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Note: This page contains sample records for the topic "ra zr hf" from the National Library of EnergyBeta (NLEBeta).
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1

The role of oxygen-related defects and hydrogen impurities in HfO2 and ZrO2  

Science Conference Proceedings (OSTI)

We investigate the properties of oxygen-related defects and hydrogen impurities in monoclinic HfO"2 and ZrO"2 using first-principles calculations based on a hybrid functional. We examine how the formation energy of these defects depend on the Fermi level ... Keywords: Defects in semiconductors, First-principles calculations, HfO2, High-k dielectrics, Hydrogen impurities, Oxygen interstitial, Oxygen vacancy, Sources of fixed charge, ZrO2

J. L. Lyons; A. Janotti; C. G. Van de Walle

2011-07-01T23:59:59.000Z

2

Continuous production of granular or powder Ti, Zr and Hf or their alloy products  

DOE Patents (OSTI)

A continuous process for producing a granular metal selected from the group consisting of Ti, Zr or Hf under conditions that provide orderly growth of the metal free of halide inclusions comprising: a) dissolving a reducing metal selected from the group consisting of Na, Mg, Li or K in their respective halide salts to produce a reducing molten salt stream; b) preparing a second molten salt stream containing the halide salt of Ti, Zr or Hf; c) mixing and reacting the two molten streams of steps a) and b) in a continuous stirred tank reactor; d) wherein steps a) through c) are conducted at a temperature range of from about 800.degree. C. to about 1100.degree. C. so that a weight percent of equilibrium solubility of the reducing metal in its respective halide salt varies from about 1.6 weight percent at about 900.degree. C. to about 14.4 weight percent at about 1062.degree. C.; and wherein a range of concentration of the halide salt of Ti, Zn or Hf in molten halides of Na, Mg, Li or K is from about 1 to about 5 times the concentration of Na, Mg, Li or K; e) placing the reacted molten stream from step c) in a solid-liquid separator to recover an impure granular metal product by decantation, centrifugation, or filtration; and f) removing residual halide salt impurity by vacuum evaporator or inert gas sweep at temperatures from about 850.degree. C. to 1000.degree. C. or cooling the impure granular metal product to ambient temperature and water leaching off the residual metal halide salt.

White, Jack C. (Albany, OR); Oden, Laurance L. (Albany, OR)

1993-01-01T23:59:59.000Z

3

Report on the Fracture Analysis of HfB{sub 2}-SiC and ZrB{sub 2}-SiC Composites  

DOE Green Energy (OSTI)

Hafnium diboride-silicon carbide (HS) and zirconium diboride-silicon carbide (ZS) composites are potential materials for high temperature, thermal shock applications such as for components on re-entry vehicles. In order to establish material constants necessary for evaluation of in situ fracture, bars fractured in four-point flexure were examined using fractographic principles. The fracture toughness was determined from measurements of the critical crack sizes and the strength values and the crack branching constants were established to use in forensic fractography for future in-flight tests. The fracture toughnesses range from about 13 MPam{sup 1/2} at room temperature to about 6 MPam{sup 1/2} at 1400 C for ZrB{sub 2}-Sic composites and from about 13 MPam{sup 1/2} at room temperature to about 4 MPam{sup 1/2} at 1400 C for HfB{sub 2}-SiC composites. Thus, the toughnesses of either the HS or ZS composites have the potential for use in thermal shock applications. Processing and manufacturing defects limited the strength of the test bars. However, examination of the microstructure on the fracture surfaces shows that the processing of these composites can be improved. There is potential for high toughness composites with high strength to be used in thermal shock conditions if the processing and handling are controlled.

MECHOLSKY, JR. JOHN J.

2001-09-01T23:59:59.000Z

4

Determining Relative f and d Orbital Contributions to M?Cl Covalency in MCl62 (M = Ti, Zr, Hf, U) and UOCl5 Using Cl K-Edge X-ray Absorption Spectroscopy and Time-Dependent Density Functional Theory  

SciTech Connect

Chlorine K-edge X-ray absorption spectroscopy (XAS) and ground-state and time-dependent hybrid density functional theory (DFT) were used to probe electronic structure for O{sub h}-MCl{sub 6}{sup 2-}(M = Ti, Zr, Hf, U) and C{sub 4v}-UOCl{sub 5}{sup -}, and to determine the relative contributions of valence 3d, 4d, 5d, 6d, and 5f orbitals in M-Cl bonding. Spectral interpretations were guided by time-dependent DFT calculated transition energies and oscillator strengths, which agree well with the experimental XAS spectra. The data provide new spectroscopic evidence for the involvement of both 5f and 6d orbitals in actinide-ligand bonding in UCl{sub 6}{sup 2-}. For the MCl{sub 6}{sup 2-}, where transitions into d orbitals of t{sub 2g} symmetry are spectroscopically resolved for all four complexes, the experimentally determined Cl 3p character per M-Cl bond increases from 8.3(4)% (TiCl{sub 6}{sup 2-}) to 10.3(5)% (ZrCl{sub 6}{sup 2-}), 12(1)% (HfCl{sub 6}{sup 2-}), and 26 18(1)% (UCl{sub 6}{sup 2-}). Chlorine K-edge XAS spectra of UOCl{sub 5}{sup -} provide additional insights into the transition assignments by 27 lowering the symmetry to C{sub 4v}, where five pre-edge transitions into both 5f and 6d orbitals are observed. For UCl{sub 6}{sup 2-}, the XAS data 28 suggest that orbital mixing associated with the U 5f orbitals is considerably lower than that of the U 6d orbitals. For both UCl{sub 6}{sup 2-}29 and UOCl{sub 5}{sup -}, the ground-state DFT calculations predict a larger 5f contribution to bonding than is determined experimentally. 30 These findings are discussed in the context of conventional theories of covalent bonding for d- and f-block metal complexes.

Minasian, Stefan G.; Keith, Jason M.; Batista, Enrique R.; Boland, Kevin S.; Clark, David L.; Conradson, Steven D.; Kozimor, Stosh A.; Martin, Richard L.; Schwarz, Daniel E.; Shuh, David K.; Wagner, Gregory L.; Wilkerson, Marianne P.; Wolfsberg, Laura E.; Yang, Ping

2012-03-09T23:59:59.000Z

5

Microsoft Word - Ra-15  

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

Report Report Review of the Department of Energy's Plan for Obligating Remaining Recovery Act Contract and Grant Funding OAS-RA-10-15 August 2010 Additional Information Special Report on "Review of the Department of Energy's Plan for Obligating Remaining Recovery Act Contract and Grant Funding" OAS-RA-10-15 August 6, 2010 Report OAS-RA-10-15, Review of the Department of Energy's Plan for Obligating Remaining Recovery Act Contract and Grant Funding, was issued to the Secretary and the Department's management on August 4, 2010. On August 5, 2010, the Department announced the award of the so-called "FutureGen 2.0" contract, using $1 billion of American Recovery and Reinvestment Act funding. Despite our request, specific information pertinent to this action was not provided to the Office of

6

Hf-Ir (Hafnium - Iridium)  

Science Conference Proceedings (OSTI)

Hf-Ir crystallographic data...Hf-Ir crystallographic data Phase Composition, wt% Ir Pearson symbol Space group (βHf) 0 to ~10.5 cI 2 Im m (αHf) 0 to ~1.5 hP 2 P 6 3 / mmc Hf 2 Ir ~28 to 35.0 cF 96 Fd m Hf 5 Ir 3 39.3 hP 16 P 6 3 / mcm HfIr 51.9 to 59 o ** ? HfIr 3 76 to 82 cP 4 Pm m (Ir) ~91 to 100 cF 4 Fm m...

7

/RA/  

E-Print Network (OSTI)

at your Clinton Power Station. The enclosed report documents the inspection results, which were discussed on February 13, 2009, with Mr. F. A. Kearney and other members of your staff. This inspection examined activities conducted under your license as they relate to safety and to compliance with the Commissions rules and regulations and with the conditions of your license. The inspectors reviewed selected procedures and records, observed activities, and interviewed personnel. Based on the results of this inspection, no findings of significance were identified. In accordance with 10 CFR 2.390 of the NRCs Rules of Practice, a copy of this letter and its enclosure will be made available electronically for public inspection in the NRC Public Document Room or from the Publicly Available Records (PARS) component of NRCs document system (ADAMS), accessible from the NRC Web site at http://www.nrc.gov/reading-rm/adams.html (the Public Electronic Reading Room).

Mr. Charles; G. Pardee; Robert Daley Chief; Engineering Branch

2009-01-01T23:59:59.000Z

8

Ra  

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

8, 2001 8, 2001 Office of General Counsel GC-52 U.S. Department of Energy 1000 Independence Ave., S.W. Washington, D.C. 20585 Re: AAR Comments Dear Madam or Sir: Enclosed are five copies of the comments of the Association of American Railroads in response to DOE's invitation to comment on Price-Anderson indemnification (62 Fed. Reg. 68272 (Dec. 31, 1997). Please return the extra copy of this cover letter, date-stamped, in the enclosed stamped, self-addressed envelope to indicate receipt. Thank you. Sincerely, 1 A trade association whose membership includes freight railroads that operate 77 percent of the line-haul mileage, employ 91 percent of the workers, and account for 93 percent of the freight revenue of all railroads in the United States. 2 See 62 Fed. Reg. 68272 (Dec. 31, 1997).

9

Ni-Zr (Nickel - Zirconium)  

Science Conference Proceedings (OSTI)

Ni-Zr crystallographic data...99.9 to 100 hP 2 P 6 3 / mmc (a) Triclinic. (b) Stoichiometric. (c) Zr-rich...

10

Ga-Zr (Gallium - Zirconium)  

Science Conference Proceedings (OSTI)

Ga-Zr crystallographic data...Ga 5 Zr 3 44.0 oC 32 Cmcm Ga 3 Zr 2 47 oF 40 Fdd 2 βGaZr 56.7 ? ? αGaZr 56.7 tI 16 I 4 1 / amd Ga 4 Zr 5 62.1 hP 18 P 6 3 / mcm Ga 2 Zr 3 66 tP 10 P 4/ mbm Ga 3 Zr 5 68.6 hP 16 P 6 3 / mcm GaZr 2 72.4 tI 12 I 4/ mcm (βZr) ~94 to 100 cI 2 Im m (αZr) 99.4 to 100 hP 2 P 6 3 / mmc...

11

Al-Zr (Aluminum - Zirconium)  

Science Conference Proceedings (OSTI)

Al-Zr crystallographic data...6 3 / mcm ZrAl 22.8 oC 8 Cmcm Zr 2 Al 3 31 oF 40 Fdd 2 ZrAl 2 37.2 hP 12 P 6 3 / mmc ZrAl 3 47 tI 16 I 4/ mmm (Al) 99.86 to 100 cF 4 Fm m...

12

Rapid Method for Ra-226 and Ra-228 in Water Samples  

Science Conference Proceedings (OSTI)

The measurement of radium isotopes in natural waters is important for oceanographic studies and for public health reasons. Ra-226 (1620 year half-life) is one of the most toxic of the long-lived alpha emitters present in the environment due to its long life and its tendency to concentrate in bones, which increases the internal radiation dose of individuals. The analysis of radium-226 and radium-228 in natural waters can be tedious and time-consuming. Different sample preparation methods are often required to prepare Ra-226 and Ra-228 for separate analyses. A rapid method has been developed at the Savannah River Environmental Laboratory that effectively separates both Ra-226 and Ra-228 (via Ac-228) for assay. This method uses MnO{sub 2} Resin from Eichrom Technologies (Darien, IL, USA) to preconcentrate Ra-226 and Ra-228 rapidly from water samples, along with Ba-133 tracer. DGA Resin{reg_sign} (Eichrom) and Ln-Resin{reg_sign} (Eichrom) are employed in tandem to prepare Ra-226 for assay by alpha spectrometry and to determine Ra-228 via the measurement of Ac-228 by gas proportional counting. After preconcentration, the manganese dioxide is dissolved from the resin and passed through stacked Ln-Resin-DGA Resin cartridges that remove uranium and thorium interferences and retain Ac-228 on DGA Resin. The eluate that passed through this column is evaporated, redissolved in a lower acidity and passed through Ln-Resin again to further remove interferences before performing a barium sulfate microprecipitation. The Ac-228 is stripped from the resin, collected using cerium fluoride microprecipitation and counted by gas proportional counting. By using vacuum box cartridge technology with rapid flow rates, sample preparation time is minimized.

Maxwell, Sherrod, L. III

2006-02-10T23:59:59.000Z

13

Skin Effect of Hf-Rich Melts and Some Aspects in its Usage for Hf ...  

Science Conference Proceedings (OSTI)

USAGE FOR Hf-CONTAINING. CAST NICKEL- ... of advanced gas turbines. ... were polished by metallo- graphy and then melted by tungsten inert gas(TIG).

14

OAS-RA-12-14  

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

Special Report Special Report Inquiry into the Procurement of Law Firm Services and Management of Law Firm-Disclosed Organizational Conflicts of Interest by the Department of Energy's Loan Programs Office OAS-RA-12-14 August 2012 Department of Energy Washington, DC 20585 August 28, 2012 MEMORANDUM FOR THE SECRETARY FROM: Gregory H. Friedman Inspector General SUBJECT: INFORMATION: Special Report on "Inquiry into the Procurement of Law Firm Services and Management of Law Firm-Disclosed Organizational Conflicts of Interest by the Department of Energy's Loan Programs Office" BACKGROUND The Department of Energy's Loan Programs Office was created to accelerate the domestic commercial deployment of innovative and advanced clean energy technologies by guaranteeing

15

Video Production Tips R.A. Nocera  

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

Video Production Tips Video Production Tips R.A. Nocera There are many elements that contribute to a good video. Much of the work is in pre- production: script, storyboard, props, location, rehearsal, editing. All of these should be refined and ready before production and not interfere with the shooting schedule. I suggest creating a shot schedule of which scenes you are going to film - if you're shooting some scenes indoors and some outdoors, arrange the script in terms of location. This will make production much more efficient. There are many books and online pages about video production for reference. This is the most important aspect of film: SOUND. If you have a brilliant script, good actors, and direction, it will not translate if the sound is inaudible. Here are some ways

16

Separation and Purification of Ra-228 for SRM 4339B  

Science Conference Proceedings (OSTI)

... precipitation of the 228 Ra with two successive lead nitrate crystallizations from a concentrated nitric acid solution of the thorium parent achieved ...

2012-06-27T23:59:59.000Z

17

Pu-Zr (Plutonium - Zirconium)  

Science Conference Proceedings (OSTI)

Pu-Zr crystallographic data...0 to 100 cI 2 Im m (δ?Pu) 0 to 0.76 tI 2 I 4/ mmm (δPu) 0 to 47 cF 4 Fm m (γPu) 0 to 1.1 oF 8 Fddd (βPu) 0 to 2.7 mC 34 C 2/ m (αPu) 0 to 0.57 mP 16 P 2 1 / m θ (or Pu 4 Zr) 4 to 14 tP 80 P 4/ ncc κ (or PuZr 3 ) 52 hP 3 P 6/ mmm (αZr) 71 to 100 hP 2 P 6 3 / mmm...

18

Removal of uranium from aqueous HF solutions  

DOE Patents (OSTI)

This invention is a simple and effective method for removing uranium from aqueous HF solutions containing trace quantities of the same. The method comprises contacting the solution with particulate calcium fluoride to form uranium-bearing particulates, permitting the particulates to settle, and separting the solution from the settled particulates. The CaF.sub.2 is selected to have a nitrogen surface area in a selected range and is employed in an amount providing a calcium fluoride/uranium weight ratio in a selected range. As applied to dilute HF solutions containing 120 ppm uranium, the method removes at least 92% of the uranium, without introducing contaminants to the product solution.

Pulley, Howard (West Paducah, KY); Seltzer, Steven F. (Paducah, KY)

1980-01-01T23:59:59.000Z

19

Removal of uranium from aqueous HF solutions  

Science Conference Proceedings (OSTI)

This invention is a simple and effective method for removing uranium from aqueous HF solutions containing trace quantities of the same. The method comprises contacting the solution with particulate calcium fluoride to form uranium-bearing particulates, permitting the particulates to settle, and separating the solution from the settled particulates. The CaF2 is selected to have a nitrogen surface area in a selected range and is employed in an amount providing a calcium fluoride/uranium weight ratio in a selected range. As applied to dilute HF solutions containing 120 ppm uranium, the method removes at least 92% of the uranium without introducing contaminants to the product solution.

Pulley, H.; Seltzer, S.F.

1980-11-18T23:59:59.000Z

20

Molten Salt Electrorefining of Zr-Hf Impure Metal for Nuclear ...  

Science Conference Proceedings (OSTI)

A21: First-Principles Molecular Dynamics Simulation of Chemical ... A3: Investigation on Co-combustion Kinetics of Anthracite Coal and Biomass Char by ... Lithium Redox Process for Thermochemical Water-Splitting as Energy Conversion.

Note: This page contains sample records for the topic "ra zr hf" 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

The ScaRaB Earth Radiation Budget Dataset  

Science Conference Proceedings (OSTI)

Following an overview of the scientific objectives and organization of the FrenchRussianGerman Scanner for Radiation Budget (ScaRaB) project, brief descriptions of the instrument, its ground calibration, and in-flight operating and calibration ...

R. Kandel; M. Viollier; P. Raberanto; J. Ph Duvel; L. A. Pakhomov; V. A. Golovko; A. P. Trishchenko; J. Mueller; E. Raschke; R. R. Stuhlmann; International Sca Ra B. Scientific Working Group (ISSWG)

1998-05-01T23:59:59.000Z

22

Ra Solar Systems Solutions SL | Open Energy Information  

Open Energy Info (EERE)

Ra Solar Systems Solutions SL Ra Solar Systems Solutions SL Jump to: navigation, search Name Ra Solar Systems & Solutions SL Place Madrid, Spain Zip 28033 Sector Solar Product Spanish project developer and finance arranger for large-scale solar farms; also acts as distributors for complete PV systems and components. Coordinates 40.4203°, -3.705774° 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":40.4203,"lon":-3.705774,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

23

Increased Energy Efficiency and Reduced HF Emissions with New ...  

Science Conference Proceedings (OSTI)

Presentation Title, Increased Energy Efficiency and Reduced HF Emissions with New Heat Exchanger. Author(s), Anders Kenneth Sorhuus, Geir Wedde, Ketil A.

24

RAPID DETERMINATION OF RA-226 IN ENVIRONMENTAL SAMPLES  

SciTech Connect

A new rapid method for the determination of {sup 226}Ra in environmental samples has been developed at the Savannah River Site Environmental Lab (Aiken, SC, USA) that can be used for emergency response or routine sample analyses. The need for rapid analyses in the event of a Radiological Dispersive Device or Improvised Nuclear Device event is well-known. In addition, the recent accident at Fukushima Nuclear Power Plant in March, 2011 reinforces the need to have rapid analyses for radionuclides in environmental samples in the event of a nuclear accident. {sup 226}Ra (T1/2 = 1,620 years) is one of the most toxic of the long-lived alpha-emitters present in the environment due to its long life and its tendency to concentrate in bones, which increases the internal radiation dose of individuals. The new method to determine {sup 226}Ra in environmental samples utilizes a rapid sodium hydroxide fusion method for solid samples, calcium carbonate precipitation to preconcentrate Ra, and rapid column separation steps to remove interferences. The column separation process uses cation exchange resin to remove large amounts of calcium, Sr Resin to remove barium and Ln Resin as a final purification step to remove {sup 225}Ac and potential interferences. The purified {sup 226}Ra sample test sources are prepared using barium sulfate microprecipitation in the presence of isopropanol for counting by alpha spectrometry. The method showed good chemical recoveries and effective removal of interferences. The determination of {sup 226}Ra in environmental samples can be performed in less than 16 h for vegetation, concrete, brick, soil, and air filter samples with excellent quality for emergency or routine analyses. The sample preparation work takes less than 6 h. {sup 225}Ra (T1/2 = 14.9 day) tracer is used and the {sup 225}Ra progeny {sup 217}At is used to determine chemical yield via alpha spectrometry. The rapid fusion technique is a rugged sample digestion method that ensures that any refractory radium particles are effectively digested. The preconcentration and column separation steps can also be applied to aqueous samples with good results.

Maxwell, S.

2012-01-03T23:59:59.000Z

25

On the dynamic NBTI of the HfO2 and HfSiON P-MOSFET  

Science Conference Proceedings (OSTI)

Under typical dynamic NBTI conditions (~7MV/cm, 100^oC), a progressive decrease in the recoverable component (R) of the HfO"2 p-MOSFET is observed but those of the HfSiON and SiON p-MOSFETs are found to remain constant. The decrease in the R of the HfO"2 ... Keywords: Bias-temperature instability, Hole trapping, Interface traps, Permanent degradation, Recovery

Y. Gao; D. S. Ang; A. A. Boo; Z. Q. Teo

2011-07-01T23:59:59.000Z

26

Interfacial transition regions at germanium/Hf oxide based dielectric interfaces: Qualitative differences between non-crystalline Hf Si oxynitride and nanocrystalline HfO2 gate stacks  

Science Conference Proceedings (OSTI)

The contribution from a relatively low-K SiON (K~6) interfacial transition region (ITR) between Si and transition metal high-K gate dielectrics such as nanocrystalline HfO"2 (K~20), and non-crystalline Hf Si oxynitride (K~10-12) places a significant ... Keywords: Di-vacancy defects, Ge substrates, High-K gate dielectrics, Interfacial transition regions, MOS devices, Native Ge dielectrics, Spectroscopic ellipsometry, X-ray absorption spectroscopy

G. Lucovsky; S. Lee; J. P. Long; H. Seo; J. Lning

2009-03-01T23:59:59.000Z

27

Examination Report: OAS-RA-13-01 | Department of Energy  

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

Examination Report: OAS-RA-13-01 Examination Report: OAS-RA-13-01 October 9, 2012 California Energy Commission - Energy Efficiency and Conservation Block Grant Program Funds...

28

Theoretical Assessment of 178m2Hf De-Excitation  

Science Conference Proceedings (OSTI)

This document contains a comprehensive literature review in support of the theoretical assessment of the {sup 178m2}Hf de-excitation, as well as a rigorous description of controlled energy release from an isomeric nuclear state.

Hartouni, E P; Chen, M; Descalle, M A; Escher, J E; Loshak, A; Navratil, P; Ormand, W E; Pruet, J; Thompson, I J; Wang, T F

2008-10-06T23:59:59.000Z

29

Factors Affecting the Accuracy of SHOWEX HF Radar Wave Measurements  

Science Conference Proceedings (OSTI)

Ocean Surface Current Radar (OSCR) HF radar measurements of ocean waves and currents were made during the Shoaling Waves Experiment (SHOWEX) in the fall of 1999. During some periods, at some locations, good quality wave measurements were ...

Lucy R. Wyatt; Guennadi Liakhovetski; Hans C. Graber; Brian K. Haus

2005-07-01T23:59:59.000Z

30

Spatial Averaging of HF Radar Data for Wave Measurement Applications  

Science Conference Proceedings (OSTI)

HF radar data are often collected for time periods that are optimised for current measurement applications where, in many cases, very high temporal resolution is needed. Previous work has demonstrated that this does not provide sufficient ...

Lucy R. Wyatt; Jasmine B. D. Jaffrs; Mal L. Heron

31

DENSITY-FUNCTIONAL STUDY OF Zr-BASED ACTINIDE ALLOYS: 2. U-Pu-Zr SYSTEM  

Science Conference Proceedings (OSTI)

Density-functional theory, previously used to describe phase equilibria in the U-Zr alloys [1], is applied to study ground state properties of the bcc U-Pu-Zr solid solutions. Calculated heats of formation of the Pu-U and Pu-Zr alloys are in a good agreement with CALPHAD assessments. We found that account for spin-orbit coupling is important for successful description of Pu-containing alloys.

Landa, A; Soderlind, P; Turchi, P; Vitos, L; Ruban, A

2009-02-09T23:59:59.000Z

32

Nuclear Fuels & Zr-alloy Claddings  

Science Conference Proceedings (OSTI)

Mar 7, 2013 ... Microstructural Processes in Irradiated Materials: Nuclear Fuels & Zr-alloy ... Center for Materials Science of Nuclear Fuels, an Energy Frontier Research ... However, more recently density functional theory calculations have...

33

The Advanced Research Projects, OAS-RA-11-11  

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

Audit Report Audit Report The Advanced Research Projects Agency - Energy OAS-RA-11-11 August 2011 Department of Energy Washington, DC 20585 August 22, 2011 MEMORANDUM FOR THE DIRECTOR, ADVANCED RESEARCH PROJECTS AGENCY - ENERGY FROM: George W. Collard Assistant Inspector General for Audits Office of Inspector General SUBJECT: INFORMATION: Audit Report on "The Advanced Research Projects Agency - Energy" BACKGROUND The Advanced Research Projects Agency - Energy (ARPA-E), an agency within the Department of Energy, was authorized in 2007 as part of the America COMPETES Act (COMPETES Act). The goals of ARPA-E are to enhance domestic economic security through the development of energy technologies and to ensure that the United States maintains a technological lead in

34

Concentration of 226Ra in soil and sugar cane after application of calcareous, gypsum or phosphogypsum.  

E-Print Network (OSTI)

??All kinds of soil possess 226Ra, and its absorption by the plants, depends on the specific characteristics of each region and of the cultivated species. (more)

Maria Rosely de Oliveira Breckenfeld

2007-01-01T23:59:59.000Z

35

Status of the ADMX and ADMX-HF experiments  

E-Print Network (OSTI)

The Axion Dark Matter eXperiment (ADMX) is in the midst of an upgrade to reduce its system noise temperature. ADMX-HF (High Frequency) is a second platform specifically designed for higher mass axions and will serve as an innovation test-bed. Both will be commissioning in 2013 and taking data shortly thereafter. The principle of the experiment, current experimental limits and the status of the ADMX/ADMX-HF program will be described. R&D on hybrid superconducting cavities will be discussed as one example of an innovation to greatly enhance sensitivity.

Karl van Bibber; Gianpaolo Carosi

2013-04-29T23:59:59.000Z

36

(U,Zr)N alloy having enhanced thermal stability  

DOE Patents (OSTI)

A nitrided alloy of uranium and zirconium is provided which consists of a single-phase UN structure containing a dissolved amount of Zr as ZrN, effective to inhibit dissociation of the UN phase.

Potter, Ralph A. (Lynchburg, VA); Scott, James L. (Knoxville, TN)

1977-01-01T23:59:59.000Z

37

Hf-Doped Ni-Al2O3 Interfaces at Equilibrium  

SciTech Connect

In this study, a series of dewetting experiments of pure and Hf-doped Ni films on sapphire and HfO2 substrates were conducted in order to measure the change in interface energy of the Ni-Al2O3 interface in the presence of Hf, and to study Hf interfacial segregation. It was found that Hf oxidizes under the conditions of the experiment (P(O2)=10-20atm.), and that the presence of HfO2 at the Ni-Al2O3 interface increases the interface energy from 2.16 0.2 to 2.7 0.4 [J/m2]. This result contradicts several theoretical studies that predict that Hf segregates to the interface to stabilize it thermodynamically. The solubility of Hf in bulk Ni was found to be significantly lower than the value reported in the equilibrium phase diagram.

Meltzman, Hila [Technion, Israel Institute of Technology; Besmann, Theodore M [ORNL; Kaplan, Prof. Wayne D. [Technion, Israel Institute of Technology

2012-01-01T23:59:59.000Z

38

A correlation between soil descriptions and {sup 226}Ra concentrations in Florida soils  

Science Conference Proceedings (OSTI)

The soil radium content in Florida is highly variable. The range in radium concentrations, where the samples involved in this study are concerned, is from 0.1 pCi/g to 18.5 pCi/g. Low {sup 226}Ra concentrations (0.1 to 5 pCi/g) are evidenced in sands, moderate concentrations (5 to 11 pCi/g) are found in silt and gravel, and high {sup 226}Ra concentrations (>11 pCi/g) are found in soil horizons with shell, clay, and strata with phosphate. Strata containing phosphate yields a high concentration of {sup 226}Ra. The information obtained in this study, soil descriptions with their corresponding {sup 226}Ra concentrations, comes from geological cores drilled by geotechnical consultants with gamma spectrometry analysis performed by high resolution gamma spectroscopy. Concentration; of {sup 226}Ra generally increase with depth. These cores are usually terminated at 20 feet deep, with some cores being shallower than this due to hitting bedrock or encountering the water table. These frequency distributions give the core-logging geologist an approximate concentration of {sup 226}Ra based on the description of the soil. Since the correlation of {sup 226}Ra and soil descriptions can be used as a tool in assigning indoor radon potential, this study is of importance to land managers, contractors, developers, and regulating agencies who are attempting to place standards on tracts of land with {sup 226}Ra concentration used as a criterion.

Harrison, D.P.

1992-12-31T23:59:59.000Z

39

Effect of Al addition on the microstructure and electronic structure of HfO2 film  

E-Print Network (OSTI)

Effect of Al addition on the microstructure and electronic structure of HfO2 film X. F. Wang investigated the microstructures and electronic structures of a series of hafnium aluminate HfAlO films with Al concentration ranging from 0% to 100%. When the films evolve from pure HfO2 to pure Al2O3 by increasing

Gong, Xingao

40

High sensitivity measurement of 224Ra and 226Ra in water with an improved hydrous titanium oxide technique at the Sudbury Neutrino Observatory  

E-Print Network (OSTI)

The existing hydrous titanium oxide (HTiO) technique for the measurement of 224Ra and 226Ra in the water at the Sudbury Neutrino Observatory (SNO) has been changed to make it faster and less sensitive to trace impurities in the HTiO eluate. Using HTiO-loaded filters followed by cation exchange adsorption and HTiO co-precipitation, Ra isotopes from 200-450 tonnes of heavy water can be extracted and concentrated into a single sample of a few millilitres with a total chemical efficiency of 50%. Combined with beta-alpha coincidence counting, this method is capable of measuring 2.0x10^3 uBq/kg of 224Ra and 3.7x10^3 uBq/kg of 226Ra from the 232Th and 238U decay chains, respectively, for a 275 tonne D2O assay, which are equivalent to 5x10^16 g Th/g and 3x10^16 g U/g in heavy water.

B. Aharmim; B. T. Cleveland; X. Dai; G. Doucas; J. Farine; H. Fergani; R. Ford; R. L. Hahn; E. D. Hallman; N. A. Jelley; R. Lange; S. Majerus; C. Mifflin; A. J. Noble; H. M. O'Keeffe; R. Rodriguez-Jimenez; D. Sinclair; M. Yeh

2008-03-28T23:59:59.000Z

Note: This page contains sample records for the topic "ra zr hf" 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

Growth, microstructure and electrical properties of sputter-deposited hafnium oxide (HfO2) thin films grown using HfO2 ceramic target  

Science Conference Proceedings (OSTI)

Hafnium oxide (HfO?) thin films have been made by radio-frequency (rf) magnetron-sputtering onto Si(100) substrates under varying growth temperature (Ts). HfO? ceramic target has been employed for sputtering while varying the Ts from room temperature to 500?C during deposition. The effect of Ts on the growth and microstructure of deposited HfO? films has been studied using grazing incidence x-ray diffraction (GIXRD), X-ray photoelectron spectroscopy (XPS), and high-resolution scanning electron microscopy (HR-SEM) coupled with energy dispersive x-ray spectrometry (EDS). The results indicate that the effect of Ts is significant on the growth, surface and interface structure, morphology and chemical composition of the HfO? films. Structural characterization indicates that the HfO? films grown at Ts200 ?C are nanocrystalline. An amorphous-to-crystalline transition occurs at Ts=200 ?C. Nanocrystalline HfO? films crystallized in a monoclinic structure with a (-111) orientation. XPS measurements indicated the high surface-chemical quality and stoichiometric nature of the grown HfO? films. An interface layer (IL) formation occurs due to reaction at the HfO?-Si interface for HfO? films deposited at Ts>200 ?C. The thickness of IL increases with increasing Ts. XPS and EDS at the HfO?-Si cross-section indicate the IL is a (Hf, Si)-O compound. The electrical characterization using capacitance-voltage measurements indicate that the dielectric constant decreases from 25 to 16 with increasing Ts.

Aguirre, B.; Vemuri, R. S.; Zubia, David; Engelhard, Mark H.; Shutthanandan, V.; Kamala Bharathi, K.; Ramana, Chintalapalle V.

2011-01-01T23:59:59.000Z

42

Examination Report: OAS-RA-13-03 | Department of Energy  

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

Examination Report: OAS-RA-13-03 » Examination Report: Examination Report: OAS-RA-13-03 » Examination Report: OAS-RA-13-03 Examination Report: OAS-RA-13-03 October 17, 2012 Community Action Partnership of Orange County - Weatherization Assistance Program Funds Provided by the American Recovery and Reinvestment Act of 2009 As part of the American Recovery and Reinvestment Act of 2009 (Recovery Act), the Weatherization Assistance Program (Weatherization Program) received $5 billion to reduce energy consumption for low-income households through energy efficient upgrades. The State of California received $186 million in Recovery Act Weatherization Program funding, of which $7.3 million was allocated to the Community Action Partnership of Orange County (Agency) to weatherize 2,342 homes. The State of California Department of

43

Examination Report: OAS-RA-13-13 | Department of Energy  

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

3 Examination Report: OAS-RA-13-13 February 21, 2013 Texas State Energy Conservation Office Energy Efficiency and Conservation Block Grant Program Funds Provided by the American...

44

Microsoft Word - A10RA007 Report Cover 3-3-11  

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

Recovery Act Funded Projects at the SLAC National Accelerator Laboratory OAS-RA-L-11-05 March 2011 DOE F 1325.8 (08-93) United States Government Department of Energy Memorandum...

45

Microsoft Word - A10RA010 Report Cover 12-6-10  

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

Audit of Environmental Cleanup Projects Funded by the Recovery Act at the Y-12 National Security Complex OAS-RA-L-11-02 December 2010 DOE F 1325.8 (08-93) United States Government...

46

Special Report: OAS-RA-10-15 | Department of Energy  

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

Special Report: OAS-RA-10-15 Special Report: OAS-RA-10-15 Special Report: OAS-RA-10-15 August 4, 2010 Review of the Department of Energy's Plan for Obligating Remaining Recovery Act Contract and Grant Funding Report OAS-RA-10-15, Review of the Department of Energy's Plan for Obligating Remaining Recovery Act Contract and Grant Funding, was issued to the Secretary and the Department's management on August 4, 2010. On August 5, 2010, the Department announced the award of the so-called "FutureGen 2.0" contract, using $1 billion of American Recovery and Reinvestment Act funding. Despite our request, specific information pertinent to this action was not provided to the Office of Inspector General prior to release of the audit report. These circumstances are described on page 4 of the report in

47

A thermodynamic description of the Mg-Sm-Zr system  

Science Conference Proceedings (OSTI)

Combining with the thermodynamic parameters of the Sm-Zr binary systems cited from ... phase equilibria are in good agreement with the experimental data.

48

Effect of Thermal Oxidation on the Surface Characteristics of Zr ...  

Science Conference Proceedings (OSTI)

Presentation Title, Effect of Thermal Oxidation on the Surface Characteristics of Zr -based Bulk Metallic Glasses. Author(s), Ka Ram Lim, Won Tae Kim, Do Hyang...

49

3D surface topography study of the biofunctionalized nanocrystalline Ti-6Zr-4Nb/Ca-P  

Science Conference Proceedings (OSTI)

In this work surface of the sintered Ti-6Zr-4Nb nanocrystalline alloy was electrochemically biofunctionalized. The porous surface was produced by anodic oxidation in 1 M H{sub 3}PO{sub 4} + 2%HF electrolyte at 10 V for 30 min. Next the calcium-phosphate (Ca-P) layer was deposited, onto the formed porous surface, using cathodic potential - 5 V kept for 60 min in 0.042 M Ca(NO{sub 3}){sub 2} + 0.025 M (NH{sub 4}){sub 2}HPO{sub 4} + 0.1 M HCl electrolyte. The deposited Ca-P layer anchored in the pores. The biofunctionalized surface was studied by XRD, SEM and EDS. In vitro tests culture of normal human osteoblast (NHOst) cells showed very good cells proliferation, colonization and multilayering. Using optical profiler, roughness and hybrid 3D surface topography parameters were estimated. Correlation between surface composition, morphology, roughness and biocompatibility results was done. It has been shown by us that surface with appropriate chemical composition and topography, after combined electrochemical anodic and cathodic surface treatment, supports osteoblast adhesion and proliferation. 3D topography measurements using optical profiler play a key role in the biomaterials surface analysis. - Highlights: Black-Right-Pointing-Pointer Nanocrystalline Ti-6Zr-4Nb/Ca-P material was produced for hard tissue implant applications. Black-Right-Pointing-Pointer Calcium-phosphate results in surface biofunctionalization. Black-Right-Pointing-Pointer The biofunctionalized surface shows good in-vitro behavior.

Jakubowicz, J., E-mail: jaroslaw.jakubowicz@put.poznan.pl [Poznan University of Technology, Institute of Materials Science and Engineering, M. Sklodowska-Curie 5 Sq., 60-965 Poznan (Poland); Adamek, G. [Poznan University of Technology, Institute of Materials Science and Engineering, M. Sklodowska-Curie 5 Sq., 60-965 Poznan (Poland); Jurczyk, M.U. [Poznan University of Medical Sciences, Mothers and Childs Health Division, Polna 33, 60-535 Poznan (Poland); Jurczyk, M. [Poznan University of Technology, Institute of Materials Science and Engineering, M. Sklodowska-Curie 5 Sq., 60-965 Poznan (Poland)

2012-08-15T23:59:59.000Z

50

Interfacial Energy Transfer during Gamma Radiolysis of Water on the Surface of ZrO2 and Some Other Oxides  

SciTech Connect

Effect of oxide interface on 60Co gamma radiolysis of water molecules was studied. Based on the molecular hydrogen yield when compared with that from the radiolysis of pure gas-phase water, all tested oxides can be classified into three groups: (i) inhibitors - MnO2, Co3O4, CuO and Fe2O3; (ii) oxides with H2 yields, which are similar to or slightly greater than radiolysis of pure gas-phase water - MgO, CaO, SrO, BaO, ZnO, CdO, Cu2O, NiO, Cr2O3, Al2O3, CeO2, SiO2, TiO2, Nb2O5 and WO3; (iii) promoters - Ga2O3, Y2O3, La2O3, Nd2O3, Sm2O3, Eu2O3, Gd2O3, Yb2O3, Er2O3, HfO2, and ZrO2. H2O radiolysis enhancement for ZrO2 and other promoters is result of effective energy transfer at the oxide/water interface, presumably due to migration of excitons to the surface and their resonant coupling with the H2O adsorption complex. Plot''effective H2 yield vs. band-gap (Eg) energy'' shows a maximum near 5 eV.

Petrik, Nikolay G. (BATTELLE (PACIFIC NW LAB)); Alexandrov, Alexandr B. (ASSOC WESTERN UNIVERSITY); Vall, Andrey I. (Institute of Technology)

2000-12-01T23:59:59.000Z

51

Defects and instabilities in Hf-dielectric/SiON stacks (Invited Paper)  

Science Conference Proceedings (OSTI)

In this work, a review on the recent progress in understanding defects and instabilities in Hf-dielectric/SiON stacks will be given for both nMOSFETs and pMOSFETs. The key issues addressed for nMOSFETs include the capture cross section of electron traps, ... Keywords: Defects, Hf-silicates, HfO2, High-k dielectrics, Instability, NBTI, PBTI, Positive charges, Traps

J. F. Zhang

2009-07-01T23:59:59.000Z

52

Shape Memory Response of NiTiHfPd High Strength and High ...  

Science Conference Proceedings (OSTI)

In this study, shape memory and superelastic properties of NiTiHfPd polycrystalline and single crystalline SMAs as functions of aging temperature and time were...

53

Development of Continuous SiC Fiber Reinforced HfB 2  

Science Conference Proceedings (OSTI)

Symposium, Ceramic Matrix Composites. Presentation Title, Development of Continuous SiC Fiber Reinforced HfB2-SiC Composites for Aerospace Applications.

54

Interdiffusion between Zr Diffusion Barrier and U-Mo Alloy  

Science Conference Proceedings (OSTI)

U-Mo alloys are being developed as low enrichment uranium fuels under the Reduced Enrichment for Research and Test Reactor (RERTR) program. Significant reactions have been observed between U-Mo fuels and Al or Al alloy matrix. Refractory metal Zr has been proposed as barrier material to reduce the interactions. In order to investigate the compatibility and barrier effects between U-Mo alloy and Zr, solid-to-solid U-10wt.%Mo vs. Zr diffusion couples were assembled and annealed at 600, 700, 800, 900 and 1000 C for various times. The microstructures and concentration profiles due to interdiffusion and reactions were examined via scanning electron microscopy and electron probe microanalysis, respectively. Intermetallic phase Mo2Zr was found at the interface and its population increased when annealing temperature decreased. Diffusion paths were also plotted on the U-Mo-Zr ternary phase diagrams with good consistency. The growth rate of interdiffusion zone between U-10wt.%Mo and Zr was also calculated under the assumption of parabolic diffusion, and was determined to be about 103 times lower than the growth rate of diffusional interaction layer found in diffusion couples U-10wt.%Mo vs. Al or Al-Si alloy. Other desirable physical properties of Zr as barrier material, such as neutron adsorption rate, melting point and thermal conductivity are presented as supplementary information to demonstrate the great potential of Zr as the diffusion barrier for U-Mo fuel systems in RERTR.

K. Huang; Y. Park; Y. H. Sohn

2012-12-01T23:59:59.000Z

55

Synthesis and structural investigation of the compounds containing HF{sub 2}{sup -} anions: Ca(HF{sub 2}){sub 2}, Ba{sub 4}F{sub 4}(HF{sub 2})(PF{sub 6}){sub 3} and Pb{sub 2}F{sub 2}(HF{sub 2})(PF{sub 6})  

SciTech Connect

Three new compounds Ca(HF{sub 2}){sub 2}, Ba{sub 4}F{sub 4}(HF{sub 2})(PF{sub 6}){sub 3} and Pb{sub 2}F{sub 2}(HF{sub 2})(PF{sub 6}) were obtained in the system metal(II) fluoride and anhydrous HF (aHF) acidified with excessive PF{sub 5}. The obtained polymeric solids are slightly soluble in aHF and they crystallize out of their aHF solutions. Ca(HF{sub 2}){sub 2} was prepared by simply dissolving CaF{sub 2} in a neutral aHF. It represents the second known compound with homoleptic HF environment of the central atom besides Ba(H{sub 3}F{sub 4}){sub 2}. The compounds Ba{sub 4}F{sub 4}(HF{sub 2})(PF{sub 6}){sub 3} and Pb{sub 2}F{sub 2}(HF{sub 2})(PF{sub 6}) represent two additional examples of the formation of a polymeric zigzag ladder or ribbon composed of metal cation and fluoride anion (MF{sup +}){sub n} besides PbF(AsF{sub 6}), the first isolated compound with such zigzag ladder. The obtained new compounds were characterized by X-ray single crystal diffraction method and partly by Raman spectroscopy. Ba{sub 4}F{sub 4}(HF{sub 2})(PF{sub 6}){sub 3} crystallizes in a triclinic space group P1-bar with a=4.5870(2) A, b=8.8327(3) A, c=11.2489(3) A, {alpha}=67.758(9){sup o}, {beta}=84.722(12), {gamma}=78.283(12){sup o}, V=413.00(3) A{sup 3} at 200 K, Z=1 and R=0.0588. Pb{sub 2}F{sub 2}(HF{sub 2})(PF{sub 6}) at 200 K: space group P1-bar , a=4.5722(19) A, b=4.763(2) A, c=8.818(4) A, {alpha}=86.967(10){sup o}, {beta}=76.774(10){sup o}, {gamma}=83.230(12){sup o}, V=185.55(14) A{sup 3}, Z=1 and R=0.0937. Pb{sub 2}F{sub 2}(HF{sub 2})(PF{sub 6}) at 293 K: space group P1-bar, a=4.586(2) A, b=4.781(3) A, c=8.831(5) A, {alpha}=87.106(13){sup o}, {beta}=76.830(13){sup o}, {gamma}=83.531(11){sup o}, V=187.27(18) A{sup 3}, Z=1 and R=0.072. Ca(HF{sub 2}){sub 2} crystallizes in an orthorhombic Fddd space group with a=5.5709(6) A, b=10.1111(9) A, c=10.5945(10) A, V=596.77(10) A{sup 3} at 200 K, Z=8 and R=0.028. - Graphical abstract: Three new compounds Ca(HF{sub 2}){sub 2}, Ba{sub 4}F{sub 4}(HF{sub 2})(PF{sub 6}){sub 3} and Pb{sub 2}F{sub 2}(HF{sub 2})(PF{sub 6}) were obtained in the system metal(II) fluoride and anhydrous HF acidified with excessive PF{sub 5} and characterized by X-ray single crystal diffraction method and partly by Raman spectroscopy. Ca(HF{sub 2}){sub 2} represents the second known compound with homoleptic HF{sub 2}{sup -} environment of the central atom. Display Omitted.

Bunic, Tina; Tramsek, Melita [Department of Inorganic Chemistry and Technology, Jozef Stefan Institute, Jamova 39, SI-1000 Ljubljana (Slovenia); Goreshnik, Evgeny [Department of Inorganic Chemistry and Technology, Jozef Stefan Institute, Jamova 39, SI-1000 Ljubljana (Slovenia)], E-mail: evgeny.goreshnik@ijs.si; Zemva, Boris [Department of Inorganic Chemistry and Technology, Jozef Stefan Institute, Jamova 39, SI-1000 Ljubljana (Slovenia)], E-mail: boris.zemva@ijs.si

2008-09-15T23:59:59.000Z

56

Chemistry of H2O and HF Under Extreme Conditions  

DOE Green Energy (OSTI)

The predicted high pressure superionic phases of water and HF are investigated via ab initio molecular dynamics. These phases could potentially be achieved through either static compression with heating or through shock compression. We study water at densities of 2.0-3.0 g/cc (34-115 GPa) along the 2000K isotherm.We find that extremely rapid (superionic) diffusion of protons occurs in a fluid phase at pressures between 34 and 58 GPa. A transition to a stable body-centered cubic (bcc) O lattice with superionic proton conductivity is observed between 70 and 75 GPa, a much higher pressure than suggested in prior work. We find that all molecular species at pressures greater than 75 GPa are too short lived to be classified as bound states. Up to 95 GPa, we find a solid superionic phase characterized by covalent O-H bonding. Above 95 GPa, a transient network phase is found characterized by symmetric O-H hydrogen bonding with nearly 50% covalent character. Ab initio molecular dynamics simulations of HF were conducted at densities of 1.8-4.0 g/cc along the 900 K isotherm. According to our simulations, a unique form of (symmetric) hydrogen bonding could play a significant role in superionic conduction. Our work shows that superionic phases could be more prevalent in hydrogen bonded systems than previously thought, such as HCl and HBr.

Fried, L; Goldman, N; Kuo, I W; Mundy, C

2005-11-28T23:59:59.000Z

57

The mechanism of HF formation in LiPF6 based organic carbonate electrolytes  

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

The mechanism of HF formation in LiPF6 based organic carbonate electrolytes The mechanism of HF formation in LiPF6 based organic carbonate electrolytes Title The mechanism of HF formation in LiPF6 based organic carbonate electrolytes Publication Type Journal Article Year of Publication 2012 Authors Lux, Simon F., Ivan T. Lucas, Elad Pollak, Stefano Passerini, Martin Winter, and Robert Kostecki Journal Electrochemistry Communications Volume 14 Start Page 47 Issue 1 Pagination 47-50 Date Published 01/2012 Keywords Hydrofluoric acid, LiPF6 degradation, Lithium ion batteries, spectroscopic ellipsometry Abstract Spectroscopic ellipsometry was used to study the time-dependent formation of HF upon the thermal degradation of LiPF6 at 50 °C in a lithium ion battery electrolyte containing ethylene carbonate and diethyl carbonate. The generated HF was monitored by following the etching rate of a 300 nm thick SiO2 layer, grown on both sides of a silicon wafer substrate, as a function of the immersion time in the electrolyte at 50 °C. It was found that the formation of HF starts after 70 h of exposure time and occurs following several different phases. The amount of generated HF was calculated using an empirical formula correlating the etching rate to the temperature. Combining the results of the HF formation with literature data, a simplified mechanism for the formation of the HF involving LiPF6 degradation, and a simplified catalytical reaction pathway of the formed HF and silicon dioxide are proposed to describe the kinetics of HF formation.

58

Audit Report: OAS-RA-13-22 | Department of Energy  

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

Audit Report: OAS-RA-13-22 Audit Report: OAS-RA-13-22 Audit Report: OAS-RA-13-22 June 6, 2013 The Hydrogen Energy California Project Under the American Recovery and Reinvestment Act of 2009, the Department of Energy's (Department) Office of Fossil Energy received $3.4 billion to focus on the research, development and deployment of technologies to use coal more cleanly and efficiently. In September 2009, the Department approved a cooperative agreement award with a Government contribution of $308 million to Hydrogen Energy California, LLC (HECA) to construct a commercial power plant to demonstrate the capture and underground storage of carbon dioxide. The project was expected to be completed in November 2018, at a total cost of about $2.8 billion. In March 2011, after the Department and HECA spent approximately $75

59

Special Report: OAS-RA-09-01 | Department of Energy  

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

Special Report: OAS-RA-09-01 Special Report: OAS-RA-09-01 Special Report: OAS-RA-09-01 March 20, 2009 Special Report on "The American Recovery and Reinvestment Act at the Department of Energy The American Recovery and Reinvestment Act of 2009 (Recovery Act) was signed into law on February 17, 2009, as a way to jumpstart the U.S. economy, create or save millions of jobs, spur technological advances in science and health,and invest in the Nation's energy future. This national effort will require an unprecedented level of transparency and accountability to ensure that U.S. citizens know where their taxdollars are going and how they are being spent. As part of the Recovery Act, the Department of Energy will receive more than $38 billion to support a number of science, energy, and environmental initiatives. Additionally, the

60

Special Review: OAS-RA-13-20 | Department of Energy  

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

Special Review: OAS-RA-13-20 Special Review: OAS-RA-13-20 Special Review: OAS-RA-13-20 May 13, 2013 Cost Incentives for the Department's Cleanup Contract in Idaho In Fiscal Year 2005, the Department of Energy (Department) awarded a Cost-Plus-Incentive-Fee contract to CH2M ♦ WG Idaho, LLC (CWI) to lead environmental cleanup of its Idaho National Laboratory site. The contract originally ran from May 1, 2005 through September 30, 2012, and has been extended for 3 years to September 30, 2015. The contract had a target cost of $2.7 billion and a target fee of $196 million (7.36 percent of target cost). The contract includes an additional incentive if work is completed under target cost. In addition to the target work to be completed within the contract, additional non-target work was allowed under Section

Note: This page contains sample records for the topic "ra zr hf" 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

Audit Report: OAS-RA-13-22 | Department of Energy  

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

Audit Report: OAS-RA-13-22 Audit Report: OAS-RA-13-22 Audit Report: OAS-RA-13-22 June 6, 2013 The Hydrogen Energy California Project Under the American Recovery and Reinvestment Act of 2009, the Department of Energy's (Department) Office of Fossil Energy received $3.4 billion to focus on the research, development and deployment of technologies to use coal more cleanly and efficiently. In September 2009, the Department approved a cooperative agreement award with a Government contribution of $308 million to Hydrogen Energy California, LLC (HECA) to construct a commercial power plant to demonstrate the capture and underground storage of carbon dioxide. The project was expected to be completed in November 2018, at a total cost of about $2.8 billion. In March 2011, after the Department and HECA spent approximately $75

62

Inspection Report: INS-RA-L-12-01 | Department of Energy  

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

RA-L-12-01 RA-L-12-01 Inspection Report: INS-RA-L-12-01 December 16, 2011 Waste Disposal and Recovery Act Efforts at the Oak Ridge Reservation The Department of Energy (Department) expends billions of dollars to clean up contaminated sites and dispose of hazardous waste. The Department's Oak Ridge Office (ORO) is responsible for processing and disposing of the Transuranic (TRU) waste on the Oak Ridge Reservation (ORR), including approximately 3,500 cubic meters of legacy remote-handled (RH) and contact-handled (CH) TRU waste from more than 50 years of energy research and weapons production. The ORR was selected to receive $755 million in American Recovery and Reinvestment Act of 2009 (Recovery Act) funds, of which $143.5 million was allocated for the Transuranic Waste Processing

63

Audit Report: OAS-RA-L-13-03 | Department of Energy  

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

Audit Report: OAS-RA-L-13-03 Audit Report: OAS-RA-L-13-03 Audit Report: OAS-RA-L-13-03 February 28, 2013 The Department of Energy's Solid-State Lighting Program The Department of Energy's (Department) Office of Energy Efficiency and Renewable Energy established the Solid-State Lighting Program to advance the development and market introduction of energy-efficient white-light sources for general illumination. The American Recovery and Reinvestment Act of 2009 appropriated more than $41 million to accelerate solid-state lighting research and development and jumpstart the manufacturing research and development initiative. Through competitive solicitations, the Department awarded financial assistance instruments to various recipients each year since the program's inception. The audit determined that the

64

Examination Report: OAS-RA-13-30 | Department of Energy  

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

Examination Report: OAS-RA-13-30 Examination Report: OAS-RA-13-30 Examination Report: OAS-RA-13-30 September 19, 2013 Alamo Area Council of Governments - Weatherization Assistance Program Funds Provided by the American Recovery and Reinvestment Act of 2009 As part of the American Recovery and Reinvestment Act of 2009 (Recovery Act), the Weatherization Assistance Program (Weatherization Program) received $5 billion to reduce energy consumption for low-income households through energy efficient upgrades. The State of Texas received $327 million in Weatherization Program Recovery Act grant funding, of which $15.5 million was allocated to the Alamo Area Council of Governments (Alamo) to weatherize approximately 3,000 homes. The State of Texas' Department of Housing and Community Affairs was responsible for

65

Examination Report: OAS-RA-13-30 | Department of Energy  

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

Examination Report: OAS-RA-13-30 Examination Report: OAS-RA-13-30 Examination Report: OAS-RA-13-30 September 19, 2013 Alamo Area Council of Governments - Weatherization Assistance Program Funds Provided by the American Recovery and Reinvestment Act of 2009 As part of the American Recovery and Reinvestment Act of 2009 (Recovery Act), the Weatherization Assistance Program (Weatherization Program) received $5 billion to reduce energy consumption for low-income households through energy efficient upgrades. The State of Texas received $327 million in Weatherization Program Recovery Act grant funding, of which $15.5 million was allocated to the Alamo Area Council of Governments (Alamo) to weatherize approximately 3,000 homes. The State of Texas' Department of Housing and Community Affairs was responsible for

66

Special Report: OAS-RA-10-04 | Department of Energy  

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

OAS-RA-10-04 OAS-RA-10-04 Special Report: OAS-RA-10-04 February 19, 2010 Progress in Implementing the Department of Energy's Weatherization Assistance Program Under the American Recovery and Reinvestment Act The American Recovery and Reinvestment Act of 2009 (Recovery Act) was enacted to stimulate the U.S. economy, create jobs and make infrastructure investments in energy and other areas. The Department of Energy's (Department) Weatherization Assistance Program received about $5 billion under the Recovery Act to improve the energy efficiency of nearly 590,000 residences of low income citizens -- a dramatic increase over the $450 million appropriated for this Program in Fiscal Year 2009. The Department awarded $4.73 billion of the Recovery Act funding in the form of grants to

67

Audit Special Report: OAS-RA-10-03 | Department of Energy  

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

OAS-RA-10-03 OAS-RA-10-03 Audit Special Report: OAS-RA-10-03 December 7, 2009 Selected Department of Energy Program Efforts to Implement the American Recovery and Reinvestment Act The American Recovery and Reinvestment Act of 2009 (Recovery Act) was enacted on February 17, 2009, to jumpstart the economy by creating or saving millions of jobs, spurring technological advances in health and science, and investing in the Nation's energy future. The Department of Energy received over $32.7 billion in Recovery Act funding for various science, energy, and environmental programs and initiatives. As of November 2009, the Department had obligated $18.3 billion of the Recovery Act funding, but only $1.4 billion had been spent. The Department's Offices of Energy Efficiency and Renewable Energy, Fossil Energy, Environmental

68

Special Review: OAS-RA-13-20 | Department of Energy  

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

Special Review: OAS-RA-13-20 Special Review: OAS-RA-13-20 Special Review: OAS-RA-13-20 May 13, 2013 Cost Incentives for the Department's Cleanup Contract in Idaho In Fiscal Year 2005, the Department of Energy (Department) awarded a Cost-Plus-Incentive-Fee contract to CH2M ♦ WG Idaho, LLC (CWI) to lead environmental cleanup of its Idaho National Laboratory site. The contract originally ran from May 1, 2005 through September 30, 2012, and has been extended for 3 years to September 30, 2015. The contract had a target cost of $2.7 billion and a target fee of $196 million (7.36 percent of target cost). The contract includes an additional incentive if work is completed under target cost. In addition to the target work to be completed within the contract, additional non-target work was allowed under Section

69

Inspection Report: INS-RA-L-12-01 | Department of Energy  

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

Inspection Report: INS-RA-L-12-01 Inspection Report: INS-RA-L-12-01 Inspection Report: INS-RA-L-12-01 December 16, 2011 Waste Disposal and Recovery Act Efforts at the Oak Ridge Reservation The Department of Energy (Department) expends billions of dollars to clean up contaminated sites and dispose of hazardous waste. The Department's Oak Ridge Office (ORO) is responsible for processing and disposing of the Transuranic (TRU) waste on the Oak Ridge Reservation (ORR), including approximately 3,500 cubic meters of legacy remote-handled (RH) and contact-handled (CH) TRU waste from more than 50 years of energy research and weapons production. The ORR was selected to receive $755 million in American Recovery and Reinvestment Act of 2009 (Recovery Act) funds, of which $143.5 million was allocated for the Transuranic Waste Processing

70

Special Report: IG-RA-09-02 | Department of Energy  

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

Special Report: IG-RA-09-02 Special Report: IG-RA-09-02 Special Report: IG-RA-09-02 March 30, 2009 The Department of Energy's Acquisition Workforce and its Impact on Implementation of the American Recovery and Reinvestment Act of 2009 Signed by the President on February 17, 2009, the American Recovery and Reinvestment Act of 2009 (Recovery Act) seeks to strengthen the U.S. economy through the creation of new jobs, aiding State and local governments with budget shortfalls, and investing in the long-term health of the Nation's economic prosperity. Under the Recovery Act, the Department of Energy will receive approximately $40 billion for various energy, environmental, and science programs and initiatives. To have an immediate stimulative impact on the U.S. economy, the Department's stated goal is to

71

Audit Report: OAS-RA-11-13 | Department of Energy  

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

Audit Report: OAS-RA-11-13 Audit Report: OAS-RA-11-13 Audit Report: OAS-RA-11-13 August 23, 2011 The Department of Energy's Weatherization Assistance Program Funded under the American Recovery and Reinvestment Act in the State of Indiana Our review did not reveal material problems with the State of Indiana's management of the Weatherization Program and the three local agencies we visited - Hoosier Energy Rural Electric Cooperative, REAL Services, Inc., and Indiana Builders Association (IBA). We did, however, identify opportunities for the State and IBA to improve the efficiency and effectiveness of their Weatherization Programs. Specifically, we found that IBA had not always maintained documentation to support weatherization material costs reimbursed by the State, even though it was specifically

72

Examination Report: OAS-RA-11-18 | Department of Energy  

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

Examination Report: OAS-RA-11-18 Examination Report: OAS-RA-11-18 Examination Report: OAS-RA-11-18 September 29, 2011 Community Action Partnership of the Greater Dayton Area - Weatherization Assistance Program Funds Provided by the American Recovery and Reinvestment Act of 2009 Under the American Recovery and Reinvestment Act of 2009 (Recovery Act), the Department of Energy's (Department) Weatherization Assistance Program (Weatherization Program) received $5 billion to increase the energy efficiency of dwellings owned or occupied by low-income persons. Subsequently, the Department awarded a 3-year, $267 million Recovery Act weatherization grant to the State of Ohio's Department of Development. The State of Ohio allocated about $18 million of its grant to the Community Action Partnership of the Greater Dayton Area (Dayton) to weatherize 2,144

73

Audit Report: OAS-RA-L-11-11 | Department of Energy  

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

OAS-RA-L-11-11 OAS-RA-L-11-11 Audit Report: OAS-RA-L-11-11 September 23, 2011 The Department of Energy's Energy Efficiency and Conservation Block Grant Program Funded under the American Recovery and Reinvestment Act for the State of Pennsylvania Under the American Recovery and Reinvestment Act of 2009 (Recovery Act), the Department of Energy's (Department) Energy Efficiency and Conservation Block Grant Program (Program) received $3.2 billion in funding to help U.S. cities, counties and states to develop, promote, implement and manage energy efficiency and conservation projects. Subsequently, the Department awarded a $23.6 million formula grant to the State of Pennsylvania's (State) Department of Environmental Protection (DEP). Of the $23.6 million awarded, the State retained about $1.2 million in funding for

74

Special Report: IG-RA-09-02 | Department of Energy  

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

RA-09-02 RA-09-02 Special Report: IG-RA-09-02 March 30, 2009 The Department of Energy's Acquisition Workforce and its Impact on Implementation of the American Recovery and Reinvestment Act of 2009 Signed by the President on February 17, 2009, the American Recovery and Reinvestment Act of 2009 (Recovery Act) seeks to strengthen the U.S. economy through the creation of new jobs, aiding State and local governments with budget shortfalls, and investing in the long-term health of the Nation's economic prosperity. Under the Recovery Act, the Department of Energy will receive approximately $40 billion for various energy, environmental, and science programs and initiatives. To have an immediate stimulative impact on the U.S. economy, the Department's stated goal is to ensure that these funds are spent as expeditiously as possible, without

75

Audit Letter Report: OAS-RA-L-10-01 | Department of Energy  

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

Letter Report: OAS-RA-L-10-01 Letter Report: OAS-RA-L-10-01 Audit Letter Report: OAS-RA-L-10-01 April 6, 2010 The Department of Energy's Management of the NSLS-II Project The Department of Energy's (Department) Office of Science is currently constructing the National Synchrotron Light Source II (NSLS-II) at Brookhaven National Laboratory (Brookhaven) in Upton, New York. The NSLS-II is designed to replace the existing National Synchrotron Light Source (NSLS), which began operations in 1982. Approximately 2,100 researchers utilize the NSLS each year for research in such areas as biology and medicine, chemistry and environmental sciences, physics, and materials science. Construction of the NSLS-II began in Fiscal Year (FY) 2009 and the facility is scheduled to begin operations in FY 2015.

76

Investigative Report: INV-RA-11-01 | Department of Energy  

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

Investigative Report: INV-RA-11-01 Investigative Report: INV-RA-11-01 Investigative Report: INV-RA-11-01 December 3, 2010 Management Alert on the State Energy Efficient Appliance Rebate Program The purpose of this management alert is to convey concerns regarding state-level implementation of the Department of Energy's State Energy Efficient Appliance Rebate Program (Rebate Program), which promotes the purchase of ENERGY STAR® qualified appliances. The Office of Inspector General (OIG) recently received an allegation concerning potential abuse of the program in the State of Georgia. Our investigation confirmed that an individual purchased multiple hot water heaters and returned them to the store, yet applied for and inappropriately received rebates under the Rebate Program. While we cannot confirm whether or not this was an isolated

77

Interfacial and structural properties of sputtered HfO{sub 2} layers  

SciTech Connect

Magnetron sputtered HfO{sub 2} layers formed on a heated Si substrate were studied by spectroscopic ellipsometer (SE), x-ray diffraction (XRD), Fourier transform infrared (FTIR), and x-ray photoelectron spectroscopy (XPS) depth profiling techniques. The results show that the formation of a SiO{sub x} suboxide layer at the HfO{sub 2}/Si interface is unavoidable. The HfO{sub 2} thickness and suboxide formation are highly affected by the growth parameters such as sputtering power, O{sub 2}/Ar gas ratio during sputtering, sputtering time, and substrate temperature. XRD spectra show that the deposited film has (111) monoclinic phase of HfO{sub 2}, which is also supported by FTIR spectra. The atomic concentration and chemical environment of Si, Hf, and O have been measured as a function of depth starting from the surface of the sample by XPS technique. It shows that HfO{sub 2} layers of a few nanometers are formed at the top surface. Below this thin layer, Si-Si bonds are detected just before the Si suboxide layer, and then the Si substrate is reached during the depth profiling by XPS. It is clearly understood that the highly reactive sputtered Hf atoms consume some of the oxygen atoms from the underlying SiO{sub 2} to form HfO{sub 2}, leaving Si-Si bonds behind.

Aygun, G. [Department of Physics, Izmir Institute of Technology, Urla, TR-35430 Izmir (Turkey); Yildiz, I. [Department of Physics, Middle East Technical University, TR-06531 Ankara (Turkey); Central Laboratory, Middle East Technical University, TR-06531 Ankara (Turkey)

2009-07-01T23:59:59.000Z

78

RAPID METHOD FOR DETERMINATION OF {sup 228}Ra IN WATER SAMPLES  

Science Conference Proceedings (OSTI)

A new rapid method for the determination of {sup 228}Ra in natural water samples has been developed at the SRNL/EBL (Savannah River National Lab/ Environmental Bioassay Laboratory) that can be used for emergency response or routine samples. While gamma spectrometry can be employed with sufficient detection limits to determine {sup 228}Ra in solid samples (via {sup 228}Ac) , radiochemical methods that employ gas flow proportional counting techniques typically provide lower MDA (Minimal Detectable Activity) levels for the determination of {sup 228}Ra in water samples. Most radiochemical methods for {sup 228}Ra collect and purify {sup 228}Ra and allow for {sup 228}Ac daughter ingrowth for ~36 hours. In this new SRNL/EBL approach, {sup 228}Ac is collected and purified from the water sample without waiting to eliminate this delay. The sample preparation requires only about 4 hours so that {sup 228}Ra assay results on water samples can be achieved in 90%), followed by rapid cation exchange removal of calcium. Lead, bismuth, uranium, thorium and protactinium isotopes are also removed by the cation exchange separation. {sup 228}Ac is eluted from the cation resin directly onto a DGA Resin cartridge attached to the bottom of the cation column to purify {sup 228}Ac. DGA Resin also removes lead and bismuth isotopes, along with Sr isotopes and {sup 90}Y. La is used to determine {sup 228}Ac chemical yield via ICP-MS, but {sup 133}Ba can also be used instead if ICP-MS assay is not available. Unlike some older methods, no lead or strontium holdback carriers or continual readjustment of sample pH is required.

Maxwell, S.

2012-09-05T23:59:59.000Z

79

RAPID METHOD FOR DETERMINATION OF {sup 228}Ra IN WATER SAMPLES  

SciTech Connect

A new rapid method for the determination of {sup 228}Ra in natural water samples has been developed at the SRNL/EBL (Savannah River National Lab/ Environmental Bioassay Laboratory) that can be used for emergency response or routine samples. While gamma spectrometry can be employed with sufficient detection limits to determine {sup 228}Ra in solid samples (via {sup 228}Ac) , radiochemical methods that employ gas flow proportional counting techniques typically provide lower MDA (Minimal Detectable Activity) levels for the determination of {sup 228}Ra in water samples. Most radiochemical methods for {sup 228}Ra collect and purify {sup 228}Ra and allow for {sup 228}Ac daughter ingrowth for ~36 hours. In this new SRNL/EBL approach, {sup 228}Ac is collected and purified from the water sample without waiting to eliminate this delay. The sample preparation requires only about 4 hours so that {sup 228}Ra assay results on water samples can be achieved in < 6 hours. The method uses a rapid calcium carbonate precipitation enhanced with a small amount of phosphate added to enhance chemical yields (typically >90%), followed by rapid cation exchange removal of calcium. Lead, bismuth, uranium, thorium and protactinium isotopes are also removed by the cation exchange separation. {sup 228}Ac is eluted from the cation resin directly onto a DGA Resin cartridge attached to the bottom of the cation column to purify {sup 228}Ac. DGA Resin also removes lead and bismuth isotopes, along with Sr isotopes and {sup 90}Y. La is used to determine {sup 228}Ac chemical yield via ICP-MS, but {sup 133}Ba can also be used instead if ICP-MS assay is not available. Unlike some older methods, no lead or strontium holdback carriers or continual readjustment of sample pH is required.

Maxwell, S.

2012-09-05T23:59:59.000Z

80

Supply of purified Th228 for Ra224 generators. Final CRADA Report .  

SciTech Connect

CRADA was terminated when it was determined that the Russians could not perform the terms of the subcontract. It became apparent that the Russians would not be a reliable source of Th228, as a precursor in the decay chain which leads to Ra224. Their government policies will prohibit the export of Th228 in quantities needed for commercial cancer therapy.

Ehst, D. A.; Nuclear Engineering Division

2009-10-02T23:59:59.000Z

Note: This page contains sample records for the topic "ra zr hf" 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

A Mobile Rapid-Scanning X-band Polarimetric (RaXPol) Doppler Radar System  

Science Conference Proceedings (OSTI)

A novel, rapid-scanning, X-band (3-cm wavelength), polarimetric (RaXPol), mobile radar was developed for severe-weather research. The radar employs a 2.4-m-diameter dual-polarized parabolic dish antenna on a high-speed pedestal capable of rotating ...

Andrew L. Pazmany; James B. Mead; Howard B. Bluestein; Jeffrey C. Snyder; Jana B. Houser

2013-07-01T23:59:59.000Z

82

Ground Characterization of the Scanner for Radiation Budget (ScaRaB) Flight Model 1  

Science Conference Proceedings (OSTI)

The Scanner for Radiation Budget (ScaRaB) is a satellite-based radiometer for measurements of the planetary radiation budget. It was launched in January 1994 on a Russian METEOR-3 platform and provided excellent data from February 1994 to March ...

Johannes Mueller; Rolf Stuhlmann; Renate Becker; Ehrhard Raschke; Heiko Rinck; Peter Burkert; Jean-Louis Monge; Francis Sirou; Robert Kandel; Thierry Tremas; Leonid A. Pakhomov

1997-08-01T23:59:59.000Z

83

On the Estimation of Climatological ZR Relationships  

Science Conference Proceedings (OSTI)

A statistical framework for climatological ZR parameter estimation is developed and simulation experiments are conducted to examine sampling properties of the estimators. Both parametric and nonparametric models are considered. For parametric ...

Witold F. Krajewski; James A. Smith

1991-10-01T23:59:59.000Z

84

Effects of Surface Strain on Oxygen Adsorption on Zr (0001)  

Science Conference Proceedings (OSTI)

Symposium, Materials and Fuels for the Current and Advanced Nuclear Reactors II ... octahedral sites between second and third Zr layers become most favorable because ... Alloys as Structural Materials in Generation IV Nuclear Power Plant.

85

High-spin excitations in {sup 158,159,160}Hf from recoil-decay tagging  

SciTech Connect

The 270-MeV {sup 58}Ni+{sup A}Pd reaction was used for the first recoil-decay tagging measurement with Gammasphere coupled to the Fragment Mass Analyzer at Argonne National Laboratory. Level structures of {sup 158}Hf and {sup 159}Hf are identified for the first time, and that of {sup 160}Hf is extended. The systematical behavior of the energy levels in neighboring isotones and isotopes, as well as the aligned angular momenta as a function of rotational frequency, are examined. (c) 2000 The American Physical Society.

Ding, K. Y. [Department of Physics and Astronomy, Rutgers University, New Brunswick, New Jersey 08903 (United States); Cizewski, J. A. [Department of Physics and Astronomy, Rutgers University, New Brunswick, New Jersey 08903 (United States); Seweryniak, D. [Argonne National Laboratory, Argonne, Illinois 60439 (United States); Amro, H. [Argonne National Laboratory, Argonne, Illinois 60439 (United States); Carpenter, M. P. [Argonne National Laboratory, Argonne, Illinois 60439 (United States); Davids, C. N. [Argonne National Laboratory, Argonne, Illinois 60439 (United States); Fotiades, N. [Department of Physics and Astronomy, Rutgers University, New Brunswick, New Jersey 08903 (United States); Janssens, R. V. F. [Argonne National Laboratory, Argonne, Illinois 60439 (United States); Lauritsen, T. [Argonne National Laboratory, Argonne, Illinois 60439 (United States); Lister, C. J. [Argonne National Laboratory, Argonne, Illinois 60439 (United States)] (and others)

2000-09-01T23:59:59.000Z

86

Optimal Control Theory Applied to an Objective Analysis of a Tidal Current Mapping by HF Radar  

Science Conference Proceedings (OSTI)

Optimal control can provide a tool to perform an optimization of a tidal model via a data assimilation operation. A pilot study is presented here to test the theoretical and numerical feasibility of an assimilation of HF radar current ...

Jean-Luc Devenon

1990-04-01T23:59:59.000Z

87

Observation of Wave Energy Evolution in Coastal Areas Using HF Radar  

Science Conference Proceedings (OSTI)

The capability of phased-array HF radar systems to sample the spatial distribution of wave energy is investigated in different storm scenarios and coastal configurations. First, a formulation introduced by D. E. Barrick to extract significant ...

Rafael J. Ramos; Hans C. Graber; Brian K. Haus

2009-09-01T23:59:59.000Z

88

Human equivalent antenna model for HF exposures: analytical versus numerical approach  

Science Conference Proceedings (OSTI)

In this paper, the human exposure to HF radiation is analyzed using the simplified human equivalent antenna model featuring analytical and numerical approach, respectively. Namely, the human body is represented by an equivalent receiving straight thin ...

Dragan Poljak; Silvestar Sesnic; Ivana Zulim

2009-09-01T23:59:59.000Z

89

Surface Termination and Roughness of Ge(100) Cleaned by HF and HCl Solutions  

DOE Green Energy (OSTI)

Oxide removal from Ge(100) surfaces treated by HCl and HF solutions with different concentrations are systematically studied by synchrotron radiation photoelectron spectroscopy (SR-PES). SR-PES results show that clean surfaces without any oxide can be obtained after wet chemical cleaning followed by vacuum annealing with a residual carbon contamination of less than 0.02 monolayer. HF etching leads to a hydrogen terminated Ge surface whose hydrogen coverage is a function of the HF concentration. In contrast, HCl etching yields a chlorine terminated surface. Possible etching mechanisms are discussed. Surface roughness after HF and HCl treatments is also investigated by AFM, which shows that HF treatment leaves a rougher surface than HCl. Germanium (Ge) is increasingly being studied for MOSFET applications to take advantage of its high intrinsic electron and hole mobility. To fabricate high performance devices on Ge, it is essential to understand Ge surface chemistry and find an effective way to clean and passivate its surface. Although Si surface cleaning and passivation have been extensively studied, only recently has some research been done on Ge surfaces. Conventional XPS results show that HF etching removes Ge oxide and carbon contamination significantly, and HCl etching leads to a chlorine terminated Ge(111) surface, which only forms Ge monochloride. However, it is difficult to probe the details of the chemical nature of treated surfaces and quantify the surface termination and cleanness with conventional XPS, because of its limited surface sensitivity and resolution. In addition, little attention has been paid to the HF concentration, which turns out to be an important factor in the surface hydrogen passivation. In this work, we study the Ge(100) surfaces treated by aqueous HCl and HF solutions with three different concentrations by synchrotron radiation photoelectron spectroscopy (SR-PES) at Stanford Synchrotron Radiation Laboratory (SSRL). Using SR-PES, we can tune the photon energy to achieve very high surface sensitivity and good resolution, so the chemical states of treated surfaces can be resolved unambiguously, and the surface termination and cleanness can be quantified. We find that HF treatment results in a hydrogen terminated surface, and the hydrogen coverage depends on the HF concentration. In contrast, a Cl terminated Ge(100) surface is achieved after HCl treatment. Both monochloride and dichloride are formed on the surface. The termination difference between HF etching and HCl etching can be explained by the etching mechanism. In both cases, the residual carbon and oxygen after chemical etching can be removed by vacuum annealing.

Sun, Shiyu; /SLAC, SSRL

2005-10-10T23:59:59.000Z

90

Subduction Controls of Hf and Nd Isotopes in Lavas of the Aleutian Island Arc  

SciTech Connect

The Hf and Nd isotopic compositions of 71 Quaternary lavas collected from locations along the full length of the Aleutian island arc are used to constrain the sources of Aleutian magmas and to provide insight into the geochemical behavior of Nd and Hf and related elements in the Aleutian subduction-magmatic system. Isotopic compositions of Aleutian lavas fall approximately at the center of, and form a trend parallel to, the terrestrial Hf-Nd isotopic array with {var_epsilon}{sub Hf} of +12.0 to +15.5 and {var_epsilon}{sub Nd} of +6.5 to +10.5. Basalts, andesites, and dacites within volcanic centers or in nearby volcanoes generally all have similar isotopic compositions, indicating that there is little measurable effect of crustal or other lithospheric assimilation within the volcanic plumbing systems of Aleutian volcanoes. Hafnium isotopic compositions have a clear pattern of along-arc increase that is continuous from the eastern-most locations near Cold Bay to Piip Seamount in the western-most part of the arc. This pattern is interpreted to reflect a westward decrease in the subducted sediment component present in Aleutian lavas, reflecting progressively lower rates of subduction westward as well as decreasing availability of trench sediment. Binary bulk mixing models (sediment + peridotite) demonstrate that 1-2% of the Hf in Aleutian lavas is derived from subducted sediment, indicating that Hf is mobilized out of the subducted sediment with an efficiency that is similar to that of Sr, Pb and Nd. Low published solubility for Hf and Nd in aqueous subduction fluids lead us to conclude that these elements are mobilized out of the subducted component and transferred to the mantle wedge as bulk sediment or as a silicate melt. Neodymium isotopes also generally increase from east to west, but the pattern is absent in the eastern third of the arc, where the sediment flux is high and increases from east to west, due to the presence of abundant terrigenous sediment in the trench east of the Amlia Fracture Zone, which is being subducting beneath the arc at Seguam Island. Mixing trends between mantle wedge and sediment end members become flatter in Hf-Nd isotope space at locations further west along the arc, indicating that the sediment end member in the west has either higher Nd/Hf or is more radiogenic in Hf compared to Nd. This pattern is interpreted to reflect an increase in pelagic clay relative to the terrigenous subducted sedimentary component westward along the arc. Results of this study imply that Hf does not behave as a conservative element in the Aleutian subduction system, as has been proposed for some other arcs.

Yogodzinski, Gene; Vervoort, Jeffery; Brown, Shaun Tyler; Gerseny, Megan

2010-08-29T23:59:59.000Z

91

Pygmy dipole strength in {sup 90}Zr  

SciTech Connect

The dipole response of the N=50 nucleus {sup 90}Zr was studied in photon-scattering experiments at the electron linear accelerator ELBE with bremsstrahlung produced at kinetic electron energies of 7.9, 9.0, and 13.2 MeV. We identified 189 levels up to an excitation energy of 12.9 MeV. Statistical methods were applied to estimate intensities of inelastic transitions and to correct the intensities of the ground-state transitions for their branching ratios. In this way we derived the photoabsorption cross section up to the neutron-separation energy. This cross section matches well the photoabsorption cross section obtained from ({gamma}, n) data and thus provides information about the extension of the dipole-strength distribution toward energies below the neutron-separation energy. An enhancement of E1 strength has been found in the range of 6 to 11 MeV. Calculations within the framework of the quasiparticle-phonon model ascribe this strength to a vibration of the excessive neutrons against the N=Z neutron-proton core, giving rise to a pygmy dipole resonance.

Schwengner, R.; Rusev, G.; Benouaret, N.; Beyer, R.; Erhard, M.; Junghans, A. R.; Klug, J.; Kosev, K.; Nair, C.; Schilling, K. D.; Wagner, A. [Institut fuer Strahlenphysik, Forschungszentrum Dresden-Rossendorf, D-01314 Dresden (Germany); Tsoneva, N. [Institut fuer Theoretische Physik, Universitaet Giessen, D-35392 Giessen (Germany); Institute for Nuclear Research and Nuclear Energy, BAS, BG-1784 Sofia (Bulgaria); Grosse, E. [Institut fuer Strahlenphysik, Forschungszentrum Dresden-Rossendorf, D-01314 Dresden (Germany); Institut fuer Kern- und Teilchenphysik, Technische Universitaet Dresden, D-01062 Dresden (Germany); Lenske, H. [Institut fuer Theoretische Physik, Universitaet Giessen, D-35392 Giessen (Germany)

2008-12-15T23:59:59.000Z

92

Atomic-Scale Structure of Al2O3-ZrO2 Mixed Oxides Prepared by Laser Ablation  

Science Conference Proceedings (OSTI)

By means of x-ray diffractometry (XRD) and X-ray absorption fine structure spectroscopy, the phase composition and atomic structure of laser evaporated ZrO2 and ZrO2-Al2O3 nanopowders have been studied. The results indicate that pure ZrO2 exists in the form of tetragonal structure, Al2O3 doped ZrO2 nanoparticles, however, have cubic structure. Compared to bulk tetragonal ZrO2, pure tetragonal ZrO2 nanoparticles have a shorter Zr-O- and Zr-Zr shell, indicating that the lattice contracts with decreasing particle size. For Al2O3 doped ZrO2 solid solution, the distances of first Zr-O and Zr-Zr (Al) coordination decrease with increasing solid solubility. The disorder degree of the ZrO2 lattice increases with increasing solid solubility. The coevaporated ZrO2-Al2O3 is quickly solidified into amorphous phase when it is ablated in a higher pressure. The amorphous phase contains Zr-O-Zr (Al) clusters and has shorter Zr-O distance and tower Zr-O coordination number.

Yang Xiuchun [College of Materials Science and Engineering, Tongji University, Shanghai 200092 (China); Dubiel, M. [Department of Physics, Martin Luther University of Halle, D-06108 Halle (Germany); Hofmeister, H. [Max Planck Institute of Microstructure Physics, Weinberg 2, D-06120 Halle (Germany); Riehemann, W. [Department of Materials Science and Engineering, Clausthal University of Technology (Germany)

2007-02-02T23:59:59.000Z

93

Special Report: OAS-RA-10-15 | Department of Energy  

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

0-15 0-15 Special Report: OAS-RA-10-15 August 4, 2010 Review of the Department of Energy's Plan for Obligating Remaining Recovery Act Contract and Grant Funding Report OAS-RA-10-15, Review of the Department of Energy's Plan for Obligating Remaining Recovery Act Contract and Grant Funding, was issued to the Secretary and the Department's management on August 4, 2010. On August 5, 2010, the Department announced the award of the so-called "FutureGen 2.0" contract, using $1 billion of American Recovery and Reinvestment Act funding. Despite our request, specific information pertinent to this action was not provided to the Office of Inspector General prior to release of the audit report. These circumstances are described on page 4 of the report in the paragraph referring to the Fossil Energy Program. The data is highly

94

RA Available  

E-Print Network (OSTI)

The RSSG has been busy since the last AAG in New Orleans. The material below gives you a partial summary of our groups latest activities. The Newsletter Special thanks to John

Tas Available; Aag Cryosphere Session

2004-01-01T23:59:59.000Z

95

Formation of HfW2 in Mechanically Alloyed W-Based Alloy Systems  

Science Conference Proceedings (OSTI)

Abstract Scope, The lethality of depleted uranium (DU) as a kinetic energy penetrator ... An alternative replacement, a tungsten (W)-based bulk metallic glass would .... Oxidation Resistance of Zr- and Ti- Based Bulk Metallic Glasses in the...

96

Microstructure and Bonding Behavior of a New Zr-Bearing Interlayer ...  

Science Conference Proceedings (OSTI)

Winnipeg, Manitoba, Canada R3T 2N2. Abstract. Based on the composition of the interdendritic Zr-rich melt in the later stages of solidification of. Zr-containing...

97

SP-29: Oxidation Behavior of Zr56Al16Co28 Metallic Glasses  

Science Conference Proceedings (OSTI)

Abstract Scope, The oxidation behavior of Zr56A16Co28 bulk metallic glass was ... A high resistance against oxidation in Zr56Al16Co28 bulk metallic glasses...

98

Atomistic Modeling of Fission Products Transport in SiC and ZrC ...  

Science Conference Proceedings (OSTI)

Some studies have suggested the ZrC can provide improved fission product retention compared to SiC and ZrC is presently under consideration for use with,

99

Enthalpy of gamma-delta Transition in Ternary U-Pu-Zr Fuel Alloys  

Science Conference Proceedings (OSTI)

Presentation Title, Enthalpy of gamma-delta Transition in Ternary U-Pu-Zr Fuel ... that the activities of Pu and Zr in the delta phase may be self-compensating.

100

Lanthanum diffusion in the TiN/LaOx/HfSiO/SiO2/Si stack  

Science Conference Proceedings (OSTI)

Band edge Complementary Metal Oxide Semiconductor (CMOS) devices are obtained by insertion of a thin LaO"x layer between the high-k (HfSiO) and metal gate (TiN). High temperature post deposition anneal induces Lanthanum diffusion across the HfSiO towards ... Keywords: APT, ATR-FTIR, HfSiO, Interfacial dipole, La, Metal/high-k stack, S-XPS, Threshold voltage tuning, TiN, ToF-SIMS

E. Martinez; P. Ronsheim; J. -P. Barnes; N. Rochat; M. Py; M. Hatzistergos; O. Renault; M. Silly; F. Sirotti; F. Bertin; N. Gambacorti

2011-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "ra zr hf" 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

Spectroscopic analysis of Al and N diffusion in HfO{sub 2}  

Science Conference Proceedings (OSTI)

X-ray photoelectron core level spectroscopy, secondary ion mass spectroscopy, spectroscopic ellipsometry, and extended x-ray absorption fine structure measurements have been employed to distinguish the effects of Al and N diffusion on the local bonding and microstructure of HfO{sub 2} and its interface with the Si substrate in (001)Si/SiO{sub x}/2 nm HfO{sub 2}/1 nm AlO{sub x} film structures. The diffusion of Al from the thin AlO{sub x} cap layer deposited on both annealed and unannealed HfO{sub 2} has been observed following anneal in N{sub 2} and NH{sub 3} ambient. Both N{sub 2} and NH{sub 3} subsequent anneals were performed to decouple incorporated nitrogen from thermal reactions alone. Causal variations in the HfO{sub 2} microstructure combined with the dependence of Al and N diffusion on initial HfO{sub 2} conditions are presented with respect to anneal temperature and ambient.

Lysaght, P. S.; Price, J.; Kirsch, P. D. [SEMATECH, 257 Fuller Rd, Albany, New York 12203 (United States); Woicik, J. C.; Weiland, C. [National Institute of Standards and Technology, Gaithersburg, Maryland 20899 (United States); Sahiner, M. A. [Seton Hall University, 400 South Orange Ave, South Orange, New Jersey 07079 (United States)

2012-09-15T23:59:59.000Z

102

Comparison of radon fluxes with gamma-radiation exposure rates and soil /sup 226/Ra concentrations  

Science Conference Proceedings (OSTI)

Radon fluxes and contact gamma-radiation-exposure rates were measured at the grid points of rectangular grids on three properties in Edgemont, South Dakota that were known to have deposits of residual radioactivity relatively near to the surface. The coefficient of determination, r/sup 2/, between the radon fluxes and the contact gamma-radiation-exposure rates varied from 0.89 to 0.31 for the three properties. The property having the highest fluxes and residual radioactivity of relatively uniform depth showed the highest correlation between fluxes and exposure rates, and the property having residual radioactivity that varied considerably in depth showed the lowest. Correlations between fluxes and /sup 226/Ra concentrations measured in boreholes that varied in depth from 60 to 195 cm were lower than those between fluxes and exposure rates, indicating that exposure rates are better than /sup 226/Ra measurements for detecting elevated radon fluxes from near-surface deposits. Measurements made on one property at two different times indicated that if the average flux were determined from a large number (40) of measurements at one time, the average flux at a later time could be estimated from a few measurements using the assumption that the change in the flux at individual locations will be equal to the change in the average flux. Flux measurements around two buildings showing elevated indoor radon-daughter concentrations, but around which no residual radioactivity had been discovered by /sup 226/Ra and gamma-radiation measurements, provided no clear indication of the presence of such material, possibly because none was present.

Young, J.A.; Thomas, V.W.

1984-04-01T23:59:59.000Z

103

The Department of Energy's Solid-State Lighting Program, OAS-RA-L-13-03  

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

Solid- Solid- State Lighting Program OAS-RA-L-13-03 February 2013 Department of Energy Washington, DC 20585 February 28, 2013 MEMORANDUM FOR THE DIRECTOR, NATIONAL ENERGY TECHNOLOGY LABORATORY FROM: Jack Rouch, Director Central Audits Division Office of Inspector General SUBJECT: INFORMATION: Audit Report on "The Department of Energy's Solid-State Lighting Program" BACKGROUND The Department of Energy's (Department) Office of Energy Efficiency and Renewable Energy established the Solid-State Lighting Program to advance the development and market introduction of energy-efficient white-light sources for general illumination. Since 2003, the Department has cooperated with industry partners to invest in research and development of solid-

104

The Department of Energy's Transportation Electrification Program, 0AS-RA-12-11  

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

Transportation Electrification Transportation Electrification Program OAS-RA-12-11 May 2012 Department of Energy Washington, DC 20585 May 10, 2012 MEMORANDUM FOR THE DEPUTY ASSISTANT SECRETARY FOR ENERGY EFFICIENCY FROM: Joanne Hill, Director Central Audits Division Office of Inspector General SUBJECT: INFORMATION: Special Report on "The Department of Energy's Transportation Electrification Program" INTRODUCTION The Department of Energy established the Transportation Electrification Program (Program) to demonstrate and evaluate the deployment of plug-in hybrid vehicles and their associated infrastructure needs. Funded by the American Recovery and Reinvestment Act of 2009, the Program provided about $400 million to 18 grant recipients-12 non-profit entities and 6 for-

105

Performance and reliability improvement of HfSiON gate dielectrics using chlorine plasma treatment  

Science Conference Proceedings (OSTI)

The effects of chlorine plasma treatment on HfSiON gate dielectrics were investigated with respect to device performance and reliability characteristics. The chlorine plasma treatment was performed on atomic layer deposited HfSiON films to remove the residual carbon content. The optimal chlorine plasma treatment is shown to lower gate leakage current density without increasing equivalent oxide thickness of the gate stack. Secondary ion mass spectroscopy depth profiling showed that the carbon residue in HfSiON was reduced by the chlorine plasma treatment. It is demonstrated that an optimized chlorine plasma treatment improves the transistor I{sub on}-I{sub off} characteristics and reduces negative-bias temperature instability.

Park, Hong Bae; Ju, Byongsun [Samsung Electronics R and D Center (Korea, Republic of); Kang, Chang Yong; Park, Chanro; Park, Chang Seo [SEMATECH, Austin, Texas 78741 (United States); Lee, Byoung Hun [Gwangju Institute of Science and Technology, Gwangju (Korea, Republic of); Kim, Tea Wan; Kim, Beom Seok; Choi, Rino [Inha University, 253 Yonghyun-dong, Nam-gu, Incheon 402-751 (Korea, Republic of)

2009-01-26T23:59:59.000Z

106

First principles simulation of a superionic phase of hydrogen fluoride (HF) at high pressures and temperatures  

DOE Green Energy (OSTI)

The authors have conducted Ab initio molecular dynamics simulations of hydrogen fluoride (HF) at pressures of 5-66 GPa along the 900 K isotherm. They predict a superionic phase at 33 GPa, where the fluorine atoms are fixed in a bcc lattice while the hydrogen atoms diffuse rapidly with a diffusion constant of between 2 x 10{sup -5} and 5 x 10{sup -5} cm{sup 2}/s. They find that a transformation from asymmetric to symmetric hydrogen bonding occurs in HF at 66 GPa and 900 K. With superionic HF they have discovered a model system where symmetric hydrogen bonding occurs at experimentally achievable conditions. Given previous results on superionic H{sub 2}O[1,2,3] and NH{sub 3}[1], they conclude that high P,T superionic phases of electronegative element hydrides could be common.

Goldman, N; Fried, L E

2006-04-10T23:59:59.000Z

107

Band offsets in HfO{sub 2}/InGaZnO{sub 4} heterojunctions  

SciTech Connect

The valence band discontinuity ({Delta}E{sub V}) of sputter deposited HfO{sub 2}/InZnGaO{sub 4} (IGZO) heterostructures was obtained from x-ray photoelectron spectroscopy measurements. The HfO{sub 2} exhibited a bandgap of 6.07 eV from absorption measurements. A value of {Delta}E{sub V} = 0.48 {+-} 0.025 eV was obtained by using the Ga 2p{sub 3/2}, Zn 2p{sub 3/2}, and In 3d{sub 5/2} energy levels as references. This implies a conduction band offset {Delta}E{sub C} of 2.39 eV in HfO{sub 2}/InGaZnO{sub 4} heterostructures and a nested interface band alignment.

Cho, Hyun [Department of Nanomechatronics Engineering, Pusan National University, Gyeongnam 627-706 (Korea, Republic of); Douglas, E. A.; Gila, B. P.; Craciun, V.; Lambers, E. S.; Pearton, S. J. [Department of Materials Science and Engineering, University of Florida, Gainesville, Florida 32611 (United States); Ren Fan [Department of Chemical Engineering, University of Florida, Gainesville, Florida 32611 (United States)

2012-01-02T23:59:59.000Z

108

Encapsulation of Mg-Zr Fuel Cladding in Geopolymer Material  

Science Conference Proceedings (OSTI)

Symposium, Materials Science of Nuclear Waste Management ... Mg-Zr. Strategy could be to encapsulate these wastes into a geopolymer in a form suitable ... Delayed Hydride Cracking Susceptibility of Spent Fuel Rods in Dry Storage ... Isolation of Matrices for High-Level Radioactive Waste Using Metal Coatings Prepared...

109

Evaluation of a New Polarimetrically Based ZR Relation  

Science Conference Proceedings (OSTI)

A new polarimetrically based (or, pol-based) ZR relation of the form Z = aR1.5 is described and evaluated where the multiplicative coefficient a is continuously adjusted as the drop size distribution evolves in space and time. The methodology is ...

V. N. Bringi; Taiwen Tang; V. Chandrasekar

2004-04-01T23:59:59.000Z

110

The correlation of the electrical properties with electron irradiation and constant voltage stress for MIS devices based on high-k double layer (HfTiSiO: N and HfTiO:N) dielectrics  

Science Conference Proceedings (OSTI)

This paper describes the influence of e-beam irradiation and constant voltage stress on the electrical characteristics of metal-insulator-semiconductor structures, with double layer high-k dielectric stacks containing HfTiSiO:N and HfTiO:N ultra-thin ... Keywords: Electrical properties, High-k dielectrics, Metal-insulator-semiconductor (MIS) devices

V. Mikhelashvili; P. Thangadurai; W. D. Kaplan; G. Eisenstein

2010-11-01T23:59:59.000Z

111

Electrical and physical characteristics of HfLaON-gated metal-oxide-semiconductor capacitors with various nitrogen concentration profiles  

Science Conference Proceedings (OSTI)

The comparative studies of electrical and physical characteristics of HfLaON-gated metal-oxide-semiconductor (MOS) capacitors with various nitrogen concentration profiles (NCPs) were investigated. Various NCPs in HfLaON gate dielectrics were adjusted ... Keywords: Charge trapping, Current-conduction, High-k dielectric, Metal-oxide-semiconductor (MOS), Nitrogen concentration profiles (NCPs)

Chin-Lung Cheng; Jeng-Haur Horng; Hung-Yang Tsai

2011-02-01T23:59:59.000Z

112

MicroPlanet Technology Corp formerly HF Capital Corp | Open Energy  

Open Energy Info (EERE)

Technology Corp formerly HF Capital Corp Technology Corp formerly HF Capital Corp Jump to: navigation, search Name MicroPlanet Technology Corp (formerly HF Capital Corp) Place Seattle, Washington Zip 98104 Sector Efficiency Product MicroPlanet develops energy-efficiency products for homes and small businesses. Specifically they focus on custom voltage regulators that result in energy savings. On May 6, 2005, the company reverse-listed into Toronto Venture Exchange quoted HF Capital. Coordinates 47.60356°, -122.329439° 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":47.60356,"lon":-122.329439,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

113

Improving HF Radar Surface Current Measurements with Measured Antenna Beam Patterns  

Science Conference Proceedings (OSTI)

A high-frequency (HF) radar system is deployed on the New Jersey continental shelf as part of a coastal ocean observatory. The system includes two remote transmitreceive sites in Brant Beach and Brigantine, New Jersey, and a central processing ...

Josh T. Kohut; Scott M. Glenn

2003-09-01T23:59:59.000Z

114

Properties of ALD HfTaxOy high-k layers deposited on chemical silicon oxide  

Science Conference Proceedings (OSTI)

HfTa"xO"y high-k dielectric layers with different compositions were deposited using ALD on 1nm SiO"2 generated by ozone based cleaning of 200mm Si(100) surface. Physical characterization of blanket layers and C-V mapping demonstrates that the ALD layers ...

C. Zhao; T. Witters; P. Breimer; J. Maes; M. Caymax; S. De Gendt

2007-01-01T23:59:59.000Z

115

Interpretation of Coastal HF RadarDerived Surface Currents with High-Resolution Drifter Data  

Science Conference Proceedings (OSTI)

Dense arrays of surface drifters are used to quantify the flow field on time and space scales over which high-frequency (HF) radar observations are measured. Up to 13 drifters were repetitively deployed off the Santa Barbara and San Diego coasts ...

Carter Ohlmann; Peter White; Libe Washburn; Brian Emery; Eric Terrill; Mark Otero

2007-04-01T23:59:59.000Z

116

Examination Report: OAS-RA-L-12-07 | Department of Energy  

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

L-12-07 L-12-07 Examination Report: OAS-RA-L-12-07 September 20, 2012 The Department of Energy's American Recovery and Reinvestment Act - Ohio State Energy Program The Department of Energy's State Energy Program (SEP) provides grants to states, territories and the District of Columbia (states) to support their energy priorities and fund projects that meet their unique energy needs. The American Recovery and Reinvestment Act of 2009 (Recovery Act) significantly expanded the SEP by providing an additional $3.1 billion for state projects. The State of Ohio's, Ohio Department of Development (ODOD) was allocated $96.1 million in SEP funds under the Recovery Act. The Office of Inspector General contracted with an independent certified public accounting firm, Otis & Associates, PC (Otis), to perform the

117

Audit Report: OAS-RA-L-13-01 | Department of Energy  

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

1 1 Audit Report: OAS-RA-L-13-01 November 1, 2012 Implementation of the Department of Energy's Concentrating Solar Power Program The Department of Energy's (Department) Office of Energy Efficiency and Renewable Energy's Concentrating Solar Power Program is intended to broaden the use of concentrating solar power by making the technology cost competitive in the conventional power market. The Department plans to achieve this goal through cost-shared contracts with private industry, as well as facilitating advanced research at its national laboratories. Concentrating solar power technologies concentrate the sun's energy and convert it to heat which is then used to drive an engine or turbine to produce electrical power. The audit found that the Department had

118

Examination Report: OAS-RA-13-02 | Department of Energy  

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

2 2 Examination Report: OAS-RA-13-02 October 9, 2012 County of Los Angeles - Energy Efficiency and Conservation Block Grant Program Funds Provided by the American Recovery and Reinvestment Act of 2009 As part of the American Recovery and Reinvestment Act of 2009 (Recovery Act), the Energy Efficiency and Conservation Block Grant (EECBG) Program received $3.2 billion to develop, promote, implement and manage energy efficiency and conservation projects and programs designed to reduce fossil fuel emissions, reduce total energy use of the eligible entities, and improve energy efficiency in the transportation, building and other appropriate sectors. The County of Los Angeles (County) received a $15.4 million formula grant award and a $30 million competitive grant award, both awards were to be

119

Audit Letter Report: OAS-RA-L-10-03 | Department of Energy  

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

3 3 Audit Letter Report: OAS-RA-L-10-03 April 23, 2010 Audit of Moab Mill Tailings Cleanup Project The Moab Uranium Mill Tailings Remedial Action Project (Moab Project) is located at a former uranium-ore processing facility near Moab, Utah on the west bank of the Colorado River. In 2005, the Department of Energy (Department) issued a Record of Decision to relocate, by rail, approximately 16 million tons of uranium mill tailings from that location to a disposal site 30 miles away in Crescent Junction, Utah. In June 2008, the Department awarded a $92 million contract, with approximately $6 million in available fee, to EnergySolutions to construct the necessary infrastructure, upgrade the rail lines, and begin the transportation of mill tailings to Crescent Junction. Under the terms of the contract,

120

Audit Letter Report: OAS-RA-L-10-05 | Department of Energy  

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

5 5 Audit Letter Report: OAS-RA-L-10-05 August 12, 2010 Decommissioning and Demolition Activities at Office of Science Sites In February 2009, the President signed the American Recovery and Reinvestment Act of 2009 (Recovery Act) into law. The Department of Energy's (Department) Office of Environmental Management (EM) allocated $140 million of Recovery Act funds to decommission and demolish (D&D) Office of Science facilities at Argonne National Laboratory (Argonne) and to accelerate ongoing D&D activities at Brookhaven National Laboratory (Brookhaven). D&D activities funded at Argonne included the demolition of Buildings 330 and 310, the removal of wastes and nuclear material from another building, and the removal of the majority of the remote-handled and

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121

Special Report: OAS-RA-12-14 | Department of Energy  

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

14 14 Special Report: OAS-RA-12-14 August 28, 2012 Inquiry into the Procurement of Law Firm Services and Management of Law Firm-Disclosed Organizational Conflicts of Interest by the Department of Energy's Loan Programs Office We received anonymous complaints alleging various improprieties in the Loan Programs Office related to the procurement of legal services and the management of law firm disclosed conflicts of interest in the Innovative Technology Loan Guarantee Program (Program). In response, we initiated a special inquiry to review the circumstances surrounding the allegations. Our inquiry did not substantiate the specific allegations outlined in the complaint. Absent additional information, we plan no further action regarding the original allegations. We did, however, identify

122

Audit Report: OAS-RA-13-16 | Department of Energy  

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

6 6 Audit Report: OAS-RA-13-16 March 28, 2013 The Department of Energy's American Recovery and Reinvestment Act Energy Efficiency and Conservation Block Grant Program-State of Colorado and County of Boulder As part of the American Recovery and Reinvestment Act of 2009 (Recovery Act), the Energy Efficiency and Conservation Block Grant Program received $3.2 billion to develop, promote, implement and manage energy efficiency and conservation projects and programs designed to reduce fossil fuel emissions, reduce total energy use of the eligible entities, and improve energy efficiency in the transportation, building and other appropriate sectors. The Department of Energy (Department) awarded a $9.6 million formula grant to the State of Colorado (Colorado) in September 2009, and a

123

Special Report: OAS-RA-13-10 | Department of Energy  

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

3-10 3-10 Special Report: OAS-RA-13-10 February 8, 2013 The Department of Energy's Management of the Award of a $150 Million Recovery Act Grant to LG Chem Michigan Inc The Department of Energy's Vehicle Technologies Program was established to develop and deploy efficient and environmentally friendly highway transportation technologies to reduce the Nation's dependence on foreign oil and provide greater energy security. The Vehicle Technologies Program received $2.4 billion under the American Recovery and Reinvestment Act of 2009 (Recovery Act) for these purposes. In February 2010, LG Chem Michigan Inc. (LG Chem Michigan), formerly Compact Power, Inc., was awarded more than $150 million in Recovery Act funding to help construct a $304 million battery cell manufacturing plant in Holland, Michigan. On October

124

Special Report: OAS-RA-L-12-01 | Department of Energy  

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

L-12-01 L-12-01 Special Report: OAS-RA-L-12-01 November 28, 2011 Special Inquiry on the Office of the Chief Financial Officer's Information Technology Expenditures The Office of Inspector General (OIG) received a complaint on April 13, 2011, through the OIG Hotline alleging the waste of appropriated Fiscal Year 2010 and American Recovery and Reinvestment Act of 2009 (Recovery Act) funds by senior officials within the Office of the Chief Financial Officer (OCFO). Information alleged included the mismanagement of over $6 million worth of software contracts and user licenses. Specifically, the complaint reported issues with the procurement and implementation of the Market Allocation Modeling Effort (MarkAl), the Multi-Attribute Decision Model (MADA), Microsoft's SharePoint, the @Risk software, and the

125

Audit Report: OAS-RA-13-07 | Department of Energy  

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

7 7 Audit Report: OAS-RA-13-07 January 17, 2013 The Department of Energy's Weatherization Assistance Program Funded under the American Recovery and Reinvestment Act for the State of Maryland The Department of Energy's (Department) Weatherization Assistance Program received $5 billion under the American Recovery and Reinvestment Act of 2009 (Recovery Act) to improve the energy efficiency of residences owned or occupied by low-income persons. The Department subsequently awarded a 3-year Recovery Act Weatherization Assistance Program (Weatherization Program) grant of $61.4 million to the State of Maryland (Maryland or State) to weatherize 6,850 homes. This grant provided over eight times the approximately $7.4 million in Weatherization funds made available to

126

Audit Report: OAS-RA-14-02 | Department of Energy  

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

14-02 14-02 Audit Report: OAS-RA-14-02 November 25, 2013 The Department of Energy's American Recovery and Reinvestment Act Energy Efficiency and Conservation Block Grant Program - District of Columbia The Department of Energy's Energy Efficiency and Conservation Block Grant (EECBG) Program received about $3.2 billion under the American Recovery and Reinvestment Act of 2009 to help state and local entities develop, implement and manage energy efficiency and conservation projects. Of the funding provided, more than $2.7 billion was distributed to over 2,000 entities using a population-driven formula. The Department allocated about $9.6 million in December 2009 to the District of Columbia government through the District Department of the Environment (DDOE). DDOE selected

127

Special Report: OAS-RA-10-01 | Department of Energy  

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

10-01 10-01 Special Report: OAS-RA-10-01 October 21, 2009 The Department of Energy's Quality Assurance Process for Prime Recipients' Reporting for the American Recovery and Reinvestment Act of 2009 The American Recovery and Reinvestment Act of 2009 (Recovery Act) was established to jumpstart the U.S. economy, create or save millions of jobs, spur technological advances in health and science, and invest in the Nation's energy future. The Department of Energy (Department) will receive an unprecedented $37 billion in Recovery Act funding to support a variety of science, energy, and environmental initiatives. The majority of the funding received by the Department will be allocated to various recipients through grants, cooperative agreements, contracts, and other financial

128

Audit Report: OAS-RA-13-08 | Department of Energy  

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

13-08 13-08 Audit Report: OAS-RA-13-08 January 10, 2013 The Department of Energy's $700 Million Smart Grid Demonstration Program Funded through the American Recovery and Reinvestment Act of 2009 The Department of Energy's (Department) Office of Electricity Delivery and Energy Reliability received about $4.5 billion under the American Recovery and Reinvestment Act of 2009 (Recovery Act) to enhance the reliability and resilience of the Nation's power grid, or nearly 33 times the amount appropriated in Fiscal Year 2009. Of the amount awarded, the Department allocated nearly $700 million to the Smart Grid Demonstration Program (Program) to fund 32 regional demonstrations and energy storage projects. The Program also provided supplemental Recovery Act funding to 10 existing

129

Audit Report: OAS-RA-L-11-04 | Department of Energy  

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

4 4 Audit Report: OAS-RA-L-11-04 March 2, 2011 The Department's Infrastructure Modernization Projects under the Recovery and Reinvestment Act of 2009 The American Recovery and Reinvestment Act of 2009 (Recovery Act) was enacted on February 17, 2009. The goals of the Recovery Act are to retain or create jobs, increase economic efficiency, and invest in infrastructure that will provide long-term economic benefits. The Recovery Act provided just over $36 billion for the Department of Energy (Department), including $198 million to be used by the Office of Science (Science) for infrastructure modernization initiatives. According to Science officials, modernization was needed to many Department laboratories, offices, and other facilities due to their age. Science's Recovery Act Infrastructure

130

Examination Report: OAS-RA-13-05 | Department of Energy  

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

5 5 Examination Report: OAS-RA-13-05 January 17, 2013 Prince George's County Department of Housing and Community Development - Weatherization Assistance Program Funds Provided by the American Recovery and Reinvestment Act of 2009 As part of the American Recovery and Reinvestment Act of 2009 (Recovery Act) the Weatherization Assistance Program (Weatherization Program) received $5 billion to reduce energy consumption for low-income households through energy efficient upgrades. The State of Maryland (State) Department of Housing and Community Development received $61 million in Recovery Act Weatherization Program funding, of which $2.1 million was allocated to the Prince George's County Department of Housing and Community Development (County). The State was responsible for administering

131

Audit Report: OAS-RA-12-07 | Department of Energy  

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

7 7 Audit Report: OAS-RA-12-07 April 6, 2012 The Department of Energy's Weatherization Assistance Program Funded under the American Recovery and Reinvestment Act for the State of New York Under the American Recovery and Reinvestment Act of 2009 (Recovery Act), the Department of Energy's (Department) Weatherization Assistance Program (Weatherization Program) received $5 billion to increase the energy efficiency of dwellings owned or occupied by low-income persons. Subsequently, the Department awarded approximately $394 million in a Recovery Act weatherization grant to the State of New York (New York). New York's Weatherization Program is administered by the Division of Housing and Community Renewal (DHCR) through 74 local entities. New York's goal is to weatherize approximately 45,000 units with Recovery Act

132

Audit Report: OAS-RA-13-15 | Department of Energy  

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

5 5 Audit Report: OAS-RA-13-15 March 21, 2013 The Department of Energy's Industrial Carbon Capture and Storage Program Funded by the American Recovery and Reinvestment Act The Department of Energy (Department) received nearly $1.5 billion through the American Recovery and Reinvestment Act of 2009 (Recovery Act) to invest in clean industrial technologies and sequestration projects through the Industrial Carbon Capture and Storage Program (Carbon Program). The National Energy Technology Laboratory awarded 46 cooperative agreements to a variety of demonstration and research and development projects. The agreements required substantial involvement by Federal project managers and relied on recipients to share in the investments needed to complete the projects. The audit found that the Department had not always effectively

133

Audit Report: OAS-RA-13-26 | Department of Energy  

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

6 6 Audit Report: OAS-RA-13-26 June 19, 2013 Department of Energy's Interconnection Transmission Planning Program Funded through the American Recovery and Reinvestment Act of 2009 Under the American Recovery and Reinvestment Act of 2009 (Recovery Act), the Department of Energy's (Department) Office of Electricity Delivery and Energy Reliability received about $4.5 billion to modernize the electric grid. About $80 million of this funding was designated for the Interconnection Transmission Planning Program to facilitate the development or strengthening of capabilities in each interconnection. The transmission infrastructure in the United States is separated into three distinct electrical networks, or interconnections - the Western, Eastern, and Texas interconnections. The Department allocated $60 million to five

134

Audit Report: OAS-RA-13-31 | Department of Energy  

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

31 31 Audit Report: OAS-RA-13-31 September 27, 2013 The Department of Energy's Hydrogen and Fuel Cells Program The Department of Energy spent approximately $1 billion over the last 5 years on Hydrogen and Fuel Cells Program activities implemented through various projects at Federal laboratories, universities, non-profit institutions, Government agencies and industry participants. The Department also provided an additional $42 million in American Recovery and Reinvestment Act of 2009 funding to accelerate the commercialization and deployment of fuel cells. We found the Department had not always effectively managed the financial aspects of the Hydrogen and Fuel Cells Program. For instance, we found that the Department approved and reimbursed unsupported and/or unallowable

135

Audit Report: OAS-RA-12-12 | Department of Energy  

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

2 2 Audit Report: OAS-RA-12-12 May 22, 2012 The Department of Energy's Clean Cities Alternative Fuel Vehicle Grant Program Funded under the American Recovery and Reinvestment Act Under the American Recovery and Reinvestment Act of 2009 (Recovery Act), the Department of Energy's (Department) Clean Cities Alternative Fuel Vehicle Grant Program (Clean Cities Program) received nearly $300 million, or 30 times its Fiscal Year 2009 funding of approximately $10 million. From this amount, the Department awarded grants ranging from $5 million to $15 million to 25 recipients, including Clean Cities coalitions and other entities that partnered with coalitions. Clean Cities coalitions are volunteer groups that join with public and private sector organizations to promote alternative and renewable fuels, fuel economy measures and new

136

Examination Report: OAS-RA-12-05 | Department of Energy  

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

2-05 2-05 Examination Report: OAS-RA-12-05 January 20, 2012 Saratoga County Economic Opportunity Council, Inc. -Weatherization Assistance Program Funds Provided by the American Recovery and Reinvestment Act of 2009 Under the American Recovery and Reinvestment Act of 2009 (Recovery Act), the Department of Energy's (Department) Weatherization Assistance Program (Weatherization Program) received $5 billion to increase the energy efficiency of dwellings owned or occupied by low-income persons. Subsequently, the Department awarded approximately $394 million in a Recovery Act weatherization grant to the State of New York's Division of Housing and Community Renewal. The State of New York allocated about $6.9 million of its grant to Saratoga County Economic Opportunity Council, Inc.

137

Examination Report: OAS-RA-11-20 | Department of Energy  

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

0 0 Examination Report: OAS-RA-11-20 September 30, 2011 People's Equal Action and Community Effort, Inc. -Weatherization Assistance Program Funds Provided by the American Recovery and Reinvestment Act of 2009 The attached report presents the results of an examination of the People's Equal Action and Community Effort, Inc. (PEACE), Weatherization Assistance Program (Weatherization Program) under the American Recovery and Reinvestment Act of 2009 (Recovery Act). The Office of Inspector General (OIG) contracted with an independent certified public accounting firm, Otis and Associates, PC (Otis), to express an opinion on the agency's compliance with Federal and State laws, regulations and program guidelines applicable to the Weatherization Program. The Recovery Act was enacted to stimulate the economy and encourage

138

Audit Report: OAS-RA-12-13 | Department of Energy  

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

3 3 Audit Report: OAS-RA-12-13 June 25, 2012 The Department of Energy's Weatherization Assistance Program under the American Recovery and Reinvestment Act in the State of Ohio Under the American Recovery and Reinvestment Act of 2009, the Department of Energy's Weatherization Assistance Program (Weatherization Program) received $5 billion to increase the energy efficiency of dwellings owned or occupied by low-income persons. The Department awarded a 3-year, $267 million Recovery Act weatherization grant to the State of Ohio's (Ohio) Department of Development. Ohio had not always managed its Weatherization Program efficiently and effectively. We identified weaknesses that impacted Ohio's ability to meet the objectives of the Weatherization Program and the Recovery Act.

139

Audit Report: OAS-RA-10-06 | Department of Energy  

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

6 6 Audit Report: OAS-RA-10-06 April 1, 2010 Accounting and Reporting for the American Recovery and Reinvestment Act by the Department of Energy's Funding Recipients The American Recovery and Reinvestment Act of 2009 (Recovery Act) was established to jumpstart the U.S. economy, create or save millions of jobs, and invest in the Nation's energy future. The Department of Energy received approximately $37 billion through the Recovery Act to support a variety of science, energy and environmental initiatives. The Office of Management and Budget (OMB) issued guidance for carrying out stimulus-related activities which requires, among other things, that recipients ensure funds provided by the Recovery Act are clearly distinguishable from non-Recovery Act funds in all reporting systems and that recipients' actions are transparent to

140

Examination Report: OAS-RA-13-11 | Department of Energy  

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

1 1 Examination Report: OAS-RA-13-11 February 19, 2013 Fresno County Economic Opportunities Commission Weatherization Assistance Program Funds Provided by the American Recovery and Reinvestment Act of 2009 As part of the American Recovery and Reinvestment Act of 2009 (Recovery Act) the Weatherization Assistance Program (Weatherization Program) received $5 billion to reduce energy consumption for low-income households through energy efficient upgrades. The State of California received $186 million in Recovery Act Weatherization Program funding, of which $11.2 million was allocated to the Fresno County Economic Opportunities Commission (Agency) to weatherize 5,374 homes. The State of California Department of Community Services and Development (State) was responsible

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


141

Audit Report: OAS-RA-L-11-01 | Department of Energy  

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

1 1 Audit Report: OAS-RA-L-11-01 November 10, 2010 Management of the Plutonium Finishing Plant Closure Project The Department of Energy's (Department) Richland Operations Office (Richland) awarded a contract, effective October 1, 2008, to CH2M HILL Plateau Remediation Company (CHPRC) to remediate the Hanford Site's Central Plateau. Part of the contract's scope includes completion of the Plutonium Finishing Plant (PFP) Closure Project - a major decontamination and demolition project of an industrial complex consisting of more than 60 buildings. CHPRC's contract included expectations to: Provide safe and compliant storage of special nuclear material at PFP until it has been removed from the PFP complex; Operate and maintain the PFP facilities and associated waste sites, structures, systems and equipment in a safe,

142

Audit Report: OAS-RA-11-17 | Department of Energy  

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

7 7 Audit Report: OAS-RA-11-17 September 19, 2011 The Department of Energy's Weatherization Assistance Program under the American Recovery and Reinvestment Act in the State of Tennessee The Department of Energy's (Department) Weatherization Assistance Program (Weatherization Program) received $5 billion under the American Recovery and Reinvestment Act of 2009 to improve the energy efficiency of the homes of low-income individuals, of which the State of Tennessee received a three-year Weatherization Program grant of $99 million. We initiated this audit to determine if Tennessee had adequate safeguards in place to ensure that the Weatherization Program was managed efficiently and effectively. We found that Tennessee, while achieving its production goals, had not

143

Audit Report: OAS-RA-10-02 | Department of Energy  

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

2 2 Audit Report: OAS-RA-10-02 December 3, 2009 Management Alert on the Department's Monitoring of the Weatherization Assistance Program in the State of Illinois Under the American Recovery and Reinvestment Act of 2009 (Recovery Act), the Department of Energy's Weatherization Assistance Program received $5 billion to improve the energy efficiency of homes owned or occupied by low income persons, reduce their total residential expenditures, and improve their health and safety. Since the Recovery Act was enacted in February 2009, the Department has awarded weatherization grants to every state, the District of Columbia and five territories. Because of the unprecedented level of funding and the risks associated with spending vast amounts of money in a relatively short period of time, the Office of Inspector General

144

Audit Report: OAS-RA-L-11-13 | Department of Energy  

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

3 3 Audit Report: OAS-RA-L-11-13 September 30, 2011 The 12 GeV CEBAF Upgrade Project at Thomas Jefferson National Accelerator Facility In September 2008, the Department of Energy's (Department) Office of Science approved a construction project to double the electron beam energy of the Continuous Electron Beam Accelerator Facility at the Thomas Jefferson National Accelerator Facility (Jefferson Laboratory) from 6 to 12 billion electron volts (GeV). We found that the 12 GeV Upgrade Project (Upgrade Project) generally complied with the American Recovery Act and Reinvestment Act of 2009 requirements we tested and was, for the most part, on schedule. However, we identified several opportunities to strengthen project monitoring and control. Specifically, we found that: 1)

145

Audit Report: OAS-RA-L-11-04 | Department of Energy  

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

L-11-04 L-11-04 Audit Report: OAS-RA-L-11-04 March 2, 2011 The Department's Infrastructure Modernization Projects under the Recovery and Reinvestment Act of 2009 The American Recovery and Reinvestment Act of 2009 (Recovery Act) was enacted on February 17, 2009. The goals of the Recovery Act are to retain or create jobs, increase economic efficiency, and invest in infrastructure that will provide long-term economic benefits. The Recovery Act provided just over $36 billion for the Department of Energy (Department), including $198 million to be used by the Office of Science (Science) for infrastructure modernization initiatives. According to Science officials, modernization was needed to many Department laboratories, offices, and other facilities due to their age. Science's Recovery Act Infrastructure

146

Audit Letter Report: OAS-RA-L-10-09 | Department of Energy  

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

9 9 Audit Letter Report: OAS-RA-L-10-09 August 27, 2010 Office of Science's Energy Frontier Research Centers In 2008, the Department of Energy's (Department) Office of Science (Science) issued a Funding Opportunity Announcement seeking applications from the scientific community for the establishment of Energy Frontier Research Centers (EFRCs). The purpose of the EFRCs is to integrate the talent and expertise of leading scientists to accelerate the rate of scientific breakthroughs needed to create advanced energy technologies for the 21st century. The EFRCs are to pursue the fundamental understanding necessary to meet the global need for abundant, clean, and economical energy. The EFRC research areas include solar energy, electricity storage, materials sciences, biofuels, advanced nuclear systems, and carbon capture

147

Audit Report: OAS-RA-10-10 | Department of Energy  

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

0 0 Audit Report: OAS-RA-10-10 May 25, 2010 Waste Processing and Recovery Act Acceleration Efforts for Contact-Handled Transuranic Waste at the Hanford Site The Department of Energy's Office of Environmental Management's (EM), Richland Operations Office (Richland), is responsible for disposing of the Hanford Site's (Hanford) transuranic (TRU) waste, including nearly 12,000 cubic meters of radioactive contact-handled TRU wastes. Prior to disposing of this waste at the Department's Waste Isolation Pilot Plant (WIPP), Richland must certify that it meets WIPP's waste acceptance criteria. To be certified, the waste must be characterized, screened for prohibited items, treated (if necessary) and placed into a satisfactory disposal container. In a February 2008 amendment to an existing Record of Decision (Decision),

148

Audit Report: OAS-RA-L-12-02 | Department of Energy  

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

2 2 Audit Report: OAS-RA-L-12-02 January 12, 2012 Recovery Act Funded Projects at the Lawrence Berkeley National Laboratory In February 2009, the President signed the American Recovery and Reinvestment Act of 2009 (Recovery Act) into law. The goals of the Recovery Act were to retain and create jobs, increase economic efficiency, and invest in infrastructure that would provide long-term economic benefits. The Department of Energy's (Department) Office of Science received $1.6 billion through the Recovery Act which it used to invest in various projects. The Lawrence Berkeley National Laboratory (Berkeley) received approximately $333.4 million in Recovery Act funds, primarily from the Department for infrastructure upgrades and a broad array of research efforts. These funds were allocated to 130

149

Audit Report: OAS-RA-10-08 | Department of Energy  

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

8 8 Audit Report: OAS-RA-10-08 April 27, 2010 The Department of Energy's Program to Assist Federal Buyers in the Purchasing of Energy Efficient Products The American Recovery and Reinvestment Act of 2009 (Recovery Act) established a series of energy-related goals, one of which was to make Federal facilities more energy efficient. The Department of Energy (Department) plays an integral part in this process. The Department's Federal Energy Management Program (FEMP), established in 1973, helps Federal agencies achieve energy efficiency and conservation goals by developing and publishing energy efficiency specifications. According to FEMP, Federal agencies spend approximately $10 billion a year to purchase energy consuming products and have the opportunity to save well over $200

150

Audit Letter Report: OAS-RA-L-10-04 | Department of Energy  

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

4 4 Audit Letter Report: OAS-RA-L-10-04 April 27, 2010 Progress in Implementing the Advanced Batteries and Hybrid Components Program under the American Recovery and Reinvestment Act The American Recovery and Reinvestment Act of 2009 (Recovery Act) was enacted to stimulate the U.S. economy, create jobs and make infrastructure investments in energy and other areas. The Department of Energy's (Department) Advanced Battery and Hybrid Components Program (Program) received almost $2 billion to support the construction of U.S. based manufacturing plants to produce batteries and electric drive components. While the Department had funded some vehicle battery research in the past, this Program adds a new manufacturing component that the Department must administer. The Program is managed by the Office of Energy Efficiency and

151

Audit Report: OAS-RA-12-04 | Department of Energy  

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

4 4 Audit Report: OAS-RA-12-04 January 20, 2012 The Department's Management of the Smart Grid Investment Grant Program The Energy Independence and Security Act of 2007 charged the Department of Energy (Department) with establishing the Smart Grid Investment Grant (SGIG) program. More recently, the American Recovery and Reinvestment Act of 2009 (Recovery Act) provided the Department's Office of Electricity Delivery and Energy Reliability with $3.5 billion to fund the SGIG program and to assist in modernizing the Nation's power grid. The SGIG program was to facilitate the installation of state-of-the-art information technologies and, ultimately, improve grid reliability and enable consumers to reduce the amount of energy used. The program required that the

152

Examination Report: OAS-RA-13-18 | Department of Energy  

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

8 8 Examination Report: OAS-RA-13-18 April 18, 2013 Travis County Health & Human Services and Veterans Services Weatherization Assistance Program Funds Provided by the ARRA of 2009 As part of the American Recovery and Reinvestment Act of 2009 (Recovery Act), the Weatherization Assistance Program (Weatherization Program) received $5 billion to reduce energy consumption for low-income households through energy efficient upgrades. The State of Texas received $327 million in Weatherization Program Recovery Act grant funding, of which $8.9 million was allocated to Travis County Health & Human Services and Veterans Services (Travis County) to weatherize approximately 1,060 homes. The State of Texas' Department of Housing and Community Affairs (Texas) was

153

Examination Report: OAS-RA-13-21 | Department of Energy  

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

1 1 Examination Report: OAS-RA-13-21 May 14, 2013 South Carolina Energy Office - Energy Efficiency and Conservation Block Grant Program Funds Provided by the American Recovery and Reinvestment Act of 2009 The American Recovery and Reinvestment Act of 2009 (Recovery Act) was enacted to promote economic prosperity through job creation and encourage investment in the Nation's energy future. As part of the Recovery Act, the Energy Efficiency and Conservation Block Grant (EECBG) Program received about $3.2 billion to assist in implementing strategies to reduce fossil fuel emissions, decrease total energy use of local governments, improve energy efficiency and create jobs. The South Carolina Energy Office (SCEO) is responsible for operating the State of South Carolina's energy efficiency programs and for administering

154

Examination Report: OAS-RA-13-17 | Department of Energy  

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

7 7 Examination Report: OAS-RA-13-17 March 28, 2013 Community Action Partnership of San Bernardino County - Weatherization Assistance Program Funds Provided by the American Recovery and Reinvestment Act of 2009 As part of the American Recovery and Reinvestment Act of 2009 (Recovery Act), the Weatherization Assistance Program (Weatherization Program) received $5 billion to reduce energy consumption for low-income households through energy efficient upgrades. The State of California received $186 million in Recovery Act Weatherization Program funding, of which $7.7 million was allocated to the Community Action Partnership of San Bernardino County (San Bernardino) to weatherize 1,931 homes. The State of California Department of Community Services and Development (California)

155

Examination Report: OAS-RA-11-21 | Department of Energy  

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

1 1 Examination Report: OAS-RA-11-21 September 30, 2011 Action for a Better Community, Inc. - Weatherization Assistance Program Funds Provided by the American Recovery and Reinvestment Act of 2009 Under the American Recovery and Reinvestment Act of 2009 (Recovery Act), the Department of Energy's (Department) Weatherization Assistance Program (Weatherization Program) received $5 billion to increase the energy efficiency of dwellings owned or occupied by low-income persons. Subsequently, the Department awarded approximately $394.6 million in a Recovery Act weatherization grant to the State of New York's Division of Housing and Community Renewal. The State of New York allocated about $7.45 million of its grant to Action for a Better Community, Inc. (ABC), to

156

Audit Report: OAS-RA-11-05 | Department of Energy  

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

5 5 Audit Report: OAS-RA-11-05 March 22, 2011 The Department of Energy's Geothermal Technologies Programunder the American Recovery and Reinvestment Act Under the American Recovery and Reinvestment Act of 2009 (Recovery Act), the Department of Energy's Geothermal Technologies Program received $400 million to promote the exploration and development of new geothermal fields and innovative research into advanced geothermal technologies. This funding represents an almost ten-fold increase over the $44 million originally appropriated to the Geothermal Technologies Program for 2009. As of January 2011, the Department had awarded $368 million in financial assistance agreements for 135 geothermal technologies projects, with about $68 million having been expended. Recovery Act funding supports geothermal projects

157

Audit Report: OAS-RA-10-07 | Department of Energy  

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

7 7 Audit Report: OAS-RA-10-07 April 9, 2010 Management Alert on Environmental Management's Select Strategy for Disposition of Savannah River Site Depleted Uranium Oxides The Administration and the Congress, through policy statements and passage of the American Recovery and Reinvestment Act of 2009 (Recovery Act), have signaled that they hope that proactive actions by agency Inspectors General will help ensure that Federal Recovery Act activities are transparent, effective and efficient. In that context, the purpose of this management alert is to share with you concerns that have been raised to the Office of Inspector General regarding the planned disposition of the Savannah River Site's (SRS) inventory of Depleted Uranium (DU) oxides. This inventory, generated as a by-product of the nuclear weapons production process and

158

Audit Report: OAS-RA-13-28 | Department of Energy  

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

8 8 Audit Report: OAS-RA-13-28 July 18, 2013 Costs Incurred by Selected Tribal Energy Efficiency and Conservation Block Grant Recipients Under the American Recovery and Reinvestment Act of 2009, the Department of Energy's (Department) Energy Efficiency and Conservation Block Grant (EECBG) Program received $3.2 billion to improve energy efficiency and reduce energy use and fossil fuel emissions. The Department's Office of Energy Efficiency and Renewable Energy allocated about $2.7 billion of the funds using a population-driven formula to over 2,000 entities including states and territories, cities and counties, and Native American tribes. The Navajo Tribal Utility Authority (NTUA), the Cherokee Nation, Muscogee Creek Nation, Choctaw Nation of Oklahoma, and Chickasaw Nation received the

159

Audit Report: OAS-RA-12-11 | Department of Energy  

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

1 1 Audit Report: OAS-RA-12-11 May 10, 2012 The Department of Energy's Transportation Electrification Program The Department of Energy (Department) established the Transportation Electrification Program (Program) to demonstrate and evaluate the deployment of plug-in hybrid vehicles and their associated infrastructure needs. Funded by the American Recovery and Reinvestment Act of 2009, the Program provided about $400 million to 18 grant recipients-12 non-profit entities and 6 for-profit entities. The grants are intended to further the development of the plug-in hybrid electric vehicle industry in the United States; ensure achievement of the President's goal to have one million of these vehicles on the road by 2015; and, create thousands of jobs. We found that the Department could improve its financial management of the

160

Examination Report: OAS-RA-11-19 | Department of Energy  

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

19 19 Examination Report: OAS-RA-11-19 September 29, 2011 Cuyahoga County of Ohio Department of Development - Weatherization Assistance Program Funds Provided by the American Recovery and Reinvestment Act of 2009 Under the American Recovery and Reinvestment Act of 2009 (Recovery Act), the Department of Energy's (Department) Weatherization Assistance Program (Weatherization Program) received $5 billion to increase the energy efficiency of dwellings owned or occupied by low-income persons. Subsequently, the Department awarded a 3-year, $267 million Recovery Act weatherization grant to the State of Ohio's Department of Development (Ohio or State). The State of Ohio allocated about $9.4 million of its grant to the Cuyahoga County of Ohio Department of Development (County) to

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


161

Special Report: OAS-RA-12-03 | Department of Energy  

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

03 03 Special Report: OAS-RA-12-03 January 18, 2012 Lessons Learned/Best Practices during the Department of Energy's Implementation of the American Recovery and Reinvestment Act of 2009 The American Recovery and Reinvestment Act of 2009 (Recovery Act) was signed into law on February 17, 2009 as a way to jumpstart the U.S. economy, create or save millions of jobs, spur technological advances in science and health, and invest in the Nation's energy future. As part of the Recovery Act, the Department of Energy (Department) received more than $35 billion to support a number of science, energy, and environmental initiatives. In addition, the Department noted that its authority to make or guarantee energy-related loans increased to as much as $52 billion. From an Inspector General perspective, the intensive ramp-up and execution

162

Audit Report: OAS-RA-11-03 | Department of Energy  

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

3 3 Audit Report: OAS-RA-11-03 November 30, 2010 The Department of Energy's Weatherization Assistance Program under the American Recovery and Reinvestment Act for the City of Phoenix - Agreed-Upon Procedures The attached report presents the results of an agreed-upon procedures review of the Department of Energy's (Department) Weatherization Assistance Program in the City of Phoenix, Arizona, under the American Recovery and Reinvestment Act of 2009 (Recovery Act). The Office of Inspector General (OIG) engaged an independent certified public accounting firm, Lopez and Company, to perform the agreed-upon procedures for Phoenix, a sub-recipient of the Department's Recovery Act Weatherization funding for the State of Arizona. The Recovery Act was enacted to promote economic prosperity

163

Examination Report: OAS-RA-13-04 | Department of Energy  

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

4 4 Examination Report: OAS-RA-13-04 November 8, 2012 The Department of Energy's American Recovery and Reinvestment Act Energy Efficiency and Conservation Block Grant Program - Efficiency Maine Trust The American Recovery and Reinvestment Act of 2009 (Recovery Act) was enacted to promote economic prosperity through job creation and encourage investment in the Nation's energy future. As part of the Recovery Act, the Energy Efficiency and Conservation Block Grant (EECBG) Program received about $3.2 billion to assist in implementing strategies to reduce fossil fuel emissions, decrease total energy use of local governments, improve energy efficiency and create jobs. The State of Maine established the Efficiency Maine Trust (Trust) to take over responsibility for all

164

Audit Report: OAS-RA-11-07 | Department of Energy  

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

7 7 Audit Report: OAS-RA-11-07 June 6, 2011 The Department of Energy's Weatherization Assistance Program Funded under the American Recovery and Reinvestment Act for the State of Wisconsin The Department of Energy's Weatherization Assistance Program (Weatherization Program) received $5 billion under the American Recovery and Reinvestment Act of 2009 (Recovery Act) to improve the energy efficiency of homes, multi-family rental units and mobile homes owned or occupied by low-income persons. Subsequently, the Department awarded a 3-year Weatherization Program grant for $141.5 million to the State of Wisconsin (Wisconsin). This grant provided an eight-fold increase in funds available to Wisconsin for weatherization compared to the $15 million that was authorized in Fiscal Year (FY) 2009. Wisconsin's Department of

165

Audit Report: OAS-RA-L-12-03 | Department of Energy  

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

3 3 Audit Report: OAS-RA-L-12-03 January 26, 2012 The Department of Energy's American Recovery and Reinvestment Act - Arizona State Energy Program The Department of Energy (Department) allocated $55.4 million in SEP funds under the American Recovery and Reinvestment Act of 2009 (Recovery Act) to the State of Arizona (Arizona) in support of energy priorities through the State Energy Program (SEP). These funds were allocated to grants for energy savings and renewable energy projects, such as retrofits for schools, public buildings and non-profit organizations, and renewable energy products manufactured in Arizona. We found that Arizona had developed a number of processes and controls to accomplish the objectives of the SEP and the Recovery Act. For example, Arizona established a plan

166

Audit Letter Report: OAS-RA-L-10-02 | Department of Energy  

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

2 2 Audit Letter Report: OAS-RA-L-10-02 April 16, 2010 Audit of Fermi National Accelerator Laboratory's NOvA Project The NuMI Off-Axis electron neutrino (ve) Appearance (NOvA) experiment is a neutrino physics research project conducted by the Office of Science's Fermi National Accelerator Laboratory (Fermilab). The goal of the NOvA experiment is to advance the understanding of neutrino particles. Fermilab, in coordination with the University of Minnesota (University), must complete an accelerator and detector system needed for the experiment. Fermilab is upgrading its accelerator complex to increase beam power and constructing a 220 ton "Near Detector" that will monitor the neutrino beam as it leaves Fermilab. The University is responsible for constructing a

167

Examination Report: OAS-RA-13-12 | Department of Energy  

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

2 2 Examination Report: OAS-RA-13-12 February 19, 2013 City of Los Angeles - Energy Efficiency and Conservation Block Grant Program Funds Provided by the American Recovery and Reinvestment Act of 2009 As part of the American Recovery and Reinvestment Act of 2009 (Recovery Act), the Energy Efficiency and Conservation Block Grant (EECBG) Program received $3.2 billion to develop, promote, implement and manage energy efficiency and conservation projects and programs designed to reduce fossil fuel emissions, reduce total energy use of the eligible entities, and improve energy efficiency in the transportation, building and other appropriate sectors. In July 2009, the Department of Energy (Department) awarded the City of Los Angeles (City) a 3-year formula grant of $37

168

The Department's Management of the Smart Grid Investment Grant Program, OAS-RA-12-04  

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

Management of Management of the Smart Grid Investment Grant Program OAS-RA-12-04 January 2012 Department of Energy Washington, DC 20585 January 20, 2012 MEMORANDUM FOR THE SECRETARY FROM: Gregory H. Friedman Inspector General SUBJECT: INFORMATION: Audit Report on "The Department's Management of the Smart Grid Investment Grant Program" INTRODUCTION AND OBJECTIVE The Energy Independence and Security Act of 2007 charged the Department of Energy with establishing the Smart Grid Investment Grant (SGIG) program. More recently, the American Recovery and Reinvestment Act of 2009 (Recovery Act) provided the Department's Office of Electricity Delivery and Energy Reliability (OE) with $3.5 billion to fund the SGIG program and to assist in modernizing the Nation's power grid. The SGIG program was to facilitate the

169

Audit Report: OAS-RA-L-11-11 | Department of Energy  

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

1 1 Audit Report: OAS-RA-L-11-11 September 23, 2011 The Department of Energy's Energy Efficiency and Conservation Block Grant Program Funded under the American Recovery and Reinvestment Act for the State of Pennsylvania Under the American Recovery and Reinvestment Act of 2009 (Recovery Act), the Department of Energy's (Department) Energy Efficiency and Conservation Block Grant Program (Program) received $3.2 billion in funding to help U.S. cities, counties and states to develop, promote, implement and manage energy efficiency and conservation projects. Subsequently, the Department awarded a $23.6 million formula grant to the State of Pennsylvania's (State) Department of Environmental Protection (DEP). Of the $23.6 million awarded, the State retained about $1.2 million in funding for

170

The Hydrogen Energy California Project, OAS-RA-13-22  

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

Hydrogen Energy California Hydrogen Energy California Project OAS-RA-13-22 June 2013 Department of Energy Washington, DC 20585 June 6, 2013 MEMORANDUM FOR THE ACTING DEPUTYASSISTANT SECRETARY FOR CLEAN COAL DIRECTOR FOR POLICY, OFFICE OF ACQUISITION AND PROJECT MANAGEMENT FROM: David Sedillo Director, Western Audits Division Office of Inspector General SUBJECT: INFORMATION: Audit Report on "The Hydrogen Energy California Project" BACKGROUND Under the American Recovery and Reinvestment Act of 2009, the Department of Energy's (Department) Office of Fossil Energy received $3.4 billion to focus on the research, development and deployment of technologies to use coal more cleanly and efficiently. In September 2009, the Department approved a cooperative agreement award with a Government contribution of $308

171

Examination Report: OAS-RA-13-03 | Department of Energy  

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

3 3 Examination Report: OAS-RA-13-03 October 17, 2012 Community Action Partnership of Orange County - Weatherization Assistance Program Funds Provided by the American Recovery and Reinvestment Act of 2009 As part of the American Recovery and Reinvestment Act of 2009 (Recovery Act), the Weatherization Assistance Program (Weatherization Program) received $5 billion to reduce energy consumption for low-income households through energy efficient upgrades. The State of California received $186 million in Recovery Act Weatherization Program funding, of which $7.3 million was allocated to the Community Action Partnership of Orange County (Agency) to weatherize 2,342 homes. The State of California Department of Community Services and Development was responsible for administering

172

Audit Report: OAS-RA-L-13-02 | Department of Energy  

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

2 2 Audit Report: OAS-RA-L-13-02 December 3, 2012 The Department's Implementation of Financial Incentive Programs under the Energy Efficiency and Conservation Block Grant Program The Department of Energy's (Department) Energy Efficiency and Conservation Block Grant (EECBG) Program, funded for the first time by the American Recovery and Reinvestment Act of 2009 (Recovery Act), was intended to help US cities, counties and states develop, promote, implement and manage energy efficiency and conservation projects. The EECBG Program received $3.2 billion in Recovery Act funding for competitive and formula grants. Of the $3.2 billion, approximately $284 million was designated by EECBG recipients for financial incentive programs. The Department had taken a number of positive steps to implement and administer EECBG financial

173

Audit Report: OAS-RA-13-25 | Department of Energy  

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

5 5 Audit Report: OAS-RA-13-25 June 18, 2013 The Department of Energy's Weatherization Assistance Program Funded under the American Recovery and Reinvestment Act for the State of Michigan Under the American Recovery and Reinvestment Act of 2009 (Recovery Act), the Department of Energy's (Department) Weatherization Assistance Program (Weatherization Program) received $5 billion to improve the energy efficiency of residences owned or occupied by low-income persons. The Department subsequently awarded a Recovery Act Weatherization Program grant of over $250 million to the State of Michigan, which included an additional Recovery Act award of nearly $7 million of Sustainable Energy Resources for Consumers funding. This grant provided roughly 10 times the $26 million

174

Audit Report: OAS-RA-11-08 | Department of Energy  

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

8 8 Audit Report: OAS-RA-11-08 April 22, 2011 Management Alert on Planned Actions Related to the National Energy Technology Laboratory's Simulation-Based Engineering User Center The Department of Energy's National Energy Technology Laboratory (NETL) initiated plans to utilize $20 million of American Recovery and Reinvestment Act of 2009 funds to develop the Simulation-Based Engineering User Center (User Center) - part of the Carbon Capture Simulation Initiative program. According to project documentation, $3 million of the total cost will be dedicated to acquiring and installing a Performance Optimized Data Center (POD) at NETL's Morgantown, West Virginia, site. And, the remaining funds will be spent equipping and supporting the POD with a high performance computing system. In March 2011, NETL was given final

175

Special Report: OAS-RA-09-01 | Department of Energy  

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

09-01 09-01 Special Report: OAS-RA-09-01 March 20, 2009 Special Report on "The American Recovery and Reinvestment Act at the Department of Energy The American Recovery and Reinvestment Act of 2009 (Recovery Act) was signed into law on February 17, 2009, as a way to jumpstart the U.S. economy, create or save millions of jobs, spur technological advances in science and health,and invest in the Nation's energy future. This national effort will require an unprecedented level of transparency and accountability to ensure that U.S. citizens know where their taxdollars are going and how they are being spent. As part of the Recovery Act, the Department of Energy will receive more than $38 billion to support a number of science, energy, and environmental initiatives. Additionally, the

176

Chemical vapor deposition of ZrC in small bore carbon-composite tubes  

SciTech Connect

Process conditions are described for the chemical vapor deposition of ZrC from ZrCl/sub 4/--CH/sub 4/--HCl--H/sub 2/--Ar vapor over the temperature range 1320 to 1775 deg K. From an analysis of the process conditions (initial composition of coating gas, axial temperature profile along the tubes, total pressure, and length of deposition time), the subsequent ZrC coat thickness profiles and thermodynamic data, an equation expressing the variation of the axial rate of ZrC deposition is derived. This expression can be used for the estimation of process conditions required to yield a specified ZrC coat profile. Variations of the chlorine and oxygen contents, lattice pararmeter, microstructure of the ZrC deposit and thermal expansion coefficient as a function of deposition temperature are described. (11 figures, 3 tables) (auth)

Wallace, T.C.

1973-01-01T23:59:59.000Z

177

Atomic-layer-deposited Al2O3 and HfO2 on GaN: A comparative study on interfaces and electrical characteristics  

Science Conference Proceedings (OSTI)

Al"2O"3, HfO"2, and composite HfO"2/Al"2O"3 films were deposited on n-type GaN using atomic layer deposition (ALD). The interfacial layer of GaON and HfON was observed between HfO"2 and GaN, whereas the absence of an interfacial layer at Al"2O"3/GaN ... Keywords: Al2O3, Atomic-layer-deposition (ALD), GaN, HfO2, High k dielectric, MOS

Y. C. Chang; M. L. Huang; Y. H. Chang; Y. J. Lee; H. C. Chiu; J. Kwo; M. Hong

2011-07-01T23:59:59.000Z

178

Diffraction Analysis of Ball Milled Platinum Based Powders (Pt-ZrO2)  

Science Conference Proceedings (OSTI)

... series of powder samples with different amount of ZrO2 and ball milling time were examined by the synchrotron radiation at Brookhaven National Laboratory.

179

Continuous Casting and Product Characterization of Al-Mg-Sc-Zr ...  

Science Conference Proceedings (OSTI)

These improvements lead quaternary Al-Mg-Sc-Zr alloys to be important ... Frequency Modulation Effect on the Solidification of Alloy 718 Fusion Zone.

180

Oxidation Resistance of Zr- and Ti- Based Bulk Metallic Glasses in ...  

Science Conference Proceedings (OSTI)

About this Abstract. Meeting, 2012 TMS Annual Meeting & Exhibition. Symposium , Bulk Metallic Glasses IX. Presentation Title, Oxidation Resistance of Zr- and...

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While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

Study on Heteropolyacids/Ti/Zr Mixed in the Inorganic Composites ...  

Science Conference Proceedings (OSTI)

Symposium, Energy Conversion/Fuel Cells. Presentation Title, Study on Heteropolyacids/Ti/Zr Mixed in the Inorganic Composites for Fuel Cell Electrolytes.

182

g-factor of the 2{sup+}{sub{1} state of {sup179}Hf.  

SciTech Connect

The g factor of the 2{sub 1}{sup +} state of {sup 172}Hf was measured using the perturbed angular correlation technique in a static external magnetic field. The result, g(2{sub 1}{sup +}) = 0.25(5), is discussed in relation to the systematics of the previously reported g factors in the Hf isotopes and compared with the predictions of several models. An interesting outcome of the analysis presented in this paper is the agreement between the calculated g factors within the interacting boson approximation (IBA) and the results of a large-scale shell model calculation. This agreement supports the emphasis in the IBA on the valence space. The undershooting of the empirical g factors near midshell in both models suggests that they underestimate the role of the saturation of collectivity, which is explicitly incorporated into a phenomenological model that agrees better with the data.

Berant, Z.; Oster, E.; Wolf, A.; Casperson, R. J.; Werner, V.; McCutchan, E. A. (Physics); (Yale Univ.); (Nuclear Research Center Negev); (Rutgers Univ.); (Clark Univ.); (Univ. of Richmond); (Univ. of Surrey); (Rhodes Coll.); (Technische Univ. Darmstadt); (ENS CACHAN)

2009-01-01T23:59:59.000Z

183

g factor of the 2{sub 1}{sup +} state of {sup 172}Hf  

Science Conference Proceedings (OSTI)

The g factor of the 2{sub 1}{sup +} state of {sup 172}Hf was measured using the perturbed angular correlation technique in a static external magnetic field. The result, g(2{sub 1}{sup +})=0.25(5), is discussed in relation to the systematics of the previously reported g factors in the Hf isotopes and compared with the predictions of several models. An interesting outcome of the analysis presented in this paper is the agreement between the calculated g factors within the interacting boson approximation (IBA) and the results of a large-scale shell model calculation. This agreement supports the emphasis in the IBA on the valence space. The undershooting of the empirical g factors near midshell in both models suggests that they underestimate the role of the saturation of collectivity, which is explicitly incorporated into a phenomenological model that agrees better with the data.

Berant, Z.; Wolf, A. [Wright Nuclear Structure Laboratory, Yale University, New Haven, Connecticut 06520 (United States); Nuclear Research Center Negev, Beer-Sheva 84190 (Israel); Oster, E. [Nuclear Research Center Negev, Beer-Sheva 84190 (Israel); Casperson, R. J.; Werner, V.; Heinz, A.; Casten, R. F.; Terry, J. R.; Winkler, R.; Williams, E.; Qian, J.; Schmidt, A.; Smith, M. K.; Ahn, T. [Wright Nuclear Structure Laboratory, Yale University, New Haven, Connecticut 06520 (United States); Gurdal, G. [Rutgers University, New Brunswick, New Jersey 08903 (United States); McCutchan, E. A. [Physics Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States); Brenner, D. S. [Wright Nuclear Structure Laboratory, Yale University, New Haven, Connecticut 06520 (United States); Chemistry Department, Clark University, Worcester, Massachusetts 01610 (United States); Beausang, C. W. [Physics Department, University of Richmond, Richmond, Virginia 23173 (United States); Regan, P. H. [Department of Physics, University of Surrey, Guildford, GU2 7XH (United Kingdom); Ross, T. [Physics Department, University of Richmond, Richmond, Virginia 23173 (United States); Department of Physics, University of Surrey, Guildford, GU2 7XH (United Kingdom)] (and others)

2009-11-15T23:59:59.000Z

184

Current Patterns on the West Florida Shelf from Joint Self-Organizing Map Analyses of HF Radar and ADCP Data  

Science Conference Proceedings (OSTI)

To assess the spatial structures and temporal evolutions of distinct physical processes on the West Florida Shelf, patterns of ocean current variability are extracted from a joint HF radar and ADCP dataset acquired from August to September 2003 ...

Yonggang Liu; Robert H. Weisberg; Lynn K. Shay

2007-04-01T23:59:59.000Z

185

The Influence of Fetch on the Response of Surface Currents to Wind Studied by HF Ocean Surface Radar  

Science Conference Proceedings (OSTI)

The momentum transfer from wind to sea generates surface currents through both the wind shear stress and the Stokes drift induced by waves. This paper addresses issues in the interpretation of HF radar measurements of surface currents and ...

Yadan Mao; Malcolm L. Heron

2008-05-01T23:59:59.000Z

186

Tests of Long-Range Ocean Data Telemetry Using Frequency-Agile HF Packet-switching Protocols  

Science Conference Proceedings (OSTI)

Experiences with two prototype telemetry systems developed for potential use with moored or drifting ocean instruments are described. The systems transfer data and commands between remote and base stations using direct high-frequency (HF) ...

David A. Brooks; Melbourne G. Briscoe

1991-12-01T23:59:59.000Z

187

Thermodynamic Modeling and Experimental Study of the Fe-Cr-Zr System  

Science Conference Proceedings (OSTI)

Wide applications of zircaloys, stainless steels and their interactions in nuclear reactors require the knowledge on phase stability and thermodynamic property of the Fe-Cr-Zr system. This knowledge is also important to develop new Zr-contained Fe-Cr ferritic steels. This work aims at developing thermodynamic models for describing phase stability and thermodynamic property of the Fe-Cr-Zr system using the Calphad approach coupled with experimental study. Thermodynamic descriptions of the Fe-Cr and Cr-Zr systems were either directly adopted or slightly modified from literature. The Fe-Zr system has been remodeled to accommodate recent ab-initio calculation of formation enthalpies of various Fe-Zr compounds. Reliable ternary experimental data and thermodynamic models were mainly available in the Zr-rich region. Therefore, selected ternary alloys located in the vicinity of the eutectic valley of (Fe,Cr,Zr) and (Fe,Cr)2Zr laves phase in the Fe-rich region have been experimentally investigated in this study. Microstructure has been examined by using scanning electron microscope, energy-dispersive Xray spectroscopy and X-ray diffraction. These experimental results, along with the literature data were then used to develop thermodynamic models for phases in the Fe-Cr-Zr system. Calculated phase equilibria and thermodynamic properties of the ternary system yield satisfactory agreements with available experimental data, which gives the confidence to use these models as building blocks for developing a Zr, Fe and Cr contained multicomponent thermodynamic database for broader applications in nuclear reactors.

Yang, Ying [ORNL; Tan, Lizhen [ORNL; Bei, Hongbin [ORNL; Busby, Jeremy T [ORNL

2013-01-01T23:59:59.000Z

188

Non-molecular Phases of H2O and HF Under Detonation-like Conditions  

DOE Green Energy (OSTI)

Energetic materials are known to produce simple molecular species, such as HF and H{sub 2}O, during detonation. The behavior of such species under conditions of simultaneous high pressure and temperature are unknown. The predicted high pressure superionic phases of water and HF are investigated via ab initio molecular dynamics. We study water at densities of 2.0-3.0 g/cc (34 -115 GPa) along the 2000 K isotherm. We find that extremely rapid (superionic) diffusion of protons occurs in a fluid phase at pressures between 34 and 58 GPa. A transition to a stable body-centered cubic (bcc) O lattice with superionic proton conductivity is observed between 70 and 75 GPa. We find that all molecular species at pressures greater than 75 GPa are too short lived to be classified as bound states. Up to 95 GPa, we find a solid superionic phase characterized by covalent O-H bonding. Above 95 GPa, a transient network phase is found characterized by symmetric O-OH hydrogen bonding with nearly 50% covalent character. Ab initio molecular dynamics H simulations of HF were conducted at densities of 1.8-4.0 g/cc along the 900 K isotherm. According to our simulations, a unique form of (symmetric) hydrogen bonding could play a significant role in superionic conduction. Our work shows that the Chapman-Jouget and Zeldovich-von Neumann Doring (ZND) states of some energetic materials are close to the molecular to non-molecular transition.

Fried, L E; Goldman, N; Kuo, I W; Mundy, C J

2006-07-10T23:59:59.000Z

189

Nitric Acid Oxidized ZrO$_2$ as the Tunneling Oxide of Cobalt Silicide Nanocrystal Memory Devices  

Science Conference Proceedings (OSTI)

In this study, ZrO$_2$ formed by the nitric acid oxidation method is proposed to be the tunneling oxide for nonvolatile memory device applications. The sputtered Zr thin film was oxidized ...

Chih-Wei Hu; Ting-Chang Chang; Chun-Hao Tu; Yang-Dong Chen; Chao-Cheng Lin; Min-Chen Chen; Jian-Yang Lin; Simon M. Sze; Tseung-Yuen Tseng

2011-09-01T23:59:59.000Z

190

Report on Characterization of U-10 wt.% Zr Alloy  

SciTech Connect

This report summarizes the chemical and structural characterization results for a U-10 wt.% Zr alloy to be used in an ultra-high burn-up nuclear fuel concept. The as-cast alloy material was received from Texas A and M University. Characterization and an initial heat treatment of the alloy material were conducted at Lawrence Livermore National Laboratory. The as-received ingot was sectioned for X-ray analysis, metallography, SEM, TEM, and heat treatments, as shown in Figure 1.

McKeown, J; Wall, M; Hsiung, L; Turchi, P

2012-03-01T23:59:59.000Z

191

High-field superconductivity in some bcc Ti-Mo and Nb-Zr alloys  

Science Conference Proceedings (OSTI)

Zero electrical resistance at unusually high magnetic field strengths has been observed in the bcc alloys Ti-16 a/o (atomic percent) Mo, Nb-12 a/o Zr, and Nb-25 a/o Zr. The maximum highfield zero-resistance current density, Jc, in these ...

R. R. Hake; T. G. Berlincourt; D. H. Leslie

1962-01-01T23:59:59.000Z

192

Amorphous W-Zr films as diffusion barriers between Al and Si  

SciTech Connect

Cosputtered W70Zr30 and W40Zr60 films are investigated as diffusion barriers between Aq and Si. W-Zr alloys of both compositions were determined by x-ray diffraction to crystallize at 900/sup 0/C on A1/sub 2/O/sub 3/ substrates. On <111>Si the W-Zr alloy reacts with the substrate above 700/sup 0/C, forming a uniform, polycrystalline layer of W and Zr silicides. Despite the high crystallization temperatures, an A1 overlayer interacts with W-Zr and the Si substrate at approx. 500/sup 0/C. MeV He-backscattering spectrometry, SEM, and EDAX indicate that this reaction is laterally nonuniform with the formation of deep pits penetrating into the Si substrate. The authors believe this to be a consequence of fractures in the W-Zr layer induced by reaction with A1. Electrical measurements on shallow junction diodes with /W-Zr/Al contacts show that the device junctions were thermally stable after a 30 min annealing at 450/sup 0/C but were all shorted after heat treatments at 500/sup 0/C or above.

So, F.T.; Zhao, X.A.; Kolawa, E.; Tandon, J.L.; Zhu, M.F.

1986-01-01T23:59:59.000Z

193

Floodplain delineation with heC-RaS and GiS September 6-8, 2011  

E-Print Network (OSTI)

Floodplain delineation with heC-RaS and GiS September 6-8, 2011 texaS a&m UniverSity College Station, texaS texaS Water reSoUrCeS inStitUte Continuing Education Courses http, September 8, 5 p.m. at the Centeq Building on the Texas A&M University Campus. Please note that all

194

Microsoft PowerPoint - IPRC 2012-Zr behavior  

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

Behavior Behavior of Zirconium Oxide and Zirconium Metal in a LiCl-Li 2 O-Based Electrolytic Reduction System S. D. Herrmann, L. A. Wurth, N. J. Gese August 27, 2012 2012 International Pyroprocessing Research Conference The Abbey Resort Fontana, Wisconsin Introduction  Background - An electrometallurgical treatment process has been operating since 1996 to treat 25 MTHM of sodium-bonded uranium metal blanket and uranium metal alloy driver fuel from Experimental Breeder Reactor - II (EBR-II) at Idaho National Laboratory's Fuel Conditioning Facility. - In the course of retrieving EBR-II spent driver fuel for treatment, a significant quantity of degraded U-10Zr spent fuels, i.e., breached fuel exposed to air, has accumulated since 1996. - As oxidized material, it would require head-end treatment prior to electrorefining. - Electrolytic reduction is a candidate head-end treatment

195

The analysis of Ytrium doped BaZrO3  

Office of Scientific and Technical Information (OSTI)

Project Title: Enhanced Power Stability for Proton Conducting Solid Oxides Fuel Cells Project Title: Enhanced Power Stability for Proton Conducting Solid Oxides Fuel Cells Report Title: Computational modeling, synthesis, and characterization of BaZr 1-x Y x O 3-δ solid state proton conductor. Type of Report: Semi-Annual Technical Progress Report Reporting Period Start Date: March 30, 2003 Reporting Period End Date: September 30, 2003 Principle Authors: Boris Merinov, Claudio O. Dorso, William A. Goddard III, Jian Wu, and Sossina Haile Date Report was Issued: October 30, 2003 DOE Award Number: DE-FC26-02NT41631 Name and Address of Submitting Organization: California Institute of Technology, mail code 139- 74, 1200 E. California Blvd., Pasadena, CA 91125 1 DISCLAIMER This report was prepared as an account of work sponsored by an agency of the United States

196

VFL-HF heating of the lower ionosphere and ELF wave generation  

SciTech Connect

For incident wave power densities of 10{sup {minus}6} {minus} 10{sup {minus}2} W/m{sup 2} (at 30 km altitude), VLF heating of the D-region (< 90 km) is found to be 2-10 times more effective (depending on power) than HF heating, resulting in comparable perturbations of subionospheric VLF probe waves in spite of up to 10{sup 3} times larger power density utilized in HF heating and at least as efficient in ELF wave generation. In view of generally larger (100 {times} 100 km) area of the ionosphere illuminated by VLF transmitters, ELF wave generation by modulated VLF heating is estimated to produce ELF power levels of {approximately}100 mW, comparable with or larger than those produced in typical midlatitude ambient ionosphere occurs primarily via the modulation of Pedersen current whereas in a typical auroral ionosphere Hall current is dominant for pump wave frequencies up to {approximately}6 MHz. For 10-30 MHz and power densities > 10{sup {minus}4} W/m{sup 2}, Pedersen current modulation is again dominant, potentially providing up to 2-15 times higher ELF dipole moment than those found in recent experiments using 3-5 MHz heaters.

Taranenko, Y.N.; Inan, U.S.; Bell, T.F. (Stanford Univ., CA (United States))

1992-01-03T23:59:59.000Z

197

Plasma and vacuum ultraviolet induced charging of SiO{sub 2} and HfO{sub 2} patterned structures  

SciTech Connect

The authors compare the effects of plasma charging and vacuum ultraviolet (VUV) irradiation on oxidized patterned Si structures with and without atomic-layer-deposited HfO{sub 2}. It was found that, unlike planar oxidized Si wafers, oxidized patterned Si wafers charge up significantly after exposure in an electron-cyclotron resonance plasma. The charging is dependent on the aspect ratio of the patterned structures. This is attributed to electron and/or ion shading during plasma exposure. The addition of a 10 nm thick HfO{sub 2} layer deposited on top of the oxidized silicon structures increases the photoemission yield during VUV irradiation, resulting in more trapped positive charge compared to patterns without the HfO{sub 2} dielectric.

Lauer, J. L.; Upadhyaya, G. S.; Sinha, H.; Kruger, J. B.; Nishi, Y.; Shohet, J. L. [Plasma Processing and Technology Laboratory and Department of Electrical and Computer Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53706 (United States); Stanford Nanofabrication Facility, Stanford University, Stanford, California 94303 (United States); Stanford University, Stanford, California 94305 (United States); Plasma Processing and Technology Laboratory and Department of Electrical and Computer Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53706 (United States)

2012-01-15T23:59:59.000Z

198

Morphology and properties of sputtered HfN layers as a function of substrate temperature and sputtering atmosphere  

SciTech Connect

HfN layers were prepared by reactive rf-magnetron sputtering onto polished flat high speed steel (HSS) surfaces. Rectangular samples were mounted on a special holder providing temperatures in the range of 775 to 300 K along the length of the sample. The HfN layers were deposited at various total pressures and different N/sub 2//Ar ratios. The film morphology and composition was studied by scanning electron microscopy (SEM) and Auger electron spectroscopy (AES), respectively, and correlated with mechanical properties like microhardness and adhesion. The results are discussed with respect to the sputtering conditions.

Jehn, H.A.; Kopacz, U.; Hofmann, S.

1985-11-01T23:59:59.000Z

199

Model for Simulation of Hydride Precipitation in Zr-Based Used Fuel  

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

for Simulation of Hydride Precipitation in Zr-Based Used Fuel for Simulation of Hydride Precipitation in Zr-Based Used Fuel Claddings: A Status Report on Current Model Capabilities Model for Simulation of Hydride Precipitation in Zr-Based Used Fuel Claddings: A Status Report on Current Model Capabilities The report demonstrates a meso-scale, microstructural evolution model for simulation of zirconium hydride precipitation in the cladding of used fuels during long-term dry-storage. While the Zr-based claddings (regarded as a barrier for containment of radioactive fission products and fuel) are manufactured free of any hydrogen, they absorb hydrogen during service in the reactor. The amount of hydrogen that the cladding picks up is primarily a function of the exact chemistry and microstructure of the claddings and reactor operating conditions, time-temperature history, and

200

Oxidation Behavior of Arc Melted ZrB 2 -SiC Composite  

Science Conference Proceedings (OSTI)

Conventional microstructure of ZrB2-SiC is particulate structure i.e. SiC forms a network that is interconnected in three dimensions. During the...

Note: This page contains sample records for the topic "ra zr hf" 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

Catalytic activity of ZrO2 nanotube arrays prepared by anodization method  

Science Conference Proceedings (OSTI)

ZrO2 nanotube arrays were prepared by anodization method in aqueous electrolyte containing (NH4)2SO4 and NH4F. The morphology and structure of nanotube arrays were characterized through scanning ...

Xixin Wang; Jianling Zhao; Xiaorui Hou; Qi He; Chengchun Tang

2012-01-01T23:59:59.000Z

202

Instrumental Uncertainties in ZR Relationships and Raindrop Fall Velocities  

Science Conference Proceedings (OSTI)

This study demonstrates the sensitivity of reflectivityrainfall rate (ZR) relationships, which were derived from disdrometer-based drop size distribution measurements, to the fall velocity of the drops. The dataset used comes from the ...

Christian Salles; Jean-Dominique Creutin

2003-02-01T23:59:59.000Z

203

A Field Study of Reflectivity and ZR Relations Using Vertically Pointing Radars and Disdrometers  

Science Conference Proceedings (OSTI)

Observations from a 16-month field study using two vertically pointing radars and a disdrometer at Wallops Island are analyzed to examine the consistency of the multi-instrument observations with respect to reflectivity and ZR relations. The ...

Ali Tokay; Peter Hartmann; Alessandro Battaglia; Kenneth S. Gage; Wallace L. Clark; Christopher R. Williams

2009-06-01T23:59:59.000Z

204

Comparison of WPMM versus Regression for Evaluating ZR Relationships  

Science Conference Proceedings (OSTI)

The accuracy of the estimation of ZR relationships is evaluated for the Window Probability Matching Method (WPMM) and regression methods. The evaluation is based on experiments of random subsampling of disdrometer-obtained 1-min reflectivity Z ...

Daniel Rosenfeld; Eyal Amitai

1998-10-01T23:59:59.000Z

205

Exploring the Transient Behavior of ZR Relationships: Implications for Radar Rainfall Estimation  

Science Conference Proceedings (OSTI)

The objective of this study is to characterize the signature of dynamical microphysical processes on reflectivityrainfall (ZR) relationships used for radar rainfall estimation. For this purpose, a bin model with explicit microphysics was used ...

Olivier P. Prat; Ana P. Barros

2009-10-01T23:59:59.000Z

206

Sensitivity of the Estimated Monthly Convective Rain Fraction to the Choice of ZR Relation  

Science Conference Proceedings (OSTI)

This study investigates the sensitivity of the estimated monthly convective rain fractionthat is, the percentage of the areal rain accumulation contributed by precipitation identified as convectiveto variations of the ZR parameters used in ...

Matthias Steiner; Robert A. Houze Jr.

1997-05-01T23:59:59.000Z

207

In Situ Study of Radiation Damage in Pure Zr and Zircaloy-2  

Science Conference Proceedings (OSTI)

Presentation Title, In Situ Study of Radiation Damage in Pure Zr and Zircaloy-2 ... cascades at the early stages of damage development at very low dose (0.01...

208

Resistance Micro-seam Welding of Zr Based Glassy Alloy Foils  

Science Conference Proceedings (OSTI)

EPRI P87, A New Filler Material for Dissimilar Metal Welds Explosive Bonding of 316L to C18150 CuCrZr Alloy for ITER Applications Failure Mechanisms of...

209

Los Alamos National Laboratory Environmental Management Activities Funded by the Recovery Act, OAS-RA-11-15  

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

Los Alamos National Laboratory Los Alamos National Laboratory Environmental Management Activities Funded by the Recovery Act OAS-RA-11-15 August 2011 Department of Energy Washington, DC 20585 August 25, 2011 MEMORANDUM FOR THE MANAGER, LOS ALAMOS SITE OFFICE, NATIONAL NUCLEAR SECURITY ADMINISTRATION FROM: George W. Collard Assistant Inspector General for Audits SUBJECT: INFORMATION: Audit Report on "Los Alamos National Laboratory Environmental Management Activities Funded by the Recovery Act" BACKGROUND In February 2009, the American Recovery and Reinvestment Act of 2009 (Recovery Act) was enacted. The Department of Energy's (Department) National Nuclear Security Administration (NNSA) received approximately $212 million in Recovery Act funds from the Office of

210

The Department of Energy's American Recovery and Reinvestment Act - Washington State Energy Program, OAS-RA-12-10  

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

Washington Washington State Energy Program OAS-RA-12-10 May 2012 Department of Energy Washington, DC 20585 May 5, 2012 MEMORANDUM FOR THE ASSISTANT SECRETARY FOR ENERGY EFFICIENCY AND RENEWABLE ENERGY FROM: Rickey R. Hass Deputy Inspector General for Audits and Inspections Office of Inspector General SUBJECT: INFORMATION: Audit Report on "The Department of Energy's American Recovery and Reinvestment Act - Washington State Energy Program" BACKGROUND The Department of Energy's Office of Energy Efficiency and Renewable Energy (EERE) provides grants to states, territories and the District of Columbia (states) to support various energy priorities through the State Energy Program (SEP). These grants are awarded based on

211

The Department of Energy's American Recovery and Reinvestment Act - California State Energy Program, OAS-RA-11-10  

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

Department of Energy's Department of Energy's American Recovery and Reinvestment Act - California State Energy Program OAS-RA-11-10 July 2011 Department of Energy Washington, DC 20585 July 28, 2011 MEMORANDUM FOR THE ACTING ASSISTANT SECRETARY FOR ENERGY EFFICIENCY AND RENEWABLE ENERGY FROM: George W. Collard Assistant Inspector General for Audits Office of Inspector General SUBJECT: INFORMATION: Audit Report on "The Department of Energy's American Recovery and Reinvestment Act - California State Energy Program" BACKGROUND The Department of Energy's Office of Energy Efficiency and Renewable Energy (EERE) provides grants to states, territories and the District of Columbia (states) through the State

212

The Department of Energy's American Recovery and Reinvestment Act - New York State Energy Program, OAS-RA-12-08  

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

Department of Energy Department of Energy Office of Inspector General Office of Audits and Inspections Audit Report The Department of Energy's American Recovery and Reinvestment Act - New York State Energy Program OAS-RA-12-08 April 2012 Department of Energy Washington, DC 20585 April 19, 2012 MEMORANDUM FOR THE ASSISTANT SECRETARY FOR ENERGY EFFICIENCY AND RENEWABLE ENERGY for FROM: Rickey R. Hass Deputy Inspector General for Audits and Inspections Office of Inspector General SUBJECT: INFORMATION: Audit Report on "The Department of Energy's American Recovery and Reinvestment Act - New York State Energy Program" BACKGROUND The Department of Energy's State Energy Program (SEP) provides grants to states, territories

213

{sup 40}K, {sup 115}Cs and {sup 226}Ra Soil and Plant Content in Seminatural Grasslands of Central Argentina  

Science Conference Proceedings (OSTI)

Activity concentrations of {sup 40}K, {sup 226}Ra and {sup 137}Cs have been analyzed in soil and plant samples, collected in permanent grassland in central Argentina. Two near areas (A1 and A2) under field conditions with soil undisturbed at least in the last four decades were selected. For each of the three studied radionuclides we do not find differences in the inventories between both areas. The inventories range from 143 kBq m{sup -2} to 197 kBq m{sup -2} for {sup 40}K and from 13 kBq m{sup -2} to 18 kBq m{sup -2} for {sup 226}Ra. The vertical distributions of {sup 40}K and {sup 226}Ra are uniform through de soil profile. For {sup 137}Cs the inventories range from 0.33 kBq m{sup -2} to 0.73 kBq m{sup -2}. In spite of {sup 137}Cs inventories are similar in both areas the distribution through vertical profile is different. {sup 137}Cs activity concentration has a maximum for layers 5-10 cm depth in A1 and 10-15 cm depth in A2. For deeper layers both areas show similar activity concentrations. The diffusion coefficient (D{sub s}) and convection velocity (v{sub s}) are estimated with a convection-diffusion model. D{sub s} values are in the range reported in the bibliography, while v{sub s} values are one order of magnitude higher. After 40 years most {sup 137}Cs fallout is still in the layer 10-15 cm depth. The great penetration of {sup 137}Cs (25 cm) in these soils may be the result of a high sand and low fine materials content. {sup 137}Cs and {sup 226}Ra were not detected in grass samples. Activity concentration of {sup 40}K in vegetal samples ranges from 116 Bq kg{sup -1} to 613 Bq kg{sup -1}. The TF values obtained for {sup 40}K show a lognormal distribution and ranges from 0.05 to 0.42.

Ayub, J. Juri; Velasco, R. H.; Rizzotto, M. [Grupo de Estudios Ambientales. Instituto de Matematica Aplicada San Luis, Universidad Nacional de San Luis-CONICET, Ejercito de los Andes 950 (Argentina); Quintana, E.; Aguiar, J. [Autoridad Regulatoria Nuclear. Avenida del Libertador 8250, Buenos Aires(Argentina)

2008-08-07T23:59:59.000Z

214

Phase Stability and Thermodynamic Assessment of the Np-Zr system  

E-Print Network (OSTI)

Metallic fuels have an important role to play in "fast breeder" Gen-IV type nuclear reactors, and U-Pu-Zr is one of the prototypical systems. Because of the variability in fuel chemistry during burn-up, it is important to understand the effect of minor actinides and fission products on phase stability. Within this framework, we present a study on phase equilibria in the binary Np-Zr alloy system on which little work has been published. To resolve the contradictory reports on the ordering/ clustering trends of the bcc phase, a thermodynamic study is performed using the CALPHAD method. The calculated Np-Zr phase diagram is consistent with two sets of data: formation enthalpies of the bcc phase that are calculated with ab initio KKR-ASA-CPA electronic-structure method and lattice stabilities of solution phases obtained from first-principles technique. Another important feature in the Np-Zr alloy system is the non-stoichiometric delta-NpZr2 phase that forms in a hexagonal C32 structure similar to the delta-phase in the U-Zr system and the w-phase in pure Zr. An increase in the homogeneity range of the delta-phase when going from Pu to Np and to U is attributed to a lowering of its heat of formation that is caused by an increase in d-band occupation. Two different possibilities for the stability of the delta- and w- phases have been proposed in the present work. Additionally, calculated changes in enthalpy versus temperature are plotted for two alloy compositions of the Np-Zr system to guide future experimental work in resolving important issues in this system. Finally, an ab initio study, implemented with the L(S)DA U formalism, is performed for pure Np that reveals a transition from a non-magnetic to a magnetic state at a critical U parameter.

Bajaj, Saurabh

2010-12-01T23:59:59.000Z

215

Characterization of TiOxNy nanoparticles embedded in HfOxNy as charge trapping nodes for nonvolatile memory device applications  

Science Conference Proceedings (OSTI)

Silicon-oxide-nitride-oxide-silicon devices with nanoparticles (NPs) as charge trapping nodes (CTNs) are important to provide enhanced performance for nonvolatile memory devices. To study these topics, the TiO"xN"y metal oxide NPs embedded in the HfO"xN"y ... Keywords: Charge trapping nodes, HfOxNy, Nanoparticles, Nonvolatile memory devices, TiOxNy

Chien-Wei Liu; Chin-Lung Cheng; Kuei-Shu Chang-Liao; Jin-Tsong Jeng; Bau-Tong Dai; Chen-Pang Tsai

2009-07-01T23:59:59.000Z

216

Results from ORNL Characterization of Zr02-500-AK2 - Surrogate TRISO Material  

Science Conference Proceedings (OSTI)

This document is a compilation of the characterization data for the TRISO-coated surrogate particle batch designated ZrO2-500-AK2 that was produced at Oak Ridge National Laboratory (ORNL) as part of the Advanced Gas Reactor Fuel Development and Qualification (AGR) program. The ZrO2-500-AK2 material contains nominally 500 {micro}m kernels of yttria-stabilized zirconia (YSZ) coated with all TRISO layers (buffer, inner pyrocarbon, silicon carbide, and outer pyrocarbon). The ZrO2-500-AK2 material was created for: (1) irradiation testing in the High Flux Isotope Reactor (HFIR) and (2) limited dissemination to laboratories as deemed appropriate to the AGR program. This material was created midway into a TRISO fuel development program to accommodate a sudden opportunity to perform irradiation testing on surrogate material. While the layer deposition processes were chosen based on the best technical understanding at the time, technical progress at ORNL has led to an evolution in the perceived optimal deposition conditions since the createion of ZrO2-500-AK2. Thus, ZrO2-500-AK2 contains a reasonable TRISO microstructure, but does differ significanly from currently produced TRISO surrogates and fuel at ORNL. In this document, characterization data of the ZrO2-500-AK2 surrogate includes: size, shape, coating thickness, and density.

Hunn, John D [ORNL; Kercher, Andrew K [ORNL

2005-06-01T23:59:59.000Z

217

Results from ORNL characterization of ZrO2-500-AK2 - surrogate TRISO material  

Science Conference Proceedings (OSTI)

This document is a compilation of the characterization data for the TRISO-coated surrogate particles designated ZrO2-500-AK2 that was produced at Oak Ridge National Laboratory (ORNL) as part of the Advanced Gas Reactor Fuel Development and Qualification (AGR) program. The ZrO2-500-AK2 material contains nominally 500 {micro}m kernels of yttria-stabilized zirconia (YSZ) coated with all TRISO layers (buffer, inner pyrocarbon, silicon carbide, and outer pyrocarbon). The ZrO2-500-AK2 material was created for: (1) irradiation testing in the High Flux Isotope Reactor (HFIR) and (2) limited dissemination to laboratories as deemed appropriate to the AGR program. This material was created midway into a TRISO fuel development program to accommodate a sudden opportunity to perform irradiation testing on surrogate material. While the layer deposition processes were chosen based on the best technical understanding at the time, technical progress at ORNL has led to an evolution in the perceived optimal deposition conditions since the creation of ZrO2-500-AK2. Thus, ZrO2-500-AK2 contains a reasonable TRISO microstructure, but does differ significantly from currently produced TRISO surrogates and fuel at ORNL. In this document, characterization data of the ZrO2-500-AK2 surrogate includes: size, shape, coating thickness, and density.

Kercher, Andrew K [ORNL; Hunn, John D [ORNL

2005-06-01T23:59:59.000Z

218

Portsmouth DUF6 Conversion Final EIS - Appendix E: Impacts Associated with HF and CaF2 Conversion Product Sale and Use  

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

Portsmouth DUF Portsmouth DUF 6 Conversion Final EIS APPENDIX E: IMPACTS ASSOCIATED WITH HF AND CaF 2 CONVERSION PRODUCT SALE AND USE HF and CaF 2 Conversion Products E-2 Portsmouth DUF 6 Conversion Final EIS HF and CaF 2 Conversion Products E-3 Portsmouth DUF 6 Conversion Final EIS APPENDIX E: IMPACTS ASSOCIATED WITH HF AND CaF 2 CONVERSION PRODUCT SALE AND USE E.1 INTRODUCTION During the conversion of the depleted uranium hexafluoride (DUF 6 ) inventory to depleted uranium oxide, products having some potential for sale to commercial users would be produced. These products would include aqueous hydrogen fluoride (HF) and calcium fluoride (CaF 2 , commonly referred to as fluorspar). These products are routinely used as commercial materials, and an investigation into their potential reuse was done; results are included as part of

219

Paducah DUF6 Conversion Final EIS - Appendix E: Impacts Associated with HF and CaF2 Conversion Product Sale and Use  

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

Paducah DUF Paducah DUF 6 Conversion Final EIS APPENDIX E: IMPACTS ASSOCIATED WITH HF AND CaF 2 CONVERSION PRODUCT SALE AND USE HF and CaF 2 Conversion Products E-2 Paducah DUF 6 Conversion Final EIS HF and CaF 2 Conversion Products E-3 Paducah DUF 6 Conversion Final EIS APPENDIX E: IMPACTS ASSOCIATED WITH HF AND CaF 2 CONVERSION PRODUCT SALE AND USE E.1 INTRODUCTION During the conversion of the depleted uranium hexafluoride (DUF 6 ) inventory to depleted uranium oxide, products having some potential for sale to commercial users would be produced. These products would include aqueous hydrogen fluoride (HF) and calcium fluoride (CaF 2 , commonly referred to as fluorspar). These products are routinely used as commercial materials, and an investigation into their potential reuse was done; results are included as part of

220

Simulation of the Thorney Island Dense Gas Trial No. 8, using the code ADREA-HF  

SciTech Connect

In the framework of the evaluation of the three-dimensional, finite volume code ADREA-HF, a computational simulation of the Thorney Island Dense Gas Trial No. 8 is performed. A one-equation turbulence closure scheme is adopted in this first approach. The results of the simulation are compared with the experimental data in the form of concentration-time histories. The model predictions are satisfactory, with a tendency of the model to underestimate the maximum gas concentration and the time of its occurrence. The differences between model predictions and experimental data can be reduced by taking into account concentration fluctuations, utilization of finer numerical grids and improvements of the turbulence modeling. 3 refs., 14 figs.

Andronopoulos, S.; Wuertz, J. (Safety Technology Institute, Ispra (Italy)); Bartzis, J.G. (Institute for Nuclear Technology and Radiation Protection, Attiki (Greece)); Asimakopoulos, D. (Univ. of Athens (Greece))

1993-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "ra zr hf" 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

Quality Control of Surface Wave Data Estimated from Low Signal-to-Noise Ratio HF Radar Doppler Spectra  

Science Conference Proceedings (OSTI)

Ocean wave spectra estimated by high-frequency (HF) radar are very sensitive to the noise of Doppler spectra. The method for estimating wave spectra has been improved. This method is a nonlinear inversion and can be applied to a single radar case ...

Yukiharu Hisaki

2009-11-01T23:59:59.000Z

222

HF Radar Performance in a Low-Energy Environment: CODAR SeaSonde Experience on the West Florida Shelf  

Science Conference Proceedings (OSTI)

Three long-range (5 MHz) Coastal Ocean Dynamics Application Radar (CODAR) SeaSonde HF radars overlooking an array of as many as eight moored acoustic Doppler current profilers (ADCPs) have operated on the West Florida Shelf since September 2003 ...

Yonggang Liu; Robert H. Weisberg; Clifford R. Merz; Sage Lichtenwalner; Gary J. Kirkpatrick

2010-10-01T23:59:59.000Z

223

Texture and pyramidal slip in Ti, Zr and their alloys  

Science Conference Proceedings (OSTI)

Zirconium, titanium and their alloys have a high anisotropic plastic behavior. One way to show this behavior is to analyze the evolution of the Lankford coefficient (R ([alpha]), values of which are obtained from tensile tests along different directions in the sheet plane). The variation of R([alpha]) can be explained from the crystallographic texture and the active deformation mechanisms. Microstructural observations show that prismatic slip is the most active deformation mode in these materials, but no dimensional change in the [lt][bar c][gt] direction of grains is possible by the activation of the (10[bar 1]0) [lt] 1[bar 2]10[gt] slip alone; so deformation along [0001] has to be accommodated either by (10[bar 1]o) [lt]1[bar 2]13[gt] (or [lt][bar c] + [bar a][gt]) pyramidal slip or by twinning. Many transmission electron microscopy (TEM) studies have shown evidence for [lt][bar c] + [bar a][gt] slip activity, and some authors have reported slip on (1[bar 1]01) planes in Ti alloys. The purpose of this paper is to contribute with another analysis of pyramidal slip activity in hcp textured materials, such as Ti and Zr alloys, and of the hardening mechanisms for this deformation mode. This analysis is performed both in a direct way, by means of TEM observations of deformed samples, and in an indirect way, by different mechanical tests.

Pochettino, A.A.; Gannio, N. (Dept. Ciencias de Materiales, Gcia. Desarroilo, CNEA, Avda. Libertador 8250, 1429 Buenos Aires (Argentina)); Edwards, C.V. (Esc Ing. Mecanica, Pont. Univ. Catolica, Av. Vicuna Mackenna, Santiago de Chile (Chile)); Penelle, R. (Lab. de Metallurgie Structurale, URA CNRS 1107, Bat 413, Univ. Paris XI, 91 405 Orsay (France))

1992-12-15T23:59:59.000Z

224

Swift heavy ion irradiation-induced microstructure modification on two delta-phase oxides: Sc4Zr3O12 and Lu4Zr3O12  

Science Conference Proceedings (OSTI)

Swift gold ions (185 MeV) were used to systematically investigate the radiation damage response of delta phase compounds Sc{sub 4}Zr{sub 3}O{sub 12} and Lu{sub 4}Zr{sub 3}O{sub 12} in the electronic energy loss regime. Ion irradiation-induced microstructural modifications were examined using X-ray diffraction (XRD) and transmission electron microscopy (TEM). XRD investigations indicate a phase transformation from ordered rhombohedral to disordered fluorite (O-D) in both compounds, with the Sc compound transforming at a higher ion fluence compared with the Lu compound. This result is consistent with our previous study on Sc{sub 4}Zr{sub 3}O{sub 12} and Lu{sub 4}Zr{sub 3}O{sub 12} under displacive radiation environment in which the nuclear energy loss is dominant. High resolution TEM revealed that individual ion tracks maintains crystalline structure where the core region experiences an O-D phase transformation. TEM observation also suggests that the O-D phase transformation occurs through the ion range after overlapping of ion tracks.

Tang, Ming [Los Alamos National Laboratory; Zhang, Jian [Los Alamos National Laboratory; Uberuaga, Blas P [Los Alamos National Laboratory; Sickafus, Kurt E [Los Alamos National Laboratory; Reichhardt, Cynthia J [Los Alamos National Laboratory; Kluth, Patrick [AUSTRALIA; Maulik, Patel [INDIA

2009-01-01T23:59:59.000Z

225

Effect of stoichiometry in the HfCo2 C15 laves phase  

SciTech Connect

In binary Laves phases (AB2) that do exhibit a homogeneity range, the ability to accommodate nonstoichiometry is related to the atomic size requirements for the topologically close-packed structure. Experimentally, based upon a hard sphere model, Laves phases with a metallic atom size ratio RA/RB close to the ideal value of -1.225 exhibit homogeneity ranges. Interestingly, the enthalpy of formation for Laves phases also display the largest values at the ideal ratio. For example, Campbell plots are empirical investigations of enthalpy of formation as a function of atom size ratio. Within an elemental class of AB2 Laves phases (Le,, systematic variation of the A element), a maximum value in enthalpy is observed. To interpret this result, Embedded Atom Methods (EAM) using Lennard-Jones potentials have been used to correlatc atomic size to enthalpy of formation (and therefore homogeneity range), thus providing insight into geometric trends that define Laves phases. In addition, constitutional defect types (mostly anti-site substitution) can be interpreted. With this information, a model system can be explored. The C15 phase, Hl'Coz, has a radius ratio of RA{approx}/R=c {approx}1. 26 and a reported range of solubility of 9 at.%. The solubility limits and constitutional defects have been investigated, and with this information, the elastic and mechanical properties as a function composition were defined. The results indicate that anti-site substitution is the governing defect mechanism on both sides of stoichiometry. The elastic and mechanical properties show a maximum at stoichiometry (unlike most intermetallics), with the brittle behavior decreasing with increasing Co content. The properties are effectively described in terms of the geometric/electronic structure models developed for Laves phase intermetallics. Support from DOE-OBES is gratefully acknowledged.

Thoma, D. J. (Dan J.); Chen, K. Ch; Baskes, M. I. (Michael I.); Peterson, Edwin Lowell

2001-01-01T23:59:59.000Z

226

Morphology evolution of ZrB{sub 2} nanoparticles synthesized by sol-gel method  

SciTech Connect

Zirconium diboride (ZrB{sub 2}) nanoparticles were synthesized by sol-gel method using zirconium n-propoxide (Zr(OPr){sub 4}), boric acid (H{sub 3}BO{sub 3}), sucrose (C{sub 12}H{sub 22}O{sub 11}), and acetic acid (AcOH). Clearly, it was a non-aqueous solution system at the very beginning of the reactions. Here, AcOH was used as both chemical modifier and solvent to control Zr(OPr){sub 4} hydrolysis. Actually, AcOH could dominate the hydrolysis by self-produced water of the chemical propulsion, rather than the help of outer water. C{sub 12}H{sub 22}O{sub 11} was selected, since it can be completely decomposed to carbon. Thus, carbon might be accounted precisely for the carbothermal reduction reaction. Furthermore, we investigated the influence of the gelation temperature on the morphology of ZrB{sub 2} particles. Increasing the gelation temperature, the particle shapes changed from sphere-like particles at 65 deg. C to a particle chain at 75 deg. C, and then form rod-like particles at 85 deg. C. An in-depth HRTEM observation revealed that the nanoparticles of ZrB{sub 2} were gradually fused together to evolve into a particle chain, finally into a rod-like shape. These crystalline nature of ZrB{sub 2} related to the gelation temperature obeyed the 'oriented attachment mechanism' of crystallography. - Graphical Abstract: Increasing the gelation temperature, the particle shapes changed from sphere-like particles at 65 deg. C to a particle chain at 75 deg. C, and then form rod-like particles at 85 deg. C. Highlights: > ZrB{sub 2} nanoparticles were synthesized by sol-gel method in an non-aqueous solution system. > AcOH was used as both chemical modifier and solvent to control Zr(OPr){sub 4} hydrolysis. > C{sub 12}H{sub 22}O{sub 11} was selected since it can be completely decomposed to carbon. > Increasing the gelation temperature, the particles changed from sphere-like to rod-like ones. > Crystalline nature of ZrB{sub 2} obeyed the 'oriented attachment mechanism' of crystallography.

Zhang Yun [Key Laboratory of Aerospace Materials and Performance (Ministry of Education), School of Materials Science and Engineering, Beihang University, Beijing 100191 (China); Li Ruixing, E-mail: ruixingli@yahoo.com [Key Laboratory of Aerospace Materials and Performance (Ministry of Education), School of Materials Science and Engineering, Beihang University, Beijing 100191 (China); Jiang Yanshan; Zhao Bin; Duan Huiping [Key Laboratory of Aerospace Materials and Performance (Ministry of Education), School of Materials Science and Engineering, Beihang University, Beijing 100191 (China); Li Junping; Feng Zhihai [Aerospace Research Institute of Materials and Processing Technology, Beijing 100076 (China)

2011-08-15T23:59:59.000Z

227

Self-interstitial configurations in hcp Zr: a first principles analysis  

Science Conference Proceedings (OSTI)

Analysis of microstructure evolution in irradiated Zr and Zr alloys based on the modern radiation damage theory suggests some important features of self-interstitial atoms (SIAs). Alignment of vacancy loops and voids along basal planes requires anisotropic interstitial transport with a dominant contribution along the basal plane. Under neutron irradiation this can be explained by one-dimensional mobility of SIA clusters but experiments under electron irradiation indicate unambiguously that even the single SIA should exhibit anisotropic diffusion. No experimental information is available on SIA properties in Zr and the data obtained by ab initio calculations within the last decade reported stable SIA configurations that should provide essentially three-dimensional diffusion. To clarify this issue, an extensive investigation of SIAs in Zr has been performed from first principles using two different codes. It was demonstrated that simulation cell size, type of pseudopotential, the exchange-correlation functional, and the c/a ratio are crucially important for determining the properties of interstitials in hcp Zr. The most stable SIA configurations lie in the basal plane, which should lead to SIA diffusion mainly along basal planes. The results provide a confirmation of basic mechanisms for microstructural evolution under irradiation.

Samolyuk, German D [ORNL; Golubov, Stanislav I [ORNL; Osetskiy, Yury N [ORNL; Stoller, Roger E [ORNL

2013-01-01T23:59:59.000Z

228

Audit Report: Modular Office Facilities for Recovery Act Program Activities at the Hanford Site, OAS-RA-13-04  

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

U.S. Department of Energy U.S. Department of Energy Office of Inspector General Office of Audits and Inspections Audit Report Modular Office Facilities for Recovery Act Program Activities at the Hanford Site OAS-RA-L-13-04 July 2013 Department of Energy Washington, DC 20585 July 9, 2013 MEMORANDUM FOR THE MANAGER, RICHLAND OPERATIONS OFFICE FROM: David Sedillo, Director Western Audits Division Office of Inspector General SUBJECT: INFORMATION: Audit Report on "Modular Office Facilities for Recovery Act Program Activities at the Hanford Site" BACKGROUND The Department of Energy's Richland Operations Office (Richland) awarded a contract, effective October 1, 2008, to CH2M HILL Plateau Remediation Company (CHPRC) to remediate select portions of the Hanford Site's Central Plateau. As part of the American Recovery and

229

Special Inquiry on the Office of the Chief Financial Officer's Information Technology Expenditures, OAS-RA-L-12-01  

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

Special Inquiry on the Office of the Special Inquiry on the Office of the Chief Financial Officer's Information Technology Expenditures OAS-RA-L-12-01 November 2011 Department of Energy Washington, DC 20585 November 28, 2011 MEMORANDUM FOR THE DEPUTY SECRETARY FROM: Gregory H. Friedman Inspector General SUBJECT: INFORMATION: Special Report on "Inquiry on the Office of the Chief Financial Officer's Information Technology Expenditures" INTRODUCTION The Office of the Chief Financial Officer (OCFO) is responsible for ensuring the effective management and financial integrity of Department of Energy programs, projects, and resources. To achieve its mission, the OCFO develops, implements, and monitors policies and systems related to areas such as budget administration, program analysis, and strategic planning. The

230

The State of Nevada's Implementation of the Energy Efficiency and Conservation Block Grant Program, OAS-RA-12-02  

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

U.S. Department of Energy U.S. Department of Energy Office of Inspector General Office of Audits and Inspections Audit Report The State of Nevada's Implementation of the Energy Efficiency and Conservation Block Grant Program OAS-RA-12-02 November 2011 Department of Energy Washington, DC 20585 November 9, 2011 MEMORANDUM FOR THE ACTING ASSISTANT SECRETARY, ENERGY EFFICIENCY AND RENEWABLE ENERGY FROM: George W. Collard Assistant Inspector General for Audits Office of Inspector General SUBJECT: INFORMATION: Audit Report on "The State of Nevada's Implementation of the Energy Efficiency and Conservation Block Grant Program" BACKGROUND The American Recovery and Reinvestment Act of 2009 (Recovery Act) was enacted to stimulate the U.S. economy, create jobs and reduce energy consumption. Under the

231

Costs Incurred by Selected Tribal Energy Efficiency and Conservation Block Grant Recipients, OAS-RA-13-28  

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

Costs Incurred by Selected Tribal Costs Incurred by Selected Tribal Energy Efficiency and Conservation Block Grant Recipients OAS-RA-13-28 July 2013 Department of Energy Washington, DC 20585 July 18, 2013 MEMORANDUM FOR THE ASSISTANT SECRETARY FOR ENERGY EFFICIENCY AND RENEWABLE ENERGY FROM: Rickey R. Hass Deputy Inspector General for Audits and Inspections Office of Inspector General SUBJECT: INFORMATION: Audit Report on "Costs Incurred by Selected Tribal Energy Efficiency and Conservation Block Grant Recipients" BACKGROUND Under the American Recovery and Reinvestment Act of 2009 (Recovery Act), the Department of Energy's (Department) Energy Efficiency and Conservation Block Grant (EECBG) Program received $3.2 billion to improve energy efficiency and reduce energy use and fossil fuel

232

The Status of Energy Efficiency and Conservation Block Grant Recipients' Obligations, OAS-RA-11-16  

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

Management Alert Management Alert The Status of Energy Efficiency and Conservation Block Grant Recipients' Obligations OAS-RA-11-16 September 2011 Department of Energy Washington, DC 20585 September 1, 2011 MEMORANDUM FOR THE SECRETARY FROM: Gregory H. Friedman Inspector General SUBJECT: INFORMATION: Management Alert on "The Status of Energy Efficiency and Conservation Block Grant Recipients' Obligations" IMMEDIATE CONCERN Because of the unprecedented level of funding provided under the American Recovery and Reinvestment Act of 2009 (Recovery Act) and the risks associated with spending such sums in a compressed period of time, the Office of Inspector General initiated a series of audits of the activities of the recipients of Department of Energy Energy Efficiency and Conservation Block

233

Waste Disposal and Recovery Act Efforts at the Oak Ridge Reservation,OAS-RA-L-12-01  

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

Waste Disposal and Recovery Act Waste Disposal and Recovery Act Efforts at the Oak Ridge Reservation INS-RA-L-12-01 December 2011 Department of Energy Washington, DC 20585 December 16, 2011 MEMORANDUM FOR THE MANAGER, OAK RIDGE OFFICE FROM: Sandra D. Bruce Assistant Inspector General for Inspections Office of Inspector General SUBJECT: INFORMATION: Inspection Report on "Waste Disposal and Recovery Act Efforts at the Oak Ridge Reservation" BACKGROUND The Department of Energy's (Department) expends billions of dollars to clean up contaminated sites and dispose of hazardous waste. The Department's Oak Ridge Office (ORO) is responsible for processing and disposing of the Transuranic (TRU) waste on the Oak Ridge Reservation (ORR), including approximately 3,500 cubic meters of legacy remote-handled (RH) and contact-

234

The crystal structure of Hf{sub 1.5+{delta}}Nb{sub 1.5-{delta}}As and structure-composition relations in the section Hf{sub 3}As-Nb{sub 3}As  

Science Conference Proceedings (OSTI)

The title compound Hf{sub 1.5+{delta}}Nb{sub 1.5-{delta}}As was characterized by means of single crystal X-ray diffraction. It represents a new structure type of intermetallic compounds (space group Pnma; lattice parameters a=7.142(2) A, b=3.583(2) A, c=11.640(2) A) and shows a small homogeneity range corresponding to (0.1thermodynamic calculations employing the compound energy formalism (CEF) with the aim to model the experimentally observed site fraction data for both ternary compounds as well as Gibbs energies at the temperature of equilibration (1400 deg. C). - Graphical abstract: Hf{sub 1.5+{delta}}Nb{sub 1.5-{delta}}As with a new structure type (space group Pnma; lattice parameters a=7.142(2) A, b=3.583(2) A, c=11.640(2)A) was synthesized. Phase relations, energies and partial ordering in the section Hf{sub 3}As-Nb{sub 3}As were studied by first principle DFT calculations and thermodynamic modelling.

Warczok, Piotr; Chumak, Igor [Department of Inorganic Chemistry/Materials Chemistry, University of Vienna, Waehringerstr. 42, A-1090 Wien (Austria); Richter, Klaus W., E-mail: klaus.richter@univie.ac.a [Department of Inorganic Chemistry/Materials Chemistry, University of Vienna, Waehringerstr. 42, A-1090 Wien (Austria)

2009-04-15T23:59:59.000Z

235

Report of the ICFA Beam Dynamics Workshop 'Accelerators for a Higgs Factory: Linear vs. Circular' (HF2012)  

E-Print Network (OSTI)

This paper is a summary report of the ICFA Beam Dynamics Workshop 'Accelerators for a Higgs Factory: Linear vs. Circular' (HF2012). It discusses four types of accelerators as possible candidates for a Higgs factory: linear e+e- colliders, circular e+e- colliders, muon collider and photon colliders. The comparison includes: physics reach, performance (energy and luminosity), upgrade potential, technology maturity and readiness, and technical challenges requiring further R&D.

Alain Blondel; Alex Chao; Weiren Chou; Jie Gao; Daniel Schulte; Kaoru Yokoya

2013-02-14T23:59:59.000Z

236

Insights into the mechanisms on chemical reactions: reaction paths for chemical reactions. [Li + HF; OH + H/sub 2/  

DOE Green Energy (OSTI)

We report reaction paths for two prototypical chemical reactions: Li + HF, an electron transfer reaction, and OH + H/sub 2/, an abstraction reaction. In the first reaction we consider the connection between the energetic terms in the reaction path Hamiltonian and the electronic changes which occur upon reaction. In the second reaction we consider the treatment of vibrational effects in chemical reactions in the reaction path formalism. 30 refs., 9 figs.

Dunning, T.H. Jr.; Rosen, E.; Eades, R.A.

1987-01-01T23:59:59.000Z

237

Skill Assessment of Resolving Ocean Surface Current Structure Using Compact-Antenna-Style HF Radar and the MUSIC Direction-Finding Algorithm  

Science Conference Proceedings (OSTI)

A skill analysis of the Multiple Signal Characterization (MUSIC) algorithm used in compact-antenna-style HF radar ocean current radial velocity/bearing determination is performed using simulation. The simulation is based upon three collocated ...

Tony de Paolo; Eric Terrill

2007-07-01T23:59:59.000Z

238

Generation of ELF and VLF waves by HF-modulated polar electrojet via a thermal instability process  

SciTech Connect

Generation of ELF and VLF waves via a thermal instability process in a HF-modulated polar electrojet has been investigated. It is shown that a positive feedback through the electron-neutral collisional heating process can cause the transient response of the plasma to the modulated HF heater to grow exponentially. The threshold fields of the instability under normal electrojet conditions are found to be about 2.25 V/m and 1.13 V/m for the operation of the o-mode and x-mode heaters with a 50% duty cycle, respectively. For a heater wave field of, e.g., 1.5 V/m, the instability can be excited by the x-mode heater within a few tens of millisecond. The predicted dependence of the ELF/VLF radiation amplitude on the percentage of the duty cycle of the HF modulation is identical to that of the recent observational results of Barr and Stubbe. 28 refs., 2 figs.

Kuo, S.P. (Polytechnic Univ., Farmingdale, NY (United States)); Lee, M.C. (Massachusetts Inst. of Technology, Cambridge (United States))

1993-02-05T23:59:59.000Z

239

Accelerated Publication: Drain current enhancement and negligible current collapse in GaN MOSFETs with atomic-layer-deposited HfO2 as a gate dielectric  

Science Conference Proceedings (OSTI)

Accumulation-type GaN metal-oxide-semiconductor field-effect-transistors (MOSFET's) with atomic-layer-deposited HfO"2 gate dielectrics have been fabricated; a 4@mm gate-length device with a gate dielectric of 14.8nm in thickness (an equivalent SiO"2 ... Keywords: Atomic layer deposition (ALD), Current collapse, GaN, HfO2, Metal-oxide-semiconductor field-effect-transistor (MOSFET)

Y. C. Chang; W. H. Chang; Y. H. Chang; J. Kwo; Y. S. Lin; S. H. Hsu; J. M. Hong; C. C. Tsai; M. Hong

2010-11-01T23:59:59.000Z

240

Processing of U-2.5Zr-7.5Nb and U-3Zr-9Nb alloys by sintering process  

Science Conference Proceedings (OSTI)

To minimize the risk of nuclear proliferation, there is worldwide interest in reducing fuel enrichment of research and test reactors. To achieve this objective while still guaranteeing criticality and cycle length requirements, there is need of developing high density uranium metallic fuels. Alloying elements such as Zr, Nb and Mo are added to uranium to improve fuel performance in reactors. In this context, the Centro de Desenvolvimento da Tecnologia Nuclear (CDTN) is developing the U-2.5Zr-7.5Nb and U-3Zr-9Nb (weight %) alloys by the innovative process of sintering that utilizes raw materials in the form of powders. The powders were pressed at 400 MPa and then sintered under a vacuum of about 1x10{sup -4} Torr at temperatures ranging from 1050 deg. to 1500 deg.C. The densities of the alloys were measured geometrically and by hydrostatic method and the phases identified by X ray diffraction (XRD). The microstructures of the pellets were observed by scanning electron microscopy (SEM) and the alloying elements were analyzed by energy dispersive X-ray spectroscopy (EDS). The results obtained showed the fuel density to slightly increase with the sintering temperature. The highest density achieved was approximately 80% of theoretical density. It was observed in the pellets a superficial oxide layer formed during the sintering process. (authors)

Dos Santos, A. M. M.; Ferraz, W. B.; Lameiras, F. S.; Mazzeu, T. D. O. [Centro de Desenvolvimento da Tecnologia Nuclear, CDTN-CNEN, Av. Presidente Antionio Carlos 6.627, 31270-901 Belo Horizonte, MG (Brazil)

2012-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "ra zr hf" 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

Effects of the oxygen precursor on the electrical and structural properties of HfO{sub 2} films grown by atomic layer deposition on Ge  

SciTech Connect

We report on the growth by atomic layer deposition of HfO{sub 2} films on HF-last treated Ge(001) substrates using HfCl{sub 4} as a Hf source and either O{sub 3} or H{sub 2}O as oxygen sources. The choice of the oxygen precursor strongly influences the structural, chemical, and electrical properties of the HfO{sub 2} films: Those grown using H{sub 2}O exhibit local epitaxial growth, a large amount of contaminants such as chlorine and carbon, and a large frequency dispersion of the capacitance-voltage (C-V) characteristics. Films grown using O{sub 3} are good insulators and exhibit well-shaped C-V curves with a minimum frequency dispersion of the accumulation capacitance. Moreover, they are smoother, less crystallized, and with a lower contaminant content than those grown using H{sub 2}O. However, the use of O{sub 3} leads to the formation of a 2 nm thick layer, possibly GeO{sub x}, at the HfO{sub 2}/Ge interface.

Spiga, S.; Wiemer, C.; Tallarida, G.; Scarel, G.; Ferrari, S.; Seguini, G.; Fanciulli, M. [Laboratorio Nazionale MDM-INFM, Via C. Olivetti 2, 20041 Agrate Brianza, MI (Italy)

2005-09-12T23:59:59.000Z

242

IBM-1 calculations towards the neutron-rich nucleus $^{106}$Zr  

E-Print Network (OSTI)

The neutron-rich N=66 isotonic and A=106 isobaric chains, covering regions with varying types of collectivity, are interpreted in the framework of the interacting boson model. Level energies and electric quadrupole transition probabilities are compared with available experimental information. The calculations for the known nuclei in the two chains are extrapolated towards the neutron-rich nucleus $^{106}$Zr.

S. Lalkovski; P. Van Isacker

2009-03-23T23:59:59.000Z

243

IBM-1 calculations towards the neutron-rich nucleus $^{106}$Zr  

E-Print Network (OSTI)

The neutron-rich N=66 isotonic and A=106 isobaric chains, covering regions with varying types of collectivity, are interpreted in the framework of the interacting boson model. Level energies and electric quadrupole transition probabilities are compared with available experimental information. The calculations for the known nuclei in the two chains are extrapolated towards the neutron-rich nucleus $^{106}$Zr.

Lalkovski, S

2009-01-01T23:59:59.000Z

244

Effect of particle morphology on sinterability of SiC-ZrO2 in microwave  

Science Conference Proceedings (OSTI)

The effect of particle morphology on the sinterability of microwave-sintered SiC-ZrO2 was evaluated in this paper. A comparison was alsomade against the electric furnace and resulted in faster heating rate because of the difference of heat ...

Lydia Anggraini; Kei Ameyama

2012-01-01T23:59:59.000Z

245

A Z-R Relation for Summertime Convective Clouds over West Texas  

Science Conference Proceedings (OSTI)

A set of Z-R relations is derived by linear regression for summertime convective rainfall in West Texas from data gathered with an SWR-75 weather radar and a network of weighing bucket raingages. Data from 21 storms were grouped into storm were ...

Eric A. Pani; Gerald M. Jurica

1989-10-01T23:59:59.000Z

246

The integration of Human Factors (HF) in the SAR process training course text  

SciTech Connect

This text provides the technical basis for a two-day course on human factors (HF), as applied to the Safety Analysis Report (SAR) process. The overall objective of this text and course is to: provide the participant with a working knowledge of human factors-related requirements, suggestions for doing a human safety analysis applying a graded approach, and an ability to demonstrate using the results of the human safety analysis, that human factors elements as defined by DOE (human factors engineering, procedures, training, oversight, staffing, qualifications), can support wherever necessary, nuclear safety commitments in the SAR. More specifically, the objectives of the text and course are: (1) To provide the SAR preparer with general guidelines for doing HE within the context of a graded approach for the SAR; (2) To sensitize DOE facility managers and staff, safety analysts and SAR preparers, independent reviewers, and DOE reviewers and regulators, to DOE Order 5480.23 requirements for HE in the SAR; (3) To provide managers, analysts, reviewers and regulators with a working knowledge of HE concepts and techniques within the context of a graded approach for the SAR, and (4) To provide SAR managers and DOE reviewers and regulators with general guidelines for monitoring and coordinating the work of preparers of HE inputs throughout the SAR process, and for making decisions regarding the safety relevance of HE inputs to the SAR. As a ready reference for implementing the human factors requirements of DOE Order 5480.22 and DOE Standard 3009-94, this course text and accompanying two-day course are intended for all persons who are involved in the SAR.

Ryan, T.G.

1995-03-01T23:59:59.000Z

247

Electrical and gas-sensitive properties of nanostructured SnO{sub 2}:ZrO{sub 2} semiconductor films  

Science Conference Proceedings (OSTI)

The results of a study of the effect of atomic composition of metal-oxide semiconductor composites SnO{sub 2}:ZrO{sub 2} on the surface morphology, polycrystal grain size, resistivity, concentration, free-carrier mobility, and gas-sensitive properties of thin films (0.5-2.5 {mu}m) are presented. Films SnO{sub 2} with ZrO{sub 2} additives (the Zr content was varied from 0.5 to 4.6 at %) are grown by reactive ion-beam sputtering of metal targets of different compositions in a controlled Ar + O{sub 2} atmosphere. Using transmission electron microscopy, atomic-force microscopy, and high-resolution transmission electron microscopy, it is experimentally shown that, as the Zr content increases in the SnO{sub 2}:ZrO{sub 2} film composition, the polycrystal grain size decreases from 45 to 10 nm, the free-carrier concentration decreases almost by four orders of magnitude and the mobility increases by approximately nine times. As the Zr content increases in the SnO{sub 2}:ZrO{sub 2} film from 0.5 to 4.6 at %, the temperature of maximum gas sensitivity of films to such gases as ethanol, isopropyl alcohol, and acetone decreases by 100-190 Degree-Sign C.

Rembeza, S. I., E-mail: rembeza@yandex.ru; Kosheleva, N. N.; Rembeza, E. S.; Svistova, T. V.; Shmatova, Yu. V. [Voronezh State Technical University (Russian Federation); Xu Gang [Tsinghua University (China)

2011-05-15T23:59:59.000Z

248

The SuperWASP wide-field exoplanetary transit survey: Candidates from Fields 23hr < RA < 03hr  

E-Print Network (OSTI)

Photometric transit surveys promise to complement the currently known sample of extra-solar planets by providing additional information on the planets and especially their radii. Here we present extra-solar planet (ESP) candidates from one such survey called, the Wide Angle Search for Planets (WASP) obtained with the SuperWASP wide-field imaging system. Observations were taken with SuperWASP-North located in La Palma during the April to October 2004 observing season. The data cover fields between 23hr and 03hr in RA at declinations above +12. This amounts to over $\\approx$400,000 stars with V magnitudes 8 to 13.5. For the stars brighter than 12.5, we achieve better than 1 percent photometric precision. Here we present 41 sources with low amplitude variability between $\\approx$ 1 and 10 mmag, from which we select 12 with periods between 1.2 and 4.4 days as the most promising extrasolar planet candidates. We discuss the properties of these ESP candidates, the expected fraction of transits recovered for our sample, and implications for the frequency and detection of hot-Jupiters.

D. J. Christian; D. L. Pollacco; I. Skillen; R. A. Street; F. P. Keenan; W. I. Clarkson; A. Collier Cameron; S. R. Kane; T. A. Lister; R. G. West; R. Enoch; A. Evans; A. Fitzsimmons; C. A. Haswell; C. Hellier; S. T. Hodgkin; K. Horne; J. Irwin; A. J. Norton; J. Osborne; R. Ryans; P. J. Wheatley; D. M. Wilson

2006-08-07T23:59:59.000Z

249

People's Equal Action and Community Effort, Inc. Š Weatherization Assistance Program Funds Provided by the American Recovery and Reinvestment Act of 2009, OAS-RA-11-20  

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

People's Equal Action and People's Equal Action and Community Effort, Inc. - Weatherization Assistance Program Funds Provided by the American Recovery and Reinvestment Act of 2009 OAS-RA-11-20 September 2011 Department of Energy Washington, DC 20585 September 30, 2011 MEMORANDUM FOR THE ACTING ASSISTANT SECRETARY FOR ENERGY EFFICIENCY AND RENEWABLE ENERGY FROM: Rickey R. Hass Deputy Inspector General for Audits and Inspections Office of Inspector General SUBJECT: INFORMATION: Examination Report on "People's Equal Action and Community Effort, Inc. - Weatherization Assistance Program Funds Provided by the American Recovery and Reinvestment Act of 2009" Audit Report Number: OAS-RA-11-20 BACKGROUND The attached report presents the results of an examination of the People's Equal Action and

250

Action for a Better Community, Inc. … Weatherization Assistance Program Funds Provided by the American Recovery and Reinvestment Act of 2009, OAS-RA-11-21  

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

Action for a Better Community, Inc. - Action for a Better Community, Inc. - Weatherization Assistance Program Funds Provided by the American Recovery and Reinvestment Act of 2009 OAS-RA-11-21 September 2011 Department of Energy Washington, DC 20585 September 30, 2011 MEMORANDUM FOR THE ACTING ASSISTANT SECRETARY FOR ENERGY EFFICIENCY AND RENEWABLE ENERGY FROM: Rickey R. Hass Deputy Inspector General for Audits and Inspections Office of Inspector General SUBJECT: INFORMATION: Examination Report on "Action for a Better Community, Inc. - Weatherization Assistance Program Funds Provided by the American Recovery and Reinvestment Act of 2009" Audit Report Number: OAS-RA-11-21 INTRODUCTION AND OBJECTIVE The attached report presents the results of an examination of Action for a Better Community's

251

The 12 GeV CEBAF Upgrade Project at Thomas Jefferson National Accelerator Facility, OAS-RA-L-11-13  

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

12 GeV CEBAF Upgrade 12 GeV CEBAF Upgrade Project at Thomas Jefferson National Accelerator Facility OAS-RA-L-11-13 September 2011 Department of Energy Washington, DC 20585 September 30, 2011 MEMORANDUM FOR THE DEPUTY DIRECTOR FOR SCIENCE PROGRAMS, OFFICE OF SCIENCE DIRECTOR, OFFICE OF RISK MANAGEMENT AND FINANCIAL POLICY, OFFICE OF THE CHIEF FINANCIAL OFFICER FROM: David Sedillo, Director NNSA & Science Audits Division Office of Inspector General SUBJECT: INFORMATION: Audit Report on "The 12 GeV CEBAF Upgrade Project at Thomas Jefferson National Accelerator Facility" Audit Report Number: OAS-RA-L-11-13 BACKGROUND In September 2008, the Department of Energy's (Department) Office of Science approved a construction project to double the electron beam energy of the Continuous Electron Beam

252

Electric dipole moments of Hg, Xe, Rn, Ra, Pu, and TlF induced by the nuclear Schiff moment and limits on time-reversal violating interactions  

E-Print Network (OSTI)

We have calculated the atomic electric dipole moments (EDMs) induced in ^{199}Hg, ^{129}Xe, ^{223}Rn, ^{225}Ra, and ^{239}Pu by their respective nuclear Schiff moments S. The results are (in units 10^{-17}S(e {fm}^{3})^{-1}e cm): d(^{199}Hg)=-2.8, d(^{129}Xe)=0.38, d(^{223}Rn)=3.3, d(^{225}Ra)=-8.5, d(^{239}Pu)=-11. We have also calculated corrections to the parity- and time-invariance-violating (P,T-odd) spin-axis interaction constant in TlF. These results are important for the interpretation of atomic and molecular experiments on EDMs in terms of fundamental P,T-odd parameters.

V. A. Dzuba; V. V. Flambaum; J. S. M. Ginges; M. G. Kozlov

2002-03-21T23:59:59.000Z

253

Investigations of the g{sub K}-factors in the {sup 175,177,179}Hf Isotopes  

Science Conference Proceedings (OSTI)

In this paper the intrinsic g{sub K} and effective spin g{sub s} factors of the odd-mass {sup 175-179}Hf isotopes have been investigated within the Tamm-Dancoff approximation by using the realistic Saxon-Woods potential. The theoretically calculated g{sub K} and g{sub s}{sup eff} values are compared with experimental data. The comparison of the measured and calculated values of the effective g{sub s} factor shows that the spin polarization explains quite well the observed reduction of g{sub s} from its free-nucleon value.

Yakut, Hakan; Kuliev, Ali [Sakarya University, Department of physics, Sakarya (Turkey); Guliyev, Ekber [National Academy of Sciences, Institute of Physics, Baku (Azerbaijan)

2008-11-11T23:59:59.000Z

254

ANNUITY(RA) RETIREMENTANNUITY  

E-Print Network (OSTI)

GSRAs have ER contributions Allocation Choices** TIAA Traditional: a fixed annuity (provides guarantees) issued by TIAA, an insurance company TIAA Real Estate: a variable annuity (no guarantees; returns fluctuate)+ issued by a separate account of TIAA CREF: a variable annuity (no guarantees; returns fluctuate

255

Co.ra  

Office of Legacy Management (LM)

of these specimens is to be identical to the fabri- cation of similar pieces made for Argonne National laboratory. The gadolinium seaquioxide should be introduced with the uranium...

256

RA CPG Industry Message  

Science Conference Proceedings (OSTI)

... Use less material and energy Substitute materials: non-toxic for toxic, renewable for non-renewable Reduce waste, cleaner production ...

2009-10-21T23:59:59.000Z

257

Hardness variation and cyclic crystalline-amorphous phase transformation in CuZr alloy during ball milling  

E-Print Network (OSTI)

The hardness and percent crystallinity of Cu33Zr67 powder samples are measured through several cycles of a cyclic phase transformation during ball milling. Each are found to cycle with a period of approximately 320 minutes. ...

Schoen, David Taylor

2005-01-01T23:59:59.000Z

258

Estimating calibration equations for predicting Ra-226 soil concentrations using RTRAK in-situ detectors at the Ambrosia Lake, New Mexico, Umtra site  

Science Conference Proceedings (OSTI)

This report describes a field study conducted at the Ambrosia Lake, New Mexico, UMTRA site to obtain data for calibrating the RTRAK Sodium Iodide (NaI) detectors for estimating concentrations of Ra-226 in surface soil. The statistical analyses indicate that the data are useful for estimating the calibration equations. Several statistical models are used to evaluate which model is best as a basis for the calibration equations. A procedure is provided for using the estimated calibration equations and extensive RTRAK measurements to estimate the average Ra-226 concentration on 100-m/sup 2/ land areas to determine whether additional remedial action is needed. The UMTRA Project office proposes to use the RTRAK for cleanup verification of surface Ra-226 contamination. The system enables 100% coverage of areas having undergone remedial action. The sensitivity of the system enables verification at less than 5 pCi/g averaged over 100 m/sup 2/, as specified by the Environmental Protection Agency (EPA) standards (40 CFR Part 192). This analysis demonstrates RTRAK's ability to meet reasonable standards of statistical accuracy, using commonly accepted procedures. 5 refs., 8 figs., 1 tab.

Gilbert, R. O.; Meyer, H. R.; Miller, M. L.; Begley, C.

1988-06-01T23:59:59.000Z

259

Devitrification kinetics and phase selection mechanisms in Cu-Zr metallic glasses  

Science Conference Proceedings (OSTI)

Metallic glasses have been a promising class of materials since their discovery in the 1960s. Indeed, remarkable chemical, mechanical and physical properties have attracted considerable attention, and several excellent reviews are available. Moreover, the special group of glass forming alloys known as the bulk metallic glasses (BMG) become amorphous solids even at relatively low cooling rates, allowing them to be cast in large cross sections, opening the scope of potential applications to include bulk forms and net shape structural applications. Recent studies have been reported for new bulk metallic glasses produced with lower cooling rates, from 0.1 to several hundred K/s. Some of the application products of BMGs include sporting goods, high performance springs and medical devices. Several rapid solidification techniques, including melt-spinning, atomization and surface melting have been developed to produce amorphous alloys. The aim of all these methods is to solidify the liquid phase rapidly enough to suppress the nucleation and growth of crystalline phases. Furthermore, the production of amorphous/crystalline composite (ACC) materials by partial crystallization of amorphous precursor has recently given rise to materials that provide better mechanical and magnetic properties than the monolithic amorphous or crystalline alloys. In addition, these advances illustrate the broad untapped potential of using the glassy state as an intermediate stage in the processing of new materials and nanostructures. These advances underlie the necessity of investigations on prediction and control of phase stability and microstructural dynamics during both solidification and devitrification processes. This research presented in this dissertation is mainly focused on Cu-Zr and Cu-Zr-Al alloy systems. The Cu-Zr binary system has high glass forming ability in a wide compositional range (35-70 at.% Cu). Thereby, Cu-Zr based alloys have attracted much attention according to fundamental research on the behaviors of glass forming alloys. Further motivation arising from the application of this system as a basis for many BMGs and ACC materials; the Cu-Zr system warrants this attention and offers great potential for the development of new materials. However, the prediction and control of microstructural evolution during devitrification remains challenging because of the complex devitrification behavior of the Cu-Zr binary alloy which is arising from the competition of metastable and stable phases and diversity of crystal structures. This dissertation details a systematic fundamental investigation into the mechanisms and kinetics of the various crystallization transformation processes involved in the overall devitrification response of Cu-Zr and Cu-Zr-Al glasses. Various isothermal and nonisothermal treatments are employed, and the structural response is characterized using bulk X-ray and thermal analysis methods as well as nanoscale microscopic analysis methods, revealing structural and chemical details down to the atomic-scale. By carefully combining techniques such as differential scanning calorimetry (DSC), in-situ synchrotron high energy X-ray diffraction (HEXRD), and transmission electron microscopy (TEM) to quantify the characterization transformations, this research has uncovered numerous details concerning the atomistic mechanisms of crystallization and has provided much new understanding related to the dominant phases, the overall reaction sequences, and the rate-controlling mechanisms. As such this work represents a substantial step forward in understanding these transformations and provides a clear framework for further progress toward ultimate application of controlled devitrification processing for the production of new materials with remarkable properties.

Kalay, Ilkay

2010-12-15T23:59:59.000Z

260

Band offsets in ZrO{sub 2}/InGaZnO{sub 4} heterojunction  

SciTech Connect

X-ray photoelectron spectroscopy was used to measure the energy discontinuity in the valence band ( White-Up-Pointing-Triangle E{sub V}) of amorphous InGaZnO{sub 4} (a-IGZO)/ZrO{sub 2} heterostructure deposited by DC and RF sputtering at room temperature, respectively. A value of White-Up-Pointing-Triangle E{sub V}= 0 eV was obtained by using the Ga and Zn 2p{sup 3} and In 3d{sup 3} energy levels as references. Given the experimental band gap of 3.1 eV and 5.8 eV for the a-IGZO and ZrO{sub 2}, respectively, this would indicate a conduction band offset of 2.7 eV in the system.

Yao Jianke [School of Computer and Information Engineering, Shenzhen Graduate School, Peking University, Shenzhen 518055 (China); Zhang Shengdong [School of Computer and Information Engineering, Shenzhen Graduate School, Peking University, Shenzhen 518055 (China); Institute of Microelectronics, Peking University, Beijing 100871 (China); Gong Li [Instrumental Analysis and Research Center, Sun Yat-Sen University, Guangzhou 510275 (China)

2012-08-27T23:59:59.000Z

Note: This page contains sample records for the topic "ra zr hf" 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

Air Oxidation Kinetics for Zr-based Alloys [Corrosion and Mechanics of  

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

Air Oxidation Kinetics for Air Oxidation Kinetics for Zr-based Alloys Capabilities Materials Testing Environmentally Assisted Cracking (EAC) of Reactor Materials Corrosion Performance/Metal Dusting Overview Light Water Reactors Fatigue Testing of Carbon Steels and Low-Alloy Steels Environmentally Assisted Cracking of Ni-Base Alloys Irradiation-Induced Stress Corrosion Cracking of Austenitic Stainless Steels Steam Generator Tube Integrity Program Air Oxidation Kinetics for Zr-based Alloys Fossil Energy Fusion Energy Metal Dusting Publications List Irradiated Materials Steam Generator Tube Integrity Other Facilities Work with Argonne Contact us For Employees Site Map Help Join us on Facebook Follow us on Twitter NE on Flickr Corrosion and Mechanics of Materials Light Water Reactors Bookmark and Share

262

Synthesis of bulk FeHfBO soft magnetic materials and its loss characterization at megahertz frequency  

SciTech Connect

Magnetic core materials with low loss, high saturation magnetization, large permeability, and operating frequency above 1 MHz are in high demands for the next generation of miniaturized power electronics. Amorphous FeHfB ribbons with thickness around 20 {mu}m have been fabricated through melt-spinning. Different heat treatments were performed on the FeHfB ribbons, and the relations among heat treatments, microstructure, and magnetic properties have been explored. Properties such as coercivity (H{sub c}) of 2.0 Oe and saturation magnetic flux density (B{sub S}) of 1.2 T have been achieved in samples with exchange coupling. The losses can be minimized by balancing the hysteretic and eddy current losses and can be further reduced with additional magnetic field annealing. At 5 MHz with peak magnetic flux density of 20 mT, the materials show core losses comparable to the best ferrites, but with higher permeability value of about 200 and superior saturation induction of more than 1 T.

Zhou Yang; Kou Xiaoming; Warsi Muhammad, Asif; Lin Shuo; Harris, Brendan S.; Parsons, Paul E.; Xiao, John Q. [Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716 (United States); Mu Mingkai; Lee, Fred C. [Center for Power Electronics System, Virginia Polytechnic and State University, Blacksburg, Virginia 24060 (United States); Zhu Hao [Spectrum Magnetics LLC, Wilmington, Delaware 19804 (United States)

2013-05-07T23:59:59.000Z

263

Mechanism of plutonium metal dissolution in HNO/sub 3/-HF-N/sub 2/H/sub 4/ solution  

DOE Green Energy (OSTI)

An oxidation-reduction balance of the products of the dissolution of plutonium metal and alloys in HNO/sub 3/-HF-N/sub 2/H/sub 4/ solution shows that the major reactions during dissolution are the reduction of nitrate to NH/sub 3/, N/sub 2/ and N/sub 2/O by the metal, and the oxidation of H free radicals to NH/sub 3/ by N/sub 2/H/sub 4/. Reactions between HNO/sub 3/ and N/sub 2/H/sub 4/ produce varying amounts of HN/sub 3/. The reaction rate is greater for delta-Pu than alpha-Pu, and is increased by higher concentrations of HF and HNO/sub 3/. The low yield of reduced nitrogen species indicates that nitrate is reduced on the metal surface without producing a significant concentration of species that react with N/sub 2/H/sub 4/. It is conjectured that intermediate Pu valences and electron transfer within the metal are involved. 7 refs., 3 tabs.

Karraker, D G

1985-01-01T23:59:59.000Z

264

Separate effects identification via casting process modeling for experimental measurement of UPuZr alloys  

SciTech Connect

Computational simulations of gravity casting processes for metallic UPuZr nuclear fuel rods have been performed using a design-of-experiments technique to determine the fluid flow, liquid heat transfer, and solid heat transfer parameters which most strongly influence the process solidification speed and fuel rod porosity. The results are used to make recommendations for the best investment of experimental time and effort to measure process parameters.

J. Crapps; D. S. DeCroix; J. D. Galloway; D. A. Korzekwa; R. Aikin; R. Fielding; R. Kennedy; C. Unal

2013-11-01T23:59:59.000Z

265

High strength Sn-Mo-Nb-Zr alloy tubes and method of making same  

DOE Patents (OSTI)

Tubes for use in nuclear reactors fabricated from a quaternary alloy comprising 2.5-4.0 wt% Sn, 0.5-1.5 wt% Mo, 0.5-1.5 wt% Nb, balance essentially Zr. The tubes are fabricated by a process of hot extrusion, heat treatment, cold working to size and age hardening, so as to produce a microstructure comprising elongated .alpha. grains with an acicular transformed .beta. grain boundary phase.

Cheadle, Brian A. (Deep River, CA)

1977-01-01T23:59:59.000Z

266

Effect of nitrogen incorporation on improvement of leakage properties in high-k HfO{sub 2} capacitors treated by N{sub 2}-plasma  

Science Conference Proceedings (OSTI)

The nitrogen incorporation into the HfO{sub 2} films with an EOT (equivalent oxide thickness) of 9 A was performed by N{sub 2}-plasma to improve the electrical properties. The dielectric properties and a leakage current characteristics of the capacitors were investigated as a function of plasma power and plasma treatment temperature. The dielectric constant of the capacitors is not influenced by nitrogen incorporation. The N{sub 2}-plasma treatment at 300 deg. C and 70 W exhibits the most effective influence on improvement of the leakage current characteristics. Leakage current density of the capacitors treated at 300 deg. C and 70 W exhibits a half order of magnitude lower than that without plasma treatment. Nitrogen incorporated into the HfO{sub 2} films possesses the intrinsic effect that drastically reduce the electron leakage current through HfO{sub 2} dielectrics by deactivating the V{sub O} (oxygen vacancy) related gap states.

Seong, Nak-Jin; Yoon, Soon-Gil; Yeom, Seung-Jin; Woo, Hyun-Kyung; Kil, Deok-Sin; Roh, Jae-Sung; Sohn, Hyun-Chul [Department of Materials Science and Engineering, Chungnam National University, Daeduk Science Town, 305-764, Daejon (Korea, Republic of); Hynix Semiconductor Inc., San 136-1 Ami-ri Bubal-eub Icheon-si Kyoungki-do, 467-701 (Korea, Republic of)

2005-09-26T23:59:59.000Z

267

A Novel Zr-1Nb Alloy and a New Look at Hydriding  

Science Conference Proceedings (OSTI)

A novel Zr-1Nb has begun development based on a working model that takes into account the hydrogen permeabilities for zirconium and niobium metals. The beta-Nb secondary phase particles (SPPs) in Zr-1Nb are believed to promote more rapid hydrogen dynamics in the alloy in comparison to other zirconium alloys. Furthermore, some hydrogen release is expected at the lower temperatures corresponding to outages when the partial pressure of H2 in the coolant is less. These characteristics lessen the negative synergism between corrosion and hydriding that is otherwise observed in cladding alloys without niobium. In accord with the working model, development of nanoscale precursors was initiated to enhance the performance of existing Zr-1Nb alloys. Their characteristics and properties can be compared to oxide-dispersion strengthened alloys, and material additions have been proposed to zirconium-based LWR cladding to guard further against hydriding and to fix the size of the SPPs for microstructure stability enhancements. A preparative route is being investigated that does not require mechanical alloying, and 10 nanometer molybdenum particles have been prepared which are part of the nanoscale precursors. If successful, the approach has implications for long term dry storage of used fuel and for new routes to nanoferritic and ODS alloys.

Robert D. Mariani; James I. Cole; Assel Aitkaliyeva

2013-09-01T23:59:59.000Z

268

Realization of high-quality HfO{sub 2} on In{sub 0.53}Ga{sub 0.47}As by in-situ atomic-layer-deposition  

Science Conference Proceedings (OSTI)

High {kappa} dielectric of HfAlO/HfO{sub 2} was an in-situ atomic-layer-deposited directly on molecular beam epitaxy grown In{sub 0.53}Ga{sub 0.47}As surface without using pre-treatments or interfacial passivation layers, where HfAlO (HfO{sub 2}:Al{sub 2}O{sub 3} {approx} 4:1) with high re-crystallization temperature was employed as the top oxide layer. The HfAlO ({approx}4.5 nm)/HfO{sub 2} (0.8 nm)/In{sub 0.53}Ga{sub 0.47}As metal oxide semiconductor capacitors have exhibited an oxide/In{sub 0.53}Ga{sub 0.47}As interface free of arsenic-related defective bonding, thermodynamic stability at 800 deg. C, and low leakage current densities of oxide thickness of less than 1 nm has been achieved by reducing the HfAlO thickness to {approx}2.7 nm with the same initial HfO{sub 2} thickness of {approx}0.8 nm.

Lin, T. D.; Hong, M. [Graduate Institute of Applied Physics and Department of Physics, National Taiwan University, Taipei 10617, Taiwan (China); Chang, Y. H. [Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan (China); Lin, C. A.; Huang, M. L.; Lee, W. C. [Department of Physics, National Tsing Hua University, Hsinchu 30013, Taiwan (China); Kwo, J. [Department of Physics, National Tsing Hua University, Hsinchu 30013, Taiwan (China); Center for Condensed Matter Sciences, National Taiwan University, Taipei 10617, Taiwan (China)

2012-04-23T23:59:59.000Z

269

Formation of tetragonal or monoclinic ZrO{sub 2} coatings by oxygen plasma treatment of Zr{sub 74.7}Cu{sub 19.7}Nb{sub 5.6} glassy thin films  

Science Conference Proceedings (OSTI)

The authors report on the production of stable nanostructured tetragonal and/or monoclinic ZrO{sub 2} nanopillars achieved by means of oxygen plasma treatment of ternary Zr{sub 74.7}Cu{sub 19.7}Nb{sub 5.6} glassy films. The Zr-based metallic glass thin films were successfully deposited by magnetron sputtering and subsequently subjected to oxygen plasma for various exposure times. The compositions of the oxidized films were determined by Auger electron spectroscopy and X-Ray photoelectron spectroscopy depth profiling while the surface morphology was evaluated by means of atomic force microscopy and scanning electron microscopy. X-Ray diffraction was used for the structural analysis. Our results show that, depending on the length of time of oxygen plasma treatment, tetragonal and/or monoclinic ZrO{sub 2} films can be formed, the surface morphology of which exhibit nanopillar structures with an increased effective surface. These findings provide an easy and efficient way for growing ZrO{sub 2} coatings with a predefined structure suitable for protective and possibly for catalytic applications.

Panagiotopoulos, N. T.; Kovac, J.; Mozetic, M.; Patsalas, P.; Evangelakis, G. A. [University of Ioannina, Department of Physics, Ioannina 45110 (Greece); Department of Surface Engineering and Optoelectronics, Jozef Stefan Institute, Ljubljana 1000 (Slovenia); University of Ioannina, Department of Materials Science and Engineering, Ioannina 45110 (Greece); University of Ioannina, Department of Physics, Ioannina 45110 (Greece)

2011-09-15T23:59:59.000Z

270

Western Area Power Administration's Control and Administration of American Recovery and Reinvestment Act Borrowing Authority, OAS-RA-12-01  

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

Management Alert Management Alert Western Area Power Administration's Control and Administration of American Recovery and Reinvestment Act Borrowing Authority OAS-RA-12-01 November 2011 Department of Energy Washington, DC 20585 November 4, 2011 MEMORANDUM FOR THE ADMINISTRATOR, WESTERN AREA POWER ADMINISTRATION FROM: Gregory H. Friedman Inspector General SUBJECT: INFORMATION: Management Alert on "The Western Area Power Administration's Control and Administration of American Recovery and Reinvestment Act Borrowing Authority" IMMEDIATE CONCERN Despite internal control and administration issues with its first project authorized under its $3.25 billion American Recovery and Reinvestment Act of 2009 (Recovery Act) borrowing authority, the Department of Energy's (Department) Western Area Power Administration

271

Area Community Services Employment and Training Council … Weatherization Assistance Program Funds Provided by the American Recovery and Reinvestment Act of 2009, OAS-RA-13-23  

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

Area Community Services Area Community Services Employment and Training Council - Weatherization Assistance Program Funds Provided by the American Recovery and Reinvestment Act of 2009 OAS-RA-13-23 June 2013 Department of Energy Washington, DC 20585 June 18, 2013 MEMORANDUM FOR THE ASSISTANT SECRETARY FOR ENERGY EFFICIENCY AND RENEWABLE ENERGY FROM: Rickey R. Hass Deputy Inspector General for Audits and Inspections Office of Inspector General SUBJECT: INFORMATION: Examination Report on "Area Community Services Employment and Training Council - Weatherization Assistance Program Funds Provided by the American Recovery and Reinvestment Act of 2009"

272

The Department's Implementation of Financial Incentive Programs under the Energy Efficiency and Conservation Block Grant Program, OAS-RA-L-13-02  

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

Implementation of Implementation of Financial Incentive Programs under the Energy Efficiency and Conservation Block Grant Program OAS-RA-L-13-02 December 2012 Department of Energy Washington, DC 20585 December 3, 2012 MEMORANDUM FOR THE PROGRAM MANAGER, WEATHERIZATION AND INTERGOVERNMENTAL PROGRAM FROM: George W. Collard Assistant Inspector General for Audits Office of Inspector General SUBJECT: INFORMATION: Audit Report on "The Department's Implementation of Financial Incentive Programs under the Energy Efficiency and Conservation Block Grant Program" BACKGROUND The Department of Energy's (Department) Energy Efficiency and Conservation Block Grant (EECBG) Program, funded for the first time by the American Recovery and Reinvestment Act of

273

The Department of Energy's American Recovery and Reinvestment Act-Missouri State Energy Program, OAS-RA-L-12-06  

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

American American Recovery and Reinvestment Act - Missouri State Energy Program OAS-RA-L-12-06 July 2012 Department of Energy Washington, DC 20585 July 20, 2012 MEMORANDUM FOR THE ASSISTANT SECRETARY FOR ENERGY EFFICIENCY AND RENEWABLE ENERGY FROM: Daniel M. Weeber, Director Eastern Audits Division Office of Inspector General SUBJECT: INFORMATION: Audit Report on "The Department of Energy's American Recovery and Reinvestment Act - Missouri State Energy Program" BACKGROUND The Department of Energy's Office of Energy Efficiency and Renewable Energy (EERE) provides grants to states, territories and the District of Columbia (states) to support their energy priorities through the State Energy Program (SEP). Funding is based on a grant formula that

274

Alleged Misuse of American Recovery and Reinvestment Act Grant Funds by the Western Arizona Council of Governments, INS-RA-12-01  

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

Alleged Misuse of American Alleged Misuse of American Recovery and Reinvestment Act Grant Funds by the Western Arizona Council of Governments INS-RA-12-01 February 2012 Department of Energy Washington, DC 20585 February 9, 2012 MEMORANDUM FOR THE ACTING ASSISTANT SECRETARY FOR ENERGY EFFICIENCY AND RENEWABLE ENERGY FROM: Sandra D. Bruce Assistant Inspector General for Inspections Office of Inspector General SUBJECT: INFORMATION: Inspection Report on "Alleged Misuse of American Recovery and Reinvestment Act Grant Funds by the Western Arizona Council of Governments" BACKGROUND The Department of Energy's Weatherization Assistance Program received $5 billion under the American Recovery and Reinvestment Act of 2009 to improve the energy efficiency of homes,

275

County of Los Angeles Energy Efficiency and Conservation Block Grant Program Funds Provided by the American Recovery and Reinvestment Act of 2009, OAS-RA-13-02  

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

County of Los Angeles - Energy County of Los Angeles - Energy Efficiency and Conservation Block Grant Program Funds Provided by the American Recovery and Reinvestment Act of 2009 OAS-RA-13-02 October 2012 Department of Energy Washington, DC 20585 October 9, 2012 MEMORANDUM FOR THE ASSISTANT SECRETARY, ENERGY EFFICIENCY AND RENEWABLE ENERGY FROM: Rickey R. Hass Deputy Inspector General for Audit Services Office of Inspector General SUBJECT: INFORMATION: Examination Report on "County of Los Angeles - Energy Efficiency and Conservation Block Grant Program Funds Provided by the American Recovery and Reinvestment Act of 2009" INTRODUCTION AND OBJECTIVE The attached report presents the results of an examination of the County of Los Angeles'

276

Cuyahoga County of Ohio Department of Development … Weatherization Assistance Program Funds Provided by the American Recovery and Reinvestment Act of 2009, OAS-RA-11-19  

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

Examination Report Examination Report Cuyahoga County of Ohio Department of Development - Weatherization Assistance Program Funds Provided by the American Recovery and Reinvestment Act of 2009 OAS-RA-11-19 September 2011 Department of Energy Washington, DC 20585 September 29, 2011 MEMORANDUM FOR THE ACTING ASSISTANT SECRETARY FOR ENERGY EFFICIENCY AND RENEWABLE ENERGY FROM: Rickey R. Hass Deputy Inspector General for Audits and Inspections Office of Inspector General SUBJECT: INFORMATION: Examination Report on "Cuyahoga County of Ohio Department of Development - Weatherization Assistance Funds Provided by the American Recovery and Reinvestment Act of 2009" BACKGROUND The attached report presents the results of an examination of the Cuyahoga County of Ohio

277

Community Action Partnership of San Bernardino County Š Weatherization Assistance Program Funds Provided by the American Recovery and Reinvestment Act of 2009, OAS-RA-13-17  

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

Fresno Fresno U.S. Department of Energy Office of Inspector General Office of Audits and Inspections Examination Report Community Action Partnership of San Bernardino County - Weatherization Assistance Program Funds Provided by the American Recovery and Reinvestment Act of 2009 OAS-RA-13-17 March 2013 Department of Energy Washington, DC 20585 March 28, 2013 MEMORANDUM FOR THE ASSISTANT SECRETARY FOR ENERGY EFFICIENCY AND RENEWABLE ENERGY FROM: Rickey R. Hass Deputy Inspector General for Audits and Inspections Office of Inspector General SUBJECT: INFORMATION: Examination Report on "Community Action Partnership of San Bernardino County - Weatherization Assistance Program Funds Provided by the American Recovery and Reinvestment

278

The Department of Energy's Weatherization Assistance Program under the American Recovery and Reinvestment Act in the State of Missouri (OAS-RA-11-11)  

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

Missouri Missouri OAS-RA-11-12 August 2011 Department of Energy Washington, DC 20585 August 22, 2011 MEMORANDUM FOR THE ACTING ASSISTANT SECRETARY FOR ENERGY EFFICIENCY AND RENEWABLE ENERGY FROM: George W. Collard Assistant Inspector General for Audits Office of Inspector General SUBJECT: INFORMATION: Audit Report on "The Department of Energy's Weatherization Assistance Program under the American Recovery and Reinvestment Act in the State of Missouri" BACKGROUND The Department of Energy's (Department) Weatherization Assistance Program (Weatherization Program) received $5 billion under the American Recovery and Reinvestment Act of 2009 (Recovery Act) to improve the energy efficiency of single family, multi-family, and mobile

279

The Department of Energy's Weatherization Assistance Program Funded under the American Recovery and Reinvestment Act for the Commonwealth of Virginia, OAS-RA-11-14  

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

Commonwealth of Virginia Commonwealth of Virginia OAS-RA-11-14 August 2011 Department of Energy Washington, DC 20585 August 25, 2011 MEMORANDUM FOR THE SECRETARY FROM: Gregory H. Friedman Inspector General SUBJECT: INFORMATION: Audit Report on "The Department of Energy's Weatherization Assistance Program Funded under the American Recovery and Reinvestment Act for the Commonwealth of Virginia" BACKGROUND In 2009, the Commonwealth of Virginia's (Virginia) Department of Housing and Community Development's (DHCD) Weatherization Assistance Program (Weatherization Program) was awarded a 3-year grant of approximately $94 million from the American Recovery and Reinvestment Act (Recovery Act) of 2009 to weatherize 9,193 homes. Virginia's DHCD

280

Fresno County Economic Opportunities Commission Š Weatherization Assistance Program Funds Provided by the American Recovery and Reinvestment Act of 2009, OAS-RA-13-11  

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

Fresno County Economic Fresno County Economic Opportunities Commission  Weatherization Assistance Program Funds Provided by the American Recovery and Reinvestment Act of 2009 OAS-RA-13-11 February 2013 Department of Energy Washington, DC 20585 February 19, 2013 MEMORANDUM FOR THE ASSISTANT SECRETARY FOR ENERGY EFFICIENCY AND RENEWABLE ENERGY FROM: Rickey R. Hass Deputy Inspector General for Audits and Inspections Office of Inspector General SUBJECT: INFORMATION: Examination Report on "Fresno County Economic Opportunities Commission - Weatherization Assistance Program Funds Provided by the American Recovery and Reinvestment Act of 2009" BACKGROUND The attached report presents the results of an examination of the Fresno County Economic

Note: This page contains sample records for the topic "ra zr hf" 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

The Department of Energy's Weatherization Assistance Program under the American Recovery and Reinvestment Act in the State of Ohio, OAS-RA-12-13  

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

Weatherization Assistance Program Weatherization Assistance Program under the American Recovery and Reinvestment Act in the State of Ohio OAS-RA-12-13 June 2012 Department of Energy Washington, DC 20585 June 25, 2012 MEMORANDUM FOR THE ASSISTANT SECRETARY, ENERGY EFFICIENCY AND RENEWABLE ENERGY FROM: Rickey R. Hass Deputy Inspector General for Audit Services Office of Inspector General SUBJECT: INFORMATION: Audit Report on "The Department of Energy's Weatherization Assistance Program under the American Recovery and Reinvestment Act in the State of Ohio" INTRODUCTION AND OBJECTIVE Under the American Recovery and Reinvestment Act of 2009, the Department of Energy's Weatherization Assistance Program (Weatherization Program) received $5 billion to increase the

282

The Department of Energy's Clean Cities Alternative Fuel Vehicle Grant Program Funded under the American Recovery and Reinvestment Act, OAS-RA-12-12  

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

Clean Clean Cities Alternative Fuel Vehicle Grant Program Funded under the American Recovery and Reinvestment Act OAS-RA-12-12 May 2012 Department of Energy Washington, DC 20585 May 22, 2012 MEMORANDUM FOR THE SECRETARY FROM: Gregory H. Friedman Inspector General SUBJECT: INFORMATION: Audit Report on "The Department of Energy's Clean Cities Alternative Fuel Vehicle Grant Program Funded under the American Recovery and Reinvestment Act" INTRODUCTION AND OBJECTIVE Under the American Recovery and Reinvestment Act of 2009, the Department of Energy's Clean Cities Alternative Fuel Vehicle Grant Program (Clean Cities Program) received nearly $300 million, or 30 times its Fiscal Year 2009 funding of approximately $10 million. From this

283

Community Action Partnership of Orange County - Weatherization Assistance Program Funds Provided by the American Recovery and Reinvestment Act of 2009, OAS-RA-13-03  

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

Community Action Partnership of Community Action Partnership of Orange County - Weatherization Assistance Program Funds Provided by the American Recovery and Reinvestment Act of 2009 OAS-RA-13-03 October 2012 Department of Energy Washington, DC 20585 October 17, 2012 MEMORANDUM FOR THE ASSISTANT SECRETARY, ENERGY EFFICIENCY AND RENEWABLE ENERGY FROM: Rickey R. Hass Deputy Inspector General for Audit Services Office of Inspector General SUBJECT: INFORMATION: Examination Report on "Community Action Partnership of Orange County - Weatherization Assistance Program Funds Provided by the American Recovery and Reinvestment Act of 2009" BACKGROUND The attached report presents the results of an examination of the Community Action Partnership

284

Phase transformation of "chem-prep" PZT 95/5-2Nb HF1035 ceramic under quasi-static loading conditions.  

SciTech Connect

Specimens of poled and unpoled ''chem-prep'' PNZT ceramic from batch HF1035 were tested under hydrostatic, uniaxial, and constant stress difference loading conditions at -55, 25, and 75 C. The objective of this experimental study was to characterize the mechanical properties and conditions for the ferroelectric (FE) to antiferroelectric (AFE) phase transformations of this ''chem-prep'' PNZT ceramic to aid grain-scale modeling efforts in developing and testing realistic response models for use in simulation codes. As seen from a previously characterized material (batch HF803), poled ceramic from HF1035 was seen to undergo anisotropic deformation during the transition from a FE to an AFE phase. Also, the phase transformation was found to be permanent for the two low temperature conditions, whereas the transformation can be completely reversed at the highest temperature. The rates of increase in the phase transformation pressures with temperature were practically identical for both unpoled and poled PNZT HF1035 specimens. We observed that temperature spread the phase transformation over mean stress analogous to the observed spread over mean stress due to shear stress. Additionally, for poled ceramic samples, the FE to AFE phase transformation was seen to occur when the normal compressive stress, acting perpendicular to a crystallographic plane about the polar axis, equals the hydrostatic pressure at which the transformation otherwise takes place.

Montgomery, Stephen Tedford; Lee, Moo Yul; Meier, Diane A.; Hofer, John H.

2006-07-01T23:59:59.000Z

285

GEOPHYSICAL RESEARCH LETTERS, VOL. 26, NO. 6, PAGES 667-670, MARCH 15, 1999 Observation of topside ionospheric MF/HF radio  

E-Print Network (OSTI)

ionospheric MF/HF radio emission from space S. D. Bale Space Sciences Laboratory, University of California `auroral roar', although to propa- gate to the spacecraft they must have been generated above spectrum as viewed from space. Introduction Observations of ionospheric radio emission in the MF (0.3-3 MHz

California at Berkeley, University of

286

Band offsets of Al{sub 2}O{sub 3} and HfO{sub 2} oxides deposited by atomic layer deposition technique on hydrogenated diamond  

SciTech Connect

High-k oxide insulators (Al{sub 2}O{sub 3} and HfO{sub 2}) have been deposited on a single crystalline hydrogenated diamond (H-diamond) epilayer by an atomic layer deposition technique at temperature as low as 120 Degree-Sign C. Interfacial electronic band structures are characterized by X-ray photoelectron spectroscopy. Based on core-level binding energies and valence band maximum values, valence band offsets are found to be 2.9 {+-} 0.2 and 2.6 {+-} 0.2 eV for Al{sub 2}O{sub 3}/H-diamond and HfO{sub 2}/H-diamond heterojunctions, respectively. Band gaps of the Al{sub 2}O{sub 3} and HfO{sub 2} have been determined to be 7.2 {+-} 0.2 and 5.4 {+-} 0.2 eV by measuring O 1s energy loss spectra, respectively. Both the Al{sub 2}O{sub 3}/H-diamond and HfO{sub 2}/H-diamond heterojunctions are concluded to be type-II staggered band configurations with conduction band offsets of 1.2 {+-} 0.2 and 2.7 {+-} 0.2 eV, respectively.

Liu, J. W.; Liao, M. Y.; Imura, M. [Optical and Electronic Materials Unit, National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044 (Japan); Koide, Y. [Optical and Electronic Materials Unit, National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044 (Japan); Nanofabrication Platform, NIMS, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047 (Japan); Center of Materials Research for Low Carbon Emission, NIMS, 1-1 Namiki, Tsukuba, Ibaraki 305-0044 (Japan)

2012-12-17T23:59:59.000Z

287

Light-induced structural changes in Eu-doped (Pb,La)(Zr,Ti)O{sub 3} ceramics  

SciTech Connect

Fluorescence spectra of poled and unpoled Eu-doped (Pb,La)(Zr,Ti)O{sub 3} ceramics with various compositions were measured using 580 nm excitation. The ratio of the intensities of the Eu{sup 3+} {sup 5}D{sub 0}{yields}{sup 7}F{sub 2}/{sup 5}D{sub 0}{yields}{sup 7}F{sub 1} fluorescence transitions was used as an indicator for the symmetry of the Eu{sup 3+} site. As the symmetry decreases, the ratio increases. Increasing the Zr content in (Pb,La)(Zr,Ti)O{sub 3} increases the ratio, indicating that the symmetry of the Eu{sup 3+} site decreases. Exposure of the Eu-doped (Pb,La)(Zr,Ti)O{sub 3} samples to UV light also increases the intensity ratio, indicating that UV light exposure leads to structural distortions in Eu-doped (Pb,La)(Zr,Ti)O{sub 3} samples, lowering the Eu{sup 3+} site symmetry.

Myint, Thandar; Gunawidjaja, Ray; Eilers, Hergen [Applied Sciences Laboratory, Institute for Shock Physics, Washington State University, Spokane, Washington 99210-1495 (United States)

2011-04-25T23:59:59.000Z

288

Beta-decay properties of Zr and Mo neutron-rich isotopes  

E-Print Network (OSTI)

Gamow-Teller strength distributions, beta-decay half-lives, and beta-delayed neutron emission are investigated in neutron-rich Zr and Mo isotopes within a deformed quasiparticle random-phase approximation. The approach is based on a self-consistent Skyrme Hartree-Fock mean field with pairing correlations and residual separable particle-hole and particle-particle forces. Comparison with recent measurements of half-lives stresses the important role that nuclear deformation plays in the description of beta-decay properties in this mass region.

Sarriguren, P

2010-01-01T23:59:59.000Z

289

N NE EX XT T G GE EN NE ER RA AT TI IO ON N S SA AF FE EG  

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

NE NE EX XT T G GE EN NE ER RA AT TI IO ON N S SA AF FE EG GU UA AR RD DS S I IN NI IT TI IA AT TI IV VE E ( (N NG GS SI I) ) O OP PP PO OR RT TU UN NI IT TI IE ES S F FO OR R S ST TU UD DE EN NT TS S A AN ND D Y YO OU UN NG G P PR RO OF FE ES SS SI IO ON NA AL LS S I IN NT TE ER RE ES ST TE ED D I IN N S SA AF FE EG GU UA AR RD DS S/ /N NO ON NP PR RO OL LI IF FE ER RA AT TI IO ON N The Next Generation Safeguards Initiative (NGSI) was launched by the National Nuclear Security Administration (NNSA) in FY 2008 to develop the policies, concepts, technologies, expertise, and infrastructure necessary to strengthen and sustain the international safeguards system as it evolves to meet new challenges over the next 25 years. NGSI's Human Capital Development subprogram 1 aims to revitalize and expand the international safeguards human capital base in the United States by attracting, educating, training, and retaining

290

Synthesis of Zr Doped NiO Layers on NiSi2 Linling Gu/Si-MCP Structures for Supercapacitors  

Science Conference Proceedings (OSTI)

Three-dimensional super capacitors consisting of NiSi2/silicon micro channel plates (MCPs) with Zr doped NiO layers have been fabricated. The silicon MCPs produced by electrochemical etching is utilized as a backbone of the 3D structure. Nickle layer ... Keywords: Zr doped NiO, Electrochemical properties, Silicon microchannel plate

Linling Gu; Tao Liu; Fei Wang; Shaohui Xu; Lianwei Wang; Paul K. Chu

2012-04-01T23:59:59.000Z

291

Fundamental science investigations to develop a 6-MV laser triggered gas switch for ZR: first annual report.  

Science Conference Proceedings (OSTI)

In October 2005, an intensive three-year Laser Triggered Gas Switch (LTGS) development program was initiated to investigate and solve observed performance and reliability issues with the LTGS for ZR. The approach taken has been one of mission-focused research: to revisit and reassess the design, to establish a fundamental understanding of LTGS operation and failure modes, and to test evolving operational hypotheses. This effort is aimed toward deploying an initial switch for ZR in 2007, on supporting rolling upgrades to ZR as the technology can be developed, and to prepare with scientific understanding for the even higher voltage switches anticipated needed for future high-yield accelerators. The ZR LTGS was identified as a potential area of concern quite early, but since initial assessments performed on a simplified Switch Test Bed (STB) at 5 MV showed 300-shot lifetimes on multiple switch builds, this component was judged acceptable. When the Z{sub 20} engineering module was brought online in October 2003 frequent flashovers of the plastic switch envelope were observed at the increased stresses required to compensate for the programmatically increased ZR load inductance. As of October 2006, there have been 1423 Z{sub 20} shots assessing a variety of LTGS designs. Numerous incremental and fundamental switch design modifications have been investigated. As we continue to investigate the LTGS, the basic science of plastic surface tracking, laser triggering, cascade breakdown, and optics degradation remain high-priority mission-focused research topics. Significant progress has been made and, while the switch does not yet achieve design requirements, we are on the path to develop successively better switches for rolling upgrade improvements to ZR. This report summarizes the work performed in FY 2006 by the large team. A high-level summary is followed by detailed individual topical reports.

Warne, Larry Kevin; Van Den Avyle, James A.; Lehr, Jane Marie; Rose, David (Voss Scientific, Albuquerque, NM); Krompholz, Hermann G. (Texas Tech University, Lubbock, TX); Vela, Russell (Texas Tech University, Lubbock, TX); Jorgenson, Roy Eberhardt; Timoshkin, Igor (University of Strathclyde, Glasgow, Scotland); Woodworth, Joseph Ray; Prestwich, Kenneth Randel (Voss Scientific, Albuquerque, NM); Krile, John (Texas Tech University, Lubbock, TX); Given, Martin (University of Strathclyde, Glasgow, Scotland); McKee, G. Randall; Rosenthal, Stephen Edgar; Struve, Kenneth William; Welch, Dale Robert (Voss Scientific, Albuquerque, NM); Benwell, Andrew L. (University of Missouri-Columbia, Columbia, Missouri); Kovaleski, Scott (University of Missouri-Columbia, Columbia, Missouri); LeChien, Keith, R.; Johnson, David (Titan Pulse Sciences Division); Fouracre, R.A. (University of Strathclyde, Glasgow, Scotland); Yeckel, Chris (University of Missouri-Columbia, Columbia, Missouri); Wakeland, Peter Eric (Ktech Corporation, Albuquerque, NM); Miller, A. R. (Titan Pulse Sciences Division); Hodge, Keith Conquest (Ktech Corporation, Albuquerque, NM); Pasik, Michael Francis; Savage, Mark Edward; Maenchen, John Eric; Curry, Randy D. (University of Missouri-Columbia, Columbia, Missouri); Feltz, Greg (Ktech Corporation, Albuquerque, NM); Bliss, David Emery; MacGregor, Scott (University of Strathclyde, Glasgow, Scotland); Corley, J. P. (Ktech Corporation, Albuquerque, NM); Anaya, Victor (Ktech Corporation, Albuquerque, NM); Wallace, Zachariah (Ktech Corporation, Albuquerque, NM); Thoma, Carsten (Voss Scientific, Albuquerque, NM); Neuber, Andreas. (Texas Tech University, Lubbock, TX)

2007-03-01T23:59:59.000Z

292

Determination of the displacement energy of O, Si and Zr under electron beam irradiation  

Science Conference Proceedings (OSTI)

The response of nanocrystalline, stabilizer-free cubic zirconia thin films on a Si substrate to electron beam irradiation with energies of 4, 110 and 200 keV and fluences up to {approx}1.5 x 10{sup 22} e m{sup -2} has been studied to determine the displacement energies. The 110 and 200 keV irradiations were performed in situ using a transmission electron microscope; the 4 keV irradiations were performed ex situ using an electron gun. In all three irradiations, no structural modification of the zirconia was observed, despite the high fluxes and fluences. However the Si substrate on which the zirconia film was deposited was amorphized under the 200 keV electron irradiation. Examination of the electron-solid interactions reveals that the kinetic energy transfer from the 200 keV electrons to the silicon lattice is sufficient to cause atomic displacements, resulting in amorphization. The kinetic energy transfer from the 200 keV electrons to the oxygen sub-lattice of the zirconia may be sufficient to induce defect production, however, no evidence of defect production was observed. The displacement cross-section value of Zr was found to be {approx}400 times greater than that of O indicating that the O atoms are effectively screened from the electrons by the Zr atoms, and, therefore, the displacement of O is inefficient.

Edmondson, Philip D [ORNL; Weber, William J [ORNL; Namavar, Fereydoon [University of Nebraska Medical Center; Zhang, Yanwen [ORNL

2012-01-01T23:59:59.000Z

293

Fuel element design for the enhanced destruction of plutonium in a nuclear reactor  

DOE Patents (OSTI)

A uranium-free fuel for a fast nuclear reactor comprising an alloy of Pu, Zr and Hf, wherein Hf is present in an amount less than about 10% by weight of the alloy. The fuel may be in the form of a Pu alloy surrounded by a Zr--Hf alloy or an alloy of Pu--Zr--Hf or a combination of both.

Crawford, Douglas C. (Idaho Falls, ID); Porter, Douglas L. (Idaho Falls, ID); Hayes, Steven L. (Idaho Falls, ID); Hill, Robert N. (Bolingbrook, IL)

1999-01-01T23:59:59.000Z

294

Fuel element design for the enhanced destruction of plutonium in a nuclear reactor  

DOE Patents (OSTI)

A uranium-free fuel for a fast nuclear reactor comprising an alloy of Pu, Zr and Hf, wherein Hf is present in an amount less than about 10% by weight of the alloy. The fuel may be in the form of a Pu alloy surrounded by a Zr-Hf alloy or an alloy of Pu-Zr-Hf or a combination of both.

Crawford, Douglas C.; Porter, Douglas L.; Hayes, Steven L.; Hill, Robert N.

1997-12-01T23:59:59.000Z

295

Fuel element design for the enhanced destruction of plutonium in a nuclear reactor  

DOE Patents (OSTI)

A uranium-free fuel for a fast nuclear reactor comprising an alloy of Pu, Zr and Hf, wherein Hf is present in an amount less than about 10% by weight of the alloy. The fuel may be in the form of a Pu alloy surrounded by a Zr--Hf alloy or an alloy of Pu--Zr--Hf or a combination of both. 7 figs.

Crawford, D.C.; Porter, D.L.; Hayes, S.L.; Hill, R.N.

1999-03-23T23:59:59.000Z

296

Cyclic nanoindentation studies on CrN thin films prepared by RF sputtering on Zr-based metallic glass  

Science Conference Proceedings (OSTI)

Cyclic nanoindentation tests were carried out to study the influence of the chromium nitride thin films on the mechanical properties of Zr-based metallic glass. Chromium nitride thin coatings have been deposited on Zr{sub 50}Cu{sub 40}Al{sub 10} metallic glass substrate by RF sputtering. The deposition process was done at room temperature under nitrogen reactive gas using a metallic chromium target. The CrN films have a thickness of 300 nm. Several cyclic nanoindentation measurements were conducted on CrN films and Zr{sub 50}Cu{sub 40}Al{sub 10} metallic glass substrate samples at various loading rate values. We have found that the coated metallic glass sample shows high mechanical properties such as hardness and reduced elastic modulus. Cyclic nanoindentation results show a hardening behaviour for these CrN coatings. Moreover, the CrN coated on Zr-based metallic glass was found to have a high value of resistance to crack propagation, as being analysed through the SEM pictures of the residual Vickers indentation impressions.

Jellad, A.; Benameur, T. [Laboratoire de Genie Mecanique LGM-MA05, ENIM, Av. Ibn El Jazzar, 5019 Monastir (Tunisia); Labdi, S. [Laboratoire d'etudes des Milieux Nanometriques, UEVE, Bd F. Mitterand, 91025 Evry Cedex (France)

2011-01-17T23:59:59.000Z

297

CRYSTALLINE-TO-AMORPHOUS TRANSFORMATION OF INTERMETALLIC COMPOUNDS IN THE ZR-FE-M SYSTEM INDUCED BY IRRADIATION  

E-Print Network (OSTI)

such alloys are Zircaloy- 2 used in BWR, Zircaloy-4 used in PWR, the Canadian Zr-2.5%Nb used in CANDU pressure predict- able. This is especially true for high-fluence components, such as pressure tubes in CANDU

Motta, Arthur T.

298

Selected Sub-grantees of the Department of Energy's American Recovery and Reinvestment Act of 2009 … Illinois State Energy Program, OAS-RA-13-19  

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

Reports Reports Selected Sub-grantees of the Department of Energy's American Recovery and Reinvestment Act - Illinois State Energy Program OAS-RA-13-19 April 2013 Department of Energy Washington, DC 20585 April 30, 2013 MEMORANDUM FOR THE ASSISTANT SECRETARY FOR ENERGY EFFICIENCY AND RENEWABLE ENERGY FROM: Rickey R. Hass Deputy Inspector General for Audits and Inspections Office of Inspector General SUBJECT: INFORMATION: Examination Reports on "Selected Sub-grantees of the Department of Energy's American Recovery and Reinvestment Act - Illinois State Energy Program" BACKGROUND The Department of Energy's (Department) State Energy Program (SEP) provides grants to states, territories, and the District of Columbia to support their energy priorities and fund projects that

299

Lessons Learned/Best Practices during the Department of Energy's Implementation of the American Recovery and Reinvestment Act of 2009, OAS-RA-12-03  

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

Lessons Learned/Best Practices Lessons Learned/Best Practices during the Department of Energy's Implementation of the American Recovery and Reinvestment Act of 2009 OAS-RA-12-03 January 2012 Department of Energy Washington, DC 20585 January 18, 2012 MEMORANDUM FOR THE SECRETARY FROM: Gregory H. Friedman Inspector General SUBJECT: INFORMATION: Special Report on "Lessons Learned/Best Practices during the Department of Energy's Implementation of the American Recovery and Reinvestment Act of 2009" BACKGROUND The American Recovery and Reinvestment Act of 2009 (Recovery Act) was signed into law on February 17, 2009, as a way to jumpstart the U.S. economy, create or save millions of jobs, spur technological advances in science and health, and invest in the Nation's energy future. As part of

300

The Department of Energy's Management of the Award of a $150 Million Recovery Act Grant to LG Chem Michigan Inc., OAS-RA-13-10  

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

Management of the Award of a $150 Management of the Award of a $150 Million Recovery Act Grant to LG Chem Michigan Inc. OAS-RA-13-10 February 2013 Department of Energy Washington, DC 20585 February 8, 2013 MEMORANDUM FOR THE UNDER SECRETARY OF ENERGY FROM: Gregory H. Friedman Inspector General SUBJECT: INFORMATION: Special Report on "The Department of Energy's Management of the Award of a $150 Million Recovery Act Grant to LG Chem Michigan Inc." BACKGROUND The Department of Energy's Vehicle Technologies Program was established to develop and deploy efficient and environmentally friendly highway transportation technologies to reduce the Nation's dependence on foreign oil and provide greater energy security. The Vehicle Technologies Program received $2.4 billion under the American Recovery and Reinvestment Act

Note: This page contains sample records for the topic "ra zr hf" 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

The Department of Energy's Weatherization Assistance Program under the American Recovery and Reinvestment Act in the State of Tennessee, OAS-RA-11-17  

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

U.S. Department of Energy Office of Inspector General Office of Audits and Inspections Audit Report The Department of Energy's Weatherization Assistance Program under the American Recovery and Reinvestment Act in the State of Tennessee OAS-RA-11-17 September 2011 Department of Energy Washington, DC 20585 September 19, 2011 MEMORANDUM FOR THE ACTING ASSISTANT SECRETARY FOR ENERGY EFFICIENCY AND RENEWABLE ENERGY FROM: George W. Collard Assistant Inspector General for Audits Office of Inspector General SUBJECT: INFORMATION: Audit Report on "The Department of Energy's Weatherization Assistance Program under the American Recovery and Reinvestment Act in the State of Tennessee" BACKGROUND Under the American Recovery and Reinvestment Act of 2009 (Recovery Act), the Department of

302

The Department of Energy's American Recovery and Reinvestment Act-Ohio State Energy Program, OAS-RA-L-12-07  

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

The Department of Energy's The Department of Energy's American Recovery and Reinvestment Act - Ohio State Energy Program OAS-RA-L-12-07 September 2012 Department of Energy Washington, DC 20585 September 20, 2012 MEMORANDUM FOR THE ASSISTANT SECRETARY FOR ENERGY EFFICIENCY AND RENEWABLE ENERGY for FROM: Rickey R. Hass Deputy Inspector General for Audits and Inspections Office of Inspector General SUBJECT: INFORMATION: Examination Report on "The Department of Energy's American Recovery and Reinvestment Act - Ohio State Energy Program" BACKGROUND The attached reports present the results of examinations of selected sub-grantee awardees compliance with Federal and State laws, regulations and program guidelines applicable to the State Energy Program (SEP) in the State of Ohio (Ohio). The Office of Inspector General

303

The Department of Energy's American Recovery and Reinvestment Act - Tennessee State Energy Program, 0AS-RA-L-12-04  

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

Tennessee Tennessee State Energy Program OAS-RA-L-12-04 April 2012 Department of Energy Washington, DC 20585 April 30, 2012 MEMORANDUM FOR THE ASSISTANT SECRETARY FOR ENERGY EFFICIENCY AND RENEWABLE ENERGY Daniel M. Weeber, Director Eastern Audits Division Office of Inspector General SUBJECT: INFORMATION: Audit Report on "The Department of Energy's American Recovery and Reinvestment Act - Tennessee State Energy Program" BACKGROUND The Department of Energy's Office of Energy Efficiency and Renewable Energy (EERE) provided grants to states, territories, and the District of Columbia (states) through the State Energy Program (SEP). The American Recovery and Reinvestment Act of 2009 increased the SEP by $3.1 billion using the existing grant formula. Grant awards to states were designed to

304

The Department of Energy's Energy Efficiency and Conservation Block Grant Program Funded under the American Recovery and Reinvestment Act for the State of Pennsylvania, OAS-RA-L-11-11  

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

State of State of Pennsylvania OAS-RA-L-11-11 September 2011 Department of Energy Washington, DC 20585 September 23, 2011 MEMORANDUM FOR PROGRAM MANAGER, OFFICE OF WEATHERIZATION AND INTERGOVERNMENTAL PROGRAM MANAGER, GOLDEN FIELD OFFICE FROM: Joanne Hill, Director Energy Audits Division Office of Inspector General SUBJECT: INFORMATION: Audit Report on "The Department of Energy's Energy Efficiency and Conservation Block Grant Program Funded under the American Recovery and Reinvestment Act for the State of Pennsylvania" Audit Report Number: OAS-RA-L-11-11 BACKGROUND The Department of Energy's (Department) Energy Efficiency and Conservation Block Grant Program (Program), funded for the first time by the American Recovery and Reinvestment Act

305

Spectroscopic differentiation between O-atom vacancy and divacancy defects, respectively, in TiO2 and HfO2 by X-ray absorption spectroscopy  

Science Conference Proceedings (OSTI)

Defect state features have been detected in second derivative O K edge spectra for thin films of nano-crystalline TiO"2 and HfO"2. Based on soft X-ray photoelectron band edge spectra, and the occurrence of occupied band edge 4f states in Gd(Sc,Ti)O"3, ... Keywords: Bound resonance states, Divacancies, Immobile and mobile vacancies, Monovacancies, Pre-edge regime, X-ray absorption spectroscopy

G. Lucovsky; K. -B. Chung; J. -W. Kim; D. Norlund

2009-07-01T23:59:59.000Z

306

Multinucleon transfer reactions for the {sup 28}Si+{sup 90,94}Zr systems in the region below and near the Coulomb barrier  

Science Conference Proceedings (OSTI)

Measurements on multinucleon transfer reactions for {sup 28}Si+{sup 90,94}Zr systems were performed at sub- and near-barrier energies. The fact that {sup 90}Zr has a closed neutron shell (N = 50) and {sup 94}Zr has four neutrons outside the closed shell, allows us to investigate the effects of shell closure and pairing correlation on multinucleon transfer mechanism. The experiment was performed with pulsed {sup 28}Si beam using the Heavy Ion Reaction Analyzer (HIRA) at Inter University Accelerator Centre (IUAC), New Delhi. Based on the Q-value considerations, it turned out that pickup channels were neutron transfer whereas stripping channels were proton transfer. For the {sup 28}Si+{sup 90}Zr system, the values of the slope parameter for two-neutron pickup turned out to be less than that for one-neutron pickup. The values of the slope parameter were almost the same for two-, three-, and four-neutron pickup channels in the case of the {sup 28}Si+{sup 94}Zr system. The transfer probabilities in the case of the {sup 28}Si+{sup 94}Zr system were much larger than those for the {sup 28}Si+{sup 90}Zr system, further supporting the fact that there is a correlation between the transfer channels and sub-barrier fusion cross-section enhancement. An odd-even staggering was observed in the extracted transfer probabilities at the barrier radius implying the role of pairing correlation in transfer reactions.

Kalkal, Sunil; Mandal, S.; Garg, Ritika; Saxena, Mansi; Goyal, Savi; Verma, S.; Kumar, Suresh; Singh, R. [Department of Physics and Astrophysics, University of Delhi, Delhi (India); Madhavan, N.; Jhingan, A.; Nath, S.; Gehlot, J.; Mohanto, Gayatri [Inter University Accelerator Centre, New Delhi (India); Prasad, E. [Department of Physics, Calicut University, Kerala (India); Sandal, Rohit; Behera, B. R. [Department of Physics, Panjab University, Chandigah (India); Pramanik, U. D. [Saha Institute of Nuclear Physics, Kolkata (India); Sinha, A. K. [UGC-DAE Consortium for Scientific Research, Kolkata (India)

2011-05-15T23:59:59.000Z

307

Pre- and post-irradiation characterization and properties measurements of ZrC coated surrogate TRISO particles  

SciTech Connect

Zirconium carbide is a candidate to either replace or supplement silicon carbide as a coating material in TRISO fuel particles for high temperature gas-cooled reactor fuels. Six sets of ZrC coated surrogate microsphere samples, fabricated by the Japan Atomic Energy Agency using the fluidized bed chemical vapor deposition method, were irradiated in the High Flux Isotope Reactor at the Oak Ridge National Laboratory. These developmental samples available for the irradiation experiment were in conditions of either as-fabricated coated particles or particles that had been heat-treated to simulate the fuel compacting process. Five sets of samples were composed of nominally stoichiometric compositions, with the sixth being richer in carbon (C/Zr = 1.4). The samples were irradiated at 800 and 1250 C with fast neutron fluences of 2 and 6 dpa. Post-irradiation, the samples were retrieved from the irradiation capsules followed by microstructural examination performed at the Oak Ridge National Laboratory's Low Activation Materials Development and Analysis Laboratory. This work was supported by the US Department of Energy Office of Nuclear Energy's Advanced Gas Reactor program as part of International Nuclear Energy Research Initiative collaboration with Japan. This report includes progress from that INERI collaboration, as well as results of some follow-up examination of the irradiated specimens. Post-irradiation examination items included microstructural characterization, and nanoindentation hardness/modulus measurements. The examinations revealed grain size enhancement and softening as the primary effects of both heat-treatment and irradiation in stoichiometric ZrC with a non-layered, homogeneous grain structure, raising serious concerns on the mechanical suitability of these particular developmental coatings as a replacement for SiC in TRISO fuel. Samples with either free carbon or carbon-rich layers dispersed in the ZrC coatings experienced negligible grain size enhancement during both heat treatment and irradiation. However, these samples experienced irradiation induced softening similar to stoichiometric ZrC samples.

Vasudevamurthy, Gokul [ORNL; Katoh, Yutai [ORNL; Hunn, John D [ORNL; Snead, Lance Lewis [ORNL

2010-09-01T23:59:59.000Z

308

Rapid Relaxation and Embrittlement of Zr-based Bulk Metallic Glasses by Electropulsing  

Science Conference Proceedings (OSTI)

Mechanical relaxation and embrittlement of Zr52.5Cu17.9Ni14.6Al10Ti5 bulk metallic glasses were achieved rapidly by the direct current electropulsing treatment. The temperature profile was recorded by an infrared camera and it was found to be non-uniform in the treated specimen. Specifically, temperatures below the glass transition temperature, near and above the crystallization temperature could be ach- ieved, respectively, at different locations in the same treated specimen. Two sets of nanoindentation were conducted. While the first set investigated the mechanical properties of three individually elec- tropulsed specimens with different conditions, the second set indented a single treated specimen along its temperature gradient. Both sets of indentation revealed that by Joule heating to different tempera- tures, relaxation, embrittlement, and crystallization were significantly accelerated by electrical pulses. Results suggest that electropulsing provides an opportunity to simultaneously achieve plastic forming and mechanical property control of metallic glasses.

Yiu, P [Department of Materials Science and Engineering, National Taiwan University, Taipei 106, Taiwan; Chen, Y. C. [National Taiwan University of Science & Technology; Chu, J. P. [National Taiwan Ocean University; Chang, S Y [National Chung Hsing University; Bei, Hongbin [ORNL; Jang, J. S.C. [National Central University, Jhongli 32001, Taiwan; Hsueh, C. H. [Department of Materials Science and Engineering, National Taiwan University, Taipei 106, Taiwan

2013-01-01T23:59:59.000Z

309

Measurement of the $^{90, 92}$Zr(p,$?$)$^{91,93}$Nb reactions for the nucleosynthesis of elements around A=90  

E-Print Network (OSTI)

Cross section measurements of the reactions $^{90, 92}$Zr(p,$\\gamma$)$^{91,93}$Nb were performed using the NSCL SuN detector at the University of Notre Dame. These reactions are part of the nuclear reaction flow for the synthesis of the light p nuclei. For the $^{90}$Zr(p,$\\gamma$)$^{91}$Nb reaction the new measurement resolves the disagreement between previous results. For the $^{92}$Zr(p,$\\gamma$)$^{93}$Nb reaction the present work reports the first measurement of this reaction cross section. Both reaction cross sections are compared to theoretical calculations and a very good agreement with the standard NON-SMOKER model is observed.

A. Spyrou; S. J. Quinn; A. Simon; T. Rauscher; A. Battaglia; A. Best; B. Bucher; M. Couder; P. A. DeYoung; A. C. Dombos; X. Fang; J. Gorres; A. Kontos; Q. Li; L. Y. Lin; A. Long; S. Lyons; B. S. Meyer; A. Roberts; D. Robertson; K. Smith; M. K. Smith; E. Stech; B. Stefanek; W. P. Tan; X. D. Tang; M. Wiescher

2013-10-21T23:59:59.000Z

310

Current scaling of axially radiated power in dynamic hohlraums and dynamic hohlraum load design for ZR.  

SciTech Connect

We present designs for dynamic hohlraum z-pinch loads on the 28 MA, 140 ns driver ZR. The scaling of axially radiated power with current in dynamic hohlraums is reviewed. With adequate stability on ZR this scaling indicates that 30 TW of axially radiated power should be possible. The performance of the dynamic hohlraum load on the 20 MA, 100 ns driver Z is extensively reviewed. The baseline z-pinch load on Z is a nested tungsten wire array imploding onto on-axis foam. Data from a variety of x-ray diagnostics fielded on Z are presented. These diagnostics include x-ray diodes, bolometers, fast x-ray imaging cameras, and crystal spectrometers. Analysis of these data indicates that the peak dynamic radiation temperature on Z is between 250 and 300 eV from a diameter less than 1 mm. Radiation from the dynamic hohlraum itself or from a radiatively driven pellet within the dynamic hohlraum has been used to probe a variety of matter associated with the dynamic hohlraum: the tungsten z-pinch itself, tungsten sliding across the end-on apertures, a titanium foil over the end aperture, and a silicon aerogel end cap. Data showing the existence of asymmetry in radiation emanating from the two ends of the dynamic hohlraum is presented, along with data showing load configurations that mitigate this asymmetry. 1D simulations of the dynamic hohlraum implosion are presented and compared to experimental data. The simulations provide insight into the dynamic hohlraum behavior but are not necessarily a reliable design tool because of the inherently 3D behavior of the imploding nested tungsten wire arrays.

Mock, Raymond Cecil; Nash, Thomas J.; Sanford, Thomas W. L.

2007-03-01T23:59:59.000Z

311

A comparison of crystalline and molten structures of zirconolite (CaZrTi?O?), a potential plutonium wasteform medium, by molecular dynamics simulation and topological analysis  

E-Print Network (OSTI)

Molecular dynamics simulations of the ceramic compound zirconolite (CaZrTi?O?), a potential crystalline wasteform host for plutonium, were carried out for ideal and experimental crystalline forms and a simulated molten ...

Rich, Sarah Celeste

2008-01-01T23:59:59.000Z

312

Rainfall Measurement Error by WSR-88D Radars due to Variations in ZR Law Parameters and the Radar Constant  

Science Conference Proceedings (OSTI)

An investigation is made of the extent to which variations in ZR (reflectivity factorrainfall rate) relations can explain the systematically large offsets of radar-measured rainfall from rain gauge measurements as observed with some National ...

C. W. Ulbrich; L. G. Lee

1999-08-01T23:59:59.000Z

313

REACTIVE FORCE FIELDS FOR Y-DOPED BaZrO3 ELECTROLYTE AND NI-ANODE. POTENTIAL CATHODE MATERIALS FOR APPLICATION IN PROTON CERAMIC FUEL CELLS  

DOE Green Energy (OSTI)

Based on quantum mechanical data obtained for the Y-doped BaZrO{sub 3} electrolyte and Ni-anode Reactive Force Field parameters have been developed for further molecular dynamics simulations of the proton diffusion and electrode/electrolyte interfaces. Electronic and atomic structures of different terminations of the (001) BaZrO{sub 3} surface have been studied using first-principles calculations. Several potential cathode materials for the Y-doped BaZrO{sub 3} system were synthesized via glycine nitrate combustion method. Of the five potential cathode materials examined BaZr{sub 0.40}Pr{sub 0.40}Gd{sub 0.20}O{sub 3} and BaZr{sub 0.60}Y{sub 0.20}Co{sub 0.20}O{sub 3} appear to be the most promising for further applications in proton ceramic fuel cells. Fuel cell test of a Y-doped BaZrO{sub 3} thin film using platinum ink for both electrodes have been performed. The obtained results shows that a robust method for fabricating crack-free thin membranes, as well as methods for sealing anode and cathode chambers, have successfully been developed.

Boris Merinov; Adri van Duin; Sossina Haile; William A. Goddard III

2004-10-30T23:59:59.000Z

314

Proton nuclear magnetic resonance studies of hydrogen diffusion and electron tunneling in Ni-Nb-Zr-H glassy alloys  

Science Conference Proceedings (OSTI)

Using the Fourier transform of the echo envelope, the proton line shapes, spin-lattice relaxation time, and spin-spin relaxation time have been measured in a (Ni{sub 0.36}Nb{sub 0.24}Zr{sub 0.40}){sub 90}H{sub 10} glassy alloy at 1.83 T ({approx}78 MHz) and at temperatures between 1.8 and 300 K. First, the spectral line width decreases abruptly between 1.8 and 2.1 K. Next, it remains almost constant at 13 kHz up to {approx}150 K. Finally, the line width decreases as the temperature increases from {approx}150 to 300 K. The initial decrease in the spectral line width is ascribed to the distribution of the external field, which is caused by the penetration of vortices in the superconducting state. The subsequent leveling off in the spectral line width is ascribed to the dipole-dipole interaction between protons when hydrogen atoms are trapped into vacancies among the Zr-centered icosahedral Zr{sub 5}Ni{sub 5}Nb{sub 3} clusters. The final decrease in the spectral line width is ascribed to the motional narrowing of the width that is caused by the movement of hydrogen atoms. The temperature dependences of the spin-lattice and spin-spin relaxation time showed that at temperature above 150 K and the activation energy of 8.7 kJ/mol allowed the hydrogen atoms to migrate among the clusters. The distance between the hydrogen atoms is estimated to be 2.75 A. Hydrogen occupancies among clusters in the (Ni{sub 0.36}Nb{sub 0.24}Zr{sub 0.40}){sub 90}H{sub 10} glassy alloy play an important role in the diffusion behavior and in the electronic properties of this alloy.

Niki, Haruo; Okuda, Hiroyuki; Oshiro, Morihito; Yogi, Mamoru [Department of Physics, Faculty of Science, University of the Ryukyus, Nishihara, Okinawa 903-0213 (Japan); Seki, Ichiro; Fukuhara, Mikio [Institute for Materials Research, Tohoku University, Sendai 980-8577 (Japan)

2012-06-15T23:59:59.000Z

315

The Effect of Zn Addition on the Oxidation State of Cobalt in Co/ZrO2 Catalysts  

Science Conference Proceedings (OSTI)

The effect of Zn promotion on the activity and selectivity of Co/ZrO{sub 2} catalysts for ethanol steam reforming was investigated. The catalysts were synthesized by incipient wetness impregnation and characterized using BET measurements, temperature programmed reduction, X-ray diffraction, transmission electron microscopy, and X-ray electron spectroscopy. Compared to Co/ZrO{sub 2} catalyst, a higher ethanol conversion and a lower CH{sub 4} selectivity were observed for the Co/ZrO{sub 2} catalyst promoted with Zn. It was found that addition of Zn inhibits the oxidation of metallic cobalt (Co{sup 0}) particles, which results in a higher ratio of Co{sup 0}/Co{sup 2+} present in the Zn promoted Co/ZrO{sub 2} catalyst. These results suggest that metallic cobalt (Co{sup 0}) is responsible for ethanol conversion via ethanol dehydrogenation whereas Co{sup 2+} plays a role in the CH{sub 4} formation. For both catalysts, the experimental results show that CH4 is mainly produced via CO and/or CO{sub 2} methanation. TPR measurements, on the other hand, show Zn addition inhibits the reduction of Co{sup 2+} and Co{sup 3+}, which would mislead the conclusion that oxidized Co is required to reduce the CH{sub 4} formation. Therefore, TPR may not be appropriate to correlate the degree of metal reducibility (in this case Co{sup 0}) with the catalyst activity for reactions such as ethanol steam reforming where oxidizing conditions exist.

Lebarbier, Vanessa MC; Karim, Ayman M.; Engelhard, Mark H.; Wu, Yu; Xu, Bo-Qing; Petersen, Eric J.; Datye, Abhaya K.; Wang, Yong

2011-09-01T23:59:59.000Z

316

LBNL-4183E-rev1 N NA AT TU UR RA AL L G GA AS S V VA AR RI  

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

4183E-rev1 4183E-rev1 N NA AT TU UR RA AL L G GA AS S V VA AR RI IA AB BI IL LI IT TY Y I IN N C CA AL LI IF FO OR RN NI IA A: : E EN NV VI IR RO ON NM ME EN NT TA AL L I IM MP PA AC CT TS S A AN ND D D DE EV VI IC CE E P PE ER RF FO OR RM MA AN NC CE E E EX XP PE ER RI IM ME EN NT TA AL L E EV VA AL LU UA AT TI IO ON N O OF F I IN NS ST TA AL LL LE ED D C CO OO OK KI IN NG G E EX XH HA AU US ST T F FA AN N P PE ER RF FO OR RM MA AN NC CE E Brett C. Singer, William W. Delp and Michael G. Apte Indoor Environment Department Atmospheric Sciences Department Environmental Energy Technologies Division July 2011 (Revised February 2012) Disclaimer 1 This document was prepared as an account of work sponsored by the United States Government. While this document is believed to contain correct information, neither the United States Government nor any agency thereof, nor The Regents of the University of California, nor any of

317

Negative effect of crystallization on the mechanism of laser damage in a HfO{sub 2}/SiO{sub 2} multilayer  

Science Conference Proceedings (OSTI)

Elucidation of the mechanisms of laser damage is indispensable in realizing high resistance mirrors for the next generation of ultra-short pulse high intensity lasers. In this study, the surface and a section of the laser-damaged area of a laser mirror were observed with a laser microscope and a transmission electron microscope (cross-sectional TEM), respectively. A grain boundary of HfO{sub 2} microcrystal was observed in the damaged area. This observation and an evaluation of the mirror's damage resistance showed that the formation of crystals in the multilayer mirror is one of the major determinants of damage resistance.

Tateno, Ryo [Shimadzu Corporation, 1, Nishinokyo-Kuwabaracho Nakagyo-ku, Kyoto 604-8511 (Japan); Okada, Hajime; Otobe, Tomohito; Kawase, Keigo; Koga, James K.; Kosuge, Atsushi; Nagashima, Keisuke; Sugiyama, Akira [Kansai Photon Science Institute, Japan Atomic Energy Agency, 8-1-7 Umemidai, Kizugawa-shi, Kyoto 619-0215 (Japan); Kashiwagi, Kunihiro [Department of Electrical and Communication Engineering, Faculty of Engineering, Toyo University, 2100, Kujirai Kawagoe-shi, Saitama 350-8585 (Japan)

2012-12-15T23:59:59.000Z

318

Start Up of a Nb-1%Zr Potassium Heat Pipe From the Frozen State  

E-Print Network (OSTI)

The start up of a liquid-metal heat pipe from the frozen state was evaluated experimentally with a Nb-1%Zr heat pipe with potassium as the working fluid. The heat pipe was fabricated and tested at Los Alamos National Laboratory. RF induction heating was used to heat 13 cm of the 1-m-long heat pipe. The heat pipe and test conditions are well characterized so that the test data may be used for comparison with numerical analyses. An attempt was made during steady state tests to calibrate the heat input so that the heat input would be known during the transient cases. The heat pipe was heated to 675C with a throughput of 600 W and an input heat flux of 6 W/cm 2 . Steady state tests, start up from the frozen state, and transient variations from steady state were conducted. Nomenclature English L length m . mass flow rate PS power setting r radius q heat flux q" heat flux per unit area T temperature v voltage V volume x axial location on heat pipe Greek e porosity r resist...

Since Its Founding; David E. Glass; Michael A. Merrigan; J. Tom Sena

1998-01-01T23:59:59.000Z

319

As-cast microstructures in U-Pu-Zr alloy fuel pins with 5-8 wt% minor actinides and 0-1.5 wt% rare-earth elements  

Science Conference Proceedings (OSTI)

The Idaho National Laboratory (INL) is investigating UPuZr alloys with low concentrations of minor actinides (Np and Am) and rare-earth elements (La, Ce, Pr, and Nd) as possible nuclear fuels to be used to transmute minor actinides. Alloys with compositions 60U20Pu 3Am2Np15Zr, 42U30Pu5Am3Np20Zr, 59U20Pu3Am2Np1RE15Zr, 58.5U20Pu 3Am2Np1.5RE15Zr, 41U30Pu5Am3Np1RE20Zr, and 40.5U30Pu5Am3Np1.5RE 20Zr (where numbers represent weight percents of each element and RE is a rare-earth alloy consisting of 6% La, 16% Pr, 25% Ce, and 53% Nd by weight) were arc-melted and vacuum cast as fuel pins approximately 4 mmin diameter. The as-cast pins were sectioned, polished, and examined by scanning electron microscopy. Each alloy contains high-Zr inclusions surrounded by a high-actinide matrix. Alloys with rare-earth elements also contain inclusions that are high in these elements. Within the matrix, concentrations of U and Zr vary inversely, while concentrations of Np and Pu appear approximately constant. Am occurs in the matrix and with some high-rare-earth inclusions, and occasionally as high-Am inclusions in samples without rare-earth elements.

Dawn E. Janney; J. Rory Kennedy

2010-11-01T23:59:59.000Z

320

As-cast microstructures in U-Pu-Zr alloy fuel pins with 5-8 wt.% minor actinides and 0- 1.5 wt% rare-earth elements  

Science Conference Proceedings (OSTI)

The Idaho National Laboratory (INL) is investigating U-Pu-Zr alloys with low concentrations of minor actinides (Np, Am) and rare-earth elements (La, Ce, Pr, Nd) as possible nuclear fuels to be used to transmute minor actinides. Alloys with compositions 60U-20Pu-3Am-2Np-15Zr, 42U-30Pu-5Am-3Np-20Zr, 59U-20Pu-3Am-2Np-1RE-15Zr, 58.5U-20Pu-3Am-2Np-1.5RE-15Zr, 41U-30Pu-5Am-3Np-1RE-20Zr, and 40.5U-30Pu-5Am-3Np-1.5RE-20Zr (where numbers represent weight percents of each element and RE is a rare-earth alloy consisting of 6% La, 16% Pr, 25% Ce, and 53% Nd by weight) were arc-melted and vacuum cast as fuel pins approximately 4 mm in diameter. The pins were sectioned, polished, and examined by scanning electron microscopy. Each alloy contains high-Zr inclusions surrounded by a high-actinide matrix. Alloys with lanthanides also contain high-RE inclusions. Within the matrix, concentrations of U and Zr vary inversely, while concentrations of Np and Pu appear approximately constant. Am occurs in the matrix and with some high-RE inclusions, and occasionally as high-Am inclusions in samples without REs.

Dawn E. Janney; J. Rory Kennedy

2010-11-01T23:59:59.000Z

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321

Synthesis, crystal structure, and properties of the rhombohedral modification of the thiospinel CuZr{sub 1.86(1)}S{sub 4}  

SciTech Connect

The rhombohedral modification of the thiospinel, CuZr{sub 1.86(1)}S{sub 4}, has been synthesized by the reaction of the constituent elements in an alkali metal halide flux and structurally characterized by single crystal X-ray diffraction techniques. The title compound crystallizes in the rhombohedral space group D{sub 3d}{sup 5}-R3-barm (no. 166, a=7.3552(2) A, c=35.832(2) A, V=1678.76(13) A{sup 3}, Z=12, and R/wR=0.0239/0.0624). The structure is composed of close packed S layers, with a stacking order of ...ABCBCABABCACAB....along the c axis. The Zr and Cu atoms occupy the octahedral and tetrahedral holes between S layers, respectively. Three different kinds of S-M-S layers exist in the structure: layer I has fully occupied Zr and Cu sites, layer II has fully occupied Zr sites but no Cu, and layer III has partially occupied Zr and fully occupied Cu sites. Transport and optical properties indicate that the title compound is a small band gap (1.26 eV) n-type semiconductor. - Graphical abstract: The projected view of the rhombohedral modification, CuZr{sub 1.86(1)}S{sub 4}, down the [100] direction. Large letters denote the packing sequence of the S atoms (yellow circles) along the c axis. Zr (black circles) and Cu (red circles) atoms occupy the octahedral and tetrahedral holes, respectively, between close packed S layers.

Dong, Yongkwan [Baker Laboratory, Department of Chemistry, Cornell University, Ithaca, NY 14853-1301 (United States); McGuire, Michael A. [Department of Physics, Cornell University, Ithaca, NY 14853-1301 (United States); Yun, Hoseop, E-mail: hsyun@ajou.ac.k [Division of Energy Research System and Department of Chemistry, Ajou University, Suwon 442-749 (Korea, Republic of); DiSalvo, Francis J., E-mail: fjd3@cornell.ed [Baker Laboratory, Department of Chemistry, Cornell University, Ithaca, NY 14853-1301 (United States)

2010-03-15T23:59:59.000Z

322

Tungsten isotopic compositions in stardust SiC grains from the Murchison meteorite: Constraints on the s-process in the Hf-Ta-W-Re-Os region  

E-Print Network (OSTI)

We report the first tungsten isotopic measurements in stardust silicon carbide (SiC) grains recovered from the Murchison carbonaceous chondrite. The isotopes 182W, 183W, 184W, 186W and 179Hf, 180Hf were measured on both an aggregate (KJB fraction) and single stardust SiC grains (LS+LU fraction) believed to have condensed in the outflows of low-mass carbon-rich asymptotic giant branch (AGB) stars with close-to-solar metallicity. The SiC aggregate shows small deviations from terrestrial (=solar) composition in the 182W/184W and 183W/184W ratios, with deficits in 182W and 183W with respect to 184W. The 186W/184W ratio, however, shows no apparent deviation from the solar value. Tungsten isotopic measurements in single mainstream stardust SiC grains revealed lower than solar 182W/184W, 183W/184W, and 186W/184W ratios. We have compared the SiC data with theoretical predictions of the evolution of W isotopic ratios in the envelopes of AGB stars. These ratios are affected by the slow neutron-capture process and match...

vila, J N; Ireland, T R; Gyngard, F; Zinner, E; Cristallo, S; Holden, P; Buntain, J; Amari, S; Karakas, A

2011-01-01T23:59:59.000Z

323

HfO2 Gate Dielectric on (NH4)2S Passivated (100) GaAs Grown by Atomic Layer Deposition  

Science Conference Proceedings (OSTI)

The interface between hafnium oxide grown by atomic layer deposition and (100) GaAs treated with HCl cleaning and (NH{sub 4}){sub 2}S passivation has been characterized. Synchrotron radiation photoemission core level spectra indicated successful removal of the native oxides and formation of passivating sulfides on the GaAs surface. Layer-by-layer removal of the hafnia film revealed a small amount of As{sub 2}O{sub 3} formed at the interface during the dielectric deposition. Traces of arsenic and sulfur out-diffusion into the hafnia film were observed after a 450 C post-deposition anneal, and may be the origins for the electrically active defects. Transmission electron microscopy cross section images showed thicker HfO{sub 2} films for a given precursor exposure on S-treated GaAs versus the non-treated sample. In addition, the valence-band and the conduction-band offsets at the HfO{sub 2}/GaAs interface were deduced to be 3.18 eV and a range of 0.87-0.97 eV, respectively. It appears that HCl+(NH{sub 4})2{sub S} treatments provide a superior chemical passivation for GaAs and initial surface for ALD deposition.

Chen, P.T.; /Stanford U., Materials Sci. Dept.; Sun, Y.; /SLAC, SSRL; Kim, E.; McIntyre, P.C.; /Stanford U., Materials Sci. Dept.; Tsai, W.; Garner, M.; /Intel, Santa Clara; Pianetta, P.; /SLAC, SSRL; Nishi, Y.; /Stanford U., Elect. Eng. Dept.; Chui, C.O.; /UCLA

2007-09-28T23:59:59.000Z

324

New Standardization of Ra-228  

Science Conference Proceedings (OSTI)

... the age of formation of the radiobarite (a common constituent of scale and sludge deposits that form in oil-field production equipment) contaminant. ...

2012-06-27T23:59:59.000Z

325

Synthesis, Crystal Structure, and Properties of the Rhomboheral Modification of the Thiospinel CuZr1.86(1)S4  

SciTech Connect

The rhombohedral modification of the thiospinel, CuZr{sub 1.86(1)}S{sub 4}, has been synthesized by the reaction of the constituent elements in an alkali metal halide flux and structurally characterized by single crystal X-ray diffraction techniques. The title compound crystallizes in the rhombohedral space group D{sub 3d}{sup 5}-R{bar 3}m (166, a=7.3552(2) {angstrom}, c=35.832(2) {angstrom}, V=1678.76(13) {angstrom}{sup 3}, Z=12, and R/wR=0.0239/0.0624). The structure is composed of close packed S layers, with a stacking order of ABCBCABABCACAB along the c axis. The Zr and Cu atoms occupy the octahedral and tetrahedral holes between S layers, respectively. Three different kinds of S-M-S layers exist in the structure: layer I has fully occupied Zr and Cu sites, layer II has fully occupied Zr sites but no Cu, and layer III has partially occupied Zr and fully occupied Cu sites. Transport and optical properties indicate that the title compound is a small band gap (1.26 eV) n-type semiconductor.

Dong, Yongkwan [Cornell University; McGuire, Michael A [ORNL; Hoseop, Yun [Ajou University, Suwon, South Korea; DiSalvo, Francis J. [Cornell University

2009-01-01T23:59:59.000Z

326

Testing of Potential Inhibitors for H ingress due to Aqueous Corrosion of Zr-2.5Nb  

Science Conference Proceedings (OSTI)

This report describes a study on the effect of six chemical agents on the rate of corrosion and hydrogen ingress into Zr-2.5Nb. The alloy is used for pressure tubes in modern CANDU reactors. The testing procedure involved aqueous autoclaving of pre-analyzed thin coupons at 350 degrees Celsius for 30 days in solutions containing the tested compounds. Results from post-exposure analyses were compared to values from a reference experiment (without potential inhibiting agents). The overall results indicate t...

2000-07-14T23:59:59.000Z

327

TUNGSTEN ISOTOPIC COMPOSITIONS IN STARDUST SiC GRAINS FROM THE MURCHISON METEORITE: CONSTRAINTS ON THE s-PROCESS IN THE Hf-Ta-W-Re-Os REGION  

SciTech Connect

We report the first tungsten isotopic measurements in stardust silicon carbide (SiC) grains recovered from the Murchison carbonaceous chondrite. The isotopes {sup 182,183,184,186}W and {sup 179,180}Hf were measured on both an aggregate (KJB fraction) and single stardust SiC grains (LS+LU fraction) believed to have condensed in the outflows of low-mass carbon-rich asymptotic giant branch (AGB) stars with close-to-solar metallicity. The SiC aggregate shows small deviations from terrestrial (= solar) composition in the {sup 182}W/{sup 184}W and {sup 183}W/{sup 184}W ratios, with deficits in {sup 182}W and {sup 183}W with respect to {sup 184}W. The {sup 186}W/{sup 184}W ratio, however, shows no apparent deviation from the solar value. Tungsten isotopic measurements in single mainstream stardust SiC grains revealed lower than solar {sup 182}W/{sup 184}W, {sup 183}W/{sup 184}W, and {sup 186}W/{sup 184}W ratios. We have compared the SiC data with theoretical predictions of the evolution of W isotopic ratios in the envelopes of AGB stars. These ratios are affected by the slow neutron-capture process and match the SiC data regarding their {sup 182}W/{sup 184}W, {sup 183}W/{sup 184}W, and {sup 179}Hf/{sup 180}Hf isotopic compositions, although a small adjustment in the s-process production of {sup 183}W is needed in order to have a better agreement between the SiC data and model predictions. The models cannot explain the {sup 186}W/{sup 184}W ratios observed in the SiC grains, even when the current {sup 185}W neutron-capture cross section is increased by a factor of two. Further study is required to better assess how model uncertainties (e.g., the formation of the {sup 13}C neutron source, the mass-loss law, the modeling of the third dredge-up, and the efficiency of the {sup 22}Ne neutron source) may affect current s-process predictions.

Avila, Janaina N.; Ireland, Trevor R.; Holden, Peter [Research School of Earth Sciences, Australian National University, Canberra, ACT 0200 (Australia); Lugaro, Maria; Buntain, Joelene [Centre for Stellar and Planetary Astrophysics, Monash University, Clayton, VIC 3800 (Australia); Gyngard, Frank; Zinner, Ernst; Amari, Sachiko [Laboratory for Space Sciences and the Department of Physics, Washington University, One Brookings Drive, St. Louis, MO 63130 (United States); Cristallo, Sergio [Departamento de Fisica Teorica y del Cosmos, Universidad de Granada, Granada 18071 (Spain); Karakas, Amanda, E-mail: janaina.avila@anu.edu.au [Mount Stromlo Observatory, Australian National University, Weston Creek, ACT 2611 (Australia)

2012-01-01T23:59:59.000Z

328

Identification of Mn site in Pb(Zr,Ti)O{sub 3} by synchrotron x-ray absorption near-edge structure: Theory and experiment  

SciTech Connect

Synchrotron x-ray absorption near-edge structure (XANES) experiments are performed on Mn-doped PbZr{sub 1-x}Ti{sub x}O{sub 3} samples (PZT) and compared with first-principles XANES simulations. The features of the measured Mn K-edge XANES are consistent with the first-principles XANES of Mn on the Ti/Zr site and inconsistent with Mn on other sites. The clear agreement between measured and first-principles theoretical XANES spectra reported here is by far the strongest evidence of Mn substituting for Ti/Zr in PZT. This work illustrates that a first-principles supercell framework, which is popularly used to study impurities in crystals, can be used in conjunction with XANES measurement in order to identify an impurity structure with a high degree of confidence. This approach may thus be broadly applicable to study impurities in other crystals.

Limpijumnong, Sukit; Rujirawat, Saroj; Boonchun, Adisak; Smith, M. F.; Cherdhirunkorn, B. [National Synchrotron Research Center, Nakhon Ratchasima 30000, Thailand and School of Physics, Suranaree University of Technology, Nakhon Ratchasima 30000 (Thailand); National Synchrotron Research Center, Nakhon Ratchasima 30000 (Thailand); Department of Physics, Thammasat University, Patum Thani 12121 (Thailand)

2007-03-05T23:59:59.000Z

329

The Nitriding of Hafnium and Zirconium Using a Laser-sustained Plasma.  

E-Print Network (OSTI)

??A parametric study of laser and laser-sustained plasma interactions in nitrogen atmosphere with zirconium (Zr) and hafnium (Hf) metal was conducted to investigate the formation (more)

Strait, Timmy

2013-01-01T23:59:59.000Z

330

RESEARCH DESIGN TO EVALUATE Zr-2.5Nb AND Zr-2.5Nb-0.5Cu ALLOYS FOR DELAYED FAILURE HYDROGEN EMBRITTLEMENT. Final Report, October 15, 1962-October 14, 1963  

DOE Green Energy (OSTI)

In a previous program, the existence of moderate delayed failure of Zr-- 2.5Nb with 500 ppm absorbed hydrogen was established. The present investigation is to determine static fatigue susceptibility of this alloy under various conditions of hydrogen content, heat treatment, and metallurgical condition and includes study of the ternary modification Zr-- 2.5Nb -0.5Cu. Notched and unnotched specimens were evaluated under static loading conditions, primarily at room temperature and with 500 ppm absorbed hydrogen, and the time to failure and fracture characteristics were determined. The metallurgical history which resulted in significant delayed failure susceptibility consisted of water quenching followed by an aging treatment which gave a matrix of entirely transformed beta. If an alphatransformed beta microstructure was produced, static fatigue was markedly attenuated. The results can be accounted for by consideration of whether a crack nucleus cand propagate through the matrix or be stopped by local plastic yielding. The propagation of cracks is therefore determined by matrix strength and ductility, which appear to be strong factors in determining hydrogen embrittlement. (auth)

Weinstein, D.; Holtz, F.C.

1963-11-14T23:59:59.000Z

331

Reduction of native oxides on InAs by atomic layer deposited Al{sub 2}O{sub 3} and HfO{sub 2}  

SciTech Connect

Thin high-{kappa} oxide films on InAs, formed by atomic layer deposition, are the key to achieve high-speed metal-oxide-semiconductor devices. We have studied the native oxide and the interface between InAs and 2 nm thick Al{sub 2}O{sub 3} or HfO{sub 2} layers using synchrotron x-ray photoemission spectroscopy. Both films lead to a strong oxide reduction, obtaining less than 10% of the native As-oxides and between 10% and 50% of the native In-oxides, depending on the deposition temperature. The ratio of native In- to As-oxides is determined to be 2:1. The exact composition and the influence of different oxidation states and suboxides is discussed in detail.

Timm, R.; Fian, A.; Hjort, M.; Thelander, C.; Lind, E.; Andersen, J. N.; Wernersson, L.-E.; Mikkelsen, A. [Department of Physics, Nanometer Structure Consortium, Lund University, P.O. Box 118, 22 100 Lund (Sweden)

2010-09-27T23:59:59.000Z

332

North Carolina State Energy Office Š Energy Efficiency and Conservation Block Grant Program Funds Provided by the American Recovery and Reinvestment Act of 2009, OAS-RA-13-09  

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

North Carolina State Energy Office  North Carolina State Energy Office  Energy Efficiency and Conservation Block Grant Program Funds Provided by the American Recovery and Reinvestment Act of 2009 OAS-RA-13-09 February 2013 Department of Energy Washington, DC 20585 February 19, 2013 MEMORANDUM FOR THE ASSISTANT SECRETARY FOR ENERGY EFFICIENCY AND RENEWABLE ENERGY FROM: Rickey R. Hass Deputy Inspector General for Audits and Inspections Office of Inspector General SUBJECT: INFORMATION: Examination Report on "North Carolina State Energy Office - Energy Efficiency and Conservation Block Grant Program Funds Provided by the American Recovery and Reinvestment Act of 2009" INTRODUCTION AND OBJECTIVE

333

Community Action Partnership of the Greater Dayton Area … Weatherization Assistance Program Funds Provided by the American Recovery and Reinvestment Act of 2009, OAS-RA-11-18  

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

Community Action Partnership of the Community Action Partnership of the Greater Dayton Area - Weatherization Assistance Program Funds Provided by the American Recovery and Reinvestment Act of 2009 OAS-RA-11-18 September 2011 Department of Energy Washington, DC 20585 September 29, 2011 MEMORANDUM FOR THE ACTING ASSISTANT SECRETARY FOR ENERGY EFFICIENCY AND RENEWABLE ENERGY FROM: Rickey R. Hass Deputy Inspector General for Audits and Inspections Office of Inspector General SUBJECT: INFORMATION: Examination Report on "Community Action Partnership of the Greater Dayton Area - Weatherization Assistance Funds Provided by the American Recovery and Reinvestment Act of 2009" BACKGROUND The attached report presents the results of an examination of the Community Action Partnership

334

Examination Report on "The Department of Energy's American Recovery and Reinvestment Act of 2009 Energy Efficiency and Conservation Block Grant Program - Efficiency Maine Trust", OAS-RA-13-04  

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

The Department of Energy's The Department of Energy's American Recovery and Reinvestment Act Energy Efficiency and Conservation Block Grant Program - Efficiency Maine Trust OAS-RA-13-04 November 2012 Department of Energy Washington, DC 20585 November 8, 2012 MEMORANDUM FOR THE ASSISTANT SECRETARY FOR ENERGY EFFICIENCY AND RENEWABLE ENERGY FROM: Rickey R. Hass Deputy Inspector General for Audits and Inspections Office of Inspector General SUBJECT: INFORMATION: Examination Report on "The Department of Energy's American Recovery and Reinvestment Act of 2009 Energy Efficiency and Conservation Block Grant Program - Efficiency Maine Trust" INTRODUCTION AND OBJECTIVE The attached report presents the results of an examination of the Efficiency Maine Trust's (Trust)

335

Connecticut Department of Energy and Environmental Protection  Energy Efficiency and Conservation Block Grant Program Funds Provided by the American Recovery and Reinvestment Act of 2009, OAS-RA-13-14  

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

Connecticut Department of Energy Connecticut Department of Energy and Environmental Protection  Energy Efficiency and Conservation Block Grant Program Funds Provided by the American Recovery and Reinvestment Act of 2009 OAS-RA-13-14 February 2013 Department of Energy Washington, DC 20585 February 28, 2013 MEMORANDUM FOR THE ASSISTANT SECRETARY FOR ENERGY EFFICIENCY AND RENEWABLE ENERGY FROM: Rickey R. Hass Deputy Inspector General for Audits and Inspections Office of Inspector General SUBJECT: INFORMATION: Examination Report on "Connecticut Department of Energy and Environmental Protection - Energy Efficiency and Conservation Block Grant Program Funds Provided by the American Recovery and Reinvestment Act of 2009" INTRODUCTION AND OBJECTIVE

336

South Carolina Energy Office … Energy Efficiency and Conservation Block Grant Program Funds Provided by the American Recovery and Reinvestment Act of 2009, OAS-RA-13-21  

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

South Carolina Energy Office - South Carolina Energy Office - Energy Efficiency and Conservation Block Grant Program Funds Provided by the American Recovery and Reinvestment Act of 2009 OAS-RA-13-21 May 2013 Department of Energy Washington, DC 20585 May 14, 2013 MEMORANDUM FOR THE PROGRAM MANAGER, WEATHERIZATION AND INTERGOVERNMENTAL PROGRAM, OFFICE OF ENERGY EFFICIENCY AND RENEWABLE ENERGY FROM: Jack Rouch, Director Central Audits Division Office of Inspector General SUBJECT: INFORMATION: Examination Report on "South Carolina Energy Office - Energy Efficiency and Conservation Block Grant Program Funds Provided by the American Recovery and Reinvestment Act of 2009" BACKGROUND The attached report presents the results of an examination of the South Carolina Energy Office's

337

Corrosion of U sub x Zr sub 1-x C sub 1-y nuclear fuel materials in hydrogen gas at high pressures and temperatures  

DOE Green Energy (OSTI)

This paper describes the thermodynamics and kinetics of the corrosion of U{sub x}Zr{sub 1-x}C{sub 1-y} in hydrogen gas. It describes how corrosion rates are influenced by variables such as pressure, temperature, and gas flow rate. A model is developed which agrees with experimental steady state corrosion rates at 1 atm between 2670 and 3100 K. Under these conditions the corrosion flux is rate limited by the vapor phase transport of Zr(g) away from the solid surface to the bulk gas stream where the partial pressure of Zr(g) is determined by the congruently vaporizing surface composition. Extrapolation of the model to higher pressures indicates that Zr(g) transport should also be rate limiting at higher pressures but the corrosion rate should decrease with increased total pressure due to reduced gaseous diffusion rates. The model predicts that the corrosion rate will increase as the square root of gas velocity for a given temperature and pressure. Calculations demonstrating the effects of gas velocity are in agreement with experimental studies. The addition of hydrocarbons to the hydrogen gas stream is predicted to decrease the corrosion rates significantly.

Butt, D.P.

1992-01-01T23:59:59.000Z

338

Corrosion of U{sub x}Zr{sub 1-x}C{sub 1-y} nuclear fuel materials in hydrogen gas at high pressures and temperatures  

DOE Green Energy (OSTI)

This paper describes the thermodynamics and kinetics of the corrosion of U{sub x}Zr{sub 1-x}C{sub 1-y} in hydrogen gas. It describes how corrosion rates are influenced by variables such as pressure, temperature, and gas flow rate. A model is developed which agrees with experimental steady state corrosion rates at 1 atm between 2670 and 3100 K. Under these conditions the corrosion flux is rate limited by the vapor phase transport of Zr(g) away from the solid surface to the bulk gas stream where the partial pressure of Zr(g) is determined by the congruently vaporizing surface composition. Extrapolation of the model to higher pressures indicates that Zr(g) transport should also be rate limiting at higher pressures but the corrosion rate should decrease with increased total pressure due to reduced gaseous diffusion rates. The model predicts that the corrosion rate will increase as the square root of gas velocity for a given temperature and pressure. Calculations demonstrating the effects of gas velocity are in agreement with experimental studies. The addition of hydrocarbons to the hydrogen gas stream is predicted to decrease the corrosion rates significantly.

Butt, D.P.

1992-06-01T23:59:59.000Z

339

A thermokinetic model describing the vaporization behavior of U[sub x]Zr[sub 1-x]C[sub 1-y] in hydrogen  

DOE Green Energy (OSTI)

This paper describes the thermodynamics and kinetics of the corrosion of U[sub x]Zr[sub 1-x]C[sub 1-y] in hydrogen gas. It describes how corrosion rates are influenced by variables such as pressure, temperature, and gas flow rate. A model is developed which agrees with experimental steady-state corrosion rates at 1 atm between 2670 and 3100 K. It is shown that under steady-state conditions the corrosion flux is rate limited by the vapor phase transport of Zr(g) away from the solid surface to the bulk gas stream where the partial pressure of Zr(g) is determined by the congruently vaporizing surface composition. Extrapolation of the model to higher pressures indicates that Zr(g) transport should also be rate limiting at higher pressures but the corrosion rate should decrease slightly with increased hydrogen pressure due to reduced gaseous diffusion rates. The model predicts that the corrosion rate will increase as the square root of gas velocity for a given temperature and pressure. Calculations demonstrating the effects of gas velocity are in agreement with experimental studies.

Butt, D.P.

1993-01-01T23:59:59.000Z

340

A thermokinetic model describing the vaporization behavior of U{sub x}Zr{sub 1-x}C{sub 1-y} in hydrogen  

DOE Green Energy (OSTI)

This paper describes the thermodynamics and kinetics of the corrosion of U{sub x}Zr{sub 1-x}C{sub 1-y} in hydrogen gas. It describes how corrosion rates are influenced by variables such as pressure, temperature, and gas flow rate. A model is developed which agrees with experimental steady-state corrosion rates at 1 atm between 2670 and 3100 K. It is shown that under steady-state conditions the corrosion flux is rate limited by the vapor phase transport of Zr(g) away from the solid surface to the bulk gas stream where the partial pressure of Zr(g) is determined by the congruently vaporizing surface composition. Extrapolation of the model to higher pressures indicates that Zr(g) transport should also be rate limiting at higher pressures but the corrosion rate should decrease slightly with increased hydrogen pressure due to reduced gaseous diffusion rates. The model predicts that the corrosion rate will increase as the square root of gas velocity for a given temperature and pressure. Calculations demonstrating the effects of gas velocity are in agreement with experimental studies.

Butt, D.P

1993-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "ra zr hf" from the National Library of EnergyBeta (NLEBeta).
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to obtain the most current and comprehensive results.


341

A Novel Combustion Synthesis Preparation of CuO/ZnO/ZrO2/Pd for Oxidative Hydrogen Production from Methanol  

E-Print Network (OSTI)

A Novel Combustion Synthesis Preparation of CuO/ZnO/ZrO2/Pd for Oxidative Hydrogen Production from pre- pared via three combustion synthesis routes including volume combustion, impregnated substrate combustion, and so-called second wave impregnation combustion methods. These catalysts were characterized via

Mukasyan, Alexander

342

Growth and Properties of (001)-oriented Pb(Zr?.??Ti?.??)O?/LaNiO? Films on Si(001) Substrates with TiN Buffer Layers  

E-Print Network (OSTI)

Pulsed laser deposition has been used to grow Pb(Zr?.??Ti?.??)O? (PZT)/LaNiO? (LNO) heterostructures with restricted crystallographic orientations on bare Si(001) and SiO?-coated Si(001) substrates, using TiN buffer layers. ...

Zhu, Tie-Jun

343

Preparation and Characterization of Au-ZrO2-SiO2 Nanocomposite Spheres and Their Application in Enrichment and Detection of Organophosphorus Agents  

SciTech Connect

Au-ZrO{sub 2}-SiO{sub 2} nanocomposite spheres were synthesized and used as selective sorbents for the solid-phase extraction (SPE) of orananophosphorous agents. A non-enzymatic electrochemical sensor based on an Au-ZrO{sub 2}-SiO{sub 2} modified electrode was developed for selective detection of orananophosphorous pesticides (OPs). The Au-ZrO{sub 2}-SiO{sub 2} nanocomposite spheres were synthesized by hydrolysis and condensation of zirconia n-butoxide (TBOZ) on the surface of SiO{sub 2} spheres and then introduction of gold nanoparticles on the surface. Transmission electron microscope and X-ray photoelectron spectroscopy were performed to characterize the formation of the nanocomposite sphere. Fast extraction of OP was achieved by Au-ZrO{sub 2}-SiO{sub 2} modified electrode within 5 min via the specific affinity between zirconia and phosphoric group. The assay yields a broad concentration range of paraoxon-ethyl from 1.0 to 500 ng/mL{sup -1} with a detection limit 0.5 ng/mL{sup -1}. This selective and sensitive method holds great promise for the enrichment and detection of OPs.

Yang, Yuqi; Tu, Haiyang; Zhang, Aidong; Du, Dan; Lin, Yuehe

2012-03-01T23:59:59.000Z

344

Strong blue and white photoluminescence emission of BaZrO{sub 3} undoped and lanthanide doped phosphor for light emitting diodes application  

SciTech Connect

In this paper, we report the obtained strong broadband blue photoluminescence (PL) emission centered at 427 nm for undoped BaZrO{sub 3} observed after 266 nm excitation of submicron crystals prepared by hydrothermal/calcinations method. This emission is enhanced with the introduction of Tm{sup 3+} ions and is stronger than the characteristic PL blue emission of such lanthanide. The proposed mechanism of relaxation for host lattice emission is based on the presence of oxygen vacancies produced during the synthesis process and the charge compensation due to the difference in the electron valence between dopant and substituted ion in the host. Brilliant white light emission with a color coordinate of (x=0.29, y=0.32) was observed by combining the blue PL emission from the host with the green and red PL emission from Tb{sup 3+} and Eu{sup 3+} ions, respectively. The color coordinate can be tuned by changing the ratio between blue, green and red band by changing the concentration of lanthanides. - Graphical abstract: Strong blue emission from undoped BaZrO{sub 3} phosphor and white light emission by doping with Tb{sup 3+} (green) and Eu{sup 3+} (red) after 266 nm excitation. Highlights: Black-Right-Pointing-Pointer Blue emission from BaZrO{sub 3} phosphor. Black-Right-Pointing-Pointer Blue emission enhanced with Tm{sup 3+}. Black-Right-Pointing-Pointer White light from BaZrO{sup 3+} phosphor.

Romero, V.H. [Centro de Investigaciones en Optica, A. P. 1-948, Leon Gto., 37160 (Mexico)] [Centro de Investigaciones en Optica, A. P. 1-948, Leon Gto., 37160 (Mexico); De la Rosa, E., E-mail: elder@cio.mx [Centro de Investigaciones en Optica, A. P. 1-948, Leon Gto., 37160 (Mexico); Salas, P. [Centro de Fisica Aplicada y Tecnologia Avanzada, Universidad Nacional Autonoma de Mexico, A.P. 1-1010, Queretaro, Qro. 76000 (Mexico)] [Centro de Fisica Aplicada y Tecnologia Avanzada, Universidad Nacional Autonoma de Mexico, A.P. 1-1010, Queretaro, Qro. 76000 (Mexico); Velazquez-Salazar, J.J. [Department of Physics and Astronomy, The University of Texas at San Antonio One UTSA Circle, San Antonio TX 78249 (United States)] [Department of Physics and Astronomy, The University of Texas at San Antonio One UTSA Circle, San Antonio TX 78249 (United States)

2012-12-15T23:59:59.000Z

345

Ab initio molecular dynamics simulations of ionsolid interactions in Gd2Zr2O7 and Gd2Ti2O7  

Science Conference Proceedings (OSTI)

The development of the ab initio molecular dynamics (AIMD) method has made it a powerful tool in describing ionsolid interactions in materials, with the determination of threshold displacement energies with ab initio accuracy, and prediction of a new mechanism for defect generation and new defective states that are different from classical molecular dynamics (MD) simulations. In the present work, this method is employed to study the low energy recoil events in Gd2Zr2O7 and Gd2Ti2O7. The weighted average threshold displacement energies in Gd2Zr2O7 are determined to be 38.8 eV for Gd, 41.4 eV for Zr, 18.6 eV for O48f, and 15.6 eV for O8b, which are smaller than the respective values of 41.8, >53.8, 22.6 and 16.2 eV in Gd2Ti2O7. It reveals that all the ions in Gd2Zr2O7 are more easily displaced than those in Gd2Ti2O7, and anion orderdisorder is more likely to be involved in the displacement events than cation disordering. The average charge transfer from the primary knock-on atom to its neighbors is estimated to be [similar]0.15, [similar]0.11 to 0.27 and [similar]0.1 to 0.13 |e| for Gd, Zr (or Ti), and O, respectively. Neglecting the charge transfer in the interatomic potentials may result in the larger threshold displacement energies in classical MD.

Wang, X. J.; Xiao, Haiyan Y.; Zu, Xiaotao; Zhang, Yanwen; Weber, William J.

2012-12-21T23:59:59.000Z

346

Ab initio molecular dynamics simulations of ion-solid interactions in Gd2Zr2O7 and Gd2Ti2O7  

SciTech Connect

The development of ab initio molecular dynamics (AIMD) method has made it a powerful tool in describing ion-solid interactions in materials, with identification determination of threshold displacement energies with ab initio accuracy, and prediction of new mechanism for defect generation and new defective states that are different from classical molecular dynamics (MD) simulations. In the present work, this method is employed to study the low energy recoil events in Gd2Zr2O7 and Gd2Ti2O7. The weighted average threshold displacement energies in Gd2Zr2O7 are determined to be 38.8 eV for Gd, 41.4 eV for Zr, 18.6 eV for O48f, and 15.6 eV for O8b, which are smaller than the respective values of 41.8, >53.8, 22.6 and 16.2 eV in Gd2Ti2O7. It reveals that all the ions in Gd2Zr2O7 are more easily displaced than those in Gd2Ti2O7, and anion order-disorder are more likely to be involved in the displacement events than cation disordering. The average charge transfer from the primary knock-on atom to its neighbors is estimated to be ~0.15, ~0.11-0.27 and ~0.1-0.13 |e| for Gd, Zr (or Ti), and O, respectively. Negligence of the charge transfer in the interatomic potentials may result in the larger threshold displacement energies in classical MD.

Wang, X J [University of Electronic Science and Technology of China (UESTC); Xiao, Haiyan [University of Tennessee, Knoxville (UTK); Zu, X T [University of Electronic Science and Technology of China (UESTC); Zhang, Yanwen [ORNL; Weber, William J [ORNL

2013-01-01T23:59:59.000Z

347

Impact of SF{sub 6} plasma treatment on performance of TaN-HfO{sub 2}-InP metal-oxide-semiconductor field-effect transistor  

SciTech Connect

In this work, the experimental impact of SF{sub 6} plasma treatment on the performance of InP metal-oxide-semiconductor field-effect transistors is presented. S and F are incorporated into atomic layer deposited HfO{sub 2} via postgate SF{sub 6} plasma treatment. The decreased subthreshold swing, gate leakage (I{sub g}), and increased effective channel mobility ({mu}{sub eff}) indicate that better interface and bulk oxide quality have been achieved with SF{sub 6} plasma treatment due to the formation of stronger Hf-F bonds. Drive current (I{sub d}), transconductance (G{sub m}), and effective channel mobility ({mu}{sub eff}) are improved by 22.3%, 35%, and 35%, respectively, compared with those of control devices.

Wang Yanzhen; Chen Yenting; Zhao Han; Xue Fei; Zhou Fei; Lee, Jack C. [Department of Electrical and Computer Engineering, Microelectronics Research Center, University of Texas at Austin, Austin, Texas 78758 (United States)

2011-01-24T23:59:59.000Z

348

Crystal structure and antiferromagnetic ordering of quasi-2D [Cu(HF{sub 2})(pyz){sub 2}]TaF{sub 6} (pyz = pyrazine).  

SciTech Connect

The crystal structure of the title compound was determined by X-ray diffraction at 90 and 295 K. Copper(II) ions are coordinated to four bridging pyz ligands to form square layers in the ab-plane. Bridging HF{sub 2}{sup -} ligands join the layers together along the c-axis to afford a tetragonal, three-dimensional (3D) framework that contains Taf{sub 6}{sup -} anions in every cavity. At 295 K, the pyz rings lie exactly perpendicular to the layers and cooling to 90 K induces a canting of those rings. Magnetically, the compound exhibits 2D antiferromagnetic correlations within the 2D layers with an exchange interaction of -13.1(1) K. Weak interlayer interactions, as mediated by Cu-F-H-F-Cu, leads to long-range magnetic order below 4.2 K. Pulsed-field magnetization data at 0.5 K show a concave curvature with increasing B and reveal a saturation magnetization at 35.4 T.

Manson, J. L.; Schlueter, J. A.; McDonald, R. D.; Singleton, J.; Materials Science Division; Eastern Washington Univ.; LANL

2010-04-01T23:59:59.000Z

349

A first-principles density functional theory study of the electronic structural and thermodynamic properties of M2ZrO3 and M2CO3 (M=Na, K) and their capabilities for CO2 capture  

SciTech Connect

Alkali metal zirconates could be used as solid sorbents for CO{sub 2} capture. The structural, electronic, and phonon properties of Na{sub 2}ZrO{sub 3}, K{sub 2}ZrO{sub 3}, Na{sub 2}CO{sub 3}, and K{sub 2}CO{sub 3} are investigated by combining the density functional theory with lattice phonon dynamics. The thermodynamics of CO{sub 2} absorption/desorption reactions of these two zirconates are analyzed. The calculated results show that their optimized structures are in a good agreement with experimental measurements. The calculated band gaps are 4.339 eV (indirect), 3.641 eV (direct), 3.935 eV (indirect), and 3.697 eV (direct) for Na{sub 2}ZrO{sub 3}, K{sub 2}ZrO{sub 3}, Na{sub 2}CO{sub 3}, and K{sub 2}CO{sub 3}, respectively.The calculated phonon dispersions and phonon density of states for M{sub 2}ZrO{sub 3} and M{sub 2}CO{sub 3} (M = K, Na, Li) revealed that from K to Na to Li, their frequency peaks are shifted to high frequencies due to the molecular weight decreased from K to Li. From the calculated reaction heats and relationships of free energy change versus temperatures and CO{sub 2} pressures of the M{sub 2}ZrO{sub 3} (M = K, Na, Li) reacting with CO{sub 2}, we found that the performance of Na{sub 2}ZrO{sub 3} capturing CO{sub 2} is similar to that of Li{sub 2}ZrO{sub 3} and is better than that of K{sub 2}ZrO{sub 3}. Therefore, Na{sub 2}ZrO{sub 3} and Li{sub 2}ZrO{sub 3} are good candidates of high temperature CO{sub 2} sorbents and could be used for post combustion CO{sub 2} capture technologies.

Yuhua Duan

2012-01-01T23:59:59.000Z

350

Effective passivation of In{sub 0.2}Ga{sub 0.8}As by HfO{sub 2} surpassing Al{sub 2}O{sub 3} via in-situ atomic layer deposition  

SciTech Connect

High {kappa} gate dielectrics of HfO{sub 2} and Al{sub 2}O{sub 3} were deposited on molecular beam epitaxy-grown In{sub 0.2}Ga{sub 0.8}As pristine surface using in-situ atomic-layer-deposition (ALD) without any surface treatment or passivation layer. The ALD-HfO{sub 2}/p-In{sub 0.2}Ga{sub 0.8}As interface showed notable reduction in the interfacial density of states (D{sub it}), deduced from quasi-static capacitance-voltage and conductance-voltage (G-V) at room temperature and 100 Degree-Sign C. More significantly, the midgap peak commonly observed in the D{sub it}(E) of ALD-oxides/In{sub 0.2}Ga{sub 0.8}As is now greatly diminished. The midgap D{sub it} value decreases from {>=}15 Multiplication-Sign 10{sup 12} eV{sup -1} cm{sup -2} for ALD-Al{sub 2}O{sub 3} to {approx}2-4 Multiplication-Sign 10{sup 12} eV{sup -1} cm{sup -2} for ALD-HfO{sub 2}. Further, thermal stability at 850 Degree-Sign C was achieved in the HfO{sub 2}/In{sub 0.2}Ga{sub 0.8}As, whereas C-V characteristics of Al{sub 2}O{sub 3}/p-In{sub 0.2}Ga{sub 0.8}As degraded after the high temperature annealing. From in-situ x-ray photoelectron spectra, the AsO{sub x}, which is not the oxidized state from the native oxide, but is an induced state from adsorption of trimethylaluminum and H{sub 2}O, was found at the ALD-Al{sub 2}O{sub 3}/In{sub 0.2}Ga{sub 0.8}As interface, while that was not detected at the ALD-HfO{sub 2}/In{sub 0.2}Ga{sub 0.8}As interface.

Chang, Y. H.; Chiang, T. H. [Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan (China); Lin, C. A.; Liu, Y. T.; Lin, H. Y.; Huang, M. L.; Kwo, J. [Department of Physics, National Tsing Hua University, Hsinchu 30013, Taiwan (China); Lin, T. D.; Hong, M. [Graduate Institute of Applied Physics and Department of Physics, National Taiwan University, Taipei 10617, Taiwan (China); Pi, T. W. [National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan (China)

2012-10-22T23:59:59.000Z

351

Specification of CuCrZr Alloy Properties after Various Thermo-Mechanical Treatments and Design Allowables including Neutron Irradiation Effects  

Science Conference Proceedings (OSTI)

Precipitation hardened CuCrZr alloy is a promising heat sink and functional material for various applica- tions in ITER, for example the first wall, blanket electrical attachment, divertor, and heating systems. Three types of thermo-mechanical treatment were identified as most promising for the various applica- tions in ITER: solution annealing, cold working and ageing; solution annealing and ageing; solution annealing and ageing at non-optimal condition due to specific manufacturing processes for engineer- ing-scale components. The available data for these three types of treatments were assessed and mini- mum tensile properties were determined based on recommendation of Structural Design Criteria for the ITER In-vessel Components. The available data for these heat treatments were analyzed for assess- ment of neutron irradiation effect. Using the definitions of the ITER Structural Design Criteria the design allowable stress intensity values are proposed for CuCrZr alloy after various heat treatments.

Barabash, Vladimir [ITER Organization, Saint Paul Lez Durance, France; Kalinin, G. M. [RDIPE, P.O. Box 788, 101000 Moscow, Russia; Fabritsiev, Sergei A. [D.V. Efremov Scientific Research Institute, St. Petersburg, Russia; Zinkle, Steven J [ORNL

2012-01-01T23:59:59.000Z

352

Selective Production of H2 from Ethanol at Low Temperatures over Rh/ZrO2-CeO2 Catalysts  

Science Conference Proceedings (OSTI)

A series of Rh catalysts on various supports have been applied to H2 production from the bio-ethanol steam reforming reaction. Support plays a very important role on product selectivity at low temperatures (below 450C). Acidic or basic supports favor ethanol dehydration, while ethanol dehydrogenation is favored over neutral supports at low temperatures. Among the catalysts evaluated in this study, the Rh/Ce-ZrO2 catalyst exhibited the highest H2 yield at 450 C, which is possibly due to the high oxygen storage capacity of Ce-ZrO2 resulting in efficient transfer of mobile oxygen species from the H2O molecule to the reaction intermediate.

Roh, Hyun-Seog; Wang, Yong; King, David L.

2008-07-01T23:59:59.000Z

353

Controllable synthesis of Ce{sub 1-x}Zr{sub x}O{sub 2} hollow nanospheres via supercritical anti-solvent precipitation  

Science Conference Proceedings (OSTI)

Nanocrystalline Ce{sub 1-x}Zr{sub x}O{sub 2} hollow nanospheres were successfully synthesized via supercritical anti-solvent precipitation using supercritical CO{sub 2} as the anti-solvent. It was found that the as-produced samples exhibited hollow spherical structures with uniform diameters ranging from 30 to 50 nm and the sphere walls were composed of various oriented nanocrystallites, with sizes of 3-7 nm. The results of high-resolution transmission electron microscopy showed that the formation of the hollow structures could be controlled by adjusting the solution concentration. The results of temperature-programmed reduction and oxygen storage capacity measurements showed that the hollow nanospheres had enhanced redox properties. A possible mechanism for the formation of Ce{sub 1-x}Zr{sub x}O{sub 2} hollow nanospheres has also been proposed and experimental investigated.

Jiang Haoxi [Key Laboratory for Green Chemical Technology of Ministry of Education, R and D Center for Petrochemical Technology, Tianjin University, Tianjin 300072 (China); Post-Doctor Station for Science and Technology of Chemical Engineering and Technology, Tianjin University, Tianjin 300072 (China); Post-Doctor Workstation for Science and Technology, Shandong Haihua Group Co. Ltd, Weifang, Shandong 262737 (China); Huang Pan; Liu Lin [Key Laboratory for Green Chemical Technology of Ministry of Education, R and D Center for Petrochemical Technology, Tianjin University, Tianjin 300072 (China); Zhang Minhua, E-mail: mhzhang@tju.edu.cn [Key Laboratory for Green Chemical Technology of Ministry of Education, R and D Center for Petrochemical Technology, Tianjin University, Tianjin 300072 (China)

2012-01-15T23:59:59.000Z

354

City of Los Angeles  Energy Efficiency and Conservation Block Grant Program Funds Provided by the American Recovery and Reinvestment Act of 2009, OAS-RA-13-12  

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

City of Los Angeles - Energy City of Los Angeles - Energy Efficiency and Conservation Block Grant Program Funds Provided by the American Recovery and Reinvestment Act of 2009 OAS-RA-13-12 February 2013 Department of Energy Washington, DC 20585 February 19, 2013 MEMORANDUM FOR THE ASSISTANT SECRETARY FOR ENERGY EFFICIENCY AND RENEWABLE ENERGY FROM: Rickey R. Hass Deputy Inspector General for Audits and Inspections Office of Inspector General SUBJECT: INFORMATION: Examination Report on "City of Los Angeles  Energy Efficiency and Conservation Block Grant Program Funds Provided by the American Recovery and Reinvestment Act of 2009" INTRODUCTION AND OBJECTIVE The attached report presents the results of an examination of the City of Los Angeles' (City)

355

The Department of Energy's Energy Efficiency and Conservation Block Grant Program Funded under the American Recovery and Reinvestment Act for the City of Philadelphia, OAS-RA-12-09  

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

Energy Energy Efficiency and Conservation Block Grant Program Funded under the American Recovery and Reinvestment Act for the City of Philadelphia OAS-RA-12-09 April 2012 Department of Energy Washington, DC 20585 April 23, 2012 MEMORANDUM FOR THE ASSISTANT SECRETARY FOR ENERGY EFFICIENCY AND RENEWABLE ENERGY FROM: George W. Collard Assistant Inspector General for Audits Office of Inspector General SUBJECT: INFORMATION: Audit Report on "The Department of Energy's Energy Efficiency and Conservation Block Grant Program Funded under the American Recovery and Reinvestment Act for the City of Philadelphia" BACKGROUND Under the American Recovery and Reinvestment Act of 2009, the Department of Energy's Energy Efficiency and Conservation Block Grant Program (Program) received $3.2 billion in

356

Follow-up on the Department of Energy's Implementation of the Advanced Batteries and Hybrid Components Program Funded under the American Recovery and Reinvestment Act, OAS-RA-L-12-05  

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

Follow-up on the Department of Follow-up on the Department of Energy's Implementation of the Advanced Batteries and Hybrid Components Program Funded under the American Recovery and Reinvestment Act OAS-RA-L-12-05 July 2012 Department of Energy Washington, DC 20585 July 10, 2012 MEMORANDUM FOR THE DIRECTOR, NATIONAL ENERGY TECHNOLOGY LABORATORY FROM: Joanne Hill, Director Central Audits Division Office of Inspector General SUBJECT: INFORMATION: Audit Report on "Follow-up on the Department of Energy's Implementation of the Advanced Batteries and Hybrid Components Program Funded under the American Recovery and Reinvestment Act" BACKGROUND Under the American Recovery and Reinvestment Act of 2009, the Department of Energy's Advanced Batteries and Hybrid Components Program (Advanced Batteries Program) received

357

Thermodynamic Assessment of Hot Corrosion Mechanisms of Superalloys Hastelloy N and Haynes 242 in Eutectic Mixture of Molten Salts KF and ZrF4  

Science Conference Proceedings (OSTI)

The KF - ZrF4 system was considered for the application as a heat exchange agent in molten salt nuclear reactors (MSRs) beginning with the work carried out at ORNL in early fifties. Based on a combination of excellent properties such as thermal conductivity, viscosity in the molten state, and other thermo-physical and rheological properties, it was selected as one of possible candidates for the nuclear reactor secondary heat exchanger loop.

Michael V. Glazoff

2012-02-01T23:59:59.000Z

358

Full-length U-xPu-10Zr (x=0, 8, 19 wt%) Fast Reactor Fuel Test in FFTF  

SciTech Connect

The Integral Fast Reactor-1 (IFR-1) experiment performed in the Fast Flux Test Facility (FFTF) was the only U-Pu-10Zr (Pu-0, 8 and 19 wt%) metallic fast reactor test with commercial-length (91.4 cm active fuel column length) conducted to date. With few remaining test reactors there is little opportunity for performing another test with a long active fuel column. The assembly was irradiated to the goal burnup of 10 at.%. The beginning of life (BOL) peak cladding temperature of the hottest pin was 608?C, cooling to 522?C at end of life (EOL). Selected fuel pins were examined non destructively using neutron radiography, precision axial gamma scanning, and both laser and spiral contact cladding profilometry. Destructive exams included plenum gas pressure, volume, and gas composition determinations on a number of pins followed by optical metallography, electron probe microanalysis (EPMA), and alpha and beta gamma autoradiography on a single U-19Pu-10Zr pin. The post-irradiation examinations (PIEs) showed very few differences compared to the short-pin (34.3 cm fuel column) testing performed on fuels of similar composition in Experimental Breeder Reactor-II (EBR-II). The fuel column grew axially slightly less than observed in the short pins, but with the same pattern of decreasing growth with increasing Pu content. There was a difference in the fuel-cladding chemical interaction (FCCI) in that the maximum cladding penetration by interdiffusion with fuel/fission products did not occur at the top of the fuel column where the cladding temperature is highest, as observed in EBR-II tests. Instead, the more exaggerated fission-rate profile of the FFTF pins resulted in a peak FCCI at ~0.7 X/L axial location along the fuel column. This resulted from a lower production of rare earth fission products higher in the fuel column as well as a much smaller delta-T between fuel center and cladding, and therefore less FCCI, despite the higher cladding temperature. This behavior could actually help extend the life of a fuel pin in a long pin reactor design to a higher peak fuel burnup.

D. L. Porter; H.C. Tsai

2012-08-01T23:59:59.000Z

359

Structure-property relationships of antiferroelectric Pb(Zr, Ti)O{sub 3} based materials: Hydrostatic depoling characteristics  

SciTech Connect

A novel technique has been developed for the synthesis of homogeneous, weakly agglomerated highly filterable Pb(Zr, Ti)O{sub 3} (PZT) powders. PZT 95/5 based ceramics were fabricated from these powders to determine interrelationships among microstructure, dielectric properties and pressure induced ferroelectric (FE) to antiferroelectric (AFE) phase transitions. Initial measurements indicate that microstructure has a substantial effect on hydrostatic depoling characteristics. While smaller grain size materials and higher switching pressures, subtleties in microstructure, which may include entrapped porosity, resulted in a more diffuse depoling characteristic. In addition, greater than 90% dense materials were obtained at process temperatures as low at 900{degrees}C. were only 30% of the values of PZT 95/5 fired at 1300{degrees}C, the dielectric constants of the 900{degrees}C materials were almost a factor of two higher. Backscattered electron Kikuchi pattern analysis determined that adjacent, nonlinear, irregularly shaped domain structures observed by electron channel imaging were 109{degrees} domains.

Tuttle, B.; Voigt, J.; Moore, R. [and others

1997-09-01T23:59:59.000Z

360

Vapor deposition of thin-film Y-doped ZrO{sub 2} for electrochemical device applications  

DOE Green Energy (OSTI)

Solid oxide electrolytes based on yttria-stabilized zirconia (YSZ) are widely used in applications such as oxygen sensors, solid oxide fuel cells, oxygen pumps, electrocatalytic reactors, and electrochemically driven oxygen separation membranes. However, bulk YSZ is used in these applications. This requires high operating temperatures in order to minimize ohmic loss. One alternative of overcoming this problem is to use a thin film of the electrolyte. In the work, the authors have grown polycrystalline thin films of fully stabilized Y-ZrO{sub 2} on thick porous Al{sub 2}O{sub 3} substrates in multilayer La{sub 1{minus}x}Sr{sub x}MEO{sub 3}YSZ/La{sub 1{minus}x}Sr{sub x}MEO{sub 3} (ME = Mn, Co) configurations using a combination of single-target RF magnetron sputtering and electron beam physical vapor deposition techniques. The structure and morphology of these films have been studied using X-ray diffraction, and Scanning Electron Microscopy techniques. The ionic conductivity of the thin films has been measured using AC impedance analysis.

Chung, B.W.; Brosha, E.L.; Brown, D.R.; Garzon, F.H.

1994-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "ra zr hf" 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

Enhanced Power Stability for Proton Conducting Solid Oxides Fuel Cells. Calculated energy barriers for proton diffusion in Y-doped BaZrO3. Potential electrode materials for application in proton ceramic fuel cells.  

DOE Green Energy (OSTI)

A series of Quantum Mechanical (QM) calculations on Y-doped BaZrO{sub 3} (BYZ) periodic structures have been performed and calculated energy barriers for the intra-octahedra and inter-octahedra proton transfer have been found. The inter-octahedra proton transfer dominates in the BYZ electrolyte. Several potential cathode materials for the Y-doped BaZrO{sub 3} system were synthesized via glycine nitrate combustion method. Of the five potential cathode materials examined BaZr{sub 0.40}Pr{sub 0.40}Gd{sub 0.20}O{sub 3} and BaZr{sub 0.60}Y{sub 0.20}Co{sub 0.20}O{sub 3} appear to be the most promising for further applications in proton ceramic fuel cells (PCFCs). Potential anode electrocatalysts (metals) have been screened for reactivity with BaZr{sub 1-x}Y{sub x}O{sub 3-d}, fabrication compatibility, and chemical stability in fuel cell environment.

Boris Merinov; Sossina Haile; William A. Goddard III

2005-04-30T23:59:59.000Z

362

Microstructural characterization of a Zr-Ti-Ni-Mn-V-Cr based AB{sub 2}-type battery alloy  

SciTech Connect

Transmission Electron Microscopy (TEM), combined with X-ray Diffraction (XRD) and Scanning Electron Microscopy (SEM) was employed to investigate a proprietary and multicomponent AB{sub 2} type Nickel-Metal Hydride (Ni-MH) battery alloy. This material was prepared by High Pressure Gas Atomization (HPGA) and examined in both the as-atomized and heat treated condition. TEM examination showed a heavily faulted dendritic growth structure in as-atomized powder. Selected Area Diffraction (SAD) showed that this region consisted of both a cubic C15 structure with lattice constant a=7.03 and a hexagonal C14 structure with lattice parameter a=4.97 {angstrom}, c=8.11 {angstrom}. The Orientation Relationship (OR) between the C14 and C15 structures was determined to be (111)[1{bar 1}0]{sub C15}//(0001)[11{bar 2}0]{sub C14}. An interdendritic phase possessing the C14 structure was also seen. There was also a very fine grain region consisting of the C14 structure. Upon heat treatment, the faulted structure became more defined and appeared as intercalation layers within the grains. Spherical particles rich in Zr and Ni appeared scattered at the grain boundaries instead of the C14 interdendritic phase. The polycrystalline region also changed to a mixture of C14 and C15 structures. These results as well as phase stability of the C15 and C14 structures based on a consideration of atomic size factor and the average electron concentration are discussed.

Shi, Zhan

1999-01-01T23:59:59.000Z

363

Oxygen-diffusion limited metal combustions in Zr, Ti, and Fe foils: Time- and angle-resolved x-ray diffraction studies  

Science Conference Proceedings (OSTI)

The transient phase and chemical transformations of diffusion controlled metal combustions in bulk Zr, Ti, and Fe foils have been investigated, in situ, using novel time- and angle-resolved x-ray diffraction (TARXD). The TARXD employs monochromatic synchrotron x-rays and a fast-rotating diffracted beam chopper resolving the diffraction image temporally in time-resolution of {approx}45 {mu}s along the azimuth on a 2D pixel array detector. The metal foil strips (10-25 {mu}m in thickness) are ignited using a pulsed electrical heating with a typical heating rate of {approx}10{sup 6} K/s. The x-ray results indicate that the combustion occurs in molten metals, producing a wide range of stoichiometric solid oxides. It reflects an enhanced oxygen solubility and mobility of molten metals with respect to those of solid metals. However, the initial oxides formed are mainly oxygen-deficient metal oxides of ZrO, TiO, and FeO/Fe{sub 3}O{sub 4} - the lowest suboxides stable at these high temperatures. These transition metal monoxides further react with unreacted molten metals, yielding the secondary products of Zr{sub 3}O, Ti{sub 3}O, and Ti{sub 2}O - but not in FeO/Fe{sub 3}O{sub 4}. On the other hand, the higher stoichiometric oxides of ZrO{sub 2} and TiO{sub 2} are formed in the later time only on the metal surface. These results clearly indicate that the combustion process of metal strips is diffusion limited and strongly depends on the solubility and diffusivity of oxygen into molten metals. The time-resolved diffraction data reveals no evidence for metal oxidation in solids, but a series of temperature-induced polymorphic phase transitions. The dynamic thermal expansibility of Fe measured in the present fast heating experiments is similar to those in static conditions (3.3*10{sup -5}/K vs 3.5*10{sup -5}/K for {alpha}-Fe and 6.5*10{sup -5}/K versus 7.0*10{sup -5}/K for {gamma}-Fe).

Wei, Haoyan; Yoo, Choong-Shik; Chen, Jing-Yin; Shen, Guoyin (CIW); (WSU)

2012-04-30T23:59:59.000Z

364

E2 strengths and transition radii difference of one-phonon 2+ states of 92Zr from electron scattering at low momentum transfer  

E-Print Network (OSTI)

Background: Mixed-symmetry 2+ states in vibrational nuclei are characterized by a sign change between dominant proton and neutron valence-shell components with respect to the fully symmetric 2+ state. The sign can be measured by a decomposition of proton and neutron transition radii with a combination of inelastic electron and hadron scattering [C. Walz et al., Phys. Rev. Lett. 106, 062501 (2011)]. For the case of 92Zr, a difference could be experimentally established for the neutron components, while about equal proton transition radii were indicated by the data. Method: Differential cross sections for the excitation of one-phonon 2+ and 3- states in 92Zr have been measured with the (e,e') reaction at the S-DALINAC in a momentum transfer range q = 0.3-0.6 fm^(-1). Results: Transition strengths B(E2;2+_1 -> 0+_1) = 6.18(23), B(E2; 2+_2 -> 0+_1) = 3.31(10) and B(E3; 3-_1 -> 0+_1) = 18.4(11) Weisskopf units are determined from a comparison of the experimental cross sections to quasiparticle-phonon model (QPM) c...

Obeid, A Scheikh; Chernykh, M; Krugmann, A; von Neumann-Cosel, P; Pietralla, N; Poltoratska, I; Ponomarev, V Yu; Walz, C

2012-01-01T23:59:59.000Z

365

Molten Salt Mixture Properties (KF-ZrF4 and KCl-MgCl2) for Use in RELAP5-3D for High Temperature Reactor Application  

SciTech Connect

Molten salt coolants are being investigated as primary coolants for a fluoride high-temperature reactor and as secondary coolants for high temperature reactors such as the next generation nuclear plant. This work provides a review of the thermophysical properties of candidate molten salt coolants for use as a secondary heat transfer medium from a high temperature reactor to a processing plant. The molten salts LiF-NaF-KF, KF-ZrF4 and KCl-MgCl2 were considered for use in the secondary coolant loop. The thermophysical properties necessary to add the molten salts KF-ZrF4 and KCl-MgCl2 to RELAP5-3D were gathered for potential modeling purposes. The properties of the molten salt LiF-NaF-KF were already available in RELAP5-3D. The effect that the uncertainty in individual properties had on the Nusselt number was evaluated. This uncertainty in the Nusselt number was shown to be nearly independent of the molten salt temperature.

N. A. Anderson; P. Sabharwall

2012-06-01T23:59:59.000Z

366

Thin La{sub 2}Zr{sub 2}O{sub 7} films made from a water-based solution  

Science Conference Proceedings (OSTI)

Thin films of La{sub 2}Zr{sub 2}O{sub 7} (LZO) are highly regarded as possible buffer layers in the coated conductor configuration. This report describes a new synthesis for thin crystalline LZO films, based on a largely water-based solution, mainly containing metal acetates, acetic acid and an organic amine-base: triethanolamine. Initially, a thin layer of amorphous material is deposited on the textured Ni-5 at%W substrate by means of dip-coating. Only by careful control of the thermal treatment can the layer be transformed into a crystalline layer. Important parameters in this respect are the heating rate and the dwell time. The amorphous gel is analysed by HR-TGA/DTA and HR-TEM. The textured layers are analysed by XRD, pole figures, RHEED, AFM and SEM. - Grapical Abstract: Thin films of La2Zr2O7 (LZO) are produced via a water-based solution, containing metal acetates, acetic acid and triethanolamine. The thin layer is deposited on the textured Ni-5 at%W substrate by dip-coating. The amorphous gel is analysed by HR-TGA/DTA and HR-TEM. The textured layers are analysed by XRD, pole figures, RHEED analysis, AFM and SEM.

Cloet, V. [Ghent University, Krijgslaan 281-S3, 9000 Gent (Belgium)], E-mail: veerle.cloet@ugent.be; Feys, J. [Ghent University, Krijgslaan 281-S3, 9000 Gent (Belgium); Huehne, R. [Institute for Metallic Materials, IFW Dresden, Helmholtzstrasse 20, 01069 Dresden (Germany); Hoste, S.; Van Driessche, I. [Ghent University, Krijgslaan 281-S3, 9000 Gent (Belgium)

2009-01-15T23:59:59.000Z

367

Rainfall Manipulation Plot Study (RaMPS)  

DOE Data Explorer (OSTI)

Data sets are available as ASCII files, in Excel spreadsheets, and in SAS format. (Taken from http://www.konza.ksu.edu/ramps/backgrnd.html

Blair, John [Kansas State University; Fay, Phillip [USDA-ARS; Knapp, Alan [Colorado State University; Collins, Scott [University of New Mexico; Smith, Melinda [Yale University

368

NIST: Secondary Standards for Ra223  

Science Conference Proceedings (OSTI)

... the extent to which source radiation is attenuated ... Given the relatively low energy x-rays and ... clinically relevant source geometries (dose vials and ...

2012-06-27T23:59:59.000Z

369

Microsoft Word - RA6120_2.doc  

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

FINANCIAL REPORTING 1. PURPOSE. To establish financial reporting policies, procedures, and methodology for all Department of Energy (DOE) power marketing administrations...

370

Oak Ridge Reservation Volume 3. Records relating to RaLa, iodine-131, and cesium-137 at the Oak Ridge National Laboratory and the Oak Ridge Operations Office: A guide to record series of the Department of Energy and its contractors  

SciTech Connect

The purpose of this guide is to describe each of the documents and record series pertaining to the production, release, and disposal of radioactive barium-lanthanum (RaLa), iodine-131, and cesium-137 at the Department of Energy`s (DOE) Oak Ridge National Laboratory (ORNL) in Oak Ridge, Tennessee. History Associates Incorporated (HAI) prepared this guide as part of DOE`s Epidemiologic Records Inventory Project, which seeks to verify and conduct inventories of epidemiologic and health-related records at various DOE and DOE contractor sites. This introduction briefly describes the Epidemiologic Records Inventory Project and HAI`s role. It provides information on the history of the DOE-Oak Ridge Reservation (ORR), particularly ORNL. Specific attention is given to the production of RaLa and the fission products iodine-131 and cesium-137. This introduction also describes the methodologies HAI used in the selection and inventorying of documents and record series pertaining to RaLa, iodine-131, and cesium-137, and in the production of this guide. Concluding paragraphs describe the arrangement of the record series, explain the information contained in the record series descriptions, and indicate restrictions on access to the records.

NONE

1995-03-21T23:59:59.000Z

371

Conversion of CH4/CO2 to syngas over Ni-Co/Al2O3-ZrO2 nanocatalyst synthesized via plasma assisted co-impregnation method: Surface properties and catalytic performance  

Science Conference Proceedings (OSTI)

Ni/Al2O3 catalyst promoted by Co and ZrO2 was prepared by co-impregnation method and treated with glow discharge plasma. The catalytic activity of the synthesized nanocatalysts has been tested toward conversion of CH4/CO2 to syngas. The physicochemical characterizations like XRD EDX

Nader Rahemi; Mohammad Haghighi; Ali Akbar Babaluo; Mahdi Fallah Jafari

2013-01-01T23:59:59.000Z

372

Synchrotron Radiation Photoemission Spectroscopic Study of Band Offsets and Interface Self-cleaning by Atomic Layer Deposited HfO2 on In0.53Ga0.47As and In0.52Al0.48As  

SciTech Connect

The Synchrotron Radiation Photoemission Spectroscopic (SRPES) study was conducted to (a) investigate the surface chemistry of In{sub 0.53}Ga{sub 0.47}As and In{sub 0.52}Al{sub 0.48}As post chemical and thermal treatments, (b) construct band diagram and (c) investigate the interface property of HfO{sub 2}/In{sub 0.53}Ga{sub 0.47}As and HfO{sub 2}/In{sub 0.52}Al{sub 0.48}As. Dilute HCl and HF etch remove native oxides on In{sub 0.53}Ga{sub 0.47}As and In{sub 0.52}Al{sub 0.47}As, whereas in-situ vacuum annealing removes surface arsenic pile-up. After the atomic layer deposition of HfO{sub 2}, native oxides were considerably reduced compared to that in as-received epi-layers, strongly suggesting the self-clean mechanism. Valence and conduction band offsets are measured to be 3.37 {+-} 0.1eV, 1.80 {+-} 0.3eV for In{sub 0.53}Ga{sub 0.47}As and 3.00 {+-} 0.1eV, 1.47 {+-} 0.3eV for In{sub 0.52}Al{sub 0.47}As, respectively.

Kobayashi, Masaharu; /SLAC, SSRL; Chen, P.T.; Sun, Y.; Goel, N.; Majhi, P.; Garner, M; Tsai, W.; Pianetta, P.; Nishi, Y.; /SLAC, SSRL

2008-10-31T23:59:59.000Z

373

E2 strengths and transition radii difference of one-phonon 2+ states of 92Zr from electron scattering at low momentum transfer  

E-Print Network (OSTI)

Background: Mixed-symmetry 2+ states in vibrational nuclei are characterized by a sign change between dominant proton and neutron valence-shell components with respect to the fully symmetric 2+ state. The sign can be measured by a decomposition of proton and neutron transition radii with a combination of inelastic electron and hadron scattering [C. Walz et al., Phys. Rev. Lett. 106, 062501 (2011)]. For the case of 92Zr, a difference could be experimentally established for the neutron components, while about equal proton transition radii were indicated by the data. Method: Differential cross sections for the excitation of one-phonon 2+ and 3- states in 92Zr have been measured with the (e,e') reaction at the S-DALINAC in a momentum transfer range q = 0.3-0.6 fm^(-1). Results: Transition strengths B(E2;2+_1 -> 0+_1) = 6.18(23), B(E2; 2+_2 -> 0+_1) = 3.31(10) and B(E3; 3-_1 -> 0+_1) = 18.4(11) Weisskopf units are determined from a comparison of the experimental cross sections to quasiparticle-phonon model (QPM) calculations. It is shown that a model-independent plane wave Born approximation (PWBA) analysis can fix the ratio of B(E2) transition strengths to the 2+_(1,2) states with a precision of about 1%. The method furthermore allows to extract their proton transition radii difference. With the present data -0.12(51) fm is obtained. Conclusions: Electron scattering at low momentum transfers can provide information on transition radii differences of one-phonon 2+ states even in heavy nuclei. Proton transition radii for the 2+_(1,2) states in 92Zr are found to be identical within uncertainties. The g.s. transition probability for the mixed-symmetry state can be determined with high precision limited only by the available experimental information on the B(E2; 2+_1 -> 0+_1) value.

A. Scheikh Obeid; O. Burda; M. Chernykh; A. Krugmann; P. von Neumann-Cosel; N. Pietralla; I. Poltoratska; V. Yu. Ponomarev; C. Walz

2012-11-27T23:59:59.000Z

374

Robocast Pb(Zr{sub 0.95}Ti{sub 0.05})O{sub 3} Ceramic Monoliths and Composites  

Science Conference Proceedings (OSTI)

Robocasting, a computer controlled slurry deposition technique, was used to fabricate ceramic monoliths and composites of chemically prepared Pb(Zr{sub 0.95}Ti{sub 0.05})O{sub 3} (PZT 95/5) ceramics. Densities and electrical properties of the robocast samples were equivalent to those obtained for cold isostatically pressed (CIP) parts formed at 200 MPa. Robocast composites consisting of alternate layers of the following sintered densities: (93.9%--96.1%--93.9%), were fabricated using different levels of organic pore former additions. Modification from a single to a multiple material deposition robocaster was essential to the fabrication of composites that could withstand repeated cycles of saturated polarization switching under 30 kV/cm fields. Further, these composites withstood 500 MPa hydrostatic pressure induced poled ferroelectric (FE) to antiferroelectric (AFE) phase transformation during which strain differences on the order of 0.8% occurred between composite elements.

TUTTLE,BRUCE A.; SMAY,JAMES E.; CESARANO III,JOSEPH; VOIGT,JAMES A.; SCOFIELD,TIMOTHY W.; OLSON,WALTER R.; LEWIS,J.A.

2000-07-18T23:59:59.000Z

375

Process for production of solution-derived (Pb,La)(Nb,Sn,Zr,Ti)O.sub.3 thin films and powders  

DOE Patents (OSTI)

A simple and rapid process for synthesizing (Pb,La)(Nb,Sn,Zr,Ti)O.sub.3 precursor solutions and subsequent ferroelectric thin films and powders of the perovskite phase of these materials has been developed. This process offers advantages over standard methods, including: rapid solution synthesis (<10 minutes), use of commercially available materials, film production under ambient conditions, ease of lanthanum dissolution at high concentrations, and no heating requirements during solution synthesis. For lanthanum-doped ferroelectric materials, the lanthanum source can be added with total synthesis time less than 10 minutes. Films and powders are crystallized at approximately 650.degree. C. and exhibit ferroelectric properties comparable to films and powders produced by other techniques which require higher crystallization temperatures.

Boyle, Timothy J. (Albuquerque, NM)

1999-01-01T23:59:59.000Z

376

Process for production of solution-derived (Pb,La)(Nb,Sn,Zr,Ti)O{sub 3} thin films and powders  

DOE Patents (OSTI)

A simple and rapid process for synthesizing (Pb,La)(Nb,Sn,Zr,Ti)O{sub 3} precursor solutions and subsequent ferroelectric thin films and powders of the perovskite phase of these materials has been developed. This process offers advantages over standard methods, including: rapid solution synthesis (<10 minutes), use of commercially available materials, film production under ambient conditions, ease of lanthanum dissolution at high concentrations, and no heating requirements during solution synthesis. For lanthanum-doped ferroelectric materials, the lanthanum source can be added with total synthesis time less than 10 minutes. Films and powders are crystallized at approximately 650 C and exhibit ferroelectric properties comparable to films and powders produced by other techniques which require higher crystallization temperatures. 2 figs.

Boyle, T.J.

1999-01-12T23:59:59.000Z

377

Evidence of Eu{sup 2+} 4f electrons in the valence band spectra of EuTiO{sub 3} and EuZrO{sub 3}  

SciTech Connect

We report on optical band gap and valence electronic structure of two Eu{sup 2+}-based perovskites, EuTiO{sub 3} and EuZrO{sub 3} as revealed by diffuse optical scattering, electron energy loss spectroscopy, and valence-band x-ray photoelectron spectroscopy. The data show good agreement with the first-principles studies in which the top of the valence band structure is formed by the narrow Eu 4f{sup 7} electron band. The O 2p band shows the features similar to those of the Ba(Sr)TiO{sub 3} perovskites except that it is shifted to higher binding energies. Appearance of the Eu{sup 2+} 4f{sup 7} band is a reason for narrowing of the optical band gap in the title compounds as compared to their Sr-based analogues.

Kolodiazhnyi, T. [National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044 (Japan); Valant, M. [Materials Research Laboratory, University of Nova Gorica, Vipavska 13, 5000 Nova Gorica (Slovenia); Williams, J. R. [International Center for Young Scientists (ICYS), MANA, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044 (Japan); Bugnet, M.; Botton, G. A. [Department of Materials Science and Engineering, McMaster University, Hamilton, Ontario L8S 4L7 (Canada); Ohashi, N. [International Center for Materials Nanoarchitectonics, MANA, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044 (Japan); Sakka, Y. [National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047 (Japan)

2012-10-15T23:59:59.000Z

378

Transmission Electron Microscope Study on Electrodeposited Gd2O3 and Gd2Zr2O7 Buffer Layers forYBa2Cu307-..delta.. Superconductors  

SciTech Connect

We have investigated the microstructures of electrodeposited Gd{sub 2}O{sub 3} (GO) and Gd{sub 2}Zr{sub 2}O{sub 7} (GZO) buffer layers for YBa{sub 2}Cu{sub 3}O{sub 7-{delta}} (YBCO) superconductors with conventional transmission electron microscopy (TEM). A high density of nanoscale voids was present in the GZO buffer layers. No voids were observed in GO buffer layers grown on GZO. YBCO superconductor grown on the GO/GZO buffer layer structure produced a critical current density (J{sub c}) of 3.3 x 10{sup 6} A/cm{sup 2} at 77 K in zero field.

Zhao, W.; Norman, A.; Phok, S.; Bhattacharya, R.

2008-01-01T23:59:59.000Z

379

Angular distribution of atoms emitted from a SrZrO{sub 3} target by laser ablation under different laser fluences and oxygen pressures  

SciTech Connect

Angular distributions of atoms emitted by laser ablation of perovskite-type oxide SrZrO{sub 3} have been investigated using electron probe microanalysis with wavelength-dispersive spectroscopy and charge-coupled device photography with an interference filter. Each constituent element has been analyzed as a two-modal distribution composed of a broad cos{sup m} {theta} distribution and a narrow cos{sup n} {theta} distribution. The exponent n characterizes the component of laser ablation while the exponent m characterizes that of thermal evaporation, where a larger n or m means a narrower angular distribution. In vacuum, O (n=6) showed a broader distribution than those of Sr (n=16) and Zr (n=17), and Sr{sup +} exhibited a spatial distribution similar to that of Sr. As the laser fluence was increased from 1.1 to 4.4 J/cm{sup 2}, the angular distribution of Sr became narrower. In the laser fluence range of 1.1-4.4 J/cm{sup 2}, broadening of the angular distribution of Sr was observed only at the fluence of 1.1 J/cm{sup 2} under the oxygen pressure of 10 Pa. Monte Carlo simulations were performed to estimate approximately the energy of emitted atoms, focusing on the broadening of the angular distribution under the oxygen pressure of 10 Pa. The energies of emitted atoms were estimated to be 1-20 eV for the laser fluence of 1.1 J/cm{sup 2}, and more than 100 eV for 2.2 and 4.4 J/cm{sup 2}.

Konomi, I.; Motohiro, T.; Azuma, H.; Asaoka, T.; Nakazato, T.; Sato, E.; Shimizu, T.; Fujioka, S.; Sarukura, N.; Nishimura, H. [Toyota Technological Institute, 2-12-1 Hisakata, Tempaku-ku, Nagoya 468-8511, Japan and Toyota Central Research and Development Laboratories, Inc., 41-1 Yokomichi, Nagakute, Aichi 480-1192 (Japan); Toyota Central Research and Development Laboratories, Inc., 41-1 Yokomichi, Nagakute, Aichi 480-1192 (Japan); Institute of Laser Engineering, Osaka University, 2-6 Yamada-oka, Suita, Osaka 565-0871 (Japan)

2010-05-15T23:59:59.000Z

380

Effect of Minor Elements on the Deformation Behavior of Nickel ...  

Science Conference Proceedings (OSTI)

Alloys. DTA Results. HIP Solution. Heat. Weight % Minor Elements. Liquidis. Solidus. Alloy. C. B. Zr. Hf o-. F. "F. TreaiFTemp*. 454. -. 455. 0.018. 456. 0.062. 457.

Note: This page contains sample records for the topic "ra zr hf" 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

Giant energy density in [001]-textured Pb(Mg1/3Nb2/3)O3-PbZrO3-PbTiO3 piezoelectric ceramics  

Science Conference Proceedings (OSTI)

Pb(Zr,Ti)O3 (PZT) based compositions have been challenging to texture or grow in a single crystal form due to the incongruent melting point of ZrO2. Here we demonstrate the method for achieving 90% textured PZT-based ceramics and further show that it can provide highest known energy density in piezoelectric materials through enhancement of piezoelectric charge and voltage coefficients (d and g). Our method provides more than 5 increase in the ratio d(textured)/d(random). A giant magnitude of d g coefficient with value of 59 000 10 15 m2 N 1 (comparable to that of the single crystal counterpart and 359% higher than that of the best commercial compositions) was obtained.

Yan, Yongke [Bio-Inspired Materials and Devices Laboraory (BMDL); Cho, Kyung-Hoon [Bio-Inspired Materials and Devices Laboraory (BMDL); Maurya, Deepam [ORNL; Kumar, Amit [ORNL; Kalinin, Sergei V [ORNL; Khachaturyan, Armen [State University of New Jersey, The; Priya, Shashank [ORNL

2013-01-01T23:59:59.000Z

382

The fluorite related modulated structures of the Gd{sub 2}(Zr{sub 2-x}Ce{sub x})O{sub 7} solid solution: An analogue for Pu disposition  

Science Conference Proceedings (OSTI)

We present an overview of the Gd{sub 2}(Zr{sub 2-x}Ce{sub x})O{sub 7} phase diagram, of interest as a model system for ceramic disposition of Pu (with Ce as a Pu surrogate). The fluorite related structures of this solid solution were determined using a modulated structure approach, to identify the underlying cation and vacancy ordering mechanisms from analysis of key satellite reflections in selected zone axis electron diffraction patterns. This revealed the formation of four structure types: pyrochlore for x1.50. X-ray absorption (XAS) and electron energy loss (EELS) spectra confirmed the presence of Ce{sup 4+} as the dominant species in compositions across this system, remaining analogous to Pu{sup 4+}. - Graphical abstract: Electron diffraction reveals the cation vacancy ordering mechanisms leading to fluorite related superstructures in the Gd{sub 2}(Zr{sub 2-x}Ce{sub x})O{sub 7} solid solution. Highlights: Black-Right-Pointing-Pointer The fluorite related solid solution Gd{sub 2}(Zr{sub 1-x}Ce{sub x})O{sub 7} was prepared by solid state synthesis. Black-Right-Pointing-Pointer Ce L{sub 3} edge XAS and Ce M{sub 4,5} EELS measurements show Ce substitutes as Ce{sup 4+}. Black-Right-Pointing-Pointer Cation and oxygen vacancy ordering results in four fluorite related structures.

Reid, D.P. [Immobilisation Science Laboratory, Department of Materials Science and Engineering, University of Sheffield, Mappin Street, Sheffield S1 3JD (United Kingdom); Stennett, M.C., E-mail: m.c.stennett@sheffield.ac.uk [Immobilisation Science Laboratory, Department of Materials Science and Engineering, University of Sheffield, Mappin Street, Sheffield S1 3JD (United Kingdom); Hyatt, N.C., E-mail: n.c.hyatt@sheffield.ac.uk [Immobilisation Science Laboratory, Department of Materials Science and Engineering, University of Sheffield, Mappin Street, Sheffield S1 3JD (United Kingdom)

2012-07-15T23:59:59.000Z

383

Dielectric Properties and Depoling Characteristics of Pb(Zr(0.95)Ti(0.05))O(3) Based Ceramics: Near-Critical Grain Size Behavior  

Science Conference Proceedings (OSTI)

Chemically prepared Pb(Zr{sub 0.951}Ti{sub 0.949}){sub 0.982}Nb{sub 0.018}O{sub 3} ceramics were fabricated that were greater than 95% dense for sintering temperatures as low as 925 C. Achieving high density at low firing temperatures permitted isolation of the effects of grain size, from those due to porosity, on both dielectric and pressure induced transformation properties. Specifically, two samples of similar high density, but with grain sizes of 0.7 {micro}m and 8.5 {micro}m, respectively, were characterized. The hydrostatic ferroelectric (FE) to antiferroelectric (AFE) transformation pressure was substantially less (150 MPa) for the lower grain size material than for the larger grain size material. In addition, the dielectric constant increased and the Curie temperature decreased for the sample with lower grain size. All three properties: dielectric constant magnitude, Curie point shift, and FE to AFE phase transformation pressure were shown to be semi-quantitatively consistent with internal stress levels on the order of 100 MPa.

RODRIGUEZ,MARK A.; SCOFIELD,TIMOTHY W.; TUTTLE,BRUCE A.; VOIGT,JAMES A.; YANG,PIN; ZEUCH,DAVID H.

1999-09-30T23:59:59.000Z

384

Pressure Induced Phase Transformation of Pb(Zr(0.95)Ti(0.05))O(3) Based Ceramics: Grain Size Dependence  

Science Conference Proceedings (OSTI)

A substantial decrease in hydrostatic ferroelectric (FE) to antiferroelectric (AFE) transformation pressure was measured for Pb(Zr{sub 0.949}Ti{sub 0.051}){sub 0.989}Nb{sub 0.0182}O{sub 3} ceramics with decreasing grain size. The 150 MPa decrease in hydrostatic FE to AFE transformation pressure over the grain size range of 8.5 {micro}m to 0.7{micro}m was shown to be consistent with enhanced internal stress with decreasing grain size. Further, the Curie Point decreased and the dielectric constant measured at 25 C increased with decreasing grain size. All three properties: dielectric constant magnitude, Curie point shift and FE to AFE phase transformation pressure were shown to be semi-quantitatively consistent with internal stress differences on the order of 100 MPa. Calculations of Curie point shifts from the Clausius-Clapeyron equation, using internal stress levels derived from the hydrostatic depoling characteristics, were consistent with measured values.

TUTTLE,BRUCE A.; VOIGT,JAMES A.; SCOFIELD,TIMOTHY W.; ASELAGE,TERRENCE L.; RODRIGUEZ,MARK A.; YANG,PIN; ZEUCH,DAVID H.; OLSON,WALTER R.; SIPOLA,DIANA L.

1999-12-21T23:59:59.000Z

385

One-step electrochemical deposition of a graphene-ZrO2 nanocomposite: Preparation, characterization and application for detection of organophosphorus agents  

SciTech Connect

This paper described the preparation, characterization, and electrochemical properties of a graphene-ZrO2 nanocomposite (GZN) and its application for both the enrichment and detection of methyl parathion (MP). GZN was fabricated using electrochemical deposition and characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS), which showed the successful formation of nanocomposites. Due to the strong affinity to the phosphoric group and the fast electron-transfer kinetics of GZN, both the extraction and electrochemical detection of organophosphorus (OP) agents at the same GZN modified electrochemical sensor was possible. The combination of solid-phase extraction and stripping voltammetric analysis allowed fast, sensitive, and selective determination of MP in garlic samples. The stripping response was highly linear over the MP concentrations ranging from 0.5 ng mL?1 to 100 ng mL?1, with a detection limit of 0.1 ng mL?1. This new nanocomposite-based electrochemical sensor provides an opportunity to develop a field-deployable, sensitive, and quantitative method for monitoring exposure to OPs.

Du, Dan; Liu, Juan; Zhang, Xiao-Yan; Cui, Xiao-Li; Lin, Yuehe

2011-04-27T23:59:59.000Z

386

Electrodeposited Gd2Zr2O7 and Gd2O3 Buffer Layers for YBa2Cu3O7-..delta.. Superconductors  

SciTech Connect

Non-vacuum electrodeposition (ED) was used to prepare a biaxially textured Gd{sub 2}Zr{sub 2}O{sub 7} (GZO) and GZO/Gd{sub 2}O{sub 3} (GO) buffer layer on a Ni-W substrate. The YBa{sub 2}Cu{sub 3}O{sub 7-{delta}} (YBCO) superconductor was deposited by pulsed-laser deposition (PLD) on a simplified ED-GZO and ED-GZO/ED-GO buffer layer. The buffer layers and YBCO superconductor were characterized by X-ray diffraction (including {theta}/2{theta}, pole figure, omega scans, and phi scans) and atomic force microscopy. Full-width at half maximum values of the omega ({omega}) and phi ({phi}) scans of the electrodeposited GZO and GZO/GO layer were better than those of the Ni-W base substrate. At 77 K and a self-magnetic field, the critical current density of PLD YBCO on the electrodeposited-based buffer layer was 3.3 x 10{sup 6} A/cm{sup 2}, using the field criterion of 1 {micro}V/cm.

Bhattacharya, R. N.; Phok, S.

2007-01-01T23:59:59.000Z

387

One-step synthesis of lightly doped porous silicon nanowires in HF/AgNO{sub 3}/H{sub 2}O{sub 2} solution at room temperature  

SciTech Connect

One-step synthesis of lightly doped porous silicon nanowire arrays was achieved by etching the silicon wafer in HF/AgNO{sub 3}/H{sub 2}O{sub 2} solution at room temperature. The lightly doped porous silicon nanowires (pNWs) have circular nanopores on the sidewall, which can emit strong green fluorescence. The surface morphologies of these nanowires could be controlled by simply adjusting the concentration of H{sub 2}O{sub 2}, which influences the distribution of silver nanoparticles (Ag NPs) along the nanowire axis. A mechanism based on Ag NPs-induced lateral etching of nanowires was proposed to explain the formation of pNWs. The controllable and widely applicable synthesis of pNWs will open their potential application to nanoscale photoluminescence devices. - Graphical abstract: The one-step synthesis of porous silicon nanowire arrays is achieved by chemical etching of the lightly doped p-type Si (100) wafer at room temperature. These nanowires exhibit strong green photoluminescence. SEM, TEM, HRTEM and photoluminescence images of pNWs. The scale bars of SEM, TEM HRTEM and photoluminescence are 10 {mu}m, 20 nm, 10 nm, and 1 {mu}m, respectively. Highlights: Black-Right-Pointing-Pointer Simple one-step synthesis of lightly doped porous silicon nanowire arrays is achieved at RT. Black-Right-Pointing-Pointer Etching process and mechanism are illustrated with etching model from a novel standpoint. Black-Right-Pointing-Pointer As-prepared porous silicon nanowire emits strong green fluorescence, proving unique property.

Bai, Fan [School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 165001 (China) [School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 165001 (China); State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing 102206 (China); Li, Meicheng, E-mail: mcli@ncepu.edu.cn [State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing 102206 (China) [State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing 102206 (China); Su Zhou Institute, North China Electric Power University, Suzhou 215123 (China); Song, Dandan; Yu, Hang; Jiang, Bing; Li, Yingfeng [State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing 102206 (China)] [State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing 102206 (China)

2012-12-15T23:59:59.000Z

388

Dynamic response of Cu4Zr54 metallic glass to high strain rate shock loading: plasticity, spall and atomic-level structures  

SciTech Connect

We investigate dynamic response of Cu{sub 46}Zr{sub 54} metallic glass under adiabatic planar shock wave loading (one-dimensional strain) wjth molecular dynamics simulations, including Hugoniot (shock) states, shock-induced plasticity and spallation. The Hugoniot states are obtained up to 60 CPa along with the von Mises shear flow strengths, and the dynamic spall strength, at different strain rates and temperatures. The spall strengths likely represent the limiting values achievable in experiments such as laser ablation. For the steady shock states, a clear elastic-plastic transition is identified (e.g., in the shock velocity-particle velocity curve), and the shear strength shows strain-softening. However, the elastic-plastic transition across the shock front displays transient stress overshoot (hardening) above the Hugoniot elastic limit followed by a relatively sluggish relaxation to the steady shock state, and the plastic shock front steepens with increasing shock strength. The local von Mises shear strain analysis is used to characterize local deformation, and the Voronoi tessellation analysis, the corresponding short-range structures at various stages of shock, release, tension and spallation. The plasticity in this glass is manifested as localized shear transformation zones and of local structure rather than thermal origin, and void nucleation occurs preferentially at the highly shear-deformed regions. The Voronoi and shear strain analyses show that the atoms with different local structures are of different shear resistances that lead to shear localization (e.g., the atoms indexed with (0,0,12,0) are most shear-resistant, and those with (0,2,8,1) are highly prone to shear flow). The dynamic changes in local structures are consistent with the observed deformation dynamics.

Luo, Shengnian [Los Alamos National Laboratory; Arman, Bedri [Los Alamos National Laboratory; Germann, Timothy C [Los Alamos National Laboratory; Cagin, Tahir [TEXAS A& M UNIV

2009-01-01T23:59:59.000Z

389

Investigation of temperature dependence of neutron yield and electron screening potential for the d(d, n){sup 3}He reaction proceeding in deuterides ZrD{sub 2} and TiD{sub 2}  

Science Conference Proceedings (OSTI)

The temperature dependence of the enhancement factor for the dd reaction proceeding in TiD{sub 2} and ZrD{sub 2} is investigated. The experiments were carried out at the Hall pulsed ion accelerator (INP, Polytechnic University, Tomsk, Russia) in the deuteron energy interval 7.0-12.0 keV and at temperatures ranging from 20 to 200 Degree-Sign C. The values obtained for the electron screening potentials indicate that the dd reaction enhancement factor does not depend on the target temperature in the range 20-200 Degree-Sign C. This result contradicts the conclusions drawn by the LUNA Collaboration from their work.

Bystritsky, V. M., E-mail: bystvm@jinr.ru [Joint Institute for Nuclear Research (Russian Federation); Bystritskii, Vit. M. [University of California, Department of Physics and Astronomy (United States); Dudkin, G. N. [National Scientific Research Tomsk Polytechnical University (Russian Federation); Filipowicz, M. [AGH, University of Science and Technology, Faculty of Energy and Fuels (Poland); Gazi, S.; Huran, J. [Institute of Electrical Engineering SAS (Slovakia); Kobzev, A. P. [Joint Institute for Nuclear Research (Russian Federation); Mesyats, G. A. [Lebedev Physical Institute of the Russian Academy of Sciences (Russian Federation); Nechaev, B. A.; Padalko, V. N. [National Scientific Research Tomsk Polytechnical University (Russian Federation); Parzhitskii, S. S. [Joint Institute for Nuclear Research (Russian Federation); Pen'kov, F. M. [Institute of Nuclear Physics NNC (Kazakhstan); Philippov, A. V. [Joint Institute for Nuclear Research (Russian Federation); Kaminskii, V. L. [National Scientific Research Tomsk Polytechnical University (Russian Federation); Tuleushev, Yu. Zh. [Institute of Nuclear Physics NNC (Kazakhstan); Wozniak, J. [AGH, University of Science and Technology, Faculty of Physics and Applied Computer Sciences (Poland)

2012-08-15T23:59:59.000Z

390

X=Hf, V, Nb, Ta  

Science Conference Proceedings (OSTI)

A10: Mechanical Properties and Weld-Ability of Laser Welded Metal Bellows ..... J5: Electrical Conductivity of Diesel-Biodiesel Blends Evaluated by the...

391

Diode Laser Measurements of HF Concentrations From ...  

Science Conference Proceedings (OSTI)

Proceedings of the International Society for Optical Engineering: Photonics ... extinguishers in an occupied space does not present a ... 227-237, 1981. ...

2013-05-03T23:59:59.000Z

392

Dielectric properties and phase transition behaviors in (1-x)PbZrO{sub 3}-xPb(Mg{sub 1/2}W{sub 1/2})O{sub 3} ceramics  

SciTech Connect

The solid solution of lead zirconate [PbZrO{sub 3} (PZ)] and lead magnesium tungstate [Pb(Mg{sub 1/2}W{sub 1/2})O{sub 3} (PMW)] has been synthesized by the wolframite precursor method. The crystal structure, phase transformations, dielectric and thermal properties of (1-x)PZ-xPMW, where x=0.00-0.10, were investigated. The crystal structure of sintered ceramics was analyzed by x-ray diffraction. Phase-pure perovskite was obtained for all compositions. Furthermore, a change from orthorhombic to rhombohedral symmetry was observed as the mole fraction of increased PMW. As a result, it was found that PbZrO{sub 3}-Pb(Mg{sub 1/2}W{sub 1/2})O{sub 3} undergoes successive transitions from the antiferroelectric phase to the ferroelectric phase to the paraelectric state. The coexistence of orthorhombic and rhombohedral phases in this binary system is located near the composition x=0.1.

Vittayakorn, Naratip [College of KMITL Nanotechnology, King Mongkut' s Institute of Technology Ladkrabang, Bangkok 10520 (Thailand); Department of Chemistry, Advanced Materials Science Research Unit, Faculty of Science, King Mongkut' s Institute of Technology Ladkrabang, Bangkok 10520 (Thailand); Thailand Center of Excellence in Physics (ThEP), CHE, 328 Si Ayutthaya Rd., Bangkok 10400 (Thailand); Charoonsuk, Piyanut; Kasiansin, Panisara [Department of Chemistry, Advanced Materials Science Research Unit, Faculty of Science, King Mongkut' s Institute of Technology Ladkrabang, Bangkok 10520 (Thailand); Wirunchit, Supamas [College of KMITL Nanotechnology, King Mongkut' s Institute of Technology Ladkrabang, Bangkok 10520 (Thailand); Thailand Center of Excellence in Physics (ThEP), CHE, 328 Si Ayutthaya Rd., Bangkok 10400 (Thailand); Boonchom, Banjong [King Mongkut' s Institute of Technology Ladkrabang, Chumphon Campus, 17/1 M.6 Pha Thiew District, Chumphon 86160 (Thailand)

2009-09-15T23:59:59.000Z

393

Passivation of In{sub 0.53}Ga{sub 0.47}As/ZrO{sub 2} interfaces by AlN atomic layer deposition process  

SciTech Connect

Reducing defects at III-V/high-k interfaces is essential for optimizing devices built on these materials. Here, the role of an interfacial AlN process at In{sub 0.53}Ga{sub 0.47}As/ZrO{sub 2} interfaces is investigated by hard x-ray photoelectron spectroscopy (HAXPES) and capacitance/voltage (C-V) measurements. C-V measurements show a significant reduction in the density of interface traps with the interfacial AlN process and a capping TiN layer. To elucidate the specific role of the AlN process, blanket films with various deposition processes are compared. The AlN process alone (without subsequent dielectric deposition) reduces InGaAs oxide levels below the HAXPES detection limit, even though the AlN is ultimately found to be oxidized into AlO{sub x} with only trace N incorporation, yet AlN passivation provides a lower D{sub it} (density of interface traps) when compared with an H{sub 2}O-based Al{sub 2}O{sub 3} deposition. The AlN process does not passivate against re-oxidation of the InGaAs during an O{sub 3} based ZrO{sub 2} deposition process, but it does provide passivation against As-As development during subsequent TiN deposition. The role of chemical defects in the C-V characteristics is also discussed.

Weiland, C.; Woick, J. C. [National Institute of Standards and Technology, Gaithersburg, Maryland 20899 (United States); Rumaiz, A. K. [National Synchrotron Light Source, Brookhaven National Laboratory, Upton, New York 11973 (United States); Price, J.; Lysaght, P. [SEMATECH, 257 Fuller Road, Albany, New York 12203 (United States)

2013-07-21T23:59:59.000Z

394

Fluorine for Hydrogen Exchange in the Hydrofluorobenzene Derivatives C6HxF(6-x), where x = 2, 3, 4 and 5 by Monomeric [1,2,4-(Me3C)3C5H2]2CeH; The Solid State Isomerization of [1,2,4-(Me3C)3C5H2]2Ce(2,3,4,5-C6HF4) to [1,2,4-(Me3C)3C5H2]2Ce(2,3,4,6-C6HF4)  

DOE Green Energy (OSTI)

The reaction between monomeric bis(1,2,4-tri-t-butylcyclopentadienyl)cerium hydride, Cp'2CeH, and several hydrofluorobenzene derivatives is described. The aryl derivatives that are the primary products, Cp'2Ce(C6H5-xFx) where x = 1,2,3,4, are thermally stable enough to be isolated in only two cases, since all of them decompose at different rates to Cp'2CeF and a fluorobenzyne; the latter is trapped by either solvent when C6D6 is used or by a Cp'H ring when C6D12 is the solvent. The trapped products are identified by GCMS analysis after hydrolysis. The aryl derivatives are generated cleanly by reaction of the metallacycle, Cp'((Me3C)2C5H2C(Me2)CH2)Ce, with a hydrofluorobenzene and the resulting arylcerium products, in each case, are identified by their 1H and 19F NMR spectra at 20oC. The stereochemical principle that evolves from these studies is that the thermodynamic isomer is the one in which the CeC bond is flanked by two ortho-CF bonds. This orientation is suggested to arise from the negative charge that is localized on the ipso-carbon atom due to Co(delta+)-Fo(delta-) polarization. The preferred regioisomer is determined by thermodynamic rather than kinetic effects; this is illustrated by the quantitative, irreversible solid-state conversion at 25oC over two months of Cp'2Ce(2,3,4,5-C6HF4) to Cp'2Ce(2,3,4,6-C6HF4), an isomerization that involves a CeC(ipso) for C(ortho)F site exchange.

Andersen, Richard; Werkema, Evan L.; Andersen, Richard A.

2008-04-21T23:59:59.000Z

395

Th-Zr (Thorium - Zirconium)  

Science Conference Proceedings (OSTI)

...Th (Thorium) Binary Alloy Phase Diagrams, Alloy Phase Diagrams, Vol 3, ASM Handbook, ASM International,

396

AtomicNuclear Properties  

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

HTML_PAGES HTML_PAGES This AtomicNuclearProperties page is under intermittent development. Suggestions and comments are welcome. Please report errors. Chemical elements: For entries in red, a pull-down menu permits selection of the physical state. Cryogenic liquid densties are at the boiling point at 1 atm. 0n 1Ps 1H 2He 3Li 4Be 5B 6C 7N 8O 9F 10Ne 11Na 12Mg 13Al 14Si 15P 16S 17Cl 18Ar 19K 20Ca 21Sc 22Ti 23V 24Cr 25Mn 26Fe 27Co 28Ni 29Cu 30Zn 31Ga 32Ge 33As 34Se 35Br 36Kr 37Rb 38Sr 39Y 40Zr 41Nb 42Mo 43Tc 44Ru 45Rh 46Pd 47Ag 48Cd 49In 50Sn 51Sb 52Te 53I 54Xe 55Cs 56Ba 57La 72Hf 73Ta 74W 75Re 76Os 77Ir 78Pt 79Au 80Hg 81Tl 82Pb 83Bi 84Po 85At 86Rn 87Fr 88Ra 89Ac 104Rf 105Db 106Sg 107Bh 108Hs 109Mt 110Ds 111Rg 112 113 114 115 116 mt 118

397

The Periodic Table of Elements C  

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

Atomic Number Chemical Symbol Atomic Weight Chemical Name = Solid at room temperature = Liquid at room temperature = Gas at room temperature = Radioactive = Artificially Made KEY METALS NON-METALS 12.011 http://education.jlab.org/ Last revised on April 3, 2013 [294] H Li Na K Be Mg Ca Sc Ti Rb Cs Fr Sr Y Ba Ra Zr Hf Rf V Nb Ta Db Cr Mo W Sg Mn Tc Re Bh Fe Ru Os Hs Co Rh Ir Mt Ni Pd Pt Ds Cu Ag Au Rg Zn Cd Hg Cn Ga In Tl Uut Ge Sn Pb Fl As Sb Bi Uup Se Te Po Lv Br I At Uus Kr Xe Rn Uuo La Ac Ce Th Pr Pa Nd U Pm Np Sm Pu Eu Am Gd Cm Tb Bk Dy Cf Ho Es Er Fm Tm Md Yb Yb No Lu Lr B Al C Si N P O S F Cl Ne He Ar HYDROGEN LITHIUM SODIUM POTASSIUM BERYLLIUM MAGNESIUM CALCIUM SCANDIUM TITANIUM RUBIDIUM CESIUM FRANCIUM STRONTIUM YTTRIUM BARIUM RADIUM ZIRCONIUM HAFNIUM RUTHERFORDIUM VANADIUM NIOBIUM TANTALUM DUBNIUM CHROMIUM MOLYBDENUM TUNGSTEN SEABORGIUM MANGANESE TECHNETIUM RHENIUM BOHRIUM IRON RUTHENIUM OSMIUM HASSIUM

398

The Periodic Table of Elements C  

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

.011 .011 Atomic Number Chemical Symbol Atomic Weight Chemical Name = Solid at room temperature = Liquid at room temperature = Gas at room temperature = Radioactive = Artificially Made KEY METALS NON-METALS http://education.jlab.org/ Last revised on April 3, 2013 [294] H Li Na K Be Mg Ca Sc Ti Rb Cs Fr Sr Y Ba Ra Zr Hf Rf V Nb Ta Db Cr Mo W Sg Mn Tc Re Bh Fe Ru Os Hs Co Rh Ir Mt Ni Pd Pt Ds Cu Ag Au Rg Zn Cd Hg Cn Ga In Tl Uut Ge Sn Pb Fl As Sb Bi Uup Se Te Po Lv Br I At Uus Kr Xe Rn Uuo La Ac Ce Th Pr Pa Nd U Pm Np Sm Pu Eu Am Gd Cm Tb Bk Dy Cf Ho Es Er Fm Tm Md Yb Yb No Lu Lr B Al C Si N P O S F Cl Ne He Ar HYDROGEN LITHIUM SODIUM POTASSIUM BERYLLIUM MAGNESIUM CALCIUM SCANDIUM TITANIUM RUBIDIUM CESIUM FRANCIUM STRONTIUM YTTRIUM BARIUM RADIUM ZIRCONIUM HAFNIUM RUTHERFORDIUM VANADIUM NIOBIUM TANTALUM DUBNIUM CHROMIUM MOLYBDENUM TUNGSTEN SEABORGIUM MANGANESE TECHNETIUM RHENIUM BOHRIUM IRON RUTHENIUM OSMIUM HASSIUM COBALT

399

Investigation on the Fischer-Tropsch synthesis with nitrogen-containing syngas over CoPtZrO{sub 2}/Al{sub 2}O{sub 3} catalyst  

Science Conference Proceedings (OSTI)

The Fischer-Tropsch synthesis with nitrogen-containing syngas derived from combined air partial oxidation and CO{sub 2} reforming of methane has been performed in a fixed-bed reactor. The effects of key factors including reaction temperature, pressure, and nitrogen content of the syngas on the performance of CoPtZrO{sub 2}/Al{sub 2}O{sub 3} catalyst were mainly investigated. The results indicate that the syngas containing a high content of nitrogen is suitable for Fischer-Tropsch synthesis and that a high initial catalytic activity can be achieved under typical operating conditions. The decreasing of catalytic activity with time on stream before reaching steady state was observed, which is mainly due to the blockage of catalyst pores by heavy hydrocarbons. 22 refs., 7 figs.

Dongyan Xu; Hongmin Duan; Wenzhao Li; Hengyong Xu [Chinese Academy of Sciences, Dalian (China). Dalian Institute of Chemical Physics

2006-05-15T23:59:59.000Z

400

Examination Report: OAS-RA-13-23  

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

Area Community Services Employment and Training Council Weatherization Assistance Program Funds Provided by the American Recovery and Reinvestment Act of 2009

Note: This page contains sample records for the topic "ra zr hf" 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

EXAMINATION REPORT: OAS-RA-13-27  

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

Commonwealth of Puerto Rico Energy Affairs Administration Energy Efficiency and Conservation Block Grant Program Funds Provided by the American Recovery and Reinvestment Act of 2009

402

Examination Report: OAS-RA-13-19  

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

Selected Sub-grantees of the Department of Energy's American Recovery and Reinvestment Act of 2009 Illinois State Energy Program

403

Examination Report: OAS-RA-13-14  

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

Connecticut Department of Energy and Environmental Protection Energy Efficiency and Conservation Block Grant Program Funds Provided by the American Recovery and Reinvestment Act of 2009

404

Find a Licensed Professional (PE or RA) Directory | ENERGY STAR  

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Oregon Pennsylvania Rhode Island South Carolina South Dakota Tennessee Texas Utah Vermont Virginia Washington West Virginia Wisconsin Wyoming Search Note: Some of the...

405

Nanocrystals Embedded Zirconium-doped Hafnium Oxide High-k Gate Dielectric Films  

E-Print Network (OSTI)

Nanocrystals embedded zirconium-doped hafnium oxide (ZrHfO) high-k gate dielectric films have been studied for the applications of the future metal oxide semiconductor field effect transistor (MOSFET) and nonvolatile memory. ZrHfO has excellent gate dielectric properties and can be prepared into MOS structure with a low equivalent oxide thickness (EOT). Ruthenium (Ru) modification effects on the ZrHfO high-k MOS capacitor have been investigated. The bulk and interfacial properties changed with the inclusion of Ru nanoparticles. The permittivity of the ZrHfO film was increased while the energy depth of traps involved in the current transport was lowered. However, the barrier height of titanium nitride (TiN)/ZrHfO was not affected by the Ru nanoparticles. These results can be important to the novel metal gate/high-k/Si MOS structure. The Ru-modified ZrHfO gate dielectric film showed a large breakdown voltage and a long lifetime. The conventional polycrystalline Si (poly-Si) charge trapping layer can be replaced by the novel floating gate structure composed of discrete nanodots embedded in the high-k film. By replacing the SiO2 layer with the ZrHfO film, promising memory functions, e.g., low programming voltage and long charge retention time, can be expected. In this study, the ZrHfO high-k MOS capacitors that separately contain nanocrystalline ruthenium oxide (nc-RuO), indium tin oxide (nc-ITO), and zinc oxide (nc-ZnO) have been successfully fabricated by the sputtering deposition method followed with the rapid thermal annealing process. Material and electrical properties of these kinds of memory devices have been investigated using analysis tools such as XPS, XRD, and HRTEM; electrical characterizations such as C-V, J-V, CVS, and frequency-dependent measurements. All capacitors showed an obvious memory window contributed by the charge trapping effect. The formation of the interface at the nc-RuO/ZrHfO and nc-ITO/ZrHfO contact regions was confirmed by the XPS spectra. Charges were deeply trapped to the bulk nanocrystal sites. However, a portion of holes were loosely trapped at the nanocrystal/ZrHfO interface. Charges trapped to the different sites lead to different detrapping characteristics. For further improving the memory functions, the dual-layer nc-ITO and -ZnO embedded ZrHfO gate dielectric stacks have been fabricated. The dual-layer embedded structure contains two vertically-separated nanocrystal layers with a higher density than the single-layer embedded structure. The critical memory functions, e.g., memory window, programming efficiency, and charge retention can be improved by using the dual-layer nanocrystals embedded floating gate structure. This kind of gate dielectric stack is vital for the next-generation nonvolatile memory applications.

Lin, Chen-Han

2011-08-01T23:59:59.000Z

406

Chemical and nuclear properties of Rutherfordium (Element 104)  

Science Conference Proceedings (OSTI)

The chemical-properties of rutherfordium (Rf) and its group 4 homologs were studied by sorption on glass support surfaces coated with cobalt(II)ferrocyanide and by solvent extraction with tributylphosphate (TBP) and triisooctylamine (TIOA). The surface studies showed that the hydrolysis trend in the group 4 elements and the pseudogroup 4 element, lb, decreases in the order Rf>Zr{approx}Hf>Th. This trend was attributed to relativistic effects which predicted that Rf would be more prone to having a coordination number of 6 than 8 in most aqueous solutions due to a destabilization of the 6d{sub 5/2} shell and a stabilization of the 7p{sub l/2} shell. This hydrolysis trend was confirmed in the TBP/HBr solvent extraction studies which showed that the extraction trend decreased in the order Zr>Hf>Rf?Ti for HBr, showing that Rf and Ti did not extract as well because they hydrolyzed more easily than Zr and Hf. The TIOA/HF solvent extraction studies showed that the extraction trend for the group 4 elements decreased in the order Ti>Zr{approx}Hf>Rf, in inverse order from the trend of ionic radii Rf>Zr{approx}Hf>Ti. An attempt was made to produce {sup 263}Rf (a) via the {sup 248}Cm({sup 22}Ne, {alpha}3n) reaction employing thenoyltrifluoroacetone (TTA) solvent extraction chemistry and (b) via the {sup 249}Bk({sup 18}O,4n) reaction employing the Automated Rapid Chemistry Apparatus (ARCA). In the TTA studies, 16 fissions were observed but were all attributed to {sup 256}Fm. No alpha events were observed in the Rf chemical fraction. A 0.2 nb upper limit production cross section for the {sup 248}Cm({sup 22}Ne, {alpha}3n){sup 263}Rf reaction was calculated assuming the 500-sec half-life reported previously by Czerwinski et al. [CZE92A].

Kacher, C.D.

1995-10-30T23:59:59.000Z

407

Measurement of astrophysical S factors and electron screening potentials for d(d, n){sup 3}He reaction In ZrD{sub 2}, TiD{sub 2}, D{sub 2}O, and CD{sub 2} targets in the ultralow energy region using plasma accelerators  

Science Conference Proceedings (OSTI)

The paper is devoted to study electron screening effect influence on the rate of d(d, n){sup 3}He reaction in the ultralow deuteron collision energy range in the deuterated polyethylene (CD{sub 2}), frozen heavy water (D{sub 2}O) and deuterated metals (ZrD{sub 2} and TiD{sub 2}). The ZrD{sub 2} and TiD{sub 2} targets were fabricated via magnetron sputtering of titanium and zirconium in gas (deuterium) environment. The experiments have been carried out using high-current plasma pulsed accelerator with forming of inverse Z pinch (HCEIRAS, Russia) and pulsed Hall plasma accelerator (NPI at TPU, Russia). The detection of neutrons with energy of 2.5MeV from dd reaction was done with plastic scintillation spectrometers. As a result of the experiments the energy dependences of astrophysical S factor for the dd reaction in the deuteron collision energy range of 2-7 keV and the values of the electron screening potential U{sub e} of interacting deuterons have been measured for the indicated above target: U{sub e}(CD{sub 2}) Less-Than-Or-Slanted-Equal-To 40 eV; U{sub e}(D{sub 2}O) Less-Than-Or-Slanted-Equal-To 26 eV; U{sub e}(ZrD{sub 2}) = 157 {+-} 43 eV; U{sub e}(TiD{sub 2}) = 125{+-}34 eV. The value of astrophysical S factor, corresponding to the deuteron collision energy equal to zero, in the experiments with D{sub 2}O target is found: S{sub b}(0) = 58.6 {+-} 3.6 keV b. The paper compares our results with other available published experimental and calculated data.

Bystritsky, V. M. [Joint Institute for Nuclear Research (Russian Federation); Bystritskii, Vit. M. [University of California, Department of Physics and Astronomy (United States); Dudkin, G. N. [National Scientific Research Tomsk Polytechnical University (Russian Federation); Filipowicz, M. [University of Science and Technology, Faculty of Fuels and Energy, AGH (Poland); Gazi, S.; Huran, J. [Institute of Electrical Engineering SAS (Slovakia); Kobzev, A. P. [Joint Institute for Nuclear Research (Russian Federation); Mesyats, G. A. [Lebedev Physical Institute of the Russian Academy of Sciences (Russian Federation); Nechaev, B. A.; Padalko, V. N. [National Scientific Research Tomsk Polytechnical University (Russian Federation); Parzhitskii, S. S. [Joint Institute for Nuclear Research (Russian Federation); Pen'kov, F. M. [Institute of Nuclear Physics NNC (Kazakhstan); Philippov, A. V. [Joint Institute for Nuclear Research (Russian Federation); Kaminskii, V. L. [National Scientific Research Tomsk Polytechnical University (Russian Federation); Tuleushev, Yu. Zh. [Institute of Nuclear Physics NNC (Kazakhstan); Wozniak, J. [University of Science and Technology, Faculty of Physics and Applied Computer Sciences, AGH (Poland)

2012-01-15T23:59:59.000Z

408

CONSTRUCTION MATERIALS FOR THE HYDROFLUORINATOR OF THE FLUORIDE-VOLATILITY PROCESS  

DOE Green Energy (OSTI)

Fuel elements clad with Zr or containing Zr as a diluent can be recovered by a fluoride-volatility process. The first step consists of hydrofluorination of the elements in a bath of molten fluoride salts using an HF sparge. In this case the two salt systems considered were NaF-ZrF/sub 4/ and NaF- LiF. Materials evaluated at Battelle for possible use in the construction of this hydrofluorinator include Inconel, A'' Nickel, copper, silver, Monel, Hastelloy B, Hastelloy W, INOR-1, and INOR-8. The metals were exposed to molten fluoride salts through which HF was bubbled continuously. The data indicate that the NaF-LiF systems are much more corrosive than the NaF-ZrF/sub 4/ system. The systems are most corrosive when the alkali fluoride component is high. An elevation in temperature increases the corrosion significantly as does an increase in the HF flow rate. Hydrogen in the HF flow stream retards the corrosion of the sodiumzirconium salts significantly, but appears to have less effect on the sodium -lithium systems. The areas at the interface of the liquid and vapor phases were most seriously damaged under the exposure conditions usually used. However, appreciable reduction in attack was experienced when zirconium was actually hydrofluorinated. INOR-8 was the most promising of the materials evaluated. (auth)

Miller, P.D.; Peterson, C.L.; Stewart, O.M.; Stephan, E.F.; Fink, F.W.

1959-06-01T23:59:59.000Z

409

Emissivity enhancement coatings for thermophotovoltaic (TPV) radiator applications  

DOE Green Energy (OSTI)

Ten emissivity enhancing coatings (ZrO{sub 2} + 18% TiO{sub 2} + 10% Y{sub 2}O{sub 3}, Cr{sub 2}O{sub 3}, ZrC, Fe{sub 2}TiO{sub 5}, ZrTiO{sub 4}, ZrO{sub 2} + 8% Y{sub 2}O{sub 3} + 2% HfO{sub 2}, TiC, TiC + 5% Al{sub 2}O{sub 3} + 5% TiO{sub 2}, ZrB{sub 2}, and ZrB{sub 2} + 10% MoSi{sub 2}) deposited on Mo, Nb, and Haynes 230 substrates were evaluated for potential use in thermophotovoltaic (TPV) radiator applications. Emissivity testing of as-coated and annealed coupons indicate that 5 of the 10 Vacuum Plasma Spray (VPS) coating candidates have promise (ZrO{sub 2} + 18% TiO{sub 2} + 10% Y{sub 2}O{sub 3}, ZrC, Fe{sub 2}TiO{sub 5}, ZrTiO{sub 4}, ZrO{sub 2} + 8% Y{sub 2}O{sub 3} + 2% HfO{sub 2}). Four of the ten coatings have emissivity values that are too low to be of further interest (TiC, TiC + 5% Al{sub 2}O{sub 3} + 5% TiO{sub 2}, ZrB{sub 2}, and ZrB{sub 2} + 10% MoSi{sub 2}). The final coating was mostly Cr{sub 2}O{sub 3}, and exhibited excessive evaporation during vacuum annealing with a significant decrease in emissivity. Base metal powder, which was added to the bond layer of all coatings to improve coating adhesion, was detected in the top layer of the coatings. Differences in reactive interaction between the base metal powder and coating during vacuum annealing produced varying changes in emissivity. A small decrease in emissivity was observed for the ZrC coating deposited on niobium, which agrees with the limited interaction between the niobium base metal particles and the ZrC coating detected in SEM/EDS examinations. A large decrease in emissivity was observed for the ZrC coating deposited on Haynes 230, and significant interaction between the base metal particles and ZrC coating was observed.

Yue, J.J.; Cockeram, B.V.

1998-12-01T23:59:59.000Z

410

Hydrogen Isotope Effects of Ti, Zr Metals  

Science Conference Proceedings (OSTI)

Interaction with Materials / Proceedings of the Ninth International Conference on Tritium Science and Technology (Part 2)

Xinggui Long; Gang Huang; Shuming Peng; Jianhua Liang; Benfu Yang

411

Instrumental Uncertainties in ZR Relations  

Science Conference Proceedings (OSTI)

Intercomparisons among three different sensors for ground-based measurement of drop size distributions are presented: the JossWaldvogel distrometer, the optical spectro-pluviometer, and the precipitation occurrence sensor system. Data ...

Edwin Campos; Isztar Zawadzki

2000-07-01T23:59:59.000Z

412

A Z-R Relationship for Hurricanes  

Science Conference Proceedings (OSTI)

Drop-size measurements taken during hurricane research flight missions at altitudes at or below 3 km were used to derive a relationship between reflectivity factor and rainfall rate. The instrument used in this study is the Knollenberg Particle ...

David P. Jorgensen; Paul T. Willis

1982-03-01T23:59:59.000Z

413

Interdiffusion Kinetics in U-Zr  

Science Conference Proceedings (OSTI)

Conference Tools for 2012 TMS Annual Meeting & Exhibition ... Prepared by LLNL under Contract DE-AC52-07NA27344. Proceedings Inclusion? Planned: ... Effects of Laser Shock Peening on Residual Stress, Microstructure and Corrosion Behavior of Alloy 600 Effects of .... Contact programming@programmaster.org.

414

The Development and Performance of Novel Pt+Hf-Modified ?  

Science Conference Proceedings (OSTI)

Within the ?? composition space assessed in this study, that value is ~0.02. ..... Applications, Journal of Propulsion and Power, 22 (2006),. 375-383. 3. S. Bose...

415

HF Emission Reduction from Anode Butts Using Covered Trays  

Science Conference Proceedings (OSTI)

Maximize Efficiency and Safety of Smelters through Advanced Multipurpose Simulator ... Multivariate Statistical Investigation of Carbon Consumption for HSS ...

416

HF Doppler Measurements of Mesospheric Gravity Wave Momentum Fluxes  

Science Conference Proceedings (OSTI)

Recent theoretical studies have emphasized the probable importance of internal gravity waves in balancing the momentum budget of the mesosphere. In this paper, we propose a method by which the vertical flux of horizontal momentum can be measured ...

R. A. Vincent; I. M. Reid

1983-05-01T23:59:59.000Z

417

Thermodynamic Modeling of the Cu-Hf System  

Science Conference Proceedings (OSTI)

Proceedings Inclusion? Planned: A CD-only volume ... Studies on Vibrational Entropy in Alloys Using Inelastic Neutron Scattering at ORNL Surface Prefreezing...

418

A. Vinegar', ER Kinkead', HF Leahy', JH English , and GW ...  

Science Conference Proceedings (OSTI)

... Urinary bladder Je jmum Ileum Salivary glands Esophagus Stomach ... Thyroid w/parathyroid Nasal turbinates Zymbal gland Pancreas Lachrymal ...

2011-10-18T23:59:59.000Z

419

Physical Properties of Pyridinium Fluorohydrogenate, Pyr(HF) ...  

Science Conference Proceedings (OSTI)

... and super- capacitors, in electroplating baths, as designer solvents, and as reaction media. A few of the desired properties of a super-capacitor ...

2006-07-20T23:59:59.000Z

420

Correlation between Moisture and HF Formation in the Aluminium ...  

Science Conference Proceedings (OSTI)

Retrofit of a Combined Breaker Feeder with a Chisel Bath Contact Detection System to Reduce Anode Effect Frequency in a Potroom Simulating Traffic in a...

Note: This page contains sample records for the topic "ra zr hf" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
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to obtain the most current and comprehensive results.


421

Reduction in HF Emission Through Improvement in Operational ...  

Science Conference Proceedings (OSTI)

The Effect of Calcium Fluoride on Alumina Solubility in Low Temperature Cryolite Melts The First Results of the Industrial Application of the EcoSoderberg...

422

Detection and characterization of geomagnetic pulsations using HF ionospheric heating  

SciTech Connect

This paper describes the geomagnetic pulsations observed in the high-latitude ionosphere during an experiment dealing with the ionospheric generation of ELF/VLF EM waves in June and October 1987. There was clear evidence of geomagnetic pulsations intermixed with the ELF/VLF signals in both the magnitude and phase data. A simple simulation model is introduced to facilitate the interpretation of the data, and a procedure for characterizing the pulsation is described. 5 refs.

Lee, H.S.; Ferraro, A.J.; Olson, J.V. (Pennsylvania State Univ., University Park (USA) Alaska Univ., Fairbanks (USA))

1990-12-01T23:59:59.000Z

423

Signal Sampling Impacts on HF Radar Wave Measurement  

Science Conference Proceedings (OSTI)

Averaging is required for the measurement of ocean surface wave spectra and parameters with any measurement system in order to reduce the variance in the estimates. Sampling theory for buoy measurements is well known. The same theory can be ...

Lucy R. Wyatt; J. Jim Green; Andrew Middleditch

2009-04-01T23:59:59.000Z

424

Glass Forming Ability and Mechanical Properties of Zr-based Zr-Al ...  

Science Conference Proceedings (OSTI)

A Study on the Structure and Mechanical Properties of HSS T42 Steel Using Powder Injection Moulding Method (PIM) A Thermo-Kinetic Model and...

425

Charge Optimized Many Body (COMB) Potential for the Zr-ZrO2 ...  

Science Conference Proceedings (OSTI)

Nanofluid-Based Coatings to Mitigate Fuel Cladding Chemical Interactions (FCCI ) ... Steel Z3CN20.09M for Primary Coolant Pipe of Nuclear Power Plants and Its ... Changes and Corrosion Resistance of Ti-5Ta-2Nb/304L SS Explosive Clads...

426

Multilayer ultra-high-temperature ceramic coatings  

SciTech Connect

A coated carbon-carbon composite material with multiple ceramic layers to provide oxidation protection from ultra-high-temperatures, where if the carbon-carbon composite material is uninhibited with B.sub.4C particles, then the first layer on the composite material is selected from ZrB.sub.2 and HfB.sub.2, onto which is coated a layer of SiC coated and if the carbon-carbon composite material is inhibited with B.sub.4C particles, then protection can be achieved with a layer of SiC and a layer of either ZrB.sub.2 and HfB.sub.2 in any order.

Loehman, Ronald E. (Albuquerque, NM); Corral, Erica L. (Tucson, AZ)

2012-03-20T23:59:59.000Z

427

Audit Report: OAS-RA-10-12 | Department of Energy  

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

2010 The Department of Energy's American Recovery and Reinvestment Act -Florida State Energy Program The Department of Energy's Office of Energy Efficiency and Renewable Energy...

428

Audit Letter Report: OAS-RA-L-10-06 | Department of Energy  

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

Federal funding is based on a grant formula that considers the population and energy consumption in each state, and amounted to 25 million for Fiscal Year (FY) 2009. The American...

429

UNITED STATE% ENGINEER OFFICE I" RaCLI MANHATTAN D' ISTRICT  

Office of Legacy Management (LM)

of th6 CQn%racting Offbrr.or hi@ &&t slu%hari6..%ei mbirotra&im tattJU5;l ,%ha Cc?n%motor raqr irlbn 3 paymrlts to , in a&am% outi oi thr apaW a-, QF 2wr or' mr;liiop ' or...

430

Microsoft Word - DT_DT-2012-01-0012.RA_Piette.doc  

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

4E 4E Intelligent Building Energy Information and Control Systems for Low-Energy Operations and Optimal Demand Response Mary Ann Piette, Jessica Granderson, Michael Wetter, Sila Kiliccote Lawrence Berkeley National Laboratory May 2012 Published in IEEE Design and Test of Computers DISCLAIMER This document was prepared as an account of work sponsored by the United States Government. While this document is believed to contain correct information, neither the United States Government nor any agency thereof, nor The Regents of the University of California, nor any of their employees, makes any warranty, express or implied, or assumes any legal responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe

431

EFFECT OF O2 ON SIC VOLATILIZATION RATE. R.A. Mendybaev1,3  

E-Print Network (OSTI)

previous work on the volatilization rate of SiC in reducing gases [1, 2] was restricted to IW-2.8 and IW-6 us to estimate lifetimes of interstellar SiC grains (several months at 1200¡C) in a gas of solar lifetimes of inter- stellar SiC grains were significantly different from those we calculated previously

Grossman, Lawrence

432

The Cult of Radrap (Ra dgra), nep of Wangdue Phodrang (Bhutan)  

E-Print Network (OSTI)

), to protect the Doctrine of Buddha. At an unspecified period, when Mendi Phud Nidup, a trader from Khothangkha village5 went to Tibet, he met this btsan. The trader, realising the power of the btsan, tempted him to come to his village as their general (dmag... to 8 Na stands for sick while ri could mean mountain or forest. 9 Shob means lie. 10 The version of the encounter of Radrap and Mendi Phub Nidup was recounted orally by the residents mentioned here below. The interviews were conducted...

Dorji, Tandin

2008-01-01T23:59:59.000Z

433

Audit Report: OAS-RA-12-06 | Department of Energy  

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

The Management of Post-Recovery Act Workforce Transition at Office of Environmental Management Sites We conducted an audit to determine whether the Department of Energy...

434

Audit Report: OAS-RA-L-12-05 | Department of Energy  

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

July 10, 2012 Follow-up on the Department of Energy's Implementation of the Advanced Batteries and Hybrid Components Program Funded under the American Recovery and Reinvestment...

435

Audit Report: OAS-RA-09-03 | Department of Energy  

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

Protection Agency reported that, without aggressive conservation measures, data center energy consumption alone is expected to double over the next five years. In our...

436

Audit Report: OAS-RA-10-09 | Department of Energy  

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

(states) to support their energy priorities through the State Energy Program (SEP). Federal funding is based on a grant formula that considers the population and energy...

437

Examination Report: OAS-RA-13-06 | Department of Energy  

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

Program) received 5 billion to reduce energy consumption for low-income households through energy efficient upgrades. The State of Maryland (State) received 61...

438

8 Research Activities 2012 CiRA: Center for iPS Cell Research and Application  

E-Print Network (OSTI)

management policies of their countries of origin. The Ministry of Education, Culture, Sports, Science to investigate the substation of rare-metals with alternative abundant elements in order to solve such resource issues and strengthen Japanese industry. This project aims to develop rare-metal free materials in four

Takada, Shoji

439

Audit Report: OAS-RA-13-29 | Department of Energy  

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

of Energy's Vehicle Technologies Program aims to decrease U.S. oil dependence by developing and deploying advanced transportation technologies. The scope of the Program...

440

Audit Report: OAS-RA-L-11-02 | Department of Energy  

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

Audit of Environmental Cleanup Projects Funded by the Recovery Act at the Y-12 National Security Complex In February 2009, the President signed the American Recovery and...

Note: This page contains sample records for the topic "ra zr hf" 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

Executive Director for Operations /RA/ SUBJECT: PROPOSED RULEMAKINGPOST-FIRE OPERATOR MANUAL ACTIONS (RIN 3150  

E-Print Network (OSTI)

To obtain Commission approval to publish the proposed rule, including the issue of the need for an interim enforcement discretion policy and make available the draft regulatory guide and other supporting documents for public comment. BACKGROUND: In SECY-03-0100, Rulemaking Plan on Post-Fire Operator Manual Actions, dated June 17, 2003, the staff recommended revising the existing fire protection regulation in paragraph III.G.2 of Appendix R to 10 CFR Part 50 to include operator manual actions. These actions are needed to ensure that a redundant train of systems necessary to achieve and maintain hot shutdown conditions located within the same area outside the primary containment is free of fire damage. In an SRM dated September 12, 2003, the Commission approved the staffs recommendation to revise the fire protection program requirements in Appendix R and the associated guidance. The Commission also approved the staffs plan to develop an interim enforcement policy to deal with compliance issues until the guidance and final rule are implemented. CONTACT:

Luis A. Reyes; David Diec Nrr/drip

2004-01-01T23:59:59.000Z

442

Audit Report: OAS-RA-12-09 | Department of Energy  

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

Energy Works Loan Fund, installation of bike racks, solar compacting litter baskets and solar panel installation. The competitive grant projects focused on a commercial retrofit...

443

I DOE/RA/50354 FEASIBILITY STUDY FOR A 1~--QfY FUEL ETHANOL...  

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

to agitate the tank. Chilled water necessary for mash cooling will be produced by a commercial refrigeration unit located near the fermenters. At the end of the fermentation...

444

Examination Report: OAS-RA-13-24 | Department of Energy  

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

Act of 2009 (Recovery Act) was enacted to promote economic prosperity through job creation and encourage investment in the Nation's energy future. As part of the Recovery Act,...

445

Appendix D 2008 Residential Appendices RA4 D-1 2008 Residential Compliance Manual August 2009  

E-Print Network (OSTI)

eligibility and installation criteria to be modeled by any ACM and receive energy credit for compliance of the truss/rafter (top chord). A minimum air space shall be maintained between the top surface of the radiant of the ceiling insulation to allow ventilation air to flow between the roof decking and #12;Appendix D 2008

446

Symmetry or asymmetry of kETand ismvs. potential curves R.A. Marcus  

E-Print Network (OSTI)

arises is how the potential drop between the two `reactants' affects the behaviour. We explore. Outside the `normal region' (lev1 > A in those equations) the electron or hole goes into levels distant at a substantial bias potential is assured by the electron or hole always going into the distant levels

Marcus, Rudolph A.

447

Deux remarques a propos du developpement du ra-btags en tibetain parle  

E-Print Network (OSTI)

P/ ait vraiment une relation de cor- respondance directe avec le tibtain ancien, car ce mot se prononce au ton haut. Les mots ayant linitiale #d- en tibtain dveloppent normalement un ton bas. Donc, /uP/ ne correspond pas exactement drug en...

Suzuki, Hiroyuki

2009-01-01T23:59:59.000Z

448

Audit Report: OAS-RA-11-11 | Department of Energy  

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

Reports Calendar Year Reports Recovery Act Peer Reviews DOE Directives Performance Strategic Plan Testimony Financial Statements Semiannual Reports Work Plan Mission About Us...

449

Audit Report: OAS-RA-09-04 | Department of Energy  

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

Reports Calendar Year Reports Recovery Act Peer Reviews DOE Directives Performance Strategic Plan Testimony Financial Statements Semiannual Reports Work Plan Mission About Us...

450

Audit Report: OAS-RA-L-13-04 | Department of Energy  

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

FOIA Reports Calendar Year Reports Recovery Act Peer Reviews DOE Directives Performance Strategic Plan Testimony Financial Statements Semiannual Reports Work Plan Mission About...

451

Audit Report: OAS-RA-11-15 | Department of Energy  

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

FOIA Reports Calendar Year Reports Recovery Act Peer Reviews DOE Directives Performance Strategic Plan Testimony Financial Statements Semiannual Reports Work Plan Mission About...

452

Audit Report: OAS-RA-11-10 | Department of Energy  

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

FOIA Reports Calendar Year Reports Recovery Act Peer Reviews DOE Directives Performance Strategic Plan Testimony Financial Statements Semiannual Reports Work Plan Mission About...

453

Audit Report: OAS-RA-12-02 | Department of Energy  

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

FOIA Reports Calendar Year Reports Recovery Act Peer Reviews DOE Directives Performance Strategic Plan Testimony Financial Statements Semiannual Reports Work Plan Mission About...

454

Audit Report: OAS-RA-11-06 | Department of Energy  

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

FOIA Reports Calendar Year Reports Recovery Act Peer Reviews DOE Directives Performance Strategic Plan Testimony Financial Statements Semiannual Reports Work Plan Mission About...

455

Audit Report: OAS-RA-L-11-03 | Department of Energy  

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

FOIA Reports Calendar Year Reports Recovery Act Peer Reviews DOE Directives Performance Strategic Plan Testimony Financial Statements Semiannual Reports Work Plan Mission About...

456

Audit Report: OAS-RA-11-09 | Department of Energy  

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

FOIA Reports Calendar Year Reports Recovery Act Peer Reviews DOE Directives Performance Strategic Plan Testimony Financial Statements Semiannual Reports Work Plan Mission About...

457

Management Alert: OAS-RA-11-16 | Department of Energy  

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

FOIA Reports Calendar Year Reports Recovery Act Peer Reviews DOE Directives Performance Strategic Plan Testimony Financial Statements Semiannual Reports Work Plan Mission About...

458

Audit Report: OAS-RA-L-11-12 | Department of Energy  

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

FOIA Reports Calendar Year Reports Recovery Act Peer Reviews DOE Directives Performance Strategic Plan Testimony Financial Statements Semiannual Reports Work Plan Mission About...

459

Audit Report: OAS-RA-L-11-06 | Department of Energy  

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

FOIA Reports Calendar Year Reports Recovery Act Peer Reviews DOE Directives Performance Strategic Plan Testimony Financial Statements Semiannual Reports Work Plan Mission About...

460

Management Alert: OAS-RA-12-01 | Department of Energy  

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

FOIA Reports Calendar Year Reports Recovery Act Peer Reviews DOE Directives Performance Strategic Plan Testimony Financial Statements Semiannual Reports Work Plan Mission About...

Note: This page contains sample records for the topic "ra zr hf" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
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461

Audit Report: OAS-RA-L-11-07 | Department of Energy  

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

FOIA Reports Calendar Year Reports Recovery Act Peer Reviews DOE Directives Performance Strategic Plan Testimony Financial Statements Semiannual Reports Work Plan Mission About...

462

Audit Report: OAS-RA-L-11-10 | Department of Energy  

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

FOIA Reports Calendar Year Reports Recovery Act Peer Reviews DOE Directives Performance Strategic Plan Testimony Financial Statements Semiannual Reports Work Plan Mission About...

463

Audit Letter Report: OAS-RA-L-11-05 | Department of Energy  

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

FOIA Reports Calendar Year Reports Recovery Act Peer Reviews DOE Directives Performance Strategic Plan Testimony Financial Statements Semiannual Reports Work Plan Mission About...

464

Audit Report: OAS-RA-11-14 | Department of Energy  

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

FOIA Reports Calendar Year Reports Recovery Act Peer Reviews DOE Directives Performance Strategic Plan Testimony Financial Statements Semiannual Reports Work Plan Mission About...

465

Audit Report: OAS-RA-11-13 | Department of Energy  

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

FOIA Reports Calendar Year Reports Recovery Act Peer Reviews DOE Directives Performance Strategic Plan Testimony Financial Statements Semiannual Reports Work Plan Mission About...

466

Audit Report: OAS-RA-L-11-09 | Department of Energy  

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

FOIA Reports Calendar Year Reports Recovery Act Peer Reviews DOE Directives Performance Strategic Plan Testimony Financial Statements Semiannual Reports Work Plan Mission About...

467

Audit Report: OAS-RA-11-12 | Department of Energy  

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

FOIA Reports Calendar Year Reports Recovery Act Peer Reviews DOE Directives Performance Strategic Plan Testimony Financial Statements Semiannual Reports Work Plan Mission About...

468

MIGRATION BEHAVIOR OF THE 234U -> 230TH -> 226Ra -> DECAY CHAIN  

E-Print Network (OSTI)

Release of Decaying Radionuclides Through Sorbing Media,"the Migration of Radionuclides Through Geologic Media," UCB-for the Migration of Radionuclides Through Sorbing Media

Higashi, K.

2013-01-01T23:59:59.000Z

469

Inspection Report: INS-RA-12-01 | Department of Energy  

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

had made approximately 133,000 in capital expenditures without the prior approval from Arizona as required by Office of Management and Budget (OMB) Circular A-87. Also, WACOG...

470

Audit Report: OAS-RA-L-11-08 | Department of Energy  

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

Act of 2009 Funds on Solid Waste Project Activities at the Department of Energy's Hanford Site The Department of Energy's (Department), Richland Operations Office (Richland),...

471

Special Report: OAS-RA-14-01 | Department of Energy  

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

goals, including completing planned EV charger installations and the collection of electric vehicle usage data, was not provided even though the data had a readily apparent..