS FOR LAKE CHARLES EXPORTS, LLC - FE DKT. NO. 11-59-LNG - ORDER 3324 October 2013 April 2014...

352

SEMI-ANNUAL REPORTS FOR MAIN PASS ENERGY HUB, LLC - FE DKT. NO...  

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

MAIN PASS ENERGY HUB, LLC - FE DKT. NO. 12-114-LNG - ORDER 3220 SEMI-ANNUAL REPORTS FOR MAIN PASS ENERGY HUB, LLC - FE DKT. NO. 12-114-LNG - ORDER 3220 April 2014 October 2013...

353

SEMI-ANNUAL REPORTS FOR MAGNOLIA LNG, LLC - FE DKT. NO. 12-183...  

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

MAGNOLIA LNG, LLC - FE DKT. NO. 12-183-LNG - ORDER 3245 SEMI-ANNUAL REPORTS FOR MAGNOLIA LNG, LLC - FE DKT. NO. 12-183-LNG - ORDER 3245 Feb. 26, 2013 thru Feb. 28, 2014 October...

354

SEMI-ANNUAL REPORTS FOR GULF COAST LNG EXPORT, LLC - FE DKT....  

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

GULF COAST LNG EXPORT, LLC - FE DKT. NO. 12-05-LNG - ORDER 3163 SEMI-ANNUAL REPORTS FOR GULF COAST LNG EXPORT, LLC - FE DKT. NO. 12-05-LNG - ORDER 3163 No report submitted at this...

355

Carib Energy (USA) LLC - FE DKT. NO. 11-71-LNG - 2993 | Department...  

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

Carib Energy (USA) LLC - FE DKT. NO. 11-71-LNG - 2993 Carib Energy (USA) LLC - FE DKT. NO. 11-71-LNG - 2993 No reports available at this time. More Documents & Publications...

356

The Utility of FeVO4 in Combination with Stabilized Titanias...  

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

The Utility of FeVO4 in Combination with Stabilized Titanias for Mobile SCR Application The Utility of FeVO4 in Combination with Stabilized Titanias for Mobile SCR Application...

357

Accelerated Thermal Aging of Fe-Zeolite SCR Catalysts Using an...  

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

Thermal Aging of Fe-Zeolite SCR Catalysts Using an Engine-Based Systems Approach Accelerated Thermal Aging of Fe-Zeolite SCR Catalysts Using an Engine-Based Systems Approach This...

358

Cytotoxic effect of nanocrystalline MgFe2O4 particles for cancer cure  

Science Journals Connector (OSTI)

Nanocrystalline magnesium ferrites (MgFe2O4) were produced with an average grain size of about 20 nm. Their structural, morphological, and magnetic characterizations were studied. The cytotoxic effects of MgFe2O4 ...

S. Kanagesan, M. Hashim, S. Tamilselvan, N. B. Alitheen, I. Ismail, G. Bahmanrokh

2013-01-01T23:59:59.000Z

359

SEMI-ANNUAL REPORTS FOR JORDAN COVE ENERGY PROJECT, L.P. - FE...  

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

JORDAN COVE ENERGY PROJECT, L.P. - FE DKT. NO. 11-127-LNG - ORDER 3041 SEMI-ANNUAL REPORTS FOR JORDAN COVE ENERGY PROJECT, L.P. - FE DKT. NO. 11-127-LNG - ORDER 3041 April 2012...

360

SEMI-ANNUAL REPORTS FOR JORDAN COVE ENERGY FE DKT. NO. 12-32...  

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

SEMI-ANNUAL REPORTS FOR JORDAN COVE ENERGY FE DKT. NO. 12-32-LNG - ORDER 3413 SEMI-ANNUAL REPORTS FOR JORDAN COVE ENERGY FE DKT. NO. 12-32-LNG - ORDER 3413 April 2014 October 2014...

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

SEMI-ANNUAL REPORTS FOR JORDAN COVE LNG L.P. - FE DKT. NO. 13...  

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

JORDAN COVE LNG L.P. - FE DKT. NO. 13-141-LNG - ORDER 3412 SEMI-ANNUAL REPORTS FOR JORDAN COVE LNG L.P. - FE DKT. NO. 13-141-LNG - ORDER 3412 October 2014 More Documents &...

362

E-Print Network 3.0 - al mg fe Sample Search Results  

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

(2004); MC simulations Al: Fe3+: Mg 2:1:3 o (also Fe3+ clustering) Phase transition temperatures... Al Al Al Al Al Al Al Al ... Source: Collins, Gary S. - Department of...

363

Influence of Fe Contamination on the Minority Carrier Lifetime of Multi-crystalline Silicon  

Science Journals Connector (OSTI)

We investigate the influence of Fe contamination on the minority carrier lifetimes of multi-crystalline silicon. The minority carrier lifetime is measured by the microwave photoconductive decay method. The original bulk lifetime is about 30 ?s after passivation with iodine solution. After intentional Fe contamination, the bulk lifetime declines with increasing temperature. Fast cooling in air conduces to the formation of more interstitial Fe ([Fe]i). Slow cooling through the control of the furnace temperature limits the formation of more [Fe]i, but leads to the formation of precipitation. The data support the idea that the minority carrier lifetime in multi-crystalline silicon mainly depends on the distribution of Fe but not the total amount. A favorite effect of [Fe]i gettering is discovered after conventional phosphorus diffusion, and the [Fe]i concentration remaining in the silicon wafer is acceptable for solar cell applications.

Meng Xia-Jie; Ma Zhong-Quan; Li Feng; Shen Cheng; Yin Yan-Ting; Zhao Lei; Li Yong-Hua; Xu Fei

2010-01-01T23:59:59.000Z

364

Abiotic U(VI) Reduction by Sorbed Fe(II) on Natural Sediments...  

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

U(VI) Reduction by Sorbed Fe(II) on Natural Sediments. Abiotic U(VI) Reduction by Sorbed Fe(II) on Natural Sediments. Abstract: Laboratory experiments were performed as a function...

365

Interaction and charge transfer in the iron nitride Fe4N  

Science Journals Connector (OSTI)

The linearized augmented-plane-wave method has been used to calculate the electronic bands of the cubic iron nitride Fe4N. Strong interaction between N 2p and Fe 4s orbitals of nearest Fe atoms (FeII has been revealed. This interaction leads to an increase in the N 2p population. The Fe 3d bands remain almost the same as in the pure Fe metal with negligible interaction with neighboring N orbitals. However, the occupation of the FeII 3d bands and the total number of electrons of FeII atoms increases due to less screening. This unified picture clarifies the controversy in the previous explanations of the experimental results obtained from magnetic measurements, electron diffraction, and photoelectron spectroscopy.

Wei Zhou, Li-jia Qu, Qi-ming Zhang, and Ding-sheng Wang

1989-09-15T23:59:59.000Z

366

E-Print Network 3.0 - al-cu-fe quasicrystalline plasma Sample...  

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

thin films in the Al rich region of the Al-Cu-Fe-Cr quasicrystalline phase field... in UHV of magnetron sputtered Al-Cu-Fe-Cr quasicrystalline thin films. We also confirm the...

367

The stability and porosity of FE-PILCs in an acid and basic environment  

Science Journals Connector (OSTI)

Fe-PILCs were treated in a mild acid and basic environment (low concentrated acids and bases at ambient temperatures) for two days to evaluate their influence on the structure and porosity. All modified Fe-PIL...

I. Heylen; E. F. Vansant

1996-01-01T23:59:59.000Z

368

Non-equilibrium synthesis of Fe-Cr-C-W alloy by laser cladding  

Science Journals Connector (OSTI)

Synthesis of Fe-Cr-C-W alloy using the laser cladding technique offered an opportunity to produce a ... and uniform microstructure. Use of preheating during laser cladding Fe-Cr-C-W provided crack-free ... carbid...

J. Choi; J. Mazumder

1994-09-01T23:59:59.000Z

369

E-Print Network 3.0 - active fe-n epsilon Sample Search Results  

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

in PEM fuel cell conditions: Heat-treated macrocycles and beyond Summary: : A ToF SIMS abundance : o FeN2C and FeN4C B RDE catalytic activity C Number... of transferred...

370

Co-synthesis of LiFePO4 and Carbon Nanotubes  

E-Print Network (OSTI)

of LiFePO 4 and carbon nanotubes potentially bypassessynthesis of LiFePO 4 and Carbon Nanotubes James Wilcox* ,†that multi-walled carbon nanotubes (MWCNTs, Figure 1) and

Wilcox, James; Doeff, Marca M.

2006-01-01T23:59:59.000Z

371

Magnetism of NiMn2O4-Fe3O4 spinel interfaces  

E-Print Network (OSTI)

Magnetism of NiMn 2 O 4 –Fe 3 O 4 spinel interfaces B. B.2. Element-specific magnetism of Fe 3 O 4 /NMO interface inin these structures, 6 the magnetism near the isostructural

Nelson-Cheeseman, B. B.

2007-01-01T23:59:59.000Z

372

Atomic and Electronic Structure of the FeO (111)/MgO(111) Model...  

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

Electronic Structure of the FeO (111)MgO(111) Model Polar Oxide Interface. Atomic and Electronic Structure of the FeO (111)MgO(111) Model Polar Oxide Interface. Abstract: High...

373

Characterization of a Genuine S=1/2 Fe(V) Complex  

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

this reason, Fe K-edge X-ray Absorption (XAS) spectroscopy was used, in conjunction with electronic structure calculations, to obtain further insight into the Fe(V) complex. The...

374

Heterogeneous Reduction of U6+ by Structural Fe2+ From Theory...  

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

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...

375

Optical absorption and band gap reduction in (Fe1-xCrx)2O3 solid...  

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

Optical absorption and band gap reduction in (Fe1-xCrx)2O3 solid solutions: A first-principles study. Optical absorption and band gap reduction in (Fe1-xCrx)2O3 solid solutions: A...

376

Excited Carrier Dynamics of ?-Cr2O3/?-Fe2O3 Core...  

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

Excited Carrier Dynamics of ?-Cr2O3?-Fe2O3 Core-Shell Nanostructures. Abstract: In this work ?-Cr2O3?-Fe2O3 core-shell polycrystalline...

377

Psychology Taster Days in Schools and FE Colleges (ID:317)  

E-Print Network (OSTI)

Psychology Taster Days in Schools and FE Colleges (ID:317) Outline The University's Psychology department brings its students and staff to local schools and colleges to discuss studying psychology Psychology at Higher Education level. A pre-planned programme of events will focus on Psychology as a Science

Harman, Neal.A.

378

Catalyst characterisation of Fe-doped-titanium dioxide  

Science Journals Connector (OSTI)

Fe (5 wt. %) doped TiO2 was synthesised using a hydrothermal method. This material was characterised by X-Ray diffraction (XRD), Raman spectroscopy, scanning electron microscope (SEM) imaging, BET surface area, X-Ray photoelectron spectroscopy (XPS) and ultraviolet-visible diffuse reflectance spectroscopy (UV-vis DRS). The BET surface area was 136 m²/g and crystal sizes of 1.6 microns. SEM results showed crystal structures that were regular and pyramidal in shape. This catalyst only showed anatase phase. This favoured phase could be due to iron ions inserted into the TiO2 lattice and forming Ti-O-Fe bonds. It was found that doping TiO2 with 5 wt. % Fe caused a red shift in the absorption of the material to the visible light range and there was an increased absorption in the ultraviolet-visible diffuse reflectance spectroscopy, in the 450-590 nm range. These characteristics are very favourable for the use of 'free' visible light in order to activate the Fe (5 wt. %) doped TiO2 photocatalyst. [Received: September 4, 2009; Accepted: November 30, 2009

Maria D. Salazar-Villalpando; Anthony Cugini; Adam C. Miller

2010-01-01T23:59:59.000Z

379

ISSN1834-3937 Sydney FeStival  

E-Print Network (OSTI)

668 812 John Malkovich in The Giacomo Variations Concert Hall, Sydney Opera House, January 20ISSN1834-3937 summer Sydney FeStival highlightS shanghai expo kids' Lit new guinea hot air Long swims design Where art & Science meet: vivian chan ShaW & anne SchoField SYDNEY ALUMNI MAgAzINE NOVEMb

Viglas, Anastasios

380

Decomposition of nitrous oxide on AlFe-PILC catalyst  

Science Journals Connector (OSTI)

Two AlFe-PILC catalysts were prepared with different OH/metal...2O) decomposition reactions. The 100% conversion of N2O with NH3into N2and H2O was achieved below 500oC with both applied catalysts. However, the ac...

Ern? E. Kiss; Tatjana J Vuli?…

2005-11-01T23:59:59.000Z

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


381

The Effects of Fe3+ Aluminum Silicate Phase Relations in  

E-Print Network (OSTI)

The Effects of Fe3+ and Mn3+ on Aluminum Silicate Phase Relations in North-Central New Mexico, U, New Mexico 87131 (Received 28 November 1983; in revised form 2 October 1984) ABSTRACT Aluminum, then their equilibrium coexistence is invariant. However, the aluminum silicate minerals are not pure in highly oxidized

Lee, Cin-Ty Aeolus

382

Spin glass behavior in FeAl2  

E-Print Network (OSTI)

Magnetic and transport measurements indicate FeAl2 to be an ordered intermetallic spin glass, with canonical behavior including a susceptibility cusp at T-f = 35 K and frequency-dependent susceptibility below T-f. The field-cooled and zero...

Lue, CS; Oner, Y.; Naugle, Donald G.; Ross, JH.

2001-01-01T23:59:59.000Z

383

Thermal Equation of State of Fe3S and Implications for Sulfur in Earth's Core  

E-Print Network (OSTI)

solar abundance and the ease with which it forms compounds with Fe. Other possibilities include O, C, Si

Campbell, Andrew

384

Thermal equation of state of Fe3S and implications for sulfur in Earth's core  

E-Print Network (OSTI)

in Earth's core, because of its solar abundance and the ease with which it forms compounds with Fe. Other

Shen, Guoyin

385

A Cubic Fe4Mo4 Oxo Framework and Its Reversible Four-Electron Redox Chemistry  

Science Journals Connector (OSTI)

‡ Max Planck Institute for Chemical Energy Conversion (formerly Bioinorganic Chemistry), Stiftstraße 34?36, 45470 Mülheim, Germany ... Indeed, a salt with a FeII2FeIII2MoVI4 constellation, [Fe4Mo4](TCNQ)2 (2), could be isolated after treatment with TCNQ. ... data indicate that the binding energies of all the elements in the title compds. ...

Jan P. Falkenhagen; Beatrice Braun; Eckhard Bill; Dominik Sattler; Christian Limberg

2014-07-01T23:59:59.000Z

386

Research paper The determination of labile Fe in ferrihydrite by ascorbic acid extraction  

E-Print Network (OSTI)

ferrihydrite and from other Fe- bearing minerals. The method was highly selective for Fe in ferrihydrite that the older materials formed networked aggregates that slow down the dissolution. The apparent rate constant and dried HFO that contained only 20­ 30% labile Fe that was soluble in seawater (see later discussion

Benning, Liane G.

387

Highpressure behavior of iron carbide (Fe7C3) at inner core conditions  

E-Print Network (OSTI)

Highpressure behavior of iron carbide (Fe7C3) at inner core conditions Mainak Mookherjee,1 Yoichi at high pressures have demonstrated that Fe7C3 iron carbide is a likely candidate for the Earth's inner behavior of iron carbide (Fe7C3) at inner core conditions, J. Geophys. Res., 116, B04201, doi:10

Steinle-Neumann, Gerd

388

Synthesis, characterization and catalytic activity of Al/Fe2O3 nanothermite  

Science Journals Connector (OSTI)

Nanothermites have attracted much attention owing to their excellent sensitivity and catalytic activity. In this paper, Fe2O3 is used to achieve Al/Fe2O3 nanothermite by mixing nano-Al with Fe2O3 nanopowder. X-ra...

Supriya Singh; Gurdip Singh; Naveen Kulkarni…

2014-09-01T23:59:59.000Z

389

Precision Lattice-Parameter Determination of (Mg,Fe)SiO3 Tetragonal Garnets  

Science Journals Connector (OSTI)

...except for oxygen) powder mixtures of MgO (periclase), Fe2O3 (hematite), and SiO2 (vitreous silica) were pelletized...temperature on a powder diffractom-eter with an Fe rotating anode, with Mn-filtered Fe Kot (Koxl: wavelength = 1.93597...

Rie Matsubara; Hideo Toraya; Satoshi Tanaka; Hiroshi Sawamoto

1990-02-09T23:59:59.000Z

390

Hydrothermal synthesis, off-axis electron holography and magnetic properties of Fe3O4 nanoparticles  

E-Print Network (OSTI)

-sized Fe3O4 have been prepared by various methods such as sol­ gel processing, hydrothermal synthesisHydrothermal synthesis, off-axis electron holography and magnetic properties of Fe3O4 nanoparticles Jülich, Germany. Abstract. The hydrothermal synthesis of Fe3O4 nanoparticles (NPs) (

Dunin-Borkowski, Rafal E.

391

Dynamics of photogenerated holes in surface modified ?-Fe2O3 photoanodes for solar water splitting  

Science Journals Connector (OSTI)

...photogenerated holes in surface modified {alpha}-Fe2O3 photoanodes for solar water splitting 10...primarily to enhanced electron depletion in the Fe2O3 for a given applied bias. Efficient hydrogen generation...photogenerated holes in surface modified ?-Fe2O3 photoanodes for solar water splitting...

Monica Barroso; Camilo A. Mesa; Stephanie R. Pendlebury; Alexander J. Cowan; Takashi Hisatomi; Kevin Sivula; Michael Grätzel; David R. Klug; James R. Durrant

2012-01-01T23:59:59.000Z

392

Mineral assemblages in sulfide ores; the system Cu-Fe-As-S  

Science Journals Connector (OSTI)

...6a-c) requiresthejoindomeykite-Fe. Infex red joins dom-lo Cu-lo (high temperature) dom-Fe (low temperature) C2U^tSaS^a S StE VtCu-FE-As-S There are noknownmineralscontainingall four elementsasessentialcom- ponents. The only phasesthat...

Hugh McKinstry

393

The substitution reaction of (CNC)Fe?2N2 with CO  

Science Journals Connector (OSTI)

In the first SN2 substitution step, C1-O1 molecule replaces the axial N3-N4 of (CNC)Fe(N2)_N2, by attacking Fe center from the opposite direction of N3-N4. In the transition state of SN2TS1, the Fe-N3 bond has be...

Hongyan Liu; Shuangshuang Liu; Xiang Zhang

2013-06-01T23:59:59.000Z

394

Oxygen Plasma Activation of Cr(CO)(6) on ?-Fe2O3(0001)...  

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

Oxygen Plasma Activation of Cr(CO)(6) on ?-Fe2O3(0001). Oxygen Plasma Activation of Cr(CO)(6) on ?-Fe2O3(0001). Abstract: The chemistry of Cr(CO)6 on the Fe3O4(111)...

395

Magnetization of uncovered and V-covered ultrathin Fe(100) films on V(100)  

SciTech Connect

We used polarized neutron reflectometry (PNR) to determine the absolute magnetic moment of uncovered and V-covered Fe films in the thickness range from 0.3 to 5.5 nm. The films were prepared by molecular beam epitaxy on a V(100) buffer layer grown on a MgO(100) crystal. The magnetic moment shows a linear dependence on the Fe film thickness with a reduction (compared to the Fe bulk value) of the magnetic moment equivalent to 0.1 nm bulk Fe for the V-covered films and a reduction equivalent to 0.03 nm bulk Fe for the uncovered Fe films. For the case of the V/Fe/V samples we observe a much smaller reduction of the magnetic moment than reported for experiments on Fe/V multilayers. As theoretical calculations show a strong decrease of the magnetic moment for an interface alloy we conclude that the larger reduction of the magnetization in Fe/V multilayers is due to an increase in interface roughness with increasing film thickness. For the uncovered Fe(100) films we find a much smaller reduction of the magnetic moment than in earlier in situ PNR experiments on V(110)/Fe(110) where we observed a reduction equivalent to 0.4 nm bulk Fe.

Fritzsche, H.; Liu, Y.T.; Hauschild, J.; Maletta, H. [National Research Council Canada, SIMS, NPMR, Chalk River Labs, Bldg. 459, Chalk River, ON, K0J 1J0 (Canada); Hahn-Meitner-Institut, Glienicker Strasse 100, 14109 Berlin (Germany)

2004-12-01T23:59:59.000Z

396

Reductive atmosphere of supercritical water with RuO2 resulting in TcO2 colloid: Spectroscopic, morphological and crystallographic study on solutions and precipitates in Hastelloy C-22  

Science Journals Connector (OSTI)

In order to study the complicated behavior of technetium observed under various conditions of supercritical water (SCW), i.e. quantitative transfer to solid phase, strong adsorption onto the metal surface, or efficient dissolution from the metal surface, solutions and precipitates prepared in reactors made of Hastelloy C-22 in contact with the SCW containing technetium solutions were studied by absorption spectroscopy, TEM, EDX and electron diffraction. Under SCW with or without H2O2, NiCr2O4 and NiMoO4 was produced as the scales (corrosion products) of Hastelloy C-22. Under SCW with RuO2 the formation of colloidal structure comprised of ruthenium metal and TcO2, which may be named as “Tc-Ru-Colloid”, were observed. It is worthy of note that the formation of TcO42? from pertechnatate TcO4? (+0.596 V) and the disproportionation of TcO42? is plausible at present in spite of the moderate reductive atmosphere (?0.533 to +0.114 V) estimated from the observation (the existence of TcO2 and the absence of NiMoO4) by TEM and electron diffraction.

T. Yamamura; K. Yubuta; I. Satoh; Y. Yoshida; Y. Shiokawa; T. Sekine; W. Sugiyama; K.-C. Park; H. Tomiyasu

2007-01-01T23:59:59.000Z

397

Complex magnetic behavior of the sawtooth Fe chains in Rb2Fe2O(AsO4)2  

SciTech Connect

Results of magnetic eld and temperature dependent neutron diraction and magnetization mea- surements on oxy-arsenate Rb2Fe2O(AsO4)2 are reported. The crystal structure of this compound contains pseudo-one-dimensional [Fe2O6] sawtooth-like chains, formed by corner sharing isosce- les triangles of Fe3+ ions occupying two nonequivalent crystallographic sites. The chains extend innitely along the crystallographic b-axis and are structurally conned from one another via dia- magnetic (AsO4)3- units along the a-axis, and Rb+ cations along the c-axis direction. Neutron diraction measurements indicate the onset of a long range antiferromagnetic order below approxi- mately 25 K. The magnetic structure consists of ferrimagnetic chains which are antiferromagnetically coupled with each other. Within each chain, one of the two Fe sites carries a moment which lies along the b-axis, while the second site bears a canted moment in the opposite direction. Exter- nally applied magnetic eld induces a transition to a ferrimagnetic state, in which the coupling between the sawtooth chains becomes ferromagnetic. Magnetization measurements performed on optically-aligned single crystals reveal evidence for an uncompensated magnetization at low mag- netic elds that could emerge from to a phase-segregated state with ferrimagnetic inclusions or from antiferromagnetic domain walls. The observed magnetic states and the competition between them is expected to arise from strongly frustrated interactions within the sawtooth chains and relatively weak coupling between them.

Garlea, Vasile O [ORNL] [ORNL; Sanjeewa, Liurukara D. [Clemson University] [Clemson University; McGuire, Michael A [ORNL] [ORNL; Kumar, Pramod [Indian Institute of Information Technology] [Indian Institute of Information Technology; Sulejmanovic, Dino [Clemson University] [Clemson University; Hwu, Shiou-Jyh [Clemson University] [Clemson University

2014-01-01T23:59:59.000Z

398

Pyrosmalite-(Fe), Fe8Si6O15(OH,Cl)10 Hexiong Yang,a  

E-Print Network (OSTI)

with pyrosmalite-(Mn) and its structure is character- ized by a stacking of brucite-type layers of FeO6-octahedra-groups that are part of the brucite- type layers and the terminal silicate O atoms is present. Related literature

Downs, Robert T.

399

A synthesis of LiFePO 4 starting from FePO 4 under reducing atmosphere  

Science Journals Connector (OSTI)

A fast and easy way to produce LiFePO 4 starting from FePO 4 used as iron and phosphorus source is proposed. 5% hydrogen is employed as a reducing agent and various compounds containing lithium as lithiation agents. The selected lithiation agents included: LiCl CH 3 COOLi LiOH Li 2 S LiH and Li 2 CO 3 . Solid state synthesis is used for the LiFePO 4 preparation and the so obtained materials are structurally characterized by XRD. The materials are used to fabricate composite electrode and their specific capacity is evaluated by low rate galvanostatic charge/discharge cycles (C/10 rate). Among the various lithium salts the acetate give rise to the LiFePO 4 with the best electrochemical performance. The morphology of this material is further investigated by SEM microscopy and the specific capacity is evaluated as a function of the discharge rate and the cycle number.

2014-01-01T23:59:59.000Z

400

The importance of holes in aluminium tris-8-hydroxyquinoline (Alq{sub 3}) devices with Fe and NiFe contacts  

SciTech Connect

To study the dominant charge carrier polarity in aluminium tris-8-hydroxyquinoline (Alq{sub 3}) based spin valves, single Alq{sub 3} layer devices with NiFe, ITO, Fe, and aluminium electrodes were fabricated and characterised by Time of Flight (ToF) and Dark Injection (DI) techniques, yielding a lower hole mobility compared to electron mobility. We compare the mobility measured by DI for the dominant carrier injected from NiFe and Fe electrodes into Alq{sub 3}, to that of holes measured by ToF. This comparison leads us to conclude that the dominant charge carriers in Alq{sub 3} based spin valves with NiFe or Fe electrodes are holes.

Zhang, Hongtao; Desai, P.; Kreouzis, T. [Materials Research Institute, School of Physics and Astronomy, Queen Mary University of London, Mile End Road, London E1 4NS (United Kingdom)] [Materials Research Institute, School of Physics and Astronomy, Queen Mary University of London, Mile End Road, London E1 4NS (United Kingdom); Zhan, Y. Q. [Materials Research Institute, School of Physics and Astronomy, Queen Mary University of London, Mile End Road, London E1 4NS (United Kingdom) [Materials Research Institute, School of Physics and Astronomy, Queen Mary University of London, Mile End Road, London E1 4NS (United Kingdom); State Key Laboratory of ASIC and System, Department of Microelectronics, SIST, Fudan University, Shanghai 200433 (China); Drew, A. J. [Materials Research Institute, School of Physics and Astronomy, Queen Mary University of London, Mile End Road, London E1 4NS (United Kingdom) [Materials Research Institute, School of Physics and Astronomy, Queen Mary University of London, Mile End Road, London E1 4NS (United Kingdom); College of Physical Science and Technology, Sichuan University, Chengdu 610064 (China); Gillin, W. P. [Materials Research Institute, School of Physics and Astronomy, Queen Mary University of London, Mile End Road, London E1 4NS (United Kingdom) [Materials Research Institute, School of Physics and Astronomy, Queen Mary University of London, Mile End Road, London E1 4NS (United Kingdom); State Key Laboratory of ASIC and System, Department of Microelectronics, SIST, Fudan University, Shanghai 200433 (China); College of Physical Science and Technology, Sichuan University, Chengdu 610064 (China)

2014-01-06T23:59:59.000Z

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

Synthesis of Fe-zeolites and Fe-PILC samples and their activity in wet hydrogen peroxide oxidation of p-coumaric acid  

Science Journals Connector (OSTI)

The catalytic wet hydrogen peroxide oxidation of p-coumaric acid was investigated over various Fe-ZSM-5, Fe-BEA and Fe-PILC samples. The catalysts differing in the amount of iron were prepared by the solid state ion exchange method and were caracterized by XRD, BET surface area and Chemical analysis. The oxidation reaction was carried out in a batch reactor at 70°C and atmospheric pressure. A great interest has been focused on the leaching-off of iron. Fe-BEA catalysts were found more effective than Fe-ZSM-5 and Fe-PILC samples. At optimal condition, a solution containing 500 ppm of p-coumaric acid, 10?2M of H2O2 and 0.5 g/l of catalyst was degraded in less than 2h with a significant total organic carbon (TOC) removal. Characterization data were correlated with the activity results.

W. Najjar; A. Ghorbel; S. Perathoner; G. Centi

2005-01-01T23:59:59.000Z

402

Scaffolds of magnetically active 3d metals in the valence electron controlled borides Ti{sub 9?x}M{sub 2+x}Ru{sub 18}B{sub 8} (M=Cr–Ni; x=0.5–1): Structutral, electronic and magnetic properties  

SciTech Connect

Polycrystalline samples of the boride series Ti{sub 9?x}M{sub 2+x}Ru{sub 18}B{sub 8} (M=Cr, Co, Mn, Ni) including single crystals of Ti{sub 8}Co{sub 3}Ru{sub 18}B{sub 8} have been prepared by arc-melting the elements. The phases were characterized by powder X-ray diffraction (Rietveld refinement), single-crystal X-ray diffraction (for M=Co), and energy-dispersive X-ray (EDX) analysis. They are substitutional variants of the Zn{sub 11}Rh{sub 18}B{sub 8} structure type, space group P4/mbm (No. 127) and contain a “scaffold” structural unit (M-ladders interacting with M/Ti-chains) as well as isolated M/Ti-chains. According to DFT calculations, the Ru–X (X=B, Ti, Ti/M) bonding interactions are nearly constant throughout the series and responsible for the structural stability of these phases, whereas the M–M and Ru–M interactions vary significantly with varying valence electron count. Furthermore, density of states (DOS) analyses predict the phases with M=Mn and Ni to develop a total magnetic moment but not the M=Co phase. Susceptibility measurements confirm the Co phase to be paramagnetic and the Mn Phase orders ferrimagnetically below 120 K and thus develops a magnetic moment, as predicted. - Graphical abstract: The crystal structures of the new phases (M=Cr, Mn, Co, Ni) are confirmed by Rietveld refinement of powder diffraction data and single crystal X-ray diffraction (for M=Co) to contain beside the M-ladder also M/Ti-chains. Similar to the series Ti{sub 9}M{sub 2}Ru{sub 18}B{sub 8}, the crystal structure of the new phases are mainly stabilized by the heteroatomic Ru–B and Ru–Ti bonds that remain nearly constant throughout the series, whereas the M-containing bonds vary significantly with varying valence electron count. An experimental finding confirmed and even extended by COHP bonding analyses. In addition, the DOS analyses of the M-elements reveal the development of magnetic moments for the M=Mn, Ni cases but not for M=Co. Indeed, Ti{sub 8}Co{sub 3}Ru{sub 18}B{sub 8} was found experimentally to be a paramagnet and ferrimagnetic ordering below 120 K is found for M=Mn. Highlights: • Synthesis of the valence electron controlled borides Ti{sub 9?x}M{sub 2+x}Ru{sub 18}B{sub 8} (M=Cr–Ni). • Prediction of magnetic properties of Ti{sub 9?x}M{sub 2+x}Ru{sub 18}B{sub 8}. • Ferrimagnetic ordering found in Ti{sub 8}M{sub 3}Ru{sub 18}B{sub 8}. • Chemical bonding studied by density functional theory.

Goerens, Christian [Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, D-52056 Aachen (Germany); Brgoch, Jakoah [Department of Chemistry, Iowa State University, Ames, IA 50011 (United States); Miller, Gordon J., E-mail: gmiller@iastate.edu [Department of Chemistry, Iowa State University, Ames, IA 50011 (United States); Fokwa, Boniface P.T., E-mail: boniface.fokwa@ac.rwth-aachen.de [Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, D-52056 Aachen (Germany)

2013-08-15T23:59:59.000Z

403

XAS Characterization of a Nitridoiron(IV) Complex with a Very Short Fe-N Bond  

SciTech Connect

X-ray absorption spectroscopy has been used to characterize the novel nitridoiron(IV) units in two [PhBP{sup R}{sub 3}]Fe(N) complexes (R = iPr and CyCH{sub 2}) and obtain direct spectroscopic evidence for a very short Fe-N distance. The distance of 1.51-1.55 {angstrom} reflects the presence of an Fe{triple_bond}N triple bond in accord with the observed Fe{triple_bond}N vibration observed for one of these species ({nu}{sub FeN} = 1034 cm{sup -1}). This highly covalent bonding interaction results in the appearance of an unusually intense pre-edge peak, whose estimated area of 100(20) units is much larger than those of the related tetrahedral complexes with Fe{sup I}-N{sub 2}-Fe{sup I}, Fe{sup II}-NPh{sub 2}, and Fe{sup III}NAd motifs, and those of recently described six-coordinate Fe{sup V}{triple_bond}N and Fe{sup VI}{triple_bond}N complexes. The observation that the Fe{sup IV}-N distances of two [PhBP{sup R}{sub 3}]Fe(N) complexes are shorter than the Fe{sup IV}-O bond lengths of oxoiron(IV) complexes may be rationalized on the basis of the greater {pi} basicity of the nitrido ligand than the oxo ligand and a lower metal coordination number for the Fe(N) complex.

Rohde,J.; Betley, T.; Jackson, T.; Saouma, C.; Peters, J.; Que, Jr., L.

2007-01-01T23:59:59.000Z

404

XAS Characterization of a Nitridoiron(IV) Complex With a Very Short Fe-N Bond  

SciTech Connect

X-ray absorption spectroscopy has been used to characterize the novel nitridoiron(IV) units in two [PhBP{sup R}{sub 3}]Fe(N) complexes (R = iPr and CyCH{sub 2}) and obtain direct spectroscopic evidence for a very short Fe-N distance. The distance of 1.51--1.55 {angstrom} reflects the presence of an Fe{triple_bond}N triple bond in accord with the observed Fe{triple_bond}N vibration observed for one of these species (v{sub FeN}=1034 cm{sup -1}). This highly covalent bonding interaction results in the appearance of an unusually intense pre-edge peak, whose estimated area of 100(20) units is much larger than those of the related tetrahedral complexes with Fe{sup I}-N{sub 2}-Fe{sup I}, Fe{sup II}-NPh{sub 2}, and Fe{sup III}{triple_bond}NAd motifs, and those of recently described six-coordinate Fe{sup V}{triple_bond}N and Fe{sup VI}{triple_bond}N complexes. The observation that the Fe{sup IV}-N distances of two [PhBP{sup R}{sub 3}]Fe(N) complexes are shorter than the Fe{sup IV}-O bond lengths of oxoiron(IV) complexes may be rationalized on the basis of the greater ? basicity of the nitrido ligand than the oxo ligand and a lower metal coordination number for the Fe(N) complex.

Rohde, J.-U.; Betley, T.A.; Jackson, T.A.; Saouma, C.T.; Peters, J.C.; Que, L.; Jr.

2009-06-04T23:59:59.000Z

405

A Biophysical Approach to Investigate the Human Fe-S Cluster Assembly Pathway  

E-Print Network (OSTI)

-S clusters on the ISCU2 scaffold protein. (A) Iron first mechanism and (B) sulfur first mechanism. Adapted with permission from Krebs, C., Agar, J.N., Smith, A.D., Fazzon, J., Dean, D.R., Huynh, B.H., and Johnson, M.K. (2001) IscA, an alternate scaffold... and ISCU2. 3 equivalents of ISCU2 and 3 equivalents of FXN variants (native FXN, N146K, Q148R, I154F, W155R, and R165C) were used in a radiolabeling experiment using conditions similar to Figure 2. * This experiment was performed by Dr. Jennifer Bridwell...

Fox, Nicholas G

2014-06-02T23:59:59.000Z

406

Modified magnetism within the coherence volume of superconducting FeSeTe  

SciTech Connect

Neutron Scattering is used to probe magnetic interactions as superconductivity develops in opti- mally doped Fe_(1+ )Se_xTe_(1 x). Applying the first moment sum-rule to comprehensive neutron scatter- ing data, we extract the change in magnetic exchange energy [J_(R-R ) S_R S_R ] in the superconducting state referenced to the normal state. Oscillatory changes are observed for Fe-Fe displacements | R| < , where = 1.3(1) nm is the superconducting coherence length. Dominated by a large reduction in the second nearest neighbor exchange energy (-1.2(2) meV/Fe), the overall reduction in magnetic interaction energy is Hmag = 0.31(9) meV/Fe. Comparison to the superconducting condensation energy E_sc = 0.013(1) meV/Fe, which we extract from specific heat data, suggests the modified magnetism we probe drives superconductivity in Fe_(1+ )Se_xTe_(1 x)

Leiner, Jonathan C [ORNL; Thampy, Vivek [ORNL; Christianson, Andrew D [ORNL; Abernathy, D. [Oak Ridge National Laboratory (ORNL); Stone, Matthew B [ORNL; Lumsden, Mark D [ORNL; Sales, Brian C [ORNL; Safa-Sefat, Athena [ORNL; Hu, Jin [Tulane University; Mao, Zhiqiang [Tulane University; Bao, Wei [Renmin University of China; Broholm, Collin L [ORNL

2014-01-01T23:59:59.000Z

407

Nd1+?Fe4B4: A composition-modulated compound with incommensurate composite crystal structure  

Science Journals Connector (OSTI)

Nd1+?Fe4B4 crystallizes with the tetragonal Sm1+?Fe4B4 structure type. It is characterized by two interpenetrating metal substructures with incommensurate translation periods, cNd and cFe. The structure is approximated using a superstructure model of composition Nd19(Fe4B4)17 with c?19cNd?17cFe=66.2(1) A?, and refined from single-crystal x-ray data to a consistency index of R=0.12 (2800 contributing reflections, 139 refined parameters). The results reveal rotational and displacive modulations of the Fe tetrahedra chains, Nd atom strings, and B atom pairs. Their periods can be expressed by Lrot=2Ldis=1/(1/crNd-1/cFe). High-resolution electron microscopy reveals 17-A?-spaced Moiré-type fringes, but no commensurately spaced structure segments.

A. Bezinge, H. F. Braun, and J. Muller

1987-07-15T23:59:59.000Z

408

Lattice and magnetic structures of PrFeAsO, PrFeAsO0.85F0.15, and PrFeAsO0.85  

SciTech Connect

We use powder neutron diffraction to study the spin and lattice structures of polycrystalline samples of nonsuperconducting PrFeAsO and superconducting PrFeAsO0.85F0.15 and PrFeAsO0.85. We find that PrFeAsO exhibits abrupt structural phase transitions at 153 K followed by static long-range antiferromagnetic order at 127 K. Both the structural distortion and magnetic order are similar to other rare-earth oxypnictides. Electron doping the system with either fluorine or oxygen deficiency suppresses the structural distortion and static long-range antiferromagnetic order, therefore placing these materials into the same class of FeAs-based superconductors.

Zhao, Jun [University of Tennessee, Knoxville (UTK); Huang, Q. [National Institute of Standards and Technology (NIST); de la Cruz, Clarina [University of Tennessee, Knoxville (UTK) & Oak Ridge National Laboratory (ORNL); Haraldsen, J. T. [University of Tennessee, Knoxville (UTK); Lynn, J. W. [National Institute of Standards and Technology (NIST); Lumsden, Mark D [ORNL; Ren, Z A [National Laboratory for Superconductivity, Beijing; Yang, Jie [Beijing National Laboratory for Condensed Matter Physics/Chinese Academy of Scie; Shen, Xiaolin [Beijing National Laboratory for Condensed Matter Physics, Institute of Physics; Dong, Xiaoli [Beijing National Laboratory for Condensed Matter Physics, Institute of Physics; Zhao, Zhongxian [Beijing National Laboratory for Condensed Matter Physics, Institute of Physics; Dai, Pengcheng [University of Tennessee, Knoxville (UTK)

2008-01-01T23:59:59.000Z

409

Lattice and magnetic structures of PrFeAsO, PrFeAsO{sub 0.85}F{sub 0.15}, and PrFeAsO{sub 0.85}  

SciTech Connect

We use powder neutron diffraction to study the spin and lattice structures of polycrystalline samples of nonsuperconducting PrFeAsO and superconducting PrFeAsO{sub 0.85}F{sub 0.15} and PrFeAsO{sub 0.85}. We find that PrFeAsO exhibits abrupt structural phase transitions at 153 K followed by static long-range antiferromagnetic order at 127 K. Both the structural distortion and magnetic order are similar to other rare-earth oxypnictides. Electron doping the system with either fluorine or oxygen deficiency suppresses the structural distortion and static long-range antiferromagnetic order, therefore placing these materials into the same class of FeAs-based superconductors.

Zhao Jun [Department of Physics and Astronomy, The University of Tennessee, Knoxville, Tennessee 37996-1200 (United States); Huang, Q.; Lynn, J. W. [NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899-6012 (United States); Cruz, Clarina de la; Dai Pengcheng [Department of Physics and Astronomy, The University of Tennessee, Knoxville, Tennessee 37996-1200 (United States); Neutron Scattering Science Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States); Lumsden, M. D. [Neutron Scattering Science Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States); Ren, Z. A.; Yang Jie; Shen Xiaolin; Dong Xiaoli; Zhao Zhongxian [Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080 (China)

2008-10-01T23:59:59.000Z

410

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":""}]}

411

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":""}]}

412

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

413

Effect of tungsten addition on the toughness and hardness of Fe{sub 2}B in wear-resistant Fe-B-C cast alloy  

SciTech Connect

The effects of tungsten additions of 0%, 1.12%, 2.04%, and 3.17% (in wt.%) on the morphology, fracture toughness and micro-hardness of Fe{sub 2}B in Fe-B-C cast alloy were investigated. The results indicate that, with the increase of tungsten addition, the morphology and distribution of Fe{sub 2}B have no change and a new W-containing phase, except the (Fe, W){sub 2}B with a certain tungsten solution, does not form, and that the fracture toughness of Fe{sub 2}B increases first and then decreases, while the hardness increases first and then has a little change. Compared with the fracture toughness (3.8 MPa{center_dot}m{sup 1/2}) of Fe{sub 2}B without tungsten addition, the toughness at 2.04 wt.% tungsten can be improved by about above 80% and achieves about 6.9 MPa{center_dot}m{sup 1/2}, and variation characteristics of hardness and toughness of Fe{sub 2}B were also testified by viewing the indentation marks and cracks on the Fe{sub 2}B, respectively. - Highlights: Black-Right-Pointing-Pointer Poor toughness of Fe2B decreases obviously the wear resistance of the alloy. Black-Right-Pointing-Pointer As W content increases, Fe2B's toughness increases first and then decreases. Black-Right-Pointing-Pointer As W content increases, Fe2B's hardness first increases and then has little change. Black-Right-Pointing-Pointer The toughness at 2.04 % W can be improved by above 80% more than that at 0% W.

Huang, Zhifu, E-mail: hzf@mail.xjtu.edu.cn; Xing, Jiandong; Lv, Liangliang

2013-01-15T23:59:59.000Z

414

Tensile properties of Fe-16 at. % Al alloys  

SciTech Connect

A newly developed melting method for Fe-16 at. % Al alloy (FAPY) is described. Tensile data on the air-induction-melted (AIM) and vacuum-induction-melted (VIM) heats of FAPY after identical processing are presented. Optical, scanning electron micrographs (SEM), and microprobe analysis were carried out to explain the lower room-temperature ductility and more scatter in the data for the AIM material as opposed to the VIM material.

Sikka, V.K.

1995-02-01T23:59:59.000Z

415

Facile formation of exo-nido?closo-rearrangement products upon the replacement of PPh3 ligands with bis(diphenylphosphino)alkanes in “three-bridge” ruthenacarborane 5,6,10-[RuCl(PPh3)2]-5,6,10-(µ-H)3-10-H-exo-nido-7,8-C2B9H8  

Science Journals Connector (OSTI)

The replacement of the PPh3 ligands in “three-bridge” exo-nido-ruthenacarborane 5,6,10-[RuCl(PPh3)2]-5,6,10-(µ-H)3-10-H-exo-nido-7,8-C2B9H8 with diphosphines, viz., 1,3-bis(diphenylphosphino)propane (dppp) or 1,4...

D. N. Cheredilin; E. V. Balagurova; I. A. Godovikov…

2005-11-01T23:59:59.000Z

416

AlN/Fe/AlN nanostructures for magnetooptic magnetometry  

SciTech Connect

AlN/Fe/AlN/Cu nanostructures with ultrathin Fe grown by sputtering on Si substrates are evaluated as probes for magnetooptical (MO) mapping of weak currents. They are considered for a laser wavelength of ??=?410?nm (3.02?eV) and operate at oblique light incidence angles, ?{sup (0)}, to enable detection of both in-plane and out-of-plane magnetization. Their performance is evaluated in terms of MO reflected wave electric field amplitudes. The maximal MO amplitudes in AlN/Fe/AlN/Cu are achieved by a proper choice of layer thicknesses. The nanostructures were characterized by MO polar Kerr effect at ?{sup (0)}???5° and longitudinal Kerr effect spectra (?{sup (0)}?=?45°) at photon energies between 1 and 5?eV. The nominal profiles were refined using a model-based analysis of the spectra. Closed form analytical expressions are provided, which are useful in the search for maximal MO amplitudes.

Lišková-Jakubisová, E., E-mail: liskova@karlov.mff.cuni.cz; Viš?ovský, Š. [Faculty of Mathematics and Physics, Charles University in Prague, Ke Karlovu 5, 12116 Prague 2 (Czech Republic); Široký, P.; Hrabovský, D.; Pištora, J. [Nanotechnology Center, Technical University of Ostrava, 17. listopadu 15/2172, 70833 Ostrava Poruba (Czech Republic); Harward, I.; Celinski, Z. [Center for Magnetism and Magnetic Nanostructures, University of Colorado at Colorado Springs, 1420 Austin Bluffs Pkwy., Colorado Springs, Colorado 80918 (United States)

2014-05-07T23:59:59.000Z

417

Ferromagnetism at the interfaces of antiferromagnetic FeRh epilayers  

SciTech Connect

The nanoscale magnetic structure of FeRh epilayers has been studied by polarized neutron reflectometry. Epitaxial films with a nominal thickness of 500 {angstrom} were grown on MgO (001) substrates via molecular-beam epitaxy and capped with 20 {angstrom} of MgO. The FeRh films show a clear transition from the antiferromagnetic (AF) state to the ferromagnetic (FM) state with increasing temperature. Surprisingly the films possess a FM moment even at a temperature 80 K below the AF-FM transition temperature of the film. We have quantified the magnitude and spatial extent of this FM moment, which is confined to within {approx}60-80 {angstrom} of the FeRh near the top and bottom interfaces. These interfacial FM layers account for the unusual effects previously observed in films with thickness <100 {angstrom}. Given the delicate energy balance between the AF and FM ground states we suggest a metastable FM state resides near to the interface within an AF matrix. The length scale over which the FM region resides is consistent with the strained regions of the film.

Fan, P.; Arena, D.; Kinane, C.J.; Charlton, T.R.; Dorner, R.; Ali, M.; de Vries, A. de.; Brydson, R.M.D.; Marrows, C.H.; Hickey, B.J.; Tanner, B.K.; Nisbet, G.; and Langridge, S.

2010-07-15T23:59:59.000Z

418

134 Inorg. Chem. 1995, 34, 134-139 Structural and Spectroscopic Properties of Antiferromagnetically Coupled FeUIMnUand  

E-Print Network (OSTI)

homodinuclear active sites involving first row transition metals like Fe (hemerythrin,2ribonucleotide redu

Hendrich, Mike

419

Tunneling conductance studies in the ion-beam sputtered CoFe/Mg/MgO/NiFe magnetic tunnel junctions  

SciTech Connect

Magnetic tunnel junctions consisting of CoFe(10 nm)/Mg(1 nm)/MgO(3.5 nm)/NiFe(10 nm) are grown at room temperature using dual ion beam sputtering via in-situ shadow masking. The effective barrier thickness and average barrier height are estimated to be 3.5 nm (2.9 nm) and 0.69 eV (1.09 eV) at 290 K (70 K), respectively. The tunnel magnetoresistance value of 0.2 % and 2.3 % was observed at 290 K and 60 K, respectively. The temperature dependence of tunneling conductance revealed the presence of localized states present within the forbidden gap of the MgO barrier leading to finite inelastic spin independent tunneling contributions, which degrade the TMR value.

Singh, Braj Bhusan; Chaudhary, Sujeet [Thin Film Laboratory, Department of Physics, Indian Institute of Technology Delhi, New Delhi 110016 (India)

2013-06-03T23:59:59.000Z

420

Nano and picosecond magnetization dynamics of weakly coupled CoFe/Cr/NiFe trilayers studied by a multitechnique approach  

Science Journals Connector (OSTI)

We present results on the magnetization dynamics in heterostructures of the CoFe/Cr/NiFe type. We have employed a combination of different layer-selective methods covering a broad range from quasistatic hysteresis measurements by x-ray magnetic circular dichroism (XMCD), over time-resolved photoemission electron microscopy (PEEM) at subnanosecond timescales to high-frequency ferromagnetic resonance (FMR) experiments. With increasing driving frequency, we found a different influence of the coupling between the two ferromagnetic layers on the dynamic behavior. Employing the spatial resolution of the PEEM method, we have been able to discern various dynamic responses in different regions of the sample that could be attributed to magnetodynamic processes with a different degree of coupling. In conjunction with the complementary FMR and XMCD measurements, we attribute the inhomogeneous influence of interlayer coupling to a shift from domain-wall-motion-dominated dynamics at low frequencies to precession-dominated dynamics at higher frequencies.

A. M. Kaiser; C. Schöppner; F. M. Römer; C. Hassel; C. Wiemann; S. Cramm; F. Nickel; P. Grychtol; C. Tieg; J. Lindner; C. M. Schneider

2011-10-10T23:59:59.000Z

Note: This page contains sample records for the topic "bh fe ru" 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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421

Inhibition of NO3? and NO2? Reduction by Microbial Fe(III) Reduction: Evidence of a Reaction between NO2? and Cell Surface-Bound Fe2+  

Science Journals Connector (OSTI)

...electron-dense, Fe-enriched coatings on cells...430-R-02-003, inventory of U.S. greenhouse...influences of nitrate on uranium solubility during bioremediation of uranium-contaminated subsurface...electron-dense, Fe-enriched coating on cells...

Aaron J. Coby; Flynn W. Picardal

2005-09-01T23:59:59.000Z

422

Solar Syngas Production via H2O/CO2-Splitting Thermochemical Cycles with Zn/ZnO and FeO/Fe3O4 Redox Reactions  

Science Journals Connector (OSTI)

Solar Syngas Production via H2O/CO2-Splitting Thermochemical Cycles with Zn/ZnO and FeO/Fe3O4 Redox Reactions† ... The first step, driven by concentrated solar radiation, is the endothermic thermolysis of ZnO producing a gaseous mixture of O2 and ... ...

A. Stamatiou; P. G. Loutzenhiser; A. Steinfeld

2009-08-28T23:59:59.000Z

423

Magnetoelectric nano-Fe3O4?CoFe2O4?PbZr0.53Ti0.47O3 composite  

E-Print Network (OSTI)

A new magnetoelectric hybrid device composed of a nanoparticulate magnetostrictive iron oxide-cobalt ferritefilm on a piezoelectric lead zirconic titanate crystal serving as both substrate and straining medium is described. Nano-Fe3O4?CoFe2O4...

Ren, Shenqiang; Wuttig, Manfred

2008-02-26T23:59:59.000Z

424

Kinetics of Magnetite (Fe3O4) Oxidation to Hematite (Fe2O3) in Air for Chemical Looping Combustion  

Science Journals Connector (OSTI)

Rui, X.; Qilei, S.; Min, S.; Zuoji, L.; Shuai, Z.; Laihong, S.Pressurized chemical-looping combustion of coal with an iron ore-based oxygen carrier Combust. ... Industrial & Engineering Chemistry Research (2013), 52 (42), 14808-14816 CODEN: IECRED; ISSN:0888-5885. ... Application of Fe2O3-Al2O3 Composite Particles as Solid Looping Material of the Chemical-Loop Combustor ...

Esmail R. Monazam; Ronald W. Breault; Ranjani Siriwardane

2014-08-07T23:59:59.000Z

425

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

426

Structural Investigation of the (010) Surface of the Al13Fe4 Catalyst  

Science Journals Connector (OSTI)

We have investigated the structure of the Al13Fe4(010) surface using both experimental and ab initio computational methods. The results indicate that the topmost surface layers correspond to incomplete puckered (P) planes present in the bulk crystal structure. The main building block of the corrugated termination consists of two adjacent pentagons of Al atoms, each centered by a protruding Fe atom. These motifs are interconnected via additional Al atoms referred to as “glue” atoms which partially desorb above 873 K. The surface structure of lower atomic density compared to the bulk P plane is explained by a strong Fe-Al-Fe covalent polar interaction that preserves intact clusters at the surface. The proposed surface model with identified Fe-containing atomic ensembles could explain the Al13Fe4 catalytic properties recently reported in line with the site-isolation concept [M. Armbrüster et al., Nat. Mater. 11, 690 (2012)].

J. Ledieu; É. Gaudry; L. N. Serkovic Loli; S. Alarcón Villaseca; M.-C. de Weerd; M. Hahne; P. Gille; Y. Grin; J.-M. Dubois; V. Fournée

2013-02-15T23:59:59.000Z

427

Search for supernova-produced 60Fe in a marine sediment  

E-Print Network (OSTI)

An 60Fe peak in a deep-sea FeMn crust has been interpreted as due to the signature left by the ejecta of a supernova explosion close to the solar system 2.8 +/- 0.4 Myr ago [Knie et al., Phys. Rev. Lett. 93, 171103 (2004)]. To confirm this interpretation with better time resolution and obtain a more direct flux estimate, we measured 60Fe concentrations along a dated marine sediment. We find no 60Fe peak at the expected level from 1.7 to 3.2 Myr ago. However, applying the same chemistry used for the sediment, we confirm the 60Fe signal in the FeMn crust. The cause of the discrepancy is discussed.

C. Fitoussi; G. M. Raisbeck; K. Knie; G. Korschinek; T. Faestermann; S. Goriely; D. Lunney; M. Poutivtsev; G. Rugel; C. Waelbroeck; A. Wallner

2007-09-26T23:59:59.000Z

428

Magnetism of NiMn2O4-Fe3O4 spinel interfaces  

SciTech Connect

We investigate the magnetic properties of the isostructural spinel-spinel interface of NiMn{sub 2}O{sub 4}(NMO)-Fe{sub 3}O{sub 4}. Although the magnetic transition temperature of the NMO film is preserved, both bulk and interface sensitive measurements demonstrate that the interface exhibits strong interfacial magnetic coupling up to room temperature. While NMO thin films have a ferrimagnetic transition temperature of 60 K, both NiFe{sub 2}O{sub 4} and MnFe{sub 2}O{sub 4} are ferrimagnetic at room temperature. Our experimental results suggest that these magnetic properties arise from a thin interdiffused region of (Fe,Mn,Ni){sub 3}O{sub 4} at the interface, leading to Mn and Ni magnetic properties similar to those of MnFe{sub 2}O{sub 4} and NiFe{sub 2}O{sub 4}.

Arenholz, Elke; Nelson-Cheeseman, B. B.; Chopdekar, R. V.; Bettinger, J. S.; Arenholz, E.; Suzuki, Y.

2007-09-13T23:59:59.000Z

429

Strategy I responses to Fe-deficiency of two Citrus rootstocks differing in their tolerance to iron chlorosis  

Science Journals Connector (OSTI)

The expression of iron (Fe) acquisition-related genes in roots was studied in roots of two different citrus seedlings, namely, Carrizo citrange (CC, Fe chlorosis-sensitive) and Cleopatra mandarin (CM, Fe chlorosis-tolerant), growing either with (control) or without (?Fe) Fe in the nutrient solution. Fe-deficiency increased expression of the gene HA1 coding for proton-ATPase (H+-ATPase) enzyme in both genotypes, although no differences were observed between treatments among rootstocks. Furthermore, while the gene expression levels of FRO2 – which encodes the Ferric Chelate Reductase (FC-R) enzyme–, increased under ?Fe condition in both genotypes, CM always recorded the highest activity. CC showed the greatest induction of genes IRT1 and IRT2 encoding two iron transporters, however only IRT1 was significantly induced by Fe starvation. Analysis of the enzymatic activities (H+-ATPase and FC-R) regulated by the aforementioned genes confirmed these results. Thus, in agreement with the acidification pattern registered, H+-ATPase activities were higher in ?Fe plants than in controls, although no significant differences were detected between each treatment among rootstocks. Fe starvation also induced FC-R activity; however, this was greater in CM than in CC roots. Interestingly, root 57Fe uptake rates from 57Fe-EDDHA solutions were increased by Fe-deficiency, especially in the CM genotype, and CM accumulated a much larger Fe pool in the root apoplast than CC. Taken together, the main trait determining Fe-chlorosis tolerance among these genotypes is the ability to boost Fe3+ reduction in response to Fe-deficiency through enhanced FRO2 gene expression. Moreover, Fe chlorosis resistance in these plants could be related to the amount of Fe stored in the root apoplast.

Mary-Rus Martínez-Cuenca; M. Ángeles Forner-Giner; Domingo J. Iglesias; Eduardo Primo-Millo; Francisco Legaz

2013-01-01T23:59:59.000Z

430

Corrosion behavior of newly developed TiAgFe dental alloys in neutral saline solution  

E-Print Network (OSTI)

Corrosion behavior of newly developed Ti­Ag­Fe dental alloys in neutral saline solution B. B. Zhang, B. L. Wang, L. Li and Y. F. Zheng* The corrosion behavior of Ti­5Ag­xFe alloys (x ¼ 1, 2.5, 5 wt) Ti,Ti­ 5Ag­xFe alloys exhibited higher corrosion potentials, lower current densities, and larger

Zheng, Yufeng

431

Solubility and freezing effects of Fe2+ solutions representative of upper tropospheric and lower  

E-Print Network (OSTI)

determined the total equilibrium metal solubility ([Fe2+ ]T and [Mg2+ ]T) in 20­90 wt % sulfuric acidSolubility and freezing effects of Fe2+ and Mg2+ in H2SO4 solutions representative of upper solutions over the temperature range 200­300 K. We have measured solubilities using samples of MgSO4, FeSO4Á

432

Fe3O4-LiMo3Se3 Nanoparticle Clusters as Superparamagnetic Nanocompasses  

E-Print Network (OSTI)

Fe3O4-LiMo3Se3 Nanoparticle Clusters as Superparamagnetic Nanocompasses Frank E. Osterloh,*, Hiroki bacteria is described. LiMo3Se3-Fe3O4 nanowire-nanoparticle composites were synthesized by a reaction of 3-iodopropionic acid treated LiMo3Se3 nanowire bundles with oleic acid-stabilized Fe3O4 nanoparticles of 2.8, 5

Osterloh, Frank

433

The impact of alpha/Fe enhanced stellar evolutionary tracks on the ages of elliptical galaxies  

E-Print Network (OSTI)

We complement our study of alpha/Fe enhanced stellar population models of Lick absorption indices (Thomas et al. 2003) by comparing two sets of alpha/Fe enhanced models. In both models the impact on Lick indices due to alpha/Fe enhancement is accounted for through a modification of the stellar absorption line-strengths using the response functions of Tripicco & Bell (1995). One set of models, however, uses solar-scaled, the other alpha/Fe enhanced stellar evolutionary tracks. Since the alpha/Fe enhanced tracks are hotter than the solar-scaled ones (Salasnich et al. 2000), the correspondent stellar population models have slightly weaker metallic indices (i.e. Mgb, etc.) and stronger Balmer line indices (Hbeta) (Maraston et al 2003). Here we explore quantitatively the impact of this effect on the alpha/Fe ratios, metallicities and ages that are derived for elliptical galaxies. We find that the modest decrease of the metallic indices Mgb and balance each other, such that fully consistent alpha/Fe ratios are derived for stellar systems using alpha/Fe enhanced models with either solar-scaled or alpha/Fe enhanced stellar tracks. The decrease of the metallic indices and the increase of Hbeta conspire in a way that also consistent metallicities are obtained. The derived ages, instead, are significantly different. The inclusion of alpha/Fe enhanced stellar tracks leads to the derivation of ages as high as 30 Gyr for elliptical galaxies. For the same objects, ages not older than 15 Gyr are obtained, if alpha/Fe enhanced models using solar-scaled tracks are adopted. This may indicate that current stellar evolutionary models overestimate the bluing of stellar evolutionary tracks due to alpha/Fe enhanced chemical mixtures at super-solar metallicities.

Daniel Thomas; Claudia Maraston

2003-02-04T23:59:59.000Z

434

Controlling ferromagnetism of (In,Fe)As semiconductors by electron doping  

SciTech Connect

Based on experimental results, using the Korringa-Kohn-Rostoker coherent potential approximation (KKR-CPA) method and Monte Carlo simulation, we study the mechanism of ferromagnetic behavior of (In,Fe)As. We show that with doped Be atoms occupying in interstitial sites, chemical pair interactions between atoms and magnetic exchange interactions between Fe atoms change due to electron concentration. Therefore, by controlling the doping process, magnetic behavior of (In,Fe)As is controlled and ferromagnetism is observed in this semiconductor.

Dang Vu, Nguyen; Fukushima, Tetsuya; Katayama-Yoshida, Hiroshi [Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka 560-8531 (Japan); Sato, Kazunori [Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871 (Japan)

2014-02-21T23:59:59.000Z

435

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

436

Bimetallic Fe–Ni Oxygen Carriers for Chemical Looping Combustion  

Science Journals Connector (OSTI)

(2-4) In CLC (schematic in Figure 1), a fuel is combusted in a fuel reactor (“reducer”) in contact with an oxygen carrier (typically a metal oxide). ... After combustion of the fuel, the reduced metal is then transferred to the air reactor (“oxidizer”) where it is reoxidized by air, and then circulated back to the reducer to close the material “loop”. ... Son, S. R.; Kim, S. D.Chemical-looping combustion with NiO and Fe2O3 in a thermobalance and circulating fluidized bed reactor with double loops Ind. Eng. ...

Saurabh Bhavsar; Götz Veser

2013-05-20T23:59:59.000Z

437

Inelastic scattering of fast neutrons from $^{56}$Fe  

E-Print Network (OSTI)

Inelastic scattering of fast neutrons from $^{56}$Fe was studied at the photoneutron source nELBE. The neutron energies were determined on the basis of a timeof- flight measurement. Gamma-ray spectra were measured with a high-purity germanium detector. The total scattering cross sections deduced from the present experiment in an energy range from 0.8 to 9.6 MeV agree within 15% with earlier data and with predictions of the statistical-reaction code Talys.

Beyer, R; Hannaske, R; Junghans, A R; Massarczyk, R; Anders, M; Bemmerer, D; Ferrari, A; Kögler, T; Röder, M; Schmidt, K; Wagner, A

2014-01-01T23:59:59.000Z

438

Balmer Absorption Lines in FeLoBALs  

E-Print Network (OSTI)

We discovered non-stellar Balmer absorption lines in two many-narrow-trough FeLoBALs (mntBALs) by the near-infrared spectroscopy with Subaru/CISCO. Presence of the non-stellar Balmer absorption lines is known to date only in the Seyfert galaxy NGC 4151, thus our discovery is the first cases for quasars. Since all known active galactic nuclei with Balmer absorption lines share characteristics, it is suggested that there is a population of BAL quasars which have unique structures at their nuclei or unique evolutionary phase.

K. Aoki; I. Iwata; K. Ohta; N. Tamura; M. Ando; M. Akiyama; G. Kiuchi; K. Nakanishi

2006-12-14T23:59:59.000Z

439

Magnetic structures and interplay between rare-earth Ce and Fe magnetism in single-crystal CeFeAsO  

SciTech Connect

Neutron and synchrotron resonant x-ray magnetic scattering (RXMS) complemented by heat capacity and resistivity measurements reveal the evolution of the magnetic structures of Fe and Ce sublattices in a CeFeAsO single crystal. The RXMS of magnetic reflections at the Ce LII edge shows a magnetic transition that is specific to the Ce antiferromagnetic long-range ordering at TCe? 4 K with short-range Ce ordering above TCe, whereas neutron diffraction measurements of a few magnetic reflections indicate a transition at T?? 12 K with an unusual order parameter. Detailed order-parameter measurements on several magnetic reflections by neutrons show a weak anomaly at 4 K that we associate with the Ce ordering. The successive transitions at TCe and T? can also be clearly identified by two anomalies in heat capacity and resistivity measurements. The higher transition temperature at T?? 12 K is mainly ascribed to Fe spin reorientation transition, below which Fe spins rotate uniformly and gradually in the ab plane. The Fe spin reorientation transition and short-range Ce ordering above TCe reflect the strong Fe-Ce couplings prior to long-range ordering of the Ce. The evolution of the intricate magnetic structures in CeFeAsO going through T? and TCe is proposed.

Zhang, Qiang [Ames Laboratory; Tian, Wei [Ames Laboratory; Li, Haifeng [Ames Laboratory; Kim, Jong-Woo [Argonne Naitonal Laboratory; Yan, Jiaqiang [Ames Laboratory; McCallum, Robert William [Ames Laboratory; Lograsso, Thomas A. [Ames Laboratory; Zarestky, Jerel L. [Ames Laboratory; Budko, Sergey L. [Ames Laboratory; McQueeney, Robert J. [Ames Laboratory; Vaknin, David [Ames Laboratory

2013-11-27T23:59:59.000Z

440

Effect of Zn, Mn, and Fe on Cd accumulation in phytoplankton ...  

Science Journals Connector (OSTI)

We examined the effect of important controlling factors (free ion concentrations of Cd, Zn, and Mn and Fe limitation of growth rate) on Cd accumulation by an ...

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


441

Investigation of Chemical Looping Combustion of Coal with CuFe2O4 Oxygen Carrier  

Science Journals Connector (OSTI)

Investigation of Chemical Looping Combustion of Coal with CuFe2O4 Oxygen Carrier ... Industrial & Engineering Chemistry Research2013 52 (5), 1795-1805 ...

Baowen Wang; Rong Yan; Haibo Zhao; Ying Zheng; Zhaohui Liu; Chuguang Zheng

2011-06-15T23:59:59.000Z

442

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

SciTech Connect

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

443

Fe(III) Reduction and U(VI) Immobilization by Paenibacillus sp...  

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

by Paenibacillus sp. Strain 300A, Isolated from Hanford 300A Subsurface Sediments. Fe(III) Reduction and U(VI) Immobilization by Paenibacillus sp. Strain 300A,...

444

E-Print Network 3.0 - al si fe Sample Search Results  

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

morphology... -section of a strut showing the microstructure. Dendrites of -Al and eutectic structure of Al-Si with needles of - AlFeSi... . ... Source: Groningen,...

445

validation_inv_qs55_fe_and_analytical_dry.eps  

E-Print Network (OSTI)

Page 1. 0. 50. 100. 150. 2. Frequency (Hz). 0. 50. 100. 150. 200. 1000/Q. FE values. analytical values. 55.

santos

446

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

447

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

448

Isotopic Fractionation of Mg2+(aq), Ca2+(aq), and Fe2+(aq) with...  

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

of Mg2+(aq), Ca2+(aq), and Fe2+(aq) with Carbonate Minerals. Abstract: Density functional electronic structure calculations are used to compute the equilibrium constant (the...

449

The Raised Midpoint Potential of the [2Fe2S] Cluster of Cytochrome...  

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

To further investigate this issue, Fe-S protein-Q interactions were monitored by EPR spectroscopy and the findings indicated that the wild type and mutant proteins...

450

Kinetic Analysis of Microbial Reduction of Fe(III) in Nontronite...  

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

affinity constant 2.3 and 2.25 for nontronite and cells, respectively. The Fe(II) sorption capacity of nontronite, however, decreased with increasing nontronite concentration,...

451

Structure of epitaxial (Fe,N) codoped rutile TiO2 thin films...  

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

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...

452

Magnetic depth profiling of Fe/Au multilayer using neutron reflectometry  

Science Journals Connector (OSTI)

We present unpolarized and polarized neutron reflectometry data on Fe/Au multilayer sample for ... substrate by RF magnetron sputtering technique. Unpolarized neutron reflectivity measurement yields nuclear scatt...

Surendra Singh; Saibal Basu; M. Gupta

2008-11-01T23:59:59.000Z

453

Report on International Collaboration Involving the FE Heater and HG-A Tests at Mont Terri  

E-Print Network (OSTI)

March Report on International Collaboration Involving the FEReport on International Collaboration Involving the FEviii Report on International Collaboration Involving the FE

Houseworth, Jim

2014-01-01T23:59:59.000Z

454

Iron(III) Oxide Nanoparticles in the Thermally Induced Oxidative Decomposition of Prussian Blue, Fe4[Fe(CN)6]3  

Science Journals Connector (OSTI)

Iron(III) Oxide Nanoparticles in the Thermally Induced Oxidative Decomposition of Prussian Blue, Fe4[Fe(CN)6]3 ... Iron(III) oxides, particularly in the form of nanoparticles, are being used as catalysts, pigments, gas sensors, contrast agents in the magnetic resonance imaging, magnetic storage media, and furthermore, as basic components in the ferrofluid technologies or in biomagnetic separation processes. ... Structural and magnetic properties, methods of synthesis, and applications of seven Fe(III) oxide polymorphs, including rare beta, epsilon, amorphous, and high-pressure forms, are reviewed. ...

Radek Zboril; Libor Machala; Miroslav Mashlan; Virender Sharma

2004-10-05T23:59:59.000Z

455

Proton spectroscopy of 48Ni, 46Fe, and 44Cr  

E-Print Network (OSTI)

Results of decay spectroscopy on nuclei in vicinity of the doubly magic 48Ni are presented. The measurements were performed with a Time Projection Chamber with optical readout which records tracks of ions and protons in the gaseous volume. Six decays of 48Ni including four events of two-proton ground-state radioactivity were recorded. An advanced reconstruction procedure yielded the 2p decay energy for 48Ni of Q2p = 1.29(4) MeV. In addition, the energy spectra of \\b{eta}-delayed protons emitted in the decays of 44Cr and 46Fe, as well as half-lives and branching ratios were determined. The results were found to be consistent with the previous measurements made with Si detectors. A new proton line in the decay of 44Cr corresponding to the decay energy of 760 keV is reported. The first evidence for the \\b{eta}2p decay of 46 Fe, based on one clear event, is shown.

M. Pomorski; M. Pfützner; W. Dominik; R. Grzywacz; A. Stolz; T. Baumann; J. S. Berryman; H. Czyrkowski; R. D?browski; A. Fija?kowska; T. Ginter; J. Johnson; G. Kami?ski; N. Larson; S. N. Liddick; M. Madurga; C. Mazzocchi; S. Mianowski; K. Miernik; D. Miller; S. Paulauskas; J. Pereira; K. P. Rykaczewski; S. Suchyta

2014-07-06T23:59:59.000Z

456

Interdiffusion Behavior of Aluminide Coatings on Fe-Base Alloys  

SciTech Connect

One of the potential degradation modes of oxidation-resistant iron aluminide coatings is the loss of Al from the coatings into Fe-base substrate alloys that typically contain no Al. To address this issue, interdiffusion between aluminide coatings and steel substrates was studied for times up to 10,000 h in the temperature range of 500-800 C. Coatings were synthesized in a laboratory chemical vapor deposition (CVD) reactor on representative commercial ferritic alloy Fe-9Cr-1Mo and type 304L austenitic stainless steel. The microstructural and compositional changes after diffusion anneals were examined in detail. An initial attempt to model the interdiffusion behavior was carried out by applying an existing software program COSIM (coating oxidation and substrate interdiffusion model). Complementary work was conducted using a simple mathematic model developed by Heckel et al. Reasonable agreement was observed between the simulated and experimental composition profiles for the aluminide coatings on ferritic alloys. Model results were then applied to predict coating lifetime.

Zhang, Ying [Tennessee Technological University; Liu, A. P. [Tennessee Technological University; Pint, Bruce A [ORNL

2007-01-01T23:59:59.000Z

457

Band-theoretical investigation of the magneto-optical Kerr effect in Fe and Co multilayers  

Science Journals Connector (OSTI)

A band theory of the magneto-optical (MO) properties of solids, based on the first-principles spin-polarized, relativistic linear muffin-tin orbital method, is described. Two expressions of the relativistic electron-photon-interaction matrix elements are implemented and their accuracies are investigated. It is found that the spin-polarized, relativistic band theory, together with the expression of the photon-absorption matrix elements, is able to give reliable optical conductivity and MO Kerr rotation spectra of bcc Fe that agree well with both experiments and recent calculations using a different method. The MO properties of several Fe and Co multilayers [Fe(Co)2Cu6 fcc-(001), FeCu(Ag)5 fcc-(001), bcc-Fe/fcc-Ag5 (001), bcc-Fen/fcc-Au5 (001) (n=1,3), Co2Pd4 fcc-(111), and Co2Ptm fcc-(111) (m=1,4,7)] are then investigated theoretically. The calculated MO Kerr effect in all the multilayers except Co2Pt1 fcc-(111) is not larger than in bulk Fe and Co. Nevertheless, the results suggest that materials with larger Kerr rotations can be achieved by making Fe (Co) superlattices with ultrathin layers (few monolayers thick) of heavy elements possessing a partially filled d band (e.g., Pt and Os).Kerr rotation spectra for Fe(Co)/Cu(Ag, Au, Pd, Pt) bilayers [i.e., a thin layer of Fe (Co) on the Cu (Ag, Au, Pd, Pt) substrate] are also obtained from the calculated optical conductivity tensors of Fe, Co, Cu, Ag, Au, Pd, and Pt. It is found that the MO Kerr effect in the Fe (Co)/noble-metal bilayers is considerably enhanced near the plasma edge of the substrate. This indicates that one can obtain good MO materials by fabricating Fe (Co) bilayers using nonmagnetic metals with a sharp plasma edge (e.g., Ag and Al) as substrates. Calculated Kerr rotation spectra of the Fe and Co multilayers as well as bilayers are in satisfactory agreement with available experiments. The spin and orbital magnetic moments in the Fe and Co multilayers are also calculated, and possible correlations between these and MO properties of the Fe and Co multilayers are discussed.

G. Y. Guo and H. Ebert

1995-05-01T23:59:59.000Z

458

Multiferroic properties of Pb{sub 2}Fe{sub 2}O{sub 5} ceramics  

SciTech Connect

Research highlights: {yields} Simultaneous occurrence of ferromagnetism and ferroelectricity in Pb{sub 2}Fe{sub 2}O{sub 5} ceramics. {yields} The off-centers of shifted Pb{sup 2+} ions as well as the FeO{sub 6} octahedra in the 'Pb{sub 2}Fe{sub 2}O{sub 5}' lead to a ferroelectric polarization. {yields} Pb{sub 2}Fe{sub 2}O{sub 5} ceramic demonstrates ferromagnetic order state due to the spin arrangement in the double chains of FeO{sub 5} tetrahedral pyramids. -- Abstract: Pb{sub 2}Fe{sub 2}O{sub 5} (PFO) powders in monoclinic structure have been synthesized using lead acetate in glycerin and ferric acetylacetonate as the precursor. The powders were pressed into pellets, which were sintered into ceramics at 800 {sup o}C for 1 h. The morphology and structure have been determined by X-ray diffraction (XRD) and field emission scanning electron microscopy (FESEM). Polarization was observed in Pb{sub 2}Fe{sub 2}O{sub 5} ceramics at room temperature, exhibiting a clear ferroelectric hysteresis loop. The remanent polarization of Pb{sub 2}Fe{sub 2}O{sub 5} ceramic is estimated to be Pr {approx} 0.22 {mu}C/cm{sup 2}. The origin of the polarization may be attributed to the off-centers of shifted Pb{sup 2+} ions as well as the FeO{sub 6} octahedra in the perovskite-based structure of Pb{sub 2}Fe{sub 2}O{sub 5}. Magnetic hysteresis loop was also observed at room temperature. The Pb{sub 2}Fe{sub 2}O{sub 5} ceramic shows coexistence of ferroelectricity and ferromagnetism. It provides a new field of research for complex oxides with multiferroic properties.

Wang, Min [State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, 122 Luoshi Road, Wuhan 430070 (China)] [State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, 122 Luoshi Road, Wuhan 430070 (China); Tan, Guolong, E-mail: gltan@whut.edu.cn [State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, 122 Luoshi Road, Wuhan 430070 (China)] [State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, 122 Luoshi Road, Wuhan 430070 (China)

2011-03-15T23:59:59.000Z

459

Si and Fe depletion in Galactic star-forming regions observed by the Spitzer Space Telescope  

E-Print Network (OSTI)

We report the results of the mid-infrared spectroscopy of 14 Galactic star-forming regions with the high-resolution modules of the Infrared Spectrograph (IRS) on board the Spitzer Space Telescope. We detected [SiII] 35um, [FeII] 26um, and [FeIII] 23um as well as [SIII] 33um and H2 S(0) 28um emission lines. Using the intensity of [NII] 122um or 205um and [OI] 146um or 63um reported by previous observations in four regions, we derived the ionic abundance Si+/N+ and Fe+/N+ in the ionized gas and Si+/O0 and Fe+/O0 in the photodissociation gas. For all the targets, we derived the ionic abundance of Si+/S2+ and Fe2+/S2+ for the ionized gas. Based on photodissociation and HII region models the gas-phase Si and Fe abundance are suggested to be 3-100% and solar abundance, respectively, for the ionized gas and 16-100% and 2-22% of the solar abundance, respectively, for the photodissociation region gas. Since the [FeII] 26um and [FeIII] 23um emissions are weak, the high sensitivity of the IRS enables to derive the gas-phase Fe abundance widely in star-forming regions. The derived gas-phase Si abundance is much larger than that in cool interstellar clouds and that of Fe. The present study indicates that 3-100% of Si atoms and <22% of Fe atoms are included in dust grains which are destroyed easily in HII regions, probably by the UV radiation. We discuss possible mechanisms to account for the observed trend; mantles which are photodesorbed by UV photons, organometallic complexes, or small grains.

Yoko Okada; Takashi Onaka; Takashi Miyata; Yoshiko K. Okamoto; Itsuki Sakon; Hiroshi Shibai; Hidenori Takahashi

2008-04-10T23:59:59.000Z

460

Is there a future for semiconducting silicides? (invited)  

Science Journals Connector (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

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


461

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):

462

Magnetization dynamics and interface studies in ion-beam sputtered Si/CoFeB(8)/MgO(4)/CoFeB(8)/Ta(5) structures  

SciTech Connect

The interface roughness, Boron distribution in bulk CoFeB and at interface, Gilbert damping constant (?), and inhomogeneous broadening in ion-beam sputtered Si/CoFeB(8)/MgO(4)/CoFeB(8)/Ta(5) structures are found to be sensitive to the MgO growth process. The ion-assist and reactive growth processes that result in sharper interfaces of width ?0.5?nm lead to smaller ? of 0.0050?±?0.0003 and 0.0060?±?0.0002 and inhomogeneous broadening ?H{sub 0} of 3?±?0.3 and 1?±?0.3?Oe, respectively. On the other hand, the post-oxidation method results in rough interface and higher retention of Boron in CoFeB leading to higher values for ? and ?H{sub 0} as 0.0080?±?0.0006 and 5?±?0.3?Oe, respectively.

Raju, M.; Behera, Nilamani; Pandya, Dinesh K., E-mail: dkpandya@physics.iitd.ac.in; Chaudhary, Sujeet [Thin Film Laboratory, Department of Physics, Indian Institute of Technology Delhi, New Delhi 110016 (India)

2014-05-07T23:59:59.000Z

463

Role of cross-shell excitations in the reaction 54Fe(d_pol,p)55Fe  

E-Print Network (OSTI)

The reaction 54Fe(d_pol,p)55Fe was studied at the Munich Q3D spectrograph with a 14 MeV polarized deuteron beam. Excitation energies, angular distributions and analyzing powers were measured for 39 states up to 4.5 MeV excitation energy. Spin and parity assignments were made and spectroscopic factors deduced by comparison to DWBA calculations. The results were compared to predictions by large scale shell model calculations in the full pf-shell and it was found that reasonable agreement for energies and spectroscopic factors below 2.5 MeV could only be obtained if up to 6 particles were allowed to be excited from the f_7/2 orbital into p_3/2, f_5/2, and p_1/2 orbitals across the N=28 gap. For levels above 2.5 MeV the experimental strength distribution was found to be significantly more fragmented than predicted by the shell model calculations.

M. Mahgoub; R. Kruecken; Th. Faestermann; A. Bergmaier; D. Bucurescu; R. Hertenberger; Th. Kroell; H. -F. Wirth; A. F. Lisetskiy

2008-10-21T23:59:59.000Z

464

Iron self-diffusion in amorphous FeZr?Fe57Zr multilayers measured by neutron reflectometry  

Science Journals Connector (OSTI)

Self-diffusion of iron in Fe67naturalZr33?Fe6757Zr33 multilayers has been investigated by neutron reflectometry. The as-deposited multilayer is amorphous in nature. It remains amorphous up to a temperature of 573K and thereafter nanocrystallizes with an average grain size of 6nm. The self-diffusion in the multilayers has been measured after isothermal vacuum annealing below the nanocrystallization temperature by monitoring the decay of the intensity of the first order Bragg peak, arising due to the isotopic periodicity. It has been found that the diffusivity at different temperatures follows an Arrhenius-type behavior with the preexponential factor D0=5×10?18±1m2s?1 and the activation energy E=0.38±0.05eV, respectively. These values of E and D0 follow the well-known E–D0 correlation and on the basis of this correlation it is suggested that diffusion mechanism in the present case is not highly collective but involves a rather small group of atoms.

Mukul Gupta; Ajay Gupta; J. Stahn; M. Horisberger; T. Gutberlet; P. Allenspach

2004-11-18T23:59:59.000Z

465

In Situ Characterization of CuFe2O4 and Cu/Fe3O4 Water-Gas Shift Catalysts Michael Estrella,  

E-Print Network (OSTI)

the performance of the Pt electrode in fuel cell systems. In order to get clean hydrogen for fuel cells and otherIn Situ Characterization of CuFe2O4 and Cu/Fe3O4 Water-Gas Shift Catalysts Michael Estrella, LauraVised Manuscript ReceiVed: June 19, 2009 Mixtures of copper and iron oxides are used as industrial catalysts

Frenkel, Anatoly

466

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.

467

Ultrafine FePt Nanoparticles Prepared by the Chemical Reduction Method  

E-Print Network (OSTI)

of about 2 nm have been prepared by 1,2-hexadecanediol reduction of iron acetylacetonate and platinum acetylacetonate in dioctyl ether. The as-synthesized particles have a chemically disordered fcc structure and canPt nanoparticles via the simultaneous reduction of FeCl2 and Pt(acac)2 as well as Fe and Pt acetylacetonate has

Wang, Zhong L.

468

Reduction of Sintering during Annealing of FePt Nanoparticles Coated with Iron Oxide  

E-Print Network (OSTI)

are first obtained by reduction of iron(III) acetylacetonate and platinum(II) acetylacetonateReduction of Sintering during Annealing of FePt Nanoparticles Coated with Iron Oxide Chao LiuVised Manuscript ReceiVed October 12, 2004 FePt/iron oxide core/shell nanoparticles are synthesized by a two step

Laughlin, David E.

469

Real-Time Imaging of Pt3Fe Nanorod Growth in Solution  

Science Journals Connector (OSTI)

...real time. A growth solution of Pt(acetylacetonate) 2 (20 mg/mL) and Fe(acetylacetonate) 2 (20 mg/mL) dissolved in a solvent...real time. A growth solution of Pt(acetylacetonate)2 (20 mg/mL) and Fe(acetylacetonate...

Hong-Gang Liao; Likun Cui; Stephen Whitelam; Haimei Zheng

2012-05-25T23:59:59.000Z

470

SEMI-ANNUAL REPORTS FOR VENTURE GLOBAL, LLC - FE DKT. NO. 13...  

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

VENTURE GLOBAL, LLC - FE DKT. NO. 13-69-LNG (ORDER 3345) AND 14-88-LNG SEMI-ANNUAL REPORTS FOR VENTURE GLOBAL, LLC - FE DKT. NO. 13-69-LNG (ORDER 3345) AND 14-88-LNG October 2014...

471

Applicability of Anaerobic Nitrate-Dependent Fe(II) Oxidation to Microbial Enhanced Oil Recovery (MEOR)  

Science Journals Connector (OSTI)

Furthermore, both of the substrates of the NDFO organisms [Fe(II) and nitrate] and the various end products of the metabolism [Fe(III), nitrite, nitric oxide, and nitrous oxide] all have known anti-souring and sulfide-scouring activities. ... A glass wool pad was placed on the bottom of the bead beds to prevent beads from falling into the inlet tubing. ...

Hongbo Zhu; Han K. Carlson; John D. Coates

2013-06-25T23:59:59.000Z

472

SEMI-ANNUAL REPORTS FOR SB POWER SOLUTIONS INC. - FE DKT. NO...  

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

ORDER 3019 SEMI-ANNUAL REPORTS FOR GULF COAST LNG EXPORT, LLC - FE DKT. NO. 12-05-LNG - ORDER 3163 SEMI-ANNUAL REPORTS FOR JORDAN COVE LNG L.P. - FE DKT. NO. 13-141-LNG - ORDER 341...

473

Magnetic Excitations in Ho2Co17and Ho2Fe17  

E-Print Network (OSTI)

v_ (C a 2 Riso-R-426 Magnetic Excitations in Ho2Co17and Ho2Fe17 An Inelastic Neutron Scattering MAGNETIC EXCITCATIONS IN H02C017 AND H02Fe-j7 AN INELASTIC NEUTRON SCATTERING STUDY K.N. Clausen Abstract. The low energy part (magnetic exci- tation spectrum of the uniaxial easy basal plane

474

First-principles study of iron oxyfluorides and lithiation of FeOF  

E-Print Network (OSTI)

First-principles studies of iron oxyfluorides in the FeF[subscript 2] rutile framework (FeO[subscript x]F[subscript 2?x], 0?x?1) are performed using density functional theory (DFT) in the general gradient approximation ...

Chevrier, Vincent L.

475

Fe thin-film growth on Au(100): A self-surfactant effect and its limitations  

Science Journals Connector (OSTI)

The combination of low-energy electron diffraction intensity analyses and scanning tunneling microscopy was used to investigate the morphology and atomic structure of thin Fe films grown on Au(100) at 400 K. Deposition of only about 0.2 monolayers (ML) Fe is sufficient to lift the reconstruction of the clean substrate. In the initial growth process (<~1 ML) place exchanges between Fe and Au lead to almost two-dimensional subsurface Fe film growth with one layer of Au covering the entire film. This way, gold acts as a “self-surfactant.” Yet, there are deviations from two-dimensional growth, with a second Fe layer beginning to grow before the first one is fully completed and some substitutional disorder developing in the film because of incomplete place exchange. The amount of gold floating on the surface only gradually decreases with further increasing film thickness. At about 2 ML the surface undergoes a complete restructuring during which short “wormlike” chains of atoms form and long-range order is destroyed. Nevertheless, the existence of large terraces of little roughness proves that some surface activity of gold remains. At coverages of several ML, long-range order is reestablished with the Fe film growing in an undistorted bcc arrangement. Although parts of the film are still covered by gold, the surface morphology is not very different from that known for homoepitaxial growth of Fe on Fe(100), i.e., gold has stopped to serve as a “self-surfactant.”

V. Blum, Ch. Rath, S. Müller, L. Hammer, K. Heinz, J. M. García, J. E. Ortega, J. E. Prieto, O. S. Hernán, J. M. Gallego, A. L. Vázquez de Parga, and R. Miranda

1999-06-15T23:59:59.000Z

476

FE Electrical Report 2005-2006 By: Chris Dudasik, Tianyi Li, and Jeff Schvey  

E-Print Network (OSTI)

, batteries, or general electrical theory, please see the Fe Electrical Team Report ­ Spring 2005 or the Fe the ground, the metal strip connected to the lever of the limit switch presses up against the case; this causes the signal wire to read +0v. When the foot is in the air, the strip is depressed and the signal

Ruina, Andy L.

477

Laser cladding of quasicrystal forming AlCuFe on aluminum Krishanu Biswas a  

E-Print Network (OSTI)

Laser cladding of quasicrystal forming Al­Cu­Fe on aluminum Krishanu Biswas a , Rolf Galun b-Zellerfeld, Germany Abstract Composite quasicrystalline coatings are developed by laser cladding of an elemental of the primary phase inside the clad layers during laser processing. The formation of Al13Fe4 with a ten

Srivastava, Kumar Vaibhav

478

Structure and magnetic properties of nanophase- LiFe 1.5 P 2 O 7  

Science Journals Connector (OSTI)

The structure and magnetic properties of lithiumiron pyrophosphate i.e. Li 2 Fe 3 ( P 2 O 7 ) 2 or LiFe 1.5 P 2 O 7 synthesized using a facile metal acetate approach for application in lithium-ion batteries are investigated in detail. The high-resolution transmission electron microscopy selected area electron diffraction and x-ray diffraction measurements indicate that Li 2 Fe 3 ( P 2 O 7 ) 2 is crystallized in the monoclinic structure without any indication of crystallographic defects such as dislocations or misfits and exhibit smooth surface morphology. The evaluated lattice parameters are a = 0.698 ? 76 ? nm b = 0.812 ? 36 ? nm c = 0.964 ? 22 ? nm and ? = 111.83 ° ( P 2 1 / c space group). Infrared spectroscopic measurements indicate the presence of P 2 O 7 groups which are formed by the two PO 4 tetrahedral groups connected together. The magnetic measurements indicate that Li 2 Fe 3 ( P 2 O 7 ) 2 is a weak antiferromagnetic material with T N = 20 ? K exhibiting a Curie constant C p = 3.38 ? emu ? K / mol per Fe ion and a negative value of the Weiss temperature ( ? p = ? 15 ? K ) . The absence of higher valence state Fe impurities and antiferromagnetic interactions due to the greater distance between two equivalent magnetic ions which vanishes the Fe–O–Fe superexchange interactions is confirmed.

C. V. Ramana; M. Kopec; A. Mauger; F. Gendron; C. M. Julien

2009-01-01T23:59:59.000Z

479

Impact of Fe (III) on the Performance of Viscoelastic Surfactant-Based Acids  

E-Print Network (OSTI)

viscosity of live VES-based acids (20 wt% HCl, 4 vol% VES) increased from 3 to 131 cp at a shear rate of 100 s-1 at room temperature when the Fe (III) concentration increased from 0 to 2,300 ppm, and started to decrease at higher Fe (III) concentrations...

Shu, Yi

2013-08-02T23:59:59.000Z

480

Fe(II) Sorption on a Synthetic Montmorillonite. A Combined Macroscopic and Spectroscopic Study  

E-Print Network (OSTI)

Fe(II) Sorption on a Synthetic Montmorillonite. A Combined Macroscopic and Spectroscopic Study fine structure (EXAFS) and Mossbauer spectroscopy combined with macroscopic sorption experiments were employed to investigate the sorption mechanism of Fe(II) on an iron-free synthetic montmorillonite (Na

Wehrli, Bernhard

Note: This page contains sample records for the topic "bh fe ru" from the National Library of EnergyBeta (NLEBeta).
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481

Electrical resistivity and thermal conductivity of liquid Fe alloys at high P and T, and  

E-Print Network (OSTI)

Electrical resistivity and thermal conductivity of liquid Fe alloys at high P and T, and heat flux to crystallize (1, 4). Existing estimates of thermal conductivity (kel) and electrical resistivity (el) of Earth of electrical resistivity to temperature, its invariability along and across the Fe liquidus, and adherence

Steinle-Neumann, Gerd

482

A nuclear magnetic resonance probe of Fe-Al and Al20V2Eu intermetallics  

E-Print Network (OSTI)

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...

Chi, Ji

2009-05-15T23:59:59.000Z

483

Magnetization and Fe57 hyperfine fields in Y2Fe17Z3-?(Z=H, C, or N) interstitial compounds  

Science Journals Connector (OSTI)

Measured magnetization and Fe57 hyperfine fields at T?0 K for Y2Fe17 and Y2Fe17Z3-?, with Z=H, C, or N and ??0.5, are analyzed to determine the influence of the interstitial atoms on the 3d magnetism. All are weak ferromagnets with a nearly-full 3d subband, although when Z=N, the magnetic moment of 38.1?B is very close to the fully saturated value of 39.4?B. On a local scale, the order of hyperfine fields Bhf4f(=35 T)>Bhf6g (=33 T)>Bhf12j (=30 T)>Bhf12k (=28 T) is different from that of the local magnetic moments given by several recent band calculations for Y2Fe17, ?4f (=2.5?B)>?12j (=2.2?B)>?12k (=2.0?B)>?6g (=1.9 ?B), reflecting a large 4s-transferred hyperfine field at 6g sites which have very short Fe-Fe distances. The volume of samples with Z=C and N are identical, and so the chemical effects of the interstitials can be distinguished; both the local magnetic moment and hyperfine fields are systematically smaller in the carbide than the nitride by 5% and 12%, respectively.

Qi-nian Qi, Hong Sun, R. Skomski, and J. M. D. Coey

1992-06-01T23:59:59.000Z

484

Controllable synthesis, magnetic and biocompatible properties of Fe{sub 3}O{sub 4} and {alpha}-Fe{sub 2}O{sub 3} nanocrystals  

SciTech Connect

Iron oxide nanocrystals (NCs) with a series of well-controlled morphologies (octahedron, rod, wire, cube and plate) and compositions (Fe{sub 3}O{sub 4} and {alpha}-Fe{sub 2}O{sub 3}) were synthesized via a facile hydrothermal process. The morphological and compositional control of various iron oxide NCs was based on the regulations of precursor thermolysis kinetics and surfactants. The obtained samples were characterized by XRD, SEM, TEM, SQUID and cytotoxicity test. These as-prepared iron oxide NCs showed excellent magnetic properties and good biocompatibility, paving the way for their high-efficiency bio-separation and bio-detection applications. - Graphical Abstract: Schematic illustration for the formation of iron oxide NCs (Fe{sub 3}O{sub 4} and {alpha}-Fe{sub 2}O{sub 3}) with different controlled morphologies and compositions. Highlights: Black-Right-Pointing-Pointer Iron oxide NCs with a series of well-controlled morphologies (octahedron, rod, wire, cube, and plate) and compositions (Fe{sub 3}O{sub 4} and {alpha}-Fe{sub 2}O{sub 3}) were synthesized via a facile hydrothermal method. Black-Right-Pointing-Pointer The mechanism of the morphological and compositional control process is directly related to precursor thermolysis kinetics and surfactants. Black-Right-Pointing-Pointer These iron oxide NCs exhibited excellent magnetic response and good biocompatibility, which should have great applications in the cell separation and biodetection.

Zhou, Xi, E-mail: xizhou@xmu.edu.cn [Research Center of Biomedical Engineering, Department of Biomaterials, College of Materials, The Key Laboratory of Biomedical Engineering of Fujian Province, Xiamen University, Xiamen, Fujian 361005 (China)] [Research Center of Biomedical Engineering, Department of Biomaterials, College of Materials, The Key Laboratory of Biomedical Engineering of Fujian Province, Xiamen University, Xiamen, Fujian 361005 (China); Shi, Yanfeng; Ren, Lei [Research Center of Biomedical Engineering, Department of Biomaterials, College of Materials, The Key Laboratory of Biomedical Engineering of Fujian Province, Xiamen University, Xiamen, Fujian 361005 (China)] [Research Center of Biomedical Engineering, Department of Biomaterials, College of Materials, The Key Laboratory of Biomedical Engineering of Fujian Province, Xiamen University, Xiamen, Fujian 361005 (China); Bao, Shixiong [State Key Laboratory for Physical Chemistry of Solid Surfaces and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005 (China)] [State Key Laboratory for Physical Chemistry of Solid Surfaces and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005 (China); Han, Yu; Wu, Shichao; Zhang, Honggang; Zhong, Lubin [Research Center of Biomedical Engineering, Department of Biomaterials, College of Materials, The Key Laboratory of Biomedical Engineering of Fujian Province, Xiamen University, Xiamen, Fujian 361005 (China)] [Research Center of Biomedical Engineering, Department of Biomaterials, College of Materials, The Key Laboratory of Biomedical Engineering of Fujian Province, Xiamen University, Xiamen, Fujian 361005 (China); Zhang, Qiqing, E-mail: zhangqiq@xmu.edu.cn [Research Center of Biomedical Engineering, Department of Biomaterials, College of Materials, The Key Laboratory of Biomedical Engineering of Fujian Province, Xiamen University, Xiamen, Fujian 361005 (China)] [Research Center of Biomedical Engineering, Department of Biomaterials, College of Materials, The Key Laboratory of Biomedical Engineering of Fujian Province, Xiamen University, Xiamen, Fujian 361005 (China)

2012-12-15T23:59:59.000Z

485

The Extended Fe Distribution in the Intracluster Medium and the Implications Regarding AGN Heating  

Science Journals Connector (OSTI)

We present a systematic analysis of XMM-Newton observations of eight cool-core clusters of galaxies and determine the Fe distribution in the intracluster medium relative to the stellar distribution in the central dominant galaxy (CDG). Our analysis shows that the Fe is significantly more extended than the stellar mass in the CDG in all of the clusters in our sample, with a slight trend of increasing extent with increasing central cooling time. The excess Fe within the central 100 kpc in these clusters can be produced by Type Ia supernovae from the CDG over the past 3-7 Gyr. Since the excess Fe primarily originates from the CDG, it is a useful probe for determining the motion of the gas and the mechanical energy deposited by AGN outbursts over the past ~5 Gyr in the centers of clusters. We explore two possible mechanisms for producing the greater extent of the Fe relative to the stars in the CDG, bulk expansion of the gas and turbulent diffusion of the Fe. Assuming that the gas and Fe expand together, we find that a total energy of 1060-1061 erg s?1 must have been deposited into the central 100 kpc of these clusters in order to produce the currently observed Fe distributions. Since the required enrichment time for the excess Fe is approximately 5 Gyr in these clusters, this gives an average AGN mechanical power over this time of 1043-1044 erg s?1. The extended Fe distribution in cluster cores can also arise from turbulent diffusion. Assuming a steady state (i.e., the outward mass flux of Fe across a given surface is equal to the mass injection rate of Fe within that surface), we find that diffusion coefficients of 1029-1030 cm2 s?1 are required in order to maintain the currently observed Fe profiles. We find that heating by both turbulent diffusion of entropy and dissipation are important heating mechanisms in cluster cores. In half of the clusters with central cooling times greater than 1 Gyr, we find that heating by turbulent diffusion of entropy alone can balance radiative losses. In the remaining clusters, some additional heating by turbulent dissipation, with turbulent velocities of 150-300 km s?1, is required in order to balance radiative cooling. We also find that the average Type Ia supernova fraction within the central 100 kpc of these clusters is 0.53 (roughly twice the solar value), on the basis of the Si-to-Fe mass ratio. This implies a total (Type Ia plus core-collapse) supernova heating rate of less than 10% of the bolometric X-ray luminosity within the centers of clusters.

Laurence P. David; Paul E. J. Nulsen

2008-01-01T23:59:59.000Z

486

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

487

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

488

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

489

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

490

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

491

Intrinsic magnetic properties of hexagonal LuFeO{sub 3} and the effects of nonstoichiometry  

SciTech Connect

We used oxide molecular-beam epitaxy in a composition-spread geometry to deposit hexagonal LuFeO{sub 3} (h-LuFeO{sub 3}) thin films with a monotonic variation in the Lu/Fe cation ratio, creating a mosaic of samples that ranged from iron rich to lutetium rich. We characterized the effects of composition variation with x-ray diffraction, atomic force microscopy, scanning transmission electron microscopy, and superconducting quantum interference device magnetometry. After identifying growth conditions leading to stoichiometric film growth, an additional sample was grown with a rotating sample stage. From this stoichiometric sample, we determined stoichiometric h-LuFeO{sub 3} to have a T{sub N} = 147 K and M{sub s} = 0.018 ?{sub B}/Fe.

Moyer, Jarrett A., E-mail: moyerja@illinois.edu, E-mail: schlom@cornell.edu; Schiffer, Peter [Department of Physics and Frederick Seitz Materials Research Laboratory, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801 (United States); Misra, Rajiv [Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802 (United States); Mundy, Julia A. [School of Applied and Engineering Physics, Cornell University, Ithaca, New York 14853 (United States); Brooks, Charles M.; Heron, John T. [Department of Materials Science and Engineering, Cornell University, Ithaca, New York 14853 (United States); Muller, David A. [School of Applied and Engineering Physics, Cornell University, Ithaca, New York 14853 (United States); Kavli Institute at Cornell for Nanoscale Science, Ithaca, New York 14853 (United States); Schlom, Darrell G., E-mail: moyerja@illinois.edu, E-mail: schlom@cornell.edu [Department of Materials Science and Engineering, Cornell University, Ithaca, New York 14853 (United States); Kavli Institute at Cornell for Nanoscale Science, Ithaca, New York 14853 (United States)

2014-01-01T23:59:59.000Z

492

Spreading of Sn-Ag solders on FeNi alloys  

SciTech Connect

The spreading of Sn-3Ag-xBi solders on Fe-42Ni has been studied using a drop transfer setup. Initial spreading velocities as fast as {app