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1

Compound and Elemental Analysis At Black Warrior Area (DOE GTP...  

Open Energy Info (EERE)

Compound and Elemental Analysis At Black Warrior Area (DOE GTP) Exploration Activity Details Location Black Warrior Area Exploration Technique Compound and Elemental Analysis...

2

Cuttings Analysis At Black Warrior Area (DOE GTP) | Open Energy...  

Open Energy Info (EERE)

Cuttings Analysis At Black Warrior Area (DOE GTP) Exploration Activity Details Location Black Warrior Area Exploration Technique Cuttings Analysis Activity Date Usefulness not...

3

Black Warrior Geothermal Area | Open Energy Information  

Open Energy Info (EERE)

Black Warrior Geothermal Area Black Warrior Geothermal Area Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Geothermal Resource Area: Black Warrior Geothermal Area Contents 1 Area Overview 2 History and Infrastructure 3 Regulatory and Environmental Issues 4 Exploration History 5 Well Field Description 6 Geology of the Area 7 Geofluid Geochemistry 8 NEPA-Related Analyses (0) 9 Exploration Activities (8) 10 References Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"TERRAIN","zoom":6,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"500px","height":"300px","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":39.9,"lon":-119.22,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

4

Black Warrior, Nevada: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Warrior, Nevada: Energy Resources Jump to: navigation, search Name Black Warrior, Nevada References Nevada Geothermal Power1 This article is a stub. You can help OpenEI by...

5

San Juan Montana Thrust Belt WY Thrust Belt Black Warrior  

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

San San Juan Montana Thrust Belt WY Thrust Belt Black Warrior Paradox - San Juan NW (2) Uinta- Piceance Paradox - San Juan SE (2) Florida Peninsula Appalachian- NY (1) Appalachian OH-PA (2) Appalachian Eastern PA (3) Appalachian Southern OH (4) Appalachian Eastern WV (5) Appalachian WV-VA (6) Appalachian TN-KY (7) Piceance Greater Green River Eastern OR-WA Ventura Williston Williston NE (2) Williston NW (1) Williston South (3) Eastern Great Basin Ventura West, Central, East Eastern OR-WA Eastern Great Basin Appalachian Denver Florida Peninsula Black Warrior W Y T h ru st B e lt Powder River Paradox- Uinta- Grtr Green River MT Thrust Belt Powder River North (1) Powder River South (2) Denver North (1) Denver South (3) Denver Middle (2) TX CA MT AZ ID NV NM CO IL OR UT KS WY IA NE SD MN ND OK FL WI MO AL WA GA AR LA MI IN PA NY NC MS TN KY VA OH SC

6

Black Warrior Geothermal Area | Open Energy Information  

Open Energy Info (EERE)

Black Warrior Geothermal Area Black Warrior Geothermal Area (Redirected from Black Warrior Area) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Geothermal Resource Area: Black Warrior Geothermal Area Contents 1 Area Overview 2 History and Infrastructure 3 Regulatory and Environmental Issues 4 Exploration History 5 Well Field Description 6 Geology of the Area 7 Geofluid Geochemistry 8 NEPA-Related Analyses (0) 9 Exploration Activities (8) 10 References Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"TERRAIN","zoom":6,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"500px","height":"300px","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":39.9,"lon":-119.22,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

7

Core Analysis At Black Warrior Area (DOE GTP) | Open Energy Informatio...  

Open Energy Info (EERE)

Black Warrior Area (DOE GTP) Exploration Activity Details Location Black Warrior Area Exploration Technique Core Analysis Activity Date Usefulness not indicated DOE-funding Unknown...

8

Slim Holes At Black Warrior Area (DOE GTP) | Open Energy Information  

Open Energy Info (EERE)

Slim Holes At Black Warrior Area (DOE GTP) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Slim Holes At Black Warrior Area (DOE GTP) Exploration...

9

square-mile Black Warrior Basin  

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

will inject CO will inject CO 2 into a coalbed methane (CBM) well in Tuscaloosa County, Alabama, to assess the capability of mature CBM reservoirs to receive and adsorb large volumes of CO 2 . Injection began at the test site on June 15; the site was selected because it is representative of the 23,000- square-mile Black Warrior Basin located in northwestern Alabama and northeastern Mississippi. It is estimated that this area has the potential to store in the range of 1.1 to 2.3 Gigatons of CO 2 , which is approximately the amount that Alabama's coal-fired power plants emit in two decades. The targeted coal seams range from 940 to 1,800 feet deep and are one to six feet thick. Approximately 240 tons of CO 2 will be injected over a 45- to 60-day period. More information

10

Black Warrior Elec Member Corp | Open Energy Information  

Open Energy Info (EERE)

Black Warrior Elec Member Corp Black Warrior Elec Member Corp Jump to: navigation, search Name Black Warrior Elec Member Corp Place Alabama Utility Id 1780 Utility Location Yes Ownership C NERC Location SERC NERC SERC Yes Activity Distribution Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png Camp House Electric Service Residential City Limits- Residential Residential City Limits- Small Commercial Commercial Farm Electric Service Commercial Light and Power Service- Large Commercial Light and Power Service- Medium Commercial Light and Power Service- Small Commercial Outdoor Lighting Service (100 W High Pressure Sodium) Lighting

11

File:EIA-BlackWarrior-GAS.pdf | Open Energy Information  

Open Energy Info (EERE)

Black Warrior Basin By 2001 Gas Reserve Class Black Warrior Basin By 2001 Gas Reserve Class Size of this preview: 776 × 600 pixels. Full resolution ‎(6,600 × 5,100 pixels, file size: 14.53 MB, MIME type: application/pdf) Description Black Warrior Basin By 2001 Gas Reserve Class Sources Energy Information Administration Authors Samuel H. Limerick; Lucy Luo; Gary Long; David F. Morehouse; Jack Perrin; Robert F. King Related Technologies Oil, Natural Gas Creation Date 2005-09-01 Extent Regional Countries United States UN Region Northern America States Alabama, Mississippi File history Click on a date/time to view the file as it appeared at that time. Date/Time Thumbnail Dimensions User Comment current 17:52, 20 December 2010 Thumbnail for version as of 17:52, 20 December 2010 6,600 × 5,100 (14.53 MB) MapBot (Talk | contribs) Automated bot upload

12

File:Black.Warrior.Basin usgs.map.pdf | Open Energy Information  

Open Energy Info (EERE)

Black.Warrior.Basin usgs.map.pdf Black.Warrior.Basin usgs.map.pdf Jump to: navigation, search File File history File usage Undiscovered Oil and Gas Resources of the Black Warrior Basin Province of Alabama and Mississippi Size of this preview: 742 × 600 pixels. Full resolution ‎(1,860 × 1,504 pixels, file size: 148 KB, MIME type: application/pdf) Description Undiscovered Oil and Gas Resources of the Black Warrior Basin Province of Alabama and Mississippi Sources USGS Related Technologies Oil, Gas Creation Date 2007 Extent Black Warrior Basin Province Countries United States UN Region Northern America States Alabama, Mississippi Location of the Black Warrior Basin Province in northwestern Alabama and northeastern Mississippi, published in the USGS report entitled, Geologic Assessment of Undiscovered Oil and Gas Resources of the Black Warrior Basin

13

Gas Flux Sampling At Black Warrior Area (DOE GTP) | Open Energy...  

Open Energy Info (EERE)

GTP) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Gas Flux Sampling At Black Warrior Area (DOE GTP) Exploration Activity Details Location...

14

Flow Test At Black Warrior Area (DOE GTP) | Open Energy Information  

Open Energy Info (EERE)

Linked Data Page Edit History Share this page on Facebook icon Twitter icon Flow Test At Black Warrior Area (DOE GTP) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal...

15

Black Warrior: Sub-soil Gas and Fluid Inclusion Exploration and...  

Open Energy Info (EERE)

Warrior: Sub-soil Gas and Fluid Inclusion Exploration and Slim Well Drilling Geothermal Project Jump to: navigation, search Last modified on July 22, 2011. Project Title Black...

16

2-M Probe At Black Warrior Area (DOE GTP) | Open Energy Information  

Open Energy Info (EERE)

Search Page Edit History Facebook icon Twitter icon 2-M Probe At Black Warrior Area (DOE GTP) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity:...

17

Water-Gas Samples At Black Warrior Area (DOE GTP) | Open Energy...  

Open Energy Info (EERE)

GTP) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Water-Gas Samples At Black Warrior Area (DOE GTP) Exploration Activity Details Location...

18

File:EIA-BlackWarrior-BOE.pdf | Open Energy Information  

Open Energy Info (EERE)

BOE.pdf BOE.pdf Jump to: navigation, search File File history File usage Black Warrior Basin By 2001 BOE Reserve Class Size of this preview: 776 × 600 pixels. Full resolution ‎(6,600 × 5,100 pixels, file size: 14.52 MB, MIME type: application/pdf) Description Black Warrior Basin By 2001 BOE Reserve Class Sources Energy Information Administration Authors Samuel H. Limerick; Lucy Luo; Gary Long; David F. Morehouse; Jack Perrin; Robert F. King Related Technologies Oil, Natural Gas Creation Date 2005-09-01 Extent Regional Countries United States UN Region Northern America States Alabama, Mississippi File history Click on a date/time to view the file as it appeared at that time. Date/Time Thumbnail Dimensions User Comment current 17:51, 20 December 2010 Thumbnail for version as of 17:51, 20 December 2010 6,600 × 5,100 (14.52 MB) MapBot (Talk | contribs) Automated bot upload

19

File:EIA-BlackWarrior-LIQ.pdf | Open Energy Information  

Open Energy Info (EERE)

LIQ.pdf LIQ.pdf Jump to: navigation, search File File history File usage Black Warrior Basin By 2001 Liquids Reserve Class Size of this preview: 776 × 600 pixels. Full resolution ‎(6,600 × 5,100 pixels, file size: 14.75 MB, MIME type: application/pdf) Description Black Warrior Basin By 2001 Liquids Reserve Class Sources Energy Information Administration Authors Samuel H. Limerick; Lucy Luo; Gary Long; David F. Morehouse; Jack Perrin; Robert F. King Related Technologies Oil, Natural Gas Creation Date 2005-09-01 Extent Regional Countries United States UN Region Northern America States Alabama, Mississippi File history Click on a date/time to view the file as it appeared at that time. Date/Time Thumbnail Dimensions User Comment current 17:52, 20 December 2010 Thumbnail for version as of 17:52, 20 December 2010 6,600 × 5,100 (14.75 MB) MapBot (Talk | contribs) Automated bot upload

20

Gas Sampling At Black Warrior Area (DOE GTP) | Open Energy Information  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » Gas Sampling At Black Warrior Area (DOE GTP) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Gas Sampling At Black Warrior Area (DOE GTP) Exploration Activity Details Location Black Warrior Area Exploration Technique Gas Sampling Activity Date Usefulness not indicated DOE-funding Unknown References (1 January 2011) GTP ARRA Spreadsheet Retrieved from "http://en.openei.org/w/index.php?title=Gas_Sampling_At_Black_Warrior_Area_(DOE_GTP)&oldid=689412" Categories: Exploration Activities DOE Funded Activities ARRA Funded Activities

Note: This page contains sample records for the topic "black warrior paradox" 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

STRATIGRAPHIC ARCHITECTURE OF THE FLOYD (NEAL) SHALE IN THE BLACK WARRIOR BASIN OF ALABAMA AND MISSISSIPPI: IMPLICATIONS FOR REGIONAL EXPLORATION POTENTIAL.  

E-Print Network (OSTI)

?? The Floyd (Neal) Shale is an organic-rich black shale in the Black Warrior Basin that is being explored for its unconventional gas potential. To (more)

Caton, Matthew MacGregor

2011-01-01T23:59:59.000Z

22

Black Warrior: Sub-soil Gas and Fluid Inclusion Exploration and Slim Well  

Open Energy Info (EERE)

Warrior: Sub-soil Gas and Fluid Inclusion Exploration and Slim Well Warrior: Sub-soil Gas and Fluid Inclusion Exploration and Slim Well Drilling Geothermal Project Jump to: navigation, search Last modified on July 22, 2011. Project Title Black Warrior: Sub-soil Gas and Fluid Inclusion Exploration and Slim Well Drilling Project Type / Topic 1 Recovery Act: Geothermal Technologies Program Project Type / Topic 2 Validation of Innovative Exploration Technologies Project Description The project area encompasses 6,273 acres of both private and federal lands including water and surface rights. It is reasonable to expect a capacity of about 20 MW. GeothermEx estimated a potential capacity of 40 MW. Black Warrior is a large blind geothermal prospect near the Pyramid Lake Indian Reservation that was identified by reconnaissance temperature gradient drilling in the 1980s by Philips Petroleum but was never tested through deep exploration drilling. Although the 10 square miles of high heat flow in the area reveals significant energy potential it also makes selection of an optimal exploration drilling target difficult.

23

Feasibility study of heavy oil recovery in the Appalachian, Black Warrior, Illinois, and Michigan basins  

Science Conference Proceedings (OSTI)

This report is one of a series of publications assessing the feasibility of increasing domestic heavy oil production. Each report covers select areas of the United States. The Appalachian, Black Warrior, Illinois, and Michigan basins cover most of the depositional basins in the Midwest and Eastern United States. These basins produce sweet, paraffinic light oil and are considered minor heavy oil (10{degrees} to 20{degrees} API gravity or 100 to 100,000 cP viscosity) producers. Heavy oil occurs in both carbonate and sandstone reservoirs of Paleozoic Age along the perimeters of the basins in the same sediments where light oil occurs. The oil is heavy because escape of light ends, water washing of the oil, and biodegradation of the oil have occurred over million of years. The Appalachian, Black Warrior, Illinois, and Michigan basins' heavy oil fields have produced some 450,000 bbl of heavy oil of an estimated 14,000,000 bbl originally in place. The basins have been long-term, major light-oil-producing areas and are served by an extensive pipeline network connected to refineries designed to process light sweet and with few exceptions limited volumes of sour or heavy crude oils. Since the light oil is principally paraffinic, it commands a higher price than the asphaltic heavy crude oils of California. The heavy oil that is refined in the Midwest and Eastern US is imported and refined at select refineries. Imports of crude of all grades accounts for 37 to >95% of the oil refined in these areas. Because of the nature of the resource, the Appalachian, Black Warrior, Illinois and Michigan basins are not expected to become major heavy oil producing areas. The crude oil collection system will continue to degrade as light oil production declines. The demand for crude oil will increase pipeline and tanker transport of imported crude to select large refineries to meet the areas' liquid fuels needs.

Olsen, D.K.; Rawn-Schatzinger, V.; Ramzel, E.B.

1992-07-01T23:59:59.000Z

24

Feasibility study of heavy oil recovery in the Appalachian, Black Warrior, Illinois, and Michigan basins  

SciTech Connect

This report is one of a series of publications assessing the feasibility of increasing domestic heavy oil production. Each report covers select areas of the United States. The Appalachian, Black Warrior, Illinois, and Michigan basins cover most of the depositional basins in the Midwest and Eastern United States. These basins produce sweet, paraffinic light oil and are considered minor heavy oil (10{degrees} to 20{degrees} API gravity or 100 to 100,000 cP viscosity) producers. Heavy oil occurs in both carbonate and sandstone reservoirs of Paleozoic Age along the perimeters of the basins in the same sediments where light oil occurs. The oil is heavy because escape of light ends, water washing of the oil, and biodegradation of the oil have occurred over million of years. The Appalachian, Black Warrior, Illinois, and Michigan basins` heavy oil fields have produced some 450,000 bbl of heavy oil of an estimated 14,000,000 bbl originally in place. The basins have been long-term, major light-oil-producing areas and are served by an extensive pipeline network connected to refineries designed to process light sweet and with few exceptions limited volumes of sour or heavy crude oils. Since the light oil is principally paraffinic, it commands a higher price than the asphaltic heavy crude oils of California. The heavy oil that is refined in the Midwest and Eastern US is imported and refined at select refineries. Imports of crude of all grades accounts for 37 to >95% of the oil refined in these areas. Because of the nature of the resource, the Appalachian, Black Warrior, Illinois and Michigan basins are not expected to become major heavy oil producing areas. The crude oil collection system will continue to degrade as light oil production declines. The demand for crude oil will increase pipeline and tanker transport of imported crude to select large refineries to meet the areas` liquid fuels needs.

Olsen, D.K.; Rawn-Schatzinger, V.; Ramzel, E.B.

1992-07-01T23:59:59.000Z

25

Absence of Black Holes Information Paradox in Group Field Cosmology  

E-Print Network (OSTI)

In this paper we will analyse the black hole information paradox in group field cosmology. We will first construct a group field cosmology with third quantized gauge symmetry. Then we will argue that that in this group field cosmology the process that change the topology of spacetime are unitarity process. Thus, the information paradox from this perspective appears only because we are using a second quantized formalism to explain a third quantized process. A similar paradox would also occur if we analyse a second quantized process in first quantized formalism. Hence, we will demonstrated that in reality there is no information paradox but only a breakdown of the second quantized formalism.

Mir Faizal

2013-01-02T23:59:59.000Z

26

Potential for CO2 Sequestration and Enhanced Coalbed Methane Production, Blue Creek Field, NW Black Warrior Basin, Alabama  

E-Print Network (OSTI)

Carbon dioxide (CO2) is a primary source of greenhouse gases. Injection of CO2 from power plants near coalbed reservoirs is a win-win method to reducing emissions of CO2 to the atmosphere. Limited studies have investigated CO2 sequestration and enhanced coalbed methane production in San Juan and Alberta basins, but reservoir modeling is needed to assess the potential of the Black Warrior basin. Alabama ranks 9th nationally in CO2 emissions from power plants; two electricity generation plants are adjacent to the Black Warrior coalbed methane fairway. This research project was a reservoir simulation study designed to evaluate the potential for CO2 sequestration and enhanced coalbed methane (ECBM) recovery in the Blue Creek Field of Black Warrior basin, Alabama. It considered the injection and production rate, the components of injected gas, coal dewatering, permeability anisotropy, various CO2 soak times, completion of multiple reservoir layers and pressure constraints at the injector and producer. The simulation study was based on a 5-spot well pattern 40-ac well spacing. Injection of 100 percent CO2 in coal seams resulted in average volumes of 0.57 Bcf of sequestered CO2 and average volumes of 0.2 Bcf of enhance methane production for the Mary Lee coal zone only, from an 80-acre 5-spot well pattern. For the entire Blue Creek field of the Black Warrior basin, if 100 percent CO2 is injected in the Pratt, Mary Lee and Black Creek coal zones, enhance methane resources recovered are estimated to be 0.3 Tcf, with a potential CO2sequestration capacity of 0.88 Tcf. The methane recovery factor is estimated to be 68.8 percent, if the three coal zones are completed but produced one by one. Approximately 700 wells may be needed in the field. For multi-layers completed wells, the permeability and pressure are important in determining the breakthrough time, methane produced and CO2 injected. Dewatering and soaking do not benefit the CO2 sequestration process but allow higher injection rates. Permeability anisotropy affects CO2 injection and enhanced methane recovery volumes of the field. I recommend a 5-spot pilot project with the maximum well BHP of 1,000 psi at the injector, minimum well BHP of 500 psi at the producer, maximum injection rate of 70 Mscf/D, and production rate of 35 Mscf/D. These technical results, with further economic evaluation, could generate significant projects for CO2 sequestration and enhance coalbed methane production in Blue Creek field, Black Warrior Basin, Alabama.

He, Ting

2009-12-01T23:59:59.000Z

27

GEOLOGIC SCREENING CRITERIA FOR SEQUESTRATION OF CO2 IN COAL: QUANTIFYING POTENTIAL OF THE BLACK WARRIOR COALBED METHANE FAIRWAY, ALABAMA  

SciTech Connect

Sequestration of CO{sub 2} in coal has potential benefits for reducing greenhouse gas emissions from the highly industrialized Carboniferous coal basins of North America and Europe and for enhancing coalbed methane recovery. Hence, enhanced coalbed methane recovery operations provide a basis for a market-based environmental solution in which the cost of sequestration is offset by the production and sale of natural gas. The Black Warrior foreland basin of west-central Alabama contains the only mature coalbed methane production fairway in eastern North America, and data from this basin provide an excellent basis for quantifying the carbon sequestration potential of coal and for identifying the geologic screening criteria required to select sites for the demonstration and commercialization of carbon sequestration technology. Coalbed methane reservoirs in the upper Pottsville Formation of the Black Warrior basin are extremely heterogeneous, and this heterogeneity must be considered to screen areas for the application of CO{sub 2} sequestration and enhanced coalbed methane recovery technology. Major screening factors include stratigraphy, geologic structure, geothermics, hydrogeology, coal quality, sorption capacity, technology, and infrastructure. Applying the screening model to the Black Warrior basin indicates that geologic structure, water chemistry, and the distribution of coal mines and reserves are the principal determinants of where CO{sub 2} can be sequestered. By comparison, coal thickness, temperature-pressure conditions, and coal quality are the key determinants of sequestration capacity and unswept coalbed methane resources. Results of this investigation indicate that the potential for CO{sub 2} sequestration and enhanced coalbed methane recovery in the Black Warrior basin is substantial and can result in significant reduction of greenhouse gas emissions while increasing natural gas reserves. Coal-fired power plants serving the Black Warrior basin in Alabama emit approximately 31 MMst (2.4 Tcf) of CO{sub 2} annually. The total sequestration capacity of the Black Warrior coalbed methane fairway at 350 psi is about 189 MMst (14.9 Tcf), which is equivalent to 6.1 years of greenhouse gas emissions from the coal-fired power plants. Applying the geologic screening model indicates that significant parts of the coalbed methane fairway are not accessible because of fault zones, coal mines, coal reserves, and formation water with TDS content less than 3,000 mg/L. Excluding these areas leaves a sequestration potential of 60 MMst (4.7 Tcf), which is equivalent to 1.9 years of emissions. Therefore, if about10 percent of the flue gas stream from nearby power plants is dedicated to enhanced coalbed methane recovery, a meaningful reduction of CO{sub 2} emissions can be realized for nearly two decades. If the fresh-water restriction were removed for the purposes of CO{sub 2} sequestration, an additional 10 MMst (0.9 Tcf) of CO{sub 2} could feasibly be sequestered. The amount of unswept coalbed methane in the fairway is estimated to be 1.49 Tcf at a pressure of 50 psi. Applying the screening model results in an accessible unswept gas resource of 0.44 Tcf. Removal of the fresh-water restriction would elevate this number to 0.57 Tcf. If a recovery factor of 80 percent can be realized, then enhanced recovery activities can result in an 18 percent expansion of coalbed methane reserves in the Black Warrior basin.

Jack C. Pashin; Richard E. Carroll; Richard H. Groshong Jr.; Dorothy E. Raymond; Marcella McIntyre; J. Wayne Payton

2004-01-01T23:59:59.000Z

28

Geohydrological feasibility study of the Black Warrior Basin for the potential applicability of Jack W. McIntyre`s patented process  

Science Conference Proceedings (OSTI)

Geraghty & Miller, Inc. of Midland, Texas conducted geological and hydrological feasibility studies of the potential applicability of Jack W. Mclntyre`s patented process for the recovery of natural gas from coalbed/sand formations in the Black Warrior Basin of Mississippi and Alabama through literature surveys. Methane gas from coalbeds in the Black Warrior Basin is confined to the coal fields of northern Alabama. Produced water from degasification of coalbeds is currently disposed by surface discharge. Treatment prior to discharge consists of short-term storage and in-stream dilution. Mr. Mclntyre`s process appears to be applicable to the Black Warrior Basin and could provide an environmentally sound alternative for produced water production.

Reed, P.D.

1994-03-01T23:59:59.000Z

29

Towards experimentally testing the paradox of black hole information loss  

E-Print Network (OSTI)

Information about the collapsed matter in a black hole will be lost if Hawking radiations are truly thermal. Recent studies discover that information can be transmitted from a black hole by Hawking radiations, due to their spectrum deviating from exact thermality when back reaction is considered. In this paper, we focus on the spectroscopic features of Hawking radiation from a Schwarzschild black hole, contrasting the differences between the nonthermal and thermal spectra. Of great interest, we find that the energy covariances of Hawking radiations for the thermal spectrum are exactly zero, while the energy covariances are non-trivial for the nonthermal spectrum. Consequently, the nonthermal spectrum can be distinguished from the thermal one by counting the energy covariances of successive emissions, which provides an avenue towards experimentally testing the long-standing "information loss paradox".

Zhang, Baocheng; Zhan, Ming-sheng; You, Li; 10.1103/PhysRevD.87.044006

2013-01-01T23:59:59.000Z

30

Quantum information cannot be completely hidden in correlations: implications for the black-hole information paradox  

E-Print Network (OSTI)

The black-hole information paradox has fueled a fascinating effort to reconcile the predictions of general relativity and those of quantum mechanics. Gravitational considerations teach us that black holes must trap everything that falls into them. Quantum mechanically the mass of a black hole leaks away as featureless (Hawking) radiation, but if the black hole vanishes, where is the information about the matter that made it? We treat the states of the in-fallen matter quantum mechanically and show that the black-hole information paradox becomes more severe. Our formulation of the paradox rules out one of the most conservative resolutions: that the state of the in-falling matter might be hidden in correlations between semi-classical Hawking radiation and the internal states of the black hole. As a consequence, either unitarity or Hawking's semi-classical predictions must break down. Any resolution of the black-hole information crisis must elucidate one of these possibilities.

Samuel L. Braunstein; Arun K. Pati

2006-03-13T23:59:59.000Z

31

Enhanced Coalbed Methane Recovery Through Sequestration of Carbon Dioxide: Potential for a Market-Based Environmental Solution in the Black Warrior Basin of Alabama  

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

Coalbed Methane Recovery Through Sequestration of Coalbed Methane Recovery Through Sequestration of Carbon Dioxide: Potential for a Market-Based Environmental Solution in the Black Warrior Basin of Alabama Jack C. Pashin (jpashin@gsa.state.al.us; 205-349-2852) Geological Survey of Alabama P.O. Box 869999 Tuscaloosa, AL 35486 Richard H. Groshong, Jr. (rgroshon@wgs.geo.ua.edu; 205-348-1882) Deparment of Geology University of Alabama Tuscaloosa, AL 35487 Richard E. Carroll (rcarroll@gsa.state.al.us; 205-349-2852) Geological Survey of Alabama P.O. Box 869999 Tuscaloosa, AL 35486 Abstract Sequestration of CO 2 in coal is a market-based environmental solution with potential to reduce greenhouse gas emissions while increasing coalbed methane recovery. Producing coalbed methane through injection of CO 2 is also more efficient than current techniques requiring

32

Ancient Warriors and the Origin of Chinese Purple  

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

Ancient Warriors and the Origin of Ancient Warriors and the Origin of Chinese Purple Figure 1: (a) Warrior # T18G21-08, a kneeling archer. The pigment samples in this study have been taken from this terracotta warrior. (b) Close-up picture of the purple paint on the terracotta warrior. (c) Images of the purple paint samples used in this study. In March 1974 during the sinking of wells for farmland irrigation near Xi'an, China, nine farmers made one of the world's most remarkable archaeological finds: the discovery of an army consisting of more than 8000 life-size terra cotta figures of warriors and horses of the First Emperor of Qin. One of the most intriguing puzzles is the purple synthetic pigments ("Chinese Purple" or "Han Purple" [1]) found on the terra cotta soldiers

33

Infinitely Many Resolutions of Hempel's Paradox  

E-Print Network (OSTI)

What sorts of observations could confirm the universal hypothesis that all ravens are black? Carl Hempel proposed a number of simple and plausible principles which had the odd ("paradoxical") result that not only do observations of black ravens confirm that hypothesis, but so too do observations of yellow suns, green seas and white shoes. Hempel's response to his own paradox was to call it a psychological illusion--i.e., white shoes do indeed confirm that all ravens are black. Karl Popper on the other hand needed no response: he claimed that no observation can confirm any general statement--there is no such thing as confirmation theory. Instead, we should be looking for severe tests of our theories, strong attempts to falsify them. Bayesian philosophers have (in a loose sense) followed the Popperian analysis of Hempel's paradox (while retaining confirmation theory): they have usually judged that observing a white shoe in a shoe store does not qualify as a severe test of the hypothesis and so, while providing Bayesian confirmation, does so to only a minute degree. This rationalizes our common intuition of non-confirmation. All of these responses to the paradox are demonstrably wrong--granting an ordinary Bayesian measure of confirmation. A proper Bayesian analysis reveals that observations of white shoes may provide the raven hypothesis any degree of confirmation whatsoever.

Kevin B. Korb

1993-01-01T23:59:59.000Z

34

Types of Paradox in Physics  

E-Print Network (OSTI)

Paradoxes are a relatively frequent occurrence in physics. The nature of their genesis is diverse and they are found in all branches of physics. There are a number of general and special classifications of paradoxes, but there are no classifications of paradoxes in physics. Nowadays, physics is a fundamental and rather formalized science, the paradoxes of which imply falsity and imprecision. One of the basic methods of addressing a problem is to present classifications that facilitate its formulation and study. This work groups together the paradoxes in physics according to certain common characteristics, which should assist in explaining the causes for paradox formation.

Dragoljub A. Cucic

2009-12-09T23:59:59.000Z

35

Paradox 7 for Windows 95  

Science Conference Proceedings (OSTI)

From the Publisher:Appropriate for either self-paced or group learning, this book provides an excellent way to learn Paradox 7.0 in a short period of time. The text/template package covers the most commonly used features of Paradox 7 for Windows 95.

Betsy Newberry

1997-05-01T23:59:59.000Z

36

Overcoming the EPR paradox  

E-Print Network (OSTI)

The EPR paradox has a local realist solution. Quantum theory does not require action at a distance, because entanglement can be derived from quantum superposition. If two identical or symmetrical populations are governed by uncertainty (locally, in each group), non-factorizable mixtures emerge. Quantum superposition, in turn, can be interpreted as a classical process whenever multiple components act as an ensemble. The net state of a Schrodinger's Cat system is a well-defined vector. The key is to assume individual quanta adapt to their context and always switch to the net state, instead of moving in several directions at the same time. Existing observations are compatible with such a scenario. Self-interference is not a verifiable principle, even though it fits the data. In this new approach, formal predictions remain unchanged. Only the interpretation is different.

Ghenadie N. Mardari

2004-12-21T23:59:59.000Z

37

Information Storage in Black Holes  

E-Print Network (OSTI)

The information loss paradox for Schwarzschild black holes is examined, using the ADS/CFT correspondence extended to the $M_6 (4,2)$ bulk. It is found that the only option compatible with the preservation of the quantum unitarity is when a regular remnant region of the black hole survives to the black hole evaporation process, where information can be stored and eventually retrieved.

M. D. Maia

2005-05-23T23:59:59.000Z

38

Love, Sacrifice, and Honor: Warrior Virtues and the American Soldiers Experience of World War II  

E-Print Network (OSTI)

The twentieth century has been called the bloodiest century in human history. In two world wars and various other conflicts spanning across decades, man was more combative than ever before. Yet despite this century of conflict, the combative disposition appears to run contrary to the nature of man. Mingled with stories of the horrors of war, we find reports of heroic warrior virtues: among them love, sacrifice, and honor. To better understand the nature of man as warrior, we must explore the manifest and latent social functions of these warrior virtues in the lives of soldiers. This research examines the theories concerning the nature of man at war and the manifestation of warrior virtues on the battlefront. Through a literature review of war theories in relation to man, as well as first-hand accounts of heroic virtue by American soldiers in World War II, this study presents a generalized picture of the essence of man at war and seeks to provide insight for the future training and health management of soldiers on the battlefield. An examination of nine World War II narratives by American soldiers revealed time and again their reliance upon the warrior virtues of love, sacrifice, and honor to communicate their personal experiences of the war. For each of these men, it was their personal commitment to these virtues that shaped their service and their experience of the war. This dependence upon warrior virtues for explaining their experiences conveys the important social function that such virtues played in their time of service and how-when properly enacted-warrior virtues provided social organization to counter the chaos of war, simultaneously uniting the soldiers to the cultural values of the society from which they came. We stand at the outset of another century which, for our nation especially, has already been marked by a new kind of war-a war on terror. For the safety and well-being of our soldiers, it is imperative that we continue to increase our understanding of the personal and social impacts war has on the individuals who fight them. While this study does not answer all of the questions regarding warrior virtues and the nature of man at war, it examines the life of warriors from both a theoretical and experiential perspective and lays the groundwork for future research.

Williamson, Benjamin K.

2010-05-01T23:59:59.000Z

39

Some remarks on black hole thermodynamics  

E-Print Network (OSTI)

Two thermodynamic "paradoxes" of black hole physics are re-examined. The first is that there is a thermal instability involving two coupled blackbody cavities containing two black holes, and second is that a classical black hole can swallow up entropy in the form of ambient blackbody photons without increasing its mass. The resolution of the second paradox by Bekenstein and by Hawking is re-visited. The link between Hawking radiation and Wigner's superluminal tunneling time is discussed using two equivalent Feynman diagrams, and Feynman's re-interpretation principle.

R. Y. Chiao

2010-12-27T23:59:59.000Z

40

Black holes and beyond  

SciTech Connect

The black hole information paradox forces us into a strange situation: we must find a way to break the semiclassical approximation in a domain where no quantum gravity effects would normally be expected. Traditional quantizations of gravity do not exhibit any such breakdown, and this forces us into a difficult corner: either we must give up quantum mechanics or we must accept the existence of troublesome 'remnants'. In string theory, however, the fundamental quanta are extended objects, and it turns out that the bound states of such objects acquire a size that grows with the number of quanta in the bound state. The interior of the black hole gets completely altered to a 'fuzzball' structure, and information is able to escape in radiation from the hole. The semiclassical approximation can break at macroscopic scales due to the large entropy of the hole: the measure in the path integral competes with the classical action, instead of giving a subleading correction. Putting this picture of black hole microstates together with ideas about entangled states leads to a natural set of conjectures on many long-standing questions in gravity: the significance of Rindler and de Sitter entropies, the notion of black hole complementarity, and the fate of an observer falling into a black hole. - Highlights: Black-Right-Pointing-Pointer The information paradox is a serious problem. Black-Right-Pointing-Pointer To solve it we need to find 'hair' on black holes. Black-Right-Pointing-Pointer In string theory we find 'hair' by the fuzzball construction. Black-Right-Pointing-Pointer Fuzzballs help to resolve many other issues in gravity.

Mathur, Samir D., E-mail: mathur.16@osu.edu

2012-11-15T23:59:59.000Z

Note: This page contains sample records for the topic "black warrior paradox" 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

Information Loss Paradox Tested on Chiral Fermion Coupled to a Background Dilatonic Field  

E-Print Network (OSTI)

A model where chiral boson is coupled to a background dilatonic field is considered to study the s-wave scattering of fermion by a back ground dilatonic black hole. Unlike the conclusion drawn in \\cite{MIT} it is found that the presence of chiral fermion does not violate unitarity and information remains preserved. Regularization plays a crucial role on the information paradox.

Anisur Rahaman

2006-07-24T23:59:59.000Z

42

Are Black Holes Elementary Particles?  

E-Print Network (OSTI)

Quantum black holes are the smallest and heaviest conceivable elementary particles. They have a microscopic size but a macroscopic mass. Several fundamental types have been constructed with some remarkable properties. Quantum black holes in the neighborhood of the Galaxy could resolve the paradox of ultra-high energy cosmic rays detected in Earths atmosphere. They may also play a role as dark matter in cosmology. 1 1

Yuan K. Ha

2009-01-01T23:59:59.000Z

43

On the pattern of black hole information release  

E-Print Network (OSTI)

We propose a step towards a resolution to black hole information paradox by analyzing scattering amplitudes of a complex scalar field around a Schwarzschild black hole. The scattering cross section reveals much information on the incoming state but exhibits flux loss at the same time. The flux loss should be temporary, and indicate mass growth of the black hole. The black hole should Hawking-radiate subsequently, thereby, compensating for the flux loss. We comment on the possibility that information bleaching may be the key to the paradox.

I. Y. Park

2013-01-27T23:59:59.000Z

44

Biofuel Policies and the Green Paradox.  

E-Print Network (OSTI)

??This paper attempts to identify whether or not the green paradox is withheld when renewable fuel standards and blending mandate policies implemented by the U.S. (more)

Potter, Emily Spooner

2011-01-01T23:59:59.000Z

45

On the pattern of black hole information release  

E-Print Network (OSTI)

We propose a resolution to black hole information paradox by analyzing scattering amplitudes of a complex scalar field around a Schwarzschild black hole. The scattering cross section reveals much information on the incoming state but exhibits flux loss at the same time. The flux loss should be temporary, and indicate mass growth of the black hole. The black hole should Hawking-radiate subsequently, thereby, compensating for the flux loss.

Park, I Y

2013-01-01T23:59:59.000Z

46

"Information Paradox" and Schwarzschildian geodesics  

E-Print Network (OSTI)

We show that the "Information Paradox" follows from inappropriate considerations on the geodesics of a Schwarzschildian manifold created by a gravitating point-mass. In particular, we demonstrate that the geometric differential equation which gives the radial coordinate as a function of the angular coordinate of the geodesics does not represent fully all the consequences following from the metric tensor. We remark that: i) it does not yield the conditions characterizing the circular orbits; (this fact has been ignored in the previous literature); ii) it "neglects" the space region in which the radial coordinate is minor or equal to twice the mass of the gravitating point (in suitable units of measure).

A. Loinger; T. Marsico

2013-04-15T23:59:59.000Z

47

Quantum Information Paradox: Real or Fictitious?  

E-Print Network (OSTI)

One of the outstanding puzzles of theoretical physics is whether quantum information indeed gets lost in the case of Black Hole (BH) evaporation or accretion. Let us recall that Quantum Mechanics (QM) demands an upper limit on the acceleration of a test particle. On the other hand, it is pointed out here that, if a Schwarzschild BH would exist, the acceleration of the test particle would blow up at the event horizon in violation of QM. Thus the concept of an exact BH is in contradiction of QM and quantum gravity (QG). It is also reminded that the mass of a BH actually appears as an INTEGRATION CONSTANT of Einstein equations. And it has been shown that the value of this integration constant is actually zero. Thus even classically, there cannot be finite mass BHs though zero mass BH is allowed. It has been further shown that during continued gravitational collapse, radiation emanating from the contracting object gets trapped within it by the runaway gravitational field. As a consequence, the contracting body attains a quasi-static state where outward trapped radiation pressure gets balanced by inward gravitational pull and the ideal classical BH state is never formed in a finite proper time. In other words, continued gravitational collapse results in an "Eternally Collapsing Object" which is a ball of hot plasma and which is asymptotically approaching the true BH state with M=0 after radiating away its entire mass energy. And if we include QM, this contraction must halt at a radius suggested by highest QM acceleration. In any case no EH is ever formed and in reality, there is no quantum information paradox.

Abhas Mitra

2009-11-18T23:59:59.000Z

48

Quantum Black Holes As Elementary Particles  

E-Print Network (OSTI)

Are black holes elementary particles? Are they fermions or bosons? We investigate the remarkable possibility that quantum black holes are the smallest and heaviest elementary particles. We are able to construct various fundamental quantum black holes: the spin-0, spin-1/2, spin-1, and the Planckcharge cases, using the results in general relativity. Quantum black holes in the neighborhood of the Galaxy could resolve the paradox posed by the Greisen-Zatsepin-Kuzmin limit on the energy of cosmic rays from distant sources. They could also play a role as dark matter in cosmology.

Yuan K. Ha

2008-01-01T23:59:59.000Z

49

Errors and paradoxes in quantum mechanics  

E-Print Network (OSTI)

Errors and paradoxes in quantum mechanics, entry in the Compendium of Quantum Physics: Concepts, Experiments, History and Philosophy, ed. F. Weinert, K. Hentschel, D. Greenberger and B. Falkenburg (Springer), to appear

D. Rohrlich

2007-08-28T23:59:59.000Z

50

Gibbs Paradox and Similarity Principle  

E-Print Network (OSTI)

As no heat effect and mechanical work are observed, we have a simple experimental resolution of the Gibbs paradox: both the thermodynamic entropy of mixing and the Gibbs free energy change are zero during the formation of any ideal mixtures. Information loss is the driving force of these spontaneous processes. Information is defined as the amount of the compressed data. Information losses due to dynamic motion and static symmetric structure formation are defined as two kinds of entropies - dynamic entropy and static entropy, respectively. There are three laws of information theory, where the first and the second laws are analogs of the two thermodynamic laws. However, the third law of information theory is different: for a solid structure of perfect symmetry (e.g., a perfect crystal), the entropy (static entropy for solid state) S is the maximum. More generally, a similarity principle is set up: if all the other conditions remain constant, the higher the similarity among the components is, the higher the value of entropy of the mixture (for fluid phases) or the assemblage (for a static structure or a system of condensed phases) or any other structure (such as quantum states in quantum mechanics) will be, the more stable the mixture or the assemblage will be, and the more spontaneous the process leading to such a mixture or an assemblage or a chemical bond will be.

Shu-Kun Lin

2008-07-28T23:59:59.000Z

51

Evidence Against Klein Paradox in Graphene  

E-Print Network (OSTI)

It is demonstrated that both transmission and reflection coefficients associated to the Klein paradox at a step barrier are positive and less than unity, so that the particle-antiparticle pair creation mechanism commonly linked to this phenomenon is not necessary. Because graphene is a solid-state testing ground for quantum electrodynamics phenomena involving massless Dirac fermions we suggest that the transport characteristic through a p-n graphene junction can decide between the results obtained in this paper and the common Klein paradox theory, which imply negative transmission and higher-than-unity reflection coefficients. Recent experimental evidence supports our findings.

Daniela Dragoman

2007-01-13T23:59:59.000Z

52

Compliance Monitoring of Underwater Blasting for Rock Removal at Warrior Point, Columbia River Channel Improvement Project, 2009/2010  

Science Conference Proceedings (OSTI)

The U.S. Army Corps of Engineers, Portland District (USACE) conducted the 20-year Columbia River Channel Improvement Project (CRCIP) to deepen the navigation channel between Portland, Oregon, and the Pacific Ocean to allow transit of fully loaded Panamax ships (100 ft wide, 600 to 700 ft long, and draft 45 to 50 ft). In the vicinity of Warrior Point, between river miles (RM) 87 and 88 near St. Helens, Oregon, the USACE conducted underwater blasting and dredging to remove 300,000 yd3 of a basalt rock formation to reach a depth of 44 ft in the Columbia River navigation channel. The purpose of this report is to document methods and results of the compliance monitoring study for the blasting project at Warrior Point in the Columbia River.

Carlson, Thomas J.; Johnson, Gary E.; Woodley, Christa M.; Skalski, J. R.; Seaburg, Adam

2011-05-10T23:59:59.000Z

53

Quantum, Photo-Electric Single Capacitor Paradox  

E-Print Network (OSTI)

In this work single capacitor paradox (a variation of the remarkable two capacitor paradox) is considered in a new, quantum discrete form. Simply speaking we consider well-known usual, photoelectric effect experimental device, i.e. photo electric cell, where cathode and anode are equivalently charged but non-connected. It, obviously, represents a capacitor that initially, i.e. before action of the photons with individual energy equivalent to work function, holds corresponding energy of the electrical fields between cathode and anode. Further, we direct quantum discretely photons, one by one, toward cathode where according to photo-electrical effect electrons discretely, one by one, will be emitted and directed toward anode. It causes discrete discharge of the cell, i.e. capacitor and discrete decrease of the electrical field. Finally, total discharge of the cell, i.e. capacitor, and total disappearance of the electrical field and its energy will occur. Given, seemingly paradoxical, capacitor total energy loss can be simply explained without any dissipative effects (Joule heating or electromagnetic waves emission can be neglected as high order small corrections) by work done by the electrical field by movement of the electrons from cathode to anode. (Remarkable two capacitors paradox can be, obviously, formulated and explained in the completely analogous way.)

Darko Kapor; Vladan Pankovic

2009-12-10T23:59:59.000Z

54

Quantum Mechanics: Structures, Axioms and Paradoxes  

E-Print Network (OSTI)

Quantum Mechanics: Structures, Axioms and Paradoxes Diederik Aerts Center Leo Apostel, Brussels present an analysis of quantum mechanics and its problems and para- doxes taking into account the results that have been obtained during the last two decades by investigations in the field of `quantum structures re

Aerts, Diederik

55

BLACK ISSUES  

E-Print Network (OSTI)

BLACK ISSUES :: Your Portal To Diversity :: ::::::::::::::::::::::::::: http transactions in recent years include Viacom's acquisition of Black Entertainment Television, NBC's purchase Bookshelf Events Tech Briefs - more - #12;BLACK ISSUES :: Your Portal To Diversity

Valero-Cuevas, Francisco

56

Del Black  

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

Del Black Del Black dblack.jpg Del C. Black HPC Technician, Operations Technology Group, DCBlack@lbl.gov Phone: (510) 486-6821 , Fax: (510) 486-4316 1 Cyclotron Road Mail Stop...

57

Black Funnels  

E-Print Network (OSTI)

The Hartle-Hawking state of $\\mathcal{N}=4$ SYM at strong coupling and large $N$ on a fixed black hole background has two proposed gravitational duals: a black funnel or a black droplet. We construct the black funnel solutions that are dual to the Hartle-Hawking state on a Schwarzschild black hole and on a class of three-dimensional asymptotically flat black hole backgrounds. We compute their holographic stress tensor and argue for the stability of these solutions.

Santos, Jorge E

2012-01-01T23:59:59.000Z

58

Black Funnels  

E-Print Network (OSTI)

The Hartle-Hawking state of $\\mathcal{N}=4$ SYM at strong coupling and large $N$ on a fixed black hole background has two proposed gravitational duals: a black funnel or a black droplet. We construct the black funnel solutions that are dual to the Hartle-Hawking state on a Schwarzschild black hole and on a class of three-dimensional asymptotically flat black hole backgrounds. We compute their holographic stress tensor and argue for the stability of these solutions.

Jorge E. Santos; Benson Way

2012-08-30T23:59:59.000Z

59

Douglas Black  

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

R. Black Doug Black Indoor Environment Group Demand Response Research Center (DRRC) Lawrence Berkeley National Laboratory 1 Cyclotron Road MS 90-3058 Berkeley CA 94720 Office...

60

Black Hole Evaporation as a Nonequilibrium Process  

E-Print Network (OSTI)

When a black hole evaporates, there arises a net energy flow from the black hole into its outside environment due to the Hawking radiation and the energy accretion onto black hole. Exactly speaking, due to the net energy flow, the black hole evaporation is a nonequilibrium process. To study details of evaporation process, nonequilibrium effects of the net energy flow should be taken into account. In this article we simplify the situation so that the Hawking radiation consists of non-self-interacting massless matter fields and also the energy accretion onto the black hole consists of the same fields. Then we find that the nonequilibrium nature of black hole evaporation is described by a nonequilibrium state of that field, and we formulate nonequilibrium thermodynamics of non-self-interacting massless fields. By applying it to black hole evaporation, followings are shown: (1) Nonequilibrium effects of the energy flow tends to accelerate the black hole evaporation, and, consequently, a specific nonequilibrium phenomenon of semi-classical black hole evaporation is suggested. Furthermore a suggestion about the end state of quantum size black hole evaporation is proposed in the context of information loss paradox. (2) Negative heat capacity of black hole is the physical essence of the generalized second law of black hole thermodynamics, and self-entropy production inside the matter around black hole is not necessary to ensure the generalized second law. Furthermore a lower bound for total entropy at the end of black hole evaporation is given. A relation of the lower bound with the so-called covariant entropy bound conjecture is interesting but left as an open issue.

Hiromi Saida

2008-11-11T23:59:59.000Z

Note: This page contains sample records for the topic "black warrior paradox" 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

Black Genetics  

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

Black Genetics Name: Andrea Location: NA Country: NA Date: NA Question: Why does the child of a blonde haired woman and a dark haired man usually have dark hair. Also, why does...

62

Steve Black  

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

Black Lawrence Berkeley National Laboratory This speaker was a visiting speaker who delivered a talk or talks on the date(s) shown at the links below. This speaker is not otherwise...

63

Black mothers.  

E-Print Network (OSTI)

??This study is about how a group of professional, middle-aged Black1 women, between the ages of 50 and 55, define motherhood. It explores their self-definitions (more)

Jenkins, Nina Lyon

2005-01-01T23:59:59.000Z

64

ARM - Black Forest News  

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

GermanyBlack Forest News Black Forest Deployment AMF Home Black Forest Home Data Plots and Baseline Instruments CERA COPS Data University of Hohenheim COPS Website COPS Update,...

65

Black Hole Firewalls Require Huge Energy of Measurement  

E-Print Network (OSTI)

The unitary moving mirror model is one of the best quantum systems for checking the reasoning of the firewall paradox in quantum black holes. Though the late-time part of radiations emitted from the mirror is fully entangled with the early-part, no AMPS's firewall exists with a deadly, huge average energy flux in this model. This is because high-energy entanglement structure of the discretized systems in almost maximally entangled states is modified so as to yield the correct description of low-energy effective field theory. Due to the Reeh-Schlieder theorem in quantum field theory, another firewall paradox is inevitably raised with quantum remote measurements in the model. We resolve this paradox from the viewpoint of the energy cost of measurements. No firewall appears, as long as the energy for the measurement is much smaller than the ultraviolet cutoff scale. Furthermore, the strong subadditivity paradox of firewalls is resolved using non-locality of general one-particle states and zero-point fluctuation entanglement.

Masahiro Hotta; Jiro Matsumoto; Ken Funo

2013-06-21T23:59:59.000Z

66

The IT productivity paradox revisited: technological determinism masked by management method?  

Science Conference Proceedings (OSTI)

The productivity paradox in information technology is that investment in IT does not seem to be reflected in increased productivity. There is a host of possible explanations, but little consensus on which are responsible, or even on whether the paradox ... Keywords: information technology, management method, productivity paradox

Stuart Macdonald

2002-07-01T23:59:59.000Z

67

Black ring deconstruction  

E-Print Network (OSTI)

rotating black holes from 5d black rings, hep-th/0504125. [fuzzball proposal for black holes: An elementary review,The quantum structure of black holes, hep-th/0510180. [5

Gimon, Eric G.

2008-01-01T23:59:59.000Z

68

A paradox about an atom and a photon  

E-Print Network (OSTI)

In this article we propose a new relativistic paradox concerning the absorption of a photon by a hydrogen atom. We show that the actual cause of the paradox is one of the hypotheses of Bohr model; therefore, in order to solve the paradox, we have to move away from Bohr model. Our analysis is carried out only in the special relativistic framework, so we are not interested in giving a full quantum mechanical treatment of the problem. We derive some expressions for emission and absorption of photons by atoms, which are in perfect agreement with special relativity, although comparable to the classical Bohr formula with an excellent degree of approximation. Quite interestingly, these expressions are no more invariant under a global shift of energy levels, showing a breaking of classical "gauge invariance" of energy. We stress that, to the best of our knowledge, the present approach has never been considered in literature. At the end we will be able to solve the proposed paradox.

Carlo Maria Scandolo

2013-10-12T23:59:59.000Z

69

A Quantum Cognition Analysis of the Ellsberg Paradox  

E-Print Network (OSTI)

The 'expected utility hypothesis' is one of the foundations of classical approaches to economics and decision theory and Savage's 'Sure-Thing Principle' is a fundamental element of it. It has been put forward that real-life situations exist, illustrated by the 'Allais' and 'Ellsberg paradoxes', in which the Sure-Thing Principle is violated, and where also the expected utility hypothesis does not hold. We have recently presented strong arguments for the presence of a double layer structure, a 'classical logical' and a 'quantum conceptual', in human thought and that the quantum conceptual mode is responsible of the above violation. We consider in this paper the Ellsberg paradox, perform an experiment with real test subjects on the situation considered by Ellsberg, and use the collected data to elaborate a model for the conceptual landscape surrounding the decision situation of the paradox. We show that it is the conceptual landscape which gives rise to a violation of the Sure-Thing Principle and leads to the paradoxical situation discovered by Ellsberg.

Diederik Aerts; Bart D'Hooghe; Sandro Sozzo

2011-04-07T23:59:59.000Z

70

Research Report Black 1 White 5 Black  

E-Print Network (OSTI)

Research Report Black 1 White 5 Black Hypodescent in Reflexive Categorization of Racially Ambiguous--Historically, the principle of hypodescent specified that individuals with one Black and one White parent should be considered Black. Two experiments ex- amined whether categorizations of racially ambiguous targets reflect

Reber, Paul J.

71

BlackLining Demo BlackLining Demo  

E-Print Network (OSTI)

BlackLining Demo BlackLining Demo BlackLining Demo YOUR PAYCHECKPAYROLL TAXES AND EMPLOYMENT LAW BY SPONSORED BY #12;BlackLining Demo e BlackLining Demo e BlackLining Demo e AMERICAN PAYROLL ASSOCIATION i Design by PRIWORKS.com. Images from Thinkstock.com. #12;BlackLining Demo BlackLining Demo Black

Harms, Kyle E.

72

Black Holes in Higher Dimensions (Black Strings and Black Rings)  

E-Print Network (OSTI)

The main focus of this session was the presentation of new higher-dimensional black hole solutions, including black rings, black strings, and multi black holes, and the study of their properties. Besides new asymptotically flat and locally asymptotically flat black objects also new black holes with anti-de Sitter asymptotics were reported. The studies of their properties included the investigation of their stability, their thermodynamics, their analyticity and their existence. Furthermore, the geodesics in such higher-dimensional space-times were investigated.

Kunz, Jutta

2013-01-01T23:59:59.000Z

73

Black holes 1. Introduction  

E-Print Network (OSTI)

Black holes 1. Introduction What is a black hole? Roughly it can be described as a region that nothing can escape from it. Light falling into a black hole cannot escape from it. It is called `black' because it does not reflect anything. Since nothing can escape from it, it means that a black hole

Glass, Ian S.

74

1-D Dirac Equation, Klein Paradox and Graphene  

E-Print Network (OSTI)

Solutions of the one dimensional Dirac equation with piece-wise constant potentials are presented using standard methods. These solutions show that the Klein Paradox is non-existent and represents a failure to correctly match solutions across a step potential. Consequences of this exact solution are studied for the step potential and a square barrier. Characteristics of massless Dirac states and the momentum linear band energies for Graphene are shown to have quite different current and momentum properties.

S. P. Bowen

2008-07-23T23:59:59.000Z

75

A Quantum Cognition Analysis of the Ellsberg Paradox  

E-Print Network (OSTI)

The 'expected utility hypothesis' is one of the foundations of classical approaches to economics and decision theory and Savage's 'Sure-Thing Principle' is a fundamental element of it. It has been put forward that real-life situations exist, illustrated by the 'Allais' and 'Ellsberg paradoxes', in which the Sure-Thing Principle is violated, and where also the expected utility hypothesis does not hold. We have recently presented strong arguments for the presence of a double layer structure, a 'classical logical' and a 'quantum conceptual', in human thought and that the quantum conceptual mode is responsible of the above violation. We consider in this paper the Ellsberg paradox, perform an experiment with real test subjects on the situation considered by Ellsberg, and use the collected data to elaborate a model for the conceptual landscape surrounding the decision situation of the paradox. We show that it is the conceptual landscape which gives rise to a violation of the Sure-Thing Principle and leads to the pa...

Aerts, Diederik; Sozzo, Sandro

2011-01-01T23:59:59.000Z

76

Black hole masking and black hole thermodynamics  

E-Print Network (OSTI)

Masking of black holes means that, for given total mass and Hawking temperatures, these data may correspond to either "pure" black hole or a black hole of a lesser mass surrounded by a massive shell. It is shown that there is one-to one correspondence between this phenomenon and thermodynamics of a black hole in a finite size cavity: masking of black holes is possible if and only if there exists at least one locally unstable black hole solution in the corresponding canonical ensemble.

Zaslavskii, Oleg B

2011-01-01T23:59:59.000Z

77

(Black)Largemouth Bass  

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

negra, black bass, huro y otros Netherlands: Florellenbaars Poland: weilkogebowy, bas weilkohebowy Portugal: Black bass, perca americana, perca trucha, boca grande, robal...

78

color: DIVPOP; black: low;  

E-Print Network (OSTI)

color: DIVPOP; black: low; red: middle; green: high. Vesicle dynamcis · Maturation rate comparison black: low DIVPOP red: middle DIVPOP green: high DIVPOP · Quality of vesicles black: low death rate red: master; red: mutants; black: vesicle boundary. Neutral model Step division model Conclusions (1

Utrecht, Universiteit

79

Concentric Black Rings  

E-Print Network (OSTI)

We present new supersymmetric solutions of five-dimensional minimal supergravity that describe concentric black rings with an optional black hole at the common centre. Configurations of two black rings are found which have the same conserved charges as a single rotating black hole; these black rings can have a total horizon area less than, equal to, or greater than the black hole with the same charges. A numerical investigation of these particular black ring solutions suggests that they do not have closed timelike curves.

Jerome P. Gauntlett; Jan B. Gutowski

2004-08-02T23:59:59.000Z

80

Published in Synthese 130 (2002), 279-302. MCKINSEY PARADOXES, RADICAL SCEPTICISM, AND THE  

E-Print Network (OSTI)

1 Published in Synthese 130 (2002), 279-302. MCKINSEY PARADOXES, RADICAL SCEPTICISM literature has been devoted to the so-called `McKinsey' paradox which purports to show that semantic is due to Crispin Wright and Martin Davies. I argue that it fails to meet the challenge posed by McKinsey

Edinburgh, University of

Note: This page contains sample records for the topic "black warrior paradox" 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.


81

TheTheTheThe MysteryMysteryMysteryMystery ofofofof the Black Lakethe Black Lakethe Black Lakethe Black Lake  

E-Print Network (OSTI)

TheTheTheThe MysteryMysteryMysteryMystery ofofofof the Black Lakethe Black Lakethe Black Lakethe Black Lake Manuel AlfonsecaManuel AlfonsecaManuel AlfonsecaManuel Alfonseca #12;Manuel Alfonseca 2 #12;The Mystery of the Black Lake 3 The Mystery of the Black LakeThe Mystery of the Black LakeThe Mystery

Alfonseca, Manuel

82

Brane World Black Rings  

E-Print Network (OSTI)

Five dimensional neutral rotating black rings are described from a Randall-Sundrum brane world perspective in the bulk black string framework. To this end we consider a rotating black string extension of a five dimensional black ring into the bulk of a six dimensional Randall-Sundrum brane world with a single four brane. The bulk solution intercepts the four brane in a five dimensional black ring with the usual curvature singularity on the brane. The bulk geodesics restricted to the plane of rotation of the black ring are constructed and their projections on the four brane match with the usual black ring geodesics restricted to the same plane. The asymptotic nature of the bulk geodesics are elucidated with reference to a bulk singularity at the AdS horizon. We further discuss the description of a brane world black ring as a limit of a boosted bulk black 2 brane with periodic identification.

Anurag Sahay; Gautam Sengupta

2007-04-09T23:59:59.000Z

83

Black Hole Horizons and Black Hole Thermodynamics.  

E-Print Network (OSTI)

??This work investigates how black holes can be described in terms of different definitions of horizons. Global definitions in terms of event horizons and Killing (more)

Nielsen, Alex

2007-01-01T23:59:59.000Z

84

Black String Flow  

E-Print Network (OSTI)

We give an exact description of the steady flow of a black string into a planar horizon. The event horizon is out of equilibrium and provides a simple, exact instance of a `flowing black funnel' in any dimension D>=5. It is also an approximation to a smooth intersection between a black string and a black hole, in the limit in which the black hole is much larger than the black string thickness. The construction extends easily to more general flows, in particular charged flows.

Emparan, Roberto

2013-01-01T23:59:59.000Z

85

Black and White Sight  

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

Black and White Sight Name: Andy Location: NA Country: NA Date: NA Question: Why do some animals see in black and White? Replies: In the animal kingdom, sight is accomplished by...

86

Kolmogorov Complexity, String Information, Panspermia and the Fermi Paradox  

E-Print Network (OSTI)

Bit strings rather than byte files can be a mode of transmission both for intelligent signals and for travels of extraterrestrial life. Kolmogorov complexity, i.e. the minimal length of a binary coded string completely defining a system, can then, due to its universality, become a key concept in the strategy of the search of extraterrestrials. Evaluating, for illustration, the Kolmogorov complexity of the human genome, one comes to an unexpected conclusion that a low complexity compressed string - analog of Noah's ark - will enable the recovery of the totality of terrestrial life. The recognition of bit strings of various complexity up to incompressible Martin-L\\"{o}f random sequences, will require a different strategy for the analysis of the cosmic signals. The Fermi paradox "Where is Everybody?" can be viewed under in the light of such information panspermia, i.e. a Universe full of traveling life streams.

V. G. Gurzadyan

2005-08-01T23:59:59.000Z

87

ACCRETORBLACK DONOR BLACK  

E-Print Network (OSTI)

FIELD NO FIELD FIELD NO FIELD FIELD NO FIELD FIELD NO FIELD FIELD DONOR BLACK STREAM HOLE WIND NEUTRON

88

Quantum Harmonic Black Holes  

E-Print Network (OSTI)

Inspired by the recent conjecture that black holes are condensates (of gravitons), we investigate a simple model for the black hole degrees of freedom that is consistent both from the point of view of Quantum mechanics and of General Relativity. Since the two perspectives should converge for small, Planck size, black holes, we expect our construction is useful for understanding the physics of microscopic, quantum black holes.

Casadio, R

2013-01-01T23:59:59.000Z

89

Black holes without firewalls  

E-Print Network (OSTI)

The postulates of black hole complementarity do not imply a firewall for infalling observers at a black hole horizon. The dynamics of the stretched horizon, that scrambles and re-emits information, determines whether infalling observers experience anything out of the ordinary when entering a large black hole. In particular, there is no firewall if the stretched horizon degrees of freedom retain information for a time of order the black hole scrambling time.

Larjo, Klaus; Thorlacius, Larus

2013-01-01T23:59:59.000Z

90

Publications Salmonid Broodstock, Black  

E-Print Network (OSTI)

Publications Salmonid Broodstock, Black Cod, and Successful Fishing Piers "Salmon Broodstock Avenue. N.E.. Seattle, WA 98105. "Black Cod, Boom or Bust?", also published by Washington Sea Grant- page paper- bound booklet addresses the location and status of black cod stocks. harvest methods

91

Furnace Black Characterization  

E-Print Network (OSTI)

Furnace Black Characterization Sid Richardson Carbon Co Fort Worth, TX Dr. Michel Gerspacher #12 of Crystallographic Studies #12;005F7 Methodologies #12;005F8 Summary · For all furnace carbon black 12? Surface Unorganized Carbon Identified #12;005F11 SRCC's Model #12;005F12 Carbon Black Surface Activity

92

Nonstationary artificial black holes  

E-Print Network (OSTI)

We study the existence of artificial non-stationary spherically symmetric black holes. We give examples of the appearance of black holes and of disappearance of white holes. We also discuss the relation between the apparent and the event horizons for the case of artificial black holes.

Eskin, Gregory

2013-01-01T23:59:59.000Z

93

Phantom Black Holes  

E-Print Network (OSTI)

The exact solutions of electrically charged phantom black holes with the cosmological constant are constructed. They are labelled by the mass, the electrical charge, the cosmological constant and the coupling constant between the phantom and the Maxwell field. It is found that the phantom has important consequences on the properties of black holes. In particular, the extremal charged phantom black holes can never be achieved and so the third law of thermodynamics for black holes still holds. The cosmological aspects of the phantom black hole and phantom field are also briefly discussed.

C. J. Gao; S. N. Zhang

2006-04-17T23:59:59.000Z

94

RHIC | Black Holes?  

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

Black Holes at RHIC? Black Holes at RHIC? Further discussion by Physicist Dmitri Kharzeev on why RHIC cannot produce a real gravitational black hole Black holes are among the most mysterious objects in the universe. The gravitational field of a black hole is so strong that Einstein's general relativity tells us that nothing, not even light, can escape from the black hole's interior. However, in 1974 physicist Stephen Hawking demonstrated that black holes must emit radiation once the quantum effects are included. According to quantum mechanics, the physical vacuum is bubbling with short-lived virtual particle-antiparticle pairs. Creation of a particle-antiparticle pair from the vacuum conflicts with energy conservation, but energy need not be conserved at short times in quantum mechanics, according to Heisenberg's

95

"Black Star" or Astrophysical Black Hole? K. Petrovay  

E-Print Network (OSTI)

"Black Star" or Astrophysical Black Hole? K. Petrovay Eötvös University, Department of Astronomy. Recently wide publicity has been given to a claim by T. Vachaspati that "black holes do not exist", that the objects known as black holes in astrophysics should rather be called "black stars" and they not only do

Petrovay, Kristóf

96

Thousand Cankers of Black Walnut  

E-Print Network (OSTI)

Thousand Cankers Disease of Black Walnut How to Identify and Prevent the Spread of Thousand Cankers counties. Remember: Only YOU can help prevent the spread of thousand cankers disease! Black Walnuts Facts Native range of black walnut in the United States. Uses of Black Walnut Mature black walnuts grown

97

A Black Hole Levitron  

E-Print Network (OSTI)

We study the problem of spatially stabilising four dimensional extremal black holes in background electric/magnetic fields. Whilst looking for stationary stable solutions describing black holes kept in external fields we find that taking a continuum limit of Denef et al's multi-center solutions provides a supergravity description of such backgrounds within which a black hole can be trapped in a given volume. This is realised by levitating a black hole over a magnetic dipole base. We comment on how such a construction resembles a mechanical Levitron.

Xerxes D. Arsiwalla; Erik P. Verlinde

2009-02-02T23:59:59.000Z

98

Black Dwarf Black Dwarf Black Dwarf Dark core of a low mass star left when  

E-Print Network (OSTI)

Black Dwarf Black Dwarf Black Dwarf Dark core of a low mass star left when a white dwarf cools. Black dwarfs disappear from view. Mass: 0.5 - 1.4 SM StarPower Points: 1 Dark core of a low mass star left when a white dwarf cools. Black dwarfs, like the charcoal briquette pictured in the sky, are made

Bechtold, Jill

99

Black Hole Mergers Manuela Campanelli  

E-Print Network (OSTI)

Black Hole Mergers Manuela Campanelli Center for Computa6 Department of Physics Duke University Feb 15-17, 2012 #12;Black Holes Antennae galaxies, op6cal, HST · In General Rela6vity (GR), Black Holes (BHs

Wolpert, Robert L

100

Stationary Black Holes Robert Beig*  

E-Print Network (OSTI)

Stationary Black Holes Robert Beig Abstract We review the theory of stationary black hole solutions of vacuum Einstein equations. Keywords: black holes, event horizons, Schwarzschild metric, Kerr metric, no-hair theorems 1

Chru?ciel, Piotr T.

Note: This page contains sample records for the topic "black warrior paradox" 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

Rotating Hairy Black Holes  

E-Print Network (OSTI)

We construct stationary black holes in SU(2) Einstein-Yang-Mills theory, which carry angular momentum and electric charge. Possessing non-trivial non-abelian magnetic fields outside their regular event horizon, they represent non-perturbative rotating hairy black holes.

B. Kleihaus; J. Kunz

2000-12-20T23:59:59.000Z

102

Black Hole Shadows of Charged Spinning Black Holes  

E-Print Network (OSTI)

We propose a method for measuring the black hole charge by imaging a black hole shadow in a galactic center by future interferometers. Even when the black hole is uncharged, it is possible to confirm the charge neutrality by this method. We first derive the analytic formulae of the black hole shadow in an optically thin medium around a charged spinning black hole, and then investigate how contours of the black hole shadow depend on the spin and the charge of the black hole for several inclination angles between the rotation axis of the black hole and the observer. This method only assumes stationary black hole and general relativity. By fitting the formula of the contours of the shadow to the observed image of the shadow, in addition to the black hole charge, one can also determine the black hole spin and the inclination angle without any degeneracy among the charge, the spin, and the inclination angle unless the inclination angle is null.

Rohta Takahashi

2005-05-16T23:59:59.000Z

103

THE RELATIONSHIP OF BLACK POWER AND BLACK ARTS/CONSCIUSNESS MOVEMENTS TO THE BLACK STUDIES MOVEMENT .  

E-Print Network (OSTI)

??This thesis is an examination of three social movements that occurred during the 1960s and 1970s: the Black Power Movement, Black Arts/Consciousness Movement, and Black (more)

Woods, Benjamin

2008-01-01T23:59:59.000Z

104

Lumens Placard (Black) | Department of Energy  

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

lumensplacard-black.eps More Documents & Publications Lumens Placard (Black) Lumens Placard (Green) Energy Savers Guide...

105

Black holes at accelerators.  

E-Print Network (OSTI)

collision of high-energy particles, Phys. Rev. D 67, 024009 (2003) [arXiv:gr-qc/0209003]. [6] D. M. Eardley and S. B. Giddings, Classical black hole production in high-energy collisions, Phys. Rev. D 66, 044011 (2002) [arXiv:gr-qc/0201034]. [7] H. Yoshino... about black hole formation in high-energy collisions, Class. Quant. Grav. 22, L61 (2005) [arXiv:hep-ph/0505125]. [16] G. T. Horowitz, Higher dimensional generalizations of the Kerr black hole, arXiv:gr-qc/0507080. [17] C. M. Harris and P. Kanti...

Webber, Bryan R

106

American Black Bear: Ursus americanus  

E-Print Network (OSTI)

3/21/2011 1 USFWS American Black Bear: Ursus americanus www.bear.org LDWF Historic Distribution, forested regions (Pelton et al. 1994) Glacier Kenai Queen Charlotte Island. Kermode Dall American Black regions (Pelton et al. 1994) #12;3/21/2011 2 Historic Range Louisiana black bear Louisiana Black Bear

Gray, Matthew

107

Stationary Black Holes Robert Beig #  

E-Print Network (OSTI)

Stationary Black Holes Robert Beig # Piotr T. Chru?sciel + February 8, 2005 Abstract We review the theory of stationary black hole solutions of vacuum Einstein equations. Keywords: black holes, event. this space­time a natural model for a non­rotating black hole. We can now come back to the problem

Chru?ciel, Piotr T.

108

Physics of AGN Black Holes  

E-Print Network (OSTI)

Physics of AGN Black Holes Heino Falcke MPIfR Bonn Contents: ffl Why Black Holes? ffl What are black holes? ffl Luminosity ffl Observational Evidence Literature: ``An Introduction to Active Galactic. #12; Black Hole Paradigm Not really hollow For typical quasar luminosity of L = 10 46 L 46 erg sec

Falcke, Heino

109

Black Box Checking Doron Peled  

E-Print Network (OSTI)

Black Box Checking Doron Peled The University of Texas at Austin Department of Electrical and formalize this problem of black box checking and suggest several algorithms. Since the input to black box the given property. We call this problem black box checking. To simplify the discussion, we will not deal

Peled, Doron A.

110

Stationary Black Holes Robert Beig  

E-Print Network (OSTI)

Stationary Black Holes Robert Beig Piotr T. Chru´sciel February 8, 2005 Abstract We review the theory of stationary black hole solutions of vacuum Einstein equations. Keywords: black holes, event-Szekeres extension of the Schwarzschild solution. this space-time a natural model for a non-rotating black hole. We

Chru?ciel, Piotr T.

111

BLACK HISTORY @ Your Education Library  

E-Print Network (OSTI)

BLACK HISTORY @ Your Education Library Focus on Canadian Resources: Songs Granfield, Linda. Illus, Rella. Solme Black Women: Profiles of Black Women in Canada. Sister Vision, 1993. FC106.B6B73 1993 Bramble, Linda. Black Fugitive Slaves in Early Canada. Vanwell, 1987. Juv E450.B73 1987 Carter, Velma

Ellis, Randy

112

RHIC | Black Holes?  

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

Black Holes at RHIC? Black Holes at RHIC? Before RHIC began operations in 2000, some were concerned that it would produce black holes that would threaten the earth. Here's why those concerns were unfounded. Committee Review of Speculative "Disaster Scenarios" at RHIC In July 1999, Brookhaven Lab Director John Marburger convened a committee of distinguished physicists to write a comprehensive report on the arguments that address the safety of speculative disaster scenarios at RHIC. The scenarios are: Creation of a black hole that would "eat" ordinary matter. Initiation of a transition to a new, more stable universe. Formation of a "strangelet" that would convert ordinary matter to a new form. jaffee "We conclude that there are no credible mechanisms for catastrophic

113

The Black Bear  

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

Black Bear Black Bear Nature Bulletin No. 286-A December 9, 1967 Forest Preserve District of Cook County Richard B. Ogilvie, President Roland F. Eisenbeis, Supt. of Conservation THE BLACK BEAR The most amusing and human-like of all our American wild animals is the Black Bear. Slow, clumsy and loose-jointed in appearance, with a shambling gait, he can be very swift and nimble. Like any good clown he is also a good acrobat with a fine sense of balance and timing. He is a great climber in spite of his bulk. Shrewd and droll, he is very popular in menageries and as a performer in circuses and side shows because he learns tricks easily. He can stand on his hind legs to wrestle, box, dance, or beg for food and, occasionally, one becomes a graceful artist on roller skates. They love applause.

114

Northern Black Widows  

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

Northern Black Widows Name: Matt Location: NA Country: NA Date: NA Question: I live in Fairbanks, Alaska and came across a spider that I've never seen before. It is about 1.5 cm...

115

Black suit with a white, button down, collared dress shirt and conservative tie Black socks and black shoes  

E-Print Network (OSTI)

Dress Code Men · Black suit with a white, button down, collared dress shirt and conservative tie · Black socks and black shoes Women · Black dress, black suit pant or skirt (dress or skirt must be at or below the knee) · Black hose (without pattern) and black dress shoes MSC OPAS provides: · A volunteer

Boas, Harold P.

116

Black Saturn with dipole ring  

E-Print Network (OSTI)

We present a new stationary, asymptotically flat solution of 5D Einstein-Maxwell gravity describing a Saturn-like black object: a rotating black hole surrounded by a rotating dipole black ring. The solution is generated by combining the vacuum black Saturn solution and the vacuum black ring solution with appropriately chosen parameters. Some basic properties of the solution are analyzed and the basic quantities are calculated.

Stoytcho Yazadjiev

2007-05-13T23:59:59.000Z

117

Focusing of weak shock waves and the von Neumann paradox of oblique shock reflection  

E-Print Network (OSTI)

Focusing of weak shock waves and the von Neumann paradox of oblique shock reflection Esteban G of weak shock waves at small angles are considered: the focusing of curved fronts at a&es, the transition between regular and irregular reflection of oblique shock waves on rigid walls and the diffraction

Tabak, Esteban G.

118

On the paradox of pesticides Y. Charles Li and Yipeng Yang  

E-Print Network (OSTI)

on the leaves not sprayed with the pesticides remain low (below the crop's economic thresholds]. In the experiment of [7] [3], pesticide effects on arthropods in the rice field are studied. There are four groups- specific relationship and the intraspecific density effect. To avoid the paradox of pesticides, farmers can

Li, Charles

119

Thermodynamic black di-rings  

E-Print Network (OSTI)

Previously the five dimensional $S^1$-rotating black rings have been superposed in concentric way by some solitonic methods and regular systems of two $S^1$-rotating black rings were constructed by the authors and then Evslin and Krishnan (we called these solutions black di-rings). In this place we show some characteristics of the solutions of five dimensional black di-rings, especially in thermodynamic equilibrium. After the summary of the di-ring expressions and their physical quantities, first we comment on the equivalence of the two different solution-sets of the black di-rings. Then the existence of thermodynamic black di-rings are shown, in which both iso-thermality and iso-rotation between the inner black ring and the outer black ring are realized. We also give detailed analysis of peculiar properties of the thermodynamic black di-ring including discussion about a certain kind of thermodynamic stability (instability) of the system.

Iguchi, Hideo

2010-01-01T23:59:59.000Z

120

Thermodynamic black di-rings  

SciTech Connect

Previously the five dimensional S{sup 1}-rotating black rings have been superposed in a concentric way by some solitonic methods, and regular systems of two S{sup 1}-rotating black rings were constructed by the authors and then Evslin and Krishnan (we called these solutions 'black di-rings'). In this place we show some characteristics of the solutions of five dimensional black di-rings, especially in thermodynamic equilibrium. After the summary of the di-ring expressions and their physical quantities, first we comment on the equivalence of the two different solution sets of the black di-rings. Then the existence of thermodynamic black di-rings is shown, in which both isothermality and isorotation between the inner black ring and the outer black ring are realized. We also give detailed analysis of peculiar properties of the thermodynamic black di-ring including discussion about a certain kind of thermodynamic stability (instability) of the system.

Iguchi, Hideo; Mishima, Takashi [Laboratory of Physics, College of Science and Technology, Nihon University, Narashinodai, Funabashi, Chiba 274-8501 (Japan)

2010-10-15T23:59:59.000Z

Note: This page contains sample records for the topic "black warrior paradox" 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

Black Hole Shadows of Charged Spinning Black Holes  

E-Print Network (OSTI)

We propose a method for measuring the black hole charge by imaging a black hole shadow in a galactic center by future interferometers. Even when the black hole is uncharged, it is possible to confirm the charge neutrality by this method. We first derive the analytic formulae of the black hole shadow in an optically thin medium around a charged spinning black hole, and then investigate how contours of the black hole shadow depend on the spin and the charge of the black hole for several inclination angles between the rotation axis of the black hole and the observer. This method only assumes stationary black hole and general relativity. By fitting the formula of the contours of the shadow to the observed image of the shadow, in addition to the black hole charge, one can also determine the black hole spin and the inclination angle without any degeneracy among the charge, the spin, and the inclination angle unless the inclination angle is null. If the maximum width of the shadow smaller than 4(1 + 2 1/2)M or the minimum width of the shadow smaller than 9M are measured observationally, we can safely conclude that the black hole is charged. Here, M is the gravitational radius, i.e. the half of the Schwarzschild radius. Key words: black hole physicsGalaxy: nucleusgalaxies: nuclei techniques: high angular resolutiontechniques: interferometric 1.

Rohta Takahashi

2005-01-01T23:59:59.000Z

122

Charged black holes from near extremal black holes  

E-Print Network (OSTI)

We recover the properties of a wide class of far from extremal charged black branes from the properties of near extremal black branes, generalizing the results of Danielsson, Guijosa and Kruczenski.

Gilad Lifschytz

2004-05-06T23:59:59.000Z

123

Furnace Black Characterization  

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

Furnace Black Furnace Black Characterization Sid Richardson Carbon Co Fort Worth, TX Dr. Michel Gerspacher 005F 2 Definitions Particle Aggregate = 20nm to 100nm "Diameter" = 200nm to 1,000nm "Length" = Set of Percolated Aggregates Particle (?) Aggregate Agglomerate Constituents Size = Tech/Scientific Challenge 005F 3 Furnace Process High Temperature Refractory Feedstock Oil Air Natural Gas Reaction Zone Quench 005F 4 Specific Surface Area 005F 5 Structure 3-D Morphology Key Characteristic Summary of Crystallographic Studies 005F 7 Methodologies 005F 8 Summary * For all furnace carbon black 12Å < L C < 17Å * Crystallite L a ≈ 25Å * Amorphous Carbon * No micropores * Very few surface groups (hetero atoms) { 005F 9 Effect of Heat Treatment on Amorphous Carbon

124

Black Hawk Lake Fresno River  

E-Print Network (OSTI)

Black Hawk Lake Fresno River R D 4 0 0 RD 415 HWY41 RD 207 REVISRD YO SEM ITE SP RINGS P KY LILLEY County Rosedale Ranch Revis Mountain Daulton Spring Red Top Lookout Buford Mountain Black Hawk Lake

Wang, Zhi

125

String-Corrected Black Holes  

E-Print Network (OSTI)

for black holes and strings, Phys. Rev. D 55, 6189 (1997) [black holes and elementary string states, Mod. Phys. Lett. A= 2 supergravity and Calabi-Yau string back- grounds, Phys.

Hubeny, Veronika

2009-01-01T23:59:59.000Z

126

Einstein, Black Holes Gravitational Waves  

E-Print Network (OSTI)

1 #12;Einstein, Black Holes and Gravitational Waves Gregory B. Cook Wake Forest University 2 #12 Relativity? · What are some of the consequences of GR? · What are Black Holes like and do they exist? · What? · What are Black Holes like and do they exist? · What can we learn from Gravity Waves? · To do all

Cook, Greg

127

black ears to blonde cats  

E-Print Network (OSTI)

black ears to blonde cats: paths for designing change Ben Bederson & Allison Druin Computer Science of cats lived in a remote village. A river divided the village in two. Black cats lived on one bank and blonde cats lived on the other... In summer and autumn, a black cat ruled the village and in spring

Golbeck, Jennifer

128

5, 40834113, 2005 Black Carbon  

E-Print Network (OSTI)

ACPD 5, 4083­4113, 2005 Black Carbon Specific Absorption in the Mexico City Metropolitan Area J. C and Physics Discussions Measurements of Black Carbon Specific Absorption in the Mexico City Metropolitan Area License. 4083 #12;ACPD 5, 4083­4113, 2005 Black Carbon Specific Absorption in the Mexico City Metropolitan

Paris-Sud XI, Université de

129

Black Cat 2 Aufgenommene Mewerte  

E-Print Network (OSTI)

Black Cat 2 Aufgenommene Me?werte Version: 0 Stand: 13.05.2005 Autor: Henry Westphal Tigris: X:\\2003_2004_Roehrenverstaerker\\Black_Cat_2\\REV0\\Documents\\2006-07-15_Black_Cat_2_Messwerte.doc #12

Wichmann, Felix

130

Acoustic black holes Matt Visser  

E-Print Network (OSTI)

Acoustic black holes Matt Visser Physics Department Washington University Saint Louis USA Ole Miss you develop a number of use- ful connections between supersonic uid ow and black holes in general is the basis underlying a deep and fruitful analogy between the black holes of Einstein gravity and supersonic

Visser, Matt

131

Numerical Simulations of Black Holes  

E-Print Network (OSTI)

Numerical Simulations of Black Holes 26 Aug 2009 Frank Herrmann (fherrman@umd.edu) Department · merger of compact objects Much more than just black hole evolutions · Formulations · Hyperboloidal)/2.0; . . . high arithmetic intensity Operator Number of times used 12,961 + 5,398 - 3,438 / 69 14 #12;Black Hole

Maryland at College Park, University of

132

Dave Kaminsky Charles L. Black  

E-Print Network (OSTI)

1935 $50.00 Dave Kaminsky 1938 $200.00 Charles L. Black 1940 $50.00 Harold S. Miropol 1941 $67,770.00 Phillip B. Bandel Robert C. Batson Charles L. Black Russell Blaylock Barry Boston Lawrence J. Danna James $5,650.00 Robert A. Alexander Bradley C. Black James C. Boothe Joseph C. Bremer Theodore W. Burns

133

BLACK BOX CHECKING DORON PELED  

E-Print Network (OSTI)

BLACK BOX CHECKING DORON PELED Bell Laboratories 600 Mountain Ave. Murray Hill, NJ 07974, USA MOSHE properties. We propose and formalize this problem of black box checking and suggest several algorithms. Since the input to black box checking is not given initially, as is the case in the classical model of computation

Vardi, Moshe Y.

134

"Exotic" black holes with torsion  

E-Print Network (OSTI)

In the context of three-dimensional gravity with torsion, the concepts of standard and "exotic" Banados-Teitelboim-Zanelli black holes are generalized by going over to black holes with torsion. This approach provides a unified insight into thermodynamics of black holes, with or without torsion.

Blagojevi?, M; Vasili?, M

2013-01-01T23:59:59.000Z

135

Extremal black disks in QCD  

E-Print Network (OSTI)

We argue that in the high energy QCD a true black disk wave function necessarily contains many quarks. This corresponds to necessity of non-vacuum reggeon loops in formation of a black disk. The result comes from decomposition of the black disk S-matrix in characters on group manifold.

Alexey V. Popov

2008-05-12T23:59:59.000Z

136

Black holes and black strings in plane waves  

E-Print Network (OSTI)

We investigate the construction of black holes and black strings in vacuum plane wave spacetimes using the method of matched asymptotic expansions. We find solutions of the linearised equations of motion in the asymptotic region for a general source on a plane wave background. We observe that these solutions do not satisfy our previously defined conditions for being asymptotically plane wave. We consider the solution in the near region, treating the plane wave as a perturbation of a black object, and find that there is a regular black string solution but no regular black hole solution.

Witt, Julian Le

2009-01-01T23:59:59.000Z

137

Black Diamond Internal network  

E-Print Network (OSTI)

?? ? ??Ð ? ? ? ?? ?????Ð ´? µ Ð ? Ð ?? ? ? ?? #12;Black Diamond Internet 123456 789101112 A B 12x 6x

Imperial College, London

138

Gasification of black liquor  

DOE Patents (OSTI)

A concentrated aqueous black liquor containing carbonaceous material and alkali metal sulfur compounds is treated in a gasifier vessel containing a relatively shallow molten salt pool at its bottom to form a combustible gas and a sulfide-rich melt. The gasifier vessel, which is preferably pressurized, has a black liquor drying zone at its upper part, a black liquor solids gasification zone located below the drying zone, and a molten salt sulfur reduction zone which comprises the molten salt pool. A first portion of an oxygen-containing gas is introduced into the gas space in the gasification zone immediately above the molten salt pool. The remainder of the oxygen-containing gas is introduced into the molten salt pool in an amount sufficient to cause gasification of carbonaceous material entering the pool from the gasification zone but not sufficient to create oxidizing conditions in the pool. The total amount of the oxygen-containing gas introduced both above the pool and into the pool constitutes between 25 and 55% of the amount required for complete combustion of the black liquor feed. A combustible gas is withdrawn from an upper portion of the drying zone, and a melt in which the sulfur content is predominantly in the form of alkali metal sulfide is withdrawn from the molten salt sulfur reduction zone. 2 figs.

Kohl, A.L.

1987-07-28T23:59:59.000Z

139

Gasification of black liquor  

DOE Patents (OSTI)

A concentrated aqueous black liquor containing carbonaceous material and alkali metal sulfur compounds is treated in a gasifier vessel containing a relatively shallow molten salt pool at its bottom to form a combustible gas and a sulfide-rich melt. The gasifier vessel, which is preferably pressurized, has a black liquor drying zone at its upper part, a black liquor solids gasification zone located below the drying zone, and a molten salt sulfur reduction zone which comprises the molten salt pool. A first portion of an oxygen-containing gas is introduced into the gas space in the gasification zone immediatley above the molten salt pool. The remainder of the oxygen-containing gas is introduced into the molten salt pool in an amount sufficient to cause gasification of carbonaceous material entering the pool from the gasification zone but not sufficient to create oxidizing conditions in the pool. The total amount of the oxygen-containing gas introduced both above the pool and into the pool constitutes between 25 and 55% of the amount required for complete combustion of the black liquor feed. A combustible gas is withdrawn from an upper portion of the drying zone, and a melt in which the sulfur content is predominantly in the form of alkali metal sulfide is withdrawn from the molten salt sulfur reduction zone.

Kohl, Arthur L. (Woodland Hills, CA)

1987-07-28T23:59:59.000Z

140

Red-black Tree Jingjing Xia  

E-Print Network (OSTI)

Advanced Algorithm Design Red-black Tree Jingjing Xia #12;Red-Black Tree A red-black tree is a binary search tree, and each node contains one extra field: its color, it can be either black or red of the binary search tree. If a binary search tree satisfies all the following red-black properties, it is a red-black

Chen, Yangjun

Note: This page contains sample records for the topic "black warrior paradox" 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

Renewable Electric Plant Information System user interface manual: Paradox 7 Runtime for Windows  

DOE Green Energy (OSTI)

The Renewable Electric Plant Information System (REPiS) is a comprehensive database with detailed information on grid-connected renewable electric plants in the US. The current version, REPiS3 beta, was developed in Paradox for Windows. The user interface (UI) was developed to facilitate easy access to information in the database, without the need to have, or know how to use, Paradox for Windows. The UI is designed to provide quick responses to commonly requested sorts of the database. A quick perusal of this manual will familiarize one with the functions of the UI and will make use of the system easier. There are six parts to this manual: (1) Quick Start: Instructions for Users Familiar with Database Applications; (2) Getting Started: The Installation Process; (3) Choosing the Appropriate Report; (4) Using the User Interface; (5) Troubleshooting; (6) Appendices A and B.

NONE

1996-11-01T23:59:59.000Z

142

Black-hole astrophysics  

SciTech Connect

Black-hole astrophysics is not just the investigation of yet another, even if extremely remarkable type of celestial body, but a test of the correctness of the understanding of the very properties of space and time in very strong gravitational fields. Physicists` excitement at this new prospect for testing theories of fundamental processes is matched by that of astronomers at the possibility to discover and study a new and dramatically different kind of astronomical object. Here the authors review the currently known ways that black holes can be identified by their effects on their neighborhood--since, of course, the hole itself does not yield any direct evidence of its existence or information about its properties. The two most important empirical considerations are determination of masses, or lower limits thereof, of unseen companions in binary star systems, and measurement of luminosity fluctuations on very short time scales.

Bender, P. [Univ. of Colorado, Boulder, CO (United States); Bloom, E. [Stanford Linear Accelerator Center, Menlo Park, CA (United States); Cominsky, L. [Sonoma State Univ., Rohnert Park, CA (United States). Dept. of Physics and Astronomy] [and others

1995-07-01T23:59:59.000Z

143

Black Holes with Skyrme Hair  

E-Print Network (OSTI)

This paper is intended to give a review of the recent developments on black holes with Skyrme hair. The Einstein-Skyrme system is known to possess black hole solutions with Skyrme hair. The spherically symmetric black hole skyrmion with B=1 was the first discovered counter example of the no-hair conjecture for black holes. Recently we found the B=2 axially symmetric black hole skyrmion. In this system, the black hole at the center of the skyrmion absorbs the baryon number partially, leaving fractional charge outside the horizon. Therefore the baryon number is no longer conserved. We examine the B=1, 2 black hole solutions in detail in this paper. The model has a natural extension to the gauged version which can describe monopole black hole skyrmions. Callan and Witten discussed the monopole catalysis of proton decay within the Skyrme model. We apply the idea to the Einstein-Maxwell-Skyrme system and obtain monopole black hole skyrmions. Remarkably there exist multi-black hole skyrmion solutions in which the gravitational, electromagnetic, and strong forces between the monopoles are all in balance. The solutions turn out to be stable under spherically symmetric linear perturbations.

Noriko Shiiki; Nobuyuki Sawado

2005-01-09T23:59:59.000Z

144

5D Black Rings and 4D Black Holes  

E-Print Network (OSTI)

It has recently been shown that the M theory lift of a IIA 4D BPS Calabi-Yau black hole is a 5D BPS black hole spinning at the center of a Taub-NUT-flux geometries, and a certain linear relation between 4D and 5D BPS partition functions was accordingly proposed. In the present work we fortify and enrich this proposal by showing that the M-theory lift of the general 4D multi-black hole geometry are 5D black rings in a Taub-NUT-flux geometry.

Davide Gaiotto; Andrew Strominger; Xi Yin

2005-04-14T23:59:59.000Z

145

Paradox Basin source rock, southeastern Utah : organic geochemical characterization of Gothic and Chimney Rock units, Ismay and Desert Creek zones, within a sequence stratigraphic framework.  

E-Print Network (OSTI)

??The Chimney Rock and Gothic units of the Pennsylvanian Paradox Formation have long been considered source rocks for the rich hydrocarbon fields of southeastern Utah. (more)

Tischler, Keith Louris

2012-01-01T23:59:59.000Z

146

Data:Ee54db70-1d15-4877-a1f2-da46a8bc253b | Open Energy Information  

Open Energy Info (EERE)

Black Warrior Elec Member Corp Effective date: 20130901 End date if known: Rate name: Street Light Service (100 W High Pressure Sodium) Sector: Lighting Description: Source or...

147

U.S. Virgin Islands - U.S. Energy Information Administration (EIA ...  

U.S. Energy Information Administration (EIA)

U.S. Geological Survey, Assessment of Undiscovered Oil and Gas Resources of the Black Warrior Basin Province, 2002, USGS Fact Sheet FS-038-03, April 2003

148

Microsoft Word - FT2b 092408 97-03  

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

Black Warrior Basin Coal Seam Project Field Test Location Tuscaloosa County, Alabama Summary of Field Test Site and Operations The Southeast Regional Carbon Sequestration...

149

Page not found | Department of Energy  

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

Categorical Exclusion Determination Site Characterization for Carbon Dioxide Storage from Coal-fired Power Facilities in the Black Warrior Basin of Alabama CX(s) Applied:...

150

Mississippi Profile - Energy Information Administration  

U.S. Energy Information Administration (EIA)

In recent years, new wells have been completed at the Mariner Field along the Gulf Coast and at the Maben Field in the Black Warrior Basin.

151

U.S. Energy Information Administration - EIA - Independent ...  

U.S. Energy Information Administration (EIA)

... in the Black Warrior Basin and the Cahaba Coal Field. As with oil production, Alabamas natural gas production is in decline and does not satisfy State ...

152

The Interplay Between Galaxies and Black Holes  

E-Print Network (OSTI)

The Interplay Between Galaxies and Black Holes A Theoretical Overview Massimo Ricotti (U · Formation of "Seed Black Holes" 1. Primordial Black Holes 2. Pop III Stars Remnants 3. Direct Collapse 4. Stellar Dynamics · Black Hole Growth 1. Gas Accretion vs BH-BH Mergers 2. Feeding Black Holes » M

Maryland at College Park, University of

153

Black-Scholes 2.1 . . . . . . . . . . . . . . . . . . . . 5  

E-Print Network (OSTI)

Black-Scholes #12;1 2 2 5 2.1 . . . . . . . . . . . . . . . . . . . . 5 2-Ocone) . . . . . . . . . . . . . . . . . 18 4 Black-Scholes 25 4.1 Black-Scholes . . . . . . . . . . . . . . . . . . . . . . . 25 4}(d) . , (t) , (t)S t dWt . = 1 [8] , Black-Scholes . [8] , Black-Scholes . , . , 1 t log(St S0 ) . , [8] [6

Hattori, Tetsuya

154

Black entrepreneurship| Literature and reality.  

E-Print Network (OSTI)

?? This dissertation provides two major contributions to the entrepreneurship literature. First, it provides the first comprehensive survey of the papers published on black entrepreneurship (more)

Crump, Micah E. S.

2009-01-01T23:59:59.000Z

155

Quantum Mechanics and Black Holes  

E-Print Network (OSTI)

This paper discusses the existence of black holes from the foundations of quantum mechanics. It is found that quantum mechanics rule out a possible gravitational collapse.

Jose N. Pecina-Cruz

2005-11-11T23:59:59.000Z

156

Black Strings, Black Rings and State-space Manifold  

E-Print Network (OSTI)

State-space geometry is considered, for diverse three and four parameter non-spherical horizon rotating black brane configurations, in string theory and $M$-theory. We have explicitly examined the case of unit Kaluza-Klein momentum $D_1D_5P$ black strings, circular strings, small black rings and black supertubes. An investigation of the state-space pair correlation functions shows that there exist two classes of brane statistical configurations, {\\it viz.}, the first category divulges a degenerate intrinsic equilibrium basis, while the second yields a non-degenerate, curved, intrinsic Riemannian geometry. Specifically, the solutions with finitely many branes expose that the two charged rotating $D_1D_5$ black strings and three charged rotating small black rings consort real degenerate state-space manifolds. Interestingly, arbitrary valued $M_5$-dipole charged rotating circular strings and Maldacena Strominger Witten black rings exhibit non-degenerate, positively curved, comprehensively regular state-space configurations. Furthermore, the state-space geometry of single bubbled rings admits a well-defined, positive definite, everywhere regular and curved intrinsic Riemannian manifold; except for the two finite values of conserved electric charge. We also discuss the implication and potential significance of this work for the physics of black holes in string theory.

Stefano Bellucci; Bhupendra Nath Tiwari

2010-10-19T23:59:59.000Z

157

Black holes, AdS, and CFTs  

E-Print Network (OSTI)

count all states inside the black hole, but only those thatis the bag of gold? . . . . . Black hole entropy AdS/CFT 12000) [arXiv:hep-th/9911230] Black holes, AdS, and CFTs 11.

Marolf, Donald

2009-01-01T23:59:59.000Z

158

Black Stars and Gamma Ray Bursts  

E-Print Network (OSTI)

Stars that are collapsing toward forming a black hole but are frozen near the Schwarzschild horizon are termed ``black stars''. Collisions of black stars, in contrast to black hole collisions, may be sources of gamma ray bursts, whose basic parameters are estimated quite simply and are found to be consistent with observed gamma ray bursts. Black star gamma ray bursts should be preceded by gravitational wave emission similar to that from the coalescence of black holes.

Tanmay Vachaspati

2007-06-08T23:59:59.000Z

159

Increased Oil Production and Reserves Utilizing Secondary/Tertiary Recovery Techniques on Small Reservoirs in the Paradox Basin, Utah  

SciTech Connect

The primary objective of this project is to enhance domestic petroleum production by field demonstration and technology transfer of an advanced- oil-recovery technology in the Paradox basin, southeastern Utah. If this project can demonstrate technical and economic feasibility, the technique can be applied to approximately 100 additional small fields in the Paradox basin alone, and result in increased recovery of 150 to 200 million barrels (23,850,000-31,800,000 m3) of oil. This project is designed to characterize five shallow-shelf carbonate reservoirs in the Pennsylvanian (Desmoinesian) Paradox Formation and choose the best candidate for a pilot demonstration project for either a waterflood or carbon-dioxide-(CO2-) miscible flood project. The field demonstration, monitoring of field performance, and associated validation activities will take place within the Navajo Nation, San Juan County, Utah.

Jr., Chidsey, Thomas C.; Allison, M. Lee

1999-11-02T23:59:59.000Z

160

Nonlinear Electrodynamics and black holes  

E-Print Network (OSTI)

It is addressed the issue of black holes with nonlinear electromagnetic field, focussing mainly in the Born-Infeld case. The main features of these systems are described, for instance, geodesics, energy conditions, thermodynamics and isolated horizon aspects. Also are revised some black hole solutions of alternative nonlinear electrodynamics and its inconveniences.

Nora Breton; Ricardo Garcia-Salcedo

2007-02-01T23:59:59.000Z

Note: This page contains sample records for the topic "black warrior paradox" 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

AMF Deployment, Black Forest, Germany  

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

Germany Germany Black Forest Deployment AMF Home Black Forest Home Data Plots and Baseline Instruments CERA COPS Data University of Hohenheim COPS Website COPS Update, April 2009 Experiment Planning COPS Proposal Abstract and Related Campaigns Science Plan (PDF, 12.4M) Outreach COPS Backgrounder (PDF, 306K) Posters AMF Poster, German Vesion Researching Raindrops in the Black Forest News Campaign Images AMF Deployment, Black Forest, Germany Main Site: 48° 32' 24.18" N, 08° 23' 48.72" E Altitude: 511.43 meters In March 2007, the third deployment of the ARM Mobile Facility (AMF) will take place in the Black Forest region of Germany, where scientists will study rainfall resulting from atmospheric uplift (convection) in mountainous terrain, otherwise known as orographic precipitation. ARM

162

Black Hills Corporation | Open Energy Information  

Open Energy Info (EERE)

Black Hills Corporation Jump to: navigation, search Name Black Hills Corporation Place Rapid City, South Dakota Zip 57709 Product Diversified energy and communications company....

163

Pressure Effects on Black Liquor Gasification .  

E-Print Network (OSTI)

??Gasification of black liquor is an alternative to the combustion of black liquor, which is currently the dominant form of chemical recovery in the paper (more)

Young, Christopher Michael

2006-01-01T23:59:59.000Z

164

BlackGold Biofuels | Open Energy Information  

Open Energy Info (EERE)

BlackGold Biofuels Jump to: navigation, search Name BlackGold Biofuels Place Philadelphia, Pennsylvania Zip 19107 Product Philadelphia-based developer of a waste...

165

Black optic display  

DOE Patents (OSTI)

An optical display includes a plurality of stacked optical waveguides having first and second opposite ends collectively defining an image input face and an image screen, respectively, with the screen being oblique to the input face. Each of the waveguides includes a transparent core bound by a cladding layer having a lower index of refraction for effecting internal reflection of image light transmitted into the input face to project an image on the screen, with each of the cladding layers including a cladding cap integrally joined thereto at the waveguide second ends. Each of the cores is beveled at the waveguide second end so that the cladding cap is viewable through the transparent core. Each of the cladding caps is black for absorbing external ambient light incident upon the screen for improving contrast of the image projected internally on the screen.

Veligdan, James T. (Manorville, NY)

1997-01-01T23:59:59.000Z

166

Black hole remnant of black hole-neutron star coalescing binaries with arbitrary black hole spin  

E-Print Network (OSTI)

A model for determining the dimensionless spin parameter and mass of the black hole remnant of black hole-neutron star mergers with arbitrary initial black hole spin angular momentum, binary mass ratio, and neutron star mass and cold equation of state is formulated. Tests against numerical-relativity results are carried out, showing that both the dimensionless spin parameter and the final mass are accurately reproduced. For the first time, the behaviour of both quantities and of the l = 2, m = 2, n = 0 quasinormal mode frequency is inspected throughout the parameter space. Predictions of this frequency may be exploited to guide gravitational wave modelling and detection efforts, and to extract physical information from detected gravitational wave signals that would help us break degeneracies between binary black hole and black hole-neutron star systems, improve our understanding of compact binary formation, and constrain the neutron star equation of state.

Francesco Pannarale

2013-11-22T23:59:59.000Z

167

Red-Black Trees Red-black trees are binary search trees that sat-  

E-Print Network (OSTI)

1 Red-Black Trees Red-black trees are binary search trees that sat- isfy: 1. Every node is either red or black. 2. If a node is red, then its parent is black. 3. For a given node, every path to a nil has the same number of black nodes, called black- height. A red-black tree with n nodes has h 2 lg

Bylander, Tom

168

Klein's Paradox  

E-Print Network (OSTI)

We solve the one dimensional Feshbach-Villars equation for spin-1/2 particle subjected to a scalar smooth potential. The eight component wave function is given in terms of the hypergeometric functions and via a limiting procedure, the wave functions of the step potential are deduced. These wave functions are used to test the validity of the boundary conditions deduced from the Feshbach-Villars transformation. The creation of pairs is predicted from the boundary condition of the charge density.

A. Bounames; L. Chetouani

2007-12-02T23:59:59.000Z

169

Black carbon snow albedo reduction  

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

Black carbon snow albedo reduction Black carbon snow albedo reduction Title Black carbon snow albedo reduction Publication Type Journal Article Year of Publication 2012 Authors Hadley, Odelle L., and Thomas W. Kirchstetter Journal Nature Climate Change Volume 2 Pagination 437-440 Abstract Climate models indicate that the reduction of surface albedo caused by black-carbon contamination of snow contributes to global warming and near-worldwide melting of ice1, 2. In this study, we generated and characterized pure and black-carbon-laden snow in the laboratory and verified that black-carbon contamination appreciably reduces snow albedo at levels that have been found in natural settings1, 3, 4. Increasing the size of snow grains in our experiments decreased snow albedo and amplified the radiative perturbation of black carbon, which justifies the aging-related positive feedbacks that are included in climate models. Moreover, our data provide an extensive verification of the Snow, Ice and Aerosol Radiation model1, which will be included in the next assessment of the Intergovernmental Panel on Climate Change5.

170

Black Holes in Brane Worlds  

E-Print Network (OSTI)

In a Randall-Sundrum theory (RS1) 3+1 dimensional black holes and higher dimensional black holes are not the natural continuations of each other. 3+1 dimensional black holes decay into a large number of 4+1 dimensional black holes at a critical mass, Mcrit ? 10 32 TeV. Those black holes themselves may become unstable above another, albeit much smaller critical mass, M0 ? 10 3 TeV. Models of the universe with extra dimensions larger than the Planck length have been under intense investigation during the last few years [1, 2, 3, 4]. The general feature of these models is that standard model particles are compelled to live on 3-branes, to satisfy momentum conservation in 3+1 dimensions and to conform to other phenomenological bounds, while gravity pervades all dimensions. Many of these models predict the observation of black holes at future accelerators [1, 5, 6, 7]. The models either use flat but compact extra dimensions(ADD scenario) [1] or a number of branes embedded in AdS space, with warped extra dimension(s) [2, 3]. Black holes in theories with extra dimensions have been studied widely. The classic paper of Myers and Perry [8] found solutions in D-dimensional flat space. Black hole solutions were also found in AdS space [9, 10]. No non-trivial black hole solutions have been found in closed form in brane theories of the Randall Sundrum type. Yet, it is important to learn as much as possible about black holes in such models. The black string solution [11] that extends in a uniform manner from the brane into the extra dimension has the Gregory-Laflamme instability in the ADD scenario [11, 12]. It is easy to invoke an entropy argument [13], to show that an instability will occur at a critical mass. An alternative interpretation is given in [14]. To understand the arguments by Gregory and Laflamme, compare the entropies of standard 3+1 and 4+1 dimensional Schwarzschild black holes of the same mass. Then one obtains a critical mass

P. Suranyi; L. C. R. Wijewardhana; Mcrit M

2008-01-01T23:59:59.000Z

171

Temperature Sensitivity of Black Carbon Decomposition and  

E-Print Network (OSTI)

Temperature Sensitivity of Black Carbon Decomposition and Oxidation B I N H T H A N H N G U Y E N to physical protection, chemical recalcitrance influences SOC decomposition rates. Black carbon (BC isotope geochemistry and nanomorphology of soil black carbon: Black chernozemic soils in central Europe

Lehmann, Johannes

172

PERSPECTIVE Quantum Mechanics of Black Holes  

E-Print Network (OSTI)

PERSPECTIVE Quantum Mechanics of Black Holes Edward Witten The popular conception of black holes reflects the behavior of the massive black holes found by astronomers and described by classical general to understand the behavior of black holes from a quantum mechanical point of view, however, have arrived

173

vol. 179, no. 3 the american naturalist march 2012 Insects on Plants: Explaining the Paradox of Low Diversity  

E-Print Network (OSTI)

species pools. Herbivore diversity increases as a power function of plant diversity, and the rate specialized herbivores or pathogens have density-dependent effects on plant growth and fitness, put- tingvol. 179, no. 3 the american naturalist march 2012 Insects on Plants: Explaining the Paradox of Low

174

Black in the Non-Black Imagination: How Anti-Black Ideology Shapes Non-Black Racial Discourse.  

E-Print Network (OSTI)

??This study examines the (re)production of anti-Black ideology in critical discourses on race. Though contemporary critical discourses on race have been concerned with theorizing about (more)

Howard, Natasha

2011-01-01T23:59:59.000Z

175

Black Peak and Enchantments - CECM  

E-Print Network (OSTI)

Black Peak, North Cascades. A nice two day outing. We hiked on the Maple Pass trail, from Hwy. 20, to Heather Pass, and then on a path to Lewis lake, where...

176

Of the Black Hole Thermodynamics  

E-Print Network (OSTI)

About thirty years ago, Bekenstein and Hawking introduced three basic concepts relating to black hole, namely, the "area entropy", "gravitation temperature" and "thermal radiation". The author analyzes these concepts systematically and concludes that they are mostly inadequate or wrong. He points out that a black hole's taking in thermal radiation from the space is an energy-gathering process. It is special, even extraordinary. It reduces entropy, violating Clausius' second law.

Xinyong Fu

2005-01-11T23:59:59.000Z

177

Regular black hole in three dimensions  

E-Print Network (OSTI)

We find a new black hole in three dimensional anti-de Sitter space by introducing an anisotropic perfect fluid inspired by the noncommutative black hole. This is a regular black hole with two horizons. We compare thermodynamics of this black hole with that of non-rotating BTZ black hole. The first-law of thermodynamics is not compatible with the Bekenstein-Hawking entropy.

Yun Soo Myung; Myungseok Yoon

2008-10-01T23:59:59.000Z

178

Rotating Black Holes in Higher Dimensions  

E-Print Network (OSTI)

The properties of higher-dimensional black holes can differ significantly from those of black holes in four dimensions, since neither the uniqueness theorem, nor the staticity theorem or the topological censorship theorem generalize to higher dimensions. We first discuss black holes of Einstein-Maxwell theory and Einstein-Maxwell-Chern-Simons theory with spherical horizon topology. Here new types of stationary black holes are encountered. We then discuss nonuniform black strings and present evidence for a horizon topology changing transition.

Burkhard Kleihaus; Jutta Kunz; Francisco Navarro-Lerida

2007-10-11T23:59:59.000Z

179

Fishing in Black Holes  

E-Print Network (OSTI)

The coordinate system $(\\bar{x},\\bar{t})$ defined by $r = 2m + K\\bar{x}- c K \\bar{t}$ and $t=\\bar{x}/cK - 1 /cK \\int_{r_a}^r (1- 2m/r + K^2)^{1/2} (1 - 2m/r)^{-1}dr$ allow us to write the Schwarzschild metric in the form: \\[ds^2=c^2 d\\bar{t}^2 + (W^2/K^2 - 2W/K) d\\bar{x}^2 + 2c (1 + W/K) d\\bar{x}d\\bar{t} - r^2 (d\\theta^2 + cos^2\\theta d\\phi^2)\\] with $W=(1 - 2m/r + K^2)^{1/2}$, in which the coefficients' pathologies are moved to $r_K = 2m/(1+K^2)$. This new coordinate system is used to study the entrance into a black hole of a rigid line (a line in which the shock waves propagate with velocity c).

A. Brotas

2006-09-01T23:59:59.000Z

180

Random Access Game in Fading Channels with Capture: Equilibria and Braess-like Paradoxes  

E-Print Network (OSTI)

The Nash equilibrium point of the transmission probabilities in a slotted ALOHA system with selfish nodes is analyzed. The system consists of a finite number of heterogeneous nodes, each trying to minimize its average transmission probability (or power investment) selfishly while meeting its average throughput demand over the shared wireless channel to a common base station (BS). We use a game-theoretic approach to analyze the network under two reception models: one is called power capture, the other is called signal to interference plus noise ratio (SINR) capture. Contrary to one's intuition, we show analytically the occurrence of Braess-like paradoxes that the performance of the system may degrade when channel state information (CSI) is available at the nodes.

Hsu, Fu-Te

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "black warrior paradox" 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.


181

Parrondo's paradox and superactivation of classical and quantum capacity of communication channels with memory  

E-Print Network (OSTI)

There exist memoryless zero-capacity quantum channels that when used jointly result in the channel with positive capacity. This phenomenon is called superactivation. Making use of Parrondo's paradox, we exhibit examples of superactivation-like effect for the capacity of classical communication channels as well as quantum and private capacity of quantum channels with memory. There are several ingredients necessary for superactivation of quantum capacity to occur in memoryless case. The first one is the requirement for the quantum channels which are amenable for superactivation to come from two distinct families - binding entanglement channels and erasure channels. The second one is the ability to utilize inputs which are entangled across the uses of the channels. Our construction uses a single family of erasure channels with classical memory to achieve the same superactivation-like effect for quantum capacity without any of the ingredients above.

Sergii Strelchuk

2013-05-06T23:59:59.000Z

182

Red-Black Trees 1 2004 Goodrich, Tamassia Red-Black Trees  

E-Print Network (OSTI)

Red-Black Trees 1© 2004 Goodrich, Tamassia Red-Black Trees 6 3 8 4 v z #12;Red-Black Trees 2© 2004 Goodrich, Tamassia From (2,4) to Red-Black Trees A red-black tree is a representation of a (2,4) tree by means of a binary tree whose nodes are colored red or black In comparison with its associated (2,4) tree

Alechina, Natasha

183

Area spectra of near extremal black holes and Kerr black holes  

E-Print Network (OSTI)

Motivated by Maggiore's new interpretation of quasinormal modes, starting from the first law of thermodynamics of black holes, we investigate area spectra of a near extremal Schwarzschild de sitter black hole and a higher dimensional near extremal Reissner-Nordstrom de sitter black hole. Then we apply the method to the Kerr black hole. We show that the logarithmic term does not appear and the area spectra of all these black holes are equally spaced and irrelevant to the parameters of black holes.

Chen, Deyou; Zu, Xiaotao

2010-01-01T23:59:59.000Z

184

Kraft black liquor delivery systems  

DOE Green Energy (OSTI)

Improvement of spray nozzles for black liquor injection into kraft recovery furnaces is expected to result from obtaining a controlled, well-defined droplet size distribution. Work this year has centered on defining the capabilities of commercial black liquor nozzles currently in use. Considerations of the observed mechanism of droplet formation suggest a major revision is needed in the theory of how droplets form from these nozzles. High resolution, high sensitivity video has been shown to be superior to flash x-ray as a technique for measuring the droplet size distribution as well as the formation history. An environmentally sound spray facility capable of spraying black liquor at temperatures up to normal firing conditions is being constructed before data acquisition continues. Preliminary correlations have been developed between liquor properties, nozzle design, and droplet size. Three aspects of nozzle design have been investigated: droplet size distribution, fluid sheet thickness, and flow and pressure drop characteristics. The standard deviation about the median droplet size for black liquor is nearly the same as the for a wide variety of other fluids and nozzle types. Preliminary correlation for fluid sheet thickness on the plate of a splashplate nozzle show the strong similarities of black liquor to other fluids. The flow and pressure drop characteristic of black liquor nozzle, follow a simple two-term relationship similar to other flow devices. This means that in routine mill operation of black liquor nozzles only the fluid acceleration in the nozzle is important, viscous losses are quiet small. 21 refs., 53 figs., 10 tabs.

Adams, T.N.; Empie, H.L.; Obuskovic, N.; Spielbauer, T.M.

1990-02-01T23:59:59.000Z

185

National Conference of Black Mayors, Inc. | Department of Energy  

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

National Conference of Black Mayors, Inc. National Conference of Black Mayors, Inc. The cooperative agreement enhances the National Conference of Black Mayors, Inc., members'...

186

Schroedinger Equation of the Schwarzschild Black Hole  

E-Print Network (OSTI)

We describe the gravitational degrees of freedom of the Schwarzschild black hole by one free variable. We introduce an equation which we suggest to be the Schroedinger equation of the Schwarzschild black hole corresponding to this model. We solve the Schroedinger equation explicitly and obtain the mass spectrum of the black hole as such as it can be observed by an observer very far away and at rest relative to the black hole. Our equation implies that there is no singularity inside the Schwarzschild black hole, and that the black hole has a certain ground state in which its mass is non-zero.

Jarmo Makela

1996-02-05T23:59:59.000Z

187

Massive Black Holes: formation and evolution  

E-Print Network (OSTI)

Supermassive black holes are nowadays believed to reside in most local galaxies. Observations have revealed us vast information on the population of local and distant black holes, but the detailed physical properties of these dark massive objects are still to be proven. Accretion of gas and black hole mergers play a fundamental role in determining the two parameters defining a black hole: mass and spin. We briefly review here the basic properties of the population of supermassive black holes, focusing on the still mysterious formation of the first massive black holes, and their evolution from early times to now.

Martin J. Rees; Marta Volonteri

2007-01-17T23:59:59.000Z

188

Quantum Criticality and Black Holes  

SciTech Connect

I will describe the behavior of a variety of condensed matter systems in the vicinity of zero temperature quantum phase transitions. There is a remarkable analogy between the hydrodynamics of such systems and the quantum theory of black holes. I will show how insights from this analogy have shed light on recent experiments on the cuprate high temperature superconductors. Studies of new materials and trapped ultracold atoms are yielding new quantum phases, with novel forms of quantum entanglement. Some materials are of technological importance: e.g. high temperature superconductors. Exact solutions via black hole mapping have yielded first exact results for transport coefficients in interacting many-body systems, and were valuable in determining general structure of hydrodynamics. Theory of VBS order and Nernst effect in cuprates. Tabletop 'laboratories for the entire universe': quantum mechanics of black holes, quark-gluon plasma, neutrons stars, and big-bang physics.

Sachdev, Subir (Harvard)

2007-08-22T23:59:59.000Z

189

Thermodynamic curvature and black holes  

E-Print Network (OSTI)

I give a relatively broad survey of thermodynamic curvature $R$, one spanning results in fluids and solids, spin systems, and black hole thermodynamics. $R$ results from the thermodynamic information metric giving thermodynamic fluctuations. $R$ has a unique status in thermodynamics as being a geometric invariant, the same for any given thermodynamic state. In fluid and solid systems, the sign of $R$ indicates the character of microscopic interactions, repulsive or attractive. $|R|$ gives the average size of organized mesoscopic fluctuating structures. The broad generality of thermodynamic principles might lead one to believe the same for black hole thermodynamics. This paper explores this issue with a systematic tabulation of results in a number of cases.

Ruppeiner, George

2013-01-01T23:59:59.000Z

190

Thermodynamic curvature and black holes  

E-Print Network (OSTI)

I give a relatively broad survey of thermodynamic curvature $R$, one spanning results in fluids and solids, spin systems, and black hole thermodynamics. $R$ results from the thermodynamic information metric giving thermodynamic fluctuations. $R$ has a unique status in thermodynamics as being a geometric invariant, the same for any given thermodynamic state. In fluid and solid systems, the sign of $R$ indicates the character of microscopic interactions, repulsive or attractive. $|R|$ gives the average size of organized mesoscopic fluctuating structures. The broad generality of thermodynamic principles might lead one to believe the same for black hole thermodynamics. This paper explores this issue with a systematic tabulation of results in a number of cases.

George Ruppeiner

2013-09-04T23:59:59.000Z

191

Enhanced Black Hole Horizon Fluctuations  

E-Print Network (OSTI)

We discuss the possible role of quantum horizon fluctuations on black hole radiance, especially whether they can invalidate Hawking's analysis based upon transplanckian modes. We are particularly concerned with ``enhanced'' fluctuations produced by gravitons or matter fields in squeezed vacuum states sent into the black hole after the collapse process. This allows for the possibility of increasing the fluctuations well above the vacuum level. We find that these enhanced fluctuations could significantly alter stimulated emission but have little effect upon the spontaneous emission. Thus the thermal character of the Hawking radiation is remarkably robust.

R. T. Thompson; L. H. Ford

2008-03-13T23:59:59.000Z

192

Information Loss in Black Holes  

E-Print Network (OSTI)

The question of whether information is lost in black holes is investigated using Euclidean path integrals. The formation and evaporation of black holes is regarded as a scattering problem with all measurements being made at infinity. This seems to be well formulated only in asymptotically AdS spacetimes. The path integral over metrics with trivial topology is unitary and information preserving. On the other hand, the path integral over metrics with non-trivial topologies leads to correlation functions that decay to zero. Thus at late times only the unitary information preserving path integrals over trivial topologies will contribute. Elementary quantum gravity interactions do not lose information or quantum coherence.

S. W. Hawking

2005-07-18T23:59:59.000Z

193

Supermassive black holes from supermassive stars  

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

Supermassive black holes from supermassive stars Supermassive black holes from supermassive stars 1663 Los Alamos science and technology magazine Latest Issue:November 2013 All Issues » submit Supermassive black holes from supermassive stars Supermassive stars in the early universe gave supermassive black holes a head start March 25, 2013 simulations suggest that star formation conditions back then allowed the first stars to become supermassive themselves In this simulation, a black hole that was just formed by the collapse of a supermassive star is surrounded by a distribution of gas (color indicates density). Because the black hole (located at the center but too small to see) grows by consuming the available gas, simulations like this one help determine how quickly the black hole can grow. The progenitor of this black

194

The Alumni and Development Team Helen Black  

E-Print Network (OSTI)

The Alumni and Development Team Helen Black Development Coordinator (Fundraising) Ph 8302 0974 Fax 8302 0970 helen.black@unisa.edu.au Chris Crabbe Development Officer (Corporate & Named Scholarships) Ph

South Australia, University of

195

A Use for Inheritance Andrew P. Black  

E-Print Network (OSTI)

A Use for Inheritance Andrew P. Black Department of Computer Science & Engineering, OGI School of Science & Engineering, Oregon Health & Science University black@cse.ogi.edu Abstract. There are, of course

Black, Andrew P.

196

BlackCyanMagentaYellow 203023451040506070808590100  

E-Print Network (OSTI)

BlackCyanMagentaYellow 203023451040506070808590100 My colleagues in the United Campus Ministry on linen (collection of the artist) of Willy Black Hanover resident and former Town Moderator (Left

Lotko, William

197

Blacks in Government | Department of Energy  

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

Blacks in Government Blacks in Government August 13, 2012 10:00AM EDT to August 17, 2012 6:00PM EDT Detroit, Michigan Contact Gloria Smith, diversity@hq.doe.gov...

198

Does phantom energy produce black hole?  

E-Print Network (OSTI)

We have found an exact solution of spherically symmetrical Einstein equations describing a black hole with a special type phantom energy source. It is surprising to note that our solution is analogous to Reissner-Nordstr\\"{o}m black hole.

F. Rahaman; A. Ghosh; M. Kalam

2006-12-23T23:59:59.000Z

199

Spacetime and orbits of bumpy black holes  

E-Print Network (OSTI)

Our Universe contains a great number of extremely compact and massive objects which are generally accepted to be black holes. Precise observations of orbital motion near candidate black holes have the potential to determine ...

Vigeland, Sarah Jane

200

ACCRETION-JET CONNECTION IN BLACK HOLES THE ORIGIN OF STELLAR BLACK HOLES &  

E-Print Network (OSTI)

ACCRETION-JET CONNECTION IN BLACK HOLES THE ORIGIN OF STELLAR BLACK HOLES & THEIR ROLE a very large kinetic energy...Moon @ >.9c" #12;POWERFUL DARK JETS FROM BLACK HOLES Radio (Dubner et al IN BLACK HOLES Fender, Belloni, Gallo (2006) Low-hard X-rays Persistent, flat spectrum radio source: G

Maryland at College Park, University of

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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
to obtain the most current and comprehensive results.


201

Paradigms of Black BoxParadigms of Black Box Software TestingSoftware Testing  

E-Print Network (OSTI)

Paradigms of Black BoxParadigms of Black Box Software TestingSoftware Testing Cem Kaner -- kaner · Black box testing groups vary widely in their approach to testing. · Tests that seem essential to one rather to define schools than to produce agreement. #12;5Kaner & Bach, Paradigms Black Box Testing

202

Harry Black Mr. Harry Black currently serves as the Director of Finance for the City of  

E-Print Network (OSTI)

Harry Black Mr. Harry Black currently serves as the Director of Finance for the City of Baltimore of Risk Management. Mr. Black has served as: Executive Vice President & COO of Global Commerce Solutions. Mr. Black is the author of "Achieving Economic Development Success: Tools that work," a nuts

Noakes, David R.

203

Black Swans, Dragons-Kings and Prediction Black Swan (Cygnus atratus)  

E-Print Network (OSTI)

Black Swans, Dragons-Kings and Prediction Black Swan (Cygnus atratus) www.er.ethz.ch Didier;12 2008 FINANCIAL CRISIS #12;Crises are not but "Dragon-kings" Dragon-king hypothesis #12;Black Swan story;17 Traditional emphasis on Daily returns do not reveal any anomalous events Financial crashes as "Black swans

204

37Black Hole Power...X Black holes are sometimes surrounded  

E-Print Network (OSTI)

37Black Hole Power...X Black holes are sometimes surrounded by a disk of orbiting matter. This disk is very hot. As matter finally falls into the black hole from the inner edge of that disk, it releases the infalling matter is about 7% of its rest-mass in all forms (heat+ light). The power produced by a black hole

205

4d neutral dilatonic black holes and (4+p) dimensional nondilatonic black p-branes  

E-Print Network (OSTI)

It is shown that, in contrast to the case of extreme 4d dilatonic black holes, 4d neutral dilatonic black holes with horizon singularities can not be interpreted as nonsingular nondilatonic black p-branes in (4+p) dimensions, regardless of the number of extra dimensions p. That is, extra dimensions do not remove naked singularities of 4d neutral dilatonic black holes.

J. R. Morris

2000-01-11T23:59:59.000Z

206

Growing Supermassive Black Holes by Chaotic Accretion  

E-Print Network (OSTI)

There is recent observational evidence (Barth et al., 2003, Willott et al, 2003) for supermassive black holes (SMBH)

A. R. King; J. E. Pringle

2006-01-01T23:59:59.000Z

207

a BLACK HOLES AND FUNDAMENTAL PHYSICS  

E-Print Network (OSTI)

We give a review of classical, thermodynamic and quantum properties of black holes relevant to fundamental physics. 1.

Jos P. S. Lemos; Centro Multidisciplinar; Astrofsica Centra

2005-01-01T23:59:59.000Z

208

Hawking Emission and Black Hole Thermodynamics  

E-Print Network (OSTI)

A brief review of Hawking radiation and black hole thermodynamics is given, based largely upon hep-th/0409024.

Don N. Page

2006-12-18T23:59:59.000Z

209

Call for Papers and Panels Unleashing the Black Erotic  

E-Print Network (OSTI)

and the Hypersexuality of Black Women Alternative Modes of Black Love and Family The Politics and Economics of Porn

Kunkle, Tom

210

NonBlackBox Techniques in Cryptography  

E-Print Network (OSTI)

Non­Black­Box Techniques in Cryptography Thesis for the Ph.D. Degree by Boaz Barak Under ``Black­Box'' as ``A device or theoretical construct with known or specified performance characteristics a program as a black­box means to use only its input/output relation by executing the program on chosen

Goldreich, Oded

211

6, 34193463, 2006 Black carbon or  

E-Print Network (OSTI)

ACPD 6, 3419­3463, 2006 Black carbon or brown carbon M. O. Andreae and A. Gelencs´er Title Page Chemistry and Physics Discussions Black carbon or brown carbon? The nature of light-absorbing carbonaceous;ACPD 6, 3419­3463, 2006 Black carbon or brown carbon M. O. Andreae and A. Gelencs´er Title Page

Paris-Sud XI, Université de

212

Black Carbon A Review and Policy Recommendations  

E-Print Network (OSTI)

Black Carbon A Review and Policy Recommendations Authors Karen Bice, Andrew Eil, Bilal Habib to integrate air quality and climate mitigation efforts, with a focus on black carbon. The group set out the latest science behind black carbon and researched possible mitigation policies. The latter included

Mauzerall, Denise

213

Paradigms of Black Box Software Testing  

E-Print Network (OSTI)

Paradigms of Black Box Software Testing Tutorial at Quality Week, 2002 Cem Kaner, J.D., Ph of the American Law Institute. #12;Copyright (c) 1994-2001 Cem Kaner. All Rights Reserved. 3 Paradigms of Black stakeholder interests #12;Copyright (c) 1994-2001 Cem Kaner. All Rights Reserved. 7 The Puzzle Black box

214

Slavery, Insurance, and Sacrifice in the Black  

E-Print Network (OSTI)

__ ls __ le __ ll 167 CHAPTER 9 Slavery, Insurance, and Sacrifice in the Black Atlantic TIM;Slavery, Insurance, and Sacrifice in the Black Atlantic · 169 __ ls __ le __ ll residence, age and quality as 1781, it is by analogy with ransom provisions that the French began to insure the lives of "black

Sheldon, Nathan D.

215

Non-Black-Box Techniques in Cryptography  

E-Print Network (OSTI)

Non-Black-Box Techniques in Cryptography Thesis for the Ph.D. Degree by Boaz Barak Under dictionary defines the term "Black-Box" as "A device or theoretical construct with known or specified of Computer Science, to use a program as a black-box means to use only its input/output relation by executing

Barak, Boaz

216

COMMENTARIES Opening the Black Boxes: Ecosystem  

E-Print Network (OSTI)

COMMENTARIES Opening the Black Boxes: Ecosystem Science and Economic Valuation Stephen R. Carpenter and nature, then diverse disciplines must learn to view each other as more than just another black box. ``The'' must become more than just another state variable to the economist. As the black boxes have opened up

Turner, Monica G.

217

6, 1187711912, 2006 Scavenging of black  

E-Print Network (OSTI)

ACPD 6, 11877­11912, 2006 Scavenging of black carbon in mixed phase clouds J. Cozic et al. Title Chemistry and Physics Discussions Scavenging of black carbon in mixed phase clouds at the high alpine site, 11877­11912, 2006 Scavenging of black carbon in mixed phase clouds J. Cozic et al. Title Page Abstract

Paris-Sud XI, Université de

218

Supermassive Black Holes and the Warm Ionized  

E-Print Network (OSTI)

Supermassive Black Holes and the Warm Ionized Gas in Early-type Galaxies Renbin Yan University stars actively. (late-type galaxies) #12;Prevalence of Supermassive Black Holes in Massive Galaxies MBH merging Right after coalescing Post-merger Star Formation Rate Black Hole Accretion Rate #12;Maintenance

Wang, Ming-Jye

219

8, 98839929, 2008 Black carbon at  

E-Print Network (OSTI)

ACPD 8, 9883­9929, 2008 Black carbon at Syowa station, Antarctica K. Hara et al. Title Page.0 License. Atmospheric Chemistry and Physics Discussions Measurement of black carbon at Syowa station on behalf of the European Geosciences Union. 9883 #12;ACPD 8, 9883­9929, 2008 Black carbon at Syowa station

Paris-Sud XI, Université de

220

BlackCyanMagentaYellow 203023451040506070808590100  

E-Print Network (OSTI)

BlackCyanMagentaYellow 203023451040506070808590100 Page 4 D artmouth hosts more than 20 different #12;BlackCyanMagentaYellow bringcrosshairtobottomofshadedbox 20 30 2 3 4 5 10 40 50 60 70 80 85 90 100, Russian (b. 1866), Circling, 1924 Pen, black ink, graphite, and watercolor Gift of Wallace K. Harrison

Lotko, William

Note: This page contains sample records for the topic "black warrior paradox" 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

Implementation Update Black and Gold Commission  

E-Print Network (OSTI)

Implementation Update Black and Gold Commission June, 2003 1 Action Item/ Major Initiative Outcomes Policies and Practices of UWM with principles and goals of Black & Gold Commission UWM culture supports Senate; Student Association; Classified Employee Groups; Deans & Division Heads Spirit of the Black

Saldin, Dilano

222

4, 871891, 2007 Mobility of black  

E-Print Network (OSTI)

BGD 4, 871­891, 2007 Mobility of black carbon J. Leifeld et al. Title Page Abstract Introduction Discussions is the access reviewed discussion forum of Biogeosciences Mobility of black carbon in drained­891, 2007 Mobility of black carbon J. Leifeld et al. Title Page Abstract Introduction Conclusions References

Paris-Sud XI, Université de

223

Accretion Processes in BlackHole Binaries  

E-Print Network (OSTI)

Accretion Processes in Black­Hole Binaries Roberto Soria A thesis submitted for the degree presented in ``Measuring the Mass of the Black Hole in GRO J1655\\Gamma40'', Soria, R., Wickramasinghe, D. T processes in black­hole bina­ ries, theoretically and observationally, focussing on the role of outflows

Soria, Roberto

224

3, 211271, 2006 Black carbon in the  

E-Print Network (OSTI)

BGD 3, 211­271, 2006 Black carbon in the boreal C. M. Preston and M. W. I. Schmidt Title Page Discussions Biogeosciences Discussions is the access reviewed discussion forum of Biogeosciences Black Correspondence to: C. M. Preston (cpreston@pfc.cfs.nrcan.gc.ca) 211 #12;BGD 3, 211­271, 2006 Black carbon

Paris-Sud XI, Université de

225

Black Hole Spectrum: Continuous or Discrete?  

E-Print Network (OSTI)

We formulate a qualitative argument, based on Heisenberg's uncertainty principle, to support the claim that when the effects of matter fields are assumed to overshadow the effects of quantum mechanics of spacetime, the discrete spectrum of black hole radiation, as such as predicted by Bekenstein's proposal for a discrete black hole area spectrum, reduces to Hawking's black-body spectrum.

Jarmo Makela

1996-08-30T23:59:59.000Z

226

Charged Black Holes in New Massive Gravity  

E-Print Network (OSTI)

We construct charged black hole solutions to three-dimensional New Massive Gravity (NMG), by adding electromagnetic Maxwell and Chern-Simons actions. We find charged black holes in the form of warped AdS_3 and "log" solutions in specific critical point. The entropy, mass and angular momentum of these black holes are computed.

Ghodsi, Ahmad

2010-01-01T23:59:59.000Z

227

Gravitational lensing of STU black holes  

E-Print Network (OSTI)

In this paper we study gravitational lensing by STU black holes. We considered extremal limit of two special cases of zero-charged and one-charged black holes, and obtain the deflection angle. We find that the black hole charge increases the deflection angle.

Hassan Saadat

2013-06-03T23:59:59.000Z

228

Gravitational lensing of STU black holes  

E-Print Network (OSTI)

In this paper we study gravitational lensing by STU black holes. We considered extremal limit of two special cases of zero-charged and one-charged black holes, and obtain the deflection angle. We find that the black hole charge increases the deflection angle.

Saadat, Hassan

2013-01-01T23:59:59.000Z

229

tyvek8 inch black sheet  

E-Print Network (OSTI)

????? ??? ?? ? Ð ? Ð ? ½¼ ? ? ? ?? ? ? ?? Ý ? ? ? ??ÐÝ ¿??º ½¿ #12;tyvek8 inch PMT black sheet 20

Tokyo, University of

230

Black Hole's Life at colliders  

E-Print Network (OSTI)

In the series of papers by Ida, Oda and Park, the complete description of Hawking radiation to the brane localized Standard Model fields from mini black holes in the low energy gravity scenarios are obtained. Here we briefly review what we have learned in those papers.

Seong Chan Park

2007-04-09T23:59:59.000Z

231

Black Hole fragmentation and holography  

E-Print Network (OSTI)

We discuss the entropy change due to fragmentation for black hole solutions in various dimensions. We find three different types of behavior. The entropy may decrease, increase or have a mixed behavior, characterized by the presence of a threshold mass. For two-dimensional (2D) black holes we give a complete characterization of the entropy behavior under fragmentation, in the form of sufficient conditions imposed on the function J, which defines the 2D gravitational model. We compare the behavior of the gravitational solutions with that of free field theories in d dimensions. This excludes the possibility of finding a gravity/field theory realization of the holographic principle for a broad class of solutions, including asymptotically flat black holes. We find that the most natural candidates for holographic duals of the black hole solutions with mixed behavior are field theories with a mass gap. We also discuss the possibility of formulating entropy bounds that make reference only to the energy of a system.

Mariano Cadoni

2003-11-18T23:59:59.000Z

232

FORCE-FEEDING BLACK HOLES  

SciTech Connect

We propose that the growth of supermassive black holes is associated mainly with brief episodes of highly super-Eddington infall of gas ({sup h}yperaccretion{sup )}. This gas is not swallowed in real time, but forms an envelope of matter around the black hole that can be swallowed gradually, over a much longer timescale. However, only a small fraction of the black hole mass can be stored in the envelope at any one time. We argue that any infalling matter above a few percent of the hole's mass is ejected as a result of the plunge in opacity at temperatures below a few thousand degrees kelvin, corresponding to the Hayashi track. The speed of ejection of this matter, compared to the velocity dispersion {sigma} of the host galaxy's core, determines whether the ejected matter is lost forever or returns eventually to rejoin the envelope, from which it can be ultimately accreted. The threshold between matter recycling and permanent loss defines a relationship between the maximum black hole mass and {sigma} that resembles the empirical M{sub BH}-{sigma} relation.

Begelman, Mitchell C., E-mail: mitch@jila.colorado.edu [Also at Department of Astrophysical and Planetary Sciences, University of Colorado Boulder, CO, USA. (United States)

2012-04-10T23:59:59.000Z

233

Coordinated studies in support of hydraulic fracturing of coalbed methane. Annual report, January 1993-April 1994  

SciTech Connect

The production of natural gas from coal typically requires stimulation in the form of hydraulic fracturing and, more recently, cavity completions. The results of hydraulic fracturing treatments have ranged from extremely successful to less than satisfactory. The purpose of this work is to characterize common and potential fracturing fluids in terms of coal-fluid interactions to identify reasons for less than satisfactory performance and to ultimately devise alternative fluids and treatment procedures to optimize production following hydraulic fracturing. The laboratory data reported herein has proven helpful in designing improved hydraulic fracturing treatments and remedial treatments in the Black Warrior Basin. Acid inhibitors, scale inhibitors, additives to improve coal relative permeability to gas, and non-damaging polymer systems for hydraulic fracturing have been screened in coal damage tests. The optimum conditions for creating field-like foams in the laboratory have been explored. Tests have been run to identify minimum polymer and surfactant concentrations for applications of foam in coal. The roll of 100 mesh sand in controlling leakoff and impairing conductivity in coal has been investigated. The leakoff and proppant transport of fluids with breaker has been investigated and recommendations have been made for breaker application to minimize damage potential in coal. A data base called COAL`S has been created in Paradox (trademark) for Windows to catalogue coalbed methane activities in the Black Warrior and San Juan Basins.

Penny, G.S.; Conway, M.W.

1994-08-01T23:59:59.000Z

234

Gold and Black Group Paws Training Plans Gold Group Black Group  

E-Print Network (OSTI)

Gold and Black Group Paws Training Plans Gold Group Black Group Week Day Distance Description Day://www.badgerlandstriders.org/home/Races/TheDeerRun.htm. Black Group The goal of the Black Group is to go from moderate running to 13 miles over a ten week include periodic walking breaks as needed. The Black Group should run four days a week on a Monday

Saldin, Dilano

235

Rotating Black Holes with Monopole Hair  

E-Print Network (OSTI)

We study rotating black holes in Einstein-Yang-Mills-Higgs theory. These black holes emerge from static black holes with monopole hair when a finite horizon angular velocity is imposed. At critical values of the horizon angular velocity and the horizon radius, they bifurcate with embedded Kerr-Newman black holes. The non-Abelian black holes possess an electric dipole moment, but no electric charge is induced by the rotation. We deduce that gravitating regular monopoles possess a gyroelectric ratio g_el=2.

B. Kleihaus; J. Kunz; F. Navarro-Lerida

2004-06-23T23:59:59.000Z

236

Black Hole Radiation and Volume Statistical Entropy  

E-Print Network (OSTI)

The simplest possible equation for Hawking radiation, and other black hole radiated power is derived in terms of black hole density. Black hole density also leads to the simplest possible model of a gas of elementary constituents confined inside a gravitational bottle of Schwarzchild radius at tremendous pressure, which yields identically the same functional dependence as the traditional black hole entropy. Variations of Sbh can be obtained which depend on the occupancy of phase space cells. A relation is derived between the constituent momenta and the black hole radius which is similar to the Compton wavelength relation.

Mario Rabinowitz

2005-06-03T23:59:59.000Z

237

Black holes: from stars to galaxies  

E-Print Network (OSTI)

While until recently they were often considered as exotic objects of dubious existence, in the last decades there have been overwhelming observational evidences for the presence of stellar mass black holes in binary systems, supermassive black holes at the centers of galaxies, and possibly, intermediate-mass black holes observed as ultraluminous X-ray sources in nearby galaxies. Black holes are now widely accepted as real physical entities that play an important role in several areas of modern astrophysics. Here I review the concluding remarks of the IAU Sympposium No 238 on Black Holes, with particular emphasis on the topical questions in this area of research.

I. F. Mirabel

2006-12-07T23:59:59.000Z

238

Accelerating and rotating black holes  

E-Print Network (OSTI)

An exact solution of Einstein's equations which represents a pair of accelerating and rotating black holes (a generalised form of the spinning C-metric) is presented. The starting point is a form of the Plebanski-Demianski metric which, in addition to the usual parameters, explicitly includes parameters which describe the acceleration and angular velocity of the sources. This is transformed to a form which explicitly contains the known special cases for either rotating or accelerating black holes. Electromagnetic charges and a NUT parameter are included, the relation between the NUT parameter $l$ and the Plebanski-Demianski parameter $n$ is given, and the physical meaning of all parameters is clarified. The possibility of finding an accelerating NUT solution is also discussed.

J. B. Griffiths; J. Podolsky

2005-07-06T23:59:59.000Z

239

Electrically charged dilatonic black rings  

E-Print Network (OSTI)

In this note we present (electrically) charged dilatonic black ring solutions of the Einstein-Maxwell-dilaton theory in five dimensions and we consider their physical properties. These solutions are static and as in the neutral case possess a conical singularity. We show how one may remove the conical singularity by application of a Harrison transformation, which physically corresponds to supporting the charged ring with an electric field. Finally, we discuss the slowly rotating case for arbitrary dilaton coupling.

Hari K. Kunduri; James Lucietti

2004-12-14T23:59:59.000Z

240

Kenaf Black Liquor Gasification Study  

Science Conference Proceedings (OSTI)

Vision Paper (Albuquerque, New Mexico) is considering building a pulping mill in Tennessee. This study is a first step in determining if the gasification of black liquor derived from kenaf8212an annual fiber and a substitute for softwood in the pulping process8212would allow Vision Paper to meet strict environmental regulations while generating process steam for its pulp mill. In collaboration with USDA, Vision Paper previously developed a soda-AQ (anthraquninone) process for producing high-quality pulp ...

2006-11-14T23:59:59.000Z

Note: This page contains sample records for the topic "black warrior paradox" 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

Black Hole Thermodynamics and Electromagnetism  

E-Print Network (OSTI)

We show a strong parallel between the Hawking, Beckenstein black hole Thermodynamics and electromagnetism: When the gravitational coupling constant transform into the electromagnetic coupling constant, the Schwarzchild radius, the Beckenstein temperature, the Beckenstein decay time and the Planck mass transform to respectively the Compton wavelength, the Hagedorn temperature, the Compton time and a typical elementary particle mass. The reasons underlying this parallalism are then discussed in detail.

Burra G. Sidharth

2005-07-15T23:59:59.000Z

242

Performance evaluation of two black nickel and two black chrome solar collectors  

DOE Green Energy (OSTI)

This test program was based on the evaluation of four unique solar collectors described as follows: (a) black nickel collector surface with a desiccant drying bed, (b) black nickel collector surface without a desiccant drying bed, (c) black chrome collector surface with a dessicant drying bed, and (d) black chrome collector surface without a desiccant drying bed. The test program included three distinct phases: Initial performance evaluation, natural environmental aging, and post-aging performance evaluation. Results of Phase III testing conclusively indicated a higher normalized efficiency for black chrome surfaces when compared to black nickel. Analysis of these results is shown. The results are tabulated.

Losey, R.

1977-11-01T23:59:59.000Z

243

Negotiating the paradoxes of poverty: presidential rhetoric on welfare from Johnson to Clinton  

E-Print Network (OSTI)

This project examines how Presidents Lyndon Johnson, Richard Nixon, Jimmy Carter, Ronald Reagan, and Bill Clinton discussed issues of poverty and welfare from Johnson?s declaration of War on Poverty in 1964 to Clinton?s signing of the Personal Responsibility and Work Opportunity Reconciliation Act in 1996. I argue that there are four critical tensions relevant to the debate concerning contemporary poverty in the United States?politics vs. policy, deserving vs. undeserving, help vs. hinder, and equality vs. freedom?and the key to improving the manner in which the nation confronts the problem of poverty requires understanding and negotiating these tensions. The analysis reveals that the five presidents had a mixed but overall rather poor record in confronting the four paradoxes. In general they tended either to avoid the tensions altogether, or fall to one or the other extreme. That being said, the analysis also reveals that there is considerable common ground concerning some critical issues between all the presidents, whether they were Democrats or Republicans, ideologically moderate or more partisan. Foremost among these are the beliefs that equal opportunity should be the overarching ideal, work should be rewarded well, and those that cannot help themselves should be supported as generously as possible by the government. I conclude that the 1996 law, while based in part on questionable assumptions concerning the condition of the poor, could lead to a significant re-framing of the debate away from the generally unpopular focus on welfare and welfare recipients and toward the working poor and the conditions and difficulties under which they labor, which could potentially lead to other positive transformations beneficial to the American poor.

Carcasson, Martin

2004-12-01T23:59:59.000Z

244

Black Same-Sex Couples in California: Data from Census 2000  

E-Print Network (OSTI)

Households included in black households had a householderwho identified as an black. Seventy-eight percentsame-sex couples that include an black had an black as the

Gates, Gary; Sears, Brad

2005-01-01T23:59:59.000Z

245

Black Mountain Insulation | Open Energy Information  

Open Energy Info (EERE)

Insulation Insulation Jump to: navigation, search Name Black Mountain Insulation Place United Kingdom Sector Carbon Product UK-based manufacturer of sheeps wool insulation which has a low carbon footprint than traditional glassfiber insulation. Website http://www.blackmountaininsula References Black Mountain Insulation Website[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Black Mountain Insulation is a company located in United Kingdom. It was formerly known as Ochre Natural Insulation Company. [2] References ↑ "Black Mountain Insulation Website" ↑ http://www.companiesintheuk.co.uk/ltd/black-mountain-insulation Retrieved from "http://en.openei.org/w/index.php?title=Black_Mountain_Insulation&oldid=391648

246

Combustion properties of Kraft Black Liquors  

DOE Green Energy (OSTI)

In a previous study of the phenomena involved in the combustion of black liquor droplets a numerical model was developed. The model required certain black liquor specific combustion information which was then not currently available, and additional data were needed for evaluating the model. The overall objectives of the project reported here was to provide experimental data on key aspects of black liquor combustion, to interpret the data, and to put it into a form which would be useful for computational models for recovery boilers. The specific topics to be investigated were the volatiles and char carbon yields from pyrolysis of single black liquor droplets; a criterion for the onset of devolatilization and the accompanying rapid swelling; and the surface temperature of black liquor droplets during pyrolysis, combustion, and gasification. Additional information on the swelling characteristics of black liquor droplets was also obtained as part of the experiments conducted.

Frederick, W.J. Jr.; Hupa, M. (Aabo Akademi, Turku (Finland))

1993-04-01T23:59:59.000Z

247

Modeling Flows Around Merging Black Hole Binaries  

E-Print Network (OSTI)

Coalescing massive black hole binaries are produced by the mergers of galaxies. The final stages of the black hole coalescence produce strong gravitational radiation that can be detected by the space-borne LISA. In cases where the black hole merger takes place in the presence of gas and magnetic fields, various types of electromagnetic signals may also be produced. Modeling such electromagnetic counterparts of the final merger requires evolving the behavior of both gas and fields in the strong-field regions around the black holes. We have taken a step towards solving this problem by mapping the flow of pressureless matter in the dynamic, 3-D general relativistic spacetime around the merging black holes. We find qualitative differences in collision and outflow speeds, including a signature of the merger when the net angular momentum of the matter is low, between the results from single and binary black holes, and between nonrotating and rotating holes in binaries. If future magnetohydrodynamic results confirm ...

van Meter, James R; Miller, M Coleman; Reynolds, Christopher S; Centrella, Joan M; Baker, John G; Boggs, William D; Kelly, Bernard J; McWilliams, Sean T

2009-01-01T23:59:59.000Z

248

Gravitational fields with sources, regular black holes, quasiblack holes, and analogue black holes  

E-Print Network (OSTI)

We discuss recent developments in gravitational fields with sources, regular black holes, quasiblack holes, and analogue black holes, related to the talks presented at the corresponding Parallel Session AT3 of the 13th Marcel Grossmann Meeting.

Lemos, Jos P S

2013-01-01T23:59:59.000Z

249

Magnetized black holes and black rings in the higher dimensional dilaton gravity  

E-Print Network (OSTI)

In this paper we consider magnetized black holes and black rings in the higher dimensional dilaton gravity. Our study is based on exact solutions generated by applying a Harrison transformation to known asymptotically flat black hole and black ring solutions in higher dimensional spacetimes. The explicit solutions include the magnetized version of the higher dimensional Schwarzschild-Tangherlini black holes, Myers-Perry black holes and five dimensional (dipole) black rings. The basic physical quantities of the magnetized objects are calculated. We also discuss some properties of the solutions and their thermodynamics. The ultrarelativistic limits of the magnetized solutions are briefly discussed and an explicit example is given for the $D$-dimensional magnetized Schwarzschild-Tangherlini black holes.

Stoytcho S. Yazadjiev

2005-11-21T23:59:59.000Z

250

Chattanooga Eagle Ford Western Gulf TX-LA-MS Salt Basin Uinta Basin  

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

Western Western Gulf TX-LA-MS Salt Basin Uinta Basin Devonian (Ohio) Marcellus Utica Bakken*** Avalon- Bone Spring San Joaquin Basin Monterey Santa Maria, Ventura, Los Angeles Basins Monterey- Temblor Pearsall Tuscaloosa Big Horn Basin Denver Basin Powder River Basin Park Basin Niobrara* Mowry Niobrara* Heath** Manning Canyon Appalachian Basin Antrim Barnett Bend New Albany Woodford Barnett- Woodford Lewis Hilliard- Baxter- Mancos Excello- Mulky Fayetteville Floyd- Neal Gammon Cody Haynesville- Bossier Hermosa Mancos Pierre Conasauga Michigan Basin Ft. Worth Basin Palo Duro Basin Permian Basin Illinois Basin Anadarko Basin Greater Green River Basin Cherokee Platform San Juan Basin Williston Basin Black Warrior Basin A r d m o r e B a s i n Paradox Basin Raton Basin Montana Thrust Belt Marfa Basin Valley & Ridge Province Arkoma Basin Forest

251

Chattanooga Eagle Ford Rio Grande Embayment Texas- Louisiana-  

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

Rio Grande Rio Grande Embayment Texas- Louisiana- Mississippi Salt Basin Uinta Basin Appa lachia n Basin Utica Marcellus Devonian (Ohio) Antrim Barnett Bend New Albany Woodford Barnett- Woodford Lewis Hilliard- Baxter- Mancos Excello- Mulky Fayetteville Floyd- Neal Gammon Cody Haynesville Hermosa Mancos Pierre Conasauga Woodford- Caney Pearsall- Eagle Ford Michigan Basin Ft. Worth Basin Palo Duro Basin Permian Basin Illinois Basin Anadarko Basin Greater Green River Basin Cherokee Platform San Juan Basin Williston Basin Black Warrior Basin A r d m o r e B a s i n Paradox Basin Raton Basin Maverick Sub-Basin Montana Thrust Belt Marfa Basin Valley and Ridge Province Arkoma Basin Forest City Basin Piceance Basin Shale Gas Plays, Lower 48 States 0 200 400 100 300 Miles ± Source: Energy Information Administration based on data from various published studies

252

Multi-clad black display panel  

DOE Patents (OSTI)

A multi-clad black display panel, and a method of making a multi-clad black display panel, are disclosed, wherein a plurality of waveguides, each of which includes a light-transmissive core placed between an opposing pair of transparent cladding layers and a black layer disposed between transparent cladding layers, are stacked together and sawed at an angle to produce a wedge-shaped optical panel having an inlet face and an outlet face.

Veligdan, James T. (Manorville, NY); Biscardi, Cyrus (Bellport, NY); Brewster, Calvin (North Patchogue, NY)

2002-01-01T23:59:59.000Z

253

Black Hole Information as Topological Qubits  

E-Print Network (OSTI)

The principle of balanced holography, introduced in [1], posits that black hole information is stored in non-local correlations between the interior and exterior. Based on this concept, we propose that black hole information decomposes into elementary units in the form of topological qubits, and is protected from local sources of decoherence. The topological protection mechanism ensures that the horizon of an evaporating black hole stays young and smooth.

Erik Verlinde; Herman Verlinde

2013-06-03T23:59:59.000Z

254

Black Hole Information as Topological Qubits  

E-Print Network (OSTI)

The principle of balanced holography, introduced in [1], posits that black hole information is stored in non-local correlations between the interior and exterior. Based on this concept, we propose that black hole information decomposes into elementary units in the form of topological qubits, and is protected from local sources of decoherence. The topological protection mechanism ensures that the horizon of an evaporating black hole stays young and smooth.

Verlinde, Erik

2013-01-01T23:59:59.000Z

255

Red-black Trees To know what a red-black tree is (10.1).  

E-Print Network (OSTI)

809 CHAPTER 10 Red-black Trees Objectives · To know what a red-black tree is (§10.1). · To convert a red-black tree to a 2-4 tree and vice versa (§10.2). · To design the RBTree class that extends the BinaryTree class (§10.3). · To insert an element in a red-black tree and resolve the double red problem

Liang, Y. Daniel

256

ChangeinImportanceValue BlackCherry  

E-Print Network (OSTI)

-30.0 -20.0 -10.0 0.0 10.0 20.0 30.0 ChangeinImportanceValue 1987-2004 BlackCherry YellowPoplar Red&Black measurement periods. -30.0 -20.0 -10.0 0.0 10.0 20.0 30.0 ChangeinImportanceValue 1987-2004 BlackCherry YellowPoplar Red&BlackOak WhiteOak OtherOak SugarMaple RedMaple WhiteAsh Miscellaneous Species Group Aspect Code 1

257

Black Hills Energy (Electric) - Residential Energy Efficiency...  

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

unit Freezer: 30unit Dishwasher: 30unit RefrigeratorFreezer Recycling: 50unit CFLLED Bulbs: In-store rebates Black Hills Energy (BHE) offers rebates for residential...

258

Strings, black holes, and quantum information  

SciTech Connect

We find multiple relations between extremal black holes in string theory and 2- and 3-qubit systems in quantum information theory. We show that the entropy of the axion-dilaton extremal black hole is related to the concurrence of a 2-qubit state, whereas the entropy of the STU black holes, Bogomol'nyi-Prasad-Sommerfield (BPS) as well as non-BPS, is related to the 3-tangle of a 3-qubit state. We relate the 3-qubit states with the string theory states with some number of D-branes. We identify a set of large black holes with the maximally entangled Greenberger, Horne, Zeilinger (GHZ) class of states and small black holes with separable, bipartite, and W states. We sort out the relation between 3-qubit states, twistors, octonions, and black holes. We give a simple expression for the entropy and the area of stretched horizon of small black holes in terms of a norm and 2-tangles of a 3-qubit system. Finally, we show that the most general expression for the black hole and black ring entropy in N=8 supergravity/M theory, which is given by the famous quartic Cartan E{sub 7(7)} invariant, can be reduced to Cayley's hyperdeterminant describing the 3-tangle of a 3-qubit state.

Kallosh, Renata; Linde, Andrei [Department of Physics, Stanford University, Stanford, California 94305 (United States)

2006-05-15T23:59:59.000Z

259

Superconducting Hair on Charged Black String Background  

E-Print Network (OSTI)

Behaviour of Dirac fermions in the background of a charged black string penetrated by an Abelian Higgs vortex is elaborated. One finds the evidence that the system under consideration can support fermion fields acting like a superconducting cosmic string in the sence that a nontrivial Dirac fermion field can be carried by the system in question. The case of nonextremal and extremal black string vortex systems were considered. The influence of electric and Higgs charge, the winding number and the fermion mass on the fermion localization near the black string event horizon was studied. It turned out that the extreme charged black string expelled fermion fields more violently comparing to the nonextremal one.

Lukasz Nakonieczny; Marek Rogatko

2012-01-25T23:59:59.000Z

260

The Black Shale Basin of West Texas.  

E-Print Network (OSTI)

??The Black Shale Basin of West Texas covers an area in excess of 21,000 square miles and includes the region from Terrell and Pecos Counties (more)

Cole, Charles Taylor, 1913-

2012-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "black warrior paradox" 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.


261

Rotating Einstein-Yang-Mills Black Holes  

E-Print Network (OSTI)

We construct rotating hairy black holes in SU(2) Einstein-Yang-Mills theory. These stationary axially symmetric black holes are asymptotically flat. They possess non-trivial non-Abelian gauge fields outside their regular event horizon, and they carry non-Abelian electric charge. In the limit of vanishing angular momentum, they emerge from the neutral static spherically symmetric Einstein-Yang-Mills black holes, labelled by the node number of the gauge field function. With increasing angular momentum and mass, the non-Abelian electric charge of the solutions increases, but remains finite. The asymptotic expansion for these black hole solutions includes non-integer powers of the radial variable.

B. Kleihaus; J. Kunz; F. Navarro-Lerida

2002-07-10T23:59:59.000Z

262

The EU Black Sea Synergy : An Analysis.  

E-Print Network (OSTI)

??The Black Sea is an enclosed sea, which is situated between Europe and Asia and is surrounded by Bulgaria, Georgia, Romania, Russia, Turkey and Ukraine. (more)

Varol, Songul

2009-01-01T23:59:59.000Z

263

Black Forest Partners | Open Energy Information  

Open Energy Info (EERE)

Partners Jump to: navigation, search Name Black Forest Partners Place San Francisco, California Zip 94111 Product San Francisco-based project developer focused on building...

264

"Black Pride Days," 1965-1970.  

E-Print Network (OSTI)

??On Friday, April 5, 1968, over 250 African American students at William Penn Senior High School skipped their classes to attend Black Pride Day. The (more)

Wright, Dwayne Cowles

2005-01-01T23:59:59.000Z

265

Black Hills Power- Residential Customer Rebate Program  

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

Black Hills Power offers cash rebates to residential customers who purchase and install energy efficient equipment in their homes. Incentives exist for water heaters, demand control units, air...

266

Strengthening Our Partnerships with Historically Black Colleges...  

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

President Haysbert discussed Langston University's partnership with the Department, the Oklahoma Black Farmers and Agriculturalists Association, and others to explore the market...

267

Black hole discharge in massive electrodynamics and black hole disappearance in massive gravity  

E-Print Network (OSTI)

We define and calculate the "discharge mode" for a Schwarzschild black hole in massive electrodynamics. For small photon mass, the discharge mode describes the decay of the electric field of a charged star collapsing into a black hole. We argue that a similar "discharge of mass" occurs in massive gravity and leads to a strange process of black hole disappearance.

Mirbabayi, Mehrdad

2013-01-01T23:59:59.000Z

268

Causticizing for Black Liquor Gasifiers  

SciTech Connect

The cost-benefit outlook of black liquor gasification (BLG) could be greatly improved if the smelt causticization step could be achieved in situ during the gasification step. Or, at a minimum, the increase in causticizing load associated with BLG could be mitigated. A number of chemistries have been proven successful during black liquor combustion. In this project, three in situ causticizing processes (titanate, manganate, and borate) were evaluated under conditions suitable for high temperature entrained flow BLG, and low temperature steam reforming of black liquor. The evaluation included both thermodynamic modeling and lab experimentation. Titanate and manganate were tested for complete direct causticizing (to thus eliminate the lime cycle), and borates were evaluated for partial causticizing (to mitigate the load increase associated with BLG). Criteria included high carbonate conversion, corresponding hydroxide recovery upon hydrolysis, non process element (NPE) removal, and economics. Of the six cases (three chemistries at two BLG conditions), only two were found to be industrially viable: titanates for complete causticizing during high temperature BLG, and borates for partial causticizing during high temperature BLG. These two cases were evaluated for integration into a gasification-based recovery island. The Larsen [28] BLG cost-benefit study was used as a reference case for economic forecasting (i.e. a 1500 tpd pulp mill using BLG and upgrading the lime cycle). By comparison, using the titanate direct causticizing process yielded a net present value (NPV) of $25M over the NPV of BLG with conventional lime cycle. Using the existing lime cycle plus borate autocausticizing for extra capacity yielded a NPV of $16M.

Scott Sinquefeld; James Cantrell; Xiaoyan Zeng; Alan Ball; Jeff Empie

2009-01-07T23:59:59.000Z

269

Towards a Solution to the Early Faint Sun Paradox: A Lower Cosmic Ray Flux from a Stronger Solar Wind  

E-Print Network (OSTI)

Standard solar models predict a solar luminosity that gradually increased by about 30% over the past 4.5 billion years. Under the faint sun, Earth should have been frozen solid for most of its existence. Yet, running water is observed to have been present since very early in Earth's history. This enigma is known as the faint sun paradox. We show here that it can be partially resolved once we consider the cooling effect that cosmic rays are suspected to have on the global climate and that the younger sun must have had a stronger solar wind, such that it was more effective at stopping cosmic rays from reaching Earth. The paradox can then be completely resolved with the further contribution of modest greenhouse gas warming. When we add the cosmic ray flux modulation by a variable star formation rate in the Milky Way, we recover the long term glacial activity on Earth. As to the future, we find that the average global temperature will increase by typically 10K in the coming 2 Gyr.

Nir J. Shaviv

2003-06-23T23:59:59.000Z

270

Black holes in supergravity: the non-BPS branch  

E-Print Network (OSTI)

The Seed Solution: Non-BPS Black Holes with 5nd that the mass of the non-BPS black hole remains that of aconstruction of regular black hole solutions in supergravity

Gimon, Eric G.

2008-01-01T23:59:59.000Z

271

Primordial Black Holes - Recent Developments  

E-Print Network (OSTI)

Recent developments in the study of primordial black holes (PBHs) will be reviewed, with particular emphasis on their formation and evaporation. PBHs could provide a unique probe of the early Universe, gravitational collapse, high energy physics and quantum gravity. Indeed their study may place interesting constraints on the physics relevant to these areas even if they never formed. In the "early Universe" context, particularly useful constraints can be placed on inflationary scenarios, especially if evaporating PBHs leave stable Planck-mass relicts. In the "gravitational collapse" context, the existence of PBHs could provide a unique test of the sort of critical phenomena discovered in recent numerical calculations. In the "high energy physics" context, information may come from gamma-ray bursts (if a subset of these are generated by PBH explosions) or from cosmic rays (if some of these derive from evaporating PBHs). In the "quantum gravity" context, the formation and evaporation of small black holes could lead to observable signatures in cosmic ray events and accelerator experiments, providing there are extra dimensions and providing the quantum gravity scale is around a TeV.

B. J. Carr

2005-04-01T23:59:59.000Z

272

Refractory for Black Liquor Gasifiers  

SciTech Connect

The University of Missouri-Rolla will identify materials that will permit the safe, reliable and economical operation of combined cycle gasifiers by the pulp and paper industry. The primary emphasis of this project will be to resolve the materials problems encountered during the operation of low-pressure high-temperature (LFHT) and low-pressure low-temperature (LPLT) gasifiers while simultaneously understanding the materials barriers to the successful demonstration of high-pressure high-temperature (HPHT) black liquor gasifiers. This study will define the chemical, thermal and physical conditions in current and proposed gasifier designs and then modify existing materials and develop new materials to successfully meet the formidable material challenges. Resolving the material challenges of black liquor gasification combined cycle technology will provide energy, environmental, and economic benefits that include higher thermal efficiencies, up to three times greater electrical output per unit of fuel, and lower emissions. In the near term, adoption of this technology will allow the pulp and paper industry greater capital effectiveness and flexibility, as gasifiers are added to increase mill capacity. In the long term, combined-cycle gasification will lessen the industry's environmental impact while increasing its potential for energy production, allowing the production of all the mill's heat and power needs along with surplus electricity being returned to the grid. An added benefit will be the potential elimination of the possibility of smelt-water explosions, which constitute an important safety concern wherever conventional Tomlinson recovery boilers are operated. Developing cost-effective materials with improved performance in gasifier environments may be the best answer to the material challenges presented by black liquor gasification. Refractory materials may be selected/developed that either react with the gasifier environment to form protective surfaces in-situ; are functionally-graded to give the best combination of thermal, mechanical, and physical properties and chemical stability; or are relatively inexpensive, reliable repair materials. Material development will be divided into 2 tasks: Task 1, Development and property determinations of improved and existing refractory systems for black liquor containment. Refractory systems of interest include magnesia aluminate and baria aluminate spinels for binder materials, both dry and hydratable, and materials with high alumina contents, 85-95 wt%, aluminum oxide, 5.0-15.0 wt%, and BaO, SrO, CaO, ZrO and SiC. Task 2, Finite element analysis of heat flow and thermal stress/strain in the refractory lining and steel shell of existing and proposed vessel designs. Stress and strain due to thermal and chemical expansion has been observed to be detrimental to the lifespan of existing black liquor gasifiers. The thermal and chemical strain as well as corrosion rates must be accounted for in order to predict the lifetime of the gasifier containment materials.

William L. Headrick Jr; Alireza Rezaie

2003-12-01T23:59:59.000Z

273

REFRACTORY FOR BLACK LIQUOR GASIFIERS  

SciTech Connect

The University of Missouri-Rolla will identify materials that will permit the safe, reliable and economical operation of combined cycle gasifiers by the pulp and paper industry. The primary emphasis of this project will be to resolve the materials problems encountered during the operation of low-pressure high-temperature (LFHT) and low-pressure low-temperature (LPLT) gasifiers while simultaneously understanding the materials barriers to the successful demonstration of high-pressure high-temperature (HPHT) black liquor gasifiers. This study will define the chemical, thermal and physical conditions in current and proposed gasifier designs and then modify existing materials and develop new materials to successfully meet the formidable material challenges. Resolving the material challenges of black liquor gasification combined cycle technology will provide energy, environmental, and economic benefits that include higher thermal efficiencies, up to three times greater electrical output per unit of fuel, and lower emissions. In the near term, adoption of this technology will allow the pulp and paper industry greater capital effectiveness and flexibility, as gasifiers are added to increase mill capacity. In the long term, combined-cycle gasification will lessen the industry's environmental impact while increasing its potential for energy production, allowing the production of all the mill's heat and power needs along with surplus electricity being returned to the grid. An added benefit will be the potential elimination of the possibility of smelt-water explosions, which constitute an important safety concern wherever conventional Tomlinson recovery boilers are operated. Developing cost-effective materials with improved performance in gasifier environments may be the best answer to the material challenges presented by black liquor gasification. Refractory materials may be selected/developed that either react with the gasifier environment to form protective surfaces in-situ; are functionally-graded to give the best combination of thermal, mechanical, and physical properties and chemical stability; or are relatively inexpensive, reliable repair materials. Material development will be divided into 2 tasks: Task 1, Development and property determinations of improved and existing refractory systems for black liquor containment. Refractory systems of interest include magnesia aluminate and baria aluminate spinels for binder materials, both dry and hydratable, and materials with high alumina contents, 85-95 wt%, aluminum oxide, 5.0-15.0 wt%, and BaO, SrO, CaO, ZrO and SiC. Task 2, Finite element analysis of heat flow and thermal stress/strain in the refractory lining and steel shell of existing and proposed vessel designs. Stress and strain due to thermal and chemical expansion has been observed to be detrimental to the lifespan of existing black liquor gasifiers. The thermal and chemical strain as well as corrosion rates must be accounted for in order to predict the lifetime of the gasifier containment materials.

William L. Headrick Jr.; Alireza Rezaie

2003-12-01T23:59:59.000Z

274

Refractory for Black Liquor Gasifiers  

SciTech Connect

The University of Missouri-Rolla identified materials that permit the safe, reliable and economical operation of combined cycle gasifiers by the pulp and paper industry. The primary emphasis of this project was to resolve the material problems encountered during the operation of low-pressure high-temperature (LPHT) and low-pressure low-temperature (LPLT) gasifiers while simultaneously understanding the materials barriers to the successful demonstration of high-pressure high-temperature (HPHT) black liquor gasifiers. This study attempted to define the chemical, thermal and physical conditions in current and proposed gasifier designs and then modify existing materials and develop new materials to successfully meet the formidable material challenges. Resolving the material challenges of black liquor gasification combined cycle technology will provide energy, environmental, and economic benefits that include higher thermal efficiencies, up to three times greater electrical output per unit of fuel, and lower emissions. In the near term, adoption of this technology will allow the pulp and paper industry greater capital effectiveness and flexibility, as gasifiers are added to increase mill capacity. In the long term, combined-cycle gasification will lessen the industry's environmental impact while increasing its potential for energy production, allowing the production of all the mill's heat and power needs along with surplus electricity being returned to the grid. An added benefit will be the potential elimination of the possibility of smelt-water explosions, which constitute an important safety concern wherever conventional Tomlinson recovery boilers are operated. Developing cost-effective materials with improved performance in gasifier environments may be the best answer to the material challenges presented by black liquor gasification. Refractory materials were selected/developed that either react with the gasifier environment to form protective surfaces in-situ; and were functionally-graded to give the best combination of thermal, mechanical, and physical properties and chemical stability; or are relatively inexpensive, reliable repair materials. Material development were divided into 2 tasks: Task 1, Development and property determinations of improved and existing refractory systems for black liquor containment. Refractory systems of interest include magnesium aluminate and barium aluminate for binder materials, both dry and hydratable, and materials with high alumina contents, 85-95 wt%, aluminum oxide, 5.0-15.0 wt%, and BaO, SrO, CaO, ZrO{sub 2} and SiC. Task 2, Finite element analysis of heat flow and thermal stress/strain in the refractory lining and steel shell of existing and proposed vessel designs. Stress and strain due to thermal and chemical expansion has been observed to be detrimental to the lifespan of existing black liquor gasifiers. The thermal and chemical strain as well as corrosion rates must be accounted for in order to predict the lifetime of the gasifier containment materials.

William L. Headrick Jr; Musa Karakus; Xiaoting Liang

2005-10-01T23:59:59.000Z

275

Refractory for Black Liquor Gasifiers  

Science Conference Proceedings (OSTI)

The University of Missouri-Rolla identified materials that permit the safe, reliable and economical operation of combined cycle gasifiers by the pulp and paper industry. The primary emphasis of this project was to resolve the material problems encountered during the operation of low-pressure high-temperature (LPHT) and low-pressure low-temperature (LPLT) gasifiers while simultaneously understanding the materials barriers to the successful demonstration of high-pressure high-temperature (HPHT) black liquor gasifiers. This study attempted to define the chemical, thermal and physical conditions in current and proposed gasifier designs and then modify existing materials and develop new materials to successfully meet the formidable material challenges. Resolving the material challenges of black liquor gasification combined cycle technology will provide energy, environmental, and economic benefits that include higher thermal efficiencies, up to three times greater electrical output per unit of fuel, and lower emissions. In the near term, adoption of this technology will allow the pulp and paper industry greater capital effectiveness and flexibility, as gasifiers are added to increase mill capacity. In the long term, combined-cycle gasification will lessen the industry's environmental impact while increasing its potential for energy production, allowing the production of all the mill's heat and power needs along with surplus electricity being returned to the grid. An added benefit will be the potential elimination of the possibility of smelt-water explosions, which constitute an important safety concern wherever conventional Tomlinson recovery boilers are operated. Developing cost-effective materials with improved performance in gasifier environments may be the best answer to the material challenges presented by black liquor gasification. Refractory materials were selected or developed that reacted with the gasifier environment to form protective surfaces in-situ; and were functionally-graded to give the best combination of thermal, mechanical and physical properties and chemical stability; and are relatively inexpensive, reliable repair materials. Material development was divided into 2 tasks: Task 1 was development and property determinations of improved and existing refractory systems for black liquor containment. Refractory systems of interest include magnesium aluminate and barium aluminate for binder materials, both dry and hydratable, and materials with high alumina contents, 85-95 wt%, aluminum oxide, 5.0-15.0 wt%, and BaO, SrO, CaO, ZrO2 and SiC. Task 2 was finite element analysis of heat flow and thermal stress/strain in the refractory lining and steel shell of existing and proposed vessel designs. Stress and strain due to thermal and chemical expansion has been observed to be detrimental to the lifespan of existing black liquor gasifiers. The thermal and chemical strain as well as corrosion rates must be accounted for in order to predict the lifetime of the gasifier containment materials.

William L. Headrick Jr; Alireza Rezaie; Xiaoting Liang; Musa Karakus; Jun Wei

2005-12-01T23:59:59.000Z

276

Black Holes at the LHC: Progress since 2002  

E-Print Network (OSTI)

We review the recent noticeable progresses in black hole physics focusing on the up-coming super-collider, the LHC. We discuss the classical formation of black holes by particle collision, the greybody factors for higher dimensional rotating black holes, the deep implications of black hole physics to the `energy-distance' relation, the security issues of the LHC associated with black hole formation and the newly developed Monte-Carlo generators for black hole events.

Seong Chan Park

2008-09-15T23:59:59.000Z

277

CHARYBDIS: A Black hole event generator.  

E-Print Network (OSTI)

]. [15] D. M. Eardley and S. B. Giddings, Classical Black Hole Production in High-Energy Collisions, [gr-qc/0201034]. [16] S. W. Hawking, Particle Creation by Black Holes, Comm. Math. Phys. 43 (1975) 199. [17] R. Emperan, G. T. Horowitz and R. C. Myers...

Harris, Chris M; Richardson, P; Webber, Bryan R

278

Plenary lecture 4: black holes nonholonomic thermodynamics  

Science Conference Proceedings (OSTI)

This Lecture presents the geometry and the interaction of nonholonomic black hole systems using a specialized MAPLE soft for computing. Our point of view is strongly connected to the possibility of describing a nonholonomic black hole system via a Gibbs-Pfaff ...

Constantin Udriste

2010-10-01T23:59:59.000Z

279

I am Black AND Jewish: Black Jewish Womens Experiences in White Jewish Communities in Brazil  

E-Print Network (OSTI)

and the contemporary black movement in Brazil. In R.new identity challenge: Are you black or are you Jewish? 1999). Brazil: Study in Black, Brown and Beige. In Robert

Gondek, Abby S.

2008-01-01T23:59:59.000Z

280

Black Carbon Concentrations and Diesel Vehicle Emission Factors...  

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

Black Carbon Concentrations and Diesel Vehicle Emission Factors Derived from Coefficient of Haze Measurements in California: 1967-2003 Title Black Carbon Concentrations and Diesel...

Note: This page contains sample records for the topic "black warrior paradox" 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.


281

White House Initiative on Historically Black Colleges and Universities...  

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

White House Initiative on Historically Black Colleges and Universities White House Initiative on Historically Black Colleges and Universities How WHI-HBCU are ran White House...

282

Fossil Energy Acting Assistant Secretary Recognized at Black...  

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

Fossil Energy Acting Assistant Secretary Recognized at Black Engineer of the Year Awards Fossil Energy Acting Assistant Secretary Recognized at Black Engineer of the Year Awards...

283

Changes related to "Black Dog, South Dakota" | Open Energy Information  

Open Energy Info (EERE)

page Share this page on Facebook icon Twitter icon Changes related to "Black Dog, South Dakota" Black Dog, South Dakota Jump to: navigation, search This is a list...

284

5th Annual Historically Black Colleges and Universities (HBCU...  

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

5th Annual Historically Black Colleges and Universities (HBCU) Career Development Marketplace 5th Annual Historically Black Colleges and Universities (HBCU) Career Development...

285

Savannah River National Laboratory Meets with Historically Black...  

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

Savannah River National Laboratory Meets with Historically Black Colleges and Universities Savannah River National Laboratory Meets with Historically Black Colleges and...

286

Concentrations of fine, ultrafine, and black carbon particles...  

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

Concentrations of fine, ultrafine, and black carbon particles in auto-rickshaws in New Delhi, India Title Concentrations of fine, ultrafine, and black carbon particles in...

287

"Say It loud, I'm black and I'm proud:" Black power and black nationalist ideology in the formation of the black genealogy movement, 1965-1985.  

E-Print Network (OSTI)

??The purpose of this study is to examine the influence of the Black Power Movement and black cultural nationalism on the surge of interest in (more)

Simmons, Leilani N

288

Aerosol organic carbon to black carbon ratios: Analysis of published...  

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

Aerosol organic carbon to black carbon ratios: Analysis of published data and implications for climate forcing Title Aerosol organic carbon to black carbon ratios: Analysis of...

289

Blacks and the family cap: pregnancy, abortion, and spillovers  

Science Conference Proceedings (OSTI)

Mar 29, 2006 ... reduction in nonmarital birth rates, particularly among black women. This .... rates are 21% lower among blacks impacted by the family cap.

290

Students, Faculty from Historically Black Colleges and Universities...  

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

Students, Faculty from Historically Black Colleges and Universities Share Research with EM Laboratory in Successful Exchange Students, Faculty from Historically Black Colleges and...

291

Black Carbon Emission from Barbeque Activities during College...  

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

Black Carbon Emission from Barbeque Activities during College Football Games Title Black Carbon Emission from Barbeque Activities during College Football Games Publication Type...

292

Reclaiming Blackness: (Counter) Narratives of Racial Kinship in Black Gay Mens Sexual Stories  

E-Print Network (OSTI)

Black gay male identities and their place within the social hierarchy are organized by interlocking systems of race, sexuality, gender and class. This produces the social marginality of black gay men in seemingly neutral ways. Prominent features of this systemic oppression are stock stories of black gay life that construct black gay men as pathological, dangerous, conflicted, inauthentically black, emasculated, and heretical within public and academic discourses. In order to better understand these dynamics and add to the empirical literature on race/sexuality intersections, fifty-two men identifying themselves as black/African American and as having relationships with other men, participated in semi-structured one-on-one interviews which explored their accounts of the structural arrangements, social interactions, and cultural meaning systems that defined the experience of being both black and gay in America. These interviews revealed that black gay men construct rich and complex counter narratives which not only expose the complex structural arrangements, cultural practices and racial ideologies that produce their marginality, but also remediate black gay manhood as part of the black diaspora. These narrative challenges illuminated discursive, performative and cultural practices, as well as social interactions occurring in three areas of the mens lives. First, were strategic uses of a hegemonic masculine form I call the "Super Black Man" (SBM) by which the men counteract the heteronormative, and hypermasculine prerequisites of respectable black masculinity, and represent themselves as racially-conscious and respectable black men. Participants also constructed narrative challenges to those cultural repertoires produced by the black church which organize the dominant scripts of black, Christian identity. These accounts were distinguished by the academic resources they utilized to re-theorize the relationship between Christian faith and the black body, confront the white racial framing and heteronormative assumptions embedded in church doctrine, and transform their outsider status within these communities. Finally participants narratives also illustrate multiple dimensions by which a black racial framing organizes their experiences as black gay men, and their connection to black communities. These negotiations suggest the need to theorize race/sexuality intersections as having both structural and interpretative dimensions and to see the intersection of race and culture as complicating the manifestation of racial inequality.

Chambers, Christopher Scott

2011-05-01T23:59:59.000Z

293

Refractory for Black Liquor Gasifiers  

SciTech Connect

The University of Missouri-Rolla will identify materials that will permit the safe, reliable and economical operation of combined cycle gasifiers by the pulp and paper industry. The primary emphasis of this project will be to resolve the material problems encountered during the operation of low-pressure high-temperature (LPHT) and low-pressure low-temperature (LPLT) gasifiers while simultaneously understanding the materials barriers to the successful demonstration of high-pressure high-temperature (HPHT) black liquor gasifiers. This study will define the chemical, thermal and physical conditions in current and proposed gasifier designs and then modify existing materials and develop new materials to successfully meet the formidable material challenges. Resolving the material challenges of black liquor gasification combined cycle technology will provide energy, environmental, and economic benefits that include higher thermal efficiencies, up to three times greater electrical output per unit of fuel, and lower emissions. In the near term, adoption of this technology will allow the pulp and paper industry greater capital effectiveness and flexibility, as gasifiers are added to increase mill capacity. In the long term, combined-cycle gasification will lessen the industry's environmental impact while increasing its potential for energy production, allowing the production of all the mill's heat and power needs along with surplus electricity being returned to the grid. An added benefit will be the potential elimination of the possibility of smelt-water explosions, which constitute an important safety concern wherever conventional Tomlinson recovery boilers are operated. Developing cost-effective materials with improved performance in gasifier environments may be the best answer to the material challenges presented by black liquor gasification. Refractory materials may be selected/developed that either react with the gasifier environment to form protective surfaces in-situ; are functionally-graded to give the best combination of thermal, mechanical, and physical properties and chemical stability; or are relatively inexpensive, reliable repair materials. This report covers Task 1.4, Industrial Trial of candidate materials developed by refractory producers and in the laboratory based on the results of Task 1.1, 1.2 and 1.3. Refractories provided by in-kind sponsors to industrial installations tested by cup testing, density/porosity determinations, chemical analysis and microscopy. None of the materials produced in this program have been tried in high temperature gasifiers, but the mortar developed Morcocoat SP-P is outperforming other mortars tested at ORNL. MORCO PhosGun M-90-O has shown in laboratory testing to be an acceptable candidate for hot and cold repairs of existing high temperature gasifiers. It may prove to be an acceptable lining material.

William L. Headrick Jr; Musa Karakus; Xiaoting Laing

2005-10-01T23:59:59.000Z

294

Exploring a Full-Sized Black Hole 30 This black ball shown below is the exact size of a black hole with a  

E-Print Network (OSTI)

Exploring a Full-Sized Black Hole 30 This black ball shown below is the exact size of a black hole with a diameter of 9.0 centimeters. Such a black hole would have a mass of 5 times the mass of our Earth. All of this mass would be INSIDE the ball below. Although it looks pretty harmless, if this black hole were at arms

295

The history of black nationalism and internal factors that prevented the founding of an independent black nation-state.  

E-Print Network (OSTI)

??This thesis examined the political history of Black Nationalism in America in order to determine those internal organizational factors that have prevented Black Nationalists, specifically (more)

Fleming, Kenvatta J

296

I Am Black and Beautiful: An Examiniaton of the Black Coptic Church as the Manifestation of Liberation Theology.  

E-Print Network (OSTI)

?? What does the Black Coptic Church have to offer the study of Black theology? This is the essential question this dissertation seeks to examine (more)

McKinnis, Leonard

2010-01-01T23:59:59.000Z

297

SSA Old Black Spruce Site  

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

SSA-OBS) SSA-OBS) View an aerial photo-map of the SSA-OBS site. The 1.3 km road and boardwalk from OBS (facing North) The control box at the base of the flux tower The ARGO ATV used to haul equipment to OBS The double-scaffold flux tower The hut and boardwalk The TE canopy tower Construction during 1993 of the tower site at the Old Black Spruce (SSA-OBS) Trail into SSA-OBS. Large scar and canal created by construction vehicles cutting a new path each visit to avoid being mired in bog. Photograph of construction vehicle in action as it lays the electrical cable into SSA-OBS sites. Tower construction crew working on the foundation for the SSA-OBS tower. Aerial view of double-scaffold flux tower at SSA-OBS site and 100 m cable tramway for transporting the PARABOLA instrument between the flux and Rohn tower.

298

598 The Physics Teacher Vol. 48, December 2010 DOI: 10.1119/1.3517026 paradox problem as we videotaped them. They were given a  

E-Print Network (OSTI)

, Experience and School (National Academies Press, Washington, DC, 1999). Appendix: Twin paradox version. Shaffer, and the Physics Education Group at the University of Washington (Prentice Hall, 1998); R. E is shown in a second window. http://www.compadre.org/OSP/items/detail.cfm?ID=10383 Initial conditions

Steinberg, Richard N.

299

The fuzzball proposal for black holes  

E-Print Network (OSTI)

The fuzzball proposal states that associated with a black hole of entropy S there are exp S horizon-free non-singular solutions that asymptotically look like the black hole but generically differ from the black hole up to the horizon scale. These solutions, the fuzzballs, are considered to be the black hole microstates while the original black hole represents the average description of the system. The purpose of this report is to review current evidence for the fuzzball proposal, emphasizing the use of AdS/CFT methods in developing and testing the proposal. In particular, we discuss the status of the proposal for 2 and 3 charge black holes in the D1-D5 system, presenting new derivations and streamlining the discussion of their properties. Results to date support the fuzzball proposal but further progress is likely to require going beyond the supergravity approximation and sharpening the definition of a "stringy fuzzball". We outline how the fuzzball proposal could resolve longstanding issues in black hole physics, such as Hawking radiation and information loss. Our emphasis throughout is on connecting different developments and identifying open problems and directions for future research.

Kostas Skenderis; Marika Taylor

2008-04-03T23:59:59.000Z

300

Black Hole Thermodynamics and Statistical Mechanics  

E-Print Network (OSTI)

We have known for more than thirty years that black holes behave as thermodynamic systems, radiating as black bodies with characteristic temperatures and entropies. This behavior is not only interesting in its own right; it could also, through a statistical mechanical description, cast light on some of the deep problems of quantizing gravity. In these lectures, I review what we currently know about black hole thermodynamics and statistical mechanics, suggest a rather speculative "universal" characterization of the underlying states, and describe some key open questions.

Steven Carlip

2008-07-28T23:59:59.000Z

Note: This page contains sample records for the topic "black warrior paradox" 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.


301

Some aspects of virtual black holes  

SciTech Connect

We first consider consistently third-quantize modified gravity. We then analyze certain aspects of virtual black holes in this third-quantized modified gravity. We see how a statistical mechanical origin for the Bekenstein-Hawking entropy naturally arises in this model. Furthermore, the area and hence the entropy of a real macroscopic black hole is quantized in this model. Virtual black holes cause a loss of quantum coherence, which gives an intrinsic entropy to all physical systems that can be used to define a direction of time and hence provide a solution to the problem of time.

Faizal, M., E-mail: faizal.mir@durham.ac.uk [University of Durham, Department of Mathematics (United Kingdom)

2012-03-15T23:59:59.000Z

302

Cold black holes and conformal continuations  

E-Print Network (OSTI)

We study Einstein gravity minimally coupled to a scalar field in a static, spherically symmetric space-time in four dimensions. Black hole solutions are shown to exist for a phantom scalar field whose kinetic energy is negative. These ``scalar black holes'' have an infinite horizon area and zero Hawking temperature and are termed ``cold black holes'' (CBHs). The relevant explicit solutions are well-known in the massless case (the so-called anti-Fisher solution), and we have found a particular example of a CBH with a nonzero potential $V(\\phi)$. All CBHs with $V(\\phi) \

K. A. Bronnikov; M. S. Chernakova; J. C. Fabris; N. Pinto-Neto; M. E. Rodrigues

2006-09-20T23:59:59.000Z

303

What Black Holes Can Teach Us  

E-Print Network (OSTI)

Black holes merge together different field of physics. From General Relativity over thermodynamics and quantum field theory, they do now also reach into the regime of particle and collider physics. In the presence of additional compactified dimensions, it would be possible to produce tiny black holes at future colliders. We would be able to test Planck scale physics and the onset of quantum gravity. The understanding of black hole physics is a key knowledge to the phenomenology of these new effects beyond the Standard Model. This article gives a brief introduction into the main issues and is addressed to a non-expert audience.

Sabine Hossenfelder

2004-12-17T23:59:59.000Z

304

Might Dark Matter be Actually Black?  

DOE Green Energy (OSTI)

There have been proposals that primordial black hole remnants (BHRs) are the dark matter, but the idea is somewhat vague. We argue here first that the generalized uncertainty principle (GUP) may prevent black holes from evaporating completely, in a similar way that the standard uncertainty principle prevents the hydrogen atom from collapsing. Secondly we note that the hybrid inflation model provides a plausible mechanism for production of large numbers of small black holes. Combining these we suggest that the dark matter might be composed of Planck-size BHRs and discuss the possible constraints and signatures associated with this notion.

Chen, Pisin

2003-08-06T23:59:59.000Z

305

Thermodynamics of Dyonic Lifshitz Black Holes  

E-Print Network (OSTI)

Black holes with asymptotic anisotropic scaling are conjectured to be gravity duals of condensed matter system close to quantum critical points with non-trivial dynamical exponent z at finite temperature. A holographic renormalization procedure is presented that allows thermodynamic potentials to be defined for objects with both electric and magnetic charge in such a way that standard thermodynamic relations hold. Black holes in asymptotic Lifshitz spacetimes can exhibit paramagnetic behavior at low temperature limit for certain values of the critical exponent z, whereas the behavior of AdS black holes is always diamagnetic.

Tobias Zingg

2011-07-15T23:59:59.000Z

306

APPLICATION FOR PLEASE COMPLETE THIS FORM IN BLACK  

E-Print Network (OSTI)

APPLICATION FOR EMPLOYMENT PLEASE COMPLETE THIS FORM IN BLACK INK OR TYPESCRIPT AND RETURN applicants. For photocopying purposes, please complete this form in black ink. It may be handwritten or typed Black or Black British Caribbean African Other Asian or Asian British Indian Pakistani Bangladeshi

Dahl, Torbjørn Semb

307

e is the coauthor of the Black-Derman-Toy  

E-Print Network (OSTI)

H e is the coauthor of the Black-Derman-Toy interest rate model and the Derman-Kani local been doing for the last 20 years is taking Black-Scholes and applying the same methodol- ogy. He later worked with Fischer Black and BillToy to develop the Black-Derman-Toy model of interest

Derman, Emanuel

308

THE BLACK-EARED MINER A DECADE OF RECOVERY  

E-Print Network (OSTI)

THE BLACK-EARED MINER A DECADE OF RECOVERY David Baker-Gabb 2007 #12;Copyright © 2007. All or otherwise without prior written permission. The Black-eared Miner. A Decade of Recovery. © 2007 Black-eared Miner Recovery Team. Recommended citation: Baker-Gabb, D. (2007). The Black-eared Miner. A Decade

Frappell, Peter

309

Harold Black and the Negative-Feedback Amplifier  

E-Print Network (OSTI)

Harold Black and the Negative-Feedback Amplifier n August 2, 1927,Harold 0Black, a young Bell Labs- cated on West Street in Man- hattan.) Black recalled, "I felt an urge to write but had noth- ing of the newspaper pages used by Black tojot down his early ideas on feedbad (Photo:AT&T Archives) The author

Oriolo, Giuseppe

310

Black Hole Complementary Principle and The Noncommutative Membrane  

E-Print Network (OSTI)

In the spirit of Black Hole Complementary Principle, we have found the noncommutative membrane of Scharzchild Black Holes. In this paper we extend our results to Kerr Black Hole and see the same story. Also we make a conjecture that spacetimes is noncommutative on the stretched membrane of the more general Kerr-Newman Black Hole.

Zen Wei

2005-11-14T23:59:59.000Z

311

Thermodynamics of Schwarzschild-de Sitter black hole: thermal stability of Nariai black hole  

E-Print Network (OSTI)

We study thermodynamics of the Schwarzschild-de Sitter black hole in five dimensions by introducing two temperatures based on the standard and Bousso-Hawking normalizations. We use the first-law of thermodynamics to derive thermodynamic quantities. The two temperatures indicate that the Nariai black hole is thermodynamically unstable. However, it seems that black hole thermodynamics favors the standard normalization, and does not favor the Bousso-Hawking normalization.

Yun Soo Myung

2007-12-20T23:59:59.000Z

312

Thermodynamics of Schwarzschild-de Sitter black hole: thermal stability of Nariai black hole  

E-Print Network (OSTI)

We study thermodynamics of the Schwarzschild-de Sitter black hole in five dimensions by introducing two temperatures based on the standard and Bousso-Hawking normalization. We use the first-law of thermodynamics to derive thermodynamic quantities. The two temperatures indicate that the Nariai black hole is thermodynamically unstable. However, it seems that black hole thermodynamics favors the standard normalization and disfavors the Bousso-Hawking normalization.

Myung, Yun Soo

2007-01-01T23:59:59.000Z

313

Accelerating black hole in 2+1 dimensions and 3+1 black (st)ring  

E-Print Network (OSTI)

A C-metric type solution for general relativity with cosmological constant is presented in 2+1 dimensions. It is interpreted as a three-dimensional black hole accelerated by a strut. Positive values of the cosmological constant are admissible too. Some embeddings of this metric in the 3+1 space-time are considered: accelerating BTZ black string and a black ring where the gravitational force is sustained by the acceleration.

Astorino, Marco

2011-01-01T23:59:59.000Z

314

T-602: BlackBerry Enterprise Server Input Validation Flaw in BlackBerry Web  

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

02: BlackBerry Enterprise Server Input Validation Flaw in 02: BlackBerry Enterprise Server Input Validation Flaw in BlackBerry Web Desktop Manager Permits Cross-Site Scripting Attacks T-602: BlackBerry Enterprise Server Input Validation Flaw in BlackBerry Web Desktop Manager Permits Cross-Site Scripting Attacks April 14, 2011 - 5:07am Addthis PROBLEM: BlackBerry Enterprise Server Input Validation Flaw in BlackBerry Web Desktop Manager Permits Cross-Site Scripting Attacks PLATFORM: BlackBerry Enterprise Server Express versions 5.0.1 and 5.0.2 for Microsoft Exchange, 5.0.2 for IBM Lotus Domino, 5.0.0 through 5.0.3 for Microsoft Exchange and IBM Lotus Domino, and version 5.0.1 for Novell GroupWise. OS Platform(s): Windows (2000), Windows (2003), Windows (2008) ABSTRACT: The BlackBerry Web Desktop Manager not properly filter HTML code from

315

Black Women and Contemporary Media: The Struggle to Self-Define Black Womanhood.  

E-Print Network (OSTI)

??This thesis sought to understand the messages Black women receive from contemporary images and how these messages may be used to help them develop a (more)

Mayo, Tilicia L.

2010-01-01T23:59:59.000Z

316

Supersymmetric 4D Rotating Black Holes from 5D Black Rings  

E-Print Network (OSTI)

We present supersymmetric solutions describing black holes with non-vanishing angular momentum in four dimensional asymptotically flat space. The solutions are obtained by Kaluza-Klein reduction of five-dimensional supersymmetric black rings wrapped on the fiber of a Taub-NUT space. We show that in the four-dimensional description the singularity of the nut can be hidden behind a regular black hole event horizon and thereby obtain an explicit example of a non-static multi-black hole solution in asymptotically flat four dimensions.

Henriette Elvang; Roberto Emparan; David Mateos; Harvey S. Reall

2005-04-13T23:59:59.000Z

317

Black Markets: Empirical studies into the economic behaviour of the black market consumer.  

E-Print Network (OSTI)

??Most attempts by governments to reduce black market activity target the supplier rather than the consumer. The current thesis, however, sees reducing the willingness of (more)

Casola, Luca

2007-01-01T23:59:59.000Z

318

Cleanup of plutonium oxide reduction black salts  

Science Conference Proceedings (OSTI)

This work describes pyrochemical processes employed to convert direc oxide reduction (DOR) black salts into discardable white salt and plutonium metal. The DOR process utilizes calcium metal as the reductant in a molten calcium chloride solvent salt to convert plutonium oxide to plutonium metal. An insoluble plutonium-rich dispersion called black salt sometimes forms between the metal phase and the salt phase. Black salts accumulated for processing were treated by one of two methods. One method utilized a scrub alloy of 70 wt % magnesium/30 wt % zinc. The other method utilized a pool of plutonium metal to agglomerate the metal phase. The two processes were similar in that calcium metal reductant and calcium chloride solvent salt were used in both cases. Four runs were performed by each method, and each method produced greater than 93% conversion of the black salt.

Giebel, R.E.; Wing, R.O.

1986-12-17T23:59:59.000Z

319

ENERGY DISTRIBUTION OF A STRINGY CHARGED BLACK  

E-Print Network (OSTI)

Abstract. The energy distribution associated with a stringy charged black hole is studied using Mllers energy-momentum complex. Our result is reasonable and it differs from that known in literature using Einsteins energymomentum complex. 1.

Ragab M. Gad

2003-01-01T23:59:59.000Z

320

Brief History of Black-Holes  

E-Print Network (OSTI)

We show that the gravitational collapse of a black-hole terminates in the birth of a white-hole, due to repulsive gravitation (antigravitation); in particular, the infinite energy density singularity does NOT occur.

Marcelo Samuel Berman

2004-12-12T23:59:59.000Z

Note: This page contains sample records for the topic "black warrior paradox" 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

Assessment of black liquor recovery boilers  

DOE Green Energy (OSTI)

In the paper making industry, pulpwood chips are digested and cooked to provide the pulp going to the refining and paper mills. Black liquor residue, containing the dissolved lignin binder from the chips, with a concentration of 12 to 16% solids, is further concentrated to 62 to 65% solids and mixed with salt cake, Sodium Sulfate (Na/sub 2/SO/sub 4/). The resulting concentrate of black liquor serves both as a fuel for generating steam in the boiler and also as the mother liquid from which other process liquors are recovered and recycled. Because the black liquor fuel contains high alkali concentrations, 18.3% sodium, 3.6% sulfur, an amount typical of midwestern bituminous coal, and measurable amounts of silica, iron oxides and other species, the black liquor boiler experience was reviewed for application to MHD boiler technology.

Not Available

1979-05-01T23:59:59.000Z

322

How to interpret black hole entropy?  

E-Print Network (OSTI)

We consider a possibility that the entropy of a Schwarzschild black hole has two different interpretations: The black hole entropy can be understood either as an outcome of a huge degeneracy in the mass eigenstates of the hole, or as a consequence of the fact that the interior region of black hole spacetime is separated from the exterior region by a horizon. In the latter case, no degeneracy in the mass eigenstates needs to be assumed. Our investigation is based on calculations performed with Lorentzian partition functions obtained for a whole maximally extended Schwarzschild spacetime, and for its right-hand-side exterior region. To check the correctness of our analysis we reproduce, in the leading order approximation, the Bekenstein--Hawking entropy of the Schwarzschild black hole.

J. Makela; P. Repo

1998-12-21T23:59:59.000Z

323

Energy of 4-Dimensional Black Hole, etc  

E-Print Network (OSTI)

In this letter I suggest possible redefinition of mass density, not depending on speed of the mass element, which leads to a more simple stress-energy for an object. I calculate energy of black hole.

Dmitriy Palatnik

2007-04-10T23:59:59.000Z

324

Charged fermions tunneling from regular black holes  

SciTech Connect

We study Hawking radiation of charged fermions as a tunneling process from charged regular black holes, i.e., the Bardeen and ABGB black holes. For this purpose, we apply the semiclassical WKB approximation to the general covariant Dirac equation for charged particles and evaluate the tunneling probabilities. We recover the Hawking temperature corresponding to these charged regular black holes. Further, we consider the back-reaction effects of the emitted spin particles from black holes and calculate their corresponding quantum corrections to the radiation spectrum. We find that this radiation spectrum is not purely thermal due to the energy and charge conservation but has some corrections. In the absence of charge, e = 0, our results are consistent with those already present in the literature.

Sharif, M., E-mail: msharif.math@pu.edu.pk; Javed, W., E-mail: wajihajaved84@yahoo.com [University of the Punjab, Department of Mathematics (Pakistan)

2012-11-15T23:59:59.000Z

325

7Falling Into a Black Hole An object that falls into a black hole will cross the  

E-Print Network (OSTI)

7Falling Into a Black Hole An object that falls into a black hole will cross the Event Horizon. Astronomers have determined the mass of this companion to be 8.7 times the sun. As a black hole, its Event determined the mass of this companion to be 8.7 times the sun. As a black hole, its Event Horizon radius

326

Jordan Algebras and Extremal Black Holes  

E-Print Network (OSTI)

We review various properties of the exceptional Euclidean Jordan algebra of degree three. Euclidean Jordan algebras of degree three and their corresponding Freudenthal triple systems were recently shown to be intimately related to extremal black holes in N=2, d=4 homogeneous supergravities. Using a novel type of eigenvalue problem with eigenmatrix solutions, we elucidate the rich matrix geometry underlying the exceptional N=2, d=4 homogeneous supergravity and explore the relations to extremal black holes.

Michael Rios

2007-03-27T23:59:59.000Z

327

Higher Spin Black Holes from CFT  

E-Print Network (OSTI)

Higher spin gravity in three dimensions has explicit black holes solutions, carrying higher spin charge. We compute the free energy of a charged black hole from the holographic dual, a 2d CFT with extended conformal symmetry, and find exact agreement with the bulk thermodynamics. In the CFT, higher spin corrections to the free energy can be calculated at high temperature from correlation functions of W-algebra currents.

Gaberdiel, Matthias R; Jin, Kewang

2012-01-01T23:59:59.000Z

328

Higher Spin Black Holes from CFT  

E-Print Network (OSTI)

Higher spin gravity in three dimensions has explicit black holes solutions, carrying higher spin charge. We compute the free energy of a charged black hole from the holographic dual, a 2d CFT with extended conformal symmetry, and find exact agreement with the bulk thermodynamics. In the CFT, higher spin corrections to the free energy can be calculated at high temperature from correlation functions of W-algebra currents.

Matthias R. Gaberdiel; Thomas Hartman; Kewang Jin

2012-02-29T23:59:59.000Z

329

Information Loss in Black Hole Evaporation  

E-Print Network (OSTI)

Parikh-Wilczek tunnelling framework is investigated again. We argue that Parikh-Wilczek's treatment, which satisfies the first law of black hole thermodynamics and consists with an underlying unitary theory, is only suitable for a reversible process. Because of the negative heat capacity, an evaporating black hole is a highly unstable system. That is, the factual emission process is irreversible, the unitary theory will not be satisfied and the information loss is possible.

Jingyi Zhang; Yapeng Hu; Zheng Zhao

2005-12-11T23:59:59.000Z

330

Asymptotically Lifshitz brane-world black holes  

SciTech Connect

We study the gravity dual of a Lifshitz field theory in the context of a RSII brane-world scenario, taking into account the effects of the extra dimension through the contribution of the electric part of the Weyl tensor. We study the thermodynamical behavior of such asymptotically Lifshitz black holes. It is shown that the entropy imposes the critical exponent z to be bounded from above. This maximum value of z corresponds to a positive infinite entropy as long as the temperature is kept positive. The stability and phase transition for different spatial topologies are also discussed. - Highlights: Black-Right-Pointing-Pointer Studying the gravity dual of a Lifshitz field theory in the context of brane-world scenario. Black-Right-Pointing-Pointer Studying the thermodynamical behavior of asymptotically Lifshitz black holes. Black-Right-Pointing-Pointer Showing that the entropy imposes the critical exponent z to be bounded from above. Black-Right-Pointing-Pointer Discussing the phase transition for different spatial topologies.

Ranjbar, Arash, E-mail: a_ranjbar@sbu.ac.ir; Sepangi, Hamid Reza, E-mail: hr-sepangi@sbu.ac.ir; Shahidi, Shahab, E-mail: s_shahidi@sbu.ac.ir

2012-12-15T23:59:59.000Z

331

Modeling Flows Around Merging Black Hole Binaries  

E-Print Network (OSTI)

Coalescing massive black hole binaries are produced by the mergers of galaxies. The final stages of the black hole coalescence produce strong gravitational radiation that can be detected by the space-borne LISA. In cases where the black hole merger takes place in the presence of gas and magnetic fields, various types of electromagnetic signals may also be produced. Modeling such electromagnetic counterparts of the final merger requires evolving the behavior of both gas and fields in the strong-field regions around the black holes. We have taken a step towards solving this problem by mapping the flow of pressureless matter in the dynamic, 3-D general relativistic spacetime around the merging black holes. We find qualitative differences in collision and outflow speeds, including a signature of the merger when the net angular momentum of the matter is low, between the results from single and binary black holes, and between nonrotating and rotating holes in binaries. If future magnetohydrodynamic results confirm these differences, it may allow assessment of the properties of the binaries as well as yielding an identifiable electromagnetic counterpart to the attendant gravitational wave signal.

James R. van Meter; John H. Wise; M. Coleman Miller; Christopher S. Reynolds; Joan M. Centrella; John G. Baker; William D. Boggs; Bernard J. Kelly; Sean T. McWilliams

2009-07-31T23:59:59.000Z

332

Superconducting Cosmic Strings that Connected a Charged Black Hole and Considered as Hair of Black Hole  

E-Print Network (OSTI)

This paper describes that the superconducting cosmic strings can be connected to an electrically charged black hole, and can be considerd as the hair of black hole. What the no-hair theorems show is that a large amount of information is lost when a body collapses to form a black hole. In addition, the no-hair theorem has not been proved for the Yang-Mills field. This paper proves and claims that the superconducting cosmic strings can be connected to an electrically charged hole when the current inside these strings and black holes approaches the critical value. Because, this state is the final state of the gravitational collapse, and the event horizon would be destroyed in this state. Therefore, these strings should be considered as hair of the charged black holes, and may be titled as BHCS (Black Hole Connected Strings). This means that at least the charged black holes have the hair. Thus, the no-hair theorem is not applicable for the charged black holes in the state of the critical current.

Ali Riza Akcay

1999-09-23T23:59:59.000Z

333

CX-000740: Categorical Exclusion Determination | Department of...  

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

Characterization for Carbon Dioxide Storage from Coal-fired Power Facilities in the Black Warrior Basin of Alabama CX(s) Applied: A9, B3.1 Date: 01222010 Location(s):...

334

CX-004491: Categorical Exclusion Determination | Department of...  

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

Characterization for Carbon Dioxide Storage from Coal-fired Power Facilities in the Black Warrior Basin of Alabama CX(s) Applied: A9, B3.1 Date: 11192010 Location(s): Alabama...

335

CX-004270: Categorical Exclusion Determination | Department of...  

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

Characterization for Carbon Dioxide Storage from Coal-Fired Power Facilities in the Black Warrior Basin of Alabama CX(s) Applied: A9, B3.1 Date: 10202010 Location(s): Alabama...

336

Page not found | Department of Energy  

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

Characterization for Carbon Dioxide Storage from Coal-fired Power Facilities in the Black Warrior Basin of Alabama CX(s) Applied: A9, B3.1 Date: 01222010 Location(s): Walker...

337

Alabama | Department of Energy  

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

Characterization for Carbon Dioxide Storage from Coal-fired Power Facilities in the Black Warrior Basin of Alabama (Drill) CX(s) Applied: A9, B3.1, B3.6 Date: 02102010...

338

Alabama | Department of Energy  

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

Characterization for Carbon Dioxide Storage from Coal-fired Power Facilities in the Black Warrior Basin of Alabama CX(s) Applied: A9, B3.1 Date: 11192010 Location(s): Alabama...

339

CX-000775: Categorical Exclusion Determination | Department of...  

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

Characterization for Carbon Dioxide Storage from Coal-fired Power Facilities in the Black Warrior Basin of Alabama (Drill) CX(s) Applied: A9, B3.1, B3.6 Date: 02102010...

340

CX-000741: Categorical Exclusion Determination | Department of...  

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

Characterization for Carbon Dioxide Storage from Coal-fired Power Facilities in the Black Warrior Basin of Alabama CX(s) Applied: A9, B3.1 Date: 01222010 Location(s):...

Note: This page contains sample records for the topic "black warrior paradox" 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

CX-000743: Categorical Exclusion Determination | Department of...  

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

Characterization for Carbon Dioxide Storage from Coal-fired Power Facilities in the Black Warrior Basin of Alabama CX(s) Applied: A9, B3.1 Date: 01222010 Location(s):...

342

CX-000742: Categorical Exclusion Determination | Department of...  

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

Characterization for Carbon Dioxide Storage from Coal-fired Power Facilities in the Black Warrior Basin of Alabama CX(s) Applied: A9, B3.1 Date: 01222010 Location(s): Walker...

343

Rotating black hole thermodynamics with a particle probe  

Science Conference Proceedings (OSTI)

The thermodynamics of Myers-Perry black holes in general dimensions are studied using a particle probe. When undergoing particle absorption, the changes of the entropy and irreducible mass are shown to be dependent on the particle radial momentum. The black hole thermodynamic behaviors are dependent on dimensionality for specific rotations. For a 4-dimensional Kerr black hole, its black hole properties are maintained for any particle absorption. 5-dimensional black holes can avoid a naked ring singularity by absorbing a particle in specific momenta ranges. Black holes over 6 dimensions become ultraspinning black holes through a specific form of particle absorption. The microscopical changes are interpreted in limited cases of Myers-Perry black holes using Kerr/CFT correspondence. We systematically describe the black hole properties changed by particle absorption in all dimensions.

Gwak, Bogeun; Lee, Bum-Hoon [Department of Physics and Center of Quantum Spacetime, Sogang University, Seoul 121-742 (Korea, Republic of)

2011-10-15T23:59:59.000Z

344

Black Holes or Frozen Stars? A Viable Theory of Gravity without Black Holes  

E-Print Network (OSTI)

Do observations of black hole candidates rule out alternative theories of gravity without horizon formation? This depends on the existence, viability and reasonableness of alternative theories of gravity without black holes. Here a theory of gravity without black hole horizon formation is presented. The gravitational collapse stops shortly before horizon formation and leaves a stable frozen star. In the limit $\\Xi, \\Upsilon\\to 0$ the Einstein equations of GR are recovered, and the frozen stars become observationally indistinguishable from GR black holes. The theory therefore provides a counterexample to recent claims that observational evidence from black hole candidates "all but requires the existence of a horizon". The theory presented here shares its equations with RTG. Nonetheless, as is shown, there remain important conceptual and physical differences. In particular, some serious problems of RTG are not present in the theory proposed here. So it can be argued that the theory is a physically viable and conceptually sound alternative to GR.

I. Schmelzer

2010-03-07T23:59:59.000Z

345

Unsung, Unwavering: Nineteenth-Century Black Women's Epistemologies and the Liberal Problematic  

E-Print Network (OSTI)

Print. Beaulieu, Elizabeth Ann. Black Women Writers and theand Arlene Keizer, eds. New Black Feminist Criticism, 1985-Print. Braxton, Joanne M. Black Women Writing Autobiography:

Mann, Regis Marlene

2013-01-01T23:59:59.000Z

346

Inferring ecological relationships from occupancy patterns for California Black Rails in the Sierra Nevada foothills  

E-Print Network (OSTI)

population of the Black Rail in Yuba County, California.M. L. Legare. 1994. Black Rail (Laterallus jamaicensis). in1992. A recent Black Rail record for Baja California.

Richmond, Orien Manu Wright

2010-01-01T23:59:59.000Z

347

INCREASED OIL PRODUCTION AND RESERVES UTILIZING SECONDARY/TERTIARY RECOVERY TECHNIQUES ON SMALL RESERVOIRS IN THE PARADOX BASIN, UTAH  

Science Conference Proceedings (OSTI)

The Paradox Basin of Utah, Colorado, and Arizona contains nearly 100 small oil fields producing from shallow-shelf carbonate buildups or mounds within the Desert Creek zone of the Pennsylvanian (Desmoinesian) Paradox Formation. These fields typically have one to four wells with primary production ranging from 700,000 to 2,000,000 barrels (111,300-318,000 m{sup 3}) of oil per field at a 15 to 20 percent recovery rate. Five fields in southeastern Utah were evaluated for waterflood or carbon-dioxide (CO{sub 2})-miscible flood projects based upon geological characterization and reservoir modeling. Geological characterization on a local scale focused on reservoir heterogeneity, quality, and lateral continuity as well as possible compartmentalization within each of the five project fields. The Desert Creek zone includes three generalized facies belts: (1) open-marine, (2) shallow-shelf and shelf-margin, and (3) intra-shelf, salinity-restricted facies. These deposits have modern analogs near the coasts of the Bahamas, Florida, and Australia, respectively, and outcrop analogs along the San Juan River of southeastern Utah. The analogs display reservoir heterogeneity, flow barriers and baffles, and lithofacies geometry observed in the fields; thus, these properties were incorporated in the reservoir simulation models. Productive carbonate buildups consist of three types: (1) phylloid algal, (2) coralline algal, and (3) bryozoan. Phylloid-algal buildups have a mound-core interval and a supra-mound interval. Hydrocarbons are stratigraphically trapped in porous and permeable lithotypes within the mound-core intervals of the lower part of the buildups and the more heterogeneous supramound intervals. To adequately represent the observed spatial heterogeneities in reservoir properties, the phylloid-algal bafflestones of the mound-core interval and the dolomites of the overlying supra-mound interval were subdivided into ten architecturally distinct lithotypes, each of which exhibits a characteristic set of reservoir properties obtained from outcrop analogs, cores, and geophysical logs. The Anasazi and Runway fields were selected for geostatistical modeling and reservoir compositional simulations. Models and simulations incorporated variations in carbonate lithotypes, porosity, and permeability to accurately predict reservoir responses. History matches tied previous production and reservoir pressure histories so that future reservoir performances could be confidently predicted. The simulation studies showed that despite most of the production being from the mound-core intervals, there were no corresponding decreases in the oil in place in these intervals. This behavior indicates gravity drainage of oil from the supra-mound intervals into the lower mound-core intervals from which the producing wells' major share of production arises. The key to increasing ultimate recovery from these fields (and similar fields in the basin) is to design either waterflood or CO{sub 2}-miscible flood projects capable of forcing oil from high-storage-capacity but low-recovery supra-mound units into the high-recovery mound-core units. Simulation of Anasazi field shows that a CO{sub 2} flood is technically superior to a waterflood and economically feasible. For Anasazi field, an optimized CO{sub 2} flood is predicted to recover a total 4.21 million barrels (0.67 million m3) of oil representing in excess of 89 percent of the original oil in place. For Runway field, the best CO{sub 2} flood is predicted to recover a total of 2.4 million barrels (0.38 million m3) of oil representing 71 percent of the original oil in place. If the CO{sub 2} flood performed as predicted, it is a financially robust process for increasing the reserves in the many small fields in the Paradox Basin. The results can be applied to other fields in the Rocky Mountain region, the Michigan and Illinois Basins, and the Midcontinent.

Thomas C. Chidsey, Jr.

2002-11-01T23:59:59.000Z

348

The Environmental Impact of Supermassive Black Holes  

E-Print Network (OSTI)

The supermassive black holes observed at the centers of almost all present-day galaxies, had a profound impact on their environment. I highlight the principle of self-regulation, by which supermassive black holes grow until they release sufficient energy to unbind the gas that feeds them from their host galaxy. This principle explains several observed facts, including the correlation between the mass of a central black hole and the depth of the gravitational potential well of its host galaxy, and the abundance and clustering properties of bright quasars in the redshift interval of z~2-6. At lower redshifts, quasars might have limited the maximum mass of galaxies through the suppression of cooling flows in X-ray clusters. The seeds of supermassive black holes were likely planted in dwarf galaxies at redshifts z>10, through the collapse of massive or supermassive stars. The minimum seed mass can be identified observationally through the detection of gravitational waves from black hole binaries by Advanced LIGO or LISA. Aside from shaping their host galaxies, quasar outflows filled the intergalactic medium with magnetic fields and heavy elements. Beyond the reach of these outflows, the brightest quasars at z>6 have ionized exceedingly large volumes of gas (tens of comoving Mpc) prior to global reionization, and must have suppressed the faint end of the galaxy luminosity function in these volumes before the same occurred through the rest of the universe.

Abraham Loeb

2004-08-10T23:59:59.000Z

349

Investigating Dark Energy with Black Hole Binaries  

E-Print Network (OSTI)

The accelerated expansion of the universe is ascribed to the existence of dark energy. Black holes accretion of dark energy induces a mass change proportional to the energy density and pressure of the background dark energy fluid. The time scale during which the mass of black holes changes considerably is too long relative to the age of the universe, thus beyond detection possibilities. We propose to take advantage of the modified black hole masses for exploring the equation of state $w[z]$ of dark energy, by investigating the evolution of supermassive black hole binaries on a dark energy background. Deriving the signatures of dark energy accretion on the evolution of binaries, we find that dark energy imprints on the emitted gravitational radiation and on the changes in the orbital radius of the binary can be within detection limits for certain supermassive black hole binaries. In this talk I describe how binaries can provide a useful tool in obtaining complementary information on the nature of dark energy, based on the work done with A.Kelleher.

Laura Mersini-Houghton; Adam Kelleher

2009-06-08T23:59:59.000Z

350

Simulations of Jets Driven by Black Hole Rotation  

E-Print Network (OSTI)

The origin of jets emitted from black holes is not well understood, however there are two possible energy sources, the accretion disk or the rotating black hole. Magnetohydrodynamic simulations show a well-defined jet that extracts energy from a black hole. If plasma near the black hole is threaded by large-scale magnetic flux, it will rotate with respect to asymptotic infinity creating large magnetic stresses. These stresses are released as a relativistic jet at the expense of black hole rotational energy. The physics of the jet initiation in the simulations is described by the theory of black hole gravitohydromagnetics.

Vladimir Semenov; Sergey Dyadechkin; Brian Punsly

2004-08-20T23:59:59.000Z

351

Cemex Black Mountain Quarry | Open Energy Information  

Open Energy Info (EERE)

Mountain Quarry Mountain Quarry Jump to: navigation, search Name Cemex Black Mountain Quarry Facility Cemex Black Mountain Quarry Sector Wind energy Facility Type Community Wind Facility Status In Service Owner Foundation Windpower Developer Foundation Windpower Energy Purchaser Cemex Black Mountain Quarry Location Apple Valley CA Coordinates 34.622028°, -117.111833° 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":34.622028,"lon":-117.111833,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

352

Statistical entropy of the Schwarzschild black hole  

E-Print Network (OSTI)

We derive the statistical entropy of the Schwarzschild black hole by considering the asymptotic symmetry algebra near the $\\cal{I^{-}}$ boundary of the spacetime at past null infinity. Using a two-dimensional description and the Weyl invariance of black hole thermodynamics this symmetry algebra can be mapped into the Virasoro algebra generating asymptotic symmetries of anti-de Sitter spacetime. Using lagrangian methods we identify the stress-energy tensor of the boundary conformal field theory and we calculate the central charge of the Virasoro algebra. The Bekenstein-Hawking result for the black hole entropy is regained using Cardy's formula. Our result strongly supports a non-local realization of the holographic principle

Mariano Cadoni

2005-11-09T23:59:59.000Z

353

Black Holes in Three Dimensional Topological Gravity  

E-Print Network (OSTI)

We investigate the black hole solution to (2+1)-dimensional gravity coupled to topological matter, with a vanishing cosmological constant. We calculate the total energy, angular momentum and entropy of the black hole in this model and compare with results obtained in Einstein gravity. We find that the theory with topological matter reverses the identification of energy and angular momentum with the parameters in the metric, compared with general relativity, and that the entropy is determined by the circumference of the inner rather than the outer horizon. We speculate that this results from the contribution of the topological matter fields to the conserved currents. We also briefly discuss two new possible (2+1)-dimensional black holes.

S. Carlip; J. Gegenberg; R. B. Mann

1994-10-17T23:59:59.000Z

354

Thermodynamic Curvature of the BTZ Black Hole  

E-Print Network (OSTI)

Some thermodynamic properties of the Baados-Teitelboim-Zanelli (BTZ) black hole are studied to get the effective dimension of its corresponding statistical model. For this purpose, we make use of the geometrical approach to the thermodynamics: Considering the black hole as a thermodynamic system with two thermodynamic variables (the mass M and the angular momemtum J), we obtain two-dimensional Riemannian thermodynamic geometry described by positive definite Ruppeiner metric. From the thermodynamic curvature we find that the extremal limit is the critical point. The effective spatial dimension of the statistical system corresponding to the near-extremal BTZ black holes is one. Far from the extremal point, the effective dimension becomes less than one, which leads to one possible speculation on the underlying structure for the corresponding statistical model. Typeset using REVTEX

Rong-gen Cai; Jin-ho Cho

1998-01-01T23:59:59.000Z

355

Comments on Information Erasure in Black Hole  

E-Print Network (OSTI)

This paper analyzes a certain model of information erasure by black hole and finds its major contradictions with the known laws of elementary physics. It has been demonstrated that the model in question leads to arbitrarily fast processes of information erasure. The proposed physical interpretation of information freezing at the event horizon as observed by an asymptotic observer is also showed to be fallacious. It has been clearly showed that quantum mechanics doesn't allow any information erasure, whatever the process may be, near the black hole horizon as long as the erasure process conforms to Landauer's principle. The later part of the work demonstrates the actual significance of the so called erasure entropy discussed in connection to quantum information erasure by black hole systems. It has been showed that erasure entropy is actually the mutual information between two subsystems and only arises when correlations between the respective subsystems are ignored.

Moinul Hossain Rahat; Avik Roy; Mishkat Al Alvi; Md. Abdul Matin

2013-11-03T23:59:59.000Z

356

The moduli space of striped black branes  

E-Print Network (OSTI)

At finite charge density certain holographic models exhibit the spontaneous breaking of translational invariance resulting in an inhomogeneous phase. We follow up on recent numerical work, reporting results for a larger class of cohomogeneity two black branes in AdS, dual to a holographic striped phase. We construct the continuous moduli space of inhomogeneous black branes as a function of the temperature. Minimising the free energy we determine the dominant striped solutions, revealing a growth in the stripe size as the system is cooled. We discuss the thermodynamic properties of this line of solutions.

Benjamin Withers

2013-04-07T23:59:59.000Z

357

The moduli space of striped black branes  

E-Print Network (OSTI)

At finite charge density certain holographic models exhibit the spontaneous breaking of translational invariance resulting in an inhomogeneous phase. We follow up on recent numerical work, reporting results for a larger class of cohomogeneity two black branes in AdS, dual to a holographic striped phase. We construct the continuous moduli space of inhomogeneous black branes as a function of the temperature. Minimising the free energy we determine the dominant striped solutions, revealing a growth in the stripe size as the system is cooled. We discuss the thermodynamic properties of this line of solutions.

Withers, Benjamin

2013-01-01T23:59:59.000Z

358

Thermal Gravitational Waves from Primordial Black Holes  

E-Print Network (OSTI)

Thermal gravitational waves can be generated in various sources such as, in the cores of stars, white dwarfs and neutron stars due to the fermion collisions in the dense degenerate Fermi gas. Such high frequency thermal gravitational waves can also be produced during the collisions in a gamma ray burst or during the final stages of the evaporation of primordial black holes. Here we estimate the thermal gravitational waves from primordial black holes and estimate the integrated energy of the gravitational wave emission over the entire volume of the universe and over Hubble time. We also estimate the gravitational wave flux from gamma ray bursts and jets.

C. Sivaram; Kenath Arun

2010-05-19T23:59:59.000Z

359

Black Hole Superradiance From Kerr/CFT  

E-Print Network (OSTI)

The superradiant scattering of a scalar field with frequency and angular momentum (\\omega,m) by a near-extreme Kerr black hole with mass and spin (M,J) was derived in the seventies by Starobinsky, Churilov, Press and Teukolsky. In this paper we show that for frequencies scaled to the superradiant bound the full functional dependence on (\\omega,m,M,J) of the scattering amplitudes is precisely reproduced by a dual two-dimensional conformal field theory in which the black hole corresponds to a specific thermal state and the scalar field to a specific operator. This striking agreement corroborates a conjectured Kerr/CFT correspondence.

Bredberg, Irene; Song, Wei; Strominger, Andrew

2009-01-01T23:59:59.000Z

360

Black Hole Superradiance From Kerr/CFT  

E-Print Network (OSTI)

The superradiant scattering of a scalar field with frequency and angular momentum (\\omega,m) by a near-extreme Kerr black hole with mass and spin (M,J) was derived in the seventies by Starobinsky, Churilov, Press and Teukolsky. In this paper we show that for frequencies scaled to the superradiant bound the full functional dependence on (\\omega,m,M,J) of the scattering amplitudes is precisely reproduced by a dual two-dimensional conformal field theory in which the black hole corresponds to a specific thermal state and the scalar field to a specific operator. This striking agreement corroborates a conjectured Kerr/CFT correspondence.

Irene Bredberg; Thomas Hartman; Wei Song; Andrew Strominger

2009-07-21T23:59:59.000Z

Note: This page contains sample records for the topic "black warrior paradox" 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

Normal Modes of Black Hole Accretion Disks  

SciTech Connect

This paper studies the hydrodynamical problem of normal modes of small adiabatic oscillations of relativistic barotropic thin accretion disks around black holes (and compact weakly magnetic neutron stars). Employing WKB techniques, we obtain the eigen frequencies and eigenfunctions of the modes for different values of the mass and angular momentum of the central black hole. We discuss the properties of the various types of modes and examine the role of viscosity, as it appears to render some of the modes unstable to rapid growth.

Ortega-Rodriguez, Manuel; /Stanford U., Appl. Phys. Dept. /Costa Rica U.; Silbergleit, Alexander S.; /Stanford U., HEPL; Wagoner, Robert V.; /Stanford U., Phys. Dept.

2006-11-07T23:59:59.000Z

362

Discrete Information from CHL Black Holes  

E-Print Network (OSTI)

AdS_2/CFT_1 correspondence predicts that the logarithm of a Z_N twisted index over states carrying a fixed set of charges grows as 1/N times the entropy of the black hole carrying the same set of charges. In this paper we verify this explicitly by calculating the microscopic Z_N twisted index for a class of states in the CHL models. This demonstrates that black holes carry more information about the microstates than just the total degeneracy.

Ashoke Sen

2010-02-22T23:59:59.000Z

363

New quantum gravity effect, dark energy, accelerating universe, black hole and experimental scheme using superfluid Helium and atom interferometer  

E-Print Network (OSTI)

Considerable attention has been focused on Verlinde's recent work, claiming that Newton's gravity is not a fundamental force. In a recent work (arXiv:1012.5858), we give further the logic basis and basic clues to derive the Newton's gravity, inertia law and Einstein's weak equivalence principle. In this work, we show that if the gravity is not a fundamental force, in special case, it could be repulsive when quantum wavepacket effect is considered. This quantum gravity effect leads to several physical effects: (1) It is consistent with the universe with accelerating expansion, if the gravity and quantum effect of the fluctuating 'vacuum' (dark energy) is considered. The role of the cosmological constant is naturally interpreted when the gravity and quantum effect of the whole 'vacuum' background is considered. (2) It leads to new idea about black hole information paradox, no-hair theorem and Hawking radiation. (3) With a sphere full of superfluid Helium, we propose a feasible experimental scheme to test our idea with an atom interferometer placed in the sphere. Our calculations show that the accuracy Delta g/g below 10^(-8) could be used to test our idea, which satisfies the present experimental technique of atom interferometer.

Hongwei Xiong

2011-01-03T23:59:59.000Z

364

Residential segregation and health behavior among Black adults  

E-Print Network (OSTI)

of supermarkets in metropolitan Detroit. Am J Public Health,determinants of health in Detroit. The Millbank Quarterly,86.7% of the Blacks in Detroit, 83.6% of the Blacks in

Corral, Irma

2009-01-01T23:59:59.000Z

365

Green is the new black | Y-12 National Security Complex  

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

Green is the new black Green is the new black Posted: September 9, 2013 - 2:47pm Environmental stakeholders from across the state meet at the New Hope Center for the Tennessee...

366

STATEMENT OF CONSIDERATIONS REQUEST BY THE BLACK CLAWSON COMPANY  

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

BLACK CLAWSON COMPANY FOR AN ADVANCE WAIVER OF DOMESTIC AND FOREIGN PATENT RIGHTS UNDER DOE COOPERATIVE AGREEMENT NO. DE-FC36-95GO 10085 W(A)-95-047; CH-0884 The Petitioner, Black...

367

Markovs maximon and quantum black holes  

Science Conference Proceedings (OSTI)

It is shown that the modern theory predicts the existence of a minimum mass of quantum black holes. Such minimal black holes are a natural candidate for the maximon

V. A. Berezin

1998-01-01T23:59:59.000Z

368

ME EET Seminar: Black Carbon in Fire and Ice  

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

of black carbon in the environment. Black carbon is a main component of soot from the combustion of fossil and biomass fuels, which absorbs sunlight and contributes to the...

369

On Hawking radiation of 2d Liouville black hole  

E-Print Network (OSTI)

We adapt the method of complex paths to the study of the radiation of Hawking of Liouville black holes.

Chabab, M; Sedra, M B

2011-01-01T23:59:59.000Z

370

Black Holes in Born-Infeld Extended New Massive Gravity  

E-Print Network (OSTI)

In this paper we find different types of black holes for the Born-Infeld extended new massive gravity. Our solutions include (un)charged (A)dS warped black holes for four and six derivative expanded action. We also look at the black holes in unexpanded action. In each case we calculate the entropy, angular momentum and the mass of the black holes.

Ghodsi, Ahmad

2010-01-01T23:59:59.000Z

371

The Black Holes do not exist - "Also Sprach Karl Schwarzschild"  

E-Print Network (OSTI)

According to the original theoretical analysis of 1916 by Karl Schwarzschild the black holes do not have a physical reality.

A. Loinger

2004-02-18T23:59:59.000Z

372

Information transfer from black holes via white holes  

E-Print Network (OSTI)

It is shown that a black hole can be in two states: one with positive and other with negative surface gravity $k$. The state with $kinformation loss. In the quantization of black hole area the surface of a black hole is divided into a system of independent patches, each of which can be in two states: one with $k>0$ and other with $kinformation can be recovered from the black hole.

K. Ropotenko

2013-09-05T23:59:59.000Z

373

Microstructure and Optical Properties of Black Chrome Before and After Exposure to High Temperatures  

E-Print Network (OSTI)

reflectance, the solar spectrum and black body spectrum (100relationship to the solar spectrum and black body spectra is

Lapert, C.M.

2011-01-01T23:59:59.000Z

374

MICROSTRUCTURE AND OPTICAL PROPERTIES OF BLACK CHROME BEFORE AND AFTER EXPOSURE TO HIGH TEMPERATURES  

E-Print Network (OSTI)

relationship to the solar spectrum and black body spectra isreflectance, the solar spectrum and black body spectrum (100

Lampert, C.M.

2011-01-01T23:59:59.000Z

375

Isotope Biogeochemistry of Diagenesis caused by a Black  

E-Print Network (OSTI)

Isotope Biogeochemistry of Diagenesis caused by a Black Shale-fueled Deep Marine Biosphere (ODP Leg Forschungsgemeinschaft and Max Planck Society #12;Black shales and Diagenesis: Processes and Proxies - Authigenic sulfur the coasts of Surinam and French Guyana #12;µ Black shales in Leg 207 sediments and pore water response depth

376

FORMALISMS FOR MORPHOGRAPHEMIC DESCRIPTION Alan Black. Graeme Ritchie.  

E-Print Network (OSTI)

FORMALISMS FOR MORPHOGRAPHEMIC DESCRIPTION Alan Black. Graeme Ritchie. Dept of Arr~.~al I.; Pulman, Steve G.; Black, Alan W.; and Ru~ell Graham J. 1987 A Compu- tation&! Framework For Lex ~ ~ . Russell Graham J.; Pulman, Steve G.; Ritchle, Gzaeme D.; and Black, Alan W. 1986 A Dic- tionary

377

ETHOGRAM FOR THE GLOSSY BLACK-COCKATOO INTRODUCTION  

E-Print Network (OSTI)

44 CHAPTER 3 ETHOGRAM FOR THE GLOSSY BLACK-COCKATOO INTRODUCTION The purpose of this chapter is to record the available descriptive information on the glossy black-cockatoo's species-typical behavior. The glossy black-cockatoos did not land on the ground except to drink, and in one case to tend a fledgling

Pepper, John

378

The Supermassive Black Hole at the Galactic Center  

E-Print Network (OSTI)

1 The Supermassive Black Hole at the Galactic Center Fulvio Melia 1 Physics Department and Steward, Auf dem Hugel 69, Bonn D-53121, Germany KEYWORDS: accretion, black hole physics, gas dynamics, jets the physics of black hole accretion, magnetized gas dynamics and unusual star formation. The Galactic Center

Falcke, Heino

379

Numerical relativity and the formation of black holes  

E-Print Network (OSTI)

Numerical relativity and the formation of black holes J´er^ome Novak (Jerome in fiziko, Univerza v Ljubljani, March, 6th 2012 #12;Plan 1 Introduction 2 Core-collapse supernova 3 Black #12;Outline 1 Introduction 2 Core-collapse supernova 3 Black hole formation 4 General relativity 5

?umer, Slobodan

380

DISCRETE SYMMETRIES OF THE BLACK-SCHOLES EQUATION  

E-Print Network (OSTI)

DISCRETE SYMMETRIES OF THE BLACK-SCHOLES EQUATION Gheorghe Silberberg Abstract The paper computes the full automorphism group of the Lie al- gebra associated to the Black-Scholes equation and determines symmetries. The present paper applies the whole procedure to the famous Black- Scholes partial differential

Note: This page contains sample records for the topic "black warrior paradox" 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

The Woman In Black AS Grade Distribution Tool  

E-Print Network (OSTI)

The Woman In Black AS Grade Distribution Tool Smithsonian's National Museum Of African History! For any questions, please contact: mznekleung@gmail.com #12;Black History Month By: Stephan Leung, CAN Douglass. During this Black History Month, we remember and reflect on the important people and events which

Blanco, Philip R.

382

On a problem in the Stability Discussion of Rotating black  

E-Print Network (OSTI)

On a problem in the Stability Discussion of Rotating black holes Irina Craciun Research Student metric · Kerr metric #12;Kerr black holes · A more complex solution to EFE, discovered by Roy Kerr in 1963, the Kerr metric describes the geometry of spacetime around a rotating massive body · Kerr black

Allen, Gabrielle

383

I. Review of the information problem and black hole complementarity  

E-Print Network (OSTI)

#12;I. Review of the information problem and black hole complementarity II. The firewall argument-th/9306083): Red: Scoarse (= SBekenstein-Hawking) of evaporating black hole. Blue: (SvN of radiation the black hole is still large (green). Asides: RS = M in Planck units, remnants, A vs. A3/4 S O(RS 3

384

MAXIMAL ANALYTIC EXTENSIONS OF THE EMPARAN-REALL BLACK RING  

E-Print Network (OSTI)

MAXIMAL ANALYTIC EXTENSIONS OF THE EMPARAN-REALL BLACK RING Piotr T. Chru´sciel & Julien Cortier Abstract We construct a Kruskal-Szekeres-type analytic extension of the Emparan- Reall black ring-Reall [13] metrics form a remarkable class of vacuum black hole solutions of Einstein equations in dimension

Paris-Sud XI, Université de

385

A Link Between Black Holes and the Golden Ratio  

E-Print Network (OSTI)

We consider a variational formalism to describe black holes solution in higher dimensions. Our procedure clarifies the arbitrariness of the radius parameter and, in particular, the meaning of the event horizon of a black hole. Moreover, our formalism enables us to find a surprising link between black holes and the golden ratio.

J. A. Nieto

2011-06-02T23:59:59.000Z

386

Influence of Black Masculinity Game Exemplars on Social Judgments  

Science Conference Proceedings (OSTI)

In this investigation, the authors ask how media exemplars of Black masculinity influence the views of and intentions toward other Black men. An experiment compared the effects of exposure to Black video game characters fitting the exemplar thug or street ... Keywords: attitudes, characterization of race, exemplars, media, political imagery, positive influence of imagery, priming, race, racial exemplars, stereotypes, video games, visions of race

Karen E. Dill, Melinda C.R. Burgess

2013-08-01T23:59:59.000Z

387

Location and Geology Fig 1. The Macasty black shale  

E-Print Network (OSTI)

, Quebec, is organic-rich black shale and hosting oil and gas. It is equivalent to the Ithaca shaleLocation and Geology Fig 1. The Macasty black shale in the Anticosti Island in the Gulf of St. d13C for calcite disseminated in the black shale range from 2.6o to 2.8 / The values are lower

388

Horizon Properties of Einstein-Yang-Mills Black Hole  

E-Print Network (OSTI)

We consider static axially symmetric Einstein-Yang-Mills black holes in the isolated horizon formalism. The mass of these hairy black holes is related to the mass of the corresponding particle-like solutions by the horizon mass. The hairy black holes violate the ``quasi-local uniqueness conjecture'', based on the horizon charges.

B. Kleihaus; J. Kunz; A. Sood; M. Wirschins

2001-10-19T23:59:59.000Z

389

Google Apps Connector for BlackBerry Enterprise Server Users  

E-Print Network (OSTI)

Google Apps Connector for BlackBerry Enterprise Server Users Google Apps Connector for BlackBerry Enterprise Server is a Google offering that lets you access your Google Apps Mail, Calendar, and Contacts through your native BlackBerry applications. Key Features of Using the Google Apps Connector Updates Mail

Hu, Jie

390

Black hole/string ball production, possibly at LHC  

E-Print Network (OSTI)

I show a brief historical overview of recent developments on the black hole physics that can be possibly explored at LHC. I comment on the correspondence principle of black holes and strings and show its realization in a differential production cross section of a black hole/string ball with fixed angular momentum.

Oda, Kin-ya

2010-01-01T23:59:59.000Z

391

Detroit to Durban: Black Workers' Common Struggle; Southern Africa/Black America: Same Struggles, Same Fight  

E-Print Network (OSTI)

DETROIT TO DURBAN: BlACK \\\\OOKERS CCM1>N STRUGGLE by Blackearliest parrphlet is Detroit to Durban . Although publishedstrikes of early 1973 and the Detroit riots of 1967 is a bit

Philips, John

1978-01-01T23:59:59.000Z

392

:Black Board GHC GHC BinPro-  

E-Print Network (OSTI)

.2.3 BinProlog-Tcl/Tk : : : : : : : : : : : : : : : : : : : : : : : 4 3 Black Board GHC 7 3.2 : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : 17 5 19 20 21 ii #12;A 22 A.1 GHC : : : : : : : : : : : : : : : : : : : : : : : : : : 22 A.2 Tcl Prolog BinProlog C C Prolog (Continuation) Tcl/Tk [7] 2.2.1 BinProlog Prolog Source clause: a

Tanaka, Jiro

393

Repackaging SRS Black Box TRU Waste  

Science Conference Proceedings (OSTI)

Historically, large items of TRU Waste, which were too large to be packaged in drums for disposal have been packaged in various sizes of custom made plywood boxes at the Savannah River Site (SRS), for many years. These boxes were subsequently packaged into large steel ''Black Boxes'' for storage at SRS, pending availability of Characterization and Certification capability, to facilitate disposal of larger items of TRU Waste. There are approximately 107 Black Boxes in inventory at SRS, each measuring some 18' x 12' x 7', and weighing up to 45,000 lbs. These Black Boxes have been stored since the early 1980s. The project to repackage this waste into Standard Large Boxes (SLBs), Standard Waste Boxes (SWB) and Ten Drum Overpacks (TDOP), for subsequent characterization and WIPP disposal, commenced in FY04. To date, 10 Black Boxes have been repackaged, resulting in 40 SLB-2's, and 37 B25 overpack boxes, these B25's will be overpacked in SLB-2's prior to shipping to WIPP. This paper will describe experience to date from this project.

Swale, D. J.; Stone, K.A.; Milner, T. N.

2006-01-09T23:59:59.000Z

394

CFT Duals for Extreme Black Holes  

E-Print Network (OSTI)

It is argued that the general four-dimensional extremal Kerr-Newman-AdS-dS black hole is holographically dual to a (chiral half of a) two-dimensional CFT, generalizing an argument given recently for the special case of extremal Kerr. Specifically, the asymptotic symmetries of the near-horizon region of the general extremal black hole are shown to be generated by a Virasoro algebra. Semiclassical formulae are derived for the central charge and temperature of the dual CFT as functions of the cosmological constant, Newton's constant and the black hole charges and spin. We then show, assuming the Cardy formula, that the microscopic entropy of the dual CFT precisely reproduces the macroscopic Bekenstein-Hawking area law. This CFT description becomes singular in the extreme Reissner-Nordstrom limit where the black hole has no spin. At this point a second dual CFT description is proposed in which the global part of the U(1) gauge symmetry is promoted to a Virasoro algebra. This second description is also found to re...

Hartman, Thomas; Nishioka, Tatsuma; Strominger, Andrew

2009-01-01T23:59:59.000Z

395

CFT Duals for Extreme Black Holes  

E-Print Network (OSTI)

It is argued that the general four-dimensional extremal Kerr-Newman-AdS-dS black hole is holographically dual to a (chiral half of a) two-dimensional CFT, generalizing an argument given recently for the special case of extremal Kerr. Specifically, the asymptotic symmetries of the near-horizon region of the general extremal black hole are shown to be generated by a Virasoro algebra. Semiclassical formulae are derived for the central charge and temperature of the dual CFT as functions of the cosmological constant, Newton's constant and the black hole charges and spin. We then show, assuming the Cardy formula, that the microscopic entropy of the dual CFT precisely reproduces the macroscopic Bekenstein-Hawking area law. This CFT description becomes singular in the extreme Reissner-Nordstrom limit where the black hole has no spin. At this point a second dual CFT description is proposed in which the global part of the U(1) gauge symmetry is promoted to a Virasoro algebra. This second description is also found to reproduce the area law. Various further generalizations including higher dimensions are discussed.

Thomas Hartman; Keiju Murata; Tatsuma Nishioka; Andrew Strominger

2008-11-26T23:59:59.000Z

396

Hamiltonian thermodynamics of the Schwarzschild black hole  

E-Print Network (OSTI)

Kucha\\v{r} has recently given a detailed analysis of the classical and quantum geometrodynamics of the Kruskal extension of the Schwarzschild black hole. In this paper we adapt Kucha\\v{r}'s analysis to the exterior region of a Schwarzschild black hole with a timelike boundary. The reduced Lorentzian Hamiltonian is shown to contain two independent terms, one from the timelike boundary and the other from the bifurcation two-sphere. After quantizing the theory, a thermodynamical partition function is obtained by analytically continuing the Lorentzian time evolution operator to imaginary time and taking the trace. This partition function is in agreement with the partition function obtained from the Euclidean path integral method; in particular, the bifurcation two-sphere term in the Lorentzian Hamiltonian gives rise to the black hole entropy in a way that is related to the Euclidean variational problem. We also outline how Kucha\\v{r}'s analysis of the Kruskal spacetime can be adapted to the $\\RPthree$ geon, which is a maximal extension of the Schwarzschild black hole with $\\RPthree \\setminus \\{p\\}$ spatial topology and just one asymptotically flat region.

Jorma Louko; Bernard F. Whiting

1994-11-08T23:59:59.000Z

397

Experience in black-box OSPF measurement  

Science Conference Proceedings (OSTI)

OSPF (Open Shortest Path First) is a widely used intra-domain routing protocol in IP networks. Internal processing delays in OSPF implementations impact the speed at which updates propagate in the network, the load on individual routers, and the time ... Keywords: OSPF, SPF calculation, black-box measurements, routing

Aman Shaikh; Albert Greenberg

2001-11-01T23:59:59.000Z

398

Annihilation Emission from the Galactic Black Hole  

E-Print Network (OSTI)

Both diffuse high energy gamma-rays and an extended electron-positron annihilation line emission have been observed in the Galactic Center (GC) region. Although X-ray observations indicate that the galactic black hole Sgr A$^*$ is inactive now, we suggest that Sgr A$^*$ can become active when a captured star is tidally disrupted and matter is accreted into the black hole. As a consequence the galactic black hole could be a powerful source of relativistic protons. We are able to explain the current observed diffuse gamma-rays and the very detailed 511 keV annihilation line of secondary positrons by $p-p$ collisions of such protons, with appropriate injection times and energy. Relativistic protons could have been injected into the ambient material if the black hole captured a 50M$_\\odot$ star at several tens million years ago. An alternative possibility is that the black hole continues to capture stars with $\\sim$1M$_\\odot$ every hundred thousand years. Secondary positrons produced by $p-p$ collisions at energies $\\ga 30$ MeV are cooled down to thermal energies by Coulomb collisions, and annihilate in the warm neutral and ionized phases of the interstellar medium with temperatures about several eV, because the annihilation cross-section reaches its maximum at these temperatures. It takes about ten million years for the positrons to cool down to thermal temperatures so they can diffuse into a very large extended region around the Galactic center. A much more recent star capture may be also able to account for recent TeV observations within 10 pc of the galactic center as well as for the unidentified GeV gamma-ray sources found by EGRET at GC. The spectral difference between the GeV flux and the TeV flux could be explained naturally in this model as well.

K. S. Cheng; D. O. Chernyshov; V. A. Dogiel

2006-03-24T23:59:59.000Z

399

Savannah River National Laboratory Meets with Historically Black Colleges  

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

Savannah River National Laboratory Meets with Historically Black Savannah River National Laboratory Meets with Historically Black Colleges and Universities Savannah River National Laboratory Meets with Historically Black Colleges and Universities February 1, 2013 - 9:00am Addthis South Carolina State University students William Dumpson, left, and Alejandra Chirino, center, talk with Savannah River National Laboratory Director Dr. Terry Michalske at a recent research exchange involving the laboratory and seven historically black colleges and universities. South Carolina State University students William Dumpson, left, and Alejandra Chirino, center, talk with Savannah River National Laboratory Director Dr. Terry Michalske at a recent research exchange involving the laboratory and seven historically black colleges and universities.

400

Black Hills Energy (Gas) - Residential New Construction Rebate Program |  

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

Black Hills Energy (Gas) - Residential New Construction Rebate Black Hills Energy (Gas) - Residential New Construction Rebate Program Black Hills Energy (Gas) - Residential New Construction Rebate Program < Back Eligibility Construction Residential Savings Category Appliances & Electronics Heating & Cooling Home Weatherization Construction Commercial Weatherization Commercial Heating & Cooling Design & Remodeling Other Program Info State Iowa Program Type Utility Rebate Program Rebate Amount Builder Incentive: $800 - $2300 Provider Black Hills Energy Black Hills Energy offers new construction rebates for home builders in the eligible service area. Rebates between $800 and $5,000 are available for a range of efficiency measures incorporated into home construction. Qualifying homes must use natural gas and meet the minimum efficiency

Note: This page contains sample records for the topic "black warrior paradox" 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

Savannah River National Laboratory Meets with Historically Black Colleges  

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

Savannah River National Laboratory Meets with Historically Black Savannah River National Laboratory Meets with Historically Black Colleges and Universities Savannah River National Laboratory Meets with Historically Black Colleges and Universities February 1, 2013 - 9:00am Addthis South Carolina State University students William Dumpson, left, and Alejandra Chirino, center, talk with Savannah River National Laboratory Director Dr. Terry Michalske at a recent research exchange involving the laboratory and seven historically black colleges and universities. South Carolina State University students William Dumpson, left, and Alejandra Chirino, center, talk with Savannah River National Laboratory Director Dr. Terry Michalske at a recent research exchange involving the laboratory and seven historically black colleges and universities.

402

Trumpet-puncture initial data for black holes  

E-Print Network (OSTI)

We propose a new approach, based on the puncture method, to construct black hole initial data in the so-called trumpet geometry, i.e. on slices that asymptote to a limiting surface of non-zero areal radius. Our approach is easy to implement numerically and, at least for non-spinning black holes, does not require any internal boundary conditions. We present numerical results, obtained with a uniform-grid finite-difference code, for boosted black holes and binary black holes. We also comment on generalizations of this method for spinning black holes.

Jason D. Immerman; Thomas W. Baumgarte

2009-08-03T23:59:59.000Z

403

Black Rings, Boosted Strings and Gregory-Laflamme  

E-Print Network (OSTI)

We investigate the Gregory-Laflamme instability for black strings carrying KK-momentum along the internal direction. We demonstrate a simple kinematical relation between the thresholds of the classical instability for the boosted and static black strings. We also find that Sorkin's critical dimension depends on the internal velocity and in fact disappears for sufficiently large boosts. Our analysis implies the existence of an analogous instability for the five-dimensional black ring of Emparan and Reall. We also use our results for boosted black strings to construct a simple model of the black ring and argue that such rings exist in any number of space-time dimensions.

J. L. Hovdebo; R. C. Myers

2006-01-12T23:59:59.000Z

404

Black Carbon Soot Impact on Snow Albedo: A Laboratory Investigation  

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

Black Carbon Soot Impact on Snow Albedo: A Laboratory Investigation Black Carbon Soot Impact on Snow Albedo: A Laboratory Investigation Speaker(s): Odelle Hadley Date: August 13, 2009 - 12:00pm Location: 90-3075 This presentation examines the changing cryosphere and specifically the role of black carbon on the reflectivity of snow. Small amounts of black carbon in snow purportedly contribute to a reduction in snow albedo, contributing to regional climate change and early onset of melting. Our current research focuses on the connection between black carbon and albedo reduction. This presentation will describe our laboratory experiments wherein we make and characterize pure and contaminated snow and assess the black carbon snow albedo reduction as a function of black carbon mixing ratio and snow grain size. Experimental results are compared to verify or

405

Chicano and black radical activism of the 1960s : a comparison between the Brown Berets and the Black Panther Party in California  

E-Print Network (OSTI)

Elaine. A Taste of Power: A Black Womens Story. New York:Enemies nor Friends: Latino, Blacks, Afro-Latinos. New York:The White Scourge: Mexicans, Blacks, and Poor Whites in the

Yaez, Anglica Mara

2010-01-01T23:59:59.000Z

406

Black Hills Power Inc | Open Energy Information  

Open Energy Info (EERE)

Jump to: navigation, search Jump to: navigation, search Name Black Hills Power Inc Place Rapid City, South Dakota Utility Id 19545 Utility Location Yes Ownership I NERC Location WECC NERC MRO Yes NERC WECC Yes Operates Generating Plant Yes Activity Generation Yes Activity Transmission Yes Activity Buying Transmission Yes Activity Distribution Yes Activity Wholesale Marketing Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] Energy Information Administration Form 826[2] SGIC[3] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! Black Hills Power, Inc. Smart Grid Project was awarded $9.576 Recovery Act Funding with a total project value of $19,153,256. Utility Rate Schedules Grid-background.png GL (General Service Large) Commercial GS (General Service - Total Electric) Commercial

407

Geometric description of BTZ black holes thermodynamics  

E-Print Network (OSTI)

We study the properties of the space of thermodynamic equilibrium states of the Ba\\~nados-Teitelboim-Zanelli (BTZ) black hole in (2+1)-gravity. We use the formalism of geometrothermodynamics to introduce in the space of equilibrium states a $2-$dimensional thermodynamic metric whose curvature is non-vanishing, indicating the presence of thermodynamic interaction, and free of singularities, indicating the absence of phase transitions. Similar results are obtained for generalizations of the BTZ black hole which include a Chern-Simons term and a dilatonic field. Small logarithmic corrections of the entropy turn out to be represented by small corrections of the thermodynamic curvature, reinforcing the idea that thermodynamic curvature is a measure of thermodynamic interaction.

Hernando Quevedo; Alberto Sanchez

2008-11-15T23:59:59.000Z

408

Hydrodynamics of R-charged black holes  

E-Print Network (OSTI)

We consider hydrodynamics of N=4 supersymmetric SU(N_c) Yang-Mills plasma at a nonzero density of R-charge. In the regime of large N_c and large 't Hooft coupling the gravity dual description involves an asymptotically Anti- de Sitter five-dimensional charged black hole solution of Behrnd, Cvetic and Sabra. We compute the shear viscosity as a function of chemical potentials conjugated to the three U(1) \\subset SO(6)_R charges. The ratio of the shear viscosity to entropy density is independent of the chemical potentials and is equal to 1/4\\pi. For a single charge black hole we also compute the thermal conductivity, and investigate the critical behavior of the transport coefficients near the boundary of thermodynamic stability.

Dam T. Son; Andrei O. Starinets

2006-01-20T23:59:59.000Z

409

Nonstationary dark energy around a black hole  

Science Conference Proceedings (OSTI)

Numerical simulations of the accretion of test scalar fields with nonstandard kinetic terms (of the k-essence type) onto a Schwarzschild black hole are performed. We find a full dynamical solution for the spherical accretion of a Dirac-Born-Infeld type scalar field. The simulations show that the accretion eventually settles down to a well-known stationary solution. This particular analytical steady state solution maintains two separate horizons. The standard horizon is for the usual particles propagating with the limiting speed of light, while the other sonic horizon is for the k-essence perturbations propagating with the speed of sound around this accreting background. For the case where the k-essence perturbations propagate superluminally, we show that one can send signals from within a black hole during the approach to the stationary solution. We also find that a ghost condensate model settles down to a stationary solution during the accretion process.

Akhoury, Ratindranath; Saotome, Ryo [Michigan Center for Theoretical Physics, Randall Laboratory of Physics, University of Michigan, Ann Arbor, Michigan 48109-1120 (United States); Garfinkle, David [Department of Physics, Oakland University, Rochester, Michigan 48309 (United States); Michigan Center for Theoretical Physics, Randall Laboratory of Physics, University of Michigan, Ann Arbor, Michigan 48109-1120 (United States); Vikman, Alexander [Theory Division, CERN, Geneva 23, CH-1211 (Switzerland)

2011-04-15T23:59:59.000Z

410

Black branes dual to striped phases  

E-Print Network (OSTI)

We construct inhomogeneous charged black branes in AdS, holographically dual to a phase at finite chemical potential with spontaneously broken translation invariance in one direction. These are obtained numerically, solving PDEs for the fully backreacted system. Fixing the periodicity scale, we find a second order phase transition to the inhomogeneous phase. We comment on the properties of the state emerging at low temperatures. For some models we demonstrate the existence of a branch of striped solutions but no continuous phase transition.

Benjamin Withers

2013-03-30T23:59:59.000Z

411

Black Diamond Power Co | Open Energy Information  

Open Energy Info (EERE)

Black Diamond Power Co Black Diamond Power Co Place West Virginia Utility Id 1764 Utility Location Yes Ownership I NERC Location RFC NERC RFC Yes Activity Distribution Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] Energy Information Administration Form 826[2] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png No rate schedules available. Average Rates Residential: $0.1200/kWh Commercial: $0.0685/kWh The following table contains monthly sales and revenue data for Black Diamond Power Co (West Virginia). Month RES REV (THOUSAND $) RES SALES (MWH) RES CONS COM REV (THOUSAND $) COM SALES (MWH) COM CONS IND_REV (THOUSAND $) IND SALES (MWH) IND CONS OTH REV (THOUSAND $) OTH SALES (MWH) OTH CONS TOT REV (THOUSAND $) TOT SALES (MWH) TOT CONS

412

In Situ Causticizing for Black Liquor Gasification  

Science Conference Proceedings (OSTI)

Black liquor gasification offers a number of attractive incentives to replace Tomlinson boilers but it also leads to an increase in the causticizing load. Reasons for this have been described in previous reports (FY04 ERC, et.al.). The chemistries have also been covered but will be reviewed here briefly. Experimental results of the causticizing reactions with black liquor are presented here. Results of the modeling work were presented in detail in the Phase 1 report. They are included in Table 2 for comparison but will not be discussed in detail. The causticizing agents were added to black liquor in the ratios shown in Table 1, mixed, and then spray-dried. The mixture ratios (doping levels) reflect amount calculated from the stoichiometry above to achieve specified conversions shown in the table. The solids were sieved to 63-90 microns for use in the entrained flow reactors. The firing conditions are shown in Table 2. Pictures and descriptions of the reactors can be found in the Phase 1 annual report. Following gasification, the solids (char) was collected and analyzed by coulometric titration (for carbonate and total carbon), and by inductively coupled plasma emission spectroscopy (ICP) for a wide array of metals.

Scott Alan Sinquefield

2005-10-01T23:59:59.000Z

413

ARM - Field Campaign - Characterization of Black Carbon Mixing State  

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

govCampaignsCharacterization of Black Carbon Mixing State govCampaignsCharacterization of Black Carbon Mixing State Related Campaigns Characterization of Black Carbon Mixing State - II 2014.02.15, Sedlacek, OSC Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign : Characterization of Black Carbon Mixing State 2012.11.01 - 2013.06.14 Lead Scientist : Arthur Sedlacek For data sets, see below. Description The objective of the proposed experiments was to characterize the mixing state of black carbon produced in biomass burning using the single particle soot photometer (SP2). The large uncertainty associated with black carbon (BC) direct forcing is due, in part, to the dependence of light absorption of BC-containing particles on the position of the BC aggregate within the particle. It is

414

Black Hills Energy - Solar Power Program | Department of Energy  

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

Black Hills Energy - Solar Power Program Black Hills Energy - Solar Power Program Black Hills Energy - Solar Power Program < Back Eligibility Commercial Fed. Government General Public/Consumer Industrial Local Government Nonprofit Residential Schools State Government Savings Category Solar Buying & Making Electricity Program Info Start Date 7/1/2006 State Colorado Program Type Performance-Based Incentive Rebate Amount Systems up to 10 kW: $0.1267/kWh (only for first 5 kW) Systems larger than 10 kW up to 100 kW: $0.16/kWh Provider Black Hills Energy Black Hills Energy has a performance-based incentive (PBI) for photovoltaic (PV) systems up to 100 kilowatts (kW) in capacity. In exchange for these incentives, Black Hills Energy earns the right to the renewable energy credits (RECs) associated with the PV-generated electricity for a period of

415

Bounding the Greybody Factors for Non-rotating Black Holes  

E-Print Network (OSTI)

Semiclassical black holes emit radiation called Hawking radiation. Such radiation, as seen by an asymptotic observer far outside the black hole, differs from original radiation near the horizon of the black hole by a redshift factor and the so-called "greybody factor". In this paper, we concentrate on the greybody factor-various bounds for the greybody factors of non-rotating black holes are obtained, concentrating on charged Reissner-Nordstrom and Reissner-Nordstrom-de Sitter black holes. These bounds can be derived by using a 2x2 transfer matrix formalism. It is found that the charges of black holes act as efficient barriers. Furthermore, adding extra dimensions to spacetime can shield Hawking radiation. Finally, the cosmological constant can increase the emission rate of Hawking radiation.

Tritos Ngampitipan; Petarpa Boonserm

2012-11-17T23:59:59.000Z

416

Acoustic analogs of two-dimensional black holes  

E-Print Network (OSTI)

We present a general method for constructing acoustic analogs of the black hole solutions of two-dimensional (2D) dilaton gravity. Because by dimensional reduction every spherically symmetric, four-dimensional (4D) black hole admits a 2D description, the method can be also used to construct analogue models of 4D black holes. We also show that after fixing the gauge degrees of freedom the 2D gravitational dynamics is equivalent to an one-dimensional fluid dynamics. This enables us to find a natural definition of mass $M$, temperature $T$ and entropy $S$ of the acoustic black hole. In particular the first principle of thermodynamics $dM=TdS$ becomes a consequence of the fluid dynamics equations. We also discuss the general solutions of the fluid dynamics and two particular cases, the 2D Anti-de sitter black hole and the 4D Schwarzschild black hole.

Mariano Cadoni

2004-10-28T23:59:59.000Z

417

Black Holes at Future Colliders and Beyond: a Topical Review  

E-Print Network (OSTI)

One of the most dramatic consequences of low-scale (~1 TeV) quantum gravity in models with large or warped extra dimension(s) is copious production of mini black holes at future colliders and in ultra-high-energy cosmic ray collisions. Hawking radiation of these black holes is expected to be constrained mainly to our three-dimensional world and results in rich phenomenology. In this topical review we discuss the current status of astrophysical observations of black holes and selected aspects of mini black hole phenomenology, such as production at colliders and in cosmic rays, black hole decay properties, Hawking radiation as a sensitive probe of the dimensionality of extra space, as well as an exciting possibility of finding new physics in the decays of black holes.

Greg Landsberg

2006-07-26T23:59:59.000Z

418

Discriminating Supersymmetry and Black Holes at the Large Hadron Collider  

E-Print Network (OSTI)

We show how to differentiate the minimal supersymmetric extension of the standard model from black hole events at the Large Hadron Collider. Black holes are simulated with the CATFISH generator. Supersymmetry simulations use a combination of PYTHIA and ISAJET. Our study, based on event shape variables, visible and missing momenta, and analysis of dilepton events, demonstrates that supersymmetry and black hole events at the LHC can be easily discriminated.

Arunava Roy; Marco Cavaglia

2008-01-21T23:59:59.000Z

419

Complementary role of the pressure in the black hole thermodynamics  

E-Print Network (OSTI)

In black hole thermodynamics of certain models, the thermodynamic first law may contain the pressure term. The corresponding entropy follows the area law whereas the thermodynamic energy is not the same with the black hole mass. If the pressure can be decomposed into two parts and recombined with the original thermodynamic quantities, then the thermodynamic energy becomes the black hole mass and the entropy satisfying the area law turns out to be the corrected entropy called the Wald entropy, respectively.

Son, Edwin J

2013-01-01T23:59:59.000Z

420

String-corrected dilatonic black holes in d dimensions  

Science Conference Proceedings (OSTI)

We solve the dilaton field equation in the background of a spherically symmetric black hole in bosonic or heterotic string theory with curvature-squared corrections in arbitrary d spacetime dimensions. We then apply this result to obtain a spherically symmetric black hole solution with dilatonic charge and curvature-squared corrections in bosonic or heterotic string theory compactified on a torus. For this black hole, we obtain its free energy, entropy, temperature, specific heat, and mass.

Moura, Filipe [Centro de Matematica da Universidade do Minho, Escola de Ciencias, Campus de Gualtar, 4710-057 Braga (Portugal)

2011-02-15T23:59:59.000Z

Note: This page contains sample records for the topic "black warrior paradox" 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.


421

BlackBerry for Work: Productivity for Professionals, 1st edition  

Science Conference Proceedings (OSTI)

The BlackBerry is cool, and the BlackBerry is fun, but the BlackBerry also means serious business. For those of you who bought your BlackBerry to help get your life organized and free yourself from the ball-and-chain of desktop computing, BlackBerry ...

Kunal Mittal; Shikha Gupta

2010-03-01T23:59:59.000Z

422

Black Hills Energy (Gas) - Residential Energy Efficiency Program |  

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

Black Hills Energy (Gas) - Residential Energy Efficiency Program Black Hills Energy (Gas) - Residential Energy Efficiency Program Black Hills Energy (Gas) - Residential Energy Efficiency Program < Back Eligibility Residential Savings Category Heating & Cooling Commercial Heating & Cooling Heating Home Weatherization Commercial Weatherization Sealing Your Home Ventilation Appliances & Electronics Water Heating Maximum Rebate All Incentives: $750/customer Ceiling/Wall/Foundation Insulation: $500 Infiltration Control/Caulking/Weather Stripping: $200 Duct Insulation: $150 Program Info State Colorado Program Type Utility Rebate Program Rebate Amount Qualified New Homes (Builders): Contact Black Hills Energy Evaluations: Free or reduced cost Storage Water Heater: $75 or $300 Tankless Water Heater: $300 Furnace/Boiler Maintenance: $30 or $100

423

Black Hills Energy (Gas) - Commercial Energy Efficiency Program |  

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

Black Hills Energy (Gas) - Commercial Energy Efficiency Program Black Hills Energy (Gas) - Commercial Energy Efficiency Program Black Hills Energy (Gas) - Commercial Energy Efficiency Program < Back Eligibility Commercial Industrial Institutional Local Government Nonprofit Schools State Government Savings Category Heating & Cooling Commercial Heating & Cooling Heating Home Weatherization Commercial Weatherization Sealing Your Home Construction Design & Remodeling Other Appliances & Electronics Water Heating Windows, Doors, & Skylights Maximum Rebate General: Contact Black Hills Energy; Rebates over $10,000 must be pre-approved Ceiling/Wall Insulation: $10,000 Infiltration Control: $1,500 Energy Evaluations: $1500 Custom: 50% of incremental cost Program Info Start Date 7/1/2010 State Colorado Program Type Utility Rebate Program

424

Hazards of black blasting powder in underground coal mining  

SciTech Connect

To help reduce explosion hazards in coal mines using dangerous black blasting powder, this circular outlines precautions designed to increase the safety factor in using this explosive.

Harrington, D.; Warncke, R.G.

1949-01-01T23:59:59.000Z

425

BlackBerry Torch 9800 Smartphone - Safety and Product ...  

Science Conference Proceedings (OSTI)

... The BlackBerry device should not be placed in household waste bins. ... to determine if the device is adequately shielded from external RF energy. ...

2012-11-15T23:59:59.000Z

426

National Conference of Black Mayors, Inc. | Department of Energy  

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

capacity for energy and environmental planning through computer-based technology, Internet access, and a training workshop. National Conference of Black Mayors, Inc. More...

427

Energy Distribution of a Charged Regular Black Hole  

E-Print Network (OSTI)

We calculate the energy distribution of a charged regular black hole by using the energy-momentum complexes of Einstein and M{\\o}ller.

Irina Radinschi

2000-11-20T23:59:59.000Z

428

Black hole bombs and explosions: from astrophysics to particle physics  

E-Print Network (OSTI)

Black holes are the elementary particles of gravity, the final state of sufficiently massive stars and of energetic collisions. With a forty-year long history, black hole physics is a fully-blossomed field which promises to embrace several branches of theoretical physics. Here I review the main developments in highly dynamical black holes with an emphasis on high energy black hole collisions and probes of particle physics via superradiance. This write-up, rather than being a collection of well known results, is intended to highlight open issues and the most intriguing results.

Cardoso, Vitor

2013-01-01T23:59:59.000Z

429

Black Hole evaporation in semi-classical approach  

E-Print Network (OSTI)

As well as known, the black hole evaporation problem is famous problem. Because the S.W.Hawking found the black holes emit light at the future null infinity as a thermal radiation \\cite{H}, we think that the black holes may be vanish. However, to prove this problem, we should solve field equation, i.e. forth order partial differential equations \\cite{Ford}\\cite{BD}. However, we can find a method to solve this equation, and we could prove that the black holes finally vanish. To solve this problem we use dynamical horizons equation in the Vaidya spacetime.

Shintaro Sawayama

2011-02-15T23:59:59.000Z

430

Black Philanthropy in the Visual Arts: A Contemporary Perspective.  

E-Print Network (OSTI)

??This paper is intended as a contribution to a contemporary analysis of Black Philanthropy in the visual arts. Its purpose is to answer the central (more)

Word, Tanekeya S.

2011-01-01T23:59:59.000Z

431

Effects of the Substrate Topography on the Black Pad Formation ...  

Science Conference Proceedings (OSTI)

Black pad is known to be caused by the hypercorrosion of Ni in the IG solution, however a thorough understanding on the phenomenon has not been procured...

432

BlackLight Power Inc | Open Energy Information  

Open Energy Info (EERE)

search Name BlackLight Power Inc Place Cranbury, New Jersey Zip 8512 Sector Hydro, Hydrogen Product Researching a means of producing energy by catalysing the reaction of...

433

CO2 Pyrolysis and Gasification of Kraft Black.  

E-Print Network (OSTI)

??Kraft black liquor, the bi-product of the kraft pulping process, is concentrated in evaporators and burned at high solids content in recovery boilers. The purpose (more)

Connolly, T. Sean

2006-01-01T23:59:59.000Z

434

Black Hills Energy (Gas)- Commercial Energy Efficiency Rebate Programs  

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

Black Hills Energy offers commercial and industrial customers incentives to encourage energy efficiency in eligible businesses. Prescriptive rebates are available for furnace and boiler...

435

Black Hills Energy (Gas)- Commercial Energy Efficiency Program  

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

Black Hills Energy offers multiple programs for Colorado commercial and industrial customers to save natural gas in eligible facilities. The commercial prescriptive rebate program provides...

436

Residential segregation and health behavior among Black adults  

E-Print Network (OSTI)

Separate and unequal: Residential segregation and Black1988). The dimensions of residential segregation. SocialD. (Under review). Residential segregation and exercise

Corral, Irma

2009-01-01T23:59:59.000Z

437

Black Dog, South Dakota: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Edit with form History Share this page on Facebook icon Twitter icon Black Dog, South Dakota: Energy Resources Jump to: navigation, search Equivalent URI DBpedia...

438

Manual of BlackMax, a black-hole event generator with rotation, recoil, split branes, and brane tension  

E-Print Network (OSTI)

This is the users manual of the black-hole event generator BlackMax, which simulates the experimental signatures of microscopic and Planckian black-hole production and evolution at proton-proton, proton-antiproton and electron-positron colliders in the context of brane world models with low-scale quantum gravity. The generator is based on phenomenologically realistic models free of serious problems that plague low-scale gravity. It includes all of the black-hole gray-body factors known to date and incorporates the effects of black-hole rotation, splitting between the fermions, non-zero brane tension and black-hole recoil due to Hawking radiation (although not all simultaneously).

De-Chang Dai; Cigdem Issever; Eram Rizvi; Glenn Starkman; Dejan Stojkovic; Jeff Tseng

2009-02-20T23:59:59.000Z

439

Black Hole Remnants and Dark Matter  

DOE Green Energy (OSTI)

We argue that, when the gravity effect is included, the generalized uncertainty principle (GUP) may prevent black holes from total evaporation in a similar way that the standard uncertainty principle prevents the hydrogen atom from total collapse. Specifically we invoke the GUP to obtain a modified Hawking temperature, which indicates that there should exist non-radiating remnants (BHR) of about Planck mass. BHRs are an attractive candidate for cold dark matter. We investigate an alternative cosmology in which primordial BHRs are the primary source of dark matter.

Chen, Pisin

2002-07-31T23:59:59.000Z

440

Acoustic analogues of black hole singularities  

SciTech Connect

We search for acoustic analogues of a spherical symmetric black hole with a pointlike source. We show that the gravitational system has a dynamical counterpart in the constrained, steady motion of a fluid with a planar source. The equations governing the dynamics of the gravitational system can be exactly mapped in those governing the motion of the fluid. The different meaning that singularities and sources have in fluid dynamics and in general relativity is also discussed. Whereas in the latter a pointlike source is always associated with a (curvature) singularity in the former the presence of sources does not necessarily imply divergences of the fields.

Cadoni, Mariano; Mignemi, Salvatore [Dipartimento di Fisica, Universita di Cagliari, and INFN, Sezione di Cagliari, Cittadella Universitaria 09042 Monserrato (Italy); Dipartimento di Matematica, Universita di Cagliari, viale Merello 92, 09123 Cagliari, Italy, and INFN, Sezione di Cagliari (Italy)

2005-10-15T23:59:59.000Z

Note: This page contains sample records for the topic "black warrior paradox" 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.


441

Acoustic analogues of black hole singularities  

E-Print Network (OSTI)

We search for acoustic analogues of a spherical symmetric black hole with a pointlike source. We show that the gravitational system has a dynamical counterpart in the constrained, steady motion of a fluid with a planar source. The equations governing the dynamics of the gravitational system can be exactly mapped in those governing the motion of the fluid. The different meaning that singularities and sources have in fluid dynamics and in general relativity is also discussed. Whereas in the latter a pointlike source is always associated with a (curvature) singularity in the former the presence of sources does not necessarily imply divergences of the fields.

Mariano Cadoni; Salvatore Mignemi

2005-04-29T23:59:59.000Z

442

Inverse hyperbolic problems and optical black holes  

E-Print Network (OSTI)

In this paper we give a more geometrical formulation of the main theorem in [E1] on the inverse problem for the second order hyperbolic equation of general form with coefficients independent of the time variable. We apply this theorem to the inverse problem for the equation of the propagation of light in a moving medium (the Gordon equation). Then we study the existence of black and white holes for the general hyperbolic and for the Gordon equation and we discuss the impact of this phenomenon on the inverse problems.

Gregory Eskin

2008-09-23T23:59:59.000Z

443

Radion clouds around evaporating black holes  

E-Print Network (OSTI)

A Kaluza-Klein model, with a matter source associated with Hawking radiation from an evaporating black hole, is used to obtain a simple form for the radion effective potential. The environmental effect generally causes a matter-induced shift of the radion vacuum, resulting in the formation of a radion cloud around the hole. There is an albedo due to the radion cloud, with an energy dependent reflection coefficient that depends upon the size of the extra dimensions and the temperature of the hole.

J. R. Morris

2009-09-03T23:59:59.000Z

444

Black-body radiation in extra dimensions  

E-Print Network (OSTI)

The general form of the Stefan-Boltzmann law for the energy density of black-body radiation is generalized to a spacetime with extra dimensions using standard kinetic and thermodynamic arguments. From statistical mechanics one obtains an exact formula. In a field-theoretic derivation, the Maxwell field must be quantized. The notion of electric and magnetic fields is different in spacetimes with more than four dimensions. While the energy-momentum tensor for the Maxwell field is traceless in four dimensions, it is not so when there are extra dimensions. But it is shown that its thermal average is traceless and in agreement with the thermodynamic results.

H. Alnes; F. Ravndal; I. K. Wehus

2005-06-16T23:59:59.000Z

445

Energy flow in acoustic black holes  

SciTech Connect

We present the results of an analysis of superradiant energy flow due to scalar fields incident on an acoustic black hole. In addition to providing independent confirmation of the recent results in [E. Berti, V. Cardoso, and J. P. S. Lemos, Phys. Rev. D 70, 124006 (2004).], we determine in detail the profile of energy flow everywhere outside the horizon. We confirm explicitly that in a suitable frame the energy flow is inward at the horizon and outward at infinity, as expected on physical grounds.

Choy, K.; Kruk, T.; Carrington, M.E.; Fugleberg, T.; Zahn, J.; Kobes, R.; Kunstatter, G.; Pickering, D. [Department of Physics, Brandon University, Brandon, Manitoba, R7A 6A9 (Canada) and Winnipeg Institute for Theoretical Physics, Winnipeg, Manitoba (Canada); Department of Physics, University of Winnipeg, Winnipeg, Manitoba, R7A 6A9 (Canada) and Winnipeg Institute for Theoretical Physics, Winnipeg, Manitoba (Canada); Department of Mathematics, Brandon University, Brandon, Manitoba, R7A 6A9 (Canada)

2006-05-15T23:59:59.000Z

446

T-602: BlackBerry Enterprise Server Input Validation Flaw in...  

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

02: BlackBerry Enterprise Server Input Validation Flaw in BlackBerry Web Desktop Manager Permits Cross-Site Scripting Attacks T-602: BlackBerry Enterprise Server Input Validation...

447

Black Same-Sex Couples in California: Data from Census 2000  

E-Print Network (OSTI)

service Public Assistance Disabled Race/ethnicity BlackBlack Non-black Age (mean) Disabled Citizen Military serviceassistance (6% v. 2%) and disabled (28% v. 20%). They are

Gates, Gary; Sears, Brad

2005-01-01T23:59:59.000Z

448

Black Voices, German Rebels: Acts of Masculinity in Postwar Popular Culture  

E-Print Network (OSTI)

59-71. Fanon, Frantz. Black Skin, White Masks. Translated by2006. . We Real Cool: Black Men and Masculinity. New1985. In Not So Plain as Black and White: Afro-German

Layne, Priscilla Dionne

2011-01-01T23:59:59.000Z

449

Black Holes, q-Deformed 2d Yang-Mills, and Non-perturbative Topological Strings  

E-Print Network (OSTI)

Two-dimensional Yang-Mills, black holes and topologicalfor the two- dimensional black hole, Nucl. Phys. B 622 (LBNL- 56688 Black Holes, q-Deformed 2d Yang-Mills, and Non-

Aganagic, Mina

2009-01-01T23:59:59.000Z

450

Black and Korean: Racialized Development and the Korean American Subject in Korean/American Fiction  

E-Print Network (OSTI)

say that bars and clubs for black GIs are often smaller andshows the hierarchy of white over black. See Saundra Pollockare racialized as white or black depend[ing] on with whom

Lim, Jeehyun

2013-01-01T23:59:59.000Z

451

California black rails depend on irrigation-fed wetlands in the Sierra Nevada foothills  

E-Print Network (OSTI)

use of the California black rail in the southwestern USA.RE, Legare M. 1994. Black rail (Laterallus jamaicensis). In:population of the black rail in Yuba County, California.

Richmond, Orien M. W.; Chen, Stephanie K.; Risk, Benjamin B.; Tecklin, Jerry; Beissinger, Steven R.

2010-01-01T23:59:59.000Z

452

NSA-Old Black Spruce Site  

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

NSA-OBS) NSA-OBS) The NSA-OBS site from the air. This aerial shot of the OBS site shows the generator in the lower-right corner, one of the huts in the upper-left corner, and part of the boardwalk leading away from the hut. View an aerial photo-map of the NSA-OBS site. OBS spruce trees and flux tower The road to the OBS site. The road to the OBS site was often a muddy mess, accessable only by ARGO all-terrain vehicles, and even they got stuck often. The OBS flux tower The NSA black spruce carbon model evaluation site and TE canopy access tower. Oblique view of the trail leading into the NSA Old Black Spruce site. Highway 391 is beyond the image at the bottom and the power line is viewable at the top of the image. The NSA-OBS site would be off to the upper left. The NSA-OBS Rohn tower where Amar Bazzaz of Harvard University is climbing the tower for maintenance.

453

Sequencing the Black Aspergilli species complex  

Science Conference Proceedings (OSTI)

The ~15 members of the Aspergillus section Nigri species complex (the "Black Aspergilli") are significant as platforms for bioenergy and bioindustrial technology, as members of soil microbial communities and players in the global carbon cycle, and as food processing and spoilage agents and agricultural toxigens. Despite their utility and ubiquity, the morphological and metabolic distinctiveness of the complex's members, and thus their taxonomy, is poorly defined. We are using short read pyrosequencing technology (Roche/454 and Illumina/Solexa) to rapidly scale up genomic and transcriptomic analysis of this species complex. To date we predict 11197 genes in Aspergillus niger, 11624 genes in A. carbonarius, and 10845 genes in A. aculeatus. A. aculeatus is our most recent genome, and was assembled primarily from 454-sequenced reads and annotated with the aid of >2 million 454 ESTs and >300 million Solexa ESTs. To most effectively deploy these very large numbers of ESTs we developed 2 novel methods for clustering the ESTs into assemblies. We have also developed a pipeline to propose orthologies and paralogies among genes in the species complex. In the near future we will apply these methods to additional species of Black Aspergilli that are currently in our sequencing pipeline.

Kuo, Alan; Salamov, Asaf; Zhou, Kemin; Otillar, Robert; Baker, Scott; Grigoriev, Igor

2011-03-11T23:59:59.000Z

454

Extracting black hole physics from the lattice  

E-Print Network (OSTI)

We perform lattice simulations of N D0-branes at finite temperature in the decoupling limit, namely 16 supercharge SU(N) Yang-Mills quantum mechanics in the 't Hooft limit. At low temperature this theory is conjectured to be dual to certain supergravity black holes. We emphasize that the existence of a non-compact moduli space renders the partition function of the quantum mechanics theory divergent, and we perform one loop calculations that demonstrate this explicitly. In consequence we use a scalar mass term to regulate this divergence and argue that the dual black hole thermodynamics may be recovered in the appropriate large N limit as the regulator is removed. We report on simulations for N up to 5 including the Pfaffian phase, and N up to 12 in the phase quenched approximation. Interestingly, in the former case, where we may calculate this potentially difficult phase, we find that it appears to play little role dynamically over the temperature range tested, which is certainly encouraging for future simulations of this theory.

Simon Catterall; Toby Wiseman

2009-09-27T23:59:59.000Z

455

Echo Tomography of Black Hole Accretion Flows  

E-Print Network (OSTI)

We discuss technologies for micro-arcsec echo mapping of black hole accretion flows in Active Galactic Nuclei (AGN). Echo mapping employs time delays, Doppler shifts, and photoionisation physics to map the geometry, kinematics, and physical conditions in the reprocessing region close to a compact time-variable source of ionizing radiation. Time delay maps are derived from detailed analysis of variations in lightcurves at different wavelengths. Echo mapping is a maturing technology at a stage of development similar to that of radio interferometry just before the VLA. The first important results are in, confirming the basic assumptions of the method, measuring the sizes of AGN emission line regions, delivering dozens of black hole masses, and showing the promise of the technique. Resolution limits with existing AGN monitoring datasets are typically ~5-10 light days. This should improve down to 1-2 light days in the next-generation echo mapping experiments, using facilities like Kronos and Robonet that are designed for and dedicated to sustained spectroscopic monitoring. A light day is 0.4 micro-arcsec at redshift 0.1, thus echo mapping probes regions 10^3 times smaller than VLBI, and 10^5 times smaller than HST.

Keith Horne

2003-01-14T23:59:59.000Z

456

The center of mass energy of two colliding particles in the STU black holes  

E-Print Network (OSTI)

In this paper we consider collision of two particle near the STU black hole and calculate center of mass energy. In the case of uncharged black hole we find that the maximum energy obtained near the black hole horizon which similarly happen for charged black hole. We verify that the black hole charge may be decreased or increased the center of mass energy near the black hole horizon.

Saadat, Hassan

2013-01-01T23:59:59.000Z

457

Electric Charge in Interaction with Magnetically Charged Black Holes  

E-Print Network (OSTI)

We examine the angular momentum of an electric charge e placed at rest outside a dilaton black hole with magnetic charge Q. The electromagnetic angular momentum which is stored in the electromagnetic field outside the black hole shows several common features regardless of the dilaton coupling strength, though the dilaton black holes are drastically different in their spacetime structure depending on it. First, the electromagnetic angular momentum depends on the separation distance between the two objects and changes monotonically from eQ to 0 as the charge goes down from infinity to the horizon, if rotational effects of the black hole are discarded. Next, as the black hole approaches extremality, however, the electromagnetic angular momentum tends to be independent of the distance between the two objects. It is then precisely $eQ$ as in the electric charge and monopole system in flat spacetime. We discuss why these effects are exhibited and argue that the above features are to hold in widely generic settings including black hole solutions in theories with more complicated field contents, by addressing the no hair theorem for black holes and the phenomenon of field expulsion exhibited by extremal black holes.

J. H. Kim; Sei-Hoon Moon

2007-07-30T23:59:59.000Z

458

Nonrotating black hole in a post-Newtonian tidal environment  

E-Print Network (OSTI)

We examine the motion and tidal dynamics of a nonrotating black hole placed within a post-Newtonian external spacetime. The tidal perturbation created by the external environment is treated as a small perturbation. At a large distance from the black hole, the gravitational field of the external distribution of matter is assumed to be sufficiently weak to be adequately described by the (first) post-Newtonian approximation to general relativity. There, the black hole is treated as a monopole contribution to the total gravitational field. There exists an overlap in the domains of validity of each description, and the black-hole and post-Newtonian metrics are matched in the overlap. The matching procedure produces the equations of motion for the black hole and the gravito-electric and gravito-magnetic tidal fields acting on the black hole. We first calculate the equations of motion and tidal fields by making no assumptions regarding the nature of the post-Newtonian environment; this could contain a continuous distribution of matter or any number of condensed bodies. We next specialize our discussion to a situation in which the black hole is a member of a post-Newtonian two-body system. As an application of our results, we examine the geometry of the deformed event horizon and calculate the tidal heating of the black hole, the rate at which it acquires mass as a result of its tidal interaction with the companion body.

Stephanne Taylor; Eric Poisson

2008-06-18T23:59:59.000Z

459

Correlation loss and multipartite entanglement across a black hole horizon  

Science Conference Proceedings (OSTI)

We investigate the Hawking effect on entangled fields. By considering a scalar field which is in a two-mode squeezed state from the point of view of freely falling (Kruskal) observers crossing the horizon of a Schwarzschild black hole, we study the degradation ... Keywords: Hawking-Unruh effect, Schwarzschild black holes, continuous variable correlations, multipartite entanglement

Gerardo Adesso; Ivette Fuentes-Schuller

2009-07-01T23:59:59.000Z

460

Black hole phase transitions in Horava-Lifshitz gravity  

SciTech Connect

We study black hole phase transitions in (deformed) Horava-Lifshitz (H-L) gravity, including the charged/uncharged topological black holes and KS black hole. Stability analysis and state space geometry are both used. We find interesting phase structures in these black holes, some of the properties are never observed in Einstein gravity. Particularly, the stability properties of black holes in H-L gravity with small radius change dramatically, which can be considered as a leak of information about the small scale behavior of spacetime. A new black hole local phase transition in H-L gravity which cannot be revealed by thermodynamical metrics has been found. There is an infinite discontinuity at the specific heat curve for charged black hole in H-L gravity with hyperbolic event horizon. However, this discontinuity does not have a corresponding curvature singularity of thermodynamical metrics. Our results may provide new insights towards a better understanding of the H-L gravity, as well as black hole thermodynamics.

Cao Qiaojun; Chen Yixin; Shao Kainan [Zhejiang Institute of Modern Physics, Zhejiang University, Hangzhou, 310027 (China)

2011-03-15T23:59:59.000Z

Note: This page contains sample records for the topic "black warrior paradox" 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

Effects of Black Carbon Aerosols on the Indian Monsoon  

Science Conference Proceedings (OSTI)

A six-member ensemble of twentieth-century simulations with changes to only time-evolving global distributions of black carbon aerosols in a global coupled climate model is analyzed to study the effects of black carbon (BC) aerosols on the Indian ...

Gerald A. Meehl; Julie M. Arblaster; William D. Collins

2008-06-01T23:59:59.000Z

462

Moduli Vacuum Bubbles Produced by Evaporating Black Holes  

E-Print Network (OSTI)

We consider a model with a toroidally compactified extra dimension giving rise to a temperature-dependent 4d effective potential with one-loop contributions due to the Casimir effect, along with a 5d cosmological constant. The forms of the effective potential at low and high temperatures indicates a possibility for the formation of a domain wall bubble, formed by the modulus scalar field, surrounding an evaporating black hole. This is viewed as an example of a recently proposed black hole vacuum bubble arising from matter-sourced moduli fields in the vicinity of an evaporating black hole [D. Green, E. Silverstein, and D. Starr, Phys. Rev. D74, 024004 (2006), arXiv:hep-th/0605047]. The black hole bubble can be highly opaque to lower energy particles and photons, and thereby entrap them within. For high temperature black holes, there may also be a symmetry-breaking black hole bubble of false vacuum of the type previously conjectured by Moss [I.G. Moss, Phys. Rev. D32,1333 (1985)], tending to reflect low energy particles from its wall. A double bubble composed of these two different types of bubble may form around the black hole, altering the hole's emission spectrum that reaches outside observers. Smaller mass black holes that have already evaporated away could have left vacuum bubbles behind that contribute to the dark matter.

J. R. Morris

2007-08-14T23:59:59.000Z

463

Searching for Black Holes with the ATLAS Detector  

Science Conference Proceedings (OSTI)

Models with extra spacial dimensions offer a new way to address problems in the Standard Model. The most spectacular manifestation of these would be the production and decay of microscopic black holes. The outlook and potential of the ATLAS detector at the LHC to discover and measure black holes in models with large extra dimensions is presented.

Frost, James [University of Cambridge, Cavendish Laboratory, Madingley Road, Cambridge, CB3 0HE (United Kingdom)

2008-11-23T23:59:59.000Z

464

Automatic morphological categorisation of carbon black nano-aggregates  

Science Conference Proceedings (OSTI)

Nano-technology is the study of matter behaviour on atomic and molecular scale (i.e. nano-scale). In particular, carbon black is a nano-material generally used for the reinforcement of rubber compounds. Nevertheless, the exact reason behind its success ... Keywords: aggregate morphology classifying, carbon black, image processing, machine-learning

Juan Lpez-de-Uralde; Iraide Ruiz; Igor Santos; Agustn Zubillaga; Pablo G. Bringas; Ana Okariz; Teresa Guraya

2010-08-01T23:59:59.000Z

465

Report on the WORKSHOP ON COMMERCIALIZATION OF BLACK LIQUOR  

E-Print Network (OSTI)

.3. Gasifier Supplier Perspectives 11 Black Liquor Gasifier Suppliers 12 Biomass Gasifier Suppliers 13 5 exists for Key ideas from the workshop... commercializing black liquor gasifier/ combined Techno~og~ supp!iers have not seen convIncIng evidence of cycle (BLGCC) and biomass-gasifier/combined market opportunity

466

Deep Frames, White Men's Discourse, and Black Female Bodies  

E-Print Network (OSTI)

In this qualitative study, I examine the persistent trend of black women as an excluded relationship partner for white men. Integral to understanding the exclusion of black women as relationship partners is the construction of black female bodies, by influential white men historically and contemporarily, as the abject opposite of hegemonic femininity, which holds "middle-class, heterosexual, [w]hite femininity" as the norm (Collins 2005:193). This construction essentially places black women outside the bounds of hegemonic femininity, beauty, sexuality, and womanhood. Using the theoretical concept deep frame, which is the "conceptual infrastructure of the mind" (Lakoff 2006a:12) and representative of one's commonsense world view, I argue that the ways in which influential white men have constructed black female bodies is a critical component of the raced, gendered, and classed deep frame of white men. This deep frame undergirds how many white men perceive, interpret, understand, emote, and engage in actions where black women are concerned. Hence in this study, I qualitatively examine, through analyzing and interpreting the in-depth online questionnaires of 134 white male respondents, how the deep frame of white men affects how they perceive black women and ultimately the relationships they seek with black women. The results of the study show that many white male respondents, despite most having very limited or no personal interactions with black women, viewed black women through the one-dimensional lens of the raced, gendered, and classed deep frame. Many respondents perceived black women as unattractive unless capable of a white normative standard, as possessing a negative "black" culture, and as possessing negative and "unfeminine" attributes that make them complicit in their own rejection. These findings show how the deep frame disciplines white men to view black women as "out of bounds" as legitimate relationship partners, and disciplines the types of relationships they seek with black women. The results of this study also reveal that the conceptual approach of deep frame rooted in an understanding of the power of influential white men to control and construct society provides a theoretical alternative to the outmoded interracial marriage theories of caste and exchange.

Slatton, Brittany C.

2009-08-01T23:59:59.000Z

467

Fossil Energy Acting Assistant Secretary Recognized at Black Engineer of  

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

Fossil Energy Acting Assistant Secretary Recognized at Black Fossil Energy Acting Assistant Secretary Recognized at Black Engineer of the Year Awards Fossil Energy Acting Assistant Secretary Recognized at Black Engineer of the Year Awards February 19, 2013 - 8:54am Addthis Director Dot Harris presents Chris Smith, Principal Deputy Assistant Secretary and Acting Assistant Secretary of Fossil Energy, with a professional achievement award at the Black Engineer of the Year Awards conference this February. Photo Credit: Nancy Jo Brown/106FOTO Director Dot Harris presents Chris Smith, Principal Deputy Assistant Secretary and Acting Assistant Secretary of Fossil Energy, with a professional achievement award at the Black Engineer of the Year Awards conference this February. Photo Credit: Nancy Jo Brown/106FOTO Dot Harris Dot Harris

468

Fossil Energy Acting Assistant Secretary Recognized at Black Engineer of  

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

Fossil Energy Acting Assistant Secretary Recognized at Black Fossil Energy Acting Assistant Secretary Recognized at Black Engineer of the Year Awards Fossil Energy Acting Assistant Secretary Recognized at Black Engineer of the Year Awards February 19, 2013 - 8:54am Addthis Director Dot Harris presents Chris Smith, Principal Deputy Assistant Secretary and Acting Assistant Secretary of Fossil Energy, with a professional achievement award at the Black Engineer of the Year Awards conference this February. Photo Credit: Nancy Jo Brown/106FOTO Director Dot Harris presents Chris Smith, Principal Deputy Assistant Secretary and Acting Assistant Secretary of Fossil Energy, with a professional achievement award at the Black Engineer of the Year Awards conference this February. Photo Credit: Nancy Jo Brown/106FOTO Dot Harris Dot Harris

469

Strengthening Our Partnerships with Historically Black Colleges and  

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

Partnerships with Historically Black Colleges and Partnerships with Historically Black Colleges and Universities Strengthening Our Partnerships with Historically Black Colleges and Universities January 13, 2011 - 6:06pm Addthis Strengthening Our Partnerships with Historically Black Colleges and Universities Secretary Chu Secretary Chu Former Secretary of Energy Last February, President Obama renewed the White House Initiative on Historically Black Colleges and Universities to encourage collaboration between government agencies, educational associations, philanthropic organizations, the private sector and others to increase the capacity of HBCUs to provide high-quality education to a greater number of students. The Department of Energy is committed to supporting education at HBCUs and has partnered with HBCUs on a variety of projects. As part of that

470

Black Carbons Properties and Role in the Environment: A Comprehensive Review  

E-Print Network (OSTI)

NOAA/ESRL. Mauna Loa Carbon Dioxide Annual Mean Data.H. Can reducing black carbon emissions counteract globalanalysis of black carbon in soils. Global Biogeochem. Cycle.

Shrestha, Gyami

2010-01-01T23:59:59.000Z

471

Pages that link to "Black Dog, South Dakota" | Open Energy Information  

Open Energy Info (EERE)

History Share this page on Facebook icon Twitter icon Pages that link to "Black Dog, South Dakota" Black Dog, South Dakota Jump to: navigation, search What links here...

472

Black Seminole involvement and leadership during the Second Seminole War, 1835 1842.  

E-Print Network (OSTI)

?? This thesis examines the involvement, leadership, and impact of the Black Seminoles during the Second Seminole War. In Florida, free Blacks, runaway slaves, and (more)

Dixon, Anthony E.

2007-01-01T23:59:59.000Z

473

Hunter College Black Male Initiative-"Brothers for Excellence"-Summer Pipeline Programs Hunter College Black Male Initiative  

E-Print Network (OSTI)

Hunter College Black Male Initiative-"Brothers for Excellence"- Summer Pipeline Programs 1 Hunter College Black Male Initiative "Brothers for Excellence" Summer Pipeline Programs Table of Contents Page 11 Law Pipeline Programs 1 11 Graduate School, Earning a Ph.D., Conduct Research Pipeline Programs 24 16

Qiu, Weigang

474

HETEROGENEOUS SHALLOW-SHELF CARBONATE BUILDUPS IN THE PARADOX BASIN, UTAH AND COLORADO: TARGETS FOR INCREASED OIL PRODUCTION AND RESERVES USING HORIZONTAL DRILLING TECHNIQUES  

Science Conference Proceedings (OSTI)

The Paradox Basin of Utah, Colorado, Arizona, and New Mexico contains nearly 100 small oil fields producing from carbonate buildups within the Pennsylvanian (Desmoinesian) Paradox Formation. These fields typically have one to 10 wells with primary production ranging from 700,000 to 2,000,000 barrels (111,300-318,000 m{sup 3}) of oil per field and a 15 to 20 percent recovery rate. At least 200 million barrels (31.8 million m{sup 3}) of oil will not be recovered from these small fields because of inefficient recovery practices and undrained heterogeneous reservoirs. Several fields in southeastern Utah and southwestern Colorado are being evaluated as candidates for horizontal drilling and enhanced oil recovery from existing vertical wells based upon geological characterization and reservoir modeling case studies. Geological characterization on a local scale is focused on reservoir heterogeneity, quality, and lateral continuity, as well as possible reservoir compartmentalization, within these fields. This study utilizes representative cores, geophysical logs, and thin sections to characterize and grade each field's potential for drilling horizontal laterals from existing development wells. The results of these studies can be applied to similar fields elsewhere in the Paradox Basin and the Rocky Mountain region, the Michigan and Illinois Basins, and the Midcontinent region. This report covers research activities for the second half of the third project year (October 6, 2002, through April 5, 2003). The primary work included describing and mapping regional facies of the upper Ismay and lower Desert Creek zones of the Paradox Formation in the Blanding sub-basin, Utah. Regional cross sections show the development of ''clean carbonate'' packages that contain all of the productive reservoir facies. These clean carbonates abruptly change laterally into thick anhydrite packages that filled several small intra-shelf basins in the upper Ismay zone. Examination of upper Ismay cores identified seven depositional facies: open marine, middle shelf, inner shelf/tidal flat, bryozoan mounds, phylloid-algal mounds, quartz sand dunes, and anhydritic salinas. Lower Desert Creek facies include open marine, middle shelf, protomounds/collapse breccia, and phylloid-algal mounds. Mapping the upper Ismay zone facies delineates very prospective reservoir trends that contain porous, productive buildups around the anhydrite-filled intra-shelf basins. Facies and reservoir controls imposed by the anhydritic intra-shelf basins should be considered when selecting the optimal location and orientation of any horizontal drilling from known phylloidalgal reservoirs to undrained reserves, as well as identifying new exploration trends. Although intra-shelf basins are not present in the lower Desert Creek zone of the Blanding sub-basin, drilling horizontally along linear shoreline trends could also encounter previously undrilled, porous intervals and buildups. Technology transfer activities consisted of a technical presentation at a Class II Review conference sponsored by the National Energy Technology Laboratory at the Center for Energy and Economic Diversification in Odessa, Texas. The project home page was updated on the Utah Geological Survey Internet web site.

David E. Eby; Thomas C. Chidsey, Jr.; Kevin McClure; Craig D. Morgan

2003-07-01T23:59:59.000Z

475

Heterogeneous Shallow-Shelf Carbonate Buildups in the Paradox Basin, Utah and Colorado: Targets for Increased Oil Production and Reserves Using Horizontal Drilling Techniques  

Science Conference Proceedings (OSTI)

The Paradox Basin of Utah, Colorado, Arizona, and New Mexico contains nearly 100 small oil fields producing from carbonate buildups within the Pennsylvanian (Desmoinesian) Paradox Formation. These fields typically have one to 10 wells with primary production ranging from 700,000 to 2,000,000 barrels (111,300-318,000 m{sup 3}) of oil per field and a 15 to 20 percent recovery rate. At least 200 million barrels (31.8 million m{sup 3}) of oil will not be recovered from these small fields because of inefficient recovery practices and undrained heterogeneous reservoirs. Several fields in southeastern Utah and southwestern Colorado are being evaluated as candidates for horizontal drilling and enhanced oil recovery from existing vertical wells based upon geological characterization and reservoir modeling case studies. Geological characterization on a local scale is focused on reservoir heterogeneity, quality, and lateral continuity, as well as possible reservoir compartmentalization, within these fields. This study utilizes representative cores, geophysical logs, and thin sections to characterize and grade each field's potential for drilling horizontal laterals from existing development wells. The results of these studies can be applied to similar fields elsewhere in the Paradox Basin and the Rocky Mountain region, the Michigan and Illinois Basins, and the Midcontinent region. This report covers research activities for the first half of the fourth project year (April 6 through October 5, 2003). The work included (1) analysis of well-test data and oil production from Cherokee and Bug fields, San Juan County, Utah, and (2) diagenetic evaluation of stable isotopes from the upper Ismay and lower Desert Creek zones of the Paradox Formation in the Blanding sub-basin, Utah. Production ''sweet spots'' and potential horizontal drilling candidates were identified for Cherokee and Bug fields. In Cherokee field, the most productive wells are located in the thickest part of the mound facies of the upper Ismay zone, where microporosity is well developed. In Bug field, the most productive wells are located structurally downdip from the updip porosity pinch out in the dolomitized lower Desert Creek zone, where micro-box-work porosity is well developed. Microporosity and micro-box-work porosity have the greatest hydrocarbon storage and flow capacity, and potential horizontal drilling target in these fields. Diagenesis is the main control on the quality of Ismay and Desert Creek reservoirs. Most of the carbonates present within the lower Desert Creek and Ismay have retained a marine-influenced carbon isotope geochemistry throughout marine cementation as well as through post-burial recycling of marine carbonate components during dolomitization, stylolitization, dissolution, and late cementation. Meteoric waters do not appear to have had any effect on the composition of the dolomites in these zones. Light oxygen values obtained from reservoir samples for wells located along the margins or flanks of Bug field may be indicative of exposure to higher temperatures, to fluids depleted in {sup 18}O relative to sea water, or to hypersaline waters during burial diagenesis. The samples from Bug field with the lightest oxygen isotope compositions are from wells that have produced significantly greater amounts of hydrocarbons. There is no significant difference between the oxygen isotope compositions from lower Desert Creek dolomite samples in Bug field and the upper Ismay limestones and dolomites from Cherokee field. Carbon isotopic compositions for samples from Patterson Canyon field can be divided into two populations: isotopically heavier mound cement and isotopically lighter oolite and banded cement. Technology transfer activities consisted of exhibiting a booth display of project materials at the annual national convention of the American Association of Petroleum Geologists, a technical presentation, a core workshop, and publications. The project home page was updated on the Utah Geological Survey Internet web site.

Thomas C. Chidsey; Kevin McClure; Craig D. Morgan

2003-10-05T23:59:59.000Z

476

MULTICOMPONENT SEISMIC ANALYSIS AND CALIBRATION TO IMPROVE RECOVERY FROM ALGAL MOUNDS: APPLICATION TO THE ROADRUNNER/TOWAOC AREA OF THE PARADOX BASIN, UTE MOUNTAIN UTE RESERVATION, COLORADO  

Science Conference Proceedings (OSTI)

This report describes the results made in fulfillment of contract DE-FG26-02NT15451, ''Multicomponent Seismic Analysis and Calibration to Improve Recovery from Algal Mounds: Application to the Roadrunner/Towaoc Area of the Paradox Basin, Ute Mountain Ute Reservation, Colorado'', for the Second Biennial Report covering the time period May 1, 2003 through October 31, 2003. During this period, the project achieved two significant objectives: completion of the acquisition and processing design and specifications 3D9C seismic acquisition and the 3D VSP log; and completion of the permitting process involving State, Tribal and Federal authorities. Successful completion of these two major milestones pave the way for field acquisition as soon as weather permits in the Spring of 2004. This report primarily describes the design and specifications for the VSP and 3D9C surveys.

Paul La Pointe; Claudia Rebne; Steve Dobbs

2004-03-01T23:59:59.000Z

477

Black Coral Capital | Open Energy Information  

Open Energy Info (EERE)

Coral Capital Coral Capital Jump to: navigation, search Name Black Coral Capital Address 55 Union Street, 3rd Floor Place Boston, Massachusetts Zip 02108 Region Greater Boston Area Product Cleantech private equity Number of employees 1-10 Website [www.blackcoralcapital.com www.blackcoralcapital.com ] Coordinates 42.3615754°, -71.0572318° 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":42.3615754,"lon":-71.0572318,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

478

Black Emerald Group | Open Energy Information  

Open Energy Info (EERE)

Group Group Jump to: navigation, search Name Black Emerald Group Address 4 Park Place Place London, United Kingdom Zip SW1A 1LP Product Investment banking firm specializing in renewable energy and environmental technology corporate and project finance Year founded 1994 Website http://www.blackemerald.com/ Coordinates 51.5063321°, -0.1401519° 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":51.5063321,"lon":-0.1401519,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

479

Black River Electric Coop | Open Energy Information  

Open Energy Info (EERE)

Coop Coop Jump to: navigation, search Name Black River Electric Coop Place Missouri Utility Id 1775 Utility Location Yes Ownership C NERC Location SERC NERC SERC Yes Activity Distribution Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png Outdoor Lighting MV 175 W Lighting Outdoor Lighting MV 250 W Lighting Outdoor Lighting MV 400 W Lighting Outdoor Lighting SLV 400 W Direct Lighting Outdoor Lighting SLV 400 W Flood Lighting Outdoor Lighting SVL 100 W Lighting Residential Residential Single Phase General Service Commercial Standard Single-Phase Commercial/Industrial Service Industrial

480

Perturbations of black p-branes  

SciTech Connect

We consider black p-brane solutions of the low-energy string action, computing scalar perturbations. Using standard methods, we derive the wave equations obeyed by the perturbations and treat them analytically and numerically. We have found that tensorial perturbations obtained via a gauge-invariant formalism leads to the same results as scalar perturbations. No instability has been found. Asymptotically, these solutions typically reduce to a AdS{sub (p+2)}xS{sup (8-p)} space which, in the framework of Maldacena's conjecture, can be regarded as a gravitational dual to a conformal field theory defined in a (p+1)-dimensional flat space-time. The results presented open the possibility of a better understanding the AdS/CFT correspondence, as originally formulated in terms of the relation among brane structures and gauge theories.

Abdalla, Elcio; Fernandez Piedra, Owen Pavel; Oliveira, Jeferson de; Molina, C. [Instituto de Fisica, Universidade de Sao Paulo, CP 66318, 05315-970, Sao Paulo-SP (Brazil); Departamento de Fisica y Quimica, Facultad de Mecanica, Universidad de Cienfuegos, Carretera a Rodas, km 4, Cuatro Caminos, Cienfuegos (Cuba); Instituto de Fisica, Universidade de Sao Paulo, CP 66318, 05315-970, Sao Paulo-SP (Brazil); Escola de Artes, Ciencias e Humanidades, Universidade de Sao Paulo Av. Arlindo Bettio 1000, CEP 03828-000, Sao Paulo-SP (Brazil)

2010-03-15T23:59:59.000Z

Note: This page contains sample records for the topic "black warrior paradox" from the National Library of EnergyBeta (NLEBeta).
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481

Modeling the Black Hole Excision Problem  

E-Print Network (OSTI)

We analyze the excision strategy for simulating black holes. The problem is modeled by the propagation of quasi-linear waves in a 1-dimensional spatial region with timelike outer boundary, spacelike inner boundary and a horizon in between. Proofs of well-posed evolution and boundary algorithms for a second differential order treatment of the system are given for the separate pieces underlying the finite difference problem. These are implemented in a numerical code which gives accurate long term simulations of the quasi-linear excision problem. Excitation of long wavelength exponential modes, which are latent in the problem, are suppressed using conservation laws for the discretized system. The techniques are designed to apply directly to recent codes for the Einstein equations based upon the harmonic formulation.

B. Szilagyi; H-O. Kreiss; J. Winicour

2004-12-21T23:59:59.000Z

482

Cooper pairing near charged black holes  

E-Print Network (OSTI)

We show that a quartic contact interaction between charged fermions can lead to Cooper pairing and a superconducting instability in the background of a charged asymptotically Anti-de Sitter black hole. For a massless fermion we obtain the zero mode analytically and compute the dependence of the critical temperature T_c on the charge of the fermion. The instability we find occurs at charges above a critical value, where the fermion dispersion relation near the Fermi surface is linear. The critical temperature goes to zero as the marginal Fermi liquid is approached, together with the density of states at the Fermi surface. Besides the charge, the critical temperature is controlled by a four point function of a fermionic operator in the dual strongly coupled field theory.

Hartman, Thomas

2010-01-01T23:59:59.000Z

483

Cooper pairing near charged black holes  

E-Print Network (OSTI)

We show that a quartic contact interaction between charged fermions can lead to Cooper pairing and a superconducting instability in the background of a charged asymptotically Anti-de Sitter black hole. For a massless fermion we obtain the zero mode analytically and compute the dependence of the critical temperature T_c on the charge of the fermion. The instability we find occurs at charges above a critical value, where the fermion dispersion relation near the Fermi surface is linear. The critical temperature goes to zero as the marginal Fermi liquid is approached, together with the density of states at the Fermi surface. Besides the charge, the critical temperature is controlled by a four point function of a fermionic operator in the dual strongly coupled field theory.

Thomas Hartman; Sean A. Hartnoll

2010-03-09T23:59:59.000Z

484

Spin orientation of supermassive black holes in active galaxies  

E-Print Network (OSTI)

Accretion of gas onto a central supermassive black hole is generally accepted to be the source of the emitted energy in active galactic nuclei.The broad emission lines we observe in their optical spectra are probably formed in the wind of an accretion disk at distances of light days to light years from the central black hole. The variable fraction of the emission lines originates at typical distances of only 1 to 50 light days from the central supermassive black hole. We derived a central black hole mass of M_orbital = 1.8 +/-0.4 x 10^7 M_sun in the Seyfert galaxy Mrk110 assuming the broad emission lines are generated in gas clouds orbiting within an accretion disk. This figure depends on the inclination angle of the accretion disk. Here we report on the detection of gravitational redshifted emission in the variable fraction of the broad emission lines. We derive a central black hole mass of M_grav = 14.0 +/-3.0 x 10^7 M_sun. These measurements are independent on the orientation of the accretion disk. The comparison of both black hole mass estimates allows to determine the projection of the central accretion disk angle i to 21 +/-5 deg. in Mrk110 and therefore the orientation of the spin axis of the central black hole.

W. Kollatschny

2003-11-12T23:59:59.000Z

485

Higgs Boson Production from Black Holes at the LHC  

E-Print Network (OSTI)

If the fundamental Planck scale is near a TeV, then TeV scale black holes should be produced in proton-proton collisions at the LHC where \\sqrt{s} = 14 TeV. As the temperature of the black holes can be ~ 1 TeV we also expect production of Higgs bosons from them via Hawking radiation. This is a different production mode for the Higgs boson, which would normally be produced via direct pQCD parton fusion processes. In this paper we compare total cross sections and transverse momentum distributions d\\sigma/dp_T for Higgs production from black holes at the LHC with those from direct parton fusion processes at next-to-next-to-leading order and next-to-leading order respectively. We find that the Higgs production from black holes can be larger or smaller than the direct pQCD production depending upon the Planck mass and black hole mass. We also find that d\\sigma/dp_T of Higgs production from black holes increases as a function of p_T which is in sharp contrast with the pQCD predictions where d\\sigma/dp_T decreases so we suggest that the measurement of an increase in d\\sigma/dp_T as p_T increases for Higgs (or any other heavy particle) production can be a useful signature for black holes at the LHC.

Gouranga C. Nayak; J. Smith

2006-02-14T23:59:59.000Z

486

Black Holes and the Third Law of Thermodynamics  

E-Print Network (OSTI)

We discuss in the framework of black hole thermodynamics some aspects relative to the third law in the case of black holes of the Kerr-Newman family. In the light of the standard proof of the equivalence between the unattainability of the zero temperature and the entropic version of the third law it is remarked that the unattainability has a special character in black hole thermodynamics. Also the zero temperature limit which obtained in the case of very massive black holes is discussed and it is shown that a violation of the entropic version in the charged case occurs. The violation of the Bekenstein-Hawking law in favour of zero entropy SE = 0 in the case of extremal black holes is suggested as a natural solution for a possible violation of the second law of thermodynamics. Thermostatic arguments in support of the unattainability are explored, and SE = 0 for extremal black holes is shown to be again a viable solution. The third law of black hole dynamics by W.Israel is then interpreted as a further strong corroboration to the picture of a discontinuity between extremal states and non-extremal ones. PACS: 04.70.Dy, 05.70.-a 1.

F. Belgiorno; M. Martellini

2005-01-01T23:59:59.000Z

487

Microsoft Word - FT2b 092408 97-03  

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

Black Warrior Basin Coal Seam Project Black Warrior Basin Coal Seam Project Field Test Location Tuscaloosa County, Alabama Summary of Field Test Site and Operations The Southeast Regional Carbon Sequestration Partnership's (SECARB) Black Warrior Basin Coal Seam Project injection testing will be performed to provide an initial assessment of the capability of mature coalbed methane reservoirs to receive and adsorb significant volumes of carbon dioxide (CO 2 ) for geologic carbon sequestration and enhanced coalbed methane recovery. A coalbed methane well in Deerlick Creek Coal Degasification Field (Figure 1) will be used for injection testing, and three deep monitoring wells will be drilled and cored. Coal seams in the Black Creek, Mary Lee, and Pratt coal zones of the Pennsylvanian-age Pottsville

488

Microsoft Word - NatlConfBlackMayors.doc  

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

National Conference of Black Mayors, Inc. National Conference of Black Mayors, Inc. Initiative: Partnered in developing the 1997 Environmental Justice conference, "The State of Environmental Justice in America" Cooperative Agreement, created in 1999 * Goal * Technical Assistance * Communities Served * Community Impact Goal: The cooperative agreement enhances the National Conference of Black Mayors, Inc. (NCBM) members' capacity for energy and environmental planning through computer-based technology, Internet access and a training workshop. Technical Assistance: The NCBM will establish a formal relationship with DOE's Dr. Samuel P. Massie Chairs of Excellence Program participants. The Massie Chairs of Excellence Program partnership will provide the NCBM's members with technical assistance in the environmental

489

Black Hills Energy (Gas) - Residential Energy Efficiency Rebate Programs |  

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

Black Hills Energy (Gas) - Residential Energy Efficiency Rebate Black Hills Energy (Gas) - Residential Energy Efficiency Rebate Programs Black Hills Energy (Gas) - Residential Energy Efficiency Rebate Programs < Back Eligibility Residential Savings Category Heating & Cooling Commercial Heating & Cooling Heating Home Weatherization Commercial Weatherization Sealing Your Home Appliances & Electronics Design & Remodeling Windows, Doors, & Skylights Water Heating Maximum Rebate Insulation: $750 Weather-Stripping and Caulking: $200 Program Info State Iowa Program Type Utility Rebate Program Rebate Amount Energy Evaluation: Free Clothes Washers: $100 Dishwashers: $20 Replacement Furnaces: $250 - $400 Replacement Boilers: $150 or $400 Duct Repair/Sealing: $200 Duct Insulation (R-8): $150 Insulation/Weather-Stripping/Caulking: 70% of project cost

490

Stability of branes trapped by d-dimensional black holes  

SciTech Connect

The system of extended objects interacting with a black hole describes or mimics various gravitational phenomena. In this brief paper, we report the results of stability analysis of codimension-one Dirac-Nambu-Goto branes at rest at the equatorial plane of d-dimensional spherical black holes, including the Schwarzschild and Schwarzschild-(anti-)de Sitter black holes. For the Schwarzschild and Schwarzschild-anti-de Sitter backgrounds the stability of branes is shown analytically by means of a deformation technique. In contrast, for the Schwarzschild-de Sitter background we demonstrate with the help of numerics that the brane is unstable (only) against the s-wave sector of perturbations.

Hioki, Kenta [Department of Physics, Waseda University, Okubo 3-4-1, Tokyo 169-8555 (Japan); Waseda Research Institute for Science and Engineering, Okubo 3-4-1, Tokyo 169-8555 (Japan); Miyamoto, Umpei [Racah Institute of Physics, Hebrew University, Givat Ram, Jerusalem 91904 (Israel); Nozawa, Masato [Department of Physics, Waseda University, Okubo 3-4-1, Tokyo 169-8555 (Japan)

2009-10-15T23:59:59.000Z

491

Classical black hole evaporation in Randall-Sundrum infinite braneworld  

E-Print Network (OSTI)

After the gravity induced on the brane in the Randall-Sundrum (RS) infinite braneworld is briefly reviewed, we discuss the possibility that black holes evaporate as a result of classical evolution in this model based on the AdS/CFT correspondence. If this possibility is really the case, the existence of long-lived solar mass black holes will give the strongest constraint on the bulk curvature radius. At the same time, we can propose a new method to simulate the evaporation of a 4D black hole due to the Hawking radiation as a 5D process.

Takahiro Tanaka

2002-03-24T23:59:59.000Z

492

Safeguards Approaches for Black Box Processes or Facilities  

Science Conference Proceedings (OSTI)

The objective of this study is to determine whether a safeguards approach can be developed for black box processes or facilities. These are facilities where a State or operator may limit IAEA access to specific processes or portions of a facility; in other cases, the IAEA may be prohibited access to the entire facility. The determination of whether a black box process or facility is safeguardable is dependent upon the details of the process type, design, and layout; the specific limitations on inspector access; and the restrictions placed upon the design information that can be provided to the IAEA. This analysis identified the necessary conditions for safeguardability of black box processes and facilities.

Diaz-Marcano, Helly; Gitau, Ernest TN; Hockert, John; Miller, Erin; Wylie, Joann

2013-09-25T23:59:59.000Z

493

Cold Black Holes in the Einstein-Scalar Field System  

E-Print Network (OSTI)

We study Einstein gravity coupled to a massless scalar field in a static spherically symmetric space-time in four dimensions. Black hole solutions exist when the kinetic energy of the scalar field is negative, that is, for a phantom field. These scalar black holes have an infinite horizon area and zero temperature. They are related through a conformal transformation with similar objects in the Jordan frames of scalar-tensor theories of gravity. The thermodynamical properties of these solutions are discussed. It is proved that any static, spherically symmetric black holes with an infinite horizon area have zero Hawking temperature.

K. A. Bronnikov; J. C. Fabris; N. Pinto-neto; M. E. Rodrigues; Icra-cbpf Rua Xavier Sigaud

2008-01-01T23:59:59.000Z

494

Paramont's Black Bear No. 4 mine does it right, again  

Science Conference Proceedings (OSTI)

The Paramont Coal Company Virginia, LLC, a subsidiary of Alpha Natural Resources, recently won the '2007 overall award for excellence in mining and reclamation from the Virginia Division of Mined Land Reclamation and the Virginia Mining Association. Coal People Magazine recently visited Black Bear No. 4 mine where a settling pond was being removed and stream bed placed to drain the area, part of the 451-acre award winning reclamation project. The article recounts discussions with mining engineers about the company's operations with emphasis on the Black Bear No. 4 mine. Black Bear No. 1 mine won five state and national awards last year for conservation and land management practices. 8 photos.

Sanda, A.

2007-07-15T23:59:59.000Z

495

Interacting black holes on the brane: the seeding of binaries  

E-Print Network (OSTI)

We consider the evolution of sub-horizon-sized black holes which are formed during the high energy phase of the braneworld scenario. These black holes are long-lived due to modified evaporation and accretion of radiation during the radiation dominated era. We argue that an initial mass difference between any two neighbouring black holes is always amplified because of their exchange of energy with the surrounding radiation. We present a scheme of binary formation based on mass differences suggesting that such a scenario could lead to binaries with observable signatures.

A. S. Majumdar; A. Mehta; J. M. Luck

2003-11-06T23:59:59.000Z

496

Black and White Sociology: Segregation of the Discipline  

E-Print Network (OSTI)

The idea that theories of race, racial segregation and racism have played a central role in the development of sociology and that black and white sociologies have formed because of this condition is not new and has been in circulation among sociologists for some time. While a number of sociologists have examined how race has shaped the discipline, only a few have attempted to examine and define black sociology and white sociology. Despite the initial efforts of some, the two sociologies remain vague, undeveloped concepts, and thus open to skepticism and denunciation. No systematic historical-intellectual investigation of black sociology or white sociology exists and, subsequently, no in-depth comparative analysis of the two exists. Therefore, through a comparative-historical analysis and exercise in the sociology of knowledge, this work seeks to provide a more precise history and theory of black sociology and white sociology. This study argues that black sociology and white sociology represent two distinct intellectual perspectives---sets of ideas---and social practices shaped by past perspectives and practices and social-historical contexts, which are largely racially- defined. More specifically, I will demonstrate that black sociology and white sociology develop out of two approaches of thought and action primarily influenced by race, a black tradition of ideas and practices and a white tradition of thought and practices. To map these two traditions, I begin with a review and analysis of works that have discussed (directly or indirectly) black and white sociology and black and white sociologists. Next, I turn to a more focused analysis on the sociological perspectives and practices of W.E.B. Du Bois and Robert Park, examining the ideas and practices that shape each sociologist's thought and actions. I identify ways that Park incorporates and advances earlier ideas and practices of whites, and, conversely, how Du Bois incorporates and advances earlier perspectives and practices of blacks. Lastly, I point out how Du Bois' ideas and methods, shaped by an earlier black tradition, now informs what is described as black sociology, and how Park's ideas and methods, shaped by an earlier white tradition, now informs what is described as white sociology.

Elias, Sean

2009-08-01T23:59:59.000Z

497

Thermodynamics of an Evaporating Schwarzschild Black Hole in Noncommutative Space  

E-Print Network (OSTI)

We investigate the effects of space noncommutativity and the generalized uncertainty principle on the thermodynamics of a radiating Schwarzschild black hole. We show that evaporation process is in such a way that black hole reaches to a maximum temperature before its final stage of evolution and then cools down to a nonsingular remnant with zero temperature and entropy. We compare our results with more reliable results of string theory. This comparison Shows that GUP and space noncommutativity are similar concepts at least from view point of black hole thermodynamics.

Kourosh Nozari; Behnaz Fazlpour

2006-05-11T23:59:59.000Z

498

Black Hills Power, Inc. Smart Grid Project | Open Energy Information  

Open Energy Info (EERE)

Black Hills Power, Inc. Smart Grid Project Black Hills Power, Inc. Smart Grid Project Jump to: navigation, search Project Lead Black Hills Power, Inc. Country United States Headquarters Location Rapid City, South Dakota Additional Benefit Places North Dakota, Minnesota Recovery Act Funding $9.576,628 Total Project Value $19,153,256 Coverage Area Coverage Map: Black Hills Power, Inc. Smart Grid Project Coordinates 44.0805434°, -103.2310149° 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":[]}

499

Students, Faculty from Historically Black Colleges and Universities Share  

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

Students, Faculty from Historically Black Colleges and Universities Students, Faculty from Historically Black Colleges and Universities Share Research with EM Laboratory in Successful Exchange Students, Faculty from Historically Black Colleges and Universities Share Research with EM Laboratory in Successful Exchange February 5, 2013 - 12:00pm Addthis South Carolina State University students William Dumpson, left, and Alejandra Chirino, center, talk with Savannah River National Laboratory Director Dr. Terry Michalske at a recent research exchange involving the laboratory and seven historically black colleges and universities. South Carolina State University students William Dumpson, left, and Alejandra Chirino, center, talk with Savannah River National Laboratory Director Dr. Terry Michalske at a recent research exchange involving the

500

Celebrating Black History Month w/ DOE's Travis Dredd | Department of  

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

Celebrating Black History Month w/ DOE's Travis Dredd Celebrating Black History Month w/ DOE's Travis Dredd Celebrating Black History Month w/ DOE's Travis Dredd February 2, 2011 - 2:49pm Addthis Travis Dredd Travis Dredd Ebony Meeks Former Assistant Press Secretary, Office of Public Affairs "As I get caught-up in my day-to-day activities, I try to remember something he once said "Do your little bit of good where you are; it's those little bits of good put together, that overwhelm the world." Travis Dredd This month, we celebrate Black History Month. Throughout February, we will introduce you to African Americans who are working to advance the President's clean energy agenda and help the Department of Energy achieve its mission. Our first profile is of Travis Dredd, Special Assistant to Secretary Chu.