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Note: This page contains sample records for the topic "momentive performance materials" 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.


1

Momentive Performance Materials Distillation Intercharger  

E-Print Network [OSTI]

Presenter: Nicki (Collins) Boucher Project Team: T. Baisley, C. Beers, R. Cameron, K. Holman, T. Kotkoskie, K. Norris Momentive Performance Materials Inc. Waterford, NY May 23, 2013 Industrial Energy Technology Conference ACC Responsible... Care? Energy Efficiency Program Momentive Performance Materials Distillation Interchanger ESL-IE-13-05-20 Proceedings of the Thrity-Fifth Industrial Energy Technology Conference New Orleans, LA. May 21-24, 2013 Copyright 2013 Momentive Performance...

Boucher, N.; Baisley, T.; Beers, C.; Cameron, R.; Holman, K.; Kotkoskie, T.; Norris, K.

2013-01-01T23:59:59.000Z

2

Momentive Performance Materials Inc MPM | Open Energy Information  

Open Energy Info (EERE)

Momentive Performance Materials Inc MPM Momentive Performance Materials Inc MPM Jump to: navigation, search Name Momentive Performance Materials Inc (MPM) Place Albany, New York Zip 12211 Product New York-based subsidiary that operates in two segments namely silicones and quartz. These versatile materials help enable new developments across industrial and consumer applications. Coordinates 42.707237°, -89.436378° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":42.707237,"lon":-89.436378,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

3

SEISMIC PERFORMANCE EVALUATION FOR STEEL MOMENT FRAMES By Seung-Yul Yun1  

E-Print Network [OSTI]

SEISMIC PERFORMANCE EVALUATION FOR STEEL MOMENT FRAMES By Seung-Yul Yun1 , Ronald O. Hamburger2 , C than existing buildings designed and built with older technologies. Key words: seismic behavior; seismic performance evaluation; performance-based design; earthquake engineering; steel moment frame

Sweetman, Bert

4

NREL: Photovoltaics Research - Materials Applications and Performance...  

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

Photovoltaics Research Printable Version Materials Applications & Performance Staff The materials applications & performance staff members at the National Renewable Energy...

5

NREL: Photovoltaics Research - Materials Applications and Performance...  

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

about the scientists specializing in each area of PV research: National Center for Photovoltaics research staff Materials Applications and Performance research staff Materials...

6

Materials Performance in USC Steam  

SciTech Connect (OSTI)

The proposed steam inlet temperature in the Advanced Ultra Supercritical (A-USC) steam turbine is high enough (760 C) that traditional turbine casing and valve body materials such as ferritic/martensitic steels will not suffice due to temperature limitations of this class of materials. Cast versions of several traditionally wrought Ni-based superalloys were evaluated for use as casing or valve components for the next generation of industrial steam turbines. The full size castings are substantial: 2-5,000 kg each half and on the order of 100 cm thick. Experimental castings were quite a bit smaller, but section size was retained and cooling rate controlled to produce equivalent microstructures. A multi-step homogenization heat treatment was developed to better deploy the alloy constituents. The most successful of these cast alloys in terms of creep strength (Haynes 263, Haynes 282, and Nimonic 105) were subsequently evaluated by characterizing their microstructure as well as their steam oxidation resistance (at 760 and 800 C).

G. R. Holcomb, P. Wang, P. D. Jablonski, and J. A. Hawk

2010-05-01T23:59:59.000Z

7

HIGH-PERFORMANCE COATING MATERIALS  

SciTech Connect (OSTI)

Corrosion, erosion, oxidation, and fouling by scale deposits impose critical issues in selecting the metal components used at geothermal power plants operating at brine temperatures up to 300 C. Replacing these components is very costly and time consuming. Currently, components made of titanium alloy and stainless steel commonly are employed for dealing with these problems. However, another major consideration in using these metals is not only that they are considerably more expensive than carbon steel, but also the susceptibility of corrosion-preventing passive oxide layers that develop on their outermost surface sites to reactions with brine-induced scales, such as silicate, silica, and calcite. Such reactions lead to the formation of strong interfacial bonds between the scales and oxide layers, causing the accumulation of multiple layers of scales, and the impairment of the plant component's function and efficacy; furthermore, a substantial amount of time is entailed in removing them. This cleaning operation essential for reusing the components is one of the factors causing the increase in the plant's maintenance costs. If inexpensive carbon steel components could be coated and lined with cost-effective high-hydrothermal temperature stable, anti-corrosion, -oxidation, and -fouling materials, this would improve the power plant's economic factors by engendering a considerable reduction in capital investment, and a decrease in the costs of operations and maintenance through optimized maintenance schedules.

SUGAMA,T.

2007-01-01T23:59:59.000Z

8

ALS Ceramics Materials Research Advances Engine Performance  

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

ALS Ceramics Materials Research ALS Ceramics Materials Research Advances Engine Performance ALS Ceramics Materials Research Advances Engine Performance Print Thursday, 27 September 2012 00:00 ritchie ceramics This 3D image of a ceramic composite specimen imaged under load at 1750C shows the detailed fracture patterns that researchers are able to view using ALS Beamline 8.3.2. The vertical white lines are the individual silicon carbide fibers in this sample about 500 microns in diameter. LBNL senior materials scientist and U.C. Berkeley professor Rob Ritchie has been researching the fracture behavior of a wide array of materials for the past 40 years, the last ten of them using the facilities at the ALS. From human bone to synthetic engineering materials such as shape-memory metals

9

ALS Ceramics Materials Research Advances Engine Performance  

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

ALS Ceramics Materials Research ALS Ceramics Materials Research Advances Engine Performance ALS Ceramics Materials Research Advances Engine Performance Print Thursday, 27 September 2012 00:00 LBNL senior materials scientist and UC Berkeley professor Rob Ritchie has been researching the fracture behavior of a wide array of materials for the past 40 years, the last ten of them using the facilities at the ALS. From human bone to synthetic engineering materials such as shape-memory metals and composites, Ritchie has illuminated groundbreaking cracking patterns and the underlying mechanistic processes using the x-ray synchrotron micro-tomography at ALS Beamline 8.3.2. Summary Slide ritchie ceramics This 3D image of a ceramic composite specimen imaged under load at 1750C shows the detailed fracture patterns that researchers are able to view using ALS Beamline 8.3.2. The vertical white lines are the individual silicon carbide fibers in this sample about 500 microns in diameter.

10

ALS Ceramics Materials Research Advances Engine Performance  

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

ALS Ceramics Materials Research ALS Ceramics Materials Research Advances Engine Performance ALS Ceramics Materials Research Advances Engine Performance Print Thursday, 27 September 2012 00:00 ritchie ceramics This 3D image of a ceramic composite specimen imaged under load at 1750C shows the detailed fracture patterns that researchers are able to view using ALS Beamline 8.3.2. The vertical white lines are the individual silicon carbide fibers in this sample about 500 microns in diameter. LBNL senior materials scientist and U.C. Berkeley professor Rob Ritchie has been researching the fracture behavior of a wide array of materials for the past 40 years, the last ten of them using the facilities at the ALS. From human bone to synthetic engineering materials such as shape-memory metals

11

High performance Zintl phase TE materials with embedded nanoparticles...  

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

performance Zintl phase TE materials with embedded nanoparticles High performance Zintl phase TE materials with embedded nanoparticles Performance of zintl phase thermoelectric...

12

COMPARATIVE ASSESSMENT OF MATERIAL PERFORMANCE IN DEMO  

E-Print Network [OSTI]

for sufficient time. Reliable estimates of component lifetimes are an important part of power plant design The basic DEMO design used in the present study is a 1.8 GW device (2.2 GW total thermal power ­ including simulation models and capabilities to assess material performance under the neutron irradiation conditions

13

Performance of scintillation materials at cryogenic temperatures  

E-Print Network [OSTI]

An increasing number of applications of scintillators at low temperatures, particularly in cryogenic experiments searching for rare events, has motivated the investigation of scintillation properties of materials over a wide temperature range. This paper provides an overview of the latest results on the study of luminescence, absorption and scintillation properties of materials selected for rare event searches so far. These include CaWO4, ZnWO4, CdWO4, MgWO4, CaMoO4, CdMoO4, Bi4Ge3O12, CaF2, MgF2, ZnSe and AL2O3-Ti. We discuss the progress achieved in research and development of these scintillators, both in material preparation and in the understanding of scintillation mechanisms, as well as the underlying physics. To understand the origin of the performance limitation of self-activated scintillators we employed a semi-empirical model of conversion of high energy radiation into light and made appropriate provision for effects of temperature and energy transfer. We conclude that the low-temperature value of the light yield of some modern scintillators, namely CaWO4, CdWO4 and Bi4Ge3O12, is close to the theoretical limit. Finally, we discuss the advantages and limitations of different materials with emphasis on their application as cryogenic phonon-scintillation detectors (CPSD) in rare event search experiments.

V. B. Mikhailik; H. Kraus

2010-01-29T23:59:59.000Z

14

MATERIALS PERFORMANCE TARGETED THRUST FY 2004 PROJECTS  

SciTech Connect (OSTI)

The Yucca Mountain site was recommended by the President to be a geological repository for commercial spent nuclear fuel and high-level radioactive waste. The multi-barrier approach was adopted for assessing and predicting system behavior, including both natural barriers and engineered barriers. A major component of the long-term strategy for safe disposal of nuclear waste is first to completely isolate the radionuclides in waste packages for long times and then to greatly retard the egress and transport of radionuclides from penetrated packages. The goal of the Materials Performance Targeted Thrust program is to further enhance the understanding of the role of engineered barriers in waste isolation. In addition, the Thrust will explore technical enhancements and seek to offer improvements in materials costs and reliability.

DOE

2005-09-13T23:59:59.000Z

15

Integrated Performance Testing Workshop - Supplemental Materials (Scripts and Procedures)  

SciTech Connect (OSTI)

A variety of performance tests are described relating to: Material Transfers; Emergency Evacuation; Alarm Response Assessment; and an Enhanced Limited Scope Performance Test (ELSPT). Procedures are given for: nuclear material physical inventory and discrepancy; material transfers; and emergency evacuation.

Baum, Gregory A.

2014-02-01T23:59:59.000Z

16

Wall System Innovations: Familiar Materials, Better Performance  

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

1 1 Wall System Innovation Vladimir Kochkin Joseph Wiehagen April 2013 Wall Innovation Metrics  High R (thermal and air barrier)  High Performance  Durable, structural  Build-able  Low transition risk to builders  50% Building America Goal  ≈ R25+ (CZ 4 and higher) 2 Background  Technologies for high-R walls have been proposed and used for over 25 years  But real market penetration is very low  Often the last EE measure implemented by builders (e.g. E*) 3 Background  High-R wall solutions have not achieved a broad level of standardization and commonality  A large set of methods and materials entered the market  Multiple and conflicting details  Wall characteristics are more critical = RISK 4 New Home Starts -

17

Materials Performance in USC Steam Portland  

SciTech Connect (OSTI)

Goals of the U.S. Department of Energy's Advanced Power Systems Initiatives include power generation from coal at 60% efficiency, which requires steam conditions of up to 760 C and 340 atm, co-called advanced ultrasupercritical (A-USC) steam conditions. A limitation to achieving the goal is a lack of cost-effective metallic materials that can perform at these temperatures and pressures. Some of the more important performance limitations are high-temperature creep strength, fire-side corrosion resistance, and steam-side oxidation resistance. Nickel-base superalloys are expected to be the materials best suited for steam boiler and turbine applications above about 675 C. Specific alloys of interest include Haynes 230 and 282, Inconel 617, 625 and 740, and Nimonic 263. Further validation of a previously developed chromia evaporation model is shown by examining the reactive evaporation effects resulting from exposure of Haynes 230 and Haynes 282 to moist air environments as a function of flow rate and water content. These two alloys differ in Ti and Mn contents, which may form outer layers of TiO{sub 2} or Cr-Mn spinels. This would in theory decrease the evaporation of Cr{sub 2}O{sub 3} from the scale by decreasing the activity of chromia at the scale surface, and be somewhat self-correcting as chromia evaporation concentrates the Ti and Mn phases. The apparent approximate chromia activity was found for each condition and alloy that showed chromia evaporation kinetics. As expected, it was found that increasing the gas flow rate led to increased chromia evaporation and decreased chromia activity. However, increasing the water content in moist air increased the evaporation, but results were mixed with its effect on chromia activity.

G.R. Holcomb; J. Tylczak; R. Hu

2011-04-26T23:59:59.000Z

18

Impact of fluorine based reactive chemistry on structure and properties of high moment magnetic material  

SciTech Connect (OSTI)

The impact of the fluorine-based reactive ion etch (RIE) process on the structural, electrical, and magnetic properties of NiFe and CoNiFe-plated materials was investigated. Several techniques, including X-ray fluorescence, 4-point-probe, BH looper, transmission electron microscopy (TEM), and electron energy loss spectroscopy (EELS), were utilized to characterize both bulk film properties such as thickness, average composition, Rs, ?, Bs, Ms, and surface magnetic dead layers' properties such as thickness and element concentration. Experimental data showed that the majority of Rs and Bs changes of these bulk films were due to thickness reduction during exposure to the RIE process. ? and Ms change after taking thickness reduction into account were negligible. The composition of the bulk films, which were not sensitive to surface magnetic dead layers with nano-meter scale, showed minimum change as well. It was found by TEM and EELS analysis that although both before and after RIE there were magnetic dead layers on the top surface of these materials, the thickness and element concentration of the layers were quite different. Prior to RIE, dead layer was actually native oxidation layers (about 2?nm thick), while after RIE dead layer consisted of two sub-layers that were about 6?nm thick in total. Sub-layer on the top was native oxidation layer, while the bottom layer was RIE damaged layer with very high fluorine concentration. Two in-situ RIE approaches were also proposed and tested to remove such damaged sub-layers.

Yang, Xiaoyu, E-mail: xiaoyu.yang@wdc.com; Chen, Lifan; Han, Hongmei; Fu, Lianfeng; Sun, Ming; Liu, Feng; Zhang, Jinqiu [Western Digital Corporation, 44100 Osgood Road, Fremont, California 94539 (United States)

2014-05-07T23:59:59.000Z

19

Waste Package Materials Performance Peer Review | Department of Energy  

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

Waste Package Materials Performance Peer Review Waste Package Materials Performance Peer Review Waste Package Materials Performance Peer Review A consensus peer review of the current technical basis and the planned experimental and modeling program for the prediction of the long-term performance of waste package materials being considered for use in a proposed repository at Yucca Mountain, Nevada. Waste Package Materials Performance Peer Review A Compilation of Special Topic Reports Wastepackagematerials_PPRP_final.pdf Evaluation of the Final Report: Waste Package Materials Performance Peer Review Panel Multi-Purpose_Canister_System_Evaluation.pdf More Documents & Publications Preliminary Report on Dual-Purpose Canister Disposal Alternatives (FY13) A Review of Stress Corrosion Cracking/Fatigue Modeling for Light Water

20

Achieving Transformational Materials Performance in a New Era of Science  

ScienceCinema (OSTI)

The inability of current materials to meet performance requirements is a key stumbling block for addressing grand challenges in energy and national security. Fortunately, materials research is on the brink of a new era - a transition from observation and validation of materials properties to prediction and control of materials performance. In this talk, I describe the nature of the current challenge, the prospects for success, and a specific facility concept, MaRIE, that will provide the needed capabilities to meet these challenges, especially for materials in extreme environments. MaRIE, for Matter-Radiation Interactions in Extremes, is Los Alamos' concept to realize this vision of 21st century materials research. This vision will be realized through enhancements to the current LANSCE accelerator, development of a fourth-generation x-ray light source co-located with the proton accelerator, and a comprehensive synthesis and characterization facility focused on controlling complex materials and the defect/structure link to materials performance.

John Sarrao

2010-01-08T23:59:59.000Z

Note: This page contains sample records for the topic "momentive performance materials" 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

Efficient materialization of dynamic web data to improve web performance  

Science Journals Connector (OSTI)

The issues of performance, response efficiency and data consistency are among the most important ones for data intensive Web sites on the Internet today. In order to deal with these issues we analyze and evaluate a materialization policy that may be ...

Christos Bouras; Agisilaos Konidaris

2002-08-01T23:59:59.000Z

22

Decoupling Interrelated Parameters for Designing High Performance Thermoelectric Materials  

Science Journals Connector (OSTI)

Decoupling Interrelated Parameters for Designing High Performance Thermoelectric Materials ... Solution Processed Cu2CoSnS4 Thin Films for Photovoltaic Applications ... Earth abundant alternative chalcopyrite Cu2CoSnS4 (CCTS) thin films were deposited by a facile solgel process onto larger substrates. ...

Chong Xiao; Zhou Li; Kun Li; Pengcheng Huang; Yi Xie

2014-02-11T23:59:59.000Z

23

High Performance Abrasion-Resistant Materials: Lessons from Nature  

E-Print Network [OSTI]

Basics of abrasion resistance materials The progressive lossachieve abrasion resistance, materials need to posses highresistance materials

Wang, Qianqian

2012-01-01T23:59:59.000Z

24

Key Elements of and Materials Performance Targets for Highly Insulating  

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

Key Elements of and Materials Performance Targets for Highly Insulating Key Elements of and Materials Performance Targets for Highly Insulating Window Frames Title Key Elements of and Materials Performance Targets for Highly Insulating Window Frames Publication Type Journal Article LBNL Report Number LBNL-5099E Year of Publication 2011 Authors Gustavsen, Arlid, Steinar Grynning, Dariush K. Arasteh, Bjørn Petter Jelle, and Howdy Goudey Journal Energy and Buildings Volume 43 Issue 10 Pagination 2583-2594 Date Published 10/2011 Keywords Fenestration, heat transfer modeling, thermal performance, thermal transmittance, u-factor, window frames Abstract The thermal performance of windows is important for energy efficient buildings. Windows typically account for about 30-50 percent of the transmission losses though the building envelope, even if their area fraction of the envelope is far less. The reason for this can be found by comparing the thermal transmittance (U-factor) of windows to the U-factor of their opaque counterparts (wall, roof and floor constructions). In well insulated buildings the U-factor of walls, roofs an floors can be between 0.1-0.2 W/(m2K). The best windows have U-values of about 0.7-1.0. It is therefore obvious that the U-factor of windows needs to be reduced, even though looking at the whole energy balance for windows (i.e. solar gains minus transmission losses) makes the picture more complex.

25

Functionalized Materials From Elastomers to High Performance Thermoplastics  

SciTech Connect (OSTI)

Synthesis and incorporation of functionalized materials continues to generate significant research interest in academia and in industry. If chosen correctly, a functional group when incorporated into a polymer can deliver enhanced properties, such as adhesion, water solubility, thermal stability, etc. The utility of these new materials has been demonstrated in drug-delivery systems, coatings, membranes and compatibilizers. Two approaches exist to functionalize a material. The desired moiety can be added to the monomer either before or after polymerization. The polymers used range from low glass transition temperature elastomers to high glass transition temperature, high performance materials. One industrial example of the first approach is the synthesis of Teflon(reg. sign). Poly(tetrafluoroethylene) (PTFE or Teflon(reg. sign)) is synthesized from tetrafluoroethylene, a functionalized monomer. The resulting material has significant property differences from the parent, poly(ethylene). Due to the fluorine in the polymer, PTFE has excellent solvent and heat resistance, a low surface energy and a low coefficient of friction. This allows the material to be used in high temperature applications where the surface needs to be nonabrasive and nonstick. This material has a wide spread use in the cooking industry because it allows for ease of cooking and cleaning as a nonstick coating on cookware. One of the best examples of the second approach, functionalization after polymerization, is the vulcanization process used to make tires. Natural rubber (from the Hevea brasiliensis) has a very low glass transition temperature, is very tacky and would not be useful to make tires without synthetic alteration. Goodyear's invention was the vulcanization of polyisoprene by crosslinking the material with sulfur to create a rubber that was tough enough to withstand the elements of weather and road conditions. Due to the development of polymerization techniques to make cis-polyisoprene, natural rubber is no longer needed for the manufacturing of tires, but vulcanization is still utilized.

Laura Ann Salazar

2003-05-31T23:59:59.000Z

26

EVALUATION OF THE FINAL REPORT: WASTE PACKAGE MATERIALS PERFORMANCE PEER  

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

EVALUATION OF THE FINAL REPORT: WASTE EVALUATION OF THE FINAL REPORT: WASTE PACKAGE MATERIALS PERFORMANCE PEER REVIEW PANEL B00000000-01717-5700-00005 REV 00 August 2002 This document is not an official copy and is for informational purposes only. QA: QA B00000000-01717-5700-00005 REV 00 August 2002 Evaluation of the Final Report: Waste Package Materials Performance Peer Review Panel Prepared by: Jack N. Bailey, Jack D. Cloud, Thomas E. Rodgers, and Tammy S.E. Summers Prepared for: U.S. Department of Energy Yucca Mountain Site Characterization Office P.O. Box 364629 North Las Vegas, Nevada 89036-8629 Prepared by: Bechtel SAIC Company, LLC 1180 Town Center Drive Las Vegas, Nevada 89144 Under Contract Number DE-AC28-01RW12101 Disclaimer Signature Page Change History Acknowledgments

27

Corrosion performance of ceramic materials in slagging environments  

SciTech Connect (OSTI)

Conceptual designs of advanced combustion systems that use coal as feedstock require high-temperature furnaces and heat transfer surfaces that can operate at temperatures much higher than in current coal-fired power plants. Combination of elevated temperatures and hostile combustion environments requires advanced ceramics. Objectives of this program are to evaluate the (a) chemistry of gaseous and condensed products arising during coal combustion, (b) corrosion behavior of candidate materials in air, slag, and salt environments, and (c)residual mechanical properties of the materials after corrosion. Temperatures in the range of 1000-1400 C for ceramics and 600-1000 C for metallic alloys are emphasized. Coal/ash chemistries developed on the basis of thermodynamic/kinetic calculations, together with slags from actual combustors, are used. Materials being evaluated include monolithic Si carbides from several sources: Si nitride, Si carbide in alumina composites, Si carbide fibers in a Si carbide-matrix composite, and some advanced Ni-base alloys. This paper presents results from an ongoing program on corrosion performance of candidate ceramic materials exposed to air, salt, and slag environments and their effect on flexural strength and energy absorbed during fracture of these materials. 10 figs, 4 tabs, 8 refs.

Natesan, K.

1996-10-01T23:59:59.000Z

28

Materials performance in fluidized-bed air heaters  

SciTech Connect (OSTI)

Development of cogeneration systems that involve combustion of coal in a fluidized bed and use of air heaters to generate hot air for turbine systems has been in progress for a number of years. The US Department of Energy (DOE) sponsored the Atmospheric Fluidized-Bed Cogeneration Air Heater Experiment (ACAHE) to assess the performance of various heat exchanger materials and establish confidence in the resultant designs of fluidized-bed-combustion air heater systems. Westinghouse Electric Corporation, in association with Babcock & Wilcox, Foster Wheeler, and ABB/Combustion Engineering, prepared specifications and hardware for the ACAHE. Argonne National Laboratory, through a contract with the Rocketdyne Division of Rockwell International, conducted tests in the DOE 1.8 {times} 1.8 m atmospheric fluidized-bed combustion facility in El Segundo, California. This paper presents an assessment of the materials performance in fluidized bed environments and examines guidelines for materials selection on the basis of corrosion resistance in air and in combustion environments, mechanical properties, fabricability/thermal stability, and cost.

Natesan, K.; Podolski, W.

1991-12-01T23:59:59.000Z

29

Materials performance in fluidized-bed air heaters  

SciTech Connect (OSTI)

Development of cogeneration systems that involve combustion of coal in a fluidized bed and use of air heaters to generate hot air for turbine systems has been in progress for a number of years. The US Department of Energy (DOE) sponsored the Atmospheric Fluidized-Bed Cogeneration Air Heater Experiment (ACAHE) to assess the performance of various heat exchanger materials and establish confidence in the resultant designs of fluidized-bed-combustion air heater systems. Westinghouse Electric Corporation, in association with Babcock Wilcox, Foster Wheeler, and ABB/Combustion Engineering, prepared specifications and hardware for the ACAHE. Argonne National Laboratory, through a contract with the Rocketdyne Division of Rockwell International, conducted tests in the DOE 1.8 {times} 1.8 m atmospheric fluidized-bed combustion facility in El Segundo, California. This paper presents an assessment of the materials performance in fluidized bed environments and examines guidelines for materials selection on the basis of corrosion resistance in air and in combustion environments, mechanical properties, fabricability/thermal stability, and cost.

Natesan, K.; Podolski, W.

1991-12-01T23:59:59.000Z

30

High performance capacitors using nano-structure multilayer materials fabrication  

DOE Patents [OSTI]

A high performance capacitor is fabricated from nano-structure multilayer materials, such as by controlled, reactive sputtering, and having very high energy-density, high specific energy and high voltage breakdown. The multilayer capacitors, for example, may be fabricated in a ``notepad`` configuration composed of 200-300 alternating layers of conductive and dielectric materials so as to have a thickness of 1 mm, width of 200 mm, and length of 300 mm, with terminals at each end of the layers suitable for brazing, thereby guaranteeing low contact resistance and high durability. The notepad capacitors may be stacked in single or multiple rows (series-parallel banks) to increase the voltage and energy density. 5 figs.

Barbee, T.W. Jr.; Johnson, G.W.; O`Brien, D.W.

1995-05-09T23:59:59.000Z

31

High performance capacitors using nano-structure multilayer materials fabrication  

DOE Patents [OSTI]

A high performance capacitor fabricated from nano-structure multilayer materials, such as by controlled, reactive sputtering, and having very high energy-density, high specific energy and high voltage breakdown. The multilayer capacitors, for example, may be fabricated in a "notepad" configuration composed of 200-300 alternating layers of conductive and dielectric materials so as to have a thickness of 1 mm, width of 200 mm, and length of 300 mm, with terminals at each end of the layers suitable for brazing, thereby guaranteeing low contact resistance and high durability. The "notepad" capacitors may be stacked in single or multiple rows (series-parallel banks) to increase the voltage and energy density.

Barbee, Jr., Troy W. (Palo Alto, CA); Johnson, Gary W. (Livermore, CA); O'Brien, Dennis W. (Livermore, CA)

1995-01-01T23:59:59.000Z

32

High performance capacitors using nano-structure multilayer materials fabrication  

DOE Patents [OSTI]

A high performance capacitor is described which is fabricated from nano-structure multilayer materials, such as by controlled, reactive sputtering, and having very high energy-density, high specific energy and high voltage breakdown. The multilayer capacitors, for example, may be fabricated in a ``notepad`` configuration composed of 200--300 alternating layers of conductive and dielectric materials so as to have a thickness of 1 mm, width of 200 mm, and length of 300 mm, with terminals at each end of the layers suitable for brazing, thereby guaranteeing low contact resistance and high durability. The ``notepad`` capacitors may be stacked in single or multiple rows (series-parallel banks) to increase the voltage and energy density. 5 figs.

Barbee, T.W. Jr.; Johnson, G.W.; O`Brien, D.W.

1996-01-23T23:59:59.000Z

33

High performance capacitors using nano-structure multilayer materials fabrication  

DOE Patents [OSTI]

A high performance capacitor fabricated from nano-structure multilayer materials, such as by controlled, reactive sputtering, and having very high energy-density, high specific energy and high voltage breakdown. The multilayer capacitors, for example, may be fabricated in a "notepad" configuration composed of 200-300 alternating layers of conductive and dielectric materials so as to have a thickness of 1 mm, width of 200 mm, and length of 300 mm, with terminals at each end of the layers suitable for brazing, thereby guaranteeing low contact resistance and high durability. The "notepad" capacitors may be stacked in single or multiple rows (series-parallel banks) to increase the voltage and energy density.

Barbee, Jr., Troy W. (Palo Alto, CA); Johnson, Gary W. (Livermore, CA); O'Brien, Dennis W. (Livermore, CA)

1996-01-01T23:59:59.000Z

34

Electron Transport Materials: Synthesis, Properties and Device Performance  

SciTech Connect (OSTI)

We report the design, synthesis and characterization, thermal and photophysical properties of two silane based electron transport materials, dibenzo[b,d]thiophen-2-yltriphenylsilane (Si{phi}87) and (dibenzo[b,d]thiophen-2-yl)diphenylsilane (Si{phi}88) and their performance in blue organic light emitting devices (OLEDs). The utility of these materials in blue OLEDs with iridium (III) bis[(4,6-difluorophenyl)-pyridinato-N,C']picolinate (Firpic) as the phosphorescent emitter was demonstrated. Using the silane Si{phi}87 as the electron transport material (ETm) an EQE of 18.2% was obtained, with a power efficiency of 24.3 lm/W (5.8V at 1mA/cm{sup 2}), in a heterostructure. When Si{phi}88 is used, the EQE is 18.5% with a power efficiency of 26.0 lm/W (5.5V at 1mA/cm{sup 2}).

Cosimbescu, Lelia; Wang, Liang; Helm, Monte L.; Polikarpov, Evgueni; Swensen, James S.; Padmaperuma, Asanga B.

2012-06-01T23:59:59.000Z

35

New MEA Materials for Improved DMFC Performance, Durability and Cost  

SciTech Connect (OSTI)

Abstract Project Title: New MEA Materials for Improved DMFC Performance, Durability and Cost The University of North Florida (UNF)--with project partners the University of Florida, Northeastern University, and Johnson Matthey--has recently completed the Department of Energy (DOE) project entitled New MEA Materials for Improved DMFC Performance, Durability and Cost. The primary objective of the project was to advance portable fuel cell MEA technology towards the commercial targets as laid out in the DOE R&D roadmap by developing a passive water recovery MEA (membrane electrode assembly). Developers at the University of North Florida identified water management components as an insurmountable barrier to achieving the required system size and weight necessary to achieve the energy density requirements of small portable power applications. UNF developed an innovative passive water recovery MEA for direct methanol fuel cells (DMFC) which provides a path to system simplification and optimization. The passive water recovery MEA incorporates a hydrophobic, porous, barrier layer within the cathode electrode, so that capillary pressure forces the water produced at the cathode through holes in the membrane and back to the anode. By directly transferring the water from the cathode to the anode, the balance of plant is very much simplified and the need for heavy, bulky water recovery components is eliminated. At the heart of the passive water recovery MEA is the UNF DM-1 membrane that utilizes a hydrocarbon structure to optimize performance in a DMFC system. The membrane has inherent performance advantages, such as a low methanol crossover (high overall efficiency), while maintaining a high proton conductivity (good electrochemical efficiency) when compared to perfluorinated sulfonic acid membranes such as Nafion. Critically, the membrane provides an extremely low electro-osmotic drag coefficient of approximately one water molecule per proton (versus the 2-3 for Nafion) that minimizes flooding issues at the cathode, which often fatally limit open cathode MEA performance. During this successfully completed DOE program the project team met all of the project goals. The team built and tested over 1,500 MEAs with a wide range of different manufacturing chemistries and process conditions. This project demonstrated that the UNF MEA design could be fabricated with a high degree of reproducibility and repeatability. Some specific achievements include: Durability - The UNF MEA has demonstrated over 11,000 hours continuous operation in a short stack configuration. The root cause of an off-state degradation issue was successfully mitigated by modifying the manufacturing process by changing the wetting agents used in the catalyst printing. The stability of the anode electrode was increased by replacing the anode electrodes with a stabilized PtRu/C catalyst. The overall degradation rate was significantly reduced through optimization of the MEA operating conditions. Performance - The project team optimized the performance of the critical MEA sub-components. By increasing the membrane thickness, the methanol crossover was reduced, thereby increasing the fuel utilization efficiency without sacrificing any electrochemical performance. The reduction in methanol crossover increased the fuel utilization efficiency from 78% to over 90%. The liquid barrier layer was optimized to provide improved reproducibility, thereby improving stack voltage uniformity and reliability. Additionally the barrier layer water permeability was lowered without sacrificing any power density, thereby enabling increased operating temperature. Improvements in the cathode catalyst selection and coating provided an additional 10% to 20% improvement in the MEA performance at the target operating range. Cost - Commercially scalable processes were developed for all of the critical MEA components which led to improved yields and lower overall manufacturing costs. Furthermore, significant steps have been made in improving the process control, which increases MEA

Fletcher, James H. [University of North Florida; Campbell, Joseph L. [University of North Florida; Cox, Philip [University of North Florida; Harrington, William J. [University of North Florida

2013-09-16T23:59:59.000Z

36

FINAL REPORT WASTE PACKAGE MATERIALS PERFORMANCE PEER REVIEW PANEL  

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

REPORT REPORT WASTE PACKAGE MATERIALS PERFORMANCE PEER REVIEW PANEL FEBRUARY 28, 2002 This document is not an official copy and is for informational purposes only. Signature Page Preface Executive Summary TABLE OF CONTENTS 1. INTRODUCTION 1.1 Organization of the Peer Review 1.2 Objectives of the Review 1.3 Content of the Final Report 2. MAIN FINDINGS 2.1 Perspective 2.2 Overall Findings 2.3 Corrosion Degradation Modes 2.4 Higher or Lower Temperature Operating Modes 2.5 Long-Term Uniform Corrosion of Passive Metal 2.6 Alloy Specification and Comparison 2.7 Technical Issues to be Resolved 2.8 Organizational-Managerial Issues 3. SUMMARY OF DEGRADATION MODES AND CONTRIBUTING FACTORS 3.1 Introduction 3.2 Repository Conditions: Overview of Time, Temperature, Environment

37

THERMAL PERFORMANCE OF RADIOACTIVE MATERIAL PACKAGES IN TRANSPORT CONFIGURATION  

SciTech Connect (OSTI)

Drum type packages are routinely used to transport radioactive material (RAM) in the U.S. Department of Energy (DOE) complex. These packages are designed to meet the federal regulations described in 10 CFR Part 71. The packages are transported in specially designed vehicles like Safe Secure Transport (SST) for safety and security. In the transport vehicles, the packages are placed close to each other to maximize the number of units in the vehicle. Since the RAM contents in the packagings produce decay heat, it is important that they are spaced sufficiently apart to prevent overheating of the containment vessel (CV) seals and the impact limiter to ensure the structural integrity of the package. This paper presents a simple methodology to assess thermal performance of a typical 9975 packaging in a transport configuration.

Gupta, N.

2010-03-04T23:59:59.000Z

38

Development of improved performance refractory liner materials for slagging gasifiers  

SciTech Connect (OSTI)

Refractory liners for slagging gasifiers used in power generation, chemical production, or as a possible future source of hydrogen for a hydrogen based economy, suffer from a short service life. These liner materials are made of high Cr2O3 and lower levels of Al2O3 and/or ZrO2. As a working face lining in the gasifier, refractories are exposed to molten slags at elevated temperature that originate from ash in the carbon feedstock, including coal and/or petroleum coke. The molten slag causes refractory failure by corrosion dissolution and by spalling. The Albany Research Center is working to improve the performance of Cr2O3 refractories and to develop refractories without Cr2O3 or with Cr2O3 content under 30 wt pct. Research on high Cr2O3 materials has resulted in an improved refractory with phosphate additions that is undergoing field testing. Results to date of field trials, along with research direction on refractories with no or low Cr2O3, will be discussed.

Kwong, Kyei-Sing; Bennett, James P.; Powell, Cynthia; Thomas, Hugh; Krabbe, Rick

2005-01-01T23:59:59.000Z

39

Enhanced performance of graphite anode materials by AlF3 coating...  

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

performance of graphite anode materials by AlF3 coating for lithium-ion batteries. Enhanced performance of graphite anode materials by AlF3 coating for lithium-ion batteries....

40

Performance of Thermal Insulation Containing Microencapsulated Phase Change Material  

SciTech Connect (OSTI)

The objective of this study is dynamic thermal performance microencapsulated phase change material (PCM) blended with loose-fill cellulose insulation. Dynamic hot-box testing and heat-flux measurements have been made for loose-fill cellulose insulation with and without uniformly distributed microencapsulated PCM. The heat flux measurements were made with a heat-flow-meter (HFM) apparatus built in accordance with ASTM C 518. Data were obtained for 1.6 lb{sub m}/ft{sup 3} cellulose insulation containing 0 to 40 wt% PCM. Heat-flux data resulting from a rapid increase in the temperature on one side of a test specimen initially at uniform temperature were analyzed to access the effect of PCM on total heat flow. The heat flux was affected by the PCM for about 100 minutes after the temperature increase. The total heat flow during this initial period decreased linearly with PCM content from 6.5 Btu/ft{sup 2} at 0% PCM to 0.89 Btu/ft{sup 2} for 40 wt% PCM. The cellulose insulation with PCM discharged heat faster than the untreated cellulose when the hot-side temperature of the test specimen was reduced. In addition, hot-box apparatus built in accordance with ASTM C 1363 was utilized for dynamic hot-box testing of a wood stud wall assembly containing PCM-enhanced cellulose insulation. Experimental data obtained for wood-frame wall cavities containing cellulose insulation with PCM was compared with results obtained from cavities containing only cellulose insulation.

Kosny, Jan [ORNL] [ORNL; Yarbrough, David [R & D Services] [R & D Services; Syed, Azam M [ORNL] [ORNL

2007-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "momentive performance materials" 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

Performance of MHD insulating materials in a potassium environment  

SciTech Connect (OSTI)

The objectives of this study are to evaluate the compatibility of the MHD insulating materials boron nitride and silicon nitride in a potassium environment at temperatures of 1000 and 1400{degrees}F (538 and 760{degrees}C, respectively) and to measure the electrical conductivities of the specimens before and after exposure to potassium. Based on the test results, an assessment is to be made of the suitability of these materials for application as insulator materials in an MHD channel.

Natesan, K.; Park, J.H.; Rink, D.L. (Argonne National Lab., IL (United States)); Thomas, C.A. (USDOE Pittsburgh Energy Technology Center, PA (United States))

1991-12-01T23:59:59.000Z

42

High Performance Zintl Phase TE Materials with Embedded Particles...  

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

TE Materials with Embedded Particles Presents results from embedding nanoparticles in magnesium silicide alloy matrix reducing thermal conductivity by phonon scattering and...

43

Predicting the Performance of Edge Seal Materials for PV (Presentation)  

SciTech Connect (OSTI)

Edge seal materials were evaluated using a 100-nm film of Ca deposited on glass and laminated to another glass substrate. As moisture penetrates the package it converts the Ca metal to transparent CaOH2 giving a clear indication of the depth to which moisture has entered. Using this method, we have exposed test samples to a variety of temperature and humidity conditions ranging from 45C and 10% RH up to 85C and 85% RH, to ultraviolet radiation and to mechanical stress. We are able to show that edge seal materials are capable of keeping moisture away from sensitive cell materials for the life of a module.

Kempe, M.; Panchagade, D.; Dameron, A.; Reese, M.

2012-03-01T23:59:59.000Z

44

Controlling Performance of Laminated Composites Using Piezoelectric Materials  

E-Print Network [OSTI]

Composite materials are increasingly used in aerospace, underwater, and automotive structures. Their use in structural applications is dictated by the outstanding strength and stiffness while being lightweight in addition to their flexibility...

Hasan, Zeaid

2012-02-14T23:59:59.000Z

45

Selection and performance of Materials for Biomass Gasifiers  

SciTech Connect (OSTI)

Production of syngas through gasification or pyrolysis offers one of the more efficient routes for utilization of biomass resources; however, the containment structures used for many of these thermochemical processes are exposed to severe environments that limit their longevity and reliability. Studies have been conducted for three of these systems, and superior alternative materials have been identified. Improved materials will be of even greater importance in proposed gasification systems, many of which will generate even more extreme operating conditions.

Keiser, James R [ORNL] [ORNL; Hemrick, James Gordon [ORNL] [ORNL; Meisner, Roberta A [University of Tennessee, Knoxville (UTK) & Oak Ridge National Laboratory (ORNL)] [University of Tennessee, Knoxville (UTK) & Oak Ridge National Laboratory (ORNL); Blau, Peter J [Oak Ridge National Laboratory (ORNL)] [Oak Ridge National Laboratory (ORNL); Pint, Bruce A [ORNL] [ORNL

2010-01-01T23:59:59.000Z

46

Materials Chemistry and Performance of Silicone-Based Replicating Compounds.  

SciTech Connect (OSTI)

Replicating compounds are used to cast reproductions of surface features on a variety of materials. Replicas allow for quantitative measurements and recordkeeping on parts that may otherwise be difficult to measure or maintain. In this study, the chemistry and replicating capability of several replicating compounds was investigated. Additionally, the residue remaining on material surfaces upon removal of replicas was quantified. Cleaning practices were tested for several different replicating compounds. For all replicating compounds investigated, a thin silicone residue was left by the replica. For some compounds, additional inorganic species could be identified in the residue. Simple solvent cleaning could remove some residue.

Brumbach, Michael T.; Mirabal, Alex James; Kalan, Michael; Trujillo, Ana B; Hale, Kevin

2014-11-01T23:59:59.000Z

47

Corrosion performance of materials for advanced combustion systems  

SciTech Connect (OSTI)

Conceptual designs of advanced combustion systems that utilize coal as a feedstock require high-temperature furnaces and heat transfer surfaces capable of operating at much higher temperatures than those in current coal-fired power plants. The combination of elevated temperatures and hostile combustion environments requires development and application of advanced ceramic materials for heat exchangers in these designs. This paper characterizes the chemistry of coal-fired combustion environments over the wide temperature range of interest in these systems and discusses some of the experimental results for several materials obtained from laboratory tests and from exposures in a pilot-scale facility.

Natesan, K. [Argonne National Lab., IL (United States); Freeman, M.; Mathur, M. [Pittsburgh Energy Technology Center, PA (United States)

1995-05-01T23:59:59.000Z

48

Accident Performance of Light Water Reactor Cladding Materials  

SciTech Connect (OSTI)

During a loss of coolant accident as experienced at Fukushima, inadequate cooling of the reactor core forces component temperatures ever higher where they must withstand aggressive chemical environments. Conventional zirconium cladding alloys will readily oxidize in the presence of water vapor at elevated temperatures, rapidly degrading and likely failing. A cladding breach removes the critical barrier between actinides and fission products and the coolant, greatly increasing the probability of the release of radioactivity in the event of a containment failure. These factors have driven renewed international interest in both study and improvement of the materials used in commercial light water reactors. Characterization of a candidate cladding alloy or oxidation mitigation technique requires understanding of both the oxidation kinetics and hydrogen production as a function of temperature and atmosphere conditions. Researchers in the MST division supported by the DOE-NE Fuel Cycle Research and Development program are working to evaluate and quantify these parameters across a wide range of proposed cladding materials. The primary instrument employed is a simultaneous thermal analyzer (STA) equipped with a specialized water vapor furnace capable of maintaining temperatures above 1200 C in a range of atmospheres and water vapor contents. The STA utilizes thermogravimetric analysis and a coupled mass spectrometer to measure in situ oxidation and hydrogen production of candidate materials. This capability is unprecedented in study of materials under consideration for reactor cladding use, and is currently being expanded to investigate proposed coating techniques as well as the effect of coating defects on corrosion resistance.

Nelson, Andrew T. [Los Alamos National Laboratory

2012-07-24T23:59:59.000Z

49

Irradiation test of electrical insulation materials performed at  

E-Print Network [OSTI]

as possible · The insulation material penetration by the beam should be as large as possible #12;Beam energy required for the sample irradiation Depth of bean penetration in water for various beam energy value H20. Wronka, Soltan Inst. #12;Dose rate in function of distance form the accelerator gun for 6 MeV structure 6

McDonald, Kirk

50

Energetic nano-materials: Opportunities for enhanced performances  

Science Journals Connector (OSTI)

This paper deals with the contribution of nano-materials to the contemporary pyrotechnics science. The breakthroughs in this domain are illustrated by several examples of energetic nano-materials recently studied in our laboratory. The solidification of energetic phases in a porous matrix (Cr2O3) was used to prepare and to stabilize at nano-scale explosive particles. The thermo-chemical behaviour of RDX nano-particles strongly differs from the one of micron-sized RDX. For instance, the temperature at which the decomposition occurs is significantly lowered and the melting point is removed. The effect of the decomposition of RDX nano-particles on the matrix in which they are trapped was observed for the first time by the atomic force microscopy. The Cr2O3/RDX nano-composite materials were mixed with aluminium nano-particles in order to formulate gas-generating nano-thermites (GGNT). The combustion of GGNT involves a synergy mechanism in which the decomposition of RDX nano-particles fragments the Cr2O3 matrix and primes the thermite reaction. Classical nano-thermites were obtained by mixing nano-particles (diameter <100nm) of metallic oxides (WO3) with a reducing metal (Al). These materials were used to demonstrate that nano-particles (i) significantly lower the ignition delay time and (ii) remarkably increase the combustion rate. Finally, pure RDX nano-particles are prepared by a continuous process of crystallization.

Denis Spitzer; Marc Comet; Christian Baras; Vincent Pichot; Nelly Piazzon

2010-01-01T23:59:59.000Z

51

Marine Bio-Nanotechnology: High-Performance Materials from Sponge Silicatein  

E-Print Network [OSTI]

Title: Marine Bio-Nanotechnology: High-Performance MaterialsChemical Biology (2005); Nanotechnology Review (2005, 2006);Marine biotechnology; nanotechnology; sponge; silica;

Morse, Daniel E.

2007-01-01T23:59:59.000Z

52

Alternative High-Performance Motors with Non-Rare Earth Materials...  

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

Alternative High-Performance Motors with Non-Rare Earth Materials 2012 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer...

53

Corrosion performance of materials for advanced combustion systems  

SciTech Connect (OSTI)

Conceptual designs of advanced combustion systems that utilize coal as a feedstock require high-temperature furnaces and heat transfer surfaces capable of operating at more elevated temperatures than those prevalent in current coal-fired power plants. The combination of elevated temperatures and hostile combustion environments necessitates development/application of advanced ceramic materials in these designs. This report characterizes the chemistry of coal-fired combustion environments over the wide temperature range that is of interest in these systems and discusses preliminary experimental results on several materials (alumina, Hexoloy, SiC/SiC, SiC/Si{sub 3}N{sub 4}/Si{sub 3}N{sub 4}, ZIRCONIA, INCONEL 677 and 617) with potential for application in these systems.

Natesan, K.; Yanez-Herrero, M.; Fornasieri, C.

1993-12-01T23:59:59.000Z

54

Prospects for accelerated development of high performance structural materials Steven J. Zinkle a,  

E-Print Network [OSTI]

in the operational per- formance and radiation resistance of structural materials during the past few decadesProspects for accelerated development of high performance structural materials Steven J. Zinkle a for fission and fusion energy applica- tions, by linking material fabrication to thermo-mechanical properties

Ghoniem, Nasr M.

55

Nuclear Magnetic Moments  

Science Journals Connector (OSTI)

This paper contains approximate formulas (Eqs. (5) and (6) for the calculation of nuclear magnetic moments from observed hyperfine structure separations.

S. Goudsmit

1933-04-15T23:59:59.000Z

56

Moments of Absorption.  

E-Print Network [OSTI]

??Moments of Absorption explores the conceptual and visual themes that are presented in my MFA thesis exhibition. The research looks into the absorption of the (more)

Kaufman, Sarah K.

2008-01-01T23:59:59.000Z

57

Studies of Perovskite Materials for High-Performance Storage Media, Piezoelectric, and Solar Energy Conversion Devices  

E-Print Network [OSTI]

Studies of Perovskite Materials for High-Performance Storage Media, Piezoelectric, and Solar Energy of applications, such as sensing, data storage, and energy conversion. For example, perovskite solid solutions

Rappe, Andrew M.

58

High-Performance Thermoelectric Devices Based on Abundant Silicide Materials for Vehicle Waste Heat Recovery  

Broader source: Energy.gov [DOE]

Development of high-performance thermoelectric devices for vehicle waste heat recovery will include fundamental research to use abundant promising low-cost thermoelectric materials, thermal management and interfaces design, and metrology

59

Experimental study to determine basic performance characteristics of recycled glass as beach nourishment material  

E-Print Network [OSTI]

Since significant amounts of recycled glass may be used as a substitute of materials for beach nourishment in urban beaches, laboratory experiments were proposed to understand the performance characteristics of glass versus natural sand. A first...

Cruz Castro, Oscar

2003-01-01T23:59:59.000Z

60

Streched Magnetic Moments  

E-Print Network [OSTI]

We note that for a system of 2 nucleons in a stretched case (J=J1+J2) the magnetic moment of the combined system is the sum of the magnetic moments of the 2 constituents. We compile other simple formulas.

Larry Zamick; Yitzhak Sharon

2012-07-12T23:59:59.000Z

Note: This page contains sample records for the topic "momentive performance materials" 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

Nuclear anapole moments  

Science Journals Connector (OSTI)

Nuclear anapole moments are parity-odd, time-reversal-even E1 moments of the electromagnetic current operator. Although the existence of this moment was recognized theoretically soon after the discovery of parity nonconservation (PNC), its experimental isolation was achieved only recently, when a new level of precision was reached in a measurement of the hyperfine dependence of atomic PNC in 133Cs. An important anapole moment bound in 205Tl also exists. In this paper, we present the details of the first calculation of these anapole moments in the framework commonly used in other studies of hadronic PNC, a meson-exchange potential that includes long-range pion exchange and enough degrees of freedom to describe the five independent S-P amplitudes induced by short-range interactions. The resulting contributions of ?, ?, and ? exchange to the single-nucleon anapole moment, to parity admixtures in the nuclear ground state, and to PNC exchange currents are evaluated, using configuration-mixed shell-model wave functions. The experimental anapole moment constraints on the PNC meson-nucleon coupling constants are derived and compared with those from other tests of the hadronic weak interaction. While the bounds obtained from the anapole moment results are consistent with the broad reasonable ranges defined by theory, they are not in good agreement with the constraints from the other experiments. We explore possible explanations for the discrepancy and comment on the potential importance of new experiments.

W. C. Haxton; C.-P. Liu; M. J. Ramsey-Musolf

2002-03-29T23:59:59.000Z

62

Cathode Performance as a Function of Inactive Materials and Void Fractions  

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

Cathode Performance as a Function of Inactive Materials and Void Fractions Cathode Performance as a Function of Inactive Materials and Void Fractions Title Cathode Performance as a Function of Inactive Materials and Void Fractions Publication Type Journal Article Year of Publication 2010 Authors Zheng, Honghe, Gao Liu, Xiangyun Song, Paul L. Ridgway, Shidi Xun, and Vincent S. Battaglia Journal Journal of Electrochemical Society Abstract Li[Ni1/3Co1/3Mn1/3]O2 -based laminates of approximately the same loading and of varying levels of poly(vinylidene fluoride) (PVDF) binder and acetylene black (ratio held constant) were fabricated and calendered to different porosities, with the objective to investigate performance on a volume basis. The electronic conductivity of the laminates depends strongly on the inactive material content but not significantly on porosity. Electrochemical impedance spectroscopy studies found that charge-transfer resistance with calendering varied greatly with inactive material content. When the electrode contains low levels of inactive material (2% PVDF and 1.6% carbon), calendering significantly reduced the bulk resistance of the electrode. With high levels of inactive material (8% PVDF and 6.4% carbon), charge-transfer resistance increased with increased calendering. Above a certain level, depending on the overall composition, the inactive material reduces ionic transport to the active material surface. For a plug-in hybrid electric vehicle required to go 40 miles at an average rate of 20 miles/h with a 38 kW 10 s power-pulse capability, the cell chemistry studied is energy-limited. Therefore, based on the results of this study, the cathode should be compressed to 10% porosity with a minimal amount of inactive material

63

Developing standard performance testing procedures for material control and accounting components at a site  

SciTech Connect (OSTI)

The condition of a nuclear material control and accountability system (MC&A) and its individual components, as with any system combining technical elements and documentation, may be characterized through an aggregate of values for the various parameters that determine the system's ability to perform. The MC&A system's status may be functioning effectively, marginally or not functioning based on a summary of the values of the individual parameters. This work included a review of the following subsystems, MC&A and Detecting Material Losses, and their respective elements for the material control and accountability system: (a) Elements of the MC&A Subsystem - Information subsystem (Accountancy/Inventory), Measurement subsystem, Nuclear Material Access subsystem, including tamper-indicating device (TID) program, and Automated Information-gathering subsystem; (b) Elements for Detecting Nuclear Material Loses Subsystem - Inventory Differences, Shipper/receiver Differences, Confirmatory Measurements and differences with accounting data, and TID or Seal Violations. In order to detect the absence or loss of nuclear material there must be appropriate interactions among the elements and their respective subsystems from the list above. Additionally this work includes a review of regulatory requirements for the MC&A system component characteristics and criteria that support the evaluation of the performance of the listed components. The listed components had performance testing algorithms and procedures developed that took into consideration the regulatory criteria. The developed MC&A performance-testing procedures were the basis for a Guide for MC&A Performance Testing at the material balance areas (MBAs) of State Scientific Center of the Russian Federation - Institute for Physics and Power Engineering (SSC RF-IPPE).

Scherer, Carolynn P [Los Alamos National Laboratory; Bushlya, Anatoly V [ROSATOM, RUSSIA; Efimenko, Vladimir F [IPPE, RUSSIA; Ilyanstev, Anatoly [IPPE, RUSSIA; Regoushevsky, Victor I [IPPE, RUSSIA

2010-01-01T23:59:59.000Z

64

Resistance Spot Welding of Aluminum Alloy to Steel with Transition Material - From Process to Performance  

SciTech Connect (OSTI)

This paper summarizes work to date on resistance spot welding (RSW) of aluminum alloy to mild steel from process development to performance evaluation. A cold-rolled strip material is introduced as a transition material to aid the resistance welding process. The optimal welding parameters and electrode selections were established using a combination of experimental and analytical approaches. The mechanical behaviors of welded samples was evaluated using static and dynamic strength tests and cyclic fatigue tests. A statistical analysis was also performed to analyze the effect of different failure modes on the sample's peak load and energy absorption.

Sun, Xin; Stephens, Elizabeth V.; Khaleel, Mohammad A.; Shao, H; Kimchi, Menachem; Menachem Kimchi and Wanda Newman

2004-05-11T23:59:59.000Z

65

Materials performance in coal-fired fluidized-bed combustion environments  

SciTech Connect (OSTI)

Development of cogeneration systems that involve combustion of coal in a fluidized bed for the generation of electricity and process heat has been in progress for a number of years. This paper addresses some of the key components in these systems, materials requirements/performance, and areas where additional effort is needed to improve the viability of these concepts for electric power generation.

Natesan, K.

1993-07-01T23:59:59.000Z

66

Experimental and numerical evaluation of electromagnetic acoustic transducer performance on steel materials  

E-Print Network [OSTI]

Experimental and numerical evaluation of electromagnetic acoustic transducer performance on steel 2011 Keywords: Electromagnetic Acoustic Transducers Magnetostriction Lorentz force Steel a b s t r a c of the test object. A wide variety of steel materials is employed in many industrial applications, so

Nagy, Peter B.

67

Phase-change materials to improve solar panel's performance Pascal Biwole1,2,*  

E-Print Network [OSTI]

-change materials to improve solar panel's performance Pascal Biwole1,2,* , Pierre Eclache3 , Frederic Kuznik3 1-mail:phbiwole@unice.fr Abstract: High operating temperatures induce a loss of efficiency in solar photovoltaic and thermal panels set-up. Results show that adding a PCM on the back of a solar panel can maintain the panel

68

The effect of parent metal properties on the performance of Lattice Block Material{trademark}  

SciTech Connect (OSTI)

Lattice Block Material{trademark}, or LBM{trademark} is a unique lightweight structure consisting of repeated cells with an internal node connected to, in the most common configuration, 14 ligaments. In its metallic version, this product is available in a variety of castable metals including aluminum alloys, copper alloys, nickel alloys and steels. The relationship between LBM structural performance (strength and stiffness) and parent metal properties is investigated using compression tests in three primary orientations and 3-pt. bend tests. Analytical assessment of the LBM via finite element analysis shows reasonable agreement with experimental findings and provides predictions for LBM capabilities with different materials, unit cell sizes and ligament geometries.

Renauld, M.L.; Giamei, A.F.; Thompson, M.S. [United Technologies Research Center, East Hartford, CT (United States). Materials and Structures Technology Dept.; Priluck, J. [JAMCORP, Wilmington, MA (United States)

1998-12-31T23:59:59.000Z

69

Thermal Performance and Reliability Characterization of Bonded Interface Materials (BIMs): Preprint  

SciTech Connect (OSTI)

Thermal interface materials are an important enabler for low thermal resistance and reliable electronics packaging for a wide array of applications. There is a trend towards bonded interface materials (BIMs) because of their potential for low thermal resistivity (< 1 mm2K/W). However, BIMs induce thermomechanical stresses in the package and can be prone to failures and integrity risks. Deteriorated interfaces can result in high thermal resistance in the package and degradation and/or failure of the electronics. DARPA's Thermal Management Technologies program has addressed this challenge, supporting the development of mechanically-compliant, low resistivity nano-thermal interface (NTI) materials. In this work, we describe the testing procedure and report the results of NREL's thermal performance and reliability characterization of an initial sample of four different NTI-BIMs.

DeVoto, D.; Paret, P.; Mihalic, M.; Narumanchi, S.; Bar-Cohen, A.; Matin, K.

2014-08-01T23:59:59.000Z

70

Hydrogen Fuel Cell Performance in the Key Early Markets of Material Handling Equipment and Backup Power (Presentation)  

SciTech Connect (OSTI)

This presentation summarizes the results of NREL's analysis of hydrogen fuel cell performance in the key early markets of material handling equipment (MHE) and backup power.

Kurtz, J.; Sprik, S.; Ramsden, T.; Saur, G.; Ainscough, C.; Post, M.; Peters, M.

2013-10-01T23:59:59.000Z

71

Materials and Modules for Low Cost, High Performance Fuel Cell Humidifiers  

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

Kick-off Meeting, Kick-off Meeting, Wash. D.C - 10/01/2009 Materials and Modules for Low Cost, High Performance Fuel Cell Humidifiers Prime Contractor: W. L. Gore & Associates Elkton, MD Principal Investigator: William B. Johnson Sub-Contractor: dPoint Technologies Vancouver, BC W. L. Gore & Associates, Inc. DOE Kick-off Meeting, Wash. D.C - 10/01/2009 Ahluwalia, et. al, ibid. Mirza, Z. DOE Hydrogen Program Review, June 9-13, 2008; Washington, DC Background W. L. Gore & Associates, Inc. DOE Kick-off Meeting, Wash. D.C - 10/01/2009 Objective and Technical Barriers Addressed More efficient, low-cost humidifiers can increase fuel cell inlet humidity: Reduce system cost and size of balance of plant; Improve fuel cell performance; Improve fuel cell durability. OBJECTIVE: Demonstrate a durable, high performance water

72

Hierarchically Structured Ni3S2/Carbon Nanotube Composites as High Performance Cathode Materials for Asymmetric Supercapacitors  

Science Journals Connector (OSTI)

Hierarchically Structured Ni3S2/Carbon Nanotube Composites as High Performance Cathode Materials for Asymmetric Supercapacitors ... Therefore, the active surface area of the Ni3S2 nanoparticles is increased, which further enhances the capacitive performance of the composite electrode. ... nickel sulfide; carbon nanotube; composite; cathode material; asymmetric supercapacitor ...

Chao-Shuan Dai; Pei-Yi Chien; Jeng-Yu Lin; Shu-Wei Chou; Wen-Kai Wu; Ping-Hsuan Li; Kuan-Yi Wu; Tsung-Wu Lin

2013-11-05T23:59:59.000Z

73

Performance evaluation of DAAF as a booster material using the onionskin test  

SciTech Connect (OSTI)

Initiation of insensitive high explosive (IHE) formulations requires the use of a booster explosive in the initiation train. Booster material selection is crucial, as the initiation must reliably function across some spectrum of physical parameters. The interest in Diaminoazoxyfurazan (DAAF) for this application stems from the fact that it possesses many traits of an IHE but is shock sensitive enough to serve as an explosive booster. A hemispherical wave breakout test, termed the onionskin test, is one of the methods used to evaluate the performance of a booster material. The wave breakout time-position history at the surface of a hemispherical IHE charge is recorded and the relative uniformity of the breakout can be quantitatively compared between booster materials. A series of onionskin tests were performed to investigate breakout and propagation diaminoazoxyfurazan (DAAF) at low temperatures to evaluate ignition and detonation spreading in comparison to other explosives commonly used in booster applications. Some wave perturbation was observed with the DAAF booster in the onionskin tests presented. The results of these tests will be presented and discussed.

Morris, John S [Los Alamos National Laboratory; Francois, Elizabeth G [Los Alamos National Laboratory; Hooks, Daniel E [Los Alamos National Laboratory; Hill, Larry G [Los Alamos National Laboratory; Harry, Herbert H [Los Alamos National Laboratory

2010-12-02T23:59:59.000Z

74

Enhanced performance of high temperature aluminate cementitious materials incorporated with Cu powders for thermal energy storage  

Science Journals Connector (OSTI)

Abstract Cementitious materials have been extensively developed in thermal energy storage system of solar thermal power. This paper deals with the volume heat capacity, thermal conductivity, thermal expansion coefficient, and compressive strength of aluminate cementitious thermal energy storage materials with the addition of metal Cu powders. The specimens were subjected to heat-treatment at 105, 350, and 900C, respectively. In the heating process, Cu powders gradually oxidized to Cu2O and CuO, providing a so-called mass compensation mechanism for the composite paste. Meanwhile, it indicates that volume heat capacity and thermal conductivity both increase with increasing Cu powders content and decrease with the rising temperature. The optimum thermal properties were obtained at 15wt% Cu powders loading. In addition, Calorimetric Test, XRD, TGDSC, and MIP are performed for characterizing the hydration rates, the phases, the mass/heat evolution, and the pore distribution, respectively.

Huiwen Yuan; Yu Shi; Chunhua Lu; Zhongzi Xu; Yaru Ni; Xianghui Lan

2015-01-01T23:59:59.000Z

75

$?$ electric dipole moment with polarized beams  

E-Print Network [OSTI]

High luminosity Super B/Flavor factories, near and on top of the $\\Upsilon$ resonances, allow for a detailed investigation of CP-violation in $\\tau$ physics. In particular, bounds on the $\\tau$ electric dipole moment can be obtained from CP-odd observables. We perform an independent analysis from other low and high energy data. For polarized electron beam a CP-odd asymmetry, associated to the normal polarization term, can be used to set stringent bounds on the $\\tau$ electric dipole moment.

G. A. Gonzlez-Sprinberg; J. Bernabu; J. Vidal

2007-07-11T23:59:59.000Z

76

Assessment of cathode active materials from the perspective of integrating environmental impact with electrochemical performance  

Science Journals Connector (OSTI)

Abstract A method was brought forward for assessing cathode active materials from a perspective that accounts for the environmental impact and the electrochemical performance. Then the integrated performance, referred to as the final environmental impact, was quantified into a dimensionless score, \\{EIc\\} (see Eq. (2)). Subsequently, four types of cathode active materials LiFePO4/C, LiFe0.98Mn0.02PO4/C, LiFe0.98Ti0.02PO4/C, and FeF3(H2O)3/C were assessed. The results were: (1) the \\{EIc\\} sequence was LiFePO4/C (1.76E-02Pt) > LiFe0.98Ti0.02PO4/C (1.74E-02 Pt) > LiFe0.98Ti0.02PO4/C (1.66E-02Pt) >FeF3(H2O)3/C (4.98E-03 Pt), which meant FeF3(H2O)3/C was the optimal material and had the minimal final environmental impact. (2) With regard to the eleven impact categories, the category respiratory effects exerted by inorganics made up the largest percentage of the \\{EIc\\} for the four materials. (3) In the aspects of \\{EIm\\} (EI (Eco-indicator) value of a 1 kg cathode active material), average specific discharge capacity, and cycle life, the sub-optimal materials' sequence of theoretical potential for optimization was as follows: LiFe0.98Ti0.02PO4/C > LiFe0.98Mn0.02PO4/C > LiFePO4/C. This meant that the final environmental impact of LiFePO4/C was the most difficult to reduce, and the impact of LiFe0.98Ti0.02PO4/C could not be reduced very easily. (4) To reduce the final environmental impact, the following concrete measures were recommended: (a) the optimization of the synthesis processes for smaller particle diameters; (b) the adoption of other surface-coating agents, utilizing (other) dopants; (c) the substitution of the energy-efficient instruments for the energy-intensive instruments; (d) the optimization of the synthesis processes to contain fewer electricity-intensive steps.

Yajuan Yu; Dong Wang; Kai Huang; Xiang Wang; Yuhan Liang; Weijun Sun; Bo Chen; Shi Chen

2014-01-01T23:59:59.000Z

77

Magnetic moment versus tensor charge  

E-Print Network [OSTI]

We express the baryon magnetic moments in terms of the baryon tensor charges, considering the quarks as relativistic interacting objects. Once tensor charges get measured accurately, the formula for the baryon magnetic moment will serve to extract precise information on the quark anomalous magnetic moment, the quark effective mass and the ratio of the quark constituent mass to the quark effective mass. The analogous formula for the baryon electric dipole moment is of no great use as it gets eventually sizable contributions from various CP- violating sources not necessary associated to the quark electric dipole moment.

M. Mekhfi

2005-05-10T23:59:59.000Z

78

Exploring Ultrahigh Magnetic Field Processing of Materials for Developing Customized Microstructures and Enhanced Performance  

SciTech Connect (OSTI)

Thermodynamic calculations based on Gibbs free energy in the magnetization-magnetic intensity-temperature (M-H-T) magnetic equation of state space demonstrate that significantly different phase equilibria may result for those material systems where the product and parent phases exhibit different magnetization responses. These calculations show that the Gibbs free energy is changed by a factor equal to -MdH, where M and H are the magnetization and applied field strength, respectively. Magnetic field processing is directly applicable to a multitude of alloys and compounds for dramatically influencing phase stability and phase transformations. This ability to selectively control microstructural stability and alter transformation kinetics through appropriate selection of the magnetic field strength promises to provide a very robust mechanism for developing and tailoring enhanced microstructures (and even nanostructures through accelerated kinetics) with superior properties for a broad spectrum of material applications. For this Industrial Materials for the Future (IMF) Advanced Materials for the Future project, ferrous alloys were studied initially since this alloy family exhibits ferromagnetism over part of its temperature range of stability and therefore would demonstrate the maximum impact of this novel processing mechanism. Additionally, with these ferrous alloys, the high-temperature parent phase, austenite, exhibits a significantly different magnetization response from the potential product phases, ferrite plus carbide or martensite; and therefore, the solid-state transformation behavior of these alloys will be dramatically influenced by the presence of ultrahigh magnetic fields. Finally, a thermodynamic calculation capability (within ThermoCalc for example) was developed during this project to enable parametric studies to be performed to predict the magnitude of the influence of magnetic processing variables on the phase stability (phase diagrams) in ferromagnetic materials of relevance to the Industries of the Future (IOF).

Ludtka, GERALD M.

2005-03-31T23:59:59.000Z

79

Spin Structure Moments of the Proton and Deuteron  

SciTech Connect (OSTI)

Moments of the spin structure functions g1 and g2 of the proton and deuteron have been measured in the resonance region at intermediate four momentum transfer. We perform a Nachtmann moment analysis of this data, along with isovector and isoscalar combinations, in order to rigorously account for target mass effects. This analysis provides the first definitive evidence for dynamic higher twists.

Slifer, Karl; Rondon-Aramayo, Oscar; Aghalaryan, Aram; Ahmidouch, Abdellah; Asaturyan, Razmik; Bloch, Frederic; Boeglin, Werner; Bosted, Peter; Carasco, Cedric; Carlini, Roger; Cha, Jinseok; Chen, Jian-Ping; Christy, Michael; Cole, Leon; Coman, Luminita; Crabb, Donald; Danagoulian, Samuel; Day, Donal; Dunne, James; Elaasar, Mostafa; Ent, Rolf; Fenker, Howard; Frlez, Emil; Gaskell, David; Gan, Liping; Gomez, Javier; Hu, Bitao; Jourdan, Juerg; Jones, Mark; Keith, Christopher; Keppel, Cynthia; Khandaker, Mahbubul; Klein, Andreas; Kramer, Laird; Liang, Yongguang; Lichtenstadt, Jechiel; Lindgren, Richard; Mack, David; McKee, Paul; McNulty, Dustin; Meekins, David; Mkrtchyan, Hamlet; Nasseripour, Rakhsha; Niculescu, Maria-Ioana; Normand, Kristoff; Norum, Blaine; Pocanic, Dinko; Prok, Yelena; Raue, Brian; Reinhold, Joerg; Roche, Julie; Rohe, Daniela; Savvinov, Nikolai; Sawatzky, Bradley; Seely, Mikell; Sick, Ingo; Smith, C.; Smith, G.; Stepanyan, Samuel; Tang, Liguang; Tajima, Shigeyuki; Testa, Giuseppe; Vulcan, William; Wang, Kebin; Warren, G.; Wesselmann, Frank; Wood, Stephen; Yan, Chen; Yuan, Lulin; Yun, Junho; Zeier, Markus; Guo Zhu, Hong

2009-01-01T23:59:59.000Z

80

Iron-Based Amorphous Metals:The High Performance Corrosion Resistant Materials(HPCRM) Program  

SciTech Connect (OSTI)

An overview of the High-Performance Corrosion-Resistant Materials (HPCRM) Program, which was co-sponsored by the Defense Advanced Research Projects Agency (DARPA) Defense Sciences Office (DSO) and the United States Department of Energy (DOE) Office of Civilian and Radioactive Waste Management (OCRWM), is discussed. Programmatic investigations have included a broad range of topics: alloy design and composition; materials synthesis; thermal stability; corrosion resistance; environmental cracking; mechanical properties; damage tolerance; radiation effects; and important potential applications. Amorphous alloys identified as SAM2X5 (Fe{sub 49.7}Cr{sub 17.7}Mn{sub 1.9}Mo{sub 7.4}W{sub 1.6}B{sub 15.2}C{sub 3.8}Si{sub 2.4}) and SAM1651 (Fe{sub 48}Mo{sub 14}Cr{sub 15}Y{sub 2}C{sub 15}B{sub 6}) have been produced as melt-spun ribbons, drop-cast ingots and thermal-spray coatings. Chromium (Cr), molybdenum (Mo) and tungsten (W) additions provided corrosion resistance, while boron (B) enabled glass formation. Earlier electrochemical studies of melt-spun ribbons and ingots of these amorphous alloys demonstrated outstanding passive film stability. More recently thermal-spray coatings of these amorphous alloys have been made and subjected to long-term salt-fog and immersion tests. Good corrosion resistance has been observed during salt-fog testing. Corrosion rates were measured in situ with linear polarization, while simultaneously monitoring the open-circuit corrosion potentials. Reasonably good performance was observed. The sensitivity of these measurements to electrolyte composition and temperature was determined. The high boron content of this particular amorphous metal makes this amorphous alloy an effective neutron absorber, and suitable for criticality control applications. In general, the corrosion resistance of such iron-based amorphous metals is maintained at operating temperatures up to the glass transition temperature. These materials are much harder than conventional stainless steel and nickel-based materials, and are proving to have excellent wear properties, sufficient to warrant their use in earth excavation, drilling and tunnel boring applications. Large areas have been successfully coated with these materials, with thicknesses of approximately one centimeter. The observed corrosion resistance may enable applications of importance in industries such as: oil and gas production, refining, nuclear power generation, shipping, and others.

Farmer, J

2007-07-09T23:59:59.000Z

Note: This page contains sample records for the topic "momentive performance materials" from the National Library of EnergyBeta (NLEBeta).
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81

Materials  

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

2 MAG LAB REPORTS Volume 18 No. 1 CONDENSED MATTER SCIENCE Technique development, graphene, magnetism & magnetic materials, topological insulators, quantum fl uids & solids,...

82

Evidence-Based Background Material Underlying Guidance for Federal Agencies in Implementing Strategic Sustainability Performance Plans  

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

3/107 3/107 Evidence-Based Background Material Underlying Guidance for Federal Agencies in Implementing Strategic Sustainability Performance Plans Implementing Sustainability: The Institutional-Behavioral Dimension Elizabeth L. Malone Tom Sanquist Amy K. Wolfe Rick Diamond Christopher Payne Jerry Dion January 2011 (Updated June 2013) Federal Energy Management Program U.S. Department of Energy DOCUMENT AVAILABILITY Reports produced after January 1, 1996, are generally available free via the U.S. Department of Energy (DOE) Information Bridge. Web site http://www.osti.gov/bridge Reports produced before January 1, 1996, may be purchased by members of the public from the following source. National Technical Information Service 5285 Port Royal Road

83

Experimental performances of a battery thermal management system using a phase change material  

Science Journals Connector (OSTI)

Abstract Li-ion batteries are leading candidates for mobility because electric vehicles (EV) are an environmentally friendly mean of transport. With age, Li-ion cells show a more resistive behavior leading to extra heat generation. Another kind of problem called thermal runway arises when the cell is too hot, what happens in case of overcharge or short circuit. In order to evaluate the effect of these defects at the whole battery scale, an air-cooled battery module was built and tested, using electrical heaters instead of real cells for safety reasons. A battery thermal management system based on a phase change material is developed in that study. This passive system is coupled with an active liquid cooling system in order to initialize the battery temperature at the melting of the PCM. This initialization, or PCM solidification, can be performed during a charge for example, in other words when the energy from the network is available.

Charles-Victor Hmery; Franck Pra; Jean-Franois Robin; Philippe Marty

2014-01-01T23:59:59.000Z

84

Evidence-Based Background Material Underlying Guidance for Federal Agencies in Implementing Strategic Sustainability Performance Plans  

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

3/107 3/107 Evidence-Based Background Material Underlying Guidance for Federal Agencies in Implementing Strategic Sustainability Performance Plans Implementing Sustainability: The Institutional-Behavioral Dimension Elizabeth L. Malone Tom Sanquist Amy K. Wolfe Rick Diamond Christopher Payne Jerry Dion January 2011 (Updated June 2013) Federal Energy Management Program U.S. Department of Energy DOCUMENT AVAILABILITY Reports produced after January 1, 1996, are generally available free via the U.S. Department of Energy (DOE) Information Bridge. Web site http://www.osti.gov/bridge Reports produced before January 1, 1996, may be purchased by members of the public from the following source. National Technical Information Service 5285 Port Royal Road

85

2 Dynamic analysis of mixed ion beams/materials effects on the performance 3 of ITER-like devices  

E-Print Network [OSTI]

1 2 Dynamic analysis of mixed ion beams/materials effects on the performance 3 of ITER-like devices 4 Tatyana Sizyuk ,1 , Ahmed Hassanein 5 School of Nuclear Engineering, Center for Materials undersimultaneous ion penetration and mixing, scattering, reflection, physical and chemical sputtering, 20dynamic

Harilal, S. S.

86

Performance analysis of co-firing waste materials in an advanced pressurized fluidized-bed combustor  

SciTech Connect (OSTI)

The co-firing of waste materials with coal in utility scale power plants has emerged as an effective approach to produce energy and manage municipal wastes. Leading this approach is the atmospheric fluidized-bed combustor (AFBC). It has demonstrated its commercial acceptance in the utility market as a reliable source of power by burning a variety of waste and alternative fuels. The application of pressurized fluidized-bed combustor (PFBC) technology, although relatively new, can provide significant enhancements to the efficient production of electricity while maintaining the waste management benefits of AFBC. A study was undertaken to investigate the technical and economical feasibility of co-firing a PFBC with coal and municipal and industrial wastes. Focus was placed on the production of electricity and the efficient disposal of wastes for application in central power station and distributed locations. Issues concerning waste material preparation and feed, PFBC operation, plant emissions, and regulations are addressed. The results and conclusions developed are generally applicable to current and advanced PFBC design concepts. Wastes considered for co-firing include municipal solid waste (MSW), sewage sludge, and industrial de-inking sludge. Conceptual designs of two power plants rated at 250 MWe and 150 MWe were developed. Heat and material balances were completed for each plant along with environmental issues. With the PFBC`s operation at high temperature and pressure, efforts were centered on defining feeding systems capable of operating at these conditions. Air emissions and solid wastes were characterized to assess the environmental performance comparing them to state and Federal regulations. This paper describes the results of this investigation, presents conclusions on the key issues, and provides recommendations for further evaluation.

Bonk, D.L.; McDaniel, H.M. [USDOE Morgantown Energy Technology Center, WV (United States); DeLallo, M.R. Jr.; Zaharchuk, R. [Gilbert/Commonwealth, Inc., Reading, PA (United States)

1995-07-01T23:59:59.000Z

87

Effect of Climates and Building Materials on House Wall Thermal Performance  

Science Journals Connector (OSTI)

The residential housing sectors consume a large amount of fossil fuel energy. Hence the sector is responsible for huge amount of greenhouse gas emission to the atmosphere. Most energy used in the residential housing sector is mainly for space heating and cooling. In order to reduce the energy consumption in the housing sector, energy smart house wall system is required to develop. It is difficult to achieve higher thermal efficiency by using current building wall systems with their construction materials and methods. Although some studies on different aspects of residential housing were reported in the open literature, scant information is available on energy smart house wall systems for the main stream housing. Therefore, the primary objective of this study is to investigate several new house wall systems using various construction materials in order achieve higher thermal efficiency for ongoing heating and cooling. Thermal energy performance modeling was undertaken for two current and four new house wall systems for varied climate conditions across Australia. The findings revealed that at new house wall systems can provide higher energy efficiency and the reduction of greenhouse gas emission for major locations in Australia.

Fayez Aldawi; Firoz Alam; Iftekhar Khan; Mohamed Alghamdi

2013-01-01T23:59:59.000Z

88

Materials performance in a high-level radioactive waste vitrification system  

SciTech Connect (OSTI)

The Defense Waste Processing Facility (DWPF) is a Department of Energy Facility designed to vitrify highly radioactive waste. An extensive materials evaluation program has been completed on key components in the DWPF after twelve months of operation using nonradioactive simulated wastes. Results of the visual inspections of the feed preparation system indicate that the system components, which were fabricated from Hastelloy C-276, should achieve their design lives. Significant erosion was observed on agitator blades that process glass frit slurries; however, design modifications should mitigate the erosion. Visual inspections of the DWPF melter top head and off gas components, which were fabricated from Inconel 690, indicated that varying degrees of degradation occurred. Most of the components will perform satisfactorily for their two year design life. The components that suffered significant attack were the borescopes, primary film cooler brush, and feed tubes. Changes in the operation of the film cooler brush and design modifications to the feed tubes and borescopes is expected to extend their service lives to two years. A program to investigate new high temperature engineered materials and alloys with improved oxidation and high temperature corrosion resistance will be initiated.

Imrich, K.J.; Chandler, G.T.

1996-06-17T23:59:59.000Z

89

Mechanical and electrochemical performance of composite cathode contact materials for solid oxide fuel cells  

SciTech Connect (OSTI)

The feasibility of adding glass or inorganic binder to conventional SOFC cathode contact materials (CCM) in order to improve bonding to adjacent materials in the cell stack is assessed. Two glasses (SEM-COM SCZ-8 and Schott GM31107) and one inorganic binder (Aremco 644A) are mixed with LSM particles to produce composite CCM pastes. These are used to bond Mn1.5Co1.5O4-coated stainless steel mesh current collectors to anode-supported button cells. The cells are operated at 800 C for about 1000 h. The cell with SCZ-8 addition to the CCM displays quite stable operation (3.9%/1000 h degradation), whereas the other additives lead to somewhat higher degradation rate. Bonding of the CCM to coated stainless steel coupons is also assessed. Interfacial fracture toughness is determined using a four-point bend test. The fracture toughness for LSM Schott glass (12.3 N mm 1), LSM SCZ-8 glass (6.8 N mm 1) and LSM 644A binder (5.4 N mm 1) are significantly improved relative to pure LSM (1.7 N mm 1). Indeed, addition of binder or glass is found to improve bonding of the CCM layer without sacrificing cell performance.

Tucker, Michael C. [Lawrence Berkeley National Laboratory (LBNL); Dejonghe, Lutgard C. [Lawrence Berkeley National Laboratory (LBNL); Garcia-Negron, Valerie [Material Science and Technology Division, Oak Ridge National Laboratory; Trejo, Rosa M [ORNL; Lara-Curzio, Edgar [ORNL

2013-01-01T23:59:59.000Z

90

High temperature latent heat thermal energy storage: Phase change materials, design considerations and performance enhancement techniques  

Science Journals Connector (OSTI)

Abstract A very common problem in solar power generation plants and various other industrial processes is the existing gap between the period of thermal energy availability and its period of usage. This situation creates the need for an effective method by which excess heat can be stored for later use. Latent heat thermal energy storage is one of the most efficient ways of storing thermal energy through which the disparity between energy production or availability and consumption can be corrected, thus avoiding wastage and increasing the process efficiency. This paper reviews a series of phase change materials, mainly inorganic salt compositions and metallic alloys, which could potentially be used as storage media in a high temperature (above 300C) latent heat storage system, seeking to serve the reader as a comprehensive thermophysical properties database to facilitate the material selection task for high temperature applications. Widespread utilization of latent heat storage systems has been held back by the poor thermal conductivity and some other inherent drawbacks of the use of PCMs; this paper reviews several heat transfer and performance enhancement techniques proposed in the literature and discusses a number of design considerations that must be taken into account aiming to provide a broad overview for the design of high temperature latent heat based thermal energy storage systems.

Bruno Crdenas; Noel Len

2013-01-01T23:59:59.000Z

91

Studies of perovskite materials for high-performance storage media, piezoelectric, and solar energy conversion devices  

E-Print Network [OSTI]

Perovskite materials are crucial in a variety of important technological applications. Using quantum-mechanical simulations and accurate molecular dynamics models, we have computationally investigated ferroelectric materials ...

Nelson, Keith Adam

92

Higher order mixed moment approximations for the Fokker-Planck equation in one space dimension  

E-Print Network [OSTI]

We study mixed-moment models (full zeroth moment, half higher moments) for a Fokker-Planck equation in one space dimension. Mixed-moment minimum-entropy models are known to overcome the zero net-flux problem of full-moment minimum entropy Mn models. Realizability theory for these mixed moments of arbitrary order is derived, as well as a new closure, which we refer to as Kershaw closures. They provide non-negative distribution functions combined with an analytical closure. Numerical tests are performed with standard first-order finite volume schemes and compared with a finite-difference Fokker-Planck scheme.

Florian Schneider; Graham Alldredge; Martin Frank; Axel Klar

2014-05-21T23:59:59.000Z

93

MATERIAL AND PROCESS DEVELOPMENT LEADING TO ECONOMICAL HIGH-PERFORMANCE THIN-FILM SOLID OXIDE FUEL CELLS  

SciTech Connect (OSTI)

This document summarizes the technical progress from April to September 2003 for the program, Material and Process Development Leading to Economical High-Performance Thin-Film Solid Oxide Fuel Cells, contract number DE-AC26-00NT40711. Characteristics of doped lanthanum gallate (LSGMF) powder suitable for thin electrolyte fabrication have been defined. Bilayers with thin LSGMF electrolyte supported on an anode were fabricated and the fabrication process was improved. Preliminary performance was characterized. High performance cathode material Sr{sub 0.5}Sm{sub 0.5}CoO{sub 3} has been down-selected and is being optimized by modifying materials characteristics and processing parameters. The selected cathode exhibited excellent performance with cathode polarization of {approx}0.23 ohm-cm{sup 2} at 600 C.

Jie Guan; Nguyen Minh

2003-10-01T23:59:59.000Z

94

Magnetic Moments of Light Nuclei from Lattice Quantum Chromodynamics  

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

We present the results of lattice QCD calculations of the magnetic moments of the lightest nuclei, the deuteron, the triton and 3He, along with those of the neutron and proton. These calculations, performed at quark masses corresponding to m_pi ~ 800 MeV, reveal that the structure of these nuclei at unphysically heavy quark masses closely resembles that at the physical quark masses. In particular, we find that the magnetic moment of 3He differs only slightly from that of a free neutron, as is the case in nature, indicating that the shell-model configuration of two spin-paired protons and a valence neutron captures its dominant structure. Similarly a shell-model-like moment is found for the triton, mu_^3H ~ mu_p. The deuteron magnetic moment is found to be equal to the nucleon isoscalar moment within the uncertainties of the calculations.

Beane, S. R.; Chang, E.; Cohen, S.; Detmold, W.; Lin, H W.; Orginos, K.; Parreno, A; Savage, M J.; Tiburzi, B C.

2014-12-01T23:59:59.000Z

95

Magnetic Moment of the Free Muon  

Science Journals Connector (OSTI)

The magnetic moment of the positive ? meson has been measured in several target materials by a magnetic resonance technique. Muons were brought to rest with their spins parallel to a magnetic field. A radio-frequency pulse was applied to effect a spin reorientation which was detected by counting the decay electrons emerging after the pulse in a fixed direction. Results are expressed in terms of a g factor which for a spin 1/2 particle is the ratio of the actual moment to e?2m?c. The most accurate result obtained in a CHBr3 target, is that g=2(1.00260.0009) compared to the theoretical prediction of g=2(1.0012). Less accurate measurements yielded g=2.0050.005 in a copper target and g=2.000.01 in a lead target.

T. Coffin; R. L. Garwin; S. Penman; L. M. Lederman; A. M. Sachs

1958-02-01T23:59:59.000Z

96

Materials  

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

Materials Materials and methods are available as supplementary materials on Science Online. 16. W. Benz, A. G. W. Cameron, H. J. Melosh, Icarus 81, 113 (1989). 17. S. L. Thompson, H. S. Lauson, Technical Rep. SC-RR-710714, Sandia Nat. Labs (1972). 18. H. J. Melosh, Meteorit. Planet. Sci. 42, 2079 (2007). 19. S. Ida, R. M. Canup, G. R. Stewart, Nature 389, 353 (1997). 20. E. Kokubo, J. Makino, S. Ida, Icarus 148, 419 (2000). 21. M. M. M. Meier, A. Reufer, W. Benz, R. Wieler, Annual Meeting of the Meteoritical Society LXXIV, abstr. 5039 (2011). 22. C. B. Agnor, R. M. Canup, H. F. Levison, Icarus 142, 219 (1999). 23. D. P. O'Brien, A. Morbidelli, H. F. Levison, Icarus 184, 39 (2006). 24. R. M. Canup, Science 307, 546 (2005). 25. J. J. Salmon, R. M. Canup, Lunar Planet. Sci. XLIII, 2540 (2012). Acknowledgments: SPH simulation data are contained in tables S2 to S5 of the supplementary materials. Financial support

97

High-performance beam-plasma neutron sources for fusion materials development  

SciTech Connect (OSTI)

The design and performance of a relatively low-cost, plasma-based, 14-MeV deuterium-tritium neutron source for accelerated end-of-life testing of fusion reactor materials are described. An intense flux (up to 5 [times] 10[sup 18] n/m[sup 2][center dot]s) of 14-MeV neutrons is produced in a fully ionized high-density tritium target (n[sub e] [approx] 3 [times] 10[sup 21] m[sup [minus]3]) by injecting a current of 150-keV deuterium atoms. The tritium plasma target and the energetic D[sup +] density produced by D[sup 0] injection are confined in a [<=] 0.16-m-diam column by a linear magnet set, which provides magnetic fields up to 12 T. Energy deposited by transverse injection of neutral beams at the midpoint of the column is transported along the plasma column to the end regions. Three variations of the neutron source design are discussed, differing in the method of control of the energy transport. Emphasis is on the design in which the target plasma density is maintained in a region where electron thermal conduction along the column is the controlling energy-loss process.

Coensgen, F.H.; Casper, T.A.; Correll, D.L.; Damm, C.C.; Futch, A.H.; Logan, B.G.; Molvik, A.W. (Lawrence Livermore National Lab., CA (United States))

1990-10-01T23:59:59.000Z

98

Innovative Materials, Processes, and Tools Improve Performance, Quality of White LEDs  

Broader source: Energy.gov [DOE]

Lumileds Lighting joined forces with Sandia National Laboratories to investigate critical materials issues related to solid-state lighting technology.

99

Hydroxyl-decorated graphene systems as candidates for organic metal-free ferroelectrics, multiferroics, and high-performance proton battery cathode materials  

Science Journals Connector (OSTI)

Using a first-principles method we show that graphene based materials, functionalized with hydroxyl groups, constitute a class of multifunctional, lightweight, and nontoxic organic materials with functional properties such as ferroelectricity, multiferroicity, and can be used as proton battery cathode materials. For example, the polarizations of semihydroxylized graphane and graphone, as well as fully hydroxylized graphane, are much higher than any organic ferroelectric materials known to date. Further, hydroxylized graphene nanoribbons with proton vacancies at the end can have much larger dipole moments. They may also be applied as high-capacity cathode materials with a specific capacity that is six times larger than lead-acid batteries and five times that of lithium-ion batteries.

Menghao Wu; J. D. Burton; Evgeny Y. Tsymbal; Xiao Cheng Zeng; Puru Jena

2013-02-19T23:59:59.000Z

100

Detector Performance of Ammonium-Sulfide-Passivated CdZnTe and CdMnTe Materials  

SciTech Connect (OSTI)

Dark currents, including those in the surface and bulk, are the leading source of electronic noise in X-ray and gamma detectors, and are responsible for degrading a detector's energy resolution. The detector material itself determines the bulk leakage current; however, the surface leakage current is controllable by depositing appropriate passivation layers. In previous research, we demonstrated the effectiveness of surface passivation in CZT (CdZnTe) and CMT (CdMnTe) materials using ammonium sulfide and ammonium fluoride. In this research, we measured the effect of such passivation on the surface states of these materials, and on the performances of detectors made from them.

Kim, K.H.; Bolotnikov, A.E.; Camarda, G.S.; Marchini, L.; Yang, G.; Hossain, A.; Cui, Y.; Xu, L.; and James, R.B.

2010-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "momentive performance materials" 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

Future Muon Dipole Moment Measurements  

E-Print Network [OSTI]

From the famous experiments of Stern and Gerlach to the present, measurements of magnetic dipole moments, and searches for electric dipole moments of ``elementary'' particles have played a major role in our understanding of sub-atomic physics. In this talk I discuss the progress on measurements and theory of the magnetic dipole moment of the muon. I also discuss a new proposal to search for a permanent electric dipole moment (EDM) of the muon and put it into the more general context of other EDM searches. These experiments, along with searches for the lepton flavor violating decays $\\mu \\to e \\gamma$ and $\\mu^- + A \\to e^- + A$, provide a path to the high-energy frontier through precision measurements.

B. Lee Roberts

2004-12-12T23:59:59.000Z

102

The Muon Anomalous Magnetic Moment  

E-Print Network [OSTI]

The calculations entering the prediction of the standard model value for the anomalous magnetic moment of the muon $a_\\mu$ are reviewed, and compared to the very accurate experimental measurement. The situation for the electron is discussed in parallel.

Knecht, Marc

2014-01-01T23:59:59.000Z

103

Electric Dipole Moment of HD  

Science Journals Connector (OSTI)

The electric dipole moment of HD in its ground vibrational and electronic state has been obtained from the intensity of the pure rotational spectrum. Its value is (5.850.17) 10-4 D.

M. Trefler and H. P. Gush

1968-04-01T23:59:59.000Z

104

Mesoporous MnO2/Carbon Aerogel Composites as Promising Electrode Materials for High-Performance Supercapacitors  

Science Journals Connector (OSTI)

Mesoporous MnO2/Carbon Aerogel Composites as Promising Electrode Materials for High-Performance Supercapacitors ... In this Letter, we explored a novel route to prepare mesoporous MnO2/carbon aerogel composites by electrochemical deposition assisted by gas bubbles. ... The results of nitrogen adsorption?desorption experiments and electrochemical measurements showed that these obtained mesoporous MnO2/carbon aerogel composites had a large specific surface area (120 m2/g), uniform pore-size distribution (around 5 nm), high specific capacitance (515.5 F/g), and good stability over 1000 cycles, which give these composites potential application as high-performance supercapacitor electrode materials. ...

Gao-Ren Li; Zhan-Ping Feng; Yan-Nan Ou; Dingcai Wu; Ruowen Fu; Ye-Xiang Tong

2010-01-12T23:59:59.000Z

105

Achieving High Performance Polymer Tandem Solar Cells via Novel Materials Design  

E-Print Network [OSTI]

assisted preparation of narrow-bandgap conjugated polymers for high performance bulk heterojunction solar

Dou, Letian

2014-01-01T23:59:59.000Z

106

Proceedings of 2009 NSF Engineering Research and Innovation Conference, Honolulu, Hawaii Grant #0423484 Separation and Energy Use Performance of Material Recycling Systems  

E-Print Network [OSTI]

#0423484 Separation and Energy Use Performance of Material Recycling Systems Timothy Gutowski Malima I Abstract: This paper outlines current research on the performance of recycling processes and systems of recycling processes. Descriptive terminology for separation performance is presented. The goal

Gutowski, Timothy

107

U.S. Department of Energy-Funded Performance Validation of Fuel Cell Material Handling Equipment (Presentation)  

SciTech Connect (OSTI)

This webinar presentation to the UK Hydrogen and Fuel Cell Association summarizes how the U.S. Department of Energy is enabling early fuel cell markets; describes objectives of the National Fuel Cell Technology Evaluation Center; and presents performance status of fuel cell material handling equipment.

Kurtz, J.; Sprik, S.; Ramsden, T.; Saur, G.; Ainscough, C.; Post, M.; Peters, M.

2013-11-01T23:59:59.000Z

108

Effect of microstructure, grain size, and rare earth doping on the electrorheological performance of nanosized particle materials  

E-Print Network [OSTI]

and grain sizes were prepared by doping TiO2 or ZrO2 with rare earth (RE) elements, and by changingEffect of microstructure, grain size, and rare earth doping on the electrorheological performance-Hua Zhang,c Shu-Mei Chen,d Rui-Li Huange and Song Gaoa a State Key Laboratory of Rare Earth Materials

Gao, Song

109

Accurate estimation of third-order moments from turbulence measurements  

E-Print Network [OSTI]

Politano and Pouquet's law, a generalization of Kolmogorov's four-fifths law to incompressible MHD, makes it possible to measure the energy cascade rate in incompressible MHD turbulence by means of third-order moments. In hydrodynamics, accurate measurement of third-order moments requires large amounts of data because the probability distributions of velocity-differences are nearly symmetric and the third-order moments are relatively small. Measurements of the energy cascade rate in solar wind turbulence have recently been performed for the first time, but without careful consideration of the accuracy or statistical uncertainty of the required third-order moments. This paper investigates the statistical convergence of third-order moments as a function of the sample size N. It is shown that the accuracy of the third-moment depends on the number of correlation lengths spanned by the data set and a method of estimating the statistical uncertainty of the third-moment is developed. The technique is illustrated usi...

Podesta, J J; Smith, C W; Elton, D C; Malecot, Y; Gagne, Y

2009-01-01T23:59:59.000Z

110

Nonequilibrium Thermoelectrics: Low-Cost, High-Performance Materials for Cooling and Power Generation  

SciTech Connect (OSTI)

Thermoelectric materials can be made into coolers (TECs) that use electricity to develop a temperature difference, cooling something, or generators (TEGs) that convert heat directly to electricity. One application of TEGs is to place them in a waste heat stream to recuperate some of the power being lost and putting it to use more profitably. To be effective thermoelectrics, however, materials must have both high electrical conductivity and low thermal conductivity, a combination rarely found in nature. Materials selection and processing has led to the development of several systems with a figure of merit, ZT, of nearly unity. By using non-equilibrium techniques, we have fabricated higher efficiency thermoelectric materials. The process involves creating an amorphous material through melt spinning and then sintering it with either spark plasma or a hot press for as little as two minutes. This results in a 100% dense material with an extremely fine grain structure. The grain boundaries appear to retard phonons resulting in a reduced thermal conductivity while the electrons move through the material relatively unchecked. The techniques used are low-cost and scaleable to support industrial manufacturing.

Li, Q.

2011-05-18T23:59:59.000Z

111

Refractory Materials based on Magnesia-Alumina Spinel for Improved Performance in Coal Gasification Environments  

SciTech Connect (OSTI)

As part of a larger project to develop novel refractory systems and techniques to reduce energy consumption of refractory lined vessels, a team composed of Oak Ridge National Laboratory, refractory manufacturer Minteq International, Inc., and academic partner Missouri University of Science and Technology have developed new refractory materials and coating systems specifically for application in coal gasification environments. Materials were developed under this U.S. DOE funded project to address the need for innovative refractory compositions by developing MgO-Al2O3 spinel gunnable refractory compositions utilizing new aggregate materials, bond systems, protective coatings, and phase formation techniques. Work was conducted to develop and deploy these new materials and to develop and apply low cost coatings using a colloidal approach for protection against attack of the refractory brick by the serviced environment. Additionally, a light-weight back-up refractory system was developed to help offset the high thermal conductivity inherent in spinel materials. This paper discusses the efforts involved in the development of these materials, along with the laboratory testing and evaluation of these materials leading to relevant results achieved toward the reduction of chemical reactions and mechanical degradation by the service environment though compositional and processing modifications.

Hemrick, James Gordon [ORNL; Armstrong, Beth L [ORNL; Rodrigues-Schroer, Angela [Minteq International, Inc.; Colavito, [Minteq International, Inc.; Smith, Jeffrey D [ORNL; O'Hara, Kelley [University of Missouri, Rolla

2013-01-01T23:59:59.000Z

112

High-performance computing in the chemistry and physics of materials  

Science Journals Connector (OSTI)

...Special feature 1005 117 45 High-performance computing in the chemistry and physics...London WC1H OAJ, UK High performance computing (HPC) is now a key enabling...exploited the UKs national high-performance computing facilities-over two...

2011-01-01T23:59:59.000Z

113

Performance improvement of Ge-Sb-Te material by GaSb doping for phase change memory  

SciTech Connect (OSTI)

Effects of GaSb doping on phase change characteristics of Ge-Sb-Te material are investigated by in situ resistance and x-ray diffraction measurement, optical spectroscopy, and x-ray photoelectron spectroscopy. The crystallization temperature and data retention of Ge-Sb-Te material increase significantly by the addition of GaSb, which results from the high thermal stability of amorphous GaSb. In addition, GaSb-doped Ge-Sb-Te material exhibits faster crystallization speed due to the change in electronic states as a result of the formation of chemical bonds with Ga element. Incorporation of GaSb is highly effective way to enhance the comprehensive performance of Ge-Sb-Te material for phase change memory.

Lu, Yegang [State Key Laboratory of Functional Materials for Informatics, Laboratory of Nanotechnology, Shanghai Institute of Micro-system and Information Technology, Chinese Academy of Sciences, Shanghai 200050 (China) [State Key Laboratory of Functional Materials for Informatics, Laboratory of Nanotechnology, Shanghai Institute of Micro-system and Information Technology, Chinese Academy of Sciences, Shanghai 200050 (China); Faculty of Information Science and Engineering, Ningbo University, Ningbo 315211 (China); Graduate School of Chinese Academy of Sciences, Beijing 100049 (China); Zhang, Zhonghua; Song, Sannian; Cheng, Limin; Song, Zhitang [State Key Laboratory of Functional Materials for Informatics, Laboratory of Nanotechnology, Shanghai Institute of Micro-system and Information Technology, Chinese Academy of Sciences, Shanghai 200050 (China)] [State Key Laboratory of Functional Materials for Informatics, Laboratory of Nanotechnology, Shanghai Institute of Micro-system and Information Technology, Chinese Academy of Sciences, Shanghai 200050 (China); Shen, Xiang; Wang, Guoxiang; Dai, Shixun [Faculty of Information Science and Engineering, Ningbo University, Ningbo 315211 (China)] [Faculty of Information Science and Engineering, Ningbo University, Ningbo 315211 (China)

2013-06-17T23:59:59.000Z

114

Enhancement of thermopower of TAGS-85 high-performance thermoelectric materials by doping with the rare earth Dy  

SciTech Connect (OSTI)

Enhancement of thermopower is achieved by doping the narrow-band semiconductor Ag{sub 6.52}Sb{sub 6.52}Ge{sub 36.96}Te{sub 50} (acronym TAGS-85), one of the best p-type thermoelectric materials, with 1 or 2% of the rare earth dysprosium (Dy). Evidence for the incorporation of Dy into the lattice is provided by X-ray diffraction and increased orientation-dependent local fields detected by {sup 125}Te NMR spectroscopy. Since Dy has a stable electronic configuration, the enhancement cannot be attributed to 4f-electron states formed near the Fermi level. It is likely that the enhancement is due to a small reduction in the carrier concentration, detected by {sup 125}Te NMR spectroscopy, but mostly due to energy filtering of the carriers by potential barriers formed in the lattice by Dy, which has large both atomic size and localized magnetic moment. The interplay between the thermopower, the electrical resistivity, and the thermal conductivity of TAGS-85 doped with Dy results in an enhancement of the power factor (PF) and the thermoelectric figure of merit (ZT) at 730 K, from PF = 28 ?W cm{sup ?1} K{sup ?2} and ZT ? 1.3 in TAGS-85 to PF = 35 ?W cm{sup ?1} K{sup ?2} and ZT ? 1.5 in TAGS-85 doped with 1 or 2% Dy for Ge. This makes TAGS-85 doped with Dy a promising material for thermoelectric power generation.

Levin, Evgenii; Budko, Serfuei; Schmidt-Rohr, Klaus

2012-04-10T23:59:59.000Z

115

Experimental Research on Thermal Performance of Lightweight Envelope Integrated with Phase Change Material  

Science Journals Connector (OSTI)

Present relief camp built with lightweight envelope has obvious cold-house effect and poor indoor thermal environment. Advantage of phase change material provides one possible way to improve thermal...

Jun Wang; Long Xu; Enshen Long

2014-01-01T23:59:59.000Z

116

The preparation of PANI/CA composite electrode material for supercapacitors and its electrochemical performance  

Science Journals Connector (OSTI)

Polyaniline (PANI)/carbon aerogel (CA) composite electrode materials were prepared by chemical oxidation polymerization. The morphology of PANI/CA composite was examined by scanning electron microscopy. The re...

Hongfang An; Ying Wang; Xianyou Wang; Na Li

2010-04-01T23:59:59.000Z

117

Thermal Performance of Microencapsulated Phase Material (MPCM) Slurry in a Coaxial Heat Exchanger  

E-Print Network [OSTI]

Microencapsulated phase change material (MPCM) slurries and coil heat exchangers had been recently studied separately as enhancers of convective heat transfer processes. Due to the larger apparent heat related to the phase change process...

Yu, Kun

2014-05-08T23:59:59.000Z

118

Correlation Between Structure and Thermoelectric Properties of Bulk High Performance Materials for Energy Conversion  

Broader source: Energy.gov [DOE]

Rapid solidified precursor converted into crystalline bulks under pressure produced thermoelectric materials of nano-sized grains with strongly coupled grain boundaries, achieving reduced lattice thermal conductivity and increased power factor

119

Key Elements of and Materials Performance Targets for Highly Insulating Window Frames  

E-Print Network [OSTI]

Norway Abstract The thermal performance of windows is important for energyNorway Norwegian University of Science and Technology Howdy Goudey Lawrence Berkeley National Laboratory Environmental Energy

Gustavsen, Arild

2012-01-01T23:59:59.000Z

120

Numerical Simulation of Thermal Performance of Floor Radiant Heating System with Enclosed Phase Change Material  

E-Print Network [OSTI]

of the energy storage floor is designed,which places heat pipes in the enclosed phase change material (PCM) layer, without concrete in it. The PCM thermal storage time is studied in relation to the floor surface temperature under different low-temperature hot...

Qiu, L.; Wu, X.

2006-01-01T23:59:59.000Z

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


121

Performance evaluation of booster materials in the plastic bonded explosive PBX 9502 in a hemispherical wave breakout test  

SciTech Connect (OSTI)

An explosive booster is normally required to initiate detonation in an insensitive high explosive (lHE). Booster materials must be ignitable by a conventional detonator and deliver sufficient energy and favorable pulse shape to initiate the IHE charge. The explosive booster should be as insensitive as reasonably possible to maintain the overall safety margin of the explosive assembly. A hemispherical wave breakout test termed the on ionskin test is one of the methods of testing the performance of booster materials in an initiation train assembly. There are several variations of this basic test which are known by other names. In this test, the wave breakout time-position history at the surface of a hemispherical IHE acceptor charge is recorded, and the relative uniformity of breakout allows qualitative comparison between booster candidates and quantitative comparison of several metrics. The results of a series of onionskin experiments evaluating the performance of some new booster formulations in the triaminotrinitrobenzene (TA TB) -based plastic bonded explosive PBX 9502 will be presented. The boosters were tested in an onionskin arrangement in which the booster pellet was cylindrical, and the tests were performed at a temperature of-55{sup o}C to emphasize variations in spreading performance. The modification from the traditional hemispherical geometry facilitated efficient explosive fabrication and charge assembly, but the results indicate that this geometry was not ideal for several reasons. Despite the complications arising from geometry, promising performance was observed from booster formulations including 3,3' -diamino-4,4'azoxyfurazan.

Hooks, Daniel E [Los Alamos National Laboratory; Morris, John S [Los Alamos National Laboratory; Hill, Larry G [Los Alamos National Laboratory; Francois, Elizabeth [Los Alamos National Laboratory

2008-01-01T23:59:59.000Z

122

Effects of Bipolar Plate Material and Impurities in Reactant Gases on PEM Fuel Cell Performance  

Science Journals Connector (OSTI)

Farmingdale State College of the State University of New York, Farmingdale, New York 11735; Chemical Engineering & Pilot Plant Department, National Research Center, Dokki, Giza, Egypt; Advanced Energy Research and Technology Center (AERTC), Materials Science and Engineering Department, Stony Brook University, Stony Brook, New York 11794-2275; Energy Sciences and Technology Department, Brookhaven National Laboratory, Upton, New York 11973 ... Renewable energy sources such as solar, wind, and biomasses could be utilized to produce hydrogen through electrolysis, thermolysis, or biothermochemistry and fermentation processes. ...

Hazem Tawfik; Kamel El-Khatib; Yue Hung; Devinder Mahajan

2007-11-28T23:59:59.000Z

123

Remediation of asbestos containing materials by Joule heating vitrification performed in a pre-pilot apparatus  

Science Journals Connector (OSTI)

A remediation method for asbestos containing materials based on vitrification by Joule heating is presented. Crystal phase transformations of several asbestos minerals were investigated. The vitrification technology on a pre-pilot scale was applied to cement-asbestos pipes containing simultaneously chrysotile and crocidolite. The progressive heating up to 1600C led to the complete melting of fibrous minerals and the rapid cooling of the melt formed a monolithic glass. Mineralogical (XRD) and morphological (SEM) analysis showed absence of crystalline phases within the glass. The external part of the Joule heated volume was not melted but lacked asbestos because of an irreversible thermal conversion of asbestos and silicate minerals into high temperature silicates (enstatite and diopside). An absolute filter integrated in the gas effluent treatment system avoided the release of asbestos fibres during the vitrification process. This process assured the complete remediation of asbestos containing materials and its scaling up to the field application could be a suitable industrial treatment of tons of material.

Francesco Dellisanti; Piermaria L. Rossi; Giovanni Valdr

2009-01-01T23:59:59.000Z

124

A comparative study of interface reconstruction methods for multi-material ALE simulations  

SciTech Connect (OSTI)

In this paper we compare the performance of different methods for reconstructing interfaces in multi-material compressible flow simulations. The methods compared are a material-order-dependent Volume-of-Fluid (VOF) method, a material-order-independent VOF method based on power diagram partitioning of cells and the Moment-of-Fluid method (MOF). We demonstrate that the MOF method provides the most accurate tracking of interfaces, followed by the VOF method with the right material ordering. The material-order-independent VOF method performs some-what worse than the above two while the solutions with VOF using the wrong material order are considerably worse.

Kucharik, Milan [Los Alamos National Laboratory; Garimalla, Rao [Los Alamos National Laboratory; Schofield, Samuel [Los Alamos National Laboratory; Shashkov, Mikhail [Los Alamos National Laboratory

2009-01-01T23:59:59.000Z

125

A green synthesis of a layered titanate, potassium lithium titanate; lower temperature solid-state reaction and improved materials performance  

SciTech Connect (OSTI)

A layered titanate, potassium lithium titanate, with the size range from 0.1 to 30 m was prepared to show the effects of the particle size on the materials performance. The potassium lithium titanate was prepared by solid-state reaction as reported previously, where the reaction temperature was varied. The reported temperature for the titanate preparation was higher than 800 C, though 600 C is good enough to obtain single-phase potassium lithium titanate. The lower temperature synthesis is cost effective and the product exhibit better performance as photocatalysts due to surface reactivity. - Graphical abstract: Finite particle of a layered titanate, potassium lithium titanate, was prepared by solid-state reaction at lower temperature to show modified materials performance. Display Omitted - Highlights: Potassium lithium titanate was prepared by solid-state reaction. Lower temperature reaction resulted in smaller sized particles of titanate. 600 C was good enough to obtain single phased potassium lithium titanate. The product exhibited better performance as photocatalyst.

Ogawa, Makoto, E-mail: waseda.ogawa@gmail.com [Graduate School of Creative Science and Engineering, Waseda University, 1-6-1 Nishiwaseda, Shinjuku-ku, Tokyo 169-8050 (Japan); Department of Earth Sciences, Waseda University, 1-6-1 Nishiwaseda, Shinjuku-ku, Tokyo 169-8050 (Japan); Morita, Masashi, E-mail: m-masashi@y.akane.waseda.jp [Graduate School of Creative Science and Engineering, Waseda University, 1-6-1 Nishiwaseda, Shinjuku-ku, Tokyo 169-8050 (Japan); Igarashi, Shota, E-mail: uxei_yoshi_yoshi@yahoo.co.jp [Graduate School of Creative Science and Engineering, Waseda University, 1-6-1 Nishiwaseda, Shinjuku-ku, Tokyo 169-8050 (Japan); Sato, Soh, E-mail: rookie_so_sleepy@yahoo.co.jp [Graduate School of Creative Science and Engineering, Waseda University, 1-6-1 Nishiwaseda, Shinjuku-ku, Tokyo 169-8050 (Japan)

2013-10-15T23:59:59.000Z

126

New methods and materials for solid phase extraction and high performance liquid chromatography  

SciTech Connect (OSTI)

This paper describes methods for solid phase extraction and high performance liquid chromatography (HPLC). The following are described: Effects of Resin Sulfonation on the Retention of Polar Organic Compounds in Solid Phase Extraction; Ion-Chromatographic Separation of Alkali Metals In Non-Aqueous Solvents; Cation-Exchange Chromatography in Non-Aqueous Solvents; and Silicalite As a Stationary Phase For HPLC.

Dumont, P.J.

1996-04-23T23:59:59.000Z

127

MATERIAL AND PROCESS DEVELOPMENT LEADING TO ECONOMICAL HIGH-PERFORMANCE THIN-FILM SOLID OXIDE FUEL CELLS  

SciTech Connect (OSTI)

This document summarizes the technical progress from September 2002 to March 2003 for the program, Material and Process Development Leading to Economical High-Performance Thin-Film Solid Oxide Fuel Cells, contract number DE-AC26-00NT40711. The causes have been identified for the unstable open circuit voltage (OCV) and low performance exhibited by the anode-supported lanthanum gallate based cells from the earlier development. Promising results have been obtained in the area of synthesis of electrolyte and cathode powders, which showed excellent sintering and densification at low temperatures. The fabrication of cells using tapecalendering process for anode-supported thin lanthanum gallate electrolyte cells and their performance optimization is in progress.

Jie Guan; Atul Verma; Nguyen Minh

2003-04-01T23:59:59.000Z

128

PERFORMANCE TESTING OF SPRING ENERGIZED C-RINGS FOR USE IN RADIOACTIVE MATERIAL PACKAGINGS CONTAINING TRITIUM  

SciTech Connect (OSTI)

This paper describes the sealing performance testing and results of silver-plated inconel Spring Energized C-Rings used for tritium containment in radioactive shipping packagings. The test methodology used follows requirements of the American Society of Mechanical Engineers (ASME) summarized in ASME Pressure Vessel Code (B&PVC), Section V, Article 10, Appendix IX (Helium Mass Spectrometer Test - Hood Technique) and recommendations by the American National Standards Institute (ANSI) described in ANSI N14.5-1997. The tests parameters bound the predicted structural and thermal responses from conditions defined in the Code of Federal Regulations 10 CFR 71. The testing includes an evaluation of the effects of pressure, temperature, flange deflection, surface roughness, permeation, closure torque, torque sequencing and re-use on performance of metal C-Ring seals.

Blanton, P; Kurt Eberl, K

2007-10-23T23:59:59.000Z

129

Time-dependent first-principles approaches to PV materials  

SciTech Connect (OSTI)

Computational scheme for designing photovoltaic (PV) materials is presented. First-principles electron dynamics of photo-excitation and subsequent electron-hole splitting is performed based on the time-dependent density functional theory. Photo-induced enhancement of dipole moment was observed in a polar crystal and a donor-acceptor molecular pair. These experiences will pave a way to design PV material from first-principles simulations.

Miyamoto, Yoshiyuki [Nanosystem Research Institute, AIST, Central 2, 1-1-1, Umezono, Tsukuba, 305-8568 (Japan)

2013-12-10T23:59:59.000Z

130

Angular Moment Analysis of Correlations  

E-Print Network [OSTI]

For analyzing anisotropic low relative-velocity correlation-functions and the associated emission sources, we propose an expansion in terms of cartesian spherical harmonics. The expansion coefficients represent angular moments of the investigated functions. The respective coefficients for the correlation and source are directly related to each other via one-dimensional integral transforms. The shape features of the source may be partly read off from the respective features of the correlation function and can be, otherwise, imaged.

P. Danielewicz; S. Pratt

2005-04-18T23:59:59.000Z

131

Kinematic moment invariants for linear Hamiltonian systems  

Science Journals Connector (OSTI)

Quadratic moments of a particle distribution being transported through a linear Hamiltonian system are considered. A complete set of kinematic invariants made out of these moments are constructed leading to the discovery of new invariants.

Filippo Neri and Govindan Rangarajan

1990-03-05T23:59:59.000Z

132

Nuclear Quadrupole Moments and Nuclear Shell Structure  

DOE R&D Accomplishments [OSTI]

Describes a simple model, based on nuclear shell considerations, which leads to the proper behavior of known nuclear quadrupole moments, although predictions of the magnitudes of some quadrupole moments are seriously in error.

Townes, C. H.; Foley, H. M.; Low, W.

1950-06-23T23:59:59.000Z

133

Muonic Hydrogen and the Third Zemach Moment  

E-Print Network [OSTI]

We determine the third Zemach moment of hydrogen (_(2)) using only the world data on elastic electron-proton scattering. This moment dominates the O (Z alpha)^5 hadronic correction to the Lamb shift in muonic atoms. The resulting moment, _(2) = 2.71(13) fm^3, is somewhat larger than previously inferred values based on models. The contribution of that moment to the muonic hydrogen 2S level is -0.0247(12) meV.

J. L. Friar; I. Sick

2005-08-12T23:59:59.000Z

134

Muonic hydrogen and the third Zemach moment  

Science Journals Connector (OSTI)

We determine the third Zemach moment of hydrogen (?r3?(2)) using only the world data on elastic electron-proton scattering. This moment dominates the O(Z?)5 hadronic correction to the Lamb shift in muonic atoms. The resulting moment, ?r3?(2)=2.71(13)fm3, is larger than some previously inferred values based on simple models. The contribution of that moment to the muonic hydrogen 2S level is ?0.0247(12)meV.

J. L. Friar and Ingo Sick

2005-10-18T23:59:59.000Z

135

Development of electron reflection suppression materials for improved thermionic energy converter performance using thin film deposition techniques  

SciTech Connect (OSTI)

Nonideal electrode surfaces cause significant degree of electron reflection from collector during thermionic converter operation. The effect of the collector surface structure on the converter performance was assessed through the development of several electron reflection suppression materials using various thin film deposition techniques. The double-diode probe method was used to compare the J-V characteristics of converters with polished and modified collector surfaces for emitter temperature and cesium vapor pressure in the ranges of 900-2000 K and 0.02-1.5 torr, respectively. The coadsorption of cesium and oxygen with respective partial vapor pressures of {approx}1.27 torr and a few microtorrs reduced the emitter work function to a minimum value of 0.99 eV. It was found that the collector surfaces with matte black appearance such as platinum black, voided nickel from radio-frequency plasma sputtering, and etched electroless Ni-P with craterlike pore morphology exhibited much better performance compared with polished collector surface. For these thin films, the increase in the maximum output voltage was up to 2.0 eV. For optimum performance with minimum work function and maximum saturation emission current density, the emitter temperature was in the range of 1100-1500 K, depending on the collector surface structure. The use of these materials in cylindrical converter design and/or in combination with hybrid mode triode configuration holds great potential in low and medium scale power generators for commercial use.

Islam, Mohammad; Inal, Osman T.; Luke, James R. [Department of Materials and Metallurgical Engineering, New Mexico Institute of Mining and Technology, Socorro, New Mexico 87801 (United States); New Mexico Institute of Mining and Technology, Institute for Engineering Research and Applications (IERA) , 901 University Blvd. SE, Albuquerque, New Mexico 87106-4339 (United States)

2006-10-15T23:59:59.000Z

136

DOE-DARPA High-Performance Corrosion-Resistant Materials (HPCRM), Annual HPCRM Team Meeting & Technical Review  

SciTech Connect (OSTI)

The overall goal is to develop high-performance corrosion-resistant iron-based amorphous-metal coatings for prolonged trouble-free use in very aggressive environments: seawater & hot geothermal brines. The specific technical objectives are: (1) Synthesize Fe-based amorphous-metal coating with corrosion resistance comparable/superior to Ni-based Alloy C-22; (2) Establish processing parameter windows for applying and controlling coating attributes (porosity, density, bonding); (3) Assess possible cost savings through substitution of Fe-based material for more expensive Ni-based Alloy C-22; (4) Demonstrate practical fabrication processes; (5) Produce quality materials and data with complete traceability for nuclear applications; and (6) Develop, validate and calibrate computational models to enable life prediction and process design.

Farmer, J; Brown, B; Bayles, B; Lemieux, T; Choi, J; Ajdelsztajn, L; Dannenberg, J; Lavernia, E; Schoenung, J; Branagan, D; Blue, C; Peter, B; Beardsley, B; Graeve, O; Aprigliano, L; Yang, N; Perepezko, J; Hildal, K; Kaufman, L; Lewandowski, J; Perepezko, J; Hildal, K; Kaufman, L; Lewandowski, J; Boudreau, J

2007-09-21T23:59:59.000Z

137

Electric Dipole Moment of Magnetic Monopole  

E-Print Network [OSTI]

The electric dipole moment of magnetic monopoles with spin is studied in the N=2 supersymmetric gauge theory. The dipole moments of the electric charge distributions, as well as the dipole moments due to the magnetic currents, are calculated. The contribution of charge distribution of the fermion to the gyroelectric ratio is expressed by using zeta(3).

Makoto Kobayashi

2007-03-07T23:59:59.000Z

138

Nuclear Waste Disposal and Strategies for Predicting Long-Term Performance of Material  

SciTech Connect (OSTI)

Ceramics have been an important part of the nuclear community for many years. On December 2, 1942, an historic event occurred under the West Stands of Stagg Field, at the University of Chicago. Man initiated his first self-sustaining nuclear chain reaction and controlled it. The impact of this event on civilization is considered by many as monumental and compared by some to other significant events in history, such as the invention of the steam engine and the manufacturing of the first automobile. Making this event possible and the successful operation of this first man-made nuclear reactor, was the use of forty tons of UO2. The use of natural or enriched UO2 is still used today as a nuclear fuel in many nuclear power plants operating world-wide. Other ceramic materials, such as 238Pu, are used for other important purposes, such as ceramic fuels for space exploration to provide electrical power to operate instruments on board spacecrafts. Radioisotopic Thermoelectric Generators (RTGs) are used to supply electrical power and consist of a nuclear heat source and converter to transform heat energy from radioactive decay into electrical power, thus providing reliable and relatively uniform power over the very long lifetime of a mission. These sources have been used in the Galileo spacecraft orbiting Jupiter and for scientific investigations of Saturn with the Cassini spacecraft. Still another very important series of applications using the unique properties of ceramics in the nuclear field, are as immobilization matrices for management of some of the most hazardous wastes known to man. For example, in long-term management of radioactive and hazardous wastes, glass matrices are currently in production immobilizing high-level radioactive materials, and cementious forms have also been produced to incorporate low level wastes. Also, as part of nuclear disarmament activities, assemblages of crystalline phases are being developed for immobilizing weapons grade plutonium, to not only produce environmentally friendly products, but also forms that are proliferation resistant. All of these waste forms as well as others, are designed to take advantage of the unique properties of the ceramic systems.

Wicks, G.G.

2001-03-28T23:59:59.000Z

139

Improved resins and novel materials and methods for solid phase extraction and high performance liquid chromatography  

SciTech Connect (OSTI)

Solid-phase extraction (SPE) has grown to be one of the most widely used methods for isolation and preconcentration of a vast range of compounds from aqueous solutions. By modifying polymeric SPE resins with chelating functional groups, the selective uptake of metals was accomplished. The resin, along with adsorbed metals, was vaporized in the ICP and detection of the metals was then possible using either mass or emission spectroscopy. Drug analyses in biological fluids have received heightened attention as drug testing is on the increase both in sports and in the work environment. By using a direct-injection technique, biological fluids can be injected directly into the liquid chromatographic system with no pretreatment. A new surfactant, a sulfonated form of Brij-30 (Brij-S) is shown to prevent the uptake of serum proteins on commercial HPLC columns by forming a thin coating on the silica C18 surface. Excellent separations of eight or more drugs with a wide range of retention times were obtained. The separations had sharper peaks and lower retention times than similar separations performed with the surfactant sodium dodecylsulfate (SDS). Quantitative recovery of a number of drugs with limits of detection near 1 ppm with a 5 {micro}l injection volume were obtained. Finally, a method for solid-phase extraction in a syringe is introduced. The system greatly reduced the volume of solvent required to elute adsorbed analytes from the SPE bed while providing a semi-automated setup. SPE in a syringe consists of a very small bed of resin-loaded membrane packed into a GC or HPLC syringe. After extraction, elution was performed with just a few {micro}l of solvent. This small elution volume allowed injection of the eluent directly from the syringe into the chromatographic system, eliminating the handling problems associated with such small volumes.

Freeze, R.

1997-10-08T23:59:59.000Z

140

High performance PEM fuel cells - from electrochemistry and material science to engineering development of a multicell stack. Interim report  

SciTech Connect (OSTI)

Under Task 1, it was shown that apparently identical MEAs of 50 Cm2 active area with 1.4 mg/cm2 Pt./C cathodes (20 wt % Pt on C) and 0.3 mg/cm2 Pt/C anodes with 40 microns thickness Gore-Select(TM) PEM material did not give identical performance, except in the Tafel region. This indicates that their overall active surface areas at low current density were identical, and that performance suffered at high current density in the range of interest. In all cases, this is shown as a change in polarization slope in the linear region. The slope of the best of these cells was 0.25 ohms cm2, and that of the worst was ca. 0.36 ohms cm2. In consequence, the performance of the best cell at 0.7 V with humidified gases was 0.44 A/cm2, and that of the worst was 0.3 A/cm2. These are substantially less than 0.7 A/cm2 at 0.7 V, which has been achieved in 5 cm2 cells. This is the fuel cell performance level required to achieve the overall system` performance goals (i.e., 0.7 A/cm2 and 0.7 V on hydrogen and air at atmospheric pressure). The variable polarization slope gives the impression of an internal resistance component, but the internal resistance measured at high frequency is rather low, about 0.12 ohms cm2. Thus, the differences in performance observed are either due to problems with the flow-field, or to dispersion in performance between individual MEAs, which otherwise contain identical components made by identical methods.

Appleby, A.J.

1997-03-04T23:59:59.000Z

Note: This page contains sample records for the topic "momentive performance materials" 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

Weak Interactions in Atoms Nuclear Anapole Moment Weak Coupling Constants Nuclear Anapole Moment  

E-Print Network [OSTI]

Weak Interactions in Atoms Nuclear Anapole Moment Weak Coupling Constants Nuclear Anapole Moment;Weak Interactions in Atoms Nuclear Anapole Moment Weak Coupling Constants Plan of the talk Weak Interactions in Atoms Charged and Neutral Currents. Effective P-odd Hamiltonian Nuclear Anapole Moment

Pines, Alexander

142

Limit on the Muon Neutrino Magnetic Moment And A Measurement of the CCPIP to CCQE Cross Section Ratio.  

E-Print Network [OSTI]

??A search for the muon neutrino magnetic moment was conducted using the Mini- BooNE low energy neutrino data. The analysis was performed by analyzing the (more)

Ouedraogo, Serge Arisitde

2008-01-01T23:59:59.000Z

143

Iron-Based Amorphous-Metals: High-Performance Corrosion-Resistant Materials (HPCRM) Development Final Report  

SciTech Connect (OSTI)

An overview of the High-Performance Corrosion-Resistant Materials (HPCRM) Program, which was co-sponsored by the Defense Advanced Research Projects Agency (DARPA) Defense Sciences Office (DSO) and the United States Department of Energy (DOE) Office of Civilian and Radioactive Waste Management (OCRWM), is discussed. Programmatic investigations have included a broad range of topics: alloy design and composition; materials synthesis; thermal stability; corrosion resistance; environmental cracking; mechanical properties; damage tolerance; radiation effects; and important potential applications. Amorphous alloys identified as SAM2X5 (Fe{sub 49.7}Cr{sub 17.7}Mn{sub 1.9}Mo{sub 7.4}W{sub 1.6}B{sub 15.2}C{sub 3.8}Si{sub 2.4}) and SAM1651 (Fe{sub 48}Mo{sub 14}Cr{sub 15}Y{sub 2}C{sub 15}B{sub 6}) have been produced as melt-spun ribbons, drop-cast ingots and thermal-spray coatings. Chromium (Cr), molybdenum (Mo) and tungsten (W) additions provided corrosion resistance, while boron (B) enabled glass formation. Earlier electrochemical studies of melt-spun ribbons and ingots of these amorphous alloys demonstrated outstanding passive film stability. More recently thermal-spray coatings of these amorphous alloys have been made and subjected to long-term salt-fog and immersion tests. Good corrosion resistance has been observed during salt-fog testing. Corrosion rates were measured in situ with linear polarization, while simultaneously monitoring the open-circuit corrosion potentials. Reasonably good performance was observed. The sensitivity of these measurements to electrolyte composition and temperature was determined. The high boron content of this particular amorphous metal make this amorphous alloy an effective neutron absorber, and suitable for criticality control applications. In general, the corrosion resistance of these iron-based amorphous metals is maintained at operating temperatures up to the glass transition temperature. These materials are much harder than conventional stainless steel and nickel-based materials, and are proving to have excellent wear properties, sufficient to warrant their use in earth excavation, drilling and tunnel boring applications. The observed corrosion resistance may enable applications of importance in industries such as: oil and gas production, refining, nuclear power generation, shipping, and others. Large areas have been successfully coated with these materials, with thicknesses of approximately one centimeter.

Farmer, J C; Choi, J; Saw, C; Haslem, J; Day, D; Hailey, P; Lian, T; Rebak, R; Perepezko, J; Payer, J; Branagan, D; Beardsley, B; D'Amato, A; Aprigliano, L

2009-03-16T23:59:59.000Z

144

Vanadium oxide based nanostructured materials for catalytic oxidative dehydrogenation of propane : effect of heterometallic centers on the catalyst performance.  

SciTech Connect (OSTI)

Catalytic properties of a series of new class of catalysts materials-[Co{sub 3}(H{sub 2}O){sub 12}V{sub 18}O{sub 42} (XO{sub 4})].24H{sub 2}O (VNM-Co), [Fe{sub 3}(H{sub 2}O){sub 12}V{sub 18}O{sub 42}(XO{sub 4})].24H{sub 2}O (VNM-Fe) (X = V, S) and [H{sub 6}Mn{sub 3}(H{sub 2}O){sub 12}V{sub 18}O{sub 42}(VO{sub 4})].30H{sub 2}O for the oxidative dehydrogenation of propane is studied. The open-framework nanostructures in these novel materials consist of three-dimensional arrays of {l_brace}V{sub 18}O{sub 42}(XO{sub 4}){r_brace} (X = V, S) clusters interconnected by {l_brace}-O-M-O-{r_brace} (M = Mn, Fe, Co) linkers. The effect of change in the heterometallic center M (M = Mn, Co, Fe) of the linkers on the catalyst performance was studied. The catalyst material with Co in the linker showed the best performance in terms of propane conversion and selectivity at 350 C. The material containing Fe was most active but least selective and Mn containing catalyst was least active. The catalysts were characterized by Temperature Programmed Reduction (TPR), BET surface area measurement, Diffuse Reflectance Infrared Fourier Transform Spectroscopy, and X-ray Absorption Spectroscopy. TPR results show that all three catalysts are easily reducible and therefore are active at relatively low temperature. In situ X-ray absorption near edge spectroscopy (XANES) and extended X-ray absorption fine structure spectroscopy (EXAFS) studies revealed that the oxidation state of Co(II) remained unchanged up to 425 C (even after pretreatment). The reduction of Co(II) into metallic form starts at 425 C and this process is completed at 600 C.

Khan, M. I.; Deb, S.; Aydemir, K.; Alwarthan, A. A.; Chattopadhyay, S.; Miller, J. T.; Marshall, C. L. (Chemical Sciences and Engineering Division); (Illinois Inst. of Tech.); (King Saud Univ.)

2010-01-01T23:59:59.000Z

145

Tougher than Kevlar: Researchers create new high-performance fiber Posted In: Editors Picks | R&D Daily | Carbon Nanotubes & Graphene | Materials Science |  

E-Print Network [OSTI]

and satellites. To create the new fiber, researchers began with carbon nanotubes--cylindrical-shaped carbonTougher than Kevlar: Researchers create new high-performance fiber Posted In: Editors Picks | R&D Daily | Carbon Nanotubes & Graphene | Materials Science | Nanotechnology | Engineering | Material

Espinosa, Horacio D.

146

Recycling of Flue Gas Desulfurization residues in gneiss based hot mix asphalt: Materials characterization and performances evaluation  

Science Journals Connector (OSTI)

Abstract On the one hand, huge amount of Flue Gas Desulfurization (FGD) residues, produced during scrubbing flue gas, is discarded as solid waste. Such solid waste would cause serious environmental problems. One the other hand, high quality aggregates, such as limestone and basalt, are running out due to the rapid development of highway construction. Ungraded aggregates such as gneiss are therefore considered in China to replace the high quality aggregates. The application of FGD residues as a filler in gneiss based asphalt mixturehas benefits both in environmental and economic sides. The main objective of this research was to visualize the raw materials characterization and evaluate the effect of FGD residues on the performance of gneiss based asphalt mixture. X-ray diffraction (XRD), X-ray fluorescence (XRF), Scanning Electron Microscope (SEM), Differential Scanning Calorimetric & Thermal gravimetric (DSCTG) were used to investigate the features of raw materials. The performance of gneiss based asphalt mixture including high-temperature deformation resistance, low-temperature crack resistance and moisture-induced damage resistance were evaluated. Dynamic creep test, three-point bending test, Retained Marshall Stability (RMS), Tensile Strength Ratio (TSR), Indirect Tensile (IDT) strength and Resilient Modulus (MR) test were conducted and analyzed. Dissipated Creep Strain Energy to fracture (DCSEf) ratio, fracture energy and model analysis were also used to evaluate moisture resistance, crack resistance and deformation resistance of asphalt mixture respectively. Research results indicate that FGD residues can partly improve the moisture resistance and crack resistance of gneiss asphalt mixture, while it might worse the high-temperature deformation resistance.

Zongwu Chen; Shaopeng Wu; Fuzhou Li; Juyong Chen; Zhehuan Qin; Ling Pang

2014-01-01T23:59:59.000Z

147

High Performance Valve Materials  

Broader source: Energy.gov [DOE]

2009 DOE Hydrogen Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting, May 18-22, 2009 -- Washington D.C.

148

DETERMINATION OF RADIAL MOMENTS OF AN AEROSOL  

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

DETERMINATION OF RADIAL MOMENTS OF AN AEROSOL DETERMINATION OF RADIAL MOMENTS OF AN AEROSOL SIZE DISTRIBUTION FROM MEASUREMENTS OF LIGHT TRANSMITTANCE AND SCATTERING Ernie R. Lewis and Stephen E. Schwartz Brookhaven National Laboratory, Upton, NY 11933 ses@bnl.gov elewis@bnl.gov MOMENTS FROM MEASUREMENTS As each of the measured quantities is linear in the size distribution dn/dr, it is possible to construct linear combinations of measurements that yield

149

Neutrino magnetic moment in a magnetized plasma  

E-Print Network [OSTI]

The contribution of a magnetized plasma to the neutrino magnetic moment is calculated. It is shown that only part of the additional neutrino energy in magnetized plasma connecting with its spin and magnetic field strength defines the neutrino magnetic moment. It is found that the presence of magnetized plasma does not lead to the considerable increase of the neutrino magnetic moment in contrast to the results presented in literature previously.

N. V. Mikheev; E. N. Narynskaya

2010-11-08T23:59:59.000Z

150

Performance evaluation of polymer/clay nanocomposite thermal protection systems based on polyethylene glycol phase change material  

Science Journals Connector (OSTI)

Phase change materials (PCMs) are substances with a high ... can be utilized in designing the heat protective materials as well as in the thermal energy...

Ahmad Reza Bahramian; Leila Sadat Ahmadi; Mehrdad Kokabi

2014-03-01T23:59:59.000Z

151

Molecular CP-violating magnetic moment  

Science Journals Connector (OSTI)

A concept of CP-violating (T,P-odd) permanent molecular magnetic moments ?CP is introduced. We relate the moments to the electric dipole moment of electron (eEDM) and estimate ?CP for several diamagnetic polar molecules. The moments exhibit a steep, Z5, scaling with the nuclear charge Z of the heavier molecular constituent. A measurement of the CP-violating magnetization of a polarized sample of heavy molecules may improve the present limit on eEDM by several orders of magnitude.

Andrei Derevianko and M. G. Kozlov

2005-10-06T23:59:59.000Z

152

Study on thermal performance of high power LED employing aluminum filled epoxy composite as thermal interface material  

Science Journals Connector (OSTI)

Abstract This paper elucidates the thermal behavior of an LED employing metal filled polymer matrix as thermal interface material (TIM) for an enhanced heat dissipation characteristic. Highly thermal conductive aluminum (Al) particles were incorporated in bisphenol A diglycidylether (DGEBA) epoxy matrix to study the effect of filler to polymer ratio on the thermal performance of high power LEDs. The curing behavior of DGEBA was studied by differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). The dispersion nature of the Al fillers in polymer matrix was verified with Field Emission Scanning Electron Microscope (FESEM). The thermal performance of synthesized Al filled polymer composite as TIM was tested with an LED employing thermal transient measurement technique. Comparing the filler to polymer ratio, the rise in junction temperature for 60wt% Al filled composite was higher by 11.1C than 50wt% Al filled composite at cured state. Observed also from the structure function analysis that the total thermal resistance was 10.96K/W higher for 60wt% Al filled composite compared to 50wt% Al filled composite. On the other hand, a significant rise of 9.5C in the junction temperature between cured and uncured samples of 50wt% Al filled polymer TIM was observed and hence the importance of curing process of metal filled polymer composite for effective heat dissipation is discussed extensively in this work.

P. Anithambigai; S. Shanmugan; D. Mutharasu; T. Zahner; D. Lacey

2014-01-01T23:59:59.000Z

153

Performance investigation of thermal energy storage system with Phase Change Material (PCM) for solar water heating application  

Science Journals Connector (OSTI)

Abstract In order to harvest solar energy, thermal energy storage (TES) system with Phase Change Material (PCM) has been receiving greater attention because of its large energy storage capacity and isothermal behavior during charging and discharging processes. In the present experimental study, shell and tube TES system using paraffin wax was used in a water heating system to analyze its performance for solar water heating application. Energy and exergy including their cost analyses for the TES system were performed. Accordingly, total life cycle cost was calculated for different flow rates of the Heat Transfer Fluid (HTF). With 0.033kg/min and 0.167kg/min flow rates of water as HTF, energy efficiencies experienced were 63.88% and 77.41%, respectively, but in exergy analysis, efficiencies were observed to be about 9.58% and 6.02%, respectively. Besides, the total life cycle cost was predicted to be $ 654.61 for 0.033kg/min flow rate, which could be reduced to $ 609.22 by increasing the flow rate to 0.167kg/min. Therefore it can be summarized that total life cycle cost decreases with the increase of flow rate.

M.H. Mahfuz; M.R. Anisur; M.A. Kibria; R. Saidur; I.H.S.C. Metselaar

2014-01-01T23:59:59.000Z

154

Kinetic role of the metatarsophalangeal joint in normal walking: Joint moment and power  

Science Journals Connector (OSTI)

Joint moment and power of the metatarsophalangeal (MP) joint in ... with synchronous measurements of ground reaction forces and foot pressure distribution was performed with the two-segment foot model. Twenty-two...

Youngho Kim; Seunghyeon Kim; Jongsang Son

2012-08-01T23:59:59.000Z

155

A technical note on performance testing of a solar box cooker provided with sensible storage material on the surface of absorbing plate  

Science Journals Connector (OSTI)

A box type solar cooker having a double glass cover and a plane mirror reflector has been tested for its thermal performance. In the present study, performance of solar box cooker has been compared by using two different sensible heat storage materials (sand and granular carbon). By using these materials as a mixture and spread it over absorber tray in the form of thin layer and fully packed with a float glass shows the significant improvement in the performance of box type solar cooker.

Abhishek Saxena; Varun; Ghanshyam Srivastava

2012-01-01T23:59:59.000Z

156

NEUTRON ELECTRIC-DIPOLE MOMENT, ULTRACOLD NEUTRONS  

E-Print Network [OSTI]

NEUTRON ELECTRIC-DIPOLE MOMENT, ULTRACOLD NEUTRONS AND POLARIZED 3He R. GOLUB~and Steve K REPORTS (Review Section of Physics Letters) 237, No. 1(1994)1--62. PHYSICS REPORTS North-Holland Neutron electric-dipole moment, ultracold neutrons and polarized 3He R. Goluba and Steve K. Lamoreauxb a

157

Magnetic Moment of Electrons near Cosmic Strings  

E-Print Network [OSTI]

We study the effect of background geometry generated by a thin cosmic string on the anomalous magnetic moment of the electron. We find that the magnitude of the quantum correction to the magnetic moment depends on the distance from the cosmic string as well as on the deficit angle.

Takuya Maki; Kiyoshi Shiraishi

2014-01-27T23:59:59.000Z

158

General moment invariants for linear Hamiltonian systems  

Science Journals Connector (OSTI)

This paper studies the behavior of the moments of a particle distribution as it is transported through a Hamiltonian system. Functions of moments that remain invariant for an arbitrary linear Hamiltonian system are constructed. These functions remain approximately invariant for Hamiltonian systems that are not strongly nonlinear. Consequently, they can be used to characterize the degree of nonlinearity of the system.

Alex J. Dragt; Filippo Neri; Govindan Rangarajan

1992-02-15T23:59:59.000Z

159

Theoretical and Experimental Thermal Performance Analysis of Complex Thermal Storage Membrane Containing Bio-Based Phase Change Material (PCM)  

SciTech Connect (OSTI)

Since 2000, an ORNL research team has been testing different configurations of PCM-enhanced building envelop components to be used in residential and commercial buildings. During 2009, a novel type of thermal storage membrane was evaluated for building envelope applications. Bio-based PCM was encapsulated between two layers of heavy-duty plastic film forming a complex array of small PCM cells. Today, a large group of PCM products are packaged in such complex PCM containers or foils containing arrays of PCM pouches of different shapes and sizes. The transient characteristics of PCM-enhanced building envelope materials depend on the quality and amount of PCM, which is very often difficult to estimate because of the complex geometry of many PCM heat sinks. The only widely used small-scale analysis method used to evaluate the dynamic characteristics of PCM-enhanced building products is the differential scanning calorimeter (DSC). Unfortunately, this method requires relatively uniform, and very small, specimens of the material. However, in numerous building thermal storage applications, PCM products are not uniformly distributed across the surface area, making the results of traditional DSC measurements unrealistic for these products. In addition, most of the PCM-enhanced building products contain blends of PCM with fire retardants and chemical stabilizers. This combination of non-uniform distribution and non-homogenous composition make it nearly impossible to select a representative small specimen suitable for DSC tests. Recognizing these DSC limitations, ORNL developed a new methodology for performing dynamic heat flow analysis of complex PCM-enhanced building materials. An experimental analytical protocol to analyze the dynamic characteristics of PCM thermal storage makes use of larger specimens in a conventional heat-flow meter apparatus, and combines these experimental measurements with three-dimensional (3-D) finite-difference modeling and whole building energy simulations. Based on these dynamic tests and modeling, ORNL researchers then developed a simplified one-dimensional (1-D) model of the PCM-enhanced building component that can be easily used in whole-building simulations. This paper describes this experimental-analytical methodology as used in the analysis of an insulation assembly containing a complex array of PCM pouches. Based on the presented short example of whole building energy analysis, this paper describes step-by-step how energy simulation results can be used for optimization of PCM-enhanced building envelopes. Limited results of whole building energy simulations using the EnergyPlus program are presented as well.

Kosny, Jan [ORNL; Stovall, Therese K [ORNL; Shrestha, Som S [ORNL; Yarbrough, David W [ORNL

2010-12-01T23:59:59.000Z

160

Scientists capture 'redox moments' in living cells | EMSL  

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

Scientists capture 'redox moments' in living cells Scientists capture 'redox moments' in living cells Better understanding of hardy bacteria enhances tool for biofuel creation...

Note: This page contains sample records for the topic "momentive performance materials" 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

CFD Combustion Modeling with Conditional Moment Closure using...  

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

Combustion Modeling with Conditional Moment Closure using Tabulated Chemistry CFD Combustion Modeling with Conditional Moment Closure using Tabulated Chemistry A method is...

162

Synthesis and electrochemical performance of LiMnxFex?1PO4/C cathode material for lithium secondary batteries  

Science Journals Connector (OSTI)

Carbon-coated LiMn0.8Fe0.2PO4.../C (C = 5 wt.%, 10 wt.%, 15 wt.%, and 20 wt.%) cathode material is synthesized using a solid-state method. No impurity is found within the synthesized active material, which is con...

Hyun-Soo Kim; Kyung Min Jin; Bong Soo Jin

2011-10-01T23:59:59.000Z

163

Subeutectic Growth of Single-Crystal Silicon Nanowires Grown on and Wrapped with Graphene Nanosheets: High-Performance Anode Material for Lithium-Ion Battery  

Science Journals Connector (OSTI)

Subeutectic Growth of Single-Crystal Silicon Nanowires Grown on and Wrapped with Graphene Nanosheets: High-Performance Anode Material for Lithium-Ion Battery ... Yu, A.; Park, H. W.; Davies, A.; Higgins, D.; Chen, Z.; Xaio, X.Free-Standing Layer-by-Layer Hybrid Thin Film of Graphene-MnO2 Nanotube as Anode for Lithium Ion Batteries J. Phys. ...

Fathy M Hassan; Abdel Rahman Elsayed; Victor Chabot; Rasim Batmaz; Xingcheng Xiao; Zhongwei Chen

2014-07-31T23:59:59.000Z

164

BME 344: Biological Performance of Materials Winter Quarter 2005 8:00-9:20am Tu/Th, Room M166 TECH  

E-Print Network [OSTI]

Textbooks: Biological Performance of Materials. Fundamentals of Biocompatibility., by Jonathan Black, 3rd Edition, Marcel Dekker, 1999. Intermolecular and Surface Forces, by Jacob Israelachvili, 2nd Edition policy on academic integrity can be found in the student handbook or at: (http

MacIver, Malcolm A.

165

Investigation of materials performances in high moisture environments including corrosive contaminants typical of those arising by using alternative fuels in gas turbines  

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

materials performances in high moisture materials performances in high moisture environments including corrosive contaminants typical of those arising by using alternative fuels in gas turbines Gerald Meier, Frederick Pettit and Keeyoung Department of Materials Science and Engineering, Jung University of Pittsburgh Pittsburgh, PA 15260 Peer review Workshop III UTSR Project 04 01 SR116 October 18-20, 2005 Project Approach Task I Selection and Preparation of Specimens Task II Selection of Test Conditions Specimens : GTD111+CoNiCrAlY and Pt Aluminides, N5+Pt Aluminides Deposit : No Deposit, CaO, CaSO 4 , Na 2 SO 4 1150℃ Dry 1150℃ Wet 950℃ Wet 750℃ SO 3 950℃ Dry Selection of Test Temperature, T 1 , Gas Environment and Deposit Composition, D

166

Technical basis for performance goals, design requirements, and material recommendations for the NNWSI [Nevada Nuclear Waste Storage Investigations] Repository Sealing Program  

SciTech Connect (OSTI)

The objectives are to develop performance goals, to assess the need for seals, to define design requirements, and to recommend potential sealing materials for the sealing system. Performance goals are the allowable amounts of water that can enter the waste disposal areas directly from the rock mass above the repository and indirectly from shafts and ramps connecting to the underground facility. These goals are developed using a numerical model that calculates radionuclide releases. To determine the need for sealing, estimates of water flow into shafts, ramps, and the underground facility under anticipated conditions are developed and are compared with the performance goals. It is concluded that limited sealing measures, such as emplacement of shaft fill, are sufficient to properly isolate the radioactive waste in the repository. A broad range of sealing design options and associated hydrologic design requirements are proposed to provide a greater degree of assurance that the hydrologic performance goals can be met even if unanticipated hydrologic flows enter the waste disposal areas. The hydrologic design requirements are specific, hydraulic conductivity values selected for specific, seal design options to achieve the performance goals. Using these hydrologic design requirements and additional design requirements, preferred materials are identified for continued design and laboratory analyses. In arriving at these preferred materials, results from previous laboratory testing are briefly discussed. 96 refs., 48 figs., 28 tabs.

Fernandez, J.A.; Kelsall, P.C.; Case, J.B.; Meyer, D.

1987-09-01T23:59:59.000Z

167

Electronic Materials Letters, Vol. 4, No. 3 (2008), pp. 103-105 The Enhancement of Cycle-Life Performance in  

E-Print Network [OSTI]

for Energy Conversion and Storage, and Research Institute of Advanced Materials, Seoul National University-ion battery, Al2O3, LiCoO2, nanoscale, coating 1. INTRODUCTION Commercial rechargeable lithium-ion batteries

Park, Byungwoo

168

Thermal Performance of a Novel Heat Transfer Fluid Containing Multiwalled Carbon Nanotubes and Microencapsulated Phase Change Materials  

E-Print Network [OSTI]

The present research work aims to develop a new heat transfer fluid by combining multiwalled carbon nanotubes (MWCNT) and microencapsulated phase change materials (MPCMs). Stable nanofluids have been prepared using different sizes of multiwalled...

Tumuluri, Kalpana

2011-08-08T23:59:59.000Z

169

Effects of different particle sizes on electrochemical performance of spinel LiMn2O4 cathode materials  

Science Journals Connector (OSTI)

For the preparation of cathode sheets, a slurry was formed by mixing the active material (85%), acetylene black (10%)...N...-methyl-2-pyrrolidone, NMP). The mixed slurry was coated onto an aluminum current collec...

Ting-Feng Yi; Xin-Guo Hu; Chang-Song Dai; Kun Gao

2007-06-01T23:59:59.000Z

170

Template-Free Electrochemical Synthesis of Sn Nanofibers as High-Performance Anode Materials for Na-Ion Batteries  

Science Journals Connector (OSTI)

Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Yuseong-gu, Daejeon 305-701, Republic of Korea ... sciences and engineering. ...

Do-Hwan Nam; Tae-Hee Kim; Kyung-Sik Hong; Hyuk-Sang Kwon

2014-10-28T23:59:59.000Z

171

Sacrificial Protective Coating Materials That Can Be Regenerated In-Situ to Enable High-Performance Membranes  

Broader source: Energy.gov [DOE]

Fact sheet describing project that will leverage research and materials from a previously developed, low-cost coating process and apply the research to lower cost polymer membranes

172

Synthesis and electrochemical performances of amorphous carbon-coated Sn-Sb particles as anode material for lithium-ion batteries  

SciTech Connect (OSTI)

The amorphous carbon coating on the Sn-Sb particles was prepared from aqueous glucose solutions using a hydrothermal method. Because the outer layer carbon of composite materials is loose cotton-like and porous-like, it can accommodate the expansion and contraction of active materials to maintain the stability of the structure, and hinder effectively the aggregation of nano-sized alloy particles. The as-prepared composite materials show much improved electrochemical performances as anode materials for lithium-ion batteries compared with Sn-Sb alloy and carbon alone. This amorphous carbon-coated Sn-Sb particle is extremely promising anode materials for lithium secondary batteries and has a high potentiality in the future use. - Graphical abstract: The amorphous carbon coating on the Sn-Sb particles was prepared from aqueous glucose solutions using a hydrothermal method. Because the outer layer carbon of composite materials is loose cotton-like and porous-like, it can accommodate the expansion and contraction of active materials to maintain the stability of the structure, and hinder effectively the aggregation of nano-sized alloy particles.

Wang Zhong [State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871 (China); General Research Institute for Nonferrous Metal, Beijing 100088 (China); Tian Wenhuai [Department of Materials Physics and Chemistry, University of Science and Technology Beijing, Beijing 100083 (China); Liu Xiaohe [Department of Inorganic Materials, Central South University, Changsha, Hunan 410083 (China); Yang Rong [State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871 (China); Li Xingguo [State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871 (China)], E-mail: xgli@pku.edu.cn

2007-12-15T23:59:59.000Z

173

Magnetic moment of the negative muon  

Science Journals Connector (OSTI)

The most accurate value of the negative-muon magnetic moment, ??-=3.183 345(10)?p, is obtained by combining the negative-muon mass from x-ray transitions in muonic atoms and the reanalyzed negative-muon g factor with the proton magnetic moment in Bohr magnetons. The fractional uncertainty of 3.110-6 is 15 times more accurate than any previous direct measurement. The obtained ratio of the magnetic moments of the positive muon and the negative muon, ??+/??-=1.000 000 2(31), provides a test of CPT invariance at the level of 3 ppm. The negative-muon g factor g?- and the magnetic moment anomaly a?- derived for a test of CPT theorem are obtained from an approach now made possible using the new value of the negative-muon magnetic moment. To substantially improve the verification of the CPT theorem for the muon g factor, a much more precise value for ??-/?p is needed to determine the anomalous g factor a?- for the new Brookhaven National Laboratory muon g-2 experiment.

X. Fei

1994-02-01T23:59:59.000Z

174

Molecular CP-violating magnetic moment Andrei Derevianko1  

E-Print Network [OSTI]

Molecular CP-violating magnetic moment Andrei Derevianko1 and M. G. Kozlov2 1 Department of Physics Received 26 April 2005; published 6 October 2005 A concept of CP-violating T,P-odd permanent molecular magnetic moments CP is introduced. We relate the moments to the electric dipole moment of electron e

Kozlov, Mikhail G

175

The Nuclear Moments of Se79  

Science Journals Connector (OSTI)

Microwave measurements of the J=2?3 rotational transition of OCSe containing the radioactive-nucleus Se79 have established the Se79 spin as 72 and the Se79 quadrupole moment as 0.710-24 cm220 percent. The quadrupole coupling constant eqQ is 752.090.05 Mc/sec. The magnetic moment of Se79 has been determined as -1.0150.015 nuclear magnetons by observation of the Zeeman splitting of one hyperfine component. The 72 spin and the large positive Q are inconsistent with the single-particle nuclear-shell model, but suggest the configuration (g92)272. This assignment is substantiated by the negative magnetic moment.Measurement of isotopic shifts gives a value for the Se79 mass, and an odd-even mass difference of 2.4 millimass units for this nucleus.

W. A. Hardy; G. Silvey; C. H. Townes; B. F. Burke; M. W. P. Strandberg; George W. Parker; Victor W. Cohen

1953-12-15T23:59:59.000Z

176

Neutron Electric Dipole Moment at Fixed Topology  

E-Print Network [OSTI]

We describe the finite volume effects of CP-odd quantities, such as the neutron electric dipole moment and the anapole moment in the $\\theta$-vacuum, under different topological sectors. We evaluate the three-point Green's functions for the electromagnetic current in a fixed non-trivial topological sector in order to extract these CP-odd observables. We discuss the role of zero modes in the CP-odd Green's function and show that, in the quenched approximation, there is a power divergence in the quark mass for CP-odd quantities at finite volume.

Keh-Fei Liu

2008-07-09T23:59:59.000Z

177

Nonparametric Tests of Moment Condition Stability  

E-Print Network [OSTI]

are interested in whether or not ? is constant. To reformulate it into an inference problem of moment stability, let zt = (yt , x#4;t )#4; and m(zt ,?) = ( yt ? x#4;t ? ) xt . Then, under the null hypothesis that ? is constant, the moment condition (2.1) holds... for all t . Otherwise, for any vector ? of constants, E(m(zt ,?)) #5;= 0 for some nonnegligible fraction of the sample. Most studies in the literature consider the case where the distribution of xt is assumed to be stationary. Furthermore, we may allow...

Juhl, Ted P.; Xiao, Zhijie

2013-02-01T23:59:59.000Z

178

A Novel Resonant Metallo-Dielectric Structure for Design ofHigh Performance -,U Meta-Materials  

E-Print Network [OSTI]

-material with periodic configuration constructed of small size metallo-dielectric transmission-line resonators magnetically coupled to transmission line model of the medium. It is demonstrated that the permeability resonant transmission line sectors. Compared to the loop circuit configuration, the inclusions (metalo

Sarabandi, Kamal

179

Electric Dipole Moments of Dyon and `Electron'  

E-Print Network [OSTI]

The electric and magnetic dipole moments of dyon fermions are calculated within N=2 supersymmetric Yang-Mills theory including the theta-term. It is found, in particular, that the gyroelectric ratio deviates from the canonical value of 2 for the monopole fermion (n_m=1,n_e=0) in the case theta\

Makoto Kobayashi; Taichiro Kugo; Tatsuya Tokunaga

2008-01-08T23:59:59.000Z

180

Neutron Electric Dipole Moment Matt Eichenfield  

E-Print Network [OSTI]

Neutron Electric Dipole Moment (NEDM) Matt Eichenfield 04/20/2007 #12;P and T Violations EDM to explain the Baryonic asymmetry of the universe #12;The Neutron's Constituents Three quarks Two down (q d neutron radius, the separation causing the SM NEDM

Golwala, Sunil

Note: This page contains sample records for the topic "momentive performance materials" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
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We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

Nonstandard neutrino interactions and transition magnetic moments  

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

We constrain generic nonstandard neutrino interactions with existing experimental data on neutrino transition magnetic moments and derive strong bounds on tensorial couplings of neutrinos to charged fermions. We also discuss how some of these tensorial couplings can be constrained by other experiments, e.g., on neutrino-electron and neutrino-nucleus scattering.

Healey, Kristopher J.; Petrov, Alexey A.; Zhuridov, Dmitry

2013-06-01T23:59:59.000Z

182

Task and Machine Heterogeneities: Higher Moments Matter  

E-Print Network [OSTI]

Task and Machine Heterogeneities: Higher Moments Matter Abdulla M. Al-Qawasmeh 1 , Anthony A.potter}@colostate.edu jtsmith@digitalglobe.com Abstract - One type of heterogeneous computing (HC) systems consists of machines in this matrix represents the ETC of a specific task on a specific machine when executed exclusively. Heuristics

Maciejewski, Anthony A.

183

High-Performance Corrosion-Resistant Materials: Iron-Based Amorphous-Metal Thermal-Spray Coatings: SAM HPCRM Program ? FY04 Annual Report ? Rev. 0 - DARPA DSO & DOE OCRWM Co-Sponsored Advanced Materials Program  

SciTech Connect (OSTI)

The multi-institutional High Performance Corrosion Resistant Materials (HPCRM) Team is cosponsored by the Defense Advanced Projects Agency (DARPA) Defense Science Office (DSO) and the Department of Energy (DOE) Office of Civilian Radioactive Waste Management (OCRWM), and has developed new corrosion-resistant, iron-based amorphous metals that can be applied as coatings with advanced thermal spray technology. Two compositions have corrosion resistance superior to wrought nickel-based Alloy C-22 (UNS No. N06022) in very aggressive environments, including concentrated calcium-chloride brines at elevated temperature. Corrosion costs the Department of Defense billions of dollars every year, with an immense quantity of material in various structures undergoing corrosion. For example, in addition to fluid and seawater piping, ballast tanks, and propulsions systems, approximately 345 million square feet of structure aboard naval ships and crafts require costly corrosion control measures. The use of advanced corrosion-resistant materials to prevent the continuous degradation of this massive surface area would be extremely beneficial. The Fe-based corrosion-resistant, amorphous-metal coatings under development may prove of importance for applications on ships. Such coatings could be used as an 'integral drip shield' on spent fuel containers, as well as protective coatings that could be applied over welds, thereby preventing exposure to environments that might cause stress corrosion cracking. In the future, such new high-performance iron-based materials could be substituted for more-expensive nickel-based alloys, thereby enabling a reduction in the $58-billion life cycle cost for the long-term storage of the Nation's spent nuclear fuel by tens of percent.

Farmer, J; Haslam, J; Wong, F; Ji, S; Day, S; Branagan, D; Marshall, M; Meacham, B; Buffa, E; Blue, C; Rivard, J; Beardsley, M; Buffa, E; Blue, C; Rivard, J; Beardsley, M; Weaver, D; Aprigliano, L; Kohler, L; Bayles, R; Lemieux, E; Wolejsza, T; Martin, F; Yang, N; Lucadamo, G; Perepezko, J; Hildal, K; Kaufman, L; Heuer, A; Ernst, F; Michal, G; Kahn, H; Lavernia, E

2007-09-19T23:59:59.000Z

184

High-performance tin oxide-nitrogen doped graphene aerogel hybrids as anode materials for lithium-ion batteries  

Science Journals Connector (OSTI)

Abstract Tin dioxide nanoparticles on nitrogen doped graphene aerogel (SnO2-NGA) hybrid are synthesized by one-step hydrothermal method and successfully applied in lithium-ion batteries as a free-standing anode. The electrochemical performance of SnO2-NGA hybrid is investigated by galvanostatic chargedischarge cycling, rate capability test, cyclic voltammetry and electrochemical impedance spectroscopy. It is found that the SnO2-NGA hybrid with freestanding spongy-like structure exhibit remarkable lithium storage capacity (1100mAhg?1 after 100 cycles), good cycling stability and high rate capability. The outstanding performance is attributed to the uniform SnO2 nanoparticles, unique spongy-like structure and N doping defect for Li+ diffusion.

Chunhui Tan; Jing Cao; Abdul Muqsit Khattak; Feipeng Cai; Bo Jiang; Gai Yang; Suqin Hu

2014-01-01T23:59:59.000Z

185

HIGH-PERFORMANCE COMPUTING FOR THE STUDY OF EARTH AND ENVIRONMENTAL SCIENCE MATERIALS USING SYNCHROTRON X-RAY COMPUTED MICROTOMOGRAPHY.  

SciTech Connect (OSTI)

Synchrotron x-ray computed microtomography (CMT) is a non-destructive method for examination of rock, soil, and other types of samples studied in the earth and environmental sciences. The high x-ray intensities of the synchrotron source make possible the acquisition of tomographic volumes at a high rate that requires the application of high-performance computing techniques for data reconstruction to produce the three-dimensional volumes, for their visualization, and for data analysis. These problems are exacerbated by the need to share information between collaborators at widely separated locations over both local and tide-area networks. A summary of the CMT technique and examples of applications are given here together with a discussion of the applications of high-performance computing methods to improve the experimental techniques and analysis of the data.

FENG,H.; JONES,K.W.; MCGUIGAN,M.; SMITH,G.J.; SPILETIC,J.

2001-10-12T23:59:59.000Z

186

Effects of fluorine substitution on the electrochemical performance of layered Li-excess nickel manganese oxides cathode materials for lithium-ion batteries  

Science Journals Connector (OSTI)

Abstract Li[Li1/6Ni1/4Mn7/12]O2?xFx (x=0, 0.025, 0.05, 0.075, 0.1) as the cathode materials for rechargeable lithium batteries have been synthesized via the co-precipitation method followed by a high-temperature solid-state reaction. Field emission scanning electron microscopy images exhibit that fluorine substitution catalyzes the growth of the primary particles. Although the initial discharge capacity decreases as the fluorine content increasing, the fluorine substituted materials present significant improvement in the cycling performance. Among the synthesized materials, Li[Li1/6Ni1/4Mn7/12]O1.95F0.05 exhibits excellent high temperature (50C) cycling performance with a capacity retention of 93.7% after 30 cycles while the bare Li[Li1/6Ni1/4Mn7/12]O2 cathode exhibited only 73.7%.

Hongxiao Li; Li-Zhen Fan

2013-01-01T23:59:59.000Z

187

In search of high performance anode materials for Mg batteries: computational studies of Mg in Ge, Si, and Sn  

E-Print Network [OSTI]

We present ab initio studies of structures, energetics, and diffusion properties of Mg in Si, Ge, and Sn diamond structures to evaluate their potential as insertion type anode materials for Mg batteries. We show that Si could provide the highest specific capacities (3817 mAh g-1) and the lowest average insertion voltage (~0.15 eV vs. Mg) for Mg storage. Nevertheless, due to its significant percent lattice expansion (~216%) and slow Mg diffusion, Sn and Ge are more attractive; both anodes have lower lattice expansions (~120 % and ~178 %, respectively) and diffusion barriers (~0.50 and ~0.70 eV, respectively for single-Mg diffusion) than Si. We show that Mg-Mg interactions at different stages of charging can decrease significantly the diffusion barrier compared to the single atom diffusion, by up to 0.55 eV.

Malyi, Oleksandr I; Manzhos, Sergei; 10.1016/j.jpowsour.2013.01.114

2013-01-01T23:59:59.000Z

188

Magnetic moments of long isotopic chains  

E-Print Network [OSTI]

Dipole magnetic moments of several long isotopic chains are analyzed within the self-consistent Finite Fermi System theory based on the Generalized Energy Density Functional method with exact account for the pairing and quasi-particle continuum. New data for nuclei far from the beta-stability valley are included in the analysis. For a number of semi-magic isotopes of the tin and lead chains a good description of the data is obtained, with accuracy of 0.1 - 0.2 mu_N. A chain of non-magic isotopes of copper is also analyzed in detail. It is found that the systematic analysis of magnetic moments of this long chain yields rich information on the evolution of the nuclear structure of the Cu isotopes. In particular, it may give a signal of deformation for the ground state of some nuclei in the chain.

I. N. Borzov; E. E. Saperstein; S. V. Tolokonnikov; G. Neyens; N. Severijns

2008-04-28T23:59:59.000Z

189

Magnetic Moment of the Positive Muon  

Science Journals Connector (OSTI)

The magnetic moment of the positive muon has been redetermined in terms of proton moments using a precession technique. The sensitivity achieved yields an error of 13 parts per million. The muons are stopped in various targets in a homogeneous magnetic field. The anisotropic distribution of the decay electrons relative to the muon spin direction permits the measurement of the spin precession frequency. The proton spin resonance is measured in the same field, yielding f?fp=3.183380.00004. This result may be combined with that of other experiments, the muon g factor, and the ratio of electron cyclotron frequency to proton resonance, fefp, to obtain a more precise evaluation of the muon mass in terms of electron masses. m?me equals 206.7650.005.

David P. Hutchinson; Jack Menes; G. Shapiro; A. M. Patlach

1963-08-01T23:59:59.000Z

190

Electric dipole moment of light nuclei  

SciTech Connect (OSTI)

We examine the sensitivity of the deuteron Electric Dipole Moment (EDM) to variation in the nucleon-nucleon interaction. In particular, we write the EDM as a sum of two terms, one depends on the target wave function, the second on intermediate multiple scattering states in the {sup 3}P{sub 1} channel. This second contribution is sensitive to off-shell behavior of the {sup 3}P{sub 1} amplitude.

Afnan, Iraj R. [School of Chemical and Physical Sciences, Flinders University, GPO Box 2100, Adelaide 5001 (Australia); Gibson, Benjamin F. [Theoretical Division, Los Alamos National Laboratory, Los Alamos, NM 87545 (United States)

2010-07-27T23:59:59.000Z

191

Secretary Chu and the 'Sputnik Moment' | Department of Energy  

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

'Sputnik Moment' Addthis Description U.S. Secretary of Energy Steven Chu speaks about China and the Sputnik Moment in US energy Policy at the National Press Club. Remarks...

192

BOOSTED BINARY AUDIO FINGERPRINT BASED ON SPECTRAL SUBBAND MOMENTS Sungwoong Kim and Chang D. Yoo  

E-Print Network [OSTI]

BOOSTED BINARY AUDIO FINGERPRINT BASED ON SPECTRAL SUBBAND MOMENTS Sungwoong Kim and Chang D. Yoo@kaist.ac.kr, cdyoo@ee.kaist.ac.kr ABSTRACT An audio fingerprinting system identifies an audio based on a unique feature vector called the audio fingerprint. The performance of an audio fingerprinting system is directly

Yoo, Chang D.

193

Li3V2(PO4)3/graphene nanocomposite as a high performance cathode material for lithium ion battery  

Science Journals Connector (OSTI)

Abstract In this work, pure LVP nanoparticles and an LVP/graphene nanocomposite are successfully synthesized by a simple and cost effective polyol based solvothermal method, which can be easily scaled up. The synthesized nanocomposite contained small (3060nm) LVP nanoparticles completely and uniformly anchored on reduced graphene nanosheets. As a cathode for lithium ion batteries, the nanocomposite electrode delivered high reversible lithium storage capacity (189.8mAhg?1 at 0.1C), superior cycling stability (111.8mAhg?1 at 0.1C, 112.6mAhg?1 at 5C, and 103.4mAhg?1 at 10C after 80 cycles) and better C-rate capability (90.8mAhg?1 at 10C), whereas the pure LVP nanoparticles electrode delivered much less capacity at all investigated current rates. The enhanced electrochemical performance of the nanocomposite electrode can be attributed to the synergistic interaction between the uniformly dispersed LVP nanoparticles and the graphene nanosheets, which offers a large number of accessible active sites for the fast diffusion of Li ions, low internal resistance, high conductivity and more importantly, accommodates the large volume expansion/contraction during cycling.

Alok Kumar Rai; Trang Vu Thi; Jihyeon Gim; Sungjin Kim; Jaekook Kim

2015-01-01T23:59:59.000Z

194

LiMn{sub 2}O{sub 4} nanoparticles anchored on graphene nanosheets as high-performance cathode material for lithium-ion batteries  

SciTech Connect (OSTI)

Nanocrystalline LiMn{sub 2}O{sub 4}/graphene nanosheets nanocomposite has been successfully synthesized by a one-step hydrothermal method without post-heat treatment. In the nanocomposite, LiMn{sub 2}O{sub 4} nanoparticles of 1030 nm in size are well crystallized and homogeneously anchored on the graphene nanosheets. The graphene nanosheets not only provide a highly conductive matrix for LiMn{sub 2}O{sub 4} nanoparticles but also effectively reduce the agglomeration of LiMn{sub 2}O{sub 4} nanoparticles. The nanocrystalline LiMn{sub 2}O{sub 4}/graphene nanosheets nanocomposite exhibited greatly improved electrochemical performance in terms of specific capacity, cycle performance, and rate capability compared with the bare LiMn{sub 2}O{sub 4} nanoparticles. The superior electrochemical performance of the nanocrystalline LiMn{sub 2}O{sub 4}/graphene nanosheets nanocomposite makes it promising as cathode material for high-performance lithium-ion batteries. - Graphical abstract: Nanocrystalline LiMn{sub 2}O{sub 4}/graphene nanosheets (GNS) nanocomposite exhibit superior cathode performance for lithium-ion batteries compared to the bare LiMn{sub 2}O{sub 4} nanoparticles. Display Omitted - Highlights: LiMn{sub 2}O{sub 4}/graphene nanocomposite is synthesized by a one-step hydrothermal method. LiMn{sub 2}O{sub 4} nanoparticles are uniformly anchored on the graphene nanosheets. The nanocomposite exhibits excellent cathode performance for lithium-ion batteries.

Lin, Binghui; Yin, Qing; Hu, Hengrun; Lu, Fujia [School of Materials Science and Engineering, Nanjing University of Science and Technology, Xiaolingwei 200, Nanjing, Jiangsu 210094 (China); Xia, Hui, E-mail: xiahui@njust.edu.cn [School of Materials Science and Engineering, Nanjing University of Science and Technology, Xiaolingwei 200, Nanjing, Jiangsu 210094 (China); Herbert Gleiter Institute of Nanoscience, Nanjing University of Science and Technology, Nanjing 210094 (China)

2014-01-15T23:59:59.000Z

195

Static quadrupole moment of high-spin isomers in the doubly-odd Fr214 nucleus  

Science Journals Connector (OSTI)

We have determined the spectroscopic quadrupole moment of two high-spin isomers (I=11 ? and I=32 ?) which have recently been identified in the doubly-odd Fr214 nucleus. The data have been extracted from a series of former level mixing spectroscopy (LEMS) measurements which had been performed to measure quadrupole moments of high-spin isomers in Fr211,212,213 isotopes. The quadrupole frequencies were measured in natural and enriched poly- and single-crystalline T1 at different temperatures.

G. Neyens; I. Van Asbroeck; R. Coussement

1995-06-01T23:59:59.000Z

196

Magnetic Moment of the Positive Muon  

Science Journals Connector (OSTI)

The magnetic moment of the positive muon has been measured relative to that of the proton by determining its precession frequency in a magnetic field measured by proton NMR. With both protons and muons bound in a spherical sample of water, the result is ????p?=3.183 3620.000 030 (9.4 ppm). Including uncertainties due to the chemical environment of the muon, the result for free muons and protons is ???p=3.183 3300.000 044 (14 ppm) which is consistent with recent measurements of the hyperfine splitting of muonium.

D. P. Hutchinson; F. L. Larsen; N. C. Schoen; D. I. Sober; A. S. Kanofsky

1970-06-01T23:59:59.000Z

197

Electric Transition Dipole Moment in pre-Born-Oppenheimer Molecular Structure Theory  

E-Print Network [OSTI]

This paper presents the calculation of the electric transition dipole moment in a pre-Born-Oppenheimer framework. Electrons and nuclei are treated equally in terms of the parametrization of the non-relativistic total wave function, which is written as a linear combination of basis functions constructed with explicitly correlated Gaussian functions and the global vector representation. The integrals of the electric transition dipole moment are derived corresponding to these basis functions in both the length and the velocity representation. The complete derivation and the calculations are performed in laboratory-fixed Cartesian coordinates without relying on coordinates which separate the center of mass from the translationally invariant degrees of freedom. The effect of the overall motion is eliminated via translationally invariant integral expressions. As a numerical example the electric transition dipole moment is calculated between two rovibronic levels of the H2 molecule assignable to the lowest rovibrati...

Simmen, Benjamin; Reiher, Markus

2014-01-01T23:59:59.000Z

198

Theoretical and Experimental Thermal Performance Analysis of Building Shell Components Containing Blown Fiber Glass Insulation Enhanced with Phase Change Material (PCM)  

SciTech Connect (OSTI)

Different types of Phase Change Materials (PCMs) have been tested as dynamic components in buildings during the last 4 decades. Most historical studies have found that PCMs enhance building energy performance. Some PCM-enhanced building materials, like PCM-gypsum boards or PCM-impregnated concretes have already found their limited applications in different countries. Today, continued improvements in building envelope technologies suggest that throughout Southern and Central US climates, residences may soon be routinely constructed with PCM in order to maximize insulation effectiveness and maintain low heating and cooling loads. The proposed paper presents experimental and numerical results from thermal performance studies. These studies focus on blown fiber glass insulation modified with a novel spray-applied microencapsulated PCM. Experimental results are reported for both laboratory-scale and full-size building elements tested in the field. In order to confirm theoretical predictions, PCM enhanced fiber glass insulation was evaluated in a guarded hot box facility to demonstrate heat flow reductions when one side of a test wall is subjected to a temperature increase. The laboratory work showed reductions in heat flow of 30% due to the presence of approximately 20 wt % PCM in the insulation. Field testing of residential attics insulated with blown fiber glass and PCM was completed in Oak Ridge, Tennessee. Experimental work was followed by detailed whole building EnergyPlus simulations in order to generate energy performance data for different US climates. In addition, a series of numerical simulations and field experiments demonstrated a potential for application of a novel PCM fiber glass insulation as enabling technology to be utilized during the attic thermal renovations.

Miller, William A [ORNL] [ORNL; Kosny, Jan [ORNL] [ORNL; Yarbrough, David W [ORNL] [ORNL; Childs, Phillip W [ORNL] [ORNL; Shrestha, Som S [ORNL] [ORNL; Atchley, Jerald Allen [ORNL] [ORNL; Bianchi, Marcus V [ORNL] [ORNL; Smith, John B [ORNL] [ORNL; Fellinger, Thomas [ORNL] [ORNL; Kossecka, Elizabeth [Institute of Fundamental Technological Research, Polish Academy of Sciences] [Institute of Fundamental Technological Research, Polish Academy of Sciences; Lee, Edwin S [ORNL] [ORNL

2010-01-01T23:59:59.000Z

199

Performance-oriented packaging: A guide to identifying and designing. Identifying and designing hazardous materials packaging for compliance with post HM-181 DOT Regulations  

SciTech Connect (OSTI)

With the initial publication of Docket HM-181 (hereafter referred to as HM-181), the U.S. Department of Energy (DOE), Headquarters, Transportation Management Division decided to produce guidance to help the DOE community transition to performance-oriented packagings (POP). As only a few individuals were familiar with the new requirements, elementary guidance was desirable. The decision was to prepare the guidance at a level easily understood by a novice to regulatory requirements. This document identifies design development strategies for use in obtaining performance-oriented packagings that are not readily available commercially. These design development strategies will be part of the methodologies for compliance with post HM-181 U.S. Department of Transportation (DOT) packaging regulations. This information was prepared for use by the DOE and its contractors. The document provides guidance for making decisions associated with designing performance-oriented packaging, and not for identifying specific material or fabrication design details. It does provide some specific design considerations. Having a copy of the regulations handy when reading this document is recommended to permit a fuller understanding of the requirements impacting the design effort. While this document is not written for the packaging specialist, it does contain guidance important to those not familiar with the new POP requirements.

Not Available

1994-08-01T23:59:59.000Z

200

Tracing the geometry around a massive, axisymmetric body to measure, through gravitational waves, its mass moments and electromagnetic moments  

E-Print Network [OSTI]

The geometry around a rotating massive body, which carries charge and electrical currents, could be described by its multipole moments (mass moments, mass-current moments, electric moments, and magnetic moments). When a small body is orbiting this massive body, it will move on geodesics, at least for a time interval that is short with respect to the characteristic time of the binary due to gravitational radiation. By monitoring the waves emitted by the small body we are actually tracing the geometry of the central object, and hence, in principle, we can infer all its multipole moments. This paper is a generalization of previous similar results by Ryan. The fact that the electromagnetic moments of spacetime can be measured demonstrates that one can obtain information about the electromagnetic field purely from gravitational wave analysis. Additionally, these measurements could be used as a test of the no-hair theorem for black holes.

T. P. Sotiriou; T. A. Apostolatos

2004-10-25T23:59:59.000Z

Note: This page contains sample records for the topic "momentive performance materials" 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

First Name Last Name Title Company Email David Alman Director-Material Performance Division National Energy Technology Laboratory david.alman@netl.doe.gov  

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

Technologies Collaborative National Conference - June 10, 2013 - Attendees Technologies Collaborative National Conference - June 10, 2013 - Attendees First Name Last Name Title Company Email David Alman Director-Material Performance Division National Energy Technology Laboratory david.alman@netl.doe.gov Tim Avampato Program Manager Eaton timjavampato@eaton.com Sharon Beermann-Curtin Program Officer Office of Naval Research sharon.beermanncurti@navy.mil Seth Blumsack Associate Professor Pennsylvania State University sab51@psu.edu Phil Bolin Chief Engineer Power Systems Group Mitsubishi Electric Power Products, Inc. phil.bolin@meppi.com Dushan Boroyevich Professor. Co-Director Virginia Tech - CPES mhawthor@vt.edu Steve Bossart Senior Analyst National Energy Technology Laboratory steven.bossart@netl.doe.gov Gary Bowers Commercial-Industrial Director S&C Electric Company gary.bowers@sandc.com

202

WAFER TEST CAVITY -Linking Surface Microstructure to RF Performance: a Short-?Sample Test Facility for characterizing superconducting materials for SRF cavities.  

SciTech Connect (OSTI)

The Wafer Test cavity was designed to create a short sample test system to determine the properties of the superconducting materials and S?I?S hetero?structures. The project, funded by ARRA, was successful in accomplishing several goals to achieving a high gradient test system for SRF research and development. The project led to the design and construction of the two unique cavities that each severed unique purposes: the Wafer test Cavity and the Sapphire Test cavity. The Sapphire Cavity was constructed first to determine the properties of large single crystal sapphires in an SRF environment. The data obtained from the cavity greatly altered the design of the Wafer Cavity and provided the necessary information to ascertain the Wafer Test cavitys performance.

Pogue, Nathaniel; Comeaux, Justin; McIntyre, Peter

2014-05-30T23:59:59.000Z

203

A ternary phased SnO2-Fe2O3/SWCNTs nanocomposite as a high performance anode material for lithium ion batteries  

Science Journals Connector (OSTI)

Abstract A new SnO2-Fe2O3/SWCNTs (single-walled carbon nanotubes) ternary nanocomposite was first synthesized by a facile hydrothermal approach. SnO2 and Fe2O3 nanoparticles (NPs) were homogeneously located on the surface of SWCNTs, as confirmed by X-ray diffraction (XRD), transmission electron microscope (TEM) and energy dispersive X-ray spectroscopy (EDX). Due to the synergistic effect of different components, the as synthesized SnO2-Fe2O3/SWCNTs composite as an anode material for lithium-ion batteries exhibited excellent electrochemical performance with a high capacity of 692 mAhg?1 which could be maintained after 50 cycles at 200 mAg?1. Even at a high rate of 2000 mAg?1, the capacity was still remained at 656 mAhg?1.

Wangliang Wu; Yi Zhao; Jiaxin Li; Chuxin Wu; Lunhui Guan

2014-01-01T23:59:59.000Z

204

Lightweight high performance ceramic material  

DOE Patents [OSTI]

A sintered ceramic composition includes at least 50 wt. % boron carbide and at least 0.01 wt. % of at least one element selected from the group consisting of Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy Ho, Er, Tm, Yb, and Lu, the sintered ceramic composition being characterized by a density of at least 90% of theoretical density.

Nunn, Stephen D [Knoxville, TN

2008-09-02T23:59:59.000Z

205

Induced dipole-moment function of HD  

Science Journals Connector (OSTI)

The induced dipole-moment function for a pair of HD molecules contains components having different angular symmetries from those occurring for pairs of homonuclear molecules, H2 or D2. These additional components arise from a coordinate transformation from the vector describing the separation between the centers of interaction to the vector describing the separation between the centers of mass. By use of a Taylor-series expansion, general expressions for the first-order shifted components for both multipolar and overlap induction mechanisms, and specific results for higher-order multipole-induced shifted components, are given. The importance of these additional components for the calculation of the intensities of zero-phonon transitions in solid HD is illustrated by several examples, and predicted intensities for the strongest unmeasured transitions are given.

J. D. Poll; M. Attia; R. H. Tipping

1989-06-01T23:59:59.000Z

206

A Novel Method to Improve the Electrochemical Performance of LiMn2O4 Cathode Active Material by CaCO3 Surface Coating  

Science Journals Connector (OSTI)

Spinel LiMn2O4 was synthesized by glycine-nitrate method and coated with CaCO3 in order to enhance the electrochemical performance at room temperature (25C) and 55C. The uncoated and CaCO3-coated LiMn2O4 materials were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and electrochemical tests. XRD and SEM results indicated that CaCO3 particles encapsulated the surface of the LiMn2O4 without causing any structural change. The charge-discharge tests showed that the specific discharge capacity fade of pristine electrode at 25 and 55C were 25.5% and 52%, respectively. However, surface modified cathode shows 7.4% and 29.5% loss compared to initial specific discharge capacity at 70th cycle for 25 and 55C, respectively. The improvement of electrochemical performance is attributed to suppression of Mn2+ dissolution into electrolyte via CaCO3 layer.

Halil ?ahan; Hseyin Gktepe; ?aban Patat

2011-01-01T23:59:59.000Z

207

Decuplet baryon magnetic moments in the chiral quark model  

Science Journals Connector (OSTI)

We present calculations of the decuplet baryon magnetic moments in the chiral quark model. As input we use parameters obtained in qualitatively accurate fits to the octet baryon magnetic moments studied previously. The values found for the magnetic moments of ?++ and ?- are in good agreement with experiments. We finally calculate the total quark spin polarizations of the decuplet baryons and find that they are considerably smaller than what is expected from the non-relativistic quark model.

Johan Linde; Tommy Ohlsson; Hkan Snellman

1998-05-01T23:59:59.000Z

208

RECENT RESULTS ABOUT MOMENT PROBLEMS1 Christian Berg  

E-Print Network [OSTI]

Christian Berg Dept. of Mathematics, University of Copenhagen;2 CHRISTIAN BERG In the fundamental work of Hamburger [19] the theory of the moment problem was extended

Berg, Christian

209

Nuclear moment of inertia and spin distribution of nuclear levels  

Science Journals Connector (OSTI)

We introduce a simple model to calculate the nuclear moment of inertia at finite temperature. This moment of inertia describes the spin distribution of nuclear levels in the framework of the spin-cutoff model. Our model is based on a deformed single-particle Hamiltonian with pairing interaction and takes into account fluctuations in the pairing gap. We derive a formula for the moment of inertia at finite temperature that generalizes the Belyaev formula for zero temperature. We show that a number-parity projection explains the strong odd-even effects observed in shell model Monte Carlo studies of the nuclear moment of inertia in the iron region.

Y. Alhassid; G. F. Bertsch; L. Fang; S. Liu

2005-12-29T23:59:59.000Z

210

CFD Combustion Modeling with Conditional Moment Closure using Tabulated Chemistry  

Broader source: Energy.gov [DOE]

A method is presented that allows for efficient conditional moment closure combustion simulations through the use of a progress variable based parameterization of the combustion chemistry.

211

Chemomechanics of calcium leaching of cement-based materials at different scales : the role of CH-dissolution and C-S-H degradation on strength and durability performance of materials and structures  

E-Print Network [OSTI]

Calcium leaching is a durability threat for cement-based materials employed in critical infrastructures, such as Nuclear Waste Storage Systems. This thesis presents a comprehensive study of the material and structural ...

Heukamp, Franz H. (Franz Hoyte), 1973-

2003-01-01T23:59:59.000Z

212

Rational Material Architecture Design for Better Energy Storage  

E-Print Network [OSTI]

platform for high performance energy materials. Furtherplatform for high performance energy materials. Furthernew family of high-performance energy materials with desired

Chen, Zheng

2012-01-01T23:59:59.000Z

213

Self-excited vibrations in turning: cutting moment analysis  

E-Print Network [OSTI]

This work aims at analysing the moment effects at the tool tip point and at the central axis, in the framework of a turning process. A testing device in turning, including a six-component dynamometer, is used to measure the complete torsor of the cutting actions in the case of self-excited vibrations. Many results are obtained regarding the mechanical actions torsor. A confrontation of the moment components at the tool tip and at the central axis is carried out. It clearly appears that analysing moments at the central axis avoids the disturbances induced by the transport of the moment of the mechanical actions resultant at the tool tip point. For instance, the order relation between the components of the forces is single. Furthermore, the order relation between the moments components expressed at the tool tip point is also single and the same one. But at the central axis, two different order relations regarding moments are conceivable. A modification in the rolling moment localization in the (y, z) tool plan is associated to these two order relations. Thus, the moments components at the central axis are particularly sensitive at the disturbances of machining, here the self-excited vibrations.

Olivier Cahuc; Jean-Yves K'Nevez; Alain Grard; Philippe Darnis; Gatan Albert; Claudiu F. Bisu; Cline Grard

2010-07-06T23:59:59.000Z

214

Electron Electric Dipole Moment induced by Octet-Colored Scalars  

E-Print Network [OSTI]

An appended sector of two octet-colored scalars, each an electroweak doublet, is an interesting extension of the simple two Higgs doublet model motivated by the minimal flavor violation. Their rich CP violating interaction gives rise to a sizable electron electric dipole moment, besides the quark electric dipole moment via the two-loop contribution of Barr-Zee mechanism.

Jae Ho Heo; Wai-Yee Keung

2007-12-31T23:59:59.000Z

215

Enhanced electrochemical performance of sulfur cathode by incorporation of a thin conductive adhesion layer between the current collector and the active material layer  

Science Journals Connector (OSTI)

In the typical electrode configuration, the active material layer is directly supported on a metallic ... collector. The interface between current collector and active material layer imposes additional charge tra...

Zhian Zhang; Zhiyong Zhang; Xiwen Wang; Jie Li

2014-05-01T23:59:59.000Z

216

ARM - Evaluation Product - Corrected Moments in Antenna Coordinates  

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

ProductsCorrected Moments in Antenna Coordinates ProductsCorrected Moments in Antenna Coordinates Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Evaluation Product : Corrected Moments in Antenna Coordinates Site(s) SGP TWP General Description Raw moments from the scanning ARM precipitation radars (SAPRs) are subject to a number of instrumental and atmospheric phenomena that must be retrieved and corrected for. The Corrected Moments in Antenna Coordinates (CMAC) value-added product contains both raw data and fields that have been processed to: · correct for velocity aliasing · unfold and generate a cross-polarimetric phase difference that is monotonically increasing, removing impulses caused by non-uniform beam filling and phase shift on backscatter · recalculate specific differential phase using a 20-point Sobel filter on

217

Nuclear Electric Dipole Moment of 3He  

SciTech Connect (OSTI)

A permanent electric dipole moment (EDM) of a physical system would require time-reversal (T) violation, which is equivalent to charge-conjugation-parity (CP) violation by CPT invariance. Experimental programs are currently pushing the limits on EDMs in atoms, nuclei, and the neutron to regimes of fundamental theoretical interest. Nuclear EDMs can be studied at ion storage rings with sensitivities that may be competitive with atomic and neutron measurements. Here we calculate the magnitude of the CP-violating EDM of {sup 3}He and the expected sensitivity of such a measurement to the underlying CP-violating interactions. Assuming that the coupling constants are of comparable magnitude for {pi}-, {rho}-, and {omega}-exchanges, we find that the pion-exchange contribution dominates. Finally, our results suggest that a measurement of the {sup 3}He EDM is complementary to the planned neutron and deuteron experiments, and could provide a powerful constraint for the theoretical models of the pion-nucleon P,T-violating interaction.

Stetcu, I; P.Liu, C; Friar, J L; Hayes, A C; Navratil, P

2008-04-08T23:59:59.000Z

218

The search for permanent electric dipole moments  

SciTech Connect (OSTI)

Permanent electric dipole moments (EDMs) of fundamental systems with spin - particles, nuclei, atoms or molecules violate parity and time reversal invariance. Invoking the CPT theorem, time reversal violation implies CP violation. Although CP-violation is implemented in the standard electro-weak theory, EDM generated this way remain undetectably small. However, this CP-violation also appears to fail explaining the observed baryon asymmetry of our universe. Extensions of the standard theory usually include new sources of CP violation and often predict sizeable EDMs. EDM searches in different systems are complementary and various efforts worldwide are underway and no finite value has been established yet. The prototype of an EDM search is the pursuit of the EDM of the neutron. It has the longest history and at the same time is at the forefront of present research. The talk aims at giving an overview of the field with emphasis on our efforts within an international collaboration at PSI, nedm.web.psi.ch.

Kirch, Klaus [PSI-Villigen - ETH Zrich

2013-02-13T23:59:59.000Z

219

Neutron electric dipole moment on the lattice  

E-Print Network [OSTI]

We carry out a feasibility study toward a lattice QCD calculation of the neutron electric dipole moment (NEDM) in the presence of the $\\theta$ term using two different approaches. In the first method, we calculate the CP-odd electromagnetic form factor $F_3$, which becomes the NEDM in the zero momentum transfer limit. At the first order in $\\theta$, we derive a formula connecting the lattice three-point function to the CP-odd electromagnetic form factor. In the second method we directly extract the NEDM from the energy difference between spin-up and spin-down neutron states in the presence of a constant electric field, without expanding a small but non-zero $\\theta$. We test both approaches numerically, employing the domain-wall quark action with the RG improved gauge action in quenched QCD at $a^{-1}\\simeq 2$ GeV on a $16^3\\times 32\\times 16$ lattice, and further applying the second method to the clover quark action at a similar lattice spacing and nucleon mass. We obtain good signals from both approaches. In particular the second method works well with both fermion formulations.

Eigo Shintani; S. Aoki; N. Ishizuka; K. Kanaya; Y. Kikukawa; Y. Kuramashi; M. Okawa; A. Ukawa; T. Yoshi

2005-09-26T23:59:59.000Z

220

Electric Dipole Moments in the MSSM Reloaded  

E-Print Network [OSTI]

We present a detailed study of the Thallium, neutron, Mercury and deuteron electric dipole moments (EDMs) in the CP-violating Minimal Supersymmetric extension of the Standard Model (MSSM). We take into account the complete set of one-loop graphs, the dominant Higgs-mediated two-loop diagrams, the complete CP-odd dimension-six Weinberg operator and the Higgs-mediated four-fermion operators. We improve upon earlier calculations by including the resummation effects due to CP-violating Higgs-boson mixing and to threshold corrections to the Yukawa couplings of all up- and down-type quarks and charged leptons. As an application of our study, we analyse the EDM constraints on the CPX, trimixing and Maximally CP- and Minimally Flavour-Violating (MCPMFV) scenarios. Cancellations may occur among the CP-violating contributions to the three measured EDMs arising from the 6 CP-violating phases in the MCPMFV scenario, leaving open the possibility of relatively large contributions to other CP-violating observables. The anal...

Ellis, Jonathan Richard; Pilaftsis, Apostolos

2008-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "momentive performance materials" 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

Electric Dipole Moments in the MSSM Reloaded  

E-Print Network [OSTI]

We present a detailed study of the Thallium, neutron, Mercury and deuteron electric dipole moments (EDMs) in the CP-violating Minimal Supersymmetric extension of the Standard Model (MSSM). We take into account the complete set of one-loop graphs, the dominant Higgs-mediated two-loop diagrams, the complete CP-odd dimension-six Weinberg operator and the Higgs-mediated four-fermion operators. We improve upon earlier calculations by including the resummation effects due to CP-violating Higgs-boson mixing and to threshold corrections to the Yukawa couplings of all up- and down-type quarks and charged leptons. As an application of our study, we analyse the EDM constraints on the CPX, trimixing and Maximally CP- and Minimally Flavour-Violating (MCPMFV) scenarios. Cancellations may occur among the CP-violating contributions to the three measured EDMs arising from the 6 CP-violating phases in the MCPMFV scenario, leaving open the possibility of relatively large contributions to other CP-violating observables. The analytic expressions for the EDMs are implemented in an updated version of the code CPsuperH2.0.

John Ellis; Jae Sik Lee; Apostolos Pilaftsis

2008-08-13T23:59:59.000Z

222

Combinational pixel-by-pixel and object-level classifying, segmenting, and agglomerating in performing quantitative image analysis that distinguishes between healthy non-cancerous and cancerous cell nuclei and delineates nuclear, cytoplasm, and stromal material objects from stained biological tissue materials  

DOE Patents [OSTI]

Quantitative object and spatial arrangement-level analysis of tissue are detailed using expert (pathologist) input to guide the classification process. A two-step method is disclosed for imaging tissue, by classifying one or more biological materials, e.g. nuclei, cytoplasm, and stroma, in the tissue into one or more identified classes on a pixel-by-pixel basis, and segmenting the identified classes to agglomerate one or more sets of identified pixels into segmented regions. Typically, the one or more biological materials comprises nuclear material, cytoplasm material, and stromal material. The method further allows a user to markup the image subsequent to the classification to re-classify said materials. The markup is performed via a graphic user interface to edit designated regions in the image.

Boucheron, Laura E

2013-07-16T23:59:59.000Z

223

Nanocomposites as thermoelectric materials  

E-Print Network [OSTI]

Thermoelectric materials have attractive applications in electric power generation and solid-state cooling. The performance of a thermoelectric device depends on the dimensionless figure of merit (ZT) of the material, ...

Hao, Qing

2010-01-01T23:59:59.000Z

224

Thermoelectrics Partnership: High Performance Thermoelectric...  

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

High Performance Thermoelectric Waste Heat Recovery System Based on Zintl Phase Materials with Embedded Nanoparticles Thermoelectrics Partnership: High Performance Thermoelectric...

225

High-order harmonic generation in atomic hydrogen at 248 nm: Dipole-moment versus acceleration spectrum  

E-Print Network [OSTI]

We present a study of the high-order harmonic-generation (HG) spectra of atomic hydrogen at 248 nm based on the Fourier transform of the expectation values of the induced dipole moment and acceleration. The calculations were performed by extending a...

Jiang, Tsin-Fu; Chu, Shih-I

1992-12-01T23:59:59.000Z

226

ARM - Evaluation Product - Mapped Moments to a Cartesian Grid  

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

ProductsMapped Moments to a Cartesian Grid ProductsMapped Moments to a Cartesian Grid Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Evaluation Product : Mapped Moments to a Cartesian Grid Site(s) SGP TWP General Description The Scanning ARM precipitation radars produce measurements of raw radar moments in antenna coordinates of range from and the azimuth and elevation of the antenna. Most numerical representations of the atmosphere tend to be in a Cartesian coordinate system using either height above mean sea level (or land surface in sigma coordinates) or pressure levels as a vertical scale. In addition to applying a correction for radar aliasing, correcting cross polarimetric phase difference for second trip returns and folding, recalculating specific differential phase (due to a configuration error on

227

On powers of Stieltjes moment sequences, II Christian Berg  

E-Print Network [OSTI]

On powers of Stieltjes moment sequences, II Christian Berg Department of Mathematics, University measure µ on [0, [ such that (1) holds; Email address: berg@math.ku.dk (Christian Berg). Preprint

Berg, Christian

228

RECENT RESULTS ABOUT MOMENT PROBLEMS 1 Christian Berg  

E-Print Network [OSTI]

RECENT RESULTS ABOUT MOMENT PROBLEMS 1 Christian Berg Dept. of Mathematics, University. Typeset by A M S­T E X 1 #12; 2 CHRISTIAN BERG In the fundamental work of Hamburger [19] the theory

Berg, Christian

229

The Anomalous Magnetic Moment of the Muon: A Theoretical Introduction  

Science Journals Connector (OSTI)

In February 2001, the Muon (g-2) Collaboration of the E821 experiment at the Brookhaven AGS released a new value of the anomalous magnetic moment of the muon a ? , mea...

Marc Knecht

2004-01-01T23:59:59.000Z

230

Standard Model Prediction of the Muon Anomalous Magnetic Moment  

E-Print Network [OSTI]

I review the present Standard Model prediction of the muon anomalous magnetic moment. The discrepancy with its experimental determination is (25.5 +- 8.0) x 10^-10, i.e., 3.2 standard deviations.

Joaquim Prades

2010-02-18T23:59:59.000Z

231

The muon anomalous magnetic moment, a view from the lattice  

E-Print Network [OSTI]

We review some of the issues that arise in attempts to compute the hadronic corrections to the muon anomalous magnetic moment using Lattice QCD. We concentrate on the dominant contribution, which requires an accurate evaluation of the hadronic vacuum polarization.

Christopher Aubin; Thomas Blum; Maarten Golterman; Kim Maltman; Santiago Peris

2013-11-21T23:59:59.000Z

232

Advanced Materials | ORNL  

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

the interface of electrodes and electrolytes and using supercomputers to predict how battery systems will perform. We develop "soft" materials, including polymers and...

233

Strong CP violation and the neutron electric dipole moment  

Science Journals Connector (OSTI)

We derive an identity that relates the fermion electric dipole moment from weak CP-violation effects to the strong CP parameter ?. In the absence of Peccei-Quinn-type symmetries, we find that requiring ? naturally small generally implies that, for a large class of models, the dominant contribution to the neutron electric dipole moment dn comes from strong CP violation rather than directly from weak CP-violation effects.

Jiang Liu; C. Q. Geng; John N. Ng

1989-08-07T23:59:59.000Z

234

Electric Dipole Moments of Neutron-Odd Nuclei  

E-Print Network [OSTI]

The electric dipole moments (EDMs) of neutron-odd nuclei with even protons are systematically evaluated. We first derive the relation between the EDM and the magnetic moment operators by making use of the core polarization scheme. This relation enables us to calculate the EDM of neutron-odd nuclei without any free parameters. From this calculation, one may find the best atomic system suitable for future EDM experiments.

Takehisa Fujita; Sachiko Oshima

2011-02-15T23:59:59.000Z

235

Novel theory of the HD dipole moment. I. Theory  

Science Journals Connector (OSTI)

A novel theory of the electric dipole moments of homopolar but isotopically asymmetric molecules (such as HD, HT, or DT) is formulated, such that electrical asymmetry and the resulting dipole moment arise as purely electronic properties within a suitable Born-Oppenheimer approximation, and nonadiabatic (rovibronic) perturbations play no part in the theory. It is shown thereby that a much simpler and more direct explanation for these dipole moments can be given than that invoking non- adiabatic perturbations: The dipole moment arises from isotopic variation of the local effective electronic reduced mass and its effects on binding energies and sizes of orbitals. It is an odd function of the isotopic splitting parameter ?0=(1/2)?m/?, where ?=(MA-MB)/(MA+MB) is the nuclear mass asymmetry for nuclei A,B and (m/?) is the electron-nuclear mass ratio (for HD, this parameter is 1.3610-4). A canonical transformation exhibiting these effects (in the form of an asymmetric effective potential) is the basis for the new formulation. Since ?0 is small the resulting dipole moment function is essentially linear in ?0, and hence the dipole moment functions for HT and DT may be computed by rescaling the results for HD. Since the problem is purely electronic in the new formulation, variational and convergence studies are easy to carry out. In this and the following paper we formulate the new theory in detail and carry out variation-perturbation calculations of the HD dipole moment. The results are in good agreement with theoretical results obtained by nonadiabatic perturbation theory and demonstrate that this approach to isotopically induced dipole moments is valid.

W. R. Thorson; J. H. Choi; S. K. Knudson

1985-01-01T23:59:59.000Z

236

Help Sheet for Faculty Evaluation Process (Fall 2013) This document is intended to assist faculty and staff as they prepare materials for the Individual Performance Review (IPR) and the  

E-Print Network [OSTI]

faculty and staff as they prepare materials for the Individual Performance Review (IPR) and the faculty, postdoctoral fellows) are evaluated at the department level only. In a nutshell, those who must submit an IPR and Green forms, and IPR and CV. Just as with tenure track faculty, a judgment of merit does not mean

Chu, Xi

237

Help Sheet for Faculty Evaluation Process (Fall 2012) This document is intended to assist faculty and staff as they prepare materials for the Individual Performance Review (IPR) and the  

E-Print Network [OSTI]

faculty and staff as they prepare materials for the Individual Performance Review (IPR) and the faculty, postdoctoral fellows) are evaluated at the department level only. In a nutshell, those who must submit an IPR faculty. Submit Ivory and Green forms, and IPR and CV. Just as with tenure track faculty, a judgment

Vonessen, Nikolaus

238

Effect of Operating Conditions and H2S Presence on the Performance of CaMg0.1Mn0.9O3?? Perovskite Material in Chemical Looping Combustion (CLC)  

Science Journals Connector (OSTI)

Effect of Operating Conditions and H2S Presence on the Performance of CaMg0.1Mn0.9O3?? Perovskite Material in Chemical Looping Combustion (CLC) ... After the cyclone, particles fall down into a solids reservoir, which acts as a loop seal. ... Industrial & Engineering Chemistry Research (2009), 48 (11), 5542-5547 CODEN: IECRED; ISSN:0888-5885. ...

Arturo Cabello; Alberto Abad; Pilar Gayn; Luis F. de Diego; Francisco Garca-Labiano; Juan Adnez

2014-01-27T23:59:59.000Z

239

Characterization and Electrochemical Performance of SubstitutedLiNi0.4Co0.2-yAlyMn0.4O2 (0<_y<_0.2) Cathode Materials  

SciTech Connect (OSTI)

A complete series of LiNi0.4Co0.2-yAlyMn0.4O2 (0<_y<_0.2) materials have been synthesized and investigated as cathode materials for lithium ion batteries. When cycled between 2.0 and 4.3 V vs. Li/Li+ at a current density of 0.1 mA/cm2, stable capacities of ~;;160 mAh/g for y=0 to ~;;110 mAh/g for y=0.2 are achieved. Upon increasing the current density, it is found that all materials containing aluminum show reduced polarization and improved rate performance. The optimal performance at all current densities was found for the compound with y=0.05. The effect of aluminumsubstitution on the crystal structure of the host is discussed.

Wilcox, James D.; Doeff, Marca M.

2007-11-28T23:59:59.000Z

240

The Magnetic Moments of H3 and He3  

Science Journals Connector (OSTI)

A measurement of the magnetic moments of the nuclei H3 and He3 would yield information concerning the deviations from L-S coupling in these nuclei. It is shown that the sum of the moments of the two nuclei can be directly related to the amount of admixture of the P2, P4, and D4 eigenfunctions with the S2 function. Thus the measurement of both moments would lead to direct information concerning the contributions of these functions to the ground state of the two nuclei. The individual moments depend to some extent on the detailed properties of the wave functions, but if only the S2 and D4 functions contribute appreciably to the ground state, and if particularly simple forms of these functions are assumed, the moment of each nucleus is shown to be expressible in terms of the amount of admixture of the two functions. If then the amount of D4 function is taken to be 4 percent on the basis of an estimate by Gerjuoy and Schwinger, the moments of H3 and He3 are found to be 2.71 and - 1.86 nuclear magnetons, respectively.

R. G. Sachs and Julian Schwinger

1946-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "momentive performance materials" 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

Magnetic Moment of the Proton in Units of the Bohr Magneton; the Magnetic Moment of the Electron  

Science Journals Connector (OSTI)

The details of a previously reported measurement of the proton magnetic moment in units of the Bohr magneton are given. This ratio of moments, which is obtained from common magnetic field observations of the nuclear magnetic resonance frequency of protons in a spherical sample of mineral oil and the cyclotron frequency of free low-energy electrons, is found to be ?p(oil)?0=(657.4620.003)-1, where the uncertainty represents the estimated 50% probable error. The magnetic moment of the free proton is found, upon application of the appropriate diamagnetic correction factor, to be ?p?0=(657.4420.003)-1. The present result may be combined with reported values for the ratio of the magnetic moment of the electron to the moment of the proton to yield for the magnetic moment of the free electron in units of the Bohr magneton, {?e?0,=1.0011680.000005}{=1+(?2?)+(1.20.9)(?2?2),} where the uncertainty is the estimated 50% probable error. This result is to be compared with the current theoretically estimated value for this quality, {?e?0,=1+(?2?)-0.328(?2?2)}{=1.0011596.}

Sidney Liebes; Jr. and Peter Franken

1959-11-01T23:59:59.000Z

242

Chapter 6: Materials  

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

: Materials : Materials Material Selection Sustainable Building Materials System Integration Issues | Chapter 6 Material Selection Materials The use of durable, attractive, and environmentally responsible building materials is a key element of any high-performance building effort. The use of natural and healthy materials contributes to the well-being of the occupants and to a feeling of connection with the bounty of the natural world. Many construction materials have significant environ- mental impacts from pollutant releases, habitat destruc- tion, and depletion of natural resources. This can occur during extraction and acquisition of raw materials, pro- "Then I say the Earth belongs to duction and manufacturing processes, and transporta- tion. In addition, some construction materials can harm

243

Materialism and materiality  

Science Journals Connector (OSTI)

Accountants and auditors in recent financial scandals have been pictured as materialistic, simply calculating consequences and ignoring duties. This paper potentially explains this apparently materialistic behaviour in what has historically been a truthtelling profession. Materiality, which drives audit priorities, has been institutionalised in accounting and auditing standards. But a materiality focus inherently implies that all amounts that are not 'materially' misstated are equally true. This leads to habitual immaterial misstatements and promotes the view that auditors do not care about truth at all. Auditors' lack of commitment to truth undermines their claim to be professionals in the classic sense.

Michael K. Shaub

2005-01-01T23:59:59.000Z

244

Electric Transition Dipole Moment in pre-Born-Oppenheimer Molecular Structure Theory  

E-Print Network [OSTI]

This paper presents the calculation of the electric transition dipole moment in a pre-Born-Oppenheimer framework. Electrons and nuclei are treated equally in terms of the parametrization of the non-relativistic total wave function, which is written as a linear combination of basis functions constructed with explicitly correlated Gaussian functions and the global vector representation. The integrals of the electric transition dipole moment are derived corresponding to these basis functions in both the length and the velocity representation. The complete derivation and the calculations are performed in laboratory-fixed Cartesian coordinates without relying on coordinates which separate the center of mass from the translationally invariant degrees of freedom. The effect of the overall motion is eliminated via translationally invariant integral expressions. As a numerical example the electric transition dipole moment is calculated between two rovibronic levels of the H2 molecule assignable to the lowest rovibrational states of the X ^1Sigma^+_g and B ^1Sigma^+_u electronic states in the clamped-nuclei framework. This is the first evaluation of this quantity in a full quantum mechanical treatment without relying on the Born-Oppenheimer approximation.

Benjamin Simmen; Edit Matyus; Markus Reiher

2014-06-14T23:59:59.000Z

245

Energy absorption behaviors of nanoporous materials functionalized (NMF) liquids  

E-Print Network [OSTI]

investigating high-performance energy absorption materials,investigating high-performance energy absorption materials,high energy absorption efficiency of nanoporous materials

Kim, Tae Wan

2011-01-01T23:59:59.000Z

246

Advanced Materials Manufacturing and Innovative Technologies...  

Energy Savers [EERE]

Inform Integrity Management Plans. - Opportunities: * Leverage advances in high-performance computing and improved understanding of materials performance at condition. *...

247

Petascale lattice-Boltzmann studies of amphiphilic cubic liquid crystalline materials in a globally distributed high-performance computing and visualization environment  

Science Journals Connector (OSTI)

...a high-performance grid infrastructure using the application hosting...Description of computational infrastructure Ranger was deployed at the...Jaguar petascale system, a hybrid XT5/XT4 system, located...parallel file systems and I/O infrastructure. The I/O performance deterioration...

2010-01-01T23:59:59.000Z

248

Iconic microphonic moments in historic vocal recordings  

Science Journals Connector (OSTI)

Microphone selectionthe strategic pairing of microphone make and model with each sound to be recordedis one of the most important decisions a sound engineer must make. The technical specifications of the microphone identify which transducers are capable of functioning properly for any given recording task but the ultimate decision is a creative one. The goal is for the performance capabilities of the microphone to not only address any practical recording session challenges but also flatter the sound of the instrument whether in pursuit of palpable realism or a fictionalized new timbre. The creative decision is informed in part by demonstrated success in prior recordings the most important of which are described for that essential pop music instrument: the voice.

2014-01-01T23:59:59.000Z

249

Microearthquake moment tensors from the Coso Geothermal area | Open Energy  

Open Energy Info (EERE)

Microearthquake moment tensors from the Coso Geothermal area Microearthquake moment tensors from the Coso Geothermal area Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Proceedings: Microearthquake moment tensors from the Coso Geothermal area Details Activities (1) Areas (1) Regions (0) Abstract: The Coso geothermal area, California, has produced hot water and steam for electricity generation for more than 20 years, during which time there has been a substantial amount of microearthquake activity in the area. Seismicity is monitored by a high-quality permanent network of 16 three-component digital borehole seismometers operated by the US Navy and supplemented by a ~ 14-station portable array of surface three-component digital instruments. The portable stations improve focal sphere coverage, providing seismic-wave polarity and amplitude data sets sufficient for

250

Magnetic moments of octet baryons at finite density and temperature  

E-Print Network [OSTI]

We investigate the change of magnetic moments of octet baryons in nuclear matter at a finite density and temperature. Quark-meson coupling models are employed in describing properties of octet baryons and their interactions. Magnetic moments of octet baryons are found to increase non-negligibly as density and temperature increase, and we find that temperature dependence can be strongly correlated with the quark-hadron phase transition. Model dependence is also examined by comparing the results from the quark-meson coupling (QMC) model to those by the modified QMC (MQMC) model where the bag constant is assumed to depend on density. Both models predict sizable dependence on density and temperature, but the MQMC model shows a more drastic change of magnetic moments. Feasible changes of the nucleon mass by strong magnetic fields are also reported in the given models.

C. Y. Ryu; C. H. Hyun; M. -K. Cheoun

2010-08-12T23:59:59.000Z

251

Novel theory of the HD dipole moment. II. Computations  

Science Journals Connector (OSTI)

In the preceding paper we derived a new theory of the dipole moments of homopolar but isotopically asymmetric molecules (such as HD, HT, and DT) in which the electrical asymmetry appears directly in the electronic Hamiltonian (in an appropriate Born-Oppenheimer separation) and the dipole moment may be computed as a purely electronic property. In the present paper we describe variation-perturbation calculations and convergence studies on the dipole moment for HD, which is found to have the value 8.5110-4 debye at 1.40 a.u. Using the two alternative formulations of the electronic problem, we can provide a test of basis-set adequacy and convergence of the results, and such convergence studies are reported here. We have also computed vibration-rotation transition matrix elements and these are compared with experimental and other theoretical results.

W. R. Thorson; J. H. Choi; S. K. Knudson

1985-01-01T23:59:59.000Z

252

Magnetic Moment Enhancement for Mn7 Cluster on Graphene  

SciTech Connect (OSTI)

Mn7 cluster on graphene with different structural motifs and magnetic orders are investigated systematically by first-principles calculations. The calculations show that Mn7 on graphene prefers a two-layer motif and exhibits a ferrimagnetic coupling. The magnetic moment of the Mn7 cluster increases from 5.0 ?B at its free-standing state to about 6.0 ?B upon adsorption on graphene. Mn7 cluster also induces about 0.3 ?B of magnetic moment in the graphene layer, leading to an overall enhancement of 1.3 ?B magnetic moment for Mn7 on graphene. Detail electron transfer and bonding analysis have been carried out to investigate the origin of the magnetic enhancement.

Liu, Xiaojie [Ames Laboratory; Wang, Cai-Zhuang [Ames Laboratory; Lin, Hai-Qing [Beijing Computational Science Research Center; Ho, Kai-Ming [Ames Laboratory

2014-08-21T23:59:59.000Z

253

CoFe2O4-Graphene Nanocomposites Synthesized through An Ultrasonic Method with Enhanced Performances as Anode Materials for Li-ion Batteries  

Science Journals Connector (OSTI)

CoFe2O4-graphene nanosheets (CoFe2O4...-GNSs) were synthesized through an ultrasonic method, and their electrochemical performances as Li-ion battery electrode were improved by annealing processes. The...?1 even ...

Yinglin Xiao; Xiaomin Li; Jiantao Zai; Kaixue Wang; Yong Gong; Bo Li

2014-10-01T23:59:59.000Z

254

Hyperfine Structure and Nuclear Moments of Columbium93  

Science Journals Connector (OSTI)

Measurements have been made on the hyperfine structure of 32 lines in the spectrum of CbI. Analysis of these structures supports the previously reported spin value of 4 units for the Cb93 nucleus and yields 32 hyperfine interval factors. These data, when used in conjunction with semi-empirical formulas for the coupling between the nucleus and an s electron in the configuration 4d45s, lead to values for the nuclear g-factor and nuclear magnetic moment of 1.18 and 5.3 nuclear magnetons, respectively, for stable Cb93. No nuclear electric quadrupole moment is detected.

Wilkison W. Meeks and Russell A. Fisher

1947-09-15T23:59:59.000Z

255

Magnetic Moments of Negative-Parity Baryons from Lattice QCD  

E-Print Network [OSTI]

We report preliminary results for the magnetic moments of negative-parity baryons extracted from mass shifts in the presence of static external magnetic fields. The calculations are done on $24^3\\times 48$ quenched lattices using standard Wilson actions, with $\\beta$=6.0 and pion mass down to about 520 MeV, and 1000 configurations. Reasonable signals for the negative-parity states are observed and the sign of their magnetic moments is established. The results are compared to model calculations.

Frank X. Lee; Andrei Alexandru

2010-11-18T23:59:59.000Z

256

Electric dipole moments from flavored CP violation in supersymmetry  

SciTech Connect (OSTI)

The so-called supersymmetric flavor and CP problems are deeply related to the origin of flavor and hence to the origin of the standard model Yukawa couplings themselves. We show that realistic SU(3) flavor symmetries with spontaneous CP violation reproducing correctly the standard model Yukawa matrices can simultaneously solve both problems without ad hoc modifications of the supersymmetric model. We analyze the leptonic electric dipole moments and lepton flavor violation processes in these models. We show that the electron electric dipole moment and the decay {mu}{yields}e{gamma} are naturally within reach of the proposed experiments if the sfermion masses are measurable at the LHC.

Calibbi, L. [SISSA/ISAS and INFN, I-34013, Trieste (Italy); Departament de Fisica Teorica and IFIC, Universitat de Valencia-CSIC, E-46100, Burjassot (Spain); Perez, J. Jones; Vives, O. [Departament de Fisica Teorica and IFIC, Universitat de Valencia-CSIC, E-46100, Burjassot (Spain)

2008-10-01T23:59:59.000Z

257

Energy of magnetic moment of superconducting current in magnetic field  

E-Print Network [OSTI]

The energy of magnetic moment of the persistent current circulating in superconducting loop in an externally produced magnetic field is not taken into account in the theory of quantization effects because of identification of the Hamiltonian with the energy. This identification misleads if, in accordance with the conservation law, the energy of a state is the energy expended for its creation. The energy of magnetic moment is deduced from a creation history of the current state in magnetic field both in the classical and quantum case. But taking this energy into account demolishes the agreement between theory and experiment. Impartial consideration of this problem discovers the contradiction both in theory and experiment.

V. L. Gurtovoi; A. V. Nikulov

2014-12-22T23:59:59.000Z

258

Magnetic dipole moment of 57,59Cu measured by in-gas-cell laser spectroscopy  

E-Print Network [OSTI]

In-gas-cell laser spectroscopy study of the 57,59,63,65Cu isotopes has been performed for the first time using the 244.164 nm optical transition from the atomic ground state of copper. The nuclear magnetic dipole moments for 57,59,65Cu relative to that of 63Cu have been extracted. The new value for 57Cu of mu(57Cu) = +2.582(7)mu_N is in strong disagreement with the previous literature value but in good agreement with recent theoretical and systematic predictions.

T. E. Cocolios; A. N. Andreyev; B. Bastin; N. Bree; J. Buscher; J. Elseviers; J. Gentens; M. Huyse; Yu. Kudryavtsev; D. Pauwels; T. Sonoda; P. Van den Bergh; P. Van Duppen

2009-06-16T23:59:59.000Z

259

PICPANTHER: A simple, concise implementation of the relativistic moment implicit Particle-in-Cell method  

E-Print Network [OSTI]

A three-dimensional, parallelized implementation of the electromagnetic relativistic moment implicit particle-in-cell method in Cartesian geometry (Noguchi et. al., 2007) is presented. Particular care was taken to keep the C++11 codebase simple, concise, and approachable. GMRES is used as a field solver and during the Newton-Krylov iteration of the particle pusher. Drifting Maxwellian problem setups are available while more complex simulations can be implemented easily. Several test runs are described and the code's numerical and computational performance is examined. Weak scaling on the SuperMUC system is discussed and found suitable for large-scale production runs.

Kempf, Andreas; Ganse, Urs; Schreiner, Cedric; Spanier, Felix

2015-01-01T23:59:59.000Z

260

Synthesis and electrochemical performance of LiNi{sub 0.7}Co{sub 0.15}Mn{sub 0.15}O{sub 2} as gradient cathode material for lithium batteries  

SciTech Connect (OSTI)

Highlights: ? The gradient precursors Ni{sub 0.7}Co{sub 0.15}Mn{sub 0.15}(OH){sub 2} is prepared by hydroxide co-precipitating. ? The cathode materials is synthesized by mixing the precursor with 5% excess LiOHH{sub 2}O. ? The XRD results show that cathode materials present layered ?-NaFeO{sub 2} typical crystal. ? Material sintered at 850 C shows the best performance, with high-capacity and recyclability. -- Abstract: LiNi{sub 0.7}Co{sub 0.15}Mn{sub 0.15}O{sub 2} as a cathode material for lithium batteries was synthesized by mixing hydroxide co-precipitated precursors with 5% excess LiOHH{sub 2}O. Its structural and electrochemical properties were investigated using X-ray diffractometry, scanning electron microscopy, galvanostatic chargedischarge test, and electrochemical impedance spectroscopy. The results indicated that well-ordering layered LiNi{sub 0.7}Co{sub 0.15}Mn{sub 0.15}O{sub 2} cathode materials were successfully prepared in air at 750, 800, and 850C with ?-NaFeO{sub 2} typical crystal. The results of chargedischarge test demonstrated that the gradient cathode material sintered at 850 C exhibited the best electrochemical performance with the initial discharge capacity of 164 mA h g{sup ?1} at 0.2 C and lower electrochemical impedance. Nickel has low price. LiNiO{sub 2} cathode materials have high specific capacity, their theoretical capacity is 274 mA h g{sup ?1} and with low self-discharge rate. So the Ni, Co, Mn ternary layer-structural compounds with high Ni content are showing to be promising cathode materials for lithium batteries. The techniques and research results in this paper are utilizable for the study of this kind of lithium battery materials.

Zhang, Lipeng; Dong, Tao [School of Chemical Engineering, Shandong University of Technology, Zibo 255049 (China)] [School of Chemical Engineering, Shandong University of Technology, Zibo 255049 (China); Yu, Xianjin, E-mail: hgxyzlp@sdut.edu.cn [School of Chemical Engineering, Shandong University of Technology, Zibo 255049 (China)] [School of Chemical Engineering, Shandong University of Technology, Zibo 255049 (China); Dong, Yunhui; Zhao, Zengdian; Li, Heng [School of Chemical Engineering, Shandong University of Technology, Zibo 255049 (China)] [School of Chemical Engineering, Shandong University of Technology, Zibo 255049 (China)

2012-11-15T23:59:59.000Z

Note: This page contains sample records for the topic "momentive performance materials" 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

preprint; submitted to Physical Review Letters in November 2003 Dipole moment of a Pb-O vacancy pair in PbTiO3  

E-Print Network [OSTI]

preprint; submitted to Physical Review Letters in November 2003 Dipole moment of a Pb-O vacancy-8520 The polarization of a nearest neighbor (nn) Pb-O vacancy pair ((VP b - VO)nn) in PbTiO3 is calculated, using and perfor- mance of these materials are expected to be strongly af- fected by defects such as lead vacancies

Burton, Benjamin P.

262

Second moment method for a family of boolean CSP  

E-Print Network [OSTI]

The estimation of phase transitions in random boolean Constraint Satisfaction Problems (CSP) is based on two fundamental tools: the first and second moment methods. While the first moment method on the number of solutions permits to compute upper bounds on any boolean CSP, the second moment method used for computing lower bounds proves to be more tricky and in most cases gives only the trivial lower bound 0. In this paper, we define a subclass of boolean CSP covering the monotone versions of many known NP-Complete boolean CSPs. We give a method for computing non trivial lower bounds for any member of this subclass. This is achieved thanks to an application of the second moment method to some selected solutions called characteristic solutions that depend on the boolean CSP considered. We apply, as an example, this method to establish that the threshold r_{k} of monotone 1-in-k-SAT is \\log k/k\\leq r_{k}\\leq\\log^{2}k/k

Boufkhad, Yacine

2011-01-01T23:59:59.000Z

263

Measuring Asphaltenes and Resins, and Dipole Moment in Petroleum Fluids  

E-Print Network [OSTI]

Measuring Asphaltenes and Resins, and Dipole Moment in Petroleum Fluids Lamia Goual Earth Science, Palo Alto, CA 94306 A petroleum fluid can be di®ided into three types of species: asphaltenes, resins or mildly polar. The interaction among these species strongly affect asphaltene precipitation from petroleum

Firoozabadi, Abbas

264

Magnetic Moment of Vector Mesons in the Background Field Method  

E-Print Network [OSTI]

We report some results for the magnetic moments of vector mesons extracted from mass shifts in the presence of static external magnetic fields. The calculations are done on $24^4$ quenched lattices using standard Wilson actions, with $\\beta$=6.0 and pion mass down to 500 MeV. The results are compared to those from the form factor method.

Frank X. Lee; Scott Moerschbacher; Walter Wilcox

2007-10-11T23:59:59.000Z

265

The Electric and Magnetic Moments of the Neutron  

Science Journals Connector (OSTI)

...The Electric and Magnetic Moments of the Neutron J. M. Pendlebury K. Smith It is well known that the free neutron decays spontaneously into a proton, an...Grenoble, which have shown that the neutron charge is probably less than 4 x 10...

1980-01-01T23:59:59.000Z

266

Heavy Triplets: Electric Dipole Moments vs Proton Decay  

E-Print Network [OSTI]

The experimental limit on the electron electric dipole moment constraints the pattern of supersymmetric grand-unified theories with right-handed neutrinos. We show that such contraints are already competing with the well known ones derived by the limit on proton lifetime.

Isabella Masina; Carlos A. Savoy

2003-10-30T23:59:59.000Z

267

Heavy Triplets: Electric Dipole Moments vs Proton Decay  

E-Print Network [OSTI]

The experimental limit on the electron electric dipole moment constraints the pattern of supersymmetric grand-unified theories with right-handed neutrinos. We show that such contraints are already competing with the well known ones derived by the limit on proton lifetime.

Masina, I; Masina, Isabella; Savoy, Carlos

2004-01-01T23:59:59.000Z

268

Dipole-moment derivative of LiF  

Science Journals Connector (OSTI)

The dipole-moment derivative d?dr has been calculated for LiF from available Hartree-Fock and configuration-interaction wave functions. Calculated values of d?dr are not in agreement with the value determined from a measurement of the first vibrational state lifetime by Bedding and Moran. Other calculated molecular properties are also compared with the available data.

S. W. Harrison and C. R. Fischer

1976-02-01T23:59:59.000Z

269

Electric dipole moments of nanosolvated acid molecules in water clusters  

E-Print Network [OSTI]

The electric dipole moments of $(H_{2}O)_{n}DCl$ ($n=3-9$) clusters have been measured by the beam deflection method. Reflecting the (dynamical) charge distribution within the system, the dipole moment contributes information about the microscopic structure of nanoscale solvation. The addition of a DCl molecule to a water cluster results in a strongly enhanced susceptibility. There is evidence for a noticeable rise in the dipole moment occurring at $n\\approx5-6$. This size is consistent with predictions for the onset of ionic dissociation. Additionally, a molecular dynamics model suggests that even with a nominally bound impurity an enhanced dipole moment can arise due to the thermal and zero point motion of the proton and the water molecules. The experimental measurements and the calculations draw attention to the importance of fluctuations in defining the polarity of water-based nanoclusters, and generally to the essential role played by motional effects in determining the response of fluxional nanoscale sy...

Guggemos, Nicholas; Kresin, Vitaly V

2015-01-01T23:59:59.000Z

270

Effective equations for the quantum pendulum from momentous quantum mechanics  

SciTech Connect (OSTI)

In this work we study the quantum pendulum within the framework of momentous quantum mechanics. This description replaces the Schroedinger equation for the quantum evolution of the system with an infinite set of classical equations for expectation values of configuration variables, and quantum dispersions. We solve numerically the effective equations up to the second order, and describe its evolution.

Hernandez, Hector H.; Chacon-Acosta, Guillermo [Universidad Autonoma de Chihuahua, Facultad de Ingenieria, Nuevo Campus Universitario, Chihuahua 31125 (Mexico); Departamento de Matematicas Aplicadas y Sistemas, Universidad Autonoma Metropolitana-Cuajimalpa, Artificios 40, Mexico D. F. 01120 (Mexico)

2012-08-24T23:59:59.000Z

271

Visual Speech Recognition Using Image Moments and Multiresolution Wavelet Images  

Science Journals Connector (OSTI)

This paper describes a new technique for recognizing speech using visual speech information. The video data of the speaker's mouth is represented using grayscale images named as motion history image (MHI). MHI is generated by applying accumulative image ... Keywords: visual speech recognition, motion history image, image moments, discrete stationary wavelet transform

Wai C. Yau; Dinesh K. Kumar; Sridhar P. Arjunan; Sanjay Kumar

2006-07-01T23:59:59.000Z

272

Neutron Electric Dipole Moment from Beyond the Standard Model  

E-Print Network [OSTI]

We discuss the phenomenology of neutron Electric Dipole Moment from the Standard Model and beyond, and identify the matrix elements most necessary to connect the current and forthcoming experiments with phenomenology. We then describe lattice techniques for calculating these matrix elements

Tanmoy Bhattacharya; Vincenzo Cirigliano; Rajan Gupta

2012-12-20T23:59:59.000Z

273

New search for the neutron electric dipole moment  

SciTech Connect (OSTI)

We report on a new experiment to search for the neutron electric dipole moment which has the potential ta lower the current limit by a factor of 50 to 100. A unique approach to this measurement is described including the results of recent measurements at LANSCE of the mass diffusion coefficient for 3He in superfluid 4He.

Barnes, Peter D.

2002-01-01T23:59:59.000Z

274

Spin-it: optimizing moment of inertia for spinnable objects  

Science Journals Connector (OSTI)

Spinning tops and yo-yos have long fascinated cultures around the world with their unexpected, graceful motions that seemingly elude gravity. We present an algorithm to generate designs for spinning objects by optimizing rotational dynamics properties. ... Keywords: fabrication, moment of inertia, shape optimization

Moritz Bcher; Emily Whiting; Bernd Bickel; Olga Sorkine-Hornung

2014-07-01T23:59:59.000Z

275

Conceptual Design Report Neutron Electric Dipole Moment Project  

E-Print Network [OSTI]

For the U.S. Department of Energy Office of Science Office of Nuclear Physics (SC-26) Date approved at Los Alamos National Laboratory Los Alamos, New Mexico managed by Los Alamos National Security, LLC.S. Department of Energy. LA-UR-5076 #12;i #12;ii A New Search for The Neutron Electric Dipole Moment Conceptual

276

Electromagnetic soliton-particle with spin and magnetic moment  

E-Print Network [OSTI]

Electromagnetic soliton-particle with both quasi-static and quick-oscillating wave parts is considered. Its mass, spin, charge, and magnetic moment appear naturally when the interaction with distant solitons is considered. The substantiation of Dirac equation for the wave part of the interacting soliton-particle is given.

Alexander A. Chernitskii

2012-12-17T23:59:59.000Z

277

Carton motion-moment diagram and stiffness characteristics  

Science Journals Connector (OSTI)

To achieve the versatility in developing a packaging machine, it is imperative to understand the motion and stiffness characteristics of cartons during industrial folding and manipulation. It is desirable to describe carton and its folding procedure ... Keywords: equivalent mechanism, motion-moment diagram, packaging carton, stiffness

Guowu Wei; Ruirui Zhang; Jian S. Dai

2010-11-01T23:59:59.000Z

278

MODELING THE MUON COOLING CHANNEL USING MOMENTS B. A. Shadwick  

E-Print Network [OSTI]

to reach the luminosity goals demanded by high- energy physics applications [3]. Furthermore, this cooling Using a moment formalism [1, 2] we model beam trans- port in the muon collider cooling channel. This model con- tains much of the physics we believe to be relevant to muon cooling such as ionization energy

Wurtele, Jonathan

279

Moments of Spin Structure Functions: Sum Rules and Polarizabilities  

E-Print Network [OSTI]

Nucleon structure study is one of the most important research areas in modern physics and has challenged us for decades. Spin has played an essential role and often brought surprises and puzzles to the investigation of the nucleon structure and the strong interaction. New experimental data on nucleon spin structure at low to intermediate momentum transfers combined with existing high momentum transfer data offer a comprehensive picture in the strong region of the interaction and of the transition region from the strong to the asymptotic-free region. Insight for some aspects of the theory for the strong interaction, Quantum Chromodynamics (QCD), is gained by exploring lower moments of spin structure functions and their corresponding sum rules. These moments are expressed in terms of an operator-product expansion using quark and gluon degrees of freedom at moderately large momentum transfers. The higher-twist contributions have been examined through the evolution of these moments as the momentum transfer varies from higher to lower values. Furthermore, QCD-inspired low-energy effective theories, which explicitly include chiral symmetry breaking, are tested at low momentum transfers. The validity of these theories is further examined as the momentum transfer increases to moderate values. It is found that chiral perturbation theory calculations agree reasonably well with the first moment of the spin structure function g_1 at low momentum transfer of 0.05 - 0.1 GeV^2 but fail to reproduce some of the higher moments, noticeably, the neutron data in the case of the generalized polarizability Delta_LT. The Burkhardt-Cottingham sum rule has been verified with good accuracy in a wide range of Q^2 assuming that no singular behavior of the structure functions is present at very high excitation energies.

Jian-ping Chen

2010-01-21T23:59:59.000Z

280

Electrochemical performance of polyaniline coated LiMn{sub 2}O{sub 4} cathode active material for lithium ion batteries  

SciTech Connect (OSTI)

LiMn{sub 2}O{sub 4} compound are synthesized by combustion method using glycine as a fuel at temperature (T), 800C which was coated by a polyaniline. The goal of this procedure is to promote better electronic conductivity of the LiMn{sub 2}O{sub 4} particles in order to improve their electrochemical performance for their application as cathodes in secondary lithium ion batteries. The structures of prepared products have been investigated by X-ray diffraction (XRD) and scanning electron microscopy (SEM). To investigate the effect of polyaniline coating galvanostatic charge-discharge cycling (148 mA g{sup ?1}) studies are made in the voltage range of 3.5-4.5 V vs. Li at room temperature. Electrochemical performance of the LiMn{sub 2}O{sub 4} was significantly improved by the polaniline coating.

?ahan, Halil, E-mail: halil@erciyes.edu.tr; Dokan, Fatma K?l?c, E-mail: halil@erciyes.edu.tr; Ayd?n, Abdlhamit, E-mail: halil@erciyes.edu.tr; zdemir, Burcu, E-mail: halil@erciyes.edu.tr; zdemir, Nazl?, E-mail: halil@erciyes.edu.tr; Patat, ?aban, E-mail: halil@erciyes.edu.tr [Department of Chemistry, Science Faculty, Erciyes University, Kayseri, 38039 (Turkey)

2013-12-16T23:59:59.000Z

Note: This page contains sample records for the topic "momentive performance materials" 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

Journal of Magnetism and Magnetic Materials 290291 (2005) 836838 Dynamic response limits of an elastic magnet  

E-Print Network [OSTI]

on the elastomagnetic coupling but also on the interaction among the microparticles magnetic moments depending as for possible applications [1,2]. When the magnetic particles are permanently magnetized and the matrix material. Bar shaped samples have been produced with the permanent magnetic moments preferentially oriented

Franzese, Giancarlo

282

Materials Science  

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

Materials Science Materials Science Materials Science1354608000000Materials ScienceSome of these resources are LANL-only and will require Remote Access./No/Questions? 667-5809library@lanl.gov Materials Science Some of these resources are LANL-only and will require Remote Access. Key Resources Data Sources Reference Organizations Journals Key Resources CINDAS Materials Property Databases video icon Thermophysical Properties of Matter Database (TPMD) Aerospace Structural Metals Database (ASMD) Damage Tolerant Design Handbook (DTDH) Microelectronics Packaging Materials Database (MPMD) Structural Alloys Handbook (SAH) Proquest Technology Collection Includes the Materials Science collection MRS Online Proceedings Library Papers presented at meetings of the Materials Research Society Data Sources

283

A Materials-Based Mitigation Strategy for SU/SD in PEM Fuel Cells: Properties and Performance-Specific Testing of IrRu OER Catalysts.  

SciTech Connect (OSTI)

Catalysts that enable proton exchange membrane fuel cells to weather the damaging conditions experienced during transient periods of fuel starvation have been developed. The addition of minute amounts of iridium and ruthenium to the cathode enhances the oxygen evolution reaction (OER) during start-up/shutdown events, thus lowering the peak cell voltage closer to the onset of water oxidation. The catalyst loadings ranged from 1 to 10 g/cm2, but showed surprisingly high activity and durability. At such low loadings, it is possible to fully integrate the OER catalysts with negligible interference on fuel cell performance and a marginal increase in catalyst cost.

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

2013-01-01T23:59:59.000Z

284

Preparation and performances of CoMn spinel coating on a ferritic stainless steel interconnect material for solid oxide fuel cell application  

Science Journals Connector (OSTI)

Abstract Ferritic stainless steels have become the candidate materials for interconnects of intermediate temperature solid oxide fuel cell (SOFC). The present issues to be solved urgently for the application of ferritic stainless steel interconnects are their rapid increase in contact resistance and Cr poisoning. In the present study, a chloride electrolyte suspension has been developed to electro-deposit a CoMn alloy on a type 430 stainless steel, followed by heat treatment at 750C in argon and at 800C in air to obtain CoMn spinel coatings. The experimental results indicate that an adhesive and compact CoMn alloy layer can be deposited in the chloride solution. After heat treatment, a complex coating composed of an external MnCo2O4 layer and an inner Cr-rich oxide layer has been formed on 430SS. The coating improves the oxidation resistance of the steel at 800C in air, especially in wet air, and inhibits the outward diffusion of Cr from the Cr-rich scale. Moreover, a low contact resistance has been achieved with the application of the spinel coatings.

H.H. Zhang; C.L. Zeng

2014-01-01T23:59:59.000Z

285

Reference Material  

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

Reference Materials There are a variety of reference materials the NSSAB utilizes and have been made available on its website. Documents Fact Sheets - links to Department of Energy...

286

Materials Science  

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

Materials Science science-innovationassetsimagesicon-science.jpg Materials Science National security depends on science and technology. The United States relies on Los Alamos...

287

Neutron Electric Dipole Moments from Beyond the Standard Model Physics  

E-Print Network [OSTI]

Neutron Electric Dipole Moment (nEDM), a generic feature of CP-violation, is predicted to be very small in the Standard Model, but can be much larger in most extensions of the model. In this talk, I will discuss the classification of the CP violating operators up to dimension 6 that can give rise to nEDM, and then describe the mixing and renormalization structure of the operators of dimension 5 and lower in both dimensional and cutoff regularizations in general terms. Finally I will describe how to connect the dimension 5 operators, in particular, the Chromoelectric Dipole Moment of the quarks, between MSbar scheme and a Regularization Independent prescription in the chiral limit.

Tanmoy Bhattacharya; Vincenzo Cirigliano; Rajan Gupta

2014-03-11T23:59:59.000Z

288

Conservative Moment Equations for Neutrino Radiation Transport with Limited Relativity  

E-Print Network [OSTI]

We derive conservative, multidimensional, energy-dependent moment equations for neutrino transport in core-collapse supernovae and related astrophysical systems, with particular attention to the consistency of conservative four-momentum and lepton number transport equations. After taking angular moments of conservative formulations of the general relativistic Boltzmann equation, we specialize to a conformally flat spacetime, which also serves as the basis for four further limits. Two of these---the multidimensional special relativistic case, and a conformally flat formulation of the spherically symmetric general relativistic case---are given in appendices for the sake of comparison with extant literature. The third limit is a weak-field, `pseudo-Newtonian' approach \\citep{kim_etal_2009,kim_etal_2012} in which the source of the gravitational potential includes the trace of the stress-energy tensor (rather than just the mass density), and all orders in fluid velocity $v$ are retained. Our primary interest here ...

Endeve, Eirik; Mezzacappa, Anthony

2012-01-01T23:59:59.000Z

289

Mercury Monohalides: Suitability for Electron Electric Dipole Moment Searches  

E-Print Network [OSTI]

Heavy polar diatomic molecules are the primary tools for searching for the T-violating permanent electric dipole moment of the electron (eEDM). Valence electrons in some molecules experience extremely large effective electric fields due to relativistic interactions. These large effective electric fields are crucial to the success of polar-molecule-based eEDM search experiments. Here we report on the results of relativistic ab initio calculations of the effective electric fields in a series of molecules that are highly sensitive to an eEDM, the mercury monohalides (HgF, HgCl, HgBr,and HgI). We study the influence of the halide anions on effective electric field, and identify HgBr and HgI as interesting candidates for future electric dipole moment search experiments.

Prasannaa, V S; Abe, M; Das, B P

2014-01-01T23:59:59.000Z

290

Bespoke Materials Surfaces  

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

Bespoke Materials Surfaces Bespoke Materials Surfaces Background The Department of Energy (DOE) has established performance and efficiency goals for power generation systems which will improve the ability of the U.S. energy sector to produce electricity efficiently with less impact to the environment. Power systems showing the most promise for reaching these goals require corrosion resistance alloys able to perform at very high pressures and temperatures. Increasing both the

291

Moment-tensor statistics of the 1997 Long Valley microearthquake swarm  

Science Journals Connector (OSTI)

Abstract. A simple, fast, moment-tensor inversion method using bandpass-filtered P-amplitudes was used to study the moment-tensor statistics of Long Valley caldera microearthquakes. The events were recorded in...

A. Stroujkova; P.E. Malin

2002-01-01T23:59:59.000Z

292

Plasmon decay to a neutrino pair via neutrino electromagnetic moments in a strongly magnetized medium  

E-Print Network [OSTI]

We calculate the neutrino luminosity of a degenerate electron gas in a strong magnetic field via plasmon decay to a neutrino pair due to neutrino electromagnetic moments and obtain the relative upper bounds on the effective neutrino magnetic moment.

A. V. Borisov; P. E. Sizin

2014-06-12T23:59:59.000Z

293

Neutrino Magnetic Moment, CP Violation and Flavor Oscillations in Matter  

E-Print Network [OSTI]

We consider collective oscillations of neutrinos, which are emergent nonlinear flavor evolution phenomena instigated by neutrino-neutrino interactions in astrophysical environments with sufficiently high neutrino densities. We investigate the symmetries of the problem in the full three flavor mixing scheme and in the exact many-body formulation by including the effects of CP violation and neutrino magnetic moment. We show that, similar to the two flavor scheme, several dynamical symmetries exist for three flavors in the single-angle approximation if the net electron background in the environment and the effects of the neutrino magnetic moment are negligible. Moreover, we show that these dynamical symmetries are present even when the CP symmetry is violated in neutrino oscillations. We explicitly write down the constants of motion through which these dynamical symmetries manifest themselves in terms of the generators of the SU(3) flavor transformations. We also show that the effects due to the CP-violating Dirac phase factor out of the many-body evolution operator and evolve independently of nonlinear flavor transformations if neutrino electromagnetic interactions are ignored. In the presence of a strong magnetic field, CP-violating effects can still be considered independently provided that an effective definition for neutrino magnetic moment is used.

Y. Pehlivan; A. B. Balantekin; Toshitaka Kajino

2014-06-19T23:59:59.000Z

294

The Nuclear Spin and Magnetic Moment of Potassium (41)  

Science Journals Connector (OSTI)

The spin of the K41 nucleus and the h.f.s. separation of the S122 normal state have been measured by the method of zero moments. The high resolution necessary to separate the two isotopes was obtained by passing a beam of neutral potassium atoms through a weak inhomogeneous magnetic field 153 cm long. The total beam length was 201 cm. A new method of analysis of the zero moment peak of K41 in relation to that of K39 was used in the determination of the spin. The spin was found to be 3/2 and the h.f.s. separation to be 0.5540.2 percent of that of K39. The same ratio applies to the magnetic moments, hence this ratio and the values for K39 given by Fox and Rabi yield {??(K41),=0.008530.0001cm-1}{?(K41),=0.22nuclear Bohr magneton .} From the peak intensities it is possible to give the abundance ratio K39/K41 as 13.40.5.

J. H. Manley

1936-06-15T23:59:59.000Z

295

Photovoltaic Materials  

SciTech Connect (OSTI)

The goal of the current project was to help make the US solar industry a world leader in the manufacture of thin film photovoltaics. The overall approach was to leverage ORNLs unique characterization and processing technologies to gain a better understanding of the fundamental challenges for solar cell processing and apply that knowledge to targeted projects with industry members. ORNL has the capabilities in place and the expertise required to understand how basic material properties including defects, impurities, and grain boundaries affect the solar cell performance. ORNL also has unique processing capabilities to optimize the manufacturing process for fabrication of high efficiency and low cost solar cells. ORNL recently established the Center for Advanced Thin-film Systems (CATS), which contains a suite of optical and electrical characterization equipment specifically focused on solar cell research. Under this project, ORNL made these facilities available to industrial partners who were interested in pursuing collaborative research toward the improvement of their product or manufacturing process. Four specific projects were pursued with industrial partners: Global Solar Energy is a solar industry leader in full scale production manufacturing highly-efficient Copper Indium Gallium diSelenide (CIGS) thin film solar material, cells and products. ORNL worked with GSE to develop a scalable, non-vacuum, solution technique to deposit amorphous or nanocrystalline conducting barrier layers on untextured stainless steel substrates for fabricating high efficiency flexible CIGS PV. Ferro Corporations Electronic, Color and Glass Materials (ECGM) business unit is currently the worlds largest supplier of metallic contact materials in the crystalline solar cell marketplace. Ferros ECGM business unit has been the world's leading supplier of thick film metal pastes to the crystalline silicon PV industry for more than 30 years, and has had operational cells and modules in the field for 25 years. Under this project, Ferro leveraged world leading analytical capabilities at ORNL to characterize the paste-to-silicon interface microstructure and develop high efficiency next generation contact pastes. Ampulse Corporation is developing a revolutionary crystalline-silicon (c-Si) thin-film solar photovoltaic (PV) technology. Utilizing uniquely-textured substrates and buffer materials from the Oak Ridge National Laboratory (ORNL), and breakthroughs in Hot-Wire Chemical Vapor Deposition (HW-CVD) techniques in epitaxial silicon developed at the National Renewable Energy Laboratory (NREL), Ampulse is creating a solar technology that is tunable in silicon thickness, and hence in efficiency and economics, to meet the specific requirements of multiple solar PV applications. This project focused on the development of a high rate deposition process to deposit Si, Ge, and Si1-xGex films as an alternate to hot-wire CVD. Mossey Creek Solar is a start-up company with great expertise in the solar field. The primary interest is to create and preserve jobs in the solar sector by developing high-yield, low-cost, high-efficiency solar cells using MSC-patented and -proprietary technologies. The specific goal of this project was to produce large grain formation in thin, net-shape-thickness mc-Si wafers processed with high-purity silicon powder and ORNL's plasma arc lamp melting without introducing impurities that compromise absorption coefficient and carrier lifetime. As part of this project, ORNL also added specific pieces of equipment to enhance our ability to provide unique insight for the solar industry. These capabilities include a moisture barrier measurement system, a combined physical vapor deposition and sputtering system dedicated to cadmium-containing deposits, adeep level transient spectroscopy system useful for identifying defects, an integrating sphere photoluminescence system, and a high-speed ink jet printing system. These tools were combined with others to study the effect of defects on the performance of crystalline silicon and

Duty, C.; Angelini, J.; Armstrong, B.; Bennett, C.; Evans, B.; Jellison, G. E.; Joshi, P.; List, F.; Paranthaman, P.; Parish, C.; Wereszczak, A.

2012-10-15T23:59:59.000Z

296

NETL: Advanced Research - Materials  

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

High Performance Materials > Chrome Oxide Refractory High Performance Materials > Chrome Oxide Refractory Advanced Research High Performance Materials Chrome Oxide Refractory One notable NETL success is the development of a chrome oxide refractory material capable of working in slagging gasifier conditions. In this project, researchers first determined that one of the major failure mechanisms for chrome oxide refractories exposed to the intense heat and corrosive environment was spalling, or the chipping or flaking of refractory material from an exposed face. They used this information to formulate a high-chrome oxide refractory composition that resists spalling, resulting in a refractory with a longer service life in the gasifier. Inside an ultrasupercritical (USC) pulverized coal power plant, materials are exposed to temperatures up to 760°C and pressures up to 5,000 psi. Operating a USC system can improve power plant efficiency up to 47% and reduce emissions. However, finding boiler and turbine materials that can hold up under extreme conditions requires new high-temperature metal alloys and ceramic coatings, as well as computational modeling research to optimize the processing of these materials. Advanced Research Materials Development program successes in this area include the following:

297

Making a Magnetic Moment in a Split Picosecond | Advanced Photon Source  

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

Unpeeling Atoms and Molecules from the Inside Out Unpeeling Atoms and Molecules from the Inside Out Butterfly Wing Yields Clues to Light-Altering Structures Squeezing Information from Materials under Extreme Pressure Quick-Change Molecules Caught in the Act The Molecular Mechanics of Hearing and Deafness Science Highlights Archives: 2013 | 2012 | 2011 | 2010 2009 | 2008 | 2007 | 2006 2005 | 2004 | 2003 | 2002 2001 | 2000 | 1998 | Subscribe to APS Science Highlights rss feed Making a Magnetic Moment in a Split Picosecond JULY 1, 2010 Bookmark and Share Michel van Veenendaal (left) and Jun Chang in van Veenendaal's office at the APS, discussing figure 3 from their Physical Review Letters article, "Model of Ultrafast Intersystem Crossing in Photoexcited Transition-Metal Organic Compounds." A wide range of phenomena in nature and technology depend on changes that

298

DPC materials and corrosion environments  

SciTech Connect (OSTI)

This review focuses on the performance of basket materials that could be exposed to ground water over thousands of years, and prospective disposal overpack materials that could possibly be used to protect dual-purpose canisters (DPCs) in disposal environments.

Ilgen, Anastasia G.; Bryan, Charles R.; Stephanie Teich-McGoldrick; Ernest Hardin

2014-10-01T23:59:59.000Z

299

Evidence-Based Background Material Underlying Guidance for Federal...  

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

Material Underlying Guidance for Federal Agencies in Implementing Strategic Sustainability Performance Plans Evidence-Based Background Material Underlying Guidance for...

300

Combining Modeling Methodologies for Improved Understanding of Smart Material Characteristics  

E-Print Network [OSTI]

Combining Modeling Methodologies for Improved Understanding of Smart Material Characteristics Material Systems and Structures February 2, 1998 ABSTRACT Smart materials are complex materials performance capabilities but the synergistic response of the smart material and companion structure. Behavior

Lindner, Douglas K.

Note: This page contains sample records for the topic "momentive performance materials" 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

T violation in radiative $\\beta$ decay and electric dipole moments  

E-Print Network [OSTI]

In radiative $\\beta$ decay, $T$ violation can be studied through a spin-independent $T$-odd correlation. We consider contributions to this correlation by beyond the standard model (BSM) sources of $T$-violation, arising above the electroweak scale. At the same time such sources, parametrized by dimension-6 operators, can induce electric dipole moments (EDMs). As a consequence, the manifestations of the $T$-odd BSM physics in radiative $\\beta$ decay and EDMs are not independent. Here we exploit this connection to show that current EDM bounds already strongly constrain the spin-independent $T$-odd correlation in radiative $\\beta$ decay.

Dekens, W G

2015-01-01T23:59:59.000Z

302

Lattice Determination of the Anomalous Magnetic Moment of the Muon  

E-Print Network [OSTI]

We compute the leading hadronic contribution to the anomalous magnetic moment of the muon a_mu^HLO using two dynamical flavours of non-perturbatively O(a) improved Wilson fermions. By applying partially twisted boundary conditions we are able to improve the momentum resolution of the vacuum polarisation, an important ingredient for the determination of the leading hadronic contribution. We check systematic uncertainties by studying several ensembles, which allows us to discuss finite size effects and lattice artefacts. The chiral behavior of a_mu^HLO turns out to be non-trivial, especially for small pion masses.

Michele Della Morte; Benjamin Jger; Andreas Jttner; Hartmut Wittig

2011-11-09T23:59:59.000Z

303

Probing CP violation with the deuteron electric dipole moment  

Science Journals Connector (OSTI)

We present an analysis of the electric dipole moment (EDM) of the deuteron as induced by CP-violating operators of dimension 4, 5 and 6 including ?QCD, the EDMs and color EDMs of quarks, four-quark interactions and the Weinberg operator. We demonstrate that the precision goal of the EDM Collaborations proposal to search for the deuteron EDM, (13)10-27e cm, will provide an improvement in sensitivity to these sources of one to two orders of magnitude relative to the existing bounds. We consider in detail the level to which CP-odd phases can be probed within the minimal supersymmetric standard model.

Oleg Lebedev; Keith A. Olive; Maxim Pospelov; Adam Ritz

2004-07-22T23:59:59.000Z

304

Probing CP Violation with the Deuteron Electric Dipole Moment  

E-Print Network [OSTI]

We present an analysis of the electric dipole moment (EDM) of the deuteron as induced by CP-violating operators of dimension 4, 5 and 6 including theta QCD, the EDMs and color EDMs of quarks, four-quark interactions and the Weinberg operator. We demonstrate that the precision goal of the EDM Collaboration's proposal to search for the deuteron EDM, (1-3)\\times 10^{-27} e cm, will provide an improvement in sensitivity to these sources of one-two orders of magnitude relative to the existing bounds. We consider in detail the level to which CP-odd phases can be probed within the MSSM.

Lebedev, Oleg; Pospelov, Maxim; Ritz, Adam; Lebedev, Oleg; Olive, Keith A.; Pospelov, Maxim; Ritz, Adam

2004-01-01T23:59:59.000Z

305

Probing CP Violation with the Deuteron Electric Dipole Moment  

E-Print Network [OSTI]

We present an analysis of the electric dipole moment (EDM) of the deuteron as induced by CP-violating operators of dimension 4, 5 and 6 including theta QCD, the EDMs and color EDMs of quarks, four-quark interactions and the Weinberg operator. We demonstrate that the precision goal of the EDM Collaboration's proposal to search for the deuteron EDM, (1-3)\\times 10^{-27} e cm, will provide an improvement in sensitivity to these sources of one-two orders of magnitude relative to the existing bounds. We consider in detail the level to which CP-odd phases can be probed within the MSSM.

Oleg Lebedev; Keith A. Olive; Maxim Pospelov; Adam Ritz

2004-02-02T23:59:59.000Z

306

CRAD, Packaging and Transfer of Hazardous Materials and Materials of  

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

Packaging and Transfer of Hazardous Materials and Materials Packaging and Transfer of Hazardous Materials and Materials of National Security Interest Assessment Plan CRAD, Packaging and Transfer of Hazardous Materials and Materials of National Security Interest Assessment Plan Performance Objective: Verify that packaging and transportation safety requirements of hazardous materials and materials of national security interest have been established and are in compliance with DOE Orders 461.1 and 460.1B Criteria: Verify that safety requirements for the proper packaging and transportation of DOE/NNSA offsite shipments and onsite transfers of hazardous materials and for modal transport have been established [DOE O 460.1B, 1, "Objectives"]. Verify that the contractor transporting a package of hazardous materials is in compliance with the requirements of the Hazardous Materials

307

Materializing energy  

Science Journals Connector (OSTI)

Motivated and informed by perspectives on sustainability and design, this paper draws on a diverse body of scholarly works related to energy and materiality to articulate a perspective on energy-as-materiality and propose a design approach of ... Keywords: design, design theory, energy, materiality, sustainability

James Pierce; Eric Paulos

2010-08-01T23:59:59.000Z

308

Nanoscale Material Properties | GE Global Research  

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

Nanotechnology Drives New Levels of Performance Nanotechnology Drives New Levels of Performance GE scientists are discovering new material properties at the nanoscale that drive...

309

Nuclear Spin Relaxation and Nuclear Electric Dipole Moments  

Science Journals Connector (OSTI)

Proposals that nuclear spin relaxation in an appropriate system could serve as a test for the existence of a nuclear electric dipole moment are examined with attention to the consequences of the fact that the electric field at the nucleus is proportional to the nuclear acceleration. It is found that low-frequency fluctuations of the local electric field are suppressed. In particular, the necessarily negative correlation of the momentum transferred in consecutive collisions of an atom in a gas alters the spectral density of the perturbation, from that of uncorrelated pulses, by the factor ?2?c2(1+?2?c2), where ?c is the mean time between collisions. It follows that fairly low gas density is preferable to high. At optimum density a light gas at room temperature carrying electric dipole moments of magnitude e10-14 cm should have a spin relaxation time, in the absence of competing processes, of around 10 minutes. A formula is given for the electrically induced spin relaxation rate in a crystal. The process is hopelessly slow. In the electric coupling of the lattice vibrations to the spin the ordinarily dominant "two-phonon" or "Raman" process is absent, because of the linearity of the connection between local electric field and nuclear motion.

E. M. Purcell

1960-02-01T23:59:59.000Z

310

Wall System Innovations: Familiar Materials, Better Performance  

Broader source: Energy.gov [DOE]

This presentation was delivered at the U.S. Department of Energy Building America Technical Update meeting on April 29-30, 2013, in Denver, Colorado.

311

Refractory Lining Material Improves Gasifer Performance  

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

line the interior of slagging gasifiers, where a carbon-based feedstock such as coal, petcoke, andor biomass, is converted at high temperatures in an oxygen-deficient environment...

312

ALS Ceramics Materials Research Advances Engine Performance  

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

image of a ceramic composite specimen imaged under load at 1750C shows the detailed fracture patterns that researchers are able to view using ALS Beamline 8.3.2. The vertical...

313

Wall System Innovations: Familiar Materials, Better Performance...  

Energy Savers [EERE]

More Documents & Publications Key Issues Building America Team (NAHBRC) - 2014 BTO Peer Review DOE Zero Energy Ready Home Case Study: Sterling Brook Custom Homes, Double...

314

High Performance Valve Materials (HPVM) (Agreement 16304)  

Broader source: Energy.gov [DOE]

Presentation from the U.S. DOE Office of Vehicle Technologies "Mega" Merit Review 2008 on February 25, 2008 in Bethesda, Maryland.

315

Relation between crystal structures, electronic structures, and electrode performances of LiMn2?xMxO4 (M = Ni, Zn) as a cathode active material for 4V secondary Li batteries  

Science Journals Connector (OSTI)

We investigated the relation between the electrode performance and electronic states of LiMn2?xMxO4 (M=Ni, Zn) as cathode active materials for the 4V class of lithium secondary batteries. The cycle performance is improved by substitution of Mn with Ni or Zn. We obtained the electron density distribution by XRD using the MEM/Rietveld method. Moreover, we investigated the electronic states of LiMn1.75M0.25O4 (M=Mn, Ni, Zn) using first-principles calculation by the DV-X? method. The net charges of each atom, and the bond overlap populations of Li?O, Mn?O, Ni?O and Zn?O were calculated. From the results, Li has a high ionicity and the covalent bonding of the Mn?O of LiMn1.75M0.25O4 (M=Ni, Zn) is stronger than that of LiMn2O4. As a result of the DOS, the oxygen 2p orbital and Mn 3d orbital provides the overlap and the overlap of LiMn1.75M0.25O4 is greater than that of LiMn2O4.

Yuka Ito; Yasushi Idemoto; Yuka Tsunoda; Nobuyuki Koura

2003-01-01T23:59:59.000Z

316

Scintillator material  

DOE Patents [OSTI]

An improved scintillator material comprising cerium fluoride is disclosed. Cerium fluoride has been found to provide a balance of good stopping power, high light yield and short decay constant that is superior to known scintillator materials such as thallium-doped sodium iodide, barium fluoride and bismuth germanate. As a result, cerium fluoride is favorably suited for use as a scintillator material in positron emission tomography.

Anderson, David F. (Batavia, IL); Kross, Brian J. (Aurora, IL)

1992-01-01T23:59:59.000Z

317

Scintillator material  

DOE Patents [OSTI]

An improved scintillator material comprising cerium fluoride is disclosed. Cerium fluoride has been found to provide a balance of good stopping power, high light yield and short decay constant that is superior to known scintillator materials such as thallium-doped sodium iodide, barium fluoride and bismuth germanate. As a result, cerium fluoride is favorably suited for use as a scintillator material in positron emission tomography. 4 figs.

Anderson, D.F.; Kross, B.J.

1994-06-07T23:59:59.000Z

318

Scintillator material  

DOE Patents [OSTI]

An improved scintillator material comprising cerium fluoride is disclosed. Cerium fluoride has been found to provide a balance of good stopping power, high light yield and short decay constant that is superior to known scintillator materials such as thallium-doped sodium iodide, barium fluoride and bismuth germanate. As a result, cerium fluoride is favorably suited for use as a scintillator material in positron emission tomography. 4 figs.

Anderson, D.F.; Kross, B.J.

1992-07-28T23:59:59.000Z

319

Scintillator material  

DOE Patents [OSTI]

An improved scintillator material comprising cerium fluoride is disclosed. Cerium fluoride has been found to provide a balance of good stopping power, high light yield and short decay constant that is superior to known scintillator materials such as thallium-doped sodium iodide, barium fluoride and bismuth germanate. As a result, cerium fluoride is favorably suited for use as a scintillator material in positron emission tomography.

Anderson, David F. (Batavia, IL); Kross, Brian J. (Aurora, IL)

1994-01-01T23:59:59.000Z

320

Advanced Materials  

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

Advanced Materials Advanced Materials Advanced Materials Express Licensing Active Terahertz Metamaterial Devices Express Licensing Anion-Conducting Polymer, Composition, And Membrane Express Licensing Analysis Of Macromolecule, Liggands And Macromolecule-Lingand Complexes Express Licensing Carbon Microtubes Express Licensing Chemical Synthesis Of Chiral Conducting Polymers Express Licensing Forming Adherent Coatings Using Plasma Processing Express Licensing Hydrogen Scavengers Express Licensing Laser Welding Of Fused Quartz Express Licensing Multiple Feed Powder Splitter Negotiable Licensing Boron-10 Neutron Detectors for Helium-3 Replacement Negotiable Licensing Insensitive Extrudable Explosive Negotiable Licensing Durable Fuel Cell Membrane Electrode Assembly (MEA) Express Licensing Method of Synthesis of Proton Conducting Materials

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


321

Critical Materials:  

Office of Environmental Management (EM)

lighting. 14 (bottom) Criticality ratings of shortlisted raw 76 materials. 15 77 2. Technology Assessment and Potential 78 This section reviews the major trends within...

322

Electric Dipole Moments in PseudoDirac Gauginos  

E-Print Network [OSTI]

The SUSY CP problem is one of serious problems in construction of realistic supersymmetric standard models. We consider the problem in a framework in which adjoint chiral multiplets are introduced and gauginos have Dirac mass terms induced by a U(1) gauge interaction in the hidden sector. This is realized in hidden sector models without singlet chiral multiplets, which are favored from a recent study of the Polonyi problem. We find that the dominant contributions to electron and neutron electric dipole moments (EDMs) in the model come from phases in the supersymmetric adjoint mass terms. When the supersymmetric adjoint masses are suppressed by a factor of \\sim 100 compared with the Dirac ones, the electron and neutron EDMs are suppressed below the experimental bound even if the SUSY particle masses are around 1 TeV. Thus, this model works as a framework to solve the SUSY CP problem.

Junji Hisano; Minoru Nagai; Tatsuya Naganawa; Masato Senami

2006-10-28T23:59:59.000Z

323

Nuclear Electric Dipole Moments in Chiral Effective Field Theory  

E-Print Network [OSTI]

We provide the first consistent and complete calculation of the electric dipole moments of the deuteron, helion, and triton in the framework of chiral effective field theory. The CP-conserving and CP-violating interactions are treated on equal footing and we consider CP-violating one-, two-, and three-nucleon operators up to next-to-leading-order in the chiral power counting. In particular, we calculate for the first time EDM contributions induced by the CP-violating three-pion operator. We find that effects of CP-violating nucleon-nucleon contact interactions are larger than those found in previous studies based on phenomenological models for the CP-conserving nucleon-nucleon interactions. Our results are model-independent and can be used to test various scenarios of CP violation. As examples, we study the implications of our results on the QCD $\\theta$-term and the minimal left-right symmetric model.

Bsaisou, J; Hanhart, C; Liebig, S; Meiner, Ulf-G; Minossi, D; Nogga, A; Wirzba, A

2014-01-01T23:59:59.000Z

324

Covariant Spectator Theory of np scattering: Deuteron Quadrupole Moment  

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

The deuteron quadrupole moment is calculated using two CST model wave functions obtained from the 2007 high precision fits to $np$ scattering data. Included in the calculation are a new class of isoscalar $np$ interaction currents automatically generated by the nuclear force model used in these fits. The prediction for model WJC-1, with larger relativistic P-state components, is $2.5\\%$ smaller that the experiential result, in common with the inability of models prior to 2014 to predict this important quantity. However, model WJC-2, with very small P-state components, gives agreement to better than 1\\%, similar to the results obtained recently from $\\chi$EFT predictions to order N$^3$LO.

Gross, Franz

2015-01-01T23:59:59.000Z

325

The moments of Minkowski ?(x) function: dyadic period functions  

E-Print Network [OSTI]

We examine the generating function of moments of the Minkowski question mark function ?(x), which describes the distribution or rationals according to their continued fraction expansion. It appears that the generating function possesses certain modular properties and is defined in the cut plane. The exponential generating function satisfies the integral equation, with kernel being the Bessel function of the first kind. Finally, the solution of this integral equation leads to the definition of dyadic period functions of weight 2 and index lambda. Such a form is defined and is holomorphic in the cut plane, it satisfies the semi-modular functional equation, and it exists for every lambda which is the eigen-value of the properly defined Hilbert-Schmidt integral operator.

Alkauskas, Giedrius

2008-01-01T23:59:59.000Z

326

CIP/multi-moment finite volume method with arbitrary order of accuracy  

E-Print Network [OSTI]

This paper presents a general formulation of the CIP/multi-moment finite volume method (CIP/MM FVM) for arbitrary order of accuracy. Reconstruction up to arbitrary order can be built on single cell by adding extra derivative moments at the cell boundary. The volume integrated average (VIA) is updated via a flux-form finite volume formulation, whereas the point-based derivative moments are computed as local derivative Riemann problems by either direct interpolation or approximate Riemann solvers.

Xiao, Feng

2012-01-01T23:59:59.000Z

327

Shell model estimate of electric dipole moment in medium and heavy nuclei  

SciTech Connect (OSTI)

The nuclear electric dipole moment (EDM) and the nuclear Schiff moment for the lowest 1/2{sup +} state of {sup 129}Xe are investigated in terms of the nuclear shell model. We estimate the upper limit for the EDM of neutral {sup 129}Xe atom using the Schiff moment. We also estimate the upper limit of the nuclear EDM, which may be directly measured through ionic atoms.

Yoshinaga, Naotaka [Department of Physics, Saitama University, Saitama City 338-8570 (Japan); Higashiyama, Koji [Department of Physics, Chiba Institute of Technology, Narashino, Chiba 275-0023 (Japan)

2011-05-06T23:59:59.000Z

328

Electron electric dipole moment experiment using electric-field quantized slow cesium atoms  

E-Print Network [OSTI]

LBNL-51xxx Electron electric dipole momentexperiment using electric-?eld quantized slow cesium atomsA proof-of-principle electron electric dipole moment (e-EDM)

Amini, Jason M.; Munger Jr., Charles T.; Gould, Harvey

2007-01-01T23:59:59.000Z

329

PROGRESS TOWARD A MEASUREMENT OF THE ELECTRON ELECTRICAL DIPOLE MOMENT USING ULTRA-COLD ATOMS.  

E-Print Network [OSTI]

??In this thesis, the basic principles of the C, P, T symmetries are introduced and the experiments to measure the electric dipole moment (EDM) are (more)

Fang, Fang

2007-01-01T23:59:59.000Z

330

The Effect of Sterile States on the Magnetic Moments of Neutrinos  

E-Print Network [OSTI]

We briefly review recent work exploring the effect of light sterile neutrino states on the neutrino magnetic moment as explored by the reactor and solar neutrino experiments.

A. B. Balantekin; N. Vassh

2014-04-04T23:59:59.000Z

331

Evaluating baseball bat performance L. V. Smith  

E-Print Network [OSTI]

Evaluating baseball bat performance L. V. Smith School of Mechanical and Materials Engineering address: L. V. Smith, School of Mechanical and Materials Engineering, Washington State University, Pullman

Smith, Lloyd V.

332

MATERIAL TRACKING USING LANMAS  

SciTech Connect (OSTI)

LANMAS is a transaction-based nuclear material accountability software product developed to replace outdated and legacy accountability systems throughout the DOE. The core underlying purpose of LANMAS is to track nuclear materials inventory and report transactions (movement, mixing, splitting, decay, etc.) to the Nuclear Materials Management and Safeguards System (NMMSS). While LANMAS performs those functions well, there are many additional functions provided by the software product. As a material is received onto a site or created at a site, its entire lifecycle can be tracked in LANMAS complete to its termination of safeguards. There are separate functions to track material movements between and within material balance areas (MBAs). The level of detail for movements within a MBA is configurable by each site and can be as high as a site designation or as detailed as building/room/rack/row/position. Functionality exists to track the processing of materials, either as individual items or by modeling a bulk process as an individual item to track inputs and outputs from the process. In cases where sites have specialized needs, the system is designed to be flexible so that site specific functionality can be integrated into the product. This paper will demonstrate how the software can be used to input material into an account and track it to its termination of safeguards.

Armstrong, F.

2010-06-07T23:59:59.000Z

333

Materials - Home  

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

* Coatings & Lubricants * Coatings & Lubricants * Nanofluids * Deformation Joining * Recycling * Catalysts * Assessment * Illinois Center for Advanced Tribology Modeling, Simulation & Software Plug-In Hybrid Electric Vehicles PSAT Smart Grid Student Competitions Technology Analysis Transportation Research and Analysis Computing Center Working With Argonne Contact TTRDC Materials ring on liner reciprocating tester Tribology Lab: Ring-on-liner reciprocating tester. Argonne National Laboratory plays an important role in the Department of Energy's (DOE's) efforts to develop advanced materials for transportation. The materials are developed with DOE support from the EERE Office of Vehicle Technology and Office of Hydrogen, Fuel Cells, and Infrastructure Technologies in collaboration with worldwide industrial partners. Examples

334

Magnetism in Non-Traditional Materials  

SciTech Connect (OSTI)

We performed a systematic microscopic investigation of two completely dissimilar materials (namely, ZnO and rhombohedral-C{sub 60} polymers) exhibiting ferromagnetism in the presence of defects, and showed that this new phenomena has a common origin and the mechanism responsible can be used as a powerful tool for inducing and tailoring magnetic features in systems which are not magnetic otherwise. Based on our findings we proposed a general recipe for developing ferromagnetism in new materials of great technological interest. Our results support the role of complimentary pairs of defects in inducing magnetism in otherwise non-magnetic materials belonging to two widely differing classes with no apparent correlation between them. In both classes, ferromagnetism is found to be enhanced when the two kinds of defects form structures (pathways) of alternating effective donor and acceptor crystal sites leading to the development of electron charge and spin density like waves. Using ab initio density functional theory calculations we predicted the existence of a new class of carbon cages formed via hybrid connection between planar graphene sheets and carbon nanotubes. The resulting novel structure has the appearance of ?nano-drum? and offers the exciting prospect of integrating useful device properties of both graphene as well as the nanotube into a single unit with tunable electronic properties. Creation of a hexagonal hole in the graphene portion of this structure results in significant magnetic moments for the edge atoms. The structure appears to be capable of sustaining ferrimagnetic state with the assistance of topological defects. The charge and spin distributions obtained in our calculations for the nano-drums are in striking contrast to those in planar graphene nanoribbons with a central hole. In this case, the central hole appears as the complimentary defect to those of the ribbon edges. Similar situation is found in case of the nano-drum in which the complimentary to the hole defects appear to be the pentagons along the curved surface of the drum. Charge oscillations found in the nano-drum are minimized in the nanoribbons. But more importantly, the hole edge atoms in the nano-drums retain significant magnetic moments; almost twice those of the corresponding ones in hydrogenated graphene nanoribbons (H-GNRs). These results suggest that the topological defects in the nano-drums may act like blocks to keep magnetic moments from ?leaking? out from the hole defects. This may have significant implications for the the use of nano-drums in magnetic storage technology where the ratio, magnetic-moment/weight, is of paramount importance in any futuristic device applications. One of the basic problems of the DFT/LSDA+U theory is the efficient evaluation of the U-term. With this in mind we proposed an alternative approach for its calculation which is based on the knowledge of the Hartree-Fock wave functions of the system under consideration. As a result, the proposed approach is closer to the basic definition of the DFT/LSDA+U scheme and its hybrid-DFT nature. According to our approach, the U value is obtained in a consistent and ab-initio way using the self-consistently calculated wave functions of the given system at the level of the HF approximation. Our method is applicable for systems which include more than one type of elements with localized d-orbitals. The method has been applied the case of the doped Zn(Co)O systems successfully. Currently, theories based on conventional superexchange or double-exchange interactions cannot explain long range magnetic order at concentrations below percolation threshold in dilute magnetic semiconductors. On the other hand, the codoping induced magnetism, which can justify magnetic interactions below percolation threshold, has eluded explanation. With this in mind, we proposed that defect-induced magnetism in codoped non-magnetic materials can be viewed within a molecular generalization of the atomic double-exchange and superexchange interactions applied to an arbitrary bipartite lattice host

Menon, Madhu

2013-09-17T23:59:59.000Z

335

Enhanced High and Low Temperature Performance of NOx Reduction...  

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

Enhanced High and Low Temperature Performance of NOx Reduction Materials Enhanced High and Low Temperature Performance of NOx Reduction Materials 2013 DOE Hydrogen and Fuel Cells...

336

Complex Materials  

SciTech Connect (OSTI)

Valentino Cooper uses some of the world's most powerful computing to understand how materials work at subatomic levels, studying breakthroughs such as piezoelectrics, which convert mechanical stress to electrical energy.

Cooper, Valentino

2014-04-17T23:59:59.000Z

337

Complex Materials  

ScienceCinema (OSTI)

Valentino Cooper uses some of the world's most powerful computing to understand how materials work at subatomic levels, studying breakthroughs such as piezoelectrics, which convert mechanical stress to electrical energy.

Cooper, Valentino

2014-05-23T23:59:59.000Z

338

NREL Advances Spillover Materials for Hydrogen Storage (Fact Sheet)  

SciTech Connect (OSTI)

This fact sheet describes NREL's accomplishments in advancing spillover materials for hydrogen storage and improving the reproducible synthesis, long-term durability, and material costs of hydrogen storage materials. Work was performed by NREL's Chemical and Materials Science Center.

Not Available

2010-12-01T23:59:59.000Z

339

Materializing Energy  

E-Print Network [OSTI]

Motivated and informed by perspectives on sustainability and design, this paper draws on a diverse body of scholarly works related to energy and materiality to articulate a perspective on energy-as-materiality and propose a design approach of materializing energy. Three critical themes are presented: the intangibility of energy, the undifferentiatedness of energy, and the availability of energy. Each theme is developed through combination of critical investigation and design exploration, including the development and deployment of several novel design artifacts: Energy Mementos and The Local Energy Lamp. A framework for interacting with energy-as-materiality is proposed involving collecting, keeping, sharing, and activating energy. A number of additional concepts are also introduced, such as energy attachment, energy engagement, energy attunement, local energy and energy meta-data. Our work contributes both a broader, more integrative design perspective on energy and materiality as well as a diversity of more specific concepts and artifacts that may be of service to designers and researchers of interactive systems concerned with sustainability and energy. Author Keywords Sustainability, energy, materiality, design, design theory

James Pierce; Eric Paulos

340

Electromagnetic multipole moments of spin 3/2 particles in NKR formalism  

SciTech Connect (OSTI)

In this work we present results for Compton scattering off spin 3/2 particles in NKR formalism and relate the behavior of the cross section to the electromagnetic multipole moments of the particle included by this formalism. We obtain expressions for such multipole moments using model independent definitions.

Delgado A, E. German; Napsuciale, Mauro [Instituto de Fisica de la Universidad de Guanajuato, C.P. 37150, Leon, Guanajuato (Mexico)

2009-04-20T23:59:59.000Z

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


341

Numerical solutions of moment equations for flow in heterogeneous composite aquifers  

E-Print Network [OSTI]

Numerical solutions of moment equations for flow in heterogeneous composite aquifers C. L. Winter on the composite media theory of Winter and Tartakovsky [2000, 2002], which allows one to derive and solve moment a representative composite medium to investigate the robustness of perturbation approximations in porous medium

Tartakovsky, Daniel M.

342

Adaptive change of basis in entropy-based moment closures for linear kinetic equations  

Science Journals Connector (OSTI)

Entropy-based (M"N) moment closures for kinetic equations are defined by a constrained optimization problem that must be solved at every point in a space-time mesh, making it important to solve these optimization problems accurately and efficiently. ... Keywords: Convex optimization, Entropy-based closures, Kinetic theory, Moment equations, Realizability, Transport

Graham W. Alldredge; Cory D. Hauck; Dianne P. Oleary; Andr L. Tits

2014-02-01T23:59:59.000Z

343

Jefferson Lab's results on the Q^2-evolution of moments of spin structure functions  

E-Print Network [OSTI]

We present the recent JLab measurements on moments of spin structure functions at intermediate and low Q^2. The Bjorken sum and Burkhardt-Cottingham sum on the neutron are presented. The later appears to hold. Higher moments (generalized spin polarizabilities and d_2^n) are shown and compared to chiral perturbation theory and lattice QCD respectively.

A. Deur

2005-07-15T23:59:59.000Z

344

Magnetic moments of $?_Q^\\prime$-$?_Q$ transitions in light cone QCD  

E-Print Network [OSTI]

The $\\Xi_Q^\\prime$-$\\Xi_Q$ transition magnetic moments are calculated in framework of the light cone QCD sum rules method (LCSR). The values of the transition magnetic moments obtained are compared with the predictions of the other theoretical approaches.

T. M. Aliev; K. Azizi; M. Savci

2014-02-21T23:59:59.000Z

345

Extension of Dale's Moment Conditions with Application to the Wright-Fisher Model 1  

E-Print Network [OSTI]

Extension of Dale's Moment Conditions with Application to the Wright-Fisher Model 1 Kurt Helmes2, to evaluate the stationary distribution for the diffusion approximation of the Wright-Fisher model. Key Words. Dale moment conditions, Wright-Fisher model, stationary distribution, linear pro- gramming

Stockbridge, Richard H.

346

Frequency Moments Inverse Problem and Maximum (Shannon vs. R enyi-Tsallis) Entropy  

E-Print Network [OSTI]

) maximization of Shannon's entropy (MaxEnt), b) maximization of R#19;enyi-Tsallis entropy (maxTent). ConcerningEnt 4 1.2 Aims 5 2 Frequency moment constraints 5 2.1 Characteristics of MaxEnt choice 6 2.2 Maximum RFrequency Moments Inverse Problem and Maximum (Shannon vs. R#19;enyi-Tsallis) Entropy #3; A case

347

Magnetic moment of Ag-104(m) and the hyperfine magnetic field of Ag in Fe using nuclear magnetic resonance on oriented nuclei  

E-Print Network [OSTI]

Nuclear magnetic resonance (NMR/ON) measurements with beta- and gamma-ray detection have been performed on oriented Ag-104(g,m) nuclei with the NICOLE He-3-He-4 dilution refrigerator setup at ISOLDE/CERN. For Ag-104(g) (I-pi = 5(+)) the gamma-NMR/ON resonance signal was found at nu = 266.70(5) MHz. Combining this result with the known magnetic moment for this isotope, the magnetic hyperfine field of Ag impurities in an Fe host at low temperature (magnetic moment mu(Ag-104m) = +3.691(3) mu(N), which is significantly more precise than previous results. The magnetic moments of the even-A Ag102 -110 isotopes are discussed in view of the competition between the (pi g(9/2))(7/2+)(-3)(nu d(5/2)nu g(7/2))(5/2+) and the (pi g(9/2))(9/2+)(-3)(nu d(5/2)nu g(7/2))(5/2+) configurations. The magnetic moments of the ground and isomeric states of Ag-104 can be explained by an almost complete mixing of these two configurations.

V. V. Golovko; I. S. Kraev; T. Phalet; B. Delaure; M. Beck; V. Yu. Kozlov; S. Coeck; F. Wauters; P. Herzog; Ch. Tramm; D. Zakoucky; D. Venos; D. Srnka; M. Honusek; U. Koester; N. Severijns

2010-06-30T23:59:59.000Z

348

Nuclear quadrupole moment-induced Cotton-Mouton effect in molecules  

SciTech Connect (OSTI)

Nuclear magneto-optic effects could make important contributions to novel, high-sensitivity, and high-resolution spectroscopic and imaging methods that provide nuclear site-specific structural and dynamic information on molecular and materials systems. Here we present a first-principles electronic structure formulation of nuclear quadrupole moment-induced Cotton-Mouton effect in terms of response theory, as well as ab initio and density-functional theory calculations of this phenomenon for a series of molecular liquids: H{sub 2}O, CH{sub 3}NO{sub 2}, CH{sub 3}CH{sub 2}OH, C{sub 6}H{sub 6}, C{sub 6}H{sub 12} (cyclohexane), HI, XeF{sub 2}, WF{sub 5}Cl, and Pt(C{sub 2}dtp){sub 2}. The roles of basis-set convergence, electron correlation, and relativistic effects are discussed. The estimated order of magnitude of the overall ellipticities induced to linearly polarized light is 10{sup ?3}10{sup ?7} rad/(Mcm) for fully spin polarized nuclei. The cases with the largest presently obtained ellipticities should be detectable with modern instrumentation in the Voigt magneto-optic setup, particularly for the heavy nuclei.

Fu, Li-juan, E-mail: lijuan.fu@oulu.fi, E-mail: juha.vaara@iki.fi; Vaara, Juha, E-mail: lijuan.fu@oulu.fi, E-mail: juha.vaara@iki.fi [NMR Research Group, Department of Physics, University of Oulu, P.O. Box 3000, FIN-90014 Oulu (Finland)] [NMR Research Group, Department of Physics, University of Oulu, P.O. Box 3000, FIN-90014 Oulu (Finland)

2014-01-14T23:59:59.000Z

349

2012 Energy-Saving Moments in the Nation's Capital | Department of Energy  

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

2012 Energy-Saving Moments in the Nation's Capital 2012 Energy-Saving Moments in the Nation's Capital 2012 Energy-Saving Moments in the Nation's Capital January 4, 2013 - 1:02pm Q&A What was your favorite energy-saving moment of 2012? Leave a comment! Addthis Erin R. Pierce Erin R. Pierce Digital Communications Specialist, Office of Public Affairs How can I participate? Share your favorite 2012 energy-saving moment with us and your comment may be featured on Energy.gov! To participate use our Q&A tool or send a comment via Facebook or Twitter. As a new year begins, it's only natural to reflect on the previous year's highlights. From celebrating the completion of Washington, DC's first passive solar house to flipping the switch on LED lighting for the National Mall -- for our nation's capital, 2012 was a year for advancing

350

The Anapole Moment of the Deuteron with the Argonne v18 Nucleon-Nucleon Interaction Model  

E-Print Network [OSTI]

We calculate the deuteron anapole moment with the wave functions obtained from the Argonne $v18$ nucleon-nucleon interaction model. The anapole moment operators are considered at the leading order. To minimize the uncertainty due to a lack of current conservation, we calculate the matrix element of the anapole moment from the original definition. In virtue of accurate wave functions, we can obtain a more precise value of the deuteron anapole moment which contains less uncertainty than the former works. We obtain a result reduced by more than 25% in the magnitude of the deuteron anapole moment. The reduction of individual nuclear contributions is much more important however, varying from a factor 2 for the spin part to a factor 4 for the convection and associated two-body currents.

Chang Ho Hyun; Bertrand Desplanques

2002-06-07T23:59:59.000Z

351

The anapole moment of the deuteron with the Argonne v18 nucleonnucleon interaction model  

Science Journals Connector (OSTI)

We calculate the nuclear part of the deuteron anapole moment with the wave functions obtained from the Argonne v18 nucleonnucleon interaction model. The anapole moment operators are considered at the leading order. To minimize the uncertainty due to a lack of current conservation, we calculate the matrix element of the anapole moment from the original definition. In virtue of accurate wave functions, we can obtain a more precise value of the deuteron anapole moment which contains less uncertainty than the former works. We obtain a result reduced by more than 25% in the magnitude of the deuteron anapole moment. The reduction of individual nuclear contributions is much more important however, varying from a factor 2 for the spin part to a factor 4 for the convection and associated two-body currents.

Chang Ho Hyun; Bertrand Desplanques

2003-01-01T23:59:59.000Z

352

SPIN STATE AND MOMENT OF INERTIA CHARACTERIZATION OF 4179 TOUTATIS  

SciTech Connect (OSTI)

The 4.5 km long near-Earth asteroid 4179 Toutatis has made close Earth flybys approximately every four years between 1992 and 2012, and has been observed with high-resolution radar imaging during each approach. Its most recent Earth flyby in 2012 December was observed extensively at the Goldstone and Very Large Array radar telescopes. In this paper, Toutatis' spin state dynamics are estimated from observations of five flybys between 1992 and 2008. Observations were used to fit Toutatis' spin state dynamics in a least-squares sense, with the solar and terrestrial tidal torques incorporated in the dynamical model. The estimated parameters are Toutatis' Euler angles, angular velocity, moments of inertia, and the center-of-mass-center-of-figure offset. The spin state dynamics as well as the uncertainties of the Euler angles and angular velocity of the converged solution are then propagated to 2012 December in order to compare the dynamical model to the most recent Toutatis observations. The same technique of rotational dynamics estimation can be applied to any other tumbling body, given sufficiently accurate observations.

Takahashi, Yu; Scheeres, D. J. [University of Colorado at Boulder, 429 UCB, Boulder, CO 80309-0429 (United States); Busch, Michael W. [National Radio Astronomy Observatory, 1003 Lopezville Road, Box O, Socorro, NM 87801 (United States)

2013-10-01T23:59:59.000Z

353

Evaluation of the energy states of hydrogen atom using Schroedinger equation with a Coulomb potential modified by the interaction between the magnetic moments of the proton and electron  

E-Print Network [OSTI]

In this paper we have performed the calculus of the energy states of hydrogen atom by using the Schroedinger equation with a Coulomb potential which is modified by the interaction between the magnetic moments of the proton and the electron, respectively. The important result is that the Lamb shift appears as a natural result of the solution of Schroedinger equation. The obtained results are in a good agreement with experimental data.

Voicu Dolocan

2014-04-06T23:59:59.000Z

354

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

Science Journals Connector (OSTI)

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

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

2005-10-10T23:59:59.000Z

355

Theoretical investigations of two Si-based spintronic materials  

SciTech Connect (OSTI)

Two Si-based spintronic materials, a Mn-Si digital ferromagnetic heterostructure ({delta}-layer of Mn doped in Si) with defects and dilutely doped Mn{sub x}Si{sub 1-x} alloy are investigated using a density-functional based approach. We model the heterostructure and alloy with a supercell of 64 atoms and examine several configurations of the Mn atoms. We find that 25% substitutional defects without vacancies in the {delta} layer diminishes half metallicity of the DFH substantially. For the alloy, the magnetic moment M ranges from 1.0-9.0 {mu}{sub B}/unit-cell depending on impurity configuration and concentration. Mn impurities introduce a narrow band of localized states near E{sub F}. These alloys are not half metals though their moments are integer. We explain the substantially different magnetic moments.

Fong, C Y; Snow, R; Shaughnessy, M; Pask, J E; Yang, L H

2007-08-03T23:59:59.000Z

356

Materials Handbook  

Science Journals Connector (OSTI)

... THE sub title of this handbook gives the clue to the mode of treatment of the subject matter, and so ... seventeen to 'alkalis'; in fact, a better title for the book would be "Handbook of Engineering Materials". British trade names are conspicuously few, but no doubt a ...

E. H. TRIPP

1942-08-15T23:59:59.000Z

357

Materials for geothermal production  

SciTech Connect (OSTI)

Advances in the development of new materials continue to be made in the geothermal materials project. Many successes have already been accrued and the results used commercially. In FY 1991, work was focused on reducing well drilling, fluid transport and energy conversion costs. Specific activities performed included lightweight CO{sub 2}-resistant well cements, thermally conductive and scale resistant protective liner systems, chemical systems for lost circulation control, corrosion mitigation in process components at The Geysers, and elastomer-metal bonding systems. Efforts to transfer the technologies developed in these efforts to other energy-related sectors of the economy continued and considerable success was achieved.

Kukacka, L.E.

1992-01-01T23:59:59.000Z

358

Materials Sciences Division 1990 annual report  

SciTech Connect (OSTI)

This report is the Materials Sciences Division's annual report. It contains abstracts describing materials research at the National Center for Electron Microscopy, and for research groups in metallurgy, solid-state physics, materials chemistry, electrochemical energy storage, electronic materials, surface science and catalysis, ceramic science, high tc superconductivity, polymers, composites, and high performance metals.

Not Available

1990-01-01T23:59:59.000Z

359

Materials Sciences Division 1990 annual report  

SciTech Connect (OSTI)

This report is the Materials Sciences Division`s annual report. It contains abstracts describing materials research at the National Center for Electron Microscopy, and for research groups in metallurgy, solid-state physics, materials chemistry, electrochemical energy storage, electronic materials, surface science and catalysis, ceramic science, high tc superconductivity, polymers, composites, and high performance metals.

Not Available

1990-12-31T23:59:59.000Z

360

Math Library Performance  

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

Math Library Performance Math Library Performance Math Library Performance Fully optimizing a given application's performance often requires a deep understand of the source, an accurate profile for a representative run and the ability to have changes to the source accepted upstream. However, in many cases, significant performance gains can be achieved by simply optimizing the code over the matrix of possible compilers, compiler options and libraries available on a given machine. Here, we explore the performance variability of common materials science applications at NERSC with respect to the compilers and libraries available on Edison, NERSC's Cray XC30. NERSC currently supports compilers from three different vendors on the XC30 system, Edison: Intel, GNU and Cray. Materials science applications

Note: This page contains sample records for the topic "momentive performance materials" 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

Nuclear Material Control and Accountability  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

This Order establishes performance objectives, metrics, and requirements for developing, implementing, and maintaining a nuclear material control and accountability program within DOE/NNSA and for DOE-owned materials at other facilities that are exempt from licensing by the Nuclear Regulatory Commission. Cancels DOE M 470.4-6. Admin Chg 1, 8-3-11.

2011-06-27T23:59:59.000Z

362

Optical Spectroscopy of Tungsten Carbide for Uncertainty Analysis in Electron Electric Dipole Moment Search  

E-Print Network [OSTI]

We perform laser induced fluorescence(LIF) spectroscopy on a pulsed supersonic beam of tungsten carbide(WC) molecules, which has been proposed as a candidate molecular system for a permanent Electric Dipole Moment(EDM) search of the electron in its rovibrational ground state of the X3Delta1 state. In particular, [20.6]Omega=2, v'=4 <- X3Delta1,v"=0 transition at 485nm was used for the detection. The hyperfine structure and the Omega-doublet of the transition are measured, which are essential for estimating the size of the potential systematic uncertainties for electron EDM measurement. For further suppression of the systematic uncertainty, an alternative electron EDM measurement scheme utilizing the g factor crossing point of the Omega-doublet levels is discussed. On the other hand, flux and internal temperature of the molecular beam are characterized, which sets the limit on the statistical uncertainty of the electron EDM experiment. With the given results, the prospect of electron EDM experiment with the...

Lee, J; Skripnikov, L V; Petrov, A N; Titov, A V; Mosyagin, N S; Leanhardt, A E

2012-01-01T23:59:59.000Z

363

Moment Analysis of Hadronic Vacuum Polarization - Proposal for a lattice QCD evaluation of $g_?-2$  

E-Print Network [OSTI]

I suggest a new approach to the determination of the hadronic vacuum polarization (HVP) contribution to the anomalous magnetic moment of the muon $a_{\\mu}^{\\rm HVP}$ in lattice QCD. It is based on properties of the Mellin transform of the hadronic spectral function and their relation to the HVP self energy in the Euclidean. I show how $a_{\\mu}^{\\rm HVP}$ is very well approximated by a few moments associated to this Mellin transform and how these moments can be evaluated in lattice QCD, providing thus a series of tests when compared with the corresponding determinations using experimental data.

Eduardo de Rafael

2014-06-18T23:59:59.000Z

364

Sixth Moment of Dipolar-Broadened Magnetic-Resonance-Absorption Line Shapes in Crystals  

Science Journals Connector (OSTI)

Several recently developed theories of broad-line NMR presume the knowledge of the first several moments of the line shape. An exact expression for the sixth moment for the purely dipolar-broadened case is presented here. The result indicates that the sixth moment consists of one type of two-particle term, five types of three-particle terms, and nine types of four-particle terms, one of which has a vanishing coefficient. Most of the contribution comes from the four-particle terms.

E. T. Cheng and J. D. Memory

1972-09-01T23:59:59.000Z

365

The scalar unparticle effect on the charged lepton electric dipole moment  

E-Print Network [OSTI]

We study the charged lepton electric dipole moment which is induced by the scalar unparticle mediation and we predict the appropriate range for the free parameters appearing in the effective lagrangian which drives the unparticle-standard model lepton interactions. We observe that the charged lepton electric dipole moment is strongly sensitive to the scaling dimension d_u of the unparticle and the new couplings in the effective interaction. Furthermore, we see that the current experimental limits of charged lepton electric dipole moments can ensure an appropriate range for these free parameters.

E. O. Iltan

2007-10-14T23:59:59.000Z

366

Understanding and Enhancing Polarization in Complex Materials  

Science Journals Connector (OSTI)

Recent advances in theoretical methods and high-performance computing allow for reliable first-principles investigations of complex materials. This article focuses on calculating and predicting the properties of piezoelectrics and "designing" new materials ...

Jerry Bernholc; Serge M. Nakhmanson; Marco Buongiorno Nardelli; Vincent Meunier

2004-11-01T23:59:59.000Z

367

Functional Materials for Energy | Advanced Materials | ORNL  

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

Thermoelectrics Separations Materials Catalysis Sensor Materials Polymers and Composites Carbon Fiber Related Research Chemistry and Physics at Interfaces Materials Synthesis from...

368

PHYSICAL REVIEW E 88, 022127 (2013) Dynamics of an electric dipole moment in a stochastic electric field  

E-Print Network [OSTI]

PHYSICAL REVIEW E 88, 022127 (2013) Dynamics of an electric dipole moment in a stochastic electric 2013; published 15 August 2013) The mean-field dynamics of an electric dipole moment in a deterministic and a fluctuating electric field is solved to obtain the average over fluctuations of the dipole moment

Band, Yehuda B.

369

Volume 28B, number 5 PHYSICS LETTERS 23 December 1968 MAGNETIC MOMENTS AND SHORT-RANGE CORRELATIONS*  

E-Print Network [OSTI]

to previous assertions, Brueckner correlations do affect magnetic moments. The parameteriza- tion that emerges of the Brueckner theory do not influence the moments [1]. We will first show that this as- sertion is incorrect. Amado's proof for the orbital contribution to the magnetic moment rests on the analogy of Brueckner

Bertsch George F.

370

Old Electrochromic Materials  

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

Electrochromic Materials Electrochromic Materials DOE also supports the development of electrochromic coatings through several mechanisms. Three companies are engaged in development of commercial prototypes through the Electrochromics Initiative and an SBIR small business grant. LBNL and another DOE laboratory, the National Renewable Energy Laboratory (NREL) perform a variety of measurements to evaluate the energy performance and durability of these prototypes . Other research activities are intended to assist the efforts of the industry in general. At LBNL, research focuses on rapid development and analysis of electrode materials. Among recent accomplishments was the production of a stoichiometric form of Li0.5Ni0.5O by laser deposition and sputtering with excellent electrochromic properties. Dr. Stuart Cogan of EIC Laboratories tested the films and declared them to have "the highest coloration efficiency of any known anodic electrochromic material." EIC will test the films in their own devices in the near future. We also work on several binary electrodes produced by cosputtering from two targets simultaneously. For example, enhanced forms of tungsten oxide produced in this way have wide application because of the prevalence of tungsten oxide in today's devices. In addition to testing durability, NREL also investigates the degradation mechanisms which lead to failure in the hope of being able to correlate accelerated testing to real time failure as well as to diagnose and correct device problems.

371

Improvement of the Cycling Performance of LiNi0.6Co0.2Mn0.2O2 Cathode Active Materials by a Dual-Conductive Polymer Coating  

Science Journals Connector (OSTI)

The presence of a protective conducting polymer layer formed on the cathode also suppressed the growth of a resistive layer and inhibited the dissolution of transition metals from the active cathode materials, which resulted in more stable cycling characteristics than the pristine LiNi0.6Co0.2Mn0.2O2 cathode material at 55 oC. ... It is well known that the gradual capacity fading of layered LiNixCoyMn1-x-yO2 materials at high temperatures is due to structural and interfacial instabilities as well as dissolution of transition metals from the active cathode material by HF attack. ... (40, 41) It is plausible that the protective PEDOT-co-PEG layer coated on the active LiNi0.6Co0.2Mn0.2O2 material renders the cathode material more resistive against HF attack in the electrolyte and thus inhibits the dissolution of metals from the active cathode materials into the electrolyte solution at elevated temperatures. ...

Seo Hee Ju; Ik-Su Kang; Yoon-Sung Lee; Won-Kyung Shin; Saheum Kim; Kyomin Shin; Dong-Won Kim

2014-01-24T23:59:59.000Z

372

Batteries - Materials Processing and Manufacturing Breakout session  

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

Materials Processing and Manufacturing Materials Processing and Manufacturing Breakout Session #1 - Discussion of Performance Targets and Barriers Comments on the Achievability of the Targets * PHEV40 and AEV 100 possible with success in current R&D * Achievable with Li-ion manufacturing improvements and advanced chemistries in current Li-ion R&D * AEV300 more challenging * Requires manufacturing improvements and materials and chemistry improvements * Quantify benefits/ drawbacks of fast charging vs. increased electrode cost Barriers Interfering with Reaching the Targets * Materials cost * Need: Material synthesis in large quantities/ with increased impurities and broader size distributions or advanced manufacturing * Electrode thickness - manufacturing and performance * Separator cost/ performance/ safety

373

On the order of indeterminate moment problems Christian Berg and Ryszard Szwarc  

E-Print Network [OSTI]

On the order of indeterminate moment problems Christian Berg and Ryszard Szwarc October 3, 2013 a series of papers in the beginning of the 1990'ies, Ismail-Masson [16], Chihara-Ismail [12], Berg

Berg, Christian

374

Use of a moments method for the analysis of flux distributions in subcritical assemblies  

E-Print Network [OSTI]

A moments method has been developed for the analysis of flux distributions in subcritical neutron-multiplying assemblies. The method determines values of the asymptotic axial and radial buckling, and of the extrapolated ...

Cheng, Hsiang-Shou

1968-01-01T23:59:59.000Z

375

Perturbation-based moment equation approach for flow in heterogeneous porous media: applicability range  

E-Print Network [OSTI]

Texaco E&P Technology Company, San Ramon, CA 94583, USA b Hydrology, Geochemistry, and Geology Group MS T-resolution Monte Carlo simulation (MCS) and low-order numerical solutions of stochastic moment equations (SMEs

Zhang, Dongxiao

376

Energy Dependence of Solar Neutrino Suppression and Bounds on the Neutrino Magnetic Moment  

E-Print Network [OSTI]

An analysis of neutrino electron scattering as applied to the SuperKamiokande solar neutrino experiment with the data from the Homestake experiment leads to an upper bound on the neutrino magnetic moment in the range $\\mu_{\

Joao Pulido; Ana M. Mourao

1998-03-02T23:59:59.000Z

377

Magentic Moment of the +-Resonance via p po Crystal Ball, TAPS collaborations  

E-Print Network [OSTI]

Magentic Moment of the +-Resonance via p po Crystal Ball, TAPS collaborations Introduction Experiment Results Conclusions PhD theses of: B. Boillat, Basel E. Downie, Glasgow S. Schumann, Mainz B

Krusche, Bernd

378

Make it a double? Sobering results from simulations using single-moment microphysics schemes  

Science Journals Connector (OSTI)

Single-moment microphysics schemes have long enjoyed popularity for their simplicity and efficiency. However, in this article it is argued through theoretical considerations, idealized thunderstorm simulations, and radiative-convective equilibrium ...

Adele L. Igel; Matthew R. Igel; Susan C. van den Heever

379

Decline of the current quadrupole moment during the merger phase of binary black hole coalescence  

E-Print Network [OSTI]

Utilizing the tools of tendex and vortex, we study the highly dynamic plunge and merger phases of several $\\pi$-symmetric binary black hole coalescences. In particular, we observe a decline of the strength of the current quadrupole moment as compared to that of the mass quadrupole moment during the merger phase, contrary to a naive estimate according to the dependence of these moments on the separation between the black holes. We further show that this decline of the current quadrupole moment is achieved through the remnants of the two individual spins becoming nearly aligned or anti-aligned with the total angular momentum. We also speculate on the implication of our observations for achieving a consistency between the electric and magnetic parity quasinormal modes.

Fan Zhang

2014-03-03T23:59:59.000Z

380

Functional Materials for Energy | Advanced Materials | ORNL  

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

Energy Storage Fuel Cells Thermoelectrics Separations Materials Catalysis Sensor Materials Polymers and Composites Carbon Fiber Related Research Chemistry and Physics at Interfaces Materials Synthesis from Atoms to Systems Materials Characterization Materials Theory and Simulation Energy Frontier Research Centers Advanced Materials Home | Science & Discovery | Advanced Materials | Research Areas | Functional Materials for Energy SHARE Functional Materials for Energy The concept of functional materials for energy occupies a very prominent position in ORNL's research and more broadly the scientific research sponsored by DOE's Basic Energy Sciences. These materials facilitate the capture and transformation of energy, the storage of energy or the efficient release and utilization of stored energy. A different kind of

Note: This page contains sample records for the topic "momentive performance materials" 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

Optimal open-loop and feedback control of spacecraft using single gimbal control moment gyroscopes  

E-Print Network [OSTI]

OPTIMAL OPEN-LOOP AND FEEDBACK CONTROL OF SPACECRAFT USING SINGLE GIMBAL CONTROL MOMENT GYROSCOPES A Thesis by Brian Ray Hoelscher Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirement... for the degree of MASTER OF SCIENCE December 1992 Major Subject: Aerospace Engineering OPTIMAL OPEN-LOOP AND FEEDBACK CONTROL OF SPACECRAFT USING SINGLE GIMBAL CONTROL MOMENT GYROSCOPES A Thesis by Brian Ray Hoelscher Approved as to style and content by...

Hoelscher, Brian Ray

2012-06-07T23:59:59.000Z

382

Scientists Connect Thermoelectric Materials and Topological Insulators...  

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

and relativity in combination produce a unique conducting state on the surface. Excellent thermoelectric performance depends on a material having both high conductivity and high...

383

The Advancements of Cementitious Materials Through Nanotechnology.  

E-Print Network [OSTI]

??A literature review on the influence of the advancements in nanotechnology on the properties and performance of cementitious materials is presented. The manufacturing, chemistry and (more)

Vegesna, Mohana M 1992-

2013-01-01T23:59:59.000Z

384

The advancements of cementitious materials through nanotechnology.  

E-Print Network [OSTI]

??A literature review on the influence of the advancements in nanotechnology on the properties and performance of cementitious materials is presented. The manufacturing, chemistry and (more)

Vegesna, Mohana M.

2013-01-01T23:59:59.000Z

385

Materials Science and Engineering Onsite Research  

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

systems. R&D 070, November 2011 Research facilities include the Severe Environment Corrosion Erosion Research Facility (SECERF) for assessing materials performance in a variety...

386

Sandia National Laboratories: Research: Materials Science: About...  

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

our products will perform in demanding missions over time. We must understand the fundamentals of the materials involved - over time and in demanding environments....

387

Materials Characterization Laboratory (Fact Sheet), NREL (National...  

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

Laboratory will cover multiple analytical operations, with the overall goal of troubleshooting synthetic materials or process streams to improve performance. Having...

388

Materials Under Extremes | ORNL  

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

Home | Science & Discovery | Advanced Materials | Research Areas | Materials Under Extremes SHARE Materials Under Extremes Materials that can withstand extreme conditions such...

389

Verification of Ni magnetic moment in GdNi2 Laves phase by magnetic circular dichroism measurement  

Science Journals Connector (OSTI)

Investigation of the magnetic moment of nickel in the polycrystal GdNi2 Laves phase was carried out by means of magnetic circular dichroism (MCD) in the core-level x-ray-absorption spectroscopy. It was revealed that the nickel magnetic moment originating from the 3d state (band) does exist and couples antiparallel to that of gadolinium whose MCD was observed at the M4,5 absorption edge. That is, nickel retains an intrinsic magnetic moment even in the Laves phase concentration. Furthermore, by analyzing in terms of sum rule, the contribution of spin and orbital magnetic moments to the magnetic moment was evaluated and discussed.

M. Mizumaki; K. Yano; I. Umehara; F. Ishikawa; K. Sato; A. Koizumi; N. Sakai; T. Muro

2003-04-09T23:59:59.000Z

390

A composite material of uniformly dispersed sulfur on reduced graphene oxide: Aqueous one-pot synthesis, characterization and excellent performance as the cathode in rechargeable lithium-sulfur batteries  

Science Journals Connector (OSTI)

Sulfur-reduced graphene oxide composite (SGC) materials with uniformly dispersed sulfur on reduced graphene oxide sheets have been prepared by a ... the simultaneous oxidation of sulfide and reduction of graphene

Hui Sun; Gui-Liang Xu; Yue-Feng Xu; Shi-Gang Sun; Xinfeng Zhang

2012-10-01T23:59:59.000Z

391

Magnetic moment of hyperons in nuclear matter by using quark-meson coupling models  

E-Print Network [OSTI]

We calculate the magnetic moments of hyperons in dense nuclear matter by using relativistic quark models. Hyperons are treated as MIT bags, and the interactions are considered to be mediated by the exchange of scalar and vector mesons which are approximated as mean fields. Model dependence is investigated by using the quark-meson coupling model and the modified quark-meson coupling model; in the former the bag constant is independent of density and in the latter it depends on density. Both models give us the magnitudes of the magnetic moments increasing with density for most octet baryons. But there is a considerable model dependence in the values of the magnetic moments in dense medium. The magnetic moments at the nuclear saturation density calculated by the quark meson coupling model are only a few percents larger than those in free space, but the magnetic moments from the modified quark meson coupling model increase more than 10% for most hyperons. The correlations between the bag radius of hyperons and the magnetic moments of hyperons in dense matter are discussed.

C. Y. Ryu; C. H. Hyun; T. -S. Park; S. W. Hong

2008-06-06T23:59:59.000Z

392

ATS materials support  

SciTech Connect (OSTI)

The technology based portion of the Advanced Turbine System Program (ATS) contains several subelements which address generic technology issues for land-base gas turbine systems. One subelement is the Materials/Manufacturing Technology Program which is coordinated by DOE-Oak Ridge Operations and Oak Ridge National laboratory (ORNL) for the Department of Energy. The work in this subelement is being performed predominantly by industry with assistance from national laboratories and universities. Projects in this subelement are aimed toward hastening the incorporation of new materials and components in gas turbines. The materials manufacturing subelement was developed with input from gas turbine manufacturers, material suppliers, government laboratories and universities. Work is currently ongoing on thermal barrier coatings (TBCs), the scale-up of single-crystal airfoil manufacturing technologies, materials characterization and technology information exchange. Westinghouse Power Generation and Pratt and Whitney each have material programs to develop dependable TBCs that enable increased turbine inlet temperatures while maintaining airfoil substrate temperatures at levels to meet the ATS life goals. Howmet and PCC Airfoils each have projects to extend the capability of single-crystal complex-cored airfoil technology to larger sizes so that higher turbine inlet temperatures can be attained in land-based turbines in a cost-effective manner. Materials characterization tasks are ongoing on TBCs in support of the industrial projects. In addition, a project on long-term testing of ceramics and ceramic-matrix composites for gas turbines is being conducted in support of programs at Solar Turbines, Allison Engines, and Westinghouse Power Generation.

Karnitz, M.A.; Wright, I.G.; Ferber, M.K.; Holcomb, R.S. [Oak Ridge National Lab., TN (United States); Rawlins, M.H. [Dept. of Energy, Oak Ridge, TN (United States)

1996-12-31T23:59:59.000Z

393

EM Research - Argonne National Laboratories, Materials Sicence Division  

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

Research Research Emerging Materials Recent Highlights Overview: This program emphasizes materials synthesis and processing, advanced characterizations and studies of materials properties, all aimed at a fundamental understanding of materials that have potential for applications. Currently the program concentrates on complex oxides with two connected goals: Understanding the complex interrelationship between charge and spin degrees of freedom and with crystal structure Understanding the proximity interactions which occur when an oxide shares a common boundary with a metal or other oxides. Recent highlights: Quantum Spins Mimic Refrigerator Magnets quantum spins October 11, 2012 The behavior of magnetic moments in metal oxides such as iridates is dominated by strong spin-orbit coupling effects. In layered compounds such as Sr3Ir2O7, the direction of these moments is controlled at the quantum level by dipolar interactions that are akin to those of classical bar magnets. From a functional standpoint, our findings suggest novel routes toward engineered structures that allow manipulation of moments without magnetic fields, a general strategy for future low-power electronics platforms.

394

A high dynamic range data acquisition system for a solid-state electron Electric Dipole Moment experiment  

E-Print Network [OSTI]

We have built a high precision (24-bit) data acquisition (DAQ) system with eight simultaneously sampling input channels for the measurement of the electric dipole moment (EDM) of the electron. The DAQ system consists of two main components, a master board and eight individual analog-to-digital converter (ADC) boards. This custom DAQ system provides galvanic isolation, with fiber optic communication, between the master board and each ADC board to reduce the possibility of ground loop pickups. In addition, each ADC board is enclosed in its own heavy-duty radio frequency shielding enclosure and powered by DC batteries, to attain the ultimate low levels of channel cross-talk. In this paper, we describe the implementation of the DAQ system and scrutinize its performance.

Young Jin Kim; Brandon Kunkler; Chen-Yu Liu; Gerard Visser

2011-06-07T23:59:59.000Z

395

Consequences of omitting spin-orbit partner configurations on B(E2)'s and quadrupole moments in nuclei  

E-Print Network [OSTI]

Calculations of B(E2)'s and quadruplole moments in the g_{9/2 region below ^{100} Sn are hampered by the fact that the inclusion of the g_{7/2}configuration leads to model spaces that are too large to handle. We therefore examine lighter nuclei if the fp region where one can easily include all the orbitals, f,{}_{7/2}, p_{3/2}, p_{1/2}and f_{5/2} . We perform such calculations but then take a step back and exclude the f_{5/2} orbital. By comparing the 2 calculations we can hope to get insight into the importance of the missing spin-orbit partner in other regions.

Zamick, Larry; Robinson, Shadow

2014-01-01T23:59:59.000Z

396

Critical Materials Workshop  

Broader source: Energy.gov [DOE]

Presentations during the Critical Materials Workshop held on April 3, 2012 overviewing critical materials strategies

397

Performance Monitoring  

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

Optimization Performance Monitoring Performance Monitoring A redirector page has been set up without anywhere to redirect to. Last edited: 2014-08-25 14:37:27...

398

Critical Materials Institute  

ScienceCinema (OSTI)

Ames Laboratory Director Alex King talks about the goals of the Critical Materials Institute in diversifying the supply of critical materials, developing substitute materials, developing tools and techniques for recycling critical materials, and forecasting materials needs to avoid future shortages.

Alex King

2013-06-05T23:59:59.000Z

399

Material transformation designing shape changing interfaces enabled by programmable material anisotropy  

E-Print Network [OSTI]

This thesis takes a material perspective on designing transformable interfaces. The structure of material and mechanical properties such as stiffness, can determine not only its static performances, but also, with the help ...

Ou, Jifei

2014-01-01T23:59:59.000Z

400

Electrochemical performance and thermal stability of GaF3-coated LiNi0.5Mn1.5O4 as 5V cathode materials for lithium ion batteries  

Science Journals Connector (OSTI)

Electrodes were prepared by pressing a mixture of 85% active materials, 10% acetylene black, and 5...?1 LiPF6...dissolved in EC:EMC:DMC (1:1:1 by volume). 2016 coin-type cells were assembled in a glove box and ...

Y. Y. Huang; X. L. Zeng; C. Zhou; P. Wu; D. G. Tong

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "momentive performance materials" 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

Magnetic moment of Ag104m and the hyperfine magnetic field of Ag in Fe using nuclear magnetic resonance on oriented nuclei  

Science Journals Connector (OSTI)

Nuclear magnetic resonance (NMR/ON) measurements with ?- and ?-ray detection have been performed on oriented Ag104g,m nuclei with the NICOLE He3-He4 dilution refrigerator setup at ISOLDE/CERN. For Ag104g (I?=5+) the ?-NMR/ON resonance signal was found at ?=266.70(5) MHz. Combining this result with the known magnetic moment for this isotope, the magnetic hyperfine field of Ag impurities in an Fe host at low temperature (<1 K) is found to be |Bhf(AgFe)|=44.709(35) T. A detailed analysis of other relevant data available in the literature yields three more values for this hyperfine field. Averaging all four values yields a new and precise value for the hyperfine field of Ag in Fe; that is, |Bhf(AgFe)|=44.692(30) T. For Ag104m (I?=2+), the anisotropy of the ? particles provided the NMR/ON resonance signal at ?=627.7(4) MHz. Using the new value for the hyperfine field of Ag in Fe, this frequency corresponds to the magnetic moment ?(Ag104m)=+3.691(3) ?N, which is significantly more precise than previous results. The magnetic moments of the even-A Ag102-110 isotopes are discussed in view of the competition between the (?g9/2)7/2+-3(?d5/2?g7/2)5/2+ and the (?g9/2)9/2+-3(?d5/2?g7/2)5/2+ configurations. The magnetic moments of the ground and isomeric states of Ag104 can be explained by an almost complete mixing of these two configurations.

V. V. Golovko; I. S. Kraev; T. Phalet; B. Delaur; M. Beck; V. Yu. Kozlov; S. Coeck; F. Wauters; P. Herzog; Ch. Tramm; D. Zkouck; D. Vnos; D. Srnka; M. Honusek; U. Kster; N. Severijns

2010-05-28T23:59:59.000Z

402

CONFERENCE PROCEEDINGS Low-dimensional thermoelectric materials  

E-Print Network [OSTI]

CONFERENCE PROCEEDINGS Low-dimensional thermoelectric materials M. S. Dresselhaus Department of low dimensional thermoelectric materials for enhanced performance is reviewed, with particular-dimensional thermoelectric material is discussed. © 1999 American Institute of Physics. S1063-7834 99 00105-7 Professor Abram

Cronin, Steve

403

Gas storage materials, including hydrogen storage materials  

DOE Patents [OSTI]

A material for the storage and release of gases comprises a plurality of hollow elements, each hollow element comprising a porous wall enclosing an interior cavity, the interior cavity including structures of a solid-state storage material. In particular examples, the storage material is a hydrogen storage material, such as a solid state hydride. An improved method for forming such materials includes the solution diffusion of a storage material solution through a porous wall of a hollow element into an interior cavity.

Mohtadi, Rana F; Wicks, George G; Heung, Leung K; Nakamura, Kenji

2014-11-25T23:59:59.000Z

404

Nuclear Material Control and Accountability  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

This Order establishes performance objectives, metrics, and requirements for developing, implementing, and maintaining a nuclear material control and accountability program within DOE/NNSA and for DOE-owned materials at other facilities that are exempt from licensing by the Nuclear Regulatory Commission. Cancels DOE M 470.4-6, Admin Chg 1, 8-26-05. Admin Chg 2, dated 11-19-12, cancels DOE M 474.2 Admin Chg 1.

2011-06-27T23:59:59.000Z

405

Probing CP violation with the electric dipole moment of atomic mercury  

E-Print Network [OSTI]

The electric dipole moment of atomic $^{199}$Hg induced by the nuclear Schiff moment and tensor-pseudotensor electron-nucleus interactions has been calculated. For this, we have developed and employed a novel method based on the relativistic coupled-cluster theory. The results of our theoretical calculations combined with the latest experimental result of $^{199}$Hg electric dipole moment, provide new bounds on the T reversal or CP violation parameters $\\theta_{\\rm QCD}$, the tensor-pseudotensor coupling constant $C_T$ and $(\\widetilde{d}_u - \\widetilde{d}_d)$. This is the most accurate calculation of these parameters to date. We highlight the the crucial role of electron correlation effects in their interplay with the P,T violating interactions. Our results demonstrate substantial changes in the results of earlier calculations of these parameters which can be attributed to the more accurate inclusion of important correlation effects in the present work.

K. V. P. Latha; D. Angom; B. P. Das; D. Mukherjee

2009-02-27T23:59:59.000Z

406

Far-infrared rotational spectrum of HD: Line shape, dipole moment, and collisional interference  

Science Journals Connector (OSTI)

The rotational transitions R(0) to R(3) in pure HD gas have been studied in absorption with 0.06-cm-1 resolution at densities from 2 to 68 amagat at 295 K. The permanent dipole moment of HD was found to be 8.83(28), 7.94(2), 7.88(3), and 8.43(10) for R(0) to R(3), respectively, in units of 10-4 D. These are in general agreement with ab initio calculations except for an unpredicted strong rotational state dependence. Collisional interference was observed and the interference parameter, proportional to the ratio of the average induced dipole moment to the allowed moment, is negative for R(0) and R(1), positive for R(2) and R(3), and of a magnitude consistent with calculation. Comparisons are made with earlier work, particularly that of McKellar [Can. J. Phys. 64, 227 (1986)].

P. G. Drakopoulos and G. C. Tabisz

1987-12-15T23:59:59.000Z

407

Digital discrimination of neutrons and gamma-rays in organic scintillation detectors using moment analysis  

SciTech Connect (OSTI)

Digital discrimination of neutron and gamma-ray events in an organic scintillator has been investigated by moment analysis. Signals induced by an americium-beryllium (Am/Be) isotropic neutron source in a stilbene crystal detector have been sampled with a flash analogue-to-digital converter (ADC) of 1 GSamples/s sampling rate and 10-bit vertical resolution. Neutrons and gamma-rays have been successfully discriminated with a threshold corresponding to gamma-ray energy about 217 keV. Moment analysis has also been verified against the results assessed by a time-of-flight (TOF) measurement. It is shown that the classification of neutrons and gamma-rays afforded by moment analysis is consistent with that achieved by digital TOF measurement. This method has been applied to analyze the data acquired from the stilbene crystal detector in mixed radiation field of the HL-2A tokamak deuterium plasma discharges and the results are described.

Xie Xufei; Zhang Xing; Yuan Xi; Chen Jinxiang; Li Xiangqing; Zhang Guohui; Fan Tieshuan [School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing (China); Yuan Guoliang; Yang Jinwei; Yang Qingwei [Southwestern Institute of Physics, Chengdu (China)

2012-09-15T23:59:59.000Z

408

FY 2009 Progress Report for Lightweighting Materials- 12. Materials Crosscutting Research and Development  

Broader source: Energy.gov [DOE]

The primary Lightweight Materials activity goal is to validate a cost-effective weight reduction in total vehicle weight while maintaining safety, performance, and reliability.

409

Enhanced thermoelectric performance of rough silicon nanowires  

E-Print Network [OSTI]

thermoelectric materials can increase ZT . 1 (refs 2­4), the materials (Bi, Te, Pb, Sb, and Ag) and processes thermoelectric material, by greatly redu- cing thermal conductivitywithout much affectingtheSeebeckcoef- ficient and electricalresistivity, Si nanowire arrays show promise as high-performance, scalable thermoelectric materials. The most

Yang, Peidong

410

Solar Thermal Reactor Materials Characterization  

SciTech Connect (OSTI)

Current research into hydrogen production through high temperature metal oxide water splitting cycles has created a need for robust high temperature materials. Such cycles are further enhanced by the use of concentrated solar energy as a power source. However, samples subjected to concentrated solar radiation exhibited lifetimes much shorter than expected. Characterization of the power and flux distributions representative of the High Flux Solar Furnace(HFSF) at the National Renewable Energy Laboratory(NREL) were compared to ray trace modeling of the facility. In addition, samples of candidate reactor materials were thermally cycled at the HFSF and tensile failure testing was performed to quantify material degradation. Thermal cycling tests have been completed on super alloy Haynes 214 samples and results indicate that maximum temperature plays a significant role in reduction of strength. The number of cycles was too small to establish long term failure trends for this material due to the high ductility of the material.

Lichty, P. R.; Scott, A. M.; Perkins, C. M.; Bingham, C.; Weimer, A. W.

2008-03-01T23:59:59.000Z

411

RADIATION EFFECTS IN MATERIAL MICROSTRUCTURE.  

SciTech Connect (OSTI)

Next generation nuclear power systems, high-power particle accelerators and space technology will inevitably rely on higher performance materials that will be able to function in the extreme environments of high irradiation, high temperatures, corrosion and stress. The ability of any material to maintain its functionality under exposure to harsh conditions is directly linked to the material structure at the nano- and micro-scales. Understanding of the underlying processes is key to the success of such undertakings. This paper presents experimental results of the effects of radiation exposure on several unique alloys, composites and crystals through induced changes in the physio-mechanical macroscopic properties.

SIMOS,N.

2007-05-30T23:59:59.000Z

412

Search for a permanent electric dipole moment using liquid 129Xe  

SciTech Connect (OSTI)

Search for an electric dipole moment is one of the best motivated low-energy approaches for investigating physics beyond the Standard Model. Our experimental effort is focused on improving the limit on EDM in liquid 129Xe to put constraints on nuclear CP-violating interactions. High nuclear spin density and high electrical breakdown strength make 129Xe a promising medium for EDM searches. At the time the project started, the transverse nuclear spin relaxation time T2 of 129Xe was unknown. We made measurements of T2 using NMR spin-echo techniques and found that it is exceeds 1300 sec, the longest relaxation time ever measured in a liquid [1]. We also began to investigate non-linear dipolar interaction effects in a high-density spin-polarized liquid Xe. In the second iteration of the experiment we setup a high-Tc SQUID system in magnetic shields and performed detailed studies of Xe spin precession. We developed a model for non-linear dipolar interactions and found that for one set of conditions non-linear interactions can delay spin dephasing due to magnetic field gradients, while for another set of conditions they can lead to exponential amplification of the spin precession signals [2]. Our experimental data were in good quantitative agreement with predictions of the model. We also developed a series of numerical simulations to understand various imperfections in the system and made detailed experimental measurements to confirm these numerical predictions [3]. We demonstrated that non-linear interactions can amplify small precession signals and achieved an amplification factor of 10 [4]. This general phenomenon can be used in other precision measurements with non-linear interactions. We also explored practical applications of the liquid Xe system that we developed. We demonstrated that by mixing Xe with organic liquids, such as cyclopentane, one can enhance the proton spin polarization by a factor of 106 [5]. We have used this technique to perform the first measurement of the scalar J-coupling between nuclear spins in van-der-Waals molecules, something that has never been observed before. More recently, we constructed a liquid-He apparatus to acquire Xe spin precession data using a low-Tc SQUID and achieved a signal-to-noise ratio of 106. We are currently investigating factors affecting the stability of Xe spin precession signals in this system using a superconducting magnetic shield and a persistent current magnetic field coil.

PROFESSOR MICHAEL ROMALIS

2008-11-24T23:59:59.000Z

413

Multi Material Paradigm  

Energy Savers [EERE]

Multi Material Paradigm Glenn S. Daehn Department of Materials Science and Engineering, The Ohio State University Advanced Composites (FRP) Steel Spaceframe Multi Material Concept...

414

Electric dipole moments of charged leptons in the split fermion scenario in the two Higgs doublet model  

E-Print Network [OSTI]

We predict the charged lepton electric dipole moments in the split fermion scenario in the framework of the two Higgs doublet model. We observe that the numerical value of the muon (tau) electric dipole moment is at the order of the magnitude of $10^{-22} (e-cm)$ ($10^{-20} (e-cm)$) and there is an enhancement in the case of two extra dimensions, especially for the tau lepton electric dipole moment.

E. O. Iltan

2005-09-24T23:59:59.000Z

415

Jumps and stochastic volatility in crude oil futures prices using conditional moments of integrated volatility  

Science Journals Connector (OSTI)

Abstract We evaluate alternative models of the volatility of commodity futures prices based on high-frequency intraday data from the crude oil futures markets for the October 2001December 2012 period. These models are implemented with a simple GMM estimator that matches sample moments of the realized volatility to the corresponding population moments of the integrated volatility. Models incorporating both stochastic volatility and jumps in the returns series are compared on the basis of the overall fit of the data over the full sample period and subsamples. We also find that jumps in the returns series add to the accuracy of volatility forecasts.

Christopher F. Baum; Paola Zerilli

2014-01-01T23:59:59.000Z

416

Improved convergence of Monte Carlo generated multi-group scattering moments  

SciTech Connect (OSTI)

This paper introduces an improved method of obtaining multi-group scattering moments from a Monte Carlo neutron transport code for use in deterministic transport solvers. The new method increases the information obtained from scattering events and therefore has more useful convergence characteristics than the currently used analog techniques. A prototype of the improved method was implemented in the OpenMC Monte Carlo transport code to compare the accuracy and convergence characteristics of the new method. The prototype showed that accuracy was retained (or improved) while increasing the figure-of-merit for the generation of multi-group scattering moments. (authors)

Nelson, A. G.; Martin, W. R. [University of Michigan, Department of Nuclear Engineering and Radiological Sciences, 2355 Bonisteel Boulevard, Ann Arbor, MI 48104 (United States)

2013-07-01T23:59:59.000Z

417

Intracollisional interference in the pure rotational spectrum of HD: Determination of the permanent electric dipole moment  

Science Journals Connector (OSTI)

The intensity of the pure rotational absorption spectrum of gaseous HD is measured as a function of density for pure HD and HD-He and HD-Ar mixtures. The decrease in the absorption coefficient with increasing density is consistent with a destructive intracollisional interference between the transitions involving the permanent and collision-induced dipole moments. The permanent dipole moment of the molecule in its ground vibrational state is found to be J dependent and in the range (8-10)10-4 D.

J. Bradley Nelson and G. C. Tabisz

1983-10-01T23:59:59.000Z

418

Message passing and moment closure for susceptible-infected-recovered epidemics on finite networks  

Science Journals Connector (OSTI)

The message passing approach of Karrer and Newman [Phys. Rev. E 82, 016101 (2010)] is an exact and practicable representation of susceptible-infected-recovered dynamics on finite trees. Here we show that, assuming Poisson contact processes, a pair-based moment-closure representation [Sharkey, J. Math. Biol. 57, 311 (2008)] can be derived from their equations. We extend the applicability of both representations and discuss their relative merits. On arbitrary time-independent networks, as was shown for the message passing formalism, the pair-based moment-closure equations also provide a rigorous lower bound on the expected number of susceptibles at all times.

Robert R. Wilkinson and Kieran J. Sharkey

2014-02-19T23:59:59.000Z

419

Muon anomalous magnetic moment due to the brane-stretching effect  

E-Print Network [OSTI]

We investigate the contribution of extra dimensions to the muon anomalous magnetic moment by using an ADD-type 6-dimensional model. This approach analyzes the extent of the influence of classical brane fluctuations on the magnetic moment. When we consider that the brane fluctuations are static in time, they add new potential terms to the Schr{\\"o}dinger equation through the induced vierbein. This paper shows that the brane fluctuation is responsible for the brane-stretching effect. This effect would be capable of reproducing the appropriate order for recent Brookhaven National Laboratory measurements of the muon (g-2) deviation.

Konosuke Sawa

2005-06-20T23:59:59.000Z

420

Octet baryon magnetic moments in the chiral quark model with configuration mixing  

Science Journals Connector (OSTI)

The ColemanGlashow sum-rule for magnetic moments is always fulfilled in the chiral quark model, independently of SU(3) symmetry breaking. This is due to the structure of the wave functions, coming from the non-relativistic quark model. Experimentally, the ColemanGlashow sum-rule is violated by about ten standard deviations. To overcome this problem, two models of wave functions with configuration mixing are studied. One of these models violates the ColemanGlashow sum-rule to the right degree and also reproduces the octet baryon magnetic moments rather accurately.

Johan Linde; Tommy Ohlsson; Hkan Snellman

1998-01-01T23:59:59.000Z

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


421

Performative architecture  

E-Print Network [OSTI]

The following thesis explores two central hypotheses. On the one hand it introduces the idea of performative architecture (performance in design), and has done so with the desire to contribute directly to the expansion of ...

Araya, Sergio (Sergio Alejandro)

2011-01-01T23:59:59.000Z

422

Nuclear Reactor Materials and Fuels  

Science Journals Connector (OSTI)

Nuclear reactor materials and fuels can be classified into six categories: Nuclear fuel materials Nuclear clad materials Nuclear coolant materials Nuclear poison materials Nuclear moderator materials

Dr. James S. Tulenko

2012-01-01T23:59:59.000Z

423

Irradiation Performance - Nuclear Engineering Division (Argonne)  

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

Materials Testing > Materials Testing > Irradiation Performance Capabilities Materials Testing Environmentally Assisted Cracking (EAC) of Reactor Materials Corrosion Performance/Metal Dusting Irradiated Materials Overview Light Water Reactor Materials Other Current Activities Future Directions 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 Irradiation Performance Bookmark and Share The activities of the Irradiation Performance Section (IPS) are aimed at determining and assessing normal-operation and accident behavior of neutron-irradiated material throughout the life cycle of the materials. The conditions of interest are normal in-reactor operation, design-basis accidents, intermediate storage in pools and dry casks, and ultimate

424

Coatings for performance retention  

Science Journals Connector (OSTI)

Performance and performance retention are becoming increasingly important in todays gas turbine engines. The military aircraft engine operator wants the flexibility and flight envelope that increased performance will give and the commercial useraircraft utility generation or pumperdemands the long term fuel economy that improved performance retention will provide. Materials advances have provided the intrinsic strength and temperature increases to push the capability of todays engines and coatings have been an integral part of that advancement. Specifically in the performance retention area coatings and seal systems have become increasingly important in both compressor and turbine components. It is the intent of this overview paper to present a brief review of the coating systems presently in use and in development and to consider areas in which the technology might be heading.

R. V. Hillery

1986-01-01T23:59:59.000Z

425

4f-local magnetic moments in the metals and alloys with SDW-instability  

E-Print Network [OSTI]

magnetic moments and itinerant electrons (RKKY-coupling) is modified by the additional coupling between-interac- tion but standard theory neglects the coupling between itinerant electrons, which leads to the magnetic electrons determines the type of magnetic order and AF structure wave vector Q for the local ( *) Permanent

Paris-Sud XI, Université de

426

A new moment-tensor decomposition for seismic events in anisotropic media  

Science Journals Connector (OSTI)

......any moment tensor in anisotropic media. A secondary...applied to sources in anisotropic media. Anisotropy is...Sedimentary rocks such as shales exhibit significant...Elastic anisotropy of shales,Leading Edge,30...Focal mechanisms in anisotropic media,Geophys. J......

C. H. Chapman; W. S. Leaney

2012-01-01T23:59:59.000Z

427

Magnetic moment and plasma environment of HD 209458b as determined from Ly? observations  

Science Journals Connector (OSTI)

...We assume the atmosphere of HD 209458b...consistent with atmospheric models...by the shaded area. One can...shows the thermal atmospheric atoms. Fig...the estimated plasma parameters are from the...209458b at 150 MHz (19). Proximity...not support a larger magnetic moment that exceeds...

Kristina G. Kislyakova; Mats Holmstrm; Helmut Lammer; Petra Odert; Maxim L. Khodachenko

2014-11-21T23:59:59.000Z

428

Maximum earthquake magnitudes in the Aegean area constrained by tectonic moment release rates  

Science Journals Connector (OSTI)

......smoothing (low-pass filtering) involved...seismic deformation rates are dominated by...tectonic moment release rate. This paper is published...seismometers at Cajon Pass, southern California...1996. Statistical physics, seismogenesis and...tectonic seismic release rates, Bull. seism......

G. Ch. Koravos; I. G. Main; T. M. Tsapanos; R. M. W. Musson

2003-01-01T23:59:59.000Z

429

Neutron star moment-of-inertia in the extended Zimanyi-Moszkowski model  

E-Print Network [OSTI]

Neutron star moment-of-inertia in the extended Zimanyi-Moszkowski model K. Miyazaki E-mail: miyazakiro@rio.odn.ne.jp Abstract We revisit the extended Zimanyi-Moszkowski (EZM) model of dense neutron observations of neutron stars (NSs) in RX J1856-3754 [2] and EXO 0748-676 [3] favor a sti¤ EOS. We are however

430

NASA marked a historic moment in the life of the nation's largest  

E-Print Network [OSTI]

NASA marked a historic moment in the life of the nation's largest rocket engine test complex the end of the Space Shuttle Program in 2010. Volume 1 Issue 10 www.nasa.gov/centers/stennis October 2006), Stephanie Wilson, Lisa Nowak and Piers Sellers meet with employees at NASA Stennis Space Center on Sept. 25

431

Pion Pole Contribution to Hadronic Light-By-Light Scattering and Muon Anomalous Magnetic Moment  

Science Journals Connector (OSTI)

We derive an analytic result for the pion pole contribution to the light-by-light scattering correction to the anomalous magnetic moment of the muon, a?=(g?-2)/2. Using the vector meson dominance model for the pion transition form factor, we obtain a?LBL,?0=+5610-11.

Ian Blokland; Andrzej Czarnecki; Kirill Melnikov

2002-01-31T23:59:59.000Z

432

Transient luminous events above two mesoscale convective systems: Charge moment change analysis  

E-Print Network [OSTI]

in a cloudtoground (CG) lightning flash [Pasko et al., 1996, 1997; Williams, 2001; Pasko, 2010]. Related to sprites] Charge moment change (DMQ) data were examined for 41 positive cloudtoground (+CG) lightning discharges afterward. Threedimensional lightning mapping data provided positions for the incloud components

Rutledge, Steven

433

The meteorology of negative cloud-to-ground lightning strokes with large charge moment changes: Implications  

E-Print Network [OSTI]

of the systems produced greater than 50% negative CG lightning, though flash rates tended to be low nearThe meteorology of negative cloud-to-ground lightning strokes with large charge moment changes the stroke (1­2 min?1 on average). The results suggest that negative sprite-parent/class lightning typically

Cummer, Steven A.

434

The meteorology of negative cloud-to-ground lightning strokes with large charge moment changes: Implications  

E-Print Network [OSTI]

% negative CG lightning, though flash rates tended to be low near the stroke (1­2 min?1 on averageThe meteorology of negative cloud-to-ground lightning strokes with large charge moment changes). The results suggest that negative sprite-parent/class lightning typically occurs in precipitation systems

Rutledge, Steven

435

Lightning morphology and impulse charge moment change of high peak current negative strokes  

E-Print Network [OSTI]

with two unusual flash types that both initially develop as positive (normal) intracloud lightning currents, and how is this variability connected to the in- cloud structure of lightning flashes? [3Lightning morphology and impulse charge moment change of high peak current negative strokes Gaopeng

Cummer, Steven A.

436

Environmental and Ecological Statistics 10, 455467, 2003 Moment and maximum likelihood  

E-Print Network [OSTI]

Environmental and Ecological Statistics 10, 455±467, 2003 Moment and maximum likelihood estimators are probability proportional to size methods. These methods are also referred to as size-biased because sampling are special cases of size-biased sampling where the probability weighting comes from a lineal or areal

437

Complexity penalized hydraulic fracture localization and moment tensor estimation under limited model information  

E-Print Network [OSTI]

In this paper we present a novel technique for micro-seismic localization using a group sparse penalization that is robust to the focal mechanism of the source and requires only a velocity model of the stratigraphy rather than a full Green's function model of the earth's response. In this technique we construct a set of perfect delta detector responses, one for each detector in the array, to a seismic event at a given location and impose a group sparsity across the array. This scheme is independent of the moment tensor and exploits the time compactness of the incident seismic signal. Furthermore we present a method for improving the inversion of the moment tensor and Green's function when the geometry of seismic array is limited. In particular we demonstrate that both Tikhonov regularization and truncated SVD can improve the recovery of the moment tensor and be robust to noise. We evaluate our algorithm on synthetic data and present error bounds for both estimation of the moment tensor as well as localization...

Ely, Gregory

2013-01-01T23:59:59.000Z

438

Strange and charm quark contributions to the anomalous magnetic moment of the muon  

E-Print Network [OSTI]

We describe a new technique to determine the contribution to the anomalous magnetic moment of the muon coming from the hadronic vacuum polarization using lattice QCD. Our method reconstructs the Adler function, using Pad\\'{e} approximants, from its derivatives at $q^2=0$ obtained simply and accurately from time-moments of the vector current-current correlator at zero spatial momentum. We test the method using strange quark correlators on large-volume gluon field configurations that include the effect of up and down (at physical masses), strange and charm quarks in the sea at multiple values of the lattice spacing and multiple volumes and show that 1% accuracy is achievable. For the charm quark contributions we use our previously determined moments with up, down and strange quarks in the sea on very fine lattices. We find the (connected) contribution to the anomalous moment from the strange quark vacuum polarization to be $a_\\mu^s = 53.41(59) \\times 10^{-10}$, and from charm to be $a_\\mu^c = 14.42(39)\\times 10^{-10}$. These are in good agreement with flavour-separated results from non-lattice methods, given caveats about the comparison. The extension of our method to the light quark contribution and to that from the quark-line disconnected diagram is straightforward.

Bipasha Chakraborty; C. T. H. Davies; G. C. Donald; R. J. Dowdall; J. Koponen; G. P. Lepage; T. Teubner

2014-03-07T23:59:59.000Z

439

Hadronic contributions to the muon anomalous magnetic moment Workshop. $(g-2)_?$: Quo vadis? Workshop. Mini proceedings  

E-Print Network [OSTI]

We present the mini-proceedings of the workshops Hadronic contributions to the muon anomalous magnetic moment: strategies for improvements of the accuracy of the theoretical prediction and $(g-2)_{\\mu}$: Quo vadis?, both held in Mainz from April 1$^{\\rm rst}$ to 5$^{\\rm th}$ and from April 7$^{\\rm th}$ to 10$^{\\rm th}$, 2014, respectively.

Maurice Benayoun; Johan Bijnens; Tom Blum; Irinel Caprini; Gilberto Colangelo; Henryk Czy?; Achim Denig; Cesareo A. Dominguez; Simon Eidelman; Christian S. Fischer; Paolo Gauzzi; Yuping Guo; Andreas Hafner; Masashi Hayakawa; Gregorio Herdoiza; Martin Hoferichter; Guangshun Huang; Karl Jansen; Fred Jegerlehner; Benedikt Kloss; Bastian Kubis; Zhiqing Liu; William Marciano; Pere Masjuan; Harvey B. Meyer; Tsutomu Mibe; Andreas Nyffeler; Vladimir Pascalutsa; Vladyslav Pauk; Michael R. Pennington; Santiago Peris; Christoph F. Redmer; Pablo Sanchez-Puertas; Boris Shwartz; Evgeny Solodov; Dominik Stoeckinger; Thomas Teubner; Marc Unverzagt; Marc Vanderhaeghen; Magnus Wolke

2014-07-14T23:59:59.000Z

440

Heart stopping moments with zebrafish: imaging inside the living, beating heart  

E-Print Network [OSTI]

Heart stopping moments with zebrafish: imaging inside the living, beating heart Seamless this application, enabling researchers to carry out precision "healing" studies on the moving heart by targeting of development Jonathan M. Taylor, Glasgow University d "Realtime Optical Gating for 3D Heart Imaging", Journal

Greenaway, Alan

Note: This page contains sample records for the topic "momentive performance materials" 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

Radiated seismic energy from coda measurements and no scaling in apparent stress with seismic moment  

E-Print Network [OSTI]

Radiated seismic energy from coda measurements and no scaling in apparent stress with seismic energy are consistent with independent measurements, where available. We find no dependence in individual seismic energy from coda measurements and no scaling in apparent stress with seismic moment, J. Geophys

Prieto, Germán A.

442

Leading-order hadronic contributions to the electron and tau anomalous magnetic moments  

E-Print Network [OSTI]

The leading hadronic contributions to the anomalous magnetic moments of the electron and the $\\tau$-lepton are determined by a four-flavour lattice QCD computation with twisted mass fermions. The continuum limit is taken and systematic uncertainties are quantified. Full agreement with results obtained by phenomenological analyses is found.

Burger, Florian; Jansen, Karl; Petschlies, Marcus

2015-01-01T23:59:59.000Z

443

LOCKING-FREE FINITE ELEMENT METHOD FOR A BENDING MOMENT FORMULATION OF TIMOSHENKO BEAMS  

E-Print Network [OSTI]

LOCKING-FREE FINITE ELEMENT METHOD FOR A BENDING MOMENT FORMULATION OF TIMOSHENKO BEAMS FELIPE LEPE for Timo- shenko beams. It is known that standard finite elements applied to this model lead to wrong results when the thickness of the beam t is small. Here, we consider a mixed formulation in terms

Rodríguez, Rodolfo

444

MOMENT-FREQUENCY DISTRIBUTION USED AS A CONSTRAINT FOR HYDRO-MECHANICAL  

E-Print Network [OSTI]

MOMENT-FREQUENCY DISTRIBUTION USED AS A CONSTRAINT FOR HYDRO-MECHANICAL MODELLING IN FRACTURE fractured rocks for EGS purposes is accompanied by microseismicity. From our numerical hydro are partly liberated and the resulting small sliding movements give rise to low frequency stress waves

Paris-Sud XI, Université de

445

A new multidimensional, energy-dependent two-moment transport code for neutrino-hydrodynamics  

E-Print Network [OSTI]

We present the new code ALCAR developed to model multidimensional, multi energy-group neutrino transport in the context of supernovae and neutron-star mergers. The algorithm solves the evolution equations of the 0th- and 1st-order angular moments of the specific intensity, supplemented by an algebraic relation for the 2nd-moment tensor to close the system. The scheme takes into account frame-dependent effects of order O(v/c) as well as the most important types of neutrino interactions. The transport scheme is significantly more efficient than a multidimensional solver of the Boltzmann equation, while it is more accurate and consistent than the flux-limited diffusion method. The finite-volume discretization of the essentially hyperbolic system of moment equations employs methods well-known from hydrodynamics. For the time integration of the potentially stiff moment equations we employ a scheme in which only the local source terms are treated implicitly, while the advection terms are kept explicit, thereby allo...

Just, Oliver; Janka, H -Thomas

2015-01-01T23:59:59.000Z

446

Improved explanation of human intelligence using cortical features with second order moments and regression  

Science Journals Connector (OSTI)

Background: Cortical features derived from magnetic resonance imaging (MRI) provide important information to account for human intelligence. Cortical thickness, surface area, sulcal depth, and mean curvature were considered to explain human intelligence. ... Keywords: Cortical features, Cortical thickness, Curvature, Human intelligence, Partial least squares regression, Second order moments, Sulcal depth, Surface area

Hyunjin Park, Jin-Ju Yang, Jongbum Seo, Yu-Yong Choi, Kun-Ho Lee, Jong-Min Lee

2014-04-01T23:59:59.000Z

447

Method for forming materials  

DOE Patents [OSTI]

A material-forming tool and a method for forming a material are described including a shank portion; a shoulder portion that releasably engages the shank portion; a pin that releasably engages the shoulder portion, wherein the pin defines a passageway; and a source of a material coupled in material flowing relation relative to the pin and wherein the material-forming tool is utilized in methodology that includes providing a first material; providing a second material, and placing the second material into contact with the first material; and locally plastically deforming the first material with the material-forming tool so as mix the first material and second material together to form a resulting material having characteristics different from the respective first and second materials.

Tolle, Charles R. (Idaho Falls, ID); Clark, Denis E. (Idaho Falls, ID); Smartt, Herschel B. (Idaho Falls, ID); Miller, Karen S. (Idaho Falls, ID)

2009-10-06T23:59:59.000Z

448

Explosives performance key to stockpile stewardship  

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

stewardship A new video shows how researchers use scientific guns to induce shock waves into explosive materials to study their performance and properties January 1, 2015...

449

Performance Characterization  

Broader source: Energy.gov [DOE]

Performance characterization efforts within the SunShot Systems Integration activities focus on collaborations with U.S. solar companies to:

450

NEWTON's Material Science References  

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

Material Science References Material Science References Do you have a great material science reference link? Please click our Ideas page. Featured Reference Links: Materials Research Society Materials Research Society The Materials Research Society has assembled many resources in its Materials Science Enthusiasts site. This site has information for the K-12 audience, general public, and materials science professionals. Material Science nanoHUB nanHUB.org is the place for nanotechnology research, education, and collaboration. There are Simulation Programs, Online Presentations, Courses, Learning Modules, Podcasts, Animations, Teaching Materials, and more. (Intened for high school and up) Materials Science Resources on the Web Materials Science Resources on the Web This site gives a good general introduction into material science. Sponsered by Iowa State, it talks about what material science is, ceramics and composites, and other topics.

451

Search for a Neutron Electric Dipole Moment at the SNS Brad Filippone (Caltech) for the nEDM@SNS collaboration  

E-Print Network [OSTI]

Search for a Neutron Electric Dipole Moment at the SNS Brad Filippone (Caltech) for the nEDM@SNS collaboration The discovery of a neutron EDM (Electric Dipole Moment) above the Standard Model background, which for an EDM of the neutron for over six decades. During this time the sensitivity has increased by nearly

452

THE MUON ANOMALOUS MAGNETIC MOMENT Updated July 2011 by A. Hoecker (CERN), and W.J. Marciano  

E-Print Network [OSTI]

� 1� THE MUON ANOMALOUS MAGNETIC MOMENT Updated July 2011 by A. Hoecker (CERN), and W.J. Marciano (BNL). The Dirac equation predicts a muon magnetic moment, M = g� e 2m� S, with gyromagnetic ratio g muon g - 2 reviews, see Refs. [3,4]. The E821 experiment at Brookhaven National Lab (BNL) studied

453

THE MUON ANOMALOUS MAGNETIC MOMENT Updated July 2011 by A. Hoecker (CERN), and W.J. Marciano  

E-Print Network [OSTI]

­ 1­ THE MUON ANOMALOUS MAGNETIC MOMENT Updated July 2011 by A. Hoecker (CERN), and W.J. Marciano (BNL). The Dirac equation predicts a muon magnetic moment, M = gµ e 2mµ S, with gyromagnetic ratio gµ muon g - 2 reviews, see Refs. [3,4]. The E821 experiment at Brookhaven National Lab (BNL) studied

454

IEEE TRANSACTIONS ON IMAGE PROCESSING, VOL. 5, NO. 3, MARCH 1996 459 A Moment-Based Variational Approach  

E-Print Network [OSTI]

, and in a linear fashion from given noisy and possibly sparse projection data. Moreover, thanks to the consistency properties of the Radon transform, this two-step approach (moment estimation followed by image reconstruction played by the moments of projection data, we immediately see the close connection between tomographic

Willsky, Alan S.

455

Watch it Live at 1pm: Secretary Chu Talks "Sputnik Moment" at Press Club |  

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

Watch it Live at 1pm: Secretary Chu Talks "Sputnik Moment" at Press Watch it Live at 1pm: Secretary Chu Talks "Sputnik Moment" at Press Club Watch it Live at 1pm: Secretary Chu Talks "Sputnik Moment" at Press Club November 29, 2010 - 11:39am Addthis At 1pm ET today, Secretary Chu will deliver a speech at the National Press Club in DC calling on the United States to sharply accelerate innovations in clean energy -- citing China and other countries' recent advances in clean technology as a critical "Sputnik Moment" for the U.S. The event will begin at 12:30, and Chu will deliver his remarks at 1, followed by a question and answer session. You'll be able to watch live online here. UPDATE: Follow along with Secretary Chu's "Energy Race/Sputnik Moment" powerpoint as he talks live at the Press Club right now. (PDF) , (PPT)

456

NREL: Energy Systems Integration Facility - High-Performance...  

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

High-Performance Computing and Analytics High-performance computing and analytic capabilities at the Energy Systems Integration Facility enable study and simulation of material...

457

Educational Material Science Games  

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

Material Science Games Material Science Games Do you have a great material science game? Please click our Ideas page. Featured Games: >KS2 Bitsize BBC - Materials KS2 Bitsize BBC - Materials Sponsored by the BBC, K2S Bitsize offers tons of free online science games including a section on materials. Learn about the changes in materials, changing states, heat, rocks, soils, solids, liquids, gases, and much more. Science Kids - Properties of Materials Science Kids - Properties of Materials Learn about the properties of materials as you experiment with a variety of objects in this great science activity for kids. Discover the interesting characteristics of materials; are they flexible, waterproof, strong or transparent? Characteristics of Materials - BBC Schools Characteristics of Materials - BBC Schools

458

Room temperature ferromagnetism in a phthalocyanine based carbon material  

SciTech Connect (OSTI)

We report on a simple method to fabricate a magnetic carbon material that contains nitrogen-coordinated transition metals and has a large magnetic moment. Highly chlorinated iron phthalocyanine was used as building blocks and potassium as a coupling reagent to uniformly disperse nitrogen-coordinated iron atoms on the phthalocyanine based carbon material. The iron phthalocyanine based carbon material exhibits ferromagnetic properties at room temperature and the ferromagnetic phase transition occurs at T{sub c}?=?490??10?K. Transmission electron microscopy observation, X-ray diffraction analysis, and the temperature dependence of magnetization suggest that the phthalocyanine molecules form three-dimensional random networks in the iron phthalocyanine based carbon material.

Honda, Z., E-mail: honda@fms.saitama-u.ac.jp; Sato, K.; Sakai, M.; Fukuda, T.; Kamata, N. [Graduate School of Science and Engineering, Saitama University, 255 Shimo-Okubo, Sakura-ku, Saitama 338-8570 (Japan); Hagiwara, M.; Kida, T. [KYOKUGEN (Center for Quantum Science and Technology under Extreme Conditions), Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka 560-8531 (Japan)

2014-02-07T23:59:59.000Z

459

Hong-060911 - Argonne National Laboratories, Materials Sicence Division  

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

Hong-060911 Hong-060911 MATERIALS SCIENCE COLLOQUIUM SPEAKER: Dr. Seungbum Hong Argonne National Laboratory Materials Science Division TITLE: "Visualization of Ferroelectric Domain Behavior Using Atomic Force Microscopy" DATE: Thursday, June 9, 2011 TIME: 11:00 a.m. PLACE: Building 212 / A-157 HOST: Anand Bhattacharya Refreshments will be served at 10:45 a.m. ABSTRACT: Ferroelectric materials possess spontaneous polarization - net electric dipole moment per unit volume, of which magnitude and direction determine the surface charge density, and of which direction can be switched by electric field larger than a threshold called coercive field. As polycrystalline materials have grains with different crystallographic orientations and various grain boundaries dividing those grains,

460

Research - Argonne National Laboratories, Materials Sicence Division  

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

Research Research Research Groups in the Materials Science Division Condensed Matter Theory Carries out theoretical work on superconductivity, electronic structure and magnetism. Emerging Materials Emphasizes an integrated materials synthesis and science program that focuses on correlated electron transition metal oxides, chalcogenides with enhanced thermoelectric performance, and novel superconductors, including pnictides and cuprates. Energy Conversion and Storage The energy conversion and storage group focuses on charge-transfer processes, as well as the chemical environment in the vicinity of electrode surfaces. Magnetic Films Research to develop, characterize and investigate the properties of magnetic thin films and superlattices. Molecular Materials Synthesis and characterization of molecular materials that have novel

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


461

Commercial Performance  

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

Commercial Performance Commercial Performance Objectives: To review the market potential for improvements in commercial building glazings, quantify the energy savings potentials, explore potential design solutions, and develop guidelines and tools for building designers so that systems are specified and used in an optimal manner. A special emphasis is placed on the daylighting performance of glazings in commercial buildings since lighting is the single largest energy end use and daylighting can improve both visual performance and the quality of the indoor space as well as saving energy. Technical Approach: This project has two major complementary elements. The first is the exploration and assessment of glazing performance in commercial buildings leading to development of design strategies that reduce unnecessary energy use. The final step is creating design guides and tools that make this design knowledge accessible to practitioners, typically carried out in partnership with others. Although the emphasis is energy impacts, e.g. annual energy use, the performance issues addressed in the guides and tools include all that impact the final glazing selection process, e.g. appearance, glare. The second element is an exploration of daylighting strategies for commercial buildings since lighting energy use is the major energy end use in most buildings. This work develops and evaluates new daylighting devices and designs, assesses performance in commercial buildings, and demonstrates system performance using test cells, test rooms and case study buildings. All energy-related aspects of the design solutions, as well as other critical performance issues, are addressed in this work. Results of this work are integrated into the guides and tools described above. Much of this work has been co-supported by utilities and has been carried on in conjunction with participants in an International Energy Agency Daylighting Task.

462

Radioactive material package seal tests  

SciTech Connect (OSTI)

General design or test performance requirements for radioactive materials (RAM) packages are specified in Title 10 of the US Code of Federal Regulations Part 71 (US Nuclear Regulatory Commission, 1983). The requirements for Type B packages provide a broad range of environments under which the system must contain the RAM without posing a threat to health or property. Seals that provide the containment system interface between the packaging body and the closure must function in both high- and low-temperature environments under dynamic and static conditions. A seal technology program, jointly funded by the US Department of Energy Office of Environmental Restoration and Waste Management (EM) and the Office of Civilian Radioactive Waste Management (OCRWM), was initiated at Sandia National Laboratories. Experiments were performed in this program to characterize the behavior of several static seal materials at low temperatures. Helium leak tests on face seals were used to compare the materials. Materials tested include butyl, neoprene, ethylene propylene, fluorosilicone, silicone, Eypel, Kalrez, Teflon, fluorocarbon, and Teflon/silicone composites. Because most elastomer O-ring applications are for hydraulic systems, manufacturer low-temperature ratings are based on methods that simulate this use. The seal materials tested in this program with a fixture similar to a RAM cask closure, with the exception of silicone S613-60, are not leak tight (1.0 {times} 10{sup {minus}7} std cm{sup 3}/s) at manufacturer low-temperature ratings. 8 refs., 3 figs., 1 tab.

Madsen, M.M.; Humphreys, D.L.; Edwards, K.R.

1990-01-01T23:59:59.000Z

463

Materials Challenges in Nuclear Energy  

SciTech Connect (OSTI)

Nuclear power currently provides about 13% of the worldwide electrical power, and has emerged as a reliable baseload source of electricity. A number of materials challenges must be successfully resolved for nuclear energy to continue to make further improvements in reliability, safety and economics. The operating environment for materials in current and proposed future nuclear energy systems is summarized, along with a description of materials used for the main operating components. Materials challenges associated with power uprates and extensions of the operating lifetimes of reactors are described. The three major materials challenges for the current and next generation of water-cooled fission reactors are centered on two structural materials aging degradation issues (corrosion and stress corrosion cracking of structural materials and neutron-induced embrittlement of reactor pressure vessels), along with improved fuel system reliability and accident tolerance issues. The major corrosion and stress corrosion cracking degradation mechanisms for light water reactors are reviewed. The materials degradation issues for the Zr alloy clad UO2 fuel system currently utilized in the majority of commercial nuclear power plants is discussed for normal and off-normal operating conditions. Looking to proposed future (Generation IV) fission and fusion energy systems, there are 5 key bulk radiation degradation effects (low temperature radiation hardening and embrittlement, radiation-induced and modified solute segregation and phase stability, irradiation creep, void swelling, and high temperature helium embrittlement) and a multitude of corrosion and stress corrosion cracking effects (including irradiation-assisted phenomena) that can have a major impact on the performance of structural materials.

Zinkle, Steven J [ORNL] [ORNL; Was, Gary [University of Michigan] [University of Michigan

2013-01-01T23:59:59.000Z

464

Performance Contracting  

E-Print Network [OSTI]

Performance Contracting ? A Resource for Energy Efficiency Projects Schneider Electric ? Buildings Business ? CATEE 2011 2 Top Challenges for Cities & Schools Tax Revenue Reductions Property values down, sales tax revenue down, etc Energy... issues and needs postponed Schneider Electric ? Buildings Business ? CATEE 2011 3 Performance Contracting can help? Tax Revenue Reductions Redirect funds already being spent on utilities Energy Price & Availability Issues Equip you with the tools...

Goodin, E.

2011-01-01T23:59:59.000Z

465

President Obama in North Carolina: "Our Generation's Sputnik Moment is  

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

in North Carolina: "Our Generation's Sputnik in North Carolina: "Our Generation's Sputnik Moment is Now" President Obama in North Carolina: "Our Generation's Sputnik Moment is Now" December 6, 2010 - 4:53pm Addthis Andy Oare Andy Oare Former New Media Strategist, Office of Public Affairs Ed. Note cross posted from the White House Blog. As America fights to recover from the economic catastrophe that began almost three years ago, it's important to remember that America had already been falling behind, and that as we rebuild, we have to rebuild even better than we were before. The President talked about his vision and his specific proposals at the Forsyth Technical Community College in Winston-Salem, North Carolina this afternoon: In 1957, just before this college opened, the Soviet Union beat us into

466

Probing top-Z dipole moments at the LHC and ILC  

E-Print Network [OSTI]

We investigate the weak electric and magnetic dipole moments of top quark-Z boson interactions at the Large Hadron Collider (LHC) and the International Linear Collider (ILC). Their vanishingly small magnitude in the Standard Model makes these couplings ideal for probing New Physics interactions and for exploring the role of top quarks in electroweak symmetry breaking. In our analysis, we consider the production of two top quarks in association with a Z boson at the LHC, and top quark pairs mediated by neutral gauge bosons at the ILC. These processes yield direct sensitivity to top quark-Z boson interactions and complement indirect constraints from electroweak precision data. Our computation is accurate to next-to-leading order in QCD, we include the full decay chain of top quarks and the Z boson, and account for theoretical uncertainties in our constraints. We find that LHC experiments will soon be able to probe weak dipole moments for the first time.

Raoul Rntsch; Markus Schulze

2015-01-23T23:59:59.000Z

467

Probing top-Z dipole moments at the LHC and ILC  

E-Print Network [OSTI]

We investigate the weak electric and magnetic dipole moments of top quark-Z boson interactions at the Large Hadron Collider (LHC) and the International Linear Collider (ILC). Their vanishingly small magnitude in the Standard Model makes these couplings ideal for probing New Physics interactions and for exploring the role of top quarks in electroweak symmetry breaking. In our analysis, we consider the production of two top quarks in association with a Z boson at the LHC, and top quark pairs mediated by neutral gauge bosons at the ILC. These processes yield direct sensitivity to top quark-Z boson interactions and complement indirect constraints from electroweak precision data. Our computation is accurate to next-to-leading order in QCD, we include the full decay chain of top quarks and the Z boson, and account for theoretical uncertainties in our constraints. We find that LHC experiments will soon be able to probe weak dipole moments for the first time.

Rntsch, Raoul

2015-01-01T23:59:59.000Z

468

Moment-Preserving SN Discretizations for the One-Dimensional Fokker-Planck Equation  

SciTech Connect (OSTI)

The Fokker-Planck equation: (1) Describes the transport and interactions of charged particles, (2) Many small-angle scattering collisions, (3) Asymptotic limit of the Boltzmann equation (Pomraning, 1992), and (4) The Boltzmann collision operator becomes the angular Laplacian. SN angular discretization: (1) Angular flux is collocated at the SN quadrature points, (2) The second-order derivatives in the Laplacian term must be discretized, and (3) Weighted finite-difference method preserves zeroth and first moments (Morel, 1985). Moment-preserving methods: (1) Collocate the Fokker-Planck operator at the SN quadrature points, (2) Develop several related and/or equivalent methods, and (3) Motivated by discretizations for the angular derivative appearing in the transport equation in one-dimensional spherical coordinates.

Warsa, James S. [Los Alamos National Laboratory; Prinja, Anil K. [Los Alamos National Laboratory

2012-06-14T23:59:59.000Z

469

Magnetic Moments of Delta and Omega^- Baryons with Dynamical Clover Fermions  

E-Print Network [OSTI]

We calculate the magnetic dipole moment of the Delta(1232) and Omega^- baryons with 2+1-flavors of clover fermions on anisotropic lattices using a background magnetic field. This is the first dynamical calculation of these magnetic moments using a background field technique. The calculation for Omega^- is done at the physical strange quark mass, with the result in units of the physical nuclear magneton mu_Omega^-= -1.93(8)(12) (where the first error is statistical and the second is systematic) compared to the experimental number: -2.02(5). The Delta has been studied at three unphysical quark masses, corresponding to pion mass m_pi = 366, 438, and 548 MeV. The pion mass dependence is compared with the behavior obtained from chiral effective field theory.

C. Aubin; K. Orginos; V. Pascalutsa; M. Vanderhaeghen

2008-11-17T23:59:59.000Z

470

Photon Magnetic Moment and Vacuum Magnetization in an Asymptotically Large Magnetic Field  

E-Print Network [OSTI]

We consider the effect of the photon radiative correction on the vacuum energy in a superstrong magnetic field. The notion of a photon anomalous magnetic moment is analyzed and its connection with the quasiparticle character of the electromagnetic radiation is established. In the infrared domain the magnetic moment turns out to be a vector with two orthogonal components in correspondence with the cylindrical symmetry imposed by the external field. The possibility of defining such quantity in the high energy limit is studied as well. Its existence suggests that the electromagnetic radiation is a source of magnetization to the whole vacuum and thus its electron-positron zero-point energy is slightly modified. The corresponding contribution to the vacuum magnetization density is determined by considering the individual contribution of each vacuum polarization eigenmode in the Euler-Heisenberg Lagrangian. A paramagnetic response is found in one of them, whereas the remaining ones are diamagnetic. Additional issues concerning the transverse pressures are analyzed.

Selym Villalba Chavez

2009-10-27T23:59:59.000Z

471

Electric dipole moment searches: reexamination of frequency shifts for particles in traps  

E-Print Network [OSTI]

In experiments searching for a nonzero electric dipole moment of trapped particles, frequency shifts correlated with an applied electric field can be interpreted as a false signal. One such effect, referred to as the geometric phase effect, is known to occur in a magnetic field that is nonperfectly homogeneous. The increase in sensitivity of experiments demands improved theoretical description of this effect. In the case of fast particles, like atoms at room temperature and low pressure, the validity of established theories was limited to a cylindrical confinement cell in a uniform gradient with cylindrical symmetry. We develop a more general theory valid for an arbitrary shape of the magnetic field as well as for arbitrary geometry of the confinement cell. Our improved theory is especially relevant for experiments measuring the neutron electric dipole moment with an atomic comagnetometer. In this context, we have reproduced and extended earlier numerical studies of the geometric phase effect induced by localized magnetic impurities.

Guillaume Pignol; Stephanie Roccia

2012-05-02T23:59:59.000Z

472

Magnetic Moments of 69-min Ag104 and 27-min Ag104m  

Science Journals Connector (OSTI)

The hyperfine structure separations of 69-min Ag104 and of 27-min Ag104m have been measured using the atomic beam magnetic resonance method. The results are: ??I=5(69-minAg104)=33 500-1000+2000 Mc/sec, ??I=2(27-minAg104m)=35 0002000 Mc/sec. The sign of the nuclear magnetic dipole moment has been found to be positive for both states, and by use of the Fermi-Segr formula one obtains ?I(I=5)=+4.0-0.1+0.2 nm, ?I(I=2)=+3.70.2 nm. Nuclear configurations which give these moments are discussed and we comment on the difference between Ag104 which shows a 2+, 5+ angular momentum recoupling doublet and Ag106 and Ag110 which show a 1+, 6+ doublet.

O. Ames; A. M. Bernstein; M. H. Brennan; D. R. Hamilton

1961-09-01T23:59:59.000Z

473

Model calculation of anisotropic charge and magnetic moment distribution on a Ni(001) surface  

Science Journals Connector (OSTI)

Anisotropies in the electronic charge and moment distribution on a (001) surface of Ni are influenced by the kinetic and Coulomb energies as well as by exchange and correlations. By using a simple model Hamiltonian the various contributions are analyzed. In particular we consider the effects of nonlocal exchange and correlation energies on the anisotropies. When we simulate a local exchange and correlation approximation, we find a decrease in the surface anisotropies (e.g., a moment in the 3z2-r2 orbital). The accompanying relative energy changes are very small, i.e., of the order of 10-4. The same holds true for anisotropies in the exchange splittings. A comparison is attempted between the results of the present model and recent ab initio calculations for the Ni surface in which the local-spin-density approximation is applied.

A. M. Oles and P. Fulde

1984-10-15T23:59:59.000Z

474

Modal Bin Hybrid Model: A Surface Area Consistent, Triple Moment Sectional Method for Use in Process-oriented Modeling of Atmospheric Aerosols  

SciTech Connect (OSTI)

A triple moment sectional method, Modal Bin Hybrid Model (MBHM), has been developed. In addition to number and mass (volume), surface area is predicted (and preserved), which is important for gas-to-particle mass transfer and light extinction cross section. The performance of MBHM was evaluated against double moment sectional (DMS) methods with various size resolutions up to BIN256 (BINx: x is number of sections over three orders of magnitude in size, ?logD = 3/x) for simulating evolution of particles under simultaneously occurring nucleation, condensation and coagulation processes. Because MBHM gives a physically consistent form of the intra-sectional distributions, errors and biases of MBHM at BIN4-8 resolution were almost equivalent to those of DMS at BIN16-32 resolution for various important variables such as the moments Mk (k: 0, 2, 3), dMk/dt, and the number and volume of particles larger than a certain diameter. Another important feature of MBHM is that only a single bin is adequate to simulate full aerosol dynamics for particles whose size distribution can be approximated by a single lognormal mode. This flexibility is useful for process-oriented (multi category and/or mixing state) modeling: primary aerosols whose size parameters would not differ substantially in time and space can be expressed by a single or a small number of modes, whereas secondary aerosols whose size changes drastically from one to several hundred nanometers can be expressed by a number of modes. Added dimensions can be applied to MBHM to represent mixing state or photo-chemical age for aerosol mixing state studies.

Kajino, Mizuo; Easter, Richard C.; Ghan, Steven J.

2013-09-10T23:59:59.000Z

475

Thermoelectric energy conversion using nanostructured materials  

E-Print Network [OSTI]

High performance thermoelectric materials in a wide range of temperatures are essential to broaden the application spectrum of thermoelectric devices. This paper presents experiments on the power and efficiency characteristics ...

Chen, Gang

476

Materials sciences programs, Fiscal year 1997  

SciTech Connect (OSTI)

The Division of Materials Sciences is responsible for basic research and research facilities in materials science topics important to the mission of the Department of Energy. The programmatic divisions under the Office of Basic Energy Sciences are Chemical Sciences, Engineering and Geosciences, and Energy Biosciences. Materials Science is an enabling technology. The performance parameters, economics, environmental acceptability and safety of all energy generation, conversion, transmission and conservation technologies are limited by the properties and behavior of materials. The Materials Sciences programs develop scientific understanding of the synergistic relationship among synthesis, processing, structure, properties, behavior, performance and other characteristics of materials. Emphasis is placed on the development of the capability to discover technologically, economically, and environmentally desirable new materials and processes, and the instruments and national user facilities necessary for achieving such progress. Materials Sciences subfields include: physical metallurgy, ceramics, polymers, solid state and condensed matter physics, materials chemistry, surface science and related disciplines where the emphasis is on the science of materials. This report includes program descriptions for 517 research programs including 255 at 14 DOE National Laboratories, 262 research grants (233 of which are at universities), and 29 Small Business Innovation Research Grants. Five cross-cutting indices located at the rear of this book identify all 517 programs according to principal investigator(s), materials, techniques, phenomena, and environment.

NONE

1998-10-01T23:59:59.000Z

477

Advanced Materials | ORNL  

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

Research Areas Research Areas Research Highlights Facilities and Capabilities Science to Energy Solutions News & Awards Events and Conferences Supporting Organizations Directionally Solidified Materials Using high-temperature optical floating zone furnace to produce monocrystalline molybdenum alloy micro-pillars Home | Science & Discovery | Advanced Materials Advanced Materials | Advanced Materials SHARE ORNL has the nation's most comprehensive materials research program and is a world leader in research that supports the development of advanced materials for energy generation, storage, and use. We have core strengths in three main areas: materials synthesis, characterization, and theory. In other words, we discover and make new materials, we study their structure,

478

MATERIALS TRANSFER AGREEMENT  

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

MTAXX-XXX 1 MATERIAL TRANSFER AGREEMENT for Manufacturing Demonstration Facility and Carbon Fiber Technology Facility In order for the RECIPIENT to obtain materials, the RECIPIENT...

479

Material Point Methods  

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

Material Point Methods and Multiphysics for Fracture and Multiphase Problems Joseph Teran, UCLA and Alice Koniges, LBL Contact: jteran@math.ucla.edu Material point methods (MPM)...

480

Materials | Department of Energy  

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

Materials Materials 2011 DOE Hydrogen and Fuel Cells Program, and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Vehicle Technologies Plenary...

Note: This page contains sample records for the topic "momentive performance materials" 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.


481

Energy Materials & Processes | EMSL  

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

in catalysts and energy materials needed to design new materials and systems for sustainable energy applications. By facilitating the development and rapid dissemination...

482

EMSL - Energy Materials & Processes  

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

in catalysts and energy materials needed to design new materials and systems for sustainable energy applications. By facilitating the development and rapid dissemination...

483

Mercury's moment of inertia from spin and gravity data Jean-Luc Margot,1,2  

E-Print Network [OSTI]

Mercury's moment of inertia from spin and gravity data Jean-Luc Margot,1,2 Stanton J. Peale,3 Sean of Mercury at 35 epochs between 2002 and 2012 reveal that its spin axis is tilted by (2.04 ? 0.08) arc min with respect to the orbit normal. The direction of the tilt suggests that Mercury is in or near a Cassini state

Hauck II, Steven A.

484

Magnetic moments of vector, axial, and tensor mesons in lattice QCD  

E-Print Network [OSTI]

We present a calculation of magnetic moments for selected spin-1 mesons using the techniques of lattice QCD. This is carried out by introducing progressively small static magnetic field on the lattice and measuring the linear response of a hadron's mass shift. The calculations are done on $24^4$ quenched lattices using standard Wilson actions, with $\\beta$=6.0 and pion mass down to 500 MeV. The results are compared to those from the form factor method where available.

F. X. Lee; S. Moerschbacher; W. Wilcox

2008-07-25T23:59:59.000Z

485

Magnetic Moment Density from Lack of Smoothness of the Ernst Potential  

E-Print Network [OSTI]

In this talk it is shown a way for constructing magnetic surface sources for stationary axisymmetric electrovac spacetimes possessing a non-smooth electromagnetic Ernst potential. The magnetic moment density is related to this lack of smoothness and its calculation involves solving a linear elliptic differential equation. As an application the results are used for constructing a magnetic source for the Kerr-Newman field.

L. Fernndez-Jambrina

2009-06-17T23:59:59.000Z

486

The electric dipole moment of the nucleon from simulations at imaginary vacuum angle theta  

E-Print Network [OSTI]

We compute the electric dipole moment of proton and neutron from lattice QCD simulations with N_f=2 flavors of dynamical quarks at imaginary vacuum angle theta. The calculation proceeds via the CP odd form factor F_3. A novel feature of our calculation is that we use partially twisted boundary conditions to extract F_3 at zero momentum transfer. As a byproduct, we test the QCD vacuum at nonvanishing theta.

R. Horsley; T. Izubuchi; Y. Nakamura; D. Pleiter; P. E. L. Rakow; G. Schierholz; J. Zanotti

2008-08-15T23:59:59.000Z

487

A Storage Ring Experiment to Detect a Proton Electric Dipole Moment  

E-Print Network [OSTI]

A new experiment is described to detect a permanent electric dipole moment of the proton with a sensitivity of $10^{-29}e\\cdot$cm by using polarized "magic" momentum $0.7$~GeV/c protons in an all-electric storage ring. Systematic errors relevant to the experiment are discussed and techniques to address them are presented. The measurement is sensitive to new physics beyond the Standard Model at the scale of 3000~TeV.

Anastassopoulos, V; Baartman, R; Bai, M; Baessler, S; Benante, J; Berz, M; Blaskiewicz, M; Bowcock, T; Brown, K; Casey, B; Conte, M; Crnkovic, J; Fanourakis, G; Fedotov, A; Fierlinger, P; Fischer, W; Gaisser, M O; Giomataris, Y; Grosse-Perdekamp, M; Guidoboni, G; Haciomeroglu, S; Hoffstaetter, G; Huang, H; Incagli, M; Ivanov, A; Kawall, D; Khazin, B; Kim, Y I; King, B; Koop, I A; Larsen, R; Lazarus, D M; Lebedev, V; Lee, M J; Lee, S; Lee, Y H; Lehrach, A; Lenisa, P; Sandri, P Levi; Luccio, A U; Lyapin, A; MacKay, W; Maier, R; Makino, K; Malitsky, N; Marciano, W J; Meng, W; Meot, F; Metodiev, E M; Miceli, L; Moricciani, D; Morse, W M; Nagaitsev, S; Nayak, S K; Orlov, Y F; Ozben, C S; Park, S T; Pesce, A; Pile, P; Polychronakos, V; Podobedov, B; Pretz, J; Ptitsyn, V; Ramberg, E; Raparia, D; Rathmann, F; Rescia, S; Roser, T; Sayed, H Kamal; Semertzidis, Y K; Senichev, Y; Sidorin, A; Silenko, A; Simos, N; Stahl, A; Stephenson, E J; Stroeher, H; Syphers, M J; Talman, J; Talman, R M; Tishchenko, V; Touramanis, C; Tsoupas, N; Venanzoni, G; Vetter, K; Vlassis, S; Won, E; Zavattini, G; Zelenski, A; Zioutas, K

2015-01-01T23:59:59.000Z

488

Nuclear Deformation and the Moment of Inertia of Nuclear Rotational States  

Science Journals Connector (OSTI)

Evidence concerning nuclear deformation from isotope shifts and from rotational states in even-even nuclei is compared for nuclei near neutron number 82. It is concluded that the moment of inertia of the rotational states is 41 times greater than the theory predicts, if the nuclear radius is 1.2010-13A13 cm, and if the interpretation of isotope shifts in terms of nuclear deformation is correct.

Kenneth W. Ford

1954-09-01T23:59:59.000Z

489

New Spectroscopic Determination of the Dipole Moment of HD in the Ground Vibrational State  

Science Journals Connector (OSTI)

The intensity of the pure rotational spectrum of gaseous HD is measured as a function of density to determine the dipole moment in the ground vibrational state. J-dependent values are found in the range (8.0-9.8) 10-4 D which, contrary to previous determinations of Trefler and Gush, agree reasonably with ab initio calculations. Intracollisional interference is taken into account and its J dependence determined.

J. Bradley Nelson and G. C. Tabisz

1982-05-17T23:59:59.000Z

490

Magnetic moments of light, charmed, and b-flavored baryons in a relativistic logarithmic potential  

Science Journals Connector (OSTI)

A simple independent-quark model based on the Dirac equation with logarithmic confining potential of the form V(r)=(1+?0)[a ln(r/b)] with a,b>0 is used to calculate the magnetic moments of light, charmed, and b-flavored baryons. Not only do the results obtained for light baryons agree reasonably well with experiment, but also the overall predictions for the charmed and b-flavored baryons compare very well with other model predictions.

S. N. Jena and D. P. Rath

1986-07-01T23:59:59.000Z

491

Direct high-precision measurement of the magnetic moment of the proton  

E-Print Network [OSTI]

The spin-magnetic moment of the proton $\\mu_p$ is a fundamental property of this particle. So far $\\mu_p$ has only been measured indirectly, analysing the spectrum of an atomic hydrogen maser in a magnetic field. Here, we report the direct high-precision measurement of the magnetic moment of a single proton using the double Penning-trap technique. We drive proton-spin quantum jumps by a magnetic radio-frequency field in a Penning trap with a homogeneous magnetic field. The induced spin-transitions are detected in a second trap with a strong superimposed magnetic inhomogeneity. This enables the measurement of the spin-flip probability as a function of the drive frequency. In each measurement the proton's cyclotron frequency is used to determine the magnetic field of the trap. From the normalized resonance curve, we extract the particle's magnetic moment in units of the nuclear magneton $\\mu_p=2.792847350(9)\\mu_N$. This measurement outperforms previous Penning trap measurements in terms of precision by a factor of about 760. It improves the precision of the forty year old indirect measurement, in which significant theoretical bound state corrections were required to obtain $\\mu_p$, by a factor of 3. By application of this method to the antiproton magnetic moment $\\mu_{\\bar{p}}$ the fractional precision of the recently reported value can be improved by a factor of at least 1000. Combined with the present result, this will provide a stringent test of matter/antimatter symmetry with baryons.

A. Mooser; S. Ulmer; K. Blaum; K. Franke; H. Kracke; C. Leiteritz; W. Quint; C. C. Rodegheri; C. Smorra; J. Walz

2014-06-18T23:59:59.000Z

492

Moment enhancement in dilute magnetic semiconductors: MnxSi1-x with x = 0.1%  

SciTech Connect (OSTI)

The experimentally determined magnetic moments/Mn, M, in Mn{sub x}Si{sub 1-x} are considered, with particular attention to the case with 5.0 {micro}{sub B}/Mn, obtained for x = 0.1%. The existing theoretical M values for neutral Mn range from 2.83 to 3.78 {micro}B/Mn. To understand the observed M = 5.0 {micro}{sub B}/Mn, we investigated Mn{sub x}Si{sub 1-x} for a series of Mn concentrations and defect configurations using a first-principles density functional method. We find a structure in which the moment is enhanced. It has 5.0 {micro}B/Mn, the Mn at a substitutional site, and a Si at a second-neighbor interstitial site in a large unit cell. Subsequent analysis shows that the observed large moment can be understood as a consequence of the weakened d-p hybridization resulting from the introduction of the second-neighbor interstitial Si and substantial isolation of the Mn-second-neighbor Si complex at such concentrations.

Shaughnessy, M; Fong, C Y; Snow, R; Liu, K; Pask, J E; Yang, L H

2009-03-12T23:59:59.000Z

493

Quadrupole moments of high spin isomers in Fr213, Fr212, and Fr211  

Science Journals Connector (OSTI)

The level mixing spectroscopy method has been applied to measure the static quadrupole moments of six isomeric states in Fr213, Fr212, and Fr211 (Z=87). For isomers with the proton configuration ?h9/24i13/2 a large increase of the quadrupole moment was observed with the removal of neutrons from the closed N=126 core: Q(29/2+,213Fr)=-70(7) e fm2, Q(15-,212Fr)=-80(12) e fm2, and Q(29/2+,211Fr)=-107(18) e fm2. Quadrupole moments for very high spin states were also measured: Q(65/2-,213Fr)=-219(53) e fm2, Q(27-,212Fr)=-152(31) e fm2, and Q(45/2-,211Fr) =-198(56) e fm2. The observed values are in good agreement with shell-model calculations, but are lower than that predicted using the deformed-independent particle model. The implantation behavior of Fr in a Tl host is also discussed.

F. Hardeman; G. Neyens; G. Scheveneels; R. Nouwen; G. Sheeren; M. Van Den Bergh; R. Coussement; A. P. Byrne; R. Msseler; H. Hbel; G. Baldsiefen

1991-02-01T23:59:59.000Z

494

2011 Annual Progress Report for Lightweighting Materials  

Broader source: Energy.gov [DOE]

As part of the U.S. Department of Energys (DOEs) Vehicle Technologies Program (VTP), the Lightweight Materials (LM) activity focuses on the development and validation of advanced materials and manufacturing technologies to significantly reduce light and heavy duty vehicle weight without compromising other attributes such as safety, performance, recyclability, and cost.

495

NEWTON's Material Science Videos  

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

Material Science Videos Material Science Videos Do you have a great material science video? Please click our Ideas page. Featured Videos: University of Maryland - Material Science University of Maryland - Material Science The Department of Materials Science and Engineering offers a set of videos about various topics in material science to help students understand what material science is. Learn about plasma, polymers, liquid crystals and much more. LearnersTV.com - Material Science LearnersTV.com - Material Science LearnersTV.com offers a series of educational material science lectures that are available to the public for free. Learn about topics like polymers, non-crystalline solids, crystal geometry, phase diagrams, phase transformations and more. NanoWerk - Nanotechnology Videos NanoWerk - Nanotechnology Videos

496

Energetic Materials Center Energetic Materials Center  

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

experimental characterization of energetic material properties and reactions; and high-speed diagnostic instruments for measuring the chemical and physical processes that occur...

497

Round-Robin Test of Paraffin Phase-Change Material  

Science Journals Connector (OSTI)

A round-robin test between three institutes was performed on a paraffin phase-change material (PCM) in the context of the German quality association for phase-change materials. The aim of the quality association ...

S. Vidi; H. Mehling; F. Hemberger; Th. Haussmann

2014-10-01T23:59:59.000Z

498

Experimental Study of Plasma Materials' Interaction in Plasma Focus Dena  

Science Journals Connector (OSTI)

It is widely recognized that plasma material interaction in fusion devices is a critical issue that affects the overall machine performance. The process of material selection with a low degradation effect on the ...

M. V. Roshan; M. Mahmoodi Darian

2003-03-01T23:59:59.000Z

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