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Note: This page contains sample records for the topic "gap amor stadium" from the National Library of EnergyBeta (NLEBeta).
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1

Scott Stadium Stadium Road  

E-Print Network [OSTI]

Scott Stadium Stadium Road Residence Hereford College Alderman Road Residence Area Aquatic Increase Service to the Corner I0 750 1,500375 Feet Coordinate System: NAD 1983 StatePlane Virginia South 2: 36.7667 Latitude Of Origin: 36.3333 Units: Foot US #12;Scott Stadium Stadium Road Residence

Acton, Scott

2

Evolution of stadium design/  

E-Print Network [OSTI]

Stadiums are more than just facilities for organized sport; they offer a gathering site for people with shared interest, provide economic benefits to the surrounding community, and most importantly represent the advancements ...

Yaroni, Erika (Erika Liat)

2012-01-01T23:59:59.000Z

3

A Study of Intelligent Stadiums: the City of Manchester Stadium  

E-Print Network [OSTI]

. ?? ???????????????????????????????????????????? ????????????????????????????????????????????? ????????????????????????????????????????????? ?????????????????????????????????????????????? ????????????????????????????????????????? ???????????????????????????????????????????? ????????????????????????????????????????????? ????????????????????????????????????????????? ?????????????????????????????????????????????? ?????????????????????????????????????????? ?? ?????????????????????????????????? ???? [1] Hewlett-Packard, Customer success: Manchester City Football Club. Hewlett-Packard Development Company, L.P. 2004. [2] MCFC, Stadium Info: Introduction. Manchester City Football Club. UK. 2004. [3] PanStadia, Fireproof Methods. Pan...Stadia International: Quarterly Report, 8(1), 81-050. PanStadia International, UK. 2001. [4] Plasmor, Countdown to the Games: A superb stadium for Manchester. Points New, Issue 31, Plasmor Limited, UK. 2001. [5] J. Harvey, City of Manchester Stadium completes...

Chen, Z.; Hong, J.; Li, H.; Xu, Q.

2006-01-01T23:59:59.000Z

4

Stadium development and urban renewal : a look at Washington, DC  

E-Print Network [OSTI]

This thesis investigates the factors, related to urban stadium development, that act as a catalyst for subsequent local urban renewal. Over the recent decades there has been substantial debate related to stadium or arena ...

Rizzo, James W. (James Watson)

2008-01-01T23:59:59.000Z

5

E-Print Network 3.0 - allgemeinzustand und stadium Sample Search...  

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

Hills Indian... ACADEMIC WAY BREVARD ST Stone Bldg. Mike Long Track Student Union Westcott Bldg. Stadium CALL ST... OCALARDOCALARD STADIUM DIXIEDR WHITEDR WHITEDR COLORADOST...

6

Directional emission of stadium-shaped micro-lasers  

E-Print Network [OSTI]

The far-field emission of two dimensional (2D) stadium-shaped dielectric cavities is investigated. Micro-lasers with such shape present a highly directional emission. We provide experimental evidence of the dependance of the emission directionality on the shape of the stadium, in good agreement with ray numerical simulations. We develop a simple geometrical optics model which permits to explain analytically main observed features. Wave numerical calculations confirm the results.

M. Lebental; J. -S. Lauret; J. Zyss; C. Schmit; E. Bogomolny

2006-09-01T23:59:59.000Z

7

SALTSTONE MATRIX CHARACTERIZATION AND STADIUM SIMULATION RESULTS  

SciTech Connect (OSTI)

SIMCO Technologies, Inc. was contracted to evaluate the durability of the saltstone matrix material and to measure saltstone transport properties. This information will be used to: (1) Parameterize the STADIUM{reg_sign} service life code, (2) Predict the leach rate (degradation rate) for the saltstone matrix over 10,000 years using the STADIUM{reg_sign} concrete service life code, and (3) Validate the modeled results by conducting leaching (water immersion) tests. Saltstone durability for this evaluation is limited to changes in the matrix itself and does not include changes in the chemical speciation of the contaminants in the saltstone. This report summarized results obtained to date which include: characterization data for saltstone cured up to 365 days and characterization of saltstone cured for 137 days and immersed in water for 31 days. Chemicals for preparing simulated non-radioactive salt solution were obtained from chemical suppliers. The saltstone slurry was mixed according to directions provided by SRNL. However SIMCO Technologies Inc. personnel made a mistake in the premix proportions. The formulation SIMCO personnel used to prepare saltstone premix was not the reference mix proportions: 45 wt% slag, 45 wt% fly ash, and 10 wt% cement. SIMCO Technologies Inc. personnel used the following proportions: 21 wt% slag, 65 wt% fly ash, and 14 wt% cement. The mistake was acknowledged and new mixes have been prepared and are curing. The results presented in this report are assumed to be conservative since the excessive fly ash was used in the SIMCO saltstone. The SIMCO mixes are low in slag which is very reactive in the caustic salt solution. The impact is that the results presented in this report are expected to be conservative since the samples prepared were deficient in slag and contained excess fly ash. The hydraulic reactivity of slag is about four times that of fly ash so the amount of hydrated binder formed per unit volume in the SIMCO saltstone samples is less than that expected for saltstone containing the reference amount of slag (45 wt.% of the total cementitious mixture versus 21 wt.% used in the SIMCO samples). Consequently the SIMCO saltstone samples are expected to have lower strengths, and tortuosity and higher porosity, water diffusivity, and intrinsic permeability compared to the reference case MCU saltstone. MCU reference saltstone contains nonradioactive salt solution with a composition designed to simulate the product of the Modular Caustic Side Solvent Extraction (MCU) Unit [Harbour, 2009]. The SIMCO saltstone samples were cast in molds and cured for three days under plastic with a source of water to prevent drying. Details of the sample preparation process are presented in Attachment 2. The molds were then removed and the samples were cured at a constant temperature (76 F, 24 C) and 100 percent relative humidity for up to one year. Selected samples were periodically removed and characterized the evolution of the matrix as a function of age. In order to preserve the age dependent microstructure at the specified curing times it is necessary to stop hydration. This was accomplished by immersing the samples in isopropanol for 5 days to replace water with alcohol. The microstructure of the matrix material was also characterized as a function of aging. This information was used as a base line for comparison with leached microstructures. After curing for 137 days, specimens were cut into 20 mm disks and exposed to deionized water with a pH maintained at 10.5. Microstructure and calcium sulfur leaching results for samples leached for 31 days are presented in this report. Insufficient leached material was generated during the testing to date to obtain physical and mineralogical properties for leached saltstone. Longer term experiments are required because the matrix alteration rate due to immersion in deionized water is slow.

Langton, C.

2009-07-30T23:59:59.000Z

8

El amor en la poesia de Ernesto Cardenal  

E-Print Network [OSTI]

completa. En Vida en el amor Cardenal narra el pasaje de JesGs y la Samaritana, quien es una mujer junto a un pozo de agua que da de beber a Jesss. Compara la sed de Jesus con el deseo humano de encontrar a Dios y Cardenal dice, "Esta sed que hay en... no se tiene. Estos son poemas de amor que representan la bdsqueda de Dios. En Vida en el amor Cardenal narra el pasaje de Jamais y la Samaritans quien es una mujer junto a un pozo de agua que le da de heber a Jes5s que estd sediento. Compare la sed...

Lorenzo, Mary Cooley

1995-01-01T23:59:59.000Z

9

Friday, May 14, 2010 Don James Center, Husky Stadium  

E-Print Network [OSTI]

Agenda Friday, May 14, 2010 Don James Center, Husky Stadium 1:30 ­ 2:30 p Committee Member · Presentation: Daniel Schwartz, Chair, Chemical Engineering, UW Laurel James, IGERTCoy · Summary remarks: Daniel J. Evans, Chair, UW Foundation · Closing remarks: Mark A. Emmert, President

Kaminsky, Werner

10

E-Print Network 3.0 - agressividade ao amor Sample Search Results  

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

aos meus pais, Carlos e Zlia e ao meu irmo, Jnior, por todo amor... Rosa da Silva, Rodrigo dos Santos Machado Feitosa e Carlos Eduardo Sanhudo. Ao meu amor, amiga e......

11

Architectural Structures Beijing Olympic Stadium 2008 as Biomimicry of a Bird's Nest  

E-Print Network [OSTI]

Architectural Structures ARCH 251 Beijing Olympic Stadium 2008 as Biomimicry of a Bird's Nest Ann: Bird's Nest 5 Figure 2 Rendering of interior concourse - Beijing National Stadium 8 Figure 3 CAD model welding of steel structure of the Bird's Nest 10 Figure 7 Maasai woman of Kenya plasters dung over her

Barthelat, Francois

12

Sic et non en el Libro de buen amor  

E-Print Network [OSTI]

exponen las bases filosoficas y se explora hasta que punto el concepto impregna la sociedad. Se demuestra corno el antagonismo entre las dos espadas--la autoridad eclesiastica y la civil ? afecta de un modo profundo el vivir y el pensar tanto de la... / AGRADECIMIENTOS. . V1 TABLE OF CONTENTS. . CAPITULO I INTRODUCCION: LA BASE FILOSOFICA. vn II LA SOCIEDAD DEL SIC ET NON. . III EL ENTORNO LITERARIO. . 29 IV EL SIC ET NON EN EL LIBRO DE BUEN AMOR "". V CONCLUSION. OBRAS CITADAS. . 45 88 Obras...

Hinton, Melvin

1999-01-01T23:59:59.000Z

13

Ray-wave correspondence in the nonlinear description of stadium-cavity lasers  

E-Print Network [OSTI]

We show that the solution of fully nonlinear lasing equations for stadium cavities exhibits a highly directional emission pattern. This directionality can be well explained by a ray-dynamical model, where the dominant ray-escape dynamics is governed by the unstable manifolds of the unstable short periodic orbits for the stadium cavity. Investigating the cold-cavity modes relevant for the lasing, we found that all of the high-Q modes have the emission directionality corresponding to that of the ray-dynamical model.

Susumu Shinohara; Takahisa Harayama; Hakan E. Tureci; A. Douglas Stone

2006-09-28T23:59:59.000Z

14

2/2&3 January -August 2001 9 Baseball Stadium Design: Teaching Engineering  

E-Print Network [OSTI]

2/2&3 January - August 2001 9 Baseball Stadium Design: Teaching Engineering Economics and Technical of Engineering. During the past two years, a very successful Sophomore Clinic module on economic design of a base the design process (~2 weeks), fun- damentals of engineering economics (~6 weeks) and basic statistics (1

Newell, James A.

15

59 Gaylord Family-Oklahoma Memorial Stadium 60 Barry Switzer Center  

E-Print Network [OSTI]

CAMPUS MAP 59 Gaylord Family-Oklahoma Memorial Stadium 60 Barry Switzer Center 61 Jones House 62 Bud Wilkinson House 63 Jefferson House 64 Wagner Dining Facility 65 Collums Building 66 Everest Restaurants 77 Couch Tower 78 OCCE Sooner Suites 79 Jim Thorpe Multi-Cultural Center 80 OCCE McCarter Hall

Oklahoma, University of

16

Guidelines for Stadium Application to Potato Tubers Willie Kirk (PSMS, MSU), David Ross (Syngenta crop Protection), Phillip Wharton  

E-Print Network [OSTI]

Guidelines for Stadium Application to Potato Tubers Willie Kirk (PSMS, MSU), David Ross (Syngenta crop Protection), Phillip Wharton and Nora Olsen (University of Idaho) Potatoes are susceptible leak (Pythium ultimum) and black dot (Colletotrichum coccodes). Current recommendations for potato

Douches, David S.

17

SOLAR MODELLING OF COMMERCIAL BUILDINGS Robert Amor, Michael Donn and Ian van der Werff  

E-Print Network [OSTI]

SOLAR MODELLING OF COMMERCIAL BUILDINGS Robert Amor, Michael Donn and Ian van der Werff Energy of modelling the thermal response of buildings. There have been two major obstacles precluding these programs an additional obstacle in the lack of comprehensive weather data files (containing the information required

Amor, Robert

18

Integrating Design Tools for Building Design ROBERT W. AMOR, LINDSAY J. GROVES and MIKE R. DONN  

E-Print Network [OSTI]

Integrating Design Tools for Building Design ROBERT W. AMOR, LINDSAY J. GROVES and MIKE R. DONN for architectural design. Currently a large amount of information is duplicated in describing a building to different design tools. To enable designers to use different design tools to evaluate a building design

Amor, Robert

19

Project Control in Integrated Building Design Systems Godfried Augenbroe* and Robert Amor**  

E-Print Network [OSTI]

Project Control in Integrated Building Design Systems Godfried Augenbroe* and Robert Amor of research into integrated design systems that allow communication between multiple actors and design tools acceptance if, apart from providing 'generic integration facilities', adequate tools are provided to design

Amor, Robert

20

La mujer y el amor en El mismo mar de todos los veranos, de Esther Tusquets  

E-Print Network [OSTI]

IA NMER Y EL AIDR EN EL MISMO MAR DE TODOS LOS VERANOS, DE ESTHER TUSQUEZS A Thesis by Sutmitted to the Graduate College of Texas A&M University in partial fulfillment of the requirement for the degree of MASTER OF ARTS December 1985 Major... Subject: Ncdern Languages LA NUJER Y EL AMOR EN EL NISMO NAR DE TODOS LOS VERANOSg DE ESTHER TUSQUEI'S A Thesis by Approved as to style and content by: Luis F. Costa (Chairman of the Committee) Joe S. Graham (Member) est r C. ' isti Jr. (~) Luis...

Reed, Linnette Fourquet

2012-06-07T23:59:59.000Z

Note: This page contains sample records for the topic "gap amor stadium" 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

Canonical Forms of Multi-Port Dynamic Thermal Networks Lorenzo Codecasa, Dario D'Amore and Paolo Maffezzoni  

E-Print Network [OSTI]

Canonical Forms of Multi-Port Dynamic Thermal Networks Lorenzo Codecasa, Dario D'Amore and Paolo it is shown that multi-port dynamic thermal networks admit four canonical representations which generalize transmission line. Keywords: Multi-Port Thermal Networks, Time-Constant Representation, Structure Function. 1

Paris-Sud XI, Université de

22

Exp riences d'acquisition automatique de connaissances morphologiques par amor age partir d'un th saurus  

E-Print Network [OSTI]

Exp riences d'acquisition automatique de connaissances morphologiques par amor age partir d'un th domaine donn s. Cette m thode exploite les termes synonymes pr sents dans un th - saurus du domaine et une liste de mots qui peut tre tir e du m me th saurus. Cet article pr sente une s - rie d'exp riences

Zweigenbaum, Pierre

23

Amores de Abat-jour: A cena teatral brasileira e a escrita de mulheres nos anos vinte  

E-Print Network [OSTI]

FALL 2001 75 Amores de Abat-jour: a cena teatral brasileira e a escrita de mulheres nos anos vinte Ktia da Costa Bezerra Nas ltimas dcadas, muitos pesquisadores tm se dedicado a um verdadeiro trabalho de escavao arqueolgica na busca por... vozes silenciadas. Para tanto, eles tm procurado desencavar de arquivos e acervos empoeirados nomes e obras esquecidos pela historiografa oficial. Um projeto de resgate queja comea a surtir efeito dado o nmero crescente de antologias e ensaios...

Costa Bezerra, Ká tia da

2001-10-01T23:59:59.000Z

24

Windy Gap Firming Project  

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

Infrastructure projects Interconnection OASIS OATT Windy Gap Firming Project, Final Environmental Impact Statement, DOEEIS-0370 (cooperating agency) Western's proposed...

25

AMoRE: Collaboration for searches for the neutrinoless double-beta decay of the isotope of 100Mo with the aid of 40Ca100MoO4 as a cryogenic scintillation detector  

Science Journals Connector (OSTI)

The AMoRE (Advanced Mo based Rare process Experiment) Collaboration is planning to employ 40Ca100MoO4...single crystals as a cryogenic Scintillation detector for studying the neutrinoless double-beta decay of the...

N. D. Khanbekov

2013-09-01T23:59:59.000Z

26

Son decenas y estn por toda Amrica Latina. Tienen en comn su amor por la ciencia y una curiosidad del tamao  

E-Print Network [OSTI]

Son decenas y están por toda América Latina. Tienen en común su amor por la ciencia y una la Red Inter-Americana de Academias de Ciencias (IANAS, por sus siglas en inglés), la Unesco, la ONU mujeres que lideran la ciencia en América Latina Margarita Rodríguez BBC Mundo Miércoles, 16 de octubre de

Barbosa, Marcia C. B.

27

Cliff Hagan Baseball Stadium  

E-Print Network [OSTI]

Lane (6.5 mi) Sharrow (1.1 mi) Shared Sidewalk (2.0 mi) Shared Use Trail (0.8 mi) Proposed Bicycle Lane (3.5 mi) Proposed Shared Use Trail (0.4 mi) !(l Bicycle Rack DIY Bicycle Repair Station 0 1

MacAdam, Keith

28

Fiber optic gap gauge  

SciTech Connect (OSTI)

A lightweight, small size, high sensitivity gauge for indirectly measuring displacement or absolute gap width by measuring axial strain in an orthogonal direction to the displacement/gap width. The gap gauge includes a preferably titanium base having a central tension bar with springs connecting opposite ends of the tension bar to a pair of end connector bars, and an elongated bow spring connected to the end connector bars with a middle section bowed away from the base to define a gap. The bow spring is capable of producing an axial strain in the base proportional to a displacement of the middle section in a direction orthogonal to the base. And a strain sensor, such as a Fabry-Perot interferometer strain sensor, is connected to measure the axial strain in the base, so that the displacement of the middle section may be indirectly determined from the measurement of the axial strain in the base.

Wood, Billy E. (Livermore, CA); Groves, Scott E. (Brentwood, CA); Larsen, Greg J. (Brentwood, CA); Sanchez, Roberto J. (Pleasanton, CA)

2006-11-14T23:59:59.000Z

29

Generation gaps in engineering?  

E-Print Network [OSTI]

There is much enthusiastic debate on the topic of generation gaps in the workplace today; what the generational differences are, how to address the apparent challenges, and if the generations themselves are even real. ...

Kim, David J. (David Jinwoo)

2008-01-01T23:59:59.000Z

30

Windy Gap Firming Project  

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

Windy Gap Firming Project Windy Gap Firming Project Skip Navigation Links Transmission Functions Infrastructure projects Interconnection OASIS OATT Windy Gap Firming Project, Final Environmental Impact Statement, DOE/EIS-0370 (cooperating agency) Western's proposed action is to relocate approximately 3.8 miles of the existing Estes to Lyons 115-kilovolt transmission line, if the Chimney Hollow Reservoir alternative is constructed. The line would be moved outside the area proposed for the reservoir, and Western would ensure the new location would allow the agency to continue to operate and maintain it. Section 2.4.1.4 of the Final Environmental Impact Statement, Volume 1 provides more information on the transmission line relocation proposal. The U.S. Department of the Interior, Bureau of Reclamation is the Lead Agency for the National Environmental Policy Act Review. Cooperating agencies are Western, the U.S. Army Corps of Engineers and Grand County, Colo.

31

Uncertainties in Gapped Graphene  

E-Print Network [OSTI]

Motivated by graphene-based quantum computer we examine the time-dependence of the position-momentum and position-velocity uncertainties in the monolayer gapped graphene. The effect of the energy gap to the uncertainties is shown to appear via the Compton-like wavelength $\\lambda_c$. The uncertainties in the graphene are mainly contributed by two phenomena, spreading and zitterbewegung. While the former determines the uncertainties in the long-range of time, the latter gives the highly oscillation to the uncertainties in the short-range of time. The uncertainties in the graphene are compared with the corresponding values for the usual free Hamiltonian $\\hat{H}_{free} = (p_1^2 + p_2^2) / 2 M$. It is shown that the uncertainties can be under control within the quantum mechanical law if one can choose the gap parameter $\\lambda_c$ freely.

Eylee Jung; Kwang S. Kim; DaeKil Park

2011-07-27T23:59:59.000Z

32

Multiple gap photovoltaic device  

DOE Patents [OSTI]

A multiple gap photovoltaic device having a transparent electrical contact adjacent a first cell which in turn is adjacent a second cell on an opaque electrical contact, includes utilizing an amorphous semiconductor as the first cell and a crystalline semiconductor as the second cell.

Dalal, Vikram L. (Newark, DE)

1981-01-01T23:59:59.000Z

33

Colorado Gap Analysis  

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

Colorado Gap Analysis Colorado Gap Analysis 2 The Building Codes Assistance Project (BCAP) BCAP is a non-profit advocacy organization established in 1994 as a joint initiative of the Alliance to Save Energy, the American Council for an Energy-Efficient Economy, and the Natural Resources Defense Council. BCAP focuses on providing state and local governments in the U.S., as well as stakeholder organizations, with support on code adoption and implementation through direct assistance, research, data analysis, and coordination with other activities and allies. With over sixteen years of experience supporting numerous state energy offices and city building departments, along with tracking code activities across the country, BCAP is well-positioned to assist in local and statewide activity to advance

34

Energy Gap in Nuclear Matter  

Science Journals Connector (OSTI)

......research-article Articles Energy Gap in Nuclear Matter Takeshi Ishihara a...Research, Kokubunji, Tokyo An energy gap in nuclear matter is studied. The nucleon-nucleon...1966) pp. 1026-1042 Nuclear Force and Energy Gap in Finite Nuclei Hiroharu......

Takeshi Ishihara; Ryozo Tamagaki; Hajime Tanaka; Masaru Yasuno

1963-11-01T23:59:59.000Z

35

GenII Gap Analysis  

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

GENII-Gap Analysis GENII-Gap Analysis Defense Nuclear Facilities Safety Board Recommendation 2002-1 Software Quality Assurance Improvement Plan Commitment 4.2.1.3: Software Quality Assurance Improvement Plan: GENII Gap Analysis Final Report U.S. Department of Energy Office of Environment, Safety, and Health 1000 Independence Ave., S.W. Washington, DC 20585-2040 May 2004 GENII Gap Analysis May 2004 Final Report INTENTIONALLY BLANK ii GENII Gap Analysis May 2004 Final Report FOREWORD This document provides an evaluation of the Software Quality Assurance (SQA) attributes of GENII, a radiological dispersion computer code, relative to established requirements. This evaluation, a "gap analysis", is performed to meet commitment 4.2.1.3 of the Department of

36

MACCS2 Final Gap Analysis  

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

MACCS2-Gap Analysis MACCS2-Gap Analysis Defense Nuclear Facilities Safety Board Recommendation 2002-1 Software Quality Assurance Improvement Plan Commitment 4.2.1.3: Software Quality Assurance Improvement Plan: MACCS2 Gap Analysis Final Report U.S. Department of Energy Office of Environment, Safety and Health 1000 Independence Ave., S.W. Washington, DC 20585-2040 May 2004 MACCS2 Gap Analysis May 2004 Final Report INTENTIONALLY BLANK ii MACCS2 Gap Analysis May 2004 Final Report FOREWORD This report documents the outcome of an evaluation of the Software Quality Assurance (SQA) attributes of the radiological dispersion computer code, MACCS2, relative to established software requirements. This evaluation, a "gap analysis", is performed to meet commitment 4.2.1.3 of the

37

Gap and stripline combined monitor  

DOE Patents [OSTI]

A combined gap and stripline monitor device for measuring the intensity and position of a charged particle beam bunch in a beam pipe of a synchrotron radiation facility is disclosed. The monitor has first and second beam pipe portions with an axial gap therebetween. An outer pipe cooperates with the first beam pipe portion to form a gap enclosure, while inner strips cooperate with the first beam pipe portion to form a stripline monitor, with the stripline length being the same as the gap enclosure length. 4 figs.

Yin, Y.

1986-08-19T23:59:59.000Z

38

Pneumatic gap sensor and method  

DOE Patents [OSTI]

An apparatus and method for monitoring and maintaining a predetermined width in the gap between a casting nozzle and a casting wheel, wherein the gap is monitored by means of at least one pneumatic gap sensor. The pneumatic gap sensor is mounted on the casting nozzle in proximity to the casting surface and is connected by means of a tube to a regulator and a transducer. The regulator provides a flow of gas through a restictor to the pneumatic gap sensor, and the transducer translates the changes in the gas pressure caused by the proximity of the casting wheel to the pneumatic gap sensor outlet into a signal intelligible to a control device. The relative positions of the casting nozzle and casting wheel can thereby be selectively adjusted to continually maintain a predetermined distance between their adjacent surfaces. The apparatus and method enables accurate monitoring of the actual casting gap in a simple and reliable manner resistant to the extreme temperatures and otherwise hostile casting environment.

Bagdal, Karl T. (Middletown, OH); King, Edward L. (Trenton, OH); Follstaedt, Donald W. (Middletown, OH)

1992-01-01T23:59:59.000Z

39

Parks and Stadiums Since 1960  

Science Journals Connector (OSTI)

The 1960s began in baseball with a New Frontier of its own: expansion franchises were awarded in 1961 to Los Angeles (the Angels) and Washington, DC (a new Senators team to replace the Minnesota-departed one) ...

James T. Bennett

2012-01-01T23:59:59.000Z

40

Bridging Gaps | Department of Energy  

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

Bridging Gaps Bridging Gaps Bridging Gaps Analysis to identify issues, best practices, and recommendations Implementation of modernization, infrastructure planning, and sustainability efforts Evaluation of planning practices to develop an adaptable method that considers revitalization and reuse Analysis of issues with transfers at less than fair market value and recommendations for improvement Evaluation of the Ten-Year (25-year) Site Plans for revitalization and strategic planning interests Tools to be incorporated into programmatic business models and processes Best-practices guide for energy projects Guidance and recommendations to improve the 10 CFR 770 process and less-than-fair-market-value transfers Tools/checklist to evaluate assets for reuse as part of planning

Note: This page contains sample records for the topic "gap amor stadium" 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

Virtual gap dielectric wall accelerator  

DOE Patents [OSTI]

A virtual, moving accelerating gap is formed along an insulating tube in a dielectric wall accelerator (DWA) by locally controlling the conductivity of the tube. Localized voltage concentration is thus achieved by sequential activation of a variable resistive tube or stalk down the axis of an inductive voltage adder, producing a "virtual" traveling wave along the tube. The tube conductivity can be controlled at a desired location, which can be moved at a desired rate, by light illumination, or by photoconductive switches, or by other means. As a result, an impressed voltage along the tube appears predominantly over a local region, the virtual gap. By making the length of the tube large in comparison to the virtual gap length, the effective gain of the accelerator can be made very large.

Caporaso, George James; Chen, Yu-Jiuan; Nelson, Scott; Sullivan, Jim; Hawkins, Steven A

2013-11-05T23:59:59.000Z

42

Energy Gap in Nuclear Matter  

Science Journals Connector (OSTI)

The magnitude of the energy gap in nuclear matter associated with a highly correlated ground state of of the type believed to be important in the theory of superconductivity has been evaluated theoretically. The integral equation of Cooper, Mills, and Sessler is linearized and transformed into a form suitable for numerical solution. The energy gap, calculated by using an appropriate single-particle potential and the Gammel-Thaler two-body potential, is found to be a very strong function of the density of nuclear matter, and of the effective mass at the Fermi surface. It is concluded that the magnitude of the energy gap for nuclear matter should not be compared directly with experimental values for finite nuclei, although the results suggest that if the theory is extended to apply to finite nuclei it probably would be in agreement with experiment.

V. J. Emery and A. M. Sessler

1960-07-01T23:59:59.000Z

43

Local Energy Gap in Deformed Carbon Nanotubes  

Science Journals Connector (OSTI)

......Local Energy Gap in Deformed Carbon Nanotubes Ken-ichi Sasaki 1 *) Yoshiyuki...gap along the axis of a deformed nanotube. We compare our energy gap results...experimental data on energy gaps in nanotubes and peapods. We also discuss the......

Ken-ichi Sasaki; Yoshiyuki Kawazoe; Riichiro Saito

2005-03-01T23:59:59.000Z

44

Domain Walls in Gapped Graphene  

Science Journals Connector (OSTI)

The electronic properties of a particular class of domain walls in gapped graphene are investigated. We show that they can support midgap states which are localized in the vicinity of the domain wall and propagate along its length. With a finite density of domain walls, these states can alter the electronic properties of gapped graphene significantly. If the midgap band is partially filled, the domain wall can behave like a one-dimensional metal embedded in a semiconductor and could potentially be used as a single-channel quantum wire.

G. W. Semenoff; V. Semenoff; Fei Zhou

2008-08-21T23:59:59.000Z

45

Multiple input electrode gap controller  

DOE Patents [OSTI]

A method and apparatus for controlling vacuum arc remelting (VAR) furnaces by estimation of electrode gap based on a plurality of secondary estimates derived from furnace outputs. The estimation is preferably performed by Kalman filter. Adaptive gain techniques may be employed, as well as detection of process anomalies such as glows. 17 figs.

Hysinger, C.L.; Beaman, J.J.; Melgaard, D.K.; Williamson, R.L.

1999-07-27T23:59:59.000Z

46

Emplacement Gantry Gap Analysis Study  

SciTech Connect (OSTI)

To date, the project has established important to safety (ITS) performance requirements for structures, systems, and components (SSCs) based on the identification and categorization of event sequences that may result in a radiological release. These performance requirements are defined within the ''Nuclear Safety Design Bases for License Application'' (NSDB) (BSC 2005 [DIRS 171512], Table A-11). Further, SSCs credited with performing safety functions are classified as ITS. In turn, assurance that these SSCs will perform as required is sought through the use of consensus codes and standards. This gap analysis is based on the design completed for license application only. Accordingly, identification of ITS SSCs beyond those defined within the NSDB are based on designs that may be subject to further development during detail design. Furthermore, several design alternatives may still be under consideration to satisfy certain safety functions, and final selection will not be determined until further design development has occurred. Therefore, for completeness, alternative designs currently under consideration will be discussed throughout this study. This gap analysis will evaluate each code and standard identified within the ''Emplacement Gantry ITS Standards Identification Study'' (BSC 2005 [DIRS 173586]) to ensure each ITS performance requirement is fully satisfied. When a performance requirement is not fully satisfied, a gap is highlighted. This study will identify requirements to supplement or augment the code or standard to meet performance requirements. Further, this gap analysis will identify nonstandard areas of the design that will be subject to a design development plan. Nonstandard components and nonstandard design configurations are defined as areas of the design that do not follow standard industry practices or codes and standards. Whereby, assurance that an SSC will perform as required may not be readily sought though the use of consensus standards. This gap analysis is prepared by the Emplacement and Retrieval (E&R) project team and is intended for the sole use of the Engineering department in work regarding the emplacement gantry. Yucca Mountain Project personnel from the E&R project team should be consulted before use of this gap analysis for purposes other than those stated herein or by individuals other than authorized by the Engineering department.

R. Thornley

2005-05-27T23:59:59.000Z

47

Calibration curves for some standard Gap Tests  

SciTech Connect (OSTI)

The relative shock sensitivities of explosive compositions are commonly assessed using a family of experiments that can be described by the generic term ''Gap Test.'' Gap tests include a donor charge, a test sample, and a spacer, or gap, between two explosives charges. The donor charge, gap material, and test dimensions are held constant within each different version of the gap test. The thickness of the gap is then varied to find the value at which 50% of the test samples will detonate. The gap tests measure the ease with a high-order detonation can be established in the test explosive, or the ''detonability,'' of the explosive. Test results are best reported in terms of the gap thickness at the 50% point. It is also useful to define the shock pressure transmitted into the test sample at the detonation threshold. This requires calibrating the gap test in terms of shock pressure in the gap as a function of the gap thickness. It also requires a knowledge of the shock Hugoniot of the sample explosive. We used the 2DE reactive hydrodynamic code with Forest Fire burn rates for the donor explosives to calculate calibration curves for several gap tests. The model calculations give pressure and particle velocity on the centerline of the experimental set-up and provide information about the curvature and pulse width of the shock wave. 10 refs., 1 fig.

Bowman, A.L.; Sommer, S.C.

1989-01-01T23:59:59.000Z

48

Low band gap polymers Organic Photovoltaics  

E-Print Network [OSTI]

Low band gap polymers for Organic Photovoltaics Eva Bundgaard Ph.D. Dissertation Risø National Bundgaard Title: Low band gap polymers for Organic photovoltaics Department: The polymer department Report the area of organic photovoltaics are focusing on low band gap polymers, a type of polymer which absorbs

49

Generation Gaps in Engineering? David J. Kim  

E-Print Network [OSTI]

Generation Gaps in Engineering? by David J. Kim B.S., Computer Science and Engineering;3 Generation Gaps in Engineering? by David J. Kim Submitted to the System Design and Management Program on May in Engineering and Management ABSTRACT There is much enthusiastic debate on the topic of generation gaps

Gabrieli, John

50

Functional Area Qualification Standard Gap Analysis Qualification Cards |  

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

Services » Assistance » Federal Technical Capability Program » Services » Assistance » Federal Technical Capability Program » Functional Area Qualification Standard Gap Analysis Qualification Cards Functional Area Qualification Standard Gap Analysis Qualification Cards Note: 1. Save the document from the website onto your PC and close it. 2. Open the document on your PC. Answer "No" to the question regarding whether to open the documents as read only. Chemical Processing Gap Construction Management Gap Criticality Safety Gap Emergency Management Gap Environmental Restoration Gap Facility Representative Gap Fire Protection Engineering Gap General Technical Base Gap Industrial Hygiene Gap Mechanical Systems Gap Nuclear Explosive Safety Study Gap Nuclear Safety Specialist Gap Occupational Safety Gap Quality Assurance Gap

51

Hotspot Gap Analysis Final 20070323  

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

HS-0003 HS-0003 Software Evaluation of Hotspot and DOE Safety Software Toolbox Recommendation U.S. Department of Energy Office of Health, Safety and Security 1000 Independence Avenue, S.W. Washington, DC 20585-2040 March, 2007 ii Foreword This report documents the outcome of an evaluation of the Safety Software Quality Assurance (SSQA) attributes of Hotspot, a health physics application, relative to the safety software requirements identified in DOE O 414.1C, Quality Assurance. This evaluation, a "gap analysis", is performed according to the implementation guide DOE G 414.1-4, and is a requisite for deciding whether Hotspot should be designated as a toolbox code for DOE's safety software Central Registry. Comments regarding this document should be addressed to:

52

Hydrothermal Exploration Data Gap Analysis Update  

Broader source: Energy.gov [DOE]

Hydrothermal Exploration Data Gap Analysis presentation by Kate Young, Dan Getman, and Ariel Esposito at the 2012 Peer Review Meeting on May 10, 2012

53

FAQS Gap Analysis Qualification Card Occupational Safety  

Broader source: Energy.gov [DOE]

Functional Area Qualification Standard Gap Analysis Qualification Cards outline the differences between the last and latest version of the FAQ Standard.

54

FAQS Gap Analysis Qualification Card Radiation Protection  

Broader source: Energy.gov [DOE]

Functional Area Qualification Standard Gap Analysis Qualification Cards outline the differences between the last and latest version of the FAQ Standard.

55

Gas mixtures for spark gap closing switches  

DOE Patents [OSTI]

Gas mixtures for use in spark gap closing switches comprised of fluorocarbons and low molecular weight, inert buffer gases. To this can be added a third gas having a low ionization potential relative to the buffer gas. The gas mixtures presented possess properties that optimized the efficiency spark gap closing switches. 6 figs.

Christophorou, L.G.; McCorkle, D.L.; Hunter, S.R.

1987-02-20T23:59:59.000Z

56

Judith Gap Wind Farm | Open Energy Information  

Open Energy Info (EERE)

Gap Wind Farm Gap Wind Farm Jump to: navigation, search Name Judith Gap Wind Farm Facility Judith Gap Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner Invenergy Developer Invenergy Energy Purchaser Northwestern Energy Location South of Judith Gap MT Coordinates 46.6005°, -109.749° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":46.6005,"lon":-109.749,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

57

Narrow band gap amorphous silicon semiconductors  

DOE Patents [OSTI]

Disclosed is a narrow band gap amorphous silicon semiconductor comprising an alloy of amorphous silicon and a band gap narrowing element selected from the group consisting of Sn, Ge, and Pb, with an electron donor dopant selected from the group consisting of P, As, Sb, Bi and N. The process for producing the narrow band gap amorphous silicon semiconductor comprises the steps of forming an alloy comprising amorphous silicon and at least one of the aforesaid band gap narrowing elements in amount sufficient to narrow the band gap of the silicon semiconductor alloy below that of amorphous silicon, and also utilizing sufficient amounts of the aforesaid electron donor dopant to maintain the amorphous silicon alloy as an n-type semiconductor.

Madan, A.; Mahan, A.H.

1985-01-10T23:59:59.000Z

58

Carter Co. Harding Co. Perkins Co. Dunn Co. Dawson Co. Fallon Co.  

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

PENNEL PENNEL BUFFALO LITTLE KNIFE FRYBURG MONDAK PLEVNA LOOKOUT BUTTE E ELKHORN RANCH DICKINSON CADY CREEK MEDICINE POLE HILLS BICENTENNIAL ROOSEVELT BIG STICK ROUGH RIDER MONARCH TREE TOP LOOKOUT BUTTE BUCKHORN MEDORA FLAT TOP BUTTE ELAND DEMORES ASH COULEE WHISKEY JOE GAS CITY DAVIS CREEK WINDY RIDGE POKER JIM PLEVNA S KNUTSON STATE LINE BELL BEAR CREEK ELKHORN RANCH N PIERRE CREEK LONE BUTTE ZENITH MANNING SQUAW GAP AMOR STADIUM HEART S HILINE ASH MARY GAYLORD BULL CREEK HALEY SHORT PINE HILLS W CABIN CREEK GASLIGHT CUPTON DEVILS PASS LITTLE MISSOURI LITTLE BEAVER COOKS PEAK LITTLE BEAVER E CORAL CREEK BEAVER CREEK MORGAN DRAW WATERHOLE CREEK DEER CREEK GRASSY BUTTE CROOKED CREEK CINNAMON CREEK HORSE CREEK KILLDEER SQUARE BUTTE GRAND RIVER RIDER ROCKY RIDGE FOUR EYES TRACY MOUNTAIN COYOTE CREEK HAY DRAW SAND CREEK ROCKY HILL

59

Carter Co. Harding Co. Perkins Co. Dunn Co. Dawson Co. Fallon Co.  

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

PENNEL PENNEL BUFFALO LITTLE KNIFE FRYBURG MONDAK PLEVNA LOOKOUT BUTTE E ELKHORN RANCH DICKINSON CADY CREEK MEDICINE POLE HILLS BICENTENNIAL ROOSEVELT BIG STICK ROUGH RIDER MONARCH TREE TOP LOOKOUT BUTTE BUCKHORN MEDORA FLAT TOP BUTTE ELAND DEMORES ASH COULEE WHISKEY JOE GAS CITY DAVIS CREEK WINDY RIDGE POKER JIM PLEVNA S KNUTSON STATE LINE BELL BEAR CREEK ELKHORN RANCH N PIERRE CREEK LONE BUTTE ZENITH MANNING SQUAW GAP AMOR STADIUM HEART S HILINE ASH MARY GAYLORD BULL CREEK HALEY SHORT PINE HILLS W CABIN CREEK GASLIGHT CUPTON DEVILS PASS LITTLE MISSOURI LITTLE BEAVER COOKS PEAK LITTLE BEAVER E CORAL CREEK BEAVER CREEK MORGAN DRAW WATERHOLE CREEK DEER CREEK GRASSY BUTTE CROOKED CREEK CINNAMON CREEK HORSE CREEK KILLDEER SQUARE BUTTE GRAND RIVER RIDER ROCKY RIDGE FOUR EYES TRACY MOUNTAIN COYOTE CREEK HAY DRAW SAND CREEK ROCKY HILL

60

Carter Co. Harding Co. Perkins Co. Dunn Co. Dawson Co. Fallon Co.  

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

BUFFALO BUFFALO PENNEL LITTLE KNIFE FRYBURG MONDAK PLEVNA LOOKOUT BUTTE E ELKHORN RANCH DICKINSON CADY CREEK BICENTENNIAL MEDICINE POLE HILLS BIG STICK ROOSEVELT ROUGH RIDER MONARCH TREE TOP LOOKOUT BUTTE BUCKHORN MEDORA FLAT TOP BUTTE ELAND DEMORES ASH COULEE WHISKEY JOE GAS CITY DAVIS CREEK WINDY RIDGE POKER JIM PLEVNA S KNUTSON BELL STATE LINE BEAR CREEK ELKHORN RANCH N PIERRE CREEK LONE BUTTE ZENITH MANNING SQUAW GAP AMOR HEART S STADIUM HILINE ASH MARY LAKE ILO GAYLORD BULL CREEK HALEY BULLY SHORT PINE HILLS W CABIN CREEK GASLIGHT CUPTON DEVILS PASS LITTLE MISSOURI LITTLE BEAVER COOKS PEAK LITTLE BEAVER E CORAL CREEK BEAVER CREEK MORGAN DRAW WATERHOLE CREEK DEER CREEK GRASSY BUTTE CROOKED CREEK CINNAMON CREEK HORSE CREEK KILLDEER SQUARE BUTTE GRAND RIVER RIDER ROCKY RIDGE TRACY MOUNTAIN FOUR EYES COYOTE CREEK HAY DRAW SAND CREEK

Note: This page contains sample records for the topic "gap amor stadium" 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

Buffalo Gap Wind Farm | Open Energy Information  

Open Energy Info (EERE)

Gap Wind Farm Gap Wind Farm Jump to: navigation, search Name Buffalo Gap Wind Farm Facility Buffalo Gap Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner AES Developer AES Energy Purchaser Direct Energy Location TX Coordinates 32.310556°, -100.149167° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":32.310556,"lon":-100.149167,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

62

Gaps in the Heisenberg-Ising model  

Science Journals Connector (OSTI)

We report on the closing of gaps in the ground state of the critical Heisenberg-Ising chain at momentum ?. For half-filling, the gap closes at special values of the anisotropy ?=cos(?/Q), where Q is an integer. We explain this behavior with the help of the Bethe ansatz and show that the gap scales as a power of the system size with a variable exponent depending on ?. We use a finite-size analysis to calculate this exponent in the critical region, supplemented by perturbation theory at ??0. For rational 1/r fillings, the gap is shown to be closed for all values of ? and the corresponding perturbation expansion in ? shows a remarkable cancellation of various diagrams.

Rudolf A. Rmer; Hans-Peter Eckle; Bill Sutherland

1995-07-15T23:59:59.000Z

63

Efficient Band Gap Prediction for Solids  

E-Print Network [OSTI]

An efficient method for the prediction of fundamental band gaps in solids using density functional theory (DFT) is proposed. Generalizing the Delta self-consistent-field (?SCF [delta SCF]) method to infinite solids, the ...

Chan, Maria K.

64

Columbia River Component Data Gap Analysis  

SciTech Connect (OSTI)

This Data Gap Analysis report documents the results of a study conducted by Washington Closure Hanford (WCH) to compile and reivew the currently available surface water and sediment data for the Columbia River near and downstream of the Hanford Site. This Data Gap Analysis study was conducted to review the adequacy of the existing surface water and sediment data set from the Columbia River, with specific reference to the use of the data in future site characterization and screening level risk assessments.

L. C. Hulstrom

2007-10-23T23:59:59.000Z

65

Anomalous Doppler effects in phononic band gaps  

Science Journals Connector (OSTI)

Doppler effects in periodic acoustic media were studied theoretically and experimentally. Analytical formulas are derived using the Greens function formalism. We found that a far field observer cannot hear the sound inside a band gap from a stationary source, but a moving source can be heard even if the frequency is inside the gap, and the Doppler shifts can be inverted or anomalously large.

Xinhua Hu; Zhihong Hang; Jensen Li; Jian Zi; C. T. Chan

2006-01-30T23:59:59.000Z

66

Gap between jets at the LHC  

SciTech Connect (OSTI)

We describe a NLL BFKL calculation implemented in the HERWIG MC of the gap between jets cross section, that represent a test of BFKL dynamics. We compare the predictions with recent measurements at the Tevatron and present predictions for the LHC. We also discuss the interesting process of looking for gap between jets in diffractive events when protons are detected in the ATLAS Forward Physics (AFP) detectors.

Royon, Christophe [CEA/IRFU/Service de physique des particules, CEA/Saclay, 91191 Gif-sur-Yvette cedex (France)

2013-04-15T23:59:59.000Z

67

Beam dumping system and abort gap  

E-Print Network [OSTI]

The performance of the beam dumping systems and the abort gap cleaning are reviewed in the context of the general machine protection system. Details of the commissioning experience and setting up, encountered equipment problems, the experience with and status of the eXternal Post Operational Checks (XPOC) and the importance of operational procedures are presented for the beam dumping system. The brief experience with the abort gap cleaning is also presented.

Uythoven, J

2010-01-01T23:59:59.000Z

68

Fact #609: February 8, 2010 The Transportation Petroleum Gap...  

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

09: February 8, 2010 The Transportation Petroleum Gap Fact 609: February 8, 2010 The Transportation Petroleum Gap In 1989 the transportation sector petroleum consumption surpassed...

69

Fact #560: March 2, 2009 The Transportation Petroleum Gap | Department...  

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

0: March 2, 2009 The Transportation Petroleum Gap Fact 560: March 2, 2009 The Transportation Petroleum Gap In 1989 the transportation sector petroleum consumption surpassed U.S....

70

Fact #687: August 8, 2011 The Transportation Petroleum Gap |...  

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

7: August 8, 2011 The Transportation Petroleum Gap Fact 687: August 8, 2011 The Transportation Petroleum Gap In 1989 the transportation sector petroleum consumption surpassed U.S....

71

Band-Gap Engineering of Carbon Nanotubes with Grain Boundaries...  

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

Band-Gap Engineering of Carbon Nanotubes with Grain Boundaries. Band-Gap Engineering of Carbon Nanotubes with Grain Boundaries. Abstract: Structure and electronic properties of...

72

Technical Standards, MELCOR - Gap Analysis - May 3, 2004 | Department...  

Energy Savers [EERE]

3, 2004 Technical Standards, MELCOR - Gap Analysis - May 3, 2004 May 3, 2004 Software Quality Assurance Improvement Plan: MELCOR Gap Analysis This report documents the outcome of...

73

Bridging the Gap between Fundamental Physics and Chemistry and...  

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

Bridging the Gap between Fundamental Physics and Chemistry and Applied Models for HCCI Engines Bridging the Gap between Fundamental Physics and Chemistry and Applied Models for...

74

Bridging The Gap 2013 | ornl.gov  

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

3 3 Mar 05 2013 03-05-2013 12:00 AM - 03-06-2013 05:00 PM Oak Ridge National Laboratory hosted the third annual Bridging the Gap on March 5-6, 2013. This event brought entrepreneurs, scientists, and technology transfer experts together to explore opportunities around the lab's most promising new technologies. Oak Ridge, TN CONTACT : Email: Cassie Lopez Phone:(865) 576-9294 Add to Calendar SHARE Bridging The Gap 2013 March 5-6, 2013 (Oak Ridge, TN) Tennessee A-B-C Conference Rooms (Building 5200) Oak Ridge National Laboratory hosted the third annual Bridging the Gap on March 5-6, 2013. This event brought entrepreneurs, scientists, and technology transfer experts together to explore opportunities around the lab's most promising new technologies. Keynote Address: Innovations at ORNL, Thom Mason

75

Olene Gap Geothermal Project | Open Energy Information  

Open Energy Info (EERE)

Olene Gap Geothermal Project Olene Gap Geothermal Project Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Development Project: Olene Gap Geothermal Project Project Location Information Coordinates 42.1725°, -121.62083333333° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":42.1725,"lon":-121.62083333333,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

76

A University of Alabama Axial-Gap Electric Motor Developmenty  

E-Print Network [OSTI]

CAVT A University of Alabama Axial-Gap Electric Motor Developmenty Research Center OBJECTIVE ­ Develop axial gap permanent-magnet electric Axial motor ­ Develop axial gap permanent-magnet electric motor topologies with high torque and power densities MOTIVATION ­ Axial-gap ("pancake") motors have

Carver, Jeffrey C.

77

Oscillation of Fourier Integrals with a spectral gap  

E-Print Network [OSTI]

May 30, 2003 ... In engineering literature, functions with a spectral gap are called high- .... High-

1910-30-71T23:59:59.000Z

78

Natural Gas Engine Development Gaps (Presentation)  

SciTech Connect (OSTI)

A review of current natural gas vehicle offerings is presented for both light-duty and medium- and heavy-duty applications. Recent gaps in the marketplace are discussed, along with how they have been or may be addressed. The stakeholder input process for guiding research and development needs via the Natural Gas Vehicle Technology Forum (NGVTF) to the U.S. Department of Energy and the California Energy Commission is reviewed. Current high-level natural gas engine development gap areas are highlighted, including efficiency, emissions, and the certification process.

Zigler, B.T.

2014-03-01T23:59:59.000Z

79

Closing Gaps in Modeling Multifamily Retrofits  

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

Building America Technical Update Meeting Denver, Colorado April 30, 2013 Jordan Dentz, The Levy Partnership., Inc. Closing Gaps in Modeling Multifamily Retrofits Advanced Residential Integrated Energy Solutions Overview * Multifamily modeling inputs (BA House Simulation Protocols) * Important multifamily measures * Other MF gaps Vital to meet 50% goals and therefore important to include in Building America's multifamily modeling capabilities Model Inputs * Heating set point * Cooling set point * Behavior assumptions 3 Heating Set Point - Central Systems * House simulation protocol assumes 71°F * Overheating is common * Approach: adjust modeled heating set point - how much? * Average heating season indoor temperature was 76°F in a sample of 18 buildings (ARIES 2013a)

80

Improved gap size estimation for scaffolding algorithms  

Science Journals Connector (OSTI)

......and 950 bp. The contigs were set to a fixed size of 3000 bp...three read libraries and four sets of contigs). The results of...parts of the distribution fail to cover the gap and only the longest...we simulated four different sets of contigs from the genome with......

Kristoffer Sahlin; Nathaniel Street; Joakim Lundeberg; Lars Arvestad

2012-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "gap amor stadium" 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

Energy Gaps in a Spacetime Crystal  

E-Print Network [OSTI]

This paper presents an analysis of the band structure of a spacetime potential lattice created by a standing electromagnetic wave. We show that there are energy band gaps. We estimate the effect, and propose a measurement that could confirm the existence of such phenomena.

L. P. Horwitz; E. Z. Engelberg

2009-11-08T23:59:59.000Z

82

FINAL REPORT ON GDE GAP CELL  

SciTech Connect (OSTI)

A project has been undertaken to develop an electrochemical cell and support equipment for evaluation of a gas diffusion electrode-based, narrow-electrolyte-gap anode for SO{sub 2} oxidation in the hydrogen production cycle of the hybrid sulfur (HyS) process. The project supported the HyS development program at the Savannah River National Lab (SRNL). The benefits of using a gas diffusion electrode in conjunction with the narrow anolyte gap are being determined through electrochemical polarization testing under a variety conditions, and by comparison to results produced by SRNL and others using anode technologies that have no anolyte gap. These test results indicate that the NGA cell has low resistance suitable for use in the HyS electrolyzer, exhibits good efficiency at high current densities compared to the direct feed HyS electrolyzer, and indicates robust performance in extended testing over 65 hours. Seepage episodes were mostly caused by port clogging, which can be mitigated in future designs through minor modifications to the hardware. Significant reductions in sulfur crossover have not yet been demonstrated in the NGA configuration compared to in-house direct feed testing, but corroborative sulfur layer analysis is as yet incomplete. Further testing in a single-pass anolyte configuration is recommended for complete evaluation of steady-state electrochemical efficiency and SO{sub 2} crossover in the narrow gap configuration.

Herman, D.; Summers, W.; Danko, E.

2009-09-28T23:59:59.000Z

83

Spark gap device for precise switching  

DOE Patents [OSTI]

A spark gap device for precise switching of an energy storage capacitor into an exploding bridge wire load is disclosed. Niobium electrodes having a melting point of 2,415 degrees centrigrade are spaced apart by an insulating cylinder to define a spark gap. The electrodes are supported by conductive end caps which, together with the insulating cylinder, form a hermetically sealed chamber filled with an inert, ionizable gas, such as pure xenon. A quantity of solid radioactive carbon-14 within the chamber adjacent the spark gap serves as a radiation stabilizer. The sides of the electrodes and the inner wall of the insulating cylinder are spaced apart a sufficient distance to prevent unwanted breakdown initiation. A conductive sleeve may envelop the outside of the insulating member from the midpoint of the spark gap to the cap adjacent the cathode. The outer metallic surfaces of the device may be coated with a hydrogen-impermeable coating to lengthen the shelf life and operating life of the device. The device breaks down at about 1,700 volts for input voltage rates up to 570 volts/millisecond and allows peak discharge currents of up to 3,000 amperes from a 0.3 microfarad energy storage capacitor for more than 1,000 operations.

Boettcher, Gordon E. (Albuquerque, NM)

1984-01-01T23:59:59.000Z

84

Spark gap device for precise switching  

DOE Patents [OSTI]

A spark gap device for precise switching of an energy storage capacitor into an exploding bridge wire load is disclosed. Niobium electrodes having a melting point of 2,415 degrees centigrade are spaced apart by an insulating cylinder to define a spark gap. The electrodes are supported by conductive end caps which, together with the insulating cylinder, form a hermetically sealed chamber filled with an inert, ionizable gas, such as pure xenon. A quantity of solid radioactive carbon-14 within the chamber adjacent the spark gap serves as a radiation stabilizer. The sides of the electrodes and the inner wall of the insulating cylinder are spaced apart a sufficient distance to prevent unwanted breakdown initiation. A conductive sleeve may envelop the outside of the insulating member from the midpoint of the spark gap to the cap adjacent the cathode. The outer metallic surfaces of the device may be coated with a hydrogen-impermeable coating to lengthen the shelf life and operating life of the device. The device breaks down at about 1,700 volts for input voltage rates up to 570 volts/millisecond and allows peak discharge currents of up to 3,000 amperes from a 0.3 microfarad energy storage capacitor for more than 1,000 operations. 3 figs.

Boettcher, G.E.

1984-10-02T23:59:59.000Z

85

Bridging the Gap 2011 | ornl.gov  

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

1 1 Apr 05 2011 04-05-2011 08:00 AM - 04-06-2011 05:00 PM Oak Ridge National Laboratory's Partnerships Directorate will host Bridging the Gap, a unique technology commercialization event, April 5-6 at Oak Ridge National Laboratory. Oak Ridge, TN Oak Ridge National Laboratory CONTACT : Email: Cassie Lopez Phone:(865) 576-9294 Add to Calendar SHARE Oak Ridge National Laboratory's Partnerships Directorate will host Bridging the Gap, a unique technology commercialization event, April 5-6 at Oak Ridge National Laboratory. The event will provide investors and entrepreneurs opportunities to learn about promising ORNL technologies available for license and to hear from ORNL licensees seeking growth capital. There will also be opportunities to tour ORNL's world-class research facilities and network with some of the

86

Bridging the Gap: Linking Simulation and Testing  

SciTech Connect (OSTI)

The Materials Genome Initiative (MGI) which is a key enabler for the Advanced Manufacturing Partnership, announced in 2011 by U.S. President Barack Obama, was established to accelerate the development and deployment of advanced materials. The MGI is driven by the need to "bridge the gap" between (I) experimental results and computational analysis to enable the rapid development and validation of new mateirals, and (II) the processes required to convert these materials into useable goods.

Krajewski, Paul E.; Carsley, John; Stoudt, Mark R.; Hovanski, Yuri

2012-09-01T23:59:59.000Z

87

SHEEP MOUNTAIN URANIUM PROJECT CROOKS GAP, WYOMING  

E-Print Network [OSTI]

;PROJECT OVERVIEW ·Site Location·Site Location ·Fremont , Wyoming ·Existing Uranium Mine Permit 381C·Existing Uranium Mine Permit 381C ·Historical Operation ·Western Nuclear Crooks Gap Project ·Mined 1956 ­ 1988 and Open Pit Mining ·Current Mine Permit (381C) ·Updating POO, Reclamation Plan & Bond ·Uranium Recovery

88

Entanglement Sudden Death in Band Gaps  

E-Print Network [OSTI]

Using the pseudomode method, we evaluate exactly time-dependent entanglement for two independent qubits, each coupled to a non-Markovian structured environment. Our results suggest a possible way to control entanglement sudden death by modifying the qubit-pseudomode detuning and the spectrum of the reservoirs. Particularly, in environments structured by a model of a density-of-states gap which has two poles, entanglement trapping and prevention of entanglement sudden death occur in the weak-coupling regime.

Ying-Jie Zhang

2009-11-10T23:59:59.000Z

89

Fabrication of photonic band gap materials  

DOE Patents [OSTI]

A method for forming a periodic dielectric structure exhibiting photonic band gap effects includes forming a slurry of a nano-crystalline ceramic dielectric or semiconductor material and monodisperse polymer microspheres, depositing a film of the slurry on a substrate, drying the film, and calcining the film to remove the polymer microspheres therefrom. The film may be cold-pressed after drying and prior to calcining. The ceramic dielectric or semiconductor material may be titania, and the polymer microspheres may be polystyrene microspheres.

Constant, Kristen (Ames, IA); Subramania, Ganapathi S. (Ames, IA); Biswas, Rana (Ames, IA); Ho, Kai-Ming (Ames, IA)

2002-01-15T23:59:59.000Z

90

NSLS prototype small-gap undulator (PSGU)  

SciTech Connect (OSTI)

The NSLS Prototype Small-Gap Undulator (PSGU) will serve as a tool to study lifetime degradation and the onset of beam instabilities as the beam duct aperture is decreased. The device will consist of variable-gap vacuum vessel had a permanent magnet undulator, with independent magnet-gap control. The vacuum vessel design attempts to minimize both residual gas pressures and beam impedances. The undulator will be 320 mm long and utilizes a pure-permanent-magnet structure with 6 blocks per 16 mm period. For a nominal operating aperture of 4 mm, PSGU will produce a peak brightness in the fundamental and third harmonic of 7 {times} 10{sup 16} and 1 {times} 10{sup 16} photons{sm bullet}sec{sup {minus}1}{sm bullet}mrad{sup {minus}2}mm{sup {minus}2}{sm bullet}(0.1% BW){sup {minus}1} at photon energies of 2.5 keV and 7.5 keV, respectively. 5 refs., 3 figs., 2 tabs.

Stefan, P.M.; Solomon, L.; Krinsky, S. (Brookhaven National Lab., Upton, NY (United States)); Rakowsky, G. (Rockwell International Corp., Canoga Park, CA (United States). Rocketdyne Div.)

1991-01-01T23:59:59.000Z

91

Technical Standards, GENII- Gap Analsis - May 3, 2004 | Department of  

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

Technical Standards, GENII- Gap Analsis - May 3, 2004 Technical Standards, GENII- Gap Analsis - May 3, 2004 Technical Standards, GENII- Gap Analsis - May 3, 2004 May 3, 2004 Software Quality Assurance Improvement Plan: GENII Gap Analysis The GENII software, for radiological dispersion and consequence analysis, is one of the codes designated for the toolbox. To determine the actions needed to bring the GENII code into compliance with the SQA qualification criteria, and develop an estimate of the resources required to perform the upgrade, the Implementation Plan has committed to sponsoring a code-specific gap analysis document. Technical Standards, GENII- Gap Analsis More Documents & Publications Guidance on GENII computer code - July 6, 2004 Technical Standards, ALOHA-Gap Analysis - May 3, 2004 Technical Standards, MELCOR - Gap Analysis - May 3

92

Fact #610: February 15, 2010 All Sectors' Petroleum Gap | Department...  

Energy Savers [EERE]

10: February 15, 2010 All Sectors' Petroleum Gap Fact 610: February 15, 2010 All Sectors' Petroleum Gap Before 1989 the U.S. produced enough petroleum to meet the needs of the...

93

Fact #688: August 15, 2011 All Sectors' Petroleum Gap | Department...  

Energy Savers [EERE]

8: August 15, 2011 All Sectors' Petroleum Gap Fact 688: August 15, 2011 All Sectors' Petroleum Gap Before 1989 the U.S. produced enough petroleum to meet the needs of the...

94

Substrate-Induced Band-Gap Opening in Epitaxial Graphene  

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

Substrate-Induced Band-Gap Opening in Epitaxial Graphene Substrate-Induced Band-Gap Opening in Epitaxial Graphene Print Wednesday, 26 March 2008 00:00 Prospective challengers to...

95

Planar graphene-narrow-gap semiconductor-graphene heterostructure  

Science Journals Connector (OSTI)

A planar heterostructure composed of two graphene films between which a narrow-gap semiconductor ... paradox is absent when conical points of the graphene Brillouin zone are in the band gap...

P. V. Ratnikov; A. P. Silin

2008-11-01T23:59:59.000Z

96

To Bridge LEDs' Green Gap, Scientists Think Small  

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

To Bridge LEDs' Green Gap, Scientists Think Small To Bridge LEDs' Green Gap, Scientists Think Small Nanostructures Half a DNA Strand-Wide Show Promise for Efficient LEDs April 4,...

97

Substrate-induced band gap opening in epitaxial graphene  

E-Print Network [OSTI]

H.A. Electronic states of graphene nanoribbons studied withS.G. Louie. Energy gaps in graphene nanoribbons. Phys. Rev.band-gap engineering of graphene nanoribbons. Phys. Rev.

2008-01-01T23:59:59.000Z

98

Technical Standards, MACCS2, Gap Analysis - May 3, 2004 | Department...  

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

3, 2004 Technical Standards, MACCS2, Gap Analysis - May 3, 2004 May 3, 2004 Software Quality Assurance Improvement Plan: MACCS2 Gap Analysis The MACCS2 software, for radiological...

99

Functional Area Qualification Standard Gap Analysis Qualification Cards  

Broader source: Energy.gov [DOE]

FAQS Gap Analysis Qualification Cards outline the differences between the last and latest version of the FAQ Standard.

100

Intelligent Assistants for Filling Critical Gaps in GIS  

E-Print Network [OSTI]

Intelligent Assistants for Filling Critical Gaps in GIS A Research Program April 1992 David Lanter, Intelligent Assistants for Filling Critical Gaps In GIS, was sponsored by Southern California Edison Company: · An analysis of critical gaps in current geographic information systems (GIS) that impede their use for spatial

California at Santa Barbara, University of

Note: This page contains sample records for the topic "gap amor stadium" 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

Magneto-transport properties of gapped graphene  

Science Journals Connector (OSTI)

Based on the Kubo formula, we have studied the electron transport properties of a gapped graphene in the presence of a strong magnetic field. By solving the Dirac equation, we find that the Landau level spectra in two valleys differ from each other in that the n = 0 level in the K valley is located at top of the valence band, whereas it is at the bottom of the conduction band in the K' valley. Thus, in an individual valley, the symmetry between conduction and valence bands is broken by the presence of a magnetic field. By using the self-consistent Born approximation to treat the long range potential scattering, we formulate the diagonal and the Hall conductivities in terms of the Green function. To perform the numerical calculation, we find that a large bandgap can suppress the quantum Hall effect, owing to the enhancement of the bandgap squeezing the spacing between the low-lying Landau levels. On the other hand, if the bandgap is not very large, the odd integer quantum Hall effect experimentally, observed in the gapless graphene, remains in the gapped one. However, such a result does not indicate the half integer quantum Hall effect in an individual valley of the gapped graphene. This is because the heights of the Hall plateaux in either valley can be continuously tuned by the variation of the bandgap. More interestingly, we find that the height of the diagonal conductivity peak corresponding to the n = 0 Landau level is independent of the bandgap if the scattering is not very strong. In the weak scattering limit, we demonstrate analytically that such a peak takes a universal value e2/(h?), regardless of the bandgap.

Liwei Jiang; Yisong Zheng; Haidong Li; Honghai Shen

2010-01-01T23:59:59.000Z

102

Note On The Maximal Primes Gaps  

E-Print Network [OSTI]

This note presents a result on the maximal prime gap of the form p_(n+1) - p_n 0 is a constant, for any arbitrarily small real number e > 0, and all sufficiently large integer n > n_0. Equivalently, the result shows that any short interval [x, x + y], y => C(log x)^(1+e), contains prime numbers for all sufficiently large real numbers x => x_0 unconditionally. An application demonstrates that a prime p => x > 2 can be determined in deterministic polynomial time O(log(x)^8).

N. A. Carella

2015-02-05T23:59:59.000Z

103

Turbine blade tip gap reduction system  

SciTech Connect (OSTI)

A turbine blade sealing system for reducing a gap between a tip of a turbine blade and a stationary shroud of a turbine engine. The sealing system includes a plurality of flexible seal strips extending from a pressure side of a turbine blade generally orthogonal to the turbine blade. During operation of the turbine engine, the flexible seal strips flex radially outward extending towards the stationary shroud of the turbine engine, thereby reducing the leakage of air past the turbine blades and increasing the efficiency of the turbine engine.

Diakunchak, Ihor S.

2012-09-11T23:59:59.000Z

104

Complexified cones. Spectral gaps and variational principles  

E-Print Network [OSTI]

We consider contractions of complexified real cones, as recently introduced by Rugh in [Rugh10]. Dubois [Dub09] gave optimal conditions to determine if a matrix contracts a canonical complex cone. First we generalize his results to the case of complex operators on a Banach space and give precise conditions for the contraction and an improved estimate of the size of the associated spectral gap. We then prove a variational formula for the leading eigenvalue similar to the Collatz-Wielandt formula for a real cone contraction. Morally, both cases boil down to the study of suitable collections of 2 by 2 matrices and their contraction properties on the Riemann sphere.

Dubois, Loc

2010-01-01T23:59:59.000Z

105

Ideal Soliton Environment Using Parametric Band Gaps  

Science Journals Connector (OSTI)

Simultaneous solitary wave solutions for laser propagation in nonlinear parametric media with up to ( 3+1) dimensions are proved to exist. The combination of the large dispersion of a Bragg grating and the strong nonlinearity of ?(2) optical material results in stable behavior with short interaction distances and low power requirements. The solutions are obtained by using the effective mass approximation to reduce the coupled propagation equations to those describing a dispersive parametric nonlinear waveguide, and are verified by solving the complete set of coupled band-gap equations numerically.

H. He and P. D. Drummond

1997-06-09T23:59:59.000Z

106

Extended Supersymmetry in Gapped and Superconducting Graphene  

E-Print Network [OSTI]

In view of the many quantum field theoretical descriptions of graphene in $2+1$ dimensions, we present another field theoretical feature of graphene, in the presence of defects. Particularly, we shall be interested in gapped graphene in the presence of a domain wall and also for superconducting graphene in the presence of a vortex. As we explicitly demonstrate, the gapped graphene electrons that are localized on the domain wall are associated with four $N=2$ one dimensional supersymmetries, with each pair combining to form an extended $N=4$ supersymmetry with non-trivial topological charges. The case of superconducting graphene is more involved, with the electrons localized on the vortex being associated with $n$ one dimensional supersymmetries, which in turn combine to form an $N=2n$ extended supersymmetry with no-trivial topological charges. As we shall prove, all supersymmetries are unbroken, a feature closely related to the number of the localized fermions and also to the exact form of the associated oper...

Oikonomou, V K

2014-01-01T23:59:59.000Z

107

Extended Supersymmetry in Gapped and Superconducting Graphene  

E-Print Network [OSTI]

In view of the many quantum field theoretical descriptions of graphene in $2+1$ dimensions, we present another field theoretical feature of graphene, in the presence of defects. Particularly, we shall be interested in gapped graphene in the presence of a domain wall and also for superconducting graphene in the presence of a vortex. As we explicitly demonstrate, the gapped graphene electrons that are localized on the domain wall are associated with four $N=2$ one dimensional supersymmetries, with each pair combining to form an extended $N=4$ supersymmetry with non-trivial topological charges. The case of superconducting graphene is more involved, with the electrons localized on the vortex being associated with $n$ one dimensional supersymmetries, which in turn combine to form an $N=2n$ extended supersymmetry with no-trivial topological charges. As we shall prove, all supersymmetries are unbroken, a feature closely related to the number of the localized fermions and also to the exact form of the associated operators. In addition, the corresponding Witten index is invariant under compact and odd perturbations.

V. K. Oikonomou

2014-11-30T23:59:59.000Z

108

Pseudogap and Superconducting Gap in High-Temperature Superconductors  

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

Pseudogap and Superconducting Gap in Pseudogap and Superconducting Gap in High-Temperature Superconductors Two decades after the discovery of first high temperature superconductors, the microscopic mechanism of high-Tc superconductivity remains elusive. In conventional superconductors, it has been well established that electrons form so-called "Cooper pairs" to give rise to superconductivity. The pair binding manifests itself as an energy gap in many spectroscopic measurements. This energy gap, known as superconducting gap, appears at the superconducting transition temperature Tc where the resistance also vanishes. For high temperature superconductors, the story is more complicated. Over a wide region of compositions and temperatures, there exists an energy gap well above Tc. This energy gap is called pseudogap [1], because there is no direct correlation to the superconducting transition. The origin of this pseudogap and its relation to the superconducting gap are believed to hold the key for understanding the mechanism of high-Tc superconductivity - one of the outstanding problems in condensed matter physics. In this regard, researchers Kiyohisa Tanaka and Wei-Sheng Lee, along with their co-workers in Prof. Zhi-Xun Shen's group at Stanford University, have recently made an important discovery about the coexistence of two distinct energy gaps that have opposite doping dependence. Their observation not only provides a natural explanation for the contradictory results about the superconducting gap deduced from different experimental techniques, but also has profound implications on the mechanism of high-Tc superconductivity.

109

Arc voltage distribution skewness as an indicator of electrode gap during vacuum arc remelting  

DOE Patents [OSTI]

The electrode gap of a VAR is monitored by determining the skewness of a distribution of gap voltage measurements. A decrease in skewness indicates an increase in gap and may be used to control the gap. 4 figs.

Williamson, R.L.; Zanner, F.J.; Grose, S.M.

1998-01-13T23:59:59.000Z

110

Structural organization of gap junction channels  

Science Journals Connector (OSTI)

Gap junctions were initially described morphologically, and identified as semi-crystalline arrays of channels linking two cells. This suggested that they may represent an amenable target for electron and X-ray crystallographic studies in much the same way that bacteriorhodopsin has. Over 30 years later, however, an atomic resolution structural solution of these unique intercellular pores is still lacking due to many challenges faced in obtaining high expression levels and purification of these structures. A variety of microscopic techniques, as well as NMR structure determination of fragments of the protein, have now provided clearer and correlated views of how these structures are assembled and function as intercellular conduits. As a complement to these structural approaches, a variety of mutagenic studies linking structure and function have now allowed molecular details to be superimposed on these lower resolution structures, so that a clearer image of pore architecture and its modes of regulation are beginning to emerge.

Gina E. Sosinsky; Bruce J. Nicholson

2005-01-01T23:59:59.000Z

111

Software Quality Assurance Improvment Plan: CFAST Gap Analysis, Final Report  

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

EH-4.2.1.3-CFAST-Gap Analysis EH-4.2.1.3-CFAST-Gap Analysis Defense Nuclear Facilities Safety Board Recommendation 2002-1 Software Quality Assurance Improvement Plan Commitment 4.2.1.3: Software Quality Assurance Improvement Plan: CFAST Gap Analysis Final Report U.S. Department of Energy Office of Environment, Safety and Health 1000 Independence Ave., S.W. Washington, DC 20585-2040 May 2004 CFAST Gap Analysis May 2004 Final Report ii INTENTIONALLY BLANK CFAST Gap Analysis May 2004 Final Report iii FOREWORD This report documents the outcome of an evaluation of the Software Quality Assurance (SQA) attributes of the CFAST computer code for accident analysis applications, relative to established requirements. This evaluation, a "gap analysis," is performed to meet commitment 4.2.1.3 of the Department of Energy's

112

Technical Standards, MELCOR - Gap Analysis - May 3, 2004 | Department of  

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

MELCOR - Gap Analysis - May 3, 2004 MELCOR - Gap Analysis - May 3, 2004 Technical Standards, MELCOR - Gap Analysis - May 3, 2004 May 3, 2004 Software Quality Assurance Improvement Plan: MELCOR Gap Analysis This report documents the outcome of an evaluation of the Software Quality Assurance (SQA) attributes of the MELCOR computer code for leak path factor applications, relative to established software requirements. This evaluation, a "gap analysis," is performed to meet Commitment 4.2.1.3 of the Department of Energy's Implementation Plan to resolve SQA issues identified in the Defense Nuclear Facilities Safety Board Recommendation 2002-1. Technical Standards, MELCOR - Gap Analysis More Documents & Publications Technical Standards, Guidance on MELCOR computer code - May 3, 2004

113

Two-gap elliptic solutions of the Boussinesq equation  

SciTech Connect (OSTI)

Two-gap solutions of the Boussinesq equation are considered. It is shown that for almost every Riemann surface {gamma} of genus g=2 covering the elliptic surface it is possible to construct an elliptic (in x) two-gap solution of the Boussinesq equation. The existence of third- and fourth-order differential operators with elliptic 'two-gap' potentials having an arbitrary number of poles is also established. An example is given.

Smirnov, A O [Saint-Petersburg State University of Aerospace Instrumentation, Saint-Petersburg (Russian Federation)

1999-06-30T23:59:59.000Z

114

Sensitivity Analysis of the Gap Heat Transfer Model in BISON.  

SciTech Connect (OSTI)

This report summarizes the result of a NEAMS project focused on sensitivity analysis of the heat transfer model in the gap between the fuel rod and the cladding used in the BISON fuel performance code of Idaho National Laboratory. Using the gap heat transfer models in BISON, the sensitivity of the modeling parameters and the associated responses is investigated. The study results in a quantitative assessment of the role of various parameters in the analysis of gap heat transfer in nuclear fuel.

Swiler, Laura Painton; Schmidt, Rodney C.; Williamson, Richard (INL); Perez, Danielle (INL)

2014-10-01T23:59:59.000Z

115

Combined Heat and Power: Connecting the Gap between Markets and...  

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

Combined Heat and Power: Connecting the Gap between Markets and Utility Interconnection and Tariff Practices (Part I) Susanne Brooks, Brent Elswick, and R. Neal Elliott March 2006...

116

To Bridge LEDs' Green Gap, Scientists Think Small  

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

emitting diodes (LEDs), especially in the "green gap," a portion of the spectrum where LED efficiency plunges, simulations at the U.S. Department of Energy's National Energy...

117

FAQS Gap Analysis Qualification Card Civil Structural Engineering  

Broader source: Energy.gov [DOE]

Functional Area Qualification Standard Gap Analysis Qualification Cards outline the differences between the last and latest version of the FAQ Standard.

118

Substrate-Induced Band-Gap Opening in Epitaxial Graphene  

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

Substrate-Induced Band-Gap Opening in Epitaxial Graphene Print Prospective challengers to silicon, the long-reigning king of semiconductors for computer chips and other electronic...

119

FAQS Gap Analysis Qualification Card - Technical Training | Department...  

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

Description Technical Training Gap Analysis Qualification Card More Documents & Publications DOE-STD-1179-2004 DOE-HDBK-1078-94 FAQS Reference Guide - Technical Training...

120

Catalysis by Design: Bridging the Gap between Theory and Experiments...  

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

between Theory and Experiments Catalysis by Design: Bridging the Gap between Theory and Experiments Poster presentation at the 2007 Diesel Engine-Efficiency & Emissions Research...

Note: This page contains sample records for the topic "gap amor stadium" 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

FAQS Gap Analysis Qualification Card Nuclear Safety Specialist  

Broader source: Energy.gov [DOE]

Functional Area Qualification Standard Gap Analysis Qualification Cards outline the differences between the last and latest version of the FAQ Standard.

122

Information Gap Decision Theory based OPF with HVDC Connected ...  

E-Print Network [OSTI]

curve as well as the uncertainties of wind power generation. Information gap .... its own advantages and disadvantages, which are summarized as follows.

2014-12-01T23:59:59.000Z

123

Method for Creating Photonic Band Gap Materials - Energy Innovation...  

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

a photonic band gap. These microstructures have the potential to change the way optoelectronic devices, such as photodiodes, LEDs, and integrated optical circuit elements, are...

124

Minding the Gap Makes for More Efficient Solar Cells  

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

properties of these materials go through a dramatic change that makes them ideal for solar energy applications. These materials can go from indirect band gap semiconductors to...

125

Electronic materials with a wide band gap: recent developments  

Science Journals Connector (OSTI)

Usually, semiconductors with a band gap Eg 3 eV or larger are called wide band gap materials. Their optical emission can span the whole of the visible spectrum, enabling the development of devices for solid-state lighting. In addition, a large Eg results in a high electrical breakthrough field, which is interesting for high-power electronics.

Klimm, D.

2014-08-29T23:59:59.000Z

126

Rural Microfinance Service Delivery: Gaps, Inefficiencies and Emerging Solutions  

E-Print Network [OSTI]

Rural Microfinance Service Delivery: Gaps, Inefficiencies and Emerging Solutions Tapan S. Parikh emerged as one of the most promising avenues for stimulating rural economic devel- opment through local enterprise. In this paper we will discuss some of the major technology gaps faced by rural microfinance

Parikh, Tapan S.

127

ERDC/CERLTR-05-38 Determining Research Gaps  

E-Print Network [OSTI]

ERDC/CERLTR-05-38 Determining Research Gaps in Disturbance Data for Fort Bliss and a Conceptual-38 November 2005 Determining Research Gaps in Disturbance Data for Fort Bliss and a Conceptual Model Tamara Bliss #12;ABSTRACT Numerous research and outside monitoring efforts have been completed for Fort Bliss

Fehmi, Jeffrey S.

128

Substrate-Induced Band-Gap Opening in Epitaxial Graphene  

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

Substrate-Induced Band-Gap Opening in Epitaxial Graphene Print Substrate-Induced Band-Gap Opening in Epitaxial Graphene Print Prospective challengers to silicon, the long-reigning king of semiconductors for computer chips and other electronic devices, have to overcome silicon's superb collection of materials properties as well as sophisticated fabrication technologies refined by six decades of effort by materials scientists and engineers. Graphene, one of the latest contenders, has a rather impressive list of features of its own but has lacked a key characteristic of all semiconductors, an energy gap (band gap) in its electronic band structure. A multi-institutional collaboration under the leadership of researchers with Berkeley Lab and the University of California, Berkeley, have now demonstrated that growing an epitaxial film of graphene on a silicon carbide substrate results in a significant band gap, 0.26 electron volts (eV), an important step toward making graphene useful as a semiconductor.

129

Review of Used Nuclear Fuel Storage and Transportation Technical Gap  

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

Analysis Analysis Review of Used Nuclear Fuel Storage and Transportation Technical Gap Analysis While both wet and dry storage have been shown to be safe options for storing used nuclear fuel (UNF), the focus of the program is on dry storage of commercial UNF at reactor or centralized locations. This report focuses on the knowledge gaps concerning extended storage identified in numerous domestic and international investigations and provides the Used Fuel Disposition Campaign"s (UFDC) gap description, any alternate gap descriptions, the rankings by the various organizations, evaluation of the priority assignment, and UFDC-recommended action based on the comparison. Review of Used Nuclear Fuel Storage and Transportation Technical Gap Analysis More Documents & Publications

130

Spectral gap and logarithmic Sobolev constant for continuous spin systems  

E-Print Network [OSTI]

The aim of this paper is to study the spectral gap and the logarithmic Sobolev constant for continuous spin systems. A simple but general result for estimating the spectral gap of finite dimensional systems is given by Theorem 1.1, in terms of the spectral gap for one-dimensional marginals. The study of the topic provides us a chance, and it is indeed another aim of the paper, to justify the power of the results obtained previously. The exact order in dimension one (Proposition 1.4), and then the precise leading order and the explicit positive regions of the spectral gap and the logarithmic Sobolev constant for two typical infinite-dimensional models are presented (Theorems 6.2 and 6.3). Since we are interested in explicit estimates, the computations become quite involved. A long section (Section 4) is devoted to the study of the spectral gap in dimension one.

Mu-Fa Chen

2010-04-26T23:59:59.000Z

131

Substrate-Induced Band-Gap Opening in Epitaxial Graphene  

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

Substrate-Induced Band-Gap Opening in Epitaxial Graphene Print Substrate-Induced Band-Gap Opening in Epitaxial Graphene Print Prospective challengers to silicon, the long-reigning king of semiconductors for computer chips and other electronic devices, have to overcome silicon's superb collection of materials properties as well as sophisticated fabrication technologies refined by six decades of effort by materials scientists and engineers. Graphene, one of the latest contenders, has a rather impressive list of features of its own but has lacked a key characteristic of all semiconductors, an energy gap (band gap) in its electronic band structure. A multi-institutional collaboration under the leadership of researchers with Berkeley Lab and the University of California, Berkeley, have now demonstrated that growing an epitaxial film of graphene on a silicon carbide substrate results in a significant band gap, 0.26 electron volts (eV), an important step toward making graphene useful as a semiconductor.

132

Bridging the Gaps of High-Tc Superconductor  

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

Bridging the Gaps of High-Tc Bridging the Gaps of High-Tc Superconductor Since the discovery of high-temperature superconductor by Bednorz and Müller in 1986, this field has become one of the most important research topics in solid state physics. In the past 20 years many unconventional properties have been discovered in this new class of materials. These have challenged our conventional wisdom and driven the development of many novel theories. Among these discoveries, the most mysterious is probably the pseudogap phenomena: it has been observed that there is an energy gap above the superconducting transition temperature (TC) that persists over a wide range of temperatures and chemical compositions [1]. This peculiar behavior appears to be very different from a conventional superconductor. Here the electrons form so-called "Cooper pairs", which manifests itself as an energy gap in many spectroscopic measurements. This energy gap, known as superconducting gap, appears only below TC where the electrical resistance also vanishes (hence the name 'superconductor'). This important difference has stimulated lots of debate in the search of understanding high-TC superconductivity on questions such as: "What is the pseudogap?" and "What is its relation to superconducting gap and superconductivity at high temperature?"

133

Software Quality Assurance Improvment Plan: ALOHA Gap Analysis, Final Report  

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

Final-ALOHA Final-ALOHA Defense Nuclear Facilities Safety Board Recommendation 2002-1 Software Quality Assurance Improvement Plan Commitment 4.2.1.3: Software Quality Assurance Improvement Plan: ALOHA Gap Analysis Final Report U.S. Department of Energy Office of Environment, Safety and Health 1000 Independence Ave., S.W. Washington, DC 20585-2040 May 2004 ALOHA Gap Analysis May 2004 Final Report INTENTIONALLY BLANK ii ALOHA Gap Analysis May 2004 Final Report FOREWORD This report documents the outcome of an evaluation of the Software Quality Assurance (SQA) attributes of the chemical source term and atmospheric dispersion computer code, ALOHA 5.2.3, relative to established

134

Buffalo Gap II Wind Farm | Open Energy Information  

Open Energy Info (EERE)

Gap II Wind Farm Gap II Wind Farm Jump to: navigation, search Name Buffalo Gap II Wind Farm Facility Buffalo Gap II Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Developer AES Corp. Energy Purchaser Direct Energy Location Taylor County TX Coordinates 32.310556°, -100.149167° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":32.310556,"lon":-100.149167,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

135

Olene Gap Space Heating Low Temperature Geothermal Facility | Open Energy  

Open Energy Info (EERE)

Olene Gap Space Heating Low Temperature Geothermal Facility Olene Gap Space Heating Low Temperature Geothermal Facility Jump to: navigation, search Name Olene Gap Space Heating Low Temperature Geothermal Facility Facility Olene Gap Sector Geothermal energy Type Space Heating Location Klamath County, Oregon Coordinates 42.6952767°, -121.6142133° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[]}

136

Closing the Gender Gap in Energy Policy | Department of Energy  

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

the Gender Gap in Energy Policy the Gender Gap in Energy Policy Closing the Gender Gap in Energy Policy April 7, 2011 - 3:07pm Addthis Melanie A. Kenderdine Melanie A. Kenderdine Director of the Office of Energy Policy and Systems Analysis What are the key facts? There's not just a shortage of women in technical energy-related fields, there's also a shortage of women in energy policy. Women hold only 27 percent of the science and engineering jobs in the United States. Editor's Note: Join the conversation surrounding this year's Clean Energy Ministerial on Twitter via #CEM2. There's a well-documented gender gap for women in science and engineering, or women in the "STEM" fields of science, technology, engineering and math. The numbers are stark: According to the National Science Foundation, women hold only 27 percent of the science and

137

Suicide mortality gap between Francophones and Anglophones of Quebec, Canada  

Science Journals Connector (OSTI)

Few studies evaluate language-group differences in suicide mortality. This study assessed the suicide mortality gap between Francophones and Anglophones of Quebec, Canada according to age, sex, method...

Stephanie Burrows; Nathalie Auger

2013-07-01T23:59:59.000Z

138

Governing the gap: Forging safe science through relational regulation  

E-Print Network [OSTI]

Designed to close the ubiquitous gap between law on the books and law in action, management systems locate the standard setting and implementation of regulation within the regulated organization itself. Despite efforts to ...

Huising, Ruthanne

139

Air-gap sacrificial materials by initiated chemical vapor deposition  

E-Print Network [OSTI]

P(neopentyl methacrylate-co-ethylene glycol dimethacrylate) copolymer, abbreviated as P(npMAco-EGDA), was selected as the potential air-gap sacrificial material among possible combination of twenty monomers and four ...

Lee, Long Hua

2007-01-01T23:59:59.000Z

140

Synthesis of electromagnetic modes in photonic band gap fibers  

E-Print Network [OSTI]

In this paper, we report on the successful synthesis of three individual modes, HE11, TEo0, and TE02 for transmission in photonic band gap fibers at near infrared wavelengths. We measure the propagation losses of the HE11 ...

Hu, Qichao

2007-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "gap amor stadium" 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

SciTech Connect: Enhanced Superconducting Gaps in Trilayer High...  

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

Enhanced Superconducting Gaps in Trilayer High-Temperature Bi (2) Sr (2) Ca (2) Cu (3) O (10+delta) Cuprate Superconductor Citation Details In-Document Search Title: Enhanced...

142

Columbia Gorge Gap Winds: Their Climatological Influence and Synoptic Evolution  

Science Journals Connector (OSTI)

This paper quantifies the impact of the Columbia Gorge on the weather and climate within and downstream of this mesoscale gap and examines the influence of synoptic-scale flow on gorge weather. Easterly winds occur more frequently and are ...

Justin Sharp; Clifford F. Mass

2004-12-01T23:59:59.000Z

143

References on Spectral Gaps, May 2006, Palo Alto, CA  

E-Print Network [OSTI]

gaps for Schdinger operators with symmetric single well potentials and related ... [21] S. G. Bobkov, Isoperimetric and Analytic Inequalities for Log-Concave. Probability .... Mathematical Physics (Birmingham, Alabama, 1986), Lect. Notes in

2006-05-19T23:59:59.000Z

144

Permanent-magnet-less machine having an enclosed air gap  

DOE Patents [OSTI]

A permanent magnet-less, brushless synchronous system includes a stator that generates a magnetic rotating field when sourced by an alternating current. An uncluttered rotor disposed within the magnetic rotating field is spaced apart from the stator to form an air gap relative to an axis of rotation. A stationary excitation core spaced apart from the uncluttered rotor by an axial air gap and a radial air gap substantially encloses the stationary excitation core. Some permanent magnet-less, brushless synchronous systems include stator core gaps to reduce axial flux flow. Some permanent magnet-less, brushless synchronous systems include an uncluttered rotor coupled to outer laminations. The quadrature-axis inductance may be increased in some synchronous systems. Some synchronous systems convert energy such as mechanical energy into electrical energy (e.g., a generator); other synchronous systems may convert any form of energy into mechanical energy (e.g., a motor).

Hsu, John S. (Oak Ridge, TN)

2012-02-07T23:59:59.000Z

145

Proper Sustainability: GAP Grant Proposal Work Plan Strategy Webinar  

Office of Energy Efficiency and Renewable Energy (EERE)

In this webinar I will discuss the new GAP grant requirements for tribal environmental programs and strategies for crafting a work plan that focuses on capacity building activities. My goal is to...

146

Beneath the surface: The decline in gender injury gap  

Science Journals Connector (OSTI)

Abstract Gender differences in the labor market are typically measured by the wage gap. In this paper, we investigate how extending the analysis to an additional job amenity, namely workplace safety, may shed new light on the evolution of gender differences. Our results show that focusing on one unique measure of the gender gap may provide a biased view of the actual progress of women in the labor market. In our data, a significant reduction in the wage gap has been accompanied by a relative increase in injury risk for some groups of workers, e.g. low-skilled female workers. The decreased gender wage gap for these workers does not necessarily imply an overall improvement in their labor market outcomes.

Tiziano Razzolini; Roberto Leombruni; Giovanni Mastrobuoni; Mario Pagliero

2014-01-01T23:59:59.000Z

147

Closing gaps in the human genome using sequencing by synthesis  

E-Print Network [OSTI]

The most recent release of the finished human genome contains 260 euchromatic gaps (excluding chromosome Y). Recent work has helped explain a large number of these unresolved regions as 'structural' in nature. Another class ...

Arachchi, Harindra M.

148

Hydrogeologic Model for the Gable Gap Area, Hanford Site  

SciTech Connect (OSTI)

Gable Gap is a structural and topographic depression between Gable Mountain and Gable Butte within the central Hanford Site. It has a long and complex geologic history, which includes tectonic uplift synchronous with erosional downcutting associated with the ancestral Columbia River during both Ringold and Cold Creek periods, and by the later Ice Age (mostly glacial Lake Missoula) floods. The gap was subsequently buried and partially backfilled by mostly coarse-grained, Ice Age flood deposits (Hanford formation). Erosional remnants of both the Ringold Formation and Cold Creek unit locally underlie the high-energy flood deposits. A large window exists in the gap where confined basalt aquifers are in contact with the unconfined suprabasalt aquifer. Several paleochannels, of both Hanford and Ringold Formation age, were eroded into the basalt bedrock across Gable Gap. Groundwater from the Central Plateau presently moves through Gable Gap via one or more of these shallow paleochannels. As groundwater levels continue to decline in the region, groundwater flow may eventually be cut off through Gable Gap.

Bjornstad, Bruce N.; Thorne, Paul D.; Williams, Bruce A.; Last, George V.; Thomas, Gregory S.; Thompson, Michael D.; Ludwig, Jami L.; Lanigan, David C.

2010-09-30T23:59:59.000Z

149

Investigating the book-tax income gap : factors which affect the gap and details regarding its most significant component  

E-Print Network [OSTI]

(cont.) In total, my thesis suggests that recent changes in the book-tax income gap may be exogenous and transitory, due to changes to the calculation of book income, general business conditions or other factors which ...

Seidman, Jeri

2008-01-01T23:59:59.000Z

150

Gap formation and stability in non-isothermal protoplanetary discs  

E-Print Network [OSTI]

Several observations of transition discs show lopsided dust-distributions. A potential explanation is the formation of a large-scale vortex acting as a dust-trap at the edge of a gap opened by a giant planet. Numerical models of gap-edge vortices have thus far employed locally isothermal discs, but the theory of this vortex-forming or `Rossby wave' instability was originally developed for adiabatic discs. We generalise the study of planetary gap stability to non-isothermal discs using customised numerical simulations of disc-planet systems where the planet opens an unstable gap. We include in the energy equation a simple cooling function with cooling timescale $t_c=\\beta\\Omega_k^{-1}$, where $\\Omega_k$ is the Keplerian frequency, and examine the effect of $\\beta$ on the stability of gap edges and vortex lifetimes. We find increasing $\\beta$ lowers the growth rate of non-axisymmetric perturbations, and the dominant azimuthal wavenumber $m$ decreases. We find a quasi-steady state consisting of one large-scale, ...

Les, Robert

2015-01-01T23:59:59.000Z

151

Buffalo Gap 3 Wind Farm | Open Energy Information  

Open Energy Info (EERE)

Buffalo Gap 3 Wind Farm Buffalo Gap 3 Wind Farm Facility Buffalo Gap 3 Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner AES Wind Generation Developer AES Wind Generation Energy Purchaser Direct Energy Location TX Coordinates 32.310556°, -100.149167° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":32.310556,"lon":-100.149167,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

152

Lower bounds to the spectral gap of Davies generators  

SciTech Connect (OSTI)

We construct lower bounds to the spectral gap of a family of Lindblad generators known as Davies maps. These maps describe the thermalization of quantum systems weakly coupled to a heat bath. The steady state of these systems is given by the Gibbs distribution with respect to the system Hamiltonian. The bounds can be evaluated explicitly, when the eigenbasis and the spectrum of the Hamiltonian is known. A crucial assumption is that the spectrum of the Hamiltonian is non-degenerate. Furthermore, we provide a counterexample to the conjecture, that the convergence rate is always determined by the gap of the associated Pauli master equation. We conclude that the full dynamics of the Lindblad generator has to be considered. Finally, we present several physical example systems for which the bound to the spectral gap is evaluated.

Temme, Kristan [Center for Theoretical Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States)] [Center for Theoretical Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States)

2013-12-15T23:59:59.000Z

153

Vortex and gap generation in gauge models of graphene  

E-Print Network [OSTI]

Effective quantum field theoretical continuum models for graphene are investigated. The models include a complex scalar field and a vector gauge field. Different gauge theories are considered and their gap patterns for the scalar, vector, and fermion excitations are investigated. Different gauge groups lead to different relations between the gaps, which can be used to experimentally distinguish the gauge theories. In this class of models the fermionic gap is a dynamic quantity. The finite-energy vortex solutions of the gauge models have the flux of the "magnetic field" quantized, making the Bohm-Aharonov effect active even when external electromagnetic fields are absent. The flux comes proportional to the scalar field angular momentum quantum number. The zero modes of the Dirac equation show that the gauge models considered here are compatible with fractionalization.

O. Oliveira; C. E. Cordeiro; A. Delfino; W. de Paula; T. Frederico

2010-12-21T23:59:59.000Z

154

Origin of the charge gap in LaMnPO  

Science Journals Connector (OSTI)

We present high temperature inelastic neutron scattering and magnetic susceptibility measurements of the antiferromagnetic insulator LaMnPO that are consistent with the presence of two-dimensional magnetic correlations up to a temperature Tmax?700K?TN=375 K, the Nel temperature. Optical transmission measurements show the T=300 K direct charge gap ?=1 eV has decreased only marginally by 500 K and suggest it decreases by only 10% at Tmax. Density functional theory and dynamical mean-field theory calculations reproduce a direct charge gap in paramagnetic LaMnPO only when a strong Hund's coupling JH=0.9 eV is included, as well as on-site Hubbard U=8 eV. Our results show that LaMnPO is a Mott-Hund's insulator, in which the charge gap is rather insensitive to antiferromagnetic exchange coupling.

D. E. McNally; J. W. Simonson; K. W. Post; Z. P. Yin; M. Pezzoli; G. J. Smith; V. Leyva; C. Marques; L. DeBeer-Schmitt; A. I. Kolesnikov; Y. Zhao; J. W. Lynn; D. N. Basov; G. Kotliar; M. C. Aronson

2014-11-18T23:59:59.000Z

155

WORKSHOP REPORT:Light-Duty Vehicles Technical Requirements and Gaps for Lightweight and Propulsion Materials  

Broader source: Energy.gov [DOE]

WORKSHOP REPORT:Light-Duty Vehicles Technical Requirements and Gaps for Lightweight and Propulsion Materials

156

Quantifying yield gaps in wheat production in Russia  

Science Journals Connector (OSTI)

Crop yields must increase substantially to meet the increasing demands for agricultural products. Crop yield increases are particularly important for Russia because low crop yields prevail across Russia's widespread and fertile land resources. However, reliable data are lacking regarding the spatial distribution of potential yields in Russia, which can be used to determine yield gaps. We used a crop growth model to determine the yield potentials and yield gaps of winter and spring wheat at the provincial level across European Russia. We modeled the annual yield potentials from 1995 to 2006 with optimal nitrogen supplies for both rainfed and irrigated conditions. Overall, the results suggest yield gaps of 1.512.10 t ha?1, or 4452% of the yield potential under rainfed conditions. Under irrigated conditions, yield gaps of 3.143.30 t ha?1, or 6263% of the yield potential, were observed. However, recurring droughts cause large fluctuations in yield potentials under rainfed conditions, even when the nitrogen supply is optimal, particularly in the highly fertile black soil areas of southern European Russia. The highest yield gaps (up to 4 t ha?1) under irrigated conditions were detected in the steppe areas in southeastern European Russia along the border of Kazakhstan. Improving the nutrient and water supply and using crop breeds that are adapted to the frequent drought conditions are important for reducing yield gaps in European Russia. Our regional assessment helps inform policy and agricultural investors and prioritize research that aims to increase crop production in this important region for global agricultural markets.

Florian Schierhorn; Monireh Faramarzi; Alexander V Prishchepov; Friedrich J Koch; Daniel Mller

2014-01-01T23:59:59.000Z

157

Sub-10-nanometre metallic gaps for use in molecular electronics  

E-Print Network [OSTI]

gaps as small as sub-10 nm. Image from (8). Gaps can also be created by trapping gold nanoparticles between large-separation electrodes using an AC field, and then breaking the bridge by applying a large DC 5 1.2 Review of Related Work voltage (16... .3 Simmons Tunnelling Model grown QDs because their local environment is more stable. This susceptibility to electric fields will be apparent in our measurements, as discussed in 7.6. No matter the nature of the excitation, QDs may emit photons when...

Curtis, Kellye Suzanne

2012-07-03T23:59:59.000Z

158

The role of the energy gap in protein folding dynamics  

E-Print Network [OSTI]

The dynamics of folding of proteins is studied by means of a phenomenological master equation. The energy distribution is taken as a truncated exponential for the misfolded states plus a native state sitting below the continuum. The influence of the gap on the folding dynamics is studied, for various models of the transition probabilities between the different states of the protein. We show that for certain models, the relaxation to the native state is accelerated by increasing the gap, whereas for others it is slowed down .

Estelle Pitard; Henri Orland

1998-11-17T23:59:59.000Z

159

An investigation on reliable passivation of GaP  

E-Print Network [OSTI]

reports the results of a study of sputtered Silicon Nitride 3N4) and Anodic Oxide as passivating techniques for Gallium Phosphide. Anodic Oxide was grown on GaP by anodizing the semiconductor in 30% hydrogen peroxide. The resulting oxide had an index... reports the results of a study of sputtered Silicon Nitride 3N4) and Anodic Oxide as passivating techniques for Gallium Phosphide. Anodic Oxide was grown on GaP by anodizing the semiconductor in 30% hydrogen peroxide. The resulting oxide had an index...

Greaves King, Carlos A.

2012-06-07T23:59:59.000Z

160

START-GAP3/DLC3 is a GAP for RhoA and Cdc42 and is localized in focal adhesions regulating cell morphology  

SciTech Connect (OSTI)

In the human genome there are three genes encoding RhoGAPs that contain the START (steroidogenic acute regulatory protein (StAR)-related lipid transfer)-domain. START-GAP3/DLC3 is a tumor suppressor gene similar to two other human START-GAPs known as DLC1 or DLC2. Although expression of START-GAP3/DLC3 inhibits the proliferation of cancer cells, its molecular function is not well understood. In this study we carried out biochemical characterization of START-GAP3/DLC3, and explored the effects of its expression on cell morphology and intracellular localization. We found that START-GAP3/DLC3 serves as a stimulator of PLC{delta}1 and as a GAP for both RhoA and Cdc42 in vitro. Moreover, we found that the GAP activity is responsible for morphological changes. The intracellular localization of endogenous START-GAP3/DLC3 was explored by immunocytochemistry and was revealed in focal adhesions. These results indicate that START-GAP3/DLC3 has characteristics similar to other START-GAPs and the START-GAP family seems to share common characteristics.

Kawai, Katsuhisa; Kiyota, Minoru; Seike, Junichi; Deki, Yuko [Graduate School of Life Science, University of Hyogo, Harima Science Garden City, Hyogo-ken 678-1297 (Japan); Yagisawa, Hitoshi [Graduate School of Life Science, University of Hyogo, Harima Science Garden City, Hyogo-ken 678-1297 (Japan)], E-mail: yagisawa@sci.u-hyogo.ac.jp

2007-12-28T23:59:59.000Z

Note: This page contains sample records for the topic "gap amor stadium" 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

Bridging the Efficiency Gap: Commercial Packaged Rooftop Air Conditioners  

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

Bridging the Efficiency Gap: Commercial Packaged Rooftop Air Conditioners Bridging the Efficiency Gap: Commercial Packaged Rooftop Air Conditioners Title Bridging the Efficiency Gap: Commercial Packaged Rooftop Air Conditioners Publication Type Conference Proceedings Year of Publication 2000 Authors Shugars, John, Philip Coleman, Christopher T. Payne, and Laura Van Wie McGrory Conference Name Proceedings from the 2000 ACEEE Summer Study on Energy Efficiency in Buildings Volume 10 Pagination 217-226 Date Published 01/2000 Abstract The energy efficiency ofmany products has increased markedly over the past decade. A conspicuous exception to this trend is commercialpackaged rooftop air conditioners, which have experiencedlittle to no efficiency improvement since 1992 when the Energy Policy Act of 1992 imposed federal minimum standards. Packaged rooftop units have been estimated to use on the order of76 billion kWh annually in the US, at a cost ofroughly $5.6 billion. Sales of these units are growing, and the majority of units sold have energy efficiency ratios (EERs) at orjust above the current national minimum efficiency standards. In this paper we document the static efficiencies ofcommercialpackaged air conditioners, explore the reasons behindthis efficiency gap, and assess opportunities for overcoming the barriers to efficiency improvements in these products.

162

BRIDGING THE GAP BETWEEN BUILDING SCIENCE AND DESIGN STUDIOS  

E-Print Network [OSTI]

in the building industry and, to be effective, they need to be integrated into architectural design from, there is a lack of courses that allow for integrated building design through consideration of multiple performanceBRIDGING THE GAP BETWEEN BUILDING SCIENCE AND DESIGN STUDIOS KONSTANTINOS PAPAMICHAEL AND VINEETA

163

RIFLE GAP RESERVOIR FISHERY INVESTIGATION Photo: Willow Hibbs  

E-Print Network [OSTI]

in western Colorado, hosts a popular recreational fishery. Historically, stocked rainbow and brown trout have Department of Fish, Wildlife and Conservation Biology, Colorado State University Tel: 970-491-5002 email, Wildlife and Conservation Biology, Colorado State University March 2009 #12;Rifle Gap Reservoir Fishery

164

Topology of Local Health Officials' Advice Networks: Mind the Gaps  

E-Print Network [OSTI]

, evidence-based programs, and service delivery, and health care reform are innovations Author AffiliationsTopology of Local Health Officials' Advice Networks: Mind the Gaps Jacqueline Merrill, RN, MPH: To determine how a health officials' advice network might contribute to a high-performing public health systems

Sadeh, Norman M.

165

Abstract Local Reasoning for Concurrent Libraries: Mind the Gap  

E-Print Network [OSTI]

considerable work on combining lo- cal reasoning with abstraction. There are two main approaches. One approach, truly abstract reasoning of a tree module (such as DOM) works with predicates based on connecting treeMFPS 2014 Abstract Local Reasoning for Concurrent Libraries: Mind the Gap Philippa Gardner, Azalea

Gardner, Philippa

166

Vehicle Technologies Office: Fact #516: April 28, 2008 The Petroleum Gap  

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

6: April 28, 6: April 28, 2008 The Petroleum Gap to someone by E-mail Share Vehicle Technologies Office: Fact #516: April 28, 2008 The Petroleum Gap on Facebook Tweet about Vehicle Technologies Office: Fact #516: April 28, 2008 The Petroleum Gap on Twitter Bookmark Vehicle Technologies Office: Fact #516: April 28, 2008 The Petroleum Gap on Google Bookmark Vehicle Technologies Office: Fact #516: April 28, 2008 The Petroleum Gap on Delicious Rank Vehicle Technologies Office: Fact #516: April 28, 2008 The Petroleum Gap on Digg Find More places to share Vehicle Technologies Office: Fact #516: April 28, 2008 The Petroleum Gap on AddThis.com... Fact #516: April 28, 2008 The Petroleum Gap In 1989 the transportation sector petroleum consumption surpassed U.S. petroleum production for the first time, creating a gap that must be met

167

Developing Secure Power Systems Professional Competence: Alignment and Gaps  

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

Developing Secure Power Systems Professional Competence: Alignment Developing Secure Power Systems Professional Competence: Alignment and Gaps in Workforce Development Programs - Phase 2 (July/August 2013) Developing Secure Power Systems Professional Competence: Alignment and Gaps in Workforce Development Programs - Phase 2 (July/August 2013) DOE has recognized that the electricity industry needs workforce development resources that can aid in the accelerating need for Secure Power Systems Professionals, while at the same time identifying capabilities and competencies to protect and enable the modernized grid currently being built. In the spring of 2011 a project was initiated to identify those capabilities and competencies along with assessing the need and qualifications for a certification program for Secure Power Systems

168

Microsoft Word - IMBA Gap Analysis Final 20060831.doc  

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

DOE/EH-0711 DOE/EH-0711 Gap Analysis for IMBA and DOE Safety Software Central Registry Recommendation Final U.S. Department of Energy Office of Environment, Safety and Health 1000 Independence Avenue, S.W. Washington, D.C. 20585-2040 August 2006 DOE/EH-0711 i INTENTIONALLY BLANK DOE/EH-0711 ii FOREWORD This report documents the outcome of an evaluation of the safety software quality assurance attributes of the Integrated Modules for Bioassay Analysis (IMBA) Expert (tm) USDOE-Edition and Professional Plus computer products relative to the safety software requirements identified in DOE O 414.1C, Quality Assurance. This evaluation, a gap analysis, is performed according to DOE G 414.1-4 and is a requisite

169

Pleasant Gap, Pennsylvania: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Gap, Pennsylvania: Energy Resources Gap, Pennsylvania: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 40.8681177°, -77.7466665° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":40.8681177,"lon":-77.7466665,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

170

Band-Gap Engineering of Carbon Nanotubes with Grain Boundaries  

SciTech Connect (OSTI)

Structure and electronic properties of carbon nanotubes (CNTs) with grain boundaries (GBs) are investigated using density-functional calculations, where the GBs parallel and perpendicular to the tube axis are considered. Simulation results show that the GBs have a great effect on the electronic properties of the CNTs. For the GBs along the tube axis, the CNTs are narrow or zero band gap (<0.16 eV) materials, independent of the misorientation angle and diameter. For the GBs perpendicular to the tube axis, localized electronic states appear within the GBs regions, leading to a larger band gap of up to 0.6 eV. It is convenient to transport and localize the electrons and holes by engineering the GBs. These findings are of great significance for developing carbon-based nanomaterials and electronic devices.

Wang, Zhiguo; Zhou, Yungang; Zhang, Yanwen; Gao, Fei

2012-01-26T23:59:59.000Z

171

Damping of lower hybrid waves in large spectral gap configurations  

SciTech Connect (OSTI)

Extensive experimental data support reliable power deposition and current drive by lower-hybrid (LH) waves in conditions where a large spectral gap exists between the nominal parallel index of refraction prescribed by the antenna characteristics and phasing, and that required for significant Landau damping to take place. We argue that only a significant modification of the initial spectrum at the plasma edge could explain experimental observations. Based on this assumption, a new prescription for reliable simulations of LH current drive using ray-tracing and Fokker-Planck modelling is proposed. A remarkable agreement between experimental observations in the Tore Supra tokamak and simulations is obtained for relevant parametric scans, including electron density and LH waveguide phasing. In an effort to investigate the possible role of fluctuations, it is shown that the spectral gap can be bridged dynamically in the presence of a fluctuating LH spectrum.

Decker, J.; Peysson, Y.; Artaud, J.-F.; Nilsson, E.; Ekedahl, A.; Goniche, M.; Hillairet, J.; Mazon, D. [CEA, IRFM, F-13108 Saint Paul lez Durance (France)

2014-02-12T23:59:59.000Z

172

Valley pair qubits in double quantum dots of gapped graphene  

E-Print Network [OSTI]

The rise of graphene opens a new door to qubit implementation, as discussed in the recent proposal of valley pair qubits in double quantum dots of gapped graphene (Wu et al., arXiv: 1104.0443 [cond-mat.mes-hall]). The work here presents the comprehensive theory underlying the proposal. It discusses the interaction of electrons with external magnetic and electric fields in such structures. Specifically, it examines a strong, unique mechanism, i.e., the analogue of the 1st-order relativistic effect in gapped graphene. This mechanism is state mixing free and allows, together with the electrically tunable exchange coupling, a fast, all-electric manipulation of qubits via electric gates, in the time scale of ns. The work also looks into the issue of fault tolerance in a typical case, yielding at 10oK a long qubit coherence time (~O(ms)).

G. Y. Wu; N. -Y. Lue; L. Chang

2011-07-03T23:59:59.000Z

173

The information gap in corporate annual reports: evidence from Egypt  

Science Journals Connector (OSTI)

This study explores whether an information gap exists for six types of corporate disclosure in Egypt, where International Accounting Standards (IAS) apply but penalties for non-compliance are limited. It also investigates whether low compliance with mandatory disclosure can be explained by low levels of demand for this type of information among local financial analysts. The results identify a significant gap between actual disclosure practices of companies for various types of disclosure and market perceptions of this practice. Our findings also suggest that low compliance with disclosure requirements in Egypt is not driven by low levels of demand from local financial analysts, because these items of information are perceived as useful for investment decision making.

Omaima A.G. Hassan; Gianluigi Giorgioni; Peter Romilly; David M. Power

2012-01-01T23:59:59.000Z

174

Band-Gap Engineering of Carbon Nanotubes with Grain Boundaries  

SciTech Connect (OSTI)

Structure and electronic properties of carbon nanotubes (CNTs) with grain boundaries (GBs) are investigated using density-functional calculations, where the GBs parallel and perpendicular to the tube axis are considered. Simulation results show that the GBs have a great effect on the electronic properties of the CNTs. For the GBs along the tube axis, the CNTs are narrow or zero band gap (<0.16 eV) materials, independent of the misoritentaion angle and diameter. For the GBs perpendicular to the tube axis, localized electronic states appear within the GBs regions, leading to a larger band gap of up to 0.6 eV. It is convenient to transport and localize the electrons and holes by engineering the GBs. These findings are of great significance for developing carbon-based nanomaterials and electronic devices.

Wang, Zhiguo [Department of Applied Physics, University of Electronic Science and Technology of China; Zhou, Yungang [Department of Applied Physics, University of Electronic Science and Technology of China; Zhang, Yanwen [ORNL; Gao, Fei [ORNL

2011-01-01T23:59:59.000Z

175

Spark gap switch system with condensable dielectric gas  

DOE Patents [OSTI]

A spark gap switch system is disclosed which is capable of operating at a high pulse rate comprising an insulated switch housing having a purging gas entrance port and a gas exit port, a pair of spaced apart electrodes each having one end thereof within the housing and defining a spark gap therebetween, an easily condensable and preferably low molecular weight insulating gas flowing through the switch housing from the housing, a heat exchanger/condenser for condensing the insulating gas after it exits from the housing, a pump for recirculating the condensed insulating gas as a liquid back to the housing, and a heater exchanger/evaporator to vaporize at least a portion of the condensed insulating gas back into a vapor prior to flowing the insulating gas back into the housing.

Thayer, III, William J. (Kent, WA)

1991-01-01T23:59:59.000Z

176

Technical Standards, CFAST-Gap Analysis - May 3, 2004 | Department of  

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

Gap Analysis - May 3, 2004 Gap Analysis - May 3, 2004 Technical Standards, CFAST-Gap Analysis - May 3, 2004 May 3, 2004 DOE-EH-4.2.1.3-CFAST-Gap Analysis, Software Quality Assurance Improvement Plan: CFAST Gap Analysis This report documents the outcome of an evaluation of the Software Quality Assurance (SQA) attributes of the CFAST computer code for accident analysis applications, relative to established requirements. This evaluation, a "gap analysis," is performed to meet commitment 4.2.1.3 of the Department of Energy's Implementation Plan to resolve SQA issues identified in the Defense Nuclear Facilities Safety Board Recommendation 2002-1. Technical Standards, CFAST-Gap Analysis More Documents & Publications Technical Standards, CFAST-Code Guidance - July 23, 2004 Technical Standards, MELCOR - Gap Analysis - May 3, 2004

177

Vehicle Technologies Office: Fact #414: March 6, 2006 The Petroleum Gap  

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

4: March 6, 2006 4: March 6, 2006 The Petroleum Gap to someone by E-mail Share Vehicle Technologies Office: Fact #414: March 6, 2006 The Petroleum Gap on Facebook Tweet about Vehicle Technologies Office: Fact #414: March 6, 2006 The Petroleum Gap on Twitter Bookmark Vehicle Technologies Office: Fact #414: March 6, 2006 The Petroleum Gap on Google Bookmark Vehicle Technologies Office: Fact #414: March 6, 2006 The Petroleum Gap on Delicious Rank Vehicle Technologies Office: Fact #414: March 6, 2006 The Petroleum Gap on Digg Find More places to share Vehicle Technologies Office: Fact #414: March 6, 2006 The Petroleum Gap on AddThis.com... Fact #414: March 6, 2006 The Petroleum Gap Since 1989, the transportation sector alone has used more petroleum than the United States produces. The current projections indicate that by the

178

Fact #837: September 8, Gap between Net Imports and Total Imports...  

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

7: September 8, Gap between Net Imports and Total Imports of Petroleum is Widening Fact 837: September 8, Gap between Net Imports and Total Imports of Petroleum is Widening Net...

179

Nanoscale gap filling for phase change material by pulsed deposition and inductively coupled plasma etching  

Science Journals Connector (OSTI)

The gap filling of phase change material has become a critical module in the fabrication process of phase change random access memory (PCRAM) as the ... . We achieved void free gap filling of phase change material

W. C. Ren; B. Liu; Z. T. Song; X. Z. Jing; B. C. Zhang; Y. H. Xiang

2013-09-01T23:59:59.000Z

180

Engineered nanomaterials: knowledge gaps in fate, exposure, toxicity, and future directions  

Science Journals Connector (OSTI)

The aim of this study is to identify current knowledge gaps in fate, exposure, and toxicity of engineered nanomaterials (ENMs), highlight research gaps, and suggest future research directions. Humans and other living organisms are exposed to ENMs during ...

Arun Kumar, Prashant Kumar, Ananthitha Anandan, Teresa F. Fernandes, Godwin A. Ayoko, George Biskos

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "gap amor stadium" 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

Variation of treefall gap characteristics in an East Texas bottomland hardwood forest: effects of microtopography  

E-Print Network [OSTI]

Treefall gaps, formed as a result of small-scale disturbances, allow seedling recruitment and growth in late-successional forests. Many factors contribute to gap regime heterogeneity within and among forest stands, including wind and fire patterns...

Almquist, Benjamin Eric

1998-01-01T23:59:59.000Z

182

Of horseshoes and heliotropes: Dynamics of dust in the Encke Gap M.M. Hedman a,  

E-Print Network [OSTI]

Of horseshoes and heliotropes: Dynamics of dust in the Encke Gap M.M. Hedman a, , J.A. Burns a located within the Cassini Division's Laplace Gap demonstrates ``heliotropic'' behavior: its geometric

Hamilton, Douglas P.

183

Controlling electrode gap during vacuum arc remelting at low melting current  

DOE Patents [OSTI]

An apparatus and method are disclosed for controlling electrode gap in a vacuum arc remelting furnace, particularly at low melting currents. Spectrographic analysis is performed of the metal vapor plasma, from which estimates of electrode gap are derived. 5 figs.

Williamson, R.L.; Zanner, F.J.; Grose, S.M.

1997-04-15T23:59:59.000Z

184

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

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

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

185

Vehicle Technologies Office: Fact #465: April 16, 2007 The Petroleum Gap  

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

5: April 16, 5: April 16, 2007 The Petroleum Gap to someone by E-mail Share Vehicle Technologies Office: Fact #465: April 16, 2007 The Petroleum Gap on Facebook Tweet about Vehicle Technologies Office: Fact #465: April 16, 2007 The Petroleum Gap on Twitter Bookmark Vehicle Technologies Office: Fact #465: April 16, 2007 The Petroleum Gap on Google Bookmark Vehicle Technologies Office: Fact #465: April 16, 2007 The Petroleum Gap on Delicious Rank Vehicle Technologies Office: Fact #465: April 16, 2007 The Petroleum Gap on Digg Find More places to share Vehicle Technologies Office: Fact #465: April 16, 2007 The Petroleum Gap on AddThis.com... Fact #465: April 16, 2007 The Petroleum Gap (Revised April 18, 2007) Since 1989, the transportation sector alone has used more petroleum than

186

Wide-gap a-Si:H fabricated by controlling voids  

SciTech Connect (OSTI)

High quality wide gap hydrogenated amorphous silicon has been prepared using the chemical annealing technique. It was possible to prepare materials with band gaps ranging 1.8 to 2.1 eV by varying the preparation parameters. Low defect densities less than (3--8) {times} 10{sup 15} cm{sup {minus}3} could be maintained over the entire band gap range. Improved stability for light soaking was also observed in the wide gap materials.

Yoshino, K.; Futako, W.; Wasai, Y.; Shimizu, I. [Tokyo Inst. of Tech., Yokohama (Japan). Graduate School

1996-12-31T23:59:59.000Z

187

Electric strength of the accelerating gap of a plasma electron source at rough vacuum  

Science Journals Connector (OSTI)

Conditions for the electric breakdown of the accelerating gap of a plasma electron source are determined. It is shown that,...

V. A. Burdovitsin; M. N. Kuzemchenko; E. M. Oks

2002-07-01T23:59:59.000Z

188

OIKOS 101: 499504, 2003 Do seedlings in gaps interact? A field test of assumptions in ESS  

E-Print Network [OSTI]

OIKOS 101: 499­504, 2003 Do seedlings in gaps interact? A field test of assumptions in ESS seed seedlings in gaps interact? A field test of assumptions in ESS seed size models. ­ Oikos 101: 499­504. ESS for the occupancy of `safe sites' or vegetation gaps. If mortality rates are high and/or frequency-independent, ESS

Silvertown, Jonathan

189

The Quasi-Distributed Gap Technique for Planar Inductors-Design Guidelines  

E-Print Network [OSTI]

The Quasi-Distributed Gap Technique for Planar Inductors-Design Guidelines Jiankun Hu C. R The Quasi-Distributed Gap Technique for Planar Inductors: Design Guidelines Jiankun Hu Charles R. Sullivan of low-permeability magnetic material to form a uniformly distributed gap can facilitate the design

190

Penetration of plasma into the wafer-focus ring gap in capacitively coupled plasmas  

E-Print Network [OSTI]

Penetration of plasma into the wafer-focus ring gap in capacitively coupled plasmas Natalia Y of capacitively coupled plasma reactors with a wafer-focus ring gap. The penetration of plasma generated species i.e., ions and radicals into the wafer-focus ring gap is discussed. We found that the penetration of plasma

Kushner, Mark

191

THE DEVILS STAIRCASE DIMENSIONS AND MEASURE-THEORETICAL ENTROPY OF MAPS WITH HORIZONTAL GAP  

E-Print Network [OSTI]

Abstract. This work elucidates the measure-theoretical entropy and dimensions of a unimodal map with a horizontal gap. The measure-theoretical entropy and dimensions of the Ft (which is defined later)are shown to form a devils staircase structure with respect to the gap size t. Pesins formula for gap maps is also considered. 1.

Jung-chao Ban; Song-sun Lin

192

Field conditions : the stadium, the city, and the masses  

E-Print Network [OSTI]

The past 30 years has seen the emergence of two seemingly unrelated problems: The first problem is the underperformance and looming demolition of Boston City Hall and the unavoidable commercial development of its plaza. ...

Michael, Joseph R., Jr

2010-01-01T23:59:59.000Z

193

Tanzania's New National Stadium and the Rhetoric of Development  

E-Print Network [OSTI]

rapper Jay-Z ar- rived in Dar es Salaam on the first stop inI would not be in Dar es Salaam long enough to witness thisIn the same visit, the Dar es Salaam mayor also called on

Sortijas, Steve

2007-01-01T23:59:59.000Z

194

The 6/94 gap in health impact assessment  

SciTech Connect (OSTI)

Health impact assessment (HIA), a methodology that aims to facilitate the mitigation of negative and enhancement of positive health effects due to projects, programmes and policies, has been developed over the past 20-30 years. There is an underlying assumption that HIA has become a full fledged critical piece of the impact assessment process with a stature equal to both environmental and social impact assessments. This assumption needs to be supported by evidence however. Within the context of projects in developing country settings, HIA is simply a slogan without a clearly articulated and relevant methodology, offered by academia and having little or no salience in the decision-making process regarding impacts. This harsh assertion is supported by posing a simple question: 'Where in the world have HIAs been carried out?' To answer this question, we systematically searched the peer-reviewed literature and online HIA-specific databases. We identified 237 HIA-related publications, but only 6% of these publications had a focus on the developing world. What emerges is, therefore, a huge disparity, which we coin the 6/94 gap in HIA, even worse than the widely known 10/90 gap in health research (10% of health research funding is utilized for diseases causing 90% of the global burden of disease). Implications of this 6/94 gap in HIA are discussed with pointed emphasis on extractive industries (oil/gas and mining) and water resources development. We conclude that there is a pressing need to institutionalize HIA in the developing world, as a consequence of current predictions of major extractive industry and water resources development, with China's investments in these sectors across Africa being particularly salient.

Erlanger, Tobias E. [Department of Public Health and Epidemiology, Swiss Tropical Institute, CH-4002 Basel (Switzerland)], E-mail: tobias.erlanger@unibas.ch; Krieger, Gary R. [NewFields, LLC, Denver, CO 80202 (United States)], E-mail: gkrieger@newfields.com; Singer, Burton H. [Office of Population Research, Princeton University, Princeton, NJ 08544 (United States)], E-mail: singer@princeton.edu; Utzinger, Juerg [Department of Public Health and Epidemiology, Swiss Tropical Institute, CH-4002 Basel (Switzerland)], E-mail: juerg.utzinger@unibas.ch

2008-05-15T23:59:59.000Z

195

Rapidity gap signals in Higgs-boson production at the SSC  

Science Journals Connector (OSTI)

We examine the structure of the underlying event in neutral Higgs-boson production at the Superconducting Super Collider (SSC). Gaps, regions of rapidity containing no soft particle production, can provide a clean signature for W boson fusion to the heavy Higgs boson. We first examine the physical basis of gap production and estimate the survival probability of gaps in the minijet model. Then, using pythia, and herwig, we compare gap events to W pair production from top quark decay and qq fusion. We find that, if experimental problems can be overcome, gaps should provide a small, but clean, signal for heavy Higgs-boson production at the SSC.

R. S. Fletcher and T. Stelzer

1993-12-01T23:59:59.000Z

196

Lattice Boltzmann model for photonic band gap materials  

Science Journals Connector (OSTI)

An efficient technique for computing photonic band structure and defect modes is proposed based on the lattice Boltzmann model. Physically, it is a scheme based on the kinetics of the virtual microscopic process, rather than a solution of the macroscopic Maxwell equations. The method has significant advantages of being naturally suited for massively parallel machine, as well as speed and convenience, providing another methodology for photonic band gap materials and, also, for general electromagnetic scattering problems in open region when incorporated with the perfectly matched layer technique.

Zhifang Lin; Haiping Fang; Jianjun Xu; Jian Zi; Xiangdong Zhang

2003-02-07T23:59:59.000Z

197

Gap-dependent transitions of atmospheric microplasma in open air  

SciTech Connect (OSTI)

We report on the gap dependence of the planar atmospheric microplasma in air. We investigate the transitions of the dielectric barrier discharge in open air, including the random walk filaments (plasma columns), localized filaments, stochastic filaments, and diffuse discharge. A star-shaped filamentary discharge pattern is observed after the formation of the localized filaments. The liquid drops found on the dielectric surface further become a confining pattern for star-shaped discharge. We also demonstrate the applications of the insulating pattern for the use of the plasma display in open air by the handwritten characters with UV adhesive.

Chu, Hong-Yu; Huang, Bo-Shiun [Department of Physics, National Chung Cheng University, ChiaYi 62102, Taiwan (China)

2011-04-15T23:59:59.000Z

198

Random-Gap Model for Graphene and Graphene Bilayers  

Science Journals Connector (OSTI)

The effect of a randomly fluctuating gap, created by a random staggered potential, is studied in a monolayer and a bilayer of graphene. The density of states, the one-particle scattering rate, and the transport properties (diffusion coefficient and conductivity) are calculated at the neutrality point. All of these quantities vanish at a critical value of the average staggered potential, signaling a continuous transition to an insulating behavior. Transport quantities are directly linked to the one-particle scattering rate. Although the behavior is qualitatively the same in mono- and bilayers, the effect of disorder is much stronger in the latter.

K. Ziegler

2009-03-24T23:59:59.000Z

199

Direct control of air gap flux in permanent magnet machines  

DOE Patents [OSTI]

A method and apparatus for field weakening in PM machines uses field weakening coils (35, 44, 45, 71, 72) to produce flux in one or more stators (34, 49, 63, 64), including a flux which counters flux normally produced in air gaps between the stator(s) (34, 49, 63, 64) and the rotor (20, 21, 41, 61) which carries the PM poles. Several modes of operation are introduced depending on the magnitude and polarity of current in the field weakening coils (35, 44, 45, 71, 72). The invention is particularly useful for, but not limited to, the electric vehicle drives and PM generators.

Hsu, John S. (Oak Ridge, TN)

2000-01-01T23:59:59.000Z

200

Origin of the optical gap in half-doped manganites  

Science Journals Connector (OSTI)

We have analyzed the coexisting charge and orbital ordering in half-doped manganites using a model which includes Coulomb and Jahn-Teller orbital polarization interactions. Most surprisingly, the gap in the optical conductivity is reduced by both on-site and intersite Coulomb interactions, but increases and explains the experimental results when the Jahn-Teller terms with orbital polarization are considered. The origin of this behavior is explained within a molecular model which arises in the limit of extreme topological frustration, when single electrons are confined to molecular units consisting of three orbitals.

Mario Cuoco; Canio Noce; Andrzej M. Ole?

2002-09-25T23:59:59.000Z

Note: This page contains sample records for the topic "gap amor stadium" 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

Fermi velocity renormalization and dynamical gap generation in graphene  

E-Print Network [OSTI]

We study the renormalization of the Fermi velocity by the long-range Coulomb interactions between the charge carriers in the Dirac-cone approximation for the effective low-energy description of the electronic excitations in graphene at half filling. Solving the coupled system of Dyson-Schwinger equations for the dressing functions in the corresponding fermion propagator with various approximations for the particle-hole polarization we observe that Fermi velocity renormalization effects generally lead to a considerable increase of the critical coupling for dynamical gap generation and charge-density wave formation at the semimetal-insulator transition.

C. Popovici; C. S. Fischer; L. von Smekal

2015-01-12T23:59:59.000Z

202

Low-pressure spark gap triggered by an ion diode  

DOE Patents [OSTI]

Spark gap apparatus for use as an electric switch operating at high voltage, high current and high repetition rate. Mounted inside a housing are an anode, cathode and ion plate. An ionizable fluid is pumped through the chamber of the housing. A pulse of current to the ion plate causes ions to be emitted by the ion plate, which ions move into and ionize the fluid. Electric current supplied to the anode discharges through the ionized fluid and flows to the cathode. Current stops flowing when the current source has been drained. The ionized fluid recombines into its initial dielectric ionizable state. The switch is now open and ready for another cycle.

Prono, D.S.

1982-08-31T23:59:59.000Z

203

Nonlinear Photon-Assisted Tunneling Transport in Optical Gap Antennas  

Science Journals Connector (OSTI)

(16, 17) For instance, incoming photons can exchange energy with tunneling charges modifying thus the conductance of the barrier(18, 19) and strong-field effects were recently reported. ... (32) The height ? of the potential barriers can be directly deduced from these two minima. ... Two lock-in amplifiers referenced at Fmod and 2Fmod output a signal proportional to the differential conductance I? = Vac(?Ib/?Vb) of the gap antenna and signal proportional to the nonlinearity of the conductance I? = 1/4Vac2(?2Ib/?Vb2), respectively. ...

Arnaud Stolz; Johann Berthelot; Marie-Maxime Mennemanteuil; Grard Colas des Francs; Laurent Markey; Vincent Meunier; Alexandre Bouhelier

2014-04-03T23:59:59.000Z

204

Technical Standards, MACCS2, Gap Analysis - May 3, 2004 | Department of  

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

MACCS2, Gap Analysis - May 3, 2004 MACCS2, Gap Analysis - May 3, 2004 Technical Standards, MACCS2, Gap Analysis - May 3, 2004 May 3, 2004 Software Quality Assurance Improvement Plan: MACCS2 Gap Analysis The MACCS2 software, for radiological dispersion and consequence analysis, is one of the codes designated for the toolbox. To determine the actions needed to bring the MACCS2 code into compliance with the SQA qualification criteria, and develop an estimate of the resources required to perform the upgrade, the Implementation Plan has committed to sponsoring a code-specific gap analysis document. Technical Standards, MACCS2, Gap Analysis More Documents & Publications Technical Standards, Guidance on MACCS2 Computer Code - June 30, 2004 Technical Standards, MELCOR - Gap Analysis - May 3, 2004

205

Bridge the Gap 2014 --Guidance for Participants Requiring Level Access This level-access route is meant to accommodate Bridge the Gap participants using  

E-Print Network [OSTI]

or there is an alternative route in to the College theough the Golden Gate. There will be a steward on hand to assist. 12Bridge the Gap 2014 -- Guidance for Participants Requiring Level Access This level-access route is meant to accommodate Bridge the Gap participants using wheelchairs, mobility scooters and pushchairs

Travis, Adrian

206

Method of Controlling Corona Effects and Breakdown Voltage of Small Air Gaps Stressed by Impulse Voltages  

E-Print Network [OSTI]

This paper investigates the influence of a resistor on the dielectric behavior of an air gap. The resistor is connected in series with the air gap and the latter is stressed by impulse voltage. Air gap arrangements of different geometry with either the rod or the plate grounded are stressed with impulse voltages of both positive and negative polarity. The resistor is connected in series with the air gap in the return circuit connecting the gap with the impulse generator. The method followed involves the investigation of the graphs of the charging time concerning the air gaps capacitances, in connection to the value of the resistor, the geometry of the gap, the effect of grounding and the polarity effect. It is determined that the charging time of the air gap increases, as the value of the resistor increases. It is also determined that the peak voltage value of the fully charged air gap decreases as the value of the resistor increases. The results of the mathematical and simulation analysis are compared with the results of the oscillograms taken from experimental work. In addition and consequently to the above results it is concluded from the experimental work that the in series connection of the resistor in the circuit has significant influence on corona pulses (partial discharges) occurring in the gap and on the breakdown voltage of the gap. A new method of controlling the corona effects and consequently the breakdown voltage of small air gaps stressed by impulse voltage of short duration in connection to the ground effect and the polarity effect has arisen. Furthermore through mathematical analysis of the charging graphs obtained from simulation and experimental oscillograms there was a calculation of the values of the capacitance of the air gaps in relation to their geometry and the results were compared to the values calculated with mathematical analysis.

Athanasios Maglaras; Trifon Kousiouris; Frangiskos Topalis; Dimitrios Katsaros; Leandros A. Maglaras; Konstantina Giannakopoulou

2014-10-15T23:59:59.000Z

207

Interferometric Detection of Planets/Gaps in Protoplanetary Disks  

E-Print Network [OSTI]

We investigate the possibility to find evidence for planets in circumstellar disks by infrared and submillimeter interferometry. Hydrodynamical simulations of a circumstellar disk around a solar-type star with an embedded planet of 1 Jupiter mass are presented. On the basis of 3D radiative transfer simulations, images of this system are calculated. These intensity maps provide the basis for the simulation of the interferometers VLTI (equipped with the mid-infrared instrument MIDI) and ALMA. While ALMA will provide the necessary basis for a direct gap and therefore indirect planet detection, MIDI/VLTI will provide the possibility to distinguish between disks with or without accretion on the central star on the basis of visibility measurements.

S. Wolf; F. Gueth; Th. Henning; W. Kley

2002-08-26T23:59:59.000Z

208

Bridging the Efficiency Gap: Commercial Packaged Rooftop Air Conditioners  

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

Bridging Bridging the Efficiency Gap: Commercial Packaged Rooftop Air Conditioners John Shugars, Consultant Philip Coleman, Lawrence BerkeleyNational Laboratory ChristopherPayne, Lawrence Berkeley National Laboratory Laura Van Wie McGrory, Lawrence Berkeley National Laboratory ABSTRACT The energy efficiency ofmany products has increased markedly over the past decade. A conspicuous exception to this trend is commercial packaged rooftop air conditioners, which have experiencedlittle to no efficiency improvement since 1992 when the Energy Policy Act of 1992 imposed federal minimum standards. Packaged rooftop units have been estimated to use on the order of76 billion kWh annually in the US, at a cost ofroughly $5.6 billion. Sales of these units are growing, and the majority of units sold have energy efficiency ratios (EERs) at orjust above the current national minimum efficiency

209

Review of Used Nuclear Fuel Storage and Transportation Technical Gap  

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

Analyses Analyses Review of Used Nuclear Fuel Storage and Transportation Technical Gap Analyses The U.S. Department of Energy Office of Nuclear Energy (DOE-NE), Office of Fuel Cycle Technology, has established the Used Fuel Disposition Campaign (UFDC) to conduct the research and development activities related to storage, transportation, and disposal of used nuclear fuel and high-level radioactive waste. The mission of the UFDC is to identify alternatives and conduct scientific research and technology development to enable storage, transportation, and disposal of used nuclear fuel (UNF) and wastes generated by existing and future nuclear fuel cycles. The Storage and Transportation activities within the UFDC are being developed to address issues regarding the extended storage of UNF and its subsequent

210

Temperature dependence of the gaps of high-temperature superconductors in the Fermi-arc region  

Science Journals Connector (OSTI)

It is shown how in a high-temperature superconductor, the length of the Fermi arc can be obtained from the doping dependence of the pseudogap and the superconducting gap. In the momentum region spanned by the Fermi arc, the pseudogap temperature dependence follows that of the superconducting gap. The close interconnection of the two gaps suggests that they are both an essential part of the high-temperature superconductivity.

S. Hfner and F. Mller

2008-07-23T23:59:59.000Z

211

A Survey of Gaps, Obstacles, and Technical Challenges for Hypersonic Applications.  

E-Print Network [OSTI]

?? The object of this study is to canvas the literature for the purpose of identifying and compiling a list of Gaps, Obstacles, and Technological (more)

Barber, Timothy Andrew

2012-01-01T23:59:59.000Z

212

When is a Gap Function Good for Error Bounds? 1 Introduction and ...  

E-Print Network [OSTI]

the gap function and its Fukushima type regularization for GVI and WGVI. ...... straight forward way and in fact in a more simpler fashion than that of [18] whose

2012-07-11T23:59:59.000Z

213

A database for the study of marine mammal behavior: Gap analysis, data standardization, and future directions  

E-Print Network [OSTI]

Gap Analysis, Data Standardization, and Future Directionsdata, and 3) lack of standardization in data re- porting. Awas the lack of standardization and/or presentation of

Shaffer, S A; Costa, Daniel P

2006-01-01T23:59:59.000Z

214

E-Print Network 3.0 - artificial canopy gaps Sample Search Results  

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

canopy gap (which may... -scope assesses the relative size of the largest ... Source: Forest Research Agency of the UK Forestry Commission Collection: Renewable Energy 26...

215

Fact #850: December 8, 2014 Automatic Transmissions have closed the Fuel Economy Gap with Manual Transmissions  

Broader source: Energy.gov [DOE]

Historically, manual transmissions have delivered better fuel economy than automatic transmissions. However, improvements in the efficiency of automatic transmissions have closed that gap in recent...

216

Three-photon-absorption spectroscopy in an indirect-gap material: CdI2  

Science Journals Connector (OSTI)

The three-photon absorption (3PA) spectrum of an indirect-gap material (CdI2) has been measured at 10 K by monitoring the resulting self-trapped-exciton emission. The contribution of excitonic transitions has been evidenced for excitation energies near the indirect gap, while the contribution of allowed and forbidden indirect transitions has been shown for excitation energies far from the gap. The spectral behavior of the 3PA coefficient has been described by parametric formulas, which are analogous to the ones successfully applied for 3PA in direct-gap materials.

M. Lepore; R. Tommasi; I. M. Catalano

1993-03-15T23:59:59.000Z

217

Genetic-Algorithm Discovery of a Direct-Gap and Optically Allowed Superstructure from Indirect-Gap Si and Ge Semiconductors  

SciTech Connect (OSTI)

Combining two indirect-gap materials - with different electronic and optical gaps - to create a direct gap material represents an ongoing theoretical challenge with potentially rewarding practical implications, such as optoelectronics integration on a single wafer. We provide an unexpected solution to this classic problem, by spatially melding two indirect-gap materials (Si and Ge) into one strongly dipole-allowed direct-gap material. We leverage a combination of genetic algorithms with a pseudopotential Hamiltonian to search through the astronomic number of variants of Si{sub n}/Ge{sub m}/.../Si{sub p}/Ge{sub q} superstructures grown on (001) Si{sub 1-x}Ge{sub x}. The search reveals a robust configurational motif - SiGe{sub 2}Si{sub 2}Ge{sub 2}SiGe{sub n} on (001) Si{sub x}Ge{sub 1-x} substrate (x {le} 0.4) presenting a direct and dipole-allowed gap resulting from an enhanced {Gamma}-X coupling at the band edges.

d'Avezac, M.; Luo, J. W.; Chanier, T.; Zunger, A.

2012-01-13T23:59:59.000Z

218

NETL: News Release - Data Acquisition Processor Fills Gap for Extreme  

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

9, 2010 9, 2010 Data Acquisition Processor Fills Gap for Extreme Down-hole Conditions Honeywell Develops Unique Reprogrammable High Temperature Device Morgantown, WV - Honeywell International, Inc. has developed a Reconfigurable Processor for Data Acquisition (RPDA) - a reprogrammable, multi-functional device that can operate at temperatures up to 250oC (482oF). The system is housed in a rugged package suitable for deep down-hole oil and natural gas logging and measurement-while-drilling (MWD) operations, and permanent wellbore installation applications. The project was funded through a cooperative agreement with the National Energy Technology Laboratory (NETL) under the Office of Fossil Energy's Oil and Natural Gas Program. Deep wells are generally defined as having a true vertical depth (TVD) greater than 15,000 feet, while ultra-deep wells are deeper than 25,000 feet TVD. Potential recoverable natural gas and oil resources from deep formations are significant, and deep wells tend to produce at much higher daily rates than conventional shallower wells.

219

Analyzing the Performance of a Multiobjective GA-P Algorithm for Learning Fuzzy Queries in  

E-Print Network [OSTI]

Analyzing the Performance of a Multiobjective GA-P Algorithm for Learning Fuzzy Queries in a Machine Learning Environment Oscar Cord´on1 , Enrique Herrera-Viedma1 , Mar´ia Luque1 , F´elix de Moya2- tionary algorithms (EAs) [1], such as genetic algorithm-programming (GA-P) [11] or simulated annealing

Fernandez, Thomas

220

InAlAs EPITAXIAL GROWTH FOR WIDE BAND GAP SOLAR CELLS Marina S. Leite  

E-Print Network [OSTI]

InAlAs EPITAXIAL GROWTH FOR WIDE BAND GAP SOLAR CELLS Marina S. Leite 1 , Robyn L. Woo 2 , William vapor phase epitaxy and wide band gap solar cell fabrication. X-ray diffraction and transmissionAlAs solar cells lattice-matched to InP were grown and electrically characterized under AM 1.5 global 1-sun

Atwater, Harry

Note: This page contains sample records for the topic "gap amor stadium" 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

Light trapping design for low band-gap polymer solar cells  

E-Print Network [OSTI]

Light trapping design for low band-gap polymer solar cells Stephen Foster1,* and Sajeev John1,2 1 demonstrate numerically a 2-D nanostructured design for light trapping in a low band-gap polymer solar cell, "Light harvesting improvement of organic solar cells with self- enhanced active layer designs," Opt

John, Sajeev

222

Energy Band-Gap Engineering of Graphene Nanoribbons Melinda Y. Han,1  

E-Print Network [OSTI]

, New York, New York 10027, USA 2 Department of Physics, Columbia University, New York, New York 10027Energy Band-Gap Engineering of Graphene Nanoribbons Melinda Y. Han,1 Barbaros O¨ zyilmaz,2 Yuanbo an energy gap near the charge neutrality point. Individual graphene layers are contacted with metal

Kim, Philip

223

Collapse of integer Hall gaps in a double-quantum-well system  

Science Journals Connector (OSTI)

For coupled double-quantum-well systems in which tunneling is important, the symmetric to antisymmetric energy gap leads to a quantum Hall effect. In this Letter we show that interaction effects in strong magnetic fields can destroy this gap, and present a theory which predicts the occurrence or nonoccurrence of a quantum Hall effect.

A. H. MacDonald; P. M. Platzman; G. S. Boebinger

1990-08-06T23:59:59.000Z

224

MODELING PLANT COMPETITION WITH THE GAPS OBJECT-ORIENTED DYNAMIC SIMULATION MODEL  

E-Print Network [OSTI]

MODELING PLANT COMPETITION WITH THE GAPS OBJECT-ORIENTED DYNAMIC SIMULATION MODEL David G. Rossiter of Agronomy, Inc. #12;MODELING PLANT COMPETITION WITH THE GAPS OBJECT-ORIENTED DYNAMIC SIMULATION MODEL Abstract Modeling inter-species competition is a natural application for dynamic simulation models

Rossiter, D G "David"

225

Bridging the Gap-The Outcome of the Climate Conference in Copehagen and its  

Open Energy Info (EERE)

Bridging the Gap-The Outcome of the Climate Conference in Copehagen and its Bridging the Gap-The Outcome of the Climate Conference in Copehagen and its Implications for the Land Transport Sector Jump to: navigation, search Tool Summary Name: Bridging the Gap-The Outcome of the Climate Conference in Copehagen and its Implications for the Land Transport Sector Agency/Company /Organization: Bridging the Gap Sector: Energy, Land Focus Area: Transportation Topics: Policies/deployment programs Resource Type: Publications Website: www.transport2012.org/bridging/ressources/documents/1/556,Copenhagen_r References: Bridging the Gap-The Outcome of the Climate Conference in Copehagen and its Implications for the Land Transport Sector[1] "This paper provides a brief overview of the outcome of the UN conference and a discussion of the implications of decisions made there in respect to

226

A New Gap-Opening Mechanism in a Triple-Band Metal  

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

A New Gap-Opening Mechanism in a A New Gap-Opening Mechanism in a Triple-Band Metal A New Gap-Opening Mechanism in a Triple-Band Metal Print Wednesday, 23 February 2005 00:00 A "wire" of indium only one or a few atoms wide grown on a silicon surface comprises an ideal test laboratory for studying one-dimensional (1D) metals. A new example comes from a collaboration between researchers from Yonsei University in Korea, the ALS, and the University of Oregon, who have discovered that the phase transition from metal to insulator that occurs at low temperature in indium wires on the silicon (111) surface involves not only the expected shift in the electronic structure (band-gap opening) but also a band restructuring that gives rise to an energy gap in a second band. Three's a Crowd

227

Vacuum gaps with small tunnel currents at large electric field and its  

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

Vacuum gaps with small tunnel currents at large electric field and its Vacuum gaps with small tunnel currents at large electric field and its potential applications for energy storage, charge storage and power supplies. Friday, May 27, 2011 - 4:00pm SSRL Conference Room 137-226 Alfred Hubler, Department of Physics, University of Illinois, Urbana-Champaign We study tunnel currents and electric break down in vacuum gaps experimentally and theoretically. We find that electric field at break down in nano vacuum gaps is 3 order of magnitude larger than in macroscopic capacitors. Pointed electrodes increase the limiting field even further. Eigen states in the gap can help to reduce tunnel currents. We discuss applications of this technology for energy storage, charge storage, and power supplies. Speaker Bio: Professor Alfred Hubler is the director of the Center for

228

Technical Standards, ALOHA-Gap Analysis - May 3, 2004 | Department of  

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

ALOHA-Gap Analysis - May 3, 2004 ALOHA-Gap Analysis - May 3, 2004 Technical Standards, ALOHA-Gap Analysis - May 3, 2004 May 3, 2004 DOE-EH-4.2.1.3-ALOHA-Gap Analysis, Software Quality Assurance Improvement Plan: ALOHA Gap Analysis The Defense Nuclear Facilities Safety Board (DNFSB) issued Recommendation 2002-1 on Quality Assurance for Safety-Related Software in September 2002 (DNFSB 2002). The Recommendation identified a number of quality assurance issues for software used in the Department of Energy (DOE) facilities for analyzing hazards, and designing and operating controls that prevent or mitigate potential accidents. The development and maintenance of a collection, or "toolbox," of high-use, Software Quality Assurance (SQA)-compliant safety analysis codes is one of the major improvement

229

Thermal-hydraulic and structural considerations on the gap variation between fuel bundle and hexcan  

SciTech Connect (OSTI)

One of the safety concerns in reactor operation is the temperature of the fuel elements, which are contained in a hexagonal duct, referred to as the hexcan. There are gaps between the fuel bundle and the hexcan, and the gaps somewhat affect thermal-hydraulic behavior of the fuel element. This paper investigates the impact of gap variations on the thermal-hydraulic responses of the fuel element as well as the possibility of fuel bundle and hexcan interaction. The gap variation between hex duct and fuel bundle is caused by differential thermal expansion, creep strain, and irradiation-induced swelling of fuel-cladding and hex duct, and it is a function of fuel burnup. The effects of gap variations on the thermal-hydraulic responses of typical driver subassemblies in the Experimental Breeder Reactor (EBR-II) are investigated. A structural analysis was performed to predict the in-reactor deformation behavior of fuel bundle and hex duct, and followed by a thermal-hydraulic analysis to determine the flow and temperature response due to gap changes. The effects of geometry variation on the thermal-hydraulic response are discussed. The study indicates that the effect of gap variation should not be ignored for subassembly designs.

Chang, L.K.; Lee, M.J.; Ku, J.Y.

1992-05-01T23:59:59.000Z

230

Thermal-hydraulic and structural considerations on the gap variation between fuel bundle and hexcan  

SciTech Connect (OSTI)

One of the safety concerns in reactor operation is the temperature of the fuel elements, which are contained in a hexagonal duct, referred to as the hexcan. There are gaps between the fuel bundle and the hexcan, and the gaps somewhat affect thermal-hydraulic behavior of the fuel element. This paper investigates the impact of gap variations on the thermal-hydraulic responses of the fuel element as well as the possibility of fuel bundle and hexcan interaction. The gap variation between hex duct and fuel bundle is caused by differential thermal expansion, creep strain, and irradiation-induced swelling of fuel-cladding and hex duct, and it is a function of fuel burnup. The effects of gap variations on the thermal-hydraulic responses of typical driver subassemblies in the Experimental Breeder Reactor (EBR-II) are investigated. A structural analysis was performed to predict the in-reactor deformation behavior of fuel bundle and hex duct, and followed by a thermal-hydraulic analysis to determine the flow and temperature response due to gap changes. The effects of geometry variation on the thermal-hydraulic response are discussed. The study indicates that the effect of gap variation should not be ignored for subassembly designs.

Chang, L.K.; Lee, M.J.; Ku, J.Y.

1992-01-01T23:59:59.000Z

231

AC loss characteristics of superconducting power transmission cables: gap effect and  

Science Journals Connector (OSTI)

Four groups of superconducting power transmission cables composed of coated conductors with 4.0mm width and 2m superconductor thickness have been designed, including mono-layer, two-layer, four-layer and six-layer cables. In each group, three types of cables have been constructed with gaps of different size between adjacent coated conductors, which are classified into small gap, medium gap and large gap. Moreover, different lateral critical current density (Jc) distributions, specifically a uniform distribution and a trapezoidal distribution with a sloping shoulder, have been assumed while calculating the AC losses of these cables numerically by using a one-dimensional FEM model. Numerical results show that AC losses in mono-layer cables are significantly influenced by gaps between coated conductors as well as lateral Jc distribution, while cables with many layers are hardly affected by them. This proves that small gaps between coated conductors are not absolutely essential to reduce AC losses in multi-layer cables, and a sloping shoulder of the Jc distribution is more allowable in multi-layer cables than in mono-layer cables. The AC loss distributions among layers in six-layer cables are presented and the reasons for different influences of the gap as well as the lateral Jc distribution in mono-layer and multi-layer cables are discussed.

Quan Li; Naoyuki Amemiya; Katsutoku Takeuchi; Taketsune Nakamura; Noboru Fujiwara

2010-01-01T23:59:59.000Z

232

AMOR Towards Adaptable Model Versioning Kerstin Altmanninger1  

E-Print Network [OSTI]

, Werner Retschitzegger1 , Wieland Schwinger1 , Martina Seidl2 , Manuel Wimmer2 1 Johannes Kepler University Linz, Austria {kerstin.altmanninger | angelika.kusel | werner.retschitzegger | wieland

Hochreiter, Sepp

233

Thin plate gap bridging study for Nd:YAG pulsed laser lap welds.  

SciTech Connect (OSTI)

In an on going study of gap bridging for thin plate Nd:YAG laser lap welds, empirical data, high speed imaging, and computer modeling were utilized to better understand surface physics attributed to the formation and solidification of a weld pool. Experimental data indicates better gap bridging can be achieved through optimized laser parameters such as pulse length, duration, and energy. Long pulse durations at low energies generating low peak powers were found to create the highest percent of gap bridging ability. At constant peak power, gap-bridging ability was further improved by using a smaller spot diameter resulting in higher irradiances. Hence, welding in focus is preferable for bridging gaps. Gas shielding was also found to greatly impact gap-bridging ability. Gapped lap welds that could not be bridged with UHP Argon gas shielding, were easily bridged when left unshielded and exposed to only air. Incident weld angle and joint offset were also investigated for their ability to improve gap bridging. Optical filters and brightlight surface illumination enabled high-speed imaging to capture the fluid dynamics of a forming and solidifying weld pool. The effects of various laser parameters and the weld pool's interaction with the laser beam could also be observed utilizing the high-speed imaging. The work described is used to develop and validate a computer model with improved weld pool physics. Finite element models have been used to derive insight into the physics of gap bridging. The dynamics of the fluid motion within the weld pool in conjunction with the free surface physics have been the primary focus of the modeling efforts. Surface tension has been found to be a more significant factor in determining final weld pool shape than expected.

Roach, Robert Allen; Fuerschbach, Phillip William; Bernal, John E.; Norris, Jerome T.

2006-01-01T23:59:59.000Z

234

Gap formation, microsite variation and the conifer seedling occurrence in a subalpine old-growth forest, central Japan  

Science Journals Connector (OSTI)

To evaluate the effects of canopy gaps and forest floor microsites (soil, fallen logs, root ... buttresses and stumps) on regeneration of subalpine forests, the gap regeneration and seedling occurrence of conifers

Yoshiko Narukawa; Shin-Ichi Yamamoto

2001-12-01T23:59:59.000Z

235

Defect assistant band alignment transition from staggered to broken gap in mixed As/Sb tunnel field effect transistor heterostructure  

E-Print Network [OSTI]

.3As heterointerface. As a result, the band alignment was converted from staggered gap to broken gap-to-source voltage, VGS. As the SS of a MOSFET is governed by the transport mechanism of thermionic-emission over

Yener, Aylin

236

Measurements of CsI band-gap closure to 93 GPa  

Science Journals Connector (OSTI)

Infrared-absorption measurements to a peak pressure of 93 GPa document the pressure-induced closure of the band gap of CsI to about 4450 cm-1 (0.55 eV). In accord with previous spectroscopic measurements to 60 GPa, our data show that the band gap of CsI decreases continuously with pressure, and metallization (complete closure of the gap) is expected to occur above 100 GPa. A recent claim that CsI becomes metallic at 655 GPa is therefore spurious.

Quentin Williams and Raymond Jeanloz

1986-01-13T23:59:59.000Z

237

On the entropy devil's staircase in a family of gap-tent maps  

E-Print Network [OSTI]

We analyze dynamical properties of a "gap-tent map" - a family of 1D maps with a symmetric gap, which mimics the presence of noise in physical realizations of chaotic systems. We demonstrate that the dependence of the topological entropy on the size of the gap has a structure of the devil's staircase. By integrating over a fractal measure, we obtain analytical, piece-wise differentiable approximations of this dependence. Applying concepts of the kneading theory we find the position and the values of the entropy for all leading entropy plateaus. Similar properties hold also for the dependence of the fractal dimension of the invariant set and the escape rate.

Karol Zyczkowski; Erik M. Bollt

1998-07-07T23:59:59.000Z

238

Theorem on the existence of a nonzero energy gap in adiabatic quantum computation  

E-Print Network [OSTI]

Adiabatic quantum computation, based on the adiabatic theorem, is a promising alternative to conventional quantum computation. The validity of an adiabatic algorithm depends on the existence of a nonzero energy gap between the ground and excited states. However, it is difficult to ascertain the exact value of the energy gap. In this paper, we put forward a theorem on the existence of nonzero energy gap for the Hamiltonians used in adiabatic quantum computation. It can help to effectively identify a large class of the Hamiltonians without energy-level crossing between the ground and excited states.

Da-Jian Zhang; Xiao-Dong Yu; D. M. Tong

2014-10-14T23:59:59.000Z

239

Fact #837: September 8, 2014 Gap between Net Imports and Total Imports of Petroleum is Widening Dataset  

Broader source: Energy.gov [DOE]

Excel file with dataset for Fact #837: Gap between Net Imports and Total Imports of Petroleum is Widening

240

The microscopic pairing gap in a slab of nuclear matter for the Argonne v18 NN-potential  

Science Journals Connector (OSTI)

Ab initio gap equation for 1S0 pairing in a nuclear slab is solved for the Argonne v18 NN-potential. The gap function is compared in detail with the one found previously for the separable form of the Paris potential. The difference between the two gaps turned out to be about 10%. Dependence of the gap on the chemical potential ? is analyzed.

S.S. Pankratov; M. Baldo; U. Lombardo; E.E. Saperstein; M.V. Zverev

2008-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "gap amor stadium" 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

The microscopic pairing gap in a slab of nuclear matter for the Argonne v18 NN-potential  

E-Print Network [OSTI]

Ab initio gap equation for ^1S_0 pairing in a nuclear slab is solved for the Argonne v18 NN-potential. The gap function is compared in detail with the one found previously for the separable form of the Paris potential. The difference between the two gaps turned out to be about 10%. Dependence of the gap on the chemical potential mu is analyzed.

S. S. Pankratov; M. Baldo; U. Lombardo; E. E. Saperstein; M. V. Zverev; ;

2008-01-12T23:59:59.000Z

242

Granby Pumping Plant Switchyard - Windy Gap Substation Transmission Line Rebuild, Grand County, Colorado: Final Environmental Impact Statement Appendices  

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

PUMPING PLANT SWITCHYARD - WINDY GAP PUMPING PLANT SWITCHYARD - WINDY GAP SUBSTATION TRANSMISSION LINE REBUILD, GRAND COUNTY, COLORADO DOE/EIS-0400 Final Environmental Impact Statement Appendices Grand County, Colorado June 2013 Appendix A EIS Scoping Report GRANBY PUMPING PLANT - WINDY GAP TRANSMISSION LINE REBUILD PROJECT ENVIRONMENTAL IMPACT STATEMENT SCOPING SUMMARY REPORT December 4, 2007

243

Patents and Clean Energy: Bridging the Gap Between Evidence and Policy |  

Open Energy Info (EERE)

Patents and Clean Energy: Bridging the Gap Between Evidence and Policy Patents and Clean Energy: Bridging the Gap Between Evidence and Policy Jump to: navigation, search Name Patents and Clean Energy: Bridging the Gap Between Evidence and Policy Agency/Company /Organization United Nations Environment Programme Sector Energy Focus Area Renewable Energy Topics Market analysis, Policies/deployment programs Resource Type Publications Website http://www.unep.org/greenecono References Patents and Clean Energy: Bridging the Gap Between Evidence and Policy[1] Overview "Technology development and its rapid diffusion are considered crucial for tackling the climate change challenge. In particular, enhancing technology transfer towards developing countries has been an integral part of the global climate change regime since the inception of the United Nations

244

Event:GGKP-Green Growth: Addressing the Knowledge Gaps Day 1 | Open Energy  

Open Energy Info (EERE)

GGKP-Green Growth: Addressing the Knowledge Gaps: on 2012/01/12 GGKP-Green Growth: Addressing the Knowledge Gaps: on 2012/01/12 The Green Growth Knowledge Platform (GGKP) will hold its inaugural conference, "Green Growth: Addressing the Knowledge Gaps," January 12-13, 2012, in Mexico City Mexico. The conference aims to take stock of the current understanding of the economics of green growth; engage researchers and practitioners in an ongoing dialogue to increase understanding of how green growth approaches can be applied in the field; identify knowledge gaps and establish priorities for knowledge-building work and implementation; and launch follow-on efforts. The conference location will allow attendees to benefit from Mexico's experiences from taking a leading role internationally in advocating pathways to green development.

245

Integration of MEA Components-Status and Technology Gaps: A Stakeholders Perspective  

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

DOE Fuel Cell Pre-Solicitation Workshop DOE Fuel Cell Pre-Solicitation Workshop March 16-17, 2010 Denver, CO 3M Fuel Cell Components Program Mark Debe, Steve Hamrock, Radoslav Atanasoski, Pinar Serim, Eric Funkenbusch, Mike Yandrasits, Stan Garnsworthy and Customers Integration of MEA Components - Status and Technology Gaps - A Stakeholder's Perspective 2 Outline: 1. What does MEA integration mean? 2. Where the technology may be going with regard to 2015 3. Status and relative gaps for 2015 at the individual component level 4. Status and relative gaps for 2015 at the MEA integration level 5. Suggestions where DOE should concentrate its efforts in the near future 6. Other general suggestions and recommendations Integration of MEA Components 3M perspectives on technology development needs and gaps. 3M U.S. DOE Fuel Cell Pre-Solicitation Workshop Denver, CO, March 16-17, 2010

246

Fact #837: September 8, Gap between Net Imports and Total Imports of Petroleum is Widening  

Broader source: Energy.gov [DOE]

Net imports of petroleum (total imports minus exports) were 6.2 million barrels per day in 2013 the lowest since the 1980's (dark blue line). The widening gap between total imports (light blue...

247

Artificial Neural Network Models for the Gap Discontinuities in Stripline Circuits  

Science Journals Connector (OSTI)

Gap discontinuities appear in many stripline circuits, such as the multilayer microwave monolithic ICs and the interconnect systems in high-speed digital circuits. In this paper, a multilayer perceptron neural...

Bing-Zhong Wang; Jingsong Hong

2000-05-01T23:59:59.000Z

248

Molten Carbonate and Phosphoric Acid Stationary Fuel Cells: Overview and Gap Analysis  

Broader source: Energy.gov [DOE]

This report describes the technical and cost gap analysis performed to identify pathways for reducing the costs of molten carbonate fuel cell (MCFC) and phosphoric acid fuel cell (PAFC) stationary fuel cell power plants.

249

Band gap and electronic structure of MgSiN{sub 2}  

SciTech Connect (OSTI)

Density functional theory calculations and electron energy loss spectroscopy indicate that the electronic structure of ordered orthorhombic MgSiN{sub 2} is similar to that of wurtzite AlN. A band gap of 5.7?eV was calculated for both MgSiN{sub 2} (indirect) and AlN (direct) using the Heyd-Scuseria-Ernzerhof approximation. Correction with respect to the experimental room-temperature band gap of AlN indicates that the true band gap of MgSiN{sub 2} is 6.2?eV. MgSiN{sub 2} has an additional direct gap of 6.3?eV at the ? point.

Quirk, J. B., E-mail: james.quirk09@imperial.ac.uk; Rsander, M.; McGilvery, C. M.; Moram, M. A. [Department of Materials, Imperial College London, Exhibition Road, London SW7 2AZ (United Kingdom); Palgrave, R. [Department of Chemistry, University College London, Gordon Street WC1H 0AJ (United Kingdom)

2014-09-15T23:59:59.000Z

250

Aerodynamic drag reduction apparatus for gap-divided bluff bodies such as tractor-trailers  

DOE Patents [OSTI]

An apparatus for reducing the aerodynamic drag of a bluff-bodied vehicle such as a tractor-trailer in a flowstream, the bluff-bodied vehicle of a type having a leading portion, a trailing portion connected to the leading portion, and a gap between the leading and trailing portions defining a recirculation zone. The apparatus is preferably a baffle assembly, such as a vertical panel, adapted to span a width of the gap between the leading and trailing portions so as to impede cross-flow through the gap, with the span of the baffle assembly automatically adjusting for variations in the gap width when the leading and trailing portions pivot relative to each other.

Ortega, Jason M. (Pacifica, CA); Salari, Kambiz (Livermore, CA)

2006-07-11T23:59:59.000Z

251

The role of gap phase processes in the biomass dynamics of tropical forests  

Science Journals Connector (OSTI)

...gap phase processes in the biomass dynamics of tropical forests...understood. Above-ground woody biomass in some tropical forest...greenhouse gas emissions from biomass burning, decomposition and soils forest in conversion, shifting cultivation and...

2007-01-01T23:59:59.000Z

252

Ternary silicon germanium nitrides: A class of tunable band gap materials  

Science Journals Connector (OSTI)

Ternary silicon germanium nitrides with compositions of both Si1?xGexN and (Si1?xGex)3N4 are predicted to have a band gap that decreases as the germanium:silicon ratio increases. The band gap is indirect for the silicon-rich compounds but becomes direct as the germanium content increases, due to greater mixing of s and p states in the conduction band. This effect of band gap tunability has recently been reported for (Si1?xGex)3N4 in the spinel structure [Boyko et al., Phys. Rev. B 81, 155207 (2010)]. Our results suggest that this is a more general effect and that ternary group-14 nitrides should form a class of semiconducting materials for which the band gap can be tuned by controlling the composition.

Judy N. Hart; Neil L. Allan; Frederik Claeyssens

2011-12-27T23:59:59.000Z

253

Photonic band gap of a graphene-embedded quarter-wave stack  

SciTech Connect (OSTI)

Here, we present a mechanism for tailoring the photonic band structure of a quarter-wave stack without changing its physical periods by embedding conductive sheets. Graphene is utilized and studied as a realistic, two-dimensional conductive sheet. In a graphene-embedded quarter-wave stack, the synergic actions of Bragg scattering and graphene conductance contributions open photonic gaps at the center of the reduced Brillouin zone that are nonexistent in conventional quarter-wave stacks. Such photonic gaps show giant, loss-independent density of optical states at the fixed lower-gap edges, of even-multiple characteristic frequency of the quarter-wave stack. The conductive sheet-induced photonic gaps provide a platform for the enhancement of light-matter interactions.

Fan, Yuancheng [Ames Laboratory; Wei, Zeyong [Tongji University; Li, Hongqiang [Tongji University; Chen, Hong [Tongji University; Soukoulis, Costas M [Ames Laboratory

2013-12-10T23:59:59.000Z

254

Strain-induced band-gap engineering of graphene monoxide and its effect on graphene  

Science Journals Connector (OSTI)

Using first-principles calculations we demonstrate the feasibility of band-gap engineering in two-dimensional crystalline graphene monoxide (GMO), a recently reported graphene-based material with a 1:1 carbon/oxygen ratio. The band gap of GMO, which can be switched between direct and indirect, is tunable over a large range (01.35 eV) for accessible strains. Electron and hole transport occurs predominantly along the zigzag and armchair directions (armchair for both) when GMO is a direct- (indirect-) gap semiconductor. A band gap of ?0.5 eV is also induced in graphene at the K? points for GMO/graphene hybrid systems.

H. H. Pu; S. H. Rhim; C. J. Hirschmugl; M. Gajdardziska-Josifovska; M. Weinert; J. H. Chen

2013-02-13T23:59:59.000Z

255

Review: Teach! Change! Empower! Solutions for Closing the Achievement Gaps by Carl A. Grant  

E-Print Network [OSTI]

the Achievement Gaps by Carl A. Grant. Thousand Oaks, CA:p. 7). In this spirit Carl A. Grant presents Teach! Change!In this workbook-like text, Grant stresses reflection as a

Turner, Rhonda J

2010-01-01T23:59:59.000Z

256

Direct gap photoluminescence of n-type tensile-strained Ge-on-Si  

E-Print Network [OSTI]

Room temperature direct gap photoluminescence (PL) was observed from n-type tensile-strained epitaxial Ge-on-Si. The PL intensity increases with n-type doping due to a higher electron population in the direct ? valley as ...

Sun, Xiaochen

257

Large inherent optical gain from the direct gap transition of Ge thin films  

E-Print Network [OSTI]

The recent demonstration of Ge-on-Si diode lasers renews the interest in the unique carrier dynamics of Ge involving both direct (?) and indirect (L) valleys. Here, we report a large inherent direct gap optical gain ...

Wang, Xiaoxin

258

Codes and Standards Gap Analysis Helps DOE Define Research Priorities (Fact Sheet)  

SciTech Connect (OSTI)

This fact sheet describes NREL's accomplishments in analyzing gaps in codes and standards for alternative vehicle fuels, including hydrogen. Work was performed by the Hydrogen Technologies and Systems Center.

Not Available

2010-11-01T23:59:59.000Z

259

E-Print Network 3.0 - auditory gap detection Sample Search Results  

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

Sample search results for: auditory gap detection Page: << < 1 2 3 4 5 > >> 1 Exp Brain Res (2005) 162: 172180 DOI 10.1007s00221-004-2128-2 Summary: what you hear: auditory...

260

A novel white-light scanning interferometer for absolute nano-scale gap thickness measurement  

E-Print Network [OSTI]

This paper presents a special configuration of white-light scanning interferometer, in which the measured gap is not located in any interference arm of the interferometer, but acts as an amplitude-and-phase modulator of ...

Xu, Zhiguang

Note: This page contains sample records for the topic "gap amor stadium" 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

Procedures for Filling Short Gaps in Energy Use and Weather Data  

E-Print Network [OSTI]

Filling short gaps (a few hours) in hourly energy use and weather data can be useful for (i) retrofit savings analysis and calculation, and for (ii) diagnostic purposes. The paper evaluates four methods for rehabilitating short periods of missing...

Chen, H.; Claridge, D. E.

2000-01-01T23:59:59.000Z

262

E-Print Network 3.0 - abort-gap monitor bsra Sample Search Results  

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

no rf structure (e.g., in abort... gap) 12;21403 US LARP Instrumentation Collaboration Mtg 6 Additional Instrumentation The US LARP Source: Large Hadron Collider Program - US...

263

Developing Secure Power Systems Professional Competence: Alignment and Gaps in Workforce Development ProgramsSummary Report  

SciTech Connect (OSTI)

This document is a summarization of the report, Developing Secure Power Systems Professional Competence: Alignment and Gaps in Workforce Development Programs, the final report for phase 2 of the SPSP (DOE workforce study) project.

O'Neil, Lori Ross; Assante, Michael; Tobey, D. H.; Conway, T. J.; Vanderhorst, Jr, T. J.; Januszewski, III, J.; Leo, R.; Perman, K.

2013-07-01T23:59:59.000Z

264

Triple photonic band-gap structure dynamically induced in the presence of spontaneously generated coherence  

SciTech Connect (OSTI)

We study a cold atomic sample coherently driven into the five-level triple-{Lambda} configuration for attaining a dynamically controlled triple photonic band-gap structure. Our numerical calculations show that three photonic band gaps with homogeneous reflectivities up to 92% can be induced on demand around the probe resonance by a standing-wave driving field in the presence of spontaneously generated coherence. All these photonic band gaps are severely malformed with probe reflectivities declining rapidly to very low values when spontaneously generated coherence is gradually weakened. The triple photonic band-gap structure can also be attained in a five-level chain-{Lambda} system of cold atoms in the absence of spontaneously generated coherence, which however requires two additional traveling-wave fields to couple relevant levels.

Gao Jinwei; Bao Qianqian; Wan Rengang; Cui Cuili; Wu Jinhui [College of Physics, Jilin University, Changchun 130012 (China)

2011-05-15T23:59:59.000Z

265

Helium gap in the warm dense matter regime and experimental reflectivity measurements  

Science Journals Connector (OSTI)

We revisit the reflectivity measurements of Celliers et al. [P. M. Celliers, P. Loubeyre, J. H. Eggert, S. Brygoo, R. S. McWilliams, D. G. Hicks, T. R. Boehly, R. Jeanloz, and G. W. Collins, Phys. Rev. Lett. 104, 184503 (2010)] for He at high density by taking into account a temperature dependence, based on existing ab initio calculations, in the functional form of the gap energy inferred from these data. We show that, when accounting for such a temperature dependence, the predicted behavior of the gap energy at high density differs significantly from the one suggested by Celliers et al. and that He is predicted to become metallic (gap closure) at much higher densities, around 10 g/cm3. High-pressure experiments over a larger temperature and density range are mandatory to correctly determine this gap behavior, a problem of crucial importance for astrophysical applications.

F. Soubiran, S. Mazevet, C. Winisdoerffer, and G. Chabrier

2012-09-04T23:59:59.000Z

266

Molten Carbonate and Phosphoric Acid Stationary Fuel Cells: Overview and Gap Analysis  

SciTech Connect (OSTI)

This report describes the technical and cost gap analysis performed to identify pathways for reducing the costs of molten carbonate fuel cell (MCFC) and phosphoric acid fuel cell (PAFC) stationary fuel cell power plants.

Remick, R.; Wheeler, D.

2010-09-01T23:59:59.000Z

267

Abstract CN05-01: Genomics and cancer management: Mind the gap!  

Science Journals Connector (OSTI)

...2013 meeting-abstract Carcinogenesis Genomics and Epigenetics of Risk Prediction in Early Disease Genomics and Epigenetics of Risk Prediction in...National Harbor, MD Abstract CN05-01: Genomics and cancer management: Mind the gap...

Janusz A. Jankowski

2013-11-01T23:59:59.000Z

268

Exploration of the Gap Between Computer Science Curriculum and Industrial I.T Skills Requirements  

E-Print Network [OSTI]

This paper sets out to examine the skills gaps between the industrial application of Information Technology and university academic programmes (curriculum). It looks at some of the causes, and considers the probable solutions for bridging the gap between them and suggests the possibilities of exploring a new role for our universities and employers of labor. It also highlights strategies to abolish the misalignment between university and industry. The main concept is to blend the academic rigidity with the industrial relevance.

Ayofe, Azeez Nureni

2009-01-01T23:59:59.000Z

269

Systematic Study of Electronic Phases, Band Gaps and Band Overlaps of Bismuth Antimony Nanowires  

E-Print Network [OSTI]

We have developed an iterative one dimensional model to study the narrow band-gap and the associated non-parabolic dispersion relations for bismuth antimony nanowires. An analytical approximation has also been developed. Based on the general model, we have developed, we have calculated and analyzed the electronic phase diagrams and the band-gap/band-overlap map for bismuth antimony nanowires, as a function of stoichiometry, growth orientation, and wire width.

Shuang Tang; Mildred Dresselhaus

2013-12-03T23:59:59.000Z

270

GAP OPENING BY EXTREMELY LOW-MASS PLANETS IN A VISCOUS DISK  

SciTech Connect (OSTI)

By numerically integrating the compressible Navier-Stokes equations in two dimensions, we calculate the criterion for gap formation by a very low mass (q {approx} 10{sup -4}) protoplanet on a fixed orbit in a thin viscous disk. In contrast with some previously proposed gap-opening criteria, we find that a planet can open a gap even if the Hill radius is smaller than the disk scale height. Moreover, in the low-viscosity limit, we find no minimum mass necessary to open a gap for a planet held on a fixed orbit. In particular, a Neptune-mass planet will open a gap in a minimum mass solar nebula with suitably low viscosity ({alpha} {approx}< 10{sup -4}). We find that the mass threshold scales as the square root of viscosity in the low mass regime. This is because the gap width for critical planet masses in this regime is a fixed multiple of the scale height, not of the Hill radius of the planet.

Duffell, Paul C.; MacFadyen, Andrew I., E-mail: pcd233@nyu.edu, E-mail: macfadyen@nyu.edu [Center for Cosmology and Particle Physics, New York University, 4 Washington Place, New York, NY 10003 (United States)

2013-05-20T23:59:59.000Z

271

Fundamental gaps with approximate density functionals: The derivative discontinuity revealed from ensemble considerations  

SciTech Connect (OSTI)

The fundamental gap is a central quantity in the electronic structure of matter. Unfortunately, the fundamental gap is not generally equal to the Kohn-Sham gap of density functional theory (DFT), even in principle. The two gaps differ precisely by the derivative discontinuity, namely, an abrupt change in slope of the exchange-correlation energy as a function of electron number, expected across an integer-electron point. Popular approximate functionals are thought to be devoid of a derivative discontinuity, strongly compromising their performance for prediction of spectroscopic properties. Here we show that, in fact, all exchange-correlation functionals possess a derivative discontinuity, which arises naturally from the application of ensemble considerations within DFT, without any empiricism. This derivative discontinuity can be expressed in closed form using only quantities obtained in the course of a standard DFT calculation of the neutral system. For small, finite systems, addition of this derivative discontinuity indeed results in a greatly improved prediction for the fundamental gap, even when based on the most simple approximate exchange-correlation density functional the local density approximation (LDA). For solids, the same scheme is exact in principle, but when applied to LDA it results in a vanishing derivative discontinuity correction. This failure is shown to be directly related to the failure of LDA in predicting fundamental gaps from total energy differences in extended systems.

Kraisler, Eli; Kronik, Leeor [Department of Materials and Interfaces, Weizmann Institute of Science, Rehovoth 76100 (Israel)] [Department of Materials and Interfaces, Weizmann Institute of Science, Rehovoth 76100 (Israel)

2014-05-14T23:59:59.000Z

272

Effect of gaps on the performance of the vertically installed wet thermal insulator  

SciTech Connect (OSTI)

In SMART, the main flow path of the reactor coolant and the pressurizer partially share common walls in the reactor coolant system. To reduce this heat transfer, the wet thermal insulator (WTI) is installed on the inner wall of the pressurizer. The WTI is constituted of stacked thin stainless steel plates. The water layer width between the plates is chosen to suppress natural convection in each layer. The plates of the WTI require clearance for thermal expansion. When the WTI is installed on a vertical wall, this clearance might cause gaps at the top and bottom at the operating condition. In this study, we focused on the effect of gaps at the both ends on the WTI performance. A numerical simulation was conducted for an 8-layer WTI with gaps at the both ends. To compare with this, a simulation of a WTI without a gap, which is an ideal case, was also conducted. The simulation was conducted in a 2-dimensional manner by a commercial computational fluid dynamics code, FLUENT. The simulations showed that the WTI thermal performance was substantially decreased by a flow that circulated through the top and bottom gaps and water layers at the sides of the WTI. This circulation caused a high temperature difference between the wall and the circulating flow. To find a way to prevent this performance deterioration of the WTI we simulated several cases with the smaller gap heights. However, the flow circulation and the higher heat transfer rate were still observed even at a case with the smallest gap, which seems to be hardly achievable in a real installation. Another way of reducing the flow circulation was suggested and also simulated in this study. (authors)

Kim, S. H.; Kim, Y. I.; Park, C. T.; Choi, S.; Yoon, J. [Korea Atomic Energy Research Inst., Daeduk-daero 989-111, Yuseong-Gu, Daejeon, 305-353 (Korea, Republic of)

2012-07-01T23:59:59.000Z

273

Geology of the Wallula Gap Area, Washington. [Grande Ronde, Wanapum, and Saddle Mountains basalts  

SciTech Connect (OSTI)

This study focuses on the structure and stratigraphy of an 80-km/sup 2/ area at the southern margin of the Pasco Basin in Wallula Gap. Field stratigraphy, petrography, natural remanent magnetism, and major-element chemistry indicate that the tholeiitic basalt flows of the Wallula Gap area correlate with units of the Grande Ronde, Wanapum, and Saddle Mountains Formations of the Yakima Subgroup of the Columbia River Basalt Group. Flows of the Frenchman Springs, Umatilla, Pomona, Elephant Mountain, and Ice Harbor Mmebers are present in the area. The Frenchman Springs Member exposed in the Wallula Gap is more than 185 m thick and consists of eight to nine flows. Its thickness and possible contemporaneous structural deformation apparently prevented emplacement of both the Roza and Priest Rapids Members at this locality. Structural uplift of the Horse Heaven Hills began prior to extrusion of the Pomona flow. Both the Pomona and Elephant Mountain Members thin and pinch out over the crest of the uplift near Mound Pond. The Ice Harbor flow was apparently confined to the basin north of the Horse Heaven uplift, but an exposure at Mound Pond suggests it flowed through Wallula Gap as an intracanyon flow. The Wallula Gap fault zone trends N65/sup 0/W and can be traced for at least 11 km along the north flank of the Horse Heaven Hills uplift. Where the fault intersects the Olympic-Wallowa Lineament at Van Sycle Canyon 8 km east of Wallula Gap, it is a broad zone of normal faulting, 300 m wide, with as much as 310 m of displacement of the basalt stratigraphy. Two faults occur in the northern portion of Van Sycle Canyon and define a graben trending N45/sup 0/W. A third fault, roughly parallel to the Wallula Gap fault, transects the The Nub and offsets 14 m of Ice Harbor basalt.

Gardner, J.N.; Snow, M.G.; Fecht, K.R.

1981-12-01T23:59:59.000Z

274

ANALYSIS OF THE AXIAL GAP VS FIBERBOARD MOISTURE CONTENT IN A 9975 SHIPPING PACKAGE  

SciTech Connect (OSTI)

The fiberboard assembly within a 9975 shipping package contains a modest amount of moisture, which can migrate to the cooler regions of the package when an internal heat load is present. Typically, this leads to increased moisture levels in the bottom fiberboard layers, along with elevated chloride levels which can leach from the fiberboard. Concerns have been raised that this condition could lead to corrosion of the stainless steel drum. It has been postulated that checking the axial gap at the top of the package against the current 1 inch maximum criterion provides a sufficient indication regarding the integrity of the fiberboard and drum. This report estimates the increase in axial gap that might be expected for a given moisture increase in the bottom fiberboard layers, and the likelihood that the increase will create a nonconforming condition that will lead to identification of the moisture increase. Using data relating the fiberboard moisture content with the degree of compaction under load, the present analysis indicates that the axial gap will increase by 0.282 inch as the bottom fiberboard layers approach the saturation point. This increase will cause approximately 58% of packages with otherwise nominal package component dimensions to fail the axial gap criterion, based on a survey of axial gap values recorded in K-Area surveillance activities. As the moisture content increases above saturation, the predicted increase in axial gap jumps to 0.405 inch, which would result in 92% or more of all packages failing the axial gap criterion. The data and analysis described in this report are specific to cane fiberboard. While it is expected that softwood fiberboard will behave similarly, such behavior has not yet been demonstrated.

Daugherty, W.

2013-09-30T23:59:59.000Z

275

Avian response to microclimate in canopy gaps in a bottomland hardwood forest.  

SciTech Connect (OSTI)

Abstract - Microclimate may infl uence use of early successional habitat by birds. We assessed the relationships between avian habitat use and microclimate (temperature, light intensity, and relative humidity) in experimentally created canopy gaps in a bottomland hardwood forest on the Savannah River Site, SC. Gaps were 2- to 3-year-old group-selection timber harvest openings of three sizes (0.13, 0.26, 0.50 ha). Our study was conducted from spring through fall, encompassing four bird-use periods (spring migration, breeding, post-breeding, and fall migration), in 2002 and 2003. We used mist netting and simultaneously recorded microclimate variables to determine the influence of microclimate on bird habitat use. Microclimate was strongly affected by net location within canopy gaps in both years. Temperature generally was higher on the west side of gaps, light intensity was greater in gap centers, and relative humidity was higher on the east side of gaps. However, we found few relationships between bird captures and the microclimate variables. Bird captures were inversely correlated with temperature during the breeding and postbreeding periods in 2002 and positively correlated with temperature during spring 2003. Captures were high where humidity was high during post-breeding 2002, and captures were low where humidity was high during spring 2003. We conclude that variations in the local microclimate had minor infl uence on avian habitat use within gaps. Instead, habitat selection in relatively mild regions like the southeastern US is based primarily on vegetation structure, while other factors, including microclimate, are less important.

Champlin, Tracey B.; Kilgo, John C.; Gumpertz, Marcia L.; Moorman, Christopher E.

2009-04-01T23:59:59.000Z

276

?Thermo-Hydraulic Performance of a Roughened Square Duct Having Inclined Ribs with a Gap on Two Opposite Walls  

E-Print Network [OSTI]

Abstract:- Experimentation has been carried out to find the influence of a gap provided in ribs on thermohydraulic performance of a square duct roughened with discrete inclined ribs. The two opposite walls of the square duct are roughened with ribs having attack angle (?) of 45 0 and a gap on its length. The investigation has been performed for relative roughness pitch (p/e) of 10, relative roughness height (e/Dh) of 0.060 and Reynolds number is varied in the range of 5000-40,000. The other rib parameters; relative gap position (d/W) and relative gap width (g/e) is varied in the range of 1/4 2/3(4 steps) and 0.5 1.5 (3 steps) respectively. The comparative study of various cases shows that the ribs with a gap considerably enhance the value of thermohydraulic performance for the range of parameters taken for the present investigation. Presence of inclined ribs with a gap yields about 2.1-fold enhancements in thermo-hydraulic performance as compared to smooth duct. The maximum value of thermo-hydraulic performance parameter has been observed for relative gap width of 1.0 and the relative gap position of 1/3. Keywords:- Relative gap width, Relative gap position, Reynolds number, Thermo-hydraulic performance. I.

unknown authors

277

A New Gap-Opening Mechanism in a Triple-Band Metal  

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

A New Gap-Opening Mechanism in a Triple-Band Metal Print A New Gap-Opening Mechanism in a Triple-Band Metal Print A "wire" of indium only one or a few atoms wide grown on a silicon surface comprises an ideal test laboratory for studying one-dimensional (1D) metals. A new example comes from a collaboration between researchers from Yonsei University in Korea, the ALS, and the University of Oregon, who have discovered that the phase transition from metal to insulator that occurs at low temperature in indium wires on the silicon (111) surface involves not only the expected shift in the electronic structure (band-gap opening) but also a band restructuring that gives rise to an energy gap in a second band. Three's a Crowd For the condensed-matter physicist, the words "electronic structure" are what it's all about. Short-hand for a description of the way electrons behave in solids, liquids, molecules, and even atoms, electronic structure underlies almost all of the everyday properties of matter from structural strength to electrical conductivity. For example, metals conduct electricity because some of their electrons have access to a continuous band of energies, whereas a break or gap in the band turns the metal into an insulator.

278

A New Gap-Opening Mechanism in a Triple-Band Metal  

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

A New Gap-Opening Mechanism in a Triple-Band Metal Print A New Gap-Opening Mechanism in a Triple-Band Metal Print A "wire" of indium only one or a few atoms wide grown on a silicon surface comprises an ideal test laboratory for studying one-dimensional (1D) metals. A new example comes from a collaboration between researchers from Yonsei University in Korea, the ALS, and the University of Oregon, who have discovered that the phase transition from metal to insulator that occurs at low temperature in indium wires on the silicon (111) surface involves not only the expected shift in the electronic structure (band-gap opening) but also a band restructuring that gives rise to an energy gap in a second band. Three's a Crowd For the condensed-matter physicist, the words "electronic structure" are what it's all about. Short-hand for a description of the way electrons behave in solids, liquids, molecules, and even atoms, electronic structure underlies almost all of the everyday properties of matter from structural strength to electrical conductivity. For example, metals conduct electricity because some of their electrons have access to a continuous band of energies, whereas a break or gap in the band turns the metal into an insulator.

279

Gap-Size Distribution Functions of a Random Sequential Adsorption Model of Segments on the Line  

E-Print Network [OSTI]

We performed extensive simulations accompanied by a detailed study of a two-segment size random sequential model on the line. We followed the kinetics towards the jamming state, but we paid particular attention to the characterization of the jamming state structure. In particular, we studied the effect of the size ratio on the mean-gap size, the gap-size dispersion, gap-size skewness, and gap-size kurtosis at the jamming state. We also analyzed the above quantities for the four possible segment-to-segment gap types. We ranged the values of the size ratio from one to twenty. In the limit of a size ratio of one, one recovers the classical car-parking problem. We observed that at low size ratios the jamming state is constituted by short streaks of small and large segments, while at high values of the size ratio the jamming state structure is formed by long streaks of small segments separated by a single large segment. This view of the jamming state structure as a function of the size ratio is supported by the various measured quantities. The present work can help provide insight, for example, on how to minimize the interparticle distance or minimize fluctuations around the mean particle-to-particle distance.

N. A. M. Araujo; A. Cadilhe

2004-04-18T23:59:59.000Z

280

Solar UV-B in tropical forest gaps: Analysis using direct and diffuse radiation  

SciTech Connect (OSTI)

Experiments with natural levels of solar ultraviolet-B radiation (UV-B) have recently shown inhibition of the growth of some tropical forest tree seedlings. A knowledge of forest radiation environments is needed to help assess UV-B effects in natural situations. Although forest canopies strongly attenuate solar radiation, treefall gaps provide a very different radiation environment. We simultaneously measured both UV-B and photosynthetically active radiation (PAR) in forest gaps on Barro Colorado Island, Panama. Outside the forest, UV-B is predominately diffuse even under clear sky conditions. In sunflecks of small forest gaps, most of the UV-B was in the direct beam component. Compared to conditions outside the forest, the UV-B in these sunflecks was low relative to PAR. Shaded portions of the gap, in contrast, had proportionately high levels of UV-B relative to PAR. There are indications in the literature that relatively low UV-B levels may be effective under low PFD. Seasonal trends of PAR and UV-B in different locations in gaps can be inferred from hemispherical canopy photographs.

Flint, S.D.; Caldwell, M.M. [Utah State Univ., Logan, UT (United States)

1995-06-01T23:59:59.000Z

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281

Band gaps in InN/GaN superlattices: Nonpolar and polar growth directions  

SciTech Connect (OSTI)

The electronic structures of nonpolar short-period InN/GaN superlattices (SLs) grown in the wurtzite a- and m-directions have been calculated and compared to previous calculations for polar superlattices (grown in the c-direction). The variation of the band gaps with the composition (m, n) of the mInN/nGaN unit cells of the superlattices was examined. The band structures were obtained by self-consistent calculations based on the local density approximation to the density functional theory using the Linear-Muffin-Tin-Orbital method with a semi-empirical correction for the band gaps. The calculated band gaps and their pressure coefficients for nonpolar superlattices are similar to those calculated for bulk InGaN alloys with an equivalent In/Ga concentration ratio. This is very different from what has been found in polar superlattices where the band gaps are much smaller and vanish when the number m of InN layers in the unit cell exceeds three. A strong internal electric field is responsible for this behavior of polar structures. Experimental photoluminescence data for polar SLs agree very well with gaps calculated for the nonpolar structures. It is suggested that this is caused by screening of the electric field in the polar structures by carriers originating from unintentional defects.

Gorczyca, I., E-mail: iza@unipress.waw.pl; Skrobas, K.; Suski, T. [Institute of High Pressure Physics, UNIPRESS, 01-142 Warsaw (Poland); Christensen, N. E.; Svane, A. [Department of Physics and Astronomy, Aarhus University, DK-8000 Aarhus C (Denmark)

2013-12-14T23:59:59.000Z

282

A New Gap-Opening Mechanism in a Triple-Band Metal  

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

A New Gap-Opening Mechanism in a Triple-Band Metal Print A New Gap-Opening Mechanism in a Triple-Band Metal Print A "wire" of indium only one or a few atoms wide grown on a silicon surface comprises an ideal test laboratory for studying one-dimensional (1D) metals. A new example comes from a collaboration between researchers from Yonsei University in Korea, the ALS, and the University of Oregon, who have discovered that the phase transition from metal to insulator that occurs at low temperature in indium wires on the silicon (111) surface involves not only the expected shift in the electronic structure (band-gap opening) but also a band restructuring that gives rise to an energy gap in a second band. Three's a Crowd For the condensed-matter physicist, the words "electronic structure" are what it's all about. Short-hand for a description of the way electrons behave in solids, liquids, molecules, and even atoms, electronic structure underlies almost all of the everyday properties of matter from structural strength to electrical conductivity. For example, metals conduct electricity because some of their electrons have access to a continuous band of energies, whereas a break or gap in the band turns the metal into an insulator.

283

Gamma-Ray Burst Polarimeter - GAP - aboard the Small Solar Power Sail Demonstrator IKAROS  

E-Print Network [OSTI]

The small solar power sail demonstrator "IKAROS" is a Japanese engineering verification spacecraft launched by H-IIA rocket on May 21, 2010 at JAXA Tanegashima Space Center. IKAROS has a huge sail with 20 m in diameter which is made of thin polyimide membrane. This sail converts the solar radiation-pressure into the propulsion force of IKAROS and accelerates the spacecraft. The Gamma-Ray Burst Polarimeter (GAP) aboard IKAROS is the first polarimeter to observe the gamma-ray polarization of Gamma-Ray Bursts (GRBs) during the IKAROS cruising phase. GAP is a tinny detector of 3.8 kg in weight and 17 cm in size with an energy range between 50-300 keV. The GAP detector also plays a role of the interplanetary network (IPN) to determine the GRB direction. The detection principle of gamma-ray polarization is the anisotropy of the Compton scattering. GAP works as the GRB polarimeter with the full coincidence mode between the central plastic and the surrounding CsI detectors. GAP is the first instrument, devoted for th...

Yonetoku, D; Gunji, S; Mihara, T; Sakashita, T; Morihara, Y; Kikuchi, Y; Fujimoto, H; Toukairin, N; Kodama, Y; Kubo, S

2010-01-01T23:59:59.000Z

284

Event:GGKP-Green Growth: Addressing the Knowledge Gaps Day 2 | Open Energy  

Open Energy Info (EERE)

3 3 The Green Growth Knowledge Platform (GGKP) will hold its inaugural conference, "Green Growth: Addressing the Knowledge Gaps," January 12-13, 2012, in Mexico City Mexico. The conference aims to take stock of the current understanding of the economics of green growth; engage researchers and practitioners in an ongoing dialogue to increase understanding of how green growth approaches can be applied in the field; identify knowledge gaps and establish priorities for knowledge-building work and implementation; and launch follow-on efforts. The conference location will allow attendees to benefit from Mexico's experiences from taking a leading role internationally in advocating pathways to green development. Event Details Name GGKP-Green Growth: Addressing the Knowledge Gaps

285

Bridging the Gap: Helping Small Businesses With Big Ideas Develop New  

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

Bridging the Gap: Helping Small Businesses With Big Ideas Develop Bridging the Gap: Helping Small Businesses With Big Ideas Develop New Industries Bridging the Gap: Helping Small Businesses With Big Ideas Develop New Industries October 25, 2011 - 3:59pm Addthis Semprius, solar panels shown above, announced that it is building a factory in Henderson, NC to manufacture its high concentration photovoltaic (HCPV) solar modules and is expected to create more than 250 full-time jobs over the next five years. Semprius, solar panels shown above, announced that it is building a factory in Henderson, NC to manufacture its high concentration photovoltaic (HCPV) solar modules and is expected to create more than 250 full-time jobs over the next five years. Keri Fulton Public Affairs Specialist, Office of Public Affairs What does this mean for me?

286

EIS-0400: Granby Pumping Plant Switchyard-Windy Gap Substation Transmission  

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

EIS-0400: Granby Pumping Plant Switchyard-Windy Gap Substation EIS-0400: Granby Pumping Plant Switchyard-Windy Gap Substation Transmission Line Rebuild Project, Grand County, CO EIS-0400: Granby Pumping Plant Switchyard-Windy Gap Substation Transmission Line Rebuild Project, Grand County, CO Summary Western Area Power Administration prepared an EIS, with the U.S. Forest Service, Bureau of Land Management, and Grand County (Colorado) as cooperating agencies, to evaluate the potential environmental impacts of rebuilding a 12-mile, 69-kV electric transmission line in Grand County. The proposed project would rebuild the single-circuit line as a double-circuit transmission line and add a second power transformer. Western identified potentially significant impacts while preparing an EA for this proposal (DOE/EA-1520) and prepared an EIS instead of completing

287

A Method to Improve Voltage Holding Across Vacuum Electrical Gaps to  

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

A Method to Improve Voltage Holding Across Vacuum Electrical Gaps to A Method to Improve Voltage Holding Across Vacuum Electrical Gaps to Improve the Performance and Reduce the Conditioning Time by Removing Bacteria, Fungi, and Other Microbial Organisms and Their Spores. -- . Inventor Larry Grisham. Disclosed is a method to potentially increase the performance of devices which employ electric field within a vacuum by increasing the magnitude of the electric field gradient which can be sustained, the reliability of the devices, and by reducing the conditioning time of devices such as charged particle accelerators when they are brought into operation. The disclosed method can be employed, for example, for devices requiring voltages across vacuum gaps, such as, but not limited to, charged particle accelerators, X-ray machines, vacuum tubes, and vacuum electrical breakers.

288

EIS-0400: Granby Pumping Plant Switchyard-Windy Gap Substation Transmission  

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

00: Granby Pumping Plant Switchyard-Windy Gap Substation 00: Granby Pumping Plant Switchyard-Windy Gap Substation Transmission Line Rebuild Project, Grand County, CO EIS-0400: Granby Pumping Plant Switchyard-Windy Gap Substation Transmission Line Rebuild Project, Grand County, CO Summary Western Area Power Administration prepared an EIS, with the U.S. Forest Service, Bureau of Land Management, and Grand County (Colorado) as cooperating agencies, to evaluate the potential environmental impacts of rebuilding a 12-mile, 69-kV electric transmission line in Grand County. The proposed project would rebuild the single-circuit line as a double-circuit transmission line and add a second power transformer. Western identified potentially significant impacts while preparing an EA for this proposal (DOE/EA-1520) and prepared an EIS instead of completing

289

DOE - Office of Legacy Management -- Crooks Gap AEC Ore Buying Station - WY  

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

Crooks Gap AEC Ore Buying Station - Crooks Gap AEC Ore Buying Station - WY 0-02 FUSRAP Considered Sites Site: Crooks Gap AEC Ore Buying Station (WY.0-02 ) Designated Name: Alternate Name: Location: Evaluation Year: Site Operations: Site Disposition: Radioactive Materials Handled: Primary Radioactive Materials Handled: Radiological Survey(s): Site Status: The history of domestic uranium procurement under U.S. Atomic Energy Commission (AEC) contracts identifies a number of ore buying stations (sampling and storage sites) that were operated during the period late-1949 through the mid-1960s. During this period the AEC established ore-buying stations in new uranium producing areas where it appeared that ore production would be sufficient to support a uranium milling operation. The

290

Gap Analysis to Support Extended Storage of Used Nuclear Fuel | Department  

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

Gap Analysis to Support Extended Storage of Used Nuclear Fuel Gap Analysis to Support Extended Storage of Used Nuclear Fuel Gap Analysis to Support Extended Storage of Used Nuclear Fuel The U.S. Department of Energy Office of Nuclear Energy (DOE-NE), Office of Fuel Cycle Technology, has established the Used Fuel Disposition Campaign (UFDC) to conduct the research and development activities related to storage, transportation, and disposal of used nuclear fuel and high-level radioactive waste. The mission of the UFDC is to identify alternatives and conduct scientific research and technology development to enable storage, transportation and disposal of used nuclear fuel (UNF) and wastes generated by existing and future nuclear fuel cycles. The Storage and Transportation staff within the UFDC are responsible for addressing issues regarding the

291

Research in Energy Innovation: the Need to Fill Gaps and Manage Uncertainty  

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

Research in Energy Innovation: the Need to Fill Gaps and Manage Uncertainty Research in Energy Innovation: the Need to Fill Gaps and Manage Uncertainty Speaker(s): Laura Diaz Anadon Date: November 2, 2012 - 4:00pm Location: 90-3122 Seminar Host/Point of Contact: Ryan Wiser Innovation in energy technologies is necessary to confront profound challenges facing countries all over the world. Concerns regarding resource availability, the environment, health, national security, competitiveness, and access are driving government efforts to accelerate innovation in energy supply, end-use, and storage technologies. This talk will outline the tools available to governments to shape innovation in the energy sector and will discuss some of the most important knowledge gaps. It will then delve into recent research identifying the factors contributing to

292

Quantum adiabatic computation with a constant gap is not useful in one dimension  

SciTech Connect (OSTI)

We show that it is possible to use a classical computer to efficiently simulate the adiabatic evolution of a quantum system in one dimension with a constant spectral gap, starting the adiabatic evolution from a known initial product state. The proof relies on a recently proven area law for such systems, implying the existence of a good matrix product representation of the ground state, combined with an appropriate algorithm to update the matrix product state as the Hamiltonian is changed. This implies that adiabatic evolution with such Hamiltonians is not useful for universal quantum computation. Therefore, adiabatic algorithms which are useful for universal quantum computation either require a spectral gap tending to zero or need to be implemented in more than one dimension (we leave open the question of the computational power of adiabatic simulation with a constant gap in more than one dimension).

Hastings, Matthew [Los Alamos National Laboratory

2009-01-01T23:59:59.000Z

293

Gap-Inhomogeneity-Induced Electronic States in Superconducting Bi2Sr2CaCu2O8+delta  

SciTech Connect (OSTI)

In this Letter, we analyze, using scanning tunneling spectroscopy, the density of electronic states in nearly optimally doped Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+{delta}} in zero magnetic field. Focusing on the superconducting gap, we find patches of what appear to be two different phases in a background of some average gap, one with a relatively small gap and sharp large coherence peaks and one characterized by a large gap with broad weak coherence peaks. We compare these spectra with calculations of the local density of states for a simple phenomenological model in which a 2{zeta}{sub 0} x 2{zeta}{sub 0} patch with an enhanced or suppressed d-wave gap amplitude is embedded in a region with a uniform average d-wave gap.

Fang, A.C.

2010-02-25T23:59:59.000Z

294

Superconductive Mini-Gap Undulators - A New Way To High Energy Photons: Latest News  

SciTech Connect (OSTI)

New applications of Synchroton Radiation (e.g. protein crystallography or FEL) require a high flux of high-brilliance and high-energy photons. This goal can be achieved by use of a superconducting small gap in-vacuo undulator in existing or future storage rings. The range of gap size, magnetic field and period length covered by ACCEL's actual design will be presented. The impact of upstream components in the storage ring and beam properties, respectively, on the layout of the Insertion Device, will be discussed. Emphasis will be put on new magnetic measurement data from the first full length device built.

Kubsky, S.; Doelling, D.; Geisler, A.; Hobl, A.; Klein, U.; Krischel, D. [ACCEL Instruments GmbH (Germany); Moser, H. O. [Singapore Synchrotron Light Source, National University of Singapore (Singapore); Rossmanith, R.; Chouhan, S. [Institute for Synchrotron Radiation, FZK (Germany)

2004-05-12T23:59:59.000Z

295

Atomic geometry of the 22 GaP(111) surface  

Science Journals Connector (OSTI)

Integral and fractional order beam low-energy electron-diffraction intensity-voltage (I-V) data have been taken on a bombardment-annealed GaP(111)-(22) surface. We have compared these data with calculated I-V curves using a dynamical multiple scattering theory and found very good agreement for the following model: One out of every four Ga surface atoms is missing and the surface Ga-P bilayer is almost coplanar. Surface and deeper layer atoms undergo vertical and lateral displacements from bulk positions. Similar results in other systems suggest that the vacancy model applies on the (111) face of many compound semiconductors.

G. Xu; W. Y. Hu; M. W. Puga; S. Y. Tong; J. L. Yeh; S. R. Wang; B. W. Lee

1985-12-15T23:59:59.000Z

296

Influence of discharge gap on the discharge stability in a short vacuum arc ion source  

SciTech Connect (OSTI)

The influence of the discharge gap between cathode and anode on the discharge stability in a short vacuum arc (SVA) ion source is presented in this paper. Planar cathode and cylindrical hollow anode made of titanium are investigated. There is a great need in present accelerator injection research for SVA source to produce the small deviation of the ion current beam. Current research shows that increasing the short discharge gap can reduce the level of ion current deviation and ion charge deviation from 29% and 31% to 15% and 17%, respectively. A microplasma plume generation mechanism in SVA and scanning electron microscopic results can be used to explain this interesting phenomenon.

Chen, L. [Institute of Electronic Engineering, China Academy of Engineering Physics, Mianyang, Sichuan 621900 (China); Department of Engineering Physics, Tsinghua University, Beijing 100084 (China); Zhang, G. L.; Jin, D. Z.; Dai, J. Y. [Institute of Electronic Engineering, China Academy of Engineering Physics, Mianyang, Sichuan 621900 (China); Yang, L. [Institute of Nuclear Science and Technology, Louzhou University, Lanzhou, Gansu 730000 (China)

2012-02-15T23:59:59.000Z

297

Assessment of the Passivation Capabilities of Two Different Covalent Chemical Modifications on GaP(100)  

Science Journals Connector (OSTI)

With respect to toxicity, the UDA-functionalized GaP provided better passivation which was confirmed by less gallium leaching into water and saline solutions. ... Due to its promising characteristics for device fabrication, gallium arsenide (GaAs) has been extensively studied and the formation of self-assembled monolayers has been of interest. ... A general increase in the Ga/P ratio can be seen in the surfaces exposed to solutions compared to the clean surface which is attributed to the greater solubility of the phosphorus oxide (P2O5) compared to the gallium oxide (Ga2O3). ...

David Richards; Dmitry Zemlyanov; Albena Ivanisevic

2010-02-03T23:59:59.000Z

298

Immunomodulation by atorvastatin upregulates expression of gap junction proteins in coxsackievirus B3 (CVB3)-induced myocarditis  

Science Journals Connector (OSTI)

To investigate the effect of atorvastatin on myocardial expression of gap junction proteins, connexins (Cxs), during coxsackievirus B3 (CVB3)-induced myocarditis.

Alian Zhang; Huili Zhang; Shiyao Wu

2010-04-01T23:59:59.000Z

299

Multi-gap Resistive Plate Chambers as a Time-of-Flight System for the PHENIX Experiment  

SciTech Connect (OSTI)

In this project a Time-of-Flight detector based on multi-gap resistive plate chambers was built and installed for the PHENIX experiment at RHIC.

Velkovska, Julia [Vanderbilt University] [Vanderbilt University

2013-12-08T23:59:59.000Z

300

Fact #850: December 8, 2014 Automatic Transmissions have closed the Fuel Economy Gap with Manual Transmissions- Dataset  

Broader source: Energy.gov [DOE]

Excel file with dataset for Fact #850: December 8, 2014 Automatic Transmissions have closed the Fuel Economy Gap with Manual Transmissions

Note: This page contains sample records for the topic "gap amor stadium" 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

Closing the Gap to the Capacity of APSK: Constellation Shaping and Degree Distributions  

E-Print Network [OSTI]

7 / 21 #12;Constellation Shaping Constellation Shaping The energy efficiency can be improved.5 1 1.5 2 Figure : Uniform 32APSK vs. shaped 32APSK. Both constellations have the same energy. -10 0Closing the Gap to the Capacity of APSK: Constellation Shaping and Degree Distributions Matthew C

Valenti, Matthew C.

302

Healing of Adsorbed Polymer Layers in a Narrow Gap Following Removal by  

E-Print Network [OSTI]

Healing of Adsorbed Polymer Layers in a Narrow Gap Following Removal by Shear Uri Raviv1 Mw = 37 kg/mol adsorbed onto smooth, curved solid (mica) surfaces across the good solvent toluene similar to those measured in earlier studies between adsorbed PEO layers. The shearing motion causes

Klein, Jacob

303

Bridging the Gaps between eTransforming SMEs and SME -ICT Providers  

E-Print Network [OSTI]

of what eTransforming SMEs need based on their current technology and future business requirements. Keywords: SMEs, eTransformation, Information and Communication Technology, ICT providers 1 IntroductionBridging the Gaps between eTransforming SMEs and SME - ICT Providers Ana Hol1 and Athula Ginige1

Boyer, Edmond

304

Lift-and-Project Integrality Gaps for the Traveling Salesperson Problem  

E-Print Network [OSTI]

We study the lift-and-project procedures of Lov{\\'a}sz-Schrijver and Sherali-Adams applied to the standard linear programming relaxation of the traveling salesperson problem with triangle inequality. For the asymmetric TSP tour problem, Charikar, Goemans, and Karloff (FOCS 2004) proved that the integrality gap of the standard relaxation is at least 2. We prove that after one round of the Lov{\\'a}sz-Schrijver or Sherali-Adams procedures, the integrality gap of the asymmetric TSP tour problem is at least 3/2, with a small caveat on which version of the standard relaxation is used. For the symmetric TSP tour problem, the integrality gap of the standard relaxation is known to be at least 4/3, and Cheung (SIOPT 2005) proved that it remains at least 4/3 after $o(n)$ rounds of the Lov{\\'a}sz-Schrijver procedure, where $n$ is the number of nodes. For the symmetric TSP path problem, the integrality gap of the standard relaxation is known to be at least 3/2, and we prove that it remains at least 3/2 after $o(n)$ rounds...

Watson, Thomas

2011-01-01T23:59:59.000Z

305

Cognitive, Non-Cognitive Skills and Gender Wage Gaps: Evidence from Linked  

E-Print Network [OSTI]

Cognitive, Non-Cognitive Skills and Gender Wage Gaps: Evidence from Linked Employer-Employee Data of measures of cognitive and non-cognitive skills. Our results show that personality traits have little for wages of female employees, and in certain parts of the wage distribution. Cognitive skills as measured

Bandyopadhyay, Antar

306

Bridging the Gap between the Business Processes and the Service Oriented Architecture  

E-Print Network [OSTI]

Bridging the Gap between the Business Processes and the Service Oriented Architecture Karim Dahman computerized software solutions. The Service Oriented Architecture (SOA [2]) has emerged as a new paradigm]. However, as UML is neither fully service-oriented, nor business process-centered, it needs to address

Paris-Sud XI, Université de

307

Landau-Zener Transitions Through Small Electronic Eigenvalue Gaps in the Born-Oppenheimer  

E-Print Network [OSTI]

Landau-Zener Transitions Through Small Electronic Eigenvalue Gaps in the Born-Oppenheimer it is not practical to solve the time-dependent Schr"odinger equation d* *irectly, the time-dependent Born-Oppenheimer of the masses of the nuclei. In the standard time-dependent Born-Oppenheimer approximation, the electrons

Joye, Alain

308

LandauZener Transitions Through Small Electronic Eigenvalue Gaps in the Born-Oppenheimer  

E-Print Network [OSTI]

Landau­Zener Transitions Through Small Electronic Eigenvalue Gaps in the Born-Oppenheimer­dependent Born­Oppenheimer approximation is a principal tool for studying molecular dynamics. This approximation to the average of the masses of the nuclei. In the standard time­dependent Born­Oppenheimer approximation

Hagedorn, George A.

309

A two-dimensional electrodynamical outer gap model for -ray pulsars: -ray spectrum  

Science Journals Connector (OSTI)

......abscissa represents the arc length with the origin...the field-aligned electric field becomes strong...gap by the positive electric field, the positive electric field will be held...if the effect of the discharge of the pairs is taken......

J. Takata; S. Shibata; K. Hirotani; H-K. Chang

310

Uncertainty of Oil Field GHG Emissions Resulting from Information Gaps: A Monte Carlo Approach  

Science Journals Connector (OSTI)

Uncertainty of Oil Field GHG Emissions Resulting from Information Gaps: A Monte Carlo Approach ... Regulations on greenhouse gas (GHG) emissions from liquid fuel production generally work with incomplete data about oil production operations. ... We study the effect of incomplete information on estimates of GHG emissions from oil production operations. ...

Kourosh Vafi; Adam R. Brandt

2014-08-10T23:59:59.000Z

311

The political gender gap: Gender bias in facial inferences that predict voting behavior  

E-Print Network [OSTI]

1 The political gender gap: Gender bias in facial inferences that predict voting behavior Joan Y human history, a disproportionate degree of political power around the world has been held by men. Even in democracies where the opportunity to serve in top political positions is available to any individual elected

Chiao, Joan Y.

312

Optical gain from the direct gap transition of Ge-on-Si at room temperature  

E-Print Network [OSTI]

We report direct band gap optical gain of tensile strained n+ epitaxial Ge-on-Si at room temperature, which confirms that band-engineered Ge-on-Si is a promising gain medium for monolithic optical amplifiers and lasers on Si.

Liu, Jifeng

313

Arthropod abundance and seasonal bird use of bottomland forest harvest gaps.  

SciTech Connect (OSTI)

We investigated the influence of arthropod abundance and vegetation structure on shifts in avian use of canopy gap, gap edge, and surrounding forest understory in a bottomland hardwood forest in the Upper Coastal Plain of South Carolina. We compared captures of foliage-gleaning birds among locations during four periods (spring migration, breeding, post-breeding, and fall migration). Foliage arthropod densities were greatest in the forest understory in all four seasons, but understory vegetation density was greatest in gaps. Foliage-gleaning bird abundance was positively associated with foliage-dwelling arthropods during the breeding (F = 18.5, P < 0.001) and post-breeding periods (F = 9.4, P = 0.004), and negatively associated with foliage-dwelling arthropods during fall migration (F = 5.4, P = 0.03). Relationships between birds and arthropods were inconsistent, but the arthropod prey base seemed to be least important during migratory periods. Conversely, bird captures were positively correlated with understory vegetation density during all four periods (P < 0.001). Our study suggests high bird abundance associated with canopy gaps during the non-breeding period resulted less from high arthropod food resource availability than from complex understory and midstory vegetation structure.

Moorman, Christopher, E.; Bowen, Liessa T.; Kilgo, John, C.; Hanula, James, L.; Horn, Scott; Ulyshen, Michael, D.

2012-03-01T23:59:59.000Z

314

Water development for hydroelectric in southeastern Anatolia project (GAP) in Turkey  

Science Journals Connector (OSTI)

Southeastern Anatolia Project (GAP) region in Turkey is rich in water for irrigation and hydroelectric power. The Euphrates and Tigris rivers represent over 28% of the nations water supply by rivers, and the economically irrigable areas in the region make up 20% of those for the entry country. On the other hand, 85% of the total hydro capacity in operation has been developed by DSI, corresponding to 9931MW (49 hydro plants) and 35,795GWh/year respectively. The largest and most comprehensive regional development project ever implemented by DSI in Turkey is The Southeast Anatolian (GAP) Project, which is located in the region of Southeast Anatolia on the Euprates and Tigris rivers and their tributaries, which originate in Turkey. The energy potential of the Tigris and Euphrates is estimated as 12,000GWh and 35,000GWh, respectively. These two rivers constitute 10% and 30% of the total hydroelectric energy potential. The GAP region will be an important electric power producer with 1000MW installed capacity from the Karakaya dam, 2400MW installed capacity from the Atatrk dam and 1360MW installed capacity from the Keban dam. The GAP region has a 22% share of the countrys total hydroelectric potential, with plans for 22 dams and 19 hydroelectric power plants. Once completed, 27 billionkWh of electricity will be generated annually.

Ibrahim Yuksel

2012-01-01T23:59:59.000Z

315

Sub-nanometer Displacement Sensing for the Nanogate A Tunable Nanometer Gap  

E-Print Network [OSTI]

for the Nanogate including the sensor design, fabrica- Metal layers to prevent anodic bond C Tunable nanometer gap Deflection Fluid inlet Bottom electrode Anodic Si-Pyrex bond Figure 1. Schematic Cross sectionµm tall and 2.25mm in diameter. This ring is anodically bonded to the Pyrex glass diaphragm to form

316

Summary of Gaps and Barriers for Implementing Residential Building Energy Efficiency Strategies  

Broader source: Energy.gov [DOE]

This report presents the key gaps and barriers to implementing residential energy efficiency strategies in the U.S. market, as identified in sessions at the U.S. Department of Energy's Building America 2010 Residential Energy Efficiency Meeting held in Denver, Colorado, on July 20-22, 2010.

317

Another Hanukkah Miracle: The Gaps Between Consecutive Christmas-in-Hanukkah Years is ALWAYS a Fibonacci *  

E-Print Network [OSTI]

. The last year is 8473, where we would light the first candle on Christmas Eve* *. After that Hanukkah Another Hanukkah Miracle: The Gaps Between Consecutive Christmas In fond memory of Marvin Isadore Knopp (1933-2011) z"l* *, who left us this Christmas Eve

Zeilberger, Doron

318

Studies of electrical breakdown processes across vacuum gaps between metallic electrodes  

E-Print Network [OSTI]

Studies of electrical breakdown processes across vacuum gaps between metallic electrodes L Available online 3 June 2013 Keywords: Magnetic insulation Vacuum electrical breakdown Bacteria-induced electrical breakdown Accelerator a b s t r a c t An experimental program to elucidate the physical causes

Gilson, Erik

319

Studies of electrical breakdown processes across vacuum gaps between metallic electrodes  

E-Print Network [OSTI]

Studies of electrical breakdown processes across vacuum gaps between metallic electrodes L Keywords: Magnetic insulation Vacuum electrical breakdown Bacteria-induced electrical breakdown Accelerator a b s t r a c t An experimental program to elucidate the physical causes of electrical breakdown

Gilson, Erik

320

High-efficient solar power systems based on thermionic converter with small gap  

SciTech Connect (OSTI)

Various configurations of power systems based on thermionic converter with small interelectrode gap have been considered. The results of studies of systems energy characteristics are presented. The high efficiency and perspectivety of such systems for different applications have been shown. {copyright} {ital 1996 American Institute of Physics.}

Nikolaev, Y.V.; Eryomin, S.A.; Kalmykov, S.S.; Karpechenko, Y.D.; Kucherov, R.Y.; Lapochkin, N.V. [Research Institute of Scientific Industrial Association ``Lutch``, 142100, Podolsk, Moscow Region (Russian Federation)

1996-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "gap amor stadium" 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

Photoluminescence-based measurements of the energy gap and diffusion length of Zn3P2  

E-Print Network [OSTI]

or liquid contacts,5 with p-Zn3P2/Mg Schottky diodes having exhibited 6% solar energy-conversion efficiencyPhotoluminescence-based measurements of the energy gap and diffusion length of Zn3P2 Gregory M ellipsometric measurements. Bulk minority carrier lifetimes of 20 ns were observed by time

Kimball, Gregory

322

Daily Thermal Predictions of the AGR-1 Experiment with Gas Gaps Varying with Time  

SciTech Connect (OSTI)

A new daily as-run thermal analysis was performed at the Idaho National Laboratory on the Advanced Gas Reactor (AGR) test experiment number one at the Advanced Test Reactor (ATR). This thermal analysis incorporates gas gaps changing with time during the irradiation experiment. The purpose of this analysis was to calculate the daily average temperatures of each compact to compare with experimental results. Post irradiation examination (PIE) measurements of the graphite holder and fuel compacts showed the gas gaps varying from the beginning of life. The control temperature gas gap and the fuel compact graphite holder gas gaps were linearly changed from the original fabrication dimensions, to the end of irradiation measurements. A steady-state thermal analysis was performed for each daily calculation. These new thermal predictions more closely match the experimental data taken during the experiment than previous analyses. Results are presented comparing normalized compact average temperatures to normalized log(R/B) Kr-85m. The R/B term is the measured release rate divided by the predicted birth rate for the isotope Kr-85m. Correlations between these two normalized values are presented.

Grant Hawkes; James Sterbentz; John Maki; Binh Pham

2012-06-01T23:59:59.000Z

323

Multiple Equilibria and Hysteresis of Two Unequal-Transport Western Boundary Currents Colliding at a Gap  

Science Journals Connector (OSTI)

The nonlinear collision of two western boundary currents (WBCs) of Munk thickness LM colliding near a gap of width 2a is studied using a 1.5-layer, reduced-gravity, quasigeostrophic ocean model. The work is a continuation of our recent study on ...

Zheng Wang; Dongliang Yuan

2014-07-01T23:59:59.000Z

324

PHYSICAL REVIEW B 85, 115431 (2012) Energy gaps in graphene nanomeshes  

E-Print Network [OSTI]

PHYSICAL REVIEW B 85, 115431 (2012) Energy gaps in graphene nanomeshes William Oswald and Zhigang opening and electronic structures of graphene nanomeshes (GNMs), the defected graphene containing a high, 71.15.Mb I. INTRODUCTION Graphene, a two-dimensional (2D) single-layer honeycomb structure of carbon

Wu, Zhigang

325

Current transport, gate dielectrics and band gap engineering in graphene devices  

E-Print Network [OSTI]

Current transport, gate dielectrics and band gap engineering in graphene devices Wenjuan Zhu In this work, we studied current transport in mono-, bi- and tri-layer graphene. We find that both of the electrical field of the substrate surface polar phonons in bi-layer/tri-layer graphenes. We also find

Perebeinos, Vasili

326

Metallic photonic-band-gap filament architectures for optimized incandescent lighting Sajeev John and Rongzhou Wang  

E-Print Network [OSTI]

Metallic photonic-band-gap filament architectures for optimized incandescent lighting Sajeev John occur 3,4 . Tra- ditionally incandescent lighting filaments, despite being driven from equilibrium the blackbody spectrum. This suggests the pos- sibility of higher efficiency incandescent lighting, through

John, Sajeev

327

Bridging the Gap: Automated Steady Scaffoldings for 3D Printing Jrmie Dumas  

E-Print Network [OSTI]

Bridging the Gap: Automated Steady Scaffoldings for 3D Printing J�r�mie Dumas Universit� de Figure 1: The upper leg of the Poppy robot (www.poppy-project.org) cannot be 3D printed on low cost FDM usage. Abstract Fused Filament Fabrication (FFF) is the process of 3D printing ob- jects from melted

Lévy, Bruno

328

Glass Transition and the Coulomb Gap in Electron Glasses M. Muller and L. B. Ioffe  

E-Print Network [OSTI]

Glass Transition and the Coulomb Gap in Electron Glasses M. Mu¨ller and L. B. Ioffe Department December 2004) We establish the connection between the presence of a glass phase and the appearance correlations in a systematic way, we show that in the case of strong disorder a continuous glass transition

Müller, Markus

329

Applying Single-Layer Shallow-Water Theory to Gap Flows in the Brenner Pass Region  

E-Print Network [OSTI]

. pressure mean deviation of pot. temperature mean wind speed cross-section of topography shallow foehn jump;Doppler wind lidar FOEHN 30 Oct 1999 20 Oct 1999 gap flow ambient flow ridge lidar location LIDAR NOAA InnsbruckBrenner wind speed #12;SWM simulations FOEHN valley exit Ellboegen Tienzens Brenner Steinach/ Gries

Gohm, Alexander

330

Emergence and evolution of learning gaps across countries: Linked panel evidence from Ethiopia, India, Peru and  

E-Print Network [OSTI]

on children in middle or secondary school, raise two important questions. First, at what age do gaps between, prior to school enrolment, with children in Vietnam at the upper end, children in Ethiopia at the lower, and with Peru and India in between. Differences between country samples grow in magnitude at later ages

Bandyopadhyay, Antar

331

Size effect on the electronic and optical band gap of CdSe QD  

SciTech Connect (OSTI)

Present paper deals with a critical and comprehensive analysis of the dependence of photo emission (PE) electronic band gap and optical absorption (OA) excitonic band gap on the size of CdSe QD, via connecting it with excitonic absorbance wavelength. Excitonic absorbance wavelength is determined through an empirical fit of established experimental evidences. Effective excitonic charge and Bohr radius is determined as a function of size. Increase in size of the CdSe QD results in greater Bohr radius and smaller effective excitonic charge. Excitonic binding energy as a degree of size of QD is also calculated which further relates with the difference in PE electronic and OA optical band gaps. It is also shown that with increase in size of CdSe QD, the excitonic binding energy decreases which consequently increases differences in two band gaps. Our results are very well comparable with the established results. Explanation for the origin of the unusual optical properties of CdSe QD has been also discussed.

Sisodia, Namita, E-mail: namitasisodiya@gmail.com [Department of Physics, Holkar Science College, Indore-45200 (India)

2014-04-24T23:59:59.000Z

332

Coupling of nitrogen-vacancy centers in diamond to a GaP waveguide  

E-Print Network [OSTI]

The optical coupling of guided modes in a GaP waveguide to nitrogen-vacancy (NV) centers in diamond is demonstrated. The electric field penetration into diamond and the loss of the guided mode are measured. The results indicate that the GaP-diamond system could be useful for realizing coupled microcavity-NV devices for quantum information processing in diamond.

K. -M. C. Fu; C. Santori; P. E. Barclay; I. Aharonovich; S. Prawer; N. Meyer; A. M. Holm; R. G. Beausoleil

2008-11-03T23:59:59.000Z

333

On the entropy devils staircase in a family of gap-tent maps  

E-Print Network [OSTI]

To analyze the trade-off between channel capacity and noise-resistance in designing dynamical systems to pursue the idea of communications with chaos, we perform a measure theoretic analysis the topological entropy function of a gap-tent map whose invariant set is an unstable chaotic saddle of the tent map. Our model system, the gap-tent map is a family of tent maps with a symmetric gap, which mimics the presence of noise in physical realizations of chaotic systems, and for this model, we can perform many calculations in closed form. We demonstrate that the dependence of the topological entropy on the size of the gap has a structure of the devils staircase. By integrating over a fractal measure, we obtain analytical, piece-wise differentiable approximations of this dependence. Applying concepts of the kneading theory we find the position and the values of the entropy for all leading entropy plateaus. Similar properties hold also for the dependence of the fractal dimension of the invariant set and the escape rate.

Karol Zyczkowski; Erik M. Bollt

1999-01-01T23:59:59.000Z

334

Forward Raman compression via photonic band gap in metals or warm dense matter  

SciTech Connect (OSTI)

The group velocity of a light pulse in photonic band gap material could considerably deviate from the speed of light in vacuum. A forward stoke and a pump pulse of different speeds would enable the Raman compression in metals or the warm dense matter. A small window of the parameter regime, where the compression is feasible via the forward Raman scattering, is identified.

Son, S. [18 Caleb Lane, Princeton, New Jersey 08540 (United States); Moon, Sung Joon [Program in Applied and Computational Mathematics, Princeton University, Princeton, New Jersey 08544 (United States)

2011-08-15T23:59:59.000Z

335

Rapidity Gaps Between Jets in PHP DIS 2006 , April 22, 2006 -1Patrick Ryan, Univ. of Wisconsin Patrick Ryan  

E-Print Network [OSTI]

Rapidity Gaps Between Jets in PHP DIS 2006 , April 22, 2006 - 1Patrick Ryan, Univ. of Wisconsin in PHP DIS 2006 , April 22, 2006 - 2Patrick Ryan, Univ. of Wisconsin Hard Diffractive Photoproduction - = Subject of this analysis #12;Rapidity Gaps Between Jets in PHP DIS 2006 , April 22, 2006 - 3Patrick Ryan

336

The novel Rho-GTPase activating gene MEGAP/ srGAP3 has a putative role in severe mental retardation  

Science Journals Connector (OSTI)

...4 of MEGAP/srGAP3, as shown in the middle part of the scheme. Exons are indicated here as red boxes. Markers D3S2405 and SHGC-57635 (white boxes) are located within intronic sequences of MEGAP/srGAP3. Marker IB772 (white box) resides on the X...

Volker Endris; Birgit Wogatzky; Uwe Leimer; Dusan Bartsch; Malgorzata Zatyka; Farida Latif; Eamonn R. Maher; Gholamali Tariverdian; Stefan Kirsch; Dieter Karch; Gudrun A. Rappold

2002-01-01T23:59:59.000Z

337

Developing Secure Power Systems Professional Competence: Alignment and Gaps in Workforce Development Programs-Summary Report  

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

41 41 Prepared for the U.S. Department of Energy under Contract DE-AC05-76RL01830 Developing Secure Power Systems Professional Competence: Alignment and Gaps in Workforce Development Programs-Summary Report LR O'Neil TJ Vanderhorst, Jr MJ Assante J Januszewski, III DH Tobey R Leo TJ Conway K Perman July 2013 PNNL- 22641 Developing Secure Power Systems Professional Competence: Alignment and Gaps in Workforce Development Programs-Summary Report LR O'Neil TJ Vanderhorst, Jr MJ Assante J Januszewski, III DH Tobey R Leo TJ Conway K Perman Contributors: SGC Panel Members July, 2013 Prepared by: Pacific Northwest National Laboratory and NBISE Secure Power Systems Professional Project Team This document is a summarization of the report, Developing Secure Power Systems

338

Summary of Gaps and Barriers for Implementing Residential Building Energy Efficiency Strategies  

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

Gaps and Gaps and Barriers for Implementing Residential Building Energy Efficiency Strategies 2010 Residential Buildings Energy Efficiency Meeting Denver, Colorado - July 20 - 22, 2010 August 2010 Prepared by the National Renewable Energy Laboratory For the U.S. Department of Energy Building Technologies Program NOTICE 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 responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned

339

Molten Carbonate and Phosphoric Acid Stationary Fuel Cells: Overview and Gap Analysis  

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

9072 9072 September 2010 Molten Carbonate and Phosphoric Acid Stationary Fuel Cells: Overview and Gap Analysis Robert Remick National Renewable Energy Laboratory Douglas Wheeler DJW Technology, LLC National Renewable Energy Laboratory 1617 Cole Boulevard, Golden, Colorado 80401-3393 303-275-3000 * www.nrel.gov NREL is a national laboratory of the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy Operated by the Alliance for Sustainable Energy, LLC Contract No. DE-AC36-08-GO28308 Technical Report NREL/TP-560-49072 September 2010 Molten Carbonate and Phosphoric Acid Stationary Fuel Cells: Overview and Gap Analysis Robert Remick National Renewable Energy Laboratory Douglas Wheeler DJW Technology, LLC Prepared under Task No. H278.7210

340

Singlet-Triplet Energy Gaps for Diradicals from Fractional-Spin Density-Functional Theory  

SciTech Connect (OSTI)

Open-shell singlet diradicals are difficult to model accurately within conventional Kohn?Sham (KS) density-functional theory (DFT). These methods are hampered by spin contamination because the KS determinant wave function is neither a pure spin state nor an eigenfunction of the S2 operator. Here we present a theoretical foray for using single-reference closed-shell ground states to describe diradicals by fractional-spin DFT (FS-DFT). This approach allows direct, self-consistent calculation of electronic properties using the electron density corresponding to the proper spin eigenfunction. The resulting FS-DFT approach is benchmarked against diradical singlet?triplet gaps for atoms and small molecules. We have also applied FS-DFT to the singlet?triplet gaps of hydrocarbon polyacenes.

Ess, Daniel H.; Johnson, E R; Hu, Xiangqian; Yang, W T

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "gap amor stadium" 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

Fano-Hopfield model and photonic band gaps for an arbitrary atomic lattice  

SciTech Connect (OSTI)

We study the light dispersion relation in a periodic ensemble of atoms at fixed positions in the Fano-Hopfield model (the atomic dipole being modeled with harmonic oscillators). Compared to earlier works, we do not restrict to cubic lattices, and we do not regularize the theory by hand but we renormalize it in a systematic way using a Gaussian cutoff in momentum space. Whereas no omnidirectional spectral gap is known for light in a Bravais atomic lattice, we find that, for a wide range of parameters, an omnidirectional gap occurs in a diamond atomic lattice, which may be realized in an experiment with ultracold atoms. The long-wavelength limit of the theory also provides a Lorentz-Lorenz (or Clausius-Mossotti) relation for an arbitrary lattice.

Antezza, Mauro; Castin, Yvan [Laboratoire Kastler Brossel, Ecole Normale Superieure, CNRS and UPMC, 24 rue Lhomond, 75231 Paris (France)

2009-07-15T23:59:59.000Z

342

Fano-Hopfield model and photonic band gaps for an arbitrary atomic lattice  

Science Journals Connector (OSTI)

We study the light dispersion relation in a periodic ensemble of atoms at fixed positions in the Fano-Hopfield model (the atomic dipole being modeled with harmonic oscillators). Compared to earlier works, we do not restrict to cubic lattices, and we do not regularize the theory by hand but we renormalize it in a systematic way using a Gaussian cutoff in momentum space. Whereas no omnidirectional spectral gap is known for light in a Bravais atomic lattice, we find that, for a wide range of parameters, an omnidirectional gap occurs in a diamond atomic lattice, which may be realized in an experiment with ultracold atoms. The long-wavelength limit of the theory also provides a Lorentz-Lorenz (or Clausius-Mossotti) relation for an arbitrary lattice.

Mauro Antezza and Yvan Castin

2009-07-21T23:59:59.000Z

343

Laboratory Studies on Surface Sampling of Bacillus anthracis Contamination: Summary, Gaps, and Recommendations  

SciTech Connect (OSTI)

This report summarizes previous laboratory studies to characterize the performance of methods for collecting, storing/transporting, processing, and analyzing samples from surfaces contaminated by Bacillus anthracis or related surrogates. The focus is on plate culture and count estimates of surface contamination for swab, wipe, and vacuum samples of porous and nonporous surfaces. Summaries of the previous studies and their results were assessed to identify gaps in information needed as inputs to calculate key parameters critical to risk management in biothreat incidents. One key parameter is the number of samples needed to make characterization or clearance decisions with specified statistical confidence. Other key parameters include the ability to calculate, following contamination incidents, the (1) estimates of Bacillus anthracis contamination, as well as the bias and uncertainties in the estimates, and (2) confidence in characterization and clearance decisions for contaminated or decontaminated buildings. Gaps in knowledge and understanding identified during the summary of the studies are discussed and recommendations are given for future studies.

Piepel, Gregory F.; Amidan, Brett G.; Hu, Rebecca

2011-11-28T23:59:59.000Z

344

A large gap of radio frequency dielectric barrier atmospheric pressure glow discharge  

SciTech Connect (OSTI)

A large gap was acquired between electrodes (up to 5.5 mm) of Ar atmospheric pressure glow discharge in radio frequency dielectric barrier discharge (rf-DBD). The discharge of Ar plasma was characterized by I-V curve and Lissajous plot, and the effective power of the discharge was calculated based on the measured Lissajous plot and found to be higher than 90% of the input power. To gain a thorough understanding of the mechanism, the rf-DBD with a single dielectric barrier layer operating in gamma mode glow discharge of N{sub 2} plasma was diagnosed in spatial resolution through optical emission spectroscopy. It was concluded that secondary electron emission might be responsible for the sustainable glow discharge in the large gap rf-DBD plasma.

Li, B.; Chen, Q.; Liu, Z. W. [Laboratory of Plasma Physics and Materials, Beijing Institute of Graphic Communication, Beijing 102600 (China)

2010-01-25T23:59:59.000Z

345

Fullerene Formation in Carbon Arc:? Electrode Gap Dependence and Plasma Spectroscopy  

Science Journals Connector (OSTI)

The arc discharge technique is presently considered the most efficient method for the production of fullerene. ... The experiments were carried out in a fullerene arc reactor operating in a semi-continuous fashion, described previously in detail by Huczko et al.20 On the basis of earlier work,20-22 the parameters, ac or dc feeding mode, input power, buffer gas, and pressure, were optimized and electrode gaps between 0.5 and 4 mm were used for dc arcing. ... The interelectrode gap strongly influences the electric properties of the arc and characteristics of generated carbon plasma as well as the radiation level and heat exchange between the plasma and the surrounding high-temperature zone. ...

Andrzej Huczko; Hubert Lange; Przemyslaw Byszewski; Magdalena Poplawska; Andrzej Starski

1997-02-13T23:59:59.000Z

346

Gap states in Pentacene Thin Film Induced by Inert Gas Exposure  

Science Journals Connector (OSTI)

We studied gas-exposure effects on pentacene (Pn) films on SiO2 and Au(111) substrates by ultrahigh sensitivity photoelectron spectroscopy, which can detect the density of states of ?1016 states eV-1?cm-3 comparable to electrical measurements. The results show the striking effects for Pn/SiO2: exposure to inert gas (N2 and Ar) produces a sharp rise in gap states from ?1016 to ?1018 states eV-1?cm-3 and pushes the Fermi level closer to the valence band (0.150.17eV), as does exposure to O2 (0.20eV), while no such gas-exposure effect is observed for Pn/Au(111). The results demonstrate that these gap states originate from small imperfections in the Pn packing structure, which are induced by gas penetration into the film through the crystal grain boundaries.

Fabio Bussolotti; Satoshi Kera; Kazuhiro Kudo; Antoine Kahn; Nobuo Ueno

2013-06-25T23:59:59.000Z

347

The Effect of an Annular Celotex(r) Gap on the 9975 Package  

SciTech Connect (OSTI)

Following a drop test at the Westinghouse Savannah River Company (WSRC), radiographs of a 9975 drum package showed that separations, normal to the axial direction, had formed in the Celotex(R). Because the Celotex(R) acts as a thermal insulator, concerns arose as to the effect gaps in the material would have on the packaging components during and after a hypothetical fire transient. The effect of Celotex(R) gaps on the content temperature was estimated using a thermal model developed with the MSC/THERMAL(R) heat transfer software. The model included the effects of internal heat conduction and thermal radiation. Convection and thermal radiation boundary conditions were applied to the model. The thermal analysis supported the expectation that small separations in the fiberboard insulation will not degrade the thermal performance of the 9975 package in a Hypothetical Accident Conditions (HAC) fire.

Hardy, B.J.

2001-02-20T23:59:59.000Z

348

Inorganic Graphenylene: A Porous Two-Dimensional Material With Tunable Band Gap  

E-Print Network [OSTI]

By means of ab initio calculations we investigate the possibility of existence of a boron nitride (BN) porous two-dimensional nanosheet which is geometrically similar to the carbon allotrope known as biphenylene carbon. The proposed structure, which we called Inorganic Graphenylene (IGP), is formed spontaneously after selective dehydrogenation of the porous Boron Nitride (BN) structure proposed by Ding et al. We study the structural and electronic properties of both porous BN and IGP and it is shown that, by selective substitution of B and N atoms with carbon atoms in these structures, the band gap can be significantly reduced, changing their behavior from insulators to semiconductors, thus opening the possibility of band gap engineering for this class of two-dimensional materials.

Perim, Eric; Atreto, Pedro Alves da Silva; Galvo, Douglas

2014-01-01T23:59:59.000Z

349

Closing Data Gaps for LCA of Food Products: Estimating the Energy Demand of Food Processing  

Science Journals Connector (OSTI)

Closing Data Gaps for LCA of Food Products: Estimating the Energy Demand of Food Processing ... To quantify the environmental impacts arising from food production, environmental assessment tools such as life cycle assessment (LCA) should be applied. ... Most of the published LCAs on food are assessing primary agricultural products, e.g., refs 4 and 5, whereas the number of studies available on processed food is lower, e.g., refs 6?8. ...

Neus Sanjun; Franziska Stoessel; Stefanie Hellweg

2013-12-17T23:59:59.000Z

350

Growth and characterization of liquid phase epitaxial GaP layers  

E-Print Network [OSTI]

Inside a High-vacuum Chamber . . . . . . . . . . . . . . . . . . . . . . . 3 3. Cross Section of Multi-well Sliding Graphite Boat. Solubility Curve of P in Ga Melt 5. Apparatus of LPE Growth by Tipping Method. 10 Dipping System Schematic for LPE... Growth. 10 7. Sliding Boat System Block Diagram for LPE Growth 12 Temperature Profile Along the Graphite Boat. 13 9. Disassembled Graphite Boat for Multi-layer LPE Growth. . . 14 10. Ga-P Phase Diagram 17 Solution Cooling Procedure for Three...

Kao, Yung-Chung

2012-06-07T23:59:59.000Z

351

Do Food Availability and Microclimate Determine Bird Use of Forest Canopy Gaps?  

SciTech Connect (OSTI)

We investigated the influence of arthropod availability and microclimate on avian use of forest canopy gaps in 2002 and 2003. We used mist netting and observation of foraging effort (attack rates) to determine the influence of arthropod abundance on avian habitat use of three sizes (0.13, 0.26, and 0.50 ha) of 2- to 3-year-old group-selection timber harvest openings during four periods (spring migration, breeding, post-breeding, and fall migration).

CHAMPLIN, TRACEY BERNICE

2007-07-01T23:59:59.000Z

352

The Influence of Caregiver-Child Acculturation Gap on Mexican American Adolescents' Depression and Suicidality  

E-Print Network [OSTI]

and the passion you had for counseling. Thank you for being part of this journey! Mom, dad, Amber and A.J.thank you for your love and support in each step of my life, including graduate school and my dissertation. You have always believed in me... teens. However, compared with Latinas, Latino boys are more likely to be successful in their attempts (Wagner, 2009). The purpose of the present manuscript is to present the acculturation gap hypothesis (Birman, 2006) within the cultural...

Pia-Watson, Brandy Michelle

2014-05-27T23:59:59.000Z

353

The Green's function of a finite-gap Schrdinger operator discretization on a quad graph  

E-Print Network [OSTI]

We are using the finite-gap approach for the construction of the Schr\\"{o}dinger operator discretization on a quad graph. The latter is represented by a two-dimensional integer sublattice in a $d$-dimensional space. The Green's function of the operator can be posed explicitly as an integral of the differential built by the spectral data, calculated on contours of the special form. We also know the the asymptotics of the achieved function.

Vasilevskiy Boris

2014-02-09T23:59:59.000Z

354

Costs for Rescheduling Actions: A Critical Issue for Reducing the Gap between Scheduling Theory and Practice  

Science Journals Connector (OSTI)

Costs for Rescheduling Actions: A Critical Issue for Reducing the Gap between Scheduling Theory and Practice ... To adjust the rescheduling process to the needs of the decision-maker, rescheduling costs are included to the initial objective function. ... Moreover, these authors assumed that the smooth operation of the plant is only affected by binary decisions, such as unit reallocation, without examining the influence of a continuous penalty term or metric. ...

Georgios M. Kopanos; Elisabet Capn-Garca; Antonio Espua; Luis Puigjaner

2008-10-21T23:59:59.000Z

355

Local droplet etching Nanoholes, quantum dots, and air-gap heterostructures  

SciTech Connect (OSTI)

Local droplet etching (LDE) allows the self-organized generation of nanoholes in semiconductor surfaces and is fully compatible with molecular beam epitaxy (MBE). The influence of the process parameters as well as of droplet and substrate materials on the LDE nanohole morphology is discussed. Furthermore, recent applications of LDE, the fabrication of quantum dots by hole filling and the creation of air-gap heterostructures are addressed.

Heyn, Ch.; Sonnenberg, D.; Graf, A.; Kerbst, J.; Stemmann, A.; Hansen, W. [Institute of Applied Physics, University of Hamburg, Jungiusstr. 11, 20355 Hamburg (Germany)

2014-05-15T23:59:59.000Z

356

Studies of electrical breakdown processes across vacuum gaps between metallic electrodes  

Science Journals Connector (OSTI)

Abstract An experimental program to elucidate the physical causes of electrical breakdown across vacuum gaps, such as those that occur in charged particle accelerators, is discussed. Magnetic insulation is explored as a technique to differentiate between field emission of electrons and clump acceleration as possible causative mechanisms for the onset of breakdown. The results and limitations of an exploratory experiment are described, along with plans for a more comprehensive experimental and theoretical campaign.

L.R. Grisham; A. Von Halle; A.F. Carpe; Guy Rossi; K.R. Gilton; E.D. McBride; E.P. Gilson; A. Stepanov; T.N. Stevenson

2014-01-01T23:59:59.000Z

357

Microsoft Word - EM_CM_3_Risk_Management_Best Practices and Gaps.doc  

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

CONTRACT AND PROJECT MANAGEMENT CONTRACT AND PROJECT MANAGEMENT ROOT CAUSE ANALYSIS CORRECTIVE ACTION PLAN CORRECTIVE MEASURE 3 IDENTIFICATION OF BEST RISK MANAGEMENT PRACTICES AND ANALYSIS OF DOE RISK MANAGEMENT PLANS SUMMARY REPORT JULY 2009 ii iii Contents 1.0 Introduction......................................................................................................................... 1 2.0 Discussion of Approach...................................................................................................... 2 3.0 Summary of Gaps and Planned Next Steps ........................................................................ 7 Attachment 1- List of Risk Management Plans Reviewed ........................................................ 12 Attachment 2-Risk Management Best Practices

358

Forestry and Poverty Data in Vietnam: Status, Gaps, and Potential Uses |  

Open Energy Info (EERE)

Forestry and Poverty Data in Vietnam: Status, Gaps, and Potential Uses Forestry and Poverty Data in Vietnam: Status, Gaps, and Potential Uses Jump to: navigation, search Tool Summary Name: Forestry and Poverty Data in Vietnam: Status, Gaps, and Potential Uses Agency/Company /Organization: Regional Community Forestry Training Center for Asia and the Pacific Sector: Land Focus Area: Forestry Topics: Co-benefits assessment, Background analysis Resource Type: Dataset, Publications Website: recoftc.org/site/fileadmin/docs/publications/The_Grey_Zone/2009/Forest Country: Vietnam UN Region: South-Eastern Asia Coordinates: 14.058324°, 108.277199° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":14.058324,"lon":108.277199,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

359

THE CASE OF AB AURIGAE'S DISK IN POLARIZED LIGHT: IS THERE TRULY A GAP?  

SciTech Connect (OSTI)

Using the Near-Infrared Camera and Multi-Object Spectrometer (NICMOS) coronagraph, we have obtained high-contrast 2.0 mum imaging polarimetry and 1.1 mum imaging of the circumstellar disk around AB Aurigae on angular scales of 0.''3-3'' (40-550 AU). Unlike previous observations, these data resolve the disk in both total and polarized intensity, allowing accurate measurement of the spatial variation of polarization fraction across the disk. Using these observations, we investigate the apparent 'gap' in the disk reported by Oppenheimer et al.. In polarized intensity, the NICMOS data closely reproduce the morphology seen by Oppenheimer et al., yet in total intensity we find no evidence for a gap in either our 1.1 or 2.0 mum images. We find instead that region has lower polarization fraction, without a significant decrease in total scattered light, consistent with expectations for backscattered light on the far side of an inclined disk. Radiative transfer models demonstrate this explanation fits the observations. Geometrical scattering effects are entirely sufficient to explain the observed morphology without any need to invoke a gap or a protoplanet at that location.

Perrin, Marshall D. [Division of Astronomy, University of California, Los Angeles, CA 90095 (United States); Schneider, Glenn [Steward Observatory, The University of Arizona, 933 North Cherry Avenue, Tucson, AZ 85721 (United States); Duchene, Gaspard [University of California, Berkeley, Berkeley, CA 94720 (United States); Pinte, Christophe [Universite Joseph Fourier-Grenoble 1/CNRS, Laboratoire d'Astrophysique de Grenoble (LAOG) UMR 5571, BP 53, 38041 Grenoble, Cedex 09 (France); Grady, Carol A. [Eureka Scientific, 2452 Delmer, Suite 100, Oakland, CA 96002 (United States); Wisniewski, John P. [Department of Astronomy, University of Washington Seattle, WA 98195-1580 (United States); Hines, Dean C., E-mail: mperrin@ucla.ed [Space Science Institute, 4750 Walnut Street, Suite 205, Boulder, CO 80301 (United States)

2009-12-20T23:59:59.000Z

360

Spectra and gap amplification for systems with two widely different incommensurate periodicities  

SciTech Connect (OSTI)

We derive analytically the spectrum for the Schroedinger equation for quasiperiodic systems with two length scales: one large ''macroscopic'' scale (e.g., a-italic cos(2..pi..x-italic/lambda)) and one small ''microscopic'' scale (e.g., v-italic cos(2..pi..x-italic)). The phase diagram includes regimes with exponentially narrow gaps due to the slowly varying potential, regimes where the rapidly varying potential amplifies these narrow gaps, and regimes with exponentially narrow ''Landau bands.'' The full ''devil's-staircase'' spectrum with gaps at wave vectors q-italic = m-italic..pi..+n-italic..pi../lambda develops in a hierarchical manner as a-italic increases. The results apply to systems with superlattices, to celestial orbits with two periodic perturbations, to systems with slowly varying lattice distortions, and, in particular, to quasi-one-dimensional magnets such as bis(tetramethyltetraselenafulvalene) perchlorate ((TMTSF)/sub 2/ClO/sub 4/) in magnetic fields, where our findings may provide insight into the experimentally observed cascade of phase transitions.

Azbel, M.Y.; Bak, P.; Chaikin, P.M.

1986-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "gap amor stadium" from the National Library of EnergyBeta (NLEBeta).
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361

ECOR VAP Flux Corrections, Gap-filling, and Results David R. Cook, Meredith Franklin, Donna J. Holdridge  

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

ECOR VAP Flux Corrections, Gap-filling, and Results ECOR VAP Flux Corrections, Gap-filling, and Results David R. Cook, Meredith Franklin, Donna J. Holdridge Argonne National Laboratory, Argonne, IL This work was supported by the U.S. Department of Energy, Office of Science, Office of Biological and Environmental Research, Climate Change Research Division, under contract DE-AC02-06CH11357, as part of the Atmospheric Radiation Measurement Program. Argonne National Laboratory is managed by UChicago Argonne, LLC for the U.S. Department of Energy ABSTRACT An eddy correlation (ECOR) value-added product (VAP) has been developed that uses ECOR temperature, humidity, and wetness state (or default values of the same) to determine corrections to and gap-filling of the flux measurements. An outlier routine is used to remove obvious incorrect data before gap-filling is performed.

362

Granby Pumping Plant Switchyard - Windy Gap Substation Transmission Line Rebuild, Grand County, Colorado: Final Environmental Impact Statement Executive Summary  

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

PUMPING PLANT SWITCHYARD - WINDY GAP PUMPING PLANT SWITCHYARD - WINDY GAP SUBSTATION TRANSMISSION LINE REBUILD, GRAND COUNTY, COLORADO DOE/EIS-0400 Final Environmental Impact Statement Executive Summary Grand County, Colorado June 2013 Granby Pumping Plant-Windy Gap Substation Transmission Line Rebuild Project FEIS Executive Summary ES-1 EXECUTIVE SUMMARY Introduction Western Area Power Administration (Western), a power marketing administration within the U.S. Department of Energy (DOE), is proposing to rebuild and upgrade the Granby Pumping Plant Switchyard-Windy Gap Substation transmission line in Grand County, Colorado (Grand County). This Environmental Impact Statement (EIS) analyzes the impacts associated with the proposal to remove approximately 13.6 miles of 69-kilovolt (kV) transmission line, construct approximately

363

Coulomb gap in 4f systems: One-body treatment. Application to 4f13 and 4f1 configurations  

Science Journals Connector (OSTI)

A potential depending on the f count is deduced from the Coulomb correlation energy. This is applied to two cases in order to describe the Coulomb gap effects within the 4f systems.

F. Lpez-Aguilar and J. Costa-Quintana

1984-05-15T23:59:59.000Z

364

Twenty Eighth International Conference on Information Systems, Montreal 2007 1 BRIDGING THE GAP BETWEEN BUSINESS STRATEGY AND  

E-Print Network [OSTI]

® Registered trademark application pending, Fraunhofer USA and Fraunhofer IESE. #12;Information SystemsTwenty Eighth International Conference on Information Systems, Montreal 2007 1 BRIDGING THE GAP BETWEEN BUSINESS STRATEGY AND SOFTWARE DEVELOPMENT Information Systems Strategy and Governance Victor

Seaman, Carolyn

365

Twenty Eighth International Conference on Information Systems, Montreal 2007 1 BRIDGING THE GAP BETWEEN BUSINESS STRATEGY AND  

E-Print Network [OSTI]

® ® Registered trademark application pending, Fraunhofer USA and Fraunhofer IESE. #12;Information SystemsTwenty Eighth International Conference on Information Systems, Montreal 2007 1 BRIDGING THE GAP BETWEEN BUSINESS STRATEGY AND SOFTWARE DEVELOPMENT Information Systems Strategy and Governance Victor

Basili, Victor R.

366

Influence of anode area and electrode gap on the morphology of TiO2 nanotubes arrays  

Science Journals Connector (OSTI)

In order to fabricate the titanium dioxide (TiO2) nanotubes arrays which were used in the photocatalytic degradation of total volatile organic compounds (TVOC) by anodization, the influence of the electrode gap and anode area on the morphology ...

Min Wang; Li Jia; Shuangmei Deng

2013-01-01T23:59:59.000Z

367

Characterization of Trivalent Graphs with Minimal Eigenvalue Gap* Clemens Brand,a Barry Guiduli,b,** and Wilfried Imrichc,***  

E-Print Network [OSTI]

Characterization of Trivalent Graphs with Minimal Eigenvalue Gap* Clemens Brand,a Barry Guiduli is the mirror image of one of these blocks. Each interior block is of the type: or (2) We will refer

Babai, László

368

Analysis of cladding deformation over plenum axial gaps in Zircaloy-clad fuel rods. LWBR Development Program  

SciTech Connect (OSTI)

An analytical model has been developed to predict deformation of unirradiated Zircaloy cladding over axial gaps in plenum regions of fuel rods. This model uses the ACCEPT finite element computer program to calculate the elastic-plastic deformation of cladding due to net external pressure. Progressive increase in gap length (from elongation of cladding below the gap due to Zircaloy growth and pellet-cladding interaction induced creep and from fuel stack shrinkage due to densification of fuel pellets) and deformations of fuel pellets and support sleeve which bound the axial gap in LWBR type blanket fuel rods are included in the model. The thermal creep representation used is based on data from uniaxial creep testing of fuel rod tubing.

Gorscak, D.A.; Pfennigwerth, P.L.

1982-12-01T23:59:59.000Z

369

Electron Beam Source Molecular Beam Epitaxy of AlxGal?xAs Graded Band Gap Device Structures  

Science Journals Connector (OSTI)

A new method has been developed for the growth of graded band-gap AlxGal?xAs alloys by molecular beam epitaxy which is based upon electron. beam evaporation of the Group III elements ... . The large dynamic respo...

R. J. Malik; A. F. J. Levi; B. F. Levine

1989-01-01T23:59:59.000Z

370

Plasma deposition of wide gap, highly photoconductive a-Si:H thin films from disilane-helium mixtures  

SciTech Connect (OSTI)

Wide gap (>1.9 eV), photoconductive, intrinsic amorphous silicon films were made in a uhv system from Si/sub 2/H/sub 6/-He mixtures. The hydrogen concentrations, optical gaps and photoconductivities were measured. Unlike films made from SiH/sub 4/, Si/sub 2/H/sub 6/-produced films exhibit excellent electronic properties even at low deposition temperatures. The ratio of AM1 photoconductivity to dark conductivity was as high as 10/sup 7/.

Rajeswaran, G.; Vanier, P.E.; Corderman, R.R.; Kampas, F.J.

1984-01-01T23:59:59.000Z

371

Electronic properties of the Ga vacancy in GaP(110) surfaces determined by scanning tunneling microscopy  

Science Journals Connector (OSTI)

The electronic properties of uncharged Ga monovacancies in GaP(110) surfaces are determined from voltage-dependent scanning tunneling microscopy images. The signatures of localized defect states in the band gap are analyzed and their spatial location is determined. Empty and occupied defect states exist. Depressed dangling bonds in the occupied-state images indicate an inward relaxation of the neighboring P atoms. The results agree with recent theoretical work.

Ph. Ebert and K. Urban

1998-07-15T23:59:59.000Z

372

Thermal conductivity of the electrode gap of a thermionic converter, filled with inert gases, at low pressures  

SciTech Connect (OSTI)

Experimental data is presented on the thermal conductivity of the electrode gap of a thermionic converter filled with He, Ar, and Xe in the pressure range 40--550 Pa. The need to account for the coefficients of thermal accommodation of the emitter-inert-gas-collector system in this range is shown. The accommodation coefficients for different temperature regimes are measured and expressions are obtained to calculate the heat flux transported by the inert gases in the electrode gap.

Modin, V.A.; Nikolaev, Y.V.

1985-11-01T23:59:59.000Z

373

Multi junction solar cells using band-gap induced cascaded light absorption  

Science Journals Connector (OSTI)

We propose multi junction solar cells using an optical reflection system formed by arranging plural solar cells in decreasing order of their band gaps for achieving cascaded light absorption by their own band gaps: the first solar cell absorbs some light with a photon energy higher than the highest band gap and reflects the residual light with a lower photon energy to the second solar cell. We further propose to use plural batteries for charging electrical power generated by the individual solar cells to overcome the current matching problem in the multi-junction solar cells. We experimentally demonstrated reflection-type multi junction solar cells using commercially available hydrogenated amorphous silicon (a-Si:H) and crystalline silicon (c-Si) solar cells using air mass 1.5 light illumination. A high open circuit voltage of 24.3 V was achieved, which was a sum of 19.3 and 5.0 V for the individual a-Si:H and c-Si solar cells. However, since there was no current matching between the a-Si:H and c-Si solar cells, the a-Si:H?c-Si serially connected solar cell gave a maximum power of 0.057 W, which was lower than 0.063 W, the sum of those for the individual a-Si:H and c-Si solar cells. The method of charging electrical power from individual solar cells is useful to efficiently achieve electrical power from individual a-Si:H and c-Si solar cells in the absence of current matching in multi junction solar cells.

Toshiyuki Sameshima; Hitomi Nomura; Shinya Yoshidomi; Masahiko Hasumi

2014-01-01T23:59:59.000Z

374

Magnons and a two-component spin gap in FeV2O4  

SciTech Connect (OSTI)

The spinel vanadates have become a model family for exploring orbital order on the frustrated pyrochlore lattice, and recent debate has focused on the symmetry of local crystal fields at the cation sites. Here, we present neutron scattering measurements of the magnetic excitation spectrum in FeV2O4, a recent example of a ferrimagnetic spinel vanadate which is available in single-crystal form.We report the existence of two emergent magnon modes at low temperatures, which draw strong parallels with the closely related material, MnV2O4. We were able to reproduce the essential elements of both the magnetic ordering pattern and the dispersion of the inelastic modes with semiclassical spin-wave calculations, using a minimal model that implies a sizable single-ion anisotropy on the vanadium sublattice. Taking into account the direction of ordered spins, we associate this anisotropy with the large trigonal distortion of VO6 octahedra, previously observed via neutron powder diffractionmeasurements. We further report on the spin gap, which is an order of magnitude larger than that observed in MnV2O4. By looking at the overall temperature dependence, we were able to show that the gap magnitude is largely associated with the ferro-orbital order known to exist on the iron sublattice, but the contribution to the gap from the vanadium sublattice is in fact comparable to what is reported in the Mn compound. This reinforces the conclusion that the spin canting transition is associated with the ordering of vanadium orbitals in this system, and closer analysis indicates closely related physics underlying orbital transitions in FeV2O4 and MnV2O4.

MacDougall, Prof. Gregory J. [University of Illinois, Urbana-Champaign; Brodsky, Mr. Isaac [University of Illinois, Urbana-Champaign; Aczel, Adam A [ORNL; Garlea, Vasile O [ORNL; Granroth, Garrett E [ORNL; Christianson, Andrew D [ORNL; Hong, Tao [ORNL; Zhou, Prof. Haidong [University of Tennessee, Knoxville (UTK); Nagler, Stephen E [ORNL

2014-01-01T23:59:59.000Z

375

Code Gaps and Future Research Needs of Combustion Safety: Building America Expert Meeting Update  

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

Technical Update Meeting April 2013 Technical Update Meeting April 2013 www.buildingamerica.gov Buildings Technologies Program Code Gaps and Future Research Needs for Combustion Safety 2012 Expert Meeting Larry Brand Gas Technology Institute April 29-30, 2013 Building America Technical Update Meeting Denver, Colorado installation, inspection and testing 2. Appliance Installation: clearances to combustible materials, combustion air, and testing 3. Appliance venting: allowed materials, vent type selection, sizing, installation, and testing Fundamental Combustion Safety Related Coverage: 2 | Building America Technical Update Meeting April 2013 www.buildingamerica.gov 1. Gas piping: allowed materials, sizing, Code Coverage Three Key Provisions For Combustion Safety in the Codes 1. Combustion air

376

Radial-Gap Permanent Magnet Motor and Drive Research FY 2004  

SciTech Connect (OSTI)

The objective of this task was to study permanent magnet (PM) radial-gap traction drive systems that could meet the U.S. Department of Energy FreedomCAR Program's 2010 goals to expose weaknesses or identify strengths. Initially, the approach was to compare attributes such as physical deformations during operation, performance (torque, power, efficiency versus speed), material requirements (strength), material costs, manufacturability, weight, power density, specific power, reliability, and drivability for specific motors. Three motors selected were the commercially available 60-kW radial-gap surface-mounted PM motor manufactured by UQM Technologies, Inc.; a hypothetical PM motor with rotor-supported magnets similar to the Honda MCF-21; and Delphi's automotive electric machine drive motor, whose rotor is a ferromagnetic cylinder, held at one end by a shaft that supports the magnets on its inner surface. Potential problems have appeared related to PM motors, such as (1) high no-load spin losses and high operational power losses, probably from eddy current losses in the rotor; (2) the undemonstrated dual mode inverter control (DMIC) for driving a brushless dc motor (BDCM) (UQM and Delphi motors); (3) uncertainty about the potential for reducing current with DMIC; and (4) uncertainty about the relation between material requirements and maximum rotor speed. Therefore, the approach was changed to study in detail three of the comparison attributes: drivability, performance, and material requirements. Drivability and related problems were examined by demonstrating that DMIC may be used to drive an 18-pole 30-kW PM motor to 6000 rpm, where the maximum electrical frequency is 900 Hz. An available axial-gap test motor with 18 poles was used because its control is identical to that of a radial gap PM motor. Performance was analytically examined, which led to a derivation showing that DMIC controls a PM motor so that the motor uses minimum current to produce any power regardless of speed for relative speeds, n = {omega}/{omega}{sub base} {ge} 2. Performance was also examined with efficiency measurements during the 30-kW PM motor test. Material requirements were examined with finite-element analyses (FEA) to determine the speed and location where yield starts and the corresponding deformations and stresses.

McKeever, J.W.

2005-02-11T23:59:59.000Z

377

Wave equations for determining energy-level gaps of quantum systems  

E-Print Network [OSTI]

An differential equation for wave functions is proposed, which is equivalent to Schr\\"{o}dinger's wave equation and can be used to determine energy-level gaps of quantum systems. Contrary to Schr\\"{o}dinger's wave equation, this equation is on `bipartite' wave functions. It is shown that those `bipartite' wave functions satisfy all the basic properties of Schr\\"{o}dinger's wave functions. Further, it is argued that `bipartite' wave functions can present a mathematical expression of wave-particle duality. This provides an alternative approach to the mathematical formalism of quantum mechanics.

Zeqian Chen

2006-09-10T23:59:59.000Z

378

Transition temperature and a spatial dependence of the superconducting gap for multilayer high-temperature superconductors  

Science Journals Connector (OSTI)

We derive the expressions for the transition temperature Tc, and the spatial dependence of the superconducting gap for a multilayer high-Tc superconductor composed of groups of tightly spaced planes separated by a larger distance. The results are compared with experiment and provide strong support for an interlayer hopping as the driving force of the large Tc enhancement in multilayered compounds. Our results are universal in the sense that they are valid for an arbitrary pairing potential Vkk? in the CuO2 planes, as well as for both Fermi- and non-Fermi-liquids.

Krzysztof Byczuk and Jozef Spa?ek

1996-01-01T23:59:59.000Z

379

Dipolon theory of energy gap parameters in high-temperature superconductors at zero temperature  

Science Journals Connector (OSTI)

Many-body field-theoretic techniques involving dipolon propagator and electron Greens function have been used to derive the general expressions at zero temperature for the renormalized energy gap parameter ?(k?,?), the gap renormalization parameter Z(k?,?), and energy band renormalization parameter ?(k?,?) for momentum k? and frequency ?. The present theory takes into account explicitly the dressed dipolons as mediators of superconductivity, the screened Coulomb repulsion, and nonrigid electron energy bands considering retardation and damping effects and electron-hole asymmetry. For superconducting cuprates it has been shown by symmetry considerations that, in the lowest order approximations, there exists two energy gap parameters, one being antisymmetric (as) with respect to the exchange of the kx and ky components of vector k? and the other being symmetric (s) with respect to the exchange of kx and ky. The antisymmetric solution is a dx2-y2 wave (i.e., ? [cos(kx)-cos(ky)]) which changes sign with respect to the exchange of kx and ky, and the symmetric solution which is highly asymmetric s wave or equivalently, a combination of a symmetric s wave and absolute value of dx2-y2 wave (i.e. ? | [cos(kx)-cos(ky)] | ) which does not change sign with respect to the exchange of kx and ky. Our self-consistent calculations of the real and imaginary parts of ?(k?,?), Z(k?,?), and ?(k?,?) verify the existence of these two (different) solutions and lead to the conclusion that the antisymmetric solution of the gap parameter corresponds to the observed regular (reg) superconducting energy gap whereas the symmetric solution corresponds to the observed pseudo (pse) energy gap. Calculations have been made for Bi2Sr2CaCu2O8+? as well as Bi2Sr2CaCu2O8. Explicitly, for Bi2Sr2CaCu2O8+? superconductor our calculated values of the antisymmetric and symmetric energy gap parameters are ?0as=2215?meV and ?1s=3010?meV with ?0s=1.51.5?meV, where ?as(k?)=?0as [cos(kx)-cos(ky)] and ?s(k?)=?0s+?1s| [cos(kx)-cos(ky)] |, in agreement with the corresponding experimental results ?0reg=16.51.5?meV, ?1pse?24?meV, and ?0pse=-0.52.5?meV. For Bi2Sr2CaCu2O8 superconductor our calculated values of the antisymmetric and the symmetric energy gap parameters are ?0as=2413?meV and ?1s=2915?meV with ?0s?0 which also agree with the corresponding experimental results ?0reg=16.51.5?meV and ?1pse=30-40?meV with ?0pse=-0.52.5?meV. Our calculations also indicate that the bosonic energy relevant to superconductivity in Bi2Sr2CaCu2O8+? superconductor is about 60 meV arising from O1,2 dipolon excitations and that the broad bands observed in optical experiments are due to O1,1, O1,2, and O3 dipolon excitations. Relative contributions from the various dipolon modes have been analyzed. One finds that the symmetric longitudinal modes of oxygen dipolons contribute dominantly in energy gap parameters. The uncertainties in the calculated values of the various parameters are due to uncertainties in the values of the polarizability particularly of oxygen ions, the shielding parameter, the repulsive Coulomb energy, and due to the calculational errors. The origin of the experimentally deduced T* values has been discussed in terms of the present theory which reveals that T* is greater than Tc and that they have the same physical origin.

R. R. Sharma

2001-01-03T23:59:59.000Z

380

Photonic band gaps in three-dimensional network structures with short-range order  

SciTech Connect (OSTI)

We present a systematic study of photonic band gaps (PBGs) in three-dimensional (3D) photonic amorphous structures (PASs) with short-range order. From calculations of the density of optical states (DOS) for PASs with different topologies, we find that tetrahedrally connected dielectric networks produce the largest isotropic PBGs. Local uniformity and tetrahedral order are essential to the formation of PBGs in PASs, in addition to short-range geometric order. This work demonstrates that it is possible to create broad, isotropic PBGs for vector light fields in 3D PASs without long-range order.

Liew, Seng Fatt; Noh, Heeso [Department of Applied Physics, Yale University, New Haven, Connecticut 06511 (United States); Yang, Jin-Kyu [Department of Applied Physics, Yale University, New Haven, Connecticut 06511 (United States); Department of Optical Engineering, Kongju National University, Kongju 314-701 (Korea, Republic of); Schreck, Carl F. [Department of Physics, Yale University, New Haven, Connecticut 06511 (United States); Dufresne, Eric R. [Department of Physics, Yale University, New Haven, Connecticut 06511 (United States); Department of Mechanical Engineering and Materials Science, Yale University, New Haven, Connecticut 06511 (United States); Department of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06511 (United States); Department of Cell Biology, Yale University, New Haven, Connecticut 06511 (United States); O'Hern, Corey S. [Department of Physics, Yale University, New Haven, Connecticut 06511 (United States); Department of Mechanical Engineering and Materials Science, Yale University, New Haven, Connecticut 06511 (United States); Cao, Hui [Department of Applied Physics, Yale University, New Haven, Connecticut 06511 (United States); Department of Physics, Yale University, New Haven, Connecticut 06511 (United States)

2011-12-15T23:59:59.000Z

Note: This page contains sample records for the topic "gap amor stadium" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
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381

Methodology for Defining Gap Areas between Course-over-ground Locations  

SciTech Connect (OSTI)

Finding all areas that lie outside some distance d from a polyline is a problem with many potential applications. This application of the Visual Sample Plan (VSP) software required finding all areas that were more than distance d from a set of existing paths (roads and trails) represented by polylines. An outer container polygon (known in VSP as a sample area) defines the extents of the area of interest. The term gap area was adopted for this project, but another useful term might be negative coverage area. The project required a polygon solution rather than a raster solution. The search for a general solution provided no results, so this methodology was developed

Wilson, John E.

2013-09-30T23:59:59.000Z

382

Photovoltages Larger than the Band Gap in Thin Films of Germanium  

Science Journals Connector (OSTI)

Photovoltages much larger than the band gap were investigated in thin films of germanium deposited obliquely onto Pyrex substrates. The voltages were studied as functions of angle of deposit film thickness intensity of illumination temperature and ambient atmosphere. A model is presented which explains the following observations. Positive and negative photovoltages exist simultaneously in a single sample; which of these predominates changes with time. Dark resistance and photovoltage exhibit the same temperature dependence with identical activation energies indicating that both dark resistance and photovoltage arise from the same elementary processes.

H. Kallmann; G. Marmor Spruch; S. Trester

1972-01-01T23:59:59.000Z

383

Is it effective to harvest visible light by decreasing the band gap of photocatalytic materials?  

SciTech Connect (OSTI)

In situ variations in the electron work function and photo-current of TiO{sub 2} nanotubes demonstrate that long-wavelength illumination only has a minor effect on the excitation of electrons in the nanotubes after being exposed to short-wavelength light or when the short-wavelength light coexisted, indicating that the solar spectrum may not be utilized as efficiently as expected by extending the absorption spectrum of the photocatalytic material to visible light range with decreased band gaps.

Fu Ning; Tang Xinhu; Li Dongyang [Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta T6G 2G6 (Canada)

2012-02-27T23:59:59.000Z

384

Direct space-time observation of pulse tunneling in an electromagnetic band gap  

SciTech Connect (OSTI)

We present space-time-resolved measurements of electromagnetic pulses tunneling through a coaxial electromagnetic band gap structure. The results show that during the tunneling process the field distribution inside the barrier is an exponentially decaying standing wave whose amplitude increases and decreases as it slowly follows the temporal evolution of the input pulse. At no time is a pulse maximum found inside the barrier, and hence the transmitted peak is not the incident peak that has propagated to the exit. The results support the quasistatic interpretation of tunneling dynamics and confirm that the group delay is not the traversal time of the input pulse peak.

Doiron, Serge; Hache, Alain [Department de physique et d'astronomie, Universite de Moncton, Moncton, New Brunswick, E1A 3E9 (Canada); Winful, Herbert G. [Department of Electrical Engineering and Computer Science, University of Michigan, 1301 Beal Avenue, Ann Arbor, Michigan 48109-2122 (United States)

2007-08-15T23:59:59.000Z

385

Axial gap permanent-magnet machine with reluctance poles and PM element covers  

SciTech Connect (OSTI)

An electric machine (10) has a disk-shaped rotor (24) disposed in an operating space between two opposing stator assemblies (11, 12) to provide two axial air gaps (15, 16). The rotor (24) has a hub (28) and an outer ring (26) of non-magnetic material and is further provided with a plurality of permanent magnetic elements (25) for coupling flux that is induced by the magnetic field of the stator assemblies (11, 12). The permanent magnetic elements (25) are spaced apart and reluctance poles (27) are positioned in spaces between the magnetic elements (25) to couple additional flux induced by the magnetic field of the stator assemblies (11, 12). Various constructions and shapes (40-45) for the PM magnetic elements (25) are disclosed, and including PM covers (60) of ferromagnetic material for enhancing q-axis flux in the air gaps (15, 16) and for reducing harmonics where toothed stators are used. Methods of providing increased torque using the the various rotor constructions are also disclosed.

Hsu, John S [Oak Ridge, TN; McKeever, John W [Oak Ridge, TN

2009-04-07T23:59:59.000Z

386

NOVEL CHAMBER DESIGN FOR AN IN-VACUUM CRYO-COOLED MINI-GAP UNDULATOR.  

SciTech Connect (OSTI)

A stainless steel, Ultra-High Vacuum (UHV) chamber, featuring a large vertical rectangular port (53''W by 16''H), has been fabricated to house the one-meter magnet assembly of a newly installed undulator insertion device for beamline X-25 at the National Synchrotron Light Source. To achieve UHV, the new chamber is equipped with a differential ion pump, NEG pump, nude ion gauge, residual gas analyzer, and an all metal roughing valve. Temperature of the magnet assembly is maintained below 90 C during vacuum bake. The large rectangular port cover is sealed to the main flange of the chamber using a one-piece flat aluminum gasket and special sealing surfaces developed exclusively by Nor-Cal Products, Inc. The large flange provides easy access to the gap of the installed magnet girders for in situ magnetic measurements and shimming. Special window ports were designed into the cover and chamber for manipulation of optical micrometers external to the chamber to provide precise measurements of the in-vacuum magnet gap. The vacuum chamber assembly features independently vacuum-isolated feedthroughs that can be used for either water-or-cryogenic refrigeration-cooling of the monolithic magnet girders. This would allow for cryogenic-cooled permanent magnet operation and has been successfully tested within temperature range of +100 C to -150 C. Details of the undulator assembly for beamline X-25 is described in the paper.

HU, J.-P.; FOERSTER, C.L.; SKARITKA, J.R.; WATERMAN, D.

2006-05-24T23:59:59.000Z

387

ACCRETION OF GAS ONTO GAP-OPENING PLANETS AND CIRCUMPLANETARY FLOW STRUCTURE IN MAGNETIZED TURBULENT DISKS  

SciTech Connect (OSTI)

We have performed three-dimensional magnetohydrodynamical simulations of stellar accretion disks, using the PLUTO code, and studied the accretion of gas onto a Jupiter-mass planet and the structure of the circumplanetary gas flow after opening a gap in the disk. We compare our results with simulations of laminar, yet viscous disks with different levels of an {alpha}-type viscosity. In all cases, we find that the accretion flow across the surface of the Hill sphere of the planet is not spherically or azimuthally symmetric, and is predominantly restricted to the mid-plane region of the disk. Even in the turbulent case, we find no significant vertical flow of mass into the Hill sphere. The outer parts of the circumplanetary disk are shown to rotate significantly below Keplerian speed, independent of viscosity, while the circumplanetary disk density (therefore the angular momentum) increases with viscosity. For a simulation of a magnetized turbulent disk, where the global averaged alpha stress is {alpha}{sub MHD} = 10{sup -3}, we find the accretion rate onto the planet to be M-dot {approx}2 Multiplication-Sign 10{sup -6}M{sub J} yr{sup -1} for a gap surface density of 12 g cm{sup -2}. This is about a third of the accretion rate obtained in a laminar viscous simulation with equivalent {alpha} parameter.

Uribe, A. L. [University of Chicago, Chicago, IL 60637 (United States); Klahr, H.; Henning, Th., E-mail: uribe@oddjob.uchicago.edu [Max-Planck-Institut fuer Astronomie, Heidelberg (Germany)

2013-06-01T23:59:59.000Z

388

Financing innovations in uncertain networksFilling in roadmap gaps in the semiconductor industry  

Science Journals Connector (OSTI)

Complex technologies are often developed in inter-organisational networks as actors try to reduce development costs and uncertainty about the viability of these innovations. However, as of to date it remains unclear how such innovations are financed collectively under conditions characterised by extreme uncertainty. Hence we explore how financial resources within innovation networks are mobilised and allocated. This question is of particular importance to the development of system technologies that are viable only if all critical components are functional on time. We explore this issue by reviewing the development of a radically new system technology for mass manufacturing microchips in the semiconductor industry. In this industry, technological roadmaps allow actors to identify critical components that still need to be developed. These components are the so-called roadmap gaps. However, suppliers can be reluctant to develop the required components at their own expense because of the high uncertainties involved. In such cases, providing financial support to component suppliers is a central task of innovation networks. The empirical analysis shows that semiconductor manufacturers take both an individual and a collective approach to filling roadmap gaps. This study contributes to prior research on innovation networks and financial management not only by identifying and clarifying these two approaches, but also by revealing under which conditions they are used. The findings are particularly relevant to scholars interested in the innovations of complex product systems (CoPS).

Knut Lange; Gordon Mller-Seitz; Jrg Sydow; Arnold Windeler

2013-01-01T23:59:59.000Z

389

Technology Gap Analysis for the Detection of Process Signatures Using Less Than Remote Methods  

SciTech Connect (OSTI)

Although remote sensing methods offer advantages for monitoring important illicit process activities, remote and stand-off technologies cannot successfully detect all important processes with the sensitivity and certainty that is desired. The main scope of the program is observables, with a primary focus on chemical signatures. A number of key process signatures elude remote or stand-off detection for a variety of reasons (e.g., heavy particulate emissions that do not propagate far enough for detection at stand-off distances, semi-volatile chemicals that do not tend to vaporize and remain in the environment near the source, etc.). Some of these compounds can provide persistent, process-specific information that is not available through remote techniques; however, the associated measurement technologies have their own set of advantages, disadvantages and technical challenges that may need to be overcome before additional signature data can be effectively and reliably exploited. The main objective of this report is to describe a process to identify high impact technology gaps for important less-than-remote detection applications. The subsequent analysis focuses on the technology development needed to enable exploitation of important process signatures. The evaluation process that was developed involves three interrelated and often conflicting requirements generation activities: Identification of target signature chemicals with unique intelligence value and their associated attributes as mitigated by environmentally influenced fate and transport effects (i.e., what can you expect to actually find that has intelligence value, where do you need to look for it and what sensitivity and selectivity do you need to see it) Identification of end-user deployment scenario possibilities and constraints with a focus on alternative detection requirements, timing issues, logistical consideration, and training requirements for a successful measurement Identification of available measurement technology alternatives and their associated attributes (available off-the-shelf, in near-term development, likely longer-term development and research-phase possibilities). Assembling these requirements into attribute verses generic acceptance criteria level tables and then comparing related attributes between tables allows for rapid visualization of technology gaps and gross estimates of the gap size. By simply weighting the attributes and the requirements in various ways one can also derive the importance of the identified technology gaps. This output can provide the basis for both a near-term technology development roadmap and research focus as well as a decision support tool for selecting the most likely to succeed approach. The evaluation process as presented is generally applicable for the determination of measurement technology gaps for a broad range of applications [e.g., nuclear weapons process, chemical weapons production, biological weapons production as well as classical signature categories (e.g., chemical and radionuclide signatures)]. In this paper the method is applied to the specific case of detecting nuclear weapons production processes using semi-volatile chemical signatures as an illustration. This particular case selection allows the leveraging of significant prior knowledge and experience while still being highly relevant to current detection scenario needs.

Hartman, John S.; Atkinson, David A.; Lind, Michael A.; Maughan, A. D.; Kelly, James F.

2005-01-01T23:59:59.000Z

390

Experimental investigation on wave run-up characteristics along columns and air gap response of semi-submersible platform  

Science Journals Connector (OSTI)

This article mainly concentrates on a large-volume drilling semi-submersible platform, aiming to reveal wave run-up characteristics along square columns and give the relationship between air gap distributions and wave parameters. The tests with fixed model were conducted firstly on its encountering a series of monochromatic waves. A wide range of wave slope (H/L) were selected to investigate the air gap response in detail. As can be seen, larger wave steepness will generally cause smaller air gap in the same wave period, which indicates nonlinear effects of incoming wave can amplify wave elevation. Model tests with mooring condition were also conducted in the same wave conditions. As was expected, the maximum relative wave elevation reduces obviously compared with the fixed one. However, wave shape close to columns show higher harmonic characteristics due to interaction between waves and the columns of semi-submersible platform. Meaningful conclusions from the model tests are drawn in this article, which is helpful in air gap design of floating offshore platform to a certain extent. In addition, the experimental results will provide an important reference for further research on validation and update of theoretical models of air gap.

Tie-bing SHAN; Jian-min YANG; Xin LI; Long-fei XIAO

2011-01-01T23:59:59.000Z

391

Sustainability Fact Sheet for Reser Stadium Expansion (Phase1) Oregon State University, Corvallis, Oregon  

E-Print Network [OSTI]

efficiency motors are used for HVAC equipment. A high efficiency condensing type boiler is used as the first of high efficiency and standard irrigation technology was used in conjunction with a centrally controlled phosphorus in storm water runoff. · The Energy Star compliant white roof, with high emissivity and high

Escher, Christine

392

Chalking up a Marine Blooming Alga: Genome Fills a Gap in the Tree of Life  

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

June 12, 2013 June 12, 2013 Chalking up a Marine Blooming Alga: Genome Fills a Gap in the Tree of Life To World War II soldiers, "The White Cliffs of Dover" was a morale-boosting song that lifted spirits in dark times. To geographers, the white cliffs mark the point at which England is closest to continental Europe. To scientists, the white cliffs are towering structures made of the chalky, white shells that envelop the single-celled photosynthetic alga known as Emiliania huxleyi. "Ehux" is a coccolithophore, with an exoskeleton made of calcium carbonate. Even though the process by which the alga's "armor" forms releases carbon dioxide, Ehux can trap as much as 20 percent of organic carbon, derived from CO2, in some marine ecosystems. The white cliffs of Dover are composed of the chalky, white shells that envelop the single-celled photosynthetic alga known as Emiliania huxleyi.

393

Neural Networks Bridge Clean Air Act Gaps - PETC Review, Winter 1996  

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

NEURAL NETWORKS BRIDGE NEURAL NETWORKS BRIDGE CLEAN AIR ACT GAPS Making strides in previously untapped areas as environmental restrictions tighten, computer software is claiming an increasingly dominant role in power plant operations that can help utilities and industrial sources ensure emissions compliance. And in some cases, artificial intelligence can heighten the effectiveness of clean coal technologies without inflating costs, rewarding coal-burning utilities that use clean coal technology-style equipment while potentially widening the market for clean coal systems overall. PETC, during the past five years, has pursued scale, PETC researchers are testing artificial an aggressive, $2 million-plus, research cam- intelligence systems' ability to estimate ash paign that focuses on developing simple ways

394

The recovery of glow-plasma structure in atmospheric radio frequency microplasmas at very small gaps  

Science Journals Connector (OSTI)

In atmospheric radio frequency discharges at 13.56 MHz with the electrode gap reduced the sheath region eventually occupies a main portion of the electrode spacing and the bulk plasma region is significantly compressed. The computational results in this letter based on a one-dimensional fluid model show that by increasing the excitation frequency over 13.56 MHz the traditional glow-plasma structure could gradually recover even at very small sizes with a well defined quasineutral plasma region and the electron density is improved but the electric fields in sheath region are reduced. This study indicates that the excitation frequency can be used to modulate the discharge structure and then tailor the plasma-surface interaction in atmospheric microplasmas.

Yuan-Tao Zhang; Wan-Li Shang

2011-01-01T23:59:59.000Z

395

Risk-based bidding of large electric utilities using Information Gap Decision Theory considering demand response  

Science Journals Connector (OSTI)

Abstract The present study presents a new risk-constrained bidding strategy formulation of large electric utilities in, presence of demand response programs. The considered electric utility consists of generation facilities, along with a retailer part, which is responsible for supplying associated demands. The total profit of utility comes from participating in day-ahead energy markets and selling energy to corresponding consumers via retailer part. Different uncertainties, such as market price, affect the profit of the utility. Therefore, here, attempts are made to make use of Information Gap Decision Theory (IGDT) to obtain a robust scheduling method against the unfavorable deviations of the market prices. Implementing demand response programs sounds attractive for the consumers through providing some incentives in one hand, and it improves the risk hedging capability of the utility on the other hand. The proposed method is applied to a test system and effect of demand response programs is investigated on the total profit of the utility.

M. Kazemi; B. Mohammadi-Ivatloo; M. Ehsan

2014-01-01T23:59:59.000Z

396

The recovery of glow-plasma structure in atmospheric radio frequency microplasmas at very small gaps  

SciTech Connect (OSTI)

In atmospheric radio frequency discharges at 13.56 MHz, with the electrode gap reduced, the sheath region eventually occupies a main portion of the electrode spacing and the bulk plasma region is significantly compressed. The computational results in this letter based on a one-dimensional fluid model show that by increasing the excitation frequency over 13.56 MHz, the traditional glow-plasma structure could gradually recover even at very small sizes with a well defined quasineutral plasma region, and the electron density is improved but the electric fields in sheath region are reduced. This study indicates that the excitation frequency can be used to modulate the discharge structure and then tailor the plasma-surface interaction in atmospheric microplasmas.

Zhang Yuantao [Shandong Provincial Key Lab of UHV Technology and Gas Discharge Physics, School of Electrical Engineering, Shandong University, Jinan 250061, Shandong Province (China); Shang Wanli [Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, Sichuan Province (China)

2011-11-15T23:59:59.000Z

397

Identification and Analysis of Critical Gaps in Nuclear Fuel Cycle Codes Required by the SINEMA Program  

SciTech Connect (OSTI)

The current state of the art in nuclear fuel cycle (NFC) modeling is an eclectic mixture of codes with various levels of applicability, flexibility, and availability. In support of the advanced fuel cycle systems analyses, especially those by the Advanced Fuel Cycle Initiative (AFCI), Unviery of Cincinnati in collaboration with Idaho State University carried out a detailed review of the existing codes describing various aspects of the nuclear fuel cycle and identified the research and development needs required for a comprehensive model of the global nuclear energy infrastructure and the associated nuclear fuel cycles. Relevant information obtained on the NFC codes was compiled into a relational database that allows easy access to various codes' properties. Additionally, the research analyzed the gaps in the NFC computer codes with respect to their potential integration into programs that perform comprehensive NFC analysis.

Adrian Miron; Joshua Valentine; John Christenson; Majd Hawwari; Santosh Bhatt; Mary Lou Dunzik-Gougar: Michael Lineberry

2009-10-01T23:59:59.000Z

398

Field-induced gap and quantized charge pumping in a nanoscale helical wire  

Science Journals Connector (OSTI)

We propose several physical phenomena based on nanoscale helical wires. Applying a static electric field transverse to the helical wire induces a metal to insulator transition, with the band gap determined by the applied voltage. A similar idea can be applied to geometrically construct one-dimensional systems with arbitrary external potential. With a quadrupolar electrode configuration, the electric field could rotate in the transverse plane, leading to a quantized dc charge current proportional to the frequency of the rotation. Such a device could be used as a standard for the high-precession measurement of the electric current. The inverse effect implies that passing an electric current through a helical wire in the presence of a transverse static electric field can lead to a mechanical rotation of the helix. This effect can be used to construct nanoscale electromechanical motors. Finally, our methodology also enables ways of controlling and measuring the electronic properties of helical biological molecules such as the DNA.

Xiao-Liang Qi and Shou-Cheng Zhang

2009-06-30T23:59:59.000Z

399

A gap capacitance method for slider flying height measurement in near-field optical disk drives  

Science Journals Connector (OSTI)

In order to overcome the diffraction limit of conventional optical disk drives, and substantially increase data storage capacity and density, near-field optical disk drives remain to be realized. The slider of a flying pickup head in a near-field optical disk drive has to fly at a stable spacing above the disk surface. To sense the slider flying height, a gap capacitance method is developed in this study to measure capacitance variation between the pickup head and disk surface. The capacitance varying with the flying height is modulated by a Colpitts oscillator. Subsequent demodulation accounts for height variation of the flying pickup head. Measurement results of this method are verified by using a laser Doppler interferometer.

J.W. Chen; T.S. Liu

2004-01-01T23:59:59.000Z

400

Bott periodicity for $Z_2$ symmetric ground states of gapped free-fermion systems  

E-Print Network [OSTI]

Building on the symmetry classification of disordered fermions, we give a proof of the proposal by Kitaev, and others, for a "Bott clock" topological classification of free-fermion ground states of gapped systems with symmetries. Our approach differs from previous ones in that (i) we work in the standard framework of Hermitian quantum mechanics over the complex numbers, (ii) we directly formulate a mathematical model for ground states rather than spectrally flattened Hamiltonians, and (iii) we use homotopy-theoretic tools rather than K-theory. Key to our proof is a natural transformation that squares to the standard Bott map and relates the ground state of a d-dimensional system in symmetry class s to the ground state of a (d+1)-dimensional system in symmetry class s+1. This relation gives a new vantage point on topological insulators and superconductors.

Ricardo Kennedy; Martin R. Zirnbauer

2015-01-31T23:59:59.000Z

Note: This page contains sample records for the topic "gap amor stadium" 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

Metabolic Alkalosis From Unsuspected Ingestion: Use of Urine pH and Anion Gap  

Science Journals Connector (OSTI)

Underlying causes of metabolic alkalosis may be evident from history, evaluation of effective circulatory volume, and measurement of urine chloride concentration. However, identification of causes may be difficult for certain conditions associated with clandestine behaviors, such as surreptitious vomiting, use of drugs or herbal supplements with mineralocorticoid activity, abuse of laxatives or diuretics, and long-term use of alkalis. In these circumstances, clinicians often are bewildered by unexplained metabolic alkalosis from an incomplete history or persistent deception by the patient, leading to misdiagnosis and poor outcome. We present a case of severe metabolic alkalosis and hypokalemia with a borderline urine chloride concentration in an alcoholic patient treated with a thiazide. The cause of the patient's metabolic alkalosis eventually was linked to surreptitious ingestion of baking soda. This case highlights the necessity of a high index of suspicion for the diverse clandestine behaviors that can cause metabolic alkalosis and the usefulness of urine pH and anion gap in its differential diagnosis.

Joo-Hark Yi; Sang-Woong Han; June-Seok Song; Ho-Jung Kim

2012-01-01T23:59:59.000Z

402

Photonic-band-gap effects in two-dimensional polycrystalline and amorphous structures  

SciTech Connect (OSTI)

We study numerically the density of optical states (DOS) in two-dimensional photonic structures with short-range positional order and observe a transition from polycrystalline to amorphous photonic systems. In polycrystals, photonic band gaps (PBGs) are formed within individual domains, which leads to a depletion of the DOS similar to that in periodic structures. In amorphous photonic media, the domain sizes are too small to form PBGs, thus the depletion of the DOS is weakened significantly. The critical domain size that separates the polycrystalline and amorphous regimes is determined by the attenuation length of Bragg scattering, which depends not only on the degree of positional order but also the refractive-index contrast of the photonic material. Even with relatively low-refractive-index contrast, we find that modest short-range positional order in photonic structures enhances light confinement via collective scattering and interference.

Yang, Jin-Kyu; Noh, Heeso; Liew, Seng-Fatt [Department of Applied Physics, Yale University, New Haven, Connecticut 06520-8482 (United States); Schreck, Carl [Department of Physics, Yale University, New Haven, Connecticut 06520-8120 (United States); Guy, Mikhael I. [Science and Research Software Core, Yale University, New Haven, Connecticut 06520-8286 (United States); O'Hern, Corey S. [Department of Mechanical Engineering and Materials Science, Yale University, New Haven, Connecticut 06520-8286 (United States); Department of Physics, Yale University, New Haven, Connecticut 06520-8120 (United States); Cao, Hui [Department of Applied Physics, Yale University, New Haven, Connecticut 06520-8482 (United States); Department of Physics, Yale University, New Haven, Connecticut 06520-8120 (United States)

2010-11-15T23:59:59.000Z

403

Midterm decision-making framework for an electricity retailer based on Information Gap Decision Theory  

Science Journals Connector (OSTI)

Abstract In midterm planning, the objective of an electricity retailer is to manage a portfolio of different contracts and to determine the selling price offered to its clients. This paper provides a novel technique based on Information Gap Decision Theory (IGDT) to assess different strategies for a retailer under unstructured pool price uncertainty. This method can be used as a tool for assessing the risk levels, considering whether a retailer is risk-taking or risk-averse regarding its midterm strategies. Supply sources include forward contracts, a limited self-generating facility, and the pool. It is shown that in robust strategy, procurement from sources with uncertain prices decreases. Also, the selling price offered to the consumers rises, decreasing the actual demand of the retailer, and consequently the expected profit is decreased. A case study is used to illustrate the proposed technique.

Mansour Charwand; Zeinab Moshavash

2014-01-01T23:59:59.000Z

404

Periodically specified problems: An exponential complexity gap between exact and approximate solutions  

SciTech Connect (OSTI)

We study both the complexity and approximability of various graph and combinatorial problems specified using two dimensional narrow periodic specifications (see [CM93, HW92, KMW67, KO91, Or84b, Wa93]). The following two general kinds of results are presented. (1) We prove that a number of natural graph and combinatorial problems are NEXPTIME- or EXPSPACE-complete when instances are so specified; (2) In contrast, we prove that the optimization versions of several of these NEXPTIME-, EXPSPACE-complete problems have polynomial time approximation algorithms with constant performance guarantees. Moreover, some of these problems even have polynomial time approximation schemes. We also sketch how our NEXPTIME-hardness results can be used to prove analogous NEXPTIME-hardness results for problems specified using other kinds of succinct specification languages. Our results provide the first natural problems for which there is a proven exponential (and possibly doubly exponential) gap between the complexities of finding exact and approximate solutions.

Hunt, H.B. III; Rosenkrantz, D.J.; Stearns, R.E.; Marathe, M.V.; Radhakrishnan, V. [Univ. at Albany, NY (United States). Dept. of Computer Science

1994-11-28T23:59:59.000Z

405

Particle Image Velocimetry Measurements and Analysis of Bypass Data for a Scaled 6mm Gap  

SciTech Connect (OSTI)

The purpose of the fluid dynamics experiments in the MIR (Matched Index of-Refraction) flow system at Idaho National Laboratory (INL) is to develop benchmark databases for the assessment of Computational Fluid Dynamics (CFD) solutions of the momentum equations, scalar mixing, and turbulence models for the flow ratios between coolant channels and bypass gaps in the interstitial regions of typical prismatic standard fuel element (SFE) or upper reflector block geometries of typical Modular High-temperature Gas-cooled Reactors (MHTGR) in the limiting case of negligible buoyancy and constant fluid properties. The experiments will use optical techniques, primarily particle image velocimetry (PIV) in the INL Matched Index of Refraction (MIR) flow system.

J.R. Wolf; T.E. Conder; R.R. Schultz

2012-09-01T23:59:59.000Z

406

Rotating Bose-Einstein condensates: Closing the gap between exact and mean-field solutions  

E-Print Network [OSTI]

When a Bose-Einstein condensed cloud of atoms is given some angular momentum, it forms vortices arranged in structures with a discrete rotational symmetry. For these vortex states, the Hilbert space of the exact solution separates into a "primary" space related to the mean-field Gross-Pitaevskii solution and a "complementary" space including the corrections beyond mean-field. Considering a weakly-interacting Bose-Einstein condensate of harmonically-trapped atoms, we demonstrate how this separation can be used to close the conceptual gap between exact solutions for systems with only a few atoms and the thermodynamic limit for which the mean-field is the correct leading-order approximation. Although we illustrate this approach for the case of weak interactions, it is expected to be more generally valid.

Cremon, J C; Karabulut, E \\" O; Kavoulakis, G M; Mottelson, B R; Reimann, S M

2015-01-01T23:59:59.000Z

407

Some insights into French entrepreneurship research from the hypofirm model to the PIE and GAP typology  

Science Journals Connector (OSTI)

This contribution deals with the pioneering research on entrepreneurship and small businesses that Professor Marchesnay initiated in France in the mid-80s, by setting up a research team devoted to the study of firms and industry (ERFI) at the University of Montpellier. Two major contributions on entrepreneurship and small business theories are described. Firstly, the hypofirm model, published in 1980, aimed to justify in some logical manner the superiority of smallness under given circumstances. The model anticipated some well-known concepts, such as dynamic capabilities or transaction costs. Secondly, the typology of entrepreneurs, published in 1987, based on the dominant logic of action, either patrimonial or entrepreneurial, contributed to establish a clear-cut differentiation between the entrepreneurs in search of either a perennial business activity (PIE), or simply rapid success (GAP). That typology lead to another one based on the duality between the social need for legitimacy and the economic incentive to competitiveness.

Michel Marchesnay

2011-01-01T23:59:59.000Z

408

Pseudomorphic GeSn/Ge(001) quantum wells: Examining indirect band gap bowing  

SciTech Connect (OSTI)

A study of the bandgap character of compressively strained GeSn{sub 0.060-0.091}/Ge(001) quantum wells grown by molecular beam epitaxy is reported. The built-in strain in GeSn wells leads to an increased separation between L and {Gamma} conduction band minima. The prevalent indirect interband transitions in GeSn were probed by photoluminescence spectroscopy. As a result we could simulate the L-valley bowing parameter in GeSn alloys, b{sub L} = 0.80 {+-} 0.06 eV at 10 K. From this we conclude that even compressively strained GeSn/Ge(001) alloys could become direct band gap semiconductors at the Sn-fraction higher than 17.0 at. %.

Tonkikh, Alexander A. [Max Planck Institute of Microstructure Physics, Weinberg 2 D-06120, Halle (Saale) (Germany); Institute for Physics of Microstructures RAS, GSP-105, Nizhniy Novgorod (Russian Federation); Eisenschmidt, Christian; Schmidt, Georg [Institute of Physics, Martin Luther University Halle-Wittenberg, Von-Danckelmann-Platz 3 D-01620, Halle (Saale) (Germany); Talalaev, Vadim G. [Max Planck Institute of Microstructure Physics, Weinberg 2 D-06120, Halle (Saale) (Germany); ZIK SiLi-Nano, Martin Luther University Halle-Wittenberg, Karl-Freiherr-von-Fritsch-Str. 3 D-06120, Halle (Saale) (Germany); Zakharov, Nikolay D.; Werner, Peter [Max Planck Institute of Microstructure Physics, Weinberg 2 D-06120, Halle (Saale) (Germany); Schilling, Joerg [ZIK SiLi-Nano, Martin Luther University Halle-Wittenberg, Karl-Freiherr-von-Fritsch-Str. 3 D-06120, Halle (Saale) (Germany)

2013-07-15T23:59:59.000Z

409

Universal critical behavior of the two-magnon-bound-state mass gap for the -dimensional Ising model  

Science Journals Connector (OSTI)

Abstract The two-magnon-bound-state mass gap m 2 for the two-dimensional quantum Ising model was investigated by means of the numerical diagonalization method; the low-lying spectrum is directly accessible via the numerical diagonalization method. It has been claimed that the ratio m 2 / m 1 ( m 1 : one-magnon mass gap) is a universal constant in the vicinity of the critical point. Aiming to suppress corrections to scaling (lattice artifact), we consider the spin- S = 1 Ising model with finely-adjusted extended interactions. The simulation result for the finite-size cluster with N ? 20 spins indicates the mass-gap ratio m 2 / m 1 = 1.84 ( 1 ) .

Yoshihiro Nishiyama

2014-01-01T23:59:59.000Z

410

Anomalous temperature-dependent band gaps in CuInS2 studied by surface-barrier electroreflectance  

Science Journals Connector (OSTI)

The lowest-energy gaps of CuInS2 have been studied by low-field surface-barrier electroreflectance in the temperature range from 10 to 300 K. Anomalous temperature dependence of E0 and E0+?0 have been found. Below 120 K the temperature coefficient of the band gap is 4.310-5 eV/K for E0 and 5.810-5 eV/K for E0+?0. Above 120 K the coefficients become -8.710-5 eV/K and -4.410-5 eV/K for E0 and E0+?0. These temperature-dependent energy gaps are explained by the reduction of d levels in the upper valence band due to thermal expansion and the competition with the electron-phonon interaction. The temperature dependence of spin-orbit splitting in our experiment confirms this explanation.

T. M. Hsu and J. H. Lin

1988-03-15T23:59:59.000Z

411

Coherent Synchrotron-Based Micro-Imaging Employed for Studies of Micro-Gap Formation in Dental Implants  

SciTech Connect (OSTI)

Biocompatible materials such as titanium are regularly applied in oral surgery. Titanium-based implants for the replacement of missing teeth demand a high mechanical precision in order to minimize micro-bacterial leakage, especially when two-piece concepts are used. Synchrotron-based hard x-ray radiography, unlike conventional laboratory radiography, allows high spatial resolution in combination with high contrast even when micro-sized features in such highly attenuating objects are visualized. Therefore, micro-gap formation at interfaces in two-piece dental implants with the sample under different mechanical loads can be studied. We show the existence of micro-gaps in implants with conical connections and study the mechanical behavior of the mating zone of conical implants during loading. The micro-gap is a potential source of implant failure, i.e., bacterial leakage, which can be a stimulus for an inflammatory process.

Rack, T.; Stiller, M.; Nelson, K. [Charite, Campus Virchow Clinic and Campus Benjamin Franklin, 13353 Berlin (Germany); Zabler, S. [Technische Universitaet Berlin, Strasse des 17. Juni 135, 10623 Berlin (Germany); Rack, A. [European Synchrotron Radiation Facility, BP 220, 38043 Grenoble (France); Riesemeier, H. [Bundesanstalt fuer Materialforschung und -pruefung, Unter den Eichen 80, 12205 Berlin (Germany); Cecilia, A. [Karlsruhe Institute of Technology - ANKA, Pf. 3640, 76021 Karlsruhe (Germany)

2011-09-09T23:59:59.000Z

412

Stabilization of temperature dependence of band Gap by introducing nitrogen ion into GaInNP alloy  

SciTech Connect (OSTI)

The photoluminescence (PL) spectra of GaInNP are observed to survey the origin of the unique behavior of the band gap caused by incorporating nitrogen ions. The temperature dependence of the PL peak position is carefully analyzed. It is found that the reduction of the temperature alteration owing to the nitrogen incorporation arises from the hybridization between the nitrogen local 3s and 3p orbitals and the conduction band. In the GaInNP and host GaInP with the indium content around 50%, which has a direct band gap slightly lower than an X-valley, the band gap shrinkage with temperature is mediated by an LA phonon at X point.

Emura, Shuichi; Nonoguchi, Shogo; Kim, Kang Min [The Institute of Scientific and Industrial Research, Osaka Univ., Mihogaoka 8-1, Ibaraki, Osaka 567-0047 (Japan)

2013-12-04T23:59:59.000Z

413

Rapidity gap cross sections measured with the ATLAS detector in pp collisions at $\\sqrt{s}$ = 7 TeV  

E-Print Network [OSTI]

Pseudorapidity gap distributions in proton-proton collisions at sqrt(s) = 7 TeV are studied using a minimum bias data sample with an integrated luminosity of 7.1 inverse microbarns. Cross sections are measured differentially in terms of Delta eta F, the larger of the pseudorapidity regions extending to the limits of the ATLAS sensitivity, at eta = +/- 4.9, in which no final state particles are produced above a transverse momentum threshold p_T Cut. The measurements span the region 0 Xp), enhanced by double dissociation (pp -> XY) where the invariant mass of the lighter of the two dissociation systems satisfies M_Y ~ 3. The large rapidity gap data are used to constrain the value of the pomeron intercept appropriate to triple Regge models of soft diffraction. The cross section integrated over all gap sizes is compared with other LHC inelastic cross section measurements.

Aad, Georges; Abdallah, Jalal; Abdelalim, Ahmed Ali; Abdesselam, Abdelouahab; Abdinov, Ovsat; Abi, Babak; Abolins, Maris; AbouZeid, Ossama; Abramowicz, Halina; Abreu, Henso; Acerbi, Emilio; Acharya, Bobby Samir; Adamczyk, Leszek; Adams, David; Addy, Tetteh; Adelman, Jahred; Aderholz, Michael; Adomeit, Stefanie; Adragna, Paolo; Adye, Tim; Aefsky, Scott; Aguilar-Saavedra, Juan Antonio; Aharrouche, Mohamed; Ahlen, Steven; Ahles, Florian; Ahmad, Ashfaq; Ahsan, Mahsana; Aielli, Giulio; Akdogan, Taylan; ?kesson, Torsten Paul Ake; Akimoto, Ginga; Akimov, Andrei; Akiyama, Kunihiro; Alam, Mohammad; Alam, Muhammad Aftab; Albert, Justin; Albrand, Solveig; Aleksa, Martin; Aleksandrov, Igor; Alessandria, Franco; Alexa, Calin; Alexander, Gideon; Alexandre, Gauthier; Alexopoulos, Theodoros; Alhroob, Muhammad; Aliev, Malik; Alimonti, Gianluca; Alison, John; Aliyev, Magsud; Allport, Phillip; Allwood-Spiers, Sarah; Almond, John; Aloisio, Alberto; Alon, Raz; Alonso, Alejandro; Alvarez Gonzalez, Barbara; Alviggi, Mariagrazia; Amako, Katsuya; Amaral, Pedro; Amelung, Christoph; Ammosov, Vladimir; Amorim, Antonio; Amors, Gabriel; Amram, Nir; Anastopoulos, Christos; Ancu, Lucian Stefan; Andari, Nansi; Andeen, Timothy; Anders, Christoph Falk; Anders, Gabriel; Anderson, Kelby; Andreazza, Attilio; Andrei, George Victor; Andrieux, Marie-Laure; Anduaga, Xabier; Angerami, Aaron; Anghinolfi, Francis; Anisenkov, Alexey; Anjos, Nuno; Annovi, Alberto; Antonaki, Ariadni; Antonelli, Mario; Antonov, Alexey; Antos, Jaroslav; Anulli, Fabio; Aoun, Sahar; Aperio Bella, Ludovica; Apolle, Rudi; Arabidze, Giorgi; Aracena, Ignacio; Arai, Yasuo; Arce, Ayana; Archambault, John-Paul; Arfaoui, Samir; Arguin, Jean-Francois; Arik, Engin; Arik, Metin; Armbruster, Aaron James; Arnaez, Olivier; Artamonov, Andrei; Artoni, Giacomo; Arutinov, David; Asai, Shoji; Asfandiyarov, Ruslan; Ask, Stefan; ?sman, Barbro; Asquith, Lily; Assamagan, Ketevi; Astbury, Alan; Astvatsatourov, Anatoli; Aubert, Bernard; Auge, Etienne; Augsten, Kamil; Aurousseau, Mathieu; Avolio, Giuseppe; Avramidou, Rachel Maria; Axen, David; Ay, Cano; Azuelos, Georges; Azuma, Yuya; Baak, Max; Baccaglioni, Giuseppe; Bacci, Cesare; Bach, Andre; Bachacou, Henri; Bachas, Konstantinos; Bachy, Gerard; Backes, Moritz; Backhaus, Malte; Badescu, Elisabeta; Bagnaia, Paolo; Bahinipati, Seema; Bai, Yu; Bailey, David; Bain, Travis; Baines, John; Baker, Oliver Keith; Baker, Mark; Baker, Sarah; Banas, Elzbieta; Banerjee, Piyali; Banerjee, Swagato; Banfi, Danilo; Bangert, Andrea Michelle; Bansal, Vikas; Bansil, Hardeep Singh; Barak, Liron; Baranov, Sergei; Barashkou, Andrei; Barbaro Galtieri, Angela; Barber, Tom; Barberio, Elisabetta Luigia; Barberis, Dario; Barbero, Marlon; Bardin, Dmitri; Barillari, Teresa; Barisonzi, Marcello; Barklow, Timothy; Barlow, Nick; Barnett, Bruce; Barnett, Michael; Baroncelli, Antonio; Barone, Gaetano; Barr, Alan; Barreiro, Fernando; Barreiro Guimares da Costa, Joo; Bartoldus, Rainer; Barton, Adam Edward; Bartsch, Valeria; Bates, Richard; Batkova, Lucia; Batley, Richard; Battaglia, Andreas; Battistin, Michele; Bauer, Florian; Bawa, Harinder Singh; Beale, Steven; Beare, Brian; Beau, Tristan; Beauchemin, Pierre-Hugues; Beccherle, Roberto; Bechtle, Philip; Beck, Hans Peter; Becker, Sebastian; Beckingham, Matthew; Becks, Karl-Heinz; Beddall, Andrew; Beddall, Ayda; Bedikian, Sourpouhi; Bednyakov, Vadim; Bee, Christopher; Begel, Michael; Behar Harpaz, Silvia; Behera, Prafulla; Beimforde, Michael; Belanger-Champagne, Camille; Bell, Paul; Bell, William; Bella, Gideon; Bellagamba, Lorenzo; Bellina, Francesco; Bellomo, Massimiliano; Belloni, Alberto; Beloborodova, Olga; Belotskiy, Konstantin; Beltramello, Olga; Ben Ami, Sagi; Benary, Odette; Benchekroun, Driss; Benchouk, Chafik; Bendel, Markus; Benekos, Nektarios; Benhammou, Yan; Benhar Noccioli, Eleonora; Benitez Garcia, Jorge-Armando; Benjamin, Douglas; Benoit, Mathieu; Bensinger, James; Benslama, Kamal; Bentvelsen, Stan; Berge, David; Bergeaas Kuutmann, Elin; Berger, Nicolas; Berghaus, Frank; Berglund, Elina; Beringer, Jrg; Bernat, Pauline; Bernhard, Ralf; Bernius, Catrin; Berry, Tracey; Bertella, Claudia; Bertin, Antonio; Bertinelli, Francesco; Bertolucci, Federico; Besana, Maria Ilaria; Besson, Nathalie; Bethke, Siegfried; Bhimji, Wahid; Bianchi, Riccardo-Maria; Bianco, Michele; Biebel, Otmar; Bieniek, Stephen Paul; Bierwagen, Katharina; Biesiada, Jed; Biglietti, Michela; Bilokon, Halina; Bindi, Marcello; Binet, Sebastien; Bingul, Ahmet; Bini, Cesare; Biscarat, Catherine; Bitenc, Urban; Black, Kevin; Blair, Robert; Blanchard, Jean-Baptiste

2012-01-01T23:59:59.000Z

414

Collagen (NeuraGen) nerve conduits and stem cells for peripheral nerve gap repair  

Science Journals Connector (OSTI)

Abstract Collagen nerve guides are used clinically for peripheral nerve defects, but their use is generally limited to lesions up to 3cm. In this study we combined collagen conduits with cells as an alternative strategy to support nerve regeneration over longer gaps. In vitro cell adherence to collagen conduits (NeuraGen nerve guides) was assessed by scanning electron microscopy. For in vivo experiments, conduits were seeded with either Schwann cells (SC), SC-like differentiated bone marrow-derived mesenchymal stem cells (dMSC), SC-like differentiated adipose-derived stem cells (dASC) or left empty (control group), conduits were used to bridge a 1cm gap in the rat sciatic nerve and after 2-weeks immunohistochemical analysis was performed to assess axonal regeneration and SC infiltration. The regenerative cells showed good adherence to the collagen walls. Primary SC showed significant improvement in distal stump sprouting. No significant differences in proximal regeneration distances were noticed among experimental groups. dMSC and dASC-loaded conduits showed a diffuse sprouting pattern, while SC-loaded showed an enhanced cone pattern and a typical sprouting along the conduits walls, suggesting an increased affinity for the collagen type I fibrillar structure. NeuraGen guides showed high affinity of regenerative cells and could be used as efficient vehicle for cell delivery. However, surface modifications (e.g. with extracellular matrix molecule peptides) of NeuraGen guides could be used in future tissue-engineering applications to better exploit the cell potential.

Pietro G. di Summa; Paul J. Kingham; Corrado C. Campisi; Wassim Raffoul; Daniel F. Kalbermatten

2014-01-01T23:59:59.000Z

415

Analytic description of SU(3) lattice thermodynamics within the mass gap approach. I  

E-Print Network [OSTI]

A general method how to analytically describe and understand $SU(3)$ lattice thermodynamics within the effective potential approach for composite operators properly generalized to finite temperature and density is formulated and used. This makes it possible to introduce into this formalism a dependence on the mass gap, which is responsible for the large-scale dynamical structure of the QCD ground state. The gluon plasma pressure adjusted by this approach to the corresponding lattice data is shown to be a continuously growing function of temperature in the whole temperature range $[0, \\infty)$. The entropy and energy densities have finite jump discontinuities at some characteristic temperature $T_c = 266.5$ MeV with latent heat $\\epsilon_{LH}= 1.41$. This is a firm evidence of the first-order phase transition in $SU(3)$ pure gluon plasma. The heat capacity has a $\\delta$-type singularity (an essential discontinuity) at $T_c$, so that the velocity of sound squared becomes zero at this point. All the independent thermodynamic quantities are exponentially suppressed below $T_c$ and rather slowly approach their respective Stefan-Boltzmann limits at high temperatures. Those thermodynamic quantities which are the ratios of their independent counterparts such as conformity, conformality and the velocity of sound squared approach their Stefan-Boltzmann limits at high temperatures rather rapidly and demonstrate a non-trivial dependence on the temperature below $T_c$. We also calculate the trace anomaly relation (the interaction measure) and the gluon condensate, which are especially sensitive to the non-perturbative effects. All the calculated thermodynamic quantities have a complicate and rather different dependence on the mass gap across $T_c$. An analytical description of the dynamical structure of $SU(3)$ gluon plasma is given as well.

V. Gogokhia; A. Shurgaia; M. Vasth

2014-09-11T23:59:59.000Z

416

Codes and Standards Gap Analysis Helps DOE Define Research Priorities (Fact Sheet), Hydrogen and Fuel Cell Technical Highlights (HFCTH)  

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

6 * November 2010 6 * November 2010 Fuel Vehicle Codes and Standards Gap Documents Impacted Gap Resolution HYDROGEN High pressure storage, handling, and use of hydrogen presents hazards specific to high- pressure systems that may not be completely addressed NFPA 2, NFPA 52, NFPA 55 CGA H series of documents, IFC Evaluated codes and standards that address high pressures to determine if requirements are adequate HYDROGEN Incomplete requirements for sensing technologies NFPA 2, NFPA 52, NFPA 55, IFC Support the use of sensing technologies that replace odorants through evaluating sensing technologies and supporting code and standards development work in sensing technologies HYDROGEN Off-road vehicle storage tank requirements are incomplete CSA HGV 2,

417

Plasma deposition of wide gap, highly photoconductive a-Si:H thin films from disilane-helium mixtures  

SciTech Connect (OSTI)

Wide gap (> 1.9 eV), photoconductive, intrinsic amorphous silicon films were made in a UHV system from Si/sub 2/H/sub 6/-He mixtures. The hydrogen concentrations, optical gaps and photoconductivities were measured. Unlike films made from SiH/sub 4/, Si/sub 2/H/sub 6/-produced films exhibit excellent electronic properties even at low deposition temperatures. The ratio of AM1 photoconductivity to dark conductivity was as high as 10/sup 7/. 17 references, 5 figures, 1 table.

Rajeswaran, G.; Vanier, P.E.; Corderman, R.R.; Kampas, F.J.

1985-01-01T23:59:59.000Z

418

Four-gap glass RPC as a candidate to a large area thin time-of-flight detector  

E-Print Network [OSTI]

A four-gap glass RPC with 0.3mm gap size was tested with hadron beam as a time-of-flight detector having a time resolution of ~ 100ps. A thickness of the detector together with front-end electronics is ~ 12mm. Results on time resolution dependently on a pad size are presented. This paper contains first result on the timing RPC (with ~ 100ps resolution) having a strip read-out. Study has been done within the HARP experiment (CERN-PS214) R&D work. A obtaned data can be useful if a design of a large area thin timing detector has to be done.

V. Ammosov; V. Gapienko; A. Semak; V. Senko; Yu. Sviridov; V. Zaets; E. Usenko

2002-04-17T23:59:59.000Z

419

More insights into band gap graded a-SiGe:H solar cells by experimental and simulated data  

SciTech Connect (OSTI)

An experimental and numerical study of a-SiGe:H based solar cells with band gap graded i-layer in the shape of a V is presented. The variation of the location of the band gap minimum has strong influence on the solar cell performance. Comparisons of experimental and simulated data of the dark IV-behavior, IV-curves under illumination and the quantum efficiency allow insights into the transport and recombination behavior within the solar cell. The simulations reveal that the position as well as the charge state of the defects determine the device characteristics.

Zimmer, J.; Stiebig, H.; Foelsch, J.; Finger, F.; Eickhoff, T.; Wagner, H.

1997-07-01T23:59:59.000Z

420

Miscibility gap in the U-Nd-O phase diagram: a new approach of nuclear oxides in the environment?  

SciTech Connect (OSTI)

To some extent, rare-earth-doped UO{sub 2} is representative of an irradiated nuclear fuel. The two phases we observed previously in neodymium-doped UO{sub 2} are now interpreted as the existence of a miscibility gap in the U-Nd-O phase diagram using new results obtained with Raman spectroscopy. Extrapolating the miscibility gap in the U-Nd-O phase diagram to irradiated UO{sub 2} opens the path to a new understanding of nuclear oxides in the environment. (authors)

Desgranges, L.; Pontillon, Y.; Matheron, P.; Marcet, M. [CEA DEN DEC, F-13108 St Paul Les Durance, (France); Simon, P.; Guimbretiere, G. [CEMHTI, CNRS UPR 3079, F-45071 Orleans 2, (France); Porcher, F. [Ctr Etud Saclay, CEA DSM IRAMIS, F-91191 Gif Sur Yvette, (France)

2012-09-15T23:59:59.000Z

Note: This page contains sample records for the topic "gap amor stadium" from the National Library of EnergyBeta (NLEBeta).
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421

Magnetism and interaction-induced gap opening in graphene with vacancies or hydrogen adatoms: Quantum Monte Carlo study  

E-Print Network [OSTI]

We study electronic properties of graphene with finite concentration of vacancies or other resonant scatterers by a straightforward lattice Quantum Monte Carlo calculations. Taking into account realistic long-range Coulomb interaction we calculate distribution of spin density associated to midgap states and demonstrate antiferromagnetic ordering. Energy gap are open due to the interaction effects, both in the bare graphene spectrum and in the vacancy/impurity bands. In the case of 5 % concentration of resonant scatterers the latter gap is estimated as 0.7 eV and 1.1 eV for graphene on boron nitride and freely suspended graphene, respectively.

M. V. Ulybyshev; M. I. Katsnelson

2015-02-04T23:59:59.000Z

422

Magnetism and interaction-induced gap opening in graphene with vacancies or hydrogen adatoms: Quantum Monte Carlo study  

E-Print Network [OSTI]

We study electronic properties of graphene with finite concentration of vacancies or other resonant scatterers by a straightforward lattice Quantum Monte Carlo calculations. Taking into account realistic long-range Coulomb interaction we calculate distribution of spin density associated to midgap states and demonstrate antiferromagnetic ordering. Energy gap are open due to the interaction effects, both in the bare graphene spectrum and in the vacancy/impurity bands. In the case of 5 % concentration of resonant scatterers the latter gap is estimated as 0.7 eV and 1.1 eV for graphene on boron nitride and freely suspended graphene, respectively.

Ulybyshev, M V

2015-01-01T23:59:59.000Z

423

Thermal conductivity of the electrode gap of a therminonic converter, filled with inert gases, at low pressures  

SciTech Connect (OSTI)

This paper presents experimental data on the thermal conductivity of the electrode gap of a thermionic converter filled with He, Ar, and Xe in the pessure range 40-550 Pa. The need to account for the coefficients of thermal accomodation of the emitter-inert-gas-collector system in this range is shown. The accomodation coefficients for different temperature regimes are measured and expressions are obtained to calculate the heat flux transported by the inert gases in the electrode gap. A diagram of the experimental thermionic converter is shown.

Modin, V.A.; Nikolaev, Y.V.

1986-05-01T23:59:59.000Z

424

Energy gaps in the failed high-Tc superconductor La1:875Ba0:125CuO4  

E-Print Network [OSTI]

B. The pseudogap i n high-temperature superconductors: A ntwo gaps of the high-temperature superconductor B i S r C u

He, R.-H.

2012-01-01T23:59:59.000Z

425

X-ray Photoelectron Spectroscopy of GaP{1-x}N(x) Photocorroded as a Result of Hydrogen Production through Water Electrolysis  

E-Print Network [OSTI]

X-ray Photoelectron Spectroscopy of GaP{1-x}N(x) Photocorroded as a Result of Hydrogen Production through Water Electrolysis

Mayer, Marie A

2006-01-01T23:59:59.000Z

426

Predicting New TiO2 Phases with Low Band Gaps by a Multiobjective Global Optimization Approach  

E-Print Network [OSTI]

stable. This is equivalent to a global optimization problem of a biobjective function, i.e., total energyPredicting New TiO2 Phases with Low Band Gaps by a Multiobjective Global Optimization Approach Hou as a novel global optimization algorithm to predict new polymorphs of bulk TiO2 with better optical

Gong, Xingao

427

Wide-band-gap InAlAs solar cell for an alternative multijunction approach Marina S. Leite,1,a  

E-Print Network [OSTI]

Wide-band-gap InAlAs solar cell for an alternative multijunction approach Marina S. Leite,1,a Robyn L. Woo,2 William D. Hong,2 Daniel C. Law,2 and Harry A. Atwater1 1 California Institute of Technology, 1200 E. California Blvd., Pasadena, California 91125, USA 2 Boeing-Spectrolab Inc., 12500

Atwater, Harry

428

Controlling the tape's gap in robotized fiber placement process using a visual servoing external hybrid control scheme  

E-Print Network [OSTI]

of composites in the following areas: Aerospace & Defense (46 % of 8.100 t), Wind Turbines (74 % of 9.5 tACMA 2014 Controlling the tape's gap in robotized fiber placement process using a visual servoing external hybrid control scheme Maylis Uhart1,2 , Olivier Patrouix1 , Yannick Aoustin2 1 ESTIA, ESTIA

Boyer, Edmond

429

Predators and distance between habitat patches modify gap crossing behaviour of juvenile Atlantic cod (Gadus morhua, L. 1758)  

Science Journals Connector (OSTI)

When habitat refugia is fragmented and limited, movement of potential prey animals between patches of protective habitat may be driven by biotic factors including foraging opportunities, risk of predation mortality, as well as density effects. However, few studies have examined these factors in marine landscapes. We examined gap crossing behaviour of juvenile Atlantic cod, Gadus morhua L. 1758, a species with high mortality throughout its juvenile stage. We examined the effect of inter-patch distance, fish length, group size, and the presence of a predator on gap crossing behaviour by juvenile cod in a 12נ3m experimental arena. Habitat patches consisting of artificial eelgrass were positioned within the arena with inter-patch distances of 3.0m and 7.5m. We observed a 37% reduction in frequency of gap crossing movements at larger distances compared to small ones. At the greater inter-patch distance, fish delayed departing a patch, depending on average group size. Juvenile fish released into a patch with a nearby predator moved across gaps 75% less frequently than fish originating in a predator-free patch. We also found that the presence of a predator delayed fish departure from a patch, again depending on group size. Our study demonstrates a suite of complex behavioural mechanisms that juvenile cod may exhibit to reduce predation risk as they navigate a landscape of fragmented habitat patches.

Mary R. Ryan; Shaun S. Killen; Robert S. Gregory; Paul V.R. Snelgrove

2012-01-01T23:59:59.000Z

430

OPTIMIZATION OF GRADED BAND GAP CdHgTe SOLAR CELLS A. BOUAZZI (*), Y. MARFAING and J. MIMILA-ARROYO  

E-Print Network [OSTI]

limited to 6 % in Cu2Te/CdTe junctions [4, 5], 7.9 % in CdS/CdTe heterojunctions and 6 % in homojunc with uniform doping followed by a base region with uni- form gap and doping. Our goal is to find the optimum

Boyer, Edmond

431

Study of Various Slanted Air-Gap Structures of Interior Permanent Magnet Synchronous Motor with Brushless Field Excitation  

SciTech Connect (OSTI)

This paper shows how to maximize the effect of the slanted air-gap structure of an interior permanent magnet synchronous motor with brushless field excitation (BFE) for application in a hybrid electric vehicle. The BFE structure offers high torque density at low speed and weakened flux at high speed. The unique slanted air-gap is intended to increase the output torque of the machine as well as to maximize the ratio of the back-emf of a machine that is controllable by BFE. This irregularly shaped air-gap makes a flux barrier along the d-axis flux path and decreases the d-axis inductance; as a result, the reluctance torque of the machine is much higher than a uniform air-gap machine, and so is the output torque. Also, the machine achieves a higher ratio of the magnitude of controllable back-emf. The determination of the slanted shape was performed by using magnetic equivalent circuit analysis and finite element analysis (FEA).

Tolbert, Leon M [ORNL; Lee, Seong T [ORNL

2010-01-01T23:59:59.000Z

432

Analysis of roll gap heat transfers in hot steel strip rolling through roll temperature sensors and heat transfer models  

E-Print Network [OSTI]

Analysis of roll gap heat transfers in hot steel strip rolling through roll temperature sensors and heat transfer models N. Legrand1,a , N. Labbe1,b D. Weisz-Patrault2,c , A. Ehrlacher2,d , T. Luks3,e heat transfers during pilot hot steel strip rolling. Two types of temperature sensors (drilled and slot

Paris-Sud XI, Université de

433

An assessment of the pulsar outer gap model. II: Implications for the predicted $\\gamma$-ray spectra  

E-Print Network [OSTI]

One of the most important predictions of any gap model for pulsar magnetospheres is the predicted $\\gamma$-ray spectra. In the outer gap model, the properties of the synchro-curvature radiation are sensitive to many parameters, whose realistic ranges have been studied in detail in an accompanying paper. There we demonstrated that the uncertainty in the radius of curvature, the magnetic field geometry, and the X-ray surface flux may affect by orders of magnitude the predicted flux and spectral peak in the $\\gamma$-ray regime. Here, we present a systematic, numerical study of the impact of the different parameters on the particle dynamics along the gap and calculate the emitted synchro-curvature radiation along the trajectory. By integrating the emitted radiation along the gap and convolving it with a parametrized particle distribution, we discuss how the comparison with the wealth of {\\em Fermi}-LAT data can be used to constrain the applicability of the model. The resulting spectra show very different energy p...

Vigan, Daniele; Hirotani, Kouichi; Pessah, Martn E

2014-01-01T23:59:59.000Z

434

Developments for a Swept Wing Airfoil to Study the Effects of Step and Gap Excrescences on Boundary Layer Transition  

E-Print Network [OSTI]

on excrescences on flat plates, and only recently included pressure gradient effects. A new three-dimensional swept wing airfoil with an actuated leading edge (SWIFTER) has been constructed, and will extend the body of knowledge of step and gap excrescences to a...

Hedderman, Simon Peter

2013-01-15T23:59:59.000Z

435

Scientific Issues and Gaps for High-Performance Steady-State Burning-Plasmas Fusion Innovation Research and Energy  

E-Print Network [OSTI]

Innovation Research and Energy Princeton, NJ 08540 Introduction Fusion energy is a potential energy source for an electricity producing power plant. Recently, the FESAC Priorities, Gaps and Opportunities Panel identified, and extracting plasma exhaust power) Theme C ­ Harnessing the Power of Fusion (extracting neutron power, breeding

436

Another Hanukkah Miracle: The Gaps Between Consecutive Christmas-in-Hanukkah Years is ALWAYS a Fibonacci Number!  

E-Print Network [OSTI]

of my beloved master, commented this last Christmas Eve that it is so nice to be able to light a menorahAnother Hanukkah Miracle: The Gaps Between Consecutive Christmas-in-Hanukkah Years is ALWAYS this Christmas Eve, the fifth candle of Hanukkah 5772, who did not like computers (even for Email

Zeilberger, Doron

437

AL presents a remedy to duality gap encountered with the ordinary Lagrangian for nonconvex problems. It shapes the Lagrangian function  

E-Print Network [OSTI]

AL presents a remedy to duality gap encountered with the ordinary Lagrangian for nonconvex problems with pumped-storage units. An IEEE 24-bus test system is used for AL performance illustration. Com- putational models are all coded in C. The results ofthe test case show that the AL approach can provide better

Gross, George

438

An Extended Dead-End Elimination Algorithm to Determine Gap-Free Lists of Low Energy States  

E-Print Network [OSTI]

modelling; global energy minimum; bacteriorhodopsin; protonation state; pH titration; X-DEE; dead of lowest free energy is the most prob- able and thus of primary interest in structural research. ProteinsAn Extended Dead-End Elimination Algorithm to Determine Gap-Free Lists of Low Energy States EDDA

Ullmann, G. Matthias

439

Conformal GaP layers on Si wire arrays for solar energy applications Adele C. Tamboli,a  

E-Print Network [OSTI]

are a promising geometry for solar en- ergy conversion in semiconductors with a limited minority carrier diffusionConformal GaP layers on Si wire arrays for solar energy applications Adele C. Tamboli,a Manav length.1 The microwire geometry decouples the absorption length and minority carrier diffusion length

Kimball, Gregory

440

Use the Web to Close the Mathematics Gap Leendert van Gastel, Hans Cuypers, Henk van der Kooij, Dirk Tempelaar, and  

E-Print Network [OSTI]

is raging about causes and remedies. The gap in the mathematics transition was even a central topic in a parliamentary investigation into the problematic outcomes of educational innovations. In the meantime, a country of remedial courses are shared. Teams of teachers from secondary and higher education develop algebraic skills

Cuypers, Hans

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441

Cap Gap Extensions This information is issued to F-1 International Students at the Illinois Institute of Technology as guidance.  

E-Print Network [OSTI]

of beneficiaries who will work at institutions of higher education or a related or affiliated nonprofit entityCap Gap Extensions This information is issued to F-1 International Students at the Illinois Institute of Technology as guidance. This guidance is not immigration regulation and is not intended

Heller, Barbara

442

Absorption of Narrow-Gap HgCdTe Near the Band Edge Including Nonparabolicity and the Urbach Tail  

E-Print Network [OSTI]

Absorption of Narrow-Gap HgCdTe Near the Band Edge Including Nonparabolicity and the Urbach Tail, USA. 6.--e-mail: yonchang@uic.edu An analytical model describing the absorption behavior of Hg1-x. This model smoothly fits experimental absorption coefficients over energies ranging from the Urbach tail

Flatte, Michael E.

443

PHYSICAL REVIEW B 84, 075144 (2011) Fundamental and excitation gaps in molecules of relevance for organic photovoltaics from an  

E-Print Network [OSTI]

for organic photovoltaics from an optimally tuned range-separated hybrid functional Sivan Refaely-Abramson,1 and optical gaps of relevant molecular systems are of primary importance for organic-based photovoltaics of photovoltaically relevant and other molecular systems. DOI: 10.1103/PhysRevB.84.075144 PACS number(s): 71.15.Mb I

Baer, Roi

444

L-asparagine crystals with wide gap semiconductor features: Optical absorption measurements and density functional theory computations  

SciTech Connect (OSTI)

Results of optical absorption measurements are presented together with calculated structural, electronic, and optical properties for the anhydrous monoclinic L-asparagine crystal. Density functional theory (DFT) within the generalized gradient approximation (GGA) including dispersion effects (TS, Grimme) was employed to perform the calculations. The optical absorption measurements revealed that the anhydrous monoclinic L-asparagine crystal is a wide band gap material with 4.95 eV main gap energy. DFT-GGA+TS simulations, on the other hand, produced structural parameters in very good agreement with X-ray data. The lattice parameter differences ?a, ?b, ?c between theory and experiment were as small as 0.020, 0.051, and 0.022, respectively. The calculated band gap energy is smaller than the experimental data by about 15%, with a 4.23 eV indirect band gap corresponding to Z???? and Z???? transitions. Three other indirect band gaps of 4.30 eV, 4.32 eV, and 4.36 eV are assigned to ?3 ???, ?1 ???, and ?2 ??? transitions, respectively. ?-sol computations, on the other hand, predict a main band gap of 5.00 eV, just 50 meV above the experimental value. Electronic wavefunctions mainly originating from O 2pcarboxyl, C 2pside chain, and C 2pcarboxyl orbitals contribute most significantly to the highest valence and lowest conduction energy bands, respectively. By varying the lattice parameters from their converged equilibrium values, we show that the unit cell is less stiff along the b direction than for the a and c directions. Effective mass calculations suggest that hole transport behavior is more anisotropic than electron transport, but the mass values allow for some charge mobility except along a direction perpendicular to the molecular layers of L-asparagine which form the crystal, so anhydrous monoclinic L-asparagine crystals could behave as wide gap semiconductors. Finally, the calculations point to a high degree of optical anisotropy for the absorption and complex dielectric function, with more structured curves for incident light polarized along the 100 and 101 directions.

Zanatta, G.; Gottfried, C. [Departamento de Bioqumica, Universidade Federal do Rio Grande do Sul, 90035-003 Porto Alegre-RS (Brazil)] [Departamento de Bioqumica, Universidade Federal do Rio Grande do Sul, 90035-003 Porto Alegre-RS (Brazil); Silva, A. M. [Universidade Estadual do Piau, 64260-000 Piripiri-Pi (Brazil)] [Universidade Estadual do Piau, 64260-000 Piripiri-Pi (Brazil); Caetano, E. W. S., E-mail: ewcaetano@gmail.com [Instituto de Educao, Cincia e Tecnologia do Cear, 60040-531 Fortaleza-CE (Brazil)] [Instituto de Educao, Cincia e Tecnologia do Cear, 60040-531 Fortaleza-CE (Brazil); Sales, F. A. M.; Freire, V. N. [Departamento de Fsica, Universidade Federal do Cear, Caixa Postal 6030, 60455-760 Fortaleza-CE (Brazil)] [Departamento de Fsica, Universidade Federal do Cear, Caixa Postal 6030, 60455-760 Fortaleza-CE (Brazil)

2014-03-28T23:59:59.000Z

445

Design of a high power density, permanent magnet, axial gap dc motor  

SciTech Connect (OSTI)

In the design of drive motors for undersea vehicles, the premium placed on noise suppression suggests the use of a brush-commutated dc motor. The additional constraints of weight and volume, as well as unusual configuration, presents the axial air-gap configuration, with a permanent magnet field, as a viable candidate. In such a configuration the design of the brushes and commutator and the resulting structure becomes critical. The report describes a novel solution to this problem. The basic motor consists of two discs containing permanent magnets on either side of a magnetic structure containing the copper windings. An advantage of this motor concept is that copper cooling may easily be accomplished through the use of liquid circulating through the stator windings. The role of field and armature in a conventional disc motor configuration are reversed. The two discs containing the permanent magnets are rotating. The brushes are on the discs. The magnetic structure with the coils is stationary. The commutator bars are imbedded in the stationary member. Input power is supplied to the brushes through a brush-and-slip ring assembly. An electromagnetic design analysis for a 92 ft-lb, 700 rpm motor was performed. A finite element analysis has been conducted and the results show that magnetic saturation is not a limiting factor in this design. The motor torque is achievable within weight and volume constraints. 9 figs., 1 tab.

Hawsey, R.A.; Daniel, D.S.; Thomas, R.J. (Oak Ridge National Lab., TN (USA)); Bailey, J.M. (Tennessee Univ., Knoxville, TN (USA))

1990-01-01T23:59:59.000Z

446

Results of two LANL [beta]=0.175, 350-MHZ, 2-GAP spoke cavities  

SciTech Connect (OSTI)

Two {beta} = 0.175, 350 MHz, 2-gap superconducting (SC) spoke cavities were fabricated in industry under the Advanced Accelerator Applications (AAA) project for the transmutation of nuclear waste. These cavities are promising candidates for the accelerating structures between a RFQ and the elliptical SC cavities for proton and heavy ion linacs. Since their delivery in July 2002, they have been tested in terms of mechanical properties, low-temperature performance, i.e., Qo-Eaccc urves at 4 K and 2 K, surface resistance dependence on temperature and for multipacting (MP). The two cavities achieved accelerating fields of 13.5 MV/m and 13.0 MV/m as compared to the required field of 7.5 MV/m with enough margin for the quality factor. These cavities seem to need more time to condition away MP than elliptical cavities, but MP does not occur once the cavity is conditioned and kept at 4 K. The length of the 103 mm-diameter nominal coupler port was found to be too short for the penetrating field.

Tajima, T. (Tsuyoshi); Edwards, R. L. (Randall L.); Gentzlinger, R.C. (Robert C.); Krawczyk, F. L. (Frank L.); Ledford, J. E. (John E.); Liu, Jianfei; Montoya, D. I. (Debbie I.); Roybal, R. J. (Raymond J.(Ray); Schrage, D. L. (Dale L.); Shapiro, A. H. (Alan H.); Barni, D.; Bosotti, A.; Pagani, C. D.

2003-01-01T23:59:59.000Z

447

Of Horseshoes and Heliotropes: Dynamics of Dust in the Encke Gap  

E-Print Network [OSTI]

The Encke Gap is a 320-km-wide opening in Saturn's outer A ring that contains the orbit of the small moon Pan and an array of dusty features composed of particles less than 100 microns across. In particular, there are three narrow ringlets in this region that are not longitudinally homogeneous, but instead contain series of bright clumps. Using images obtained by the Cassini spacecraft, we track the motions of these clumps and demonstrate that they do not follow the predicted trajectories of isolated ring particles moving under the influence of Saturn's and Pan's gravitational fields. We also examine the orbital properties of these ringlets by comparing images taken at different longitudes and times. We find evidence that the orbits of these particles have forced eccentricities induced by solar radiation pressure. In addition, the mean radial positions of the particles in these ringlets appear to vary with local co-rotating longitude, perhaps due to the combined action of drag forces, gravitational perturbati...

Hedman, M M; Hamilton, D P; Showalter, M R

2013-01-01T23:59:59.000Z

448

Size-Dependent Optical and Electrochemical Energy Gaps Comparison of CdSe Nanolusters Meghan B. Teunis, Katie N. Lawrence, and Sukanta Dolai  

E-Print Network [OSTI]

Size-Dependent Optical and Electrochemical Energy Gaps Comparison of CdSe Nanolusters Meghan B, a comparison of the size dependent optical properties and electrochemical energy gaps of poly(ethylene glycol-dependent optical and electronic properties of semiconductor nanocrystals have made them the focus of much research

Zhou, Yaoqi

449

Anchoring energy and cell gap effects on liquid crystal response time Xiangyi Nie, Ruibo Lu, Haiqing Xianyu, Thomas X. Wu, and Shin-Tson Wua  

E-Print Network [OSTI]

assumption is that the anchoring energy on LC-substrate surfaces is strong W . However, some LC devices haveAnchoring energy and cell gap effects on liquid crystal response time Xiangyi Nie, Ruibo Lu 2007 The anchoring energy and cell gap effects on liquid crystal response time 0 is analyzed

Wu, Shin-Tson

450

Electronic and structural properties of vacancies on and below the GaP,,110... surface G. Schwarz, A. Kley, J. Neugebauer, and M. Scheffler  

E-Print Network [OSTI]

Electronic and structural properties of vacancies on and below the GaP,,110... surface G. Schwarz and electronic structure of neutral surface and subsurface vacancies at the GaP 110 surface. The cation as well as the anion surface vacancy show a pronounced inward relaxation of the three nearest-neighbor atoms towards

451

Modeling of Gap Closure in Uranium-Zirconium Alloy Metal Fuel - A Test Problem  

SciTech Connect (OSTI)

Uranium based binary and ternary alloy fuel is a possible candidate for advanced fast spectrum reactors with long refueling intervals and reduced liner heat rating [1]. An important metal fuel issue that can impact the fuel performance is the fuel-cladding gap closure, and fuel axial growth. The dimensional change in the fuel during irradiation is due to a superposition of the thermal expansion of the fuel due to heating, volumetric changes due to possible phase transformations that occur during heating and the swelling due to fission gas retention. The volumetric changes due to phase transformation depend both on the thermodynamics of the alloy system and the kinetics of phase change reactions that occur at the operating temperature. The nucleation and growth of fission gas bubbles that contributes to fuel swelling is also influenced by the local fuel chemistry and the microstructure. Once the fuel expands and contacts the clad, expansion in the radial direction is constrained by the clad, and the overall deformation of the fuel clad assembly depends upon the dynamics of the contact problem. The neutronics portion of the problem is also inherently coupled with microstructural evolution in terms of constituent redistribution and phase transformation. Because of the complex nature of the problem, a series of test problems have been defined with increasing complexity with the objective of capturing the fuel-clad interaction in complex fuels subjected to a wide range of irradiation and temperature conditions. The abstract, if short, is inserted here before the introduction section. If the abstract is long, it should be inserted with the front material and page numbered as such, then this page would begin with the introduction section.

Simunovic, Srdjan [ORNL; Ott, Larry J [ORNL; Gorti, Sarma B [ORNL; Nukala, Phani K [ORNL; Radhakrishnan, Balasubramaniam [ORNL; Turner, John A [ORNL

2009-10-01T23:59:59.000Z

452

X-Band Photonic Band-Gap Accelerator Structure Breakdown Experiment  

SciTech Connect (OSTI)

In order to understand the performance of photonic band-gap (PBG) structures under realistic high gradient, high power, high repetition rate operation, a PBG accelerator structure was designed and tested at X band (11.424 GHz). The structure consisted of a single test cell with matching cells before and after the structure. The design followed principles previously established in testing a series of conventional pillbox structures. The PBG structure was tested at an accelerating gradient of 65 MV/m yielding a breakdown rate of two breakdowns per hour at 60 Hz. An accelerating gradient above 110 MV/m was demonstrated at a higher breakdown rate. Significant pulsed heating occurred on the surface of the inner rods of the PBG structure, with a temperature rise of 85 K estimated when operating in 100 ns pulses at a gradient of 100 MV/m and a surface magnetic field of 890 kA/m. A temperature rise of up to 250 K was estimated for some shots. The iris surfaces, the location of peak electric field, surprisingly had no damage, but the inner rods, the location of the peak magnetic fields and a large temperature rise, had significant damage. Breakdown in accelerator structures is generally understood in terms of electric field effects. These PBG structure results highlight the unexpected role of magnetic fields in breakdown. The hypothesis is presented that the moderate level electric field on the inner rods, about 14 MV/m, is enhanced at small tips and projections caused by pulsed heating, leading to breakdown. Future PBG structures should be built to minimize pulsed surface heating and temperature rise.

Marsh, Roark A.; /MIT /MIT /NIFS, Gifu /JAERI, Kyoto /LLNL, Livermore; Shapiro, Michael A.; Temkin, Richard J.; /MIT; Dolgashev, Valery A.; Laurent, Lisa L.; Lewandowski, James R.; Yeremian, A.Dian; Tantawi, Sami G.; /SLAC

2012-06-11T23:59:59.000Z

453

Operation of a test bed axial-gap brushless dc rotor with a superconducting stator  

SciTech Connect (OSTI)

A variable-speed axial-gap motor with a stator consisting of four liquid helium cooled superconducting electromagnets (two pole pairs) was built and proof tested up to 608 rpm in November 1990 as a tool for joint industry-laboratory evaluation of coils fabricated from high-temperature oxide superconductors. A second rotor was fabricated with improved materia winding configuration, and wire type, and the drive system was modified to eliminate current spiking. The modified motor was characterized to design speed, 188 rad/s (1800 rpm), to acquire a performance baseline for future comparison with that of high-temperature superconducting (HIS) wire. As it becomes commercially available, HTS wire will replace the low-temperature electromagnet wire in a stator modified to control wire temperatures between 4 K and 77 K. Measurements of the superconducting electromagnetic field and locked rotor torque as functions of cryocurrent and dc current through two phases of the rotor, respectively, provided data to estimate power that could be developed by the rotor. Back emf and parasitic mechanical and electromagnetic drag torques were measured as functions of angular velocity to calculate actual rotor power developed and to quantify losses, which reduce the motor`s efficiency. A detailed measurement of motor power at design speed confirmed the developed power equation. When subsequently operated at the 33-A maximum available rotor current, the motor delivered 15.3 kill (20.5 hp) to the load. In a final test, the cryostat was operated at 2500 A, 200 A below its critical current. At rotor design current of 60 A and 2500 A stator current, the extrapolated developed power would be 44.2 kill (59.2 hp) with 94% efficiency.

McKeever, J.W.; Sohns, C.W.; Schwenterly, S.W.; Young, R.W. Sr.; Campbell, V.W.; Hickey, M.H.; Ott, G.W. [Oak Ridge National Lab., TN (United States); Bailey, J.M. [Tennessee Univ., Knoxville, TN (United States)

1993-08-01T23:59:59.000Z

454

June 11, 2009, HSS/Union Task Meeting on 2009 HSS/Union Task Progress - Assessing Training Gaps in ORPS  

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

Training Gaps Using DOE's Training Gaps Using DOE's Occurrence Reporting and Processing System (ORPS) HSS/Union Meeting June 11, 2009 2 Highlights Training is a contributing cause in about 15% of DOE operational events (about 150 per year) * Poor management practices are the most common training cause * Poor training programs are next (cited about 50 times per year) Of ORPS-reported injuries, about 17% had training as a contributing cause (101 of 594) * About 30 per year HS-30 will develop a report with a few more details * We will offer a collaborative session to discuss the results more fully and then provide a final product on the outreach web site 3 Training-Related ORPS Events January 1, 2006 to May 31, 2009 (~3.5 years) 186 472 Total ORPS: 4,525 Total ORPS with at least 1 cause listed: 3,031

455

Photonic band gap in an imperfect atomic diamond lattice: Penetration depth and effects of finite size and vacancies  

Science Journals Connector (OSTI)

We study the effects of finite size and of vacancies on the photonic band gap recently predicted for an atomic diamond lattice. Close to a Jg=0?Je=1 atomic transition, and for atomic lattices containing up to N?3104 atoms, we show how the density of states can be affected by both the shape of the system and the possible presence of a fraction of unoccupied lattice sites. We numerically predict and theoretically explain the presence of shape-induced border states and of vacancy-induced localized states appearing in the gap. We also investigate the penetration depth of the electromagnetic field which we compare to the case of an infinite system.

Mauro Antezza and Yvan Castin

2013-09-25T23:59:59.000Z

456

In-Line Post-Process Scribing for Reducing Cell to Module Efficiency Gap in Monolithic Thin Film Photovoltaics  

E-Print Network [OSTI]

The gap between cell and module efficiency is a major challenge for all photovoltaic (PV) technologies. For monolithic thin film PV modules, a significant fraction of this gap has been attributed to parasitic shunts, and other defects, distributed across the module. In this paper, we show that it is possible to contain or isolate these shunt defects, using the state of the art laser scribing processes, after the fabrication of the series connected module is finished. We discuss three possible alternatives, and quantify the performance gains for each technique. We demonstrate that using these techniques, it is possible to recover up to 50% of the power lost to parasitic shunts, which results in 1-2% (absolute) increase in module efficiencies for typical thin film PV technologies.

Dongaonkar, Sourabh

2013-01-01T23:59:59.000Z

457

Exchange interaction and rashba spin splitting effects in electron spin resonance in narrow-gap quantum wells  

SciTech Connect (OSTI)

We report a study of electron spin resonance (ESR) in a perpendicular magnetic field in n-type narrow-gap quantum well (QW) heterostructures. Using the Hartree-Fock approximation, based on the 88 k?p Hamiltonian, the many-body corrections to the ESR energy are found to be nonzero in symmetric and asymmetric narrow-gap QWs. We demonstrate a significant enhancement of the ESR energy in asymmetric QWs, induced by the Rashba spin splitting and exchange interaction, as well as the exchange-induced enhancement of the ESR energy in symmetric QWs. The ESR energies estimated for 2DEG in InAs/AlSb QWs are compared with experimental results in weak magnetic fields.

Krishtopenko, S. S. [Institute for Physics of Microstructures RAS, GSP-105, 603950, Nizhny Novgorod, Russia and Laboratoire National des Champs Magntiques Intenses (LNCMI-T), CNRS UPR 3228 Universit de Toulouse, 143 Avenue de Rangueil, F-31400 Toulouse (France); Malyzhenkov, A. V.; Kalinin, K. P.; Ikonnikov, A. V.; Maremyanin, K. V.; Gavrilenko, V. I. [Institute for Physics of Microstructures RAS, GSP-105, 603950, Nizhny Novgorod (Russian Federation); Goiran, M. [Laboratoire National des Champs Magntiques Intenses (LNCMI-T), CNRS UPR 3228 Universit de Toulouse, 143 Avenue de Rangueil, F-31400 Toulouse (France)

2013-12-04T23:59:59.000Z

458

Large half-metallic gap in ferromagnetic semi-Heusler alloys CoCrP and CoCrAs  

SciTech Connect (OSTI)

We investigate the electronic structure and magnetism of semi-Heusler alloys CoCrP and CoCrAs using the full-potential linearized augmented plane wave method. The calculations reveal that CoCrP and CoCrAs are half-metallic (HM) ferromagnets with the same magnetic moment of 2.00 {mu}{sub B} per formula unit. Both alloys have large half-metallic gaps (up to 0.50 eV) and wide band gaps (above 1 eV). The half-metallicity of CoCrP and CoCrAs can be retained even when their lattice constants are changed by -4.8% to 6.6% and -7.7% to 4.5%, respectively. The two alloys show great promise in the applications of spin valve and magnetic tunnel junction.

Yao Zhongyu [School of Physics and Electronic Engineering, Hainan Normal University, Haikou 571158 (China); Zhang, Y. S. [School of Physics, Huazhong University of Science and Technology, Wuhan 430074 (China); Yao, K. L. [School of Physics, Huazhong University of Science and Technology, Wuhan 430074 (China); International Center of Materials Physics, Chinese Academy of Science, Shenyang 110015 (China)

2012-08-06T23:59:59.000Z

459

Electronic structure of Pt based topological Heusler compounds with C1{sub b} structure and 'zero band gap'  

SciTech Connect (OSTI)

Besides of their well-known wide range of properties it was recently shown that many of the heavy Heusler semiconductors with 1:1:1 composition and C1{sub b} structure exhibit a zero band gap behavior and are topological insulators induced by their inverted band structure. In the present study, the electronic structure of the Heusler compounds PtYSb and PtLaBi was investigated by bulk sensitive hard x-ray photoelectron spectroscopy. The measured valence band spectra are clearly resolved and in well agreement to the first-principles calculations of the electronic structure of the compounds. The experimental results give clear evidence for the zero band gap state.

Ouardi, Siham; Shekhar, Chandra; Fecher, Gerhard H.; Kozina, Xeniya; Stryganyuk, Gregory; Felser, Claudia [Institut fuer Anorganische Chemie und Analytische Chemie, Johannes Gutenberg-Universitaet, D-55099 Mainz (Germany); Ueda, Shigenori; Kobayashi, Keisuke [NIMS Beamline Station at SPring-8, National Institute for Materials Science, Hyogo 679-5148 (Japan)

2011-05-23T23:59:59.000Z

460

How to Bridge the Culture Gap: How John Deweys Aesthetics May Benefit the Local Church  

E-Print Network [OSTI]

: Philosophy iii ABSTRACT How to Bridge the Culture Gap: How John Dewey?s Aesthetics May Benefit the Local Church. (December 2010) Paul Russell Shockley, B.A., Stephen F. Austin State University; Th.M., Dallas Theological Seminary; M... churches in a better position to ?to take in? the moments and enjoy immediate 5 John Dewey, ?From Absolutism to Experimentalism? in On Experience, Nature, and Freedom, ed. Richard Bernstein (Indianapolis...

Shockley, Paul Russell

2012-02-14T23:59:59.000Z

Note: This page contains sample records for the topic "gap amor stadium" 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

Luminescence studies of localized gap states in colloidal ZnS nanocrystals D. Denzler, M. Olschewski, and K. Sattlera)  

E-Print Network [OSTI]

form are the II-VI semi- conductor compounds CdS and ZnS.14 ZnS has a band gap of 3.6 eV at 300 K spectra show a broad ultraviolet peak at around 420 nm. ZnS can be doped with Mn very easily, where few Mn atoms substitute for Zn atoms.18 This doping causes a visible orange luminescence at about 590 nm. Both

Sattler, Klaus

462

The properties of photonic band gaps for three-dimensional plasma photonic crystals in a diamond structure  

SciTech Connect (OSTI)

In this paper, the properties of photonic band gaps (PBGs) for two types of three-dimensional plasma photonic crystals (PPCs) composed of isotropic dielectric and unmagnetized plasma with diamond lattices are theoretically investigated for electromagnetic waves based on a modified plane wave expansion method. The equations for type-1 structure are theoretically deduced, which depend on the diamond lattices realization (dielectric spheres immersed in plasma background). The influences of dielectric constant of dielectric, plasma collision frequency, filling factor, and plasma frequency on PBGs are investigated, respectively, and some corresponding physical explanations and the possible methods to realize the three-dimensional PPCs in experiments are also given. From the numerical results, it has been shown that not only the locations but also the gap/midgap ratios of the PBGs for two types of PPCs can be tuned by plasma frequency, filling factor, and the relative dielectric constant, respectively. However, the plasma collision frequency has no effect on the frequency ranges and gap/midgap ratios of the PBGs for two types of PPCs.

Zhang Haifeng [College of Electronic and Information Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016 (China); Nanjing Artillery Academy, Nanjing 211132 (China); Liu Shaobin [College of Electronic and Information Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016 (China); State Key Laboratory of Millimeter Waves of Southeast University, Nanjing Jiangsu 210096 (China); Kong Xiangkun, Chenchen; Bian Borui [College of Electronic and Information Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016 (China)

2013-04-15T23:59:59.000Z

463

The effects of gaps between bridge foils and PETN as a function of PETN density and specific surface area  

SciTech Connect (OSTI)

X-ray computer tomography scans of artificially aged PETN seem to indicate shrinkage of material and, by extension, an increased high explosive density, resulting in potential separation of the HE from the header/bridge foil. We have investigated these phenomena by mimicking this shrinkage of material (load density). Thus, we have evaluated various induced gaps between the exploding bridge foil and the PETN in our custom detonators by changing both specific surface area - recognizing crystal morphology changes - and load density. Analyses for these data include absolute function time relative to bridge burst and careful evaluation of the detonation wave breakout curvature, using an electronic streak camera for wave capture, in cases where the bridge foil (exploding bridge wire - EBW style) initiation successfully traverses the gap (a 'go' condition). In addition, a fireset with subnanosecond trigger jitter was used for these tests allowing easy comparison of relative 'go' function times. Using the same test matrix and fine-tuning the induced gap, a second, smaller subset of these experiments were performed to provide additional insight as to what conditions we might expect detonator anomalies/failure.

Phillips, D; Roeske, F; Burnham, A

2007-06-26T23:59:59.000Z

464

FOR STUDENT-ATTENDED EVENTS FOR NON-STUDENT UF EVENTS Return to: Sylvia Parker at 202 Peabody Hall or FAX to 392-5566 Return to: Office of the Vice President for Business Affairs  

E-Print Network [OSTI]

Griffin Stadium: Bull Gator Level _____ Friends of Music Room in University Auditorium _____ Ben Hill Griffin Stadium: Champion Club Lounge _____ _____ Ben Hill Griffin Stadium: Gator Room _____ Housing

Roy, Subrata

465

How Can You Improve Overall Air Quality in Your Home?  

E-Print Network [OSTI]

. · Allergicreactionscanincludearunnyorstuffynose, coughing,puffyeyes,itching,hives,orarash.Amore seriousreactioncouldbeanasthmaattackorswellingof

Liskiewicz, Maciej

466

Why E-government Usage Lags Behind: Explaining the Gap Between Potential and Actual Usage of Electronic Public Services in the Netherlands  

Science Journals Connector (OSTI)

Most of the EU-15 countries illustrate a gap between potential usage and actual usage of electronic public services. Using a model ... the case of current Dutch electronic governmental service usage. Motivational...

Alexander van Deursen; Jan van Dijk; Wolfgang Ebbers

2006-01-01T23:59:59.000Z

467

Of Horseshoes and Heliotropes: Dynamics of Dust in the Encke Gap M.M. Hedmana,, J.A. Burnsb, D.P. Hamiltonc, M.R. Showalterd  

E-Print Network [OSTI]

Of Horseshoes and Heliotropes: Dynamics of Dust in the Encke Gap M.M. Hedmana,, J.A. Burnsb, D demonstrates "heliotropic" behavior: its geometric center is displaced away from Saturn's center towards

Hamilton, Douglas P.

468

Influence of the longitudinal magnetic field in the accelerating gap on the limiting parameters of a plasma electron source operating in the forevacuum pressure range  

Science Journals Connector (OSTI)

Results are presented from experimental studies of the influence of the longitudinal magnetic field in the accelerating gap on the emission current, accelerating voltage, and maximum gas pressure in a plasma electron

I. S. Zhirkov; V. A. Burdovitsin; E. M. Oks

2007-09-01T23:59:59.000Z

469

Analytical descriptions of the band structure of direct-band-gap zinc-blende-structure semiconductors in the k?p Kane model  

Science Journals Connector (OSTI)

In the framework of the well-known k?p Kane band theory, accurate analytical approximations of conduction- and valence-band dispersion of direct-band-gap zinc-blende-structure semiconductors are derived when the spin-orbit-splitting energy does not exceed the band-gap energy. These approximations include the interactions with the remote bands. The expressions of the eigenfunctions are also obtained. The present analysis elucidates and unifies previous analytical band descriptions.

H.-J. Drouhin and J. Peretti

1991-10-15T23:59:59.000Z

470

A 10-year content analysis to assess research theme areas in agricultural education: gap analysis of future research priorities in the discipline.  

E-Print Network [OSTI]

A 10?YEAR CONTENT ANALYSIS TO ASSESS RESEARCH THEME AREAS IN AGRICULTURAL EDUCATION: GAP ANALYSIS OF FUTURE RESEARCH PRIORITIES IN THE DISCIPLINE A Dissertation by LESLIE DAWN JENKINS EDGAR Submitted to the Office of Graduate... IN AGRICULTURAL EDUCATION: GAP ANALYSIS OF FUTURE RESEARCH PRIORITIES IN THE DISCIPLINE A Dissertation by LESLIE DAWN JENKINS EDGAR Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements...

Edgar, Leslie Dawn

2009-05-15T23:59:59.000Z

471

Lattice-engineered Si{sub 1-x}Ge{sub x}-buffer on Si(001) for GaP integration  

SciTech Connect (OSTI)

We report a detailed structure and defect characterization study on gallium phosphide (GaP) layers integrated on silicon (Si) (001) via silicon-germanium (SiGe) buffer layers. The presented approach uses an almost fully relaxed SiGe buffer heterostructure of only 400?nm thickness whose in-plane lattice constant is matched to GaPnot at room but at GaP deposition temperature. Single crystalline, pseudomorphic 270?nm thick GaP is successfully grown by metalorganic chemical vapour deposition on a 400?nm Si{sub 0.85}Ge{sub 0.15}/Si(001) heterosystem, but carries a 0.08% tensile strain after cooling down to room temperature due to the bigger thermal expansion coefficient of GaP with respect to Si. Transmission electron microscopy (TEM) studies confirm the absence of misfit dislocations in the pseudomorphic GaP film but growth defects (e.g., stacking faults, microtwins, etc.) especially at the GaP/SiGe interface region are detected. We interpret these growth defects as a residue of the initial 3D island coalescence phase of the GaP film on the SiGe buffer. TEM-energy-dispersive x-ray spectroscopy studies reveal that these defects are often correlated with stoichiometric inhomogeneities in the GaP film. Time-of-flight Secondary ion mass spectrometry detects sharp heterointerfaces between GaP and SiGe films with a minor level of Ga diffusion into the SiGe buffer.

Skibitzki, Oliver, E-mail: skibitzki@ihp-microelectronics.com; Zaumseil, Peter; Yamamoto, Yuji; Andreas Schubert, Markus [IHP, Im Technologiepark 25, 15236 Frankfurt (Oder) (Germany); Paszuk, Agnieszka; Hannappel, Thomas [Technische Universitt Ilmenau, Gustav-Kirchhoff-Str. 5, 98693 Ilmenau (Germany); Hatami, Fariba; Ted Masselink, W. [Institut fr Physik, Humboldt Universitt zu Berlin, Newtonstrasse 15, 12489 Berlin (Germany); Trampert, Achim [Paul Drude Institut fr Festkrperelektronik, Hausvogteiplatz 5-7, 10117 Berlin (Germany); Tillack, Bernd [IHP, Im Technologiepark 25, 15236 Frankfurt (Oder) (Germany); Technische Universitt Berlin, HFT4, Einsteinufer 25, 10587 Berlin (Germany); Schroeder, Thomas [IHP, Im Technologiepark 25, 15236 Frankfurt (Oder) (Germany); Brandenburgische Technische Universitt, Konrad-Zuse Str. 1, 03046 Cottbus (Germany)

2014-03-14T23:59:59.000Z

472

CEC'99 Amor & Anumba Page 1 of 12 A SURVEY AND ANALYSIS OF INTEGRATED  

E-Print Network [OSTI]

such as the application area, development environment, modelling approaches used, reusability, hardware and software and Dr C. J. Anumba2 ABSTRACT This paper is concerned with the development of an integrated project approaches to its development. A detailed survey and analysis of recent UK projects that have sought

Amor, Robert

473

Automated classification of A/E/C web content R. Amor & K. Xu  

E-Print Network [OSTI]

purely on the search terms entered by the user. This means that the web pages which are found are often search en- gine. The premise behind this approach is that it is possible to accurately identify then a user searching for content in a particular area (e.g. by specifying a classification code

Amor, Robert

474

E-Print Network 3.0 - amor se encontram Sample Search Results  

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

I j encontra-se plantada... intervalo I 0; 4 2; 1; 6 26; R 2 . A horta encontra-se sub-dividida em quatro rectangulos mais... 26; R 2 de12;nido por E ...

475

E-Print Network 3.0 - amor viva primera Sample Search Results  

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

an seora, los... , no puede faltar en ser tambin de las primeras en celebrar esta fiesta de la raza con que Espaa y sus... constituyentes inaugurales o en la...

476

Concurrent Engineering Support with an Advanced DMS Mike Clift and Robert Amor, Building Research Establishment, UK  

E-Print Network [OSTI]

and also through an open interface to all services provided to the project. This allows controlled access the flow of control in the running project. With the ToCEE approach of a totally generic document integrated system in which the scope needs to be extended to documents. 2.1 Electronic Document Management

Amor, Robert

477

Setting the most robust effluent level under severe uncertainty: Application of information-gap decision theory to chemical management  

Science Journals Connector (OSTI)

Abstract Decisions in ecological risk management for chemical substances must be made based on incomplete information due to uncertainties. To protect the ecosystems from the adverse effect of chemicals, a precautionary approach is often taken. The precautionary approach, which is based on conservative assumptions about the risks of chemical substances, can be applied selecting management models and data. This approach can lead to an adequate margin of safety for ecosystems by reducing exposure to harmful substances, either by reducing the use of target chemicals or putting in place strict water quality criteria. However, the reduction of chemical use or effluent concentrations typically entails a financial burden. The cost effectiveness of the precautionary approach may be small. Hence, we need to develop a formulaic methodology in chemical risk management that can sufficiently protect ecosystems in a cost-effective way, even when we do not have sufficient information for chemical management. Information-gap decision theory can provide the formulaic methodology. Information-gap decision theory determines which action is the most robust to uncertainty by guaranteeing an acceptable outcome under the largest degree of uncertainty without requiring information about the extent of parameter uncertainty at the outset. In this paper, we illustrate the application of information-gap decision theory to derive a framework for setting effluent limits of pollutants for point sources under uncertainty. Our application incorporates a cost for reduction in pollutant emission and a cost to wildlife species affected by the pollutant. Our framework enables us to settle upon actions to deal with severe uncertainty in ecological risk management of chemicals.

Hiroyuki Yokomizo; Wataru Naito; Yoshinari Tanaka; Masashi Kamo

2013-01-01T23:59:59.000Z

478

Emission of Band-Gap-Energy Positrons from Surfaces of LiF, NaF, and Other Ionic Crystals  

Science Journals Connector (OSTI)

Energetic positrons implanted into various ionic crystal surfaces are reemitted with a maximum kinetic energy (14.7 0.7 eV for LiF) near the band-gap energy. The evidence suggests that, at least for LiF and NaF, the emission originates from bulk-formed positronium (Ps) breaking up after diffusing to the surface. In our model, the positrons are Auger emitted when the Ps electrons recombine with holes at the surface, and the spectrum of positron energies thus reflects the density of empty surface states.

A. P. Mills; Jr. and William S. Crane

1984-11-26T23:59:59.000Z

479

Diagnosis and Isolation of Air Gap Eccentricities in Closed-loop Controlled Doubly-Fed Induction Generators  

E-Print Network [OSTI]

N L g P ? ? ? ? ? ? ? ? ? (2.6) 17 ? ? 2 coso tab r rl N L g P ? ? ?? ?? ? ? ? ? (2.7) ?0 = permeability of air g = air gap length l = length of stator/rotor r = radius of stator/rotor Nt = number of turns of windings....9) The flux equations for the three stator and three rotor windings is given by abcs abcs abcs abcsr abcrL i L i? ? ? (2.10) abcr abcrs abcs abcr abcrL i L i? ? ? (2.11) The inductance matrices are obtained from (2.6) and (2.7) for Ns turns...

Meenakshi Sundaram, Vivek

2012-07-16T23:59:59.000Z

480

Photoacoustic and xerographic investigation of the gap-state structure of a-Se: Comparison with a-Si:H  

Science Journals Connector (OSTI)

The first application of the photoacoustic-spectroscopy (PAS) technique to chalcogenide thin films is reported. The PAS-derived value for the mid-gap density of states for a-Se, 1 1015 cm-3, is found to be in good agreement with xerographic measurements. These results for a-Se are contrasted with PAS data for a series of a-Si:H films made by ion-beam deposition. The PAS defect population for the a-Si:H network semiconductor is shown to be highly compositionally dependent with two identifiable hydrogenation regimes.

G. P. Ceasar; M. Abkowitz; J. W-P. Lin

1984-02-15T23:59:59.000Z

Note: This page contains sample records for the topic "gap amor stadium" 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

Specific features of the temperature dependence of the conduction electron concentration in the narrow-gap and zero-gap states of Cd{sub x}Hg{sub 1-x}Te  

SciTech Connect (OSTI)

Results of studies of the conductivity {sigma} and the Hall coefficient R in the Cd{sub x}Hg{sub 1-x}Te crystals with x = 0.1, 0.12, 0.14, and 0.15 are analyzed in the temperature range T = 4.2-300 K and the magnetic field range B = 0.005-2.22 T. Using data on the R(B) in low and high magnetic fields and the data on {sigma}(T), electron and hole concentrations and mobilities are determined. It is shown that the electron concentration n in the studied samples is almost independent of T in the range 4.2-15 K, while as T increases, it increases according to the law n {proportional_to} T {sup r} (r > 3/2), where r = f(n, T, x). It is found that r varies from 1.7 at x = 0.1 to 3.1 at compositions with x = 0.14 and 0.15. The results for n(T) are compared with theory, taking into account nonparabolicity of the variance law for {epsilon}(T), and with the theory of impurity states in narrow-gap and zero-gap semiconductors. It is shown that the constancy of n(T) up to {approx}15 K and the strong dependence n(T) (r > 3/2) at higher temperatures are caused by the intense ionization of electrons localized at acceptor states.

Aliev, S. A.; Zulfigarov, E. I.; Selim-zade, R. I. [Academy of Sciences of Azerbaijan, Institute of Physics (Azerbaijan)

2012-03-15T23:59:59.000Z

482

Direct measurement of the spin gap in a quasi-one-dimensional clinopyroxene: NaTiSi2O6  

Science Journals Connector (OSTI)

True inorganic spin-Peierls materials are extremely rare, but NaTiSi2O6 was at one time considered to be an ideal candidate owing to its well separated chains of edge-sharing TiO6 octahedra. At low temperatures, this material undergoes a phase transition from C2/c to P1 symmetry, where Ti3+?Ti3+ dimers begin to form within the chains. However, it was quickly realized with magnetic susceptibility that simple spin fluctuations do not progress to the point of enabling such a transition. Since then, considerable experimental and theoretical endeavors have been undertaken to find the true ground state of this system and explain how it manifests. Here, we employ the use of x-ray diffraction, neutron spectroscopy, and magnetic susceptibility to directly and simultaneously measure the symmetry loss, spin singlet-triplet gap, and phonon modes. A gap of 53(3) meV was observed, fit to the magnetic susceptibility, and compared to previous theoretical models to unambiguously assign NaTiSi2O6 as having an orbital-assisted Peierls ground state.

Harlyn J. Silverstein; Alison E. Smith; Cole Mauws; Douglas L. Abernathy; Haidong Zhou; Zhiling Dun; Johan van Lierop; Christopher R. Wiebe

2014-10-13T23:59:59.000Z

483

Tests of the nuclear equation of state and superfluid and superconducting gaps using the Cassiopeia A neutron star  

E-Print Network [OSTI]

The observed rapid cooling of the Cassiopeia A neutron star can be interpreted as being caused by neutron and proton transitions from normal to superfluid and superconducting states in the stellar core. Here we present two new Chandra ACIS-S Graded observations of this neutron star and measurements of the neutron star mass M and radius R found from consistent fitting of both the X-ray spectra and cooling behavior. This comparison is only possible for individual nuclear equations of state. We test phenomenological superfluid and superconducting gap models which mimic many of the known theoretical models against the cooling behavior. Our best-fit solution to the Cassiopeia A data is one in which the (M,R) = (1.43 Msun,12.6 km) neutron star is built with the BSk21 equation of state, strong proton superconductor and moderate neutron triplet superfluid gap models, and a pure iron envelope or a thin carbon layer on top of an iron envelope, although there are still large observational and theoretical uncertainties.

Ho, Wynn C G; Heinke, Craig O; Potekhin, Alexander Y

2014-01-01T23:59:59.000Z

484

Wide-band-gap solar cells with high stabilized performance. Annual subcontract report, July 15, 1994--July 14, 1995  

SciTech Connect (OSTI)

This report describes work performed by Pennsylvania State University in collaboration with the NREL Wide-Band-Gap Team. The goal of this team is to develop a single-junction, wide-gap solar cell with good stabilized parameters. The objectives of the subcontract are to (1) develop a cost-effective amorphous silicon PV technology to foster a viable amorphous silicon PV industry in the US, ensuring that this industry remains a world leader in the a-Si technology; (2) help the US a-Si PV industry achieve the US DOE PV Program FY 1995 milestone of 10% stable efficiency commercial thin-film modules; (3) help the US a-Si PV industry achieve 12% stable efficiency multi-junction a-Si:H modules for large-scale utility use by the year 2005. Issues covered in this report include (1) improved understanding of stability in materials and solar cells, (2) intrinsic materials optimization, (3) solar cells optimized for intrinsic layer performance, (4) p-type layer optimization, (5) top cell interfaces, and (6) solar cell grading.

Wronski, C.R.; Collins, R.W.; Fonash, S.J. [Pennsylvania State Univ., University Park, PA (United States)

1995-11-01T23:59:59.000Z

485

Doping-dependent anisotropic superconducting gap in Na1-?(Fe1-xCox)As from London penetration depth  

SciTech Connect (OSTI)

The London penetration depth was measured in single crystals of self-doped Na1-?FeAs (from under doping to optimal doping, Tc from 14 to 27 K) and electron-doped Na(Fe1-xCox)As with x ranging from undoped, x=0, to overdoped, x=0.1. In all samples, the low-temperature variation of the penetration depth exhibits a power-law dependence, ??(T)=ATn, with the exponent that varies in a domelike fashion from n1.1 in the underdoped, reaching a maximum of n1.9 in the optimally doped, and decreasing again to n1.3 on the overdoped side. While the anisotropy of the gap structure follows a universal domelike evolution, the exponent at optimal doping, n1.9, is lower than in other charge-doped Fe-based superconductors (FeSCs). The full-temperature range superfluid density, ?s(T)=?(0)/?(T)2, at optimal doping is also distinctly different from other charge-doped FeSCs but is similar to isovalently substituted BaFe2(As1-xPx)2, believed to be a nodal pnictide at optimal doping. These results suggest that the superconducting gap in Na(Fe1-xCox)As is highly anisotropic even at optimal doping.

Cho, Kyuil; Tanatar, Makariy A.; Spyrison, Nicholas; Kim, Hyunsoo; Song, Y.; Dai, Pengcheng; Zhang, C.L.; Prozorov, Ruslan

2012-07-30T23:59:59.000Z

486

X-ray emission from z pinches at 107 A: Current scaling, gap closure, and shot-to-shot fluctuations  

Science Journals Connector (OSTI)

We have measured the x-ray power and energy radiated by a tungsten-wire-array z pinch as a function of the peak pinch current and the width of the anode-cathode gap at the base of the pinch. The measurements were performed at 13- and 19-MA currents and 1-, 2-, 3-, and 4-mm gaps. The wire material, number of wires, wire-array diameter, wire-array length, wire-array-electrode design, normalized-pinch-current time history, implosion time, and diagnostic package were held constant for the experiments. To keep the implosion time constant, the mass of the array was increased as I2 (i.e., the diameter of each wire was increased as I), where I is the peak pinch current. At 19 MA, the mass of the 300-wire 20-mm-diam 10-mm-length array was 5.9 mg. For the configuration studied, we find that to eliminate the effects of gap closure on the radiated energy, the width of the gap must be increased approximately as I. For shots unaffected by gap closure, we find that the peak radiated x-ray power Pr?I1.240.18, the total radiated x-ray energy Er?I1.730.18, the x-ray-power rise time ?r?I0.390.34, and the x-ray-power pulse width ?w?I0.450.17. Calculations performed with a time-dependent model of an optically thick pinch at stagnation demonstrate that the internal energy and radiative opacity of the pinch are not responsible for the observed subquadratic power scaling. Heuristic wire-ablation arguments suggest that quadratic power scaling will be achieved if the implosion time ?i is scaled as I-1/3. The measured 1? shot-to-shot fluctuations in Pr, Er, ?r, ?w, and ?i are approximately 12%, 9%, 26%, 9%, and 2%, respectively, assuming that the fluctuations are independent of I. These variations are for one-half of the pinch. If the half observed radiates in a manner that is statistically independent of the other half, the variations are a factor of 21/2 less for the entire pinch. We calculate the effect that shot-to-shot fluctuations of a single pinch would have on the shot-success probability of the double-pinch inertial-confinement-fusion driver proposed by Hammer et al. [Phys. Plasmas 6, 2129 (1999)]. We find that on a given shot, the probability that two independent pinches would radiate the same peak power to within a factor of 1? (where 0thermonuclear-fusion experiments, ? must be ~90%. The observed (12/21/2)%=8.5% fluctuation in Pr would provide adequate symmetry on 44% of the shots. We propose that three-dimensional radiative-magnetohydrodynamic simulations be performed to quantify the sensitivity of the x-ray emission to various initial conditions, and to determine whether an imploding z pinch is a spatiotemporal chaotic system.

W. A. Stygar et al.

2004-04-14T23:59:59.000Z

487

Composition and temperature-induced effects on the phonon spectra of narrow-band-gap Hg1-xCdxTe  

Science Journals Connector (OSTI)

Compositional and temperature-dependent Raman and infrared spectroscopies on the narrow-band-gap II-VI alloy, Hg1-xCdxTe (0?x?0.29), are reported in this paper. Raman measurements over this composition range confirm the two-mode behavior of the optical phonons in the alloy, with the frequency positions exhibiting a monotonic change with the alloy composition x. A resonant enhancement of the HgTe-like forbidden longitudinal-optic mode is observed near the E1 band gap of the alloy. Alloy induced perturbations on the electronic states lead to a smearing and a weakening of the resonance with increasing alloy composition. The optical phonons in this small band-gap alloy exhibit anomalous frequency shifts as a function of temperature vis--vis normal wide-band-gap semiconductors. This anomaly is attributed to the strong electron-phonon interaction in narrow-band-gap systems, which overshadows the dominant anharmonic (phonon-phonon) interaction in usual semiconductors. A detailed compositional dependent second-order Raman spectra is also reported.

Shyama Rath, K. P. Jain, S. C. Abbi, C. Julien, and M. Balkanski

1995-12-15T23:59:59.000Z

488

LS-266 OPTIMIZATION OF FOUR-BUTTON BEAM POSITION MONITOR CONFIGURATION FOR SMALL-GAP VACUUM CHAMBERS  

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

LS-266 LS-266 OPTIMIZATION OF FOUR-BUTTON BEAM POSITION MONITOR CONFIGURATION FOR SMALL-GAP VACUUM CHAMBERS S. H. Kim March 27, 1998 Summary - Induced charges on a four-button beam position monitor (BPM) system attached on a beam chamber of narrow rectangular cross sections are calculated as a 2-D electrostatic problem of image charges. The calculation shows that for a narrow chamber of width/height (2w/2h) >> 1, over 90% of the induced charges are distributed within a distance of 2h from the charged beam position in the direction of the chamber width. Therefore, a four-button system with a button diameter of (2 ~ 2.5)h and no button offset from the beam position is the most efficient configuration. The four-button BPMs used for 8-mm and 5-mm chambers in the APS have relatively low sensitivities because the button locations are outside

489

WORKSHOP REPORT: Trucks and Heavy-Duty Vehicles Technical Requirements and Gaps for Lightweight and Propulsion Materials  

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

VEHICLE TECHNOLOGIES OFFICE VEHICLE TECHNOLOGIES OFFICE WORKSHOP REPORT: Trucks and Heavy-Duty Vehicles Technical Requirements and Gaps for Lightweight and Propulsion Materials February 2013 FINAL REPORT 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 responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise,

490

Evidence of an Energy-Management Gap in U.S. manufacturing: Spillovers from firm management practices to energy efficiency  

Science Journals Connector (OSTI)

Abstract In this paper we merge a well-cited survey of firm management practices into confidential plant level U.S. Census manufacturing data to examine whether generic, i.e. non-energy specific, firm management practices, spillover to enhance energy efficiency in the United States. For U.S. manufacturing plants we find this relationship to be more nuanced than prior research on UK plants. Most management techniques are shown to have beneficial spillovers to energy efficiency, but an emphasis on generic targets, conditional on other management practices, results in spillovers that increase energy intensity. Our specification controls for industry specific effects at a detailed 6-digit NAICS level and finds the relationship between management and energy use to be strongest for firms in energy intensive industries. We interpret the empirical result that generic management practices do not necessarily spillover to improved energy performance as evidence of an energy management gap.

Gale A. Boyd; E. Mark Curtis

2014-01-01T23:59:59.000Z

491

Nature of the Band Gap and Origin of the Electro-/Photo-Activity of Co3O4  

SciTech Connect (OSTI)

Co3O4 exhibits intriguing physical, chemical and catalytic properties and has demonstrated great potential for next-generation renewable energy applications. These interesting properties and promising applications are underpinned by its electronic structure and optical properties, which are unfortunately poorly understood and the subject of considerable debate over many years. Here, we unveil a consistent electronic structural description of Co3O4 by synergetic infrared optical and in situ photoemission spectroscopy as well as standard density functional theory calculations. In contrast to previous assumptions, we demonstrate a much smaller fundamental band gap, which is directly related to its efficient electro-/photoactivity. The present results may help to advance the fundamental understanding and provide guidance for the use of oxidematerials in photocatalysis and solar applications.

Qiao, L.; Xiao, Haiyan Y.; Meyer, H. M.; Sun, J. N.; Rouleau, C. M.; Puretzky, A. A.; Geohegan, D. B.; Ivanov, Ilia N.; Yoon, M.; Weber, William J.; Biegalski, Michael D.

2013-08-21T23:59:59.000Z

492

Electrical insulation system for the shell-vacuum vessel and poloidal field gap in the ZTH machine  

SciTech Connect (OSTI)

The electrical insulation systems for the ZTH machine have many unusual design problems. The poloidal field gap insulation must be capable of conforming to poloidal and toroidal contours, provide a 25 kV hold off, and sufficiently adhere to the epoxy back fill between the overlapping conductors. The shell-vacuum vessel system will use stretchable and flexible insulation along with protective hats, boots and sleeves. The shell-vacuum vessel system must be able to withstand a 12.5 kV pulse with provision for thermal insulation to limit the effects of the 300{degrees}C vacuum vessel during operation and bakeout. Methodology required to provide the electrical protection along with testing data and material characteristics will be presented. 7 figs.

Reass, W.A.; Ballard, E.O.

1989-01-01T23:59:59.000Z

493

From Cradle-to-Grave at the Nanoscale: Gaps in U.S. Regulatory Oversight along the Nanomaterial Life Cycle  

Science Journals Connector (OSTI)

The result is that some forms of engineered nanomaterials may escape federal oversight and rigorous risk review at one or more stages along their life cycle, with the largest gaps occurring at the postmarket stages, and at points of ENM release to the environment. ... Oversight can be improved through pending regulatory reforms, increased research and development for the monitoring, control, and analysis of environmental and end-of-life releases, introduction of periodic re-evaluation of ENM risks, and fostering a bottom-up stewardship approach to the responsible management of risks from engineered nanomaterials. ... Regulatory agencies can play a strong role in promoting proactive bottom-up risk management and shared responsibility in the oversight of health and environmental risks. ...

Christian E. H. Beaudrie; Milind Kandlikar; Terre Satterfield

2013-05-13T23:59:59.000Z

494

Conductivity and optical band gaps of polyethylene oxide doped with Li{sub 2}SO{sub 4} salt  

SciTech Connect (OSTI)

The conductivity and optical properties of Li{sub 2}SO{sub 4} doped polyethylene oxide (PEO) films were studied. The polymer electrolyte films are prepared using solution casting technique. The material phase change was confirmed by X-ray diffraction (XRD) technique. Optical absorption study was conducted using UV- Vis. Spectroscopy in the wavelength range 1901100nm on pure and doped PEO films. The direct and indirect optical band gaps were found decreased from 5.814.51eV and 4.843.43eV respectively with increasing the Li{sub 2}SO{sub 4}. The conductivity found to increases with increasing the dopant concentration due to strong hopping mechanism at room temperature.

Chapi, Sharanappa, E-mail: dehu2010@gmail.com; Raghu, S., E-mail: dehu2010@gmail.com; Subramanya, K., E-mail: dehu2010@gmail.com; Archana, K., E-mail: dehu2010@gmail.com; Mini, V., E-mail: dehu2010@gmail.com; Devendrappa, H., E-mail: dehu2010@gmail.com [Dept. of Physics, Mangalore University, Mangalagangothri-574199 (India)

2014-04-24T23:59:59.000Z

495

Wide band-gap, fairly conductive p-type hydrogenated amorphous silicon carbide films prepared by direct photolysis; solar cell application  

SciTech Connect (OSTI)

Wide optical band-gap (2.0--2.3 eV) undoped and boron-doped hydrogenated amorphous silicon carbide (a-SiC:H) films have been prepared by both direct photo and rf glow discharge (GD plasma) decomposition of pure methylsilanes or acetylene and disilane gas mixtures. The photochemically prepared p-type films showed higher dark conductivities and lower activation energies. For an optical band gap of 2.0 eV a high conductivity of 7.0 x 10/sup -5/ (S cm/sup -1/) and a low activation energy of 0.33 eV have been measured. The first trial of these wide band-gap, fairly conductive films as a window layer in a p-i-n solar cell showed the high conversion efficiency of 9.46% under AM1 insolation.

Yamada, A.; Kenne, J.; Konagai, M.; Takahashi, K.

1985-02-01T23:59:59.000Z

496

A Fundamental Study on Detection of Defects in the Web Gap Region of Steel Plate Girder Bridges by the Plate Wave Ultrasonic Technique  

Science Journals Connector (OSTI)

Applicability of the plate wave technique was investigated in this study to detect small defects in the web gap region of the steel plate girder. Torsion induced fatigue cracking is one of the most serious problems for steel bridges. As the conventional inspection method visual inspection has been applied. However this method is not always accurate. In addition accessibility of the inspectors is also a serious problem. This study aims at the application of the plate wave ultrasonic testing to detect a fatigue crack in the web gap area and monitor its propagation. As the first step the influence of a stiffener and detectability of one or more holes in the web gap were investigated.

H. Shirahata; L. Greimann; T. Wipf; B. Phares; N. Nakagawa

2004-01-01T23:59:59.000Z

497

Confirmation of intrinsic electron gap states at nonpolar GaN(1-100) surfaces combining photoelectron and surface optical spectroscopy  

SciTech Connect (OSTI)

The electronic structure of GaN(1100) surfaces is investigated in-situ by photoelectron spectroscopy (PES) and reflection anisotropy spectroscopy (RAS). Occupied surface states 3.1?eV below the Fermi energy are observed by PES, accompanied by surface optical transitions found in RAS around 3.3?eV, i.e., below the bulk band gap. These results indicate that the GaN(1100) surface band gap is smaller than the bulk one due to the existence of intra-gap states, in agreement with density functional theory calculations. Furthermore, the experiments demonstrate that RAS can be applied for optical surface studies of anisotropic crystals.

Himmerlich, M., E-mail: marcel.himmerlich@tu-ilmenau.de; Eisenhardt, A.; Shokhovets, S.; Krischok, S. [Institut fr Physik and Institut fr Mikro- und Nanotechnologien, TU Ilmenau, PF 100565, 98684 Ilmenau (Germany); Rthel, J.; Speiser, E.; Neumann, M. D.; Navarro-Quezada, A.; Esser, N. [Leibniz-Institut fr Analytische Wissenschaften - ISAS - e.V., Albert-Einstein-Strasse 9, 12489 Berlin (Germany)

2014-04-28T23:59:59.000Z

498

Investigation of anisotropic photonic band gaps in three-dimensional magnetized plasma photonic crystals containing the uniaxial material  

SciTech Connect (OSTI)

In this paper, the dispersive properties of three-dimensional (3D) magnetized plasma photonic crystals (MPPCs) composed of anisotropic dielectric (the uniaxial material) spheres immersed in homogeneous magnetized plasma background with face-centered-cubic (fcc) lattices are theoretically investigated by the plane wave expansion method, as the Voigt effects of magnetized plasma are considered. The equations for calculating the anisotropic photonic band gaps (PBGs) in the first irreducible Brillouin zone are theoretically deduced. The anisotropic PBGs and two flatbands regions can be obtained. The effects of the ordinary-refractive index, extraordinary-refractive index, filling factor, plasma frequency, and external magnetic field on the dispersive properties of the 3D MPPCs are investigated in detail, respectively, and some corresponding physical explanations are also given. The numerical results show that the anisotropy can open partial band gaps in 3D MPPCs with fcc lattices and the complete PBGs can be found compared to the conventional 3D MPPCs doped by the isotropic material. The bandwidths of PBGs can be tuned by introducing the magnetized plasma into 3D PCs containing the uniaxial material. It is also shown that the anisotropic PBGs can be manipulated by the ordinary-refractive index, extraordinary-refractive index, filling factor, plasma frequency, and external magnetic field, respectively. The locations of flatbands regions cannot be manipulated by any parameters except for the plasma frequency and external magnetic field. Introducing the uniaxial material can obtain the complete PBGs as the 3D MPPCs with high symmetry and also provides a way to design the tunable devices.

Zhang, Hai-Feng [College of Electronic and Information Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016 (China) [College of Electronic and Information Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016 (China); Nanjing Artillery Academy, Nanjing 211132 (China)] [China; Liu, Shao-Bin; Kong, Xiang-Kun [College of Electronic and Information Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016 (China)] [College of Electronic and Information Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016 (China)

2013-09-15T23:59:59.000Z

499

Band-gap nonlinear optical generation: The structure of internal optical field and the structural light focusing  

SciTech Connect (OSTI)

A novel approach for the enhancement of nonlinear optical effects inside globular photonic crystals (PCs) is proposed and systematically studied via numerical simulations. The enhanced optical harmonic generation is associated with two- and three-dimensional PC pumping with the wavelength corresponding to different PC band-gaps. The interactions between light and the PC are numerically simulated using the finite-difference time-domain technique for solving the Maxwell's equations. Both empty and infiltrated two-dimensional PC structures are considered. A significant enhancement of harmonic generation is predicted owing to the highly efficient PC pumping based on the structural light focusing effect inside the PC structure. It is shown that a highly efficient harmonic generation could be attained for both the empty and infiltrated two- and three-dimensional PCs. We are demonstrating the ability for two times enhancement of the parametric decay efficiency, one order enhancement of the second harmonic generation, and two order enhancement of the third harmonic generation in PC structures in comparison to the nonlinear generations in appropriate homogenous media. Obviously, the nonlinear processes should be allowed by the molecular symmetry. The criteria of the nonlinear process efficiency are specified and calculated as a function of pumping wavelength position towards the PC globule diameter. Obtained criterion curves exhibit oscillating characteristics, which indicates that the highly efficient generation corresponds to the various PC band-gap pumping. The highest efficiency of nonlinear conversions could be reached for PC pumping with femtosecond optical pulses; thus, the local peak intensity would be maximized. Possible applications of the observed phenomenon are also discussed.

Zaytsev, Kirill I., E-mail: kirzay@gmail.com; Katyba, Gleb M.; Yakovlev, Egor V.; Yurchenko, Stanislav O., E-mail: st.yurchenko@mail.ru [Bauman Moscow State Technical University, 2nd Baumanskaya str. 5, Moscow 105005 (Russian Federation); Gorelik, Vladimir S. [P. N. Lebedev Physics Institute of the Russian Academy of Sciences, Leninskiy Prospekt 53, Moscow 119991 (Russian Federation)

2014-06-07T23:59:59.000Z

500

Fabry-Perot tuning of the band-gap polarity in plasmonic crystals Jin E. Kihm,1 Y. C. Yoon,1 D. J. Park,1 Y. H. Ahn,1 C. Ropers,2 C. Lienau,2,3 J. Kim,4 Q. H. Park,5 and D. S. Kim1,  

E-Print Network [OSTI]

-resolved transmission spectra of nanoslit arrays in metal films demonstrate band-gap formation resulting from surface-gap flipping. Our results indicate an interesting route towards band-gap engineering in plasmonic crystals. DOI of electronic and photonic band gaps--i.e., energy regions with a vanishing density of states in crystal- line

Peinke, Joachim