Sample records for newly discovered fields

  1. Evidence for Gamma-ray Emission from the Newly Discovered Dwarf Galaxy Reticulum 2

    E-Print Network [OSTI]

    Geringer-Sameth, Alex; Koushiappas, Savvas M; Koposov, Sergey E; Belokurov, Vasily; Torrealba, Gabriel; Evans, N Wyn

    2015-01-01T23:59:59.000Z

    We present a search for gamma-ray emission from the direction of the newly discovered dwarf galaxy Reticulum 2. Using Fermi-LAT data, we detect a signal that exceeds expected backgrounds between ~2-10 GeV and is consistent with annihilation of dark matter for particle masses less than a few x 10^2 GeV. Modeling the background as a Poisson process based on Fermi-LAT diffuse models, and taking into account trials factors, we detect emission with p-value less than 9.8 x 10^-5 (>3.7 sigma). An alternative, model-independent treatment of background reduces the significance, raising the p-value to 9.7 x 10^-3 (2.3 sigma). Even in this case, however, Reticulum 2 has the most significant gamma-ray signal of any known dwarf galaxy. If Reticulum 2 has a dark matter halo that is similar to those inferred for other nearby dwarfs, the signal is consistent with the s-wave relic abundance cross section for annihilation.

  2. Mentoring and Job Training in the Field for Newly Trained Contractors...

    Energy Savers [EERE]

    Mentoring and Job Training in the Field for Newly Trained Contractors Mentoring and Job Training in the Field for Newly Trained Contractors Better Buildings Neighborhood Program...

  3. The environmental impacts on the star formation main sequence: an H-alpha study of the newly discovered rich cluster at z=1.52

    E-Print Network [OSTI]

    Koyama, Yusei; Tadaki, Ken-ichi; Hayashi, Masao; Tanaka, Ichi; Shimakawa, Rhythm

    2014-01-01T23:59:59.000Z

    We report the discovery of a strong over-density of galaxies in the field of a radio galaxy at z=1.52 (4C65.22) based on our broad-band and narrow-band (H-alpha) photometry with Subaru Telescope. We find that H-alpha emitters are located in the outskirts of the density peak (cluster core) dominated by passive red-sequence galaxies. This resembles the situation in lower-redshift clusters, suggesting that the newly discovered structure is a well-evolved rich galaxy cluster at z=1.5. Our data suggest that the color-density and stellar mass-density relations are already in place at z~1.5, mostly driven by the passive red massive galaxies residing within Rcenvironmental trends almost disappear when we consider only star-forming (SF) galaxies. We do not find SFR-density or SSFR-density relations amongst SF galaxies, and the location of the SF main sequence does not significantly change with environment. Nevertheless, we find a tentative hint that star-bursting galaxies (up-s...

  4. Confirming CCS Security and Environmental Safety Aim of Newly Selected Field Projects

    Broader source: Energy.gov [DOE]

    The U.S. Department of Energy’s portfolio of field projects aimed at confirming that long-term geologic carbon dioxide storage is safe and environmentally secure has been expanded by three projects selected to collectively receive $34.5 million over four years.

  5. The First Hundred Brown Dwarfs Discovered by the Wide-field Infrared Survey Explorer (WISE)

    E-Print Network [OSTI]

    Bochanski, John J.

    We present ground-based spectroscopic verification of 6 Y dwarfs (see also Cushing et al.), 89 T dwarfs, 8 L dwarfs, and 1 M dwarf identified by the Wide-field Infrared Survey Explorer (WISE). Eighty of these are cold brown ...

  6. Hubble Space Telescope Spectroscopy of Brown Dwarfs Discovered with the Wide-field Infrared Survey Explorer

    E-Print Network [OSTI]

    Schneider, Adam C; Kirkpatrick, J Davy; Gelino, Christopher R; Mace, Gregory N; Wright, Edward L; Eisenhardt, Peter R; Skrutskie, M F; Griffith, Roger L; Marsh, Kenneth A

    2015-01-01T23:59:59.000Z

    We present a sample of brown dwarfs identified with the {\\it Wide-field Infrared Survey Explorer} (WISE) for which we have obtained {\\it Hubble Space Telescope} ({\\it HST}) Wide Field Camera 3 (WFC3) near-infrared grism spectroscopy. The sample (twenty-two in total) was observed with the G141 grism covering 1.10$-$1.70 $\\mu$m, while fifteen were also observed with the G102 grism, which covers 0.90$-$1.10 $\\mu$m. The additional wavelength coverage provided by the G102 grism allows us to 1) search for spectroscopic features predicted to emerge at low effective temperatures (e.g.\\ ammonia bands) and 2) construct a smooth spectral sequence across the T/Y boundary. We find no evidence of absorption due to ammonia in the G102 spectra. Six of these brown dwarfs are new discoveries, three of which are found to have spectral types of T8 or T9. The remaining three, WISE J082507.35$+$280548.5 (Y0.5), WISE J120604.38$+$840110.6 (Y0), and WISE J235402.77$+$024015.0 (Y1) are the nineteenth, twentieth, and twenty-first spec...

  7. Newly discovered superconductor state opens a window to the evolution...

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

    vortices in the laboratory. "Vortices control the current carrying ability of all superconductors," said Argonne Distinguished Fellow and materials scientist Valerii Vinokur, a...

  8. A newly discovered protein export machine in malaria parasites

    E-Print Network [OSTI]

    Arnold, Jonathan

    associated with protein translocons), a novel protein termed PTEX150 and a known parasite protein, exported importance, the mechanism of protein export is not known although export initially requires proteins to enter,3,14 , but homology searches for relatives of known members of translocon systems have failed to predict its identity

  9. The Araucaria Project. The Distance to the Local Group Galaxy WLM from Cepheid Variables discovered in a Wide-Field Imaging Survey

    E-Print Network [OSTI]

    G. Pietrzynski; W. Gieren; A. Udalski; I. Soszynski; F. Bresolin; R. P. Kudritzki; A. Garcia; D. Minniti; R. Mennickent; O. Szewczyk; M. Szymanski; M. Kubiak; L. Wyrzykowski

    2007-04-16T23:59:59.000Z

    We have conducted an extensive wide-field imaging survey for Cepheid variables in the Local Group irregular galaxy WLM. From data obtained on 101 nights, we have discovered 60 Cepheids which include 14 of the 15 Cepheid variables previously detected by Sandage and Carlson. Down to a period of 3 days, our Cepheid survey in WLM should be practically complete. Importantly, we have found for the first time a long-period Cepheid (P=54.2 days) in this galaxy, alleviating the puzzle that WLM with its many blue, massive stars does not contain Cepheids with periods longer than about 10 days. Our data define tight period-luminosity relations in V, I and the reddening-free Wesenheit magnitude ${\\rm W}_{\\rm I}$ which are all extremely well fit by the corresponding slopes of the LMC Cepheid PL relation, suggesting no change of the PL relation slope down to a Cepheid metal abundance of about -1.0 dex, in agreement with other recent studies. We derive a true distance modulus to WLM of 25.144 $\\pm$0.03 (r) $\\pm$0.07 (s) mag from our data, in good agreement with the earlier 24.92 $\\pm$ 0.21 mag determination of Lee, Freedman and Madore (1993a) from Cepheid variables. The quoted value of the systematic uncertainty does not include the contribution from the LMC distance which we have assumed to be 18.50 mag, as in the previous papers in our project.

  10. Was the Higgs boson discovered?

    E-Print Network [OSTI]

    Nguyen Anh Ky; Nguyen Thi Hong Van

    2015-04-09T23:59:59.000Z

    The standard model has postulated the existence of a scalar boson, named the Higgs boson. This boson plays a central role in a symmetry breaking scheme called the Brout-Englert-Higgs mechanism (or the Brout-Englert-Higgs-Guralnik-Hagen-Kibble mechanism, for completeness) making the standard model realistic. However, until recently at least, the 50-year-long-sought Higgs boson had remained the only particle in the standard model not yet discovered experimentally. It is the last but very important missing ingredient of the standard model. Therefore, searching for the Higgs boson is a crucial task and an important mission of particle physics. For this purpose, many theoretical works have been done and different experiments have been organized. It may be said in particular that to search for the Higgs boson has been one of the ultimate goals of building and running the LHC, the world's largest and most powerful particle accelerator, at CERN, which is a great combination of science and technology. Recently, in the summer of 2012, ATLAS and CMS, the two biggest and general-purpose LHC collaborations, announced the discovery of a new boson with a mass around 125 GeV. Since then, for over two years, ATLAS, CMS and other collaborations have carried out intensive investigations on the newly discovered boson to confirm that this new boson is really the Higgs boson (of the standard model). It is a triumph of science and technology and international cooperation. Here, we will review the main results of these investigations following a brief introduction to the Higgs boson within the theoretical framework of the standard model and Brout-Englert-Higgs mechanism as well as a theoretical and experimental background of its search. This paper may attract interest of not only particle physicists but also a broader audience.

  11. Discover E for budding engineers

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField Campaign:INEA : Papers Subfolders in "Papers"WirelessDiscover

  12. Unique Auxin Regulation Mechanism Discovered

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

    Mechanism Discovered Print The plant hormone auxin regulates many plant growth and development processes, including shoot growth, root branching, fruit ripening, tropisms,...

  13. Analysis of Metabolic Pathways and Fluxes in a Newly Discovered Thermophilic and

    E-Print Network [OSTI]

    Hazen, Terry

    into the physiological properties of this extremophile and explore its metabolism for bio-ethanol or other bioprocess et al., 2006), which makes it an ideal microbe for improved bio-ethanol production. Moreover

  14. SFU Library Ask. Explore. Discover.

    E-Print Network [OSTI]

    SFU Library Ask. Explore. Discover. SFU Library Annual Report 2007-08 #12;SFU Library Annual Report..................................................................................................... 8 WAC BENNETT LIBRARY................................................................................... 9 SAMUEL AND FRANCES BELZBERG LIBRARY............................................... 10 FRASER

  15. Discover your Library Medical Library

    E-Print Network [OSTI]

    Discover your Library Medical Library Welcome to the Gus Fraenkel Medical Library. The Library is a branch of the Flinders University Libraries including: Central (on the Plaza of the north ridge precinct) Law (on level 3 of the Central Library building) Sturt (at the Sturt precinct) as well

  16. Risks of using AP locations discovered through war driving

    E-Print Network [OSTI]

    Kotz, David

    Risks of using AP locations discovered through war driving Minkyong Kim, Jeffrey J. Fielding the actual locations are often unavailable, they use estimated locations from war driving estimated through war driving. War driving is the process of collecting Wi-Fi beacons by driving or walking

  17. Was the Higgs boson discovered?

    E-Print Network [OSTI]

    Ky, Nguyen Anh

    2015-01-01T23:59:59.000Z

    The standard model has postulated the existence of a scalar boson, named the Higgs boson. This boson plays a central role in a symmetry breaking scheme called the Brout-Englert-Higgs mechanism (or the Brout-Englert-Higgs-Guralnik-Hagen-Kibble mechanism, for completeness) making the standard model realistic. However, until recently at least, the 50-year-long-sought Higgs boson had remained the only particle in the standard model not yet discovered experimentally. It is the last but very important missing ingredient of the standard model. Therefore, searching for the Higgs boson is a crucial task and an important mission of particle physics. For this purpose, many theoretical works have been done and different experiments have been organized. It may be said in particular that to search for the Higgs boson has been one of the ultimate goals of building and running the LHC, the world's largest and most powerful particle accelerator, at CERN, which is a great combination of science and technology. Recently, in the...

  18. BIODIVERSITY The contribution of newly established

    E-Print Network [OSTI]

    Bernatchez, Louis

    BIODIVERSITY RESEARCH The contribution of newly established populations to the dynamics of range River and estuary. We first determined genetic origins among several potential wild and cultured source, in Lake Memphremagog. Populations from the Maritime provinces and domestic strains do not contribute

  19. Discovering the Value of "Gaining Through Training"

    E-Print Network [OSTI]

    Lee, R. C.; Hahn, G. E.

    This paper is dedicated to five situations where unrecognized needs were discovered while general and generic training was being conducted. The initial training classes were on the proper use and importance of steam energy in many different types...

  20. Analysis of Metabolic Pathways and Fluxes in a Newly Discovered Thermophilic and Ethanol-Tolerant Geobacillus Strain

    E-Print Network [OSTI]

    Tang, Yinjie J.

    2009-01-01T23:59:59.000Z

    Bacteria engineered for fuel ethanol production: currentcharacterization of two novel ethanol-tolerant facultative-Lin Y, Tanaka S. 2006. Ethanol fermentation from biomass

  1. Analysis of Metabolic Pathways and Fluxes in a Newly Discovered Thermophilic and Ethanol-Tolerant Geobacillus Strain

    E-Print Network [OSTI]

    Tang, Yinjie J.

    2009-01-01T23:59:59.000Z

    explore its metabolism for bioethanol or other bioprocessthe metabolic pathways for bioethanol production as well as

  2. FIELD TRIALS OF NEWLY DEVELOPED POSITIVE DISPLACEMENT SUBMERSIBLE PUMP

    SciTech Connect (OSTI)

    Rob Beard; Leland Traylor

    2002-12-01T23:59:59.000Z

    The purpose of this grant was to evaluate under real world conditions the performance of a new type of downhole pump, the hydraulically driven submersible diaphragm pump. This pump is supplied by Pumping Solutions Incorporated, Albuquerque NM. The original scope of the project was to install 10 submersible pumps, and compare that to 10 similar installations of rod pumps. As an operator, the system as tested was not ready for prime time. The PSI group did improve the product and offered excellent service. The latest design appears to be much better, but more test data is needed to show short run life is not a problem. This product should continue to be developed; the testing did not uncover any fundamental problems that would preclude it's widespread use. On the positive side, the pump was easy to run, was more power efficient then a rod pump, and is the only submersible that could handle the large quantities of solids typical of CBM production. The product shows much promise for the future, and with continued design and testing, this type of submersible pump has the potential to become the standard of the industry.

  3. Regularization Predicts While Discovering Taxonomy Youssef Mroueh ,

    E-Print Network [OSTI]

    Poggio, Tomaso

    Regularization Predicts While Discovering Taxonomy Youssef Mroueh , , Tomaso Poggio , Lorenzo are described by an underlying class taxonomy. In particular we discuss how to learn the class taxonomy while taxonomies that may lead to a more efficient classification are not exploited. Several approaches have been

  4. Perturbations in the Lipid Profile of Individuals with Newly...

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

    Perturbations in the Lipid Profile of Individuals with Newly Diagnosed Type 1 Diabetes Mellitus: Lipidomics Analysis of a Perturbations in the Lipid Profile of Individuals with...

  5. Knowledge Capture and Transfer Program (KCTP) "Newly Created...

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

    Powerpedia Page The Knowledge Capture and Transfer Program (KCTP) has a new logo and a newly created Powerpedia page. The page layout and program descriptions allow for...

  6. Success Story: Ingersoll Rand Discovers Hidden Savings with a...

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

    Ingersoll Rand Discovers Hidden Savings with a Three-Tiered Energy Audit Model Success Story: Ingersoll Rand Discovers Hidden Savings with a Three-Tiered Energy Audit Model This...

  7. ORIGINAL ARTICLE Comparative genomics of two newly isolated

    E-Print Network [OSTI]

    Alvarez-Cohen, Lisa

    ORIGINAL ARTICLE Comparative genomics of two newly isolated Dehalococcoides strains of Microbiology, Cornell University, Ithaca, NY, USA Comparative genomics of Dehalococcoides strains and an enrichment were performed using a microarray targeting genes from all available sequenced genomes

  8. Seven new binaries discovered in the Kepler light curves through the BEER method confirmed by radial-velocity observations

    E-Print Network [OSTI]

    Faigler, S; Quinn, S N; Latham, D W; Tal-Or, L

    2011-01-01T23:59:59.000Z

    We present seven newly discovered non-eclipsing short-period binary systems with low-mass companions, identified by the recently introduced BEER algorithm, applied to the publicly available 138-day photometric light curves obtained by the Kepler mission. The detection is based on the beaming effect (sometimes called Doppler boosting), which increases (decreases) the brightness of any light source approaching (receding from) the observer, enabling a prediction of the stellar Doppler radial-velocity modulation from its precise photometry. The BEER algorithm identifies the BEaming periodic modulation, with a combination of the well known Ellipsoidal and Reflection/heating periodic effects, induced by short-period companions. The seven detections were confirmed by spectroscopic radial-velocity follow-up observations, indicating minimum secondary masses in the range of 0.07-0.4 Msun. The discovered binaries establish for the first time the feasibility of the BEER algorithm as a new detection method for short-perio...

  9. Structural Characterization of a Serendipitously Discovered Bioactive Macromolecule, Lignin Sulfate

    E-Print Network [OSTI]

    Desai, Umesh R

    Structural Characterization of a Serendipitously Discovered Bioactive Macromolecule, Lignin Sulfate was identified through a battery of biophysical and chemical analyses as a sulfated form of lignin, a three

  10. Argonne scientists discover new magnetic phase in iron-based...

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

    neutron diffraction image giving evidence for the new magnetic phase in iron-based superconductors discovered by Argonne scientists. It shows the scattering results from a sample...

  11. Improving Home Automation by Discovering Regularly Occurring Device Usage Patterns

    E-Print Network [OSTI]

    Cook, Diane J.

    Improving Home Automation by Discovering Regularly Occurring Device Usage Patterns Edwin O in an environment can be mined to discover significant patterns, which an intelligent agent could use to automate of two prediction algorithms, thus demonstrating multiple uses for a home automation system. Finally, we

  12. Czech Archaeologists in Uzbekistan Discover Bronze Age Irrigation System

    E-Print Network [OSTI]

    Cerveny, Vlastislav

    Czech Archaeologists in Uzbekistan Discover Bronze Age Irrigation System Compiled 20.11.2014 16 they discovered was settlements dating back to the Iron and Bronze Ages, including a well-preserved irrigation system. The Paschurt Valley is located in the south of Uzbekistan, a country which has become

  13. New events discovered in the Apollo lunar seismic data

    E-Print Network [OSTI]

    Shearer, Peter

    New events discovered in the Apollo lunar seismic data R. C. Bulow, C. L. Johnson,1 and P. M processing tools to revisit the Apollo lunar seismic data set with the goal of extending and further), New events discovered in the Apollo lunar seismic data, J. Geophys. Res., 110, E10003, doi:10

  14. Newly Generated Liquid Waste Processing Alternatives Study, Volume 1

    SciTech Connect (OSTI)

    Landman, William Henry; Bates, Steven Odum; Bonnema, Bruce Edward; Palmer, Stanley Leland; Podgorney, Anna Kristine; Walsh, Stephanie

    2002-09-01T23:59:59.000Z

    This report identifies and evaluates three options for treating newly generated liquid waste at the Idaho Nuclear Technology and Engineering Center of the Idaho National Engineering and Environmental Laboratory. The three options are: (a) treat the waste using processing facilities designed for treating sodium-bearing waste, (b) treat the waste using subcontractor-supplied mobile systems, or (c) treat the waste using a special facility designed and constructed for that purpose. In studying these options, engineers concluded that the best approach is to store the newly generated liquid waste until a sodium-bearing waste treatment facility is available and then to co-process the stored inventory of the newly generated waste with the sodium-bearing waste. After the sodium-bearing waste facility completes its mission, two paths are available. The newly generated liquid waste could be treated using the subcontractor-supplied system or the sodium-bearing waste facility or a portion of it. The final decision depends on the design of the sodium-bearing waste treatment facility, which will be completed in coming years.

  15. Strontium-90 Error Discovered in Subcontract Laboratory Spreadsheet

    SciTech Connect (OSTI)

    D. D. Brown A. S. Nagel

    1999-07-31T23:59:59.000Z

    West Valley Demonstration Project health physicists and environment scientists discovered a series of errors in a subcontractor's spreadsheet being used to reduce data as part of their strontium-90 analytical process.

  16. A newly discovered DLA and associated Ly-alpha emission in the spectra of the gravitationally lensed quasar UM 673A,B

    E-Print Network [OSTI]

    Cooke, Ryan; Steidel, Charles C; King, Lindsay J; Rudie, Gwen C; Rakic, Olivera

    2010-01-01T23:59:59.000Z

    The sightline to the brighter member of the gravitationally lensed quasar pair UM 673A,B intersects a damped Lyman-alpha system (DLA) at z = 1.62650 which, because of its low redshift, has not been recognised before. Our high quality echelle spectra of the pair, obtained with HIRES on the Keck I telescope, show a drop in neutral hydrogen column density N(H I) by a factor of at least 400 between UM 673A and B, indicating that the DLA's extent in this direction is much less than the 2.7 kpc separation between the two sightlines at z = 1.62650. By reassessing this new case together with published data on other QSO pairs, we conclude that the typical size (radius) of DLAs at these redshifts is R ~ (5 +/- 3) kpc, smaller than previously realised. Highly ionized gas associated with the DLA is more extended, as we find only small differences in the C IV absorption profiles between the two sightlines. Coincident with UM 673B, we detect a weak and narrow Ly-alpha emission line which we attribute to star formation acti...

  17. HATS-1b: THE FIRST TRANSITING PLANET DISCOVERED BY THE HATSouth SURVEY

    SciTech Connect (OSTI)

    Penev, K.; Bakos, G. A.; Hartman, J. D.; Csubry, Z. [Department of Astrophysical Sciences, Princeton University, NJ 08544 (United States); Bayliss, D.; Zhou, G.; Conroy, P. [Australian National University, Canberra (Australia); Jordan, A.; Suc, V.; Rabus, M.; Brahm, R.; Espinoza, N. [Departamento de Astronomia y Astrofisica, Pontificia Universidad Catolica de Chile, Av. Vicuna Mackenna 4860, 7820436 Macul, Santiago (Chile); Mohler, M.; Mancini, L.; Henning, T.; Nikolov, N.; Csak, B. [Max Planck Institute for Astronomy, Heidelberg (Germany); Beky, B.; Noyes, R. W. [Harvard-Smithsonian Center for Astrophysics, Cambridge, MA (United States); Buchhave, L., E-mail: kpenev@astro.princeton.edu [Niels Bohr Institute, Copenhagen University (Denmark); and others

    2013-01-01T23:59:59.000Z

    We report the discovery of HATS-1b, a transiting extrasolar planet orbiting the moderately bright V = 12.05 G dwarf star GSC 6652-00186, and the first planet discovered by HATSouth, a global network of autonomous wide-field telescopes. HATS-1b has a period of P Almost-Equal-To 3.4465 days, mass of M{sub p} Almost-Equal-To 1.86 M{sub J}, and radius of R{sub p} Almost-Equal-To 1.30 R{sub J}. The host star has a mass of 0.99 M{sub Sun} and radius of 1.04 R{sub Sun }. The discovery light curve of HATS-1b has near-continuous coverage over several multi-day timespans, demonstrating the power of using a global network of telescopes to discover transiting planets.

  18. Certification document for newly generated contact-handled transuranic waste

    SciTech Connect (OSTI)

    Box, W.D.; Setaro, J.

    1984-01-01T23:59:59.000Z

    The US Department of Energy has requested that all national laboratories handling defense waste develop and augment a program whereby all newly generated contact-handled transuranic (TRU) waste be contained, stored, and then shipped to the Waste Isolation Pilot Plant (WIPP) in accordance with the requirements set forth in WIPP-DOE-114. The program described in this report delineates how Oak Ridge National Laboratory intends to comply with these requirements and lists the procedures used by each generator to ensure that their TRU wastes are certifiable for shipment to WIPP.

  19. Newly Invented Shielding For Stopping Neutrons Cold | Jefferson Lab

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's Possible for Renewable Energy:Nanowire Solar541,9337, 2011RNew VisibleTool HelpsJune 7,Newly

  20. Discovering How Muscles Really Work Project at NERSC

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625govInstrumentstdmadapInactiveVisitingContract ManagementDiscovering How Muscles Really Work Discovering How Muscles

  1. Discovering Social Invention With MAKE | GE Global Research

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625govInstrumentstdmadapInactiveVisitingContract ManagementDiscovering How Muscles Really Work Discovering How

  2. Discovering unexpected information using a building energy visualization tool.

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    platform to manage buildings energy. Smart buildings are already managed by BMS (Building Management SystemDiscovering unexpected information using a building energy visualization tool. Lange B.a, Rodriguez insight about buildings energy consumption. We will focus on the usage of this software to extract

  3. DISCOVERING BRAIN MECHANISMS AND THE RULES OF MOLECULAR

    E-Print Network [OSTI]

    Stengel, Robert F.

    DISCOVERING BRAIN MECHANISMS AND THE RULES OF MOLECULAR BIOLOGY Paul Shapshak, PhD*1 and Robert-324-2723 ABSTRACT The human genome has approximately 30,000 genes. Brain cells express at least 15,000. The human brain is subject to many acute and chronic diseases including viral encephalitis, AIDS/HIV Associated

  4. Discovering Ecosystem Models from Time-Series Data

    E-Print Network [OSTI]

    Langley, Pat

    Discovering Ecosystem Models from Time-Series Data Dileep George, 1 Kazumi Saito, 2 Pat Langley, 1. Ecosystem models are used to interpret and predict the in- teractions of species and their environment. In this paper, we address the task of inducing ecosystem models from background knowledge and time- series data

  5. Discovering the Founders' Attitudes Toward the United States Supreme Court

    E-Print Network [OSTI]

    Avila, Teresia Coleman

    2006-12-13T23:59:59.000Z

    -sovereign central and states governments or of sovereign central/weak subordinate governments. To discover the Founder’s attitudes writings of three periods were examined: 1) Marshall’s Marbury v. Madison opinion; 2) debates surrounding opinions in Martin v. Hunter...

  6. Towards Discovering Data Center Genome Using Sensor Nets Microsoft Research

    E-Print Network [OSTI]

    Amir, Yair

    en- ergy consumption. Improving data center energy efficiency is a pressing issue with significant operators lack sufficient visibility into how heat is generated, distributed, and exchanged in data centersTowards Discovering Data Center Genome Using Sensor Nets Jie Liu Microsoft Research One Microsoft

  7. Twitter Web Application How to Discover Twitter Friendship through

    E-Print Network [OSTI]

    Zhang, Junshan

    Twitter Web Application How to Discover Twitter Friendship through REST API David Prejban (dprejba1 online social network dataset and implement a tool to utilize Twitter's REST API to collect user's REST API is a powerful tool to use embedded in a web application. It allows developers to gather

  8. Discovering Geometric Patterns in Genomic Data Wenxuan Gao

    E-Print Network [OSTI]

    Grossman, Robert

    Discovering Geometric Patterns in Genomic Data Wenxuan Gao Department of Computer Science University of Illinois at Chicago wgao5@uic.edu Christopher Brown Institute for Genomics & Systems Biology caseybrown@uchicago.edu Robert L. Grossman Institute for Genomics & Systems Biology robert.grossman @uchicago

  9. Guidelines for developing certification programs for newly generated TRU waste

    SciTech Connect (OSTI)

    Whitty, W.J.; Ostenak, C.A.; Pillay, K.K.S.; Geoffrion, R.R.

    1983-05-01T23:59:59.000Z

    These guidelines were prepared with direction from the US Department of Energy (DOE) Transuranic (TRU) Waste Management Program in support of the DOE effort to certify that newly generated TRU wastes meet the Waste Isolation Pilot Plant (WIPP) Waste Acceptance Criteria. The guidelines provide instructions for generic Certification Program preparation for TRU-waste generators preparing site-specific Certification Programs in response to WIPP requirements. The guidelines address all major aspects of a Certification Program that are necessary to satisfy the WIPP Waste Acceptance Criteria and their associated Compliance Requirements and Certification Quality Assurance Requirements. The details of the major element of a Certification Program, namely, the Certification Plan, are described. The Certification Plan relies on supporting data and control documentation to provide a traceable, auditable account of certification activities. Examples of specific parts of the Certification Plan illustrate the recommended degree of detail. Also, a brief description of generic waste processes related to certification activities is included.

  10. SEVEN NEW BINARIES DISCOVERED IN THE KEPLER LIGHT CURVES THROUGH THE BEER METHOD CONFIRMED BY RADIAL-VELOCITY OBSERVATIONS

    SciTech Connect (OSTI)

    Faigler, S.; Mazeh, T.; Tal-Or, L. [School of Physics and Astronomy, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv 69978 (Israel); Quinn, S. N.; Latham, D. W. [Harvard-Smithsonian Center for Astrophysics, 60 Garden St., Cambridge, MA 02138 (United States)

    2012-02-20T23:59:59.000Z

    We present seven newly discovered non-eclipsing short-period binary systems with low-mass companions, identified by the recently introduced BEER algorithm, applied to the publicly available 138-day photometric light curves obtained by the Kepler mission. The detection is based on the beaming effect (sometimes called Doppler boosting), which increases (decreases) the brightness of any light source approaching (receding from) the observer, enabling a prediction of the stellar Doppler radial-velocity (RV) modulation from its precise photometry. The BEER algorithm identifies the BEaming periodic modulation, with a combination of the well-known Ellipsoidal and Reflection/heating periodic effects, induced by short-period companions. The seven detections were confirmed by spectroscopic RV follow-up observations, indicating minimum secondary masses in the range 0.07-0.4 M{sub Sun }. The binaries discovered establish for the first time the feasibility of the BEER algorithm as a new detection method for short-period non-eclipsing binaries, with the potential to detect in the near future non-transiting brown-dwarf secondaries, or even massive planets.

  11. Neutrino Scattering in a Newly Born Neutron Star

    E-Print Network [OSTI]

    Sanjay Reddy; Madappa Prakash

    1996-10-16T23:59:59.000Z

    We calculate neutrino cross sections from neutral current reactions in the dense matter encountered in the evolution of a newly born neutron star. Effects of composition and of strong interactions in the deleptonization and cooling phases of the evolution are studied. The influence of the possible presence of strangeness-rich hyperons on the neutrino scattering cross sections is explored. Due to the large vector couplings of the Sigma-minus and Cascade-minus, |C_V|~2, these particles, if present in protoneutron star matter, give significant contributions to neutrino scattering. In the deleptonization phase, the presence of strangeness leads to large neutrino energies, which results in large enhancements in the cross sections compared to those in matter with nucleons only. In the cooling phase, in which matter is nearly neutrino free, the response of the Sigma-minus hyperons to thermal neutrinos is the most significant. Neutrinos couple relatively weakly to the Lambda hyperons and, hence, their contributions are significant only at high density.

  12. Lesson Title: CDC Recommendations for Lead Poisoning Prevention in Newly Arrived Refugee Children: Medical Service Providers

    E-Print Network [OSTI]

    Lesson Title: CDC Recommendations for Lead Poisoning Prevention in Newly Arrived Refugee Children neurodevelopmental monitoring of children with elevated BLLs 8. Identify resources for lead poisoning prevention

  13. Gravitational Shapiro Telescope on the PSR's period to discover Dark Planets and Machos

    E-Print Network [OSTI]

    D. Fargion; R. Conversano

    2001-06-13T23:59:59.000Z

    Collective Shapiro Phase Shift on the period of the pulsars due to a dark object (a passing MACHO or a planet) along the line-of-sight of one or more pulsar is a formidable gravitational tool to discover dark matter.We already noted that the presence of a few negative PSRs period, possibly due to such a Shapiro delay, is roughly consistent with independent estimates of MACHOs observed by microlensing in our Galaxy. Here we update our study and suggest to verify and to calibrate the Shapiro phase delay to observe on ecliptic main known planetary and solar gravitational fields. Once the test is probed we propose to use, in a collective way, a subsample of PSRs on the ecliptic plane to monitor our solar system for discovering any heavy unknown object, either dark Macho or planets. The importance of such unknown possible planetary components and their eventual near encounter with Earth in the far past (or future) should be not neglected : the same life evolution (or extinction) might be marked by such a rare event.

  14. Mentoring and Job Training in the Field for Newly Trained Contractors |

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742Energy ChinaofSchaeferApril 1,(EAC) Richard2015 RD WorkshopEnergyMentee Profile

  15. Lesson Title: CDC Recommendations for Lead Poisoning Prevention in Newly Arrived Refugee Children: Refugee Resettlement Workers

    E-Print Network [OSTI]

    Lesson Title: CDC Recommendations for Lead Poisoning Prevention in Newly Arrived Refugee Children of newly arrived refugee families on lead poisoning prevention strategies. Learning Objectives: By the end, vitamin C, and calicum 8. Identify resources for lead poisoning prevention education and services

  16. STATE OF CALIFORNIA NEWLY CONSTRUCTED BUILDINGS AND ADDITIONS GREATER THAN 1,000 FT2

    E-Print Network [OSTI]

    STATE OF CALIFORNIA NEWLY CONSTRUCTED BUILDINGS AND ADDITIONS GREATER THAN 1,000 FT2 CEC- CF-1R Newly Constructed Buildings and Additions Greater Than 1,000 ft2 (Page 1 of 5) Project Name: Climate________ Project Type: New Building Construction New Addition1 greater than 1,000 ft2 1. Additions greater than 1

  17. THE MASSIVE DISTANT CLUSTERS OF WISE SURVEY: THE FIRST DISTANT GALAXY CLUSTER DISCOVERED BY WISE

    SciTech Connect (OSTI)

    Gettings, Daniel P.; Gonzalez, Anthony H.; Mancone, Conor [Department of Astronomy, University of Florida, 211 Bryant Space Center, Gainesville, FL 32611 (United States); Stanford, S. Adam [Institute of Geophysics and Planetary Physics, Lawrence Livermore National Laboratory, Livermore, CA 94550 (United States); Eisenhardt, Peter R. M.; Stern, Daniel [Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109 (United States); Brodwin, Mark [Department of Physics and Astronomy, University of Missouri, 5110 Rockhill Road, Kansas City, MO 64110 (United States); Zeimann, Gregory R. [Department of Physics, University of California, One Shields Avenue, Davis, CA 95616 (United States); Masci, Frank J. [Infrared Processing and Analysis Center, California Institute of Technology 100-22, Pasadena, CA 91125 (United States); Papovich, Casey [George P. and Cynthia Woods Mitchell Institute for Fundamental Physics and Astronomy, and Department of Physics and Astronomy, Texas A and M University, College Station, TX, 77843-4242 (United States); Tanaka, Ichi [Subaru Telescope, National Astronomical Observatory of Japan, 650 North A'ohoku Place, Hilo, HI 96720 (United States); Wright, Edward L. [UCLA Astronomy, P.O. Box 951547, Los Angeles, CA 90095-1547 (United States)

    2012-11-01T23:59:59.000Z

    We present spectroscopic confirmation of a z = 0.99 galaxy cluster discovered using data from the Wide-field Infrared Survey Explorer (WISE). This is the first z {approx} 1 cluster candidate from the Massive Distant Clusters of WISE Survey to be confirmed. It was selected as an overdensity of probable z {approx}> 1 sources using a combination of WISE and Sloan Digital Sky Survey DR8 photometric catalogs. Deeper follow-up imaging data from Subaru and WIYN reveal the cluster to be a rich system of galaxies, and multi-object spectroscopic observations from Keck confirm five cluster members at z = 0.99. The detection and confirmation of this cluster represents a first step toward constructing a uniformly selected sample of distant, high-mass galaxy clusters over the full extragalactic sky using WISE data.

  18. CDC Recommendations for Lead Poisoning Prevention in Newly Arrived Refugee Children

    E-Print Network [OSTI]

    CDC Recommendations for Lead Poisoning Prevention in Newly Arrived Refugee Children Lead poisoning remains one of the most common and preventable pediatric environmental conditions even though Poisoning Prevention Branch and Division of Global Migration and Quarantine, in collaboration

  19. Lab's Theory Group leader is one of two newly elected American...

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

    Rocco Schiavilla Interim Theory Group leader Rocco Schiavilla was elected a Fellow of the American Physical Society in 2002 JLab's Theory Group leader is one of two newly elected...

  20. Microsoft PowerPoint - Reporting data to the IAEA by a newly...

    National Nuclear Security Administration (NNSA)

    by a newly selected facility Gary Hirsch, NMMSS Brian Horn, NRC Carol Wormington, URENCO USA Friday June, 28, 2013 IAEA letter to the U.S. Government informing us that,...

  1. VARIABILITY SURVEY IN THE CoRoT SRa01 FIELD: IMPLICATIONS OF ECLIPSING BINARY DISTRIBUTION ON CLUSTER FORMATION IN NGC 2264

    SciTech Connect (OSTI)

    Klagyivik, P. [Konkoly Observatory, Research Centre for Astronomy and Earth Sciences, Hungarian Academy of Sciences, H-1121 Budapest XII, Konkoly Thege ut 15-17. (Hungary); Csizmadia, Sz.; Pasternacki, T.; Fruth, T.; Erikson, A.; Cabrera, J.; Eigmueller, P.; Kirste, S.; Rauer, H.; Titz-Weider, R. [Institut fuer Planetenforschung, Deutsches Zentrum fuer Luft- und Raumfahrt, Rutherfordstrasse 2, D-12489 Berlin (Germany); Chini, R.; Lemke, R. [Astronomisches Institut, Ruhr-Universitaet Bochum, D-44780 Bochum (Germany); Kabath, P. [European Southern Observatory, Alonso de Cordova 3107, Vitacura, Casilla 19001, Santiago (Chile); Murphy, M. [Depto. Fisica, Universidad Catolica del Norte, PO 1280, Antofagasta (Chile)

    2013-08-10T23:59:59.000Z

    Time-series photometry of the CoRoT field SRa01 was carried out with the Berlin Exoplanet Search Telescope II in 2008/2009. A total of 1161 variable stars were detected, of which 241 were previously known and 920 are newly found. Several new, variable young stellar objects have been discovered. The study of the spatial distribution of eclipsing binaries revealed the higher relative frequency of Algols toward the center of the young open cluster NGC 2264. In general Algol frequency obeys an isotropic distribution of their angular momentum vectors, except inside the cluster, where a specific orientation of the inclinations is the case. We suggest that we see the orbital plane of the binaries almost edge-on.

  2. Resource assessment and profitability from discovering rate forecasting

    SciTech Connect (OSTI)

    Zorbalas, K.; Rogers, R.E. (Mississippi State Univ., Mississippi State, MS (United States))

    1993-09-01T23:59:59.000Z

    A partially explored basin, in trying economic times such as the present, experiences a slowdown in activity that leaves the state, industry, and all concerned questioning whether undiscovered fields of sufficient size and quantity remain in the basin to justify further exploration. Questions that need to be answered concern the finding costs, development costs, and ultimate profitability associated with potential discoveries. A discovery process model was used to answer these questions by analyzing the Black Warrior basin of Mississippi for the number and size distribution of undiscovered natural gas fields remaining; and economic analysis then detailed costs and ultimate profitability of their development. Extensive historical data from the basin was analyzed and the log normal distribution of fields was categorized into nine class sizes. The Drew/Scheunemeyer discovery process model predicted 43 undiscovered fields in class sizes with economical potential for development having 150 bcf of gas reserves; approximately 300 exploratory wells could be drilled in the basin with expectations of attractive profitabilities from field discoveries. Rates of return were determined for four gas-price scenarios, and the conditions were revealed for profitable development of the undiscovered fields. By using the method in any partly explored basin, one can foresee the economic justification for further exploratory drilling and foresee economic benefits from eventual production of the potential fields. The analysis method is the most thorough and informative that can be made on a basin having the potential of additional gas field discoveries. As exploration becomes more selective, the technique could be a valuable tool to any exploration program.

  3. Discovering the QCD Axion with Black Holes and Gravitational Waves

    E-Print Network [OSTI]

    Asimina Arvanitaki; Masha Baryakhtar; Xinlu Huang

    2015-03-23T23:59:59.000Z

    Advanced LIGO may be the first experiment to detect gravitational waves. Through superradiance of stellar black holes, it may also be the first experiment to discover the QCD axion with decay constant above the GUT scale. When an axion's Compton wavelength is comparable to the size of a black hole, the axion binds to the black hole, forming a "gravitational atom." Through the superradiance process, the number of axions occupying the bound levels grows exponentially, extracting energy and angular momentum from the black hole. Axions transitioning between levels of the gravitational atom and axions annihilating to gravitons can produce observable gravitational wave signals. The signals are long-lasting, monochromatic, and can be distinguished from ordinary astrophysical sources. We estimate up to O(1) transition events at aLIGO for an axion between 10^-11 and 10^-10 eV and up to 10^4 annihilation events for an axion between 10^-13 and 10^-11 eV. In the event of a null search, aLIGO can constrain the axion mass for a range of rapidly spinning black hole formation rates. Axion annihilations are also promising for much lighter masses at future lower-frequency gravitational wave observatories; the rates have large uncertainties, dominated by supermassive black hole spin distributions. Our projections for aLIGO are robust against perturbations from the black hole environment and account for our updated exclusion on the QCD axion of 6*10^-13 eV < ma < 2*10^-11 eV suggested by stellar black hole spin measurements.

  4. E-Print Network 3.0 - automatically discovering hidden Sample...

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

    for: automatically discovering hidden Page: << < 1 2 3 4 5 > >> 1 Siphoning Hidden-Web Data through Keyword-Based Interfaces Summary: automatically reconstruct a collection...

  5. Design and Implementation of a Facility for Discovering New Scintillator Materials

    E-Print Network [OSTI]

    Derenzo, Stephen E

    2008-01-01T23:59:59.000Z

    new Ce-doped gamma detector materials,” IEEE Nuclear ScienceDiscovering New Scintillator Materials Stephen E. Derenzo,scintillator detector materials. This facility consists of:

  6. Orbit Correction for the Newly Developed Polarization-Switching Undulator

    SciTech Connect (OSTI)

    Obina, Takashi; Honda, Tohru; Shioya, Tatsuro; Kobayashi, Yukinori; Tsuchiya, Kimichika [Photon Factory, Institute of Materials Structure Science, High Energy Accelerator Research Organization, KEK, 1-1 Oho, Tsukuba, Ibaraki 305-0801 (Japan); Yamamoto, Shigeru [Photon Factory, Institute of Materials Structure Science, High Energy Accelerator Research Organization, KEK, 1-1 Oho, Tsukuba, Ibaraki 305-0801 (Japan); Department of Photoscience, Graduate University for Advanced Studies, Shonan Village, Hayama, Kanagawa 240-0193 (Japan)

    2007-01-19T23:59:59.000Z

    A new scheme of undulator magnet arrangements has been proposed and developed as a polarization-switching radiation source, and its test-stand was installed in the 2.5-GeV Photon Factory storage ring (PF ring) in order to investigate the effects on the beam orbit. The closed orbit distortion (COD) over 200 {mu}m was produced in a vertical direction when we switched the polarization of the radiation from the test-stand. In a horizontal direction, the COD was less than 50{mu}m. The results agreed well with the predictions from the magnetic-field measurement on the bench. In order to suppress the CODs and realize a stable operation of the ring with the polarization-switching, we developed an orbit correction system which consists of an encoder to detect motion of magnets, a pair of beam position monitors (BPMs), signal processing parts, and a pair of steering magnets. We succeeded in suppressing the CODs to the level below 3{mu}m using the system even when we switch the polarization at a maximum frequency of 0.8 Hz.

  7. The fate of fallback matter around newly Born compact objects

    SciTech Connect (OSTI)

    Perna, Rosalba [JILA and Department of Astrophysical and Planetary Sciences, University of Colorado, 440 UCB, Boulder, CO 80309-0440 (United States); Duffell, Paul; MacFadyen, Andrew I. [Center for Cosmology and Particle Physics, Department of Physics, New York University, 4 Washington Place, New York, NY 10003 (United States); Cantiello, Matteo, E-mail: rosalba@jilau1.colorado.edu [Kavli Institute for Theoretical Physics, University of California, Santa Barbara, Kohn Hall, CA 93106 (United States)

    2014-02-01T23:59:59.000Z

    The presence of fallback disks around young neutron stars (NSs) has been invoked over the years to explain a large variety of phenomena. Here we perform a numerical investigation of the formation of such disks during a supernova (SN) explosion, considering both NS and black hole (BH) remnants. Using the public code MESA, we compute the angular momentum distribution of the pre-SN material, for stars with initial masses M in the range 13-40 M {sub ?}, initial surface rotational velocities v {sub surf} between 25% and 75% of the critical velocity, and for metallicities Z of 1%, 10%, and 100% of the solar value. These pre-SN models are exploded with energies E varying between 10{sup 50}-3 × 10{sup 52} erg, and the amount of fallback material is computed. We find that, if magnetic torques play an important role in angular momentum transport, then fallback disks around NSs, even for low-metallicity main-sequence stars, are not an outcome of SN explosions. Formation of such disks around young NSs can only happen under the condition of negligible magnetic torques and a fine-tuned explosion energy. For those stars that leave behind BH remnants, disk formation is ubiquitous if magnetic fields do not play a strong role; however, unlike the NS case, even with strong magnetic coupling in the interior, a disk can form in a large region of the Z, M, v {sub surf}, E parameter space. Together with the compact, hyperaccreting fallback disks widely discussed in the literature, we identify regions in the above parameter space that lead to extended, long-lived disks around BHs. We find that the physical conditions in these disks may be conducive to planet formation, hence leading to the possible existence of planets orbiting BHs.

  8. Probe, Cluster, and Discover: Focused Extraction of QA-Pagelets from the Deep Web

    E-Print Network [OSTI]

    Liu, Ling

    Probe, Cluster, and Discover: Focused Extraction of QA-Pagelets from the Deep Web James Caverlee mining system for discovering and extracting QA- Pagelets from the Deep Web. A unique feature of THOR is its two-phase extraction framework. In the first phase, pages from a deep web site are grouped

  9. Discovering Novel Attack Strategies from INFOSEC Xinzhou Qin and Wenke Lee

    E-Print Network [OSTI]

    Lee, Wenke

    Discovering Novel Attack Strategies from INFOSEC Alerts Xinzhou Qin and Wenke Lee College. Correlating security alerts and discovering attack strategies are impor- tant and challenging tasks for security analysts. Recently, there have been several proposed techniques to analyze attack scenarios from

  10. Assembly free comparative genomics of short-read sequence data discovers the needles in the haystack

    E-Print Network [OSTI]

    Assembly free comparative genomics of short-read sequence data discovers the needles of Biological Sciences, Texas Tech University, Lubbock, TX 79409, USA Abstract Most comparative genomic analyses an assembly free analysis of SRS data that discovers sequence variants among focal genomes by tabulating

  11. Four magnetic DB white dwarfs discovered by the Hamburg/ESO survey

    E-Print Network [OSTI]

    D. Reimers; S. Jordan; V. Beckmann; N. Christlieb; L. Wisotzki

    1998-07-14T23:59:59.000Z

    We report on seven peculiar faint blue stars found in the course of the Hamburg/ESO survey (HES) which appear to be magnetic white dwarfs (WDs) with non-hydrogen spectra. We show in particular that four of them (HE 0338-3853, HE 0107-0158, HE 0026-2150, and HE 0003-5701) have He I lines split by magnetic fields of roughly 20MG, since the \\pi components of He I 5876 Angstroem and He I 4929 Angstroem can be identified unambiguously in their spectra, and the $\\sigma^+$, $\\sigma^-$ components can be identified in the spectra of two of these stars (HE 0338-3853 and HE 0003-5701). Besides GD 229, these are the first magnetic DB white dwarfs discovered so far. In addition, three further WDs with broad, unidentifiable features have been found: HE 1043-0502, HE 0236-2656, and HE 0330-0002. We argue that in all three of these stars H I can not be responsible for the broad features, and He I most probably not for the features in HE 0236-2656 and HE 0330-0002, while it still remains possible that the broad features of HE 1043-0502 are due to He I.

  12. Fermilab | Newsroom | Press Releases | Fermilab experiment discovers a

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField8,Dist.New Mexico Feb. 13, 2013Focus GroupDown as FermilabShowheavy

  13. Fermilab | Newsroom | Press Releases | June 28, 2012: Scientists discover

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField8,Dist.New Mexico Feb. 13, 2013Focus GroupDown asbolstersthat Milky Way

  14. Final Technical Report: Discovering the Nature of Dark Energy: Towards

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField8,Dist.New Mexico Feb.Information 91,Security Complex |

  15. The net carbon footprint of a newly created boreal hydroelectric reservoir

    E-Print Network [OSTI]

    Long, Bernard

    The net carbon footprint of a newly created boreal hydroelectric reservoir Cristian R. Teodoru,1 present here the first comprehensive assessment of the carbon (C) footprint associated with the creation-term at rates exceeding the carbon footprint of the pre-flood landscape, although the sources of C supporting

  16. Recycling Evaluation of Newly Developed Environmentally Benign Pressure Sensitive Adhesive for Postage Applications

    E-Print Network [OSTI]

    Abubakr, Said

    Recycling Evaluation of Newly Developed Environmentally Benign Pressure Sensitive Adhesive stamp products that can be successfully recycled into fine paper products in a typical recycling additional burden on plants that are using recycled fiber. As a result of an initiative by the USPS, a team

  17. Risk Analysis of Phytophthora ramorum, a Newly Recognised Pathogen Threat to Europe

    E-Print Network [OSTI]

    Risk Analysis of Phytophthora ramorum, a Newly Recognised Pathogen Threat to Europe and the Cause; 23rd January 2009) Deliverable Report D28 Report on the risk of entry, establishment, spread OF TABLES LIST OF FIGURES LIST OF PARTICIPANTS AND CONTRIBUTORS 3 5 6 SUMMARY: PEST RISK ANALYSIS

  18. A hair bundle proteomics approach to discovering actin regulatory proteins in inner ear stereocilia

    E-Print Network [OSTI]

    Peng, Anthony Wei

    2009-01-01T23:59:59.000Z

    Because there is little knowledge in the areas of stereocilia development, maintenance, and function in the hearing system, I decided to pursue a proteomics-based approach to discover proteins that play a role in stereocilia ...

  19. Llifelog : discovering and evaluating research projects through peer-to-peer exchange

    E-Print Network [OSTI]

    Bian, Li, S.M. Massachusetts Institute of Technology

    2012-01-01T23:59:59.000Z

    Llifelog is a web platform for discovering, evaluating, and exchanging research projects among students and researchers from both academia and industry. The goal of Llifelog is foster a community of critique among students ...

  20. TIMING AND INTERSTELLAR SCATTERING OF 35 DISTANT PULSARS DISCOVERED IN THE PALFA SURVEY

    E-Print Network [OSTI]

    Popa, Laura Cornelia

    We have made extensive observations of 35 distant slow (non-recycled) pulsars discovered in the ongoing Arecibo PALFA pulsar survey. Timing observations of these pulsars over several years at Arecibo Observatory and Jodrell ...

  1. GRB 020410: A Gamma-ray burst afterglow discovered by its supernova light

    E-Print Network [OSTI]

    2004-01-01T23:59:59.000Z

    Training Network “Gamma-Ray Bursts: An Enigma and a Tool”,Journal GRB 020410: A Gamma-Ray Burst Afterglow DiscoveredSubject headings: gamma rays: bursts – supernova: general

  2. Corrosion behavior of newly developed TiAgFe dental alloys in neutral saline solution

    E-Print Network [OSTI]

    Zheng, Yufeng

    Corrosion behavior of newly developed Ti­Ag­Fe dental alloys in neutral saline solution B. B. Zhang, B. L. Wang, L. Li and Y. F. Zheng* The corrosion behavior of Ti­5Ag­xFe alloys (x ¼ 1, 2.5, 5 wt) Ti,Ti­ 5Ag­xFe alloys exhibited higher corrosion potentials, lower current densities, and larger

  3. NEWLY IDENTIFIED EXTENDED GREEN OBJECTS (EGOs) FROM THE SPITZER GLIMPSE II SURVEY. II. MOLECULAR CLOUD ENVIRONMENTS

    SciTech Connect (OSTI)

    Chen Xi; Gan Conggui; Shen Zhiqiang [Key Laboratory for Research in Galaxies and Cosmology, Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai 200030 (China); Ellingsen, Simon P.; Titmarsh, Anita [School of Mathematics and Physics, University of Tasmania, Hobart, Tasmania (Australia); He Jinhua, E-mail: chenxi@shao.ac.cn [Key Laboratory for the Structure and Evolution of Celestial Objects, Yunnan Astronomical Observatory/National Astronomical Observatory, Chinese Academy of Sciences, P.O. Box 110, Kunming 650011, Yunnan Province (China)

    2013-06-01T23:59:59.000Z

    We have undertaken a survey of molecular lines in the 3 mm band toward 57 young stellar objects using the Australia Telescope National Facility Mopra 22 m radio telescope. The target sources were young stellar objects with active outflows (extended green objects (EGOs)) newly identified from the GLIMPSE II survey. We observe a high detection rate (50%) of broad line wing emission in the HNC and CS thermal lines, which combined with the high detection rate of class I methanol masers toward these sources (reported in Paper I) further demonstrates that the GLIMPSE II EGOs are associated with outflows. The physical and kinematic characteristics derived from the 3 mm molecular lines for these newly identified EGOs are consistent with these sources being massive young stellar objects with ongoing outflow activity and rapid accretion. These findings support our previous investigations of the mid-infrared properties of these sources and their association with other star formation tracers (e.g., infrared dark clouds, methanol masers and millimeter dust sources) presented in Paper I. The high detection rate (64%) of the hot core tracer CH{sub 3}CN reveals that the majority of these new EGOs have evolved to the hot molecular core stage. Comparison of the observed molecular column densities with predictions from hot core chemistry models reveals that the newly identified EGOs from the GLIMPSE II survey are members of the youngest hot core population, with an evolutionary time scale of the order of 10{sup 3} yr.

  4. A Generalized Bio-inspired Method for Discovering Sequence-based Signatures

    SciTech Connect (OSTI)

    Peterson, Elena S.; Curtis, Darren S.; Phillips, Aaron R.; Teuton, Jeremy R.; Oehmen, Christopher S.

    2013-06-07T23:59:59.000Z

    Many phenomena that we wish to discover are comprised of sequences of events or event primitives. Often signatures are constructed to identify such phenomena using either distributions or frequencies of attributes, or specific subsequences that are known to correlate to the phenomena. Distribution-based identification does not capture the essence of the sequence of behaviors and therefore may suffer from lack of specificity. At the other extreme, using specific subsequences to identify target phenomena is often too specific and suffers from lower sensitivity when natural variations arise in the phenomena, measuring process, or data analysis. We introduce here a method for discovering signatures for phenomena that are well characterized by sequences of event primitives. In this paper, we describe the steps taken and lessons learned in generalizing a sequence analysis method, BLAST, for use on non-biological datasets including expressing and operating on alphabets of varying length, constructing a reward/penalty model for arbitrary datasets, and discovering low complexity segments in sequence data by extending BLAST’s native low-complexity estimating algorithms. We also present several case studies that demonstrate the utility of this method to discovering signatures in a wide array of applications including network traffic, software analysis, server characterization, and others. Finally, we demonstrate how signatures discovered using this method can be expressed using a variety of model formalisms, each having its own relative benefit.

  5. Vasoactive intestinal polypeptide and thyrotropin-releasing hormone stimulate newly synthesized, not stored, prolactin

    SciTech Connect (OSTI)

    Maas, D.L.; Arnaout, M.A.; Martinson, D.R.; Erdmann, M.D.; Hagen, T.C. (Medical College of Wisconsin, Milwaukee (USA))

    1991-02-01T23:59:59.000Z

    Experiments were designed to determine whether vasoactive intestinal polypeptide (VIP), reported to stimulate basal PRL secretion, affects PRL processing by lactotrophs. Initially, rat anterior pituitary quarters were incubated for 2 h with (3H)leucine, with and without 10(-5) M VIP, and immunoreactive and immunoprecipitable rPRL were measured during 56 mM KCl perifusion to determine total and 3H-labeled PRL, respectively. Inclusion of VIP increased immunoreactive PRL, decreased immunoprecipitable PRL, and, therefore, decreased the specific activity of labeled PRL. These results suggested an enhanced release of newly synthesized PRL before KCl depolarization, thus decreasing the release of labeled PRL. To discriminate between the two PRL pools, newly synthesized and storage, pituitary quarters were incubated with and without 10(-5) M VIP for 4 h with (14C)leucine, 2 h in cold medium and 2 h with (3H)leucine. Immunoprecipitable PRL was measured during perifusion with 56 mM KCl. Data were depicted as the 3H/14C disintegrations per min ratio of PRL released/3H/14C disintegrations per min of total tissue to account for any differences in tissue labeling. This ratio was greater for tissue labeled in the presence of VIP. To determine whether VIP, as a secretagogue, differentiates between the newly synthesized and storage pools, VIP was added after pulse chase, as previously described. No preferential release was observed between the two groups. Finally, using the same (3H)- and (14C)leucine-labeling protocol with and without 10(-5) M VIP, tissue was perifused with medium 199 for 1 h, with 10(-5) M TRH for 30 min, with medium 199 for 30 min, and with 56 mM KCl for 1 h. Inclusion of VIP increased the 3H/14C released/3H/14C total tissue ratio during basal perifusion and TRH exposure.

  6. PROPERTIES OF NEWLY FORMED DUST GRAINS IN THE LUMINOUS TYPE IIn SUPERNOVA 2010jl

    SciTech Connect (OSTI)

    Maeda, K.; Nozawa, T.; Folatelli, G.; Moriya, T. J.; Nomoto, K.; Bersten, M.; Quimby, R. [Kavli Institute for the Physics and Mathematics of the Universe (WPI), Todai Institutes for Advanced Study, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8583 (Japan); Sahu, D. K.; Anupama, G. C. [Indian Institute of Astrophysics, Koramangala, Bangalore 560 034 (India); Minowa, Y.; Pyo, T.-S. [Subaru Telescope, National Astronomical Observatory of Japan, 650 North A'ohoku Place, Hilo, HI 96720 (United States); Motohara, K.; Kitagawa, Y. [Institute of Astronomy, University of Tokyo, 2-21-1 Osawa, Mitaka, Tokyo 181-0015 (Japan); Ueno, I.; Kawabata, K. S.; Yamanaka, M. [Hiroshima Astrophysical Science Center, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526 (Japan); Kozasa, T. [Department of Cosmosciences, Graduate School of Science, Hokkaido University, Sapporo 060-0810 (Japan); Iye, M., E-mail: keiichi.maeda@ipmu.jp [National Astronomical Observatory, Mitaka, Tokyo (Japan)

    2013-10-10T23:59:59.000Z

    Supernovae (SNe) have been proposed to be the main production sites of dust grains in the universe. However, our knowledge of their importance to dust production is limited by observationally poor constraints on the nature and amount of dust particles produced by individual SNe. In this paper, we present a spectrum covering optical through near-Infrared (NIR) light of the luminous Type IIn supernova 2010jl around one and a half years after the explosion. This unique data set reveals multiple signatures of newly formed dust particles. The NIR portion of the spectrum provides a rare example where thermal emission from newly formed hot dust grains is clearly detected. We determine the main population of the dust species to be carbon grains at a temperature of ?1350-1450 K at this epoch. The mass of the dust grains is derived to be ?(7.5-8.5) × 10{sup –4} M{sub ?}. Hydrogen emission lines show wavelength-dependent absorption, which provides a good estimate of the typical size of the newly formed dust grains (?< 0.1 ?m, and most likely ?< 0.01 ?m). We believe the dust grains were formed in a dense cooling shell as a result of a strong SN-circumstellar media (CSM) interaction. The dust grains occupy ?10% of the emitting volume, suggesting an inhomogeneous, clumpy structure. The average CSM density must be ?> 3 × 10{sup 7} cm{sup –3}, corresponding to a mass loss rate of ?> 0.02 M{sub ?} yr{sup –1} (for a mass loss wind velocity of ?100 km s{sup –1}). This strongly supports a scenario in which SN 2010jl and probably other luminous SNe IIn are powered by strong interactions within very dense CSM, perhaps created by Luminous-Blue-Variable-like eruptions within the last century before the explosion.

  7. Two superluminous supernovae from the early universe discovered by the supernova legacy survey

    SciTech Connect (OSTI)

    Howell, D. A. [Las Cumbres Observatory Global Telescope Network, 6740 Cortona Drive, Suite 102, Goleta, CA 93117 (United States); Kasen, D. [Departments of Physics and Astronomy, University of California, Berkeley, Berkeley, CA 94720-7300 (United States); Lidman, C. [Australian Astronomical Observatory, P.O. Box 915, North Ryde, NSW 1670 (Australia); Sullivan, M. [School of Physics and Astronomy, University of Southampton, Southampton SO17 1BJ (United Kingdom); Conley, A. [Center for Astrophysics and Space Astronomy, University of Colorado, 389 UCB, Boulder, CO 80309-389 (United States); Astier, P.; Balland, C.; Guy, J.; Hardin, D.; Pain, R.; Regnault, N. [LPNHE, CNRS-IN2P3 and University of Paris VI and VII, F-75005 Paris (France); Carlberg, R. G. [Department of Astronomy and Astrophysics, University of Toronto, 50 St. George Street, Toronto, ON M5S 3H8 (Canada); Fouchez, D. [CPPM, CNRS-IN2P3 and University Aix Marseille II, Case 907, F-13288 Marseille Cedex 9 (France); Palanque-Delabrouille, N.; Rich, J.; Ruhlmann-Kleider, V. [DSM/IRFU/SPP, CEA-Saclay, F-91191 Gif-sur-Yvette (France); Perrett, K. [DRDC Ottawa, 3701 Carling Avenue, Ottawa, ON K1A 0Z4 (Canada); Pritchet, C. J. [Department of Physics and Astronomy, University of Victoria, P.O. Box 3055, Victoria, BC V8W 3P6 (Canada)

    2013-12-20T23:59:59.000Z

    We present spectra and light curves of SNLS 06D4eu and SNLS 07D2bv, two hydrogen-free superluminous supernovae (SNe) discovered by the Supernova Legacy Survey. At z = 1.588, SNLS 06D4eu is the highest redshift superluminous SN with a spectrum, at M{sub U} = –22.7 it is one of the most luminous SNe ever observed, and it gives a rare glimpse into the rest-frame ultraviolet where these SNe put out their peak energy. SNLS 07D2bv does not have a host galaxy redshift, but on the basis of the SN spectrum, we estimate it to be at z ? 1.5. Both SNe have similar observer-frame griz light curves, which map to rest-frame light curves in the U band and UV, rising in ?20 rest-frame days or longer and declining over a similar timescale. The light curves peak in the shortest wavelengths first, consistent with an expanding blackbody starting near 15,000 K and steadily declining in temperature. We compare the spectra with theoretical models, and we identify lines of C II, C III, Fe III, and Mg II in the spectra of SNLS 06D4eu and SCP 06F6 and find that they are consistent with an expanding explosion of only a few solar masses of carbon, oxygen, and other trace metals. Thus, the progenitors appear to be related to those suspected for SNe Ic. A high kinetic energy, 10{sup 52} erg, is also favored. Normal mechanisms of powering core-collapse or thermonuclear SNe do not seem to work for these SNe. We consider models powered by {sup 56}Ni decay and interaction with circumstellar material, but we find that the creation and spin-down of a magnetar with a period of 2 ms, a magnetic field of 2 × 10{sup 14} G, and a 3 M {sub ?} progenitor provides the best fit to the data.

  8. (Re)discovering the Social Responsibility of Business in Germany Ariane Berthoin Antal

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1 (Re)discovering the Social Responsibility of Business in Germany Ariane Berthoin Antal Professor The concept of corporate social responsibility (CSR) is a relatively recent addition to the agenda in Germany agreements. But the past decade has seen significant changes in Germany, challenging established ways

  9. NREL researchers discover ways to increase accuracy in building energy simulations tools to improve predictions of

    E-Print Network [OSTI]

    the wall cavities were not insulated during construction or where the insulating material has settled properties of building materials, insulation levels, and the temperature dependence of conduction throughNREL researchers discover ways to increase accuracy in building energy simulations tools to improve

  10. Larmor radius size density holes discovered in the solar wind upstream of Earth's bow shock

    E-Print Network [OSTI]

    California at Berkeley, University of

    Larmor radius size density holes discovered in the solar wind upstream of Earth's bow shock G. K. Cao Key Laboratory for Space Weather, CSSAR, CAS, Beijing, China K. Meziane Physics Department that are five or more times the solar wind density. Particle distributions show the steepened edge can behave

  11. Germany's top technical university --a global career destination Discover TUM. The Entrepreneurial University.

    E-Print Network [OSTI]

    Cai, Long

    Germany's top technical university -- a global career destination Discover TUM. The Entrepreneurial and technology, engaged with society and open to the world. Consistently ranked by far number 1 among Germany personal invitation: Find out more about Germany's "entrepreneurial university" in Munich, and consider

  12. CHAPTER 13. ACID RAIN Acid rain was discovered in the 19th century by Robert Angus

    E-Print Network [OSTI]

    Jacob, Daniel J.

    247 CHAPTER 13. ACID RAIN Acid rain was discovered in the 19th century by Robert Angus Smith, a pharmacist from Manchester (England), who measured high levels of acidity in rain falling over industrial decline of fish populations in the lakes of southern Norway and traced the problem to acid rain. Similar

  13. Discovering Interesting Relationships among Deep Web Databases: A Source-Biased Approach

    E-Print Network [OSTI]

    Caverlee, James

    Discovering Interesting Relationships among Deep Web Databases: A Source-Biased Approach James # Springer Science + Business Media, LLC 2006 Abstract The escalation of deep web databases has been- ships among available deep web databases. Unlike the Bsurface^ web of static pages, these deep web

  14. Discovering Real-World Use Cases for a Multimodal Math Search Interface

    E-Print Network [OSTI]

    Zanibbi, Richard

    expressions as search terms would be useful [14], and found it sufficient to lookup formulas, metricsDiscovering Real-World Use Cases for a Multimodal Math Search Interface Keita Del Valle Wangari 14623 +1 585-475-7531 axasma@rit.edu ABSTRACT To use math expressions in search, current search engines

  15. Discovering Evolutionary Theme Patterns from Text -An Exploration of Temporal Text Mining

    E-Print Network [OSTI]

    Zhai, ChengXiang

    through (1) discovering latent themes from text; (2) constructing an evolution graph of themes; and (3 to the underlying thematic structures. Consider, for example, the Asian tsunami disaster that happened in the end would include both the major subtopics about the event and any threads corresponding to the evolution

  16. Visualizing and Discovering Web Navigational Patterns Jiyang Chen, Lisheng Sun, Osmar R. Zaiane, Randy Goebel

    E-Print Network [OSTI]

    Zaiane, Osmar R.

    Visualizing and Discovering Web Navigational Patterns Jiyang Chen, Lisheng Sun, Osmar R. Za, lisheng, zaiane, goebel}@cs.ualberta.ca ABSTRACT Web site structures are complex to analyze. Cross-referencing the web structure with navigational behaviour adds to the complexity of the analysis. However

  17. FIRST PRESOLAR SILICATE DISCOVERED IN AN ANTARCTIC MICROMETEORITE. , F. J. Stadermann1

    E-Print Network [OSTI]

    FIRST PRESOLAR SILICATE DISCOVERED IN AN ANTARCTIC MICROMETEORITE. T. Yada1,2 , F. J. Stadermann1 matter which has become a building block of our solar system. Recently, presolar silicates have been presolar silicate phase from an Antarctic micrometeorite (AMM). Samples and Methods: AMMs analyzed

  18. Discovering Factions in the Computational Linguistics Community Yanchuan Sim Noah A. Smith

    E-Print Network [OSTI]

    Smith, David A.

    Discovering Factions in the Computational Linguistics Community Yanchuan Sim Noah A. Smith Language of the words they use to do the citing. The model reveals latent factions, or groups of in- dividuals whom we expect to collaborate more closely within their faction, cite within the fac- tion using language

  19. MS/NMR: A Structure-Based Approach for Discovering Protein Ligands and for Drug Design

    E-Print Network [OSTI]

    Powers, Robert

    MS/NMR: A Structure-Based Approach for Discovering Protein Ligands and for Drug Design by Coupling to bind a target protein while obtaining structure-related information as part of a struc- ture-based drug for drug discovery is the utilization of a biological assay to screen a large library of compounds (>100

  20. Determination of Godiva`s effective delayed neutron fraction using newly calculated delayed neutron spectra

    SciTech Connect (OSTI)

    Spriggs, G.D.; Campbell, J.M. [Los Alamos National Lab., NM (United States); Busch, R.D. [Univ. of New Mexico, Albuquerque, NM (United States)

    1999-09-01T23:59:59.000Z

    When calculating the effective delayed neutron fraction {beta}{sub eff} for a given reactor system, the assumed delayed neutron group spectra and the assumed number of delayed neutrons born per fission {nu}{sub d} can have a major impact on the final value. Over the years, the recommended values for the delayed neutron spectra and for {nu}{sub d} have slowly changed. To ascertain whether or not these changes have increased the accuracy of {beta}{sub eff} calculations in fast {sup 235}U systems, the authors have reevaluated {beta}{sub eff} for the benchmark system Godiva-I using newly calculated delayed neutron spectra and Tuttle`s recommended values of {nu}{sub d} for both {sup 235}U and {sup 238}U.

  1. Discover Math Dept, Nagoya University: -----How to study Math. in JAPAN-----

    E-Print Network [OSTI]

    Takahashi, Ryo

    Discover Math Dept, Nagoya University: -----How to study Math. in JAPAN----- Date & Time: November://www.nushanghai.provost.nagoya-u.ac.jp/ A variety of information and advice for your study abroad in Japan will be provided. Currently the following of Mathematics Nagoya University Chikusa-ku, Nagoya 464-8602 Japan shien@math.nagoya-u.ac.jp +81 (0)52 789 2833

  2. Strategy for discovering a low-mass Higgs boson at the Fermilab Tevatron Pushpalatha C. Bhat

    E-Print Network [OSTI]

    Bhat, Pushpalatha

    Strategy for discovering a low-mass Higgs boson at the Fermilab Tevatron Pushpalatha C. Bhat Fermi-mass standard model Higgs boson, during run II, via the processes ppÂŻWHl bbÂŻ, ppÂŻZH l l bbÂŻ and ppÂŻZH ÂŻbbÂŻ. We conventional analysis, in the integrated luminosity required to find a standard model Higgs boson in the mass

  3. IMPROVED VARIABLE STAR SEARCH IN LARGE PHOTOMETRIC DATA SETS: NEW VARIABLES IN CoRoT FIELD LRa02 DETECTED BY BEST II

    SciTech Connect (OSTI)

    Fruth, T.; Cabrera, J.; Csizmadia, Sz.; Eigmueller, P.; Erikson, A.; Kirste, S.; Pasternacki, T.; Rauer, H.; Titz-Weider, R. [Institut fuer Planetenforschung, Deutsches Zentrum fuer Luft- und Raumfahrt, Rutherfordstr. 2, 12489 Berlin (Germany); Kabath, P. [European Southern Observatory, Alonso de Cordova 3107, Vitacura, Casilla 19001, Santiago 19 (Chile); Chini, R.; Lemke, R. [Astronomisches Institut, Ruhr-Universitaet Bochum, 44780 Bochum (Germany); Murphy, M., E-mail: thomas.fruth@dlr.de [Depto. Fisica, Universidad Catolica del Norte, PO 1280, Antofagasta (Chile)

    2012-06-15T23:59:59.000Z

    The CoRoT field LRa02 has been observed with the Berlin Exoplanet Search Telescope II (BEST II) during the southern summer 2007/2008. A first analysis of stellar variability led to the publication of 345 newly discovered variable stars. Now, a deeper analysis of this data set was used to optimize the variability search procedure. Several methods and parameters have been tested in order to improve the selection process compared to the widely used J index for variability ranking. This paper describes an empirical approach to treat systematic trends in photometric data based upon the analysis of variance statistics that can significantly decrease the rate of false detections. Finally, the process of reanalysis and method improvement has virtually doubled the number of variable stars compared to the first analysis by Kabath et al. A supplementary catalog of 272 previously unknown periodic variables plus 52 stars with suspected variability is presented. Improved ephemerides are given for 19 known variables in the field. In addition, the BEST II results are compared with CoRoT data and its automatic variability classification.

  4. Phase II Trial of Hypofractionated IMRT With Temozolomide for Patients With Newly Diagnosed Glioblastoma Multiforme

    SciTech Connect (OSTI)

    Reddy, Krishna [Department of Radiation Oncology, University of Colorado School of Medicine, Aurora, Colorado (United States)] [Department of Radiation Oncology, University of Colorado School of Medicine, Aurora, Colorado (United States); Damek, Denise [Department of Neurology, University of Colorado School of Medicine, Aurora, Colorado (United States)] [Department of Neurology, University of Colorado School of Medicine, Aurora, Colorado (United States); Gaspar, Laurie E. [Department of Radiation Oncology, University of Colorado School of Medicine, Aurora, Colorado (United States)] [Department of Radiation Oncology, University of Colorado School of Medicine, Aurora, Colorado (United States); Ney, Douglas [Department of Neurology, University of Colorado School of Medicine, Aurora, Colorado (United States)] [Department of Neurology, University of Colorado School of Medicine, Aurora, Colorado (United States); Waziri, Allen; Lillehei, Kevin [Department of Neurosurgery, University of Colorado School of Medicine, Aurora, Colorado (United States)] [Department of Neurosurgery, University of Colorado School of Medicine, Aurora, Colorado (United States); Stuhr, Kelly; Kavanagh, Brian D. [Department of Radiation Oncology, University of Colorado School of Medicine, Aurora, Colorado (United States)] [Department of Radiation Oncology, University of Colorado School of Medicine, Aurora, Colorado (United States); Chen Changhu, E-mail: changhu.chen@ucdenver.edu [Department of Radiation Oncology, University of Colorado School of Medicine, Aurora, Colorado (United States)

    2012-11-01T23:59:59.000Z

    Purpose: To report toxicity and overall survival (OS) in patients with newly diagnosed glioblastoma multiforme (GBM) treated with hypofractionated intensity-modulated radiotherapy (hypo-IMRT) with concurrent and adjuvant temozolomide (TMZ). Methods and Materials: Patients with newly diagnosed GBM after biopsy or resection and with adequate performance status and organ or bone marrow function were eligible for this study. Patients received postoperative hypo-IMRT to the surgical cavity and residual tumor seen on T1-weighted brain MRI with a 5-mm margin to a total dose of 60 Gy in 10 fractions (6 Gy/fraction) and to the T2 abnormality on T2-weighted MRI with 5-mm margin to 30 Gy in 10 fractions (3 Gy/fraction). Concurrent TMZ was given at 75 mg/m{sup 2}/day for 28 consecutive days. Adjuvant TMZ was given at 150 to 200 mg/m{sup 2}/day for 5 days every 28 days. Toxicities were defined using Common Terminology Criteria for Adverse Events version 3.0. Results: Twenty-four patients were treated, consisting of 14 men, 10 women; a median age of 60.5 years old (range, 27-77 years); and a median Karnofsky performance score of 80 (range, 60-90). All patients received hypo-IMRT and concurrent TMZ according to protocol, except for 2 patients who received only 14 days of concurrent TMZ. The median number of adjuvant TMZ cycles was 6.5 (range, 0-14).With a median follow-up of 14.8 months (range, 2.7-34.2 months) for all patients and a minimum follow-up of 20.6 months for living patients, no instances of grade 3 or higher nonhematologic toxicity were observed. The median OS was 16.6 months (range, 4.1-35.9 months). Six patients underwent repeated surgery for suspected tumor recurrence; necrosis was found in 50% to 100% of the resected specimens. Conclusion: In selected GBM patients, 60 Gy hypo-IMRT delivered in 6-Gy fractions over 2 weeks with concurrent and adjuvant TMZ is safe. OS in this small cohort of patients was comparable to that treated with current standard of care therapy.

  5. R Coronae Borealis stars in the Galactic Bulge discovered by EROS-2

    E-Print Network [OSTI]

    P. Tisserand; J. B. Marquette; P. R. Wood; E. Lesquoy; J. P. Beaulieu; A. Milsztajn; C. Hamadache; C. Afonso; J. N. Albert; J. Andersen; R. Ansari; E. Aubourg; P. Bareyre; X. Charlot; C. Coutures; R. Ferlet; P. Fouqué; J. F. Glicenstein; B. Goldman; A. Gould; M. Gros; J. Haissinski; J. de Kat; L. Le Guillou; C. Loup; C. Magneville; E. Maurice; A. Maury; M. Moniez; N. Palanque-Delabrouille; O. Perdereau; Y. Rahal; J. Rich; M. Spiro; A. Vidal-Madjar; S. Zylberajch

    2008-01-11T23:59:59.000Z

    Rare types of variable star may give unique insight into short-lived stages of stellar evolution. The systematic monitoring of millions of stars and advanced light curve analysis techniques of microlensing surveys make them ideal for discovering also such rare variable stars. One example is the R Coronae Borealis (RCB) stars, a rare type of evolved carbon-rich supergiant. We have conducted a systematic search of the EROS-2 database for the Galactic catalogue Bulge and spiral arms to find Galactic RCB stars. The light curves of $\\sim$100 million stars, monitored for 6.7 years (from July 1996 to February 2003), have been analysed to search for the main signature of RCB stars, large and rapid drops in luminosity. Follow-up spectroscopy has been used to confirm the photometric candidates. We have discovered 14 new RCB stars, all in the direction of the Galactic Bulge, bringing the total number of confirmed Galactic RCB stars to about 51. After reddening correction, the colours and absolute magnitudes of at least 9 of the stars are similar to those of Magellanic RCB stars. This suggests that these stars are in fact located in the Galactic Bulge, making them the first RCB stars discovered in the Bulge. The localisation of the 5 remaining RCBs is more uncertain: 4 are either located behind the Bulge at an estimated maximum distance of 14 kpc or have an unusual thick circumstellar shell; the other is a DY Per RCB which may be located in the Bulge, even if it is fainter than the known Magellanic DY Per. From the small scale height found using the 9 new Bulge RCBs, $61

  6. Discover, Visualize, and Deliver Geospatial Data through OGC Standards-based WebGIS System

    SciTech Connect (OSTI)

    Wei, Yaxing [ORNL; SanthanaVannan, Suresh K [ORNL; Cook, Robert B [ORNL

    2009-01-01T23:59:59.000Z

    Geospatial data are important to understand the Earth - ecosystem dynamics, land cover changes, resource management, and human interactions with the Earth to name a few. One of the biggest difficulties users face is to discover, access, and assemble distributed, large volume, heterogeneous geospatial data to conduct geo-analysis. Traditional methods of geospatial data discovery, visualization, and delivery lack the capabilities of resource sharing and automation across systems or organizational boundaries. They require users to download the data ldquoas-isrdquo in their original file format, projection, and extent. Also, discovering data served by traditional methods requires prior knowledge of data location, and processing requires specialized expertise. These drawbacks of traditional methods create additional burden to users, introduce too much overhead to research, and also reduce the potential usage of the data. At the Oak Ridge National Laboratory (ORNL), researchers working on NASA-sponsored projects: Distributed Active Archive Center (DAAC) and Modeling and Synthesis Thematic Data Center (MAST-DC) have tapped into the benefits of Open Geospatial Consortium (OGC) standards to overcome the drawbacks of traditional methods of geospatial data discovery, visualization, and delivery. The OGC standards-based approach facilitates data sharing and interoperability across network, organizational, and geopolitical boundaries. Tools and services based on OGC standards deliver the data in many user defined formats and allow users to visualize the data prior to download. This paper introduces an approach taken to visualize and deliver ORNL DAAC, MAST-DC, and other relevant geospatial data through OGC standards-based Web Services, including Web Map Service (WMS), Web Coverage Service (WCS), and Web Feature Service (WFS). It also introduces a WebGIS system built on top of OGC services that helps users discover, visualize, and access geospatial data.

  7. New Breast Cancer Recursive Partitioning Analysis Prognostic Index in Patients With Newly Diagnosed Brain Metastases

    SciTech Connect (OSTI)

    Niwinska, Anna, E-mail: alphaonetau@poczta.onet.pl [Department of Breast Cancer and Reconstructive Surgery, Maria Sklodowska-Curie Memorial Cancer Center and Institute of Oncology, Warsaw (Poland); Murawska, Magdalena [Department of Biostatistics, Erasmus University Medical Center, Rotterdam (Netherlands)

    2012-04-01T23:59:59.000Z

    Purpose: The aim of the study was to present a new breast cancer recursive partitioning analysis (RPA) prognostic index for patients with newly diagnosed brain metastases as a guide in clinical decision making. Methods and Materials: A prospectively collected group of 441 consecutive patients with breast cancer and brain metastases treated between the years 2003 and 2009 was assessed. Prognostic factors significant for univariate analysis were included into RPA. Results: Three prognostic classes of a new breast cancer RPA prognostic index were selected. The median survival of patients within prognostic Classes I, II, and III was 29, 9, and 2.4 months, respectively (p < 0.0001). Class I included patients with one or two brain metastases, without extracranial disease or with controlled extracranial disease, and with Karnofsky performance status (KPS) of 100. Class III included patients with multiple brain metastases with KPS of {<=}60. Class II included all other cases. Conclusions: The breast cancer RPA prognostic index is an easy and valuable tool for use in clinical practice. It can select patients who require aggressive treatment and those in whom whole-brain radiotherapy or symptomatic therapy is the most reasonable option. An individual approach is required for patients from prognostic Class II.

  8. NERSC Helps Discover Cosmic Transients - NERSC Science News June 15, 2009

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Saleshttp://www.fnal.gov/directorate/nalcal/nalcal02_07_05_files/nalcal.gif Directorate - Events -Exascale Science PostdoctoralDiscover

  9. Discover and Deliver: The Big Picture on Energy | Department of Energy

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed off Energy.gov. Are you0andEnergyGlobal Nuclearof aDepartment-ofBenefits »Discover and Deliver:

  10. In vitro study on newly designed biodegradable Fe-X composites (X W, CNT) prepared by spark plasma sintering

    E-Print Network [OSTI]

    Zheng, Yufeng

    iron and the additive secondary phase X using the spark plasma sintering (SPS) method, aiming to obtain on newly designed biodegradable Fe-X composites (X Ľ W, CNT) prepared by spark plasma sintering. J Biomed plasma sintering J. Cheng,1 Y.F. Zheng1,2 1 Center for Biomedical Materials and Tissue Engineering

  11. Managing the Night Off-Peak Power Demand in the Central Region UPS with Newly Commissioned NPP Capacities

    SciTech Connect (OSTI)

    Aminov, R. Z. [Saratov Research Center of the Russian Academy of Sciences (Russian Federation); Pron’, D. M. [Yu. A. Gagarin Saratov State Technical University (Russian Federation)

    2014-01-15T23:59:59.000Z

    The use of hydrogen technologies as a controlled-load consumer based on the newly commissioned base-load nuclear power plants to level out the daily load profile is justified for the Unified Power System (UPS) of the Central Region of Russia, as an example, for the period till 2020.

  12. Petrophysical Properties of Unconventional Low-Mobility Reservoirs (Shale Gas and Heavy Oil) by Using Newly Developed Adaptive Testing Approach

    E-Print Network [OSTI]

    Torres-VerdĂ­n, Carlos

    SPE 159172 Petrophysical Properties of Unconventional Low-Mobility Reservoirs (Shale Gas and Heavy Oil) by Using Newly Developed Adaptive Testing Approach Hamid Hadibeik, The University of Texas the dynamics of water- and oil- base mud-filtrate invasion that produce wellbore supercharging were developed

  13. The role of whole brain radiation therapy in the management of newly diagnosed brain metastases: a systematic review and evidence-based clinical practice guideline

    E-Print Network [OSTI]

    2010-01-01T23:59:59.000Z

    MANUSCRIPT The role of whole brain radiation therapy in themanagement of newly diagnosed brain metastases: a systematicNeurosurgery, Iowa Spine and Brain Institute, Iowa City, IA,

  14. Discovering the relevant variables in a large clinical database by back-fitting fixed effects in a mixed linear model

    E-Print Network [OSTI]

    Boyer, Edmond

    Discovering the relevant variables in a large clinical database by back-fitting fixed effects are investigates according to a planned protocol and with a predetermined cohort. They also differ from basic

  15. Wavelet-Based Quantum Field Theory

    E-Print Network [OSTI]

    Mikhail V. Altaisky

    2007-11-11T23:59:59.000Z

    The Euclidean quantum field theory for the fields $\\phi_{\\Delta x}(x)$, which depend on both the position $x$ and the resolution $\\Delta x$, constructed in SIGMA 2 (2006), 046, hep-th/0604170, on the base of the continuous wavelet transform, is considered. The Feynman diagrams in such a theory become finite under the assumption there should be no scales in internal lines smaller than the minimal of scales of external lines. This regularisation agrees with the existing calculations of radiative corrections to the electron magnetic moment. The transition from the newly constructed theory to a standard Euclidean field theory is achieved by integration over the scale arguments.

  16. R Coronae Borealis stars in the Galactic Bulge discovered by EROS-2

    E-Print Network [OSTI]

    Tisserand, P; Wood, P R; Lesquoy, E; Beaulieu, J P; Milsztajn, A; Hamadache, C; Afonso, C; Albert, J N; Andersen, J; Ansari, R; Aubourg, E; Bareyre, P; Charlot, X; Coutures, C; Ferlet, R; Fouqué, P; Glicenstein, J F; Goldman, B; Gould, A; Gros, M; Haďssinski, J; De Kat, J; Guillou, L Le; Loup, C; Magneville, C; Maurice, E; Maury, A; Moniez, M; Palanque-Delabrouille, Nathalie; Perdereau, O; Rahal, Y; Rich, J; Spiro, M; Vidal-Madjar, A; Zylberajch, S

    2008-01-01T23:59:59.000Z

    Rare types of variable star may give unique insight into short-lived stages of stellar evolution. The systematic monitoring of millions of stars and advanced light curve analysis techniques of microlensing surveys make them ideal for discovering also such rare variable stars. One example is the R Coronae Borealis (RCB) stars, a rare type of evolved carbon-rich supergiant. We have conducted a systematic search of the EROS-2 database for the Galactic catalogue Bulge and spiral arms to find Galactic RCB stars. The light curves of $\\sim$100 million stars, monitored for 6.7 years (from July 1996 to February 2003), have been analysed to search for the main signature of RCB stars, large and rapid drops in luminosity. Follow-up spectroscopy has been used to confirm the photometric candidates. We have discovered 14 new RCB stars, all in the direction of the Galactic Bulge, bringing the total number of confirmed Galactic RCB stars to about 51. After reddening correction, the colours and absolute magnitudes of at least ...

  17. Memory, imagination, and the cognitive value of the artsq Memory has many aspects which psychologists have not discovered, but of which the poet, who constructs its image, is

    E-Print Network [OSTI]

    Epstein, Russell A.

    psychologists have not discovered, but of which the poet, who constructs its image, is aware. But the poet

  18. Asymmetric neutrino propagation in newly born magnetized strange stars: GRB and kicks

    E-Print Network [OSTI]

    J. Berdermann; D. Blaschke; H. Grigorian; D. N. Voskresensky

    2006-01-21T23:59:59.000Z

    We consider the early cooling evolution of strongly magnetized strange stars in a CFL phase with high gap Delta > 100 MeV. We demonstrate how this model may explain main features of the gamma-ray burst phenomena and also yield a strong star kick. The mechanism is based on beaming of neutrino emission along the magnetic vortex lines. We show that for sufficiently high initial temperatures T_0 ~ 30 - 60 MeV and surface magnetic fields B_s ~ 10^{15} - 10^{17} G, the energy release within the narrow beam is up to 10^{52} erg with a magnetic field dependent time scale between 10^{-2} s (for a smaller magnetic field) to 10 s. The above mechanism together with the parity violation of the neutrino-producing weak interaction processes in a magnetic field allow for the strange star kick. The higher the magnetic field the larger is the stars kick velocity. These velocities may cover the same range as observed pulsar kick velocities.

  19. Building America Technology Solutions for New and Existing Homes: Field Performance of Heat Pump Water Heaters in the Northeast (Fact Sheet)

    Broader source: Energy.gov [DOE]

    In this project, the Consortium for Advanced Residential Buildings evaluated three newly released heat pump water heater products in order to provide publicly available field data on these products.

  20. Impact of the red imported fire ant on newly hatched northern bobwhite

    E-Print Network [OSTI]

    Pedersen, Elena Kalleso

    1994-01-01T23:59:59.000Z

    The response of northern bobwhite (Colinus virginianus) to the presence of red imported fire ants (Solenopsis invicta) during the first 6 days post-hatching was examined in a 9-week-field experiment during spring and summer 1993 in southeastern...

  1. Impact of the red imported fire ant on newly hatched northern bobwhite 

    E-Print Network [OSTI]

    Pedersen, Elena Kalleso

    1994-01-01T23:59:59.000Z

    The response of northern bobwhite (Colinus virginianus) to the presence of red imported fire ants (Solenopsis invicta) during the first 6 days post-hatching was examined in a 9-week-field experiment during spring and summer 1993 in southeastern...

  2. Discover of the "missing" mode in HR 1217 by the Whole Earth Telescope

    E-Print Network [OSTI]

    D. W. Kurtz; S. D. Kawaler; R. L. Riddle et al.

    2001-11-16T23:59:59.000Z

    HR 1217 is a prototypical rapidly oscillating Ap star that has presented a test to the theory of nonradial stellar pulsation. Prior observations showed a clear pattern of five modes with alternating frequency spacings of 33.3 microHz and 34.6 microHz, with a sixth mode at a problematic spacing of 50.0 microHz (which equals 1.5 times 33.3 microHz) to the high-frequency side. Asymptotic pulsation theory allowed for a frequency spacing of 34 microHz, but Hipparcos observations rule out such a spacing. Theoretical calculations of magnetoacoustic modes in Ap stars by Cunha (2001) predicted that there should be a previously undetected mode 34 microHz higher than the main group, with a smaller spacing between it and the highest one. In this Letter, we present preliminary results from a multi-site photometric campaign on the rapidly oscillating Ap star HR 1217 using the "Whole Earth Telescope". While a complete analysis of the data will appear in a later paper, one outstanding result from this run is the discovery of a newly detected frequency in the pulsation spectrum of this star, at the frequency predicted by Cunha (2001).

  3. A CLASS OF ECCENTRIC BINARIES WITH DYNAMIC TIDAL DISTORTIONS DISCOVERED WITH KEPLER

    SciTech Connect (OSTI)

    Thompson, Susan E.; Barclay, Thomas; Howell, Steve B.; Still, Martin; Ibrahim, Khadeejah A. [NASA Ames Research Center, Moffett Field, CA 94035 (United States); Everett, Mark [National Optical Astronomy Observatory, Tucson, AZ 85719 (United States); Mullally, Fergal; Rowe, Jason; Christiansen, Jessie L.; Twicken, Joseph D.; Clarke, Bruce D. [SETI Institute, 189 Bernardo Avenue, Suite 100, Mountain View, CA 94043 (United States); Kurtz, Donald W.; Hambleton, Kelly, E-mail: susan.e.thompson@nasa.gov [Jeremiah Horrocks Institute, University of Central Lancashire, Preston PR1 2HE (United Kingdom)

    2012-07-01T23:59:59.000Z

    We have discovered a class of eccentric binary systems within the Kepler data archive that have dynamic tidal distortions and tidally induced pulsations. Each has a uniquely shaped light curve that is characterized by periodic brightening or variability at timescales of 4-20 days, frequently accompanied by shorter period oscillations. We can explain the dominant features of the entire class with orbitally varying tidal forces that occur in close, eccentric binary systems. The large variety of light curve shapes arises from viewing systems at different angles. This hypothesis is supported by spectroscopic radial velocity measurements for five systems, each showing evidence of being in an eccentric binary system. Prior to the discovery of these 17 new systems, only four stars, where KOI-54 is the best example, were known to have evidence of these dynamic tides and tidally induced oscillations. We perform preliminary fits to the light curves and radial velocity data, present the overall properties of this class, and discuss the work required to accurately model these systems.

  4. Planck's Dusty GEMS: Gravitationally lensed high-redshift galaxies discovered with the Planck survey

    E-Print Network [OSTI]

    Canameras, R; Guery, D; McKenzie, T; Koenig, S; Petitpas, G; Dole, H; Frye, B; Flores-Cacho, I; Montier, L; Negrello, M; Beelen, A; Boone, F; Dicken, D; Lagache, G; Floch, E Le; Altieri, B; Bethermin, M; Chary, R; De Zotti, G; Giard, M; Kneissl, R; Krips, M; Malhotra, S; Martinache, C; Omont, A; Pointecouteau, E; Puget, J -L; Scott, D; Soucail, G; Valtchanov, I; Welikala, N; Yan, L

    2015-01-01T23:59:59.000Z

    We present an analysis of 11 bright far-IR/submm sources discovered through a combination of the Planck survey and follow-up Herschel-SPIRE imaging. Each source has a redshift z=2.2-3.6 obtained through a blind redshift search with EMIR at the IRAM 30-m telescope. Interferometry obtained at IRAM and the SMA, and optical/near-infrared imaging obtained at the CFHT and the VLT reveal morphologies consistent with strongly gravitationally lensed sources. Additional photometry was obtained with JCMT/SCUBA-2 and IRAM/GISMO at 850 um and 2 mm, respectively. All objects are bright, isolated point sources in the 18 arcsec beam of SPIRE at 250 um, with spectral energy distributions peaking either near the 350 um or the 500 um bands of SPIRE, and with apparent far-infrared luminosities of up to 3x10^14 L_sun. Their morphologies and sizes, CO line widths and luminosities, dust temperatures, and far-infrared luminosities provide additional empirical evidence that these are strongly gravitationally lensed high-redshift gala...

  5. Space Warps II. New Gravitational Lens Candidates from the CFHTLS Discovered through Citizen Science

    E-Print Network [OSTI]

    More, Anupreeta; Marshall, Phil; More, Surhud; Baeten, Elisabeth; Wilcox, Julianne; Macmillan, Christine; Cornen, Claude; Kapadia, Amit; Parrish, Michael; Snyder, Chris; Davis, Chris; Gavazzi, Raphael; Lintott, Chris; Simpson, Robert; Miller, David; Smith, Arfon M; Paget, Edward; Saha, Prasenjit; Kueng, Rafael; Collett, Tom; Tecza, Matthias; Baumer, Michael

    2015-01-01T23:59:59.000Z

    We report the discovery of 28 promising and a total of 58 new lens candidates from the CFHT Legacy Survey (CFHTLS) based on about 11 million classifications performed by citizen scientists as part of the first Space Warps lens search. The goal of the blind lens search was to identify lenses missed by lens finding robots (the RingFinder on galaxy scales and ArcFinder on group/cluster scales), which have been previously used to mine the CFHTLS for lenses. We compare some properties of lens samples detected by these algorithms to the SpaceWarps sample and found that they are broadly similar. The image separation distribution calculated from the SpaceWarps discovered sample shows that our previous constraints on the average density profile of the lens population are robust. Space Warps recovers about 60% of the known sample and the new candidates show a richer variety compared to the lenses found by the two robots. We find that analyzing only those classifications which are performed by the high power volunteers,...

  6. Radio-X-ray Synergy to discover and Study Jetted Tidal Disruption Events

    E-Print Network [OSTI]

    Donnarumma, I

    2015-01-01T23:59:59.000Z

    Observational consequences of tidal disruption of stars (TDEs) by supermassive black holes (SMBHs) can enable us to discover quiescent SMBHs, constrain their mass function, study formation and evolution of transient accretion disks and jet formation. A couple of jetted TDEs have been recently claimed in hard X-rays, challenging jet models, previously applied to $\\gamma$-ray bursts and active galactic nuclei. It is therefore of paramount importance to increase the current sample. In this paper, we find that the best strategy is not to use up-coming X-ray instruments alone, which will yield between several (e-Rosita) and a couple of hundreds (Einstein Probe) events per year below redshift one. We rather claim that a more efficient TDE hunter will be the Square Kilometer Array (SKA) operating {\\it in survey mode} at 1.4 GHz. It may detect up to several hundreds of events per year below $z \\sim 2.5$ with a peak rate of a few tens per year at $z\\approx 0.5$. Therefore, even if the jet production efficiency is {\\it...

  7. Materials and process engineering projects for the Sandia National Laboratories/Newly Independent States Industrial Partnering Program. Volume 2

    SciTech Connect (OSTI)

    Zanner, F.J.; Moffatt, W.C.

    1995-07-01T23:59:59.000Z

    In July, 1994, a team of materials specialists from Sandia and US. Industry traveled to Russia and the Ukraine to select and fund projects in materials and process technology in support of the Newly Independent States/Industrial Partnering Program (NIS/IPP). All of the projects are collaborations with scientists and Engineers at NIS Institutes. Each project is scheduled to last one year, and the deliverables are formatted to supply US. Industry with information which will enable rational decisions to be made regarding the commercial value of these technologies. This work is an unedited interim compilation of the deliverables received to date.

  8. Materials and process engineering projects for the Sandia National Laboratories/Newly Independent States Industrial Partnering Program. Volume 1

    SciTech Connect (OSTI)

    Zanner, F.J.; Moffatt, W.C.

    1995-07-01T23:59:59.000Z

    In July, 1994, a team of materials specialists from Sandia and U S Industry traveled to Russia and the Ukraine to select and fund projects in materials and process technology in support of the Newly Independent States/Industrial Partnering Program (NIS/IPP). All of the projects are collaborations with scientists and Engineers at NIS Institutes. Each project is scheduled to last one year, and the deliverables are formatted to supply US Industry with information which will enable rational decisions to be made regarding the commercial value of these technologies. This work is an unedited interim compilation of the deliverables received to date.

  9. GOALIE, A Common Lisp Application to Discover Kripke Models: Redescribing Biological Processes from Time-Course Data

    E-Print Network [OSTI]

    Mishra, Bud

    measurements into formal temporal logic models of biological processes. It finds extensive uses in the analysis is a novel computational approach and software system that uncovers formal temporal logic modelsGOALIE, A Common Lisp Application to Discover Kripke Models: Redescribing Biological Processes from

  10. ewly discovered at the bottom of the Hudson Canyon, the largest submarine canyon off the eastern United States, is

    E-Print Network [OSTI]

    Garfunkel, Eric

    also have implications in alternative energy and global warming, continues Rona, who likens methane, it is a potent greenhouse gas that contributes to global warming." Rona and his colleagues discovered the pits the canyon revealed abnormally high levels of methane, while sonar data collected by the free

  11. 280 IEEE TRANSACTIONS ON POWER SYSTEMS, VOL. 16, NO. 2, MAY 2001 Discovering Price-Load Relationships in California's

    E-Print Network [OSTI]

    Vucetic, Slobodan

    system performance. Index Terms--Deregulation, electricity market, power industry, power system economics a disadvantage of trying to understand events from highly simplified models of the market, or of the power system280 IEEE TRANSACTIONS ON POWER SYSTEMS, VOL. 16, NO. 2, MAY 2001 Discovering Price

  12. A Measurement of the Recently Discovered Higgs Boson in the Decay into Two Photons with Associated Jets, Using

    E-Print Network [OSTI]

    Sheldon, Nathan D.

    A Measurement of the Recently Discovered Higgs Boson in the Decay into Two Photons with Associated or not this is the Higgs boson as predicted by the Standard Model of Particle Physics (SM). Experimentally measuring of the Higgs boson via its decay into two photons, which was one of the key discovery channels. Part

  13. 5.4 Stirling Numbers When counting various types of functions from 2.1, we quickly discovered that

    E-Print Network [OSTI]

    DeMaio, Joe

    5.4 Stirling Numbers When counting various types of functions from 2.1, we quickly discovered as the Stirling number of the second kind. There are two types of Stirling numbers. We will initially examine Stirling numbers of the second kind due to the fact that they occur more frequently. The Stirling number

  14. Querying Multiple Sets of Discovered Rules Rule mining is an important data mining task that has been

    E-Print Network [OSTI]

    Liu, Bing

    operating on multiple rulebases because many practically important data mining queries naturally requireQuerying Multiple Sets of Discovered Rules ABSTRACT Rule mining is an important data mining task querying of multiple data mining rulebases to retrieve interesting rules. In this paper, we propose a new

  15. Sixty-seven Additional L Dwarfs Discovered by the Two Micron All Sky Survey (2MASS)

    E-Print Network [OSTI]

    J. Davy Kirkpatrick; I. Neill Reid; James Liebert; John E. Gizis; Adam J. Burgasser; David G. Monet; Conard C. Dahn; Brant Nelson; Rik J. Williams

    2000-03-22T23:59:59.000Z

    We present JHKs photometry, far red spectra, and spectral classifications for an additional 67 L dwarfs discovered by the Two Micron All Sky Survey. One of the goals of this new search was to locate more examples of the latest L dwarfs. Of the 67 new discoveries, 17 have types of L6 or later. Analysis of these new discoveries shows that H-alpha emission has yet to be convincingly detected in any L dwarf later than type L4.5, indicating a decline or absence of chromospheric activity in the latest L dwarfs. Further analysis shows that 16 (and possibly 4 more) of the new L dwarfs are lithium brown dwarfs and that the average line strength for those L dwarfs showing lithium increases until roughly type L6.5 V then declines for later types. This disappearance may be the first sign of depletion of atomic lithium as it begins to form into lithium-bearing molecules. Another goal of the search was to locate nearer, brighter L dwarfs of all subtypes. Using absolute magnitudes for 17 L dwarf systems with trigonometric parallax measurements, we develop spectrophotometric relations to estimate distances to the other L dwarfs. Of the 67 new discoveries, 21 have photometric distances placing them within 25 parsecs of the Sun. A table of all known L and T dwarfs believed to lie within 25 parsecs - 53 in total - is also presented. Using the distance measurement of the coolest L dwarf known, we calculate that the gap in temperature between L8 and the warmest known T dwarfs is less than 350K and probably much less. If the transition region between the two classes spans a very small temperature interval, this would explain why no transition objects have yet been uncovered. This evidence, combined with model fits to low-resolution spectra of late-M and early-L dwarfs, indicates that L dwarfs span the range 1300K < Teff < 2000K.

  16. Celebrate Apollo: Exploring the Moon, Discovering Earth We came all this way to explore the moon, and the most important thing is that we

    E-Print Network [OSTI]

    Celebrate Apollo: Exploring the Moon, Discovering Earth We came all this way to explore the moon, and the most important thing is that we discovered the Earth. -- William Anders, Apollo 8 Astronaut The Apollo Program afforded the world the first views of our fragile planet. It was during the Apollo Program

  17. A rapid and efficient newly established method to detect COL1A1-PDGFB gene fusion in dermatofibrosarcoma protuberans

    SciTech Connect (OSTI)

    Yokoyama, Yoko; Shimizu, Akira; Okada, Etsuko; Ishikawa, Osamu [Department of Dermatology, Gunma University Graduate School of Medicine, 3-39-22, Showa, Maebashi, Gunma 371-8511 (Japan)] [Department of Dermatology, Gunma University Graduate School of Medicine, 3-39-22, Showa, Maebashi, Gunma 371-8511 (Japan); Motegi, Sei-ichiro, E-mail: smotegi@gunma-u.ac.jp [Department of Dermatology, Gunma University Graduate School of Medicine, 3-39-22, Showa, Maebashi, Gunma 371-8511 (Japan)] [Department of Dermatology, Gunma University Graduate School of Medicine, 3-39-22, Showa, Maebashi, Gunma 371-8511 (Japan)

    2012-08-24T23:59:59.000Z

    Highlights: Black-Right-Pointing-Pointer We developed new method to rapidly identify COL1A1-PDGFB fusion in DFSP. Black-Right-Pointing-Pointer New PCR method using a single primer pair detected COL1A1-PDGFB fusion in DFSP. Black-Right-Pointing-Pointer This is the first report of DFSP with a novel COL1A1 breakpoint in exon 5. -- Abstract: The detection of fusion transcripts of the collagen type 1{alpha}1 (COL1A1) and platelet-derived growth factor-BB (PDGFB) genes by genetic analysis has recognized as a reliable and valuable molecular tool for the diagnosis of dermatofibrosarcoma protuberans (DFSP). To detect the COL1A1-PDGFB fusion, almost previous reports performed reverse transcription polymerase chain reaction (RT-PCR) using multiplex forward primers from COL1A1. However, it has possible technical difficulties with respect to the handling of multiple primers and reagents in the procedure. The objective of this study is to establish a rapid, easy, and efficient one-step method of PCR using only a single primer pair to detect the fusion transcripts of the COL1A1 and PDGFB in DFSP. To validate new method, we compared the results of RT-PCR in five patients of DFSP between the previous method using multiplex primers and our established one-step RT-PCR using a single primer pair. In all cases of DFSP, the COL1A1-PDGFB fusion was detected by both previous method and newly established one-step PCR. Importantly, we detected a novel COL1A1 breakpoint in exon 5. The newly developed method is valuable to rapidly identify COL1A1-PDGFB fusion transcripts in DFSP.

  18. FIRST SCIENCE WITH SAMI: A SERENDIPITOUSLY DISCOVERED GALACTIC WIND IN ESO 185-G031

    SciTech Connect (OSTI)

    Fogarty, Lisa M. R.; Bland-Hawthorn, Joss; Croom, Scott M.; Bryant, Julia J.; Richards, Samuel; Allen, James T. [Sydney Institute for Astronomy (SIfA), School of Physics, University of Sydney, NSW 2006 (Australia); Green, Andrew W.; Lawrence, Jon S.; Bauer, Amanda E.; Birchall, Michael N.; Brough, Sarah; Colless, Matthew; Ellis, Simon C.; Farrell, Tony; Goodwin, Michael; Heald, Ron; Hopkins, Andrew M.; Horton, Anthony; Lee, Steve [Australian Astronomical Observatory, P.O. Box 296, Epping, NSW 1710 (Australia); Jones, D. Heath [School of Physics, Monash University, Clayton, VIC 3800 (Australia); and others

    2012-12-20T23:59:59.000Z

    We present the first scientific results from the Sydney-AAO Multi-Object IFS (SAMI) at the Anglo-Australian Telescope. This unique instrument deploys 13 fused fiber bundles (hexabundles) across a one-degree field of view allowing simultaneous spatially resolved spectroscopy of 13 galaxies. During the first SAMI commissioning run, targeting a single galaxy field, one object (ESO 185-G031) was found to have extended minor axis emission with ionization and kinematic properties consistent with a large-scale galactic wind. The importance of this result is twofold: (1) fiber bundle spectrographs are able to identify low surface brightness emission arising from extranuclear activity and (2) such activity may be more common than presently assumed because conventional multi-object spectrographs use single-aperture fibers and spectra from these are nearly always dominated by nuclear emission. These early results demonstrate the extraordinary potential of multi-object hexabundle spectroscopy in future galaxy surveys.

  19. Discovering the Nature of Dark Energy: Towards Better Distances from Type

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField Campaign:INEA : Papers Subfolders in

  20. PRECURSOR OF SUNSPOT PENUMBRAL FORMATION DISCOVERED WITH HINODE SOLAR OPTICAL TELESCOPE OBSERVATIONS

    SciTech Connect (OSTI)

    Shimizu, Toshifumi [Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, 3-1-1 Yoshinodai, Chuo, Sagamihara, Kanagawa 252-5210 (Japan); Ichimoto, Kiyoshi [Kwasan and Hida Observatories, Kyoto University, Kamitakara-cho, Takayama, Gifu 506-1314 (Japan); Suematsu, Yoshinori, E-mail: shimizu.toshifumi@isas.jaxa.jp [National Astronomical Observatory of Japan, Mitaka, Tokyo 181-8588 (Japan)

    2012-03-10T23:59:59.000Z

    We present observations of a precursory signature that would be helpful for understanding the formation process of sunspot penumbrae. The Hinode Solar Optical Telescope successfully captured the entire evolution of a sunspot from the pore to a large well-developed sunspot with penumbra in an emerging flux region appearing in NOAA Active Region 11039. We found an annular zone (width 3''-5'') surrounding the umbra (pore) in Ca II H images before the penumbra formed around the umbra. The penumbra developed as if to fill the annular zone. The annular zone shows weak magnetogram signals, meaning less magnetic flux or highly inclined fields there. Pre-existing ambient magnetic field islands were distributed at the outer edge of the annular zone and did not come into the zone. There are no strong systematic flow patterns in the zone, but we occasionally observed small magnetic flux patches streaming out. The observations indicate that the annular zone is different from the sunspot moat flow region and that it represents the structure in the chromosphere. We conclude that the annular zone reflects the formation of a magnetic canopy overlying the region surrounding the umbra at the chromospheric level, long before the formation of the penumbra at the photospheric level. The magnetic field structure in the chromosphere needs to be considered in the formation process of the penumbrae.

  1. Identification of toroidal field errors in a modified betatron accelerator

    SciTech Connect (OSTI)

    Loschialpo, P. (Beam Physics Branch, Plasma Physics Division, Naval Research Laboratory, Washington, DC 20375 (United States)); Marsh, S.J. (SFA Inc., Landover, Maryland 20785 (United States)); Len, L.K.; Smith, T. (FM Technologies Inc., 10529-B Braddock Road, Fairfax, Virginia 22032 (United States)); Kapetanakos, C.A. (Beam Physics Branch, Plasma Physics Division, Naval Research Laboratory, Washington, DC 20375 (United States))

    1993-06-01T23:59:59.000Z

    A newly developed probe, having a 0.05% resolution, has been used to detect errors in the toroidal magnetic field of the NRL modified betatron accelerator. Measurements indicate that the radial field components (errors) are 0.1%--1% of the applied toroidal field. Such errors, in the typically 5 kG toroidal field, can excite resonances which drive the beam to the wall. Two sources of detected field errors are discussed. The first is due to the discrete nature of the 12 single turn coils which generate the toroidal field. Both measurements and computer calculations indicate that its amplitude varies from 0% to 0.2% as a function of radius. Displacement of the outer leg of one of the toroidal field coils by a few millimeters has a significant effect on the amplitude of this field error. Because of uniform toroidal periodicity of these coils this error is a good suspect for causing the excitation of the damaging [ital l]=12 resonance seen in our experiments. The other source of field error is due to the current feed gaps in the vertical magnetic field coils. A magnetic field is induced inside the vertical field coils' conductor in the opposite direction of the applied toroidal field. Fringe fields at the gaps lead to additional field errors which have been measured as large as 1.0%. This source of field error, which exists at five toroidal locations around the modified betatron, can excite several integer resonances, including the [ital l]=12 mode.

  2. New Variable Stars Discovered by the APACHE Survey. II. Results After the Second Observing Season

    E-Print Network [OSTI]

    Damasso, M; Bernagozzi, A; Bertolini, E; Calcidese, P; Carbognani, A; Cenadelli, D; Christille, J M; Giacobbe, P; Lanteri, L; Smart, M G Lattanzi R; Sozzetti, A

    2015-01-01T23:59:59.000Z

    Routinely operating since July 2012, the APACHE survey has celebrated its second birthday. While the main goal of the Project is the detection of transiting planets around a large sample of bright, nearby M dwarfs in the northern hemisphere, the APACHE large photometric database for hundreds of different fields represents a relevant resource to search for and provide a first characterization of new variable stars. We celebrate here the conclusion of the second year of observations by reporting the discovery of 14 new variables.

  3. Better Buildings Neighborhood Program Workforce Peer Exchange Call: Mentoring and Job Training in the Field for Newly Trained Contractors, April 12, 2012

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't Your Destiny: The FutureCommentsEnergy Christopher|for1, 20114, 2013 Better1,9, 2012Call

  4. Cost and economic impact analysis of land disposal restrictions for newly listed wastes and contaminated debris (phase 1 LDRS). Final rule

    SciTech Connect (OSTI)

    NONE

    1992-06-30T23:59:59.000Z

    The report analyzes the cost and economic impacts of the land disposal restrictions for newly identified wastes and hazardous debris. It examines containment buildings and wastes affected by the rule. It also considers costs of restricting the land disposal of Phase I waste. It discusses the limitations to the cost and economic analysis. Appendices include calculations of F037 and F038 volumes, costs and benefits of dredging and closure options for petroleum refining surface impoundments, unit cost data gathered for hazardous debris treatment technologies, guide for structured interviews conducted for the cost analysis of newly regulated hazardous debris, and line item expense projections for costing containment building design and operating requirements.

  5. Phase I Trial of Hypofractionated Intensity-Modulated Radiotherapy With Temozolomide Chemotherapy for Patients With Newly Diagnosed Glioblastoma Multiforme

    SciTech Connect (OSTI)

    Chen Changhu, E-mail: changhu.chen@ucdenver.edu [Department of Radiation Oncology, University of Colorado School of Medicine, Aurora, CO (United States); Damek, Denise [Department of Neurology, University of Colorado School of Medicine, Aurora, CO (United States); Gaspar, Laurie E. [Department of Radiation Oncology, University of Colorado School of Medicine, Aurora, CO (United States); Waziri, Allen; Lillehei, Kevin [Department of Neurosurgery, University of Colorado School of Medicine, Aurora, CO (United States); Kleinschmidt-DeMasters, B.K. [Department of Pathology, University of Colorado School of Medicine, Aurora, CO (United States); Robischon, Monica; Stuhr, Kelly; Rusthoven, Kyle E.; Kavanagh, Brian D. [Department of Radiation Oncology, University of Colorado School of Medicine, Aurora, CO (United States)

    2011-11-15T23:59:59.000Z

    Purpose: To determine the maximal tolerated biologic dose intensification of radiotherapy using fractional dose escalation with temozolomide (TMZ) chemotherapy in patients with newly diagnosed glioblastoma multiforme. Methods and Materials: Patients with newly diagnosed glioblastoma multiforme after biopsy or resection and with adequate performance status, bone marrow, and organ function were eligible. The patients underwent postoperative intensity-modulated radiotherapy (IMRT) with concurrent and adjuvant TMZ. All patients received a total dose of 60 Gy to the surgical cavity and residual tumor, with a 5-mm margin. IMRT biologic dose intensification was achieved by escalating from 3 Gy/fraction (Level 1) to 6 Gy/fraction (Level 4) in 1-Gy increments. Concurrent TMZ was given at 75 mg/m{sup 2}/d for 28 consecutive days. Adjuvant TMZ was given at 150-200 mg/m{sup 2}/d for 5 days every 28 days. Dose-limiting toxicity was defined as any Common Terminology Criteria for Adverse Events, version 3, Grade 3-4 nonhematologic toxicity, excluding Grade 3 fatigue, nausea, and vomiting. A standard 3+3 Phase I design was used. Results: A total of 16 patients were accrued (12 men and 4 women, median age, 69 years; range, 34-84. The median Karnofsky performance status was 80 (range, 60-90). Of the 16 patients, 3 each were treated at Levels 1 and 2, 4 at Level 3, and 6 at Level 4. All patients received IMRT and concurrent TMZ according to the protocol, except for 1 patient, who received 14 days of concurrent TMZ. The median number of adjuvant TMZ cycles was 7.5 (range, 0-12). The median survival was 16.2 months (range, 3-33). One patient experienced vision loss in the left eye 7 months after IMRT. Four patients underwent repeat surgery for suspected tumor recurrence 6-12 months after IMRT; 3 had radionecrosis. Conclusions: The maximal tolerated IMRT fraction size was not reached in our study. Our results have shown that 60 Gy IMRT delivered in 6-Gy fractions within 2 weeks with concurrent and adjuvant TMZ is tolerable in selected patients with a T{sub 1}-weighted enhancing tumor <6 cm.

  6. Accumulation of operational history through emulation test to meet proven technology requirement for newly developed I and C technology

    SciTech Connect (OSTI)

    Yeong Cheol, Shin; Sung Kon, Kang [Nuclear Environment Technology Institute (NETEC), Korea Hydro and Nuclear Power(KHNP) P.O. Box Youseong-gu Daejeon (Korea, Republic of); Han Seong, Son [ENESYS Co., Ltd. 3F, Pianetta Bldg., 337-2, Jangdae-dong, Yuseong-gu, Daejeon (Korea, Republic of)

    2006-07-01T23:59:59.000Z

    As new advanced digital I and C technology with potential benefits of higher functionality and better cost effectiveness is available in the market, NPP (Nuclear Power Plant) operators are inclined to use the new technology for the construction of new plant and the upgrade of existing plants. However, this new technology poses risks to the NPP operators at the same time. These risks are mainly due to the poor reliability of newly developed technology. KHNP's past experiences with the new equipment shows many cases of reliability problems. And their consequences include unintended plant trips, lowered acceptance of the new digital technology by the plant I and C maintenance crew, and increased licensing burden in answering for questions from the nuclear regulatory body. Considering the fact that the risk of these failures in the nuclear plant operation is far greater than those in other industry, nuclear power plant operators want proven technology for I and C systems. This paper presents an approach for the emulation of operational history through which a newly developed technology becomes a proven technology. One of the essential elements of this approach is the feedback scheme of running the new equipment in emulated environment, gathering equipment failure, and correcting the design(and test bed). The emulation of environment includes normal and abnormal events of the new equipment such as reconfiguration of control system due to power failure, plant operation including full spectrum of credible scenarios in an NPP. Emulation of I and C equipment execution mode includes normal operation, initialization and termination, abnormal operation, hardware maintenance and maintenance of algorithm/software. Plant specific simulator is used to create complete profile of plant operational conditions that I and C equipment is to experience in the real plant. Virtual operating crew technology is developed to run the simulator scenarios without involvement of actual operators at the emulated environment. Verification and validation are performed for detecting problems of the new technology. Verification of the equipment is done in two ways, one is to evaluate the features of the equipment according to the criteria derived from good practices of well proven I and C products and the second is to evaluate the features of the equipment by I and C experts. Validations are done in two ways, one is to validate the functions and performance of the equipment and the other is to validate the robustness of the equipment by accumulation operational experience. (authors)

  7. Complications Associated with Long-Term Disposition of Newly-Generated Transuranic Waste: A National Laboratory Perspective

    SciTech Connect (OSTI)

    B.J. Orchard; L.A. Harvego; T.L. Carlson; R.P. Grant

    2009-03-01T23:59:59.000Z

    The Idaho National Laboratory (INL) is a multipurpose national laboratory delivering specialized science and engineering solutions for the U.S. Department of Energy (DOE). Sponsorship of INL was formally transferred to the DOE Office of Nuclear Energy, Science and Technology (NE) by Secretary Spencer Abraham in July 2002. The move to NE, and designation as the DOE lead nuclear energy laboratory for reactor technology, supports the nation’s expanding nuclear energy initiatives, placing INL at the center of work to develop advanced Generation IV nuclear energy systems; nuclear energy/hydrogen coproduction technology; advanced nuclear energy fuel cycle technologies; and providing national security answers to national infrastructure needs. As a result of the Laboratory’s NE mission, INL generates both contact-handled and remote-handled transuranic (TRU) waste from ongoing operations. Generation rates are relatively small and fluctuate based on specific programs and project activities being conducted; however, the Laboratory will continue to generate TRU waste well into the future in association with the NE mission. Currently, plans and capabilities are being established to transfer INL’s contact-handled TRU waste to the Advanced Mixed Waste Treatment Plant (AMWTP) for certification and disposal to the Waste Isolation Pilot Plant (WIPP). Remote-handled TRU waste is currently placed in storage at the Materials and Fuels Complex (MFC). In an effort to minimize future liabilities associated with the INL NE mission, INL is evaluating and assessing options for the management and disposition of all its TRU waste on a real-time basis at time of generation. This paper summarizes near-term activities to minimize future re handling of INL’s TRU waste, as well as, potential complications associated with the long-term disposition of newly-generated TRU waste. Potential complications impacting the disposition of INL newly-generated TRU waste include, but are not limited to: 1) required remote-handled TRU packaging configuration(s) vs. current facility capabilities, 2) long-term NE mission activities, 3) WIPP certification requirements, and 4) budget considerations.

  8. To advance and share knowledge, discover solutions and promote opportunities in food and agriculture, bioenergy, health, the environment and human well-

    E-Print Network [OSTI]

    Sheridan, Jennifer

    and agriculture, bioenergy, health, the environment and human well- being. Vision: To lead in science, innovationMission: To advance and share knowledge, discover solutions and promote opportunities in food

  9. Scully field - Marion County, Kansas

    SciTech Connect (OSTI)

    Salgat, B.

    1983-08-01T23:59:59.000Z

    The Scully field is a multipay new-field discovery located in the southern end of Salina basin, Marion County, Kansas. The Scully field was discovered using a combination of satellite imagery and subsurface control. The overall trapping mechanism at the Scully field is anticlinal closure. Infield drilling has demonstrated, however, that significant stratigraphic variations do exist within the productive area. The Simpson sands have been subdivided in five separate units which range from 4 to 12 ft (1 to 4 m) in thickness. Three of these are of economic importance in the field. In general, the sands with the most economic potential are distributed within relative Ordovician paleolows. The Viola has four main lithologic divisions. The uppermost of these is a relatively thin dolomite cap which ranges from 2 to 15 ft (1 to 5 m). This upper dolomite is the primary Viola pay zone. The Mississippian section is eroded deeply over the Scully structure and demonstrates about 70 ft (20 m) of thinning. The potential pay interval is chert which has 25 to 30% porosity based on log analysis. The trapping mechanism is a combination of erosional truncation and structural closure. In addition to the structural information obtained from satellite imagery, R.J. Walker Oil Co., Inc., evaluated the hydrocarbon potential of T18S, R1E, Marion County, Kansas, which contains the Scully field, using remote sensing technology developed by Earth Reference Systems of Long Beach, California. The technology involves direct detection of hydrocarbons in place, using satellite data, nonlinear mathematics, and the fundamental principles of molecular structure and electromagnetic wave propagation.

  10. Field Guide

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField8,Dist.New Mexico Feb. 13,Conservation BillingFieldField

  11. Tachyonic field interacting with Scalar (Phantom) Field

    E-Print Network [OSTI]

    Surajit Chattopadhyay; Ujjal Debnath

    2009-01-29T23:59:59.000Z

    In this letter, we have considered the universe is filled with the mixture of tachyonic field and scalar or phantom field. If the tachyonic field interacts with scalar or phantom field, the interaction term decays with time and the energy for scalar field is transferred to tachyonic field or the energy for phantom field is transferred to tachyonic field. The tachyonic field and scalar field potentials always decrease, but phantom field potential always increases.

  12. A NEW POPULATION OF HIGH-z, DUSTY Ly{alpha} EMITTERS AND BLOBS DISCOVERED BY WISE: FEEDBACK CAUGHT IN THE ACT?

    SciTech Connect (OSTI)

    Bridge, Carrie R. [California Institute of Technology, MS249-17, Pasadena, CA 91125 (United States); Blain, Andrew [Department of Physics and Astronomy, University of Leicester, LE1 7RH Leicester (United Kingdom); Borys, Colin J. K.; Griffith, Roger L.; Tsai, Chao-Wei [Infrared Processing and Analysis Center, California Institute of Technology, MS 100-22, Pasadena, CA 91125 (United States); Petty, Sara; Farrah, Duncan [Department of Physics, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061 (United States); Benford, Dominic [NASA Goddard Space Flight Center, Greenbelt, MD 20771 (United States); Eisenhardt, Peter; Stern, Daniel; Wu Jingwen [Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Dr., Pasadena, CA 91109 (United States); Jarrett, Tom [Astronomy Department, University of Cape Town, Rondebosch 7701 (South Africa); Lonsdale, Carol [National Radio Astronomy Observatory, 520 Edgemont Road, Charlottesville, VA 22903 (United States); Stanford, Spencer A. [Department of Physics, University of California Davis, One Shields Ave., Davis, CA 95616 (United States); Wright, Edward L., E-mail: bridge@astro.caltech.edu [Astronomy Department, University of California Los Angeles, Los Angeles, CA 90095 (United States)

    2013-06-01T23:59:59.000Z

    By combining data from the NASA Wide-field Infrared Survey Explorer (WISE) mission with optical spectroscopy from the W. M. Keck telescope, we discover a mid-IR color criterion that yields a 78% success rate in identifying rare, typically radio-quiet, 1.6 {approx}< z {approx}< 4.6 dusty Ly{alpha} emitters (LAEs). Of these, at least 37% have emission extended on scales of 30-100 kpc and are considered Ly{alpha} ''blobs'' (LABs). The objects have a surface density of only {approx}0.1 deg{sup -2}, making them rare enough that they have been largely missed in deep, small area surveys. We measured spectroscopic redshifts for 92 of these galaxies, and find that the LAEs (LABs) have a median redshift of 2.3 (2.5). The WISE photometry coupled with data from Herschel (Herschel is an ESA space observatory with science instruments provided by European-led Principal Investigator consortia and with important participation from NASA) reveals that these galaxies are in the Hyper Luminous IR galaxy regime (L{sub IR} {approx}> 10{sup 13}-10{sup 14} L{sub Sun }) and have warm colors. They are typically more luminous and warmer than other dusty, z {approx} 2 populations such as submillimeter-selected galaxies and dust-obscured galaxies. These traits are commonly associated with the dust being illuminated by intense active galactic nucleus activity. We hypothesize that the combination of spatially extended Ly{alpha}, large amounts of warm IR-luminous dust, and rarity (implying a short-lived phase) can be explained if the galaxies are undergoing brief, intense ''feedback'' transforming them from an extreme dusty starburst/QSO into a mature galaxy.

  13. Evaluation of interim and final waste forms for the newly generated liquid low-level waste flowsheet

    SciTech Connect (OSTI)

    Abotsi, G.M.K. [Clark Atlanta Univ., GA (United States); Bostick, D.T.; Beck, D.E. [Oak Ridge National Lab., TN (United States)] [and others

    1996-05-01T23:59:59.000Z

    The purpose of this review is to evaluate the final forms that have been proposed for radioactive-containing solid wastes and to determine their application to the solid wastes that will result from the treatment of newly generated liquid low-level waste (NGLLLW) and Melton Valley Storage Tank (MVST) supernate at the Oak Ridge National Laboratory (ORNL). Since cesium and strontium are the predominant radionuclides in NGLLLW and MVST supernate, this review is focused on the stabilization and solidification of solid wastes containing these radionuclides in cement, glass, and polymeric materials-the principal waste forms that have been tested with these types of wastes. Several studies have shown that both cesium and strontium are leached by distilled water from solidified cement, although the leachabilities of cesium are generally higher than those of strontium under similar conditions. The situation is exacerbated by the presence of sulfates in the solution, as manifested by cracking of the grout. Additives such as bentonite, blast-furnace slag, fly ash, montmorillonite, pottery clay, silica, and zeolites generally decrease the cesium and strontium release rates. Longer cement curing times (>28 d) and high ionic strengths of the leachates, such as those that occur in seawater, also decrease the leach rates of these radionuclides. Lower cesium leach rates are observed from vitrified wastes than from grout waste forms. However, significant quantities of cesium are volatilized due to the elevated temperatures required to vitrify the waste. Hence, vitrification will generally require the use of cleanup systems for the off-gases to prevent their release into the atmosphere.

  14. CHOD/BVAM Chemotherapy and Whole-Brain Radiotherapy for Newly Diagnosed Primary Central Nervous System Lymphoma

    SciTech Connect (OSTI)

    Laack, Nadia N. [Department of Radiation Oncology, Mayo Clinic and Mayo Foundation, Rochester, Minnesota (United States); O'Neill, Brian Patrick, E-mail: boneill@mayo.edu [Department of Neurology, Mayo Clinic and Mayo Foundation, Rochester, Minnesota (United States); Ballman, Karla V.; O'Fallon, Judith Rich; Carrero, Xiomara W. [Division of Biostatistics, Mayo Clinic and Mayo Foundation, Rochester, Minnesota (United States); Kurtin, Paul J.; Scheithauer, Bernd W. [Department of Pathology, Mayo Clinic and Mayo Foundation, Rochester, Minnesota (United States); Brown, Paul D. [Department of Radiation Oncology, Mayo Clinic and Mayo Foundation, Rochester, Minnesota (United States); Habermann, Thomas M.; Colgan, Joseph P. [Division of Hematology, Mayo Clinic and Mayo Foundation, Rochester, Minnesota (United States); Gilbert, Mark R. [Department of Neuro-Oncology, The M.D. Anderson Cancer Center, Houston, Texas (United States); Hawkins, Roland B. [Oschner CCOP, New Orleans, Louisiana (United States); Morton, Roscoe F. [Iowa Oncology Research Association CCOP, Des Moines, Iowa (United States); Windschitl, Harry E. [CentraCare Clinic, St. Cloud, Minnesota (United States); Fitch, Tom R. [Division of Hematology, Mayo Clinic and Mayo Foundation, Rochester, Minnesota (United States); Pajon, Eduardo R. [Colorado Cancer Research Program, Denver, Colorado (United States)

    2011-10-01T23:59:59.000Z

    Purpose: To assess the efficacy and toxicity of chemotherapy consisting of cyclophosphamide, doxorubicin (Adriamycin), vincristine, and dexamethasone (CHOD) plus bis-chloronitrosourea (BCNU), cytosine arabinoside, and methotrexate (BVAM) followed by whole-brain irradiation (WBRT) for patients with primary central nervous system lymphoma (PCNSL). Methods and Materials: Patients 70 years old and younger with newly diagnosed, biopsy-proven PCNSL received one cycle of CHOD followed by two cycles of BVAM. Patients then received WBRT, 30.6 Gy, if a complete response was evoked, or 50.4 Gy if the response was less than complete; both doses were given in 1.8-Gy daily fractions. The primary efficacy endpoint was 1-year survival. Results: Thirty-six patients (19 men, 17 women) enrolled between 1995 and 2000. Median age was 60.5 years (range, 34 to 69 years). Thirty (83%) patients had baseline Eastern Cooperative Oncology Group performance scores of 0 to 1. All 36 patients were eligible for survival and response evaluations. Median time to progression was 12.3 months, and median survival was 18.5 months. The percentages of patients alive at 1, 2, and 3 years were 64%, 36%, and 33%, respectively. The best response was complete response in 10 patients and immediate progression in 7 patients. Ten (28%) patients had at least one grade 3 or higher neurologic toxicity. Conclusions: This regimen did improve the survival of PCNSL patients but also caused substantial toxicity. The improvement in survival is less than that reported with high-dose methotrexate-based therapies.

  15. Hypofractionation vs Conventional Radiation Therapy for Newly Diagnosed Diffuse Intrinsic Pontine Glioma: A Matched-Cohort Analysis

    SciTech Connect (OSTI)

    Janssens, Geert O., E-mail: g.janssens@rther.umcn.nl [Department of Radiation Oncology, Radboud University Nijmegen Medical Centre, Nijmegen (Netherlands); Jansen, Marc H. [Pediatric Oncology/Hematology, VU University Medical Center, Amsterdam (Netherlands)] [Pediatric Oncology/Hematology, VU University Medical Center, Amsterdam (Netherlands); Lauwers, Selmer J. [Department of Radiation Oncology, Radboud University Nijmegen Medical Centre, Nijmegen (Netherlands)] [Department of Radiation Oncology, Radboud University Nijmegen Medical Centre, Nijmegen (Netherlands); Nowak, Peter J. [Department of Radiation Oncology, Erasmus Medical Centre, Rotterdam (Netherlands)] [Department of Radiation Oncology, Erasmus Medical Centre, Rotterdam (Netherlands); Oldenburger, Foppe R. [Department of Radiation Oncology, Academic Medical Centre, Amsterdam (Netherlands)] [Department of Radiation Oncology, Academic Medical Centre, Amsterdam (Netherlands); Bouffet, Eric [Department of Hematology/Oncology, The Hospital for Sick Children, University of Toronto, Toronto (Canada)] [Department of Hematology/Oncology, The Hospital for Sick Children, University of Toronto, Toronto (Canada); Saran, Frank [Department of Pediatric Oncology, The Royal Marsden NHS Foundation Trust, Sutton (United Kingdom)] [Department of Pediatric Oncology, The Royal Marsden NHS Foundation Trust, Sutton (United Kingdom); Kamphuis-van Ulzen, Karin [Department of Radiology, Radboud University Nijmegen Medical Centre, Nijmegen (Netherlands)] [Department of Radiology, Radboud University Nijmegen Medical Centre, Nijmegen (Netherlands); Lindert, Erik J. van [Department of Neurosurgery, Radboud University Nijmegen Medical Centre, Nijmegen (Netherlands)] [Department of Neurosurgery, Radboud University Nijmegen Medical Centre, Nijmegen (Netherlands); Schieving, Jolanda H. [Department of Neurology, Radboud University Nijmegen Medical Centre, Nijmegen (Netherlands)] [Department of Neurology, Radboud University Nijmegen Medical Centre, Nijmegen (Netherlands); Boterberg, Tom [Department of Radiation Oncology, Ghent University Hospital, Ghent (Belgium)] [Department of Radiation Oncology, Ghent University Hospital, Ghent (Belgium); Kaspers, Gertjan J. [Pediatric Oncology/Hematology, VU University Medical Center, Amsterdam (Netherlands)] [Pediatric Oncology/Hematology, VU University Medical Center, Amsterdam (Netherlands); Span, Paul N.; Kaanders, Johannes H. [Department of Radiation Oncology, Radboud University Nijmegen Medical Centre, Nijmegen (Netherlands)] [Department of Radiation Oncology, Radboud University Nijmegen Medical Centre, Nijmegen (Netherlands); Gidding, Corrie E. [Department of Pediatric Oncology, Radboud University Nijmegen Medical Centre, Nijmegen (Netherlands)] [Department of Pediatric Oncology, Radboud University Nijmegen Medical Centre, Nijmegen (Netherlands); Hargrave, Darren [Department of Oncology, Great Ormond Street Hospital, London (United Kingdom)] [Department of Oncology, Great Ormond Street Hospital, London (United Kingdom)

    2013-02-01T23:59:59.000Z

    Purpose: Despite conventional radiation therapy, 54 Gy in single doses of 1.8 Gy (54/1.8 Gy) over 6 weeks, most children with diffuse intrinsic pontine glioma (DIPG) will die within 1 year after diagnosis. To reduce patient burden, we investigated the role of hypofractionation radiation therapy given over 3 to 4 weeks. A 1:1 matched-cohort analysis with conventional radiation therapy was performed to assess response and survival. Methods and Materials: Twenty-seven children, aged 3 to 14, were treated according to 1 of 2 hypofractionation regimens over 3 to 4 weeks (39/3 Gy, n=16 or 44.8/2.8 Gy, n=11). All patients had symptoms for {<=}3 months, {>=}2 signs of the neurologic triad (cranial nerve deficit, ataxia, long tract signs), and characteristic features of DIPG on magnetic resonance imaging. Twenty-seven patients fulfilling the same diagnostic criteria and receiving at least 50/1.8 to 2.0 Gy were eligible for the matched-cohort analysis. Results: With hypofractionation radiation therapy, the overall survival at 6, 9, and 12 months was 74%, 44%, and 22%, respectively. Progression-free survival at 3, 6, and 9 months was 77%, 43%, and 12%, respectively. Temporary discontinuation of steroids was observed in 21 of 27 (78%) patients. No significant difference in median overall survival (9.0 vs 9.4 months; P=.84) and time to progression (5.0 vs 7.6 months; P=.24) was observed between hypofractionation vs conventional radiation therapy, respectively. Conclusions: For patients with newly diagnosed DIPG, a hypofractionation regimen, given over 3 to 4 weeks, offers equal overall survival with less treatment burden compared with a conventional regimen of 6 weeks.

  16. Although subject of extensive studies in the last decades, a lot is still to be discovered in the field of proteasome research. The interdisciplinary efforts on the interface

    E-Print Network [OSTI]

    van den Brink, Jeroen

    . In an activity-based protein profiling setting, this novel fluorophore provides flexibility compared elements, being 1) the warhead, the electrophilic trap that reacts with the active site nucleophilic

  17. Smooth Field Theories and Homotopy Field Theories

    E-Print Network [OSTI]

    Wilder, Alan Cameron

    2011-01-01T23:59:59.000Z

    1 . . . . . . . . 4 Categories of Field Theories 4.1 Functorto super symmetric field theories. CRM Proceedings and0-dimensional super symmetric field theories. preprint 2008.

  18. Computing nonlinear force free coronal magnetic fields

    E-Print Network [OSTI]

    T. Wiegelmann; T. Neukirch

    2008-01-21T23:59:59.000Z

    Knowledge of the structure of the coronal magnetic field is important for our understanding of many solar activity phenomena, e.g. flares and CMEs. However, the direct measurement of coronal magnetic fields is not possible with present methods, and therefore the coronal field has to be extrapolated from photospheric measurements. Due to the low plasma beta the coronal magnetic field can usually be assumed to be approximately force free, with electric currents flowing along the magnetic field lines. There are both observational and theoretical reasons which suggest that at least prior to an eruption the coronal magnetic field is in a nonlinear force free state. Unfortunately the computation of nonlinear force free fields is way more difficult than potential or linear force free fields and analytic solutions are not generally available. We discuss several methods which have been proposed to compute nonlinear force free fields and focus particularly on an optimization method which has been suggested recently. We compare the numerical performance of a newly developed numerical code based on the optimization method with the performance of another code based on an MHD relaxation method if both codes are applied to the reconstruction of a semi-analytic nonlinear force-free solution. The optimization method has also been tested for cases where we add random noise to the perfect boundary conditions of the analytic solution, in this way mimicking the more realistic case where the boundary conditions are given by vector magnetogram data. We find that the convergence properties of the optimization method are affected by adding noise to the boundary data and we discuss possibilities to overcome this difficulty.

  19. Cosmological simulations with disformally coupled symmetron fields

    E-Print Network [OSTI]

    R. Hagala; C. Llinares; D. F. Mota

    2015-04-27T23:59:59.000Z

    We use N-body simulations to study the matter distribution in disformal gravity. The disformal model studied here is a conformally coupled symmetron field with an additional exponential disformal term. We conduct cosmological simulations with the aim to find the impact of the new disformal terms in the matter power spectrum, halo mass function and radial profile of the scalar field. This is done by calculating the disformal geodesic equation and the equation of motion for the scalar field, then implementing them into the N-body code ISIS, which is a modified gravity version of the code RAMSES. The presence of a conformal symmetron field increases both the power spectrum and mass function compared to standard gravity on small scales. Our main result is that the newly added disformal terms tend to counteract this effects and can make the evolution slightly closer to standard gravity. We finally show that the disformal terms give rise to oscillations of the scalar field in the centre of the dark matter haloes.

  20. Discover Northwestern: Chicago Campus

    E-Print Network [OSTI]

    Shahriar, Selim

    @northwestern.edu Printed 12/2012 Printed on recycled paper If you decide to drive, limited parking is available = $_________ Annual maintenance cost Recent statistics from AAA show that the average cost of maintenance and tires

  1. DiscoverE Foundation

    National Nuclear Security Administration (NNSA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilA Approved:AdministrationAnalysisDarby/%2AO 474.2 Chg U.S.09 |radioactive9/%2A

  2. Entomology 489 Field Entomology Field Project Guide

    E-Print Network [OSTI]

    Behmer, Spencer T.

    with information, people, materials). Field Projects (your project should...) FEntomology 489 ­ Field Entomology Field Project Guide A small-group field project is required for ENTO 489 ­ Field Entomology. This guide provides general information about the field-project

  3. HIP 38939B: A NEW BENCHMARK T DWARF IN THE GALACTIC PLANE DISCOVERED WITH Pan-STARRS1

    SciTech Connect (OSTI)

    Deacon, Niall R.; Liu, Michael C.; Magnier, Eugene A.; Bowler, Brendan P.; Burgett, W. S.; Chambers, K. C.; Flewelling, H.; Kaiser, N.; Morgan, J. S.; Sweeney, W. E.; Tonry, J. L.; Wainscoat, R. J.; Waters, C. [Institute for Astronomy, University of Hawaii, 2680 Woodlawn Drive, Honolulu, HI 96822 (United States); Redstone, Joshua [Facebook, 1601 S. California Avenue, Palo Alto, CA 94304 (United States); Goldman, Bertrand [Max Planck Institute for Astronomy, Koenigstuhl 17, D-69117 Heidelberg (Germany); Price, P. A., E-mail: deacon@mpia.de [Princeton University Observatory, 4 Ivy Lane, Peyton Hall, Princeton University, Princeton, NJ 08544 (United States)

    2012-08-20T23:59:59.000Z

    We report the discovery of a wide brown dwarf companion to the mildly metal-poor ([Fe/H] = -0.24), low Galactic latitude (b = 1.{sup 0}88) K4V star HIP 38939. The companion was discovered by its common proper motion with the primary and its red optical (Pan-STARRS1) and blue infrared (Two Micron All Sky Survey) colors. It has a projected separation of 1630 AU and a near-infrared spectral type of T4.5. As such it is one of only three known companions to a main-sequence star which have early/mid T spectral types of (the others being HN Peg B and {epsilon} Indi B). Using chromospheric activity we estimate an age for the primary of 900{+-}{sup 1900}{sub 600} Myr. This value is also in agreement with the age derived from the star's weak ROSAT detection. Comparison with evolutionary models for this age range indicates that HIP 38939B falls in the mass range 38 {+-} 20 M{sub Jup} with an effective temperature range of 1090 {+-} 60 K. Fitting our spectrum with atmospheric models gives a best-fitting temperature of 1100 K. We include our object in an analysis of the population of benchmark T dwarfs and find that while older atmospheric models appeared to overpredict the temperature of the coolest objects compared to evolutionary models, more recent atmospheric models provide better agreement.

  4. Through GW's physics program, you can study the fundamental laws discovered in physics and see how they apply to all the

    E-Print Network [OSTI]

    Vertes, Akos

    1 Physics PHYSICS Through GW's physics program, you can study the fundamental laws discovered in physics and see how they apply to all the sciences and the world in which we live. Physics is part. Through courses ranging from classical mechanics to electromagnetic theory, the physics program aims

  5. For Release: 9:20 a.m. PST, January 9, 2007 CHANDRA X-RAY TELESCOPE DISCOVERS COMPANION TO BRIGHT STAR IN THE

    E-Print Network [OSTI]

    Cohen, David

    : Australia, Brazil, New Zealand, Papua New Guinea, and Samoa. The companion star was discovered accidentally the highly supersonic stellar winds of hot, luminous stars produce x-rays, and we were surprised to see two that of the Sun, is very luminous (giving off about 34,000 times as much energy as our Sun every second

  6. DISCOVER-AQ Outlook for Friday, July 21, 2011 High surface temperatures of near 100 F today in the study region have led to substantial ozone

    E-Print Network [OSTI]

    Orange for PM2.5 today, which is the first time that has occurred during DISCOVER-AQ. South and SW winds expected. Southerly winds continue to bring moisture into our region. 500 mb NAM at 2 PM. #12;Tomorrow Saturday: Heat and humidity sticks around. Sunday: Hot, sticky, and cloud coverage > 50%. Light Winds Juicy

  7. On Field Constraint Analysis

    E-Print Network [OSTI]

    Wies, Thomas

    2005-11-03T23:59:59.000Z

    We introduce field constraint analysis, a new technique for verifying data structure invariants. A field constraint for a field is a formula specifying a set of objects to which the field can point. Field constraints ...

  8. Gravitational resonance spectroscopy with an oscillating magnetic field gradient in the GRANIT flow through arrangement

    E-Print Network [OSTI]

    G. Pignol; S. Baessler; V. V. Nesvizhevsky; K. Protasov; D. Rebreyend; A. Yu. Voronin

    2014-08-05T23:59:59.000Z

    Gravitational resonance spectroscopy consists in measuring the energy spectrum of bouncing ultracold neutrons above a mirror by inducing resonant transitions between different discrete quantum levels. We discuss how to induce the resonances with a flow through arrangement in the GRANIT spectrometer, excited by an oscillating magnetic field gradient. The spectroscopy could be realized in two distinct modes (so called DC and AC) using the same device to produce the magnetic excitation. We present calculations demonstrating the feasibility of the newly proposed AC mode.

  9. Unitizing and waterflooding the California Yowlumne Oil Field

    SciTech Connect (OSTI)

    Burzlaff, A.A.

    1983-03-01T23:59:59.000Z

    The Yowlumne field, located at the southern end of the San Joaquin Valley of California, is one of the largest new onshore oil fields discovered in California in the past twenty years. The field, at an average depth of 12,200', has produced over 42 million barrels of oil since its discovery in 1974. In May, 1982, a portion of the Yowlumne field was unitized and called Yowlumne Unit ''B''. Nine operators and about 160 royalty owners cooperated to form this unit. A two phase unitization formula based on remaining primary and initial hydrocarbon pore volume was used to form Unit ''B''. A secondary waterflood project is being implemented which is estimated to increase oil recovery by some 25 million barrels.

  10. Smooth Field Theories and Homotopy Field Theories

    E-Print Network [OSTI]

    Wilder, Alan Cameron

    2011-01-01T23:59:59.000Z

    CHAPTER 3. FIELD THEORIES Definition 3.2.1. A smooth fielda ’top down’ definition of field theories. Taking as ourin the following. Definition A field theory is a symmetric

  11. Tube-wave Effects in Cross-Well Seismic Data at Stratton Field Valeri Korneev, Lawrence Berkeley National Laboratory, Jorge Parra, South-West Research Institute,

    E-Print Network [OSTI]

    Korneev, Valeri A.

    Tube-wave Effects in Cross-Well Seismic Data at Stratton Field Valeri Korneev, Lawrence Berkeley vertical plane. The data were collected in the receiver wells Ward159 and Ward145, while sources were The analysis of crosswell seismic data for a gas reservoir in Texas revealed two newly detected seismic wave

  12. Magnetic Field Safety Magnetic Field Safety

    E-Print Network [OSTI]

    McQuade, D. Tyler

    Magnetic Field Safety Training #12;Magnetic Field Safety Strong Magnetic Fields exist around energized magnets. High magnetic fields alone are a recognized hazard only for personnel with certain medical conditions such as pacemakers, magnetic implants, or embedded shrapnel. In addition, high magnetic

  13. Tracking Elevated Pollution Layers with a Newly Developed Hyperspectral Sun/Sky Spectrometer (4STAR): Results from the TCAP 2012 and 2013 Campaigns

    SciTech Connect (OSTI)

    Segal Rozenhaimer, Michal; Russell, P. B.; Schmid, Beat; Redemann, Jens; Livingston, J. M.; Flynn, Connor J.; Johnson, Roy R.; Dunagan, Stephen; Shinozuka, Yohei; Herman, J. R.; Cede, A.; Abuhassan, N.; Comstock, Jennifer M.; Hubbe, John M.; Zelenyuk, Alla; Wilson, Jacqueline M.

    2014-03-16T23:59:59.000Z

    Total columnar amounts of water vapor, nitrogen dioxide (NO2) and ozone (O3) are derived from a newly developed, hyperspectral airborne sun-sky spectrometer (4STAR) for the first time during the two intensive phases of the Two Column Aerosol Project (TCAP) in summer 2012 and winter 2013 aboard the DOE G-1 aircraft. We compare results with coincident measurements. We find 0.045 g/cm2 (4.2%) negative bias and 0.28 g/cm2 (26.3%) root-mean-square (RMS) difference in water vapor layer comparison with in-situ hygrometer, and an overall RMS difference of 1.28 g/m3 (38%) water vapor amount in profile by profile comparisons, with differences distributed evenly around zero in most cases. The RMS differences for O3 values average to 3%, with a 1% negative bias for 4STAR compared with the spaceborne Ozone Measuring Instrument (OMI) along the aircraft flight-track for 14 flights during both TCAP phases. Ground-based comparisons with the Pandora spectrometer system at the Goddard Space Flight Center (GSFC), Greenbelt, Maryland showed excellent agreement between the instruments for both O3 and NO2, further emphasizing 4STAR’s new capabilities. During the summer phase, we have succeeded in identifying variations in elevated pollution layers corresponding to urban pollution outflow and transported biomass burning. This was done using clustering analysis of the retrieved products (e.g. Ĺngstrom exponent, NO2 and columnar water vapor), and was confirmed by aerosol type identification by HSRL2 aboard the NASA B-200 aircraft. These newly demonstrated 4STAR capabilities are expected to be instrumental in improving our understanding of atmospheric composition variability and aerosol-trace-gas interactions; they open new horizons and opportunities in airborne sunphotometry.

  14. A New Solution of Einstein Vacuum Field Equations

    E-Print Network [OSTI]

    Ram Gopal Vishwakarma

    2014-09-11T23:59:59.000Z

    A new solution of Einstein's vacuum field equations is discovered which appears as a generalization of the well-known Ozsvath-Schucking solution and explains its source of curvature which has otherwise remained hidden. Curiously, the new solution has a vanishing Kretschmann scalar and is singularity-free despite being curved. The discovery of the new solution is facilitated by a new insight which reveals that it is always possible to define the source of curvature in a vacuum solution in terms of some dimensional parameters. As the parameters vanish, so does the curvature. The new insight also helps to make the vacuum solutions Machian.

  15. Magnetic fields, spots and weather in chemically peculiar stars

    E-Print Network [OSTI]

    O. Kochukhov

    2007-11-30T23:59:59.000Z

    New observational techniques and sophisticated modelling methods has led to dramatic breakthroughs in our understanding of the interplay between the surface magnetism, atomic diffusion and atmospheric dynamics in chemically peculiar stars. Magnetic Doppler images, constructed using spectropolarimetric observations of Ap stars in all four Stokes parameters, reveal the presence of small-scale field topologies. Abundance Doppler mapping has been perfected to the level where distributions of many different chemical elements can be deduced self-consistently for one star. The inferred chemical spot structures are diverse and do not always trace underlying magnetic field geometry. Moreover, horizontal chemical inhomogeneities are discovered in non-magnetic CP stars and evolving chemical spots are observed for the first time in the bright mercury-manganese star alpha And. These results show that in addition to magnetic fields, another important non-magnetic structure formation mechanism acts in CP stars.

  16. Landslide oil field, San Joaquin Valley, California

    SciTech Connect (OSTI)

    Collins, B.P.; March, K.A.; Caballero, J.S.; Stolle, J.M.

    1988-03-01T23:59:59.000Z

    The Landslide field, located at the southern margin of the San Joaquin basin, was discovered in 1985 by a partnership headed by Channel Exploration Company, on a farm out from Tenneco Oil Company. Initial production from the Tenneco San Emidio 63X-30 was 2064 BOPD, making landslide one of the largest onshore discoveries in California during the past decade. Current production is 7100 BOPD from a sandstone reservoir at 12,500 ft. Fifteen wells have been drilled in the field, six of which are water injectors. Production from the Landslide field occurs from a series of upper Miocene Stevens turbidite sandstones that lie obliquely across an east-plunging structural nose. These turbidite sandstones were deposited as channel-fill sequences within a narrowly bounded levied channel complex. Both the Landslide field and the larger Yowlumne field, located 3 mi to the northwest, comprise a single channel-fan depositional system that developed in the restricted deep-water portion of the San Joaquin basin. Information from the open-hole logs, three-dimensional surveys, vertical seismic profiles, repeat formation tester data, cores, and pressure buildup tests allowed continuous drilling from the initial discovery to the final waterflood injector, without a single dry hole. In addition, the successful application of three-dimensional seismic data in the Landslide development program has helped correctly image channel-fan anomalies in the southern Maricopa basin, where data quality and severe velocity problems have hampered previous efforts. New exploration targets are currently being evaluated on the acreage surrounding the Landslide discovery and should lead to an interesting new round of drilling activity in the Maricopa basin.

  17. Quantum Field Theory & Gravity

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

    Quantum Field Theory & Gravity Quantum Field Theory & Gravity Understanding discoveries at the Energy, Intensity, and Cosmic Frontiers Get Expertise Rajan Gupta (505) 667-7664...

  18. Mon. Not. R. Astron. Soc. 363, L76L80 (2005) doi:10.1111/j.1745-3933.2005.00086.x GRB 050223: a faint gamma-ray burst discovered by Swift

    E-Print Network [OSTI]

    Zhang, Bing

    : a faint gamma-ray burst discovered by Swift K. L. Page,1 E. Rol,1 A. J. Levan,1 B. Zhang,2 J. P. Osborne,1 was discovered by the Swift Gamma-Ray Burst Explorer on 2005 February 23 and was the first gamma-ray burst (GRB. Key words: gamma-rays: bursts. 1 INTRODUCTION The Swift Gamma-Ray Burst Explorer (Gehrels et al. 2004

  19. Benchmark Modeling of the Near-Field and Far-Field Wave Effects of Wave Energy Arrays

    SciTech Connect (OSTI)

    Rhinefrank, Kenneth E.; Haller, Merrick C.; Ozkan-Haller, H. Tuba

    2013-01-26T23:59:59.000Z

    This project is an industry-led partnership between Columbia Power Technologies and Oregon State University that will perform benchmark laboratory experiments and numerical modeling of the near-field and far-field impacts of wave scattering from an array of wave energy devices. These benchmark experimental observations will help to fill a gaping hole in our present knowledge of the near-field effects of multiple, floating wave energy converters and are a critical requirement for estimating the potential far-field environmental effects of wave energy arrays. The experiments will be performed at the Hinsdale Wave Research Laboratory (Oregon State University) and will utilize an array of newly developed BuoysĂ?Â?Ă?Â?Ă?Â?Ă?Âť that are realistic, lab-scale floating power converters. The array of Buoys will be subjected to realistic, directional wave forcing (1:33 scale) that will approximate the expected conditions (waves and water depths) to be found off the Central Oregon Coast. Experimental observations will include comprehensive in-situ wave and current measurements as well as a suite of novel optical measurements. These new optical capabilities will include imaging of the 3D wave scattering using a binocular stereo camera system, as well as 3D device motion tracking using a newly acquired LED system. These observing systems will capture the 3D motion history of individual Buoys as well as resolve the 3D scattered wave field; thus resolving the constructive and destructive wave interference patterns produced by the array at high resolution. These data combined with the device motion tracking will provide necessary information for array design in order to balance array performance with the mitigation of far-field impacts. As a benchmark data set, these data will be an important resource for testing of models for wave/buoy interactions, buoy performance, and far-field effects on wave and current patterns due to the presence of arrays. Under the proposed project we will initiate high-resolution (fine scale, very near-field) fluid/structure interaction simulations of buoy motions, as well as array-scale, phase-resolving wave scattering simulations. These modeling efforts will utilize state-of-the-art research quality models, which have not yet been brought to bear on this complex problem of large array wave/structure interaction problem.

  20. The Economic and Environmental Aspects of Heat Exchanger Cleaning -- How FP&L Has Used the Newly Patented MCC Process to Clean Turbine Lube Oil Coolers to Maximize Efficiency and Minimize Waste

    E-Print Network [OSTI]

    Wood, H. A. T.

    of efficient and timely cleaning of heat exchangers. There are great differences in the cleaning processes that are used to clean exchanger bundles in industry today. The cleaning of turbine lube oil coolers is a specialized case in point. A newly patented...

  1. Introduction Classical Field Theory

    E-Print Network [OSTI]

    Baer, Christian

    Introduction Classical Field Theory Locally Covariant Quantum Field Theory Renormalization Time evolution Conclusions and outlook Locality and Algebraic Structures in Field Theory Klaus Fredenhagen II¨utsch and Pedro Lauridsen Ribeiro) Klaus Fredenhagen Locality and Algebraic Structures in Field Theory #12

  2. Construction and exact solution of a nonlinear quantum field model in quasi-higher dimension

    E-Print Network [OSTI]

    Kundu, Anjan

    2015-01-01T23:59:59.000Z

    Nonperturbative exact solutions are allowed for quantum integrable models in one space-dimension. Going beyond this class we propose an alternative Lax matrix approach, exploiting the hidden multi-time concept in integrable systems and construct a novel quantum nonlinear Schr\\"odinger model in quasi-two dimensions. An intriguing field commutator is discovered, confirming the integrability of the model and yielding its exact Bethe ansatz solution with rich scattering and bound-state properties. The universality of the scheme is expected to cover diverse models, opening up a new direction in the field.

  3. Medium and Heavy Duty Vehicle Field Evaluations (Presentation)

    SciTech Connect (OSTI)

    Walkowicz, K.

    2014-06-01T23:59:59.000Z

    This presentation discusses field evaluations of medium- and heavy-duty vehicles performed by NREL. The project provides medium-duty (MD) and heavy-duty (HD) test results, aggregated data, and detailed analysis, including 3rd party unbiased data (data that would not normally be shared by industry in an aggregated and detailed manner). Over 5.6 million miles of advanced technology MD and HD truck data have been collected, documented, and analyzed on over 240 different vehicles since 2002. Data, analysis, and reports are shared within DOE, national laboratory partners, and industry for R&D planning and strategy. The results help guide R&D for new technology development, help define intelligent usage of newly developed technology, and help fleets/users understand all aspects of advanced technology.

  4. Determination of Electric-Field, Magnetic-Field, and Electric...

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

    Electric-Field, Magnetic-Field, and Electric-Current Distributions of Infrared Optical Antennas: A Near-Field Determination of Electric-Field, Magnetic-Field, and Electric-Current...

  5. BUFFERED WELL FIELD OUTLINES

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

    OIL & GAS FIELD OUTLINES FROM BUFFERED WELLS The VBA Code below builds oil & gas field boundary outlines (polygons) from buffered wells (points). Input well points layer must be a...

  6. When Fields Collide

    E-Print Network [OSTI]

    Kaiser, David I.

    Particle cosmology is among the hottest of hot topics in physics today. The field investigates the smallest units of matter and their role in determining the shape and fate of the entire universe. In recent years the field ...

  7. Double field theory

    E-Print Network [OSTI]

    Hull, Chris

    The zero modes of closed strings on a torus — the torus coordinates plus dual coordinates conjugate to winding number — parameterize a doubled torus. In closed string field theory, the string field depends on all zero-modes ...

  8. String Field Theory

    E-Print Network [OSTI]

    Washington Taylor

    2006-06-28T23:59:59.000Z

    This elementary introduction to string field theory highlights the features and the limitations of this approach to quantum gravity as it is currently understood. String field theory is a formulation of string theory as a field theory in space-time with an infinite number of massive fields. Although existing constructions of string field theory require expanding around a fixed choice of space-time background, the theory is in principle background-independent, in the sense that different backgrounds can be realized as different field configurations in the theory. String field theory is the only string formalism developed so far which, in principle, has the potential to systematically address questions involving multiple asymptotically distinct string backgrounds. Thus, although it is not yet well defined as a quantum theory, string field theory may eventually be helpful for understanding questions related to cosmology in string theory.

  9. Covariant Noncommutative Field Theory

    SciTech Connect (OSTI)

    Estrada-Jimenez, S. [Licenciaturas en Fisica y en Matematicas, Facultad de Ingenieria, Universidad Autonoma de Chiapas Calle 4a Ote. Nte. 1428, Tuxtla Gutierrez, Chiapas (Mexico); Garcia-Compean, H. [Departamento de Fisica, Centro de Investigacion y de Estudios Avanzados del IPN P.O. Box 14-740, 07000 Mexico D.F., Mexico and Centro de Investigacion y de Estudios Avanzados del IPN, Unidad Monterrey Via del Conocimiento 201, Parque de Investigacion e Innovacion Tecnologica (PIIT) Autopista nueva al Aeropuerto km 9.5, Lote 1, Manzana 29, cp. 66600 Apodaca Nuevo Leon (Mexico); Obregon, O. [Instituto de Fisica de la Universidad de Guanajuato P.O. Box E-143, 37150 Leon Gto. (Mexico); Ramirez, C. [Facultad de Ciencias Fisico Matematicas, Universidad Autonoma de Puebla, P.O. Box 1364, 72000 Puebla (Mexico)

    2008-07-02T23:59:59.000Z

    The covariant approach to noncommutative field and gauge theories is revisited. In the process the formalism is applied to field theories invariant under diffeomorphisms. Local differentiable forms are defined in this context. The lagrangian and hamiltonian formalism is consistently introduced.

  10. Old geologists, old fields, new ideas, new techniques - New reserves

    SciTech Connect (OSTI)

    Borg, W.M.; Wilson, J.R.

    1991-08-01T23:59:59.000Z

    The recent discovery of Viola production on the flank of the Lucien field has focused attention to the presence of fractured reservoirs on the flank of old producing structures along the Nemaha Ridge and elsewhere in Oklahoma. Recognizing that many of these old fields have not been published in any detail, the authors have begun a series of field studies, concentrating on fields that were discovered before mid-1950. In order to do this job as quickly and economically as possible, computer technology is being employed. Data bases have been purchased from services such as GDS. Computers have been employed to create a series of structure and isopach maps. The use of computers has made it possible to quickly develop second-derivative structure maps which indicate those areas most prone to fracturing. The authors then suggest that the development of these fractured reservoirs could best be accomplished by horizontal drilling. For those old geologists who are intimidated by computers or don't care to become computer experts, the availability of published databases and computer mapping services lets the geologist combine his experience and knowledge with new technology in the development of prospects and new reserves. A series of field studies will be presented as time permits.

  11. Facilities Management Field Services

    E-Print Network [OSTI]

    Hickman, Mark

    Facilities Management Field Services FieldStationsAnnualReport2006 #12;Cover Photo by Dr Mark Jermy coast #12; Introduction A very wet Steve Weaver emerges from the river. Ah, field work! The Government broadband, at least there is now an alternative to the telephone line. Electrical power spikes (and outages

  12. Covariant Hamiltonian Field Theory

    E-Print Network [OSTI]

    Jürgen Struckmeier; Andreas Redelbach

    2012-05-22T23:59:59.000Z

    A consistent, local coordinate formulation of covariant Hamiltonian field theory is presented. Whereas the covariant canonical field equations are equivalent to the Euler-Lagrange field equations, the covariant canonical transformation theory offers more general means for defining mappings that preserve the form of the field equations than the usual Lagrangian description. It is proved that Poisson brackets, Lagrange brackets, and canonical 2-forms exist that are invariant under canonical transformations of the fields. The technique to derive transformation rules for the fields from generating functions is demonstrated by means of various examples. In particular, it is shown that the infinitesimal canonical transformation furnishes the most general form of Noether's theorem. We furthermore specify the generating function of an infinitesimal space-time step that conforms to the field equations.

  13. Forces in electromagnetic field and gravitational field

    E-Print Network [OSTI]

    Zihua Weng

    2011-03-31T23:59:59.000Z

    The force can be defined from the linear momentum in the gravitational field and electromagnetic field. But this definition can not cover the gradient of energy. In the paper, the force will be defined from the energy and torque in a new way, which involves the gravitational force, electromagnetic force, inertial force, gradient of energy, and some other new force terms etc. One of these new force terms can be used to explain why the solar wind varies velocity along the magnetic force line in the interplanetary space between the sun and the earth.

  14. Regularization Predicts While Discovering Taxonomy

    E-Print Network [OSTI]

    Mroueh, Youssef

    2011-06-03T23:59:59.000Z

    In this work we discuss a regularization framework to solve multi-category when the classes are described by an underlying class taxonomy. In particular we discuss how to learn the class taxonomy while learning a multi-category ...

  15. Discovering Conservation Rules Lukasz Golab #

    E-Print Network [OSTI]

    Greenberg, Albert

    Srivastava # University of Waterloo, Canada lgolab@uwaterloo.ca AT&T Labs - Research, Florham Park, NJ, USA networks are essential for the transmission of multimedia data; and electricity networks deliver power from network performance and understand provisioning requirements. Also, the smart grid overlays an electricity

  16. Discovering Treewidth Hans L. Bodlaender

    E-Print Network [OSTI]

    Utrecht, Universiteit

    be found in the work by Koster, van Hoesel, and Kolen [80], where tree decompositions are used to solve

  17. Discover all the opportunities in

    E-Print Network [OSTI]

    Liskiewicz, Maciej

    Program, Virginia State, Petersburg. 028/0311/490112 EEXPERIENCEXPERIENCE 44--HH ININ PPOWHATANOWHATAN

  18. Unique Auxin Regulation Mechanism Discovered

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

    Wednesday, 29 August 2007 00:00 The plant hormone auxin regulates many plant growth and development processes, including shoot growth, root branching, fruit ripening, tropisms,...

  19. 2006 Annual Report: Discovering Solutions

    SciTech Connect (OSTI)

    none,

    2006-01-01T23:59:59.000Z

    This annual report includes: a brief overview of Western; FY 2006 highlights; FY 2006 Integrated Resource Planning, or IRP, summary; and financial data.

  20. Unique Auxin Regulation Mechanism Discovered

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What'sis Taking Over OurThe Iron Spin TransitionProgramUndergraduateUnexpectedDepartment

  1. Unique Auxin Regulation Mechanism Discovered

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What'sis Taking Over OurThe Iron Spin TransitionProgramUndergraduateUnexpectedDepartmentUnique Auxin

  2. Unique Auxin Regulation Mechanism Discovered

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What'sis Taking Over OurThe Iron Spin TransitionProgramUndergraduateUnexpectedDepartmentUnique

  3. Unique Auxin Regulation Mechanism Discovered

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What'sis Taking Over OurThe Iron Spin TransitionProgramUndergraduateUnexpectedDepartmentUniqueUnique

  4. Discover Power | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual Siteof Energy 2,AUDIT REPORTEnergy OffshoreDeveloper - Q & A HomeDifko Vind A S

  5. Unique Auxin Regulation Mechanism Discovered

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del SolStrengthening aTurbulence mayUndergraduate ProgramCenter |SolarUnions, LANL

  6. Field emission electron source

    DOE Patents [OSTI]

    Zettl, Alexander Karlwalter (Kensington, CA); Cohen, Marvin Lou (Berkeley, CA)

    2000-01-01T23:59:59.000Z

    A novel field emitter material, field emission electron source, and commercially feasible fabrication method is described. The inventive field emission electron source produces reliable electron currents of up to 400 mA/cm.sup.2 at 200 volts. The emitter is robust and the current it produces is not sensitive to variability of vacuum or the distance between the emitter tip and the cathode. The novel emitter has a sharp turn-on near 100 volts.

  7. Theory of electromagnetic fields

    E-Print Network [OSTI]

    Wolski, Andrzej

    2011-01-01T23:59:59.000Z

    We discuss the theory of electromagnetic fields, with an emphasis on aspects relevant to radiofrequency systems in particle accelerators. We begin by reviewing Maxwell's equations and their physical significance. We show that in free space, there are solutions to Maxwell's equations representing the propagation of electromagnetic fields as waves. We introduce electromagnetic potentials, and show how they can be used to simplify the calculation of the fields in the presence of sources. We derive Poynting's theorem, which leads to expressions for the energy density and energy flux in an electromagnetic field. We discuss the properties of electromagnetic waves in cavities, waveguides and transmission lines.

  8. Hot Pot Field Observations

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Lane, Michael

    Map of field observations including depressions, springs, evidence of former springs, travertine terraces and vegetation patterns. Map also contains interpretation of possible spring alignments.

  9. Field emission chemical sensor

    DOE Patents [OSTI]

    Panitz, J.A.

    1983-11-22T23:59:59.000Z

    A field emission chemical sensor for specific detection of a chemical entity in a sample includes a closed chamber enclosing two field emission electrode sets, each field emission electrode set comprising (a) an electron emitter electrode from which field emission electrons can be emitted when an effective voltage is connected to the electrode set; and (b) a collector electrode which will capture said electrons emitted from said emitter electrode. One of the electrode sets is passive to the chemical entity and the other is active thereto and has an active emitter electrode which will bind the chemical entity when contacted therewith.

  10. Hot Pot Field Observations

    SciTech Connect (OSTI)

    Lane, Michael

    2013-06-28T23:59:59.000Z

    Map of field observations including depressions, springs, evidence of former springs, travertine terraces and vegetation patterns. Map also contains interpretation of possible spring alignments.

  11. Constructive Quantum Field Theory

    E-Print Network [OSTI]

    Giovanni Gallavotti

    2005-10-04T23:59:59.000Z

    A review of the renormalization group approach to the proof of non perturbative ultraviolet stability in scalar field theories in dimension d=2,3.

  12. Electromagnetic Lorenz Fields

    E-Print Network [OSTI]

    H. C. Potter

    2008-12-16T23:59:59.000Z

    Gauge transformations are potential transformations that leave only specific Maxwell fields invariant. To reveal more, I develop Lorenz field equations with full Maxwell form for nongauge, sans gauge function, transformations yielding mixed, superposed retarded and outgoing, potentials. The form invariant Lorenz condition is then a charge conservation equivalent. This allows me to define three transformation classes that screen for Lorenz relevance. The nongauge Lorentz conditions add polarization fields which support emergent, light-like rays that convey energy on charge conserving phase points. These localized rays escape discovery in modern Maxwell fields where the polarizations are suppressed by gauge transformations.

  13. Merger-driven Fueling of Active Galactic Nuclei: Six Dual and Offset Active Galactic Nuclei Discovered with Chandra and Hubble Space Telescope Observations

    E-Print Network [OSTI]

    Comerford, Julia M; Barrows, R Scott; Greene, Jenny E; Zakamska, Nadia L; Madejski, Greg M; Cooper, Michael C

    2015-01-01T23:59:59.000Z

    Dual active galactic nuclei (AGNs) and offset AGNs are kpc-scale separation supermassive black holes pairs created during galaxy mergers, where both or one of the black holes are AGNs, respectively. These dual and offset AGNs are valuable probes of the link between mergers and AGNs but are challenging to identify. Here we present Chandra/ACIS observations of 12 optically-selected dual AGN candidates at z < 0.34, where we use the X-rays to identify AGNs. We also present HST/WFC3 observations of 10 of these candidates, which reveal any stellar bulges accompanying the AGNs. We discover a dual AGN system with separation of 2.2 kpc, where the two stellar bulges have coincident [O III] and X-ray sources. This system is an extremely minor merger (460:1) that may include a dwarf galaxy hosting an intermediate mass black hole. We also find six single AGNs, and five systems that are either dual or offset AGNs with separations < 10 kpc. Four of the six dual AGNs and dual/offset AGNs are in ongoing major mergers, a...

  14. 221B Lecture Notes Quantum Field Theory III (Radiation Field)

    E-Print Network [OSTI]

    Murayama, Hitoshi

    221B Lecture Notes Quantum Field Theory III (Radiation Field) 1 Quantization of Radiation Field was quantized: photons. Now that we have gone through quantization of a classical field (Schr¨odinger field so far), we can proceed to quantize the Maxwell field. The basic idea is pretty much the same, except

  15. 221B Lecture Notes Quantum Field Theory IV (Radiation Field)

    E-Print Network [OSTI]

    Murayama, Hitoshi

    221B Lecture Notes Quantum Field Theory IV (Radiation Field) 1 Quantization of Radiation Field was quantized: photons. Now that we have gone through quantization of a classical field (Schr¨odinger field so far), we can proceed to quantize the Maxwell field. The basic idea is pretty much the same, except

  16. UNCORRECTEDPROOF Please cite this article in press as: Arinaminpathy, Y. et al. Computational analysis of membrane proteins: the largest class of drug targets, Drug Discov Today (2009), doi:10.1016/

    E-Print Network [OSTI]

    Gerstein, Mark

    2009-01-01T23:59:59.000Z

    analysis of membrane proteins: the largest class of drug targets, Drug Discov Today (2009), doi:10.1016/ j.drudis.2009.08.006 Drug Discovery Today Volume 00, Number 00 September 2006 REVIEWS Computational analysis disorders, such as hypertension, congestive heart failure, stroke and cancer. On a similar scale, genetic

  17. Surfing may be one of the most complex motor tasks to learn. Knowing this, we will take you on a journey through Europe to discover the latest findings about motor learning and

    E-Print Network [OSTI]

    Cengarle, María Victoria

    CONTENT: Surfing may be one of the most complex motor tasks to learn. Knowing this, we will take you on a journey through Europe to discover the latest findings about motor learning and performance. We will start in The Netherlands where you will learn the fundamental principles of motor learning

  18. Vadose Zone Transport Field Study: Summary Report

    SciTech Connect (OSTI)

    Ward, Andy L.; Conrad, Mark E.; Daily, William D.; Fink, James B.; Freedman, Vicky L.; Gee, Glendon W.; Hoversten, Gary M.; Keller, Jason M.; Majer, Ernest L.; Murray, Christopher J.; White, Mark D.; Yabusaki, Steven B.; Zhang, Z. F.

    2006-07-31T23:59:59.000Z

    From FY 2000 through FY 2003, a series of vadose zone transport field experiments were conducted as part of the U.S. Department of Energy’s Groundwater/Vadose Zone Integration Project Science and Technology Project, now known as the Remediation and Closure Science Project, and managed by the Pacific Northwest National Laboratory (PNNL). The series of experiments included two major field campaigns, one at a 299-E24-11 injection test site near PUREX and a second at a clastic dike site off Army Loop Road. The goals of these experiments were to improve our understanding of vadose zone transport processes; to develop data sets to validate and calibrate vadose zone flow and transport models; and to identify advanced monitoring techniques useful for evaluating flow-and-transport mechanisms and delineating contaminant plumes in the vadose zone at the Hanford Site. This report summarizes the key findings from the field studies and demonstrates how data collected from these studies are being used to improve conceptual models and develop numerical models of flow and transport in Hanford’s vadose zone. Results of these tests have led to a better understanding of the vadose zone. Fine-scale geologic heterogeneities, including grain fabric and lamination, were observed to have a strong effect on the large-scale behavior of contaminant plumes, primarily through increased lateral spreading resulting from anisotropy. Conceptual models have been updated to include lateral spreading and numerical models of unsaturated flow and transport have revised accordingly. A new robust model based on the concept of a connectivity tensor was developed to describe saturation-dependent anisotropy in strongly heterogeneous soils and has been incorporated into PNNL’s Subsurface Transport Over Multiple Phases (STOMP) simulator. Application to field-scale transport problems have led to a better understanding plume behavior at a number of sites where lateral spreading may have dominated waste migration (e.g. BC Cribs and Trenches). The improved models have been also coupled with inverse models and newly-developed parameter scaling techniques to allow estimation of field-scale and effective transport parameters for the vadose zone. The development and utility of pedotransfer functions for describing fine-scale hydrogeochemical heterogeneity and for incorporating this heterogeneity into reactive transport models was explored. An approach based on grain-size statistics appears feasible and has been used to describe heterogeneity in hydraulic properties and sorption properties, such as the cation exchange capacity and the specific surface area of Hanford sediments. This work has also led to the development of inverse modeling capabilities for time-dependent, subsurface, reactive transport with transient flow fields using an automated optimization algorithm. In addition, a number of geophysical techniques investigated for their potential to provide detailed information on the subtle changes in lithology and bedding surfaces; plume delineation, leak detection. High-resolution resistivity is now being used for detecting saline plumes at several waste sites at Hanford, including tank farms. Results from the field studies and associated analysis have appeared in more than 46 publications generated over the past 4 years. These publications include test plans and status reports, in addition to numerous technical notes and peer reviewed papers.

  19. HYPERCRITICAL ACCRETION ONTO A NEWBORN NEUTRON STAR AND MAGNETIC FIELD SUBMERGENCE

    SciTech Connect (OSTI)

    Bernal, Cristian G.; Page, Dany; Lee, William H., E-mail: bernalcg@astro.unam.mx, E-mail: page@astro.unam.mx, E-mail: wlee@astro.unam.mx [Departamento de Astrofisica Teorica, Instituto de Astronomia, Universidad Nacional Autonoma de Mexico, Mexico, D.F. 04510 (Mexico)

    2013-06-20T23:59:59.000Z

    We present magnetohydrodynamic numerical simulations of the late post-supernova hypercritical accretion to understand its effect on the magnetic field of the newborn neutron star. We consider as an example the case of a magnetic field loop protruding from the star's surface. The accreting matter is assumed to be non-magnetized, and, due to the high accretion rate, matter pressure dominates over magnetic pressure. We find that an accretion envelope develops very rapidly, and once it becomes convectively stable, the magnetic field is easily buried and pushed into the newly forming neutron star crust. However, for low enough accretion rates the accretion envelope remains convective for an extended period of time and only partial submergence of the magnetic field occurs due to a residual field that is maintained at the interface between the forming crust and the convective envelope. In this latter case, the outcome should be a weakly magnetized neutron star with a likely complicated field geometry. In our simulations we find the transition from total to partial submergence to occur around M-dot {approx}10 M{sub sun} yr{sup -1}. Back-diffusion of the submerged magnetic field toward the surface, and the resulting growth of the dipolar component, may result in a delayed switch-on of a pulsar on timescales of centuries to millennia.

  20. Radiation Field on Superspace

    E-Print Network [OSTI]

    P. F. Gonzalez-Diaz

    1994-03-18T23:59:59.000Z

    We study the dynamics of multiwormhole configurations within the framework of the Euclidean Polyakov approach to string theory, incorporating a modification to the Hamiltonian which makes it impossible to interpret the Coleman Alpha parameters of the effective interactions as a quantum field on superspace, reducible to an infinite tower of fields on space-time. We obtain a Planckian probability measure for the Alphas that allows $\\frac{1}{2}\\alpha^{2}$ to be interpreted as the energy of the quanta of a radiation field on superspace whose values may still fix the coupling constants.

  1. Magnetic Field Measurement System

    SciTech Connect (OSTI)

    Kulesza, Joe; Johnson, Eric; Lyndaker, Aaron; Deyhim, Alex; Waterman, Dave; Blomqvist, K. Ingvar [Advanced Design Consulting USA, 126 Ridge Road, P.O. Box 187, Lansing, NY 14882 (United States); Dunn, Jonathan Hunter [MAX-lab, SE-221 00 Lund (Sweden)

    2007-01-19T23:59:59.000Z

    A magnetic field measurement system was designed, built and installed at MAX Lab, Sweden for the purpose of characterizing the magnetic field produced by Insertion Devices (see Figure 1). The measurement system consists of a large granite beam roughly 2 feet square and 14 feet long that has been polished beyond laboratory grade for flatness and straightness. The granite precision coupled with the design of the carriage yielded minimum position deviations as measured at the probe tip. The Hall probe data collection and compensation technique allows exceptional resolution and range while taking data on the fly to programmable sample spacing. Additional flip coil provides field integral data.

  2. field_equipment.indd

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

    FIELD EQUIPMENT INVENTORY Trucks * Five vacpressure trucks, 60-90 bbl, up to 5 bpm at 5,000 lb. * Waterfi re truck, 110 bbl * Two dump trucks: 5-yard and 12-yard * Belly dump...

  3. Manager, Carlsbad Field Office

    Broader source: Energy.gov [DOE]

    The U.S. Department of Energy (DOE), Office of Environmental Management (EM), Carlsbad Field Office (CBFO) is seeking a highly experienced and motivated executive-minded individual to fill its...

  4. Three Field Theory

    E-Print Network [OSTI]

    viii Contents. Three Field Theory. 87—89. 90—95. 96—97. 98—107. 108—114. 115—121. De?nition and examples of ?eld structure 67. Vector spaces, bases ...

  5. Tennessee gas field brings Eastern Overthrust new life

    SciTech Connect (OSTI)

    Petzet, G.A.

    1996-09-02T23:59:59.000Z

    The Eastern US Overthrust Belt has gained an E and P company in its southern reaches while seeing de-emphasis from a long time player in more northerly areas. A gas field discovered in the early 1980s in northeastern Tennessee is nearly ready to be placed on production. It would be the first commercial gas production in the southern portion of the belt, which extends more than 1,000 miles from Alabama to New England. Tengasco has five wells capable of producing gas from Cambro-Ordovician Knox in Swan Creek field, southwest of Sneedville in Hancock County, Tenn., about 10 miles south of Lee County, Va. It hopes to drill five more wells by year-end. It began laying a 30--35 MMcfd, 23 mile, 6 in. gas pipeline to Rogersville, Tenn., early last month. Torch Inc., Belle Chasse, La., has the contract. Tengasco plans to start production later this year. Initially a gas utility in neighboring Hawkins County will take 8--9 MMcfd and transport any excess gas to Tenneco Energy affiliate East Tennessee Natural Gas Co. The primary production to date in Swan Creek field has been in a 300 ft section some 400--450 ft from the top of Knox. No water has been found.

  6. Development of Sockeye field in offshore California - A case history

    SciTech Connect (OSTI)

    Sankur, V. (Chevron, USA, Inc., La Habra, CA (United States))

    1991-02-01T23:59:59.000Z

    Sockeye field, discovered in 1970, lies offshore California in the Santa Barbara Channel. The decision to develop the field was made in 1983 based on 1979-1983 exploration drilling. Platform Gail was installed in 1987 and development drilling commenced in June 1988. Currently, there are eleven single completions. The field produces from five reservoirs: middle and upper Sespe Sands, lower and upper Topanga Sands, and the Monterey Formation. Sespe Sands are fluvial channel deposits with individual sand bodies with limited areal extents. The middle Sespe produces dry sweet gas and the upper Sespe produces sweet 29{degree} API gravity oil. The Topanga Sands were deposited in a near shore environment and are more continuous in nature. Lower Topanga Sands contain sweet oil whereas upper Topanga Sands test a low gravity 18{degree} API sour oil. The Monterey Formation is composed of thin beds of chert, porcellanites, siliceous shales, mudstones, and dolostones. The fractured Lower monterey produces heavy sour oil, similar to that of the upper Topanga. To minimize risk, delineation wells were drilled early in the development program to ensure that reserves warranted additional investment in wells and facilities. Nine wells were completed during the first phase of the drilling program. Gas production from these wells was projected to exceed the capacity of the Carpinteria gas modifications to handle production. At the conclusion of the evaluation, drilling was resumed with plans to drill four more wells.

  7. HTP over Function Fields HTP over Function Fields

    E-Print Network [OSTI]

    Shlapentokh, Alexandra

    HTP over Function Fields HTP over Function Fields Alexandra Shlapentokh East Carolina University AMS-ASL-MAA Panel on Hilberts Tenth Problem San Francisco January 14, 2010 #12;HTP over Function's known about HTP over Function Fields. Field Results for Characteristic 0 Field Results for Positive

  8. Quasi light fields: extending the light field to coherent radiation

    E-Print Network [OSTI]

    Wornell, Gregory W.

    Quasi light fields: extending the light field to coherent radiation Anthony Accardi1,2 and Gregory light field, and for coherent radiation using electromagnetic field theory. We present a model of coherent image formation that strikes a balance between the utility of the light field

  9. A PILOT FOR A VERY LARGE ARRAY H I DEEP FIELD

    SciTech Connect (OSTI)

    Fernandez, Ximena; Van Gorkom, J. H.; Schiminovich, David [Department of Astronomy, Columbia University, New York, NY 10027 (United States); Hess, Kelley M. [Department of Astronomy, Astrophysics, Cosmology and Gravity Centre, University of Cape Town, Private Bag X3, Rondebosch 7701 (South Africa); Pisano, D. J. [Department of Physics, West Virginia University, P.O. Box 6315, Morgantown, WV 26506 (United States); Kreckel, Kathryn [Max Planck Institute for Astronomy, Koenigstuhl 17, D-69117 Heidelberg (Germany); Momjian, Emmanuel [National Radio Astronomy Observatory, Socorro, NM 87801 (United States); Popping, Attila [International Centre for Radio Astronomy Research (ICRAR), The University of Western Australia, 35 Stirling Hwy, Crawley, WA 6009 (Australia); Oosterloo, Tom [Netherlands Institute for Radio Astronomy (ASTRON), Postbus 2, NL-7990 AA Dwingeloo (Netherlands); Chomiuk, Laura [Department of Physics and Astronomy, Michigan State University, East Lansing, MI 48824 (United States); Verheijen, M. A. W. [Kapteyn Astronomical Institute, University of Groningen, Postbus 800, NL-9700 AV Groningen (Netherlands); Henning, Patricia A. [Department of Physics and Astronomy, University of New Mexico, Albuquerque, NM 87131 (United States); Bershady, Matthew A.; Wilcots, Eric M. [Department of Astronomy, University of Wisconsin-Madison, Madison, WI 53706 (United States); Scoville, Nick, E-mail: ximena@astro.columbia.edu [Department of Astronomy, California Institute of Technology, Pasadena, CA 91125 (United States)

    2013-06-20T23:59:59.000Z

    High-resolution 21 cm H I deep fields provide spatially and kinematically resolved images of neutral hydrogen at different redshifts, which are key to understanding galaxy evolution across cosmic time and testing predictions of cosmological simulations. Here we present results from a pilot for an H I deep field done with the Karl G. Jansky Very Large Array (VLA). We take advantage of the newly expanded capabilities of the telescope to probe the redshift interval 0 < z < 0.193 in one observation. We observe the COSMOS field for 50 hr, which contains 413 galaxies with optical spectroscopic redshifts in the imaged field of 34' Multiplication-Sign 34' and the observed redshift interval. We have detected neutral hydrogen gas in 33 galaxies in different environments spanning the probed redshift range, including three without a previously known spectroscopic redshift. The detections have a range of H I and stellar masses, indicating the diversity of galaxies we are probing. We discuss the observations, data reduction, results, and highlight interesting detections. We find that the VLA's B-array is the ideal configuration for H I deep fields since its long spacings mitigate radio frequency interference. This pilot shows that the VLA is ready to carry out such a survey, and serves as a test for future H I deep fields planned with other Square Kilometer Array pathfinders.

  10. Cs{sub 4}P{sub 2}Se{sub 10}: A new compound discovered with the application of solid-state and high temperature NMR

    SciTech Connect (OSTI)

    Gave, Matthew A.; Canlas, Christian G. [Department of Chemistry, Michigan State University, East Lansing, MI 48824 (United States); Chung, In [Department of Chemistry, Michigan State University, East Lansing, MI 48824 (United States); Department of Chemistry, Northwestern University, Evanston, IL 60208 (United States); Iyer, Ratnasabapathy G. [Department of Chemistry, Michigan State University, East Lansing, MI 48824 (United States); Kanatzidis, Mercouri G. [Department of Chemistry, Michigan State University, East Lansing, MI 48824 (United States); Department of Chemistry, Northwestern University, Evanston, IL 60208 (United States)], E-mail: m-kanatzidis@northwestern.edu; Weliky, David P. [Department of Chemistry, Michigan State University, East Lansing, MI 48824 (United States)], E-mail: weliky@chemistry.msu.edu

    2007-10-15T23:59:59.000Z

    The new compound Cs{sub 4}P{sub 2}Se{sub 10} was serendipitously produced in high purity during a high-temperature synthesis done in a nuclear magnetic resonance (NMR) spectrometer. {sup 31}P magic angle spinning (MAS) NMR of the products of the synthesis revealed that the dominant phosphorus-containing product had a chemical shift of -52.8 ppm that could not be assigned to any known compound. Deep reddish brown well-formed plate-like crystals were isolated from the NMR reaction ampoule and the structure was solved with X-ray diffraction. Cs{sub 4}P{sub 2}Se{sub 10} has the triclinic space group P-1 with a=7.3587(11) A, b=7.4546(11) A, c=10.1420(15) A, {alpha}=85.938(2){sup o}, {beta}=88.055(2){sup o}, and {gamma}=85.609(2){sup o} and contains the [P{sub 2}Se{sub 10}]{sup 4-} anion. To our knowledge, this is the first compound containing this anion that is composed of two tetrahedral (PSe{sub 4}) units connected by a diselenide linkage. It was also possible to form a glass by quenching the melt in ice water, and Cs{sub 4}P{sub 2}Se{sub 10} was recovered upon annealing. The static {sup 31}P NMR spectrum at 350 deg. C contained a single peak with a -35 ppm chemical shift and a {approx}7 ppm peak width. This study highlights the potential of solid-state and high-temperature NMR for aiding discovery of new compounds and for probing the species that exist at high temperature. - Graphical abstract: The new compound Cs{sub 4}P{sub 2}Se{sub 10} was discovered following a high-temperature in situ synthesis in the NMR spectrometer and the structure was determined by single-crystal X-ray diffraction. It contains the new [P{sub 2}Se{sub 10}]{sup 4-} anion.

  11. Field error lottery

    SciTech Connect (OSTI)

    Elliott, C.J.; McVey, B. (Los Alamos National Lab., NM (USA)); Quimby, D.C. (Spectra Technology, Inc., Bellevue, WA (USA))

    1990-01-01T23:59:59.000Z

    The level of field errors in an FEL is an important determinant of its performance. We have computed 3D performance of a large laser subsystem subjected to field errors of various types. These calculations have been guided by simple models such as SWOOP. The technique of choice is utilization of the FELEX free electron laser code that now possesses extensive engineering capabilities. Modeling includes the ability to establish tolerances of various types: fast and slow scale field bowing, field error level, beam position monitor error level, gap errors, defocusing errors, energy slew, displacement and pointing errors. Many effects of these errors on relative gain and relative power extraction are displayed and are the essential elements of determining an error budget. The random errors also depend on the particular random number seed used in the calculation. The simultaneous display of the performance versus error level of cases with multiple seeds illustrates the variations attributable to stochasticity of this model. All these errors are evaluated numerically for comprehensive engineering of the system. In particular, gap errors are found to place requirements beyond mechanical tolerances of {plus minus}25{mu}m, and amelioration of these may occur by a procedure utilizing direct measurement of the magnetic fields at assembly time. 4 refs., 12 figs.

  12. Field Mapping At San Francisco Volcanic Field Area (Warpinski...

    Open Energy Info (EERE)

    Field Area Exploration Technique Field Mapping Activity Date Usefulness not indicated DOE-funding Unknown Notes Northern Arizona University has re-assessed the existing exploration...

  13. Vega field and potential of Ragusa basin, Offshore Sicily

    SciTech Connect (OSTI)

    Schramm, M. Jr.; Livraga, G.

    1984-09-01T23:59:59.000Z

    Vega, the largest single oil field in the Mediterranean Sea, is located between the southeastern coast of Sicily and the Island of Malta. The field lies entirely in Italian waters. Its discovery in October 1980 was based on interpretation of a very poor-quality seismic survey which, nevertheless, roughly outlined a relatively small structure. A limestone and dolomite fractured reservoir of the Inici, or Siracusa Formation, of Late Jurasic age, may contain in excess of 1 billion bbl of heavy crude (15.5 API) within a productive area of approximately 10,000 acres (4000 ha.). Reservoir properties are excellent, with permeabilities in darcys. The field extends northwest-southeast for 8.5 mi (14 km) and averages 1.7 mi (3 km) in width, according to the 3D seismic survey (2000 km) shot soon after the discovery well was drilled. The gross oil column reaches approximately 820 ft (250 m). The southeasternmost part of the Vega structure is not yet completely defined, and an additional 3D seismic survey is in progress. Should the new seismic results confirm expectations, the Vega structure could extend over 10 mi (17 km). The overlying Inici reservoir consists of dolomite and underlain by limestone in the southwestern part of the basin, and entirely of limestone in the northwestern portion of the basin. The Inici Formation represents the platform facies of the open-sea Villagonia and Giardini sediments. The Cammarata-Pozzillo (discovered in 1959), Perla (1979), Vega (1980), and Prezioso (1983) heavy crude oil fields are related to this formation. The potential for discovery of other fields similar to Vega in the Ragusa basin is excellent.

  14. STATISTICAL MECHANICS AND FIELD THEORY

    E-Print Network [OSTI]

    Samuel, S.A.

    2010-01-01T23:59:59.000Z

    York. K. Bardakci, Field Theory for Solitons, II, BerkeleyFart I Applications of Field Theory Methods to StatisticalStatistical Mechanics to Field Theory Chapter IV The Grand

  15. Pulsed hybrid field emitter

    DOE Patents [OSTI]

    Sampayan, Stephen E. (Manteca, CA)

    1998-01-01T23:59:59.000Z

    A hybrid emitter exploits the electric field created by a rapidly depoled ferroelectric material. Combining the emission properties of a planar thin film diamond emitter with a ferroelectric alleviates the present technological problems associated with both types of emitters and provides a robust, extremely long life, high current density cathode of the type required by emerging microwave power generation, accelerator technology and display applications. This new hybrid emitter is easy to fabricate and not susceptible to the same failures which plague microstructure field emitter technology. Local electrode geometries and electric field are determined independently from those for optimum transport and brightness preservation. Due to the large amount of surface charge created on the ferroelectric, the emitted electrons have significant energy, thus eliminating the requirement for specialized phosphors in emissive flat-panel displays.

  16. Pulsed hybrid field emitter

    DOE Patents [OSTI]

    Sampayan, S.E.

    1998-03-03T23:59:59.000Z

    A hybrid emitter exploits the electric field created by a rapidly depoled ferroelectric material. Combining the emission properties of a planar thin film diamond emitter with a ferroelectric alleviates the present technological problems associated with both types of emitters and provides a robust, extremely long life, high current density cathode of the type required by emerging microwave power generation, accelerator technology and display applications. This new hybrid emitter is easy to fabricate and not susceptible to the same failures which plague microstructure field emitter technology. Local electrode geometries and electric field are determined independently from those for optimum transport and brightness preservation. Due to the large amount of surface charge created on the ferroelectric, the emitted electrons have significant energy, thus eliminating the requirement for specialized phosphors in emissive flat-panel displays. 11 figs.

  17. Anomalies for Galilean fields

    E-Print Network [OSTI]

    Kristan Jensen

    2014-12-24T23:59:59.000Z

    We initiate a systematic study of `t Hooft anomalies in Galilean field theories, focusing on two questions therein. In the first, we consider the non-relativistic theories obtained from a discrete light-cone quantization (DLCQ) of a relativistic theory with flavor or gravitational anomalies. We find that these anomalies survive the DLCQ, becoming mixed flavor/boost or gravitational/boost anomalies. We also classify the pure Weyl anomalies of Schr\\"odinger theories, which are Galilean conformal field theories (CFTs) with $z=2$. There are no pure Weyl anomalies in even spacetime dimension, and the lowest-derivative anomalies in odd dimension are in one-to-one correspondence with those of a relativistic CFT in one dimension higher. These results classify many of the anomalies that arise in the field theories dual to string theory on Schr\\"odinger spacetimes.

  18. Microbial field pilot study

    SciTech Connect (OSTI)

    Knapp, R.M.; McInerney, M.J.; Menzie, D.E.; Coates, J.D.; Chisholm, J.L.

    1993-05-01T23:59:59.000Z

    A multi-well microbially enhanced oil recovery field pilot has been performed in the Southeast Vassar Vertz Sand Unit in Payne County, Oklahoma. The primary emphasis of the experiment was preferential plugging of high permeability zones for the purpose of improving waterflood sweep efficiency. Studies were performed to determine reservoir chemistry, ecology, and indigenous bacteria populations. Growth experiments were used to select a nutrient system compatible with the reservoir that encouraged growth of a group of indigenous nitrate-using bacteria and inhibit growth of sulfate-reducing bacteria. A specific field pilot area behind an active line drive waterflood was selected. Surface facilities were designed and installed. Injection protocols of bulk nutrient materials were prepared to facilitate uniform distribution of nutrients within the pilot area. By the end of December, 1991, 82.5 tons (75.0 tonnes) of nutrients had been injected in the field. A tracer test identified significant heterogeneity in the SEVVSU and made it necessary to monitor additional production wells in the field. The tracer tests and changes in production behavior indicate the additional production wells monitored during the field trial were also affected. Eighty two and one half barrels (13.1 m[sup 3]) of tertiary oil have been recovered. Microbial activity has increased CO[sub 2] content as indicated by increased alkalinity. A temporary rise in sulfide concentration was experienced. These indicate an active microbial community was generated in the field by the nutrient injection. Pilot area interwell pressure interference test results showed that significant permeability reduction occurred. The interwell permeabilities in the pilot area between the injector and the three pilot production wells were made more uniform which indicates a successful preferential plugging enhanced oil recovery project.

  19. Microbial field pilot study

    SciTech Connect (OSTI)

    Chisholm, J.L.

    1992-01-01T23:59:59.000Z

    Studies were performed enhanced oil recovery field pilot was performed in Southeast Vassar Vertz Sand Unit (SEVVSU) in Payne County, Oklahoma. The primary emphasis of the experiment was preferential plugging of high permeability zones for the purpose of improving waterflood sweep efficiency. Studies were performed to determine reservoir chemistry, ecology, and indigenous bacteria populations. Studies were performed to determine a nutrient system to encourage growth of a group of indigenous nitrate-using bacteria an inhibit growth of sulfate-reducing bacteria. A specific field pilot area behind an active line drive waterflood was selected. Surface facilities were designed and installed. Injection protocols of bulk nutrient material were prepared to facilitate uniform distribution of nutrients within the pilot area. By the end of December, 1991, 82.5 tons of nutrients had been injected in the field. A tracer test identified significant heterogeneity in the SEVVSU and made it necessary to monitor an additional production well in the field. The tracer tests and changes in production behavior indicated the additional production well monitored during the field trial was also affected. Eighty two and one half barrels of tertiary oil was recovered. Microbial activity increased CO[sub 2] content as indicated by increased alkalinity. A temporary rise in sulphide concentration was experienced. These observations indicate that an active microbial community was generated in the field by the nutrient injection. The three production wells monitored in the pilot area demonstrated significant permeability reduction indicated by interwell pressure interference tests. The interwell permeabilities in the pilot area between the injector and the three pilot production wells were made more uniform (15 md maximum difference between post-treatment permeability values) indicating that preferential plugging had occurred.

  20. Microbial field pilot study

    SciTech Connect (OSTI)

    Knapp, R.M.; McInerney, M.J.; Menzie, D.E.

    1991-12-06T23:59:59.000Z

    The objective of this project is to perform a microbial enhanced oil recovery field pilot test in the Southeast Vassar Vertz Sand Unit (SEVVSU) in Payne County, Oklahoma. Indigenous, anaerobic, nitrate-reducing bacteria will be stimulated to selectively plug flow paths which have been preferentially swept by a prior waterflood. This will force future flood water to invade bypassed regions of the reservoir and increase sweep efficiency. During this quarter an additional tracer study was performed in the field to determine pre-treatment flow paths and the first nutrients were injected. 2 figs.

  1. Noncommutative Quantum Field Theories

    E-Print Network [OSTI]

    H. O. Girotti

    2003-03-19T23:59:59.000Z

    We start by reviewing the formulation of noncommutative quantum mechanics as a constrained system. Then, we address to the problem of field theories defined on a noncommutative space-time manifold. The Moyal product is introduced and the appearance of the UV/IR mechanism is exemplified. The emphasis is on finding and analyzing noncommutative quantum field theories which are renormalizable and free of nonintegrable infrared singularities. In this last connection we give a detailed discussion of the quantization of the noncommutative Wess-Zumino model as well as of its low energy behavior.

  2. Experimental quantum field theory

    E-Print Network [OSTI]

    Bell, J S

    1977-01-01T23:59:59.000Z

    Presented here, is, in the opinion of the author, the essential minimum of quantum field theory that should be known to cultivated experimental particle physicists. The word experimental describes not only the audience aimed at but also the level of mathematical rigour aspired to. (0 refs).

  3. Matthew Knight Hammer Field

    E-Print Network [OSTI]

    Oregon, University of

    MILLER THEATRE COMPLEX Beall Concert Outdoor Program Barn MRI Bean East Bean West Riverfront Fields Mc Military Science Moss Street Children's Center Knight Law Museum of Natural and Cultural History Bean East Innovation Center Rainier Romania Warehouse Chilled Water Plant Alder PeaceHealth University District

  4. Matthew Knight Hammer Field

    E-Print Network [OSTI]

    Oregon, University of

    Outdoor Program Barn MRI Bean East Bean West Riverfront Fields McClure Morton Sheldon Stafford Young Law Museum of Natural and Cultural History Bean East Campus Graduate Village Ford Alumni Center Chilled Water Plant Alder PeaceHealth University District Northwest Christian University Pioneer Cemetery

  5. Single-field $?$-attractors

    E-Print Network [OSTI]

    Andrei Linde

    2015-04-02T23:59:59.000Z

    I describe a simple class of $\\alpha$-attractors, generalizing the single-field GL model of inflation in supergravity. The new class of models is defined for $0<\\alpha \\lesssim 1$, providing a good match to the present cosmological data. I also present a generalized version of these models which can describe not only inflation but also dark energy and supersymmetry breaking.

  6. Algebraic Quantum Field Theory

    E-Print Network [OSTI]

    Hans Halvorson; Michael Mueger

    2006-02-14T23:59:59.000Z

    Algebraic quantum field theory provides a general, mathematically precise description of the structure of quantum field theories, and then draws out consequences of this structure by means of various mathematical tools -- the theory of operator algebras, category theory, etc.. Given the rigor and generality of AQFT, it is a particularly apt tool for studying the foundations of QFT. This paper is a survey of AQFT, with an orientation towards foundational topics. In addition to covering the basics of the theory, we discuss issues related to nonlocality, the particle concept, the field concept, and inequivalent representations. We also provide a detailed account of the analysis of superselection rules by S. Doplicher, R. Haag, and J. E. Roberts (DHR); and we give an alternative proof of Doplicher and Roberts' reconstruction of fields and gauge group from the category of physical representations of the observable algebra. The latter is based on unpublished ideas due to Roberts and the abstract duality theorem for symmetric tensor *-categories, a self-contained proof of which is given in the appendix.

  7. Field/source duality in topological field theories

    E-Print Network [OSTI]

    David Delphenich

    2007-02-13T23:59:59.000Z

    The relationship between the sources of physical fields and the fields themselves is investigated with regard to the coupling of topological information between them. A class of field theories that we call topological field theories is defined such that both the field and its source represent de Rham cocycles in varying dimensions over complementary subspaces and the coupling of one to the other is by way of an isomorphism of the those cohomology spaces, which we refer to as field/source duality. The deeper basis for such an isomorphism is investigated and the process is described for various elementary physical examples of topological field theories.

  8. HOFSTRA UNIVERSITY FIELD TRIP GUIDEBOOK

    E-Print Network [OSTI]

    Merguerian, Charles

    HOFSTRA UNIVERSITY FIELD TRIP GUIDEBOOK GEOLOGY 143A ­ Field Geology of Northern Arizona 27 March University Geology 143A Northern Arizona Field Course, 27 March ­ 03 April 2010 Field Trip Guidebook by: Prof. Charles Merguerian 2010 Arizona ­ a Macro View Physically, he was not what you would call an imposing

  9. Deep ATLAS radio observations of the CDFS-SWIRE field

    E-Print Network [OSTI]

    Ray P. Norris; Jose Afonso; Phil N. Appleton; Brian J. Boyle; Paolo Ciliegi; Scott M. Croom; Minh T. Huynh; Carole A. Jackson; Anton M. Koekemoer; Carol J. Lonsdale; Enno Middelberg; Bahram Mobasher; Seb J. Oliver; Mari Polletta; Brian D. Siana; Ian Smail; Maxim A. Voronkov

    2006-10-18T23:59:59.000Z

    We present the first results from the Australia Telescope Large Area Survey (ATLAS), which consist of deep radio observations of a 3.7 square degree field surrounding the Chandra Deep Field South, largely coincident with the infrared Spitzer Wide-Area Extragalactic (SWIRE) Survey. We also list cross-identifications to infrared and optical photometry data from SWIRE, and ground-based optical spectroscopy. A total of 784 radio components are identified, corresponding to 726 distinct radio sources, nearly all of which are identified with SWIRE sources. Of the radio sources with measured redshifts, most lie in the redshift range 0.5-2, and include both star-forming galaxies and active galactic nuclei (AGN). We identify a rare population of infrared-faint radio sources which are bright at radio wavelengths but are not seen in the available optical, infrared, or X-ray data. Such rare classes of sources can only be discovered in wide, deep surveys such as this.

  10. THE MAGNETIC FIELD IN TAURUS PROBED BY INFRARED POLARIZATION

    SciTech Connect (OSTI)

    Chapman, Nicholas L.; Goldsmith, Paul F.; Pineda, Jorge L.; Li Di [Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, MS 301-429, Pasadena, CA 91109 (United States); Clemens, D. P. [Institute for Astrophysical Research, Boston University, 725 Commonwealth Avenue, Boston, MA 02215 (United States); Krco, Marko, E-mail: nchapman@u.northwestern.edu [Department of Astronomy, Cornell University, Ithaca, NY 14853 (United States)

    2011-11-01T23:59:59.000Z

    We present maps of the plane-of-sky magnetic field within two regions of the Taurus molecular cloud: one in the dense core L1495/B213 filament and the other in a diffuse region to the west. The field is measured from the polarization of background starlight seen through the cloud. In total, we measured 287 high-quality near-infrared polarization vectors in these regions. In L1495/B213, the percent polarization increases with column density up to A{sub V} {approx} 9 mag, the limits of our data. The radiative torques model for grain alignment can explain this behavior, but models that invoke turbulence are inconsistent with the data. We also combine our data with published optical and near-infrared polarization measurements in Taurus. Using this large sample, we estimate the strength of the plane-of-sky component of the magnetic field in nine subregions. This estimation is done with two different techniques that use the observed dispersion in polarization angles. Our values range from 5 to 82 {mu}G and tend to be higher in denser regions. In all subregions, the critical index of the mass-to-magnetic flux ratio is sub-unity, implying that Taurus is magnetically supported on large scales ({approx}2 pc). Within the region observed, the B213 filament takes a sharp turn to the north and the direction of the magnetic field also takes a sharp turn, switching from being perpendicular to the filament to becoming parallel. This behavior can be understood if we are observing the rim of a bubble. We argue that it has resulted from a supernova remnant associated with a recently discovered nearby gamma-ray pulsar.

  11. Methane Hydrate Field Program

    SciTech Connect (OSTI)

    None

    2013-12-31T23:59:59.000Z

    This final report document summarizes the activities undertaken and the output from three primary deliverables generated during this project. This fifteen month effort comprised numerous key steps including the creation of an international methane hydrate science team, determining and reporting the current state of marine methane hydrate research, convening an international workshop to collect the ideas needed to write a comprehensive Marine Methane Hydrate Field Research Plan and the development and publication of that plan. The following documents represent the primary deliverables of this project and are discussed in summary level detail in this final report. • Historical Methane Hydrate Project Review Report • Methane Hydrate Workshop Report • Topical Report: Marine Methane Hydrate Field Research Plan • Final Scientific/Technical Report

  12. Graphene field emission devices

    SciTech Connect (OSTI)

    Kumar, S., E-mail: shishirk@gmail.com; Raghavan, S. [Centre for Nanoscience and Engineering, Indian Institute of Science, Bengaluru (India); Duesberg, G. S. [Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN) and School of Chemistry, Trinity College Dublin, Dublin, D2 (Ireland); Pratap, R. [Centre for Nanoscience and Engineering, Indian Institute of Science, Bengaluru (India); Department of Mechanical Engineering, Indian Institute of Science, Bengaluru (India)

    2014-09-08T23:59:59.000Z

    Graphene field emission devices are fabricated using a scalable process. The field enhancement factors, determined from the Fowler-Nordheim plots, are within few hundreds and match the theoretical predictions. The devices show high emission current density of ?10?nA ?m{sup ?1} at modest voltages of tens of volts. The emission is stable with time and repeatable over long term, whereas the noise in the emission current is comparable to that from individual carbon nanotubes emitting under similar conditions. We demonstrate a power law dependence of emission current on pressure which can be utilized for sensing. The excellent characteristics and relative ease of making the devices promise their great potential for sensing and electronic applications.

  13. No nearby counterparts to the moving objects in the Hubble Deep Field

    E-Print Network [OSTI]

    Chris Flynn; J. Sommer-Larsen; B. Fuchs; David S. Graff; Samir Salim; .

    1999-12-14T23:59:59.000Z

    Ibata et al (1999) have recently discovered faint, moving objects in the Hubble Deep Field. The quantity, magnitudes and proper motions of these objects are consistent with old white dwarfs making up the Galactic dark halo. We review a number of ground-based proper motion surveys in which nearby dark halo white dwarfs might be present, if they have the colours and absolute magnitudes proposed. No such objects have been found, whereas we argue here that several times more would be expected than in the Hubble Deep Field. We conclude it is unlikely that hydrogen atmosphere white dwarfs make up a significant fraction of the halo dark matter. No limits can be placed yet on helium atmosphere dwarfs from optical searches.

  14. Unbalanced field RF electron gun

    DOE Patents [OSTI]

    Hofler, Alicia

    2013-11-12T23:59:59.000Z

    A design for an RF electron gun having a gun cavity utilizing an unbalanced electric field arrangement. Essentially, the electric field in the first (partial) cell has higher field strength than the electric field in the second (full) cell of the electron gun. The accompanying method discloses the use of the unbalanced field arrangement in the operation of an RF electron gun in order to accelerate an electron beam.

  15. Microbial field pilot study

    SciTech Connect (OSTI)

    Knapp, R.M.; McInerney, M.J.; Menzie, D.E.; Chisholm, J.L.

    1992-03-01T23:59:59.000Z

    The objective of this project is to perform a microbial enhanced oil recovery field pilot in the Southeast Vassar Vertz Sand Unit (SEVVSU) in Payne County, Oklahoma. Indigenous, anaerobic, nitrate reducing bacteria will be stimulated to selectively plug flow paths which have been referentially swept by a prior waterflood. This will force future flood water to invade bypassed regions of the reservoir and increase sweep efficiency. This report covers progress made during the second year, January 1, 1990 to December 31, 1990, of the Microbial Field Pilot Study project. Information on reservoir ecology, surface facilities design, operation of the unit, core experiments, modeling of microbial processes, and reservoir characterization and simulation are presented in the report. To better understand the ecology of the target reservoir, additional analyses of the fluids which support bacteriological growth and the microbiology of the reservoir were performed. The results of the produced and injected water analysis show increasing sulfide concentrations with respect to time. In March of 1990 Mesa Limited Partnership sold their interest in the SEVVSU to Sullivan and Company. In April, Sullivan and Company assumed operation of the field. The facilities for the field operation of the pilot were refined and implementation was begun. Core flood experiments conducted during the last year were used to help define possible mechanisms involved in microbial enhanced oil recovery. The experiments were performed at SEVVSU temperature using fluids and inoculum from the unit. The model described in last year`s report was further validated using results from a core flood experiment. The model was able to simulate the results of one of the core flood experiments with good quality.

  16. Microbial field pilot study

    SciTech Connect (OSTI)

    Knapp, R.M.; McInerney, M.J.; Menzie, D.E.

    1991-01-01T23:59:59.000Z

    The objective of this project is to perform a microbially enhanced oil recovery field pilot test in the Southeast Vassar Vertz Sand Unit in Payne County, Oklahoma. Indigenous, anaerobic, nitrate-reducing bacteria will be stimulated to selectively plug flow paths which have been preferentially swept by a prior waterflood. This will force future flood water to invade bypassed regions of the reservoir and increase sweep efficiency. 1 fig., 2 tabs.

  17. Microbial field pilot study

    SciTech Connect (OSTI)

    Knapp, R.M.; McInerney, M.J.; Menzie, D.E.; Chisholm, J.L.

    1992-03-01T23:59:59.000Z

    The objective of this project is to perform a microbial enhanced oil recovery field pilot in the Southeast Vassar Vertz Sand Unit (SEVVSU) in Payne County, Oklahoma. Indigenous, anaerobic, nitrate reducing bacteria will be stimulated to selectively plug flow paths which have been referentially swept by a prior waterflood. This will force future flood water to invade bypassed regions of the reservoir and increase sweep efficiency. This report covers progress made during the second year, January 1, 1990 to December 31, 1990, of the Microbial Field Pilot Study project. Information on reservoir ecology, surface facilities design, operation of the unit, core experiments, modeling of microbial processes, and reservoir characterization and simulation are presented in the report. To better understand the ecology of the target reservoir, additional analyses of the fluids which support bacteriological growth and the microbiology of the reservoir were performed. The results of the produced and injected water analysis show increasing sulfide concentrations with respect to time. In March of 1990 Mesa Limited Partnership sold their interest in the SEVVSU to Sullivan and Company. In April, Sullivan and Company assumed operation of the field. The facilities for the field operation of the pilot were refined and implementation was begun. Core flood experiments conducted during the last year were used to help define possible mechanisms involved in microbial enhanced oil recovery. The experiments were performed at SEVVSU temperature using fluids and inoculum from the unit. The model described in last year's report was further validated using results from a core flood experiment. The model was able to simulate the results of one of the core flood experiments with good quality.

  18. An interdisciplinary approach to reservoir management: The Malu Field, West Niger Delta, Nigeria

    SciTech Connect (OSTI)

    Patterson, B.A.; Bluhm, C.T. [Chevron Overseas Petroleum, San Ramon, CA (United States); Adokpaye, E.U. [Chevron Nigeria Limited, Lekki (Nigeria)] [and others

    1995-08-01T23:59:59.000Z

    The Malu Field is 175 kilometers southeast of Lagos, offshore Nigeria. The field was discovered in 1967 and brought on stream in 1971. Peak production reached 31,300 barrels per day in 1972. Twenty-six wells have been drilled in the thirty-six square kilometer size field. In 1990 original-oil-in-place was estimated at 345 million barrels with cumulative production of 109 million barrels and an estimated 40 million barrels of remaining reserves. The Main Field review was initiated in 1994 to resolve structural and production inconsistencies and therefore improve reservoir performance. The tools used include reprocessed three-dimensional seismic, oil chemistry (primarily gas chromatography), and production data. The complexly faulted field is subdivided into seven different fault blocks. Growth faults generally trend northwest to southeast and are downthrown to the west. Twenty-five different hydrocarbon-bearing sands have been identified within the field. These sands are separated into sixty-three different reservoirs by the series of southeast trending growth faults. Most sands are laterally continuous within mapped fault blocks except in east Malu. Cross-fault communication of oils occurs among several of the shallow reservoirs in west Malu allowing wells to deplete unintended horizons. In addition, three of the dual string completions are producing oil only from only the upper sands. The integration of seismic, oil chemistry, and production data allows more efficient management of production by providing accurate structure maps, reserve estimates, drainage pathways, and justification for workovers and future development drilling.

  19. Polymer Parametrised Field Theory

    E-Print Network [OSTI]

    Alok Laddha; Madhavan Varadarajan

    2008-05-02T23:59:59.000Z

    Free scalar field theory on 2 dimensional flat spacetime, cast in diffeomorphism invariant guise by treating the inertial coordinates of the spacetime as dynamical variables, is quantized using LQG type `polymer' representations for the matter field and the inertial variables. The quantum constraints are solved via group averaging techniques and, analogous to the case of spatial geometry in LQG, the smooth (flat) spacetime geometry is replaced by a discrete quantum structure. An overcomplete set of Dirac observables, consisting of (a) (exponentials of) the standard free scalar field creation- annihilation modes and (b) canonical transformations corresponding to conformal isometries, are represented as operators on the physical Hilbert space. None of these constructions suffer from any of the `triangulation' dependent choices which arise in treatments of LQG. In contrast to the standard Fock quantization, the non- Fock nature of the representation ensures that the algebra of conformal isometries as well as that of spacetime diffeomorphisms are represented in an anomaly free manner. Semiclassical states can be analysed at the gauge invariant level. It is shown that `physical weaves' necessarily underly such states and that such states display semiclassicality with respect to, at most, a countable subset of the (uncountably large) set of observables of type (a). The model thus offers a fertile testing ground for proposed definitions of quantum dynamics as well as semiclassical states in LQG.

  20. Noncommutative Dipole Field Theories

    E-Print Network [OSTI]

    K. Dasgupta; M. M. Sheikh-Jabbari

    2002-02-05T23:59:59.000Z

    Assigning an intrinsic constant dipole moment to any field, we present a new kind of associative star product, the dipole star product, which was first introduced in [hep-th/0008030]. We develop the mathematics necessary to study the corresponding noncommutative dipole field theories. These theories are sensible non-local field theories with no IR/UV mixing. In addition we discuss that the Lorentz symmetry in these theories is ``softly'' broken and in some particular cases the CP (and even CPT) violation in these theories may become observable. We show that a non-trivial dipole extension of N=4, D=4 gauge theories can only be obtained if we break the SU(4) R (and hence super)-symmetry. Such noncommutative dipole extensions, which in the maximal supersymmetric cases are N=2 gauge theories with matter, can be embedded in string theory as the theories on D3-branes probing a smooth Taub-NUT space with three form fluxes turned on or alternatively by probing a space with R-symmetry twists. We show the equivalences between the two approaches and also discuss the M-theory realization.

  1. Progress in Understanding Error-field Physics in NSTX Spherical Torus Plasmas

    SciTech Connect (OSTI)

    E. Menard, R.E. Bell, D.A. Gates, S.P. Gerhardt, J.-K. Park, S.A. Sabbagh, J.W. Berkery, A. Egan, J. Kallman, S.M. Kaye, B. LeBlanc, Y.Q. Liu, A. Sontag, D. Swanson, H. Yuh, W. Zhu and the NSTX Research Team

    2010-05-19T23:59:59.000Z

    The low aspect ratio, low magnetic field, and wide range of plasma beta of NSTX plasmas provide new insight into the origins and effects of magnetic field errors. An extensive array of magnetic sensors has been used to analyze error fields, to measure error field amplification, and to detect resistive wall modes in real time. The measured normalized error-field threshold for the onset of locked modes shows a linear scaling with plasma density, a weak to inverse dependence on toroidal field, and a positive scaling with magnetic shear. These results extrapolate to a favorable error field threshold for ITER. For these low-beta locked-mode plasmas, perturbed equilibrium calculations find that the plasma response must be included to explain the empirically determined optimal correction of NSTX error fields. In high-beta NSTX plasmas exceeding the n=1 no-wall stability limit where the RWM is stabilized by plasma rotation, active suppression of n=1 amplified error fields and the correction of recently discovered intrinsic n=3 error fields have led to sustained high rotation and record durations free of low-frequency core MHD activity. For sustained rotational stabilization of the n=1 RWM, both the rotation threshold and magnitude of the amplification are important. At fixed normalized dissipation, kinetic damping models predict rotation thresholds for RWM stabilization to scale nearly linearly with particle orbit frequency. Studies for NSTX find that orbit frequencies computed in general geometry can deviate significantly from those computed in the high aspect ratio and circular plasma cross-section limit, and these differences can strongly influence the predicted RWM stability. The measured and predicted RWM stability is found to be very sensitive to the E × B rotation profile near the plasma edge, and the measured critical rotation for the RWM is approximately a factor of two higher than predicted by the MARS-F code using the semi-kinetic damping model.

  2. The Momotombo Geothermal Field, Nicaragua: Exploration and development case history study

    SciTech Connect (OSTI)

    None

    1982-07-01T23:59:59.000Z

    This case history discusses the exploration methods used at the Momotombo Geothermal Field in western Nicaragua, and evaluates their contributions to the development of the geothermal field models. Subsequent reservoir engineering has not been synthesized or evaluated. A geothermal exploration program was started in Nicaragua in 1966 to discover and delineate potential geothermal reservoirs in western Nicaragua. Exploration began at the Momotombo field in 1970 using geological, geochemical, and geophysical methods. A regional study of thermal manifestations was undertaken and the area on the southern flank of Volcan Momotombo was chosen for more detailed investigation. Subsequent exploration by various consultants produced a number of geotechnical reports on the geology, geophysics, and geochemistry of the field as well as describing production well drilling. Geological investigations at Momotombo included photogeology, field mapping, binocular microscope examination of cuttings, and drillhole correlations. Among the geophysical techniques used to investigate the field sub-structure were: Schlumberger and electromagnetic soundings, dipole mapping and audio-magnetotelluric surveys, gravity and magnetic measurements, frequency domain soundings, self-potential surveys, and subsurface temperature determinations. The geochemical program analyzed the thermal fluids of the surface and in the wells. This report presents the description and results of exploration methods used during the investigative stages of the Momotombo Geothermal Field. A conceptual model of the geothermal field was drawn from the information available at each exploration phase. The exploration methods have been evaluated with respect to their contributions to the understanding of the field and their utilization in planning further development. Our principal finding is that data developed at each stage were not sufficiently integrated to guide further work at the field, causing inefficient use of resources.

  3. Generalized Gravitational Entropy of Interacting Scalar Field and Maxwell Field

    E-Print Network [OSTI]

    Wung-Hong Huang

    2014-11-11T23:59:59.000Z

    The generalized gravitational entropy proposed by Lewkowycz and Maldacena in recent is extended to the interacting real scalar field and Maxwell field system. Using the BTZ geometry we first investigate the case of free real scalar field and then show a possible way to calculate the entropy of the interacting scalar field. Next, we investigate the Maxwell field system. We exactly solve the wave equation and calculate the analytic value of the generalized gravitational entropy. We also use the Einstein equation to find the effect of backreaction of the Maxwell field on the area of horizon. The associated modified area law is consistent with the generalized gravitational entropy.

  4. Hamiltonian Vector Fields on Multiphase Spaces of Classical Field Theory

    E-Print Network [OSTI]

    Michael Forger; Mário Otávio Salles

    2010-10-02T23:59:59.000Z

    We present a classification of hamiltonian vector fields on multisymplectic and polysymplectic fiber bundles closely analogous to the one known for the corresponding dual jet bundles that appear in the multisymplectic and polysymplectic approach to first order classical field theories.

  5. Quasi light fields: Extending the light field to coherent radiation

    E-Print Network [OSTI]

    Accardi, Anthony J.

    Imaging technologies such as dynamic viewpoint generation are engineered for incoherent radiation using the traditional light field, and for coherent radiation using electromagnetic field theory. We present a model of ...

  6. Microbial field pilot study

    SciTech Connect (OSTI)

    Knapp, R.M.; McInerney, M.J.; Menzie, D.E.; Chisholm, J.L.

    1990-05-02T23:59:59.000Z

    The objective of this project is to perform a microbially enhanced oil recovery field pilot test in the Southeast Vassar Vertz Sand Unit (SEVVSU) in Payne County, Oklahoma. Indigenous, anaerobic, nitrate-reducing bacteria will be stimulated to selectively plug flow paths which have been preferentially swept by a prior waterflood. This will force future flood water to invade bypassed regions of the reservoir and increase sweep efficiency. Results are reported on the isolation/characterization of anaerobic bacteria; bacterial mobility and the importance of chemotaxis; careflood experiments; microbial modeling; and surface facilities design. 7 figs., 1 tab.

  7. Microbial field pilot study

    SciTech Connect (OSTI)

    Knapp, R.M.; McInerney, M.J.; Menzie, D.E.; Chisholm, J.L.

    1990-05-01T23:59:59.000Z

    The objective of this project is to perform a microbially enhanced oil recovery field pilot test in the Southeast Vassar Vertz Sand Unit (SEVVSU) in Payne County, Oklahoma. Indigenous, anaerobic, nitrate-reducing bacteria will be stimulated to selectively plug flow paths which have been preferentially swept by a prior waterflood. This will force future flood water to invade bypassed regions of the reservoir and increase sweep efficiency. Progress is reported on growth/activity in porous media; coreflooding; and microbial modeling. 3 refs., 5 figs.

  8. ARM - Field Participants

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006Datastreamstwrcam40m DocumentationJanuary 9, 2009 [Events, Feature StoriesgovCampaignsSurface HeatField

  9. The Effective Field Theory

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOnItem Not FoundInformation DOEInformation Summary Big*The Effective Field Theory

  10. Field Office, Osk Ridge

    Office of Legacy Management (LM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilA groupTuba City, Arizona, DisposalFourthNrr-osams ADMIN551 - g 7 s % @ {rField ,_

  11. Particle decay in Ising field theory with magnetic field

    E-Print Network [OSTI]

    Gesualdo Delfino

    2007-03-30T23:59:59.000Z

    The scaling limit of the two-dimensional Ising model in the plane of temperature and magnetic field defines a field theory which provides the simplest illustration of non-trivial phenomena such as spontaneous symmetry breaking and confinement. Here we discuss how Ising field theory also gives the simplest model for particle decay. The decay widths computed in this theory provide the obvious test ground for the numerical methods designed to study unstable particles in quantum field theories discretized on a lattice.

  12. Formation of a long-lived hot field reversed configuration by dynamically merging two colliding high-{beta} compact toroids

    SciTech Connect (OSTI)

    Guo, H. Y.; Binderbauer, M. W.; Barnes, D.; Putvinski, S.; Rostoker, N.; Sevier, L.; Tuszewski, M.; Anderson, M. G.; Andow, R.; Bonelli, L.; Brown, R.; Bui, D. Q.; Bystritskii, V.; Clary, R.; Cheung, A. H.; Conroy, K. D.; Deng, B. H.; Dettrick, S. A.; Douglass, J. D.; Feng, P. [Tri Alpha Energy, Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688 (United States)

    2011-05-15T23:59:59.000Z

    A high temperature field reversed configuration (FRC) has been produced in the newly built, world's largest compact toroid (CT) facility, C-2, by colliding and merging two high-{beta} CTs produced using the advanced field-reversed {theta}-pinch technology. This long-lived, stable merged state exhibits the following key properties: (1) apparent increase in the poloidal flux from the first pass to the final merged state, (2) significantly improved confinement compared to conventional {theta}-pinch FRCs with flux decay rates approaching classical values in some cases, (3) strong conversion from kinetic energy into thermal energy with total temperature (T{sub e} + T{sub i}) exceeding 0.5 keV, predominantly into the ion channel. Detailed modeling using a new 2-D resistive magnetohydrodynamic (MHD) code, LamyRidge, has demonstrated, for the first time, the formation, translation, and merging/reconnection dynamics of such extremely high-{beta} plasmas.

  13. BOUNDLESSLEARNING EXPLORERS FIELD EDUCATION FUND

    E-Print Network [OSTI]

    Wells, Mathew G. - Department of Physical and Environmental Sciences, University of Toronto

    FOR FIELD EDUCATION The Department of Earth Sciences is expanding the field study components of our programs account. · Claim charitable donations up to 75 per cent of your net income (a five-year carry forward

  14. Exposure guidelines for magnetic fields

    SciTech Connect (OSTI)

    Miller, G.

    1987-12-01T23:59:59.000Z

    The powerful magnetic fields produced by a controlled fusion experiment at Lawrence Livermore National Laboratory (LLNL) necessitated the development of personnel-exposure guidelines for steady magnetic fields. A literature search and conversations with active researchers showed that it is currently possible to develop preliminary exposure guidelines for steady magnetic fields. An overview of the results of past research into the bioeffects of magnetic fields was compiled, along with a discussion of hazards that may be encountered by people with sickle-cell anemia or medical electronic and prosthetic implants. The LLNL steady magnetic-field exposure guidelines along with a review of developments concerning the safety of time-varying fields were also presented in this compilation. Guidelines developed elsewhere for time varying fields were also given. Further research is needed to develop exposure standards for both steady or time-varying fields.

  15. Fermions in spherical field theory

    E-Print Network [OSTI]

    Dean Lee

    1999-01-07T23:59:59.000Z

    We derive the spherical field formalism for fermions. We find that the spherical field method is free from certain difficulties which complicate lattice calculations, such as fermion doubling, missing axial anomalies, and computational problems regarding internal fermion loops.

  16. Direct drive field actuator motors

    DOE Patents [OSTI]

    Grahn, A.R.

    1998-03-10T23:59:59.000Z

    A positive-drive field actuator motor is described which includes a stator carrying at least one field actuator which changes in dimension responsive to application of an energy field, and at least one drive shoe movable by the dimensional changes of the field actuator to contact and move a rotor element with respect to the stator. Various embodiments of the motor are disclosed, and the rotor element may be moved linearly or arcuately. 62 figs.

  17. Diamond-graphite field emitters

    DOE Patents [OSTI]

    Valone, Steven M. (Santa Fe, NM)

    1997-01-01T23:59:59.000Z

    A field emission electron emitter comprising an electrode of diamond and a conductive carbon, e.g., graphite, is provided.

  18. Introduction to spherical field theory

    E-Print Network [OSTI]

    Dean Lee

    1998-11-12T23:59:59.000Z

    Spherical field theory is a new non-perturbative method for studying quantum field theories. It uses the spherical partial wave expansion to reduce a general d-dimensional Euclidean field theory into a set of coupled one-dimensional systems. The coupled one-dimensional systems are then converted to partial differential equations and solved numerically. We demonstrate the methods of spherical field theory by analyzing Euclidean phi^4 theory in two dimensions.

  19. Field Theory and Standard Model

    E-Print Network [OSTI]

    W. Buchmüller; C. Lüdeling

    2006-09-18T23:59:59.000Z

    This is a short introduction to the Standard Model and the underlying concepts of quantum field theory.

  20. Change of Paradigm for the Reversed Field Pinch

    SciTech Connect (OSTI)

    Escande, D. F. [Physique des Interactions Ioniques et Moleculaires, UMR 6633-CNRS / Aix-Marseille Universite, Case 321, Av. Normandie Niemen, 13397 MARSEILLE Cedex 20 (France)

    2010-11-23T23:59:59.000Z

    The reversed field pinch (RFP) is a magnetic configuration germane to the tokamak, but it produces most of its magnetic field by the currents flowing inside the plasma; external coils provide only a small edge toroidal field whose sign is reversed with respect to the central one, whence the name of the configuration. Because of the presence of magnetic turbulence and chaos, the RFP had been considered for a long period as a terrible confinement configuration. However, recently a change of paradigm occurred for this device. Indeed, when the toroidal current is increased in the RFX-mod RFP in Padua (Italy), a self-organized helical state with an internal transport barrier (ITB) develops, and a broad zone of the plasma becomes hot (above 1 keV for a magnetic field above 0.8 T). The present theoretical picture of the RFP mainly comes from three-dimensional nonlinear visco-resistive MHD simulations whose dynamics has strong similarities with the experimental one, and triggered the experimental search for RFP states with improved confinement. The RFP ohmic state involves a helical electrostatic potential generating, as an electric drift, the so-called dynamo velocity field. The magnetic topology can bifurcate from a magnetic island to kink-like magnetic surfaces with higher resilience to magnetic chaos. This theoretical scenario was found to be relevant when ITB's enclosing a broad hot domain were discovered. The ITBs occur in the vicinity of the maximum of the safety factor. The new paradigm for the RFP supports its reappraisal as a low-external field, non-disruptive, ohmically heated approach to magnetic fusion, exploiting both self-organization and technological simplicity. Furthermore the RFP has the same Greenwald density limit as the tokamak, and it is an excellent test bed for the efficient control of multiple resistive wall modes. Its helical magnetic structure makes it germane to the stellarator too. As a result the RFP is also useful to bring support to the present two main lines of magnetic confinement.

  1. Field Museum of Natural History

    E-Print Network [OSTI]

    Patterson, Bruce D.

    Field Museum of Natural History Financial Statements as of and for the Years Ended December 31' Report #12;FIELD MUSEUM OF NATURAL HISTORY TABLE OF CONTENTS Page INDEPENDENT AUDITORS' REPORT 1 AUDITORS' REPORT To the Board of Trustees of Field Museum of Natural History: We have audited

  2. Field Museum of Natural History

    E-Print Network [OSTI]

    Patterson, Bruce D.

    Field Museum of Natural History Financial Statements as of and for the Years Ended December 31 Auditors' Report #12;FIELD MUSEUM OF NATURAL HISTORY TABLE OF CONTENTS Page INDEPENDENT AUDITORS' REPORT 1 Expenditures 22­23 #12;INDEPENDENT AUDITORS' REPORT To the Board of Trustees of Field Museum of Natural History

  3. Magnetic-field-dosimetry system

    DOE Patents [OSTI]

    Lemon, D.K.; Skorpik, J.R.; Eick, J.L.

    1981-01-21T23:59:59.000Z

    A device is provided for measuring the magnetic field dose and peak field exposure. The device includes three Hall-effect sensors all perpendicular to each other, sensing the three dimensional magnetic field and associated electronics for data storage, calculating, retrieving and display.

  4. Low field magnetic resonance imaging

    DOE Patents [OSTI]

    Pines, Alexander (Berkeley, CA); Sakellariou, Dimitrios (Billancourt, FR); Meriles, Carlos A. (Fort Lee, NJ); Trabesinger, Andreas H. (London, GB)

    2010-07-13T23:59:59.000Z

    A method and system of magnetic resonance imaging does not need a large homogenous field to truncate a gradient field. Spatial information is encoded into the spin magnetization by allowing the magnetization to evolve in a non-truncated gradient field and inducing a set of 180 degree rotations prior to signal acquisition.

  5. 41. DISCOVERY, SEARCH, AND COMMUNICATION OF TEXTUAL KNOWLEDGE RESOURCES IN DISTRIBUTED SYSTEMS a. Discovering and Utilizing Knowledge Sources for Metasearch Knowledge Systems

    SciTech Connect (OSTI)

    Zamora, Antonio

    2008-03-18T23:59:59.000Z

    Advanced Natural Language Processing Tools for Web Information Retrieval, Content Analysis, and Synthesis. The goal of this SBIR was to implement and evaluate several advanced Natural Language Processing (NLP) tools and techniques to enhance the precision and relevance of search results by analyzing and augmenting search queries and by helping to organize the search output obtained from heterogeneous databases and web pages containing textual information of interest to DOE and the scientific-technical user communities in general. The SBIR investigated 1) the incorporation of spelling checkers in search applications, 2) identification of significant phrases and concepts using a combination of linguistic and statistical techniques, and 3) enhancement of the query interface and search retrieval results through the use of semantic resources, such as thesauri. A search program with a flexible query interface was developed to search reference databases with the objective of enhancing search results from web queries or queries of specialized search systems such as DOE's Information Bridge. The DOE ETDE/INIS Joint Thesaurus was processed to create a searchable database. Term frequencies and term co-occurrences were used to enhance the web information retrieval by providing algorithmically-derived objective criteria to organize relevant documents into clusters containing significant terms. A thesaurus provides an authoritative overview and classification of a field of knowledge. By organizing the results of a search using the thesaurus terminology, the output is more meaningful than when the results are just organized based on the terms that co-occur in the retrieved documents, some of which may not be significant. An attempt was made to take advantage of the hierarchy provided by broader and narrower terms, as well as other field-specific information in the thesauri. The search program uses linguistic morphological routines to find relevant entries regardless of whether terms are stored in singular or plural form. Implementation of additional inflectional morphology processes for verbs can enhance retrieval further, but this has to be balanced by the possibility of broadening the results too much. In addition to the DOE energy thesaurus, other sources of specialized organized knowledge such as the Medical Subject Headings (MeSH), the Unified Medical Language System (UMLS), and Wikipedia were investigated. The supporting role of the NLP thesaurus search program was enhanced by incorporating spelling aid and a part-of-speech tagger to cope with misspellings in the queries and to determine the grammatical roles of the query words and identify nouns for special processing. To improve precision, multiple modes of searching were implemented including Boolean operators, and field-specific searches. Programs to convert a thesaurus or reference file into searchable support files can be deployed easily, and the resulting files are immediately searchable to produce relevance-ranked results with builtin spelling aid, morphological processing, and advanced search logic. Demonstration systems were built for several databases, including the DOE energy thesaurus.

  6. Field Performance of Heat Pump Water Heaters in the Northeast

    SciTech Connect (OSTI)

    Shapiro, C.; Puttagunta, S.

    2013-08-01T23:59:59.000Z

    Heat pump water heaters (HPWHs) are finally entering the mainstream residential water heater market. Potential catalysts are increased consumer demand for higher energy efficiency electric water heating and a new Federal water heating standard that effectively mandates use of HPWHs for electric storage water heaters with nominal capacities greater than 55 gallons. When compared to electric resistance water heating, the energy and cost savings potential of HPWHs is tremendous. Converting all electric resistance water heaters to HPWHs could save American consumers 7.8 billion dollars annually ($182 per household) in water heating operating costs and cut annual residential source energy consumption for water heating by 0.70 quads. Steven Winter Associates, Inc. embarked on one of the first in situ studies of these newly released HPWH products through a partnership with two sponsoring electric utility companies, National Grid and NSTAR, and one sponsoring energy efficiency service program administrator, Cape Light Compact. Recent laboratory studies have measured performance of HPWHs under various operating conditions, but publicly available field studies have not been as available. This evaluation attempts to provide publicly available field data on new HPWHs by monitoring the performance of three recently released products (General Electric GeoSpring(tm), A.O. Smith Voltex(r), and Stiebel Eltron Accelera(r)300). Fourteen HPWHs were installed in Massachusetts and Rhode Island and monitored for over a year. Of the 14 units, ten were General Electric models (50 gallon units), two were Stiebel Eltron models (80 gallon units), and two were A.O. Smith models (one 60-gallon and one 80-gallon unit).

  7. Transport of Magnetic Fields in Convective, Accreting Supernova Cores

    E-Print Network [OSTI]

    Christopher Thompson; Norman Murray

    2001-05-24T23:59:59.000Z

    We consider the amplification and transport of a magnetic field in the collapsed core of a massive star, including both the region between the neutrinosphere and the shock, and the central, opaque core. An analytical argument explains why rapid convective overturns persist within a newly formed neutron star for roughly 10 seconds ($> 10^3$ overturns), consistent with recent numerical models. A dynamical balance between turbulent and magnetic stresses within this convective layer corresponds to flux densities in excess of $10^{15}$G. Material accreting onto the core is heated by neutrinos and also becomes strongly convective. We compare the expected magnetic stresses in this convective `gain layer' with those deep inside the neutron core. Buoyant motions of magnetized fluid are greatly aided by the intense neutrino flux. We calculate the transport rate through a medium containing free neutrons protons, and electrons, in the limiting cases of degenerate or non-degenerate nucleons. Fields stronger than $\\sim 10^{13}$ G are able to rise through the outer degenerate layers of the neutron core during the last stages of Kelvin-Helmholtz cooling (up to 10 seconds post-collapse), even though these layers have become stable to convection. We also find the equilibrium shape of a thin magnetic flux rope in the dense hydrostatic atmosphere of the neutron star, along with the critical separation of the footpoints above which the rope undergoes unlimited expansion against gravity. The implications of these results for pulsar magnetism are summarized, and applied to the case of late fallback over the first 1,000-10,000 s of the life of a neutron star

  8. Oil field management system

    DOE Patents [OSTI]

    Fincke, James R.

    2003-09-23T23:59:59.000Z

    Oil field management systems and methods for managing operation of one or more wells producing a high void fraction multiphase flow. The system includes a differential pressure flow meter which samples pressure readings at various points of interest throughout the system and uses pressure differentials derived from the pressure readings to determine gas and liquid phase mass flow rates of the high void fraction multiphase flow. One or both of the gas and liquid phase mass flow rates are then compared with predetermined criteria. In the event such mass flow rates satisfy the predetermined criteria, a well control system implements a correlating adjustment action respecting the multiphase flow. In this way, various parameters regarding the high void fraction multiphase flow are used as control inputs to the well control system and thus facilitate management of well operations.

  9. Microbial field pilot study

    SciTech Connect (OSTI)

    Knapp, R.M.; McInerney, M.J.; Menzie, D.E.

    1991-01-01T23:59:59.000Z

    The objective of this project is to perform a microbially enhanced oil recovery field pilot test in the Southeast Vassar Vertz Sand Unit (SEVVSU) in Payne County, Oklahoma. Indigenous, anaerobic, nitrate-reducing bacteria will be stimulated to selectively plug flow paths which have been preferentially swept by a prior waterflood. This will force future flood water to invade bypassed regions or the reservoir and increase sweep efficiency. Injection of nutrient stimulates the growth and metabolism of reservoir bacteria, which produces beneficial products to enhance oil recovery. Sometimes, chemical treatments are used to clean or condition injection water. Such a chemical treatment has been initiated by Sullivan and Company at the Southeast Vassar Vertz Sand Unit. The unit injection water was treated with a mixture of water, methanol, isopropyl alcohol, and three proprietary chemicals. To determine if the chemicals would have an impact on the pilot, it was important to determine the effects of the chemical additives on the growth and metabolism of the bacteria from wells in this field. Two types of media were used: a mineral salts medium with molasses and nitrate, and this medium with 25 ppm of the treatment chemicals added. Samples were collected anaerobically from each of two wells, 1A-9 and 7-2. A sample from each well was inoculated and cultured in the broth tubes of molasses-nitrate medium with and without the chemicals. Culturing temperature was 35{degrees}C. Absorbance, pressure and cell number were checked to determine if the chemicals affected the growth and metabolism of bacteria in the brine samples. 12 figs.

  10. Phase Preference by Active, Acetate-Utilizing Bacteria at the Rifle, CO Integrated Field Research Challenge Site

    SciTech Connect (OSTI)

    Kerkhof, L.; Williams, K.H.; Long, P.E.; McGuinness, L.

    2011-02-21T23:59:59.000Z

    Previous experiments at the Rifle, Colorado Integrated Field Research Challenge (IFRC) site demonstrated that field-scale addition of acetate to groundwater reduced the ambient soluble uranium concentration. In this report, sediment samples collected before and after acetate field addition were used to assess the active microbes via {sup 13}C acetate stable isotope probing on 3 phases [coarse sand, fines (8-approximately 150 {micro}m), groundwater (0.2-8 {micro}m)] over a 24-day time frame. TRFLP results generally indicated a stronger signal in {sup 13}C-DNA in the 'fines' fraction compared to the sand and groundwater. Before the field-scale acetate addition, a Geobacter-like group primarily synthesized {sup 13}C-DNA in the groundwater phase, an alpha Proteobacterium primarily grew on the fines/sands, and an Acinetobacter sp. and Decholoromonas-like OTU utilized much of the {sup 13}C acetate in both groundwater and particle-associated phases. At the termination of the field-scale acetate addition, the Geobacter-like species was active on the solid phases rather than the groundwater, while the other bacterial groups had very reduced newly synthesized DNA signal. These findings will help to delineate the acetate utilization patterns of bacteria in the field and can lead to improved methods for stimulating distinct microbial populations in situ.

  11. BEER analysis of Kepler and CoRoT light curves. III. Spectroscopic confirmation of seventy new beaming binaries discovered in CoRoT lightcurves

    E-Print Network [OSTI]

    Tal-Or, Lev; Mazeh, Tsevi

    2015-01-01T23:59:59.000Z

    (abridged for arXiv) The BEER algorithm, introduced by Faigler & Mazeh (2011), searches stellar lightcurves for the BEaming, Ellipsoidal, and Reflection photometric modulations caused by a short-period companion. Applying the search to the first five long-run center CoRoT fields, we identified $481$ non-eclipsing candidates with periodic flux amplitudes of $0.5-87$ mmag. Optimizing the Anglo-Australian-Telescope pointing coordinates and the AAOmega fiber-allocations with dedicated softwares, we acquired $6-7$ medium-resolution spectra of $281$ candidates in a seven-night campaign. Analysis of the red-arm AAOmega spectra, which covered the range of $8342-8842$ \\AA{}, yielded a radial-velocity precision of $\\sim1$ km/s. Spectra containing lines of more than one star were analyzed with TODCOR$-$the two-dimensional correlation algorithm. The measured radial velocities confirmed the binarity of seventy of the BEER candidates$-45$ single-line binaries, $18$ double-line binaries, and $7$ diluted binaries. We sho...

  12. Field practice internship final report

    SciTech Connect (OSTI)

    Foster, T.

    1994-05-01T23:59:59.000Z

    This field practice internship final report gives an overview of the field practice, which was completed at the Oak Ridge Y-12 Plant, Martin Marietta Energy Systems, Inc., Environmental Management Department, Oak Ridge, Tennessee. The field practice focused on the completion of the Superfund Amendments and Reauthorization Act (SARA) Title III, Emergency Planning and Community Right-to-Know Act Section 312, Tier II Report. The field practice internship was conducted on a full-time basis between December 13, 1993 through February 18, 1994. Sheila Poligone, Emergency Planning and Community Right-to-Know Act (EPCRA) Coordinator served as the field practice preceptor.

  13. Visual Field Maps, Population Receptive Field Sizes, and Visual Field Coverage in the Human MT Complex

    E-Print Network [OSTI]

    Dumoulin, Serge O.

    of processing in human motion-selective cortex. I N T R O D U C T I O N Neuroimaging experiments localize human by additional experiments. Defining human MT based on stimulus selectivity means that the identificationVisual Field Maps, Population Receptive Field Sizes, and Visual Field Coverage in the Human MT

  14. Noncommutative Field Theories and Gravity

    E-Print Network [OSTI]

    Victor O. Rivelles

    2003-02-21T23:59:59.000Z

    We show that after the Seiberg-Witten map is performed the action for noncommutative field theories can be regarded as a coupling to a field dependent gravitational background. This gravitational background depends only on the gauge field. Charged and uncharged fields couple to different backgrounds and we find that uncharged fields couple more strongly than the charged ones. We also show that the background is that of a gravitational plane wave. A massless particle in this background has a velocity which differs from the velocity of light and we find that the deviation is larger in the uncharged case. This shows that noncommutative field theories can be seen as ordinary theories in a gravitational background produced by the gauge field with a charge dependent gravitational coupling.

  15. A Wide-Field CCD Survey for Centaurs and Kuiper Belt Objects

    E-Print Network [OSTI]

    S. Sheppard; D. Jewitt; C. Trujillo; M. Brown; M. Ashley

    2000-08-29T23:59:59.000Z

    A modified Baker-Nunn camera was used to conduct a wide-field survey of 1428 square degrees of sky near the ecliptic in search of bright Kuiper Belt objects and Centaurs. This area is an order of magnitude larger than any previously published CCD survey for Centaurs and Kuiper Belt Objects. No new objects brighter than red magnitude m=18.8 and moving at a rate 1"/hr to 20"/hr were discovered, although one previously discovered Centaur 1997 CU26 Chariklo was serendipitously detected. The parameters of the survey were characterized using both visual and automated techniques. From this survey the empirical projected surface density of Centaurs was found to be SigmaCentaur(m 1 km) assuming a geometric albedo of 0.04. About 100 Centaurs are larger than 50 km in radius, of which only 4 are presently known. The current total mass of the Centaurs is 10^-4 Earth Masses. No dust clouds were detected resulting from Kuiper Belt object collisions, placing a 3sigma upper limit <600 collisionally produced clouds of m<18.8 per year.

  16. FundedResearch Newly Intergovernmental Personnel Act

    E-Print Network [OSTI]

    Danforth, Bryan Nicholas

    ,590, Department of Commerce An Advanced Materials Approach to Fuel Cell Technologies: Cornell Fuel Cell Institute Unit Alfonso Torres, Population Medicine and Diagnostic Sciences $6,624,145, Department of Health

  17. AIR LEAKAGE OF NEWLY INSTALLED RESIDENTIAL WINDOWS

    E-Print Network [OSTI]

    Weidt, John

    2013-01-01T23:59:59.000Z

    Tables 2.0.2a 2.0.2b PAGE Air Leakage Through Sash/FrameOperation Types . . . . . Air Leakage of Installed WindowsComparison of Window Types Air Leakage Performance of

  18. Bubbling the Newly Grown Black Ring Hair

    E-Print Network [OSTI]

    Orestis Vasilakis

    2012-02-08T23:59:59.000Z

    New families of BPS black ring solutions with four electric and four dipole magnetic charges have recently been explicitly constructed and uplifted to M-theory. These solutions were found to belong to a CFT with central charge different compared to the one of the STU model. Because of their importance to AdS/CFT, here we give the microstate description of these geometries in terms of topological bubbles and supertubes. The fourth charge results in an additional flux through the topological cycles that resolve the brane singularities. The analog of these solutions in the IIB frame yield a generalized regular supertube with three electric charges and one dipole charge. Direct comparison is also made with the previously-known bubbled geometries.

  19. D-brane effective field theory from string field theory

    E-Print Network [OSTI]

    Washington Taylor

    2000-02-15T23:59:59.000Z

    Open string field theory is considered as a tool for deriving the effective action for the massless or tachyonic fields living on D-branes. Some simple calculations are performed in open bosonic string field theory which validate this approach. The level truncation method is used to calculate successive approximations to the quartic terms \\phi^4, (A^\\mu A_\\mu)^2 and [A_\\mu, A_\

  20. The Magnificent Seven: Magnetic fields and surface temperature distributions

    E-Print Network [OSTI]

    F. Haberl

    2006-09-04T23:59:59.000Z

    Presently seven nearby radio-quiet isolated neutron stars discovered in ROSAT data and characterized by thermal X-ray spectra are known. They exhibit very similar properties and despite intensive searches their number remained constant since 2001 which led to their name ``The Magnificent Seven''. Five of the stars exhibit pulsations in their X-ray flux with periods in the range of 3.4 s to 11.4 s. XMM-Newton observations revealed broad absorption lines in the X-ray spectra which are interpreted as cyclotron resonance absorption lines by protons or heavy ions and / or atomic transitions shifted to X-ray energies by strong magnetic fields of the order of 10^13 G. New XMM-Newton observations indicate more complex X-ray spectra with multiple absorption lines. Pulse-phase spectroscopy of the best studied pulsars RX J0720.4-3125 and RBS 1223 reveals variations in derived emission temperature and absorption line depth with pulse phase. Moreover, RX J0720.4-3125 shows long-term spectral changes which are interpreted as due to free precession of the neutron star. Modeling of the pulse profiles of RX J0720.4-3125 and RBS 1223 provides information about the surface temperature distribution of the neutron stars indicating hot polar caps which have different temperatures, different sizes and are probably not located in antipodal positions.

  1. Chimera death induced by the mean-field diffusive coupling

    E-Print Network [OSTI]

    Tanmoy Banerjee

    2014-09-28T23:59:59.000Z

    Recently a novel dynamical state, called the {\\it chimera death}, is discovered in a network of non locally coupled identical oscillators [A. Zakharova, M. Kapeller, and E. Sch\\"oll, Phy.Rev.Lett. 112, 154101 (2014)], which is defined as the coexistence of spatially coherent and incoherent oscillation death state. This state arises due to the interplay of non locality and symmetry breaking and thus bridges the gap between two important dynamical states, namely the chimera and oscillation death. In this paper we show that the chimera death can be induced in a network of generic identical oscillators with mean-field diffusive coupling and thus we establish that a non local coupling is not essential to obtain chimera death. We identify a new transition route to the chimera death state, namely the transition from in-phase synchronized oscillation to chimera death via global amplitude death state. We ascribe the occurrence of chimera death to the bifurcation structure of the network in the limiting condition and show that multi-cluster chimera death states can be achieved by a proper choice of initial conditions.

  2. Pionless Effective Field Theory in Few-Nucleon Systems

    E-Print Network [OSTI]

    Kirscher, Johannes

    2015-01-01T23:59:59.000Z

    A systematic description of low-energy observables in light nuclei is presented. The effective field theory formalism without pions is extended to: i) predictions with next-to-leading-order (non-perturbatively) accuracy for the 4-helium binding energy B({\\alpha}), the triton charge radius, and the 3-helium-neutron scattering length; ii) phase shifts for neutron-deuteron scattering and {\\alpha}-neutron low-energy scattering at leading order; iii) the ground states of the 5-helium (with and without Coulomb interaction) and 6-helium isotopes up to next-to-leading order; The convergence from leading- to next-to-leading order of the theory is demonstrated for correlations between: i) the triton binding energy B(t) and the triton charge radius; ii) B(t) and the 4-helium binding energy B({\\alpha}); Furthermore, a correlation between B(t) and the scattering length in the singlet S-wave channel of neutron-helium-3 scattering is discovered, and a model-independent estimate for the trinucleon binding energy splitting is...

  3. Nonlinear Theory of Fields

    E-Print Network [OSTI]

    Dmitriy Palatnik

    2005-08-12T23:59:59.000Z

    Suggested modification of the Einstein-Maxwell system, such that Maxwell equations become non-gauge and nonlinear. The theory is based on assumption that observable (i.e., felt by particles) metric is $ {\\tilde{g}}_{ab} = g_{ab} - l^2{A}_a{A}_b$, where $g_{ab}$ is metric (found from Einstein equations), $A_a$ is electromagnetic potential, and $l$ is fundamental constant of the theory. Specific model of the mass and charge densities of a fundamental particle is considered. As a result, one obtains solutions corresponding to quantized electrical charge with spectrum $q_{n} = {{2n}\\over3}e$ and $q'_{n} = -{(2n+1)\\over3}e$, where $n = 0, 1, 2, ...$ Theory predicts Coulomb interaction between electrical charges and masses. Namely, if ($m, e$) and ($m',e'$) describe masses and electrical charges of two particles respectively, then energy of interaction (in non-relativistic limit) is $V(r) = [ee' - kmm' - \\sqrt k(em' + e'm)]/r$. It follows, then, that the Earth's mass, $M_E$, contributes negative electrical charge, $Q_E = - \\sqrt k M_E$, which explains why primary cosmic rays consist mainly of positively charged particles. One may attribute the fairweather electric field at the Earth's surface to the charge $Q_E$.

  4. Electronic field permeameter

    DOE Patents [OSTI]

    Chandler, Mark A. (Madison, WI); Goggin, David J. (Austin, TX); Horne, Patrick J. (Austin, TX); Kocurek, Gary G. (Roundrock, TX); Lake, Larry W. (Austin, TX)

    1989-01-01T23:59:59.000Z

    For making rapid, non-destructive permeability measurements in the field, a portable minipermeameter of the kind having a manually-operated gas injection tip is provided with a microcomputer system which operates a flow controller to precisely regulate gas flow rate to a test sample, and reads a pressure sensor which senses the pressure across the test sample. The microcomputer system automatically turns on the gas supply at the start of each measurement, senses when a steady-state is reached, collects and records pressure and flow rate data, and shuts off the gas supply immediately after the measurement is completed. Preferably temperature is also sensed to correct for changes in gas viscosity. The microcomputer system may also provide automatic zero-point adjustment, sensor calibration, over-range sensing, and may select controllers, sensors, and set-points for obtaining the most precise measurements. Electronic sensors may provide increased accuracy and precision. Preferably one microcomputer is used for sensing instrument control and data collection, and a second microcomputer is used which is dedicated to recording and processing the data, selecting the sensors and set-points for obtaining the most precise measurements, and instructing the user how to set-up and operate the minipermeameter. To provide mass data collection and user-friendly operation, the second microcomputer is preferably a lap-type portable microcomputer having a non-volatile or battery-backed CMOS memory.

  5. RESULTS OF FIELD TESTING DOE

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

    FIELD TESTING AT THE DEPARTMENT OF ENERGY, ROCKY MOUNTAIN OILFIELD TESTING CENTER May through September of 2011 RMOTC is an energy testing center that partners with industry to...

  6. Electrochemical formation of field emitters

    DOE Patents [OSTI]

    Bernhardt, Anthony F. (Berkeley, CA)

    1999-01-01T23:59:59.000Z

    Electrochemical formation of field emitters, particularly useful in the fabrication of flat panel displays. The fabrication involves field emitting points in a gated field emitter structure. Metal field emitters are formed by electroplating and the shape of the formed emitter is controlled by the potential imposed on the gate as well as on a separate counter electrode. This allows sharp emitters to be formed in a more inexpensive and manufacturable process than vacuum deposition processes used at present. The fabrication process involves etching of the gate metal and the dielectric layer down to the resistor layer, and then electroplating the etched area and forming an electroplated emitter point in the etched area.

  7. Continuous Profiling of Magnetotelluric Fields

    E-Print Network [OSTI]

    Verdin, C.T.

    2009-01-01T23:59:59.000Z

    those employed in seismic data interpretation under the nameseismic nature, these techniques power implicit in the at least two decades of continued field and interpretation

  8. Cosmic Electromagnetic Fields due to Perturbations in the Gravitational Field

    E-Print Network [OSTI]

    Bishop Mongwane; Peter K. S. Dunsby; Bob Osano

    2012-10-21T23:59:59.000Z

    We use non-linear gauge-invariant perturbation theory to study the interaction of an inflation produced seed magnetic field with density and gravitational wave perturbations in an almost Friedmann-Lema\\^itre-Robertson-Walker (FLRW) spacetime. We compare the effects of this coupling under the assumptions of poor conductivity, infinite conductivity and the case where the electric field is sourced via the coupling of velocity perturbations to the seed field in the ideal magnetohydrodynamic (MHD) regime, thus generalizing, improving on and correcting previous results. We solve our equations for long wavelength limits and numerically integrate the resulting equations to generate power spectra for the electromagnetic field variables, showing where the modes cross the horizon. We find that the rotation of the electric field dominates the power spectrum on small scales, in agreement with previous arguments.

  9. Photometric Variability in the CSTAR Field: Results From the 2008 Data Set

    E-Print Network [OSTI]

    Wang, Songhu; Zhou, Xu; Zhou, Ji-Lin; Fu, Jian-Ning; Yang, Ming; Liu, Huigen; Xie, Jiwei; Wang, Lifan; Wang, Lingzhi; Wittenmyer, R A; Ashley, M C B; Feng, Long-Long; Gong, Xuefei; Lawrence, J S; Liu, Qiang; Luong-Van, D M; Ma, Jun; Peng, Xiyan; Storey, J W V; Wu, Zhenyu; Yan, Jun; Yang, Huigen; Yang, Ji; Yuan, Xiangyan; Zhang, Tianmeng; Zhang, Xiaojia; Zhu, Zhenxi; Zou, Hu

    2015-01-01T23:59:59.000Z

    The Chinese Small Telescope ARray (CSTAR) is the first telescope facility built at Dome A, Antarctica. During the 2008 observing season, the installation provided long-baseline and high-cadence photometric observations in the i-band for 18,145 targets within 20 deg2 CSTAR field around the South Celestial Pole for the purpose of monitoring the astronomical observing quality of Dome A and detecting various types of photometric variability. Using sensitive and robust detection methods, we discover 274 potential variables from this data set, 83 of which are new discoveries. We characterize most of them, providing the periods, amplitudes and classes of variability. The catalog of all these variables is presented along with the discussion of their statistical properties.

  10. Fast superconducting magnetic field switch

    DOE Patents [OSTI]

    Goren, Yehuda (Mountain View, CA); Mahale, Narayan K. (The Woodlands, TX)

    1996-01-01T23:59:59.000Z

    The superconducting magnetic switch or fast kicker magnet is employed with electron stream or a bunch of electrons to rapidly change the direction of flow of the electron stream or bunch of electrons. The apparatus employs a beam tube which is coated with a film of superconducting material. The tube is cooled to a temperature below the superconducting transition temperature and is subjected to a constant magnetic field which is produced by an external dc magnet. The magnetic field produced by the dc magnet is less than the critical field for the superconducting material, thus, creating a Meissner Effect condition. A controllable fast electromagnet is used to provide a magnetic field which supplements that of the dc magnet so that when the fast magnet is energized the combined magnetic field is now greater that the critical field and the superconducting material returns to its normal state allowing the magnetic field to penetrate the tube. This produces an internal field which effects the direction of motion and of the electron stream or electron bunch. The switch can also operate as a switching mechanism for charged particles.

  11. Field observations and lessons learned

    SciTech Connect (OSTI)

    Nielsen, Joh B [Los Alamos National Laboratory

    2010-01-01T23:59:59.000Z

    This presentation outlines observations and lessons learned from the Megaports program. It provides: (1) details of field and technical observations collected during LANL field activities at ports around the world and details of observations collected during radiation detections system testing at Los Alamos National Laboratory; (2) provides suggestions for improvement and efficiency; and (3) discusses possible program execution changes for more effective operations.

  12. Fermion measure and axion fields

    E-Print Network [OSTI]

    Mitra, P

    2015-01-01T23:59:59.000Z

    It is known from path integral studies of the chiral anomaly that the fermion measure has to depend on gauge fields interacting with the fermion. It is argued here that in the presence of axion fields interacting with the fermion, they too may be involved in the measure, with unexpected consequences.

  13. Unified Field Theories Hitoshi Murayama

    E-Print Network [OSTI]

    Murayama, Hitoshi

    Unified Field Theories Hitoshi Murayama Department of Physics, University of California Berkeley This article explains the idea of unified field theories in particle physics. It starts with a historical review of two successful theories which unified two apparently distinct forces: Maxwell's theory

  14. Gerbes and quantum field theory

    E-Print Network [OSTI]

    Jouko Mickelsson

    2006-03-11T23:59:59.000Z

    The basic mechanism how gerbes arise in quantum field theory is explained; in particular the case of chiral fermions in background fields is treated. The role of of various gauge group extensions (central extensions of loop groups and their generalizations) is also explained, in relation to index theory computation of the Dixmier-Douady class of a gerbe.

  15. Compact orthogonal NMR field sensor

    DOE Patents [OSTI]

    Gerald, II, Rex E. (Brookfield, IL); Rathke, Jerome W. (Homer Glen, IL)

    2009-02-03T23:59:59.000Z

    A Compact Orthogonal Field Sensor for emitting two orthogonal electro-magnetic fields in a common space. More particularly, a replacement inductor for existing NMR (Nuclear Magnetic Resonance) sensors to allow for NMR imaging. The Compact Orthogonal Field Sensor has a conductive coil and a central conductor electrically connected in series. The central conductor is at least partially surrounded by the coil. The coil and central conductor are electrically or electro-magnetically connected to a device having a means for producing or inducing a current through the coil and central conductor. The Compact Orthogonal Field Sensor can be used in NMR imaging applications to determine the position and the associated NMR spectrum of a sample within the electro-magnetic field of the central conductor.

  16. Are Cluster Magnetic Fields Primordial ?

    E-Print Network [OSTI]

    Robi Banerjee; Karsten Jedamzik

    2004-09-07T23:59:59.000Z

    We present results of a detailed and fully non-linear numerical and analytical investigation of magnetic field evolution from the very earliest cosmic epochs to the present. We find that, under reasonable assumptions concerning the efficiency of a putative magnetogenesis era during cosmic phase transitions, surprisingly strong magnetic fields 10^{-13} - 10^{-11} Gauss, on comparatively small scales 100 pc - 10 kpc may survive to the present. Building on prior work on the evolution of magnetic fields during the course of gravitational collapse of a cluster, which indicates that pre-collapse fields of 4\\times 10^{-12} Gauss extant on small scales may suffice to produce clusters with acceptable Faraday rotation measures, we question the widely hold view that cluster magnetic fields may not be entirely of primordial origin.

  17. Plasma Production via Field Ionization

    SciTech Connect (OSTI)

    O'Connell, C.L.; Barnes, C.D.; Decker, F.; Hogan, M.J.; Iverson, R.; Krejcik, P.; Siemann, R.; Walz, D.R.; /SLAC; Clayton, C.E.; Huang, C.; Johnson, D.K.; Joshi, C.; Lu,; Marsh, K.A.; Mori, W.; Zhou, M.; /UCLA; Deng, S.; Katsouleas, T.; Muggli, P.; Oz, E.; /Southern California U.

    2007-01-02T23:59:59.000Z

    Plasma production via field ionization occurs when an incoming particle beam is sufficiently dense that the electric field associated with the beam ionizes a neutral vapor or gas. Experiments conducted at the Stanford Linear Accelerator Center explore the threshold conditions necessary to induce field ionization by an electron beam in a neutral lithium vapor. By independently varying the transverse beam size, number of electrons per bunch or bunch length, the radial component of the electric field is controlled to be above or below the threshold for field ionization. Additional experiments ionized neutral xenon and neutral nitric oxide by varying the incoming beam's bunch length. A self-ionized plasma is an essential step for the viability of plasma-based accelerators for future high-energy experiments.

  18. The lithology, environment of deposition, and reservoir evaluation of sandstones in the Upper Queen Formation (Guadalupian, Permian) at Concho Bluff North and Jennifer Fields, Upton and Ector Counties, Texas

    E-Print Network [OSTI]

    Harper, James Broox

    1990-01-01T23:59:59.000Z

    to sandstone and then back to a mudstone, and each cycle records the progradation and retreat of fluvial- deltaic sandflats and mudflats in and out of the back-reef playa. The two fields are considered to be stratigraphic traps on a broad regional.... The playa and mudflats are the non-reservoir facies, and have porosities less than 10% and permeabilities less than 1 md. The North Concho Bluff Field was discovered in 1956, and has produced 7, 515, 218 bbls of oil through 1987. The laterally...

  19. Confluent primary fields in the conformal field theory

    E-Print Network [OSTI]

    Hajime Nagoya; Juanjuan Sun

    2010-08-23T23:59:59.000Z

    For any complex simple Lie algebra, we generalize primary fileds in the Wess-Zumino-Novikov-Witten conformal field theory with respect to the case of irregular singularities and we construct integral representations of hypergeometric functions of confluent type, as expectation values of products of generalized primary fields. In the case of sl(2), these integral representations coincide with solutions to confluent KZ equations. Computing the operator product expansion of the energy-momentum tensor and the generalized primary field, new differential operators appear in the result. In the case of sl(2), these differential operators are the same as those of the confluent KZ equations.

  20. Reversed field pinch current drive with oscillating helical fields

    SciTech Connect (OSTI)

    Farengo, Ricardo; Clemente, Roberto Antonio [Centro Atomico Bariloche e Instituto Balseiro, S.C. de Bariloche (8400), RN (Argentina); Instituto de Fisica Gleb Wataghin, Universidade Estadual de Campinas, 13083-970, Campinas, SP (Brazil)

    2006-04-15T23:59:59.000Z

    The use of oscillating helical magnetic fields to produce and sustain the toroidal and poloidal currents in a reversed field pinch (RFP) is investigated. A simple physical model that assumes fixed ions, massless electrons, and uniform density and resistivity is employed. Thermal effects are neglected in Ohm's law and helical coordinates are introduced to reduce the number of coupled nonlinear equations that must be advanced in time. The results show that it is possible to produce RFP-like magnetic field profiles with pinch parameters close to the experimental values. The efficiencies obtained for moderate resistivity, and the observed scaling, indicate that this could be a very attractive method for high temperature plasmas.

  1. fieldmuseum.org/schools THE FIELD MUSEUM

    E-Print Network [OSTI]

    Patterson, Bruce D.

    fieldmuseum.org/schools THE FIELD MUSEUM #12;The Field Museum | Field Trip Planning Guide for Educators 2 Welcome to The Field Museum! The Field Museum is an exciting place to explore and learn time. Taking a field trip to the Museum o ers students and teachers an opportunity to interact

  2. fieldmuseum.org/schools THE FIELD MUSEUM

    E-Print Network [OSTI]

    Patterson, Bruce D.

    fieldmuseum.org/schools THE FIELD MUSEUM #12;The Field Museum | Field Trip Planning Guide for Educators 2 Welcome to The Field Museum! The Field Museum is an exciting place to explore and learn. Taking a field trip to the Museum o ers students and teachers an opportunity to interact with real

  3. Quantum Field and Cosmic Field-Finite Geometrical Field Theory of Matter Motion Part Three

    E-Print Network [OSTI]

    Jianhua Xiao

    2005-12-20T23:59:59.000Z

    This research establishes an operational measurement way to express the quantum field theory in a geometrical form. In four-dimensional spacetime continuum, the orthogonal rotation is defined. It forms two sets of equations: one set is geometrical equations, another set is the motion equations. The Lorentz transformation can be directly derived from the geometrical equations, and the proper time of general relativity is well expressed by time displacement field. By the motion equations, the typical time displacement field of matter motion is discussed. The research shows that the quantum field theory can be established based on the concept of orthogonal rotation. On this sense, the quantum matter motion in physics is viewed as the orthogonal rotation of spacetime continuum. In this paper, it shows that there are three typical quantum solutions. One is particle-like solution, one is generation-type solution, and one is pure wave type solution. For each typical solution, the force fields are different. Many features of quantum field can be well explained by this theoretic form. Finally, the general matter motion is discussed, the main conclusions are: (1). Geometrically, cosmic vacuum field can be described by the curvature spacetime; (2). The spatial deformation of planet is related with a planet electromagnetic field; (3). For electric charge less matter, the volume of matter will be expanding infinitely; (4).For strong electric charge matter, it shows that the volume of matter will be contracting infinitely.

  4. An overview of craniospinal axis fields and field matching

    SciTech Connect (OSTI)

    Scott, Robin L., E-mail: robinscott631@gmail.com

    2013-01-01T23:59:59.000Z

    Many methods are implemented for craniospinal axis (CSA) radiation treatment (RT). This paper’s goal is to define correctly matched CSA RT fields. Overlap or a space between matched RT fields can create variances of dose and the possibility of negative side effects or disease recurrence, respectively. An accurate CSA RT match procedure is created with localization markers, immobilization devices, equations, feathered matches, safety gap, and portal imaging. A CS match angle is predetermined to optimize patient position before immobilization device fabrication. Various central axis (CA) placements within the brain and spine fields that effect gantry, table, and collimator rotation are described. An overview of the methods used to create CSA RT fields and matches is presented for optimal CSA RT implementation. In addition, to the author’s knowledge, this is the first time that a prone CSA RT with anesthesia has been described.

  5. Noncommutative field with constant background fields and neutral fermion

    E-Print Network [OSTI]

    Cui-bai Luo; Feng-yao Hou; Zhu-fang Cui; Xiao-jun Liu; Hong-shi Zong

    2015-03-02T23:59:59.000Z

    Introducing constant background fields into the noncommutative gauge theory, we first obtain a Hermitian fermion Lagrangian which involves a Lorentz violation term, then we generalize it to a new deformed canonical noncommutation relations for fermion field. Massless neutrino oscillation in the deformed canonical noncommutation relations is analyzed. The restriction of the noncommutative coefficients is also discussed. By comparing with the existing experimental data of conventional neutrino oscillations, the order of noncommutative deformed coefficients is given from different ways.

  6. Generation of Gaussian Density Fields

    E-Print Network [OSTI]

    Hugo Martel

    2005-07-15T23:59:59.000Z

    This document describes analytical and numerical techniques for the generation of Gaussian density fields, which represent cosmological density perturbations. The mathematical techniques involved in the generation of density harmonics in k-space, the filtering of the density fields, and the normalization of the power spectrum to the measured temperature fluctuations of the Cosmic Microwave Background, are presented in details. These techniques are well-known amongst experts, but the current literature lacks a formal description. I hope that this technical report will prove useful to new researchers moving into this field, sparing them the task of reinventing the wheel.

  7. Measurements of magnetic field alignment

    SciTech Connect (OSTI)

    Kuchnir, M.; Schmidt, E.E.

    1987-11-06T23:59:59.000Z

    The procedure for installing Superconducting Super Collider (SSC) dipoles in their respective cryostats involves aligning the average direction of their field with the vertical to an accuracy of 0.5 mrad. The equipment developed for carrying on these measurements is described and the measurements performed on the first few prototypes SSC magnets are presented. The field angle as a function of position in these 16.6 m long magnets is a characteristic of the individual magnet with possible feedback information to its manufacturing procedure. A comparison of this vertical alignment characteristic with a magnetic field intensity (by NMR) characteristic for one of the prototypes is also presented. 5 refs., 7 figs.

  8. High field gradient particle accelerator

    DOE Patents [OSTI]

    Nation, J.A.; Greenwald, S.

    1989-05-30T23:59:59.000Z

    A high electric field gradient electron accelerator utilizing short duration, microwave radiation, and capable of operating at high field gradients for high energy physics applications or at reduced electric field gradients for high average current intermediate energy accelerator applications is disclosed. Particles are accelerated in a smooth bore, periodic undulating waveguide, wherein the period is so selected that the particles slip an integral number of cycles of the r.f. wave every period of the structure. This phase step of the particles produces substantially continuous acceleration in a traveling wave without transverse magnetic or other guide means for the particle. 10 figs.

  9. High field gradient particle accelerator

    DOE Patents [OSTI]

    Nation, John A. (Ithaca, NY); Greenwald, Shlomo (Haifa, IL)

    1989-01-01T23:59:59.000Z

    A high electric field gradient electron accelerator utilizing short duration, microwave radiation, and capable of operating at high field gradients for high energy physics applications or at reduced electric field gradients for high average current intermediate energy accelerator applications. Particles are accelerated in a smooth bore, periodic undulating waveguide, wherein the period is so selected that the particles slip an integral number of cycles of the r.f. wave every period of the structure. This phase step of the particles produces substantially continuous acceleration in a traveling wave without transverse magnetic or other guide means for the particle.

  10. Fsusy and Field Theoretical Construction

    E-Print Network [OSTI]

    M. B. Sedra; J. Zerouaoui

    2009-12-18T23:59:59.000Z

    Following our previous work on fractional spin symmetries (FSS) \\cite{6, 7}, we consider here the construction of field theoretical models that are invariant under the $D=2(1/3,1/3)$ supersymmetric algebra.

  11. Field emission from organic materials

    E-Print Network [OSTI]

    Kymissis, Ioannis, 1977-

    2003-01-01T23:59:59.000Z

    Field emission displays (FEDs) show great promise as high performance flat panel displays. The light emission process is efficient, long lifetimes are possible with high brightness, and bright passive matrix displays can ...

  12. Improvements in Low Field MRI

    E-Print Network [OSTI]

    Ogier, Stephen E

    2013-02-01T23:59:59.000Z

    The world of clinical magnetic resonance imaging (MRI) is presently dominated by multi-million dollar machines that use large superconducting magnets to generate very high quality images. It is possible to perform MRI at lower magnetic field...

  13. Topics in double field theory

    E-Print Network [OSTI]

    Kwak, Seung Ki

    2012-01-01T23:59:59.000Z

    The existence of momentum and winding modes of closed string on a torus leads to a natural idea that the field theoretical approach of string theory should involve winding type coordinates as well as the usual space-time ...

  14. Scalar Field Theory on Supermanifolds

    E-Print Network [OSTI]

    Mir Hameeda

    2012-05-21T23:59:59.000Z

    In this paper we will analyse a scalar field theory on a spacetime with noncommutative and non-anticommutative coordinates. This will be done using supermanifold formalism. We will also analyse its quantization in path integral formalism.

  15. Double field theory at order ??

    E-Print Network [OSTI]

    Hohm, Olaf

    We investigate ?? corrections of bosonic strings in the framework of double field theory. The previously introduced “doubled ??-geometry” gives ??-deformed gauge transformations arising in the Green-Schwarz anomaly ...

  16. Field Flows of Dark Energy

    E-Print Network [OSTI]

    Cahn, Robert N.

    2010-01-01T23:59:59.000Z

    Field Flows of Dark Energy Robert N. Cahn, Roland de Putter,July 8, 2008) Scalar ?eld dark energy evolving from a longthe key aspects of the dark energy evolution during much of

  17. Field ionization from carbon nanofibers

    E-Print Network [OSTI]

    Adeoti, Bosun J

    2008-01-01T23:59:59.000Z

    The Micro Gas Analyzer project aims to develop power-efficient, high resolution, high sensitivity, portable and real-time gas sensors. We developed a field ionizer array based on gated CNTs. Arrays of CNTs are used because ...

  18. Field Fractal Cosmological Model As an Example of Practical Cosmology Approach

    E-Print Network [OSTI]

    Yu. V. Baryshev

    2008-10-01T23:59:59.000Z

    The idea of the global gravitational effect as the source of cosmological redshift was considered by de Sitter (1916, 1917), Eddington (1923), Tolman (1929) and Bondi (1947), also Hubble (1929) called the discovered distance-redshift relation as "De Sitter effect". For homogeneous matter distribution cosmological gravitational redshift is proportional to square of distance: z_grav ~ r^2. However for a fractal matter distribution having the fractal dimension D=2 the global gravitational redshift is the linear function of distance: z_grav ~ r, which gives possibility for interpretation of the Hubble law without the space expansion. Here the field gravity fractal cosmological model (FGF) is presented, which based on two initial principles. The first assumption is that the field gravity theory describes the gravitational interaction within the conceptual unity of all fundamental physical interactions. The second hypothesis is that the spatial distribution of matter is a fractal at all scales up to the Hubble radius. The fractal dimension of matter distribution is assumed to be D = 2, which implies that the global gravitational redshift is the explanation of the observed linear Hubble law. In the frame of the FGF all three phenomena - the cosmic background radiation, the fractal large scale structure, and the Hubble law, -could be consequences of a unique evolution process of the initially homogeneous cold gas. Within field gravity fractal framework a new qualitative picture of the structure and evolution of the Universe has emerged, with some quantitative results that may be tested by current and forthcoming observations.

  19. North Blowhorn Creek oil field - a stratigraphic trap in Black Warrior basin of Alabama

    SciTech Connect (OSTI)

    Bearden, B.L.; Mancini, E.A.; Reeves, P.R.

    1984-04-01T23:59:59.000Z

    The Black Warrior basin of northwestern Alabama contains shallow oil and gas prospects. To date more than 1000 wells have been drilled in the region and more than 90 petroleum fields and pools have been discovered. Mississippian sandstone reservoirs are the most productive horizons for hydrocarbons in the basin, and the Carter sandstone is the most prolific. Identification of stratigraphic traps will enhance petroleum exploration by delineating sand body geometry. Definition reservoir thickness and extent is critical for identifying successful prospects. The North Blowhorn Creek field in Lamar County, Alabama, which produces from the Carter sandstone, is a prime example of a stratigraphic trap. As of March 1983, this field has produced a total of 657,678 bbl of oil and 972,3 mmcf of gas. The Carter sandstone there was deposited as part of a delta which prograded from northwest to southeast across the Black Warrior basin of Alabama. Primary and secondary porosity in the Carter sandstone ranges from 10 to 16% with an average of 13.5%. Permeability ranges from approximately .01-29 md with an average of 10 md. The Parkwood shales interbedded with the Carter sandstone are probably the primary petroleum source beds of the Mississippian hydrocarbons.

  20. A Topological Structure in the Set of Classical Free Radiation Electromagnetic Fields

    E-Print Network [OSTI]

    A. F. Ranada; A. Tiemblo

    2014-07-29T23:59:59.000Z

    The aim of this work is to proceed with the development of a model of topological electromagnetism in empty space, proposed by one of us some time ago and based on the existence of a topological structure associated with the radiation fields in standard Maxwell's theory. This structure consists in pairs of complex scalar fields, say $\\phi$ and $\\theta$, that can be interpreted as maps $\\phi,\\theta: S^3\\mapsto S^2$, the level lines of which are orthogonal to one another, where $S^3$ is the compactified physical 3-space $R^3$, with only one point at infinity, and $S^2$ is the 2-sphere identified with the complete complex plane. These maps were discovered and studied in 1931 by the German mathematician H. Hopf, who showed that the set of all of them can be ordered in homotopy classes, labeled by the so called Hopf index, equal to $\\gamma=\\pm 1,\\,\\pm 2,\\,\\cdots ,\\, \\pm k,...$ but without $\\gamma=0$. In the model presented here and at the level of the scalars $\\phi$ and $\\theta$, the equations of motion are highly nonlinear; however there is a transformation of variables that converts exactly these equations (not by truncation!) into the linear Maxwell's ones for the magnetic and electric fields $\\B$ and $\\E$.

  1. Optical sensor of magnetic fields

    DOE Patents [OSTI]

    Butler, M.A.; Martin, S.J.

    1986-03-25T23:59:59.000Z

    An optical magnetic field strength sensor for measuring the field strength of a magnetic field comprising a dilute magnetic semi-conductor probe having first and second ends, longitudinally positioned in the magnetic field for providing Faraday polarization rotation of light passing therethrough relative to the strength of the magnetic field. Light provided by a remote light source is propagated through an optical fiber coupler and a single optical fiber strand between the probe and the light source for providing a light path therebetween. A polarizer and an apparatus for rotating the polarization of the light is provided in the light path and a reflector is carried by the second end of the probe for reflecting the light back through the probe and thence through the polarizer to the optical coupler. A photo detector apparatus is operably connected to the optical coupler for detecting and measuring the intensity of the reflected light and comparing same to the light source intensity whereby the magnetic field strength may be calculated.

  2. Validation of a Hot Water Distribution Model Using Laboratory and Field Data

    SciTech Connect (OSTI)

    Backman, C.; Hoeschele, M.

    2013-07-01T23:59:59.000Z

    Characterizing the performance of hot water distribution systems is a critical step in developing best practice guidelines for the design and installation of high performance hot water systems. Developing and validating simulation models is critical to this effort, as well as collecting accurate input data to drive the models. In this project, the ARBI team validated the newly developed TRNSYS Type 604 pipe model against both detailed laboratory and field distribution system performance data. Validation efforts indicate that the model performs very well in handling different pipe materials, insulation cases, and varying hot water load conditions. Limitations of the model include the complexity of setting up the input file and long simulation run times. In addition to completing validation activities, this project looked at recent field hot water studies to better understand use patterns and potential behavioral changes as homeowners convert from conventional storage water heaters to gas tankless units. Based on these datasets, we conclude that the current Energy Factor test procedure overestimates typical use and underestimates the number of hot water draws. This has implications for both equipment and distribution system performance. Gas tankless water heaters were found to impact how people use hot water, but the data does not necessarily suggest an increase in usage. Further study in hot water usage and patterns is needed to better define these characteristics in different climates and home vintages.

  3. Discovering relationships in genetic regulatory networks 

    E-Print Network [OSTI]

    Pal, Ranadip

    2004-11-15T23:59:59.000Z

    The development of cDNA microarray technology has made it possible to simultaneously monitor the expression status of thousands of genes. A natural use for this vast amount of information would be to try and ?gure out inter-gene relationships...

  4. Discovering relationships in genetic regulatory networks

    E-Print Network [OSTI]

    Pal, Ranadip

    2004-11-15T23:59:59.000Z

    The development of cDNA microarray technology has made it possible to simultaneously monitor the expression status of thousands of genes. A natural use for this vast amount of information would be to try and ?gure out inter-gene relationships...

  5. Discover this place. Shape your world.

    E-Print Network [OSTI]

    Bordenstein, Seth

    .mcnamara@owen.vanderbilt.edu This report conforms to the MBA Career Services Council Standards for reporting MBA employment statistics. 1

  6. Discover this place. Shape your world.

    E-Print Network [OSTI]

    Bordenstein, Seth

    conforms to the MBA Career Services Council Standards for reporting MBA employment statistics. 1 www

  7. Nuclear Engineering Division Think, explore, discover, innovate

    E-Print Network [OSTI]

    Kemner, Ken

    : "Application of an Annular Metallic Fuel with Lower Gas Plenum for Sodium- cooled Fast Reactor") ANS N. Stauff Award ANS K. Laurin-Kovitz 2013 Best Paper Award in Reactor Physics Division (RPD) (Paper Title Nuclear Society E. Merzari, H. Ninokata(***) 2010 Best Paper in Reactor Physics Division (RPD) American

  8. Using shortest path to discover criminal community

    E-Print Network [OSTI]

    Magalingam, Pritheega; Rao, Asha

    2015-01-01T23:59:59.000Z

    Extracting communities using existing community detection algorithms yields dense sub-networks that are difficult to analyse. Extracting a smaller sample that embodies the relationships of a list of suspects is an important part of the beginning of an investigation. In this paper, we present the efficacy of our shortest paths network search algorithm (SPNSA) that begins with an "algorithm feed", a small subset of nodes of particular interest, and builds an investigative sub-network. The algorithm feed may consist of known criminals or suspects, or persons of influence. This sets our approach apart from existing community detection algorithms. We apply the SPNSA on the Enron Dataset of e-mail communications starting with those convicted of money laundering in relation to the collapse of Enron as the algorithm feed. The algorithm produces sparse and small sub-networks that could feasibly identify a list of persons and relationships to be further investigated. In contrast, we show that identifying sub-networks o...

  9. Discovering the Genome of Data Centers

    E-Print Network [OSTI]

    Hunt, Galen

    Transformer UPS PDU Power grid power Water chillers CRAC air water Racks Internet PUE= #12;Cost 15 year

  10. COMPUTERS DISCOVER WISHES AND CREATIVITY IN

    E-Print Network [OSTI]

    Zhu, Xiaojin "Jerry"

    a novel dimension to sentiment analysis, opinion mining What people explicitly want, not just what for something to happen" Open questions in NLP: How are wishes expressed? How can wishes be automatically sent in their wishes for the new year · Wishes were printed on confetti · Released from the sky

  11. Discovering bottom squark coannihilation at the ILC

    SciTech Connect (OSTI)

    Belyaev, Alexander; Lastovicka, Tomas; Nomerotski, Andrei; Lastovicka-Medin, Gordana [School of Physics and Astronomy, University of Southampton, Highfield, Southampton SO17 1BJ (United Kingdom) and Particle Physics Department, Rutherford Appleton Laboratory, Chilton, Didcot, Oxon OX11 0QX (United Kingdom); University of Oxford, Denys Wilkinson Building, Keble Road, Oxford OX1 3RH (United Kingdom); University of Montenegro, Cetinjska bb, 81 000 Podgorica (Montenegro)

    2010-02-01T23:59:59.000Z

    We study the potential of the international linear collider (ILC) at {radical}(s)=500 GeV to probe new dark matter motivated scenario where the bottom squark (sbottom) is the next-to-lightest supersymmetric particle. For this scenario, which is virtually impossible for the LHC to test, the ILC has a potential to cover a large fraction of the parameter space. The challenge is due to a very low energy of jets, below 20-30 GeV, which pushes the jet clustering and flavor tagging algorithms to their limits. The process of sbottom pair production was studied within the SiD detector concept. We demonstrate that ILC offers a unique opportunity to test the supersymmetry parameter space motivated by the sbottom-neutralino coannihilation scenario in cases when the sbottom production is kinematically accessible. The study was done with the full SiD simulation and reconstruction chain including all standard model and beam backgrounds.

  12. Futurity: Discover the Future Earth & Environment

    E-Print Network [OSTI]

    Suslick, Kenneth S.

    Comments Formula for fighting crime hot spots Tuesday, March 23, 2010 - 0 Comments Men who batter think out brands Tags: aroma, chemistry, coffee, colorimetric sensor, optoelectronics, University.org/science-technology/electronic-coffee-snob-sniffs-out-brands/ #12;Researchers have created a colorimetric sensor array, known as an optoelectronic nose, to analyze

  13. Discovering colorons at the early stage LHC

    SciTech Connect (OSTI)

    Dicus, Duane A. [Center for Particles and Fields and Texas Cosmology Center, University of Texas, Austin, Texas 78712 (United States); Kao, Chung; Sayre, Joshua [Homer L. Dodge Department of Physics and Astronomy and Oklahoma Center for High Energy Physics, University of Oklahoma, Norman, Oklahoma 73019 (United States); Nandi, S. [Department of Physics and Oklahoma Center for High Energy Physics, Oklahoma State University, Stillwater, Oklahoma 74078 (United States)

    2011-05-01T23:59:59.000Z

    Prospects are investigated for the discovery of massive hypergluons using data from the early runs of the Large Hadron Collider. A center of mass energy of 7 TeV and an integrated luminosity of 1 fb{sup -1} or 5 fb{sup -1} are assumed. A phenomenological Lagrangian is adopted to evaluate the cross section of a pair of colored vector bosons (colorons, {rho}-tilde) decaying into four colored scalar resonances (hyperpions, {pi}-tilde), which then decay into eight gluons. The dominant eight-jet background from the production of 8g, 7g1q, 6g2q, and 5g3q is included. We find an abundance of signal events and that realistic cuts reduce the background enough to establish a 5{sigma} signal for the coloron mass of up to 733 GeV with 1 fb{sup -1} or 833 GeV with 5 fb{sup -1}.

  14. Labeling, discovering, and detecting objects in images

    E-Print Network [OSTI]

    Russell, Bryan Christopher, 1979-

    2008-01-01T23:59:59.000Z

    Recognizing the many objects that comprise our visual world is a difficult task. Confounding factors, such as intra-class object variation, clutter, pose, lighting, dealing with never-before seen objects, scale, and lack ...

  15. Estimating the Robustness of Discovered Knowledge \\Lambda

    E-Print Network [OSTI]

    Hsu, Chun-Nan

    ,country,latitude,longitude), seaport(name,glc cd,storage,silo,crane,rail). Rules: R1: ?latitude â?? 35.89 ( geoloc( , ,''Malta'',?latitude, ). R2: seaport( ,?glc cd, , , , ) ( geoloc( ,?glc cd,''Malta'', , ). R3: ?storage ? 2000000 ( seaport( ,?glc cd,?storage, , , ) â?? geoloc( ,?glc cd,''Malta'', , ). Table 1: Schema of a geographic database

  16. Physical fields and Clifford algebras II. Neutrino field

    E-Print Network [OSTI]

    Vadim V. Varlamov

    1998-02-24T23:59:59.000Z

    The neutrino field is considered in the framework of a complex Clifford algebra $\\C_3\\cong\\C_2\\oplus\\stackrel{\\ast}{\\C}_2$. The factor-algebras ${}^{\\epsilon}\\C_2$ and ${}^{\\epsilon}\\stackrel{\\ast}{\\C}_2$, which are obtained by means of homomorphic mappings $\\C_3\\to\\C_2$ and $\\C_3\\to\\stackrel{\\ast}{\\C}_2$, are identified with the neutrino and antineutrino fields, respectively. In this framework we have natural explanation for absence of right-handed neutrino and left-handed antineutrino.

  17. Noncommutative field gas driven inflation

    E-Print Network [OSTI]

    Luciano Barosi; Francisco A. Brito; Amilcar R. Queiroz

    2008-03-14T23:59:59.000Z

    We investigate early time inflationary scenarios in an Universe filled with a dilute noncommutative bosonic gas at high temperature. A noncommutative bosonic gas is a gas composed of bosonic scalar field with noncommutative field space on a commutative spacetime. Such noncommutative field theories was recently introduced as a generalization of quantum mechanics on a noncommutative spacetime. As key features of these theories are Lorentz invariance violation and CPT violation. In the present study we use a noncommutative bosonic field theory that besides the noncommutative parameter $\\theta$ shows up a further parameter $\\sigma$. This parameter $\\sigma$ controls the range of the noncommutativity and acts as a regulator for the theory. Both parameters play a key role in the modified dispersion relations of the noncommutative bosonic field, leading to possible striking consequences for phenomenology. In this work we obtain an equation of state $p=\\omega(\\sigma,\\theta;\\beta)\\rho$ for the noncommutative bosonic gas relating pressure $p$ and energy density $\\rho$, in the limit of high temperature. We analyse possible behaviours for this gas parameters $\\sigma$, $\\theta$ and $\\beta$, so that $-1\\leq\\omega<-1/3$, which is the region where the Universe enters an accelerated phase.

  18. Noncommutative field gas driven inflation

    SciTech Connect (OSTI)

    Barosi, Luciano; Brito, Francisco A [Departamento de Fisica, Universidade Federal de Campina Grande, Caixa Postal 10071, 58109-970 Campina Grande, Paraiba (Brazil); Queiroz, Amilcar R, E-mail: lbarosi@ufcg.edu.br, E-mail: fabrito@df.ufcg.edu.br, E-mail: amilcarq@gmail.com [Centro Internacional de Fisica da Materia Condensada, Universidade de Brasilia, Caixa Postal 04667, Brasilia, DF (Brazil)

    2008-04-15T23:59:59.000Z

    We investigate early time inflationary scenarios in a Universe filled with a dilute noncommutative bosonic gas at high temperature. A noncommutative bosonic gas is a gas composed of a bosonic scalar field with noncommutative field space on a commutative spacetime. Such noncommutative field theories were recently introduced as a generalization of quantum mechanics on a noncommutative spacetime. Key features of these theories are Lorentz invariance violation and CPT violation. In the present study we use a noncommutative bosonic field theory that, besides the noncommutative parameter {theta}, shows up a further parameter {sigma}. This parameter {sigma} controls the range of the noncommutativity and acts as a regulator for the theory. Both parameters play a key role in the modified dispersion relations of the noncommutative bosonic field, leading to possible striking consequences for phenomenology. In this work we obtain an equation of state p = {omega}({sigma},{theta};{beta}){rho} for the noncommutative bosonic gas relating pressure p and energy density {rho}, in the limit of high temperature. We analyse possible behaviours for these gas parameters {sigma}, {theta} and {beta}, so that -1{<=}{omega}<-1/3, which is the region where the Universe enters an accelerated phase.

  19. Habitat of oil in the Lindsborg field, Salina basin, north-central Kansas

    SciTech Connect (OSTI)

    Newell, K.D. (Univ. of Kansas, Lawrence (United States))

    1991-03-01T23:59:59.000Z

    The Lindsborg field was discovered in 1938, and is now 14 mi in length and 1-2 mi in width. It has a projected ultimate recovery of 16 MMBO. Three pay zones (5-20 ft thick) produce in the field. The Simpson pay zone (Middle Ordovician) is a well-rounded, quartzitic sandstone that is interpreted to be a paralic, high-energy shelf deposit. The Viola pay (Middle Ordovician) appears to be a dolomitic, lime grainstone but no cores are available to confirm this. The uppermost pay zone, the Upper Ordovician Maquoketa, is a finely laminated, vuggy, cherry dolomite interpreted to have been deposited as a subtidal lime mudstone in a restricted lagoon. The Simpson and Viola pays are structurally trapped in culminations along the crest of the Lindsborg anticline. Although the Maquoketa pay is structurally trapped with the other pay zones in the southern half of the field, its locus of production in the north half of the fields extends 100 ft vertically down the western flank of the anticline. The trapping mechanism is unclear due to lack of core control and modern logging suites, but it may be subtle updip diagenetic change from vuggy to nonvuggy dolomite. The Simpson and Maquoketa oils are geochemically distinct. Both may reflect efficient local source-to-reservoir migration from originally rich but marginally mature Ordovician and Devonian shales that contact each pay zone. If oil in the Lindsborg field is locally generated, the prospectivity of the relatively unproductive and underexplored Salina basin may be enhanced.

  20. Crystal structure and solution characterization of the thioredoxin-2 from Plasmodium falciparum, a constituent of an essential parasitic protein export complex

    E-Print Network [OSTI]

    Peng, M; Cascio, D; Egea, PF; Egea, PF

    2015-01-01T23:59:59.000Z

    PTEX component HSP101 mediates export of diverse malariaan essential nexus for protein export in malaria parasites,Crabb, A newly discovered protein export machine in malaria

  1. Coal Development (Nebraska)

    Broader source: Energy.gov [DOE]

    This section provides for the development of newly-discovered coal veins in the state, and county aid for such development.

  2. Dark spaces could change the way we think about galaxies

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

    cancer, anemia gleaned from ribosome research Complex systems influence melting of Greenland ice sheet Related Articles All Stories The newly discovered rolling movement shown...

  3. Feeding the periphery : modeling early Bronze Age economies and the cultural landscape of the Faynan District, Southern Jordan

    E-Print Network [OSTI]

    Muniz, Adolfo A.

    2007-01-01T23:59:59.000Z

    Archaeology and Early Metallurgy at Khirbet Hamra Ifdan andSabanne 1989 Copper Metallurgy, Trade and the Urbanization2002 Early Bronze Age Metallurgy: A Newly Discovered Copper

  4. Understanding the role of production and craft specialization in ancient socio-economic systems : toward the integration of spatial analysis, 3D modeling and virtual reality in archaeology

    E-Print Network [OSTI]

    Knabb, Kyle Andrew

    2008-01-01T23:59:59.000Z

    Deep- Time Studies of Metallurgy and Social Evolution in the2002. Early Bronze Age Metallurgy: A Newly Discovered Copper1970. The Extractive Metallurgy of the Early Iron Age.

  5. Social boundaries and state formation in ancient Edom : a comparative ceramic approach

    E-Print Network [OSTI]

    Smith, Neil G.

    2009-01-01T23:59:59.000Z

    Archaeology and Early Metallurgy at Khirbet Hamra Ifdan and2002. Early Bronze Age Metallurgy: A Newly Discovered CopperM. Waggoner. 2001. Early Metallurgy, Interaction, and Social

  6. Tax Credits, Rebates & Savings | Department of Energy

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

    Coal Development (Nebraska) This section provides for the development of newly-discovered coal veins in the state, and county aid for such development. Eligibility: Agricultural,...

  7. Single-walled carbon nanotubes as near infrared fluorescent sensors : characterization, biological and analytical applications

    E-Print Network [OSTI]

    Jin, Hong, Ph. D. Massachusetts Institute of Technology

    2010-01-01T23:59:59.000Z

    Reactive oxygen species (ROS) have emerged as biological signaling molecules, participating in newly discovered cascades that govern cell proliferation, migration, and pathogenesis. A major challenge in understanding these ...

  8. RELATIVISTIC QUANTUM FIELD THEORY OF A HYPERNUCLEI

    E-Print Network [OSTI]

    Boguta, J.

    2013-01-01T23:59:59.000Z

    0 Nuclei in Relativistic Field Theory of Nuclear Matter, LBLRelativistic Quantum Field Theory of Finite Nuclei, LBL prein a Relativistic Mean-Field Theory, Stanford preprint F.E.

  9. CLASSICAL FIELD THEORY WITH Z (3) SYMMETRY

    E-Print Network [OSTI]

    Ruck, H.M.

    2010-01-01T23:59:59.000Z

    and H.M. Ruck, Quantum field theory Potts model, J. Math.in cyclic symmetry field theories, Nucl. Phys. B167 M.J.waves in nonlinear field theories, Phys. Rev. Lett. 32. R.

  10. Split string field theory I

    E-Print Network [OSTI]

    David J. Gross; Washington Taylor

    2001-06-04T23:59:59.000Z

    We describe projection operators in the matter sector of Witten's cubic string field theory using modes on the right and left halves of the string. These projection operators represent a step towards an analytic solution of the equations of motion of the full string field theory, and can be used to construct Dp-brane solutions of the string field theory when the BRST operator Q is taken to be pure ghost, as suggested in the recent conjecture by Rastelli, Sen and Zwiebach. We show that a family of solutions related to the sliver state are rank one projection operators on the appropriate space of half-string functionals, and we construct higher rank projection operators corresponding to configurations of multiple D-branes.

  11. Thermalization in External Magnetic Field

    E-Print Network [OSTI]

    Ali-Akbari, Mohammad

    2012-01-01T23:59:59.000Z

    In the AdS/CFT framework meson thermalization in the presence of a constant external magnetic field in a strongly coupled gauge theory has been studied. In the gravitational description the thermalization of mesons corresponds to the horizon formation on the flavour D7-brane which is embedded in the AdS_5 x S^5 background in the probe limit. The apparent horizon forms due to the time-dependent change in the baryon number chemical potential, the injection of baryons in the gauge theory. We will numerically show that the thermalization happens even faster in the presence of the magnetic field on the probe brane. We observe that this reduction in the thermalization time sustains up to a specific value of the magnetic field.

  12. field

    National Nuclear Security Administration (NNSA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilA Approved:AdministrationAnalysisDarby Dietrich5 |0/%2A0/%2A en6/%2A

  13. Variational methods for field theories

    SciTech Connect (OSTI)

    Ben-Menahem, S.

    1986-09-01T23:59:59.000Z

    Four field theory models are studied: Periodic Quantum Electrodynamics (PQED) in (2 + 1) dimensions, free scalar field theory in (1 + 1) dimensions, the Quantum XY model in (1 + 1) dimensions, and the (1 + 1) dimensional Ising model in a transverse magnetic field. The last three parts deal exclusively with variational methods; the PQED part involves mainly the path-integral approach. The PQED calculation results in a better understanding of the connection between electric confinement through monopole screening, and confinement through tunneling between degenerate vacua. This includes a better quantitative agreement for the string tensions in the two approaches. Free field theory is used as a laboratory for a new variational blocking-truncation approximation, in which the high-frequency modes in a block are truncated to wave functions that depend on the slower background modes (Boron-Oppenheimer approximation). This ''adiabatic truncation'' method gives very accurate results for ground-state energy density and correlation functions. Various adiabatic schemes, with one variable kept per site and then two variables per site, are used. For the XY model, several trial wave functions for the ground state are explored, with an emphasis on the periodic Gaussian. A connection is established with the vortex Coulomb gas of the Euclidean path integral approach. The approximations used are taken from the realms of statistical mechanics (mean field approximation, transfer-matrix methods) and of quantum mechanics (iterative blocking schemes). In developing blocking schemes based on continuous variables, problems due to the periodicity of the model were solved. Our results exhibit an order-disorder phase transition. The transfer-matrix method is used to find a good (non-blocking) trial ground state for the Ising model in a transverse magnetic field in (1 + 1) dimensions.

  14. USING CABLE SUSPENDED SUBMERSIBLE PUMPS TO REDUCE PRODUCTION COSTS TO INCREASE ULTIMATE RECOVERY IN THE RED MOUNTAIN FIELD OF THE SAN JUAN BASIN REGION

    SciTech Connect (OSTI)

    Don L. Hanosh

    2004-11-01T23:59:59.000Z

    This report discusses: (1) being able to resume marginal oil production operations in the Red Mountain Oil Field, located in McKinley County, New Mexico by installing a cable suspended electric submersible pumping system (HDESP); (2) determining if this system can reduce life costs making it a more cost effective production system for similar oil fields within the region, and if warranted, drill additional wells to improve the economics. In April 2003, a cooperative 50% cost share agreement between Enerdyne and the DOE was executed to investigate the feasibility of using cable suspended electric submersible pumps to reduce the life costs and increase the ultimate oil recovery of the Red Mountain Oil Field, located on the Chaco Slope of the San Juan Basin, New Mexico. The field was discovered in 1934 and has produced approximately 55,650 cubic meters (m{sup 3}), (350,000 barrels, 42 gallons) of oil. Prior to April 2003, the field was producing only a few cubic meters of oil each month; however, the reservoir characteristics suggest that the field retains ample oil to be economic. This field is unique, in that, the oil accumulations, above fresh water, occur at depths from 88-305 meters, (290 feet to 1000 feet), and serves as a relatively good test area for this experiment.

  15. Dynamics of generalized tachyon field

    E-Print Network [OSTI]

    Rong-Jia Yang; Jingzhao Qi

    2012-08-06T23:59:59.000Z

    We investigate the dynamics of generalized tachyon field in FRW spacetime. We obtain the autonomous dynamical system for the general case. Because the general autonomous dynamical system cannot be solved analytically, we discuss two cases in detail: $\\beta=1$ and $\\beta=2$. We find the critical points and study their stability. At these critical points, we also consider the stability of the generalized tachyon field, which is as important as the stability of critical points. The possible final states of the universe are discussed.

  16. Wide field of view telescope

    DOE Patents [OSTI]

    Ackermann, Mark R. (Albuquerque, NM); McGraw, John T. (Placitas, NM); Zimmer, Peter C. (Albuquerque, NM)

    2008-01-15T23:59:59.000Z

    A wide field of view telescope having two concave and two convex reflective surfaces, each with an aspheric surface contour, has a flat focal plane array. Each of the primary, secondary, tertiary, and quaternary reflective surfaces are rotationally symmetric about the optical axis. The combination of the reflective surfaces results in a wide field of view in the range of approximately 3.8.degree. to approximately 6.5.degree.. The length of the telescope along the optical axis is approximately equal to or less than the diameter of the largest of the reflective surfaces.

  17. Solid phase microextraction field kit

    DOE Patents [OSTI]

    Nunes, Peter J.; Andresen, Brian D.

    2005-08-16T23:59:59.000Z

    A field kit for the collection, isolation and concentration of trace amounts of high explosives (HE), biological weapons (BW) and chemical weapons (CW) residues in air, soil, vegetation, swipe, and liquid samples. The field kit includes a number of Solid Phase Microextraction (SPME) fiber and syringe assemblies in a hermetically sealed transportation container or tubes which includes a sampling port, a number of extra SPME fiber and syringe assemblies, the fiber and syringe assemblies including a protective cap for the fiber, and an extractor for the protective cap, along with other items including spare parts, protective glove, and an instruction manual, all located in an airtight container.

  18. String-Organized Field Theory

    E-Print Network [OSTI]

    C. S. Lam

    1994-06-24T23:59:59.000Z

    A low energy string theory should reduce to an ordinary quantum field theory, but in reality the structures of the two are so different as to make the equivalence obscure. The string formalism is more symmetrical between the spacetime and the internal degrees of freedom, thus resulting in considerable simplification in practical calculations and novel insights in theoretical understandings. We review here how tree or multiloop field-theoretical diagrams can be organized in a string-like manner to take advantage of this computational and conceptual simplicity.

  19. Spherically symmetric scalar field collapse

    E-Print Network [OSTI]

    Koyel Ganguly; Narayan Banerjee

    2012-10-03T23:59:59.000Z

    It is shown that a scalar field, minimally coupled to gravity may have collapsing modes even when the energy condition is violated, that is, for $(\\rho+3p)<0$. This result may be useful in the investigation of the possible clustering of dark energy. All the examples dealt with have apparent horizons which form before the formation of the singularity. The singularities formed are shell focusing in nature. The density of the scalar field distribution is seen to diverge at singularity. The Ricci scalar also diverges at the singularity. The interior spherically symmetric metric is matched with exterior Vaidya metric at the hypersurface and the appropriate junction conditions are obtained.

  20. Negative Energies and Field Theory

    E-Print Network [OSTI]

    Gerald E. Marsh

    2008-11-20T23:59:59.000Z

    The assumption that the vacuum is the minimum energy state, invariant under unitary transformations, is fundamental to quantum field theory. However, the assertion that the conservation of charge implies that the equal time commutator of the charge density and its time derivative vanish for two spatially separated points is inconsistent with the requirement that the vacuum be the lowest energy state. Yet, for quantum field theory to be gauge invariant, this commutator must vanish. This essay explores how this conundrum is resolved in quantum electrodynamics.

  1. Phenomenology of Noncommutative Field Theories

    E-Print Network [OSTI]

    Christopher D. Carone

    2004-09-29T23:59:59.000Z

    Experimental limits on the violation of four-dimensional Lorentz invariance imply that noncommutativity among ordinary spacetime dimensions must be small. In this talk, I review the most stringent bounds on noncommutative field theories and suggest a possible means of evading them: noncommutativity may be restricted to extra, compactified spatial dimensions. Such theories have a number of interesting features, including Abelian gauge fields whose Kaluza-Klein excitations have self couplings. We consider six-dimensional QED in a noncommutative bulk, and discuss the collider signatures of the model.

  2. Renormalization and quantum field theory

    E-Print Network [OSTI]

    R. E. Borcherds

    2011-03-09T23:59:59.000Z

    The aim of this paper is to describe how to use regularization and renormalization to construct a perturbative quantum field theory from a Lagrangian. We first define renormalizations and Feynman measures, and show that although there need not exist a canonical Feynman measure, there is a canonical orbit of Feynman measures under renormalization. We then construct a perturbative quantum field theory from a Lagrangian and a Feynman measure, and show that it satisfies perturbative analogues of the Wightman axioms, extended to allow time-ordered composite operators over curved spacetimes.

  3. Livermore Field Office | National Nuclear Security Administration

    National Nuclear Security Administration (NNSA)

    Us Our Operations Management and Budget Office of Civil Rights Workforce Statistics Livermore Field Office Livermore Field Office FY15 Semi Annual Report FY14 Year...

  4. Sandia Field Office | National Nuclear Security Administration

    National Nuclear Security Administration (NNSA)

    Us Our Operations Management and Budget Office of Civil Rights Workforce Statistics Sandia Field Office Sandia Field Office FY15 Semi Annual Report FY14 Year End...

  5. Pantex Field Office | National Nuclear Security Administration

    National Nuclear Security Administration (NNSA)

    Us Our Operations Management and Budget Office of Civil Rights Workforce Statistics Pantex Field Office Pantex Field Office FY12 Semi Annual Report FY11 Year End...

  6. Nevada Field Office | National Nuclear Security Administration

    National Nuclear Security Administration (NNSA)

    Us Our Operations Management and Budget Office of Civil Rights Workforce Statistics Nevada Field Office Nevada Field Office FY15 Semi Annual Report FY14 Year End...

  7. Field's Point Wastewater Treatment Facility (Narragansett Bay...

    Open Energy Info (EERE)

    Field's Point Wastewater Treatment Facility (Narragansett Bay Commission) Jump to: navigation, search Name Field's Point Wastewater Treatment Facility (Narragansett Bay Commission)...

  8. A new magnetic field integral measurement system

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

    measurements. b. Second field integral (horizontal and vertical) measurements. c. Multipole components of first field integral measurements. 2. Translation Coil a. Multipole...

  9. SHIP VELOCITY FIELDS , Lichuan Guib

    E-Print Network [OSTI]

    Gui, Lichuan

    directions. 1. Introduction Knowledge of flow around ships is important for design, model development, and computational fluid dynamics (CFD) validation. Historically, five-hole pitot probes have been used for measuring of multi-hole pitot and Laser-doppler systems, they both require measurement of ship velocity fields

  10. Quantum Field Theory Mark Srednicki

    E-Print Network [OSTI]

    Akhmedov, Azer

    The Spin-Statistics Theorem (3) 45 5 The LSZ Reduction Formula (3) 49 6 Path Integrals in Quantum Mechanics Quantization of Spinor Fields II (38) 246 40 Parity, Time Reversal, and Charge Conjugation (23, 39) 254 #12, 59) 369 #12;6 63 The Vertex Function in Spinor Electrodynamics (62) 378 64 The Magnetic Moment

  11. Covariant Geometric Prequantization of Fields

    E-Print Network [OSTI]

    Kanatchikov, I V

    2002-01-01T23:59:59.000Z

    A geometric prequantization formula for the Poisson-Gerstenhaber bracket on forms found within the DeDonder-Weyl Hamiltonian formalism earlier is presented. The related aspects of covariant geometric quantization of field theories are sketched. In particular, the importance of the framework of Clifford and spinor bundles and superconnections in this context is underlined.

  12. Covariant Geometric Prequantization of Fields

    E-Print Network [OSTI]

    I. V. Kanatchikov

    2001-01-04T23:59:59.000Z

    A geometric prequantization formula for the Poisson-Gerstenhaber bracket of forms found within the DeDonder-Weyl Hamiltonian formalism earlier is presented. The related aspects of covariant geometric quantization of field theories are sketched. In particular, the importance of the framework of Clifford and spinor bundles and superconnections in this context is underlined.

  13. Field Internship Claire P. Curtis

    E-Print Network [OSTI]

    Young, Paul Thomas

    POLI 402 Field Internship Claire P. Curtis Office: 114 Wentworth, #206 Office Hours: M, 9-11, W 12-2 Phone: 953-6510 e-mail: curtisc@cofc.edu This course provides an opportunity to do an internship in Charleston, to interact with other political science students also doing internships and to ground

  14. Electric field divertor plasma pump

    DOE Patents [OSTI]

    Schaffer, M.J.

    1994-10-04T23:59:59.000Z

    An electric field plasma pump includes a toroidal ring bias electrode positioned near the divertor strike point of a poloidal divertor of a tokamak, or similar plasma-confining apparatus. For optimum plasma pumping, the separatrix of the poloidal divertor contacts the ring electrode, which then also acts as a divertor plate. A plenum or other duct near the electrode includes an entrance aperture open to receive electrically-driven plasma. The electrode is insulated laterally with insulators, one of which is positioned opposite the electrode at the entrance aperture. An electric field E is established between the ring electrode and a vacuum vessel wall, with the polarity of the bias applied to the electrode being relative to the vessel wall selected such that the resultant electric field E interacts with the magnetic field B already existing in the tokamak to create an E [times] B/B[sup 2] drift velocity that drives plasma into the entrance aperture. The pumped plasma flow into the entrance aperture is insensitive to variations, intentional or otherwise, of the pump and divertor geometry. Pressure buildups in the plenum or duct connected to the entrance aperture in excess of 10 mtorr are achievable. 11 figs.

  15. Electric field divertor plasma pump

    DOE Patents [OSTI]

    Schaffer, Michael J. (San Diego, CA)

    1994-01-01T23:59:59.000Z

    An electric field plasma pump includes a toroidal ring bias electrode (56) positioned near the divertor strike point of a poloidal divertor of a tokamak (20), or similar plasma-confining apparatus. For optimum plasma pumping, the separatrix (40) of the poloidal divertor contacts the ring electrode (56), which then also acts as a divertor plate. A plenum (54) or other duct near the electrode (56) includes an entrance aperture open to receive electrically-driven plasma. The electrode (56) is insulated laterally with insulators (63,64), one of which (64) is positioned opposite the electrode at the entrance aperture. An electric field E is established between the ring electrode (56) and a vacuum vessel wall (22), with the polarity of the bias applied to the electrode being relative to the vessel wall selected such that the resultant electric field E interacts with the magnetic field B already existing in the tokamak to create an E.times.B/B.sup.2 drift velocity that drives plasma into the entrance aperture. The pumped plasma flow into the entrance aperture is insensitive to variations, intentional or otherwise, of the pump and divertor geometry. Pressure buildups in the plenum or duct connected to the entrance aperture in excess of 10 mtorr are achievable.

  16. Quantum Field Theory in Graphene

    E-Print Network [OSTI]

    I. V. Fialkovsky; D. V. Vassilevich

    2011-11-18T23:59:59.000Z

    This is a short non-technical introduction to applications of the Quantum Field Theory methods to graphene. We derive the Dirac model from the tight binding model and describe calculations of the polarization operator (conductivity). Later on, we use this quantity to describe the Quantum Hall Effect, light absorption by graphene, the Faraday effect, and the Casimir interaction.

  17. Linear electric field mass spectrometry

    DOE Patents [OSTI]

    McComas, D.J.; Nordholt, J.E.

    1992-12-01T23:59:59.000Z

    A mass spectrometer and methods for mass spectrometry are described. The apparatus is compact and of low weight and has a low power requirement, making it suitable for use on a space satellite and as a portable detector for the presence of substances. High mass resolution measurements are made by timing ions moving through a gridless cylindrically symmetric linear electric field. 8 figs.

  18. FIELD RELIABILITY OF ELECTRONIC SYSTEMS

    E-Print Network [OSTI]

    study of in-the-field experience of electronics reliability. Tage Elm. Abstract. This report and internally) induced failures. The report is not meant to be merely an indication of the state of the art for the re- liability prediction methods we know, but also as a contribution to the investigation of man-machine

  19. Calculator simplifies field production forecasting

    SciTech Connect (OSTI)

    Bixler, B.

    1982-05-01T23:59:59.000Z

    A method of forecasting future field production from an assumed average well production schedule and drilling schedule has been programmed for the HP-41C hand-held programmable computer. No longer must tedious row summations be made by hand for staggered well production schedules. Details of the program are provided.

  20. Noncommutative Quantum Scalar Field Cosmology

    SciTech Connect (OSTI)

    Diaz Barron, L. R.; Lopez-Dominguez, J. C.; Sabido, M. [Departamento de Fisica, DCI-Campus Leon, Universidad de Guanajuato, A.P. E-143, C.P. 37150, Guanajuato (Mexico); Yee, C. [Departamento de Matematicas, Facultad de Ciencias, Universidad Autonoma de Baja California, Ensenada, Baja California (Mexico)

    2010-07-12T23:59:59.000Z

    In this work we study noncommutative Friedmann-Robertson-Walker (FRW) cosmology coupled to a scalar field endowed with an exponential potential. The quantum scenario is analyzed in the Bohmian formalism of quantum trajectories to investigate the effects of noncommutativity in the evolution of the universe.

  1. Propagators for Noncommutative Field Theories

    E-Print Network [OSTI]

    R. Gurau; V. Rivasseau; F. Vignes-Tourneret

    2006-02-06T23:59:59.000Z

    In this paper we provide exact expressions for propagators of noncommutative Bosonic or Fermionic field theories after adding terms of the Grosse-Wulkenhaar type in order to ensure Langmann-Szabo covariance. We emphasize the new Fermionic case and we give in particular all necessary bounds for the multiscale analysis and renormalization of the noncommutative Gross-Neveu model.

  2. Light Field Denoising, Light Field Superresolution and Stereo Camera Based Refocussing using a GMM Light Field Patch Prior

    E-Print Network [OSTI]

    Mellor-Crummey, John

    Light Field Denoising, Light Field Superresolution and Stereo Camera Based Refocussing using a GMM Light Field Patch Prior Kaushik Mitra and Ashok Veeraraghavan ECE, Rice University Houston, Tx 77005 Kaushik.Mitra@rice.edu, vashok@rice.edu Abstract With the recent availability of commercial light field

  3. ARC: A compact, high-field, fusion nuclear science facility and demonstration power plant with demountable magnets

    E-Print Network [OSTI]

    Sorbom, B N; Palmer, T R; Mangiarotti, F J; Sierchio, J M; Bonoli, P; Kasten, C; Sutherland, D A; Barnard, H S; Haakonsen, C B; Goh, J; Sung, C; Whyte, D G

    2014-01-01T23:59:59.000Z

    The affordable, robust, compact (ARC) reactor conceptual design study aims to reduce the size, cost, and complexity of a combined fusion nuclear science facility (FNSF) and demonstration fusion Pilot power plant. ARC is a 270 MWe tokamak reactor with a major radius of 3.3 m, a minor radius of 1.1 m, and an on-axis magnetic field of 9.2 T. ARC has rare earth barium copper oxide (REBCO) superconducting toroidal field coils, which have joints to enable disassembly. This allows the vacuum vessel to be replaced quickly, mitigating first wall survivability concerns, and permits a single device to test many vacuum vessel designs and divertor materials. The design point has a plasma fusion gain of Q_p~13.6, yet is fully non-inductive, with a modest bootstrap fraction of only ~63%. Thus ARC offers a high power gain with relatively large external control of the current profile. This highly attractive combination is enabled by the ~23 T peak field on coil with newly available REBCO superconductor technology. External cu...

  4. Junction-based field emission structure for field emission display

    DOE Patents [OSTI]

    Dinh, Long N. (Concord, CA); Balooch, Mehdi (Berkeley, CA); McLean, II, William (Oakland, CA); Schildbach, Marcus A. (Livermore, CA)

    2002-01-01T23:59:59.000Z

    A junction-based field emission display, wherein the junctions are formed by depositing a semiconducting or dielectric, low work function, negative electron affinity (NEA) silicon-based compound film (SBCF) onto a metal or n-type semiconductor substrate. The SBCF can be doped to become a p-type semiconductor. A small forward bias voltage is applied across the junction so that electron transport is from the substrate into the SBCF region. Upon entering into this NEA region, many electrons are released into the vacuum level above the SBCF surface and accelerated toward a positively biased phosphor screen anode, hence lighting up the phosphor screen for display. To turn off, simply switch off the applied potential across the SBCF/substrate. May be used for field emission flat panel displays.

  5. Soil Sample Questionnaire --Field Crops Sample No. Field Identification Field Size acres

    E-Print Network [OSTI]

    Norton, Jay B.

    . Subsoil: (if known) sand gravel clay hardpan lime solid rock 7. Water penetration: rapid moderate slow soil questionnaire on the back of this sheet. Have soil tested at least once every rotation. 2. Sample of the hole and put it in a clean container. Repeat this procedure at 10 or 12 locations in the field. Mix

  6. Field Campaign Guidelines (ARM Climate Research Facility)

    SciTech Connect (OSTI)

    Voyles, JW

    2011-01-17T23:59:59.000Z

    The purpose of this document is to establish a common set of guidelines for the Atmospheric Radiation Measurement (ARM) Climate Research Facility for planning, executing, and closing out field campaigns. The steps that guide individual field campaigns are described in the Field Campaign Tracking database tool and are tailored to meet the scope of each specific field campaign.

  7. An Interactive Visual Analytics Framework for Multi-Field Data in a Geo-Spatial Context

    SciTech Connect (OSTI)

    Zhang, Zhiyuan; Tong, Xiaonan; McDonnell, Kevin T.; Zelenyuk, Alla; Imre, D.; Mueller, Klaus

    2013-04-01T23:59:59.000Z

    Climate research produces a wealth of multivariate data. These data often have a geospatial reference and so it is of interest to show them within their geospatial context. One can consider this configuration as a multi field visualization problem, where the geospace provides the expanse of the field. However, there is a limit on the amount of multivariate information that can be fit within a certain spatial location, and the use of linked multivari ate information displays has previously been devised to bridge this gap. In this paper we focus on the interactions in the geographical display, present an implementation that uses Google Earth, and demonstrate it within a tightly linked parallel coordinates display. Several other visual representations, such as pie and bar charts are integrated into the Google Earth display and can be interactively manipulated. Further, we also demonstrate new brushing and visualization techniques for parallel coordinates, such as fixedwindow brushing and correlationenhanced display. We conceived our system with a team of climate researchers, who already made a few important discov eries using it. This demonstrates our system’s great potential to enable scientific discoveries, possibly also in oth er domains where data have a geospatial reference.

  8. The spinor field theory of the photon

    E-Print Network [OSTI]

    Ruo Peng Wang

    2011-09-18T23:59:59.000Z

    I introduce a spinor field theory for the photon. The three-dimensional vector electromagnetic field and the four-dimensional vector potential are components of this spinor photon field. A spinor equation for the photon field is derived from Maxwell's equations,the relations between the electromagnetic field and the four-dimensional vector potential, and the Lorentz gauge condition. The covariant quantization of free photon field is done, and only transverse photons are obtained. The vacuum energy divergence does not occur in this theory. A covariant "positive frequency" condition is introduced for separating the photon field from its complex conjugate in the presence of the electric current and charge.

  9. Apparatuses and methods for generating electric fields

    DOE Patents [OSTI]

    Scott, Jill R; McJunkin, Timothy R; Tremblay, Paul L

    2013-08-06T23:59:59.000Z

    Apparatuses and methods relating to generating an electric field are disclosed. An electric field generator may include a semiconductive material configured in a physical shape substantially different from a shape of an electric field to be generated thereby. The electric field is generated when a voltage drop exists across the semiconductive material. A method for generating an electric field may include applying a voltage to a shaped semiconductive material to generate a complex, substantially nonlinear electric field. The shape of the complex, substantially nonlinear electric field may be configured for directing charged particles to a desired location. Other apparatuses and methods are disclosed.

  10. The over 20 year operating experience with carbon steel tubings at Abu Attifel Field. Problems and solutions

    SciTech Connect (OSTI)

    Cheldi, T. [ENI-AGIP Div., Milan (Italy); Rumash, K. [AGIP Oil, Tripoli (Libyan Arab Jamahiriya); Bazzoni, B. [Cescor srl, Milan (Italy)

    1999-11-01T23:59:59.000Z

    Abu Attifel onshore oil field (Libya) was discovered in 1968 and put in production in November 1972. The total average production is nowadays about 140,000 BOPD (22,260 m{sup 3}/d) with 46 producing wells. All the production wells were originally completed with carbon steel tubing, although the produced fluids contain CO{sub 2}-4% in the gas phase. After several years of production with minor downhole corrosion problems, several corrosion failures started to occur in the nineties at extremely high corrosion rate. In some cases corrosion attacks occurred although the water cut was negligible (lower than 1%). A detailed corrosion study was initiated to investigate the problem in order to identify the most critical production wells and the priority of intervention for well; this paper reports the corrosion assessment results and the actions undertaken to control the corrosion. A occurred corrosion events is also reported.

  11. Split string field theory II

    E-Print Network [OSTI]

    David J. Gross; Washington Taylor

    2001-06-27T23:59:59.000Z

    We describe the ghost sector of cubic string field theory in terms of degrees of freedom on the two halves of a split string. In particular, we represent a class of pure ghost BRST operators as operators on the space of half-string functionals. These BRST operators were postulated by Rastelli, Sen, and Zwiebach to give a description of cubic string field theory in the closed string vacuum arising from condensation of a D25-brane in the original tachyonic theory. We find a class of solutions for the ghost equations of motion using the pure ghost BRST operators. We find a vanishing action for these solutions, and discuss possible interpretations of this result. The form of the solutions we find in the pure ghost theory suggests an analogous class of solutions in the original theory on the D25-brane with BRST operator Q_B coupling the matter and ghost sectors.

  12. Diffeomorphisms in group field theories

    SciTech Connect (OSTI)

    Baratin, Aristide [Triangle de la Physique, CPHT Ecole Polytechnique, IPhT Saclay, LPT Orsay and Laboratoire de Physique Theorique, CNRS UMR 8627, Universite Paris XI, F-91405 Orsay Cedex (France); Girelli, Florian [School of Physics, University of Sydney, Sydney, New South Wales 2006 (Australia); Oriti, Daniele [Max Planck Institute for Gravitational Physics, Albert Einstein Institute, Am Muehlenberg 1, 14467 Golm (Germany)

    2011-05-15T23:59:59.000Z

    We study the issue of diffeomorphism symmetry in group field theories (GFT), using the noncommutative metric representation introduced by A. Baratin and D. Oriti [Phys. Rev. Lett. 105, 221302 (2010).]. In the colored Boulatov model for 3d gravity, we identify a field (quantum) symmetry which ties together the vertex translation invariance of discrete gravity, the flatness constraint of canonical quantum gravity, and the topological (coarse-graining) identities for the 6j symbols. We also show how, for the GFT graphs dual to manifolds, the invariance of the Feynman amplitudes encodes the discrete residual action of diffeomorphisms in simplicial gravity path integrals. We extend the results to GFT models for higher-dimensional BF theories and discuss various insights that they provide on the GFT formalism itself.

  13. Faddeev-Senjanovic Quantization of SU(n) N=2 Supersymmetric Gauge Field System with Non-Abelian Chern-Simons Topological Term and Its Fractional Spin

    E-Print Network [OSTI]

    Yong-Chang Huang; Qiu-Hong Huo

    2009-01-13T23:59:59.000Z

    Using Faddeev-Senjanovic path integral quantization for constrained Hamilton system, we quantize SU(n) N=2 supersymmetric gauge field system with non-abelian Chern-Simons topological term in 2+1 dimensions, and use consistency of a gauge condition naturally to deduce another gauge condition. Further, we get the generating functional of Green function in phase space, deduce the angular momentum based on the global canonical Noether theorem at quantum level, obtain the fractional spin of this supersymmetric system, and show that the total angular momentum has the orbital angular momentum and spin angular momentum of the non-abelian gauge field. Finally, we find out the anomalous fractional spin and discover that the fractional spin has the contributions of both the group superscript components and the A_0^s (x) charge.

  14. Production Hydraulic Packer Field Test

    SciTech Connect (OSTI)

    Schneller, Tricia; Salas, Jose

    2000-06-30T23:59:59.000Z

    In October 1999, the Rocky Mountain Oilfield Testing Center and Halliburton Energy Services cooperated on a field test of Halliburton's new Production Hydraulic Packer technology on Well 46-TPX-10 at Naval Petroleum Reserve No. 3 near Casper, WY. Performance of the packer was evaluated in set and unset operations. The packer's ability to seal the annulus between the casing and tubing was hydraulically tested and the results were recorded.

  15. Quantum fields with classical perturbations

    SciTech Connect (OSTI)

    Derezi?ski, Jan, E-mail: Jan.Derezinski@fuw.edu.pl [Department of Mathematical Methods in Physics, Faculty of Physics, University of Warsaw, Hoza 74, 00-682 Warszawa (Poland)

    2014-07-15T23:59:59.000Z

    The main purpose of these notes is a review of various models of Quantum Field Theory (QFT) involving quadratic Lagrangians. We discuss scalar and vector bosons, spin 1/2 fermions, both neutral and charged. Beside free theories, we study their interactions with classical perturbations, called, depending on the context, an external linear source, mass-like term, current or electromagnetic potential. The notes may serve as a first introduction to QFT.

  16. Gamma radiation field intensity meter

    DOE Patents [OSTI]

    Thacker, L.H.

    1994-08-16T23:59:59.000Z

    A gamma radiation intensity meter measures dose rate of a radiation field. The gamma radiation intensity meter includes a tritium battery emitting beta rays generating a current which is essentially constant. Dose rate is correlated to an amount of movement of an electroscope element charged by the tritium battery. Ionizing radiation decreases the voltage at the element and causes movement. A bleed resistor is coupled between the electroscope support element or electrode and the ionization chamber wall electrode. 4 figs.

  17. Gamma radiation field intensity meter

    DOE Patents [OSTI]

    Thacker, Louis H. (Knoxville, TN)

    1995-01-01T23:59:59.000Z

    A gamma radiation intensity meter measures dose rate of a radiation field. The gamma radiation intensity meter includes a tritium battery emitting beta rays generating a current which is essentially constant. Dose rate is correlated to an amount of movement of an electroscope element charged by the tritium battery. Ionizing radiation decreases the voltage at the element and causes movement. A bleed resistor is coupled between the electroscope support element or electrode and the ionization chamber wall electrode.

  18. Gamma radiation field intensity meter

    DOE Patents [OSTI]

    Thacker, L.H.

    1995-10-17T23:59:59.000Z

    A gamma radiation intensity meter measures dose rate of a radiation field. The gamma radiation intensity meter includes a tritium battery emitting beta rays generating a current which is essentially constant. Dose rate is correlated to an amount of movement of an electroscope element charged by the tritium battery. Ionizing radiation decreases the voltage at the element and causes movement. A bleed resistor is coupled between the electroscope support element or electrode and the ionization chamber wall electrode. 4 figs.

  19. Gamma radiation field intensity meter

    DOE Patents [OSTI]

    Thacker, Louis H. (Knoxville, TN)

    1994-01-01T23:59:59.000Z

    A gamma radiation intensity meter measures dose rate of a radiation field. The gamma radiation intensity meter includes a tritium battery emitting beta rays generating a current which is essentially constant. Dose rate is correlated to an amount of movement of an electroscope element charged by the tritium battery. Ionizing radiation decreases the voltage at the element and causes movement. A bleed resistor is coupled between the electroscope support element or electrode and the ionization chamber wall electrode.

  20. USING RECENT ADVANCES IN 2D SEISMIC TECHNOLOGY AND SURFACE GEOCHEMISTRY TO ECONOMICALLY REDEVELOP A SHALLOW SHELF CARBONATE RESERVOIR: VERNON FIELD, ISABELLA COUNTY, MI

    SciTech Connect (OSTI)

    James R. Wood; W. Quinlan

    2003-01-01T23:59:59.000Z

    Presented in this quarterly report is the Case History and Well Summary for the Vernon Field demonstration project in Isabella County, Michigan. This new case history and well summary format organizes and presents the technical and historical details of the Vernon Field demonstration, as well as the field demonstration results and the applicability of these results to other demonstration projects. This format could be duplicated for other demonstration projects and will be used on all subsequent field demonstrations as they near completion. Planning for the annual project meeting in Tampa, Florida has begun. This meeting will be held March 7-9, 2003 at the same site as the last three meetings. The goals of this project were to: (1) test the use of multi-lateral wells to recover bypassed hydrocarbons and (2) to access the potential of using surface geochemistry to reduce drilling risk. Two new demonstration wells, the State-Smock and the Bowers 4-25, were drilled to test the Dundee Formation at Vernon Field for bypassed oil. Neither well was commercial, although both produced hydrocarbon shows. An extensive geochemical survey in the vicinity of Vernon Field, covering much of Isabella County, has produced a base map for interpretation of anomalies in Michigan. Several potential new anomalies were discovered that could be further investigated.

  1. Two field matter bounce cosmology

    SciTech Connect (OSTI)

    Cai, Yi-Fu; McDonough, Evan; Duplessis, Francis; Brandenberger, Robert H., E-mail: yifucai@physics.mcgill.ca, E-mail: evanmc@physics.mcgill.ca, E-mail: francis.duplessis@mail.mcgill.ca, E-mail: rhb@hep.physics.mcgill.ca [Department of Physics, McGill University, Montréal, QC H3A 2T8 (Canada)

    2013-10-01T23:59:59.000Z

    We re-examine the non-singular Matter Bounce scenario first developed in [20], which starts with a matter-dominated period of contraction and transitions into an Ekpyrotic phase of contraction. We consider both matter fields, the first of which plays the role of regular matter, and the second of which is responsible for the non-singular bounce. Since the dominant matter field is massive, the induced curvature fluctuations are initially not scale-invariant, whereas the fluctuations of the second scalar field (which are initially entropy fluctuations) are scale-invariant. We study the transfer of the initial entropy perturbations into curvature fluctuations in the matter-dominated phase of contraction and show that the latter become nearly scale invariant on large scales but are blue tilted on small scales. We study the evolution of both curvature and entropy fluctuations through the bounce, and show that both have a scale-invariant spectrum which is blue-tilted on small scales. However, we find that the entropy fluctuations have an amplitude that is much smaller than that of the curvature perturbations, due to gravitational amplification of curvature perturbations during the bounce phase.

  2. Encoding field theories into gravities

    E-Print Network [OSTI]

    Aoki, Sinya; Onogi, Tetsuya

    2015-01-01T23:59:59.000Z

    We propose a method, which encodes the information of a $d$ dimensional quantum field theory into a $d+1$ dimensional gravity in the $1/N$ expansion. We first construct a $d+1$ dimensional field theory from the $d$ dimensional one via the gradient flow equation, whose flow time $t$ represents the energy scale of the system such that $t\\rightarrow 0$ corresponds to the ultra-violet (UV) while $t\\rightarrow\\infty$ to the infra-red (IR). We then define the induced metric from $d+1$ dimensional field operators. We show that the metric defined in this way becomes classical in the large $N$ limit, in a sense that quantum fluctuations of the metric are suppressed as $1/N$ due to the large $N$ factorization property. As a concrete example, we apply our method to the O(N) non-linear $\\sigma$ model in two dimensions. We calculate the induced metric in three dimensions, which is shown to describe De Sitter (dS) or Anti De Sitter (AdS) space in the massless limit, where the mass is dynamically generated in the O(N) non-l...

  3. Field Equations in the Complex Quaternion Spaces

    E-Print Network [OSTI]

    Zi-Hua Weng

    2015-04-06T23:59:59.000Z

    The paper aims to adopt the complex quaternion and octonion to formulate the field equations for electromagnetic and gravitational fields. Applying the octonionic representation enables one single definition to combine some physics contents of two fields, which were considered to be independent of each other in the past. J. C. Maxwell applied simultaneously the vector terminology and the quaternion analysis to depict the electromagnetic theory. This method edified the paper to introduce the quaternion and octonion spaces into the field theory, in order to describe the physical feature of electromagnetic and gravitational fields, while their coordinates are able to be the complex number. The octonion space can be separated into two subspaces, the quaternion space and the S-quaternion space. In the quaternion space, it is able to infer the field potential, field strength, field source, field equations, and so forth, in the gravitational field. In the S-quaternion space, it is able to deduce the field potential, field strength, field source, and so forth, in the electromagnetic field. The results reveal that the quaternion space is appropriate to describe the gravitational features; meanwhile the S-quaternion space is proper to depict the electromagnetic features.

  4. SnTe field effect transistors and the anomalous electrical response of structural phase transition

    SciTech Connect (OSTI)

    Li, Haitao, E-mail: haitao.li@nist.gov; Zhu, Hao; Yuan, Hui; Li, Qiliang, E-mail: qli6@gmu.edu [Department of Electrical and Computer Engineering, George Mason University, Fairfax, Virginia 22030 (United States); Semiconductor and Dimensional Metrology Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899 (United States); You, Lin; Kopanski, Joseph J. [Department of Electrical and Computer Engineering, George Mason University, Fairfax, Virginia 22030 (United States); Richter, Curt A. [Semiconductor and Dimensional Metrology Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899 (United States); Zhao, Erhai [School of Physics, Astronomy, and Computational Sciences, George Mason University, Fairfax, Virginia 22030 (United States)

    2014-07-07T23:59:59.000Z

    SnTe is a conventional thermoelectric material and has been newly found to be a topological crystalline insulator. In this work, back-gate SnTe field-effect transistors have been fabricated and fully characterized. The devices exhibit n-type transistor behaviors with excellent current-voltage characteristics and large on/off ratio (>10{sup 6}). The device threshold voltage, conductance, mobility, and subthreshold swing have been studied and compared at different temperatures. It is found that the subthreshold swings as a function of temperature have an apparent response to the SnTe phase transition between cubic and rhombohedral structures at 110?K. The abnormal and rapid increase in subthreshold swing around the phase transition temperature may be due to the soft phonon/structure change which causes the large increase in SnTe dielectric constant. Such an interesting and remarkable electrical response to phase transition at different temperatures makes the small SnTe transistor attractive for various electronic devices.

  5. Efficient Concomitant and Remanence Field Artifact Reduction in Ultra-Low-Field MRI Using a

    E-Print Network [OSTI]

    Efficient Concomitant and Remanence Field Artifact Reduction in Ultra-Low-Field MRI Using: For ultra-low-field MRI, the spatial-encoding mag- netic fields generated by gradient coils can have strong to pre-polarize magnetization can improve the signal-to-noise ratio of ultra- low-field MRI. Yet

  6. Primordial Magnetic Fields in False Vacuum Inflation

    E-Print Network [OSTI]

    A. C. Davis; K. Dimopoulos

    1996-10-25T23:59:59.000Z

    We show that, during false vacuum inflation, a primordial magnetic field can be created, sufficiently strong to seed the galactic dynamo and generate the observed galactic magnetic fields. Considering the inflaton dominated regime, our field is produced by the Higgs-field gradients, resulting from a grand unified phase transition. The evolution of the field is followed from its creation through to the epoch of structure formation, subject to the relevant constraints. We find that it is possible to create a magnetic field of sufficient magnitude, provided the phase transition occurs during the final 5 e-foldings of the inflationary period.

  7. Bootstrapping Fuzzy Scalar Field Theory

    E-Print Network [OSTI]

    Christian Saemann

    2015-04-13T23:59:59.000Z

    We describe a new way of rewriting the partition function of scalar field theory on fuzzy complex projective spaces as a solvable multitrace matrix model. This model is given as a perturbative high-temperature expansion. At each order, we present an explicit analytic expression for most of the arising terms; the remaining terms are computed explicitly up to fourth order. The method presented here can be applied to any model of hermitian matrices. Our results confirm constraints previously derived for the multitrace matrix model by Polychronakos. A further implicit expectation about the shape of the multitrace terms is however shown not to be true.

  8. Vector field theories in cosmology

    E-Print Network [OSTI]

    A. Tartaglia; N. Radicella

    2007-08-05T23:59:59.000Z

    Recently proposed theories based on the cosmic presence of a vectorial field are compared and contrasted. In particular the so called Einstein aether theory is discussed in parallel with a recent proposal of a strained space-time theory (Cosmic Defect theory). We show that the latter fits reasonably well the cosmic observed data with only one, or at most two, adjustable parameters, whilst other vector theories use much more. The Newtonian limits are also compared. Finally we show that the CD theory may be considered as a special case of the aether theories, corresponding to a more compact and consistent paradigm.

  9. Paramagnetic resonance at low fields

    E-Print Network [OSTI]

    Becker, Stewart

    1954-01-01T23:59:59.000Z

    ....................................... 88 TABLE OF CONTENTS LIST OF FIGURES FIGURE PAGE II-l. Apparatus for Observing Paramagnetic Resonance . . . 5 II-2. Splitting of the Energy Level in the Presence of a Steady Magnetic Field Ho . . . .............. 9 II-3. Molecular Structure... Th experiences a torque expressed by A A A . . L - X H (2) Newton's Law for rotational motion is * dP L ? XT ? (3)dt A combination of equations (l), (2) and (3 ) gives 9 5 k A which is the equation of motion for a vector P of constant...

  10. Field Offices | Department of Energy

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed off Energy.gov. Are you sure you want toworldPowerHome |CookingFAQsFacilityFederal RegulationsField

  11. ARM - Historical Field Campaign Statistics

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006Datastreamstwrcam40m DocumentationJanuary 9, 2009 [Events, FeatureListGeneral ChangesField Campaign

  12. Pulse homodyne field disturbance sensor

    DOE Patents [OSTI]

    McEwan, T.E.

    1997-10-28T23:59:59.000Z

    A field disturbance sensor operates with relatively low power, provides an adjustable operating range, is not hypersensitive at close range, allows co-location of multiple sensors, and is inexpensive to manufacture. The sensor includes a transmitter that transmits a sequence of transmitted bursts of electromagnetic energy. The transmitter frequency is modulated at an intermediate frequency. The sequence of bursts has a burst repetition rate, and each burst has a burst width and comprises a number of cycles at a transmitter frequency. The sensor includes a receiver which receives electromagnetic energy at the transmitter frequency, and includes a mixer which mixes a transmitted burst with reflections of the same transmitted burst to produce an intermediate frequency signal. Circuitry, responsive to the intermediate frequency signal indicates disturbances in the sensor field. Because the mixer mixes the transmitted burst with reflections of the transmitted burst, the burst width defines the sensor range. The burst repetition rate is randomly or pseudo-randomly modulated so that bursts in the sequence of bursts have a phase which varies. A second range-defining mode transmits two radio frequency bursts, where the time spacing between the bursts defines the maximum range divided by two. 12 figs.

  13. Pulse homodyne field disturbance sensor

    DOE Patents [OSTI]

    McEwan, Thomas E. (Livermore, CA)

    1997-01-01T23:59:59.000Z

    A field disturbance sensor operates with relatively low power, provides an adjustable operating range, is not hypersensitive at close range, allows co-location of multiple sensors, and is inexpensive to manufacture. The sensor includes a transmitter that transmits a sequence of transmitted bursts of electromagnetic energy. The transmitter frequency is modulated at an intermediate frequency. The sequence of bursts has a burst repetition rate, and each burst has a burst width and comprises a number of cycles at a transmitter frequency. The sensor includes a receiver which receives electromagnetic energy at the transmitter frequency, and includes a mixer which mixes a transmitted burst with reflections of the same transmitted burst to produce an intermediate frequency signal. Circuitry, responsive to the intermediate frequency signal indicates disturbances in the sensor field. Because the mixer mixes the transmitted burst with reflections of the transmitted burst, the burst width defines the sensor range. The burst repetition rate is randomly or pseudo-randomly modulated so that bursts in the sequence of bursts have a phase which varies. A second range-defining mode transmits two radio frequency bursts, where the time spacing between the bursts defines the maximum range divided by two.

  14. Numerical calculations of ultrasonic fields I: transducer near fields

    SciTech Connect (OSTI)

    Johnson, J.A.

    1982-03-01T23:59:59.000Z

    A computer code for the calculation of linear acoustic wave propagation in homogeneous fluid and solid materials has been derived from the thermal-hydraulics code STEALTH. The code uses finite-difference techniques in a two-dimensional mesh made up of arbitrarily shaped quadrilaterals. Problems with two-dimensional plane strain or two-dimensional axial symmetries can be solved. Free, fixed, or stressed boundaries can be used. Transducers can be modeled by time dependent boundary conditions or by moving pistons. This paper gives a brief description of the method and shows the results of the calculation of the near fields of circular flat and focused transducers. These results agree with analytic theory along the axis of symmetry and with other codes that use a Huygens reconstruction technique off-axis.

  15. Numerical calculations of ultrasonic fields I: transducer near fields

    SciTech Connect (OSTI)

    Johnson, J.A.

    1982-04-01T23:59:59.000Z

    A computer code for the calculation of linear acoustic wave propagation in homogeneous fluid and solid materials has been derived from the thermal-hydraulics code STEALTH. The code uses finite-difference techniques in a two dimensional mesh made up of arbitrarily shaped quadrilaterals. Problems with two dimensional plane strain or two dimensional axial symmetries can be solved. Free, fixed or stressed boundaries can be used. Transducers can be modeled by time dependent boundary conditions or by moving pistons. A brief description of the method is given and the results of the calculation of the near fields of circular flat and focused transducers are shown. These results agree with analytic theory along the axis of symmetry and with other codes that use a Huygens' reconstruction technique off axis.

  16. HE0241-0155 - Evidence for a large scale homogeneous field in a highly magnetic white dwarf

    E-Print Network [OSTI]

    Dieter Reimers; Stefan Jordan; Norbert Christlieb

    2003-11-04T23:59:59.000Z

    In the course of the Hamburg/ESO survey we have discovered a white dwarf whose spectrum exhibits many similarities with the prototype of magnetic white dwarfs Grw+70$^{\\circ}$8247. In particular several stationary line components indicative for magnetic fields between about 150 and 400 MG are found in both objects. However, the features between 5000 and 5500 \\AA in the spectrum of HE0241-0155 cannot be explained by stationary line components and demand a relatively homogeneous magnetic field with clustering around 200 MG. For this reason a pure dipole model failed to reproduce this spectral region.An offset-dipole configuration led to some improvement in the fit but a good agreement was only possible for a geometry -- described by an expansion into spherical harmonics -- where most of the surface is covered with magnetic field strengths strongly clustered around 200 MG. This may indicate the presence of a large magnetic spot whose presence could be tested with time resolved spectro-polarimetry.

  17. Discover this place.Discover this place. Shape your worldShape your world

    E-Print Network [OSTI]

    Bordenstein, Seth

    Council Standards for reporting MBA employment statistics. 1 www.RecruitAtOwen.com Visit our website

  18. High field solenoids for muon cooling

    E-Print Network [OSTI]

    Green, M.A.

    2011-01-01T23:59:59.000Z

    Field Solenoids for Muon Cooling M. A. Green a , Y. EyssaField Solenoids for Muon Cooling · M. A. Green a, Y. EyssaABSTRA CT The proposed cooling system for the muon collider

  19. Expanding and Collapsing Scalar Field Thin Shell

    E-Print Network [OSTI]

    M. Sharif; G. Abbas

    2012-08-27T23:59:59.000Z

    This paper deals with the dynamics of scalar field thin shell in the Reissner-Nordstr$\\ddot{o}$m geometry. The Israel junction conditions between Reissner-Nordstr$\\ddot{o}$m spacetimes are derived, which lead to the equation of motion of scalar field shell and Klien-Gordon equation. These equations are solved numerically by taking scalar field model with the quadratic scalar potential. It is found that solution represents the expanding and collapsing scalar field shell. For the better understanding of this problem, we investigate the case of massless scalar field (by taking the scalar field potential zero). Also, we evaluate the scalar field potential when $p$ is an explicit function of $R$. We conclude that both massless as well as massive scalar field shell can expand to infinity at constant rate or collapse to zero size forming a curvature singularity or bounce under suitable conditions.

  20. Functional Integration for Quantum Field Theory

    E-Print Network [OSTI]

    J. LaChapelle

    2006-10-16T23:59:59.000Z

    The functional integration scheme for path integrals advanced by Cartier and DeWitt-Morette is extended to the case of fields. The extended scheme is then applied to quantum field theory. Several aspects of the construction are discussed.

  1. Development of optical field emitter arrays

    E-Print Network [OSTI]

    Yang, Yujia, S.M. Massachusetts Institute of Technology

    2013-01-01T23:59:59.000Z

    Optical field emitters are electron emission sources actuated by incident light. Optically actuated field emitters may produce ultrafast pulses of electrons when excited by ultrafast optical pulses, thus making them of ...

  2. 10 Ways to "See" the Electric Field

    Broader source: Energy.gov [DOE]

    How can you demonstrate the electric field if it's invisible? This video shows you 10 activities and experiments that help to teach about the electric field using various apparatuses, such as a plasma ball or a Van de Graaff generator.

  3. Frozen ghosts in thermal gauge field theory

    E-Print Network [OSTI]

    P. V. Landshoff; A. Rebhan

    2009-03-10T23:59:59.000Z

    We review an alternative formulation of gauge field theories at finite temperature where unphysical degrees of freedom of gauge fields and the Faddeev-Popov ghosts are kept at zero temperature.

  4. A Review of Noncommutative Field Theories

    E-Print Network [OSTI]

    Victor O. Rivelles

    2011-01-27T23:59:59.000Z

    We present a brief review of selected topics in noncommutative field theories ranging from its revival in string theory, its influence on quantum field theories, its possible experimental signatures and ending with some applications in gravity and emergent gravity.

  5. Matter Field, Dark Matter and Dark Energy

    E-Print Network [OSTI]

    Masayasu Tsuge

    2009-03-24T23:59:59.000Z

    A model concerning particle theory and cosmology is proposed. Matter field, dark matter and dark energy are created by an energy flow from space to primordial matter fields at the phase transition in the early universe.

  6. HIGH-FIELD SUPERCONDUCTING ACCELERATOR MAGNETS

    E-Print Network [OSTI]

    Taylor, C.

    2011-01-01T23:59:59.000Z

    D. C. 'Niobium-Titanium Superconducting Material s ', in S.14, 1982 HIGH-FIELD SUPERCONDUCTING ACCELERATOR MAGNETS C.SUMAG-68 HIGH-FIELD SUPERCONDUCTING ACCELERATOR MAGNETS* C.

  7. Review of Vedder pool development, Kern River field, Kern County, California

    SciTech Connect (OSTI)

    Condon, M.W.

    1986-07-01T23:59:59.000Z

    The Kern River field is located on the east side of the San Joaquin Valley, just north of Bakersfield, California. Since its discovery in 1899, the field has produced over 1 billion bbl of heavy oil from the Kern River Formation. It was not until 1981 that light oil was discovered from a deeper zone, the Vedder formation. The discovery well, Getty Oil Company WD-1 Apollo, encountered 40 ft of net oil sand within the third Vedder sand and was completed on pump for an initial production of 100 bbl of 40.5/sup 0/ API oil and 200 MCDGD. As suggested by its name, WD-1 Apollo was drilled as a water-water injection wells. However, a detailed subsurface study of the field suggested the possibility of a trap within the Vedder formation. The originally proposed location of WD-1 Apollo was then moved to test the proposal. The trap is a series of intersecting, up-to-the-basin normal faults trending west and northwest. These faults have dropped impermeable silty zones within the Vedder formation against the productive Vedder sands. Since the completion of WD-1 Apollo, nine other wells have been drilled within this pool, extending production over 1 mi to the southeast. One of the first of the extension wells, Getty Oil Company 73X Central Point, located approximately 600 ft southeast of WD-1 Apollo, established production from the second Vedder sand. This well was completed flowing 300 b/d of 32/sup 0/ API oil and 1000 MCFGD through a 16/64-in. choke. Through December 1985, Texaco (Getty Oil) produced more than 250,000 bbl of oil and 350,000 mcf of gas combined from the second and third Vedder sands from 2.5 net wells. Although attempts to find other such Vedder pools have met with limited success, there is still the potential for many to exist, given proper structural closure, as seen in the Apollo pool.

  8. Irreducibility of the set of field operators in Noncommutative Quantum Field Theory

    E-Print Network [OSTI]

    M. N. Mnatsakanova; Yu. S. Vernov

    2012-09-02T23:59:59.000Z

    Irreducibility of the set of quantum field operators has been proved in noncommutative quantum field theory in the general case when time does not commute with spatial variables.

  9. Turbulence and Magnetic Fields in Clouds

    E-Print Network [OSTI]

    Shantanu Basu

    2004-11-15T23:59:59.000Z

    We discuss several categories of models which may explain the IMF, including the possible role of turbulence and magnetic fields.

  10. Field Calibration Facilities for Environmental Measurement of...

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

    the facilities. Field Calibration Facilities for Environmental Measurement of Radium, Thorium, and Potassium (October 2013) More Documents & Publications Calibration Model...

  11. Coulomb interactions within Halo Effective Field Theory

    E-Print Network [OSTI]

    Renato Higa

    2007-11-30T23:59:59.000Z

    I present preliminary results of effective field theory applied to nuclear cluster systems, where Coulomb interactions play a significant role.

  12. Translational Invariance and Noncommutative Field Theories

    E-Print Network [OSTI]

    Orfeu Bertolami

    2004-02-02T23:59:59.000Z

    Implications of noncommutative field theories with commutator of the coordinates of the form $[x^{\\mu},x^{\

  13. In situ vitrification application to buried waste: Final report of intermediate field tests at Idaho National Engineering Laboratory

    SciTech Connect (OSTI)

    Callow, R.A.; Weidner, J.R.; Loehr, C.A.; Bates, S.O. (EG and G Idaho, Inc., Idaho Falls, ID (United States)); Thompson, L.E.; McGrail, B.P. (Pacific Northwest Lab., Richland, WA (United States))

    1991-08-01T23:59:59.000Z

    This report describes two in situ vitrification field tests conducted on simulated buried waste pits during June and July 1990 at the Idaho National Engineering Laboratory. In situ vitrification, an emerging technology for in place conversion of contaminated soils into a durable glass and crystalline waste form, is being investigated as a potential remediation technology for buried waste. The overall objective of the two tests was to access the general suitability of the process to remediate waste structures representative of buried waste found at Idaho National Engineering Laboratory. In particular, these tests, as part of a treatability study, were designed to provide essential information on the field performance of the process under conditions of significant combustible and metal wastes and to test a newly developed electrode feed technology. The tests were successfully completed, and the electrode feed technology successfully processed the high metal content waste. Test results indicate the process is a feasible technology for application to buried waste. 33 refs., 109 figs., 39 tabs.

  14. FIELD EVALUATION OF THE MYRTLE CREEK ADVANCED

    E-Print Network [OSTI]

    Bertini, Robert L.

    FIELD EVALUATION OF THE MYRTLE CREEK ADVANCED CURVE WARNING SYSTEM Final Report SPR 352 #12;#12;FIELD EVALUATION OF THE MYRTLE CREEK ADVANCED CURVE WARNING SYSTEM SPR 352 Final Report by Robert L's Catalog No. 5. Report Date June 2006 4. Title and Subtitle Field Evaluation of the Myrtle Creek Advanced

  15. DC-based magnetic field controller

    DOE Patents [OSTI]

    Kotter, D.K.; Rankin, R.A.; Morgan, J.P.

    1994-05-31T23:59:59.000Z

    A magnetic field controller is described for laboratory devices and in particular to dc operated magnetic field controllers for mass spectrometers, comprising a dc power supply in combination with improvements to a Hall probe subsystem, display subsystem, preamplifier, field control subsystem, and an output stage. 1 fig.

  16. Near-field single molecule spectroscopy

    SciTech Connect (OSTI)

    Xie, X.S.; Dunn, R.C.

    1995-02-01T23:59:59.000Z

    The high spatial resolution and sensitivity of near-field fluorescence microscopy allows one to study spectroscopic and dynamical properties of individual molecules at room temperature. Time-resolved experiments which probe the dynamical behavior of single molecules are discussed. Ground rules for applying near-field spectroscopy and the effect of the aluminum coated near-field probe on spectroscopic measurements are presented.

  17. CORONAL MAGNETIC FIELD MEASUREMENTS THROUGH GYRORESONANCE EMISSION

    E-Print Network [OSTI]

    White, Stephen

    Chapter 5 CORONAL MAGNETIC FIELD MEASUREMENTS THROUGH GYRORESONANCE EMISSION Stephen M. White This article reviews the use of gyroresonance emission at radio wavelengths to measure coronal magnetic fields. Keywords: Sun, solar corona, solar magnetic fields, solar radio emission Introduction Since the realization

  18. DC-based magnetic field controller

    DOE Patents [OSTI]

    Kotter, Dale K. (Shelley, ID); Rankin, Richard A. (Ammon, ID); Morgan, John P,. (Idaho Falls, ID)

    1994-01-01T23:59:59.000Z

    A magnetic field controller for laboratory devices and in particular to dc operated magnetic field controllers for mass spectrometers, comprising a dc power supply in combination with improvements to a hall probe subsystem, display subsystem, preamplifier, field control subsystem, and an output stage.

  19. Sphere Light Field Rendering Zigang Wang1

    E-Print Network [OSTI]

    Sphere Light Field Rendering Zigang Wang1 and Zhengrong Liang1,2 Departments of Radiology1 and Computer Science2 , State University of New York, Stony Brook, NY 11794, USA ABSTRACT Light field algorithm is one of the most famous image-based rendering techniques. In this paper, an improved light field

  20. Quantum Field Theory and Representation Theory

    E-Print Network [OSTI]

    Woit, Peter

    Quantum Field Theory and Representation Theory Peter Woit woit@math.columbia.edu Department of Mathematics Columbia University Quantum Field Theory and Representation Theory ­ p.1 #12;Outline of the talk · Quantum Mechanics and Representation Theory: Some History Quantum Field Theory and Representation Theory

  1. Field Performance of Heat Pump Water Heaters in the Northeast, Massachusetts and Rhode Island (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2013-12-01T23:59:59.000Z

    Heat pump water heaters (HPWHs) are finally entering the mainstream residential water heater market. Potential catalysts are increased consumer demand for higher energy efficiency electric water heating and a new Federal water heating standard that effectively mandates use of HPWHs for electric storage water heaters with nominal capacities greater than 55 gallons. When compared to electric resistance water heating, the energy and cost savings potential of HPWHs is tremendous. Converting all electric resistance water heaters to HPWHs could save American consumers 7.8 billion dollars annually ($182 per household) in water heating operating costs and cut annual residential source energy consumption for water heating by 0.70 quads. Steven Winter Associates, Inc. embarked on one of the first in situ studies of these newly released HPWH products through a partnership with two sponsoring electric utility companies, National Grid and NSTAR, and one sponsoring energy efficiency service program administrator, Cape Light Compact. Recent laboratory studies have measured performance of HPWHs under various operating conditions, but publicly available field studies have not been as available. This evaluation attempts to provide publicly available field data on new HPWHs by monitoring the performance of three recently released products (General Electric GeoSpring, A.O. Smith Voltex, and Stiebel Eltron Accelera 300). Fourteen HPWHs were installed in Massachusetts and Rhode Island and monitored for over a year. Of the 14 units, ten were General Electric models (50 gallon units), two were Stiebel Eltron models (80 gallon units), and two were A.O. Smith models (one 60-gallon and one 80-gallon unit).

  2. Oyo-first field Deepwater Nigeria?

    SciTech Connect (OSTI)

    Lilletveit, R.; Nelson, L. [The Statoil and BP Alliance, Stavanger (Norway); Osahon, G. [Allied Energy Resources (Nig) Ltd., Lagos (Nigeria)

    1996-08-01T23:59:59.000Z

    The Oyo-1 well was drilled in 3Q95 in OPL 210. The partners in the block are Allied Energy (Operator) and the Statoil and BP Alliance. This well was the first well drilled in Deepwater Nigeria and is a reported hydrocarbon discovery. Although the well was within the Niger Delta depositional system, the deepwater play types drilled were quite different than anything previously tested on the Nigerian shelf or onshore. One year on, some of the questions to be asked are: (1) What did Oyo-1 discover? (2) What has been done to establish the commerciality, or otherwise, of the hydrocarbon pools encountered? (3) What impact does this discovery have on other prospects identified in the deepwater area? The answer to these questions will help to identify whether a new hydrocarbon province in the deepwater Nigeria area can be developed, or not.

  3. Superconnections and the Higgs Field

    E-Print Network [OSTI]

    G. Roepstorff

    1998-04-09T23:59:59.000Z

    Within the mathematical framework of Quillen, one interprets the Higgs field as part of the superconnection on a superbundle. We propose to take as superbundle the exterior algebra obtained from a Hermitian bundle with structure group U(n). Spontaneous symmetry breaking appears as a consequence of a non-vanishing scalar curvature. The U(1) Higgs model reformulates the Ginzburg-Landau theory, while the U(2) model relates to the electroweak theory with the relation $g^2=3g4^2$ for the gauge coupling constants, the formula $\\sin^2\\theta=1/4$ for the Weinberg angle, and the ratio $ m_W^2 : m_Z^2 : m_H^2 = 3 : 4 : 12 $ for the masses (squared) of the W, Z, and Higgs boson (at tree level).

  4. Superconnections and the Higgs Field

    E-Print Network [OSTI]

    Roepstorff, G

    1999-01-01T23:59:59.000Z

    Within the mathematical framework of Quillen, one interprets the Higgs field as part of the superconnection on a superbundle. We propose to take as superbundle the exterior algebra obtained from a Hermitian bundle with structure group U(n). Spontaneous symmetry breaking appears as a consequence of a non-vanishing scalar curvature. The U(1) Higgs model reformulates the Ginzburg-Landau theory, while the U(2) model relates to the electro-weak theory with the relation $g^2=3g4^2$ for the gauge coupling constants, the formula $ m_W^2 : m_Z^2 : m_H^2 = 3 : 4 : 12 $ for the masses (squared) of the W, Z, and Higgs boson (at tree level).

  5. Continuous profiling of magnetotelluric fields

    SciTech Connect (OSTI)

    Verdin, C.T.

    1991-05-01T23:59:59.000Z

    The magnetotelluric (MT) method of mapping ground electrical conductivity is traditionally based on measurement of the surface impedance at widely spaced stations to infer models of the subsurface through a suitable pseudo 1-D inverse or with linearized least-squares inversion for 2- or 3-D geoelectric media. It is well known that small near-surface inhomogeneities can produce spatial discontinuities in the measured electric fields over a wide frequency range and may consequently bias the impedance on a very local scale. Inadequate station spacing effectively aliases the electric field measurements and results in distortions that cannot be removed in subsequent processing or modelling. In order to fully exploit the benefits of magnetotellurics in complex geological environments, closely spaced measurements must be used routinely. This thesis entertains an analysis of MT data taken along continuous profiles and is a first step that will allow more encompassing 2-D sampling techniques to become viable in the years to come. The developments presented here are to a large extent motivated by the physical insight gained from low-contrast solutions to the forward MT problem. These solutions describe the relationship between a perturbation in the electrical conductivity of the subsurface and the ensuing perturbation of the MT response as the output of a linear system. Albeit strictly accurate in a limited subset of practical exploration problems, the linearized solutions allow one to pursue a model independent study of the response characteristics of MT data. In fact, these solutions yield simple expressions for 1-,2-, and 3-D resistivity models which are here examined in progressive sequence.

  6. Graphene Nanoribbon in Sharply Localized Magnetic Fields

    E-Print Network [OSTI]

    Abdulaziz D. Alhaidari; Hocine Bahlouli; Abderrahim El Mouhafid; Ahmed Jellal

    2013-03-20T23:59:59.000Z

    We study the effect of a sharply localized magnetic field on the electron transport in a strip (ribbon) of graphene sheet, which allows to give results for the transmission and reflection probability through magnetic barriers. The magnetic field is taken as a single and double delta type localized functions, which are treated later as the zero width limit of gaussian fields. For both field configurations, we evaluate analytically and numerically their transmission and reflection coefficients. The possibility of spacial confinement due to the inhomogeneous field configuration is also investigated.

  7. A Naturally Renormalized Quantum Field Theory

    E-Print Network [OSTI]

    S. Rouhani; M. V. Takook

    2006-07-07T23:59:59.000Z

    It was shown that quantum metric fluctuations smear out the singularities of Green's functions on the light cone [1], but it does not remove other ultraviolet divergences of quantum field theory. We have proved that the quantum field theory in Krein space, {\\it i.e.} indefinite metric quantization, removes all divergences of quantum field theory with exception of the light cone singularity [2,3]. In this paper, it is discussed that the combination of quantum field theory in Krein space together with consideration of quantum metric fluctuations, results in quantum field theory without any divergences.

  8. Quadratic $?'$-Corrections to Heterotic Double Field Theory

    E-Print Network [OSTI]

    Kanghoon Lee

    2015-04-01T23:59:59.000Z

    We investigate $\\alpha'$-corrections of heterotic double field theory up to quadratic order in the language of supersymmetric O(D,D+dim G) gauged double field theory. After introducing double-vielbein formalism with a parametrization which reproduces heterotic supergravity, we show that supersymmetry for heterotic double field theory up to leading order $\\alpha'$-correction is obtained from supersymmetric gauged double field theory. We discuss the necessary modifications of the symmetries defined in supersymmetric gauged double field theory. Further, we construct supersymmetric completion at quadratic order in $\\alpha'$.

  9. Modified Ostrogradski formulation of field theory

    E-Print Network [OSTI]

    M. Leclerc

    2007-02-27T23:59:59.000Z

    We present a method for the Hamiltonian formulation of field theories that are based on Lagrangians containing second derivatives. The new feature of our formalism is that all four partial derivatives of the field variables are initially considered as independent fields, in contrast to the conventional Ostrogradski method, where only the velocity is turned into an independent field variable. The consistency of the formalism is demonstrated by simple unconstrained and constrained second order scalar field theories. Its application to General Relativity is briefly outlined.

  10. Invariants for Tendex and Vortex Fields

    E-Print Network [OSTI]

    Kenneth A. Dennison; Thomas W. Baumgarte

    2012-08-06T23:59:59.000Z

    Tendex and vortex fields, defined by the eigenvectors and eigenvalues of the electric and magnetic parts of the Weyl curvature tensor, form the basis of a recently developed approach to visualizing spacetime curvature. In analogy to electric and magnetic fields, these fields are coordinate-dependent. However, in a further analogy, we can form invariants from the tendex and vortex fields that are invariant under coordinate transformations, just as certain combinations of the electric and magnetic fields are invariant under coordinate transformations. We derive these invariants, and provide a simple, analytical demonstration for non-spherically symmetric slices of a Schwarzschild spacetime.

  11. Magnetostriction of field-structured magnetoelastomers.

    SciTech Connect (OSTI)

    Gulley, Gerald L. (Dominican University, River Forest, IL); Read, Douglas H.; Martin, James Ellis; Huber, Dale L.; Anderson, Robert Alan; Frankamp, Benjamin L.

    2005-12-01T23:59:59.000Z

    Field-structured magnetic particle composites are an important new class of materials that have great potential as both sensors and actuators. These materials are synthesized by suspending magnetic particles in a polymeric resin and subjecting these to magnetic fields while the resin polymerizes. If a simple uniaxial magnetic field is used, the particles will form chains, yielding composites whose magnetic susceptibility is enhanced along a single direction. A biaxial magnetic field, comprised of two orthogonal ac fields, forms particle sheets, yielding composites whose magnetic susceptibility is enhanced along two principal directions. A balanced triaxial magnetic field can be used to enhance the susceptibility in all directions, and biased heterodyned triaxial magnetic fields are especially effective for producing composites with a greatly enhanced susceptibility along a single axis. Magnetostriction is quadratic in the susceptibility, so increasing the composite susceptibility is important to developing actuators that function well at modest fields. To investigate magnetostriction in these field-structured composites we have constructed a sensitive, constant-stress apparatus capable of 1 ppm strain resolution. The sample geometry is designed to minimize demagnetizing field effects. With this apparatus we have demonstrated field-structured composites with nearly 10,000 ppm strain.

  12. Eddy-current-induced multipole field calculations.

    SciTech Connect (OSTI)

    Sereno, N. S.; Kim, S. H.

    2003-10-15T23:59:59.000Z

    Time-varying magnetic fields of magnets in booster accelerators induce substantial eddy currents in the vacuum chambers. The eddy currents in turn act to produce various multipole fields that act on the beam. These fields must be taken into account when doing a lattice design. In the APS booster, the relatively long dipole magnets (3 meters) are linearly ramped to accelerate the injected 325 MeV beam to 7 GeV. Substantial dipole and sextupole fields are generated in the elliptical vacuum chamber from the induced eddy currents. In this note, formulas for the induced dipole and sextupole fields are derived for elliptical and rectangular vacuum chambers for a time-varying dipole field. A discussion is given on how to generalize this derivation method to include eddy-current-induced multipole fields from higher multipole magnets (quadrupole, sextupole, etc.). Finally, transient effects are considered.

  13. Exterior Differential Systems for Field Theories

    E-Print Network [OSTI]

    Frank B. Estabrook

    2015-02-24T23:59:59.000Z

    Exterior Differential Systems (EDS) and Cartan forms, set in the state space of field variables taken together with four space-time variables, are formulated for classical gauge theories of Maxwell and SU(2) Yang-Mills fields minimally coupled to Dirac spinor multiplets. Cartan character tables are calculated, showing whether the EDS, and so the Euler-Lagrange partial differential equations, is well-posed. The first theory, with 22 dimensional state space (10 Maxwell field and potential components and 8 components of a Dirac field), anticipates QED. In the second, non-Abelian, case (30 Yang-Mills field components and 16 Dirac), only if three additional "ghost" fields are included (15 more scalar variables) is a well-posed EDS found. This classical formulation anticipates the need for introduction of Fadeev-Popov ghost fields in the quantum standard model.

  14. Generation of the magnetic field in jets

    E-Print Network [OSTI]

    V. Urpin

    2006-05-22T23:59:59.000Z

    We consider dynamo action under the combined influence of turbulence and large-scale shear in sheared jets. Shear can stretch turbulent magnetic field lines in such a way that even turbulent motions showing mirror symmetry become suitable for generation of a large-scale magnetic field. We derive the integral induction equation governing the behaviour of the mean field in jets. The main result is that sheared jets may generate a large-scale magnetic field if shear is sufficiently strong. The generated mean field is mainly concentrated in a magnetic sheath surrounding the central region of a jet, and it exhibits sign reversals in the direction of the jet axis. Typically, the magnetic field in a sheath is dominated by the component along the jet that can reach equipartition with the kinetic energy of particles, The field in the central region of jets has a more disordered structure.

  15. Tensor gauge field localization in branes

    SciTech Connect (OSTI)

    Tahim, M. O. [Departamento de Fisica, Universidade Federal do Ceara, C.P. 6030, 60455-760 Fortaleza, Ceara (Brazil); Departamento de Ciencias da Natureza, Faculdade de Ciencias, Educacao e Letras do Sertao Central (FECLESC), Universidade Estadual do Ceara, 63900-000 Quixada, Ceara (Brazil); Cruz, W. T. [Departamento de Fisica, Universidade Federal do Ceara, C.P. 6030, 60455-760 Fortaleza, Ceara (Brazil); Centro Federal de Educacao Tecnologica do Ceara (CEFETCE), Unidade Descentralizada de Juazeiro do Norte, 63040-000 Juazeiro do Norte, Ceara (Brazil); Almeida, C. A. S. [Departamento de Fisica, Universidade Federal do Ceara, C.P. 6030, 60455-760 Fortaleza, Ceara (Brazil)

    2009-04-15T23:59:59.000Z

    In this work we study localization of a Kalb-Ramond tensorial gauge field on a membrane described by real scalar fields. The membrane is embedded in an AdS-type five-dimensional bulk space, which mimics a Randall-Sundrum scenario. First, we consider a membrane described by only a single real scalar field. In that scenario we find that there is no localized tensorial zero mode. When we take into account branes described by two real scalar fields with internal structures, we obtain again a nonlocalized zero mode for a Kalb-Ramond tensorial gauge field. After modifying our model of one single scalar field by coupling the dilaton to the Kalb-Ramond field, we find that this result is changed. Furthermore, we analyze Kaluza-Klein massive modes and resonance structures.

  16. Development and applications of NMR (nuclear magnetic resonance) in low fields and zero field

    SciTech Connect (OSTI)

    Bielecki, A.

    1987-05-01T23:59:59.000Z

    This dissertation is about nuclear magnetic resonance (NMR) spectroscopy in the absence of applied magnetic fields. NMR is usually done in large magnetic fields, often as large as can be practically attained. The motivation for going the opposite way, toward zero field, is that for certain types of materials, particularly powdered or polycrystalline solids, the NMR spectra in zero field are easier to interpret than those obtained in high field. 92 refs., 60 figs., 1 tab.

  17. UNUSUAL LONG AND LUMINOUS OPTICAL TRANSIENT IN THE SUBARU DEEP FIELD

    SciTech Connect (OSTI)

    Urata, Yuji; Tsai, Patrick P. [Institute of Astronomy, National Central University, Chung-Li 32054, Taiwan (China); Huang, Kuiyun [Academia Sinica Institute of Astronomy and Astrophysics, Taipei 106, Taiwan (China); Morokuma, Tomoki; Motohara, Kentaro [Institute of Astronomy, Graduate School of Science, University of Tokyo, Mitaka, Tokyo 181-0015 (Japan); Yasuda, Naoki [Institute for the Physics and Mathematics of the Universe, University of Tokyo, Kashiwa 277-8568 (Japan); Tanaka, Masaomi; Hayashi, Masao; Kashikawa, Nobunari [Optical and Infrared Astronomy Division, National Astronomical Observatory, Mitaka, Tokyo 181-8588 (Japan); Ly, Chun [Space Telescope Science Institute, Baltimore, MD (United States); Malkan, Matthew A., E-mail: urata@astro.ncu.edu.tw [Department of Physics and Astronomy, UCLA, Box 951547, Los Angeles, CA (United States)

    2012-11-20T23:59:59.000Z

    We present observations of SDF-05M05, an unusual optical transient discovered in the Subaru Deep Field (SDF). The duration of the transient is > {approx} 800 days in the observer frame, and the maximum brightness during observation reached approximately 23 mag in the i' and z' bands. The faint host galaxy is clearly identified in all five optical bands of the deep SDF images. The photometric redshift of the host yields z {approx} 0.6 and the corresponding absolute magnitude at maximum is {approx} - 20. This implies that this event shone with an absolute magnitude brighter than -19 mag for approximately 300 days in the rest frame, which is significantly longer than a typical supernova and ultraluminous supernova. The total radiated energy during our observation was 1 Multiplication-Sign 10{sup 51} erg. The light curves and color evolution are marginally consistent with some luminous IIn supernovae. We suggest that the transient may be a unique and peculiar supernova at intermediate redshift.

  18. Discovery of Four Field Methane (T-type) Dwarfs with 2MASS

    E-Print Network [OSTI]

    A. J. Burgasser; J. D. Kirkpatrick; M. E. Brown; I. N. Reid; J. E. Gizis; C. C. Dahn; D. G. Monet; C. A. Beichman; J. Liebert; R. M. Cutri; M. F. Skrutskie

    1999-08-03T23:59:59.000Z

    We report the discovery of four field methane (T-type) brown dwarfs using 2MASS survey data. One additional methane dwarf, previously discovered by SDSS, was also identified. Near-infrared spectra clearly show the 1.6 and 2.2 um CH4 absorption bands characteristic of objects with T_eff < 1300 K, as well as broadened H2O bands at 1.4 and 1.9 um. Comparing the spectra of these objects with Gl 229B, we propose that all new 2MASS T dwarfs are warmer than 950 K, in order from warmest to coolest: 2MASS J1217-03, J1225-27, J1047+21 and J1237+65. Based on this preliminary sample, we find a warm T dwarf surface density of 0.0022 T dwarfs/sq. deg., or ~ 90 warm T dwarfs over the whole sky detectable to J < 16. The resulting space density upper limit, 0.01 T dwarfs/pc^3, is comparable to that of the L dwarf sample from Kirkpatrick et al. (1999).

  19. Graphene nanopore field effect transistors

    SciTech Connect (OSTI)

    Qiu, Wanzhi; Skafidas, Efstratios, E-mail: sskaf@unimelb.edu.au [Centre for Neural Engineering, The University of Melbourne, 203 Bouverie Street, Carlton, Victoria 3053 (Australia); Department of Electrical and Electronic Engineering, The University of Melbourne, Parkville, Victoria 3010 (Australia)

    2014-07-14T23:59:59.000Z

    Graphene holds great promise for replacing conventional Si material in field effect transistors (FETs) due to its high carrier mobility. Previously proposed graphene FETs either suffer from low ON-state current resulting from constrained channel width or require complex fabrication processes for edge-defecting or doping. Here, we propose an alternative graphene FET structure created on intrinsic metallic armchair-edged graphene nanoribbons with uniform width, where the channel region is made semiconducting by drilling a pore in the interior, and the two ends of the nanoribbon act naturally as connecting electrodes. The proposed GNP-FETs have high ON-state currents due to seamless atomic interface between the channel and electrodes and are able to be created with arbitrarily wide ribbons. In addition, the performance of GNP-FETs can be tuned by varying pore size and ribbon width. As a result, their performance and fabrication process are more predictable and controllable in comparison to schemes based on edge-defects and doping. Using first-principle transport calculations, we show that GNP-FETs can achieve competitive leakage current of ?70?pA, subthreshold swing of ?60?mV/decade, and significantly improved On/Off current ratios on the order of 10{sup 5} as compared with other forms of graphene FETs.

  20. Coherent hybrid electromagnetic field imaging

    DOE Patents [OSTI]

    Cooke, Bradly J. (Jemez Springs, NM); Guenther, David C. (Los Alamos, NM)

    2008-08-26T23:59:59.000Z

    An apparatus and corresponding method for coherent hybrid electromagnetic field imaging of a target, where an energy source is used to generate a propagating electromagnetic beam, an electromagnetic beam splitting means to split the beam into two or more coherently matched beams of about equal amplitude, and where the spatial and temporal self-coherence between each two or more coherently matched beams is preserved. Two or more differential modulation means are employed to modulate each two or more coherently matched beams with a time-varying polarization, frequency, phase, and amplitude signal. An electromagnetic beam combining means is used to coherently combine said two or more coherently matched beams into a coherent electromagnetic beam. One or more electromagnetic beam controlling means are used for collimating, guiding, or focusing the coherent electromagnetic beam. One or more apertures are used for transmitting and receiving the coherent electromagnetic beam to and from the target. A receiver is used that is capable of square-law detection of the coherent electromagnetic beam. A waveform generator is used that is capable of generation and control of time-varying polarization, frequency, phase, or amplitude modulation waveforms and sequences. A means of synchronizing time varying waveform is used between the energy source and the receiver. Finally, a means of displaying the images created by the interaction of the coherent electromagnetic beam with target is employed.

  1. Magnetic fields in Neutron Stars

    E-Print Network [OSTI]

    Viganň, Daniele; Miralles, Juan A; Rea, Nanda

    2015-01-01T23:59:59.000Z

    Isolated neutron stars show a diversity in timing and spectral properties, which has historically led to a classification in different sub-classes. The magnetic field plays a key role in many aspects of the neutron star phenomenology: it regulates the braking torque responsible for their timing properties and, for magnetars, it provides the energy budget for the outburst activity and high quiescent luminosities (usually well above the rotational energy budget). We aim at unifying this observational variety by linking the results of the state-of-the-art 2D magneto-thermal simulations with observational data. The comparison between theory and observations allows to place two strong constraints on the physical properties of the inner crust. First, strong electrical currents must circulate in the crust, rather than in the star core. Second, the innermost part of the crust must be highly resistive, which is in principle in agreement with the presence of a novel phase of matter so-called nuclear pasta phase.

  2. Continuous Time Finite State Mean Field Games

    SciTech Connect (OSTI)

    Gomes, Diogo A., E-mail: dgomes@math.ist.utl.pt [Instituto Superior Tecnico, Center for Mathematical Analysis, Geometry, and Dynamical Systems, Departamento de Matematica (Portugal); Mohr, Joana, E-mail: joana.mohr@ufrgs.br; Souza, Rafael Rigao, E-mail: rafars@mat.ufrgs.br [UFRGS, Instituto de Matematica (Brazil)

    2013-08-01T23:59:59.000Z

    In this paper we consider symmetric games where a large number of players can be in any one of d states. We derive a limiting mean field model and characterize its main properties. This mean field limit is a system of coupled ordinary differential equations with initial-terminal data. For this mean field problem we prove a trend to equilibrium theorem, that is convergence, in an appropriate limit, to stationary solutions. Then we study an N+1-player problem, which the mean field model attempts to approximate. Our main result is the convergence as N{yields}{infinity} of the mean field model and an estimate of the rate of convergence. We end the paper with some further examples for potential mean field games.

  3. Effective Hamiltonian Constraint from Group Field Theory

    E-Print Network [OSTI]

    Etera R. Livine; Daniele Oriti; James P. Ryan

    2011-04-28T23:59:59.000Z

    Spinfoam models provide a covariant formulation of the dynamics of loop quantum gravity. They are non-perturbatively defined in the group field theory (GFT) framework: the GFT partition function defines the sum of spinfoam transition amplitudes over all possible (discretized) geometries and topologies. The issue remains, however, of explicitly relating the specific form of the group field theory action and the canonical Hamiltonian constraint. Here, we suggest an avenue for addressing this issue. Our strategy is to expand group field theories around non-trivial classical solutions and to interpret the induced quadratic kinematical term as defining a Hamiltonian constraint on the group field and thus on spin network wave functions. We apply our procedure to Boulatov group field theory for 3d Riemannian gravity. Finally, we discuss the relevance of understanding the spectrum of this Hamiltonian operator for the renormalization of group field theories.

  4. Magnetic monopole field exposed by electrons

    E-Print Network [OSTI]

    Béché, A; Van Tendeloo, G; Verbeeck, J

    2013-01-01T23:59:59.000Z

    Magnetic monopoles have provided a rich field of study, leading to a wide area of research in particle physics, solid state physics, ultra-cold gases, superconductors, cosmology, and gauge theory. So far, no true magnetic monopoles were found experimentally. Using the Aharonov-Bohm effect, one of the central results of quantum physics, shows however, that an effective monopole field can be produced. Understanding the effects of such a monopole field on its surroundings is crucial to its observation and provides a better grasp of fundamental physical theory. We realize the diffraction of fast electrons at a magnetic monopole field generated by a nanoscopic magnetized ferromagnetic needle. Previous studies have been limited to theoretical semiclassical optical calculations of the motion of electrons in such a monopole field. Solid state systems like the recently studied 'spin ice' provide a constrained system to study similar fields, but make it impossible to separate the monopole from the material. Free space ...

  5. Holographic Representation of Higher Spin Gauge Fields

    E-Print Network [OSTI]

    Debajyoti Sarkar; Xiao Xiao

    2014-11-17T23:59:59.000Z

    Extending the results of \\cite{Heem}, \\cite{KLRS} on the holographic representation of local gauge field operators in anti de Sitter space, here we construct the bulk operators for higher spin gauge fields in the leading order of $\\frac{1}{N}$ expansion. Working in holographic gauge for higher spin gauge fields, we show that gauge field operators with integer spin $s>1$ can be represented by an integration over a ball region, which is the interior region of the spacelike bulk lightcone on the boundary. The construction is shown to be AdS-covariant up to gauge transformations, and the two-point function between higher spin gauge fields and boundary higher spin current exhibit singularities on both bulk and boundary lightcones. We also comment on possible extension to the level of three-point functions and carry out a causal construction for higher spin fields in de Sitter spacetime.

  6. Technology Development and Field Trials of EGS Drilling Systems...

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

    Technology Development and Field Trials of EGS Drilling Systems Technology Development and Field Trials of EGS Drilling Systems Technology Development and Field Trials of EGS...

  7. Characterization of Field-Aged Exhaust Gas Recirculation Cooler...

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

    Field-Aged Exhaust Gas Recirculation Cooler Deposits Characterization of Field-Aged Exhaust Gas Recirculation Cooler Deposits Characterized field-aged exhaust gas recirculation...

  8. Beyond the scalar Higgs, in lattice quantum field theory

    E-Print Network [OSTI]

    Schroeder, Christopher Robert

    2009-01-01T23:59:59.000Z

    as an effective field theory . . . . . Higgs mass upperHiggs, in Lattice Quantum Field Theory by Christopher Robertin Lattice Quantum Field Theory A dissertation submitted in

  9. Topics in low-dimensional field theory

    SciTech Connect (OSTI)

    Crescimanno, M.J.

    1991-04-30T23:59:59.000Z

    Conformal field theory is a natural tool for understanding two- dimensional critical systems. This work presents results in the lagrangian approach to conformal field theory. The first sections are chiefly about a particular class of field theories called coset constructions and the last part is an exposition of the connection between two-dimensional conformal theory and a three-dimensional gauge theory whose lagrangian is the Chern-Simons density.

  10. Closed inflationary universe with tachyonic field

    E-Print Network [OSTI]

    Leonardo Balart; Sergio del Campo; Ramon Herrera; Pedro Labrana

    2007-05-22T23:59:59.000Z

    In this article we study closed inflationary universe models by using a tachyonic field theory. We determine and characterize the existence of an universe with $\\Omega > 1$, and which describes a period of inflation. We find that considered models are less restrictive compared to the standard ones with a scalar field. We use recent astronomical observations to constraint the parameters appearing in the model. Obtained results are compared to those found in the standard scalar field inflationary universes.

  11. Entanglement Generation by Electric Field Background

    E-Print Network [OSTI]

    Zahra Ebadi; Behrouz Mirza

    2014-10-12T23:59:59.000Z

    The quantum vacuum is unstable under the influence of an external electric field and decays into pairs of charged particles, a process which is known as the Schwinger pair production. We propose and demonstrate that this electric field can generate entanglement. Using the Schwinger pair production for constant and pulsed electric fields, we study entanglement for scalar particles with zero spins and Dirac fermions. One can observe the variation of the entanglement produced for bosonic and fermionic modes with respect to different parameters.

  12. Thermodynamics of Blue Phases In Electric Fields

    E-Print Network [OSTI]

    O. Henrich; D. Marenduzzo; K. Stratford; M. E. Cates

    2010-03-04T23:59:59.000Z

    We present extensive numerical studies to determine the phase diagrams of cubic and hexagonal blue phases in an electric field. We confirm the earlier prediction that hexagonal phases, both 2 and 3 dimensional, are stabilized by a field, but we significantly refine the phase boundaries, which were previously estimated by means of a semi-analytical approximation. In particular, our simulations show that the blue phase I -- blue phase II transition at fixed chirality is largely unaffected by electric field, as observed experimentally.

  13. Haag's theorem in noncommutative quantum field theory

    SciTech Connect (OSTI)

    Antipin, K. V. [Moscow State University, Faculty of Physics (Russian Federation)] [Moscow State University, Faculty of Physics (Russian Federation); Mnatsakanova, M. N., E-mail: mnatsak@theory.sinp.msu.ru [Moscow State University, Skobeltsyn Institute of Nuclear Physics (Russian Federation); Vernov, Yu. S. [Russian Academy of Sciences, Institute for Nuclear Research (Russian Federation)] [Russian Academy of Sciences, Institute for Nuclear Research (Russian Federation)

    2013-08-15T23:59:59.000Z

    Haag's theorem was extended to the general case of noncommutative quantum field theory when time does not commute with spatial variables. It was proven that if S matrix is equal to unity in one of two theories related by unitary transformation, then the corresponding one in the other theory is equal to unity as well. In fact, this result is valid in any SO(1, 1)-invariant quantum field theory, an important example of which is noncommutative quantum field theory.

  14. Haag's Theorem in Noncommutative Quantum Field Theory

    E-Print Network [OSTI]

    K. V. Antipin; M. N. Mnatsakanova; Yu. S. Vernov

    2012-02-05T23:59:59.000Z

    Haag's theorem was extended to noncommutative quantum field theory in a general case when time does not commute with spatial variables. It was proven that if S-matrix is equal to unity in one of two theories related by unitary transformation, then the corresponding one in another theory is equal to unity as well. In fact this result is valid in any SO(1,1) invariant quantum field theory, of which an important example is noncommutative quantum field theory.

  15. Atomic Probes of Noncommutative Field Theory

    E-Print Network [OSTI]

    Charles D. Lane

    2002-01-07T23:59:59.000Z

    We consider the role of Lorentz symmetry in noncommutative field theory. We find that a Lorentz-violating standard-model extension involving ordinary fields is general enough to include any realisitc noncommutative field theory as a subset. This leads to various theoretical consequences, as well as bounds from existing experiments at the level of (10 TeV)$^{-2}$ on the scale of the noncommutativity parameter.

  16. Braneworlds, Conformal Fields and Dark Energy

    E-Print Network [OSTI]

    Rui Neves

    2006-01-06T23:59:59.000Z

    In the Randall-Sundrum scenario we analize the dynamics of a spherically symmetric 3-brane when matter fields propagate in the bulk. For a well defined class of conformal fields of weight -4 we determine a new set of exact 5-dimensional solutions which localize gravity in the vicinity of the brane and are stable under radion field perturbations. Geometries which describe the dynamics of inhomogeneous dust, generalized dark radiation and homogeneous polytropic dark energy are shown to belong to this set.

  17. Colour superconductivity in a strong magnetic field

    E-Print Network [OSTI]

    Efrain J. Ferrer; Vivian de la Incera; Cristina Manuel

    2005-11-30T23:59:59.000Z

    We explore the effects of an applied strong external magnetic field in a three flavour massless colour superconductor. The long-range component of the B field that penetrates the superconductor enhances some quark condensates, leading to a different condensation pattern. The external field also reduces the flavour symmetries in the system, and thus it changes drastically the corresponding low energy physics. Our considerations are relevant for the study of highly magnetized compact stars.

  18. Field Monitoring Protocol: Heat Pump Water Heaters

    SciTech Connect (OSTI)

    Sparn, B.; Earle, L.; Christensen, D.; Maguire, J.; Wilson, E.; Hancock, E.

    2013-02-01T23:59:59.000Z

    This document provides a standard field monitoring protocol for evaluating the installed performance of Heat Pump Water Heaters in residential buildings. The report is organized to be consistent with the chronology of field test planning and execution. Research questions are identified first, followed by a discussion of analysis methods, and then the details of measuring the required information are laid out. A field validation of the protocol at a house near the NREL campus is included for reference.

  19. Mathematical quantization of Hamiltonian field theories

    E-Print Network [OSTI]

    A. V. Stoyanovsky

    2015-02-04T23:59:59.000Z

    We define the renormalized evolution operator of the Schr\\"odinger equation in the infinite dimensional Weyl-Moyal algebra during a time interval for a wide class of Hamiltonians depending on time. This leads to a mathematical definition of quantum field theory $S$-matrix and Green functions. We show that for renormalizable field theories, our theory yields the renormalized perturbation series of perturbative quantum field theory. All the results are based on the Feynman graph series technique.

  20. Sandia National Laboratories: organic field effect transistor

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

    organic field effect transistor ECIS and Compass Metals: Platinum Nanostructures for Enhanced Catalysis On March 29, 2013, in Advanced Materials Laboratory, Capabilities, Energy,...