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1

Category:Des Moines, IA | Open Energy Information  

Open Energy Info (EERE)

IA IA Jump to: navigation, search Go Back to PV Economics By Location Media in category "Des Moines, IA" The following 16 files are in this category, out of 16 total. SVFullServiceRestaurant Des Moines IA MidAmerican Energy Co (Iowa).png SVFullServiceRestauran... 64 KB SVQuickServiceRestaurant Des Moines IA MidAmerican Energy Co (Iowa).png SVQuickServiceRestaura... 64 KB SVHospital Des Moines IA MidAmerican Energy Co (Iowa).png SVHospital Des Moines ... 73 KB SVLargeHotel Des Moines IA MidAmerican Energy Co (Iowa).png SVLargeHotel Des Moine... 72 KB SVLargeOffice Des Moines IA MidAmerican Energy Co (Iowa).png SVLargeOffice Des Moin... 73 KB SVMediumOffice Des Moines IA MidAmerican Energy Co (Iowa).png SVMediumOffice Des Moi... 69 KB SVMidriseApartment Des Moines IA MidAmerican Energy Co (Iowa).png

2

Des Moines Area Community College | .EDUconnections  

NLE Websites -- All DOE Office Websites (Extended Search)

Ames Laboratory Ames Laboratory is one of DOE's 10 Office of Science world-class research laboratories, located on the Iowa State University campus just 35 miles from the Des Moines Area Community College. Ames Lab is operated by Iowa State University. Ames Laboratory Ames Laboratory is one of DOE's 10 Office of Science world-class research laboratories, located on the Iowa State University campus just 35 miles from the Des Moines Area Community College. Ames Lab is operated by Iowa State University. Scientific Programs Science Undergraduate Laboratory Internships at Ames Lab Pre-Service Teacher Program DOE Ames Lab Faculty and Student Program (FaST) DOE Ames Lab Community College Institute Program Des Moines Area Community College Des Moines Area Community College Des Moines, Iowa DOE Applauds DMACC's Science and Technical Programs Agri/Natural Resources Biology Biomass Operations Biotechnology Environmental Science Information Technology Manufacturing Technology Microcomputers Civil Engineering Pre-Medical Telecommunications

3

West Des Moines, Iowa: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Des Moines, Iowa: Energy Resources Des Moines, Iowa: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 41.5772115°, -93.711332° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":41.5772115,"lon":-93.711332,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

4

After 105 Years, Historic City Hall in West Des Moines, Iowa Goes Green |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

After 105 Years, Historic City Hall in West Des Moines, Iowa Goes After 105 Years, Historic City Hall in West Des Moines, Iowa Goes Green After 105 Years, Historic City Hall in West Des Moines, Iowa Goes Green May 9, 2011 - 5:22pm Addthis The restored Historic City Hall building in West Des Moines' Valley Junction neighborhood. | Photo credit: Vicky Saylor The restored Historic City Hall building in West Des Moines' Valley Junction neighborhood. | Photo credit: Vicky Saylor April Saylor April Saylor Former Digital Outreach Strategist, Office of Public Affairs The city of West Des Moines, Iowa is using funding from the Recovery Act to renovate the Historic City Hall building located in Valley Junction, a charming neighborhood that boasts a weekly farmer's market, a block party during the summer months and unique shopping throughout the year.

5

A Touch of Green for Des Moines' Sherman Hill | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

A Touch of Green for Des Moines' Sherman Hill A Touch of Green for Des Moines' Sherman Hill A Touch of Green for Des Moines' Sherman Hill November 3, 2011 - 4:47pm Addthis This 1930s grocery store is currently under renovation by the Green & Main initiative. When complete in Spring 2012, the previously abandoned building will be LEED Platinum certified and feature a green roof and 54 original windows retrofitted to achieve high energy efficiency standards. | Photo courtesy of Green & Main. This 1930s grocery store is currently under renovation by the Green & Main initiative. When complete in Spring 2012, the previously abandoned building will be LEED Platinum certified and feature a green roof and 54 original windows retrofitted to achieve high energy efficiency standards. | Photo courtesy of Green & Main.

6

Des Moines County, Iowa: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Moines County, Iowa: Energy Resources Moines County, Iowa: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 40.9123374°, -91.1736994° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":40.9123374,"lon":-91.1736994,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

7

Des Moines, Washington: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Moines, Washington: Energy Resources Moines, Washington: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 47.4017661°, -122.3242902° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":47.4017661,"lon":-122.3242902,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

8

EECBG Success Story: After 105 Years, Historic City Hall in West Des Moines, Iowa Goes Green  

Energy.gov (U.S. Department of Energy (DOE))

The city of West Des Moines, Iowa is used funding to renovate the Historic City Hall building located in Valley Junction, including the installation of four geothermal heating wells, a rooftop covered with vegetation, solar panels and permeable pavers to allow stormwater through to the soil below. Learn more.

9

Priority Based Reservoir Optimization using Linear Programming: Application to Flood Operation of the Iowa/Des Moines River System  

E-Print Network (OSTI)

for preservation of selected operating priorities and the effect that operating constraints have on systemPriority Based Reservoir Optimization using Linear Programming: Application to Flood Operation of the Iowa/Des Moines River System By MATTHEW JASON BROWN B.S. (The Pennsylvania State University) 1995

Lund, Jay R.

10

Targeted Energy Efficiency Expert Evaluation Report: Neal Smith Federal Building, Des Moines, IA  

SciTech Connect

This report summarizes the energy efficiency measures identified and implemented, and an analysis of the energy savings realized using low-cost/no-cost control system measures identified.

Fernandez, Nicholas; Goddard, James K.; Underhill, Ronald M.; Gowri, Krishnan

2013-03-01T23:59:59.000Z

11

DOE - Office of Legacy Management -- Iowa Army Ammunition Plant - IA 02  

Office of Legacy Management (LM)

Army Ammunition Plant - IA 02 Army Ammunition Plant - IA 02 FUSRAP Considered Sites Iowa Army Ammunition Plant, IA Alternate Name(s): Burlington Ordnance Plant Iowa Ordnance Plant Silas Mason Company IA.02-3 Location: Located in Township 70 North, Range 3 West, Section 32, 5th Principal Meridian, Des Moines County, Burlington, Iowa IA.02-1 IA.02-5 Historical Operations: Assembled nuclear weapons, primarily high explosive components and conducted explosives testing using the high explosive components and depleted uranium. AEC and ERDA operations conducted under permit from the Department of the Army. IA.02-3 IA.02-4 Eligibility Determination: Eligible IA.02-5 Radiological Survey(s): Assessment Survey IA.02-2 Site Status: Cleanup pending by U.S. Army Corps of Engineers. IA.02-6

12

V-059: MoinMoin Multiple Vulnerabilities | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

9: MoinMoin Multiple Vulnerabilities 9: MoinMoin Multiple Vulnerabilities V-059: MoinMoin Multiple Vulnerabilities January 1, 2013 - 5:57am Addthis PROBLEM: MoinMoin Multiple Vulnerabilities PLATFORM: Version(s): MoinMoin 1.x ABSTRACT: Multiple vulnerabilities have been reported in MoinMoin, which can be exploited by malicious users to conduct script insertion attacks and compromise a vulnerable system and by malicious people to manipulate certain data. REFERENCE LINKS: Secunia Advisory SA51663 CVE-2012-6080 CVE-2012-6081 CVE-2012-6082 IMPACT ASSESSMENT: High DISCUSSION: 1) Certain input when handling the AttachFile action is not properly verified before being used to write files. This can be exploited to overwrite arbitrary files via directory traversal sequences. 2) The application allows the upload of files with arbitrary extensions to

13

V-059: MoinMoin Multiple Vulnerabilities | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

9: MoinMoin Multiple Vulnerabilities 9: MoinMoin Multiple Vulnerabilities V-059: MoinMoin Multiple Vulnerabilities January 1, 2013 - 5:57am Addthis PROBLEM: MoinMoin Multiple Vulnerabilities PLATFORM: Version(s): MoinMoin 1.x ABSTRACT: Multiple vulnerabilities have been reported in MoinMoin, which can be exploited by malicious users to conduct script insertion attacks and compromise a vulnerable system and by malicious people to manipulate certain data. REFERENCE LINKS: Secunia Advisory SA51663 CVE-2012-6080 CVE-2012-6081 CVE-2012-6082 IMPACT ASSESSMENT: High DISCUSSION: 1) Certain input when handling the AttachFile action is not properly verified before being used to write files. This can be exploited to overwrite arbitrary files via directory traversal sequences. 2) The application allows the upload of files with arbitrary extensions to

14

Des Moines, Iowa: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

5448°, -93.6091064° 5448°, -93.6091064° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":41.6005448,"lon":-93.6091064,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

15

Des Moines Area Community College | OSTI, US Dept of Energy,...  

Office of Scientific and Technical Information (OSTI)

Life's Calling News Social Media DMACC Facebook DMACC Twitter DMACC YouTube Students Wind Energy and Technology Careers DMACC Veterinary Technology Program DMACC Success Center...

16

IA Blog Archive  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

71 IA Blog Archive en IA News Archive http:energy.goviaia-news-archive IA News Archive

17

Recherches sur la rsistance des sols aux mala-dies. XV. Comparaison des populations de  

E-Print Network (OSTI)

le fer joue un rôle dans le mécanisme de résistance des sols de Chateaurenard. L'objet de cet article populations de Pseudomonas fluorescents du sol résistant de Chateaurenard et du sol sensible de Carque- fou sols de Chateaurenard semble réduite. Ils sont en effet moins nombreux en valeur relative et moins

Paris-Sud XI, Université de

18

ISU College of Engineering/Des Moines Area Community College Transfer Plan  

E-Print Network (OSTI)

MAT 217 5 Phys 221 5 Classical Physics I PHY 213 6 *May also transfer for ABE 160, AerE 160, CE 160 AerE Aerospace Engineering CprE Computer Engineering AE Agricultural Engineering ConE Construction

Hu, Hui

19

SEP Success Story: A Touch of Green for Des Moines' Sherman Hill...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

certified and feature a green roof and 54 original windows retrofitted to achieve high energy efficiency standards. | Photo courtesy of Green & Main. This 1930s grocery store is...

20

Energy Efficiency and Conservation Block Grant Program  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

U.S. Department of Energy Categorical Exclusion Determination Form Program or Field Office: Energy Efficiency and Conservation Block Grant Program Project Title IA-City-West Des Moines Location: City West Des Moines IA American Recovery and Reinvestment Act: Proposed Action or Project Description: 1) Fund energy audits (benchmarking) and educational outreach and marketing campaign, 2) create

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


21

Les associations dans le systme sanitaire et social en France : des territoires de l'invisible.  

E-Print Network (OSTI)

Les associations dans le système sanitaire et social en France : des territoires de l'invisible nébuleuse d'associations moins structurées et peu repérables qui forment des « territoires de l'invisible structured and not much discernible, which forms "spaces of the invisible". LA SANTE, LE SOCIAL ET LES

Paris-Sud XI, Université de

22

rencontre du non-lineaire 2009 101 Effets d'un forcage spatial sur la dynamique des fronts  

E-Print Network (OSTI)

. Haudin1 , R. G. El´ias2 , M. G. Clerc2 ,, U. Bortolozzo1 , & S. Residori1 1 Institut Non Lin´eaire de´eris´ee par une propagation du front visant `a diminuer la taille du domaine le moins stable ´energ

Gavilan, Marcel G. Clerc

23

Category:Mason, IA | Open Energy Information  

Open Energy Info (EERE)

IA IA Jump to: navigation, search Go Back to PV Economics By Location Media in category "Mason, IA" The following 16 files are in this category, out of 16 total. SVQuickServiceRestaurant Mason IA MidAmerican Energy Co (Iowa).png SVQuickServiceRestaura... 64 KB SVFullServiceRestaurant Mason IA MidAmerican Energy Co (Iowa).png SVFullServiceRestauran... 64 KB SVHospital Mason IA MidAmerican Energy Co (Iowa).png SVHospital Mason IA Mi... 73 KB SVLargeHotel Mason IA MidAmerican Energy Co (Iowa).png SVLargeHotel Mason IA ... 72 KB SVLargeOffice Mason IA MidAmerican Energy Co (Iowa).png SVLargeOffice Mason IA... 73 KB SVMediumOffice Mason IA MidAmerican Energy Co (Iowa).png SVMediumOffice Mason I... 69 KB SVMidriseApartment Mason IA MidAmerican Energy Co (Iowa).png

24

An Assessment of Energy Potential at Non-Powered Dams in the...  

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

DAM CEMVR DES MOINES POLK IA DES MOINES 1975 94.2 2,021 119,400 24.3 84 B. EVERETT JORDAN DAM CESAW HAYWOOD CHATHAM NC HAW 1974 61.0 1,460 55,846 23.9 85 LOCK C-1 DAM AT...

25

New approaches for modeling type Ia supernovae  

E-Print Network (OSTI)

ich and J. Stein. On the thermonuclear runaway in Type IaSmall-Scale Stability of Thermonuclear Flames o in Type IaS. E. Woosley. The thermonuclear explosion of chandrasekhar

Zingale, Michael; Almgren, Ann S.; Bell, John B.; Day, Marcus S.; Rendleman, Charles A.; Woosley, Stan

2007-01-01T23:59:59.000Z

26

Gochimie des olivines plantaires : une approche micro-analytique par EPMA et LA-ICPMS  

E-Print Network (OSTI)

. Méthode : Une série d'olivines d'origines terrestre et extra-terrestre seront analysés : (1) Olivine (achondrites basaltiques, basaltes terrestres). Donc les olivines sont les témoins des processus de formation, Brachinites, HED, SNC) (5) Olivine terrestre (Manteau, Cumulat, Komatiites, MORB, OIB) (6) Olivine produit

Demouchy, Sylvie

27

Communication socitale des enseignes, le consommateur est-il toujours dupe ? le rle de la rputation  

E-Print Network (OSTI)

'améliorer leur image auprès des consommateurs. Néanmoins, face à la profusion d'arguments plus ou moins fondés, l reputation in brand-equity building with societal communication: an attribution theory approach Abstract: Many retailers communicate about their societal engagements to improve their image. Yet, overwhelmed

Paris-Sud XI, Université de

28

Abstract IA37: Clinical genomics  

Science Journals Connector (OSTI)

...Research. 15 October 2014 meeting-abstract Clinical Genomics Clinical Genomics: Oral Presentations - Invited Abstracts Abstracts...2013; San Diego, CA Abstract IA37: Clinical genomics Katherine A. Janeway Dana-Farber Cancer Institute...

Katherine A. Janeway

2014-10-15T23:59:59.000Z

29

String Landscape and Supernovae Ia  

E-Print Network (OSTI)

We present a model for the triggering of Supernovae Ia (SN Ia) by a phase transition to exact supersymmetry (susy) in the core of a white dwarf star. The model, which accomodates the data on SN Ia and avoids the problems of the standard astrophysical accretion based picture, is based on string landscape ideas and assumes that the decay of the false broken susy vacuum is enhanced at high density. In a slowly expanding susy bubble, the conversion of pairs of fermions to pairs of degenerate scalars releases a significant amount of energy which induces fusion in the surrounding normal matter shell. After cooling, the absence of degeneracy pressure causes the susy bubble to collapse to a black hole of about 0.1 solar mass or to some other stable susy object.

L. Clavelli

2011-10-09T23:59:59.000Z

30

Steamboat IA Geothermal Facility | Open Energy Information  

Open Energy Info (EERE)

IA Geothermal Facility IA Geothermal Facility Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Steamboat IA Geothermal Facility General Information Name Steamboat IA Geothermal Facility Facility Steamboat IA Sector Geothermal energy Location Information Location Washoe, Nevada Coordinates 40.5608387°, -119.6035495° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":40.5608387,"lon":-119.6035495,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

31

THE LOCAL HOSTS OF TYPE Ia SUPERNOVAE  

SciTech Connect

We use multi-wavelength, matched aperture, integrated photometry from the Galaxy Evolution Explorer (GALEX), the Sloan Digital Sky Survey, and the RC3 to estimate the physical properties of 166 nearby galaxies hosting 168 well-observed Type Ia supernovae (SNe Ia). The ultraviolet (UV) imaging of local SN Ia hosts from GALEX allows a direct comparison with higher-redshift hosts measured at optical wavelengths that correspond to the rest-frame UV. Our data corroborate well-known features that have been seen in other SN Ia samples. Specifically, hosts with active star formation produce brighter and slower SNe Ia on average, and hosts with luminosity-weighted ages older than 1 Gyr produce on average more faint, fast, and fewer bright, slow SNe Ia than younger hosts. New results include that in our sample, the faintest and fastest SNe Ia occur only in galaxies exceeding a stellar mass threshold of approx10{sup 10} M{sub sun}, leading us to conclude that their progenitors must arise in populations that are older and/or more metal rich than the general SN Ia population. A low host extinction subsample hints at a residual trend in peak luminosity with host age, after correcting for light-curve shape, giving the appearance that older hosts produce less-extincted SNe Ia on average. This has implications for cosmological fitting of SNe Ia, and suggests that host age could be useful as a parameter in the fitting. Converting host mass to metallicity and computing {sup 56}Ni mass from the supernova light curves, we find that our local sample is consistent with a model that predicts a shallow trend between stellar metallicity and the {sup 56}Ni mass that powers the explosion, but we cannot rule out the absence of a trend. We measure a correlation between {sup 56}Ni mass and host age in the local universe that is shallower and not as significant as that seen at higher redshifts. The details of the age-{sup 56}Ni mass correlations at low and higher redshift imply a luminosity-weighted age threshold of approx3 Gyr for SN Ia hosts, above which they are less likely to produce SNe Ia with {sup 56}Ni masses above approx0.5 M{sub sun}.

Neill, James D.; Martin, D. Christopher; Barlow, Tom A.; Foster, Karl; Friedman, Peter G.; Morrissey, Patrick; Wyder, Ted K. [California Institute of Technology, 1200 E. California Blvd., Pasadena, CA 91125 (United States); Sullivan, Mark [University of Oxford, Denys Wilkinson Building, Keble Road, Oxford, OX1 3RH (United Kingdom); Howell, D. Andrew [Las Cumbres Observatory Global Telescope Network, 6740 Cortona Dr., Suite 102, Goleta, CA 93117 (United States); Conley, Alex [Department of Astronomy and Astrophysics, University of Toronto, 50 St. George Street, Toronto, ONM5S3H8 (Canada); Seibert, Mark; Madore, Barry F. [The Observatories of the Carnegie Institute of Washington, 813 Santa Barbara Street, Pasadena, CA, 91101 (United States); Neff, Susan G. [Laboratory for Astronomy and Solar Physics, NASA Goddard Space Flight Center, Greenbelt, MD 20771 (United States); Schiminovich, David [Department of Astronomy, Columbia University, New York, NY 10027 (United States); Bianchi, Luciana [Center for Astrophysical Sciences, Johns Hopkins University, 3400 N. Charles St., Baltimore, MD 21218 (United States); Donas, Jose; Milliard, Bruno [Laboratoire d'Astrophysique de Marseille, BP 8, Traverse du Siphon, 13376 Marseille Cedex 12 (France); Heckman, Timothy M. [Department of Physics and Astronomy, Johns Hopkins University, Homewood Campus, Baltimore, MD 21218 (United States); Lee, Young-Wook [Center for Space Astrophysics, Yonsei University, Seoul 120-749 (Korea, Republic of); Rich, R. Michael [Department of Physics and Astronomy, University of California, Los Angeles, CA 90095 (United States)

2009-12-20T23:59:59.000Z

32

The University of Iowa College of Engineering Engineering Professional Development  

E-Print Network (OSTI)

Naperville, IL City of Rock Island Rock Island, IL City of St. Charles St. Charles, IL City of W. Des Moines Great Lakes Dredge and Dock Chicago, IL Habitat for Humanity Iowa City, IA Hall and Hall EngineersAmericanEnergy Sioux City, IA MNTAP: Valley Craft Lake City, MN Moffat and Nichol Long Beach, CA NextERA Energy (FPL

Jacob, Mathews

33

Supersoft Sources as SN Ia Progenitors  

E-Print Network (OSTI)

of the existence of supersoft X­ray sources. It is argued that SNe Ia are thermonuclear explosions of accreting C is that they represent thermonuclear disruptions of mass accreting white dwarfs (WDs). Thus, the basic ingredient

Greiner, Jochen

34

ETODOS NUM ERICOS EN INGENIER IA  

E-Print Network (OSTI)

CONSERVATIVOS ENERG #19; IA-MOMENTO Jos#19;e M. Goicolea Ruig#19;omez y Juan Carlos Garc#19;#16;a Orden EscuelaM #19; ETODOS NUM #19; ERICOS EN INGENIER #19; IA R. Abascal, J. Dom#19;#16;nguez y G. Bugeda (Eds.upm.es Palabras clave: Din#19;amica no lineal, mecanismos, sistemas multicuerpo exibles, energ#19;#16;a- momento

Romero, Ignacio

35

Rolling Hills (IA) | Open Energy Information  

Open Energy Info (EERE)

Rolling Hills (IA) Rolling Hills (IA) Jump to: navigation, search Name Rolling Hills (IA) Facility Rolling Hills (IA) Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner MidAmerican Energy Company Developer MidAmerican Energy Company Energy Purchaser MidAmerican Energy Company Location Massena IA Coordinates 41.230443°, -94.75459° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":41.230443,"lon":-94.75459,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

36

Energy Efficiency and Conservation Block Grant Program  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

IA-City-Des Moines IA-City-Des Moines Location: City Des Moines IA American Recovery and Reinvestment Act: Proposed Action or Project Description 1) Reimbursement for the cost of preparing the energy efficiency and conservation strategy, 2) perform energy audits to benchmark the energy performance of municipal buildings and fund public education/outreach campaign, 3) revolving loan program for energy efficiency retrofits and incremental costs for purchasing hybrid vehicles, 4) energy efficiency window retrofits at City Hall and the Police Station, 5) fund program to increase cycling and walking opportunities in the city including safety training and bicycle rodeo, 6) technical consultant services to develop long-term energy plan, 7) technical services to assist with building energy audits, and 8) replace high pressure sodium lighting with light-emitting diode

37

The 3rd International Conference of IIR on Magnetic Refrigeration at Room Temperature, Des Moines, Iowa, U.S.A, 11-15 May 2009  

E-Print Network (OSTI)

REFRIGERATION SYSTEMS USING DESIGN OF EXPERIMENTS J. ROUDAUT1,2,* , H. BOUCHEKARA1 , A. KEDOUS-LEBOUC1 , J Refrigeration (AMRR) system. The heat transfer fluid is water, the regenerator consists of stacked gadolinium avoid using greenhouse gases and lower energy consumption by 20-30% over conventional technology

Boyer, Edmond

38

A threat-based definition of IA and IA-enabled products.  

SciTech Connect

This paper proposes a definition of 'IA and IA-enabled products' based on threat, as opposed to 'security services' (i.e., 'confidentiality, authentication, integrity, access control or non-repudiation of data'), as provided by Department of Defense (DoD) Instruction 8500.2, 'Information Assurance (IA) Implementation.' The DoDI 8500.2 definition is too broad, making it difficult to distinguish products that need higher protection from those that do not. As a consequence the products that need higher protection do not receive it, increasing risk. The threat-based definition proposed in this paper solves those problems by focusing attention on threats, thereby moving beyond compliance to risk management. (DoDI 8500.2 provides the definitions and controls that form the basis for IA across the DoD.) Familiarity with 8500.2 is assumed.

Shakamuri, Mayuri; Schaefer, Mark A.; Campbell, Philip LaRoche

2010-09-01T23:59:59.000Z

39

A threat-based definition of IA- and IA-enabled products.  

SciTech Connect

This paper proposes a definition of 'IA and IA-enabled products' based on threat, as opposed to 'security services' (i.e., 'confidentiality, authentication, integrity, access control or non-repudiation of data'), as provided by Department of Defense (DoD) Instruction 8500.2, 'Information Assurance (IA) Implementation.' The DoDI 8500.2 definition is too broad, making it difficult to distinguish products that need higher protection from those that do not. As a consequence the products that need higher protection do not receive it, increasing risk. The threat-based definition proposed in this paper solves those problems by focusing attention on threats, thereby moving beyond compliance to risk management. (DoDI 8500.2 provides the definitions and controls that form the basis for IA across the DoD.) Familiarity with 8500.2 is assumed.

Shakamuri, Mayuri; Schaefer, Mark A.; Campbell, Philip LaRoche

2010-07-01T23:59:59.000Z

40

Comparison of Recent SnIa datasets  

E-Print Network (OSTI)

We rank the six latest Type Ia supernova (SnIa) datasets (Constitution (C), Union (U), ESSENCE (Davis) (E), Gold06 (G), SNLS 1yr (S) and SDSS-II (D)) in the context of the Chevalier-Polarski-Linder (CPL) parametrization $w(a)=w_0+w_1 (1-a)$, according to their Figure of Merit (FoM), their consistency with the cosmological constant ($\\Lambda$CDM), their consistency with standard rulers (Cosmic Microwave Background (CMB) and Baryon Acoustic Oscillations (BAO)) and their mutual consistency. We find a significant improvement of the FoM (defined as the inverse area of the 95.4% parameter contour) with the number of SnIa of these datasets ((C) highest FoM, (U), (G), (D), (E), (S) lowest FoM). Standard rulers (CMB+BAO) have a better FoM by about a factor of 3, compared to the highest FoM SnIa dataset (C). We also find that the ranking sequence based on consistency with $\\Lambda$CDM is identical with the corresponding ranking based on consistency with standard rulers ((S) most consistent, (D), (C), (E), (U), (G) least consistent). The ranking sequence of the datasets however changes when we consider the consistency with an expansion history corresponding to evolving dark energy $(w_0,w_1)=(-1.4,2)$ crossing the phantom divide line $w=-1$ (it is practically reversed to (G), (U), (E), (S), (D), (C)). The SALT2 and MLCS2k2 fitters are also compared and some peculiar features of the SDSS-II dataset when standardized with the MLCS2k2 fitter are pointed out. Finally, we construct a statistic to estimate the internal consistency of a collection of SnIa datasets. We find that even though there is good consistency among most samples taken from the above datasets, this consistency decreases significantly when the Gold06 (G) dataset is included in the sample.

J. C. Bueno Sanchez; S. Nesseris; L. Perivolaropoulos

2009-10-01T23:59:59.000Z

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


41

Influence du son sur le pancras exocrine chez le rat, par Madou FOFANA, J. CHARIOT, M. SOUCHARD, C. ROZ, Biologie et Physiologie des Cellules Digestives (U. 239 INSERM), Facult  

E-Print Network (OSTI)

Influence du son sur le pancréas exocrine chez le rat, par Madou FOFANA, J. CHARIOT, M. SOUCHARD, C chez le Rat. Techniques. - Les rats (Wistar CF mâles) reçoivent soit un régime témoin sans fibres (pour pancréatiques des principales enzymes, de l'ADN et de l'ARN. Expérience 2 : Les rats sont traités pendant deux

Boyer, Edmond

42

DOE - Office of Legacy Management -- Bendix Aviation Corp Pioneer Div - IA  

Office of Legacy Management (LM)

Bendix Aviation Corp Pioneer Div - Bendix Aviation Corp Pioneer Div - IA 05 FUSRAP Considered Sites Site: BENDIX AVIATION CORP., PIONEER DIV. (IA.05 ) Eliminated from consideration under FUSRAP Designated Name: Not Designated Alternate Name: Pioneer Division, Bendix Aviation Corporation Bendix Aviation Corporation Bendix Pioneer Division IA.05-1 IA.05-2 IA.05-3 Location: Davenport , Iowa IA.05-1 Evaluation Year: 1990 IA.05-2 IA.05-4 Site Operations: Conducted studies to investigate the feasibility of using sonic cleaning equipment to decontaminate uranium contaminated drums. IA.05-1 Site Disposition: Eliminated - Potential for contamination considered remote based on limited operations at the site IA.05-2 IA.05-4 IA.05-5 Radioactive Materials Handled: Yes Primary Radioactive Materials Handled: Uranium IA.05-1

43

DOE - Office of Legacy Management -- Titus Metals - IA 04  

Office of Legacy Management (LM)

from consideration under FUSRAP Also see Documents Related to TITUS METALS IA.04-1 - Argonne National Laboratory Memorandum; Lonergan to Novak; Subject: Extrusion of Billets,...

44

Conformal cosmological model and SNe Ia data  

SciTech Connect

Now there is a huge scientific activity in astrophysical studies and cosmological ones in particular. Cosmology transforms from a pure theoretical branch of science into an observational one. All the cosmological models have to pass observational tests. The supernovae type Ia (SNe Ia) test is among the most important ones. If one applies the test to determine parameters of the standard Friedmann-Robertson-Walker cosmological model one can conclude that observations lead to the discovery of the dominance of the {Lambda} term and as a result to an acceleration of the Universe. However, there are big mysteries connected with an origin and an essence of dark matter (DM) and the {Lambda} term or dark energy (DE). Alternative theories of gravitation are treated as a possible solution of DM and DE puzzles. The conformal cosmological approach is one of possible alternatives to the standard {Lambda}CDM model. As it was noted several years ago, in the framework of the conformal cosmological approach an introduction of a rigid matter can explain observational data without {Lambda} term (or dark energy). We confirm the claim with much larger set of observational data.

Zakharov, A. F., E-mail: zakharov@itep.ru [National Astronomical Observatories of Chinese Academy of Sciences (China); Pervushin, V. N. [Joint Institute for Nuclear Research, Bogoliubov Laboratory for Theoretical Physics (Russian Federation)

2012-11-15T23:59:59.000Z

45

Type Ia Supernova Explosion: Gravitationally Confined Detonation  

Science Journals Connector (OSTI)

We present a new mechanism for Type Ia supernova explosions in massive white dwarfs. The scenario follows from relaxing assumptions of symmetry and involves a detonation born near the stellar surface. The explosion begins with an essentially central ignition of a deflagration that results in the formation of a buoyancy-driven bubble of hot material that reaches the stellar surface at supersonic speeds. The bubble breakout laterally accelerates fuel-rich outer stellar layers. This material, confined by gravity to the white dwarf, races along the stellar surface and is focused at the location opposite to the point of the bubble breakout. These streams of nuclear fuel carry enough mass and energy to trigger a detonation just above the stellar surface that will incinerate the white dwarf and result in an energetic explosion. The stellar expansion following the deflagration redistributes mass in a way that ensures production of intermediate-mass and iron group elements with ejecta having a strongly layered structure and a mild amount of asymmetry following from the early deflagration phase. This asymmetry, combined with the amount of stellar expansion determined by details of the evolution (principally the energetics of deflagration, timing of detonation, and structure of the progenitor), can be expected to create a family of mildly diverse Type Ia supernova explosions.

T. Plewa; A. C. Calder; D. Q. Lamb

2004-01-01T23:59:59.000Z

46

The distant type Ia supernova rate  

SciTech Connect

We present a measurement of the rate of distant Type Ia supernovae derived using 4 large subsets of data from the Supernova Cosmology Project. Within this fiducial sample,which surveyed about 12 square degrees, thirty-eight supernovae were detected at redshifts 0.25--0.85. In a spatially flat cosmological model consistent with the results obtained by the Supernova Cosmology Project, we derive a rest-frame Type Ia supernova rate at a mean red shift z {approx_equal} 0.55 of 1.53 {sub -0.25}{sub -0.31}{sup 0.28}{sup 0.32} x 10{sup -4} h{sup 3} Mpc{sup -3} yr{sup -1} or 0.58{sub -0.09}{sub -0.09}{sup +0.10}{sup +0.10} h{sup 2} SNu(1 SNu = 1 supernova per century per 10{sup 10} L{sub B}sun), where the first uncertainty is statistical and the second includes systematic effects. The dependence of the rate on the assumed cosmological parameters is studied and the redshift dependence of the rate per unit comoving volume is contrasted with local estimates in the context of possible cosmic star formation histories and progenitor models.

Pain, R.; Fabbro, S.; Sullivan, M.; Ellis, R.S.; Aldering, G.; Astier, P.; Deustua, S.E.; Fruchter, A.S.; Goldhaber, G.; Goobar, A.; Groom, D.E.; Hardin, D.; Hook, I.M.; Howell, D.A.; Irwin, M.J.; Kim, A.G.; Kim, M.Y.; Knop, R.A.; Lee, J.C.; Perlmutter, S.; Ruiz-Lapuente, P.; Schahmaneche, K.; Schaefer, B.; Walton, N.A.

2002-05-20T23:59:59.000Z

47

The Distant Type Ia Supernova Rate  

DOE R&D Accomplishments (OSTI)

We present a measurement of the rate of distant Type Ia supernovae derived using 4 large subsets of data from the Supernova Cosmology Project. Within this fiducial sample, which surveyed about 12 square degrees, thirty-eight supernovae were detected at redshifts 0.25--0.85. In a spatially flat cosmological model consistent with the results obtained by the Supernova Cosmology Project, we derive a rest-frame Type Ia supernova rate at a mean red shift z {approx_equal} 0.55 of 1.53 {sub -0.25}{sub -0.31}{sup 0.28}{sup 0.32} x 10{sup -4} h{sup 3} Mpc{sup -3} yr{sup -1} or 0.58{sub -0.09}{sub -0.09}{sup +0.10}{sup +0.10} h{sup 2} SNu(1 SNu = 1 supernova per century per 10{sup 10} L{sub B}sun), where the first uncertainty is statistical and the second includes systematic effects. The dependence of the rate on the assumed cosmological parameters is studied and the redshift dependence of the rate per unit comoving volume is contrasted with local estimates in the context of possible cosmic star formation histories and progenitor models.

Pain, R.; Fabbro, S.; Sullivan, M.; Ellis, R. S.; Aldering, G.; Astier, P.; Deustua, S. E.; Fruchter, A. S.; Goldhaber, G.; Goobar, A.; Groom, D. E.; Hardin, D.; Hook, I. M.; Howell, D. A.; Irwin, M. J.; Kim, A. G.; Kim, M. Y.; Knop, R. A.; Lee, J. C.; Perlmutter, S.; Ruiz-Lapuente, P.; Schahmaneche, K.; Schaefer, B.; Walton, N. A.

2002-05-28T23:59:59.000Z

48

The University of Iowa College of Engineering Engineering Professional Development  

E-Print Network (OSTI)

Naperville, IL City of Rock Island Rock Island, IL City of St. Charles St. Charles, IL City of W. Des Moines and Marshall Grapevine, TX Great Lakes Dredge and Dock Chicago, IL Habitat for Humanity Iowa City, IA Hall MidAmerican Energy Sioux Falls, SD MNTAP: Valley Craft Lake City, MN Moffat and Nichol Long Beach, CA

Casavant, Tom

49

DEPARTMENT OF ENGLISH & LINGUISTICS  

E-Print Network (OSTI)

. Louis, MO Actress, Stage Left, Chicago, IL Assistant to Artistic Director, Immediacy Theatre Project Case Manager, Liberty Mutual Group; Kansas City, MO Editorial Assistant in Health Professions; Elsevier, AmeriCorps; Hawley, MA Iowa Attorney General; Des Moines, IA Librarian; Liberty, MO Missouri State

Gering, Jon C.

50

FEDERAL LOAN SERVICERS A loan servicer is a company that handles the billing and other services on your federal student loan. The loan  

E-Print Network (OSTI)

(Correspondence) PO Box 7060 Utica, NY 13504-7060 1-800-826-4470 Web site: www.acs-education.com/ Aspire Resources Inc. PO Box 65970 West Des Moines, IA 50265-0970 1-855-475-3335 Web site: www-800-663-1662 Web site: www.MyCornerStoneLoan.org Direct Consolidation Loan Program US Department of Education Loan

Goldman, Steven A.

51

Intermediate-band Photometry of Type Ia Supernovae  

E-Print Network (OSTI)

We present optical light curves of five Type Ia supernovae (2002er, 2002fk, 2003cg, 2003du, 2003fk). The photometric observations were performed in a set of intermediate-band filters. SNe 2002er, 2003du appear to be normal SN Ia events with similar light curve shapes, while SN 2003kf shows the behavior of a brighter SN Ia with slower decline rate after maximum. The light curves of SN 2003cg is unusual; they show a fast rise and dramatic decline near maximum and do not display secondary peak at longer wavelengths during 15-30 days after maximum light. This suggests that SN 2003cg is likely to be an intrinsically subluminous, 91bg-like SN Ia. Exploration of SN Ia feature lines through intermediate-band photometry is briefly discussed.

Wang, X; Zhang, T; Li, Z; Wang, Xiaofeng; Zhou, Xu; Zhang, Tianmeng; Li, Zongwei

2004-01-01T23:59:59.000Z

52

Visualizing Type Ia Supernova Explosions at NERSC  

NLE Websites -- All DOE Office Websites (Extended Search)

Supernova Explosions Supernova Explosions Visualizing Type Ia Supernova Explosions Childs1a-Supernovasm.png Deep inside a dying star in a galaxy far, far away, a carbon fusion flame ignites. Ignition may happen in the middle or displaced slightly to one side, but this simulation explores the consequences of central ignition. In a localized hot spot, represented here by a deformed sphere with an average radius of 100 km, carbon is assumed to have already fused to iron, producing hot ash (~10 billion K) with a density about 20% less than its surroundings. As the burning progresses, this hot buoyant ash rises up and interacts with cold fuel. Rayleigh-Taylor fingers give rise to shear and turbulence, which interacts with the flame, causing it to move faster. In about 2 seconds, the energy released blows the entire white dwarf star up,

53

Theorie des langages Theorie des langages et  

E-Print Network (OSTI)

compilation Th´eorie des langages et compilation Structure d'un compilateur Analyse lexicale Analyse compilation Th´eorie des langages et compilation Structure d'un compilateur Analyse lexicale AnalyseTh´eorie des langages Th´eorie des langages et compilation Elise Bonzon http

Bonzon, Elise

54

UMore Ph IA CR Report 7-8-10.pdf  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

PHASE IA ARCHAEOLOGICAL AND PHASE IA ARCHAEOLOGICAL AND ARCHITECTURAL HISTORY SURVEY FOR THE UMORE PARK RESEARCH WIND TURBINE PROJECT, DAKOTA COUNTY, MINNESOTA SHPO File No. Pending Client No. Pending The 106 Group Project No. 10-18 Submitted to: Barr Engineering Company 4700 West 77th Street Minneapolis, MN 55435-4803 Submitted by: The 106 Group Ltd. The Dacotah Building 370 Selby Avenue St. Paul, MN 55102 Principal Investigators: AnneKetz, M.A., RPA Greg Mathis, M.C.R.P. Report Authors: Mark Doperalski, B.S. Miranda Van Vleet, M.H.P July 2010 UMore Park Wind Turbine Project Phase IA Archaeological and Architectural History Survey Page i MANAGEMENT SUMMARY During May of 2010, The 106 Group Ltd. (106 Group) conducted a Phase IA archaeological and architectural history survey for the University of Minnesota Outreach, Research, and

55

CIRCUMSTELLAR ABSORPTION IN DOUBLE DETONATION TYPE Ia SUPERNOVAE  

SciTech Connect

Upon formation, degenerate He core white dwarfs are surrounded by a radiative H-rich layer primarily supported by ideal gas pressure. In this Letter, we examine the effect of this H-rich layer on mass transfer in He+C/O double white dwarf binaries that will eventually merge and possibly yield a Type Ia supernova (SN Ia) in the double detonation scenario. Because its thermal profile and equation of state differ from the underlying He core, the H-rich layer is transferred stably onto the C/O white dwarf prior to the He core's tidal disruption. We find that this material is ejected from the binary system and sweeps up the surrounding interstellar medium hundreds to thousands of years before the SN Ia. The close match between the resulting circumstellar medium profiles and values inferred from recent observations of circumstellar absorption in SNe Ia gives further credence to the resurgent double detonation scenario.

Shen, Ken J. [Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720 (United States); Guillochon, James [Department of Astronomy and Astrophysics, University of California, Santa Cruz, CA 95064 (United States); Foley, Ryan J., E-mail: kenshen@astro.berkeley.edu [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States)

2013-06-20T23:59:59.000Z

56

Abstract IA14: Functional genomics and cancer vulnerabilities  

Science Journals Connector (OSTI)

...Cancer Research. November 2014 meeting-abstract Genomics Genomics: Oral Presentations - Invited Abstracts Abstracts...2013; San Diego, CA Abstract IA14: Functional genomics and cancer vulnerabilities William C. Hahn Dana-Farber...

William C. Hahn

2014-11-01T23:59:59.000Z

57

EARLY EMISSION FROM TYPE Ia SUPERNOVAE  

SciTech Connect

A unique feature of deflagration-to-detonation (DDT) white dwarf explosion models of supernovae of type Ia is the presence of a strong shock wave propagating through the outer envelope. We consider the early emission expected in such models, which is produced by the expanding shock-heated outer part of the ejecta and precedes the emission driven by radioactive decay. We expand on earlier analyses by considering the modification of the pre-detonation density profile by the weak shocks generated during the deflagration phase, the time evolution of the opacity, and the deviation of the post-shock equation of state from that obtained for radiation pressure domination. A simple analytic model is presented and shown to provide an acceptable approximation to the results of one-dimensional numerical DDT simulations. Our analysis predicts a {approx}10{sup 3} s long UV/optical flash with a luminosity of {approx}1 to {approx}3 Multiplication-Sign 10{sup 39} erg s{sup -1}. Lower luminosity corresponds to faster (turbulent) deflagration velocity. The luminosity of the UV flash is predicted to be strongly suppressed at t > t{sub drop} {approx} 1 hr due to the deviation from pure radiation domination.

Rabinak, Itay; Waxman, Eli [Department of Particle Physics and Astrophysics, Weizmann Institute of Science, Rehovot 76100 (Israel); Livne, Eli, E-mail: itay.rabinak@weizmann.ac.il [Racah Institute of Physics, Hebrew University, Jerusalem (Israel)

2012-09-20T23:59:59.000Z

58

The 1.05-?m feature in the spectrum of the Type Ia supernova 1994D: He in SNe Ia?  

Science Journals Connector (OSTI)

......SNe Ia). Although the agreed basic scenario is thermonuclear fusion within a white dwarf (WD), the process leading...a pressure wave into the WD which then triggers thermonuclear fusion in the core. In this scenario, explosion can......

P. A. Mazzali; L. B. Lucy

1998-04-01T23:59:59.000Z

59

Simulations of Turbulent Thermonuclear Burning in Type Ia Supernovae  

E-Print Network (OSTI)

Type Ia supernovae have recently received considerable attention because it appears that they can be used as "standard candles" to measure cosmic distances out to billions of light years away from us. Observations of type Ia supernovae seem to indicate that we are living in a universe that started to accelerate its expansion when it was about half its present age. These conclusions rest primarily on phenomenological models which, however, lack proper theoretical understanding, mainly because the explosion process, initiated by thermonuclear fusion of carbon and oxygen into heavier elements, is difficult to simulate even on supercomputers. Here, we investigate a new way of modeling turbulent thermonuclear deflagration fronts in white dwarfs undergoing a type Ia supernova explosion. Our approach is based on a level set method which treats the front as a mathematical discontinuity and allows for full coupling between the front geometry and the flow field. New results of the method applied to the problem of type Ia supernovae are obtained. It is shown that in 2-D with high spatial resolution and a physically motivated subgrid scale model for the nuclear flames numerically "converged" results can be obtained, but for most initial conditions the stars do not explode. In contrast, simulations in 3-D, do give the desired explosions and many of their properties, such as the explosion energies, lightcurves and nucleosynthesis products, are in very good agreement with observed type Ia supernovae.

W. Hillebrandt; M. Reinecke; W. Schmidt; F. K. Roepke; C. Travaglio; J. C. Niemeyer

2004-05-11T23:59:59.000Z

60

Type Ia Supernovae Yielding Distances with 3-4% Precision  

E-Print Network (OSTI)

The luminosities of Type Ia supernovae (SN), the thermonuclear explosions of white dwarf stars, vary systematically with their intrinsic color and light-curve decline rate. These relationships have been used to calibrate their luminosities to within ~0.14-0.20 mag from broadband optical light curves, yielding individual distances accurate to ~7-10%. Here we identify a subset of SN Ia that erupt in environments having high ultraviolet surface brightness and star-formation surface density. When we apply a steep model extinction law, these SN can be calibrated to within ~0.065-0.075 mag, corresponding to ~3-4% in distance -- the best yet with SN Ia by a substantial margin. The small scatter suggests that variations in only one or two progenitor properties account for their light-curve-width/color/luminosity relation.

Kelly, Patrick L; Burke, David L; Hicken, Malcolm; Ganeshalingam, Mohan; Zheng, Weikang

2014-01-01T23:59:59.000Z

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


61

Signatures of A Companion Star in Type Ia Supernovae  

E-Print Network (OSTI)

While type Ia Supernovae (SNe Ia) have been used as precise cosmological distance indicators, their progenitor systems remain unresolved. One of the key questions is if there is a non-degenerate companion star at the time of a thermonuclear explosion of a white dwarf (WD). In this paper, we investigate if an interaction between the SN ejecta and the companion star may result in observable footprints around the maximum brightness and thereafter, by performing multi-dimensional radiation transfer simulations based on hydrodynamic simulations of the interaction. We find that such systems result in variations in various observational characteristics due to different viewing directions, while the predicted behaviors (redder and fainter for the companion direction) are opposite to what were suggested by the previous study. The variations are generally modest and within observed scatters. However, the model predicts trends between some observables different from observationally derived, thus a large sample of SNe Ia...

Maeda, Keiichi; Shigeyama, Toshikazu

2014-01-01T23:59:59.000Z

62

Double degenerates and progenitors of supernovae type Ia  

E-Print Network (OSTI)

We report on systematic radial velocity surveys for white dwarf - white dwarf binaries (double degenerates - DDs) including SPY (ESO Supernovae Ia progenitor survey) recently carried out at the VLT. A large sample of DD will allow us to put strong constrains on the phases of close binary evolution of the progenitor systems and to perform an observational test of the DD scenario for supernovae of type Ia. We explain how parameters of the binaries can be derived from various methods. Results for a sample of DDs are presented and discussed.

R. Napiwotzki; L. Yungelson; G. Nelemans; T. R. Marsh; B. Leibundgut; A. Renzini; D. Homaier; D. Koester; S. Moehler; N. Christlieb; D. Reimers; H. Drechsel; U. Heber; C. Karl; E. -M. Pauli

2004-03-25T23:59:59.000Z

63

Search for double degenerate progenitors of supernovae type Ia with SPY  

E-Print Network (OSTI)

We report on a large survey for double degenerate (DD) binaries as potential progenitors of type Ia supernovae with the UVES spectrograph at the ESO VLT (ESO SN Ia Progenitor surveY - SPY).

R. Napiwotzki; H. Drechsel; U. Heber; C. Karl; E. -M. Pauli; N. Christlieb; H. -J. Hagen; D. Reimers; D. Koester; S. Moehler; D. Homeier; B. Leibundgut; A. Renzini; T. R. Marsh; G. Nelemans; L. Yungelson

2002-10-07T23:59:59.000Z

64

Spectral Observations and Analyses of Low-Redshift Type Ia Supernovae  

E-Print Network (OSTI)

1.3.2 Thermonuclear Supernovae . . . . . . . . 1.4 Why WriteIa are the result of thermonuclear explosions of C/O whiteIa are the result of thermonuclear explosions of C/O white

Silverman, Jeffrey Michael

2011-01-01T23:59:59.000Z

65

INDECOMPOSABLE RACKS OF ORDER p 2 MAT IAS GRA  

E-Print Network (OSTI)

INDECOMPOSABLE RACKS OF ORDER p 2 MAT ?? IAS GRA ? NA Abstract. We classify indecomposable racks order is trivial. 1. Introduction Racks and quandles have been considered by G. Wraith and J. Conway categories, one is immediately led to the notion of a rack. On the other hand, in [ESS, EGS, S] and [LYZ1

Graña, Matías

66

INCOMPLETE CARBON-OXYGEN DETONATION IN TYPE Ia SUPERNOVAE  

SciTech Connect

Incomplete carbon-oxygen detonation with reactions terminating after burning of C{sup 12} in the leading C{sup 12} + C{sup 12} reaction (C-detonation) may occur in the low-density outer layers of white dwarfs exploding as Type Ia supernovae (SNe Ia). Previous studies of carbon-oxygen detonation structure and stability at low densities were performed under the assumption that the velocity of a detonation wave is derived from complete burning of carbon and oxygen to iron. In fact, at densities {rho} {<=} 10{sup 6} g cm{sup -3} the detonation in SNe Ia may release less than a half of the available nuclear energy. In this paper, we study basic properties of such detonations. We find that the length of an unsupported steady-state C-detonation is {approx_equal}30-100 times greater than previously estimated and that the decreased energy has a drastic effect on the detonation stability. In contrast to complete detonations which are one-dimensionally stable, C-detonations may be one-dimensionally unstable and propagate by periodically re-igniting themselves via spontaneous burning. The re-ignition period at {rho} {<=} 10{sup 6} g cm{sup -3} is estimated to be greater than the timescale of an SN Ia explosion. This suggests that propagation and quenching of C-detonations at these densities could be affected by the instability. Potential observational implications of this effect are discussed.

Dominguez, Inma [Departamento de Fisica Teorica y del Cosmos, University of Granada, 18071 Granada (Spain); Khokhlov, Alexei [Department of Astronomy and Astrophysics and the Enrico Fermi Institute, University of Chicago, Chicago, IL 60637 (United States)

2011-04-01T23:59:59.000Z

67

The EqIA Publishing Template Impact Assessment Summary  

E-Print Network (OSTI)

The EqIA Publishing Template Impact Assessment Summary 1. Name of policy, function or service. Bedgebury 5 year strategy and development plan. This is a partial assessment. 2. Purpose and aims with ETWF: Sustainable Resource, Climate Change, Natural Environment, Quality of Life, Business and Markets

68

HOSPITALITY AND TOURISM MANAGEMENT MAJOR Virgu1iaTech  

E-Print Network (OSTI)

Hospitality Facilities Planning and Methods I (3) Management (3) #HTM 3484 Socio-Cultural Impacts of Tourism 4414 Food and Beverage Management (Pre: HTM 3414) * #HTM 4464 Human Resources Management in HospHOSPITALITY AND TOURISM MANAGEMENT MAJOR Virgu1iaTech Panplil College of BusIness Department

Virginia Tech

69

Circumstellar interaction of the type Ia supernova 2002ic  

Science Journals Connector (OSTI)

......with arguments in favour of a high-energy SN Ia event in this case, raises...WD explosion with a high kinetic energy of ejecta. The SN 1.5 origin of...2002ic-like events requires an accurate energy audit, for which the direct detection......

N. N. Chugai; R. A. Chevalier; P. Lundqvist

2004-12-01T23:59:59.000Z

70

Thermonuclear supernova models, and observations of Type Ia supernovae  

E-Print Network (OSTI)

In this paper, we review the present state of theoretical models of thermonuclear supernovae, and compare their predicitions with the constraints derived from observations of Type Ia supernovae. The diversity of explosion mechanisms usually found in one-dimensional simulations is a direct consequence of the impossibility to resolve the flame structure under the assumption of spherical symmetry. Spherically symmetric models have been successful in explaining many of the observational features of Type Ia supernovae, but they rely on two kinds of empirical models: one that describes the behaviour of the flame on the scales unresolved by the code, and another that takes account of the evolution of the flame shape. In contrast, three-dimensional simulations are able to compute the flame shape in a self-consistent way, but they still need a model for the propagation of the flame in the scales unresolved by the code. Furthermore, in three dimensions the number of degrees of freedom of the initial configuration of the white dwarf at runaway is much larger than in one dimension. Recent simulations have shown that the sensitivity of the explosion output to the initial conditions can be extremely large. New paradigms of thermonuclear supernovae have emerged from this situation, as the Pulsating Reverse Detonation. The resolution of all these issues must rely on the predictions of observational properties of the models, and their comparison with current Type Ia supernova data, including X-ray spectra of Type Ia supernova remnants.

E. Bravo; C. Badenes; D. Garcia-Senz

2004-12-07T23:59:59.000Z

71

t-analogues des oprateurs d'crantage associs aux q-caractres  

Science Journals Connector (OSTI)

......a-ra) u i,a ra t Vra i,aqi - 1 ( 2.13) qui ne fait intervenir que des mon^omes de i-poids wti(m ) = a C ui,a(m ) wti(m). Consid erons une combinaison lin eaire qui s'annule m Bi m(t)Ei(m) + m A-Bi m(t)m......

David Hernandez

2003-01-01T23:59:59.000Z

72

An Analysis of Department of Defense Instruction 8500.2 'Information Assurance (IA) Implementation.'  

SciTech Connect

The Department of Defense (DoD) provides its standard for information assurance in its Instruction 8500.2, dated February 6, 2003. This Instruction lists 157 'IA Controls' for nine 'baseline IA levels.' Aside from distinguishing IA Controls that call for elevated levels of 'robustness' and grouping the IA Controls into eight 'subject areas' 8500.2 does not examine the nature of this set of controls, determining, for example, which controls do not vary in robustness, how this set of controls compares with other such sets, or even which controls are required for all nine baseline IA levels. This report analyzes (1) the IA Controls, (2) the subject areas, and (3) the Baseline IA levels. For example, this report notes that there are only 109 core IA Controls (which this report refers to as 'ICGs'), that 43 of these core IA Controls apply without variation to all nine baseline IA levels and that an additional 31 apply with variations. This report maps the IA Controls of 8500.2 to the controls in NIST 800-53 and ITGI's CoBIT. The result of this analysis and mapping, as shown in this report, serves as a companion to 8500.2. (An electronic spreadsheet accompanies this report.)

Campbell, Philip LaRoche

2012-01-01T23:59:59.000Z

73

Beispiele des Regelverlaufs  

Science Journals Connector (OSTI)

Die in den Abb. 34 bis 37 wiedergegebenen Diagramme1) des Versuehsreglers Abb. 1 zeigen, da sich stets die Regelperiade in ihrer Gesamtheit innerhalb des Gebietes abspielt, in dem die Bremswirkung effektiv ist. ...

A. Watzinger; Leif J. Hanssen

1923-01-01T23:59:59.000Z

74

Learning from the scatter in type Ia supernovae  

SciTech Connect

Type Ia Supernovae are standard candles so their mean apparent magnitude has been exploited to learn about the redshift-distance relationship. Besides intrinsic scatter in this standard candle, additional scatter is caused by gravitational magnification by large scale structure. Here we probe the dependence of this dispersion on cosmological parameters and show that information about the amplitude of clustering, {sigma}{sub 8}, is contained in the scatter. In principle, it will be possible to constrain {sigma}{sub 8} to within 5% with observations of 2000 Type Ia Supernovae. We identify three sources of systematic error - evolution of intrinsic scatter, baryon contributions to lensing, and non-Gaussianity of lensing - which will make this measurement difficult.

Dodelson, Scott [Particle Astrophysics Center, Fermi National Accelerator Laboratory, Batavia, Illinois 60510-0500 (United States); Department of Astronomy and Astrophysics, University of Chicago, Chicago, Illinois 60637-1433 (United States); Vallinotto, Alberto [Particle Astrophysics Center, Fermi National Accelerator Laboratory, Batavia, Illinois 60510-0500 (United States); Department of Physics, The University of Chicago, Chicago, Illinois 60637-1433 (United States)

2006-09-15T23:59:59.000Z

75

RADIOACTIVELY POWERED RISING LIGHT CURVES OF TYPE Ia SUPERNOVAE  

SciTech Connect

The rising luminosity of the recent, nearby supernova 2011fe shows a quadratic dependence with time during the first Almost-Equal-To 0.5-4 days. In addition, studies of the composite light curves formed from stacking together many Type Ia supernovae (SNe Ia) have found similar power-law indices for the rise, but may also show some dispersion that may indicate diversity. I explore what range of power-law rises are possible due to the presence of radioactive material near the surface of the exploding white dwarf (WD). I summarize what constraints such a model places on the structure of the progenitor and the distribution and velocity of ejecta. My main conclusion is that for the inferred explosion time for SN 2011fe, its rise requires an increasing mass fraction X {sub 56} Almost-Equal-To (4-6) Multiplication-Sign 10{sup -2} of {sup 56}Ni distributed between a depth of Almost-Equal-To 10{sup -2} and 0.3 M {sub Sun} below the WD's surface. Radioactive elements this shallow are not found in simulations of a single C/O detonation. Scenarios that may produce this material include helium-shell burning during a double-detonation ignition, a gravitationally confined detonation, and a subset of deflagration to detonation transition models. In general, the power-law rise can differ from quadratic depending on the details of the velocity, density, and radioactive deposition gradients in a given event. Therefore, comparisons of this work with observed bolometric rises of SNe Ia would place strong constraints on the properties of the shallow outer layers, providing important clues for identifying the elusive progenitors of SNe Ia.

Piro, Anthony L., E-mail: piro@caltech.edu [Theoretical Astrophysics, California Institute of Technology, 1200 East California Boulevard, M/C 350-17, Pasadena, CA 91125 (United States)

2012-11-10T23:59:59.000Z

76

The Diversity of Variations in the Spectra of Type Ia Supernovae  

E-Print Network (OSTI)

for the degree of DOCTOR OF PHILOSOPHY Approved by: Chair of Committee, Lifan Wang Committee Members, Nicholas Suntze George Kattawar Sean McDeavitt Head of Department, George R. Welch August 2012 Major Subject: Physics iii ABSTRACT The Diversity... of Variations in the Spectra of Type Ia Supernovae. (August 2012) Andrew James Wagers, B.A., Berea College; M.S., Stephen F. Austin State University Chair of Advisory Committee: Dr. Lifan Wang Type Ia supernovae (SNe Ia) are currently the best probe...

Wagers, Andrew James

2012-10-19T23:59:59.000Z

77

Experto Universitario Java Enterprise 2012-2013 Depto. Ciencia de la Computacin e IA  

E-Print Network (OSTI)

Experto Universitario Java Enterprise © 2012-2013 Depto. Ciencia de la Computación e IA Lenguaje Lenguaje Java Avanzado © 2012-2013 Depto. Ciencia de la Computación e IA Lenguaje Java 2 Índice. Ciencia de la Computación e IA Lenguaje Java 3 Java · Java es un lenguaje OO creado por Sun Microsystems

Escolano, Francisco

78

Experto Universitario Java Enterprise 2012-2013 Depto. Ciencia de la Computacin e IA  

E-Print Network (OSTI)

Experto Universitario Java Enterprise © 2012-2013 Depto. Ciencia de la Computación e IA Lenguaje Avanzado © 2012-2013 Depto. Ciencia de la Computación e IA Depuración y logs - 2 · El depurador de Eclipse Enterprise Lenguaje Java Avanzado © 2012-2013 Depto. Ciencia de la Computación e IA Depuración y logs - 3 El

Escolano, Francisco

79

Teor'ia de Grupos y Mec'anica Qu'antica Luis A. Seco  

E-Print Network (OSTI)

determinado por el Hamiltoniano de la energ'ia, un operador que, actuando sobre una funci'on /(x 1 ; : : : ; xTeor'ia de Grupos y Mec'anica Qu'antica Luis A. Seco Universidad de Toronto. Notas del curso; Teor'ia de Grupos y Mec'anica Cu'antica, L. Seco. U.I.M.P. La Coru~na, 27 Junio -- 1 Julio, 1994

Seco, Luis A.

80

Turbulence-Flame Interactions in Type Ia Supernovae  

E-Print Network (OSTI)

The large range of time and length scales involved in type Ia supernovae (SN Ia) requires the use of flame models. As a prelude to exploring various options for flame models, we consider, in this paper, high-resolution three-dimensional simulations of the small-scale dynamics of nuclear flames in the supernova environment in which the details of the flame structure are fully resolved. The range of densities examined, 1 to $8 \\times 10^7$ g cm$^{-3}$, spans the transition from the laminar flamelet regime to the distributed burning regime where small scale turbulence disrupts the flame. The use of a low Mach number algorithm facilitates the accurate resolution of the thermal structure of the flame and the inviscid turbulent kinetic energy cascade, while implicitly incorporating kinetic energy dissipation at the grid-scale cutoff. For an assumed background of isotropic Kolmogorov turbulence with an energy characteristic of SN Ia, we find a transition density between 1 and $3 \\times 10^7$ g cm$^{-3}$ where the nature of the burning changes qualitatively. By $1 \\times 10^7$ g cm$^{-3}$, energy diffusion by conduction and radiation is exceeded, on the flame scale, by turbulent advection. As a result, the effective Lewis Number approaches unity. That is, the flame resembles a laminar flame, but is turbulently broadened with an effective diffusion coefficient, $D_T \\sim u' l$, where $u'$ is the turbulent intensity and $l$ is the integral scale. For the larger integral scales characteristic of a real supernova, the flame structure is predicted to become complex and unsteady. Implications for a possible transition to detonation are discussed.

A. J. Aspden; J. B. Bell; M. S. Day; S. E. Woosley; M. Zingale

2008-11-17T23:59:59.000Z

Note: This page contains sample records for the topic "des moines ia" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
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We encourage you to perform a real-time search of NLEBeta
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81

The Recurrent Nova U Scorpii - A Type Ia Supernova Progenitor  

E-Print Network (OSTI)

We derive the mass of the white dwarf in the eclipsing recurrent nova U Sco from the radial velocity semi-amplitudes of the primary and secondary stars. Our results give a high white dwarf mass of M_1 = 1.55 \\pm 0.24M_\\odot, consistent with the thermonuclear runaway model of recurrent nova outbursts. We confirm that U Sco is the best Type Ia supernova progenitor known, and predict that the time to explosion is within ~700,000 years.

T. D. Thoroughgood; V. S. Dhillon; S. P. Littlefair; T. R. Marsh; D. A. Smith

2001-09-28T23:59:59.000Z

82

Tension in the Recent Type Ia Supernovae Datasets  

E-Print Network (OSTI)

In the present work, we investigate the tension in the recent Type Ia supernovae (SNIa) datasets Constitution and Union. We show that they are in tension not only with the observations of the cosmic microwave background (CMB) anisotropy and the baryon acoustic oscillations (BAO), but also with other SNIa datasets such as Davis and SNLS. Then, we find the main sources responsible for the tension. Further, we make this more robust by employing the method of random truncation. Based on the results of this work, we suggest two truncated versions of the Union and Constitution datasets, namely the UnionT and ConstitutionT SNIa samples, whose behaviors are more regular.

Hao Wei

2010-04-07T23:59:59.000Z

83

Aerodynamik des Rotors  

Science Journals Connector (OSTI)

Der Rotor steht am Anfang der Wirkungskette einer Windkraftanlage. Seine aerodynamischen und dynamischen Eigenschaften sind deshalb in mehrfacher Hinsicht prgend fr das gesamte System. Die Fhigkeit des Roto...

Dipl.-Ing. Erich Hau

2003-01-01T23:59:59.000Z

84

Aerodynamik des Rotors  

Science Journals Connector (OSTI)

Der Rotor steht am Anfang der Wirkungskette einer Windkraftanlage. Seine aerodynamischen und dynamischen Eigenschaften sind deshalb in mehrfacher Hinsicht prgend fr das gesamte System. Die Fhigkeit des Roto...

2008-01-01T23:59:59.000Z

85

KPD1930+2752 - a candidate Type Ia supernova progenitor  

E-Print Network (OSTI)

We present spectra of the pulsating sdB star KPD1930+2752 which confirm that this star is a binary. The radial velocities measured from the H-alpha and HeI6678 spectral lines vary sinusoidally with the same period (2h 17m) as the ellipsoidal variability seen by Billeres et al. (2000). The amplitude of the orbital motion (349.3+-2.7 km/s) combined with the canonical mass for sdB stars (0.5 solar masses) implies a total mass for the binary of 1.47+-0.01 solar masses The unseen companion star is almost certainly a white dwarf star. The binary will merge within about 200 million years due to gravitational wave radiation. The accretion of helium and other elements heavier than hydrogen onto the white dwarf which then exceeds the Chandrasekhar mass (1.4 solar masses) is a viable model for the cause of Type Ia supernovae. KPD1930+2752 is the first star to be discovered which is a good candidate for the progenitor of a Type Ia supernova of this type which will merge on an astrophysically interesting timescale.

P. F. L. Maxted; T. R. Marsh; R. C. North

2000-07-18T23:59:59.000Z

86

Search for progenitors of supnernovae type Ia with SPY  

E-Print Network (OSTI)

We have started a large survey for double degenerate (DD) binaries as potential progenitors of type Ia supernovae with the UVES spectrograph at the ESO VLT (ESO SN Ia Progenitor surveY - SPY). About 400 white dwarfs were checked for radial velocity variations during the first 15 months of this project, twice the number of white dwarfs investigated during the last 20 years. We give an overview of the SPY project and present first results Fifty four new DDs have been discovered, seven of them double lined (only 18 and 6 objects of these groups were known before, respectively). The final sample is expected to contain 150 to 200 DDs. Eight new pre-cataclysmic binaries were also detected. SPY is the first DD survey which encompasses also non-DA white dwarfs. SPY produces an immense, unique sample of very high resolution white dwarf spectra, which provides a lot of spin-off opportunities. We describe our projects to exploit the SPY sample for the determination of basic parameters, kinematics, and rotational velocities of white dwarfs. A catalogue with a first subset of our white dwarf data has already been published by Koester et al. 2001.

R. Napiwotzki; N. Christlieb; H. Drechsel; H. -J. Hagen; U. Heber; D. Homeier; C. Karl; D. Koester; B. Leibundgut; T. R. Marsh; S. Moehler; G. Nelemans; E. -M. Pauli; D. Reimers; A. Renzini; L. Yungelson

2002-03-09T23:59:59.000Z

87

NJ WY AK AL CA AR CO CT DE FL GA HI ID KS IL IN IA IA KY LA  

Gasoline and Diesel Fuel Update (EIA)

0.00-1.99 0.00-1.99 2.00-2.99 3.00-3.99 4.00-4.99 5.00-5.99 6.00-6.99 7.00+ NJ WY AK AL CA AR CO CT DE FL GA HI ID KS IL IN IA IA KY LA ME MI MA MD MN MS MT MO NE ND OH NV NM NY NH NC OK OR PA RI SC SD TN TX UT VT WA WV WI AZ VA DC 0.00-1.99 2.00-2.99 3.00-3.99 4.00-4.99 5.00-5.99 6.00-6.99 7.00+ 18. Average Price of Natural Gas Delivered to U.S. Onsystem Industrial Consumers, 1996 (Dollars per Thousand Cubic Feet) Figure 19. Average Price of Natural Gas Delivered to U.S. Electric Utilities, 1996 (Dollars per Thousand Cubic Feet) Figure Sources: Federal Energy Regulatory Commission (FERC), Form FERC-423, "Monthly Report of Cost and Quality of Fuels for Electric Plants," and Energy Information Administration (EIA), Form EIA-176, "Annual Report of Natural and Supplemental Gas Supply and Disposition." Note: In 1996, consumption of natural gas for agricultural use

88

Search for double degenerate progenitors of supernovae type Ia with SPY  

E-Print Network (OSTI)

We report on a large survey for double degenerate (DD) binaries as potential progenitors of type Ia supernovae with the UVES spectrograph at the ESO VLT (SN Ia Progenitor surveY - SPY). About 560 white dwarfs were checked for radial velocity variations until now. Ninety new DDs have been discovered, including short period systems with masses close to the Chandrasekhar mass.

R. Napiwotzki; N. Christlieb; H. Drechsel; H. -J. Hagen; U. Heber; D. Homeier; C. Karl; D. Koester; B. Leibundgut; T. R. Marsh; S. Moehler; G. Nelemans; E. -M. Pauli; D. Reimers; A. Renzini; L. Yungelson

2002-10-29T23:59:59.000Z

89

Analytical Expressions For Light-Curves Of Ordinary And Superluminous Supernovae Type Ia  

E-Print Network (OSTI)

Ordinary supernovae of type Ia (SNeIa) may be produced by the thermonuclear explosion of white dwarfs (WDs), which after their nascence in proto-planetary nebulae accrete fall-back matter and approach the Chandrasekhar mass limit. If the detonation continues into the fall-back layer and/or if the SNIa debris collide with it, they may produce a super Chandrasekhar SNIa. A few underlying physical assumptions of such model yield a very simple master formula that reproduces quite well the bolometric light-curves of both ordinary and supeluminous SNeIa. Other main properties of SNeIa, including the empirical 'brighter-slower' Philipps' relation that was used to standardize ordinary SNeIa as distance indicators and led to the discovery of the accelerating expansion of the universe are also reproduced.

Shlomo Dado; Arnon Dar

2014-02-06T23:59:59.000Z

90

Type Ia supernova rate studies from the SDSS-II Supernova Study  

SciTech Connect

The author presents new measurements of the type Ia SN rate from the SDSS-II Supernova Survey. The SDSS-II Supernova Survey was carried out during the Fall months (Sept.-Nov.) of 2005-2007 and discovered {approx} 500 spectroscopically confirmed SNe Ia with densely sampled (once every {approx} 4 days), multi-color light curves. Additionally, the SDSS-II Supernova Survey has discovered several hundred SNe Ia candidates with well-measured light curves, but without spectroscopic confirmation of type. This total, achieved in 9 months of observing, represents {approx} 15-20% of the total SNe Ia discovered worldwide since 1885. The author describes some technical details of the SN Survey observations and SN search algorithms that contributed to the extremely high-yield of discovered SNe and that are important as context for the SDSS-II Supernova Survey SN Ia rate measurements.

Dilday, Benjamin; /Chicago U.

2008-08-01T23:59:59.000Z

91

Type Ia supernovae selection and forecast of cosmology constraints for the Dark Energy Survey  

Science Journals Connector (OSTI)

We present the results of a study of selection criteria to identify Type Ia supernovae photometrically in a simulated mixed sample of Type Ia supernovae and core collapse supernovae. The simulated sample is a mockup of the expected results of the Dark Energy Survey. Fits to the \\{MLCS2k2\\} and SALT2 Type Ia supernova models are compared and used to help separate the Type Ia supernovae from the core collapse sample. The Dark Energy Task Force Figure of Merit (modified to include core collapse supernovae systematics) is used to discriminate among the various selection criteria. This study of varying selection cuts for Type Ia supernova candidates is the first to evaluate core collapse contamination using the Figure of Merit. Different factors that contribute to the Figure of Merit are detailed. With our analysis methods, both SALT2 and \\{MLCS2k2\\} Figures of Merit improve with tighter selection cuts and higher purities, peaking at 98% purity.

Eda Gjergo; Jefferson Duggan; John D. Cunningham; Steve Kuhlmann; Rahul Biswas; Eve Kovacs; Joseph P. Bernstein; Harold Spinka

2013-01-01T23:59:59.000Z

92

tude comparative des facults de mdecine en France: premiers rsultats  

Science Journals Connector (OSTI)

RsumContexte LAgence dvaluation de la recherche et de lenseignement suprieur (AERES) a effectu une premire analyse comparative des facults de mdecine, fonde la fois sur leurs performances en formation et en recherche. Les ressources humaines prises en compte sont les enseignants hospitalo-universitaires titulaires dune part et le nombre estim des tudiants en fonction du numerus clausus. Mthodes La performance en formation est estime sur les rsultats obtenus par les tudiants dune facult lexamen classant national (ECN) dentre en troisime cycle, fonds sur le rang de classement cet examen pendant 3 annes successives. Les activits de recherche sont estimes laide de plusieurs indicateurs: le score SIGAPS global de la facult calcul partir du nombre et de limpact factor des publications scientifiques ralises pendant 5 annes conscutives par les enseignants hospitalo-universitaires titulaires, le nombre de projets hospitaliers de recherche clinique (PHRC) nationaux financs pendant 3 annes conscutives dont ces enseignants sont les investigateurs principaux et le nombre dunits de recherche labllises par le CNRS ou lINSERM quils dirigent. Rsultats Les facults de mdecine se caractrisent par des diffrences importantes en personnel hospitalo-universitaire et leurs rsultats en formation et en recherche diffrent notablement. Un riche encadrement hospitalo-universitaire avec de nombreuses units de recherche labllises joue un rle important dans les performances en recherche; limpact sur la formation existe, mais la corrlation est statistiquement moins significative. Une cartographie des facults de mdecine a ainsi pu tre esquisse. Perspectives Lanalyse plus prcise des diffrences observes devrait permettre de mieux apprhender des recommandations damlioration. SummaryContext AERES has achieved the first comparative study of the French medical schools based on the analysis of both teaching performance and research activity. Methods The human resources considered in the evaluation are full-time, tenured, university hospital teaching staff (TUHT), professors or lecturers, and are meaningful only if the number of students is considered. The estimated number of students is based on the Numerus Clausus (NC), number of students allowed each year to enter in the second year of medical studies. Teaching performance of each faculty is based on the success of their students in a national ranking examination (Examen Classant National ECN), at the end of their second cycle of medical studies which allows them to choose, for their third specialising cycle of medical studies, the specialty and region of practice. Research activity is estimated on the SIGAPS score of the medical school based on the number and impact factor of the scientific papers produced for five years running by the full-time professors and lecturers of each medical school, the number of national clinical research projects (PHRC) they have conducted during the three past years and the number of research units headed by these professors labelled by CNRS and INSERM. Results French medical school characteristics are markedly different in the number of university-hospital teaching staff, teaching performances and research activities. Numerous teaching staff and labelled research units have a beneficial influence on research activity and teaching results. The impact on teaching results is less statistically significant than that on research activity. A medical school mapping is then outlined. Prospect More precise analysis of the observed differences between medical schools will allow propose recommendations.

Didier Rabineau; Jean-Franois Dhainaut

2010-01-01T23:59:59.000Z

93

Microsoft PowerPoint - IEEE IAS PES 102313.pptx  

NLE Websites -- All DOE Office Websites (Extended Search)

DOE's ARRA DOE's ARRA Smart Grid Program Steve Bossart, Senior Energy Analyst IEEE IAS/PES Pittsburgh Section October 23, 2013 ‹#› Topics * OE ARRA Smart Grid Program * OE ARRA Smart Grid Progress * Results and Case Studies * Life After ARRA Smart Grid ‹#› DOE OE ARRA Smart Grid Program ‹#› American Recovery and Reinvestment Act ($4.5B) * Smart Grid Investment Grants (99 projects) - $3.4 billion Federal; $4.7 billion private sector - > 800 PMUs covering almost 100% of transmission - ~ 8000 distribution automation circuits - > 15 million smart meters * Smart Grid Demonstration Projects (32 projects) - $685 million Federal; $1 billion private sector - 16 storage projects - 16 regional demonstrations Smart Grid ARRA Activities ‹#› Smart Grid investment from ARRA field projects

94

Type Ia Supernova: Burning and Detonation in the Distributed Regime  

E-Print Network (OSTI)

A simple, semi-analytic representation is developed for nuclear burning in Type Ia supernovae in the special case where turbulent eddies completely disrupt the flame. The speed and width of the ``distributed'' flame front are derived. For the conditions considered, the burning front can be considered as a turbulent flame brush composed of corrugated sheets of well-mixed flames. These flames are assumed to have a quasi-steady-state structure similar to the laminar flame structure, but controlled by turbulent diffusion. Detonations cannot appear in the system as long as distributed flames are still quasi-steady-state, but this condition is violated when the distributed flame width becomes comparable to the size of largest turbulent eddies. When this happens, a transition to detonation may occur. For current best estimates of the turbulent energy, the most likely density for the transition to detonation is in the range 0.5 - 1.5 x 10^7 g cm^{-3}.

S. E. Woosley

2007-09-26T23:59:59.000Z

95

Type Ia Supernova Hubble Residuals and Host-Galaxy Properties  

SciTech Connect

Kim et al. (2013) [K13] introduced a new methodology for determining peak- brightness absolute magnitudes of type Ia supernovae from multi-band light curves. We examine the relation between their parameterization of light curves and Hubble residuals, based on photometry synthesized from the Nearby Supernova Factory spec- trophotometric time series, with global host-galaxy properties. The K13 Hubble residual step with host mass is 0.013 ? 0.031 mag for a supernova subsample with data coverage corresponding to the K13 training; at ? 1?, the step is not significant and lower than previous measurements. Relaxing the data coverage requirement the Hubble residual step with host mass is 0.045 ? 0.026 mag for the larger sample; a calculation using the modes of the distributions, less sensitive to outliers, yields a step of 0.019 mag. The analysis of this article uses K13 inferred luminosities, as distinguished from previous works that use magnitude corrections as a function of SALT2 color and stretch param- eters: Steps at> 2? significance are found in SALT2 Hubble residuals in samples split by the values of their K13 x(1) and x(2) light-curve parameters. x(1) affects the light- curve width and color around peak (similar to the?m15 and stretch parameters), and x(2) affects colors, the near-UV light-curve width, and the light-curve decline 20 to 30 days after peak brightness. The novel light-curve analysis, increased parameter set, and magnitude corrections of K13 may be capturing features of SN Ia diversity arising from progenitor stellar evolution.

Nearby Supernova Factory; Kim, A. G.; Aldering, G.; Antilogus, P.; Aragon, C.; Bailey, S.; Baltay, C.; Bongard, S.; Buton, C.; Canto, A.; Cellier-Holzem, F.; Childress, M.; Chotard, N.; Copin, Y.; Fakhouri, H. K.; Feindt, U.; Fleury, M.; Gangler, E.; Greskovic, P.; Guy, J.; Kowalski, M.; Lombardo, S.; Nordin, J.; Nugent, P.; Pain, R.; Pecontal, E.; Pereira, R.; Perlmutter, S.; Rabinowitz, D.; Rigault, M.; Runge, K.; Saunders, C.; Scalzo, R.; Smadja, G.; Tao, C.; Thomas, R. C.; Weaver, B. A.

2014-01-17T23:59:59.000Z

96

A mutant of Escherichia coli defective in penicillin-binding protein 5 and lacking D-alanine carboxypeptidase IA.  

Science Journals Connector (OSTI)

...preparation of D-alanrne car- boxypeptidase IA of...IA, because a mutant defective in D-alanine carbox...both activities were defective or both were normal...residual D-alanine car- boxypeptidase IA activity...and to obtain a mutant defective in PBP-6 are in progress...

Y Nishimura; H Suzuki; Y Hirota; J T Park

1980-07-01T23:59:59.000Z

97

Home24, start-up base Berlin, est devenue en moins de 3 ans le leader de la vente en ligne de meubles et d'accessoires de maison en Allemagne (www.home24.de). Fonde dbut 2010, Home24 travaille en partenariat avec  

E-Print Network (OSTI)

Home24, start-up basée à Berlin, est devenue en moins de 3 ans le leader de la vente en ligne de meubles et d'accessoires de maison en Allemagne (www.home24.de). Fondée début 2010, Home24 travaille en 2012, Home24 est également présent en France, aux Pays-Bas et en Autriche. Dans le cadre de son

Halazonetis, Thanos

98

Stellar Populations and the White Dwarf Mass Function: Connections To Supernova Ia Luminosities  

E-Print Network (OSTI)

We discuss the luminosity function of SNe Ia under the assumption that recent evidence for dispersion in this standard candle is related to variations in the white dwarf mass function (WDMF) in the host galaxies. We develop a simple parameterization of the WDMF as a function of age of a stellar population and apply this to galaxies of different morphological types. We show that this simplified model is consistent with the observed WDMF of Bergeron et al. (1992) for the solar neighborhood. Our simple models predict that WDMF variations can produce a range of more than 1.8 mag in M$_B$(SN Ia), which is comparable to the observed value using the data of Phillips (1993) and van den Bergh (1996). We also predict a galaxy type dependence of M$_B$(SN Ia) under standard assumptions of the star formation history in these galaxies and show that M$_B$(SN Ia) can evolve with redshift. In principle both evolutionary and galaxy type corrections should be applied to recover the intrinsic range of M$_B$(SN Ia) from the observed values. Our current inadequate knowledge of the star formation history of galaxies coupled with poor physical understanding of the SN Ia mechanism makes the reliable estimation of these corrections both difficult and controversial. The predictions of our models combined with the observed galaxy and redshift correlations may have the power to discriminate between the Chandrasekhar and the sub-Chandrasekhar progenitor scenarios for SNe Ia.

Ted von Hippel; G. D. Bothun; R. A. Schommer

1997-06-11T23:59:59.000Z

99

Tension and Systematics in the Gold06 SnIa Dataset  

E-Print Network (OSTI)

The Gold06 SnIa dataset recently released in astro-ph/0611572 consists of five distinct subsets defined by the group or instrument that discovered and analyzed the corresponding data. These subsets are: the SNLS subset (47 SnIa), the HST subset (30 SnIa), the HZSST subset (41 SnIa), the SCP subset (26 SnIa) and the Low Redshift (LR) subset (38 SnIa). These subsets sum up to the 182 SnIa of the Gold06 dataset. We use Monte-Carlo simulations to study the statistical consistency of each one of the above subsets with the full Gold06 dataset. In particular, we compare the best fit $w(z)$ parameters (w_0,w_1) obtained by subtracting each one of the above subsets from the Gold06 dataset (subset truncation), with the corresponding best fit parameters (w^r_0,w^r_1) obtained by subtracting the same number of randomly selected SnIa from the same redshift range of the Gold06 dataset (random truncation). We find that the probability for (w^r_0,w^r_1)=(w_0,w_1) is large for the Gold06 minus SCP (Gold06-SCP) truncation but is less than 5% for the Gold06-SNLS, Gold06-HZSST and Gold06-HST truncations. This result implies that the Gold06 dataset is not statistically homogeneous. By comparing the values of the best fit (w_0,w_1) for each subset truncation we find that the tension among subsets is such that the SNLS and HST subsets are statistically consistent with each other and `pull' towards LCDM (w_0=-1,w_1=0) while the HZSST subset is statistically distinct and strongly `pulls' towards a varying w(z) crossing the line $w=-1$ from below (w_00). We also isolate six SnIa that are mostly responsible for this behavior of the HZSST subset.

S. Nesseris; L. Perivolaropoulos

2007-01-09T23:59:59.000Z

100

Minisymposium zur Erffnung des  

E-Print Network (OSTI)

Minisymposium zur Eröffnung des Carl von Carlowitz Zentrums für Nachhaltige Chemie Universitätsstra?e 31 93053 Regensburg werner.kunz@chemie.uni-regensburg.de www.uni-regensburg.de FAKULT?T F?R CHEMIE UND PHARMAZIE Einladung #12;Die Fakultät für Chemie und Pharmazie lädt ein zur Eröffnung des Carl von

Schubart, Christoph

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


101

Solar abundance of manganese: a case for the existence of near Chandrasekhar-mass Type Ia supernova progenitors  

E-Print Network (OSTI)

Context: Manganese is predominantly synthesised in Type Ia supernova (SN Ia) explosions. Owing to the entropy dependence of the Mn yield in explosive thermonuclear burning, SNe Ia involving near Chandrasekhar-mass white dwarfs (WDs) are predicted to produce Mn to Fe ratios significantly exceeding those of SN Ia explosions involving sub-Chandrasekhar mass primary WDs. Of all current supernova explosion models, only SN Ia models involving near-Chandrasekhar mass WDs produce [Mn/Fe] > 0.0. Aims: Using the specific yields for competing SN Ia scenarios, we aim to constrain the relative fractions of exploding near-Chandrasekhar mass to sub-Chandrasekhar mass primary WDs in the Galaxy. Methods: We extract the Mn yields from three-dimensional thermonuclear supernova simulations referring to different initial setups and progenitor channels. We then compute the chemical evolution of Mn in the Solar neighborhood, assuming SNe Ia are made up of different relative fractions of the considered explosion models. Results: We ...

Seitenzahl, Ivo R; Roepke, Friedrich K; Ruiter, Ashley J

2013-01-01T23:59:59.000Z

102

E-Print Network 3.0 - al disciplinamiento social Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

Universidad de Cantabria... moins, des lites conomiques et sociales locales (Mauro ... Source: Ecole Polytechnique, Centre de mathmatiques Collection: Mathematics 5...

103

Prdiction des conflits dans des systmes homme-machine.  

E-Print Network (OSTI)

??Prdiction des conflits dans le systmes homme-machine. Le travail fait partie de la recherche consacre des problmes d'interaction homme-machine et aux conflits entre l'homme (more)

Pizziol, Sergio

2013-01-01T23:59:59.000Z

104

INDECOMPOSABLE RACKS OF ORDER p2 MAT'IAS GRA"NA  

E-Print Network (OSTI)

INDECOMPOSABLE RACKS OF ORDER p2 MAT'IAS GRA"NA Abstract.We classify indecomposable racks of order p2(p a prime). There a of prime order is trivial. 1.Introduction Racks and quandles have

Graña, Matías

105

Structural studies of allosteric regulation in the class Ia Ribonucleotide reductase from Escherichia coli  

E-Print Network (OSTI)

Ribonucleotide reductase (RNR) converts ribonucleotides to deoxyribonucleotides, the building blocks for DNA replication and repair. The E. coli class Ia enzyme requires two subunits to catalyze the radical-based reduction ...

Zimanyi, Christina Marie

2013-01-01T23:59:59.000Z

106

Type Ia supernova rate at a redshift of ~;0.1  

SciTech Connect

We present the type Ia rate measurement based on two EROS supernova search campaigns (in 1999 and 2000). Sixteen supernovae identified as type Ia were discovered. The measurement of the detection efficiency, using a Monte Carlo simulation, provides the type Ia supernova explosion rate at a redshift {approx} 0.13. The result is 0.125{sub -0.034-0.028}{sup +0.044+0.028} h{sub 70}{sup 2} SNu where 1 SNu = 1 SN/10{sup 10} L{sub {circle_dot}}{sup B}/century. This value is compatible with the previous EROS measurement (Hardin et al. 2000), done with a much smaller sample, at a similar redshift. Comparison with other values at different redshifts suggests an evolution of the type Ia supernova rate.

Blanc, G.; Afonso, C.; Alard, C.; Albert, J.N.; Aldering, G.; Amadon, A.; Andersen, J.; Ansari, R.; Aubourg, E.; Balland, C.; Bareyre,P.; Beaulieu, J.P.; Charlot, X.; Conley, A.; Coutures, C.; Dahlen, T.; Derue, F.; Fan, X.; Ferlet, R.; Folatelli, G.; Fouque, P.; Garavini, G.; Glicenstein, J.F.; Goldman, B.; Goobar, A.; Gould, A.; Graff, D.; Gros,M.; Haissinski, J.; Hamadache, C.; Hardin, D.; Hook, I.M.; deKat, J.; Kent, S.; Kim, A.; Lasserre, T.; LeGuillou, L.; Lesquoy, E.; Loup, C.; Magneville, C.; Marquette, J.B.; Maurice, E.; Maury, A.; Milsztajn, A.; Moniez, M.; Mouchet, M.; Newberg, H.; Nobili, S.; Palanque-Delabrouille,N.; Perdereau, O.; Prevot, L.; Rahal, Y.R.; Regnault, N.; Rich, J.; Ruiz-Lapuente, P.; Spiro, M.; Tisserand, P.; Vidal-Madjar, A.; Vigroux,L.; Walton, N.A.; Zylberajch, S.

2004-05-11T23:59:59.000Z

107

~ VII -ATTiVIT EDILIZIE .. Servizio di Ateneo per lEnergIa  

E-Print Network (OSTI)

~ VII - ATTiVIT? EDILIZIE n'p. .' .. Servizio di Ateneo per lEnergIa - N AlJZ43 ········ - .·:tri

Di Pillo, Gianni

108

Infrastructure Assessment Mission: USACE Infrastructure Assessment (IA) Planning and Response Teams (PRTs) have two main  

E-Print Network (OSTI)

, and structural engineering applications; urban search & rescue (US&R) support; and water/wastewater) include pre- and post-declaration support for deploying an IA management cell, water/wastewater assessment

US Army Corps of Engineers

109

Gamma-rays from Type Ia supernova SN2014J  

E-Print Network (OSTI)

The whole set of INTEGRAL observations of type Ia supernova SN2014J, covering the period 16-162 days after the explosion has being analyzed. For spectral fitting the data are split into early and late periods covering days 16-35 and 50-162, respectively, optimized for Ni-56 and Co-56 lines. As expected for the early period much of the gamma-ray signal is confined to energies below $\\sim$200 keV, while for the late period it is most strong above 400 keV. In particular, in the late period Co-56 lines at 847 and 1248 keV are detected at 4.7 and 4.3 sigma respectively. The lightcurves in several representative energy bands are calculated for the entire period. The resulting spectra and lightcurves are compared with a subset of models. We confirm our previous finding that the gamma-ray data are broadly consistent with the expectations for canonical 1D models, such as delayed detonation or deflagration models for a near-Chandrasekhar mass WD. Late optical spectra (day 136 after the explosion) show rather symmetric ...

Churazov, E; Isern, J; Bikmaev, I; Bravo, E; Chugai, N; Grebenev, S; Jean, P; Kndlseder, J; Lebrun, F; Kuulkers, E

2015-01-01T23:59:59.000Z

110

Plan de cours Facult des arts et des sciences  

E-Print Network (OSTI)

Kruskal-Wallis. Test d'homog�n�it� des variances. Comparaisons multiples. 28 nov. 11) ANOVA � deux crit

Parrott, Lael

111

Plan de cours Facult des arts et des sciences  

E-Print Network (OSTI)

Kruskal-Wallis. Test d'homog�n�it� des variances. Comparaisons multiples. 27 nov. 11) ANOVA � deux crit

Parrott, Lael

112

2010-2011 Depto. Ciencia de la Computacin e IA Especialista Universitario Java Enterprise  

E-Print Network (OSTI)

© 2010-2011 Depto. Ciencia de la Computación e IA Especialista Universitario Java Enterprise Struts Sesión 4: Introducción a Struts 2 #12;© 2010-2011 Depto. Ciencia de la Computación e IA Especialista · Taglibs · Internacionalización · Validación · Conceptos nuevos en Struts 2 #12;© 2010-2011 Depto. Ciencia

Escolano, Francisco

113

Experto Universitario Java Enterprise 2012-2013 Depto. Ciencia de la Computacin e IA  

E-Print Network (OSTI)

Experto Universitario Java Enterprise © 2012-2013 Depto. Ciencia de la Computación e IA Lenguaje Java Avanzado Sesión 3: Tratamiento de errores #12;Lenguaje Java Avanzado © 2012-2013 Depto. Ciencia de · Tipos genéricos #12;Lenguaje Java Avanzado © 2012-2013 Depto. Ciencia de la Computación e IA Errores - 3

Escolano, Francisco

114

Constraining the double-degenerate scenario for Type Ia supernovae from merger ejected matter  

E-Print Network (OSTI)

We follow the mass blown during the WD-WD merger process in the Double-Degenerate (DD) scenario for type Ia supernovae (SN Ia), and find that the interaction of the SN ejecta with this wind affects the early (thermal energy and then to additional radiation. The radiation could be interpreted as an explosion originating from a progenitor having a radius of one solar radius or more, contradicting observations of SN 2011fe.

Levanon, Naveh; Garca-Berro, Enrique

2014-01-01T23:59:59.000Z

115

Evaluation des performances des protocoles de routage Ad hoc  

E-Print Network (OSTI)

Evaluation des performances des protocoles de routage Ad hoc Abdelali Boushaba1 , Mohammed Oumsis2 quatre protocoles de routage Ad hoc: DSR, AODV, OLSR et DSDV et d'autre part, d'examiner l'impact de la'activité. Mots-clés--Réseaux mobiles Ad hoc; DSR; AODV; DSDV; OLSR; évaluation des performances; simulation, NS-2

Paris-Sud XI, Université de

116

Les nanosciences : (r)volution des savoirs et des technologies ?  

E-Print Network (OSTI)

1 Les nanosciences : (r)évolution des savoirs et des technologies ? Jean-Louis Pautrat Physicien, ancien Directeur de la Fondation "Nanosciences aux limites de la nanoélectronique" 23 rue des Martyrs : miniaturisation ; microélectronique ; nanomatériaux ; nanosciences ; nanomédecine 1 - Introduction Tout « honnête

Boyer, Edmond

117

THE DISCOVERY OF THE MOST DISTANT KNOWN TYPE Ia SUPERNOVA AT REDSHIFT 1.914  

SciTech Connect

We present the discovery of a Type Ia supernova (SN) at redshift z = 1.914 from the CANDELS multi-cycle treasury program on the Hubble Space Telescope (HST). This SN was discovered in the infrared using the Wide-Field Camera 3, and it is the highest-redshift Type Ia SN yet observed. We classify this object as a SN Ia by comparing its light curve and spectrum with those of a large sample of Type Ia and core-collapse SNe. Its apparent magnitude is consistent with that expected from the {Lambda}CDM concordance cosmology. We discuss the use of spectral evidence for classification of z > 1.5 SNe Ia using HST grism simulations, finding that spectral data alone can frequently rule out SNe II, but distinguishing between SNe Ia and SNe Ib/c can require prohibitively long exposures. In such cases, a quantitative analysis of the light curve may be necessary for classification. Our photometric and spectroscopic classification methods can aid the determination of SN rates and cosmological parameters from the full high-redshift CANDELS SN sample.

Jones, David O.; Rodney, Steven A.; Riess, Adam G. [Department of Physics and Astronomy, Johns Hopkins University, Baltimore, MD 21218 (United States); Mobasher, Bahram [Department of Physics and Astronomy, University of California, Riverside, CA 92521 (United States); Dahlen, Tomas; Casertano, Stefano; Koekemoer, Anton [Space Telescope Science Institute, Baltimore, MD 21218 (United States); McCully, Curtis; Keeton, Charles R.; Patel, Brandon [Department of Physics and Astronomy, Rutgers, State University of New Jersey, Piscataway, NJ 08854 (United States); Frederiksen, Teddy F.; Hjorth, Jens [Dark Cosmology Centre, Niels Bohr Institute, University of Copenhagen, Juliane Maries Vej 30, DK-2100 Copenhagen (Denmark); Strolger, Louis-Gregory [Department of Physics, Western Kentucky University, Bowling Green, KY 42101 (United States); Wiklind, Tommy G. [Joint ALMA Observatory, ESO, Santiago (Chile); Challis, Peter [Harvard/Smithsonian Center for Astrophysics, Cambridge, MA 02138 (United States); Graur, Or [School of Physics and Astronomy, Tel-Aviv University, Tel-Aviv 69978 (Israel); Hayden, Brian; Garnavich, Peter [Department of Physics, University of Notre Dame, Notre Dame, IN 46556 (United States); Weiner, Benjamin J. [Department of Astronomy, University of Arizona, Tucson, AZ 85721 (United States); Filippenko, Alexei V. [Department of Astronomy, University of California, Berkeley, CA 94720-3411 (United States); and others

2013-05-10T23:59:59.000Z

118

Mcanismes des dysfonctions et pathologies  

Science Journals Connector (OSTI)

La diffrenciation sexuelle et la fcondit masculines sont le rsultat dune cascade de signaux qui inclut des facteurs cellulaires, gntiques et endocriniens. Les manifestations cliniques des anomalies du d...

P. Wieacker; A. Mahmoud; F. Comhaire

2008-01-01T23:59:59.000Z

119

CIMAT, VIII Escuela de verano, 30 de julio -12 de agos* Introducci'on a la Geometr'ia de la Mec'anic*  

E-Print Network (OSTI)

* *fluencia de una fuerza F(x) se define su energ'ia (como funci'on de su posici'on y velocidad) por E = T +* * V donde la energ'ia cin'etica T = m(x`)2=2 y la energ'ia potencial V (x) es una funci'on que(x) entonces su energ* *'ia E se mantiene constante en el tiempo (la Ley de Conservaci'on de Energ'ia

Bor, Gil

120

Theorie des langages Elise Bonzon  

E-Print Network (OSTI)

´e , correspond `a la suite de symboles vide. 5 / 29 Th´eorie des langages #12;Alphabets et langages Longueur d'unTh´eorie des langages Alphabets Elise Bonzon http://web.mi.parisdescartes.fr/ bonzon/ elise.bonzon@parisdescartes.fr 1 / 29 Th´eorie des langages #12;Alphabets et langages Alphabets et langages Alphabets Op

Bonzon, Elise

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


121

Theorie des langages Automates finis  

E-Print Network (OSTI)

Th´eorie des langages Automates finis Elise Bonzon http://web.mi.parisdescartes.fr/ bonzon/ elise.bonzon@parisdescartes.fr 1 / 51 Th´eorie des langages #12;Automates finis Automates finis Introduction Formalisation Repr´erations sur les automates Automates finis et langages 2 / 51 Th´eorie des langages #12;Automates finis

Bonzon, Elise

122

Iowa Office of Energy Independence | Open Energy Information  

Open Energy Info (EERE)

Iowa Office of Energy Independence Iowa Office of Energy Independence Jump to: navigation, search Name Iowa Office of Energy Independence Place Des Moines, Iowa Zip IA 50319 Product In 2007, Governor Culver and the Iowa State Legislature created the Office of Energy Independence and the Iowa Power Fund to accelerate Iowaâ€(tm)s leadership in energy for the 21st Century. References Iowa Office of Energy Independence[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Iowa Office of Energy Independence is a company located in Des Moines, Iowa . References ↑ "Iowa Office of Energy Independence" Retrieved from "http://en.openei.org/w/index.php?title=Iowa_Office_of_Energy_Independence&oldid=347104

123

Verifying the Cosmological Utility of Type Ia Supernovae: Implications of a Dispersion in the Ultraviolet Spectra  

SciTech Connect

We analyze the mean rest-frame ultraviolet (UV) spectrum of Type Ia Supernovae (SNe) and its dispersion using high signal-to-noise ratio Keck-I/LRIS-B spectroscopy for a sample of 36 events at intermediate redshift (z=0.5) discovered by the Canada-France-Hawaii Telescope Supernova Legacy Survey (SNLS). We introduce a new method for removing host galaxy contamination in our spectra, exploiting the comprehensive photometric coverage of the SNLS SNe and their host galaxies, thereby providing the first quantitative view of the UV spectral properties of a large sample of distant SNe Ia. Although the mean SN Ia spectrum has not evolved significantly over the past 40percent of cosmic history, precise evolutionary constraints are limited by the absence of a comparable sample of high-quality local spectra. The mean UV spectrum of our z~;;=0.5 SNe Ia and its dispersion is tabulated for use in future applications. Within the high-redshift sample, we discover significant UV spectral variations and exclude dust extinction as the primary cause by examining trends with the optical SN color. Although progenitor metallicity may drive some of these trends, the variations we see are much larger than predicted in recent models and do not follow expected patterns. An interesting new result is a variation seen in the wavelength of selected UV features with phase. We also demonstrate systematic differences in the SN Ia spectral features with SN light curve width in both the UV and the optical. We show that these intrinsic variations could represent a statistical limitation in the future use of high-redshift SNe Ia for precision cosmology. We conclude that further detailed studies are needed, both locally and at moderate redshift where the rest-frame UV can be studied precisely, in order that future missions can confidently be planned to fully exploit SNe Ia as cosmological probes.

Nugent, Peter E; Ellis, R.S.; Sullivan, M.; Nugent, P.E.; Howell, D.A.; Gal-Yam, A.; Astier, P.; Balam, D.; Balland, C.; Basa, S.; Carlberg, R.; Conley, A.; Fouchez, D.; Guy, J.; Hardin, D.; Hook, I.; Pain, R.; Perrett, K.; Pritchet, C.J.; Regnault, N.

2008-02-28T23:59:59.000Z

124

Utilizing Type Ia Supernovae in a Large, Fast, Imaging Survey to Constrain Dark Energy  

E-Print Network (OSTI)

We study the utility of a large sample of type Ia supernovae that might be observed in an imaging survey that rapidly scans a large fraction of the sky for constraining dark energy. We consider information from the traditional luminosity distance test as well as the spread in SNeIa fluxes at fixed redshift induced by gravitational lensing. We include a treatment of photometric redshift uncertainties in our analysis. Our primary result is that the information contained in the mean distance moduli of SNeIa and the dispersion among SNeIa distance moduli complement each other, breaking a degeneracy between the present dark energy equation of state and its time variation without the need for a high-redshift supernova sample. To address photometric redshift uncertainties, we present dark energy constraints as a function of the size of an external set of spectroscopically-observed SNeIa that may be used for redshift calibration, nspec. We find that an imaging survey can constrain the dark energy equation of state at the epoch where it is best constrained with a 1-sigma error of sigma(wpiv)~0.03-0.09$, depending upon various assumptions. In addition, the marginal improvement in the error sigma(wpiv) from an increase in the spectroscopic calibration sample drops once nspec ~ 10^3. This result is important because it is of the order of the size of calibration samples likely to be compiled in the coming decade and because, for samples of this size, the spectroscopic and imaging surveys individually place comparable constraints on the dark energy equation of state. In all cases, it is best to calibrate photometric redshifts with a set of spectroscopically-observed SNeIa with relatively more objects at high redshift than the parent sample of imaging SNeIa.

Andrew R. Zentner; Suman Bhattacharya

2008-12-01T23:59:59.000Z

125

Discovering the Nature of Dark Energy: Towards Better Distances from Type Ia Supernovae -- Final Technical Report  

SciTech Connect

Type Ia supernovae (SNe Ia; exploding white-dwarf stars) were the key to the Nobel-worthy 1998 discovery and subsequent verification that the expansion of the Universe is accelerating, driven by the effects of dark energy. Understanding the nature of this mysterious, yet dominant, component of the Universe is at the forefront of research in cosmology and fundamental physics. SNe Ia will continue to play a leading role in this enterprise, providing precise cosmological distances that improve constraints on the nature of dark energy. However, for this effort to succeed, we need to more thoroughly understand relatively nearby SNe Ia, because our conclusions come only from comparisons between them and distant (high-redshift) SNe Ia. Thus, detailed studies of relatively nearby SNe Ia are the focus of this research program. Many interesting results were obtained during the course of this project; these were published in 32 refereed research papers that acknowledged the grant. A major accomplishment was the publication of supernova (SN) rates derived from about a decade of operation of the Lick Observatory Supernova Search (LOSS) with the 0.76-meter Katzman Automatic Imaging Telescope (KAIT). We have determined the most accurate rates for SNe of different types in large, nearby galaxies in the present-day Universe, and these can be compared with SN rates far away (and hence long ago in the past) to set constraints on the types of stars that explode. Another major accomplishment was the publication of the light curves (brightness vs. time) of 165 SNe Ia, along with optical spectroscopy of many of these SNe as well as other SNe Ia, providing an extensive, homogeneous database for detailed studies. We have conducted intensive investigations of a number of individual SNe Ia, including quite unusual examples that allow us to probe the entire range of SN explosions and provide unique insights into these objects and the stars before they explode. My team's studies have also led to the identification of subsamples of SNe Ia that can be used to provide the most reliable cosmological distances, and we developed ways to deal with the dust that makes SNe Ia appear fainter than they really are. Using the KAIT/LOSS sample, we produced an excellent Hubble diagram (galaxy recession speed vs. distance), accurately showing the expansion of the Universe. Even smaller scatter was achieved when spectroscopic characteristics were taken into account. Another high-quality Hubble diagram was constructed with SNe Ia from the Sloan Digital Sky Survey (SDSS). These Hubble diagrams provide useful new constraints on the nature of the dark energy that is accelerating the expansion of the Universe. As an added bonus of our research, we also studied core-collapse SNe, which differ fundamentally from SNe Ia.

Filippenko, Alexei Vladimir [Univ. California, Berkeley

2014-05-09T23:59:59.000Z

126

CfA4: LIGHT CURVES FOR 94 TYPE Ia SUPERNOVAE  

SciTech Connect

We present multi-band optical photometry of 94 spectroscopically confirmed Type Ia supernovae (SNe Ia) in the redshift range 0.0055-0.073, obtained between 2006 and 2011. There are a total of 5522 light-curve points. We show that our natural-system SN photometry has a precision of {approx}< 0.03 mag in BVr'i', {approx}< 0.06 mag in u', and {approx}< 0.07 mag in U for points brighter than 17.5 mag and estimate that it has a systematic uncertainty of 0.014, 0.010, 0.012, 0.014, 0.046, and 0.073 mag in BVr'i'u'U, respectively. Comparisons of our standard-system photometry with published SN Ia light curves and comparison stars reveal mean agreement across samples in the range of {approx}0.00-0.03 mag. We discuss the recent measurements of our telescope-plus-detector throughput by direct monochromatic illumination by Cramer et al. This technique measures the whole optical path through the telescope, auxiliary optics, filters, and detector under the same conditions used to make SN measurements. Extremely well characterized natural-system passbands (both in wavelength and over time) are crucial for the next generation of SN Ia photometry to reach the 0.01 mag accuracy level. The current sample of low-z SNe Ia is now sufficiently large to remove most of the statistical sampling error from the dark-energy error budget. But pursuing the dark-energy systematic errors by determining highly accurate detector passbands, combining optical and near-infrared (NIR) photometry and spectra, using the nearby sample to illuminate the population properties of SNe Ia, and measuring the local departures from the Hubble flow will benefit from larger, carefully measured nearby samples.

Hicken, Malcolm; Challis, Peter; Kirshner, Robert P.; Bakos, Gaspar; Berlind, Perry; Brown, Warren R.; Caldwell, Nelson; Calkins, Mike; Falco, Emilio; Fernandez, Jose; Friedman, Andrew S.; Groner, Ted; Hartman, Joel [Harvard-Smithsonian Center for Astrophysics, Cambridge, MA 02138 (United States); Rest, Armin [Space Telescope Science Institute, Baltimore, MD 21218 (United States); Cramer, Claire E. [NIST (National Institute of Standards and Technology), Gaithersburg, MD 20899 (United States); Wood-Vasey, W. Michael [Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, PA 15260 (United States); Currie, Thayne [NASA, Goddard Space Flight Center, Greenbelt, MD 20771 (United States); De Kleer, Kathy [Department of Physics, Massachusetts Institute of Technology, Cambridge, MA 02139 (United States); Esquerdo, Gil; Everett, Mark, E-mail: mhicken@cfa.harvard.edu [Planetary Science Institute, 1700 East Fort Lowell Road, Tucson, AZ 85719 (United States); and others

2012-06-01T23:59:59.000Z

127

UNIVERSITE DE NANTES FACULTE DES SCIENCES ET DES TECHNIQUES  

E-Print Network (OSTI)

'`a beaucoup d'autres), le go^ut et le plaisir des math´emati- ques, gr^ace `a ses cours passionnants et l

Boyer, Edmond

128

Plan de cours Facult des arts et des sciences  

E-Print Network (OSTI)

variance (ANOVA) � un crit�re de classification; test de Kruskal-Wallis. Test d'homog�n�it� des variances

Parrott, Lael

129

Dynamique des savoirs et des savoir-faire dans un contexte pluriculturel. tude comparative des activits littorales au Gabon.  

E-Print Network (OSTI)

??Les littoraux sont des espaces d'interfaces non seulement cologiques, mais aussi humaines. De tout temps peupls ou traverss par des hommes de cultures et de (more)

Sabinot, Catherine

2008-01-01T23:59:59.000Z

130

IAS15: a fast, adaptive, high-order integrator for gravitational dynamics, accurate to machine precision over a billion orbits  

Science Journals Connector (OSTI)

......error behaves like a random walk. Our tests show that ias15 is superior to a mixed-variable...that ias15 follows Brouwer's law. We test our integrator in a wide variety of cases...focus on the two-body problem, a simple test case where we know the correct answer......

Hanno Rein; David S. Spiegel

2015-01-01T23:59:59.000Z

131

Proposition de rforme de la formation des psychologues en France et dans lUnion europenne  

Science Journals Connector (OSTI)

Rsum En France, comme dans lUnion europenne, le nombre des psychologues ne cesse daugmenter pour constituer de trs loin le plus important vivier de professionnels psy et dexperts potentiels. Les demandes de prestations faites aux psychologues dans des domaines trs varis connaissent elles aussi, depuis des annes, une expansion sans prcdent. Malgr ce dveloppement qui devrait encore saccrotre considrablement, les formations initiales des psychologues demeurent trs ingales et disparates et souvent trs loignes, voire inadaptes par rapport aux attentes lgitimes des usagers. Il importe donc de rformer au plus vite cette formation en lallongeant, en lactualisant, en lhomognisant, en ladaptant aux connaissances et aux besoins actuels et en la sanctionnant par un titre unique et clair: le doctorat. Pour rsumer le problme qui ne cesse de saggraver dans sa spcificit franaise, il faut former beaucoup moins de psychologues, mais il faut les former beaucoup mieux. Cette rforme, dune imprieuse ncessit sociale et humaine, doit videmment saccompagner aussi dune indispensable et importante rvision des critres de slection et de comptence de celles et de ceux qui dispenseront cette formation renouvele (les critres en vigueur actuellement pour recruter les enseignants de la psychologie tant depuis longtemps et juste titre, trs largement contests comme tant la principale cause des carences de la formation initiale des psychologues et de leur morcellement professionnel). SummaryBackground In France, as in the European Union, the number of psychologists continues to increase and constitutes by far the most important source of professionals in this field. The requests for services of psychologists in many various domains have also increased in an unprecedented way over a number of years. In spite of this development, which should continue to increase considerably, the initial training of psychologists remains uneven and disparate and often remote from, even unsuitable to, the legitimate expectations of users. It is therefore important to reform this training by extending, updating, homogenising and adapting it to current knowledge and needs, and by marking it by a single and specific degree: that of a doctorate. This new eight-year doctoral curriculum would be at the same time more complete and simpler than the European Diploma in Psychology model (EuroPsy), for instance. This latter is a very complicated and insufficient subject and would not completely resolve the great problems of psychologists training and the competences they need to gain in order to access professional practise, research and teaching. This extension of the psychologists training would make it possible to integrate new data concerning traditional fields of psychology and data concerning new fields of application of psychology and should obviously include the essential training for psychotherapies referred to the great theoretical and practical models, since their interest is clinically acknowledged (psychoanalysis and psychoanalytical therapies, cognitive and behavioural therapies, systemic therapies, therapies for individuals, couples, families, groups). This polyreferred training would make it possible to go from a culture still too often axed on orientation and deficiencies of the therapist, to a culture of indication, opening and competence, focused on the patient's interest. Teaching of psychophysiology and neurosciences should be updated and harmonised by taking into account the great current and future stakes of public health. It should be supplemented by psychopharmacology lectures. This reform of psychologists training would ensure a common pedestal of increased knowledge coupled with theoretical/practical competence. The positive consequences of such a reform would relate to many fields. Here are six examples. Tracks of work Education: prevention, tracking, treatment of personal problems or of instruction from nursery sc

J.-P. Bouchard

2009-01-01T23:59:59.000Z

132

TIC et commerce lectronique : laboratoires de la libralisation des changes et des volutions des rgles  

E-Print Network (OSTI)

1 TIC et commerce électronique : laboratoires de la libéralisation des échanges et des évolutions/Département Sciences Economiques et Sociales Les échanges internationaux de produits TIC et le commerce électroniques à terme à l'abolition des droits de douane pour les produits de la filière TIC et les échanges

Paris-Sud XI, Université de

133

Les reprsentations sociales des lves, des enseignants du secondaire et des parents propos de la russite scolaire en zones urbaine et rurale au Gabon.  

E-Print Network (OSTI)

??Cette thse avait pour objectif de dgager et de comparer les reprsentations sociales de la russite scolaire des lves, des enseignants du secondaire et des (more)

Immongault, Christine Marthe

2014-01-01T23:59:59.000Z

134

FROM RACKS TO POINTED HOPF ALGEBRAS AS ANDRUSKIEWITSCH AND MAT IAS GRA ~  

E-Print Network (OSTI)

FROM RACKS TO POINTED HOPF ALGEBRAS NICOL #19; AS ANDRUSKIEWITSCH AND MAT #19; IAS GRA ~ NA (C X; c q ), where X is a rack and q is a 2-cocycle on X with values in C #2; . Racks and cohomology of racks appeared also in the work of topologists. This leads us to the study of the structure of racks

Graña, Matías

135

Flames in Type Ia Supernova: Deflagration-Detonation Transition in the Oxygen Burning Flame  

E-Print Network (OSTI)

Flames in Type Ia Supernova: Deflagration-Detonation Transition in the Oxygen Burning Flame S. E of these regions can be supersonic and could initiate a detonation. Subject headings: supernovae: general a late time transition of the thermonuclear burning to a detonation wave (e.g., Hoflich et al. 1995

136

Section I. Summary of Project Activities Section I-A. 2008-2009 Project Summary  

E-Print Network (OSTI)

Section I. Summary of Project Activities Section I-A. 2008-2009 Project Summary University year, we accomplished the following: · Established a dual career opportunity procedure vetted to address, communicate procedures for the new daycare facility, and to explore the potential

Farritor, Shane

137

SEASONAL V A R IA TIONS IN STRUCTURE AND CIRCULATION IN THE RED SEA  

E-Print Network (OSTI)

SEASONAL V A R IA TIONS IN STRUCTURE AND CIRCULATION IN THE RED SEA A DISSERTATION SUBMITTE D and surface circulation in the Red Sea, occur r ing along the north-south axis of the Sea and extending fr om on in the northern Red Sea is frorn the nor th-northwest throughout the year' during the winter ( fr om October

Luther, Douglas S.

138

Seminar Ia, cetrti letnik, stari program LONGITUDINAL DYNAMICS OF PARTICLES IN ACCELERATORS  

E-Print Network (OSTI)

Seminar Ia, cetrti letnik, stari program LONGITUDINAL DYNAMICS OF PARTICLES IN ACCELERATORS Author motion of charged particles in particle accelerators. The technique of acceleration by electromagnetic waves is explored and the stability of motion under such acceleration is inspected. The seminar

?umer, Slobodan

139

Final Technical Report: Discovering the Nature of Dark Energy: Towards Better Distances from Type Ia Supernovae  

SciTech Connect

The final technical report from the project "Discovering the Nature of Dark Energy: Towards Better Distances from Type Ia Supernovae" led at Rutgers the State University of New Jersey by Prof. Saurabh W. Jha is presented, including all publications resulting from this award.

Saurabh W. Jha

2012-10-03T23:59:59.000Z

140

SponSored by http://www.ntu.edu.sg/ias/oCpA8  

E-Print Network (OSTI)

SponSored by http://www.ntu.edu.sg/ias/oCpA8 International Conference on physics education · Statistical and Nonlinear physics · Science Education · Women in Physics Sir Michael PEPPER Univ. College or poster presentations. All posters at the conference will be considered for the 2014 OCPA-APS Outstanding

Faraon, Andrei

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


141

THE CARNEGIE SUPERNOVA PROJECT: SECOND PHOTOMETRY DATA RELEASE OF LOW-REDSHIFT TYPE Ia SUPERNOVAE  

SciTech Connect

The Carnegie Supernova Project (CSP) was a five-year observational survey conducted at Las Campanas Observatory that obtained, among other things, high-quality light curves of {approx}100 low-redshift Type Ia supernovae (SNe Ia). Presented here is the second data release of nearby SN Ia photometry consisting of 50 objects, with a subset of 45 having near-infrared follow-up observations. Thirty-three objects have optical pre-maximum coverage with a subset of 15 beginning at least five days before maximum light. In the near-infrared, 27 objects have coverage beginning before the epoch of B-band maximum, with a subset of 13 beginning at least five days before maximum. In addition, we present results of a photometric calibration program to measure the CSP optical (uBgVri) bandpasses with an accuracy of {approx}1%. Finally, we report the discovery of a second SN Ia, SN 2006ot, similar in its characteristics to the peculiar SN 2006bt.

Stritzinger, Maximilian D. [The Oskar Klein Centre, Department of Astronomy, Stockholm University, AlbaNova, 10691 Stockholm (Sweden); Phillips, M. M.; Campillay, Abdo; Morrell, Nidia; Krzeminski, Wojtek; Roth, Miguel [Carnegie Observatories, Las Campanas Observatory, La Serena (Chile); Boldt, Luis N. [Argelander Institut fuer Astronomie, Universitaet Bonn, D-53111 Bonn (Germany); Burns, Chris; Freedman, Wendy L.; Madore, Barry F.; Persson, Sven E. [Observatories of the Carnegie Institution for Science, Pasadena, CA 91101 (United States); Contreras, Carlos [Centre for Astrophysics and Supercomputing, Swinburne University of Technology, Victoria 3122 (Australia); Gonzalez, Sergio [Atacama Large Millimeter/Submillimeter Array, European Southern Observatory (Chile); Folatelli, Gaston [Institute for the Physics and Mathematics of the Universe (IPMU), University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8583 (Japan); Salgado, Francisco [Leiden Observatory, Leiden University, NL-2300 RA Leiden (Netherlands); DePoy, D. L.; Marshall, J. L.; Rheault, Jean-Philippe; Suntzeff, Nicholas B. [George P. and Cynthia Woods Mitchell Institute for Fundamental Physics and Astronomy, Department of Physics and Astronomy, Texas A and M University, College Station, TX 77843 (United States); Hamuy, Mario, E-mail: max.stritzinger@astro.su.se, E-mail: max@dark-cosmology.dk, E-mail: mstritzinger@lco.cl [Departamento de Astronomia, Universidad de Chile, Santiago (Chile)

2011-11-15T23:59:59.000Z

142

Abstract IA08: PTEN and PI3K signaling in brain development and disease  

Science Journals Connector (OSTI)

...Abstract IA08: PTEN and PI3K signaling in brain development and disease Suzanne J. Baker...an increased genetic susceptibility to brain tumors. However, inherited mutation of...and tumor suppression in the mammalian brain. Recently, germline or somatic mutations...

Suzanne J. Baker

2014-12-01T23:59:59.000Z

143

Turbulent Oxygen Flames in Type Ia Supernovae A. J. Aspden1  

E-Print Network (OSTI)

Turbulent Oxygen Flames in Type Ia Supernovae A. J. Aspden1 , J. B. Bell1 , and S. E. Woosley2 oxygen flames. The two aims of the paper are to examine the response of the inductive oxygen flame to intense levels of turbulence, and to explore the possibility of transition to detonation in the oxygen

144

The superconducting spin valve and triplet superconductivity I.A. Garifullin a,n  

E-Print Network (OSTI)

The superconducting spin valve and triplet superconductivity I.A. Garifullin a,n , P.V. Leksin s t r a c t A review of our recent results on the spin valve effect is presented. We have used coefficient DF and the exchange splitting I of the conduction band in the F layer [1]. For pure Fe the value

Fominov, Yakov

145

Secteur publique (universit, InrIa, InSEE, ministres) et secteur priv (industrie : aronautique, automobile, militaire,  

E-Print Network (OSTI)

, automobile, militaire, services, banques, finances et assurances) Semestre 1 · Mécanique des fluides

Daveau, Christian

146

CIMAT, VIII Escuela de verano, 30 de julio -12 de ago* Introducci'on a la Geometr'ia de la Mec'ani*  

E-Print Network (OSTI)

con un valor fijo de la energ* *'ia corresponden a secciones del cono del inciso (a) por * *energ'ia tienen el mismo semi-eje mayor. 11.Demuestra la tercera ley de Kepler: toda soluci'on peri Introducci'on a la Geometr'ia de la Mec'ani* *ca Cl'asica Problemas 7 - 12

Bor, Gil

147

Toxicite des emissions des vehicules diesel Docteur en mededne l'INERIS  

E-Print Network (OSTI)

94-53 .'X- Toxicite des emissions des vehicules diesel D. LAFON Docteur en mededne ä l'INERIS De nombreuses questions ont ete posees au cours de ce debat sur la toxicite des emissions des moteurs diesel. II de la täche que nous avons effectuee. I. Composition des emissions du diesel Avant d'aborder la

Paris-Sud XI, Université de

148

Scurit au-del des mythes et des croyances  

ScienceCinema (OSTI)

Prsentation orale en franais, support visuel en franais et en anglais. La pire des failles de scurit est l'impression de scurit. Le dcalage entre la comprhension que l?on a des technologies utilises, et leurs potentiels rels, ainsi que l'impact potentiellement ngatif qu'elles peuvent avoir sur nos vies, n'est pas toujours compris, ou pris en compte par la plupart d'entre-nous. On se contente de nos perceptions pour ne pas avoir se confronter la ralit... Alors qu'en est-il vraiment ? En matire de scurit qui de l'humain ou des technologies a le contrle ?

None

2011-10-06T23:59:59.000Z

149

Des Plaines Landfill Biomass Facility | Open Energy Information  

Open Energy Info (EERE)

Des Plaines Landfill Biomass Facility Jump to: navigation, search Name Des Plaines Landfill Biomass Facility Facility Des Plaines Landfill Sector Biomass Facility Type Landfill Gas...

150

Drsenepithelien. Morphodynamik des Schilddrsenepithels. Fortsetzung der Tafel 45  

Science Journals Connector (OSTI)

nderungen des Funktionszustandes entsprechen Vernderungen der Form und Struktur des Drsenepithels. Ein besonders anschauliches Beispiel stellt die Dynamik des Schilddrsenepithels dar.

Prof. Dr. R. V. Krsti?

1988-01-01T23:59:59.000Z

151

QFDES(3) QFDES(3) qfDES -a library of DES utilities  

E-Print Network (OSTI)

DES_ECB_d(key, data, size) int qfDES_CBC_e(key, data, size, initVec), qfDES_CBC_d(key, data, size, initVec) int qfDES_CFB_e(key, data, size, initVec), qfDES_CFB_d(key, data, size, initVec) int qfDES_OFB_e(key, data, size, init (Electronic Code Book), CBC (Cipher Block Chaining), Cipher Feedback(CFB) or Ouput Feedback (OFB). CFB and OFB

Bhatti, Saleem N.

152

Analyse des erreurs orthographiques des tudiants iraniens en langue franaise.  

E-Print Network (OSTI)

??Lobjectif de cette recherche consiste dcrire les types derreurs dorthographe des tudiants iraniens en langue franaise et mener une analyse qualitative et quantitative (more)

Katoozian, Katayoon

2013-01-01T23:59:59.000Z

153

IA REP0 SAND85-2809 Unlimited Release UC-92A  

Office of Scientific and Technical Information (OSTI)

IA REP0 SAND85-2809 Unlimited Release UC-92A IA REP0 SAND85-2809 Unlimited Release UC-92A Printed July 1986 High Energy Gas Fracture Experiments in Fluid-Filled Boreholes-Potential Geothermal Application J. F. Cuderman, T. Y. Chu, J. Jung, R. D. Jacobson Prepared by Sandia National Laboratories Albuquerque, New Mexico 87 185 and Livermore, California 94550 for the United States Department of Energy under Contract DE-AC04-76DP00789 DISCLAIMER This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency Thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process

154

File:USDA-CE-Production-GIFmaps-IA.pdf | Open Energy Information  

Open Energy Info (EERE)

IA.pdf IA.pdf Jump to: navigation, search File File history File usage Iowa Ethanol Plant Locations Size of this preview: 776 × 600 pixels. Full resolution ‎(1,650 × 1,275 pixels, file size: 303 KB, MIME type: application/pdf) Description Iowa Ethanol Plant Locations Sources United States Department of Agriculture Related Technologies Biomass, Biofuels, Ethanol Creation Date 2010-01-19 Extent State Countries United States UN Region Northern America States Iowa External links http://www.nass.usda.gov/Charts_and_Maps/Ethanol_Plants/ File history Click on a date/time to view the file as it appeared at that time. Date/Time Thumbnail Dimensions User Comment current 16:13, 27 December 2010 Thumbnail for version as of 16:13, 27 December 2010 1,650 × 1,275 (303 KB) MapBot (Talk | contribs) Automated bot upload

155

Mechanistic studies of proton-coupled electron transfer in aminotyrosine- and fluorotyrosine- substituted class Ia Ribonucleotide reductase  

E-Print Network (OSTI)

Ribonucleotide reductase (RNR) catalyzes the conversion of nucleotides to 2'- deoxynucleotides in all organisms. The class Ia RNR from Escherichia coli is active as an a2p2 complex and utilizes an unprecedented mechanism ...

Minnihan, Ellen Catherine

2012-01-01T23:59:59.000Z

156

Generation of a stable, aminotyrosyl radical-induced ?2?2 complex of Escherichia coli class Ia ribonucleotide reductase  

E-Print Network (OSTI)

Ribonucleotide reductase (RNR) catalyzes the conversion of nucleoside diphosphates to deoxynucleoside diphosphates (dNDPs). The Escherichia coli class Ia RNR uses a mechanism of radical propagation by which a cysteine in ...

Minnihan, Ellen Catherine

157

IA --"-IScience Service Featuse 'I WHY T i E IJEAYIiER ?  

E-Print Network (OSTI)

No. 591 April 3 IA --"-IScience Service Featuse 'I WHY T i E IJEAYIiER ? II city located oa the Ice.pp';g a% Bidialo, The ice c h i l l s a t h i n laye:. of a i r aver the Sake aridto laewwd. NOW$ vhen r may be srrfficionl t o produce a sheet cloud and g i ~ eBuffalo a day not oalg dwnt arid chilly Lu

158

Especialista Universitario Java Enterprise 2010-2011 Depto. Ciencia de la Computacin e IA  

E-Print Network (OSTI)

Especialista Universitario Java Enterprise © 2010-2011 Depto. Ciencia de la Computación e IA Sesión 1: Introducción a JMS #12;Servicios de Mensajes con JMS © 2010-2011 Depto. Ciencia de la Computación · Una Aplicación JMS · PTP · Pub/Sub #12;Servicios de Mensajes con JMS © 2010-2011 Depto. Ciencia de la

Escolano, Francisco

159

On the Thermonuclear Runaway in Type Ia Supernovae: How to Run Away?  

Science Journals Connector (OSTI)

Type Ia supernovae (SNe Ia) are thought to be thermonuclear explosions of massive white dwarfs (WDs). We present the first study of multidimensional effects during the final hours prior to the thermonuclear runaway that leads to the explosion. The calculations utilize an implicit, two-dimensional hydrodynamic code. Mixing and the ignition process are studied in detail. We find that the initial chemical structure of the WD is changed, but the material is not fully homogenized. In particular, the exploding WD sustains a central region with a low C/O ratio. This implies that the explosive nuclear burning will begin in a partially carbon-depleted environment. The thermonuclear runaway happens in a well-defined region close to the center. It is induced by compressional heat when matter is brought inward by convective flows. We find no evidence for multiple spot or strong off-center ignition. Convective velocities in the WD are on the order of 100 km s-1, which is well above the effective burning speeds in SNe Ia previously expected right after the runaway. In our calculations, the ignition occurs near the center. Then, for ? 0.5-1 s, the speed of the burning front will neither be determined by the laminar speed nor the Rayleigh-Taylor instabilities but by convective flows produced prior to the runaway. The consequences are discussed for our understanding of the detailed physics of the flame propagation, the deflagration to detonation transition, and the nucleosynthesis in the central layers. Our results strongly suggest the preconditioning of the progenitor as a key factor for our understanding of the diversity in SNe Ia.

P. Hflich; J. Stein

2002-01-01T23:59:59.000Z

160

Jenseits des Standard Modells  

NLE Websites -- All DOE Office Websites (Extended Search)

The Standard Model The Standard Model Unngelöste Rätsel Jenseits des Standard Modells Das Standard Modell gibt auf viele Fragen, über Struktur und Stabilität der Materie eine Antwort. Dazu braucht es nur die sechs Sorten von Quarks und Leptonen und die vier fundamentalen Kräfte. Aber das Standard Modell ist nicht vollständig; es gibt noch viele unbeantwortete Fragen. Eigentlich sollten wir aus Gründen der Symmetrie im Weltraum gleichviel Materie wie Antimaterie beobachten. Wir finden aber praktisch nur normale Materie! Warum? Woraus besteht die "Dunkle Materie", die wir nicht sehen können, die aber im Universum sichtbare Gravitationswirkungen zeigt? Warum kann das Standard Modell die Massen der Teilchen nicht vorhersagen? Sind Quarks and Leptonen wirklich fundamentae Teilchen, oder sind sie aus noch elementareren Partikeln aufgebaut?

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


161

Die uere Auslegung des Kraftwerkes  

Science Journals Connector (OSTI)

Bei Beginn der Entwurfsarbeiten mu man sich zunchst ber die Einsatzweise des Werkes und die zu erwartende Benutzungsdauer, die der Auslegung zugrunde zu legen ist, ein Bild machen. Bei dem heute praktisch k...

Dr.-Ing. habil L. Musil

1942-01-01T23:59:59.000Z

162

Gebudehlle als Teil des Bauwerkes  

Science Journals Connector (OSTI)

Energie im Bauwesen ist ein Teilaspekt des Bauens, welcher das Bauen seit Anfang der 70er-Jahre nachhaltig beeinflusst hat. Bewusster Einsatz von Energie, insbesondere von Wrmeenergie bei der Herstellung, dem Be...

Marco Ragonesi

1993-01-01T23:59:59.000Z

163

Titel des Moduls: Schallmesstechnik und  

E-Print Network (OSTI)

Titel des Moduls: Schallmesstechnik und Signalverarbeitung (Measurement Technique and Signal. Fortgeschrittene" und/oder mit Modulen TA 2 und TA 6 "Noise and Vibration Control", "Advanced Noise and Vibration

Berlin,Technische Universität

164

Testing the DistanceDuality Relation with Galaxy Clusters and Type Ia Supernovae  

Science Journals Connector (OSTI)

In this Letter, we propose a new and model-independent cosmological test for the distance-duality (DD) relation, ? = DL (z)(1 + z)2/DA (z) = 1, where DL and DA are, respectively, the luminosity and angular diameter distances. For DL we consider two sub-samples of Type Ia supernovae (SNe Ia) taken from Constitution data whereas DA distances are provided by two samples of galaxy clusters compiled by De Filippis etal. and Bonamente etal. by combining Sunyaev-Zeldovich effect and X-ray surface brightness. The SNe Ia redshifts of each sub-sample were carefully chosen to coincide with the ones of the associated galaxy cluster sample (?z DA (z) ? DL (z), we have tested the DD relation by assuming that ? is a function of the redshift parameterized by two different expressions: ?(z) = 1 + ?0 z and ?(z) = 1 + ?0 z/(1 + z), where ?0 is a constant parameter quantifying a possible departure from the strict validity of the reciprocity relation (?0 = 0). In the best scenario (linear parameterization), we obtain ?0 = 0.28+0.44 0.44 (2?, statistical + systematic errors) for the De Filippis etal. sample (elliptical geometry), a result only marginally compatible with the DD relation. However, for the Bonamente etal. sample (spherical geometry) the constraint is ?0 = 0.42+0.34 0.34 (3?, statistical + systematic errors), which is clearly incompatible with the duality-distance relation.

R. F. L. Holanda; J. A. S. Lima; M. B. Ribeiro

2010-01-01T23:59:59.000Z

165

Evaluation of copper for divider subassembly in MCO Mark IA and Mark IV scrap fuel baskets  

SciTech Connect

The K Basin Spent Nuclear Fuel (SNF) Project Multi-Canister Overpack (MCO) subprojection eludes the design and fabrication of a canister that will be used to confine, contain, and maintain fuel in a critically safe array to enable its removal from the K Basins, vacuum drying, transport, staging, hot conditioning, and interim storage (Goldinann 1997). Each MCO consists of a shell, shield plug, fuel baskets (Mark IA or Mark IV), and other incidental equipment. The Mark IA intact and scrap fuel baskets are a safety class item for criticality control and components necessary for criticality control will be constructed from 304L stainless steel. It is proposed that a copper divider subassembly be used in both Mark IA and Mark IV scrap baskets to increase the safety basis margin during cold vacuum drying. The use of copper would increase the heat conducted away from hot areas in the baskets out to the wall of the MCO by both radiative and conductive heat transfer means. Thus copper subassembly will likely be a safety significant component of the scrap fuel baskets. This report examines the structural, cost and corrosion consequences associated with using a copper subassembly in the stainless steel MCO scrap fuel baskets.

Graves, C.E.

1997-09-29T23:59:59.000Z

166

Observational constraints from SNe Ia and Gamma-Ray Bursts on a clumpy universe  

E-Print Network (OSTI)

The luminosity distance describing the effect of local inhomogeneities in the propagation of light proposed by Zeldovich-Kantowski-Dyer-Roeder (ZKDR) is tested with two probes for two distinct ranges of redshifts: supernovae Ia (SNe Ia) in 0.015 gamma-ray bursts (GRBs) in 1.547 < z < 3.57. Our analysis is performed by a Markov Chain Monte Carlo (MCMC) code that allows us to constrain the matter density parameter \\Omega_m as well as the smoothness parameter $\\alpha$ that measures the inhomogeneous-homogeneous rate of the cosmic fluid in a flat \\LambdaCDM model. The obtained best fits are (\\Omega_m=0.285^{+0.019}_{-0.018}, \\alpha= 0.856^{+0.106}_{-0.176}) from SNe Ia and (\\Omega_m=0.259^{+0.028}_{-0.028}, \\alpha=0.587^{+0.201}_{-0.202}) from GRBs, while from the joint analysis the best fits are (\\Omega_m=0.284^{+0.021}_{-0.020}, \\alpha= 0.685^{+0.164}_{-0.171}) with a \\chi^2_{\\rm red}=0.975. The value of the smoothness parameter $\\alpha$ indicates a clumped universe however it does not have an impact on the amount of dark energy (cosmological constant) needed to fit observations. This result may be an indication that the Dyer-Roeder approximation does not describe in a precise form the effects of clumpiness in the expansion of the universe.

Nora Bretn; Ariadna Montiel

2013-03-06T23:59:59.000Z

167

Especialista Universitario Java Enterprise Componentes de presentacin 2012-2013 Depto. Ciencia de la Computacin e IA Sesin 4  

E-Print Network (OSTI)

Especialista Universitario Java Enterprise Componentes de presentación © 2012-2013 Depto. Ciencia presentación © 2012-2013 Depto. Ciencia de la Computación e IA Sesión 4 Experto Universitario Java Enterprise Componentes de presentación © 2012-2013 Depto. Ciencia de la Computación e IA Sesión 4 Experto Universitario

Escolano, Francisco

168

Experto Universitario Java Enterprise Componentes de presentacin 2012-2013 Depto. Ciencia de la Computacin e IA Sesin 1  

E-Print Network (OSTI)

Experto Universitario Java Enterprise Componentes de presentación © 2012-2013 Depto. Ciencia de la Universitario Java Enterprise Componentes de presentación © 2012-2013 Depto. Ciencia de la Computación e IA Componentes de presentación © 2012-2013 Depto. Ciencia de la Computación e IA Sesión 1 Experto Universitario

Escolano, Francisco

169

Reecriture Unification dans des theories  

E-Print Network (OSTI)

R´e´ecriture Unification dans des th´eories version du 22 novembre 2004 ­ 14 h 29 #12;Compl´ements sur l'unification 1 #12;Ensemble complet d'unificateurs Il existe des th´eories pour lesquels les substitutions est un ensemble complet d'unificateurs d'un probl`eme P si 1. S U(P), 2. ( U(P)) ( S) ( Sub

Lescanne, Pierre

170

Constraints on dark energy with the LOSS SNIa sample  

Science Journals Connector (OSTI)

......deceleration, constrain the evolution of dark energy (DE), and search for possible...et-al. 2013). Imminent or future surveys to gather large data sets at high redshift include the Dark Energy Survey (DES) and the Large Synoptic......

Mohan Ganeshalingam; Weidong Li; Alexei V. Filippenko

2013-01-01T23:59:59.000Z

171

Utilizing Type Ia Supernovae in a Large, Fast, Imaging Survey to Constrain Dark Energy  

Science Journals Connector (OSTI)

We study the utility of a large sample of Type Ia supernovae (SNe Ia) that might be observed in an imaging survey that rapidly scans a large fraction of the sky for constraining dark energy. We consider both the information contained in the traditional luminosity distance test as well as the spread in Ia SN fluxes at fixed redshift induced by gravitational lensing. As would be required from an imaging survey, we include a treatment of photometric redshift uncertainties in our analysis. Our primary result is that the information contained in the mean distance moduli of SNe Ia and the dispersion of SN Ia distance moduli complement each other, breaking a degeneracy between the present dark energy equation of state and its time variation without the need for a high-redshift (z 0.8) SN sample. Including lensing information also allows for some internal calibration of photometric redshifts. To address photometric redshift uncertainties, we present dark energy constraints as a function of the size of an external set of spectroscopically observed SNe that may be used for redshift calibration, N spec. Depending upon the details of potentially available, external SN data sets, we find that an imaging survey can constrain the dark energy equation of state at the epoch where it is best constrained w p, with a 1? error of ?(w p) ? 0.03-0.09. In addition, the marginal improvement in the error ?(w p) from an increase in the spectroscopic calibration sample drops once N spec ~ a few ? 103. This result is important because it is of the order of the size of calibration samples likely to be compiled in the coming decade and because, for samples of this size, the spectroscopic and imaging surveys individually place comparable constraints on the dark energy equation of state. In all cases, it is best to calibrate photometric redshifts with a set of spectroscopically observed SNe with relatively more objects at high redshift (z 0.5) than the parent sample of imaging SNe.

Andrew R. Zentner; Suman Bhattacharya

2009-01-01T23:59:59.000Z

172

Spcification technique des stations de pompage pour les faisceaux secondaires des Zones Exprimentales du synchroton de 300 GeV  

E-Print Network (OSTI)

Spcification technique des stations de pompage pour les faisceaux secondaires des Zones Exprimentales du synchroton de 300 GeV

Coet, P

1975-01-01T23:59:59.000Z

173

FACULT DES SCIENCES HUMAINES ET SOCIALES -SORBONNE  

E-Print Network (OSTI)

FACULT? DES SCIENCES HUMAINES ET SOCIALES - SORBONNE LICENCE EN SCIENCES HUMAINES ET SOCIALES ANN?E UNIVERSITAIRE 2013-2014 MENTION SCIENCES DE L'?DUCATION L3 Faculté des Sciences humaines et sociales

Pellier, Damien

174

FACULT DES SCIENCES HUMAINES ET SOCIALES -SORBONNE  

E-Print Network (OSTI)

FACULT? DES SCIENCES HUMAINES ET SOCIALES - SORBONNE LICENCE EN SCIENCES HUMAINES ET SOCIALES ANN?E UNIVERSITAIRE 2013-2014 MENTION SCIENCES DU Vaillant 92100 Boulogne-Billancourt L3, M1 et M2 Faculté des Sciences

Pellier, Damien

175

CIMAT, VI Escuela de verano, 25 de julio 7 de agosto 1999 Introducci'on a la Geometr'ia de la Mec'anica Cl'asica  

E-Print Network (OSTI)

parametrizada por (x(t); ?? x(t)): (d) Dibujar las gr'aficas de su energ'ia cin'etica T = ( ?? x) 2 =2 y potencial­ vaci'on de energ'ia, E = T + V = constante: (e) Repetir los 4 incisos anteriores con x(1) = 2; ?? x(0CIMAT, VI Escuela de verano, 25 de julio ­ 7 de agosto 1999 Introducci'on a la Geometr'ia de la Mec

Bor, Gil

176

CIMAT, VI Escuela de verano, 25 de julio -7 de agosto 1999 Introducci'on a la Geometr'ia de la Mec'anica Cl'asica  

E-Print Network (OSTI)

(t), `x(t)). (d)Dibujar las gr'aficas de su energ'ia cin'etica T = (x`)2=2 y potencial* * V = x2- vaci'on de energ'ia, E = T + V = constante. (e)Repetir los 4 incisos anteriores con x(1) = 2, `x CIMAT, VI Escuela de verano, 25 de julio - 7 de agosto 1999 Introducci'on a la Geometr'ia de la

Bor, Gil

177

Study of the Detonation Phase in the Gravitationally Confined Detonation Model of Type Ia Supernovae  

Science Journals Connector (OSTI)

We study the gravitationally confined detonation (GCD) model of Type Ia supernovae (SNe Ia) through the detonation phase and into homologous expansion. In the GCD model, a detonation is triggered by the surface flow due to single-point, off-center flame ignition in carbon-oxygen white dwarfs (WDs). The simulations are unique in terms of the degree to which nonidealized physics is used to treat the reactive flow, including weak reaction rates and a time-dependent treatment of material in nuclear statistical equilibrium (NSE). Careful attention is paid to accurately calculating the final composition of material which is burned to NSE and frozen out in the rapid expansion following the passage of a detonation wave over the high-density core of the WD; and an efficient method for nucleosynthesis postprocessing is developed which obviates the need for costly network calculations along tracer particle thermodynamic trajectories. Observational diagnostics are presented for the explosion models, including abundance stratifications and integrated yields. We find that for all of the ignition conditions studied here a self-regulating process comprised of neutronization and stellar expansion results in final 56Ni masses of ~1.1M ?. But, more energetic models result in larger total NSE and stable Fe-peak yields. The total yield of intermediate mass elements is ~0.1M ? and the explosion energies are all around 1.5 ? 1051 erg. The explosion models are briefly compared to the inferred properties of recent SN Ia observations. The potential for surface detonation models to produce lower-luminosity (lower 56Ni mass) SNe is discussed.

Casey A. Meakin; Ivo Seitenzahl; Dean Townsley; George C. Jordan IV; James Truran; Don Lamb

2009-01-01T23:59:59.000Z

178

IS WX CEN A POSSIBLE TYPE Ia SUPERNOVA PROGENITOR WITH WIND-DRIVEN MASS TRANSFER?  

SciTech Connect

WX Cen is one of a few compact binary supersoft X-ray sources (CBSS) in the Galaxy that is a possible Type Ia supernova (SN Ia) progenitor. The supersoft X-ray radiation is explained as hydrostatic nuclear burning on the surface of the white dwarf component that is accreting hydrogen from a stellar companion at a high rate. If the mass donor in this system has a low mass, as has been suggested in the literature, one would expect a high wind-driven mass transfer rate. In that case, the orbital period of the system should increase. To test this theoretical prediction, we have monitored the system photometrically since 2010. By using four newly determined eclipse timings together with those collected from the literature, we discovered that the orbital period is decreasing at a rate of dP/dt = -5.15 Multiplication-Sign 10{sup -7} days yr{sup -1}. The long-term decrease in the orbital period is contrary to the prediction that the system is powered by wind-driven accretion. It therefore seems plausible that the mass donor could be more massive than the white dwarf, and that the mass transfer is driven by the thermal instability of the donor star. This finding suggests that WX Cen is a key object to check the physical mechanisms of mass accretion in CBSS. The corresponding timescale of the period change is about P/P-dot {approx} 0.81 x 10{sup 6} yr, indicating that WX Cen may evolve into an SNe Ia within one million years in the Galaxy.

Qian, S.-B.; Shi, G.; Zhu, L.-Y.; Liu, L.; Zhao, E.-G.; Li, L.-J. [Yunnan Observatories, Chinese Academy of Sciences (CAS), P.O. Box 110, 650011 Kunming (China); Fernandez Lajus, E.; Di Sisto, R. P., E-mail: qsb@ynao.ac.cn [Facultad de Ciencias Astronomicas y Geofisicas, Universidad Nacional de La Plata, 1900 La Plata, Buenos Aires (Argentina)

2013-08-01T23:59:59.000Z

179

On the Thermonuclear Runaway in Type Ia Supernovae: How to run away?  

E-Print Network (OSTI)

Type Ia Supernovae are thought to be thermonuclear explosions of massive white dwarfs (WD). We present the first study of multi-dimensional effects during the final hours prior to the thermonuclear runaway which leads to the explosion. The calculations utilize an implicit, 2-D hydro code.Mixing and the ignition process are studied in detail. We find that the initial chemical structure of the WD is changed but the material is not fully homogenized. The exploding WD sustains a central region with a low C/O ratio. This implies that the explosive nuclear burning will begin in a partially C-depleted environment. The thermonuclear runaway happens in a well defined region close to the center. It is induced by compressional heat when matter is brought inwards by convective flows. We find no evidence for multiple spot or strong off-center ignition. Convective velocities are of the order of 100 km/sec which is well above the effective burning speeds in SNe Ia previously expected right after the runaway. For about 0.5 to 1 sec, the speed of the burning front will neither be determined by the laminar speed nor the Rayleigh-Taylor instabilities but by convective flows produced prior to the runaway. The consequences are discussed for our under- standing of the detailed physics of the flame propagation, the deflagration detonation transition, and the nucleosynthesis in the central layers. Our results strongly suggest the pre-conditioning of the progenitor as a key-factor for our understanding of the diversity in SNeIa.

P. Hoeflich; J. Stein

2001-12-07T23:59:59.000Z

180

Reconstruction of Hessence Dark Energy and the Latest Type Ia Supernovae Gold Dataset  

E-Print Network (OSTI)

Recently, many efforts have been made to build dark energy models whose equation-of-state parameter can cross the so-called phantom divide $w_{de}=-1$. One of them is the so-called hessence dark energy model in which the role of dark energy is played by a non-canonical complex scalar field. In this work, we develop a simple method based on Hubble parameter $H(z)$ to reconstruct the hessence dark energy. As examples, we use two familiar parameterizations for $H(z)$ and fit them to the latest 182 type Ia supernovae Gold dataset. In the reconstruction, measurement errors are fully considered.

Hao Wei; Ningning Tang; Shuang Nan Zhang

2007-02-28T23:59:59.000Z

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181

Reconstruction of a Deceleration Parameter from the Latest Type Ia Supernovae Gold Dataset  

E-Print Network (OSTI)

In this paper, a parameterized deceleration parameter $q(z)= 1/2 - a/(1 + z)^b$ is reconstructed from the latest type Ia supernovae gold dataset. It is found out that the transition redshift from decelerated expansion to accelerated expansion is at $z_T=0.35^{+0.14}_{-0.07}$ with $1\\sigma$ confidence level in this parameterized deceleration parameter. And, the best fit values of parameters in $1\\sigma$ errors are $a=1.56^{+0.99}_{-0.55}$ and $b=3.82^{+3.70}_{-2.27}$.

Lixin Xu; Chengwu Zhang; Baorong Chang; Hongya Liu

2007-01-17T23:59:59.000Z

182

On the Stability of Thermonuclear Burning Fronts in Type Ia Supernovae  

E-Print Network (OSTI)

The propagation of cellularly stabilized thermonuclear flames is investigated by means of numerical simulations. In Type Ia supernova explosions the corresponding burning regime establishes at scales below the Gibson length. The cellular flame stabilization - which is a result of an interplay between the Landau-Darrieus instability and a nonlinear stabilization mechanism - is studied for the case of propagation into quiescent fuel as well as interaction with vortical fuel flows. Our simulations indicate that in thermonuclear supernova explosions stable cellular flames develop around the Gibson scale and that deflagration-to-detonation transition is unlikely to be triggered from flame evolution effects here.

F. K. Roepke; W. Hillebrandt

2004-04-26T23:59:59.000Z

183

Unbiased Estimate of Dark Energy Density from Type Ia Supernova Data  

Science Journals Connector (OSTI)

Type Ia supernovae (SNe Ia) are currently the best probes of the dark energy in the universe. To constrain the nature of dark energy, we assume a flat universe and that the weak energy condition is satisfied, and we allow the density of dark energy, ?X(z), to be an arbitrary function of redshift. Using simulated data from a space-based SN pencil-beam survey, we find that by optimizing the number of parameters used to parameterize the dimensionless dark energy density, f(z) = ?X(z)/?X(z = 0), we can obtain an unbiased estimate of both f(z) and the fractional matter density of the universe, ?m. A plausible SN pencil-beam survey (with a square degree field of view and for an observational duration of 1 yr) can yield about 2000 SNe Ia with 0 ? z ? 2. Such a survey in space would yield SN peak luminosities with a combined intrinsic and observational dispersion of ?(mint) = 0.16 mag. We find that for such an idealized survey, ?m can be measured to 10% accuracy, and the dark energy density can be estimated to ~20% to z ~ 1.5, and ~20%-40% to z ~ 2, depending on the time dependence of the true dark energy density. Dark energy densities that vary more slowly can be more accurately measured. For the anticipated Supernova/Acceleration Probe (SNAP) mission, ?m can be measured to 14% accuracy, and the dark energy density can be estimated to ~20% to z ~ 1.2. Our results suggest that SNAP may gain much sensitivity to the time dependence of the dark energy density and ?m by devoting more observational time to the central pencil-beam fields to obtain more SNe Ia at z > 1.2. We use both a maximum likelihood analysis and a Monte Carlo analysis (when appropriate) to determine the errors of estimated parameters. We find that the Monte Carlo analysis gives a more accurate estimate of the dark energy density than the maximum likelihood analysis.

Yun Wang; Geoffrey Lovelace

2001-01-01T23:59:59.000Z

184

One-dimensional delayed-detonation models of Type Ia supernovae: Confrontation to observations at bolometric maximum  

E-Print Network (OSTI)

The delayed-detonation explosion mechanism applied to a Chandrasekhar-mass white dwarf offers a very attractive model to explain the inferred characteristics of Type Ia supernovae (SNe Ia). The resulting ejecta are chemically stratified, have the same mass and roughly the same asymptotic kinetic energy, but exhibit a range in 56Ni mass. We investigate the contemporaneous photometric and spectroscopic properties of a sequence of delayed-detonation models, characterized by 56Ni masses between 0.18 and 0.81 Msun. Starting at 1d after explosion, we perform the full non-LTE, time-dependent radiative transfer with the code CMFGEN, with an accurate treatment of line blanketing, and compare our results to SNe Ia at bolometric maximum. Despite the 1D treatment, our approach delivers an excellent agreement to observations. We recover the range of SN Ia luminosities, colours, and spectral characteristics from the near-UV to 1 micron, for standard as well as low-luminosity 91bg-like SNe Ia. Our models predict an increase...

Blondin, Stphane; Hillier, D John; Khokhlov, Alexei M

2012-01-01T23:59:59.000Z

185

The p-Process in the Carbon Deflagration Model for Type Ia Supernovae and Chronology of the Solar System Formation  

SciTech Connect

We study nucleosynthesis of p-nuclei in the carbon deflagration model for Type Ia supernovae (SNe Ia) by assuming that seed nuclei are produced by the s-process in accreting layers on a carbon-oxygen white dwarf during mass accretion from a binary companion. We find that about 50 % of the p-nuclides are synthesized in proportion to the solar abundance and that p-isotopes of Mo and Ru which are significantly underproduced in Type II supernovae (SNe II) are produced up to a level close to other p-nuclei. Comparing the yields of iron and p-nuclei in SNe Ia we find that SNe Ia can contribute to the galactic evolution of the p-nuclei. Next, we consider nucleochronology of the solar system formation by using four radioactive nuclides and apply the result of the p-process nucleosynthesis to simple galactic chemical evolution models. We find that when assumed three phases of interstellar medium are mixed by the interdiffusion with the timescale of about 40 Myr 53Mn/55Mn value in the early solar system is consistent with a meteoritic value. In addition, we put constraints to a scenario that SNe Ia induce the core collapse of the molecular cloud, which leads to the formation of the solar system.

Kusakabe, Motohiko [Department of Astronomy, School of Science, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033 (Japan); National Astronomical Observatory of Japan, Mitaka, Tokyo 181-8588 (Japan); Iwamoto, Nobuyuki [Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195 (Japan); Nomoto, Ken'ichi [Department of Astronomy, School of Science, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033 (Japan)

2006-07-12T23:59:59.000Z

186

Stable isotope-assisted NMR characterization of interaction between lipid A and sarcotoxin IA, a cecropin-type antibacterial peptide  

SciTech Connect

Highlights: ? Recombinant sarcotoxin IA was successfully produced with {sup 13}C- and {sup 15}N-labeling. ? Sarcotoxin IA adopts an N-terminal ?-helix upon binding to lipid A-embedding micelles. ? Two lysine residues are involved in lipid A-mediated antibacterial activities. -- Abstract: Sarcotoxin IA is a 39-residue cecropin-type peptide from Sarcophaga peregrina. This peptide exhibits antibacterial activity against Gram-negative bacteria through its interaction with lipid A, a core component of lipopolysaccharides. To acquire detailed structural information on this specific interaction, we performed NMR analysis using bacterially expressed sarcotoxin IA analogs with {sup 13}C- and {sup 15}N-labeling along with lipid A-embedding micelles composed of dodecylphosphocholine. By inspecting the stable isotope-assisted NMR data, we revealed that the N-terminal segment (Leu3Arg18) of sarcotoxin IA formed an amphiphilic ?-helix upon its interaction with the aqueous micelles. Furthermore, chemical shift perturbation data indicated that the amino acid residues displayed on this ?-helix were involved in the specific interaction with lipid A. On the basis of these data, we successfully identified Lys4 and Lys5 as key residues in the interaction with lipid A and the consequent antibacterial activity. Therefore, these results provide unique information for designing chemotherapeutics based on antibacterial peptide structures.

Yagi-Utsumi, Maho [Institute for Molecular Science and Okazaki Institute for Integrative Bioscience, National Institutes of Natural Sciences, Okazaki 444-8787 (Japan) [Institute for Molecular Science and Okazaki Institute for Integrative Bioscience, National Institutes of Natural Sciences, Okazaki 444-8787 (Japan); Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya 467-8603 (Japan); Yamaguchi, Yoshiki [Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya 467-8603 (Japan) [Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya 467-8603 (Japan); Advanced Science Institute, RIKEN, Wako 351-0198 (Japan); Boonsri, Pornthip [Institute for Molecular Science and Okazaki Institute for Integrative Bioscience, National Institutes of Natural Sciences, Okazaki 444-8787 (Japan) [Institute for Molecular Science and Okazaki Institute for Integrative Bioscience, National Institutes of Natural Sciences, Okazaki 444-8787 (Japan); Department of Chemistry, Faculty of Science, Kasetsart University, Bangkok 10900 (Thailand); Iguchi, Takeshi [Bioscience Research Laboratory, Fujiya Co., Ltd., Hadano, Kanagawa 257-0031 (Japan)] [Bioscience Research Laboratory, Fujiya Co., Ltd., Hadano, Kanagawa 257-0031 (Japan); Okemoto, Kazuo [Department of Biochemistry and Cell Biology, National Institute of Infectious Disease, Tokyo 162-8640 (Japan)] [Department of Biochemistry and Cell Biology, National Institute of Infectious Disease, Tokyo 162-8640 (Japan); Natori, Shunji [National Institute of Agrobiological Sciences, Tsukuba 305-8602 (Japan)] [National Institute of Agrobiological Sciences, Tsukuba 305-8602 (Japan); Kato, Koichi, E-mail: kkatonmr@ims.ac.jp [Institute for Molecular Science and Okazaki Institute for Integrative Bioscience, National Institutes of Natural Sciences, Okazaki 444-8787 (Japan) [Institute for Molecular Science and Okazaki Institute for Integrative Bioscience, National Institutes of Natural Sciences, Okazaki 444-8787 (Japan); Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya 467-8603 (Japan); The Glycoscience Institute, Ochanomizu University, Tokyo 135-0064 (Japan); GLYENCE Co., Ltd., Nagoya 474-0858 (Japan)

2013-02-08T23:59:59.000Z

187

Rsultats long terme de limplantation phaque de chambre postrieure pour la correction des amtropies fortes  

Science Journals Connector (OSTI)

RsumObjectif valuer lefficacit, la stabilit et la scurit de limplantation phaque de chambre postrieure laide de limplant Visian ICL STAAR dans le traitement des amtropies fortes avec un recul moyen de cinq ans (de 3,5 dix ans). Patients et mthodes Nous avons ralis une tude rtrospective monocentrique portant sur 90yeux de 53patients amtropes forts (45myopes, dix hypermtropes, 35prsentant un astigmatisme combin) oprs par un seul chirurgien, en utilisant principalement le modle ICL V4 (87yeux). Nous avons valu en pr- et postopratoire les principaux critres defficacit rfractive, la densit cellulaire endothliale, lopacification cristallinienne et les dimensions des diffrents compartiments intraoculaires. Rsultats Lacuit visuelle sans correction moyenne atteint 0,77au 12emois postopratoire; 17des 90yeux ont bnfici dun traitement photoablatif complmentaire pour astigmatisme rsiduel. Quarante-huit pour cent des yeux implants ont gagn au moins une ligne de meilleure acuit visuelle corrige. Aprs limplantation, la diminution de la densit cellulaire endothliale est reste stable 0,69%/an, et 91% des yeux nont pas prsent dopacification cristallinienne. Les distances moyennes endothlium/ICL et ICL/cristallin ont respectivement t mesures 2,41mm et 0,52mm. Enfin, le niveau de satisfaction des patients atteints 96% au 36emois postopratoire. Conclusion Les rsultats sont en faveur de lefficacit, la stabilit et la scurit de limplant phaque ICL V4dans le traitement des amtropies fortes. Le suivi au long cours na pas mis en vidence daugmentation significative dincidence de cataracte dans les yeux oprs. SummaryPurpose To assess efficacy, stability and safety of posterior chamber phakic intraocular lens implantation with STAAR Visian ICL for correction of high ametropia, with a mean follow-up of 5years (3.510years). Patients and methods Ninety eyes of 53 highly ametropic patients (45 myopia, ten hyperopia and 35 with mixed astigmatism) were included in a retrospective single-surgeon study, using primarily the V4 ICL model (87 eyes). We studied pre- and postoperative refractive efficacy, endothelial cell density, crystalline lens opacification and intraocular clearances within the various compartments of the eye. Results Mean uncorrected visual acuity was 0.77 at the 12th postoperative month; 17 of 90 eyes required adjunctive photoablation for residual astigmatism. Forty-eight percent of eyes gained at least one line of best corrected visual acuity. After implantation, the decrease in endothelial cell density remained stable at 0.69%/year, and 91% of eyes showed no opacification of the crystalline lens. Mean endothelium-ICL and ICL-crystalline lens distances were 2.41mm and 0.52mm respectively. Overall patient satisfaction achieved was 96% at 36months postoperatively. Discussion and conclusion These results demonstrate efficacy, stability and safety of the ICL V4 phakic IOL for the correction of high ametropia. Long-term follow-up did not show a significant increase in cataract formation in implanted eyes.

M. Le Loir; B. Cochener

2012-01-01T23:59:59.000Z

188

ENREGISTREMENT DES MICROPULSATIONS GOMAGNTIQUES UTILISANT DES MAGNTOMTRES A NOYAU SATUR  

E-Print Network (OSTI)

et sovié- tiques [4], pour mesurer le champ magnétique de l'espace extra-terrestre, de grandeur. 2014 On présente une installation d'enregistrement des micropulsations du champ magnétique terrestre

Paris-Sud XI, Université de

189

Inference for the dark energy equation of state using Type IA supernova data  

E-Print Network (OSTI)

The surprising discovery of an accelerating universe led cosmologists to posit the existence of "dark energy"--a mysterious energy field that permeates the universe. Understanding dark energy has become the central problem of modern cosmology. After describing the scientific background in depth, we formulate the task as a nonlinear inverse problem that expresses the comoving distance function in terms of the dark-energy equation of state. We present two classes of methods for making sharp statistical inferences about the equation of state from observations of Type Ia Supernovae (SNe). First, we derive a technique for testing hypotheses about the equation of state that requires no assumptions about its form and can distinguish among competing theories. Second, we present a framework for computing parametric and nonparametric estimators of the equation of state, with an associated assessment of uncertainty. Using our approach, we evaluate the strength of statistical evidence for various competing models of dark energy. Consistent with current studies, we find that with the available Type Ia SNe data, it is not possible to distinguish statistically among popular dark-energy models, and that, in particular, there is no support in the data for rejecting a cosmological constant. With much more supernova data likely to be available in coming years (e.g., from the DOE/NASA Joint Dark Energy Mission), we address the more interesting question of whether future data sets will have sufficient resolution to distinguish among competing theories.

Christopher Genovese; Peter Freeman; Larry Wasserman; Robert Nichol; Christopher Miller

2008-05-27T23:59:59.000Z

190

Flame-driven deflagration-to-detonation transitions in Type Ia supernovae?  

E-Print Network (OSTI)

Although delayed detonation models of thermonuclear explosions of white dwarfs seem promising for reproducing Type Ia supernovae, the transition of the flame propagation mode from subsonic deflagration to supersonic detonation remains hypothetical. A potential instant for this transition to occur is the onset of the distributed burning regime, i.e. the moment when turbulence first affects the internal flame structure. Some studies of the burning microphysics indicate that a deflagration-to-detonation transition may be possible here, provided the turbulent intensities are strong enough. Consequently, the magnitude of turbulent velocity fluctuations generated by the deflagration flame is analyzed at the onset of the distributed burning regime in several three-dimensional simulations of deflagrations in thermonuclear supernovae. It is shown that the corresponding probability density functions fall off towards high turbulent velocity fluctuations much more slowly than a Gaussian distribution. Thus, values claimed to be necessary for triggering a detonation are likely to be found in sufficiently large patches of the flame. Although the microphysical evolution of the burning is not followed and a successful deflagration-to-detonation transition cannot be guaranteed from simulations presented here, the results still indicate that such events may be possible in Type Ia supernova explosions.

F. K. Roepke

2007-09-26T23:59:59.000Z

191

Flame Evolution During Type Ia Supernovae and the Deflagration Phase in the Gravitationally Confined Detonation Scenario  

E-Print Network (OSTI)

We develop an improved method for tracking the nuclear flame during the deflagration phase of a Type Ia supernova, and apply it to study the variation in outcomes expected from the gravitationally confined detonation (GCD) paradigm. A simplified 3-stage burning model and a non-static ash state are integrated with an artificially thickened advection-diffusion-reaction (ADR) flame front in order to provide an accurate but highly efficient representation of the energy release and electron capture in and after the unresolvable flame. We demonstrate that both our ADR and energy release methods do not generate significant acoustic noise, as has been a problem with previous ADR-based schemes. We proceed to model aspects of the deflagration, particularly the role of buoyancy of the hot ash, and find that our methods are reasonably well-behaved with respect to numerical resolution. We show that if a detonation occurs in material swept up by the material ejected by the first rising bubble but gravitationally confined to the white dwarf (WD) surface (the GCD paradigm), the density structure of the WD at detonation is systematically correlated with the distance of the deflagration ignition point from the center of the star. Coupled to a suitably stochastic ignition process, this correlation may provide a plausible explanation for the variety of nickel masses seen in Type Ia Supernovae.

D. M. Townsley; A. C. Calder; S. M. Asida; I. R. Seitenzahl; F. Peng; N. Vladimirova; D. Q. Lamb; J. W. Truran

2007-06-07T23:59:59.000Z

192

Constraining a bulk viscous matter-dominated cosmological model using SNe Ia, CMB and LSS  

E-Print Network (OSTI)

We present and constrain a cosmological model which component is a pressureless fluid with bulk viscosity as an explanation for the present accelerated expansion of the universe. We study the particular model of a constant bulk viscosity coefficient \\zeta_m. The possible values of \\zeta_m are constrained using the cosmological tests of SNe Ia Gold 2006 sample, the CMB shift parameter R from the three-year WMAP observations, the Baryon Acoustic Oscillation (BAO) peak A from the Sloan Digital Sky Survey (SDSS) and the Second Law of Thermodynamics (SLT). It was found that this model is in agreement with the SLT using only the SNe Ia test. However when the model is submitted to the three cosmological tests together (SNe+CMB+BAO) the results are: 1.- the model violates the SLT, 2.- predicts a value of H_0 \\approx 53 km sec^{-1} Mpc^{-1} for the Hubble constant, and 3.- we obtain a bad fit to data with a \\chi^2_{min} \\approx 400 (\\chi^2_{d.o.f.} \\approx 2.2). These results indicate that this model is ruled out by the observations.

Arturo Avelino; U. Nucamendi; F. S. Guzmn

2008-01-10T23:59:59.000Z

193

Parametrizing the transition to the phantom epoch with Supernovae Ia and Standard Rulers  

E-Print Network (OSTI)

The properties of some particular parametrizations of the dark energy Equation of State (EoS) are studied by using Supernovae Ia data (HST Cluster Supernova Survey) combined with Standard Ruler datasets (Cosmic Microwave Background (CMB) and Baryon Acoustic Oscillations (BAO)). In this sense, we propose some parametrizations that may present a (fast) transition to a phantom dark energy EoS (where $w_{DE}<-1$) and compare the results with the $\\Lambda$CDM model. The best fit of the models is obtained by using Sne Ia and Standard Ruler datasets, which provides some information about whether the phantom transition may be supported by the observations. In this regard, the crossing of the phantom barrier is allowed statistically but the occurrence of a future singularity seems unlikely. Furthermore, the reconstruction of a (non-)canonical scalar field Lagrangian from the EoS parameter is studied, where shown that EoS parametrizations can be well reconstructed in terms of scalar fields.

Leanizbarrutia, Iker

2014-01-01T23:59:59.000Z

194

Verifying the Cosmological Utility of Type Ia Supernovae:Implications of a Dispersion in the Ultraviolet Spectra  

SciTech Connect

We analyze the mean rest-frame ultraviolet (UV) spectrum ofType Ia Supernovae(SNe) and its dispersion using high signal-to-noiseKeck-I/LRIS-B spectroscopyfor a sample of 36 events at intermediateredshift (z=0.5) discoveredby the Canada-France-Hawaii TelescopeSupernova Legacy Survey (SNLS). Weintroduce a new method for removinghost galaxy contamination in our spectra,exploiting the comprehensivephotometric coverage of the SNLS SNe and theirhost galaxies, therebyproviding the first quantitative view of the UV spectralproperties of alarge sample of distant SNe Ia. Although the mean SN Ia spectrumhas notevolved significantly over the past 40 percent of cosmic history,preciseevolutionary constraints are limited by the absence of acomparable sample ofhigh quality local spectra. The mean UV spectrum ofour z 0.5 SNe Ia and itsdispersion is tabulated for use in futureapplications. Within the high-redshiftsample, we discover significant UVspectral variations and exclude dust extinctionas the primary cause byexamining trends with the optical SN color. Although progenitormetallicity may drive some of these trends, the variations we see aremuchlarger than predicted in recent models and do not follow expectedpatterns.An interesting new result is a variation seen in the wavelengthof selected UVfeatures with phase. We also demonstrate systematicdifferences in the SN Iaspectral features with SN lightcurve width inboth the UV and the optical. Weshow that these intrinsic variations couldrepresent a statistical limitation in thefuture use of high-redshift SNeIa for precision cosmology. We conclude thatfurther detailed studies areneeded, both locally and at moderate redshift wherethe rest-frame UV canbe studied precisely, in order that future missions canconfidently beplanned to fully exploit SNe Ia as cosmological probes.

Ellis, R.S.; Sullivan, M.; Nugent, P.E.; Howell, D.A.; Gal-Yam,A.; Astier, P.; Balam, D.; Balland, C.; Basa, S.; Carlberg, R.G.; Conley,A.; Fouchez, D.; Guy, J.; Hardin, D.; Hook, I.; Pain, R.; Perrett, K.; Pritchet, C.J.; Regnault, N.

2007-11-02T23:59:59.000Z

195

CIMAT, VIII Escuela de verano, 30 de julio -10 de ago* Introducci'on a la Geometr'ia de la Mec'ani*  

E-Print Network (OSTI)

conservativo. 18.Sea A(E) el 'area dentro de una curva de fase cerrada que corresponde a nive* *l de energ'ia Introducci'on a la Geometr'ia de la Mec'ani* *ca Cl'asica Problemas 13 - 19

Bor, Gil

196

valuation prospective des effets du stage dinitiation pratique sur le recrutement des internes durologie Paris : rsultats dfinitifs  

Science Journals Connector (OSTI)

ResumeObjectifs valuer les effets dun stage dinitiation pratique lurologie sur le recrutement des internes parisiens depuis la mise en place de lExamen National Classant (ENC). Matriels et mthodes Depuis 2004, tous les internes nomms en chirurgie Paris ont particip un stage dinitiation lurologie avant de prendre leur fonction hospitalire. Un questionnaire leur a t remis. Lenqute prospective sest intresse : lge, le sexe, lexistence dun stage durologie pendant lexternat et au souhait dorientation au sein des 11 disciplines chirurgicales. Les internes ont t recontacts annuellement pour connatre lvolution de leur orientation professionnelle. Rsultats Population. Deux cent cinquante cinq internes ont particip dont 145 femmes (56,9%) et 110 hommes (43,1%). Lge moyen tait de 24,6 5 ans (22-31). 173 internes taient issus dun CHU parisien (67,8%) et 82 (32,2%) dun CHU de province. Cinquante deux internes (21,2%) avaient effectu au moins un stage dans un service durologie pendant leur externat. Disciplines chirurgicales. Lorthopdie a t le plus souvent cite (n=48; 28,9%). Lurologie a t choisie par 32 internes (12,5%) qui avaient effectu un stage dexterne dans la spcialit dans 28 cas. la fin du stage, 18 internes taient tents par lurologie. un an, 31 internes134 (91,2%) ont confirm leur choix pour Iurologie. Conclusion La ralisation dun stage pratique intervenant trs tt dans la formation des jeunes chirurgiens est une bonne solution pour les initier a lurologie. En bnficiant dun choix clair, les internes les plus motives sont incits rejoindre volontairement notre discipline. SummaryObjectives To evaluate the effects of a practical introduction to urology session on the recruitment of Parisian interns since introduction of the National Classljjing Examination. Materials and methods Since 2004, all surgery interns appointed in Paris have participated in a practical introduction to urology session before starting work in hospital. They were asked to complete a questionnaire. The prospective survey studied: age, gender, urology training as a medical student and the intern's preferences in relation to 11 surgical specialties. Interns were recontacted annually to determine their choice of specialization. Results Population. 255 interns participated, including 145 females (56.9%) and 110 maies (43.1%). The mean age was 24.6 5 years (range: 22-31). 173 interns were attached to a Parisian teaching hospital (67.8%) and 82 (32.2%) were attached to a provincial teaching hospital. 52 interns (21.2%) had completed at least one attachment in a urology department during their medical training. Surgical specialties. Orthopaedics was most frequently listed (n = 48 ; 28.9%). Urology was chosen by 32 interns (12.5%), 28 of whom had completed an urology attachment during their medical training. At the end of the introductory training sessions, 18 interns were tempted by urology. At one year, 31/34 interns (91.2%) confirmed their choice in favour of urology. Conclusion A practical training sessions very early in the training of young surgeons is a good solution to introduce them to urology. Based on a more informed choice, the most motivated interns are encouraged to preferentially choose this discipline.

Graldine Pignot; Sbastien Beley; Stphane Larr; Francis Dubosq; Ambroise Salin; Baptiste Albouy; Pascal Simon; Emmanuel Rolland; Emmanuel Chartier-Kastler; Franois Richard; Morgan Rouprt

2007-01-01T23:59:59.000Z

197

Iowa Department of Economic Development | Open Energy Information  

Open Energy Info (EERE)

Iowa Department of Economic Development Place: Des Moines, Iowa Zip: 50309 Product: Iowa economic development agency. References: Iowa Department of Economic Development1 This...

198

SEP News | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

the Superior Energy Performance (SEP) program September 18, 2014 Iowa Water and Wastewater Operators Seek SEP Certification in New Pilot Program The Des Moines Metropolitan...

199

LATE-TIME SPECTRAL OBSERVATIONS OF THE STRONGLY INTERACTING TYPE Ia SUPERNOVA PTF11kx  

SciTech Connect

PTF11kx was a Type Ia supernova (SN Ia) that showed time-variable absorption features, including saturated Ca II H and K lines that weakened and eventually went into emission. The strength of the emission component of H{alpha} gradually increased, implying that the SN was undergoing significant interaction with its circumstellar medium (CSM). These features, and many others, were blueshifted slightly and showed a P-Cygni profile, likely indicating that the CSM was directly related to, and probably previously ejected by, the progenitor system itself. These and other observations led Dilday et al. to conclude that PTF11kx came from a symbiotic nova progenitor like RS Oph. In this work we extend the spectral coverage of PTF11kx to 124-680 rest-frame days past maximum brightness. The late-time spectra of PTF11kx are dominated by H{alpha} emission (with widths of full width at half-maximum intensity Almost-Equal-To 2000 km s{sup -1}), strong Ca II emission features ({approx}10,000 km s{sup -1} wide), and a blue 'quasi-continuum' due to many overlapping narrow lines of Fe II. Emission from oxygen, He I, and Balmer lines higher than H{alpha} is weak or completely absent at all epochs, leading to large observed H{alpha}/H{beta} intensity ratios. The H{alpha} emission appears to increase in strength with time for {approx}1 yr, but it subsequently decreases significantly along with the Ca II emission. Our latest spectrum also indicates the possibility of newly formed dust in the system as evidenced by a slight decrease in the red wing of H{alpha}. During the same epochs, multiple narrow emission features from the CSM temporally vary in strength. The weakening of the H{alpha} and Ca II emission at late times is possible evidence that the SN ejecta have overtaken the majority of the CSM and agrees with models of other strongly interacting SNe Ia. The varying narrow emission features, on the other hand, may indicate that the CSM is clumpy or consists of multiple thin shells.

Silverman, Jeffrey M. [Department of Astronomy, University of Texas, Austin, TX 78712-0259 (United States); Nugent, Peter E.; Filippenko, Alexei V.; Cenko, S. Bradley [Department of Astronomy, University of California, Berkeley, CA 94720-3411 (United States); Gal-Yam, Avishay [Benoziyo Center for Astrophysics, The Weizmann Institute of Science, Rehovot 76100 (Israel); Sullivan, Mark [School of Physics and Astronomy, University of Southampton, Southampton SO17 1BJ (United Kingdom); Howell, D. Andrew [Las Cumbres Observatory Global Telescope Network, Goleta, CA 93117 (United States); Pan, Yen-Chen; Hook, Isobel M., E-mail: jsilverman@astro.as.utexas.edu [Department of Physics (Astrophysics), University of Oxford, Keble Road, Oxford OX1 3RH (United Kingdom)

2013-08-01T23:59:59.000Z

200

L'importance des probabilits a priori pour la recherche des pages d'entre1  

E-Print Network (OSTI)

Search », Proceedings of the 25th annual international ACM SIGIR Conference on Research and Cevelopment structure des liens, les URL et les textes d'ancrage sont des sources intéressantes d'information pour la

Hiemstra, Djoerd

Note: This page contains sample records for the topic "des moines ia" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
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We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

Simulation des plasmas de tokamak avec XTOR : rgimes des dents de scie et volution vers une modlisation cintique des ions.  

E-Print Network (OSTI)

??Nous prsentons une tude numrique des dents de scie dans un plasma de tokamak ohmique avec le code XTOR-2F. Cette tude est notre connaissance (more)

David, Leblond

2011-01-01T23:59:59.000Z

202

Partager : des technologies de pointe au service de la socit  

ScienceCinema (OSTI)

Mdecine, climatologie, mtrologie et informatique, les techniques utilises par le LHC trouvent dj des rpercussions dans d?autres domaines scientifiques. Utilisant des techniques indites, la physique des particules en fait bnficier la socit toute entire.

None

2011-10-06T23:59:59.000Z

203

Introduction L'Encyclopdie des Carabes ou Encyclopdie des Kali'na du Suriname  

E-Print Network (OSTI)

Introduction « L'Encyclopédie des Caraïbes » ou Encyclopédie des Kali'na du Suriname Odile Renault Suriname, jusqu'à la deuxième moitié du 20ème siècle5, pour désigner les peuples et langues de famille étude comparée des langues de la famille caribe du Suriname, ainsi que des descriptions grammaticales et

Boyer, Edmond

204

Type Ia supernova diversity: white dwarf central density as a secondary parameter in three-dimensional delayed detonation models  

Science Journals Connector (OSTI)

......function of redshift. The standard model of SNe Ia relies on the nuclear fusion of the initial composition (predominantly 12C and 16O) of...generated from a Monte Carlo based algorithm. The primary input parameters are the number of the ignition kernels and the......

I. R. Seitenzahl; F. Ciaraldi-Schoolmann; F. K. Rpke

2011-07-01T23:59:59.000Z

205

EARLY RADIO AND X-RAY OBSERVATIONS OF THE YOUNGEST NEARBY TYPE Ia SUPERNOVA PTF 11kly (SN 2011fe)  

SciTech Connect

On 2011 August 24 (UT) the Palomar Transient Factory (PTF) discovered PTF11kly (SN 2011fe), the youngest and most nearby Type Ia supernova (SN Ia) in decades. We followed this event up in the radio (centimeter and millimeter bands) and X-ray bands, starting about a day after the estimated explosion time. We present our analysis of the radio and X-ray observations, yielding the tightest constraints yet placed on the pre-explosion mass-loss rate from the progenitor system of this supernova. We find a robust limit of M-dot {approx}<10{sup -8}(w/100 km s{sup -1}) M{sub sun} yr{sup -1} from sensitive X-ray non-detections, as well as a similar limit from radio data, which depends, however, on assumptions about microphysical parameters. We discuss our results in the context of single-degenerate models for SNe Ia and find that our observations modestly disfavor symbiotic progenitor models involving a red giant donor, but cannot constrain systems accreting from main-sequence or sub-giant stars, including the popular supersoft channel. In view of the proximity of PTF11kly and the sensitivity of our prompt observations, we would have to wait for a long time (a decade or longer) in order to more meaningfully probe the circumstellar matter of SNe Ia.

Horesh, Assaf; Kulkarni, S. R.; Carpenter, John; Kasliwal, Mansi M.; Ofek, Eran O. [Cahill Center for Astrophysics, California Institute of Technology, Pasadena, CA 91125 (United States); Fox, Derek B. [Astronomy and Astrophysics, Eberly College of Science, Pennsylvania State University, University Park, PA 16802 (United States); Quimby, Robert [IPMU, University of Tokyo, Kashiwanoha 5-1-5, Kashiwa-shi, Chiba (Japan); Gal-Yam, Avishay [Benoziyo Center for Astrophysics, Faculty of Physics, Weizmann Institute of Science, Rehovot 76100 (Israel); Cenko, S. Bradley [Department of Astronomy, University of California, Berkeley, CA 94720-3411 (United States); De Bruyn, A. G. [Netherlands Institute for Radio Astronomy (ASTRON), Postbus 2, NL-7990 AA Dwingeloo (Netherlands); Kamble, Atish; Wijers, Ralph A. M. J. [Center for Gravitation and Cosmology, University of Wisconsin, Milwaukee, WI 53211 (United States); Van der Horst, Alexander J. [Universities Space Research Association, NSSTC, Huntsville, AL 35805 (United States); Kouveliotou, Chryssa [Space Science Office, VP-62, NASA-Marshall Space Flight Center, Huntsville, AL 35805 (United States); Podsiadlowski, Philipp; Sullivan, Mark; Maguire, Kate [Department of Physics (Astrophysics), University of Oxford, Keble Road, Oxford OX1 3RH (United Kingdom); Howell, D. Andrew [Las Cumbres Observatory Global Telescope Network, Santa Barbara, CA 93117 (United States); Nugent, Peter E. [Computational Cosmology Center, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720 (United States); Gehrels, Neil [NASA-Goddard Space Flight Center, Greenbelt, MD 20771 (United States); and others

2012-02-10T23:59:59.000Z

206

Experto Universitario Java Enterprise Validacin e internacionalizacin 2012-2013 Depto. Ciencia de la Computacin e IA Spring  

E-Print Network (OSTI)

Experto Universitario Java Enterprise Validación e internacionalización © 2012-2013 Depto. Ciencia #12;Experto Universitario Java Enterprise Validación e internacionalización © 2012-2013 Depto. Ciencia Java Enterprise Validación e internacionalización © 2012-2013 Depto. Ciencia de la Computación e IA

Escolano, Francisco

207

TheThe ScienceScience ForumForum (as I(as I picturepicture itit)) Scholarly work  

E-Print Network (OSTI)

#12;Robotics TheThe ScienceScience ForumForum (as I(as I picturepicture itit)) Humanities Scholarly of photonics, robotics, telematics, dynamic physical rendering and intelligent sensors served as the basis to inspire four bestselling authors. The results are four short stories which paint amusing, thought

Torras, Carme

208

EXCELLENTIA CoLumbIA ENgINEErINg66 echanical engineers think about the design, construction, material proper-  

E-Print Network (OSTI)

responsibility for understanding how engines work, how buildings can be more efficiently built, and howHEALTH EXCELLENTIA CoLumbIA ENgINEErINg66 M echanical engineers think about the design the environment affects bridge architecture. They also apply their knowledge to the workings of the human body

Hone, James

209

ANALYSIS OF LIMIT CYCLE STABILITY IN A TAP-CHANGING TRANSFORMER V. Donde I.A. Hiskens  

E-Print Network (OSTI)

ANALYSIS OF LIMIT CYCLE STABILITY IN A TAP-CHANGING TRANSFORMER V. Donde I.A. Hiskens Department of transformer tap changing and load dynamics. Lin- earization of a Poincar´e map is used to prove local of the region of attraction can then be obtained. 1. INTRODUCTION Interactions between tap-changing transformers

Hiskens, Ian A.

210

A Precision Photometric Comparison between SDSS-II and CSP Type Ia Supernova Data  

E-Print Network (OSTI)

Consistency between Carnegie Supernova Project (CSP) and SDSS-II supernova (SN) survey ugri measurements has been evaluated by comparing SDSS and CSP photometry for nine spectroscopically confirmed Type Ia supernova observed contemporaneously by both programs. The CSP data were transformed into the SDSS photometric system. Sources of systematic uncertainty have been identified, quantified, and shown to be at or below the 0.023 magnitude level in all bands. When all photometry for a given band is combined, we find average magnitude differences of equal to or less than 0.011 magnitudes in ugri, with rms scatter ranging from 0.043 to 0.077 magnitudes. The u band agreement is promising, with the caveat that only four of the nine supernovae are well-observed in u and these four exhibit an 0.038 magnitude supernova-to-supernova scatter in this filter.

Mosher, J; Corlies, L; Folatelli, G; Frieman, J; Holtzman, J; Jha, S W; Kessler, R; Marriner, J; Phillips, M M; Stritzinger, M; Morrell, N; Schneider, D P

2012-01-01T23:59:59.000Z

211

Beyond the bubble catastrophe of Type Ia supernovae: Pulsating Reverse Detonation models  

E-Print Network (OSTI)

We describe a mechanism by which a failed deflagration of a Chandrasekhar-mass carbon-oxygen white dwarf can turn into a successful thermonuclear supernova explosion, without invoking an ad hoc high-density deflagration-detonation transition. Following a pulsating phase, an accretion shock develops above a core of 1 M_sun composed of carbon and oxygen, inducing a converging detonation. A three-dimensional simulation of the explosion produced a kinetic energy of 1.05E51 ergs and 0.70 M_sun of 56Ni, ejecting scarcely 0.01 M_sun of C-O moving at low velocities. The mechanism works under quite general conditions and is flexible enough to account for the diversity of normal Type Ia supernovae. In given conditions the detonation might not occur, which would reflect in peculiar signatures in the gamma and UV-wavelengths

Eduardo Bravo; Domingo Garcia-Senz

2006-04-03T23:59:59.000Z

212

Sensitivity study of explosive nucleosynthesis in type Ia supernovae: Modification of individual thermonuclear reaction rates  

Science Journals Connector (OSTI)

Background: Type Ia supernovae contribute significantly to the nucleosynthesis of many Fe-group and intermediate-mass elements. However, the robustness of nucleosynthesis obtained via models of this class of explosions has not been studied in depth until now.Purpose: We explore the sensitivity of the nucleosynthesis resulting from thermonuclear explosions of massive white dwarfs with respect to uncertainties in nuclear reaction rates. We put particular emphasis on indentifying the individual reactions rates that most strongly affect the isotopic products of these supernovae.Method: We have adopted a standard one-dimensional delayed detonation model of the explosion of a Chandrasekhar-mass white dwarf and have postprocessed the thermodynamic trajectories of every mass shell with a nucleosynthetic code to obtain the chemical composition of the ejected matter. We have considered increases (decreases) by a factor of 10 on the rates of 1196 nuclear reactions (simultaneously with their inverse reactions), repeating the nucleosynthesis calculations after modification of each reaction rate pair. We have computed as well hydrodynamic models for different rates of the fusion reactions of 12C and of 16O. From the calculations we have selected the reactions that have the largest impact on the supernova yields, and we have computed again the nucleosynthesis using two or three alternative prescriptions for their rates, taken from the JINA REACLIB database. For the three reactions with the largest sensitivity we have analyzed as well the temperature ranges where a modification of their rates has the strongest effect on nucleosynthesis.Results: The nucleosynthesis resulting from the type Ia supernova models is quite robust with respect to variations of nuclear reaction rates, with the exception of the reaction of fusion of two 12C nuclei. The energy of the explosion changes by less than ?4% when the rates of the reactions 12C+12C or 16O+16O are multiplied by a factor of 10 or 0.1. The changes in the nucleosynthesis owing to the modification of the rates of these fusion reactions are also quite modest; for instance, no species with a mass fraction larger than 0.02 experiences a variation of its yield larger than a factor of 2. We provide the sensitivity of the yields of the most abundant species with respect to the rates of the most intense reactions with protons, neutrons, and ?. In general, the yields of Fe-group nuclei are more robust than the yields of intermediate-mass elements. Among the species with yields larger than 10?8M?, 35S has the largest sensitivity to the nuclear reaction rates. It is remarkable that the reactions involving elements with Z>22 have a tiny influence on the supernova nucleosynthesis. Among the charged-particle reactions, the most influential on supernova nucleosynthesis are 30Si+p?31P+?, 20Ne+??24Mg+?, and 24Mg+??27Al+p. The temperatures at which a modification of their rate has a larger impact are in the range 2?T?4 GK.Conclusions: The explosion model (i.e., the assumed conditions and propagation of the flame) chiefly determines the element production of type Ia supernovae and derived quantities such as their luminosity, while the nuclear reaction rates used in the simulations have a small influence on the kinetic energy and final chemical composition of the ejecta. Our results show that the uncertainty in individual thermonuclear reaction rates cannot account for discrepancies of a factor of 2 between isotopic ratios in type Ia supernovae and those in the solar system, especially within the Fe group.

Eduardo Bravo and Gabriel Martnez-Pinedo

2012-05-18T23:59:59.000Z

213

A PRECISION PHOTOMETRIC COMPARISON BETWEEN SDSS-II AND CSP TYPE Ia SUPERNOVA DATA  

SciTech Connect

Consistency between Carnegie Supernova Project (CSP) and SDSS-II Supernova Survey ugri measurements has been evaluated by comparing Sloan Digital Sky Survey (SDSS) and CSP photometry for nine spectroscopically confirmed Type Ia supernova observed contemporaneously by both programs. The CSP data were transformed into the SDSS photometric system. Sources of systematic uncertainty have been identified, quantified, and shown to be at or below the 0.023 mag level in all bands. When all photometry for a given band is combined, we find average magnitude differences of equal to or less than 0.011 mag in ugri, with rms scatter ranging from 0.043 to 0.077 mag. The u-band agreement is promising, with the caveat that only four of the nine supernovae are well observed in u and these four exhibit an 0.038 mag supernova-to-supernova scatter in this filter.

Mosher, J.; Sako, M.; Corlies, L. [Department of Physics and Astronomy, University of Pennsylvania, 209 South 33rd Street, Philadelphia, PA 19104 (United States); Folatelli, G. [Institute for the Physics and Mathematics of the Universe (IPMU), University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8583 (Japan); Frieman, J.; Kessler, R. [Department of Astronomy and Astrophysics, University of Chicago, 5640 South Ellis Avenue, Chicago, IL 60637 (United States); Holtzman, J. [Department of Astronomy, MSC 4500, New Mexico State University, P.O. Box 30001, Las Cruces, NM 88003 (United States); Jha, S. W. [Department of Physics and Astronomy, Rutgers, the State University of New Jersey, 136 Frelinghuysen Road, Piscataway, NJ 08854 (United States); Marriner, J. [Center for Particle Astrophysics, Fermi National Accelerator Laboratory, P.O. Box 500, Batavia, IL 60510 (United States); Phillips, M. M.; Morrell, N. [Las Campanas Observatory, Carnegie Observatories, Casilla 601, La Serena (Chile); Stritzinger, M. [Oskar Klein Centre for Cosmo Particle Physics, AlbaNova University Center, 106 91 Stockholm (Sweden); Schneider, D. P., E-mail: jmosher@sas.upenn.edu [Department of Astronomy and Astrophysics, Pennsylvania State University, 525 Davey Laboratory, University Park, PA 16802 (United States)

2012-07-15T23:59:59.000Z

214

A Precision Photometric Comparison between SDSS-II and CSP Type Ia Supernova Data  

SciTech Connect

Consistency between Carnegie Supernova Project (CSP) and SDSS-II Supernova Survey ugri measurements has been evaluated by comparing Sloan Digital Sky Survey (SDSS) and CSP photometry for nine spectroscopically confirmed Type Ia supernova observed contemporaneously by both programs. The CSP data were transformed into the SDSS photometric system. Sources of systematic uncertainty have been identified, quantified, and shown to be at or below the 0.023 mag level in all bands. When all photometry for a given band is combined, we find average magnitude differences of equal to or less than 0.011 mag in ugri, with rms scatter ranging from 0.043 to 0.077 mag. The u-band agreement is promising, with the caveat that only four of the nine supernovae are well observed in u and these four exhibit an 0.038 mag supernova-to-supernova scatter in this filter.

Mosher, J.; /Pennsylvania U.; Sako, M.; /Pennsylvania U.; Corlies, L.; /Pennsylvania U. /Columbia U.; Folatelli, G.; /Tokyo U. /Carnegie Inst. Observ.; Frieman, J.; /Chicago U., KICP /Chicago U., Astron. Astrophys. Ctr.; Holtzman, J.; /New Mexico State U.; Jha, S.W.; /Rutgers U., Piscataway; Kessler, R.; /Chicago U., Astron. Astrophys. Ctr. /Chicago U., KICP; Marriner, J.; /Fermilab; Phillips, M.M.; /Carnegie Inst. Observ.; Stritzinger, M.; /Aarhus U. /Stockholm U., OKC /Bohr Inst. /Carnegie Inst. Observ.

2012-06-01T23:59:59.000Z

215

{chi}{sup 2} versus median statistics in supernova type Ia data analysis  

SciTech Connect

In this paper we compare the performances of the {chi}{sup 2} and median likelihood analysis in the determination of cosmological constraints using type Ia supernovae data. We perform a statistical analysis using the 307 supernovae of the Union 2 compilation of the Supernova Cosmology Project and find that the {chi}{sup 2} statistical analysis yields tighter cosmological constraints than the median statistic if only supernovae data is taken into account. We also show that when additional measurements from the cosmic microwave background and baryonic acoustic oscillations are considered, the combined cosmological constraints are not strongly dependent on whether one applies the {chi}{sup 2} statistic or the median statistic to the supernovae data. This indicates that, when complementary information from other cosmological probes is taken into account, the performances of the {chi}{sup 2} and median statistics are very similar, demonstrating the robustness of the statistical analysis.

Barreira, A. [Centro de Fisica do Porto, Rua do Campo Alegre 687, 4169-007 Porto (Portugal); Departamento de Fisica da Faculdade de Ciencias da Universidade do Porto, Rua do Campo Alegre 687, 4169-007 Porto (Portugal); Avelino, P. P. [Departamento de Fisica da Faculdade de Ciencias da Universidade do Porto, Rua do Campo Alegre 687, 4169-007 Porto (Portugal); Centro de Astrofisica da Universidade do Porto, Rua das Estrelas, 4150-762 Porto (Portugal)

2011-10-15T23:59:59.000Z

216

Small-scale Interaction of Turbulence with Thermonuclear Flames in Type Ia Supernovae  

E-Print Network (OSTI)

Microscopic turbulence-flame interactions of thermonuclear fusion flames occuring in Type Ia Supernovae were studied by means of incompressible direct numerical simulations with a highly simplified flame description. The flame is treated as a single diffusive scalar field with a nonlinear source term. It is characterized by its Prandtl number, Pr << 1, and laminar flame speed, S_L. We find that if S_L ~ u', where u' is the rms amplitude of turbulent velocity fluctuations, the local flame propagation speed does not significantly deviate from S_L even in the presence of velocity fluctuations on scales below the laminar flame thickness. This result is interpreted in the context of subgrid-scale modeling of supernova explosions and the mechanism for deflagration-detonation-transitions.

J. C. Niemeyer; W. K. Bushe; G. R. Ruetsch

1999-05-07T23:59:59.000Z

217

Influence de la teneur en lignines des aliments sur la composition des digesta et la production  

E-Print Network (OSTI)

Note Influence de la teneur en lignines des aliments sur la composition des digesta et la essentiellement par leur teneur en lignines Van Soest : 7,4 ; 12,8 et 16 p. 100. Les contenus de l'estomac, de l trois heures, durant 24 heures. L'accroissement de la teneur en lignines des aliments augmente la teneur

Paris-Sud XI, Université de

218

COLORIMTRIE DES LED : INCERTITUDES ET INFLUENCE DU COURANT LECTRIQUE 17 Colorimtrie des LED  

E-Print Network (OSTI)

COLORIM?TRIE DES LED : INCERTITUDES ET INFLUENCE DU COURANT ?LECTRIQUE 17 N. POUSSET Colorimétrie des LED : incertitudes et influence du courant électrique LEDs colorimetry: uncertainties proximale, et indices de rendu des couleurs) de sources d'éclairage à LED, du LNE-INM/Cnam, est décrit. Les

Paris-Sud XI, Université de

219

Initiation of the Detonation in the Gravitationally Confined Detonation Model of Type Ia Supernovae  

Science Journals Connector (OSTI)

We study the initiation of the detonation in the gravitationally confined detonation (GCD) model of Type Ia supernovae (SNe Ia). In this model, ignition occurs at one or several off-center points, resulting in a burning bubble of hot ash that rises rapidly, breaks through the surface of the star, and collides at a point on the stellar surface opposite the breakout, producing a high-velocity inwardly directed flow. Initiation of the detonation occurs spontaneously in a region where the length scale of the temperature gradient extending from the flow (in which carbon burning is already occurring) into unburned fuel is commensurate to the range of critical length scales which have been derived from one-dimensional simulations that resolve the initiation of a detonation. By increasing the maximum resolution in a truncated cone that encompasses this region, beginning somewhat before initiation of the detonation occurs, we successfully simulate in situ the first gradient-initiated detonation in a whole-star simulation. The detonation emerges when a compression wave overruns a pocket of fuel situated in a Kelvin-Helmholtz cusp at the leading edge of the inwardly directed jet of burning carbon. The compression wave preconditions the temperature in the fuel in such a way that the Zel'dovich gradient mechanism can operate and a detonation ensues. We explore the dependence of the length scale of the temperature gradient on spatial resolution and discuss the implications for the robustness of this detonation mechanism. We find that the time and the location at which initiation of the detonation occurs varies with resolution. In particular, initiation of a detonation had not yet occurred in our highest resolution simulation by the time we ended the simulation because of the computational demand it required. However, it may detonate later. We suggest that the turbulent shear layer surrounding the inwardly directed jet provides the most favorable physical conditions, and therefore the most likely location, for initiation of a detonation in the GCD model.

Ivo R. Seitenzahl; Casey A. Meakin; Don Q. Lamb; James W. Truran

2009-01-01T23:59:59.000Z

220

Study of the Detonation Phase in the Gravitationally Confined Detonation Model of Type Ia Supernovae  

E-Print Network (OSTI)

We study the gravitationally confined detonation (GCD) model of Type Ia supernovae through the detonation phase and into homologous expansion. In the GCD model, a detonation is triggered by the surface flow due to single point, off-center flame ignition in carbon-oxygen white dwarfs. The simulations are unique in terms of the degree to which non-idealized physics is used to treat the reactive flow, including weak reaction rates and a time dependent treatment of material in nuclear statistical equilibrium (NSE). Careful attention is paid to accurately calculating the final composition of material which is burned to NSE and frozen out in the rapid expansion following the passage of a detonation wave over the high density core of the white dwarf; and an efficient method for nucleosynthesis post-processing is developed which obviates the need for costly network calculations along tracer particle thermodynamic trajectories. Observational diagnostics are presented for the explosion models, including abundance stratifications and integrated yields. We find that for all of the ignition conditions studied here, a self regulating process comprised of neutronization and stellar expansion results in final \\iso{Ni}{56} masses of $\\sim$1.1\\msun. But, more energetic models result in larger total NSE and stable Fe peak yields. The total yield of intermediate mass elements is $\\sim0.1$\\msun and the explosion energies are all around 1.5$\\times10^{51}$ ergs. The explosion models are briefly compared to the inferred properties of recent Type Ia supernova observations. The potential for surface detonation models to produce lower luminosity (lower \\iso{Ni}{56} mass) supernovae is discussed.

Casey A. Meakin; Ivo Seitenzahl; Dean Townsley; George C. Jordan IV; James Truran; Don Lamb

2008-06-30T23:59:59.000Z

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


221

Initiation of the detonation in the gravitationally confined detonation model of type Ia supernovae.  

SciTech Connect

We study the initiation of the detonation in the gravitationally confined detonation (GCD) model of Type Ia supernovae (SNe Ia). In this model, ignition occurs at one or several off-center points, resulting in a burning bubble of hot ash that rises rapidly, breaks through the surface of the star, and collides at a point on the stellar surface opposite the breakout, producing a high-velocity inwardly directed flow. Initiation of the detonation occurs spontaneously in a region where the length scale of the temperature gradient extending from the flow (in which carbon burning is already occurring) into unburned fuel is commensurate to the range of critical length scales which have been derived from one-dimensional simulations that resolve the initiation of a detonation. By increasing the maximum resolution in a truncated cone that encompasses this region, beginning somewhat before initiation of the detonation occurs, we successfully simulate in situ the first gradient-initiated detonation in a whole-star simulation. The detonation emerges when a compression wave overruns a pocket of fuel situated in a Kelvin-Helmholtz cusp at the leading edge of the inwardly directed jet of burning carbon. The compression wave preconditions the temperature in the fuel in such a way that the Zel'dovich gradient mechanism can operate and a detonation ensues. We explore the dependence of the length scale of the temperature gradient on spatial resolution and discuss the implications for the robustness of this detonation mechanism. We find that the time and the location at which initiation of the detonation occurs varies with resolution. In particular, initiation of a detonation had not yet occurred in our highest resolution simulation by the time we ended the simulation because of the computational demand it required. However, it may detonate later. We suggest that the turbulent shear layer surrounding the inwardly directed jet provides the most favorable physical conditions, and therefore the most likely location, for initiation of a detonation in the GCD model.

Seitenzahl, I. R.; Meakin, C. A.; Lamb, D. Q.; Truran, J. W. (Physics); (Univ. of Chicago); (Max-Planck-Inst. for Astrophysics); (Univ. of Arizona)

2009-07-20T23:59:59.000Z

222

Study of the detonation phase in the gravitationally confined detonation model of type Ia supernovae.  

SciTech Connect

We study the initiation of the detonation in the gravitationally confined detonation (GCD) model of Type Ia supernovae (SNe Ia). In this model, ignition occurs at one or several off-center points, resulting in a burning bubble of hot ash that rises rapidly, breaks through the surface of the star, and collides at a point on the stellar surface opposite the breakout, producing a high-velocity inwardly directed flow. Initiation of the detonation occurs spontaneously in a region where the length scale of the temperature gradient extending from the flow (in which carbon burning is already occurring) into unburned fuel is commensurate to the range of critical length scales which have been derived from one-dimensional simulations that resolve the initiation of a detonation. By increasing the maximum resolution in a truncated cone that encompasses this region, beginning somewhat before initiation of the detonation occurs, we successfully simulate in situ the first gradient-initiated detonation in a whole-star simulation. The detonation emerges when a compression wave overruns a pocket of fuel situated in a Kelvin-Helmholtz cusp at the leading edge of the inwardly directed jet of burning carbon. The compression wave preconditions the temperature in the fuel in such a way that the Zeldovich gradient mechanism can operate and a detonation ensues. We explore the dependence of the length scale of the temperature gradient on spatial resolution and discuss the implications for the robustness of this detonation mechanism. We find that the time and the location at which initiation of the detonation occurs varies with resolution. In particular, initiation of a detonation had not yet occurred in our highest resolution simulation by the time we ended the simulation because of the computational demand it required. However, it may detonate later. We suggest that the turbulent shear layer surrounding the inwardly directed jet provides the most favorable physical conditions, and therefore the most likely location, for initiation of a detonation in the GCD model.

Meakin, C. A.; Seitenzahl, I.; Jordan, G. C.; Truran,, J.; Lamb, D.; Physics; Univ. of Chicago; Univ. of Arizona

2009-07-20T23:59:59.000Z

223

NUCLEOSYNTHESIS IN TWO-DIMENSIONAL DELAYED DETONATION MODELS OF TYPE Ia SUPERNOVA EXPLOSIONS  

SciTech Connect

For the explosion mechanism of Type Ia supernovae (SNe Ia), different scenarios have been suggested. In these, the propagation of the burning front through the exploding white dwarf (WD) star proceeds in different modes, and consequently imprints of the explosion model on the nucleosynthetic yields can be expected. The nucleosynthetic characteristics of various explosion mechanisms are explored based on three two-dimensional explosion simulations representing extreme cases: a pure turbulent deflagration, a delayed detonation following an approximately spherical ignition of the initial deflagration, and a delayed detonation arising from a highly asymmetric deflagration ignition. Apart from this initial condition, the deflagration stage is treated in a parameter-free approach. The detonation is initiated when the turbulent burning enters the distributed burning regime. This occurs at densities around 10{sup 7} g cm{sup -3}-relatively low as compared to existing nucleosynthesis studies for one-dimensional spherically symmetric models. The burning in these multidimensional models is different from that in one-dimensional simulations as the detonation wave propagates both into unburned material in the high-density region near the center of a WD and into the low-density region near the surface. Thus, the resulting yield is a mixture of different explosive burning products, from carbon-burning products at low densities to complete silicon-burning products at the highest densities, as well as electron-capture products synthesized at the deflagration stage. Detailed calculations of the nucleosynthesis in all three models are presented. In contrast to the deflagration model, the delayed detonations produce a characteristic layered structure and the yields largely satisfy constraints from Galactic chemical evolution. In the asymmetric delayed detonation model, the region filled with electron capture species (e.g., {sup 58}Ni, {sup 54}Fe) is within a shell, showing a large off-set, above the bulk of {sup 56}Ni distribution, while species produced by the detonation are distributed more spherically.

Maeda, K. [Institute for the Physics and Mathematics of the Universe (IPMU), University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8583 (Japan); Roepke, F.K.; Fink, M.; Hillebrandt, W.; Travaglio, C. [Max-Planck-Institut fuer Astrophysik, Karl-Schwarzschild-Strasse 1, 85741 Garching (Germany); Thielemann, F.-K., E-mail: keiichi.maeda@ipmu.j [Department Physik, Universitaet Basel, CH-4056 Basel (Switzerland)

2010-03-20T23:59:59.000Z

224

INITIATION OF THE DETONATION IN THE GRAVITATIONALLY CONFINED DETONATION MODEL OF TYPE Ia SUPERNOVAE  

SciTech Connect

We study the initiation of the detonation in the gravitationally confined detonation (GCD) model of Type Ia supernovae (SNe Ia). In this model, ignition occurs at one or several off-center points, resulting in a burning bubble of hot ash that rises rapidly, breaks through the surface of the star, and collides at a point on the stellar surface opposite the breakout, producing a high-velocity inwardly directed flow. Initiation of the detonation occurs spontaneously in a region where the length scale of the temperature gradient extending from the flow (in which carbon burning is already occurring) into unburned fuel is commensurate to the range of critical length scales which have been derived from one-dimensional simulations that resolve the initiation of a detonation. By increasing the maximum resolution in a truncated cone that encompasses this region, beginning somewhat before initiation of the detonation occurs, we successfully simulate in situ the first gradient-initiated detonation in a whole-star simulation. The detonation emerges when a compression wave overruns a pocket of fuel situated in a Kelvin-Helmholtz cusp at the leading edge of the inwardly directed jet of burning carbon. The compression wave preconditions the temperature in the fuel in such a way that the Zel'dovich gradient mechanism can operate and a detonation ensues. We explore the dependence of the length scale of the temperature gradient on spatial resolution and discuss the implications for the robustness of this detonation mechanism. We find that the time and the location at which initiation of the detonation occurs varies with resolution. In particular, initiation of a detonation had not yet occurred in our highest resolution simulation by the time we ended the simulation because of the computational demand it required. However, it may detonate later. We suggest that the turbulent shear layer surrounding the inwardly directed jet provides the most favorable physical conditions, and therefore the most likely location, for initiation of a detonation in the GCD model.

Seitenzahl, Ivo R. [Department of Physics, University of Chicago, Chicago, IL 60637 (United States); Meakin, Casey A.; Truran, James W. [Joint Institute for Nuclear Astrophysics, University of Chicago, Chicago, IL 60637 (United States); Lamb, Don Q. [Center for Astrophysical Thermonuclear Flashes, University of Chicago, Chicago, IL 60637 (United States)

2009-07-20T23:59:59.000Z

225

SN 2003du: Signatures of the Circumstellar Environment in a Normal Type Ia Supernova?  

E-Print Network (OSTI)

We present observations of the Type Ia supernova 2003du and report the detectionof an unusual, high-velocity component in the Ca II infrared triplet, similar tofeatures previously observed in SN 2000cx and SN 2001el. This feature exhibits a large expansion velocity (~18,000 km/s) which is nearly constant between -7 and +2 days relative to maximum light, and disappears shortly thereafter. Otherthan this feature, the spectral evolution and light curve resemble those of a normal SN Ia. We find that the Ca II feature can plausibly be caused by a dense shell formed when circumstellar material of solar abundance is overrun by the rapidly expanding outermost layers of the SN ejecta. Model calculations show that the optical and infrared spectra are remarkably unaffected by the circumstellar interaction. In particular, no hydrogen lines are detectable in either absorption or emission. The only qualitatively different features are the strong, high-velocity feature in the Ca II IR-triplet, and a somewhat weaker O I feature near 7,300 AA. The morphology and time evolution of these features provide an estimate for the amount of accumulated matter and an indication of the mixing in the dense shell. We apply these diagnostic tools to SN 2003du and infer that about 2 x 10^{-2} M_sun of solar abundance material may have accumulated in a circumstellar shell prior to the observations. Furthermore, the early light curve data imply that the circumstellar material was originally very close to the progenitor system, perhaps from an accretion disk, Roche lobe or common envelope.

C. L. Gerardy; P. Hoeflich; R. A. Fesen; G. H. Marion; K. Nomoto; R. Quimby; B. E. Schaefer; L. Wang; J. C. Wheeler

2003-09-23T23:59:59.000Z

226

Sensitivity study of explosive nucleosynthesis in Type Ia supernovae: I. Modification of individual thermonuclear reaction rates  

E-Print Network (OSTI)

We explore the sensitivity of the nucleosynthesis due to type Ia supernovae with respect to uncertainties in nuclear reaction rates. We have adopted a standard one-dimensional delayed detonation model of the explosion of a Chandrasekhar-mass white dwarf, and have post-processed the thermodynamic trajectories of every mass-shell with a nucleosynthetic code, with increases (decreases) by a factor of ten on the rates of 1196 nuclear reactions. We have computed as well hydrodynamic models for different rates of the fusion reactions of 12C and of 16O. For selected reactions, we have recomputed the nucleosynthesis with alternative prescriptions for their rates taken from the JINA REACLIB database, and have analyzed the temperature ranges where modifications of their rates have the strongest effect on nucleosynthesis. The nucleosynthesis resulting from the Type Ia supernova models is quite robust with respect to variations of nuclear reaction rates, with the exception of the reaction of fusion of 12C nuclei. The energy of the explosion changes by less than \\sim4%. The changes in the nucleosynthesis due to the modification of the rates of fusion reactions are as well quite modest, for instance no species with a mass fraction larger than 0.02 experiences a variation of its yield larger than a factor of two. We provide the sensitivity of the yields of the most abundant species with respect to the rates of the most intense reactions with protons, neutrons, and alphas. In general, the yields of Fe-group nuclei are more robust than the yields of intermediate-mass elements. Among the charged particle reactions, the most influential on supernova nucleosynthesis are 30Si + p \\rightleftarrows 31P + {\\gamma}, 20Ne + {\\alpha} \\rightleftarrows 24Mg + {\\gamma}, and 24Mg + {\\alpha} \\rightleftarrows 27Al + p. The temperatures at which a modification of their rate has a larger impact are in the range 2 < T < 4 GK. (abridged)

Eduardo Bravo; Gabriel Martnez-Pinedo

2012-04-09T23:59:59.000Z

227

Incompatibility of a comoving Ly-alpha forest with supernova-Ia luminosity distances  

E-Print Network (OSTI)

Recently Perlmutter et al. suggested a positive value of Einstein's cosmological constant Lambda on the basis of luminosity distances from type-Ia supernovae. However, Lambda world models had earlier been proposed by Hoell & Priester and Liebscher et al. on the basis of quasar absorption-line data. Employing more general repulsive fluids ("dark energy") encompassing the Lambda component we quantitatively compare both approaches with each other. Fitting the SN-data by a minimum-component model consisting of dark energy + dust yields a closed universe with a large amount of dust exceeding the baryonic content constrained by big-bang nucleosynthesis. The nature of the dark energy is hardly constrained. Only when enforcing a flat universe there is a clear tendency to a dark-energy Lambda fluid and the `canonical' value Omega_M = 0.3 for dust. Conversely, fitting the quasar-data by a minimum-component model yields a sharply defined, slightly closed model with a low dust density ruling out significant pressureless dark matter. The dark-energy component obtains an equation-of-state P = -0.96 epsilon close to that of a Lambda-fluid. Omega_M = 0.3 or a precisely flat spatial geometry are inconsistent with minimum-component models. It is found that quasar and supernova data sets cannot be reconciled with each other via (repulsive ideal fluid+dust+radiation)-world models. Compatibility could be reached by drastic expansion of the parameter space with at least two exotic fluids added to dust and radiation as world constituents. If considering such solutions as far-fetched one has to conclude that the quasar absorption line and the SN-Ia constraints are incompatible.

Jens Thomas; Hartmut Schulz

2001-03-18T23:59:59.000Z

228

Category:Utility Rate Impacts on PV Economics By Location | Open Energy  

Open Energy Info (EERE)

Utility Rate Impacts on PV Economics By Location Utility Rate Impacts on PV Economics By Location Jump to: navigation, search Impact of Utility Rates on PV Economics Montgomery, AL Little Rock, AR Flagstaff, AZ Phoenix, AZ Tucson, AZ Arcata, CA LA, CA San Francisco, CA Boulder, CO Eagle County, CO Pueblo, CO Bridgeport, CT Wilmington, DE Miami, FL Tampa, FL Atlanta, GA Savannah, GA Des Moines, IA Mason, IA Boise, ID Chicago, IL Springfield, IL Indianapolis, IN Goodland, KS Wichita, KS Lexington, KY New Orleans, LA Shreveport, LA Boston, MA Baltimore, MD Caribou, ME Portland, ME Detroit, MI Houghton-Lake, MI Traverse City, MI International Falls, MN Minneapolis, MN Kansas City, MO Jackson, MS Billings, MT Greensboro, NC Wilmington, NC Bismarck, ND Minot, ND Omaha, NE Concord, NH Atlantic City, NJ Albuquerque, NM Las Vegas, NV Reno, NV New York, NY

229

Die Diffusion des Wasserstoffs im Palladium  

Science Journals Connector (OSTI)

Durch Diffusionsmessungen von Wasserstoff im Palladium wird festgestellt, da bei Wasserstoffkonzentrationen zwischen 0 und 30 und zwischen 800 und 1000 Metallvolumina Lsungsphasen des Wasserstoffs bestehen, ...

B. Duhm

1935-01-01T23:59:59.000Z

230

Aspekte des Betrieblich-Technischen Umweltschutzes  

Science Journals Connector (OSTI)

Im Interesse einer mittel- bis langfristigen Absicherung des Unternehmensbestandes sind Unternehmen gezwungen, umweltorientierte Strategien zu entwickeln. Die Anpassungsfhigkeit an die sich ndernden Rahmenbe...

Stefan Vorbach; Wilhelm Riesner; Siegfried Korhammer

2003-01-01T23:59:59.000Z

231

Objektorientierte Modellbildung des fahrdynamischen Verhaltens mit MODELICA  

Science Journals Connector (OSTI)

Der Entwurf mechatronischer Produkte verlangt die Bercksichtigung des Gesamtsystems, um Iterationen zu reduzieren und Produkteigenschaften nicht nur zu verbessern, sondern auch zu optimieren, [11]. Deswegen soll...

Dr.-Ing. Stefan Drogies

2006-01-01T23:59:59.000Z

232

Verhalten des Gueisens bei hohen und tiefen Temperaturen  

Science Journals Connector (OSTI)

Fr die Standfestigkeit (Wrmebstndigkeit) des Gueisens bei erhhten Temperaturen (unterhalb A c l) wird die Bestndigkeit des Eisenkarbids von aus-schlaggebender Bedeutung sein, und all...

Dr.-Ing. Eugen Piwowarsky

1929-01-01T23:59:59.000Z

233

Analyse der bergangsresonanz des auf Federisolierung gesttzten Sgegatterfundaments  

Science Journals Connector (OSTI)

Die Arbeit zeigt die Ergebnisse einer theoretischen Verhaltens-analyse des Gatterfundaments whrend der Inbetriebnahme. Es wurde die Abhngigkeit der maximalen Resonanzamplituden von der Anlaufzeit des Motors und...

M. Dembinski

1993-01-01T23:59:59.000Z

234

Klassisches Verfahren zur Ermittlung des Regelvorganges mit Hilfe der Differentialgleichung  

Science Journals Connector (OSTI)

Das sogenannte klassische Verfahren zur Ermittlung des Regelvorganges geht aus von den Differentialgleichungen des Systems. Aus den verschiedenen, gleichzeitig gltigen simultanen Differentialgleichungen im ...

Professor Dr.-Ing. A. Leonhard

1949-01-01T23:59:59.000Z

235

Klassisches Verfahren zur Ermittlung des Regelvorganges mit Hilfe der Differentialgleichung  

Science Journals Connector (OSTI)

Das sogenannte klassische Verfahren zur Ermittlung des Regelvorganges geht aus von den Differentialgleichungen des Systems. Aus den verschiedenen, gleichzeitig gltigen simultanen Differentialgleichungen im ...

Professor Dr.-Ing. A. Leonhard

1957-01-01T23:59:59.000Z

236

Klassisches Verfahren zur Ermittlung des Regelvorganges mit Hilfe der Differentialgleichung  

Science Journals Connector (OSTI)

Das sogenannte klassische Verfahren zur Ermittlung des Regelvorganges arbeitet nur mit den Differentialgleichungen des Systems. Aus den verschiedenen, gleichzeitig gltigen simultanen Differentialgleichungen ...

A. Leonhard

1962-01-01T23:59:59.000Z

237

HELIUM-IGNITED VIOLENT MERGERS AS A UNIFIED MODEL FOR NORMAL AND RAPIDLY DECLINING TYPE Ia SUPERNOVAE  

SciTech Connect

The progenitors of Type Ia supernovae (SNe Ia) are still unknown, despite significant progress during the past several years in theory and observations. Violent mergers of two carbon-oxygen (CO) white dwarfs (WDs) are a candidate scenario suggested to be responsible for at least a significant fraction of normal SNe Ia. Here, we simulate the merger of two CO WDs using a moving-mesh code that allows for the inclusion of thin helium (He) shells (0.01 M{sub Sun }) on top of the WDs at an unprecedented numerical resolution. The accretion of He onto the primary WD leads to the formation of a detonation in its He shell. This detonation propagates around the CO WD and sends a converging shock wave into its core, known to robustly trigger a second detonation, as in the well-known double-detonation scenario for He-accreting CO WDs. However, in contrast to that scenario where a massive He shell is required to form a detonation through thermal instability, here the He detonation is ignited dynamically. Accordingly the required He-shell mass is significantly smaller, and hence its burning products are unlikely to affect the optical display of the explosion. We show that this scenario, which works for CO primary WDs with CO- as well as He-WD companions, has the potential to explain the different brightness distributions, delay times, and relative rates of normal and fast declining SNe Ia. Finally, we discuss extensions to our unified merger model needed to obtain a comprehensive picture of the full observed diversity of SNe Ia.

Pakmor, R.; Springel, V. [Heidelberger Institut fuer Theoretische Studien, Schloss-Wolfsbrunnenweg 35, D-69118 Heidelberg (Germany); Kromer, M. [Kavli Institute for the Physics and Mathematics of the Universe, University of Tokyo, Kashiwa, Chiba 277-8583 (Japan); Taubenberger, S. [Max-Planck-Institut fuer Astrophysik, Karl-Schwarzschild-Str. 1, D-85748 Garching (Germany)

2013-06-10T23:59:59.000Z

238

New Hubble Space Telescope Discoveries of Type Ia Supernovae at z > 1: Narrowing Constraints on the Early Behavior of Dark Energy  

E-Print Network (OSTI)

We have discovered 21 new Type Ia supernovae (SNe Ia) with the Hubble Space Telescope (HST) and have used them to trace the history of cosmic expansion over the last 10 billion years. These objects, which include 13 spectroscopically confirmed SNe Ia at z > 1, were discovered during 14 epochs of reimaging of the GOODS fields North and South over two years with the Advanced Camera for Surveys on HST. Together with a recalibration of our previous HST-discovered SNe Ia, the full sample of 23 SNe Ia at z > 1 provides the highest-redshift sample known. Combined with previous SN Ia datasets, we measured H(z) at discrete, uncorrelated epochs, reducing the uncertainty of H(z>1) from 50% to under 20%, strengthening the evidence for a cosmic jerk--the transition from deceleration in the past to acceleration in the present. The unique leverage of the HST high-redshift SNe Ia provides the first meaningful constraint on the dark energy equation-of-state parameter at z >1. The result remains consistent with a cosmological constant (w(z)=-1), and rules out rapidly evolving dark energy (dw/dz >>1). The defining property of dark energy, its negative pressure, appears to be present at z>1, in the epoch preceding acceleration, with ~98% confidence in our primary fit. Moreover, the z>1 sample-averaged spectral energy distribution is consistent with that of the typical SN Ia over the last 10 Gyr, indicating that any spectral evolution of the properties of SNe Ia with redshift is still below our detection threshold.

Adam G. Riess; Louis-Gregory Strolger; Stefano Casertano; Henry C. Ferguson; Bahram Mobasher; Ben Gold; Peter J. Challis; Alexei V. Filippenko; Saurabh Jha; Weidong Li; John Tonry; Ryan Foley; Robert P. Kirshner; Mark Dickinson; Emily MacDonald; Daniel Eisenstein; Mario Livio; Josh Younger; Chun Xu; Tomas Dahlen; Daniel Stern

2006-11-17T23:59:59.000Z

239

Anne Bamberg* Former des prtres Sourds  

E-Print Network (OSTI)

, Understanding Deaf Culture. In Search of Deafhood, Clevedon, Buffalo, Toronto, Sydney, Multilingual Matters Philippe Furtado, Le Père Agustin Yanes Valer prêtre sourd en Espagne, in Le lien des sourds catholiques et dans le monde et le Témoignage d'un prêtre sourd, in Le lien des sourds catholiques et de leurs amis, 9

Boyer, Edmond

240

Institut National des Tlcommunications Advanced Telecommunications Research Institute  

E-Print Network (OSTI)

Institut National des Télécommunications Advanced Telecommunications Research Institute Rapport de

Ray, Thomas S.

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


241

Science du sol Le phosphore assimilable des sols : sa reprsentation  

E-Print Network (OSTI)

Science du sol Le phosphore assimilable des sols : sa représentation par un modèle fonctionnel à'échange isotopique des ions phosphate permet de démon- trer que le phosphore (P) biodisponible des sols est un des fertilisations excédentaires de phosphore modifient tous les compartiments. Cette représentation

Boyer, Edmond

242

CP Tech Center I Iowa State University I 2711 S. Loop Dr. Suite 4700,Ames, IA 50010-8664 I 515-294-5798 FOR MORE INFORMATION  

E-Print Network (OSTI)

CP Tech Center I Iowa State University I 2711 S. Loop Dr. Suite 4700,Ames, IA 50010-8664 I 515 calcium sulfate in the form of hemihydrate (plaster) in the cement (false set) or the uncontrolled early

243

??eia e e et ??? oa0 to 3i5ontinBoB5 PieeFi5e Hinea tiTiUation ...  

E-Print Network (OSTI)

PieeFi5e Hinea tiTiUation. I.R. de Farias JR., M. ?hao, and H. ?hao. State University of New York at jumalo. {defariasy m|haoy |hon??ia}@??ffalo.ed?.

244

Etude d'une mthode d'amortissement des disruptions d'un plasma de tokamak.  

E-Print Network (OSTI)

??Les disruptions sont des pertes violentes et trs rapides (environ 20 ms) du confinement des plasmas de tokamak qui peuvent conduire des endommagements de (more)

Reux, Cdric

2010-01-01T23:59:59.000Z

245

E-Print Network 3.0 - application des chargeurs Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

des... 'expression transports intelligents dsigne ces applications des TIC au domaine des transports. Ces technologies ont un... chargeurs. 12;NETCOM, vol 22,...

246

E-Print Network 3.0 - analyse des entscheidungsfeldes Sample...  

NLE Websites -- All DOE Office Websites (Extended Search)

: Analyse des besoins, recherche des logiciels existants adapts aux besoins... intranet, scurit des sites web COMPETENCES SOUHAITEES : Connaissance d'une...

247

E-Print Network 3.0 - analyse des kauens Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

: Analyse des besoins, recherche des logiciels existants adapts aux besoins... intranet, scurit des sites web COMPETENCES SOUHAITEES : Connaissance d'une...

248

E-Print Network 3.0 - analyse des konjugativen Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

: Analyse des besoins, recherche des logiciels existants adapts aux besoins... intranet, scurit des sites web COMPETENCES SOUHAITEES : Connaissance d'une...

249

LAX XXlCfl jX?iK, Idd+?KYLViG?IA  

Office of Legacy Management (LM)

f f , : I~&l, samtier cipwati8Aa CffUm - . Jiux.lCJ d,# 1754 - - _- - .- t :; . Jesse e. ahizmn*~*ter -2.' -------- - _ &tV' hi@A l f izau Bkteriala ;' . . 1 -7 I _' i' . Fpr&G& r&Q Q,&& fu &fI& L;&& -l&d 2;,i' iI,;/Qi' rIGN CQ&GgJy p;E& p;~p>gyf LAX XXlCfl jX?iK, Idd+?KYLViG?IA i-icfer~~o is &o ta yaw rwarandu3;: l P iimwmbec L?, 1953, reque&in~ a d&q.&ti of khority tA A&sister prog= for th+zz developmrrrl, Ii-&k& & acyui8itti ef c;uYletit*type and reswitlitc-type urtim bi:aPing eres and far t3-u jx*uctim and acquisitian 6f W ;aniU CCm- csa:ratc~ fhzi awes wit2n Lhe Six&e of Pemlsyzvania. 1 da not b&i- the projscrt fmr the pkcch2670 +S eroa from i&d.&

250

Direct numerical simulations of type Ia supernovae flames I: The landau-darrieus instability  

SciTech Connect

Planar flames are intrinsically unstable in open domains due to the thermal expansion across the burning front--the Landau-Darrieus instability. This instability leads to wrinkling and growth of the flame surface, and corresponding acceleration of the flame, until it is stabilized by cusp formation. We look at the Landau-Darrieus in stability for C/O thermonuclear flames at conditions relevant to the late stages of a Type Ia supernova explosion. Two-dimensional direct numerical simulations of both single-mode and multi-mode perturbations using a low Mach number hydrodynamics code are presented. We show the effect of the instability on the flame speed as a function of both the density and domain size, demonstrate the existence of the small scale cutoff to the growth of the instability, and look for the proposed breakdown of the non-linear stabilization at low densities. The effects of curvature on the flame as quantified through measurements of the growth rate and computation of the corresponding Markstein number. While accelerations of a few percent are observed, they are too small to have any direct outcome on the supernova explosion.

Bell, J.B.; Day, M.S.; Rendleman, C.A.; Woosley, S.E.; Zingale, M.

2003-11-24T23:59:59.000Z

251

Thermonuclear .Ia Supernovae from Helium Shell Detonations: Explosion Models and Observables  

Science Journals Connector (OSTI)

During the early evolution of an AM Canum Venaticorum system, helium is accreted onto the surface of a white dwarf under conditions suitable for unstable thermonuclear ignition. The turbulent motions induced by the convective burning phase in the He envelope become strong enough to influence the propagation of burning fronts and may result in the onset of a detonation. Such an outcome would yield radioactive isotopes and a faint rapidly rising thermonuclear ".Ia" supernova. In this paper, we present hydrodynamic explosion models and observable outcomes of these He shell detonations for a range of initial core and envelope masses. The peak UVOIR bolometric luminosities range by a factor of 10 (from 5 ? 1041 to 5 ? 1042 erg s1), and the R-band peak varies from M R,peak = 15 to 18. The rise times in all bands are very rapid (40Ca through 56Ni) and unburnt He. Thus, the spectra around peak light lack signs of intermediate-mass elements and are dominated by CaII and TiII features, with the caveat that our radiative transfer code does not include the nonthermal effects necessary to produce He features.

Ken J. Shen; Dan Kasen; Nevin N. Weinberg; Lars Bildsten; Evan Scannapieco

2010-01-01T23:59:59.000Z

252

Comparison of the Legacy and Gold SnIa Dataset Constraints on Dark Energy Models  

E-Print Network (OSTI)

We have performed a comparative analysis of three recent and reliable SnIa datasets available in the literature: the Full Gold (FG) dataset (157 data points $0dataset (140 data points $0dataset (115 data points $0datasets are consistent with each other at the 95% confidence level, the latest (SNLS) dataset shows distinct trends which are not shared by the Gold datasets. We find that the best fit dynamical $w(z)$ obtained from the SNLS dataset does not cross the PDL $w=-1$ and remains above and close to the $w=-1$ line for the whole redshift range $0datasets (FG and TG) clearly crosses the PDL and departs significantly from the PDL $w=-1$ line while the LCDM parameter values are about $2\\sigma$ away from the best fit $w(z)$. In addition, the $(\\Omega_{0m},\\Omega_\\Lambda)$ parameters in a LCDM parametrization without a flat prior, fit by the SNLS dataset, favor the minimal flat LCDM concordance model. The corresponding fit with the Gold datasets mildly favors a closed universe and the flat LCDM parameter values are $1\\sigma - 2\\sigma$ away from the best fit $(\\Omega_{0m},\\Omega_\\Lambda)$.

S. Nesseris; L. Perivolaropoulos

2005-12-02T23:59:59.000Z

253

Phenomenology for Supernova Ia Data Based on a New Cosmic Time  

E-Print Network (OSTI)

A new phenomenological theory for the expansion of our universe is presented. Because fundamental supporting theory is still in development, its discussion is not presented in this paper. The theory is based on a new algebraic expression for cosmic time G Rho t^2=3/32Pi, which correctly predicts the WMAP measured cosmological constants and the fundamental Hubble parameter H(t) for the expansion of the universe. A replacement for dark matter, called here "dark mass", is proposed which scales as with the expansion and incorporated. It does not react with ordinary matter, except gravitationally, and produces flat rotational curves for spiral galaxies. Also a new expression for the approaching velocity of radiation in a closed 3-sphere expanding universe is given that accounts for the early degrading negative approach of radiation for z > 1.7. The expression is v = Hr-c. Combining these three elements produces a luminosity distance dL that successfully predicts the apparent magnitude of exploding supernova Ia stars and even the new gamma ray bursts with no need for dark energy or acceleration of the expansion of the universe.

Charles B. Leffert

2007-07-26T23:59:59.000Z

254

Evaluating Systematic Dependencies of Type Ia Supernovae: The Influence of Deflagration to Detonation Density  

E-Print Network (OSTI)

We explore the effects of the deflagration to detonation transition (DDT) density on the production of Ni-56 in thermonuclear supernova explosions (type Ia supernovae). Within the DDT paradigm, the transition density sets the amount of expansion during the deflagration phase of the explosion and therefore the amount of nuclear statistical equilibrium (NSE) material produced. We employ a theoretical framework for a well-controlled statistical study of two-dimensional simulations of thermonuclear supernovae with randomized initial conditions that can, with a particular choice of transition density, produce a similar average and range of Ni-56 masses to those inferred from observations. Within this framework, we utilize a more realistic "simmered" white dwarf progenitor model with a flame model and energetics scheme to calculate the amount of Ni-56 and NSE material synthesized for a suite of simulated explosions in which the transition density is varied in the range 1-3x10^7 g/cc. We find a quadratic dependence ...

Jackson, Aaron P; Townsley, Dean M; Chamulak, David A; Brown, Edward F; Timmes, F X

2010-01-01T23:59:59.000Z

255

A Test of Tully-Fisher Distance Estimates Using Cepheids and Type Ia Supernovae  

E-Print Network (OSTI)

We update and extend the results of Shanks (1997, MNRAS, 290, L77) by making a direct test of Tully-Fisher distance estimates to thirteen spiral galaxies with HST Cepheid distances and to ten spiral galaxies with Type Ia supernova (SNIa) distances. The results show that the Tully-Fisher distance moduli are too short with respect to the Cepheid distances by 0.46+-0.11mag and too short with respect to the SNIa distances by 0.49+-0.18mag. Combining the HST Cepheid and the best SNIa data suggests that, overall, previous Tully-Fisher distances at v~1000 kms-1 were too short by 0.43+-0.09mag, a result which is significant at the 4.6 sigma level. These data therefore indicate that previous Tully-Fisher distances should be revised upwards by 22+-5% implying, for example, a Virgo distance of 19.0+-1.8Mpc. The value of Ho from Tully-Fisher estimates is correspondingly revised downwards from Ho=84+-10kms-1Mpc-1 to Ho=69+-8kms-1Mpc-1. There is evidence that the Tully-Fisher relation at large distances is affected by Malmquist bias. In this case, we argue that Ho<50kms-1Mpc-1 cannot be ruled out by Tully-Fisher considerations.

T. Shanks

1999-01-24T23:59:59.000Z

256

Parametrizing the transition to the phantom epoch with Supernovae Ia and Standard Rulers  

E-Print Network (OSTI)

The reconstruction of a (non)canonical scalar field Lagrangian from the dark energy Equation of State (EoS) parameter is studied, where it is shown that any EoS parametrization can be well reconstructed in terms of scalar fields. Several examples of EoS parameters are studied and the particular scalar field Lagrangian is reconstructed. Then, we propose some new parametrizations that may present a (fast) transition to a phantom dark energy EoS (where $w_{DE}dark energy EoS are studied by using supernovae Ia data (HST Cluster Supernova Survey) combined with Standard Ruler datasets [Cosmic Microwave Background (CMB) and Baryon Acoustic Oscillations (BAO)] and its comparison with the $\\Lambda$CDM model is analyzed. Then, the best fit of the models is obtained, which provides some information about whether a phantom transition may be supported by the observations. In this regard, the crossing of the phantom barrier is allowed statistically but the occurrence of a future singularity seems unlikely.

Iker Leanizbarrutia; Diego Sez-Gmez

2014-04-14T23:59:59.000Z

257

A POSSIBLE EVOLUTIONARY SCENARIO OF HIGHLY MAGNETIZED SUPER-CHANDRASEKHAR WHITE DWARFS: PROGENITORS OF PECULIAR TYPE Ia SUPERNOVAE  

SciTech Connect

Several recently discovered peculiar Type Ia supernovae seem to demand an altogether new formation theory that might help explain the puzzling dissimilarities between them and the standard Type Ia supernovae. The most striking aspect of the observational analysis is the necessity of invoking super-Chandrasekhar white dwarfs having masses {approx}2.1-2.8 M{sub Sun }, M{sub Sun} being the mass of Sun, as their most probable progenitors. Strongly magnetized white dwarfs having super-Chandrasekhar masses have already been established as potential candidates for the progenitors of peculiar Type Ia supernovae. Owing to the Landau quantization of the underlying electron degenerate gas, theoretical results yielded the observationally inferred mass range. Here, we sketch a possible evolutionary scenario by which super-Chandrasekhar white dwarfs could be formed by accretion on to a commonly observed magnetized white dwarf, invoking the phenomenon of flux freezing. This opens multiple possible evolution scenarios ending in supernova explosions of super-Chandrasekhar white dwarfs having masses within the range stated above. We point out that our proposal has observational support, such as the recent discovery of a large number of magnetized white dwarfs by the Sloan Digital Sky Survey.

Das, Upasana; Mukhopadhyay, Banibrata [Department of Physics, Indian Institute of Science, Bangalore 560012 (India); Rao, A. R., E-mail: upasana@physics.iisc.ernet.in, E-mail: bm@physics.iisc.ernet.in, E-mail: arrao@tifr.res.in [Department of Astronomy and Astrophysics, Tata Institute of Fundamental Research, Mumbai 400005 (India)

2013-04-10T23:59:59.000Z

258

Type Ia Supernovae with Bi-Modal Explosions Are Common -- Possible Smoking Gun for Direct Collisions of White-Dwarfs  

E-Print Network (OSTI)

We discover clear doubly-peaked line profiles in 3 out of ~20 type Ia supernovae (SNe Ia) with high-quality nebular-phase spectra. The profiles are consistently present in three well-separated Co/Fe emission features. The two peaks are respectively blue-shifted and red-shifted relative to the host galaxies and are separated by ~5000 km/s. The doubly-peaked profiles directly reflect a bi-modal velocity distribution of the radioactive Ni56 in the ejecta that powers the emission of these SNe. Due to their random orientations, only a fraction of SNe with intrinsically bi-modal velocity distributions will appear as doubly-peaked spectra. Therefore SNe with intrinsic bi-modality are likely common, especially among the SNe in the low-luminosity (~40% of all SNe Ia) part on the Philips relation \\Delta m15(B) >~ 1.3. Bi-modality is naturally expected from direct collisions of white dwarfs (WDs) due to the detonation of both WDs and is demonstrated in a 3D 0.64 M_Sun-0.64 M_Sun WD collision simulation.

Dong, Subo; Kushnir, Doron; Prieto, Jose L

2014-01-01T23:59:59.000Z

259

Three-Dimensional Simulations of the Deflagration Phase of the Gravitationally Confined Detonation Model of Type Ia Supernovae  

E-Print Network (OSTI)

We report the results of a series of three-dimensional (3-D) simulations of the deflagration phase of the gravitationally confined detonation mechanism for Type Ia supernovae. In this mechanism, ignition occurs at one or several off-center points, resulting in a burning bubble of hot ash that rises rapidly, breaks through the surface of the star, and collides at a point opposite breakout on the stellar surface. We find that detonation conditions are robustly reached in our 3-D simulations for a range of initial conditions and resolutions. Detonation conditions are achieved as the result of an inwardly-directed jet that is produced by the compression of unburnt surface material when the surface flow collides with itself. A high-velocity outwardly-directed jet is also produced. The initial conditions explored in this paper lead to conditions at detonation that can be expected to produce large amounts of $^{56}$Ni and small amounts of intermediate mass elements. These particular simulations are therefore relevant only to high luminosity Type Ia supernovae. Recent observations of Type Ia supernovae imply a compositional structure that is qualitatively consistent with that expected from these simulations.

G C Jordan IV; R T Fisher; D M Townsley; A C Calder; C Graziani; S Asida; D Q Lamb; J W Truran

2007-03-21T23:59:59.000Z

260

The Joint Efficient Dark-energy Investigation (JEDI): Measuring the cosmic expansion history from type Ia supernovae  

E-Print Network (OSTI)

JEDI (Joint Efficient Dark-energy Investigation) is a candidate implementation of the NASA-DOE Joint Dark Energy Mission (JDEM). JEDI will probe dark energy in three independent methods: (1) type Ia supernovae, (2) baryon acoustic oscillations, and (3) weak gravitational lensing. In an accompanying paper, an overall summary of the JEDI mission is given. In this paper, we present further details of the supernova component of JEDI. To derive model-independent constraints on dark energy, it is important to precisely measure the cosmic expansion history, H(z), in continuous redshift bins from z \\~ 0-2 (the redshift range in which dark energy is important). SNe Ia at z > 1 are not readily accessible from the ground because the bulk of their light has shifted into the near-infrared where the sky background is overwhelming; hence a space mission is required to probe dark energy using SNe. Because of its unique near-infrared wavelength coverage (0.8-4.2 microns), JEDI has the advantage of observing SNe Ia in the rest frame J band for the entire redshift range of 0 energy are discussed, with special emphasis on the improved precision afforded by the rest frame near-infrared data.

M. M. Phillips; Peter Garnavich; Yun Wang; David Branch; Edward Baron; Arlin Crotts; J. Craig Wheeler; Edward Cheng; Mario Hamuy; for the JEDI Team

2006-06-28T23:59:59.000Z

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261

Constraining the dark energy and smoothness parameter with typeIa supernovae and gamma-ray bursts  

Science Journals Connector (OSTI)

The existence of inhomogeneities in the observed Universe modifies the distance-redshift relations thereby affecting the results of cosmological tests in comparison to the ones derived assuming spatially uniform models. By modeling the inhomogeneities through a Zeldovich-Kantowski-Dyer-Roeder approach which is phenomenologically characterized by a smoothness parameter ?, we rediscuss the constraints on the cosmic parameters based on typeIa supernovae (SNeIa) and gamma-ray bursts (GRBs) data. The present analysis is restricted to a flat ?CDM model with the reasonable assumption that ? does not clump. A ?2 analysis using 557 SNeIa data from the Union2 compilation data (R. Amanullah et al., Astrophys. J. 716, 712 (2010).) constrains the pair of parameters (?m, ?) to ?m=0.27-0.03+0.08 (2?) and ??0.25. A similar analysis based only on 59 Hymnium GRBs (H. Wei, J. Cosmol. Astropart. Phys. 08 (2010) 020.) constrains the matter density parameter to be ?m=0.35-0.24+0.62 (2?) while all values for the smoothness parameter are allowed. By performing a joint analysis, it is found that ?m=0.27-0.03+0.06 and ??0.52. As a general result, although considering that current GRB data alone cannot constrain the smoothness ? parameter, our analysis provides an interesting cosmological probe for dark energy even in the presence of inhomogeneities.

V. C. Busti; R. C. Santos; J. A. S. Lima

2012-05-07T23:59:59.000Z

262

Matrise et usage des TIC : la situation des enseignants en Belgique francophone  

E-Print Network (OSTI)

1 Maîtrise et usage des TIC : la situation des enseignants en Belgique francophone Henry Julie discours européen concernant la maîtrise des TIC par les enseignants, les auteurs pointent du doigt les complémentaires et présentent la seule certification TIC existant à l'heure d'écrire ce texte : form@TICEF. La

Paris-Sud XI, Université de

263

Iowa Water and Wastewater Operators Seek SEP Certification in New Pilot Program  

Energy.gov (U.S. Department of Energy (DOE))

The Des Moines Metropolitan Wastewater Reclamation Authority (WRA) and Des Moines Water Works have committed to participate in the Superior Energy Performance (SEP) program as the first members of a new program pilot. SEP recognizes facilities that meet the ISO 50001 global energy management standard and demonstrate improved energy performance.

264

Differential Cryptanalysis of DES-like Cryptosystems  

E-Print Network (OSTI)

The Data Encryption Standard (DES) is the best known and most widely used cryptosystem for civilian applications. It was developed at IBM and adopted by the National Buraeu of Standards in the mid 70's, and has successfully withstood all the attacks published so far in the open literature. In this paper we develop a new type of cryptanalytic attack which can break the reduced variant of DES with eight rounds in a few minutes on a PC and can break any reduced variant of DES (with up to 15 rounds) in less than 2 56 operations. The new attack can be applied to a variety of DES-like substitution/permutation cryptosystems, and demonstrates the crucial role of the (unpublished) design rules.

Eli Biham; Adi Shamir

1991-01-01T23:59:59.000Z

265

HACK Patrice Les coulisses des assistances tlphoniques  

E-Print Network (OSTI)

HACK Patrice 1 ________________________________________________________________ Les coulisses des Criminologie et de Police Technique et Scientifique LXV (2012) 110" #12;HACK Patrice 2 1 ­ Données et méthode

Paris-Sud XI, Université de

266

Technische Potentiale zur Vernderung des deutschen Energiesektors  

Science Journals Connector (OSTI)

Die Orientierung von Energiewirtschaft und -politik an den im 5. Kapitel abgeleiteten strategischen Ansatzpunkten mag vielen Unternehmen des Energiesek-tors auf den ersten Blick irreal und utopisch erscheinen: ...

Peter Hofer; Dr. Janina Scheelhaase

1998-01-01T23:59:59.000Z

267

FACULT DES SCIENCES HUMAINES ET SOCIALES -SORBONNE  

E-Print Network (OSTI)

FACULT? DES SCIENCES HUMAINES ET SOCIALES - SORBONNE MASTERS EN SCIENCES HUMAINES ET SOCIALES ANN?E UNIVERSITAIRE 2013-2014 MENTION SCIENCES DU LANGAGE ­ M1 ET M2 Spécialités > Linguistique et

Pellier, Damien

268

DNER ANNUEL DES AMIS DE LA PRSIDENTE  

E-Print Network (OSTI)

DE LA SOIR?E #12;4 25e Dîner annuel des amis de la Présidente EMILIO B. IMBRIGLIO CPA, CA, MBA, CFE

269

THE HUBBLE SPACE TELESCOPE CLUSTER SUPERNOVA SURVEY. III. CORRELATED PROPERTIES OF TYPE Ia SUPERNOVAE AND THEIR HOSTS AT 0.9 < z < 1.46  

SciTech Connect

Using the sample of Type Ia supernovae (SNe Ia) discovered by the Hubble Space Telescope (HST) Cluster Supernova Survey and augmented with HST-observed SNe Ia in the Great Observatories Origins Deep Survey (GOODS) fields, we search for correlations between the properties of SNe and their host galaxies at high redshift. We use galaxy color and quantitative morphology to determine the red sequence in 25 clusters and develop a model to distinguish passively evolving early-type galaxies from star-forming galaxies in both clusters and the field. With this approach, we identify 6 SN Ia hosts that are early-type cluster members and 11 SN Ia hosts that are early-type field galaxies. We confirm for the first time at z > 0.9 that SNe Ia hosted by early-type galaxies brighten and fade more quickly than SNe Ia hosted by late-type galaxies. We also show that the two samples of hosts produce SNe Ia with similar color distributions. The relatively simple spectral energy distributions expected for passive galaxies enable us to measure stellar masses of early-type SN hosts. In combination with stellar mass estimates of late-type GOODS SN hosts from Thomson and Chary, we investigate the correlation of host mass with Hubble residual observed at lower redshifts. Although the sample is small and the uncertainties are large, a hint of this relation is found at z > 0.9. By simultaneously fitting the average cluster galaxy formation history and dust content to the red-sequence scatters, we show that the reddening of early-type cluster SN hosts is likely E(B - V) {approx}< 0.06. The similarity of the field and cluster early-type host samples suggests that field early-type galaxies that lie on the red sequence may also be minimally affected by dust. Hence, the early-type-hosted SNe Ia studied here occupy a more favorable environment to use as well-characterized high-redshift standard candles than other SNe Ia.

Meyers, J.; Barbary, K.; Fakhouri, H. K.; Goldhaber, G. [Department of Physics, University of California Berkeley, Berkeley, CA 94720 (United States); Aldering, G.; Faccioli, L.; Hsiao, E. [E.O. Lawrence Berkeley National Lab, 1 Cyclotron Rd., Berkeley, CA 94720 (United States); Barrientos, L. F. [Departmento de Astronomia, Pontificia Universidad Catolica de Chile, Santiago (Chile); Brodwin, M. [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States); Dawson, K. S. [Department of Physics and Astronomy, University of Utah, Salt Lake City, UT 84112 (United States); Deustua, S.; Fruchter, A. S. [Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218 (United States); Doi, M.; Ihara, Y. [Institute of Astronomy, Graduate School of Science, University of Tokyo, 2-21-1 Osawa, Mitaka, Tokyo 181-0015 (Japan); Eisenhardt, P. [Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109 (United States); Gilbank, D. G. [Department of Physics and Astronomy, University Of Waterloo, Waterloo, Ontario, N2L 3G1 (Canada); Gladders, M. D. [Department of Astronomy and Astrophysics, University of Chicago, Chicago, IL 60637 (United States); Gonzalez, A. H. [Department of Astronomy, University of Florida, Gainesville, FL 32611 (United States); Hattori, T. [Subaru Telescope, National Astronomical Observatory of Japan, 650 North Aohaku Place, Hilo, HI 96720 (United States); Kashikawa, N., E-mail: jmeyers314@berkeley.edu [National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588 (Japan); Collaboration: Supernova Cosmology Project; and others

2012-05-01T23:59:59.000Z

270

PULSATING REVERSE DETONATION MODELS OF TYPE Ia SUPERNOVAE. I. DETONATION IGNITION  

SciTech Connect

Observational evidences point to a common explosion mechanism of Type Ia supernovae based on a delayed detonation of a white dwarf (WD). Although several scenarios have been proposed and explored by means of one, two, and three-dimensional simulations, the key point still is the understanding of the conditions under which a stable detonation can form in a destabilized WD. One of the possibilities that have been invoked is that an inefficient deflagration leads to the pulsation of a Chandrasekhar-mass WD, followed by formation of an accretion shock around a carbon-oxygen rich core. The accretion shock confines the core and transforms kinetic energy from the collapsing halo into thermal energy of the core, until an inward moving detonation is formed. This chain of events has been termed Pulsating Reverse Detonation (PRD). In this work we explore the robustness of the detonation ignition for different PRD models characterized by the amount of mass burned during the deflagration phase, M {sub defl}. The evolution of the WD up to the formation of the accretion shock has been followed with a three-dimensional hydrodynamical code with nuclear reactions turned off. We found that detonation conditions are achieved for a wide range of M {sub defl}. However, if the nuclear energy released during the deflagration phase is close to the WD binding energy ({approx}0.46 x 10{sup 51} erg {yields} M {sub defl} {approx} 0.30 M {sub sun}) the accretion shock cannot heat and confine the core efficiently and detonation conditions are not robustly achieved.

Bravo, Eduardo; GarcIa-Senz, Domingo [Department de FIsica i Enginyeria Nuclear, Universitat Politecnica de Catalunya, Diagonal 647, 08028 Barcelona (Spain)], E-mail: eduardo.bravo@upc.edu, E-mail: domingo.garcia@upc.edu

2009-04-20T23:59:59.000Z

271

The effect of turbulent intermittency on the deflagration to detonation transition in SN Ia explosions  

E-Print Network (OSTI)

We examine the effects of turbulent intermittency on the deflagration to detonation transition (DDT) in Type Ia supernovae. The Zel'dovich mechanism for DDT requires the formation of a nearly isothermal region of mixed ash and fuel that is larger than a critical size. We primarily consider the hypothesis by Khokhlov et al. and Niemeyer and Woosley that the nearly isothermal, mixed region is produced when the flame makes the transition to the distributed regime. We use two models for the distribution of the turbulent velocity fluctuations to estimate the probability as a function of the density in the exploding white dwarf that a given region of critical size is in the distributed regime due to strong local turbulent stretching of the flame structure. We also estimate lower limits on the number of such regions as a function of density. We find that the distributed regime, and hence perhaps DDT, occurs in a local region of critical size at a density at least a factor of 2-3 larger than predicted for mean conditions that neglect intermittency. This factor brings the transition density to be much larger than the empirical value from observations in most situations. We also consider the intermittency effect on the more stringent conditions for DDT by Lisewski et al. and Woosley. We find that a turbulent velocity of $10^8$ cm/s in a region of size $10^6$ cm, required by Lisewski et al., is rare. We expect that intermittency gives a weaker effect on the Woosley model with stronger criterion. The predicted transition density from this criterion remains below $10^7$ g/cm$^3$ after accounting for intermittency using our intermittency models.

Liubin Pan; J. Craig Wheeler; John Scalo

2008-03-12T23:59:59.000Z

272

THE DETONATION MECHANISM OF THE PULSATIONALLY ASSISTED GRAVITATIONALLY CONFINED DETONATION MODEL OF Type Ia SUPERNOVAE  

SciTech Connect

We describe the detonation mechanism composing the 'pulsationally assisted' gravitationally confined detonation (GCD) model of Type Ia supernovae. This model is analogous to the previous GCD model reported in Jordan et al.; however, the chosen initial conditions produce a substantively different detonation mechanism, resulting from a larger energy release during the deflagration phase. The resulting final kinetic energy and {sup 56}Ni yields conform better to observational values than is the case for the 'classical' GCD models. In the present class of models, the ignition of a deflagration phase leads to a rising, burning plume of ash. The ash breaks out of the surface of the white dwarf, flows laterally around the star, and converges on the collision region at the antipodal point from where it broke out. The amount of energy released during the deflagration phase is enough to cause the star to rapidly expand, so that when the ash reaches the antipodal point, the surface density is too low to initiate a detonation. Instead, as the ash flows into the collision region (while mixing with surface fuel), the star reaches its maximally expanded state and then contracts. The stellar contraction acts to increase the density of the star, including the density in the collision region. This both raises the temperature and density of the fuel-ash mixture in the collision region and ultimately leads to thermodynamic conditions that are necessary for the Zel'dovich gradient mechanism to produce a detonation. We demonstrate feasibility of this scenario with three three-dimensional (3D), full star simulations of this model using the FLASH code. We characterized the simulations by the energy released during the deflagration phase, which ranged from 38% to 78% of the white dwarf's binding energy. We show that the necessary conditions for detonation are achieved in all three of the models.

Jordan, G. C. IV; Graziani, C.; Weide, K.; Norris, J.; Hudson, R.; Lamb, D. Q. [Flash Center for Computational Science, University of Chicago, Chicago, IL 60637 (United States); Fisher, R. T. [Department of Physics, University of Massachusetts Dartmouth, 285 Old Westport Road, North Dartmouth, MA 02740 (United States); Townsley, D. M. [Department of Physics and Astronomy, University of Alabama, Tuscaloosa, AL 35487 (United States); Meakin, C. [Steward Observatory, University of Arizona, Tucson, AZ 85721 (United States); Reid, L. B. [NTEC Environmental Technology, Subiaco WA 6008 (Australia)

2012-11-01T23:59:59.000Z

273

Off-center ignition in type Ia supernova: I. Initial evolution and implications for delayed detonation  

E-Print Network (OSTI)

The explosion of a carbon-oxygen white dwarf as a Type Ia supernova is known to be sensitive to the manner in which the burning is ignited. Studies of the pre-supernova evolution suggest asymmetric, off-center ignition, and here we explore its consequences in two- and three-dimensional simulations. Compared with centrally ignited models, one-sided ignitions initially burn less and release less energy. For the distributions of ignition points studied, ignition within two hemispheres typically leads to the unbinding of the white dwarf, while ignition within a small fraction of one hemisphere does not. We also examine the spreading of the blast over the surface of the white dwarf that occurs as the first plumes of burning erupt from the star. In particular, our studies test whether the collision of strong compressional waves can trigger a detonation on the far side of the star as has been suggested by Plewa et al. (2004). The maximum temperature reached in these collisions is sensitive to how much burning and expansion has already gone on, and to the dimensionality of the calculation. Though detonations are sometimes observed in 2D models, none ever happens in the corresponding 3D calculations. Collisions between the expansion fronts of multiple bubbles also seem, in the usual case, unable to ignite a detonation. "Gravitationally confined detonation" is therefore not a robust mechanism for the explosion. Detonation may still be possible in these models however, either following a pulsation or by spontaneous detonation if the turbulent energy is high enough.

F. K. Roepke; S. E. Woosley; W. Hillebrandt

2006-09-04T23:59:59.000Z

274

A Three-Dimensional Picture of the Delayed-Detonation Model of Type Ia Supernovae  

E-Print Network (OSTI)

Deflagration models poorly explain the observed diversity of SNIa. Current multidimensional simulations of SNIa predict a significant amount of, so far unobserved, carbon and oxygen moving at low velocities. It has been proposed that these drawbacks can be resolved if there is a sudden jump to a detonation (delayed detonation), but this kind of models has been explored mainly in one dimension. Here we present new three-dimensional delayed detonation models in which the deflagraton-to-detonation transition (DDT) takes place in conditions like those favored by one-dimensional models. We have used a SPH code adapted to SNIa with algorithms devised to handle subsonic as well as supersonic combustion fronts. The starting point was a C-O white dwarf of 1.38 solar masses. When the average density on the flame surface reached 2-3x10^7 g/cm^3 a detonation was launched. The detonation wave processed more than 0.3 solar masses of carbon and oxygen, emptying the central regions of the ejecta of unburned fuel and raising its kinetic energy close to the fiducial 10^51 ergs expected from a healthy Type Ia supernova. The final amount of 56Ni synthesized also was in the correct range. However, the mass of carbon and oxygen ejected is still too high. The three-dimensional delayed detonation models explored here show an improvement over pure deflagration models, but they still fail to coincide with basic observational constraints. However, there are many aspects of the model that are still poorly known (geometry of flame ignition, mechanism of DDT, properties of detonation waves traversing a mixture of fuel and ashes). Therefore, it will be worth pursuing its exploration to see if a good SNIa model based on the three-dimensional delayed detonation scenario can be obtained.

Eduardo Bravo; Domingo Garcia-Senz

2007-12-04T23:59:59.000Z

275

Timescale stretch parameterization of Type Ia supernova B-band light curves  

SciTech Connect

R-band intensity measurements along the light curve of Type Ia supernovae discovered by the Cosmology Project (SCP) are fitted in brightness to templates allowing a free parameter the time-axis width factor w identically equal to s times (1+z). The data points are then individually aligned in the time-axis, normalized and K-corrected back to the rest frame, after which the nearly 1300 normalized intensity measurements are found to lie on a well-determined common rest-frame B-band curve which we call the ''composite curve.'' The same procedure is applied to 18 low-redshift Calan/Tololo SNe with Z < 0.11; these nearly 300 B-band photometry points are found to lie on the composite curve equally well. The SCP search technique produces several measurements before maximum light for each supernova. We demonstrate that the linear stretch factor, s, which parameterizes the light-curve timescale appears independent of z, and applies equally well to the declining and rising parts of the light curve. In fact, the B band template that best fits this composite curve fits the individual supernova photometry data when stretched by a factor s with chi 2/DoF {approx} 1, thus as well as any parameterization can, given the current data sets. The measurement of the data of explosion, however, is model dependent and not tightly constrained by the current data. We also demonstrate the 1 + z light-cure time-axis broadening expected from cosmological expansion. This argues strongly against alternative explanations, such as tired light, for the redshift of distant objects.

Goldhaber, G.; Groom, D.E.; Kim, A.; Aldering, G.; Astier, P.; Conley, A.; Deustua, S.E.; Ellis, R.; Fabbro, S.; Fruchter, A.S.; Goobar, A.; Hook, I.; Irwin, M.; Kim, M.; Knop, R.A.; Lidman, C.; McMahon, R.; Nugent, P.E.; Pain, R.; Panagia, N.; Pennypacker, C.R.; Perlmutter, S.; Ruiz-Lapuente, P.; Schaefer, B.; Walton, N.A.; York, T.

2001-04-01T23:59:59.000Z

276

Exploring Cosmological Expansion Parametrizations with the Gold SnIa Dataset  

E-Print Network (OSTI)

We use the SnIa Gold dataset to compare LCDM with 10 representative parametrizations of the recent Hubble expansion history $H(z)$. For the comparison we use two statistical tests; the usual $\\chi_{min}^2$ which is insensitive to the parametrization number of parameters, and a statistic we call the p-test which depends on both the value of $\\chi_{min}^2$ and the number $n$ of the parametrization parameters. The p-test measures the confidence level to which the parameter values corresponding to LCDM are excluded from the viewpoint of the parametrization tested. For example, for a linear equation of state parametrization $w(z)=w_0 + w_1 z$ the LCDM parameter values ($w_0=-1$, $w_1=0$) are excluded at 75% confidence level. We use a flat prior and $\\Omega_{0m}=0.3$. All parametrizations tested are consistent with the Gold dataset at their best fit. According to both statistical tests, the worst fits among the 10 parametrizations, correspond to the Chaplygin gas, the brane world and the Cardassian parametrizations. The best fit is achieved by oscillating parametrizations which can exclude the parameter values corresponding to LCDM at 85% confidence level. Even though this level of significance does not provide a statistically significant exclusion of LCDM (it is less than $2\\sigma$) and does not by itself constitute conclusive evidence for oscillations in the cosmological expansion, when combined with similar independent recent evidence for oscillations coming from the CMB and matter power spectra it becomes an issue worth of further investigation.

R. Lazkoz; S. Nesseris; L. Perivolaropoulos

2005-11-10T23:59:59.000Z

277

Chapitres Choisis de Theorie des Probabilites  

E-Print Network (OSTI)

;2 #12;Table des mati`eres Table des mati`eres 3 1 Le th´eor`eme limite local 5 1.1 La probl´ematique . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1.2 ´Enonc´e du th´eor`eme limite local . . . . . . . . . . . . . . . . . . . . . . . . 5 1.3 Preuve du th´eor`eme limite local . . . . . . . . . . . . . . . . . . . . . . . . . 7 1.4 Br

Velenik, Yvan

278

Grosplansurl'anne desMathspourlaTerre  

E-Print Network (OSTI)

on le souhai tera ;c'estlatechniqueCAES(compressed air energy storage). « Pour le stockage à grande leur nombre, pour des raisons géographiques. Suivant la même logique, l'eau peut être remplacée par l'air primerl'air,quipourraêtredétenduulté rieurement dans des turbines afin de restituer l'électricité quand

Dambrine, Marc

279

Le territoire numrique organisationnel l'preuve des pratiques socio-numriques des salaris sur internet  

E-Print Network (OSTI)

principale se rapportant à la dimension politique des technologies dans l'espace organisationnel. Celle-ci se nourrit de tensions relatives à la cohabitation entre les pratiques internet et les dispositifs intranet des salariés ; intranet ; traces numériques; cultures numériques ; sociologie de la traduction

Paris-Sud XI, Université de

280

Table 2 -Lime use and practices on Corn, major producing states, 2001 CO GA IL IN IA KS KY MI MN MO NE NY NC ND OH PA SD TX WI Area  

E-Print Network (OSTI)

Table 2 - Lime use and practices on Corn, major producing states, 2001 CO GA IL IN IA KS KY MI MN.7 Table 2 - Lime use and practices on Corn, major producing states, 2000 CO IL IN IA KS KY MI MN MO NE NY use and practices on Corn, major producing states, 1999 CO IL IN IA KS KY MI MN MO NE NC OH SD TX WI

Kammen, Daniel M.

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While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
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281

Fisica Geral IA (2010/1) Nome 1 2 3 R1 R2 R3 Media Conc  

E-Print Network (OSTI)

Fisica Geral IA (2010/1) Nome 1 2 3 R1 R2 R3 M´edia Conc 1 ANDERSON SILVEIRA SALDANHA 0.5 5.2 4.7 0.7 3.5 4.5 1.5 - - 3.57 D M´edia 2.60 4.64 5.93 5.54 6.08 8.37 4.60 #12;20 40 60 80 100 A B C D FF 23

Stariolo, Daniel Adrián

282

Des Grune Emissionshaus DGE GmbH | Open Energy Information  

Open Energy Info (EERE)

Solar, Wind energy Product: Des Grune Emissionshaus (DGE) GmbH is a financier of German wind and solar projects. References: Des Grune Emissionshaus (DGE) GmbH1 This...

283

Thme 5: rsolution numrique des EDP Problmes statiques (cours 1)  

E-Print Network (OSTI)

'EDP ?quation des ondes L'équation des ondes ou « de d'Alembert » : 2u t2 - c2 u = 0 (1) où u = u(#­r , t) est

Spiga, Aymeric

284

UNE BR`EVE HISTOIRE DES NOMBRES PHILIPPE LANGEVIN  

E-Print Network (OSTI)

'eologiques montrent que l'histoire ( occidentale ) des nombres prend source chez les 'egyp* *tiens et les babyloniens

Faccanoni, Gloria

285

Formation des gnralistes, formation des spcialistes. De la dualit internat/certificats dtudes spcialises aux preuves classantes nationales  

Science Journals Connector (OSTI)

Les modalits de contrle des connaissances nont pas une simple fonction anecdotique ou partielle dans lorganisation des tudes de mdecine. Elles sont au contraire essentielles, et modlent la fois le con...

Daniel Wallach

2011-01-01T23:59:59.000Z

286

PLC IMPLEMENTATION OF A DES SUPERVISOR FOR A MANUFACTURING  

E-Print Network (OSTI)

PLC IMPLEMENTATION OF A DES SUPERVISOR FOR A MANUFACTURING TESTBED: AN IMPLEMENTATION PERSPECTIVE Copyright by Ryan James Leduc 1996 #12;Title: PLC Implementation of A DES Supervisor for a Manufacturing, and issues involved in implementing DES supervisors on programmable logic controllers (PLC). A PLC based

Leduc, Ryan

287

SPECTROSCOPIE INFRAROUGE ET DYNAMIQUE DES RSEAUX par M. BALKANSKI  

E-Print Network (OSTI)

semiconducteurs, tels que CdS, ZnS et silicium. Analyse des effets des imperfections sur des vibra- tions de, taking specific examples in recent studies on some semiconductors,such as CdS, ZnS and silicon of experimental studies are taking in the case of highly doped silicon. Some theoretical considerations

Paris-Sud XI, Université de

288

Organisation des tudes et pratique de la mdecine avant 1971  

Science Journals Connector (OSTI)

Il y a toujours eu, et il y aura toujours, des changements et des rformes des tudes de mdecine. Comme ce livre est consacr aux changements lis linstauration dun Numerus clausus en 1971, il parat opportu...

Daniel Wallach

2011-01-01T23:59:59.000Z

289

First detection of $^{56}$Co gamma-ray lines from type Ia supernova (SN2014J) with INTEGRAL  

E-Print Network (OSTI)

We report the first ever detection of $^{56}$Co lines at 847 and 1237 keV and a continuum in the 200-400 keV band from the Type Ia supernova SN2014J in M82 with INTEGRAL observatory. The data were taken between 50th and 100th day since the SN2014J outburst. The line fluxes suggest that $0.62\\pm0.13~M\\odot$ of radioactive $^{56}$Ni were synthesized during the explosion. Line broadening gives a characteristic ejecta expansion velocity $V_e\\sim 2100\\pm 500~{\\rm km~s^{-1}}$. The flux at lower energies (200-400 keV) flux is consistent with the three-photon positronium annihilation, Compton downscattering and absorption in the $\\sim~1.4~M\\odot$ ejecta composed from equal fractions of iron-group and intermediate-mass elements and a kinetic energy $E_k\\sim 1.4~10^{51}~{\\rm erg}$. All these parameters are in broad agreement with a "canonical" model of an explosion of a Chandrasekhar-mass White Dwarf (WD), providing an unambiguous proof of the nature of Type Ia supernovae as a thermonuclear explosion of a solar mass co...

Churazov, E; Isern, J; Kndlseder, J; Jean, P; Lebrun, F; Chugai, N; Grebenev, S; Bravo, E; Sazonov, S; Renaud, M

2014-01-01T23:59:59.000Z

290

Chasing the phantom: A closer look at type Ia supernovae and the dark energy equation of state  

Science Journals Connector (OSTI)

Some recent observations provide >2? evidence for phantom dark energya value of the dark energy equation of state less than the cosmological-constant value of ?1. We focus on constraining the equation of state by combining current data from the most mature geometrical probes of dark energy: type Ia supernovae (SNe Ia) from the Supernova Legacy Survey (SNLS3), the Supernova Cosmology Project (Union2.1), and the Pan-STARRS1 survey (PS1); cosmic microwave background measurements from Planck and WMAP9; and a combination of measurements of baryon acoustic oscillations. The combined data are consistent with w=?1 for the Union2.1 sample, though they present moderate (?1.9?) evidence for a phantom value when either the SNLS3 or PS1 sample is used instead. We study the dependence of the constraints on the redshift, stretch, color, and host galaxy stellar mass of SNe, but we find no unusual trends. In contrast, the constraints strongly depend on any external H0 prior: a higher adopted value for the direct measurement of the Hubble constant (H0?71??km/s/Mpc) leads to ?2? evidence for phantom dark energy. Given Planck data, we can therefore make the following statement at 2? confidence: either the SNLS3 and PS1 data have systematics that remain unaccounted for or the Hubble constant is below 71??km/s/Mpc; else the dark energy equation of state is indeed phantom.

Daniel L. Shafer and Dragan Huterer

2014-03-06T23:59:59.000Z

291

Zur relativkonduktometrischer bestimmung des schwefels in erdlprodukten  

Science Journals Connector (OSTI)

Zusammenfassung Die Methode der relativkonduktometrischen Bestimmung des Schwefels, die bereits mit gutem Erfolg in der Mikroelementaranalyse durchgefhrt wird, wurde auf die Bestimmung des Schwefels in einigen Erdlprodukten angewandt. Die angegebenen Analysenergebnisse zeigen einerseits die sehr gute Brauchbarkeit der Methode zur raschen Erfassung des Gesamtschwefelgehaltes, andererseits gibt die modifizierte Methode eine Aussage ber die zeitliche Abfolge der Verbrennung schwefelhaltiger Verbindungen. The relative conductometric method for the determination of sulphur, which has already been used for microelemental analysis, is applied to various petroleum products. The results obtained show that the method is not only very suitable for the rapid determination of the total sulphur content but also gives information on the nature of the combustion processes for sulphur-containing compounds.

H. Malissa; L. Machherndl; E. Pell

1965-01-01T23:59:59.000Z

292

Type Ia Supernova Discoveries at z>1 From the Hubble Space Telescope: Evidence for Past Deceleration and Constraints on Dark Energy Evolution  

E-Print Network (OSTI)

We have discovered 16 Type Ia supernovae (SNe Ia) with the Hubble Space Telescope (HST) and have used them to provide the first conclusive evidence for cosmic deceleration that preceded the current epoch of cosmic acceleration. These objects, discovered during the course of the GOODS ACS Treasury program, include 6 of the 7 highest-redshift SNe Ia known, all at z>1.25, and populate the Hubble diagram in unexplored territory. The luminosity distances to these and 170 previous SNe Ia are provided. A purely kinematic interpretation of the SN Ia sample provides evidence at the > 99% confidence level for a transition from deceleration to acceleration or similarly, strong evidence for a cosmic jerk. Using a simple model of the expansion history, the transition between the two epochs is constrained to be at z=0.46 +/- 0.13. The data are consistent with the cosmic concordance model of Omega_M ~ 0.3, Omega_Lambda~0.7 (chi^2_dof=1.06), and are inconsistent with a simple model of evolution or dust as an alternative to dark energy. For a flat Universe with a cosmological constant. When combined with external flat-Universe constraints we find w=-1.02 + 0.13 - 0.19 (and $dark energy, P = w\\rho c^2. Joint constraints on both the recent equation of state of dark energy, $w_0$, and its time evolution, dw/dz, are a factor of ~8 more precise than its first estimate and twice as precise as those without the SNe Ia discovered with HST. Our constraints are consistent with the static nature of and value of w expected for a cosmological constant (i.e., w_0 = -1.0, dw/dz = 0), and are inconsistent with very rapid evolution of dark energy. We address consequences of evolving dark energy for the fate of the Universe.

Adam G. Riess; Louis-Gregory Strolger; John Tonry; Stefano Casertano; Henry C. Ferguson; Bahram Mobasher; Peter Challis; Alexei V. Filippenko; Saurabh Jha; Weidong Li; Ryan Chornock; Robert P. Kirshner; Bruno Leibundgut; Mark Dickinson; Mario Livio; Mauro Giavalisco; Charles C. Steidel; Narciso Benitez; Zlatan Tsvetanov

2004-02-23T23:59:59.000Z

293

Failed-detonation Supernovae: Subluminous Low-velocity Ia Supernovae and their Kicked Remnant White Dwarfs with Iron-rich Cores  

Science Journals Connector (OSTI)

Type Ia supernovae (SNe Ia) originate from the thermonuclear explosions of carbon-oxygen (C-O) white dwarfs (WDs). The single-degenerate scenario is a well-explored model of SNe Ia where unstable thermonuclear burning initiates in an accreting, Chandrasekhar-mass WD and forms an advancing flame. By several proposed physical processes, the rising, burning material triggers a detonation, which subsequently consumes and unbinds the WD. However, if a detonation is not triggered and the deflagration is too weak to unbind the star, a completely different scenario unfolds. We explore the failure of the gravitationally confined detonation mechanism of SNe Ia, and demonstrate through two-dimensional and three-dimensional simulations the properties of failed-detonation SNe. We show that failed-detonation SNe expel a few 0.1 M ? of burned and partially burned material and that a fraction of the material falls back onto the WD, polluting the remnant WD with intermediate-mass and iron-group elements that likely segregate to the core forming a WD whose core is iron rich. The remaining material is asymmetrically ejected at velocities comparable to the escape velocity from the WD, and in response, the WD is kicked to velocities of a few hundred km s1. These kicks may unbind the binary and eject a runaway/hypervelocity WD. Although the energy and ejected mass of the failed-detonation SN are a fraction of typical thermonuclear SNe, they are likely to appear as subluminous low-velocity SNe Ia. Such failed detonations might therefore explain or are related to the observed branch of peculiar SNe Ia, such as the family of low-velocity subluminous SNe (SN 2002cx/SN 2008ha-like SNe).

George C. Jordan, IV; Hagai B. Perets; Robert T. Fisher; Daniel R. van Rossum

2012-01-01T23:59:59.000Z

294

FAILED-DETONATION SUPERNOVAE: SUBLUMINOUS LOW-VELOCITY Ia SUPERNOVAE AND THEIR KICKED REMNANT WHITE DWARFS WITH IRON-RICH CORES  

SciTech Connect

Type Ia supernovae (SNe Ia) originate from the thermonuclear explosions of carbon-oxygen (C-O) white dwarfs (WDs). The single-degenerate scenario is a well-explored model of SNe Ia where unstable thermonuclear burning initiates in an accreting, Chandrasekhar-mass WD and forms an advancing flame. By several proposed physical processes, the rising, burning material triggers a detonation, which subsequently consumes and unbinds the WD. However, if a detonation is not triggered and the deflagration is too weak to unbind the star, a completely different scenario unfolds. We explore the failure of the gravitationally confined detonation mechanism of SNe Ia, and demonstrate through two-dimensional and three-dimensional simulations the properties of failed-detonation SNe. We show that failed-detonation SNe expel a few 0.1 M{sub Sun} of burned and partially burned material and that a fraction of the material falls back onto the WD, polluting the remnant WD with intermediate-mass and iron-group elements that likely segregate to the core forming a WD whose core is iron rich. The remaining material is asymmetrically ejected at velocities comparable to the escape velocity from the WD, and in response, the WD is kicked to velocities of a few hundred km s{sup -1}. These kicks may unbind the binary and eject a runaway/hypervelocity WD. Although the energy and ejected mass of the failed-detonation SN are a fraction of typical thermonuclear SNe, they are likely to appear as subluminous low-velocity SNe Ia. Such failed detonations might therefore explain or are related to the observed branch of peculiar SNe Ia, such as the family of low-velocity subluminous SNe (SN 2002cx/SN 2008ha-like SNe).

Jordan, George C. IV; Van Rossum, Daniel R. [Center for Astrophysical Thermonuclear Flashes, University of Chicago, Chicago, IL 60637 (United States); Perets, Hagai B. [Physics Department, Technion, Israel Institute of Technology, Haifa 32000 (Israel); Fisher, Robert T. [Department of Physics, University of Massachusetts Dartmouth, 285 Old Westport Road, North Dartmouth, MA 02740 (United States)

2012-12-20T23:59:59.000Z

295

MASK : une mthode d'ingnierie des connaissances pour l'analyse et la structuration des connaissances  

E-Print Network (OSTI)

'information, qui lui, est déjà tangible. C'est la lignée des nouvelles technologies de l'information, avec la gestion électronique des documents, les moteurs de recherche en intranet, les " datawarehouse ", " data, par une vision très instrumentale (l'arrivée massive et tonitruante des nouvelles technologies de l

Paris-Sud XI, Université de

296

He H`ike no ka Ho`opihapiha `ia o ka Pepa Noi Komo no ka Papahana Ho`omkaukau Kumu `iwi `o Kahuawaiola  

E-Print Network (OSTI)

45 a `oi ma ka pae 300 a ma luna a`e paha a e k ana n koina `lelo a mo`omeheu Hawai`i e helu `ia nei`omeheu Hawai`i. 7. ka puka `ana ma ho`okahi o n papa penei: HWST 205, 471, 472, 473, 474; a i `ole ka `ae a ka `ekolu kau kona l`ihi i kkulu `ia no ka ho`omkaukau `ana i n kumu Mauli Ola Hawai`i no ka ho`ona`auao ma

Wiegner, Tracy N.

297

INFO-F-309 Administration des Systmes TP1: Installation de Linux et gestion des packages  

E-Print Network (OSTI)

virtuelle avant de la lancer pour mon- ter l'image .iso disponible dans le répertoire /serveur/logicielles/tpINFO-F-309 ­ Administration des Systèmes TP1: Installation de Linux et gestion des packages trouverez l(es) image(s) du TP dans le répertoire : /serveur/logicielles/tp-adminsys/partie1 Ce répertoire

Collette. Sébastien

298

APPORT DES IMAGES-SATELLITE DANS LE SUIVI DES NUAGES DE POUSSIERES EN  

E-Print Network (OSTI)

the few Sahelian and Saharian weather monitoring stations confirmed exactness of the satellite imagery5 APPORT DES IMAGES-SATELLITE DANS LE SUIVI DES NUAGES DE POUSSIERES EN ZONES SAHARIENNE ET SUB - © Revue Télédétection, 2008, vol. 8, n° 1, p. 5-15 Résumé : Les images du satellite Météosat constituent

Paris-Sud XI, Université de

299

Zur Zweck(in)adquanz einer Implementierung der Passivierungs- und Bewertungsnormen von ungewissen Verbindlichkeiten gem den IAS und US-GAAP in deutsches Handels- und Steuerbilanzrecht  

Science Journals Connector (OSTI)

Das deutsche Bilanzrecht gehorcht unstreitig dem obersten Leitprinzip des Glubigerbzw. (Fremd-)Kapitalgeberschutzes;1027 das deutsche Rechnungslegungssystem ist unter dieser Primrzielsetzung gewachsen und gerei...

Marc Pisoke

2004-01-01T23:59:59.000Z

300

cole des Jeunes Explorateurs Granby (Quebec)  

E-Print Network (OSTI)

?cole des Jeunes Explorateurs Granby (Quebec) www.ecolelesjeunesexplorateurs.com Job Title Explorateurs 210, Denison Est Granby (Quebec) J2G 8E3 Description of School L'?cole Les Jeunes Explorateurs and develop dynamic and stimulating lessons according to the Quebec Education Program, as well as the school

Note: This page contains sample records for the topic "des moines ia" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
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301

Fusion et volution des caractristiques topologiques  

E-Print Network (OSTI)

exactement n 1 types de fusions possibles, qui sont les fusions de dimension 0 � n 1. Pour pouvoir e#27Chapitre 6 Fusion et �volution des caract�ristiques topologiques Chapitre 5, nous avons d�#28;ni la carte topologique en dimension 3. Cette d�#28;nition utilise l'op�ration de fusion, que nous avons pr

Damiand, Guillaume

302

FUSION ET VOLUTION DES CARACTRISTIQUES TOPOLOGIQUES  

E-Print Network (OSTI)

n, il existe exactement n-1 types de fusions possibles, qui sont les fusions de dimension 0 à n - 1CHAPITRE 6 FUSION ET ?VOLUTION DES CARACT?RISTIQUES TOPOLOGIQUES Chapitre 5, nous avons défini la carte topologique en dimension 3. Cette définition utilise l'opération de fusion, que nous avons

Damiand, Guillaume

303

TUDE HISTOCHIMIQUE DES MUCINES DUODNALES DU LAPIN  

E-Print Network (OSTI)

- réactif de Schiff (APS) selon Gnaa (1968) pour l'étude des mucines riches en alpha-glycols (mucines neutres et certaines mucines acides), - APS amylase pour l'élimination éventuelle du glycogène, - Azur

Paris-Sud XI, Université de

304

Die wasserstoffspeicherkapazitt des Raney-Nickels  

Science Journals Connector (OSTI)

Zusammenfassung Die elektrochemisch be- und entladbare Wasserstoffkapazitt des Raney-Nickels hngt auch bei konstanter Oxydbedeckung und unverndertem Al-Gehalt stark von der Vorbehandlung ab. BET-Messungen ergeben, da der Wasserstoffgehalt proportional zur BET-Oberflche des Katalysators ist. Das Raney-Nickel speichert ca 0,00072 Ah/m2 bzw. 1 H-Atom pro Ni-Oberflchenatom. Die elektrochemisch reversible Speicherung von Wasserstoff mit Raney-Nickel kann deshalb als Adsorption des Wasserstoffs an der Oberflche des Katalysators whrend der Beladung und als Oxydation der Wasserstoff-Bedeckung whrend der Entladung betrachtet werden. The electrochemically chargeable and dischargeable hydrogen capacity of the Raney-nickel catalyst was investigated at constant state of oxidation and constant aluminium concentration as a function of pretreatment. The present extensive BET measurements indicate that the amount of hydrogen sorbate is exactly proportional to the BET surface within the limit of measuring and calculating accuracy; quantitatively the relation is 0,00072 Ah/m2, corresponding to 1 H-atom per 1 Ni-atom of the inner surface. Thus the reversible part of the hydrogen sorption capacity of Raney nickel may be explained by sorption of hydrogen at the nickel BET surface, and subsequent anodic oxidation of this hydrogen coating layer under discharge.

H.H. Ewe

1972-01-01T23:59:59.000Z

305

Direction des bibliothques Bibliothque de chimie  

E-Print Network (OSTI)

lien suivant : https://origin-scifinder.cas.org/registration #12;6 N.B : II est obligatoire de s.ca. #12;7 Pour débuter: Cliquer sur le lien suivant et suivre les étapes : https « Search ». #12;10 La zone, ci-dessous contient des champs pour limiter ou affiner votre recherche. Les

Leclercq, Remi

306

Studienordnung des Masterstudiengangs ,,Health Care Management"  

E-Print Network (OSTI)

Studienordnung des Masterstudiengangs ,,Health Care Management" an der Ernst-Moritz-Arndt-Universit�t Greifswald die fol- gende Studienordnung f�r den Masterstudiengang ,,Health Care Manage- ment" als Satzung Masterstudiengang (M.Sc.) ,,Health Care Management" an der Ernst-Moritz- Arndt-Universit�t Greifswald vom 15. M

Greifswald, Ernst-Moritz-Arndt-Universität

307

Service des finances Le saviez-vous ?  

E-Print Network (OSTI)

. La certification ISO 9001 atteste qu'une organisation a développé des pratiques de gestion qui responsable Penser autrement, acheter mieux ! L' Organisation internationale de normalisation (ISO) a publié durable dans une organisation : ISO 26 000 Responsabilité sociétale. Une organisation engagée envers le

308

Le microscope des mathmaticiens Tribune du Net  

E-Print Network (OSTI)

cette "tribune" Interactif ! Deux parties : 1 les TIC du chercheur TIC = Technologies de l'Information et de la Communication #12;Contenu de cette "tribune" Interactif ! Deux parties : 1 les TIC du chercheur TIC = Technologies de l'Information et de la Communication 2 ordinateur : le microscope des

Theyssier, Guillaume

309

INRA Laboratoire Croissance et Mtabolisme des Herbivores  

E-Print Network (OSTI)

'origine du mouvement, capable de transformer ' l'énergie des nutriments en force motrice. Enfin, c'est le sque- lette, et constituent le relais de la force motrice développée par le muscle. Ces différents

Paris-Sud XI, Université de

310

Le Gabon et la question de la societ de l'information. Approche spatiale des rseaux et des enjeux gopolitiques des technologies de la communication.  

E-Print Network (OSTI)

??I - LE CONTEXTE PREALABLE A L'ETUDE Au niveau international et au niveau des pays dont le Gabon, les annes 1990 ont vu merger une (more)

Makanga Bala, Martial Ppin

2010-01-01T23:59:59.000Z

311

Other Participants 1991 | U.S. DOE Office of Science (SC)  

Office of Science (SC) Website

1 1 National Science Bowl® (NSB) NSB Home About National Science Bowl Contacts Regional Science Bowl Coordinators National Science Bowl FAQ's Alumni Past National Science Bowl Winners Past National Science Bowl Photos National Science Bowl Logos High School Middle School Attending National Event Volunteers 2013 Competition Results News Media WDTS Home Contact Information National Science Bowl® U.S. Department of Energy SC-27/ Forrestal Building 1000 Independence Ave., SW Washington, DC 20585 P: 202-586-6702 E: National.Science.Bowl@science.doe.gov Past High School National Science Bowl Winners (1991 - 2012) Other Participants 1991 Print Text Size: A A A RSS Feeds FeedbackShare Page Abraham Lincoln High School , Des Moines , IA Beavercreek High School , Beavercreek , OH Crystal Lake South High School , Crystal Lake , IL

312

U.S. DEPARTMENT OF I!NI!RGY EERE PROJECT MANAGEMENT CENTER NFPA DETTIUlIINATION  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

I!NI!RGY I!NI!RGY EERE PROJECT MANAGEMENT CENTER NFPA DETTIUlIINATION RECIPIENT:Magelian Midstream Partners. LP (SEP Sub-recipient of the Iowa Office of Energy STATE: IA Independence) PROJECf TITLE: Magellan Des Moines Biodiesel Terminal Project Page 10f3 Funding Opportunity Announcement Number Procurement Instrument Number NEPA Control Number CID Number DE FDA 000052 OE-EE-OOOO162 GFQ-OOOO162-016 EE162 Based on my review orlbe information concerning tbe proposed action, as NEPA Compliance Officer (authorl7.ed under DOE Order 451.JA), I have made the following determination: ex, EA, ~:IS APPI<:NDIX AND NUMBER: Description: 85.1 Actions to oonserve energy, demonstrate potential energy conservation, and promote energy-efficiency that do not increase the indoor concentrations of potentially harmful substances. These actions may involve financial and techmcal

313

Roeder Farms | Open Energy Information  

Open Energy Info (EERE)

Roeder Farms Roeder Farms Jump to: navigation, search Name Roeder Farms Facility Roeder Farms Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner 5045 Wind Partners Developer 5045 Wind Partners Energy Purchaser Alliant Energy Location Des Moines IA Coordinates 43.29729211°, -93.28315258° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":43.29729211,"lon":-93.28315258,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

314

Western Governors Association Technical advisory Group  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

performance cleanup closure performance cleanup closure M E Environmental Management WIPP Update William (Bill) Mackie bill.mackie@wipp.ws July 24, 2007 Kansas City, Missouri safety performance cleanup closure 2 M E Environmental Management Total Shipments (as of 7/17/07) Contact Handled 5,928 Remote Handled 41 Total 5,969 safety performance cleanup closure 3 M E Environmental Management Argonne National Laboratory Shipment Campaign * Anticipate starting shipping in November 2007 * FY-2008 Projected Shipment Profile - Nov 07 2 Mar 08 2 - Dec 07 2 Apr 08 2 - Jan 08 2 May 08 2 - Feb 08 2 Jun 08 2 * Road Show scheduled for week of August 20 th . Begin at ANL, stop at Des Moines, IA; Lincoln, NE; Grand

315

Obama Administration Announces More Than $16 Million for Energy Projects in  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

16 Million for Energy 16 Million for Energy Projects in Iowa Obama Administration Announces More Than $16 Million for Energy Projects in Iowa June 22, 2009 - 12:00am Addthis Des Moines, IA - U.S. Department of Energy Secretary Steven Chu today announced more than $16 million in American Recovery and Reinvestment Act funding to support energy efficiency and renewable energy projects in Iowa. Under DOE's State Energy Program, states have proposed statewide plans that prioritize energy savings, create or retain jobs, increase the use of renewable energy, and reduce greenhouse gas emissions. This initiative is part of the Obama Administration's national strategy to support job growth, while making a historic down payment on clean energy. "This funding will provide an important boost for state economies, help put

316

E-Print Network 3.0 - avec des agents Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

agents Search Powered by Explorit Topic List Advanced Search Sample search results for: avec des agents Page: << < 1 2 3 4 5 > >> 1 Direction des Ressources Humaines Service des...

317

E-Print Network 3.0 - actions physiologiques des Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

Programme des Enseignements - Summary: (Croissance et dveloppement) CM : 29h TD : 9h TP : 16h Aspects physiologiques de la formation des fruits et... : 12h Etude des systmes...

318

Infection naturelle des primates non humains par les spumavirus et transmission inter-espces au Gabon.  

E-Print Network (OSTI)

??Les spumavirus (SV) sont des rtrovirus exognes de la sous-famille des Spumavirinae appartenant la famille des Retroviridae. Linfection naturelle chez les primates non humains (more)

Mouinga Ondeme, Augustin Ghislain

2011-01-01T23:59:59.000Z

319

Adaptation de la mthode de rgularisation au traitement des donnes de well test.  

E-Print Network (OSTI)

??L'interprtation des essais de puits a pour objectif principal l'identification des paramtres caractristiques d'un modle reprsentant le rservoir. En effet, durant des dcennies, de nombreux (more)

Saifi, Redha

2014-01-01T23:59:59.000Z

320

presentee `a l'Ecole Nationale Superieure des Telecommunications  

E-Print Network (OSTI)

TH`ESE pr´esent´ee `a l'´Ecole Nationale Sup´erieure des T´el´ecommunications pour obtenir le grade de Docteur de l'´Ecole Nationale Sup´erieure des T´el´ecommunications Sp´ecialit´e : Informatique et´e de Gent, Belgique Professeur G´erard H´ebuterne Institut National des T´el´ecommunications, France

Paris-Sud XI, Université de

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


321

Explorer des actualites multimedia dans le web de donnees  

E-Print Network (OSTI)

Explorer des actualit´es multim´edia dans le web de donn´ees Rapha¨el Troncy1 CWI Amsterdam´ecifiques au multim´edia peuvent ^etre utilis´es conjoin- tement mais cela pose des probl`emes d et naviguer dans des contenus multim´edia d'ac- tualit´es contextualis´es. Nous pr´esentons une

Paris-Sud XI, Université de

322

Section des Units de recherche Rapport de l'AERES  

E-Print Network (OSTI)

Section des Unités de recherche Rapport de l'AERES sur l'unité : ELLIADD (?dition, Langages : Université de Franche-Comté Janvier 2011 #12;Section des Unités de recherche Rapport de l'AERES sur l Délégué scientifique représentant de l'AERES : M. Franck NEVEU Représentant(s) des établissements et

Jeanjean, Louis

323

CHALEURS SPCIFIQUES DES VAPEURS Par A. LEDUC.  

E-Print Network (OSTI)

du fluide. un cycle obtenu en ajoutant au cycle de Rankine un prolongement convenable ; ° d'où le nom formule de Laplace (y) ou dans celle de Rankine (n). A cet effet, j'ai fait parcourir, à l'unité de masse de « Méthode des Cycles ». Combinant ensuite la formule obtenue avec la formule classique on obtient

Paris-Sud XI, Université de

324

Die Erheblichkeit Des Humanismus In Durftiger Zeit  

E-Print Network (OSTI)

wir, meiner Ansicht nach, viel besser im Stande sein, die Aufforderung so gedankenreicher Kritiker wie Patocka und Heidegger zu akzeptieren und zusammen mi f ihnen unsere humanistischen Grundstze kritisch zu berprfen. I Die Aufgabe, unsere... heilen oder tten werden--ob es zu der F.ndsynthese kommt oder nicht . Ich wrde zugeben, da es sich auf dem Niveau der alltglichen Entscheidungen nicht darum handelt, ob wir uns von den moralischen Kriterien des Humanismus leiten lassen, oder von...

Kohak, Erazim

1980-03-01T23:59:59.000Z

325

SECRETARIAT GENERAL Direction des ressources humaines  

E-Print Network (OSTI)

affaires générales, délégation Ile-de-France Ouest et Nord, - Séverine Rollet, responsable ressources des travaux de réhabilitation a débuté durant l'été - IDF Ouest et Nord : réorganisation entre restaurant de Meudon et celui de Verrières, plus d'autonomie du gérant de Verrières - Nord Est : lancement

Canet, Léonie

326

Jasper Johns in der Nachfolge des Ready-mades.  

E-Print Network (OSTI)

??Die Arbeit untersucht, wie die Einfhrung des Ready-mades in die Kunstwelt die Arbeitsweise von Knstlern sowie die Produktion und Wahrnehmung von Kunstwerken beeinflusst hat. Dies (more)

Mayer, Lynette Mildred

2013-01-01T23:59:59.000Z

327

Untersuchungen ber die quantitative Umsetzung des organischen Wasserstoffes in Schwefelsure  

Science Journals Connector (OSTI)

Eine volumetrische Methode zur Bestimmung des Wasserstoffgehaltes organischer Verbindungen in Form von Schwefelsure wird dargelegt. Die Verbrennungen werden in Gegenwart von Schwefel, Schwefeldioxid oder Schwefe...

S. Mlink; M. Kerecsnyi Hermann

1967-01-01T23:59:59.000Z

328

Evaluierung geoelektrischer Tiefensondierungen im Neogen und Pleistozn des nrdlichen Burgenlandes.  

E-Print Network (OSTI)

??Im Rahmen der Diplomarbeit wurden nach einer Modellierung geoelektrischer Widerstandsmodelle mit dem Programm RES2DMOD vier geologisch unterschiedliche Bereiche des nrdlichen Burgenlandes mit der Methode der (more)

Kardeis, Gerald Ludwig

2009-01-01T23:59:59.000Z

329

Derzeitiger Stand des organisierten Rettungsdienstes in der Bundesrepublik Deutschland  

Science Journals Connector (OSTI)

Durch tabellarische Zusammenstellung zahlreicher Parameter wird der derzeitige Stand des Rettungswesens in der Bundesrepublik Deutschland analysiert. Auer einem Soll-Ist-Vergleich der Rettungsmittel werden au...

G. Asche

1979-01-01T23:59:59.000Z

330

Heutige und knftige Lsungen des Stra?engterverkehrs  

Science Journals Connector (OSTI)

Im Folgenden werden neue technische Entwicklungen zur Lsung der Probleme des Stra?engterverkehrs dargestellt. Diese Innovationen werden teilweise auf der diesjhrigen IAA Nutzfahrzeuge ausgestellt werden, te...

Erich Hoepkee

2000-09-01T23:59:59.000Z

331

Populationskologie des in Argentinien eingebrgerten europischen Feldhasen (Lepus europaeus)  

Science Journals Connector (OSTI)

Whrend der Wintermonate Mai-August der Jahre 1982 und 1983 wurden in Mittel- und Sdargentinien Untersuchungen zur Populationskologie des dort eingebrgerten europischen Feldhasen(Lepus europaeus) durchgefhrt...

U. Dietrich

1985-01-01T23:59:59.000Z

332

application des methodes: Topics by E-print Network  

NLE Websites -- All DOE Office Websites (Extended Search)

et entreprises connaissent un fort dveloppement des normes socio-techniques : norme ISO 9001, norme ISO 14000 etc ...Ces normes sont issues de travaux de rflexion...

333

Temporre Arthrodese des Hftgelenkes mit Fixateur externe bei osteolytischer Beckenmetastase  

Science Journals Connector (OSTI)

Es wird ber einen Patienten mit ausgedehnter osteolytischer Beckenmetastasierung in die Region des linken Hftgelenkes bei primrem Nierenkarzinom berichtet. Eine einfach auszufhrende Fixateur-externe-Montage z...

OA Dr. W. Schz; S. Pfandl; B. Kirschsieper

1990-01-01T23:59:59.000Z

334

Die Vergemeinschaftung des Kollisionsrechts der auervertraglichen Schuldverhltnisse durch Rom II  

Science Journals Connector (OSTI)

Mit der am 11. Juli 2007 verabschiedeten, zum 11. Januar 2009 in Kraft tretenden sog "Rom II-Verordnung" werden weite Teile des bis...

Helmut Heiss; Leander D. Loacker

2007-10-01T23:59:59.000Z

335

Nanotubes de carbone monoparois dans des conditions extrmes de pression et de temprature.  

E-Print Network (OSTI)

??Au cours de cette thse des tudes principalement de spectroscopie Raman et de spectroscopie d'absorption des rayons X produits par rayonnement synchrotron ont t ralises (more)

Merlen, Alexandre

2005-01-01T23:59:59.000Z

336

E-Print Network 3.0 - association des physiologistes Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

des physiologistes Search Powered by Explorit Topic List Advanced Search Sample search results for: association des physiologistes Page: << < 1 2 3 4 5 > >> 1 Physiological systems...

337

E-Print Network 3.0 - arithmtiques des suites Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

arithmtiques des suites Search Powered by Explorit Topic List Advanced Search Sample search results for: arithmtiques des suites Page: << < 1 2 3 4 5 > >> 1 TORSEURS ARITHMTIQUES...

338

E-Print Network 3.0 - au comite des Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

Collection: Computer Technologies and Information Sciences 2 Le 16 juin 2011 Curriculum Vitae Summary: des professeurs des universites) a l'Universite de Toulouse III du...

339

E-Print Network 3.0 - agricole geothermie des Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

agricole geothermie des Search Powered by Explorit Topic List Advanced Search Sample search results for: agricole geothermie des Page: << < 1 2 3 4 5 > >> 1 CCOOLLEE...

340

E-Print Network 3.0 - application diagnostic des Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

Juin 2010 1 IMPLICATION DES ACTEURS LOCAUX DANS LA Summary: l'intrt conomique, social et environnemental de l'innovation. Pour ce faire des diagnostics sont... . La...

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


341

Ergebnisse von Untersuchungen zur Reproduktion des Mufflons(Ovis ammon musimon)  

Science Journals Connector (OSTI)

In vier Gebieten des ostdeutschen Raumes wurden Untersuchungen zur Reproduktion des Muffelwildes durchgefhrt. Die Arbeitsgrundlage bildeten Direktbeobachtungen in einer Gatteranlage sowie an einer teilgeprgt...

L. Briedermann

1992-03-01T23:59:59.000Z

342

E-Print Network 3.0 - auftrag des bundesministeriums Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

und Arbeit... gefrdert sowie weiters mit Mitteln des Bundesministeriums fr Verkehr, Innovation und Technologie, des... - Live-Prsentation vor der ... Source: Breu, Ruth -...

343

La gestion des risques industriels : l'exemple de l'le Mandji au Gabon.  

E-Print Network (OSTI)

??La dmonstration de la situation risque sur lle Mandji au Gabon lgitime lexistence des risques-sites , des risques-transports et (more)

Lila Miyagou, Gisle

2013-01-01T23:59:59.000Z

344

E-Print Network 3.0 - angulaire des particules Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

de fission... distributions de masse et de la distribution angulaire des fragments de fis- sion des noyaux lourds a t... - eurs expriences de la distribution ... Source:...

345

E-Print Network 3.0 - analyse des besoins Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

Summary: majeurs du besoin oprationneloprationnel Une volution vers l'emploi des technologies de l... scurit Explosion des besoins en volume de matriels ncessaires...

346

E-Print Network 3.0 - au voisinage des Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

proviennent de l'change des tables de voisinage entre voisins directs via des paquets hello... 'indice de proximit va ainsi valuer la similarit ... Source: Ecole...

347

La gestion des ports par une entit publique: aspects europens et environnementaux La gestion des ports par une entit publique  

E-Print Network (OSTI)

La gestion des ports par une entité publique: aspects européens et environnementaux « La gestion des ports par une entité publique: aspects européens et environnementaux » Thèse pour le Doctorat en,version1-25Apr2014 #12;La gestion des ports par une entité publique: aspects européens et environnementaux

Paris-Sud XI, Université de

348

ABSORPTION PHOTOLECTRIQUE DES RAYONS 03B3 DANS LA COUCHE L DES ATOMES Par Mme NADINE MARTY.  

E-Print Network (OSTI)

401. ABSORPTION PHOTO?LECTRIQUE DES RAYONS 03B3 DANS LA COUCHE L DES ATOMES Par Mme NADINE MARTY la suite, comme la section efficace totale d'absorption photoélectrique par atome. Les résultats de. Laboratoire dé Chimie nucléaire, Collège de France. Sommaire. - On rappelle la valeur des sections efficaces d'absorption

Boyer, Edmond

349

Testing Models of Intrinsic Brightness Variations in Type Ia Supernovae, and their Impact on Measuring Cosmological Parameters  

E-Print Network (OSTI)

For spectroscopically confirmed type Ia supernovae we evaluate models of intrinsic brightness variations with detailed data/Monte-Carlo comparisons of the dispersion in the following quantities: Hubble-diagram scatter, color difference (B-V-c) between the true B-V color and the fitted color (c) from the SALT-II light curve model, and photometric redshift residual. The data sample includes 251 ugriz light curves from the 3-season Sloan Digital Sky Survey-II, and 191 griz light curves from the Supernova Legacy Survey 3-year data release. We find that the simplest model of a wavelength independent (coherent) scatter is not adequate, and that to describe the data the intrinsic scatter model must have wavelength-dependent variations. We use Monte Carlo simulations to examine the standard approach of adding a coherent scatter term in quadrature to the distance-modulus uncertainty in order to bring the reduced chi2 to unity when fitting a Hubble diagram. If the light curve fits include model uncertainties with the c...

Kessler, Richard; Marriner, John; Betoule, Marc; Brinkmann, Jon; Cinabro, David; El-Hage, Patrick; Frieman, Joshua; Jha, Saurabh; Mosher, Jennifer; Schneider, Donald P

2012-01-01T23:59:59.000Z

350

Ouverture des portes : Plonge dans le Grand Bleu... Activits libres  

E-Print Network (OSTI)

Ouverture des portes : Plongée dans le Grand Bleu... Activités libres : · Présentations de nos ... Fermeture des portes 10h En Continu 17h 10h - 12h 14h - 15h 17h 15h - 17h Samedi 10 mai 2014 Portes ouvertes

351

Utilisation des Protocoles HARQ pour la Radio Cognitive  

E-Print Network (OSTI)

Utilisation des Protocoles HARQ pour la Radio Cognitive Romain Tajan encadré/01/2012 #12;Plan 1 Introduction 2 La Radio Cognitive Techniques de la Radio Cognitive Méthodes d'accès 3 performances du protocole IR-HARQ 4 Utilisation des protocoles HARQ pour la Radio Cognitive Utilisation de l

Dobigeon, Nicolas

352

Profils des entreprises en matire de RSE et innovation technologique  

E-Print Network (OSTI)

la nature de la relation entre la Responsabilité Sociale des Entreprises (RSE) et l'innovation : Innovation, PME, Responsabilité Sociale des Entreprises (RSE) Rachel BOCQUET - Caroline MOTHE hal-00950166 : Corporate Social Responsibility (CSR), Innovation, SME's hal-00950166,version1-25Feb2014 #12;3 Introduction

Boyer, Edmond

353

Etat des lieux en robotique marine et sous-marine  

E-Print Network (OSTI)

robots marins et applications ASV : Autonomous Surface Vehicle · Propulsion: moteur, vent, houle ROVEtat des lieux en robotique marine et sous-marine Cas particulier de la commande des mini-véhicules sous-marins Vincent Creuze (MCF), LIRMM, Montpellier Animateur axe robotique marine et sous-marine du

Paris-Sud XI, Université de

354

Explorer : des cls pour mieux comprendre la matire  

ScienceCinema (OSTI)

Le LHC va-t-il bouleverser les thories de l'infiniment petit ? Les physiciens aimeraient que l'acclrateur fasse trembler le modle standard. Cette thorie des particules lmentaires et des forces laisse de nombreuses zones d'ombre. Le LHC et ses expriences ont t conus pour les clairer.

None

2011-10-06T23:59:59.000Z

355

Dgradabilit compare dans le rumen des diffrentes fractions azotes des feuilles  

E-Print Network (OSTI)

bout de 1, 3, 6, 9, 15, 24 et 48 h. Après lavage et séchage à 60 °C, on a dosé dans le résidu l dégradation des fractions NDF et AFD du foin sont prati- quement identiques. Les cinétiques de dégradation de

Boyer, Edmond

356

Comptes Rendus des JNC 17 -Poitiers 2011 Un outil compltement automatis pour l'valuation en profondeur des  

E-Print Network (OSTI)

Fourier Rapide, Simulation numérique. Keywords: Composite material, Homogenization models, Artificial profondeur des performances des modèles d'homogénéisation A fully automated tool for a thorough evaluation of homogenization models performances Elias Ghossein1 et Martin Lévesque1 1 : CREPEC, Département de Génie Mécanique

Paris-Sud XI, Université de

357

LA REGULATION DU STATIONNEMENT ET DES CIRCULATIONS AUTOMOBILES EN VILLE : DES POLITIQUES SOUTERRAINES D'ATTRACTIVIT AU COTS  

E-Print Network (OSTI)

LA REGULATION DU STATIONNEMENT ET DES CIRCULATIONS AUTOMOBILES EN VILLE : DES POLITIQUES circulations automobiles en ville et sur les ambitions partagées de ces politiques urbaines. Alors qu de l'automobile, nous souhaitons aborder la manière dont ces politiques urbaines prennent en compte

Paris-Sud XI, Université de

358

Reseaux des groupes de Lie (Version preliminaire)  

E-Print Network (OSTI)

Cartan. - Exemples de r´eseaux. - M´elange. Th´eor`eme de Howe-Moore. - Comptage de points dans les r´eseaux. Th´eor`eme d'Eskin-McMullen. - Vari´et´e drapeau. Th´eor`eme de Furstenberg. - Repr´esentation des r´eseaux. Th´eor`eme de superrigidit´e de Margulis. - Corps locaux. Th´eor`eme d'arithm´eticit´e de Margulis

Wienhard, Anna

359

Utilisations thrapeutiques des interfaces cerveau-ordinateur  

E-Print Network (OSTI)

motrice (contrôle par la pensée d'une orthèse, d'une prothèse ou d'un robot). Il apparaît aujourd'hui que'aide à la rééducation motrice par un patient atteint d'une hémiplégie du coté droit. Index Terms supplémentaire vers l'extérieur, par le biais de l'activité cérébrale, pour : restaurer des fonctions motrices

Paris-Sud XI, Université de

360

Adresse des auteurs en 2013 : Annette Hladik  

E-Print Network (OSTI)

végétaux de la forêt dense. Résultat des tests préliminaires effectués au Gabon. La Terre et la Vie , 31 a porté sur 382 espèces de Phanérogames de la région :\\"ord-Est du Gabon, dont les feuilles ont été laboratoire de Primato- Jogic cl d'Ecologie Equatoriale de Makokou, au Gabon (C.N.R.S.), au cours d

Boyer, Edmond

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


361

FRAUDE A L'INFORMATION COMPTABLE ET FINANCIERE : LE ROLE DES AUTORITES DE  

E-Print Network (OSTI)

1 FRAUDE A L'INFORMATION COMPTABLE ET FINANCIERE : LE ROLE DES AUTORITES DE REGULATION Constant investisseurs à l'annonce des sanctions pour fraude à l'information financière prononcées par l'Autorité des, Gouvernance, Autorité des marchés financiers, Juges, Fraudes, Sanction. Correspondance : Constant Djama Maître

Paris-Sud XI, Université de

362

Vers une simulation raliste des tats de surface par calculs massivement  

E-Print Network (OSTI)

FARMAN 22/11/2012 #12;Contexte et objectifs Contexte : Simulation des topographies de surface / fonctions

363

GROUPES DE SYMETRIE EN PHYSIQUE (des hautes energies). Approfondissement PHY 575  

E-Print Network (OSTI)

´ematique et une partie physique. 1 #12;Plan des cours: ´EL´EMENTS DE TH´EORIE DES GROUPES POUR PHYSICIENSGROUPES DE SYM´ETRIE EN PHYSIQUE (des hautes ´energies). Approfondissement PHY 575 Denis Bernard et David Renard Le but de cet enseignement est de reprendre certains th`emes du cours de physique des

Renard, David

364

Ein Beitrag zur Messung des Lrms mit dem verbesserten Lrmzhler von Dold und Thiele  

Science Journals Connector (OSTI)

1. Es werden die Lrmschdigungen des menschlichen Ohres bei verschiedenen Schallstrken und bei zeitlich versch...

Heinrich Thiele; Kurt Holzberg

365

Peltier A., 2008, La cartographie rglementaire des risques naturels en Suisse, en Italie et en France , La mise en carte des risques naturels, Diversit des approches, Montpellier : Presses Universitaires de la Mditerrane,  

E-Print Network (OSTI)

Peltier A., 2008, « La cartographie réglementaire des risques naturels en Suisse, en Italie et en (2008) 61-67" #12;Peltier A., 2008, « La cartographie réglementaire des risques naturels en Suisse, en

Paris-Sud XI, Université de

366

RINNERVATION D'UN MUSCLE STRI PAR DES FIBRES PRGANGLIONNAIRES PARASYMPATHIQUES.  

E-Print Network (OSTI)

du lieu d'émer- gence du nerf récurrent, le diaphragme a été réinnervé par des fibres motrices des plaques motrices sur ce muscle ;J 3) ces plaques motrices sont fonctionnelles ; 4) l'activité des sur des fibres musculaires striées. L'activité électrique des unités motrices réinnervées peut être

Boyer, Edmond

367

La scurit et la dfense du territoire du Gabon. Analyse gopolitique.  

E-Print Network (OSTI)

??La scurit du territoire du Gabon s'organise autour des enjeux qui s'enracinent moins dans son statut ancien de "petit cendrillon d'Afrique centrale" que dans les (more)

Meye Ndong, Serges

2013-01-01T23:59:59.000Z

368

Les marchands orientaux et les langues occidentales au XVIIe sicle : l'exemple des Choffelins de Marseille  

E-Print Network (OSTI)

1 Les marchands orientaux et les langues occidentales au XVIIe siècle : l'exemple des « Choffelins » de Marseille La question des marchands et des langues à l'époque moderne est loin d'être un domaine la question des marchands et des langues dans le commerce de moyenne et longue distances. Le but de

Paris-Sud XI, Université de

369

Linarisation des amplificateurs de puissance par pr-distorsion avec prise en compte des effets mmoire  

E-Print Network (OSTI)

mémoire Geneviève BAUDOIN1, Pascale JARDIN1, Roman MARSALEK1,2 1ESYCOM - ESIEE - Laboratoire des Signaux effets de mémoire. Abstract ­ We present a baseband adaptive pre-distorion technique to linearize power-distortion system that is applied as a pre-distortion. The form of the pre-distorter is a polynomial with memory

Baudoin, Geneviève

370

Mathmatiques et interactions des mathmatiques Participation des lus C aux valutations de l'AERES  

E-Print Network (OSTI)

évalutations de l'AERES La section 41 du comité national, lors de sa première réunion du nouveau mandat, demande par cette motion aux présidents de comités d'AERES d'intégrer systématiquement dans les comités de, directeur de la section des unités à l'AERES. #12;

Pouyanne, Nicolas

371

Votre t petit prix !!! Depuis 60 ans au service des vacances familles et enfants, Vacances Pour Tous propose une autre ide des vacances !  

E-Print Network (OSTI)

4 Mai 2012 Votre été à petit prix !!! Depuis 60 ans au service des vacances familles et enfants, Vacances Pour Tous propose une autre idée des vacances ! Nos équipes vous proposent des vacances en villages vacances, locations, campings en France et à l'étranger mais aussi le plus grand choix de

Arleo, Angelo

372

The Des Plaines River -- Part One  

NLE Websites -- All DOE Office Websites (Extended Search)

One One Nature Bulletin No. 606 May 28, 1960 Forest Preserve District of Cook County Daniel Ryan, President Roberts Mann, Conservation Editor David H. Thompson, Senior Naturalist THE DES PLAINES RIVER -- PART ONE: DESCRIPTION Chicago was incorporated as a village in 1833 and in less than 100 years it had become one of the world's great cities. Four unique natural features have contributed to its phenomenal growth. The first is Lake Michigan. Chicago is strategically located at the south end of it, deep in the heart of the continent and the vast central lowland -- bread-basket of our nation. The lake provides an inexhaustible supply of fresh water and a highway for water-borne commerce. Since the completion of the St. Lawrence Seaway, Chicago has also become a port for ocean going ships.

373

Fermilab Today | Experiment Profiles Archive | DES & DECam  

NLE Websites -- All DOE Office Websites (Extended Search)

DES and DECam DES and DECam photo FACT SHEET: Click here to download PDF. NAME: The Dark Energy Survey, or DES, which uses the Dark Energy Camera, called DECam WHAT WILL THIS TELL US? Because gravity causes mass to attract other mass, over time, this gravitational pull should slow the universe's expansion. Instead, the universe is accelerating: Galaxies are speeding away from each other faster and faster. DES aims to help pin down the cause of this acceleration. Theorists offer two possibilities: Either three-quarters of the universe is dark energy, which causes a type of anti-gravity, or gravity itself behaves differently on cosmic scales than Einstein thought it did. The answer will determine the fate of the universe. If Einstein was correct, the expansion of the universe will continue to speed up, and in

374

Teilnehmer des deutsch-ukrainisch-polnischen Seminars in Tscherniwzi 2012  

E-Print Network (OSTI)

Teilnehmer des deutsch-ukrainisch-polnischen Seminars in Tscherniwzi 2012 BAYHOST & die Ukraine. Gefördert durch den DAAD veranstaltete BAYHOST zwei Deutsch - Ukrainische Seminare, die sich dem Thema

Schubart, Christoph

375

Die Theorie des Sterninnern und die Entwicklung der Sterne  

Science Journals Connector (OSTI)

ber den inneren Aufbau und die Entwicklung der Sterne sowie ber die Energiequellen der Sterne haben in den Ergebnissen der exakten Naturwissenschaften Vogt (77) und Freundlich (28) berichtet. Whrend des seit d...

Bengt Strmgren

1937-01-01T23:59:59.000Z

376

Zur Ethologie des Feldsperlings(Passer m. montanus L.)  

Science Journals Connector (OSTI)

Das Verhalten des Feldsperlings(Passer montanus) wurde vier Jahre lang in einer weitlufigen Siedlung am Motzener See bei Zossen an 16 bis 19 teilweise buntberingten Paaren untersucht. Zur Ergnzung der Freilandb...

Gisela Deckert

1962-10-01T23:59:59.000Z

377

eefnparticipants Academie Royale des Sciences de Su`ede  

E-Print Network (OSTI)

.grazzini@inria.fr Ph.D. student: image processing, meteorological and pollution models. AIR Project, INRIA Rocquencourt`ere. Jean Serra, ´Ecole des Mines. serra@cmm.ensmp.fr Professor, Member of the Organizing Committee, Invited

Kiselman, Christer

378

"Sauver la nuit" : empreinte lumineuse, urbanisme et gouvernance des territoires.  

E-Print Network (OSTI)

??Notre socit entretient une relation complexe avec la nuit, espace-temps souvent hors des cadences diurnes qui favorise la rflexion, limaginaire, la cration, lcoute et le (more)

Challat, Samuel

2010-01-01T23:59:59.000Z

379

RubRik Gebudeautomation RubRique automatisation des btiments  

E-Print Network (OSTI)

le contrôle joint du chauffage, de la ventilation et de l'air conditionné (systèmes HVAC). Aujourd compte de l'inertie thermique. Cet article propose une synthèse des standards et des nouvelles tendances. Réseaux de communication standards Depuis les années 1990, divers réseaux dédiés aux bâtiments, tels que

Boyer, Edmond

380

Einfhrungsveranstaltung des Instituts fr Chemie zum Wintersemester 2013/2014  

E-Print Network (OSTI)

Einführungsveranstaltung des Instituts für Chemie zum Wintersemester 2013/2014 Donnerstag, 10.10.2013 Albert-Einstein-Str. 3a, August Michaelis Hörsaal 09.00 Uhr Hörsaalgebäude Chemie, Albert Einstein-Str. 3a/ Hörsaal 101 Begrü?ung der Studenten des Bachelor-Studienganges Chemie und der Lehramtskandidaten

Wolkenhauer, Olaf

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


381

Einfhrungsveranstaltung des Instituts fr Chemie zum Wintersemester 2012/2013  

E-Print Network (OSTI)

Einführungsveranstaltung des Instituts für Chemie zum Wintersemester 2012/2013 Donnerstag, 11.10.2012 Albert-Einstein-Str. 3a, August Michaelis Hörsaal 09.00 Uhr Hörsaalgebäude Chemie, Albert Einstein-Str. 3a/ Hörsaal 101 Begrü?ung der Studenten des Bachelor-Studienganges Chemie und der Lehramtskandidaten

Wolkenhauer, Olaf

382

Des frontires du corps aux frontires de l'identit  

E-Print Network (OSTI)

incapacités motrices majeures Thèse soutenue le 21 octobre 2013 devant le jury composé de : David LE BRETON'une vie au quotidien avec des incapacités motrices majeures - 2013 tel-00904373,version1-14Nov2013 #12'EXPERIENCE D'UNE VIE AU QUOTIDIEN AVEC DES INCAPACITES MOTRICES MAJEURES Thèse de Doctorat Discipline

Paris-Sud XI, Université de

383

Inventaire des documents F.1 Documents d'archives  

E-Print Network (OSTI)

´epartements (1834­1839). F7 3842 - rapports g´en´eraux de surveillance de la police (an IV - 1827). F18 I - 146 - enregistrement des journaux non caution- n´es (no 4 et no 285). F18 1 `a 119 - d´eclarations de divers imprimeurs, entre 1817 et 1834, sur le tirage des journaux. F18 355­383 - d´eclarations de divers ´editeurs de jour

Kleinert, Hagen Michael

384

Commande des liaisons HVDC dans un contexte reseau  

E-Print Network (OSTI)

Commande des liaisons HVDC dans un contexte r´eseau Leyla Arioua , Bogdan Marinescu , Eric´esum´e : Maintes solutions ont ´et´e propos´ees afin de contr^oler les liaisons `a courant continu (HVDC Matlab ainsi qu'Eurostag pour des syst`emes de grande dimension. Mots-cl´es: HVDC, stabilit´e transitoire

Paris-Sud XI, Université de

385

THE EFFECT OF THE PRE-DETONATION STELLAR INTERNAL VELOCITY PROFILE ON THE NUCLEOSYNTHETIC YIELDS IN TYPE Ia SUPERNOVA  

SciTech Connect

A common model of the explosion mechanism of Type Ia supernovae is based on a delayed detonation of a white dwarf. A variety of models differ primarily in the method by which the deflagration leads to a detonation. A common feature of the models, however, is that all of them involve the propagation of the detonation through a white dwarf that is either expanding or contracting, where the stellar internal velocity profile depends on both time and space. In this work, we investigate the effects of the pre-detonation stellar internal velocity profile and the post-detonation velocity of expansion on the production of {alpha}-particle nuclei, including {sup 56}Ni, which are the primary nuclei produced by the detonation wave. We perform one-dimensional hydrodynamic simulations of the explosion phase of the white dwarf for center and off-center detonations with five different stellar velocity profiles at the onset of the detonation. In order to follow the complex flows and to calculate the nucleosynthetic yields, approximately 10,000 tracer particles were added to every simulation. We observe two distinct post-detonation expansion phases: rarefaction and bulk expansion. Almost all the burning to {sup 56}Ni occurs only in the rarefaction phase, and its expansion timescale is influenced by pre-existing flow structure in the star, in particular by the pre-detonation stellar velocity profile. We find that the mass fractions of the {alpha}-particle nuclei, including {sup 56}Ni, are tight functions of the empirical physical parameter {rho}{sub up}/v{sub down}, where {rho}{sub up} is the mass density immediately upstream of the detonation wave front and v{sub down} is the velocity of the flow immediately downstream of the detonation wave front. We also find that v{sub down} depends on the pre-detonation flow velocity. We conclude that the properties of the pre-existing flow, in particular the internal stellar velocity profile, influence the final isotopic composition of burned matter produced by the detonation.

Kim, Yeunjin; Jordan, G. C. IV; Graziani, Carlo; Lamb, D. Q.; Truran, J. W. [Astronomy Department, University of Chicago, Chicago, IL 60637 (United States); Meyer, B. S. [Physics and Astronomy Department, Clemson University, Clemson, SC 29634 (United States)

2013-07-01T23:59:59.000Z

386

Neutron Diffraction Residual Strain Tensor Measurements Within The Phase IA Weld Mock-up Plate P-5  

SciTech Connect

Oak Ridge National Laboratory (ORNL) has worked with NRC and EPRI to apply neutron and X-ray diffraction methods to characterize the residual stresses in a number of dissimilar metal weld mockups and samples. The design of the Phase IA specimens aimed to enable stress measurements by several methods and computational modeling of the weld residual stresses. The partial groove in the 304L stainless steel plate was filled with weld beads of Alloy 82. A summary of the weld conditions for each plate is provided in Table 1. The plates were constrained along the long edges during and after welding by bolts with spring-loaded washers attached to the 1-inch thick Al backing plate. The purpose was to avoid stress relief due to bending of the welded stainless steel plate. The neutron diffraction method was one of the methods selected by EPRI for non-destructive through thickness strain and stress measurement. Four different plates (P-3 to P-6) were studied by neutron diffraction strain mapping, representing four different welding conditions. Through thickness neutron diffraction strain mappings at NRSF2 for the four plates and associated strain-free d-zero specimens involved measurement along seven lines across the weld and at six to seven depths. The mountings of each plate for neutron diffraction measurements were such that the diffraction vector was parallel to each of the three primary orthogonal directions of the plate: two in-plane directions, longitudinal and transverse, and the direction normal to the plate (shown in left figure within Table 1). From the three orthogonal strains for each location, the residual stresses along the three plate directions were calculated. The principal axes of the strain and stress tensors, however, need not necessarily align with the plate coordinate system. To explore this, plate P-5 was selected for examination of the possibility that the principal axes of strain are not along the sample coordinate system axes. If adequate data could be collected the goal would be to determine the strain tensor's orientation and magnitude of strain along each principle axis direction.

Hubbard, Camden R [ORNL

2011-09-01T23:59:59.000Z

387

TESTING MODELS OF INTRINSIC BRIGHTNESS VARIATIONS IN TYPE Ia SUPERNOVAE AND THEIR IMPACT ON MEASURING COSMOLOGICAL PARAMETERS  

SciTech Connect

For spectroscopically confirmed Type Ia supernovae we evaluate models of intrinsic brightness variations with detailed data/Monte Carlo comparisons of the dispersion in the following quantities: Hubble-diagram scatter, color difference (B - V - c) between the true B - V color and the fitted color (c) from the SALT-II light curve model, and photometric redshift residual. The data sample includes 251 ugriz light curves from the three-season Sloan Digital Sky Survey-II and 191 griz light curves from the Supernova Legacy Survey 3 year data release. We find that the simplest model of a wavelength-independent (coherent) scatter is not adequate, and that to describe the data the intrinsic-scatter model must have wavelength-dependent variations resulting in a {approx}0.02 mag scatter in B - V - c. Relatively weak constraints are obtained on the nature of intrinsic scatter because a variety of different models can reasonably describe this photometric data sample. We use Monte Carlo simulations to examine the standard approach of adding a coherent-scatter term in quadrature to the distance-modulus uncertainty in order to bring the reduced {chi}{sup 2} to unity when fitting a Hubble diagram. If the light curve fits include model uncertainties with the correct wavelength dependence of the scatter, we find that this approach is valid and that the bias on the dark energy equation-of-state parameter w is much smaller ({approx}0.001) than current systematic uncertainties. However, incorrect model uncertainties can lead to a significant bias on the distance moduli, with up to {approx}0.05 mag redshift-dependent variation. This bias is roughly reduced in half after applying a Malmquist bias correction. For the recent SNLS3 cosmology results, we estimate that this effect introduces an additional systematic uncertainty on w of {approx}0.02, well below the total uncertainty. This uncertainty depends on the choice of viable scatter models and the choice of supernova (SN) samples, and thus this small w-uncertainty is not guaranteed in future cosmology results. For example, the w-uncertainty for SDSS+SNLS (dropping the nearby SNe) increases to {approx}0.04.

Kessler, Richard; Frieman, Joshua A. [Department of Astronomy and Astrophysics, University of Chicago, 5640 South Ellis Avenue, Chicago, IL 60637 (United States)] [Department of Astronomy and Astrophysics, University of Chicago, 5640 South Ellis Avenue, Chicago, IL 60637 (United States); Guy, Julien; Betoule, Marc; El-Hage, Patrick [Laboratoire de Physique Nucleaire et des Hautes Energies, UPMC Univ. Paris 6, UPD Univ. Paris 7, CNRS IN2P3, 4 place Jussieu, F-75005 Paris (France)] [Laboratoire de Physique Nucleaire et des Hautes Energies, UPMC Univ. Paris 6, UPD Univ. Paris 7, CNRS IN2P3, 4 place Jussieu, F-75005 Paris (France); Marriner, John [Center for Particle Astrophysics, Fermi National Accelerator Laboratory, P.O. Box 500, Batavia, IL 60510 (United States)] [Center for Particle Astrophysics, Fermi National Accelerator Laboratory, P.O. Box 500, Batavia, IL 60510 (United States); Brinkmann, Jon [Apache Point Observatory, P.O. Box 59, Sunspot, NM 88349 (United States)] [Apache Point Observatory, P.O. Box 59, Sunspot, NM 88349 (United States); Cinabro, David [Department of Physics, Wayne State University, Detroit, MI 48202 (United States)] [Department of Physics, Wayne State University, Detroit, MI 48202 (United States); Jha, Saurabh [Department of Physics and Astronomy, Rutgers University, 136 Frelinghuysen Road, Piscataway, NJ 08854 (United States)] [Department of Physics and Astronomy, Rutgers University, 136 Frelinghuysen Road, Piscataway, NJ 08854 (United States); Mosher, Jennifer [Department of Physics and Astronomy, University of Pennsylvania, 203 South 33rd Street, Philadelphia, PA 19104 (United States)] [Department of Physics and Astronomy, University of Pennsylvania, 203 South 33rd Street, Philadelphia, PA 19104 (United States); Schneider, Donald P., E-mail: kessler@kicp.uchicago.edu [Department of Astronomy and Astrophysics, The Pennsylvania State University, University Park, PA 16802 (United States)

2013-02-10T23:59:59.000Z

388

Gorchakova-IA  

NLE Websites -- All DOE Office Websites (Extended Search)

Mokhov Oboukhov Institute of Atmospheric Physics Russian Academy of Sciences Moscow, Russia T. B. Zhuravleva Institute of Atmospheric Optics Tomsk, Russia Introduction Study of...

389

Variations ia Variscan Granites  

Science Journals Connector (OSTI)

... the compositional variations within the Caledonian belt, may both be attributed to variations in the geothermal gradient. In Nature Physical Science this week (April 2), he takes these studies ... studies a stage further by showing that the correlation within the belt between composition and geothermal gradient also applies to the Variscan granites.

1973-04-06T23:59:59.000Z

390

IA News Archive  

Office of Environmental Management (EM)

field-type-text-with-summary field-label-hidden">

U.S. Secretary of Energy Ernest Moniz traveled...

391

Les incidents lis la protection juridique des investissements trangers en Chine : effectivit des voies de recours.  

E-Print Network (OSTI)

??Ce travail de recherche a pour objectif d'apporter un clairage et une comprhension sur l'volution du droit des affaires en Chine et plus particulirement sur (more)

Davant, Jrme

2010-01-01T23:59:59.000Z

392

Analyse des statistiques imparfaites. Evolution dmographique des pays francophones d'Afrique centrale (Cameroun, Congo, Gabon, Rpublique centrafricaine, Tchad).  

E-Print Network (OSTI)

??L'objet de ce travail est l'application de la dmarche de l'analyse dmographique sur des statistiques provenant de cinq pays francophones d'Afrique centrale (Cameroun, Congo, Gabon, (more)

Makoundou, Esa

2008-01-01T23:59:59.000Z

393

PROPAGATION DES ONDES LASTIQUES DE SURFACE Atlas des configurations calcules pour le quartz, le tantalate de lithium,  

E-Print Network (OSTI)

, le tantalate de lithium, le niobate de lithium et le vanado-sulfure de thallium en ce qui concerne'ensemble des configurations possibles des matériaux classiques (quartz, niobate de lithium et tantalate de lithium) ainsi que d'un matériau récemment signalé le vanado-sulfure de thallium (Tl3VS4). La propagation

Paris-Sud XI, Université de

394

Le bassin du Congo possde une fort tropicale humi-de des plus prcieuses et des plus menaces hors du  

E-Print Network (OSTI)

CONTEXTE Le bassin du Congo possède une forêt tropicale humi- de des plus précieuses et des plus l'environnement et l'exploitation forestière dans l'Ouest du bassin du Congo, plus préci- sément au Cameroun et dans la République du Congo. Cette nouvelle recherche montrera comment durant la période d

Hardin, Rebecca D.

395

Hommes et milieux : volution, interactions Participation des elus C aux comits de visite des units par l'AERES  

E-Print Network (OSTI)

de visite des unités par l'AERES La section 31 du comité national, lors de la session d'automne 2012, demande par cette motion à la direction de l'AERES d'intégrer systématiquement dans les comités de visite que leur opinion puisse s'exprimer et être prise en compte au cours de l'évaluation des unités par l'AERES

van Tiggelen, Bart

396

Etude des collisions d'ions lourds au LHC avec le spectromtre muons du dtecteur ALICE.  

E-Print Network (OSTI)

??Le spectromtre muons du dtecteur ALICE, install au LHC, est ddi la mesure des quarkonia (J/psi et upsilon) et des saveurs lourdes ouvertes (more)

Barret-Ramillien, V.

2012-01-01T23:59:59.000Z

397

Competition between $\\beta$-delayed proton and $\\beta$-delayed $\\gamma$ decay of the exotic $T_z$ = -2 nucleus $^{56}$Zn and fragmentation of the IAS  

E-Print Network (OSTI)

A very exotic decay mode at the proton drip-line, $\\beta$-delayed $\\gamma$-proton decay, has been observed in the $\\beta$ decay of the $T_z$ = -2 nucleus $^{56}$Zn. Three $\\gamma$-proton sequences have been observed following the $\\beta$ decay. The fragmentation of the IAS in $^{56}$Cu has also been observed for the first time. The results were reported in a recent publication. At the time of publication the authors were puzzled by the competition between proton and $\\gamma$ decays from the main component of the IAS. Here we outline a possible explanation based on the nuclear structure properties of the three nuclei involved, namely $^{56}$Zn, $^{56}$Cu and $^{55}$Ni, close to the doubly magic nucleus $^{56}$Ni. From the fragmentation of the Fermi strength and the excitation energy of the two populated 0$^{+}$ states we could deduce the off-diagonal matrix element of the charge-dependent part of the Hamiltonian responsible for the mixing. These results are compared with the decay of $^{55}$Cu with one proton ...

Rubio, B; Fujita, Y; Blank, B; Gelletly, W; Agramunt, J; Algora, A; Ascher, P; Bilgier, B; Cceres, L; Cakirli, R B; Fujita, H; Ganioglu, E; Gerbaux, M; Giovinazzo, J; Grvy, S; Kamalou, O; Kozer, H C; Kucuk, L; Kurtukian-Nieto, T; Molina, F; Popescu, L; Rogers, A M; Susoy, G; Stodel, C; Suzuki, T; Tamii, A; Thomas, J C

2015-01-01T23:59:59.000Z

398

Expectations for the Hard X-ray Continuum and Gamma-ray Line Fluxes from the Type Ia supernova SN 2014J in M82  

E-Print Network (OSTI)

The hard X-ray continuum and gamma-ray lines from a Type Ia supernova dominate its integrated photon emissions and can provide unique diagnostics of the mass of the ejecta, the $^{56}$Ni yield and spatial distribution, its kinetic energy and expansion speed, and the mechanism of explosion. Such signatures and their time behavior "X-ray" the bulk debris field in direct fashion, and do not depend upon the oftimes problematic and elaborate UV, optical, and near-infrared spectroscopy and radiative transfer that have informed the study of these events for decades. However, to date no hard photons have ever been detected from a Type Ia supernova in explosion. With the advent of the supernova SN 2014J in M82, at a distance of $\\sim$3.5 Mpc, this situation may soon change. Both NuSTAR and INTEGRAL have the potential to detect SN 2014J, and, if spectra and light curves can be measured, would usefully constrain the various explosion models published during the last $\\sim$thirty years. In support of these observational ...

The, Lih-Sin

2014-01-01T23:59:59.000Z

399

Effets des fibres et des matires grasses protges sur la composition du lait de chvre  

E-Print Network (OSTI)

%) et les MG (3 %). Les 4 rations ont été formulées de manière à être iso-azotées et à couvrir les besoins UFL et PDI des chèvres. Les rations T et F étaient iso-énergétiques (0,9 UFL/kg MS) et se présenté un effet significatif sur le TP : +1 g/kg par rapport à la ration T. L'utilisation pour le

Paris-Sud XI, Université de

400

17' Anne (Tome XXVIl). Septembre;.Octobre 1947 REVUE GNRALE DES QUESTIONS LAITIRES  

E-Print Network (OSTI)

'ac- .i.ion' des ferments lactiques thermôphiles, un~ rétraction (synérèse) 'QU caillé à l'intérieur des

Boyer, Edmond

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


401

Accelerated Publications Three-Dimensional Structure of DesVI from Streptomyces Venezuelae: A Sugar  

E-Print Network (OSTI)

Accelerated Publications Three-Dimensional Structure of DesVI from Streptomyces Venezuelae: A Sugar for the biosynthesis of dTDP-desosamine in Streptomyces Venezuelae, with the last step catalyzed by DesVI, an N

Holden, Hazel

402

Molecular architecture of DesV from Streptomyces venezuelae: A PLP-dependent transaminase involved in  

E-Print Network (OSTI)

Molecular architecture of DesV from Streptomyces venezuelae: A PLP-dependent transaminase involved are required for its biosynthesis in Streptomyces venezuelae. The focus of this article is DesV, which

Holden, Hazel

403

E-Print Network 3.0 - analyse quantitative des Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

de Lyon 1A -Approfondissement Summary: Dellandra - 2008-2009 TD 1 - Introduction Matlab et codage des donnes en vue de leur analyse L... raliser un codage des donnes,...

404

Energetische und kologische Bilanzierung des Einsatzes eines Elektro-Omnibusses auf Rgen  

Science Journals Connector (OSTI)

Der erste Teil dieses Aufsatzes beschreibt die Einsatzbedingungen fr einen Elektro-Omnibus und stellt Meergebnisse des Verbrauches im Liniendienstes vor, die im Rahmen des BMBF-Projektes auf zur Erprobung vo...

Dr.-Ing. Hermann Birnbreier

1998-07-01T23:59:59.000Z

405

E-Print Network 3.0 - animals utilisation des Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

est l'utilisation de l... des groupes d'individus" , l'utilisation rgulire des TIC ne doit pas se limiter l'apport de... haut niveau" : l'lve utilise son savoir...

406

E-Print Network 3.0 - apport des nouvelles Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

les enseignements... 'animation des groupes d'individus" , l'utilisation rgulire des TIC ne doit pas se limiter l'apport de... les apports ncessaire l'volution ......

407

E-Print Network 3.0 - analyse multidimensionnelle des Sample...  

NLE Websites -- All DOE Office Websites (Extended Search)

1975,page C5-95 FACTEUR GYROMAGNTIQUE DE L'TAT 12' Summary: priode du niveau 12+ des iso- topes de masse A 198, 196, 194. Une analyse multidimensionnelle des......

408

L'arrive des premiers mtallurgistes sur l'Ogoou, Gabon  

Science Journals Connector (OSTI)

Au Gabonca 24002300 BP, les dernires cultures nolithiques des savanes de la moyenne valle de l'Ogoou, succombent face une rapide expansion de populations porteuses de fer. Cet vnement, identifi sur des ...

Richard Oslisly; Bernard Peyrot

1992-01-01T23:59:59.000Z

409

Nano-antennes optiques pour l'inspection des structures photoniques.  

E-Print Network (OSTI)

??L'objectif de cette thse est de concevoir et laborer des outils innovants, baptiss nano-antennes (NAs), pour sonder le champ lectromagntique optique au voisinage des structures (more)

Abdoulkader Ibrahim, Idriss

2010-01-01T23:59:59.000Z

410

MICRO-CAPTEURS POUR LA GESTION DURABLE DE LA QUALITE DES EAUX Namour Philippe1 *  

E-Print Network (OSTI)

1 MICRO-CAPTEURS POUR LA GESTION DURABLE DE LA QUALITE DES EAUX Namour Philippe1 * , Khadro Basma 2 besoins tant réglementaires (DCE, LEMA) que cognitifs, (exploration du fonctionnement des hydro

Boyer, Edmond

411

UNIVERSITE DU QUEBEC AMONTREAL L'ECOLE NATIONALE SUPERIEURE DES MINES DE ST-ETIENNE  

E-Print Network (OSTI)

UNIVERSITE DU QUEBEC AMONTREAL ET L'ECOLE NATIONALE SUPERIEURE DES MINES DE ST-ETIENNE APPROCHE GLAUS JUILLET 2007 tel-00777775,version1-18Jan2013 #12;UNIVERSITE DU QUEBEC AMONTREAL Service des Reglement no 8 des etudes de cycles superieurs, [I'auteur] concede a l'Unlverslte du Quebec a Montreal une

Paris-Sud XI, Université de

412

RELATIVISTIC SHOCK BREAKOUTS-A VARIETY OF GAMMA-RAY FLARES: FROM LOW-LUMINOSITY GAMMA-RAY BURSTS TO TYPE Ia SUPERNOVAE  

SciTech Connect

The light from a shock breakout of stellar explosions, which carries a wealth of information, strongly depends on the shock velocity at the time of the breakout. The emission from Newtonian breakouts, typical in regular core-collapse supernovae (SNe), has been explored extensively. However, a large variety of explosions result in mildly or ultrarelativistic breakouts, where the observed signature is unknown. Here we calculate the luminosity and spectrum produced by relativistic breakouts. In order to do so, we improve the analytic description of relativistic radiation-mediated shocks and follow the system from the breakout itself, through the planar phase and into the spherical phase. We limit our calculation to cases where the post-breakout acceleration of the gas ends during the planar phase (i.e., the final gas Lorentz factor {approx}< 30). We find that spherical relativistic breakouts produce a flash of gamma rays with energy, E{sub bo}, temperature, T{sub bo}, and duration, t{sup obs} b{sub o}, that provide the breakout radius ( Almost-Equal-To 5 R{sub Sun }(t{sup obs}{sub bo}/10 s)(T{sub bo}/50 keV){sup 2}) and the Lorentz factor ( Almost-Equal-To T{sub bo}/50 keV). They also always satisfy a relativistic breakout relation (t{sup obs}{sub bo}/20 s) {approx} (E{sub bo}/10{sup 46} erg){sup 1/2}(T{sub bo}/50 keV){sup -2.68}. The breakout flare is typically followed, on longer timescales, by X-rays that carry a comparable energy. We apply our model to a variety of explosions, including Type Ia and .Ia SNe, accretion-induced collapse, energetic SNe, and gamma-ray bursts (GRBs). We find that all these events produce detectable gamma-ray signals, some of which may have already been seen. Some particular examples are: (1) relativistic shock breakouts provide a natural explanation to the energy, temperature, and timescales of low-luminosity GRBs. Indeed, all observed low-luminosity GRBs satisfy the relativistic breakout relation. (2) Nearby broad-line Type Ib/c (like SN 2002ap) may produce a detectable {gamma}-ray signal. (3) Galactic Type Ia SNe may produce detectable {gamma}-ray flares. We conclude that relativistic shock breakouts provide a generic process for the production of gamma-ray flares.

Nakar, Ehud [Raymond and Beverly Sackler School of Physics and Astronomy, Tel Aviv University, Tel Aviv 69978 (Israel); Sari, Re'em [Racah Institute for Physics, Hebrew University, Jerusalem 91904 (Israel)

2012-03-10T23:59:59.000Z

413

Forum des Jeuns du Gabon | Open Energy Information  

Open Energy Info (EERE)

des Jeuns du Gabon des Jeuns du Gabon Jump to: navigation, search Name Forum des Jeuns du Gabon Address Libreville-GABON, derrirère la Cité Damas Place Gabon Coordinates 0.390841°, 9.453644° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":0.390841,"lon":9.453644,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

414

Des Plaines, Illinois: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Des Plaines, Illinois: Energy Resources Des Plaines, Illinois: Energy Resources (Redirected from Des Plaines, IL) Jump to: navigation, search Equivalent URI DBpedia Coordinates 42.0333623°, -87.8833991° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":42.0333623,"lon":-87.8833991,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

415

Essai de modlisation du progrs technique endogne Quels enseignements sur l'apport futur des TIC la croissance conomique ?  

E-Print Network (OSTI)

Essai de modélisation du progrès technique endogène Quels enseignements sur l'apport futur des TIC enseignements sur l'apport futur des TIC à la croissance économique ? Introduction La diffusion des produits tic vigoureux dans l'industrie des produits tic ? Il est tentant de retrouver les faits largement admis et

Boyer, Edmond

416

Solar Wind: Manifestations of Solar Activity E N CYC LO PE D IA O F AS T R O N O MY AN D AS T R O PHYS I C S Solar Wind: Manifestations of Solar  

E-Print Network (OSTI)

Solar Wind: Manifestations of Solar Activity E N CYC LO PE D IA O F AS T R O N O MY AN D AS T R O PHYS I C S Solar Wind: Manifestations of Solar Activity The Sun's outer atmosphere, the corona, is continually heated and expands to create the solar wind. Solar activity waxes and wanes with the 11 yr cycle

Webb, David F.

417

Projected rotational velocities of WD1614+136 and WD1353+409 - implications for the rate of galactic Type Ia supernovae  

E-Print Network (OSTI)

The white dwarf stars WD1614+136 and WD1353+409 are not sufficiently massive to have formed through single star evolution. However, observations to date have not yet found any evidence for binarity. It has therefore been suggested that these stars are the result of a merger. In this paper we place an upper limit of approximately 50kms on the projected rotational velocities of both stars. This suggests that, if these stars are the results of a merger, efficient angular momentum loss with accompanying mass loss must have occurred. If the same process occurs following the merging of more massive white dwarf stars, the predicted rate of Type Ia supernovae due to merging white dwarfs may have been greatly over-estimated. Further observations to determine binarity in WD1614+136 and WD1353+409 are therefore encouraged.

P. F. L. Maxted; T. R. Marsh

1998-03-17T23:59:59.000Z

418

Chandra Observation of the Cluster of Galaxies MS 0839.9+2938 at z=0.194: the Central Excess Iron and SN Ia Enrichment  

E-Print Network (OSTI)

We present the Chandra study of the intermediately distant cluster of galaxies MS 0839.9+2938. By performing both the projected and deprojected spectral analyses, we find that the gas temperature is approximately constant at about 4 keV in 130-444h_70^-1 kpc. In the inner regions, the gas temperature descends towards the center, reaching sun yr^-1 and 96-126 M_sun yr^-1, respectively within 74h_70^-1 kpc where the gas is significantly colder. Along with the temperature drop, we detect a significant inward iron abundance increase from about 0.4 solar in the outer regions to about 1 solar within the central 37h_70^-1 kpc. Thus MS 0839.9+2938 is the cluster showing the most significant central iron excess at z>~ 0.2. We argue that most of the excess iron should have been contributed by SNe Ia. By utilizing the observed SN Ia rate and stellar mass loss rate, we estimate that the time needed to enrich the central region with excess iron is 6.4-7.9 Gyr, which is similar to those found for the nearby clusters. Coinciding with the optical extension of the cD galaxy (up to about 30h_70^-1 kpc), the observed X-ray surface brightness profile exhibits an excess beyond the distribution expected by either the beta model or the NFW model, and can be well fitted with an empirical two-beta model that leads to a relatively flatter mass profile in the innermost region.

Yu Wang; Haiguang Xu; Zhongli Zhang; Yueheng Xu; Xiang-Ping Wu; Sui-Jian Xue; Zongwei Li

2005-06-12T23:59:59.000Z

419

Etude des interactions entre services des cosystmes Rives, F.; Antona, M.; Aubert, S.;Carrire, S.;Ichaou, A.; Montagne, P; Peltier R.; Sibelet, N.  

E-Print Network (OSTI)

.;Ichaou, A.; Montagne, P; Peltier R.; Sibelet, N. ISDA 2010, Montpellier, June 28-30, 2010 1 ETUDE DES , Aboubacar ICHAOU5 , Pierre MONTAGNE6 , Régis PELTIER7 , Nicole SIBELET8 1 Unité de recherche Gestion des services des écosystèmes Rives, F.; Antona, M.; Aubert, S.;Carrière, S.;Ichaou, A.; Montagne, P; Peltier R

Paris-Sud XI, Université de

420

Modlisation des machines asynchones et synchrones aimants avec prise en compte des harmoniques d'espace et de temps : application la propulsion marine par POD.  

E-Print Network (OSTI)

??Ce travail porte sur la modlisation et le dimensionnement des moteurs aimants permanents et asynchrones destins la propulsion marine par POD. Un tat (more)

Lateb, Rambane

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421

Modlisation des machines asynchrones et synchrones a aimants avec prise en compte des harmoniques d'espace et de temps : application la propulsion marine par POD.  

E-Print Network (OSTI)

??Ce travail porte sur la modlisation et le dimensionnement des moteurs aimants permanents et asynchrones destins la propulsion marine par POD. Un tat (more)

Lateb, Ramdane

2006-01-01T23:59:59.000Z

422

PERTES CARACTRISTIQUES DES LECTRONS DANS TlCl, TlBr, Tl I ET CALCUL DES FONCTIONS OPTIQUES ENTRE 3 ET 25 eV  

E-Print Network (OSTI)

diffèrent des halogé- nures alcalins notamment par leur grande constante diélectrique optique et par un

Paris-Sud XI, Université de

423

Apport des aluminates de calcium vis--vis de la rsistance l'eau des sulfates de calcium hydrats.  

E-Print Network (OSTI)

??Les sulfates de calcium sont des matriaux conomiques et cologiques. Pourtant leur utilisation dans le domaine de la construction est assez limite du fait de (more)

Nguyen, Tien Dung

424

L'expertise en conduite automobile peut-elle moduler le phnomne d'extension des limites ?  

E-Print Network (OSTI)

L'expertise en conduite automobile peut-elle moduler le phénomène d'extension des limites'observateur vis-à-vis de la scène perçue, est sensible aux connaissances expertes. Des conducteurs automobiles automobile peut-elle moduler le phénomène d'extension des limites ? L'un des aspects les plus intrigants des

Jeanjean, Louis

425

Consommer des produits alimentaires locaux : comment et pourquoi ?1  

E-Print Network (OSTI)

redécouverte des saveurs, la volonté de consommer responsable et la recherche de lien social. L'analyse s, produit local, circuits courts, marketing agroalimentaire, lien producteur-consommateur. Local food: how for sustainable consumption and the search for social relationships. The analysis is based on a qualitative study

Paris-Sud XI, Université de

426

LES DETERMINANTS DES DISCOURS MANAGERIAUX : APPLICATION AUX CAS  

E-Print Network (OSTI)

-techniques : norme ISO 9001, norme ISO 14000 etc ...Ces normes sont issues de travaux de réflexion réalisés certaines, entre autres la norme ISO 9001, des responsables qualité ayant une autre formation d'origine. Ceci s'explique par le fait que la norme ISO 9001 organise la circulation documentaire au sein de l

Paris-Sud XI, Université de

427

Bestimmung des ep{Wirkungsquerschnittes von Beauty-Quarks  

E-Print Network (OSTI)

Bestimmung des ep{Wirkungsquerschnittes von Beauty-Quarks durch ihren semileptonischen Zerfall in Myonen mit dem H1-Detektor bei HERA Determination of the ep Cross Section for Beauty Quarks via werden die sichtbaren ep-Wirkungsquerschnitte fur schwere Quarks in dem kinematischen Bereich Q2

428

DIFFUSION INELASTIQUE DES AIEUTRONS ET ONDES DE SPIN  

E-Print Network (OSTI)

measured in the three principal symmetry directions by neutron inelastic scattering.The spin wave of neutrons C(Eogo)scattered by a spin wave of energy Eo and wave vector qo satisfies the following diffusion inklastiquedes neutrons. On a trouvB que les relations de dispersion des ondes de spin

Boyer, Edmond

429

Asymptotique des nombres de Betti, invariants l2 et laminations  

E-Print Network (OSTI)

Asymptotique des nombres de Betti, invariants l2 et laminations simplicial complex. We are interested in the asymp- totic behavior of the Betti numbers of a sequence that for regular coverings, these sequences of numbers converge to the l2 Betti numbers of the associated (in

Gaboriau, Damien

430

Asymptotique des nombres de Betti, invariants l et laminations  

E-Print Network (OSTI)

Asymptotique des nombres de Betti, invariants l 2 et laminations N. Bergeron et D. Gaboriau of the Betti numbers of a sequence of #12;nite sheeted covers of K, when normalized by the index of the covers Betti numbers of the associated (in general in#12;nite) limit regular cover of K. In this article we

Gaboriau, Damien

431

ATLAS-Experiment Abbildung 50: Aufbau des ATLAS Detektors.  

E-Print Network (OSTI)

ATLAS-Experiment Abbildung 50: Aufbau des ATLAS Detektors. 98 #12;ATLAS-Experiment ATLAS, LHC, zu unterst¨utzen. Die DESY Gruppe wurde formal im Juli 2006 in die ATLAS Kollaboration aufgenom Beteiligung an ATLAS erfolgt in enger Koope- ration mit einer Gruppe der Humboldt Universit¨at zu Berlin und

432

Titel des Moduls : Geruschbekmpfung/ Noise and Vibration Control  

E-Print Network (OSTI)

Titel des Moduls : Geräuschbekämpfung/ Noise and Vibration Control LP (nach ECTS): 6 Interne Kurzbe) Pflicht(P) / Wahl(W) Wahlpflicht(WP) Semester (WiSe/SoSe) Noise & Vibration Control VL 2 3 WP Wi. Springer-Verlag Berlin. ISBN 3-540-54473-9. 2. L.L. Beranek (ed.), 1971. Noise and Vibration Control. Mc

Berlin,Technische Universität

433

Centre Europen de Recherche et d'Enseignement des  

E-Print Network (OSTI)

informations diffusées par l'Isotope Geology Laboratory de Boise (Idaho, USA) et par le Lamont-Doherty Earth informations sur des éléments couramment analysés avec la technique TIMS : strontium, néodyme, plomb, uranium

Paris-Sud XI, Université de

434

Comptes Rendus des JNC 17 -Poitiers 2011 OSIRHYS IV Qualification des codes pour la prdiction du comportement  

E-Print Network (OSTI)

comportements. Abstract The hydrogen storage stays a key issue for the high scale deployment of fuel cell locaux. Les résultats montrent que l'analyse en statique linéaire utilisant des modèles 3D et nowadays. But it is necessary to reach a significant cost reduction of these storage systems

Paris-Sud XI, Université de

435

Travail, stress et sant : des modles thoriques un mta-modle Recension critique des modles thoriques reliant environnement  

E-Print Network (OSTI)

être stressée au travail (Milczarek, Schneider, & González, 2009).Toujours en 2005, 56 % des travailleurs européens estimaient que leur santé était affectée par leur activité professionnelle (Milczarek

Paris-Sud XI, Université de

436

Espaces Socits et Territoires Participation des lus C aux comits de visite des laboratoires par l'AERES  

E-Print Network (OSTI)

des laboratoires par l'AERES La section 39 du comité national, lors de sa première réunion du nouveau dans chaque comité de visite AERES un membre élu C de la section compétente du comité national. Les

van Tiggelen, Bart

437

conomie et Gestion Participation des lus C aux comits de visite des laboratoires par l'AERES  

E-Print Network (OSTI)

laboratoires par l'AERES La section 37 du comité national demande par cette motion à la direction de l'AERES d-Benoît Zimmermann Destinataires : Pierre GLAUDES, Directeur de la section des unités de recherche AERES Alain

van Tiggelen, Bart

438

et les mtadonnes CMIP5 Sieste Globc -Marie-Pierre Moine -2 dcembre 2010  

E-Print Network (OSTI)

METAFOR et CMIP5 #12; Projet européen (EU-FP7) Initiative du European Network for Earth System Modelling (NOAA/NCAR/GFDL) CERA2 (MPI) BFG (Univ. Of Manchester) ESMF (Earth System Modeling Framework, NASA

439

Programme des 3mes Rencontres de l'ESS en Vaucluse le 18 octobre 2012 08h30 Accueil et visite des stands AT 04  

E-Print Network (OSTI)

Programme des 3èmes Rencontres de l'ESS en Vaucluse le 18 octobre 2012 du film sur l'ESS en Vaucluse dans l'amphithéâtre 09h00 Amphithéâtre AT 04 Lancement des 3èmes rencontres de l'ESS en présence de

Naud Frédéric

440

LISTE DES MEMBRES DU CONSEIL DES ETUDES ET DE LA VIE UNIVERSITAIRE Collge ou catgorie Secteur Statut Nom Prnom Fonction Affectation  

E-Print Network (OSTI)

langues, sciences humaines et sociales Titulaire FRANCALANZA Eric Professeurs des Universités UFR Lettres et Sciences Humaines Art, littérature et langues, sciences humaines et sociales Titulaire AGOSTO Marie-Christine Professeurs des Universités UFR Lettres et Sciences Humaines Droit, économie, gestion

Brest, Université de

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to obtain the most current and comprehensive results.


441

Nano-antennes optiques pour l'exaltation et le contrle de la fluorescence molculaire dans des volumes sub-longueur d'onde.  

E-Print Network (OSTI)

??Les nano-antennes optiques permettent la manipulation, le confinement et l'exaltation des champs lectromagntiques dans des volumes sub-longueur d'onde. Les applications de ces nano-objets concernent des (more)

Aouani, Heykel

2011-01-01T23:59:59.000Z

442

Approche compare du dveloppement des villes-ports l'chelle mondiale : problmes conceptuels et mthodologiques  

E-Print Network (OSTI)

1 Approche comparée du développement des villes-ports à l'échelle mondiale : problèmes conceptuels comparaison internationale des villes-ports se justifie par la similitude croissante des phénomènes spatiaux mécanismes que connaissent les villes-ports dans leur individualité et au sein de leur espace national, ce

Paris-Sud XI, Université de

443

presentee pour obtenir le grade de Docteur de l'Ecole Nationale Superieure Des Telecommunications  

E-Print Network (OSTI)

Th`ese pr´esent´ee pour obtenir le grade de Docteur de l'Ecole Nationale Sup´erieure Des T´el´ecommunications Institut National des T´el´ecommunications (INT) Evry - France #12;Dissertation presented in partial fulfillment of the requirements for the degree of DOCTOR OF PHILOSOPHY of Ecole Nationale Sup´erieure Des T´el´ecommunications

Paris-Sud XI, Université de

444

CONTAGION DES CRISES DE 1997 ET 2008 EN ASEAN+3: UN MODELE VAR STRUCTUREL  

E-Print Network (OSTI)

i CONTAGION DES CRISES DE 1997 ET 2008 EN ASEAN+3: UN MODELE VAR STRUCTUREL Marine Coupaud LAREFI possibilités d'analyses afin d'étudier l'impact de chocs monétaires et réels sur les pays de l'Asean. Cette étude vise à analyser les réactions des pays membres de l'Asean+3 face à des perturbations de grande

Paris-Sud XI, Université de

445

XVIme Confrence Internationale de Management Stratgique TIC et volution des mcanismes de coordination dans les  

E-Print Network (OSTI)

XVIème Conférence Internationale de Management Stratégique TIC et évolution des mécanismes de Communication (TIC) permettent de réduire le coût de la coordination et d'en faciliter considérablement la réalisation. Pour autant, la vision des TIC comme supports des mécanismes de coordination repose sur un cadre

Boyer, Edmond

446

Former aux comptences TIC et aux comptences informationnelles : des objectifs intimement lis en formation  

E-Print Network (OSTI)

Former aux compétences TIC et aux compétences informationnelles : des objectifs intimement liés en.dumouchel@umontreal.ca Université de Montréal Résumé: Pour mieux comprendre la forte relation qui existe entre les compétences TIC enchaînons avec une vue d'ensemble des études empiriques sur le niveau des compétences TIC et

Paris-Sud XI, Université de

447

Surcharge informationnelle, urgence et TIC. L'effet temporel des technologies de l'information.  

E-Print Network (OSTI)

Surcharge informationnelle, urgence et TIC. L'effet temporel des technologies de l contribution des TIC au développement du sentiment d'urgence dans les entreprises et à son lien avec les informationnelle n'est pas nouvelle en soi, sa dimension temporelle a été peu étudiée. La généralisation des TIC

Paris-Sud XI, Université de

448

Intgration d'outils scientifiques et techniques dans un processus de conception : modlisation des facteurs  

E-Print Network (OSTI)

objectif la caractérisation des activités motrices des acteurs concernés : les personnes en situation de handicap. Notre ambition est de caractériser et de modéliser les spécificités motrices de ces futurs motrices. Dans cet article, nous proposons une adaptation du processus de conception UCD en y intégrant des

Paris-Sud XI, Université de

449

Proprits des fibres musculaires squelettiques. 1. Influence de l'innervation motrice  

E-Print Network (OSTI)

Propriétés des fibres musculaires squelettiques. 1. Influence de l'innervation motrice F. BACOU, P'activité motrice. Elle contient, outre l'équipement enzymatique nécessaire à la couverture énergétique de la décrirons l'importance de l'innervation motrice dans la genèse et le maintien des propriétés des différents

Paris-Sud XI, Université de

450

La rfraction des Matriaux : de Descartes Harry Potter  

E-Print Network (OSTI)

deuxième ordre Ions à paires libres R. D. Shannon et al. J. Phys. Chem Ref. Data 31, n° 4, (2002) 931 hal1 La réfraction des Matériaux : de Descartes à Harry Potter Gilles Le Flem ICMCB ( mars 2007)Gilles Descartes à Harry Potter (notes informelles et diapositives du séminaire de 16/03/07) En juin 2006 le groupe

Boyer, Edmond

451

TIC ET DEVELOPPEMENT DURABLE DES TERRITOIRES DE MONTAGNE Franoise Papa,  

E-Print Network (OSTI)

TIC ET DEVELOPPEMENT DURABLE DES TERRITOIRES DE MONTAGNE Françoise Papa, Maître de conférences en : Les TIC sont souvent perçues comme pouvant réduire, voire éliminer, les contraintes géographiques d peuvent s'opérer entre TIC et développement durable ? Après avoir précisé le contexte et les enjeux du

Paris-Sud XI, Université de

452

S'eparation des convexes J.Ch. Gilbert, Inria  

E-Print Network (OSTI)

S'eparation des convexes J.Ch. Gilbert, Inria Th'eor`eme de Hahn­Banach (forme analytique) ffl Soit. ffl Th'eor`eme de Hahn­Banach (forme analytique). Si \\Delta E est un espace vectoriel (non n toujours un f tel que l'on ait 'egalit'e. 1 #12; Th'eor`emes de Hahn­Banach (formes g'eom'etriques) ffl

453

Reprsentations crbrales des articulateurs de la parole Krystyna Grabski1  

E-Print Network (OSTI)

observé le déclenchement de mouvements spécifiques et ont ainsi établi une cartographie corticale motrice liée au contrôle de différentes parties du corps. Cette organisation corticale motrice, dite son organisation spatiale que de la taille des zones motrices associées à chaque partie du corps. Ce

Paris-Sud XI, Université de

454

DE QUELQUES FACTEURS DETERMINANT LE DEROULEMENT DES CARRIERES DE PRATIQUANTS  

E-Print Network (OSTI)

'Etude Sport et Actions Motrices CesamS EA 4260 ­ UFR STAPS Université de Caen Basse-Normandie Deux auteurs motrice spécialisée qui, dans l'immense majorité des cas, n'est pas en droit leur occupation principale en charge du sport, entendu au sens d'activités motrices codifiées sous forme compétitive et

Boyer, Edmond

455

Multi-Megawatt Organic Rankine Engine power plant (MORE). Phase IA final report: system design of MORE power plant for industrial energy conservation emphasizing the cement industry  

SciTech Connect

The Multi-Megawatt Organic Rankine Engine (MORE) program is directed towards the development of a large, organic Rankine power plant for energy conservation from moderate temperature industrial heat streams. Organic Rankine power plants are ideally suited for use with heat sources in the temperature range below 1100/sup 0/F. Cement manufacture was selected as the prototype industry for the MORE system because of the range of parameters which can be tested in a cement application. This includes process exit temperatures of 650/sup 0/F to 1110/sup 0/F for suspension preheater and long dry kilns, severe dust loading, multi-megawatt power generation potential, and boiler exhaust gas acid dew point variations. The work performed during the Phase IA System Design contract period is described. The System Design task defines the complete MORE system and its installation to the level necessary to obtain detailed performance maps, equipment specifications, planning of supporting experiments, and credible construction and hardware cost estimates. The MORE power plant design is based upon installation in the Black Mountain Quarry Cement Plant near Victorville, California.

Bair, E.K.; Breindel, B.; Collamore, F.N.; Hodgson, J.N.; Olson, G.K.

1980-01-31T23:59:59.000Z

456

E-Print Network 3.0 - artikel des frhrn Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

17 Erste Satzung zur nderung der Zulassungsordnung der Universitt Stuttgart fr den Deutsch-Franzsischen Masterstudiengang Empirische Politik-und Sozialforschung Summary: des...

457

E-Print Network 3.0 - absicherung des betriebsverhaltens Sample...  

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Lehre des Institutes mit eingebunden und knnen so spannende Erfahrungen im Bereich Deutsch... Finanzierung und Absicherung luft ber das Erasmus-Programm zwischen der...

458

E-Print Network 3.0 - abschlussbericht kurzfassung des Sample...  

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Schulke Summary: konomischen Effizienz des Anti-Doping-Systems 10. Frauen-Fuball-WM: konomische Effekte III... gem. 16 (9) PO BWL und VWL Zweite Teilleistung zur...

459

E-Print Network 3.0 - analyse des donnes Sample Search Results  

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. Lequel des polynomes donne la ... Source: Pujo-Menjouet, Laurent - Institut Camille Jordan, Universit Claude Bernard Lyon-I Collection: Mathematics ; Biology and Medicine 2...

460

E-Print Network 3.0 - analyse des donnees Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

"fglass.dat". La description des ... Source: Pujo-Menjouet, Laurent - Institut Camille Jordan, Universit Claude Bernard Lyon-I Collection: Mathematics ; Biology and Medicine 2...

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


461

RSULTATS EXPRIMENTAUX RCENTS EN PHYSIQUE DES HYPERFRAGMENTS Par le Dr J. SACTON,  

E-Print Network (OSTI)

et au synchroton à protons du CERN en 1962. Les interactions nucléaires des mésons K- constituent, en

Boyer, Edmond

462

Contribution la mtrologie magntique des multiples d'acclrateurs : les quadruples du Synchroton SOLEIL.  

E-Print Network (OSTI)

??Dans les acclrateurs de particules de type synchrotron tels que SOLEIL, le faisceau de particules doit rpondre des critres toujours plus exigeants afin damliorer (more)

Madur, Arnaud

2006-01-01T23:59:59.000Z

463

Fait marquant 2011 Intgrit de surface et tenue en fatigue des pices mtalliques usines par  

E-Print Network (OSTI)

surfaces usinées avec des angles d'inclinaison, f, différents #12;L'Institut FARMAN de l'?cole Normale

464

journe de l'Institut Farman Jeudi 22 novembre 2012 Pavillon des Jardins  

E-Print Network (OSTI)

6ème journée de l'Institut Farman Jeudi 22 novembre 2012 ­ Pavillon des Jardins Programme 9h00 - 9h

465

journe de l'Institut Farman Jeudi 24 novembre 2011 Pavillon des Jardins  

E-Print Network (OSTI)

5ème journée de l'Institut Farman Jeudi 24 novembre 2011 ­ Pavillon des Jardins Programme 9h00 - 9h

466

E-Print Network 3.0 - apport des isotopes Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

Novel, J.P., Ravello, M., Dray, M., and Zuppi, G.M., 1996, Apport des analyses... ISOTOPE COMPOSITION OF PRECIPITATION AND SURFACE WATERS: CONSIDERATIONS FOR STUDIES OF...

467

Konzeption einer off-line Version der Ergnzung des AGK-Thesaurus  

Science Journals Connector (OSTI)

Die Erstellung des Basisthesaurus unserer Arbeitsgemeinschaft (RTTGER et al., 1973a, RTTGER et al., 1973b) kann zum jetzigen Zeitpunkt als weitgehend abgeschlossen gelten.

P. Ries; V. Loy; W. Ksel; W. Fabricius

1976-01-01T23:59:59.000Z

468

INFORMALITS NORMALISES : FACTEURS D'INTEGRATION CONOMIQUE ET SOCIALE DES BRSILIENNES EN GUYANE  

E-Print Network (OSTI)

'Africains échappés du Surinam (1880), forment des villages le long du fleuve Maroni. Les descendants de ces

Boyer, Edmond

469

Centenaire de la Socit des Amis du Musum national d'histoire naturelle Enrichissement et valorisation  

E-Print Network (OSTI)

dessinatrice : « Ils sont d'une personne du même sexe que celle à qui nous devons ceux des insectes de Surinam

470

E-Print Network 3.0 - activities sachstandsbericht des Sample...  

NLE Websites -- All DOE Office Websites (Extended Search)

Weltklimarats eingesetzten Modellen errechnet wurde10 . Es gibt also keine Diskrepanz... solare Beeinflussung des Klimas. Eine aktivere Sonne knne ... Source: Stock, Manfred -...

471

Elektrische Charakterisierung und Modellierung von metallischen Interkonnektoren (MIC) des SOFC-Stacks.  

E-Print Network (OSTI)

??In dieser Arbeit wurde der Effekt des metallischen Interkonnektors (MIC) auf die Leistungsdichte der anodengesttzten Zelle (ASC) sowie die Wechselwirkung zwischen dem MIC und der (more)

Kornely, Michael

2012-01-01T23:59:59.000Z

472

Correction-solution partielle des Feuilles 1 8 Exercice 1.1 : Solutions  

E-Print Network (OSTI)

STIA3 Correction-solution partielle des Feuilles 1 à 8 Exercice 1.1 : Solutions : Df = R+ Dg = Rn 5

Mas, André

473

E-Print Network 3.0 - alle hrtexte des Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

Search Sample search results for: alle hrtexte des Page: << < 1 2 3 4 5 > >> 1 ADAPTING DATABASE IMPLEMENTATION TECHNIQUES TO MANAGE VERY LARGE KNOWLEDGE BASES Summary: history...

474

tude comparative des systmes verbaux du franais et du persan (mode, temps, aspect).  

E-Print Network (OSTI)

??Cette tude comparative des systmes verbaux du persan et du franais est constitue de trois chapitres. Nous consacrerons le dbut de cette thse au verbe (more)

Sadidi, Zahra

2012-01-01T23:59:59.000Z

475

E-Print Network 3.0 - aenderung des atomgesetzes Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

BAUSENWEIN. - Aenderung des Peltiereffektes mit der Temperatur 1'ariation de l'effet Peltier avec la... 'effet thermomagntique. D'aprs les rsultats variables obtenus avec...

476

E-Print Network 3.0 - aenderung des uebereinkommens Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

BAUSENWEIN. - Aenderung des Peltiereffektes mit der Temperatur 1'ariation de l'effet Peltier avec la... 'effet thermomagntique. D'aprs les rsultats variables obtenus avec...

477

Des plans-lumire nocturnes la chronotopie. Vers un urbanisme temporel.  

E-Print Network (OSTI)

??Cette thse s'intresse la prise en compte des rythmes urbains en urbanisme. Alors que les volutions conomiques, sociales et techniques ont progressivement transform nos (more)

Mallet, Sandra

2009-01-01T23:59:59.000Z

478

Effet des saponines strodiques de fe-nugrec sur l'hypercholestrolmie du  

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rat des sables diabétique et hypercholestérolémique. Y Dahmani 1,Y Dahmani J Catala F Fichaux C Azema

Boyer, Edmond

479

Analyse de la biodiversit vgtale dans la Fort des Abeilles, Gabon  

Science Journals Connector (OSTI)

A biodiversity analysis of the vegetation in the Fort des Abeilles (Gabon) has been undertaken using the transects method...Paraberlinia bifoliolata (Caesalpinioideae) and Aucoumea klaineana (Burseraceae). Mean ...

K. Gesnot; K. Van Essche; J. Lejoly

1996-01-01T23:59:59.000Z

480

Aperu sur les groupements secondaires Marantaceae, Zingiberaceae et Costaceae de la Fort des Abeilles (Gabon)  

Science Journals Connector (OSTI)

Les groupements Marantaceae, Zingiberaceae et Costaceae sont recenss en milieu naturel au Gabon dans la Fort des Abeilles aux environs...

M. M. Dhetchuvi

1996-01-01T23:59:59.000Z

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


481

E-Print Network 3.0 - auswirkungen des klimas Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

sind... Meteorologie, das Institut fr Kstenforschung des GKSS-Forschungszentrums Geesthacht und das Deutsche... Klimarechenzentrum beteiligt sind. Am Hamburger KlimaCampus...

482

E-Print Network 3.0 - aktuellen stand des Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

des Monats Communicatorpreis-Preis 2011 an Gerd Gigerenzer Der Source: Manstein, Dietmar J. - Department of Biophysical Chemistry, Medizinische Hochschule Hannover Collection:...

483

E-Print Network 3.0 - augmentation des allergies Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

news, des informations sur la pdagogie, sur la recherche, sur les... augmentation du numerus clausus ainsi que l'lvation attendue et trs ... Source: Grangier, Philippe -...

484

E-Print Network 3.0 - als forscher des Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

fr Festkrperforschung Collection: Materials Science 12 Portal fr Organische Chemie Chemie-Nachrichten > Juni Summary: die Forscher des Lehrstuhls fr Biophysik bereits...

485

E-Print Network 3.0 - adaptation des fiches Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

Catgorie Emploi Catgorie B BAP Emploi type Poste localis GMP IUT... MISSION OU RESUME DES FONCTIONS exercer sur ce poste Maintenance ... Source: Sart, Remi -...

486

Collge doctoral ED n 432 : Sciences des Mtiers de l'Ingnieur  

E-Print Network (OSTI)

'examinateur. Merci à Bernard Simon, Ingénieur de recherche à la SAFT (Société des Accumulateurs Fixes et de Traction

Boyer, Edmond

487

Untersuchungen zur diagnostischen Wertigkeit der urinbasierten Marker Zytologie, FISH, NMP22 und ImmunoCyt in Urinproben aus dem oberen Harntrakt zur Detektion von Urothelkarzinomen des oberen Harntraktes .  

E-Print Network (OSTI)

??Nierenbecken- und Harnleitertumoren ergeben ungefhr 5 - 10% aller Tumoren des Harntraktes. Da sich der berwiegende Teil der Tumoren des oberen Harntraktes bei Diagnosestellung bereits (more)

Esser, Michael

2015-01-01T23:59:59.000Z

488

LA SPECTROSCOPIE DE PERTE D'NERGIE DES LECTRONS APPLIQUE AUX BATTERIES AU LITHIUM : EXPRIENCES ET SIMULATIONS AU SEUIL K DU LITHIUM.  

E-Print Network (OSTI)

??Ce travail combine tudes exprimentales et thoriques au seuil K du lithium dans le but de permettre une meilleure comprhension des proprits des matriaux pour (more)

Mauchamp, V.

2006-01-01T23:59:59.000Z

489

tude multi-chelle du comportement thermo-hydro-mcanique des matriaux cimentaires : approche morphologique pour la prise en compte de la msostructure.  

E-Print Network (OSTI)

??L'tude du comportement du bton en temprature est un problme majeur qui vise in fine valuer le niveau de scurit des structures sous des (more)

Le, Thi Thu Huong

2011-01-01T23:59:59.000Z

490

Le dveloppement durable et le secteur des pches et de l'aquaculture au Gabon : une tude de la gestion durable des ressources halieutiques et leur cosystme dans les provinces de l'Estuaire et de l'Ogoou Maritime.  

E-Print Network (OSTI)

?? l'chelle mondiale, la pche maritime est caractrise par une surexploitation des ressources disponibles dans les diffrentes pcheries ayant des impacts trs importants sur l'cosystme (more)

Ekouala, Landry

2013-01-01T23:59:59.000Z

491

Recherche de l'conomie des ressources naturelles par des tudes de conception de coeurs de racteurs eau et haut facteur de conversion combustibles mixtes Thorium / Uranium / Plutonium.  

E-Print Network (OSTI)

??Dans le cadre des tudes neutroniques d'innovation sur les curs de Racteurs Eau lgre Pressurise (REP) de 3me gnration, la recherche de l'conomie des (more)

Vallet, Vanessa

2012-01-01T23:59:59.000Z

493

Analyse de modles pour ITER ; Traitement des conditions aux limites de systmes modlisant le plasma de bord dans un tokamak.  

E-Print Network (OSTI)

??Cette thse concerne l'tude des interactions entre le plasma et la paroi d'un racteur fusion nuclaire de type tokamak. L'objectif est de proposer des (more)

Auphan, Thomas

2014-01-01T23:59:59.000Z

494

Ptrologie et gochimie du marbre brucite et des borates associs au gisement de tungstne de Costabonne (Pyrnes Orientales, France).  

E-Print Network (OSTI)

??Le monzogranite hercynien de Costabonne est intrusif dans une srie prcambrienne cambrienne. Des roches mtasomatiques se sont dveloppes dans l'aurole de contact. L'tude des (more)

Dubru, Michel

1986-01-01T23:59:59.000Z

495

L. JANICKI.2014 Feinere Zerlegung der Spektrallinien von Quecksilber, Kadmium, Natrium, Zink, Thallium und Wasserstoff (Dcomposition des raies spectrales  

E-Print Network (OSTI)

, Thallium und Wasserstoff (Décomposition des raies spectrales du mercure, du cadmium, du sodium, du zinc, du

Boyer, Edmond

496

Synthse de la table ronde n 4 De la terre aux aliments, des valeurs aux rgles... Quelles solutions ?  

E-Print Network (OSTI)

directement à l'encontre des travaux d'Amartya Sen qui, dans son ouvrage Poverty and Famines: An Essay

Paris-Sud XI, Université de

497

Max-Planck-Gesellschaft Rede des Prsidenten zur Festversammlung 2011 62. Jahresversammlung der Max-Planck-Gesellschaft  

E-Print Network (OSTI)

Max-Planck-Gesellschaft Rede des Präsidenten zur Festversammlung 2011 1 62. Jahresversammlung der Max-Planck-Gesellschaft Rede des Präsidenten, Prof. Peter Gruss zur Festversammlung der Max #12;Max-Planck-Gesellschaft Rede des Präsidenten zur Festversammlung 2011 2 Wissenschaftler

Falge, Eva

498

Le dynamisme des nouvelles places marchandes de l'Est algrien : reconfiguration urbaine et nouvelles donnes sociales  

E-Print Network (OSTI)

1 Le dynamisme des nouvelles places marchandes de l'Est algérien : reconfiguration urbaine et Dynamiques urbaines et accumulation marchande L'importance des politiques publiques dans les processus de libéralisation du marché à partir des années 1990, et l'importante accumulation marchande qui en découlera vont

Paris-Sud XI, Université de

499

Satzung zur Streichung des Schwerpunkts Niederdeutsch in den Lehramtsstudiengngen Deutsch Gymnasium und Regionale Schule  

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1 Satzung zur Streichung des Schwerpunkts Niederdeutsch in den Lehramtsstudiengängen Deutsch Deutsch im Lehramtsstudiengang Gymnasium Die Prüfungs- und Studienordnung für den Teilstudiengang Deutsch: 1. § 2 Absatz 2 wird wie folgt gefasst: ,,(2) Für Lehramtsstudierende des Teilstudiengangs Deutsch

Greifswald, Ernst-Moritz-Arndt-Universität

500

Marchioli, A., (2006), Marketing social et efficacit des campagnes de prvention de sant publique : apports et  

E-Print Network (OSTI)

as well as useful implications for practitioners. Key words ­ Social marketing, persuasion, public health publique : apports et implications des récents modèles de la communication persuasive », Communication implications des récents modèles de la communication persuasive. Audrey MARCHIOLI1 Résumé ­ Illustrant un

Boyer, Edmond