National Library of Energy BETA

Sample records for van horn lbl

  1. LBL

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

    LBL 35965 HIFAN 668 EDWIN M. McMILLAN, A BIOGRAPHICAL SKETCH E D W D J. LOFGREN, Associate Director Emeritus LAWRENCE BERKELEY LABORATORY BERKEL;EY, CALIFORNIA 94720 Presented at the International Symposium. The 50th Anniversary of the Phase Stability Principle Moscow/Dubna, Russia 12-15 July 1994 ABSTRACT. Edwin M. McMillan was one of the great scientists of the middle years of this century. He made notable contributions to nuclear, and particle physics, the chemis- try of transuranic elements,

  2. ARM - VAP Process - lbl

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

    Productslbl Documentation & Plots Data Management Facility Plots (Quick Looks) ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send VAP : Line-By-Line Radiative Transfer Model (LBL) Instrument Categories Radiometric, Atmospheric Profiling The Line-by-Line Radiative Transfer Model (LBLRTM) is a product of Atmospheric and Environmental Research, Incorporated (AER). The LBLRTM is based on the FASCODE line-by-line model,

  3. Kathryn Zurek LBL Berkeley November

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

    theories for dark matter: hunting beyond the WIMP Kathryn Zurek LBL Berkeley November 11, 2015 4:00 p.m. - Wilson Hall, One West The nature of dark matter is one of the most important outstanding problems in physics and cosmology. From observing astrophysical objects, we have learned that dark matter represents some 25% of the total energy of the universe, while ordinary matter weighs in at only about 4%. Although they make up a large fraction of the energy of the universe, dark matter particles

  4. Evaluation and combined geophysical interpretations of NURE and related geoscience data in the Van Horn, Pecos, Marfa, Fort Stockton, Presidido, and Emory Peak quadrangles, Texas. Volume 1. Final report

    SciTech Connect (OSTI)

    Keller, G.R.; Hinze, W.J.; Aiken, C.L.V.; Goodell, P.C.; Roy, R.F.; Pingitore, N.E.

    1981-09-01

    This report (two volumes) is the culmination of a two-year study of the six Trans-Pecos Texas quadrangles (Van Horn, Pecos, Marfa, Fort Stockton, Presidio, and Emory Park) surveyed as part of the National Uranium Resource Evaluation (NURE) program. Volume I contains a discussion of the aeromagnetic, gravity and geochemical data, their processing, and their analysis. The geologic history and setting of the Trans-Pecos are discussed along with the uranium potential of the region. Uranium anomalies and occurrences characteristic of numerous different NURE classes are present in the study area, and information is presented on 33 drill holes into these targets. Volume II is a folio of maps reduced to a scale of 1:500,000. Geologic maps for each of the six quadrangles are included and the geophysical maps have been prepared to be overlays for the goelogic maps. In addition to the geologic maps, residual aeromagnetic anomaly, complete Bouguer gravity anomaly, flight line index, gravity station index, and anomaly interpretative maps were prepared for each quadrangle. A large suite of digitally processed maps of gravity and aeromagnetic data were prepared and are included in Volume II.

  5. theflowerlow-lbl_caption.jpg | OSTI, US Dept of Energy Office of Scientific

    Office of Scientific and Technical Information (OSTI)

    and Technical Information theflowerlow-lbl_caption

  6. NERSC, LBL Researchers Share Materials Science Advances at APS

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

    NERSC, LBL Researchers Highlight Materials Science at APS NERSC, LBL Researchers Share Materials Science Advances at APS March 3, 2014 APSlogo NERSC and Lawrence Berkeley National Laboratory (LBL) are well represented this week at the American Physical Society (APS) March meeting. Some 10,000 physicists, scientists, and students are expected to attend this year's meeting, which takes place March 3-7 in Denver, CO. Physicists and students will report on groundbreaking research from industry,

  7. Performance of the LBL ECR ion source

    SciTech Connect (OSTI)

    Lyneis, C.M.

    1984-10-01

    The LBL Electron Cyclotron Resonance (ECR) ion source in test operation since January 1984 has produced a wide variety of high charge state ion beams suitable for injection into the 88-Inch Cyclotron. Two recent developments have dramatically improved the capability of the ECR source. The first development was the production of metallic ions. The intensities of aluminum ions produced were 36, 22, 10, and .065 e..mu..A for charge states 6, 7, 8, and 11, respectively. Calcium ion intensities were 36, 31, 4.6, and 0.20 e..mu..A for charge states 8, 9, 12, and 14, respectively. The second development was the replacement of the sextupole magnet used in of all other high charge state ECR sources with an octupole structure. This modification resulted in a dramatic improvement in the intensities of the high charge state beams and a significant upward shift in the charge state distribution (C.S.D.). The ECR-octupole or OCTIGUN has produced 89, 52, 9, and 2.5 e..mu..A of Ar/sup 8,9,11,12+/ and 21, 10, and 0.34 e..mu..A of Kr/sup 10,14,18+/, respectively. For the high charge states of argon and krypton the improvement gained by using the octupole is typically a factor of 5 to 10.

  8. Horn Wind | Open Energy Information

    Open Energy Info (EERE)

    Wind Jump to: navigation, search Name: Horn Wind Place: Windthorst, Texas Zip: 76389 Sector: Wind energy Product: Texas-based company that develops community-based industrial wind...

  9. Big Horn 2 | Open Energy Information

    Open Energy Info (EERE)

    2 Jump to: navigation, search Name Big Horn 2 Facility Big Horn 2 Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner Iberdrola Renewables...

  10. Progress on the LBL ECR heavy ion source

    SciTech Connect (OSTI)

    Clark, D.J.; Jongen, Y.; Lyneis, C.M.

    1984-04-01

    The LBL ECR ion source, which began test operation in January 1984, has already produced a variety of high charge state heavy ion beams of sufficient intensity for cyclotron operation, although actual use must wait for completion of the beam transport system. The source has produced 40 ..mu..A of O/sup 6 +/, 2 ..mu..A of O/sup 7 +/, 40 ..mu..A of Ar/sup 8 +/, and 0.20 ..mu..A of Ar/sup 12 +/. The source development has centered on optimizing source performance with modifications and parameter tuning. Future plans include construction of an SmCo/sub 5/ octupole structure, and testing of solid feed techniques. The construction of the beam transport line and calculations on center region geometry for heavy ion axial injection into the 88-Inch Cyclotron are also underway.

  11. LBL/Industry fractured reservoir performance definition project

    SciTech Connect (OSTI)

    Benson, S.M.

    1995-04-01

    One of the problems facing the petroleum industry is the recovery of oil from heterogeneous, fractured reservoirs and from reservoirs that have been partially depleted. In response to this need, several companies, notably British Petroleum USA, (BP) and Continental Oil Company (CONOCO), have established integrated reservoir description programs. Concurrently, LBL is actively involved in developing characterization technology for heterogeneous, fractured rock, mainly for DOE`s Civilian Nuclear Waste Program as well as Geothermal Energy programs. The technology developed for these programs was noticed by the petroleum industry and resulted in cooperative research centered on the petroleum companies test facilities. The emphasis of this work is a tightly integrated interdisciplinary approach to the problem of characterizing complex, heterogeneous earth materials. In this approach we explicitly combine the geologic, geomechanical, geophysical and hydrologic information in a unified model for predicting fluid flow. The overall objective is to derive improved integrated approaches to characterizing naturally fractured gas reservoirs.

  12. Recent developments of the LBL ECR ion source

    SciTech Connect (OSTI)

    Lyneis, C.M.

    1986-05-01

    The performance of the LBL ECR has improved significantly since January 85 when the last ECR Ion Source Workshop was held in Berkeley. The 88-Inch Cyclotron began regular operation with the ECR source just prior to the workshop. Since then about 80% of the cyclotron operating schedule has been with the ECR source. The light-ion filament source is used only for runs two or more shifts in length using proton, /sup 3/He, or alpha beams. Occasionally the polarized ion source is used. The heavy-ion PIG sources are not longer used. The operating experience with the Cyclotron+ECR has been highly successful in terms of reliability, stability, production of high charge state currents, and in the range of ions which can be produced. For example, a 32.5 MeV/u /sup 16/O/sup 8 +/ beam was developed and successfully used for a nuclear structure experiment. The 60 nA beam available from the cyclotron was more intense than the experiment could use. A 1.08 GeV /sup 36/Ar/sup 18 +/ beam was used to test the response of various scintillator materials to intermediate energy heavy ions. Three aspects of the LBL ECR source development are discussed. First, the installation of a new first stage cavity has resulted in improved source performance. Second, a number of metal ion beams have been developed and are used regularly for nuclear science experiments with the cyclotron. Third, the source performance has been compared to charge state distribution (CSD) calculations using a computer code.

  13. ELECTROMIGRATION ISSUES IN HIGH CURRENT HORN.

    SciTech Connect (OSTI)

    ZHANG, S.Y.; BELLAVIA, S.; SANDBERG, J.; ET AL.

    2005-05-16

    The secondary particle focusing horn for the AGS neutrino experiment proposal is a high current and high current density device. The peak current of horn is 300 kA. At the smallest area of horn, the current density is near 8 kA/mm{sup 2}. At very high current density, a few kA/mm{sup 2}, the electromigration phenomena will occur. Momentum transfer between electrons and metal atoms at high current density causes electromigration. The reliability and lifetime of focusing horn can be severely reduced by electromigration. In this paper, we discuss issues such as device reliability model, incubation time of electromigration, and lifetime of horn.

  14. Preliminary development of the LBL/USGS three-dimensional site-scale model of Yucca Mountain, Nevada

    SciTech Connect (OSTI)

    Wittwer, C.; Chen, G.; Bodvarsson, G.S.; Chornack, M.; Flint, A.; Flint, L.; Kwicklis, E.; Spengler, R.

    1995-06-01

    A 3-D model of moisture flow within the unsaturated zone at Yucca Mountain is being developed at LBL in cooperation with USGS. This site-scale model covers an area of about 34 km{sup 2} and is bounded by major faults to the north, east, and west. The relatively coarse-grid model includes about 300 horizontal grid-blocks and 17 layers. Contour maps and isopach maps are presented defining different types of infiltration zones, and the spatial distribution of Tiva Canyon, Paintbrush, and Topopah Spring hydrogeological units. Matrix flow is approximated using the van Genuchten model, and the equivalent continuum approximation is used to account for fracture flow in the welded units. One-, two-, and three-dimensional simulations are conducted using the TOUGH2 computer program. Steady-state simulations are performed with various uniform and nonuniform infiltration rates; results are interpreted in terms of effect of fault characteristics on moisture flow distribution, and on the location and formation of preferential pathways.

  15. Microsoft PowerPoint - 1_Pete_Deessaules_Brain_Horn_NMMSS_2014_screensaver.ppt [Compatibility Mode]

    National Nuclear Security Administration (NNSA)

    Welcome Pete Dessaules, NNSA Brian Horn, NRC

  16. Van Hove's Birthday

    ScienceCinema (OSTI)

    None

    2011-04-25

    "Happy Birthday Léon!" Plusieurs orateurs rendent hommage à L.Van Hove et son travail à l'occasion de son 65me anniversaire. A la fin remerciements de L.Van Hove.

  17. Bruno Van Wonterghem

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

    bruno van wonterghem Bruno Van Wonterghem Bruno Van Wonterghem Operations Manager National Ignition Facility Dr. Bruno Van Wonterghem became commissioning manager of NIF in 2001 and operations manager in 2008. He earned his Ph.D. in chemical physics at the University of Leuven in Belgium in 1987. He has extensive experience in developing laser systems for plasma research in academia through work at the University of California, Irvine; the Max Planck Institute; and LLNL. He was manager of

  18. Joaquin Correa JoaquinCorrea@lbl.gov NERSC Data and Analytics Services

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

    Joaquin Correa JoaquinCorrea@lbl.gov NERSC Data and Analytics Services NERSC User Meeting August, 2015 Data Analytics at NERSC Data analytics at NERSC Hardware Resource Management Runtime Framework Tools + Libraries Analytics Capabilities Science Applications Climate, Cosmology, Kbase, Materials, BioImaging, Your science! Statistics, Machine Learning R, python, MLBase Image Processing MATLAB OMERO, Fiji Graph Analytics GraphX Database Operations SQL MPI Spark SciDB Filesystems (Lustre),

  19. LBL-25807

    Office of Scientific and Technical Information (OSTI)

    ... With this approximation, a net transverse momentum transfer to electrons occurs only in t ... the space-charge force is weighted by a factor I 7 2 ? , which heavily emphasizes ...

  20. LBL-25687

    Office of Scientific and Technical Information (OSTI)

    ... Rev. Lett. 43, 1892 (1979). 64. G. R. Stewart, Z. Flak, J. 0. Willis, and D. L. Smith, Phya. Rev. Lett. 52, 679 (1984). 65. Valence Instabilities and Related Harrow Band ...

  1. Bruno Van Wonterghem

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

    bruno van wonterghem Bruno Van Wonterghem Operations Manager Keeps NIF Trekking Bruno Van Wonterghem Bruno Van Wonterghem Do you remember when you started being interested in science? My uncle was a radiochemistry professor, and I would go to the lab with him every Wednesday. He had one of the first calculators, the size of a briefcase. I could see it think with its lights flickering and parts moving back and forth. A simple square root would take seconds to calculate. My grandfather was a

  2. Transparent Conductors from Carbon Nanotubes LBL-Assembled with Polymer Dopant with ?-? Electron Transfer

    SciTech Connect (OSTI)

    Zhu, Jian; Shim, Bong Sup; Di Prima, Matthew; Kotov, Nicholas A.

    2011-01-01

    Single-walled carbon nanotube (SWNT) and other carbon-based coatings are being considered as replacements for indium tin oxide (ITO). The problems of transparent conductors (TCs) coatings from SWNT and similar materials include poor mechanical properties, high roughness, low temperature resilience, and fast loss of conductivity. The simultaneous realization of these desirable characteristics can be achieved using high structural control of layer-by-layer (LBL) deposition, which is demonstrated by the assembly of hydroethyl cellulose (HOCS) and sulfonated polyetheretherketone (SPEEK)-SWNTs. A new type of SWNT doping based on electron transfer from valence bands of nanotubes to unoccupied levels of SPEEK through ?-? interactions was identified for this system. It leads to a conductivity of 1.1 10? S/m at 66 wt % loadings of SWNT. This is better than other polymer/SWNT composites and translates into surface conductivity of 920 ?/? and transmittance of 86.7% at 550 nm. The prepared LBL films also revealed unusually high temperature resilience up to 500 C, and low roughness of 3.5 nm (ITO glass -2.4 nm). Tensile modulus, ultimate strength, and toughness of such coatings are 13 2 GPa, 366 35 MPa, and 8 3 kJ/m, respectively, and exceed corresponding parameters of all similar TCs. The cumulative figure of merit, ?TC, which included the critical failure strain relevant for flexible electronics, was ?TC = 0.022 and should be compared to ?TC = 0.006 for commercial ITO. Further optimization is possible using stratified nanoscale coatings and improved doping from the macromolecular LBL components.

  3. NERSC's POWER 5 System Richard Gerber NERSC User Services RAGerber@lbl.gov

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

    Monitoring on NERSC's POWER 5 System Richard Gerber NERSC User Services RAGerber@lbl.gov ScicomP 14 Poughkeepsie, N.Y. May 22, 2008 ScicomP 14, Poughkeepsie, N.Y. May 22, 2008 2 Prequel * Although this talk centers around identifying system problems, it also highlights the stability and excellent design of the p575 POWER 5 system. * Virtually all the problems we've had with Bassi can be attributed to software complexity. * Take away-point: Application testing and monitoring are necessary to

  4. Big Horn County, Montana: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    Subtype B. Places in Big Horn County, Montana Busby, Montana Crow Agency, Montana Fort Smith, Montana Hardin, Montana Lodge Grass, Montana Muddy, Montana Pryor, Montana St....

  5. First operation of the LBL ERC ion source with the 88-inch cyclotron

    SciTech Connect (OSTI)

    Lyneis, C.M.; Clark, D.J.

    1985-05-01

    The LBL ECR ion source and new injection system are now in regular operation with the 88-Inch Cyclotron supplying stable, reliable heavy ion beams for both nuclear physics and applied research. The ions accelerated to date cover the mass range from nitrogen to xenon, and the energy range of 3 to 27 MeV/nucleon. Overall transmission of up to 14% from source to external cyclotron beam has been obtained. A beam from solid material, magnesium, has been used successfully for an experimental run. The emittance has been measured, at 10 kV accelerating voltage, for a variety of ions and has been found to vary from 100..pi.. mm mrad for the low charge states to 20..pi.. mm mrad for high charge states, for about 50% of the beam. 10 refs., 1 fig., 2 tabs.

  6. CONCEPTUAL DESIGN STUDY OF HORN POWER SUPPLY.

    SciTech Connect (OSTI)

    ZHANG,W.; SANDBERG,J.; WENG,W.T.

    2003-06-16

    A 250 kA pulsed power supply is required for the focusing horn of the proposed Brookhaven AGS Super Neutrino Beam Facility for long baseline neutrino oscillation experiment. It is expected to pulse at 2.5 Hz repetition rate. A preliminary study is being conducted to explore the key issues associated with the power supply system design. Advanced technologies used in similar systems as well as new ideas are being examined, simulated and evaluated. This power supply will be a very high stored energy, high average power, and high peak power system.

  7. Jack VanKuiken | Argonne National Laboratory

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

    Jack VanKuiken Systems Engineer E-mail jvankuiken

  8. Propane Bakery Delivery Step Vans

    Alternative Fuels and Advanced Vehicles Data Center [Office of Energy Efficiency and Renewable Energy (EERE)]

    Case Study - Propane Bakery Delivery Step Vans April 2016 1 Contents Background .......................................................................................................................................................................... 3 Motivation for Adopting Propane ................................................................................................................................... 3 Financial Benefits

  9. Rienk van Grondelle | Photosynthetic Antenna Research Center

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

    Rienk van Grondelle Rienk van Grondelle Rienk van Grondelle Rienk van Grondelle Research Affiliate E-mail: r.van.grondelle@vu.nl Dr. van Grondelle's research focuses on trying to understand the physical basis of photosynthesis. Professor of Biophysics, Head of the Department of Physics and Astronomy Research Affiliates

  10. The limits on combining recursive horn rules with description logics

    SciTech Connect (OSTI)

    Levy, A.Y.; Rousset, M.C.

    1996-12-31

    Horn rule languages have formed the basis for many Artificial Intelligence application languages, but are not expressive enough to model domains with a rich hierarchical structure. Description logics have been designed especially to model rich hierarchies. Several applications would significantly benefit from combining the expressive power of both formalisms. This paper focuses on combining recursive function-free Horn rules with the expressive description logic ALCNR, and shows exactly when a hybrid language with decidable inference can be obtained. First, we show that several of the core constructors of description logics lead by themselves to undecidability of inference when combined with recursive function-free Horn rules. We then show that without these constructors we obtain a maximal subset of ALCNRR that yields a decidable hybrid language. Finally, we describe a restriction on the Horn rules that guarantees decidable inference when combined with all of ALCNR, and covers many of the common usages of recursive rules.

  11. Building-Integrated Solar Panels at BigHorn

    Broader source: Energy.gov [DOE]

    This photograph features the building-integrated photovoltaic (PV) panels at BigHorn Home Improvement Center, installed on the south-facing roof. The silicon PV modules were wired into three arrays...

  12. Ultra-wideband horn antenna with abrupt radiator

    DOE Patents [OSTI]

    McEwan, T.E.

    1998-05-19

    An ultra-wideband horn antenna transmits and receives impulse waveforms for short-range radars and impulse time-of flight systems. The antenna reduces or eliminates various sources of close-in radar clutter, including pulse dispersion and ringing, sidelobe clutter, and feedline coupling into the antenna. Dispersion is minimized with an abrupt launch point radiator element; sidelobe and feedline coupling are minimized by recessing the radiator into a metallic horn. Low frequency cut-off associated with a horn is extended by configuring the radiator drive impedance to approach a short circuit at low frequencies. A tapered feed plate connects at one end to a feedline, and at the other end to a launcher plate which is mounted to an inside wall of the horn. The launcher plate and feed plate join at an abrupt edge which forms the single launch point of the antenna. 8 figs.

  13. Ultra-wideband horn antenna with abrupt radiator

    DOE Patents [OSTI]

    McEwan, Thomas E.

    1998-01-01

    An ultra-wideband horn antenna transmits and receives impulse waveforms for short-range radars and impulse time-of flight systems. The antenna reduces or eliminates various sources of close-in radar clutter, including pulse dispersion and ringing, sidelobe clutter, and feedline coupling into the antenna. Dispersion is minimized with an abrupt launch point radiator element; sidelobe and feedline coupling are minimized by recessing the radiator into a metallic horn. Low frequency cut-off associated with a horn is extended by configuring the radiator drive impedance to approach a short circuit at low frequencies. A tapered feed plate connects at one end to a feedline, and at the other end to a launcher plate which is mounted to an inside wall of the horn. The launcher plate and feed plate join at an abrupt edge which forms the single launch point of the antenna.

  14. Big Horn Rural Electric Co | Open Energy Information

    Open Energy Info (EERE)

    307-568-2419 Website: www.bighornrea.com Facebook: https:www.facebook.compagesBig-Horn-Rural-Electric Outage Hotline: 1-800-564-2419 References: EIA Form EIA-861 Final...

  15. Big Horn County Elec Coop, Inc | Open Energy Information

    Open Energy Info (EERE)

    County Elec Coop, Inc Jump to: navigation, search Name: Big Horn County Elec Coop, Inc Place: Montana Phone Number: (406) 665-2830 Website: www.bhcec.com Outage Hotline: (406)...

  16. Big Horn County, Wyoming: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    Hide Map This article is a stub. You can help OpenEI by expanding it. Big Horn County is a county in Wyoming. Its FIPS County Code is 003. It is classified as...

  17. Julie Crenshaw Van Fleet

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

    Crenshaw Van Fleet 127 S. Fairfax Street, PMB#110 Alexandria, VA 22314 7 January 2007 Mr. Samuel W. Bodman Secretary of Energy Via Mr. Anthony J. Comco SEA Document Manager US DOE anthony.comco@hq.doe.gov 202/287-5736 fax and Ms. Carol Borgstrom, Director Office of NEPA Policy and Compliance US DOE askNEPA@hq.doe.gov 202/586-7031 fax RE: DOE/SEA-04, Special Environmental Analysis: For Actions Taken Under U.S. Department of Energy Emergency Orders Regarding Operation of the Potomac River

  18. Transverse electromagnetic horn antenna with resistively-loaded exterior surfaces

    DOE Patents [OSTI]

    Aurand, John F.

    1999-01-01

    An improved transverse electromagnetic (TEM) horn antenna comprises a resistive loading material on the exterior surfaces of the antenna plates. The resistive loading material attenuates or inhibits currents on the exterior surfaces of the TEM horn antenna. The exterior electromagnetic fields are of opposite polarity in comparison to the primary and desired interior electromagnetic field, thus inherently cause partial cancellation of the interior wave upon radiation or upon reception. Reducing the exterior fields increases the radiation efficiency of the antenna by reducing the cancellation of the primary interior field (supported by the interior surface currents). This increases the transmit gain and receive sensitivity of the TEM horn antenna, as well as improving the transient (time-domain) response.

  19. A new proof of tractability for ORD-horn relations

    SciTech Connect (OSTI)

    Ligozat, G.

    1996-12-31

    This paper gives an elementary proof of the tractability of a sub-class of temporal relations in Allen`s algebra and related temporal calculi, the class of pre-convex relations. In Allen`s case, this subclass coincides with the class of ORD-Horn relations. Nebel and Burckert defined ORD-Horn relations and proved that path-consistency is a sufficient condition for consistency of a network for this sub-class. We prove a stronger result: for each path-consistent network in the sub-class, we give an effective method for constructing a feasible scenario without backtrack.

  20. Brie Van Cleve | Department of Energy

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

    Brie Van Cleve About Us Brie Van Cleve - Former Stakeholder Engagement and Outreach Manager, Wind and Water Power Technologies Office Most Recent Mapping the Frontier of New Wind ...

  1. EA-1617: Lovell-Yellowtail and Basin-Lovell Transmission Line Rebuild Project, Big Horn County, Wyoming, and Big Horn and Carbon Counties, Montana

    Broader source: Energy.gov [DOE]

    DOE’s Western Area Power Administration prepared this EA and a finding of no significant impact for a proposal to rebuild the Lovell-Yellowtail (LV-YT) No. 1 and No. 2 115-kV transmission lines, located in Big Horn County, Wyoming, and Big Horn and Carbon Counties in Montana, and the Basin-Lovell 115-kV transmission line in Big Horn County, Wyoming.

  2. Noah Van Dam | Argonne National Laboratory

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

    Noah Van Dam Postdoctoral Appointee E-mail nvandam@anl.gov Website Google Scholar

  3. Van Ness Feldman | Open Energy Information

    Open Energy Info (EERE)

    Feldman Jump to: navigation, search Name: Van Ness Feldman Place: Washington, D.C., Washington, DC Zip: 20007 Product: Van Ness Feldman is a law firm concentrating on government...

  4. Heidi VanGenderen | Department of Energy

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

    VanGenderen has helped implement a multi-faceted public engagement and outreach program to ... VanGenderen has worked on energy and climate issues in the non-profit, public, academic, ...

  5. vanDuin_ReaxFF

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

    Voltage profile for Li- graphite system obtained by ReaxFF. (b) Li ordering in stage I LiC 6 compounds . FIRST Center Research Perspective: ReaxFF Reactive Force Field Development and Applications. Muralikrishna Raju, Alireza Ostadhossein and Adri van Duin The Pennsylvania State University Jennifer Achtyl and Franz Geiger Northwestern University Panchapakesan Ganesh and Paul Kent Oak Ridge National Laboratory Research Summary: The ReaxFF method enables large-scale (>> 1000 atoms) dynamics

  6. LBL--31721 DE93

    Office of Scientific and Technical Information (OSTI)

    ... T s is surface tempera- ture and K,,is hemispheric solar flux density incident on the surface. Researchers at the Horida Solar Energy Center Chandra et al. 1991 performed a ...

  7. LBL--29472 DE91

    Office of Scientific and Technical Information (OSTI)

    RFQ's- AN INTRODUCTION I John W. Staples Lawrence Berkeley Laboratory University of California Berkeley, California 94720 September 1990 This work supported by the Director, Office ...

  8. LBL--29472 DE91

    Office of Scientific and Technical Information (OSTI)

    This work supported by the Director, Office 11 of Energy Research, Office of High Energy and Nuclear Physics, Nuclear Science Divi- sion, U. S. Department of Energy under con- ...

  9. LBL--31721 DE93

    Office of Scientific and Technical Information (OSTI)

    ... We develop a method for reliably measuring albedo in the field by studying the ... outdoor environment are studied by measuring the surface tem- peratures of a variety ...

  10. Picture of the Week: Bulging Van Allen Belts

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

    2 Bulging Van Allen Belts Learn about the Van Allen Belts and how new findings from NASA's Van Allen Probes could impact how we protect technology in space. February 25, 2016 Bulging Van Allen Belts Watch the video on YouTube. Bulging Van Allen Belts Learn about the Van Allen Belts and how new findings from NASA's Van Allen Probes could impact how we protect technology in space

  11. S.Van der Meer tribute

    ScienceCinema (OSTI)

    None

    2011-04-25

    Plusieurs intervenants rendent hommage à Simon Van der Meer né en 1925 à La Haye NL et prix nobel de physique en 1984

  12. Don-Hyung Ha > Postdoc - MIT (Shao-Horn Group) > Center Alumni...

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

    Group, he received his PhD in September 2014. He continues his research as a member of the Electrochemical Energy Lab at MIT under the leadership for Professor Yang Shao-Horn...

  13. HIGH ENERGY PULSED POWER SYSTEM FOR AGS SUPER NEUTRINO FOCUSING HORN.

    SciTech Connect (OSTI)

    ZHANG, S.Y.; SANDBERG, J.; WENG, W.-T.

    2005-05-16

    This paper present a preliminary design of a 300 kA, 2.5 Hz pulsed power system. This system will drive the focusing horn of proposed Brookhaven AGS Neutrino Super Beam Facility for Very Long Baseline Neutrino Oscillation Experiment. The peak output power of the horn pulsed power system will reach Giga-watts, and the upgraded AGS will be capable of delivering 1 MW in beam power.

  14. Van Allen Probes observation and modeling of chorus excitation...

    Office of Scientific and Technical Information (OSTI)

    Van Allen Probes observation and modeling of chorus excitation and propagation during weak ... This content will become publicly available on August 20, 2016 Title: Van Allen Probes ...

  15. Molecular adsorption on metal surfaces with van der Waals density...

    Office of Scientific and Technical Information (OSTI)

    Molecular adsorption on metal surfaces with van der Waals density functionals Title: Molecular adsorption on metal surfaces with van der Waals density functionals Authors: Li, Guo ...

  16. Van der Waals metal-semiconductor junction: Weak Fermi level...

    Office of Scientific and Technical Information (OSTI)

    Van der Waals metal-semiconductor junction: Weak Fermi level pinning enables effective tuning of Schottky barrier Citation Details In-Document Search Title: Van der Waals ...

  17. IN MEMORIAM: Dr. Abraham (Abe) Van Luik

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

    11, 2016 IN MEMORIAM: Dr. Abraham (Abe) Van Luik The Carlsbad Field Office (CBFO) workforce is saddened by the recent loss of Dr. Abraham (Abe) Van Luik. Abe was a key member of the CBFO team and was well respected at DOE and in the international community. Abe led the CBFO International Repository Science Program. His work included contributions to coordinated research and sharing of results through bilateral and multilateral cooperation. Interacting with several international organizations, he

  18. Alternative Fuels Data Center: Propane Vans Keep Kansas City Transportation

    Alternative Fuels and Advanced Vehicles Data Center [Office of Energy Efficiency and Renewable Energy (EERE)]

    Company Rolling Propane Vans Keep Kansas City Transportation Company Rolling to someone by E-mail Share Alternative Fuels Data Center: Propane Vans Keep Kansas City Transportation Company Rolling on Facebook Tweet about Alternative Fuels Data Center: Propane Vans Keep Kansas City Transportation Company Rolling on Twitter Bookmark Alternative Fuels Data Center: Propane Vans Keep Kansas City Transportation Company Rolling on Google Bookmark Alternative Fuels Data Center: Propane Vans Keep

  19. Horn-coupled, commercially-fabricated aluminum lumped-element kinetic inductance detectors for millimeter wavelengths

    SciTech Connect (OSTI)

    McCarrick, H. Flanigan, D.; Jones, G.; Johnson, B. R.; Araujo, D.; Limon, M.; Luu, V.; Miller, A.; Ade, P.; Doyle, S.; Tucker, C.; Bradford, K.; Che, G.; Cantor, R.; Day, P.; Leduc, H.; Mauskopf, P.; Mroczkowski, T.; Zmuidzinas, J.

    2014-12-15

    We discuss the design, fabrication, and testing of prototype horn-coupled, lumped-element kinetic inductance detectors (LEKIDs) designed for cosmic microwave background studies. The LEKIDs are made from a thin aluminum film deposited on a silicon wafer and patterned using standard photolithographic techniques at STAR Cryoelectronics, a commercial device foundry. We fabricated 20-element arrays, optimized for a spectral band centered on 150 GHz, to test the sensitivity and yield of the devices as well as the multiplexing scheme. We characterized the detectors in two configurations. First, the detectors were tested in a dark environment with the horn apertures covered, and second, the horn apertures were pointed towards a beam-filling cryogenic blackbody load. These tests show that the multiplexing scheme is robust and scalable, the yield across multiple LEKID arrays is 91%, and the measured noise-equivalent temperatures for a 4 K optical load are in the range 266 ?K?(s)

  20. OSTIblog Articles in the James Van Allen Topic | OSTI, US Dept...

    Office of Scientific and Technical Information (OSTI)

    James Van Allen Topic James Van Allen - Space Pioneer by Kathy Chambers 10 Jun, 2016 in jamesvanallenwcaption.jpg James Van Allen's space instrumentation innovations and his... ...

  1. PARC Seminar Series featuring Rienk van Grondelle | Photosynthetic Antenna

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

    Research Center PARC Seminar Series featuring Rienk van Grondelle PARC Seminar Series featuring Rienk van Grondelle October 4, 2016 - 11:00am Brauer Hall room 12

  2. Van Buren Light & Power Dist | Open Energy Information

    Open Energy Info (EERE)

    Van Buren Light & Power Dist Jump to: navigation, search Name: Van Buren Light & Power Dist Place: Maine Phone Number: (207) 868-3321 Website: www.cmpco.comSuppliersAndPart Outage...

  3. james_van_allen_wcaption.jpg | OSTI, US Dept of Energy Office of Scientific

    Office of Scientific and Technical Information (OSTI)

    and Technical Information james_van_allen_wcaption

  4. A new picture of the Van Allen Belts

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

    A new picture of the Van Allen Belts A new picture of the Van Allen Belts A study conducted by Los Alamos and the New Mexico Consortium reveals that the shape of the Van Allen Belts is actually quite different than previously believed. January 21, 2016 van allen belts During geomagnetic storms, the empty region between the two belts can fill in completely with lower-energy electrons. Traditionally, scientists thought this slot region filled in only during the most extreme geomagnetic storms

  5. Van Allen probes pinpoint driver of speeding electrons

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

    Van Allen probes pinpoint driver of speeding electrons Van Allen probes pinpoint driver of speeding electrons Los Alamos researchers believe they have solved a lingering mystery about how electrons within Earth's radiation belt can suddenly become energetic enough to kill orbiting satellites. July 25, 2013 Artist's rendering of mechanism within Van Allen radiation belts An artist's rendering of a mechanism within the Van Allen radiation belts that can accelerate electrons to satellite-killing

  6. Peter Van Gemmeren | Argonne National Laboratory

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

    Van Gemmeren Software Engineer Ph.D., Physics from Johannes Gutenberg University Mainz in Germany 1998. Diploma (Masters), Physics from Universität Siegen in Germany 1995. Member of the High Energy Physic Computing Group developing core software for the ATLAS experiment at CERN. Provided design, development and deployment of robust functional software needed by researchers to conduct and analyze physics experiments, with particular emphasis on database (Oracle, MySQL, SciDB), Input/Output

  7. Microsoft PowerPoint - Closing Summary_Brian Horn_Pete Dessaules_James Crabtree

    National Nuclear Security Administration (NNSA)

    Summary/Closing Discussions Pete Dessaules, NNSA Brian Horn, NRC James Crabtree, NNSA Summary  Multiple presentations focused on the relevancy and significance of NMMSS to: - National security decisions - International commitments and obligations - Mission and programmatic planning - Commerce - Safety and health - Licensing/compliance  Transmit matching issues, e.g., - Batch ID 2 Summary (Cont'd)  Importance and complexities associated with obligations tracking - Tracking the entire

  8. LBL Program Category In Focus

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

    Indoor Air Quality November 19, 2013 by philbutler For decades, teams of Berkeley Lab scientists have investigated the ways that indoor air quality affects human health-from cognitive ability to personal comfort. Bringing Solutions to the Developing World August 20, 2013 by admin Berkeley Lab: Bringing Solutions to the Developing World Efficient Cookstoves for Darfur, Ethiopia Women living in refugee camps in Darfur often walk miles to gather firewood. Volunteer Scott Sadlon trained workers in

  9. Van Norman Residences Space Heating Low Temperature Geothermal...

    Open Energy Info (EERE)

    Norman Residences Space Heating Low Temperature Geothermal Facility Jump to: navigation, search Name Van Norman Residences Space Heating Low Temperature Geothermal Facility...

  10. R. Bruce van Dover > ProfessorMaterials Science and Engineering...

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

    Topical Group on Magnetism and Its Applications, a unit of the American Physical Society. Research Prof. van Dover's research is currently focused on exploring the properties of...

  11. Van Andel Research Institute, Los Alamos National Laboratory...

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

    Computational model to study lung cancer Van Andel Research Institute, Los Alamos National Laboratory to develop detailed computational model to study lung cancer Scientists are...

  12. Van Wert County, Ohio: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    County, Ohio Convoy, Ohio Delphos, Ohio Elgin, Ohio Middle Point, Ohio Ohio City, Ohio Scott, Ohio Van Wert, Ohio Venedocia, Ohio Willshire, Ohio Wren, Ohio Retrieved from "http:...

  13. Direct observation of adsorption geometry for the van der Waals...

    Office of Scientific and Technical Information (OSTI)

    Weak van der Waals adsorption of -conjugated hydrocarbon molecules onto the gold surface, Au(111), is one of the essential processes in constructing organic-metal interfaces in ...

  14. Development of horn antenna mixer array with internal local oscillator module for microwave imaging diagnostics

    SciTech Connect (OSTI)

    Kuwahara, D.; Ito, N.; Nagayama, Y.; Yoshinaga, T.; Yamaguchi, S.; Yoshikawa, M.; Kohagura, J.; Sugito, S.; Kogi, Y.; Mase, A.

    2014-11-15

    A new antenna array is proposed in order to improve the sensitivity and complexity of microwave imaging diagnostics systems such as a microwave imaging reflectometry, a microwave imaging interferometer, and an electron cyclotron emission imaging. The antenna array consists of five elements: a horn antenna, a waveguide-to-microstrip line transition, a mixer, a local oscillation (LO) module, and an intermediate frequency amplifier. By using an LO module, the LO optics can be removed, and the supplied LO power to each element can be equalized. We report details of the antenna array and characteristics of a prototype antenna array.

  15. United Parcel Service Evaluates Hybrid Electric Delivery Vans (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2010-02-01

    This fact sheet describes how the National Renewable Energy Laboratory's Fleet Test and Evaluation team evaluated the 12-month, in-service performance of six Class 4 hybrid electric delivery vans - fueled by regular diesel - and six comparable conventional diesel vans operated by the United Parcel Service.

  16. Isotope separation by photodissociation of Van der Waal's molecules

    DOE Patents [OSTI]

    Lee, Yuan T.

    1977-01-01

    A method of separating isotopes based on the dissociation of a Van der Waal's complex. A beam of molecules of a Van der Waal's complex containing, as one partner of the complex, a molecular species in which an element is present in a plurality of isotopes is subjected to radiation from a source tuned to a frequency which will selectively excite vibrational motion by a vibrational transition or through electronic transition of those complexed molecules of the molecular species which contain a desired isotope. Since the Van der Waal's binding energy is much smaller than the excitational energy of vibrational motion, the thus excited Van der Waal's complex dissociate into molecular components enriched in the desired isotope. The recoil velocity associated with vibrational to translational and rotational relaxation will send the separated molecules away from the beam whereupon the product enriched in the desired isotope can be separated from the constituents of the beam.

  17. Graded Interface Models for more accurate Determination of van...

    Office of Scientific and Technical Information (OSTI)

    length scale property variations. Authors: van Benthem, Klaus 1 ; Tan, Guolong 2 ; French, Roger H 3 ; DeNoyer, Linda K 4 ; Podgornik, Rudolf 5 ; Parsegian, V Adrian 5...

  18. Isotopic Analysis At Separation Creek Area (Van Soest, Et Al...

    Open Energy Info (EERE)

    Usefulness useful DOE-funding Unknown References M. C. van Soest, B. M. Kennedy, W. C. Evans, R. H. Mariner (2002) Mantle Helium And Carbon Isotopes In Separation Creek...

  19. A P van den Berg | Open Energy Information

    Open Energy Info (EERE)

    to: navigation, search Name: A. P. van den Berg Place: Heerenveen, Netherlands Zip: P.O. Box 68, 8440 AB Sector: Geothermal energy, Solar Product: Designs and installs soil...

  20. April VanCamp Gil | Department of Energy

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

    A Colorado native, Dr. April VanCamp Gil is happy to be home where she manages the historic Grand Junction, Colorado, Office, which traces its origins to World War II and the ...

  1. Bakery Switches to Propane Vans | Argonne National Laboratory

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

    Bakery Switches to Propane Vans By Jo Napolitano * April 21, 2016 Tweet EmailPrint A switch to propane from diesel by a major Midwest bakery fleet showed promising results, ...

  2. Van Andel Research Institute, Los Alamos National Laboratory to develop

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

    detailed computational model to study lung cancer Computational model to study lung cancer Van Andel Research Institute, Los Alamos National Laboratory to develop detailed computational model to study lung cancer Scientists are developing a new tool to better study one of the deadliest types of lung cancer. September 14, 2015 Even the most carefully crafted science projects starts with a rough brainstorm session. This whiteboard is from an early Los Alamos National Laboratory and Van Andel

  3. Study finds surprising variability in shape of Van Allen Belts

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

    Study finds surprising variability in shape of Van Allen Belts Study finds surprising variability in shape of Van Allen Belts Understanding the shape and size of the belts, which shrink and swell in response to magnetic storms coming from the sun, is crucial for protecting our technology in space. February 23, 2016 1. The traditional idea of the radiation belts includes a larger, more dynamic outer belt and a smaller, more stable inner belt with an empty slot region separating the two. However,

  4. DOE - Office of Legacy Management -- Purdue University Van Der Graaf

    Office of Legacy Management (LM)

    Laboratory - IN 02 Purdue University Van Der Graaf Laboratory - IN 02 FUSRAP Considered Sites Site: PURDUE UNIVERSITY VAN DER GRAAF LABORATORY (IN.02) Eliminated from further consideration under FUSRAP Designated Name: Not Designated Alternate Name: None Location: Lafayette , Indiana IN.02-1 Evaluation Year: 1987 IN.02-3 Site Operations: Conducted research and development operations involving small quantities of radioactive material. IN.02-3 Site Disposition: Eliminated - NRC licensed -

  5. OSTIblog Articles in the James Van Allen Topic | OSTI, US Dept of Energy

    Office of Scientific and Technical Information (OSTI)

    Office of Scientific and Technical Information James Van Allen Topic James Van Allen - Space Pioneer by Kathy Chambers 10 Jun, 2016 in james_van_allen_wcaption.jpg James Van Allen's space instrumentation innovations and his advocacy for Earth satellite planetary missions ensured his place among the early leaders of space exploration. After World War II, Van Allen begin his atmospheric research at the Johns Hopkins University Applied Physics Laboratory and Brookhaven National Laboratory. He

  6. Microsoft PowerPoint - 12_BRIAN_HORN_NRC and DOE recognition May 13 2014.ppt [Compatibility Mode]

    National Nuclear Security Administration (NNSA)

    3 Recognitions Brian Horn, NRC Pete Dessaules, DOE/NNSA NRC requirements for Inventory Reporting and Reconciliation  Report Inventory to NMMSS * < 30 days - IAEA selected facilities, Cat-1 sites * < 45 days - Cat-2 sites * < 60 days - Reactors, Cat-3 sites, >350 gram licensees * Prior to March 31 st - licensees authorized < 350 grams fissile * As of Sept. 30 th - Foreign obligated source material holdings  Reconcile inventory with NMMSS within 30 days of submission 2

  7. Microsoft PowerPoint - Recent NMSS Interactions with Foreign Countries and Organizationss_Brian Horn_Pete Dessaules [Compatibil

    National Nuclear Security Administration (NNSA)

    Feedback from others Brian Horn, Nuclear Regulatory Commission Pete Dessaules, Department of Energy, National Nuclear Security Administration Feedback from others  Recent routine interactions with representatives of - International Atomic Energy Agency - Australia - Canada - European Commission - Japan - Taiwan 2 How industry reports an export  Example #1, the export of fuel assemblies 3 Number of Lines License Number Header Gross Weight Line Number Batch Number Number of Items Comp Code

  8. Microsoft PowerPoint - Reporting Small Quantities to NMMSS_Brian Horn_Suzanne Ani [Compatibility Mode]

    National Nuclear Security Administration (NNSA)

    Small Quantities to NMMSS Brian Horn, Suzanne Ani, Nuclear Regulatory Commission Overview  Introduction  Reportable Units  One-Party Transactions (A-M)  Reporting to NMMSS 2 Introduction  NRC regulations require each licensee who transfers or receives SNM to complete a DOE/NRC Form 741, Nuclear Material Transaction Report  DOE also requires NRC licensees to report to NMMSS all receipts, transfers, and inventories of government-owned, -leased, or -loaned material in their

  9. Twelve-Month Evaluation of UPS Diesel Hybrid Electric Delivery Vans

    SciTech Connect (OSTI)

    Lammert, M.

    2009-12-01

    Results of an NREL study of a parallel hybrid electric-diesel propulsion system in United Parcel Service-operated delivery vans show that the hybrids had higher fuel economy than standard diesel vans.

  10. Natural Gas Vans To Help Clear the Air In Metro Denver

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

    SuperShuttle purchased the 10 compressed natural gas (CNG) vans to transport passengers ... Five of the 10 new vans are dedicated fuel vehicles, which means they run only on CNG. The ...

  11. NREL Study: Hybrid Delivery Vans Show Nearly 20 Percent Higher Fuel Economy

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

    - News Releases | NREL Study: Hybrid Delivery Vans Show Nearly 20 Percent Higher Fuel Economy September 28, 2012 The U.S. Department of Energy's (DOE)'s National Renewable Energy Laboratory (NREL) recently completed a performance evaluation report that showed significant fuel economy benefits of hybrid electric delivery vans compared to similar conventional vans. "During the on-road portion of our study, the hybrid vans demonstrated a 13 to 20 percent higher fuel economy than the

  12. Research at the BNL Tandem Van de Graaff Facility, 1980

    SciTech Connect (OSTI)

    Not Available

    1981-03-01

    Research programs at the Brookhaven Van de Graaff accelerators are summarized. Major accomplishments of the laboratory are discussed including quasielastic reactions, high-spin spectroscopy, yrast spectra, fusion reactions, and atomic physics. The outside user program at the Laboratory is discussed. Research proposed for 1981 is outlined. (GHT)

  13. (Physics and chemistry of van der Waals particles)

    SciTech Connect (OSTI)

    Klots, C.E.

    1990-10-08

    Accounts are given of the two major international conferences on the physics and chemistry of small particles, commonly referred to as van der Waals particles. Details of special interest to Oak Ridge National Laboratory personnel are cited. Information exchanges at Freiburg and Paris are described.

  14. Excited nucleon as a van der Waals system of partons

    SciTech Connect (OSTI)

    Jenkovszky, L. L.; Muskeyev, A. O. Yezhov, S. N.

    2012-06-15

    Saturation in deep inelastic scattering (DIS) and deeply virtual Compton scattering (DVCS) is associated with a phase transition between the partonic gas, typical of moderate x and Q{sup 2}, and partonic fluid appearing at increasing Q{sup 2} and decreasing Bjorken x. We suggest the van der Waals equation of state to describe properly this phase transition.

  15. Microsoft PowerPoint - 1_BRIAN_HORN_NMMSS Overrview-May 12 2014.ppt [Compatibility Mode]

    National Nuclear Security Administration (NNSA)

    Monday, May 12, 2014 Pete Dessaules Brian Horn NMMSS-Training Topics * NMMSS Performance 9:30-10am * Obligation Accounting 10:30-11:00 * Reports to the IAEA 11:00-11:20 * Tips from NMMSS staff 11:20-11:40 2 This Afternoon * Denver Ballroom - NMMSS Subcommittee Meetings * Reactor 1:30-3:00 pm * Foreign Obligations 3:30-5:00 pm * Gold Coin Room - One-on-one NMMSS training 1:30-5:00 - NMMSS Overview talk by Pete Dessaules 3 4 NMMSS Overview Monday, May 12, 2014 Pete Dessaules 5 NMMSS * Nuclear *

  16. Microsoft PowerPoint - Reporting data to the IAEA by a newly selected facility_Brian Horn [Compatibility Mode]

    National Nuclear Security Administration (NNSA)

    data to the IAEA 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, according to Article 2 of the Protocol to the US/IAEA Safeguards Agreement, the IAEA had selected the URENCO USA centrifuge enrichment plant for the provisions of the Reporting Protocol - Letter received by U.S. Mission in Vienna Austria - Copies e-mailed to NRC and other Government Agencies  NRC

  17. Structure and dynamics of small van der Waals complexes

    SciTech Connect (OSTI)

    Loreau, J.

    2014-10-06

    We illustrate computational aspects of the calculation of the potential energy surfaces of small (up to five atoms) van der Waals complexes with high-level quantum chemistry techniques such as the CCSD(T) method with extended basis sets. We discuss the compromise between the required accuracy and the computational time. Further, we show how these potential energy surfaces can be fitted and used in dynamical calculations such as non-reactive inelastic scattering.

  18. LBL Success Stories - Energy Innovation Portal

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

    Graphic of a full-grown tree with many leaves. Lawrence Berkeley National Laboratory Success Stories These success stories highlight some of the effective licensing and partnership activity between Lawrence Berkeley National Laboratory and industry. Success Stories 1 Success Stories Category Title and Abstract Company / Laboratories Date Biomass and Biofuels Building Energy Efficiency Hydrogen and Fuel Cell Berkeley Lab Startup Brings Fuel Cells to the Developing World In some parts of the

  19. Interim Project Results: United Parcel Service's Second-Generation Hybrid-Electric Delivery Vans (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2012-01-01

    This fact sheet describes the performance evaluation of United Parcel Service's second-generation hybrid-electric delivery vans. The Fleet Test and Evaluation Team at the National Renewable Energy Laboratory (NREL) is evaluating the 18-month, in-service performance of 11 of these vans along with 11 comparable conventional diesel vans operating in Minneapolis, Minnesota. As a complement to the field study, the team recently completed fuel economy and emissions testing at NREL's Renewable Fuels and Lubricants (ReFUEL) laboratory.

  20. Application of Diffusion Monte Carlo to Materials Dominated by van der Waals Interactions

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

    Benali, Anouar; Shulenburger, Luke; Romero, Nichols A.; Kim, Jeongnim; von Lilienfeld, O. Anatole

    2014-06-12

    Van der Waals forces are notoriously difficult to account for from first principles. We perform extensive calculation to assess the usefulness and validity of diffusion quantum Monte Carlo when applied to van der Waals forces. We present results for noble gas solids and clusters - archetypical van der Waals dominated assemblies, as well as a relevant pi-pi stacking supramolecular complex: DNA + intercalating anti-cancer drug Ellipticine.

  1. Project Overview: United Parcel Service's Second-Generation Hybrid-Electric Delivery Vans (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2011-11-01

    This fact sheet describes UPS second generation hybrid-electric delivery vehicles as compared to conventional delivery vehicles. Medium-duty commercial vehicles such as moving trucks, beverage-delivery trucks, and package-delivery vans consume almost 2,000 gal of fuel per year on average. United Parcel Service (UPS) operates hybrid-electric package-delivery vans to reduce the fuel use and emissions of its fleet. In 2008, the National Renewable Energy Laboratory's (NREL's) Fleet Test and Evaluation Team evaluated the first generation of UPS' hybrid delivery vans. These hybrid vans demonstrated 29%-37% higher fuel economy than comparable conventional diesel vans, which contributed to UPS' decision to add second-generation hybrid vans to its fleet. The Fleet Test and Evaluation Team is now evaluating the 18-month, in-service performance of 11 second-generation hybrid vans and 11 comparable conventional diesel vans operated by UPS in Minneapolis, Minnesota. The evaluation also includes testing fuel economy and emissions at NREL's Renewable Fuels and Lubricants (ReFUEL) Laboratory and comparing diesel particulate filter (DPF) regeneration. In addition, a followup evaluation of UPS' first-generation hybrid vans will show how those vehicles performed over three years of operation. One goal of this project is to provide a consistent comparison of fuel economy and operating costs between the second-generation hybrid vans and comparable conventional vans. Additional goals include quantifying the effects of hybridization on DPF regeneration and helping UPS select delivery routes for its hybrid vans that maximize the benefits of hybrid technology. This document introduces the UPS second-generation hybrid evaluation project. Final results will be available in mid-2012.

  2. NREL Evaluates UPS Hybrid-Electric Van Performance - News Releases | NREL

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

    NREL Evaluates UPS Hybrid-Electric Van Performance New trucks deliver more than 28% fuel savings December 22, 2009 The U.S. Department of Energy's (DOE) National Renewable Energy Laboratory (NREL) has collected and analyzed fuel economy, maintenance and other vehicle performance data from UPS's first generation hybrid diesel step delivery vans powered by an Eaton Corp. electric hybrid propulsion system. The diesel hybrid delivery vans improved the on-road fuel economy by 28.9 percent resulting

  3. Ms Van T Nguyen | U.S. DOE Office of Science (SC)

    Office of Science (SC) Website

    Van T Nguyen Scientific User Facilities (SUF) Division SUF Home About Staff Dr. James B. Murphy What's New User Facilities Projects Accelerator & Detector Research Science Highlights Principal Investigators' Meetings BES Home Staff Ms. Van T Nguyen Print Text Size: A A A FeedbackShare Page Van T. Nguyen Program Manager Facility Coordination, Metrics, and Assessment Office of Basic Energy Sciences SC-22.3/Germantown Building U.S. Department of Energy 1000 Independence Avenue, SW Washington,

  4. Abigail Van Wassen > Graduate Student - Abruña Group > Researchers,

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

    Postdocs & Graduates > The Energy Materials Center at Cornell Abigail Van Wassen Graduate Student - Abruña Group arv45@cornell.edu

  5. Van Geet Off-Grid Home: An Integrated Approach to Energy Savings

    SciTech Connect (OSTI)

    2004-08-01

    The Van Geet home near Denver, Colorado, exemplifies the effectiveness of coupling energy conservation measures with renewable energy utilization in a modern residence.

  6. A background correction algorithm for Van Allen Probes MagEIS...

    Office of Scientific and Technical Information (OSTI)

    Title: A background correction algorithm for Van Allen Probes MagEIS electron flux measurements We describe an automated computer algorithm designed to remove background ...

  7. MiniBooNE Antineutrino Data Van Nguyen Columbia University

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

    Moriond EW 2008 Coherent NC π 0 Production in the MiniBooNE Antineutrino Data Van Nguyen Columbia University for the MiniBooNE collaboration Moriond EW 2008 2 Moriond EW 2008 At low energy, NC π 0 's can be created through resonant and coherent production:  Resonant NC π 0 production:  Coherent NC π 0 production: (Signature: π 0 which is highly forward-going) NC π 0 Production 3 Moriond EW 2008 Why study coherent NC π 0 production? ➔ NC π 0 events are the dominant bgd to osc

  8. Micro-Bubble Experiments at the Van de Graaff Accelerator

    SciTech Connect (OSTI)

    Sun, Z. J.; Wardle, Kent E.; Quigley, K. J.; Gromov, Roman; Youker, A. J.; Makarashvili, Vakhtang; Bailey, James; Stepinski, D. C.; Chemerisov, S. D.; Vandegrift, G. F.

    2015-02-01

    In order to test and verify the experimental designs at the linear accelerator (LINAC), several micro-scale bubble ("micro-bubble") experiments were conducted with the 3-MeV Van de Graaff (VDG) electron accelerator. The experimental setups included a square quartz tube, sodium bisulfate solution with different concentrations, cooling coils, gas chromatography (GC) system, raster magnets, and two high-resolution cameras that were controlled by a LabVIEW program. Different beam currents were applied in the VDG irradiation. Bubble generation (radiolysis), thermal expansion, thermal convection, and radiation damage were observed in the experiments. Photographs, videos, and gas formation (O2 + H2) data were collected. The micro-bubble experiments at VDG indicate that the design of the full-scale bubble experiments at the LINAC is reasonable.

  9. A crossover in anisotropic nanomechanochemistry of van der Waals crystals

    SciTech Connect (OSTI)

    Shimamura, Kohei; Misawa, Masaaki; Li, Ying; Kalia, Rajiv K.; Nakano, Aiichiro; Vashishta, Priya; Shimojo, Fuyuki

    2015-12-07

    In nanoscale mechanochemistry, mechanical forces selectively break covalent bonds to essentially control chemical reactions. An archetype is anisotropic detonation of layered energetic molecular crystals bonded by van der Waals (vdW) interactions. Here, quantum molecular dynamics simulations reveal a crossover of anisotropic nanomechanochemistry of vdW crystal. Within 10{sup −13} s from the passage of shock front, lateral collision produces NO{sub 2} via twisting and bending of nitro-groups and the resulting inverse Jahn-Teller effect, which is mediated by strong intra-layer hydrogen bonds. Subsequently, as we transition from heterogeneous to homogeneous mechanochemical regimes around 10{sup −12} s, shock normal to multilayers becomes more reactive, producing H{sub 2}O assisted by inter-layer N-N bond formation. These time-resolved results provide much needed atomistic understanding of nanomechanochemistry that underlies a wider range of technologies.

  10. Heterostructures based on inorganic and organic van der Waals systems

    SciTech Connect (OSTI)

    Lee, Gwan-Hyoung; Lee, Chul-Ho; Zande, Arend M. van der; Han, Minyong; Cui, Xu; Arefe, Ghidewon; Hone, James; Nuckolls, Colin; Heinz, Tony F.; Kim, Philip

    2014-09-01

    The two-dimensional limit of layered materials has recently been realized through the use of van der Waals (vdW) heterostructures composed of weakly interacting layers. In this paper, we describe two different classes of vdW heterostructures: inorganic vdW heterostructures prepared by co-lamination and restacking; and organic-inorganic hetero-epitaxy created by physical vapor deposition of organic molecule crystals on an inorganic vdW substrate. Both types of heterostructures exhibit atomically clean vdW interfaces. Employing such vdW heterostructures, we have demonstrated various novel devices, including graphene/hexagonal boron nitride (hBN) and MoS{sub 2} heterostructures for memory devices; graphene/MoS{sub 2}/WSe{sub 2}/graphene vertical p-n junctions for photovoltaic devices, and organic crystals on hBN with graphene electrodes for high-performance transistors.

  11. Ground Truth, Magnitude Calibration and Regional Phase Propagation and Detection in the Middle East and Horn of Africa

    SciTech Connect (OSTI)

    Nyblade, A; Brazier, R; Adams, A; Park, Y; Rodgers, A; Al-Amri, A

    2007-07-08

    In this project, we are exploiting several seismic data sets to improve U.S. operational capabilities to monitor for low yield nuclear tests across the Middle East (including the Iranian Plateau, Zagros Mountains, Arabian Peninsula, Turkish Plateau, Gulf of Aqaba, Dead Sea Rift) and the Horn of Africa (including the northern part of the East African Rift, Afar Depression, southern Red Sea and Gulf of Aden). The data sets are being used to perform three related tasks. (1) We are determining moment tensors, moment magnitudes and source depths for regional events in the magnitude 3.0 to 6.0 range. (2) These events are being used to characterize high-frequency (0.5-16 Hz) regional phase attenuation and detection thresholds, especially from events in Iran recorded at stations across the Arabian Peninsula. (3) We are collecting location ground truth at GT5 (local) and GT20 (regional) levels for seismic events with M > 2.5, including source geometry information and source depths. Towards meeting these objectives, seismograms from earthquakes in the Zagros Mountains recorded at regional distances have been inverted for moment tensors, which have then been used to create synthetic seismograms to determine the source depths of the earthquakes via waveform matching. The source depths have been confirmed by modeling teleseismic depth phases recorded on GSN and IMS stations. Early studies of the distribution of seismicity in the Zagros region found evidence for earthquakes in the upper mantle. But subsequent relocations of teleseismic earthquakes suggest that source depths are generally much shallower, lying mainly within the upper crust. All of the regional events studied so far nucleated within the upper crust, and most of the events have thrust mechanisms. The source mechanisms for these events are being used to characterize high-frequency (0.5-16 Hz) regional phase attenuation and detection thresholds for broadband seismic stations in the Arabian Peninsula, including IMS

  12. Thirty-Six Month Evaluation of UPS Diesel Hybrid-Electric Delivery Vans

    SciTech Connect (OSTI)

    Lammert, M.; Walkowicz, K.

    2012-03-01

    This evaluation compared six hybrids and six standard diesels in UPS facilities in Phoenix, Arizona. Dispatch and maintenance practices are the same at both facilities. GPS logging, fueling, and maintenance records are used to evaluate the performance of these step delivery vans. The hybrids' average monthly mileage rate was 18% less than the diesel vans. The hybrids consistently were driven a fewer number of miles throughout the evaluation period. The hybrids idled more and operating at slower speeds than the diesels, and the diesels spent slightly more time operating at greater speeds, accounting for much of the hybrids fewer monthly miles. The average fuel economy for the hybrid vans is 13.0 mpg, 23% greater than the diesel vans 10.6 mpg. Total hybrid maintenance cost/mile of $0.141 was 9% more than the $0.130 for the diesel vans. Propulsion-related maintenance cost/mile of $0.037 for the hybrid vans was 25% more than the $0.029 for the diesel vans. Neither difference was found to be statistically significant. The hybrid group had a cumulative average of 96.3% uptime, less than the diesel group's 99.0% uptime. The hybrids experienced troubleshooting and recalibration issues related to prototype components that were primarily responsible for the lower uptime figures.

  13. FIA-14-0029 - In the Matter of Richard van Dijk | Department of Energy

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

    9 - In the Matter of Richard van Dijk FIA-14-0029 - In the Matter of Richard van Dijk On June 5, 2014, the Department of Energy's (DOE) Office of Hearings and Appeals (OHA) denied a Freedom of Information Act Appeal (FOIA) filed by Richard van Dijk (Appellant) of a determination issued by the Bonneville Power Administration (BPA). In its Appeal, the Appellant challenged the BPA's withholdings on pages 86-95 under Exemption 5 and on page 101 as non-responsive. OHA found that BPA's withholdings

  14. Spin-Flavor van der Waals Forces and NN interaction (Conference...

    Office of Scientific and Technical Information (OSTI)

    Title: Spin-Flavor van der Waals Forces and NN interaction A major goal in Nuclear Physics ... Because of this the resulting nuclear forces at sufficiently large distances correspond to ...

  15. Graphene on boron-nitride: Moir pattern in the van der Waals energy

    SciTech Connect (OSTI)

    Neek-Amal, M. [Department of Physics, University of Antwerpen, Groenenborgerlaan 171, B-2020 Antwerpen (Belgium); Department of Physics, Shahid Rajaee University, Lavizan, Tehran 16788 (Iran, Islamic Republic of); Peeters, F. M. [Department of Physics, University of Antwerpen, Groenenborgerlaan 171, B-2020 Antwerpen (Belgium)

    2014-01-27

    The spatial dependence of the van der Waals (vdW) energy between graphene and hexagonal boron-nitride (h-BN) is investigated using atomistic simulations. The van der Waals energy between graphene and h-BN shows a hexagonal superlattice structure identical to the observed Moir pattern in the local density of states, which depends on the lattice mismatch and misorientation angle between graphene and h-BN. Our results provide atomistic features of the weak van der Waals interaction between graphene and BN which are in agreement with experiment and provide an analytical expression for the size of the spatial variation of the weak van der Waals interaction. We also found that the A-B-lattice symmetry of graphene is broken along the armchair direction.

  16. Structural and Vibrational Properties of Liquid Water from van der Waals

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

    Density Functionals | Argonne Leadership Computing Facility Structural and Vibrational Properties of Liquid Water from van der Waals Density Functionals Authors: Zhang, C., Wu, J., Gygi, F., Galli, G. We present results for the structural and vibrational properties of the water molecule, water dimer, and liquid water at the experimental equilibrium density, as obtained with several van der Waals density functionals. The functional form originally proposed by Dion et al. [ Phys. Rev. Lett.

  17. Structural and functional adaptation of vancomycin resistance VanT serine racemases

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

    Meziane-Cherif, Djalal; Stogios, Peter J.; Evdokimova, Elena; Egorova, Olga; Savchenko, Alexei; Courvalin, Patrice

    2015-08-11

    Vancomycin resistance in Gram-positive bacteria results from the replacement of the D-alanyl–D-alanine target of peptidoglycan precursors with D-alanyl–D-lactate or D-alanyl–D-serine (D-Ala-D-Ser), to which vancomycin has low binding affinity. VanT is one of the proteins required for the production of D-Ala-D-Ser-terminating precursors by converting L-Ser to D-Ser. VanT is composed of two domains, an N-terminal membrane-bound domain, likely involved in L-Ser uptake, and a C-terminal cytoplasmic catalytic domain which is related to bacterial alanine racemases. To gain insight into the molecular function of VanT, the crystal structure of the catalytic domain of VanTG from VanG-type resistant Enterococcus faecalis BM4518 wasmore » determined. The structure showed significant similarity to type III pyridoxal 5'-phosphate (PLP)-dependent alanine racemases, which are essential for peptidoglycan synthesis. Comparative structural analysis between VanTG and alanine racemases as well as site-directed mutagenesis identified three specific active site positions centered around Asn696 which are responsible for theL-amino acid specificity. This analysis also suggested that VanT racemases evolved from regular alanine racemases by acquiring additional selectivity toward serine while preserving that for alanine. The 4-fold-lower relative catalytic efficiency of VanTG against L-Ser versus L-Ala implied that this enzyme relies on its membrane-bound domain for L-Ser transport to increase the overall rate of D-Ser production. These findings illustrate how vancomycin pressure selected for molecular adaptation of a housekeeping enzyme to a bifunctional enzyme to allow for peptidoglycan remodeling, a strategy increasingly observed in antibiotic-resistant bacteria.« less

  18. Nano-photonic phenomena in van der Waals heterostructures | MIT-Harvard

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

    Center for Excitonics Nano-photonic phenomena in van der Waals heterostructures March 31, 2015 at 4:30 PM/ RLE Haus 36-428 Dmitri Basov Department of Physics, University of California, San Diego Dimitri_basov_01 abstract: Layered van der Waals (vdW) crystals consist of individual atomic planes weakly coupled by vdW interaction, similar to graphene monolayers in bulk graphite. These materials can harbor superconductivity and ferromagnetism with high transition temperatures, emit light and

  19. Structural and functional adaptation of vancomycin resistance VanT serine racemases

    SciTech Connect (OSTI)

    Meziane-Cherif, Djalal; Stogios, Peter J.; Evdokimova, Elena; Egorova, Olga; Savchenko, Alexei; Courvalin, Patrice

    2015-08-11

    Vancomycin resistance in Gram-positive bacteria results from the replacement of the D-alanyl–D-alanine target of peptidoglycan precursors with D-alanyl–D-lactate or D-alanyl–D-serine (D-Ala-D-Ser), to which vancomycin has low binding affinity. VanT is one of the proteins required for the production of D-Ala-D-Ser-terminating precursors by converting L-Ser to D-Ser. VanT is composed of two domains, an N-terminal membrane-bound domain, likely involved in L-Ser uptake, and a C-terminal cytoplasmic catalytic domain which is related to bacterial alanine racemases. To gain insight into the molecular function of VanT, the crystal structure of the catalytic domain of VanTG from VanG-type resistant Enterococcus faecalis BM4518 was determined. The structure showed significant similarity to type III pyridoxal 5'-phosphate (PLP)-dependent alanine racemases, which are essential for peptidoglycan synthesis. Comparative structural analysis between VanTG and alanine racemases as well as site-directed mutagenesis identified three specific active site positions centered around Asn696 which are responsible for theL-amino acid specificity. This analysis also suggested that VanT racemases evolved from regular alanine racemases by acquiring additional selectivity toward serine while preserving that for alanine. The 4-fold-lower relative catalytic efficiency of VanTG against L-Ser versus L-Ala implied that this enzyme relies on its membrane-bound domain for L-Ser transport to increase the overall rate of D-Ser production. These findings illustrate how vancomycin pressure selected for molecular adaptation of a housekeeping enzyme to a bifunctional enzyme to allow for peptidoglycan remodeling, a strategy increasingly observed in antibiotic-resistant bacteria.

  20. Comments by Julie Crenshaw Van Fleet on DOE/SEA-04, Special Environmental

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

    Analysis: For Actions Taken Under U.S. Department of Energy Emergency Orders Regarding Operation of the Potomac River Generating Station in Alexandria, Virginia, November 2006 | Department of Energy Julie Crenshaw Van Fleet on DOE/SEA-04, Special Environmental Analysis: For Actions Taken Under U.S. Department of Energy Emergency Orders Regarding Operation of the Potomac River Generating Station in Alexandria, Virginia, November 2006 Comments by Julie Crenshaw Van Fleet on DOE/SEA-04, Special

  1. Energy Lab to Evaluate Performance of UPS Hybrid-Electric Vans - News

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

    Releases | NREL Energy Lab to Evaluate Performance of UPS Hybrid-Electric Vans New delivery trucks expected to save fuel, reduce harmful emissions August 23, 2007 The U.S. Department of Energy's (DOE) National Renewable Energy Laboratory (NREL) is collecting and analyzing maintenance, fuel economy and other vehicle performance data from 50 UPS hybrid diesel step delivery vans powered by an Eaton Corp. electric hybrid propulsion system. Funded by the DOE's Advanced Vehicle Testing Activity

  2. DOE - Office of Legacy Management -- John Van Range Co Div of Edwards

    Office of Legacy Management (LM)

    Manufacturing - OH 40 John Van Range Co Div of Edwards Manufacturing - OH 40 FUSRAP Considered Sites Site: JOHN VAN RANGE CO., DIV. OF EDWARDS MANUFACTURING (OH.40 ) Eliminated from consideration under FUSRAP Designated Name: Not Designated Alternate Name: None Location: Cincinnati , Ohio OH.40-1 Evaluation Year: 1994 OH.40-2 OH.40-3 Site Operations: Punched washers from uranium metal slabs in the mid-1950s. OH.40-1 Site Disposition: Eliminated - Potential for contamination remote based on

  3. Comparison of Different Load Road Implementation Strategies on Fuel Economy of USPS Step Vans

    Broader source: Energy.gov [DOE]

    An alternative form of measuring road loads, instead of using a chassis dynamometer and a method described in 40 CFR section 86.1229-85, was conducted on on-road coastdowns, and regression analysis was used to determine the characteristics of the two U.S. Postal Service step vans, one of which was a hybrid model

  4. Ford Van Dyke: Compressed Air Management Program Leads to Improvements that Reduce Energy Consumption at an Automotive Transmission Plant

    SciTech Connect (OSTI)

    2010-06-25

    Staff at the Ford Van Dyke Transmission Plant in Sterling Heights, Michigan, have increased the efficiency of the plant’s compressed air system to enhance its performance while saving energy and improving production.

  5. Data Assimilation J. S. Van Baelen(a) National Center for Atmospheric Research(b)

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

    S. Van Baelen(a) National Center for Atmospheric Research(b) Boulder, CO 80307-3000 Introduction of wind profilers to provide accurate estimates of the momentum and heat fluxes might be their most important contribution yet to the field of atmospheric dynamic studies, especially when those measurements can be ingested into circulation models. In particular, flux measurements in the planetary boundary layer can provide critically needed information on the pel turbulent structures and their effect

  6. FTP Emissions Test Results from Flexible-Fuel Methanol Dodge Spirits and Ford Econoline Vans

    Alternative Fuels and Advanced Vehicles Data Center [Office of Energy Efficiency and Renewable Energy (EERE)]

    FTP Emissions Test Results from Flexible-Fuel Methanol Dodge Spirits and Ford Econoline Vans Kenneth J. Kelly, Brent K. Bailey, and Timothy C. Coburn National Renewable Energy Laboratory Wendy Clark Automotive Testing Laboratories, Inc. Leslie Eudy ManTech Environmental Technology, Inc. Peter Lissiuk Environmental Research and Development Corp. Presented at Society for Automotive Engineers International Spring Fuels and Lubricants Meeting Dearborn, MI May 6-8, 1996 The work described here was

  7. The role of collective motion in the ultrafast charge transfer in van der Waals heterostructures

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

    Wang, Han; Bang, Junhyeok; Sun, Yiyang; West, Damien; Meunier, Vincent; Zhang, Shengbai; Liang, Linagbo

    2016-05-10

    Here, the success of van der Waals (vdW) heterostructures, made of graphene, metal dichalcogenides, and other layered materials, hinges on the understanding of charge transfer across the interface as the foundation for new device concepts and applications. In contrast to conventional heterostructures, where a strong interfacial coupling is essential to charge transfer, recent experimental findings indicate that vdW heterostructues can exhibit ultra-fast charge transfer despite the weak binding of the heterostructure. Using time-dependent density functional theory molecular dynamics, we identify a strong dynamic coupling between the vdW layers associated with charge transfer. This dynamic coupling results in rapid nonlinear coherentmore » charge oscillations which constitute a purely electronic phenomenon and are shown to be a general feature of vdW heterostructures provided they have a critical minimum dipole coupling. Application to MoS2/WS2 heterostructure yields good agreement with experiment, indicating near complete charge transfer within a timescale of 100 fs.The success of van der Waals heterostructures made of graphene, metal dichalcogenides and other layered materials, hinges on the understanding of charge transfer across the interface as the foundation for new device concepts and applications. In contrast to conventional heterostructures, where a strong interfacial coupling is essential to charge transfer, recent experimental findings indicate that van der Waals heterostructues can exhibit ultrafast charge transfer despite the weak binding of these heterostructures. Here we find, using time-dependent density functional theory molecular dynamics, that the collective motion of excitons at the interface leads to plasma oscillations associated with optical excitation. By constructing a simple model of the van der Waals heterostructure, we show that there exists an unexpected criticality of the oscillations, yielding rapid charge transfer across the

  8. A polynomial approach to the van Everdingen-Hurst dimensionless variables for water encroachment

    SciTech Connect (OSTI)

    Klins, M.A.; Bouchard, A.J.; Cable, C.L.

    1988-02-01

    Traditional water-influx calculations rely on accurate values of the van Everdingen and Hurst dimensionless variables rho/sub D/ and q/sub D/. The authors presented six sets of simple polynomials that provide a fast, simple method to determine rho/sub D/, rho/sub D'/, and q/sub D/ for finite or infinite radial aquifers. The results yield values as accurate as the original tables and are up to 15 times more efficient.

  9. Eighteen-Month Final Evaluation of UPS Second Generation Diesel Hybrid-Electric Delivery Vans

    SciTech Connect (OSTI)

    Lammert, M.; Walkowicz, K.

    2012-09-01

    A parallel hybrid-electric diesel delivery van propulsion system was evaluated at a UPS facility in Minneapolis using on-vehicle data logging, fueling, and maintenance records. Route and drive cycle analysis showed different duty cycles for hybrid vs. conventional delivery vans; routes were switched between the study groups to provide a valid comparison. The hybrids demonstrated greater advantage on the more urban routes; the initial conventional vans' routes had less dense delivery zones. The fuel economy of the hybrids on the original conventional group?s routes was 10.4 mpg vs. 9.2 mpg for the conventional group on those routes a year earlier. The hybrid group's fuel economy on the original hybrid route assignments was 9.4 mpg vs. 7.9 mpg for the conventional group on those routes a year later. There was no statistically significant difference in total maintenance cost per mile or for the vehicle total cost of operation per mile. Propulsion-related maintenance cost per mile was 77% higher for the hybrids, but only 52% more on a cost-per-delivery-day basis. Laboratory dynamometer testing demonstrated 13%-36% hybrid fuel economy improvement, depending on duty cycle, and up to a 45% improvement in ton-mi/gal. NOx emissions increased 21%-49% for the hybrids in laboratory testing.

  10. Spacecraft surface charging within geosynchronous orbit observed by the Van Allen Probes

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

    Sarno-Smith, Lois K.; Larsen, Brian A.; Skoug, Ruth M.; Liemohn, Michael W.; Breneman, Aaron; Wygant, John R.; Thomsen, Michelle F.

    2016-02-27

    Using the Helium Oxygen Proton Electron (HOPE) and Electric Field and Waves (EFW) instruments from the Van Allen Probes, we explored the relationship between electron energy fluxes in the eV and keV ranges and spacecraft surface charging. We present statistical results on spacecraft charging within geosynchronous orbit by L and MLT. An algorithm to extract the H+ charging line in the HOPE instrument data was developed to better explore intense charging events. Also, this study explored how spacecraft potential relates to electron number density, electron pressure, electron temperature, thermal electron current, and low-energy ion density between 1 and 210 eV.more » It is demonstrated that it is imperative to use both EFW potential measurements and the HOPE instrument ion charging line for examining times of extreme spacecraft charging of the Van Allen Probes. The results of this study show that elevated electron energy fluxes and high-electron pressures are present during times of spacecraft charging but these same conditions may also occur during noncharging times. Furthermore, we also show noneclipse significant negative charging events on the Van Allen Probes.« less

  11. Corrective Action Investigation Plan for Corrective Action Unit 527: Horn Silver Mine, Nevada Test Site, Nevada: Revision 1 (Including Records of Technical Change No.1, 2, 3, and 4)

    SciTech Connect (OSTI)

    U.S. Department of Energy, National Nuclear Security Administration Nevada Operations Office

    2002-12-06

    This Corrective Action Investigation Plan contains the U.S. Department of Energy (DOE), National Nuclear Security Administration Nevada Operations Office's approach to collect the data necessary to evaluate corrective action alternatives appropriate for the closure of Corrective Action Unit (CAU) 527, Horn Silver Mine, Nevada Test Site, Nevada, under the Federal Facility Agreement and Consent Order. Corrective Action Unit 527 consists of one Corrective Action Site (CAS): 26-20-01, Contaminated Waste Dump No.1. The site is located in an abandoned mine site in Area 26 (which is the most arid part of the NTS) approximately 65 miles northwest of Las Vegas. Historical documents may refer to this site as CAU 168, CWD-1, the Wingfield mine (or shaft), and the Wahmonie mine (or shaft). Historical documentation indicates that between 1959 and the 1970s, nonliquid classified material and unclassified waste was placed in the Horn Silver Mine's shaft. Some of the waste is known to be radioactive. Documentation indicates that the waste is present from 150 feet to the bottom of the mine (500 ft below ground surface). This CAU is being investigated because hazardous constituents migrating from materials and/or wastes disposed of in the Horn Silver Mine may pose a threat to human health and the environment as well as to assess the potential impacts associated with any potential releases from the waste. The results of this field investigation will support a defensible evaluation of corrective action alternatives in the corrective action decision document.

  12. Preparation of Simulated LBL Defects for Round Robin Experiment

    SciTech Connect (OSTI)

    Gerczak, Tyler J.; Baldwin, Charles A.; Hunn, John D.; Montgomery, Fred C.

    2015-12-01

    A critical characteristic of the TRISO fuel design is its ability to retain fission products. During reactor operation, the TRISO layers act as barriers to release of fission products not stabilized in the kernel. Each component of the TRISO particle and compact construction plays a unique role in retaining select fission products, and layer performance is often interrelated. The IPyC, SiC, and OPyC layers are barriers to the release of fission product gases such as Kr and Xe. The SiC layer provides the primary barrier to release of metallic fission products not retained in the kernel, as transport across the SiC layer is rate limiting due to the greater permeability of the IPyC and OPyC layers to many metallic fission products. These attributes allow intact TRISO coatings to successfully retain most fission products released from the kernel, with the majority of released fission products during operation being due to defective, damaged, or failed coatings. This dominant release of fission products from compromised particles contributes to the overall source term in reactor; causing safety and maintenance concerns and limiting the lifetime of the fuel. Under these considerations, an understanding of the nature and frequency of compromised particles is an important part of predicting the expected fission product release and ensuring safe and efficient operation.

  13. NERSC, LBL Researchers Share Materials Science Advances at APS

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

    Sherri Li, Abhinav Sarje, LBNL: Beyond Petascale with the HipGISAXS Software Suite Vidvuds Ozolins, Weston Nielson, University of California, Los Angeles: Beyond the Harmonic ...

  14. Progress report on LBL's numerical modeling studies on Cerro Prieto

    SciTech Connect (OSTI)

    Halfman-Dooley, S.E.; Lippman, M.J.; Bodvarsson, G.S.

    1989-04-01

    An exploitation model of the Cerro Prieto geothermal system is needed to assess the energy capacity of the field, estimate its productive lifetime and develop an optimal reservoir management plan. The model must consider the natural state (i.e., pre-exploitation) conditions of the system and be able to predict changes in the reservoir thermodynamic conditions (and fluid chemistry) in response to fluid production (and injection). This paper discusses the results of a three-dimensional numerical simulation of the natural state conditions of the Cerro Prieto field and compares computed and observed pressure and temperature/enthalpy changes for the 1973--1987 production period. 16 refs., 24 figs., 2 tabs.

  15. Joaquin Correa JoaquinCorrea@lbl.gov NERSC Data...

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

    Climate, Cosmology, Kbase, Materials, BioImaging, Your science Statistics, Machine Learning R, python, MLBase Image Processing MATLAB OMERO, Fiji Graph Analytics GraphX...

  16. Microsoft Word - LBL-ISM-2013 Signature-31July2013 ...

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

    DE-AC02-05CH11231 Lawrence Berkeley National Laboratory PUB-3140 Integrated Safety Management System Description Revision 8 i July 2013 Integrated Safety* Management...

  17. Thirty-Six Month Evaluation of UPS Diesel Hybrid Electric Delivery Vans

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

    Thirty-Six Month Evaluation of UPS Diesel Hybrid-Electric Delivery Vans M. Lammert and K. Walkowicz Technical Report NREL/TP-5400-53503 March 2012 NREL is a national laboratory of the U.S. Department of Energy, Office of Energy Efficiency & Renewable Energy, operated by the Alliance for Sustainable Energy, LLC. National Renewable Energy Laboratory 1617 Cole Boulevard Golden, Colorado 80401 303-275-3000 * www.nrel.gov Contract No. DE-AC36-08GO28308 Thirty-Six Month Evaluation of UPS Diesel

  18. Quantum chaos of the hydrogen atom in a generalized van der Waals potential

    SciTech Connect (OSTI)

    Ganesan, K.; Lakshmanan, M. (Centre for Nonlinear Dynamics, Department of Physics, Bharathidasan University, Tiruchirapalli-620024, Tamilnadu (India))

    1993-08-01

    The quantum manifestations of chaos in the hydrogen atom in a generalized van der Waals potential, which includes the celebrated quadratic-Zeeman-effect problem under an appropriate limiting condition, are studied in detail. Using group-theoretical methods, we derive the matrix elements in an algebraic form. As the Hamiltonian is scale invariant, we introduce an appropriate scaling parameter. By considering the unperturbed hydrogen-atom problem, we demonstrate that suitable changes in the scaling parameter stabilize different parts of the spectrum depending upon the parameter's value. For the present generalized van der Waals potential problem, we utilize this property of the scaling parameter effectively to improve the convergence of eigenvalues while diagonalizing the matrices for various parametric values. Then, we vary one of the system parameters in the range [0,3], study the level statistics, and observe a GOE-Poisson-Brody-Poisson-Brody-Poisson-GOE-type (where GOE means Gaussian orthogonal ensemble) of transition regime hitherto unidentified in any of the perturbed hydrogen-atom problems. Our results are not only in agreement with random-matrix-theory predictions but also justify classical and semiclassical investigations.

  19. Binding and Diffusion of Lithium in Graphite: Quantum Monte Carlo Benchmarks and Validation of van der Waals Density Functional Methods

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

    Ganesh, P.; Kim, Jeongnim; Park, Changwon; Yoon, Mina; Reboredo, Fernando A.; Kent, Paul R. C.

    2014-11-03

    In highly accurate diffusion quantum Monte Carlo (QMC) studies of the adsorption and diffusion of atomic lithium in AA-stacked graphite are compared with van der Waals-including density functional theory (DFT) calculations. Predicted QMC lattice constants for pure AA graphite agree with experiment. Pure AA-stacked graphite is shown to challenge many van der Waals methods even when they are accurate for conventional AB graphite. Moreover, the highest overall DFT accuracy, considering pure AA-stacked graphite as well as lithium binding and diffusion, is obtained by the self-consistent van der Waals functional vdW-DF2, although errors in binding energies remain. Empirical approaches based onmore » point charges such as DFT-D are inaccurate unless the local charge transfer is assessed. Our results demonstrate that the lithium carbon system requires a simultaneous highly accurate description of both charge transfer and van der Waals interactions, favoring self-consistent approaches.« less

  20. Wave-driven butterfly distribution of Van Allen belt relativistic electrons

    SciTech Connect (OSTI)

    Xiao, Fuliang; Yang, Chang; Su, Zhenpeng; Zhou, Qinghua; He, Zhaoguo; He, Yihua; Baker, D. N.; Spence, H. E.; Funsten, H. O.; Blake, J. B.

    2015-10-05

    Van Allen radiation belts consist of relativistic electrons trapped by Earth's magnetic field. Trapped electrons often drift azimuthally around Earth and display a butterfly pitch angle distribution of a minimum at 90° further out than geostationary orbit. This is usually attributed to drift shell splitting resulting from day–night asymmetry in Earth’s magnetic field. However, direct observation of a butterfly distribution well inside of geostationary orbit and the origin of this phenomenon have not been provided so far. Here we report high-resolution observation that a unusual butterfly pitch angle distribution of relativistic electrons occurred within 5 Earth radii during the 28 June 2013 geomagnetic storm. In conclusion, simulation results show that combined acceleration by chorus and magnetosonic waves can successfully explain the electron flux evolution both in the energy and butterfly pitch angle distribution. Finally, the current provides a great support for the mechanism of wave-driven butterfly distribution of relativistic electrons.

  1. High-field de Haas{endash}van Alphen measurements in Pd

    SciTech Connect (OSTI)

    Vuillemin, J.J. [Department of Physics, University of Arizona, Tucson, Arizona 85721 (United States)] [Department of Physics, University of Arizona, Tucson, Arizona 85721 (United States); Harrison, N. [National High Magnetic Field Laboratory, Los Alamos National Laboratory, LANL, Los Alamos, New Mexico 87545 (United States)] [National High Magnetic Field Laboratory, Los Alamos National Laboratory, LANL, Los Alamos, New Mexico 87545 (United States); Goodrich, R.G. [Department of Physics and Astronomy, Louisiana State University, Baton Rouge, Louisiana 70803 (United States)] [Department of Physics and Astronomy, Louisiana State University, Baton Rouge, Louisiana 70803 (United States)

    1999-05-01

    The de Haas{endash}van Alphen (dHvA) effect in 99.999{percent} pure palladium has been observed in pulsed fields up to 60 T directed along [100]. We report a dHvA frequency of 73.5 kT with a cyclotron effective mass=12.5m{sub 0}. Such a frequency is not reported previously but is predicted by band theory for the open hole sheet of the Fermi surface. We also observe strong harmonic content near 50 T for the electron sheet and this is interpreted in terms of a field-dependent {ital g} factor. {copyright} {ital 1999} {ital The American Physical Society}

  2. Phase diagram of Rydberg atoms with repulsive van der Waals interaction

    SciTech Connect (OSTI)

    Osychenko, O. N.; Astrakharchik, G. E.; Boronat, J.; Lutsyshyn, Y.; Lozovik, Yu. E.

    2011-12-15

    We report a quantum Monte Carlo calculation of the phase diagram of bosons interacting with a repulsive inverse sixth power pair potential, a model for assemblies of Rydberg atoms in the local van der Waals blockade regime. The model can be parametrized in terms of just two parameters, the reduced density and temperature. Solidification happens to the fcc phase. At zero temperature, the transition density is found with the diffusion Monte Carlo method at density {rho}=3.9 (({Dirac_h}/2{pi}){sup 2}/mC{sub 6}){sup 3/4}, where C{sub 6} is the strength of the interaction. The solidification curve at nonzero temperature is studied with the path-integral Monte Carlo approach and is compared with transitions in corresponding harmonic and classical crystals. Relaxation mechanisms are considered in relation to present experiments.

  3. The gene for the Ellis-van Creveld syndrome is located on chromosome 4p16

    SciTech Connect (OSTI)

    Polymeropoulos, M.H.; Ide, S.E.; Wright, M.

    1996-07-01

    Ellis-van Creveld syndrome (EVC) is an autosomal recessive disorder characterized by disproportionate dwarfism, polydactyly, and congenital heart disease. This rare disorder is found with increased frequency among the Old Order Amish community in Lancaster County, Pennsylvania. We have used linkage analysis to localize the gene responsible for the EVC phenotype in nine interrelated Amish pedigrees and three unrelated families from Mexico, Ecuador, and Brazil. We now report the linkage for the Ellisvan Creveld syndrome gene to markers on the distal short arm of human chromosome 4, with Z{sub max} = 6.91 at {theta} = 0.02 for marker HOX7, in a region proximal to the FGFR3 gene responsible for the achondroplasia phenotype. 17 refs., 2 figs., 1 tab.

  4. Advanced Vehicle Testing Activity: Dodge Ram Wagon Van - Hydrogen/CNG Operations Summary - January 2003

    SciTech Connect (OSTI)

    Karner, D.; Francfort, J.E.

    2003-01-16

    Over the past two years, Arizona Public Service, a subsidiary of Pinnacle West Capital Corporation, in cooperation with the U.S. Department of Energy's Advanced Vehicle Testing Activity, tested four gaseous fuel vehicles as part of its alternative fueled vehicle fleet. One vehicle, a Dodge Ram Wagon Van, operated initially using compressed natural gas (CNG) and later a blend of CNG and hydrogen. Of the other three vehicles, one was fueled with pure hydrogen and two were fueled with a blend of CNG and hydrogen. The three blended-fuel vehicles were originally equipped with either factory CNG engines or factory gasoline engines that were converted to run CNG fuel. The vehicles were variously modified to operate on blended fuel and were tested using 15 to 50% blends of hydrogen (by volume). The pure-hydrogen-fueled vehicle was converted from gasoline fuel to operate on 100% hydrogen. All vehicles were fueled from the Arizona Public Service's Fuel Pilot Plant, which was developed to dispense gaseous fuels, including CNG, blends of CNG and hydrogen, and pure hydrogen with up to 99.9999% purity. The primary objective of the test was to evaluate the safety and reliability of operating vehicles on hydrogen and blended hydrogen fuel, and the interface between the vehicles and the hydrogen fueling infrastructure. A secondary objective was to quantify vehicle emissions, cost, and performance. Over a total of 40,000 fleet test miles, no safety issues were found. Also, significant reductions in emissions were achieved by adding hydrogen to the fuel. This report presents results of 22,816 miles of testing for the Dodge Ram Wagon Van, operating on CNG fuel, and a blended fuel of 15% hydrogen-85% CNG.

  5. Advanced Vehicle Testing Activity: Dodge Ram Wagon Van -- Hydrogen/CNG Operations Summary

    SciTech Connect (OSTI)

    Don Karner; Francfort, James Edward

    2003-01-01

    Over the past two years, Arizona Public Service, a subsidiary of Pinnacle West Capital Corporation, in cooperation with the U.S. Department of Energy’s Advanced Vehicle Testing Activity, tested four gaseous fuel vehicles as part of its alternative fueled vehicle fleet. One vehicle, a Dodge Ram Wagon Van, operated initially using compressed natural gas (CNG) and later a blend of CNG and hydrogen. Of the other three vehicles, one was fueled with pure hydrogen and two were fueled with a blend of CNG and hydrogen. The three blended-fuel vehicles were originally equipped with either factory CNG engines or factory gasoline engines that were converted to run CNG fuel. The vehicles were variously modified to operate on blended fuel and were tested using 15 to 50% blends of hydrogen (by volume). The pure-hydrogen-fueled vehicle was converted from gasoline fuel to operate on 100% hydrogen. All vehicles were fueled from the Arizona Public Service’s Alternative Fuel Pilot Plant, which was developed to dispense gaseous fuels, including CNG, blends of CNG and hydrogen, and pure hydrogen with up to 99.9999% purity. The primary objective of the test was to evaluate the safety and reliability of operating vehicles on hydrogen and blended hydrogen fuel, and the interface between the vehicles and the hydrogen fueling infrastructure. A secondary objective was to quantify vehicle emissions, cost, and performance. Over a total of 40,000 fleet test miles, no safety issues were found. Also, significant reductions in emissions were achieved by adding hydrogen to the fuel. This report presents results of 22,816 miles of testing for the Dodge Ram Wagon Van, operating on CNG fuel, and a blended fuel of 15% hydrogen–85% CNG.

  6. Accelerating Scientific Workflows

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

    with the Burst Buffer: Accelerating Scientific Workflows in Chombo-Crunch Andrey Ovsyannikov* (NERSC, LBL) with David Trebotich, Brian Van Straalen (CRD, LBL) August 22 nd , 2016 *aovsyannikov@lbl.gov Carbon sequestration Main goal is to enable accurate prediction of the fate of geologically stored CO 2 Acetate solution Pore scale 100 µm Pore scale Field scale Flow and transport typically simulated at field scale CO 2 trapping mechanisms governed by emergent processes at pore (micro) scale è

  7. Fin-line horn antenna

    DOE Patents [OSTI]

    Reindel, John

    1990-01-01

    A fin line circuit card containing a fin line slot feeds a dipole antenna ich extends a quarterwave outside the waveguide and provides an energy beam focal point at or near the open end of the waveguide. The dipole antenna thus maintains a wide and nearly constant beamwidth, low VSWR and a circular symmetric radiation pattern for use in electronic warfare direction finding and surveillance applications.

  8. What is a Neutrino Horn?

    Office of Energy Efficiency and Renewable Energy (EERE)

    Find out how scientists at Fermilab scientists study some of the most elusive particles in our universe: neutrinos.

  9. van der Waals forces in density functional theory: a review of the vdW-DF method

    SciTech Connect (OSTI)

    Berland, Kristian; Cooper, Valentino R.; Lee, Kyuho; Schröder, Elsebeth; Thonhauser, T.; Hyldgaard, Per; Lundqvist, Bengt I.

    2015-05-15

    We review a density functional theory (DFT) that accounts for van der Waals (vdW) interactions in condensed matter, materials physics, chemistry, and biology. The insights that led to the construction of the Rutgers–Chalmers van der Waals density functional (vdW-DF) are presented with the aim of giving a historical perspective, while also emphasizing more recent efforts which have sought to improve its accuracy. In addition to technical details, we discuss a range of recent applications that illustrate the necessity of including dispersion interactions in DFT. This review highlights the value of the vdW-DF method as a general-purpose method, not only for dispersion bound systems, but also in densely packed systems where these types of interactions are traditionally thought to be negligible.

  10. van der Waals forces in density functional theory: a review of the vdW-DF method

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

    Berland, Kristian; Cooper, Valentino R.; Lee, Kyuho; Schröder, Elsebeth; Thonhauser, T.; Hyldgaard, Per; Lundqvist, Bengt I.

    2015-05-15

    We review a density functional theory (DFT) that accounts for van der Waals (vdW) interactions in condensed matter, materials physics, chemistry, and biology. The insights that led to the construction of the Rutgers–Chalmers van der Waals density functional (vdW-DF) are presented with the aim of giving a historical perspective, while also emphasizing more recent efforts which have sought to improve its accuracy. In addition to technical details, we discuss a range of recent applications that illustrate the necessity of including dispersion interactions in DFT. This review highlights the value of the vdW-DF method as a general-purpose method, not only formore » dispersion bound systems, but also in densely packed systems where these types of interactions are traditionally thought to be negligible.« less

  11. The Global Positioning System constellation as a space weather monitor. Comparison of electron measurements with Van Allen Probes data

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

    Morley, Steven K.; Sullivan, John P.; Henderson, Michael G.; Blake, J. Bernard; Baker, Daniel N.

    2016-02-06

    Energetic electron observations in Earth's radiation belts are typically sparse, and multipoint studies often rely on serendipitous conjunctions. This paper establishes the scientific utility of the Combined X-ray Dosimeter (CXD), currently flown on 19 satellites in the Global Positioning System (GPS) constellation, by cross-calibrating energetic electron measurements against data from the Van Allen Probes. By breaking our cross calibration into two parts—one that removes any spectral assumptions from the CXD flux calculation and one that compares the energy spectra—we first validate the modeled instrument response functions, then the calculated electron fluxes. Unlike previous forward modeling of energetic electron spectra, wemore » use a combination of four distributions that together capture a wide range of observed spectral shapes. Moreover, our two-step approach allowed us to identify, and correct for, small systematic offsets between block IIR and IIF satellites. Using the Magnetic Electron Ion Spectrometer and Relativistic Electron-Proton Telescope on Van Allen Probes as a “gold standard,” here we demonstrate that the CXD instruments are well understood. A robust statistical analysis shows that CXD and Van Allen Probes fluxes are similar and the measured fluxes from CXD are typically within a factor of 2 of Van Allen Probes at energies inline image4 MeV. Our team present data from 17 CXD-equipped GPS satellites covering the 2015 “St. Patrick's Day” geomagnetic storm to illustrate the scientific applications of such a high data density satellite constellation and therefore demonstrate that the GPS constellation is positioned to enable new insights in inner magnetospheric physics and space weather forecasting.« less

  12. Round 1 Emissions Results from Compressed Natural Gas Vans and Gasoline Controls Operating in the U.S. Federal Fleet

    Alternative Fuels and Advanced Vehicles Data Center [Office of Energy Efficiency and Renewable Energy (EERE)]

    Round 1 Emissions Results from Compressed Natural Gas Vans and Gasoline Controls Operating in the U.S. Federal Fleet Kenneth J. Kelly, Brent K. Bailey, and Timothy C. Coburn National Renewable Energy Laboratory Leslie Eudy ManTech Environmental Technology, Inc. Peter Lissiuk Environmental Research and Development Corp. Presented at Society for Automotive Engineers International Spring Fuels and Lubricants Meeting Dearborn, MI May 6-8, 1996 The work described here was wholly funded by the U.S.

  13. Project Overview: United Parcel Service's Second-Generation Hybrid-Electric Delivery Vans (Fact Sheet), Vehicle Technologies Program (VTP)

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

    eere.energy.gov * November 2011 UPS operates 381 hybrid-electric delivery vans nationwide. This image is reproduced with permission of United Parcel Service of America, Inc. © 2011 United Parcel Service of America, Inc. All rights reserved. Photo from UPS, NREL/PIX 19821 Advanced Vehicle Testing This project is part of a series of evaluations performed by NREL's Fleet Test and Evaluation Team for the U.S. Department of Energy's Advanced Vehicle Testing Activity (AVTA). AVTA bridges the gap

  14. Wave-driven butterfly distribution of Van Allen belt relativistic electrons

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

    Xiao, Fuliang; Yang, Chang; Su, Zhenpeng; Zhou, Qinghua; He, Zhaoguo; He, Yihua; Baker, D. N.; Spence, H. E.; Funsten, H. O.; Blake, J. B.

    2015-10-05

    Van Allen radiation belts consist of relativistic electrons trapped by Earth's magnetic field. Trapped electrons often drift azimuthally around Earth and display a butterfly pitch angle distribution of a minimum at 90° further out than geostationary orbit. This is usually attributed to drift shell splitting resulting from day–night asymmetry in Earth’s magnetic field. However, direct observation of a butterfly distribution well inside of geostationary orbit and the origin of this phenomenon have not been provided so far. Here we report high-resolution observation that a unusual butterfly pitch angle distribution of relativistic electrons occurred within 5 Earth radii during the 28more » June 2013 geomagnetic storm. In conclusion, simulation results show that combined acceleration by chorus and magnetosonic waves can successfully explain the electron flux evolution both in the energy and butterfly pitch angle distribution. Finally, the current provides a great support for the mechanism of wave-driven butterfly distribution of relativistic electrons.« less

  15. A background correction algorithm for Van Allen Probes MagEIS electron flux measurements

    SciTech Connect (OSTI)

    Claudepierre, S. G.; O'Brien, T. P.; Blake, J. B.; Fennell, J. F.; Roeder, J. L.; Clemmons, J. H.; Looper, M. D.; Mazur, J. E.; Mulligan, T. M.; Spence, H. E.; Reeves, G. D.; Friedel, R. H. W.; Henderson, M. G.; Larsen, B. A.

    2015-07-14

    We describe an automated computer algorithm designed to remove background contamination from the Van Allen Probes Magnetic Electron Ion Spectrometer (MagEIS) electron flux measurements. We provide a detailed description of the algorithm with illustrative examples from on-orbit data. We find two primary sources of background contamination in the MagEIS electron data: inner zone protons and bremsstrahlung X-rays generated by energetic electrons interacting with the spacecraft material. Bremsstrahlung X-rays primarily produce contamination in the lower energy MagEIS electron channels (~30–500 keV) and in regions of geospace where multi-M eV electrons are present. Inner zone protons produce contamination in all MagEIS energy channels at roughly L < 2.5. The background-corrected MagEIS electron data produce a more accurate measurement of the electron radiation belts, as most earlier measurements suffer from unquantifiable and uncorrectable contamination in this harsh region of the near-Earth space environment. These background-corrected data will also be useful for spacecraft engineering purposes, providing ground truth for the near-Earth electron environment and informing the next generation of spacecraft design models (e.g., AE9).

  16. A long-lived relativistic electron storage ring embedded in Earth's Outer Van Allen belt

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

    Baker, D. N.; Kanekal, S. G.; Hoxie, V. C.; Henderson, M. G.; Li, X.; Spence, H. E.; Elkington, S. R.; Friedel, R. H. W.; Goldstein, J.; Hudson, M. K.; et al

    2013-02-28

    Since their discovery over 50 years ago, the Earth’s Van Allen radiation belts are thought to consist of two distinct zones of trapped, highly energetic charged particles. The outer zone is comprised predominantly of mega-electron volt (MeV) electrons that wax and wane in intensity on time scales ranging from hours to days depending primarily on external forcing by the solar wind. Thus, the spatially separated inner zone is comprised of commingled high-energy electrons and very energetic positive ions (mostly protons), the latter being stable in intensity levels over years to decades. In situ energy-specific and temporally resolved spacecraft observations revealmore » an isolated third ring, or torus, of high-energy (E > 2 MeV) electrons that formed on 2 September 2012 and persisted largely unchanged in the geocentric radial range of 3.0 to ~3.5 Earth radii for over four weeks before being disrupted (and virtually annihilated) by a powerful interplanetary shock wave passage.« less

  17. A background correction algorithm for Van Allen Probes MagEIS electron flux measurements

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

    Claudepierre, S. G.; O'Brien, T. P.; Blake, J. B.; Fennell, J. F.; Roeder, J. L.; Clemmons, J. H.; Looper, M. D.; Mazur, J. E.; Mulligan, T. M.; Spence, H. E.; et al

    2015-07-14

    We describe an automated computer algorithm designed to remove background contamination from the Van Allen Probes Magnetic Electron Ion Spectrometer (MagEIS) electron flux measurements. We provide a detailed description of the algorithm with illustrative examples from on-orbit data. We find two primary sources of background contamination in the MagEIS electron data: inner zone protons and bremsstrahlung X-rays generated by energetic electrons interacting with the spacecraft material. Bremsstrahlung X-rays primarily produce contamination in the lower energy MagEIS electron channels (~30–500 keV) and in regions of geospace where multi-M eV electrons are present. Inner zone protons produce contamination in all MagEIS energymore » channels at roughly L < 2.5. The background-corrected MagEIS electron data produce a more accurate measurement of the electron radiation belts, as most earlier measurements suffer from unquantifiable and uncorrectable contamination in this harsh region of the near-Earth space environment. These background-corrected data will also be useful for spacecraft engineering purposes, providing ground truth for the near-Earth electron environment and informing the next generation of spacecraft design models (e.g., AE9).« less

  18. Temperature dependent van der Pauw-Hall measurements on sodium doped single crystalline cadmium telluride

    SciTech Connect (OSTI)

    Ahmad, Faisal R.

    2015-03-21

    In this report, results of the temperature dependent electrical conductivity measurements conducted on single crystalline cadmium telluride (CdTe), containing sodium (Na) impurities are presented and discussed. The electrical conductivity measurements were conducted using an apparatus that allowed the implementation of a standard van der Pauw-Hall effect technique through which the electrical resistivity, concentration of majority carriers, as well as the carrier mobility were determined for temperatures ranging between 24 K and 350 K. Over this temperature range, the electrical resistivity was observed to change by 7 orders of magnitude. Hall measurements showed that the hole concentration at 300 K was ∼3 × 10{sup 15 }cm{sup –3} and the hole mobility at the same temperature was ∼80 cm{sup 2}/V s. Measuring the concentration of holes as a function of the sample temperature enabled the estimation of the acceptor energy level with respect to the valence band maximum to be ∼60 meV. The same data also revealed the potential presence of a compensating donor level. Furthermore, the hole mobility was also analyzed over the entire temperature range and the data revealed that above 100 K, the carrier mobility was dominated by the scattering of holes from lattice vibrations.

  19. A long-lived relativistic electron storage ring embedded in Earth's Outer Van Allen belt

    SciTech Connect (OSTI)

    Baker, D. N.; Kanekal, S. G.; Hoxie, V. C.; Henderson, M. G.; Li, X.; Spence, H. E.; Elkington, S. R.; Friedel, R. H. W.; Goldstein, J.; Hudson, M. K.; Reeves, G. D.; Thorne, R. M.; Kletzing, C. A.; Claudepierre, S. G.

    2013-02-28

    Since their discovery over 50 years ago, the Earth’s Van Allen radiation belts are thought to consist of two distinct zones of trapped, highly energetic charged particles. The outer zone is comprised predominantly of mega-electron volt (MeV) electrons that wax and wane in intensity on time scales ranging from hours to days depending primarily on external forcing by the solar wind. Thus, the spatially separated inner zone is comprised of commingled high-energy electrons and very energetic positive ions (mostly protons), the latter being stable in intensity levels over years to decades. In situ energy-specific and temporally resolved spacecraft observations reveal an isolated third ring, or torus, of high-energy (E > 2 MeV) electrons that formed on 2 September 2012 and persisted largely unchanged in the geocentric radial range of 3.0 to ~3.5 Earth radii for over four weeks before being disrupted (and virtually annihilated) by a powerful interplanetary shock wave passage.

  20. Experimental validation of the van Herk margin formula for lung radiation therapy

    SciTech Connect (OSTI)

    Ecclestone, Gillian; Heath, Emily; Bissonnette, Jean-Pierre

    2013-11-15

    Purpose: To validate the van Herk margin formula for lung radiation therapy using realistic dose calculation algorithms and respiratory motion modeling. The robustness of the margin formula against variations in lesion size, peak-to-peak motion amplitude, tissue density, treatment technique, and plan conformity was assessed, along with the margin formula assumption of a homogeneous dose distribution with perfect plan conformity.Methods: 3DCRT and IMRT lung treatment plans were generated within the ORBIT treatment planning platform (RaySearch Laboratories, Sweden) on 4DCT datasets of virtual phantoms. Random and systematic respiratory motion induced errors were simulated using deformable registration and dose accumulation tools available within ORBIT for simulated cases of varying lesion sizes, peak-to-peak motion amplitudes, tissue densities, and plan conformities. A detailed comparison between the margin formula dose profile model, the planned dose profiles, and penumbra widths was also conducted to test the assumptions of the margin formula. Finally, a correction to account for imperfect plan conformity was tested as well as a novel application of the margin formula that accounts for the patient-specific motion trajectory.Results: The van Herk margin formula ensured full clinical target volume coverage for all 3DCRT and IMRT plans of all conformities with the exception of small lesions in soft tissue. No dosimetric trends with respect to plan technique or lesion size were observed for the systematic and random error simulations. However, accumulated plans showed that plan conformity decreased with increasing tumor motion amplitude. When comparing dose profiles assumed in the margin formula model to the treatment plans, discrepancies in the low dose regions were observed for the random and systematic error simulations. However, the margin formula respected, in all experiments, the 95% dose coverage required for planning target volume (PTV) margin derivation, as

  1. Van Allen Probes observation and modeling of chorus excitation and propagation during weak geomagnetic activities

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

    He, Yihua; Xiao, Fuliang; Zhou, Qinghua; Yang, Chang; Liu, Si; Baker, D. N.; Kletzing, C. A.; Kurth, W. S.; Hospodarsky, G. B.; Spence, H. E.; et al

    2015-08-20

    We report correlated data on nightside chorus waves and energetic electrons during two small storm periods: 1 November 2012 (Dst ≈ –45) and 14 January 2013 (Dst ≈ –18). The Van Allen Probes simultaneously observed strong chorus waves at locations L = 5.8 – 6.3, with a lower frequency band 0.1–0.5fce and a peak spectral density ~10–4 nT2/Hz. In the same period, the fluxes and anisotropy of energetic (~10–300 keV) electrons were greatly enhanced in the interval of large negative interplanetary magnetic field Bz. Using a bi-Maxwellian distribution to model the observed electron distribution, we perform ray tracing simulations tomore » show that nightside chorus waves are indeed produced by the observed electron distribution with a peak growth for a field-aligned propagation approximately between 0.3fce and 0.4fce, at latitude <7°. Moreover, chorus waves launched with initial normal angles either θ < 90° or > 90° propagate along the field either northward or southward and then bounce back either away from Earth for a lower frequency or toward Earth for higher frequencies. The current results indicate that nightside chorus waves can be excited even during weak geomagnetic activities in cases of continuous injection associated with negative Bz. Furthermore, we examine a dayside event during a small storm C on 8 May 2014 (Dst ≈ –45) and find that the observed anisotropic energetic electron distributions potentially contribute to the generation of dayside chorus waves, but this requires more thorough studies in the future.« less

  2. Van Allen Probes observation and modeling of chorus excitation and propagation during weak geomagnetic activities

    SciTech Connect (OSTI)

    He, Yihua; Xiao, Fuliang; Zhou, Qinghua; Yang, Chang; Liu, Si; Baker, D. N.; Kletzing, C. A.; Kurth, W. S.; Hospodarsky, G. B.; Spence, H. E.; Reeves, G. D.; Funsten, H. O.; Blake, J. B.

    2015-08-20

    We report correlated data on nightside chorus waves and energetic electrons during two small storm periods: 1 November 2012 (Dst ≈ –45) and 14 January 2013 (Dst ≈ –18). The Van Allen Probes simultaneously observed strong chorus waves at locations L = 5.8 – 6.3, with a lower frequency band 0.1–0.5fce and a peak spectral density ~10–4 nT2/Hz. In the same period, the fluxes and anisotropy of energetic (~10–300 keV) electrons were greatly enhanced in the interval of large negative interplanetary magnetic field Bz. Using a bi-Maxwellian distribution to model the observed electron distribution, we perform ray tracing simulations to show that nightside chorus waves are indeed produced by the observed electron distribution with a peak growth for a field-aligned propagation approximately between 0.3fce and 0.4fce, at latitude <7°. Moreover, chorus waves launched with initial normal angles either θ < 90° or > 90° propagate along the field either northward or southward and then bounce back either away from Earth for a lower frequency or toward Earth for higher frequencies. The current results indicate that nightside chorus waves can be excited even during weak geomagnetic activities in cases of continuous injection associated with negative Bz. Furthermore, we examine a dayside event during a small storm C on 8 May 2014 (Dst ≈ –45) and find that the observed anisotropic energetic electron distributions potentially contribute to the generation of dayside chorus waves, but this requires more thorough studies in the future.

  3. Energetic electron precipitation associated with pulsating aurora: EISCAT and Van Allen Probe observations

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

    Miyoshi, Y.; Oyama, S.; Saito, S.; Kurita, S.; Fujiwara, H.; Kataoka, R.; Ebihara, Y.; Kletzing, C.; Reeves, G.; Santolik, O.; et al

    2015-04-21

    Pulsating auroras show quasi-periodic intensity modulations caused by the precipitation of energetic electrons of the order of tens of keV. It is expected theoretically that not only these electrons but also subrelativistic/relativistic electrons precipitate simultaneously into the ionosphere owing to whistler mode wave-particle interactions. The height-resolved electron density profile was observed with the European Incoherent Scatter (EISCAT) Tromsø VHF radar on 17 November 2012. Electron density enhancements were clearly identified at altitudes >68 km in association with the pulsating aurora, suggesting precipitation of electrons with a broadband energy range from ~10 keV up to at least 200 keV. The riometermore » and network of subionospheric radio wave observations also showed the energetic electron precipitations during this period. During this period, the footprint of the Van Allen Probe-A satellite was very close to Tromsø and the satellite observed rising tone emissions of the lower band chorus (LBC) waves near the equatorial plane. Considering the observed LBC waves and electrons, we conducted a computer simulation of the wave-particle interactions. This showed simultaneous precipitation of electrons at both tens of keV and a few hundred keV, which is consistent with the energy spectrum estimated by the inversion method using the EISCAT observations. This result revealed that electrons with a wide energy range simultaneously precipitate into the ionosphere in association with the pulsating aurora, providing the evidence that pulsating auroras are caused by whistler chorus waves. We suggest that scattering by propagating whistler simultaneously causes both the precipitations of subrelativistic electrons and the pulsating aurora.« less

  4. Energetic electron precipitation associated with pulsating aurora: EISCAT and Van Allen Probe observations

    SciTech Connect (OSTI)

    Miyoshi, Y.; Oyama, S.; Saito, S.; Kurita, S.; Fujiwara, H.; Kataoka, R.; Ebihara, Y.; Kletzing, C.; Reeves, G.; Santolik, O.; Clilverd, M.; Rodger, C. J.; Turunen, E.; Tsuchiya, F.

    2015-04-21

    Pulsating auroras show quasi-periodic intensity modulations caused by the precipitation of energetic electrons of the order of tens of keV. It is expected theoretically that not only these electrons but also subrelativistic/relativistic electrons precipitate simultaneously into the ionosphere owing to whistler mode wave-particle interactions. The height-resolved electron density profile was observed with the European Incoherent Scatter (EISCAT) Tromsø VHF radar on 17 November 2012. Electron density enhancements were clearly identified at altitudes >68 km in association with the pulsating aurora, suggesting precipitation of electrons with a broadband energy range from ~10 keV up to at least 200 keV. The riometer and network of subionospheric radio wave observations also showed the energetic electron precipitations during this period. During this period, the footprint of the Van Allen Probe-A satellite was very close to Tromsø and the satellite observed rising tone emissions of the lower band chorus (LBC) waves near the equatorial plane. Considering the observed LBC waves and electrons, we conducted a computer simulation of the wave-particle interactions. This showed simultaneous precipitation of electrons at both tens of keV and a few hundred keV, which is consistent with the energy spectrum estimated by the inversion method using the EISCAT observations. This result revealed that electrons with a wide energy range simultaneously precipitate into the ionosphere in association with the pulsating aurora, providing the evidence that pulsating auroras are caused by whistler chorus waves. We suggest that scattering by propagating whistler simultaneously causes both the precipitations of subrelativistic electrons and the pulsating aurora.

  5. Turbulent mixing of a slightly supercritical van der Waals fluid at low-Mach number

    SciTech Connect (OSTI)

    Battista, F.; Casciola, C. M.; Picano, F.

    2014-05-15

    Supercritical fluids near the critical point are characterized by liquid-like densities and gas-like transport properties. These features are purposely exploited in different contexts ranging from natural products extraction/fractionation to aerospace propulsion. Large part of studies concerns this last context, focusing on the dynamics of supercritical fluids at high Mach number where compressibility and thermodynamics strictly interact. Despite the widespread use also at low Mach number, the turbulent mixing properties of slightly supercritical fluids have still not investigated in detail in this regime. This topic is addressed here by dealing with Direct Numerical Simulations of a coaxial jet of a slightly supercritical van der Waals fluid. Since acoustic effects are irrelevant in the low Mach number conditions found in many industrial applications, the numerical model is based on a suitable low-Mach number expansion of the governing equation. According to experimental observations, the weakly supercritical regime is characterized by the formation of finger-like structures the so-called ligaments in the shear layers separating the two streams. The mechanism of ligament formation at vanishing Mach number is extracted from the simulations and a detailed statistical characterization is provided. Ligaments always form whenever a high density contrast occurs, independently of real or perfect gas behaviors. The difference between real and perfect gas conditions is found in the ligament small-scale structure. More intense density gradients and thinner interfaces characterize the near critical fluid in comparison with the smoother behavior of the perfect gas. A phenomenological interpretation is here provided on the basis of the real gas thermodynamics properties.

  6. Advanced Vehicle Testing Activity: Hydrogen-Fueled Mercedes Sprinter Van -- Operating Summary

    SciTech Connect (OSTI)

    Karner, D.; Francfort, James Edward

    2003-01-01

    Over the past two years, Arizona Public Service, a subsidiary of Pinnacle West Capital Corporation, in cooperation with the U.S. Department of Energy's Advanced Vehicle Testing Activity, tested four gaseous fuel vehicles as part of its alternative fueled vehicle fleet. One vehicle operated initially using compressed natural gas (CNG) and later a blend of CNG and hydrogen. Of the other three vehicles, one was fueled with pure hydrogen and two were fueled with a blend of CNG and hydrogen. The three blended-fuel vehicles were originally equipped with either factory CNG engines or factory gasoline engines that were converted to run CNG fuel. The vehicles were variously modified to operate on blended fuel and were tested using 15 to 50% blends of hydrogen (by volume). The pure- hydrogen-fueled vehicle was converted from gasoline fuel to operate on 100% hydrogen. All vehicles were fueled from the Arizona Public Service's Alternative Fuel Pilot Plant, which was developed to dispense gaseous fuels, including CNG, blends of CNG and hydrogen, and pure hydrogen with up to 99.9999% purity. The primary objective of the test was to evaluate the safety and reliability of operating vehicles on hydrogen and blended hydrogen fuel, and the interface between the vehicles and the hydrogen fueling infrastructure. A secondary objective was to quantify vehicle emissions, cost, and performance. Over a total of 40,000 fleet test miles, no safety issues were found. Also, significant reductions in emissions were achieved by adding hydrogen to the fuel. This report presents results of testing conducted over 6,864 kilometers (4,265 miles) of operation using the pure-hydrogen-fueled Mercedes Sprinter van.

  7. Advanced Vehicle Testing Activity: Hydrogen-Fueled Mercedes Sprinter Van Operating Summary - January 2003

    SciTech Connect (OSTI)

    Karner, D.; Francfort, J.E.

    2003-01-22

    Over the past two years, Arizona Public Service, a subsidiary of Pinnacle West Capital Corporation, in cooperation with the U.S. Department of Energy's Advanced Vehicle Testing Activity, tested four gaseous fuel vehicles as part of its alternative fueled vehicle fleet. One vehicle operated initially using compressed natural gas (CNG) and later a blend of CNG and hydrogen. Of the other three vehicles, one was fueled with pure hydrogen and two were fueled with a blend of CNG and hydrogen. The three blended-fuel vehicles were originally equipped with either factory CNG engines or factory gasoline engines that were converted to run CNG fuel. The vehicles were variously modified to operate on blended fuel and were tested using 15 to 50% blends of hydrogen (by volume). The pure-hydrogen-fueled vehicle was converted from gasoline fuel to operate on 100% hydrogen. All vehicles were fueled from the Arizona Public Service's Alternative Fuel Pilot Plant, which was developed to dispense gaseous fuels, including CNG, blends of CNG and hydrogen, and pure hydrogen with up to 99.9999% purity. The primary objective of the test was to evaluate the safety and reliability of operating vehicles on hydrogen and blended hydrogen fuel, and the interface between the vehicles and the hydrogen fueling infrastructure. A secondary objective was to quantify vehicle emissions, cost, and performance. Over a total of 40,000 fleet test miles, no safety issues were found. Also, significant reductions in emissions were achieved by adding hydrogen to the fuel. This report presents results of testing conducted over 6,864 kilometers (4,265 miles) of operation using the pure-hydrogen-fueled Mercedes Sprinter van.

  8. Van Allen Probes, THEMIS, GOES, and cluster observations of EMIC waves, ULF pulsations, and an electron flux dropout

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

    Sigsbee, K.; Kletzing, C. A.; Smith, C. W.; MacDowall, R.; Spence, H.; Reeves, G.; Blake, J. B.; Baker, D. N.; Green, J. C.; Singer, H. J.; et al

    2016-03-04

    We examined an electron flux dropout during the 12–14 November 2012 geomagnetic storm using observations from seven spacecraft: the two Van Allen Probes, Time History of Events and Macroscale Interactions during Substorms (THEMIS)-A (P5), Cluster 2, and Geostationary Operational Environmental Satellites (GOES) 13, 14, and 15. The electron fluxes for energies greater than 2.0 MeV observed by GOES 13, 14, and 15 at geosynchronous orbit and by the Van Allen Probes remained at or near instrumental background levels for more than 24 h from 12 to 14 November. For energies of 0.8 MeV, the GOES satellites observed two shorter intervalsmore » of reduced electron fluxes. The first interval of reduced 0.8 MeV electron fluxes on 12–13 November was associated with an interplanetary shock and a sudden impulse. Cluster, THEMIS, and GOES observed intense He+ electromagnetic ion cyclotron (EMIC) waves from just inside geosynchronous orbit out to the magnetopause across the dayside to the dusk flank. The second interval of reduced 0.8 MeV electron fluxes on 13–14 November was associated with a solar sector boundary crossing and development of a geomagnetic storm with Dst <–100 nT. At the start of the recovery phase, both the 0.8 and 2.0 MeV electron fluxes finally returned to near prestorm values, possibly in response to strong ultralow frequency (ULF) waves observed by the Van Allen Probes near dawn. A combination of adiabatic effects, losses to the magnetopause, scattering by EMIC waves, and acceleration by ULF waves can explain the observed electron behavior.« less

  9. TEMPERATURE MEASUREMENTS COLLECTED FROM AN INSTRUMENTED VAN IN SALT LAKE CITY, UTAH AS PART OF URBAN 2000

    SciTech Connect (OSTI)

    M.J. BROWN; E.R. PARDYJAK

    2001-08-01

    Measurements of temperature and position were collected during the night from an instrumented van on routes through Salt Lake City and the rural outskirts. The measurements were taken as part of the Department of Energy Chemical and Biological National Security Program URBAN 2 Field Experiment conducted in October 2000 (Shinn et al., 2000 and Allwine et al., 2001a). The instrumented van was driven over three primary routes, two including downtown, residential, and ''rural'' areas and a third that went by a line of permanently fixed temperature probes (Allwine et al., 2001b) for cross-checking purposes. Each route took from 45 to 60 minutes to complete. Based on four nights of data, initial analyses indicate that there was a temperature difference of 2-5 C between the urban core and nearby ''rural'' areas. Analyses also suggest that there were significant fine scale temperature differences over distances of tens of meters within the city and in the nearby rural areas. The temperature measurements that were collected are intended to supplement the meteorological measurements taken during the URBAN2000 Field Experiment, to assess the importance of the urban heat island phenomenon in Salt Lake City, and to test the urban canopy parameterizations that have been developed for regional scale meteorological codes as part of the DOE CBNP program.

  10. Van der Waals metal-semiconductor junction: Weak Fermi level pinning enables effective tuning of Schottky barrier

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

    Liu, Yuanyue; Stradins, Paul; Wei, Su -Huai

    2016-04-22

    Two-dimensional (2D) semiconductors have shown great potential for electronic and optoelectronic applications. However, their development is limited by a large Schottky barrier (SB) at the metal-semiconductor junction (MSJ), which is difficult to tune by using conventional metals because of the effect of strong Fermi level pinning (FLP). We show that this problem can be overcome by using 2D metals, which are bounded with 2D semiconductors through van der Waals (vdW) interactions. This success relies on a weak FLP at the vdW MSJ, which is attributed to the suppression of metal-induced gap states. Consequently, the SB becomes tunable and can vanishmore » with proper 2D metals (for example, H-NbS2). This work not only offers new insights into the fundamental properties of heterojunctions but also uncovers the great potential of 2D metals for device applications.« less

  11. Combustion testing and heat recovery study: Frank E. Van Lare Wastewater Treatment Plant, Monroe County. Final report

    SciTech Connect (OSTI)

    1995-01-01

    The objectives of the study were to record and analyze sludge management operations data and sludge incinerator combustion data; ascertain instrumentation and control needs; calculate heat balances for the incineration system; and determine the feasibility of different waste-heat recovery technologies for the Frank E. Van Lare (FEV) Wastewater Treatment Plant. As an integral part of this study, current and pending federal and state regulations were evaluated to establish their impact on furnace operation and subsequent heat recovery. Of significance is the effect of the recently promulgated Federal 40 CFR Part 503 regulations on the FEV facility. Part 503 regulations were signed into law in November 1992, and, with some exceptions, affected facilities must be in compliance by February 19, 1994. Those facilities requiring modifications or upgrades to their incineration or air pollution control equipment to meet Part 503 regulations must be in compliance by February 19, 1995.

  12. Compact two-electron wave function for bond dissociation and Van der Waals interactions: A natural amplitude assessment

    SciTech Connect (OSTI)

    Giesbertz, Klaas J. H.; Leeuwen, Robert van

    2014-05-14

    Electron correlations in molecules can be divided in short range dynamical correlations, long range Van der Waals type interactions, and near degeneracy static correlations. In this work, we analyze for a one-dimensional model of a two-electron system how these three types of correlations can be incorporated in a simple wave function of restricted functional form consisting of an orbital product multiplied by a single correlation function f?(r{sub 12}) depending on the interelectronic distance r{sub 12}. Since the three types of correlations mentioned lead to different signatures in terms of the natural orbital (NO) amplitudes in two-electron systems, we make an analysis of the wave function in terms of the NO amplitudes for a model system of a diatomic molecule. In our numerical implementation, we fully optimize the orbitals and the correlation function on a spatial grid without restrictions on their functional form. Due to this particular form of the wave function, we can prove that none of the amplitudes vanishes and moreover that it displays a distinct sign pattern and a series of avoided crossings as a function of the bond distance in agreement with the exact solution. This shows that the wave function ansatz correctly incorporates the long range Van der Waals interactions. We further show that the approximate wave function gives an excellent binding curve and is able to describe static correlations. We show that in order to do this the correlation function f?(r{sub 12}) needs to diverge for large r{sub 12} at large internuclear distances while for shorter bond distances it increases as a function of r{sub 12} to a maximum value after which it decays exponentially. We further give a physical interpretation of this behavior.

  13. Al{sub 70}Pd{sub 21.5}Mn{sub 8.5}: A quasicrystal showing the de haas-van Alphen effect

    SciTech Connect (OSTI)

    Haanappel, E.G.; Kycia, S.W.; Harmon, B.N.; Canfield, P.C.; Goldman, A.I.; Rabson, D.A.; Thompson, J.D.; Mueller, F.M.

    1995-07-01

    We have measured the de Haas-van Alphen effect in the icosahedral quasicrystal Al{sub 70}Pd{sub 21.5}Mn{sub 8.5}. We have found two well-defined frequencies with the magnetic field parallel to a five-fold axis, and two different ones with the field parallel to a two-fold axis. On increasing the temperature, the amplitude of the oscillations substantially decreased, suggesting that the carriers have large masses.

  14. Near-earth injection of MeV electrons associated with intense dipolarization electric fields: Van Allen Probes observations

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

    Dai, Lei; Wang, Chi; Duan, Suping; He, Zhaohai; Wygant, John R.; Cattell, Cynthia A.; Tao, Xin; Su, Zhenpeng; Kletzing, Craig; Baker, Daniel N.; et al

    2015-08-10

    Substorms generally inject tens to hundreds of keV electrons, but intense substorm electric fields have been shown to inject MeV electrons as well. An intriguing question is whether such MeV electron injections can populate the outer radiation belt. Here we present observations of a substorm injection of MeV electrons into the inner magnetosphere. In the premidnight sector at L~5.5, Van Allen Probes (Radiation Belt Storm Probes)-A observed a large dipolarization electric field (50 mV/m) over ~40 s and a dispersionless injection of electrons up to ~3 MeV. Pitch angle observations indicated betatron acceleration of MeV electrons at the dipolarization front.more » Corresponding signals of MeV electron injection were observed at LANL-GEO, THEMIS-D, and GOES at geosynchronous altitude. Through a series of dipolarizations, the injections increased the MeV electron phase space density by 1 order of magnitude in less than 3 h in the outer radiation belt (L > 4.8). Our observations provide evidence that deep injections can supply significant MeV electrons.« less

  15. Near-earth injection of MeV electrons associated with intense dipolarization electric fields: Van Allen Probes observations

    SciTech Connect (OSTI)

    Dai, Lei; Wang, Chi; Duan, Suping; He, Zhaohai; Wygant, John R.; Cattell, Cynthia A.; Tao, Xin; Su, Zhenpeng; Kletzing, Craig; Baker, Daniel N.; Li, Xinlin; Malaspina, David; Blake, J. Bernard; Fennell, Joseph; Claudepierre, Seth; Turner, Drew L.; Reeves, Geoffrey D.; Funsten, Herbert O.; Spence, Harlan E.; Angelopoulos, Vassilis; Fruehauff, Dennis; Chen, Lunjin; Thaller, Scott; Breneman, Aaron; Tang, Xiangwei

    2015-08-10

    Substorms generally inject tens to hundreds of keV electrons, but intense substorm electric fields have been shown to inject MeV electrons as well. An intriguing question is whether such MeV electron injections can populate the outer radiation belt. Here we present observations of a substorm injection of MeV electrons into the inner magnetosphere. In the premidnight sector at L~5.5, Van Allen Probes (Radiation Belt Storm Probes)-A observed a large dipolarization electric field (50 mV/m) over ~40 s and a dispersionless injection of electrons up to ~3 MeV. Pitch angle observations indicated betatron acceleration of MeV electrons at the dipolarization front. Corresponding signals of MeV electron injection were observed at LANL-GEO, THEMIS-D, and GOES at geosynchronous altitude. Through a series of dipolarizations, the injections increased the MeV electron phase space density by 1 order of magnitude in less than 3 h in the outer radiation belt (L > 4.8). Our observations provide evidence that deep injections can supply significant MeV electrons.

  16. Magic ratio of window width to grating period for van der Waals potential measurements using material gratings

    SciTech Connect (OSTI)

    Lonij, Vincent P. A.; Holmgren, William F.; Cronin, Alexander D.

    2009-12-15

    We report improved precision measurements of the van der Waals potential strength (C{sub 3}) for Na atoms and a silicon-nitride (SiN{sub x}) surface. We studied diffraction from nanofabricated gratings with a particular 'magic' open fraction that allows us to determine C{sub 3} without the need for separate measurements of the width of the grating openings. Therefore, finding the magic open fraction improves the precision of C{sub 3} measurements. The same effect is demonstrated for a grating with an arbitrary open fraction by rotating it to a particular 'magic' angle, yielding C{sub 3}=3.42+-0.19 eV A{sup 3} for Na and a SiN{sub x} surface. This precision is sufficient to detect a change in C{sub 3} due to a thin metal coating on the grating surface. We discuss the contribution to C{sub 3} of core electrons and edge effects.

  17. Potential energy surface of the CO{sub 2}–N{sub 2} van der Waals complex

    SciTech Connect (OSTI)

    Nasri, Sameh; Ajili, Yosra; Jaidane, Nejm-Eddine; Kalugina, Yulia N.; Halvick, Philippe; Stoecklin, Thierry; Hochlaf, Majdi

    2015-05-07

    Four-dimensional potential energy surface (4D-PES) of the atmospherically relevant CO{sub 2}–N{sub 2} van der Waals complex is generated using the explicitly correlated coupled cluster with single, double, and perturbative triple excitation (CCSD(T)-F12) method in conjunction with the augmented correlation consistent triple zeta (aug-cc-pVTZ) basis set. This 4D-PES is mapped along the intermonomer coordinates. An analytic fit of this 4D-PES is performed. Our extensive computations confirm that the most stable form corresponds to a T-shape structure where the nitrogen molecule points towards the carbon atom of CO{sub 2}. In addition, we located a second isomer and two transition states in the ground state PES of CO{sub 2}–N{sub 2}. All of them lay below the CO{sub 2} + N{sub 2} dissociation limit. This 4D-PES is flat and strongly anisotropic along the intermonomer coordinates. This results in the possibility of the occurrence of large amplitude motions within the complex, such as the inversion of N{sub 2}, as suggested in the recent spectroscopic experiments. Finally, we show that the experimentally established deviations from the C{sub 2v} structure at equilibrium for the most stable isomer are due to the zero-point out-of-plane vibration correction.

  18. Property:Address | Open Energy Information

    Open Energy Info (EERE)

    Inc + 2130 Van Horn Rd. + AC Solar Inc + P.O. Box 128 + ACME solar works + 20738 Brown Lane + ACORE + PO Box 33518 + ADI Wind, llc. + 4686 French Creek Road + AEE Solar +...

  19. Whistler anisotropy instabilities as the source of banded chorus: Van Allen Probes observations and particle-in-cell simulations

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

    Fu, Xiangrong; Cowee, Misa M.; Friedel, Reinhard H.; Funsten, Herbert O.; Gary, S. Peter; Hospodarsky, George B.; Kletzing, Craig; Kurth, William; Larsen, Brian A.; Liu, Kaijun; et al

    2014-10-22

    Magnetospheric banded chorus is enhanced whistler waves with frequencies ωr < Ωe, where Ωe is the electron cyclotron frequency, and a characteristic spectral gap at ωr ≃ Ωe/2. This paper uses spacecraft observations and two-dimensional particle-in-cell simulations in a magnetized, homogeneous, collisionless plasma to test the hypothesis that banded chorus is due to local linear growth of two branches of the whistler anisotropy instability excited by two distinct, anisotropic electron components of significantly different temperatures. The electron densities and temperatures are derived from Helium, Oxygen, Proton, and Electron instrument measurements on the Van Allen Probes A satellite during a bandedmore » chorus event on 1 November 2012. The observations are consistent with a three-component electron model consisting of a cold (a few tens of eV) population, a warm (a few hundred eV) anisotropic population, and a hot (a few keV) anisotropic population. The simulations use plasma and field parameters as measured from the satellite during this event except for two numbers: the anisotropies of the warm and the hot electron components are enhanced over the measured values in order to obtain relatively rapid instability growth. The simulations show that the warm component drives the quasi-electrostatic upper band chorus and that the hot component drives the electromagnetic lower band chorus; the gap at ~Ωe/2 is a natural consequence of the growth of two whistler modes with different properties.« less

  20. Two-dimensional GaSe/MoSe2 misfit bilayer heterojunctions by van der Waals epitaxy

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

    Li, Xufan; Lin, Ming-Wei; Lin, Junhao; Huang, Bing; Puretzky, Alexander A.; Ma, Cheng; Wang, Kai; Zhou, Wu; Pantelides, Sokrates T.; Chi, Miaofang; et al

    2016-04-01

    Two-dimensional (2D) heterostructures hold the promise for future atomically-thin electronics and optoelectronics due to their diverse functionalities. While heterostructures consisting of different transition metal dichacolgenide monolayers with well-matched lattices and novel physical properties have been successfully fabricated via van der Waals (vdW) or edge epitaxy, constructing heterostructures from monolayers of layered semiconductors with large lattice misfits still remains challenging. Here, we report the growth of monolayer GaSe/MoSe2 heterostructures with large lattice misfit by two-step chemical vapor deposition (CVD). Both vertically stacked and lateral heterostructures are demonstrated. The vertically stacked GaSe/MoSe2 heterostructures exhibit vdW epitaxy with well-aligned lattice orientation between themore » two layers, forming an incommensurate vdW heterostructure. However, the lateral heterostructures exhibit no lateral epitaxial alignment at the interface between GaSe and MoSe2 crystalline domains. Instead of a direct lateral connection at the boundary region where the same lattice orientation is observed between GaSe and MoSe2 monolayer domains in lateral GaSe/MoSe2 heterostructures, GaSe monolayers are found to overgrow MoSe2 during CVD, forming a stripe of vertically stacked vdW heterostructure at the crystal interface. Such vertically-stacked vdW GaSe/MoSe2 heterostructures are shown to form p-n junctions with effective transport and separation of photo-generated charge carriers between layers, resulting in a gate-tunable photovoltaic response. In conclusion, these GaSe/MoSe2 vdW heterostructures should have applications as gate-tunable field-effect transistors, photodetectors, and solar cells.« less

  1. Whistler anisotropy instabilities as the source of banded chorus: Van Allen Probes observations and particle-in-cell simulations

    SciTech Connect (OSTI)

    Fu, Xiangrong; Cowee, Misa M.; Friedel, Reinhard H.; Funsten, Herbert O.; Gary, S. Peter; Hospodarsky, George B.; Kletzing, Craig; Kurth, William; Larsen, Brian A.; Liu, Kaijun; MacDonald, Elizabeth A.; Reeves, Geoffrey D.; Skoug, Ruth M.; Winske, Dan

    2014-10-22

    Magnetospheric banded chorus is enhanced whistler waves with frequencies ωr < Ωe, where Ωe is the electron cyclotron frequency, and a characteristic spectral gap at ωr ≃ Ωe/2. This paper uses spacecraft observations and two-dimensional particle-in-cell simulations in a magnetized, homogeneous, collisionless plasma to test the hypothesis that banded chorus is due to local linear growth of two branches of the whistler anisotropy instability excited by two distinct, anisotropic electron components of significantly different temperatures. The electron densities and temperatures are derived from Helium, Oxygen, Proton, and Electron instrument measurements on the Van Allen Probes A satellite during a banded chorus event on 1 November 2012. The observations are consistent with a three-component electron model consisting of a cold (a few tens of eV) population, a warm (a few hundred eV) anisotropic population, and a hot (a few keV) anisotropic population. The simulations use plasma and field parameters as measured from the satellite during this event except for two numbers: the anisotropies of the warm and the hot electron components are enhanced over the measured values in order to obtain relatively rapid instability growth. The simulations show that the warm component drives the quasi-electrostatic upper band chorus and that the hot component drives the electromagnetic lower band chorus; the gap at ~Ωe/2 is a natural consequence of the growth of two whistler modes with different properties.

  2. Van der Waals epitaxial growth of two-dimensional single-crystalline GaSe domains on graphene

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

    Li, Xufan; Basile, Leonardo; Huang, Bing; Ma, Cheng; Lee, Jaekwang; Vlassiouk, Ivan V.; Puretzky, Alexander A.; Lin, Ming -Wei; Chi, Miaofang; Idrobo Tapia, Juan Carlos; et al

    2015-07-22

    Two-dimensional (2D) van der Waals (vdW) heterostructures are a family of artificially-structured materials that promise tunable optoelectronic properties for devices with enhanced functionalities. Compared to stamping, direct epitaxy of vdW heterostructures is ideal for clean interlayer interfaces and scalable device fabrication. Here, we explore the synthesis and preferred orientations of 2D GaSe atomic layers on graphene (Gr) by vdW epitaxy. Guided by the wrinkles on graphene, GaSe nuclei form that share a predominant lattice orientation. Due to vdW epitaxial growth many nuclei grow as perfectly aligned crystals and coalesce to form large (tens of microns), single-crystal flakes. Through theoretical investigationsmore » of interlayer energetics, and measurements of preferred orientations by atomic-resolution STEM and electron diffraction, a 10.9 interlayer rotation of the GaSe lattice with respect to the underlying graphene is found to be the most energetically preferred vdW heterostructure with the largest binding energy and the longest-range ordering. These GaSe/Gr vdW heterostructures exhibit an enhanced Raman E21g band of monolayer GaSe along with highly-quenched photoluminescence due to strong charge transfer. Despite the very large lattice mismatch of GaSe/Gr through vdW epitaxy, the predominant orientation control and convergent formation of large single-crystal flakes demonstrated here is promising for the scalable synthesis of large-area vdW heterostructures for the development of new optical and optoelectronic devices.« less

  3. Van der Waals epitaxial growth of two-dimensional single-crystalline GaSe domains on graphene

    SciTech Connect (OSTI)

    Li, Xufan; Basile, Leonardo; Huang, Bing; Ma, Cheng; Lee, Jaekwang; Vlassiouk, Ivan V.; Puretzky, Alexander A.; Lin, Ming -Wei; Chi, Miaofang; Idrobo Tapia, Juan Carlos; Rouleau, Christopher M.; Sumpter, Bobby G.; Yoon, Mina; Geohegan, David B.; Xiao, Kai

    2015-07-22

    Two-dimensional (2D) van der Waals (vdW) heterostructures are a family of artificially-structured materials that promise tunable optoelectronic properties for devices with enhanced functionalities. Compared to stamping, direct epitaxy of vdW heterostructures is ideal for clean interlayer interfaces and scalable device fabrication. Here, we explore the synthesis and preferred orientations of 2D GaSe atomic layers on graphene (Gr) by vdW epitaxy. Guided by the wrinkles on graphene, GaSe nuclei form that share a predominant lattice orientation. Due to vdW epitaxial growth many nuclei grow as perfectly aligned crystals and coalesce to form large (tens of microns), single-crystal flakes. Through theoretical investigations of interlayer energetics, and measurements of preferred orientations by atomic-resolution STEM and electron diffraction, a 10.9 interlayer rotation of the GaSe lattice with respect to the underlying graphene is found to be the most energetically preferred vdW heterostructure with the largest binding energy and the longest-range ordering. These GaSe/Gr vdW heterostructures exhibit an enhanced Raman E21g band of monolayer GaSe along with highly-quenched photoluminescence due to strong charge transfer. Despite the very large lattice mismatch of GaSe/Gr through vdW epitaxy, the predominant orientation control and convergent formation of large single-crystal flakes demonstrated here is promising for the scalable synthesis of large-area vdW heterostructures for the development of new optical and optoelectronic devices.

  4. Van der Waals Epitaxial Growth of Single-Crystal Two-Dimensional GaSe on Graphene

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

    Li, Xufan; Basile, Leonardo; Huang, Bing; Ma, Cheng; Lee, Jaekwang; Vlassiouk, Ivan V.; Puretzky, Alexander A.; Lin, Ming-Wei; Chi, Miaofang; Idrobo Tapia, Juan Carlos; et al

    2015-07-22

    Two-dimensional (2D) van der Waals (vdW) heterostructures are a family of artificially-structured materials that promise tunable optoelectronic properties for devices with enhanced functionalities. Compared to stamping, direct epitaxy of vdW heterostructures is ideal for clean interlayer interfaces and scalable device fabrication. Here, we explore the synthesis and preferred orientations of 2D GaSe atomic layers on graphene (Gr) by vdW epitaxy. Guided by the wrinkles on graphene, GaSe nuclei form that share a predominant lattice orientation. Due to vdW epitaxial growth many nuclei grow as perfectly aligned crystals and coalesce to form large (tens of microns), single-crystal flakes. Through theoretical investigationsmoreof interlayer energetics, and measurements of preferred orientations by atomic-resolution STEM and electron diffraction, a 10.9 interlayer rotation of the GaSe lattice with respect to the underlying graphene is found to be the most energetically preferred vdW heterostructure with the largest binding energy and the longest-range ordering. These GaSe/Gr vdW heterostructures exhibit an enhanced Raman E21g band of monolayer GaSe along with highly-quenched photoluminescence due to strong charge transfer. Despite the very large lattice mismatch of GaSe/Gr through vdW epitaxy, the predominant orientation control and convergent formation of large single-crystal flakes demonstrated here is promising for the scalable synthesis of large-area vdW heterostructures for the development of new optical and optoelectronic devices.less

  5. LBL-37525 UC-404 Surface Recombination in Semiconductors J.M...

    Office of Scientific and Technical Information (OSTI)

    ... L e t t . 48,1362 (1984) 1151 M. Lannoo and P. Friedel: Atomic and Electronc Structure of Surfaces, Theoretical Foundations (Springer-Verlag, Berlin, 1991). 16 R.H. Bartram an ...

  6. LBL-37525 UC-404 Surface Recombination in Semiconductors J.M...

    Office of Scientific and Technical Information (OSTI)

    J.M. Langer* and W. Walukiewicz** "Institute of Physics Polish Academy of Sciences Al. ... J. M. LANGERl AND W. WALUKIEWICZ2 1Institute of Physics Polish Academy of Sciences, Al. ...

  7. Fifty Years of Progress, 1937-1987 [Lawrence Berkeley Laboratory (LBL, LBNL)

    DOE R&D Accomplishments [OSTI]

    Budinger, T. F. (ed.)

    1987-01-01

    This booklet was prepared for the 50th anniversary of medical and biological research at the Donner Laboratory and the Lawrence Berkeley Laboratory of the University of California. The intent is to present historical facts and to highlight important facets of fifty years of accomplishments in medical and biological sciences. A list of selected scientific publications from 1937 to 1960 is included to demonstrate the character and lasting importance of early pioneering work. The organizational concept is to show the research themes starting with the history, then discoveries of medically important radionuclides, then the use of accelerated charged particles in therapy, next human physiology studies then sequentially studies of biology from tissues to macromolecules; and finally studies of the genetic code.

  8. D:\\0myfiles\\DOE Policy (LBL) Blackout Final\\final-blackout-body...

    Office of Environmental Management (EM)

    ... and for the operations planning horizon at the CONTROL ... modeled to capture any problems crossing such boundaries." ... What Constitutes an Operating Emergency? An operating ...

  9. The occurrence and wave properties of H⁺-, He⁺-, and O⁺-band EMIC waves observed by the Van Allen Probes

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

    Saikin, A. A.; Zhang, J. -C.; Allen, R. C.; Smith, C. W.; Kistler, L. M.; Spence, H. E.; Torbert, R. B.; Kletzing, C. A.; Jordanova, Vania K.

    2015-09-26

    We perform a statistical study of electromagnetic ion cyclotron (EMIC) waves detected by the Van Allen Probes mission to investigate the spatial distribution of their occurrence, wave power, ellipticity, and normal angle. The Van Allen Probes have been used which allow us to explore the inner magnetosphere (1.1 to 5.8 RE). Magnetic field measurements from the Electric and Magnetic Field Instrument Suite and Integrated Science on board the Van Allen Probes are used to identify EMIC wave events for the first 22 months of the mission operation (8 September 2012 to 30 June 2014). EMIC waves are examined in H⁺-,more » He⁺-, and O⁺-bands. Over 700 EMIC wave events have been identified over the three different wave bands (265 H⁺-band events, 438 He⁺-band events, and 68 O⁺-band events). EMIC wave events are observed between L = 2 – 8, with over 140 EMIC wave events observed below L = 4. The results show that H⁺-band EMIC waves have two peak magnetic local time (MLT) occurrence regions: pre-noon (09:00 < MLT ≤ 12:00) and afternoon (15:00 < MLT ≤ 17:00) sectors. He⁺-band EMIC waves feature an overall stronger dayside occurrence. O⁺-band EMIC waves have one peak region located in the morning sector at lower L shells (L < 4). He⁺-band EMIC waves average the highest wave power overall (>0.1 nT²/Hz), especially in the afternoon sector. Ellipticity observations reveal that linearly polarized EMIC waves dominate in lower L shells.« less

  10. The occurrence and wave properties of H⁺-, He⁺-, and O⁺-band EMIC waves observed by the Van Allen Probes

    SciTech Connect (OSTI)

    Saikin, A. A.; Zhang, J. -C.; Allen, R. C.; Smith, C. W.; Kistler, L. M.; Spence, H. E.; Torbert, R. B.; Kletzing, C. A.; Jordanova, Vania K.

    2015-09-26

    We perform a statistical study of electromagnetic ion cyclotron (EMIC) waves detected by the Van Allen Probes mission to investigate the spatial distribution of their occurrence, wave power, ellipticity, and normal angle. The Van Allen Probes have been used which allow us to explore the inner magnetosphere (1.1 to 5.8 RE). Magnetic field measurements from the Electric and Magnetic Field Instrument Suite and Integrated Science on board the Van Allen Probes are used to identify EMIC wave events for the first 22 months of the mission operation (8 September 2012 to 30 June 2014). EMIC waves are examined in H⁺-, He⁺-, and O⁺-bands. Over 700 EMIC wave events have been identified over the three different wave bands (265 H⁺-band events, 438 He⁺-band events, and 68 O⁺-band events). EMIC wave events are observed between L = 2 – 8, with over 140 EMIC wave events observed below L = 4. The results show that H⁺-band EMIC waves have two peak magnetic local time (MLT) occurrence regions: pre-noon (09:00 < MLT ≤ 12:00) and afternoon (15:00 < MLT ≤ 17:00) sectors. He⁺-band EMIC waves feature an overall stronger dayside occurrence. O⁺-band EMIC waves have one peak region located in the morning sector at lower L shells (L < 4). He⁺-band EMIC waves average the highest wave power overall (>0.1 nT²/Hz), especially in the afternoon sector. Ellipticity observations reveal that linearly polarized EMIC waves dominate in lower L shells.

  11. C{sub 6}H{sub 6}/Au(111): Interface dipoles, band alignment, charging energy, and van der Waals interaction

    SciTech Connect (OSTI)

    Abad, E.; Martinez, J. I.; Flores, F.; Ortega, J.; Dappe, Y. J.

    2011-01-28

    We analyze the benzene/Au(111) interface taking into account charging energy effects to properly describe the electronic structure of the interface and van der Waals interactions to obtain the adsorption energy and geometry. We also analyze the interface dipoles and discuss the barrier formation as a function of the metal work-function. We interpret our DFT calculations within the induced density of interface states (IDIS) model. Our results compare well with experimental and other theoretical results, showing that the dipole formation of these interfaces is due to the charge transfer between the metal and benzene, as described in the IDIS model.

  12. Julie Crenshaw Van Fleet

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

    ... Why are you assuming that the use of TRONA causes no changes in any of the emitted pollutants, harm to health, or a nuisance that causes people to cough? During December of 2006 ...

  13. Abe Van Luik

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

    CBFO oversees and owns the Waste Isolation Pilot Plant (WIPP). Abe joined CBFO after several decades of working on the Yucca Mountain Project in Nevada, where he served as Senior ...

  14. Combining density functional and incremental post-Hartree-Fock approaches for van der Waals dominated adsorbate-surface interactions: Ag{sub 2}/graphene

    SciTech Connect (OSTI)

    Lara-Castells, María Pilar de; Mitrushchenkov, Alexander O.; Stoll, Hermann

    2015-09-14

    A combined density functional (DFT) and incremental post-Hartree-Fock (post-HF) approach, proven earlier to calculate He-surface potential energy surfaces [de Lara-Castells et al., J. Chem. Phys. 141, 151102 (2014)], is applied to describe the van der Waals dominated Ag{sub 2}/graphene interaction. It extends the dispersionless density functional theory developed by Pernal et al. [Phys. Rev. Lett. 103, 263201 (2009)] by including periodic boundary conditions while the dispersion is parametrized via the method of increments [H. Stoll, J. Chem. Phys. 97, 8449 (1992)]. Starting with the elementary cluster unit of the target surface (benzene), continuing through the realistic cluster model (coronene), and ending with the periodic model of the extended system, modern ab initio methodologies for intermolecular interactions as well as state-of-the-art van der Waals-corrected density functional-based approaches are put together both to assess the accuracy of the composite scheme and to better characterize the Ag{sub 2}/graphene interaction. The present work illustrates how the combination of DFT and post-HF perspectives may be efficient to design simple and reliable ab initio-based schemes in extended systems for surface science applications.

  15. Persistent photoconductivity in two-dimensional Mo1-xW xSe2–MoSe2 van der Waals heterojunctions

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

    Puretzky, Alexander A.; Basile, Leonardo; Idrobo, Juan Carlos; Rouleau, Christopher M.; Geohegan, David B.; Xiao, Kai; Li, Xufan; Lin, Ming -Wei; Wang, Kei

    2016-02-16

    Van der Waals (vdW) heterojunctions consisting of vertically-stacked individual or multiple layers of two-dimensional (2D) layered semiconductors, especially the transition metal dichalcogenides (TMDs), are fascinating new artificial solids just nanometers-thin that promise novel optoelectronic functionalities due to the sensitivity of their electronic and optical properties to strong quantum confinement and interfacial interactions. Here, monolayers of n-type MoSe2 and p-type Mo1-xW xSe2–MoSe2 are grown by vapor transport methods, then transferred and stamped to form artificial vdW heterostructures with different interlayer orientations. Atomic-resolution Z-contrast electron microscopy and electron diffraction are used to characterize both the individual monolayers and the atomic registry betweenmore » layers in the bilayer vdW heterostructures. These measurements are compared with photoluminescence and low-frequency Raman spectroscopy, which indicates strong interlayer coupling in heterostructures. Remarkably, the heterojunctions exhibit an unprecedented photoconductivity effect that persists at room temperature for several days. This persistent photoconductivity is shown to be tunable by applying a gate bias that equilibrates the charge distribution. Furthermore, these measurements indicate that such ultrathin vdW heterojunctions can function as rewritable optoelectronic switches or memory elements under time-dependent photo-illumination, an effect which appears promising for new monolayer TMDs-based optoelectronic devices applications.« less

  16. Including screening in van der Waals corrected density functional theory calculations: The case of atoms and small molecules physisorbed on graphene

    SciTech Connect (OSTI)

    Silvestrelli, Pier Luigi; Ambrosetti, Alberto

    2014-03-28

    The Density Functional Theory (DFT)/van der Waals-Quantum Harmonic Oscillator-Wannier function (vdW-QHO-WF) method, recently developed to include the vdW interactions in approximated DFT by combining the quantum harmonic oscillator model with the maximally localized Wannier function technique, is applied to the cases of atoms and small molecules (X=Ar, CO, H{sub 2}, H{sub 2}O) weakly interacting with benzene and with the ideal planar graphene surface. Comparison is also presented with the results obtained by other DFT vdW-corrected schemes, including PBE+D, vdW-DF, vdW-DF2, rVV10, and by the simpler Local Density Approximation (LDA) and semilocal generalized gradient approximation approaches. While for the X-benzene systems all the considered vdW-corrected schemes perform reasonably well, it turns out that an accurate description of the X-graphene interaction requires a proper treatment of many-body contributions and of short-range screening effects, as demonstrated by adopting an improved version of the DFT/vdW-QHO-WF method. We also comment on the widespread attitude of relying on LDA to get a rough description of weakly interacting systems.

  17. High-field magnetoresistance and de Haas--van Alphen effect in antiferromagnetic PrB sub 6 and NdB sub 6

    SciTech Connect (OSTI)

    Onuki, Y.; Umezawa, A.; Kwok, W.K.; Crabtree, G.W. ); Nishihara, M.; Yamazaki, T.; Omi, T.; Komatsubara, T. )

    1989-12-01

    The transport properties and the de Haas--van Alphen (dHvA) effect have been measured for antiferromagnetic PrB{sub 6} and NdB{sub 6}. The number of conduction electrons is approximately one per unit cell. The magnetoresistance shows the existence of open orbits, implying a multiply connected Fermi surface. The angular dependence of the magnetoresistance is roughly similar to that of the reference material, LaB{sub 6}. The dHvA data in PrB{sub 6} show both paramagnetic and antiferromagnetic Fermi surfaces. The antiferromagnetic Fermi surface arises from new magnetic Brillouin zone boundaries and antiferromagnetic gaps introduced by the magnetic order, and the paramagnetic Fermi surface from magnetic breakdown through the small antiferromagnetic gaps in high field. Hybridization between the conduction electrons and the {ital f} electrons has been observed through the cyclotron masses, which in PrB{sub 6} are three times larger than the corresponding masses of LaB{sub 6}. In NdB{sub 6} only the antiferromagnetic Fermi surface, quite different from those of LaB{sub 6} and PrB{sub 6}, has been observed.

  18. High field magnetoresistance and de Haas-van Alphen effect in antiferromagnetic PrB/sub 6/ and NdB/sub 6/

    SciTech Connect (OSTI)

    Onuki, Y.; Umezawa, A.; Kwok, W.K.; Crabtree, G.W.; Nishihara, M.; Yamazaki, T.; Omi, T.; Komatsubara, T.

    1987-08-01

    The transport properties and the de Haas-van Alphen (dHvA) effect have been measured for antiferromagnetic PrB/sub 6/ and NdB/sub 6/. The number of conduction electrons is approximately one per unit cell. The magnetoresistance shows the existence of open orbits implying a multiply connected Fermi surface. The angular dependence of the magnetoresistance is roughly similar to that of the reference material, LaB/sub 6/. The dHvA data in PrB/sub 6/ shows both paramagnetic and antiferromagnetic Fermi surfaces. The antiferromagnetic Fermi surface arises from new magnetic Brillouin zone boundaries and antiferromagnetic gaps introduced by the magnetic order, and the paramagnetic Fermi surface from magnetic breakdown through the small antiferromagnetic gaps in high field. Hybridization between the conduction electrons and the f electrons has been observed through the cyclotron masses, which in PrB/sub 6/ are three times larger than the corresponding masses of LaB/sub 6/. In NdB/sub 6/ only the antiferromagnetic Fermi surface, quite different from those of LaB/sub 6/ and PrB/sub 6/, has been observed. 26 refs., 10 figs., 3 tabs.

  19. Correlated Pc4-5 ULF waves, whistler-mode chorus, and pulsating aurora observed by the Van Allen Probes and ground-based systems

    SciTech Connect (OSTI)

    Jaynes, A. N.; Lessard, M. R.; Takahashi, K.; Ali, A. F.; Malaspina, D. M.; Michell, R. G.; Spanswick, E. L.; Baker, D. N.; Blake, J. B.; Cully, C.; Donovan, E. F.; Kletzing, C. A.; Reeves, G. D.; Samara, M.; Spence, H. E.; Wygant, J. R.

    2015-10-28

    Theory and observations have linked equatorial VLF waves with pulsating aurora for decades, invoking the process of pitch angle scattering of tens of keV electrons in the equatorial magnetosphere. Recently published satellite studies have strengthened this argument, by showing strong correlation between pulsating auroral patches and both lower-band chorus and tens of keV electron modulation in the vicinity of geosynchronous orbit. Additionally, a previous link has been made between Pc4–5 compressional pulsations and modulation of whistler-mode chorus using Time History of Events and Macroscale Interactions during Substorms. In the current study, we present simultaneous in situ observations of structured chorus waves and an apparent field line resonance (in the Pc4–5 range) as a result of a substorm injection, observed by Van Allen Probes, along with ground-based observations of pulsating aurora. We demonstrate the likely scenario being one of substorm-driven Pc4–5 ULF pulsations modulating chorus waves, and thus providing the driver for pulsating particle precipitation into the Earth's atmosphere. Interestingly, the modulated chorus wave and ULF wave periods are well correlated, with chorus occurring at half the periodicity of the ULF waves. We also show, for the first time, a particular few-Hz modulation of individual chorus elements that coincides with the same modulation in a nearby pulsating aurora patch. As a result, such modulation has been noticed as a high-frequency component in ground-based camera data of pulsating aurora for decades and may be a result of nonlinear chorus wave interactions in the equatorial region.

  20. Correlated Pc4-5 ULF waves, whistler-mode chorus, and pulsating aurora observed by the Van Allen Probes and ground-based systems

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

    Jaynes, A. N.; Lessard, M. R.; Takahashi, K.; Ali, A. F.; Malaspina, D. M.; Michell, R. G.; Spanswick, E. L.; Baker, D. N.; Blake, J. B.; Cully, C.; et al

    2015-10-28

    Theory and observations have linked equatorial VLF waves with pulsating aurora for decades, invoking the process of pitch angle scattering of tens of keV electrons in the equatorial magnetosphere. Recently published satellite studies have strengthened this argument, by showing strong correlation between pulsating auroral patches and both lower-band chorus and tens of keV electron modulation in the vicinity of geosynchronous orbit. Additionally, a previous link has been made between Pc4–5 compressional pulsations and modulation of whistler-mode chorus using Time History of Events and Macroscale Interactions during Substorms. In the current study, we present simultaneous in situ observations of structured chorusmore » waves and an apparent field line resonance (in the Pc4–5 range) as a result of a substorm injection, observed by Van Allen Probes, along with ground-based observations of pulsating aurora. We demonstrate the likely scenario being one of substorm-driven Pc4–5 ULF pulsations modulating chorus waves, and thus providing the driver for pulsating particle precipitation into the Earth's atmosphere. Interestingly, the modulated chorus wave and ULF wave periods are well correlated, with chorus occurring at half the periodicity of the ULF waves. We also show, for the first time, a particular few-Hz modulation of individual chorus elements that coincides with the same modulation in a nearby pulsating aurora patch. As a result, such modulation has been noticed as a high-frequency component in ground-based camera data of pulsating aurora for decades and may be a result of nonlinear chorus wave interactions in the equatorial region.« less

  1. A polynomial approach to determining the van Everdingen-Hurst dimensionless variables P(t/sub d/) and Q(t/sub d/) for water encroachment modeling

    SciTech Connect (OSTI)

    Klins, M.A.; Bouchard, A.J.; Cable, C.L.

    1986-01-01

    Classical reservoir engineering reserve estimates and simulation studies for water-driven reservoirs have relied on the traditional van-Everdingen/Hurst approach for Carter/Tracy modification to estimate water encroachment. The predicated volume of water influxed into a reservoir is a function of either of two dimensionless variables, P(t/sub d/) or Q(t/sub d/), depending on which encroachment technique is employed. To estimate values of P(t/sub d/) or Q(t/sub d/), table lookup and interpolation between time entries, and for finite aquifers an additional interpolation between aquifer sizes, may be needed. The vE/H or C/T table lookup and interpolation approach holds several drawbooks. Included are (i) storage requirements for computer applications, (ii) cumbersome, time consuming application, (iii) accuracy questions due to interpolation, (iv) table limitations; finite aquifer/reservoir size ratios of less than ten, and (v) the Carter/Tracy approach requires derivatives of the P(t/sub d/) tabular values. This paper presents four sets of simple polynomials that are easy to implement in order to obtain accurate values of P(t/sub d/) of Q(t/sub d/) for either the finite or infinite radial aquifer case. Derivatives of the P(t/sub d/) polynomials have also been prepared. The average absolute error between polynomially determined values of P(t/sub d/) for finite and infinite aquifiers and the numerically correct solution is less than 0.03% and 0.02%, respectively. Similarly, average absolute errors between finite and infinite Q(t/sub d/) estimates and their numerically correct counterparts are less than 0.10% and 0.05%.

  2. Van Andel Research Institute, Los

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

    Los Alamos National Laboratory to develop detailed computational model to study lung cancer September 14, 2015 LOS ALAMOS, N.M., Sept. 14, 2015-Scientists are developing a new...

  3. Van Andel Research Institute, Los

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

    Vampire Power Is Scary All Year Round Vampire Power Is Scary All Year Round November 8, 2010 - 12:46pm Addthis Chris Stewart Senior Communicator at DOE's National Renewable Energy Laboratory Last week, U.S. Department of Energy Secretary Steven Chu posted information about slaying energy vampires on his Facebook page. (He also posted a picture of himself as a zombie, which is also is very scary!) Energy vampires are appliances that even when turned off utilize a small amount of electricity,

  4. Stefanie Van Wychen | Bioenergy | NREL

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

    Research Scientist - Biomass Analysis, National Renewable Energy Laboratory (NREL), National Bioenergy Center (NBC), 2013-present Research Technician - Biomass Analysis, NREL, NBC, ...

  5. Big Horn Wind Power Project | Open Energy Information

    Open Energy Info (EERE)

    :"","icon":"","group":"","inlineLabel":"","visitedicon":"" References "Wind Energy Data and Information Gateway (WENDI)" Retrieved from "http:en.openei.orgw...

  6. BigHorn Home Improvement Center Energy Performance: Preprint

    SciTech Connect (OSTI)

    Deru, M.; Pless, S.; Torcellini, P.

    2006-04-01

    This is one of the nation's first commercial building projects to integrate extensive high-performance design into a retail space. The extensive use of natural light, combined with energy-efficient electrical lighting design, provides good illumination and excellent energy savings. The reduced lighting loads, management of solar gains, and cool climate allow natural ventilation to meet the cooling loads. A hydronic radiant floor system, gas-fired radiant heaters, and a transpired solar collector deliver heat. An 8.9-kW roof-integrated photovoltaic (PV) system offsets a portion of the electricity.

  7. Supercomputers Help Identify Efficiency-Limiting Defects in LEDs

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

    Supercomputers Help Identify Efficiency-Limiting Defects in LEDs Supercomputers Help Identify Efficiency-Limiting Defects in LEDs July 18, 2016 Contact: Kathy Kincade, kkincade@lbl.gov, +1 510 495 2124 ChrisVanDerWalle PressReleaseImage A conceptual illustration of how defects in a crystal lattice might contribute to nonradiative recombination of electrons and holes in LEDs. Image: Peter Allen Light-emitting diodes (LEDs) have found firm footing in the lighting industry, not just for blue and

  8. Rapid enhancement of low energy (<100 eV) ion flux in response to interplanetary shocks based on two Van Allen Probes case studies: Implications for source regions and heating mechanisms

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

    Yue, Chao; Li, Wen; Reeves, Geoffrey D.; Nishimura, Yukitoshi; Zong, Qiugang; Ma, Qianli; Bortnik, Jacob; Thorne, Richard M.; Spence, Harlan E.; Kletzing, Craig A.; et al

    2016-07-15

    Interactions between interplanetary (IP) shocks and the Earth's magnetosphere manifest many important space physics phenomena including low-energy ion flux enhancements and particle acceleration. In order to investigate the mechanisms driving shock-induced enhancement of low-energy ion flux, we have examined two IP shock events that occurred when the Van Allen Probes were located near the equator while ionospheric and ground observations were available around the spacecraft footprints. We have found that, associated with the shock arrival, electromagnetic fields intensified, and low-energy ion fluxes, including H+, He+, and O+, were enhanced dramatically in both the parallel and perpendicular directions. During the 2more » October 2013 shock event, both parallel and perpendicular flux enhancements lasted more than 20 min with larger fluxes observed in the perpendicular direction. In contrast, for the 15 March 2013 shock event, the low-energy perpendicular ion fluxes increased only in the first 5 min during an impulse of electric field, while the parallel flux enhancement lasted more than 30 min. In addition, ionospheric outflows were observed after shock arrivals. From a simple particle motion calculation, we found that the rapid response of low-energy ions is due to drifts of plasmaspheric population by the enhanced electric field. Furthermore, the fast acceleration in the perpendicular direction cannot solely be explained by E × B drift but betatron acceleration also plays a role. Adiabatic acceleration may also explain the fast response of the enhanced parallel ion fluxes, while ion outflows may contribute to the enhanced parallel fluxes that last longer than the perpendicular fluxes.« less

  9. Transesterification: Laboratory Analytical Procedure (LAP) Van...

    Office of Scientific and Technical Information (OSTI)

    Wychen, S.; Laurens, L. M. L. 09 BIOMASS FUELS; 59 BASIC BIOLOGICAL SCIENCES BIOMASS; ALGAE; LABORATORY ANALYTICAL PROCEDURES; LAPS; TOTAL LIPIDS; FATTY ACID METHYL ESTERS; FAME;...

  10. Dodge B2500 dedicated CNG van

    SciTech Connect (OSTI)

    Eudy, L.

    2000-04-19

    The US Department of Energy (DOE) is promoting the use of alternative fuels and alternative fuel vehicles (AFVs). To support this activity, DOE has directed the National Renewable Energy Laboratory (NREL) to conduct projects to evaluate the performance and acceptability of light-duty AFVs. The authors tested a 1999 B2500 dedicated CNG Ram Wagon with a 5.2L V8 engine. The vehicle was run through a series of tests explained briefly in this fact sheet.

  11. NREL: Energy Sciences - Jao van de Lagemaat

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

    worked as a postdoctoral researcher at NREL. His studies focused on charge transport and recombination in dye-sensitized solar cells. His papers in this field have proven seminal...

  12. Women @ Energy: Kerstin Kleese van Dam

    Broader source: Energy.gov [DOE]

    "Working in with different science domains means that there is never a dull moment. My technical abilities and creativity are consistently challenged by their evolving requirements, pushing to create new solutions that take us to the next level." Read more from Kerstin on her profile here.

  13. VanDoc_135908_1

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

    ... Market for New Coal Power Plant Technology 0 50 100 150 200 250 300 350 400 2000 2005 2010 2015 2020 2025 2030 2035 2040 2045 2050 Coal-Fired Plant Capacity (GW) EIA Projected Coal ...

  14. On using Greenberger-Horne-Zeilinger three-particle states for superluminal communication

    SciTech Connect (OSTI)

    Jensen, Raymond

    2010-01-28

    Using a three-particle entangled system (triple) of photons, it is possible in principle to transmit signals faster than the speed of light from sender to receiver in the following manner: First, let there be an emitter of triples between sender and receiver. For every triple, photons 1 and 2 are sent to the receiver and 3, to the sender. The sender is given the choice of whether to (a) measure polarization of photon 3 or (b) destroy such information. On the other hand, the receiver measures photon correlation vs. relative polarization angle between photons 1 and 2. These correlation statistics depend on whether photon 3 polarization was (a) measured or (b) destroyed. Since this dependence is nonlocal, it is a basis for superluminal i.e. faster-than-light communication.

  15. Microsoft PowerPoint - 1_BRIAN_HORN_NMMSS Overrview-May 12 2014...

    National Nuclear Security Administration (NNSA)

    enriched uranium - Uranium in cascade - Thorium - U-233 -Lithium-6 - Plutonium - Pu-238 ... enriched uranium - Uranium in cascade - Thorium - U-233 - Plutonium - Pu-238 Reporting ...

  16. Optimal classical-communication-assisted local model of n-qubit Greenberger-Horne-Zeilinger correlations

    SciTech Connect (OSTI)

    Tessier, Tracey E.; Caves, Carlton M.; Deutsch, Ivan H.; Eastin, Bryan; Bacon, Dave

    2005-09-15

    We present a model, motivated by the criterion of reality put forward by Einstein, Podolsky, and Rosen and supplemented by classical communication, which correctly reproduces the quantum-mechanical predictions for measurements of all products of Pauli operators on an n-qubit GHZ state (or 'cat state'). The n-2 bits employed by our model are shown to be optimal for the allowed set of measurements, demonstrating that the required communication overhead scales linearly with n. We formulate a connection between the generation of the local values utilized by our model and the stabilizer formalism, which leads us to conjecture that a generalization of this method will shed light on the content of the Gottesman-Knill theorem.

  17. FY_2010_REPORTING_INSTRUCTIONS_TRANSMITTAL_8-26-10-Horn.pdf ...

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

    AND PROJECTS AGENCY WESTERN AREA POWER ADMINISTRATION 2008 report transmittal letter page 2010 Annual Planning Summary for Stanford Linear Accelerator Center Site Office (SLAC

  18. Microsoft PowerPoint - 12_BRIAN_HORN_NRC and DOE recognition...

    National Nuclear Security Administration (NNSA)

    20 days after starting, and reconciled the same day as received at NMMSS Global Laser enrichment and Paducah (SYS) -each submitted inventory less than 52 days after ...

  19. Microsoft PowerPoint - Closing Summary_Brian Horn_Pete Dessaules...

    National Nuclear Security Administration (NNSA)

    Challenge Exam 4 Summary (Cont'd) Report from the Reactor Subgroup - Discuss NMMSS issues identified by Louis Carlson on Monday May 11 - Subgroup plans to contact power reactor ...

  20. Photodissociation of (SO{sub 2}?XH) Van der Waals complexes and clusters (XH = C{sub 2}H{sub 2}, C{sub 2}H{sub 4}, C{sub 2}H{sub 6}) excited at 32?04032?090 cm{sup ?1} with formation of HSO{sub 2} and X

    SciTech Connect (OSTI)

    Makarov, Vladimir I.; Kochubei, Sergei A.; Khmelinskii, Igor

    2014-02-07

    We studied photodecomposition dynamics of (SO{sub 2}?XH) Van der Waals (VdW) complexes and clusters in gas phase, with X = C{sub 2}H, C{sub 2}H{sub 3}, and C{sub 2}H{sub 5}. SO{sub 2} was excited by frequency-doubled radiation of a tunable dye laser and resonance-enhanced multiphoton ionization was used to detect the C{sub 2}H (m/z 25), C{sub 2}H{sub 3} (m/z 27), and C{sub 2}H{sub 5} (m/z 29) ions by time-of-flight mass spectroscopy. Spectra obtained at higher nozzle pressures (P{sub 0} > 2.5 atm) indicate formation of clusters. Detailed studies of the VdW complex structure were carried out by analyzing the rotational structure of the respective action spectra. We also performed ab initio theoretical analysis of structures of the VdW complexes and transitional states leading to photodecomposition. We find that the structure of the transition state is significantly different as compared to the equilibrium ground-state structure of the respective complex. The photodecomposition mechanism depends on the hydrocarbon molecule bound to SO{sub 2}.

  1. Molecular Foundry

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

    csong@lbl.gov 510.486.6751 Marissa Libbee Scientific Engineering Associate mlibbee@lbl.gov 510.495.2308 John Turner Scientific Engineering Associate jhturner@lbl.gov 510.486.5700...

  2. Berkeley Lab Transportation and Parking Demand Management Committee

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

    510-486-6647 JMDahlgard@lbl.gov Mat Vail Facilities 510-495-2849 MEVail@lbl.gov Doug Goodman OCFO 510-486-7632 DGoodman@lbl.gov Blair Horst Facilities 510-486-4902...

  3. PERI Auto-tuning Memory Intensive Kernels

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

    PERI - Auto-tuning Memory Intensive Kernels for Multicore Samuel Williams † , Kaushik Datta † , Jonathan Carter , Leonid Oliker † , John Shalf , Katherine Yelick † , David Bailey CRD/NERSC, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA † Computer Science Division, University of California at Berkeley, Berkeley, CA 94720, USA E-mail: SWWilliams@lbl.gov, kdatta@eecs.berkeley.edu, JTCarter@lbl.gov, LOliker@lbl.gov, JShalf@lbl.gov, KAYelick@lbl.gov, DHBailey@lbl.gov

  4. Disclaimers

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

    Disclaimers Welcome to Lawrence Berkeley National Laboratory A Department of Energy National Laboratory Managed and Operated by the University of California, engaged in fundamental, unclassified research in the public interest. Security Problems: security at lbl.gov General Questions: pid at lbl.gov DMCA or Infringement Issue: security at lbl.gov Spam or other Email Issues: help at lbl.gov Accessibility Issues: help at lbl.gov Requests to Reproduce LBL Information, Materials, or Images: Click

  5. Results from a Prototype Chicane-Based Energy Spectrometer for...

    Office of Scientific and Technical Information (OSTI)

    London ; McCormick, D. ; SLAC ; Miller, D.J. ; University Coll. London Dubna, JINR UC, Berkeley LBL, Berkeley Caltech UC, Berkeley LBL, Berkeley Cambridge U. SLAC ...

  6. Results from a Prototype Chicane-Based Energy Spectrometer for...

    Office of Scientific and Technical Information (OSTI)

    Dubna, JINR UC, Berkeley LBL, Berkeley Caltech UC, Berkeley LBL, Berkeley Cambridge U. SLAC Cambridge U. Fermilab University Coll. London SLAC less Publication...

  7. Alternative Fuels Data Center: Natural Gas Delivery Vans Support...

    Alternative Fuels and Advanced Vehicles Data Center [Office of Energy Efficiency and Renewable Energy (EERE)]

    ... Regional Heavy-Duty LNG Fueling Station March 21, 2015 Photo of a street sweeper New Hampshire Fleet Revs up With Natural Gas March 7, 2015 Photo of a truck pulling into a CNG ...

  8. Extending vanLeer's Algorithm to Multiple Dimensions. (Conference...

    Office of Scientific and Technical Information (OSTI)

    Resource Relation: Conference: MultiMat 2012 held September 2-6, 2013 in San Francisco, CA.; Related Information: Proposed for presentation at the MultiMat 2012 held September 2-6, ...

  9. Fleet DNA Project Data Summary Report for Delivery Vans

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

    Vehicles Reporting: 94 Generated: Thu Aug 07, 2014 of Days Included: 974 37 1 3 36 22 5 23 6 7 52 54 4 50 51 48 49 53 55 57 60 Deployment ID 0 20 40 60 80 94 Number of Vehicles ...

  10. Fleet DNA Project Data Summary Report for Service Vans

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

    80% 100% of Vehicles Reporting: 4 of Days Included: 29 Generated: Mon Aug 18, 2014 33 35 Deployment ID 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.0 Number of Vehicles Breakdown of ...

  11. Van Buren County, Iowa: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    Iowa Cantril, Iowa Douds, Iowa Farmington, Iowa Keosauqua, Iowa Leando, Iowa Milton, Iowa Mount Sterling, Iowa Stockport, Iowa Retrieved from "http:en.openei.orgw...

  12. Van Allen probes pinpoint driver of speeding electrons

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

    how the acceleration took place. Right now, the team believes that electromagnetic radio waves somehow excite the electrons into a higher-energy state, much like a microwave...

  13. Mysterious electron stash found hidden among Van Allen belts

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

    have confirmed a never-before-seen phenomenon-a long-lived zone of high-energy electrons residing between the inner and outer radiation belts. (Credit: NASA illustration)...

  14. Collective many-body van der Waals interactions in molecular...

    Office of Scientific and Technical Information (OSTI)

    Research Org: Argonne National Laboratory (ANL) Sponsoring Org: SC OFFICE OF BASIC ENERGY SCIENCES Country of Publication: United States Language: ENGLISH Word Cloud More Like This ...

  15. Wave-driven butterfly distribution of Van Allen belt relativistic...

    Office of Scientific and Technical Information (OSTI)

    ... half-width df, a band between f and f (ref. 51). b2 2Bt2 VPdf erf v df ff (f - fm)' (df)2 . (4) here Bt2 is the wave amplitude in units of Tesla and erf is the error function. ...

  16. Major General Hans A. Van Winkle Director of Civil Works

    Office of Legacy Management (LM)

    supported the Nation' s early atomic energy program; @ DVIW w1n SO" I"* on reC"CRa Dam, b. ... Shall maintain records of determination of eligibility and other files, documents and ...

  17. Wave-driven butterfly distribution of Van Allen belt relativistic...

    Office of Scientific and Technical Information (OSTI)

    He, Yihua 1 ; Baker, D. N. 4 ; Spence, H. E. 5 ; Funsten, H. O. 6 ; Blake, J. B. 7 + Show Author Affiliations Changsha Univ. of Science and Technology, Changsha (China). ...

  18. United Parcel Service Evaluates Hybrid Electric Delivery Vans...

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

    ... a synchronous brushless, permanent magnet motor (26-kW continuous power, 44-kW peak ... Hybrid-specific engine optimization and calibration might produce more consistent ...

  19. Isotopic Analysis At Nw Basin & Range Region (Kennedy & Van Soest...

    Open Energy Info (EERE)

    ratios and active transtensional deformation indicates a deformation-enhanced permeability and that mantle fluids can penetrate the ductile lithosphere, even in regions where...

  20. Isotopic Analysis At Cascades Region (Kennedy & Van Soest, 2007...

    Open Energy Info (EERE)

    ratios and active transtensional deformation indicates a deformation-enhanced permeability and that mantle fluids can penetrate the ductile lithosphere, even in regions where...

  1. Punam Thakur*, Russell Hardy*, Roger Nelson** and Abraham Van Luik**

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

    Pumpkin Power: Turning Food Waste into Energy Pumpkin Power: Turning Food Waste into Energy November 1, 2013 - 1:28pm Addthis Pumpkin Power: Turning Food Waste into Energy Matthew Loveless Matthew Loveless Data Integration Specialist, Office of Public Affairs What are the key facts? 1.4 billion pounds of pumpkins are produced in the U.S. each year, many of which end up in landfills or compost piles after Halloween. Oakland's EBMUD collects food waste and uses microbes to convert it into methane

  2. Molecular Foundry

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

    John Turner Scientific Engineering Associate, NCEM jhturner@lbl.gov 510.486.5700

  3. Molecular Foundry

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

    Michael Wisherop Wisherop EHS Manager mpwisherop@lbl.gov 510.486.7407

  4. Molecular Foundry

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

    Nate Hohman Nate Hohman Staff Scientist, Inorganic Nanostructures JNHohman@lbl.gov 510.486.6155

  5. PCCE-JT

    Energy Science and Technology Software Center (OSTI)

    001889MLTPL00 Pervasive Collaboratorive Computing Environment Jabber Toolkit http://dsd.lbl.gov/Collaboratories/jabber

  6. 14249 | OSTI, US Dept of Energy Office of Scientific and Technical

    Office of Scientific and Technical Information (OSTI)

    Information 9 Amazing Aerogels Public Image File(s): theflowerlow-lbl_caption

  7. Directory - 88-Inch Cyclotron

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

    Directory Control Room On-shift Operator 510-486-5088 Admin Office Kymba A'Hearn 510-495-8888 88Admin@lbl.gov Dorothy Kenlow 510-486-7535 88Admin@lbl.gov ************************************************************************************************************* Program Head Larry Phair 510-486-7958 LWPhair@lbl.gov Research Coordinator / Building Manager Mike Johnson 510-486-4389 MBJohnson@lbl.gov Operations Group Leader / Asst. Building Manager Brien Ninemire 510-486-7995 BFNinemire@lbl.gov

  8. Molecular Foundry

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

    Inorganic Nanostructures Synthesis Staff Jeff Urban Jeff Urban Facility Director jjurban@lbl.gov 510.486.4526 Emory Chan Staff Scientist emchan@lbl.gov 510.486.7874 Nate Hohman...

  9. Molecular Foundry

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

    510.486.7729 Yi Liu Yi Liu Staff Scientist yliu@lbl.gov 510.486.6287 Teresa Williams Principal Scientific Engineering Associate tewilliams@lbl.gov 510.486.6671 Liana...

  10. Molecular Foundry

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

    510.495.2893 Adam Schwartzberg Staff Engineer amschwartzberg@lbl.gov 510.495.2270 Scott Dhuey Principal Scientific Engineering Associate sddhuey@lbl.gov 510.486.4946 Simone...