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1

AP-XPS Measures MIEC Oxides in Action  

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

AP-XPS Measures MIEC Oxides in AP-XPS Measures MIEC Oxides in Action AP-XPS Measures MIEC Oxides in Action Print Wednesday, 25 May 2011 00:00 Oxide materials with mixed ionic-electronic conductivity (MIEC) can conduct both electrons and oxygen ions. MIEC oxides have broad applications, including use in solid-oxide fuel cells, high-temperature electrolysis for synthetic fuel production, and oxygen-separating membranes for chemical processes or NOx-free combustion; however, their surface activity under reaction conditions has been difficult, if not impossible, to ascertain, until recently. A team from the University of Maryland and Sandia National Laboratories joined ALS scientists on Beamlines 9.3.2 and 11.0.2 to overcome the vacuum limitations of conventional XPS instruments using ambient-pressure x-ray photoelectron spectroscopy (AP-XPS), providing the first in situ measurements of local surface oxidation states and electric potential in active MIEC electrodes.

2

AP-XPS Measures MIEC Oxides in Action  

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

AP-XPS Measures MIEC Oxides in Action Print AP-XPS Measures MIEC Oxides in Action Print Oxide materials with mixed ionic-electronic conductivity (MIEC) can conduct both electrons and oxygen ions. MIEC oxides have broad applications, including use in solid-oxide fuel cells, high-temperature electrolysis for synthetic fuel production, and oxygen-separating membranes for chemical processes or NOx-free combustion; however, their surface activity under reaction conditions has been difficult, if not impossible, to ascertain, until recently. A team from the University of Maryland and Sandia National Laboratories joined ALS scientists on Beamlines 9.3.2 and 11.0.2 to overcome the vacuum limitations of conventional XPS instruments using ambient-pressure x-ray photoelectron spectroscopy (AP-XPS), providing the first in situ measurements of local surface oxidation states and electric potential in active MIEC electrodes.

3

AP-XPS Measures MIEC Oxides in Action  

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

AP-XPS Measures MIEC Oxides in Action Print AP-XPS Measures MIEC Oxides in Action Print Oxide materials with mixed ionic-electronic conductivity (MIEC) can conduct both electrons and oxygen ions. MIEC oxides have broad applications, including use in solid-oxide fuel cells, high-temperature electrolysis for synthetic fuel production, and oxygen-separating membranes for chemical processes or NOx-free combustion; however, their surface activity under reaction conditions has been difficult, if not impossible, to ascertain, until recently. A team from the University of Maryland and Sandia National Laboratories joined ALS scientists on Beamlines 9.3.2 and 11.0.2 to overcome the vacuum limitations of conventional XPS instruments using ambient-pressure x-ray photoelectron spectroscopy (AP-XPS), providing the first in situ measurements of local surface oxidation states and electric potential in active MIEC electrodes.

4

AP-XPS Measures MIEC Oxides in Action  

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

AP-XPS Measures MIEC Oxides in Action Print AP-XPS Measures MIEC Oxides in Action Print Oxide materials with mixed ionic-electronic conductivity (MIEC) can conduct both electrons and oxygen ions. MIEC oxides have broad applications, including use in solid-oxide fuel cells, high-temperature electrolysis for synthetic fuel production, and oxygen-separating membranes for chemical processes or NOx-free combustion; however, their surface activity under reaction conditions has been difficult, if not impossible, to ascertain, until recently. A team from the University of Maryland and Sandia National Laboratories joined ALS scientists on Beamlines 9.3.2 and 11.0.2 to overcome the vacuum limitations of conventional XPS instruments using ambient-pressure x-ray photoelectron spectroscopy (AP-XPS), providing the first in situ measurements of local surface oxidation states and electric potential in active MIEC electrodes.

5

Obtaining Mixed Ionic/Electronic Conductivity in Perovskite Oxides in a Reducing Environment: A Computational Prediction for Doped SrTiO3  

SciTech Connect

The electronic conductivity and thermodynamic stability of mixed p- and n-doped SrTiO3 perovskites have been investigated under anodic solid oxide fuel cell conditions using density functional theory (DFT). In particular, constrained ab initio thermodynamic calculations have been performed to evaluate the phase stability of various Ga- and La-doped SrTiO3 at synthesized and anodic SOFC conditions. The density of states (DOS) of these materials was analyzed to determine the number of charge carriers and the degree of electronic conductivity. We find that a mixed ionic/electronic conductor can be obtained when doping SrTiO3 perovskite oxide with both p-type and n-type dopants. Calculations show that 10% Ga- and 20% La-doped SrTiO3 exhibit mixed ionic/electronic conductivity at high temperature and low oxygen partial pressure whereas doping with higher concentrations of Ga, e.g., 20%, diminishes the electronic conductivity of the material. Furthermore, changing the n-dopant from La (A-site) to Nb (B-site) does not significantly affect the reducibility and number of charge carriers in p- and n-doped SrTiO3. However, a higher degree of oxygen vacancy clustering is observed for the La-doped material which reduces the oxygen ion diffusion rate and traps electrons. Nevertheless, our findings suggest that independent of doping site, mixed ionic/ electronic conductivity can be obtained in SrTiO3 perovskite oxides under reducing conditions and high temperatures when using a mixed p- and n-type doping strategy that uses a p-dopant concentration smaller than the n-dopant concentration.

Suthirakun, Suwit; Ammal, Salai Cheettu; Xiao, Guoliang; Chen, Fanglin; Huang, Kevin; zur Loye, Hans-Conrad; Heyden, Andreas

2012-11-30T23:59:59.000Z

6

Thermodynamics of electromechanically coupled mixed ionic-electronic conductors: Deformation potential, Vegard strains, and flexoelectric effect  

Science Journals Connector (OSTI)

Strong coupling among external voltage, electrochemical potentials, concentrations of electronic and ionic species, and strains is a ubiquitous feature of solid state mixed ionic-electronic conductors (MIECs), the materials of choice in devices ranging from electroresistive and memristive elements to ion batteries and fuel cells. Here, we analyze in detail the electromechanical coupling mechanisms and derive generalized bias-concentration-strain equations for MIECs including contributions of concentration-driven chemical expansion, deformation potential, and flexoelectric effect. This analysis is extended toward the bias-induced strains in the uniform and scanning-probe-microscopy-like geometries. Notably, the contribution of the electron-phonon and flexoelectric coupling to the local surface displacement of the mixed ionic-electronic conductor caused by the electric field scanning probe microscope tip has not been considered previously. The developed thermodynamic approach allows evolving the theoretical description of mechanical phenomena induced by the electric fields (electromechanical response) in solid state ionics toward analytical theory and phase-field modeling of the MIECs in different geometries and under varying electrical, chemical, and mechanical boundary conditions.

A. N. Morozovska; E. A. Eliseev; A. K. Tagantsev; S. L. Bravina; Long-Qing Chen; S. V. Kalinin

2011-05-11T23:59:59.000Z

7

Microsoft Word - Poster Abstract_2010_GATech_Mixed Ionic-Electronic Conductors.docx  

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

Investigation of Oxygen Reduction Activity on Mixed Ionic-Electronic Conductors for Investigation of Oxygen Reduction Activity on Mixed Ionic-Electronic Conductors for SOFC Cathodes Matthew E. Lynch, Lei Yang, Meilin Liu Center for Innovative Fuel Cell and Battery Technologies School of Materials Science and Engineering Georgia Institute of Technology 771 Ferst Dr., Atlanta, GA 30332-0245 Telephone: 404-894-6114 Email: meilin.liu@mse.gatech.edu Porous cathodes are of primary importance to the electrochemical operation of a solid oxide fuel cell (SOFC). The compound La 1-x Sr x Co 1-y Fe y O 3-δ (LSCF) is a candidate material for the cathode, and shows good mixed ionic-electronic conductivity as well as good activity toward the oxygen reduction

8

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

E-Print Network (OSTI)

Incorporating a SrFeCo0.5Ox (SFC) membrane into a CO2 reforming reactor doubles methane conversion with a powder Pt/ZrO2 catalyst. The deactivation of both Pt/ZrO2 and a Pt/CeZrO2 catalyst is also retarded substantially. Catalyst performance...

Slade, David

2010-03-29T23:59:59.000Z

9

Magnetoelastic Interactions in Ionic ?-Electron Systems: Magnetogyration  

Science Journals Connector (OSTI)

The alkali hyperoxides A O2 exhibit elastic and magnetic interactions due to the nature of the diatomic molecule ion O2-. These anion sublattices represent simple magnetic spin-½ systems. In contrast to 3d- or 4f-electron systems, where magnetoelastic interactions induce magnetostriction, the (2p)?-electron system KO2 exhibits magnetogyration. A crystallographic phase transition involving a considerable change in the molecular orientation can be induced by an applied magnetic field. A theoretical model based on the exchange modulation produced by this reorientation describes the salient features.

M. A. Bösch; M. E. Lines; M. Labhart

1980-07-14T23:59:59.000Z

10

AP-XPS Measures MIEC Oxides in Action  

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

models of these materials for use in designing more efficient hydrogen gas production processes, like electrolysis, from renewable power sources, like water, allowing for...

11

Conductive Polymers  

SciTech Connect

Electroluminescent devices such as light-emitting diodes (LED) and high-energy density batteries. These new polymers offer cost savings, weight reduction, ease of processing, and inherent rugged design compared to conventional semiconductor materials. The photovoltaic industry has grown more than 30% during the past three years. Lightweight, flexible solar modules are being used by the U.S. Army and Marine Corps for field power units. LEDs historically used for indicator lights are now being investigated for general lighting to replace fluorescent and incandescent lights. These so-called solid-state lights are becoming more prevalent across the country since they produce efficient lighting with little heat generation. Conductive polymers are being sought for battery development as well. Considerable weight savings over conventional cathode materials used in secondary storage batteries make portable devices easier to carry and electric cars more efficient and nimble. Secondary battery sales represent an $8 billion industry annually. The purpose of the project was to synthesize and characterize conductive polymers. TRACE Photonics Inc. has researched critical issues which affect conductivity. Much of their work has focused on production of substituted poly(phenylenevinylene) compounds. These compounds exhibit greater solubility over the parent polyphenylenevinylene, making them easier to process. Alkoxy substituted groups evaluated during this study included: methoxy, propoxy, and heptyloxy. Synthesis routes for production of alkoxy-substituted poly phenylenevinylene were developed. Considerable emphasis was placed on final product yield and purity.

Bohnert, G.W.

2002-11-22T23:59:59.000Z

12

Student Affairs STUDENT CONDUCT  

E-Print Network (OSTI)

Student Affairs CODE OF STUDENT CONDUCT 2014-15 #12;Contents Letter from the Dean of Students ....................................................................ii Binghamton University's Code of Student Conduct Preamble...................... 1 Section I: Rules of Student Conduct.............................................................. 1 Section II: Definitions

Suzuki, Masatsugu

13

Mechanical, Electrical, and Optical Properties of (Pr,Ce)O[subscript 2] Solid Solutions: Kinetic Studies  

E-Print Network (OSTI)

Praseodymium doped cerium oxide (PCO) shows mixed ionic and electronic conducting (MIEC) characteristics at relatively high pO2 (e.g. air) and enhanced oxygen storage capacity (OSC), of interest for solid oxide fuel cell ...

Chen, Di

14

Code of Conduct  

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

Governance » Governance » Ethics, Accountability » Code of Conduct Code of Conduct Helping employees recognize and resolve the ethics and compliance issues that may arise in their daily work. Contact Code of Conduct (505) 667-7506 Code of Conduct LANL is committed to operating in accordance with the highest standards of ethics and compliance and with its core values of service to our nation, ethical conduct and personal accountability, excellence in our work, and mutual respect and teamwork. LANL must demonstrate to customers and the public that the Laboratory is accountable for its actions and that it conducts business in a trustworthy manner. What is LANL's Code of Conduct? Charlie McMillan 1:46 Laboratory Director Charlie McMillan introduces the code LANL's Code of Conduct is designed to help employees recognize and

15

JLF Conduct of Operations  

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

Jupiter Laser Facility (JLF) Conduct Of Operations The Conduct of Operations is a set of procedures and guidelines that are put in place to ensure operational safety and security...

16

Electrically conductive composite material  

DOE Patents (OSTI)

An electrically conductive composite material is disclosed which comprises a conductive open-celled, low density, microcellular carbon foam filled with a non-conductive polymer or resin. The composite material is prepared in a two-step process consisting of first preparing the microcellular carbon foam from a carbonizable polymer or copolymer using a phase separation process, then filling the carbon foam with the desired non-conductive polymer or resin. The electrically conductive composites of the present invention has a uniform and consistent pattern of filler distribution, and as a result is superior over prior art materials when used in battery components, electrodes, and the like. 2 figs.

Clough, R.L.; Sylwester, A.P.

1989-05-23T23:59:59.000Z

17

CONDUCT OF OPERATIONS (CO)  

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

CONDUCT OF OPERATIONS (CO) CONDUCT OF OPERATIONS (CO) OBJECTIVE TA-55 SST Facility NNSA ORR Implementation Plan 1 1 CO.1 The formality and discipline of operations is adequate to conduct work safely and programs are inplace to maintain this formality and discipline. (Core Requirement 13) Criteria 1. Programmatic elements of conduct of operations are in place for TA-55 SST operations. 2. The TA-55 SST operations personnel adequately demonstrate the principles of conduct ofoperations requirements during the shift performance period. Approach Record Reviews: Review procedures and other facility documents to verify compliance with conduct of operations principles. Interviews: Interview a sampling of the TA-55 SST associated personnel to validate their understanding of the conduct of operations principles (e.g., procedure usage,

18

High conductance surge cable  

DOE Patents (OSTI)

An electrical cable for connecting transient voltage surge suppressors to electrical power panels. A strip of electrically conductive foil defines a longitudinal axis, with a length of an electrical conductor electrically attached to the metallic foil along the longitudinal axis. The strip of electrically conductive foil and the length of an electrical conductor are covered by an insulating material. For impedance matching purposes, triangular sections can be removed from the ends of the electrically conductive foil at the time of installation. 6 figs.

Murray, M.M.; Wilfong, D.H.; Lomax, R.E.

1998-12-08T23:59:59.000Z

19

High conductance surge cable  

DOE Patents (OSTI)

An electrical cable for connecting transient voltage surge suppressers to ectrical power panels. A strip of electrically conductive foil defines a longitudinal axis, with a length of an electrical conductor electrically attached to the metallic foil along the longitudinal axis. The strip of electrically conductive foil and the length of an electrical conductor are covered by an insulating material. For impedance matching purposes, triangular sections can be removed from the ends of the electrically conductive foil at the time of installation.

Murray, Matthew M. (Espanola, NM); Wilfong, Dennis H. (Brooksville, FL); Lomax, Ralph E. (Santa Fe, NM)

1998-01-01T23:59:59.000Z

20

Research Conduct Policies  

Office of Science (SC) Website

Research Conduct Policies Basic Energy Sciences (BES) BES Home About Research Materials Sciences & Engineering (MSE) Chemical Sciences, Geosciences, and Biosciences (CSGB)...

Note: This page contains sample records for the topic "ionic-electronic conductivity miec" 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

STABLE HIGH CONDUCTIVITY BILAYERED ELECTROLYTES FOR LOW TEMPERATURE SOLID OXIDE FUEL CELLS  

SciTech Connect

A bilayer electrolyte consisting of acceptor-doped ceria (on the fuel/reducing side) and cubic-stabilized bismuth oxide (on the oxidizing side) was developed. The bilayer electrolyte that was developed showed significant improvement in open-circuit potential versus a typical ceria based SOFC. Moreover, the OCP of the bilayer cells increased as the thickness of the bismuth oxide layer increased relative to the ceria layer. Thereby, verifying the bilayer concept. Although, because of the absence of a suitable cathode (a problem we are still working assiduously to solve), we were unable to obtain power density curves, our modeling work predicts a reduction in electrolyte area specific resistance of two orders of magnitude over cubic-stabilized zirconia and projects a maximum power density of 9 W/m{sup 2} at 800 C and 0.09 W/m{sup 2} at 500 C. Towards the development of the bilayer electrolyte other significant strides were made. Among these were, first, the development of a, bismuth oxide based, oxide ion conductor with the highest conductivity (0.56 S/cm at 800 C and 0.043 S/cm at 500 C) known to date. Second, a physical model of the defect transport mechanisms and the driving forces for the ordering phenomena in bismuth oxide and other fluorite systems was developed. Third, a model for point defect transport in oxide mixed ionic-electronic conductors was developed, without the typical assumption of a uniform distribution of ions and including the effect of variable loads on the transport properties of an SOFC (with either a single or bilayer electrolyte).

Eric D. Wachsman; Keith L. Duncan

2002-09-30T23:59:59.000Z

22

Electrically conductive material  

DOE Patents (OSTI)

An electrically conductive material for use in solid oxide fuel cells, electrochemical sensors for combustion exhaust, and various other applications possesses increased fracture toughness over available materials, while affording the same electrical conductivity. One embodiment of the sintered electrically conductive material consists essentially of cubic ZrO.sub.2 as a matrix and 6-19 wt. % monoclinic ZrO.sub.2 formed from particles having an average size equal to or greater than about 0.23 microns. Another embodiment of the electrically conductive material consists essentially at cubic ZrO.sub.2 as a matrix and 10-30 wt. % partially stabilized zirconia (PSZ) formed from particles having an average size of approximately 3 microns.

Singh, Jitendra P. (Bollingbrook, IL); Bosak, Andrea L. (Burnam, IL); McPheeters, Charles C. (Woodridge, IL); Dees, Dennis W. (Woodridge, IL)

1993-01-01T23:59:59.000Z

23

Electrically conductive material  

DOE Patents (OSTI)

An electrically conductive material is described for use in solid oxide fuel cells, electrochemical sensors for combustion exhaust, and various other applications possesses increased fracture toughness over available materials, while affording the same electrical conductivity. One embodiment of the sintered electrically conductive material consists essentially of cubic ZrO[sub 2] as a matrix and 6-19 wt. % monoclinic ZrO[sub 2] formed from particles having an average size equal to or greater than about 0.23 microns. Another embodiment of the electrically conductive material consists essentially at cubic ZrO[sub 2] as a matrix and 10-30 wt. % partially stabilized zirconia (PSZ) formed from particles having an average size of approximately 3 microns. 8 figures.

Singh, J.P.; Bosak, A.L.; McPheeters, C.C.; Dees, D.W.

1993-09-07T23:59:59.000Z

24

Solid oxide fuel cells having porous cathodes infiltrated with oxygen-reducing catalysts  

DOE Patents (OSTI)

Solid-oxide fuel cells include an electrolyte and an anode electrically coupled to a first surface of the electrolyte. A cathode is provided, which is electrically coupled to a second surface of the electrolyte. The cathode includes a porous backbone having a porosity in a range from about 20% to about 70%. The porous backbone contains a mixed ionic-electronic conductor (MIEC) of a first material infiltrated with an oxygen-reducing catalyst of a second material different from the first material.

Liu, Meilin; Liu, Ze; Liu, Mingfei; Nie, Lifang; Mebane, David Spencer; Wilson, Lane Curtis; Surdoval, Wayne

2014-08-12T23:59:59.000Z

25

CONDUCTING A RECORDS INVENTORY  

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

PROCEDURE FOR CONDUCTING A RECORDS INVENTORY PROCEDURE FOR CONDUCTING A RECORDS INVENTORY Revision 1 10/31/07 Approved by: DOE Records Management Division, IM-23 PROCEDURE FOR CONDUCTING A RECORDS INVENTORY 1. GENERAL. A records inventory is compiling a descriptive list of each record series or system, including the location of the records and any other pertinent data. A records inventory is not a list of each document or each folder. 2. DEFINE THE RECORDS INVENTORY GOAL(S). The goals of a records inventory should be to: a. Gather information for scheduling purposes; b. Prepare for conversion to other media or to identify the volume of classified and/or permanent records in your organization's custody; and c. Identify any existing shortcomings, deficiencies, or problems with

26

Lithium ion conducting electrolytes  

DOE Patents (OSTI)

A liquid, predominantly lithium-conducting, ionic electrolyte is described having exceptionally high conductivity at temperatures of 100 C or lower, including room temperature, and comprising the lithium salts selected from the group consisting of the thiocyanate, iodide, bromide, chloride, perchlorate, acetate, tetrafluoroborate, perfluoromethane sulfonate, perfluoromethane sulfonamide, tetrahaloaluminate, and heptahaloaluminate salts of lithium, with or without a magnesium-salt selected from the group consisting of the perchlorate and acetate salts of magnesium. Certain of the latter embodiments may also contain molecular additives from the group of acetonitrile (CH{sub 3}CN), succinnonitrile (CH{sub 2}CN){sub 2}, and tetraglyme (CH{sub 3}--O--CH{sub 2}--CH{sub 2}--O--){sub 2} (or like solvents) solvated to a Mg{sup +2} cation to lower the freezing point of the electrolyte below room temperature. Other particularly useful embodiments contain up to about 40, but preferably not more than about 25, mol percent of a long chain polyether polymer dissolved in the lithium salts to provide an elastic or rubbery solid electrolyte of high ambient temperature conductivity and exceptional 100 C conductivity. Another embodiment contains up to about but not more than 10 mol percent of a molecular solvent such as acetone. 2 figs.

Angell, C.A.; Liu, C.

1996-04-09T23:59:59.000Z

27

Conduct of Operations  

Directives, Delegations, and Requirements

This Order defines the requirements for establishing and implementing Conduct of Operations Programs at Department of Energy (DOE), including National Nuclear Security Administration (NNSA), facilities and projects. Cancels DOE O 5480.19. Admin Chg 2, dated 12-3-14, cancels Admin Chg 1.

2010-06-29T23:59:59.000Z

28

TRANSPORT INVOLVING CONDUCTING FIBERS IN A NON-CONDUCTING MATRIX  

E-Print Network (OSTI)

result is a material with high electrical conductivity and low thermal conductivity. Transport Models,2 , J. Rozen3 Introduction Thermal and electrical transport through a low-conductivity matrix containing conversion devices high electrical conductivity and low thermal conductivity are preferred for superior

Walker, D. Greg

29

Low Temperature Proton Conductivity  

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

and and MEAs at Freezing Temperatures Thomas A. Zawodzinski, Jr. Case Western Reserve University Cleveland, Ohio 2 Freezing Fuel Cells: Impact on MEAS Below 0 o C *Transport processes/motions slow down: questions re: lower conductivity,water mobility etc *Residual water will have various physical effects in different portions of the MEA questions re: durability of components 3 3 'States' of Water in Proton Conductors ? Freezing (bulk), bound freezable, bound non freezable water states claimed based on DSC * Freezing water more mobile, allegedly important for high conductivity Analysis common for porous systems Does the presence of these states matter? Why? 4 'State of Water' in PEMs At T < 0 o C *'Liquid-like' water freezes *'Non-freezing' fraction: water of solvation at pore

30

Oxygen ion conducting materials  

DOE Patents (OSTI)

An oxygen ion conducting ceramic oxide that has applications in industry including fuel cells, oxygen pumps, oxygen sensors, and separation membranes. The material is based on the idea that substituting a dopant into the host perovskite lattice of (La,Sr)MnO.sub.3 that prefers a coordination number lower than 6 will induce oxygen ion vacancies to form in the lattice. Because the oxygen ion conductivity of (La,Sr)MnO.sub.3 is low over a very large temperature range, the material exhibits a high overpotential when used. The inclusion of oxygen vacancies into the lattice by doping the material has been found to maintain the desirable properties of (La,Sr)MnO.sub.3, while significantly decreasing the experimentally observed overpotential.

Vaughey, John (Elmhurst, IL); Krumpelt, Michael (Naperville, IL); Wang, Xiaoping (Downers Grove, IL); Carter, J. David (Bolingbrook, IL)

2003-01-01T23:59:59.000Z

31

Super ionic conductive glass  

DOE Patents (OSTI)

An ionically conducting glass for use as a solid electrolyte in a power or secondary cell containing an alkali metal-containing anode and a cathode separated by an alkali metal ion conducting glass having an ionic transference number of unity and the general formula: A.sub.1+x D.sub.2-x/3 Si.sub.x P.sub.3-x O.sub.12-2x/3, wherein A is a network modifier for the glass and is an alkali metal of the anode, D is an intermediate for the glass and is selected from the class consisting of Zr, Ti, Ge, Al, Sb, Be, and Zn and X is in the range of from 2.25 to 3.0. Of the alkali metals, Na and Li are preferred and of the intermediate, Zr, Ti and Ge are preferred.

Susman, Sherman (Park Forest, IL); Volin, Kenneth J. (Fort Collins, CO)

1984-01-01T23:59:59.000Z

32

Conduction cooled tube supports  

DOE Patents (OSTI)

In boilers, process tubes are suspended by means of support studs that are in thermal contact with and attached to the metal roof casing of the boiler and the upper bend portions of the process tubes. The support studs are sufficiently short that when the boiler is in use, the support studs are cooled by conduction of heat to the process tubes and the roof casing thereby maintaining the temperature of the stud so that it does not exceed 1400.degree. F.

Worley, Arthur C. (Mt. Tabor, NJ); Becht, IV, Charles (Morristown, NJ)

1984-01-01T23:59:59.000Z

33

Chiral Conductivities of Nanotubes  

Science Journals Connector (OSTI)

Chiral conductivities of nanotubes are examined within the framework of the Boltzmann transport equation. Electron transport along a chiral trajectory is decomposed into current components along the tubule axis and its circumference. Within a constant relaxation time approximation, these components are derived from the expectation values of Fermi velocities by using the appropriate operators and the wave functions at the Fermi level obtained by first-principles calculations. As a typical example, the chiral current of a doped BC2N tubule is illustrated, and the strength of the induced magnetic field is discussed.

Yoshiyuki Miyamoto; Steven G. Louie; Marvin L. Cohen

1996-03-18T23:59:59.000Z

34

Enhanced Thermal Conductivity Oxide Fuels  

SciTech Connect

the purpose of this project was to investigate the feasibility of increasing the thermal conductivity of oxide fuels by adding small fractions of a high conductivity solid phase.

Alvin Solomon; Shripad Revankar; J. Kevin McCoy

2006-01-17T23:59:59.000Z

35

A Simple Audio Conductivity Device  

Science Journals Connector (OSTI)

A Simple Audio Conductivity Device ... To solve these problems, the authors have built a simple audio conductivity device that is very sensitive to current flow. ...

Gregory Berenato; David F. Maynard

1997-04-01T23:59:59.000Z

36

Lateral conduction infrared photodetector  

DOE Patents (OSTI)

A photodetector for detecting infrared light in a wavelength range of 3-25 .mu.m is disclosed. The photodetector has a mesa structure formed from semiconductor layers which include a type-II superlattice formed of alternating layers of InAs and In.sub.xGa.sub.1-xSb with 0.ltoreq.x.ltoreq.0.5. Impurity doped regions are formed on sidewalls of the mesa structure to provide for a lateral conduction of photo-generated carriers which can provide an increased carrier mobility and a reduced surface recombination. An optional bias electrode can be used in the photodetector to control and vary a cut-off wavelength or a depletion width therein. The photodetector can be formed as a single-color or multi-color device, and can also be used to form a focal plane array which is compatible with conventional read-out integrated circuits.

Kim, Jin K. (Albuquerque, NM); Carroll, Malcolm S. (Albuquerque, NM)

2011-09-20T23:59:59.000Z

37

Low Conductivity Thermal Barrier Coatings  

E-Print Network (OSTI)

Low Conductivity Thermal Barrier Coatings A Dissertation Presented to The Faculty of the School conductivity of the coatings. The minimum thermal conductivity occurs at a low rotation rate and is 0.8 W intrinsic thermal conductivity, good phase stability and greater resistance to sintering and CMAS attack

Wadley, Haydn

38

Conductive lithium storage electrode  

DOE Patents (OSTI)

A compound comprising a composition A.sub.x(M'.sub.1-aM''.sub.a).sub.y(XD.sub.4).sub.z, A.sub.x(M'.sub.1-aM''.sub.a).sub.y(DXD.sub.4).sub.z, or A.sub.x(M'.sub.1-aM''.sub.a).sub.y(X.sub.2D.sub.7).sub.z, and have values such that x, plus y(1-a) times a formal valence or valences of M', plus ya times a formal valence or valence of M'', is equal to z times a formal valence of the XD.sub.4, X.sub.2D.sub.7, or DXD.sub.4 group; or a compound comprising a composition (A.sub.1-aM''.sub.a).sub.xM'.sub.y(XD.sub.4).sub.z, (A.sub.1-aM''.sub.a).sub.xM'.sub.y(DXD.sub.4).sub.z (A.sub.1-aM''.sub.a).sub.xM'.sub.y(X.sub.2D.sub.7).sub.z and have values such that (1-a).sub.x plus the quantity ax times the formal valence or valences of M'' plus y times the formal valence or valences of M' is equal to z times the formal valence of the XD.sub.4, X.sub.2D.sub.7 or DXD.sub.4 group. In the compound, A is at least one of an alkali metal and hydrogen, M' is a first-row transition metal, X is at least one of phosphorus, sulfur, arsenic, molybdenum, and tungsten, M'' any of a Group IIA, IIIA, IVA, VA, VIA, VIIA, VIIIA, IB, IIB, IIIB, IVB, VB, and VIB metal, D is at least one of oxygen, nitrogen, carbon, or a halogen, 0.0001conductivity at 27.degree. C. of at least about 10.sup.-8 S/cm. The compound can be a doped lithium phosphate that can intercalate lithium or hydrogen. The compound can be used in an electrochemical device including electrodes and storage batteries and can have a gravimetric capacity of at least about 80 mAh/g while being charged/discharged at greater than about C rate of the compound.

Chiang, Yet-Ming (Framingham, MA); Chung, Sung-Yoon (Incheon, KR); Bloking, Jason T. (Mountain View, CA); Andersson, Anna M. (Vasteras, SE)

2012-04-03T23:59:59.000Z

39

Conductive lithium storage electrode  

DOE Patents (OSTI)

A compound comprising a composition A.sub.x(M'.sub.1-aM''.sub.a).sub.y(XD.sub.4).sub.z, A.sub.x(M'.sub.1-aM''.sub.a).sub.y(DXD.sub.4).sub.z, or A.sub.x(M'.sub.1-aM''.sub.a).sub.y(X.sub.2D.sub.7).sub.z, and have values such that x, plus y(1-a) times a formal valence or valences of M', plus ya times a formal valence or valence of M'', is equal to z times a formal valence of the XD.sub.4, X.sub.2D.sub.7, or DXD.sub.4 group; or a compound comprising a composition (A.sub.1-aM''.sub.a).sub.xM'.sub.y(XD.sub.4).sub.z, (A.sub.1-aM''.sub.a).sub.xM'.sub.y(DXD.sub.4).sub.z(A.sub.1-aM''.sub.a).s- ub.xM'.sub.y(X.sub.2D.sub.7).sub.z and have values such that (1-a).sub.x plus the quantity ax times the formal valence or valences of M'' plus y times the formal valence or valences of M' is equal to z times the formal valence of the XD.sub.4, X.sub.2D.sub.7 or DXD.sub.4 group. In the compound, A is at least one of an alkali metal and hydrogen, M' is a first-row transition metal, X is at least one of phosphorus, sulfur, arsenic, molybdenum, and tungsten, M'' any of a Group IIA, IIIA, IVA, VA, VIA, VIIA, VIIIA, IB, IIB, IIIB, IVB, VB, and VIB metal, D is at least one of oxygen, nitrogen, carbon, or a halogen, 0.0001conductivity at 27.degree. C. of at least about 10.sup.-8 S/cm. The compound can be a doped lithium phosphate that can intercalate lithium or hydrogen. The compound can be used in an electrochemical device including electrodes and storage batteries and can have a gravimetric capacity of at least about 80 mAh/g while being charged/discharged at greater than about C rate of the compound.

Chiang, Yet-Ming (Framingham, MA); Chung, Sung-Yoon (Seoul, KR); Bloking, Jason T. (Cambridge, MA); Andersson, Anna M. (Uppsala, SE)

2008-03-18T23:59:59.000Z

40

Optical Conductivity with Holographic Lattices  

E-Print Network (OSTI)

We add a gravitational background lattice to the simplest holographic model of matter at finite density and calculate the optical conductivity. With the lattice, the zero frequency delta function found in previous calculations (resulting from translation invariance) is broadened and the DC conductivity is finite. The optical conductivity exhibits a Drude peak with a cross-over to power-law behavior at higher frequencies. Surprisingly, these results bear a strong resemblance to the properties of some of the cuprates.

Gary T. Horowitz; Jorge E. Santos; David Tong

2012-08-03T23:59:59.000Z

Note: This page contains sample records for the topic "ionic-electronic conductivity miec" 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

Conductivity of a Warm Plasma  

Science Journals Connector (OSTI)

A theory for obtaining the conductivity of a uniform plasma as a function of frequency and temperature is presented and compared with a number of recent treatments.

Lyman Mower

1959-10-01T23:59:59.000Z

42

Appendix C Conducting Structured Walkthroughs  

Directives, Delegations, and Requirements

This guide describes how to conduct a structured walkthroughs during the lifecycle stages of software engineering projects, regardless of hardware platform.

1997-05-21T23:59:59.000Z

43

BPA Hotline & Codes of Conduct  

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

Hotline & Codes of Conduct Pages default Sign In About | Careers | Contact | Investors | bpa.gov Search News & Us Expand News & Us Projects & Initiatives Expand Projects &...

44

Optical Modulation of Molecular Conductance  

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

Optical Modulation of Molecular Conductance Authors: Battacharyya, S., Kibel, A., Kodis, G., Liddell, P. A., Gervaldo, M., Gust, D., and Lindsay, S. Title: Optical Modulation of...

45

Test Procedure Conducted Energy Weapons  

E-Print Network (OSTI)

Test Procedure for Conducted Energy Weapons Version 1.1 2010/07/31 #12;Contents Page 0.0 Disclaimer A TASER M26 13 Appendix B TASER X26 23 #12;1 Test Procedure for Conducted Energy Weapons 0.0 Disclaimer Energy Weapons ("CEWs") in a controlled and repeatable manner across jurisdictions. The consistent

Adler, Andy

46

Experimental thermal conductivity and contact conductance of graphite composites  

E-Print Network (OSTI)

Graphite fiber organic matrix composites were reviewed ics. for potential heat sink applications in the electronics packaging determined the effective transverse and longitudinal thermal industry. This experimental investigation conductivity...

Jackson, Marian Christine

2012-06-07T23:59:59.000Z

47

Dynamic Conductance of Carbon Nanotubes  

Science Journals Connector (OSTI)

The dynamic conductance of carbon nanotubes was investigated using the nonequilibrium Green's function formalism within the context of a tight-binding model. Specifically, we have studied the ac response of tubes of different helicities, both with and without defects, and an electronic heterojunction. Because of the induced displacement currents, the dynamic conductance of the nanotubes differs significantly from the dc conductance displaying both capacitive and inductive responses. The important role of photon-assisted transport through nanotubes is revealed and its implications for experiments discussed.

Christopher Roland; Marco Buongiorno Nardelli; Jian Wang; Hong Guo

2000-03-27T23:59:59.000Z

48

Method of Synthesis of Proton Conducting Materials  

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

Method of Synthesis of Proton Conducting Materials Method of Synthesis of Proton Conducting Materials A method of producing a proton conducting material. Available for thumbnail of...

49

Frequency dependent dynamical electromechanical response of mixed ionic-electronic conductors  

E-Print Network (OSTI)

) Structure and ion transport in Li3Fe2(PO4)3 synthesized by solution combustion technique J. Appl. Phys. 111, Department of Mechanical Engineering, Department of Chemical and Biomolecular Engineering, Clear Water Bay hysteresis-like loops with pronounced memory window, and butterfly-like curves are calculated

Chen, Long-Qing

50

PHYSICAL REVIEW B 83, 195313 (2011) Thermodynamics of electromechanically coupled mixed ionic-electronic conductors  

E-Print Network (OSTI)

electroresistive and memristive elements to ion batteries and fuel cells. Here, we analyze in detail ubiquitous in solid-state electrochemical devices including batteries,1,2 fuel cells3,4 and electroresistive instability of solid oxide fuel cells and Li-ion battery anodes such as intraparticle cracking

Chen, Long-Qing

51

Quantized ionic conductance in nanopores  

SciTech Connect

Ionic transport in nanopores is a fundamentally and technologically important problem in view of its ubiquitous occurrence in biological processes and its impact on DNA sequencing applications. Using microscopic calculations, we show that ion transport may exhibit strong non-liDearities as a function of the pore radius reminiscent of the conductance quantization steps as a function of the transverse cross section of quantum point contacts. In the present case, however, conductance steps originate from the break up of the hydration layers that form around ions in aqueous solution. Once in the pore, the water molecules form wavelike structures due to multiple scattering at the surface of the pore walls and interference with the radial waves around the ion. We discuss these effects as well as the conditions under which the step-like features in the ionic conductance should be experimentally observable.

Zwolak, Michael [Los Alamos National Laboratory; Lagerqvist, Johan [UCSD; Di Ventra, Massimilliano [UCSD

2009-01-01T23:59:59.000Z

52

Optical conductivity of curved graphene  

E-Print Network (OSTI)

We compute the optical conductivity for an out-of-plane deformation in graphene using an approach based on solutions of the Dirac equation in curved space. Different examples of periodic deformations along one direction translates into an enhancement of the optical conductivity peaks in the region of the far and mid infrared frequencies for periodicities $\\sim100\\,$nm. The width and position of the peaks can be changed by dialling the parameters of the deformation profiles. The enhancement of the optical conductivity is due to intraband transitions and the translational invariance breaking in the geometrically deformed background. Furthemore, we derive an analytical solution of the Dirac equation in a curved space for a general deformation along one spatial direction. For this class of geometries, it is shown that curvature induces an extra phase in the electron wave function, which can also be explored to produce interference devices of the Aharonov-Bohm type.

A. J. Chaves; T. Frederico; O. Oliveira; W. de Paula; M. C. Santos

2014-05-01T23:59:59.000Z

53

Electrically Conductive Bacterial Nanowires Produced by Shewanella...  

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

Conductive Bacterial Nanowires Produced by Shewanella Oneidensis Strain MR-1 and Other Microorganisms . Electrically Conductive Bacterial Nanowires Produced by Shewanella...

54

Conducting Your Own Energy Audit  

E-Print Network (OSTI)

Why should you or anyone be interested in conducting a time intensive energy audit. What equipment is needed? When should you get started? Who should do it? The answer to Why is that energy costs are cutting into a company’s profit every minute...

Phillips, J.

2008-01-01T23:59:59.000Z

55

Conducting Polymer Devices for Bioelectronics  

E-Print Network (OSTI)

signals recording. Organic electrochemical transistors (OECTs) represent a step beyond conducting polymer a far superior signal-to-noise- ratio (SNR) compared to electrodes. The high SNR of the OECT recordings and contamination. The use of an organic electrochemical transistor for detection of lactate by integration

Paris-Sud XI, Université de

56

ETHICAL CONDUCT IN BIOMEDICAL RESEARCH  

E-Print Network (OSTI)

ETHICAL CONDUCT IN BIOMEDICAL RESEARCH: A Handbook for Biomedical Graduate Studies Students and Research Fellows Third Edition BIOMEDICAL GRADUATE STUDIES PROGRAM UNIVERSITY of PENNSYLVANIA #12 that a trainee in biomedical research should be taught to maintain the highest standards of scientific integrity

Plotkin, Joshua B.

57

Conduct of operations implementation plan  

SciTech Connect

This implementation plan describes the process and provides information and schedules that are necessary to implement and comply with the Department of Energy (DOE) Order 5480.19, {open_quotes}Conduct of Operations{close_quotes} (CoOp). This plan applies to all Pinellas Plant operations and personnel. Generally, this Plan discusses how DOE Order 5480.19 will be implemented at the Pinellas Plant.

Anderson, C.K.; Hall, R.L.

1991-02-20T23:59:59.000Z

58

Electrically conductive polymer concrete coatings  

DOE Patents (OSTI)

A sprayable electrically conductive polymer concrete coating for vertical and overhead applications is described. The coating is permeable yet has low electrical resistivity (<10 ohm-cm), good bond strength to concrete substrates, and good weatherability. A preferred formulation contains about 60 wt% calcined coke breeze, 40 wt% vinyl ester resin with 3.5 wt% modified bentonite clay. Such formulations apply evenly and provide enough rigidity for vertical or overhead structures so there is no drip or sag. 4 tabs.

Fontana, J.J.; Elling, D.; Reams, W.

1988-05-26T23:59:59.000Z

59

Electrically conductive polymer concrete coatings  

DOE Patents (OSTI)

A sprayable electrically conductive polymer concrete coating for vertical d overhead applications is described. The coating is permeable yet has low electrical resistivity (<10 ohm-cm), good bond strength to concrete substrates, and good weatherability. A preferred formulation contains about 60 wt % calcined coke breeze, 40 wt % vinyl ester with 3.5 wt % modified bentonite clay. Such formulations apply evenly and provide enough rigidity for vertical or overhead structures so there is no drip or sag.

Fontana, Jack J. (Shirley, NY); Elling, David (Centereach, NY); Reams, Walter (Shirley, NY)

1990-01-01T23:59:59.000Z

60

Thermal Conductivity of Polycrystalline Semiconductors and Ceramics  

E-Print Network (OSTI)

semiconductors and ceramics with desired thermalthermal conductivity of several polycrystalline semiconductors and ceramics,Thermal Conductivity of Polycrystalline Semiconductors and Ceramics

Wang, Zhaojie

2012-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "ionic-electronic conductivity miec" 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

Continuous Processing of High Thermal Conductivity Polyethylene...  

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

Processing of High Thermal Conductivity Polyethylene Fibers and Sheets Continuous Processing of High Thermal Conductivity Polyethylene Fibers and Sheets Massachusetts Institute of...

62

Planning and Conducting Readiness Reviews  

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

3006-2010 3006-2010 ________________________ Superseding DOE-STD-3006-2000 June 2000 DOE STANDARD PLANNING AND CONDUCTING READINESS REVIEWS U.S. Department of Energy AREA OPER Washington, D.C. 20585 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. TS This document has been reproduced directly from the best available copy. Available to DOE and DOE contractors from ES&H Technical Information Services, U.S. Department of Energy, (800) 473-4375, fax: (301) 903-9823. Available to the public from the U.S. Department of Commerce, Technology Administration, National Technical Information Service, Springfield, VA 22161; (703) 605-6000. DOE-STD-3006-YR i CONTENTS FOREWORD................................................................................................................................. 1

63

Hydraulic conductivity of shaly sands  

SciTech Connect

The effects of clays on the hydraulic conductivity of a sandstone are analyzed by considering a simple clay coating structure for the sand grains. In the model, silicate insulating nuclei are uniformly surrounded by charged clay particles. The total charge on the clays is compensated by a counterion density Q{sub v}. Assuming a capillary flow regime inside this granular model a Kozeny-Carman type equation has been derived, expressing its intrinsic permeability k in terms of a porosity-tortuosity factor {phi}{sup (m{minus}0.5)} and of the parameter Q{sub v}. The power-law derived expression shows that k decreases with the amount of clay, not only because a high Q{sub v} implies a narrowing of the pore channels, but also because it modifies the hydraulic tortuosity of the medium. This new equation has been statistically tested with extensive petrophysical laboratory data for different types of shaly sandstones.

Lima, O.A.L. de [PPPG/Federal Univ. of Bahia, Salvador Bahia (Brazil)

1994-12-31T23:59:59.000Z

64

STUDENT CONDUCT CODE REVIEW/DISCUSSION  

E-Print Network (OSTI)

STUDENT CONDUCT CODE REVISION REVIEW/DISCUSSION Student Conduct Code Revision Workgroup #12;Agenda Introductions/Purpose History of the Student Conduct Code Revision Workgroup Highlights of the Draft Revision Introduction: Principles Promoting Student Responsibility Jurisdiction Conduct in Violation of Community

Fainman, Yeshaiahu

65

Reduced Thermal Conductivity of Compacted Silicon Nanowires  

E-Print Network (OSTI)

Thermal-Barrier-Coating Applications,” Journa of American Ceramicthermal conductivity materials are typically found among ceramicsThermal Conductivity of Porous Materials: Application to Thick Barrier Coatings,” Journal of the European Ceramic

Yuen, Taylor S.

66

Fabrication of glass microspheres with conducting surfaces  

DOE Patents (OSTI)

A method for making hollow glass microspheres with conducting surfaces by adding a conducting vapor to a region of the glass fabrication furnace. As droplets or particles of glass forming material pass through multiple zones of different temperature in a glass fabrication furnace, and are transformed into hollow glass microspheres, the microspheres pass through a region of conducting vapor, forming a conducting coating on the surface of the microspheres.

Elsholz, William E. (Acampo, CA)

1984-01-01T23:59:59.000Z

67

MODEL STANDARDS OF CONDUCT FOR MEDIATORS  

E-Print Network (OSTI)

MODEL STANDARDS OF CONDUCT FOR MEDIATORS AMERICAN ARBITRATION ASSOCIATION (ADOPTED SEPTEMBER 8 AUGUST 22, 2005) SEPTEMBER 2005 #12;1 The Model Standards of Conduct for Mediators 2005 The Model Standards of Conduct for Mediators was prepared in 1994 by the American Arbitration Association

68

Organic conductive films for semiconductor electrodes  

DOE Patents (OSTI)

According to the present invention, improved electrodes overcoated with conductive polymer films and preselected catalysts are provided. The electrodes typically comprise an inorganic semiconductor over-coated with a charge conductive polymer film comprising a charge conductive polymer in or on which is a catalyst or charge-relaying agent.

Frank, A.J.

1984-01-01T23:59:59.000Z

69

The workshop on conductive polymers: Final report  

SciTech Connect

Reports are made by groups on: polyacetylene, polyphenylene, polyaniline, and related systems; molecular, crystallographic, and defect structures in conducting polymers; heterocyclic polymers; synthesis of new and improved conducting polymers; future applications possibilities for conducting polymers; and challenges for improved understanding of properties. (DLC)

Not Available

1985-01-01T23:59:59.000Z

70

Method of Synthesis of Proton Conducting Materials  

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

Method of Synthesis of Proton Conducting Materials Method of Synthesis of Proton Conducting Materials Method of Synthesis of Proton Conducting Materials A method of producing a proton conducting material. Available for thumbnail of Feynman Center (505) 665-9090 Email Method of Synthesis of Proton Conducting Materials A method of producing a proton conducting material, comprising adding a pyrophosphate salt to a solvent to produce a dissolved pyrophosphate salt; adding an inorganic acid salt to a solvent to produce a dissolved inorganic acid salt; adding the dissolved inorganic acid salt to the dissolved pyrophosphate salt to produce a mixture; substantially evaporating the solvent from the mixture to produce a precipitate; and calcining the precipitate at a temperature of from about 400.degree. C. to about

71

Definition: Hydraulic Conductivity | Open Energy Information  

Open Energy Info (EERE)

Conductivity Conductivity Jump to: navigation, search Dictionary.png Hydraulic Conductivity Hydraulic conductivity is a physical property which measures the ability of the material to transmit fluid through pore spaces and fractures in the presence of an applied hydraulic gradient. Darcy's Law defines the hydraulic conductivity as the ratio of the average velocity of a fluid through a cross-sectional area (Darcy's velocity) to the applied hydraulic gradient.[1] View on Wikipedia Wikipedia Definition Hydraulic conductivity, symbolically represented as, is a property of vascular plants, soil or rock, that describes the ease with which a fluid (usually water) can move through pore spaces or fractures. It depends on the intrinsic permeability of the material and on the degree of

72

Transport involving conducting fibers in a non-conducting matrix R. A. Hansela  

E-Print Network (OSTI)

result is a material with high electrical conduc- tivity and low thermal conductivity. If we consider, conducting fibers, thin-film devices 1. Introduction Thermal and electrical transport through a low to predict conductance of the combined system. However, if the two materials are similar in conductivity

Walker, D. Greg

73

Conducted Electrical Weapon Deployed Probe Wounds  

Science Journals Connector (OSTI)

Deployment of probes is a common method of use for some handheld conducted electrical weapons (CEWs). Probe deployment allows for greater...

Donald M. Dawes M.D.; Jeffrey D. Ho M.D.

2012-01-01T23:59:59.000Z

74

Low temperature proton conducting oxide devices  

DOE Patents (OSTI)

A device for conducting protons at a temperature below 550.degree. C. includes a LAMOX ceramic body characterized by an alpha crystalline structure.

Armstrong, Timothy R. (Clinton, TN); Payzant, Edward A. (Oak Ridge, TN); Speakman, Scott A. (Oak Ridge, TN); Greenblatt, Martha (Highland Park, NJ)

2008-08-19T23:59:59.000Z

75

EPA -- Addressing Children's Health through Reviews Conducted...  

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

Addressing Children's Health through Reviews Conducted Pursuant to the National Environmental Policy Act and Section 309 of the Clean Air Act EPA -- Addressing Children's Health...

76

Conductivity measurement on thick insulating plaque samples.  

E-Print Network (OSTI)

?? The conductivity is one of the main properties of HVDC cable insulation materials and needs to be evaluated carefully. Since measurement on cables is… (more)

Huldén, Pierre

2014-01-01T23:59:59.000Z

77

Functionally Graded Cathodes for Solid Oxide Fuel Cells  

SciTech Connect

This DOE SECA project focused on both experimental and theoretical understanding of oxygen reduction processes in a porous mixed-conducting cathode in a solid oxide fuel cell (SOFC). Elucidation of the detailed oxygen reduction mechanism, especially the rate-limiting step(s), is critical to the development of low-temperature SOFCs (400 C to 700 C) and to cost reduction since much less expensive materials may be used for cell components. However, cell performance at low temperatures is limited primarily by the interfacial polarization resistances, specifically by those associated with oxygen reduction at the cathode, including transport of oxygen gas through the porous cathode, the adsorption of oxygen onto the cathode surface, the reduction and dissociation of the oxygen molecule (O{sub 2}) into the oxygen ion (O{sup 2-}), and the incorporation of the oxygen ion into the electrolyte. In order to most effectively enhance the performance of the cathode at low temperatures, we must understand the mechanism and kinetics of the elementary processes at the interfaces. Under the support of this DOE SECA project, our accomplishments included: (1) Experimental determination of the rate-limiting step in the oxygen reduction mechanism at the cathode using in situ FTIR and Raman spectroscopy, including surface- and tip-enhanced Raman spectroscopy (SERS and TERS). (2) Fabrication and testing of micro-patterned cathodes to compare the relative activity of the TPB to the rest of the cathode surface. (3) Construction of a mathematical model to predict cathode performance based on different geometries and microstructures and analyze the kinetics of oxygen-reduction reactions occurring at charged mixed ionic-electronic conductors (MIECs) using two-dimensional finite volume models with ab initio calculations. (4) Fabrication of cathodes that are graded in composition and microstructure to generate large amounts of active surface area near the cathode/electrolyte interface using a novel combustion chemical vapor deposition (CCVD) technique. (5) Application of advanced quantum chemical calculations to interpret measured spectroscopic information, as well as to guide design of high efficient cathode materials.

YongMan Choi; Meilin Liu

2006-09-30T23:59:59.000Z

78

OPTIMAL INSULATION DISTRIBUTION OVER A CONDUCTING BODY  

Science Journals Connector (OSTI)

......research-article Articles OPTIMAL INSULATION DISTRIBUTION OVER A CONDUCTING BODY...conducted. Over the rest a given amount of insulation is assumed to be spread. Its pointwise...surroundings. Observe that thickening of the insulation at one point involves thinning elsewhere......

MICHAEL BETWICH

1983-02-01T23:59:59.000Z

79

STUDENT CONDUCT CODE (Approved June 16, 2006)  

E-Print Network (OSTI)

CHAPTER 8 STUDENT CONDUCT CODE (Approved June 16, 2006) 8.010. Purpose 8.020. Definitions 8 of the conduct of all students" and "to enforce obedience to the rules." Although the grant of authority is broadly stated, it is well recognized that students are citizens. Students have legal rights, and deserve

Gering, Jon C.

80

Proton conducting ceramic membranes for hydrogen separation  

DOE Patents (OSTI)

A multi-phase proton conducting material comprising a proton-conducting ceramic phase and a stabilizing ceramic phase. Under the presence of a partial pressure gradient of hydrogen across the membrane or under the influence of an electrical potential, a membrane fabricated with this material selectively transports hydrogen ions through the proton conducting phase, which results in ultrahigh purity hydrogen permeation through the membrane. The stabilizing ceramic phase may be substantially structurally and chemically identical to at least one product of a reaction between the proton conducting phase and at least one expected gas under operating conditions of a membrane fabricated using the material. In a barium cerate-based proton conducting membrane, one stabilizing phase is ceria.

Elangovan, S. (South Jordan, UT); Nair, Balakrishnan G. (Sandy, UT); Small, Troy (Midvale, UT); Heck, Brian (Salt Lake City, UT)

2011-09-06T23:59:59.000Z

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


81

The Organic Chemistry of Conducting Polymers  

SciTech Connect

For the last several years, we have examined the fundamental principles of conduction in one-dimensional systems, i.e., molecular “wires”. It is, of course, widely recognized that such systems, as components of electronically conductive materials, function in a two- and three-dimensional milieu. Thus interchain hopping and grain-boundary resistivity are limiting conductivity factors in highly conductive materials, and overall conductivity is a function of through-chain and boundary hopping. We have given considerable attention to the basic principles underlying charge transport (the “rules of the game”) in two-dimensional systems by using model systems which allow direct observation of such processes, including the examination of tunneling and hopping as components of charge transfer. In related work, we have spent considerable effort on the chemistry of conjugated heteropolymers, most especially polythiophens, with the aim of using these most efficient of readily available electroactive polymers in photovoltaic devices.

Tolbert, Laren Malcolm [Georgia Institute of Technology

2014-12-01T23:59:59.000Z

82

Proton Conductivity Studies on Biopolymer Electrolytes  

SciTech Connect

Proton conducting solid biopolymer electrolyte membranes consisting of methyl cellulose (MC) and different wt.% of ammonium nitrate (NH{sub 4}NO{sub 3}) were prepared by solution cast technique. Impedance spectroscopy was carried out to study electrical characteristics of bulk materials. The ionic conductivity of the prepared samples was calculated using the bulk resistance (R{sub b}) obtained from impedance spectroscopy plot. The highest ionic conductivity obtained was 1.17x10{sup -4} Scm{sup -1} for the sample with composition ratio of MC(50): NH{sub 4}NO{sub 3}(50). To enhance the ionic conductivity, propylene carbonate (PC) and ethylene carbonate (EC) plasticizers were introduced. It was found that the ionic conductivity of polymer electrolyte membranes increased with the increase in plasticizers concentration. The ionic conductivities of solid polymer electrolytes based on MC-NH{sub 4}NO{sub 3}-PC was enhanced up to 4.91x10{sup -3} Scm{sup -1} while for the MC-NH{sub 4}NO{sub 3}-EC system, the highest conductivity was 1.74x10{sup -2} Scm{sup -1}. The addition of more plasticizer however decreases in mechanical stability of the membranes.

Harun, N. I.; Sabri, N. S.; Rosli, N. H. A.; Taib, M. F. M.; Saaid, S. I. Y.; Kudin, T. I. T. [Faculty of Applied Sciences, Universiti Teknologi MARA, 40450 Shah Alam, Selangor (Malaysia); Ali, A. M. M.; Yahya, M. Z. A. [Faculty of Applied Sciences, Universiti Teknologi MARA, 40450 Shah Alam, Selangor (Malaysia); Institute of Science, Universiti Teknologi MARA, 40450 Shah Alam, Selangor (Malaysia)

2010-07-07T23:59:59.000Z

83

Electrical and thermal conductivities in dense plasmas  

SciTech Connect

Expressions for the electrical and thermal conductivities in dense plasmas are derived combining the Chester-Thellung-Kubo-Greenwood approach and the Kramers approximation. The infrared divergence is removed assuming a Drude-like behaviour. An analytical expression is obtained for the Lorenz number that interpolates between the cold solid-state and the hot plasma phases. An expression for the electrical resistivity is proposed using the Ziman-Evans formula, from which the thermal conductivity can be deduced using the analytical expression for the Lorenz number. The present method can be used to estimate electrical and thermal conductivities of mixtures. Comparisons with experiment and quantum molecular dynamics simulations are done.

Faussurier, G., E-mail: gerald.faussurier@cea.fr; Blancard, C.; Combis, P.; Videau, L. [CEA, DAM, DIF, F-91297 Arpajon (France)

2014-09-15T23:59:59.000Z

84

Electrical conductivity of shock compressed xenon  

Science Journals Connector (OSTI)

The results on measurements of electrical conductivity of shock compressed gaseous and liquid xenon are discussed. Thermodynamical parameters of xenon are calculated in frames of plasma chemical model. To estimate electrical conductivity modified Ziman theory is used. A reasonable agreement between experimental and theoretical data on equation of state and transport properties is shown in a wide range of parameters from gas to liquid densities pressures 10–140 GPa and temperatures >5000 K. New experimental data on measurements of equation of state and conductivity of xenon under multiple shock compression are presented.

Victor B. Mintsev; Vladimir Ya. Ternovoi; Victor K. Gryaznov; Alexei A. Pyalling; Vladimir E. Fortov; Igor L. Iosilevskii

2000-01-01T23:59:59.000Z

85

Electrical conductivity of warm dense tungsten  

Science Journals Connector (OSTI)

Abstract The electrical conductivity of warm dense tungsten plasma has been investigated successfully by a linear mixture rule considering various interactions of electrons with electrons, atoms, and ions. The plasma composition is calculated by the nonideal Saha equation. The interesting regime for tungsten plasma spans from weakly coupled and nondegenerate regime to strongly coupled and partial degenerate state. The electrical conductivity calculated is in reasonable agreement with the exploding wire experiments and other theoretical models. The present result demonstrates that the theoretical model is valid for the electrical conductivity of tungsten plasma in the warm dense matter regime.

Zhijian Fu; Lijun Jia; Xiaowei Sun; Qifeng Chen

2013-01-01T23:59:59.000Z

86

Method and apparatus for casting conductive and semi-conductive materials  

DOE Patents (OSTI)

A method and apparatus is disclosed for casting conductive and semi-conductive materials. The apparatus includes a plurality of conductive members arranged to define a container-like area having a desired cross-sectional shape. A portion or all of the conductive or semi-conductive material which is to be cast is introduced into the container-like area. A means is provided for inducing the flow of an electrical current in each of the conductive members, which currents act collectively to induce a current flow in the material. The induced current flow through the conductive members is in a direction substantially opposite to the induced current flow in the material so that the material is repelled from the conductive members during the casting process.

Ciszek, T.F.

1984-08-13T23:59:59.000Z

87

Characterization of macro-length conducting polymers and the development of a conducting polymer rotary motor  

E-Print Network (OSTI)

Conducting polymers are a subset of materials within the electroactive polymer class that exhibit active mechanical deformations. These deformations induce stresses and strains that allow for conducting polymers to be used ...

Schmid, Bryan D. (Bryan David), 1981-

2005-01-01T23:59:59.000Z

88

Investigation of the effect of gel residue on hydraulic fracture conductivity using dynamic fracture conductivity test  

E-Print Network (OSTI)

INVESTIGATION OF THE EFFECT OF GEL RESIDUE ON HYDRAULIC FRACTURE CONDUCTIVITY USING DYNAMIC FRACTURE CONDUCTIVITY TEST A Thesis by FIVMAN MARPAUNG Submitted to the Office of Graduate Studies of Texas A&M University in partial... fulfillment of the requirements for the degree of MASTER OF SCIENCE December 2007 Major Subject: Petroleum Engineering INVESTIGATION OF THE EFFECT OF GEL RESIDUE ON HYDRAULIC FRACTURE CONDUCTIVITY USING DYNAMIC FRACTURE CONDUCTIVITY TEST A...

Marpaung, Fivman

2008-10-10T23:59:59.000Z

89

Standards of Student Conduct: A Guide to the University of Rochester Conduct  

E-Print Network (OSTI)

Standards of Student Conduct: A Guide to the University of Rochester Conduct Process and Policies 2012-2013 Center for Student Conflict Management #12;2 STANDARDS OF STUDENT CONDUCT A Guide Student Handbook, the Residential Community Standards material, the Resident Network Acceptable Use Policy

Portman, Douglas

90

Thermal Conductivity in Nanocrystalline Ceria Thin Films  

SciTech Connect

The thermal conductivity of nanocrystalline ceria films grown by unbalanced magnetron sputtering is determined as a function of temperature using laser-based modulated thermoreflectance. The films exhibit significantly reduced conductivity compared with stoichiometric bulk CeO2. A variety of microstructure imaging techniques including X-ray diffraction, scanning and transmission electron microscopy, X-ray photoelectron analysis, and electron energy loss spectroscopy indicate that the thermal conductivity is influenced by grain boundaries, dislocations, and oxygen vacancies. The temperature dependence of the thermal conductivity is analyzed using an analytical solution of the Boltzmann transport equation. The conclusion of this study is that oxygen vacancies pose a smaller impediment to thermal transport when they segregate along grain boundaries.

Marat Khafizov; In-Wook Park; Aleksandr Chernatynskiy; Lingfeng He; Jianliang Lin; John J. Moore; David Swank; Thomas Lillo; Simon R. Phillpot; Anter El-Azab; David H. Hurley

2014-02-01T23:59:59.000Z

91

Synthesis and characterization of conducting polymer actuators  

E-Print Network (OSTI)

Conducting polymers are known to mechanically respond to electrochemical stimuli and have been utilized as linear actuators. To date, the most successful mechanism for actuation is ionic ingress and egress, though mechanisms ...

Vandesteeg, Nathan A. (Nathan Alan)

2007-01-01T23:59:59.000Z

92

Large displacement fast conducting polymer actuators  

E-Print Network (OSTI)

Conducting polymers are a promising class of electroactive materials that undergo volumetric changes under applied potentials, which make them particularly useful for many actuation applications. Polypyrrole , is one of ...

Chen, Angela Y. (Angela Ying-Ju), 1982-

2006-01-01T23:59:59.000Z

93

Environmental Assessment for Conducting Astrophysics and Other...  

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

and Other Basic Science Experiments at the WIPP Site A-14 The existing WIPP Conduct of Operations process implements the long-term stewardship process that will govern all...

94

Modeling tensorial conductivity of particle suspension networks  

E-Print Network (OSTI)

Significant microstructural anisotropy is known to develop during shearing flow of attractive particle suspensions. These suspensions, and their capacity to form conductive networks, play a key role in flow-battery technology, among other applications. Herein, we present and test an analytical model for the tensorial conductivity of attractive particle suspensions. The model utilizes the mean fabric of the network to characterize the structure, and the relationship to the conductivity is inspired by a lattice argument. We test the accuracy of our model against a large number of computer-generated suspension networks, based on multiple in-house generation protocols, giving rise to particle networks that emulate the physical system. The model is shown to adequately capture the tensorial conductivity, both in terms of its invariants and its mean directionality.

Tyler Olsen; Ken Kamrin

2015-01-13T23:59:59.000Z

95

Electronic Structure Calculations on Helical Conducting Polymers  

Science Journals Connector (OSTI)

Electronic Structure Calculations on Helical Conducting Polymers ... Therefore, we select the B3LYP/6-31G* methodology to calculate the oligomers. ... Table 3 shows several calculated parameters. ...

Juan D. Ripoll; Andrei Serna; Doris Guerra; Albeiro Restrepo

2010-09-28T23:59:59.000Z

96

Electrical conductivity of nondegenerate, fully ionized plasmas  

Science Journals Connector (OSTI)

Within a virial expansion of the electrical conductivity of a fully ionized plasma, which takes into account many-particle effects, different limiting cases are considered. An appropriate interpolation formula is compared with experimental values.

G. Röpke and R. Redmer

1989-01-15T23:59:59.000Z

97

Application of Conducting Polymers in Chemical Analysis  

Science Journals Connector (OSTI)

This paper presents recent achievements in the field of analytical application of conducting polymers, most of which were published in the last five years. Based on 171 references mainly to original papers in...

Marek Trojanowicz

2003-12-01T23:59:59.000Z

98

Fracture Conductivity of the Eagle Ford Shale  

E-Print Network (OSTI)

conductivity is influenced by several variables including fracture surface roughness, fracture closure stress, proppant size, and proppant concentration. The proppant concentration within a fracture can significantly affect the magnitude of fracture...

Guzek, James J

2014-07-25T23:59:59.000Z

99

Thermal conductance of metal-metal interfaces  

Science Journals Connector (OSTI)

The thermal conductance of interfaces between Al and Cu is measured in the temperature range 78conductance of the as-deposited Al-Cu interface is 4GWm?2K?1 at room temperature, an order-of-magnitude larger than the phonon-mediated thermal conductance of typical metal-dielectric interfaces. The magnitude and the linear temperature dependence of the conductance are described well by a diffuse-mismatch model for electron transport at interfaces.

Bryan C. Gundrum; David G. Cahill; Robert S. Averback

2005-12-30T23:59:59.000Z

100

Transparent conducting oxides and production thereof  

SciTech Connect

Transparent conducting oxides and production thereof are disclosed. An exemplary method of producing a transparent conducting oxide (TCO) material may comprise: providing a TCO target doped with either a high-permittivity oxide or a low-permittivity oxide in a process chamber. The method may also comprise depositing a metal oxide on the target in the process chamber to form a thin film having enhanced optical properties without substantially decreasing electrical quality.

Gessert, Timothy A.; Yoshida, Yuki; Coutts, Timothy J.

2014-06-10T23:59:59.000Z

Note: This page contains sample records for the topic "ionic-electronic conductivity miec" 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

Transparent conducting oxides and production thereof  

SciTech Connect

Transparent conducting oxides and production thereof are disclosed. An exemplary method of producing a transparent conducting oxide (TCO) material may comprise: providing a TCO target (110) doped with either a high-permittivity oxide or a low-permittivity oxide in a process chamber (100). The method may also comprise depositing a metal oxide on the target (110) to form a thin film having enhanced optical properties without substantially decreasing electrical quality.

Gessert, Timothy A; Yoshida, Yuki; Coutts, Timothy J

2014-05-27T23:59:59.000Z

102

Horticultural marketing in Kenya: conduct and performance  

E-Print Network (OSTI)

HORTICULTURAL MARKETING IN KENYA: CONDUCT AND PERFORMANCE A Thesis by DICKSON TEYIE MUTOKA Submitted to the Graduate College of Texas A&M University in partial fulfillment of tne requirement for the degree of MASTER OF SCIENCE May 1981... Major Subject: Agricultural Economics HORTICULTURAL MARKETING IN KEl&A: CONDUCT AND PERFGRl4lMNCE A Thesis by DICKSOM TEYIE NUTGKA Approved as to style and content by: (Chairman of Committee) ~n (Member) (Head of Departmen ABSTRACT...

Mutoka, Dickson Teyie

2012-06-07T23:59:59.000Z

103

Electrical Conductivity of a Dense Plasma  

Science Journals Connector (OSTI)

The ac electrical conductivity of a dense plasma is studied by use of reflectivity measurements on the rear surface of a laser-irradiated planar target. The results show general agreement with theory in which a minimum collision mean free path is assumed, yielding correspondingly a minimum conductivity. However, the results also suggest that the minimum mean free path is greater than the interatomic radius.

A. Ng, D. Parfeniuk, P. Celliers, L. DaSilva, R. M. More, and Y. T. Lee

1986-09-29T23:59:59.000Z

104

Thermal Conductance of Thin Silicon Nanowires  

Science Journals Connector (OSTI)

The thermal conductance of individual single crystalline silicon nanowires with diameters less than 30 nm has been measured from 20 to 100 K. The observed thermal conductance shows unusual linear temperature dependence at low temperatures, as opposed to the T3 dependence predicted by the conventional phonon transport model. In contrast to previous models, the present study suggests that phonon-boundary scattering is highly frequency dependent, and ranges from nearly ballistic to completely diffusive, which can explain the unexpected linear temperature dependence.

Renkun Chen, Allon I. Hochbaum, Padraig Murphy, Joel Moore, Peidong Yang, and Arun Majumdar

2008-09-02T23:59:59.000Z

105

Conduction of Electricity in Highly Insulating Liquids  

Science Journals Connector (OSTI)

Investigations have been made on the natural conductivity, and on the conductivity induced by gamma-rays in isooctane and liquid oxygen. The characteristics of the two types of conductivity are so very different that it may be concluded that the natural conductivity is not due to stray radiation or to cosmic rays. The curves for the natural conductivity are such that the current increases much faster than the field. Evidence is presented supporting Plumley's theory that the observed conductivity is due to dissociation of the liquids by the field, and against the view that it has a thermionic origin at the cathode, or the view that it is due to radiation. The prediction that the logarithm of the current should be a linear function of the square root of the field is verified. The much larger currents induced by gamma-rays rise at first rapidly and then more slowly in a manner indicating a slow approach toward saturation. The results fit Jaffé's formula satisfactorily.

Chia-Shan Pao

1943-08-01T23:59:59.000Z

106

Cation Defects and Conductivity in Transparent Oxides  

SciTech Connect

High quality doped zinc oxide and mixed transition metal spinel oxide films have been deposited by means of sputter deposition from metal and metal oxide targets, and by spin casting from aqueous or alcoholic precursor solutions. Deposition conditions and post-deposition processing are found to alter cation oxidation states and their distributions in both oxide materials resulting in marked changes to both optical transmission and electrical response. For ZnO, partial reduction of the neat or doped material by hydrogen treatment of the heated film or by electrochemical processing renders the oxide n-type conducting. Continued reduction was found to diminish conductivity. In contrast, oxidation of the infrared transparent p-type spinel conductors typified by NiCo2O4 was found to increase conductivity. The disparate behavior of these two materials is caused in part by the sign of the charge carrier and by the existence of two different charge transport mechanisms that are identified as free carrier conduction and polaron hopping. While much work has been reported concerning structure/property relationships in the free carrier conducting oxides, there is a significantly smaller body of information on transparent polaron conductors. In this paper, we identify key parameters that promote conductivity in mixed metal spinel oxides and compare their behavior with that of the free carrier TCO’s.

Exarhos, Gregory J.; Windisch, Charles F.; Ferris, Kim F.; Owings, Robert R.

2007-10-24T23:59:59.000Z

107

Photo-electric Conduction in Selenium  

Science Journals Connector (OSTI)

Variation with light intensity of the photo-current in selenium.—A selenium cell is described which gives a photo-current of 10 ma. for a difference of potential of 100 volts and an illumination of 100 foot-candles. The sensitiveness ratio between the currents under light and dark conditions is 100. The characteristics of the cell are very constant. The experimental results establish the existence of a linear relation between the square of the photo-current and the light intensity. It is pointed out that this result substantiates the conclusion that the photo-conduction in selenium is due to a photo-electric liberation of electrons rather than to an allotropic change from an insulating to a conducting form of selenium.Effect of temperature on the photo-conductivity of selenium.—Under dark conditions the current through a cell immersed in liquid air dropped in 15 sec. to 35 percent of its value at room temperature, and in 10 min. to 0.000046 percent. When the same cell was illuminated with 100 foot-candles and immersed in liquid air, the current increased for 8 min. to about 1.8 times its value at room temperature and then decreased until after 3 hours its value was 82 percent of its value at room temperature. It is concluded that the mechanism of the current conduction under dark conditions is entirely different from that of the photo-conduction.

R. J. Piersol

1927-11-01T23:59:59.000Z

108

Quantum conductance of zigzag graphene oxide nanoribbons  

SciTech Connect

The electronic properties of zigzag graphene oxide nanoribbons (ZGOR) are presented. The results show interesting behaviors which are considerably different from the properties of the perfect graphene nanoribbons (GNRs). The theoretical methods include a Huckel-tight binding approach, a Green's function methodology, and the Landauer formalism. The presence of oxygen on the edge results in band bending, a noticeable change in density of states and thus the conductance. Consequently, the occupation in the valence bands increase for the next neighboring carbon atom in the unit cell. Conductance drops in both the conduction and valence band regions are due to the reduction of allowed k modes resulting from band bending. The asymmetry of the energy band structure of the ZGOR is due to the energy differences of the atoms. The inclusion of a foreign atom's orbital energies changes the dispersion relation of the eigenvalues in energy space. These novel characteristics are important and valuable in the study of quantum transport of GNRs.

Kan, Zhe; Nelson, Christopher; Khatun, Mahfuza, E-mail: mkhatun@bsu.edu [Department of Physics and Astronomy, Center for Computational Nanoscience, Ball State University, Muncie, Indiana 47306 (United States)

2014-04-21T23:59:59.000Z

109

Casimir energy for surfaces with constant conductivity  

E-Print Network (OSTI)

We consider the vacuum energy of the electromagnetic field in systems characterized by a constant conductivity using the zeta-regularization approach. The interaction in two cases is investigated: two infinitely thin parallel sheets and an infinitely thin spherical shell. We found that the Casimir energy for the planar system is always attractive and it has the same characteristic distance dependence as the interaction for two perfect semi-infinite metals. The Casimir energy for the spherical shell depends on the inverse radius of the sphere, but it maybe negative or positive depending on the value of the conductivity. If the conductivity is less than a certain critical value, the interaction is attractive, otherwise the Casimir force is repulsive regardless of the spherical shell radius.

Nail Khusnutdinov; D. Drosdoff; Lilia M. Woods

2014-04-09T23:59:59.000Z

110

Liquid Propane Injection Technology Conductive to Today's North...  

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

Technology Conductive to Today's North American Specification Liquid Propane Injection Technology Conductive to Today's North American Specification Liquid propane injection...

111

Anion Exchange Membranes - Transport/Conductivity  

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

Fundamental understanding Fundamental understanding * Driving membranes towards applications Anion Exchange Membranes - Transport/Conductivity High Priority * A need for a standard/available AEM (similar to Nafion in PEMs) * Define standard experimental conditions and protocols * A need for much more fundamental studies in transport mechanisms and mechanical properties * A need to develop much more new AEMs with alternative chemistries (new cation and backbone chemistries) Fundamental Studies * TRANSPORT * Conductivity (pure OH - hard to measure) * Water content, λ * Diffusion coefficients, NMR * Drag coefficients * Transference * Solubility * Fundamental transport mechanisms for anion and water transport * Computational Modeling * MORPHOLOGY/CHEMISTRY * Vibrational Spectroscopy: FTIR, Raman

112

Scaling of the conductance in gold nanotubes  

Science Journals Connector (OSTI)

A new form of gold nanobridges has been recently observed in ultrahigh-vacuum experiments, where gold atoms rearrange to build helical nanotubes, akin in some respects to carbon nanotubes. The good reproducibility of these wires and their unexpected stability allow for conductance measurements and make them promising candidates for future applications. We present here a study of the transport properties of these nanotubes in order to understand the role of chirality and of the different orbitals in quantum transport observables. The conductance per atomic row shows a light decreasing trend as the diameter grows, which is also shown through an analytical formula based on a one-orbital model.

Miriam del Valle; Carlos Tejedor; Gianaurelio Cuniberti

2006-07-10T23:59:59.000Z

113

Electronic conduction through single crystals of polyethylene  

E-Print Network (OSTI)

May, 1966 Major Subjects Physics ELECTRONIC CONDUCTION THROUGH SINGLE CRYSTRLS OF POLYETHYLENE k Thesis By Gerald Maurice Samson Approved as to style and content by: naen of the Committee ad of the D artment ber ber c- The autho. u... talc o Polyot! ylone . -y, i'oo Gerald !':cur"' co Samson Directed by: Zr. Joe S. The predominant conduction mechani m through single cryo' mls op polyethylene is shown to be Schott!cy ( hernal) oui "sion . or tompora- o tu. es - bove 0 C. . "or...

Samson, Gerald Maurice

1966-01-01T23:59:59.000Z

114

The hydraulic conductivity of chopped sorghum forage  

E-Print Network (OSTI)

ZL Kn H, Hg Hs ? H4 Hs ? H 6 Ln Hn+ & Q = flow rate L = layer thickness H = hydrostatic head Figure 3. Constnnt hend permenmeter for n mnterini mnde up of lngers of verging conductiviifes. 10 K is the hydraulic conductivity of a layer... will henceforth be called simply the hydraulic conductivity, K) was calculated using the equation. Q~XL A H7-Hi (Eq. 6) where H7-Hi is the head difference between the first and seventh pressure taps. Darcy's law, which is valid only for laminar flow...

Custer, Micheal Hugh

2012-06-07T23:59:59.000Z

115

Conduct of Operations and Quality Assurance Compliance  

SciTech Connect

The purpose of this document is to present and detail the deliverables for the Tiger Team Action Plan, Finding MF-11, and milestones in the FY92 Performance Appraisal for Conduct of Operations from Sandia National Laboratories to DOE. The ``Proposal for Reporting Conduct of Operations & Quality Assurance Compliance to DOE`` describes what the deliverables shall be. Five major steps that result in the development of line practices are covered in this document. These line practices specify what Sandia will do to comply with the above DOE management orders. The five steps include: hazard classification; programmatic risk classification; management grouping; compliance plan; and corporate reporting.

Andrews, N.S.

1992-06-01T23:59:59.000Z

116

Conduct of Operations and Quality Assurance Compliance  

SciTech Connect

The purpose of this document is to present and detail the deliverables for the Tiger Team Action Plan, Finding MF-11, and milestones in the FY92 Performance Appraisal for Conduct of Operations from Sandia National Laboratories to DOE. The Proposal for Reporting Conduct of Operations Quality Assurance Compliance to DOE'' describes what the deliverables shall be. Five major steps that result in the development of line practices are covered in this document. These line practices specify what Sandia will do to comply with the above DOE management orders. The five steps include: hazard classification; programmatic risk classification; management grouping; compliance plan; and corporate reporting.

Andrews, N.S.

1992-06-01T23:59:59.000Z

117

Electrical conductivity of dense metal plasmas  

Science Journals Connector (OSTI)

The composition of dense metal plasmas is calculated considering higher ionization stages of the atoms. A system of coupled mass action laws is solved self-consistently taking into account medium corrections which lead to pressure ionization at high densities. The electrical conductivity is calculated within linear response theory. The interactions between the various species are treated on T matrix level. The numerical results for the electrical conductivity are in reasonable agreement with new experimental data for nonideal Al and Cu plasmas. Comparison with other theories is performed.

Ronald Redmer

1999-01-01T23:59:59.000Z

118

Some Remarks on Lattice Thermal Conductivity  

Science Journals Connector (OSTI)

The problem of lattice thermal conductivity (in an insulator) has been outstanding for many years. Debye and Peierls made fundamental contributions in relating finite thermal conductivity to anharmonic interactions between the normal modes of lattice vibration; detailed analysis and calculation however remains today a difficult problem. This paper presents a rather crude and elementary discussion of the problem for “classical” temperatures (T??) which yields a semiquantitative result in agreement with other workers. We are also able to make a rather direct estimate of the probable magnitude of the contribution to the thermal resistivity which arises from the quartic term in the lattice potential.

D. K. C. MacDonald

1960-01-01T23:59:59.000Z

119

Thermal Conductivity and Noise Attenuation in  

E-Print Network (OSTI)

.3.4 Corrosion-resistant and high-temperature filters 9 1.3.5 Acoustic Applications 9 2. THERMAL CONDUCTIVITY 2.1 THERMAL RESISTANCE 2.1.1 Thermal Conductors in Series 12 2.1.2 Thermal conductors in parallel 13 2 difference RTH Thermal resistance of conductor sb Stefan's constant T4 Temperature difference K* Total

Cambridge, University of

120

Conduct of Operations Requirements for DOE Facilities  

Directives, Delegations, and Requirements

"To provide requirements and guidelines for Departmental Elements, including the National Nuclear Security Administration (NNSA), to use in developing directives, plans, and/or procedures relating to the conduct of operations at DOE facilities. The implementation of these requirements and guidelines should result in improved quality and uniformity of operations. Change 2, 10-23-2001. Canceled by DOE O 422.1.

1990-07-09T23:59:59.000Z

Note: This page contains sample records for the topic "ionic-electronic conductivity miec" 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

Thermal conductivity of low density carbon aerogels  

Science Journals Connector (OSTI)

Carbon aerogels with densities ranging from 0.182 to 0.052 g/cm3, pore sizes ranging from 88 to 227 nm, and particle diameters ranging from 20 to 13 nm were prepared. Thermal conductivity measurements by laser fl...

Junzong Feng; Jian Feng; Changrui Zhang

2012-10-01T23:59:59.000Z

122

High-Frequency Conductivity of Degenerate Semiconductors  

Science Journals Connector (OSTI)

The problem of high-frequency conductivity of a degenerate semiconductor is investigated by a kinetic description. The finite duration of encounters is taken into account in a self-consistent fashion which properly includes collective effects. This treatment is an extension for quantum plasmas of the Dawson-Oberman method given for classical plasmas.

Amiram Ron and Narkis Tzoar

1963-09-01T23:59:59.000Z

123

Faculty and Staff Commute Report Conducted by  

E-Print Network (OSTI)

Faculty and Staff Commute Report July 2008 Conducted by #12;Executive Summary The price of gasoline at Austin is $91.35 per month. With no relief in sight to rising gasoline prices, employees are increasingly to accommodate future vehicles, such as installing charging stations on campus for plug in cars. #12;Faculty

Yang, Zong-Liang

124

Review article Influence of electric conductivity management  

E-Print Network (OSTI)

Review article Influence of electric conductivity management on greenhouse tomato yield and fruit quality Martine DORAISa,b*, Athanasios P. PAPADOPOULOSa, André GOSSELINb a Greenhouse and Processing Crops Horticulture, Université Laval, Sainte-Foy, QC, G1K 7P4, Canada (Received 3 August 2000; revised 6 February

Boyer, Edmond

125

IONICALLY CONDUCTING MEMBRANES FOR HYDROGEN PRODUCTION AND  

E-Print Network (OSTI)

operating experience. #12;ELTRON RESEARCH INC. Syngas Production Rate ­ 60 mL/min cm2 @ 900°C Equivalent O2IONICALLY CONDUCTING MEMBRANES FOR HYDROGEN PRODUCTION AND SEPARATION Presented by Tony Sammells for Hydrogen Production ­ Compositions ­ Feedstocks ­ Performance ­ Key Technical Hurdles · Membranes

126

Heat conductivity of a pion gas  

E-Print Network (OSTI)

We evaluate the heat conductivity of a dilute pion gas employing the Uehling-Uehlenbeck equation and experimental phase-shifts parameterized by means of the SU(2) Inverse Amplitude Method. Our results are consistent with previous evaluations. For comparison we also give results for an (unphysical) hard sphere gas.

Antonio Dobado Gonzalez; Felipe J. Llanes-Estrada; Juan M. Torres Rincon

2007-02-13T23:59:59.000Z

127

Sampling artifacts from conductive silicone tubing  

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

Sampling artifacts from conductive silicone tubing Sampling artifacts from conductive silicone tubing Title Sampling artifacts from conductive silicone tubing Publication Type Journal Article Year of Publication 2009 Authors Timko, Michael T., Zhenhong Yu, Jesse Kroll, John T. Jayne, Douglas R. Worsnop, Richard C. Miake-Lye, Timothy B. Onasch, David Liscinsky, Thomas W. Kirchstetter, Hugo Destaillats, Amara L. Holder, Jared D. Smith, and Kevin R. Wilson Journal Aerosol Science and Technology Volume 43 Issue 9 Pagination 855-865 Date Published 06/03/2009 Abstract We report evidence that carbon impregnated conductive silicone tubing used in aerosol sampling systems can introduce two types of experimental artifacts: (1) silicon tubing dynamically absorbs carbon dioxide gas, requiring greater than 5 minutes to reach equilibrium and (2) silicone tubing emits organic contaminants containing siloxane that are adsorbed onto particles traveling through it and onto downstream quartz fiber filters. The consequence can be substantial for engine exhaust measurements as both artifacts directly impact calculations of particulate mass-based emission indices. The emission of contaminants from the silicone tubing can result in overestimation of organic particle mass concentrations based on real-time aerosol mass spectrometry and the off-line thermal analysis of quartz filters. The adsorption of siloxane contaminants can affect the surface properties of aerosol particles; we observed a marked reduction in the water-affinity of soot particles passed through conductive silicone tubing. These combined observations suggest that the silicone tubing artifacts may have wide consequence for the aerosol community and the tubing should, therefore, be used with caution. Contamination associated with the use of silicone tubing was observed at ambient temperature and, in some cases, was enhanced by mild heating (<70°C) or pre-exposure to a solvent (methanol). Further evaluation is warranted to quantify systematically how the contamination responds to variations in system temperature, physicochemical particle properties, exposure to solvent, sample contact time, tubing age, and sample flow rates.

128

Conduct of Operations Criteria, Review, & Approach Documents | Department  

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

Conduct of Operations Criteria, Review, & Approach Documents Conduct of Operations Criteria, Review, & Approach Documents Conduct of Operations Criteria, Review, & Approach Documents Documents Available for Download CRAD, Conduct of Operations - Idaho MF-628 Drum Treatment Facility CRAD, Conduct of Operations - Idaho Accelerated Retrieval Project Phase II CRAD, Conduct of Operations - Los Alamos National Laboratory TA 55 SST Facility CRAD, Conduct of Operations - Los Alamos National Laboratory Waste Characterization, Reduction, and Repackaging Facility CRAD, Conduct of Operations - Oak Ridge National Laboratory High Flux Isotope Reactor CRAD, Conduct of Operations - Oak Ridge National Laboratory High Flux Isotope Reactor Contractor ORR CRAD, Conduct of Operations - Oak Ridge National Laboratory TRU ALPHA LLWT Project

129

Appendix A: Committee on Student Conduct Hearing Procedures Committee on Student Conduct Hearing Procedures  

E-Print Network (OSTI)

Appendix A: Committee on Student Conduct Hearing Procedures Committee on Student Conduct Hearing Procedures A. Introduction B. Parties to the Complaint C. Committee and Panels D. Cases of Physical. For the purpose of these procedures, the parties are identified as the University presenter and the accused

Amin, S. Massoud

130

M. Bahrami ENSC 388 (F09) Steady Conduction Heat Transfer 1 Steady Heat Conduction  

E-Print Network (OSTI)

resistance of the wall. The heat transfer across the fluid/solid interface is based on Newton's law M. Bahrami ENSC 388 (F09) Steady Conduction Heat Transfer 1 Steady Heat Conduction In thermodynamics, we considered the amount of heat transfer as a system

Bahrami, Majid

131

Helicopter magnetic survey conducted to locate wells  

SciTech Connect

A helicopter magnetic survey was conducted in August 2007 over 15.6 sq mi at the Naval Petroleum Reserve No. 3’s (NPR-3) Teapot Dome Field near Casper, Wyoming. The survey’s purpose was to accurately locate wells drilled there during more than 90 years of continuous oilfield operation. The survey was conducted at low altitude and with closely spaced flight lines to improve the detection of wells with weak magnetic response and to increase the resolution of closely spaced wells. The survey was in preparation for a planned CO2 flood for EOR, which requires a complete well inventory with accurate locations for all existing wells. The magnetic survey was intended to locate wells missing from the well database and to provide accurate locations for all wells. The ability of the helicopter magnetic survey to accurately locate wells was accomplished by comparing airborne well picks with well locations from an intense ground search of a small test area.

Veloski, G.A.; Hammack, R.W.; Stamp, V. (Rocky Mountain Oilfield Testing Center); Hall, R. (Rocky Mountain Oilfield Testing Center); Colina, K. (Rocky Mountain Oilfield Testing Center)

2008-07-01T23:59:59.000Z

132

Enhancing Thermal Conductivity and Reducing Friction  

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

Laboratory currently has several projects underway to develop advanced fluids, films, coatings, and Laboratory currently has several projects underway to develop advanced fluids, films, coatings, and processes to improve thermal conductivity and reduce friction. These measures are helping to increase energy efficiency for next-generation transportation applications. Superhard and Slick Coating (SSC) Opportunity: Friction, wear, and lubrication strongly affect the energy efficiency, durability, and environmental compatibility of

133

Thermal conductivity of a kinetic ising model  

Science Journals Connector (OSTI)

Using a novel extension of the microcanonical Monte Carlo algorithm, we have simulated the behavior of a two-dimensional nearest-neighbor ferromagnetic Ising model in the presence of a temperature gradient. The technique consists of setting the temperatures of boundary spins, while allowing "demons" associated with the other sites to control heat transfer. We demonstrate that our system is in local thermodynamic equilibrium, and compute the thermal conductivity as a function of temperature.

R. Harris and Martin Grant

1988-11-01T23:59:59.000Z

134

Transverse electric conductivity of quantum collisional plasmas  

E-Print Network (OSTI)

Formulas for calculation of transverse dielectric function and transverse electric conductivity in quantum collisional plasmas under arbitrary degree of degeneracy of the electron gas are received. The Wigner - Vlasov - Boltzmann kinetic equation with collision integral in BGK (Bhatnagar, Gross and Krook) form in coordinate space is used. Various special cases are investigated. The case of fully degenerate quantum plasma was considered separately. Comparison with Lindhard's formula has been realized.

A. V. Latyshev; A. A. Yushkanov

2010-07-06T23:59:59.000Z

135

Optoelectronic switches based on diffusive conduction Hilmi Volkan Demira  

E-Print Network (OSTI)

Optoelectronic switches based on diffusive conduction Hilmi Volkan Demira and Fatih Hakan Koklu the process of diffusive conduction that we use in our optoelectronic switches to achieve rapid optical. We demonstrate the feasibility of using such diffusive conductive optoelectronic switches

Miller, David A. B.

136

Proton conductivity of potassium doped barium zirconates  

SciTech Connect

Potassium doped barium zirconates have been synthesized by solid state reactions. It was found that the solubility limit of potassium on A-sites is between 5% and 10%. Introducing extra potassium leads to the formation of second phase or YSZ impurities. The water uptake of barium zirconates was increased even with 5% doping of potassium at the A-site. The sintering conditions and conductivity can be improved significantly by adding 1 wt% ZnO during material synthesis. The maximum solubility for yttrium at B-sites is around 15 at% after introducing 1 wt% zinc. The conductivity of Ba{sub 0.95}K{sub 0.05}Zr{sub 0.85}Y{sub 0.11}Zn{sub 0.04}O{sub 3-{delta}} at 600 deg. C is 2.2x10{sup -3} S/cm in wet 5% H{sub 2}. The activation energies for bulk and grain boundary are 0.29(2), 0.79(2) eV in wet 5% H{sub 2} and 0.31(1), 0.74(3) eV in dry 5% H{sub 2}. A power density of 7.7 mW/cm{sup 2} at 718 deg. C was observed when a 1 mm thick Ba{sub 0.95}K{sub 0.05}Zr{sub 0.85}Y{sub 0.11}Zn{sub 0.04}O{sub 3-{delta}} pellet was used as electrolyte and platinum electrodes. - Graphical abstract: Potassium doped barium zirconates have been synthesized by solid state reactions. It was found that the solubility limit of potassium on A-sites is between 5% and 10 %. The sintering conditions and conductivity can be improved significantly by adding 1 wt% ZnO during material synthesis. Five percent doping of potassium at A-site can double the total conductivity.

Xu Xiaoxiang [School of Chemistry, University of St. Andrews, Fife KY16 9ST (United Kingdom); Tao Shanwen, E-mail: s.tao@hw.ac.u [School of Chemistry, University of St. Andrews, Fife KY16 9ST (United Kingdom); Department of Chemistry, Heriot-Watt University, Edinburgh EH14 4AS (United Kingdom); Irvine, John T.S. [School of Chemistry, University of St. Andrews, Fife KY16 9ST (United Kingdom)

2010-01-15T23:59:59.000Z

137

Conductive ceramic composition and method of preparation  

DOE Patents (OSTI)

A ceramic anode composition is formed of a multivalent metal oxide or oxygenate such as an alkali metal, transition metal oxygenate. The anode is prepared as a non-stoichiometric crystalline structure by reaction and conditioning in a hydrogen gas cover containing minor proportions of carbon dioxide and water vapor. The structure exhibits a single phase and substantially enhanced electrical conductivity over that of the corresponding stoichiometric structure. Unexpectedly, such oxides and oxygenates are found to be stable in the reducing anode fuel gas of a molten carbonate fuel cell. 4 figures.

Smith, J.L.; Kucera, E.H.

1991-04-16T23:59:59.000Z

138

Continuous Processing of High Thermal Conductivity Fibers and...  

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

We are developing a continuous fabrication process for high thermal conductivity polyethylene (PE) films While high thermal conductivity in (PE) has been shown in isolated...

139

Federal Register Notice: Plan for Conduct of 2012 Electric Transmissio...  

Energy Savers (EERE)

Federal Register Notice: Plan for Conduct of 2012 Electric Transmission Congestion Study Federal Register Notice: Plan for Conduct of 2012 Electric Transmission Congestion Study...

140

Plan to Conduct Electric Transmission Congestion Study: Federal...  

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

Plan to Conduct Electric Transmission Congestion Study: Federal Register Volume 76, No. 218 - Nov. 10, 2011 Plan to Conduct Electric Transmission Congestion Study: Federal Register...

Note: This page contains sample records for the topic "ionic-electronic conductivity miec" 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

Multilayered YSZ/GZO films with greatly enhanced ionic conduction...  

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

YSZGZO films with greatly enhanced ionic conduction for low temperature solid oxide fuel cells. Multilayered YSZGZO films with greatly enhanced ionic conduction for...

142

A Discussion of Conductivity Testing in High Temperature Membranes...  

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

A Discussion of Conductivity Testing in High Temperature Membranes (lessons learned in assessing transport) A Discussion of Conductivity Testing in High Temperature Membranes...

143

CRAD, Conduct of Operations Assessment Plan | Department of Energy  

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

Conduct of Operations Assessment Plan CRAD, Conduct of Operations Assessment Plan Performance Objective: The purpose of this assessment is to verify programmatic implementation of...

144

Bureau of Land Management - Notice of Intent to Conduct Geothermal...  

Open Energy Info (EERE)

Conduct Geothermal Resource Exploration Operations Jump to: navigation, search OpenEI Reference LibraryAdd to library Form: Bureau of Land Management - Notice of Intent to Conduct...

145

Conduct of Operations - DOE Directives, Delegations, and Requirements  

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

O 422.1 Admin Chg 1, Conduct of Operations by Earl Hughes Functional areas: Administrative Change, Conduct of Operations, Property Management, Safety and Security This Order...

146

CRAD, Conduct of Operations - Office of River Protection K Basin...  

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

Conduct of Operations - Office of River Protection K Basin Sludge Waste System CRAD, Conduct of Operations - Office of River Protection K Basin Sludge Waste System May 2004 A...

147

Conduct of Operations - DOE Directives, Delegations, and Requirements  

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

O 422.1 Admin Chg 2, Conduct of Operations by Earl Hughes Functional areas: Administrative Change, Conduct of Operations, Safety, Security, Property Management This Order defines...

148

CRAD, Conduct of Operations - Los Alamos National Laboratory...  

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

Conduct of Operations - Los Alamos National Laboratory TA 55 SST Facility CRAD, Conduct of Operations - Los Alamos National Laboratory TA 55 SST Facility June 2005 A section of...

149

CRAD, Conduct of Operations - Oak Ridge National Laboratory TRU...  

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

Conduct of Operations - Oak Ridge National Laboratory TRU ALPHA LLWT Project CRAD, Conduct of Operations - Oak Ridge National Laboratory TRU ALPHA LLWT Project November 2003 A...

150

Flowing Electrical Conductivity At Jemez Pueblo Area (DOE GTP...  

Open Energy Info (EERE)

Flowing Electrical Conductivity At Jemez Pueblo Area (DOE GTP) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Flowing Electrical Conductivity At...

151

Commonwealth Aluminum: Manufacturer Conducts Plant-Wide Energy...  

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

Commonwealth Aluminum: Manufacturer Conducts Plant-Wide Energy Assessments at Two Aluminum Sheet Production Operations Commonwealth Aluminum: Manufacturer Conducts Plant-Wide...

152

Conductive Rigid Skeleton Supported Silicon as High-Performance...  

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

Conductive Rigid Skeleton Supported Silicon as High-Performance Li-Ion Battery Anodes. Conductive Rigid Skeleton Supported Silicon as High-Performance Li-Ion Battery Anodes....

153

Formed Core Sampler Hydraulic Conductivity Testing  

SciTech Connect

A full-scale formed core sampler was designed and functionally tested for use in the Saltstone Disposal Facility (SDF). Savannah River National Laboratory (SRNL) was requested to compare properties of the formed core samples and core drilled samples taken from adjacent areas in the full-scale sampler. While several physical properties were evaluated, the primary property of interest was hydraulic conductivity. Differences in hydraulic conductivity between the samples from the formed core sampler and those representing the bulk material were noted with respect to the initial handling and storage of the samples. Due to testing conditions, the site port samples were exposed to uncontrolled temperature and humidity conditions prior to testing whereas the formed core samples were kept in sealed containers with minimal exposure to an uncontrolled environment prior to testing. Based on the results of the testing, no significant differences in porosity or density were found between the formed core samples and those representing the bulk material in the test stand.

Miller, D. H.; Reigel, M. M.

2012-09-25T23:59:59.000Z

154

Sampling Artifacts from Conductive Silicone Tubing  

SciTech Connect

We report evidence that carbon impregnated conductive silicone tubing used in aerosol sampling systems can introduce two types of experimental artifacts: 1) silicon tubing dynamically absorbs carbon dioxide gas, requiring greater than 5 minutes to reach equilibrium and 2) silicone tubing emits organic contaminants containing siloxane that adsorb onto particles traveling through it and onto downstream quartz fiber filters. The consequence can be substantial for engine exhaust measurements as both artifacts directly impact calculations of particulate mass-based emission indices. The emission of contaminants from the silicone tubing can result in overestimation of organic particle mass concentrations based on real-time aerosol mass spectrometry and the off-line thermal analysis of quartz filters. The adsorption of siloxane contaminants can affect the surface properties of aerosol particles; we observed a marked reduction in the water-affinity of soot particles passed through conductive silicone tubing. These combined observations suggest that the silicone tubing artifacts may have wide consequence for the aerosol community and should, therefore, be used with caution. Gentle heating, physical and chemical properties of the particle carriers, exposure to solvents, and tubing age may influence siloxane uptake. The amount of contamination is expected to increase as the tubing surface area increases and as the particle surface area increases. The effect is observed at ambient temperature and enhanced by mild heating (<100 oC). Further evaluation is warranted.

Timko, Michael T.; Yu, Zhenhong; Kroll, Jesse; Jayne, John T.; Worsnop, Douglas R.; Miake-Lye, Richard C.; Onasch, Timothy B.; Liscinsky, David; Kirchstetter, Thomas W.; Destaillats, Hugo; Holder, Amara L.; Smith, Jared D.; Wilson, Kevin R.

2009-05-15T23:59:59.000Z

155

Oxygen ion-conducting dense ceramic  

DOE Patents (OSTI)

Preparation, structure, and properties of mixed metal oxide compositions containing at least strontium, cobalt, iron and oxygen are described. The crystalline mixed metal oxide compositions of this invention have, for example, structure represented by Sr.sub..alpha. (Fe.sub.1-x Co.sub.x).sub..alpha.+.beta. O.sub..delta. where x is a number in a range from 0.01 to about 1, .alpha. is a number in a range from about 1 to about 4, .beta. is a number in a range upward from 0 to about 20, and .delta. is a number which renders the compound charge neutral, and wherein the composition has a non-perovskite structure. Use of the mixed metal oxides in dense ceramic membranes which exhibit oxygen ionic conductivity and selective oxygen separation, are described as well as their use in separation of oxygen from an oxygen-containing gaseous mixture.

Balachandran, Uthamalingam (Hinsdale, IL); Kleefisch, Mark S. (Naperville, IL); Kobylinski, Thaddeus P. (Lisle, IL); Morissette, Sherry L. (Las Cruces, NM); Pei, Shiyou (Naperville, IL)

1997-01-01T23:59:59.000Z

156

Oxygen ion-conducting dense ceramic  

DOE Patents (OSTI)

Preparation, structure, and properties of mixed metal oxide compositions containing at least strontium, cobalt, iron and oxygen are described. The crystalline mixed metal oxide compositions of this invention have, for example, structure represented by Sr.sub..alpha. (Fe.sub.1-x Co.sub.x).sub..alpha.+.beta. O.sub..delta. where x is a number in a range from 0.01 to about 1, .alpha. is a number in a range from about 1 to about 4, .beta. is a number in a range upward from 0 to about 20, and .delta. is a number which renders the compound charge neutral, and wherein the composition has a non-perovskite structure. Use of the mixed metal oxides in dense ceramic membranes which exhibit oxygen ionic conductivity and selective oxygen separation, are described as well as their use in separation of oxygen from an oxygen-containing gaseous mixture.

Balachandran, Uthamalingam (Hinsdale, IL); Kleefisch, Mark S. (Naperville, IL); Kobylinski, Thaddeus P. (Lisle, IL); Morissette, Sherry L. (Las Cruces, NM); Pei, Shiyou (Naperville, IL)

1996-01-01T23:59:59.000Z

157

Ion-/proton-conducting apparatus and method  

DOE Patents (OSTI)

A c-axis-oriented HAP thin film synthesized by seeded growth on a palladium hydrogen membrane substrate. An exemplary synthetic process includes electrochemical seeding on the substrate, and secondary and tertiary hydrothermal treatments under conditions that favor growth along c-axes and a-axes in sequence. By adjusting corresponding synthetic conditions, an HAP this film can be grown to a controllable thickness with a dense coverage on the underlying substrate. The thin films have relatively high proton conductivity under hydrogen atmosphere and high temperature conditions. The c-axis oriented films may be integrated into fuel cells for application in the intermediate temperature range of 200-600.degree. C. The electrochemical-hydrothermal deposition technique may be applied to create other oriented crystal materials having optimized properties, useful for separations and catalysis as well as electronic and electrochemical applications, electrochemical membrane reactors, and in chemical sensors.

Yates, Matthew (Penfield, NY); Liu, Dongxia (Rochester, NY)

2011-05-17T23:59:59.000Z

158

Record simulations conducted on Lawrence Livermore supercomputer  

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

5 5 For immediate release: 03/19/2013 | NR-13-03-05 Record simulations conducted on Lawrence Livermore supercomputer Breanna Bishop, LLNL, (925) 423-9802, bishop33@llnl.gov Printer-friendly OSIRIS simulation on Sequoia of the interaction of a fast-ignition-scale laser with a dense DT plasma. The laser field is shown in green, the blue arrows illustrate the magnetic field lines at the plasma interface and the red/yellow spheres are the laser-accelerated electrons that will heat and ignite the fuel. High Resolution Image LIVERMORE, Calif. -- Researchers at Lawrence Livermore National Laboratory have performed record simulations using all 1,572,864 cores of Sequoia, the largest supercomputer in the world. Sequoia, based on IBM BlueGene/Q architecture, is the first machine to exceed one million computational

159

Frequency-dependent conductivity of electron glasses  

Science Journals Connector (OSTI)

Results of dc and frequency-dependent conductivity in the quantum limit—i.e., ??>kBT—for a broad range of dopant concentrations in nominally uncompensated, crystalline phosphorous-doped silicon and amorphous niobium-silicon alloys are reported. These materials fall under the general category of disordered insulating systems, which are referred to as electron glasses. Using microwave resonant cavities and quasioptical millimeter-wave spectroscopy we are able to study the frequency-dependent response on the insulating side of the metal-insulator transition. We identify a quantum critical regime, a Fermi glass regime, and a Coulomb glass regime. Our phenomenological results lead to a phase diagram description, or taxonomy, of the electrodynamic response of electron glass systems.

E. Helgren; N. P. Armitage; G. Grüner

2004-01-13T23:59:59.000Z

160

Document control and Conduct of Operations  

SciTech Connect

Department of Energy (DOE) Order 5480.19, Conduct of operations, places stringent requirements on a wide range of activities at DOE facilities. These requirements directly affect personnel at the Advanced Test Reactor (ATR), which is located in the Test Reactor Area of the Idaho National Engineering Laboratory and operated for DOE by EG G Idaho, Inc. In order for the ATR to comply with 5480.19, the very personality of the reactor facility's document control unit has had to undergo a major change. The Facility and Administrative Support Unit (FAS) is charged with nudntenance of ATR's controlled ddcuments-diousands of operating and administrative procedures. Prior to the imposition of 5480.19, FAS was content to operate in a clerical support mode, seldom questioning or seeking to improve. This numer of doing business is inappropriate within the framework of DOE 5480.19 and is also at odds with the approach to Total Quality Management (TQM) promulgated by EG G Idaho.To comply with the requirements of 5480.19, FAS has Actively applied TQM principles. Empowered personnel to unprove operations through the establishment of a teatn approach. Begun an automation process that is already paying large dividends in terms of improved procedure accuracy and compliance. A state-of-the-art text retrival system is already in place. We are vigorously pursuing fully automated document tmcidng and document management. This paper describes in detail the steps taken to date, the improvements and the lessons learned. It aLw discusses plans for the future that will enable FAS to support the ATR in inccreasing its responsiveness to the Conduct of Operations Order.

Collins, S.K.; Meltzer, F.L.

1993-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "ionic-electronic conductivity miec" 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

Measurement of thermal conductivity P t BPart B  

E-Print Network (OSTI)

wave Take the Fourier transform of this frequency domain solution #12;For a low thermal conductivity thin filmFor a low thermal conductivity thin film on a high thermal conductivity substrate (Factor of 2Measurement of thermal conductivity Part A: P t BPart B: · Time domain thermoreflectance #12

Braun, Paul

162

Materials and methods for autonomous restoration of electrical conductivity  

DOE Patents (OSTI)

An autonomic conductivity restoration system includes a solid conductor and a plurality of particles. The particles include a conductive fluid, a plurality of conductive microparticles, and/or a conductive material forming agent. The solid conductor has a first end, a second end, and a first conductivity between the first and second ends. When a crack forms between the first and second ends of the conductor, the contents of at least a portion of the particles are released into the crack. The cracked conductor and the released contents of the particles form a restored conductor having a second conductivity, which may be at least 90% of the first conductivity.

Blaiszik, Benjamin J; Odom, Susan A; Caruso, Mary M; Jackson, Aaron C; Baginska, Marta B; Ritchey, Joshua A; Finke, Aaron D; White, Scott R; Moore, Jeffrey S; Sottos, Nancy R; Braun, Paul V; Amine, Khalil

2014-03-25T23:59:59.000Z

163

Persistent ion beam induced conductivity in zinc oxide nanowires  

SciTech Connect

We report persistently increased conduction in ZnO nanowires irradiated by ion beam with various ion energies and species. This effect is shown to be related to the already known persistent photo conduction in ZnO and dubbed persistent ion beam induced conduction. Both effects show similar excitation efficiency, decay rates, and chemical sensitivity. Persistent ion beam induced conduction will potentially allow countable (i.e., single dopant) implantation in ZnO nanostructures and other materials showing persistent photo conduction.

Johannes, Andreas; Niepelt, Raphael; Gnauck, Martin; Ronning, Carsten [Institute of Solid State Physics, Friedrich-Schiller-University Jena, Max-Wien-Platz 1, 07743 Jena (Germany)

2011-12-19T23:59:59.000Z

164

Investigation of the effect of gel residue on hydraulic fracture conductivity using dynamic fracture conductivity test  

E-Print Network (OSTI)

The key to producing gas from tight gas reservoirs is to create a long, highly conductive flow path, via the placement of a hydraulic fracture, to stimulate flow from the reservoir to the wellbore. Viscous fluid is used to transport proppant...

Marpaung, Fivman

2009-05-15T23:59:59.000Z

165

Effect of Counter Ion Placement on Conductivity in Single-Ion Conducting Block Copolymer Electrolytes  

E-Print Network (OSTI)

Electrolytes Sang-Woog Ryu, Patrick E. Trapa,* Solar C. Olugebefola, Juan A. Gonzalez-Leon, Donald R. Sadoway,* and Anne M. Mayes*,z Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139-4307, USA Single-ion conducting block copolymer electrolytes were prepared

Sadoway, Donald Robert

166

Ion/proton-conducting apparatus and method  

DOE Patents (OSTI)

A c-axis-oriented HAP thin film synthesized by seeded growth on a palladium hydrogen membrane substrate. An exemplary synthetic process includes electrochemical seeding on the substrate, and secondary and tertiary hydrothermal treatments under conditions that favor growth along c-axes and a-axes in sequence. By adjusting corresponding synthetic conditions, an HAP this film can be grown to a controllable thickness with a dense coverage on the underlying substrate. The thin films have relatively high proton conductivity under hydrogen atmosphere and high temperature conditions. The c-axis oriented films may be integrated into fuel cells for application in the intermediate temperature range of 200-600.degree. C. The electrochemical-hydrothermal deposition technique may be applied to create other oriented crystal materials having optimized properties, useful for separations and catalysis as well as electronic and electrochemical applications, electrochemical membrane reactors, and in chemical sensors. Additional high-density and gas-tight HAP film compositions may be deposited using a two-step deposition method that includes an electrochemical deposition method followed by a hydrothermal deposition method. The two-step method uses a single hydrothermal deposition solution composition. The method may be used to deposit HAP films including but not limited to at least doped HAP films, and more particularly including carbonated HAP films. In addition, the high-density and gas-tight HAP films may be used in proton exchange membrane fuel cells.

Yates, Matthew; Xue, Wei

2014-12-23T23:59:59.000Z

167

CRAD, Conduct of Operations Assessment Plan | Department of Energy  

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

Conduct of Operations Assessment Plan Conduct of Operations Assessment Plan CRAD, Conduct of Operations Assessment Plan Performance Objective: The purpose of this assessment is to verify programmatic implementation of DOE O 5480.19, "Conduct of Operations Requirements of DOE Facilities" Criteria: Operations at DOE facilities shall be conducted in a manner to assure an acceptable level of safety. (DOE O 5408.19 Conduct of Operations for DOE Facilities) Operators at facilities shall have procedures in place to control the conduct of their operations. (DOE O 5408.19 Conduct of Operations for DOE Facilities) Line organizations shall review existing and planed programs important to safe and reliable facility operations. (DOE O 5408.19 Conduct of Operations for DOE Facilities) Line organizations shall assess the effectiveness of corporate

168

Hydraulic Conductivity of the Monticello Permeable Reactive Barrier  

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

Hydraulic Conductivity of the Monticello Permeable Reactive Barrier Hydraulic Conductivity of the Monticello Permeable Reactive Barrier November 2005 Update Hydraulic Conductivity of the Monticello Permeable Reactive Barrier November 2005 Update Hydraulic Conductivity of the Monticello Permeable Reactive Barrier November 2005 Update Hydraulic Conductivity of the Monticello Permeable Reactive Barrier November 2005 Update More Documents & Publications Variation in Hydraulic Conductivity Over Time at the Monticello Permeable Reactive Barrier Performance Assessment and Recommendations for Rejuvenation of a Permeable Reactive Barrier: Cotter Corporation's Cañon City, Colorado, Uranium Mill Performance Assessment and Recommendations for Rejuvenation of a Permeable Reactive Barrier: Cotter Corporation's Cañon City, Colorado, Uranium

169

Hydraulic Conductivity of the Monticello Permeable Reactive Barrier  

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

Hydraulic Conductivity of the Monticello Permeable Reactive Barrier Hydraulic Conductivity of the Monticello Permeable Reactive Barrier November 2005 Update Hydraulic Conductivity of the Monticello Permeable Reactive Barrier November 2005 Update Hydraulic Conductivity of the Monticello Permeable Reactive Barrier November 2005 Update Hydraulic Conductivity of the Monticello Permeable Reactive Barrier November 2005 Update More Documents & Publications Variation in Hydraulic Conductivity Over Time at the Monticello Permeable Reactive Barrier Ground-Water Table and Chemical Changes in an Alluvial Aquifer During Sustained Pumping at the Monticello, Utah, Zero-Valent Iron Treatment Cells Performance Assessment and Recommendations for Rejuvenation of a Permeable Reactive Barrier: Cotter Corporation's Cañon City, Colorado, Uranium

170

Laboratory-scale fracture conductivity created by acid etching  

E-Print Network (OSTI)

Success of acid fracturing treatment depends greatly on the created conductivity under closure stress. In order to have sufficient conductivity, the fracture face must be non-uniformly etched while the fracture strength maintained to withstand...

Pournik, Maysam

2009-05-15T23:59:59.000Z

171

Tailoring the Thermoelectric Behavior of Electrically Conductive Polymer Composites  

E-Print Network (OSTI)

fabrication temperatures. These concerns have led research efforts into electrically conductive polymer composites prepared in ambient conditions from aqueous solutions. By combining polymer latex with carbon nanotubes (CNT), electrical conductivity can...

Moriarty, Gregory P.

2013-05-21T23:59:59.000Z

172

NO.sub.x sensing devices having conductive oxide electrodes  

DOE Patents (OSTI)

A NO.sub.x sensing device includes at least one pair of spaced electrodes, at least one of which is made of a conductive oxide, and an oxygen-ion conducting material in bridging electrical communication with the electrodes.

Montgomery, Frederick C. (Oak Ridge, TN); West, David L. (Oak Ridge, TN); Armstrong, Timothy R. (Clinton, TN); Maxey, Lonnie C. (Powell, TN)

2010-03-16T23:59:59.000Z

173

Code of Conduct for Safeguarding Good Academic Practice and  

E-Print Network (OSTI)

1 Code of Conduct for Safeguarding Good Academic Practice and Procedures in Cases of Academic Misconduct Effective from 20 December 2013 This Code of Conduct is based on the Memorandum for Safeguarding

Heiz, Ulrich

174

Residence Hall Handbook Policies, Regulations, and Standards of Conduct  

E-Print Network (OSTI)

, educational community does not tolerate physical or psychological threats, harassment, intimidation1 Residence Hall Handbook Policies, Regulations, and Standards of Conduct Updated August 20, 2012 community member who works, lives, studies, teaches, does research, conducts business or is involved

Stowell, Michael

175

Residence Hall Handbook Policies, Regulations, and Standards of Conduct  

E-Print Network (OSTI)

, educational community does not tolerate physical or psychological threats, harassment, intimidation1 Residence Hall Handbook Policies, Regulations, and Standards of Conduct As members community member who works, lives, studies, teaches, does research, conducts business or is involved

Vasilyev, Oleg V.

176

Imparting Electrical Conductivity into Asphalt Composites Using Graphite  

E-Print Network (OSTI)

Electrically conductive asphalt composites have immense potential for various multifunctional applications such as self-healing, self-sensing, snow and ice removal, and energy harvesting, and controlling asphalt conductivity is the first step...

Baranikumar, Aishwarya

2013-07-09T23:59:59.000Z

177

Structure, Magnetism and Conductivity in Epitaxial Ti-doped ...  

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

Magnetism and Conductivity in Epitaxial Ti-doped -Fe2O3 Hematite: Experiment and density functional theory Structure, Magnetism and Conductivity in Epitaxial Ti-doped -Fe2O3...

178

Strain-controlled thermal conductivity in ferroic twinned films  

E-Print Network (OSTI)

Large reversible changes of thermal conductivity are induced by mechanical stress, and the corresponding device is a key element for phononics applications. We show that the thermal conductivity ? of ferroic twinned thin ...

Li, Suzhi

179

Conductivity of Oriented Samaria-Doped Ceria Thin Films Grown...  

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

Conductivity of Oriented Samaria-Doped Ceria Thin Films Grown by Oxygen-plasma-assisted Molecular Beam Epitaxy. Conductivity of Oriented Samaria-Doped Ceria Thin Films Grown by...

180

MATHEMATICAL ANALYSIS OF CONDUCTING AND SUPERCONDUCTING TRANSMISSION LINES  

E-Print Network (OSTI)

MATHEMATICAL ANALYSIS OF CONDUCTING AND SUPERCONDUCTING TRANSMISSION LINES ANNE-SOPHIE BONNET propagation in the microstrip transmission lines used in microelectronics. In the first part, the case of the perfectly conducting strip. Key words. superconducting transmission lines, waveguides, spectral analysis

Ramdani, Karim - Institut de Mathématiques �lie Cartan, Université Henri Poincaré

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


181

Molecular Dynamic Study of Thermal Conductivity of Amorphous Nanoporous Silica  

E-Print Network (OSTI)

as a thermal isolation layer”. Ceramics International, 34(Thermal conductivity of highly porous zirconia”. Journal of the European Ceramic

Coquil, Thomas; Fang, Jin; Pilon, Laurent

2011-01-01T23:59:59.000Z

182

PROCEDURE FOR CONDUCTING A RECORDS INVENTORY | Department of...  

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

FOR CONDUCTING A RECORDS INVENTORY More Documents & Publications Records Management Handbook Records Management Handbook Information and Records Management Transition Guidance...

183

CRAD, Conduct of Operations - Los Alamos National Laboratory...  

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

National Laboratory Waste Characterization, Reduction, and Repackaging Facility CRAD, Conduct of Operations - Los Alamos National Laboratory Waste Characterization, Reduction,...

184

In-Plane Conductivity Testing Procedures and Results  

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

This presentation on conductivity testing was given at the High Temperature Membrane Working Group Meeting in May 2007.

185

ORISE: REAC/TS Cytogenetic Biodosimetry Laboratory conducts internatio...  

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

Cytogenetic Biodosimetry Laboratory conducts international exercise to assess radiation dose estimation Cytogenetics biodosimetry dicentric analysis ORISE and the Radiation...

186

Ultralow Thermal Conductivity of Isotope-Doped Silicon Nanowires  

E-Print Network (OSTI)

conductivity of SiNWs is about 2 orders of magnitude smaller than that of bulk crystals.18,19 The low thermal conductivity (0.05 W/m K) found in layered materials.22 So it is indispensable to reduce the thermal conUltralow Thermal Conductivity of Isotope-Doped Silicon Nanowires Nuo Yang, Gang Zhang,*, and Baowen

Li, Baowen

187

Monte Carlo Simulations of Thermal Conductivity in Nanoporous Si Membranes  

E-Print Network (OSTI)

candidates for thermoelectric materials as they can provide extremely low thermal conductivity , relatively of boundary scattering on the thermal conductivity. We show that the material porosity strongly affects1 Monte Carlo Simulations of Thermal Conductivity in Nanoporous Si Membranes Stefanie Wolf1

188

Pushing the boundaries of the thermal conductivity of materials  

E-Print Network (OSTI)

Pushing the boundaries of the thermal conductivity of materials David G. Cahill, C. Chiritescu, Y. · Advances in time-domain thermoreflectance. · Amorphous limit to the thermal conductivity of materials. #12;50 nm Interfaces are critical at the nanoscale · Low thermal conductivity in nanostructured

Braun, Paul

189

Thermal Conductivity of High-Modulus Polymer Fibers Xiaojia Wang,*,  

E-Print Network (OSTI)

to be the dominate carriers of heat. 1. INTRODUCTION Polymeric materials typically have a low thermal conductivity transfer is critical are often limited by low thermal conductivity. Here, we leverage the enormous research and low-density PE with varying fiber volume fractions.11 They reported an axial thermal conductivity

Cahill, David G.

190

CONDUCTION HEAT TRANSFER Dr. Ruhul Amin Fall 2011  

E-Print Network (OSTI)

ME 525 CONDUCTION HEAT TRANSFER Dr. Ruhul Amin Fall 2011 Office: 201C Roberts Hall Lecture Room of conduction heat transfer. Important results which are useful for engineering application will also: 121 Roberts Hall Phone: 994-6295 Lecture Periods: 12:45- 2:00, TR TEXT: Heat Conduction, M. N. Ozisik

Dyer, Bill

191

STANDARDS OF CONDUCT A MESSAGE FROM THE CHANCELLOR  

E-Print Network (OSTI)

STANDARDS OF CONDUCT A MESSAGE FROM THE CHANCELLOR Dear Faculty and Staff: At Vanderbilt University standards and lawful conduct. The Vanderbilt University Compliance Program articulates specifically what is expected of us, and completing the Standards of Conduct training will ensure that you have a thorough

Bordenstein, Seth

192

Single-Molecule Circuits with Well-Defined Molecular Conductance  

E-Print Network (OSTI)

Single-Molecule Circuits with Well-Defined Molecular Conductance Latha Venkataraman,*,,| Jennifer E conductance measurements of single molecules. For an alkane diamine series with 2-8 carbon atoms leads to well-defined conductance measurements of a single molecule junction in a statistical study

Hone, James

193

Thermopower and conductivity activation energies in hydrogenated amorphous silicon  

SciTech Connect

The long range fluctuation model has been widely used to account for the difference in activation energies seen experimentally in dark conductivity and thermopower measurements in hydrogenated amorphous silicon. The authors report on a test of this model using measurements of the conductivity and thermoelectric effects carried out in both open and short circuit configurations. While the thermopower activation energy is less than that of the dark conductivity, the short circuit Seebeck conductivity is found to be nearly identical to the dark conductivity in both activation energy and magnitude, consistent with the long range fluctuation model.

Dyalsingh, H.M.; Kakalios, J. [Univ. of Minnesota, Minneapolis, MN (United States). School of Physics and Astronomy

1996-12-31T23:59:59.000Z

194

Heat conduction through a trapped solid: effect of structural changes on thermal conductance  

E-Print Network (OSTI)

We study the conduction of heat across a narrow solid strip trapped by an external potential and in contact with its own liquid. Structural changes, consisting of addition and deletion of crystal layers in the trapped solid, are produced by altering the depth of the confining potential. Nonequilibrium molecular dynamics simulations and, wherever possible, simple analytical calculations are used to obtain the thermal resistance in the liquid, solid and interfacial regions (Kapitza or contact resistance). We show that these layering transitions are accompanied by sharp jumps in the contact thermal resistance. Dislocations, if present, are shown to increase the thermal resistance of the strip drastically.

Debasish Chaudhuri; Abhishek Chaudhuri; Surajit Sengupta

2006-11-14T23:59:59.000Z

195

LM Conducts Groundwater and Soil Investigation at Riverton, Wyoming, in  

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

Conducts Groundwater and Soil Investigation at Riverton, Conducts Groundwater and Soil Investigation at Riverton, Wyoming, in Response to 2010 Flood LM Conducts Groundwater and Soil Investigation at Riverton, Wyoming, in Response to 2010 Flood October 16, 2012 - 10:50am Addthis LM Conducts Groundwater and Soil Investigation at Riverton, Wyoming, in Response to 2010 Flood LM Conducts Groundwater and Soil Investigation at Riverton, Wyoming, in Response to 2010 Flood LM Conducts Groundwater and Soil Investigation at Riverton, Wyoming, in Response to 2010 Flood LM Conducts Groundwater and Soil Investigation at Riverton, Wyoming, in Response to 2010 Flood What does this project do? Goal 1. Protect human health and the environment A team representing two Federal agencies-U.S. Department of Energy (DOE) Office of Legacy Management and U.S. Geological Survey-is evaluating

196

Final Report: Thermal Conductance of Solid-Liquid Interfaces  

SciTech Connect

Research supported by this grant has significantly advanced fundamental understanding of the thermal conductance of solid-liquid interfaces, and the thermal conductivity of nanofluids and nanoscale composite materials. • The thermal conductance of interfaces between carbon nanotubes and a surrounding matrix of organic molecules is exceptionally small and this small value of the interface conductance limits the enhancement in thermal conductivity that can be achieved by loading a fluid or a polymer with nanotubes. • The thermal conductance of interfaces between metal nanoparticles coated with hydrophilic surfactants and water is relatively high and surprisingly independent of the details of the chemical structure of the surfactant. • We extended our experimental methods to enable studies of planar interfaces between surfactant-coated metals and water where the chemical functionalization can be varied between strongly hydrophobic and strongly hydrophilic. The thermal conductance of hydrophobic interfaces establishes an upper-limit of 0.25 nm on the thickness of the vapor-layer that is often proposed to exist at hydrophobic interfaces. • Our high-precision measurements of fluid suspensions show that the thermal conductivity of fluids is not significantly enhanced by loading with a small volume fraction of spherical nanoparticles. These experimental results directly contradict some of the anomalous results in the recent literature and also rule-out proposed mechanisms for the enhanced thermal conductivity of nanofluids that are based on modification of the fluid thermal conductivity by the coupling of fluid motion and the Brownian motion of the nanoparticles.

Cahil, David, G.; Braun, Paul, V.

2006-05-31T23:59:59.000Z

197

Building Technologies Office: Shape-Stable and Highly Conductive  

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

Shape-Stable and Highly Shape-Stable and Highly Conductive Nano-Phase-Change Materials Research Project to someone by E-mail Share Building Technologies Office: Shape-Stable and Highly Conductive Nano-Phase-Change Materials Research Project on Facebook Tweet about Building Technologies Office: Shape-Stable and Highly Conductive Nano-Phase-Change Materials Research Project on Twitter Bookmark Building Technologies Office: Shape-Stable and Highly Conductive Nano-Phase-Change Materials Research Project on Google Bookmark Building Technologies Office: Shape-Stable and Highly Conductive Nano-Phase-Change Materials Research Project on Delicious Rank Building Technologies Office: Shape-Stable and Highly Conductive Nano-Phase-Change Materials Research Project on Digg Find More places to share Building Technologies Office: Shape-Stable

198

Micro-Conductivity Imager Logging Tool | Open Energy Information  

Open Energy Info (EERE)

Micro-Conductivity Imager Logging Tool Micro-Conductivity Imager Logging Tool Jump to: navigation, search OpenEI Reference LibraryAdd to library Web Site: Micro-Conductivity Imager Logging Tool Author Hemisphere Technologies Published Publisher Not Provided, 2011 DOI Not Provided Check for DOI availability: http://crossref.org Online Internet link for Micro-Conductivity Imager Logging Tool Citation Hemisphere Technologies. Micro-Conductivity Imager Logging Tool [Internet]. 2011. [cited 2013/10/09]. Available from: http://www.hemisphereoil.com/mcit.html Retrieved from "http://en.openei.org/w/index.php?title=Micro-Conductivity_Imager_Logging_Tool&oldid=687995" Categories: References Geothermal References Uncited References What links here Related changes Special pages Printable version Permanent link

199

LANL Conducts Watusi Experiment | National Nuclear Security Administration  

National Nuclear Security Administration (NNSA)

Conducts Watusi Experiment | National Nuclear Security Administration Conducts Watusi Experiment | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Continuing Management Reform Countering Nuclear Terrorism About Us Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations Media Room Congressional Testimony Fact Sheets Newsletters Press Releases Speeches Events Social Media Video Gallery Photo Gallery NNSA Archive Federal Employment Apply for Our Jobs Our Jobs Working at NNSA Blog Home > About Us > Our History > NNSA Timeline > LANL Conducts Watusi Experiment LANL Conducts Watusi Experiment September 28, 2002 Nevada Test Site, NV LANL Conducts Watusi Experiment The Los Alamos National Laboratory conducts Watusi, a spectacular

200

Using electrical impedance tomography to map subsurface hydraulic conductivity  

DOE Patents (OSTI)

The use of Electrical Impedance Tomography (EIT) to map subsurface hydraulic conductivity. EIT can be used to map hydraulic conductivity in the subsurface where measurements of both amplitude and phase are made. Hydraulic conductivity depends on at least two parameters: porosity and a length scale parameter. Electrical Resistance Tomography (ERT) measures and maps electrical conductivity (which can be related to porosity) in three dimensions. By introducing phase measurements along with amplitude, the desired additional measurement of a pertinent length scale can be achieved. Hydraulic conductivity controls the ability to flush unwanted fluid contaminants from the surface. Thus inexpensive maps of hydraulic conductivity would improve planning strategies for subsequent remediation efforts. Fluid permeability is also of importance for oil field exploitation and thus detailed knowledge of fluid permeability distribution in three-dimension (3-D) would be a great boon to petroleum reservoir analysts.

Berryman, James G. (Danville, CA); Daily, William D. (Livermore, CA); Ramirez, Abelardo L. (Pleasanton, CA); Roberts, Jeffery J. (Livermore, CA)

2000-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "ionic-electronic conductivity miec" 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

Thermal conductivity of graphene nanoribbons in noble gaseous environments  

SciTech Connect

We investigate the thermal conductivity of suspended graphene nanoribbons in noble gaseous environments using molecular dynamics simulations. It is reported that the thermal conductivity of perfect graphene nanoribbons decreases with the gaseous pressure. The decreasing is more obvious for the noble gas with large atomic number. However, the gaseous pressure cannot change the thermal conductivity of defective graphene nanoribbons apparently. The phonon spectra of graphene nanoribbons are also provided to give corresponding supports.

Zhong, Wei-Rong, E-mail: wrzhong@hotmail.com; Xu, Zhi-Cheng; Zheng, Dong-Qin [Department of Physics and Siyuan Laboratory, College of Science and Engineering, Jinan University, Guangzhou 510632 (China); Ai, Bao-Quan, E-mail: aibq@scnu.edu.cn [Laboratory of Quantum Information Technology, ICMP and SPTE, South China Normal University, Guangzhou 510006 (China)

2014-02-24T23:59:59.000Z

202

NNSA Conducts Two Emergency Response Training Courses in Armenia | National  

National Nuclear Security Administration (NNSA)

Conducts Two Emergency Response Training Courses in Armenia | National Conducts Two Emergency Response Training Courses in Armenia | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Continuing Management Reform Countering Nuclear Terrorism About Us Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations Media Room Congressional Testimony Fact Sheets Newsletters Press Releases Speeches Events Social Media Video Gallery Photo Gallery NNSA Archive Federal Employment Apply for Our Jobs Our Jobs Working at NNSA Blog Home > Media Room > Press Releases > NNSA Conducts Two Emergency Response Training Courses ... Press Release NNSA Conducts Two Emergency Response Training Courses in Armenia

203

Draft Voluntary Code of Conduct Available for Public Comment...  

Energy Savers (EERE)

comment on DOE's draft Voluntary Code of Conduct which addresses data privacy surrounding smart grid technologies. Comments must be received on or before October 14, 2014. In...

204

Software optimization for electrical conductivity imaging in polycrystalline diamond cutters  

SciTech Connect

We previously reported on an electrical conductivity imaging instrument developed for measurements on polycrystalline diamond cutters. These cylindrical cutters for oil and gas drilling feature a thick polycrystalline diamond layer on a tungsten carbide substrate. The instrument uses electrical impedance tomography to profile the conductivity in the diamond table. Conductivity images must be acquired quickly, on the order of 5 sec per cutter, to be useful in the manufacturing process. This paper reports on successful efforts to optimize the conductivity reconstruction routine, porting major portions of it to NVIDIA GPUs, including a custom CUDA kernel for Jacobian computation.

Bogdanov, G.; Ludwig, R. [Department of Electrical and Computer Engineering, Worcester Polytechnic Institute, 100 Institute Rd, Worcester, MA 01609 (United States); Wiggins, J.; Bertagnolli, K. [US Synthetic, 1260 South 1600 West, Orem, UT 84058 (United States)

2014-02-18T23:59:59.000Z

205

Graphene metamaterials based tunable terahertz absorber: effective surface conductivity approach  

Science Journals Connector (OSTI)

In this paper we present the efficient design of functional thin-film metamaterial devices with the effective surface conductivity approach. As an example, we demonstrate a graphene...

Andryieuski, Andrei; Lavrinenko, Andrei V

2013-01-01T23:59:59.000Z

206

Continuous Processing of High Thermal Conductivity Polyethylene Fibers and Sheets  

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

Project to develop and validate a continuous manufacturing process for polyethylene fibers and sheets yielding a thermal conductivity value greater than 60 W/m.K.

207

Glass-like thermal conductivity in high efficiency thermoelectric materials  

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

Discusses strategies to design thermoelectric materials with extremely low lattice thermal conductivity through modifications of the phonon band structure and phonon relaxation time.

208

Improved Electrical Conductivity of Graphene Films Integrated with Metal Nanowires  

E-Print Network (OSTI)

tin oxide films in electrochromic (EC) devices. The successful integration of such graphene/NW films. KEYWORDS: Graphene, nanowires, transparent conductive films, electrochromic devices Due to low electron

209

In Plane Conductivity Testing, BekkTech LLC  

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

In Plane Conductivity Testing Meeting ACS San Francisco 9-14-2006 Presented by Tim Bekkedahl High Temperature Membrane Working Group Subcontractor to FSECUCF DOE Award No....

210

The synthesis and characterization of porous, conductive, and ordered materials  

E-Print Network (OSTI)

Two different classes of polymers were pursued as candidates for materials possessing porosity, conductivity, and crystalline order. Attempts were made with hexaazatrinaphthylene- and dibenzotetrathiafulvalene-based ...

Narayan, Tarun Chandru

2013-01-01T23:59:59.000Z

211

NNSA, Sultanate of Oman Conduct WMD Terrorism-Related Commodities...  

National Nuclear Security Administration (NNSA)

Sultanate of Oman Conduct WMD Terrorism-Related Commodities Workshop and Counterterrorism Tabletop Exercise | National Nuclear Security Administration Facebook Twitter Youtube...

212

Conducting and Using Energy Efficiency Studies for States Presentation  

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

This presentation, given through the DOE's Technical Assitance Program (TAP), provides information on how to effectively conduct and use Energy Efficiency Studies for States.

213

CRAD, Conduct of Operations - Oak Ridge National Laboratory High...  

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

Oak Ridge National Laboratory High Flux Isotope Reactor Contractor ORR CRAD, Conduct of Operations - Oak Ridge National Laboratory High Flux Isotope Reactor Contractor ORR February...

214

NNSA to conduct Aerial Radiation Assessment Survey over Phoenix...  

National Nuclear Security Administration (NNSA)

conduct Aerial Radiation Assessment Survey over Phoenix, Scottsdale, Glendale, Tempe Areas | National Nuclear Security Administration Facebook Twitter Youtube Flickr RSS People...

215

Los Alamos conducts important hydrodynamic experiment in Nevada  

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

the experiment, conducted at NNSS's U1a underground complex in collaboration with NSTec and supported by Sandia National Laboratories, Los Alamos scientists and technicians...

216

First Subcritical Experiment Conducted at Nevada Test Site |...  

National Nuclear Security Administration (NNSA)

Subcritical Experiment Conducted at Nevada Test Site | National Nuclear Security Administration People Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear...

217

Los Alamos probes mysteries of uranium dioxide's thermal conductivity  

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

of nuclear materials into the hands of terrorists and other non-state actors. The depleted uranium dioxide crystals used for the thermal conductivity measurements were...

218

Cation Defects and Conductivity in Transparent Oxides. | EMSL  

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

In this paper, we identify key parameters that promote conductivity in mixed metal spinel oxides and compare their behavior with that of the free carrier TCO’s....

219

Chemical anchoring of organic conducting polymers to semiconducting surfaces  

DOE Patents (OSTI)

According to the present invention, an improved method of coating electrodes with conductive polymer films and/or preselected catalysts is provided. The charge-conductive polymer is covalently or coordinatively attached to the electrode surface to strengthen the adhesion characteristics of the polymer to the electrode surface or to improve charge-conductive properties between the conductive polymer and the electrode surface. Covalent or coordinative attachment is achieved by a number of alternative methods including covalently or coordinatively attaching the desired monomer to the electrode by means of a suitable coupling reagent and, thereafter, electrochemically polymerizing the monomer in situ.

Frank, Arthur J. (Lakewood, CO); Honda, Kenji (Wheatridge, CO)

1984-01-01T23:59:59.000Z

220

Chemical anchoring of organic conducting polymers to semiconducting surfaces  

DOE Patents (OSTI)

According to the present invention, an improved method of coating electrodes with conductive polymer films and/or preselected catalysts is provided. The charge conductive polymer is covalently or coordinatively attached to the electrode surface to strengthen the adhesion characteristics of the polymer to the electrode surface or to improve charge conductive properties between the conductive polymer and the electrode surface. Covalent or coordinative attachment is achieved by a number of alternative methods including covalently or coordinatively attaching the desired monomer to the electrode by means of a suitable coupling reagent and, thereafter, electrochemically polymerizing the monomer in situ.

Frank, A.J.; Honda, K.

1984-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "ionic-electronic conductivity miec" 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

Electromagnetic wave scattering by small perfectly conducting particles and applications  

E-Print Network (OSTI)

A formula for the electromagnetic (EM) field in the medium, in which many small perfectly conducting particles of an arbitrary shape are distributed, is derived.

Alexander G. Ramm

2014-02-13T23:59:59.000Z

222

Electromagnetic wave scattering by many conducting small particles  

E-Print Network (OSTI)

A rigorous theory of electromagnetic (EM) wave scattering by small perfectly conducting particles is developed. The limiting case when the number of particles tends to infinity is discussed.

A. G. Ramm

2008-04-21T23:59:59.000Z

223

Monitoring of temperature-compensated conductivity in fossil power plants  

SciTech Connect

Specific conductivity is an inexpensive, reliable, on-line method for monitoring the overall level of contaminants and its trends in fossil plant cycles. The most important applications are the monitoring in makeup water and at the economizer inlet. In the makeup, the specific conductivity is related to the content of makeup ionic impurities and carbon dioxide. Specific conductivity at the economizer inlet is an indication of the ammonia level during normal operation, since other ionic impurity levels are relatively very low in relation to the ammonia content. Cation conductivity serves as an excellent diagnostic tool. The advantage of using strong-acid cation exchanger for the alkalizing agents elimination and for the great sensitivity improvement has already been recognized in the 1950`s. The cation conductivity is currently one of the most important {open_quotes}core parameters{close_quotes} in the Cycle Chemistry Improvement Project. In this project, the most important plant cycle locations where cation conductivity on-line monitoring is strongly advised are: condensate pump discharge; polisher outlet or economizer inlet; and hot reheat steam or main steam. An additional monitoring location is the blowdown or the downcomer of drum boilers. The cation conductivity monitoring at this location is becoming vital with the introduction of oxygenated chemistry and OH (sodium hydroxide) treatment in cycles with drum boilers. Degassed cation conductivity has been addressed. Applying this method, the effect of carbon dioxide on cation conductivity is eliminated by boiling off gaseous carbon dioxide before the actual cation conductivity monitoring. Therefore, the degassed cation conductivity reflects only the total non-volatile anionic impurity level.

Bursik, A. [Grosskraftwerk Mannheim AG (Germany)

1995-01-01T23:59:59.000Z

224

NANO REVIEW Open Access Thermal conductivity and thermal boundary  

E-Print Network (OSTI)

NANO REVIEW Open Access Thermal conductivity and thermal boundary resistance of nanostructures and the thermal transport prop- erties is a key point to design materials with preferred thermal properties with the heat dissipation on them. The influence of the interfacial roughness on the thermal conductivity

Boyer, Edmond

225

Electrical Conductivity in the Precambrian Lithosphere of Western Canada  

Science Journals Connector (OSTI)

...8) to represent euxinic shales, originally deposited in a Proterozoic...dependence up to 40 MPa but are anisotropic, and hence the conductivity...8) to represent euxinic shales, originally deposited...dependence up to 40-MPa but are anisotropic, and hence the conductivity...

D. E. Boerner; R. D. Kurtz; J. A. Craven; G. M. Ross; F. W. Jones; W. J. Davis

1999-01-29T23:59:59.000Z

226

Oak Ridge National Laboratory's Values in the Conduct of  

E-Print Network (OSTI)

#12;Oak Ridge National Laboratory's Values in the Conduct of Research and Development Prepared RIDGE NATIONAL LABORATORY Oak Ridge, Tennessee 37831-6285 operated by LOCKHEED MARTIN ENERGY RESEARCH in the Conduct of Research and Development Introduction No quality of the Oak Ridge National Laboratory (ORNL

227

Morphology and thermal conductivity of yttria-stabilized zirconia coatings  

E-Print Network (OSTI)

yttria-stabilized zir- conia (YSZ) is then applied to provide thermal insulation [1]. This ceramic layer]. The thermal conductivity of the ceramic layer has been found to depend on the pore morphology within a coatingMorphology and thermal conductivity of yttria-stabilized zirconia coatings Hengbei Zhao a

Wadley, Haydn

228

October 2011 SDI FEP Issues Heat Conduction Issues (HC)  

E-Print Network (OSTI)

the heaters. Background: Halite thermal conductivity (k) is inversely related to porosity. The higher porosity additional information on the higher temperature-lower thermally conductive nature of halite and its affect on distal temperatures. Background: Halite thermal k is inversely related to temperature. A higher

229

Photo- and Semi-conductance in Molecular Single Crystals  

Science Journals Connector (OSTI)

... (1) Photo-conductance1 in molecular single crystals of the anthracene type is not an effect due primarily ... anthracene type is not an effect due primarily to impurity centres, since the dependence of photo-conductance on wave-length reproduces all inflexions of the ultra-violet absorption curve of the ...

D. J. CARSWELL; J. FERGUSON; L. E. LYONS

1954-04-17T23:59:59.000Z

230

Nonequilibrium Molecular Dynamics Simulation of Electric Conduction Tatsuro YUGE  

E-Print Network (OSTI)

that the system reaches a nonequilibrium steady state in the presence of an external electric field. The electrical conductivity is almost independent of the impurity distribution and the system size-Jones systems, exhibit the Fourier- type heat conduction in three dimensions, although anom- alous behaviors

Shimizu, Akira

231

Student Conduct Code Procedure: Rochester Table of Contents  

E-Print Network (OSTI)

Student Conduct Code Procedure: Rochester PROCEDURE Table of Contents Introduction and purpose To whom does this policy apply Complaints of violations of Board of Regents Policy: Student Conduct Code Informal Resolution Formal Resolution Possible sanctions for violations of Board of Regents Policy: Student

Jiang, Tiefeng

232

Nanopatterned Metallic Films for Use As Transparent Conductive Electrodes in  

E-Print Network (OSTI)

Nanopatterned Metallic Films for Use As Transparent Conductive Electrodes in Optoelectronic Devices metallic films as transparent conductive electrodes in optoelectronic devices. We find that the physics electrodes are critical to the operation of optoelectronic devices. Effective elec- trodes need to combine

Fan, Shanhui

233

Residence Hall Handbook Policies, Regulations, and Standards of Conduct  

E-Print Network (OSTI)

does not tolerate physical or psychological threats, harassment, intimidation, or violence directed1 Residence Hall Handbook Policies, Regulations, and Standards of Conduct Updated August 2013 member who works, lives, studies, teaches, does research, conducts business or is involved in the living

Stowell, Michael

234

An Environment of Conducting Families of Software Engineering Experiments  

E-Print Network (OSTI)

An Environment of Conducting Families of Software Engineering Experiments Lorin Hochstein3 Taiga Environment of Conducting Families of 2 #12;Software Engineering Experiments Abstract The classroom Software Engineering2 College Park, 20742 MD, USA University of Nebraska ­ Lincoln3 Computer Science

Basili, Victor R.

235

Pricing and Firm Conduct in California's Deregulated Electricity Market  

E-Print Network (OSTI)

sector to competitive forces by restructuring the method of procuring electricity. Private electricPWP-080 Pricing and Firm Conduct in California's Deregulated Electricity Market Steven L. Puller.ucei.berkeley.edu/ucei #12;Pricing and Firm Conduct in California's Deregulated Electricity Market Steven L. Puller August

California at Berkeley. University of

236

THE VIBRATION OF A CONDUCTING WIRE IN A MAGNETIC FIELD  

Science Journals Connector (OSTI)

......1963 research-article Articles THE VIBRATION OF A CONDUCTING WIRE IN A MAGNETIC FIELD...Polytechnic Institute of Brooklyn. The vibration of a perfectly flexible, stretched...inpedance of the wire is discuassed. THE VIBRATION OF A CONDUCTING WIRE IN A MAGNETIC FIELD......

M.A. LEIBOWITZ; R.C. ACKERBERG

1963-11-01T23:59:59.000Z

237

HEALTH CARE COLLEGES CODE OF STUDENT PROFESSIONAL CONDUCT  

E-Print Network (OSTI)

10/14/08 Page 1 HEALTH CARE COLLEGES CODE OF STUDENT PROFESSIONAL CONDUCT (APPROVED BY THE BOARD OF TRUSTEES) ARTICLE 1: INTRODUCTION A. Rationale The credibility of a health care professional is based. Consequently, students in the health care colleges have a particular obligation to conduct themselves at all

Hayes, Jane E.

238

CRAD, Conduct of Operations - Los Alamos National Laboratory Waste  

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

Conduct of Operations - Los Alamos National Laboratory Waste Conduct of Operations - Los Alamos National Laboratory Waste Characterization, Reduction, and Repackaging Facility CRAD, Conduct of Operations - Los Alamos National Laboratory Waste Characterization, Reduction, and Repackaging Facility A section of Appendix C to DOE G 226.1-2 "Federal Line Management Oversight of Department of Energy Nuclear Facilities." Consists of Criteria Review and Approach Documents (CRADs) used for an assessment of the Conduct of Operations Program portion of an Operational Readiness Review at the Los Alamos National Laboratory, Waste Characterization, Reduction, and Repackaging Facility. CRADs provide a recommended approach and the types of information to gather to assess elements of a DOE contractor's programs. CRAD, Conduct of Operations - Los Alamos National Laboratory Waste

239

Industrial Energy Audit Guidebook: Guidelines for Conducting an Energy  

Open Energy Info (EERE)

Industrial Energy Audit Guidebook: Guidelines for Conducting an Energy Industrial Energy Audit Guidebook: Guidelines for Conducting an Energy Audit in Industrial Facilities Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Industrial Energy Audit Guidebook: Guidelines for Conducting an Energy Audit in Industrial Facilities Agency/Company /Organization: Lawrence Berkeley National Laboratory Sector: Energy Focus Area: Energy Efficiency, Industry Resource Type: Guide/manual Website: china.lbl.gov/sites/china.lbl.gov/files/LBNL-3991E.Industrial%20Energy Industrial Energy Audit Guidebook: Guidelines for Conducting an Energy Audit in Industrial Facilities Screenshot References: Industrial Energy Audit Guidebook[1] "This guidebook provides guidelines for energy auditors regarding the key elements for preparing for an energy audit, conducting an inventory and

240

Electrical Conductivity of Soils and Rocks | Open Energy Information  

Open Energy Info (EERE)

form form View source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit with form History Facebook icon Twitter icon » Electrical Conductivity of Soils and Rocks Jump to: navigation, search OpenEI Reference LibraryAdd to library Report: Electrical Conductivity of Soils and Rocks Author J.D. McNeill Organization Geonics Limited Published Geonics Limited, 1980 Report Number TN-5 DOI Not Provided Check for DOI availability: http://crossref.org Online Internet link for Electrical Conductivity of Soils and Rocks Citation J.D. McNeill (Geonics Limited). 1980. Electrical Conductivity of Soils and Rocks. TN-5 Edition. ?: Geonics Limited. Report No.: TN-5. Retrieved from "http://en.openei.org/w/index.php?title=Electrical_Conductivity_of_Soils_and_Rocks&oldid=695344"

Note: This page contains sample records for the topic "ionic-electronic conductivity miec" 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

CRAD, Conduct of Operations - Y-12 Enriched Uranium Operations Oxide  

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

Conduct of Operations - Y-12 Enriched Uranium Operations Conduct of Operations - Y-12 Enriched Uranium Operations Oxide Conversion Facility CRAD, Conduct of Operations - Y-12 Enriched Uranium Operations Oxide Conversion Facility January 2005 A section of Appendix C to DOE G 226.1-2 "Federal Line Management Oversight of Department of Energy Nuclear Facilities." Consists of Criteria Review and Approach Documents (CRADs) used for a January, 2005 assessment of Conduct of Operations program at the Y-12 - Enriched Uranium Operations Oxide Conversion Facility. CRADs provide a recommended approach and the types of information to gather to assess elements of a DOE contractor's programs. CRAD, Conduct of Operations - Y-12 Enriched Uranium Operations Oxide Conversion Facility More Documents & Publications CRAD, DOE Oversight - Y-12 Enriched Uranium Operations Oxide Conversion

242

CRAD, Conduct of Operations - Idaho Accelerated Retrieval Project Phase II  

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

Conduct of Operations - Idaho Accelerated Retrieval Project Conduct of Operations - Idaho Accelerated Retrieval Project Phase II CRAD, Conduct of Operations - Idaho Accelerated Retrieval Project Phase II February 2006 A section of Appendix C to DOE G 226.1-2 "Federal Line Management Oversight of Department of Energy Nuclear Facilities." Consists of Criteria Review and Approach Documents (CRADs) used for a February, 2006 Commencement of Operations assessment of the Conduct of Operations program at the Idaho National Laboratory, Idaho Accelerated Retrieval Project Phase II. CRADs provide a recommended approach and the types of information to gather to assess elements of a DOE contractor's programs. CRAD, Conduct of Operations - Idaho Accelerated Retrieval Project Phase II More Documents & Publications

243

Gas Code of Conduct (Connecticut) | Department of Energy  

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

Gas Code of Conduct (Connecticut) Gas Code of Conduct (Connecticut) Gas Code of Conduct (Connecticut) < Back Eligibility Agricultural Commercial Construction Fed. Government Fuel Distributor General Public/Consumer Industrial Installer/Contractor Institutional Investor-Owned Utility Local Government Low-Income Residential Multi-Family Residential Municipal/Public Utility Nonprofit Residential Retail Supplier Rural Electric Cooperative Schools State/Provincial Govt Systems Integrator Transportation Tribal Government Utility Program Info State Connecticut Program Type Safety and Operational Guidelines Provider Public Utilities Regulatory Authority The Gas Code of Conduct sets forth the standard of conduct for transactions, direct or indirect, between gas companies and their affiliates. The purpose of these regulations is to promote competitive

244

Thermal conductivity of Permian Basin bedded salt at elevated pressure  

SciTech Connect

Measurements of thermal conductivity were made on five core samples of bedded rock salt from the Permian Basin in Texas. The sample size was 100 mm in diameter by 250 mm in length. Measurements were conducted under confining pressures ranging from 3.8 to 31.0 MPa and temperatures from room temperature to 473 K. Conductivity showed no dependence on confining pressure, but showed a monotonic, negative temperature dependence. Four of the five samples showed conductivities clustered in a range of 5.6 +- 0.5 W/m.K at room temperature, falling to 3.6 +- 0.3 W/m.K at 473 K. These values are approximately 20% below the values for pure halite, reflecting perhaps the 5 to 20% non-halite component of the samples. The fifth sample showed a conductivity vs temperature dependence much like that of halite. 19 references, 4 figures.

Durham, W.B.; Boro, C.O.; Beiriger, J.M.

1984-04-01T23:59:59.000Z

245

Reduction of Thermal Conductivity in Wafer-Bonded Silicon  

SciTech Connect

Blocks of silicon up to 3-mm thick have been formed by directly bonding stacks of thin wafer chips. These stacks showed significant reductions in the thermal conductivity in the bonding direction. In each sample, the wafer chips were obtained by polishing a commercial wafer to as thin as 36 {micro}m, followed by dicing. Stacks whose starting wafers were patterned with shallow dots showed greater reductions in thermal conductivity. Diluted-HF treatment of wafer chips prior to bonding led to the largest reduction of the effective thermal conductivity, by approximately a factor of 50. Theoretical modeling based on restricted conduction through the contacting dots and some conduction across the planar nanometer air gaps yielded fair agreement for samples fabricated without the HF treatment.

ZL Liau; LR Danielson; PM Fourspring; L Hu; G Chen; GW Turner

2006-11-27T23:59:59.000Z

246

Nuclear Spin Lattice Relaxation and Conductivity Studies of the Non-Arrhenius Conductivity Behavior in Lithium Fast Ion Conducting Sulfide Glasses  

SciTech Connect

As time progresses, the world is using up more of the planet's natural resources. Without technological advances, the day will eventually arrive when these natural resources will no longer be sufficient to supply all of the energy needs. As a result, society is seeing a push for the development of alternative fuel sources such as wind power, solar power, fuel cells, and etc. These pursuits are even occurring in the state of Iowa with increasing social pressure to incorporate larger percentages of ethanol in gasoline. Consumers are increasingly demanding that energy sources be more powerful, more durable, and, ultimately, more cost efficient. Fast Ionic Conducting (FIC) glasses are a material that offers great potential for the development of new batteries and/or fuel cells to help inspire the energy density of battery power supplies. This dissertation probes the mechanisms by which ions conduct in these glasses. A variety of different experimental techniques give a better understanding of the interesting materials science taking place within these systems. This dissertation discusses Nuclear Magnetic Resonance (NMR) techniques performed on FIC glasses over the past few years. These NMR results have been complimented with other measurement techniques, primarily impedance spectroscopy, to develop models that describe the mechanisms by which ionic conduction takes place and the dependence of the ion dynamics on the local structure of the glass. The aim of these measurements was to probe the cause of a non-Arrhenius behavior of the conductivity which has been seen at high temperatures in the silver thio-borosilicate glasses. One aspect that will be addressed is if this behavior is unique to silver containing fast ion conducting glasses. more specifically, this study will determine if a non-Arrhenius correlation time, {tau}, can be observed in the Nuclear Spin Lattice Relaxation (NSLR) measurements. If so, then can this behavior be modeled with a new single distribution of activation energies (DAE) to calculate the corresponding conductivity and relaxation rates as a function of temperature and frequency?

Benjamin Michael Meyer

2003-05-31T23:59:59.000Z

247

Network Flow Modeling Via Lattice-Boltzmann Based Channel Conductance  

SciTech Connect

Lattice-Boltzmann (LB) computations of single phase, pore-to-pore conductance are compared to models in which such conductances are computed via standard pore body-channel-pore body series resistance (SR), with the conductance of each individual element (pore body, channel) based on geometric shape factor measurements. The LB computations, based upon actual channel geometry derived from X-ray computed tomographic imagery, reveal that the variation in conductance for channels having similar shape factor is much larger than is adequately captured by the geometric models. Fits to the dependence of median value of conductance versus shape factor from the LB-based computations show a power law dependence of higher power than that predicted by the geometric models. We introduce two network flow models based upon the LB conductance computations: one model is based upon LB computations for each pore-to-pore connection; the second is based upon a power law fit to the relationship between computed conductance and throat shape factor. Bulk absolute permeabilities for Fontainebleau sandstone images are computed using the SR-based network models and the two LB-based models. Both LB-based network models produce bulk absolute permeability values that fit published data more accurately than the SR-based models.

Sholokhova, Y.; Kim, D; Lindquist, W

2009-01-01T23:59:59.000Z

248

Developing Low-Conductance Window Frames: Capabilities and Limitations of  

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

Developing Low-Conductance Window Frames: Capabilities and Limitations of Developing Low-Conductance Window Frames: Capabilities and Limitations of Current Window Heat Transfer Design Tools Title Developing Low-Conductance Window Frames: Capabilities and Limitations of Current Window Heat Transfer Design Tools Publication Type Journal Article LBNL Report Number LBNL-1022E Year of Publication 2008 Authors Gustavsen, Arlid, Dariush K. Arasteh, Bjørn Petter Jelle, Dragan C. Curcija, and Christian Kohler Journal Journal of Building Physics Volume 32 Pagination 131-153 Call Number LBNL-1022E Abstract While window frames typically represent 20-30% of the overall window area, their impact on the total window heat transfer rates may be much larger. This effect is even greater in low-conductance (highly insulating) windows which incorporate very low conductance glazings. Developing low-conductance window frames requires accurate simulation tools for product research and development. Based on a literature review and an evaluation of current methods of modeling heat transfer through window frames, we conclude that current procedures specified in ISO standards are not sufficiently adequate for accurately evaluating heat transfer through the low-conductance frames.

249

Conductive Polymer Binder-Enabled Cycling of Pure Tin Nanoparticle  

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

Conductive Polymer Binder-Enabled Cycling of Pure Tin Nanoparticle Conductive Polymer Binder-Enabled Cycling of Pure Tin Nanoparticle Composite Anode Electrodes for a Lithium-Ion Battery Title Conductive Polymer Binder-Enabled Cycling of Pure Tin Nanoparticle Composite Anode Electrodes for a Lithium-Ion Battery Publication Type Journal Article Year of Publication 2013 Authors Xun, Shidi, Xiangyun Song, Vincent S. Battaglia, and Gao Liu Journal Journal of the Electrochemical Society Volume 160 Start Page A849 Issue 6 Pagination A849 - A855 Date Published 01/2013 ISSN 0013-4651 Abstract Pure tin (Sn) nanoparticles can be cycled in stable and high gravimetric capacity (>500 mAh/g) with a polyfluorene-type conductive polymer binder in composite electrodes. Crystalline Sn nanoparticles (<150 nanometers, nm) were used as anode materials in this study. The average diameter of Sn secondary particles is 270 nm, calculated based on BET surface area. The composite electrodes contain a conductive polymer binder that constitutes 2% to 10% of the material, without any conductive additives (e.g., acetylene black). The electrode containing the 5% conductive binder showed the best cycling performance, with a reversible capacity of 510 mAh/g. Crystallinity of Sn particles gradually degrades during cycling, and pulverization of particles was observed after long-term cycling, leading to the capacity fade. The conductive polymer binder shows advantages over other conventional binders, such as Poly(vinylidene difluoride) (PVDF) and carboxymethylcellulose (CMC) binders, because it can provide electrical conductivity and strong adhesion during Sn volume change.

250

Low Dose Radiation Program: Links - Organizations Conducting Radiation  

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

Conducting Low Dose Radiation Research Conducting Low Dose Radiation Research DOE Low Dose Radiation Research Program DoReMi Integrating Low Dose Research High Level Expert Group (HLEG) on European Low Dose Risk Research Multidisciplinary European Low Dose Initiative (MELODI) RISC-RAD Radiosensitivity of Individuals and Susceptibility to Cancer induced by Ionizing Radiation United States Transuranium & Uranium Registries Organizations Conducting other Radiation Research Argonne National Laboratory (ANL) Armed Forces Radiology Research Institute (AFRRI) Atmospheric Radiation Measurement (ARM) Program Brookhaven National Laboratory (BNL) Center for Devices and Radiological Health (CDRH) Central Research Institute of Electric Power Industry (CRIEPI) Colorado State University Columbia University

251

Conductivity and dielectric constants of LiD  

Science Journals Connector (OSTI)

The dielectric constant of LiD has been measured in the frequency region 5-500 kHz at different temperatures up to 340 °C. Compared to the results of other workers, the LiD conductivity curves are found to be displaced slightly to lower values than those of LiH. Furthermore, it is also proved that the high ac-conductivity values found by other workers at low temperature in the case of LiH correspond not to true conductivity but are caused by reorientation of complexes. Activation energies corresponding to the motion of a free cation vacancy or the reorientation of complexes have been determined.

P. Varotsos

1974-02-15T23:59:59.000Z

252

A study of temperature distributions due to conduction reservoir heating  

E-Print Network (OSTI)

of thermal conductivity with temperature. He showed this effect could be very important in considering a material such as oil shale, where the conductivity of the raw shale may be five times as great as that of the spent shale. Neglecting this variation... conduction model to investigate the in place heating of oil shale by hot gases forced through a fracture. The heat injection rate he considered is much less than would normally be employed for steam injection into permeable reservoirs and is only about...

Connaughton, Charles Richard

2012-06-07T23:59:59.000Z

253

Measurements of prompt radiation induced conductivity of Kapton.  

SciTech Connect

We performed measurements of the prompt radiation induced conductivity in thin samples of Kapton (polyimide) at the Little Mountain Medusa LINAC facility in Ogden, UT. Three mil samples were irradiated with a 0.5 {mu}s pulse of 20 MeV electrons, yielding dose rates of 1E9 to 1E10 rad/s. We applied variable potentials up to 2 kV across the samples and measured the prompt conduction current. Analysis rendered prompt conductivity coefficients between 6E-17 and 2E-16 mhos/m per rad/s, depending on the dose rate and the pulse width.

Preston, Eric F. (ITT Corporation, Colorado Springs, CO); Zarick, Thomas Andrew; Sheridan, Timothy J.; Hartman, E. Frederick; Stringer, Thomas Arthur (ITT Corporation, Colorado Springs, CO)

2010-10-01T23:59:59.000Z

254

Vibration-Induced Conductivity Fluctuation (VICOF) Testing of Soils  

E-Print Network (OSTI)

In this Letter, we propose and experimentally demonstrate a simple method to provide additional in-formation by conductivity measurements of soils. The AC electrical conductance of the soil is measured while it is exposed to a periodic vibration. The vibration-induced density fluctuation implies a corresponding conductivity fluctuation that can be seen as combination frequency components, the sum and the difference of the mean AC frequency and the double of vibration frequency, in the current response. The method is demonstrated by measurements on clayey and sandy soils.

Laszlo B. Kish; Cristine L. S. Morgan; Andrea Sz. Kishne

2005-10-31T23:59:59.000Z

255

Fiber/Matrix Interfacial Thermal Conductance Effect on the Thermal Conductivity of SiC/SiC Composites  

SciTech Connect

SiC/SiC composites used in fusion reactor applications are subjected to high heat fluxes and require knowledge and tailoring of their in-service thermal conductivity. Accurately predicting the thermal conductivity of SiC/SiC composites as a function of temperature will guide the design of these materials for their intended use, which will eventually include the effects of 14-MeV neutron irradiations. This paper applies an Eshelby-Mori-Tanaka approach (EMTA) to compute the thermal conductivity of unirradiated SiC/SiC composites. The homogenization procedure includes three steps. In the first step EMTA computes the homogenized thermal conductivity of the unidirectional (UD) SiC fiber embraced by its coating layer. The second step computes the thermal conductivity of the UD composite formed by the equivalent SiC fibers embedded in a SiC matrix, and finally the thermal conductivity of the as-formed SiC/SiC composite is obtained by averaging the solution for the UD composite over all possible fiber orientations using the second-order fiber orientation tensor. The EMTA predictions for the transverse thermal conductivity of several types of SiC/SiC composites with different fiber types and interfaces are compared to the predicted and experimental results by Youngblood et al.

Nguyen, Ba Nghiep; Henager, Charles H.

2013-04-20T23:59:59.000Z

256

DOE Selects Ten Projects to Conduct Advanced Turbine Technology Research |  

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

Ten Projects to Conduct Advanced Turbine Technology Ten Projects to Conduct Advanced Turbine Technology Research DOE Selects Ten Projects to Conduct Advanced Turbine Technology Research August 14, 2013 - 1:44pm Addthis WASHINGTON, D.C. - Ten university projects to conduct advanced turbine technology research under the Office of Fossil Energy's University Turbine Systems Research (UTSR) Program have been selected by the U.S. Department of Energy (DOE) for additional development. Developing gas turbines that run with greater cleanness and efficiency than current models is of great benefit both to the environment and the power industry, but development of such advanced turbine systems requires significant advances in high-temperature materials science, an understanding of combustion phenomena, and development of innovative

257

EPA -- Addressing Children's Health through Reviews Conducted Pursuant to  

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

EPA -- Addressing Children's Health through Reviews Conducted EPA -- Addressing Children's Health through Reviews Conducted Pursuant to the National Environmental Policy Act and Section 309 of the Clean Air Act EPA -- Addressing Children's Health through Reviews Conducted Pursuant to the National Environmental Policy Act and Section 309 of the Clean Air Act Addressing Children's Health through Reviews Conducted Pursuant to the National Environmental Policy Act and Section 309 of the Clean Air Act Executive Order 13045, "Protection of Children from Environmental Health Risks and Safety Risks " (April 21, 1997), directs Federal agencies, to the extent permitted by law and appropriate, to make it a high priority to identify and assess environmental health and safety risks that may disproportionately affect children and to ensure that policies, programs,

258

Seven Universities Selected To Conduct Advanced Turbine Technology Studies  

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

Seven Universities Selected To Conduct Advanced Turbine Technology Seven Universities Selected To Conduct Advanced Turbine Technology Studies Seven Universities Selected To Conduct Advanced Turbine Technology Studies August 4, 2010 - 1:00pm Addthis Washington, DC - Seven universities have been selected by the U.S. Department of Energy (DOE) to conduct advanced turbine technology studies under the Office of Fossil Energy's (FE) University Turbine Systems Research (UTSR) Program. The universities - located in Georgia, Texas, North Dakota, Louisiana, California, and New York - will investigate the technology needed for the clean and efficient operation of turbines using coal-derived systhesis gas (syngas) and high hydrogen content (HHC) fuels. This technology is crucial to developing advanced coal-based power generation processes, such as

259

EPA -- Addressing Children's Health through Reviews Conducted Pursuant to  

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

EPA -- Addressing Children's Health through Reviews Conducted EPA -- Addressing Children's Health through Reviews Conducted Pursuant to the National Environmental Policy Act and Section 309 of the Clean Air Act EPA -- Addressing Children's Health through Reviews Conducted Pursuant to the National Environmental Policy Act and Section 309 of the Clean Air Act Addressing Children's Health through Reviews Conducted Pursuant to the National Environmental Policy Act and Section 309 of the Clean Air Act Executive Order 13045, "Protection of Children from Environmental Health Risks and Safety Risks " (April 21, 1997), directs Federal agencies, to the extent permitted by law and appropriate, to make it a high priority to identify and assess environmental health and safety risks that may disproportionately affect children and to ensure that policies, programs,

260

Microsoft Word - S0212500_HydraulicConductivity-PRB.doc  

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

Hydraulic Conductivity of the Monticello Hydraulic Conductivity of the Monticello Permeable Reactive Barrier November 2005 Update January 2006 DOE-LM/GJ1086-2006 ESL-RPT-2006-01 DOE-LM/GJ1086-2006 ESL-RPT-2006-01 Hydraulic Conductivity of the Monticello Permeable Reactive Barrier-November 2005 Update January 2006 Work Performed by S.M. Stoller Corporation under DOE Contract No. DE-AC01-02GJ79491 for the U.S. Department of Energy Office of Legacy Management, Grand Junction, Colorado U.S. Department of Energy Hydraulic Conductivity of the Monticello PRB-November 2005 Update January 2006 Doc. No. S0212500 Page iii Contents 1.0 Introduction ...........................................................................................................................

Note: This page contains sample records for the topic "ionic-electronic conductivity miec" 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

Seven Universities Selected To Conduct Advanced Turbine Technology Studies  

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

Seven Universities Selected To Conduct Advanced Turbine Technology Seven Universities Selected To Conduct Advanced Turbine Technology Studies Seven Universities Selected To Conduct Advanced Turbine Technology Studies August 4, 2010 - 1:00pm Addthis Washington, DC - Seven universities have been selected by the U.S. Department of Energy (DOE) to conduct advanced turbine technology studies under the Office of Fossil Energy's (FE) University Turbine Systems Research (UTSR) Program. The universities - located in Georgia, Texas, North Dakota, Louisiana, California, and New York - will investigate the technology needed for the clean and efficient operation of turbines using coal-derived systhesis gas (syngas) and high hydrogen content (HHC) fuels. This technology is crucial to developing advanced coal-based power generation processes, such as

262

NNSA, IAEA Conduct Emergency Response Training for First Responders for  

National Nuclear Security Administration (NNSA)

IAEA Conduct Emergency Response Training for First Responders for IAEA Conduct Emergency Response Training for First Responders for Ports and Customs | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Continuing Management Reform Countering Nuclear Terrorism About Us Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations Media Room Congressional Testimony Fact Sheets Newsletters Press Releases Speeches Events Social Media Video Gallery Photo Gallery NNSA Archive Federal Employment Apply for Our Jobs Our Jobs Working at NNSA Blog Home > Media Room > Press Releases > NNSA, IAEA Conduct Emergency Response Training for ... Press Release NNSA, IAEA Conduct Emergency Response Training for First Responders for

263

NNSA Conducts Radiological Training in Slovenia | National Nuclear Security  

National Nuclear Security Administration (NNSA)

NNSA Blog > NNSA Conducts Radiological Training in Slovenia NNSA Blog > NNSA Conducts Radiological Training in Slovenia NNSA Conducts Radiological Training in Slovenia Posted By Office of Public Affairs NNSA Blog NNSA today concluded International Radiological Assistance Program Training for Emergency Response (I-RAPTER) in Slovenia. The training, co-sponsored by the International Atomic Energy Agency, was provided to 36 nuclear/radiological emergency responders, which included 15 participants from Slovenia and 21 students from 20 other countries. The training was conducted with involvement of personnel from Sandia National Laboratories, the Remote Sensing Laboratory and Idaho National Laboratory. To read more about the training see: http://www.nnsa.energy.gov/mediaroom/pressreleases/slovenia Posted on March 22, 2012 at 4:13 pm ET

264

News Release: DOE to Conduct Additional Groundwater Tests at Riverton  

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

to Conduct Additional Groundwater Tests at to Conduct Additional Groundwater Tests at Riverton UMTRCA Site News Release: DOE to Conduct Additional Groundwater Tests at Riverton UMTRCA Site July 30, 2012 - 11:08am Addthis News Contact: Contractor, Judy Miller, S.M. Stoller Corporation Public Affairs (970) 248-6363 jmiller@lm.doe.gov Tests will indicate progress of current groundwater remediation strategy The U.S. Department of Energy will conduct additional characterization work at the Riverton, WY, Uranium Mill Tailings Radiation Control Act (UMTRCA) Site this summer, including extensive groundwater and soil sampling. The Department will use the sampling results to update the site conceptual model and to develop a revised groundwater flow and transport model to more accurately simulate natural flushing processes.

265

Microsoft Word - S0212500_HydraulicConductivity-PRB.doc  

Office of Legacy Management (LM)

Hydraulic Conductivity of the Monticello Hydraulic Conductivity of the Monticello Permeable Reactive Barrier November 2005 Update January 2006 DOE-LM/GJ1086-2006 ESL-RPT-2006-01 DOE-LM/GJ1086-2006 ESL-RPT-2006-01 Hydraulic Conductivity of the Monticello Permeable Reactive Barrier-November 2005 Update January 2006 Work Performed by S.M. Stoller Corporation under DOE Contract No. DE-AC01-02GJ79491 for the U.S. Department of Energy Office of Legacy Management, Grand Junction, Colorado U.S. Department of Energy Hydraulic Conductivity of the Monticello PRB-November 2005 Update January 2006 Doc. No. S0212500 Page iii Contents 1.0 Introduction ...........................................................................................................................

266

Resonant bonding leads to low lattice thermal conductivity  

E-Print Network (OSTI)

Understanding the lattice dynamics and low thermal conductivities of IV–VI, V[subscript 2]–VI[subscript 3] and V materials is critical to the development of better thermoelectric and phase-change materials. Here we provide ...

Lee, Sangyeop

267

Activation of conductive pathways via deformation-induced instabilities  

E-Print Network (OSTI)

Inspired by the pattern transformation of periodic elastomeric cellular structures, the purpose of this work is to exploit this unique ability to activate conductive via deformation-induced instabilities. Two microstructural ...

Ni, Xinchen

2014-01-01T23:59:59.000Z

268

Investigation on thermal conductivity and AC impedance of graphite suspension  

E-Print Network (OSTI)

Over the past decade, some groups have reported that nanofluids, which are liquids containing suspensions of nanoparticles, have substantially higher thermal conductivity than that of the base fluids. However, the reported ...

Wang, Jianjian, S.M. Massachusetts Institute of Technology

2011-01-01T23:59:59.000Z

269

Process for fabricating composite material having high thermal conductivity  

DOE Patents (OSTI)

A process for fabricating a composite material such as that having high thermal conductivity and having specific application as a heat sink or heat spreader for high density integrated circuits. The composite material produced by this process has a thermal conductivity between that of diamond and copper, and basically consists of coated diamond particles dispersed in a high conductivity metal, such as copper. The composite material can be fabricated in small or relatively large sizes using inexpensive materials. The process basically consists, for example, of sputter coating diamond powder with several elements, including a carbide forming element and a brazeable material, compacting them into a porous body, and infiltrating the porous body with a suitable braze material, such as copper-silver alloy, thereby producing a dense diamond-copper composite material with a thermal conductivity comparable to synthetic diamond films at a fraction of the cost.

Colella, Nicholas J. (Livermore, CA); Davidson, Howard L. (San Carlos, CA); Kerns, John A. (Livermore, CA); Makowiecki, Daniel M. (Livermore, CA)

2001-01-01T23:59:59.000Z

270

Experimental Study of Acid Fracture Conductivity of Austin Chalk Formation  

E-Print Network (OSTI)

Acid fracture conductivity and the effect of key variables in the etching process during acid fracturing can be assessed at the laboratory scale. This is accomplished by using an experimental apparatus that simulates acid injection fluxes comparable...

Nino Penaloza, Andrea

2013-05-01T23:59:59.000Z

271

Determining the Porosity and Saturated Hydraulic Conductivity of Binary Mixtures  

SciTech Connect

Gravels and coarse sands make up significant portions of some environmentally important sediments, while the hydraulic properties of the sediments are typically obtained in the laboratory using only the fine fraction (e.g., <2 mm or 4.75 mm). Researchers have found that the content of gravel has significant impacts on the hydraulic properties of the bulk soils. Laboratory experiments were conducted to measure the porosity and the saturated hydraulic conductivity of binary mixtures with different fractions of coarse and fine components. We proposed a mixing-coefficient model to estimate the porosity and a power-averaging method to determine the effective particle diameter and further to predict the saturated hydraulic conductivity of binary mixtures. The proposed methods could well estimate the porosity and saturated hydraulic conductivity of the binary mixtures for the full range of gravel contents and was successfully applied to two data sets in the literature.

Zhang, Z. F.; Ward, Anderson L.; Keller, Jason M.

2009-09-27T23:59:59.000Z

272

RIS-M-2478 ELECTRICAL CONDUCTIVITY, DEFECT STRUCTURE AND  

E-Print Network (OSTI)

BACKGROUND 7 THEORY 8 MODEL FOR CALCULATION OF THEORETICAL DENSITY IN THE SYSTEM 10 EXPERIMENTAL 12 sensors, fuel c e l l s and electrolyzers. The defect responsible for the high conductivity

273

Electrical conductivity of plasmas of DB white dwarf atmospheres  

Science Journals Connector (OSTI)

......Electrical conductivity of plasmas of DB white dwarf atmospheres V. A. Sreckovic 1 Lj...applicable for the helium plasmas of DB white dwarf atmospheres described in Koester...study of DB white dwarf atmosphere plasma properties, helium plasmas......

V. A. Sreckovic; Lj. M. Ignjatovic; A. A. Mihajlov; M. S. Dimitrijevic

2010-07-21T23:59:59.000Z

274

Conductivity factor in the electrostatic coalescence of crude oil emulsions  

E-Print Network (OSTI)

vertically-oriented, cylindrical coalescer. The electrical conductivity of each phase of the water-in-oil emulsion was varied to determine their effects on the rate of coalescence. Both light and intermediate grades of crude oil emulsions were modified...

Nelson, James B

1998-01-01T23:59:59.000Z

275

Development of mixed-conducting ceramic membranes for hydrogen separation.  

SciTech Connect

SrCeO{sub 3}- and BaCeO{sub 3}-based proton conductors have been prepared and their transport properties have been investigated by impedance spectroscopy in conjunction with open circuit voltage and water vapor evolution measurements. BaCe{sub 0.8}Y{sub 0.2}O{sub 3-{delta}} exhibits the highest conductivity in a hydrogen-containing atmosphere; however, its electronic conductivity is not adequate for hydrogen separation in a nongalvanic mode. In an effort to enhance ambipolar conductivity and improve interfacial catalytic properties, BaCe{sub 0.8}Y{sub 0.2}O{sub 3-{delta}} cermets have been fabricated into membranes. The effects of ambipolar conductivity, membrane thickness, and interfacial resistance on permeation rates have been investigated. In particular, the significance of interfacial resistance is emphasized.

Guan, J.

1998-05-18T23:59:59.000Z

276

Stochastic System Identification of the Compliance of Conducting Polymers  

E-Print Network (OSTI)

Conducting polymers such as polypyrrole, polythiophene and polyaniline are currently studied as novel biologically inspired actuators. The actuation mechanism of these materials depends upon the motion of ions in and out ...

Hunter, Ian

277

Effective conductivity of loaded granular materials by numerical simulation  

Science Journals Connector (OSTI)

...studied by numerical simulation. The particles are smooth uniform spheres with...granular assemblages of frictional particles (God- dard et al. 1993, 1994) in...packed granular materials with high particle-to-medium conductivity ratio...

1998-01-01T23:59:59.000Z

278

Conduct of operations training - An innovative approach to team building  

SciTech Connect

The conduct of nuclear power plant operations is a key parameter for station management and regulators alike. Indeed, the basic methods and demeanor in which operating crews approach overall plant operations is perhaps the principal factor leading to safe and efficient operations. Hence, Commonwealth Edison's Zion Station has initiated an innovative and positive training program designed to increase operator awareness of conducting station operations in an attentive, diligent, and conscientious manner. This Conduct of Operations Training Program is a collaborative joint effort between Commonwealth Edison and the Westinghouse Nuclear Training Center. In particular, the key managers of Zion's operating department brainstormed various philosophies and strategies with senior training staff members of the Westinghouse Nuclear Training Center. The outcome of these sessions has formed the skeleton of an intensified, one-day Conduct of Operations course. Several unique aspects of this innovative course are described.

Widen, W.C.; Kurth, W.; Broccolo, A.

1987-01-01T23:59:59.000Z

279

Organic photovoltaic cell incorporating electron conducting exciton blocking layers  

DOE Patents (OSTI)

The present disclosure relates to photosensitive optoelectronic devices including a compound blocking layer located between an acceptor material and a cathode, the compound blocking layer including: at least one electron conducting material, and at least one wide-gap electron conducting exciton blocking layer. For example, 3,4,9,10 perylenetetracarboxylic bisbenzimidazole (PTCBI) and 1,4,5,8-napthalene-tetracarboxylic-dianhydride (NTCDA) function as electron conducting and exciton blocking layers when interposed between the acceptor layer and cathode. Both materials serve as efficient electron conductors, leading to a fill factor as high as 0.70. By using an NTCDA/PTCBI compound blocking layer structure increased power conversion efficiency is achieved, compared to an analogous device using a conventional blocking layers shown to conduct electrons via damage-induced midgap states.

Forrest, Stephen R.; Lassiter, Brian E.

2014-08-26T23:59:59.000Z

280

Electronic structure and quantum conductance of molecular and nano electronics  

E-Print Network (OSTI)

This thesis is dedicated to the application of a large-scale first-principles approach to study the electronic structure and quantum conductance of realistic nanomaterials. Three systems are studied using Landauer formalism, ...

Li, Elise Yu-Tzu

2011-01-01T23:59:59.000Z

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


281

The field test was conducted in the Prairie  

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

field test was conducted in the Prairie Pothole Region - an area field test was conducted in the Prairie Pothole Region - an area that stretches from central Iowa into Northern Alberta, Canada, and contains thousands of shallow wetlands formed by retreating glaciers approximately 10,000 years ago. Terrestrial carbon capture and storage (CCS) involves plant removal of CO 2 from the atmosphere using photosynthesis and storing the greenhouse gas (GHG) in biomass

282

Public Comments Received on the Draft Voluntary Code of Conduct  

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

On September 12, 2014, the Department issued a Federal Register Notice announcing the availability of a draft Voluntary Code of Conduct (VCC), which addresses data privacy surrounding smart grid technologies, for public comment. The primary goal of the VCC document is to provide principles of conduct for voluntary adoption by utilities and third parties. The public comment period closed on October 14, 2014. The comments are available below for downloading.

283

Ion Conducting Membranes for Fuel Cells and other Electrochemical Devices  

Science Journals Connector (OSTI)

ion conducting membrane; fuel cell; redox-flow battery; Li ion battery; proton; hydroxide; diffusion; conductivity; nanomorphology; hydration; visco-elastic constants; phosphate; polyelectrolyte; ionomer; block-copolymer; Nafion; Aquivion ... At this stage, however, they have an immediate potential for redox-flow battery applications, as will be discussed later. ... When the flow battery is charged or discharged, an equivalent amount of ionic charge has to cross the membrane, while the ions involved in the redox process have to be efficiently separated. ...

Klaus-Dieter Kreuer

2013-11-19T23:59:59.000Z

284

PROTON-CONDUCTING DENSE CERAMIC MEMBRANES FOR HYDROGEN SEPARATION  

SciTech Connect

This project is aimed at preparation of thin (1-10? m) membranes of a modified strontium ceramic material with improved hydrogen permeance on mesoporous substrates. The research work conducted in this reporting period was focused on the following three aspects: (1) preparation of thick proton-conducting ceramic membranes and synthesis of porous substrates as support for thin proton-conducting ceramic film, (2) setting up RF sputter deposition unit for deposition of thin ceramic films and performing deposition experiments with the sputter deposition unit, and (3) modeling hydrogen permeation through the proton-conducting ceramic membranes. Proton-conducting thulium doped strontium cerate membranes were reproducibly prepared by the citrate method. Mesoporous ceria membranes were fabricated by a sol-gel method. The membranes will be used as the substrate for coating thin strontium cerate films. A magnetron sputter deposition unit was set up and good quality thin metal alloy films were formed on the mesoporous substrates by an alternative deposition method with the sputter deposition unit. A theoretical model has been developed for hydrogen permeation through proton conducting ceramic membranes. This model can be used to quantitatively describe the hydrogen permeation data.

Jerry Y.S. Lin

2001-11-30T23:59:59.000Z

285

EFFECTS OF TRITIUM GAS EXPOSURE ON ELECTRICALLY CONDUCTING POLYMERS  

SciTech Connect

Effects of beta (tritium) and gamma irradiation on the surface electrical conductivity of two types of conducting polymer films are documented to determine their potential use as a sensing and surveillance device for the tritium facility. It was shown that surface conductivity was significantly reduced by irradiation with both gamma and tritium gas. In order to compare the results from the two radiation sources, an approximate dose equivalence was calculated. The materials were also sensitive to small radiation doses (<10{sup 5} rad), showing that there is a measurable response to relatively small total doses of tritium gas. Spectroscopy was also used to confirm the mechanism by which this sensing device would operate in order to calibrate this sensor for potential use. It was determined that one material (polyaniline) was very sensitive to oxidation while the other material (PEDOT-PSS) was not. However, polyaniline provided the best response as a sensing material, and it is suggested that an oxygen-impermeable, radiation-transparent coating be applied to this material for future device prototype fabrication. A great deal of interest has developed in recent years in the area of conducting polymers due to the high levels of conductivity that can be achieved, some comparable to that of metals [Gerard 2002]. Additionally, the desirable physical and chemical properties of a polymer are retained and can be exploited for various applications, including light emitting diodes (LED), anti-static packaging, electronic coatings, and sensors. The electron transfer mechanism is generally accepted as one of electron 'hopping' through delocalized electrons in the conjugated backbone, although other mechanisms have been proposed based on the type of polymer and dopant [Inzelt 2000, Gerard 2002]. The conducting polymer polyaniline (PANi) is of particular interest because there are extensive studies on the modulation of the conductivity by changing either the oxidation state of the main backbone chain, or by protonation of the imine groups [de Acevedo, 1999]. There are several types of radiation sensors commercially available, including ionization chambers, geiger counters, proportional counters, scintillators and solid state detectors. Each type has advantages, although many of these sensors require expensive electronics for signal amplification, are large and bulky, have limited battery life or require expensive materials for fabrication. A radiation sensor constructed of a polymeric material could be flexible, light, and the geometry designed to suit the application. Very simple and inexpensive electronics would be necessary to measure the change in conductivity with exposure to radiation and provide an alarm system when a set change of conductivity occurs in the sensor that corresponds to a predetermined radiation dose having been absorbed by the polymer. The advantages of using a polymeric sensor of this type rather than those currently in use are the flexibility of sensor geometry and relatively low cost. It is anticipated that these sensors can be made small enough for glovebox applications or have the ability to monitor the air tritium levels in places where a traditional monitor cannot be placed. There have been a few studies on the changes in conductivity of polyaniline specifically for radiation detection [de Acevedo, 1999; Lima Pacheco, 2003], but there have been no reports on the effects of tritium (beta radiation) on conducting polymers, such as polyaniline or polythiophene. The direct implementation of conducting polymers as radiation sensor materials has not yet been commercialized due to differing responses with total dose, dose rate, etc. Some have reported a large increase in the surface conductivity with radiation dose while others report a marked decrease in conductive properties; these differing observations may reflect the competing mechanisms of chain scission and cross-linking. However, it is clear that the radiation dose effects on conducting polymers must be fully understood before these materials can be used

Kane, M.; Clark, E.; Lascola, R.

2009-12-16T23:59:59.000Z

286

Estimation of composite thermal conductivity of a heterogeneous methane hydrate sample using iTOUGH2  

E-Print Network (OSTI)

15–17, 2006 ESTIMATION OF COMPOSITE THERMAL CONDUCTIVITY OFABSTRACT We determined the composite thermal conductivity (kfrom granular ice. The composite thermal conductivity was

Gupta, Arvind; Kneafsey, Timothy J.; Moridis, George J.; Seol, Yongkoo; Kowalsky, Michael B.; Sloan Jr., E.D.

2006-01-01T23:59:59.000Z

287

Electron-electron interaction effect on the conductivity and the Hall conductivity of weakly disordered electron systems  

Science Journals Connector (OSTI)

The effect of the electron-electron Coulomb interaction on the conductivity and Hall conductivity of weakly disordered (T?>1, where ? is the electron mean free path) three- and two-dimensional electron systems is studied. We find that (i) temperature-dependent interaction corrections to the impurity resistivity and the Hall coefficient are positive in three and two dimensions; (ii) in two dimensions, gapless plasmons and particle-hole excitations both contribute to the electron-electron-impurity interference correction, to the resistivity; and (iii) in two-dimensional electron systems such as GaAs heterojunctions, the electron-electron interaction gives the leading temperature-dependent correction to the impurity conductivity and the Hall conductivity more important than the corresponding corrections from the piezoelectric electron-phonon interaction.

Michael Reizer

1998-05-15T23:59:59.000Z

288

Developing a High Thermal Conductivity Fuel with Silicon Carbide Additives  

SciTech Connect

The objective of this research is to increase the thermal conductivity of uranium oxide (UO{sub 2}) without significantly impacting its neutronic properties. The concept is to incorporate another high thermal conductivity material, silicon carbide (SiC), in the form of whiskers or from nanoparticles of SiC and a SiC polymeric precursor into UO{sub 2}. This is expected to form a percolation pathway lattice for conductive heat transfer out of the fuel pellet. The thermal conductivity of SiC would control the overall fuel pellet thermal conductivity. The challenge is to show the effectiveness of a low temperature sintering process, because of a UO{sub 2}-SiC reaction at 1,377°C, a temperature far below the normal sintering temperature. Researchers will study three strategies to overcome the processing difficulties associated with pore clogging and the chemical reaction of SiC and UO{sub 2} at temperatures above 1,300°C:

Ronald baney; James Tulenko

2012-11-20T23:59:59.000Z

289

Heat conductance in nonlinear lattices at small temperature gradients  

E-Print Network (OSTI)

This paper proposes a new methodological framework within which the heat conductance in 1D lattices can be studied. The total process of heat conductance is separated into two parts where the first one is the equilibrium process at equal temperatures $T$ of both ends and the second one -- non-equilibrium with the temperature $\\Delta T$ of one end and zero temperature of the other. This approach allows significant decrease of computational time at $\\Delta T \\to 0$. The threshold temperature $T_{\\rm thr}$ is found which scales $T_{\\rm thr}(N) \\sim N^{-3}$ with the lattice size $N$ and by convention separates two mechanisms of heat conductance: phonon mechanism dominates at $T T_{\\rm thr}$. Solitons and breathers are directly visualized in numerical experiments. The problem of heat conductance in non-linear lattices in the limit $\\Delta T \\to 0$ can be reduced to the heat conductance of harmonic lattice with time-dependent stochastic rigidities determined by the equilibrium process at temperature $T$. The detailed analysis is done for the $\\beta$-FPU lattice though main results are valid for one-dimensional lattices with arbitrary potentials.

T. Yu. Astakhova; V. N. Likhachev; G. A. Vinogradov

2010-06-09T23:59:59.000Z

290

Correlation of conductivity and angle integrated valence band photoemission  

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

Correlation of conductivity and angle integrated valence band photoemission Correlation of conductivity and angle integrated valence band photoemission characteristics in single crystal iron perovskites for 300 K < T < 800 K: Comparison of surface and bulk sensitive methods Title Correlation of conductivity and angle integrated valence band photoemission characteristics in single crystal iron perovskites for 300 K < T < 800 K: Comparison of surface and bulk sensitive methods Publication Type Journal Article Year of Publication 2010 Authors Braun, Artur, Bongjin S. Mun, Yun Sun, Z. Liu, Oliver Gröning, R. Mäder, Selma Erat, Xueyuan Zhang, Samuel S. Mao, Ekaterina Pomjakushina, Kazimierz Conder, and Thomas Graule Journal Journal of Electron Spectroscopy and Related Phenomena Volume 181 Issue 1 Pagination 56-62 Date Published 07/2013

291

Ethics - Fourteen Principles of Ethical Conduct for Federal Employees |  

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

Fourteen Fourteen Principles of Ethical Conduct for Federal Employees Ethics - Fourteen Principles of Ethical Conduct for Federal Employees This guide provides a brief overview of the ethics rules and standards of ethical conduct that all employees should know and follow. Discuss any question not answered here with your supervisor or ethics counsel. Your ethics counsel is: For Field Office employees, your respective field counsel. For Headquarters employees, the Office of the Assistant General Counsel for General Law: 202-586-1522 or Standardsofconduct@hq.doe.gov. Public service is a public trust. Federal employees must always place loyalty to high ethical standards above private gain. Understanding and observing ethics rules are essential to fulfilling that trust. Print and

292

Alan J. Heeger, Conductive Polymers, and Plastic Solar Cells  

Office of Scientific and Technical Information (OSTI)

Alan J. Heeger, Conductive Polymers, and Plastic Solar Cells Alan J. Heeger, Conductive Polymers, and Plastic Solar Cells Resources with Additional Information · Patents · Videos After receiving 'his physics Ph.D. at the University of California at Berkeley in 1961, [Alan J.] Heeger would spend the next 20 years teaching the subject at the University of Pennsylvania - while also designing and then launching one of the nation's premiere scientific think tanks: the Laboratory for Research on the Structure of Matter. Alan J. Heeger Courtesy of Randy Lamb, UCSB It was there in the Penn experimental lab, during the fall and early winter of 1976, that Heeger and two colleagues would first begin to explore the possibility of manipulating "long chains of polymers" with an eye to "altering their properties" so that they could be coaxed into conducting electricity.'1

293

Federal Register Notice: Plan for Conduct of 2012 Electric Transmission  

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

Notice: Plan for Conduct of 2012 Electric Notice: Plan for Conduct of 2012 Electric Transmission Congestion Study Federal Register Notice: Plan for Conduct of 2012 Electric Transmission Congestion Study November 10, 2011 - 1:42pm Addthis The Department has issued a Federal Register Notice initiating preparations for development of the 2012 National Electric Transmission Congestion Study. The Department is seeking comments on what publicly-available data and information should be considered, and what types of analysis should be performed to identify and understand the significance and character of transmission congestion. DOE will host four regional pre-study workshops in early December 2011 to receive input and suggestions concerning the study. Addthis Related Articles 2012 Congestion Study Workshops to be Held in December; Agendas Now

294

Enforcement Guidance Supplement 98-01: Duration of Investigations Conducted  

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

Duration of Investigations Duration of Investigations Conducted Pursuant to 10 CFR 820.21; Purpose of Transcript Requirements Set Forth in 10 CFR 820.10 (d) Enforcement Guidance Supplement 98-01: Duration of Investigations Conducted Pursuant to 10 CFR 820.21; Purpose of Transcript Requirements Set Forth in 10 CFR 820.10 (d) The DOE Enforcement Handbook (1087-95) provides the Office of Enforcement and lnvestigation with the opportunity to issue interim clarifying guidance occasionally with respect to the processes to be used in this office (see Section 1.3- Interim Enforcement Guidance). In particular, it is important to assist contractors and others on the relationships between the requirements of Part 820 and the Enforcement Policy, 10 CFR 820, Appendix A. Enforcement Guidance Supplement 98-01: Duration of Investigations Conducted

295

CRAD, Conduct of Operations - Oak Ridge National Laboratory High Flux  

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

Reactor Reactor CRAD, Conduct of Operations - Oak Ridge National Laboratory High Flux Isotope Reactor February 2007 A section of Appendix C to DOE G 226.1-2 "Federal Line Management Oversight of Department of Energy Nuclear Facilities." Consists of Criteria Review and Approach Documents (CRADs) used for a February, 2007 assessment of the Conduct of Operations Program in preparation for restart of the Oak Ridge National Laboratory, High Flux Isotope Reactor. CRADs provide a recommended approach and the types of information to gather to assess elements of a DOE contractor's programs. CRAD, Conduct of Operations - Oak Ridge National Laboratory High Flux Isotope Reactor More Documents & Publications CRAD, Fire Protection - Oak Ridge National Laboratory High Flux Isotope

296

Effective Conductivity of Spiral and other Radial Symmetric Assemblages  

E-Print Network (OSTI)

Assemblies of circular inclusions with spiraling laminate structure inside them are studied, such as spirals with inner inclusions, spirals with shells, assemblies of "wheels" - structures from laminates with radially dependent volume fractions, complex axisymmetric three-dimensional micro-geometries called Connected Hubs and Spiky Balls. The described assemblages model structures met in rock mechanics, biology, etc. The classical effective medium theory coupled with hierarchical homogenization is used. It is found that fields in spiral assemblages satisfy a coupled system of two second order differential equations, rather than a single differential equation; a homogeneous external field applied to the assembly is transformed into a rotated homogeneous field inside of the inclusions. The effective conductivity of the two-dimensional Star assembly is equivalent to that of Hashin-Shtrikman coated circles, but the conductivity of analogous three-dimensional Spiky Ball is different from the conductivity of coated sphere geometry.

Andrej Cherkaev; Alexander D. Pruss

2012-06-20T23:59:59.000Z

297

Conductance of two-dimensional disordered Voronoi networks  

Science Journals Connector (OSTI)

Resistor networks constructed from Voronoi polygons are models for transport by diffusive motion across local interfaces where both the interface strength and the local coordination number can be distributed. Computer simulations were performed on a series of two-dimensional networks with increasing degree of disorder, starting from a regular lattice. We find nonmonotonic behavior of the overall network conductance as a function of disorder. The observed increase of network conductance G as the random lattice is approached shows the importance of taking local topology variations into account in the description of disordered media. We discuss a general and simple way to estimate G from a particular, network-specific percentile of the distribution of local conductances.

A. Priolo; H. M. Jaeger; A. J. Dammers; S. Radelaar

1992-12-01T23:59:59.000Z

298

High-frequency conductivity of type-II superlattices  

Science Journals Connector (OSTI)

We carry out calculations of the conductivity and resistivity of an electron-hole many-layer system, i.e., a type-II superlattice, under the influence of electromagnetic waves whose frequencies are high compared to the collision frequencies and whose wavelengths are long compared to the Bohr (Debye) radius. The treatment rests on the Kubo’s formula for the conductivity and the temperature-dependent Green’s-function technique. An exact expression for the conductivity and resistivity is obtained, which is dependent on frequency, plasma parameter, spacing between adjacent layers, and density per unit area. We calculate the resistivity numerically for some typical values of the above four parameters.

Narkis Tzoar and Chao Zhang

1986-02-15T23:59:59.000Z

299

Conduction of Electricity by Dielectric Liquids at High Field Strengths  

Science Journals Connector (OSTI)

The conductivity of highly purified heptane has been measured between optical flats at field strengths up to 600,000 volts per cm at temperatures ranging from - 190°C to 20°C. Electrode separations down to 0.005 cm were used in order to minimize the effect of space charge and ionic recombination. It is concluded that electronic or collision processes are unlikely as the source of high field conductivity in heptane and probably most other liquid dielectrics as well. It is suggested that the highly nonconducting dielectric liquids should be included as extreme cases in the general class of weak electrolytes. The presence of appreciable conductivity under high electric fields is ascribed to the lowering of the energy of the hydrogen bond by the applied field.

H. J. Plumley

1941-01-15T23:59:59.000Z

300

Thermal conductivity of rigid foam insulations for aerospace vehicles  

Science Journals Connector (OSTI)

The present work describes measurements of the effective thermal conductivity of NCFI 24-124 foam, a spray-on foam insulation used formerly on the Space Shuttle external fuel tank. A novel apparatus to measure the effective thermal conductivity of rigid foam at temperatures ranging from 20 K to 300 K was developed and used to study three samples of NCFI 24-124 foam insulation. In preparation for measurement, the foam samples were either treated with a uniquely designed moisture absorption apparatus or different residual gases to study their impact on the effective thermal conductivity of the foam. The resulting data are compared to other measurements and mathematical models reported in the literature.

M. Barrios; S.W. Van Sciver

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "ionic-electronic conductivity miec" 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

Thermally conductive cementitious grout for geothermal heat pump systems  

DOE Patents (OSTI)

A thermally conductive cement-sand grout for use with a geothermal heat pump system. The cement sand grout contains cement, silica sand, a superplasticizer, water and optionally bentonite. The present invention also includes a method of filling boreholes used for geothermal heat pump systems with the thermally conductive cement-sand grout. The cement-sand grout has improved thermal conductivity over neat cement and bentonite grouts, which allows shallower bore holes to be used to provide an equivalent heat transfer capacity. In addition, the cement-sand grouts of the present invention also provide improved bond strengths and decreased permeabilities. The cement-sand grouts can also contain blast furnace slag, fly ash, a thermoplastic air entraining agent, latex, a shrinkage reducing admixture, calcium oxide and combinations thereof.

Allan, Marita (Old Field, NY)

2001-01-01T23:59:59.000Z

302

Multi-rate flowing Wellbore electric conductivity logging method  

SciTech Connect

The flowing wellbore electric conductivity logging method involves the replacement of wellbore water by de-ionized or constant-salinity water, followed by constant pumping with rate Q, during which a series of fluid electric conductivity logs are taken. The logs can be analyzed to identify depth locations of inflow, and evaluate the transmissivity and electric conductivity (salinity) of the fluid at each inflow point. The present paper proposes the use of the method with two or more pumping rates. In particular it is recommended that the method be applied three times with pumping rates Q, Q /2, and 2Q. Then a combined analysis of the multi-rate data allows an efficient means of determining transmissivity and salinity values of all inflow points along a well with a confidence measure, as well as their inherent or far-field pressure heads. The method is illustrated by a practical example.

Tsang, Chin-Fu; Doughty, Christine

2003-04-22T23:59:59.000Z

303

The State of Water in Proton Conducting Membranes  

SciTech Connect

The research carried out under grant No. DE-FG02-07ER46371, "The State of Water in Proton Conducting Membranes", during the period June 1, 2008 -May 31, 2010 was comprised of three related parts. These are: 1. An examination of the state of water in classical proton conduction membranes with the use of deuterium T1 NMR spectroscopy (Allcock and Benesi groups). 2. A dielectric relaxation examination of the behavior of water in classical ionomer membranes (Macdonald program). 3. Attempts to synthesize new proton-conduction polymers and membranes derived from the polyphosphazene system. (Allcock program) All three are closely related, crucial aspects of the design and development of new and improved polymer electrolyte fuel cell membranes on which the future of fuel cell technology for portable applications depends.

Allcock, Harry R., Benesi, Alan, Macdonald, Digby, D.

2010-08-27T23:59:59.000Z

304

NNSA conducts training in Israel | National Nuclear Security Administration  

National Nuclear Security Administration (NNSA)

training in Israel | National Nuclear Security Administration training in Israel | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Continuing Management Reform Countering Nuclear Terrorism About Us Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations Media Room Congressional Testimony Fact Sheets Newsletters Press Releases Speeches Events Social Media Video Gallery Photo Gallery NNSA Archive Federal Employment Apply for Our Jobs Our Jobs Working at NNSA Blog Home > NNSA Blog > NNSA conducts training in Israel NNSA conducts training in Israel Posted By Office of Public Affairs NNSA earlier this month conducted a training course on Consequence Management (I-CM) in Israel. The training, held in the Soreq Nuclear

305

CRAD, Conduct of Operations - Oak Ridge National Laboratory High Flux  

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

Reactor Contractor ORR Reactor Contractor ORR CRAD, Conduct of Operations - Oak Ridge National Laboratory High Flux Isotope Reactor Contractor ORR February 2007 A section of Appendix C to DOE G 226.1-2 "Federal Line Management Oversight of Department of Energy Nuclear Facilities." Consists of Criteria Review and Approach Documents (CRADs) used for a February, 2007 assessment of the Conduct of Operations Program portion of an Operational Readiness Review of the Oak Ridge National Laboratory, High Flux Isotope Reactor. CRADs provide a recommended approach and the types of information to gather to assess elements of a DOE contractor's programs. CRAD, Conduct of Operations - Oak Ridge National Laboratory High Flux Isotope Reactor Contractor ORR More Documents & Publications

306

Microsoft Word - S0162200_VariationHydraulicConductivity-PRB.doc  

Office of Legacy Management (LM)

GJ803-2005 GJ803-2005 ESL-RPT-2005-01 Variation in Hydraulic Conductivity Over Time at the Monticello Permeable Reactive Barrier February 2005 Work Performed by S.M. Stoller Corporation under DOE Contract No. DE-AC01-02GJ79491 for the U.S. Department of Energy Office of Legacy Management, Grand Junction, Colorado U.S. Department of Energy Variation in Hydraulic Conductivity Over Time at the Monticello Permeable Reactive Barrier February 2005 Doc. No. S0162200 Page v Contents Executive Summary...................................................................................................................... vii 1.0 Introduction ...........................................................................................................................

307

Microsoft Word - S0162200_VariationHydraulicConductivity-PRB.doc  

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

GJ803-2005 GJ803-2005 ESL-RPT-2005-01 Variation in Hydraulic Conductivity Over Time at the Monticello Permeable Reactive Barrier February 2005 Work Performed by S.M. Stoller Corporation under DOE Contract No. DE-AC01-02GJ79491 for the U.S. Department of Energy Office of Legacy Management, Grand Junction, Colorado U.S. Department of Energy Variation in Hydraulic Conductivity Over Time at the Monticello Permeable Reactive Barrier February 2005 Doc. No. S0162200 Page v Contents Executive Summary...................................................................................................................... vii 1.0 Introduction ...........................................................................................................................

308

Electronically conductive polymer binder for lithium-ion battery electrode  

DOE Patents (OSTI)

A family of carboxylic acid group containing fluorene/fluorenon copolymers is disclosed as binders of silicon particles in the fabrication of negative electrodes for use with lithium ion batteries. These binders enable the use of silicon as an electrode material as they significantly improve the cycle-ability of silicon by preventing electrode degradation over time. In particular, these polymers, which become conductive on first charge, bind to the silicon particles of the electrode, are flexible so as to better accommodate the expansion and contraction of the electrode during charge/discharge, and being conductive promote the flow battery current.

Liu, Gao; Xun, Shidi; Battaglia, Vincent S; Zheng, Honghe

2014-10-07T23:59:59.000Z

309

Conductivity fuel cell collector plate and method of fabrication  

DOE Patents (OSTI)

An improved method of manufacturing a PEM fuel cell collector plate is disclosed. During molding a highly conductive polymer composite is formed having a relatively high polymer concentration along its external surfaces. After molding the polymer rich layer is removed from the land areas by machining, grinding or similar process. This layer removal results in increased overall conductivity of the molded collector plate. The polymer rich surface remains in the collector plate channels, providing increased mechanical strength and other benefits to the channels. The improved method also permits greater mold cavity thickness providing a number of advantages during the molding process.

Braun, James C. (Juno Beach, FL)

2002-01-01T23:59:59.000Z

310

Electrostatic Discharge Sensitivity and Electrical Conductivity of Composite Energetic Materials  

SciTech Connect

Composite energetic material response to electrical stimuli was investigated and a correlation between electrical conductivity and ignition sensitivity was examined. The composites consisted of micrometer particle aluminum combined with another metal, metal oxide, or fluoropolymer. Of the nine tested mixtures, aluminum with copper oxide was the only mixture to ignite by electrostatic discharge with minimum ignition energy (MIE) of 25 mJ and an electrical conductivity of 1246.25 nS; two orders of magnitude higher than the next composite. This study showed a similar trend in MIE for ignition triggered by a discharged spark compared with a thermal hot wire source.

Michael A. Daniels; Daniel J. Prentice; Chelsea Weir; Michelle L. Pantoya; Gautham Ramachandran; Tim Dallas

2013-02-01T23:59:59.000Z

311

Electrically conducting porphyrin and porphyrin-fullerene electropolymers  

DOE Patents (OSTI)

Compounds with aryl ring(s) at porphyrin meso position(s) bearing an amino group in position 4 relative to the porphyrin macrocycle, and at least one unsubstituted 5 (hydrogen-bearing) meso position with the 10-, 15-, and/or 20-relationship to the aryl ring bearing the amino group, and metal complexes thereof, feature broad spectral absorption throughout the visible region. These compounds are electropolymerized to form electrically conducting porphyrin and porphyrin-fullerene polymers that are useful in photovoltaic applications. The structure of one such electrically conducting porphyrin polymer is shown below. ##STR00001##

Gust, Jr., John Devens; Liddell, Paul Anthony; Gervaldo, Miguel Andres; Bridgewater, James Ward; Brennan, Bradley James; Moore, Thomas Andrew; Moore, Ana Lorenzelli

2014-03-11T23:59:59.000Z

312

Creation and Impairment of Hydraulic Fracture Conductivity in Shale Formations  

E-Print Network (OSTI)

Multi-stage hydraulic fracturing is the key to the success of many shale gas and shale oil reservoirs. The main objectives of hydraulic fracturing in shale are to create artificial fracture networks that are conductive for oil and gas flow...

Zhang, Junjing

2014-07-10T23:59:59.000Z

313

Physical properties of Li ion conducting polyphosphazene based polymer electrolytes  

SciTech Connect

We report a systematic study of the transport properties and the underlying physical chemistry of some polyphosphazene (PPhz)-based polymer electrolytes. We synthesized MEEP and variants which employed mixed combinations of different length oxyethylene side-chains. We compare the conductivity and ion-ion interactions in polymer electrolytes obtained with lithium triflate and lithium bis(trifluoromethanesulfonyl)imide (TFSI) salts added to the polymer. The combination of the lithium imide salt and MEEP yields a maximum conductivity of 8 x 10{sup -5} {Omega}{sup -1} cm{sup -1} at room temperature at a salt loading of 8 monomers per lithium. In one of the mixed side-chain variations, a maximum conductivity of 2 x 10{sup -4} {Omega}{sup -1} cm{sup -1} was measured at the same molar ratio. Raman spectral analysis shows some ion aggregation and some polymer - ion interactions in the PPhz-LiTFSI case but much less than observed with Li CF{sub 3}SO{sub 3}. A sharp increase in the Tg as salt is added corresponds to concentrations above which the conductivity significantly decreases and ion associations appear.

Sanderson, S.; Zawodzinski, T.; Hermes, R.; Davey, J.; Dai, Hongli

1996-12-31T23:59:59.000Z

314

Nanoscale Current Imaging of the Conducting Channels in Proton  

E-Print Network (OSTI)

must traverse the aqueous domains of the PEM and reach the catalyst at the cathode area of a proton exchange membrane fuel cell (PEMFC) is investigated using conductive probe atomic force microscopy (CP-AFM). A platinum-coated AFM tip is used as a nanoscale cathode in an operating

Buratto, Steve

315

Effective Thermal Conductivity of Graded Nanocomposites with Interfacial Thermal  

E-Print Network (OSTI)

.M. Yin", G. H. Paulino", W.G. Buttlar", and L.Z. Sun'' '^Department of Civil and Environmental the effective thermal conductivity distribution in functionally graded materials (FGMs) considering the Kapitza is developed to derive the averaged heat flux field of the particle phase. Then the temperature gradient can

Paulino, Glaucio H.

316

Technology Transfer Expansion Planned UTCA is conducting a major project  

E-Print Network (OSTI)

Technology Transfer Expansion Planned UTCA is conducting a major project to evaluate and extend its technology transfer activities (UTCA project 03217). Steven Jones and David Eckhoff of UAB are working to expand the current technology transfer program to showcase the successes of the UTCA projects. Samples

Carver, Jeffrey C.

317

Benchmark density functional theory calculations for nanoscale conductance  

E-Print Network (OSTI)

Benchmark density functional theory calculations for nanoscale conductance M. Strange,a I. S. The transmission functions are calculated using two different density functional theory methods, namely state density functional theory DFT . The resulting NEGF- DFT formalism provides a numerically efficient

Thygesen, Kristian

318

04.10 1 Ethics and Conduct REGENTS' POLICY  

E-Print Network (OSTI)

04.10 1 Ethics and Conduct REGENTS' POLICY PART IV � HUMAN RESOURCES Chapter 04.10 - Ethics comply with the applicable provisions of AS 39.52 (Alaska Executive Branch Ethics Act). To the extent, leases or loans. Employees should contact the university's designated ethics supervisor for additional

Pantaleone, Jim

319

Responsible Conduct of Research Information Session March 2, 2011  

E-Print Network (OSTI)

reports � Training plan is subject to NSF review � All peers polled, have chosen to use the CITI online practices and responsible authorship, � peer review, � collaborative science, and � conflicts of interests. � Increased public and regulatory scrutiny on the institution's ability to conduct research with integrity

Lipson, Michal

320

Thermal Conductivity of Composites Under Di erent Heating Scenarios  

E-Print Network (OSTI)

Thermal Conductivity of Composites Under Di#11;erent Heating Scenarios H.T. Banks #3; , J.H. Hogan of composites under three di#11;erent heating scenarios: (i) a laser pulse heat source, (ii) a preheated composite sample, and (iii) a continuous heat source. 1 Introduction Adhesives such as epoxies, gels

Note: This page contains sample records for the topic "ionic-electronic conductivity miec" 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

Conducting Cybersecurity Research Legally and Ethically Aaron J. Burstein  

E-Print Network (OSTI)

Conducting Cybersecurity Research Legally and Ethically Aaron J. Burstein University of California cybersecurity are not outright prohibitions but rather the difficulty of determining which of a large set by explaining the areas of law that are most gener- ally applicable to cybersecurity researchers and offering

Paxson, Vern

322

THERMAL CONDUCTIVITY OF POWDER INSULATIONS FOR CRYOGENIC STORAGE  

E-Print Network (OSTI)

THERMAL CONDUCTIVITY OF POWDER INSULATIONS FOR CRYOGENIC STORAGE VESSELS Y. S. Choi1 '3 , M. N), powder insulation, and foam insulation, are used in the cryogenic storage vessels. Among CP823, Advances in Cjyogenie Engineering: Transactions of the Cryogenic Engineering Conference - CEC, Vol. 51, edited by J. G

Chang, Ho-Myung

323

Remarkable Reduction of Thermal Conductivity in Silicon Nanotubes  

E-Print Network (OSTI)

localization, thermoelectric material T hermoelectric (TE) materials can provide electricity when subjected materials can be characterized by the dimen- sionless thermoelectric figure of merit ZT ) S2 T/, where S to be responsible for the reduction of thermal conductivity. Our study suggests SiNT is a promising thermoelectric

Li, Baowen

324

Transparent and conductive paper from nanocellulose Liangbing Hu,a  

E-Print Network (OSTI)

such as displays, touch screens and interactive paper. We have also successfully demonstrated an organic solar cell light scattering in the forward direction, which is very useful for solar cell applications layer of ITO, the conductive nanocellulose paper can be used as a substrate for making organic solar

Fan, Shanhui

325

Conducting polymer and hydrogenated amorphous silicon hybrid solar cells  

E-Print Network (OSTI)

November 2005 An organic-inorganic hybrid solar cell with a p-i-n stack structure has been investigated for their potential in electronic devices such as organic light emitting diodes OLEDs , solar cells, photode- tectorsConducting polymer and hydrogenated amorphous silicon hybrid solar cells Evan L. Williams

Schiff, Eric A.

326

Microscopic Conductivity Distributions of Non--Interacting Fermions  

E-Print Network (OSTI)

measure 0 d#. Therefore, electric fields generally produce heat in such systems. In fact, the conductivity production is the classical work performed by electric fields on the system in presence of currents of which describes the resistivity of the system. This leads to Joule's law, i.e., the heat produced

327

CRAD, Conduct of Operations- Idaho MF-628 Drum Treatment Facility  

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

A section of Appendix C to DOE G 226.1-2 "Federal Line Management Oversight of Department of Energy Nuclear Facilities." Consists of Criteria Review and Approach Documents (CRADs) used for a May, 2007 readiness assessment of the Conduct of Operations program at the Advanced Mixed Waste Treatment Project.

328

CRAD, Conduct of Operations- Idaho Accelerated Retrieval Project Phase II  

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

A section of Appendix C to DOE G 226.1-2 "Federal Line Management Oversight of Department of Energy Nuclear Facilities." Consists of Criteria Review and Approach Documents (CRADs) used for a February, 2006 Commencement of Operations assessment of the Conduct of Operations program at the Idaho Accelerated Retrieval Project Phase II.

329

Self-assessment of conduct of operations in safe shutdown  

SciTech Connect

This report documents a self-assessment of the Conduct of Operations Program as it applies to safe shutdown activities at the Pinellas Plant. The self-assessment was performed in two parts: Part one consisted of a review to determine the adequacy of programs, plans and procedures. Part two assessed the effectiveness of the implementation of programs, plans and procedures.

Not Available

1995-01-01T23:59:59.000Z

330

Dendritic Ca2 -Activated K Conductances Regulate Electrical  

E-Print Network (OSTI)

Dendritic Ca2 -Activated K Conductances Regulate Electrical Signal Propagation in an Invertebrate studies revealed that backpropagating Na spikes and synaptically evoked EPSPs caused Ca2 entry through low-voltage-activated Ca2 channels that are distrib- uted throughout the neurites. Voltage-clamp recordings from the soma

Wessel, Ralf

331

Crumpled graphene: Conductive inks made by startup company Vorbeck  

E-Print Network (OSTI)

Crumpled graphene: Conductive inks made by startup company Vorbeck Materials contain crumpled graphene. This atomic-force microscope image is colorized to show the topography of a piece of graphene Technology Review in English | en Español | auf Deutsch | in Italiano | Bringing Graphene to Market

Aksay, Ilhan A.

332

Conductive inks for metalization in integrated polymer microsystems  

DOE Patents (OSTI)

A system of metalization in an integrated polymer microsystem. A flexible polymer substrate is provided and conductive ink is applied to the substrate. In one embodiment the flexible polymer substrate is silicone. In another embodiment the flexible polymer substrate comprises poly(dimethylsiloxane).

Davidson, James Courtney (Livermore, CA); Krulevitch, Peter A. (Pleasanton, CA); Maghribi, Mariam N. (Livermore, CA); Benett, William J. (Livermore, CA); Hamilton, Julie K. (Tracy, CA); Tovar, Armando R. (San Antonio, TX)

2006-02-28T23:59:59.000Z

333

Low resolution conductivity estimation to improve source localization  

E-Print Network (OSTI)

source analysis in the brain is sensitive to the conductivities of head tissues, which vary across of 10-8 ) [4]. Fig. 1. Realistic four compartment (scalp, skull, CSF, brain) finite element head model Neuroscience, University of California San Diego, USA Abstract. Bioelectric source localization in the brain

Utah, University of

334

Mode dependent lattice thermal conductivity of single layer graphene  

SciTech Connect

Molecular dynamics simulation is performed to extract the phonon dispersion and phonon lifetime of single layer graphene. The mode dependent thermal conductivity is calculated from the phonon kinetic theory. The predicted thermal conductivity at room temperature exhibits important quantum effects due to the high Debye temperature of graphene. But the quantum effects are reduced significantly when the simulated temperature is as high as 1000?K. Our calculations show that out-of-plane modes contribute about 41.1% to the total thermal conductivity at room temperature. The relative contribution of out-of-plane modes has a little decrease with the increase of temperature. Contact with substrate can reduce both the total thermal conductivity of graphene and the relative contribution of out-of-plane modes, in agreement with previous experiments and theories. Increasing the coupling strength between graphene and substrate can further reduce the relative contribution of out-of-plane modes. The present investigations also show that the relative contribution of different mode phonons is not sensitive to the grain size of graphene. The obtained phonon relaxation time provides useful insight for understanding the phonon mean free path and the size effects in graphene.

Wei, Zhiyong; Yang, Juekuan; Bi, Kedong; Chen, Yunfei, E-mail: yunfeichen@seu.edu.cn [Jiangsu Key Laboratory for Design and Manufacture of Micro/Nano Biomedical Instruments and School of Mechanical Engineering, Southeast University, Nanjing 210096 (China)

2014-10-21T23:59:59.000Z

335

Heat conduction in relativistic systems: alternatives and perspectives  

E-Print Network (OSTI)

The non-equilibrium thermodynamics of relativistic systems have a rich phenomenology. The simplest phenomenon in the class of dissipative processes is that of heat. This letter presents a brief summary of the efforts made to tackle the problem of relativistic heat conduction. In particular, we focus on the multi-fluid approach to relativistic dissipation.

C. S. Lopez-Monsalvo

2010-11-30T23:59:59.000Z

336

Galaxy motions, turbulence and conduction in clusters of galaxies  

Science Journals Connector (OSTI)

......g-modes are excited (since most of the energy in g-modes are in the largest length-scales...Since conduction is only a part of the energy budget, there is no reason for the stabilized...Federrath C., 2009, inPogorelov N. V., Audit E., Colella P., Zank G. P., eds......

M. Ruszkowski; S. Peng Oh

2011-06-21T23:59:59.000Z

337

Dependence of single molecule junction conductance on molecular conformation  

E-Print Network (OSTI)

1 Dependence of single molecule junction conductance on molecular conformation Latha Venkataraman1 of a single metal-molecule-metal junction depends not only on the chemical nature of the molecule used in unimolecular devices. Here, using amine link groups13 to form single molecule junctions, we show a clear

Hone, James

338

Stanford University School of Medicine Responsible Conduct of Research  

E-Print Network (OSTI)

Stanford University School of Medicine Responsible Conduct of Research Session 6: Tissue Use Makeup Cases Please choose one case and write a 3-5 page paper that answers the questions that accompany many years gathering tissue samples from women with breast cancer. All donors gave permission

339

A simple Conducting Wire for Decoupling Neighbouring Antennas  

E-Print Network (OSTI)

and good resistance to the marine environment. This paper is dedicated to the installation of antennas separation between them. Looking for elementary solutions we propose to use a simple conducting wire rather is described as a lumped element circuit composed of a capacitance in series with a resistance

Paris-Sud XI, Université de

340

Maxwell's approach to effective conductivity and its limitations  

Science Journals Connector (OSTI)

......effective conductivity tensor does not contain the differences...form of the limit (17) which does not exist for some distributions...SCMs. So, the divergent sum does really diverge for some distributions...American Geophysical Union Handbook of Physical Constants (eds......

V. Mityushev; N. Rylko

2013-05-01T23:59:59.000Z

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


341

The thermal conductivity of silicon nitride with molybdenum disilicide additions  

SciTech Connect

Room-temperature thermal conductivity has been measured for a series of silicon nitride (Si{sub 3}N{sub 4}) matrix composites with molybdenum disilicide (MoSi{sub 2}) additions of 2, 5 10, 25 and 50 wt. %. Included in these measurements were a pure MoSi{sub 2} sample and a Si{sub 3}N{sub 4} sample containing only sintering aids. Aluminum oxide (Al{sub 2}O{sub 3}) and yttrium oxide (Y{sub 2}O{sub 3}) were added as the sintering aids, at approximately 6 and 2 respectively. When the amount of MoSi{sub 2} was increased to greater than 10 wt. %, the amount of the sintering aids necessary to densify the composite was decreased. No sintering aids were added to the pure MoSi{sub 2} sample. Thermal conductivities of the Si{sub 3}N{sub 4} sample without MoSi{sub 2} and the pure MoSi{sub 2} sample wee 36 W/m.K and 52 W/m.K respectively, which agree very well with the literature values for similar materials. No statistically significant changes were observed in the thermal conductivity for those samples containing up to 10 wt. % MoSi{sub 2}. However, between 10 and 25 wt. % MoSi{sub 2} there was a dramatic decrease in the thermal conductivity from 37 to 20.9 W/m.K. The thermal conductivity then increased steadily with further additions of MoSi{sub 2} up to 52 W/m.K for the pure MoSi{sub 2} specimen.

Beecher, S.C.; Dinwiddie, R.B.; Abeel, A.M.; Lowden, R.A.

1993-12-31T23:59:59.000Z

342

Protocol and cell responses in three-dimensional conductive collagen gel scaffolds with conductive polymer nanofibres for tissue regeneration  

Science Journals Connector (OSTI)

...cellulose membrane dialysis tubing (MW 12...Sigma-Aldrich). Dialysis was performed...with two fresh water changes. Chemical...transmission electron microscope...by enzymatic treatment with 1 0.05...in deionized water under magnetic...day. 2.5. Electrical conductivity...

2014-01-01T23:59:59.000Z

343

Structure of fast shocks in the presence of heat conduction  

SciTech Connect

There are three types of magnetohydrodynamic (MHD) shocks: the fast shock, intermediate shock, and slow shock. The structure of slow shocks and intermediate shocks in the presence of heat conduction has been studied earlier [C. L. Tsai, R. H. Tsai, B. H. Wu, and L. C. Lee, Phys. Plasmas 9, 1185 (2002); C. L. Tsai, B. H. Wu, and L. C. Lee, Phys. Plasmas 12, 82501 (2005)]. Based on one-dimensional MHD numerical simulations with a heat conduction term, the evolution and structure of fast shocks are studied. The fast shock will form a foreshock in the presence of heat conduction. The foreshock is formed due to the heat flow from downstream to upstream and located in the immediate upstream of the main shock. In the steady state, the value of diffusion velocity V{sub d} in the foreshock is found to nearly equal the upstream convection velocity in the fast shock frame. It is found that the density jump across the main shock in high Mach number case can be much larger than 4 in the early simulation time. However the density jump will gradually evolve to a value smaller than 4 at steady state. By using the modified Rankine-Hugoniot relations with heat flux, the density jump across the fast shock is examined for various upstream parameters. The results show that the calculated density jump with heat flux is very close to the simulation value and the density jump can far exceed the maximum value of 4 without heat conduction. The structure of foreshock and main shock is also studied under different plasma parameters, such as the heat conductivity K{sub 0}, the ratio of upstream plasma pressure to magnetic pressure {beta}{sub 1}, Alfven Mach number M{sub A1}, and the angle {theta}{sub 1} between shock normal and magnetic field. It is found that as the upstream shock parameters K{sub 0}, {beta}{sub 1}, and M{sub A1} increase or {theta}{sub 1} decreases, the width of foreshock L{sub d} increases. The present results can be applied to fast shocks in the solar corona, solar wind, and magnetosphere, in which the heat conduction effects are important.

Tsai, C. L.; Chen, H. H.; Wu, B. H.; Lee, L. C. [Earth Dynamic System Research Center and Department of Physics, National Cheng Kung University, Tainan, 701 Taiwan and Institute of Space Science, National Central University, Jhongli, 320 Taiwan (China); Department of Physics, National Cheng Kung University, Tainan, 701 Taiwan and Institute of Space Science, National Central University, Jhongli, 320 Taiwan (China); National Space Organization, Hsinchu, 300 Taiwan (China); Institute of Space Science, National Central University, Jhongli, 320 Taiwan (China)

2007-12-15T23:59:59.000Z

344

Publications from Research Conducted at SNAP | ORNL Neutron Sciences  

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

Publications from Research Conducted at SNAP Publications from Research Conducted at SNAP 2013 Publications Boehler R., Guthrie M., Molaison J.J., dos Santos A. M., Sinogeikin S., Machida S., Pradhan N., Tulk C. A., "Large-volume diamond cells for neutron diffraction above 90 GPa", High Pressure Research 33, 546-554 (2013). Guthrie M., Boehler R., Tulk C. A., Molaison J. J., dos Santos A. M., Li K., Hemley R. J., "Neutron diffraction observations of interstitial protons in dense ice", Proceedings of the National Academy of Sciences of the USA 110, 10552-10556 (2013). Hirai S., dos Santos A. M., Shapiro M. C., Molaison J. J., Pradhan N., Guthrie M., Tulk C. A., Fisher I. R., Mao W. L., "Giant atomic displacement at a magnetic phase transition in metastable Mn3O4", Physical

345

temperature measurements conducted by the Gulf Coast Carbon Center  

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

temperature measurements conducted by the Gulf Coast Carbon Center temperature measurements conducted by the Gulf Coast Carbon Center (GCCC) at the Bureau of Economic Geology, University of Texas at Austin. The effort will examine the instrumentation necessary to ensure safe CO 2 storage by verifying CO 2 retention in the injection zone, quantify storage capacity, and quantify near- and far-field pressure response to injection. SECARB began injecting CO 2 on July 15, 2008, at a depth of 10,300 feet for enhanced oil recovery (EOR) at the Cranfield oilfield near Natchez, Mississippi. The naturally occurring CO 2 is obtained from Jackson Dome and transported by pipeline to the injection site. SECARB plans to inject CO

346

Publications from Research Conducted at IMAGING | ORNL Neutron Sciences  

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

Publications from Research Conducted at IMAGING Publications from Research Conducted at IMAGING 2013 Publications Barnett A. K., Cox M. N., Crow L., Diawara Y., Funk L. L., Hayward Jason P., Menhard K., Sedov V. N., "A high count rate neutron beam monitor for neutron scattering facilities", IEEE Transactions on Nuclear Science 60, 668-670 (2013). Bingham P., Polsky Y., Anovitz L., "Neutron imaging for geothermal energy systems", Proceedings of the SPIE 8661, 86610K (2013). Kang M., "Hydraulic properties of variably-saturated porous media determined using quantitative neutron radiography", University of Tennessee , (2013). Kang M., Bilheux H. Z., Voisin S., Cheng C. L., Perfect E., Horita J., Warren J. M., "Water calibration measurements for neutron radiography: application to water content quantification in porous media", Nuclear

347

Planning and Conduct of Operational Readiness Reviews (ORR)  

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

DOE-STD-3006-2000 DOE-STD-3006-2000 June 2000 Superseding DOE-STD-3006-95 November 1995 DOE STANDARD PLANNING AND CONDUCT OF OPERATIONAL READINESS REVIEWS (ORR) U.S. Department of Energy AREA OPER Washington, D.C. 20585 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. NOT MEASUREMENT SENSITIVE This document has been reproduced directly from the best available copy. Available to DOE and DOE contractors from ES&H Technical Information Services, U.S. Department of Energy, (800) 473-4375, fax: (301) 903-9823 Available to the public from the U.S. Department of Commerce, Technology Administration, National Technical Information Service, Springfield, VA 22161; (703) 605-6000. DOE-STD-3006-2000 iii PLANNING AND CONDUCT OF OPERATIONAL READINESS REVIEWS (ORR)

348

Publications from Research Conducted at WAND | ORNL Neutron Sciences  

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

Publications from Research Conducted at WAND Publications from Research Conducted at WAND 2013 Publications Durand A. M., Belanger D. P., Booth C. H., Ye F., Chi S., Fernandez-Baca J. A., Bhat M., "Magnetism and phase transitions in LaCoO3", Journal of Physics: Condensed Matter 25, 382203 (2013). Kobayashi R., Kaneko K., Wakimoto S., Chi S., Sanada N., Watanuki R., Suzuki K., "Powder neutron diffraction study of HoCoGa", Journal of the Korean Physical Society 63, 337-340 (2013). Retuerto M., Li M. R., Ignatov A., Croft M., Ramanujachary K. V., Chi S., Hodges J. P., Dachraoui W., Hadermann J., Tran T. T., Halasyamani P. S., Grams C. P., Hemberger J., Greenblatt M., "Polar and magnetic layered A-site and rock salt B-site-ordered NaLnFeWO6 (Ln = La, Nd) perovskites", Inorganic Chemistry 52, 12482-12491 (2013).

349

Publications from Research Conducted at MR | ORNL Neutron Sciences  

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

Publications from Research Conducted at MR Publications from Research Conducted at MR 2013 Publications Erickson M. J., "Surface and interface effects in nanoscopic metallic spin transport devices", University of Minnesota , (2013). Ji N., Lauter V., Zhang X., Ambaye H., Wang J.-P., "Strain induced giant magnetism in epitaxial Fe16N2 thin film", Applied Physics Letters 102, 072411 (2013). Jiang C. Y., Tong X., Brown D. R., Lee W. T., Ambaye H., Craig J. W., Crow L., Culbertson H., Goyette R., Graves-Brook M. K., Hagen M. E., Kadron B., Lauter V., McCollum L. W., Robertson J. L., Winn B., Vandegrift A. E., "Polarized 3He neutron spin filters at Oak Ridge National Laboratory", Physics Procedia 42, 191-199 (2013). Ke X., Belenky L. J., Lauter V., Ambaye H., Bark C. W., Eom C. B.,

350

Publications from Research Conducted at CG-1 | ORNL Neutron Sciences  

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

Publications from Research Conducted at CG-1 Publications from Research Conducted at CG-1 2013 Publications Wang C. L., Clonts L. G., Diawara Y., Hannan B. W., Hodges J. P., "Elimination of ghosting artifacts from wavelength-shifting fiber neutron detectors", Review of Scientific Instruments 84, 013308 (2013). 2011 Publications Crow L., Robertson L., Bilheux H., Fleenor M., Iverson E., Tong X., Stoica D., Lee W. T., "The CG1 instrument development test station at the High Flux Isotope Reactor", Nuclear Instruments and Methods in Physics Research A 634, S71-S74 (2011). 2010 Publications Bilheux H. Z., Horita J., Warren J. M., Perfect E., Kang M., "Neutron imaging of fluids in plantsoil- rock systems using the ORNL/HFIR CG-1 beamline", Goldschmidt Abstracts B, Geochimica et Cosmochimica Acta

351

Access Handbook - Conducting Health Studies at Department of Energy Sites  

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

HDBK-1209-2012 HDBK-1209-2012 DOE HANDBOOK Access Handbook - Conducting Health Studies at Department of Energy Sites U.S. Department of Energy AREA OCHS Washington, D.C. 20585 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. NOT MEASUREMENT SENSITIVE DOE-HDBK-1209-2012 i This Department of Energy (DOE) Handbook provides guidelines for the successful conduct of health studies at DOE sites. The Handbook does not establish requirements and any requirements that must be met are explicitly stated to be requirements in a DOE requirements document. This document is available on the Department of Energy Technical Standards Program Web Page at http://www.hss.energy.gov/nuclearsafety/techstds/ DOE-HDBK-1209-2012

352

recovery (EOR). Conducted by the Southeast Regional Carbon  

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

recovery (EOR). Conducted by the Southeast Regional Carbon recovery (EOR). Conducted by the Southeast Regional Carbon Sequestration Partnership (SECARB), one of seven DOE Regional Carbon Sequestration Partnerships (RCSPs), the "Anthropogenic Test" uses CO 2 from the newly constructed post-combustion CO 2 -capture facility at Alabama Power's 2,657-megawatt (MW) Barry Electric Generating Plant. Located in southwest Alabama, the project will help demonstrate the feasibility of carbon capture, utilization, and storage (CCUS) by diverting a small amount of flue gas from Plant Barry (equivalent to amount produced when generating 25 MW of electricity) and capturing it using Mitsubishi Heavy Industries' advanced amine process to produce a nearly pure stream of CO

353

Publications from Research Conducted at FCD | ORNL Neutron Sciences  

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

Publications from Research Conducted at FCD Publications from Research Conducted at FCD 2013 Publications Cao H., Chakoumakos B. C., Chen X., Yan J., McGuire M. A., Yang H., Custelcean R., Zhou H., Singh D. J., Mandrus D., "Origin of the phase transition in IrTe2: structural modulation and local bonding instability", Physical Review B: Condensed Matter and Materials Physics 88, 115122 (2013). Fancher C. M., "Texture and anisotropy in the bismuth sodium titanate system", Purdue University , (2013). Ghimire N. J., "Complex magnetism in noncentrosymmetric magnets", University of Tennessee , (2013). Kiswandhi A., Brooks J. S., Cao H. B., Yan J. Q., Mandrus D., Jiang Z., Zhou H. D., "Competition between the structural phase transition and superconductivity in Ir1-xPtxTe2 as revealed by pressure effects", Physical

354

Publications from Research Conducted at POWGEN - ORNL Neutron Sciences  

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

Publications from Research Conducted at POWGEN Publications from Research Conducted at POWGEN 2013 Publications Bergstrom Jr. R., Wuttig M., Cullen J., Zavalij P., Briber R., Dennis C., Garlea V. O., Laver M., "Morphotropic phase boundaries in ferromagnets: Tb1-xDyxFe2 alloys", Physical Review Letters 111, 017203 (2013). Bessas D., Rushchanskii K. Z., Kachlik M., Disch S., Gourdon O., Bednarcik J., Maca K., Sergueev I., Kamba S., Lezaic M., Hermann R. P., "Lattice instabilities in bulk EuTiO3", Physical Review B: Condensed Matter and Materials Physics 88, 144308 (2013). Bridges C. A., Harrison K., Unocic R. R., Idrobo J.-C., Paranthaman M. P., Manthiram A., "Defect chemistry of phospho-olivine nanoparticles synthesized by a microwave-assisted solvothermal process", Journal of Solid

355

Ionically Conducting Membranes for Hydrogen Production and Separation  

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

IONICALLY CONDUCTING MEMBRANES IONICALLY CONDUCTING MEMBRANES FOR HYDROGEN PRODUCTION AND SEPARATION Presented by Tony Sammells Eltron Research Inc. Boulder, Colorado www.eltronresearch.com Presented at DOE Hydrogen Separations Workshop Arlington, Virginia September 8, 2004 ELTRON RESEARCH INC. TO BE DISCUSSED * Membranes for Hydrogen Production - Compositions - Feedstocks - Performance - Key Technical Hurdles * Membranes for Hydrogen Separation - Compositions - Ex Situ vs. In Situ WGS - Performance - Key Technical Hurdles ELTRON RESEARCH INC. OVERALL SCHEME FOR CONVERTING FEEDSTOCK TO HYDROGEN WITH SIMULTANEOUS CARBON DIOXIDE SEQUESTRATION Oxygen Transport Membrane Hydrogen Transport Membrane Natural Gas Coal Biomass Syngas CO/H 2 WGS H 2 O CO 2 /H 2 1618afs.dsf H 2 CO 2 ELTRON RESEARCH INC. INCENTIVES FOR OXYGEN TRANSPORT MEMBRANES FOR

356

Publications from Research Conducted at CTAX | ORNL Neutron Sciences  

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

Publications from Research Conducted at CTAX Publications from Research Conducted at CTAX 2013 Publications Hong T., Zhu L. Y., Ke X., Garlea V. O., Qiu Y., Nambu Y., Yoshizawa H., Zhu M., Granroth G. E., Savici A. T., Gai Z., Zhou and H.D., "Structural and magnetic properties in the quantum S=1/2 dimer system Ba3(Cr1-xVx)2O8 with site disorder", Physical Review B: Condensed Matter and Materials Physics 87, 144427 (2013). Ma J., Delaire O., May A. F., Carlton C. E., McGuire M. A., VanBebber L. H., Abernathy D. L., Ehlers G., Hong T., Huq A., Tian W., Keppens V. M., Shao-Horn Y., Sales B. C., "Glass-like phonon scattering from a spontaneous nanostructure in AgSbTe2", Nature Nanotechnology , (2013). Minnich A. J., "Naturally glassy crystals", Nature Nanotechnology 8, 392-393 (2013).

357

Publications from Research Conducted at VULCAN | ORNL Neutron Sciences  

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

Publications from Research Conducted at VULCAN Publications from Research Conducted at VULCAN 2013 Publications Benafan O., Noebe R. D., II S. A.Padula, Gaydosh D. J., Lerch B. A., Garg A., Bigelow G. S., An K., Vaidyanathan R., "Temperature dependent behavior of a polycrystalline NiTi shape memory alloy around the transformation regime", Scripta Materialia 68, 571-574 (2013). Bowman Jr. R. C., Payzant E. A., Wilson P. R., Pearson D. P., Ledovskikh A., Danilov D., Notten P. H.L., An K., Skorpenske H. D., Wood D. L., "Characterization and analyses of degradation and recovery of LaNi4.78Sn0.22 hydrides following thermal aging", Journal of Alloys and Compounds 580, S207-S210 (2013). Brice C. A., Hofmeister W. H., "Determination of bulk residual stresses in electron beam additivemManufactured aluminum", Metallurgical

358

NNSA Conducts Advanced Radiation Medical Training in Taiwan | National  

National Nuclear Security Administration (NNSA)

Radiation Medical Training in Taiwan | National Radiation Medical Training in Taiwan | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Continuing Management Reform Countering Nuclear Terrorism About Us Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations Media Room Congressional Testimony Fact Sheets Newsletters Press Releases Speeches Events Social Media Video Gallery Photo Gallery NNSA Archive Federal Employment Apply for Our Jobs Our Jobs Working at NNSA Blog Home > Media Room > Press Releases > NNSA Conducts Advanced Radiation Medical Training in Taiwan Press Release NNSA Conducts Advanced Radiation Medical Training in Taiwan Aug 16, 2013 WASHINGTON, D.C. - The National Nuclear Security Administration (NNSA)

359

Enforcement Guidance Supplement 98-01:Duration of Investigations Conducted  

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

Enforcement Guidance Supplement 98-01:Duration of Investigations Enforcement Guidance Supplement 98-01:Duration of Investigations Conducted Pursuant to 10 CFR 820.21; Purpose of Transcript Requirements Set Forth in 10 CFR 820.10 (d) Enforcement Guidance Supplement 98-01:Duration of Investigations Conducted Pursuant to 10 CFR 820.21; Purpose of Transcript Requirements Set Forth in 10 CFR 820.10 (d) The DOE Enforcement Handbook (1087-95) provides the Office of Enforcement and Investigation with the opportunity to issue interim clarifying guidance occasionally with respect to the processes to be used in this office (see Section 1.3- Interim Enforcement Guidance). In particular, it is important to assist contractors and others on the relationships between the requirements of Part 820 and the Enforcement Policy, 10 CFR 820, Appendix

360

Effective thermal conduction model for estimating global warming  

Science Journals Connector (OSTI)

This paper presents a simple way to approximate the dependence of the global mean air temperature at Earth’s surface on the atmospheric concentration of carbon dioxide. It treats the atmosphere as a blanket the effective thermal conductivity of which is a decreasing function of the amount of CO 2 present and does not involve the details of energy transport. The only data required are the CO 2 concentrations at the middle of the nineteenth and the end of the twentieth centuries and the shift in temperature that has occurred over that time. This elementary phenomenological energy-balance approach is well suited for undergraduate physics courses to illustrate thermal conduction and radiation by way of the very interesting and critically important example of greenhouse warming of Earth.

Anthony B. Wolbarst

1999-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "ionic-electronic conductivity miec" 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

Serpentine Thermal Coupling Between a Stream and a Conducting Body  

SciTech Connect

Here we document the effect of flow configuration on the heat transfer performance of a serpentine shaped stream embedded in a conducting solid. Several configurations with fixed volume of fluid are considered: U-shaped with varying spacing between the parallel portions of the U, serpentine shapes with three elbows, and conducting soil with several parallelepipedal shapes. We show that the spacing must be greater than a critical value in order for the heat transfer density of the stream-solid configuration to be the highest that it can be. Spacings larger than this critical value do not yield improvements in heat transfer density. We also show that even though the heat transfer is time dependent, the stream-solid configuration has an effective number of heat transfer units Ntu that is nearly constant in time. The larger Ntu values correspond to the configurations with greater heat transfer density.

Kobayashi, H.; Lorente, S.; Anderson, R.; Bejan, A.

2012-02-15T23:59:59.000Z

362

Identification of building applications for a variable-conductance insulation  

SciTech Connect

Recent experiments have confirmed the feasibility of controllable, reversible disabling of a vacuum insulation panel, which may result in the development of energy-efficient building envelope components. These components could extend the managed energy exchange through the building envelope from about 30% (typical with fenestration systems in commercial buildings), to as much as 90% of the gross wall and roof areas. Further investigation will be required to optimized the thermal response and the magnitude of the R-value swing (from a difference between insulating and conducting insulating values of 4 to as high as a factor of 100). The potential for energy reduction by using the variable-conductance insulation in the building envelope is discussed, and other potential building applications are mentioned.

Potter, T.F. [National Renewable Energy Lab., Golden, CO (United States); Tuluca, A. [Winter (Steven) Associates, Inc., New York, NY (United States)

1992-07-01T23:59:59.000Z

363

Spin-wave-induced correction to the conductivity of ferromagnets  

Science Journals Connector (OSTI)

We calculate the correction to the conductivity of a disordered ferromagnetic metal due to spin-wave-mediated electron-electron interactions. This correction is the generalization of the Altshuler-Aronov correction to spin-wave-mediated interactions. We derive a general expression for the conductivity correction to lowest order in the spin-wave-mediated interaction and for the limit that the exchange splitting ? is much smaller than the Fermi energy. For a “clean” ferromagnet with ??el/??1, with ?el being the mean time for impurity scattering, we find a correction ????T5/2 at temperatures T above the spin-wave gap. In the opposite, “dirty” limit, ??el/??1, the correction is a nonmonotonous function of temperature.

J. Danon; A. Ricottone; P. W. Brouwer

2014-07-11T23:59:59.000Z

364

Conducting operations at the Solid Waste Management Department at WRSC  

SciTech Connect

Conduct of Operations, which is one of the entities within the Westinghouse Savannah River Company`s Performance Improvement Plan, is based on commercial nuclear power industry standards that were developed to improve operations in that industry. Implementation and compliance to the Conduct of Operations requirements are enhancing the Site`s Mission: To serve the national interest of the United States by safely producing nuclear materials while protecting the employee and public health, as well as the environment. It also contributes to our Site`s Vision: To be the recognized model of excellence for the United States Department of Energy Nuclear Weapons Complex, valuing and involving the individual to continually improve operations, safety, health environmental protection, quality, and customer satisfaction.

Bloedau, R.K.; Scogin, J.T.

1994-03-01T23:59:59.000Z

365

Electrical conductivity of noble gases at high pressures  

Science Journals Connector (OSTI)

Theoretical results for the electrical conductivity of noble gas plasmas are presented in comparison with experiment. The composition is determined within a partially ionized plasma model. The conductivity is then calculated using linear response theory, in which the relevant scattering mechanisms of electrons from ions, electrons, and neutral species are taken into account. In particular, the Ramsauer-Townsend effect in electron-neutral scattering is discussed and the importance of a correct description of the Coulomb logarithm in electron scattering by charged particles is shown. A detailed comparison with recent experiments on argon and xenon plasmas is given and results for helium and neon are also revisited. Excellent agreement between theory and experiment is observed, showing considerable improvement upon previous calculations.

J. R. Adams, H. Reinholz, R. Redmer, V. B. Mintsev, N. S. Shilkin, and V. K. Gryaznov

2007-09-21T23:59:59.000Z

366

Quantal Heating of Conducting Electrons with Discrete Spectrum  

SciTech Connect

Usually heating of conducting electrons by dc electric field results in an increase of electron temperature. In this paper we show that the dc heating of 2D electrons, placed in quantized magnetic fields, results in a peculiar electron distribution, which has the same broadening or an effective 'temperature' as the unbiased electron system. The quantal heating, however, violates strongly the Ohm's Law. In the conducting system with discrete electron spectrum the quantal heating results in spectacular decrease of electron resistance and transition of the electrons into a state with zero differential resistance (ZDR). Finally the heating leads to apparent dc driven metal-insulator transition, which correlates with the transition into the ZDR state. The correlation is very unexpected and is not understood.

Vitkalov, S. A. [Department of Physics, The City College of New York, New York, NY 10031 (United States); Bykov, A. A. [Institute of Semiconductor Physics, 630090 Novosibirsk (Russian Federation)

2011-12-23T23:59:59.000Z

367

Publications from Research Conducted at TOPAZ | ORNL Neutron Sciences  

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

Publications from Research Conducted at TOPAZ Publications from Research Conducted at TOPAZ 2013 Publications Janssen Y., Santhanagopalan D., Qian D., Chi M., Wang X., Hoffmann C., Meng Y. S., Khalifah P. G., "Reciprocal salt flux growth of LiFePO4 single crystals with controlled defect concentrations", Chemistry of Materials 25, 4574-4584 (2013). 2012 Publications Phelan W. A., "Challenges in the discovery and characterization of magnetic intermetallics", Louisiana State University , (2012). Phelan W. A., Kangas M. J., McCandless G. T., Drake B. L., Haldolaarachchige N., Zhao L. L., Wang J. K., Wang X. P., Young D. P., Morosan E., Hoffmann C., Chan J. Y., "Synthesis, structure, and physical properties of Ln(Cu,Al,Ga)13-x (Ln = La-Pr, and Eu) and Eu(Cu,Al)13-x", Inorganic Chemistry 51, 10193-10202 (2012).

368

RECENT IMPROVEMENTS IN HIGH?FREQUENCY EDDY CURRENT CONDUCTIVITY SPECTROSCOPY  

Science Journals Connector (OSTI)

Due to its frequency?dependent penetration depth eddy current measurements are capable of mapping near?surface residual stress profiles based on the so?called piezoresistivity effect i.e. the stress?dependence of electric conductivity. To capture the peak compressive residual stress in moderately shot?peened (Almen 4–8A) nickel?base superalloys the eddy current inspection frequency has to go as high as 50–80 MHz. Recently we have reported the development of a new high?frequency eddy current conductivity measuring system that offers an extended inspection frequency range up to 80 MHz. Unfortunately spurious self? and stray?capacitance effects render the complex coil impedance variation with lift?off more nonlinear as the frequency increases which makes it difficult to achieve accurate apparent eddy current conductivity (AECC) measurements with the standard four?point linear interpolation method beyond 25 MHz. In this paper we will demonstrate that reducing the coil size reduces its sensitivity to capacitive lift?off variations which is just the opposite of the better known inductive lift?off effect. Although reducing the coil size also reduces its absolute electric impedance and relative sensitivity to conductivity variations a smaller coil still yields better overall performance for residual stress assessment. In addition we will demonstrate the benefits of a semi?quadratic interpolation scheme that together with the reduced lift?off sensitivity of the smaller probe coil minimizes and in some cases completely eliminates the sensitivity of AECC measurements to lift?off uncertainties. These modifications allow us to do much more robust measurements up to as high as 80–100 MHz with the required high relative accuracy of +/?0.1%.

Bassam A. Abu?Nabah; Peter B. Nagy

2008-01-01T23:59:59.000Z

369

Highly conductive p-type microcrystalline silicon thin films  

SciTech Connect

In the development of thin film solar cells there is presently an increasing interest in microcrystalline silicon, deposited at low temperatures (200--400 C). The plasma deposition of boron doped microcrystalline films was optimized with respect to crystallinity and doping efficiency. High room temperature conductivities up to 39 Scm{sup {minus}1} were achieved under condition when the energy of positive ions impinging on the growth surface is minimized.

Heintze, M.; Schmitt, M. [Univ. Stuttgart (Germany). Inst. fuer Physikalische Elektronik

1996-12-31T23:59:59.000Z

370

Conduction-electron spin resonance in aluminum at 79 GHz  

Science Journals Connector (OSTI)

Conduction-electron spin resonance in aluminum has been studied by the microwave transmission technique at 79 GHz over the temperature range 4-80 K. At low temperatures the g value and linewidth show the same type of anomalous temperature dependence as reported earlier at 35 GHz. At high temperatures, where the linewidth reflects the spin-flip scattering rate from thermal phonons, a strong and unexpected frequency dependence is observed with the linewidth being proportional to the applied frequency.

G. L. Dunifer and M. R. Pattison

1976-08-01T23:59:59.000Z

371

Westinghouse conduct of operations manual as a tool  

SciTech Connect

This presentation discusses the Westinghouse Government-Owned and Contractor-Operated (GOCO) Conduct of Operations Manual and how it compares with US Department of Energy (DOE) Order 5480.19 and with the Price Anderson Safety Guide, 10 CFR 830.310. This presentation will focus on what has been added to the requirements of the DOE order and how these items can be used as tools to create excellence in operation.

Schilperoort, D.L.; Scanlan, P.R.

1992-04-01T23:59:59.000Z

372

Conduct of operations: The foundation of safety -- An overview  

SciTech Connect

This paper discusses issues and approaches dealing with conceptualizing, implementing, and maintaining configuration control commensurate with the conduct of operations approach defined by DOE ORDER 5480.19. Specific topics reviewed will include key elements of assessments to determine the status quo such as assessment criteria, assessment personnel, and assessment scope; administrative programs to maintain the status quo such as organizational definition, responsibilities, interfaces, and priorities; oversight to determine control effectiveness via compliance and performance assessment.

Willett, D.J.; Hertel, N.E.

1992-05-01T23:59:59.000Z

373

Remedial Action and Waste Disposal Conduct of OperationsMatrix  

SciTech Connect

This Conduct of Operations (CONOPS) matrix incorporates the Environmental Restoration Disposal Facility (ERDF) CONOPS matrix (BHI-00746, Rev. 0). The ERDF CONOPS matrix has been expanded to cover all aspects of the RAWD project. All remedial action and waste disposal (RAWD) operations, including waste remediation, transportation, and disposal at the ERDF consist of construction-type activities as opposed to nuclear power plant-like operations. In keeping with this distinction, the graded approach has been applied to the developmentof this matrix.

M. A. Casbon.

1999-05-24T23:59:59.000Z

374

Systematic Variability of Soil Hydraulic Conductivity Across Three Vertisol Catenas  

E-Print Network (OSTI)

of soil measured on small samples is log-normally distributed and related to physical properties of that soil sample (Mapa, 1995; Reynolds and Zebchuk, 1996; Lin et al., 1998; Baldock and Nelson, 2000). The United States Department of Agriculture (USDA... structure and water content for clayey soils (Mapa, 1995; Baldock and Nelson, 2000). 6 Measurement Methods A variety of laboratory and field methods of measuring Ks are available. Laboratory measurements are typically conducted on undisturbed soil...

Rivera, Leonardo Daniel

2011-10-21T23:59:59.000Z

375

Ionic conductivity and glass transition of phosphoric acids  

SciTech Connect

Here we report the low-temperature dielectric and viscoelastic properties of phosphoric acids in the range of H2O:P2O5 1.5 5. Both dielectric and viscosity measurements allow us to determine the glass-transition temperatures of phosphoric acids. The obtained glass-transition temperatures are in good agreement with previous differential scanning calorimetric measurements. Moreover, our analysis reveals moderate decoupling of ionic conductivity from structural relaxation in the vicinity of the glass transition.

Wang, Yangyang [Oak Ridge National Laboratory (ORNL)] [Oak Ridge National Laboratory (ORNL); Lane, Nathan A [ORNL] [ORNL; Sun, Che-Nan [Oak Ridge National Laboratory (ORNL)] [Oak Ridge National Laboratory (ORNL); Fan, Fei [ORNL] [ORNL; Zawodzinski, Thomas [University of Tennessee, Knoxville (UTK)] [University of Tennessee, Knoxville (UTK); Sokolov, Alexei P [ORNL] [ORNL

2013-01-01T23:59:59.000Z

376

Electrohydrodynamic Stability of Poorly Conducting Parallel Plasma Flows  

Science Journals Connector (OSTI)

Aerospace automobile structural and biomedical engineering applications require strong and smart materials to minimize the weight and vibrations and maximize the strength to achieve an efficient dynamic response and economic advantages. These materials are usually synthesized using poorly conducting plasma in the presence of a strong electric field. This strong applied electric field produces instabilities known as Electrohydrodynamic instability in a poorly conducting parallel flow of plasma. These instabilities produce impurities in the manufacture of strong smart materials. Therefore to manufacture these materials free from impurities there is a need to know whether this external constraint of electric field either suppress or augments these electrohydrodynamic instabilities. This can be achieved by investigating Electrohydrodynamic stability in the presence of an external constraint of strong electric field. The study of this instability is the main objective of this paper. In this paper stability of poorly conducting parallel plasma in a rectangular channel is studied in the presence of strong electric field subject to linear stability analysis. The basic flow is a function of electric potential and we found that this potential difference also drives the flow in addition to plasma pressure gradient. The condition for the onset of stability is determined in terms of Electric Reynolds Number using both moment and energy methods combined with Galerkin technique. If the motion is unstable an upperbound for the amplification factor is given. From this analysis we conclude that a proper choice of Electric Reynolds number controls instability of a parallel poorly conducting plasma. This result is useful in the manufacture of strong and smart materials free from impurities.

N. Shubha

2006-01-01T23:59:59.000Z

377

A New Route to Nanoscale Conducting Channels in Insulating Oxides  

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

A New Route to Nanoscale Conducting Channels in Insulating Oxides Print A New Route to Nanoscale Conducting Channels in Insulating Oxides Print Two-dimensional electron gases (2DEGs)-narrow conducting channels at the surfaces and interfaces of semiconductor materials-are the bedrock of conventional electronics. The startling 2004 discovery that such 2DEGs could be engineered at the interface between two insulating transition-metal oxides, SrTiO3 and LaAlO3, initiated a worldwide effort to harness the functionality of oxide materials for advanced electronic applications. Now, an international collaboration working at the ALS has shown that the interface is not required. Using only intense synchrotron light, the group has been able to create and control 2DEGs at the bare surfaces of the insulating oxides SrTiO3 and KTaO3. As well as suggesting a potential methodology to spatially pattern 2DEGs in a wide variety of complex oxides, this discovery opens a new avenue for spectroscopic investigation of these novel electronic systems.

378

A New Route to Nanoscale Conducting Channels in Insulating Oxides  

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

New Route to Nanoscale Conducting Channels in Insulating Oxides Print New Route to Nanoscale Conducting Channels in Insulating Oxides Print Two-dimensional electron gases (2DEGs)-narrow conducting channels at the surfaces and interfaces of semiconductor materials-are the bedrock of conventional electronics. The startling 2004 discovery that such 2DEGs could be engineered at the interface between two insulating transition-metal oxides, SrTiO3 and LaAlO3, initiated a worldwide effort to harness the functionality of oxide materials for advanced electronic applications. Now, an international collaboration working at the ALS has shown that the interface is not required. Using only intense synchrotron light, the group has been able to create and control 2DEGs at the bare surfaces of the insulating oxides SrTiO3 and KTaO3. As well as suggesting a potential methodology to spatially pattern 2DEGs in a wide variety of complex oxides, this discovery opens a new avenue for spectroscopic investigation of these novel electronic systems.

379

A New Route to Nanoscale Conducting Channels in Insulating Oxides  

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

A New Route to Nanoscale Conducting Channels in Insulating Oxides Print A New Route to Nanoscale Conducting Channels in Insulating Oxides Print Two-dimensional electron gases (2DEGs)-narrow conducting channels at the surfaces and interfaces of semiconductor materials-are the bedrock of conventional electronics. The startling 2004 discovery that such 2DEGs could be engineered at the interface between two insulating transition-metal oxides, SrTiO3 and LaAlO3, initiated a worldwide effort to harness the functionality of oxide materials for advanced electronic applications. Now, an international collaboration working at the ALS has shown that the interface is not required. Using only intense synchrotron light, the group has been able to create and control 2DEGs at the bare surfaces of the insulating oxides SrTiO3 and KTaO3. As well as suggesting a potential methodology to spatially pattern 2DEGs in a wide variety of complex oxides, this discovery opens a new avenue for spectroscopic investigation of these novel electronic systems.

380

A New Route to Nanoscale Conducting Channels in Insulating Oxides  

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

A New Route to Nanoscale Conducting Channels in Insulating Oxides Print A New Route to Nanoscale Conducting Channels in Insulating Oxides Print Two-dimensional electron gases (2DEGs)-narrow conducting channels at the surfaces and interfaces of semiconductor materials-are the bedrock of conventional electronics. The startling 2004 discovery that such 2DEGs could be engineered at the interface between two insulating transition-metal oxides, SrTiO3 and LaAlO3, initiated a worldwide effort to harness the functionality of oxide materials for advanced electronic applications. Now, an international collaboration working at the ALS has shown that the interface is not required. Using only intense synchrotron light, the group has been able to create and control 2DEGs at the bare surfaces of the insulating oxides SrTiO3 and KTaO3. As well as suggesting a potential methodology to spatially pattern 2DEGs in a wide variety of complex oxides, this discovery opens a new avenue for spectroscopic investigation of these novel electronic systems.

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381

A New Route to Nanoscale Conducting Channels in Insulating Oxides  

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

A New Route to Nanoscale Conducting Channels in Insulating Oxides Print A New Route to Nanoscale Conducting Channels in Insulating Oxides Print Two-dimensional electron gases (2DEGs)-narrow conducting channels at the surfaces and interfaces of semiconductor materials-are the bedrock of conventional electronics. The startling 2004 discovery that such 2DEGs could be engineered at the interface between two insulating transition-metal oxides, SrTiO3 and LaAlO3, initiated a worldwide effort to harness the functionality of oxide materials for advanced electronic applications. Now, an international collaboration working at the ALS has shown that the interface is not required. Using only intense synchrotron light, the group has been able to create and control 2DEGs at the bare surfaces of the insulating oxides SrTiO3 and KTaO3. As well as suggesting a potential methodology to spatially pattern 2DEGs in a wide variety of complex oxides, this discovery opens a new avenue for spectroscopic investigation of these novel electronic systems.

382

National Synchrotron Light Source guidelines for the conduct of operations  

SciTech Connect

To improve the quality and uniformity of operations at the Department of Energy`s facilities, the DOE issued Order 5480.19 ``Conduct of Operations Requirements at DOE facilities.`` This order recognizes that the success of a facilities mission critically depends upon a high level of performance by its personnel and equipment. This performance can be severely impaired if the facility`s Conduct of Operations pays inadequate attention to issues of organization, safety, health, and the environment. These guidelines are Brookhaven National Laboratory`s and the National Synchrotron Light Source`s acknowledgement of the principles of Conduct of Operations and the response to DOE Order 5480.19. These guidelines cover the following areas: (1) operations organization and administration; (2) shift routines and operating practices; (3) control area activities; (4) communications; (5) control of on-shift training; (6) investigation of abnormal events; (7) notifications; (8) control of equipment and system studies; (9) lockouts and tagouts; (10) independent verification; (11) log-keeping; (12) operations turnover; (13) operations aspects of facility process control (14) required reading; (15) timely orders to operators; (16) operations procedures; (17) operator aid posting; and (18) equipment sizing and labeling.

Buckley, M. [Brookhaven National Lab., Upton, NY (United States). National Synchrotron Light Source

1998-01-01T23:59:59.000Z

383

A New Route to Nanoscale Conducting Channels in Insulating Oxides  

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

A New Route to Nanoscale Conducting Channels in Insulating Oxides Print A New Route to Nanoscale Conducting Channels in Insulating Oxides Print Two-dimensional electron gases (2DEGs)-narrow conducting channels at the surfaces and interfaces of semiconductor materials-are the bedrock of conventional electronics. The startling 2004 discovery that such 2DEGs could be engineered at the interface between two insulating transition-metal oxides, SrTiO3 and LaAlO3, initiated a worldwide effort to harness the functionality of oxide materials for advanced electronic applications. Now, an international collaboration working at the ALS has shown that the interface is not required. Using only intense synchrotron light, the group has been able to create and control 2DEGs at the bare surfaces of the insulating oxides SrTiO3 and KTaO3. As well as suggesting a potential methodology to spatially pattern 2DEGs in a wide variety of complex oxides, this discovery opens a new avenue for spectroscopic investigation of these novel electronic systems.

384

A New Route to Nanoscale Conducting Channels in Insulating Oxides  

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

A New Route to Nanoscale A New Route to Nanoscale Conducting Channels in Insulating Oxides A New Route to Nanoscale Conducting Channels in Insulating Oxides Print Wednesday, 29 August 2012 00:00 Two-dimensional electron gases (2DEGs)-narrow conducting channels at the surfaces and interfaces of semiconductor materials-are the bedrock of conventional electronics. The startling 2004 discovery that such 2DEGs could be engineered at the interface between two insulating transition-metal oxides, SrTiO3 and LaAlO3, initiated a worldwide effort to harness the functionality of oxide materials for advanced electronic applications. Now, an international collaboration working at the ALS has shown that the interface is not required. Using only intense synchrotron light, the group has been able to create and control 2DEGs at the bare surfaces of the insulating oxides SrTiO3 and KTaO3. As well as suggesting a potential methodology to spatially pattern 2DEGs in a wide variety of complex oxides, this discovery opens a new avenue for spectroscopic investigation of these novel electronic systems.

385

eXtremes of heat conduction: Pushing the boundaries of the thermal  

E-Print Network (OSTI)

eXtremes of heat conduction: Pushing the boundaries of the thermal conductivity of materials David. · For example, simplest case of thermal conductivity where resistive scattering dominates C() v() l() d C for the highest thermal conductivity any material (higher conductivity than diamond) Yu et al. (2005) Maruyama

Braun, Paul

386

Requirements in DOE O 5480.19, Conduct of Operations Requirements...  

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

Requirements in DOE O 5480.19, Conduct of Operations Requirements for DOE Facilities Cross-referenced to DOE O 422.1, Conduct of Operations. Requirements in DOE O 5480.19, Conduct...

387

ATP hydrolysis-driven gating in cystic fibrosis transmembrane conductance regulator  

Science Journals Connector (OSTI)

...cystic fibrosis transmembrane conductance regulator Daniella Muallem Paola Vergani * * Author...cystic fibrosis transmembrane conductance regulator (CFTR), alone, is an ion channel...cystic fibrosis transmembrane conductance regulator (CFTR), which resulted in abnormal...

2009-01-01T23:59:59.000Z

388

Electrical conductivity of continental lithospheric mantle from integrated geophysical and petrological modeling  

E-Print Network (OSTI)

Electrical conductivity of continental lithospheric mantle from integrated geophysical; published 11 October 2011. [1] The electrical conductivity of mantle minerals is highly sensitive, and compositional variations. The bulk electrical conductivity model has been integrated into the software package

Jones, Alan G.

389

Lithium-cation conductivity and crystal structure of lithium diphosphate  

SciTech Connect

The electrical conductivity of lithium diphosphate Li{sub 4}P{sub 2}O{sub 7} has been measured and jump-like increasing of ionic conductivity at 913 K has been found. The crystal structure of Li{sub 4}P{sub 2}O{sub 7} has been refined using high temperature neutron diffraction at 300–1050 K. At 913 K low temperature triclinic form of Li{sub 4}P{sub 2}O{sub 7} transforms into high temperature monoclinic one, space group P2{sub 1}/n, a=8.8261(4) Å, b=5.2028(4) Å, c=13.3119(2) Å, ?=104.372(6)°. The migration maps of Li{sup +} cations based on experimental data implemented into program package TOPOS have been explored. It was found that lithium cations in both low- and high temperature forms of Li{sub 4}P{sub 2}O{sub 7} migrate in three dimensions. Cross sections of the migrations channels extend as the temperature rises, but at the phase transition point have a sharp growth showing a strong “crystal structure – ion conductivity” correlation. -- Graphical abstract: Crystal structure of Li{sub 4}P{sub 2}O{sub 7} at 950 K. Red balls represent oxygen atoms; black lines show Li{sup +} ion migration channels in the layers perpendicular to [001] direction. Highlights: • Structure of Li{sub 4}P{sub 2}O{sub 7} has been refined using high temperature neutron diffraction. • At 913 K triclinic form of Li{sub 4}P{sub 2}O{sub 7} transforms into high temperature monoclinic one. • The migration maps of Li{sup +} implemented into program package TOPOS have been explored. • Cross sections of the migrations channels at the phase transition have a sharp growth.

Voronin, V.I., E-mail: voronin@imp.uran.ru [Institute of Metal Physics Urals Branch RAS, S.Kovalevskoy Street 18, 620041 Ekaterinburg (Russian Federation); Sherstobitova, E.A. [Institute of Metal Physics Urals Branch RAS, S.Kovalevskoy Street 18, 620041 Ekaterinburg (Russian Federation); Blatov, V.A., E-mail: blatov@samsu.ru [Samara Center for Theoretical Materials Science (SCTMS), Samara State University, Ac.Pavlov Street 1, 443011 Samara (Russian Federation); Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah 21589 (Saudi Arabia); Shekhtman, G.Sh., E-mail: shekhtman@ihte.uran.ru [Institute of High Temperature Electrochemistry Urals Branch RAS, Akademicheskaya 20, 620990 Ekaterinburg (Russian Federation)

2014-03-15T23:59:59.000Z

390

(Non)renormalization of Anomalous Conductivities and Holography  

E-Print Network (OSTI)

The chiral magnetic and the chiral vortical effects are recently discovered phenomena arising from chiral gauge and gravitational anomalies that lead to generation of electric currents in presence of magnetic field or vorticity. The magnitude of these effects is determined by the anomalous conductivities. These conductivities can be calculated by the linear response theory, and in the strong coupling limit this calculation can be carried out by the holographic techniques. Earlier calculations in case of conformal field theories indicate non-renormalization of these conductivities where the holographic calculation agrees with the free field limit. We extend this holographic study to non-conformal theories exhibiting mass-gap and confinement-deconfinement type transitions in a holographic model based on the analytic black hole solution of Gao and Zhang. We show that radiative corrections are also absent in these non-conformal theories confirming indirect arguments of Jensen et al in a direct and non-trivial fashion. There are various indications in field theory that such radiative corrections should arise when contribution of dynamical gluon fields to the chiral anomaly is present. Motivated by this, we seek for such corrections in the holographic picture and argue that such corrections indeed arise through mixing of the background and its fluctuations with the axion and the one-form fields that couple to the flavor and probe gauge branes through the Wess-Zumino terms. These corrections are non-vanishing when the flavor to color ratio $N_f/N_c$ is finite, therefore they are only visible in the Veneziano limit at large $N_c$.

Umut Gursoy; Aron Jansen

2014-07-11T23:59:59.000Z

391

Surface states and conductivity of silicon nano-wires  

Science Journals Connector (OSTI)

The transport characteristics of low dimensional semiconductors like silicon nano-wires (SiNWs) rarely conform to expectations from geometry and dopant density exhibiting significant variations as a function of different surface terminations/conditions. The association of these mechanisms with surface states and their exact influence on practical SiNW devices still remains largely unclear. Herein we report on the influence of surface state charge distributions on SiNW transport characteristics. For this study p-type SiNW devices with widths of 50 100 and 2000?nm are fabricated from 25 50 and 200?nm-thick SOI wafers. A ?five order difference in effective carrier concentration was observed in the initial SiNWs characteristics when comparing SiNWs fabricated with and without a thermal oxide. The removal of the surface oxide by a hydrogen fluoride (HF) treatment results in a SiNW conductance drop up to ?six orders of magnitude. This effect is from a surface depletion of holes in the SiNW induced by positive surface charges deposited as a result of the HF treatment. However it is observed that this charge density is transient and is dissipated with the re-growth of an oxide layer. In summary the SiNW conductance is shown to vary by several orders of magnitude while comparing its characteristics for the three most studied surface conditions: with a native oxide thermal oxide and HF induced H-terminations. These results emphasize the necessity to interpret the transport characteristics of SiNWs with respect to its surface condition during future investigations pertaining to the physical properties of SiNWs like its piezo-resistance. As a sequel prospects for efficiently sensing an elementary reduction/oxidation chemical process by monitoring the variation of SiNW surface potential or in practice the SiNW conductance is demonstrated.

Thomas Pardoen; Jean-Pierre Raskin

2013-01-01T23:59:59.000Z

392

High-frequency conductivity of type-I superlattices  

Science Journals Connector (OSTI)

By using a method which employs a kinetic description and linear-response theory, we calculated the conductivity of electron-ion many-layer system (type-I superlattices) in the high-frequency and long-wavelength limits. Here electromagnetic radiation is taken to be a homogeneous, oscillating electric field. Our calculation takes into account all contributions in lowest order of the plasma parameter rs. Expressions for frequency-dependent scattering time and effective mass have been numerically obtained. Asymptotic limits for small and large frequencies are analytically derived.

Narkis Tzoar and Chao Zhang

1985-07-15T23:59:59.000Z

393

Electrical conductivity of dispersions: from dry foams to dilute suspensions  

E-Print Network (OSTI)

We present new data for the electrical conductivity of foams in which the liquid fraction ranges from two to eighty percent. We compare with a comprehensive collection of prior data, and we model all results with simple empirical formul\\ae. We achieve a unified description that applies equally to dry foams and emulsions, where the droplets are highly compressed, as well as to dilute suspensions of spherical particles, where the particle separation is large. In the former limit, Lemlich's result is recovered; in the latter limit, Maxwell's result is recovered.

K. Feitosa; S. Marze; A. Saint-Jalmes; D. J. Durian

2005-07-18T23:59:59.000Z

394

The Thermal Conductivity of Low Density Concretes Containing Perlite  

E-Print Network (OSTI)

-Tov, "HEATING5 - An IBM 360 Heat Conduction Program," ORNL/CSD/tm-15(1977). Oak Ridge National Laboratory, Oak Ridge, TN 37831. [5J Expanded Shale Clay and Slate Institute, "Lightweight Concrete Information Sheet," No.4, Washington, D.C., 1958. [6J Moore..., J. P., R. S. Graves, J. G. Stradley, J. H. Hannah, and D. L. McElroy, "Some Thermal Transport Properties of a Limestone Concrete," ORNL/TM-2644 (August 1969), Oak Ridge National Laboratory, Oak Ridge, TN 37831. [7J Valore, R. C., Jr., "Cellular...

Yarbrough, D. W.

395

Transparent Conducting Aerogels of Antimony-Doped Tin Oxide  

Science Journals Connector (OSTI)

Previously,(28) we cast ATO aerogels as thin films and prepared DSCs by coating the mesoporous nanostructure with TiO2 by atomic layer deposition and demonstrated improved performance in the presence of an electron shuttle with fast recombination, indicating advantageous electron collection by the conducting aerogel. ... At. layer deposition was employed to coat the aerogel template conformally with various thicknesses of TiO2 with sub-nanometer precision. ... The TiO2-coated aerogel membranes were incorporated as photoanodes in dye-sensitized solar cells. ...

Juan Pablo Correa Baena; Alexander G. Agrios

2014-10-08T23:59:59.000Z

396

Effective thermal conductivity of packed beds of spheres  

E-Print Network (OSTI)

of N are known only for certain types of regular packing, however, an empirical relation for m ) 0. 3 is given as N = 11. 6(l ? m) (22) When a load is applied to a bed of spheres, the contact area between spheres is determined using the Hertz... the authors compared their analytical solutions to has consistently dealt with beds of materials which have a very low thermal conductivity compared to that of the brass and aluminum spheres. These materials have been solid and hollow glass spheres, ceramic...

Duncan, Allen Buchanan

1987-01-01T23:59:59.000Z

397

Reverse?field reciprocity for conducting specimens in magnetic fields  

Science Journals Connector (OSTI)

A new static?electromagnetic reciprocity principle is presented extending ordinary resistive reciprocity to the case of nonzero magnetic fields by requiring the magnetic field to be reversed when the reciprocal measurement is made. The principle is supported by measurements on various types of specimens including those which exhibit the quantum?Hall effect. A derivation using elementary electromagnetic theory shows that the principle will hold provided only that the specimen is electrically linear (Ohmic) and that the Onsager form for the conductivity tensor applies throughout. The principle has important implications for electrical measurements on semiconductors in applied?magnetic fields.

H. H. Sample; W. J. Bruno; S. B. Sample; E. K. Sichel

1987-01-01T23:59:59.000Z

398

Cross-plane Seebeck coefficient in superlattice structures in the miniband conduction regime  

E-Print Network (OSTI)

?2006? FIG. 6. Electrical conductivity vs Fermi energy ?left?left? and electrical conductiv- ity ?right? vs dopingdk x dk y FIG. 4. Electrical conductivity ?right? vs doping

Vashaee, D; Zhang, Y; Shakouri, A; Zeng, G H; Chiu, Y J

2006-01-01T23:59:59.000Z

399

Temperature effects on the electronic conductivity of single-walled carbon nanotubes  

E-Print Network (OSTI)

The room-temperature electronic conductivity and temperature dependence of conductivity were measured for samples of carbon nanotubes of three types: pristine; functionalized with a nitrobenzene covalent functionalization, ...

Mascaro, Mark Daniel

2007-01-01T23:59:59.000Z

400

E-Print Network 3.0 - ac conductivity studies Sample Search Results  

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

Conductivity, Molecular... Dynamics Simulation, Thermal Conductance ABSTRACT Several heat transfer problems related to single... function between carbon and carbon within a...

Note: This page contains sample records for the topic "ionic-electronic conductivity miec" 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

E-Print Network 3.0 - anomalous conductance oscillations Sample...  

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

spatial conductivity distribution... .1 Numerical simulation of anomalous horizontal fields from conductance distribution map In case the nature... , contain information on the...

402

MEASUREMENT OF CONDUCTING ION MOBILITY AND CONCENTRATIONIN ION-CONTAINING POLYMERS.  

E-Print Network (OSTI)

??In this study, we focus on how to measure conducting ion mobility and conducting ion number density in ion-containing polymers. From a fundamental side, we… (more)

Choi, U Hyeok

2009-01-01T23:59:59.000Z

403

Alan MacDiarmid, Conductive Polymers, and Plastic Batteries  

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

Alan MacDiarmid, Conductive Polymers, and Plastic Batteries Alan MacDiarmid, Conductive Polymers, and Plastic Batteries Resources with Additional Information · Patents Alan MacDiarmid ©Alan MacDiarmid/ University of Pennsylvania Photo by Felice Macera Until 1987, the billions of batteries that had been marketed in myriad sizes and shapes all had one thing in common. To make electricity, they depended exclusively upon chemical reactions involving metal components of the battery. But today a revolutionary new type of battery is available commercially. It stores electricity in plastic. Plastic batteries are the most radical innovation in commercial batteries since the dry cell was introduced in 1890. Plastic batteries offer higher capacity, higher voltage, and longer shelf-life than many competitive designs. Companies are testing new shapes and configurations, including flat batteries, that can be bent like cardboard. Researchers expect that the new technology will free electronic designers from many of the constraints imposed by metal batteries such as limited recharging cycles, high weight, and high cost.

404

Publications from Research Conducted at PTAX | ORNL Neutron Sciences  

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

Publications from Research Conducted at PTAX Publications from Research Conducted at PTAX 2013 Publications Cao G., Subedi A., Calder S., Yan J.-Q., Yi J., Gai Z., Poudel L., Singh D. J., Lumsden M. D., Christianson A. D., Sales B. C., Mandrus D., "Magnetism and electronic structure of La2ZnIrO6 and La2MgIrO6: Candidate Jeff=1/2 Mott insulators", Physical Review B: Condensed Matter and Materials Physics 87, 155136 (2013). Christianson A. D., Lumsden M. D., Marty K., Wang C. H., Calder S., Abernathy D. L., Stone M. B., Mook H. A., McGuire M. A., Sefat A. S., Sales B. C., Mandrus D., Goremychkin E. A., "Doping dependence of the spin excitations in the Fe-based superconductors Fe1+yTe1-xSex", Physical Review B: Condensed Matter and Materials Physics 87, 224410 (2013). Chung J.-H., Song Y.-S., Kim J.-H., Suzuki T., Katsufuji T., Matsuda

405

Publications from Research Conducted at TAX | ORNL Neutron Sciences  

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

Publications from Research Conducted at TAX Publications from Research Conducted at TAX 2013 Publications Cao G., Subedi A., Calder S., Yan J.-Q., Yi J., Gai Z., Poudel L., Singh D. J., Lumsden M. D., Christianson A. D., Sales B. C., Mandrus D., "Magnetism and electronic structure of La2ZnIrO6 and La2MgIrO6: Candidate Jeff=1/2 Mott insulators", Physical Review B: Condensed Matter and Materials Physics 87, 155136 (2013). Christianson A. D., Lumsden M. D., Marty K., Wang C. H., Calder S., Abernathy D. L., Stone M. B., Mook H. A., McGuire M. A., Sefat A. S., Sales B. C., Mandrus D., Goremychkin E. A., "Doping dependence of the spin excitations in the Fe-based superconductors Fe1+yTe1-xSex", Physical Review B: Condensed Matter and Materials Physics 87, 224410 (2013). Jayasekara W., Lee Y., Pandey A., Tucker G. S., Sapkota A., Lamsal

406

Thin-film aerogel thermal conductivity measurements via 3?  

Science Journals Connector (OSTI)

The limiting constraint in a growing number of nano systems is the inability to thermally tune devices. Silica aerogel is widely accepted as the best solid thermal insulator in existence and offers a promising solution for microelectronic systems needing superior thermal isolation. In this study, thin-film silica aerogel films varying in thickness from 250 to 1280 nm were deposited on SiO2 substrates under a variety of deposition conditions. These samples were then thermally characterized using the 3? technique. Deposition processes for depositing the 3? testing mask to the sample were optimized and it was demonstrated that thin-film aerogel can maintain its structure in common fabrication processes for microelectromechanical systems. Results indicate that thin-film silica aerogel can maintain the unique, ultra-low thermal conductivity commonly observed in bulk aerogel, with a directly measured thermal conductivity as low as 0.024 W/m-K at temperature of 295 K and pressure between 0.1 and 1 Pa.

M.L. Bauer; C.M. Bauer; M.C. Fish; R.E. Matthews; G.T. Garner; A.W. Litchenberger; P.M. Norris

2011-01-01T23:59:59.000Z

407

Numerical heat conduction in hydrodynamical models of colliding hypersonic flows  

E-Print Network (OSTI)

Hydrodynamical models of colliding hypersonic flows are presented which explore the dependence of the resulting dynamics and the characteristics of the derived X-ray emission on numerical conduction and viscosity. For the purpose of our investigation we present models of colliding flow with plane-parallel and cylindrical divergence. Numerical conduction causes erroneous heating of gas across the contact discontinuity which has implications for the rate at which the gas cools. We find that the dynamics of the shocked gas and the resulting X-ray emission are strongly dependent on the contrast in the density and temperature either side of the contact discontinuity, these effects being strongest where the postshock gas of one flow behaves quasi-adiabatically while the postshock gas of the other flow is strongly radiative. Introducing additional numerical viscosity into the simulations has the effect of damping the growth of instabilities, which in some cases act to increase the volume of shocked gas and can re-he...

Parkin, E R

2010-01-01T23:59:59.000Z

408

Rechargeable aluminum batteries with conducting polymers as positive electrodes.  

SciTech Connect

This report is a summary of research results from an Early Career LDRD project con-ducted from January 2012 to December 2013 at Sandia National Laboratories. Demonstrated here is the use of conducting polymers as active materials in the posi-tive electrodes of rechargeable aluminum-based batteries operating at room tempera-ture. The battery chemistry is based on chloroaluminate ionic liquid electrolytes, which allow reversible stripping and plating of aluminum metal at the negative elec-trode. Characterization of electrochemically synthesized polypyrrole films revealed doping of the polymers with chloroaluminate anions, which is a quasi-reversible reac-tion that facilitates battery cycling. Stable galvanostatic cycling of polypyrrole and polythiophene cells was demonstrated, with capacities at near-theoretical levels (30-100 mAh g-1) and coulombic efficiencies approaching 100%. The energy density of a sealed sandwich-type cell with polythiophene at the positive electrode was estimated as 44 Wh kg-1, which is competitive with state-of-the-art battery chemistries for grid-scale energy storage.

Hudak, Nicholas S.

2013-12-01T23:59:59.000Z

409

Conductivity tracer studies for a fluidized-bed bioreactor  

SciTech Connect

An automated conductivity tracer test was developed to measure the residence time distribution (RTD) of a cometabolic fluidized-bed bioreactor (FBBR). The FBBR contained sand-core bioparticles grown with phenol and it provided high (70% to 80%) removal of trichloroethene (TCE) at short (3 minute) detention times. The tracer test apparatus was constructed with off-the-shelf components controlled with a PC-based data acquisition system. Non-disruptive hydrodynamic testing was obtained during normal operation of the FBBR. The conductivity of injected brine pulses was monitored at the reactor inlet and outlet. Dispersion numbers and detention times were computed by fitting the advection-dispersion model to the tracer curves. Typical dispersion numbers attributed to the fluidized-bed of bioparticles ranged from 0.07 to 0.11. In simplified modeling of the FBBR, dispersion was found to have little effect on TCE removal. Based on the dispersion of brine pulses, it was determined that phenol feed pulses injected at inhibitory concentrations over 2 g/L would be rapidly dispersed in the biological bed to non-inhibitory concentrations.

Leung, S.Y.; Segar, R.L. Jr. [Univ. of Missouri, Columbia, MO (United States). Dept. of Civil Engineering

1997-12-31T23:59:59.000Z

410

Discovery-based design of transparent conducting oxide films  

Science Journals Connector (OSTI)

The properties of TCO materials derive from the nature, number, and atomic arrangements of metal cations in crystalline or amorphous oxide structures, from the resident morphology, and from the presence of intrinsic or intentionally introduced defects. An enormous body of literature can be accessed from which empirical relationships between structure, composition, charge transport, and transparency have been developed. Previous reviews of this subject have indicated how such information may be used for engineering TCO properties; however, application of more rigorous science-based approaches to the design of materials with superior properties has only recently been tackled. This article summarizes current TCO research results, reviews processing approaches, presents a microscopic description of electronic conductivity in transparent metal oxide systems, and offers guidelines for the design and subsequent development of new materials. The review concludes with a glimpse of some recent work where impedance matching and quantum mechanical tunneling approaches would seem to provide future directions for improving transmissivity in these and similar conducting oxide systems.

Gregory J. Exarhos; Xiao-Dong Zhou

2007-01-01T23:59:59.000Z

411

The Student Conduct Process vs. the Criminal Process The student conduct system is different from the criminal court system. Generally, the student  

E-Print Network (OSTI)

The Student Conduct Process vs. the Criminal Process The student conduct system is different from the criminal court system. Generally, the student conduct process involves a much more informal setting than the criminal court system where hearings are supportive and non-adversarial. While students may have

412

Analytic electrical-conductivity tensor of a nondegenerate Lorentz plasma  

Science Journals Connector (OSTI)

We have developed explicit quantum-mechanical expressions for the conductivity and resistivity tensors of a Lorentz plasma in a magnetic field. The expressions are based on a solution to the Boltzmann equation that is exact when the electric field is weak, the electron-Fermi-degeneracy parameter ??1, and the electron-ion Coulomb-coupling parameter ?/Z?1. (? is the ion-ion coupling parameter and Z is the ion charge state.) Assuming a screened 1/r electron-ion scattering potential, we calculate the Coulomb logarithm in the second Born approximation. The ratio of the term obtained in the second approximation to that obtained in the first is used to define the parameter regime over which the calculation is valid. We find that the accuracy of the approximation is determined by ?/Z and not simply the temperature, and that a quantum-mechanical description can be required at temperatures orders of magnitude less than assumed by Spitzer [Physics of Fully Ionized Gases (Wiley, New York, 1962)]. When the magnetic field B=0, the conductivity is identical to the Spitzer result except the Coulomb logarithm ln ?1=(ln ?1-12)+[(2Ze2/?meve12)(ln ?1-ln 24/3)], where ?1?2meve1?/?, me is the electron mass, ve1?(7kBT/me)1/2, kB is the Boltzmann constant, T is the temperature, ? is the screening length, ? is Planck’s constant divided by 2?, and e is the absolute value of the electron charge. When the plasma Debye length ?D is greater than the ion-sphere radius a, we assume ?=?D; otherwise we set ?=a. The B=0 conductivity is consistent with measurements when Z?1, ??2, and ?/Z?1, and in this parameter regime appears to be more accurate than previous analytic models. The minimum value of ln ?1 when Z>~1, ?>~2, and ?/Z<~1 is 1.9. The expression obtained for the resistivity tensor (B?0) predicts that ??/?? (where ?? and ?? are the resistivities perpendicular and parallel to the magnetic field) can be as much as 40% less than previous analytic calculations. The results are applied to an idealized 17-MA z pinch at stagnation.

W. A. Stygar, G. A. Gerdin, and D. L. Fehl

2002-10-29T23:59:59.000Z

413

Non carbon mixed conducting materials for PEFC electrocatalysts and electrodes  

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

Non-carbon mixed-conducting g materials for PEFC electrocatalysts and electrodes 2010 DOE Hydrogen Program Fuel Cell Project Kick-Off P. I. Vijay K. Ramani Illinois Institute of Technology, Chicago September 28, 2010 This presentation does not contain any proprietary, confidential, or otherwise restricted information * - Overview Timeline Project start date: Sept 1 st 2010 Project start date: Sept. 1 2010 * Project end date: Aug. 31 st 2013 * Percent complete: < 5% Budget * * Total project funding Total project funding - DOE share: $ 1,476,230 - Contractor share: $ 415,775 * F di i d t d t Funding assigned to date: $ $ 300,000 Barriers * Barriers addressed: - Fuel l Cell ll component d durab l bility to be improved * Targets addressed - < 40% ECA Loss

414

NNSA's Summary of Experiments Conducted in Support of Stockpile  

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

for the 1st quarter of FY2012 prepared by NNSA's for the 1st quarter of FY2012 prepared by NNSA's Office of Defense Programs provides descriptions of key NNSA facilities that conduct stockpile stewardship experiments. These include some of the most sophisticated scientific research facilities in the world including, the Dual Axis Radiographic Hydrodynamic Test (DARHT) facility at Los Alamos National Laboratory, National Ignition Facility (NIF) at Lawrence Livermore National Laboratory, and the Z machine at Sandia National Laboratories. The summary also provides the number of experiments performed at each facility during each quarter of the fiscal year. The U.S. Stockpile Stewardship Program is a robust program of scientific inquiry used to sustain and assess the nuclear weapons stockpile without the use of underground nuclear tests. The experiments carried out within

415

NNSA's Summary of Experiments Conducted in Support of Stockpile  

National Nuclear Security Administration (NNSA)

for the 1st quarter of FY2012 prepared by NNSA's for the 1st quarter of FY2012 prepared by NNSA's Office of Defense Programs provides descriptions of key NNSA facilities that conduct stockpile stewardship experiments. These include some of the most sophisticated scientific research facilities in the world including, the Dual Axis Radiographic Hydrodynamic Test (DARHT) facility at Los Alamos National Laboratory, National Ignition Facility (NIF) at Lawrence Livermore National Laboratory, and the Z machine at Sandia National Laboratories. The summary also provides the number of experiments performed at each facility during each quarter of the fiscal year. The U.S. Stockpile Stewardship Program is a robust program of scientific inquiry used to sustain and assess the nuclear weapons stockpile without the use of underground nuclear tests. The experiments carried out within

416

T I ENHANCING THERMAL CONDUCTIVITY OF FLUIDS WITH NANOPARTICLES*  

Office of Scientific and Technical Information (OSTI)

JAM 1 1 1935 JAM 1 1 1935 b T I ENHANCING THERMAL CONDUCTIVITY OF FLUIDS WITH NANOPARTICLES* Stephen U. S. Choi 1 and J. A. Eastman 2 1 Energy Technology Division and ^Materials Science Division Argonne National Laboratory, Argonne, IL 60439 October 1995 The submitted manuscript has been authored by a contractor of the U.S. Government under contract No. W-31-109-ENG-38. Accordingly, the U.S. Government retains a nonexclusive, royalty-free license to publish or reproduce the published form of this contribution, or allow others to do so, for U.S. Government purposes. DISCLAIMER This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsi-

417

Glass capable of ionic conduction and method of preparation  

DOE Patents (OSTI)

Sulfide glasses capable of conducting alkali metal ions are prepared from a nonmetal glass former such as GeS[sub 2], B[sub 2]S[sub 3] and SiS[sub 2] in mixture with a glass modifier such as Na[sub 2]S or another alkali metal sulfide. A molten mixture of the constituents is rapidly quenched to below the glass transition temperature by contact with a metal mold. The rapid quench is sufficient to prevent crystallization and permit solidification as an amorphous solid mixture. An oxygen-free atmosphere is maintained over the mixture to prevent oxidation. A new glass system of (1-X) Na[sub 2]O:XB[sub 2]S[sub 3] is disclosed. 4 figs.

Susman, S.; Delbecq, C.J.; Volin, K.J.; Boehm, L.

1984-02-21T23:59:59.000Z

418

Enhanced Power Stability for Proton Conducting Solid Oxides Fuel Cells  

SciTech Connect

In order to provide the basis for a rational approach to improving the performance of Y-doped BaZrO{sub 3} electrolytes for proton conducting ceramic fuel cells, we carried out a series of coupled computational and experimental studies to arrive at a consensus view of the characteristics affecting the proton conductivity of these systems. The computational part of the project developed a practical first principles approach to predicting the proton mobility as a function of temperature and doping for polycrystalline systems. This is a significant breakthrough representing the first time that first principles methods have been used to study diffusion across grain boundaries in such systems. The basis for this breakthrough was the development of the ReaxFF reactive force field that accurately describes the structure and energetics of Y-doped BaZrO{sub 3} as the proton hops from site to site. The ReaxFF parameters are all derived from an extensive set of quantum mechanics calculations on various clusters, two dimensionally infinite slabs, and three dimensionally infinite periodic systems for combinations of metals, metal alloys, metal oxides, pure and Y-doped BaZrO{sub 3}, including chemical reaction pathways and proton transport pathways, structures. The ReaxFF force field enables molecular dynamics simulations to be carried out quickly for systems with {approx} 10,000 atoms rather than the {approx}100 or so practical for QM. The first 2.5 years were spent on developing and validating the ReaxFF and we have only had an opportunity to apply these methods to only a few test cases. However these simulations lead to transport properties (diffusion coefficients and activation energy) for multi-granular systems in good agreement with current experimental results. Now that we have validated the ReaxFF for diffusion across grain boundaries, we are in the position of being able to use computation to explore strategies to improve the diffusion of protons across grain boundaries, which both theory and experiment agree is the cause of the low conductivity of multi-granular systems. Our plan for a future project is to use the theory to optimize the additives and processing conditions and following this with experiment on the most promising systems. The experimental part of this project focused on improving the synthetic techniques for controlling the grain size and making measurements on the properties of these systems as a function of doping of impurities and of process conditions. A significant attention was paid to screening potential cathode materials (transition metal perovskites) and anode electrocatalysts (metals) for reactivity with Y-doped BaZrO{sub 3}, fabrication compatibility, and chemical stability in fuel cell environment. A robust method for fabricating crack-free thin membranes, as well as methods for sealing anode and cathode chambers, have been successfully developed. Our Pt|BYZ|Pt fuel cell, with a 100 {micro}m thick Y-doped BaZrO{sub 3} electrolyte layer, demonstrates the peak power density and short circuit current density of 28 mW/cm{sup 2} and 130mA/cm{sup 2}, respectively. These are the highest values of this type of fuel cell. All of these provide the basis for a future project in which theory and computation are combined to develop modified ceramic electrolytes capable of both high proton conductivity and excellent mechanical and chemical stability.

Boris Merinov; William A. Goddard III; Sossina Haile; Adri van Duin; Peter Babilo; Sang Soo Han

2005-12-29T23:59:59.000Z

419

Performance improvement plan use in implementing conduct of operations  

SciTech Connect

The Nuclear Materials Processing and Waste Management and Environmental Restoration Divisions (NMPD/WMER) of the Westinghouse Savannah River Company (WSRC) operate nineteen individual facilities at Savannah River Site (SRS). These facilities produce the fuel and target assemblies for the SRS Reactors: extract Tritium, Plutonium, Uranium and other isotopes from the irradiated fuel and targets; safely store the radioactive waste from ongoing operations; and encapsulate the waste in a final waste form for long term disposal. Continuous improvement in the operation of all facilities and in the conduct of business at SRS is the goal embodied in the NMPD/WMER Performance Improvement Plan (PIP) discussed in this document. The NMPD/WMER PIP is the mechanism used to establish a basis for operations that will lead to achievement of a performance level that will meet or exceed the standards developed and used in the commercial nuclear power industry.

Baumhardt, R.J.

1992-06-01T23:59:59.000Z

420

Performance improvement plan use in implementing conduct of operations  

SciTech Connect

The Nuclear Materials Processing and Waste Management and Environmental Restoration Divisions (NMPD/WMER) of the Westinghouse Savannah River Company (WSRC) operate nineteen individual facilities at Savannah River Site (SRS). These facilities produce the fuel and target assemblies for the SRS Reactors: extract Tritium, Plutonium, Uranium and other isotopes from the irradiated fuel and targets; safely store the radioactive waste from ongoing operations; and encapsulate the waste in a final waste form for long term disposal. Continuous improvement in the operation of all facilities and in the conduct of business at SRS is the goal embodied in the NMPD/WMER Performance Improvement Plan (PIP) discussed in this document. The NMPD/WMER PIP is the mechanism used to establish a basis for operations that will lead to achievement of a performance level that will meet or exceed the standards developed and used in the commercial nuclear power industry.

Baumhardt, R.J.

1992-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "ionic-electronic conductivity miec" 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

Factorial design preparation of transparent conducting oxide thin films  

Science Journals Connector (OSTI)

Transparent and conducting properties of Cd2SnO4 films deposited onto glass substrates by the dip coating technique have been obtained using a 24 factorial design. All films were well adhered onto their substrates, presented porous morphology and inverse spinel structure. Statistical factorial design analysis showed that only substrate withdrawal rate and precursor solution concentration had significant effects on average transmission of the films. Cumulative probability graphs of factorial design model coefficients showed that none of the factor levels have significant effects on resistivity. However the films presented significantly higher resistivities using low withdrawal rates and low concentration levels. This indicates resistivity is a more complex function of the factor variables than transmission. From the factorial design experiments and statistical analysis of their results a highest average transmission of 88% and lowest resistivity of 2.43 × 10? 4 ? m were found.

Célia M. Ronconi; Oswaldo L. Alves; Roy E. Bruns

2009-01-01T23:59:59.000Z

422

Molecular dynamics simulations of optical conductivity of dense plasmas  

Science Journals Connector (OSTI)

The optical conductivity ?(?) for dense Coulomb systems is investigated using molecular dynamics simulations on the basis of pseudopotentials to mimic quantum effects. Starting from linear response theory, the response in the long-wavelength limit k=0 can be expressed by different types of autocorrelation functions (ACF’s) such as the current ACF, the force ACF, or the charge density ACF. Consistent simulation data for transverse as well as longitudinal ACF’s are shown which are based on calculations with high numerical accuracy. Results are compared with perturbation expansions which are restricted to small values of the plasma parameter. The relevance with respect to a quantum Coulomb plasma is discussed. Finally, results are presented showing a consistent description of these model plasmas in comparison to quantum statistical approaches and to experimental data.

I. Morozov, H. Reinholz, G. Röpke, A. Wierling, and G. Zwicknagel

2005-06-22T23:59:59.000Z

423

Ion-conducting ceramic apparatus, method, fabrication, and applications  

DOE Patents (OSTI)

A c-axis-oriented HAP thin film synthesized by seeded growth on a palladium hydrogen membrane substrate. An exemplary synthetic process includes electrochemical seeding on the substrate, and secondary and tertiary hydrothermal treatments under conditions that favor growth along c-axes and a-axes in sequence. By adjusting corresponding synthetic conditions, an HAP this film can be grown to a controllable thickness with a dense coverage on the underlying substrate. The thin films have relatively high proton conductivity under hydrogen atmosphere and high temperature conditions. The c-axis oriented films may be integrated into fuel cells for application in the intermediate temperature range of 200-600.degree. C. The electrochemical-hydrothermal deposition technique may be applied to create other oriented crystal materials having optimized properties, useful for separations and catalysis as well as electronic and electrochemical applications, electrochemical membrane reactors, and in chemical sensors.

Yates, Matthew (Penfield, NY); Liu, Dongxia (Rochester, NY)

2012-03-06T23:59:59.000Z

424

Effect of Ion Correlations on High?Frequency Plasma Conductivity  

Science Journals Connector (OSTI)

In an earlier work the ac conductivity of a plasma was investigated by means of an elementary model. The validity of this model has been borne out by a rigorous treatment of plasma at thermal equilibrium. The elementary model is now extended to include the effects of ion correlations for arbitrary fixed ion distributions. For thermal equilibrium correlations it is found that the ion shielding reduces the maximum effective impact parameter by the factor (1 + Z)½ (i.e. both ions and electrons contribute to the shielding) for frequencies low compared to the plasma frequency ?p. For frequencies high compared to ?p the previous results obtain. The resistance due to the excitation of longitudinal waves at frequencies just in excess of ?p is reduced by the factor (1 + Z)?1. However if large?amplitude (nonthermal) ion fluctuations are present the longitudinal wave contribution to the resistance may be greatly enhanced.

John Dawson; Carl Oberman

1963-01-01T23:59:59.000Z

425

Non-steady state heat conduction in composite walls  

E-Print Network (OSTI)

The problem of heat conduction in one-dimensional piecewise homogeneous composite materials is examined by providing an explicit solution of the one-dimensional heat equation in each domain. The location of the interfaces is known, but neither temperature nor heat flux are prescribed there. Instead, the physical assumptions of their continuity at the interfaces are the only conditions imposed. The problem of two semi-infinite domains and that of two finite-sized domains are examined in detail. We indicate also how to extend the solution method to the setting of one finite-sized domain surrounded on both sides by semi-infinite domains, and on that of three finite-sized domains.

Bernard Deconinck; Beatrice Pelloni; Natalie Sheils

2014-02-12T23:59:59.000Z

426

NETL: News Release - NETL Projects Selected to Conduct Geothermal Energy  

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

September 28, 2011 September 28, 2011 NETL Projects Selected to Conduct Geothermal Energy Research Morgantown, W.Va. - Two geothermal energy projects led by researchers at the National Energy Technology Laboratory (NETL) have been selected to receive funding from the U.S. Department of Energy's Office of Energy Efficiency and Renewable Energy. These projects, along with 30 others selected through a competitive process, promise to help accelerate development of geothermal energy technologies and diversify America's sources of clean, renewable energy. "The Department of Energy is investing in pioneering new technologies that will further develop the nation's geothermal resources, create skilled jobs for American workers, and help diversify our energy portfolio," said U.S. Energy Secretary Steven Chu in announcing the selected projects earlier this month. 'The projects . . . will provide opportunities for clean energy innovations that will ensure the U.S. remains a global leader in geothermal energy development and expand the nation's use of this important renewable energy resource."

427

Conductance fluctuations in metal-nanoparticle-metal junctions  

Science Journals Connector (OSTI)

We have fabricated devices where the gap between a pair of gold electrodes was bridged by a 20 nm gold particle stabilized with a citrate coating. The current-voltage characteristic I?(V?Vt)? (with voltage threshold Vt?0 and scaling exponent ?=0.93) is attributed to charge transport in a one-dimensional path. Current fluctuations at a fixed bias voltage were observed, with a fluctuation amplitude Is proportional to the voltage applied voltage. A Fourier analysis of Is(t) showed that the higher harmonics sn of these conductance fluctuations follow a power law sn?f? (with ?=?0.62 in the range 3–30 mHz and ?=?1.08 in the range 30–100 mHz). We demonstrate that current fluctuations derive from conformational changes in the citrate molecules induced by a charge transfer across the molecules.

L. V. Govor; G. H. Bauer; G. Reiter; J. Parisi

2010-10-19T23:59:59.000Z

428

SHOCKS AND THERMAL CONDUCTION FRONTS IN RETRACTING RECONNECTED FLUX TUBES  

SciTech Connect

We present a model for plasma heating produced by time-dependent, spatially localized reconnection within a flare current sheet separating skewed magnetic fields. The reconnection creates flux tubes of new connectivity which subsequently retract at Alfvenic speeds from the reconnection site. Heating occurs in gas-dynamic shocks (GDSs) which develop inside these tubes. Here we present generalized thin flux tube equations for the dynamics of reconnected flux tubes, including pressure-driven parallel dynamics as well as temperature-dependent, anisotropic viscosity and thermal conductivity. The evolution of tubes embedded in a uniform, skewed magnetic field, following reconnection in a patch, is studied through numerical solutions of these equations, for solar coronal conditions. Even though viscosity and thermal conductivity are negligible in the quiet solar corona, the strong GDSs generated by compressing plasma inside reconnected flux tubes generate large velocity and temperature gradients along the tube, rendering the diffusive processes dominant. They determine the thickness of the shock that evolves up to a steady state value, although this condition may not be reached in the short times involved in a flare. For realistic solar coronal parameters, this steady state shock thickness might be as long as the entire flux tube. For strong shocks at low Prandtl numbers, typical of the solar corona, the GDS consists of an isothermal sub-shock where all the compression and cooling occur, preceded by a thermal front where the temperature increases and most of the heating occurs. We estimate the length of each of these sub-regions and the speed of their propagation.

Guidoni, S. E.; Longcope, D. W., E-mail: guidoni@physics.montana.ed [Department of Physics, Montana State University, Bozeman, MT 59717-3840 (United States)

2010-08-01T23:59:59.000Z

429

Pump-probe measurements of the thermal conductivity tensor for materials lacking in-plane symmetry  

E-Print Network (OSTI)

1 Pump-probe measurements of the thermal conductivity tensor for materials lacking in conductivity corresponding to the scanning direction. Also, we demonstrate Nb- V as a low thermal conductivity thermal conductivity tensor and the illuminating spots have arbitrary intensity profiles

Cahill, David G.

430

Submitted to Phys. Rev. B, June 2013 Ultralow thermal conductivity of fullerene derivatives  

E-Print Network (OSTI)

conductivity in WSe2. The objective our study is to verify the exceptionally low thermal conductivities of these materials might affect their thermal conductivities. In addition to PCBM, we also investigate [6,6]-phenyl on the appearance of ultralow thermal conductivity in this class of materials. We use time-domain thermoreflectance

Cahill, David G.

431

Ultralow thermal conductivity and the thermal d t f i t fconductance of interfaces  

E-Print Network (OSTI)

are critical at the nanoscale · Low thermal conductivity in nanostructured materials ­ improved thermoelectric to the thermal conductivity of materials. · Ultralow thermal conductivity: beating the amorphous limitUltralow thermal conductivity and the thermal d t f i t fconductance of interfaces David G. Cahill

Braun, Paul

432

2009 Voluntary Protection Programs Participants' Association (VPPPA) Presentation: Conducting your Annual VPP Self Assessment  

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

2009 Voluntary Protection Programs Participants' Association (VPPPA) Presentation: Conducting your Annual VPP Self Assessment

433

Exact Scaling Laws for Electrical Conductivity Properties of Nematic Polymer Nanocomposite Monodomains**  

E-Print Network (OSTI)

conductivity and strength of carbon nanotubes (CNTs) and the barrier properties of nanoclay platelets. Current

Zhou, Ruhai

434

Ac-conductivity and electromagnetic energy absorption for the Anderson model in linear response theory  

E-Print Network (OSTI)

We continue our study of the ac-conductivity in linear response theory for the Anderson model using the conductivity measure. We establish further properties of the conductivity measure, including nontriviality at nonzero temperature, the high temperature limit, and asymptotics with respect to the disorder. We also calculate the electromagnetic energy absorption in linear response theory in terms of the conductivity measure.

Abel Klein; Peter Müller

2014-03-03T23:59:59.000Z

435

Horizontal cell gap junctions: single-channel conductance and modulation by dopamine  

Science Journals Connector (OSTI)

...of 50-60 pS. The elementary conductance of channels...Dopamine pharmacology Electric Conductivity Intercellular...of 50-60 pS. The elementary conductance of channels...their num- ber or elementary conductance. METHODS...12). Electrode resistance measured in the bath...

D G McHahon; A G Knapp; J E Dowling

1989-01-01T23:59:59.000Z

436

Wind Resource Assessment Handbook: Fundamentals for Conducting a Successful Monitoring  

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

W W W I I N N D D R R E E S S O O U U R R C C E E A A S S S S E E S S S S M M E E N N T T H H A A N N D D B B O O O O K K Fundamentals for Conducting a Successful Monitoring Program Prepared By: AWS Scientific, Inc. CESTM, 251 Fuller Road Albany, NY 12203 www.awsscientific.com April 1997 NREL Subcontract No. TAT-5-15283-01 Prepared for: National Renewable Energy Laboratory 1617 Cole Boulevard Golden, CO 80401 NOTICE: This document was prepared as an account of work sponsored by an agency of the United States government. Neither the United States government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe

437

FDTD simulation of induction heating of conducting ceramic ware  

SciTech Connect

Induction heating for the treatment of metals has been in commercial use since the mid 1960`s. Traditional advantages of induction heating over the convection or radiation processes include speed of heating, possible energy savings, and the ability to customize the coil design to optimize the heating process. In this paper the authors used the Finite-Difference Time-Domain (FDTD) technique to simulate and analyze the induction heating process for highly conducting ceramics. In order to analyze frequency effects, simulations were performed at 300 kHz, 2 MHz, and 25 MHz. It is found that at higher frequencies coils with a pitch of 2 in. or greater became capacitive and generate a large, axial, electric-field component. This new axial electric field, in addition to the normally encountered azimuthal field, causes an improvement in the uniformity of the power deposition in the ceramic sample. If the sample occupies a large portion of the coil, uniformity may also be improved by using a variable-pitch coil, or by extending the length of the coil a few turns beyond the length of the sample. In a production-line arrangement, where multiple samples are placed inside the coil, it is shown that maximum uniformity is achieved when the samples are placed coaxially.

White, M.J.; Iskander, M.F.; Bringhurst, S. [Univ. of Utah, Salt Lake City, UT (United States). Electrical Engineering Dept.

1996-12-31T23:59:59.000Z

438

Washing of Rocky Flats Combustible Residues (Conducted March - May 1995)  

SciTech Connect

The scope of this project is to determine the feasibility of washing plutonium-containing combustible residues using ultrasonic disruption as a method for dislodging particulate. Removal of plutonium particulate and, to a lesser extent, solubilized plutonium from the organic substrate should substantially reduce potential fire, explosion or radioactive release hazards due to radiolytic hydrogen generation or high flammability. Tests were conducted on polypropylene filters which were used as pre-filters in the rich-residue ion-exchange process at the Los Alamos Plutonium Facility. These filters are similar to the Ful-Flo{reg_sign} cartridges used at Rocky Flats that make up a substantial fraction of the combustible residues with the highest hazard rating. Batch experiments were run on crushed filter material in order to determine the amount of Pu removed by stirring, stirring and sonication, and stirring and sonication with the introduction of Pu-chelating water-soluble polymers or surfactants. Significantly more Pu is removed using sonication and sonication with chelators than is removed with mechanical stirring alone.

Mary E. Barr; Ann R. Schake; David A. Romero; Gordon D. Jarvinen

1999-03-01T23:59:59.000Z

439

Studies on lithium acetate doped chitosan conducting polymer system  

Science Journals Connector (OSTI)

The structure of chitosan contains the amine group that can act as electron donors. Complexation between chitosan and the salt can be proven by infrared and X-ray photoelectron spectroscopy methods. The NH2, NH3+ and O?C-NHR vibrations which can be observed at 1590, 1560 and 1650 cm?1 shift to lower wave numbers when the complexes are formed. The after deconvolution Li 1s core level spectrum of the chitosan–salt complexes can contain several gaussian components one of which has a binding energy peak at 55.2 eV which signifies Li–N interaction. The component that peaks at ?403 eV in the N 1s core level spectrum complements the proof of N–Li interaction. The highest conductivity achieved for a plasticized chitosan–salt complex is of the order 10?6 S/cm using lithium acetate as the doping salt. Transference number studies prove that this material is ionic conductor and from transient ionic current studies that mobility of the ions is of the order of 10?4 cm2/V s.

M.Z.A. Yahya; A.K. Arof

2002-01-01T23:59:59.000Z

440

High Temperature Variable Conductance Heat Pipes for Radioisotope Stirling Systems  

SciTech Connect

In a Stirling radioisotope system, heat must continually be removed from the GPHS modules, to maintain the GPHS modules and surrounding insulation at acceptable temperatures. Normally, the Stirling converter provides this cooling. If the Stirling engine stops in the current system, the insulation is designed to spoil, preventing damage to the GPHS, but also ending the mission. An alkali-metal Variable Conductance Heat Pipe (VCHP) is under development to allow multiple stops and restarts of the Stirling engine. The status of the ongoing effort in developing this technology is presented in this paper. An earlier, preliminary design had a radiator outside the Advanced Stirling Radioisotope Generator (ASRG) casing, used NaK as the working fluid, and had the reservoir located on the cold side adapter flange. The revised design has an internal radiator inside the casing, with the reservoir embedded inside the insulation. A large set of advantages are offered by this new design. In addition to reducing the overall size and mass of the VCHP, simplicity, compactness and easiness in assembling the VCHP with the ASRG are significantly enhanced. Also, the permanently elevated temperatures of the entire VCHP allows the change of the working fluid from a binary compound (NaK) to single compound (Na). The latter, by its properties, allows higher performance and further mass reduction of the system. Preliminary design and analysis shows an acceptable peak temperature of the ASRG case of 140 deg. C while the heat losses caused by the addition of the VCHP are 1.8 W.

Tarau, Calin; Walker, Kara L.; Anderson, William G. [Advanced Cooling Technologies, Inc. 1046 New Holland Ave. Lancaster, PA 17601 (United States)

2009-03-16T23:59:59.000Z

Note: This page contains sample records for the topic "ionic-electronic conductivity miec" 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

Large Deviations in Stochastic Heat-Conduction Processes Provide a Gradient-Flow Structure for Heat Conduction  

E-Print Network (OSTI)

We consider three one-dimensional continuous-time Markov processes on a lattice, each of which models the conduction of heat: the family of Brownian Energy Processes with parameter $m$, a Generalized Brownian Energy Process, and the Kipnis-Marchioro-Presutti process. The hydrodynamic limit of each of these three processes is a parabolic equation, the linear heat equation in the case of the BEP$(m)$ and the KMP, and a nonlinear heat equation for the GBEP($a$). We prove the hydrodynamic limit rigorously for the BEP$(m)$, and give a formal derivation for the GBEP($a$). We then formally derive the pathwise large-deviation rate functional for the empirical measure of the three processes. These rate functionals imply gradient-flow structures for the limiting linear and nonlinear heat equations. We contrast these gradient-flow structures with those for processes describing the diffusion of mass, most importantly the class of Wasserstein gradient-flow systems. The linear and nonlinear heat-equation gradient-flow structures are each driven by entropy terms of the form $-\\log \\rho$; they involve dissipation or mobility terms of order $\\rho^2$ for the linear heat equation, and a nonlinear function of $\\rho$ for the nonlinear heat equation.

Mark A. Peletier; Frank Redig; Kiamars Vafayi

2014-03-19T23:59:59.000Z

442

Electron Exchange and Conduction in Nontronite from First-Principles  

SciTech Connect

Fe-bearing clay minerals serve as an important source and sink for electrons in redox reactions in various subsurface geochemical environments, and electron transfer (ET) properties of the Fe2+/Fe3+ redox couple play a decisive role in a variety of physicochemical processes involving clays. Here, we apply first-principles calculations using both periodic GGA+U planewave and Hartree-Fock molecular-cluster frameworks in conjuction with small polaron hopping approach and Marcus electron transfer theory to examine electron exchange mobilities in an Fe-rich smectite, taking nontronite as a case study. GGA+U calculations of the activation barrier for small-polaron migration provide rates of electron hopping that agree very well with values deduced from variable temperature Mössbauer data (M. V. Schaefer, et. al., Environ. Sci. Technol. 45, 540, (2011)), indicating a surprisingly fast electron mobility at room temperature. Based on molecular cluster calculations, we show that the state with tetrahedral Fe2+ ion in the nontronite lattice is about 0.9 eV higher than the one with octahedral Fe2+. Also, evaluation of the ET rates for the Fe2+/Fe3+ electron hopping in tetrahedral (TS) and octahedral sheets (OS), as well as across the sheets (TS–OS) shows that the dominant contribution to the bulk electronic conductivity should come from the ET within the OS. Deprotonation of structural OH groups mediating ET between the Fe ions in the OS is found to decrease the internal reorganization energy and to increase the magnitude of the electronic coupling matrix element, whereas protonation (to OH2 groups) has the opposite effect. Overall, our calculations suggest that the major factors affecting ET rates are the nature and structure of the nearest-neighbor local environment and the degree of covalency of the bonds between Fe and ligands mediating electron hops. The generally higher reorganization energy and weaker electronic coupling found in Fe-bearing clay minerals leads to electron mobilities much lower than in iron oxides.

Alexandrov, Vitali Y.; Neumann, Anke; Scherer, Michelle; Rosso, Kevin M.

2013-01-11T23:59:59.000Z

443

T-568: Mozilla Firefox Bugs Let Remote Users Conduct Cross-Site...  

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

Let Remote Users Conduct Cross-Site Request Forgery Attacks and Execute Arbitrary Code T-568: Mozilla Firefox Bugs Let Remote Users Conduct Cross-Site Request Forgery Attacks...

444

Data Privacy and the Smart Grid: A Voluntary Code of Conduct...  

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

Data Privacy and the Smart Grid: A Voluntary Code of Conduct (VCC) - Draft for Public Comment (September 2014) Data Privacy and the Smart Grid: A Voluntary Code of Conduct (VCC) -...

445

Experimental Investigation of Size Effects on the Thermal Conductivity of Silicon-Germanium Alloy Thin Films  

E-Print Network (OSTI)

We experimentally investigate the role of size effects and boundary scattering on the thermal conductivity of silicon-germanium alloys. The thermal conductivities of a series of epitaxially grown Si[subscript 1-x] Ge[subscript ...

Cheaito, Ramez

446

Free-Energy Shift of Conduction Electrons Due to the s-d Exchange Interaction  

Science Journals Connector (OSTI)

......1968 research-article Articles Free-Energy Shift of Conduction Electrons...Laboratory, Tanashi, Tokyo The free-energy shift of the conduction electrons...usual procedure to obtain the free-energy shift at finite temperature by......

Jun Kondo

1968-10-01T23:59:59.000Z

447

Methods for increasing the thermal conductivity of ultra-high molecular weight polyethylene (UHMWPE)  

E-Print Network (OSTI)

A two-part study was conducted to determine methods for producing ultra-high molecular weight polyethylene with high thermal conductivity by way of polymer chain orientation. The first portion of this report surveys current ...

Miler, Josef L

2006-01-01T23:59:59.000Z

448

Correlating Humidity-Dependent Ionically Conductive Surface Area with Transport Phenomena in Proton-Exchange Membranes  

SciTech Connect

The objective of this effort was to correlate the local surface ionic conductance of a Nafion? 212 proton-exchange membrane with its bulk and interfacial transport properties as a function of water content. Both macroscopic and microscopic proton conductivities were investigated at different relative humidity levels, using electrochemical impedance spectroscopy and current-sensing atomic force microscopy (CSAFM). We were able to identify small ion-conducting domains that grew with humidity at the surface of the membrane. Numerical analysis of the surface ionic conductance images recorded at various relative humidity levels helped determine the fractional area of ion-conducting active sites. A simple square-root relationship between the fractional conducting area and observed interfacial mass-transport resistance was established. Furthermore, the relationship between the bulk ionic conductivity and surface ionic conductance pattern of the Nafion? membrane was examined.

He, Qinggang; Kusoglu, Ahmet; Lucas, Ivan T.; Clark, Kyle; Weber, Adam Z.; Kostecki, Robert

2011-08-01T23:59:59.000Z

449

The Effect of Proppant Size and Concentration on Hydraulic Fracture Conductivity in Shale Reservoirs  

E-Print Network (OSTI)

Hydraulic fracture conductivity in ultra-low permeability shale reservoirs is directly related to well productivity. The main goal of hydraulic fracturing in shale formations is to create a network of conductive pathways in the rock which increase...

Kamenov, Anton

2013-04-11T23:59:59.000Z

450

The effects of temperature and carbon nanotubes on conducting polymer actuator performance  

E-Print Network (OSTI)

Conducting polymers serve as electrically conductive actuators via ion diffusion in and out of the polymer when voltages are applied. Their actuation performance can be largely affected by deposition setup, post-deposition ...

Keng, Yenmei

2010-01-01T23:59:59.000Z

451

In Plane Conductivity Testing, BekkTech LLC | Department of Energy  

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

In Plane Conductivity Testing, BekkTech LLC In Plane Conductivity Testing, BekkTech LLC High Temperature Membrane Working Group Meeting ACS, San Francisco 9-14, 2006, presented by...

452

Determination of thermal conductivity and formation temperature from cooling history of friction-heated probes  

Science Journals Connector (OSTI)

......of geothermal gradient and thermal conductivity of rocks or sediments...the formation temperature and thermal conductivity. Ideally, to...measurements require extra battery power supply and an additional...cooling curve for deducing the thermal properties has been contemplated......

Tien-Chang Lee; A. D. Duchkov; S. G. Morozov

2003-02-01T23:59:59.000Z

453

NEW - DOE O 422.1 Admin Chg 2, Conduct of Operations - DOE Directives...  

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

NEW - DOE O 422.1 Admin Chg 2, Conduct of Operations by Diane Johnson The objective of this Order is to define the requirements for establishing and implementing Conduct of...

454

Order Module--DOE Order 422.1, CONDUCT OF OPERATIONS | Department...  

Energy Savers (EERE)

Order Module--DOE Order 422.1, CONDUCT OF OPERATIONS Order Module--DOE Order 422.1, CONDUCT OF OPERATIONS The general approach to implementing DOE O 422.1 is for contractors to...

455

The Spectrum of the Kinematic Dynamo Operator for an Ideally Conducting Fluid  

E-Print Network (OSTI)

The Spectrum of the Kinematic Dynamo Operator for an Ideally Conducting Fluid dynamo operator and of the corresponding group it generates for an ideally conducting fluid, 2001 Abstract The spectrum of the kinematic dynamo operator

Montgomery-Smith, Stephen

456

Thermal Conductivity of Certain Rock Types and its Relevance to the Storage of Nuclear Waste  

Science Journals Connector (OSTI)

Nine rocks selected from the surface of three plutons have been examined petrographically and their thermal conductivities measured in the temperature range of 100° to 500°C. The thermal conductivities of differe...

V. V. Mirkovich; J. A. Soles

1978-01-01T23:59:59.000Z

457

All-solid-state high-power conduction-cooled Nd:YLF rod laser  

Science Journals Connector (OSTI)

A high-average-power conduction-cooled diode-pumped Nd:YLF rod laser has been developed. A new conduction-cooled side-pumping scheme with a solid prismatic pump-light confinement...

Hirano, Y; Yanagisawa, T; Ueno, S; Tajime, T; Uchino, O; Nagai, T; Nagasawa, C

2000-01-01T23:59:59.000Z

458

Handbook for Planning and Conducting Charrettes for High-Performance Projects: Second Edition  

SciTech Connect

This handbook furnishes guidance for planning and conducting a high-performance building charrette, sometimes called a "greening charrette."

Lindsay, G.; Todd, J. A.; Hayter, S. J.; Ellis, P. G.

2009-09-01T23:59:59.000Z

459

Thermal conductivity of highly-ordered mesoporous titania thin films from 30 to 320 K  

E-Print Network (OSTI)

Thermal resistance of grain boundaries in alumina ceramicsThermal conductivity of highly porous zirconia”. Journal of the European Ceramic

2011-01-01T23:59:59.000Z

460

Operating Experience Level 3, Importance of Conduct of Operations and Training for Effective Criticality Safety Programs  

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

OE-3 2012-07: Importance of Conduct of Operations and Training for Effective Criticality Safety Programs

Note: This page contains sample records for the topic "ionic-electronic conductivity miec" 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

Ultralow Thermal Conductivity in Organoclay Nanolaminates Synthesized via Simple Self-Assembly  

E-Print Network (OSTI)

transform fully dense solids into ultralow thermal conductivity materials. Here we report a simple self of nanolaminate spacing. A simple series resistance model describes the behavior and gives an interfacial thermal thermal conductance For phonon-mediated heat conduction, a material is generally thought to reach its

Braun, Paul

462

Molecular Dynamics Simulations of Heat Conduction in Nanostructures: Effect of Heat Bath  

E-Print Network (OSTI)

temperature profile and thermal conductivity in homogeneous materials. Furthermore, the thermal rectification) The low thermal conductivity of SiNWs is of particular interest for thermoelectric application.10 point of view. On the one hand, superior thermal conductivity has been observed in graphene1

Li, Baowen

463

High-Throughput Computational Screening of thermal conductivity, Debye temperature and Gruneisen parameter  

E-Print Network (OSTI)

thermal properties such as the Debye temperature and the thermal conductivity of materials. We demonstrate studied for the past few decades6 . Low thermal conductivity mate- rials constitute the basis of a new and predict the thermal conductivity of differ- ent materials8,9,11­16 . Such evaluation of the higher

Curtarolo, Stefano

464

Simultaneous increase in electrical conductivity and Seebeck coefficient in highly Boron-doped nanocrystalline Si  

E-Print Network (OSTI)

, and is the thermal conductivity. Although traditionally ZT remained low (below one for most materials), over the last thermoelectric materials due to such a significant reduction in their thermal conductivity compared to bulk Si in their thermal conductivity [1, 2]. Silicon nanostructures have also been recently proposed as efficient

465

A SIMPLIFIED METHOD FOR UPSCALING COMPOSITE MATERIALS WITH HIGH CONTRAST OF THE CONDUCTIVITY  

E-Print Network (OSTI)

exchangers, are characterized by a low volume fraction of the highly conductive material (glass or metal that the composite materials have constant macroscopic thermal conductivity tensors, which in principle canA SIMPLIFIED METHOD FOR UPSCALING COMPOSITE MATERIALS WITH HIGH CONTRAST OF THE CONDUCTIVITY R

Lazarov, Raytcho

466

Anomalous thermal conduction characteristics of phase change composites with single walled carbon nanotube inclusions  

E-Print Network (OSTI)

of the phase change materials, because low thermal conductivity hinders the rate of energy storage and release of the new way of improving the thermal conductivity of phase change materials by seeding nano materials way to manipulate the thermal conductivity of nano composites using one dimensional nano material

Maruyama, Shigeo

467

How Does Folding Modulate Thermal Conductivity of Graphene? Nuo Yang1,2  

E-Print Network (OSTI)

of thermal conductivity is due to scattering of low frequency phonons by the folds. Our results suggest dimensional materials. Keywords Folded graphene ribbon, thermal conductivity, phonon transport, scattering #12 conductivity of low-dimensional silicon and carbon materials11 and graphene ribbons12 were studied by EMD

Li, Baowen

468

Origin of Low Thermal Conductivity in Nuclear Fuels Quan Yin and Sergey Y. Savrasov  

E-Print Network (OSTI)

, the thermal conductivity of UO2 is very low, and the search for alternative materials continuesOrigin of Low Thermal Conductivity in Nuclear Fuels Quan Yin and Sergey Y. Savrasov Department in a very low thermal conductivity of modern nuclear fuels. Consider semiconducting UO2 which is a main

Savrasov, Sergej Y.

469

The role of acids in electrical conduction through ice David E. Stillman,1  

E-Print Network (OSTI)

the soluble impurities common in polar ice, acids produce the largest conductivity response per unit bulkThe role of acids in electrical conduction through ice David E. Stillman,1 Joseph A. MacGregor,2] Electrical conduction through meteoric polar ice is controlled by soluble impurities that originate mostly

Stillman, David E.

470

TOWARDS A PORTABLE, MEMORY-EFFICIENT TEST SYSTEM FOR CONDUCTED ENERGY WEAPONS  

E-Print Network (OSTI)

TOWARDS A PORTABLE, MEMORY-EFFICIENT TEST SYSTEM FOR CONDUCTED ENERGY WEAPONS Peyman Rahmati1. The proposed PTS has been de- velopped for the most widely used Conducted Energy Weapons (CEW), Taser X26, and memory-efficient. Index Terms-- Conducted Energy Weapons, Calibration, Electrical Stimulation

Adler, Andy

471

Li Conductivity in LixMPO4 ,,M Mn, Fe, Co, Ni... Olivine Materials  

E-Print Network (OSTI)

diffusivity may become quite relevant. In addition, the role of electrical vs. ionic conductivity is not clear and an estimate for Li diffusion constants, in the absence of electrical conductivity constraints, is made energy barriers to cross between the channels. Without electrical conductivity limitations the intrinsic

Ceder, Gerbrand

472

DESIGN OF INTELLIGENT CONDUCTIVITY METER BASED ON MSP430F149  

E-Print Network (OSTI)

DESIGN OF INTELLIGENT CONDUCTIVITY METER BASED ON MSP430F149 Yaoguang Wei, Jianqing Wang, Daoliang are agriculture information technology. dliangl@cau.edu.cn Abstract: An intelligent conductivity meter based on MSP430F149 microcontroller was proposed in this paper. The intelligent conductive meter was composed

473

Selection of Conductive Additives in Li-Ion Battery Cathodes A Numerical Study  

E-Print Network (OSTI)

- capacity LiNi1-xCoxO2 to lower cost LiNi1-xCoxO2. The addition of conductive additives to cathode materials significantly improve overall conductivity. Percolation was achieved for the volume fraction of active material particulate system. Neither surface nor bulk modifications of active-material particle conductivities seem

Sastry, Ann Marie

474

Single ultrafast diffusive conduction based optoelectronic switch for multi-channel operation  

E-Print Network (OSTI)

Single ultrafast diffusive conduction based optoelectronic switch for multi-channel operation Fatih to multi-channel operation, including Green's function diffusive conduction solution and crosstalk conduction based optoelectronic switches that accommodate >100 optical channels (with 2,000mm-2 channel

Miller, David A. B.

475

Electrical conductivity of wadsleyite at high temperatures and high pressures Lidong Dai a,b  

E-Print Network (OSTI)

Electrical conductivity of wadsleyite at high temperatures and high pressures Lidong Dai a,b , Shun 2009 Editor: L. Stixrude Keywords: electrical conductivity wadsleyite oxygen fugacity frequency water The electrical conductivity of wadsleyite aggregates has been determined under the broad range of thermodynamic

476

Lead-position dependent regular oscillations and random fluctuations of conductance in graphene quantum dots  

E-Print Network (OSTI)

Lead-position dependent regular oscillations and random fluctuations of conductance in graphene.1088/0953-8984/25/8/085502 Lead-position dependent regular oscillations and random fluctuations of conductance in graphene quantum, for graphene quantum dots, the conductance variations with the lead positions. Since for graphene the types

Lai, Ying-Cheng

477

HEAT CONDUCTION OF SINGLE-WALLED CARBON NANOTUBE IN VARIOUS ENVIRONMENTS  

E-Print Network (OSTI)

HEAT CONDUCTION OF SINGLE-WALLED CARBON NANOTUBE IN VARIOUS ENVIRONMENTS Junichiro Shiomi-ku, Tokyo 113-8656, Japan ABSTRACT Some of our recent studies on the heat conduction of single-walled carbon, the heat conduction is investigated in more practical situations under the influence of inter

Maruyama, Shigeo

478

Capacitive conductivity logging and electrical stratigraphy in a high-resistivity aquifer, Boise Hydrogeophysical Research Site  

E-Print Network (OSTI)

Capacitive conductivity logging and electrical stratigraphy in a high-resistivity aquifer, Boise . Examining such a high-resistivity system provides a good test for the ca- pacitive-conductivity tool because the conventional induc- tion-conductivity tool known to have limited effectiveness in high-resistivity systems did

Barrash, Warren

479

The Netherlands Code of Conduct for Scientific Practice Principles of good scientific teaching and research  

E-Print Network (OSTI)

The Netherlands Code of Conduct for Scientific Practice Principles of good scientific teaching and research 2004, revision 20121 Association of Universities in the Netherlands 1 The code of conduct for Scientific Practice 2 TABLE OF CONTENTS The Netherlands Code of Conduct for Scientific Practice Preamble 3

van Rooij, Robert

480

Adolescent conduct problems and later risk of induced abortion: A population-based longitudinal study  

E-Print Network (OSTI)

MEMORANDUM No 6:2007 Adolescent conduct problems and later risk of induced abortion: A population://www.iss.uio.no/forskning/memoranda.html #12;ii Adolescent conduct problems and later risk of induced abortion: A population- based and abortion. #12;iii Conclusions: Girls with conduct problems in early adolescence are at risk for induced

Løw, Erik

Note: This page contains sample records for the topic "ionic-electronic conductivity miec" 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

A Self-Consistent Approach for Calculating the Effective Hydraulic Conductivity of a Bimodal, Heterogeneous Medium  

SciTech Connect

In this paper, we consider an approach for estimating the effective hydraulic conductivity of a 3D medium with a binary distribution of local hydraulic conductivities. The medium heterogeneity is represented by a combination of matrix medium conductivity with spatially distributed sets of inclusions. Estimation of effective conductivity is based on a self-consistent approach introduced by Shvidler (1985). The tensor of effective hydraulic conductivity is calculated numerically by using a simple system of equations for the main diagonal elements. Verification of the method is done by comparison with theoretical results for special cases and numerical results of Desbarats (1987) and our own numerical modeling. The method was applied to estimating the effective hydraulic conductivity of a 2D and 3D fractured porous medium. The medium heterogeneity is represented by a combination of matrix conductivity and a spatially distributed set of highly conductive fractures. The tensor of effective hydraulic conductivity is calculated for parallel- and random-oriented sets of fractures. The obtained effective conductivity values coincide with Romm's (1966) and Snow's (1969) theories for infinite fracture length. These values are also physically acceptable for the sparsely-fractured-medium case with low fracture spatial density and finite fracture length. Verification of the effective hydraulic conductivity obtained for a fractured porous medium is done by comparison with our own numerical modeling for a 3D case and with Malkovsky and Pek's (1995) results for a 2D case.

Pozdniakov, Sergey; Tsang, Chin-Fu

2004-01-02T23:59:59.000Z

482

Electronically conducting metal oxide nanoparticles and films for optical sensing applications  

DOE Patents (OSTI)

The disclosure relates to a method of detecting a change in a chemical composition by contacting a conducting oxide material with a monitored stream, illuminating the conducting oxide material with incident light, collecting exiting light, monitoring an optical signal based on a comparison of the incident light and the exiting light, and detecting a shift in the optical signal. The conducting metal oxide has a carrier concentration of at least 10.sup.17/cm.sup.3, a bandgap of at least 2 eV, and an electronic conductivity of at least 10.sup.-1 S/cm, where parameters are specified at the gas stream temperature. The optical response of the conducting oxide materials is proposed to result from the high carrier concentration and electronic conductivity of the conducting metal oxide, and the resulting impact of changing gas atmospheres on that relatively high carrier concentration and electronic conductivity. These changes in effective carrier densities and electronic conductivity of conducting metal oxide films and nanoparticles are postulated to be responsible for the change in measured optical absorption associated with free carriers. Exemplary conducting metal oxides include but are not limited to Al-doped ZnO, Sn-doped In.sub.2O.sub.3, Nb-doped TiO.sub.2, and F-doped SnO.sub.2.

Ohodnicki, Jr., Paul R.; Wang, Congjun; Andio, Mark A

2014-09-16T23:59:59.000Z

483

Estimation of conductivity changes in a region of interest with electrical impedance tomography  

E-Print Network (OSTI)

This paper proposes a novel approach to reconstruct changes in a target conductivity from electrical impedance tomography measurements. As in the conventional difference imaging, the reconstruction of the conductivity change is based on electrical potential measurements from the exterior boundary of the target before and after the change. In this paper, however, images of the conductivity before and after the change are reconstructed simultaneously based on the two data sets. The key feature of the approach is that the conductivity after the change is parameterized as a linear combination of the initial state and the change. This allows for modeling independently the spatial characteristics of the background conductivity and the change of the conductivity - by separate regularization functionals. The approach also allows in a straightforward way the restriction of the conductivity change to a localized region of interest inside the domain. While conventional difference imaging reconstruction is based on a glo...

Liu, Dong; Siltanen, Samuli; Laukkanen, Anne maria; Seppanen, Aku

2014-01-01T23:59:59.000Z

484

Conduct Operations Assessment Plan - Developed By NNSA/Nevada Site Office Independent Oversight Division  

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

August 2003 - Conduct of Operations (Programmatic Implementation) August 2003 - Conduct of Operations (Programmatic Implementation) Utilize Conduct of Operations - 5480.19 Utilize BN PD-0021.001 - Formality of Operations Utilize LLNL, LANL comparable documents (WSS) Requirements matrix at the senior management level Flow-down of requirements into facilities VALUE ADDED FOR: AMTS Contractor Assurance Focus Area AMTS ISM Improvements Focus Area AMTS Nuclear Operations Focus Area AMTS Performance Assurance Division AMNS Programs CONDUCT OF OPERATIONS Assessment Plan NNSA/Nevada Site Office Independent Oversight Division Performance Objective: The purpose of this assessment is to verify programmatic implementation of DOE O 5480.19, "Conduct of Operations Requirements of DOE Facilities" Criteria: Operations at DOE facilities shall be conducted in a manner to assure an

485

Approved: 6-29-2010, Conduct of Operations, DOE O 422.1 | Department of  

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

Approved: 6-29-2010, Conduct of Operations, DOE O 422.1 Approved: 6-29-2010, Conduct of Operations, DOE O 422.1 Approved: 6-29-2010, Conduct of Operations, DOE O 422.1 1. PURPOSE. The objective of this Order is to define the requirements for establishing and implementing Conduct of Operations Programs at Department of Energy (DOE), including National Nuclear Security Administration (NNSA), facilities and projects. A Conduct of Operations Program consists of formal documentation, practices, and actions implementing disciplined and structured operations that support mission success and promote worker, public, and environmental protection. The goal is to minimize the likelihood and consequences of human fallibility or technical and organizational system failures. Conduct of Operations is one of the safety management programs recognized in the Nuclear Safety Rule [Title 10

486

Electric conductivity of the quark-gluon plasma investigated using a perturbative QCD based parton cascade  

E-Print Network (OSTI)

Electric conductivity is sensitive to effective cross sections among the particles of the partonic medium. We investigate the electric conductivity of a hot plasma of quarks and gluons, solving the relativistic Boltzmann equation. In order to extract this transport coefficient, we employ the Green-Kubo formalism and, independently, a method motivated by the classical definition of electric conductivity. To this end we evaluate the static electric diffusion current upon the influence of an electric field. Both methods give identical results. For the first time, we obtain numerically the Drude electric conductivity formula for an ultrarelativistic gas of quarks and gluons employing constant isotropic binary cross sections. Furthermore, we extract the electric conductivity for a system of massless quarks and gluons including screened binary and inelastic, radiative $2\\leftrightarrow 3$ perturbative QCD scattering. Comparing with recent lattice results, we find an agreement in the temperature dependence of the conductivity.

Moritz Greif; Ioannis Bouras; Zhe Xu; Carsten Greiner

2014-11-17T23:59:59.000Z

487

Thermal conductivity, electrical resistivity, and permeability of saturated soils at various porosities  

E-Print Network (OSTI)

of Ottawa Sand . 4. Thermal Conductivity Data Analysis 5. Thermal Conductivity of Reference Materials 6. DC Resistivity Data with Plate Electrode System for Kaolinite at Porosity of 49% PAGE 48 52 54 66 71 AC Resistivity Data for Kaolinite... THERMAL CONDUCTIVITY, ELECTRICAL RESISTIVITY, AND PERMEABILITY OF SATURATED SOILS AT VARIOUS POROSITIES A Thesis by JAMES KEITH ENDERBY Submitted to the Graduate College of Texas ARM University in Partial fulfillment of the requirement...

Enderby, James Keith

2012-06-07T23:59:59.000Z

488

Electronically and ionically conductive porous material and method for manufacture of resin wafers therefrom  

DOE Patents (OSTI)

An electrically and ionically conductive porous material including a thermoplastic binder and one or more of anion exchange moieties or cation exchange moieties or mixtures thereof and/or one or more of a protein capture resin and an electrically conductive material. The thermoplastic binder immobilizes the moieties with respect to each other but does not substantially coat the moieties and forms the electrically conductive porous material. A wafer of the material and a method of making the material and wafer are disclosed.

Lin, YuPo J. (Naperville, IL); Henry, Michael P. (Batavia, IL); Snyder, Seth W. (Lincolnwood, IL)

2011-07-12T23:59:59.000Z

489

Ballistic phonon thermal conductance in graphene nano-ribbon: First-principles calculations  

SciTech Connect

Ballistic phonon thermal conductances for graphene nanoribbons are investigated using first-principles calculations with the density functional perturbation theory and the Landauer theory. The phonon thermal conductance per unit width for GNR is larger than that for graphene and increases with decreasing ribbon width. The normalized thermal conductances with regard to a thermal quantum for GNRs are higher than those for the single-walled carbon nanotube that have circumferential lengths corresponding to the width of GNR.

Nakamura, Jun; Tomita, Hiroki [Department of Engineering Sciences, The University of Electro-Communications (UEC-Tokyo), 1-5-1 Chofugaoka, Chofu, Tokyo 182-8585 (Japan)

2013-12-04T23:59:59.000Z

490

Electrical conductivities of aluminum, copper, and tungsten observed by an underwater explosion  

SciTech Connect

Conductivities of dense aluminum, copper, and tungsten are evaluated using exploding wire discharges in water. Evolutions of the radius and the electrical resistance of exploding wire are measured together with direct pyrometric estimation of the temperature. The conductivities are evaluated based on the measurements and their density dependence is compared with theoretical predictions at a fixed temperature. The results indicate that regardless of materials, the conductivity has a minimum around 3% of solid density at temperature of 5000 K.

Sasaki, Toru [Department of Electrical Engineering, Nagaoka University of Technology, Kamitomioka 1603-1, Nagaoka, Niigata 940-2188 (Japan); Nakajima, Mitsuo; Kawamura, Tohru; Horioka, Kazuhiko [Department of Energy Sciences, Tokyo Institute of Technology, Nagatsuta 4259, Midori-ku, Yokohama 226-8502 (Japan)

2010-08-15T23:59:59.000Z

491

The effect of electrolyte composition on hydraulic conductivity of some Texas soils  

E-Print Network (OSTI)

APPENDIX B 74 LIST OF TABLES Table Page Hydraulic conductivities and exchangeable sodium percentages (ESP) for Houston Black clay employ- ing solutions of varying salt concentrations and different SAR levels 21 Hydraulic conductivities... and exchangeable sodium percentages (ESP) for Beaumont clay employing solutions of varying salt concentrations and different SAR levels 22 3 Hydraulic conductivities and exchangeable sodium percentages (ESP) for the 821 horizon of Katy fine sandy loam...

Naghshineh-Pour, Bijan

2012-06-07T23:59:59.000Z

492

Data Privacy and the Smart Grid: A Voluntary Code of Conduct...  

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

Federal Register Notice, Volume 79, No. 177, September 12, 2014 Data Privacy and the Smart Grid: A Voluntary Code of Conduct - Notice of Public Comment: Federal Register...

493

California: Conducting Polymer Binder Boosts Storage Capacity, Wins R&D 100 Award  

Office of Energy Efficiency and Renewable Energy (EERE)

Working with Nextval, Inc., Lawrence Berkeley National Laboratory (LBNL) developed a Conducting Polymer Binder for high-capacity lithium-ion batteries.

494

E-Print Network 3.0 - ac electrical conductivity Sample Search...  

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

(2004) 1726 Highly conductive ordered heterogeneous ion-exchange membranes Summary: -exchange membranes was developed. It was found that application of an ac electric field... but...

495

Vanishing heat conductivity limit for the 2D Cahn-Hilliard-Boussinesq system  

Science Journals Connector (OSTI)

This article studies the vanishing heat conductivity limit for the 2D Cahn-Hilliard-boussinesq system in a bounded domain with non-...

Zaihong Jiang; Jishan Fan

2011-12-01T23:59:59.000Z

496

Developing Low-Conductance Window Frames: Capabilities and Limitations of Current Window Heat Transfer Design Tools  

E-Print Network (OSTI)

across vertical fluid layers, Journal of Heat Transfer.fluid dynamics and conduction simulations of heat transferheat transfer through such window frames, we need, ideally, to simulate fluid

Gustavsen, Arild

2009-01-01T23:59:59.000Z

497

E-Print Network 3.0 - ac conduction properties Sample Search...  

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

measure the dynamical conductance of electrically contacted single-walled carbon nanotubes at dc and ac... between the ac ... Source: Burke, Peter - Department of Electrical...

498

E-Print Network 3.0 - angle-resolved thermal conductivity Sample...  

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

single-walled carbon nanotube films Kei... , the expectation on single-walled carbon nanotubes (SWNTs) to possess high thermal conductivity has attracted... of the thermal...

499

Truncated multiGaussian fields and effective conductance of binary media.  

SciTech Connect

Truncated Gaussian fields provide a flexible model for defining binary media with dispersed (as opposed to layered) inclusions. General properties of excursion sets on these truncated fields are coupled with a distance-based upscaling algorithm and approximations of point process theory to develop an estimation approach for effective conductivity in two-dimensions. Estimation of effective conductivity is derived directly from knowledge of the kernel size used to create the multiGaussian field, defined as the full-width at half maximum (FWHM), the truncation threshold and conductance values of the two modes. Therefore, instantiation of the multiGaussian field is not necessary for estimation of the effective conductance. The critical component of the effective medium approximation developed here is the mean distance between high conductivity inclusions. This mean distance is characterized as a function of the FWHM, the truncation threshold and the ratio of the two modal conductivities. Sensitivity of the resulting effective conductivity to this mean distance is examined for two levels of contrast in the two modal conductances and different FWHM sizes. Results demonstrate that the FWHM is a robust measure of mean travel distance in the background medium. The resulting effective conductivities are accurate when compared to numerical results and results obtained from effective media theory, distance-based upscaling and numerical simulation.

Marzouk, Youssef M. (Massachusetts Institute of Technology, Cambridge, MA); van Bloemen Waanders, Bart Gustaaf; Ray, Jaideep (Sandia National Laboratories, Livermore CA); McKenna, Sean Andrew

2011-01-01T23:59:59.000Z

500

HIGH TEMPERATURE CONDUCTIVITY PROBE FOR MONITORING CONTAMINATION LEVELS IN POWER PLANT BOILER WATER.  

E-Print Network (OSTI)

??A high temperature/high pressure flow through probe was designed to measure high temperature electrical conductivity of aqueous (aq) dilute electrolyte solutions, an application which can… (more)

Hipple, Sarah

2008-01-01T23:59:59.000Z