Sample records for halifax nova scotia

  1. CCCG 2014, Halifax, Nova Scotia, August 1113, 2014 An improved method for generating triangle-mesh models of images

    E-Print Network [OSTI]

    Adams, Michael D.

    CCCG 2014, Halifax, Nova Scotia, August 11­13, 2014 An improved method for generating triangle of Victoria, Victoria, BC, Canada, {xiaom,mdadams}@ece.uvic.ca triangulated were chosen. Since

  2. Nova Scotia Jobs Fund (Nova Scotia, Canada)

    Broader source: Energy.gov [DOE]

    The Nova Scotia Jobs Fund pursues investment opportunities for assisting communities in transition, supporting industry sectors, offering regional support, assisting small businesses programs, and...

  3. area nova scotia: Topics by E-print Network

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

    Renewed Energy Strategy and Climate Change Action Plan Larry Halifax, Nova Scotia, Canada larry.hughes@dal.ca http:lh.ece.dal.caenen 19 December 2007 Hughes, Larry 4 Foreign...

  4. Nova Scotia Business Development Program (Nova Scotia, Canada)

    Broader source: Energy.gov [DOE]

    The Nova Scotia Business Development Program helps small business get started and existing businesses expand. This program encourages business start-ups and provides help through qualified...

  5. Environmental Assessment (Nova Scotia, Canada)

    Broader source: Energy.gov [DOE]

    Nova Scotia Environment conducts environmental assessments on projects and developments to ensure they adhere to the laws and regulations of the province. Developments required to undergo an...

  6. Renewable Energy Standard (Nova Scotia, Canada)

    Broader source: Energy.gov [DOE]

    On February 1, 2007, Nova Scotia's new Renewable Energy Standards took effect. By 2013, Nova Scotia will generate at least 18.5% of the Province's electricity through renewable energy -- wind,...

  7. Scotia Energy Electricity- Net Metering Program (Nova Scotia, Canada)

    Broader source: Energy.gov [DOE]

    Nova Scotia Power Inc. Net Metering allows residential and commercial customers to connect small, renewable energy generating units to the provincial power grid.

  8. Capital Investment Incentive (Nova Scotia, Canada)

    Broader source: Energy.gov [DOE]

    The Capital Investment Incentive (CII) is part of the Productivity Investment Program as outlined in the economic growth plan for Nova Scotia, jobsHere.

  9. Solid Waste Regulations (Nova Scotia, Canada)

    Broader source: Energy.gov [DOE]

    Nova Scotia Environment administers waste management for the province. Regulations include specific rules and standards for landfills, establish a Resource Recovery Fund, and guidelines for...

  10. Energy Security in Nova Scotia Larry Hughes

    E-Print Network [OSTI]

    Hughes, Larry

    to maintain energy security #12;Mr. Harper and his energy superpower · "...an ocean of oil soaked sand liesERG/200706 Energy Security in Nova Scotia Larry Hughes Energy Research Group Electrical to Café Canada, Mahone Bay 30 November 2007 #12;Energy security in Nova Scotia Larry Hughes, PhD Energy

  11. Climate Action Plan (Nova Scotia, Canada)

    Broader source: Energy.gov [DOE]

    Nova Scotia's Climate Change Action Plan has two main goals: reducing the province's contribution to climate change by reducing greenhouse gas (GHG) emissions and preparing for changes to the...

  12. Qualifying RPS Market States (Nova Scotia, Canada)

    Broader source: Energy.gov [DOE]

    This entry lists the states with RPS policies that accept generation located in Nova Scotia, Canada as eligible sources towards their Renewable Portfolio Standard targets or goals. For specific...

  13. Energy Security in Nova Scotia Larry Hughes

    E-Print Network [OSTI]

    Hughes, Larry

    of energy) PV ­ Photovoltaic (usually solar panels that generate electricity from the sun) RES ­ Renewable ) joules (a unit of energy) HST ­ Harmonized Sales Tax (Nova Scotia's sales tax: 8% provincial plus 6% federal) ha ­ hectare IEA ­ International Energy Agency kWh ­ Kilowatt-hour (a unit of energy) LDV ­ Light

  14. NOVA SCOTIA UTILITY AND REVIEW BOARD IN THE MATTER OF: The Public Utilities Act, R.S.N.S. 1989, c.380 as

    E-Print Network [OSTI]

    Hughes, Larry

    Halifax, Nova Scotia, B3J 2X4, Canada larry.hughes@dal.ca 24 November 2004 Abstract Energy suppliers-subsidization, and does not allow the energy supplier to create price signals. Although other, more progressive billing schemes, such as time-of-usage billing, exist, some energy suppliers and their customers are reluctant

  15. Community Feed-in Tariff (Nova Scotia, Canada)

    Broader source: Energy.gov [DOE]

    The Community Feed-In Tariff Program (COMFIT) is designed to increase local ownership of small-scale energy projects in Nova Scotia. The program provides an opportunity for community-based power...

  16. Nova Scotia Research and Innovation Graduate Scholarships Information Sheet May 2014

    E-Print Network [OSTI]

    Scholarships Information Sheet May 2014 3 · Resource Sectors · Social Innovation #12;Nova Scotia Research and Innovation Graduate Scholarships Information Sheet May 2014 1 Selection Volunteerism/community outreach 20% #12;Nova Scotia Research and Innovation Graduate Scholarships Information

  17. Nova Scotia: 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 on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia: Energy ResourcesLoading map...(Utility Company)References ↑Information NotificationNottoway County,Nova

  18. Text and slides of presentation originally presented to the Nova Scotia Utility and Review Board regarding the province's Demand Side Management program,19 April 2010.

    E-Print Network [OSTI]

    Hughes, Larry

    regarding the province's Demand Side Management program,19 April 2010. ERG/201003 Nova Scotia's Demand Side Scotia's Demand Side Management program: Concerns and recommendations1 Larry Hughes, PhD Energy Research restrictions, I will discuss only two of my concerns regarding Nova Scotia's Demand Side Management (DSM

  19. Mineralogical characterization of arsenic in gold mine tailings from three sites in Nova Scotia

    SciTech Connect (OSTI)

    M Corriveau; H Jamieson; M Parsons; G Hall

    2011-12-31T23:59:59.000Z

    Chronic exposure to high concentrations of arsenic (As) in windblown and vehicle-raised dust from tailings sites in Nova Scotia poses a potential health risk to recreational users of these areas and to nearby residents. The exposure may involve inhalation of dust, as well as oral ingestion of particles. It is important to understand the mineralogy and morphology of As-bearing dust particles in order to evaluate the risk posed by near-surface particulates in As-bearing tailings fields, as this will influence the stability and toxicity of As in the wastes. Optical mineralogy, scanning electron microscopy, electron microprobe, X-ray diffraction, synchrotron-based micro-X-ray diffraction ({mu}XRD) and micro-X-ray absorption near edge structure ({mu}XANES), and sequential leach extractions were applied to tailings samples from three sites in eastern Nova Scotia. Arsenic occurs naturally in these gold deposits mainly in arsenopyrite (FeAsS). In the near-surface material of the tailings fields, sulphide minerals have almost completely oxidized to secondary minerals such as scorodite (FeAsO{sub 4}{center_dot}2H{sub 2}O) and Ca-Fe arsenates. Iron oxyhydroxides contain variable amounts of As{sub 2}O{sub 5} from trace to 30 wt.% and CaO up to 8 wt.%. The presence of multiple As-hosting solid phases, including relatively soluble Ca-Fe arsenates and Fe oxyhydroxides with adsorbed As has important implications for human health risk assessment and remediation design.

  20. An investigation of cathodoluminescence in albite from the A-type Georgeville granite, Nova Scotia

    SciTech Connect (OSTI)

    Dalby, Kim N.; Anderson, Alan J.; Mariano, Anthony N.; Gordon, Robert A.; Mayanovic, Robert A.; Wirth, Richard (Missouri SU); (SFX); (Simon); (GFZ)

    2009-12-15T23:59:59.000Z

    Cathodoluminescence (CL) reveals red and blue colors within single, non-turbid albite (Ab{sub 98-99}) grains from the Georgeville granite, Nova Scotia. A 720 nm X-ray excited optical luminescence (XEOL) peak characterizes red CL regions, while a 280 nm XEOL feature dominates blue CL regions. Synchrotron X-ray fluorescence results indicate that red CL and the 720 nm XEOL peak intensities relate to total Fe concentrations. The relationship between red CL and Fe content is confirmed by electron microprobe (EMPA) and laser ablation-inductively coupled mass spectrometry (LA-ICP-MS). The XEOL technique is used to exclude the Fe K-edge as the cause of red CL. X-ray absorption spectroscopy results indicate that Fe in both the red and blue CL regions is Fe{sup 3+}, and that red CL activation may relate to the Si-Al order of the feldspar and to the distribution of Fe on tetrahedral sites. The CL textures, combined with EMPA and LA-ICPMS analyses, indicate that blue CL albite (Ab98) regions contain higher concentrations of Ca, Ti, Pb and rare earth elements, and were replaced, in part, by a more Fe-rich, trace element depleted albite (Ab99) which displays red CL. Complex diffraction contrasts and amorphous deposits identified in transmission electron microscope images suggest that aqueous fluids have reacted with both red and blue CL regions. Fluid inclusion homogenization temperatures of up to 430 C provide a lower estimate of the fluid temperature.

  1. Petrology, geochemistry, and palynology of Joggins Formation (Westphalian A) coals, Cumberland basin, Nova Scotia

    SciTech Connect (OSTI)

    Hower, J.C. [Univ. of Kentucky Center for Applied Energy Research, Lexington, KY (United States); Calder, J.H. [Nova Scotia Dept. of Natural Resources, Halifax (Canada); Cortland, F.E. [Kentucky Geological Survey, Lexington, KY (United States)] [and others

    1996-09-01T23:59:59.000Z

    Five Westphalian A coals were collected from the Joggins Formation section exposed along Chignecto Bay at Joggins, Nova Scotia. Several of the coal beds along the bay were mined beginning in the early 17th century. There has been little detailed investigation of the coal beds of this classic section. The lowermost coal, the Upper Coal 29 (Fundy), is a high-vitrinite coal with a spore assemblage dominated by arboreous lycopod spores with tree ferns subdominant. The upper portions of the coal bed have the highest ratio of well-preserved to poorly-preserved telinite of any of the coals investigated. Coal 19 (Forty Brine) has 88% total vitrinite but, unlike the Fundy coal bed, the telinite has a poor preservation ratio and half of the total vitrinite population comprises gelocollinite and vitrodetrinite. The latter coal bed is directly overlain by a basin-wide limestone bed. The Lower Kimberly (Coal 15) shows good preservation of vitrinite with relatively abundant telinite among the total vitrinite. The Upper Kimberly, which underlies the tetrapod-bearing lycopsid trees found by Lyell and Dawson in 1852, exhibits an upward decrease in arboreous lycopod spores and an increase in the tree fern spore Punctatisporites minutus. The megaspore record is similarly dominated by Lagenicularugosa paralycopodites and tree fern spores. Telinite preservation increases upwards in the Upper Kimberly but overall is well below the preservation ratio of the Fundy coal bed. The coals are all high sulfur, up to 13.7% total sulfur for the lower lithotype of the Fundy coal bed. The Kimberly coals are not only high in total and pyritic sulfur, but also have high concentrations of chalcophile elements.

  2. 3218 VOLUME 128M O N T H L Y W E A T H E R R E V I E W 2000 American Meteorological Society

    E-Print Network [OSTI]

    Jakob, Christian

    of Physics, Dalhousie University, Halifax, Nova Scotia, Canada @ GKSS, Geesthacht, Germany & Atmospheric

  3. Arsenic Mineralogy of Near-surface Tailings and Soils: Influences on Arsenic Mobility and Bioaccessibility in the Nova Scotia Mining Districts

    SciTech Connect (OSTI)

    Walker, S.; Parsons, M; Jamieson, H; Lanzirotti, A

    2009-01-01T23:59:59.000Z

    The mineral form, grain size and texture of As-bearing particles are important factors influencing the risk to human health associated with exposure to As-contaminated soils, sediments and mine wastes. Mining of arsenopyrite-bearing gold ores in Nova Scotia in the late 1800s and early 1900s has left a legacy of weathered, As-rich tailings deposits in more than 60 gold districts across the province. Fourteen samples of near-surface tailings and one of soil from several former gold mines frequented by the public were sieved to <150 {mu}m and characterized using conventional mineralogical techniques (XRD, microscopy and EPMA) and synchrotron micro-analysis ({mu}-X-ray diffraction, {mu}-X-ray fluorescence and {mu}-X-ray absorption spectroscopy). This study is part of a broader coordinated effort by a multi-department federal and provincial advisory committee formed to coordinate the study of ecosystem and human health risks associated with historical gold mine sites in Nova Scotia. Our study shows that (i) the mineralogy of As in weathered tailings is highly variable, with aggregates of more than one As-bearing phase common in a given sample, and (ii) major differences in As mineralogy in the tailings are mainly controlled by factors that influence the weathering history (e.g., presence or absence of mill concentrates, degree of water saturation, and abundance of relict carbonate minerals). The variable solubility of these primary and secondary As-bearing minerals influences both the environmental mobility and the bioaccessibility of As in near-surface tailings and soil samples.

  4. Effects of Soil Composition and Mineralogy on the Bioaccessibility of Arsenic from Tailings and Soil in Gold Mine Districts of Nova Scotia

    SciTech Connect (OSTI)

    Meunier, Louise; Walker, Stephen R.; Wragg, Joanna; Parsons, Michael B.; Koch, Iris; Jamieson, Heather E.; Reimer, Kenneth J. (Queens); (Brit. Geo.); (Royal); (NRC)

    2010-10-20T23:59:59.000Z

    Bioaccessibility tests and mineralogical analyses were performed on arsenic-contaminated tailings and soils from gold mine districts of Nova Scotia, Canada, to examine the links between soil composition, mineralogy, and arsenic bioaccessibility. Arsenic bioaccessibility ranges from 0.1% to 49%. A weak correlation was observed between total and bioaccessible arsenic concentrations, and the arsenic bioaccessibility was not correlated with other elements. Bulk X-ray absorption near-edge structure analysis shows arsenic in these near-surface samples is mainly in the pentavalent form, indicating that most of the arsenopyrite (As{sup 1-}) originally present in the tailings and soils has been oxidized during weathering reactions. Detailed mineralogical analyses of individual samples have identified up to seven arsenic species, the relative proportions of which appear to affect arsenic bioaccessibility. The highest arsenic bioaccessibility (up to 49%) is associated with the presence of calcium-iron arsenate. Samples containing arsenic predominantly as arsenopyrite or scorodite have the lowest bioaccessibility (<1%). Other arsenic species identified (predominantly amorphous iron arsenates and arsenic-bearing iron(oxy)hydroxides) are associated with intermediate bioaccessibility (1 to 10%). The presence of a more soluble arsenic phase, even at low concentrations, results in increased arsenic bioaccessibility from the mixed arsenic phases associated with tailings and mine-impacted soils.

  5. The alteration of metamict zircon and its role in the remobilization of high-field strength elements in the Georgeville granite, Nova Scotia

    SciTech Connect (OSTI)

    Anderson, A.J.; Wirth, R.; Thomas, R. (SFX); (GFZ)

    2008-10-02T23:59:59.000Z

    The structure and composition of metamict zircon from the Georgeville epizonal A-type granite in the Antigonish Highlands, Nova Scotia, were determined using EMPA, SXRF, LA-ICP-MS, Raman microspectroscopy and TEM data. Individual crystals of zircon are variably altered and consist of four domains distinguished on the basis of texture and composition. Domain A consists of zircon and zirconium oxide nanocrystals in an amorphous matrix and is trace-element-enriched. Replacement of domain A in proximity to microfractures produced a porous and relatively trace-element-poor zircon (domain B) with disseminated Th-U- and Y-enriched inclusions (domain C). Domain D consists of amorphous zirconium silicate that is depleted in trace elements but enriched in Hf. It is found in fractures, together with minor amounts of thorite and thorianite. It Domain D is anhydrous and free of inclusions and pore spaces and has a composition similar to highly crystalline zircon. Micro- and nanoscale element-distribution maps indicate that high-field-strength trace elements in metamict zircon were redistributed during alteration by diffusion and by dissolution-and-reprecipitation processes near microfractures and other fluid channelways. The anomalous chondrite-normalized rare-earth-element patterns and Nd isotopic signature of the granite is attributed largely to the preferential transport and deposition of rare-earth elements during subsolidus re-equilibration of metamict zircon. Hydrothermally deposited zirconium silicate (domain D) has a composition similar to that of highly crystalline Hf-rich zircon but is completely amorphous. This observation emphasizes the need to verify the structural integrity and aqueous durability of hydrothermally deposited zircon before it is used to reconstruct hydrothermal processes.

  6. Halifax Electric 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 on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia: Energy Resources Jump to: navigation,Ohio:Greer County is a countyon State HighwaysHalfwayHalifax Electric

  7. Halifax, Massachusetts: 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 on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia: Energy Resources Jump to: navigation,Ohio:Greer County is a countyon State HighwaysHalfwayHalifax Electricis a

  8. Halifax, Pennsylvania: 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 on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia: Energy Resources Jump to: navigation,Ohio:Greer County is a countyon State HighwaysHalfwayHalifax Electricis

  9. Radiological Scoping Survey of the Scotia Depot, Scotia, NY

    SciTech Connect (OSTI)

    Bailey, E. N.

    2008-02-25T23:59:59.000Z

    The objectives of the radiological scoping survey were to collect adequate field data for use in evaluating the radiological condition of Scotia Depot land areas, warehouses, and support buildings.

  10. THE BIG PICTURE: A "FISHERY SYSTEM APPROACH"

    E-Print Network [OSTI]

    Charles, Anthony

    , and its lengthy history combined with its rather narrow definition have had a negative impact in limiting Charles Management Science / Environmental Studies Saint Mary's University Halifax, Nova Scotia B3H3C3

  11. International Conference on Ocean Energy | Department of Energy

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

    International Conference on Ocean Energy International Conference on Ocean Energy November 4, 2014 1:00PM EST to November 6, 2014 10:00PM EST Halifax, Nova Scotia, Canada http:...

  12. Application to Export Electric Energy OE Docket No. EA-355 Scotia...

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

    Scotia Capital Energyto export electric energy to Canada Application to Export Electric Energy OE Docket No EA-355 Scotia Capital Energy More Documents & Publications EA-355 Scotia...

  13. 24 November 2004 Nova Scotia Utility and Review Board

    E-Print Network [OSTI]

    Hughes, Larry

    ) This letter and its accompanying report discusses NSPI's proposed Domestic Service Tariff price increase and Review Board (UARB) for increases in all its rate classes. In the Domestic Service Tariff, NSPI has Tariff NSPI's Domestic Service Tariff applies to about 418,900 residential customers. An analysis of NSPI

  14. Nova Scotia Topographic Database 1:10000 Received: April 2009

    E-Print Network [OSTI]

    Brownstone, Rob

    include pipelines, and transmission lines. Utilities_Point UT_POINT A point dataset showing features related to utilities. Some examples include tanks, towers, and substations. Utilities_Poly UT_POLY A polygon dataset showing features related to utilities. Some examples include larger tanks, towers

  15. I; Dalhousie University Department of Earth Sciences Hjliijv Nova Scotia

    E-Print Network [OSTI]

    Beaumont, Christopher

    (Gnt) around it A) is under plane polarized light (PPL) and B) is under crossed Nichols (XN). Jennifer), the field of view is approximately 10 mm. A is under PPL and B is under XN. A cleavage is visible as well

  16. Does Nova Scotia have an electric future? Response to

    E-Print Network [OSTI]

    Hughes, Larry

    it comes to energy security and that electricity is one of these challenges. Hydro etc Wind Bioenergy Coal and radical changes in energy markets (IEA, 2007a; NPC, 2007). The cost and availability of crude oil

  17. Towards a new energy strategy for Nova Scotia Response to

    E-Print Network [OSTI]

    Hughes, Larry

    2020 CO2eemissions(Mt) NRCan 2006 Kyoto (2012) EGSPA (2020) Primary electricity Natural gas liquids Natural gas RPP Coal (imp) Coal (dom) Renewables (non-utility) Secure Low carbon High carbon Insecure #12

  18. Air Quality (Nova Scotia, Canada) | Department of Energy

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "ofEarly Career Scientists' ResearchThe OfficeUtility Fed. Government CommercialProgramUtility Fed.

  19. Efficiency Nova Scotia Releases Energy Efficiency Mobile App...

    Energy Savers [EERE]

    it had its first trial run with fifth and sixth graders at an interactive science museum. "Our ultimate goal is to help make energy efficiency normal behavior," said Leanne...

  20. Efficiency Nova Scotia Releases Energy Efficiency Mobile App | 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 Data Center Home Page on Delicious Rank EERE:YearRound-UpHeat PumpRecord ofESPC ENABLE: ECM Summary ECMWearthe Application of AdvancedSystems

  1. Dalhousie University Sustainable Procurement Checklist Dalhousie University (Halifax, NS) has a signed Sustainability Policy and Statement of Principles. Our

    E-Print Network [OSTI]

    Brownstone, Rob

    Dalhousie University Sustainable Procurement Checklist Dalhousie University (Halifax, NS) has a signed Sustainability Policy and Statement of Principles. Our Procurement Policy reflects the importance of sustainability considerations

  2. ANALYSIS OF THE EFFECT OF PRINCIPAL STRESSES IN THE CHARLEVOIX, LOWER ST. LAWRENCE, NORTHERN APPALACHIAN, LAURENTIAN SLOPE AND GRAND BANKS REGIONS ON FAULTS IN NOVA

    E-Print Network [OSTI]

    Beaumont, Christopher

    Brunswick. Point Lepreau is home to a nuclear power plant and seismic risk information in the Northern. Lawrence, offshore Nova Scotia and the Grand Banks. Earthquake and focal mechanism data were obtained from. In the Grand Banks region, stress orientations seem random and the cause of earthquakes is unknown. Offshore

  3. Keeping the lead: How to strengthen shark conservation and management policies in Canada

    E-Print Network [OSTI]

    Myers, Ransom A.

    Keeping the lead: How to strengthen shark conservation and management policies in Canada Aurelie, Canada B3H 4J1 b WWF-Canada, Halifax, Nova Scotia, Canada B3J 1P3 a r t i c l e i n f o Article history: Biodiversity conservation Bycatch Canada Fisheries management Sharks Threatened species a b s t r a c

  4. METEOROLOGICAL APPLICATIONS Meteorol. Appl. 18: 383405 (2011)

    E-Print Network [OSTI]

    Duck, Thomas J.

    2011-01-01T23:59:59.000Z

    solar cycles combined with high surface albedo and long wave emissivity. The lim- ited geographical properties, can be obtained by using a light detection and ranging Correspondence to: G. J. Nott, Department of Physics and Atmo- spheric Science, 1459 Oxford Street, Dalhousie University, Halifax, Nova Scotia B3H 4R2

  5. Ventilation and Air Quality in Indoor Ice Skating Arenas Chunxin Yang, Ph.D.1

    E-Print Network [OSTI]

    Chen, Qingyan "Yan"

    There are thousands of indoor ice rink arenas in the United States, Canada, and Europe. The combustion byproducts from. A field survey of ten ice rink arenas in Greater Boston and Halifax, Nova Scotia indicates that the fuel environment, ventilation INTRODUCTION There are several thousands ice rink arenas in the United States

  6. 1 | P a g e ReThink! Sustainability Manual and Activities

    E-Print Network [OSTI]

    Brownstone, Rob

    to build a sustainable Dalhousie? In 2008, a focused effort to systematically tackle sustainability issues1 | P a g e ReThink! Sustainability Manual and Activities Office of Sustainability Dalhousie University 1226 Le Marchant St. Halifax, Nova Scotia B3H 3P7 Phone 19024947448 www.sustainability

  7. The completeness of taxonomic inventories for describing the global diversity and

    E-Print Network [OSTI]

    Myers, Ransom A.

    The completeness of taxonomic inventories for describing the global diversity and distribution University, Halifax, Nova Scotia, Canada B3H 4J1 Taxonomic inventories (or species censuses) are the most to the completeness of taxonomic inventories can have far-reaching consequences. Here, we used the largest publicly

  8. Atmos. Chem. Phys., 11, 1176111775, 2011 www.atmos-chem-phys.net/11/11761/2011/

    E-Print Network [OSTI]

    Martin, Randall

    Atmos. Chem. Phys., 11, 11761­11775, 2011 www.atmos-chem-phys.net/11/11761/2011/ doi:10.5194/acp-11-11761-2011 © Author(s) 2011. CC Attribution 3.0 License. Atmospheric Chemistry and Physics Novel application, Canada 3Department of Physics and Atmospheric Science, Dalhousie University, Halifax, Nova Scotia, Canada

  9. NOvA Groundbreaking

    SciTech Connect (OSTI)

    2009-05-07T23:59:59.000Z

    May 1, 2009, marked the groundbreaking for the NOvA neutrino experiment located in Ash River, Minnesota.

  10. Piping Plover Status in Nova Scotia Related to Its Reproductive and Behavioral Responses to Human Disturbance

    E-Print Network [OSTI]

    Stephen P. Flemming, Roland D. Chiasson, Peter C. Smith, Peter J. Austin-Smith, Robert P. Bancroft ...

  11. Space Heating Trends in Prince Edward Island and Nova Scotia1 Mandeep Dhaliwal and Larry Hughes

    E-Print Network [OSTI]

    Hughes, Larry

    . 1 Introduction Worldwide, economies are facing the problem of higher energy costs. This, coupled to reduce its energy intensity. One such sector is the residential sector, which though consumed only 17 percent of Canada's total secondary end use in 2003 (NRCan, 2006), has a large potential for reduction

  12. Freezing in the dark: Energy security and heating emergencies in Nova Scotia

    E-Print Network [OSTI]

    Hughes, Larry

    is it important? ­ Economic growth ­ Poverty reduction ­ Political stability Sources: IEA, 2001; "Energy Security (especially heating): ­ Review existing demand, services, and potential secure su

  13. MERCURY FLUX MEASUREMENTS OVER AIR AND WATER IN KEJIMKUJIK NATIONAL PARK, NOVA SCOTIA

    E-Print Network [OSTI]

    Folkins, Ian

    temperature, and this dependence was well described by an Arrhenius-type expression with an activation energy from the atmosphere are wet and dry deposition. Once entering a watershed via precipitation and dry deposition mercury can be transformed to more Water, Air, and Soil Pollution 122: 183­202, 2000. © 2000

  14. Potential Urban Forest Carbon Sequestration and Storage Capacities in Burnside Industrial Park, Nova Scotia.

    E-Print Network [OSTI]

    Walsh, Alison

    2012-01-01T23:59:59.000Z

    ??Urban and industrial settings represent potential areas for increased carbon (C) sequestration and storage through intensified tree growth. Consisting of an estimated 1270 ha of (more)

  15. MHK Projects/OpenHydro Bay of Fundy Nova Scotia CA | 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 on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia: Energy Resources Jump to:46 - 429Lacey,(MonasterLowell Point, Alaska:LuzClick hereInformation OSUMaui

  16. Soil Profile CO2 concentrations in forested and clear cut sites in Nova Scotia, Canada

    E-Print Network [OSTI]

    Beltrami, Hugo

    concentration; Forest management; Soil temperature; Soil moisture; Soil texture 1. Introduction Subsurface2 production and transport caused by the complex interactions between biotic and environmental content, and soil physical characteristics (transport factors) mainly determine the variability

  17. Research Review NOVA and Astronomy

    E-Print Network [OSTI]

    van Rooij, Robert

    Research Review NOVA and Astronomy 2010 October 2011 #12;2 QANU / Research Review NOVA and Astronomy Quality Assurance Netherlands Universities (QANU) Catharijnesingel 56 PO Box 8035 3503 RA Utrecht NOVA and Astronomy 3 Contents: Update 5 1. The Review Committee and Review Procedures 7 2. Remarks

  18. NOvA First Blast

    SciTech Connect (OSTI)

    2009-07-22T23:59:59.000Z

    Blasting began at the future site of the NOvA detector facility near Ash River, Minnesota, on Monday, July 20.

  19. Funding for the food miles project was provided through Agriculture and Agri-Food Canada's Advancing Canadian Agriculture and Agri-Food (ACAAF) Program. In Nova Scotia the program is delivered by Agri-Futures Nova Scotia.

    E-Print Network [OSTI]

    Peak, Derek

    Funding for the food miles project was provided through Agriculture and Agri-Food Canada.................................................................... 7 Energy .................................................................................. 9 Self grown? With these two questions at the fore, combing through various statistics and reports

  20. This project was funded by Nova Scotia Power. The views and opinions expressed in the report are those of the Do Electric Vehicles Make Carbon-Sense in Nova Scotia?

    E-Print Network [OSTI]

    Hughes, Larry

    the EPRI report, Environmental Assessment of Plug-In Hybrid Electric Vehicles, Volume 1: Nationwide Greenhouse Gas Emissions (EPRI, 2007), which determines annual emissions based on the vehicle's Utility Factor (UF), the distance driven electrically and non-electrically (i.e., with gasoline). In the EPRI

  1. Projected impacts of climate change on species distribution in the Acadian Forest region of eastern Nova Scotia

    E-Print Network [OSTI]

    .e., hydrological cycle and earth- sun geometry. Growing degree days and mean air temperature are basedProjected impacts of climate change on species distribution in the Acadian Forest region of eastern on processing remote sensing data, mean air temperatures serves as one of several inputs to model calculation

  2. The flow of the Antarctic Circumpolar Current over the North Scotia Ridge

    E-Print Network [OSTI]

    Stevens, David

    obstacle to the flow of deep water, with the ma- jority of the deep water passing through the 3100 m deep. Weddell Sea Deep Water was not detected passing through Shag Rocks Passage, contrary to some previous- sured during the North Scotia Ridge Overflow Project, which included the first extensive hydrographic

  3. Argonne's Vilas Pol on NOVA!

    ScienceCinema (OSTI)

    None

    2013-04-19T23:59:59.000Z

    Can innovations in materials science help clean up our world? Argonne's material scientist Vilas Pol guest starred on NOVA's "Making Stuff: Cleaner," where David Pogue explored the rapidly-developing science and business of clean energy.

  4. NOvA Experiment - The Local Community

    ScienceCinema (OSTI)

    Deb Wieber

    2010-01-08T23:59:59.000Z

    Local proprietors Steve and Deb Wieber discuss the impact of the NOvA experiment on their community.

  5. NOvA Experiment - The Local Community

    SciTech Connect (OSTI)

    Deb Wieber

    2009-05-14T23:59:59.000Z

    Local proprietors Steve and Deb Wieber discuss the impact of the NOvA experiment on their community.

  6. Lesson learned from (some) recurrent novae

    E-Print Network [OSTI]

    Mason, Elena

    2013-01-01T23:59:59.000Z

    In this talk we present early decline and nebular spectra of the recurrent novae YY Dor and nova LMC 2009. These and a few other recurrent novae of the same type, share similar spectral characteristics and evolution. We will critically discuss those common features suggesting same white dwarf progenitor and post outburst phases for all of them.

  7. Nuclear Thermometers for Classical Novae

    E-Print Network [OSTI]

    Downen, Lori N; Jos, Jordi; Starrfield, Sumner

    2012-01-01T23:59:59.000Z

    Classical novae are stellar explosions occurring in binary systems, consisting of a white dwarf and a main sequence companion. Thermonuclear runaways on the surface of massive white dwarfs, consisting of oxygen and neon, are believed to reach peak temperatures of several hundred million kelvin. These temperatures are strongly correlated with the underlying white dwarf mass. The observational counterparts of such models are likely associated with outbursts that show strong spectral lines of neon in their shells (neon novae). The goals of this work are to investigate how useful elemental abundances are for constraining the peak temperatures achieved during these outbursts and determine how robust "nova thermometers" are with respect to uncertain nuclear physics input. We present updated observed abundances in neon novae and perform a series of hydrodynamic simulations for several white dwarf masses. We find that the most useful thermometers, N/O, N/Al, O/S, S/Al, O/Na, Na/Al, O/P, and P/Al, are those with the s...

  8. THE NOVA RATE IN NGC 2403

    SciTech Connect (OSTI)

    Franck, J. R.; Shafter, A. W. [Department of Astronomy, San Diego State University, San Diego, CA 92182 (United States); Hornoch, K. [Astronomical Institute, Academy of Sciences, CZ-251 65 Ondrejov (Czech Republic); Misselt, K. A. [Steward Observatory, University of Arizona, Tucson, AZ 85721 (United States)

    2012-11-20T23:59:59.000Z

    A multi-epoch H{alpha} survey of the late-type spiral galaxy NGC 2403 has been completed in order to determine its nova rate. A total of nine nova candidates were discovered in 48 nights of observation with two different telescopes over the period from 2001 February to 2012 April. After making corrections for temporal coverage and spatial completeness, a nova rate of 2.0{sup +0.5} {sub -0.3} yr{sup -1} was determined. This rate corresponds to a luminosity-specific nova rate of 2.5 {+-} 0.7 novae per year per 10{sup 10} L {sub Sun ,K}. This value is consistent with that of the similar Hubble-type galaxy, M33, and is typical of those of other galaxies with measured nova rates, which range from 1 to 3 novae per year per 10{sup 10} L {sub Sun ,K}.

  9. AT Cnc: A SECOND DWARF NOVA WITH A CLASSICAL NOVA SHELL

    SciTech Connect (OSTI)

    Shara, Michael M.; Mizusawa, Trisha; Zurek, David [Department of Astrophysics, American Museum of Natural History, Central Park West at 79th Street, New York, NY 10024-5192 (United States); Wehinger, Peter [Steward Observatory, the University of Arizona, 933 North Cherry Avenue, Tucson, AZ 85721 (United States); Martin, Christopher D.; Neill, James D.; Forster, Karl [Department of Physics, Math and Astronomy, California Institute of Technology, 1200 East California Boulevard, Mail Code 405-47, Pasadena, CA 91125 (United States); Seibert, Mark [Observatories of the Carnegie Institution of Washington, 813 Santa Barbara Street, Pasadena, CA 91101 (United States)

    2012-10-20T23:59:59.000Z

    We are systematically surveying all known and suspected Z Cam-type dwarf novae for classical nova shells. This survey is motivated by the discovery of the largest known classical nova shell, which surrounds the archetypal dwarf nova Z Camelopardalis. The Z Cam shell demonstrates that at least some dwarf novae must have undergone classical nova eruptions in the past, and that at least some classical novae become dwarf novae long after their nova thermonuclear outbursts, in accord with the hibernation scenario of cataclysmic binaries. Here we report the detection of a fragmented 'shell', 3 arcmin in diameter, surrounding the dwarf nova AT Cancri. This second discovery demonstrates that nova shells surrounding Z Cam-type dwarf novae cannot be very rare. The shell geometry is suggestive of bipolar, conical ejection seen nearly pole-on. A spectrum of the brightest AT Cnc shell knot is similar to that of the ejecta of the classical nova GK Per, and of Z Cam, dominated by [N II] emission. Galaxy Evolution Explorer FUV imagery reveals a similar-sized, FUV-emitting shell. We determine a distance of 460 pc to AT Cnc, and an upper limit to its ejecta mass of {approx}5 Multiplication-Sign 10{sup -5} M {sub Sun }, typical of classical novae.

  10. NOVA Making Stuff Season 2

    SciTech Connect (OSTI)

    Leombruni, Lisa; Paulsen, Christine Andrews

    2014-12-12T23:59:59.000Z

    Over the course of four weeks in fall 2013, 11.7 million Americans tuned in to PBS to follow host David Pogue as he led them in search of engineering and scientific breakthroughs poised to change our world. Levitating trains, quantum computers, robotic bees, and bomb-detecting plantsthese were just a few of the cutting-edge innovations brought into the living rooms of families across the country in NOVAs four-part series, Making Stuff: Faster, Wilder, Colder, and Safer. Each of the four one-hour programs gave viewers a behind-the-scenes look at novel technologies poised to change our worldshowing them how basic research and scientific discovery can hold the keys to transforming how we live. Making Stuff Season 2 (MS2) combined true entertainment with educational value, creating a popular and engaging series that brought accessible science into the homes of millions. NOVAs goal to engage the public with such technological innovation and basic research extended beyond the broadcast series, including a variety of online, educational, and promotional activities: original online science reporting, web-only short-form videos, a new online quiz-game, social media engagement and promotion, an educational outreach toolkit for science educators to create their own makerspaces, an online community of practice, a series of nationwide Innovation Cafs, educator professional development, a suite of teacher resources, an Idealab, participation in national conferences, and specialized station relation and marketing. A summative evaluation of the MS2 project indicates that overall, these activities helped make a significant impact on the viewers, users, and participants that NOVA reached. The final evaluation conducted by Concord Evaluation Group (CEG) confidently concluded that the broadcast, website, and outreach activities were successful at achieving the projects intended impacts. CEG reported that the MS2 series and website content were successful in raising awareness and sparking interest in innovation, and increased public awareness that basic research leads to technological innovation; this interest was also sustained over a six month period. Efforts to create an online community of practice were also successful: the quality of collaboration increased, and community members felt supported while using Maker pedagogy. These findings provide clear evidence that large-scale science media projects like MS2 are an effective means of moving the needle on attitudes about and excitement for science. NOVAs broadcast audience and ratings have always indicated that a large portion of the population is interested in and engages with educational science media on a weekly basis. Yet these evaluation results provide the empirical evidence that beyond being capable of attracting, maintaining, and growing a dedicated group of citizens interested in science, these showswith their diverse content provided on a variety of media channelsare capable of sparking new interest in science, raising public awareness of the importance of science, and maintaining and growing that interest over time. In a country where approximately a quarter of the population doesnt know the earth rotates around the sun,1 roughly half still dont accept evolution,2 and about 20% dont think climate change is happening,3 the importance of these findings cannot be overstated. The success of MS2 suggests that large-scale media projects dedicated to and linked by coverage of scientific big ideas are an effective means of shifting public opinion onand improving understanding ofscience. REFERENCES 1, 2 National Science Foundation, Science and Engineering Indicators (2014). Chapter 7: Science and Technology: Public Attitudes and Understanding. 3 Leiserowitz, A., Maibach, E., Roser-Renouf, C., Feinberg, G., & Rosenthal, S. (2014) Climate change in the American mind: April, 2014. Yale University and George Mason University. New Haven, CT: Yale Project on Climate Change Communication.

  11. NOVA Portal: Submit VASP Jobs to Carver via the Web

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

    NOVA Portal: Submit VASP Jobs to Carver via the Web NOVA Portal: Submit VASP Jobs to Carver via the Web May 11, 2012 by Francesca Verdier (0 Comments) NOVA is an experimental web...

  12. Horticultural Survey of Gulf Coast.

    E-Print Network [OSTI]

    Green, Edward C.

    1907-01-01T23:59:59.000Z

    , onions. Brownsvil1e.-lst, cabbage; 2nd, onions; 3rd, Irish potatoes; 4th, CU- cumbers. Sarlta Maria.-lst, onions; 2nd, cucumbers; 3rd, beans; 4th, cabbage. While there is .some difference of opinion among inaiuiduals as to the relative value..., and to Halifax, Nova Scotia, as well as to other markets less distant. SANTA MARIA. For rapid development from 'brush and cactus to in- tensified profitable gardening Kingsville made a two-year record which probably had never been equalled up to that time...

  13. The NOvA Technical Design Report

    SciTech Connect (OSTI)

    Ayres, D.S.; Drake, G.R.; Goodman, M.C.; Grudzinski, J.J.; Guarino, V.J.; Talaga, R.L.; Zhao, A.; /Argonne; Stamoulis, P.; Stiliaris, E.; Tzanakos, G.; Zois, M.; /Athens U. /Caltech /UCLA /Fermilab /College de France /Harvard U. /Indiana U. /Lebedev Inst. /Michigan State U. /Minnesota U., Duluth /Minnesota U.

    2007-10-08T23:59:59.000Z

    Technical Design Report (TDR) describes the preliminary design of the NOvA accelerator upgrades, NOvA detectors, detector halls and detector sites. Compared to the March 2006 and November 2006 NOvA Conceptual Design Reports (CDR), critical value engineering studies have been completed and the alternatives still active in the CDR have been narrowed to achieve a preliminary technical design ready for a Critical Decision 2 review. Many aspects of NOvA described this TDR are complete to a level far beyond a preliminary design. In particular, the access road to the NOvA Far Detector site in Minnesota has an advanced technical design at a level appropriate for a Critical Decision 3a review. Several components of the accelerator upgrade and new neutrino detectors also have advanced technical designs appropriate for a Critical Decision 3a review. Chapter 1 is an Executive Summary with a short description of the NOvA project. Chapter 2 describes how the Fermilab NuMI beam will provide a narrow band beam of neutrinos for NOvA. Chapter 3 gives an updated overview of the scientific basis for the NOvA experiment, focusing on the primary goal to extend the search for {nu}{sub {mu}} {yields} {nu}{sub e} oscillations and measure the sin{sup 2}(2{theta}{sub 13}) parameter. This parameter has not been measured in any previous experiment and NOvA would extend the search by about an order of magnitude beyond the current limit. A secondary goal is to measure the dominant mode oscillation parameters, sin{sup 2}(2{theta}{sub 23}) and {Delta}m{sub 32}{sup 2} to a more precise level than previous experiments. Additional physics goals for NOvA are also discussed. Chapter 4 describes the Scientific Design Criteria which the Fermilab accelerator complex, NOvA detectors and NOvA detector sites must satisfy to meet the physics goals discussed in Chapter 3. Chapter 5 is an overview of the NOvA project. The changes in the design relative to the NOvA CDR are discussed. Chapter 6 summarizes the NOvA design performance relative to the Design Criteria set out in Chapter 4. Chapter 7 presents the Work Breakdown Structure dictionary at Level 3 and the Milestone dictionary. Chapters 8 through 17 then take each Level 2 WBS element of the NOvA project and present each part of the design in more detail than the overview given in Chapter 5. Specific technical design criteria are delineated for each part of the project in addition to the scientific design criteria outlined in Chapter 4. Changes in the design since the NOvA CDR are discussed in detail. The work remaining to bring each part of this preliminary design to a final design is outlined. Appendix A is a guide to other NOvA Project documentation with links to those documents.

  14. Nova laser alignment control system

    SciTech Connect (OSTI)

    Van Arsdall, P.J.; Holloway, F.W.; McGuigan, D.L.; Shelton, R.T.

    1984-03-29T23:59:59.000Z

    Alignment of the Nova laser requires control of hundreds of optical components in the ten beam paths. Extensive application of computer technology makes daily alignment practical. The control system is designed in a manner which provides both centralized and local manual operator controls integrated with automatic closed loop alignment. Menudriven operator consoles using high resolution color graphics displays overlaid with transport touch panels allow laser personnel to interact efficiently with the computer system. Automatic alignment is accomplished by using image analysis techniques to determine beam references points from video images acquired along the laser chain. A major goal of the design is to contribute substantially to rapid experimental turnaround and consistent alignment results. This paper describes the computer-based control structure and the software methods developed for aligning this large laser system.

  15. EIS-0339: Presidential Permit Application, GenPower 500 kV Submarine Electric Transmission Cable from Nova Scotia to New York

    Broader source: Energy.gov [DOE]

    The Department of Energy (DOE) announced its intent to prepare an Environmental Impact Statement (EIS) in accordance with the National Environmental Policy Act of 1969 (NEPA) for GenPower New York, L.L.C.s (GenPower) request for a Presidential permit for a proposed international electric transmission line.

  16. A 1600-year history of the Labrador Current off Nova Scotia Received: 11 June 2002 / Accepted: 3 January 2003 / Published online: 8 April 2003

    E-Print Network [OSTI]

    Sachs, Julian P.

    is one of the two main sources for the Labrador Current, warming and melting of ice caps in that region may have affected Labrador Current properties. Before this recent warming, sea surface temperature

  17. AN EXTENDED GRID OF NOVA MODELS. III. VERY LUMINOUS, RED NOVAE

    SciTech Connect (OSTI)

    Shara, Michael M.; Zurek, David [Department of Astrophysics, American Museum of Natural History, Central Park West and 79th Street, New York, NY 10024-5192 (United States); Yaron, Ofer; Prialnik, Dina; Kovetz, Attay [Department of Geophysics and Planetary Sciences, Sackler Faculty of Exact Sciences, Tel Aviv University, Ramat Aviv 69978 (Israel)

    2010-12-10T23:59:59.000Z

    Extremely luminous, red eruptive variables like RV in M31 are being suggested as exemplars of a new class of astrophysical objects. Our greatly extended series of nova simulations shows that classical nova models can produce very red, luminous eruptions. In a poorly studied corner of three-dimensional nova parameter space (very cold, low-mass white dwarfs, accreting at very low rates) we find bona fide classical novae that are very luminous and red because they eject very slowly moving, massive envelopes. A crucial prediction of these nova models-in contrast to the predictions of merging star ('mergeburst') models-is that a hot remnant, the underlying white dwarf, will emerge after the massive ejected envelope has expanded enough to become optically thin. This blue remnant must fade on a timescale of decades-much faster than a 'mergeburst', which must fade on timescales of millennia or longer. Furthermore, the cooling nova white dwarf and its expanding ejecta must become redder in the years after eruption, while a contracting mergeburst must become hotter and bluer. We predict that red novae will always brighten to L {approx} 1000 L{sub sun} for about one year before rising to the maximum luminosity at L {approx} 10{sup 6}-10{sup 7} L{sub sun}. The maximum luminosity attainable by a nova is likely to be L {approx} 10{sup 7} L{sub sun}, corresponding to M {approx} -12. In an accompanying paper, we describe a fading, luminous blue candidate for the remnant of M31-RV; it is observed with the Hubble Space Telescope to be compatible only with the nova model.

  18. A SPECTROSCOPIC AND PHOTOMETRIC SURVEY OF NOVAE IN M31

    SciTech Connect (OSTI)

    Shafter, A. W. [Department of Astronomy, San Diego State University, San Diego, CA 92182 (United States); Darnley, M. J.; Bode, M. F.; Hounsell, R. A. [Astrophysics Research Institute, Liverpool John Moores University, Birkenhead CH41 1LD (United Kingdom); Hornoch, K. [Astronomical Institute, Academy of Sciences, CZ-251 65 Ondrejov (Czech Republic); Filippenko, A. V.; Chornock, R. [Department of Astronomy, University of California, Berkeley, CA 94720-3411 (United States); Ciardullo, R. [Department of Astronomy and Astrophysics, Pennsylvania State University, 525 Davey Lab, University Park, PA 16802 (United States); Misselt, K. A. [Steward Observatory, University of Arizona, Tucson, AZ 85721 (United States); Matheson, T. [National Optical Astronomy Observatory, 950 North Cherry Avenue, Tucson, AZ 85719-4933 (United States)

    2011-06-10T23:59:59.000Z

    We report the results of a multi-year spectroscopic and photometric survey of novae in M31 that resulted in a total of 53 spectra of 48 individual nova candidates. Two of these, M31N 1995-11e and M31N 2007-11g, were revealed to be long-period Mira variables, not novae. These data double the number of spectra extant for novae in M31 through the end of 2009 and bring to 91 the number of M31 novae with known spectroscopic classifications. We find that 75 novae (82%) are confirmed or likely members of the Fe II spectroscopic class, with the remaining 16 novae (18%) belonging to the He/N (and related) classes. These numbers are consistent with those found for Galactic novae. We find no compelling evidence that spectroscopic class depends sensitively on spatial position or population within M31 (i.e., bulge versus disk), although the distribution for He/N systems appears slightly more extended than that for the Fe II class. We confirm the existence of a correlation between speed class and ejection velocity (based on line width), as in the case of Galactic novae. Follow-up photometry allowed us to determine light-curve parameters for a total of 47 of the 91 novae with known spectroscopic class. We confirm that more luminous novae generally fade the fastest and that He/N novae are typically faster and brighter than their Fe II counterparts. In addition, we find a weak dependence of nova speed class on position in M31, with the spatial distribution of the fastest novae being slightly more extended than that of slower novae.

  19. CIRCUMSTELLAR SHELL FORMATION IN SYMBIOTIC RECURRENT NOVAE

    SciTech Connect (OSTI)

    Moore, Kevin; Bildsten, Lars [Department of Physics, Broida Hall, University of California, Santa Barbara, CA 93106 (United States)

    2012-12-20T23:59:59.000Z

    We present models of spherically symmetric recurrent nova shells interacting with circumstellar material (CSM) in a symbiotic system composed of a red giant (RG) expelling a wind and a white dwarf accreting from this material. Recurrent nova eruptions periodically eject material at high velocities ({approx}> 10{sup 3} km s{sup -1}) into the RG wind profile, creating a decelerating shock wave as CSM is swept up. High CSM densities cause the shocked wind and ejecta to have very short cooling times of days to weeks. Thus, the late-time evolution of the shell is determined by momentum conservation instead of energy conservation. We compute and show evolutionary tracks of shell deceleration, as well as post-shock structure. After sweeping up all the RG wind, the shell coasts at a velocity {approx}100 km s{sup -1}, depending on system parameters. These velocities are similar to those measured in blueshifted CSM from the symbiotic nova RS Oph, as well as a few Type Ia supernovae that show evidence of CSM, such as 2006X, 2007le, and PTF 11kx. Supernovae occurring in such systems may not show CSM interaction until the inner nova shell gets hit by the supernova ejecta, days to months after the explosion.

  20. NOvA: Exploring Neutrino Mysteries

    ScienceCinema (OSTI)

    Vahle, Tricia; Messier, Mark

    2014-08-12T23:59:59.000Z

    Neutrinos are a mystery to physicists. They exist in three different flavors and mass states and may be able to give hints about the origins of the matter-dominated universe. A new long-baseline experiment led by Fermilab called NOvA may provide some answers.

  1. Very high energy gamma-ray follow-up observations of novae and dwarf novae with the MAGIC telescopes

    E-Print Network [OSTI]

    Sitarek, J; Lopez-Coto, R; Wilhelmi, E de Ona; Desiante, R; Longo, F; Hays, E

    2015-01-01T23:59:59.000Z

    In the last few years the Fermi -LAT instrument has detected GeV gamma-ray emission from a few novae. Such GeV emission can be interpreted in terms of an inverse Compton process of electrons accelerated in a shock. It is expected that hadrons can be accelerated in the same conditions, but reaching much higher energies. They can produce a second component in the gamma-ray spectrum at TeV energies. We performed follow-up observations of selected novae and dwarf novae in a search of the second component in the gamma-ray spectrum. This can shed light on the acceleration process of leptons and hadrons in nova explosions. We have performed observations with the MAGIC telescopes of 3 sources, a symbiotic nova YY Her, a dwarf nova ASASSN-13ax and a classical nova V339 Del shortly after their outbursts.

  2. Hubble Space Telescope Observations of Novae in M49

    E-Print Network [OSTI]

    Laura Ferrarese; Patrick Cote; Andres Jordan

    2003-09-30T23:59:59.000Z

    A search for novae in M49 (NGC 4472) has been undertaken with the Hubble Space Telescope. A 55-day observing campaign in F555W (19 epochs) and F814W (five epochs) has led to the discovery of nine novae. We find that M49 may be under-abundant in slow, faint novae relative to the Milky Way and M31. Instead, the decline rates of the M49 novae are remarkably similar to those of novae in the LMC. This fact argues against a simple classification of novae in "bulge" and "disk" sub-classes. We examine the Maximum-Magnitude versus Rate of Decline (MMRD) relation for novae in M49, finding only marginal agreement with the Galactic and M31 MMRD relations. A recalibration of the Buscombe-de Vaucouleurs relation gives an absolute magnitude 15 days past maximum of M_{V,15} = -6.36+/-0.19, which is substantially brighter than previous calibrations based on Galactic novae. Monte Carlo simulations yield a global nova rate for M49 of 100{+35}{-30} per year, and a luminosity-specific nova rate in the range \

  3. GEOPHYSICAL RESEARCH LETTERS, VOL. 40, 16, doi:10.1002/2013GL058114, 2013 Surface exchange between the Weddell and Scotia Seas

    E-Print Network [OSTI]

    Thompson, Andrew

    GEOPHYSICAL RESEARCH LETTERS, VOL. 40, 1­6, doi:10.1002/2013GL058114, 2013 Surface exchange between and Scotia Seas, Geophys. Res. Lett., 40, doi:10.1002/2013GL058114. 1. Introduction [2] The intermittent. All Rights Reserved. 0094-8276/13/10.1002/2013GL058114 [3] The intricate structure of the Weddell Sea

  4. Nova power systems: status and operating experience

    SciTech Connect (OSTI)

    Whitham, K.; Merritt, B.T.; Gritton, D.G.; Smart, A.J.; Holloway, R.W.; Oicles, J.A.

    1983-11-28T23:59:59.000Z

    This paper describes the pulse power systems that are used in these lasers; the status and the operating experiences. The pulsed power system for the Nova Laser is comprised of several distinct technology areas. The large capacitor banks for driving flashlamps that excite the laser glass is one area, the fast pulsers that drive pockels cell shutters is another area, and the contol system for the pulsed power is a third. This paper discusses the capacitor banks and control systems.

  5. Novas Descobertas sobre o Sistema Solar

    E-Print Network [OSTI]

    dos Santos, C.A.

    Novas Descobertas sobre o Sistema Solar FIS 2009 Explorando o Universo: dos Quarks aos Quasares da temperatura da Terra A forma do espectro solar (máximo de emissão no visível) também é muito energia para a Terra, a Terra está em equilíbrio radioactivo com o Sol, este é um dos fatores

  6. Optical and EUV light curves of dwarf nova outbursts

    SciTech Connect (OSTI)

    Mauche, C W; Mattei, J A; Bateson, F M

    2000-11-15T23:59:59.000Z

    We combine AAVSO and VSS/RASNZ optical and Extreme Ultraviolet Explorer EUV light curves of dwarf novae in outburst to place constraints on the nature of dwarf nova outbursts. From the observed optical-EUV time delays of {approx} 0.75-1.5 days, we show that the propagation velocity of the dwarf nova instability heating wave is {approx} 3 km s{sup -1}.

  7. A SPITZER SURVEY OF NOVAE IN M31

    SciTech Connect (OSTI)

    Shafter, A. W.; Rubin, M. [Department of Astronomy, San Diego State University, San Diego, CA 92182 (United States); Bode, M. F.; Darnley, M. J. [Astrophysics Research Institute, Liverpool John Moores University, Birkenhead CH41 1LD (United Kingdom); Misselt, K. A. [Steward Observatory, University of Arizona, Tucson, AZ 85721 (United States); Hornoch, K. [Astronomical Institute, Academy of Sciences, CZ-251 65 Ondrejov (Czech Republic)

    2011-01-20T23:59:59.000Z

    We report the results of the first infrared survey of novae in M31. Both photometric and spectroscopic observations of a sample of 10 novae (M31N 2006-09c, 2006-10a, 2006-10b, 2006-11a, 2007-07f, 2007-08a, 2007-08d, 2007-10a, 2007-11d, and 2007-11e) were obtained with the Spitzer Space Telescope. The observations, which were obtained between {approx}3 and {approx}7 months after discovery, revealed evidence for dust formation in two of the novae: M31N 2006-10a and (possibly) 2007-07f, and [Ne II] 12.8 {mu}m line emission in a third (2007-11e). The Spitzer observations were supplemented with ground-based optical photometric and spectroscopic data that were used to determine the speed classes and spectroscopic types of the novae. After including data for dust-forming Galactic novae, we show that dust formation timescales are correlated with nova speed class in that dust typically forms earlier in faster novae. Our failure to detect the signature of dust formation in most of our M31 sample is likely a result of the relatively long delay between nova eruption and our Spitzer observations. The two novae for which we found evidence of dust formation were the two 'slowest' novae in our sample. Finally, as expected, we found that the majority of the novae in our sample belong to the Fe II spectroscopic class, with only one clear example of the He/N class (M31N 2006-10b). Typical of an He/N system, M31N 2006-10b was the fastest nova in our sample, not detected with the IRS, and just barely detected in three of the IRAC bands when it was observed {approx}4 months after eruption.

  8. ccpi-petra nova | netl.doe.gov

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

    ccpi-petra nova Industrial Carbon Capture and Storage Clean Coal Power Initiative Power Plant Improvement Initiative Clean Coal Technology Demonstration Program FutureGen Petra...

  9. Explosive lithium production in the classical nova V339 Del (Nova Delphini 2013)

    E-Print Network [OSTI]

    Tajitsu, Akito; Naito, Hiroyuki; Arai, Akir; Aoki, Wako

    2015-01-01T23:59:59.000Z

    The origin of lithium (Li) and its production process have long been an unsettled question in cosmology and astrophysics. Candidates environments of Li production events or sites suggested by previous studies include big bang nucleosynthesis, interactions of energetic cosmic rays with interstellar matter, evolved low mass stars, novae, and supernova explosions. Chemical evolution models and observed stellar Li abundances suggest that at least half of the present Li abundance may have been produced in red giants, asymptotic giant branch (AGB) stars, and novae. However, no direct evidence for the supply of Li from stellar objects to the Galactic medium has yet been found. Here we report on the detection of highly blue-shifted resonance lines of the singly ionized radioactive isotope of beryllium, $^{7}$Be, in the near ultraviolet (UV) spectra of the classical nova V339 Del (Nova Delphini 2013). Spectra were obtained 38 to 48 days after the explosion. $^{7}$Be decays to form $^{7}$Li within a short time (half-li...

  10. Hopkins Ultraviolet Telescope Observations of Nova Circini 1995 and Nova Aquilae 1995

    E-Print Network [OSTI]

    companion star undergoes a thermonuclear runaway. Accurate abundance information is important as a diagnostic of this thermonuclear runaway, and of the initial conditions which produce the runaway. Enhanced carbon, nitrogen, and oxygen (CNO) abundances are necessary in fast novae for thermonuclear runaway

  11. Api Nova Energia Srl | 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 on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of Inspector GeneralDepartmentAUDIT REPORTOpenWendeGuo Feng Bio Energy Co Ltd Jump to:SummariesApi Nova Energia

  12. NovaTorque Inc | 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 on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 No revision hasInformation Earth's HeatMexico:CommunityNorthwest Basin and RangeNorventoNovaTorque Inc Jump

  13. NovaTorque | 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 on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 No revision hasInformation Earth's HeatMexico:CommunityNorthwest Basin and RangeNorventoNovaTorque Inc

  14. Spectra Nova Technologies Inc | 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 on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia:FAQ < RAPID Jump to:Seadov Pty Ltd JumpGTZHolland, Illinois:5717551°FarmsSES Jump to: navigation,Spectra Nova

  15. Nova V5116 Sgr and searching for superhumps in nova remnants

    E-Print Network [OSTI]

    A. Dobrotka; A. Retter; A. Liu

    2007-10-30T23:59:59.000Z

    We present the period analysis of unfiltered photometric observations of V5116 Sgr (Nova Sgr 2005 #2) and we search for superhump candidates in novae remnants. The PDM method for period analysis is used. The masses of the novae componets are estimated from the secondary mass -- orbital period and primary mass -- decline time relations. We found that 13 nights of V5116 Sgr observations in the year 2006 are modulated with a period of $0.1238 \\pm 0.0001$ d ($2.9712 \\pm 0.0024$ h). Following the shape of the phased light curves and no apparent change in the value of the periodicity in different subsamples of the data, we interpret the period as orbital in nature. The binary system then falls within the period gap of the orbital period distribution of cataclysmic variables. From the maximum magnitude -- rate of decline relation, we estimate the maximum absolute visual magnitude of $M_{\\rm Vmax} = -8.85 \\pm 0.04$ mag using the measured value of decline $t_{\\rm 2} = 6.5 \\pm 1.0$ d. The mass-period relation for cataclysmic variables yields a secondary mass estimate of about $0.26 \\pm 0.05 {\\rm M}_{\\rm \\odot}$. We propose that V5116 Sgr is a high inclination system showing an irradiation effect of the secondary star. No fully developed accretion disc up to the tidal radius with the value lower than $3.5 10^{10}$ cm is probable. The mass ratio was estimated in a few novae and the presence or absence of superhumps in these systems was compared with the mass ratio limit for superhumps of about 0.35. We found that in the majority of novae with expected superhumps, this variability has not been found yet. Therefore, more observations of these systems is encouraged.

  16. A new Bayesian ensemble of trees approach for land cover classification of satellite imagery

    E-Print Network [OSTI]

    Ranjan, Pritam

    projection) over Kings County, Nova Scotia, Canada, to classify the land cover. Several prediction accuracy, projection UTM) sur Kings County, Nova Scotia, Canada, pour la classification de l'occupation du sol

  17. Pumped profiles of ammonium and chlorophyll fluorescence from the upper 120 meters of the western Gulf of Mexico and the southwest Scotia Sea

    E-Print Network [OSTI]

    Johnson, Mark Andrew

    1981-01-01T23:59:59.000Z

    the depth of the 15 isotherm and approximate centers of anticyclonic feature (Station Alpha) and cyclonic feature (Station Bravo), denoted by H and L, respectively. Stars mark deployment of the parachute drogued surface buoys tracked for diel pumped...) and chlorophyll (lower trace) and region of 50 kHz. acoustic scattering. 25 Cumulative vertical structure index for Scotia Sea pumped profile 474. 27 FI GURE PAGE 10. Temperature fine structure during pumped vertical profiles, Station Alpha, Western Gulf...

  18. Near-Infrared and Optical Studies of the fast nova V4643 Sgr (Nova Sagittarii 2001)

    E-Print Network [OSTI]

    N. M. Ashok; D. P. K. Banerjee; W. P. Varricatt; U. S. Kamath

    2006-02-07T23:59:59.000Z

    V4643 Sagittarii or Nova Sagittarii 2001 was discovered in outburst at 7.7 mag. on 2001 February 24. Here, we present near-infrared results of this fast classical nova obtained in the early decline phase in 2001 March followed by optical observations about one month later. Subsequently we also present near-infrared spectra taken later in the nova's evolution, about four months after the outburst, when V4643 Sgr had entered the coronal phase. The spectra in the early decline phase are dominated by emission lines of the HI Brackett series and also the Paschen beta and gamma lines. We study the cause of the excitation of the the OI line at 1.128 micron and discuss the variation in its strength with time after outburst. We discuss the role of optical depth effects on the observed strengths of the hydrogen Brackett and Paschen lines and discuss possible reasons for the puzzling behavior of the Br gamma line strength and whether it is correlated with the OI 1.128 micron line behavior. An optical spectrum is presented which shows that HeII lines are the most prominent features - after HI - to be seen in early 2001 April. We present and also discuss spectra taken in 2001 June and August which prominently show coronal lines of [Si VI] and [Si VII] at 1.9641 micron and 2.4807 micron respectively.

  19. Distributed computer control system in the Nova Laser Fusion Test Facility

    SciTech Connect (OSTI)

    Not Available

    1985-09-01T23:59:59.000Z

    The EE Technical Review has two purposes - to inform readers of various activities within the Electronics Engineering Department and to promote the exchange of ideas. The articles, by design, are brief summaries of EE work. The articles included in this report are as follows: Overview - Nova Control System; Centralized Computer-Based Controls for the Nova Laser Facility; Nova Pulse-Power Control System; Nova Laser Alignment Control System; Nova Beam Diagnostic System; Nova Target-Diagnostics Control System; and Nova Shot Scheduler. The 7 papers are individually abstracted.

  20. GEODESIC INTERACTIVE SEGMENTATION IN THE COLOR MONOGENIC SIGNAL Explora Nova,

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    GEODESIC INTERACTIVE SEGMENTATION IN THE COLOR MONOGENIC SIGNAL FRAMEWORK G. Demarcq Explora Nova is based on the computation of geodesic distances within color mono- genic signal (CMS) fields-- Interactive Segmentation, Clifford Alge- bra, Color Monogenic Signal, Geodesic Distances 1. INTRODUCTION

  1. Fermilab | Web Cams | NOvA Far Detector

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

    Follow us on: Facebook Twitter NOvA Far Detector Live Webcam Detector Hall Looking Downstream This text will be replaced View this full feed on Twitter @NOvANuz Twitter Feed...

  2. Cimpor inventa nova frmula para reduzir pegada de CO2

    E-Print Network [OSTI]

    Instituto de Sistemas e Robotica

    Cimpor inventa nova fórmula para reduzir pegada de CO2 CIMENTO. A Cimpor descobriu uma nova fórmula para produzir ci- mento que lhe permitirá reduzir a pegada de CO 2 em 25%. Segundo as contas da as fábricas do grupo, seriam emitidos menos quatro milhões de toneladas de CO 2 por ano, o que permitiria uma

  3. JNSST (2010) ISSN: 1933-0324 Volume 4, Issue 2, pp. 73 90. 2010 Nova Science Publishers, Inc.

    E-Print Network [OSTI]

    Hossain, M. Enamul

    § Dalhousie University, Halifax, Canada ABSTRACT Drilling is a necessary step for petroleum exploration and production. The conventional rotary drilling technique falls short since it is costly and contaminating of principal importance in any drilling process is the "weight on bit". This is the axial force acting

  4. Acknowledgements: The author would like to thank his colleagues and associates for their assistance with this report.

    E-Print Network [OSTI]

    Hughes, Larry

    . All three replacement energy sources being promoted by the province face significant challenges: wind shortages and unstable energy prices. The purpose of the 2009 Energy Strategy was to help Nova Scotia meet with this report. ERG/200904 Nova Scotia's energy strategy: Energy security for Nova Scotians Response to The Nova

  5. NOvA: Building a Next Generation Neutrino Experiment

    ScienceCinema (OSTI)

    Perko, John; Williams, Ron; Miller, Bill;

    2014-05-30T23:59:59.000Z

    The NOvA neutrino experiment is searching for the answers to some of the most fundamental questions of the universe. This video documents how collaboration between government research institutions like Fermilab, academia and industry can create one of the largest neutrino detectors in the world.

  6. Series 50 propane-fueled Nova bus: Engine development, installation, and field trials

    SciTech Connect (OSTI)

    Smith, B.

    1999-01-01T23:59:59.000Z

    The report describes a project to develop the Detroit Diesel series 50 liquefied propane gas (LPG) heavy-duty engine and to conduct demonstrations of LPG-fuelled buses at selected sites (Halifax Regional Municipality and three sites in the United States). The project included five main elements: Engine development and certification, chassis re-engineering and engine installation, field demonstration, LPG fuel testing, and LPG fuel variability testing. Lessons learned with regard to engine design and other issues are discussed, and recommendations are made for further development and testing.

  7. Summary of control and data acquisition systems for Nova experiments

    SciTech Connect (OSTI)

    McCauley, E.W.; Campbell, E.M.; Auerbach, J.M.; Montgomery, D.S.; Martin, V.A.; Randolph, J.E.; Shaw, J.G.; Stewart, B.L.; Stone, G.F.

    1986-04-01T23:59:59.000Z

    The Nova Laser has completed its first year of operation. During this period, emphasis has been placed on activation of the facility and of the numerous target and beam diagnostics. Two separate target chambers are in use. Nova operation is separated into two broad functions: Laser Operations and Experiments. The Operations Group provides the laser system control, operation and data acquisition and the Experiments Group provides experiment definition, diagnostic instrumentation and overall data processing. On the Operations side, VAX 11/780 computers are used to set up diagnostic operating parameters and collect data recorded by the CAMAC and CCD modules. These data are delivered in files by electronic link to the Laser Experiments and Analysis Facility (LEAF) VAX 11/785 of the Experiments Group for processing. Film data are digitized at LEAF and the film data files are also processed on the LEAF VAX.

  8. The recurrent nova U Scorpii - an evolutionary considerations

    E-Print Network [OSTI]

    Marek J. Sarna; Ene Ergma; Jelena Greskevits

    2005-11-30T23:59:59.000Z

    We perform evolutionary calculations of binary stars to find progenitors of systems with parameters similar to the recurrent nova U Sco. We show that a U Sco-type system may be formed starting with an initial binary system which has a low-mass carbon-oxygen white dwarf as an accretor. Since the evolutionary stage of the secondary is not well known, we calculate sequences with hydrogen-rich and helium-rich secondaries. The evolution of the binary may be divided into several observable stages as: classical nova, supersoft X-ray source with stable hydrogen shell burning, or strong wind phase. It culminates in the formation of a massive white dwarf near the Chandrasekhar mass limit. We follow the chemical evolution of the secondary as well as of the matter lost from the system, and we show that observed $^{12}$C/$^{13}$C and N/C ratios may give some information about the nature of the binary.

  9. VERITAS OBSERVATIONS OF THE NOVA IN V407 CYGNI

    SciTech Connect (OSTI)

    Aliu, E. [Department of Physics and Astronomy, Barnard College, Columbia University, NY 10027 (United States); Archambault, S. [Physics Department, McGill University, Montreal, QC H3A 2T8 (Canada); Arlen, T. [Department of Physics and Astronomy, University of California, Los Angeles, CA 90095 (United States); Aune, T.; Bouvier, A. [Santa Cruz Institute for Particle Physics and Department of Physics, University of California, Santa Cruz, CA 95064 (United States); Beilicke, M.; Buckley, J. H.; Bugaev, V.; Dickherber, R. [Department of Physics, Washington University, St. Louis, MO 63130 (United States); Benbow, W. [Fred Lawrence Whipple Observatory, Harvard-Smithsonian Center for Astrophysics, Amado, AZ 85645 (United States); Bradbury, S. M. [School of Physics and Astronomy, University of Leeds, Leeds LS2 9JT (United Kingdom); Byrum, K. [Argonne National Laboratory, 9700 South Cass Avenue, Argonne, IL 60439 (United States); Cannon, A.; Collins-Hughes, E. [School of Physics, University College Dublin, Belfield, Dublin 4 (Ireland); Cesarini, A.; Connolly, M. P. [School of Physics, National University of Ireland Galway, University Road, Galway (Ireland); Ciupik, L. [Astronomy Department, Adler Planetarium and Astronomy Museum, Chicago, IL 60605 (United States); Cui, W. [Department of Physics, Purdue University, West Lafayette, IN 47907 (United States); Decerprit, G. [DESY, Platanenallee 6, 15738 Zeuthen (Germany); Duke, C., E-mail: daniel-d-gall@uiowa.edu, E-mail: kazuma-tsurusaki@uiowa.edu [Department of Physics, Grinnell College, Grinnell, IA 50112-1690 (United States); and others

    2012-07-20T23:59:59.000Z

    We report on very high energy (E > 100 GeV) gamma-ray observations of V407 Cygni, a symbiotic binary that underwent a nova outburst producing 0.1-10 GeV gamma rays during 2010 March 10-26. Observations were made with the Very Energetic Radiation Imaging Telescope Array System during 2010 March 19-26 at relatively large zenith angles due to the position of V407 Cyg. An improved reconstruction technique for large zenith angle observations is presented and used to analyze the data. We do not detect V407 Cygni and place a differential upper limit on the flux at 1.6 TeV of 2.3 Multiplication-Sign 10{sup -12} erg cm{sup -2} s{sup -1} (at the 95% confidence level). When considered jointly with data from Fermi-LAT, this result places limits on the acceleration of very high energy particles in the nova.

  10. Thermonuclear Runaways on Accreting White Dwarfs: Models of Classical Novae Explosions

    E-Print Network [OSTI]

    Margarita Hernanz; Jordi Jose

    2000-01-11T23:59:59.000Z

    The mechanism of classical novae explosions is explained, together with some of their observational properties. The scarce but not null impact of novae in the chemical evolution of the Milky Way is analyzed, as well as their relevance for the radioactivity in the Galaxy. A special emphasis is given to the predicted gamma-ray emission from novae and its relationship with the thermonuclear model itself and its related nucleosynthesis.

  11. THE INTER-ERUPTION TIMESCALE OF CLASSICAL NOVAE FROM EXPANSION OF THE Z CAMELOPARDALIS SHELL

    SciTech Connect (OSTI)

    Shara, Michael M.; Mizusawa, Trisha; Zurek, David [Department of Astrophysics, American Museum of Natural History, Central Park West at 79th Street, New York, NY 10024-5192 (United States); Martin, Christopher D.; Neill, James D. [Department of Physics, Math and Astronomy, California Institute of Technology, 1200 East California Boulevard, Mail Code 405-47, Pasadena, CA 91125 (United States); Seibert, Mark [Observatories of the Carnegie Institution of Washington, 813 Santa Barbara Street, Pasadena, CA 91101 (United States)

    2012-09-10T23:59:59.000Z

    The dwarf nova Z Camelopardalis is surrounded by the largest known classical nova shell. This shell demonstrates that at least some dwarf novae must have undergone classical nova eruptions in the past, and that at least some classical novae become dwarf novae long after their nova thermonuclear outbursts. The current size of the shell, its known distance, and the largest observed nova ejection velocity set a lower limit to the time since Z Cam's last outburst of 220 years. The radius of the brightest part of Z Cam's shell is currently {approx}880 arcsec. No expansion of the radius of the brightest part of the ejecta was detected, with an upper limit of {<=}0.17 arcsec yr{sup -1}. This suggests that the last Z Cam eruption occurred {>=}5000 years ago. However, including the important effect of deceleration as the ejecta sweeps up interstellar matter in its snowplow phase reduces the lower limit to 1300 years. This is the first strong test of the prediction of nova thermonuclear runaway theory that the interoutburst times of classical novae are longer than 1000 years. The intriguing suggestion that Z Cam was a bright nova, recorded by Chinese imperial astrologers in October-November 77 B.C.E., is consistent with our measurements. If Z Cam was indeed the nova of 77 B.C.E. we predict that its ejecta are currently expanding at 85 km s{sup -1}, or 0.11 arcsec yr{sup -1}. Detection and measurement of this rate of expansion should be possible in just a few years.

  12. E-Print Network 3.0 - adipocitocinas uma nova Sample Search Results

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

    INTERNET Equipa do IST sugere nova forma de ... Source: Instituto de Sistemas e Robotica - Polo de Lisboa (Institute for Systems and Robotics, Lisbon pole) Portugal...

  13. E-Print Network 3.0 - adalimumab uma nova Sample Search Results

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

    INTERNET Equipa do IST sugere nova forma de ... Source: Instituto de Sistemas e Robotica - Polo de Lisboa (Institute for Systems and Robotics, Lisbon pole) Portugal...

  14. E-Print Network 3.0 - antarctica novas idades Sample Search Results

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

    escrita e o desenvolvimento de novas competncias Source: Instituto de Sistemas e Robotica - Polo de Lisboa (Institute for Systems and Robotics, Lisbon pole) Portugal...

  15. LABORATORY ANALYSIS OF PRESOLAR SILICATE STARDUST FROM A NOVA

    SciTech Connect (OSTI)

    Leitner, J.; Kodolanyi, J.; Hoppe, P. [Max Planck Institute for Chemistry, Particle Chemistry Department, Hahn-Meitner-Weg 1, D-55128 Mainz (Germany); Floss, C., E-mail: jan.leitner@mpic.de [Laboratory for Space Sciences and Physics Department, Washington University, One Brookings Drive, St. Louis, MO 63130 (United States)

    2012-08-01T23:59:59.000Z

    We report the major element as well as the oxygen, magnesium, and silicon isotope composition of a unique presolar silicate grain found in the fine-grained fraction of the Antarctic CR2 chondrite Graves Nunataks 95229. The grain is characterized by an extremely high {sup 17}O/{sup 16}O ratio (6.3 {+-} 0.2 Multiplication-Sign 10{sup -3}) relative to solar values, whereas its {sup 18}O/{sup 16}O ratio is solar within measurement uncertainty. It also shows enrichments in {sup 25,26}Mg and a significant excess in {sup 30}Si relative to solar system compositions, with {delta}{sup 25}Mg = 79 {+-} 21 per mille , {delta}{sup 26}Mg = 70 {+-} 20 per mille , and {delta}{sup 30}Si = 379 {+-} 92 per mille . This isotopic composition is consistent with an origin in the ejecta of a {approx}1.3-1.4 M{sub Sun} ONe nova with large contributions of material from a main-sequence companion star of roughly solar metallicity. However, many details of the stellar source remain undetermined, owing to the uncertainties of current nova nucleosynthesis models. Auger electron spectroscopic analyses identify O, Mg, Si, and Fe as the grain's major constituents. Its (Mg+Fe)/Si atomic ratios are lower than that of olivine and correspond on average to Fe-Mg-pyroxene. A complex texture and heterogeneous major element distribution within the grain attest to condensation under non-equilibrium conditions, which is consistent with the proposed nova origin.

  16. Nova control system: goals, architecture, and system design

    SciTech Connect (OSTI)

    Suski, G.J.; Duffy, J.M.; Gritton, D.G.; Holloway, F.W.; Krammen, J.R.; Ozarski, R.G.; Severyn, J.R.; Van Arsdall, P.J.

    1982-05-19T23:59:59.000Z

    The control system for the Nova laser must operate reliably in a harsh pulse power environment and satisfy requirements of technical functionality, flexibility, maintainability and operability. It is composed of four fundamental subsystems: Power Conditioning, Alignment, Laser Diagnostics, and Target Diagnostics, together with a fifth, unifying subsystem called Central Controls. The system architecture utilizes a collection of distributed microcomputers, minicomputers, and components interconnected through high speed fiber optic communications systems. The design objectives, development strategy and architecture of the overall control system and each of its four fundamental subsystems are discussed. Specific hardware and software developments in several areas are also covered.

  17. Petra Nova - W.A. Parish Project | 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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "of Energy Power.pdf11-161-LNG |September 15, 2010Energy6 Frontera STAT.Paul L.3 AgencyEnergyB.Petra Nova

  18. NOVA NERSC's Online VASP Application Annette Greiner Shreyas Cholia

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the Contributions and Achievements of Women |hits 21Species. |RPSEA FinalNOTICE OF981NOVA

  19. Advances in Sustainable Petroleum Engineering Science ISSN 1937-7991 Volume 2, Number 3 2011 Nova Science Publishers, Inc.

    E-Print Network [OSTI]

    Hossain, M. Enamul

    Advances in Sustainable Petroleum Engineering Science ISSN 1937-7991 Volume 2, Number 3 © 2011 Nova

  20. Direct measurement of the $^{18}F(p,\\alpha)^{15}O$ reaction for application to nova gamma-ray emission

    E-Print Network [OSTI]

    De Srville, N; Leleux, P; Coc, A; Kiener, J; Lefebvre-Schuhl, A; Tatischeff, V; Descouvemont, P; Figuera, P; Hammache, F; Achouri, L; Orr, N; Stefan, I; Casarejos, E; Davinson, T; Robertson, D; Laird, A M; Fox, S P; Mumby-Croft, P; Vaughan, K

    2006-01-01T23:59:59.000Z

    Direct measurement of the $^{18}F(p,\\alpha)^{15}O$ reaction for application to nova gamma-ray emission

  1. A search for radioactive 26Al in the nova-like variable V4332 Sagittarii

    E-Print Network [OSTI]

    D. P. K. Banerjee; N. M. Ashok; O. Launila; C. J. Davis; W. P. Varricatt

    2004-06-21T23:59:59.000Z

    We have searched for the important radioactive isotope 26Al in the nova-like source V4332 Sgr. Recent results from gamma ray astronomy show that there is pervasive emission of the 1.809 MeV gamma ray photon, arising from the decay of 26Al to 26Mg, from all over the galactic plane. Though the sites from where this emission originates are not clearly established, novae are believed to be an important contributing source. In this context, V4332 Sgr presented a rare opportunity to observationally investigate whether novae or novae-like sources synthesize 26Al and to what extent. Strong AlO bands in the near-IR have been reported in this object recently. As molecular bands of different isotopic compositions are readily resolved spectroscopically (e.g. 12CO and 13CO), it was thought that the components of AlO associated with 26Al and stable 27Al could be detected as separate bands. Our spectra indicate that there is no strong presence of 26Al in V4332 Sgr. A reliable upper limit of 0.10 for the 26Al/27Al ratio is determined which constitutes the first observational constraint for this ratio in a potential 26Al producing source. While V4332 Sgr is not a typical nova, its outburst amplitude and light-curve behaviour bear close similarity to that of novae. Hence, although the results from V4332 Sgr cannot be directly extended to novae in general, the limit on the observed 26Al/27Al ratio could be a useful input in constraining rather uncertain nucleosynthesis models for the production of 26Al in novae/novae-like sources. By comparing the observed 26Al/27Al ratio in V4332 Sgr with that expected in classical novae it appears unlikely that the progenitor of V4332 Sgr is an Oxygen-Neon-Magnesium white dwarf.

  2. The {sup 30}P(p, ?){sup 31}S reaction in classical novae: progress and prospects

    SciTech Connect (OSTI)

    Wrede, C., E-mail: wrede@nscl.msu.edu [Department of Physics and Astronomy and National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824 (United States)

    2014-04-15T23:59:59.000Z

    The unknown thermonuclear rate of the {sup 30}P(p, ?){sup 31}S reaction at classical-nova temperatures currently prohibits the accurate modeling of nova nucleosynthesis in the A ? 30 region. This is hindering the calibration of nova thermometers based on observed O/S, S/Al, O/P, and P/Al abundance ratios in nova ejecta, the calibration of a meter to probe mixing at the core-envelope interface in novae based on the observed Si/H abundance ratio, and the identification of candidate pre-solar nova grains found in primitive meteorites based on laboratory measurements of their {sup 30}Si/{sup 28}Si isotopic ratios. Each of these diagnostics could address key questions in our understanding of classical novae if the {sup 30}P(p, ?){sup 31}S rate were known. We review progress on the determination of the {sup 30}P(p, ?){sup 31}S rate leading to a critical assessment of current interpretations of published data and prospects for future work.

  3. Near Infrared Observations of the novae V2491 Cygni and V597 Puppis

    E-Print Network [OSTI]

    Sachindra Naik; D. P. K. Banerjee; N. M. Ashok

    2008-12-22T23:59:59.000Z

    We present results obtained from near-infrared JHK spectroscopic observations of novae V2491 Cyg and V597 Pup in the early declining phases of their 2007 and 2008 outbursts respectively. In both objects, the spectra displayed emission lines of HI, OI, HeI and NI. In V597 Pup, the HeI lines were found to strengthen rapidly with time. Based on the observed spectral characteristics, both objects are classified as He/N novae. We have investigated the possibility of V2491 Cyg being a recurrent nova as has been suggested. By studying the temporal evolution of the line widths in V2491 Cyg it appears unlikely that the binary companion is a giant star with heavy wind as in recurrent novae of the RS Oph type. Significant deviations from that of recombination case B conditions are observed in the strengths of the HI lines. This indicates that the HI lines, in both novae, are optically thick during the span of our observations. The slope of the continuum spectra in both cases was found to have a \\lambda^-(3-3.5) dependence which deviates from a Rayleigh-Jeans spectral distribution. Both novae were detected in the post-outburst super-soft X-ray phase; V2491 Cyg being very bright in X-rays has been the target of several observations. We discuss and correlate our infrared observations with the observed X-ray properties of these novae.

  4. NOvA (Fermilab E929) Official Plots and Figures

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

    The NOvA collaboration, consisting of 180 researchers across 28 institutions and managed by the Fermi National Accelerator Laboratory (FNAL), is developing instruments for a neutrino-focused experiment that will attempt to answer three fundamental questions in neutrino physics: 1) Can we observe the oscillation of muon neutrinos to electron neutrinos; 2) What is the ordering of the neutrino masses; and 3) What is the symmetry between matter and antimatter? The collaboration makes various data plots and figures available. These are grouped under five headings, with brief descriptions included for each individual figure: Neutrino Spectra, Detector Overview, Theta12 Mass Hierarchy CP phase, Theta 23 Delta Msqr23, and NuSterile.

  5. Nova DAQ, System Architecture, Data Combiner and Timing System

    SciTech Connect (OSTI)

    Biery, K.A.; Cooper, R.G.; Foulkes, S.C.; Guglielmo, G.M.; Haynes, B.W.; Kwarciany, R.; Pavlicek, F.V.; Piccoli, L.P.; Votava, M.E.V.; /Fermilab

    2007-04-01T23:59:59.000Z

    NOvA (E929) is a long baseline experiment that will search for neutrino oscillations. There will be one detector near the beam source at Fermilab, and one detector in northern Minnesota. The DAQ system for the far detector collects over-threshold hits from over 450,000 channels of scintillator readouts, sorts the time-stamped data packets and archives selected time periods of data for transmission and processing. While a simple point-to-point protocol is used for the first level of data collection, Ethernet was chosen as the fabric for the rest of the DAQ. The packet time-stamp and overall system synchronization is based on two common-view GPS trained clock oscillators, one at each site. The present design cost-effectively satisfies the experiment's moderate speed and data volume requirements.

  6. NOVA-NREL Optimal Vehicle Acquisition Analysis (Brochure)

    SciTech Connect (OSTI)

    Blakley, H.

    2011-03-01T23:59:59.000Z

    Federal fleet managers face unique challenges in accomplishing their mission - meeting agency transportation needs while complying with Federal goals and mandates. Included in these challenges are a variety of statutory requirements, executive orders, and internal goals and objectives that typically focus on petroleum consumption and greenhouse gas (GHG) emissions reductions, alternative fuel vehicle (AFV) acquisitions, and alternative fuel use increases. Given the large number of mandates affecting Federal fleets and the challenges faced by all fleet managers in executing day-to-day operations, a primary challenge for agencies and other organizations is ensuring that they are as efficient as possible in using constrained fleet budgets. An NREL Optimal Vehicle Acquisition (NOVA) analysis makes use of a mathematical model with a variety of fleet-related data to create an optimal vehicle acquisition strategy for a given goal, such as petroleum or GHG reduction. The analysis can helps fleets develop a vehicle acquisition strategy that maximizes petroleum and greenhouse gas reductions.

  7. Pulsed power supply for Nova Upgrade. Final report, August 1, 1991 to March 31, 1992

    SciTech Connect (OSTI)

    Bacon, J.L.; Kajs, J.P.; Walls, A.; Weldon, W.F.; Zowarka, R.C. [Univ. of Texas, Austin, TX (US). Center for Electromechanics] [Univ. of Texas, Austin, TX (US). Center for Electromechanics

    1992-12-31T23:59:59.000Z

    This report describes work carried out at the Center for Electromechanics at The University of Texas at Austin (CEM-UT). A baseline design of the Nova Upgrade has been completed by Lawrence Livermore National Laboratory. The Nova Upgrade is an 18 beamline Nd: glass laser design utilizing fully relayed 4x4 30 cm aperture segmented optical components. The laser thus consists of 288 independent beamlets nominally producing 1.5 to 2.0 MJ of 0.35 {mu}m light in a 3 to 5 ns pulse. The laser design is extremely flexible and will allow a wide range of pulses to irradiate ICF targets. This facility will demonstrate ignition/gain and the scientific feasibility of ICF for energy and defense applications. The pulsed power requirements for the Nova Upgrade are given. CEM-UT was contracted to study and develop a design for a homopolar generator/inductor (HPG/inductor) opening switch system which would satisfy the pulsed power supply requirements of the Nova Upgrade. The Nd:glass laser amplifiers used in the Nova Upgrade will be powered by light from xenon flashlamps. The pulsed power supply for the Nova Upgrade powers the xenon flashlamps. This design and study was for a power supply to drive flashlamps.

  8. SWIFT X-RAY AND ULTRAVIOLET MONITORING OF THE CLASSICAL NOVA V458 VUL (NOVA VUL 2007)

    SciTech Connect (OSTI)

    Ness, J.-U. [European Space Astronomy Centre, P.O. Box 78, 28691 Villanueva de la Canada, Madrid (Spain); Drake, J. J. [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States); Beardmore, A. P.; Evans, P. A.; Osborne, J. P.; Page, K. L. [Department of Physics and Astronomy, University of Leicester, Leicester LE1 7RH (United Kingdom); Boyd, D. [BAA VSS, 5 Silver Lane, West Challow, Wantage, OX12 9TX (United Kingdom); Bode, M. F. [Astrophysics Research Institute, Liverpool John Moores University, Twelve Quays House, Egerton Wharf, Birkenhead CH41 1LD (United Kingdom); Brady, S. [AAVSO, 5 Melba Drive, Hudson, NH 03051 (United States); Gaensicke, B. T.; Steeghs, D. [Department of Physics, University of Warwick, Coventry CV4 7AL (United Kingdom); Kitamoto, S.; Takei, D. [Department of Physics, Rikkyo University, 3-34-1 Nishi-Ikebukuro, Toshima, Tokyo 171-8501 (Japan); Knigge, C. [School of Physics and Astronomy, University of Southampton, Southampton SO17 1BJ (United Kingdom); Miller, I. [BAA VSS, Furzehill House, Ilston, Swansea SA2 7LE (United Kingdom); Rodriguez-Gil, P. [Isaac Newton Group, PO Ap. de Correos 321, 38700 Sta. Cruz de la Palma (Spain); Schwarz, G. [Department of Geology and Astronomy, West Chester University, West Chester, PA 19383 (United States); Staels, B. [CBA Flanders, Alan Guth Observatory, Koningshofbaan 51, Hofstade, Aalst (Belgium); Tsujimoto, M. [Department of Astronomy and Astrophysics, Pennsylvania State University, 525 Davey Laboratory, University Park, PA 16802 (United States); Wesson, R. [Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT (United Kingdom)], E-mail: juness@sciops.esa.int (and others)

    2009-05-15T23:59:59.000Z

    We describe the highly variable X-ray and UV emission of V458 Vul (Nova Vul 2007), observed by Swift between 1 and 422 days after outburst. Initially bright only in the UV, V458 Vul became a variable hard X-ray source due to optically thin thermal emission at kT = 0.64 keV with an X-ray band unabsorbed luminosity of 2.3 x 10{sup 34} erg s{sup -1} during days 71-140. The X-ray spectrum at this time requires a low Fe abundance (0.2{sup +0.3} {sub -0.1} solar), consistent with a Suzaku measurement around the same time. On day 315 we find a new X-ray spectral component which can be described by a blackbody with temperature of kT = 23{sup +9} {sub -5} eV, while the previous hard X-ray component has declined by a factor of 3.8. The spectrum of this soft X-ray component resembles those typically seen in the class of supersoft sources (SSS) which suggests that the nova ejecta were starting to clear and/or that the white dwarf photosphere is shrinking to the point at which its thermal emission reaches into the X-ray band. We find a high degree of variability in the soft component with a flare rising by an order of magnitude in count rate in 0.2 days. In the following observations on days 342.4-383.6, the soft component was not seen, only to emerge again on day 397. The hard component continued to evolve, and we found an anticorrelation between the hard X-ray emission and the UV emission, yielding a Spearman rank probability of 97%. After day 397, the hard component was still present, was variable, and continued to fade at an extremely slow rate but could not be analyzed owing to pile-up contamination from the bright SSS component.

  9. Near-Infrared Studies of V1280 Sco (Nova Scorpii 2007)

    E-Print Network [OSTI]

    Ramkrishna Das; Dipankar Banerjee; Nagarhalli Ashok; Olivier Chesneau

    2008-09-26T23:59:59.000Z

    We present spectroscopic and photometric results of Nova V1280 Sco which was discovered in outburst in early 2007 February. The large number of spectra obtained of the object leads to one of the most extensive, near-infrared spectral studies of a classical nova. The spectra evolve from a P-Cygni phase to an emission-line phase and at a later stage is dominated by emission from the dust that formed in this nova. A detailed model is computed to identify and study characteristics of the spectral lines. Inferences from the model address the vexing question of which novae have the ability to form dust. It is demonstrated, and strikingly corroborated with observations, that the presence of lines in the early spectra of low-ionization species like Na and Mg - indicative of low temperature conditions - appear to be reliable indicators that dust will form in the ejecta. It is theoretically expected that mass loss during a nova outburst is a sustained process. Spectroscopic evidence for such a sustained mass loss, obtained by tracing the evolution of a P-Cygni feature in the Brackett gamma line, is presented here allowing a lower limit of 25-27 days to be set for the mass-loss duration. Photometric data recording the nova's extended 12 day climb to peak brightness after discovery is used to establish an early fireball expansion and also show that the ejection began well before maximum brightness. The JHK light curves indicate the nova had a fairly strong second outburst around 100 days after the first.

  10. Isotopic 32S/33S ratio as a diagnostic of presolar grains from novae

    E-Print Network [OSTI]

    A. Parikh; K. Wimmer; T. Faestermann; R. Hertenberger; J. Jose; H. -F. Wirth; C. Hinke; R. Krucken; D. Seiler; K. Steiger; K. Straub

    2014-09-01T23:59:59.000Z

    Measurements of sulphur isotopes in presolar grains can help to identify the astrophysical sites in which these grains were formed. A more precise thermonuclear rate of the 33S(p,gamma)34Cl reaction is required, however, to assess the diagnostic ability of sulphur isotopic ratios. We have studied the 33S(3He,d)34Cl proton-transfer reaction at 25 MeV using a high-resolution quadrupole-dipole-dipole-dipole magnetic spectrograph. Deuteron spectra were measured at ten scattering angles between 10 and 55 degrees. Twenty-four levels in 34Cl over Ex = 4.6 - 5.9 MeV were observed, including three levels for the first time. Proton spectroscopic factors were extracted for the first time for levels above the 33S+p threshold, spanning the energy range required for calculations of the thermonuclear 33S(p,gamma)34Cl rate in classical nova explosions. We have determined a new 33S(p,gamma)34Cl rate using a Monte Carlo method and have performed new hydrodynamic nova simulations to determine the impact on nova nucleosynthesis of remaining nuclear physics uncertainties in the reaction rate. We find that these uncertainties lead to a factor of less than 5 variation in the 33S(p,gamma)34Cl rate over typical nova peak temperatures, and variation in the ejected nova yields of S--Ca isotopes by less than 20%. In particular, the predicted 32S/33S ratio is 110 - 130 for the nova model considered, compared to 110 - 440 with previous rate uncertainties. As recent type II supernova models predict ratios of 130 - 200, the 32S/33S ratio may be used to distinguish between grains of nova and supernova origin.

  11. Dwarf Novae in the OGLE Data. II. Forty New Dwarf Novae in the OGLE-III Galactic Disk Fields

    E-Print Network [OSTI]

    Mroz, P; Poleski, R; Udalski, A; Soszynski, I; Szymanski, M K; Kubiak, M; Pietrzynski, G; Wyrzykowski, L; Ulaczyk, K; Kozlowski, S; Skowron, J

    2013-01-01T23:59:59.000Z

    We report the discovery of forty erupting cataclysmic variable stars in the OGLE-III Galactic disk fields. Among them seventeen objects are of U Gem type, four of Z Cam type. Nineteen of the stars show outbursts and superoutbursts typical for SU UMa-type dwarf novae. In the case of five stars we were able to estimate their supercycle lengths. The obtained lengths are in the range 20-90 d, generally between the typical SU UMa-type variables and a few objects classified as the ER UMa-type variables. Since there is no significant difference between the two types but a higher mass-transfer rate resulting in more frequent outbursts and superoutbursts in the ER UMa-type stars, we propose to discard this type as a separate class of variables. We note that in one of the SU UMa-type stars, OGLE-GD-DN-039, we found a negative supercycle period change, in contrast to other active systems of this type. Two of the new OGLE objects showed long-duration WZ Sge-like superoutbursts followed by a sequence of echo outbursts. Al...

  12. Classical Novae as a Probe of the Cataclysmic Variable Population

    E-Print Network [OSTI]

    Dean M. Townsley; Lars Bildsten

    2005-03-24T23:59:59.000Z

    Classical Novae (CNe) are the brightest manifestation of mass transfer onto a white dwarf in a cataclysmic variable (CV). As such, they are probes of the mass transfer rate, Mdot, and WD mass, Mwd, in these interacting binaries. Our calculations of the dependence of the CN ignition mass, Mign, on Mdot and Mwd yields the recurrence times of these explosions. We show that the observed CNe orbital period distribution is consistent with the interrupted magnetic braking evolutionary scenario, where at orbital periods Porb > 3 hr mass transfer is driven by angular momentum loss via a wind from the companion star and at Porb < 3 hr by gravitational radiation. About 50% of CNe occur in binaries accreting at Mdot ~= 10^{-9} Msun/yr with Porb = 3-4 hr, with the remaining 50% split evenly between Porb longer (higher Mdot) and shorter (lower Mdot) than this. This resolution of the relative contribution to the CN rate from different CVs tells us that 3(9)x10^5 CVs with WD mass 1.0(0.6)Msun are needed to produce one CN per year. Using the K-band specific CN rate measured in external galaxies, we find a CV birthrate of 2(4)x10^{-4}/yr per 10^{10}Lsun,K, very similar to the luminosity specific Type Ia supernova rate in elliptical galaxies. Likewise, we predict that there should be 60-180 CVs for every 10^6Lsun,K in an old stellar population, similar to the number of X-ray identified CVs in the globular cluster 47 Tuc, showing no overabundance relative to the field. Using a two-component steady state model of CV evolution we show that the fraction of CVs which are magnetic (22%) implies a birthrate of 8% relative to non-magnetic CVs, similar to the fraction of strongly magnetic field WDs. (abridged)

  13. The Effects of Thermonuclear Reaction Rate Variations on Nova Nucleosynthesis: A Sensitivity Study

    E-Print Network [OSTI]

    Christian Iliadis; Art Champagne; Jordi Jose; Sumner Starrfield; Paul Tupper

    2002-06-03T23:59:59.000Z

    We investigate the effects of thermonuclear reaction rate uncertainties on nova nucleosynthesis. One-zone nucleosynthesis calculations have been performed by adopting temperature-density-time profiles of the hottest hydrogen-burning zone (i.e., the region in which most of the nucleosynthesis takes place). We obtain our profiles from 7 different, recently published, hydrodynamic nova simulations covering peak temperatures in the range from Tpeak=0.145-0.418 GK. For each of these profiles, we individually varied the rates of 175 reactions within their associated errors and analyzed the resulting abundance changes of 142 isotopes in the mass range below A=40. In total, we performed 7350 nuclear reaction network calculations. We use the most recent thermonuclear reaction rate evaluations for the mass ranges A=1-20 and A=20-40. For the theoretical astrophysicist, our results indicate the extent to which nova nucleosynthesis calculations depend on presently uncertain nuclear physics input, while for the experimental nuclear physicist our results represent at least a qualitative guide for future measurements at stable and radioactive ion beam facilities. We find that present reaction rate estimates are reliable for predictions of Li, Be, C and N abundances in nova nucleosynthesis. However, rate uncertainties of several reactions have to be reduced significantly in order to predict more reliable O, F, Ne, Na, Mg, Al, Si, S, Cl and Ar abundances. Results are presented in tabular form for each adopted nova simulation.

  14. X-ray Study of Rekindled Accretion in the Classical Nova V2491 Cygni

    E-Print Network [OSTI]

    Takei, D; Tsujimoto, M; Kitamoto, S; Drake, J J; Osborne, J P; Takahashi, H; Kinugasa, K

    2011-01-01T23:59:59.000Z

    We conducted an X-ray spectroscopic study of the classical nova V2491 Cygni using our target-of-opportunity observation data with the Suzaku and XMM-Newton satellites as well as archived data with the Swift satellite. Medium-resolution (R~10-50) spectra were obtained using the X-ray CCD spectrometers at several post-nova epochs on days 9, 29, 40, 50, and 60-150 in addition to a pre-nova interval between days -322 and -100 all relative to the time when the classical nova was spotted. We found remarkable changes in the time series of the spectra: (a) In the pre-nova phase and on day 9, the 6.7 keV emission line from Fe XXV was significantly detected. (b) On day 29, no such emission line was found. (c) On day 40, the 6.7 keV emission line emerged again. (d) On days 50 and 60-150, three emission lines at 6.4, 6.7, and 7.0 keV respectively from quasi-neutral Fe, Fe XXV, and Fe XXVI were found. Statistically significant changes of the Fe K line intensities were confirmed between day 29 and 50. Based on these phenom...

  15. On the Weddell-Scotia Confluence and the Scotia Front

    E-Print Network [OSTI]

    Smith, Stephen Gregory

    1989-01-01T23:59:59.000Z

    to define its spatial limits. WSC A' is I'ound only in the western WSC; transition waters range from Drake Passage to the Greenwich Meridian. ACKNOWLEDGEMENTS I am indebted to Dr. Worth D. Nowlin, Jr. f' or providing me with the research topic... and funding that have enabled me to pursue a graduate degree in oceanography. I particularly appreciate his patience and frank advice; his timely recommendation guided me to a more suitable career. I am grateful to Dr. Thomas Whitworth III for his...

  16. The Impact of Nuclear Reaction Rate Uncertainties on Evolutionary Studies of the Nova Outburst

    E-Print Network [OSTI]

    W. Raphael Hix; Michael S. Smith; Anthony Mezzacappa; Sumner Starrfield; Donald L. Smith

    2000-01-27T23:59:59.000Z

    The observable consequences of a nova outburst depend sensitively on the details of the thermonuclear runaway which initiates the outburst. One of the more important sources of uncertainty is the nuclear reaction data used as input for the evolutionary calculations. A recent paper by Starrfield, Truran, Wiescher, & Sparks (1998) has demonstrated that changes in the reaction rate library used within a nova simulation have significant effects, not just on the production of individual isotopes (which can change by an order of magnitude), but on global observables such as the peak luminosity and the amount of mass ejected. We present preliminary results of systematic analyses of the impact of reaction rate uncertainties on nova nucleosynthesis.

  17. Construction of AC Motor Controllers for NOvA Experiment Upgrades

    SciTech Connect (OSTI)

    Cooley, Patrick; /Fermilab; ,

    2011-08-04T23:59:59.000Z

    I have been constructing Alternating Current (AC) motor controllers for manipulation of particle beam detectors. The capability and reliability of these motor controllers are essential to the Laboratory's mission of accurate analysis of the particle beam's position. The device is moved in and out of the beam's path by the motor controller followed by the Neutrinos at the Main Injector Off-Axis {nu}{sub e} Appearance (NOvA) Experiment further down the beam pipe. In total, I built and tested ten ac motor controllers for new beam operations in the NOvA experiment. These units will prove to be durable and provide extremely accurate beam placement for NOvA Experiment far into the future.

  18. Design and implementation of a financial planning and tracking system for the Nova Project

    SciTech Connect (OSTI)

    Holcomb, F.

    1982-01-01T23:59:59.000Z

    The Nova project is a 185 million dollar DOE funded project to build an experimental facility to demonstrate the thermonuclear ignition of laser fusion targets. This paper describes the design and implementation considerations for the project's computerized performance measurement financial planning and tracking system and critiques its actual operation.

  19. Engineering design of the Nova Laser Facility for inertial-confinement fusion

    SciTech Connect (OSTI)

    Simmons, W W; Godwin, R O; Hurley, C A; Wallerstein, E. P.; Whitham, K.; Murray, J. E.; Bliss, E. S.; Ozarski, R. G.; Summers, M. A.; Rienecker, F.; Gritton, D. G.; Holloway, F. W.; Suski, G. J.; Severyn, J. R.

    1982-01-25T23:59:59.000Z

    The design of the Nova Laser Facility for inertial confinement fusion experiments at Lawrence Livermore National Laboratory is presented from an engineering perspective. Emphasis is placed upon design-to-performance requirements as they impact the various subsystems that comprise this complex experimental facility.

  20. The mass of the white dwarf in the old nova BT Mon

    E-Print Network [OSTI]

    D. A. Smith; V. S. Dhillon; T. R. Marsh

    1997-09-22T23:59:59.000Z

    We present spectrophotometry of the eclipsing old nova BT Mon (Nova Mon 1939). By detecting weak absorption features from the secondary star, we find its radial velocity semi-amplitude to be K_R = 205+/-5 km/s and its rotational velocity to be vsin i = 138+/-5 km/s. We also measure the radial velocity semi-amplitude of the primary star to be K_R = 170+/-10 km/s. From these parameters we obtain a mass of 1.04+/-0.06 M_sun for the white dwarf primary star and a mass of 0.87+/-0.06 M_sun for the G8V secondary star. The inclination of the system is found to be 82.2+/-3.2 deg and we estimate that the system lies at a distance of 1700+/-300pc. The high mass of the white dwarf and our finding that BT Mon was probably a fast nova together constitute a new piece of evidence in favour of the thermonuclear runaway model of classical nova outbursts. The emission lines are single peaked throughout the orbital cycle, showing absorption around phase 0.5, high velocity S-wave components and large phase offsets in their radial velocity curves. In each of these respects, BT Mon is similar to the SW Sex stars. We also find quasi-periodic flaring in the trailed spectra, which makes BT Mon a candidate intermediate polar.

  1. Simulations of the symbiotic recurrent nova V407 Cyg. I. Accretion and shock evolutions

    E-Print Network [OSTI]

    Pan, Kuo-Chuan; Taam, Ronald E

    2015-01-01T23:59:59.000Z

    The shock interaction and evolution of nova ejecta with a wind from a red giant star in a symbiotic binary system are investigated via three-dimensional hydrodynamics simulations. We specifically model the March 2010 outburst of the symbiotic recurrent nova V407~Cygni from the quiescent phase to its eruption phase. The circumstellar density enhancement due to wind-white dwarf interaction is studied in detail. It is found that the density-enhancement efficiency depends on the ratio of the orbital speed to the red giant wind speed. Unlike another recurrent nova, RS~Ophiuchi, we do not observe a strong disk-like density enhancement, but instead observe an aspherical density distribution with $\\sim 20\\%$ higher density in the equatorial plane than at the poles. To model the 2010 outburst, we consider several physical parameters, including the red giant mass loss rate, nova eruption energy, and ejecta mass. A detailed study of the shock interaction and evolution reveals that the interaction of shocks with the red ...

  2. Unveiling the nature of red novae cool explosions using archive plate photometry

    E-Print Network [OSTI]

    Goranskij, Vitaly; Zharova, Alla; Shugarov, Sergei; Barsukova, Elena; Kroll, Peter

    2015-01-01T23:59:59.000Z

    Based on archive photographic photometry and recent CCD photometric data for red novae V4332 Sgr and V838 Mon, we established their stellar composition, exploded components, and the nature of explosions. Low temperature in the outburst maximum is due to quasi-adiabatic expansion of a massive stellar envelope after the central energy surge preceded the outburst.

  3. Advances in the development of energy efficient technologies: Sea Water Air Conditioning (SWAC)

    SciTech Connect (OSTI)

    Coony, J.E. [Boston Pacific Co., Inc., Washington, DC (United States)

    1996-11-01T23:59:59.000Z

    Sea water air conditioning (SWAC) is a cost effective and environmentally friendly alternative to and/or enhancement of air conditioning from mechanical chillers. SWAC pumps cold sea water from the appropriate ocean depths (50 to 3,000 feet depending on the climate and local characteristics) to the shore where it replaces (by direct cooling) or enhances (through use as condenser water) large mechanical chillers found in coastal facilities. SWAC direct cooling uses less than twenty per cent of the electricity of a mechanical chiller and uses no refrigerants whatsoever. Indirect cooling also offers substantial energy savings. Both systems dispense with the need for a cooling tower. Technical advances over the last twenty years in corrosion resistant alloys (titanium or aluminum), bio-fouling deterrence, and deep ocean pipeline deployment allow SWAC installations to use reliable, off-the-shelf technology. SWAC works in a variety of climates (existing installations are in Hawaii and Halifax, Nova Scotia), giving it significant domestic and international potential. Economy-of-scale advantages make it attractive to district cooling schemes.

  4. Submitted to ApJ Letters, June 29, 2005 Are Presolar Silicon Carbide Grains from Novae Actually from Supernovae?

    E-Print Network [OSTI]

    Nittler, Larry R.

    Submitted to ApJ Letters, June 29, 2005 Are Presolar Silicon Carbide Grains from Novae Actually stellar nucleosynthesis and mixing. The best-studied presolar phase, silicon carbide (SiC), exhibits

  5. Underground study of the 17 O(p,? )18F reaction at Gamow energies for classical novae

    E-Print Network [OSTI]

    Scott, David Andrew

    2014-11-27T23:59:59.000Z

    Classical novae are explained as thermonuclear explosions on the surface of white dwarf stars accreting hydrogen-rich material from less evolved companions in binary star systems. These events occur frequently within our ...

  6. Halifax County, North Carolina: 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 on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia: Energy Resources Jump to: navigation,Ohio:Greer County is a countyon State HighwaysHalfway House,Halibut

  7. Halifax County, Virginia: 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 on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia: Energy Resources Jump to: navigation,Ohio:Greer County is a countyon State HighwaysHalfway

  8. Gamma Ray Bursts within the Quark-Nova scenario: Precursor, prompt and afterglow phases

    E-Print Network [OSTI]

    Ouyed, Rachid; Niebergal, Brian; Staff, Jan

    2007-01-01T23:59:59.000Z

    By exploring the dynamical and thermal evolution of the iron-rich ejecta in a Quark-Nova explosion we find that the ejecta breaks up into multiple subjets. If the quark-nova occurs inside a collapsar, the interaction between these subjets and collapsar envelope, in the case of a failed and successful supernova, leads to features indicative of those observed in Gamma Ray Bursts. These features include: (i) precursor activity (optical, X-ray, gamma-ray), (ii) prompt gamma-ray emission, and (iii) afterglow emission. We discuss SN-less long duration GRBs, short hard GRBs (including association and non-association with star forming regions), dark GRBs, as well as the energetic X-ray flares detected in Swift GRBs in our model.

  9. Genetic and environmental factors affecting growth and reproduction characters of Morada Nova sheep in Northeastern Brazil

    E-Print Network [OSTI]

    Fernandes, Antonio Amaury Oria

    1985-01-01T23:59:59.000Z

    concern in sheep produc- tion in Northeast Brazil are meat and skins. Despite the overwhelming social and economic importance of sheep production in Northeast Brazil, it is still practiced, on the average, through a very extensive and traditional... in the systems employed in that area of Brazil. This study involved an analysis of body weight records up to 12 months age and records of reproduction from a Morada Nova sheep flock maintained under grazing pasture conditions from 1979 to 1983 at the Fazenda...

  10. The enigmatic outburst of V445 Puppis - a possible Helium nova?

    E-Print Network [OSTI]

    N. M. Ashok; D. P. K. Banerjee

    2003-07-16T23:59:59.000Z

    JHK spectroscopic and photometric observations are reported for the enigmatic, nova-like, variable V445 Puppis which erupted at the end of 2000. The near-IR spectra are hydrogen-deficient and unusually rich in CI lines. The important CI lines are found to be positioned at 1.133, 1.166, 1.175, 1.189, 1.26 and 1.689 microns. Model calculations for the CI lines are done to make the identification of the lines secure. Photometric data, taken on January 2.90 UT, 2001 shortly after the outburst, show the formation of an optically thin dust shell around V445 Puppis. The temperature and upper limit for the mass of the dust shell are estimated to be 1800K and M(dust) ~ 1oe-9 M(sun) respectively . A subsequent episode of massive dust formation - indicated by the observed, deep visual dimming - is also seen in JHK images of early November 2001. V445 Puppis has shown two unusual properties for a nova i) the hydrogen-deficiency and He/C enrichment of the object as seen from optical and IR data and ii) synchrotron radio emission which was detected nearly a year after it's outburst by other workers. The strange nature of the object is discussed and it is shown that it is difficult to place it in the known categories of eruptive variables viz. novae (classical, recurrent or symbiotic); born-again AGB stars; the new class of eruptive variables like V838 Mon; and RCB/HdC stars. Tentative evidence for an accretion disk and binarity of the V445 Puppis system is presented. It is debated whether V445 Puppis is a rare Helium nova or an unique object.

  11. Nova Virgem :b the story of a nineteenth-century Brazilian slave smuggler

    E-Print Network [OSTI]

    Miller, Mason Daniel

    2001-01-01T23:59:59.000Z

    HISTORICAL BACKGROUND . Thc Eighteenth Century Slave frade and British Domestic Abolition A "Judicious Mixture of Bullying 'md Bribery' Brazilian Independence and the Abolition of the Slave Trade III LEGALITIES OF ILLEGALITY British Presence on thc... , . . . 27 . . . . . 29 . . . . . 33 . . . . . 36 CHAPTER Page IV THE NOVA VIRGFM . . . 41 Background: The Pre-Ninetccnth Century Slaver. . . The Illegal Era Slave Ship Arqucacgo or Lotaqao: How Big Was this Ship? . . . . Thc Hull of the Nr...

  12. Beacons In the Dark: Using Novae and Supernovae to Detect Dwarf Galaxies in the Local Universe

    E-Print Network [OSTI]

    Conroy, Charlie

    2015-01-01T23:59:59.000Z

    We propose that luminous transients, including novae and supernovae, can be used to detect the faintest galaxies in the universe. Beyond a few Mpc, dwarf galaxies with stellar masses $<10^6 M_{\\odot}$ will likely be too faint and/or too low in surface brightness to be directly detected in upcoming large area ground-based photometric surveys. However, single epoch LSST photometry will be able to detect novae to distances of $\\sim30$ Mpc and SNe to Gpc-scale distances. Depending on the form of the stellar mass-halo mass relation and the underlying star formation histories of low mass dwarfs, the expected nova rates will be a few to $\\sim100$ yr$^{-1}$ and the expected SN rates (including both type Ia and core-collapse) will be $\\sim10^2-10^4$ within the observable ($4\\pi$ sr) volume. The transient rate associated with intrahalo stars will be comparably large, but these transients will be located close to bright galaxies, in contrast to the dwarfs, which should trace the underlying large scale structure of th...

  13. Gamma-ray novae as probes of relativistic particle acceleration at non-relativistic shocks

    E-Print Network [OSTI]

    Metzger, Brian D; Vurm, Indrek; Hascoet, Romain; Beloborodov, Andrei M; Chomiuk, Laura

    2015-01-01T23:59:59.000Z

    The Fermi LAT discovery that classical novae produce >100 MeV gamma-rays establishes that shocks and relativistic particle acceleration are key features of these events. These shocks are likely to be radiative due to the high densities of the nova ejecta at early times coincident with the gamma-ray emission. Thermal X-rays radiated behind the shock are absorbed by neutral gas and reprocessed into optical emission, similar to Type IIn (interacting) supernovae. The ratio of gamma-ray and optical luminosities, L_gam/L_opt, thus sets a lower limit on the fraction of the shock power used to accelerate relativistic particles, e_nth. The measured values of L_gam/L_opt for two classical novae, V1324 Sco and V339 Del, constrains e_nth > 1e-2 and > 1e-3, respectively. Inverse Compton models for the gamma-ray emission are disfavored given the low electron acceleration efficiency, e_nth ~ 1e-4-1e-3, inferred from observations of Galactic cosmic rays and particle-in-cell (PIC) numerical simulations. Recent hybrid PIC simu...

  14. THE EXPANDING BIPOLAR SHELL OF THE HELIUM NOVA V445 PUPPIS

    SciTech Connect (OSTI)

    Woudt, P. A.; Warner, B. [Department of Astronomy, University of Cape Town, Private Bag X3, Rondebosch 7701 (South Africa); Steeghs, D.; Marsh, T. R. [Department of Physics, University of Warwick, Coventry, CV4 7AL (United Kingdom); Karovska, M.; Roelofs, G. H. A. [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138-1516 (United States); Groot, P. J.; Nelemans, G. [Department of Astrophysics, Radboud University Nijmegen, P.O. Box 9010, 6500 GL, Nijmegen (Netherlands); Nagayama, T. [Department of Astronomy, Kyoto University, Kitashirakawa-Oiwake-cho, Sakyo-ku, Kyoto 606-8502 (Japan); Smits, D. P. [Department of Mathematical Sciences, University of South Africa, UNISA, Pretoria 0003 (South Africa); O'Brien, T., E-mail: Patrick.Woudt@uct.ac.z [University of Manchester, Jodrell Bank Observatory, Macclesfield, Cheshire SK11 9DL (United Kingdom)

    2009-11-20T23:59:59.000Z

    From multi-epoch adaptive optics imaging and integral field unit spectroscopy, we report the discovery of an expanding and narrowly confined bipolar shell surrounding the helium nova V445 Puppis (Nova Puppis 2000). An equatorial dust disc obscures the nova remnant, and the outflow is characterized by a large polar outflow velocity of 6720 +- 650 km s{sup -1} and knots moving at even larger velocities of 8450 +- 570 km s{sup -1}. We derive an expansion parallax distance of 8.2 +- 0.5 kpc and deduce a pre-outburst luminosity of the underlying binary of log L/L{sub sun} = 4.34 +- 0.36. The derived luminosity suggests that V445 Puppis probably contains a massive white dwarf accreting at high rate from a helium star companion making it part of a population of binary stars that potentially lead to supernova Ia explosions due to accumulation of helium-rich material on the surface of a massive white dwarf.

  15. Thermal radio emission from novae & symbiotics with the Square Kilometre Array

    E-Print Network [OSTI]

    O'Brien, Tim; Chomiuk, Laura; Ribeiro, Valerio; Bode, Michael; Sokoloski, Jennifer; Woudt, Patrick

    2015-01-01T23:59:59.000Z

    The thermal radio emission of novae during outburst enables us to derive fundamental quantities such as the ejected mass, kinetic energy, and density profile of the ejecta. Recent observations with newly-upgraded facilities such as the VLA and e-MERLIN are just beginning to reveal the incredibly complex processes of mass ejection in novae (ejections appear to often proceed in multiple phases and over prolonged timescales). Symbiotic stars can also exhibit outbursts, which are sometimes accompanied by the expulsion of material in jets. However, unlike novae, the long-term thermal radio emission of symbiotics originates in the wind of the giant secondary star, which is irradiated by the hot white dwarf. The effect of the white dwarf on the giant's wind is strongly time variable, and the physical mechanism driving these variations remains a mystery (possibilities include accretion instabilities and time-variable nuclear burning on the white dwarf's surface). The exquisite sensitivity of SKA1 will enable us to su...

  16. DYNAMICAL FRAGMENTATION OF THE T PYXIDIS NOVA SHELL DURING RECURRENT ERUPTIONS

    SciTech Connect (OSTI)

    Toraskar, Jayashree; Mac Low, Mordecai-Mark; Shara, Michael M.; Zurek, David R., E-mail: toraskar@amnh.org, E-mail: mordecai@amnh.org, E-mail: mshara@amnh.org, E-mail: dzurek@amnh.org [Department of Astrophysics, American Museum of Natural History, 79th Street at Central Park West, New York, NY 10024-5192 (United States)

    2013-05-01T23:59:59.000Z

    Hubble Space Telescope images of the ejecta surrounding the nova T Pyxidis resolve the emission into more than 2000 bright knots. We simulate the dynamical evolution of the ejecta from T Pyxidis during its multiple eruptions over the last 150 years using the adaptive mesh refinement code Ramses. We demonstrate that the observed knots are the result of Richtmyer-Meshkov gas dynamical instabilities (the equivalent of Rayleigh-Taylor instabilities in an accelerated medium). These instabilities are caused by the overrunning of the ejecta from the classical nova of 1866 by fast-moving ejecta from the six subsequent recurrent nova outbursts. Magnetic fields may play a role in determining knot scale and preventing their conductive evaporation. The model correctly predicts the observed expansion and dimming of the T Pyx ejecta as well as the knotty morphology. The model also predicts that deeper, high-resolution imagery will show filamentary structure connecting the knots. We show reprocessed Hubble Space Telescope imagery that shows the first hints of such a structure.

  17. The OGLE-II event sc5_2859 a Classical Nova outburst?

    E-Print Network [OSTI]

    Afonso, C; Andersen, J; Ansari, R; Aubourg, E; Bareyre, P; Beaulieu, J P; Blanc, G; CSmith, M; Charlot, X; Coutures, C; De Kat, J; Ferlet, R; Fouqu, P; Glicenstein, J F; Goldman, B; Gould, A; Graff, D; Gros, M; Hamadache, C; Hassinski, J; Le Guillou, Laurent; Lesquoy, E; Loup, C; Magneville, C; Marquette, J B; Maurice, E; Maury, A; Milsztajn, A; Moniez, M; Palanque-Delabrouille, Nathalie; Perdereau, O; Prvt, L; Rahal, Y R; Rich, J; Spiro, M; Tisserand, P; Vidal-Madjar, A; Vigroux, L; Wagner, R M; Zylberajch, S

    2006-01-01T23:59:59.000Z

    The OGLE-II event sc5_2859 was previously identified as the third longest microlensing event ever observed. Additional photometric observations from the EROS (Experience de Recherche d'Objets Sombres) survey and spectroscopic observations of the candidate star are used to test the microlensing hypothesis.The combined OGLE and EROS data provide a high quality coverage of the light curve. The colour of the sc5_2859 event is seen to change with time. A spectrum taken in 2003 exhibits a strong Halpha emission line. The additionnal data show that the OGLE-II sc5_2859 event is actually a classical nova outburst.

  18. Quasi-Coherent Oscillations in the Extreme Ultraviolet Flux of the Dwarf Nova SS Cygni

    E-Print Network [OSTI]

    Christopher W. Mauche

    1996-03-18T23:59:59.000Z

    Quasi-coherent oscillations have been detected in the extreme ultraviolet flux of the dwarf nova SS Cygni during observations with the Extreme Ultraviolet Explorer satellite of the rise and plateau phases of an anomalous outburst in 1993 August and a normal outburst in 1994 June/July. On both occasions, the oscillation turned on during the rise to outburst and persisted throughout the observation. During the 1993 outburst, the period of the oscillation fell from 9.3 s to 7.5 s over an interval of 4.4 days; during the 1994 outburst, the period fell from 8.9 s to 7.19 s (the shortest period ever observed in SS Cyg, or any other dwarf nova) within less than a day, and then rose to 8.0 s over an interval of 8.0 days. For both outbursts, the period $P$ of the oscillation was observed to correlate with the 75--120 \\AA \\ count rate $I_{\\rm EUV}$ according to $P\\propto I_{\\rm EUV}^{-0.094}$. A magnetospheric model is considered to reproduce this variation. It is found that an effective high-order multipole field is required, and that the field strength at the surface of the white dwarf is 0.1--1 MG. Such a field strength is at the lower extreme of those measured or inferred for bona fide magnetic cataclysmic variables.

  19. A near-infrared shock wave in the 2006 outburst of recurrent nova RS Ophiuchi

    E-Print Network [OSTI]

    Ramkrishna Das; Dipankar P. K. Banerjee; Nagarhalli M. Ashok

    2006-11-08T23:59:59.000Z

    Near-infrared spectra are presented for the recent 2006 outburst of the recurrent nova RS Ophiuchi (RS Oph).We report the rare detection of an infrared shock wave as the nova ejecta plows into the pre-existing wind of the secondary in the RS Oph system consisting of a white dwarf (WD) primary and a red giant secondary. The evolution of the shock is traced through a free expansion stage to a decelerative phase. The behavior of the shock velocity with time is found to be broadly consistent with current shock models. The present observations also imply that the WD in the RS Oph system has a high mass indicating that it could be a potential SNIa candidate. We also discuss the results from a recent study showing that the near-IR continuum from the recent RS Oph eruption does not originate in an expanding fireball. However, the present work shows that the IR line emission does have an origin in an expanding shock wave.

  20. Surface studies and implanted helium measurements following NOVA high-yield DT experiments

    SciTech Connect (OSTI)

    Stoyer, M.A.; Hudson, G.B.

    1997-02-18T23:59:59.000Z

    This paper presents the results of three March 6, 1996 direct-drive high-yield DT NOVA experiments and provides `proof-of-principal` results for the quantitative measurement of energetic He ions. Semiconductor quality Si wafers and an amorphous carbon wafer were exposed to NOVA high-yield implosions. Surface damage was sub-micron in general, although the surface ablation was slightly greater for the carbon wafer than for the Si wafers. Melting of a thin ({approx} 0.1{mu}) layer of Si was evident from microscopic investigation. Electron microscopy indicated melted blobs of many different metals (e.g. Al, Au, Ta, Fe alloys, Cu and even Cd) on the surfaces. The yield measured by determining the numbers of atoms of implanted {sup 4}He and {sup 3}He indicate the number of DT fusions to be 9.1({plus_minus}2.3) X 10{sup 12} and DD fusions to be 4.8({plus_minus}1.0) x 10{sup 10}, respectively. The helium DT fusion yield is slightly lower than that of the Cu activation measurement, which was 1.3({plus_minus}0.l) x 10{sup 13} DT fusions.

  1. Photoionization Heating of Nova Ejecta by the Post-Outburst Supersoft Source

    E-Print Network [OSTI]

    Cunningham, Timothy; Bildsten, Lars

    2015-01-01T23:59:59.000Z

    The expanding ejecta from a classical nova remains hot enough ($\\sim10^{4}\\, {\\rm K}$) to be detected in thermal radio emission for up to years after the cessation of mass loss triggered by a thermonuclear instability on the underlying white dwarf (WD). Nebular spectroscopy of nova remnants confirms the hot temperatures observed in radio observations. During this same period, the unstable thermonuclear burning transitions to a prolonged period of stable burning of the remnant hydrogen-rich envelope, causing the WD to become, temporarily, a super-soft X-ray source. We show that photoionization heating of the expanding ejecta by the hot WD maintains the observed nearly constant temperature of $(1-4)\\times10^4\\mathrm{~K}$ for up to a year before an eventual decline in temperature due to either the cessation of the supersoft phase or the onset of a predominantly adiabatic expansion. We simulate the expanding ejecta using a one-zone model as well as the Cloudy spectral synthesis code, both incorporating the time-d...

  2. X-Ray Spectroscopy of the Classical Nova V458 Vulpeculae with Suzaku

    E-Print Network [OSTI]

    Masahiro Tsujimoto; Dai Takei; Jeremy J. Drake; Jan-Uwe Ness; Shunji Kitamoto

    2008-10-17T23:59:59.000Z

    We conducted a target of opportunity X-ray observation of the classical nova V458 Vulpeculae 88 days after the explosion using the Suzaku satellite. With a 20 ks exposure, the X-ray Imaging Spectrometer detected X-ray emission significantly harder than typical super-soft source emission. The X-ray spectrum shows K lines from N, Ne, Mg, Si, and S, and L-series emission from Fe in highly ionized states. The spectrum can be described by a single temperature (0.64 keV) thin thermal plasma model in collisional equilibrium with a hydrogen-equivalent extinction column density of ~3e21/cm2, a flux of ~1e-12 erg/s/cm2, and a luminosity of ~6e34 erg/s in the 0.3-3.0 keV band at an assumed distance of 13 kpc. We found a hint of an enhancement of N and deficiencies of O and Fe relative to other metals. The observed X-ray properties can be interpreted as the emission arising from shocks of ejecta from an ONe-type nova.

  3. X-Ray Spectroscopy of the Classical Nova V458 Vulpeculae with Suzaku

    E-Print Network [OSTI]

    Tsujimoto, Masahiro; Drake, Jeremy J; Ness, Jan-Uwe; Kitamoto, Shunji

    2008-01-01T23:59:59.000Z

    We conducted a target of opportunity X-ray observation of the classical nova V458 Vulpeculae 88 days after the explosion using the Suzaku satellite. With a 20 ks exposure, the X-ray Imaging Spectrometer detected X-ray emission significantly harder than typical super-soft source emission. The X-ray spectrum shows K lines from N, Ne, Mg, Si, and S, and L-series emission from Fe in highly ionized states. The spectrum can be described by a single temperature (0.64 keV) thin thermal plasma model in collisional equilibrium with a hydrogen-equivalent extinction column density of ~3e21/cm2, a flux of ~1e-12 erg/s/cm2, and a luminosity of ~6e34 erg/s in the 0.3-3.0 keV band at an assumed distance of 13 kpc. We found a hint of an enhancement of N and deficiencies of O and Fe relative to other metals. The observed X-ray properties can be interpreted as the emission arising from shocks of ejecta from an ONe-type nova.

  4. Minara Nova

    E-Print Network [OSTI]

    Multiple Contributors

    1982-01-01T23:59:59.000Z

    , The Backshooter, 11.27.64 CBS DEFENDERS, King of the Hill, 11.31.64 CBS ALFRED HITCHCOCK THEATRE, One of the Family, 2.8.65 NBC VIRGINIAN, A Slight Case of Charity, 2.10.65 NBC THE MAN FROM U.N.C.L.E., The See Paris and Die Affair, 3.1.65 NBC BRANDED... good shows by older writers (e.g., "The Enterprise Inci dent" by D.C. Fontana, "The Day of the Dove" by Jerome Blxby, and "Savage Curtain1 by Gene Roddenberry), in the third season. Of these redeeming third-season episodes, "The Empath...

  5. Quantifying atmospheric pollution across north america from boreal forest fires: a combined analysis of atmospheric modelling and ground-based remote sensing

    E-Print Network [OSTI]

    Trigwell, Robert

    2011-11-24T23:59:59.000Z

    This paper describes the interpretation of the 2010 summer LIDAR observations from Dal- housie University, Nova Scotia. The GEOS-Chem global 3D chemistry transport model was used to identify the chemical and optical ...

  6. Engagement in Reading and Access to Print: The Relationship of Home and School to Overall Reading Achievement Among Fourth Grade English Speakers

    E-Print Network [OSTI]

    Allaith, Zainab A.

    2013-04-05T23:59:59.000Z

    speakers from Canada (Alberta, British Columbia, and Nova Scotia), New Zealand, England, and USA. Data from the Progress in International Reading Literacy Study (PIRLS) questionnaires and reading achievement test were used to design the two models...

  7. GROWTH, MORTALITY, AND AGE/SIZE STRUCTURE OF THE FISHERIES FOR TILEFISH, LOPHOLATILUS CHAMAELONTICEPS,

    E-Print Network [OSTI]

    in 80-540 m from Nova Scotia to Surinam (Dooley 1978; Markle et a1. 1980). In the Middle Atlantic Bight), horizontal excavations in submarine canyon walls called "pueblo villages" (Cooper and Uzmann 1977; Warme et a

  8. Green University Planning Committee Friday, January 18, 2013

    E-Print Network [OSTI]

    Northern British Columbia, University of

    Solar PV proposal differs significantly from initial proposal - Motion: Solar PV Proposal to be included Cooperative, Small-scale wind (Nova Scotia), Data server farm - To be discussed with Energy Subcommittee B

  9. PHASE-RESOLVED INFRARED SPECTROSCOPY AND PHOTOMETRY OF V1500 CYGNI, AND A SEARCH FOR SIMILAR OLD CLASSICAL NOVAE

    SciTech Connect (OSTI)

    Harrison, Thomas E. [Department of Astronomy, New Mexico State University, Box 30001, MSC 4500, Las Cruces, NM 88003-8001 (United States); Campbell, Randy D.; Lyke, James E., E-mail: tharriso@nmsu.edu, E-mail: jlyke@keck.hawaii.edu, E-mail: randyc@keck.hawaii.edu [W. M. Keck Observatory, 65-1120 Mamalahoa Hwy., Kamuela, HI 96743 (United States)

    2013-08-01T23:59:59.000Z

    We present phase-resolved near-infrared photometry and spectroscopy of the classical nova (CN) V1500 Cyg to explore whether cyclotron emission is present in this system. While the spectroscopy do not indicate the presence of discrete cyclotron harmonic emission, the light curves suggest that a sizable fraction of its near-infrared fluxes are due to this component. The light curves of V1500 Cyg appear to remain dominated by emission from the heated face of the secondary star in this system. We have used infrared spectroscopy and photometry to search for other potential magnetic systems among old CNe. We have found that the infrared light curves of V1974 Cyg superficially resemble those of V1500 Cyg, suggesting a highly irradiated companion. The old novae V446 Her and QV Vul have light curves with large amplitude variations like those seen in polars, suggesting they might have magnetic primaries. We extract photometry for 79 old novae from the Two Micron All Sky Survey Point Source Catalog and use those data to derive the mean, un-reddened infrared colors of quiescent novae. We also extract WISE data for these objects and find that 45 of them were detected. Surprisingly, a number of these systems were detected in the WISE 22 {mu}m band. While two of those objects produced significant dust shells (V705 Cas and V445 Pup), the others did not. It appears that line emission from their ionized ejected shells is the most likely explanation for those detections.

  10. Advances in Sustainable Petroleum Engineering Science ISSN 1937-7991 Volume 2, Number 3 2011 Nova Science Publishers, Inc.

    E-Print Network [OSTI]

    Hossain, M. Enamul

    Advances in Sustainable Petroleum Engineering Science ISSN 1937-7991 Volume 2, Number 3 © 2011 Nova Science Publishers, Inc. THE MYSTERYAND UNCERTAINTY CLOUD DURING RESERVOIR SIMULATION IN THE PETROLEUM INDUSTRY M. Enamul Hossain1 and M. Rafiqul Islam2 1 Department of Petroleum Engineering, King Fahd

  11. INFRARED SPECTROSCOPY OF SYMBIOTIC STARS. IX. D-TYPE SYMBIOTIC NOVAE

    SciTech Connect (OSTI)

    Hinkle, Kenneth H.; Joyce, Richard R. [National Optical Astronomy Observatories, P.O. Box 26732, Tucson, AZ 85726 (United States); Fekel, Francis C. [Center of Excellence in Information Systems, Tennessee State University, 3500 John A. Merritt Blvd., Box 9501, Nashville, TN 37209 (United States); Wood, Peter, E-mail: hinkle@noao.edu, E-mail: joyce@noao.edu, E-mail: fekel@evans.tsuniv.edu, E-mail: wood@mso.anu.edu.au [Research School of Astronomy and Astrophysics, Australian National University, Private Bag, Canberra, ACT 2611 (Australia)

    2013-06-10T23:59:59.000Z

    Time-series spectra of the near-infrared 1.6 {mu}m region have been obtained for five of the six known D-type symbiotic novae. The spectra map the pulsation kinematics of the Mira component in the Mira-white dwarf binary system and provide the center-of-mass velocity for the Mira. No orbital motion is detected in agreement with previous estimates of orbital periods {approx}>100 yr and semimajor axes {approx}50 AU. The 1-5 {mu}m spectra of the Miras show line weakening during dust obscuration events. This results from scattering and continuum emission by 1000 K dust. In the heavily obscured HM Sge system the 4.6 {mu}m CO spectrum formed in 1000 K gas is seen in emission against an optically thick dust continuum. Spectral features that are typically produced in either the cool molecular region or the expanding circumstellar region of late-type stars cannot be detected in the D-symbiotic novae. This is in accord with the colliding wind model for interaction between the white dwarf and Mira. Arguments are presented that the 1000 K gas and dust are not Mira circumstellar material but are in the wind interaction region of the colliding winds. CO is the first molecule detected in this region. We suggest that dust condensing in the intershock region is the origin of the dust obscuration. This model explains variations in the obscuration. Toward the highly obscured Mira in HM Sge the dust zone is estimated to be {approx}0.1 AU thick. The intershock wind interaction zone appears thinnest in the most active systems. Drawing on multiple arguments masses are estimated for the system components. The Miras in most D-symbiotic novae have descended from intermediate mass progenitors. The large amount of mass lost from the Mira combined with the massive white dwarf companion suggests that these systems are supernova candidates. However, timescales and the number of objects make these rare events.

  12. Remarkable changes in the near-infrared spectrum of the nova-like variable V4332 Sgr

    E-Print Network [OSTI]

    D. P. K. Banerjee; P. W. Varricatt; N. M. Ashok; O. Launila

    2003-10-03T23:59:59.000Z

    We report on recent near-IR observations of V4332 Sgr - the nova-like variable that erupted in 1994. Its rapid, post-outburst evolution to a cool M type giant/supergiant, soon after its outburst, had showed that it was an unusual object differing from other eruptive variables like classical/symbiotic novae or born-again AGB stars. The present study of V4332 Sgr was motivated by the keen interest in the recent eruption of V838 Mon - which along with V4332 Sgr - is believed to belong to a new class of objects (we propose they may be called "quasi-novae"). Our observations show new developments in the evolution of V4332 Sgr. The most striking feature is the detection of several molecular bands of AlO - a rarely seen molecule in astronomical spectra - in the JHK spectra. Many of these bands are being detected for the first time. The only other detection of some of these AlO bands are in V838 Mon, thereby showing further spectral similarities between the two objects. JHK photometry shows the development of a new dust shell around V4332 Sgr with a temperature of ~ 900K. This dust shell does not appear to be associated with ejecta of the 1994 outburst but is due to a second mass-loss episode which is not expected in a classical nova outburst. The cold molecular environment, suggested by the AlO emission, is also not expected in novae ejecta. We model the AlO bands and also discuss the possible formation mechanism of the AlO.

  13. BRIGHT 'MERGER-NOVA' FROM THE REMNANT OF A NEUTRON STAR BINARY MERGER: A SIGNATURE OF A NEWLY BORN, MASSIVE, MILLISECOND MAGNETAR

    SciTech Connect (OSTI)

    Yu, Yun-Wei [Institute of Astrophysics, Central China Normal University, Wuhan 430079 (China)] [Institute of Astrophysics, Central China Normal University, Wuhan 430079 (China); Zhang, Bing; Gao, He, E-mail: yuyw@mail.ccnu.edu.cn, E-mail: zhang@physics.unlv.edu [Department of Physics and Astronomy, University of Nevada, Las Vegas, NV 89154 (United States)] [Department of Physics and Astronomy, University of Nevada, Las Vegas, NV 89154 (United States)

    2013-10-20T23:59:59.000Z

    A massive millisecond magnetar may survive the merger of a neutron star (NS) binary, which would continuously power the merger ejecta. We develop a generic dynamic model for the merger ejecta with energy injection from the central magnetar. The ejecta emission (the {sup m}erger-nova{sup )} powered by the magnetar peaks in the UV band and the peak of the light curve, progressively shifts to an earlier epoch with increasing frequency. A magnetar-powered merger-nova could have an optical peak brightness comparable to a supernova, which is a few tens or hundreds times brighter than the radioactive-powered merger-novae (the so-called macro-nova or kilo-nova). On the other hand, such a merger-nova would peak earlier and have a significantly shorter duration than that of a supernova. An early collapse of the magnetar could suppress the brightness of the optical emission and shorten its duration. Such millisecond-magnetar-powered merger-novae may be detected from NS-NS merger events without an observed short gamma-ray burst, and could be a bright electromagnetic counterpart for gravitational wave bursts due to NS-NS mergers. If detected, it suggests that the merger leaves behind a massive NS, which has important implications for the equation-of-state of nuclear matter.

  14. The EUV Spectrum of the Quasi-Coherent Oscillations of the Dwarf Nova SS Cygni

    E-Print Network [OSTI]

    Christopher W. Mauche

    1996-08-05T23:59:59.000Z

    Data obtained by the Extreme Ultraviolet Explorer satellite are used to determine the EUV spectrum of the quasi-coherent oscillations of the dwarf nova SS Cygni. It is found that the spectrum of the oscillations is neither blue nor red nor grey relative to the net (oscillation-phase integrated) spectrum, and hence that the oscillations cannot be explained by variations in the effective temperature, absorbing column density, or effective area, respectively. Instead, it is found that the amplitude of the oscillations is high at the relative maxima of the net spectrum, and low to zero at the relative minima of the net spectrum. This behavior can be explained by either variations in the emission line flux atop a constant underlying continuum, or variations in the optical depth of a haze of overlapping absorption lines, in which case the optical depths must be $\\tau<1$ at the relative maxima of the net spectrum, and $\\tau\\gg 1$ at the relative minima.

  15. Evidence for ablated flows in the shell of nova DQ Her

    E-Print Network [OSTI]

    N. M. H. Vaytet; T. J. O'Brien; A. P. Rushton

    2007-06-01T23:59:59.000Z

    High-resolution longslit Halpha spectra of the shell of the old nova DQ Her have been obtained with the William Herschel Telescope using the ISIS spectrograph. An equatorial expansion velocity of 370+/-14 km/s is derived from the spectra which, in conjunction with a narrowband Halpha image of the remnant, allows a distance estimate of 525+/-28 pc. An equatorial ring which exhibits enhanced [NII] emission has also been detected and the inclination angle of the shell is found to be 86.8+/-0.2 degrees with respect to the line of sight. The spectra also reveal tails extending from the clumps in the shell, which have a radial velocity increasing along their length. This suggests the presence of a stellar wind, collimated in the polar direction, which ablates fragments of material from the clumps and accelerates them into its stream up to a terminal velocity of order 800-900 km/s.

  16. QU Car: a very high luminosity nova-like binary with a carbon-enriched companion

    E-Print Network [OSTI]

    J. E. Drew; L. E. Hartley; K. S. Long; J. van der Walt

    2002-09-16T23:59:59.000Z

    QU Car is listed in cataclysmic variable star catalogues as a nova-like variable. This little-studied, yet bright interacting binary is re-appraised here in the light of new high-quality ultraviolet (UV) interstellar line data obtained with STIS on board the Hubble Space Telescope. The detection of a component of interstellar absorption at a mean LSR velocity of $-$14 km s$^{-1}$ indicates that the distance to QU Car may be $\\sim$2 kpc or more -- a considerable increase on the previous lower-limiting distance of 500 pc. If so, the bolometric luminosity of QU Car could exceed $10^{37}$ ergs s$^{-1}$. This would place this binary in the luminosity domain occupied by known compact-binary supersoft X-ray sources. Even at a 500 pc, QU Car appears to be the most luminous nova-like variable known. New intermediate dispersion optical spectroscopy of QU Car spanning 3800--7000 \\AA is presented. These data yield the discovery that C{\\sc iv} $\\lambda\\lambda$5801,12 is present as an unusually prominent emission line in an otherwise low-contrast line spectrum. Using measurements of this and other lines in a recombination line analysis, it is shown that the C/He abundance as proxied by the n(C$^{4+}$)/n(He$^{2+}$) ratio may be as high as 0.06 (an order of magnitude higher than the solar ratio). Furthermore, the C/O abundance ratio is estimated to be greater than 1. These findings suggest that the companion in QU Car is a carbon star. If so, it would be the first example of a carbon star in such a binary. An early-type R star best matches the required abundance pattern and could escape detection at optical wavelengths provided the distance to QU Car is $\\sim$2 kpc or more.

  17. On the 21Na(p,gamma)22Mg thermonuclear rate for 22Na production in novae

    E-Print Network [OSTI]

    Nadya A. Smirnova; Alain Coc

    2000-08-16T23:59:59.000Z

    Classical novae are potential sources of gamma-rays, like the 1.275 MeV gamma emission following 22Na beta decay, that could be detected by appropriate instruments on board of future satellites like INTEGRAL. It has been shown that the production of 22Na by novae is affected by the uncertainty on the 21Na(p,gamma)22Mg rate and in particular by the unknown partial widths of the Ex = 5.714 MeV, J^pi = 2^+, 22Mg level. To reduce these uncertainties, we performed shell model calculations with the OXBASH code, compared the results with available spectroscopic data and calculated the missing partial widths. Finally, we discuss the influence of these results on the 21Na(p,gamma)22Mg reaction rate and 22Na synthesis.

  18. New Constraints on the 18F(p,alpha) 15O Rate in Novae from the (d,p) Reaction

    E-Print Network [OSTI]

    R. L. Kozub; D. W. Bardayan; J. C. Batchelder; J. C. Blackmon; C. R. Brune; A. E. Champagne; J. A. Cizewski; T. Davinson; U. Greife; C. J. Gross; C. C. Jewett; R. J. Livesay; Z. Ma; B. H. Moazen; C. D. Nesaraja; L. Sahin; J. P. Scott; D. Shapira; M. S. Smith; J. S. Thomas; P. J. Woods

    2005-01-11T23:59:59.000Z

    The degree to which the (p,gamma) and (p,alpha) reactions destroy 18F at temperatures 1-4x10^8 K is important for understanding the synthesis of nuclei in nova explosions and for using the long-lived radionuclide 18F, a target of gamma-ray astronomy, as a diagnostic of nova mechanisms. The reactions are dominated by low-lying proton resonances near the 18F+p threshold (E_x=6.411 MeV in 19Ne). To gain further information about these resonances, we have used a radioactive 18F beam from the Holifield Radioactive Ion Beam Facility to selectively populate corresponding mirror states in 19F via the inverse d(18F,p)19F neutron transfer reaction. Neutron spectroscopic factors were measured for states in 19F in the excitation energy range 0-9 MeV. Widths for corresponding proton resonances in 19Ne were calculated using a Woods-Saxon potential. The results imply significantly lower 18F(p,gamma)19Ne and 18F(p,alpha)15O reaction rates than reported previously, thereby increasing the prospect of observing the 511-keV annihilation radiation associated with the decay of 18F in the ashes ejected from novae.

  19. Scotia Wind 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 on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of Inspector GeneralDepartmentAUDIT REPORTOpenWende New EnergyAnatoliaScira Offshore Energy Jump to:

  20. Simulations of laser imprint for Nova experiments and for ignition capsules. Revision 1

    SciTech Connect (OSTI)

    Weber, S.V.; Glendinning, S.G.; Kalantar, D.H.; Key, M.H.; Remington, B.A.; Rothenberg, J.L. [Lawrence Livermore National Lab., CA (United States); Wolfrum, E. [Rutherford Appleton Lab., Chilton (United Kingdom); Verdon, C.P.; Knauer, J.P. [Rochester Univ., NY (United States). Lab. for Laser Energetics

    1996-12-01T23:59:59.000Z

    In direct drive ICF, nonuniformities in laser illumination seed ripples at the ablation front in a process called ``imprint``. These nonuniformities grow during the capsule implosion and, if initially large enough, can penetrate the capsule shell, impede ignition, or degrade burn. Imprint has been simulated for recent experiments performed on the Nova laser at LLNL examining a variety of beam smoothing conditions. Most used laser intensities similar to the early part of an ignition capsule pulse shape, 1 {approx_equal} 10{sup 13} W/cm{sup 2} . The simulations matched most of the measurements of imprint modulation. The effect of imprint upon National Ignition Facility (NIF) direct drive ignition capsules has also been simulated. Imprint is predicted to give modulation comparable to an intrinsic surface finish of {approximately}10 nm RMS. Modulation growth was examined using the Haan [Phys. Rev. A {bold 39}, 5812 (1989)] model, with linear growth factors as a function of spherical harmonic mode number obtained from an analytic dispersion relation. Ablation front amplitudes are predicted to become substantially nonlinear, so that saturation corrections are large. Direct numerical simulations of two-dimensional multimode growth were also performed. The capsule shell is predicted to remain intact, which gives a basis for believing that ignition can be achieved. 27 refs., 10 figs.

  1. Simulations of laser imprint for Nova experiments and for ignition capsules

    SciTech Connect (OSTI)

    Weber, S.V.; Glendinning, S.G.; Kalantar, D.H.; Key, M.H.; Remington, B.A.; Rothenberg, J.E.; Wolfrum, E.; Verdon, C.P.; Knauer, J.P.

    1996-11-08T23:59:59.000Z

    In direct drive ICF, nonuniformities in laser illumination seed ripples at the ablation front in a process called imprint. These non nonuniformities grow during the capsule implosion and, if initially large enough, can penetrate the capsule shell, impede ignition, or degrade burn. Imprint has been simulated for recent experiments performed on the Nova laser at LLNL examining a variety of beam smoothing conditions. Most used laser intensities similar to the early part of an ignition capsule pulse shape, I=10X13 W/cm3. The simulations matched most of the measurements of imprint modulation. The effect of imprint upon National Ignition Facility (NIF) direct drive ignition capsules has also been simulated. Imprint is predicted to give modulation comparable to an intrinsic surface finish of 10 nm RMS. Modulation growth was examined using the Haan model, with linear growth as a function of spherical harmonic mode number obtained from an analytic dispersion relation. Ablation front amplitudes are predicted to become substantially nonlinear, so that saturation corrections are large. Direct numerical simulations of two- dimensional multimode growth were also performed. The capsule shell is predicted to remain intact, which gives a basis for believing that ignition can be achieved.

  2. The Masses and Evolutionary State of the Stars in the Dwarf Nova SS Cygni

    E-Print Network [OSTI]

    Martin A. Bitner; Edward L. Robinson; Bradford B. Behr

    2007-03-05T23:59:59.000Z

    The dwarf nova SS Cygni is a close binary star consisting of a K star transferring mass to a white dwarf by way of an accretion disk. We have obtained new spectroscopic observations of SS Cyg with the Hobby-Eberly Telescope (HET). Fits of synthetic spectra for Roche-lobe-filling stars to the absorption-line spectrum of the K star yield the amplitude of the K star's radial velocity curve and the mass ratio: K_{K} = 162.5 +/- 1.0 km/s and q= M_{K} /M_{wd} = 0.685 +/- 0.015. The fits also show that the accretion disk and white dwarf contribute a fraction f = 0.535 +/- 0.075 of the total flux at 5500 angstroms. Taking the weighted average of our results with previously published results obtained using similar techniques, we find = 163.7 +/- 0.7 km/s and = 0.683 +/- 0.012. The orbital light curve of SS Cyg shows an ellipsoidal variation diluted by light from the disk and white dwarf. From an analysis of the ellipsoidal variations we limit the orbital inclination to the range 45 deg. <= i <= 56 deg. The derived masses of the K star and white dwarf are M_{K} = 0.55 +/- 0.13 M_sun and M_{wd} = 0.81 +/- 0.19 M_sun, where the uncertainties are dominated by systematic errors in the orbital inclination. The K star in SS Cyg is 10% to 50% larger than an unevolved star with the same mass and thus does not follow the mass-radius relation for Zero-Age Main-Sequence stars; nor does it follow the ZAMS mass/spectral-type relation. Its mass and spectral type are, however, consistent with models in which the core hydrogen has been significantly depleted.

  3. First Direct Measurement of the ^{17}O(p,?)^{18}F Reaction Cross-Section at Gamow Energies for Classical Novae

    E-Print Network [OSTI]

    D. A. Scott; A. Caciolli; A. DiLeva; A. Formicola; M. Aliotta; M. Anders; D. Bemmerer; C. Broggini; M. Campeggio; P. Corvisiero; Z. Elekes; Zs. Flp; G. Gervino; A. Guglielmetti; C. Gustavino; Gy. Gyrky; G. Imbriani; M. Junker; M. Laubenstein; R. Menegazzo; M. Marta; E. Napolitani; P. Prati; V. Rigato; V. Roca; E. Somorjai; C. Salvo; O. Straniero; F. Strieder; T. Szcs; F. Terrasi; D. Trezzi

    2012-10-24T23:59:59.000Z

    Classical novae are important contributors to the abundances of key isotopes, such as the radioactive ^{18}F, whose observation by satellite missions could provide constraints on nucleosynthesis models in novae. The ^{17}O(p,\\gamma)^{18}F reaction plays a critical role in the synthesis of both oxygen and fluorine isotopes but its reaction rate is not well determined because of the lack of experimental data at energies relevant to novae explosions. In this study, the reaction cross section has been measured directly for the first time in a wide energy range Ecm = 200 - 370 keV appropriate to hydrogen burning in classical novae. In addition, the E=183 keV resonance strength, \\omega \\gamma=1.67\\pm0.12 \\mueV, has been measured with the highest precision to date. The uncertainty on the ^{17}O(p,\\gamma)^{18}F reaction rate has been reduced by a factor of 4, thus leading to firmer constraints on accurate models of novae nucleosynthesis.

  4. Review of Environmental Goals and Sustainable Prosperity Act A submission to

    E-Print Network [OSTI]

    Hughes, Larry

    ERG/201105 Review of Environmental Goals and Sustainable Prosperity Act A submission to the Nova to the call for comments on the Government of Nova Scotia's 2011 review of the Environmental Goals uninterrupted physical availability at a price which is affordable, while respecting environment concerns" (IEA

  5. New 34Cl proton-threshold states and the thermonuclear 33S(p,gamma)34Cl rate in ONe novae

    E-Print Network [OSTI]

    A. Parikh; T. Faestermann; R. Hertenberger; R. Kruecken; D. Schafstadler; H. -F. Wirth; T. Behrens; V. Bildstein; S. Bishop; K. Eppinger; C. Herlitzius; C. Hinke; M. Schlarb; D. Seiler; K. Wimmer

    2009-06-19T23:59:59.000Z

    Analysis of presolar grains in primitive meteorites has shown isotopic ratios largely characteristic of the conditions thought to prevail in various astrophysical environments. A possible indicator for a grain of ONe nova origin is a large 33S abundance: nucleosynthesis calculations predict as much as 150 times the solar abundance of 33S in the ejecta of nova explosions on massive ONe white dwarfs. This overproduction factor may, however, vary by factors of at least 0.01 - 3 because of uncertainties of several orders of magnitude in the 33S(p,gamma)34Cl reaction rate at nova peak temperatures (Tpeak ~ 0.1 - 0.4 GK). These uncertainties arise due to the lack of nuclear physics information for states within ~ 600 keV of the 33S+p threshold in 34Cl (Sp(34Cl) = 5143 keV). To better constrain this rate we have measured, for the first time, the 34S(3He,t)34Cl reaction over the region Ex(34Cl) = 4.9 - 6 MeV. We confirm previous states and find 15 new states in this energy region. New 33S(p,gamma)34Cl resonances at ER = 281(2), 301(2) and 342(2) keV may dominate this rate at relevant nova temperatures. Our results could affect predictions of sulphur isotopic ratios in nova ejecta (e.g., 32S/33S) that may be used as diagnostic tools for the nova paternity of grains.

  6. Workshop: Novas Abordagens para Monitorar a Queima de Biomassa (New Approaches to Monitor Biomass Burning) Coordenador: Emilio Chuvieco (University of Alcal, Spain)

    E-Print Network [OSTI]

    Workshop: Novas Abordagens para Monitorar a Queima de Biomassa (New Approaches to Monitor Biomass relevant topics associated to monitoring biomass burnings from satellite data, both at global and regional scales. Hora Título das Palestras Apresentador 9:00 Opening 9:10 Global Monitoring of Biomass Burning

  7. XMM-NEWTON X-RAY AND ULTRAVIOLET OBSERVATIONS OF THE FAST NOVA V2491 Cyg DURING THE SUPERSOFT SOURCE PHASE

    SciTech Connect (OSTI)

    Ness, J.-U. [XMM-Newton Science Operations Centre, ESA, Madrid (Spain); Osborne, J. P.; Page, K. L.; Beardmore, A. P. [Department of Physics and Astronomy, University of Leicester, Leicester, LE1 7RH (United Kingdom); Dobrotka, A. [Department of Physics, Institute of Materials Science, Faculty of Materials Science and Technology, Slovak University of Technology in Bratislava, 91724 Trnava (Slovakia); Drake, J. J. [Harvard-Smithsonian Center for Astrophysics, Cambridge, MA 02138 (United States); Pinto, C.; Detmers, R. G. [SRON Netherlands Institute for Space Research, 3584 CA Utrecht (Netherlands); Schwarz, G. [American Astronomical Society, Washington, DC 20009-1231 (United States); Bode, M. F. [Astrophysics Research Institute, Liverpool John Moores University, Birkenhead CH41 1LD (United Kingdom); Starrfield, S. [School of Earth and Space Exploration, Arizona State University, Tempe, AZ 85287-1404 (United States); Hernanz, M. [Institut de Ciencies de l'Espai (CSIC-IEEC), Campus UAB, Facultat de Ciencies, 08193 Bellaterra (Barcelona) (Spain); Sala, G. [Departament Fisica i Enginyeria Nuclear, EUETIB (UPC-IEEC), 08036 Barcelona (Spain); Krautter, J. [Landessternwarte Koenigstuhl, Universitaet Heidelberg, D-69117 Heidelberg (Germany); Woodward, C. E. [Department of Astronomy, University of Minnesota, Minneapolis, MN 55455 (United States)

    2011-05-20T23:59:59.000Z

    Two XMM-Newton observations of the fast classical nova V2491 Cyg were carried out in short succession on days 39.93 and 49.62 after discovery, during the supersoft source (SSS) phase, yielding simultaneous X-ray and UV light curves and high-resolution X-ray spectra. The first X-ray light curve is highly variable, showing oscillations with a period of 37.2 minutes after an extended factor of three decline lasting {approx}3 hr, while the second X-ray light curve is less variable. The cause of the dip is currently unexplained and has most likely the same origin as similar events in the early SSS light curves of the novae V4743 Sgr and RS Oph, as it occurred on the same timescale. The oscillations are not present during the dip minimum and also not in the second observation. The UV light curves are variable but contain no dips and no period. High-resolution X-ray spectra are presented for four intervals of differing intensity. All spectra are atmospheric continua with deep absorption lines and absorption edges. Two interstellar lines of O I and N I are clearly seen at their rest wavelengths, while a large number of high-ionization absorption lines are found at blueshifts indicating an expansion velocity of 3000-3400 km s{sup -1}, which does not change significantly during the epochs of observation. Comparisons with the slower nova V4743 Sgr and the symbiotic recurrent nova RS Oph are presented. The SSS spectrum of V4743 Sgr is much softer with broader and more complex photospheric absorption lines. The ejecta are extended, allowing us to view a larger range of the radial velocity profile. Meanwhile, the absorption lines in RS Oph are as narrow as in V2491 Cyg, but they are less blueshifted. A remarkable similarity in the continua of V2491 Cyg and RS Oph is found. The only differences are smaller line shifts and additional emission lines in RS Oph that are related to the presence of a dense stellar wind from the evolved companion. Three unidentified absorption lines are present in the X-ray spectra of all three novae, with projected rest wavelengths 26.05 A, 29.45 A, and 30.0 A. No entirely satisfactory spectral model is currently available for the soft X-ray spectra of novae in outburst, and careful discussion of assumptions is required.

  8. GK Per (Nova Persei 1901): HUBBLE SPACE TELESCOPE IMAGERY AND SPECTROSCOPY OF THE EJECTA, AND FIRST SPECTRUM OF THE JET-LIKE FEATURE

    SciTech Connect (OSTI)

    Shara, Michael M.; Zurek, David; Mizusawa, Trisha [Department of Astrophysics, American Museum of Natural History, Central Park West and 79th street, New York, NY 10024-5192 (United States); De Marco, Orsola [Department of Physics, Macquarie University, Sydney (Australia); Williams, Robert; Livio, Mario [Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218 (United States)

    2012-06-15T23:59:59.000Z

    We have imaged the ejecta of GK Persei (Nova Persei 1901 A.D.) with the Hubble Space Telescope (HST), whose 0.1 arcsec resolution reveals hundreds of cometary-like structures with long axes aligned toward GK Per. One or both ends of the structures often show a brightness enhancement relative to the structures' middle sections, but there is no simple regularity to their morphologies (in contrast with, for example, the Helix nebula). Some of structures' morphologies suggest the presence of slow-moving or stationary material with which the ejecta is colliding, while others suggest shaping from a wind emanating from GK Per itself. The most detailed expansion map of any classical nova's ejecta was created by comparing HST images taken in successive years. Wide Field and Planetary Camera 2 narrowband images and Space Telescope Imaging Spectrograph spectra demonstrate that the physical conditions in this nova's ejecta vary strongly on spatial scales much smaller than those of the ejecta. Directly measuring accurate densities and compositions, and hence masses of this and other nova shells, will demand data at least as resolved spatially as those presented here. The filling factor of the ejecta is 1% or less, and the nova ejecta mass must be less than 10{sup -4} M{sub Sun }. A modest fraction of the emission nebulosities vary in brightness by up to a factor of two on timescales of one year. Finally, we present the deepest images yet obtained of a jet-like feature outside the main body of GK Per nebulosity, and the first spectrum of that feature. Dominated by strong, narrow emission lines of [N II], [O II], [O III], and [S II], this feature is probably a shock due to ejected material running into stationary interstellar matter, slowly moving ejecta from a previous nova episode, or circumbinary matter present before 1901. An upper limit to the mass of the jet is of order a few times 10{sup -6} M{sub Sun }. If the jet mass is close to this limit then the jet might be an important, or even dominant mass sink from the binary system. The jet's faintness suggests that similar features could easily have been missed in other cataclysmic binaries.

  9. Paru dans : T. S. Cuesta y X. X. Neira, 2008, Auga e sustentabilidade. Enfoques para unha nova poltica de augas, Lugo, Universidade de Santiago de Compostela : 11-15.

    E-Print Network [OSTI]

    Boyer, Edmond

    1 Paru dans : T. S. Cuesta y X. X. Neira, 2008, Auga e sustentabilidade. Enfoques para unha nova (França) halshs-00510022,version1-17Aug2010 Author manuscript, published in "Auga e sustentabilidade

  10. KNORR 151 LEG-III CRUISE SUMMARY: A20 HALIFAX--TRINIDAD

    E-Print Network [OSTI]

    Pickart, Robert S.

    the Newfoundland shelf to the Suriname shelf, nominally along 52 degrees W. This section, known as A20, is part

  11. National Student Conference in Metallic Materials Halifax Hall, Endcliffe Village, University of Sheffield

    E-Print Network [OSTI]

    Cambridge, University of

    Stir Welding Sam Gascoyne1 , BP Wynne1 , PB Prangnell2 , 1 Advanced Metallic Systems CDT, University;Linear friction welding of aluminium to copper Imran Bhamji, RJ Moat, M Preuss, PL Threadgill, AC Addison Session B1 Joining, Ennis Room Chair Alexandra Panteli, The University of Manchester Corner Friction

  12. X-ray Eclipse Diagnosis of the Evolving Mass Loss in the Recurrent Nova U Scorpii 2010

    E-Print Network [OSTI]

    Takei, D; Tsujimoto, M; Ness, J -U; Osborne, J P; Starrfield, S; Kitamoto, S

    2013-01-01T23:59:59.000Z

    We report the Suzaku detection of the earliest X-ray eclipse seen in the recurrent nova U Scorpii 2010. A target-of-opportunity observation 15 days after the outburst found a 27+/-5% dimming in the 0.2-1.0 keV energy band at the predicted center of an eclipse. In comparison with the X-ray eclipse depths seen at two later epochs by XMM-Newton, the source region shrank by about 10-20% between days 15 and 35 after the outburst. The X-ray eclipses appear to be deeper than or similar to contemporaneous optical eclipses, suggesting the X-ray and optical source region extents are comparable on day 15. We raise the possibility of the energy dependency in the photon escape regions, and that this would be a result of the supersoft X-ray opacity being higher than the Thomson scattering optical opacity at the photosphere due to bound-free transitions in abundant metals that are not fully ionized. Assuming a spherically symmetric explosion model, we constrain the mass-loss rate as a function of time. For a ratio of actual...

  13. X-RAY ECLIPSE DIAGNOSIS OF THE EVOLVING MASS LOSS IN THE RECURRENT NOVA U SCORPII 2010

    SciTech Connect (OSTI)

    Takei, D.; Drake, J. J. [Smithsonian Astrophysical Observatory, 60 Garden Street, Cambridge, MA 02138 (United States); Tsujimoto, M. [Japan Aerospace Exploration Agency, Institute of Space and Astronautical Science, 3-1-1 Yoshino-dai, Chuo-ku, Sagamihara, Kanagawa 252-5210 (Japan); Ness, J.-U. [European Space Agency, XMM-Newton Observatory SOC, SRE-OAX, Apartado 78, E-28691 Villanueva de la Canada, Madrid (Spain); Osborne, J. P. [Department of Physics and Astronomy, University of Leicester, Leicester LE1 7RH (United Kingdom); Starrfield, S. [School of Earth and Space Exploration, Arizona State University, Tempe, AZ 85287-1404 (United States); Kitamoto, S., E-mail: dtakei@head.cfa.harvard.edu [Department of Physics, Rikkyo University, 3-34-1 Nishi-Ikebukuro, Toshima, Tokyo 171-8501 (Japan)

    2013-05-20T23:59:59.000Z

    We report the Suzaku detection of the earliest X-ray eclipse seen in the recurrent nova U Scorpii 2010. A target-of-opportunity observation 15 days after the outburst found a 27% {+-} 5% dimming in the 0.2-1.0 keV energy band at the predicted center of an eclipse. In comparison with the X-ray eclipse depths seen at two later epochs by XMM-Newton, the source region shrank by about 10%-20% between days 15 and 35 after the outburst. The X-ray eclipses appear to be deeper than or similar to contemporaneous optical eclipses, suggesting the X-ray and optical source region extents are comparable on day 15. We raise the possibility of the energy dependency in the photon escape regions, and that this would be a result of the supersoft X-ray opacity being higher than the Thomson scattering opacity at the photosphere due to bound-free transitions in abundant metals that are not fully ionized. Assuming a spherically symmetric model, we constrain the mass-loss rate as a function of time. For a ratio of actual to Thomson opacity of 10-100 in supersoft X-rays, we find an ejecta mass of about 10{sup -7}-10{sup -6} M{sub Sun }.

  14. The superluminous SN DES13S2cmm as a signature of a Quark-Nova in a He-HMXB system

    E-Print Network [OSTI]

    Ouyed, Rachid; Koning, Nico

    2015-01-01T23:59:59.000Z

    We show that by appealing to a Quark-Nova (the explosive transition of a neutron star to a quark star) occurring in an He-HMXB system we can account for the lightcurve of the first superluminous SN, DES13S2cmm, discovered by the Dark-Energy Survey. The neutron star's explosive conversion is triggered as a result of accretion from the He star wind. The dense, relativistic, Quark-Nova ejecta in turn triggers nuclear burning of the companion. We find an excellent fit to the bolometric light-curve of SN DES13S2cmm including the late time emission, which we attribute to the interaction between ejecta from the exploding He star (from the incinerated donor) and the surrounding circumstellar material from the companion (from the donor's wind during the pre-explosion era). The main hump in the light-curve is naturally fit by the quark star (the QN compact remnant) spin-down power. QNe occurring in He-HMXB systems could explain the puzzling lack of He-HMXBs expected to be associated with the observed large population o...

  15. Biblioteca Universitria -Novas aquisies

    E-Print Network [OSTI]

    Floeter, Sergio Ricardo

    Paulo (SP): Brasiliense, 1994. 93 p. t. ex.: 1ELETROBRÁS. Dicionário da energia elétrica Eletrobrás.: 2REP?RTER Brasil: 10 anos de estrada de terra em 17 grandes reportagens. São Paulo: [s.n.], 2012 209 p. 1 #12;t. ex.: 5TAVARES, Elaine. Em busca da utopia: os caminhos da reportagem no Brasil dos anos

  16. Biogeography of Marine Algae

    E-Print Network [OSTI]

    Biogeography of Marine Algae David J Garbary, St Francis Xavier University, Antigonish, Nova Scotia and vicariance in establishing distributions and as factors associated with speciation. Since eukaryotic algae. There are many species that are virtually cosmopolitan (e.g. the green alga Enteromorpha intestinalis, the red

  17. Revised April 2013 Faculty of Graduate Studies Website

    E-Print Network [OSTI]

    Lotze, Heike K.

    of Applied Multiphase Thermal Engineering Nova Scotia CAD/CAM Centre Renewable Energy Storage Lab GRADUATE generation) Energy and Heat Transfer (renewable energy storage, energy conversion and management, heat, Phase Change and multiphase process, Renewable energy (Solan, Tidal), Energy Storage, Conversion

  18. 2000 Blackwell Science Ltd. http://www.blackwell-science.com/ddi 113 BIODIVERSITY RESEARCH

    E-Print Network [OSTI]

    Kolasa, Jurek

    and MICHAEL J. RISK3 1 Department of Geology, St Francis Xavier University, PO Box 5000, Antigonish, Nova Scotia, Canada B2G 2W5, 2 School of Geography and Geology, McMaster University, Hamilton, Ontario, Canada, overfishing, destructive fishing practices, oil spills and other forms of anthropogenic damage (Guzman et al

  19. 37 | P a g e Activity 10

    E-Print Network [OSTI]

    Brownstone, Rob

    resources). · Baking ingredients · Table #12; 38 | P a g e · Sterile reused and recyclable. Online resources, creative posters on recycled newspaper or cardboard, and chalkgraffiti are all viable://www.gov.ns.ca/agri/marketing/recipes/seasons.pdf o Select Nova Scotia's resource page: http://www.selectnovascotia.ca · Inseason fruits

  20. 46 | P a g e Activity 14

    E-Print Network [OSTI]

    Brownstone, Rob

    Time: 13 hours Place: A) Any local building of innovative sustainable design that is open://www.ecologyaction.ca/newhome/project.htm. · Faculty of Management: Kenneth Rowe Building. · Solar Nova Scotia: Guided sustainable home tour. For more of sustainability features of the new building on Coburg and LeMarchant and of sustainability upgrades. #12; 47

  1. Vegetative and reproductive innovations of early land plants: implications for a

    E-Print Network [OSTI]

    Nickrent, Daniel L.

    Vegetative and reproductive innovations of early land plants: implications for a uni ed phylogeny Karen Sue Renzaglia1 , R. Joel Du¡1 {, Daniel L. Nickrent1 and David J. Garbary2 1Department of Plant (renzaglia@plant.siu.edu) 2 Department of Biology, St Francis Xavier University, Antigonish, Nova Scotia

  2. North American Journal of Fisheries Management 22:770784, 2002 Copyright by the American Fisheries Society 2002

    E-Print Network [OSTI]

    Myers, Ransom A.

    Hydroelectric Generating Station, Nova Scotia A. JAMIE F. GIBSON* Acadia Centre for Estuarine Research, Post structures such as the intake pipes at cooling water plants or the turbine intakes at hydroelectric abundance, behavior, and rates of passage at hydroelectric stations vary considerably in re- sponse

  3. CROP SCIENCE, VOL. 51, MARCHAPRIL 2011 585 Birdsfoot trefoil is a perennial forage legume grown for pas-

    E-Print Network [OSTI]

    Pawlowski, Wojtek

    Canada. It is generally well adapted to poorly-drained, acidic, and drought-prone soils, which populations to unselected populations in field trials. Recurrent phenotypic selection was effective; Y.A. Papadopoulos, Agriculture and Agri-Food Canada, Nova Scotia Agri- cultural College, P.O. Box

  4. DELINEATION OF TILEFISH, LOPHOLATILUS CHAMAELEONTICEPS, STOCKS ALONG

    E-Print Network [OSTI]

    . It was suggested that Mid- Atlantic Bight populations be treated as a separate stock and, as a working hypothesis, that South Atlantic and Gulf of Mexico populations be considered as a second stock. Tilefish, Lopholatilus chamaeleonticeps, are dis- tributed from southern Nova Scotia (Leim 1960; Markle et al. 1980) south to off Surinam

  5. EA-355 Scotia Capital Energy, Inc. | 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:Year in Review: TopEnergy DOEDealingVehicle1 Closing American Electric0-A S.A.C.94-A-B1 DC245

  6. Hubble Space Telescope imaging and ground-based spectroscopy of old nova shells - I. FH Ser, V533 Her, BT Mon, DK Lac, V476 Cyg

    E-Print Network [OSTI]

    C. D. Gill; T. J. O'Brien

    2000-01-06T23:59:59.000Z

    In this paper we report on the first five out of eleven observations in our programme of Hubble Space Telescope (HST) imaging of old nova shells. We present new WFPC2 images of the shells around FH Ser and V533 Her taken in the F656N (Halpha+[NII]) filter. We also show long-slit spectra taken using the William Herschel Telescope (WHT) in La Palma for these objects in the same spectral range. The shell around FH Ser is found to be a prolate ellipsoid of ellipticity 1.3 +/- 0.1 inclined at 62 +/- 4 deg to the line of sight. The shell has an equatorial ring which is found to be due to increased emission in the two [NII] lines rather than Halpha. The expansion velocity, systemic velocity and distance are found to be 490 +/- 20 km/s, -45 km/s and 950 +/- 50 pc. The origin of the [NII] equatorial ring is discussed in the context of a photoionization feature resulting from aspherical illumination by the central source rather than a simple density enhancement. It is possible however that the ring is also in part due to an extremely localised increase in the nitrogen abundance. Similar imaging and spectroscopy of the nova V533 Her reveal a shell of radius 5 +/- 0.7 arcsec with an axial ratio of 1.2 +/- 0.2, expansion velocity of 850 +/- 150 km/s and distance 1250 +/- 300 pc. The shells around BT Mon, DK Lac and V476 Cyg were not detected with HST.

  7. 4 th International Conference on Short & Medium bridges, Halifax, 8-11, August, 1994. Fiber Optic Sensing for Bridges

    E-Print Network [OSTI]

    is the first in the world to use two types of carbon fiber composite prestressing tendons in several of its {steel and two types of carbon fiber composite} of prestressing tendons to be tracked over several months abe prospect of replacing this steel with carbon fiber based composite materials.1llese fiber reinfor

  8. Universidade Nova de Lisboa Description

    E-Print Network [OSTI]

    Bristol, University of

    it the 20th largest suspension bridge in the world. It looks eerily very much like the Golden Gate Bridge stunning sights in Lisbon is the 25 de Abril Bridge which stretches for around 2,277 meters, making

  9. Industry Liaison and Innovation 1344 Summer St., Suite 207 PO Box 15000 Halifax, NS Canada B3H 4R2

    E-Print Network [OSTI]

    Brownstone, Rob

    -494-3509 · Fax: 902-494-5189 · www.dalinnovation.com! ! Science and Technology Collaboration University-sized enterprises (SMEs) ­ commercial enterprises with less than 500 employees. This initiative will help firms · enhanced product functionality · environmental technology issues INITIATING THE PROCESS The company must

  10. Large Engineering Systems Conference on Power Engineering, July 2004, Halifax Canada. IEEE 2004 1 Abstract--One important assumption in a model of an

    E-Print Network [OSTI]

    is with the Department of Electrical and Computer Engineering, University of Wisconsin, Madison, WI 53706 USA (e Abstract--One important assumption in a model of an electricity market is the format of bids and costs. Most literature on electricity markets uses piecewise linear or quadratic functions to represent costs

  11. Application to Export Electric Energy OE Docket No. EA-355 Scotia Capital

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "of EnergyEnergy Cooperation |South42.2 (April 2012)Tie Ltd |Line, LLC: Federal Register NoticeEnergy |

  12. Nova Science Publishers, Inc. Hauppauge, New York

    E-Print Network [OSTI]

    Hossain, M. Enamul

    . INTRODUCTION The impact of viscosity in reservoir is directly related to oil production. The mobility Technology, Volume 1, Issue 4, 2007 A Novel Memory Based Stress-Strain Model for Reservoir Characterization Science and Sustainable Technology, Volume 1, Issue 4, 2007 A Novel Memory Based Stress-Strain Model

  13. Skip to content NovaScience

    E-Print Network [OSTI]

    Rogers, John A.

    emitters known as organic LEDs, which can be assembled using electrically conductive polymers and deposited. Now researchers have bridged the gap between organic and inorganic LEDs by harnessing the light of conventional electronics in an elastic system with biomedical potential. "The applications we're interested

  14. Novas Aplicaes das Matemticas na Indstria

    E-Print Network [OSTI]

    Saeki, Osamu

    Arithmetic-Cryptography Kao Corporation Graph Theory-Optimization OLM Digital, Inc. CG of animation Geometry. MAZDA MOTOR CORP. KDDI HITACHI IBM Japan ETRI, Korea OLM Digital, Inc. & WETA Digital, New Zealand. Mitsubishi Research Inst. Inc. MAZDA MOTOR CORP. KDDI HITACHI IBM Japan ETRI, Korea OLM Digital, Inc. & WETA

  15. A NOVA ECONOMIA: NANOTECNOLOGIA Paulo J. Ferreira*

    E-Print Network [OSTI]

    Ferreira, Paulo J.

    esteja ainda na sua infância, já é possível demonstrar que esta área terá um impacto tremendo nos vários aspectos de vida humana, tais como a saúde, o ambiente, a energia, os transportes, a tecnologia de nanotecnologia deste tipo. Qual vai ser então o impacto económico da nanotecnologia? As primeiras estimativas

  16. NOVAS REGRAS CONSTRUO REABILITAO URBANAAMEAASEGURANA DOS MORADORES

    E-Print Network [OSTI]

    Instituto de Sistemas e Robotica

    Arquite - tos, que pergunta: "? a vida das pessoas que está em causa. Num sismo, a eficiência energética e edifícios, estamos a aumentar o risco e a elevar o número de mortes em caso de sismo. Se já caem vazios

  17. -e Series Models 25 and 26 NovaWin/NovaWin-CFR

    E-Print Network [OSTI]

    Alpay, S. Pamir

    , lamps, fuses, valve plungers, seals, O-rings & other seals, hoses, flexible tubing, thermocouple vacuum tubes, filters, oils and other fluids. Products sold by Quantachrome under their own brand name

  18. Companies Operating a Matching Gift Scheme 3i Deutschland GmbH

    E-Print Network [OSTI]

    Royal Holloway, University of London

    Royal Exchange plc Halifax plc HSBC Midland plc IBM IDEO Industrial Bank of Japan Innogy Plc Invensys J

  19. Room 108, Henry Hicks Academic Administration Building 6299 South Street P.O. Box 15000 Halifax, NS B3H 4R2 Canada Tel: 902.494. 2586 Fax: 902.494.1658 www.dal.ca

    E-Print Network [OSTI]

    Brownstone, Rob

    Room 108, Henry Hicks Academic Administration Building · 6299 South Street · P.O. Box 15000's Science College of Sustainability 1year postreview progress updates 201314 201415 201516 Engineering Science Management King's Medicine College of Sustainability #12;Room 108, Henry

  20. NoVaS Transformations: Flexible Inference for Volatility Forecasting

    E-Print Network [OSTI]

    Politis, Dimitris N; Thomakos, Dimitrios D

    2008-01-01T23:59:59.000Z

    estimators of the parameters in GARCH processes, Annals ofand Switching-Regime GARCH Models, Stochastic Processes andParameter Changes in GARCH Models, Journal of Econo-

  1. Overview of the SuperNova/Acceleration probe (SNAP)

    E-Print Network [OSTI]

    2002-01-01T23:59:59.000Z

    from 42 High-Redshift Supernovae, Astrophys J. 517, pp.Observational Evidence from Supernovae for an AcceleratingEnergy with Type Ia Supernovae and Large-Scale Structure,

  2. Nova Publishers Smart Grid: Technologies, Applications and Management Systems

    E-Print Network [OSTI]

    Pedram, Massoud

    a particularly interesting problem with the introduction of dynamic electricity energy pricing models, since period of a month, which is comprised of both an energy price component and a demand price component. Due to the characteristics of the realistic electricity price function and the energy storage capacity limitation

  3. alimentos fortificados nova: Topics by E-print Network

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

    appeared in M31 globular clusters. Our light curve models, based on the optically thick wind theory, reproduce well both the X-ray turn-on and turnoff times with the white dwarf...

  4. QANU Research Review11 NOVA and Astronomy 201012

    E-Print Network [OSTI]

    van Suijlekom, Walter

    ), with appendices44 2. Copies of three key publications per research programme.45 46 Remarks concerning the overall to world astronomy far49 disproportionate to its population or GDP. These contributions include50 51 ­ best in the world in the fields of7 astrochemistry/astromineralogy8 Network 3: High-Energy Astrophysics

  5. Biblioteca Universitria-Novas Aquisies V. 6 N. 9 2014

    E-Print Network [OSTI]

    Floeter, Sergio Ricardo

    .). Evaluación de sustentabilidad: un enfoque dinámico y multidimensional. 1. ed. Catarroja (Espanha): Valencia

  6. Biblioteca Universitria -Novas aquisies V. 6 N. 07 2014

    E-Print Network [OSTI]

    Floeter, Sergio Ricardo

    ; MORALEZ, Rafael (Org.). Energia, desenvolvimento e sustentabilidade. 1. ed. Porto Alegre: Zouk, 2014 396 p

  7. Ncleo Interdisciplinar de Meio Ambiente Prefeitura Municipal de Nova Iguau

    E-Print Network [OSTI]

    as sustentabilidades na Baixada Fluminense Adélia Santos Araújo, Augusto César Pinheiro da Silva 86 Sistema Nacional de

  8. Biblioteca Universitria -Novas aquisies V. 5 N. 7 2013

    E-Print Network [OSTI]

    Floeter, Sergio Ricardo

    candidato ; 610) ISBN 9788576314042 Quantidade : 1 SEN, Amartya Kumar. A ideia de justiça. São Paulo

  9. FEI Nova 200 Dual-Beam SEM/FIB

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation ProposedUsing ZirconiaPolicy andExsolution Enhancedenvironmental

  10. FEI Nova 200 Dual-Beam SEM/FIB

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation ProposedUsing ZirconiaPolicy andExsolution EnhancedenvironmentalCurrent Research Activities: *

  11. FEI Nova 200 Dual-Beam SEM/FIB

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation ProposedUsing ZirconiaPolicy andExsolution EnhancedenvironmentalCurrent Research Activities:

  12. Fermilab | Newsroom | Press Releases | February 2014: NOvA Images

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation ProposedUsing ZirconiaPolicyFeasibility ofSmall15.000 Rev.Group Robert05Down asIllinoisShow

  13. Fermilab | Newsroom | Press Releases | March 2013: NOvA Photos

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation ProposedUsing ZirconiaPolicyFeasibility ofSmall15.000 Rev.Groupthat Milky Way wasNOvA: photos

  14. Sandia National Laboratories: Sandian Mark Boslough Featured on NOVA

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 -theErikGroundbreaking Work on CriegeeElectronics

  15. NOVA Portal: Submit VASP Jobs to Carver via the Web

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the Contributions and Achievements of Women |hits 21Species. |RPSEA FinalNOTICE

  16. Cataventos Novas Energias Brasil Ltda | 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 on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of Inspector GeneralDepartmentAUDIT REPORT Americium/CuriumSunways JVGroup India Jump to:Corporation

  17. ccpi-petra nova | netl.doe.gov

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear SecurityTensile Strain Switched5 Industrial Carbon Capture and Storage Clean CoalCoal-Biomass1 Industrial

  18. Sandia National Laboratories: Mark Boslough Featured in NOVA Special about

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 -theErik Spoerke SSLS ExhibitIowaLos AlamosExperimentthe Chelyabinsk Meteor

  19. On the spreading of Weddell Sea deep water in the southwestern Atlantic Ocean

    E-Print Network [OSTI]

    Locarnini, Ricardo A

    1991-01-01T23:59:59.000Z

    Sv (1 Sverdrup = ls10' m'/sec) of WSDW flow from the Scotia Sea into the Georgia Basin. The route through the Scotia Sea, overlooked in previous descriptions of the ocean bottom circulation, can provide a considerable proportion of the cold water... financially supported me during my time at Texas A&M University. TABLE OF CONTENTS Page INTRODUCTION Background. Objectives. Dara and Methods. . BOTTOM CIRCULATION. The South Sandwich Trench Route. The Scotia Sea Route. ll 11 20 THE SCOTIA SEA...

  20. Triassic-Jurassic faunal and floral transition in the Fundy Basin, Nova

    E-Print Network [OSTI]

    Olsen, Paul E.

    outcrops, exposures, cores, and fossils that provide important new clues about the major features of polar ice (Frakes, 1979), this "hot house" world is marked by coal deposition in polar and equatorial through the Gulf of Mexico in the ~40 m.y. preceding the Jurassic opening of the central Atlantic Ocean

  1. jhchang@nova.snu.ac.kr {btzhang,ytkim}@cse.snu.ac.kr Helmholtz machine

    E-Print Network [OSTI]

    , J., Elements of Information Theory, John Wiley & Sons, 1991. [2] Dayan, P., Hinton, G. E., Neal, R. M., Zemel, R. S., "The Helmholtz Machine", Neural Computation, vol. 7, pp. 889- 904, 1995. [3] Frey] Hinton, G. E., Dayan, P., Frey, B. J., and Neal, R. M., "The Wake-Sleep Algorithm for Unsupervised Neural

  2. Experimental study of beta-delayed proton decay of (23)Al for nucleosynthesis in novae

    E-Print Network [OSTI]

    Saastamoinen, A.; Trache, L.; Banu, A.; Bentley, M. A.; Davinson, T.; Hardy, John C.; Iacob, V. E.; McCleskey, M.; Roeder, B. T.; Simmons, E.; Tabacaru, G.; Tribble, Robert E.; Woods, P. J.; Aysto, J.

    2011-01-01T23:59:59.000Z

    . Roeder,2 E. Simmons,2 G. Tabacaru,2,? R. E. Tribble,2 P. J. Woods,4 and J. ?Aysto?1 1Department of Physics, University of Jyva?skyla?, P.O. Box 35 (YFL), FI-40014 Finland 2Cyclotron Institute, Texas A&M University, College Station, Texas 77843-3366, USA...?ja?rvi for their valuable comments. This work has been supported by the Academy of Finland under the Finnish Centre of Excellence Programme 2006-2011 (Project No. 213503, Nuclear and Accelerator Based Physics Programme at JYFL) and by the US Department of Energy under...

  3. Clean Stuff: the Latest from NOVA's "Making Stuff" Mini-Series

    Broader source: Energy.gov [DOE]

    An Argonne National Laboratory scientist discusses transforming plastics say from grocery bags into carbon nanotubes and spheres, which can then be used in lithium-ion batteries, as well as an array of other applications.

  4. BDOS: An open-ended, basic disk operating system for a Nova/Diablo system

    E-Print Network [OSTI]

    Koontz, Joseph Patrick

    1972-01-01T23:59:59.000Z

    4- Z O LJ 2 Vj 2 Z M X Z K CC CW 0 4J I- 4. Q 4 O H Vj LII Q W 2 ILC CI M i Z C N I- C 4l I4 0 ) O O I- 0 0 W V' CI O C ZQ I- W Vj CC cC 4J Z lfl I C W 2 P I- CY X C 4J I- CJ Na ~ 0 W 4I jN M O jo 3 4I W VJ Z I H I I... QO Z 2OCV 4I Y O jN Z H Z j EP cC 4J Vj CI CC c Q 0 ct I 4l Vj ) Q ct 3 Vl Q O O I- 4J ~ LL C 4J Vj WCCJ N Z 4J VIWr Q N Y o xa HWCCI O I-4J QC QN VJCC j M VJLV N H W Z IJ CC M W j jQ'0 jCNO I- ct cJ ") cC Vj Vj O cC W ~ ? I...

  5. Tough Stuff: A Look Back at NOVA's "Making Stuff" Mini-Series

    Broader source: Energy.gov [DOE]

    Learn more about the Department's work with material science, including imitating the structure of mother of pearl to create the toughest ceramic ever produced and developing a new type of damage-tolerant metallic glass that's stronger and tougher than steel.

  6. Mechanical design of ceramic beam tube braze joints for NOvA kicker magnets

    SciTech Connect (OSTI)

    Ader, C.R.; Reilly, R.E.; Wilson, J.H.; /Fermilab

    2010-05-01T23:59:59.000Z

    The NO?A Experiment will construct a detector optimized for electron neutrino detection in the existing NuMI neutrino beam. The NuMI beam line is capable of operating at 400 kW of primary beam power and the upgrade will allow up to 700 kW. Ceramic beam tubes are utilized in numerous kicker magnets in different accelerator rings at Fermi National Accelerator Laboratory. Kovar flanges are brazed onto each beam tube end, since kovar and high alumina ceramic have similar expansion curves. The tube, kovar flange, end piece, and braze foil alloy brazing material are stacked in the furnace and then brazed. The most challenging aspect of fabricating kicker magnets in recent years have been making hermetic vacuum seals on the braze joints between the ceramic and flange. Numerous process variables can influence the robustness of conventional metal/ceramic brazing processes. The ceramic-filler metal interface is normally the weak layer when failure does not occur within the ceramic. Differences between active brazing filler metal and the moly-manganese process will be discussed along with the applicable results of these techniques used for Fermilab production kicker tubes.

  7. Safety and efficacy of NovaSil clay as a dietary supplement to prevent aflatoxicosis

    E-Print Network [OSTI]

    Afriyie-Gyawu, Evans

    2006-04-12T23:59:59.000Z

    of aflatoxins. Although statistically significant changes to a few parameters were noted, the differences did not appear to be NSP- or dose-dependent, suggesting that NSP at dietary inclusion levels as great as 2.0% (w/w) does not produce overt toxicity. Thus...

  8. E-Print Network 3.0 - aplicao das novas Sample Search Results

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

    mesmo que parcial 12;Pblico - psilon ... Source: Instituto de Sistemas e Robotica - Polo de Lisboa (Institute for Systems and Robotics, Lisbon pole) Portugal...

  9. Nova Hedwigia 2013 Vol. 96 issue 34, 351365 published online January 22, 2013

    E-Print Network [OSTI]

    environmental variables (conductivity, pH, and height above water table ­ HWT) appears to be able to explain of diatom frustules caused by the squeezing method. These results allow us to reccommend herbarized Mts. (both in the northern parts of the Czech Republic), represent unique ecosystems within Central

  10. Petra Nova Project Breaks Ground on World's Largest Post-Combustion...

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

    enable cleaner, safer and more sustainable energy production from our abundant fossil energy resources. The Houston-area project, which broke ground today, was awarded 167...

  11. CADERNOS TEMTICOS QUMICA NOVA NA ESCOLA Edio especial FEVEREIRO 2001 ste volume dedicado qumica

    E-Print Network [OSTI]

    Jardim, Wilson de Figueiredo

    concentrações de SO2 observadas naquelas atmosferas urbanas (Thorpe,1872). Estes são apenas al- guns exemplos

  12. Revista Biotemas, 19 (4), dezembro de 2006 Novas ocorrncias de corais azooxantelados no sul do Brasil

    E-Print Network [OSTI]

    Hanazaki, Natalia

    Brasil Captura incidental de tartarugas marinhas na pesca artesanal da Ilha de Santa Catarina, SC Marília ameaçadas de extinção. O sul do Brasil é caracterizado como área de alimentação e criaçãode pelo menos três

  13. Petra Nova Project Breaks Ground on World's Largest Post-Combustion

    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 on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankCombustion |Energy UsageAUDITVehicles »Exchange VisitorsforDepartmentPOET-DSMCarbon Capture Project |

  14. Quim. Nova, Vol. 31, No. 1, 164-171, 2008 NotaTcnica

    E-Print Network [OSTI]

    Ferreira, Márcia M. C.

    (ANVISA)10 e o Instituto Nacional de Metrologia, Normalização e Qualidade Instrumental (INMETRO)11

  15. Dept. of Energy/NOVA announce re-airing on Oct. 16 of special program:

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation Proposed Newcatalyst phasesData Files DataADVANCESDepartmentDepartmentalDeployment of

  16. Fermilab | Newsroom | Press Releases | October 6, 2014: NOvA Images

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation ProposedUsing ZirconiaPolicyFeasibility ofSmall15.000 Rev.Groupthat MilkycomputingIllutration

  17. Fermilab | Newsroom | Press Releases | February 11, 2014: NOvA experiment

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-Series toESnet4:Epitaxial ThinFORFALLSubscription Formphoto:Fermilabgetkickssees

  18. Fermilab | Newsroom | Press Releases | March 28, 2013: NOvA neutrino

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-Series toESnet4:Epitaxial ThinFORFALLSubscriptioncompletedetector records first

  19. Microsoft Word - FINAL NOvA EA Text 061108 _3_.doc

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: VegetationEquipment Surfaces andMappingENVIRONMENTALHYDROPOWER MEETING Tulsa DistrictMarriott Hotel570

  20. Jefferson Lab News -Dept. of Energy co-sponsors Oct. 11th NOVA program:

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation ProposedUsingFunInfraredJefferson Lab Click onLaser Twinkles inPEM Thisthe Laser

  1. E-Print Network 3.0 - arterial uma nova Sample Search Results

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

    (c) Uma solucao de minimos quadrados para Ax b e Source: Dias, Esmeralda Sousa - Departamento de Matemtica, Instituto Superior Tcnico, Universidade Tcnica de...

  2. II Congresso de e justia da UFPR Novas Tecnologias para o Direito e o Poder Judicirio

    E-Print Network [OSTI]

    Paraná, Universidade Federal do

    INTERNET PROFUNDA OU "DEEP WEB". Manuel Martin Pino Estrada O presente trabalho visa mostrar à comunidade mais fácil desviar dinheiro pela chamada "internet profunda" ou "deep web" e o melhor, sem ser

  3. Late Holocene Radiocarbon Variability in Northwest Atlantic Slope Waters

    SciTech Connect (OSTI)

    Sherwood, O; Edinger, E; Guilderson, T P; Ghaleb, B; Risk, M J; Scott, D B

    2008-08-15T23:59:59.000Z

    Deep-sea gorgonian corals secrete a 2-part skeleton of calcite, derived from dissolved inorganic carbon at depth, and gorgonin, derived from recently fixed and exported particulate organic matter. Radiocarbon contents of the calcite and gorgonin provide direct measures of seawater radiocarbon at depth and in the overlying surface waters, respectively. Using specimens collected from Northwest Atlantic slope waters, we generated radiocarbon records for surface and upper intermediate water layers spanning the pre- and post bomb-{sup 14}C eras. In Labrador Slope Water (LSW), convective mixing homogenizes the pre-bomb {Delta}{sup 14}C signature (-67 {+-} 4{per_thousand}) to at least 1000 m depth. Surface water bomb-{sup 14}C signals were lagged and damped (peaking at {approx} +45{per_thousand} in the early 1980s) relative to other regions of the northwest Atlantic, and intermediate water signals were damped further. Off southwest Nova Scotia, the vertical gradient in {Delta}{sup 14}C is much stronger. In surface water, pre-bomb {Delta}{sup 14}C averaged -75 {+-} 5{per_thousand}. At 250-475 m depth, prebomb {Delta}{sup 14}C oscillated quasi-decadally between -80 and -100{per_thousand}, likely reflecting interannual variability in the presence of Labrador Slope Water vs. Warm Slope Water (WSW). Finally, subfossil corals reveal no systematic changes in vertical {Delta}{sup 14}C gradients over the last 1200 years.

  4. Direct Characterization of Airborne Particles Associated with Arsenic-rich Mine Tailings: Particle Size Mineralogy and Texture

    SciTech Connect (OSTI)

    M Corriveau; H Jamieson; M Parsons; J Campbell; A Lanzirotti

    2011-12-31T23:59:59.000Z

    Windblown and vehicle-raised dust from unvegetated mine tailings can be a human health risk. Airborne particles from As-rich abandoned Au mine tailings from Nova Scotia, Canada have been characterized in terms of particle size, As concentration, As oxidation state, mineral species and texture. Samples were collected in seven aerodynamically fractionated size ranges (0.5-16 {micro}m) using a cascade impactor deployed at three tailings fields. All three sites are used for recreational activities and off-road vehicles were racing on the tailings at two mines during sample collection. Total concentrations of As in the <8 {micro}m fraction varied from 65 to 1040 ng/m{sup 3} of air as measured by proton-induced X-ray emission (PIXE) analysis. The same samples were analysed by synchrotron-based microfocused X-ray absorption near-edge spectroscopy ({micro}XANES) and X-ray diffraction ({micro}XRD) and found to contain multiple As-bearing mineral species, including Fe-As weathering products. The As species present in the dust were similar to those observed in the near-surface tailings. The action of vehicles on the tailings surface may disaggregate material cemented with Fe arsenate and contribute additional fine-grained As-rich particles to airborne dust. Results from this study can be used to help assess the potential human health risks associated with exposure to airborne particles from mine tailings.

  5. E-Print Network 3.0 - anti-motion sickness therapy Sample Search...

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

    Therapy Dalhousie University If I am sick with flu-like symptoms (i.e., fever andor cough... School of Occupational Therapy Room 215, 5869 University Avenue Halifax, NS...

  6. M. Enamul Hossain and M. Rafiqul Islam International Journal of Engineering (IJE), Volume (3): Issue (6), January 2010 622

    E-Print Network [OSTI]

    Hossain, M. Enamul

    Dalhousie University Sexton Campus, 1360 Barrington Street, Halifax, NS B3J 2X4, Canada Abstract It is well and operations managers and puzzled scientists and engineers. In a recent book by the research group of R. Islam

  7. Valid Votes Candidate Votes Rec'd Candidate Votes Rec'd Candidate Votes Rec'd Candidate Votes Rec'd Candidate Votes Rec'd

    E-Print Network [OSTI]

    Murdoch, Duncan

    Marshall 194 7371 Glace Bay Tom MacPherson 810 Myrtle Campbell 2829 Dave Wilson 3380 Todd Pettigrew 82 7101 Debbie Hum 1084 Linda Power 3924 Diana Whalen 5030 Amanda Hester 172 Jonathan Dean 51 10261 Halifax

  8. Dynamic Visualisation in Three Physical Dimensions

    E-Print Network [OSTI]

    Rowe, Anthony; Morrison, Andrew

    2009-01-01T23:59:59.000Z

    13] NOVA, built by ETH Zurich. http://www.nova.ethz.ch/ andNOVA, developed by ETH Zurich. andrew.morrison@aho.no12], based on the ETH Zurich/Horao GmbH built NOVA system [

  9. JCDNM 2009, Volume 1, Issue 2 ISSN 1937-7975 Editor: Rafiq Islam, pp. 2008 Nova Science Publishers, Inc.

    E-Print Network [OSTI]

    Hossain, M. Enamul

    of long chains of carbon components and CH2 carbons were predominantly present ( 90 %). The line shape) showed a non-toxic shoe polish can be produced from beeswax. Corresponding author: E-mail: rafiqul is inherently non-toxic as opposed to paraffin wax that is inherently toxic, when long-term is considered

  10. Quim. Nova, Vol. 30, No. 2, 346-350, 2007 *e-mail: morgano@ital.sp.gov.br

    E-Print Network [OSTI]

    Ferreira, Mrcia M. C.

    PARCIAIS Marcelo A. Morgano* Centro de Qumica de Alimentos e Nutrio Aplicada, Instituto de Tecnologia de

  11. Novas ferramentas para analise do controle auton^omico Daniel Lucas Ferreira e Almeida (daniel.lucas@msn.com)

    E-Print Network [OSTI]

    Carvalho, João Luiz

    ´otimo do passo s ´e obtido com base no comprimento inicial das janelas (l0) (Tabela 1). Tabela 1: Espa do espa¸camento n~ao uniforme das amostras de f(x). Sinais e Pr´e-processamento Banco de dados da falsos positivos e negativos dos sinais analisados. Resultados e Discuss~ao Com base nos valores de 1 e 2

  12. In: Cyclones: Formation, Triggers and Control ISBN Editor: Kazuyoshi Oouchi and Hironori Fudeyasu, pp. 2012 Nova Science Publishers, Inc.

    E-Print Network [OSTI]

    Li, Tim

    discuss the origin of the summertime synoptic- scale wave train in the western Pacific and the energy results, focusing on the energy dispersion of a preexisting tropical cyclone and genesis efficiency of mid by a confluence zone between the monsoon westerly and the trade easterly. A meridional shear line along 150o E, 5o

  13. In: Gamma Rays ISBN: 978-1-62257-697-5 Editor: Istvan Bikit 2013 Nova Science Publishers, Inc.

    E-Print Network [OSTI]

    Homes, Christopher C.

    . Chapter 14 THE UBIQUITY OF BACKGROUND RADIATION AND THE CLINICAL UTILITY OF NATURALLY OCCURRING POTASSIUM background radiation and its abundance in the human body is reviewed. One of the naturally occurring radiation, is known to be considerable. This implies that at least one particle hit occurred to the DNA

  14. Argonne materials scientist Vilas Pol (former postdoc) was recently featured on the PBS NOVA series "Making Stuff: Cleaner," where

    E-Print Network [OSTI]

    Kemner, Ken

    innovative solutions to the grand challenges of our time: renewable and safe energy, a healthy environment-quarters of whom hold doctoral degrees. The laboratory's annual operating budget of around $670 million supports to transfer our technologies to the marketplace through licensing, joint research and many other collaborative

  15. Topics in Cosmic-Ray Astrophysics, 1999, Nova Science Publisher The PAMELA apparatus for the search of antimatter

    E-Print Network [OSTI]

    Morselli, Aldo

    of energies, the search for primordial antimatter and the study the cosmic ray fluxes over half solar cycle, Solar-physics and Earth-physics. PAMELA is an satellite-borne magnet spectrometer built by the Wi.it/infn/aldo/pamela.html. The Pamela telescope, shown in figure 1, consists of the following elements: a magnet + tracker system

  16. ASPES (2010) ISSN: 1937-7991 Volume 2, Issue 1, pp. 35 46. 2010 Nova Science Publishers, Inc.

    E-Print Network [OSTI]

    Hossain, M. Enamul

    , B3J-1Z1, Canada ABSTRACT Drilling is a necessary step for petroleum exploration and production. A parameter of principal importance in any drilling process is the "weight on bit". This is the axial force acting on the bit during the cutting process. Normally this force is relatively large and may

  17. Laurentian fan: morphology, sediments, processes, and growth pattern

    SciTech Connect (OSTI)

    Stow, D.A.V.

    1981-03-01T23:59:59.000Z

    Thick sediment accumulations in deep water provide a new target in the search for oil, and require an innovative approach to hydrocarbon exploration. The Laurentian fan is a large, deep-sea (2000 to 5000 m) fan in the western North Atlantic, and has been the major depocenter off Nova Scotia since at least the early Tertiary. The main development of the present depositional and erosional fan morphology in the past 2 to 3 m.y. was closely related to onshore glacial history. The slope above the fan has been the site of rapid sedimentation and consequent slumping. A network of tributaries on the upper fan appears to feed three main channel systens incised up to 800 m between broad asymmetric levees. These channels meander widely across the lower fan, then die out abruptly and pass into a lobate suprafan. Differences between the Laurentian fan and typical fan models result, in part, from the muddy nature of the sediment and the supply system. The channels contain thick, coarse gravels which probably grade distally into sandy lobes. Both should produce good reservoir bodies with suitable source and trapping mechanisms. Fine-grained sediments were more important in fan construction. Interbedded turbidites, contourites, and hemipelagites are present in the late Quaternary-Holocene sequence. The distribution of these sediments and, in particular, the recognition of structural sequences, textural trends, and fabric types in the fine-grained turbidites can be used to characterize particular parts of the fan environment. The development of this approach should prove useful in future hydrocarbon exploration.

  18. Genome complexity in a lean, mean photosynthetic machine

    E-Print Network [OSTI]

    Archibald, John

    , Dalhousie University, Sir Charles Tupper Medical Building, 5850 College Street, Halifax, NS, Canada B3H 1X5, invisible to the naked eye and unfathomably large in number, quietly harnessing solar en- ergy, fixing 1 m in diameter and practically invisible under the light microscope, O. tauri was detected by flow

  19. Conference Presentations and Posters July 2010 Thompson Group Dalhousie University1

    E-Print Network [OSTI]

    Dellaire, Graham

    Sulfinate and its Utility in the Asymmetric Synthesis of Chiral Pyrrole-containing Diarylsulfoxides. Uddin and Chemical Biophysics Networking Retreat, February 2009, Halifax, NS. 9. Pyrrolic Compounds: One, Two, Three. Helical and Alkali Complexes of Dipyrrins: Synthesis and Properties. Thompson, A. American Chemical

  20. Conference Presentations and Posters March 2011 Thompson Group Dalhousie University1

    E-Print Network [OSTI]

    Dellaire, Graham

    . Synthesis of an Optically Pure Sulfinate and its Utility in the Asymmetric Synthesis of Chiral Pyrrole Presentations 12. Synthesis and characterization of a series of fluorescent pyrrolyldipyrrinato tin Retreat, February 2009, Halifax, NS. 9. Pyrrolic Compounds: One, Two, Three. Thompson, A. Astra

  1. Satellite remote sensing of surface air quality Randall V. Martin a,b,*

    E-Print Network [OSTI]

    Martin, Randall

    Review Satellite remote sensing of surface air quality Randall V. Martin a,b,* a Department University, Halifax, NS, Canada B3H 3J5. Tel.: þ1 902 494 3915; fax: þ1 902 494 5191. E-mail address: randall

  2. Fluid dynamics topics in bloodstain pattern analysis: Comparative review and research opportunities

    E-Print Network [OSTI]

    Attinger, Daniel

    Review Fluid dynamics topics in bloodstain pattern analysis: Comparative review and research a Department of Mechanical Engineering, Iowa State University of Science and Technology, Ames, IA 50011, USA b Engineering & Applied Science, Dalhousie University, Halifax, NS B3H 4R2, Canada d Department of Mechanical

  3. SUST 2000.06 Humanity in the Natural World: An Introduction to Problem Based Learning

    E-Print Network [OSTI]

    Brownstone, Rob

    College of Sustainability Dalhousie University, Mona Campbell Bldg 1459 LeMarchant St. Suite 1401 Halifax Sciences Building Auditorium 2 Office hours: Wednesdays, 10:00 AM, in College of Sustainability for Fall 2011: Creating Sustainable Urban Communities Instructors Susan Tirone, PhD Associate Professor

  4. Improving fisheries co-management through ecosystem-based spatial management: The Galapagos Marine Reserve

    E-Print Network [OSTI]

    Charles, Anthony

    Febrero, Santa Cruz, Galapagos, Ecuador c Management Science/Environmental Science, Saint Mary's University, Halifax, NS, Canada B3H 3C3 a r t i c l e i n f o Article history: Received 2 May 2012 Received for ocean space, to mitigate the impact of human activities on sensitive ecological areas, and to contribute

  5. Local Bus $42.72/Month Any MBTA Bus or Trackless Trolley

    E-Print Network [OSTI]

    Fraden, Seth

    · All "Zone 1-6" services plus: · Commuter Rail Zone 7: · Attleboro · Bradford · Gloucester · Halifax · Haverhill · Littleton-495 · Rowley · South Attleboro · West Gloucester · Westborough Zone 8 $279.46/Month

  6. The Canadian Physiotherapy Association Senior's Health Division congratulates Stacey Mann from the University of Saskatchewan, this year's Student Award winner. Stacey expressed a strong interest in

    E-Print Network [OSTI]

    Saskatchewan, University of

    the University of Saskatchewan, this year's Student Award winner. Stacey expressed a strong interest in working in seniors' health care settings. Her interest is so keen that she traveled from Saskatoon to Halifax, she has already realized the reciprocal learning that occurs when working with seniors

  7. Engineering of Multi-Agent Systems to Effectuate Distributed Data Mining Activities

    E-Print Network [OSTI]

    Abidi, Syed Sibte Raza

    Engineering of Multi-Agent Systems to Effectuate Distributed Data Mining Activities Syed Zahid healthcare enterprise. When adopting this view, a set of data access and mining issues can be addressed using, Dalhousie University, Halifax B3H 1W5, CANADA Abstract The proliferation of healthcare data has resulted

  8. NETL F 451.1-1/1 Categorical Exclusion (CX) Designation Form

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

    1012009 - 1182012 Philadelphia, PA NovaThermal Energy Waste Heat Geothermal Heat Pump System 1) Corporate matters associated with NovaThermal Energy's growth and...

  9. ICF program annual report, 1988--89

    SciTech Connect (OSTI)

    Not Available

    1993-09-01T23:59:59.000Z

    This report contains discussions on the following topics: Target Physics; Nova Experiments; Nova Laser Science and Technology; Target Science and Technology; Advanced Drivers; and ICF Applications.

  10. Comportamento espectro-temporal da cana-de-acar: uma nova proposta na distribuio espacial dos pontos de controle utilizados na interpolao de

    E-Print Network [OSTI]

    Hammerton, James

    Campos - SP, Brasil {pupin, bernardo, daniel}@dsr.inpe.br 2 Universidade Federal de Viçosa - UFV Campus Universitário ­ 36570-000 - Viçosa - MG, Brasil carlos.vieira@ufv.br Abstract. The major attribute of remotely do Brasil quanto nas questões ambientais internacionais relacionadas com a redução da emissão de

  11. 1. (P) M.I. Ojovan, W.E. Lee. New Developments in Glassy Nuclear Wasteforms. Nova Science Publishers, New York, 131p. (2007).

    E-Print Network [OSTI]

    Ojovan, Michael

    and Mantle Using Self-Descending, Radiation-Heated, Probes and Acoustic Emission Monitoring. Chapter 7 in. In: G.D. Roy, S.M. Frolov and A.M. Starik (eds.), Combustion and Atmospheric Pollution, Moscow, Torus

  12. A NOVA ESCOLA DE CHICAGO E AS MODALIDADES DE REGULAO: Tendncias do Law and Economics e aplicaes para o direito brasileiro

    E-Print Network [OSTI]

    Filho, Edgar Gaston Jacobs Flores

    2007-01-01T23:59:59.000Z

    base da Escola de Chicago na rea interdisciplinar entre sociologia e arquitetura. Utilizando- se de dados

  13. FEI Nova NanoSEM 650 8.43 Marvell NanoLab Member login Lab Manual Contents MercuryWeb Berkeley Microlab

    E-Print Network [OSTI]

    Healy, Kevin Edward

    that is used to conduct imaging operations and controls on a sample. 6.0 Safety 6.1 Tool Qualification Policy 6

  14. A NOVA ESCOLA DE CHICAGO E AS MODALIDADES DE REGULAO: Tendncias do Law and Economics e aplicaes para o direito brasileiro

    E-Print Network [OSTI]

    Filho, Edgar Gaston Jacobs Flores

    2007-01-01T23:59:59.000Z

    dos cintos de segurana: O governo poderia querer aumentar ose da idia de que o governo, como uma fora exgena,recolhidos ou tratados pelo Governo e Administrao Pblica,

  15. Gamma Ray Burst engine activity within the quark nova scenario: Prompt emission, X-ray Plateau, and sharp drop-off

    E-Print Network [OSTI]

    Jan Staff; Brian Niebergal; Rachid Ouyed

    2007-11-19T23:59:59.000Z

    We present a three-stage model for a long GRB inner engine to explain the prompt gamma ray emission, and interpret recent Swift satellite observations of early X-ray afterglow plateaus followed by a sharp drop off or a shallow power law decay. The three stages involves a neutron star phase, a quark star (QS) and a black hole phase as described in Staff et al. (2007). We find that the QS stage allows for more energy to be extracted from neutron star to QS conversion as well as from ensuing accretion onto the QS. The QS accretion phase naturally extends the engine activity and can account for both the prompt emission and irregular early X-ray afterglow activity. Following the accretion phase, the QS can spin-down by emission of a baryon-free outflow. The magnetar-like magnetic field strengths resulting from the NS to QS transition provide enough spin-down energy, for the correct amount of time, to account for the plateau in the X-ray afterglow. In our model, a sharp drop-off following the plateau occurs when the QS collapses to a BH during the spin-down, thus shutting-off the secondary outflow. We applied our model to GRB 070110 and GRB 060607A and found that we can consistently account for the energetics and duration during the prompt and plateau phases.

  16. In: Journal of Characterization and Development of Novel Materials ISSN: 1937-7975 Volume 1, Issue 4, pp. 285 296 2010 Nova Science Publishers, Inc.

    E-Print Network [OSTI]

    Hossain, M. Enamul

    of toxic drilling fluids. This paper proposes an alternative method that is waterjet drilling WATERJET DRILLING M. Enamul Hossain1* , Chefi Ketata2 and M. Rafiqul Islam2 1 Department of Petroleum Conventional rotary drilling has been the main technique used for drilling in the oil and gas industry. However

  17. Nova Science Publishers, Inc. Hauppauge, New York ISSN 1933-0324 Journal of Nature Science and Sustainable Technology, Volume 2, Issue 3, 2007

    E-Print Network [OSTI]

    Hossain, M. Enamul

    . This process not only lowers the steam generation cost but also reduces the amount of air pollutants released environmental pollution. The temperature distribution is very important in thermal oil recovery. Increasing

  18. In: Forest Decline: Causes and Impacts ISBN 978-1-61470-002-9 Editor: Joshua A. Jenkins, pp. 2011 Nova Science Publishers, Inc.

    E-Print Network [OSTI]

    Herrera, Carlos M.

    the response of several tree species from the Mediterranean Basin to recent climate change. We summarize, distribution shifts in Mediterranean mountains attribute the majority of observed changes to either climate-growth and regional climatic trends in four tree species from western Mediterranean Mountains: Silver fir (Abies alba

  19. In: Computer Physics Research Trends ISBN: 978-160021-595-7 Editor: Silvan J. Bianco, pp. 119-150 2007 Nova Science Publishers, Inc.

    E-Print Network [OSTI]

    Yu, K.N.

    in the bare mode are described. The possibility to perform long-term measurements of radon progeny.e., enclosed in the so- called diffusion chambers. Here, the effects of radon progeny deposition onto the inner

  20. In: Nuclear Track Detectors: Design, Methods and Applications ISBN: 978-1-60876-826-4 Editor: Maksim Sidorov and Oleg Ivanov 2009 Nova Science Publishers, Inc.

    E-Print Network [OSTI]

    Yu, K.N.

    OF RADON PROGENY CONCENTRATIONS WITH SOLID STATE NUCLEAR TRACK DETECTORS K.N. Yu and D. Nikezic Department of the concentrations of radon progeny, or the equilibrium factor F, are still being actively explored. A brief review of existing methods for long-term measurements of radon progeny concentrations or F with SSNTDs will first

  1. A NOVA ESCOLA DE CHICAGO E AS MODALIDADES DE REGULAO: Tendncias do Law and Economics e aplicaes para o direito brasileiro

    E-Print Network [OSTI]

    Filho, Edgar Gaston Jacobs Flores

    2007-01-01T23:59:59.000Z

    sua aplicao no Brasil, em prol de uma sociedade melhor.6. B IBLIOGRAFIA BRASIL. Cdigo Civil. So Paulo: Saraiva,da Repblica Federativa do Brasil. Braslia: Senado,

  2. In: Weeds: Management, Economic Impacts and Biology ISBN: 978-1-60741-010-2 Editor: Rudolph V. Kingely Nova Science Publishers, Inc.

    E-Print Network [OSTI]

    and soil quality, recreational values, and wildlife habitat. Traditionally, weed management in natural because most weed management tools originated in agricultural systems where removal of the weed commonly of natural systems and the limitations of available management tools. To improve weed management in natural

  3. Mercury Information Clearinghouse

    SciTech Connect (OSTI)

    Chad A. Wocken; Michael J. Holmes; Dennis L. Laudal; Debra F. Pflughoeft-Hassett; Greg F. Weber; Nicholas V. C. Ralston; Stanley J. Miller; Grant E. Dunham; Edwin S. Olson; Laura J. Raymond; John H. Pavlish; Everett A. Sondreal; Steven A. Benson

    2006-03-31T23:59:59.000Z

    The Canadian Electricity Association (CEA) identified a need and contracted the Energy & Environmental Research Center (EERC) to create and maintain an information clearinghouse on global research and development activities related to mercury emissions from coal-fired electric utilities. With the support of CEA, the Center for Air Toxic Metals{reg_sign} (CATM{reg_sign}) Affiliates, and the U.S. Department of Energy (DOE), the EERC developed comprehensive quarterly information updates that provide a detailed assessment of developments in the various areas of mercury monitoring, control, policy, and research. A total of eight topical reports were completed and are summarized and updated in this final CEA quarterly report. The original quarterly reports can be viewed at the CEA Web site (www.ceamercuryprogram.ca). In addition to a comprehensive update of previous mercury-related topics, a review of results from the CEA Mercury Program is provided. Members of Canada's coal-fired electricity generation sector (ATCO Power, EPCOR, Manitoba Hydro, New Brunswick Power, Nova Scotia Power Inc., Ontario Power Generation, SaskPower, and TransAlta) and CEA, have compiled an extensive database of information from stack-, coal-, and ash-sampling activities. Data from this effort are also available at the CEA Web site and have provided critical information for establishing and reviewing a mercury standard for Canada that is protective of environment and public health and is cost-effective. Specific goals outlined for the CEA mercury program included the following: (1) Improve emission inventories and develop management options through an intensive 2-year coal-, ash-, and stack-sampling program; (2) Promote effective stack testing through the development of guidance material and the support of on-site training on the Ontario Hydro method for employees, government representatives, and contractors on an as-needed basis; (3) Strengthen laboratory analytical capabilities through analysis and quality assurance programs; and (4) Create and maintain an information clearinghouse to ensure that all parties can keep informed on global mercury research and development activities.

  4. A study of algal biomass potential in selected Canadian regions.

    SciTech Connect (OSTI)

    Passell, Howard David; Roach, Jesse Dillon; Klise, Geoffrey T.

    2011-11-01T23:59:59.000Z

    A dynamic assessment model has been developed for evaluating the potential algal biomass and extracted biocrude productivity and costs, using nutrient and water resources available from waste streams in four regions of Canada (western British Columbia, Alberta oil fields, southern Ontario, and Nova Scotia). The purpose of this model is to help identify optimal locations in Canada for algae cultivation and biofuel production. The model uses spatially referenced data across the four regions for nitrogen and phosphorous loads in municipal wastewaters, and CO{sub 2} in exhaust streams from a variety of large industrial sources. Other data inputs include land cover, and solar insolation. Model users can develop estimates of resource potential by manipulating model assumptions in a graphic user interface, and updated results are viewed in real time. Resource potential by location can be viewed in terms of biomass production potential, potential CO{sub 2} fixed, biocrude production potential, and area required. The cost of producing algal biomass can be estimated using an approximation of the distance to move CO{sub 2} and water to the desired land parcel and an estimation of capital and operating costs for a theoretical open pond facility. Preliminary results suggest that in most cases, the CO{sub 2} resource is plentiful compared to other necessary nutrients (especially nitrogen), and that siting and prospects for successful large-scale algae cultivation efforts in Canada will be driven by availability of those other nutrients and the efficiency with which they can be used and re-used. Cost curves based on optimal possible siting of an open pond system are shown. The cost of energy for maintaining optimal growth temperatures is not considered in this effort, and additional research in this area, which has not been well studied at these latitudes, will be important in refining the costs of algal biomass production. The model will be used by NRC-IMB Canada to identify promising locations for both demonstration and pilot-scale algal cultivation projects, including the production potential of using wastewater, and potential land use considerations.

  5. Supporting Information For Calcium-dependent heme structure in the reduced forms of the bacterial

    E-Print Network [OSTI]

    Shelnutt, John A.

    Cincias e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal Nanomaterials Sciences

  6. Harvard Medical School Students with Semester Passes

    E-Print Network [OSTI]

    Goodrich, Lisa V.

    ·Lawrence·Lowell·Manchester·Mansfield·SouthActon ·Southborough Zone 7 $258.99/Month · All"Zone1-6"servicesplus: · CommuterRailZone7: ·Attleboro·Bradford·Gloucester·Halifax·Haverhill·Littleton-495 ·Rowley·SouthAttleboro·WestGloucester·Westborough Zone 8 $279.46/Month · All"Zone1-7"servicesplus

  7. Tufts University, Medford Students with Semester Passes

    E-Print Network [OSTI]

    Dennett, Daniel

    ·Lawrence·Lowell·Manchester·Mansfield·SouthActon ·Southborough Zone 7 $258.99/Month · All"Zone1-6"servicesplus: · CommuterRailZone7: ·Attleboro·Bradford·Gloucester·Halifax·Haverhill·Littleton-495 ·Rowley·SouthAttleboro·WestGloucester·Westborough Zone 8 $279.46/Month · All"Zone1-7"servicesplus

  8. Harvard Medical School Students with Semester Passes

    E-Print Network [OSTI]

    Paulsson, Johan

    ·Lawrence·Lowell·Manchester·Mansfield·SouthActon ·Southborough Zone 7 $272.34/Month · All"Zone1-6"servicesplus: · CommuterRailZone7: ·Attleboro·Bradford·Gloucester·Halifax·Haverhill·Littleton-495 ·Rowley·SouthAttleboro·WestGloucester·Westborough Zone 8 $293.70/Month · All"Zone1-7"servicesplus

  9. Tufts University, Medford Students with Semester Passes

    E-Print Network [OSTI]

    Dennett, Daniel

    ·Lawrence·Lowell·Manchester·Mansfield·SouthActon ·Southborough Zone 7 $272.34/Month · All"Zone1-6"servicesplus: · CommuterRailZone7: ·Attleboro·Bradford·Gloucester·Halifax·Haverhill·Littleton-495 ·Rowley·SouthAttleboro·WestGloucester·Westborough Zone 8 $293.70/Month · All"Zone1-7"servicesplus

  10. Hall County, Georgia: 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 on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia: Energy Resources Jump to: navigation,Ohio:Greer County is a countyon State HighwaysHalfwayHalifax ElectricisHall

  11. Hall County, Nebraska: 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 on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia: Energy Resources Jump to: navigation,Ohio:Greer County is a countyon State HighwaysHalfwayHalifax

  12. Hall County, Texas: 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 on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia: Energy Resources Jump to: navigation,Ohio:Greer County is a countyon State HighwaysHalfwayHalifaxTexas. Its FIPS

  13. Halla Electric Co 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 on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia: Energy Resources Jump to: navigation,Ohio:Greer County is a countyon State HighwaysHalfwayHalifaxTexas. Its

  14. Hallandale Beach, Florida: 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 on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia: Energy Resources Jump to: navigation,Ohio:Greer County is a countyon State HighwaysHalfwayHalifaxTexas.

  15. Hallwood, Virginia: 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 on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia: Energy Resources Jump to: navigation,Ohio:Greer County is a countyon State HighwaysHalfwayHalifaxTexas.Hallwood,

  16. Fermilab Today

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

    Milestone NOvA near detector complete A PPD technician installs the last avalanche photodiode, better known as an APD, on the NOvA near detector. Photo: Ting Miao, PPD On...

  17. Using Cytochrome c3 To Make Selenium A. Abdelouas,

    E-Print Network [OSTI]

    Shelnutt, John A.

    mica Fina e Biotecnologia, Departamento de Quimica, Faculdade de Cie^ncias e Tecnologia, Universidade Nova- tional Laboratories. | Departamento de Quimica, Faculdade de Cie^ncias e Tecnologia, Universidade Nova

  18. file:///Users/salvina/Desktop/Dez%202/publico5Dez.htm[11/12/12 11:37:48] ARTIGO INTERNET

    E-Print Network [OSTI]

    Instituto de Sistemas e Robotica

    a deciso de fuso, competir ao Governo aprovar o decreto-lei com vista instalao da nova universidade Serra espera que o Governo seja capaz de responder ao exemplo, aumentando a autonomia da nova Governo. #12;

  19. Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep Oct

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

    DOE S&T Program Review Project Reviews (IPPM) DOE CD-1 Review of LBNE DOE IPR Review of Mu2e DOE IPR Review of NOvA DOE IPR Review of NOvA DOE IPR Mini...

  20. Bibliographia Nudibranchia, second edition

    E-Print Network [OSTI]

    McDonald, Gary R

    2009-01-01T23:59:59.000Z

    G V ILLANI . 1994. Biologia y quimica: un extraordinarioDoris aff. verrucosa. Quimica Nova 23(5):594-599. [Doriseliora, da costa do Brasil. Quimica Nova 28(2):192-198. [

  1. Bibliographia Nudibranchia

    E-Print Network [OSTI]

    McDonald, Gary R

    2006-01-01T23:59:59.000Z

    G V ILLANI . 1994. Biologia y quimica: un extraordinarioDoris aff. verrucosa. Quimica Nova 23(5):594-599. G RANATO ,eliora, da costa do Brasil. Quimica Nova 28(2):192-198. G

  2. Comments for the Environmental Assessment of the proposed

    E-Print Network [OSTI]

    Hughes, Larry

    Storage Facility Larry Hughes1 Energy Research Group Department of Electrical and Computer Engineering in a number of ways, including both above- and below-ground facilities--a common below-ground technique Scotia to identify a salt formation suitable for natural gas storage. Alton Natural Gas Storage L

  3. DELE 2014DELE 2014 EXAM CENTRES

    E-Print Network [OSTI]

    Leclercq, Remi

    on a global scale... Study and work in Spain and Latin America... Become o cially accredited as pro cient SCOTIA Dalhousie University Department of Spanish and Latin American Studies Marion McCain Arts to be renewed. What is the DELE? e Diplomas in Spanish as a Foreign Language (DELE), granted by the Instituto

  4. SUPERNOVAE AS ASTROPHYSICAL OBJECTS Bruno Leibundgut 1

    E-Print Network [OSTI]

    Leibundgut, Bruno

    ). The 'stella nova' in Cassiopeia, which appeared in November 1572, was ob- served by the young Tycho Brahe

  5. Spectroscopic and Electronic Structure Studies of the 4-Sulfide Bridged Tetranuclear CuZ Cluster in N2O

    E-Print Network [OSTI]

    Chen, Peng

    Tecnologia, UniVersidade NoVa de Lisboa, 2825-114 Caparica, Portugal Received April 8, 2002 Abstract

  6. Chelatases: distort to select? Salam Al-Karadaghi1

    E-Print Network [OSTI]

    Shelnutt, John A.

    Biotecnologia, Departamento de Quimica, Faculdade de Cie^ncias e Tecnologia, Universidade Nova de Lisboa, 2829

  7. Supplementary Information Morphological Families of Self-Assembled Porphyrin Structures and

    E-Print Network [OSTI]

    Shelnutt, John A.

    , Faculdade de Cincias e Tecnologia,FCT, Universidade Nova de Lisboa and CEMOP-UNINOVA, 2829-516 Caparica

  8. U + Profesionais P13 Diego Ferreiro

    E-Print Network [OSTI]

    Fraguela, Basilio B.

    , incluso para una universidade nova. Por fortuna as universidades, acaso pola ilusión de eterna mocidade

  9. Toward multifunctional nanoparticle-based therapeutics

    E-Print Network [OSTI]

    Derfus, Austin Matthew

    2006-01-01T23:59:59.000Z

    Nova 3) was used with a remote heating station and custom-We harnessed this remote heating phenomenon to remotely

  10. Solid state laser technology for inertial confinement fusion: A collection of articles from ''Energy and Technology Review''

    SciTech Connect (OSTI)

    Not Available

    1988-06-01T23:59:59.000Z

    This paper contains reprinted articles that record several milestones in laser research at LLNL. ''Neodymium-Glass Laser Research and Development at LLNL'' recounts the history of the Laser Program and our work on neodymium-glass lasers. ''Nova Laser Technology'' describes the capabilities of the Nova laser and some of its uses. ''Building Nova: Industry Relations and Technology Transfer'' illustrates the Laboratory's commitment to work with US industry in technology development. ''Managing the Nova Laser Project'' details the organization and close monitoring of costs and schedules during the construction of the Nova laser facility. The article ''Optical Coatings by the Sol-Gel Process,'' describes our chemical process for making the damage-resistant, antireflective silica coatings used on the Nova laser glass. The technical challenges in designing and fabricating the KDP crystal arrays used to convert the light wave frequency of the Nova lasers are reported in ''Frequency Conversion of the Nova Laser.'' Two articles, ''Eliminating Platinum Inclusions in Laser Glass'' and ''Detecting Microscopic Inclusions in Optical Glass,'' describe how we dealt with the problem of damaging metal inclusions in the Nova laser glass. The last article reprinted here, ''Auxilliary Target Chamber for Nova,'' discusses the diversion of two of Nova's ten beamlines into a secondary chamber for the purpose of increasing our capacity for experimentation.

  11. CCD Observing Manual 49 Bay State Road

    E-Print Network [OSTI]

    Ellingson, Steven W.

    Stars 5.6. Supernovae/Novae Patrols 5.7. Designing Your Own: Using AAVSO VSX 6.0 Observing Techniques 6

  12. --No Title--

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

    to study nuclear reactions occurring in exotic stellar explosions such as novae, supernovae, and X-ray bursts," said Michael Smith of the Physics Division. "These incredibly...

  13. Financial reporting and inventory disclosure in the extractive industry.

    E-Print Network [OSTI]

    Percival, Daphne Susana

    2012-01-01T23:59:59.000Z

    ??A Work Project, presented as part of the requirements for the Award of a Masters Degree in Finance from the NOVA School of Business (more)

  14. aterro metropolitano centro: Topics by E-print Network

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

    uma nova tcnica de registro hologrco autoestabilizado que (more) Renata Montenegro Pereira 2010-01-01 4 Centro Clnico del NIH Manual del Paciente Biology and Medicine...

  15. assistenciais distintos estudo: Topics by E-print Network

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

    uma nova tcnica de registro hologrco autoestabilizado que (more) Renata Montenegro Pereira 2010-01-01 5 Criminalidade organizada em Portugal : um estudo exploratrio....

  16. E-Print Network 3.0 - analysis estudo das Sample Search Results

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

    mag- netica e com as novas etapas de estudo. Alem disso, os dados... an- cia magnetica e a sua aplicacao a reconstrucao em imageamento paralelo. Ele ......

  17. Design and performance evaluation of group communication in parallel and distributed systems

    E-Print Network [OSTI]

    Al-Dubai, A.Y.; Ould-Khaoua, M.

    Al-Dubai,A.Y. Ould-Khaoua,M. International Journal of High Performance Computing and Networking (IJHPCN), to appear Nova Science Publishers

  18. Calcium-Dependent Conformation of a Heme and Fingerprint Peptide of the Diheme Cytochrome c Peroxidase from Paracoccus pantotrophus

    E-Print Network [OSTI]

    Shelnutt, John A.

    mica, Faculdade de Cie^ncias e Tecnologia, UniVersidade NoVa de Lisboa, 2825 Monte de Caparica, Portugal

  19. Binding of Protoporphyrin IX and Metal Derivatives to the Active Site of Wild-Type Mouse Ferrochelatase at Low Porphyrin-to-Protein Ratios

    E-Print Network [OSTI]

    Shelnutt, John A.

    Biotecnologia, Departamento de Quimica, Faculdade de Cie^ncias e Tecnologia, UniVersidade NoVa de Lisboa, 2829

  20. The Structural Origin of Nonplanar Heme Distortions in Tetraheme Ferricytochromes c3

    E-Print Network [OSTI]

    Shelnutt, John A.

    Tecnologia, UniVersidade NoVa de Lisboa, 2825 Monte de Caparica, Portugal, and Fakultat fur Biologie, Uni

  1. The Conserved Active-Site Loop Residues of Ferrochelatase Induce Porphyrin Conformational Changes Necessary for Catalysis

    E-Print Network [OSTI]

    Shelnutt, John A.

    , Departamento de Quimica, Faculdade de Cie^ncias e Tecnologia, UniVersidade NoVa de Lisboa, 2829-516 Caparica

  2. Metodologia, Sistema de Codificao e Ferramenta de software para Modelagem de Mveis Modulados.

    E-Print Network [OSTI]

    Viviane Maria Llis Carvalho

    2010-01-01T23:59:59.000Z

    ??No desenvolvimento deste trabalho foi investigado como novas tecnologias podem auxiliar nos processos de modelagem e fabricao de mveis modulados na indstria moveleira do estado (more)

  3. Discovery of a Supernova Explosion at Half the Age of the Universe and its Cosmological Implications

    E-Print Network [OSTI]

    Perlmutter, S.

    2010-01-01T23:59:59.000Z

    and Bounds on qo. in Thermonuclear Supernovae (eds P. Ruiz-novae as clocks. in Thermonuclear Supernovae (eds P. Ruiz-distance indicators. in Thermonuclear Supernovae (eds P.

  4. anual da sociedade: Topics by E-print Network

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

    equipamento docente a Nicaragua Achdego en Biolox-a dunha nova especie para a ciencia Repsol cede internacional sobre o xenoma Premio da Sociedade de Biotica para unha...

  5. Science and technology review, September 1997

    SciTech Connect (OSTI)

    Upadhye, R.

    1997-09-01T23:59:59.000Z

    This month`s issue contains articles entitled Nova Laser Experiments and Stockpile Stewardship; Sharing the Challenges of Non- proliferation; and Taming Explosives for Training.

  6. E-Print Network 3.0 - algas pardas marinas Sample Search Results

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

    Cladophora Dreissenid (zebra and quagga) mussels ... Source: Toledo, University of - Lake Erie Center Collection: Geosciences ; Environmental Sciences and Ecology 52 Nova...

  7. B. The Multi-objective Genetic Algorithm - Optimization Online

    E-Print Network [OSTI]

    Isaac Siwale

    2013-09-20T23:59:59.000Z

    Optimization in Polymer Processing (pp. 29-57). Nova, Hauppauge (2009). 15. Jrnsten, K. O.: A method to determine oligopolistic market equilibra based on a...

  8. National Oceanic and Atmospheric Administration US Department of Commerce

    E-Print Network [OSTI]

    . Quimica Nova 21(1):73-77. http://dx.doi.org/10.1590/S0100-40421998000100012 Hamilton EI. 1998. Marine

  9. Visualizing lateral anisotropy in modern carbonates

    E-Print Network [OSTI]

    Purkis, Sam

    ; purkis@nova.edu Sam Purkis' research interests are in applied sedimentology, petroleum geology sedimentology concepts to improve geostatistical reservoir models. Vlaswinkel's experience includes seismic

  10. verso impressa ISSN 0101-7438 / verso online ISSN 1678-5142 Pesquisa Operacional, v.28, n.3, p.423-450, Setembro a Dezembro de 2008 423

    E-Print Network [OSTI]

    Clark, Alistair

    -se em constante busca por novas tecnologias, aperfeiçoamento dos sistemas de produção e otimização da

  11. Uma Abordagem ATSP para o Problema de Dimensionamento e Sequenciamento de Lotes na Indstria de Nutrio Animal

    E-Print Network [OSTI]

    Clark, Alistair

    setor encontram-se em constante busca por novas tecnologias, aperfeiçoamento dos sistemas de produção e

  12. Jim Douglas's Papers

    E-Print Network [OSTI]

    Huntingdon: Nova Science Publishers, 7 (2001) 67-74. opersplit.pdf; (with A. M. Spagnuolo) Parameter estimates for high-level nuclear transport in fractured...

  13. Jim Douglas: Publications

    E-Print Network [OSTI]

    The approximation of nuclear contaminant transport in porous media. Comput. Appl. Math., 21(2):409-428, 2002. Special issue on multi-scale science (Nova...

  14. NETL F 451.1-1/1 Categorical Exclusion (CX) Designation Form

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

    1012009 - 1182012 Philadelphia, PA NovaThermal Energy Waste Heat Geothermal Heat Pump System Testing & assessment: 1) Field testing - testing of equipment, heat pump and...

  15. CX-007103: Categorical Exclusion Determination | Department of...

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

    Categorical Exclusion Determination NovaThermal Energy Waste Heat Geothermal Heat Pump System CX(s) Applied: A1, A11 Date: 10132011 Location(s): Philadelphia,...

  16. CX-007100: Categorical Exclusion Determination | Department of...

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

    Categorical Exclusion Determination NovaThermal Energy Waste Heat Geothermal Heat Pump System CX(s) Applied: A9, A11 Date: 10132011 Location(s): Philadelphia,...

  17. NETL F 451.1-1/1 Categorical Exclusion (CX) Designation Form

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

    1012009 - 1182012 Philadelphia, PA NovaThermal Energy Waste Heat Geothermal Heat Pump System Perform field testing, data collection and analysis of smallest unit of...

  18. NETL F 451.1-1/1 Categorical Exclusion (CX) Designation Form

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

    1012009 - 1182012 Philadelphia, PA NovaThermal Energy Waste Heat Geothermal Heat Pump System Testing & assessment: 1) Data collection and analysis; 3) Assessment of fluid...

  19. Sntese de Fischer-Tropsch sobre perovskitas LayCu0,4Fe0,6O3.

    E-Print Network [OSTI]

    Jos Roberto de Souza

    2010-01-01T23:59:59.000Z

    ??A produo atual de 52 milhes mdia-1 de gs natural e os grandes projetos para esta expanso vem estabelecendo novas fronteiras para a indstria nacional (more)

  20. NETL F 451.1-1/1 Categorical Exclusion (CX) Designation Form

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

    2012 Philadelphia, PA NovaThermal Energy Waste Heat Geothermal Heat Pump System 1) Mechanical engineering design for system installation; 2) Demonstrate operating requirements...

  1. Sandia National Laboratories: Modeling

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

    a model that can be used ... Sandian Mark Boslough Featured on NOVA Episode about Chelyabinsk Meteor On November 20, 2013, in Computational Modeling & Simulation, Modeling,...

  2. Sandia National Laboratories: Modeling

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

    Mark Boslough Featured in NOVA Special about the Chelyabinsk Meteor On April 3, 2013, in Capabilities, Computational Modeling & Simulation, Modeling, Modeling, Modeling & Analysis,...

  3. E-Print Network 3.0 - affect estrogen sorption Sample Search...

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

    and Ecology ; Environmental Management and Restoration Technologies 3 In: Aquatic Ecosystem Research Trends ISBN 978-1-60692-772-4 Editor: George H. Nairne, pp. 2009 Nova...

  4. History

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

    convert infrared light to ultraviolet. Nova experiments provided confidence that a NIF-size laser could achieve thermonuclear ignition in a laboratory. Photo Number: NIF-1109-17878...

  5. E-Print Network 3.0 - abordagem sistematica para Sample Search...

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

    e Sequenciamento de Lotes na Indstria de... dimenso real. Desta forma, o objetivo neste trabalho estudar uma nova abordagem para soluo do problema... realizado estudos...

  6. E-Print Network 3.0 - abordagem tecnologica para Sample Search...

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

    e Sequenciamento de Lotes na Indstria de... dimenso real. Desta forma, o objetivo neste trabalho estudar uma nova abordagem para soluo do problema... realizado estudos...

  7. E-Print Network 3.0 - abordagem intervalar para Sample Search...

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

    e Sequenciamento de Lotes na Indstria de... dimenso real. Desta forma, o objetivo neste trabalho estudar uma nova abordagem para soluo do problema... realizado estudos...

  8. E-Print Network 3.0 - abordagem fuzzy para Sample Search Results

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

    e Sequenciamento de Lotes na Indstria de... dimenso real. Desta forma, o objetivo neste trabalho estudar uma nova abordagem para soluo do problema... realizado estudos...

  9. E-Print Network 3.0 - abordagem automatica aplicada Sample Search...

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

    Computao Summary: as linhas de pesquisa existentes na area de sintonia automatica. Neste trabalho temos uma nova abordagem... Informatica Aplicada - Universidade de...

  10. E-Print Network 3.0 - ayahuasca uma abordagem Sample Search Results

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

    ATSP-Peridico (Assimetric Travelling... dimenso real. Desta forma, o objetivo neste trabalho estudar uma nova ... Source: Clark, Alistair - Faculty of Computing,...

  11. E-Print Network 3.0 - artesanal tipo telita Sample Search Results

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

    Biotemas, 19 (4), dezembro de 2006 Novas ocorrncias de corais azooxantelados no sul do Brasil Summary: Brasil Captura incidental de tartarugas marinhas na pesca artesanal da Ilha...

  12. 1

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

    enabled serendipitous discoveries of remarkable natural phenomena such as cosmic gamma-ray bursts, X-ray novae and solar wind composition. Modern space-based verification systems...

  13. A golden anniversary for space-based treaty verification

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

    enabled serendipitous discoveries of remarkable natural phenomena such as cosmic gamma-ray bursts, X-ray novae and solar wind composition. Modern space-based verification systems...

  14. Photo Gallery

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

    to ultraviolet. Nova experiments provided confidence that a NIF-size laser could achieve thermonuclear ignition in a laboratory.

  15. E-Print Network 3.0 - antitumorais inibidores da Sample Search...

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

    de Caldas - MG, 26 a 29 de maio de... ) Ana Maria da Costa Ferreira (IQUSP) caro de Sousa Moreira (UFC) Antonio Slvio Mangrich (UFPR... ) (Cassino, Anfiteatro) "Novas...

  16. When Stars Blow Up What Stars Explode?

    E-Print Network [OSTI]

    Walter, Frederick M.

    #12;GK Per = Nova Per 1901 #12;Novae Thermonuclear detonations on a white dwarf ·Hydrogen accumulates the temperature reaches a few MK, fusion begins ·Degenerate fusion is a runaway. ·All the H fuses to He

  17. The Climate Change Action Pack An interactive teaching supplement designed to

    E-Print Network [OSTI]

    Gunawardena, Arunika

    #12;The Climate Change Action Pack An interactive teaching supplement designed to: · Increase the understanding among young Nova Scotians and educators of the science and issues of climate change · Equip Nova at home and in their future workplaces. #12;Climate Change Action Pack printed Mar. 2002 TABLE OF CONTENTS

  18. White Dwarfs in Binary Systems A white dwarf orbiting another star can become active

    E-Print Network [OSTI]

    Barnes, Joshua Edward

    White Dwarfs in Binary Systems A white dwarf orbiting another star can become active when the other becomes incandescent. #12;H and He from the companion build up on the white dwarf's surface. Classical. Explosions from White Dwarf Star RS Oph #12;Classical Novae: RS Ophiuci Recurrent Nova RS Ophiuci Explosions

  19. Fusion and Plasma Physics are at the Core of Nature's Most Powerful Self-Driven Systems

    E-Print Network [OSTI]

    -D DIII-D JET FT ITER Ignitor, CIT, FIRE TFTR OmegaU direct drive Nova indirect drive Nova direct drive Laser D-T #12;Comparison of Typical Plasma Parameters for Inertial and Magnetic Fusion Inertial Magnetic is Confinement a Challenge for Magnetic Fusion? A D-T reactor at a fuel density of 1020 m-3 requires E ~ 1 second

  20. Fusion and Plasma Physics are at the Core of Nature's Most Powerful Self-Driven Systems

    E-Print Network [OSTI]

    drive Nova indirect drive Nova direct drive Laser D-T #12;Comparison of Typical Plasma Parameters Density Magnetic Higher Density Magnetic DIII-D DIII-D JET FT ITER Ignitor, CIT, FIRE TFTR OmegaU direct 2 radius (m) 10 -4 1 #12;Why is Confinement a Challenge for Magnetic Fusion? A D-T reactor at a fuel

  1. Inertial confinement fusion quarterly report, October-December 1996

    SciTech Connect (OSTI)

    Hammer, J.

    1997-01-01T23:59:59.000Z

    The articles in this issue report progress on: Supernova Hydrodynamics Experiments on the Nova Laser; Characterization of Laser-Driven Shock Waves Using Interferometry; Absolute Equation of State Measurements of Compressed Liquid Deuterium Using Nova; Low-Density-Foam Shells; Tetrahedral Hohlraums; The Rosseland Mean Opacity of a Composite Material at High Temperatures.

  2. 10. Serveis a la comunitat universitria 10.1. Serveis generals

    E-Print Network [OSTI]

    Oro, Daniel

    següents: INFRAESTRUCTURA Servidors i software intermediari -- S'han provat dues noves línies d'arquitectura). -- S'ha implementat una nova arquitectura de servidors i software de base per a la UIB Digital que.9.5, desenvolupament d'un sistema de quotes de disc i proves de nova arquitectura per a alta disponibilitat

  3. An Aerosol Condensation Model for Sulfur Trioxide

    SciTech Connect (OSTI)

    Grant, K E

    2008-02-07T23:59:59.000Z

    This document describes a model for condensation of sulfuric acid aerosol given an initial concentration and/or source of gaseous sulfur trioxide (e.g. fuming from oleum). The model includes the thermochemical effects on aerosol condensation and air parcel buoyancy. Condensation is assumed to occur heterogeneously onto a preexisting background aerosol distribution. The model development is both a revisiting of research initially presented at the Fall 2001 American Geophysical Union Meeting [1] and a further extension to provide new capabilities for current atmospheric dispersion modeling efforts [2]. Sulfuric acid is one of the most widely used of all industrial chemicals. In 1992, world consumption of sulfuric acid was 145 million metric tons, with 42.4 Mt (mega-tons) consumed in the United States [10]. In 2001, of 37.5 Mt consumed in the U.S., 74% went into producing phosphate fertilizers [11]. Another significant use is in mining industries. Lawuyi and Fingas [7] estimate that, in 1996, 68% of use was for fertilizers and 5.8% was for mining. They note that H{sub 2}SO{sub 4} use has been and should continue to be very stable. In the United States, the elimination of MTBE (methyl tertiary-butyl ether) and the use of ethanol for gasoline production are further increasing the demand for petroleum alkylate. Alkylate producers have a choice of either a hydrofluoric acid or sulfuric acid process. Both processes are widely used today. Concerns, however, over the safety or potential regulation of hydrofluoric acid are likely to result in most of the growth being for the sulfuric acid process, further increasing demand [11]. The implication of sulfuric acid being a pervasive industrial chemical is that transport is also pervasive. Often, this is in the form of oleum tankers, having around 30% free sulfur trioxide. Although sulfuric acid itself is not a volatile substance, fuming sulfuric acid (referred to as oleum) is [7], the volatile product being sulfur trioxide. Sulfate aerosols and mist may form in the atmosphere on tank rupture. From chemical spill data from 1990-1996, Lawuyi02 and Fingas [7] prioritize sulfuric acid as sixth most serious. During this period, they note 155 spills totaling 13 Mt, out of a supply volume of 3700 Mt. Lawuyi and Fingas [7] summarize information on three major sulfuric acid spills. On 12 February 1984, 93 tons of sulfuric acid were spilled when 14 railroad cars derailed near MacTier, Parry Sound, Ontario. On 13 December 1978, 51 railroad cars derailed near Springhill, Nova Scotia. One car, containing 93% sulfuric acid, ruptured, spilling nearly its entire contents. In July 1993, 20 to 50 tons of fuming sulfuric acid spilled at the General Chemical Corp. plant in Richmond, California, a major industrial center near San Francisco. The release occurred when oleum was being loaded into a nonfuming acid railroad tank car that contained only a rupture disk as a safety device. The tank car was overheated and this rupture disk blew. The resulting cloud of sulfuric acid drifted northeast with prevailing winds over a number of populated areas. More than 3,000 people subsequently sought medical attention for burning eyes, coughing, headaches, and nausea. Almost all were treated and released on the day of the spill. By the day after the release, another 5,000 people had sought medical attention. The spill forced the closure of five freeways in the region as well as some Bay Area Rapid Transit System stations. Apart from corrosive toxicity, there is the additional hazard that the reactions of sulfur trioxide and sulfuric acid vapors with water are extremely exothermic [10, 11]. While the vapors are intrinsically denser than air, there is thus the likelihood of strong, warming-induced buoyancy from reactions with ambient water vapor, water-containing aerosol droplets, and wet environmental surface. Nordin [12] relates just such an occurrence following the Richmond, CA spill, with the plume observed to rise to 300 m. For all practical purposes, sulfur trioxide was the constituent released from the heated tank

  4. RESERVES IN WESTERN BASINS PART IV: WIND RIVER BASIN

    SciTech Connect (OSTI)

    Robert Caldwell

    1998-04-01T23:59:59.000Z

    Vast quantities of natural gas are entrapped within various tight formations in the Rocky Mountain area. This report seeks to quantify what proportion of that resource can be considered recoverable under today's technological and economic conditions and discusses factors controlling recovery. The ultimate goal of this project is to encourage development of tight gas reserves by industry through reducing the technical and economic risks of locating, drilling and completing commercial tight gas wells. This report is the fourth in a series and focuses on the Wind River Basin located in west central Wyoming. The first three reports presented analyses of the tight gas reserves and resources in the Greater Green River Basin (Scotia, 1993), Piceance Basin (Scotia, 1995) and the Uinta Basin (Scotia, 1995). Since each report is a stand-alone document, duplication of language will exist where common aspects are discussed. This study, and the previous three, describe basin-centered gas deposits (Masters, 1979) which contain vast quantities of natural gas entrapped in low permeability (tight), overpressured sandstones occupying a central basin location. Such deposits are generally continuous and are not conventionally trapped by a structural or stratigraphic seal. Rather, the tight character of the reservoirs prevents rapid migration of the gas, and where rates of gas generation exceed rates of escape, an overpressured basin-centered gas deposit results (Spencer, 1987). Since the temperature is a primary controlling factor for the onset and rate of gas generation, these deposits exist in the deeper, central parts of a basin where temperatures generally exceed 200 F and drill depths exceed 8,000 feet. The abbreviation OPT (overpressured tight) is used when referring to sandstone reservoirs that comprise the basin-centered gas deposit. Because the gas resources trapped in this setting are so large, they represent an important source of future gas supply, prompting studies to understand and quantify the resource itself and to develop technologies that will permit commercial exploitation. This study is a contribution to that process.

  5. The Value of a dynamic Environmental Building Certification

    E-Print Network [OSTI]

    Sutton, H. M.

    2013-01-01T23:59:59.000Z

    dynamic certification program (ICEBO 2013) SCOTIA?CENTRE,?St.?John?s East?Port?Properties? 1.Scoping 2.Benchmarking 3.Low?hanging?fruit?? management 4.Low?hanging?fruit?? performance 5.Capital?investments The BOMA BESt Certification Process can...?meaning?to?tenant?efforts ? Personal?connection?to?the?community?around?the? building ? Tenants?will?be?more?compelled?to?help?building? management?in?a?host?of?other?areas. long?lasting?change! BOMA BESt ? a dynamic certification program (ICEBO 2013) ? Conservation...

  6. High speed photometry of faint Cataclysmic Variables: II. RS Car, V365 Car,] V436 Car, AP Cru, RR Cha, BI Ori, CM Phe and V522 Sgr

    E-Print Network [OSTI]

    Patrick A. Woudt; Brian Warner

    2002-04-29T23:59:59.000Z

    Short time scale photometric properties of eight faint Cataclysmic Variable (CV) stars are presented. Nova Carinae 1895 (RS Car) has a photometric modulation at 1.977 h which could be either an orbital or a superhump period. Nova Carinae 1948 (V365 Car) shows flickering, but any orbital modulation has a period in excess of 6 h. The nova-like variable and X-ray source V436 Car has an orbital modulation at P(orb) = 4.207 h, no detectable period near 2.67 h (which had previously given it a possible intermediate polar classification), and Dwarf Nova Oscillations (DNOs) at ~40 s. Nova Crucis 1936 (AP Cru) has a double humped ellipsoidal modulation at P(orb) = 5.12 h and a stable modulation at 1837 s characteristic of an intermediate polar. Nova Chamaeleontis 1953 (RR Cha) is an ecliping system with P(orb) = 3.362 h, but at times shows negative superhumps at 3.271 h and positive superhumps at 3.466 h. In addition it has a stable period at 1950 s, characteristic of an intermediate polar. BI Ori is a dwarf nova which we observed at quiescence and outburst without detecting any orbital modulation. CM Phe is a nova-like variable for which we confirm Hoard, Wachter & Kim-Quijano's (2001) value of P(orb) = 6.454 h. We have identified the remnant of Nova Saggitarii 1931 (V522 Sgr) with a flickering source ~2.2 mag fainter than the previously proposed candidate (which we find to be non-variable).

  7. On the Inside How Low Can Lignin Go?

    E-Print Network [OSTI]

    Kachroo, Pradeep

    of polysaccha- rides in biomass and thus facilitate the production of biofuel. Thus, much re- search has been processability such as they would benefit the production of liquid biofuels by fermentation. Finally, Novaes et

  8. accretion disc 2d: Topics by E-print Network

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

    of a dwarf novae disc through its outburst cycle, from isolating the spectrum of a disc wind to revealing the geometry of disc spiral shocks. I end with an outline of the future...

  9. accretion discs non-barotropic: Topics by E-print Network

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

    of a dwarf novae disc through its outburst cycle, from isolating the spectrum of a disc wind to revealing the geometry of disc spiral shocks. I end with an outline of the future...

  10. accretion disc structure: Topics by E-print Network

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

    of a dwarf novae disc through its outburst cycle, from isolating the spectrum of a disc wind to revealing the geometry of disc spiral shocks. I end with an outline of the future...

  11. E-Print Network 3.0 - atividades urbanas uma Sample Search Results

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

    v. 3, n. 2, p. 195-211, maio-ago. 2008 A cidade, um foco de diversidade agrcola no Rio Negro (Amazonas, Brasil)? Summary: em atividade, uma nova, uma madura e uma antiga, alm...

  12. Charge Effects on the Structure and Composition of Porphyrin Binary Ionic Solids: ZnTPPS/SnTMePyP Nanomaterials

    E-Print Network [OSTI]

    Shelnutt, John A.

    Universidade Nova de Lisboa, Departamento de Ciencia dos Materials, Faculdade de Ciencias e Tecnologia, 2829 Porto, 4169-007 Porto, Portugal REQUIMTE, Departamento de Qumica, Faculdade de Ciencias e Tecnologia

  13. Outstanding problems in nuclear astrophysics: recent progress at TRIUMF

    SciTech Connect (OSTI)

    Davids, B., E-mail: davids@triumf.ca [TRIUMF, 4004 Wesbrook Mall, Vancouver, BC (Canada)

    2014-04-15T23:59:59.000Z

    Recent experimental and theoretical efforts at TRIUMF on nuclear reactions relevant to big bang nucleosynthesis, quiescent stellar fusion, classical novae, and Type I X-ray bursts are described.

  14. Cataclysmic Variables

    E-Print Network [OSTI]

    Robert Connon Smith

    2007-01-23T23:59:59.000Z

    Cataclysmic variables are binary stars in which a relatively normal star is transferring mass to its compact companion. This interaction gives rise to a rich range of behaviour, of which the most noticeable are the outbursts that give the class its name. Novae belong to the class, as do the less well known dwarf novae and magnetic systems. Novae draw their energy from nuclear reactions, while dwarf novae rely on gravity to power their smaller eruptions. All the different classes of cataclysmic variable can be accommodated within a single framework and this article will describe the framework, review the properties of the main types of system and discuss models of the outbursts and of the long-term evolution.

  15. CURRICULUM VITAE JUN KORENAGA

    E-Print Network [OSTI]

    Korenaga, Jun

    , Terra Nova (2008-2010). 1 #12;Search Committee, Senior Editor for JGR Solid Earth (2008-2009). Co Tully (Physics, class of 2014), Madeleine Barrow (Physics, class of 2015), Lien Tran (class of 2016

  16. Fermilab Today

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

    Photo: William Miller, NOvA far detector supervisor In the News Had there been no Higgs boson, this observation would have been the bomb From Science, July 22, 2014 Ever wonder...

  17. National High Magnetic Field Laboratory: Museum of Electricity...

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

    Sulfur Globe In the 17th century, German scientist Otto von Guericke built and carried out experiments with a sulfur globe. He described the globe and its use in Experimenta Nova...

  18. Determining the jet opening-angle of gamma-ray bursts

    E-Print Network [OSTI]

    McEvoy, Erica Lynn, 1981-

    2004-01-01T23:59:59.000Z

    There is growing scientific agreement that at least some cosmic gamma-ray bursts (GRBs) coincide with the deaths of rapidly rotating massive stars - dubbed "hyper-novae." In 1987, a supernova (SN 1987A) was detected in the ...

  19. UC HEP Lunch -23 May 11 Shifting Frontiers

    E-Print Network [OSTI]

    , controls, power supplies, transformers, instrumentation... · NOvA (13 neutrino mixing angle + phase afterward ­ CDF + D0 + small section of Tevatron tunnel public exhibits ­ Removing Tevatron components

  20. CX-007102: Categorical Exclusion Determination | Department of...

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

    Categorical Exclusion Determination NovaThermal Energy Waste Heat Geothermal Heat Pump System CX(s) Applied: A9, A11, B5.1 Date: 10132011 Location(s): Philadelphia,...

  1. CX-007101: Categorical Exclusion Determination | Department of...

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

    Categorical Exclusion Determination NovaThermal Energy Waste Heat Geothermal Heat Pump System CX(s) Applied: A9, B3.11 Date: 10132011 Location(s): Philadelphia,...

  2. CX-007104: Categorical Exclusion Determination | Department of...

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

    Categorical Exclusion Determination NovaThermal Energy Waste Heat Geothermal Heat Pump System CX(s) Applied: A1, A9, A11, B5.1 Date: 10132011 Location(s): Philadelphia,...

  3. PHYSICAL REVIEW C 83, 034611 (2011) Absolute determination of the 22

    E-Print Network [OSTI]

    Garcia, Alejandro

    . MOTIVATION A classical nova is the consequence of thermonuclear runaway on the surface of a white-dwarf star the valley of beta stability to be studied in the laboratory, and the corresponding thermonuclear reaction

  4. Superheterodyne detection of laser generated acoustic waves Suraj Bramhavar,1

    E-Print Network [OSTI]

    Cummington Street, Boston, Massachusetts 02215, USA 2 Bossa Nova Technologies, LLC, 606 Venice Blvd., Venice spatial resolution, where surface heat- ing places strict limitations on the energy deposited by tightly

  5. Alternatives to Hibernation

    E-Print Network [OSTI]

    T. Naylor

    2002-08-16T23:59:59.000Z

    I outline the evidence pertinent to the connection between the nova explosion and mass transfer rates in CVs. I conclude that there is still insufficient evidence to decide whether or not such a connection exists.

  6. E-Print Network 3.0 - abordagem neural para Sample Search Results

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

    SC, Julho, 1997, pp. 190--194. Summary: indicam que a nova abordagem proposta neste artigo produz uma economia con- sider'avel de espaco para... Este trabalho investiga...

  7. E-Print Network 3.0 - abordagem da extensao Sample Search Results

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

    SC, Julho, 1997, pp. 190--194. Summary: indicam que a nova abordagem proposta neste artigo produz uma economia con- sider'avel de espaco para... 'idas. Tanto para...

  8. Volatile abundances in submarine glasses from the North Fiji and Lau back-arc basins

    SciTech Connect (OSTI)

    Aggrey, K.E.; Muenow, D.W.; Sinton, J.M. (Univ. of Hawaii, Honolulu (USA))

    1988-10-01T23:59:59.000Z

    Glasses from submarine lavas of the North Fiji and lau back-arc basins were analyzed by high-temperature mass spectrometry for volatiles. Abundances for H{sub 2}O, Cl, F, S and CO{sub 2} in glasses ranging in composition from depleted, primitive MORB to enriched, transitional tholeiites are reported. The samples divide into three groups based on K{sub 2}O vs. H{sub 2}O, Ba/Zr vs. H{sub 2}O and K{sub 2}O/H{sub 2}O vs. P{sub 2}O{sub 5}/H{sub 2}O variation diagrams. At similar Mg No., the least evolved samples studied are nearly identical to N-type MORB in H{sub 2}O abundances but show Cl contents enriched by a factor of 5. More enriched samples, classified as back-arc basin basalts (BABB) on the basis of major/trace elements and isotopes, are not as hydrous (at similar Mg No.) as those from the Mariana and East Scotia Sea back-arc basins. The data indicate that not all back-arc basins erupt lavas with the distinct volatile and other elemental characteristics of lavas from the Mariana Trough and Scotia Sea.

  9. Fsica da UFRGS conquista Prmio L'Oral-Unesco O Brasil um dos vencedores do 15o Prmio L'Oral-Unesco

    E-Print Network [OSTI]

    Barbosa, Marcia C. B.

    Física da UFRGS conquista Prêmio L'Oréal-Unesco O Brasil é um dos vencedores do 15o° Prêmio L medicamentos ou novas fontes de energia". Reiko Kuroda, da Universidade de Ciência de Tóquio, no Japão, foi a medicina ou para novas fontes de energia". Marcia Barbosa, por sua vez, entrou na seleta lista por

  10. Inertial confinement fusion quarterly report, January--March 1993. Volume 3, No. 2

    SciTech Connect (OSTI)

    Amendt, P.A. [ed.

    1993-09-01T23:59:59.000Z

    This report discusses the following topics: High Fluence Third Harmonic Generation; Ultraviolet Induced Transient Absorption in KDP and Its Influence on Fourth Harmonic Frequency Conversion; Relativistic Semiclassical Atomic Transition Rates; Verification of OPAL Opacity Code Predictions for Conditions of Astrophysical Interest; Solid Hydrogen Surfaces; Large Aperture Sol-Gel Random Phase Plates for Beam Smoothing on Nova; and Neutron Time-of-Flight Ion Temperature Diagnostic for Nova.

  11. Aspects of the evolution of the West Antarctic margin of Gondwanaland

    SciTech Connect (OSTI)

    Grunow, A.M.

    1989-01-01T23:59:59.000Z

    A combination of paleomagnetism, structural field mapping, microprobe analysis, microfabric analysis and {sup 40}Ar/{sup 39}Ar geochronology was used to elucidate the history of the West Antarctic crustal block and the evolution of subduction complexes along the Scotia Ridge. West Antarctica is composed of four crustal blocks whose relationship to East Antarctica and to each other throughout the Phanerozoic is not well known. These blocks are: the Ellsworth-Whitmore Mountains (EWM); the Antarctic Peninsula (AP); Thurston Island (TI); Marie Byrd Land (MBL). Paleomagnetic sampling and analysis were conducted on rocks from the EWM and TI blocks in the hope of constraining the motion of these blocks and the opening history of the Weddell Sea. The paleomagnetic results suggest that the AP, EWM, and TI blocks have moved relative to East Antarctica prior to the mid-Cretaceous and that the main opening of the Weddell Sea was between the Early and mid-Cretaceous. Detailed field mapping was conducted on the subduction complexes of the Scotia Metamorphic Complex (SMC) on Smith Island and Elephant Island (Antarctica). Polyphase ductile deformation characterizes the Smith Island and Elephant Island tectonites. Microprobe analyses indicate that the blue amphiboles from both areas are primary crossite. Pressure-temperature estimates for Smith Island blueschist metamorphism are {approximately}350 C at 6-7 kbars. The {sup 40}Ar/{sup 39}Ar geochronology indicates a complex thermal evolution for the SMC. The north to south increase in intensity of deformation and metamorphism on Elephant Island corresponds to decrease in {sup 40}Ar/{sup 39}Ar age. Uplift of the Smith Island blueschists occurred since 47 Ma while most of the uplift on Elephant Island occurred since {approximately}102 Ma.

  12. Voltage controlled MESFET pulse shape generator

    SciTech Connect (OSTI)

    Burkhart, S.C.

    1994-10-26T23:59:59.000Z

    A programmable pulse shape generator capable of producing pulse shapes for Nova and Beamlet has been designed and simulated using the circuit code SPICE. The design utilizes power MESFETS, which are commonly used in microwave amplifiers. The pulse shape is varied by setting a bias voltage on each in a chain of MESFETS with a 200 ps temporal resolution. The electrical pulse then drives an integrated electro-optic modulator similar to what is on Beamlet. Pulse shapes 22 and 25, used on Nova, have been generated by this design. There is no fundamental barrier to making such a pulse generator for use on the National Ignition Facility. In fact, the longer time scales on the NIF pulse will ease the high speed requirements of the pulse shape generator allowing the use of less expensive components. The next step will be to build a prototype circuit for initial testing on Beamlet and Nova.

  13. Inertial confinement fusion. Quarterly report, July--September 1995, Volume 5, Number 4

    SciTech Connect (OSTI)

    NONE

    1996-06-01T23:59:59.000Z

    The 1990 National Academy of Sciences (NAS) final report recommended proceeding with the construction of a 1- to 2-MJ Nd-doped glass laser designed to achieve ignition in the laboratory (a laser originally called the Nova Upgrade, but now called the National Ignition Facility, or NIF, and envisioned as a national user facility). As a prerequisite, the report recommended completion of a series of target physics objectives on the Nova laser in use at the Lawrence Livermore National Laboratory (LLNL). Meeting these objectives, which were called the Nova Technical Contract (NTC), would demonstrate (the Academy committee believed) that the physics of ignition targets was understood well enough that the laser requirements could be accurately specified. Completion of the NTC objectives was given the highest priority in the NAS report. The NAS committee also recommended a concentrated effort on advanced target design for ignition. As recommended in the report, completion of these objectives has been the joint responsibility of LLNL and the Los Alamos National Laboratory. Most of the articles in this issue of the ICF Quarterly were written jointly by scientists from both institutions. Several of the NTC objectives required the completion of improvements to Nova`s power balance and pointing accuracy and of new diagnostics and new target fabrication capabilities. These improvements were called {open_quotes}Precision Nova{close_quotes} and are documented. The original NTC objectives have been largely met. This Introduction summarizes those objectives and their motivation in the context of the requirements for ignition. The articles that follow describe the NIF ignition target designs and summarize the principal accomplishments in the various elements of the NTC.

  14. The EUV and X-ray Emission of Nonmagnetic Cataclysmic Variables

    E-Print Network [OSTI]

    Christopher W. Mauche

    1997-09-11T23:59:59.000Z

    Recent results are presented and discussed regarding the EUV and X-ray emission of nonmagnetic cataclysmic variables. Emphasis is given to high accretion rate systems (novalike variables and dwarf novae in outburst), and to a number of apparent discrepancies between observations and the theory of the boundary layer between the accretion disk and the surface of the white dwarf. Discussed are EUV and X-ray light curves, dwarf nova oscillations, and spectra, with new and previously unpublished results on SS Cyg and OY Car.

  15. Cohesive means in Slovenian spontaneous dialectal conversations

    E-Print Network [OSTI]

    Kumar, Danila Zuljan

    2010-02-01T23:59:59.000Z

    17 Cohesive means in Slovenian spontaneous dialectal conversations1 Danila zuljan kumar Intitut za slovenski jezik Frana Ramova ZRC SAZU, Raziskovalna postaja Nova Gorica, Delpinova 12, SI 5000 Nova Gorica, DZuljan@zrc-sazu.si V... Centre SASA. SCN III/1 [2010], 1734 18 Slavia Centralis 1/2010 Danila Zuljan Kumar 0 Introduction A discourse (or a text as its product) is not a structural unit, like a clause or a sentence. Rather, it is a semantic unit, which means...

  16. Analysis of CLIP and iCLIP methods for nucleotide-resolution studies of protein-RNA interactions

    E-Print Network [OSTI]

    Sugimoto, Yoichiro; Knig, Julian; Hussain, Shobbir; Zupan, Bla; Curk, Toma; Frye, Michaela; Ule, Jernej

    2012-08-03T23:59:59.000Z

    . Nova CLIP Ago CLIP mRNA-Seq mRNA-Seq (80 nts) Nova iCLIP hnRNPc iCLIP TIA1 iCLIP TIAL1 iCLIP TDP-43 iCLIP Distance from 5!end of cDNA Pr op or tio n of d el et io ns a t t he p os iti on [% ] 5 10 15 20 25 5 10 15 20 25 0.0 0.2 0.4 0.6 0.8 1.0 5 10...

  17. The Quasi-Coherent Oscillations of SS Cygni

    E-Print Network [OSTI]

    Christopher W. Mauche

    1996-08-22T23:59:59.000Z

    Properties of the quasi-coherent oscillations in the extreme ultraviolet (EUV) flux of the dwarf nova SS Cygni are described, with emphasis on (1) the scaling between the period of the oscillation and the EUV flux and (2) the mean power spectra and waveforms. In addition, a quasi-coherent oscillation at \

  18. Laser program annual report, 1979

    SciTech Connect (OSTI)

    Coleman, L.W.; Strack, J.R. (eds.)

    1980-03-01T23:59:59.000Z

    This volume provides a program overview, presenting highlights of the technical accomplishments of the elements of the program, as well as discussions of program resources and facilities. Also covered are the work of the Solid-State Laser program element, which includes systems operations, Nova, and research and development activities. (MOW)

  19. RS Ophiuchi: Thermonuclear Explosion or Disc Instability?

    E-Print Network [OSTI]

    A. R. King; J. E. Pringle

    2009-01-01T23:59:59.000Z

    Sokoloski et al (2008) have presented evidence that within days of its 2006 outburst the recurrent nova RS Ophiuchi produced a pair of highly collimated (halfopening angles of a just few degrees) and high velocity (v ? 5000 km s ?1)

  20. Neutrino and it's lepton

    E-Print Network [OSTI]

    G. Quznetsov

    2008-11-10T23:59:59.000Z

    In this paper I cite p.p. 100-117 of book G. Quznetsov, Probabilistic Treatment of Gauge Theories, in series Contemporary Fundamental Physics,ed. V. Dvoeglazov, Nova Sci. Publ., NY (2007). There I research a bound between neutrino and it's lepton.

  1. Fast Ignition Program Presented at

    E-Print Network [OSTI]

    -The advantages are significant · Efficiency ­ Typical energy efficiency for conversion of 1053 nm hot gas #12;FI program leverages both NNSA and international capabilities · Laser coupling States program is important ­ Nova was first PW in `96 ­ Proceeding with DoE high energy PW initiative

  2. 674 BULLETIN OF THE BUREAU OF FISHERIES FACTORS GOVERNING THE TEMPERATURE OF THE

    E-Print Network [OSTI]

    directly depends on the distribution of this. energy along the solar spectrum and on the transparency of about. 100 meters is governed chiefly by the chilling caused by rigorous winter climate and by. the influx of cold water from the Nova Scotian current in spring, on the one hand, balanced against local

  3. A&A 365, L218L224 (2001) DOI: 10.1051/0004-6361:20000115

    E-Print Network [OSTI]

    Audard, Marc

    as the prototype for type Ia remnants (Baade 1945). The super- nova was recorded in 1572 by Tycho Brahe, hence-Newton observation of the Tycho supernova remnant A. Decourchelle1, J. L. Sauvageot1, M. Audard2, B. Aschenbach3, S November 2000 Abstract. We present the observation of the Tycho supernova remnant obtained with the EPIC

  4. ASTR 270 Lecture 4 Imaging Systems in Astronomy

    E-Print Network [OSTI]

    Parker, Quentin A.

    astronomer Tycho Brahe in 1572. #12;25 Limitations of Radio Telescopes #12;26 Signals are combined to give objects #12;23 Basic components of a radio telescope #12;24 Tycho's SuperNova remnant of 1572 Size: about

  5. DOI: 10.1140/epjad/i2005-06-081-5 Eur. Phys. J. A direct (2005)

    E-Print Network [OSTI]

    Teran, Edgar

    model. PACS. 21.10.-k Properties of nuclei; nuclear energy levels ­ 21.10.Ma Level density ­ 26.50.+x Nuclear physics aspects of novae, supernovae, and other explosive environments 1 Introduction The level nuclear properties such as shell effects or neutron resonance spacings [2,3,4]. On the other hand, full

  6. Direct limits on the B-s(0) oscillation frequency

    E-Print Network [OSTI]

    Baringer, Philip S.; Bean, Alice; Christofek, L.; Coppage, Don; Gardner, J.; Hensel, Carsten; Moulik, Tania; Wilson, Graham Wallace

    2006-07-01T23:59:59.000Z

    . Neal, 65 J. P. Negret, 8 S. Nelson, 50 P. Neustroev, 40 C. Noeding, 23 A. Nomerotski, 51 S. F. Novaes, 4 T. Nunnemann, 25 V. O?Dell, 51 D. C. O?Neil, 5 G. Obrant, 40 V. Oguri, 3 N. Oliveira, 3 N. Oshima, 51 R. Otec, 10 G. J. Otero y Garzo?n, 52 M. Owen...

  7. Measurement of the ?(b) Lifetime in the Exclusive Decay ?b?J/??

    E-Print Network [OSTI]

    Baringer, Philip S.; Bean, Alice; Hensel, Carsten; Moulik, Tania; Wilson, Graham Wallace; Abazov, V. M.; Abbott, B.; Abolins, M.; Acharya, B. S.; Adams, M.

    2007-10-01T23:59:59.000Z

    . Nilsen,22 C. Noeding,22 A. Nomerotski,50 S. F. Novaes,4 T. Nunnemann,24 V. ODell,50 D. C. ONeil,5 G. Obrant,39 C. Ochando,15 D. Onoprienko,59 N. Oshima,50 J. Osta,55 R. Otec,9 G. J. Otero y Garzon,51 M. Owen,44 P. Padley,80 M. Pangilinan,77 N...

  8. Tiragem: 34442 Pas: Portugal

    E-Print Network [OSTI]

    Instituto de Sistemas e Robotica

    enriquecedora a mui- tos níveis, conclui um estudo sobre o programa. O estudo foi realizado com base em cerca de dados indicam que os estudantes "Erasmus se saem melhor no mercado de tra- balho". Sugerem mesmo que forma rápida a novas situações". Os últimos dados do programa Erasmus, referentes ao curso de 2012

  9. The Latin Music Database: Uma Base de Dados Para a Classificac~ao Automatica de G^eneros Musicais

    E-Print Network [OSTI]

    Kent, University of

    The Latin Music Database: Uma Base de Dados Para a Classificac¸~ao Autom´atica de G^eneros Musicais base de dados nova e in´edita, que foi originalmente criada para experimentos relacionados- senvolvido que garante que a base de dados seja facilmente expans´ivel e tenha todas as caracter

  10. L & M band infrared studies of V4332 Sagittarii - detection of the water-ice absorption band at 3.05 microns and the CO fundamental band in emission

    E-Print Network [OSTI]

    Dipankar P. K. Banerjee; Watson P. Varricatt; Nagarhalli M. Ashok

    2004-09-16T23:59:59.000Z

    L and M band observations of the nova-like variable V4332 Sgr are presented. Two significant results are obtained viz. the unusual detection of water ice at 3.05 microns and the fundamental band of 12CO at 4.67 microns in emission. The ice feature is a first detection in a nova-like variable while the CO emission is rarely seen in novae. These results, when considered together with other existing data, imply that V4332 Sgr could be a young object surrounded by a circumstellar disc containing gas, dust and ice. The reason for a nova-like outburst to occur in such a system is unclear. But since planets are believed to form in such disks, it appears plausible that the enigmatic outburst of V4332 Sgr could be due to a planetary infall. We also give a more reliable estimate for an epoch of dust formation around V4332 Sgr which appears to have taken place rather late in 1999 - nearly five years after its outburst.

  11. Tiragem: 18100 Pas: Portugal

    E-Print Network [OSTI]

    Instituto de Sistemas e Robotica

    Estado para a nova universidade. O Governo aprovou ontem a fuso da Universidade Tcnica de Lisboa com aprovao (des- de 11 de Outubro), devido a ne- gociaes entre os reitores e o Governo sobre.petronilho@economico.pt O Governo vai reduzir o corte para o Superior atravs do reforo de verbas (43 milhes de euros) e

  12. Tiragem: 35060 Pas: Portugal

    E-Print Network [OSTI]

    Instituto de Sistemas e Robotica

    investimento directo do Estado no ensino superior vai voltar a descer no prximo ano. O Governo prepara-se para procura de novas receitas prprias e de si- multneo aumento da qualidade". O Governo sublinha tambm que que seria devido. O Governo reconheceu o erro, mas s reps 22 milhes de euros, j este Ve- ro

  13. Tiragem: 46555 Pas: Portugal

    E-Print Network [OSTI]

    Instituto de Sistemas e Robotica

    Tcnica de Lisboa (UTL), na ca- pital, o ministro da Educao, Nu- no Crato, anunciou que o Governo vai Governo. O PBLICO tentou obter uma reaco dos outros dois reitores, mas no foi possvel at hora de aprovao dos esta- tutos e o incio do processo de elei- o dos rgos de governo da nova universidade

  14. Corte de relaes com Nuno Crato e ameaa de demisso no superior

    E-Print Network [OSTI]

    Instituto de Sistemas e Robotica

    participar em reunies com o Governo. Em causa, falta de dilogo durante a discusso do Oramento de 2014 e- de Nova de Lisboa pediu a demisso devido ao desgaste causado pela re- lao tensa com o Governo membros do con- selho. Rendas acusa o Governo de estar a tentar consensos indivi- duais com

  15. Tiragem: 14985 Pas: Portugal

    E-Print Network [OSTI]

    Instituto de Sistemas e Robotica

    a avaliao feita pelo Governo s entidades fundao. Estas so algumas das linhas do decreto-lei que est", adiantou ao EconmicoereitordaUTL,Ant- nio Cruz Serra. Depois de dada a luz verde pelo Governo, vai ar- rancar o processo de eleio dos rgos de governo da nova uni- versidade, que dever estar con- cludoem

  16. SERVIO PBLICO FEDERAL UNIVERSIDADE FEDERAL DE SANTA CATARINA

    E-Print Network [OSTI]

    Floeter, Sergio Ricardo

    da Silva Novas Tecnologias e Sustentabilidade: os desafios para a educação do século XXI Aranranguá Sustentabilidade: os desafios para a educação do século XXI" 2. Uma composição dos projetos "Subprojeto educacional

  17. High-Performance Reactive Fluid Flow Simulations Using Adaptive Mesh Refinement on Thousands of Processors

    E-Print Network [OSTI]

    Rhoads, James

    Thermonuclear Flashes at the University of Chicago. FLASH is a modular, adaptive mesh, parallel simulation code to thermonuclear reactions in supernovae and novae. The FLASH code was designed to study thermonuclear flashes Thermonuclear Flashes, The University of Chicago, Chicago, IL 60637 2 Center for Applied Scientific Computing

  18. STAG UK Newsletter Issue 15

    E-Print Network [OSTI]

    1975-01-01T23:59:59.000Z

    Fleet Technical ManuEll l was due to be published/lest Nove!:loerby 'Ba llClntineBooks . It' should be out now, but welve heerd nothing definite on it. It is advert,ised a t~6.95 by Nova Enterprises, PO Box 149, Biookljn, ~Y!1204, USA. Before sending...

  19. SIAM J. SCI. COMPUT. c xxxx Society for Industrial and Applied Mathematics Vol. xx, No. x, pp. xxxxxxx

    E-Print Network [OSTI]

    Shen, Jie

    Natural Science Foundation of China grant No. 10431060 and Beijing Nova Program grant No. 2005B48 for studying BEC, including phase imprinting [34], cooling of a rotating normal gas [21], and conversion. R. China (hailiang li2002@yahoo.com.cn). The research of this author was supported by National

  20. Controlling Plasma Instabilities: A Multidisciplinary Approach Bedros Afeyan

    E-Print Network [OSTI]

    Levi, Anthony F. J.

    at the University of Maryland, at Lawrence Livermore National Laboratory and at UC Davis, Livermore. His work has e2 me e2 c 1 137 A NIF Hohlraum is a Laser-Plasma Instability (LPI) Candy Store Non of the plasma conditions or interaction modalities that are dominant on the NIF were ever accessed on Nova or Omega. Its

  1. Laser Facilities, Laser-Plasmas & Diagnostics Plasmas Division

    E-Print Network [OSTI]

    Strathclyde, University of

    of freely moving ions and free electrons. Figure 1: The large NOVA laser at Lawrence Livermore National Facility (NIF) is the world's largest and highest-energy laser (Figure 2). It houses 192 intense laser and of a single wavelength. There are a large number of Figure 2: NIF from above & the target chamber. Figure 4

  2. An Overview of Recent Results from the National Spherical Torus Experiment

    E-Print Network [OSTI]

    Princeton Plasma Physics Laboratory

    Hopkins U Los Alamos NL Lawrence Livermore NL Lodestar MIT Nova Photonics, Inc. New York U Old Dominion U U Hiroshima U Hyogo U Kyoto U Kyushu U Kyushu Tokai U NIFS Niigata U U Tokyo JAEA Hebrew U Ioffe, Garching ASCR, Czech Rep U Quebec Supported by #12;Bell / NIFS seminar / 080916 2 "Spherical Torus" Extends

  3. 73Working with Rates Because things change in the

    E-Print Network [OSTI]

    years Problem 6 - 416 gamma-ray bursts spotted in 52 weeks Problem 7 - 3000 kilometers traveled in 200 in 800 years = 2 novas/year Problem 6 - 416 gamma-ray bursts spotted in 52 weeks = 8 gamma-ray bursts

  4. InsideIllinoisFeb. 16, 2006 Vol. 25, No. 15

    E-Print Network [OSTI]

    Lewis, Jennifer

    change their diet after coming to the U.S. ... and that change is negatively affecting their health. PAGE of fish whose adults thrive in icy waters because of anti- freeze proteins (AFPs) in their blood of notothenioids that inhabit the Ross Sea at McMurdo Sound and Terra Nova Bay sur- prisingly lack sufficient

  5. RESEARCH CONTRIBUTIONS Professor Blake Temple's primary fields of research are the mathematical theory of shock

    E-Print Network [OSTI]

    Temple, Blake

    observed in the super nova data, without the need for dark energy or the cosmological constant, flame fronts in combustion, the leading edge of a nuclear explosion, tidal waves, the bore of water let, the water-hammer problem in pipelines, all are examples of the same phenomenon as understood by the modern

  6. 0368.3049.01 Winter 2008 Introduction to Modern Cryptography

    E-Print Network [OSTI]

    Beimel, Amos

    ssh window on nova.cs.tau.ac.il . Alternatively, you can run XMAPLE (graphical) from any Xterminal = M2. c Show that a known plaintext attack with just two pairs of plain- text/ciphertext Ci = Ea that the set S is known to everyone (e.g. it is a plain part of the broadcast) . Briefly explain why your

  7. Direct Measurements of 22 Mg Resonances and Consequences

    E-Print Network [OSTI]

    Garcia, Alejandro

    that depend on the thermonuclear rate of the 22Naðp; ?23Mg reaction. We have measured the strengths of low A classical nova is a thermonuclear outburst on the surface of a white-dwarf star that is accreting hydrogen nucleosynthesis because most of the relevant thermonuclear reaction rates are based on experimental information [1

  8. SIDA DemoEast programme in Estonia. Supply, delivery and installation of wood pellet burning equipment

    E-Print Network [OSTI]

    kW. The second light oil fuelled boiler will be in reserve. The total delivery programme has and Kiltsi light oil fired boilers have been converted to wood pellets burning. The supplier oil fuelling) and 26NOVA (with the capacity 700 kW with light oil fuelling). The boilers are fuelled

  9. Applied Physics B manuscript No. (will be inserted by the editor)

    E-Print Network [OSTI]

    an all solid-state narrow line- width laser source emitting 670 mW output power at 671 nm deliveredNova Universitetscentrum, SE-10691 Stockholm, Sweden 1 Introduction The lithium atomic species is of great interest parameter at ultracold tem- peratures, the s-wave scattering length, is easily tunable for both species

  10. Stellar reaction rate for (22)Mg + p -> (23)Al from the asymptotic normalization coefficient in the mirror nuclear system (22)Ne + n -> (23)Ne

    E-Print Network [OSTI]

    Al-Abdullah, T.; Carstoiu, F.; Chen, X.; Clark, H. L.; Fu, C.; Gagliardi, Carl A.; Lui, Y. -W; Mukhamedzhanov, A.; Tabacaru, G.; Tokimoto, Y.; Trache, L.; Tribble, Robert E.

    2010-01-01T23:59:59.000Z

    The production of (22)Na in ONe novae can be influenced by the (22)Mg(p,gamma)(23)Al reaction. To investigate this reaction rate at stellar energies, we have determined the asymptotic normalization coefficient (ANC) for (22)Mg + p -> (23)Al through...

  11. michael smith ornl bottlenecks and waiting points michael smith, tomomi sunayama*, w. raphael hix,

    E-Print Network [OSTI]

    michael smith ornl bottlenecks and waiting points michael smith, tomomi sunayama*, w. raphael hix, galesburg, illinois, usa #12;michael smith ornl bottlenecks and waiting points nova and x-ray bursts in these explosions & should be identified for further study #12;michael smith ornl bottlenecks and waiting points

  12. Proceedings of the LLNL Technical Women`s Symposium

    SciTech Connect (OSTI)

    von Holtz, E. [ed.

    1993-12-31T23:59:59.000Z

    This report documents events of the LLNL Technical Women`s Symposium. Topics include; future of computer systems, environmental technology, defense and space, Nova Inertial Confinement Fusion Target Physics, technical communication, tools and techniques for biology in the 1990s, automation and robotics, software applications, materials science, atomic vapor laser isotope separation, technical communication, technology transfer, and professional development workshops.

  13. A liquid metal flume for free surface magnetohydrodynamic experiments M. D. Nornberg, H. Ji, J. L. Peterson, and J. R. Rhoads

    E-Print Network [OSTI]

    Ji, Hantao

    in magnetohydrodynamics MHD plays a critical role in both heat and mass transfer problems and in turbulent mixing for these open problems. In a classical nova, the surface of a white dwarf accretes hydrogen rich material from to be used for surfaces in close contact with the plasma. Conventional heat exchanger designs us

  14. ANO XLIII N. 086 12/06/2013 ESTE BOLETIM DE SERVIO CONSTITUDO DE 47 (QUARENTA E SETE) PGINAS

    E-Print Network [OSTI]

    Souza, Max O.

    trabalhos apresentando os pontos de pauta: (1) Reformulação do Núcleo Docente Estruturante - NDE; (2) Reconhecimento do curso. O NDE iniciou-se com um numero grande de professores mas com a nova normativa do NDE que: MANOELA, L?CIA, ARI, ANA PAULA, CLAUDIA MORAES e AGUINALDO. A professora MANOELA sugere organizar via NDE

  15. Karl Marx no Brasil (1 Armando Boito

    E-Print Network [OSTI]

    Floeter, Sergio Ricardo

    1 Karl Marx no Brasil (1 ) Armando Boito Luiz Eduardo Motta ? crescente o interesse pela obra de Karl Marx no Brasil atual. Essa tendência está perfeitamente integrada à nova vaga de interesse pela no Brasil está marcada, evidentemente, pelas características da formação social brasileira, pelas suas

  16. Paleomycology of the Princeton Chert II. Dark-septate fungi in the aquatic angiosperm Eorhiza arnoldii indicate a diverse assemblage of root-colonizing fungi during the Eocene

    E-Print Network [OSTI]

    Klymiuk, Ashley A.; Taylor, Thomas N.; Taylor, Edith L.; Krings, Michael

    2013-09-01T23:59:59.000Z

    -8137.2010.03611.x OKeefe JM, Hower JC, Finkelman RF, Drew JW, Stucker JD. 2011. Petrographic, geochemical and mycological aspects of Miocene coals from the Novaky and Handlova mining districts, Slovakia. Int J Coal Geol 87:268281, doi:10.1016/j.coal.2011...

  17. Shiva automatic pinhole alignment

    SciTech Connect (OSTI)

    Suski, G.J.

    1980-09-05T23:59:59.000Z

    This paper describes a computer controlled closed loop alignment subsystem for Shiva, which represents the first use of video sensors for large laser alignment at LLNL. The techniques used on this now operational subsystem are serving as the basis for all closed loop alignment on Nova, the 200 terawatt successor to Shiva.

  18. Nome do aluno Curso do aluno Evento Cidade/Pais Daniela Hickson Linhares Gomes Medicina International Neurology Congress Cairo/Egito

    E-Print Network [OSTI]

    Lucero, Jorge Carlos

    Nome do aluno Curso do aluno Evento Cidade/Pais Daniela Hickson Linhares Gomes Medicina International Neurology Congress Cairo/Egito Adriana Abreu Resende Medicina International Child Congress Cairo Urbanismo SimBuild 2010 Nova York/EUA Marcos Vinicius Melo de Oliveira Medicina World Congress on Pain

  19. X-ray Pulsations in the Supersoft X-ray Binary CAL 83

    E-Print Network [OSTI]

    P. C. Schmidtke; A. P. Cowley

    2005-09-28T23:59:59.000Z

    X-ray data reveal that the supersoft X-ray binary CAL 83 exhibits 38.4 minute pulsations at some epochs. These X-ray variations are similar to those found in some novae and are likely to be caused by nonradial pulsations the white dwarf. This is the first detection of pulsations in a classical supersoft X-ray binary.

  20. Nature Macmillan Publishers Ltd 1998 6. James, R. H. & Elderfield, H. Chemistry of ore-forming fluids and mineral formation rates in an active

    E-Print Network [OSTI]

    . Geology 24, 1147­1150 (1996). 7. Cann, J. R., Strens, M. R. & Rice, A. A simple magma-driven thermal. Uranium enrichment in metalliferous sediments from the Mid-Atlantic Ridge. Earth Planet. Sci. Lett. 124 and uranium mobility in hydrothermal sulphides. Terra Nova (Abstr. Suppl. 9) 555 (1997). 16. Humphris, S. E

  1. A digital induction wattmeter suitable for use with the A-C network calculator

    E-Print Network [OSTI]

    Larsen, Michael Joe

    1959-01-01T23:59:59.000Z

    is shown in Fig. lg. when the wattneter pointer noved to the left, the relay is energiaed and the polarity of the voltage to the potential coil is reversed. when the pointer novas to the left, the relay contacts are in their nornal position...

  2. Environment Canada Industrial Programs Section

    E-Print Network [OSTI]

    #12;Environment Canada Industrial Programs Section Environmental Protection Guide for Best Management Practices for Process Water Management at Fish Processing Plants in British Columbia h~ NovaTec Consultants Inc. Environmental Engineers and Scientists September 1994 Project No: 1043.16 #12;DISCLAIMER

  3. CX-004735: Categorical Exclusion Determination

    Broader source: Energy.gov [DOE]

    Philadelphia, Pennsylvania: NovaThermal Energy - Waste Heat Geothermal Pilot Demonstration - Energy Effifiency and Conservation Block Grant - American Recovery and Reinvestment ActCX(s) Applied: B5.1Date: 12/14/2010Location(s): Philadelphia, PennsylvaniaOffice(s): Energy Efficiency and Renewable Energy, Golden Field Office

  4. Kinetic extensions of magnetohydrodynamic models for axisymmetric toroidal plasmas

    SciTech Connect (OSTI)

    Cheng, C.Z.

    1989-04-01T23:59:59.000Z

    A nonvariational kinetic-MHD stability code (NOVA-K) has been developed to integrate a set of non-Hermitian integro-differential eigenmode equations due to energetic particles for axisymmetric toroidal plasmas in a general flux coordinate system with an arbitrary Jacobian. The NOVA-K code employs the Galerkin method involving Fourier expansions in the generalized poloidal angle theta and generalized toroidal angle /zeta/ directions, and cubic-B spline finite elements in the radial /Psi/ direction. Extensive comparisons with the existing variational ideal MHD codes show that the ideal MHD version of the NOVA-K code converges faster and gives more accurate results. The NOVA-K code is employed to study the effects of energetic particles on MHD-type modes: the stabilization of ideal MHD internal kink modes and the excitation of ''fishbone'' internal kink modes; and the alpha particle destabilization of toroidicity-induced Alfven eigenmodes (TAE) via transit resonances. Analytical theories are also presented to help explain the NOVA-K results. For energetic trapped particles generated by neutral beam injection (NBI) or ion cyclotron resonant heating (ICRH), a stability window for the n = 1 internal kink mode in the hot particle beta space exists even in the absence of the core ion finite Larmor radius effect. On the other hand, the trapped alpha particles are found to have negligible effects on the stability of the n = 1 internal kink mode, but the circulating alpha particles can strongly destabilize TAE modes via inverse Landau damping associated with the spatial gradient of the alpha particle pressure. 60 refs., 24 figs., 1 tab.

  5. High-power laser source evaluation

    SciTech Connect (OSTI)

    Back, C.A.; Decker, C.D.; Dipeso, G.J.; Gerassimenko, M.; Managan, R.A.; Serduke, F.J.D.; Simonson, G.F.; Suter, L.J.

    1997-07-01T23:59:59.000Z

    This document reports progress in these areas: EXPERIMENTAL RESULTS FROM NOVA: TAMPED XENON UNDERDENSE X-RAY EMITTERS; MODELING MULTI-KEV RADIATION PRODUCTION OF XENON-FILLED BERYLLIUM CANS; MAPPING A CALCULATION FROM LASNEX TO CALE; HOT X RAYS FROM SEEDED NIF CAPSULES; HOHLRAUM DEBRIS MEASUREMENTS AT NOVA; FOAM AND STRUCTURAL RESPONSE CALCULATIONS FOR NIF NEUTRON EXPOSURE SAMPLE CASE ASSEMBLY DESIGN; NON-IGNITION X-RAY SOURCE FLUENCE-AREA PRODUCTS FOR NUCLEAR EFFECTS TESTING ON NIF. Also appended are reprints of two papers. The first is on the subject of ``X-Ray Production in Laser-Heated Xe Gas Targets.`` The second is on ``Efficient Production and Applications of 2- to 10-keV X Rays by Laser-Heated Underdense Radiators.``

  6. 30S Studied with the 32S(p,t)30S Reaction and the 29P(p,{gamma})30S Reaction Rate

    SciTech Connect (OSTI)

    Bardayan, Daniel W [ORNL; Blackmon, Jeff C [ORNL; Fitzgerald, Ryan [ORNL; Hix, William Raphael [ORNL; Grzywacz-Jones, Kate L [ORNL; KOZUB, RAYMOND L [ORNL; Liang, J Felix [ORNL; Livesay, Jake [ORNL; Ma, Zhanwen [ORNL; Roberts, Luke F [ORNL; Smith, Michael Scott [ORNL; Thomas, Jeffrey S [ORNL; Visser, Dale William [ORNL

    2007-01-01T23:59:59.000Z

    The 29P(p,gamma)30S rate affects interpretation of nova Si abundances, which have been precisely measured in presolar grains. The rate is thought to be dominated by previously unobserved 3+ and 2+ resonances above the 30S proton threshold at 4400 keV. To better understand the 29P(p,gamma)30S rate, we have studied the 30S nucleus with the 32S(p,t)30S reaction. We have observed 13 30S levels - 9 of which are above the proton threshold including a level at 4704 keV that is a candidate to be the important 3+ resonance. From the observed triton angular distributions, we additionally constrain the spins of several levels. Using our updated information, we estimate the 29P(p,gamma)30S reaction rate is approximately six times larger at nova temperatures than previously thought.

  7. An evolutionary scenario for the U Scorpii

    E-Print Network [OSTI]

    Ene Ergma; Jelena Gerskevits; Marek J. Sarna

    2000-10-13T23:59:59.000Z

    We perform evolutionary calculations of binary stars to find progenitors of systems with parameters similar to the recurrent novae U Sco. We show that a U Sco type-system may be formed starting with an initial binary system which has a low-mass carbon-oxygen white dwarf as an accretor. Since the evolutionary stage of the secondary is not well known, we calculate sequences with hydrogen rich and helium rich secondaries. The evolution of the binary may be devided into several observable stages as: classical nova, supersoft X-ray source with hydrogen stable burning and strong wind phases, ending up with the formation of a massive white dwarf near the Chandrasekhar mass limit. We follow the chemical evolution of the secondary as well as of the matter lost from the system, and we show that observed ^{12}C/^{13}C and N/C ratios may give some information about the nature of the binary.

  8. Laser program annual report, 1980

    SciTech Connect (OSTI)

    Coleman, L.W.; Krupke, W.F.; Strack, J.R. (eds.)

    1981-06-01T23:59:59.000Z

    Volume 1 provides a Program Overview, presenting highlights of the technical accomplishments of the elements of the Program, a summary of activities carried out under the Glass Laser Experiments Lead Laboratory Program, as well as discussions of Program resources and facilities. Section 2, also in the first volume, covers the work on solid state Nd:glass lasers, including systems operations, Nova and Novette system development, and supporting research and development activities.

  9. XXX SIMP OSIO BRASILEIRO DE TELECOMUNICAC ~OES -SBrT'12, 13-16 DE SETEMBRO DE 2012, BRASILIA, DF Codificac~ao de Video H.264/AVC em Tempo Real e

    E-Print Network [OSTI]

    de Queiroz, Ricardo L.

    ´ilia-DF, Brasil, E-mail: queiroz@ieee.org tem oferecido novas arquiteturas com forte vi´es de economia de energia´ILIA, DF Codificac¸~ao de V´ideo H.264/AVC em Tempo Real e Restrita por Energia Tiago A. da Fonseca e maior e, portanto, maior consumo de energia. Para permitir soluc¸~oes verdes de codificac¸~ao de v

  10. Reviews

    E-Print Network [OSTI]

    2010-02-01T23:59:59.000Z

    Istro-Romanian atlas is Atla- sul lingvistic istroromn, two volumes, Pola, 2002, 2004 (Index), elaborated by Goran Filipi. It ofers a complete and comparable material of the present Istro-Romanian dialects. The survey network includes 11 plac- es...: ejane (in north), unjevica, Nova Vas, Jesenovik, Letaj, Brdo, kabi?i, Trkovci, Zankovci, Miheli, Kostr?an (in south), a Daco-Romanian place: Rudna Glava (Serbia) and two Croatian places in Istria: Brgud, ?epi? (?akavjan Dialect). The last two...

  11. Um quinto dos cursos tem taxa

    E-Print Network [OSTI]

    Instituto de Sistemas e Robotica

    Eco- nómico teve acesso - que está a servir de base para a decisão das novas vagas a abrir nas uni no primeiro trimestre deste ano. ? a partir destes dados, for- necidos pelo lEFP, que a tutela actualiza o os estudantes associem es- tes dados à qualidade das insti- tuições e frisa: "O que estes da- dos

  12. MAC 440/5759 -Sistemas de Objetos Distribudos -Primeiro Semestre de 2006 EP 3: Servio de Fachada Baseado na Tecnologia Web Services

    E-Print Network [OSTI]

    Reverbel, Francisco

    MAC 440/5759 - Sistemas de Objetos Distribuídos - Primeiro Semestre de 2006 EP 3: Serviço de EPs 1 e 2. Naqueles EPs vocês construíram uma aplicação servidora, voltada para vídeo-locadoras, que. A idéia é partir do sistema construído nos EPs 1 e 2 e adicionar a ele novas classes, que implementarão

  13. Gamma-Ray Line Observations with RHESSI

    E-Print Network [OSTI]

    David M. Smith

    2004-04-30T23:59:59.000Z

    The Reuven Ramaty High Energy Solar Spectroscopic Imager (RHESSI) has been observing gamma-ray lines from the Sun and the Galaxy since its launch in February 2002. Here I summarize the status of RHESSI observations of solar lines (nuclear de-excitation, neutron capture, and positron annihilation), the lines of $^{26}$Al and $^{60}$Fe from the inner Galaxy, and the search for positron annihilation in novae.

  14. 10 Questions for a Materials Scientist: Vilas Pol

    Broader source: Energy.gov [DOE]

    Can innovations in materials science help make our world a cleaner place? Argonne National Labs Vilas Pol was recently featured on the PBS NOVA series Making Stuff, where he shared his innovative approach of converting plastic bags into rechargeable battery components. Dr. Pol took some time out of his busy day to give us the inside scoop on how he stumbled upon this solution and next steps for the project.

  15. Personal possessions from the H.M.S. Boscawen: life on board a mid eighteenth-century warship during the French and Indian War

    E-Print Network [OSTI]

    Erwin, Gail

    1994-01-01T23:59:59.000Z

    . . . . . . . . . . . . . . . . . . , . . . 15. Components of a Barrel or Cask 16. Parts of an English Wine Bottle. . . 17. The Parts of a Tobacco Pipe. . . . . . . 45 . 73 . . 78 . . . . . . 92 . . . . . . . 97 . . . . . 103 . . . . 114 . . . . . 133 LIST OF TABLES Page TABLE 1... ~pt Lawrence NOVA SCOTfA~ M ~Ft. Edward oc. ~Grand Pre' paj ~ alit ax nnapoBsy~~ Royal ACADIASr' '1 FIGURE 2. British and French Fortifications in the French and Indian War. After Anderson's "Map of French and British Fortifications During...

  16. Primary feather molt of juvenile mourning doves in Texas

    E-Print Network [OSTI]

    Morrow, Michael Eugene

    1983-01-01T23:59:59.000Z

    PRIMARY FEATHER MOLT OF JUVENILE MOURNING DOVES IN TEXAS A Thesis by MICHAEL EUGENE MORROW Submitted to the Graduate College of Texas AAM University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE August 1983... Major Subject: Wildlife and Fisheries Sciences PRIMARY FEATHER MOLT OF JUVENILE MOURNING DOVES IN TEXAS A Thesis by MICHAEL EUGENE MORROW Approved as to style and content by: Nova J. Silvy (Chairman of Committee) Wallace G. Klussmann (Head...

  17. Scuttlebutt Volume 1, No. 4

    E-Print Network [OSTI]

    2007-01-01T23:59:59.000Z

    @pulpexpo.com; Website: http://www.pulpexpo.com/; Guests: Steve Blum, Kevin Weisman, Vic Mignogna, Arthur Suydam, Darren Dunstan, Mira Furlan, Rachel Luttrell, Joe Straczynski 20 - 22 Terra Nova V - The Emissary Cometh, St Pauls Function Centre, 200 Flinders St... Onehunga, Auckland, New Zealand; Ph: +64 9 625 8054; Email: info@pulpexpo.com; Website: http://www.pulpexpo.com/; Guests: Steve Blum, Kevin Weisman, Vic Mignogna, Arthur Suydam, Darren Dunstan, Mira Furlan, Rachel Luttrell, Joe Straczynski 28 First...

  18. Diversity of Graduates from Professional Degree Programs: The Challenge of Achieving Diverse Applicant Pools and Implementing Successful Recruiting Efforts

    E-Print Network [OSTI]

    Foley, Kathryn; Gallagher, Kallie; Manzano, Magdalena; Meyers, Haileigh; Szabo, Szende; Wantwadi, Peggy; Zheng, Yanzhe

    2010-01-01T23:59:59.000Z

    Austin, Texas 4529 University of Wisconsin-Madison Madison, Wisconsin 4443 University of Michigan at Ann Arbor Ann Arbor, Michigan 4157 Nova Southeastern University Davie, Florida 4084 University of Minnesota - Twin Cities Minneapolis-St. Paul..., Minnesota 4022 University of California-Los Angeles Los Angeles, California 4013 Harvard University Cambridge, Massachusetts 3691 University of Illinois at Urbana- Champaign Urbana-Champaign, Illinois 3535 Stanford University Palo Alto, California...

  19. Fiscalizao e Controle: O Poder Legislativo na Argentina e no Brasil Contemporneos

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1 Fiscalização e Controle: O Poder Legislativo na Argentina e no Brasil Contemporâneos Charles na Argentina e no Brasil Contemporâneos "La société a le droit de demander compte à tout agent public concentrar-se na análise das novas instituições de controle externo no Brasil e na Argentina, de acordo com o

  20. First Simultaneous Optical and EUV Observations of the Quasi-Coherent Oscillations of SS Cygni

    E-Print Network [OSTI]

    Christopher W. Mauche; Edward L. Robinson

    2001-08-03T23:59:59.000Z

    Using EUV photometry obtained with the Extreme Ultraviolet Explorer (EUVE) satellite and UBVR optical photometry obtained with the 2.7-m telescope at McDonald Observatory, we have detected quasi-coherent oscillations (so-called ``dwarf nova oscillations'') in the EUV and optical flux of the dwarf nova SS Cygni during its 1996 October outburst. There are two new results from these observations. First, we have for the first time observed ``frequency doubling:'' during the rising branch of the outburst, the period of the EUV oscillation was observed to jump from 6.59 s to 2.91 s. Second, we have for the first time observed quasi-coherent oscillations simultaneously in the optical and EUV. We find that the period and phase of the oscillations are the same in the two wavebands, finally confirming the long-held assumption that the periods of the optical and EUV/soft X-ray oscillations of dwarf novae are equal. The UBV oscillations can be simply the Rayleigh-Jeans tail of the EUV oscillations if the boundary layer temperature kT_bb ~ 1.2e34 (d/75 pc)^2 erg/s (comparable to that of the accretion disk). Otherwise, the lack of a phase delay between the EUV and optical oscillations requires that the optical reprocessing site lies within the inner third of the accretion disk. This is strikingly different from other cataclysmic variables, where much or all of the disk contributes to the optical oscillations.

  1. Astrophysically important {sup 26}Si states studied with the {sup 28}Si(p,t){sup 26}Si reaction. II. Spin of the 5.914-MeV {sup 26}Si level and galactic {sup 26}Al production

    SciTech Connect (OSTI)

    Bardayan, D. W.; Blackmon, J. C.; Hix, W. R.; Liang, J. F.; Smith, M. S. [Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States); Howard, J. A.; Kozub, R. L. [Physics Department, Tennessee Technological University, Cookeville, Tennessee 38505 (United States); Brune, C. R. [Department of Physics and Astronomy, Ohio University, Athens, Ohio 45701 (United States); Chae, K. Y. [Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996 (United States); Johnson, M. S. [Oak Ridge Associated Universities, Bldg 6008, P. O. Box 2008, Oak Ridge, Tennessee 37831 (United States); Jones, K. L.; Pain, S. D.; Thomas, J. S. [Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08854 (United States); Lingerfelt, E. J.; Scott, J. P. [Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States); Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996 (United States); Livesay, R. J. [Department of Physics, Colorado School of Mines, Golden, Colorado 80401 (United States); Visser, D. W. [Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27599 (United States)

    2006-10-15T23:59:59.000Z

    The {sup 28}Si(p,t){sup 26}Si reaction has been studied to resolve a controversy surrounding the properties of the {sup 26}Si level at 5.914 MeV and its contribution to the {sup 25}Al(p,{gamma}){sup 26}Si reaction rate in novae, which affects interpretations of galactic {sup 26}Al observations. Recent studies have come to contradictory conclusions regarding the spin of this level (0{sup +} or 3{sup +}), with a 3{sup +} assignment implying a large contribution by this level to the {sup 25}Al(p,{gamma}){sup 26}Si reaction rate. We have extended our previous study [Bardayan et al., Phys. Rev. C 65, 032801(R) (2002)] to smaller angles and find the angular distribution of tritons populating the 5.914-MeV level in the {sup 28}Si(p,t){sup 26}Si reaction to be consistent with either a 2{sup +} or 3{sup +} assignment. We have calculated reaction rates under these assumptions and used them in a nova nucleosynthesis model to examine the effects of the remaining uncertainties in the {sup 25}Al(p,{gamma}){sup 26}Si rate on {sup 26}Al production in novae.

  2. Astrophysically Important 31S States Studied with the 32S(p,d)31S Reaction

    SciTech Connect (OSTI)

    Ma, Zhanwen [ORNL; Bardayan, Daniel W [ORNL; Blackmon, Jeff C [ORNL; Fitzgerald, Ryan [ORNL; Guidry, Mike W [ORNL; Grzywacz-Jones, Kate L [ORNL; Hix, William Raphael [ORNL; KOZUB, RAYMOND L [ORNL; Livesay, Jake [ORNL; Smith, Michael Scott [ORNL; Thomas, Jeffrey S [ORNL; Visser, Dale William [ORNL

    2007-01-01T23:59:59.000Z

    In nova outbursts on ONe White Dwarfs, the 30P(p,g)31S reaction plays a crucial role in the synthesis of heavier nuclear species, from Si to Ca. However, this important rate is very uncertain as a result of the lack of spectroscopic information on most of the levels above proton threshold in 31S. To reduce these uncertainties, we have measured differential cross sections for the 32S(p,d)31S reaction and determined excitation energies for states in 31S. A total of 26 states in 31S were observed, including 17 above the proton threshold. Five new states were observed. Spins and parities were determined or constrained for 15 of the observed levels through a distorted wave Born approximation (DWBA) analysis of the angular distributions, of which 6 were made for the first time. We have evaluated 44 levels using existing data in combination with this measurement to calculate a new 30P(p,g)31S reaction rate. We confirmed the spin-parity assignment of 1/2+ for the state at 6263 keV which dominates the 30P(p,g)31S reaction rate at lower temperatures in novae, while the state at 6544 keV dominates at temperatures above 0.2 GK. Our results indicate that the 30P(p,g)31S rate is reduced by up to a factor of 10 at nova temperatures compared to previous estimates.

  3. Astrophysics experiments with radioactive beams at ATLAS

    SciTech Connect (OSTI)

    Back, B. B.; Clark, J. A.; Pardo, R. C.; Rehm, K. E., E-mail: rehm@anl.gov; Savard, G. [Physics Division, Argonne National Laboratory, Argonne, IL 60439 (United States)] [Physics Division, Argonne National Laboratory, Argonne, IL 60439 (United States)

    2014-04-15T23:59:59.000Z

    Reactions involving short-lived nuclei play an important role in nuclear astrophysics, especially in explosive scenarios which occur in novae, supernovae or X-ray bursts. This article describes the nuclear astrophysics program with radioactive ion beams at the ATLAS accelerator at Argonne National Laboratory. The CARIBU facility as well as recent improvements for the in-flight technique are discussed. New detectors which are important for studies of the rapid proton or the rapid neutron-capture processes are described. At the end we briefly mention plans for future upgrades to enhance the intensity, purity and the range of in-flight and CARIBU beams.

  4. A review of "1604-2004: Supernovae as Cosmological Lighthouses." by Massimo Turatto, Stefano Benetti, Luca Zampieri, William Shea, eds.

    E-Print Network [OSTI]

    Giostra, Alessandro

    2006-01-01T23:59:59.000Z

    phenomena, such as SN 1572 and the comet in 1577, which were carefully studied by Tycho Brahe (1546-1601). The research carried out by the Danish astrono- mer is the subject of the paper by Owen Gingerich, ?Tycho Brahe and the Nova of 1572? (3...-12). Gingerich, who belongs to the Harvard Smithsonian Center for Astrophysics, reports the words expressed by Brahe in order to point out the importance of that celestial novelty: ?I was led into such per- plexity by the unbelievability of the thing that I began...

  5. The Diversity of Variations in the Spectra of Type Ia Supernovae

    E-Print Network [OSTI]

    Wagers, Andrew James

    2012-10-19T23:59:59.000Z

    and recorded worldwide would occur. In 1572 and 1604, Tycho Brahe and Johannes Kepler respectively each observed a supernova. Tycho wrote a detailed account of his observations in a book entitled, De Stella Nova, meaning \\the new star," this was the rst... that the stars should show parallax | a shift of position in relation to background objects | if the earth moved about the sun. Almost 2,000 years latter, similar reasoning lead Tycho Brahe to believe that the earth was stationary, the sun orbited the earth...

  6. Neutrino Scattering Uncertainties and their Role in Long Baseline Oscillation Experiments

    E-Print Network [OSTI]

    The MINERvA Collaboration; D. A. Harris

    2004-10-02T23:59:59.000Z

    The field of oscillation physics is about to make an enormous leap forward in statistical precision: first through the MINOS experiment in the coming year, and later through the NOvA and T2K experiments. Because of the relatively poor understanding of neutrino interactions in the energy ranges of these experiments, there are systematics that can arise in interpreting far detector data that can be as large as or even larger than the expected statistical uncertainties. We describe how these systematic errors arise, and how specific measurements in a dedicated neutrino scattering experiment like MINERvA can reduce the cross section systematic errors to well below the statistical errors.

  7. Numerical Analysis of Spherically Convergent Rayleigh-Taylor Experiments

    SciTech Connect (OSTI)

    Galmiche, D.; Cherfils, C.; Glendinning, S.G.; Remington, B.A.; Richard, A.

    2000-05-17T23:59:59.000Z

    In the frame of a CEA/US DOE collaboration, radiation driven spherically convergent experiments were performed on the Nova laser in order m measure the Rayleigh-Taylor growth at the ablation front. Numerical simulations using the 2D Lagrangian code FCI2 have correctly reproduced experiments in moderate convergent geometry. [C. Cherfils et al., PRL 83, 5507 (1999)]. Experiments have addressed convergence ratios up to 4 by considering larger capsules, larger hohlraum and longer laser pulses [S.G. Glendinning et al., to be published in Physics of Plasmas]. Numerical analysis of these high convergence implosions is presented, and the effect of convergence on the Rayleigh-Taylor growth is investigated.

  8. Numerical study of Alfvn eigenmodes in the Experimental Advanced Superconducting Tokamak

    SciTech Connect (OSTI)

    Hu, Youjun, E-mail: yjhu@ipp.cas.cn [Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, Anhui 230031 (China); Center for Magnetic Fusion Theory, Chinese Academy of Sciences, Hefei, Anhui 230031 (China); Li, Guoqiang; Yang, Wenjun; Zhou, Deng; Ren, Qilong [Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, Anhui 230031 (China); Gorelenkov, N. N. [Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543-0451 (United States); Cai, Huishan [Department of Modern Physics, University of Science and Technology of China, Hefei 230026 (China)

    2014-05-15T23:59:59.000Z

    Alfvn eigenmodes in up-down asymmetric tokamak equilibria are studied by a new magnetohydrodynamic eigenvalue code. The code is verified with the NOVA code for the Solovv equilibrium and then is used to study Alfvn eigenmodes in a up-down asymmetric equilibrium of the Experimental Advanced Superconducting Tokamak. The frequency and mode structure of toroidicity-induced Alfvn eigenmodes are calculated. It is demonstrated numerically that up-down asymmetry induces phase variation in the eigenfunction across the major radius on the midplane.

  9. Instituto Superior Tcnico lana Engenharia de Telecomunicaes e Informtica

    E-Print Network [OSTI]

    Instituto de Sistemas e Robotica

    telemóveis, PDA, e iPad), as redes de sensores que estarão na base da Internet-of-Things, e a computação móvel e na cloud". Na base da criação da nova licen- ciatura está a importância que a In- ternet assume- lecomunicações e Informática". Os dados são do Técnico, que aponta co- mo empregadores típicos nesta área

  10. Habitat-related activities and body mass of wintering redhead ducks on coastal ponds in south Texas

    E-Print Network [OSTI]

    Moore, Joseph Lane

    1991-01-01T23:59:59.000Z

    and content by: Milton W. Wailer (Co-Chair of Committee) William H. Riel, Jr. (Co-Chair of Committee) Nova J. Silvy (Member) James W. Webb, Jr. (Member) D id J. Schmid y (Head of Depart nt) August 1991 ABSTRACT Habitat-Related Activities and Body Mass... of Wintering Redhead Ducks on Coastal Ponds in South Texas. (August 1991) Joseph Lane Moore, B. S. F. R. , University of Georgia, Athens Co-Chairs of Advisory Committee: Dr. Milton W. Weller William H. Riel, Jr. Time-activity budgets of individually...

  11. Relativistic smearing of the reflection spectrum in Galactic Black Hole Candidates

    E-Print Network [OSTI]

    C. Done; P. T. Zycki; D. A. Smith

    1997-12-17T23:59:59.000Z

    We identify the reflected component in the GINGA spectra of Nova Muscae, a Black Hole transient system which has been used as the prototype for the recent advection dominated disk models. We see that the reflected spectrum is generally significantly relativistically smeared, and use this and the amount of reflection to track the innermost extent of the accretion disk. We see that the optically thick disk does retreat during the decline, but more slowly than predicted by the advective models, posing problems for this description of the accretion flow.

  12. The accretion of solar material onto white dwarfs: No mixing with core material implies that the mass of the white dwarf is increasing

    SciTech Connect (OSTI)

    Starrfield, Sumner, E-mail: starrfield@asu.edu [School of Earth and Space Exploration, Arizona State University, P. O. Box 871404, Tempe, AZ 85287-1404 (United States)] [School of Earth and Space Exploration, Arizona State University, P. O. Box 871404, Tempe, AZ 85287-1404 (United States)

    2014-04-15T23:59:59.000Z

    Cataclysmic Variables (CVs) are close binary star systems with one component a white dwarf (WD) and the other a larger cooler star that fills its Roche Lobe. The cooler star is losing mass through the inner Lagrangian point of the binary and some unknown fraction of this material is accreted by the WD. One consequence of the WDs accreting material, is the possibility that they are growing in mass and will eventually reach the Chandrasekhar Limit. This evolution could result in a Supernova Ia (SN Ia) explosion and is designated the Single Degenerate Progenitor (SD) scenario. This paper is concerned with the SD scenario for SN Ia progenitors. One problem with the single degenerate scenario is that it is generally assumed that the accreting material mixes with WD core material at some time during the accretion phase of evolution and, since the typical WD has a carbon-oxygen CO core, the mixing results in large amounts of carbon and oxygen being brought up into the accreted layers. The presence of enriched carbon causes enhanced nuclear fusion and a Classical Nova explosion. Both observations and theoretical studies of these explosions imply that more mass is ejected than is accreted. Thus, the WD in a Classical Nova system is losing mass and cannot be a SN Ia progenitor. However, the composition in the nuclear burning region is important and, in new calculations reported here, the consequences to the WD of no mixing of accreted material with core material have been investigated so that the material involved in the explosion has only a Solar composition. WDs with a large range in initial masses and mass accretion rates have been evolved. I find that once sufficient material has been accreted, nuclear burning occurs in all evolutionary sequences and continues until a thermonuclear runaway (TNR) occurs and the WD either ejects a small amount of material or its radius grows to about 10{sup 12} cm and the evolution is ended. In all cases where mass ejection occurs, the mass of the ejecta is far less than the mass of the accreted material. Therefore, all the WDs are growing in mass. It is also found that the accretion time to explosion can be sufficiently short for a 1.0M{sub ?} WD that recurrent novae can occur on a low mass WD. This mass is lower than typically assumed for the WDs in recurrent nova systems. Finally, the predicted surface temperatures when the WD is near the peak of the explosion imply that only the most massive WDs will be significant X-ray emitters at this time.

  13. La musique Lige La musique Lige

    E-Print Network [OSTI]

    Boyer, Edmond

    'hui. Les sources musicales sont rares. Très rares, même. Au point qu'il semble légitime de ne pas en'est pratiquement cité que pour les critiques qu'il émet à l'égard de ces nouvelles sonorités qui deviendront le merveilleux Ars Nova français. Les Liégeois, fussent-ils même savants, sont-ils donc sourds en cette période

  14. Neutrino Scattering Uncertainties and their Role in Long Baseline Oscillation Experiments

    SciTech Connect (OSTI)

    D.A. Harris; G. Blazey; Arie Bodek; D. Boehnlein; S. Boyd; William Brooks; Antje Bruell; Howard S. Budd; R. Burnstein; D. Casper; A. Chakravorty; Michael Christy; Jesse Chvojka; M.A.C. Cummings; P. deBarbaro; D. Drakoulakos; J. Dunmore; Rolf Ent; Hugh Gallagher; David Gaskell; Ronald Gilman; Charles Glashausser; Wendy Hinton; Xiaodong Jiang; T. Kafka; O. Kamaev; Cynthia Keppel; M. Kostin; Sergey Kulagin; Gerfried Kumbartzki; Steven Manly; W.A. Mann; Kevin Mcfarland-porter; Wolodymyr Melnitchouk; Jorge Morfin; D. Naples; John Nelson; Gabriel Niculescu; Maria-ioana Niculescu; W. Oliver; Michael Paolone; Emmanuel Paschos; A. Pla-Dalmau; Ronald Ransome; C. Regis; P. Rubinov; V. Rykalin; Willis Sakumoto; P. Shanahan; N. Solomey; P. Spentzouris; P. Stamoulis; G. Tzanakos; Stephen Wood; F.X. Yumiceva; B. Ziemer; M. Zois

    2004-10-01T23:59:59.000Z

    The field of oscillation physics is about to make an enormous leap forward in statistical precision: first through the MINOS experiment in the coming year, and later through the NOvA and T2K experiments. Because of the relatively poor understanding of neutrino interactions in the energy ranges of these experiments, there are systematics that can arise in interpreting far detector data that can be as large as or even larger than the expected statistical uncertainties. We describe how these systematic errors arise, and how specific measurements in a dedicated neutrino scattering experiment like MINERvA can reduce the cross section systematic errors to well below the statistical errors.

  15. 1.5D Quasilinear Model for Alpha Particle-TAE Interaction in ARIES ACT-I

    SciTech Connect (OSTI)

    K. Ghantous, N.N. Gorelenkov, C. Kessel, F. Poli

    2013-01-30T23:59:59.000Z

    We study the TAE interaction with alpha particle fusion products in ARIES ACT-I using the 1.5D quasilinear model. 1.5D uses linear analytic expressions for growth and damping rates of TAE modes evaluated using TRANSP pro les to calculates the relaxation of pressure pro les. NOVA- K simulations are conducted to validate the analytic dependancies of the rates, and to normalize their absolute value. The low dimensionality of the model permits calculating loss diagrams in large parameter spaces.

  16. Fire and Ice Issue 9

    E-Print Network [OSTI]

    Multiple Contributors

    2005-01-01T23:59:59.000Z

    s FIRE AND ICE # 9 IB FIRE ICE #9 A Blake/Avon slash fanzine r Available from: Kathleen Resch POBox 1766 Temple City, CA 91780 Kathleener@aol.com FIRE AND ICE # 9copyright May, 2005 by Kathleen Resch for the contributors. No reprints... or reproduction without the written permission ofthe author/artist This is an amateur publication and is not p intended to infringe upon the rights ofany holders of"Blake's 7" copyrights. FIRE AND ICE 9 TABLE OF CONTENTS LEAVING ROOM 101 by Nova 2 TOO MANY...

  17. Shedding light on LMA-Dark solar neutrino solution by medium baseline reactor experiments: JUNO and RENO-50

    E-Print Network [OSTI]

    Pouya Bakhti; Yasaman Farzan

    2014-07-02T23:59:59.000Z

    In the presence of Non-Standard neutral current Interactions (NSI) a new solution to solar neutrino anomaly with $\\cos 2\\theta_{12}<0$ appears. We investigate how this solution can be tested by upcoming intermediate baseline reactor experiments, JUNO and RENO-50. We point out a degeneracy between the two solutions when both hierarchy and the $\\theta_{12}$ octant are flipped. We then comment on how this degeneracy can be partially lifted by long baseline experiments sensitive to matter effects such as the NOvA experiment.

  18. Nuclear matter symmetry energy and the neutron skin thickness of heavy nuclei RID A-2398-2009

    E-Print Network [OSTI]

    Chen, LW; Ko, Che Ming; Li, Ba.

    2005-01-01T23:59:59.000Z

    -An Li and W. Udo Schro?der (Nova Science, New York, 2001), p. 35. [4] A. E. L. Dieperink, Y. Dewulf, D. Van Neck, M. Waroquier, and V. Rodin, Phys. Rev. C 68, 064307 (2003). [5] P. Danielewicz, R. Lacey, and W. G. Lynch, Science 298, 1592 (2002...729, 809 (2003). [24] A. Ono, P. Danielewicz, W. A. Friedman, W. G. Lynch, and M. B. Tsang, Phys. Rev. C 68, 051601(R) (2003). [25] J. Y. Liu, W. J. Guo, Y. Z. Xing, and H. Liu, Nucl. Phys. A726, 123 (2003). [26] L. W. Chen, C. M. Ko, and B. A. Li...

  19. Stellar jets

    E-Print Network [OSTI]

    Thomas J. Maccarone

    2008-05-23T23:59:59.000Z

    With a goal of understanding the conditions under which jets might be produced in novae and related objects, I consider the conditions under which jets are produced from other classes of accreting compact objects. I give an overview of accretion disk spectral states, including a discussion of in which states these jets are seen. I highlight the differences between neutron stars and black holes, which may help give us insights about when and how the presence of a solid surface may help or inhibit jet production.

  20. NERSC Featured Announcements

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLas Conchas recovery challengeMultiscale SubsurfaceExascale EratrainingASCRSeeks NewEightNOVA