Sample records for application white marsh

  1. METHODS AND APPLICATIONS White and green screening with circular

    E-Print Network [OSTI]

    Regan, Lynne

    METHODS AND APPLICATIONS White and green screening with circular polymerase extension cloning frustrating. Here, we present a stream- lined cloning strategy that incorporates a powerful white and green, or substitution libraries. Keywords: GFP; blue-white screening; circular polymerase extension cloning; Phusion

  2. White House Office of Science and Technology Policy Summer 2014 Internship Program Application Period

    Broader source: Energy.gov [DOE]

    The White House Office of Science and Technology Policy is currently accepting applications for its Summer 2014 Internship Program.  The application deadline is 11:59pm Friday, March 7.  Students...

  3. EA-1723: General Motors LLC Electric Drive Vehicle Battery and Component Manufacturing Initiative Application White Marsh, Maryland and Wixom, Michigan

    Broader source: Energy.gov [DOE]

    DOE’s Proposed Action is to provide GM with $105,387,000 in financial assistance in a cost sharing arrangement to facilitate construction and operation of a manufacturing facility to produce electric motor components and assemble an electric drive unit. This Proposed Action through the Vehicle Technologies Program will accelerate the development and production of electric-drive vehicle systems and reduce the United States’ consumption of petroleum. This Proposed Action will also meaningfully assist in the nation’s economic recovery by creating manufacturing jobs in the United States in accordance with the objectives of the Recovery Act.

  4. Salt marsh geomorphology: Physical and ecological effects on landform Keywords: salt marsh geomorphology; AGU Chapman Conference

    E-Print Network [OSTI]

    Fagherazzi, Sergio

    Editorial Salt marsh geomorphology: Physical and ecological effects on landform Keywords: salt marsh geomorphology; AGU Chapman Conference Evidence that the three-dimensional structure of salt marsh, and the ratio of marsh edge:marsh interior have all been shown to affect the distribution and density of salt

  5. Tidal Marsh Vegetation of China Camp, San Pablo Bay, California

    E-Print Network [OSTI]

    Baye, Peter R.

    2012-01-01T23:59:59.000Z

    to be spreading into the mudflat. Smaller wave- cut scarpsCamp Marsh’s fringing marsh/mudflat zone, as well as its

  6. White Light Emitting Diode Development for General Illumination Applications

    SciTech Connect (OSTI)

    James Ibbetson

    2006-05-01T23:59:59.000Z

    This report contains a summary of technical achievements during a 3-year project aimed at developing the chip and packaging technology necessary to demonstrate efficient, high flux light-emitting diode (LED) arrays using Cree's gallium nitride/silicon carbide (GaN/SiC) LED technology as the starting point. Novel chip designs and fabrication processes are described that led to high power blue LEDs that achieved 310 mW of light output at 350 mA drive current, corresponding to quantum and wall plug efficiencies of 32.5% and 26.5%, respectively. When combined with phosphor, high power white LEDs with luminous output of 67 lumens and efficacy of 57 lumens per watt were also demonstrated. Advances in packaging technology are described that enabled compact, multi-chip white LED lamp modules with 800-1000 lumens output at efficacies of up to 55 lumens per watt. Lamp modules with junction-to-ambient thermal resistance as low as 1.7 C/watt have also been demonstrated.

  7. Synthesis and optical properties of cadmium selenide quantum dots for white light-emitting diode application

    SciTech Connect (OSTI)

    Xu, Xianmei; Wang, Yilin; Gule, Teri; Luo, Qiang [School of Chemistry and Chemical Engineering, Guangxi University, Nanning 53000 (China); Zhou, Liya, E-mail: zhouliyatf@163.com [School of Chemistry and Chemical Engineering, Guangxi University, Nanning 53000 (China); Gong, Fuzhong [School of Chemistry and Chemical Engineering, Guangxi University, Nanning 53000 (China)

    2013-03-15T23:59:59.000Z

    Highlights: ? Stable CdSe QDs were synthesized by the one-step and two-level process respectively. ? The fabricated white LEDs show good white balance. ? CdSe QDs present well green to yellow band luminescence. ? CdSe QDs displayed a broad excitation band. - Abstract: Yellow light-emitting cadmium selenide quantum dots were synthesized using one-step and two-step methods in an aqueous medium. The structural luminescent properties of these quantum dots were investigated. The obtained cadmium selenide quantum dots displayed a broad excitation band suitable for blue or near-ultraviolet light-emitting diode applications. White light-emitting diodes were fabricated by coating the cadmium selenide samples onto a 460 nm-emitting indium gallium nitrite chip. Both samples exhibited good white balance. Under a 20 mA working current, the white light-emitting diode fabricated via the one-step and two-step methods showed Commission Internationale de l’Éclairage coordinates at (0.27, 0.23) and (0.27, 0.33), respectively, and a color rendering index equal to 41 and 37, respectively. The one-step approach was simpler, greener, and more effective than the two-step approach. The one-step approach can be enhanced by combining cadmium selenide quantum dots with proper phosphors.

  8. NOPR Marsh | Department of Energy

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed offOCHCO2:Introduction toManagement ofConverDyn NOPR ConverDyn NOPR ConverDyn MoreMarsh NOPR Marsh

  9. EA-1869: Supplement to General Motors Corp., Electric Vehicle/Battery Manufacturing Application, White Marsh, Maryland, and Wixom, Michigan (DOE/EA-1723-S1)

    Broader source: Energy.gov [DOE]

    Based on the analysis in the Environmental Assessment DOE determined that its proposed action, to award a federal grant to General Motors to establish an electric motor components manufacturing and electric drive assembly facility would result in no significant adverse impacts.

  10. Redesigning Marsh Creek Dam to allow Chinook salmon passage, flood protection, and mercury sedimentation

    E-Print Network [OSTI]

    McNulty, M. Eliza; Wickland, Matthew

    2003-01-01T23:59:59.000Z

    J. E. , 1998. Marsh Creek Watershed Mercury Assessmentbe possible for all of Marsh Creek to be an accessible andD. , unpublished. Marsh Creek mercury assessment and

  11. Fall-run chinook salmon habitat assessment : lower Marsh Creek, Contra Costa, CA

    E-Print Network [OSTI]

    Levine, Jessie; Stewart, Rosalyn

    2004-01-01T23:59:59.000Z

    mean streamflow data, Marsh Creek near Brentwood CA, Marchmean streamflow data, Marsh Creek near Byron CA, 1952-1983.condition of the Marsh Creek watershed. Natural Heritage

  12. Application of U10Mo Fuel for Space Fission Power Applications - White Paper

    SciTech Connect (OSTI)

    James Werner

    2014-07-01T23:59:59.000Z

    A novel reactor design has been proposed for space applications to provide hundreds of watts to one or two kilowatts of electrical power. The reactor concept proposed uses the alloy U10Mo (uranium with 10 weight percent molybdenum) as the fuel. This fuel was selected for its high uranium density, high thermal conductivity, and excellent neutronic characteristics for this application. The core is surrounded by a BeO reflector. Heat is carried from the reactor by liquid metal heat pipes. A shadow shield of LiH tungsten is also utilized to reduce the neutron and gamma radiation dose to the rest of the spacecraft. This design represents a best effort at minimizing the complexity of the fission system and reducing the mass of the system. The compact nature of the block UMo core and BeO radial reflector allows the reactor diameter to be as small as practical while still meeting the neutronic and thermal power demands. This directly results in a reduced shield mass since the reactor diameter dictates the footprint of the radiation shield. The use of heat pipes offers a straightforward primary heat transport approach using proven liquid-metal heat pipe technology. Further, the elimination of a liquid core coolant system heat transport components, both at the reactor side and radiator side, contributes to reducing the total part-count and lowering system mass. The proposed reactor is using a fuel that is being developed by DOE, but there are significant differences in the fuels enrichment, operating conditions and the physical shape of the fuel itself. This paper attempts to highlight some of the basic consideration and needs that would be expected to be met in developing this fuel and qualifying it for use.

  13. Marsh Collapse Does Not Require Sea Level Rise

    E-Print Network [OSTI]

    Fagherazzi, Sergio

    Salt marshes are among the most productive ecosystems on Earth, providing nurseries for fish species and shelter and food for endangered birds. Salt marshes also mitigate the impacts of hurricanes and tsunamis, and sequester ...

  14. Spatial and Temporal Dynamics of Salt Marsh Vegetation across Scales

    E-Print Network [OSTI]

    Kim, Daehyun

    2010-10-12T23:59:59.000Z

    Biogeographic patterns across a landscape are developed by the interplay of environmental processes operating at different spatial and temporal scales. This research investigated dynamics of salt marsh vegetation on the Skallingen salt marsh...

  15. Hydrodynamics and sediment transport in natural and beneficial use marshes

    E-Print Network [OSTI]

    Kushwaha, Vaishali

    2006-10-30T23:59:59.000Z

    or siltation. The research reported here applies an engineering approach to analysis of tidal creeks in natural and beneficial use marshes of Galveston Bay. The hydrodynamic numerical model, DYNLET, was used to assess circulation in marsh channels. A...

  16. USE OF HERBICIDES TO CONTROL ALLIGATORWEED AND RESTORE NATIVE PLANTS IN MANAGED MARSHES

    E-Print Network [OSTI]

    Gray, Matthew

    Station Auburn, Alabama, USA 36849 Abstract: Marsh management is used to improve the quality of wetland alligatorweed and restoring native plants. In the year of treatment, imazapyr controlled alligatorweed better of treatment, application of triclopyr amine resulted in greater native plant biomass than imazapyr. High

  17. Modeling Tidal Marsh Distribution with Sea-Level Rise: Evaluating the Role of Vegetation, Sediment, and Upland Habitat in Marsh Resiliency

    E-Print Network [OSTI]

    2014-01-01T23:59:59.000Z

    = 2 yrs) estuarine mudflat and saltmarsh sedimentation:marshes became dominated by mudflat elevations. Under theamericanus, at low marsh and mudflat elevations were also

  18. Metals concentration in salt marshes plants and kelp around San Diego: A window to environment quality

    E-Print Network [OSTI]

    Deheyn, Dimitri

    2009-01-01T23:59:59.000Z

    in salt marshes plants and kelp around San Diego: A windowassessing levels of metals in kelp and salt marsh plants inmetals levels found in kelp and salt marsh plants reflect

  19. Invasive Spartina densiflora Brongn. Reduces Primary Productivity in a Northern California Salt Marsh

    E-Print Network [OSTI]

    Lagarde, Luc A.

    2012-01-01T23:59:59.000Z

    and Distichlis spicata in salt marshes at Humboldt Bay,Carolina Spartina alterniflora salt marsh. Estuaries 4:97-die-off of southern U.S. salt marshes. Science 310:1803-

  20. The effects of marsh edge and surface elevation on the distribution of salt marsh infauna and prey availability for nekton predators

    E-Print Network [OSTI]

    Whaley, Shannon Diann

    1997-01-01T23:59:59.000Z

    -elevation transect was positioned on the nonvegetated mudflat, one meter away from the marsh edge. Remaining transects were placed within marsh vegetation at successively greater distances from the marsh edge (I, 3, 5, 10 m away), Because marsh slope was variable...

  1. Invasive Spartina densiflora Brongn. Reduces Primary Productivity in a Northern California Salt Marsh

    E-Print Network [OSTI]

    Lagarde, Luc A.

    2012-01-01T23:59:59.000Z

    alterniflora and benthic microalgae in salt marsh food webs:dynamics of benthic microalgae in salt marshes. Pages 81-106primary productivity of microalgae and cyanobacteria (Geider

  2. Levels of metals from salt marsh plants from Southern California, USA

    E-Print Network [OSTI]

    Hoyt, Kimberly Ann

    2009-01-01T23:59:59.000Z

    alterniflora and benthic microalgae in salt marsh foodalterniflora and benthic microalgae in salt marsh foodSpartina, but feed on microalgae (Currin,1990). Isotope

  3. White Roofs

    ScienceCinema (OSTI)

    Chu, Steven

    2013-05-29T23:59:59.000Z

    Secretary Steven Chu discusses the benefits of switching to white roofs and light colored pavements.

  4. Development of infaunal populations and below-ground organic matter from three created Spartina alterniflora marshes in Galveston Bay, Texas

    E-Print Network [OSTI]

    Goldberg, Alisha Renee

    1996-01-01T23:59:59.000Z

    . 5-cm cores taken at the created salt marshes on Pelican Spit before and after the creation of the 92Marsh . . . 51 Fig. 19. Trophic relationships within the polychaetes at the 83Marsh, 87Marsh, and natural marshes during 1990/1991 (before creation... of the 92Marsh) and at the 83Marsh, 87Marsh, and 92Marsh during 1992/1994 (the two years following creaticn Of the 92Marsh) 53 Fig. 20. Plot of the relationship between the results of the two procedures for measuring sediment organic content...

  5. Assessing the Performance of 5mm White LED Light Sources for Developing-Country Applications

    E-Print Network [OSTI]

    Mills, Evan

    2007-01-01T23:59:59.000Z

    with fluorescent lighting for off-grid applications in theProject includes an Off-Grid Lighting Technology Assessmentand the market success of off-grid lighting solutions for

  6. Development of Salt Marsh Monitoring Methodology Using Remote Sensing and GIS

    E-Print Network [OSTI]

    Wang, Y.Q. "Yeqiao"

    Development of Salt Marsh Monitoring Methodology Using Remote Sensing and GIS Y.Q. Wang, PI://www.ltrs.uri.edu #12;New Satellite Data in Salt Marsh Change Monitoring Given that salt marsh monitoring requires update the salt marsh maps are necessary. Recent development of high spatial resolution satellite remote

  7. NAME: Elkhorn Slough Tidal Marsh Restoration: Building Resilience with the Beneficial Reuse of Sediment

    E-Print Network [OSTI]

    US Army Corps of Engineers

    stormwater runoff. EXPECTED BENEFITS: Habitats, particularly tidal marsh, intertidal mudflat, and soft

  8. Rhodes Marsh Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualProperty Edit with form History FacebookRegenesysRenewableStrategiesRhodes Marsh Geothermal

  9. Rhodes Marsh Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:Ezfeedflag JumpID-f < RAPID‎ | RoadmapRenewableGeothermalsource History ViewRhodes Marsh

  10. Teels Marsh Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere IRaghuraji Agro Industries PvtStratosolar Jump to:HoldingsTechint Spa JumpTVC JumpTeels Marsh Geothermal Area

  11. A review of "Scholar Bishop: The Recollections and Diary of Narcissus Marsh." by Raymond Gillespie ed.

    E-Print Network [OSTI]

    Maureen E. Mulvihill

    2004-01-01T23:59:59.000Z

    : The Recollections and Diary of Narcissus Marsh, 1638-1696. Cork: Cork University Press, 2003. vi + 100 pp. Paper ?17.60. Irish Narratives Series, edited by David Fitzpatrick. Review by MAUREEN E. MULVIHILL, PRINCETON RESEARCH FORUM, NEW JERSEY. A broadly..., if modestly slim, new work on arguably the premier bookman of seventeenth-century Ireland: Narcissus Marsh (1638- 1713). An English cleric from Hannington, Wiltshire, Marsh became Provost of Trinity College Dublin, founder of Marsh?s Library in Dublin...

  12. Effect of chronic oil pollution on salt-marsh nitrogen fixation (acetylene redution). [Spartina alterniflora

    SciTech Connect (OSTI)

    Thomson, A.D.; Webb, K.L.

    1984-03-01T23:59:59.000Z

    Annual acetylene reduction rates associated with intertidal communities in a chronically oil polluted Virgina salt marsh were compared to rates measured in an undisturbed marsh. Chronic oil treatment resulted in visible damage to the higher plants of the Spartina alterniflora zones; however, vegetation-associated acetylene reduction was not different from the untreated control. Sediment rates generally were affected little by oil application, except during the summer when rates in the median tidal elevation zones were considerably higher than those of the control. Acetylene reduction occurred in all transects, each of which extended from upper mudflat to the Spartina patens zone. Intertidal sediment acetylene reduction was patchy, both spatially and seasonally. Estimated rates were greatest near the surface; free-living bacterial N/sub 2/ fixation activity averaged 2.23 mg N per m/sup 2/ per d (range = undetectable to 365 mg N per m/sup 2/ per d) in the untreated and 3.17 mg N per m/sup 2/ per d (range = undetectable to 564 mg N per m/sup 2/ per d) in the oil-treated marsh during the year. Vegetation-associated N/sub 2/ fixation activity yielded highest overall mean rates (156 mg N per M/sub 2/ per d). The seasonal pattern of sediment and vegetation-associated fixation may be controlled by temperature and availability of oxidizable substrates. 39 references, 2 figures, 5 tables.

  13. EA-1723: Final Environmental Assessment

    Broader source: Energy.gov [DOE]

    General Motors LLC Electric Drive Vehicle Battery and Component Manufacturing Initiative Application White Marsh, Maryland and Wixom, Michigan

  14. Anthropogenic modification of New England salt marsh landscapes

    E-Print Network [OSTI]

    Bertness, Mark D.

    and eutrophication. On the seaward border of these marshes, nitrogen eutrophication stimulated by local shoreline of the common reed, Phragmites, by means of nitrogen eutrophication caused by the removal of the woody

  15. Geomorphic structure of tidal hydrodynamics in salt marsh creeks

    E-Print Network [OSTI]

    Fagherazzi, Sergio

    of the tidal signal within the marsh area. Citation: Fagherazzi, S., M. Hannion, and P. D'Odorico (2008 by elegant hydrological and geomorphological theories [Gupta et al., 1980; Rodriguez-Iturbe and Valdes, 1979

  16. Wave attenuation over coastal salt marshes under storm surge conditions

    E-Print Network [OSTI]

    Möller, Iris; Kudella, Matthias; Rupprecht, Franziska; Spencer, Tom; Paul, Maike; van Wesenbeeck, Bregje K.; Wolters, Guido; Jensen, Kai; Bouma, Tjeerd J.; Miranda-Lange, Martin; Schimmels, Stefan

    2014-09-29T23:59:59.000Z

    that wave dissipation over submerged salt marsh canopies is 43 dependent on water depth and incident wave energy, and that hydrodynamic conditions may exist 44 beyond which marshes lose their wave dissipating effect6,17,18. The existence of such conditions... 45 makes intuitive sense, as the orbital wave motion that is affected by the submerged vegetation 46 canopy decreases with increasing depth and decreasing incident wave energy. Existing empirical 47 studies of wave reduction over vegetated canopies...

  17. A comparison of physical characteristics between transplanted and natural Spartina alterniflora marshes in lower Galveston Bay, Texas

    E-Print Network [OSTI]

    Delaney, Timothy Patrick

    1994-01-01T23:59:59.000Z

    Five natural and ten transplanted Spartina alterniflora marshes in the Lower Galveston Bay System were compared to determine if there were significantly different physical characteristics associated with each type of marsh. The transplanted marshes...

  18. Modeling power-plant impacts on multipopulation systems: application of loop analysis to the Hudson River white perch population

    SciTech Connect (OSTI)

    Barnthouse, L.W.

    1981-12-01T23:59:59.000Z

    The white perch population of the Hudson River suffers unusually high mortality due to impingement and entrainment at power plants. The long-term consequences of this mortality for the Hudson River ecosystem depend in part on interactions between the white perch population and its prey, competitors, and predators, many of which are themselves subject to mortality at power plants. Size multipopulation models were analyzed, using a technique known as loop analysis, to determine how patterns of interaction affect population responses to stress and to identify the parameters that have the greatest influence on those responses. These theoretical results, together with information on life history and vulnerability to power plants for Hudson River fish and macroinvertebrate populations, were used to assess the likely effects of power plant mortality on the white perch population and its prey, competitors, and predators. The results suggest that effects of interactions with other populations are insufficient to offset the effects of entrainment and impingement on the Hudson River white perch population. The results also suggest that if mortality imposed by power plants does cause a substantial decline in the white perch population, then piscivore populations in the Hudson River should not be noticeably affected, a complementary increase in the abundance of competitors that are relatively invulnerable to power plants should occur, and a shift in the distribution of biomass within the white perch population toward the older age classes should occur.

  19. Modeling Tidal Freshwater Marsh Sustainability in the Sacramento–San Joaquin Delta Under a Broad Suite of Potential Future Scenarios

    E-Print Network [OSTI]

    Swanson, Kathleen M.; Drexler, Judith Z.; Fuller, Christopher C.; Schoellhamer, David H.

    2015-01-01T23:59:59.000Z

    Tidal Freshwater Marsh Sustainability in the Sacramento–Sanof pulsing events to sustainability. Estuaries Coasts 18:Evaluating tidal marsh sustainability in the face of sea-

  20. Sustainability of a Tidal Freshwater Marsh Exposed to a Long-term Hydrologic Barrier and Sea Level Rise

    E-Print Network [OSTI]

    Vermont, University of

    a tidal fresh- water marsh perpendicular to the Patuxent River (Maryland) channel has created a northern elevation change . Accretion . Tidal freshwater marsh . Seasonal sedimentation . Jug Bay . Patuxent River

  1. Modeling Tidal Freshwater Marsh Sustainability in the Sacramento–San Joaquin Delta Under a Broad Suite of Potential Future Scenarios

    E-Print Network [OSTI]

    Swanson, Kathleen M.; Drexler, Judith Z.; Fuller, Christopher C.; Schoellhamer, David H.

    2015-01-01T23:59:59.000Z

    Francisco region. California Energy Commission. Publicationfour marshes in high and low energy fluvial environments asMarshes situated in high-energy zones were margin- ally more

  2. Electrophoretic Deposition of Highly Efficient Phosphors for White Solid State Lighting using near UV-Emitting LEDs /

    E-Print Network [OSTI]

    Choi, Jae Ik

    2014-01-01T23:59:59.000Z

    application in white light emitting diode,” J. Mater. Res. ,phosphors for white light emitting diodes (LEDs)”, 220 thconverted white light emitting diodes by electrophoretic

  3. Vegetation and sediment characteristics of created and natural Spartina alterniflora marshes in Lower Galveston Bay, Texas

    E-Print Network [OSTI]

    Albertson, Andrea Kai

    1998-01-01T23:59:59.000Z

    Five natural and ten created Spartina altemiflora marshes in the Lower Galveston Bay System, Texas, were compared to determine if there were significantly different vegetative and sediment characteristics associated with each marsh type. Vegetative...

  4. Impact of bioaugmentation on crude oil degradation in salt-marsh-sediment microcosms

    E-Print Network [OSTI]

    Neralla, Srinivasan

    1994-01-01T23:59:59.000Z

    Bioremediation is the method of choice for eliminating oil from marshes and is dependent on microorganisms capable of mineralizing oil. Because populations of oil degrading microorganisms are low in marshes there is a potential for increasing...

  5. Factors influencing algal biomass in hydrologically dynamic salt ponds in a subtropical salt marsh

    E-Print Network [OSTI]

    Miller, Carrie J.

    2009-05-15T23:59:59.000Z

    by channels and shallow ponds that are subject to flooding by winds, tides, and storm surges. Coastal salt marshes are widely regarded as zones of high macrophyte productivity. However, microalgae may contribute more to salt marsh productivity than previously...

  6. Oil bioremediation in salt marsh mesocosms as influenced by nitrogen, phosphorus, and bacterial seeding

    E-Print Network [OSTI]

    Wright, Alan Lee

    1995-01-01T23:59:59.000Z

    Glasshouse experiments were conducted to determine the effects of N and P fertilization and bacterial seeding on crude oil degradation in salt marsh mesocosms containing marsh soil and Spartina alterniflora. Fertilization with urea, NH4, and N03...

  7. The Role of Population-based Diversity on Productivity: Considerations for Restored Spartina alterniflora Salt Marshes

    E-Print Network [OSTI]

    Lee, Courtney T

    2014-08-13T23:59:59.000Z

    Plant genetic diversity can augment ecosystem functions in habitats with low plant species diversity. Salt marshes are typically species-depauperate, a condition that is exacerbated when marshes are restored with a single species such as Spartina...

  8. Impact of bioaugmentation on crude oil degradation in salt-marsh-sediment microcosms 

    E-Print Network [OSTI]

    Neralla, Srinivasan

    1994-01-01T23:59:59.000Z

    Bioremediation is the method of choice for eliminating oil from marshes and is dependent on microorganisms capable of mineralizing oil. Because populations of oil degrading microorganisms are low in marshes there is a potential for increasing...

  9. Oil bioremediation in salt marsh mesocosms as influenced by nitrogen, phosphorus, and bacterial seeding 

    E-Print Network [OSTI]

    Wright, Alan Lee

    1995-01-01T23:59:59.000Z

    Glasshouse experiments were conducted to determine the effects of N and P fertilization and bacterial seeding on crude oil degradation in salt marsh mesocosms containing marsh soil and Spartina alterniflora. Fertilization with urea, NH4, and N03...

  10. Vegetation and sediment characteristics of created and natural Spartina alterniflora marshes in Lower Galveston Bay, Texas 

    E-Print Network [OSTI]

    Albertson, Andrea Kai

    1998-01-01T23:59:59.000Z

    and sediment parameters were compared on the basis of marsh type, age, habitat zone and microhabitat type. Created marshes were characterized by consistently taller stems and greater live plant biomass, but lower densities of live and dead stems and lower...

  11. Abstract We explored the generality of the processes mediating shrub zonation in western Atlantic salt marsh-

    E-Print Network [OSTI]

    Pennings, Steven C.

    salt marsh- es by comparing the results of our experiments in Geor- gia, USA with previous studies from salt marshes. Within the shrub zone, physical stress increased at lower elevations, shrubs at lower gerardi in Rhode Island salt marshes. However, markedly different processes appear to occur further

  12. Impact of sheep grazing on juvenile sea bass, Dicentrarchus labrax L., in tidal salt marshes

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Impact of sheep grazing on juvenile sea bass, Dicentrarchus labrax L., in tidal salt marshes P L., from sheep grazed and ungrazed tidal salt marshes were com- pared qualitatively. Juvenile sea bass colonise the salt marsh at ¯ood during 43% of the spring tides which inundate the salt

  13. Modeling Tidal Marsh Distribution with Sea-Level Rise: Evaluating the Role of Vegetation, Sediment, and Upland

    E-Print Network [OSTI]

    Kelly, Maggi

    and lowest sediment concentrations, the island marshes became dominated by mudflat elevations. Under the same

  14. Dredging as remediation for white phosphorus contamination at Eagle River Flats, Alaska

    SciTech Connect (OSTI)

    Walsh, M.R.; Collins, C.M.

    1998-08-01T23:59:59.000Z

    The Eagle River Flats impact area is a Ft. Richardson Superfund site. It is a salt marsh that is contaminated with white phosphorus (WP), and remediation of sediments in permanently ponded areas may require dredging. A remotely piloted dredging system was designed, constructed, and deployed at the Flats as part of the overall site remediation feasibility study. Experience gained over two years of engineering study and contract operation indicates that, although feasible and effective, this alternative is slow, difficult, and very expensive.

  15. Coastal Marsh Vegetation Dynamics of the East Bay of Galveston Bay, Texas

    E-Print Network [OSTI]

    Johnson, Jeremy Scott

    2012-10-19T23:59:59.000Z

    marshes form partly as a function of relatively little elevation variability, where a gently sloped tidal mudflat is inhabited by marsh vegetation (Mitsch and Gosselink 1986). Because of the small elevation gradient and the disproportionately high... by Connell and Slatyer (1977), facilitation is the theory of positive interactions between two or more species. The basic premise of facilitation in coastal marshes is the trapping of sediment on bare tidal mudflats by pioneer species that leads...

  16. White Paper

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilA group currentBradley NickellApril 16, 2008 TBD-0075 -In the Matter 1 White Paper

  17. Regulation of benthic algal and animal communities by salt marsh plants: Impact of shading

    E-Print Network [OSTI]

    Whitcraft, Christine R.; Levin, Lisa A.

    2007-01-01T23:59:59.000Z

    of marine wetland microalgae and photosyn- thetic bacteria:concentrating mechanisms in microalgae. Canadian Journal ofalterni?ora and benthic microalgae in salt marsh food webs:

  18. Drought legacies influence the long-term carbon balance of a freshwater marsh

    E-Print Network [OSTI]

    Rocha, Adrian V.; Goulden, Michael L.

    2010-01-01T23:59:59.000Z

    photosynthetic carbon sequestration, primarily by inhibitingof the maximum annual carbon sequestration observed over aimpact on marsh carbon sequestration. Citation: Rocha, A.

  19. Regulation of benthic algal and animal communities by salt marsh plants: Impact of shading

    E-Print Network [OSTI]

    Whitcraft, Christine R.; Levin, Lisa A.

    2007-01-01T23:59:59.000Z

    associations among marsh plants. American Natu- ralist 144:O. Iribane. 2002. Positive plant– animal interactions in theM. Crawford, editors. Plant life in anaerobic environments.

  20. Structural Data for the Columbus Salt Marsh Geothermal Area - GIS Data

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

    Faulds, James E.

    - Columbus Marsh therefore corresponds to an area of enhanced extension and contains a nexus of fault intersections, both conducive for geothermal activity.

  1. Partitioning and Bioavailability of Polynuclear Aromatic Hydrocarbons in an Intertidal Marsh

    E-Print Network [OSTI]

    Maruya, Keith A; Horne, Alex J

    1996-01-01T23:59:59.000Z

    Pitt & Boseman 1982). The mudflat area that is the focus ofshorebirds. Three major mudflat habitats were selected forHoffman Marsh, an intertidal mudflat in east San Francisco

  2. Distribution and Invasion Potential of Limonium ramosissimum subsp. provinciale in San Francisco Estuary Salt Marshes

    E-Print Network [OSTI]

    Archbald, Gavin; Boyer, Katharyn E.

    2014-01-01T23:59:59.000Z

    on identification of Limonium spp. in the Carpinteria SaltMarsh Reserve (Carpinteria, CA). Traut BH. 2005. The role ofclimate estuarine wetland at Carpinteria, California: plant

  3. White light emitting diode as liquid crystal display backlight

    E-Print Network [OSTI]

    Soon, Chian Myau

    2007-01-01T23:59:59.000Z

    The discovery of high brightness (white) light emitting diode (LED) is considered as a real threat to the current lighting industry in various applications. One of the most promising sectors would be using white LED to ...

  4. The effect of cattle grazing on the abundance and distribution of selected macroinvertebrates in west Galveston Island salt marshes

    E-Print Network [OSTI]

    Martin, Jennifer Lynn

    2004-09-30T23:59:59.000Z

    The effect of cattle grazing on the abundance and distribution of vegetation, burrowing crabs (Uca rapax, Uca pugnax, and Sesarma cinereum), marsh periwinkles (Littoraria irrorata), horn snails (Cerithidea pliculosa), and salt marsh snails (Melampus...

  5. NGNP High Temperature Materials White Paper

    SciTech Connect (OSTI)

    Lew Lommers; George Honma

    2012-08-01T23:59:59.000Z

    This white paper is one in a series of white papers that address key generic issues of the combined construction and operating license (COL) pre-application program key generic issues for the Next Generation Nuclear Plant reactor using the prismatic block fuel technology. The purpose of the pre-application program interactions with the NRC staff is to reduce the time required for COL application review by identifying and addressing key regulatory issues and, if possible, obtaining agreements for their resolution

  6. Cestodes from Artemia parthenogenetica (Crustacea, Branchiopoda) in the Odiel Marshes, Spain

    E-Print Network [OSTI]

    Green, Andy J.

    Cestodes from Artemia parthenogenetica (Crustacea, Branchiopoda) in the Odiel Marshes, Spain/n, 41013 Seville, Spain Abstract A total of 3,300 specimens of brine shrimps Artemia parthenogenetica from the Odiel Marshes, Huelva Province, SW Spain, were studied during several seasons of 2002 and 2003

  7. Response of Salt Marsh Ponds to Eutropication Austin N. Ritter1,3

    E-Print Network [OSTI]

    Vallino, Joseph J.

    Response of Salt Marsh Ponds to Eutropication Austin N. Ritter1,3 , David Dodge1 , Linda A. Deegan2 examined the response of New England salt marsh ponds to nutrient loading via flooding tidal water as part of nutrient (70 uM nitrate and 4uM phosphate). Our results indicate that gross nitrate processing in salt

  8. Factors Affecting Carbohydrate Production and Loss in Salt Marsh Sediments of Galveston Bay

    E-Print Network [OSTI]

    Wilson, Carolyn E.

    2010-10-12T23:59:59.000Z

    Salt Marsh Mudflats ....................................................................... 1 Benthic Microalgae and EPS .......................................................... 2 Extracellular Enzymes....2 ................................................................................ 93 1 CHAPTER I INTRODUCTION Salt Marsh Mudflats Intertidal mudflats that develop along coastal shorelines are ecologically significant areas. Mudflats are formed from sediment deposits of clay, silts and sand. The important physical...

  9. Effects of Nitrate on Decomposition in Salt Marsh Peats Arianna Goodman

    E-Print Network [OSTI]

    Vallino, Joseph J.

    Effects of Nitrate on Decomposition in Salt Marsh Peats Arianna Goodman Oberlin College `13 Advisor and loss. Rapid nitrate addition to salt marshes may stimulate bacterial decomposition of existing peat, and the decomposition may contribute to creek bank destabilization and collapse. Alternately, peat deposited in high

  10. Differentiating climatic and successional influences on long-term development of a marsh

    SciTech Connect (OSTI)

    Singer, D.K.; Jackson, S.T. [Northern Arizona Univ., Flagstaff, AZ (United States); Madsen, B.J.; Wilcox, D.A. [Great Lakes Science Center, Ann Arbor, MI (United States)

    1996-09-01T23:59:59.000Z

    Comparison of long-term records of local wetland vegetation dynamics with regional, climate-forced terrestrial vegetation changes can be used to differentiate the rates and effects of autogenic successional processes and allogenic environmental change on wetland vegetation dynamics. We studied Holocene plant macrofossil and pollen sequences from Portage Marsh, a shallow, 18-ha marsh in northeastern Indiana. Between 10 000 and 5700 yr BP the basin was occupied by a shallow, open lake, while upland vegetation consisted of mesic forests of Pinus, Quercus, Ulmus, and Carya. At 5700 yr BP the open lake was replaced rapidly by a shallow marsh, while simultaneously Quercus savanna developed on the surrounding uplands. The marsh was characterized by periodic drawdowns, and the uplands by periodic fires. Species composition of the marsh underwent further changes between 3000 and 2000 yr BP. Upland pollen spectra at Portage Marsh and other sites in the region shifted towards more mesic vegetation during that period. The consistency and temporal correspondence between the changes in upland vegetation and marsh vegetation indicate that the major vegetational changes in the marsh during the Holocene resulted from hydrologic changes forced by regional climate change. Progressive shallowing of the basin by autogenic accumulation of organic sediment constrained vegetational responses to climate change but did not serve as the direct mechanism of change. 84 refs., 7 figs., 2 tabs.

  11. Variations in clay mineralogy and sediment texture of salt marsh soils on the Eastern Shore of Virginia

    SciTech Connect (OSTI)

    Robinson, S.E.; Furman, T. (Univ. of Virginia, Charlottesville, VA (United States). Dept. of Environmental Sciences)

    1993-03-01T23:59:59.000Z

    On the Eastern Shore of VA, relative sea level rise has resulted in encroachment of marsh onto upland areas. The amount and type of sediment determines the morphologic environment of the system: lagoon, mudflat, low marsh, high marsh or upland. This research is part of a study to examine the relationship between marsh soil characteristics and the production of Spartina alterniflora. The productivity of marsh vegetation depends on the import and entrapment of sediments that maintain marsh elevation and control water and nutrient availability. This work focused on distribution patterns of sediment texture and mineralogy. One meter deep cores were taken at marsh sites with 10 cm intervals homogenized for analysis. In order to distinguish potential sediment sources, samples were also taken from upland soil pits on the mainland and dredged one-half mile seaward of the barrier islands. Samples have undergone size analysis with a hydrometer and the clay fraction has been analyzed by XRD. Results from the marsh surface indicate large variations in sediment texture, but only slight differences in clay mineralogy between marshes. Barrier island marshes contain a higher average sand content than mainland marshes because of their closer proximity to barrier island beaches and inputs from overwash deposits. The clay minerals found in all marsh surface deposits are illite and chlorite, indicative of oceanic clays. The clay mineralogy of upland soils (kaolinite, chlorite, illite, vermiculite mixed-layer clay) differs from marsh surface clays, indicating that recent sediment deposited on the marsh surface is no upland soil but rather material brought in through tidal inlets. The sediment texture and clay mineralogy at different depths varies as a function of the past geomorphic and depositional history of the site. These data will be used to determine the timing of marsh development on flooded upland sites and to determine the pre-Holocene source of inorganic sediment inputs.

  12. Marsh Road Power Plant Biomass Facility | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere I Geothermal Pwer Plant Jump to:LandownersLuther,JemezMissouri: EnergyMarlboro, New York:MarquetteMarquisMarsh

  13. Habitat Evaluation Procedures (HEP) Report : Ladd Marsh, 2001 Technical Report.

    SciTech Connect (OSTI)

    Oregon Department of Fish and Wildlife

    2001-10-01T23:59:59.000Z

    Since the mid-1980s, the Oregon Department of Fish and Wildlife (ODFW) has been participating in the Bonneville Power Administration's (BPA's) efforts to mitigate for the negative impacts to fish and wildlife resulting from the development and operation of the 7 Columbia Basin Federal Hydropower System. BPA's mitigation obligations were formally recognized and mandated by the Northwest Power Act of 1980 and are guided by the Northwest Power Planning Council's (NWPPC's) Columbia Basin Fish and Wildlife Program. BPA funds fish and wildlife projects throughout the Basin to meet the habitat and population restorative goals and objectives outlined in the NWPPC's Fish and Wildlife Program and to fulfill its mitigation responsibilities under the Power Act. Impacts to wildlife resulting from hydrofacility construction/inundation were estimated using Habitat Evaluation Procedures (HEP) in the mid and late 1980s and are documented in BPA' s Wildlife Loss Assessments (Rasmussen and Wright 1990,a,b,c,d) and in the U.S. Army Corps of Engineers Lower Snake River Wildlife Habitat Compensation Evaluation (ACOE 1991). The loss assessments provided estimates of lost habitat quality and quantity for the target species selected to represent the habitat cover types impacted by hydropower construction/inundation. The NWPPC incorporated these losses into their Fish and Wildlife Program, recognizing them as the unannualized losses attributable to the construction/inundation of the federal hydropower system (NWPPC 1995 and 2000, Table 1 1-4). The HEP methodology is used by wildlife managers within the Columbia Basin to determine habitat values, expressed as Habitat Units, gained through BPA-funded mitigation project work. ODFW and the other Oregon wildlife managers (i.e., U.S. Fish and Wildlife Service, Confederated Tribes of the Warms Springs Reservation of Oregon, Burns Paiute Tribe, and Confederated Tribes of the Umatilla Indian Reservation [CTUIR]) have been working together since 1991 to coordinate the planning, selection, and implementation of BPA-funded wildlife mitigation projects. In 1997, the Oregon wildlife managers developed a programmatic project for mitigation planning and implementation within Oregon. The Ladd Marsh Wildlife Area Additions project is one of many habitat acquisition and restoration projects proposed under the Oregon wildlife managers programmatic project that have been approved and recommended for funding by the NWPPC. The Ladd Marsh Wildlife Area Additions mitigation project will protect and restore wetland, riparian and other habitats on newly acquired parcels at ODFW's Ladd Marsh Wildlife Area (LMWA). Wildlife habitat values resulting from the acquisition and enhancement of Ladd Marsh Wildlife Area lands will contribute towards mitigating for habitat lost as a result of the development and operation of the Columbia Basin hydropower system. This report summarizes the HEP survey conducted in June 2001 to document the baseline habitat values on four parcels recently added to the Ladd Marsh Wildlife Area: the 309.66-acre Wallender property, the 375.54-acre Simonis property, the 161.07-acre Conley Lake property, and the 74.55-acre Becker property. The 2001 HEP Team was comprised of the following members and agencies: Susan Barnes (ODFW), Allen Childs (CTUIR), Tracy Hames (Yakama Indian Nation), Dave Larson (ODFW), Cathy Nowak (Cat Tracks Wildlife Consulting), and Ken Rutherford (ODFW). Results of the HEP will be used to (1) determine the pre-restoration habitat values of the project sites, (2) the number of Habitat Units to be credited to BPA for protection of habitats within the project area, (3) determine the enhancement potential of the sites, and (4) develop a habitat management plan for the area.

  14. SECOQC Business White Paper

    E-Print Network [OSTI]

    Solange Ghernaouti-Helie; Igli Tashi; Thomas Laenger; Christian Monyk

    2009-04-27T23:59:59.000Z

    In contemporary cryptographic systems, secret keys are usually exchanged by means of methods, which suffer from mathematical and technology inherent drawbacks. That could lead to unnoticed complete compromise of cryptographic systems, without a chance of control by its legitimate owners. Therefore a need for innovative solutions exists when truly and reliably secure transmission of secrets is required for dealing with critical data and applications. Quantum Cryptography (QC), in particular Quantum Key Distribution (QKD) can answer that need. The business white paper (BWP) summarizes how secret key establishment and distribution problems can be solved by quantum cryptography. It deals with several considerations related to how the quantum cryptography innovation could contribute to provide business effectiveness. It addresses advantages and also limitations of quantum cryptography, proposes a scenario case study, and invokes standardization related issues. In addition, it answers most frequently asked questions about quantum cryptography.

  15. The use of TM imagery to monitor the general health of coastal marshes

    E-Print Network [OSTI]

    De Sousa, David Alexandre

    1994-01-01T23:59:59.000Z

    General marsh-health monitoring without field observations was demonstrated to be feasible using TM (Thematic Mapper) Imagery. As monitoring is very expensive and time-consuming because of field work and personnel required, the procedure proposed...

  16. An experimental method to increase sediment supply to a salt marsh in subsidence dominated environments

    E-Print Network [OSTI]

    Thomas, Robert C.

    2007-09-17T23:59:59.000Z

    This thesis examines the environmental conditions which led to the loss of 90% of the natural salt marsh in Galveston Island State Park since 1930 and analyzes one potential method to reduce future loss. Available data and recent studies suggest...

  17. Primary Research Paper Ecosystem response to changes in water level of Lake Ontario marshes: lessons

    E-Print Network [OSTI]

    McMaster University

    Primary Research Paper Ecosystem response to changes in water level of Lake Ontario marshesMaster University, Hamilton, ON, Canada L8S 4K1 E-mail: chowfras@mcmaster.ca Key words: restoration, water level

  18. About thurgood MArshAll College InaccordancewiththeUCSDMasterPlan,whichcalledfortheestablishment

    E-Print Network [OSTI]

    Russell, Lynn

    About thurgood MArshAll College Inaccordancewiththe." Today, the academic programs housed in Thurgood Marshall College (Contemporary Black Arts, the Public as committed leaders in a multicultural world. Thurgood Marshall College (so named in 1992 after the first

  19. Biophysical properties of salt marsh canopies — Quantifying plant stem flexibility and above ground biomass

    E-Print Network [OSTI]

    Rupprecht, F.; Möller, I.; Evans, B.; Spencer, T.; Jensen, K.

    2015-04-19T23:59:59.000Z

    with relevance to studies of habitat structure and ecosystem functioning as well as wave energy dissipation in salt marsh environments and can be used for the development of a more realistic representation of vegetation in numerical models and laboratory flume...

  20. Quantification of Salt Marsh Carbon Stocks: Integration of Remote Sensing Data and Techniques with Field Measurements

    E-Print Network [OSTI]

    Kulawardhana, Ranjani W

    2013-12-02T23:59:59.000Z

    , however, primarily have focused on dry land ecosystems that extend over large areas and have not accounted for the relatively small and scattered, though highly carbon rich, ecosystems such as mangrove swamps and salt marshes. Using data from a Spartina...

  1. An experimental method to increase sediment supply to a salt marsh in subsidence dominated environments 

    E-Print Network [OSTI]

    Thomas, Robert C.

    2007-09-17T23:59:59.000Z

    This thesis examines the environmental conditions which led to the loss of 90% of the natural salt marsh in Galveston Island State Park since 1930 and analyzes one potential method to reduce future loss. Available data and ...

  2. The effects of cattle grazing on Texas coastal salt marsh plants and birds

    E-Print Network [OSTI]

    Yeargan, Catherine A

    2001-01-01T23:59:59.000Z

    ). Lesser snow geese (Anser caerulescens) can uproot entire stands of Spartina alterniflora, Distichlis spicata and Scirpus americanus, and accelerate the conversion of vegetated marsh to mudflat or even open water (Miller et al. 1 996). Sheep grazing...

  3. Tidal salt marshes of the southeast Atlantic Coast: A community profile

    SciTech Connect (OSTI)

    Wiegert, R.G.; Freeman, B.J.

    1990-09-01T23:59:59.000Z

    This report is part of a series of community profiles on the ecology of wetland and marine communities. This particular profile considers tidal marshes of the southeastern Atlantic coast, from North Carolina south to northern Florida. Alone among the earth's ecosystems, coastal communities are subjected to a bidirectional flooding sometimes occurring twice each day; this flooding affects successional development, species composition, stability, and productivity. In the tidally influenced salt marsh, salinity ranges from less than 1 ppt to that of seawater. Dominant plant species include cordgrasses (Spartina alterniflora and S. cynosuroides), black needlerush (Juncus romerianus), and salt marsh bulrush (Scirpus robustus). Both terrestrail and aquatic animals occur in salt marshes and include herons, egrets ospreys (Pandion haliaetus), bald eagles (Haliaeetus leucocephalus), alligators (Alligator Mississippiensis), manatees (Trichecus manatus), oysters, mussels, and fiddler crabs. Currently, the only significant direct commercial use of the tidal salt marshes is by crabbers seeking the blue crab Callinectes sapidus, but the marshes are quite important recreationally, aesthetically, and educationally. 151 refs., 45 figs., 6 tabs.

  4. PEAT ACCRETION HISTORIES DURING THE PAST 6000 YEARS IN MARSHES OF THE SACRAMENTO - SAN JOAQUIN DELTA, CALIFORNIA, USA

    SciTech Connect (OSTI)

    Drexler, J Z; de Fontaine, C S; Brown, T A

    2009-07-20T23:59:59.000Z

    Peat cores were collected in 4 remnant marsh islands and 4 drained, farmed islands throughout the Sacramento - San Joaquin Delta of California in order to characterize the peat accretion history of this region. Radiocarbon age determination of marsh macrofossils at both marsh and farmed islands showed that marshes in the central and western Delta started forming between 6030 and 6790 cal yr BP. Age-depth models for three marshes were constructed using cubic smooth spline regression models. The resulting spline fit models were used to estimate peat accretion histories for the marshes. Estimated accretion rates range from 0.03 to 0.49 cm yr{sup -1} for the marsh sites. The highest accretion rates are at Browns Island, a marsh at the confluence of the Sacramento and San Joaquin rivers. Porosity was examined in the peat core from Franks Wetland, one of the remnant marsh sites. Porosity was greater than 90% and changed little with depth indicating that autocompaction was not an important process in the peat column. The mean contribution of organic matter to soil volume at the marsh sites ranges from 6.15 to 9.25% with little variability. In contrast, the mean contribution of inorganic matter to soil volume ranges from 1.40 to 8.45% with much greater variability, especially in sites situated in main channels. These results suggest that marshes in the Delta can be viewed as largely autochthonous vs. allochthonous in character. Autochthonous sites are largely removed from watershed processes, such as sediment deposition and scour, and are dominated by organic production. Allochthonous sites have greater fluctuations in accretion rates due to the variability of inorganic inputs from the watershed. A comparison of estimated vertical accretion rates with 20th century rates of global sea-level rise shows that currently marshes are maintaining their positions in the tidal frame, yet this offers little assurance of sustainability under scenarios of increased sea-level rise in the future.

  5. A Conceptual Restoration Plan and Tidal Hydrology Assessment for Reconnecting Spring Branch Creek to Suisun Marsh, Solano County, California

    E-Print Network [OSTI]

    Olson, Jessica J.

    2012-01-01T23:59:59.000Z

    Marsh. UC Berkeley LA 222 Hydrology Term Paper. Orr, M. , S.Restoration Plan and Tidal Hydrology Assessment forthree consists of a tidal hydrology analysis before and

  6. Modeling Tidal Freshwater Marsh Sustainability in the Sacramento–San Joaquin Delta Under a Broad Suite of Potential Future Scenarios

    E-Print Network [OSTI]

    Swanson, Kathleen M.; Drexler, Judith Z.; Fuller, Christopher C.; Schoellhamer, David H.

    2015-01-01T23:59:59.000Z

    Milan CS. 2012. Carbon sequestration and sediment accretionaccre- tion and carbon sequestration in impounded marshes on2010) recorded carbon sequestration rates between 1,200 to

  7. Strong blue and white photoluminescence emission of BaZrO{sub 3} undoped and lanthanide doped phosphor for light emitting diodes application

    SciTech Connect (OSTI)

    Romero, V.H. [Centro de Investigaciones en Optica, A. P. 1-948, Leon Gto., 37160 (Mexico)] [Centro de Investigaciones en Optica, A. P. 1-948, Leon Gto., 37160 (Mexico); De la Rosa, E., E-mail: elder@cio.mx [Centro de Investigaciones en Optica, A. P. 1-948, Leon Gto., 37160 (Mexico); Salas, P. [Centro de Fisica Aplicada y Tecnologia Avanzada, Universidad Nacional Autonoma de Mexico, A.P. 1-1010, Queretaro, Qro. 76000 (Mexico)] [Centro de Fisica Aplicada y Tecnologia Avanzada, Universidad Nacional Autonoma de Mexico, A.P. 1-1010, Queretaro, Qro. 76000 (Mexico); Velazquez-Salazar, J.J. [Department of Physics and Astronomy, The University of Texas at San Antonio One UTSA Circle, San Antonio TX 78249 (United States)] [Department of Physics and Astronomy, The University of Texas at San Antonio One UTSA Circle, San Antonio TX 78249 (United States)

    2012-12-15T23:59:59.000Z

    In this paper, we report the obtained strong broadband blue photoluminescence (PL) emission centered at 427 nm for undoped BaZrO{sub 3} observed after 266 nm excitation of submicron crystals prepared by hydrothermal/calcinations method. This emission is enhanced with the introduction of Tm{sup 3+} ions and is stronger than the characteristic PL blue emission of such lanthanide. The proposed mechanism of relaxation for host lattice emission is based on the presence of oxygen vacancies produced during the synthesis process and the charge compensation due to the difference in the electron valence between dopant and substituted ion in the host. Brilliant white light emission with a color coordinate of (x=0.29, y=0.32) was observed by combining the blue PL emission from the host with the green and red PL emission from Tb{sup 3+} and Eu{sup 3+} ions, respectively. The color coordinate can be tuned by changing the ratio between blue, green and red band by changing the concentration of lanthanides. - Graphical abstract: Strong blue emission from undoped BaZrO{sub 3} phosphor and white light emission by doping with Tb{sup 3+} (green) and Eu{sup 3+} (red) after 266 nm excitation. Highlights: Black-Right-Pointing-Pointer Blue emission from BaZrO{sub 3} phosphor. Black-Right-Pointing-Pointer Blue emission enhanced with Tm{sup 3+}. Black-Right-Pointing-Pointer White light from BaZrO{sup 3+} phosphor.

  8. Feeding Ecology of 0-Group Sea Bass, Dicentrarchus labrax, in Salt Marshes of Mont Saint Michel Bay (France)

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    bass Dicentrarchus labrax is among the most abundant and exploited fish species of Eu- ropean coastsFeeding Ecology of 0-Group Sea Bass, Dicentrarchus labrax, in Salt Marshes of Mont Saint Michel Bay, France ABSTRACT: 0-group sea bass, Dicentrarchus labrax, colonize intertidal marsh creeks of Mont Saint

  9. Six years of monitoring annual changes in a freshwater marsh with SPOT HRV data

    SciTech Connect (OSTI)

    Mackey, H.E. Jr.

    1992-01-01T23:59:59.000Z

    Fifteen dates of spring-time SPOT HRV data along with near-concurrent vertical aerial photographic and phenological data from spring 1987 through spring 1992 were analyzed to monitor annual changes in a 150-hectare, southeastern floodplain marsh. The marsh underwent rapid changes during the six years from a swamp dominated by non-persistent, thermally tolerant macrophytes to persistent macrophyte and shrub-scrub communities as reactor discharges declined to Pen Branch. Savannah River flooding was also important in the timing of the shift of these wetland communities. SPOT HRV data proved to be an efficient and effective method to monitor trends in these wetland community changes.

  10. Six years of monitoring annual changes in a freshwater marsh with SPOT HRV data

    SciTech Connect (OSTI)

    Mackey, H.E. Jr.

    1992-12-01T23:59:59.000Z

    Fifteen dates of spring-time SPOT HRV data along with near-concurrent vertical aerial photographic and phenological data from spring 1987 through spring 1992 were analyzed to monitor annual changes in a 150-hectare, southeastern floodplain marsh. The marsh underwent rapid changes during the six years from a swamp dominated by non-persistent, thermally tolerant macrophytes to persistent macrophyte and shrub-scrub communities as reactor discharges declined to Pen Branch. Savannah River flooding was also important in the timing of the shift of these wetland communities. SPOT HRV data proved to be an efficient and effective method to monitor trends in these wetland community changes.

  11. Luminescent properties of Na{sub 2}CaSiO{sub 4}:Eu{sup 2+} and its potential application in white light emitting diodes

    SciTech Connect (OSTI)

    Wang, Zhijun, E-mail: wangzhijunmail@yahoo.com.cn [College of Physics Science and Technology, Hebei University, Baoding 071002 (China); Li, Panlai; Li, Ting; Zhang, Xing; Li, Qingxuan; Yang, Zhiping; Guo, Qinglin [College of Physics Science and Technology, Hebei University, Baoding 071002 (China)

    2013-06-01T23:59:59.000Z

    Graphical abstract: Na{sub 2}CaSiO{sub 4}:Eu{sup 2+} phosphor can be effectively excited by an ultraviolet and near-ultraviolet light, and produce a bright blue emission centered at 436 nm. The CIE chromaticity coordinations (x, y) of Na{sub 2}CaSiO{sub 4}:Eu{sup 2+}(NSCE)/Li{sub 2}SrSiO{sub 4}:Eu{sup 2+}(LSSE) vary with the molar ratio of the two constituents. When NSCE/LSSE is 1:3, the CIE chromaticity coordination is (0.332, 0.346), which is close to that of the natural sunlight (0.33, 0.33). The results indicate that Na{sub 2}CaSiO{sub 4}:Eu{sup 2+} may be a promising blue phosphor for UV chip-based multi-phosphor converted white light emitting diodes. Highlights: ? Na{sub 2}CaSiO{sub 4}:Eu{sup 2+} shows the blue emission with a peak at 436 nm and broad excitation band in the UV/n-UV range. ? White light with CIE coordinates (0.332, 0.346) is generated by mixing the blue phosphor with the Li{sub 2}SrSiO{sub 4}:Eu{sup 2+} yellow phosphor. ? Na{sub 2}CaSiO{sub 4}:Eu{sup 2+} would be a promising blue phosphor candidate for UV chip-based multi-phosphor converted white LEDs. - Abstract: A novel blue phosphor Na{sub 2}CaSiO{sub 4}:Eu{sup 2+} is synthesized by a high temperature solid-state reaction, and its luminescent properties are systematically studied. Na{sub 2}CaSiO{sub 4}:Eu{sup 2+} can be effectively excited by the 354 nm radiation, and create blue emission (436 nm). The emission intensity of Na{sub 2}CaSiO{sub 4}:Eu{sup 2+} is influenced by the Eu{sup 2+} doping content, and the optimal doping content is 1.5%, and the concentration quenching mechanism of Eu{sup 2+} in Na{sub 2}CaSiO{sub 4} can be attributed to the multipolar interaction. The white light with CIE coordinates (0.332, 0.346) is generated by mixing the blue phosphor Na{sub 2}CaSiO{sub 4}:Eu{sup 2+} with the yellow phosphor Li{sub 2}SrSiO{sub 4}:Eu{sup 2+}. The results indicate that Na{sub 2}CaSiO{sub 4}:Eu{sup 2+} may be a potential blue emitting phosphor for UV chip-based multi-phosphor converted white light emitting diodes.

  12. Rhonda Whiting Bill Bradbury

    E-Print Network [OSTI]

    of Libby Dam operations on the Kootenai River white sturgeon. In August 2009 the Tribe submitted a Master natural recruitment failure and uncertain prospects for restoration of successful natural recruitment

  13. The Relative Importance of Road Density and Physical Watershed Features in Determining Coastal Marsh Water

    E-Print Network [OSTI]

    McMaster University

    with overall Water Quality Index scores. Road density also showed positive correlations with total nitrate Marsh Water Quality in Georgian Bay Rachel DeCatanzaro Ã? Maja Cvetkovic Ã? Patricia Chow-Fraser Received and physical watershed features (watershed size, wetland cover, and bedrock type) on water quality in coastal

  14. The Lower Keys marsh rabbit and silver rice rat: steps toward recovery

    E-Print Network [OSTI]

    Perry, Neil Desmond

    2006-10-30T23:59:59.000Z

    salt-marsh zones (Negus et al. 1961, Goodyear 1987, Forys and Humphrey 1999a). Over the past 40 years, many of these areas were converted to ocean-side canal-based human developments. Though habitat destruction has been largely thwarted by recent...

  15. Composition of Fish Communities in a European Macrotidal Salt Marsh (the Mont Saint-Michel Bay,

    E-Print Network [OSTI]

    Boyer, Edmond

    Composition of Fish Communities in a European Macrotidal Salt Marsh (the Mont Saint-Michel Bay At least 100 fish species are known to be present in the intertidal areas (estuaries, mudflats and salt, such as estuaries and lagoons, play a nursery role for many fish species. However, in Europe little attention has

  16. Disturbance and Recovery of Salt Marsh Arthropod Communities following BP Deepwater Horizon Oil Spill

    E-Print Network [OSTI]

    Pennings, Steven C.

    Disturbance and Recovery of Salt Marsh Arthropod Communities following BP Deepwater Horizon Oil of Houston, Houston, Texas, United States of America Abstract Oil spills represent a major environmental.S. Gulf of Mexico is a hub of oil and gas exploration activities that historically have impacted

  17. Nutrient dynamics in marsh sediments contaminated by an oil spill following a flood 

    E-Print Network [OSTI]

    Harris, Benjamin Cord

    1997-01-01T23:59:59.000Z

    This research involves a study of the natural recovery of a brackish marsh impacted by an oil spill and fire in which the area was naturally enhanced with elevated nutrient levels. Flood waters during October, 1994, ruptured a group of pipelines...

  18. Temporal and spatial variation in methyl bromide emissions from a salt marsh 

    E-Print Network [OSTI]

    Drewer, Julia; Heal, Mathew R; Heal, Kate V; Smith, Keith A

    2006-01-01T23:59:59.000Z

    measurements of CH3Br emissions from a salt marsh in Scotland (56°00?N, 2°35?W) were made during one year using eight static enclosures. Net emissions showed both strong seasonal and diurnal cycles. Day-to-day maxima in emissions were associated with sunny days...

  19. Genomic and physiological footprint of the Deepwater Horizon oil spill on resident marsh fishes

    E-Print Network [OSTI]

    Whitehead, Andrew

    ­9, 2010), during the peak of oil landfall (June 28­30, 2010), and after much of the surface oilGenomic and physiological footprint of the Deepwater Horizon oil spill on resident marsh fishes June 13, 2011) The biological consequences of the Deepwater Horizon oil spill are unknown, especially

  20. Nitrogen Cycling and Ecosystem Exchanges in a Virginia Tidal Freshwater Marsh

    E-Print Network [OSTI]

    Neubauer, Scott C.

    loading due to watershed development and urbanization. We present a process-based mass balance model of N habitats for juvenile fishes, and buffering storm and flood waters (Odum et al. 1984; Mitsch and Gosselink dominated tidal freshwater marsh in the York River estuary, Virginia. The model, which was based

  1. Level and Degradation of Deepwater Horizon Spilled Oil in Coastal Marsh Sediments and Pore-Water

    E-Print Network [OSTI]

    Wang, Yang

    Level and Degradation of Deepwater Horizon Spilled Oil in Coastal Marsh Sediments and Pore the 2010 BP Macondo-1 well oil spill. Very high levels (10-28%) of organic carbon within the heavily oiled chromatograph spectra are in a remarkable narrow range among spilled oils and initial BP crude. At oiled sites

  2. Marine Micropaleontology 33 (1998) 175-202 foraminifera and total populations in salt marsh peat cores

    E-Print Network [OSTI]

    Royer, Dana

    `, E. Thomas * Department of Earth and Environmental Sciences, Wesleyan University, 265 Church Street, with rare individuals alive between 25-50 cm in the sediments. Specimens living between the sediment surface Elsevier Science B.V. All rights reserved. Keywords: foraminifera; salt marshs; living depth 1

  3. Environmental effects of dredging. Managing dredged material via thin-layer disposal in coastal marshes. Technical notes

    SciTech Connect (OSTI)

    Wilber, P.

    1993-07-01T23:59:59.000Z

    This technical note describes how dredged material can be successfully managed in an environmentally sound manner in marshes by placing it in layers of 5 to 15 cm. (Unless otherwise indicated, all layer thicknesses indicated in this report refer to material that has undergone postdisposal consolidation.) Environmental studies of this process and of the regulatory history of thin-layer disposal in marshes are summarized. General planning and monitoring considerations are described, including descriptions of the types of equipment used to place dredged material in thin layers in marshes.

  4. ASTRO-H White Paper - White Dwarf

    E-Print Network [OSTI]

    Mukai, K; Harayama, A; Hayashi, T; Ishida, M; Long, K S; Terada, Y; Tsujimoto, M

    2014-01-01T23:59:59.000Z

    Interacting binaries in which a white dwarf accretes material from a companion --- cataclysmic variables (CVs) in which the mass loss is via Roche-lobe overflow, and symbiotic stars in which the white dwarf captures the wind of a late type giant --- are relatively commonplace. They display a wide range of behaviors in the optical, X-rays, and other wavelengths, which still often baffles observers and theorists alike. They are likely to be a significant contributor to the Galactic ridge X-ray emission, and the possibility that some CVs or symbiotic stars may be the progenitors of some of the Type Ia supernovae deserves serious consideration. Furthermore, these binaries serve as excellent laboratories in which to study physics of X-ray emission from high density plasma, accretion physics, reflection, and particle acceleration. ASTRO-H is well-matched to the study of X-ray emission from many of these objects. In particular, the excellent spectral resolution of the SXS will enable dynamical studies of the X-ray e...

  5. A Conceptual Restoration Plan and Tidal Hydrology Assessment for Reconnecting Spring Branch Creek to Suisun Marsh, Solano County, California

    E-Print Network [OSTI]

    Olson, Jessica J.

    2012-01-01T23:59:59.000Z

    for Reconnecting Spring Branch Creek to Suisun Marsh, SolanoFramework CHAPTER 2. SPRING BRANCH CREEK SITE ASSESSMENT 2.1Model for Spring Branch Creek Following Reconnection CHAPTER

  6. Comparison of benthic macroinvertebrate assemblages associated with salt marshes in low and high salinity areas of Galveston Bay

    E-Print Network [OSTI]

    Pool, Suzan Samantha

    1999-01-01T23:59:59.000Z

    Two study areas in Galveston Bay, Texas were chosen to assess the species composition and abundance of benthic macroinvertebrates in salt marshes that are utilized by juvenile brown shrimp. The objectives of the study were to compare the benthic...

  7. Modeling Tidal Freshwater Marsh Sustainability in the Sacramento–San Joaquin Delta Under a Broad Suite of Potential Future Scenarios

    E-Print Network [OSTI]

    Swanson, Kathleen M.; Drexler, Judith Z.; Fuller, Christopher C.; Schoellhamer, David H.

    2015-01-01T23:59:59.000Z

    in the face of sea-level rise: a hybrid modeling approachcoastal marshes to sea-level rise: Survival or submergence?distribution with sea-level rise: evaluating the role of

  8. White light velocity interferometer

    DOE Patents [OSTI]

    Erskine, D.J.

    1999-06-08T23:59:59.000Z

    The invention is a technique that allows the use of broadband and incoherent illumination. Although denoted white light velocimetry, this principle can be applied to any wave phenomenon. For the first time, powerful, compact or inexpensive sources can be used for remote target velocimetry. These include flash and arc lamps, light from detonations, pulsed lasers, chirped frequency lasers, and lasers operating simultaneously in several wavelengths. The technique is demonstrated with white light from an incandescent source to measure a target moving at 16 m/s. 41 figs.

  9. Object technology: A white paper

    SciTech Connect (OSTI)

    Jordan, S.R.; Arrowood, L.F.; Cain, W.D.; Stephens, W.M.; Vickers, B.D.

    1992-05-11T23:59:59.000Z

    Object-Oriented Technology (OOT), although not a new paradigm, has recently been prominently featured in the trade press and even general business publications. Indeed, the promises of object technology are alluring: the ability to handle complex design and engineering information through the full manufacturing production life cycle or to manipulate multimedia information, and the ability to improve programmer productivity in creating and maintaining high quality software. Groups at a number of the DOE facilities have been exploring the use of object technology for engineering, business, and other applications. In this white paper, the technology is explored thoroughly and compared with previous means of developing software and storing databases of information. Several specific projects within the DOE Complex are described, and the state of the commercial marketplace is indicated.

  10. Synthesis and photoluminescence properties of NaLaMgWO{sub 6}:RE{sup 3+} (RE = Eu, Sm, Tb) phosphor for white LED application

    SciTech Connect (OSTI)

    Hou, Jingshan [College of Materials Science and Engineering, Dong Hua University, Shanghai 200051 (China) [College of Materials Science and Engineering, Dong Hua University, Shanghai 200051 (China); CAS Key Laboratory of Materials for Energy Conversion, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050 (China); College of Chemistry and Molecular Engineering, Peking University, Beijing 100871 (China); Yin, Xin [CAS Key Laboratory of Materials for Energy Conversion, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050 (China) [CAS Key Laboratory of Materials for Energy Conversion, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050 (China); College of Chemistry and Molecular Engineering, Peking University, Beijing 100871 (China); Huang, Fuqiang, E-mail: huangfq@mail.sic.ac.cn [CAS Key Laboratory of Materials for Energy Conversion, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050 (China) [CAS Key Laboratory of Materials for Energy Conversion, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050 (China); College of Chemistry and Molecular Engineering, Peking University, Beijing 100871 (China); Jiang, Weizhong, E-mail: jwzh@dhu.edu.cn [College of Materials Science and Engineering, Dong Hua University, Shanghai 200051 (China)] [College of Materials Science and Engineering, Dong Hua University, Shanghai 200051 (China)

    2012-06-15T23:59:59.000Z

    Highlights: ? NaLa{sub 1?x}MgWO{sub 6}:xRE{sup 3+} phosphors were synthesized by solid-state reaction method. ? Compared with Y{sub 2}O{sub 3}:Eu{sup 3+}, NaLaMgWO{sub 6}:Eu{sup 3+} performed better luminescence properties. ? The results demonstrated NaLaMgWO{sub 6} as a suitable host for RE{sup 3+}-doping. -- Abstract: Single phase of NaLa{sub 1?x}MgWO{sub 6}:xRE{sup 3+} (0 < x ?1) (RE = Eu, Sm, Tb) phosphors were prepared by solid-state reaction method. X-ray diffraction, scanning electron microscopy, the morphology energy-dispersive X-ray spectroscopy, UV–vis diffuse reflectance spectra and photoluminescence were used to characterize the samples. Under the light excitation, NaLaMgWO{sub 6}:Eu{sup 3+}, NaLaMgWO{sub 6}:Sm{sup 3+} and NaLaMgWO{sub 6}:Tb{sup 3+}, phosphors showed the characteristic emissions of Eu{sup 3+} ({sup 5}D{sub 0} ? {sup 7}F{sub 4,3,2,1}), Sm{sup 3+} ({sup 4}G{sub 5/2} ? {sup 6}H{sub 5/2,7/2,9/2}), and Tb{sup 3+} ({sup 5}D{sub 4} ? {sup 7}F{sub 6,5,4,3}), respectively. The intensity of the red emission for Na(La{sub 0.6}Eu{sub 0.4})MgWO{sub 6} is 2.5 times higher than that of (Y{sub 0.95}Eu{sub 0.05}){sub 2}O{sub 3} under blue light irradiation. The quantum efficiencies of the entitled phosphors excited under 394 nm and 464 nm are also investigated and compared with commercial phosphors Y{sub 2}O{sub 3}:Eu{sup 3+}, Sr{sub 2}Si{sub 5}N{sub 8}:Eu{sup 2+} and Y{sub 3}A{sub 5}G{sub 12}:Ce{sup 3+}. The results demonstrated NaLaMgWO{sub 6}:RE{sup 3+} phosphors as potential candidates for white light emitting diode pumped by UV or blue chip.

  11. Aquatic macroinvertebrate food resources for birds in a Texas coastal marsh

    E-Print Network [OSTI]

    Sipocz, Andrew Vincent

    1993-01-01T23:59:59.000Z

    AQUATIC MACROINVERTEBRATE FOOD RESOURCES FOR BIRDS IN A TEXAS COASTAL MARSH A Thesis by ANDREW VINCENT SIPOCZ Submitted t o the O f f i c e of Graduate Studies of Texas A&M U n i v e r s i t y i n p a r t i a l f u l f i l l m e n... t of the requirements f o r the degree of MASTER OF SCIENCE May 1993 Major Subject: W i l d l i f e and F i s h e r i e s Sciences AQUATIC MACROINVERTEBRATE FOOD RESOURCES FOR BIRDS IN A TEXAS COASTAL MARSH A Thesis by ANDREW VINCENT SIPOCZ Submitted t o Texas...

  12. Structural Data for the Columbus Salt Marsh Geothermal Area - GIS Data

    SciTech Connect (OSTI)

    Faulds, James E.

    2011-12-31T23:59:59.000Z

    Shapefiles and spreadsheets of structural data, including attitudes of faults and strata and slip orientations of faults. - Detailed geologic mapping of ~30 km2 was completed in the vicinity of the Columbus Marsh geothermal field to obtain critical structural data that would elucidate the structural controls of this field. - Documenting E? to ENE?striking left lateral faults and N? to NNE?striking normal faults. - Some faults cut Quaternary basalts. - This field appears to occupy a displacement transfer zone near the eastern end of a system of left?lateral faults. ENE?striking sinistral faults diffuse into a system of N? to NNE?striking normal faults within the displacement transfer zone. - Columbus Marsh therefore corresponds to an area of enhanced extension and contains a nexus of fault intersections, both conducive for geothermal activity.

  13. Evaluating Tidal Marsh Sustainability in the Face of Sea-Level Rise: A Hybrid Modeling Approach Applied to San Francisco Bay

    E-Print Network [OSTI]

    Kelly, Maggi

    2011-01-01T23:59:59.000Z

    on sedimentation and intertidal mudflat change in San Pablowill transition to a mudflat [9,31]. When topographicallybetween tidal marsh and mudflat habitats according to the

  14. An internship with the Galveston Bay Foundation emphasizing Coastal Marsh Restoration with Spartina alterniflora

    E-Print Network [OSTI]

    Mahmoud, Joey

    1996-01-01T23:59:59.000Z

    Bay Foundation's Seed Project in Baytown, Texas. At this location, the Foundation has a control pond where they grow cordgrass &om seedlings to mature plants ready for use in the Foundation's restoration sites. My internship study area was located... to be implemented to effectively establish the marsh vegetation and hydrology needed to start the process of restoring the wetlands. The types of vegetation used to restore the areas were mainly Spartina alrerniflora and Scirpus robosrus plants. Both...

  15. Metapopulation Ecology and Recovery of the Endangered Lower Keys Marsh Rabbit

    E-Print Network [OSTI]

    Schmidt, Paige McGee

    2011-02-22T23:59:59.000Z

    cats (Felis catus) and raccoons (Procyon lotor), sea-level rise, and hurricanes. This study sought to determine local and landscape factors that influence LKMR metapopulation ecology and dynamics and to evaluate strategies for their recovery. I... evaluated the influence of patch and landscape characteristics on LKMR densities, extinction, and colonization rates following Hurricane Wilma, and the response of LKMRs and salt marsh habitats to prescribed fire. I used estimates of population change...

  16. DUSEL Theory White Paper

    E-Print Network [OSTI]

    S. Raby; T. Walker; K. S. Babu; H. Baer; A. B. Balantekin; V. Barger; Z. Berezhiani; A. de Gouvea; R. Dermisek; A. Dolgov; P. Fileviez Perez; G. Gabadadze; A. Gal; P. Gondolo; W. Haxton; Y. Kamyshkov; B. Kayser; E. Kearns; B. Kopeliovich; K. Lande; D. Marfatia; R. N. Mohapatra; P. Nath; Y. Nomura; K. A. Olive; J. Pati; S. Profumo; R. Shrock; Z. Tavartkiladze; K. Whisnant; L. Wolfenstein

    2008-10-24T23:59:59.000Z

    The NSF has chosen the site for the Deep Underground Science and Engineering Laboratory (DUSEL) to be in Lead, South Dakota. In fact, the state of South Dakota has already stepped up to the plate and contributed its own funding for the proposed lab, see http://www.sanfordlaboratoryathomestake.org/index.html. The final decision by NSF for funding the Initial Suite of Experiments for DUSEL will be made early in 2009. At that time the NSF Science Board must make a decision. Of order 200 experimentalists have already expressed an interest in performing experiments at DUSEL. In order to assess the interest of the theoretical community, the Center for Cosmology and Astro-Particle Physics (CCAPP) at The Ohio State University (OSU) organized a 3-day DUSEL Theory Workshop in Columbus, Ohio from April 4 - 6, 2008. The workshop focused on the scientific case for six proposed experiments for DUSEL: long baseline neutrino oscillations, proton decay, dark matter, astrophysical neutrinos, neutrinoless double beta decay and N-Nbar oscillations. The outcome of this workshop is the DUSEL Theory White paper addressing the scientific case at a level which may be useful in the decision making process for policy makers at the NSF and in the U.S. Congress. In order to assess the physics interest in the DUSEL project we have posted the DUSEL Theory White paper on the following CCAPP link http://ccapp.osu.edu/whitepaper.html . Please read the white paper and, if you are interested, use the link to show your support by co-signing the white paper.

  17. Volume 3: Characterization of representative reservoirs -- South Marsh Island 73, B35K and B65G Reservoirs

    SciTech Connect (OSTI)

    Young, M.A.; Salamy, S.P.; Reeves, T.K. [BDM-Oklahoma, Inc., Bartlesville, OK (United States); Kimbrell, W.C. [Louisiana State Univ., Baton Rouge, LA (United States). Dept. of Petroleum Engineering; Sawyer, W.K. [Mathematical and Computer Services, Inc., Danville, VA (United States)

    1998-07-01T23:59:59.000Z

    This report documents the results of a detailed study of two Gulf of Mexico salt dome related reservoirs and the application of a publicly available PC-based black oil simulator to model the performances of gas injection processes to recover attic oil. The overall objective of the research project is to assess the oil reserve potential that could result from the application of proven technologies to recover bypassed oil from reservoirs surrounding piercement salt domes in the Gulf of Mexico. The specific study objective was to simulate the primary recovery and attic gas injection performance of the two subject reservoirs to: (1) validate the BOAST model; (2) quantify the attic volume; and (3) predict the attic oil recovery potential that could result from additional updip gas injection. The simulation studies were performed on the B-35K Reservoir and the B-65G Reservoir in the South Marsh Island Block 73 Field using data provided by one of the field operators. A modified PC-version of the BOAST II model was used to match the production and injection performances of these reservoirs in which numerous gas injection cycles had been conducted to recover attic oil. The historical performances of the gas injection cycles performed on both the B-35K Reservoir and B-65G Reservoir were accurately matched, and numerous predictive runs were made to define additional potential for attic oil recovery using gas injection. Predictive sensitivities were conducted to examine the impact of gas injection rate, injection volume, post-injection shut-in time, and the staging of gas injection cycles on oil recovery.

  18. Impact of dynamic feedbacks between sedimentation, sea-level rise, and biomass production on near-surface marsh stratigraphy and carbon accumulation

    E-Print Network [OSTI]

    Impact of dynamic feedbacks between sedimentation, sea-level rise, and biomass production on near Keywords: salt marsh organic sediments accretion sea-level rise belowground biomass carbon storage a b model we explore how marsh stratigraphy responds to sediment supply and the rate of sea- level rise

  19. Sandia Energy - Jonathan White

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's PossibleRadiationImplementing Nonlinear757 (1)Tara46EnergyPowerHighlights -IgalJeremyFeaturedWhite

  20. Green Light-Emitting Diode Makes Highly Efficient White Light; The Spectrum of Clean Energy Innovation (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2010-06-01T23:59:59.000Z

    Fact sheet describing NREL's green light emitting diode that can lead to higher efficiency white light used in indoor lighting applications.

  1. A review of "Scholar Bishop: The Recollections and Diary of Narcissus Marsh." by Raymond Gillespie ed. 

    E-Print Network [OSTI]

    Maureen E. Mulvihill

    2004-01-01T23:59:59.000Z

    -scale biography of Narcissus Marsh will doubtless be written, owing to the valuable spadework of McCarthy, Gillespie, and others. What we presently have in their collective good efforts is a solid, working foundation. Michael Khodarkovsky. Russia?s Steppe..., not reaching far beyond the Ob River in the east and beyond the Oka River in the southeast, spreads over the next three centuries to areas touching on the Chinese border and the coasts of the Pacific Ocean. It is the growth of the Russia?s expansion...

  2. 2-M Probe At Teels Marsh Area (Kratt, Et Al., 2008) | Open Energy

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualProperty Edit withTianlinPapersWindey Wind HometcdbInformation Teels Marsh Area Exploration

  3. 2-M Probe At Teels Marsh Area (Shevenell, Et Al., 2008) | Open Energy

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualProperty Edit withTianlinPapersWindey Wind HometcdbInformation Teels Marsh Area

  4. Anonym activities: white-and blackhat applications

    E-Print Network [OSTI]

    Jelasity, Márk

    with ISP-s: traffic filtering, sending and detecting probe packets with an intrusion detection system (IDS blackhat ­ avoid the detection of criminal activity ­ hide crucial infrastructure such as "mothership" servers, monitoring and control servers, etc whitehat ­ protect privacy ­ fight censorship #12;3 Example

  5. White LED for general illumination applications

    E-Print Network [OSTI]

    Li, Fung Yuen Ken

    2007-01-01T23:59:59.000Z

    In the 21st century, mankind faces problem of energy crisis through depletion of fossil fuels as well as global warning through the production of excessive greenhouse gases. Hence, there is an urgent need to look for new ...

  6. Monitoring seasonal and annual wetland changes in a freshwater marsh with SPOT HRV data

    SciTech Connect (OSTI)

    Mackey, H.E. Jr.

    1989-01-01T23:59:59.000Z

    Eleven dates of SPOT HRV data along with near-concurrent vertical aerial photographic and phenological data for 1987, 1988, and 1989 were evaluated to determine seasonal and annual changes in a 400-hectare, southeastern freshwater marsh. Early April through mid-May was the best time to discriminate among the cypress (Taxodium distichum)/water tupelo (Nyssa acquatica) swamp forest and the non-persistent (Ludwigia spp.) and persistent (Typha spp.) stands in this wetlands. Furthermore, a ten-fold decrease in flow rate from 11 cubic meters per sec (cms) in 1987 to one cms in 1988 was recorded in the marsh followed by a shift to drier wetland communities. The Savannah River Site (SRS), maintained by the US Department of Energy, is a 777 km{sup 2} area located in south central South Carolina. Five tributaries of the Savannah River run southwest through the SRS and into the floodplain swamp of the Savannah River. This paper describes the use of SPOT HRV data to monitor seasonal and annual trends in one of these swamp deltas, Pen Branch Delta, during a three-year period, 1987--1989.

  7. Monitoring seasonal and annual wetland changes in a freshwater marsh with SPOT HRV data

    SciTech Connect (OSTI)

    Mackey, H.E. Jr.

    1989-12-31T23:59:59.000Z

    Eleven dates of SPOT HRV data along with near-concurrent vertical aerial photographic and phenological data for 1987, 1988, and 1989 were evaluated to determine seasonal and annual changes in a 400-hectare, southeastern freshwater marsh. Early April through mid-May was the best time to discriminate among the cypress (Taxodium distichum)/water tupelo (Nyssa acquatica) swamp forest and the non-persistent (Ludwigia spp.) and persistent (Typha spp.) stands in this wetlands. Furthermore, a ten-fold decrease in flow rate from 11 cubic meters per sec (cms) in 1987 to one cms in 1988 was recorded in the marsh followed by a shift to drier wetland communities. The Savannah River Site (SRS), maintained by the US Department of Energy, is a 777 km{sup 2} area located in south central South Carolina. Five tributaries of the Savannah River run southwest through the SRS and into the floodplain swamp of the Savannah River. This paper describes the use of SPOT HRV data to monitor seasonal and annual trends in one of these swamp deltas, Pen Branch Delta, during a three-year period, 1987--1989.

  8. White Bear Lake Conservation District (Minnesota)

    Broader source: Energy.gov [DOE]

    This statute establishes the White Bear Lake Conservation District, which has the authority to set water and land use regulations for the area around White Bear Lake.

  9. Sandia National Laboratories: White Light Creation Architectures

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

    Light Creation Architectures White Light Creation Architectures Overview of SSL White Light Creation Architectures The entire spectral range of visible light can be...

  10. Lori Ann White | Department of Energy

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

    Lori Ann White About Us Lori Ann White - Science Writer, SLAC Office of Communications Most Recent President Obama Honors Sidney Drell with National Medal of Science February 4...

  11. Different Time and Energy Budgets of Lesser Snow Geese in Rice-Prairies and Coastal Marshes in Southwest Louisiana

    E-Print Network [OSTI]

    Afton, Alan D.

    are consistent with recent trends in Snow Goose numbers, which increased in rice-prairies but remained stable451 Different Time and Energy Budgets of Lesser Snow Geese in Rice-Prairies and Coastal Marshes in Southwest Louisiana JÓN EINAR JÓNSSON 1,2 AND ALAN D. AFTON 3 1 School of Renewable Natural Resources

  12. INITIAL DEVELOPMENT OF RIPARIAN AND MARSH VEGETATION ON DREDGED-MATERIAL ISLANDS IN THE SACRAMENTO-SAN JOAQUIN

    E-Print Network [OSTI]

    Standiford, Richard B.

    INITIAL DEVELOPMENT OF RIPARIAN AND MARSH VEGETATION ON DREDGED-MATERIAL ISLANDS IN THE SACRAMENTO establishment and de- velopment were monitored for 3 1/2 years on a new, dredged-material island located within elevations when de- signing future levees, dredged-material deposition areas, and fish and wildlife habitat

  13. Effect of Crude Oil and Chemical Additives on Metabolic Activity of Mixed Microbial Populations in Fresh Marsh Soils

    E-Print Network [OSTI]

    Nyman, John

    Effect of Crude Oil and Chemical Additives on Metabolic Activity of Mixed Microbial Populations remineralization rates. Crude oil, which is known to contain toxins and reduce microbial diversity organic matter (Panicum hemitomon Shult. or Sagittaria lancifolia L. dominated marshes), crude oil

  14. 3D seismic interpretation, reservoir characteristics and petroleum prospects for South Marsh Island OCS Blocks, Gulf of Mexico 

    E-Print Network [OSTI]

    Duan, Ling

    2003-01-01T23:59:59.000Z

    and interpretation techniques have been applied to interpret 3D seismic data with significantly improved accuracy. This has led to a renewed interest in the South Marsh area in an attempt to identify new plays and prospects. An interactive 3D-seismic...

  15. White Grubs in Texas Turfgrass

    E-Print Network [OSTI]

    Merchant, Michael E.; Biles, Stephen; Mott, Dale

    2004-06-24T23:59:59.000Z

    White grubs are the larval stage of insects commonly known as May or June beetles. A few species commonly damage turfgrass and other cultivated plants. This publication includes biological and management information....

  16. Aquatic macroinvertebrate food resources for birds in a Texas coastal marsh 

    E-Print Network [OSTI]

    Sipocz, Andrew Vincent

    1993-01-01T23:59:59.000Z

    AQUATIC MACROINVERTEBRATE FOOD RESOURCES FOR BIRDS IN A TEXAS COASTAL MARSH A Thesis by ANDREW VINCENT SIPOCZ Submitted t o the O f f i c e of Graduate Studies of Texas A&M U n i v e r s i t y i n p a r t i a l f u l f i l l m e n... A&M U n i v e r s i t y i n p a r t i a l f u l f i l l m e n t of the requirements f o r the degree of MASTER OF SCIENCE Approved as t o s t y l e and content by: M i l t o n W. W e l l e r ( C h a i r of Committee) W i l i i a m J . C l a r...

  17. Roark Marsh

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Scienceand Requirements RecentlyElectronicResources Resources About1 SignG.5Hanford|RoamingRoark

  18. Ms. Victoria A. White Chief Operating Officer Fermilab

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

    Program of DOE Order 451.1 B ProjectActivi ty Title: Nepese Marsh Upgrades ES&H Tracking Number: 01111 hereby verify, via my signature, the accuracy of information in the area of...

  19. Pink/White (ladies' only) Light Blue/White (ladies' only)

    E-Print Network [OSTI]

    Wechsler, Risa H.

    Pink/White (ladies' only) Light Blue/White (ladies' only) White/Stone Dill/Dark Green Slate Blue/Heather, Dill/Dark Green, Navy/White, Red/ Black, Slate Blue/Navy, Stone/Fawn, White/Stone. Sizes: S-XL, XXL/Stone Men's Colors: Black, Slate Blue/Navy, Stone/Fawn, White/Stone. Sizes: Order your official Natural Pale

  20. Astrophysics of white dwarf binaries

    E-Print Network [OSTI]

    G. Nelemans

    2007-03-13T23:59:59.000Z

    White dwarf binaries are the most common compact binaries in the Universe and are especially important for low-frequency gravitational wave detectors such as LISA. There are a number of open questions about binary evolution and the Galactic population of white dwarf binaries that can be solved using gravitational wave data and at the same time, our ever improving knowledge about these binaries will help to predict the signals that can be expected for LISA. In addition a number of white dwarf binaries will serve as verification sources for the instrument. I will discuss these issues and report recent, surprising, developments in this field. Finally I report calculations about the feasibility of complementary electro-magnetic observations which unfortunately cannot reproduce the optimistic results of Cooray et al. (2004).

  1. Development of Computer-Aided Molecular Design Methods for Bioengineering Applications

    E-Print Network [OSTI]

    Roughton, Brock Charles

    2013-12-31T23:59:59.000Z

    as environmentally friendly, or “green”, solvents due to their extremely low vapor pressure and tunable properties through alteration of the cation and anion selected (Marsh, Boxall et al. 2004; Zhao, Xia et al. 2005). Two bio-based applications of ionic liquids...

  2. White Papers on Materials for Photoelectrochemical Water Splitting...

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

    White Papers on Materials for Photoelectrochemical Water Splitting White Papers on Materials for Photoelectrochemical Water Splitting Series of white papers from the U.S....

  3. Freak waves in white dwarfs and magnetars

    SciTech Connect (OSTI)

    Sabry, R. [Theoretical Physics Group, Physics Department, Faculty of Science, Damietta University, New Damietta 34517 (Egypt); Department of Physics, College of Science and Humanitarian Studies, Salman bin Abdulaziz University, Alkharj (Saudi Arabia); International Centre for Advanced Studies in Physical Sciences, Faculty of Physics and Astronomy, Ruhr University Bochum, D-44780 Bochum (Germany); Moslem, W. M. [International Centre for Advanced Studies in Physical Sciences, Faculty of Physics and Astronomy, Ruhr University Bochum, D-44780 Bochum (Germany); Department of Physics, Faculty of Science, Port Said University, Port Said (Egypt); Centre for Theoretical Physics, The British University in Egypt (BUE), El-Shorouk City, Cairo (Egypt); Shukla, P. K. [International Centre for Advanced Studies in Physical Sciences, Faculty of Physics and Astronomy, Ruhr University Bochum, D-44780 Bochum (Germany); Department of Mechanical and Aerospace Engineering and Center for Energy Research, University of California, San Diego, La Jolla, California 92093 (United States)

    2012-12-15T23:59:59.000Z

    We report properties of ion acoustic freak waves that propagate in a plasma composed of warm ions and ultrarelativistic electrons and positrons. The dynamics of the nonlinear freak waves is governed by the nonlinear Schroedinger equation. The possible region for the freak waves to exist is defined precisely for typical parameters of white dwarfs and magnetars corona. It is found that for low wave number, the nonlinear ion-acoustic wave packets are structurally stable in magnetars corona than in white dwarfs. However, for large wave numbers the situation is opposite. The critical wave number threshold (k{sub c}), which indicates where the modulational instability sets in, is defined for both applications. It is seen that near to k{sub c} the freak wave amplitude becomes high, but it decreases whenever we stepped away from k{sub c}. For the wave numbers close to k{sub c}, the increase of the unperturbed density ratio of positrons-to-electrons ({beta}) would lead to increase the freak wave amplitude, but for larger wave numbers the amplitude decreases with the increase of {beta}.

  4. WESTERN WATER ASSESSMENT WHITE PAPER

    E-Print Network [OSTI]

    Neff, Jason

    the socio-economic effects of drought. Strategic Goals Following the findings and recommendations from two (outside of agriculture) · Few "disaster" declarations · Not even a unified roster of drought eventsWESTERN WATER ASSESSMENT WHITE PAPER Tracking Socioeconomic Impacts of Drought with Rapid Analytics

  5. White Wind Farms Strategic Communications Campaign

    E-Print Network [OSTI]

    Ford, Gina; Noulles, Mary; James, Jessica

    2014-09-03T23:59:59.000Z

    White Wind Farms is a small, startup Kansas winery located in Paola. The goal of this project was to develop a strategic marketing communications plan to assist in the growth and development of the White Wind Farms brand..

  6. White Sturgeon Bibliography, 1985 Final Report.

    SciTech Connect (OSTI)

    Fickeisen, Duane H. (Pacific Northwest National Laboratory, Richland, WA)

    1986-03-01T23:59:59.000Z

    This bibliography presents citations to the majority of published materials on white sturgeon (Acipenser transmontanus). The purpose was to assist in planning and implementing research on white sturgeon in the Columbia River system. (ACR)

  7. Magnetic field topology of accreting white dwarfs

    E-Print Network [OSTI]

    Klaus Reinsch; Fabian Euchner; Klaus Beuermann; Stefan Jordan

    2003-02-04T23:59:59.000Z

    We report first results of our systematic investigation of the magnetic field structure of rotating single magnetic white dwarfs and of white dwarfs in magnetic cataclysmic variables. The global magnetic field distributions on the isolated white dwarf HE1045-0908 and the accreting white dwarfs in EF Eri and CP Tuc have been derived from phase-resolved flux and polarization spectra obtained with FORS1 at the ESO VLT using the systematic method of Zeeman tomography.

  8. Inside the White House: Solar Panels

    Broader source: Energy.gov [DOE]

    Go inside the White House and learn about the installation of solar panels on the roof of the residence.

  9. Composition of White Lead and Paints.

    E-Print Network [OSTI]

    Fraps, G. S. (George Stronach)

    1908-01-01T23:59:59.000Z

    33-1208-5m TEXAS AGRICULTURAL EXPERIMENT 8TATIONS. BULLETIN NO. 114 NOVEMBER, 1908. Composition of White lead and Paints. G. S. FRAPS, PH. D,, Chemist. POSTOFFICE : COLLEGE STATION, BRAZOS COUNTY, TEXAS. AUSTIY, TEXAS: VON BOECKMANN... of White Lead Sold in Texas ............................... 7 Composition of Outside White Paints .................................... S Other Paints...

  10. Bayesian surface estimation for white light interferometry

    E-Print Network [OSTI]

    Hamprecht, Fred A.

    .hamprecht@iwr.uni-heidelberg.de). 1 #12;The development of white light interferometers for industry was first guidedBayesian surface estimation for white light interferometry Michael Hissmann Fred A. Hamprecht 2004/07/05 Abstract In conventional white light interferometry (WLI) surface estimation, data acquisition is followed

  11. Performance Limitations of Linear Systems over Additive White Noise Channels

    E-Print Network [OSTI]

    Li, Yiqian

    2011-01-01T23:59:59.000Z

    Control over additive white noise channels . . . . . . . 1.3Additive white noise channel . . . . . . . . . . . . . . Angaussian systems over additive gaussian wireles fading

  12. Marsh, mudflat and tidal creek assessment Cumberland Island National Seashore. Kings Bay Environmental Monitoring Program cumberland island national seashore. Technical report

    SciTech Connect (OSTI)

    Nakashima, L.D.

    1991-01-01T23:59:59.000Z

    The project was designed to determine whether backbarrier dredging for the Kings Bay Naval Base is affecting marsh habitat sustainability on Cumberland Island. Research was predicated on the hypothesis that if the operation is indeed exerting an influence on Cumberland Island, it will most likely be first perceived in the effect it has on the rates of supply and delivery of sediments to the marshes and mudflats. The authors located three comparable sites, which experience a different level of exposure to the effects of dredging. Second, we initiated a time-series of marsh/mudflat sedimentation measurements, which are expected to be continued in future years. Finally, we compared six different methods for monitoring sedimentation, all of which are currently in practice.

  13. Patterns of geographic variation in green ash (Fraxinus pennsylvanica Marsh.) in the Western Gulf region: by Keith William Hendrix.

    E-Print Network [OSTI]

    Hendrix, Keith William

    1986-01-01T23:59:59.000Z

    for the degree of MASTER OF SCIENCE December 1986 Major Subject: Forest Science P~S OF GECGRAPHIC VARIATION IN GREEN ASH (FRAXIWS PENNSYLVANICA MARSH. ) IN THE WESTERN G)LF REGION A Thesis by Approved as to style and content by: Wil ' X Lcwe (Chais...(nan of Ccnmittee) J. Charles Lee (Head of Department) . v Buijtenen (Mmnber ) J. D. Snu. th (Member ) December 1986 ABSTRACT Patterns of Geographic Variation G As (F ~i' M h. ) in the Western Gulf Region. (December 1986) Keith William Hendrix, B. S...

  14. Wind Turbine Acoustic Noise A white paper

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Wind Turbine Acoustic Noise A white paper Prepared by the Renewable Energy Research Laboratory...................................................................... 8 Sound from Wind Turbines .............................................................................................. 10 Sources of Wind Turbine Sound

  15. Gaia - A White Dwarf Discovery Machine

    E-Print Network [OSTI]

    Stefan Jordan

    2006-10-30T23:59:59.000Z

    The Gaia data will help to improve the construction of a luminosity function for the disk and the halo and will provide a more accurate determination of the age of our solar neighborhood. Moreover, reliable stellar dynamical investigations of the disk and halo components will be possible. For the first time it will be possible to test the mass-radius relation of white dwarfs in great detail. Moreover, more accurate masses of magnetic and cool white dwarfs can be expected. Gaia is also expected to discover many new pulsating white dwarfs. The Gaia measurements can also complement the measurements of gravitational waves from close white dwarf binaries with Lisa.

  16. On Powers of Gaussian White Noise

    E-Print Network [OSTI]

    Balakrishnan, A V

    2010-01-01T23:59:59.000Z

    Classical Gaussian white noise in communications and signal processing is viewed as the limit of zero mean second order Gaussian processes with a compactly supported flat spectral density as the support goes to infinity. The difficulty of developing a theory to deal with nonlinear transformations of white noise has been to interpret the corresponding limits. In this paper we show that a renormalization and centering of powers of band-limited Gaussian processes is Gaussian white noise and as a consequence, homogeneous polynomials under suitable renormalization remain white noises.

  17. White Etch Areas: Metallurgical Characterization and Atomistic...

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

    and Atomistic Modeling Presented by R. Scott Hyde of Timken Company at the 2014 Wind Turbine Tribology Seminar Timken Hyde White Etch Areas ANL Presentation Oct 2014...

  18. White dwarf mergers,White dwarf mergers, thermonuclear supernovae,thermonuclear supernovae,

    E-Print Network [OSTI]

    Hinton, Jim

    White dwarf mergers,White dwarf mergers, thermonuclear supernovae,thermonuclear supernovae fusion is ignited. Degenerate, hence runaway. #12;CO white dwarf accretes, either from companion, or from disk after merger. As it approaches maximum mass, C fusion is ignited. Degenerate, hence runaway. SN Ia

  19. ESF Consortium for Ocean Drilling White Paper

    E-Print Network [OSTI]

    Purkis, Sam

    ESF Consortium for Ocean Drilling (ECOD) White Paper An ESF Programme September 2003 #12;The, maintains the ship over a specific location while drilling into water depths up to 27,000 feet. A seven Amsterdam, The Netherlands #12;1 ESF Consortium for Ocean Drilling (ECOD) White Paper Foreword 3

  20. ENERGY WHITE PAPER Our energy future -

    E-Print Network [OSTI]

    ENERGY WHITE PAPER Our energy future - creating a low carbon economy and consumers. And we stand up for fair and open markets in the UK, Europe and the world. #12;Our energy future ENERGY WHITE PAPER Our energy future - creating a low carbon economy 1 Foreword

  1. NEW WHITE KIDNEY BEAN for Michigan

    E-Print Network [OSTI]

    NEW from MSU Snowdon NEW WHITE KIDNEY BEAN for Michigan Michigan State University Extension Bulletin E-3184 December 2012 SNOWDON is a new large- seeded white kidney bean variety from Michigan State bush growth habit. Snowdon is resistant to strains of bean rust, anthracnose and bean common mosaic

  2. Seismology of Accreting White Dwarfs

    E-Print Network [OSTI]

    Phil Arras; Dean Townsley; Lars Bildsten

    2004-10-12T23:59:59.000Z

    Pulsation modes have recently been observed in a handful of white dwarf (WD) primaries of cataclysmic variables, allowing an interesting new probe into the structure of accreting WD's. We briefly discuss the seismology of these objects, how stellar properties may be inferred from the observed mode frequencies, and mode driving mechanisms. For one pulsator, GW Lib, we have shown that a WD mass $M=1.05 M_\\odot$ and accreted envelope mass $M_{\\rm env}=0.4\\times 10^{-4} M_\\odot$ give the best match to the observed pulsation periods. A first exploration of mode driving favors $T_{\\rm eff} = 14 000 K$ and a massive WD, but more work is necessary.

  3. Dyson Spheres around White Dwarfs

    E-Print Network [OSTI]

    Semiz, ?brahim

    2015-01-01T23:59:59.000Z

    A Dyson Sphere is a hypothetical structure that an advanced civilization might build around a star to intercept all of the star's light for its energy needs. One usually thinks of it as a spherical shell about one astronomical unit (AU) in radius, and surrounding a more or less Sun-like star; and might be detectable as an infrared point source. We point out that Dyson Spheres could also be built around white dwarfs. This type would avoid the need for artificial gravity technology, in contrast to the AU-scale Dyson Spheres. In fact, we show that parameters can be found to build Dyson Spheres suitable --temperature- and gravity-wise-- for human habitation. This type would be much harder to detect.

  4. NEXT GENERATION NUCLEAR PLANT LICENSING BASIS EVENT SELECTION WHITE PAPER

    SciTech Connect (OSTI)

    Mark Holbrook

    2010-09-01T23:59:59.000Z

    The Next Generation Nuclear Plant (NGNP) will be a licensed commercial high temperature gas-cooled reactor (HTGR) plant capable of producing the electricity and high temperature process heat for industrial markets supporting a range of end-user applications. The NGNP Project has adopted the 10 CFR 52 Combined License (COL) application process, as recommended in the Report to Congress, dated August 2008, as the foundation for the NGNP licensing strategy. NRC licensing of the NGNP plant utilizing this process will demonstrate the efficacy of licensing future HTGRs for commercial industrial applications. This white paper is one in a series of submittals that will address key generic issues of the COL priority licensing topics as part of the process for establishing HTGR regulatory requirements.

  5. An Estimate of White Sharks off Central California

    E-Print Network [OSTI]

    Chapple, Taylor

    2011-01-01T23:59:59.000Z

    edge of a great white shark’s infamous dorsal fin is like aof the dorsal fin of a great white shark. (Credit: Stanford

  6. appearing white matter: Topics by E-print Network

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

    model of cortical computation: CAM 12 Ballard, Dana H. 3 Is Galactic Dark Matter White ? Astrophysics (arXiv) Summary: We calculate the expected white dwarf luminosity...

  7. altered white matter: Topics by E-print Network

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

    model of cortical computation: CAM 12 Ballard, Dana H. 3 Is Galactic Dark Matter White ? Astrophysics (arXiv) Summary: We calculate the expected white dwarf luminosity...

  8. attenuate white matter: Topics by E-print Network

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

    model of cortical computation: CAM 12 Ballard, Dana H. 2 Is Galactic Dark Matter White ? Astrophysics (arXiv) Summary: We calculate the expected white dwarf luminosity...

  9. White House Announces New Executive Order To Reduce Greenhouse...

    Energy Savers [EERE]

    White House Announces New Executive Order To Reduce Greenhouse Gas Emissions in the Federal Government White House Announces New Executive Order To Reduce Greenhouse Gas Emissions...

  10. accreting white dwarf: Topics by E-print Network

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

    Page Last Page Topic Index 1 Accreting White Dwarfs Astrophysics (arXiv) Summary: Thermonuclear (type Ia) supernovae are explosions in accreting white dwarfs, but the exact...

  11. accreting white dwarfs: Topics by E-print Network

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

    Page Last Page Topic Index 1 Accreting White Dwarfs Astrophysics (arXiv) Summary: Thermonuclear (type Ia) supernovae are explosions in accreting white dwarfs, but the exact...

  12. Synthesis and luminescence properties of rare earth activated phosphors for near UV-emitting LEDs for efficacious generation of white light

    E-Print Network [OSTI]

    Han, Jinkyu

    2013-01-01T23:59:59.000Z

    Luo, S. Lu. ?White light emitting diode by using a-Ca 2 P 2silicates for near-UV light emitting diode applications,? J.S.Y. Choi. ?White light-emitting diodes of GaN-based Sr 2

  13. Imaging planets around nearby white dwarfs

    E-Print Network [OSTI]

    M. R. Burleigh; F. J. Clarke; S. T. Hodgkin

    2002-02-09T23:59:59.000Z

    We suggest that Jovian planets will survive the late stages of stellar evolution, and that white dwarfs will retain planetary systems in wide orbits (>5AU). Utilising evolutionary models for Jovian planets, we show that infra-red imaging with 8m class telescopes of suitable nearby white dwarfs should allow us to resolve and detect companions >3Mjup. Detection of massive planetary companions to nearby white dwarfs would prove that such objects can survive the final stages of stellar evolution, place constraints on the frequency of main sequence stars with planetary systems dynamically similar to our own and allow direct spectroscopic investigation of their composition and structure.

  14. Consortium for Electric Reliability Technology Solutions Grid of the Future White Paper on

    E-Print Network [OSTI]

    LBNL-45272 Consortium for Electric Reliability Technology Solutions Grid of the Future White Paper on The Federal Role in Electric System R&D During a Time of Industry Transition: An Application of Scenario Berkeley National Laboratory CERTS Grid of the Future Project Team Carlos Martinez, Edison Technology

  15. Next Generation Nuclear Plant Structures, Systems, and Components Safety Classification White Paper

    SciTech Connect (OSTI)

    Pete Jordan

    2010-09-01T23:59:59.000Z

    This white paper outlines the relevant regulatory policy and guidance for a risk-informed approach for establishing the safety classification of Structures, Systems, and Components (SSCs) for the Next Generation Nuclear Plant and sets forth certain facts for review and discussion in order facilitate an effective submittal leading to an NGNP Combined Operating License application under 10 CFR 52.

  16. 2014 White House Tribal Nations Conference

    Office of Energy Efficiency and Renewable Energy (EERE)

    On Wednesday, December 3, President Obama will host the 2014 White House Tribal Nations Conference at the Capital Hilton in Washington, DC. The conference will provide leaders from the 566...

  17. Merging White Dwarfs and Thermonuclear Supernovae

    E-Print Network [OSTI]

    van Kerkwijk, Marten H

    2012-01-01T23:59:59.000Z

    Thermonuclear supernovae result when interaction with a companion reignites nuclear fusion in a carbon-oxygen white dwarf, causing a thermonuclear runaway, a catastrophic gain in pressure, and the disintegration of the whole white dwarf. It is usually thought that fusion is reignited in near-pycnonuclear conditions when the white dwarf approaches the Chandrasekhar mass. I briefly describe two long-standing problems faced by this scenario, and our suggestion that these supernovae instead result from mergers of carbon-oxygen white dwarfs, including those that produce sub-Chandrasekhar mass remnants. I then turn to possible observational tests, in particular those that test the absence or presence of electron captures during the burning.

  18. Strategic Facility Management: A White Paper

    Broader source: Energy.gov [DOE]

    This white paper provides information on the SFP process, its requirements and benefits, and gives a facility manager the basic tools to launch and successfully complete a SFP for the supported organization.

  19. Antonia White: no role for women writers

    E-Print Network [OSTI]

    Witt, Amanda Beth

    1992-01-01T23:59:59.000Z

    books; and Jeanne Flood and Nary Lynn Broe explore White's dramatization of her relationship with her father, which they characterize as Oedipal/incestuous. Flood in particular makes some interesting comments regarding the attitude of fathers toward...

  20. Phase transformations of nano-sized cubic boron nitride to white graphene and white graphite

    SciTech Connect (OSTI)

    Dang, Hongli; Liu, Yingdi; Xue, Wenhua; Anderson, Ryan S.; Sewell, Cody R. [Department of Physics and Engineering Physics, The University of Tulsa, Tulsa, Oklahoma 74104 (United States); Xue, Sha; Crunkleton, Daniel W. [Department of Chemical Engineering, The University of Tulsa, Tulsa, Oklahoma 74104 (United States); Institute of Alternate Energy, The University of Tulsa, Tulsa, Oklahoma 74104 (United States); Shen, Yaogen [Department of Mechanical and Biomedical Engineering, City University of Hong Kong, Kowloon (Hong Kong); Wang, Sanwu, E-mail: sanwu-wang@utulsa.edu [Department of Physics and Engineering Physics, The University of Tulsa, Tulsa, Oklahoma 74104 (United States); Institute of Alternate Energy, The University of Tulsa, Tulsa, Oklahoma 74104 (United States)

    2014-03-03T23:59:59.000Z

    We report quantum-mechanical investigations that predict the formation of white graphene and nano-sized white graphite from the first-order phase transformations of nano-sized boron nitride thin-films. The phase transformations from the nano-sized diamond-like structure, when the thickness d?>?1.4?nm, to the energetically more stable nano-sized white graphite involve low activation energies of less than 1.0?eV. On the other hand, the diamond-like structure transforms spontaneously to white graphite when d???1.4?nm. In particular, the two-dimensional structure with single-layer boron nitride, the so-called white graphene, could be formed as a result of such transformation.

  1. Efficient White SSL Component for General Illumination

    SciTech Connect (OSTI)

    Sean Evans

    2011-01-31T23:59:59.000Z

    Cree has developed a new, high-efficiency, low-cost, light emitting diode (LED) module that should be capable of replacing standard, halogen, fluorescent and metal halide lamps based on the total cost of ownership. White LEDs are produced by combining one or more saturated color LEDs with a phosphor or other light down-converting media to achieve white broad-band illumination. This two year project addressed LED chip, package and phosphor efficiency improvements to establish a technology platform suitable for low-cost, high-efficiency commercial luminaires. New phosphor materials with improved quantum efficiency at 'real-life' operating conditions were developed along with new package technology to improve the efficiency of warm white LED modules compared to the baseline technology. Specifically, Cree has successfully demonstrated warm white LED modules providing 540 lumens at a correlated color temperature (CCT) of 3000 K. The LED module had an efficacy of 102.8 lumens per watt (LPW) using 1 mm2 chips biased at 350 mA - a 27% improvement over the technology at project start (81 LPW at 3000K). The white modules also delivered an efficacy of 88 LPW at elevated junction temperatures of 125 C. In addition, a proof-of-concept 4-inch downlight luminaire produced a flux of 1183 lumens at a CCT of 2827 K and a color rendering index (CRI) of 80 using this project's phosphor developments.

  2. White flight or flight from poverty?

    E-Print Network [OSTI]

    Jego, C; Jego, Charles; Roehner, Bertrand M.

    2006-01-01T23:59:59.000Z

    The phenomenon of White flight is often illustrated by the case of Detroit whose population dropped from 1.80 million to 0.95 million between 1950 and 2000 while at the same time its Black and Hispanic component grew from 30 percent to 85 percent. But is this case really representative? The present paper shows that the phenomenon of White flight is in fact essentially a flight from poverty. As a confirmation, we show that the changes in White or Black populations are highly correlated which means that White flight is always paralleled by Black flight (and Hispanic flight as well). This broader interpretation of White flight accounts not only for the case of northern cities such as Cincinnati, Cleveland or Detroit, but for all population changes at county level, provided the population density is higher than a threshold of about 50 per square-kilometer which corresponds to moderately urbanized areas (as can be found in states like Indiana or Virginia for instance).

  3. NGNP Fuel Qualification White Paper

    SciTech Connect (OSTI)

    David A. Petti

    2010-07-01T23:59:59.000Z

    The Japanese high temperature gas reactor program is centered on the High Temperature Engineering Test Reactor (HTTR), which has a thermal power of 30 MW and 950°C maximum coolant outlet temperature. The HTTR achieved criticality in November 1998 and has undergone a series of rise-to-power tests [Fujikawa 2004]. In December 2001, an outlet temperature of 850°C was achieved and in April 2004 a temperature of 950°C was achieved. As of July 2004, the reactor had operated for 224 effective full power days (EFPD). The planned core life cycle is 660 EFPD [Verfondern 2000]. It is planned to couple a high temperature process heat application to the HTTR through its intermediate heat exchanger in the future.

  4. White House Forum on Minorities in Energy

    Broader source: Energy.gov [DOE]

    At the White House Forum on Minorities in Energy, Secretary Moniz honored the Ambassadors of the Minorities in Energy Initiative -- senior-level leaders dedicated to advancing underrepresented groups in the energy sector. Panel discussions at the event covered a wide range of issues including increasing participation in STEM fields by minorities and engaging communities in energy and climate issues.

  5. Business-driven security White paper

    E-Print Network [OSTI]

    March 2008 Business-driven security White paper Take a holistic approach to business-driven security. #12;Take a holistic approach to business-driven security. 2 Overview Today's corporate leaders face multiple challenges, including the need to innovate in extremely competitive business climates

  6. Waste and Climate Change ISWA WHITE PAPER

    E-Print Network [OSTI]

    waste prevention, recycling and reuse, biological treatment with land use of products, energy recoveryWaste and Climate Change ISWA WHITE PAPER #12;Preface 3 Re-evaluating waste: ISWA key messages 4 ISWA Commitments 6 Introduction 7 Technologies 8 Material recovery 14 Organic recovery 16 Energy

  7. White Paper on Magnetic Fusion Program Strategies

    E-Print Network [OSTI]

    of the international fusion program, the International Thermonuclear Experimental Reactor (ITER), is now halfwayWhite Paper on Magnetic Fusion Program Strategies Prepared for The President's Committee of Advisors on Science and Technology Prepared by David E. Baldwin Senior Vice President for Fusion General

  8. California White Shark Abundance SUPPLEMENTAL INFORMATION1

    E-Print Network [OSTI]

    Klimley, A. Peter

    of shark fins, white sharks were attracted to the6 research vessel using a 1 m long seal-shaped decoy the dorsal fin emerged,14 high-resolution photographs were taken with a Nikon D40X or D90 (55-200 mm lens15, dorsal fin photographs20 were recorded from the high-definition video. Once the appropriate data were

  9. PO Box 2349 White Salmon, WA 98672

    E-Print Network [OSTI]

    PO Box 2349 White Salmon, WA 98672 509.493.4468 www.newbuildings.org COMMERCIAL ROOFTOP HVAC ENERGY from utility-sponsored field service measures on small (typically 3-10 tons) commercial rooftop unitary utility-funded RTU service programs. New Buildings Institute (NBI) staff has been managing the research

  10. Platform for Hybrid Cloud Technical White Paper

    E-Print Network [OSTI]

    Chaudhuri, Surajit

    Platform for Hybrid Cloud Technical White Paper Published: September 2013 (updated) Applies to: SQL Server and Windows Azure Summary: Cloud computing brings a new paradigm shift in computing in the cloud with greater scale and flexibility. Microsoft SQL Server runs very well in the cloud environment

  11. White paper IBM Global Services Government Solutions

    E-Print Network [OSTI]

    White paper IBM Global Services Government Solutions IBM Smarter City Solutions on Cloud #12;2 IBM Smarter City Solutions on Cloud Contents 2 Disclaimer 2 Executive summary 3 Challenges faced by governments today 4 Cloud: How city managers can lower costs and improve services 9 Defining a smarter city 10

  12. IBM Software Thought Leadership White Paper

    E-Print Network [OSTI]

    IBM Software Thought Leadership White Paper August 2011 Transforming software delivery with cloud #12;2 Transforming software delivery with cloud Contents 2 Cloud: An opportunity 2 Increasing pressure and centralizing ALM and developer desktops 5 Concluding thoughts on the cloud Cloud: An opportunity The world

  13. Differential white cell count by centrifugal microfluidics.

    SciTech Connect (OSTI)

    Sommer, Gregory Jon; Tentori, Augusto M.; Schaff, Ulrich Y.

    2010-07-01T23:59:59.000Z

    We present a method for counting white blood cells that is uniquely compatible with centrifugation based microfluidics. Blood is deposited on top of one or more layers of density media within a microfluidic disk. Spinning the disk causes the cell populations within whole blood to settle through the media, reaching an equilibrium based on the density of each cell type. Separation and fluorescence measurement of cell types stained with a DNA dye is demonstrated using this technique. The integrated signal from bands of fluorescent microspheres is shown to be proportional to their initial concentration in suspension. Among the current generation of medical diagnostics are devices based on the principle of centrifuging a CD sized disk functionalized with microfluidics. These portable 'lab on a disk' devices are capable of conducting multiple assays directly from a blood sample, embodied by platforms developed by Gyros, Samsung, and Abaxis. [1,2] However, no centrifugal platform to date includes a differential white blood cell count, which is an important metric complimentary to diagnostic assays. Measuring the differential white blood cell count (the relative fraction of granulocytes, lymphocytes, and monocytes) is a standard medical diagnostic technique useful for identifying sepsis, leukemia, AIDS, radiation exposure, and a host of other conditions that affect the immune system. Several methods exist for measuring the relative white blood cell count including flow cytometry, electrical impedance, and visual identification from a stained drop of blood under a microscope. However, none of these methods is easily incorporated into a centrifugal microfluidic diagnostic platform.

  14. EIS-0376: White Wind Farm Brookings County, South Dakota

    Broader source: Energy.gov [DOE]

    This EIS evaluates the potential environmental impacts of a proposal by Western to interconnect its proposed White Wind Farm Project (Project) to Western’s transmission system at the existing White...

  15. VBH-0068- In the Matter of Ronald D. White

    Broader source: Energy.gov [DOE]

    This Decision involves a complaint filed by Ronald D. White (White or “Complainant”) under the Department of Energy (DOE) Contractor Employee Protection Program, codified at 10 C.F.R. Part 708....

  16. Modeling-Computer Simulations At White Mountains Area (Goff ...

    Open Energy Info (EERE)

    navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Modeling-Computer Simulations At White Mountains Area (Goff & Decker, 1983) Exploration Activity...

  17. Spectral modeling of gaseous metal disks around DAZ white dwarfs

    E-Print Network [OSTI]

    Barnstedt, Jürgen

    been found at G29-38, the hypothesis was put forward that a dust cloud around the white dwarf causesSpectral modeling of gaseous metal disks around DAZ white dwarfs Klaus Werner, Thorsten Nagel for the first non-LTE modeling of gaseous metal disks around single DAZ white dwarfs recently discovered by G

  18. White LED with High Package Extraction Efficiency

    SciTech Connect (OSTI)

    Yi Zheng; Matthew Stough

    2008-09-30T23:59:59.000Z

    The goal of this project is to develop a high efficiency phosphor converting (white) Light Emitting Diode (pcLED) 1-Watt package through an increase in package extraction efficiency. A transparent/translucent monolithic phosphor is proposed to replace the powdered phosphor to reduce the scattering caused by phosphor particles. Additionally, a multi-layer thin film selectively reflecting filter is proposed between blue LED die and phosphor layer to recover inward yellow emission. At the end of the project we expect to recycle approximately 50% of the unrecovered backward light in current package construction, and develop a pcLED device with 80 lm/W{sub e} using our technology improvements and commercially available chip/package source. The success of the project will benefit luminous efficacy of white LEDs by increasing package extraction efficiency. In most phosphor-converting white LEDs, the white color is obtained by combining a blue LED die (or chip) with a powdered phosphor layer. The phosphor partially absorbs the blue light from the LED die and converts it into a broad green-yellow emission. The mixture of the transmitted blue light and green-yellow light emerging gives white light. There are two major drawbacks for current pcLEDs in terms of package extraction efficiency. The first is light scattering caused by phosphor particles. When the blue photons from the chip strike the phosphor particles, some blue light will be scattered by phosphor particles. Converted yellow emission photons are also scattered. A portion of scattered light is in the backward direction toward the die. The amount of this backward light varies and depends in part on the particle size of phosphors. The other drawback is that yellow emission from phosphor powders is isotropic. Although some backward light can be recovered by the reflector in current LED packages, there is still a portion of backward light that will be absorbed inside the package and further converted to heat. Heat generated in the package may cause a deterioration of encapsulant materials, affecting the performance of both the LED die and phosphor, leading to a decrease in the luminous efficacy over lifetime. Recent studies from research groups at Rensselaer Polytechnic Institute found that, under the condition to obtain a white light, about 40% of the light is transmitted outward of the phosphor layer and 60% of the light is reflected inward.1,2 It is claimed that using scattered photon extraction (SPE) technique, luminous efficacy is increased by 60%. In this project, a transparent/translucent monolithic phosphor was used to replace the powdered phosphor layer. In the normal pcLED package, the powdered phosphor is mixed with silicone either to be deposited on the top of LED die forming a chip level conversion (CLC) white LED or to be casted in the package forming a volume conversion white LED. In the monolithic phosphors there are no phosphor powder/silicone interfaces so it can reduce the light scattering caused by phosphor particles. Additionally, a multi-layer thin film selectively reflecting filter is inserted in the white LED package between the blue LED die and phosphor layer. It will selectively transmit the blue light from the LED die and reflect the phosphor's yellow inward emission outward. The two technologies try to recover backward light to the outward direction in the pcLED package thereby improving the package extraction efficiency.

  19. A preliminary study of population dynamics of cotton rats (Sigmodon hispidus) related to effects of malathion in a Texas coastal marsh

    E-Print Network [OSTI]

    Jurries, Royce Wayne

    1970-01-01T23:59:59.000Z

    A PRELIMINARY STUDY OF POPULATION DYNAMICS tlF CCTTCE EAT'S (~EA d ~hd 'd EELA'TEll TC EFFECTS OF MALATHION IH A TEXAS COASTAL MARSH A Thesis by ROYCE WAYNE JURRIES Submitted to the Graduate College of Texas ASM University in partial... by ROYCE WAYNE JURRIES Approved as to style and content by: airman of Comm t e) (Member) Iced of Department) (Member) ember) JANUARY 1970 9M866 ABSTRACT A Preliminary Study of Population Dynamics fhtt Rt (Rdd ~htd Rl dREE t of Malathion in a Texas...

  20. The hydraulic jump as a white hole

    E-Print Network [OSTI]

    G. E. Volovik

    2005-10-21T23:59:59.000Z

    In the geometry of the circular hydraulic jump, the velocity of the liquid in the interior region exceeds the speed of capillary-gravity waves (ripplons), whose spectrum is `relativistic' in the shallow water limit. The velocity flow is radial and outward, and thus the relativistic ripplons cannot propagating into the interior region. In terms of the effective 2+1 dimensional Painleve-Gullstrand metric appropriate for the propagating ripplons, the interior region imitates the white hole. The hydraulic jump represents the physical singularity at the white-hole horizon. The instability of the vacuum in the ergoregion inside the circular hydraulic jump and its observation in recent experiments on superfluid 4He by E. Rolley, C. Guthmann, M.S. Pettersen and C. Chevallier in physics/0508200 are discussed.

  1. 130 LPW 1000 Lm Warm White LED for Illumination

    SciTech Connect (OSTI)

    Soer, Wouter

    2012-06-14T23:59:59.000Z

    An illumination-grade warm-white LED, having correlated color temperature (CCT) between 2700 and 3500 K and capable of producing 1000 lm output at over 130 lm/W at room temperature, has been developed in this program. The high-power warm-white LED is an ideal source for use in indoor and outdoor lighting applications. Over the two year period, we have made the following accomplishments: • Developed a low-cost high-power white LED package and commercialized a series of products with CCT ranging from 2700 to 5700 K under the product name LUXEON M; • Demonstrated a record efficacy of 124.8 lm/W at a flux of 1023 lm, CCT of 3435 K and color rendering index (CRI) over 80 at room temperature in the productized package; • Demonstrated a record efficacy of 133.1 lm/W at a flux of 1015 lm, CCT of 3475 K and CRI over 80 at room temperature in an R&D package. The new high-power LED package is a die-on-ceramic surface mountable LED package. It has four 2 mm2 InGaN pump dice, flip-chip attached to a ceramic submount in a 2x2 array configuration. The submount design utilizes a design approach that combines a high-thermal- conductivity ceramic core for die attach and a low-cost and low-thermal-conductivity ceramic frame for mechanical support and as optical lens carrier. The LED package has a thermal resistance of less than 1.25 K/W. The white LED fabrication also adopts a new batch level (instead of die-by-die) phosphor deposition process with precision layer thickness and composition control, which provides not only tight color control, but also low cost. The efficacy performance goal was achieved through the progress in following key areas: (1) high-efficiency royal blue pump LED development through active region design and epitaxial growth quality improvement (funded by internal programs); (2) improvement in extraction efficiency from the LED package through improvement of InGaN-die-level and package-level optical extraction efficiency; and (3) improvement in phosphor system efficiency by improving the lumen equivalent (LE) and phosphor package efficiency (PPE) through improvement in phosphor-package interactions. The high-power warm-white LED product developed has been proven to have good reliability through extensive reliability tests. The new kilo-lumen package has been commercialized under the product name LUXEON M. As of the end of the program, the LUXEON M product has been released in the following CCT/CRI combinations: 3000K/70, 4000K/70, 5000K/70, 5700K/70, 2700K/80, 3000K/80 and 4000K/80. LM-80 tests for the products with CCTs of 4000 K and higher have reached 8500 hours, and per IESNA TM-21-11 have established an L70 lumen maintenance value of >51,000 hours at A drive current and up to 120 °C board temperature.

  2. Low Voltage White Phosphorescent OLED Achievements

    Broader source: Energy.gov [DOE]

    Universal Display Corporation (UDC) and its research partners at Princeton University and the University of Southern California have succeeded in developing a white phosphorescent OLED (PHOLED™) that achieved a record efficiency of 20 lumens per watt. This achievement is the result of the team's collaborative efforts to increase the efficiency of PHOLED lighting by focusing on two critical factors: lowering the drive voltages and increasing the amount of light extracted.

  3. HTGR Mechanistic Source Terms White Paper

    SciTech Connect (OSTI)

    Wayne Moe

    2010-07-01T23:59:59.000Z

    The primary purposes of this white paper are: (1) to describe the proposed approach for developing event specific mechanistic source terms for HTGR design and licensing, (2) to describe the technology development programs required to validate the design methods used to predict these mechanistic source terms and (3) to obtain agreement from the NRC that, subject to appropriate validation through the technology development program, the approach for developing event specific mechanistic source terms is acceptable

  4. Discovery of a peculiar DQ white dwarf

    E-Print Network [OSTI]

    D. Carollo; S. T. Hodgkin; A. Spagna; R. L. Smart; M. G. Lattanzi; B. J. McLean; D. J. Pinfield

    2002-08-27T23:59:59.000Z

    We report the discovery of a new carbon rich white dwarf that was identified during a proper motion survey for cool white dwarfs based on photographic material used for the construction of the Guide Star Catalog II. Its large proper motion (0.48 arcsec/yr) and faint apparent magnitude (V = 18.7) suggest a nearby object of low luminosity. A low-resolution spectrum taken with the William Herschel Telescope clearly shows strong C2 Deslandres-d'Azambuja and Swan bands, which identify the star as a DQ white dwarf. The strength of the Deslandres-d'Azambuja bands and the depression of the continuum in the Swan-band region are signs of enhanced carbon abundance for the given Teff. Comparison of our spectrophotometric data to published synthetic spectra suggests 6000 K < Teff < 8000 K although further analysis with specialized synthetic models appear necessary to derive both Teff and chemical composition. Finally, the range of spatial velocity estimated for this object makes it a likely member of the halo or thick disk population.

  5. Cooling Models for Old White Dwarfs

    E-Print Network [OSTI]

    Brad M. S. Hansen

    1999-03-02T23:59:59.000Z

    We present new white dwarf cooling models which incorporate an accurate outer boundary condition based on new opacity and detailed radiative transfer calculations. We find that helium atmosphere dwarfs cool considerably faster than has previously been claimed, while old hydrogen atmosphere dwarfs will deviate significantly from black body appearance. We use our new models to derive age limits for the Galactic disk. We find that the Liebert, Dahn & Monet (1988) luminosity function yields an age of only 6 Gyr if it is complete to stated limits. However, age estimates of individual dwarfs and the luminosity function of Oswalt et al (1995) are both consistent with disk ages as large as \\sim 11 Gyr. We have also used our models to place constraints on white dwarf dark matter in Galactic halos. We find that previous attempts using inadequate cooling models were too severe and that direct detection limits allow a halo that is 11 Gyr old. If the halo is composed solely of helium atmosphere dwarfs, the lower age limit is only 7.5 Gyr. We also demonstrate the importance of studying the cooling sequences of white dwarfs in Globular clusters.

  6. Application APPLICATION

    E-Print Network [OSTI]

    Papautsky, Ian

    in the CCM Bulletin which can be downloaded from ccm.uc.edu/admissions/ application. You will automatically be considered for a talent-based scholarship when you audition/ interview for entrance into CCM. These awards would also like to invite you to tour CCM's excellent facilities and observe some classes and ensemble

  7. Thompson, R. L., B. T. Smith, A. R. Dean, and P. T. Marsh, 2014: Spatial distributions of tornadic near-storm environments by convective mode. Electronic J. Severe Storms Meteor., 8 (5), 122.

    E-Print Network [OSTI]

    . SMITH, AND ANDREW R. DEAN NOAA/NWS/NCEP Storm Prediction Center, Norman, Oklahoma PATRICK T. MARSH* University of Oklahoma, Norman, Oklahoma (Submitted 19 February 2013; in final form 08 September 2013: NOAA/NWS/NCEP Storm Prediction Center, Norman, Oklahoma. ____________________ Corresponding author

  8. Search for Higgs shifts in white dwarfs

    E-Print Network [OSTI]

    Roberto Onofrio; Gary A. Wegner

    2014-09-30T23:59:59.000Z

    We report on a search for differential shifts between electronic and vibronic transitions in carbon-rich white dwarfs BPM 27606 and Procyon B. The absence of differential shifts within the spectral resolution and taking into account systematic effects such as space motion and pressure shifts allows us to set the first upper bound of astrophysical origin on the coupling between the Higgs field and the Kreschmann curvature invariant. Our analysis provides the basis for a more general methodology to derive bounds to the coupling of long-range scalar fields to curvature invariants in an astrophysical setting complementary to the ones available from high-energy physics or table-top experiments.

  9. White Mountains Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere IRaghuraji Agro IndustriesTown ofNationwideWTEDBird, Idaho: Energy Resources JumpMeadow Lake, NewWhite

  10. White Oak Builders | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere IRaghuraji Agro IndustriesTown ofNationwideWTEDBird, Idaho: Energy Resources JumpMeadow Lake, NewWhiteBuilders

  11. Whiting, Vermont: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere IRaghuraji Agro IndustriesTown ofNationwideWTEDBird, Idaho: Energy ResourcesOhio:Whitestown,Whiting, Vermont:

  12. Sandia Energy - White Light Creation Architectures

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

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

  13. White LED with High Package Extraction Efficiency

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOnItem Not Found Item Not Found The item youTheWSRC-TR-97-0100WHITE LED WITH HIGH PACKAGE

  14. Technical White Papers | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onYouTube YouTube Note: Since the.pdfBreakingMayDepartment ofEnergyTeam CumberlandFebruary 2010Rulemaking |White

  15. White Energy Ltd | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualProperty Edit withTianlin BaxinUmweltVillageGraphWellton-MohawkWesternwishWhirlpoolWhite

  16. White House | OpenEI Community

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualProperty Edit withTianlin BaxinUmweltVillageGraphWellton-MohawkWesternwishWhirlpoolWhiteHouse

  17. New Efficiency Record Achieved for White OLED Device

    Broader source: Energy.gov [DOE]

    Osram Opto-Semiconductors, Inc. has successfully demonstrated a white organic light emitting diode (OLED) with a record efficiency of 25 lumens per watt, the highest known efficiency achieved to date for a polymer-based white OLED. The 25 LPW cool-white-emitting device was produced by applying a standard external inorganic phosphor to Osram's record-breaking blue-emitting phosphorescent polymer device with a peak luminous efficacy of 14 LPW.

  18. Recent Developments in Quantum White Noise Calculus: Quantum White Noise Derivatives and Implementation Problem

    E-Print Network [OSTI]

    Obata, Nobuaki

    ) is defined by . . (H) = { = (fn) ; fn Hn , 2 = n=0 n!|fn|2 0 ) ), respectively. (The pair {at, a t ; t T } is called the quantum white noise on T .) Definition Given l,m (E(l+m,m (E(l+m) ) , where the right-hand side converges

  19. Application ApplicAtion

    E-Print Network [OSTI]

    Papautsky, Ian

    in the CCM Bulletin which can be downloaded from http://ccm.uc.edu/ admissions/application.html. You will automatically be considered for a talent-based scholarship when you audition/ interview for entrance into CCM is made. We would also like to invite you to tour CCM's excellent facilities and observe some classes

  20. 2012 White Book, Pacific Northwest Loads and Resources Study

    SciTech Connect (OSTI)

    None

    2013-06-06T23:59:59.000Z

    The White Book is a planning analysis produced by BPA that informs BPA of its load and resource conditions for sales and purchases. The White Book provides a 10-year look at the expected obligations and resources in the Federal system and PNW region. The White Book is used as a planning tool for the Columbia River Treaty (Treaty) studies, as an information tool for customers and regional interests, and as a publication of information utilized by other planning entities for their analyses. The White Book is not used to guide day-to-day operations of the Federal Columbia River Power System (FCRPS) or determine BPA revenues or rates.

  1. Food and Drug Administration White Oak Campus Environmental Stewardshi...

    Office of Environmental Management (EM)

    Stewardship and Cost Savings FEMP ESPC Success Story on water conservation and green energy at the Food and Drug Administration (FDA) White Oak Campus....

  2. 21st Century Truck Partnership - Roadmap and Technical White...

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

    Appendix containing supporting information to the 21st Century Partnership's Roadmap and Technical White Papers (21CTP-003). 21ctproadmapappendix2007.pdf More Documents &...

  3. White Creek and Nine Canyon wind farms Fact Sheet

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

    additional wind storage and shaping services. Since these White Creek and Nine Canyon wind farms December 2006 2 Bonne ville Power Administration DOEBP-3770 November 2006...

  4. ancli white papers: Topics by E-print Network

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

    the interior Simitev, Radostin D 120 Computational Modeling and the Experimental Plasma Research Program A White Paper Submitted to the FESAC Subcommittee Plasma Physics and...

  5. The White House's Week of Making | Department of Energy

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

    as advanced manufacturing and technology. Last year, the Energy Department's Albert Einstein Teaching Fellowship responded to the White House's Maker call to action by announcing...

  6. White House Announces New Executive Order To Reduce Greenhouse...

    Office of Environmental Management (EM)

    the next decade (from 2008 levels) and increase the share of electricity the federal government consumes from renewable sources to 30%. According to the White House, the...

  7. White House Council of Economic Advisers and Energy Department...

    Office of Environmental Management (EM)

    House Council of Economic Advisers and Energy Department Release New Report on Resiliency of Electric Grid During Natural Disasters White House Council of Economic Advisers and...

  8. ESPC Success Story - Food and Drug Administration (FDA) White...

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

    (FDA) White Oak Campus espcsswhiteoak.pdf More Documents & Publications Energy Savings Performance Contract Success Stories ESPC Sucess Story - Harold Washington...

  9. Investigations of Bearing Failures Associated with White Etching...

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

    of Bearing Failures Associated with White Etching Areas (irWEAs) in Wind Turbine Gearboxes Presented by Bob Errichello of GEARTECH at the Wind Turbine Tribology...

  10. Energy Supplier Obligations and White Certificate Schemes: Comparative...

    Open Energy Info (EERE)

    Results in the European Union Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Energy Supplier Obligations and White Certificate Schemes: Comparative Analysis of Results...

  11. Cooking Up New Nanoribbons to Make Better White LEDs | Advanced...

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

    appealing white phosphors based on LEDs. The materials combine the rare-earth element europium with aluminum oxide to form europium aluminate nanoribbons. Powders of europium oxide...

  12. Theory of Neutrinos: a White Paper

    SciTech Connect (OSTI)

    Mohapatra, R.N.; Antusch, S.; Babu, K.S.; Barenboim, G.; Chen, Mu-Chun; Davidson, S.; de Gouvea, A.; de Holanda, P.; Dutta, Bhaskar; Grossman, Y.; Joshipura, A.; Kayser,; Kersten, J.; Keum, Y.Y.; King, S.F.; Langacker, P.; Lindner, M.; Loinaz, W.; Masina, I.; Mocioiu, I.; Mohanty, S.; /Maryland U. /Madrid, Autonoma U. /Southampton U. /Oklahoma

    2006-01-11T23:59:59.000Z

    During 2004, four divisions of the American Physical Society commissioned a study of neutrino physics to take stock of where the field is at the moment and where it is going in the near and far future. Several working groups looked at various aspects of this vast field. The summary was published as a main report entitled ''The Neutrino Matrix'' accompanied by short 50 page versions of the report of each working group. Theoretical research in this field has been quite extensive and touches many areas and the short 50 page report [1] provided only a brief summary and overview of few of the important points. The theory discussion group felt that it may be of value to the community to publish the entire study as a white paper and the result is the current article. After a brief overview of the present knowledge of neutrino masses and mixing and some popular ways to probe the new physics implied by recent data, the white paper summarizes what can be learned about physics beyond the Standard Model from the various proposed neutrino experiments. It also comments on the impact of the experiments on our understanding of the origin of the matter-antimatter asymmetry of the Universe and the basic nature of neutrino interactions as well as the existence of possible additional neutrinos. Extensive references to original literature are provided.

  13. Theory of neutrinos: A White paper

    SciTech Connect (OSTI)

    Mohapatra, R.N.; Antusch, S.; Babu, K.S.; Barenboim, G.; Chen, Mu-Chun; Davidson, S.; de Gouvea, A.; de Holanda, P.; Dutta, Bhaskar; Grossman, Y.; Joshipura, A.; Kayser,; Kersten, J.; Keum, Y.Y.; King, S.F.; Langacker, P.; Lindner, M.; Loinaz, W.; Masina, I.; Mocioiu, I.; Mohanty, S.; /Maryland U. /Madrid, Autonoma U. /Southampton U. /Oklahoma

    2005-10-01T23:59:59.000Z

    During 2004, four divisions of the American Physical Society commissioned a study of neutrino physics to take stock of where the field is at the moment and where it is going in the near and far future. Several working groups looked at various aspects of this vast field. The summary was published as a main report entitled ''The Neutrino Matrix'' accompanied by short 50 page versions of the report of each working group. Theoretical research in this field has been quite extensive and touches many areas and the short 50 page report [1] provided only a brief summary and overview of few of the important points. The theory discussion group felt that it may be of value to the community to publish the entire study as a white paper and the result is the current article. After a brief overview of the present knowledge of neutrino masses and mixing and some popular ways to probe the new physics implied by recent data, the white paper summarizes what can be learned about physics beyond the Standard Model from the various proposed neutrino experiments. It also comments on the impact of the experiments on our understanding of the origin of the matter-antimatter asymmetry of the Universe and the basic nature of neutrino interactions as well as the existence of possible additional neutrinos. Extensive references to original literature are provided.

  14. Theory of Neutrinos: A White Paper

    E-Print Network [OSTI]

    R. N. Mohapatra; S. Antusch; K. S. Babu; G. Barenboim; M. -C. Chen; S. Davidson; A. de Gouvea; P. de Holanda; B. Dutta; Y. Grossman; A. Joshipura; B. Kayser; J. Kersten; Y. Y. Keum; S. F. King; P. Langacker; M. Lindner; W. Loinaz; I. Masina; I. Mocioiu; S. Mohanty; H. Murayama; S. Pascoli; S. T. Petcov; A. Pilaftsis; P. Ramond; M. Ratz; W. Rodejohann; R. Shrock; T. Takeuchi; T. Underwood; L. Wolfenstein

    2005-12-02T23:59:59.000Z

    During 2004, four divisions of the American Physical Society commissioned a study of neutrino physics to take stock of where the field is at the moment and where it is going in the near and far future. Several working groups looked at various aspects of this vast field. The summary was published as a main report entitled ``The Neutrino Matrix'' accompanied by short 50 page versions of the report of each working group. Theoretical research in this field has been quite extensive and touches many areas and the short 50 page report provided only a brief summary and overview of few of the important points. The theory discussion group felt that it may be of value to the community to publish the entire study as a white paper and the result is the current article. After a brief overview of the present knowledge of neutrino masses and mixing and some popular ways to probe the new physics implied by recent data, the white paper summarizes what can be learned about physics beyond the Standard Model from the various proposed neutrino experiments. It also comments on the impact of the experiments on our understanding of the origin of the matter-antimatter asymmetry of the Universe and the basic nature of neutrino interactions as well as the existence of possible additional neutrinos. Extensive references to original literature are provided.

  15. White House Conference on Global Climate Change

    SciTech Connect (OSTI)

    Not Available

    1993-11-01T23:59:59.000Z

    President Clinton has directed the White House office on Environmental Policy to coordinate an interagency process to develop a plan to fulfill the commitment he made in his Earth Day address on April 21, 1993. This plan will become the cornerstone of the Climate Change Plan that will be completed shortly after the Rio Accord enters into force. The Office on Environmental Policy established the Interagency Climate Change Mitigation Group to draw on the expertise of federal agencies including the National Economic Council; the Council of Economic Advisors; the Office of Science and Technology Policy; the Office of Management and Budget; the National Security Council; the Domestic Policy Council; the Environmental Protection Agency; and the Departments of Energy, Transportation, Agriculture, Interior, Treasury, Commerce, and State. Working groups have been established to examine six key policy areas: energy demand, energy supply, joint implementation, methane and other gases, sinks, and transportation. The purpose of the White House Conference on Global Climate Change was to ``tap the real-world experiences`` of diverse participants and seek ideas and information for meeting the President`s goals. During the opening session, senior administration officials defined the challenge ahead and encouraged open and frank conversation about the best possible ways to meet it.

  16. ANAEROBIC RESISTANCE TO HIGH LEVELS OF CADMIUM AND OTHER TOXIC METALS IN A FACULTATIVE ANAEROBE ISOLATED FROM PRISTINE SALT MARSH SEDIMENTS

    SciTech Connect (OSTI)

    SHARMA,P.K.; VAIRAVAMURTHY,A.; KIELECZAWA,J.

    1999-06-20T23:59:59.000Z

    The authors have isolated many Cd (II) resistant bacterial strains from relatively pristine sediments collected from salt marshes in Shelter Island, New York. Detailed studies are being performed on one isolate, strain Cd-1. Strain Cd-1 is metabolically diverse, halotolerant, Gram-negative, facultative anaerobe. It can resist high amounts of Cd (II), Cr (VI), As (V), Se (IV), Co (II), Pb (II), or Zn (II) under defined anaerobic conditions. With pyruvate as the energy source, Cd-1 can grow well at examined Cd (II) concentrations ranging up to 15 mM. It can resist Cd (II) with or without marine level NaCl concentration, under acidic or neutral conditions. It can resist Cd (II) under aerobic conditions as well. These features are novel for a heavy metal resistant bacterium.

  17. 2013 White Book, Pacific Northwest Loads and Resources Study (summary)

    SciTech Connect (OSTI)

    None

    2013-10-01T23:59:59.000Z

    The 2013 Pacific Northwest Loads and Resources Study (2013 White Book) is BPA's latest projection of the Pacific Northwest regional retail loads, contract obligations, contract purchases, and resource capabilities. The 2013 White Book is a snapshot of conditions as of October 1, 2013, documenting the loads and resources for the Federal system and region for the 10-year study period OY 2014 through 2023. The White Book contains projections of regional and Federal system load and resource capabilities, along with relevant definitions and explanations. The White Book also contains information obtained from formalized resource planning reports and data submittals including those from individual utilities, the Northwest Power and Conservation Council (Council), and the Pacific Northwest Utilities Conference Committee (PNUCC). Starting with the 2012 White Book, BPA changed the annual production schedule for future White Books. BPA is scheduled to publish a complete White Book, which includes a Federal System Needs Assessment analysis, every other year (even years). In the odd-numbered years, BPA will publish a biennial summary update (Supplement) that only contains major changes to the Federal System and Regional System analyses that have occurred since the last White Book. http://www.bpa.gov/power/pgp/whitebook/2013/index.shtml.

  18. Chaos expansion of heat equations with white noise potentials

    E-Print Network [OSTI]

    Hu, Yaozhong

    2002-02-01T23:59:59.000Z

    The asymptotic behavior as t --> infinity of the solution to the following stochastic heat equations [GRAPHICS] is investigated, where w is a space-time white noise or a space white noise. The use of lozenge means that the stochastic integral of 10...

  19. Short Communication Cytogenetics of Hispanic and White Children with Acute

    E-Print Network [OSTI]

    California at Berkeley, University of

    Short Communication Cytogenetics of Hispanic and White Children with Acute Lymphoblastic Leukemia Hispanics and non-Hispanic Whites. Among B-lineage acute lymphoblastic leukemia patients, the percentage, interestingly, Hispanics are reported to have a higher incidence of acute lymphoblastic leukemia (ALL) than non

  20. WHITING SCHOOL OF ENGINEERING Rising to the Challenge

    E-Print Network [OSTI]

    Ghosh, Somnath

    to knowledge, engineering human health, and improving global well-being and security. To support1 2 WHITING SCHOOL OF ENGINEERING Rising to the Challenge: The Campaign for Johns Hopkins Whiting School of Engineering Wyman Park Building, Suite 400 3400 North Charles Street Baltimore, Maryland 21218

  1. Original article Effects of tropospheric ozone on white clover plants

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Original article Effects of tropospheric ozone on white clover plants exposed in open-top chambers concentration in a large part of Europe is high enough to cause visible injury to sensitive plants and several site are evaluated using white clover plants. Plants were exposed to the air and sprayed with water

  2. EARLY LIFE HISTORY OF WHITE BASS IN LAKE POINSETT

    E-Print Network [OSTI]

    SOUTH DAKOTA a1/-F c ) o o ~ 0 EARLY LIFE HISTORY OF WHITE BASS IN LAKE POINSETT South Dakota Department of Game, Fish and Parks Wildlife Division Joe Foss Building Pierre, South Dakota 57501 OF WHITE BASS IN LAKE POINSETT 1999 Statewide Fisheries Investigations Completion Report by H. Denise Beck

  3. Hillenbrand, Slesnick & White. Spitzer Cycle 1 Proposal 1 Scientific Justification

    E-Print Network [OSTI]

    Hillenbrand, Lynne

    Hillenbrand, Slesnick & White. Spitzer Cycle 1 Proposal 1 Scientific Justification Young Brown (cloud-core fragmentation, collapse, and subsequent accretion of material onto a hydrostatic core). Most accretion (e.g. White & Basri 2003; Muzerolle et al. 2003) onto proto-brown dwarf photospheres which occurs

  4. www.nasa.gov WHITE SANDS MISSILE RANGE ACCESS CAPABILITIES

    E-Print Network [OSTI]

    and missile launch, tracking, and recovery · Nuclear effects testing · High-speed sled track · Directed energy weapons testing · Climatic and dynamic environments testing · Atmospheric research · Electronicwww.nasa.gov WHITE SANDS MISSILE RANGE ACCESS CAPABILITIES SUMMARY White Sands Test Facility (WSTF

  5. a microsoft white paper Drilling for new Business Value

    E-Print Network [OSTI]

    Bernstein, Phil

    a microsoft white paper Drilling for new Business Value How innovative oil and gas companies Perez, Enterprise Architect, Microsoft #12;a microsoft white paper Drilling for new B usiness Value 2 for new B usiness Value 3 executive summary as the buzz about big data makes the leap from technology

  6. think.change.do White (UTS-logo-Title-Negative)

    E-Print Network [OSTI]

    University of Technology, Sydney

    2 think.change.do White (UTS-logo-Title-Negative) colour (UTS-logo-Title-321) Black (UTS-logo-NoTitle-Black) White (UTS-logo-NoTitle-Negative) colour (UTS-logo-NoTitle-321) UtS acronym with colon The UTS acronym

  7. The Spanish Square Kilometre Array White Book

    E-Print Network [OSTI]

    Pulido, J A Acosta; Alberdi, A; Alcolea, J; Alfaro, E J; Alonso-Herrero, A; Anglada, G; Arnalte-Mur, P; Ascasibar, Y; Ascaso, B; Azulay, R; Bachiller, R; Baez-Rubio, A; Battaner, E; Blasco, J; Brook, C B; Bujarrabal, V; Busquet, G; Caballero-Garcia, M D; Carrasco-Gonzalez, C; Casares, J; Castro-Tirado, A J; Colina, L; Colomer, F; de Gregorio-Monsalvo, I; del Olmo, A; Desmurs, J-F; Diego, J M; Dominguez-Tenreiro, R; Estalella, R; Fernandez-Soto, A; Florido, E; Font, J; Font, J A; Fuente, A; Garcia-Burillo, S; Garcia-Benito, R; Garcia-Lorenzo, B; de Paz, A Gil; Girart, J M; Goicoechea, J R; Gomez, J F; Gonzalez-Garcia, M; Gonzalez-Martin, O; Gonzalez-Serrano, J I; Gorgas, J; Gorosabel, J; Guijarro, A; Guirado, J C; Hernandez-Garcia, L; Hernandez-Monteagudo, C; Herranz, D; Herrero-Illana, R; Hu, Y-D; Huelamo, N; Huertas-Company, M; Iglesias-Paramo, J; Jeong, S; Jimenez-Serra, I; Knapen, J H; Lineros, R A; Lisenfeld, U; Marcaide, J M; Marquez, I; Marti, J; Marti, J M; Martinez-Gonzalez, E; Martin-Pintado, J; Marti-Vidal, I; Masegosa, J; Mayen-Gijon, J M; Mezcua, M; Mimica, S/ Migliari P; Moldon, J; Morata, O; Negueruela, I; Oates, S R; Osorio, M; Palau, A; Paredes, J M; Perea, J; Perez-Gonzalez, P G; Perez-Montero, E; Perez-Torres, M A; Perucho, M; Planelles, S; Pons, J A; Prieto, A; Quilis, V; Ramirez-Moreta, P; Almeida, C Ramos; Rea, N; Ribo, M; Rioja, M J; Espinosa, J M Rodriguez; Ros, E; Rubiño-Martin, J A; Ruiz-Granados, B; Sabater, J; Sanchez, M A P; Usero, A; Verdes-Montenegro, L; Vidal-Garcia, A; Vielva, P; Vilchez, J; Zhang, B-B

    2015-01-01T23:59:59.000Z

    The Square Kilometre Array (SKA) is called to revolutionise essentially all areas of Astrophysics. With a collecting area of about a square kilometre, the SKA will be a transformational instrument, and its scientific potential will go beyond the interests of astronomers. Its technological challenges and huge cost requires a multinational effort, and Europe has recognised this by putting the SKA on the roadmap of the European Strategy Forum for Research Infrastructures (ESFRI). The Spanish SKA White Book is the result of the coordinated effort of 119 astronomers from 40 different research centers. The book shows the enormous scientific interest of the Spanish astronomical community in the SKA and warrants an optimum scientific exploitation of the SKA by Spanish researchers, if Spain enters the SKA project.

  8. Heat Equations with Fractional White Noise Potentials

    SciTech Connect (OSTI)

    Hu, Y. [Department of Mathematics, University of Kansas, 405 Snow Hall, Lawrence, KS 66045-2142 (United States)], E-mail: hu@math.ukans.edu

    2001-07-01T23:59:59.000Z

    This paper is concerned with the following stochastic heat equations: ({partial_derivative}u{sub t}(x))/({partial_derivative}t=1/2 u{sub t}(x)+{omega}{sup H}.u{sub t}(x)), x element of {sup d}, t>0, where w{sup H} is a time independent fractional white noise with Hurst parameter H=(h{sub 1}, h{sub 2},..., h{sub d}) , or a time dependent fractional white noise with Hurst parameter H=(h{sub 0}, h{sub 1},..., h{sub d}) . Denote | H | =h{sub 1}+h{sub 2}+...+h{sub d} . When the noise is time independent, it is shown that if 1/2 d-1 , then the solution is in L{sub 2} and the L{sub 2} -Lyapunov exponent of the solution is estimated. When the noise is time dependent, it is shown that if 1/2 d- 2 /( 2h{sub 0}-1 ) , the solution is in L{sub 2} and the L{sub 2} -Lyapunov exponent of the solution is also estimated. A family of distribution spaces S{sub {rho}} , {rho} element of RR , is introduced so that every chaos of an element in S{sub {rho}} is in L{sub 2} . The Lyapunov exponents in S{sub {rho}} of the solution are also estimated.

  9. Microsoft PowerPoint - 12 Holman White PM Conference 2010 Rev...

    Office of Environmental Management (EM)

    PowerPoint - 12 Holman White PM Conference 2010 Rev 2 revised Microsoft PowerPoint - 12 Holman White PM Conference 2010 Rev 2 revised Microsoft PowerPoint - 12 Holman White PM...

  10. Sandia National Laboratories: warm white LED

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

    Unfortunately, red emitters that satisfy all criteria for use in solid-state lighting (SSL) applications are ... Last Updated: May 23, 2013 Go To Top Exceptional service in...

  11. Traffic Light Protocol: WHITE Traffic Light Protocol: WHITE (information may be distributed without restriction, subject to copyright controls.)

    E-Print Network [OSTI]

    Thomas, Andrew

    the event for their gain. The Threats: Internet watch groups and cyber security experts have already potential cyber threats please visit the Center for Internet Security website at CISecurity.org. #12;Traffic Light Protocol: WHITE Traffic Light Protocol: WHITE (information may be distributed without

  12. Larviculture of native white shrimp, Penaeus setiferus, and exotic white shrimp, P. vannanmei at Continental Fisheries, Limited, Panama City, Florida

    E-Print Network [OSTI]

    Aranyakananda, Porcham

    1985-01-01T23:59:59.000Z

    LARVICULTURE OF NATIVE WHITE SHRIMP, Penaeus setiferus, AND EXOTIC WHITE SHRIMP, P. vannamei, AT CONTINENTAL FISHERIES. LIMITED. PANAMA CITY, FLORIDA Internship Report by PORCHAM ARANYAKANANDA Submitted to the Department of Wildlife..., AT CONTINENTAL FISHERIES, LIMITED, PANAMA CITY, FLORIDA Internship Report by PORCHAM ARANYAKANANDA Approved as to style and content by ( Chairman of Committee ) ( Member ) ( Member ) ABSTRACT Larviculture of native wnite snrimp, penaeus setiferus...

  13. ScienceEducation.gov Featured on the new White House Innovation...

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

    Office of Public Affairs The White House recently posted ScienceEducation.gov (beta version) to its Innovations Gallery - a part of the White House Open Government...

  14. Dr. Elizabeth Sherwood-Randall, a Top White House National Security...

    Energy Savers [EERE]

    Elizabeth Sherwood-Randall, a Top White House National Security Council Official, Confirmed as Deputy Secretary of Department of Energy Dr. Elizabeth Sherwood-Randall, a Top White...

  15. Responding to the Risk of White Shark Attack Updated Statistics, Prevention, Control

    E-Print Network [OSTI]

    Klimley, A. Peter

    477 CHAPTER 31 Responding to the Risk of White Shark Attack Updated Statistics, Prevention, Control ................................................................................................................................... 478 White Shark Attack Statistics........................................................................................................ 479 Definition of Shark Attack

  16. White Kids: Identity Construction, Critical Mass, and Symbolic Exclusion in High School Cliques and other Groups

    E-Print Network [OSTI]

    Lueck, Kerstin; Steffen, Hayley

    2011-01-01T23:59:59.000Z

    M. (1997). The social construction of Whiteness. In R.bre White Kids: Identity Construction, Critical Mass, andKeywords: Identity Construction, Symbolic Exclusion,

  17. age-related white matter: Topics by E-print Network

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

    According to this hypothesis, ... Tsenkina, Yanina 2013-07-06 4 Is Galactic Dark Matter White ? Astrophysics (arXiv) Summary: We calculate the expected white dwarf luminosity...

  18. The Revival of White Holes as Small Bangs

    E-Print Network [OSTI]

    Alon Retter; Shlomo Heller

    2011-07-17T23:59:59.000Z

    Black holes are extremely dense and compact objects from which light cannot escape. There is an overall consensus that black holes exist and many astronomical objects are identified with black holes. White holes were understood as the exact time reversal of black holes, therefore they should continuously throw away material. It is accepted, however, that a persistent ejection of mass leads to gravitational pressure, the formation of a black hole and thus to the "death of while holes". So far, no astronomical source has been successfully tagged a white hole. The only known white hole is the Big Bang which was instantaneous rather than continuous or long-lasting. We thus suggest that the emergence of a white hole, which we name a 'Small Bang', is spontaneous - all the matter is ejected at a single pulse. Unlike black holes, white holes cannot be continuously observed rather their effect can only be detected around the event itself. Gamma ray bursts are the most energetic explosions in the universe. Long gamma-ray bursts were connected with supernova eruptions. There is a new group of gamma-ray bursts, which are relatively close to Earth, but surprisingly lack any supernova emission. We propose identifying these bursts with white holes. White holes seem like the best explanation of gamma-ray bursts that appear in voids. We also predict the detection of rare gigantic gamma-ray bursts with energies much higher than typically observed.

  19. A Very Low-Luminosity, Very Cool, DC White Dwarf

    E-Print Network [OSTI]

    Hugh Harris; Conard Dahn; Frederick Vrba; Arne Henden; James Liebert; Gary Schmidt; Neill Reid

    1999-06-03T23:59:59.000Z

    The star LHS 3250 is found to be a white dwarf at a distance of 30 pc. Its absolute magnitudes (M_V = 15.72; M_bol = 16.2) put it among the least-luminous white dwarfs known. Its optical spectrum shows no features, indicating it has a DC classification, and it shows no detectable polarization, indicating it does not have a very strong magnetic field. However, its broadband colors show it to have a unique spectral energy distribution, and it stands out from all other stars in BVI and other broadband photometric surveys. We discuss these properties, and conclude that LHS 3250 must be an extremely cool white dwarf with strong collision-induced absorption at red-infrared wavelengths from molecular hydrogen, in accord with models for very cool white dwarf atmospheres. If so, it is the first such star known, and the first star to provide observational evidence supporting these models. It suggests that other very cool white dwarfs, both halo white dwarfs and the oldest disk white dwarfs, also may have colors affected by similar absorption. The atmospheric composition of LHS 3250 is not known, and therefore its temperature is poorly determined. It may be a helium-core star with a mass 0.3-0.45 M_solar and a product of mass-transfer in a close binary system. However, until its temperature is better known, its mass and age remain uncertain.

  20. Near-Infrared Photometric Analyses of White Dwarf Stars

    E-Print Network [OSTI]

    P. -E. Tremblay; P. Bergeron

    2006-11-29T23:59:59.000Z

    We review the available near- and mid- infrared photometry data sets for white dwarfs from the Two Micron All-Sky Survey (2MASS) Point Source Catalog and the Spitzer Space Telescope. These data sets have been widely used to search for white dwarfs with an infrared excess as well as to characterize the atmosphere of cool white dwarfs. We evaluate the reliability of the 2MASS photometry by performing a statistical comparison with published JHK CIT magnitudes, and by carrying out a detailed model atmosphere analysis of the available photometry. We then present a critical examination of various results published in the literature including data from the Spitzer Space Telescope.

  1. The Torino Observatory Parallax Program: White Dwarf Candidates

    E-Print Network [OSTI]

    R. L. Smart; M. G. Lattanzi; B. Bucciarelli; G. Massone; R. Casalegno; G. Chiumiento; R. Drimmel; L. Lanteri; F. Marocco; A. Spagna

    2003-03-24T23:59:59.000Z

    We present parallax determinations for six white dwarf candidates in the Torino Observatory Parallax Program. The absolute parallaxes are found with precisions at the 2-3 milliarcsecond level. For WD 1126+185 we find a distance incompatible with being a white dwarf, implying an incorrect classification. For WD 2216+484 we find our distance is consistent with a simple DA white dwarf rather than a composite system as previously proposed in the literature. In general it is found that the published photometric distance is an overestimate of the distance found here.

  2. July 2014, IDC #250102 WHITE PAPER

    E-Print Network [OSTI]

    Fisher, Kathleen

    (capex) as well as operational expenses (opex). Many organizations are turning to third parties of using a third-party services firm for hosted application management include shifting costs from capex

  3. April 2014, IDC #248175 WHITE PAPER

    E-Print Network [OSTI]

    Fisher, Kathleen

    10 20 30 40 50 Other, please specify Restructure the IT financial footprint/ shift capex to opex applications or Web-based business models pan out. Cloud computing provides a low-risk, capex-lite platform

  4. White dwarf masses in cataclysmic variables

    E-Print Network [OSTI]

    Wijnen, T P G; Schreiber, M R

    2015-01-01T23:59:59.000Z

    The white dwarf (WD) mass distribution of cataclysmic variables (CVs) has recently been found to dramatically disagree with the predictions of the standard CV formation model. The high mean WD mass among CVs is not imprinted in the currently observed sample of CV progenitors and cannot be attributed to selection effects. Two possibilities have been put forward: either the WD grows in mass during CV evolution, or in a significant fraction of cases, CV formation is preceded by a (short) phase of thermal time-scale mass transfer (TTMT) in which the WD gains a sufficient amount of mass. We investigate if either of these two scenarios can bring theoretical predictions and observations into agreement. We employed binary population synthesis models to simulate the present intrinsic CV population. We incorporated aspects specific to CV evolution such as an appropriate mass-radius relation of the donor star and a more detailed prescription for the critical mass ratio for dynamically unstable mass transfer. We also imp...

  5. The Binary White Dwarf LHS 3236

    E-Print Network [OSTI]

    Harris, Hugh; Dupuy, Trent; Canzian, Blaise; Guetter, Harry; Hartkopf, William; Ireland, Michael; Leggett, Sandy; Levine, Stephen; Liu, Michael; Luginbuhl, Christian; Monet, Alice; Stone, Ronald; Subasavage, John; Tilleman, Trudy; Walker, Richard

    2013-01-01T23:59:59.000Z

    The white dwarf LHS 3236 (WD1639+153) is shown to be a double-degenerate binary, with each component having a high mass. Astrometry at the U.S. Naval Observatory gives a parallax and distance of 30.86 +/- 0.25 pc and a tangential velocity of 98 km/s, and reveals binary orbital motion. The orbital parameters are determined from astrometry of the photocenter over more than three orbits of the 4.0-year period. High-resolution imaging at the Keck Observatory resolves the pair with a separation of 31 and 124 mas at two epochs. Optical and near-IR photometry give a set of possible binary components. Consistency of all data indicates that the binary is a pair of DA stars with temperatures near 8000 and 7400 K and with masses of 0.93 and 0.91 M_solar; also possible, is a DA primary and a helium DC secondary with temperatures near 8800 and 6000 K and with masses of 0.98 and 0.69 M_solar. In either case, the cooling ages of the stars are ~3 Gyr and the total ages are <4 Gyr. The combined mass of the binary (1.66--1....

  6. The binary white dwarf LHS 3236

    SciTech Connect (OSTI)

    Harris, Hugh C.; Dahn, Conard C.; Canzian, Blaise; Guetter, Harry H.; Levine, Stephen E.; Luginbuhl, Christian B.; Monet, Alice K. B.; Stone, Ronald C.; Subasavage, John P.; Tilleman, Trudy; Walker, Richard L. [US Naval Observatory, 10391 West Naval Observatory Road, Flagstaff, AZ 86001-8521 (United States); Dupuy, Trent J.; Liu, Michael C. [Institute for Astronomy, University of Hawaii, 2680 Woodlawn Drive, Honolulu, HI 96822 (United States); Hartkopf, William I. [US Naval Observatory, 3450 Massachusetts Avenue, N.W., Washington, DC 20392-5420 (United States); Ireland, Michael J. [Department of Physics and Astronomy, Macquarie University, New South Wales, NSW 2109 (Australia); Leggett, S. K., E-mail: hch@nofs.navy.mil [Gemini Observatory, 670 N. Aohoku Place, Hilo, HI 96720 (United States)

    2013-12-10T23:59:59.000Z

    The white dwarf LHS 3236 (WD1639+153) is shown to be a double-degenerate binary, with each component having a high mass. Astrometry at the U.S. Naval Observatory gives a parallax and distance of 30.86 ± 0.25 pc and a tangential velocity of 98 km s{sup –1}, and reveals binary orbital motion. The orbital parameters are determined from astrometry of the photocenter over more than three orbits of the 4.0 yr period. High-resolution imaging at the Keck Observatory resolves the pair with a separation of 31 and 124 mas at two epochs. Optical and near-IR photometry give a set of possible binary components. Consistency of all data indicates that the binary is a pair of DA stars with temperatures near 8000 and 7400 K and with masses of 0.93 and 0.91 M {sub ?}; also possible is a DA primary and a helium DC secondary with temperatures near 8800 and 6000 K and with masses of 0.98 and 0.69 M {sub ?}. In either case, the cooling ages of the stars are ?3 Gyr and the total ages are <4 Gyr. The combined mass of the binary (1.66-1.84 M {sub ?}) is well above the Chandrasekhar limit; however, the timescale for coalescence is long.

  7. Water Integration Project Science Strategies White Paper

    SciTech Connect (OSTI)

    Alan K. Yonk

    2003-09-01T23:59:59.000Z

    This white paper has been prepared to document the approach to develop strategies to address Idaho National Engineering and Environmental Laboratory (INEEL) science and technology needs/uncertainties to support completion of INEEL Idaho Completion Project (Environmental Management [EM]) projects against the 2012 plan. Important Idaho Completion Project remediation and clean-up projects include the 2008 OU 10-08 Record of Decision, completion of EM by 2012, Idaho Nuclear Technology and Engineering Center Tanks, INEEL CERCLA Disposal Facility, and the Radioactive Waste Management Complex. The objective of this effort was to develop prioritized operational needs and uncertainties that would assist Operations in remediation and clean-up efforts at the INEEL and develop a proposed path forward for the development of science strategies to address these prioritized needs. Fifteen needs/uncertainties were selected to develop an initial approach to science strategies. For each of the 15 needs/uncertainties, a detailed definition was developed. This included extracting information from the past interviews with Operations personnel to provide a detailed description of the need/uncertainty. For each of the 15 prioritized research and development needs, a search was performed to identify the state of the associated knowledge. The knowledge search was performed primarily evaluating ongoing research. The ongoing research reviewed included Environmental Systems Research Analysis, Environmental Management Science Program, Laboratory Directed Research and Development, Inland Northwest Research Alliance, United States Geological Survey, and ongoing Operations supported projects. Results of the knowledge search are documented as part of this document.

  8. DISCOVERY OF AN ULTRAMASSIVE PULSATING WHITE DWARF

    SciTech Connect (OSTI)

    Hermes, J. J.; Castanheira, Barbara G.; Winget, D. E.; Montgomery, M. H.; Harrold, Samuel T. [Department of Astronomy, University of Texas at Austin, Austin, TX 78712 (United States); Kepler, S. O. [Instituto de Fisica, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS (Brazil); Gianninas, A. [Homer L. Dodge Department of Physics and Astronomy, University of Oklahoma, 440 W. Brooks Street, Norman, OK 73019 (United States); Brown, Warren R., E-mail: jjhermes@astro.as.utexas.edu [Smithsonian Astrophysical Observatory, 60 Garden Street, Cambridge, MA 02138 (United States)

    2013-07-01T23:59:59.000Z

    We announce the discovery of the most massive pulsating hydrogen-atmosphere white dwarf (WD) ever discovered, GD 518. Model atmosphere fits to the optical spectrum of this star show it is a 12, 030 {+-} 210 K WD with a log g =9.08 {+-} 0.06, which corresponds to a mass of 1.20 {+-} 0.03 M{sub Sun }. Stellar evolution models indicate that the progenitor of such a high-mass WD endured a stable carbon-burning phase, producing an oxygen-neon-core WD. The discovery of pulsations in GD 518 thus offers the first opportunity to probe the interior of a WD with a possible oxygen-neon core. Such a massive WD should also be significantly crystallized at this temperature. The star exhibits multi-periodic luminosity variations at timescales ranging from roughly 425 to 595 s and amplitudes up to 0.7%, consistent in period and amplitude with the observed variability of typical ZZ Ceti stars, which exhibit non-radial g-mode pulsations driven by a hydrogen partial ionization zone. Successfully unraveling both the total mass and core composition of GD 518 provides a unique opportunity to investigate intermediate-mass stellar evolution, and can possibly place an upper limit to the mass of a carbon-oxygen-core WD, which in turn constrains Type Ia supernovae progenitor systems.

  9. White House Council of Economic Advisers and Energy Department...

    Energy Savers [EERE]

    D.C., May 8, 2013. | Official White House Photo by Pete Souza. Smart Grid Week: Hurricane Season and the Department's Efforts to Make the Grid More Resilient to Power Outages...

  10. Statement from the White House Press Secretary on the Ongoing...

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

    WHITE HOUSE Office of the Press Secretary Our thoughts and our prayers remain with the people of Japan. The President has been kept fully briefed on developments and the response...

  11. MOF Coating a Promising Path to White LEDs

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

    (MOF); the structure was determined at Beamline 11.3.1. Coating a blue light-emitting diode (LED) with this compound readily generates white light with high luminous...

  12. White House Solar Champions of Change- Watch Now

    Broader source: Energy.gov [DOE]

    On April 17, 2014 the White House honored solar energy deployment Champions of Change from across the United States. The honorees include several current and former SunShot awardees.

  13. Española students invited to White House Science Fair

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

    June 2015 All Issues submit Espaola students invited to White House Science Fair Team selected from among 40,000 competitors May 1, 2015 Sixth-graders Casandra Dauz, Jos...

  14. Advances in Chip Technology, Packaging Enable White LED Breakthroughs

    Broader source: Energy.gov [DOE]

    Significant advances in chip technology have enabled Cree, Inc.'s Santa Barbara Technology Center to demonstrate white LEDs with record efficacies as high as 74 lumens per watt - on par with...

  15. White County REMC- Residential Geothermal Heat Pump Rebate Program

    Broader source: Energy.gov [DOE]

    White County REMC offers incentives for the purchase and installation of energy efficient heat pumps. Air-source heat pumps are eligible for a rebate of $300, while geothermal heat pumps are...

  16. White House Spotlights Solar Innovation as Summit Registration...

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

    In case you missed it, last Thursday's White House Solar Champions of Change and Solar Summit shed a spotlight on all the amazing work that solar innovators around country are...

  17. White Papers Submitted to the Technology Innovation Program

    E-Print Network [OSTI]

    Magee, Joseph W.

    White Papers Submitted to the Technology Innovation Program The Technology Innovation Program (TIP) at the National Institute of Standards and Technology was established laboratories and nonprofit research institutions, to support, promote, and accelerate innovation in the U

  18. Jonathan White, Dale Thompson University of ArkansasMotivation

    E-Print Network [OSTI]

    Thompson, Dale R.

    DANIEL 13. JACKSON KAREN PAUL 14. WHITE BETTY MARK 15. HARRIS HELEN DONALD 16. MARTIN SANDRA GEORGE 17 line. Offset Name Ranges 1 AAAAAAAAA ALI 2 ALICEA ANDERSON 3 ANDERTON AVERETT Results The method

  19. NextSTEPS White Paper: Three Routes Forward for Biofuels

    E-Print Network [OSTI]

    California at Davis, University of

    NextSTEPS White Paper: Three Routes Forward for Biofuels: Incremental, Transitional, and Leapfrog NOT CITE #12;Three Routes Forward for Biofuels: Incremental, Transitional, and Leapfrog 2 Contents ......................................................................................................................................12 1.a. The Need for Low Carbon Biofuels

  20. ORIGINAL CONTRIBUTION Association of White Matter Hyperintensity Volume

    E-Print Network [OSTI]

    California at Davis, University of

    ORIGINAL CONTRIBUTION Association of White Matter Hyperintensity Volume With Decreased Cognitive was restricted to the study of older in- dividuals, limiting our understanding of the full impact of WMH

  1. White organic light-emitting diodes: Status and perspective

    E-Print Network [OSTI]

    Reineke, Sebastian; Lüssem, Björn; Leo, Karl

    2013-01-01T23:59:59.000Z

    White organic light-emitting diodes (OLEDs) are ultra-thin, large-area light sources made from organic semiconductor materials. Over the last decades, much research has been spent on finding the suitable materials to realize highly efficient monochrome and white OLEDs. With their high efficiency, color-tunability, and color-quality, white OLEDs are emerging to become one of the next generation light sources. In this review, we discuss the physics of a variety of device concepts that are introduced to realize white OLEDs based on both polymer and small molecule organic materi als. Owing to the fact that about 80 % of the internally generated photons are trapped within the thin-film layer structure, we put a second focus on reviewing promising concepts for improved light outcoupling.

  2. Lab White Paper Hitachi Unified Compute Platform (UCP)

    E-Print Network [OSTI]

    Chaudhuri, Surajit

    Architectures for Private Clouds By Kerry Dolan, Lab Analyst February 2014 This ESG Lab White Paper Reference Architecture for Private Clouds 2 © 2014 by The Enterprise Strategy Group, Inc. All Rights? ....................................................................................................................... 4 Microsoft Private Cloud Fast Track

  3. astro2010 science white: Topics by E-print Network

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

    21 22 23 24 25 Next Page Last Page Topic Index 1 Astro2010 White Paper Coronal "Dark Energy" and SolarStellar Activity Physics Websites Summary: and atmospheric heating....

  4. White organic light-emitting diodes: Status and perspective

    E-Print Network [OSTI]

    Reineke, Sebastian

    White organic light-emitting diodes (OLEDs) are ultrathin, large-area light sources made from organic semiconductor materials. Over the past decades, much research has been spent on finding suitable materials to realize ...

  5. The development of an aquatic spill model for the White Oak Creek watershed, Oak Ridge National Laboratory, Oak Ridge, Tennessee

    SciTech Connect (OSTI)

    Johnson, R.O.

    1996-05-01T23:59:59.000Z

    This study develops an aquatic spill model applicable to the White Oak Creek watershed draining the Oak Ridge National Laboratory. Hazardous, toxic, and radioactive chemicals are handled and stored on the laboratory reservation. An accidental spill into the White Oak Creek watershed could contaminate downstream water supplies if insufficient dilution did not occur. White Oak Creek empties into the Clinch River, which flows into the Tennessee River. Both rivers serve as municipal water supplies. The aquatic spill model provides estimates of the dilution at sequential downstream locations along White Oak creek and the Clinch River after an accidental spill of a liquid containing a radioactively decaying constituent. The location of the spill on the laboratory is arbitrary, while hydrologic conditions range from drought to extreme flood are simulated. The aquatic spill model provides quantitative estimates with which to assess water quality downstream from the site of the accidental spill, allowing an informed decision to be made whether to perform mitigating measures so that the integrity of affected water supplies is not jeopardized.

  6. Greening of the White House: Six year report

    SciTech Connect (OSTI)

    None

    1999-11-01T23:59:59.000Z

    The White House, which recently celebrated its 200th birthday, has a long tradition of demonstrating technological innovation. In keeping with that tradition, President Clinton announced the Greening of the White House Initiative on Earth Day 1993. The initiative improves the energy and environmental performance of the White House complex by identifying opportunities to reduce waste, lower energy use, and make an appropriate use of renewable resources, all while improving indoor air quality and building comfort. This report on President Clinton's legacy of greening at the White House summarizes progress made to date and gives an overview of new opportunities identified during the past year. It also includes an environmental history of the White House and a short tour of the buildings that make up the White House complex. Over the past five years, this initiative has involved hundreds of dedicated people from both within and outside government. A description of how they worked together to develop and implement the Greening Plan is also included in this report.

  7. Ages of White Dwarf-Red Subdwarf Systems

    E-Print Network [OSTI]

    Hektor Monteiro; Wei-Chun Jao; Todd Henry; John Subasavage; Thom Beaulieu

    2005-10-12T23:59:59.000Z

    We provide the first age estimates for two recently discovered white dwarf-red subdwarf systems, LHS 193AB and LHS 300AB. These unusual systems provide a new opportunity for linking the reliable age estimates for the white dwarfs to the (measurable) metallicities of the red subdwarfs. We have obtained precise photometry in the $V_{J}R_{KC}I_{KC}JH$ bands and spectroscopy covering from 6000\\AA to 9000\\AA for the two new systems, as well as for a comparison white dwarf-main sequence red dwarf system, GJ 283 AB. Using model grids available in the literature, we estimate the cooling age as well as temperature, surface gravity, mass, progenitor mass and {\\it total} lifetimes of the white dwarfs. The results indicate that the two new systems are probably ancient thick disk objects with ages of at least 6-9 Gyr. We also conduct searches of red dwarf and white dwarf compendia from SDSS data and the L{\\'e}pine Shara Proper Motion (LSPM) catalog for additional common proper motion white dwarf-red subdwarf systems. Only seven new candidate systems are found, which indicates the rarity of these systems.

  8. Pulsational Instabilities in Accreting White Dwarfs

    E-Print Network [OSTI]

    Phil Arras; Dean M. Townsley; Lars Bildsten

    2006-04-13T23:59:59.000Z

    (Abridged) The Cataclysmic Variable (CV) population harbors a diverse range of donor stars and accreting white dwarfs (WDs). A range of WD masses is expected, from low mass Helium core WDs, to massive WDs which have previously accreted at rates high enough for Hydrogen to burn steadily. Furthermore, a wide range of Helium enrichment is expected in the accreted material depending on the degree to which the donor star is evolved. We investigate the impact of this diversity on the range of effective temperatures ($T_{\\rm eff}$) for which g-modes are unstable. The critical $T_{\\rm eff}$ below which modes are unstable ("blue edge") depends on both surface gravity, $g$, and He abundance, $Y$. The Hydrogen/first Helium ionization instability strip is more sensitive to $g$ than $Y$. We find that (for solar composition envelopes), relative to a fiducial WD mass $0.6 M_\\odot$, the blue edge for a $0.4 M_\\odot$ He core WD shifts downward by $\\approx 1000 {\\rm K}$, while that for a massive $\\approx 1.2 M_\\odot$ WD shifts upward by $\\approx 2000 {\\rm K}$. The second Helium ionization instability strip exhibits strong dependences on both $g$ and $Y$. Surprisingly, increasing $Y$ by only 10% relative to solar creates an instability strip near $15,000 {\\rm K}$. Hence CV's below the period gap with evolved donor stars of $Y\\ga 0.4$ may have an "intermediate" instability strip well outside of the isolated DA and DB variables. This "intermediate" instability strip also occurs for low mass He WD with solar composition envelopes. The lack of pulsations in CV's with $T_{\\rm eff}$ in the pure Hydrogen ZZ Ceti instability strip is also easily explained.

  9. Contribution of White Dwarfs to Cluster Masses

    E-Print Network [OSTI]

    Ted von Hippel

    1998-02-14T23:59:59.000Z

    I present a literature search through 31 July 1997 of white dwarfs (WDs) in open and globular clusters. There are 36 single WDs and 5 WDs in binaries known among 13 open clusters, and 340 single WDs and 11 WDs in binaries known among 11 globular clusters. From these data I have calculated WD mass fractions for four open clusters (the Pleiades, NGC 2168, NGC 3532, and the Hyades) and one globular cluster (NGC 6121). I develop a simple model of cluster evolution that incorporates stellar evolution but not dynamical evolution to interpret the WD mass fractions. I augment the results of my simple model with N-body simulations incorporating stellar evolution (Terlevich 1987; de la Feunte Marcos 1996; Vesperini & Heggie 1997). I find that even though these clusters undergo moderate to strong kinematical evolution the WD mass fraction is relatively insensitive to kinematical evolution. By comparing the cluster mass functions to that of the Galactic disk, and incorporating plausibility arguments for the mass function of the Galactic halo, I estimate the WD mass fraction in these two populations. I assume the Galactic disk is ~10 Gyrs old (Winget et al. 1987; Liebert, Dahn, & Monet 1988; Oswalt et al. 1996) and that the Galactic halo is ~12 Gyrs old (Reid 1997b; Gratton et al. 1997; Chaboyer et al. 1998), although the WD mass fraction is insensitive to age in this range. I find that the Galactic halo should contain 8 to 9% (alpha = -2.35) or perhaps as much as 15 to 17% (alpha = -2.0) of its stellar mass in the form of WDs. The Galactic disk WD mass fraction should be 6 to 7% (alpha = -2.35), consistent with the empirical estimates of 3 to 7% (Liebert, Dahn, & Monet 1988; Oswalt et al. 1996). (abridged)

  10. COMPUTING APPLICATIONS APPLICATIONS

    E-Print Network [OSTI]

    Bader, David A.

    COMPUTING APPLICATIONS APPLICATIONS APPLICATIONS David A. Bader NEW MEXICO, USA Robert Pennington of the interconnect net- work and related software is shown by comparing the same application running on a large

  11. A COMPREHENSIVE SPECTROSCOPIC ANALYSIS OF DB WHITE DWARFS

    SciTech Connect (OSTI)

    Bergeron, P.; Wesemael, F.; Dufour, Pierre; Beauchamp, A.; Hunter, C.; Gianninas, A.; Limoges, M.-M.; Dufour, Patrick; Fontaine, G. [Departement de Physique, Universite de Montreal, C.P. 6128, Succ. Centre-Ville, Montreal, QC H3C 3J7 (Canada); Saffer, Rex A. [Strayer University, 234 Mall Boulevard, Suite G-50, King of Prussia, PA 19406 (United States); Ruiz, M. T. [Departamento de Astronomia, Universidad de Chile, Casilla 36-D, Santiago (Chile); Liebert, James, E-mail: bergeron@astro.umontreal.ca, E-mail: wesemael@astro.umontreal.ca, E-mail: gianninas@astro.umontreal.ca, E-mail: limoges@astro.umontreal.ca, E-mail: dufourpa@astro.umontreal.ca, E-mail: fontaine@astro.umontreal.ca, E-mail: alain.beauchamp@fti-ibis.com, E-mail: chris.hunter@yale.edu, E-mail: rex.saffer@strayer.edu, E-mail: mtruiz@das.uchile.cl [Steward Observatory, University of Arizona, Tucson, AZ 85721 (United States)

    2011-08-10T23:59:59.000Z

    We present a detailed analysis of 108 helium-line (DB) white dwarfs based on model atmosphere fits to high signal-to-noise optical spectroscopy. We derive a mean mass of 0.67 M{sub sun} for our sample, with a dispersion of only 0.09 M{sub sun}. White dwarfs also showing hydrogen lines, the DBA stars, comprise 44% of our sample, and their mass distribution appears similar to that of DB stars. As in our previous investigation, we find no evidence for the existence of low-mass (M < 0.5 M{sub sun}) DB white dwarfs. We derive a luminosity function based on a subset of DB white dwarfs identified in the Palomar-Green Survey. We show that 20% of all white dwarfs in the temperature range of interest are DB stars, although the fraction drops to half this value above T{sub eff} {approx} 20,000 K. We also show that the persistence of DB stars with no hydrogen features at low temperatures is difficult to reconcile with a scenario involving accretion from the interstellar medium, often invoked to account for the observed hydrogen abundances in DBA stars. We present evidence for the existence of two different evolutionary channels that produce DB white dwarfs: the standard model where DA stars are transformed into DB stars through the convective dilution of a thin hydrogen layer and a second channel where DB stars retain a helium atmosphere throughout their evolution. We finally demonstrate that the instability strip of pulsating V777 Her white dwarfs contains no non-variables, if the hydrogen content of these stars is properly accounted for.

  12. 1998 Pacific Northwest Loads and Resources Study: The White Book.

    SciTech Connect (OSTI)

    United States. Bonneville Power Administration.

    1998-12-01T23:59:59.000Z

    The Pacific Northwest Loads and Resources Study (White Book) is published annually by BPA and establishes the planning basis for supplying electricity to customers. It serves a dual purpose. First, the White Book presents projections of regional and Federal system load and resource capabilities, along with relevant definitions and explanations. Second, the White Book serves as a benchmark for annual BPA determinations made pursuant to the 1981 regional power sales contracts. Specifically, BPA uses the information in the White Book for determining the notice required when customers request to increase or decrease the amount of power purchased from BPA. The White Book compiles information obtained from several formalized resource planning reports and data submittals, including those from the Northwest Power Planning Council (Council) and the Pacific Northwest Utilities Conference Committee (PNUCC). The White Book is not an operational planning guide, nor is it used for inventory planning to determine BPA revenues. Operation of the Federal Columbia River Power System (FCRPS) is based on a set of criteria different from that used for resource planning decisions. Operational planning is dependent upon real-time or near-term knowledge of system conditions, including expectations of river flows and runoff, market opportunities, availability of reservoir storage, energy exchanges, and other factors affecting the dynamics of operating a power system. The 1998 White Book is presented in two documents: (1) this summary of Federal system and Pacific Northwest region loads and resources; and (2) a technical appendix detailing the loads and resources for each major Pacific Northwest generating utility. This analysis updates the December 1997 Pacific Northwest Loads and Resources Study.

  13. High-Power Warm-White Hybrid LED Package for Illumination

    SciTech Connect (OSTI)

    Soer, Wouter

    2013-09-19T23:59:59.000Z

    In this project, an integrated warm-white hybrid light engine was developed. The hybrid approach involves combining phosphor-converted off-white InGaN LEDs and direct-emitting red AlInGaP LEDs in a single light engine to achieve high efficacy together with high color rendering index. We developed and integrated technology improvements in InGaN and AlInGaP die technology, phosphor technology, package architecture and encapsulation, to realize a hybrid warm-white LED package with an efficacy of 140 lm/W at a correlated color temperature of 3000K and a color rendering index of 90, measured under representative operating conditions. This efficacy is 26% higher than the best warm-white LEDs of similar specification that are commercially available at the end of the project. Since the InGaN- and AlInGaP-based LEDs used in the hybrid engine show different behavior as a function of current and temperature, a control system needs to be in place to ensure a stable color point over all operating conditions. In this project, we developed an electronic control circuit that is fully integrated into the light engine in such a way that the module can simply be driven by a conventional single-channel driver. The integrated control circuit uses a switch-mode boost converter topology to control the LED drive currents based on the temperature and the input current of the light engine. A color control performance of 5 SDCM was demonstrated, and improvement to 3 SDCM is considered well within reach. The combination of high efficacy and ease of integration with existing single-channel drivers is expected to facilitate the adoption of the hybrid technology and accelerate the energy savings associated with solid-state lighting. In the product commercialization plan, downlights and indirect-lit troffers have been selected as the first target applications for this product concept. Fully functional integrated prototypes have been developed for both applications, and the business case evaluation is ongoing as of the end of the project.

  14. Structural, thermal, optical properties and simulation of white light of titanium-tungstate-tellurite glasses doped with dysprosium

    SciTech Connect (OSTI)

    Jyothi, L. [School of Physics, University of Hyderabad, Hyderabad 500046 (India); Upender, G. [Glass Science and Technology Section, Glass Division, CSIR-CGCRI, Kolkata 700032 (India); Kuladeep, R. [School of Physics, University of Hyderabad, Hyderabad 500046 (India); Rao, D. Narayana, E-mail: dnrsp@uohyd.ernet.in [School of Physics, University of Hyderabad, Hyderabad 500046 (India)

    2014-02-01T23:59:59.000Z

    Graphical abstract: CIE coordinate diagram of different concentrations of the Dy{sup 3+}-doped TTWD glasses with coordinates in the white light region. - Highlights: • Radiative lifetime of {sup 4}F{sub 9/2} level of Dy{sup 3+} ions is longer in the tellurite glass. • Quantum efficiency is found to be high. • These glasses are suitable materials for generating white light. - Abstract: Structural, thermal, optical properties and simulation of white light of Dy{sup 3+}-doped tellurite glasses of composition TTWD: (75 ? x)TeO{sub 2} ? 10TiO{sub 2} ? 15WO{sub 3} ? xDy{sub 2}O{sub 3} (x = 0, 0.1, 0.5, 1.0 and 2.0 mol%) were investigated. Raman spectra revealed that the glass contains TeO{sub 4}, TeO{sub 3}, WO{sub 4} and WO{sub 6} units. Differential scanning calorimetry (DSC) measurements were carried out to measure the glass transition temperature of all the glasses. From the optical absorption spectra, luminescence spectra and using the Judd–Ofelt (JO) analysis, we estimated the radiative transition probabilities, emission cross-sections, branching ratios and radiative lifetimes. The decay curves at lower concentrations are exponential while they show a non-exponential behavior at higher concentrations (?0.5 mol%) due to energy transfer processes. The effective lifetime for the {sup 4}F{sub 9/2} level decreases with increase in Dy{sub 2}O{sub 3} concentration for the glasses under investigation. The non-exponential decay curves could fit well to the Inokuti–Hirayama (IH) model with S = 6, indicating that the nature of interaction responsible for energy transfer is of dipole–dipole type. Simulation of white light is examined with varying concentration and the results indicate that these glasses are suitable for white light emitting diode applications.

  15. A Critical Examination of Halo White Dwarf Candidates

    E-Print Network [OSTI]

    P. Bergeron

    2002-11-26T23:59:59.000Z

    A detailed analysis of halo white dwarf candidates is presented, which is based on model atmosphere fits to observed energy distributions built from photoelectric or photographic magnitudes. Most of the candidates identified in reduced proper motion diagrams are shown to be too warm (Teff > 5000 K) and most likely too young to be members of the galactic halo, while the tangential velocities of the cooler and thus older white dwarfs are shown to be entirely consistent with the disk population. The results suggest that some white dwarf stars born in the young disk may have high velocities with respect to the local standard of rest. Such objects could represent the remnants of donor stars from close mass-transfer binaries that produced type Ia supernovae via the single degenerate channel, or other scenarios suggested in the literature. Ongoing surveys that rely solely on reduced proper motion diagrams are likely to identify more of these high velocity young degenerates, rather than to unveil the old white dwarf population of the galactic halo. The importance of infrared photometry for studying extremely cool white dwarfs is also emphasized.

  16. Biomagnification of organochlorines in Lake Erie white bass

    SciTech Connect (OSTI)

    Russell, R.W.; Lazar, R.; Haffner, G.D. [Univ. of Windsor, Ontario (Canada)

    1995-04-01T23:59:59.000Z

    Biomagnification of HCB and PCBs was measured in a natural fish population of white bass (Morone chrysops) and their prey, emerald shiner (Notropis atherinoides). It was observed that biomagnification occurred only for chemicals with an octanol/water partition coefficient (log K{sub ow}) greater than 6.1. Hexachlorobenzene and PCB 52 did not biomagnify while PCBs 87, 138, and 180 showed significant biomagnification in Lake Erie white bass. Biomagnification factors increased proportionately with K{sub ow}, and it was concluded that high K{sub ow} chemicals were more important in the biomagnification process. Lipid proportions and chemical concentrations in prey fish (emerald shiner) and white bass intestinal contents were consistent with a fugacity model of chemical assimilation from food.

  17. Making Time-stepped Applications Tick in the Cloud

    E-Print Network [OSTI]

    Keinan, Alon

    Making Time-stepped Applications Tick in the Cloud Tao Zou, Guozhang Wang, Marcos Vaz Salles*, David Bindel, Alan Demers, Johannes Gehrke, Walker White 1 Cornell University *University of Copenhagen · Iterative Graph Processing · Matrix Computation #12;Why Run Scientific Applications in the Cloud

  18. White paper updating conclusions of 1998 ILAW performance assessment

    SciTech Connect (OSTI)

    MANN, F.M.

    2000-05-11T23:59:59.000Z

    The purpose of this document is to provide a comparison of the estimated immobilized low-activity waste (LAW) disposal system performance against established performance objectives using the beat estimates for parameters and models to describe the system. The principal advances in knowledge since the last performance assessment (known as the 1998 ILAW PA [Mann 1998a]) have been in site specific information and data on the waste form performance for BNFL, Inc. relevant glass formulations. The white paper also estimates the maximum release rates for technetium and other key radionuclides and chemicals from the waste form. Finally, this white paper provides limited information on the impact of changes in waste form loading.

  19. Adrenal weight in a Texas white-tailed deer herd

    E-Print Network [OSTI]

    Ramsey, Charles Warren

    1975-01-01T23:59:59.000Z

    ADRENAL WEIGHT IN A TEXAS WHITE-TAILED DEER HERD A Thesis by CHARLES WARREN RAMSEY Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirement for the degree of MASTER OF SCIENCE December 1975 Major... Subject: Wildlife and Fisheries Sciences ADRENAL WEIGHT IN A TEXAS WHITE-TAILED DEER HERD A Thesis by CHARLES WARREN RAMSEY Approved as to style and content by: ( airman o Committ ) (Head of Department) (Member) (Member) December 1975 1. 1, 1...

  20. Thermonuclear explosions of Chandrasekhar-mass C+O white dwarfs

    E-Print Network [OSTI]

    M. Reinecke; W. Hillebrandt; J. C. Niemeyer

    1999-04-23T23:59:59.000Z

    First results of simulations are presented which compute the dynamical evolution of a Chandrasekhar-mass white dwarf, consisting of equal amounts of carbon and oxygen, from the onset of violent thermonuclear burning, by means of a new two-dimensional numerical code. Since in the interior of such a massive white dwarf nuclear burning progresses on microscopic scales as a sharp discontinuity, a so-called flamelet, which cannot be resolved by any numerical scheme, and since on macroscopic scales the burning front propagates due to turbulence, we make an attempt to model both effects explicitly in the framework of a finite-volume hydrodynamics code. Turbulence is included by a sub-grid model, following the spirit of large eddy simulations, and the well-localized burning front is treated by means of a level set, which allows us to compute the geometrical structure of the front more accurately than with previous methods. The only free parameters of our simulations are the location and the amount of nuclear fuel that is ignited as an initial perturbation. We find that models in which explosive carbon burning is ignited at the center remain bound by the time the front reaches low densities, where we stopped the computations because our description of combustion is no longer applicable. In contrast, off-center ignition models give rise to explosions which, however, are still too weak for typical Type Ia supernovae. Possible reasons for this rather disappointing result are discussed.

  1. GRMHD formulation of highly super-Chandrasekhar rotating magnetised white dwarfs: Stable configurations of non-spherical white dwarfs

    E-Print Network [OSTI]

    Subramanian, Sathyawageeswar

    2015-01-01T23:59:59.000Z

    Here we extend the exploration of significantly super-Chandrasekhar magnetised white dwarfs by numerically computing axisymmetric stationary equilibria of differentially rotating magnetised polytropic compact stars in general relativity (GR), within the ideal magnetohydrodynamic regime. We use a general relativistic magnetohydrodynamic (GRMHD) framework that describes rotating and magnetised axisymmetric white dwarfs, choosing appropriate rotation laws and magnetic field profiles (toroidal and poloidal). The numerical procedure for finding solutions in this framework uses the 3+1 formalism of numerical relativity, implemented in the open source XNS code. We construct equilibrium sequences by varying different physical quantities in turn, and highlight the plausible existence of super-Chandrasekhar white dwarfs, with masses in the range of 2-3 solar mass, with central (deep interior) magnetic fields of the order of $10^{14}$ Gauss and differential rotation with surface time periods of about 1-10 seconds. We no...

  2. Organic Electronics and Photovoltaics CopyrightDaveWhite2008

    E-Print Network [OSTI]

    ENERGY Organic Electronics and Photovoltaics Objective CopyrightDaveWhite2008 Organic electronics and photovoltaic technology are reaching critical mass with the establishment of a U.S. consortium and the recent an inte- grated suite of measurement methods to tie the electrical and photovoltaic performance of organic

  3. Price and Inventory Competition in Oligopoly TV White Space Markets

    E-Print Network [OSTI]

    Huang, Jianwei

    's wholesale pricing strategy on the market equilibrium. Specifically, we analytically show how the wholesale further propose two different spectrum wholesale pricing strategies that maximize the database manager between these two wholesale pricing strategies. Index Terms--TV White Space, Price and Inventory

  4. ASYMPTOTIC EQUIVALENCE FOR INHOMOGENEOUS JUMP DIFFUSION PROCESSES AND WHITE NOISE.

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    ASYMPTOTIC EQUIVALENCE FOR INHOMOGENEOUS JUMP DIFFUSION PROCESSES AND WHITE NOISE. ESTER MARIUCCI Laboratoire Jean Kuntzmann, Grenoble. Abstract. We prove the global asymptotic equivalence between the experi. These asymptotic equivalences are established by constructing explicit Markov kernels that can be used to reproduce

  5. The great white shark, Carcharodon carcharias (Lamnidae), and the tiger

    E-Print Network [OSTI]

    , located dorsolaterally and posterior to the first dorsal fin. A second boat was present and both shark646 The great white shark, Carcharodon carcharias (Lamnidae), and the tiger shark, Galeocerdo cuvier (Carcharhin- idae), are two of the largest species of macropredatory sharks. Both are known

  6. MARKETS FOR REACTIVE POWER AND RELIABILITY: A WHITE PAPER

    E-Print Network [OSTI]

    1 MARKETS FOR REACTIVE POWER AND RELIABILITY: A WHITE PAPER Engineering and Economics of Electricity Research Group (E3 RG) CORNELL UNIVERSITY E3 RG contributing authors: Robert Thomas, Director the Consortium for Electric Reliability Technology Solutions (CERTS) and in part by the National Science

  7. White Paper Series Using Health Impact Assessments to

    E-Print Network [OSTI]

    North Carolina at Chapel Hill, University of

    professionals, decision makers, and communities § Saves health care dollars by considering short and longWhite Paper Series Using Health Impact Assessments to Evaluate Bicycle and Pedestrian Plans January of the Federal Highway Administration. Introduction Where we live, work, and play influences health, as well

  8. IBM Global Technology Services Thought Leadership White Paper

    E-Print Network [OSTI]

    IBM Global Technology Services Thought Leadership White Paper November 2010 Strategies for assessing cloud security #12;2 Securing the cloud: from strategy development to ongoing assessment Executive summary Cloud computing provides flexible, cost-effective delivery of business or consumer IT services

  9. IBM Systems and Technology Thought Leadership White Paper

    E-Print Network [OSTI]

    IBM Systems and Technology Thought Leadership White Paper June 2011 Building the perfect cloud with IBM System z A cloud computing platform that leverages the strengths of industry-leading mainframe technology #12;2 Building the perfect cloud with IBM System z Introduction Cloud computing helps

  10. White dwarfs constraints on dark sector models with light particles

    SciTech Connect (OSTI)

    Ubaldi, Lorenzo [Physikalisches Institut der Universität Bonn, Nussallee 12, D-53115 Bonn (Germany)

    2014-06-24T23:59:59.000Z

    The white dwarf luminosity function is well understood in terms of standard model physics and leaves little room for exotic cooling mechanisms related to the possible existence of new weakly interacting light particles. This puts significant constraints on the parameter space of models that contain a massive dark photon and light dark sector particles.

  11. SOCIAL NETWORKS, COGNITION AND CULTURE Douglas R. White

    E-Print Network [OSTI]

    White, Douglas R.

    1 SOCIAL NETWORKS, COGNITION AND CULTURE Douglas R. White Blackwell Companion to Handbook are core concepts formalized by network analysis to provide tests of social theory. As for core problems that can be understood in relation to social processes. Network ethnography can also operate in this way

  12. The White House Office of the Press Secretary

    E-Print Network [OSTI]

    Rathbun, Julie A.

    The White House Office of the Press Secretary For Immediate Release April 15, 2010 Remarks's in the house. (Applause.) Four decades ago, Buzz became a legend. But in the four decades since he's also been with a transmitter and a battery strapped to the top of a missile. But the world was stunned. Americans were

  13. Future Grid: The Environment Future Grid Initiative White Paper

    E-Print Network [OSTI]

    Future Grid: The Environment Future Grid Initiative White Paper Power Systems Engineering Research Center Empowering Minds to Engineer the Future Electric Energy System #12;Future Grid: The Environment Prepared for the Project "The Future Grid to Enable Sustainable Energy Systems" Funded by the U

  14. 4-Poster Tick Management and White-tailed Deer Management

    E-Print Network [OSTI]

    Homes, Christopher C.

    the methodologies for Integrated Wildlife Damage Management approach #12;Environmental Assessment Purpose and NeedUpdate on: 4-Poster Tick Management and White-tailed Deer Management Tim Green Environmental been on hold until present #12;Environmental Assessment Current Status: · Adopting two existing EAs - U

  15. Patterns of Identification: The Children of Latino/Non-Latino White Families

    E-Print Network [OSTI]

    Fox, Amber

    2012-02-14T23:59:59.000Z

    and ethnically identify their children. Specifically, I use both multinomial logistic regression and multilevel binomial logistic regression to predict the outcome of the child either being identified as Latino (white or other) or non-Latino (white or other...

  16. High-Efficiency and Stable White Organic Light-Emitting Diode...

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

    Efficiency and Stable White Organic Light-Emitting Diode Using a Single Emitter High-Efficiency and Stable White Organic Light-Emitting Diode Using a Single Emitter Presenter: Jian...

  17. SciTech Connect: White and Monochromatic X-ray Microbeam Investigation...

    Office of Scientific and Technical Information (OSTI)

    White and Monochromatic X-ray Microbeam Investigations of Materials Microstructure and Tri-Axial Stress Citation Details In-Document Search Title: White and Monochromatic X-ray...

  18. Microsoft Word - GRS Review_OMB White Paper - Real Property Right...

    Office of Environmental Management (EM)

    GRS ReviewOMB White Paper - Real Property Right-sizing and Carbon Reduction August 7 2009 2.docx Microsoft Word - GRS ReviewOMB White Paper - Real Property Right-sizing and...

  19. 2 Executive Summary Figure 1 Location of White Salmon subbasin, topography, vegetation, demographics, and hydrology

    E-Print Network [OSTI]

    , demographics, and hydrology #12;xii 2.1 Purpose and Scope The White Salmon subbasin management plan

  20. ESPC Success Story- Food and Drug Administration (FDA) White Oak Campus

    Broader source: Energy.gov [DOE]

    FEMP ESPC Success Story on water conservation and green energy at the Food and Drug Administration (FDA) White Oak Campus.

  1. Mitigation of light rail transit construction on jurisdictional areas in the White Rock Creek floodplain, Dallas, Texas

    E-Print Network [OSTI]

    Schieffer, Emily; Smiley, Jerry

    2001-01-01T23:59:59.000Z

    AREAS IN THE WHITE ROCK CREEK FLOODPLAIN, DALLAS, TEXAS1.2-miles of the White Rock Creek floodplain near theconfluence of three creeks and adjacent to approximately

  2. Scalable Brain Network Construction on White Matter Fibers Moo K. Chung1,3,6

    E-Print Network [OSTI]

    Chung, Moo K.

    of white matter fibers are connected so we are actually dealing with paired point cloud data. SoScalable Brain Network Construction on White Matter Fibers Moo K. Chung1,3,6 , Nagesh Adluru3 to characterize the structural connectivity of the human brain non-invasively by tracing white matter fiber tracts

  3. Aftershocks of an Explosively Induced Mine Collapse at White Pine, Michigan

    E-Print Network [OSTI]

    Aftershocks of an Explosively Induced Mine Collapse at White Pine, Michigan W. Scott Phillips1 , D collapse and subsequent aftershocks at White Pine, Michigan, using an array of 12 seismic stations, sited controlled mine collapse at White Pine, Michigan gave us the opportunity to study a collapse

  4. Multiple phase estimation for arbitrary pure states under white noise

    E-Print Network [OSTI]

    Yao Yao; Li Ge; Xing Xiao; Xiaoguang Wang; C. P. Sun

    2014-09-08T23:59:59.000Z

    In any realistic quantum metrology scenarios, the ultimate precision in the estimation of parameters is limited not only by the so-called Heisenberg scaling, but also the environmental noise encountered by the underlying system. In the context of quantum estimation theory, it is of great significance to carefully evaluate the impact of a specific type of noise on the corresponding quantum Fisher information (QFI) or quantum Fisher information matrix (QFIM). Here we investigate the multiple phase estimation problem for a natural parametrization of arbitrary pure states under white noise. We obtain the explicit expression of the symmetric logarithmic derivative (SLD) and hence the analytical formula of QFIM. Moreover, the attainability of the quantum Cram\\'{e}r-Rao bound (QCRB) is confirmed by the commutability of SLDs and the optimal estimators are elucidated for the experimental purpose. These findings generalize previously known partial results and highlight the role of white noise in quantum metrology.

  5. Evidence for helium in the magnetic white dwarf GD229

    E-Print Network [OSTI]

    S. Jordan; P. Schmelcher; W. Becken; W. Schweizer

    1998-06-25T23:59:59.000Z

    The nature of the strong absorption features in the white dwarf GD229 has been a real mystery ever since it was found to be magnetic in 1974. All attempts to explain the spectrum by line components of hydrogen failed. With the first sets of newly calculated line data for HeI in a strong magnetic field we could identify most of the absorption structures in the spectrum with stationary line components in a range of magnetic fields between 300 and 700 MG. This is much lower than previously speculated and is comparable to the highest fields found in hydrogen rich magnetic white dwarfs. The reason for the large number of spectral features in GD229 is the extreme accumulation of stationary components of transitions in He I in a narrow interval of field strengths.

  6. Spectral modeling of gaseous metal disks around DAZ white dwarfs

    E-Print Network [OSTI]

    K. Werner; T. Nagel; T. Rauch

    2008-09-30T23:59:59.000Z

    We report on our attempt for the first non-LTE modeling of gaseous metal disks around single DAZ white dwarfs recently discovered by Gaensicke et al. and thought to originate from a disrupted asteroid. We assume a Keplerian rotating viscous disk ring composed of calcium and hydrogen and compute the detailed vertical structure and emergent spectrum. We find that the observed infrared CaII emission triplet can be modeled with a hydrogen-deficient gas ring located at R=1.2 R_sun, inside of the tidal disruption radius, with Teff about 6000 K and a low surface mass density of about 0.3 g/cm**2. A disk having this density and reaching from the central white dwarf out to R=1.2 R_sun would have a total mass of 7 10**21 g, corresponding to an asteroid with about 160 km diameter.

  7. Radionuclide concentrations in white sturgeon from the Columbia River

    SciTech Connect (OSTI)

    Dauble, D.D.; Price, K.R.; Poston, T.M.

    1992-09-01T23:59:59.000Z

    Although radioactive releases from the US Department of Energy`s Hanford Site have been monitored in the environment since the reactors began operating in 1945, recent information regarding historical releases of radionuclides has led to renewed interest in estimating human exposure to radionuclides at Hanford. Knowledge of the fate of radionuclides in some fish species may be important because of the potential for food-chain transfer to humans. White sturgeon (Acipenser transmontanus) were selected for study because they are long-lived, reside year-round in the Hanford Reach, are benthic, and are an important commercial and sport species in the Columbia River. They also have a greater potential for accumulating persistent radionuclides than shorter-lived species with pelagic and/or anadromous life histories. The purpose of our study was to summarize data on historical concentrations of industrial radionuclides in white sturgeon and to collect additional data on current body burdens in the Columbia River.

  8. White LED Benchmark of 65 Lumens Per Watt Achieved

    Broader source: Energy.gov [DOE]

    Novel chip design and the balance of multiple interrelated design parameters have enabled Cree, Inc.'s Santa Barbara Technology Center to demonstrate white LEDs with efficacies greater than 65 lumens per watt at 350 mA. The results are particularly significant because they were achieved with a pre-production prototype chip using the same package used in Cree's commercially available XLamp® 7090 high power LED, rather than a laboratory device.

  9. The origin of white luminescence from silicon oxycarbide thin films

    SciTech Connect (OSTI)

    Nikas, V.; Gallis, S., E-mail: sgalis@us.ibm.com; Huang, M.; Kaloyeros, A. E. [College of Nanoscale Sciences and Engineering, State University of New York, Albany, New York 12203 (United States); Nguyen, A. P. D.; Stesmans, A.; Afanas'ev, V. V. [Department of Physics and Astronomy, University of Leuven, Celestijnenlaan 200D, B-3001 Leuven (Belgium)

    2014-02-10T23:59:59.000Z

    Silicon oxycarbide (SiC{sub x}O{sub y}) is a promising material for achieving strong room-temperature white luminescence. The present work investigated the mechanisms for light emission in the visible/ultraviolet range (1.5–4.0?eV) from chemical vapor deposited amorphous SiC{sub x}O{sub y} thin films, using a combination of optical characterizations and electron paramagnetic resonance (EPR) measurements. Photoluminescence (PL) and EPR studies of samples, with and without post-deposition passivation in an oxygen and forming gas (H{sub 2} 5 at.?% and N{sub 2} 95 at.?%) ambient, ruled out typical structural defects in oxides, e.g., Si-related neutral oxygen vacancies or non-bridging oxygen hole centers, as the dominant mechanism for white luminescence from SiC{sub x}O{sub y}. The observed intense white luminescence (red, green, and blue emission) is believed to arise from the generation of photo-carriers by optical absorption through C-Si-O related electronic transitions, and the recombination of such carriers between bands and/or at band tail states. This assertion is based on the realization that the PL intensity dramatically increased at an excitation energy coinciding with the E{sub 04} band gaps of the material, as well as by the observed correlation between the Si-O-C bond density and the PL intensity. An additional mechanism for the existence of a blue component of the white emission is also discussed.

  10. Detailed Spectroscopic and Photometric Analysis of DQ White Dwarfs

    E-Print Network [OSTI]

    P. Dufour; P. Bergeron; G. Fontaine

    2005-03-04T23:59:59.000Z

    We present an analysis of spectroscopic and photometric data for cool DQ white dwarfs based on improved model atmosphere calculations. In particular, we revise the atmospheric parameters of the trigonometric parallax sample of Bergeron et al.(2001), and discuss the astrophysical implications on the temperature scale and mean mass, as well as the chemical evolution of these stars. We also analyze 40 new DQ stars discovered in the first data release of the Sloan Digital Sky Survey.

  11. Efficacy of 45 lm/W Achieved in White OLED

    Broader source: Energy.gov [DOE]

    Universal Display Corporation (UDC) successfully demonstrated an all phosphorescent white organic light emitting diode (WOLED™) with a power efficacy of 45 lm/W at 1,000 cd/m2. This high-efficacy device was enabled by lowering the device operating voltage, increasing the outcoupling efficiency to ~40% from ~20%, and by incorporating highly efficient phosphorescent emitters that are capable of converting nearly all current passing through a WOLED into light.

  12. White House Tribal Youth Gathering | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE: Alternative JC3 RSS SeptemberRenewableAbout Key Activities Plans,EnergyofStudyEnergyWhite

  13. Measuring M dwarf Winds with DAZ White Dwarfs

    E-Print Network [OSTI]

    J. H. Debes

    2006-08-01T23:59:59.000Z

    Hydrogen atmosphere white dwarfs with metal lines, so-called DAZs, show evidence for ongoing accretion of material onto their surfaces. Some DAZs are known to have unresolved M dwarf companions, which could account for the observed accretion through a stellar wind. I combine observed Ca abundances of the DAZs with information on the orbital separation of their M dwarf companions to infer the mass loss rate of the M dwarfs. I find that for three of the six known DAZs with M dwarf companions, a stellar wind can plausibly explain the observed accretion on the white dwarfs assuming Bondi-Hoyle accretion of solar abundance stellar winds on the order of 10$^{-14}-10^{-16}\\Msun$ yr$^{-1}$. The rest of the sample have companions with orbits $\\gtorder$ 1~AU, and require companion mass loss rates of $> 10^{-11}\\Msun$ yr$^{-1}$. I conclude that there must be an alternative explanation for accretion of material onto DAZs with widely separated companions. The inferred winds for two of the close binaries are orders of magnitude smaller than typically assumed for the angular momentum loss of red dwarf-white dwarf pairs due to magnetic braking from a stellar wind and may seriously affect predictions for the formation rate of CVs with low mass companions.

  14. Constraining the neutrino magnetic dipole moment from white dwarf pulsations

    E-Print Network [OSTI]

    Córsico, Alejandro H; Bertolami, Marcelo M Miller; Kepler, S O; García-Berro, Enrique

    2014-01-01T23:59:59.000Z

    Pulsating white dwarf stars can be used as astrophysical laboratories to constrain the properties of weakly interacting particles. Comparing the cooling rates of these stars with the expected values from theoretical models allows us to search for additional sources of cooling due to the emission of axions, neutralinos, or neutrinos with magnetic dipole moment. In this work, we derive an upper bound to the neutrino magnetic dipole moment using an estimate of the rate of period change of the pulsating DB white dwarf star PG 1351+489. By comparing the theoretical rate of change of period expected for this star with the rate of change of period with time of PG 1351+489, we assess the possible existence of additional cooling by neutrinos with magnetic dipole moment. Our models suggest the existence of some additional cooling in this pulsating DB white dwarf, consistent with a non-zero magnetic dipole moment. Our upper limit for the neutrino magnetic dipole moment is somewhat less restrictive than, but still compat...

  15. IMBS ANNUAL REPORT 2005-2006 Douglas R. White 5. Social and Economic Phenomena: as per the web site

    E-Print Network [OSTI]

    White, Douglas R.

    · Social Dynamics and Evolution : Butts, Narens, Romney, Saari, Skyrms, Smyth, Stern, and White Text

  16. 78.1: Ultra Compact Polarization Recycling System for White Light LED based Pico-Projection System

    E-Print Network [OSTI]

    78.1: Ultra Compact Polarization Recycling System for White Light LED based Pico-Projection System polarization recycling system, for white light LED based projectors, is proposed. White light LED is applied. In this paper, we propose an ultra compact polarization recycling system for white light LED based projection

  17. 1999 White Book, Pacific Northwest Loads and Resources Study

    SciTech Connect (OSTI)

    none,

    1999-12-01T23:59:59.000Z

    The Pacific Northwest Loads and Resources Study (White Book) is published annually by BPA and establishes the planning basis for supplying electricity to customers. It serves a dual purpose. First, the White Book presents projections of regional and Federal system load and resource capabilities, along with relevant definitions and explanations. Second, the White Book serves as a benchmark for annual BPA determinations made pursuant to its regional power sales contracts.1 Specifically, BPA uses the information in the White Book for determining the notice required when customers request to increase or decrease the amount of power purchased from BPA. The White Book will not be used in calculations for the 2002 regional power sales contract subscription process. The White Book compiles information obtained from several formalized resource planning reports and data submittals, including those from the Northwest Power Planning Council (Council) and the Pacific Northwest Utilities Conference Committee (PNUCC). The White Book is not an operational planning guide, nor is it used for determining BPA revenues. Operation of the Federal Columbia River Power System (FCRPS) is based on a set of criteria different from that used for resource planning decisions. Operational planning is dependent upon real-time or near-term knowledge of system conditions, including expectations of river flows and runoff, market opportunities, availability of reservoir storage, energy exchanges, and other factors affecting the dynamics of operating a power system. In this loads and resources study, resource availability is compared with a medium forecast of electricity consumption. The forecasted future electricity demands—firm loads—are subtracted from the projected capability of existing and “contracted for” resources to determine whether BPA and the region will be surplus or deficit. If Federal system resources are greater than loads in any particular year or month, there is a surplus of energy and/or capacity, which BPA may use or market to increase revenues. Conversely, if Federal system firm loads exceed available resources, there is a deficit of energy and/or capacity and BPA would add conservation or contract purchases as needed to meet its firm loads. The load forecast is derived by using econometric models and analysis to predict the loads that will be placed on electric utilities in the region. This study incorporates information on contract obligations and contract resources, combined with the resource capabilities obtained from public utility and investor-owned utility (IOU) customers through their annual data submittals to the PNUCC, from BPA’s Firm Resource Exhibit (FRE Exhibit I) submittals, and through analysis of the Federal hydroelectric power system. The loads and resources analysis in this study simulates the operation of the power system under the Pacific Northwest Coordination Agreement (PNCA) produced by the Pacific Northwest Coordinating Group. The PNCA defines the planning and operation of the regional hydrosystem.

  18. 1998 White Book, Pacific Northwest Loads and Resources Study (summary)

    SciTech Connect (OSTI)

    none,

    1998-12-01T23:59:59.000Z

    The Pacific Northwest Loads and Resources Study (White Book) is published annually by BPA and establishes the planning basis for supplying electricity to customers. It serves a dual purpose. First, the White Book presents projections of regional and Federal system load and resource capabilities, along with relevant definitions and explanations. Second, the White Book serves as a benchmark for annual BPA determinations made pursuant to the 1981 regional power sales contracts.1 Specifically, BPA uses the information in the White Book for determining the notice required when customers request to increase or decrease the amount of power purchased from BPA. The White Book compiles information obtained from several formalized resource planning reports and data submittals, including those from the Northwest Power Planning Council (Council) and the Pacific Northwest Utilities Conference Committee (PNUCC). The White Book is not an operational planning guide, nor is it used for inventory planning to determine BPA revenues. Operation of the Federal Columbia River Power System (FCRPS) is based on a set of criteria different from that used for resource planning decisions. Operational planning is dependent upon real-time or near-term knowledge of system conditions, including expectations of river flows and runoff, market opportunities, availability of reservoir storage, energy exchanges, and other factors affecting the dynamics of operating a power system. The 1998 White Book is presented in two documents: 1) this summary of Federal system and Pacific Northwest region loads and resources; and 2) a technical appendix detailing the loads and resources for each major Pacific Northwest generating utility. This analysis updates the December 1997 Pacific Northwest Loads and Resources Study. The load forecast is derived by using economic planning models to predict the loads that will be placed on electric utilities in the region. This study incorporates information on contract obligations and contract resources, combined with the resource capabilities obtained from public utility and investor-owned utility (IOU) customers through their annual data submittals to the PNUCC, from BPA’s Firm Resource Exhibit (FRE Exhibit 1) submittals, and through analysis of the Federal hydroelectric power system. The 1998 study uses the same economic forecast used for the 1997 study. In this loads and resources study, resource availability is compared with a medium forecast of electricity consumption. The forecasted future electricity demands—firm loads—are subtracted from the projected capability of existing and “contracted for” resources to determine whether BPA and the region will be surplus or deficit. If Federal system resources are greater than loads in any particular year or month, there is a surplus of energy and/or capacity, which BPA may use or market to increase revenues. Conversely, if Federal system firm loads exceed available resources, there is a deficit of energy and/or capacity and BPA would add conservation or contract purchases as needed to meet its firm loads.

  19. TOF SIMS analysis and generation of white photoluminescence from strontium silicate codoped with europium and terbium

    SciTech Connect (OSTI)

    Tshabalala, Modiehi A.; Swart, Hendrik C.; Ntwaeaborwa, Odireleng M., E-mail: ntwaeab@ufs.ac.za [Department of Physics, University of the Free State, P.O Box 339, Bloemfontein 9300 South Africa (South Africa)

    2014-03-15T23:59:59.000Z

    White light emitting terbium (Tb{sup 3+}) and europium (Eu{sup 3+}) codoped strontium silicate (Sr{sub 2}SiO{sub 4}) phosphors were prepared by a solid state reaction process. The structure, particle morphology, chemical composition, ion distribution, photoluminescence (PL), and decay characteristics of the phosphors were analyzed by x-ray diffraction (XRD), scanning electron microscopy (SEM), time-of-flight secondary ion mass spectrometry (TOF-SIMS), and PL spectroscopy, respectively. The XRD data showed that our Sr{sub 2}SiO{sub 4} composed of two phases, namely, ?-Sr{sub 2}SiO{sub 4} and ??-Sr{sub 2}SiO{sub 4}, and the ??-Sr{sub 2}SiO{sub 4} phase was more prominent than the ?-Sr{sub 2}SiO{sub 4} phase. The SEM micrographs showed that the particles were agglomerated together and they did not have definite shapes. All ions (i.e., negative and positive) present in our materials were identified by TOF-SIMS. In addition, the chemical imaging performed with the TOF-SIMS demonstrated how the individual ions including the dopants (Eu{sup 3+} and Tb{sup 3+}) were distributed in the host lattice. White photoluminescence was observed when the Sr{sub 2}SiO{sub 4}:Tb{sup 3+}, Eu{sup 3+} phosphor was excited at 239?nm using a monochromatized xenon lamp as the excitation source. The phosphor exhibited fast decay lifetimes implying that it is not a good candidate for long afterglow applications.

  20. Detached white-dwarf close-binary stars -- CV's extended family

    E-Print Network [OSTI]

    T. R. Marsh

    1999-06-07T23:59:59.000Z

    I review detached binaries consisting of white dwarfs with either other white dwarfs or low mass main-sequence stars in tight orbits around them. Orbital periods have been measured for 15 white dwarf/white dwarf systems and 22 white dwarf/M dwarf systems. While small compared to the number of periods known for CVs (>300), I argue that each variety of detached system has a space density an order of magnitude higher that of CVs. While theory matches the observed distribution of orbital periods of the white dwarf/white dwarf binaries, it predicts white dwarfs of much lower mass than observed. Amongst both types of binary are clear examples of helium core white dwarfs, as opposed to the usual CO composition; similar systems must exist amongst the CVs. White dwarf/M dwarf binaries suffer from selection effects which diminish the numbers seen at long and short periods. They are useful for the study of irradiation; I discuss evidence to suggest that Balmer emission is broadened by optical depth effects to an extent which limits its usefulness for imaging the secondary stars in CVs.

  1. Revisiting the Impact of Axions in the Cooling of White Dwarfs

    E-Print Network [OSTI]

    Brenda Melendez; Marcelo Miller Bertolami; Leandro Althaus

    2012-10-01T23:59:59.000Z

    It has been shown that the shape of the luminosity function of white dwarfs can be a powerful tool to check for the possible existence of DFSZ-axions. In particular, Isern et al. (2008) showed that, if the axion mass is of the order of a few meV, then the white dwarf luminosity function is sensitive enough to detect their existence. For axion masses of about $m_a > 5$ meV the axion emission can be a primary cooling mechanism for the white dwarf and the feedback of the axion emission into the thermal structure of the white dwarf needs to be considered. Here we present computations of white dwarf cooling sequences that take into account the effect of axion emission in a self consistent way by means of full stellar evolution computations. Then, we study and discuss the impact of the axion emission in the white dwarf luminosity function.

  2. Renewable Energy Opportunities at White Sands Missile Range, New Mexico

    SciTech Connect (OSTI)

    Chvala, William D.; Solana, Amy E.; States, Jennifer C.; Warwick, William M.; Weimar, Mark R.; Dixon, Douglas R.

    2008-09-01T23:59:59.000Z

    The document provides an overview of renewable resource potential at White Sands Missile Range (WSMR) based primarily upon analysis of secondary data sources supplemented with limited on-site evaluations. The effort was funded by the U.S. Army Installation Management Command (IMCOM) as follow-on to the 2005 DoD Renewable Energy Assessment. This effort focuses on grid-connected generation of electricity from renewable energy sources and also ground source heat pumps (GSHPs) for heating and cooling buildings, as directed by IMCOM.

  3. Thermonuclear Explosions of Chandrasekhar-Mass White Dwarfs

    E-Print Network [OSTI]

    W. Hillebrandt; M. Reinecke; J. C. Niemeyer

    2000-05-16T23:59:59.000Z

    We present a new way of modeling turbulent thermonuclear deflagration fronts in Chandrasekhar-mass white dwarfs, consisting of carbon and oxygen, undergoing a type Ia supernova explosion. Our approach is a front capturing/tracking hybrid scheme, based on a level set method, which treats the front as a mathematical discontinuity and allows for full coupling between the front geometry and the flow field. First results of the method applied to the problem of type Ia supernovae are discussed. It will be shown that even in 2-D and even with a physically motivated sub-grid model numerically ``converged'' results are difficult to obtain.

  4. World Record White OLED Performance Exceeds 100 lm/W

    Broader source: Energy.gov [DOE]

    Universal Display Corporation (UDC) has successfully demonstrated a record-breaking white organic light-emitting diode (WOLED) with a power efficacy of 102 lm/W at 1000 cd/m2 using its proprietary, high-efficiency phosphorescent OLED technology. This achievement represents a significant milestone for OLED technology, demonstrating performance that surpasses the power efficacy of incandescent bulbs with less than 15 lm/W and fluorescent lamps at 60-90 lm/W. Funded in part by DOE, UDC's achievement is a major step toward DOE's roadmap goal of a 150 lm/W commercial OLED light source by 2015.

  5. White House honors Los Alamos physicist's early career work

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

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

  6. City of White, South Dakota (Utility Company) | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual Siteof EnergyInnovationin UrbanCity ofCity ofInformation City ofWhite, South Dakota

  7. The White House Goes Solar | Department of Energy

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33Frequently AskedEnergyIssuesEnergy SolarRadioactive LiquidSavings for Specific U.S.The White

  8. Commissioning of CHP Systems - White Paper, April 2008 | Department of

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't Your Destiny: Theof"Wave the WhiteNational| Department of Energy

  9. Automation World Features New White Paper on Wireless Security | Department

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't Your Destiny: The FutureComments fromof Energy Automation World Features New White Paper on

  10. White House Champions of Change Recognizes Solar Innovator | Department of

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onYouTube YouTube Note: SinceDevelopment | Department ofPartnerships ToolkitWaste Heatv3)ofEnergy White House

  11. White Paper on DOE-HEP Accelerator Modeling Science Activities

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

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

  12. White County Rural E M C | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualProperty Edit withTianlin BaxinUmweltVillageGraphWellton-MohawkWesternwishWhirlpoolWhite County

  13. Intersectionality and the Perpetuation of White Male Power through Interracial Sexual Violence

    E-Print Network [OSTI]

    Feinstein, Rachel Anne

    2014-04-02T23:59:59.000Z

    ). The legal system, which upheld the rights of white slaveholding men to own and abuse their property including sexual violence of their slaves, was a central part of the institutionalization of racism and racialized sexism (Feagin 2013a). Additionally... were white men or the fathers of their children were white men (Jennings 1990:60-61). However, care should be taken when attempting to generalize from this sample of slave narratives. Because the rape of slaves was a topic of interest among...

  14. ORISE: The Value of Independence, a white paper on DOE Order...

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

    verification an official requirement for contractors involved in decontamination and decommissioning (D&D) projects at former nuclear sites operated by DOE. In the white paper...

  15. Magnetic white dwarfs in the Early Data Release of the Sloan Digital Sky Survey

    E-Print Network [OSTI]

    B. T. Gaensicke; F. Euchner; S. Jordan

    2002-08-26T23:59:59.000Z

    We have identified 7 new magnetic DA white dwarfs in the Early Data Release of the Sloan Digital Sky Survey. Our selection strategy has also recovered all the previously known magnetic white dwarfs contained in the SDSS EDR, KUV03292+0035 and HE0330-0002. Analysing the SDSS fibre spectroscopy of the magnetic DA white dwarfs with our state-of-the-art model spectra, we find dipole field strengths 1.5<=B_d<=63MG and effective temperatures 8500<=Teff<=39000K. As a conservative estimate, we expect that the complete SDSS will increase the number of known magnetic white dwarfs by a factor 3.

  16. White Paper on Energy Efficiency Status of Energy-Using Products in China (2011)

    E-Print Network [OSTI]

    Zhou, Nan

    2013-01-01T23:59:59.000Z

    Kai. Motor System Energy Efficiency Practical Guide [M].products in China – Energy efficiency standards and labelingWhite Paper – Energy Efficiency Status of Energy- Using

  17. Spotless Italy: Hygiene, Domesticity, and the Ubiquity of Whiteness in Fascist and Postwar Consumer Culture

    E-Print Network [OSTI]

    Lombardi-Diop, Cristina

    2011-01-01T23:59:59.000Z

    Spotless Italy: Hygiene, Domesticity, and the Ubiquity ofa certain obsession with hygiene seems to signal a desireculture, domesticity, hygiene, and whiteness begins. This

  18. Landau quantization and mass-radius relation of magnetized White Dwarfs in general relativity

    E-Print Network [OSTI]

    Mukhopadhyay, Somnath; Basu, D N

    2015-01-01T23:59:59.000Z

    Recently, several white dwarfs have been proposed with masses significantly above the Chandrasekhar limit, known as Super-Chandrasekhar White Dwarfs, to account for the overluminous Type Ia supernovae. In the present work, Equation of State of a completely degenerate relativistic electron gas in magnetic field based on Landau quantization of charged particles in a magnetic field is developed. The mass-radius relations for magnetized White Dwarfs are obtained by solving the Tolman-Oppenheimer-Volkoff equations. The effects of the magnetic energy density and pressure contributed by a density-dependent magnetic field are treated properly to find the stability configurations of realistic magnetic White Dwarf stars.

  19. Age, movements, and feeding ecology of northwest Atlantic white sharks estimated from ecogeochemical profiles in vertebrae

    E-Print Network [OSTI]

    Hamady, Li Ling

    2014-01-01T23:59:59.000Z

    White sharks (Carcharodon carcharias) are highly migratory, ecologically important, vulnerable, and understudied marine predators. Ecogeochemistry, which takes advantage of natural variations in chemical signatures recorded ...

  20. Retinal arteriolar geometry is associated with cerebral white matter hyperintensities on MRI 

    E-Print Network [OSTI]

    Doubal, F.N.; de Haan, R; MacGillivray, T.J.; Cohn-Hokke, P.; Dhillon, B.; Dennis, M.S.; Wardlaw, J.M.

    Background. Cerebral small vessel disease (lacunar stroke and cerebral white matter hyperintensities) is caused by vessel abnormalities of unknown aetiology. Retinal vessels show developmental and pathophysiological ...

  1. Red-white and blue baby: a case of phacomatosis pigmentovascularis type V

    E-Print Network [OSTI]

    Byrom, Lisa; Surjana, Devita; Yoong, Corinne; Zappala, Tania

    2015-01-01T23:59:59.000Z

    vignette Red-white and blue baby: a case of phacomatosisextensive greyish-blue patches (dermal melanocytosis)addition, marble-like reddish- blue patches consistent with

  2. Ultraviolet-driven white light generation from oxyfluoride glass co-doped with Tm{sup 3+}-Tb{sup 3+}-Eu{sup 3+}

    SciTech Connect (OSTI)

    Kuznetsov, A. S.; Nikitin, A.; Tikhomirov, V. K.; Shestakov, M. V.; Moshchalkov, V. V. [INPAC-Institute for Nanoscale Physics and Chemistry, KULeuven, Celestijnenlaan 200D, Heverlee, 3001 Leuven (Belgium)] [INPAC-Institute for Nanoscale Physics and Chemistry, KULeuven, Celestijnenlaan 200D, Heverlee, 3001 Leuven (Belgium)

    2013-04-22T23:59:59.000Z

    Tm{sup 3+}-Tb{sup 3+}-Eu{sup 3+} co-doped oxyfluoride glasses, doped with about 3.0 mol. % TmF{sub 3}, 0.25 mol. % TbF{sub 3}, and 0.25 mol. % EuF{sub 3}, have been prepared by melt quenching technique. Under excitation at commercial 365 nm, the rare-earth co-dopants are all directly excited and emit in the blue, green, and red, respectively, without appreciable energy transfer amongst the co-dopants. Tint of the white luminescence can be adjusted by changing the ratio of the co-dopants. Properties of the glass host promote excellent dissolution of the co-dopants and low non-radiative decay rate. The white emission at 365 nm excitation is suitable for light emitting diodes applications.

  3. DA WHITE DWARFS OBSERVED IN THE LAMOST PILOT SURVEY

    SciTech Connect (OSTI)

    Zhang Yueyang; Deng Licai; Liu Chao; Carrell, Kenneth; Yang Fan; Gao Shuang; Xu Yan; Li Jing; Zhang Haotong; Zhao Yongheng; Luo Ali; Bai Zhongrui; Yuan Hailong [Key Lab for Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012 (China); Lepine, Sebastien [Department of Astrophysics, Division of Physical Sciences, American Museum of Natural History, Central Park West at 79th Street, New York, NY (United States); Newberg, Heidi Jo; Carlin, Jeffrey L. [Department of Physics, Applied Physics and Astronomy, Rensselaer Polytechnic Institute, 110 8th Street, Troy, NY 12180 (United States); Jin Ge [University of Science and Technology of China, Hefei 230026 (China)

    2013-08-01T23:59:59.000Z

    A total of {approx}640, 000 objects from the LAMOST pilot survey have been publicly released. In this work, we present a catalog of DA white dwarfs (DAWDs) from the entire pilot survey. We outline a new algorithm for the selection of white dwarfs (WDs) by fitting Sersic profiles to the Balmer H{beta}, H{gamma}, and H{delta} lines of the spectra, and calculating the equivalent width of the Ca II K line. Two thousand nine hundred sixty-four candidates are selected by constraining the fitting parameters and the equivalent width of the Ca II K line. All the spectra of candidates are visually inspected. We identify 230 DAWDs (59 of which are already included in the Villanova and SDSS WD catalogs), 20 of which are DAWDs with non-degenerate companions. In addition, 128 candidates are classified as DAWDs/subdwarfs, which means the classifications are ambiguous. The result is consistent with the expected DAWD number estimated based on the LEGUE target selection algorithm.

  4. Measuring M dwarf Winds with DAZ White Dwarfs

    E-Print Network [OSTI]

    Debes, J H

    2006-01-01T23:59:59.000Z

    Hydrogen atmosphere white dwarfs with metal lines, so-called DAZs, show evidence for ongoing accretion of material onto their surfaces. Some DAZs are known to have unresolved M dwarf companions, which could account for the observed accretion through a stellar wind. I combine observed Ca abundances of the DAZs with information on the orbital separation of their M dwarf companions to infer the mass loss rate of the M dwarfs. I find that for three of the six known DAZs with M dwarf companions, a stellar wind can plausibly explain the observed accretion on the white dwarfs assuming Bondi-Hoyle accretion of solar abundance stellar winds on the order of 10$^{-14}-10^{-16}\\Msun$ yr$^{-1}$. The rest of the sample have companions with orbits $\\gtorder$ 1~AU, and require companion mass loss rates of $> 10^{-11}\\Msun$ yr$^{-1}$. I conclude that there must be an alternative explanation for accretion of material onto DAZs with widely separated companions. The inferred winds for two of the close binaries are orders of magn...

  5. A Detailed Spectroscopic and Photometric Analysis of DQ White Dwarfs

    E-Print Network [OSTI]

    P. Dufour; P. Bergeron; G. Fontaine

    2005-03-21T23:59:59.000Z

    We present an analysis of spectroscopic and photometric observations of cool DQ white dwarfs based on improved model atmosphere calculations. In particular, we revise the atmospheric parameters of the trigonometric parallax sample of Bergeron, Leggett, & Ruiz, and discuss the astrophysical implications on the temperature scale and mean mass, as well as the chemical evolution of these stars. We also analyze 40 new DQ stars discovered in the first data release of the Sloan Digital Sky Survey. Our analysis confirms that effective temperatures derived from model atmospheres including carbon are significantly lower than the temperatures obtained from pure helium models. Similarly the mean mass of the trigonometric parallax sample, = 0.62 Mo, is significantly lower than that obtained from pure helium models, = 0.73 Mo, and more consistent with the spectroscopic mean mass of DB stars, = 0.59 Mo, the most likely progenitors of DQ white dwarfs. We find that DQ stars form a remarkably well defined sequence in a carbon abundance versus effective temperature diagram; below Teff~10,000 K, carbon pollution decreases monotonically with decreasing effective temperature. Improved evolutionary models including diffusion and connecting to the PG 1159 phase are used to infer a typical value for the thickness of the helium layer M_He/M_* between 10^{-3} and 10^{-2}, compatible with the predictions of post-AGB models.

  6. LIMB-DARKENING COEFFICIENTS FOR ECLIPSING WHITE DWARFS

    SciTech Connect (OSTI)

    Gianninas, A.; Strickland, B. D.; Kilic, Mukremin [Homer L. Dodge Department of Physics and Astronomy, University of Oklahoma, 440 W. Brooks St., Norman, OK 73019 (United States)] [Homer L. Dodge Department of Physics and Astronomy, University of Oklahoma, 440 W. Brooks St., Norman, OK 73019 (United States); Bergeron, P., E-mail: alexg@nhn.ou.edu, E-mail: benstrickland@ou.edu, E-mail: kilic@ou.edu, E-mail: bergeron@astro.umontreal.ca [Departement de Physique, Universite de Montreal, C.P. 6128, Succ. Centre-Ville, Montreal, Quebec H3C 3J7 (Canada)

    2013-03-20T23:59:59.000Z

    We present extensive calculations of linear and nonlinear limb-darkening coefficients as well as complete intensity profiles appropriate for modeling the light-curves of eclipsing white dwarfs. We compute limb-darkening coefficients in the Johnson-Kron-Cousins UBVRI photometric system as well as the Large Synoptic Survey Telescope (LSST) ugrizy system using the most up to date model atmospheres available. In all, we provide the coefficients for seven different limb-darkening laws. We describe the variations of these coefficients as a function of the atmospheric parameters, including the effects of convection at low effective temperatures. Finally, we discuss the importance of having readily available limb-darkening coefficients in the context of present and future photometric surveys like the LSST, Palomar Transient Factory, and the Panoramic Survey Telescope and Rapid Response System (Pan-STARRS). The LSST, for example, may find {approx}10{sup 5} eclipsing white dwarfs. The limb-darkening calculations presented here will be an essential part of the detailed analysis of all of these systems.

  7. White food-type sorghum in direct-expansion extrusion applications 

    E-Print Network [OSTI]

    Acosta Sanchez, David

    2004-09-30T23:59:59.000Z

    Whole sorghum kernels were directly processed into whole grain snacks with acceptable texture. Extrudates made from whole sorghum had a harder gritty texture than those made from decorticated materials. Extrusion of whole ...

  8. Hybrid Inorganic/Organic Devices for Solid State White Lighting Applications

    E-Print Network [OSTI]

    Steckl, Andrew J.

    material (CCM). This paper focuses on the fabrication and characterization of Hybrid I/OTM lamp. waveguide CCM 400 nm LEDn = 1.5 n = 1.5 n = 1 waveguide CCM 400 nm LED 400 nm LEDn = 1.5 n = 1.5 n = 1 Figure 1-matched CCM which converts wavelength to desired color. Figure 2. Photograph of violet (no CCM), blue

  9. Assessing the Performance of 5mm White LED Light Sources for Developing-Country Applications

    E-Print Network [OSTI]

    Mills, Evan

    2007-01-01T23:59:59.000Z

    lamp calibrated by Labsphere Spectral measurements - LEDs inLEDs we tested is exceptionally good (as good or better than many compact fluorescent lamps),lamp. Off-grid lighting products using the poorer LEDs would

  10. Project Information Form Project Title White Paper on The application of permeable pavement with emphasis

    E-Print Network [OSTI]

    California at Davis, University of

    have increased tremendously as an alternative low impact development (LID) design for storm water best management practice (BMPs). Many researchers including the PI of this proposed project performed research with emphasis on successful design, water quality benefits, and identification of knowledge and data gaps

  11. White food-type sorghum in direct-expansion extrusion applications

    E-Print Network [OSTI]

    Acosta Sanchez, David

    2004-09-30T23:59:59.000Z

    characteristics. Extrudates made from polished rice were less expanded and whiter than extrudates made from sorghum. When processed under similar conditions, sorghum extrusion required more energy than corn meal extrusion. However, whole sorghum extrusion required...

  12. Ichthyophthirius multifiliis (White Spot) Infections in Ruth Francis-Floyd and Peggy Reed2

    E-Print Network [OSTI]

    Watson, Craig A.

    CIR920 Ichthyophthirius multifiliis (White Spot) Infections in Fish1 Ruth Francis-Floyd and Peggy that causes "Ich" or "white spot disease." This disease is a major prob- lem to aquarists and commercial fish producers world wide. Ichthyophthirius is an important disease of tropical fish, goldfish, and food fish

  13. TRACE and YOHKOH Observations of a White Light Flare Thomas R. Metcalf1

    E-Print Network [OSTI]

    Metcalf, Thomas R.

    . Hudson 2 , and Dana W. Longcope3 ABSTRACT We present observations of a large solar white light flare at 400 km s-1 . This is evidence in favor of particle acceleration models which energize the electrons), are typically the most energetic of solar flares. "White light" refers to continuum emission in excess

  14. Investigation of Genes Associated with the White Coat Color in Tigers 

    E-Print Network [OSTI]

    Larkin, Emilee 1991-

    2012-05-02T23:59:59.000Z

    of the white coat color and associated disorders so that breeding could be modified to avoid these detrimental phenotypes. We used information obtained from other species regarding the genes found to be involved to select two likely candidates for the white...

  15. Puget Sound Pacific Whiting, Merluccius productus, Resource and Industry: An Overview

    E-Print Network [OSTI]

    Puget Sound Pacific Whiting, Merluccius productus, Resource and Industry: An Overview MARK PEDERSEN Introduction There may be several aggregations of Pacific whiting, Merluccius pro- ductus, in Puget Sound, Wash., but only one currently supports a com- mercial fishery. This is the central Puget Sound population, which

  16. Network Processes in Evolving Systems Wed Jan 28'04 Doug White (working paper for RFG)

    E-Print Network [OSTI]

    White, Douglas R.

    and Sustainability Centralization and Power Law Connectivity Vulnerability Organization Ridge Structure (see below) 4Network Processes in Evolving Systems Wed Jan 28'04 Doug White (working paper for RFG) OUTLINE Processes in Evolving Systems Wed Jan 28'04 Doug White 1. Outlook: Network Processes, Topological Effects

  17. IMPROVING LARVAL SUNSHINE BASS PRODUCTION THROUGH SUPPLEMENTATION OF FEMALE WHITE BASS BROODSTOCK DIETS WITH

    E-Print Network [OSTI]

    tested, menhaden fish oil provided female white bass broodstock the fatty acids (~3.9% n-3 long fish oil are essential for embryonic survival, sunshine bass appear to have lower n-3 LCIMPROVING LARVAL SUNSHINE BASS PRODUCTION THROUGH SUPPLEMENTATION OF FEMALE WHITE BASS BROODSTOCK

  18. Habitat Use and Movements of Adult White Bass in Lake Poinsett

    E-Print Network [OSTI]

    .. SOUTH DAKOTA c ) o o o Habitat Use and Movements of Adult White Bass in Lake Poinsett South Dakota Department of Game, Fish and Parks Wildlife Division Joe Foss Building Pierre, South Dakota 57501-3182 Completion Report No. 99-15 #12;,-. ...., (""l r" rm Habitat Use and Movements ofAdult White Bass in Lake

  19. A generalized logistic model of individual tree mortality for aspen, white spruce, and lodgepole

    E-Print Network [OSTI]

    Macdonald, Ellen

    A generalized logistic model of individual tree mortality for aspen, white spruce, and lodgepole: A generalized logistic model of individual tree mortality was developed for trembling aspen (Populus tremuloides aspen (Populus tremuloides Michx), white spruce (Picea glauca (Moench) Voss), and lodgepole pine (Pinus

  20. A Guide for Preparing and Submitting White Papers to the Technology Innovation Program

    E-Print Network [OSTI]

    A Guide for Preparing and Submitting White Papers to the Technology Innovation Program October 2010 TECHNOLOGY INNOVATION PROGRAM National Institute of Standards and Technology U.S. Department of Commerce #12 competitions for the Technology Innovation Program (TIP) by offering ideas in the form of a white paper

  1. Liquid metal feeding through dendritic region in Ni-Hard white iron

    SciTech Connect (OSTI)

    Oryshchyn, Danylo B.; Dogan, Omer N.

    2005-01-01T23:59:59.000Z

    Liquid permeability in the dendritic regions is one of the factors that determine porosity formation and macro segregation in castings. Permeability in the dendritic structure of Ni-Hard white iron was measured as a function of temperature. Effect of microstructural coarsening on the permeability was also investigated. Permeability increased with coarsening dendritic structure in Ni-Hard white iron.

  2. Does Framingham stroke risk profile predict white-matter changes in late-life depression?

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    profile (FSRP), a well validated risk prediction algorithm, is associated with changes in white FSRP, and non-depressed controls (matched for mean vascular risk) would show minimal co-variance with white-matter changes. Methods: 36 participants with major depression (age 71.8±7.7 years, mean FSRP 10

  3. Nature Macmillan Publishers Ltd 1998 Old and blue white-dwarf stars

    E-Print Network [OSTI]

    Armitage, Phil

    Nature © Macmillan Publishers Ltd 1998 8 Old and blue white-dwarf stars as a detectable source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . The analysis1 of gravitational microlensing events of stars2,3 in the Large Magellanic Cloud places the masses of the lensing objects in the range 0.3­0.8 solar masses, suggesting that they might be old white-dwarf stars

  4. Discovery of a luminous white dwarf in a young star cluster in the Large Magellanic Cloud

    E-Print Network [OSTI]

    Rebecca A. W. Elson; Steinn Sigurdsson; Jarrod Hurley; Melvyn B. Davies; Gerard F. Gilmore

    1998-03-19T23:59:59.000Z

    We have identified a candidate 1-2 x 10^5 year old luminous white dwarf in NGC 1818, a young star cluster in the Large Magellanic Cloud. This discovery strongly constrains the boundary mass M_c at which stars stop forming neutron stars and start forming white dwarfs, to M_c > 7.6 Msun.

  5. EA-1809: White Earth Nation Wind Energy Project II, Becker and Mahnomen Counties, MN

    Broader source: Energy.gov [DOE]

    This EA evaluates the environmental impacts of a proposal to provide Congressionally Directed funds to the White Earth Nation to purchase and install up to four small mid-sized wind turbines at two sites near the towns of Waubun and Naytahwaush on the White Earth Reservation in Mahnomen County in western Minnesota .

  6. Evolution of resistance to white pine blister rust in high-elevation pines

    E-Print Network [OSTI]

    Tavener, Simon

    Evolution of resistance to white pine blister rust in high-elevation pines Mike Antolin, Stuart Station, USDA Forest Service Thanks: NSF award 0734267, USDA Forest Service Evolution of resistance ­ p. 1/74 #12;The basic ecology Evolution of resistance ­ p. 2/74 #12;High-elevation White Pines · Habitat: dry

  7. JANET RUTH WHITE University of Nevada -Las Vegas School of Architecture

    E-Print Network [OSTI]

    Ahmad, Sajjad

    JANET RUTH WHITE University of Nevada - Las Vegas School of Architecture Las Vegas, NV 89154-4018 janet.white@unlv.edu (702) 895 - 4431 EDUCATION Cornell University School of Architecture, Art and Planning Ph.D., May 2001, History of Architecture and Urbanism Dissertation title: "The Intersection

  8. Survival Estimates of White-tailed Deer Fawns at Fort Rucker, Alabama Angela Marie Jackson

    E-Print Network [OSTI]

    Ditchkoff, Steve

    Survival Estimates of White-tailed Deer Fawns at Fort Rucker, Alabama by Angela Marie Jackson for the Degree of Master of Science Auburn, Alabama August 6, 2011 Keywords: White-tailed deer, fawn survival, coyote, predator-prey theory Copyright 2011 by Angela Marie Jackson Approved by Stephen S. Ditchkoff

  9. Collisions of white dwarfs as a new progenitor channel for type Ia Stephan Rosswog1

    E-Print Network [OSTI]

    Rosswog, Stephan

    - nario, a shock-triggered thermonuclear explosion ensues from the collision of two white dwarfs systems should provide upcoming supernova surveys with hundreds of such collision-induced thermonuclear agreement that the disintegration of a white dwarf (WD) in a thermonuclear explosion constitutes

  10. TECHNICAL NOTE Development of new microsatellite primers for green and white

    E-Print Network [OSTI]

    May, Bernie

    TECHNICAL NOTE Development of new microsatellite primers for green and white sturgeon Karrigan Bo for microsatellite loci were developed from microsatellite motif enriched geno- mic libraries of pooled DNA from the polyploid green and white sturgeon (Acipenser medirostris and A. transmont- anus). Four individuals from

  11. WhiteCap DOE/ERIP progress report, October--December 1996

    SciTech Connect (OSTI)

    NONE

    1997-01-10T23:59:59.000Z

    This progress report describes work done October through December 1996 for the WhiteCap system. The work included installation and commissioning of the large WhiteCap system at the Common House, radiant cooling components installation in the floor of the Southwest House, preparation of an operations and maintenance manual, and commissioning of a monitoring system.

  12. Kalkaska: A Round White Chip-Processing Potato Variety with Common Scab Resistance

    E-Print Network [OSTI]

    Douches, David S.

    Kalkaska: A Round White Chip-Processing Potato Variety with Common Scab Resistance D. S. Douches & J. Coombs & R. Hammerschmidt & W. W. Kirk & C. Long Published online: 19 May 2009 # Potato Association of America 2009 Abstract Kalkaska is a high yielding, round white potato with an attractive

  13. Missaukee: A Round White Potato Variety Combining Chip-Processing With Resistance to Late Blight, Verticillium

    E-Print Network [OSTI]

    Douches, David S.

    Missaukee: A Round White Potato Variety Combining Chip-Processing With Resistance to Late Blight. Bird Published online: 26 August 2009 # Potato Association of America 2009 Abstract Previously identified as breeding line MSJ461-1, Missaukee is a round white chip processing potato variety resulting

  14. Thermal and Electric Conductivities of Coulomb Crystals in Neutron Stars and White Dwarfs

    E-Print Network [OSTI]

    D. A. Baiko; D. G. Yakovlev

    1996-04-28T23:59:59.000Z

    Thermal and electric conductivities are calculated for degenerate electrons scattered by phonons in a crystal made of atomic nuclei. The exact phonon spectrum and the Debye--Waller factor are taken into account. Monte Carlo calculations are performed for body-centered cubic (bcc) crystals made of C, O, Ne, Mg, Si, S, Ca, and Fe nuclei in the density range from $10^3$ to $10^{11}$ g cm$^{-3}$ at temperatures lower than the melting temperature but higher than the temperature at which the Umklapp processes begin to be "frozen out". A simplified method of calculation is proposed, which makes it possible to describe the results in terms of simple analytic expressions, to extend these expressions to any species of nucleus, and to consider face-centered cubic (fcc) crystals. The kinetic coefficients are shown to depend tangibly on the lattice type. The results are applicable to studies of heat transfer and evolution of the magnetic field in the cores of white dwarfs and in the crusts of neutron stars. The thermal drift of the magnetic field in the crust of a neutron star is discussed.

  15. 70 DA WHITE DWARFS IDENTIFIED IN LAMOST PILOT SURVEY

    SciTech Connect (OSTI)

    Zhao, J. K.; Luo, A. L.; Zhao, G. [Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012 (China); Oswalt, T. D., E-mail: zjk@bao.ac.cn, E-mail: gzhao@bao.ac.cn, E-mail: lal@bao.ac.cn, E-mail: toswalt@fit.edu [Physics and Space Science Department, Florida Institute of Technology, Melbourne, FL 32901 (United States)

    2013-06-01T23:59:59.000Z

    We present a spectroscopically identified catalog of 70 DA white dwarfs (WDs) from the LAMOST pilot survey. Thirty-five are found to be new identifications after cross-correlation with the Eisenstein et al. and Villanova catalogs. The effective temperature and gravity of these WDs are estimated by Balmer lines fitting. Most of them are hot WDs. The cooling times and masses of these WDs are estimated by interpolation in theoretical evolution tracks. The peak of the mass distribution is found to be {approx}0.6 M {sub Sun }, which is consistent with prior work in the literature. The distances of these WDs are estimated using the method of synthetic spectral distances. All of these WDs are found to be in the Galactic disk from our analysis of space motions. Our sample supports the expectation that WDs with high mass are concentrated near the plane of the Galactic disk.

  16. Astrometric determination of white dwarf radial velocities with Gaia?

    E-Print Network [OSTI]

    Jordan, Stefan

    2012-01-01T23:59:59.000Z

    Usually, the determination of radial velocities of stars relies on the shift of spectral lines by the Doppler effect. Russel & Atkinson (1931) and Oort (1932) already noted that due to the large proper motion and parallax of the white dwarf (WD) van Maanen 2, a determination of the perspective acceleration of the proper motion would provide a direct astrometric determination of the radial velocity which is independent of the gravitational redshift. If spectroscopic redshift measurements of Halpha and Hbeta NLTE cores exist, a purely astrometric determination would allow disentangling the gravitational redshift from the Doppler shift. The best instrument for measuring the tiny perspective acceleration is the Gaia satellite of the European Space Agency, aiming at absolute astrometric measurements of one billion stars down to 20th magnitude with unprecedented accuracy. At 15th magnitude, the predicted angular accuracy of Gaia is about 20 micro-arcseconds. In this article, we estimate whether it is possible t...

  17. THE ELM SURVEY. V. MERGING MASSIVE WHITE DWARF BINARIES

    SciTech Connect (OSTI)

    Brown, Warren R.; Kenyon, Scott J. [Smithsonian Astrophysical Observatory, 60 Garden St, Cambridge, MA 02138 (United States); Kilic, Mukremin; Gianninas, A. [Homer L. Dodge Department of Physics and Astronomy, University of Oklahoma, 440 W. Brooks St., Norman, OK, 73019 (United States); Allende Prieto, Carlos, E-mail: wbrown@cfa.harvard.edu, E-mail: skenyon@cfa.harvard.edu, E-mail: kilic@ou.edu, E-mail: alexg@nhn.ou.edu, E-mail: callende@iac.es [Instituto de Astrofisica de Canarias, E-38205, La Laguna, Tenerife (Spain)

    2013-05-20T23:59:59.000Z

    We present the discovery of 17 low-mass white dwarfs (WDs) in short-period (P {<=} 1 day) binaries. Our sample includes four objects with remarkable log g {approx_equal} 5 surface gravities and orbital solutions that require them to be double degenerate binaries. All of the lowest surface gravity WDs have metal lines in their spectra implying long gravitational settling times or ongoing accretion. Notably, six of the WDs in our sample have binary merger times <10 Gyr. Four have {approx}>0.9 M{sub Sun} companions. If the companions are massive WDs, these four binaries will evolve into stable mass transfer AM CVn systems and possibly explode as underluminous supernovae. If the companions are neutron stars, then these may be millisecond pulsar binaries. These discoveries increase the number of detached, double degenerate binaries in the ELM Survey to 54; 31 of these binaries will merge within a Hubble time.

  18. Broadband Collaboration Equipment Mobile Networks Security Storage White Papers Webcasts Tests News Blogs Newsletters Videos Events Resources More

    E-Print Network [OSTI]

    Chiao, Jung-Chih

    Broadband Collaboration Equipment Mobile Networks Security Storage White Papers Webcasts Tests News is absolutely gorgeous View more Latest News Home Networking White Papers Improving Business Value of WAN, improve... Accelerating Cloud Performance with WAN Optimization Today's smart CIOs are assessing

  19. "Our Generation Had Nothing to Do with Discrimination": White Southern Memory of Jim Crow and Civil Rights

    E-Print Network [OSTI]

    Lavelle, Kristen Marie

    2012-07-16T23:59:59.000Z

    was necessary for the sake of equality, but their narratives of civil rights era events downplay the importance of the movement and cast whites as victims and vulnerable subjects. Primarily in this chapter I analyze respondents? memories of the famed... in these narratives. Respondents justified white resistance to school desegregation as a nonracist stance and presented integrating schools and busing programs as chaotic and traumatic for vulnerable white children. I argue that the white victimology emerging...

  20. Implementation Applications

    E-Print Network [OSTI]

    Kazhdan, Michael

    ;Outline Theory Implementation Applications Background Intuition Definition Delaunay Triangulation Shape-Dimensional Shapes #12;Outline Theory Implementation Applications Background Intuition Definition Delaunay;Outline Theory Implementation Applications Background Intuition Definition Delaunay Triangulation Shape

  1. Synthesis and luminescence properties of rare earth activated phosphors for near UV-emitting LEDs for efficacious generation of white light

    E-Print Network [OSTI]

    Han, Jinkyu

    2013-01-01T23:59:59.000Z

    high-color-rendering LED lamps using oxyfluoride andin white LED. (a) Typical LED lamp package. (b) Uniformin white LED. (a) Typical LED lamp package. (b) Uniform

  2. The contribution of Oxygen-Neon white dwarfs to the MACHO content of the Galactic Halo

    E-Print Network [OSTI]

    J. Camacho; S. Torres; J. Isern; L. G. Althaus; E. Garcia-Berro

    2007-06-18T23:59:59.000Z

    The interpretation of microlensing results towards the Large Magellanic Cloud (LMC) still remains controversial. White dwarfs have been proposed to explain these results and, hence, to contribute significantly to the mass budget of our Galaxy. However, several constraints on the role played by regular carbon-oxygen white dwarfs exist. Massivewhite dwarfs are thought to be made of a mixture of oxygen and neon. Correspondingly, their cooling rate is larger than those of typical carbon-oxygen white dwarfs and they fade to invisibility in short timescales. Consequently, they constitute a good candidate for explaining the microlensing results. Here, we examine in detail this hypothesis by using the most recent and up-to-date cooling tracks for massive white dwarfs and a Monte Carlo simulator which takes into account the most relevant Galactic inputs. We find that oxygen-neon white dwarfs cannot account for a substantial fraction of the microlensing depth towards the LMC, independently of the adopted initial mass function, although some microlensing events could be due to oxygen--neon white dwarfs. The white dwarf population contributes at most a 5% to the mass of the Galactic halo.

  3. Limits on the neutrino magnetic dipole moment from the luminosity function of hot white dwarfs

    E-Print Network [OSTI]

    Marcelo Miguel Miller Bertolami

    2014-07-05T23:59:59.000Z

    Recent determinations of the white dwarf luminosity function (WDLF) from very large surveys have extended our knowledge of the WDLF to very high luminosities. This, together with the availability of new full evolutionary white dwarf models that are reliable at high luminosities, have opened the possibility of testing particle emission in the core of very hot white dwarfs, where neutrino processes are dominant. We use the available WDLFs from the Sloan Digital Sky Survey and the SuperCOSMOS Sky Survey to constrain the value of the neutrino magnetic dipole moment ($\\mu_\

  4. White Paper on the Status and Future of Ground-based Gamma-ray Astronomy

    E-Print Network [OSTI]

    Krawczynski, H; Byrum, K; Dermer, C; Dingus, B; Falcone, A; Kaaret, Philip; Krennrich, F; Pohl, M; Vasilev, V; Williams, D A

    2007-01-01T23:59:59.000Z

    In recent years, ground-based gamma-ray observatories have made a number of important astrophysical discoveries which have attracted the attention of the wider scientific community. The Division of Astrophysics of the American Physical Society has requested the preparation of a white paper on the status and future of ground-based gamma-ray astronomy to define the science goals of the future observatory, to determine the performance specifications, and to identify the areas of necessary technology development. In this contribution we give a brief overview of the activities of the current white paper team and invite the international community to contribute to the white paper.

  5. White Paper on the Status and Future of Ground-based Gamma-ray Astronomy

    E-Print Network [OSTI]

    H. Krawczynski; J. Buckley; K. Byrum; C. Dermer; B. Dingus; A. Falcone; P. Kaaret; F. Krennrich; M. Pohl; V. Vassiliev; D. A. Williams; for the White Paper Team

    2007-09-05T23:59:59.000Z

    In recent years, ground-based gamma-ray observatories have made a number of important astrophysical discoveries which have attracted the attention of the wider scientific community. The Division of Astrophysics of the American Physical Society has requested the preparation of a white paper on the status and future of ground-based gamma-ray astronomy to define the science goals of the future observatory, to determine the performance specifications, and to identify the areas of necessary technology development. In this contribution we give a brief overview of the activities of the current white paper team and invite the international community to contribute to the white paper.

  6. White Course White Course

    E-Print Network [OSTI]

    Thompson, Anne

    , The (Inset Map) Academic Activities G8 Academic Projects G8 Agricultural Administration E6 Agricultural Arena Softball Park) D8 Beaver Stadium D10 Beecher-Dock House H8 Benedict House H8 Bennett Family Center G812 Chemistry F5 Coal Utilization Lab G8 Computer Building E7 Corn Breeding Lab B11 Dairy Complex A9

  7. White Course White Course

    E-Print Network [OSTI]

    Thompson, Anne

    , The (Inset Map) Academic Activities G8 Academic Projects G8 Agricultural Administration E6 Agricultural Arena Softball Park) D8 Beaver Stadium D10 Beecher-Dock House H8 Benedict House H8 Bennett Family Center G8 G8 Computer Building E7 Corn Breeding Lab B11 Dairy Complex A9 Davey Lab F5 Daybridge Child Dev

  8. Type Ia supernovae from exploding oxygen-neon white dwarfs

    E-Print Network [OSTI]

    Marquardt, Kai S; Ruiter, Ashley J; Seitenzahl, Ivo R; Ohlmann, Sebastian T; Kromer, Markus; Pakmor, Ruediger; Roepke, Friedrich K

    2015-01-01T23:59:59.000Z

    The progenitor problem of Type Ia supernovae (SNe Ia) is still unsolved. Most of these events are thought to be explosions of carbon-oxygen (CO) white dwarfs (WDs), but for many of the explosion scenarios, particularly those involving the externally triggered detonation of a sub-Chandrasekhar mass WD (sub-M Ch WD), there is also a possibility of having an oxygen-neon (ONe) WD as progenitor. We simulate detonations of ONe WDs and calculate synthetic observables from these models. The results are compared with detonations in CO WDs of similar mass and observational data of SNe Ia. We perform hydrodynamic explosion simulations of detonations in initially hydrostatic ONe WDs for a range of masses below the Chandrasekhar mass (M Ch), followed by detailed nucleosynthetic postprocessing with a 384-isotope nuclear reaction network. The results are used to calculate synthetic spectra and light curves, which are then compared with observations of SNe Ia. We also perform binary evolution calculations to determine the nu...

  9. PULSATIONS IN HYDROGEN BURNING LOW-MASS HELIUM WHITE DWARFS

    SciTech Connect (OSTI)

    Steinfadt, Justin D. R. [Department of Physics, Broida Hall, University of California, Santa Barbara, CA 93106 (United States); Bildsten, Lars [Kavli Institute for Theoretical Physics and Department of Physics, Kohn Hall, University of California, Santa Barbara, CA 93106 (United States); Arras, Phil, E-mail: jdrs@physics.ucsb.ed, E-mail: bildsten@kitp.ucsb.ed, E-mail: arras@virginia.ed [Department of Astronomy, University of Virginia, P.O. Box 400325, Charlottesville, VA 22904 (United States)

    2010-07-20T23:59:59.000Z

    Helium core white dwarfs (WDs) with mass M {approx}< 0.20 M {sub sun} undergo several Gyr of stable hydrogen burning as they evolve. We show that in a certain range of WD and hydrogen envelope masses, these WDs may exhibit g-mode pulsations similar to their passively cooling, more massive carbon/oxygen core counterparts, the ZZ Cetis. Our models with stably burning hydrogen envelopes on helium cores yield g-mode periods and period spacings longer than the canonical ZZ Cetis by nearly a factor of 2. We show that core composition and structure can be probed using seismology since the g-mode eigenfunctions predominantly reside in the helium core. Though we have not carried out a fully nonadiabatic stability analysis, the scaling of the thermal time in the convective zone with surface gravity highlights several low-mass helium WDs that should be observed in search of pulsations: NLTT 11748, SDSS J0822+2753, and the companion to PSR J1012+5307. Seismological studies of these He core WDs may prove especially fruitful, as their luminosity is related (via stable hydrogen burning) to the hydrogen envelope mass, which eliminates one model parameter.

  10. Seismology of the Accreting White Dwarf in GW Lib

    E-Print Network [OSTI]

    Dean M. Townsley; Phil Arras; Lars Bildsten

    2004-05-07T23:59:59.000Z

    We present a first analysis of the g-mode oscillation spectrum for the white dwarf (WD) primary of GW Lib, a faint cataclysmic variable (CV). Stable periodicities have been observed from this WD for a number of years, but their interpretation as stellar pulsations has been hampered by a lack of theoretical models appropriate to an accreting WD. Using the results of Townsley and Bildsten, we construct accreting models for the observed effective temperature and approximate mass of the WD in GW Lib. We compute g-mode frequencies for a range of accreted layer masses, Macc, and long term accretion rates, . If we assume that the observed oscillations are from l=1 g-modes, then the observed periods are matched when M ~= 1.02 Msun, Macc ~= 0.31 x 10^-4 Msun and ~= 7.3 x 10^-11 Msun/yr. Much more sensitive observations are needed to discover more modes, after which we will be able to more accurately measure these parameters and constrain or measure the WD's rotation rate.

  11. White Dwarfs and Hot Subdwarfs as Seen from FUSE

    E-Print Network [OSTI]

    G. Fontaine; P. Chayer

    2004-11-03T23:59:59.000Z

    We present a small collection of FUSE spectra representative of the main spectral classes found in white dwarf stars. In addition, we also discuss another family of hot evolved stars, that of the hot subdwarfs. Both families belong to the chemically peculiar stars, and it is thought that a complex interplay of competing processes such as gravitational settling, ordinary diffusion, radiative levitation, weak stellar winds, and accretion is responsible for the rich variety of atmospheric compositions observed in those objects. FUSE is playing a key role in the current quest for establishing a coherent theory of the spectral evolution of these stars as it allows the determination of the patterns of heavy element abundances at a significantly higher level of accuracy than has been possible before on the basis of optical or UV observations. We also briefly present some fascinating FUV light curves of a handful of pulsating subdwarf B stars, thus illustrating the unique potential of FUSE for asteroseismological studies, a potential which has not been exploited yet.

  12. Mercury and cause of death in great white herons

    SciTech Connect (OSTI)

    Spalding, M.G.; Sundlof, S.F. (Univ. of Florida, Gainesville, FL (United States)); Djork, R.D.; Powell, G.V.N. (National Audobon Research, Tavernier, FL (United States))

    1994-10-01T23:59:59.000Z

    Mercury contamination is suspected to adversely affect wading birds in southern Florida. To determine the magnitude of contamination associated with cause of death we followed 3 adult and 19 juvenile radio-tagged great white herons (Ardea herodias occidentalis), recovered them soon after death, and determined liver mercury content and cause of death. Birds that died from acute causes had less (P < 0.001) mercury in their livers (geometric [bar x] [GM] = 1.77 ppm wet mass [wm], range 0.6-4.0 ppm, n = 9) than did those that died of chronic, often multiple, diseases (GM = 9.76 ppm, range 2.9-59.4 ppm, n = 13). Juvenile herons that migrated to mainland Florida accumulated more (P = 0.009) mercury in their livers than those that did not migrate. Kidney disease and gout were present in birds that died with >25 ppm wm liver mercury. Although detrimental to the health of wading birds, mercury contamination is presumably more detrimental to their reproductive efforts; therefore, an understanding of its ill effects is important in the management of these birds. 29 refs., 1 fig.

  13. Every interacting double white dwarf binary may merge

    E-Print Network [OSTI]

    Shen, Ken J

    2015-01-01T23:59:59.000Z

    Interacting double white dwarf binaries can give rise to a wide variety of astrophysical outcomes ranging from faint thermonuclear and Type Ia supernovae to the formation of neutron stars and stably accreting AM Canum Venaticorum systems. One key factor affecting the final outcome is whether mass transfer remains dynamically stable or instead diverges, leading to the tidal disruption of the donor and the merger of the binary. It is typically thought that for low ratios of the donor mass to the accretor mass, mass transfer remains stable, especially if accretion occurs via a disk. In this Letter, we examine disk-accreting binaries with extremely low mass ratios and find that the initial phase of hydrogen-rich mass transfer leads to a classical nova-like outburst on the accretor. Dynamical friction within the expanding nova shell shrinks the orbit and causes the mass transfer rate to increase dramatically above the accretor's Eddington limit, resulting in a binary merger. While further calculations are necessar...

  14. The Thermonuclear Explosion Of Chandrasekhar Mass White Dwarfs

    E-Print Network [OSTI]

    J. C. Niemeyer; S. E. Woosley

    1996-07-05T23:59:59.000Z

    The flame born in the deep interior of a white dwarf that becomes a Type Ia supernova is subject to several instabilities. We briefly review these instabilities and the corresponding flame acceleration. We discuss the conditions necessary for each of the currently proposed explosion mechanisms and the attendant uncertainties. A grid of critical masses for detonation in the range $10^7$ - $2 \\times 10^9$ g cm$^{-3}$ is calculated and its sensitivity to composition explored. Prompt detonations are physically improbable and appear unlikely on observational grounds. Simple deflagrations require some means of boosting the flame speed beyond what currently exists in the literature. ``Active turbulent combustion'' and multi-point ignition are presented as two plausible ways of doing this. A deflagration that moves at the ``Sharp-Wheeler'' speed, $0.1 g_{\\rm eff} t$, is calculated in one dimension and shows that a healthy explosion is possible in a simple deflagration if the front moves with the speed of the fastest floating bubbles. The relevance of the transition to the ``distributed burning regime'' is discussed for delayed detonations. No model emerges without difficulties, but detonation in the distributed regime is plausible, will produce intermediate mass elements, and warrants further study.

  15. White Bluffs Pickling Acid Cribs expedited response action proposal

    SciTech Connect (OSTI)

    Not Available

    1993-07-01T23:59:59.000Z

    The US Environmental Protection Agency (EPA) and Washington State Department of Ecology (Ecology) recommended in a letter dated March 4, 1992 (Attachment 1) that the US Department of Energy (DOE) prepare an expedited response action (ERA) for the White Bluffs Pickling Acid Cribs Site. The lead regulatory agency for this ERA is the EPA, with Ecology providing support. The goal of this ERA is to reduce the potential of any residual contaminant migration from the cribs to the soil column and groundwater. The cribs are the only waste site within the 100-IU-5 operable unit. Since the operable unit is surrounded by other waste units, tracing the potential groundwater contamination from the 100-IU-5 operable unit for this ERA would not be effective. Groundwater will be investigated with the 100-IU-2 operable unit. This ERA proposal presents the characterization data from the site investigations conducted in November of 1992. This information is evaluated to present the best method for reducing potential of contaminant migration from the disposal unit, ensuring both protection of human health and the environment. The ERA proposal will undergo a public review. EPA and Ecology will issue an Action Agreement Memorandum after comment resolution. This Action Memorandum may authorize implementation of the ERA proposal`s recommended alternative. The ERA may also provide a No Further Action Interim Record of Decision (IROD) of the 100-IU-5 operable unit.

  16. COSMOLOGICAL FAST RADIO BURSTS FROM BINARY WHITE DWARF MERGERS

    SciTech Connect (OSTI)

    Kashiyama, Kazumi; Mészáros, Peter [Department of Astronomy and Astrophysics, Department of Physics, Center for Particle and Gravitational Astrophysics, Pennsylvania State University, University Park, PA 16802 (United States)] [Department of Astronomy and Astrophysics, Department of Physics, Center for Particle and Gravitational Astrophysics, Pennsylvania State University, University Park, PA 16802 (United States); Ioka, Kunihito, E-mail: kzk15@psu.edu, E-mail: nnp@psu.edu, E-mail: kunihito.ioka@kek.jp [Theory Center, Institute of Particle and Nuclear Studies, KEK, Department of Particle and Nuclear Physics, the Graduate University for Advanced Studies (Sokendai), Tsukuba 305-0801 (Japan)] [Theory Center, Institute of Particle and Nuclear Studies, KEK, Department of Particle and Nuclear Physics, the Graduate University for Advanced Studies (Sokendai), Tsukuba 305-0801 (Japan)

    2013-10-20T23:59:59.000Z

    Recently, Thornton et al. reported the detection of four fast radio bursts (FRBs). The dispersion measures indicate that the sources of these FRBs are at cosmological distance. Given the large full sky event rate ?10{sup 4} sky{sup –1} day{sup –1}, the FRBs are a promising target for multi-messenger astronomy. Here we propose double degenerate, binary white-dwarf (WD) mergers as the source of FRBs, which are produced by coherent emission from the polar region of a rapidly rotating, magnetized massive WD formed after the merger. The basic characteristics of the FRBs, such as the energetics, emission duration and event rate, can be consistently explained in this scenario. As a result, we predict that some FRBs can accompany type Ia supernovae (SNe Ia) or X-ray debris disks. Simultaneous detection could test our scenario and probe the progenitors of SNe Ia, and moreover would provide a novel constraint on the cosmological parameters. We strongly encourage future SN and X-ray surveys that follow up FRBs.

  17. Development and initial assessment of Texas Cooperative Extension's white-tailed dear management module 

    E-Print Network [OSTI]

    Bedgood, Mark Andrew

    2005-02-17T23:59:59.000Z

    The purpose of this study was to evaluate the development and initial use of Texas Cooperative Extension?s (TCE) White-tailed Deer Management Module (WDMM) delivered over the Internet. The results of this study will ...

  18. Probing the brain’s white matter with diffusion MRI and a tissue dependent diffusion model 

    E-Print Network [OSTI]

    Piatkowski, Jakub Przemyslaw

    2014-06-27T23:59:59.000Z

    While diffusion MRI promises an insight into white matter microstructure in vivo, the axonal pathways that connect different brain regions together can only partially be segmented using current methods. Here we present ...

  19. Found: The missing blue opacity in atmosphere models of cool hydrogen white dwarfs

    E-Print Network [OSTI]

    P. M. Kowalski; D. Saumon

    2006-09-26T23:59:59.000Z

    We investigate the importance of the far red wing of the Lyman $ \\alpha$ line of hydrogen in the atmospheres of cool white dwarfs of pure hydrogen composition. We find that this absorption process dominates all important sources of opacity in the blue part of the optical spectrum of these stars. Our successful fits to the spectra of cool DA/DC white dwarfs indicate that the far red wing of the $\\rm Ly \\alpha$ line is the source of opacity that had been missing in the models. The observed sequence of cool white dwarfs in color-color diagrams is very well reproduced by our new pure hydrogen atmosphere models, suggesting that the atmospheric composition of the coolest DC white dwarfs must be revisited.

  20. Racial and Ethnic Identities of Mexican-White Couples in Texas

    E-Print Network [OSTI]

    Guillen, Jennifer 1983-

    2010-11-03T23:59:59.000Z

    This thesis is a result of qualitative research conducted with individuals in interracial, Mexican-White couples in Southeast, Texas. This study calls into question the ways in which individuals in these relationships self-identify and how...

  1. Racial and Ethnic Identities Among Mexican-White Couples in Texas

    E-Print Network [OSTI]

    Guillen, Jennifer Cassandra

    2014-09-02T23:59:59.000Z

    This qualitative study explores the complexities of racial and ethnic identification Mexicans in romantic relationships with whites in four locations: Brazos County, San Antonio, Austin, and Houston. Using data from 90 in-depth, semi...

  2. An Investigation into the Perception of Color under LED White Composite Spectra with Modulated Color Rendering

    E-Print Network [OSTI]

    O'Reilly, Una-May

    emitting diodes, LEDs. We examined seven LED white composite spectra with different color rendering of a pilot study that evaluates the perceptual impact of modulation of color rendering using multi-chip light

  3. Might Carbon-Atmosphere White Dwarfs Harbour a New Type of Pulsating Star?

    E-Print Network [OSTI]

    G. Fontaine; P. Brassard; P. Dufour

    2008-03-14T23:59:59.000Z

    In the light of the recent and unexpected discovery of a brand new type of white dwarfs, those with carbon-dominated atmospheres, we examine the asteroseismological potential of such stars. The motivation behind this is based on the observation that past models of carbon-atmosphere white dwarfs have partially ionized outer layers that bear strong resemblance with those responsible for mode excitation in models of pulsating DB (helium-atmosphere) and pulsating DA (hydrogen-atmosphere) white dwarfs. Our exciting main result is that, given the right location in parameter space, some carbon-atmosphere white dwarfs are predicted to show pulsational instability against gravity modes. We are eagerly waiting the results of observational searches for luminosity variations in these stars.

  4. Join a White House Google+ Hangout with Energy Secretary Moniz & EPA Administrator McCarthy

    Broader source: Energy.gov [DOE]

    Join us on Monday, May 19, 2014, at 1 p.m. ET for a live White House Google+ Hangout with Secretary Moniz and EPA Administrator Gina McCarthy about the state of our climate.

  5. Health in black and white : debates on racial and ethnic health disparities in Brazil

    E-Print Network [OSTI]

    Pagano, Anna

    2011-01-01T23:59:59.000Z

    Valle 1985 Updating the Cost of Not Being White in Brazil.Race, class, and power in Brazil. P. -M. Fontaine, ed. Pp.Ideas and Social Policy in Brazil, 1870-1940. In The Idea of

  6. White House Solar Panels Are a Symbol of Solar's Progress | Department...

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

    Solar Panels Are a Symbol of Solar's Progress White House Solar Panels Are a Symbol of Solar's Progress May 13, 2014 - 12:02pm Addthis An error occurred. Unable to execute...

  7. Testing Fundamental Particle Physics with the Galactic White Dwarf Luminosity Function

    E-Print Network [OSTI]

    Marcelo M. Miller Bertolami; Brenda E. Melendez; Leandro G. Althaus; Jordi Isern

    2014-10-07T23:59:59.000Z

    Recent determinations of the white dwarf luminosity function (WDLF) from very large surveys have extended our knowledge of the WDLF to very high luminosities. It has been shown that the shape of the luminosity function of white dwarfs (WDLF) is a powerful tool to test the possible properties and existence of fundamental weakly interacting subelectronvolt particles. This, together with the availability of new full evolutionary white dwarf models that are reliable at high luminosities, have opened the possibility of testing particle emission in the core of very hot white dwarfs. We use the available WDLFs from the Sloan Digital Sky Survey and the SuperCOSMOS Sky Survey to constrain the values of the neutrino magnetic dipole moment ($\\mu_\

  8. A Possible Brown Dwarf Companion to the White Dwarf GD1400

    E-Print Network [OSTI]

    J. Farihi; M. Christopher

    2004-07-01T23:59:59.000Z

    An unresolved, likely L dwarf companion to the DA white dwarf GD1400 is reported. This would be only the second such system known, discovered 17 years after the prototype L dwarf, GD165B, was determined to be a companion to a white dwarf. Photometric observations and model predicted stellar parameters of the well studied white dwarf primary indicate that GD1400B has $J-K\\ga2.0$ and $M_K=12.13$ mag. If correct, this would place GD1400B at spectral type L6, and it would be the lowest luminosity unevolved companion known to a white dwarf, and thus a definite brown dwarf. However, a low resolution Keck NIRSPEC $2.1-2.4\\mu$m spectrum may not be consistent with known L dwarfs. Uncertainties in classification remain until the binary is resolved or a trigonometric parallax is measured.

  9. Assessment of the urban public's knowledge of white-tailed deer management in two Texas communities

    E-Print Network [OSTI]

    Alderson, Jessica Lynn

    2009-05-15T23:59:59.000Z

    Urbanization throughout much of Texas has resulted in diminished wildlife habitat, resulting from fragmented landscapes. Several previous studies addressed the public’s attitudes concerning the most acceptable white-tailed deer management techniques...

  10. Results of CC Follow-Up in the G. Rollie White Building

    E-Print Network [OSTI]

    Liu, C.; Turner, W. D.; Claridge, D. E.; Deng, S.; Bruner, H. L.

    2002-01-01T23:59:59.000Z

    of energy consumption of G. Rollie White Coliseum included energy consumption and HVAC system operation data analysis, measurement on HVAC systems, and examination of the control program. HVAC hardware problems, HVAC operation problems, and control program...

  11. KOI 1224: A FOURTH BLOATED HOT WHITE DWARF COMPANION FOUND WITH KEPLER

    E-Print Network [OSTI]

    Breton, R. P.

    We present an analysis and interpretation of the Kepler binary system KOI 1224. This is the fourth binary found with Kepler that consists of a thermally bloated, hot white dwarf in a close orbit with a more or less normal ...

  12. Diffusion imaging of cerebral white matter in persons who stutter: evidence for network-level anomalies

    E-Print Network [OSTI]

    Cai, Shanqing

    Deficits in brain white matter have been a main focus of recent neuroimaging studies on stuttering. However, no prior study has examined brain connectivity on the global level of the cerebral cortex in persons who stutter ...

  13. Technical White Paper Writers: Ann Bachrach, Darmadi Komo, Gopal Ashok, Joanne Hodgins, Oliver Chiu, Sabrena

    E-Print Network [OSTI]

    Chaudhuri, Surajit

    1 Technical White Paper Writers: Ann Bachrach, Darmadi Komo, Gopal Ashok, Joanne Hodgins, Oliver..............................................................................................16 Cloud on Your Terms commodity hardware, demand for accessible insights, and new form factors such as the cloud, appliances

  14. Dkar yol nang Paean 8, The High Blue Sky and the Low White Clouds

    E-Print Network [OSTI]

    Rdo rje rgyal

    ??????? Tape No. / Track / Item No. Dkar yol nang Paean 8.WAV Length of track 00:03:05 Related tracks (include description/relationship if appropriate) Title of track The High Blue Sky and the Low White Clouds ??????? ?...

  15. Light extraction enhanced white light-emitting diodes with multi-layered phosphor configuration

    E-Print Network [OSTI]

    You, Jiun Pyng; Tran, Nguyen T.; Shi, Frank G.

    2010-01-01T23:59:59.000Z

    and J. K. Kim, “Solid-state light sources getting smart,”power phosphor-converted light-emitting diodes based on III-for phosphor- based white-light-emitting diodes,” Appl.

  16. Spiral Disk Instability Can Drive Thermonuclear Explosions in Binary White Dwarf Mergers

    E-Print Network [OSTI]

    Kashyap, Rahul; García-Berro, Enrique; Aznar-Siguán, Gabriela; Ji, Suoqing; Lorén-Aguilar, Pablo

    2015-01-01T23:59:59.000Z

    Thermonuclear, or Type Ia supernovae (SNe Ia), originate from the explosion of carbon-oxygen white dwarfs, and serve as standardizable cosmological candles. However, despite their importance, the nature of the progenitor systems which give rise to SNe Ia has not been hitherto elucidated. Observational evidence favors the double-degenerate channel, in which merging white dwarf binaries lead to SNe Ia. Furthermore, significant discrepancies exist between observations and theory, and to date, there has been no self-consistent merger model which yields a SNe Ia. Here we show that a spiral mode instability in the accretion disk formed during a binary white dwarf merger leads to a detonation on a dynamical timescale. This mechanism sheds light on how white dwarf mergers may frequently yield SNe Ia.

  17. Comparative foraging ecology of white-tailed deer and Angora goats on the Edwards Plateau, Texas

    E-Print Network [OSTI]

    Jacobson, Roy Arthur

    1996-01-01T23:59:59.000Z

    This study investigated how seasonal patterns in forage abundance and quality influenced the feeding behavior of white-tailed deer ( Odocolieus virginianus) and Angora goats; two similar-sized ungulates with different digestive morphologies. I...

  18. White-tailed deer population dynamics and management on the Lyndon B. Johnson Space Center

    E-Print Network [OSTI]

    Whisenant, Shane Weston

    2004-11-15T23:59:59.000Z

    White-tailed deer (Odocoileus virginianus) numbers on the National Aeronautics and Space Administration's (NASA) Johnson Space Center (JSC) in Houston, Texas have increased in recent years and are a cause of urban-related accidents (e.g., deer...

  19. IMPROVING FLUID REGISTRATION THROUGH WHITE MATTER SEGMENTATION Yi-Yu Chou1

    E-Print Network [OSTI]

    Thompson, Paul

    IMPROVING FLUID REGISTRATION THROUGH WHITE MATTER SEGMENTATION Yi-Yu Chou1 , Natasha Leporé1 J. Wright3 , Arthur W. Toga1 , Paul M. Thompson1 1 Laboratory of Neuro Imaging, UCLA Dept

  20. IMPROVING FLUID REGISTRATION THROUGH WHITE MATTER SEGMENTATION IN A TWIN STUDY DESIGN

    E-Print Network [OSTI]

    Thompson, Paul

    IMPROVING FLUID REGISTRATION THROUGH WHITE MATTER SEGMENTATION IN A TWIN STUDY DESIGN Yi-Yu Chou1 J. Wright3 , Arthur W. Toga1 , Paul M. Thompson1 1 Laboratory of Neuro Imaging, UCLA Dept

  1. HTS applications

    E-Print Network [OSTI]

    Noe, M; Fietz, W H; Goldacker, W; Schneider, Th

    2009-01-01T23:59:59.000Z

    Superconductivity has found many attractive applications in medicine, science, power systems, engineering, transport and electronics. One of the most prominent applications of superconductivity are superconducting magnets e.g. MRI magnets, NMR magnets, accelerator magnets, and magnets for fusion; most applications still use low temperature superconductors. Since the discovery of high temperature superconductivity (HTS) in 1986 there has been a tremendous progress in R&D of HTS material, wires and applications. Especially for power system applications, HTS offers considerable economic benefits. Many HTS demonstrator or prototype applications have been built and successfully tested, and some HTS applications like cables and superconducting fault current limiters seem very close to commercialisation. This paper gives an overview about the present and future HTS applications in power applications, high field magnets and current leads. In addition results of the Forschungszentrum Karlsruhe program to develop H...

  2. Simulation of optical absorption and scattering in gel and egg white 

    E-Print Network [OSTI]

    Kumbhani, Sujit Sumant

    1992-01-01T23:59:59.000Z

    with the Argon laser. The samples were selected and grouped on the basis of their transmission values. With increasing absorption and scattering, the volume of the coagulum formed decreased. Also, the time of onset of ablation varied with similar changes... the effects of optical properties on neighboring tissues. For all the cases studied, no charring of the egg white was seen for the set time of exposures. Plain egg white, which normally shows no reaction to the Argon laser light, coagulated due...

  3. Material system for tailorable white light emission and method for making thereof

    DOE Patents [OSTI]

    Smith, Christine A. (Livermore, CA); Lee, Howard W. H. (Fremont, CA)

    2009-05-19T23:59:59.000Z

    A method of processing a composite material to tailor white light emission of the resulting composite during excitation. The composite material is irradiated with a predetermined power and for a predetermined time period to reduce the size of a plurality of nanocrystals and the number of a plurality of traps in the composite material. By this irradiation process, blue light contribution from the nanocrystals to the white light emission is intensified and red and green light contributions from the traps are decreased.

  4. Race Appropriate Sports: Is Golf Considered More Appropriate for Whites Compared to Racial Minorities?

    E-Print Network [OSTI]

    Rosselli, Anthony C.

    2012-10-19T23:59:59.000Z

    RACE APPROPRIATE SPORTS: IS GOLF CONSIDERED MORE APPROPRIATE FOR WHITES COMPARED TO RACIAL MINORITIES? A Thesis by ANTHONY C. ROSSELLI Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment... of the requirements for the degree of MASTER OF SCIENCE August 2011 Major Subject: Sports Management RACE APPROPRIATE SPORTS: IS GOLF CONSIDERED MORE APPROPRIATE FOR WHITES COMPARED TO RACIAL MINORITIES? A Thesis by ANTHONY C. ROSSELLI...

  5. Pollution of single white dwarfs by accretion of many small asteroids

    E-Print Network [OSTI]

    M. Jura

    2008-02-27T23:59:59.000Z

    Extrapolating from the solar system's asteroid belt, we propose that externally-contaminated white dwarfs without an infrared excess may be experiencing continuous accretion of gas-phase material that ultimately is derived from the tidal destruction of multiple small asteroids. If this scenario is correct, then observations of metal-polluted white dwarfs may lead to determining the bulk elemental compositions of ensembles of extrasolar minor planets.

  6. Simulation of optical absorption and scattering in gel and egg white

    E-Print Network [OSTI]

    Kumbhani, Sujit Sumant

    1992-01-01T23:59:59.000Z

    with the Argon laser. The samples were selected and grouped on the basis of their transmission values. With increasing absorption and scattering, the volume of the coagulum formed decreased. Also, the time of onset of ablation varied with similar changes... the effects of optical properties on neighboring tissues. For all the cases studied, no charring of the egg white was seen for the set time of exposures. Plain egg white, which normally shows no reaction to the Argon laser light, coagulated due...

  7. Material system for tailorable white light emission and method for making thereof

    DOE Patents [OSTI]

    Smith, Christine A.; Lee, Howard W.

    2004-08-10T23:59:59.000Z

    A method of processing a composite material to tailor white light emission of the resulting composite during excitation. The composite material is irradiated with a predetermined power and for a predetermined time period to reduce the size of a plurality of nanocrystals and the number of a plurality of traps in the composite material. By this irradiation process, blue light contribution from the nanocrystals to the white light emission is intensified and red and green light contributions from the traps are decreased.

  8. Nutritional Contribution of Phytoplankton to the Pacific White Shrimp Litopenaeus vannamei

    E-Print Network [OSTI]

    Sanchez Corrales, Dagoberto Raul

    2012-07-16T23:59:59.000Z

    NUTRITIONAL CONTRIBUTION OF PHYTOPLANKTON TO THE PACIFIC WHITE SHRIMP LITOPENAEUS VANNAMEI A Dissertation by DAGOBERTO RAUL SANCHEZ CORRALES Submitted to the Office of Graduate Studies of Texas A&M University in partial... 2012 Dagoberto Raul Sanchez Corrales NUTRITIONAL CONTRIBUTION OF PHYTOPLANKTON TO THE PACIFIC WHITE SHRIMP LITOPENAEUS VANNAMEI A Dissertation by DAGOBERTO RAUL SANCHEZ CORRALES Submitted to the Office of Graduate Studies of Texas A...

  9. Isolation and characterization of microsatellite markers in white-tailed deer

    E-Print Network [OSTI]

    DeWoody, James Andrew

    1994-01-01T23:59:59.000Z

    ISOLATION AND CHARACTERIZATION OF MICROSATELLITE MARKERS IN WHITE-TAILED DEER A Thesis by JAMES ANDREW DEWOODY Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree... of MASTER OF SCIENCE December 1994 Major Subject: Genetics ISOLATION AND CHARACTERIZATION OF MICROSATELLITE MARRERS IN WHITE-TAILED DEER A Thesis JAMES ANDREW DEWOODY Submitted to Texas A&M University in partial fulfillment of the requirements...

  10. Development and initial assessment of Texas Cooperative Extension's white-tailed dear management module

    E-Print Network [OSTI]

    Bedgood, Mark Andrew

    2005-02-17T23:59:59.000Z

    DEVELOPMENT AND INITIAL ASSESSMENT OF TEXAS COOPERATIVE EXTENSION?S WHITE-TAILED DEER MANAGEMENT MODULE A Thesis by MARK ANDREW BEDGOOD Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment... of the requirements for the degree of MASTER OF SCIENCE December 2004 Major Subject: Agricultural Education DEVELOPMENT AND INITIAL ASSESSMENT OF TEXAS COOPERATIVE EXTENSION?S WHITE-TAILED DEER MANAGEMENT MODULE A Thesis by MARK ANDREW...

  11. THE HABITABILITY AND DETECTION OF EARTH-LIKE PLANETS ORBITING COOL WHITE DWARFS

    SciTech Connect (OSTI)

    Fossati, L.; Haswell, C. A.; Patel, M. R.; Busuttil, R. [Department of Physical Sciences, Open University, Walton Hall, Milton Keynes MK7 6AA (United Kingdom); Bagnulo, S. [Armagh Observatory, College Hill, Armagh BT61 9DG (United Kingdom); Kowalski, P. M. [GFZ German Research Centre for Geosciences, Telegrafenberg, D-14473 Potsdam (Germany); Shulyak, D. V. [Institute of Astrophysics, Georg-August-University, Friedrich-Hund-Platz 1, D-37077 Goettingen (Germany); Sterzik, M. F., E-mail: l.fossati@open.ac.uk, E-mail: C.A.Haswell@open.ac.uk, E-mail: M.R.Patel@open.ac.uk, E-mail: r.busuttil@open.ac.uk, E-mail: sba@arm.ac.uk, E-mail: kowalski@gfz-potsdam.de, E-mail: denis.shulyak@gmail.com, E-mail: msterzik@eso.org [European Southern Observatory, Casilla 19001, Santiago 19 (Chile)

    2012-09-20T23:59:59.000Z

    Since there are several ways planets can survive the giant phase of the host star, we examine the habitability and detection of planets orbiting white dwarfs. As a white dwarf cools from 6000 K to 4000 K, a planet orbiting at 0.01 AU would remain in the continuous habitable zone (CHZ) for {approx}8 Gyr. We show that photosynthetic processes can be sustained on such planets. The DNA-weighted UV radiation dose for an Earth-like planet in the CHZ is less than the maxima encountered on Earth, and hence non-magnetic white dwarfs are compatible with the persistence of complex life. Polarization due to a terrestrial planet in the CHZ of a cool white dwarf (CWD) is 10{sup 2} (10{sup 4}) times larger than it would be in the habitable zone of a typical M-dwarf (Sun-like star). Polarimetry is thus a viable way to detect close-in rocky planets around white dwarfs. Multi-band polarimetry would also allow us to reveal the presence of a planet atmosphere, providing a first characterization. Planets in the CHZ of a 0.6 M{sub Sun} white dwarf will be distorted by Roche geometry, and a Kepler-11d analog would overfill its Roche lobe. With current facilities a super-Earth-sized atmosphereless planet is detectable with polarimetry around the brightest known CWD. Planned future facilities render smaller planets detectable, in particular by increasing the instrumental sensitivity in the blue.

  12. Impact of impingement on the Hudson River white perch population. Final report

    SciTech Connect (OSTI)

    Barnthouse, L.W.; Van Winkle, W.; Kirk, B.L.; Vaughan, D.S.

    1982-02-01T23:59:59.000Z

    This report summarizes a series of analyses of the magnitude and biological significance of the impingement of white perch at the Indian Point Nuclear Generating Station and other Hudson River power plants. Included in these analyses were evaluations of: (1) two independent lines of evidence relating to the magnitude of impingement impacts on the Hudson River white perch population; (2) the additional impact caused by entrainment of white perch; (3) data relating to density-dependent growth among young-of-the-year white perch; (4) the feasibility of performing population-level analyses of impingement impacts on the white perch populations of Chesapeake Bay and the Delaware River; and (5) the feasibility of using simple food chain and food web models to evaluate community-level effects of impingement and entrainment. Estimated reductions in the abundances of the 1974 and 1975 white perch year classes, caused by impingement and entrainment, were high enough that the possibility of adverse long-term effects cannot be excluded.

  13. Testing White Dwarf Crystallization Theory with Asteroseismology of the Massive Pulsating DA Star BPM 37093

    E-Print Network [OSTI]

    T. S. Metcalfe; M. H. Montgomery; A. Kanaan

    2004-03-09T23:59:59.000Z

    It was predicted more than 40 years ago that the cores of the coolest white dwarf stars should eventually crystallize. This effect is one of the largest sources of uncertainty in white dwarf cooling models, which are now routinely used to estimate the ages of stellar populations in both the Galactic disk and the halo. We are attempting to minimize this source of uncertainty by calibrating the models, using observations of pulsating white dwarfs. In a typical mass white dwarf model, crystallization does not begin until the surface temperature reaches 6000-8000 K. In more massive white dwarf models the effect begins at higher surface temperatures, where pulsations are observed in the ZZ Ceti (DAV) stars. We use the observed pulsation periods of BPM 37093, the most massive DAV white dwarf presently known, to probe the interior and determine the size of the crystallized core empirically. Our initial exploration of the models strongly suggests the presence of a solid core containing about 90% of the stellar mass, which is consistent with our theoretical expectations.

  14. White Dwarf Heating and Subsequent Cooling in Dwarf Nova Outbursts

    E-Print Network [OSTI]

    Anthony L. Piro; Phil Arras; Lars Bildsten

    2005-03-30T23:59:59.000Z

    We follow the time dependent thermal evolution of a white dwarf (WD) undergoing sudden accretion in a dwarf nova outburst, using both simulations and analytic estimates. The post-outburst lightcurve clearly separates into early times when the WD flux is high, and late times when the flux is near the quiescent level. The break between these two regimes, occurring at a time of order the outburst duration, corresponds to a thermal diffusion wave reaching the base of the freshly accreted layer. Our principal result is that long after the outburst, the fractional flux perturbation about the quiescent flux decays as a power law with time (and {\\it not} as an exponential). We use this result to construct a simple fitting formula that yields estimates for both the quiescent flux and the accreted column, i.e. the total accreted mass divided by WD surface area. The WD mass is not well constrained by the late time lightcurve alone, but it can be inferred if the accreted mass is known from observations. We compare our work with the well-studied outburst of WZ Sge, finding that the cooling is well described by our model, giving an effective temperature $T_{\\rm eff}=14,500 {\\rm K}$ and accreted column $\\Delta y\\approx10^6 {\\rm g cm^{-2}}$, in agreement with the modeling of Godon et al. To reconcile this accreted column with the accreted mass inferred from the bolometric accretion luminosity, a large WD mass $\\gtrsim1.1M_\\odot$ is needed. Our power law result is a valuable tool for making quick estimates of the outburst properties. We show that fitting the late time lightcurve with this formula yields a predicted column within 20% of that estimated from our full numerical calculations.

  15. White phosphorus pits focused feasibility study final July 2007.

    SciTech Connect (OSTI)

    Davis, B.; Martino, L.

    2007-08-21T23:59:59.000Z

    The White Phosphorus Burning Pits (WPP) Area of Concern (AOC) is a site of about 5.5 acres (2.2 ha) located in the J-Field Study Area, in the Edgewood Area of Aberdeen Proving Ground (APG), Maryland (Figure 1.1). Considerable information about the WPP exists as a result of efforts to characterize the hazards associated with J-Field. Contamination in the J-Field Study Area was first detected during an environmental survey of the APG Edgewood Area conducted in 1977 and 1978 (Nemeth et al. 1983) by the U.S. Army Toxic and Hazardous Materials Agency (USATHAMA; predecessor to the U.S. Army Environmental Center). As part of a subsequent USATHAMA environmental survey, 11 wells were installed and sampled at J-Field (three of them at the WPP) (Nemeth 1989). Contamination was also detected in 1983 during a munitions disposal survey conducted by Princeton Aqua Science (1984). The Princeton Aqua Science investigation involved installing and sampling nine wells (four at the WPP) and collecting and analyzing surficial and deep composite soil samples (including samples from the WPP area). In 1986, the U.S. Environmental Protection Agency (EPA) issued a Resource Conservation and Recovery Act (RCRA) Permit (MD3-21-002-1355) requiring a post-wide RCRA Facility Assessment (RFA) and a hydrogeologic assessment of J-Field. In 1987, the U.S. Geological Survey (USGS) began a two-phase hydrogeologic assessment in which data were collected to model groundwater flow at J-Field. Soil-gas investigations were conducted, several well clusters were installed (four at the WPP), a groundwater flow model was developed, and groundwater and surface water monitoring programs were established that continue today. The results of the USGS study were published by Hughes (1993).

  16. Type Ia supernovae from merging white dwarfs. I. Prompt detonations

    SciTech Connect (OSTI)

    Moll, R.; Woosley, S. E. [Department of Astronomy and Astrophysics, University of California, Santa Cruz, CA 95064 (United States); Raskin, C.; Kasen, D. [Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720 (United States)

    2014-04-20T23:59:59.000Z

    Merging white dwarfs are a possible progenitor of Type Ia supernovae (SNe Ia). Numerical models suggest that a detonation might be initiated before the stars have coalesced to form a single compact object. Here we study such prompt detonations by means of numerical simulations, modeling the disruption and nucleosynthesis of the stars until the ejecta reach the coasting phase, and generating synthetic light curves and spectra. Three models are considered with primary masses 0.96 M {sub ?}, 1.06 M {sub ?}, and 1.20 M {sub ?}. Of these, the 0.96 M {sub ?} dwarf merging with a 0.81 M {sub ?} companion, with an {sup 56}Ni yield of 0.58 M {sub ?}, is the most promising candidate for reproducing common SNe Ia. The more massive mergers produce unusually luminous SNe Ia with peak luminosities approaching those attributed to 'super-Chandrasekhar' mass SNe Ia. While the synthetic light curves and spectra of some of the models resemble observed SNe Ia, the significant asymmetry of the ejecta leads to large orientation effects. The peak bolometric luminosity varies by more than a factor of two with the viewing angle, and the velocities of the spectral absorption features are lower when observed from angles where the light curve is brightest. The largest orientation effects are seen in the ultraviolet, where the flux varies by more than an order of magnitude. The set of three models roughly obeys a width-luminosity relation, with the brighter light curves declining more slowly in the B band. Spectral features due to unburned carbon from the secondary star are also seen in some cases.

  17. Simulation of contaminated sediment transport in White Oak Creek basin

    SciTech Connect (OSTI)

    Bao, Y.; Clapp, R.B.; Brenkert, A.L. [Oak Ridge National Lab., TN (United States); Moore, T.D. [Department of Civil and Environmental Engineering, University of Tennessee, Knoxville, TN (United States); Fontaine, T.A. [Department of Civil and Environmental Engineering, South Dakota School of Mines and Technology, Rapid City, SD (United States)

    1995-12-31T23:59:59.000Z

    This paper presents a systematic approach to management of the contaminated sediments in the White Oak Creek watershed at Oak Ridge National Laboratory near Oak Ridge, Tennessee. The primary contaminant of concern is radioactive cesium-137 ({sup 137}Cs), which binds to soil and sediment particles. The key components in the approach include an intensive sampling and monitoring system for flood events; modeling of hydrological processes, sediment transport, and contaminant flux movement; and a decision framework with a detailed human health risk analysis. Emphasis is placed on modeling of watershed rainfall-runoff and contaminated sediment transport during flooding periods using the Hydrologic Simulation Program- Fortran (HSPF) model. Because a large number of parameters are required in HSPF modeling, the major effort in the modeling process is the calibration of model parameters to make simulation results and measured values agree as closely as possible. An optimization model incorporating the concepts of an expert system was developed to improve calibration results and efficiency. Over a five-year simulation period, the simulated flows match the observed values well. Simulated total amount of sediment loads at various locations during storms match with the observed values within a factor of 1.5. Simulated annual releases of {sup 137}Cs off-site locations match the data within a factor of 2 for the five-year period. The comprehensive modeling approach can provide a valuable tool for decision makers to quantitatively analyze sediment erosion, deposition, and transport; exposure risk related to radionuclides in contaminated sediment; and various management strategies.

  18. BioethanolBioethanol Fermentation withFermentation with MucorMucor indicusindicus onon a White Clover/Rye grass Substratea White Clover/Rye grass Substrate

    E-Print Network [OSTI]

    BioethanolBioethanol Fermentation withFermentation with MucorMucor indicusindicus onon a White%), hemicellulose is a main sugar component (35%) in clover grass [1]. For an economical bioethanol production both]. As a new approach in bioethanol production, the fungus Mucor is in this study examined for its

  19. TOWARD A SPECTROSCOPIC CENSUS OF WHITE DWARFS WITHIN 40 pc OF THE SUN

    SciTech Connect (OSTI)

    Limoges, M.-M.; Bergeron, P. [Departement de Physique, Universite de Montreal, C.P. 6128, Succ. Centre-Ville, Montreal, Quebec H3C 3J7 (Canada); Lepine, S., E-mail: limoges@astro.umontreal.ca, E-mail: bergeron@astro.umontreal.ca, E-mail: lepine@amnh.org [Department of Astrophysics, Division of Physical Sciences, American Museum of Natural History, Central Park West at 79th Street, New York, NY 1002 (United States)

    2013-05-15T23:59:59.000Z

    We present the preliminary results of a survey aimed at significantly increasing the range and completeness of the local census of spectroscopically confirmed white dwarfs. The current census of nearby white dwarfs is reasonably complete only to about 20 pc of the Sun, a volume that includes around 130 white dwarfs, a sample too small for detailed statistical analyses. This census is largely based on follow-up investigations of stars with very large proper motions. We describe here the basis of a method that will lead to a catalog of white dwarfs within 40 pc of the Sun and north of the celestial equator, thus increasing by a factor of eight the extent of the northern sky census. White dwarf candidates are identified from the SUPERBLINK proper motion database, allowing us to investigate stars down to a proper motion limit {mu} > 40 mas yr{sup -1}, while minimizing the kinematic bias for nearby objects. The selection criteria and distance estimates are based on a combination of color-magnitude and reduced proper motion diagrams. Our follow-up spectroscopic observation campaign has so far uncovered 193 new white dwarfs, among which we identify 127 DA (including 9 DA+dM and 4 magnetic), 1 DB, 56 DC, 3 DQ, and 6 DZ stars. We perform a spectroscopic analysis on a subsample of 84 DAs, and provide their atmospheric parameters. In particular, we identify 11 new white dwarfs with spectroscopic distances within 25 pc of the Sun, including five candidates to the D < 20 pc subset.

  20. Radionuclide Inventory Distribution Project Data Evaluation and Verification White Paper

    SciTech Connect (OSTI)

    NSTec Environmental Restoration

    2010-05-17T23:59:59.000Z

    Testing of nuclear explosives caused widespread contamination of surface soils on the Nevada Test Site (NTS). Atmospheric tests produced the majority of this contamination. The Radionuclide Inventory and Distribution Program (RIDP) was developed to determine distribution and total inventory of radionuclides in surface soils at the NTS to evaluate areas that may present long-term health hazards. The RIDP achieved this objective with aerial radiological surveys, soil sample results, and in situ gamma spectroscopy. This white paper presents the justification to support the use of RIDP data as a guide for future evaluation and to support closure of Soils Sub-Project sites under the purview of the Federal Facility Agreement and Consent Order. Use of the RIDP data as part of the Data Quality Objective process is expected to provide considerable cost savings and accelerate site closures. The following steps were completed: - Summarize the RIDP data set and evaluate the quality of the data. - Determine the current uses of the RIDP data and cautions associated with its use. - Provide recommendations for enhancing data use through field verification or other methods. The data quality is sufficient to utilize RIDP data during the planning process for site investigation and closure. Project planning activities may include estimating 25-millirem per industrial access year dose rate boundaries, optimizing characterization efforts, projecting final end states, and planning remedial actions. In addition, RIDP data may be used to identify specific radionuclide distributions, and augment other non-radionuclide dose rate data. Finally, the RIDP data can be used to estimate internal and external dose rates. The data quality is sufficient to utilize RIDP data during the planning process for site investigation and closure. Project planning activities may include estimating 25-millirem per industrial access year dose rate boundaries, optimizing characterization efforts, projecting final end states, and planning remedial actions. In addition, RIDP data may be used to identify specific radionuclide distributions, and augment other non-radionuclide dose rate data. Finally, the RIDP data can be used to estimate internal and external dose rates.

  1. Making Time-stepped Applications Tick in the Cloud Tao Zou, Guozhang Wang, Marcos Vaz Salles,

    E-Print Network [OSTI]

    Gehrke, Johannes

    Making Time-stepped Applications Tick in the Cloud Tao Zou, Guozhang Wang, Marcos Vaz Salles, David Bindel, Alan Demers, Johannes Gehrke, Walker White Cornell University University of Copenhagen Ithaca, NY}@cs.cornell.edu ABSTRACT Scientists are currently evaluating the cloud as a new platform. Many important scientific

  2. White dwarf evolutionary sequences for low-metallicity progenitors: The impact of third dredge-up

    E-Print Network [OSTI]

    Althaus, Leandro G; Bertolami, Marcelo M Miller; Córsico, Alejandro H; García-Berro, Enrique

    2015-01-01T23:59:59.000Z

    We present new white dwarf evolutionary sequences for low-metallicity progenitors. White dwarf sequences have been derived from full evolutionary calculations that take into account the entire history of progenitor stars, including the thermally-pulsing and the post-asymptotic giant branch phases. We show that for progenitor metallicities in the range 0.00003--0.001, and in the absence of carbon enrichment due to the occurrence of a third dredge-up episode, the resulting H envelope of the low-mass white dwarfs is thick enough to make stable H burning the most important energy source even at low luminosities. This has a significant impact on white dwarf cooling times. This result is independent of the adopted mass-loss rate during the thermally-pulsing and post-AGB phases, and the planetary nebulae stage. We conclude that in the absence of third dredge-up episodes, a significant part of the evolution of low-mass white dwarfs resulting from low-metallicity progenitors is dominated by stable H burning. Our study...

  3. Discovery of Two New Thermally Bloated Low-Mass White Dwarfs Among the Kepler Binaries

    E-Print Network [OSTI]

    Rappaport, S; Levine, A; Sanchis-Ojeda, R; Gandolfi, D; Nowak, G; Palle, E; Prsa, A

    2015-01-01T23:59:59.000Z

    We report the discovery of two new low-mass, thermally bloated, hot white dwarfs among the Kepler sample of eclipsing binaries. These are KIC 9164561 and KIC 10727668 with orbital periods of 1.2670 and 2.3058 days, respectively. The current primary in both systems is an A star of about 2 Msun. This brings the number of similar binaries among the Kepler sample to six, and the two new systems have the shortest orbital periods among them. The white dwarf in KIC 9164561 has the largest thermal bloating, compared to its cold degenerate radius, of about a factor of 14. We utilize RV measurements of the A star in KIC 9164561 to determine the white dwarf mass rather accurately: 0.197 +/- 0.005 Msun. The mass of the white dwarf in KIC 10727668 is based on the Doppler boosting signal in the Kepler photometry, and is less accurately determined to be 0.266 +/- 0.035 Msun. Based on the inferred radii and effective temperatures of these two white dwarfs we are able to make an independent theoretical estimate of their masse...

  4. Cloud-integrated Storage What & Why 2StoreSimple White Pages: Shoring Up Infrastructure Weaknesses with Cloud Storage

    E-Print Network [OSTI]

    Chaudhuri, Surajit

    Cloud-integrated Storage ­ What & Why #12;2StoreSimple White Pages: Shoring Up Infrastructure Weaknesses with Cloud Storage Overview..........................................................................................................3 Enterprise-class storage platform

  5. NREL Activities to Open Capital Market Investment and Bank Lending for Solar Deployment: Presentation to the White House (Presentation)

    SciTech Connect (OSTI)

    Mendelsohn, M.; Joshi, J.

    2014-09-01T23:59:59.000Z

    Briefing for White House personnel and members of various agencies (HUD, USDA, etc.) on SAPC process and see what efficiencies can be brought to Federal contracting process.

  6. Sr{sub 3}Al{sub 2}O{sub 5}Cl{sub 2}:Ce{sup 3+},Eu{sup 2+}: A potential tunable yellow-to-white-emitting phosphor for ultraviolet light emitting diodes

    SciTech Connect (OSTI)

    Song Yanhua; Jia Guang; Yang Mei; Huang Yeju; You Hongpeng; Zhang Hongjie [State Key laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022 (China) and Graduate University of the Chinese Academy of Sciences, Beijing 100049 (China)

    2009-03-02T23:59:59.000Z

    The Sr{sub 3}Al{sub 2}O{sub 5}Cl{sub 2}:Ce{sup 3+},Eu{sup 2+} phosphors were prepared by solid state reaction. The obtained phosphors exhibit a strong absorption in the UV-visible region and have two intense emission bands at 444 and 609 nm. The energy transfer from the Ce{sup 3+} to Eu{sup 2+} ions was observed, and the critical distance has been estimated to be about 24.5 A by spectral overlap method. Furthermore, the developed phosphors can generate lights from yellow-to-white region under the excitation of UV radiation by appropriately tuning the activator content, indicating that they have potential applications as an UV-convertible phosphor for white light emitting diodes.

  7. Renewal Application

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

    Renewal Individual Permit Renewal Application The Permit expires March 31, 2014 and existing permit conditions will be in effect until a new permit is issued. The Permittees...

  8. Feasibility of white-rot fungi for biodegradation of PCP-treated ammunition boxes. Final report

    SciTech Connect (OSTI)

    Scholze, R.J.; Lamar, R.T.; Bolduc, J.; Dietrich, D.

    1995-01-01T23:59:59.000Z

    Millions of pounds of wood ammunition boxes treated with the wood preservative pentachiorophenol (PCP) are being stockpiled at military installations, primarily depots, because cost-effective disposal is not readily available. The Army needs cost-effective and environmentally benign treatment methods for destruction and disposal of PCP-treated wood products. This research investigated the use of white-rot fungi to biodegrade PCP-treated wood. Results showed that white-rot fungi effectively decreased the PCP concentration in contaminated hardwood and softwood chips. Under ideal laboratory conditions the fungi reduced the PCP concentration by 80 percent; a field study showed only a 30 percent decrease in PCP concentration. Despite this disparity, this study demonstrated the feasibility of using white-rot fungi to reduce PCP in treated wood.

  9. Zeeman tomography of magnetic white dwarfs, I. Reconstruction of the field geometry from synthetic spectra

    E-Print Network [OSTI]

    F. Euchner; S. Jordan; K. Beuermann; B. T. Gaensicke; F. V. Hessmann

    2002-05-21T23:59:59.000Z

    We have computed optical Zeeman spectra of magnetic white dwarfs for field strengths between 10 and 200MG and effective temperatures between 8000 and 40000K. They form a database containing 20628 sets of flux and circular polarization spectra. A least-squares optimization code based on an evolutionary strategy can recover relatively complex magnetic field topologies from phase-resolved synthetic Zeeman spectra of rotating magnetic white dwarfs. We consider dipole and quadrupole components which are non-aligned and shifted off-centre. The model geometries include stars with a single high-field spot and with two spots separated by approx. 90 degrees. The accuracy of the recovered field structure increases with the signal-to-noise ratio of the input spectra and is significantly improved if circular polarization spectra are included in addition to flux spectra. We discuss the strategies proposed so far to unravel the field geometries of magnetic white dwarfs.

  10. Development of Advanced Manufacturing Methods for Warm White LEDs for General Lighting

    SciTech Connect (OSTI)

    Deshpande, Anirudha; Kolodin, Boris; Jacob, Cherian; Chowdhury, Ashfaqul; Kuenzler, Glenn; Sater, Karen; Aesram, Danny; Glaettli, Steven; Gallagher, Brian; Langer, Paul; Setlur, Anant; Beers, Bill

    2012-03-31T23:59:59.000Z

    GE Lighting Solutions will develop precise and efficient manufacturing techniques for the “remote phosphor” platform of warm-white LED products. In volume, this will be demonstrated to drive significant materials, labor and capital productivity to achieve a maximum possible 53% reduction in overall cost. In addition, the typical total color variation for these white LEDs in production will be well within the ANSI bins and as low as a 4-step MacAdam ellipse centered on the black body curve. Achievement of both of these objectives will be demonstrated while meeting a performance target of > 75 lm/W for a warm-white LED and a reliability target of <30% lumen drop / <2-step MacAdam ellipse shift, estimated over 50,000 hrs.

  11. Analysis of DA White Dwarfs from the McCook & Sion Catalog

    E-Print Network [OSTI]

    A. Gianninas; P. Bergeron; P. Dufour

    2005-03-04T23:59:59.000Z

    The Sloan Digital Sky Survey has already doubled the number of spectroscopically identified white dwarfs. However, there remains a wealth of white dwarfs in the McCook & Sion catalog for which little or nothing is known. We have thus undertaken a spectroscopic survey of all Northern hemisphere DA white dwarfs from this catalog in order to (1) confirm the spectroscopic classification, and (2) provide measurements of Teff and log g for each star. As part of this project, we have also secured spectroscopic data for all DA stars with high-speed photometric measurements available, in order to study the purity of the ZZ Ceti instability strip, which has recently been challenged, once again.

  12. Super-Chandrasekhar White Dwarfs with Magnetic-dependent Equation of State

    E-Print Network [OSTI]

    Zou, Qi-Xiang

    2015-01-01T23:59:59.000Z

    Recently, some over-luminous Ia supernovaes are found, suggesting that their progenitors are white dwarfs more massive than the Chandrasekhar limit, which perhaps result from ultra-strong magnetic field inside the white dwarfs. We present an equation of state, explicitly magnetic-dependent and analytically practicable, and observe that the change of equation of states due to magnetic field waning along radium will so significantly influence the configuration of a white dwarf as that its density does not monotonically decrease, but goes down at first, re-peaks near the crust and falls off again. As a supernovae will, in the single degenerate Ia supernovae system, leave the remnant of its companion and a neutron star (pulsar star), we point out that the observations of these objects can put our model into tests

  13. Systematic relativistic quantum effects on screening of fusion rates in white dwarfs

    E-Print Network [OSTI]

    Shirish M. Chitanvis

    2006-11-21T23:59:59.000Z

    Relativistic electron degeneracy effects are dominant in ultra-dense plasmas (UDP), such as those found in white dwarfs. These effects can be treated systematically by obtaining an expansion of the screening length in inverse powers of $\\hbar^{2}$. In general, our theory leads to an ${\\cal O}(10)$ effect on the enhancement of fusion rates in white dwarfs. Further, it is shown analytically for these stellar conditions that Bose statistics of nuclei have a negligible effect on the screening length, in consonance with Monte Carlo simulations found in literature.

  14. Systematic quantum effects on screening of fusion rates in white dwarfs

    E-Print Network [OSTI]

    Shirish M. Chitanvis

    2006-10-19T23:59:59.000Z

    Electron degeneracy effects are dominant in ultra-dense plasmas (UDP), such as those found in white dwarfs. These effects can be treated systematically by obtaining an expansion of the screening length in inverse powers of $\\hbar^{2}$. The theory exhibits Thomas-Fermi-like screening in an appropriate regime. In general, our theory leads to an ${\\cal O}(1)$ effect on the enhancement of fusion rates in white dwarfs. Further, it is shown analytically for these stellar conditions that Bose statistics of nuclei have a negligible effect on the screening length, in consonance with Monte Carlo simulations found in literature.

  15. Comparison of the concepts of recreation held by Negroes and whites in a southern community

    E-Print Network [OSTI]

    Edgar, Donnie James

    1972-01-01T23:59:59.000Z

    COMPARISON OF THE CONCEPTS OF RECREATION HELD BY NEGROES AND WHITES IN A SOUTHERN COMi~iUNITY A Thesis by DONNIE JAMES EDGAR Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirement for the degree... of MASTER OF SCIENCE December 1972 Major Subject: Recreation and Resources Development COMPARISON OF THE CONCEPTS OF RECREATION HELD BY NEGROES AND WHITES IN A SOUTHERN COMMUNITY A Thesis by DONNIE JAMES EDGAR Approved as to sty1e and content by: C...

  16. Follicular changes and reproductive hormones in captive white- tailed deer during the breeding season

    E-Print Network [OSTI]

    Biediger, Timothy Gerard

    1986-01-01T23:59:59.000Z

    by: Stephen W. J. Sea er (Chairman) Duane C. raemer (Member) Thomas H. Welsh, Jr. (Member) mes D. McCrady (H ad of Depar August 1986 ABSTRACT Follicular Changes and Reproductive Hormones in Captive White ? tailed Deer During the Breeding... during the estrous cycle of the white-tailed deer (Odocoi Jeus vgrgini anus) were obtained from this study. Does were observed for detection of estrus once daily during the 1984-85 season and twice daily during the 1985-86 season, using a penile...

  17. The primordial explosion of a false white hole from a 5D vacuum

    E-Print Network [OSTI]

    José Edgar Madriz Aguilar; Claudia Moreno; Mauricio Bellini

    2013-12-05T23:59:59.000Z

    We explore the cosmological consequences of some possible big bang produced by a black-hole with mass $M$ in an 5D extended SdS. Under these particular circumstances, the effective 4D metric obtained by the use of a constant foliation on the extra coordinate is comported as a false white-hole (FWH), which evaporates for all unstable modes that have wavelengths bigger than the size of the FWH. Outside the white hole the repulsive gravitational field can be considered as weak, so that the dynamics for fluctuations of the inflaton field and the scalar perturbations of the metric can be linearized.

  18. Allozymic and mitochondrial DNA analysis of sympatric white-tailed and mule deer in West Texas

    E-Print Network [OSTI]

    Ballinger, Scott Webster

    1987-01-01T23:59:59.000Z

    for the degree of MASTER OF SCIENCE December 1987 Ma)or Sub)act: Wildlife and Fisheries Science ALLOZYMIC AND MITOCHONDRIAL DNA ANALYSIS OF SYMPATRIC WHITE-TAILED AND MULE DEER IN WEST TEXAS A Thesis by SCOTT WEBSTER BALLINGER Approved as to style... and content by: John . Bickham (Chairman) Ira . Gr enbaum er) Nova J, Silvy (Member) vid J. Schmidly (Mamba and Department H ad) December 1987 ABSTRACT Allozymic and Mitochondrial DNA Analysis of Sympatric White-tailed and Mule Deer in West Texas...

  19. Phosphors for near UV-Emitting LED's for Efficacious Generation of White Light

    SciTech Connect (OSTI)

    McKittrick, Joanna

    2013-09-30T23:59:59.000Z

    1) We studied phosphors for near-UV (nUV) LED application as an alternative to blue LEDs currently being used in SSL systems. We have shown that nUV light sources could be very efficient at high current and will have significantly less binning at both the chip and phosphor levels. We identified phosphor blends that could yield 4100K lamps with a CRI of approximately 80 and LPWnUV,opt equal to 179 for the best performing phosphor blend. Considering the fact that the lamps were not optimized for light coupling, the results are quite impressive. The main bottleneck is an optimum blue phosphor with a peak near 440 nm with a full width half maximum of about 25 nm and a quantum efficiency of >95%. Unfortunately, that may be a very difficult task when we want to excite a phosphor at ~400 nm with a very small margin for Stokes shift. Another way is to have all the phosphors in the blend having the excitation peak at 400 nm or slightly shorter wavelength. This could lead to a white light source with no body color and optimum efficacy due to no self-absorption effects by phosphors in the blend. This is even harder than finding an ideal blue phosphor, but not necessarily impossible. 2) With the phosphor blends identified, light sources using nUV LEDs at high current could be designed with comparable efficacy to those using blue LEDs. It will allow us to design light sources with multiple wattages using the same chips and phosphor blends simply by varying the input current. In the case of blue LEDs, this is not currently possible because varying the current will lower the efficacy at high current and alter the color point. With improvement of phosphor blends, control over CRI could improve. Less binning at the chip level and also at the phosphor blend level could reduce the cost of SSL light sources. 3) This study provided a deeper understanding of phosphor characteristics needed for LEDs in general and nUV LEDs in particular. Two students received Ph.D. degrees and three undergraduates participated in this work. Two of the undergraduate students are now in graduate school. The results were widely disseminated – 20 archival journal publications (published, accepted or in preparation) and three conference proceedings resulted. The students presented their work at 11 different national/international conferences (32 oral or poster presentations) and the PI’s delivered 12 invited, keynote or plenary lectures.

  20. TRACE and YOHKOH Observations of a White Light Flare Thomas R. Metcalf 1 , David Alexander 1 , Hugh S. Hudson 2 ,

    E-Print Network [OSTI]

    Metcalf, Thomas R.

    S. Hudson 2 , and Dana W. Longcope 3 ABSTRACT We present observations of a large solar white light at 400 km s 1 . This is evidence in favor of particle acceleration models which energize the electrons), are typically the most energetic of solar ares. \\White light" refers to continuum emission in excess of the pho

  1. White Sturgeon Mitigation and Restoration in the Columbia and Snake Rivers Upstream from Bonneville Dam; 2002-2003 Annual Report.

    SciTech Connect (OSTI)

    Ward, David L.; Kern, J. Chris; Hughes, Michele L. (Oregon Department of Fish and Wildlife)

    2004-02-01T23:59:59.000Z

    We report on our progress from April 2002 through March 2003 on determining the effects of mitigative measures on productivity of white sturgeon populations in the Columbia River downstream from McNary Dam, and on determining the status and habitat requirements of white sturgeon populations in the Columbia and Snake rivers upstream from McNary Dam.

  2. Trophic ecology of blue whiting in the Barents Sea Andrey V. Dolgov, Edda Johannesen, Mikko Heino, and Erik Olsen

    E-Print Network [OSTI]

    Heino, Mikko

    cor- relation with inflows of Atlantic water into the Barents Sea. Climate-mediated changes, Russia. E. Johannesen, M. Heino, and E. Olsen: Institute of Marine Research, PO Box 1870 Nordnes, NO-5817 whiting are indirectly related to climate through a correlation with strong year classes of blue whiting

  3. White Paper: Tiltmeter-Based Bridge Scour Monitoring David Kosnik, P.E. Steve Ng, P.E.

    E-Print Network [OSTI]

    White Paper: Tiltmeter-Based Bridge Scour Monitoring David Kosnik, P.E. Steve Ng, P University and the California Department of Transporta- tion (CalTrans). This white paper will describe associated with scour velocities cloud the formation of the hole, while accumulation of debris or re

  4. Clofibrate-induced changes in the liver, heart, brain and white adipose lipid metabolome of Swiss-Webster mice

    E-Print Network [OSTI]

    Hammock, Bruce D.

    Clofibrate-induced changes in the liver, heart, brain and white adipose lipid metabolome of Swiss targeted metabolomics to liver, heart, brain and white adipose tissue samples from male Swiss-Webster mice were quantified. Responses were tissue-specific, with changes observed in the liver > heart >> brain

  5. THE POST-MERGER MAGNETIZED EVOLUTION OF WHITE DWARF BINARIES: THE DOUBLE-DEGENERATE CHANNEL OF SUB-CHANDRASEKHAR TYPE Ia SUPERNOVAE AND THE FORMATION OF MAGNETIZED WHITE DWARFS

    SciTech Connect (OSTI)

    Ji Suoqing; Fisher, Robert T. [University of Massachusetts Dartmouth, Department of Physics, 285 Old Westport Road, North Dartmouth, MA 02740 (United States); Garcia-Berro, Enrique [Departament de Fisica Aplicada, Universitat Politecnica de Catalunya, c/Esteve Terrades, 5, E-08860 Castelldefels (Spain); Tzeferacos, Petros; Jordan, George; Lee, Dongwook [Center for Astrophysical Thermonuclear Flashes, The University of Chicago, Chicago, IL 60637 (United States); Loren-Aguilar, Pablo [School of Physics, University of Exeter, Stocker Road, Exeter EX4 4QL (United Kingdom); Cremer, Pascal [Bethe Center for Theoretical Physics, Universitaet Bonn, Nussallee 12, D-53115 Bonn (Germany); Behrends, Jan [Fachbereich Physik, Freie Universitaet Berlin, Arnimallee 14, D-14195 Berlin (Germany)

    2013-08-20T23:59:59.000Z

    Type Ia supernovae (SNe Ia) play a crucial role as standardizable cosmological candles, though the nature of their progenitors is a subject of active investigation. Recent observational and theoretical work has pointed to merging white dwarf binaries, referred to as the double-degenerate channel, as the possible progenitor systems for some SNe Ia. Additionally, recent theoretical work suggests that mergers which fail to detonate may produce magnetized, rapidly rotating white dwarfs. In this paper, we present the first multidimensional simulations of the post-merger evolution of white dwarf binaries to include the effect of the magnetic field. In these systems, the two white dwarfs complete a final merger on a dynamical timescale, and are tidally disrupted, producing a rapidly rotating white dwarf merger surrounded by a hot corona and a thick, differentially rotating disk. The disk is strongly susceptible to the magnetorotational instability (MRI), and we demonstrate that this leads to the rapid growth of an initially dynamically weak magnetic field in the disk, the spin-down of the white dwarf merger, and to the subsequent central ignition of the white dwarf merger. Additionally, these magnetized models exhibit new features not present in prior hydrodynamic studies of white dwarf mergers, including the development of MRI turbulence in the hot disk, magnetized outflows carrying a significant fraction of the disk mass, and the magnetization of the white dwarf merger to field strengths {approx}2 Multiplication-Sign 10{sup 8} G. We discuss the impact of our findings on the origins, circumstellar media, and observed properties of SNe Ia and magnetized white dwarfs.

  6. HST+COS spectra of the double white dwarf CSS 41177 place the secondary inside the pulsational instability strip

    E-Print Network [OSTI]

    Bours, Madelon; Gaensicke, Boris; Parsons, Steven

    2015-01-01T23:59:59.000Z

    We present Hubble Space Telescope + Cosmic Origins Spectrograph (HST+COS) data of the eclipsing double white dwarf binary CSS 41177. Due to the temperature difference between the two white dwarfs, the HST+COS far-ultraviolet data are dominated by the hot, primary white dwarf and allow us to precisely measure its temperature (T1). Using eclipse observations, we also tightly constrain the temperature of the cooler secondary white dwarf (T2). Our results, where T1 = 22439 +/- 59 K and T2 = 10876 +/- 32 K, with the uncertainties being purely statistical, place the secondary inside and close to the blue edge of the empirical instability strip for low temperature hydrogen-atmosphere white dwarfs. Dedicated high-speed photometry is encouraged to probe for the presence of pulsations, which will constrain the border of the instability strip as well as probe a new region of low gravity within the strip.

  7. Wireless Internet for The Mobile Enterprise Consortium http://winmec.ucla.edu/ WHITE PAPER

    E-Print Network [OSTI]

    California at Los Angeles, University of

    -WINMEC-2003-301-MOBILE-MULTIMEDIA-MW CONFIDENTIAL, © Su, Prabhu, Chu and Gadh, UCLA-WINMEC-2003-301-MOBILE-Cheng Chu, Rajit Gadh Wireless Internet for the Mobile Enterprise Consortium (WINMEC) - wireless://winmec.ucla.edu/ WHITE PAPER UCLA-WINMEC-2003-301-MOBILE-MULTIMEDIA-MW CONFIDENTIAL, © Su, Prabhu, Chu and Gadh, UCLA

  8. UNITED INDIA INSURANCE COMPANY LIMITED REGISTERED & HEAD OFFICE: 24, WHITES ROAD, CHENNAI-600014

    E-Print Network [OSTI]

    Dhingra, Narender K.

    UNITED INDIA INSURANCE COMPANY LIMITED REGISTERED & HEAD OFFICE: 24, WHITES ROAD, CHENNAI-600014 HEALTH INSURANCE POLICY ­ GROUP 1 WHEREAS the insured designated in the Schedule hereto has by a proposal to be incorporated herein has applied to UNITED INDIA INSURANCE COMPANY LTD. (hereinafter called the COMPANY

  9. Compatibility of Physics and Engineering in Magnetic Fusion White Paper on Magnetic Fusion Priorities

    E-Print Network [OSTI]

    Compatibility of Physics and Engineering in Magnetic Fusion White Paper on Magnetic Fusion.edu (Dated: July 14, 2012) The compatibility of the requirements of physics and engineering is the fundamental issue in the achievement of useful magnetic fusion energy. Issues that must be addressed include

  10. LOW RANK SOLUTION OF LYAPUNOV EQUATIONS JING-REBECCA LI AND JACOB WHITE

    E-Print Network [OSTI]

    Li, Jing-Rebecca

    @cims.nyu.edu). The research of this author was supported by the National Science Foundation and the Semiconductor Research of Technology, Room 36-817, Cam- bridge, MA 02139-4307 (white@mit.edu). 260 #12;LOW RANK SOLUTION OF LYAPUNOV

  11. Ten Years at the Calif. Energy Commission White Roofs to Cool your Building, your City and

    E-Print Network [OSTI]

    Kammen, Daniel M.

    Ten Years at the Calif. Energy Commission & White Roofs to Cool your Building, your City and (this" 32" 37" 42" 50" CEC Max Screen Area (1400 in2 or ~57.4 diagonal inches) Energy Star 3.0 TVs (10 is new !) Cool the World Arthur H. Rosenfeld, Former Commissioner California Energy Commission

  12. White emitting polyfluorene functionalized with azide hybridized on near-UV light emitting diode

    E-Print Network [OSTI]

    Demir, Hilmi Volkan

    White emitting polyfluorene functionalized with azide hybridized on near-UV light emitting diode generation using CdSe/ZnS core-shell nanocrystals hybridized with InGaN/GaN light emitting diodesGaN/conjugated polymer hybrid light-emitting diodes," Appl. Phys. Lett. 70, 2664-2666 (1997). 9. H. V. Demir, S

  13. White Paper: The Role of Venus in the Cosmologies of Mesoamerica, West Mexico,

    E-Print Network [OSTI]

    #12;White Paper: The Role of Venus in the Cosmologies of Mesoamerica, West Mexico, the American Southwest, and Southeast Polly Schaafsma (Chair) (Museum of New Mexico, Santa Fe), Ed Krupp (Griffith are examined between Mesoamerica, West Mexico, the American Southwest and Southeast. In Mesoamerica the timed

  14. Four Numerical Approaches for Solving the Radiative Transfer Equation in Magnetized White-Dwarf Atmospheres

    E-Print Network [OSTI]

    Stefan Jordan; Holger Schmidt

    2003-02-04T23:59:59.000Z

    We compare four different methods to calculate radiative transfer through a magnetized stellar atmosphere, and apply them to the case of magnetic white dwarfs. All methods are numerically stable enough to allow determination of the magnetic field structure, but distinctions between faster, simplifying, methods, and elaborate, but more CPU-time consuming, methods, can be made.

  15. Computational Modeling and the Experimental Plasma Research Program A White Paper Submitted to the FESAC Subcommittee

    E-Print Network [OSTI]

    Computational Modeling and the Experimental Plasma Research Program A White Paper Submitted of the fusion energy program. The experimental plasma research (EPR) program is well positioned to make major in fusion development and promote scientific discovery. Experimental plasma research projects explore

  16. CMU-ITC-83-029 WHITE PAPER: The ICE Execution Environment

    E-Print Network [OSTI]

    CMU-ITC-83-029 WHITE PAPER: The ICE Execution Environment Document Number 003-001/002.01 DRAFT-Mellon University Schenley Park Pittsburgh, PA 15213 #12;The ICE Execution Environment DRAFT 003- 001/002.01 U ncla ssified ( 2 The ICE Execution Environment #12;The ICE Execution Environment DRAFT 003

  17. THE U.S. ADVANCED TOKAMAK FUSION SCIENCE PROGRAM A White Paper

    E-Print Network [OSTI]

    Version 14 5/20/99 THE U.S. ADVANCED TOKAMAK FUSION SCIENCE PROGRAM A White Paper Executive Overview Tokamak research shows that magnetic fusion energy deserves serious consideration as a viable and pursue greater understanding of the new advanced-tokamak (AT) regimes to increase the economic

  18. GENERAL TECHNICAL REPORT PSW-GTR-240 White Pine Blister Rust Resistance of 12 Western

    E-Print Network [OSTI]

    Standiford, Richard B.

    have been assessed for white pine blister rust infection and mortality at multiple ages since they were of the families were from wind-pollinated seedlots from forest stands and represent some of the top ranked had moderate to high levels of blister rust infection, and moderate levels of mortality were present

  19. White Sharks (Carcharodon carcharias) Scavenging on Whales and Its Potential Role in Further Shaping the

    E-Print Network [OSTI]

    Miami, University of

    ,3,4 * 1 Apex Expeditions, Cape Town, South Africa, 2 Leonard and Jayne Abess Center for Ecosystem Science on whale carcasses in False Bay, South Africa. Observations of white sharks scavenging over successive days carnivores, and is an important energy transfer pathway that can impact ecosystem structure and function

  20. Behavioral and Physiological Response of White Sturgeon to an Electrical Sea Lion Barrier System

    E-Print Network [OSTI]

    Suski, Cory David

    by state and federal agencies for electrofishing of salmonid fishes (NMFS 2000; WSDOT 2006), and the systemBehavioral and Physiological Response of White Sturgeon to an Electrical Sea Lion Barrier System Technology Center, 1440 Abernathy Creek Road, Longview, Washington 98632, USA Abstract.--Action agencies have